# stackcollapse.py - format perf samples with one line per distinct call stack # # This script's output has two space-separated fields. The first is a semicolon # separated stack including the program name (from the "comm" field) and the # function names from the call stack. The second is a count: # # swapper;start_kernel;rest_init;cpu_idle;default_idle;native_safe_halt 2 # # The file is sorted according to the first field. # # Input may be created and processed using: # # perf record -a -g -F 99 sleep 60 # perf script report stackcollapse > out.stacks-folded # # (perf script record stackcollapse works too). # # Written by Paolo Bonzini # Based on Brendan Gregg's stackcollapse-perf.pl script. import os import sys from collections import defaultdict from optparse import OptionParser, make_option sys.path.append(os.environ['PERF_EXEC_PATH'] + \ '/scripts/python/Perf-Trace-Util/lib/Perf/Trace') from perf_trace_context import * from Core import * from EventClass import * # command line parsing option_list = [ # formatting options for the bottom entry of the stack make_option("--include-tid", dest="include_tid", action="store_true", default=False, help="include thread id in stack"), make_option("--include-pid", dest="include_pid", action="store_true", default=False, help="include process id in stack"), make_option("--no-comm", dest="include_comm", action="store_false", default=True, help="do not separate stacks according to comm"), make_option("--tidy-java", dest="tidy_java", action="store_true", default=False, help="beautify Java signatures"), make_option("--kernel", dest="annotate_kernel", action="store_true", default=False, help="annotate kernel functions with _[k]") ] parser = OptionParser(option_list=option_list) (opts, args) = parser.parse_args() if len(args) != 0: parser.error("unexpected command line argument") if opts.include_tid and not opts.include_comm: parser.error("requesting tid but not comm is invalid") if opts.include_pid and not opts.include_comm: parser.error("requesting pid but not comm is invalid") # event handlers lines = defaultdict(lambda: 0) def process_event(param_dict): def tidy_function_name(sym, dso): if sym is None: sym = '[unknown]' sym = sym.replace(';', ':') if opts.tidy_java: # the original stackcollapse-perf.pl script gives the # example of converting this: # Lorg/mozilla/javascript/MemberBox;.(Ljava/lang/reflect/Method;)V # to this: # org/mozilla/javascript/MemberBox:.init sym = sym.replace('<', '') sym = sym.replace('>', '') if sym[0] == 'L' and sym.find('/'): sym = sym[1:] try: sym = sym[:sym.index('(')] except ValueError: pass if opts.annotate_kernel and dso == '[kernel.kallsyms]': return sym + '_[k]' else: return sym stack = list() if 'callchain' in param_dict: for entry in param_dict['callchain']: entry.setdefault('sym', dict()) entry['sym'].setdefault('name', None) entry.setdefault('dso', None) stack.append(tidy_function_name(entry['sym']['name'], entry['dso'])) else: param_dict.setdefault('symbol', None) param_dict.setdefault('dso', None) stack.append(tidy_function_name(param_dict['symbol'], param_dict['dso'])) if opts.include_comm: comm = param_dict["comm"].replace(' ', '_') sep = "-" if opts.include_pid: comm = comm + sep + str(param_dict['sample']['pid']) sep = "/" if opts.include_tid: comm = comm + sep + str(param_dict['sample']['tid']) stack.append(comm) stack_string = ';'.join(reversed(stack)) lines[stack_string] = lines[stack_string] + 1 def trace_end(): list = lines.keys() list.sort() for stack in list: print "%s %d" % (stack, lines[stack]) ue='switch'/> Russell King's ARM Linux kernel treeRussell King
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-rw-r--r--Documentation/.renames.txt1191
-rw-r--r--Documentation/ABI/README7
-rw-r--r--Documentation/ABI/obsolete/automount-tracefs-debugfs20
-rw-r--r--Documentation/ABI/obsolete/o2cb4
-rw-r--r--Documentation/ABI/obsolete/procfs-i8k10
-rw-r--r--Documentation/ABI/obsolete/sysfs-bus-iio12
-rw-r--r--Documentation/ABI/obsolete/sysfs-driver-samsung-laptop10
-rw-r--r--Documentation/ABI/obsolete/sysfs-gpio16
-rw-r--r--Documentation/ABI/obsolete/sysfs-kernel-kexec-kdump71
-rw-r--r--Documentation/ABI/obsolete/sysfs-platform-ideapad-laptop8
-rw-r--r--Documentation/ABI/obsolete/sysfs-selinux-user12
-rw-r--r--Documentation/ABI/removed/o2cb4
-rw-r--r--Documentation/ABI/removed/sysfs-class-cxl (renamed from Documentation/ABI/testing/sysfs-class-cxl)62
-rw-r--r--Documentation/ABI/removed/sysfs-class-rfkill2
-rw-r--r--Documentation/ABI/removed/sysfs-firmware-efi-vars12
-rw-r--r--Documentation/ABI/removed/sysfs-mce37
-rw-r--r--Documentation/ABI/removed/sysfs-selinux-checkreqprot (renamed from Documentation/ABI/obsolete/sysfs-selinux-checkreqprot)3
-rw-r--r--Documentation/ABI/removed/sysfs-selinux-disable (renamed from Documentation/ABI/obsolete/sysfs-selinux-disable)3
-rw-r--r--Documentation/ABI/stable/o2cb4
-rw-r--r--Documentation/ABI/stable/sysfs-acpi-pmprofile20
-rw-r--r--Documentation/ABI/stable/sysfs-block281
-rw-r--r--Documentation/ABI/stable/sysfs-bus-mhi27
-rw-r--r--Documentation/ABI/stable/sysfs-bus-nvmem30
-rw-r--r--Documentation/ABI/stable/sysfs-class-backlight14
-rw-r--r--Documentation/ABI/stable/sysfs-class-bluetooth9
-rw-r--r--Documentation/ABI/stable/sysfs-class-infiniband2
-rw-r--r--Documentation/ABI/stable/sysfs-class-rfkill12
-rw-r--r--Documentation/ABI/stable/sysfs-devices-node54
-rw-r--r--Documentation/ABI/stable/sysfs-devices-system-cpu6
-rw-r--r--Documentation/ABI/stable/sysfs-driver-dma-idxd110
-rw-r--r--Documentation/ABI/stable/sysfs-driver-firmware-zynqmp141
-rw-r--r--Documentation/ABI/stable/sysfs-driver-misc-cp50025
-rw-r--r--Documentation/ABI/stable/sysfs-driver-mlxreg-io382
-rw-r--r--Documentation/ABI/stable/sysfs-driver-qaic19
-rw-r--r--Documentation/ABI/stable/sysfs-driver-speakup9
-rw-r--r--Documentation/ABI/stable/sysfs-firmware-efi-vars79
-rw-r--r--Documentation/ABI/stable/sysfs-hypervisor-xen13
-rw-r--r--Documentation/ABI/stable/sysfs-kernel-time-aux-clocks5
-rw-r--r--Documentation/ABI/stable/sysfs-module2
-rw-r--r--Documentation/ABI/stable/sysfs-platform-wmi-bmof7
-rw-r--r--Documentation/ABI/stable/vdso8
-rw-r--r--Documentation/ABI/testing/configfs-tsm-report145
-rw-r--r--Documentation/ABI/testing/configfs-usb-gadget13
-rw-r--r--Documentation/ABI/testing/configfs-usb-gadget-acm7
-rw-r--r--Documentation/ABI/testing/configfs-usb-gadget-ffs12
-rw-r--r--Documentation/ABI/testing/configfs-usb-gadget-mass-storage10
-rw-r--r--Documentation/ABI/testing/configfs-usb-gadget-midi254
-rw-r--r--Documentation/ABI/testing/configfs-usb-gadget-uac113
-rw-r--r--Documentation/ABI/testing/configfs-usb-gadget-uac220
-rw-r--r--Documentation/ABI/testing/configfs-usb-gadget-uvc130
-rw-r--r--Documentation/ABI/testing/debugfs-alienware-wmi64
-rw-r--r--Documentation/ABI/testing/debugfs-amd-iommu131
-rw-r--r--Documentation/ABI/testing/debugfs-cec-error-inj2
-rw-r--r--Documentation/ABI/testing/debugfs-cros-ec22
-rw-r--r--Documentation/ABI/testing/debugfs-cxl157
-rw-r--r--Documentation/ABI/testing/debugfs-dell-wmi-ddv34
-rw-r--r--Documentation/ABI/testing/debugfs-driver-dcc127
-rw-r--r--Documentation/ABI/testing/debugfs-driver-habanalabs181
-rw-r--r--Documentation/ABI/testing/debugfs-driver-qat109
-rw-r--r--Documentation/ABI/testing/debugfs-driver-qat_telemetry259
-rw-r--r--Documentation/ABI/testing/debugfs-dwc-pcie157
-rw-r--r--Documentation/ABI/testing/debugfs-hisi-hpre223
-rw-r--r--Documentation/ABI/testing/debugfs-hisi-migration25
-rw-r--r--Documentation/ABI/testing/debugfs-hisi-sec191
-rw-r--r--Documentation/ABI/testing/debugfs-hisi-zip191
-rw-r--r--Documentation/ABI/testing/debugfs-iio-ad946739
-rw-r--r--Documentation/ABI/testing/debugfs-iio-backend20
-rw-r--r--Documentation/ABI/testing/debugfs-intel-iommu276
-rw-r--r--Documentation/ABI/testing/debugfs-msi-wmi-platform14
-rw-r--r--Documentation/ABI/testing/debugfs-pcie-ptm70
-rw-r--r--Documentation/ABI/testing/debugfs-pktcdvd18
-rw-r--r--Documentation/ABI/testing/debugfs-scmi70
-rw-r--r--Documentation/ABI/testing/debugfs-scmi-raw208
-rw-r--r--Documentation/ABI/testing/debugfs-tpmi40
-rw-r--r--Documentation/ABI/testing/debugfs-turris-mox-rwtm14
-rw-r--r--Documentation/ABI/testing/debugfs-vfio31
-rw-r--r--Documentation/ABI/testing/gpio-cdev9
-rw-r--r--Documentation/ABI/testing/ima_policy56
-rw-r--r--Documentation/ABI/testing/procfs-diskstats2
-rw-r--r--Documentation/ABI/testing/procfs-smaps_rollup1
-rw-r--r--Documentation/ABI/testing/securityfs-secrets-coco51
-rw-r--r--Documentation/ABI/testing/sysfs-amd-pmc13
-rw-r--r--Documentation/ABI/testing/sysfs-amd-pmf13
-rw-r--r--Documentation/ABI/testing/sysfs-ata11
-rw-r--r--Documentation/ABI/testing/sysfs-auxdisplay-linedisp90
-rw-r--r--Documentation/ABI/testing/sysfs-block-bcache7
-rw-r--r--Documentation/ABI/testing/sysfs-block-device22
-rw-r--r--Documentation/ABI/testing/sysfs-block-zram29
-rw-r--r--Documentation/ABI/testing/sysfs-bus-acpi18
-rw-r--r--Documentation/ABI/testing/sysfs-bus-auxiliary9
-rw-r--r--Documentation/ABI/testing/sysfs-bus-bcma2
-rw-r--r--Documentation/ABI/testing/sysfs-bus-cdx121
-rw-r--r--Documentation/ABI/testing/sysfs-bus-coreboot45
-rw-r--r--Documentation/ABI/testing/sysfs-bus-coresight-devices-cti84
-rw-r--r--Documentation/ABI/testing/sysfs-bus-coresight-devices-dummy-source21
-rw-r--r--Documentation/ABI/testing/sysfs-bus-coresight-devices-etb106
-rw-r--r--Documentation/ABI/testing/sysfs-bus-coresight-devices-etm3x18
-rw-r--r--Documentation/ABI/testing/sysfs-bus-coresight-devices-etm4x16
-rw-r--r--Documentation/ABI/testing/sysfs-bus-coresight-devices-funnel6
-rw-r--r--Documentation/ABI/testing/sysfs-bus-coresight-devices-stm6
-rw-r--r--Documentation/ABI/testing/sysfs-bus-coresight-devices-tmc22
-rw-r--r--Documentation/ABI/testing/sysfs-bus-coresight-devices-tpdm280
-rw-r--r--Documentation/ABI/testing/sysfs-bus-coresight-devices-trbe6
-rw-r--r--Documentation/ABI/testing/sysfs-bus-coresight-devices-ultra_smb31
-rw-r--r--Documentation/ABI/testing/sysfs-bus-counter132
-rw-r--r--Documentation/ABI/testing/sysfs-bus-css15
-rw-r--r--Documentation/ABI/testing/sysfs-bus-cxl571
-rw-r--r--Documentation/ABI/testing/sysfs-bus-dax153
-rw-r--r--Documentation/ABI/testing/sysfs-bus-event_source-devices24
-rw-r--r--Documentation/ABI/testing/sysfs-bus-event_source-devices-caps24
-rw-r--r--Documentation/ABI/testing/sysfs-bus-event_source-devices-events12
-rw-r--r--Documentation/ABI/testing/sysfs-bus-event_source-devices-hisi_ptt113
-rw-r--r--Documentation/ABI/testing/sysfs-bus-event_source-devices-hv_gpci160
-rw-r--r--Documentation/ABI/testing/sysfs-bus-event_source-devices-iommu37
-rw-r--r--Documentation/ABI/testing/sysfs-bus-event_source-devices-vpa-dtl25
-rw-r--r--Documentation/ABI/testing/sysfs-bus-event_source-devices-vpa-pmu25
-rw-r--r--Documentation/ABI/testing/sysfs-bus-fcoe2
-rw-r--r--Documentation/ABI/testing/sysfs-bus-fsi-devices-sbefifo6
-rw-r--r--Documentation/ABI/testing/sysfs-bus-i2c-devices-fsa94802
-rw-r--r--Documentation/ABI/testing/sysfs-bus-i2c-devices-m24lr100
-rw-r--r--Documentation/ABI/testing/sysfs-bus-i2c-devices-turris-omnia-mcu113
-rw-r--r--Documentation/ABI/testing/sysfs-bus-i3c19
-rw-r--r--Documentation/ABI/testing/sysfs-bus-iio627
-rw-r--r--Documentation/ABI/testing/sysfs-bus-iio-ad9739a19
-rw-r--r--Documentation/ABI/testing/sysfs-bus-iio-adc-ad-sigma-delta23
-rw-r--r--Documentation/ABI/testing/sysfs-bus-iio-adc-ad413020
-rw-r--r--Documentation/ABI/testing/sysfs-bus-iio-adc-ad719224
-rw-r--r--Documentation/ABI/testing/sysfs-bus-iio-adc-ad7280a13
-rw-r--r--Documentation/ABI/testing/sysfs-bus-iio-adc-max1141013
-rw-r--r--Documentation/ABI/testing/sysfs-bus-iio-adc-max961117
-rw-r--r--Documentation/ABI/testing/sysfs-bus-iio-adc-mcp356453
-rw-r--r--Documentation/ABI/testing/sysfs-bus-iio-adc-pac19349
-rw-r--r--Documentation/ABI/testing/sysfs-bus-iio-bno05581
-rw-r--r--Documentation/ABI/testing/sysfs-bus-iio-cdc-ad774611
-rw-r--r--Documentation/ABI/testing/sysfs-bus-iio-chemical-sgp4014
-rw-r--r--Documentation/ABI/testing/sysfs-bus-iio-cros-ec10
-rw-r--r--Documentation/ABI/testing/sysfs-bus-iio-dac61
-rw-r--r--Documentation/ABI/testing/sysfs-bus-iio-dac-ltc268855
-rw-r--r--Documentation/ABI/testing/sysfs-bus-iio-filter-admv88184
-rw-r--r--Documentation/ABI/testing/sysfs-bus-iio-frequency-admv10134
-rw-r--r--Documentation/ABI/testing/sysfs-bus-iio-frequency-admv101423
-rw-r--r--Documentation/ABI/testing/sysfs-bus-iio-ina2xx-adc9
-rw-r--r--Documentation/ABI/testing/sysfs-bus-iio-inv_icm4260018
-rw-r--r--Documentation/ABI/testing/sysfs-bus-iio-proximity2
-rw-r--r--Documentation/ABI/testing/sysfs-bus-iio-resolver-ad2s121027
-rw-r--r--Documentation/ABI/testing/sysfs-bus-iio-sx932429
-rw-r--r--Documentation/ABI/testing/sysfs-bus-iio-temperature-max3185631
-rw-r--r--Documentation/ABI/testing/sysfs-bus-iio-temperature-max3186520
-rw-r--r--Documentation/ABI/testing/sysfs-bus-iio-thermocouple18
-rw-r--r--Documentation/ABI/testing/sysfs-bus-iio-timer-stm328
-rw-r--r--Documentation/ABI/testing/sysfs-bus-iio-vf6102
-rw-r--r--Documentation/ABI/testing/sysfs-bus-nfit2
-rw-r--r--Documentation/ABI/testing/sysfs-bus-nvdimm51
-rw-r--r--Documentation/ABI/testing/sysfs-bus-optee-devices9
-rw-r--r--Documentation/ABI/testing/sysfs-bus-papr-pmem16
-rw-r--r--Documentation/ABI/testing/sysfs-bus-pci245
-rw-r--r--Documentation/ABI/testing/sysfs-bus-pci-devices-aer163
-rw-r--r--Documentation/ABI/testing/sysfs-bus-pci-devices-aer_stats119
-rw-r--r--Documentation/ABI/testing/sysfs-bus-pci-devices-avs8
-rw-r--r--Documentation/ABI/testing/sysfs-bus-pci-drivers-xhci_hcd62
-rw-r--r--Documentation/ABI/testing/sysfs-bus-peci16
-rw-r--r--Documentation/ABI/testing/sysfs-bus-platform-devices-ampere-smpro325
-rw-r--r--Documentation/ABI/testing/sysfs-bus-platform-drivers-amd_x3d_vcache12
-rw-r--r--Documentation/ABI/testing/sysfs-bus-platform-onboard-usb-dev9
-rw-r--r--Documentation/ABI/testing/sysfs-bus-spi-devices-spi-nor9
-rw-r--r--Documentation/ABI/testing/sysfs-bus-surface_aggregator-tabletsw57
-rw-r--r--Documentation/ABI/testing/sysfs-bus-thunderbolt52
-rw-r--r--Documentation/ABI/testing/sysfs-bus-umc28
-rw-r--r--Documentation/ABI/testing/sysfs-bus-usb102
-rw-r--r--Documentation/ABI/testing/sysfs-bus-vdpa14
-rw-r--r--Documentation/ABI/testing/sysfs-bus-wmi81
-rw-r--r--Documentation/ABI/testing/sysfs-class2
-rw-r--r--Documentation/ABI/testing/sysfs-class-bdi68
-rw-r--r--Documentation/ABI/testing/sysfs-class-chromeos20
-rw-r--r--Documentation/ABI/testing/sysfs-class-devfreq12
-rw-r--r--Documentation/ABI/testing/sysfs-class-drm8
-rw-r--r--Documentation/ABI/testing/sysfs-class-firmware77
-rw-r--r--Documentation/ABI/testing/sysfs-class-firmware-attributes193
-rw-r--r--Documentation/ABI/testing/sysfs-class-hwmon163
-rw-r--r--Documentation/ABI/testing/sysfs-class-intel_pmt-features134
-rw-r--r--Documentation/ABI/testing/sysfs-class-led6
-rw-r--r--Documentation/ABI/testing/sysfs-class-led-driver-aw200xx5
-rw-r--r--Documentation/ABI/testing/sysfs-class-led-driver-turris-omnia14
-rw-r--r--Documentation/ABI/testing/sysfs-class-led-trigger-netdev140
-rw-r--r--Documentation/ABI/testing/sysfs-class-led-trigger-pattern10
-rw-r--r--Documentation/ABI/testing/sysfs-class-led-trigger-tty58
-rw-r--r--Documentation/ABI/testing/sysfs-class-mtd2
-rw-r--r--Documentation/ABI/testing/sysfs-class-net2
-rw-r--r--Documentation/ABI/testing/sysfs-class-net-peak_usb19
-rw-r--r--Documentation/ABI/testing/sysfs-class-net-phydev10
-rw-r--r--Documentation/ABI/testing/sysfs-class-net-qmi2
-rw-r--r--Documentation/ABI/testing/sysfs-class-net-queues47
-rw-r--r--Documentation/ABI/testing/sysfs-class-net-statistics48
-rw-r--r--Documentation/ABI/testing/sysfs-class-pktcdvd97
-rw-r--r--Documentation/ABI/testing/sysfs-class-platform-profile50
-rw-r--r--Documentation/ABI/testing/sysfs-class-power174
-rw-r--r--Documentation/ABI/testing/sysfs-class-power-gaokun27
-rw-r--r--Documentation/ABI/testing/sysfs-class-power-max1720x32
-rw-r--r--Documentation/ABI/testing/sysfs-class-power-rt946719
-rw-r--r--Documentation/ABI/testing/sysfs-class-power-rt947132
-rw-r--r--Documentation/ABI/testing/sysfs-class-power-rt975630
-rw-r--r--Documentation/ABI/testing/sysfs-class-power-wilco2
-rw-r--r--Documentation/ABI/testing/sysfs-class-pwm2
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-rw-r--r--Documentation/ABI/testing/sysfs-class-rtrs-client2
-rw-r--r--Documentation/ABI/testing/sysfs-class-rtrs-server2
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-rw-r--r--Documentation/ABI/testing/sysfs-class-thermal4
-rw-r--r--Documentation/ABI/testing/sysfs-class-tsm19
-rw-r--r--Documentation/ABI/testing/sysfs-class-typec35
-rw-r--r--Documentation/ABI/testing/sysfs-class-usb_power_delivery284
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-rw-r--r--Documentation/ABI/testing/sysfs-devices-pci-host-bridge45
-rw-r--r--Documentation/ABI/testing/sysfs-devices-physical_location42
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-rw-r--r--Documentation/ABI/testing/sysfs-devices-platform-kunpeng_hccs126
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-rw-r--r--Documentation/ABI/testing/sysfs-driver-aspeed-uart-routing6
-rw-r--r--Documentation/ABI/testing/sysfs-driver-bd9571mwv-regulator2
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-rw-r--r--Documentation/ABI/testing/sysfs-driver-intel-i915-hwmon93
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diff --git a/Documentation/.renames.txt b/Documentation/.renames.txt
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+x86/kernel-stacks arch/x86/kernel-stacks
+x86/mds arch/x86/mds
+x86/microcode arch/x86/microcode
+x86/mtrr arch/x86/mtrr
+x86/orc-unwinder arch/x86/orc-unwinder
+x86/pat arch/x86/pat
+x86/protection-keys core-api/protection-keys
+x86/pti arch/x86/pti
+x86/resctrl filesystems/resctrl
+x86/resctrl_ui filesystems/resctrl
+x86/sgx arch/x86/sgx
+x86/sva arch/x86/sva
+x86/tdx arch/x86/tdx
+x86/tlb arch/x86/tlb
+x86/topology arch/x86/topology
+x86/tsx_async_abort arch/x86/tsx_async_abort
+x86/usb-legacy-support arch/x86/usb-legacy-support
+x86/x86_64/5level-paging arch/x86/x86_64/5level-paging
+x86/x86_64/cpu-hotplug-spec arch/x86/x86_64/cpu-hotplug-spec
+x86/x86_64/fake-numa-for-cpusets arch/x86/x86_64/fake-numa-for-cpusets
+x86/x86_64/fsgs arch/x86/x86_64/fsgs
+x86/x86_64/index arch/x86/x86_64/index
+x86/x86_64/machinecheck arch/x86/x86_64/machinecheck
+x86/x86_64/mm arch/x86/x86_64/mm
+x86/x86_64/uefi arch/x86/x86_64/uefi
+x86/xstate arch/x86/xstate
+x86/zero-page arch/x86/zero-page
+xilinx/eemi driver-api/xilinx/eemi
+xilinx/index driver-api/xilinx/index
+xtensa/atomctl arch/xtensa/atomctl
+xtensa/booting arch/xtensa/booting
+xtensa/features arch/xtensa/features
+xtensa/index arch/xtensa/index
+xtensa/mmu arch/xtensa/mmu
diff --git a/Documentation/ABI/README b/Documentation/ABI/README
index 8bac9cb09a6d..315fffe1f831 100644
--- a/Documentation/ABI/README
+++ b/Documentation/ABI/README
@@ -1,4 +1,5 @@
-This directory attempts to document the ABI between the Linux kernel and
+This part of the documentation inside Documentation/ABI directory
+attempts to document the ABI between the Linux kernel and
userspace, and the relative stability of these interfaces. Due to the
everchanging nature of Linux, and the differing maturity levels, these
interfaces should be used by userspace programs in different ways.
@@ -45,7 +46,9 @@ Every file in these directories will contain the following information:
What: Short description of the interface
Date: Date created
-KernelVersion: Kernel version this feature first showed up in.
+KernelVersion: (Optional) Kernel version this feature first showed up in.
+ Note: git history often provides more accurate version
+ info, so this field may be omitted.
Contact: Primary contact for this interface (may be a mailing list)
Description: Long description of the interface and how to use it.
Users: All users of this interface who wish to be notified when
diff --git a/Documentation/ABI/obsolete/automount-tracefs-debugfs b/Documentation/ABI/obsolete/automount-tracefs-debugfs
new file mode 100644
index 000000000000..a5196ec78cb5
--- /dev/null
+++ b/Documentation/ABI/obsolete/automount-tracefs-debugfs
@@ -0,0 +1,20 @@
+What: /sys/kernel/debug/tracing
+Date: May 2008
+KernelVersion: 2.6.27
+Contact: linux-trace-kernel@vger.kernel.org
+Description:
+
+ The ftrace was first added to the kernel, its interface was placed
+ into the debugfs file system under the "tracing" directory. Access
+ to the files were in /sys/kernel/debug/tracing. As systems wanted
+ access to the tracing interface without having to enable debugfs, a
+ new interface was created called "tracefs". This was a stand alone
+ file system and was usually mounted in /sys/kernel/tracing.
+
+ To allow older tooling to continue to operate, when mounting
+ debugfs, the tracefs file system would automatically get mounted in
+ the "tracing" directory of debugfs. The tracefs interface was added
+ in January 2015 in the v4.1 kernel.
+
+ All tooling should now be using tracefs directly and the "tracing"
+ directory in debugfs should be removed by January 2030.
diff --git a/Documentation/ABI/obsolete/o2cb b/Documentation/ABI/obsolete/o2cb
index fe7e45e17bc7..8f39b596731d 100644
--- a/Documentation/ABI/obsolete/o2cb
+++ b/Documentation/ABI/obsolete/o2cb
@@ -1,11 +1,11 @@
What: /sys/o2cb
Date: Dec 2005
KernelVersion: 2.6.16
-Contact: ocfs2-devel@oss.oracle.com
+Contact: ocfs2-devel@lists.linux.dev
Description: Ocfs2-tools looks at 'interface-revision' for versioning
information. Each logmask/ file controls a set of debug prints
and can be written into with the strings "allow", "deny", or
"off". Reading the file returns the current state.
Was renamed to /sys/fs/u2cb/
Users: ocfs2-tools. It's sufficient to mail proposed changes to
- ocfs2-devel@oss.oracle.com.
+ ocfs2-devel@lists.linux.dev.
diff --git a/Documentation/ABI/obsolete/procfs-i8k b/Documentation/ABI/obsolete/procfs-i8k
new file mode 100644
index 000000000000..32df4d5bdd15
--- /dev/null
+++ b/Documentation/ABI/obsolete/procfs-i8k
@@ -0,0 +1,10 @@
+What: /proc/i8k
+Date: November 2001
+KernelVersion: 2.4.14
+Contact: Pali Rohár <pali@kernel.org>
+Description: Legacy interface for getting/setting sensor information like
+ fan speed, temperature, serial number, hotkey status etc
+ on Dell Laptops.
+ Since the driver is now using the standard hwmon sysfs interface,
+ the procfs interface is deprecated.
+Users: https://github.com/vitorafsr/i8kutils
diff --git a/Documentation/ABI/obsolete/sysfs-bus-iio b/Documentation/ABI/obsolete/sysfs-bus-iio
index b64394b0b374..a13523561958 100644
--- a/Documentation/ABI/obsolete/sysfs-bus-iio
+++ b/Documentation/ABI/obsolete/sysfs-bus-iio
@@ -48,10 +48,6 @@ What: /sys/.../iio:deviceX/scan_elements/in_timestamp_en
What: /sys/.../iio:deviceX/scan_elements/in_voltageY_supply_en
What: /sys/.../iio:deviceX/scan_elements/in_voltageY_en
What: /sys/.../iio:deviceX/scan_elements/in_voltageY-voltageZ_en
-What: /sys/.../iio:deviceX/scan_elements/in_voltageY_i_en
-What: /sys/.../iio:deviceX/scan_elements/in_voltageY_q_en
-What: /sys/.../iio:deviceX/scan_elements/in_voltage_i_en
-What: /sys/.../iio:deviceX/scan_elements/in_voltage_q_en
What: /sys/.../iio:deviceX/scan_elements/in_incli_x_en
What: /sys/.../iio:deviceX/scan_elements/in_incli_y_en
What: /sys/.../iio:deviceX/scan_elements/in_pressureY_en
@@ -73,10 +69,6 @@ What: /sys/.../iio:deviceX/scan_elements/in_incli_type
What: /sys/.../iio:deviceX/scan_elements/in_voltageY_type
What: /sys/.../iio:deviceX/scan_elements/in_voltage_type
What: /sys/.../iio:deviceX/scan_elements/in_voltageY_supply_type
-What: /sys/.../iio:deviceX/scan_elements/in_voltageY_i_type
-What: /sys/.../iio:deviceX/scan_elements/in_voltageY_q_type
-What: /sys/.../iio:deviceX/scan_elements/in_voltage_i_type
-What: /sys/.../iio:deviceX/scan_elements/in_voltage_q_type
What: /sys/.../iio:deviceX/scan_elements/in_timestamp_type
What: /sys/.../iio:deviceX/scan_elements/in_pressureY_type
What: /sys/.../iio:deviceX/scan_elements/in_pressure_type
@@ -110,10 +102,6 @@ Description:
What: /sys/.../iio:deviceX/scan_elements/in_voltageY_index
What: /sys/.../iio:deviceX/scan_elements/in_voltageY_supply_index
-What: /sys/.../iio:deviceX/scan_elements/in_voltageY_i_index
-What: /sys/.../iio:deviceX/scan_elements/in_voltageY_q_index
-What: /sys/.../iio:deviceX/scan_elements/in_voltage_i_index
-What: /sys/.../iio:deviceX/scan_elements/in_voltage_q_index
What: /sys/.../iio:deviceX/scan_elements/in_accel_x_index
What: /sys/.../iio:deviceX/scan_elements/in_accel_y_index
What: /sys/.../iio:deviceX/scan_elements/in_accel_z_index
diff --git a/Documentation/ABI/obsolete/sysfs-driver-samsung-laptop b/Documentation/ABI/obsolete/sysfs-driver-samsung-laptop
new file mode 100644
index 000000000000..204c3f3a1d78
--- /dev/null
+++ b/Documentation/ABI/obsolete/sysfs-driver-samsung-laptop
@@ -0,0 +1,10 @@
+What: /sys/devices/platform/samsung/battery_life_extender
+Date: December 1, 2011
+KernelVersion: 3.3
+Contact: Corentin Chary <corentin.chary@gmail.com>
+Description: Max battery charge level can be modified, battery cycle
+ life can be extended by reducing the max battery charge
+ level.
+
+ - 0 means normal battery mode (100% charge)
+ - 1 means battery life extender mode (80% charge)
diff --git a/Documentation/ABI/obsolete/sysfs-gpio b/Documentation/ABI/obsolete/sysfs-gpio
index b8b0fd341c17..0d3f12c4dcbd 100644
--- a/Documentation/ABI/obsolete/sysfs-gpio
+++ b/Documentation/ABI/obsolete/sysfs-gpio
@@ -19,14 +19,22 @@ Description:
/export ... asks the kernel to export a GPIO to userspace
/unexport ... to return a GPIO to the kernel
/gpioN ... for each exported GPIO #N OR
- /<LINE-NAME> ... for a properly named GPIO line
/value ... always readable, writes fail for input GPIOs
/direction ... r/w as: in, out (default low); write: high, low
/edge ... r/w as: none, falling, rising, both
+ /active_low ... r/w as: 0, 1
/gpiochipN ... for each gpiochip; #N is its first GPIO
/base ... (r/o) same as N
- /label ... (r/o) descriptive, not necessarily unique
+ /label ... (r/o) descriptive chip name
/ngpio ... (r/o) number of GPIOs; numbered N to N + (ngpio - 1)
+ /gpio<OFFSET>
+ /value ... always readable, writes fail for input GPIOs
+ /direction ... r/w as: in, out (default low); write: high, low
+ /chipX ... for each gpiochip; #X is the gpio device ID
+ /export ... asks the kernel to export a GPIO at HW offset X to userspace
+ /unexport ... to return a GPIO at HW offset X to the kernel
+ /label ... (r/o) descriptive chip name
+ /ngpio ... (r/o) number of GPIOs exposed by the chip
- This ABI is deprecated and will be removed after 2020. It is
- replaced with the GPIO character device.
+ This ABI is obsoleted by Documentation/ABI/testing/gpio-cdev and will be
+ removed after 2020.
diff --git a/Documentation/ABI/obsolete/sysfs-kernel-kexec-kdump b/Documentation/ABI/obsolete/sysfs-kernel-kexec-kdump
new file mode 100644
index 000000000000..ba26a6a1d2be
--- /dev/null
+++ b/Documentation/ABI/obsolete/sysfs-kernel-kexec-kdump
@@ -0,0 +1,71 @@
+NOTE: all the ABIs listed in this file are deprecated and will be removed after 2028.
+
+Here are the alternative ABIs:
++------------------------------------+-----------------------------------------+
+| Deprecated | Alternative |
++------------------------------------+-----------------------------------------+
+| /sys/kernel/kexec_loaded | /sys/kernel/kexec/loaded |
++------------------------------------+-----------------------------------------+
+| /sys/kernel/kexec_crash_loaded | /sys/kernel/kexec/crash_loaded |
++------------------------------------+-----------------------------------------+
+| /sys/kernel/kexec_crash_size | /sys/kernel/kexec/crash_size |
++------------------------------------+-----------------------------------------+
+| /sys/kernel/crash_elfcorehdr_size | /sys/kernel/kexec/crash_elfcorehdr_size |
++------------------------------------+-----------------------------------------+
+| /sys/kernel/kexec_crash_cma_ranges | /sys/kernel/kexec/crash_cma_ranges |
++------------------------------------+-----------------------------------------+
+
+
+What: /sys/kernel/kexec_loaded
+Date: Jun 2006
+Contact: kexec@lists.infradead.org
+Description: read only
+ Indicates whether a new kernel image has been loaded
+ into memory using the kexec system call. It shows 1 if
+ a kexec image is present and ready to boot, or 0 if none
+ is loaded.
+User: kexec tools, kdump service
+
+What: /sys/kernel/kexec_crash_loaded
+Date: Jun 2006
+Contact: kexec@lists.infradead.org
+Description: read only
+ Indicates whether a crash (kdump) kernel is currently
+ loaded into memory. It shows 1 if a crash kernel has been
+ successfully loaded for panic handling, or 0 if no crash
+ kernel is present.
+User: Kexec tools, Kdump service
+
+What: /sys/kernel/kexec_crash_size
+Date: Dec 2009
+Contact: kexec@lists.infradead.org
+Description: read/write
+ Shows the amount of memory reserved for loading the crash
+ (kdump) kernel. It reports the size, in bytes, of the
+ crash kernel area defined by the crashkernel= parameter.
+ This interface also allows reducing the crashkernel
+ reservation by writing a smaller value, and the reclaimed
+ space is added back to the system RAM.
+User: Kdump service
+
+What: /sys/kernel/crash_elfcorehdr_size
+Date: Aug 2023
+Contact: kexec@lists.infradead.org
+Description: read only
+ Indicates the preferred size of the memory buffer for the
+ ELF core header used by the crash (kdump) kernel. It defines
+ how much space is needed to hold metadata about the crashed
+ system, including CPU and memory information. This information
+ is used by the user space utility kexec to support updating the
+ in-kernel kdump image during hotplug operations.
+User: Kexec tools
+
+What: /sys/kernel/kexec_crash_cma_ranges
+Date: Nov 2025
+Contact: kexec@lists.infradead.org
+Description: read only
+ Provides information about the memory ranges reserved from
+ the Contiguous Memory Allocator (CMA) area that are allocated
+ to the crash (kdump) kernel. It lists the start and end physical
+ addresses of CMA regions assigned for crashkernel use.
+User: kdump service
diff --git a/Documentation/ABI/obsolete/sysfs-platform-ideapad-laptop b/Documentation/ABI/obsolete/sysfs-platform-ideapad-laptop
new file mode 100644
index 000000000000..c1dbd19c679c
--- /dev/null
+++ b/Documentation/ABI/obsolete/sysfs-platform-ideapad-laptop
@@ -0,0 +1,8 @@
+What: /sys/bus/platform/devices/VPC2004:*/conservation_mode
+Date: Aug 2017
+KernelVersion: 4.14
+Contact: platform-driver-x86@vger.kernel.org
+Description:
+ Controls whether the conservation mode is enabled or not.
+ This feature limits the maximum battery charge percentage to
+ around 50-60% in order to prolong the lifetime of the battery.
diff --git a/Documentation/ABI/obsolete/sysfs-selinux-user b/Documentation/ABI/obsolete/sysfs-selinux-user
new file mode 100644
index 000000000000..8ab7557f283f
--- /dev/null
+++ b/Documentation/ABI/obsolete/sysfs-selinux-user
@@ -0,0 +1,12 @@
+What: /sys/fs/selinux/user
+Date: April 2005 (predates git)
+KernelVersion: 2.6.12-rc2 (predates git)
+Contact: selinux@vger.kernel.org
+Description:
+
+ The selinuxfs "user" node allows userspace to request a list
+ of security contexts that can be reached for a given SELinux
+ user from a given starting context. This was used by libselinux
+ when various login-style programs requested contexts for
+ users, but libselinux stopped using it in 2020.
+ Kernel support will be removed no sooner than Dec 2025.
diff --git a/Documentation/ABI/removed/o2cb b/Documentation/ABI/removed/o2cb
index 20c91adca6d4..61cff238fbe8 100644
--- a/Documentation/ABI/removed/o2cb
+++ b/Documentation/ABI/removed/o2cb
@@ -1,10 +1,10 @@
What: /sys/o2cb symlink
Date: May 2011
KernelVersion: 3.0
-Contact: ocfs2-devel@oss.oracle.com
+Contact: ocfs2-devel@lists.linux.dev
Description: This is a symlink: /sys/o2cb to /sys/fs/o2cb. The symlink is
removed when new versions of ocfs2-tools which know to look
in /sys/fs/o2cb are sufficiently prevalent. Don't code new
software to look here, it should try /sys/fs/o2cb instead.
Users: ocfs2-tools. It's sufficient to mail proposed changes to
- ocfs2-devel@oss.oracle.com.
+ ocfs2-devel@lists.linux.dev.
diff --git a/Documentation/ABI/testing/sysfs-class-cxl b/Documentation/ABI/removed/sysfs-class-cxl
index 3c77677e0ca7..266c413b96e8 100644
--- a/Documentation/ABI/testing/sysfs-class-cxl
+++ b/Documentation/ABI/removed/sysfs-class-cxl
@@ -1,3 +1,5 @@
+The cxl driver was removed in 6.15.
+
Please note that attributes that are shared between devices are stored in
the directory pointed to by the symlink device/.
For example, the real path of the attribute /sys/class/cxl/afu0.0s/irqs_max is
@@ -7,7 +9,7 @@ For example, the real path of the attribute /sys/class/cxl/afu0.0s/irqs_max is
Slave contexts (eg. /sys/class/cxl/afu0.0s):
What: /sys/class/cxl/<afu>/afu_err_buf
-Date: September 2014
+Date: September 2014, removed February 2025
Contact: linuxppc-dev@lists.ozlabs.org
Description: read only
AFU Error Buffer contents. The contents of this file are
@@ -18,7 +20,7 @@ Description: read only
What: /sys/class/cxl/<afu>/irqs_max
-Date: September 2014
+Date: September 2014, removed February 2025
Contact: linuxppc-dev@lists.ozlabs.org
Description: read/write
Decimal value of maximum number of interrupts that can be
@@ -29,7 +31,7 @@ Description: read/write
Users: https://github.com/ibm-capi/libcxl
What: /sys/class/cxl/<afu>/irqs_min
-Date: September 2014
+Date: September 2014, removed February 2025
Contact: linuxppc-dev@lists.ozlabs.org
Description: read only
Decimal value of the minimum number of interrupts that
@@ -39,15 +41,15 @@ Description: read only
Users: https://github.com/ibm-capi/libcxl
What: /sys/class/cxl/<afu>/mmio_size
-Date: September 2014
+Date: September 2014, removed February 2025
Contact: linuxppc-dev@lists.ozlabs.org
Description: read only
- Decimal value of the size of the MMIO space that may be mmaped
+ Decimal value of the size of the MMIO space that may be mmapped
by userspace.
Users: https://github.com/ibm-capi/libcxl
What: /sys/class/cxl/<afu>/modes_supported
-Date: September 2014
+Date: September 2014, removed February 2025
Contact: linuxppc-dev@lists.ozlabs.org
Description: read only
List of the modes this AFU supports. One per line.
@@ -55,7 +57,7 @@ Description: read only
Users: https://github.com/ibm-capi/libcxl
What: /sys/class/cxl/<afu>/mode
-Date: September 2014
+Date: September 2014, removed February 2025
Contact: linuxppc-dev@lists.ozlabs.org
Description: read/write
The current mode the AFU is using. Will be one of the modes
@@ -65,7 +67,7 @@ Users: https://github.com/ibm-capi/libcxl
What: /sys/class/cxl/<afu>/prefault_mode
-Date: September 2014
+Date: September 2014, removed February 2025
Contact: linuxppc-dev@lists.ozlabs.org
Description: read/write
Set the mode for prefaulting in segments into the segment table
@@ -85,7 +87,7 @@ Description: read/write
Users: https://github.com/ibm-capi/libcxl
What: /sys/class/cxl/<afu>/reset
-Date: September 2014
+Date: September 2014, removed February 2025
Contact: linuxppc-dev@lists.ozlabs.org
Description: write only
Writing 1 here will reset the AFU provided there are not
@@ -93,18 +95,18 @@ Description: write only
Users: https://github.com/ibm-capi/libcxl
What: /sys/class/cxl/<afu>/api_version
-Date: September 2014
+Date: September 2014, removed February 2025
Contact: linuxppc-dev@lists.ozlabs.org
Description: read only
Decimal value of the current version of the kernel/user API.
Users: https://github.com/ibm-capi/libcxl
What: /sys/class/cxl/<afu>/api_version_compatible
-Date: September 2014
+Date: September 2014, removed February 2025
Contact: linuxppc-dev@lists.ozlabs.org
Description: read only
- Decimal value of the the lowest version of the userspace API
- this this kernel supports.
+ Decimal value of the lowest version of the userspace API
+ this kernel supports.
Users: https://github.com/ibm-capi/libcxl
@@ -114,7 +116,7 @@ An AFU may optionally export one or more PCIe like configuration records, known
as AFU configuration records, which will show up here (if present).
What: /sys/class/cxl/<afu>/cr<config num>/vendor
-Date: February 2015
+Date: February 2015, removed February 2025
Contact: linuxppc-dev@lists.ozlabs.org
Description: read only
Hexadecimal value of the vendor ID found in this AFU
@@ -122,7 +124,7 @@ Description: read only
Users: https://github.com/ibm-capi/libcxl
What: /sys/class/cxl/<afu>/cr<config num>/device
-Date: February 2015
+Date: February 2015, removed February 2025
Contact: linuxppc-dev@lists.ozlabs.org
Description: read only
Hexadecimal value of the device ID found in this AFU
@@ -130,7 +132,7 @@ Description: read only
Users: https://github.com/ibm-capi/libcxl
What: /sys/class/cxl/<afu>/cr<config num>/class
-Date: February 2015
+Date: February 2015, removed February 2025
Contact: linuxppc-dev@lists.ozlabs.org
Description: read only
Hexadecimal value of the class code found in this AFU
@@ -138,7 +140,7 @@ Description: read only
Users: https://github.com/ibm-capi/libcxl
What: /sys/class/cxl/<afu>/cr<config num>/config
-Date: February 2015
+Date: February 2015, removed February 2025
Contact: linuxppc-dev@lists.ozlabs.org
Description: read only
This binary file provides raw access to the AFU configuration
@@ -152,22 +154,22 @@ Users: https://github.com/ibm-capi/libcxl
Master contexts (eg. /sys/class/cxl/afu0.0m)
What: /sys/class/cxl/<afu>m/mmio_size
-Date: September 2014
+Date: September 2014, removed February 2025
Contact: linuxppc-dev@lists.ozlabs.org
Description: read only
- Decimal value of the size of the MMIO space that may be mmaped
+ Decimal value of the size of the MMIO space that may be mmapped
by userspace. This includes all slave contexts space also.
Users: https://github.com/ibm-capi/libcxl
What: /sys/class/cxl/<afu>m/pp_mmio_len
-Date: September 2014
+Date: September 2014, removed February 2025
Contact: linuxppc-dev@lists.ozlabs.org
Description: read only
Decimal value of the Per Process MMIO space length.
Users: https://github.com/ibm-capi/libcxl
What: /sys/class/cxl/<afu>m/pp_mmio_off
-Date: September 2014
+Date: September 2014, removed February 2025
Contact: linuxppc-dev@lists.ozlabs.org
Description: read only
(not in a guest)
@@ -178,21 +180,21 @@ Users: https://github.com/ibm-capi/libcxl
Card info (eg. /sys/class/cxl/card0)
What: /sys/class/cxl/<card>/caia_version
-Date: September 2014
+Date: September 2014, removed February 2025
Contact: linuxppc-dev@lists.ozlabs.org
Description: read only
Identifies the CAIA Version the card implements.
Users: https://github.com/ibm-capi/libcxl
What: /sys/class/cxl/<card>/psl_revision
-Date: September 2014
+Date: September 2014, removed February 2025
Contact: linuxppc-dev@lists.ozlabs.org
Description: read only
Identifies the revision level of the PSL.
Users: https://github.com/ibm-capi/libcxl
What: /sys/class/cxl/<card>/base_image
-Date: September 2014
+Date: September 2014, removed February 2025
Contact: linuxppc-dev@lists.ozlabs.org
Description: read only
(not in a guest)
@@ -203,7 +205,7 @@ Description: read only
Users: https://github.com/ibm-capi/libcxl
What: /sys/class/cxl/<card>/image_loaded
-Date: September 2014
+Date: September 2014, removed February 2025
Contact: linuxppc-dev@lists.ozlabs.org
Description: read only
(not in a guest)
@@ -212,7 +214,7 @@ Description: read only
Users: https://github.com/ibm-capi/libcxl
What: /sys/class/cxl/<card>/load_image_on_perst
-Date: December 2014
+Date: December 2014, removed February 2025
Contact: linuxppc-dev@lists.ozlabs.org
Description: read/write
(not in a guest)
@@ -229,7 +231,7 @@ Description: read/write
Users: https://github.com/ibm-capi/libcxl
What: /sys/class/cxl/<card>/reset
-Date: October 2014
+Date: October 2014, removed February 2025
Contact: linuxppc-dev@lists.ozlabs.org
Description: write only
Writing 1 will issue a PERST to card provided there are no
@@ -240,7 +242,7 @@ Description: write only
Users: https://github.com/ibm-capi/libcxl
What: /sys/class/cxl/<card>/perst_reloads_same_image
-Date: July 2015
+Date: July 2015, removed February 2025
Contact: linuxppc-dev@lists.ozlabs.org
Description: read/write
(not in a guest)
@@ -254,7 +256,7 @@ Description: read/write
Users: https://github.com/ibm-capi/libcxl
What: /sys/class/cxl/<card>/psl_timebase_synced
-Date: March 2016
+Date: March 2016, removed February 2025
Contact: linuxppc-dev@lists.ozlabs.org
Description: read only
Returns 1 if the psl timebase register is synchronized
@@ -262,7 +264,7 @@ Description: read only
Users: https://github.com/ibm-capi/libcxl
What: /sys/class/cxl/<card>/tunneled_ops_supported
-Date: May 2018
+Date: May 2018, removed February 2025
Contact: linuxppc-dev@lists.ozlabs.org
Description: read only
Returns 1 if tunneled operations are supported in capi mode,
diff --git a/Documentation/ABI/removed/sysfs-class-rfkill b/Documentation/ABI/removed/sysfs-class-rfkill
index f25174eafd55..20cb688af173 100644
--- a/Documentation/ABI/removed/sysfs-class-rfkill
+++ b/Documentation/ABI/removed/sysfs-class-rfkill
@@ -4,7 +4,7 @@ For details to this subsystem look at Documentation/driver-api/rfkill.rst.
What: /sys/class/rfkill/rfkill[0-9]+/claim
Date: 09-Jul-2007
-KernelVersion v2.6.22
+KernelVersion: v2.6.22
Contact: linux-wireless@vger.kernel.org
Description: This file was deprecated because there no longer was a way to
claim just control over a single rfkill instance.
diff --git a/Documentation/ABI/removed/sysfs-firmware-efi-vars b/Documentation/ABI/removed/sysfs-firmware-efi-vars
new file mode 100644
index 000000000000..8d97368b149b
--- /dev/null
+++ b/Documentation/ABI/removed/sysfs-firmware-efi-vars
@@ -0,0 +1,12 @@
+What: /sys/firmware/efi/vars
+Date: April 2004, removed March 2023
+Description:
+ This directory exposed interfaces for interacting with
+ EFI variables. For more information on EFI variables,
+ see 'Variable Services' in the UEFI specification
+ (section 7.2 in specification version 2.3 Errata D).
+
+ The 'efivars' sysfs interface was removed in March of 2023,
+ after being considered deprecated no later than September
+ of 2020. Its functionality has been replaced by the
+ 'efivarfs' filesystem.
diff --git a/Documentation/ABI/removed/sysfs-mce b/Documentation/ABI/removed/sysfs-mce
new file mode 100644
index 000000000000..ef5dd2a80918
--- /dev/null
+++ b/Documentation/ABI/removed/sysfs-mce
@@ -0,0 +1,37 @@
+What: /sys/devices/system/machinecheck/machinecheckX/tolerant
+Contact: Borislav Petkov <bp@suse.de>
+Date: Dec, 2021
+Description:
+ Unused and obsolete after the advent of recoverable machine
+ checks (see last sentence below) and those are present since
+ 2010 (Nehalem).
+
+ Original description:
+
+ The entries appear for each CPU, but they are truly shared
+ between all CPUs.
+
+ Tolerance level. When a machine check exception occurs for a
+ non corrected machine check the kernel can take different
+ actions.
+
+ Since machine check exceptions can happen any time it is
+ sometimes risky for the kernel to kill a process because it
+ defies normal kernel locking rules. The tolerance level
+ configures how hard the kernel tries to recover even at some
+ risk of deadlock. Higher tolerant values trade potentially
+ better uptime with the risk of a crash or even corruption
+ (for tolerant >= 3).
+
+ == ===========================================================
+ 0 always panic on uncorrected errors, log corrected errors
+ 1 panic or SIGBUS on uncorrected errors, log corrected errors
+ 2 SIGBUS or log uncorrected errors, log corrected errors
+ 3 never panic or SIGBUS, log all errors (for testing only)
+ == ===========================================================
+
+ Default: 1
+
+ Note this only makes a difference if the CPU allows recovery
+ from a machine check exception. Current x86 CPUs generally
+ do not.
diff --git a/Documentation/ABI/obsolete/sysfs-selinux-checkreqprot b/Documentation/ABI/removed/sysfs-selinux-checkreqprot
index ed6b52ca210f..f599a0a87e8b 100644
--- a/Documentation/ABI/obsolete/sysfs-selinux-checkreqprot
+++ b/Documentation/ABI/removed/sysfs-selinux-checkreqprot
@@ -4,6 +4,9 @@ KernelVersion: 2.6.12-rc2 (predates git)
Contact: selinux@vger.kernel.org
Description:
+ REMOVAL UPDATE: The SELinux checkreqprot functionality was removed in
+ March 2023, the original deprecation notice is shown below.
+
The selinuxfs "checkreqprot" node allows SELinux to be configured
to check the protection requested by userspace for mmap/mprotect
calls instead of the actual protection applied by the kernel.
diff --git a/Documentation/ABI/obsolete/sysfs-selinux-disable b/Documentation/ABI/removed/sysfs-selinux-disable
index c340278e3cf8..cb783c64cab3 100644
--- a/Documentation/ABI/obsolete/sysfs-selinux-disable
+++ b/Documentation/ABI/removed/sysfs-selinux-disable
@@ -4,6 +4,9 @@ KernelVersion: 2.6.12-rc2 (predates git)
Contact: selinux@vger.kernel.org
Description:
+ REMOVAL UPDATE: The SELinux runtime disable functionality was removed
+ in March 2023, the original deprecation notice is shown below.
+
The selinuxfs "disable" node allows SELinux to be disabled at runtime
prior to a policy being loaded into the kernel. If disabled via this
mechanism, SELinux will remain disabled until the system is rebooted.
diff --git a/Documentation/ABI/stable/o2cb b/Documentation/ABI/stable/o2cb
index b62a967f01a0..3a83b5c54e93 100644
--- a/Documentation/ABI/stable/o2cb
+++ b/Documentation/ABI/stable/o2cb
@@ -1,10 +1,10 @@
What: /sys/fs/o2cb/
Date: Dec 2005
KernelVersion: 2.6.16
-Contact: ocfs2-devel@oss.oracle.com
+Contact: ocfs2-devel@lists.linux.dev
Description: Ocfs2-tools looks at 'interface-revision' for versioning
information. Each logmask/ file controls a set of debug prints
and can be written into with the strings "allow", "deny", or
"off". Reading the file returns the current state.
Users: ocfs2-tools. It's sufficient to mail proposed changes to
- ocfs2-devel@oss.oracle.com.
+ ocfs2-devel@lists.linux.dev.
diff --git a/Documentation/ABI/stable/sysfs-acpi-pmprofile b/Documentation/ABI/stable/sysfs-acpi-pmprofile
index 2d6314f0e4e4..cd55e421d921 100644
--- a/Documentation/ABI/stable/sysfs-acpi-pmprofile
+++ b/Documentation/ABI/stable/sysfs-acpi-pmprofile
@@ -2,16 +2,17 @@ What: /sys/firmware/acpi/pm_profile
Date: 03-Nov-2011
KernelVersion: v3.2
Contact: linux-acpi@vger.kernel.org
-Description: The ACPI pm_profile sysfs interface exports the platform
- power management (and performance) requirement expectations
- as provided by BIOS. The integer value is directly passed as
- retrieved from the FADT ACPI table.
+Description: The ACPI pm_profile sysfs interface exposes the preferred
+ power management (and performance) profile of the platform
+ as provided in the ACPI FADT Preferred_PM_Profile field.
-Values: For possible values see ACPI specification:
- 5.2.9 Fixed ACPI Description Table (FADT)
- Field: Preferred_PM_Profile
+ The integer value is directly passed as retrieved from the FADT.
- Currently these values are defined by spec:
+Values: For the possible values refer to the Preferred_PM_Profile field
+ definition in Table 5.9 "FADT Format", Section 5.2.9 "Fixed ACPI
+ Description Table (FADT)" of the ACPI specification.
+
+ As of ACPI 6.5, the following values are defined:
== =================
0 Unspecified
@@ -22,5 +23,6 @@ Values: For possible values see ACPI specification:
5 SOHO Server
6 Appliance PC
7 Performance Server
- >7 Reserved
+ 8 Tablet
+ >8 Reserved
== =================
diff --git a/Documentation/ABI/stable/sysfs-block b/Documentation/ABI/stable/sysfs-block
index 8dd3e84a8aad..0ed10aeff86b 100644
--- a/Documentation/ABI/stable/sysfs-block
+++ b/Documentation/ABI/stable/sysfs-block
@@ -21,10 +21,63 @@ Description:
device is offset from the internal allocation unit's
natural alignment.
+What: /sys/block/<disk>/atomic_write_max_bytes
+Date: February 2024
+Contact: Himanshu Madhani <himanshu.madhani@oracle.com>
+Description:
+ [RO] This parameter specifies the maximum atomic write
+ size reported by the device. This parameter is relevant
+ for merging of writes, where a merged atomic write
+ operation must not exceed this number of bytes.
+ This parameter may be greater than the value in
+ atomic_write_unit_max_bytes as
+ atomic_write_unit_max_bytes will be rounded down to a
+ power-of-two and atomic_write_unit_max_bytes may also be
+ limited by some other queue limits, such as max_segments.
+ This parameter - along with atomic_write_unit_min_bytes
+ and atomic_write_unit_max_bytes - will not be larger than
+ max_hw_sectors_kb, but may be larger than max_sectors_kb.
+
+
+What: /sys/block/<disk>/atomic_write_unit_min_bytes
+Date: February 2024
+Contact: Himanshu Madhani <himanshu.madhani@oracle.com>
+Description:
+ [RO] This parameter specifies the smallest block which can
+ be written atomically with an atomic write operation. All
+ atomic write operations must begin at a
+ atomic_write_unit_min boundary and must be multiples of
+ atomic_write_unit_min. This value must be a power-of-two.
+
+
+What: /sys/block/<disk>/atomic_write_unit_max_bytes
+Date: February 2024
+Contact: Himanshu Madhani <himanshu.madhani@oracle.com>
+Description:
+ [RO] This parameter defines the largest block which can be
+ written atomically with an atomic write operation. This
+ value must be a multiple of atomic_write_unit_min and must
+ be a power-of-two. This value will not be larger than
+ atomic_write_max_bytes.
+
+
+What: /sys/block/<disk>/atomic_write_boundary_bytes
+Date: February 2024
+Contact: Himanshu Madhani <himanshu.madhani@oracle.com>
+Description:
+ [RO] A device may need to internally split an atomic write I/O
+ which straddles a given logical block address boundary. This
+ parameter specifies the size in bytes of the atomic boundary if
+ one is reported by the device. This value must be a
+ power-of-two and at least the size as in
+ atomic_write_unit_max_bytes.
+ Any attempt to merge atomic write I/Os must not result in a
+ merged I/O which crosses this boundary (if any).
+
What: /sys/block/<disk>/diskseq
Date: February 2021
-Contact: Matteo Croce <mcroce@microsoft.com>
+Contact: Matteo Croce <teknoraver@meta.com>
Description:
The /sys/block/<disk>/diskseq files reports the disk
sequence number, which is a monotonically increasing
@@ -56,6 +109,10 @@ Contact: Martin K. Petersen <martin.petersen@oracle.com>
Description:
Indicates whether a storage device is capable of storing
integrity metadata. Set if the device is T10 PI-capable.
+ This flag is set to 1 if the storage media is formatted
+ with T10 Protection Information. If the storage media is
+ not formatted with T10 Protection Information, this flag
+ is set to 0.
What: /sys/block/<disk>/integrity/format
@@ -64,6 +121,13 @@ Contact: Martin K. Petersen <martin.petersen@oracle.com>
Description:
Metadata format for integrity capable block device.
E.g. T10-DIF-TYPE1-CRC.
+ This field describes the type of T10 Protection Information
+ that the block device can send and receive.
+ If the device can store application integrity metadata but
+ no T10 Protection Information profile is used, this field
+ contains "nop".
+ If the device does not support integrity metadata, this
+ field contains "none".
What: /sys/block/<disk>/integrity/protection_interval_bytes
@@ -89,7 +153,17 @@ Date: June 2008
Contact: Martin K. Petersen <martin.petersen@oracle.com>
Description:
Number of bytes of integrity tag space available per
- 512 bytes of data.
+ protection_interval_bytes, which is typically
+ the device's logical block size.
+ This field describes the size of the application tag
+ if the storage device is formatted with T10 Protection
+ Information and permits use of the application tag.
+ The tag_size is reported in bytes and indicates the
+ space available for adding an opaque tag to each block
+ (protection_interval_bytes).
+ If the device does not support T10 Protection Information
+ (even if the device provides application integrity
+ metadata space), this field is set to 0.
What: /sys/block/<disk>/integrity/write_generate
@@ -101,6 +175,16 @@ Description:
devices that support receiving integrity metadata.
+What: /sys/block/<disk>/partscan
+Date: May 2024
+Contact: Christoph Hellwig <hch@lst.de>
+Description:
+ The /sys/block/<disk>/partscan files reports if partition
+ scanning is enabled for the disk. It returns "1" if partition
+ scanning is enabled, or "0" if not. The value type is a 32-bit
+ unsigned integer, but only "0" and "1" are valid values.
+
+
What: /sys/block/<disk>/<partition>/alignment_offset
Date: April 2009
Contact: Martin K. Petersen <martin.petersen@oracle.com>
@@ -155,6 +239,75 @@ Description:
last zone of the device which may be smaller.
+What: /sys/block/<disk>/queue/crypto/
+Date: February 2022
+Contact: linux-block@vger.kernel.org
+Description:
+ The presence of this subdirectory of /sys/block/<disk>/queue/
+ indicates that the device supports inline encryption. This
+ subdirectory contains files which describe the inline encryption
+ capabilities of the device. For more information about inline
+ encryption, refer to Documentation/block/inline-encryption.rst.
+
+
+What: /sys/block/<disk>/queue/crypto/hw_wrapped_keys
+Date: February 2025
+Contact: linux-block@vger.kernel.org
+Description:
+ [RO] The presence of this file indicates that the device
+ supports hardware-wrapped inline encryption keys, i.e. key blobs
+ that can only be unwrapped and used by dedicated hardware. For
+ more information about hardware-wrapped inline encryption keys,
+ see Documentation/block/inline-encryption.rst.
+
+
+What: /sys/block/<disk>/queue/crypto/max_dun_bits
+Date: February 2022
+Contact: linux-block@vger.kernel.org
+Description:
+ [RO] This file shows the maximum length, in bits, of data unit
+ numbers accepted by the device in inline encryption requests.
+
+
+What: /sys/block/<disk>/queue/crypto/modes/<mode>
+Date: February 2022
+Contact: linux-block@vger.kernel.org
+Description:
+ [RO] For each crypto mode (i.e., encryption/decryption
+ algorithm) the device supports with inline encryption, a file
+ will exist at this location. It will contain a hexadecimal
+ number that is a bitmask of the supported data unit sizes, in
+ bytes, for that crypto mode.
+
+ Currently, the crypto modes that may be supported are:
+
+ * AES-256-XTS
+ * AES-128-CBC-ESSIV
+ * Adiantum
+
+ For example, if a device supports AES-256-XTS inline encryption
+ with data unit sizes of 512 and 4096 bytes, the file
+ /sys/block/<disk>/queue/crypto/modes/AES-256-XTS will exist and
+ will contain "0x1200".
+
+
+What: /sys/block/<disk>/queue/crypto/num_keyslots
+Date: February 2022
+Contact: linux-block@vger.kernel.org
+Description:
+ [RO] This file shows the number of keyslots the device has for
+ use with inline encryption.
+
+
+What: /sys/block/<disk>/queue/crypto/raw_keys
+Date: February 2025
+Contact: linux-block@vger.kernel.org
+Description:
+ [RO] The presence of this file indicates that the device
+ supports raw inline encryption keys, i.e. keys that are managed
+ in raw, plaintext form in software.
+
+
What: /sys/block/<disk>/queue/dax
Date: June 2016
Contact: linux-block@vger.kernel.org
@@ -211,6 +364,15 @@ Description:
for discards, and don't read this file.
+What: /sys/block/<disk>/queue/dma_alignment
+Date: May 2022
+Contact: linux-block@vger.kernel.org
+Description:
+ Reports the alignment that user space addresses must have to be
+ used for raw block device access with O_DIRECT and other driver
+ specific passthrough mechanisms.
+
+
What: /sys/block/<disk>/queue/fua
Date: May 2018
Contact: linux-block@vger.kernel.org
@@ -237,7 +399,7 @@ Description:
capable of executing requests targeting different sector ranges
in parallel. For instance, single LUN multi-actuator hard-disks
will have an independent_access_ranges directory if the device
- correctly advertizes the sector ranges of its actuators.
+ correctly advertises the sector ranges of its actuators.
The independent_access_ranges directory contains one directory
per access range, with each range described using the sector
@@ -278,18 +440,11 @@ What: /sys/block/<disk>/queue/io_poll_delay
Date: November 2016
Contact: linux-block@vger.kernel.org
Description:
- [RW] If polling is enabled, this controls what kind of polling
- will be performed. It defaults to -1, which is classic polling.
+ [RW] This was used to control what kind of polling will be
+ performed. It is now fixed to -1, which is classic polling.
In this mode, the CPU will repeatedly ask for completions
- without giving up any time. If set to 0, a hybrid polling mode
- is used, where the kernel will attempt to make an educated guess
- at when the IO will complete. Based on this guess, the kernel
- will put the process issuing IO to sleep for an amount of time,
- before entering a classic poll loop. This mode might be a little
- slower than pure classic polling, but it will be more efficient.
- If set to a value larger than 0, the kernel will put the process
- issuing IO to sleep for this amount of microseconds before
- entering classic polling.
+ without giving up any time.
+ <deprecated>
What: /sys/block/<disk>/queue/io_timeout
@@ -310,6 +465,13 @@ Description:
[RW] This file is used to control (on/off) the iostats
accounting of the disk.
+What: /sys/block/<disk>/queue/iostats_passthrough
+Date: October 2024
+Contact: linux-block@vger.kernel.org
+Description:
+ [RW] This file is used to control (on/off) the iostats
+ accounting of the disk for passthrough commands.
+
What: /sys/block/<disk>/queue/logical_block_size
Date: May 2009
@@ -374,7 +536,8 @@ Contact: linux-block@vger.kernel.org
Description:
[RW] This is the maximum number of kilobytes that the block
layer will allow for a filesystem request. Must be smaller than
- or equal to the maximum size allowed by the hardware.
+ or equal to the maximum size allowed by the hardware. Write 0
+ to use default kernel settings.
What: /sys/block/<disk>/queue/max_segment_size
@@ -384,6 +547,21 @@ Description:
[RO] Maximum size in bytes of a single element in a DMA
scatter/gather list.
+What: /sys/block/<disk>/queue/max_write_streams
+Date: November 2024
+Contact: linux-block@vger.kernel.org
+Description:
+ [RO] Maximum number of write streams supported, 0 if not
+ supported. If supported, valid values are 1 through
+ max_write_streams, inclusive.
+
+What: /sys/block/<disk>/queue/write_stream_granularity
+Date: November 2024
+Contact: linux-block@vger.kernel.org
+Description:
+ [RO] Granularity of a write stream in bytes. The granularity
+ of a write stream is the size that should be discarded or
+ overwritten together to avoid write amplification in the device.
What: /sys/block/<disk>/queue/max_segments
Date: March 2010
@@ -425,16 +603,10 @@ Date: July 2003
Contact: linux-block@vger.kernel.org
Description:
[RW] This controls how many requests may be allocated in the
- block layer for read or write requests. Note that the total
- allocated number may be twice this amount, since it applies only
- to reads or writes (not the accumulated sum).
-
- To avoid priority inversion through request starvation, a
- request queue maintains a separate request pool per each cgroup
- when CONFIG_BLK_CGROUP is enabled, and this parameter applies to
- each such per-block-cgroup request pool. IOW, if there are N
- block cgroups, each request queue may have up to N request
- pools, each independently regulated by nr_requests.
+ block layer. Noted this value only represents the quantity for a
+ single blk_mq_tags instance. The actual number for the entire
+ device depends on the hardware queue count, whether elevator is
+ enabled, and whether tags are shared.
What: /sys/block/<disk>/queue/nr_zones
@@ -479,6 +651,9 @@ Description:
[RW] Maximum number of kilobytes to read-ahead for filesystems
on this block device.
+ For MADV_HUGEPAGE, the readahead size may exceed this setting
+ since its granularity is based on the hugepage size.
+
What: /sys/block/<disk>/queue/rotational
Date: January 2009
@@ -532,18 +707,6 @@ Description:
the data. If no such restriction exists, this file will contain
'0'. This file is writable for testing purposes.
-
-What: /sys/block/<disk>/queue/throttle_sample_time
-Date: March 2017
-Contact: linux-block@vger.kernel.org
-Description:
- [RW] This is the time window that blk-throttle samples data, in
- millisecond. blk-throttle makes decision based on the
- samplings. Lower time means cgroups have more smooth throughput,
- but higher CPU overhead. This exists only when
- CONFIG_BLK_DEV_THROTTLING_LOW is enabled.
-
-
What: /sys/block/<disk>/queue/virt_boundary_mask
Date: April 2021
Contact: linux-block@vger.kernel.org
@@ -562,7 +725,7 @@ Contact: linux-block@vger.kernel.org
Description:
[RW] If the device is registered for writeback throttling, then
this file shows the target minimum read latency. If this latency
- is exceeded in a given window of time (see wb_window_usec), then
+ is exceeded in a given window of time (see curr_win_nsec), then
the writeback throttling will start scaling back writes. Writing
a value of '0' to this file disables the feature. Writing a
value of '-1' to this file resets the value to the default
@@ -609,6 +772,39 @@ Description:
0, write zeroes is not supported by the device.
+What: /sys/block/<disk>/queue/write_zeroes_unmap_max_hw_bytes
+Date: January 2025
+Contact: Zhang Yi <yi.zhang@huawei.com>
+Description:
+ [RO] This file indicates whether a device supports zeroing data
+ in a specified block range without incurring the cost of
+ physically writing zeroes to the media for each individual
+ block. If this parameter is set to write_zeroes_max_bytes, the
+ device implements a zeroing operation which opportunistically
+ avoids writing zeroes to media while still guaranteeing that
+ subsequent reads from the specified block range will return
+ zeroed data. This operation is a best-effort optimization, a
+ device may fall back to physically writing zeroes to the media
+ due to other factors such as misalignment or being asked to
+ clear a block range smaller than the device's internal
+ allocation unit. If this parameter is set to 0, the device may
+ have to write each logical block media during a zeroing
+ operation.
+
+
+What: /sys/block/<disk>/queue/write_zeroes_unmap_max_bytes
+Date: January 2025
+Contact: Zhang Yi <yi.zhang@huawei.com>
+Description:
+ [RW] While write_zeroes_unmap_max_hw_bytes is the hardware limit
+ for the device, this setting is the software limit. Since the
+ unmap write zeroes operation is a best-effort optimization, some
+ devices may still physically writing zeroes to media. So the
+ speed of this operation is not guaranteed. Writing a value of
+ '0' to this file disables this operation. Otherwise, this
+ parameter should be equal to write_zeroes_unmap_max_hw_bytes.
+
+
What: /sys/block/<disk>/queue/zone_append_max_bytes
Date: May 2020
Contact: linux-block@vger.kernel.org
@@ -646,6 +842,15 @@ Description:
zoned will report "none".
+What: /sys/block/<disk>/hidden
+Date: March 2023
+Contact: linux-block@vger.kernel.org
+Description:
+ [RO] the block device is hidden. it doesn’t produce events, and
+ can’t be opened from userspace or using blkdev_get*.
+ Used for the underlying components of multipath devices.
+
+
What: /sys/block/<disk>/stat
Date: February 2008
Contact: Jerome Marchand <jmarchan@redhat.com>
diff --git a/Documentation/ABI/stable/sysfs-bus-mhi b/Documentation/ABI/stable/sysfs-bus-mhi
index ecfe7662f8d0..8b9698fa0beb 100644
--- a/Documentation/ABI/stable/sysfs-bus-mhi
+++ b/Documentation/ABI/stable/sysfs-bus-mhi
@@ -1,7 +1,7 @@
What: /sys/bus/mhi/devices/.../serialnumber
Date: Sept 2020
KernelVersion: 5.10
-Contact: Bhaumik Bhatt <bbhatt@codeaurora.org>
+Contact: mhi@lists.linux.dev
Description: The file holds the serial number of the client device obtained
using a BHI (Boot Host Interface) register read after at least
one attempt to power up the device has been done. If read
@@ -12,10 +12,33 @@ Users: Any userspace application or clients interested in device info.
What: /sys/bus/mhi/devices/.../oem_pk_hash
Date: Sept 2020
KernelVersion: 5.10
-Contact: Bhaumik Bhatt <bbhatt@codeaurora.org>
+Contact: mhi@lists.linux.dev
Description: The file holds the OEM PK Hash value of the endpoint device
obtained using a BHI (Boot Host Interface) register read after
at least one attempt to power up the device has been done. If
read without having the device power on at least once, the file
will read all 0's.
Users: Any userspace application or clients interested in device info.
+
+What: /sys/bus/mhi/devices/.../soc_reset
+Date: April 2022
+KernelVersion: 5.19
+Contact: mhi@lists.linux.dev
+Description: Initiates a SoC reset on the MHI controller. A SoC reset is
+ a reset of last resort, and will require a complete re-init.
+ This can be useful as a method of recovery if the device is
+ non-responsive, or as a means of loading new firmware as a
+ system administration task.
+
+What: /sys/bus/mhi/devices/.../trigger_edl
+Date: April 2024
+KernelVersion: 6.10
+Contact: mhi@lists.linux.dev
+Description: Writing a non-zero value to this file will force devices to
+ enter EDL (Emergency Download) mode. This entry only exists for
+ devices capable of entering the EDL mode using the standard EDL
+ triggering mechanism defined in the MHI spec v1.2. Once in EDL
+ mode, the flash programmer image can be downloaded to the
+ device to enter the flash programmer execution environment.
+ This can be useful if user wants to use QDL (Qualcomm Download,
+ which is used to download firmware over EDL) to update firmware.
diff --git a/Documentation/ABI/stable/sysfs-bus-nvmem b/Documentation/ABI/stable/sysfs-bus-nvmem
index c399323f37de..0ae8cb074acf 100644
--- a/Documentation/ABI/stable/sysfs-bus-nvmem
+++ b/Documentation/ABI/stable/sysfs-bus-nvmem
@@ -1,6 +1,23 @@
+What: /sys/bus/nvmem/devices/.../force_ro
+Date: June 2024
+KernelVersion: 6.11
+Contact: Marek Vasut <marex@denx.de>
+Description:
+ This read/write attribute allows users to set read-write
+ devices as read-only and back to read-write from userspace.
+ This can be used to unlock and relock write-protection of
+ devices which are generally locked, except during sporadic
+ programming operation.
+ Read returns '0' or '1' for read-write or read-only modes
+ respectively.
+ Write parses one of 'YyTt1NnFf0', or [oO][NnFf] for "on"
+ and "off", i.e. what kstrtobool() supports.
+ Note: This file is only present if CONFIG_NVMEM_SYSFS
+ is enabled.
+
What: /sys/bus/nvmem/devices/.../nvmem
Date: July 2015
-KernelVersion: 4.2
+KernelVersion: 4.2
Contact: Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
Description:
This file allows user to read/write the raw NVMEM contents.
@@ -20,3 +37,14 @@ Description:
...
*
0001000
+
+What: /sys/bus/nvmem/devices/.../type
+Date: November 2018
+KernelVersion: 5.0
+Contact: Alexandre Belloni <alexandre.belloni@bootlin.com>
+Description:
+ This read-only attribute allows user to read the NVMEM
+ device type. Supported types are "Unknown", "EEPROM",
+ "OTP", "Battery backed", "FRAM".
+ Note: This file is only present if CONFIG_NVMEM_SYSFS
+ is enabled.
diff --git a/Documentation/ABI/stable/sysfs-class-backlight b/Documentation/ABI/stable/sysfs-class-backlight
index 023fb52645f8..40b8c46b95b2 100644
--- a/Documentation/ABI/stable/sysfs-class-backlight
+++ b/Documentation/ABI/stable/sysfs-class-backlight
@@ -3,10 +3,11 @@ Date: April 2005
KernelVersion: 2.6.12
Contact: Richard Purdie <rpurdie@rpsys.net>
Description:
- Control BACKLIGHT power, values are FB_BLANK_* from fb.h
+ Control BACKLIGHT power, values are compatible with
+ FB_BLANK_* from fb.h
- - FB_BLANK_UNBLANK (0) : power on.
- - FB_BLANK_POWERDOWN (4) : power off
+ - 0 (FB_BLANK_UNBLANK) : power on.
+ - 4 (FB_BLANK_POWERDOWN) : power off
Users: HAL
What: /sys/class/backlight/<backlight>/brightness
@@ -25,7 +26,12 @@ Date: March 2006
KernelVersion: 2.6.17
Contact: Richard Purdie <rpurdie@rpsys.net>
Description:
- Show the actual brightness by querying the hardware.
+ Show the actual brightness by querying the hardware. Due
+ to implementation differences in hardware this may not
+ match the value in 'brightness'. For example some hardware
+ may treat blanking differently or have custom power saving
+ features. Userspace should generally use the values in
+ 'brightness' to make decisions.
Users: HAL
What: /sys/class/backlight/<backlight>/max_brightness
diff --git a/Documentation/ABI/stable/sysfs-class-bluetooth b/Documentation/ABI/stable/sysfs-class-bluetooth
new file mode 100644
index 000000000000..36be02471174
--- /dev/null
+++ b/Documentation/ABI/stable/sysfs-class-bluetooth
@@ -0,0 +1,9 @@
+What: /sys/class/bluetooth/hci<index>/reset
+Date: 14-Jan-2025
+KernelVersion: 6.13
+Contact: linux-bluetooth@vger.kernel.org
+Description: This write-only attribute allows users to trigger the vendor reset
+ method on the Bluetooth device when arbitrary data is written.
+ The reset may or may not be done through the device transport
+ (e.g., UART/USB), and can also be done through an out-of-band
+ approach such as GPIO.
diff --git a/Documentation/ABI/stable/sysfs-class-infiniband b/Documentation/ABI/stable/sysfs-class-infiniband
index ebf08c604336..694f23a03a28 100644
--- a/Documentation/ABI/stable/sysfs-class-infiniband
+++ b/Documentation/ABI/stable/sysfs-class-infiniband
@@ -356,7 +356,7 @@ Description:
pkeys/<n>: (RO) Displays the contents of the physical
key table n = 0..126
- mcgs/: (RO) Muticast group table
+ mcgs/: (RO) Multicast group table
<m>/gid_idx/0: (RO) Display the GID mapping m = 1..2
diff --git a/Documentation/ABI/stable/sysfs-class-rfkill b/Documentation/ABI/stable/sysfs-class-rfkill
index 037979f7dc4b..67b605e3dd16 100644
--- a/Documentation/ABI/stable/sysfs-class-rfkill
+++ b/Documentation/ABI/stable/sysfs-class-rfkill
@@ -16,7 +16,7 @@ Description: The rfkill class subsystem folder.
What: /sys/class/rfkill/rfkill[0-9]+/name
Date: 09-Jul-2007
-KernelVersion v2.6.22
+KernelVersion: v2.6.22
Contact: linux-wireless@vger.kernel.org
Description: Name assigned by driver to this key (interface or driver name).
Values: arbitrary string.
@@ -24,7 +24,7 @@ Values: arbitrary string.
What: /sys/class/rfkill/rfkill[0-9]+/type
Date: 09-Jul-2007
-KernelVersion v2.6.22
+KernelVersion: v2.6.22
Contact: linux-wireless@vger.kernel.org
Description: Driver type string ("wlan", "bluetooth", etc).
Values: See include/linux/rfkill.h.
@@ -32,7 +32,7 @@ Values: See include/linux/rfkill.h.
What: /sys/class/rfkill/rfkill[0-9]+/persistent
Date: 09-Jul-2007
-KernelVersion v2.6.22
+KernelVersion: v2.6.22
Contact: linux-wireless@vger.kernel.org
Description: Whether the soft blocked state is initialised from non-volatile
storage at startup.
@@ -44,7 +44,7 @@ Values: A numeric value:
What: /sys/class/rfkill/rfkill[0-9]+/state
Date: 09-Jul-2007
-KernelVersion v2.6.22
+KernelVersion: v2.6.22
Contact: linux-wireless@vger.kernel.org
Description: Current state of the transmitter.
This file was scheduled to be removed in 2014, but due to its
@@ -67,7 +67,7 @@ Values: A numeric value.
What: /sys/class/rfkill/rfkill[0-9]+/hard
Date: 12-March-2010
-KernelVersion v2.6.34
+KernelVersion: v2.6.34
Contact: linux-wireless@vger.kernel.org
Description: Current hardblock state. This file is read only.
Values: A numeric value.
@@ -81,7 +81,7 @@ Values: A numeric value.
What: /sys/class/rfkill/rfkill[0-9]+/soft
Date: 12-March-2010
-KernelVersion v2.6.34
+KernelVersion: v2.6.34
Contact: linux-wireless@vger.kernel.org
Description: Current softblock state. This file is read and write.
Values: A numeric value.
diff --git a/Documentation/ABI/stable/sysfs-devices-node b/Documentation/ABI/stable/sysfs-devices-node
index 8db67aa472f1..2d0e023f22a7 100644
--- a/Documentation/ABI/stable/sysfs-devices-node
+++ b/Documentation/ABI/stable/sysfs-devices-node
@@ -177,8 +177,62 @@ Description:
The cache write policy: 0 for write-back, 1 for write-through,
other or unknown.
+What: /sys/devices/system/node/nodeX/memory_side_cache/indexY/address_mode
+Date: March 2025
+Contact: Dave Jiang <dave.jiang@intel.com>
+Description:
+ The address mode: 0 for reserved, 1 for extended-linear.
+
What: /sys/devices/system/node/nodeX/x86/sgx_total_bytes
Date: November 2021
Contact: Jarkko Sakkinen <jarkko@kernel.org>
Description:
The total amount of SGX physical memory in bytes.
+
+What: /sys/devices/system/node/nodeX/memory_failure/total
+Date: January 2023
+Contact: Jiaqi Yan <jiaqiyan@google.com>
+Description:
+ The total number of raw poisoned pages (pages containing
+ corrupted data due to memory errors) on a NUMA node.
+
+What: /sys/devices/system/node/nodeX/memory_failure/ignored
+Date: January 2023
+Contact: Jiaqi Yan <jiaqiyan@google.com>
+Description:
+ Of the raw poisoned pages on a NUMA node, how many pages are
+ ignored by memory error recovery attempt, usually because
+ support for this type of pages is unavailable, and kernel
+ gives up the recovery.
+
+What: /sys/devices/system/node/nodeX/memory_failure/failed
+Date: January 2023
+Contact: Jiaqi Yan <jiaqiyan@google.com>
+Description:
+ Of the raw poisoned pages on a NUMA node, how many pages are
+ failed by memory error recovery attempt. This usually means
+ a key recovery operation failed.
+
+What: /sys/devices/system/node/nodeX/memory_failure/delayed
+Date: January 2023
+Contact: Jiaqi Yan <jiaqiyan@google.com>
+Description:
+ Of the raw poisoned pages on a NUMA node, how many pages are
+ delayed by memory error recovery attempt. Delayed poisoned
+ pages usually will be retried by kernel.
+
+What: /sys/devices/system/node/nodeX/memory_failure/recovered
+Date: January 2023
+Contact: Jiaqi Yan <jiaqiyan@google.com>
+Description:
+ Of the raw poisoned pages on a NUMA node, how many pages are
+ recovered by memory error recovery attempt.
+
+What: /sys/devices/system/node/nodeX/reclaim
+Date: June 2025
+Contact: Linux Memory Management list <linux-mm@kvack.org>
+Description:
+ Perform user-triggered proactive reclaim on a NUMA node.
+ This interface is equivalent to the memcg variant.
+
+ See Documentation/admin-guide/cgroup-v2.rst
diff --git a/Documentation/ABI/stable/sysfs-devices-system-cpu b/Documentation/ABI/stable/sysfs-devices-system-cpu
index 3965ce504484..cf78bd99f6c8 100644
--- a/Documentation/ABI/stable/sysfs-devices-system-cpu
+++ b/Documentation/ABI/stable/sysfs-devices-system-cpu
@@ -24,12 +24,6 @@ Description: Default value for the Data Stream Control Register (DSCR) on
If set by a process it will be inherited by child processes.
Values: 64 bit unsigned integer (bit field)
-What: /sys/devices/system/cpu/cpuX/topology/physical_package_id
-Description: physical package id of cpuX. Typically corresponds to a physical
- socket number, but the actual value is architecture and platform
- dependent.
-Values: integer
-
What: /sys/devices/system/cpu/cpuX/topology/die_id
Description: the CPU die ID of cpuX. Typically it is the hardware platform's
identifier (rather than the kernel's). The actual value is
diff --git a/Documentation/ABI/stable/sysfs-driver-dma-idxd b/Documentation/ABI/stable/sysfs-driver-dma-idxd
index 0c2b613f2373..4a355e6747ae 100644
--- a/Documentation/ABI/stable/sysfs-driver-dma-idxd
+++ b/Documentation/ABI/stable/sysfs-driver-dma-idxd
@@ -22,6 +22,7 @@ Date: Oct 25, 2019
KernelVersion: 5.6.0
Contact: dmaengine@vger.kernel.org
Description: The largest number of work descriptors in a batch.
+ It's not visible when the device does not support batch.
What: /sys/bus/dsa/devices/dsa<m>/max_work_queues_size
Date: Oct 25, 2019
@@ -49,6 +50,8 @@ Description: The total number of read buffers supported by this device.
The read buffers represent resources within the DSA
implementation, and these resources are allocated by engines to
support operations. See DSA spec v1.2 9.2.4 Total Read Buffers.
+ It's not visible when the device does not support Read Buffer
+ allocation control.
What: /sys/bus/dsa/devices/dsa<m>/max_transfer_size
Date: Oct 25, 2019
@@ -81,7 +84,7 @@ What: /sys/bus/dsa/devices/dsa<m>/pasid_enabled
Date: Oct 27, 2020
KernelVersion: 5.11.0
Contact: dmaengine@vger.kernel.org
-Description: To indicate if PASID (process address space identifier) is
+Description: To indicate if user PASID (process address space identifier) is
enabled or not for this device.
What: /sys/bus/dsa/devices/dsa<m>/state
@@ -122,6 +125,8 @@ Contact: dmaengine@vger.kernel.org
Description: The maximum number of read buffers that may be in use at
one time by operations that access low bandwidth memory in the
device. See DSA spec v1.2 9.2.8 GENCFG on Global Read Buffer Limit.
+ It's not visible when the device does not support Read Buffer
+ allocation control.
What: /sys/bus/dsa/devices/dsa<m>/cmd_status
Date: Aug 28, 2020
@@ -131,6 +136,22 @@ Description: The last executed device administrative command's status/error.
Also last configuration error overloaded.
Writing to it will clear the status.
+What: /sys/bus/dsa/devices/dsa<m>/iaa_cap
+Date: Sept 14, 2022
+KernelVersion: 6.0.0
+Contact: dmaengine@vger.kernel.org
+Description: IAA (IAX) capability mask. Exported to user space for application
+ consumption. This attribute should only be visible on IAA devices
+ that are version 2 or later.
+
+What: /sys/bus/dsa/devices/dsa<m>/event_log_size
+Date: Sept 14, 2022
+KernelVersion: 6.4.0
+Contact: dmaengine@vger.kernel.org
+Description: The event log size to be configured. Default is 64 entries and
+ occupies 4k size if the evl entry is 64 bytes. It's visible
+ only on platforms that support the capability.
+
What: /sys/bus/dsa/devices/wq<m>.<n>/block_on_fault
Date: Oct 27, 2020
KernelVersion: 5.11.0
@@ -205,6 +226,7 @@ KernelVersion: 5.10.0
Contact: dmaengine@vger.kernel.org
Description: The max batch size for this workqueue. Cannot exceed device
max batch size. Configurable parameter.
+ It's not visible when the device does not support batch.
What: /sys/bus/dsa/devices/wq<m>.<n>/ats_disable
Date: Nov 13, 2020
@@ -213,20 +235,47 @@ Contact: dmaengine@vger.kernel.org
Description: Indicate whether ATS disable is turned on for the workqueue.
0 indicates ATS is on, and 1 indicates ATS is off for the workqueue.
+What: /sys/bus/dsa/devices/wq<m>.<n>/prs_disable
+Date: Sept 14, 2022
+KernelVersion: 6.4.0
+Contact: dmaengine@vger.kernel.org
+Description: Controls whether PRS disable is turned on for the workqueue.
+ 0 indicates PRS is on, and 1 indicates PRS is off for the
+ workqueue. This option overrides block_on_fault attribute
+ if set. It's visible only on platforms that support the
+ capability.
+
What: /sys/bus/dsa/devices/wq<m>.<n>/occupancy
-Date May 25, 2021
+Date: May 25, 2021
KernelVersion: 5.14.0
Contact: dmaengine@vger.kernel.org
Description: Show the current number of entries in this WQ if WQ Occupancy
Support bit WQ capabilities is 1.
What: /sys/bus/dsa/devices/wq<m>.<n>/enqcmds_retries
-Date Oct 29, 2021
+Date: Oct 29, 2021
KernelVersion: 5.17.0
Contact: dmaengine@vger.kernel.org
Description: Indicate the number of retires for an enqcmds submission on a sharedwq.
A max value to set attribute is capped at 64.
+What: /sys/bus/dsa/devices/wq<m>.<n>/op_config
+Date: Sept 14, 2022
+KernelVersion: 6.0.0
+Contact: dmaengine@vger.kernel.org
+Description: Shows the operation capability bits displayed in bitmap format
+ presented by %*pb printk() output format specifier.
+ The attribute can be configured when the WQ is disabled in
+ order to configure the WQ to accept specific bits that
+ correlates to the operations allowed. It's visible only
+ on platforms that support the capability.
+
+What: /sys/bus/dsa/devices/wq<m>.<n>/driver_name
+Date: Sept 8, 2023
+KernelVersion: 6.7.0
+Contact: dmaengine@vger.kernel.org
+Description: Name of driver to be bounded to the wq.
+
What: /sys/bus/dsa/devices/engine<m>.<n>/group_id
Date: Oct 25, 2019
KernelVersion: 5.6.0
@@ -239,6 +288,8 @@ KernelVersion: 5.17.0
Contact: dmaengine@vger.kernel.org
Description: Enable the use of global read buffer limit for the group. See DSA
spec v1.2 9.2.18 GRPCFG Use Global Read Buffer Limit.
+ It's not visible when the device does not support Read Buffer
+ allocation control.
What: /sys/bus/dsa/devices/group<m>.<n>/read_buffers_allowed
Date: Dec 10, 2021
@@ -247,6 +298,8 @@ Contact: dmaengine@vger.kernel.org
Description: Indicates max number of read buffers that may be in use at one time
by all engines in the group. See DSA spec v1.2 9.2.18 GRPCFG Read
Buffers Allowed.
+ It's not visible when the device does not support Read Buffer
+ allocation control.
What: /sys/bus/dsa/devices/group<m>.<n>/read_buffers_reserved
Date: Dec 10, 2021
@@ -255,3 +308,54 @@ Contact: dmaengine@vger.kernel.org
Description: Indicates the number of Read Buffers reserved for the use of
engines in the group. See DSA spec v1.2 9.2.18 GRPCFG Read Buffers
Reserved.
+ It's not visible when the device does not support Read Buffer
+ allocation control.
+
+What: /sys/bus/dsa/devices/group<m>.<n>/desc_progress_limit
+Date: Sept 14, 2022
+KernelVersion: 6.0.0
+Contact: dmaengine@vger.kernel.org
+Description: Allows control of the number of work descriptors that can be
+ concurrently processed by an engine in the group as a fraction
+ of the Maximum Work Descriptors in Progress value specified in
+ the ENGCAP register. The acceptable values are 0 (default),
+ 1 (1/2 of max value), 2 (1/4 of the max value), and 3 (1/8 of
+ the max value). It's visible only on platforms that support
+ the capability.
+
+What: /sys/bus/dsa/devices/group<m>.<n>/batch_progress_limit
+Date: Sept 14, 2022
+KernelVersion: 6.0.0
+Contact: dmaengine@vger.kernel.org
+Description: Allows control of the number of batch descriptors that can be
+ concurrently processed by an engine in the group as a fraction
+ of the Maximum Batch Descriptors in Progress value specified in
+ the ENGCAP register. The acceptable values are 0 (default),
+ 1 (1/2 of max value), 2 (1/4 of the max value), and 3 (1/8 of
+ the max value). It's visible only on platforms that support
+ the capability.
+
+What: /sys/bus/dsa/devices/wq<m>.<n>/dsa<x>\!wq<m>.<n>/file<y>/cr_faults
+Date: Sept 14, 2022
+KernelVersion: 6.4.0
+Contact: dmaengine@vger.kernel.org
+Description: Show the number of Completion Record (CR) faults this application
+ has caused.
+
+What: /sys/bus/dsa/devices/wq<m>.<n>/dsa<x>\!wq<m>.<n>/file<y>/cr_fault_failures
+Date: Sept 14, 2022
+KernelVersion: 6.4.0
+Contact: dmaengine@vger.kernel.org
+Description: Show the number of Completion Record (CR) faults failures that this
+ application has caused. The failure counter is incremented when the
+ driver cannot fault in the address for the CR. Typically this is caused
+ by a bad address programmed in the submitted descriptor or a malicious
+ submitter is using bad CR address on purpose.
+
+What: /sys/bus/dsa/devices/wq<m>.<n>/dsa<x>\!wq<m>.<n>/file<y>/pid
+Date: Sept 14, 2022
+KernelVersion: 6.4.0
+Contact: dmaengine@vger.kernel.org
+Description: Show the process id of the application that opened the file. This is
+ helpful information for a monitor daemon that wants to kill the
+ application that opened the file.
diff --git a/Documentation/ABI/stable/sysfs-driver-firmware-zynqmp b/Documentation/ABI/stable/sysfs-driver-firmware-zynqmp
index f5724bb5b462..c3fec3c835af 100644
--- a/Documentation/ABI/stable/sysfs-driver-firmware-zynqmp
+++ b/Documentation/ABI/stable/sysfs-driver-firmware-zynqmp
@@ -113,3 +113,144 @@ Description:
# echo 0 > /sys/devices/platform/firmware\:zynqmp-firmware/health_status
Users: Xilinx
+
+What: /sys/devices/platform/firmware\:zynqmp-firmware/feature_config_id
+Date: Feb 2022
+KernelVersion: 5.18
+Contact: "Ronak Jain" <ronak.jain@xilinx.com>
+Description:
+ This sysfs interface allows user to configure features at
+ runtime. The user can enable or disable features running at
+ firmware as well as the user can configure the parameters of
+ the features at runtime. The supported features are over
+ temperature and external watchdog. Here, the external watchdog
+ is completely different than the /dev/watchdog as the external
+ watchdog is running on the firmware and it is used to monitor
+ the health of firmware not APU(Linux). Also, the external
+ watchdog is interfaced outside of the zynqmp soc.
+
+ The supported config ids are for the feature configuration is,
+ 1. PM_FEATURE_OVERTEMP_STATUS = 1, the user can enable or
+ disable the over temperature feature.
+ 2. PM_FEATURE_OVERTEMP_VALUE = 2, the user can configure the
+ over temperature limit in Degree Celsius.
+ 3. PM_FEATURE_EXTWDT_STATUS = 3, the user can enable or disable
+ the external watchdog feature.
+ 4. PM_FEATURE_EXTWDT_VALUE = 4, the user can configure the
+ external watchdog feature.
+
+ Usage:
+
+ Select over temperature config ID to enable/disable feature
+ # echo 1 > /sys/devices/platform/firmware\:zynqmp-firmware/feature_config_id
+
+ Check over temperature config ID is selected or not
+ # cat /sys/devices/platform/firmware\:zynqmp-firmware/feature_config_id
+ The expected result is 1.
+
+ Select over temperature config ID to configure OT limit
+ # echo 2 > /sys/devices/platform/firmware\:zynqmp-firmware/feature_config_id
+
+ Check over temperature config ID is selected or not
+ # cat /sys/devices/platform/firmware\:zynqmp-firmware/feature_config_id
+ The expected result is 2.
+
+ Select external watchdog config ID to enable/disable feature
+ # echo 3 > /sys/devices/platform/firmware\:zynqmp-firmware/feature_config_id
+
+ Check external watchdog config ID is selected or not
+ # cat /sys/devices/platform/firmware\:zynqmp-firmware/feature_config_id
+ The expected result is 3.
+
+ Select external watchdog config ID to configure time interval
+ # echo 4 > /sys/devices/platform/firmware\:zynqmp-firmware/feature_config_id
+
+ Check external watchdog config ID is selected or not
+ # cat /sys/devices/platform/firmware\:zynqmp-firmware/feature_config_id
+ The expected result is 4.
+
+Users: Xilinx
+
+What: /sys/devices/platform/firmware\:zynqmp-firmware/feature_config_value
+Date: Feb 2022
+KernelVersion: 5.18
+Contact: "Ronak Jain" <ronak.jain@xilinx.com>
+Description:
+ This sysfs interface allows to configure features at runtime.
+ The user can enable or disable features running at firmware.
+ Also, the user can configure the parameters of the features
+ at runtime. The supported features are over temperature and
+ external watchdog. Here, the external watchdog is completely
+ different than the /dev/watchdog as the external watchdog is
+ running on the firmware and it is used to monitor the health
+ of firmware not APU(Linux). Also, the external watchdog is
+ interfaced outside of the zynqmp soc.
+
+ By default the features are disabled in the firmware. The user
+ can enable features by querying appropriate config id of the
+ features.
+
+ The default limit for the over temperature is 90 Degree Celsius.
+ The default timer interval for the external watchdog is 570ms.
+
+ The supported config ids are for the feature configuration is,
+ 1. PM_FEATURE_OVERTEMP_STATUS = 1, the user can enable or
+ disable the over temperature feature.
+ 2. PM_FEATURE_OVERTEMP_VALUE = 2, the user can configure the
+ over temperature limit in Degree Celsius.
+ 3. PM_FEATURE_EXTWDT_STATUS = 3, the user can enable or disable
+ the external watchdog feature.
+ 4. PM_FEATURE_EXTWDT_VALUE = 4, the user can configure the
+ external watchdog feature.
+
+ Usage:
+
+ Enable over temperature feature
+ # echo 1 > /sys/devices/platform/firmware\:zynqmp-firmware/feature_config_id
+ # echo 1 > /sys/devices/platform/firmware\:zynqmp-firmware/feature_config_value
+
+ Check whether the over temperature feature is enabled or not
+ # cat /sys/devices/platform/firmware\:zynqmp-firmware/feature_config_value
+ The expected result is 1.
+
+ Disable over temperature feature
+ # echo 1 > /sys/devices/platform/firmware\:zynqmp-firmware/feature_config_id
+ # echo 0 > /sys/devices/platform/firmware\:zynqmp-firmware/feature_config_value
+
+ Check whether the over temperature feature is disabled or not
+ # cat /sys/devices/platform/firmware\:zynqmp-firmware/feature_config_value
+ The expected result is 0.
+
+ Configure over temperature limit to 50 Degree Celsius
+ # echo 2 > /sys/devices/platform/firmware\:zynqmp-firmware/feature_config_id
+ # echo 50 > /sys/devices/platform/firmware\:zynqmp-firmware/feature_config_value
+
+ Check whether the over temperature limit is configured or not
+ # cat /sys/devices/platform/firmware\:zynqmp-firmware/feature_config_value
+ The expected result is 50.
+
+ Enable external watchdog feature
+ # echo 3 > /sys/devices/platform/firmware\:zynqmp-firmware/feature_config_id
+ # echo 1 > /sys/devices/platform/firmware\:zynqmp-firmware/feature_config_value
+
+ Check whether the external watchdog feature is enabled or not
+ # cat /sys/devices/platform/firmware\:zynqmp-firmware/feature_config_value
+ The expected result is 1.
+
+ Disable external watchdog feature
+ # echo 3 > /sys/devices/platform/firmware\:zynqmp-firmware/feature_config_id
+ # echo 0 > /sys/devices/platform/firmware\:zynqmp-firmware/feature_config_value
+
+ Check whether the external watchdog feature is disabled or not
+ # cat /sys/devices/platform/firmware\:zynqmp-firmware/feature_config_value
+ The expected result is 0.
+
+ Configure external watchdog timer interval to 500ms
+ # echo 4 > /sys/devices/platform/firmware\:zynqmp-firmware/feature_config_id
+ # echo 500 > /sys/devices/platform/firmware\:zynqmp-firmware/feature_config_value
+
+ Check whether the external watchdog timer interval is configured or not
+ # cat /sys/devices/platform/firmware\:zynqmp-firmware/feature_config_value
+ The expected result is 500.
+
+Users: Xilinx
diff --git a/Documentation/ABI/stable/sysfs-driver-misc-cp500 b/Documentation/ABI/stable/sysfs-driver-misc-cp500
new file mode 100644
index 000000000000..525bd18a2db4
--- /dev/null
+++ b/Documentation/ABI/stable/sysfs-driver-misc-cp500
@@ -0,0 +1,25 @@
+What: /sys/devices/pciXXXX:XX/0000:XX:XX.X/0000:XX:XX.X/version
+Date: June 2024
+KernelVersion: 6.11
+Contact: Gerhard Engleder <eg@keba.com>
+Description: Version of the FPGA configuration bitstream as printable string.
+ This file is read only.
+Users: KEBA
+
+What: /sys/devices/pciXXXX:XX/0000:XX:XX.X/0000:XX:XX.X/keep_cfg
+Date: June 2024
+KernelVersion: 6.11
+Contact: Gerhard Engleder <eg@keba.com>
+Description: Flag which signals if FPGA shall keep or reload configuration
+ bitstream on reset. Normal FPGA behavior and default is to keep
+ configuration bitstream and to only reset the configured logic.
+
+ Reloading configuration on reset enables an update of the
+ configuration bitstream with a simple reboot. Otherwise it is
+ necessary to power cycle the device to reload the new
+ configuration bitstream.
+
+ This file is read/write. The values are as follows:
+ 1 = keep configuration bitstream on reset, default
+ 0 = reload configuration bitstream on reset
+Users: KEBA
diff --git a/Documentation/ABI/stable/sysfs-driver-mlxreg-io b/Documentation/ABI/stable/sysfs-driver-mlxreg-io
index 12c3f895cd2f..f59461111221 100644
--- a/Documentation/ABI/stable/sysfs-driver-mlxreg-io
+++ b/Documentation/ABI/stable/sysfs-driver-mlxreg-io
@@ -1,7 +1,7 @@
What: /sys/devices/platform/mlxplat/mlxreg-io/hwmon/hwmon*/asic_health
Date: June 2018
KernelVersion: 4.19
-Contact: Vadim Pasternak <vadimpmellanox.com>
+Contact: Vadim Pasternak <vadimp@nvidia.com>
Description: This file shows ASIC health status. The possible values are:
0 - health failed, 2 - health OK, 3 - ASIC in booting state.
@@ -11,7 +11,7 @@ What: /sys/devices/platform/mlxplat/mlxreg-io/hwmon/hwmon*/cpld1_version
What: /sys/devices/platform/mlxplat/mlxreg-io/hwmon/hwmon*/cpld2_version
Date: June 2018
KernelVersion: 4.19
-Contact: Vadim Pasternak <vadimpmellanox.com>
+Contact: Vadim Pasternak <vadimp@nvidia.com>
Description: These files show with which CPLD versions have been burned
on carrier and switch boards.
@@ -20,7 +20,7 @@ Description: These files show with which CPLD versions have been burned
What: /sys/devices/platform/mlxplat/mlxreg-io/hwmon/hwmon*/fan_dir
Date: December 2018
KernelVersion: 5.0
-Contact: Vadim Pasternak <vadimpmellanox.com>
+Contact: Vadim Pasternak <vadimp@nvidia.com>
Description: This file shows the system fans direction:
forward direction - relevant bit is set 0;
reversed direction - relevant bit is set 1.
@@ -30,7 +30,7 @@ Description: This file shows the system fans direction:
What: /sys/devices/platform/mlxplat/mlxreg-io/hwmon/hwmon*/cpld3_version
Date: November 2018
KernelVersion: 5.0
-Contact: Vadim Pasternak <vadimpmellanox.com>
+Contact: Vadim Pasternak <vadimp@nvidia.com>
Description: These files show with which CPLD versions have been burned
on LED or Gearbox board.
@@ -39,7 +39,7 @@ Description: These files show with which CPLD versions have been burned
What: /sys/devices/platform/mlxplat/mlxreg-io/hwmon/hwmon*/jtag_enable
Date: November 2018
KernelVersion: 5.0
-Contact: Vadim Pasternak <vadimpmellanox.com>
+Contact: Vadim Pasternak <vadimp@nvidia.com>
Description: These files enable and disable the access to the JTAG domain.
By default access to the JTAG domain is disabled.
@@ -48,7 +48,7 @@ Description: These files enable and disable the access to the JTAG domain.
What: /sys/devices/platform/mlxplat/mlxreg-io/hwmon/hwmon*/select_iio
Date: June 2018
KernelVersion: 4.19
-Contact: Vadim Pasternak <vadimpmellanox.com>
+Contact: Vadim Pasternak <vadimp@nvidia.com>
Description: This file allows iio devices selection.
Attribute select_iio can be written with 0 or with 1. It
@@ -62,7 +62,7 @@ What: /sys/devices/platform/mlxplat/mlxreg-io/hwmon/hwmon*/psu1_on
/sys/devices/platform/mlxplat/mlxreg-io/hwmon/hwmon*/pwr_down
Date: June 2018
KernelVersion: 4.19
-Contact: Vadim Pasternak <vadimpmellanox.com>
+Contact: Vadim Pasternak <vadimp@nvidia.com>
Description: These files allow asserting system power cycling, switching
power supply units on and off and system's main power domain
shutdown.
@@ -89,7 +89,7 @@ What: /sys/devices/platform/mlxplat/mlxreg-io/hwmon/hwmon*/reset_short_pb
What: /sys/devices/platform/mlxplat/mlxreg-io/hwmon/hwmon*/reset_sw_reset
Date: June 2018
KernelVersion: 4.19
-Contact: Vadim Pasternak <vadimpmellanox.com>
+Contact: Vadim Pasternak <vadimp@nvidia.com>
Description: These files show the system reset cause, as following: power
auxiliary outage or power refresh, ASIC thermal shutdown, halt,
hotswap, watchdog, firmware reset, long press power button,
@@ -106,7 +106,7 @@ What: /sys/devices/platform/mlxplat/mlxreg-io/hwmon/hwmon*/reset_system
What: /sys/devices/platform/mlxplat/mlxreg-io/hwmon/hwmon*/reset_voltmon_upgrade_fail
Date: November 2018
KernelVersion: 5.0
-Contact: Vadim Pasternak <vadimpmellanox.com>
+Contact: Vadim Pasternak <vadimp@nvidia.com>
Description: These files show the system reset cause, as following: ComEx
power fail, reset from ComEx, system platform reset, reset
due to voltage monitor devices upgrade failure,
@@ -119,7 +119,7 @@ Description: These files show the system reset cause, as following: ComEx
What: /sys/devices/platform/mlxplat/mlxreg-io/hwmon/hwmon*/cpld4_version
Date: November 2018
KernelVersion: 5.0
-Contact: Vadim Pasternak <vadimpmellanox.com>
+Contact: Vadim Pasternak <vadimp@nvidia.com>
Description: These files show with which CPLD versions have been burned
on LED board.
@@ -133,7 +133,7 @@ What: /sys/devices/platform/mlxplat/mlxreg-io/hwmon/hwmon*/reset_sff_wd
What: /sys/devices/platform/mlxplat/mlxreg-io/hwmon/hwmon*/reset_swb_wd
Date: June 2019
KernelVersion: 5.3
-Contact: Vadim Pasternak <vadimpmellanox.com>
+Contact: Vadim Pasternak <vadimp@nvidia.com>
Description: These files show the system reset cause, as following:
COMEX thermal shutdown; wathchdog power off or reset was derived
by one of the next components: COMEX, switch board or by Small Form
@@ -148,7 +148,7 @@ What: /sys/devices/platform/mlxplat/mlxreg-io/hwmon/hwmon*/config1
What: /sys/devices/platform/mlxplat/mlxreg-io/hwmon/hwmon*/config2
Date: January 2020
KernelVersion: 5.6
-Contact: Vadim Pasternak <vadimpmellanox.com>
+Contact: Vadim Pasternak <vadimp@nvidia.com>
Description: These files show system static topology identification
like system's static I2C topology, number and type of FPGA
devices within the system and so on.
@@ -161,7 +161,7 @@ What: /sys/devices/platform/mlxplat/mlxreg-io/hwmon/hwmon*/reset_soc
What: /sys/devices/platform/mlxplat/mlxreg-io/hwmon/hwmon*/reset_sw_pwr_off
Date: January 2020
KernelVersion: 5.6
-Contact: Vadim Pasternak <vadimpmellanox.com>
+Contact: Vadim Pasternak <vadimp@nvidia.com>
Description: These files show the system reset causes, as following: reset
due to AC power failure, reset invoked from software by
assertion reset signal through CPLD. reset caused by signal
@@ -173,7 +173,7 @@ Description: These files show the system reset causes, as following: reset
What: /sys/devices/platform/mlxplat/mlxreg-io/hwmon/hwmon*/pcie_asic_reset_dis
Date: January 2020
KernelVersion: 5.6
-Contact: Vadim Pasternak <vadimpmellanox.com>
+Contact: Vadim Pasternak <vadimp@nvidia.com>
Description: This file allows to retain ASIC up during PCIe root complex
reset, when attribute is set 1.
@@ -182,7 +182,7 @@ Description: This file allows to retain ASIC up during PCIe root complex
What: /sys/devices/platform/mlxplat/mlxreg-io/hwmon/hwmon*/vpd_wp
Date: January 2020
KernelVersion: 5.6
-Contact: Vadim Pasternak <vadimpmellanox.com>
+Contact: Vadim Pasternak <vadimp@nvidia.com>
Description: This file allows to overwrite system VPD hardware write
protection when attribute is set 1.
@@ -191,7 +191,7 @@ Description: This file allows to overwrite system VPD hardware write
What: /sys/devices/platform/mlxplat/mlxreg-io/hwmon/hwmon*/voltreg_update_status
Date: January 2020
KernelVersion: 5.6
-Contact: Vadim Pasternak <vadimpmellanox.com>
+Contact: Vadim Pasternak <vadimp@nvidia.com>
Description: This file exposes the configuration update status of burnable
voltage regulator devices. The status values are as following:
0 - OK; 1 - CRC failure; 2 = I2C failure; 3 - in progress.
@@ -201,7 +201,7 @@ Description: This file exposes the configuration update status of burnable
What: /sys/devices/platform/mlxplat/mlxreg-io/hwmon/hwmon*/ufm_version
Date: January 2020
KernelVersion: 5.6
-Contact: Vadim Pasternak <vadimpmellanox.com>
+Contact: Vadim Pasternak <vadimp@nvidia.com>
Description: This file exposes the firmware version of burnable voltage
regulator devices.
@@ -217,7 +217,7 @@ What: /sys/devices/platform/mlxplat/mlxreg-io/hwmon/hwmon*/cpld3_version_min
What: /sys/devices/platform/mlxplat/mlxreg-io/hwmon/hwmon*/cpld4_version_min
Date: July 2020
KernelVersion: 5.9
-Contact: Vadim Pasternak <vadimpmellanox.com>
+Contact: Vadim Pasternak <vadimp@nvidia.com>
Description: These files show with which CPLD part numbers and minor
versions have been burned CPLD devices equipped on a
system.
@@ -467,3 +467,349 @@ Description: These files provide the maximum powered required for line card
feeding and line card configuration Id.
The files are read only.
+
+What: /sys/devices/platform/mlxplat/mlxreg-io/hwmon/hwmon*/phy_reset
+Date: May 2022
+KernelVersion: 5.19
+Contact: Vadim Pasternak <vadimp@nvidia.com>
+Description: This file allows to reset PHY 88E1548 when attribute is set 0
+ due to some abnormal PHY behavior.
+ Expected behavior:
+ When phy_reset is written 1, all PHY 88E1548 are released
+ from the reset state, when 0 - are hold in reset state.
+
+ The files are read/write.
+
+What: /sys/devices/platform/mlxplat/mlxreg-io/hwmon/hwmon*/mac_reset
+Date: May 2022
+KernelVersion: 5.19
+Contact: Vadim Pasternak <vadimp@nvidia.com>
+Description: This file allows to reset ASIC MT52132 when attribute is set 0
+ due to some abnormal ASIC behavior.
+ Expected behavior:
+ When mac_reset is written 1, the ASIC MT52132 is released
+ from the reset state, when 0 - is hold in reset state.
+
+ The files are read/write.
+
+What: /sys/devices/platform/mlxplat/mlxreg-io/hwmon/hwmon*/qsfp_pwr_good
+Date: May 2022
+KernelVersion: 5.19
+Contact: Vadim Pasternak <vadimp@nvidia.com>
+Description: This file shows QSFP ports power status. The value is set to 0
+ when one of any QSFP ports is plugged. The value is set to 1 when
+ there are no any QSFP ports are plugged.
+ The possible values are:
+ 0 - Power good, 1 - Not power good.
+
+ The files are read only.
+
+What: /sys/devices/platform/mlxplat/mlxreg-io/hwmon/hwmon*/asic2_health
+Date: July 2022
+KernelVersion: 5.20
+Contact: Vadim Pasternak <vadimp@nvidia.com>
+Description: This file shows 2-nd ASIC health status. The possible values are:
+ 0 - health failed, 2 - health OK, 3 - ASIC in booting state.
+
+ The file is read only.
+
+What: /sys/devices/platform/mlxplat/mlxreg-io/hwmon/hwmon*/asic_reset
+What: /sys/devices/platform/mlxplat/mlxreg-io/hwmon/hwmon*/asic2_reset
+Date: July 2022
+KernelVersion: 5.20
+Contact: Vadim Pasternak <vadimp@nvidia.com>
+Description: These files allow to each of ASICs by writing 1.
+
+ The files are write only.
+
+What: /sys/devices/platform/mlxplat/mlxreg-io/hwmon/hwmon*/comm_chnl_ready
+Date: July 2022
+KernelVersion: 5.20
+Contact: Vadim Pasternak <vadimp@nvidia.com>
+Description: This file is used to indicate remote end (for example BMC) that system
+ host CPU is ready for sending telemetry data to remote end.
+ For indication the file should be written 1.
+
+ The file is write only.
+
+What: /sys/devices/platform/mlxplat/mlxreg-io/hwmon/hwmon*/config3
+Date: January 2020
+KernelVersion: 5.6
+Contact: Vadim Pasternak <vadimp@nvidia.com>
+Description: The file indicates COME module hardware configuration.
+ The value is pushed by hardware through GPIO pins.
+ The purpose is to expose some minor BOM changes for the same system SKU.
+
+ The file is read only.
+
+What: /sys/devices/platform/mlxplat/mlxreg-io/hwmon/hwmon*/reset_pwr_converter_fail
+Date: February 2023
+KernelVersion: 6.3
+Contact: Vadim Pasternak <vadimp@nvidia.com>
+Description: This file shows the system reset cause due to power converter
+ devices failure.
+ Value 1 in file means this is reset cause, 0 - otherwise.
+
+ The file is read only.
+
+What: /sys/devices/platform/mlxplat/mlxreg-io/hwmon/hwmon*/erot1_ap_reset
+What: /sys/devices/platform/mlxplat/mlxreg-io/hwmon/hwmon*/erot2_ap_reset
+Date: February 2023
+KernelVersion: 6.3
+Contact: Vadim Pasternak <vadimp@nvidia.com>
+Description: These files aim to monitor the status of the External Root of Trust (EROT)
+ processor's RESET output to the Application Processor (AP).
+ By reading this file, could be determined if the EROT has invalidated or
+ revoked AP Firmware, at which point it will hold the AP in RESET until a
+ valid firmware is loaded. This protects the AP from running an
+ unauthorized firmware. In the normal flow, the AP reset should be released
+ after the EROT validates the integrity of the FW, and it should be done so
+ as quickly as possible so that the AP boots before the CPU starts to
+ communicate to each ASIC.
+
+ The files are read only.
+
+What: /sys/devices/platform/mlxplat/mlxreg-io/hwmon/hwmon*/erot1_recovery
+What: /sys/devices/platform/mlxplat/mlxreg-io/hwmon/hwmon*/erot2_recovery
+What: /sys/devices/platform/mlxplat/mlxreg-io/hwmon/hwmon*/erot1_reset
+What: /sys/devices/platform/mlxplat/mlxreg-io/hwmon/hwmon*/erot2_reset
+Date: February 2023
+KernelVersion: 6.3
+Contact: Vadim Pasternak <vadimp@nvidia.com>
+Description: These files aim to perform External Root of Trust (EROT) recovery
+ sequence after EROT device failure.
+ These EROT devices protect ASICs from unauthorized access and in normal
+ flow their reset should be released with system power – earliest power
+ up stage, so that EROTs can begin boot and authentication process before
+ CPU starts to communicate to ASICs.
+ Issuing a reset to the EROT while asserting the recovery signal will cause
+ the EROT Application Processor to enter recovery mode so that the EROT FW
+ can be updated/recovered.
+ For reset/recovery the related file should be toggled by 1/0.
+
+ The files are read/write.
+
+What: /sys/devices/platform/mlxplat/mlxreg-io/hwmon/hwmon*/erot1_wp
+What: /sys/devices/platform/mlxplat/mlxreg-io/hwmon/hwmon*/erot2_wp
+Date: February 2023
+KernelVersion: 6.3
+Contact: Vadim Pasternak <vadimp@nvidia.com>
+Description: These files allow access to External Root of Trust (EROT) for reset
+ and recovery sequence after EROT device failure.
+ Default is 0 (programming disabled).
+ If the system is in locked-down mode writing this file will not be allowed.
+
+ The files are read/write.
+
+What: /sys/devices/platform/mlxplat/mlxreg-io/hwmon/hwmon*/spi_chnl_select
+Date: February 2023
+KernelVersion: 6.3
+Contact: Vadim Pasternak <vadimp@nvidia.com>
+Description: This file allows SPI chip selection for External Root of Trust (EROT)
+ device Out-of-Band recovery.
+ File can be written with 0 or with 1. It selects which EROT can be accessed
+ through SPI device.
+
+ The file is read/write.
+
+What: /sys/devices/platform/mlxplat/mlxreg-io/hwmon/hwmon*/asic_pg_fail
+Date: February 2023
+KernelVersion: 6.3
+Contact: Vadim Pasternak vadimp@nvidia.com
+Description: This file shows ASIC Power Good status.
+ Value 1 in file means ASIC Power Good failed, 0 - otherwise.
+
+ The file is read only.
+
+What: /sys/devices/platform/mlxplat/mlxreg-io/hwmon/hwmon*/clk_brd1_boot_fail
+What: /sys/devices/platform/mlxplat/mlxreg-io/hwmon/hwmon*/clk_brd2_boot_fail
+What: /sys/devices/platform/mlxplat/mlxreg-io/hwmon/hwmon*/clk_brd_fail
+Date: February 2023
+KernelVersion: 6.3
+Contact: Vadim Pasternak vadimp@nvidia.com
+Description: These files are related to clock boards status in system.
+ - clk_brd1_boot_fail: warning about 1-st clock board failed to boot from CI.
+ - clk_brd2_boot_fail: warning about 2-nd clock board failed to boot from CI.
+ - clk_brd_fail: error about common clock board boot failure.
+
+ The files are read only.
+
+What: /sys/devices/platform/mlxplat/mlxreg-io/hwmon/hwmon*/clk_brd_prog_en
+Date: February 2023
+KernelVersion: 6.3
+Contact: Vadim Pasternak <vadimp@nvidia.com>
+Description: This file enables programming of clock boards.
+ Default is 0 (programming disabled).
+ If the system is in locked-down mode writing this file will not be allowed.
+
+ The file is read/write.
+
+What: /sys/devices/platform/mlxplat/mlxreg-io/hwmon/hwmon*/pwr_converter_prog_en
+Date: February 2023
+KernelVersion: 6.3
+Contact: Vadim Pasternak <vadimp@nvidia.com>
+Description: This file enables programming of power converters.
+ Default is 0 (programming disabled).
+ If the system is in locked-down mode writing this file will not be allowed.
+
+ The file is read/write.
+
+What: /sys/devices/platform/mlxplat/mlxreg-io/hwmon/hwmon*/reset_ac_ok_fail
+Date: February 2023
+KernelVersion: 6.3
+Contact: Vadim Pasternak <vadimp@nvidia.com>
+Description: This file shows the system reset cause due to AC power failure.
+ Value 1 in file means this is reset cause, 0 - otherwise.
+
+ The file is read only.
+
+What: /sys/devices/platform/mlxplat/mlxreg-io/hwmon/hwmon*/cpld5_pn
+What: /sys/devices/platform/mlxplat/mlxreg-io/hwmon/hwmon*/cpld5_version
+What: /sys/devices/platform/mlxplat/mlxreg-io/hwmon/hwmon*/cpld5_version_min
+Date: August 2023
+KernelVersion: 6.6
+Contact: Vadim Pasternak <vadimp@nvidia.com>
+Description: These files show with which CPLD part numbers, version and minor
+ versions have been burned the 5-th CPLD device equipped on a
+ system.
+
+ The files are read only.
+
+What: /sys/devices/platform/mlxplat/mlxreg-io/hwmon/hwmon*/jtag_cap
+Date: August 2023
+KernelVersion: 6.6
+Contact: Vadim Pasternak <vadimp@nvidia.com>
+Description: This file indicates the available method of CPLD/FPGA devices
+ field update through the JTAG chain:
+
+ b00 - field update through LPC bus register memory space.
+ b01 - Reserved.
+ b10 - Reserved.
+ b11 - field update through CPU GPIOs bit-banging.
+
+ The file is read only.
+
+What: /sys/devices/platform/mlxplat/mlxreg-io/hwmon/hwmon*/lid_open
+Date: August 2023
+KernelVersion: 6.6
+Contact: Vadim Pasternak <vadimp@nvidia.com>
+Description: 1 - indicates that system lid is opened, otherwise 0.
+
+ The file is read only.
+
+What: /sys/devices/platform/mlxplat/mlxreg-io/hwmon/hwmon*/reset_long_pwr_pb
+Date: August 2023
+KernelVersion: 6.6
+Contact: Vadim Pasternak <vadimp@nvidia.com>
+Description: This file if set 1 indicates that system has been reset by
+ long press of power button.
+
+ The file is read only.
+
+What: /sys/devices/platform/mlxplat/mlxreg-io/hwmon/hwmon*/reset_swb_dc_dc_pwr_fail
+Date: August 2023
+KernelVersion: 6.6
+Contact: Vadim Pasternak <vadimp@nvidia.com>
+Description: This file shows 1 in case the system reset happened due to the
+ failure of any DC-DC power converter devices equipped on the
+ switch board.
+
+ The file is read only.
+
+What: /sys/devices/platform/mlxplat/mlxreg-io/hwmon/hwmon*/global_wp_request
+Date: May 2025
+KernelVersion: 6.16
+Contact: Vadim Pasternak <vadimp@nvidia.com>
+Description: This file when written 1 activates request to allow access to
+ the write protected flashes. Such request can be performed only
+ for system equipped with BMC (Board Management Controller),
+ which can grant access to protected flashes. In case BMC allows
+ access - it will respond with "global_wp_response". BMC decides
+ regarding time window of granted access. After granted window is
+ expired, BMC will change value back to 0.
+ Default value is 0.
+
+ The file is read/write.
+
+What: /sys/devices/platform/mlxplat/mlxreg-io/hwmon/hwmon*/global_wp_response
+Date: May 2025
+KernelVersion: 6.16
+Contact: Vadim Pasternak <vadimp@nvidia.com>
+Description: This file, when set 1, indicates that access to protected
+ flashes have been granted to host CPU by BMC.
+ Default value is 0.
+
+ The file is read only.
+
+What: /sys/devices/platform/mlxplat/mlxreg-io/hwmon/hwmon*/shutdown_unlock
+Date: May 2025
+KernelVersion: 6.16
+Contact: Vadim Pasternak <vadimp@nvidia.com>
+Description: When ASICs are getting overheated, system protection
+ hardware mechanism enforces system reboot. After system
+ reboot ASICs come up in locked state. To unlock ASICs,
+ this file should be written 1
+ Default value is 0.
+
+ The file is read/write.
+
+What: /sys/devices/platform/mlxplat/i2c_mlxcpld.*/i2c-*/i2c-*/*-00**/mlxreg-io.*/hwmon/hwmon*/boot_progress
+Date: May 2025
+KernelVersion: 6.16
+Contact: Vadim Pasternak <vadimp@nvidia.com>
+Description: These files show the Data Process Unit board boot progress
+ state. Valid states are:
+ - 4 : OS starting.
+ - 5 : OS running.
+ - 6 : Low-Power Standby.
+
+ The file is read only.
+
+What: /sys/devices/platform/mlxplat/i2c_mlxcpld.*/i2c-*/i2c-*/*-00**/mlxreg-io.*/hwmon/hwmon*/dpu_id
+Date: May 2025
+KernelVersion: 6.16
+Contact: Vadim Pasternak <vadimp@nvidia.com>
+Description: This file shows hardware Id of Data Process Unit board.
+
+ The file is read only.
+
+What: /sys/devices/platform/mlxplat/i2c_mlxcpld.*/i2c-*/i2c-*/*-00**/mlxreg-io.*/hwmon/hwmon*/reset_aux_pwr_or_reload
+What: /sys/devices/platform/mlxplat/i2c_mlxcpld.*/i2c-*/i2c-*/*-00**/mlxreg-io.*/hwmon/hwmon*/reset_dpu_thermal
+What: /sys/devices/platform/mlxplat/i2c_mlxcpld.*/i2c-*/i2c-*/*-00**/mlxreg-io.*/hwmon/hwmon*/reset_from_main_board
+Date: May 2025
+KernelVersion: 6.16
+Contact: Vadim Pasternak <vadimp@nvidia.com>
+Description: These files expose the cause of the most recent reset of the Data
+ Processing Unit (DPU) board. The possible causes are:
+ - Power auxiliary outage or power reload.
+ - Thermal shutdown.
+ - Reset request from the main board.
+ Value 1 in file means this is reset cause, 0 - otherwise. Only one of
+ the above causes could be 1 at the same time, representing only last
+ reset cause.
+
+ The files are read only.
+
+What: /sys/devices/platform/mlxplat/i2c_mlxcpld.*/i2c-*/i2c-*/*-00**/mlxreg-io.*/hwmon/hwmon*/perst_rst
+What: /sys/devices/platform/mlxplat/i2c_mlxcpld.*/i2c-*/i2c-*/*-00**/mlxreg-io.*/hwmon/hwmon*/phy_rst
+What: /sys/devices/platform/mlxplat/i2c_mlxcpld.*/i2c-*/i2c-*/*-00**/mlxreg-io.*/hwmon/hwmon*/tpm_rst
+What: /sys/devices/platform/mlxplat/i2c_mlxcpld.*/i2c-*/i2c-*/*-00**/mlxreg-io.*/hwmon/hwmon*/usbphy_rst
+Date: May 2025
+KernelVersion: 6.16
+Contact: Vadim Pasternak <vadimp@nvidia.com>
+Description: These files allow to reset hardware components of Data Process
+ Unit board. Respectively PCI, Ethernet PHY, TPM and USB PHY
+ resets.
+ Default values for all the attributes is 1. Writing 0 will
+ cause reset of the related component.
+
+ The files are read/write.
+
+What: /sys/devices/platform/mlxplat/i2c_mlxcpld.*/i2c-*/i2c-*/*-00**/mlxreg-io.*/hwmon/hwmon*/ufm_upgrade
+Date: May 2025
+KernelVersion: 6.16
+Contact: Vadim Pasternak <vadimp@nvidia.com>
+Description: These files show status of Unified Fabric Manager upgrade.
+ state. 0 - means upgrade is done, 1 - otherwise.
+
+ The file is read only.
diff --git a/Documentation/ABI/stable/sysfs-driver-qaic b/Documentation/ABI/stable/sysfs-driver-qaic
new file mode 100644
index 000000000000..c767a93342b3
--- /dev/null
+++ b/Documentation/ABI/stable/sysfs-driver-qaic
@@ -0,0 +1,19 @@
+What: /sys/bus/pci/drivers/qaic/XXXX:XX:XX.X/accel/accel<minor_nr>/dbc<N>_state
+Date: October 2025
+KernelVersion: 6.19
+Contact: Jeff Hugo <jeff.hugo@oss.qualcomm.com>
+Description: Represents the current state of DMA Bridge channel (DBC). Below are the possible
+ states:
+
+ =================== ==========================================================
+ IDLE (0) DBC is free and can be activated
+ ASSIGNED (1) DBC is activated and a workload is running on device
+ BEFORE_SHUTDOWN (2) Sub-system associated with this workload has crashed and
+ it will shutdown soon
+ AFTER_SHUTDOWN (3) Sub-system associated with this workload has crashed and
+ it has shutdown
+ BEFORE_POWER_UP (4) Sub-system associated with this workload is shutdown and
+ it will be powered up soon
+ AFTER_POWER_UP (5) Sub-system associated with this workload is now powered up
+ =================== ==========================================================
+Users: Any userspace application or clients interested in DBC state.
diff --git a/Documentation/ABI/stable/sysfs-driver-speakup b/Documentation/ABI/stable/sysfs-driver-speakup
index dc2a6ba1674b..bcb6831aa114 100644
--- a/Documentation/ABI/stable/sysfs-driver-speakup
+++ b/Documentation/ABI/stable/sysfs-driver-speakup
@@ -35,6 +35,15 @@ Description: This controls cursor delay when using arrow keys. When a
characters. Set this to a higher value to adjust for the delay
and better synchronisation between cursor position and speech.
+What: /sys/accessibility/speakup/cur_phonetic
+KernelVersion: 6.2
+Contact: speakup@linux-speakup.org
+Description: This allows speakup to speak letters phoneticaly when arrowing through
+ a word letter by letter. This doesn't affect the spelling when typing
+ the characters. When cur_phonetic=1, speakup will speak characters
+ phoneticaly when arrowing over a letter. When cur_phonetic=0, speakup
+ will speak letters as normally.
+
What: /sys/accessibility/speakup/delimiters
KernelVersion: 2.6
Contact: speakup@linux-speakup.org
diff --git a/Documentation/ABI/stable/sysfs-firmware-efi-vars b/Documentation/ABI/stable/sysfs-firmware-efi-vars
deleted file mode 100644
index 46ccd233e359..000000000000
--- a/Documentation/ABI/stable/sysfs-firmware-efi-vars
+++ /dev/null
@@ -1,79 +0,0 @@
-What: /sys/firmware/efi/vars
-Date: April 2004
-Contact: Matt Domsch <Matt_Domsch@dell.com>
-Description:
- This directory exposes interfaces for interactive with
- EFI variables. For more information on EFI variables,
- see 'Variable Services' in the UEFI specification
- (section 7.2 in specification version 2.3 Errata D).
-
- In summary, EFI variables are named, and are classified
- into separate namespaces through the use of a vendor
- GUID. They also have an arbitrary binary value
- associated with them.
-
- The efivars module enumerates these variables and
- creates a separate directory for each one found. Each
- directory has a name of the form "<key>-<vendor guid>"
- and contains the following files:
-
- =============== ========================================
- attributes: A read-only text file enumerating the
- EFI variable flags. Potential values
- include:
-
- EFI_VARIABLE_NON_VOLATILE
- EFI_VARIABLE_BOOTSERVICE_ACCESS
- EFI_VARIABLE_RUNTIME_ACCESS
- EFI_VARIABLE_HARDWARE_ERROR_RECORD
- EFI_VARIABLE_AUTHENTICATED_WRITE_ACCESS
-
- See the EFI documentation for an
- explanation of each of these variables.
-
- data: A read-only binary file that can be read
- to attain the value of the EFI variable
-
- guid: The vendor GUID of the variable. This
- should always match the GUID in the
- variable's name.
-
- raw_var: A binary file that can be read to obtain
- a structure that contains everything
- there is to know about the variable.
- For structure definition see "struct
- efi_variable" in the kernel sources.
-
- This file can also be written to in
- order to update the value of a variable.
- For this to work however, all fields of
- the "struct efi_variable" passed must
- match byte for byte with the structure
- read out of the file, save for the value
- portion.
-
- **Note** the efi_variable structure
- read/written with this file contains a
- 'long' type that may change widths
- depending on your underlying
- architecture.
-
- size: As ASCII representation of the size of
- the variable's value.
- =============== ========================================
-
-
- In addition, two other magic binary files are provided
- in the top-level directory and are used for adding and
- removing variables:
-
- =============== ========================================
- new_var: Takes a "struct efi_variable" and
- instructs the EFI firmware to create a
- new variable.
-
- del_var: Takes a "struct efi_variable" and
- instructs the EFI firmware to remove any
- variable that has a matching vendor GUID
- and variable key name.
- =============== ========================================
diff --git a/Documentation/ABI/stable/sysfs-hypervisor-xen b/Documentation/ABI/stable/sysfs-hypervisor-xen
index 748593c64568..be9ca9981bb1 100644
--- a/Documentation/ABI/stable/sysfs-hypervisor-xen
+++ b/Documentation/ABI/stable/sysfs-hypervisor-xen
@@ -120,3 +120,16 @@ Contact: xen-devel@lists.xenproject.org
Description: If running under Xen:
The Xen version is in the format <major>.<minor><extra>
This is the <minor> part of it.
+
+What: /sys/hypervisor/start_flags/*
+Date: March 2023
+KernelVersion: 6.3.0
+Contact: xen-devel@lists.xenproject.org
+Description: If running under Xen:
+ All bits in Xen's start-flags are represented as
+ boolean files, returning '1' if set, '0' otherwise.
+ This takes the place of the defunct /proc/xen/capabilities,
+ which would contain "control_d" on dom0, and be empty
+ otherwise. This flag is now exposed as "initdomain" in
+ addition to the "privileged" flag; all other possible flags
+ are accessible as "unknownXX".
diff --git a/Documentation/ABI/stable/sysfs-kernel-time-aux-clocks b/Documentation/ABI/stable/sysfs-kernel-time-aux-clocks
new file mode 100644
index 000000000000..825508f42af6
--- /dev/null
+++ b/Documentation/ABI/stable/sysfs-kernel-time-aux-clocks
@@ -0,0 +1,5 @@
+What: /sys/kernel/time/aux_clocks/<ID>/enable
+Date: May 2025
+Contact: Thomas Gleixner <tglx@linutronix.de>
+Description:
+ Controls the enablement of auxiliary clock timekeepers.
diff --git a/Documentation/ABI/stable/sysfs-module b/Documentation/ABI/stable/sysfs-module
index 560b4a3278df..41b1f16e8795 100644
--- a/Documentation/ABI/stable/sysfs-module
+++ b/Documentation/ABI/stable/sysfs-module
@@ -38,7 +38,7 @@ What: /sys/module/<MODULENAME>/srcversion
Date: Jun 2005
Description:
If the module source has MODULE_VERSION, this file will contain
- the checksum of the the source code.
+ the checksum of the source code.
What: /sys/module/<MODULENAME>/version
Date: Jun 2005
diff --git a/Documentation/ABI/stable/sysfs-platform-wmi-bmof b/Documentation/ABI/stable/sysfs-platform-wmi-bmof
new file mode 100644
index 000000000000..2881244e3f09
--- /dev/null
+++ b/Documentation/ABI/stable/sysfs-platform-wmi-bmof
@@ -0,0 +1,7 @@
+What: /sys/bus/wmi/devices/05901221-D566-11D1-B2F0-00A0C9062910[-X]/bmof
+Date: Jun 2017
+KernelVersion: 4.13
+Description:
+ Binary MOF metadata used to describe the details of available ACPI WMI interfaces.
+
+ See Documentation/wmi/devices/wmi-bmof.rst for details.
diff --git a/Documentation/ABI/stable/vdso b/Documentation/ABI/stable/vdso
index 951838d42781..85dbb6a160df 100644
--- a/Documentation/ABI/stable/vdso
+++ b/Documentation/ABI/stable/vdso
@@ -9,9 +9,11 @@ maps an ELF DSO into that program's address space. This DSO is called
the vDSO and it often contains useful and highly-optimized alternatives
to real syscalls.
-These functions are called just like ordinary C function according to
-your platform's ABI. Call them from a sensible context. (For example,
-if you set CS on x86 to something strange, the vDSO functions are
+These functions are called according to your platform's ABI. On many
+platforms they are called just like ordinary C function. On other platforms
+(ex: powerpc) they are called with the same convention as system calls which
+is different from ordinary C functions. Call them from a sensible context.
+(For example, if you set CS on x86 to something strange, the vDSO functions are
within their rights to crash.) In addition, if you pass a bad
pointer to a vDSO function, you might get SIGSEGV instead of -EFAULT.
diff --git a/Documentation/ABI/testing/configfs-tsm-report b/Documentation/ABI/testing/configfs-tsm-report
new file mode 100644
index 000000000000..534408bc1408
--- /dev/null
+++ b/Documentation/ABI/testing/configfs-tsm-report
@@ -0,0 +1,145 @@
+What: /sys/kernel/config/tsm/report/$name/inblob
+Date: September, 2023
+KernelVersion: v6.7
+Contact: linux-coco@lists.linux.dev
+Description:
+ (WO) Up to 64 bytes of user specified binary data. For replay
+ protection this should include a nonce, but the kernel does not
+ place any restrictions on the content.
+
+What: /sys/kernel/config/tsm/report/$name/outblob
+Date: September, 2023
+KernelVersion: v6.7
+Contact: linux-coco@lists.linux.dev
+Description:
+ (RO) Binary attestation report generated from @inblob and other
+ options The format of the report is implementation specific
+ where the implementation is conveyed via the @provider
+ attribute.
+
+What: /sys/kernel/config/tsm/report/$name/auxblob
+Date: October, 2023
+KernelVersion: v6.7
+Contact: linux-coco@lists.linux.dev
+Description:
+ (RO) Optional supplemental data that a TSM may emit, visibility
+ of this attribute depends on TSM, and may be empty if no
+ auxiliary data is available.
+
+ When @provider is "sev_guest" this file contains the
+ "cert_table" from SEV-ES Guest-Hypervisor Communication Block
+ Standardization v2.03 Section 4.1.8.1 MSG_REPORT_REQ.
+ https://www.amd.com/content/dam/amd/en/documents/epyc-technical-docs/specifications/56421.pdf
+
+What: /sys/kernel/config/tsm/report/$name/manifestblob
+Date: January, 2024
+KernelVersion: v6.10
+Contact: linux-coco@lists.linux.dev
+Description:
+ (RO) Optional supplemental data that a TSM may emit, visibility
+ of this attribute depends on TSM, and may be empty if no
+ manifest data is available.
+
+ See 'service_provider' for information on the format of the
+ manifest blob.
+
+What: /sys/kernel/config/tsm/report/$name/provider
+Date: September, 2023
+KernelVersion: v6.7
+Contact: linux-coco@lists.linux.dev
+Description:
+ (RO) A name for the format-specification of @outblob like
+ "sev_guest" [1] or "tdx_guest" [2] in the near term, or a
+ common standard format in the future.
+
+ [1]: SEV Secure Nested Paging Firmware ABI Specification
+ Revision 1.55 Table 22
+ https://www.amd.com/content/dam/amd/en/documents/epyc-technical-docs/specifications/56860.pdf
+
+ [2]: Intel® Trust Domain Extensions Data Center Attestation
+ Primitives : Quote Generation Library and Quote Verification
+ Library Revision 0.8 Appendix 4,5
+ https://download.01.org/intel-sgx/latest/dcap-latest/linux/docs/Intel_TDX_DCAP_Quoting_Library_API.pdf
+
+What: /sys/kernel/config/tsm/report/$name/generation
+Date: September, 2023
+KernelVersion: v6.7
+Contact: linux-coco@lists.linux.dev
+Description:
+ (RO) The value in this attribute increments each time @inblob or
+ any option is written. Userspace can detect conflicts by
+ checking generation before writing to any attribute and making
+ sure the number of writes matches expectations after reading
+ @outblob, or it can prevent conflicts by creating a report
+ instance per requesting context.
+
+What: /sys/kernel/config/tsm/report/$name/privlevel
+Date: September, 2023
+KernelVersion: v6.7
+Contact: linux-coco@lists.linux.dev
+Description:
+ (WO) Attribute is visible if a TSM implementation provider
+ supports the concept of attestation reports for TVMs running at
+ different privilege levels, like SEV-SNP "VMPL", specify the
+ privilege level via this attribute. The minimum acceptable
+ value is conveyed via @privlevel_floor and the maximum
+ acceptable value is TSM_PRIVLEVEL_MAX (3).
+
+What: /sys/kernel/config/tsm/report/$name/privlevel_floor
+Date: September, 2023
+KernelVersion: v6.7
+Contact: linux-coco@lists.linux.dev
+Description:
+ (RO) Indicates the minimum permissible value that can be written
+ to @privlevel.
+
+What: /sys/kernel/config/tsm/report/$name/service_provider
+Date: January, 2024
+KernelVersion: v6.10
+Contact: linux-coco@lists.linux.dev
+Description:
+ (WO) Attribute is visible if a TSM implementation provider
+ supports the concept of attestation reports from a service
+ provider for TVMs, like SEV-SNP running under an SVSM.
+ Specifying the service provider via this attribute will create
+ an attestation report as specified by the service provider.
+ The only currently supported service provider is "svsm".
+
+ For the "svsm" service provider, see the Secure VM Service Module
+ for SEV-SNP Guests v1.00 Section 7. For the doc, search for
+ "site:amd.com "Secure VM Service Module for SEV-SNP
+ Guests", docID: 58019"
+
+What: /sys/kernel/config/tsm/report/$name/service_guid
+Date: January, 2024
+KernelVersion: v6.10
+Contact: linux-coco@lists.linux.dev
+Description:
+ (WO) Attribute is visible if a TSM implementation provider
+ supports the concept of attestation reports from a service
+ provider for TVMs, like SEV-SNP running under an SVSM.
+ Specifying an empty/null GUID (00000000-0000-0000-0000-000000)
+ requests all active services within the service provider be
+ part of the attestation report. Specifying a GUID request
+ an attestation report of just the specified service using the
+ manifest form specified by the service_manifest_version
+ attribute.
+
+ See 'service_provider' for information on the format of the
+ service guid.
+
+What: /sys/kernel/config/tsm/report/$name/service_manifest_version
+Date: January, 2024
+KernelVersion: v6.10
+Contact: linux-coco@lists.linux.dev
+Description:
+ (WO) Attribute is visible if a TSM implementation provider
+ supports the concept of attestation reports from a service
+ provider for TVMs, like SEV-SNP running under an SVSM.
+ Indicates the service manifest version requested for the
+ attestation report (default 0). If this field is not set by
+ the user, the default manifest version of the service (the
+ service's initial/first manifest version) is returned.
+
+ See 'service_provider' for information on the format of the
+ service manifest version.
diff --git a/Documentation/ABI/testing/configfs-usb-gadget b/Documentation/ABI/testing/configfs-usb-gadget
index b7943aa7e997..a8bb896def54 100644
--- a/Documentation/ABI/testing/configfs-usb-gadget
+++ b/Documentation/ABI/testing/configfs-usb-gadget
@@ -143,3 +143,16 @@ Description:
qw_sign an identifier to be reported as "OS String"
proper
============= ===============================================
+
+What: /config/usb-gadget/gadget/webusb
+Date: Dec 2022
+KernelVersion: 6.3
+Description:
+ This group contains "WebUSB" extension handling attributes.
+
+ ============= ===============================================
+ use flag turning "WebUSB" support on/off
+ bcdVersion bcd WebUSB specification version number
+ bVendorCode one-byte value used for custom per-device
+ landingPage UTF-8 encoded URL of the device's landing page
+ ============= ===============================================
diff --git a/Documentation/ABI/testing/configfs-usb-gadget-acm b/Documentation/ABI/testing/configfs-usb-gadget-acm
index d21092d75a05..25e68be9eb66 100644
--- a/Documentation/ABI/testing/configfs-usb-gadget-acm
+++ b/Documentation/ABI/testing/configfs-usb-gadget-acm
@@ -6,3 +6,10 @@ Description:
This item contains just one readonly attribute: port_num.
It contains the port number of the /dev/ttyGS<n> device
associated with acm function's instance "name".
+
+What: /config/usb-gadget/gadget/functions/acm.name/protocol
+Date: Aug 2024
+KernelVersion: 6.13
+Description:
+ Reported bInterfaceProtocol for the ACM device. For legacy
+ reasons, this defaults to 1 (USB_CDC_ACM_PROTO_AT_V25TER).
diff --git a/Documentation/ABI/testing/configfs-usb-gadget-ffs b/Documentation/ABI/testing/configfs-usb-gadget-ffs
index e39b27653c65..bf8936ff6d38 100644
--- a/Documentation/ABI/testing/configfs-usb-gadget-ffs
+++ b/Documentation/ABI/testing/configfs-usb-gadget-ffs
@@ -4,6 +4,14 @@ KernelVersion: 3.13
Description: The purpose of this directory is to create and remove it.
A corresponding USB function instance is created/removed.
- There are no attributes here.
- All parameters are set through FunctionFS.
+ All attributes are read only:
+
+ ============= ============================================
+ ready 1 if the function is ready to be used, E.G.
+ if userspace has written descriptors and
+ strings to ep0, so the gadget can be
+ enabled - 0 otherwise.
+ ============= ============================================
+
+ All other parameters are set through FunctionFS.
diff --git a/Documentation/ABI/testing/configfs-usb-gadget-mass-storage b/Documentation/ABI/testing/configfs-usb-gadget-mass-storage
index c86b63a7bb43..fc0328069267 100644
--- a/Documentation/ABI/testing/configfs-usb-gadget-mass-storage
+++ b/Documentation/ABI/testing/configfs-usb-gadget-mass-storage
@@ -19,7 +19,7 @@ KernelVersion: 3.13
Description:
The attributes:
- =========== ==============================================
+ ============ ==============================================
file The path to the backing file for the LUN.
Required if LUN is not marked as removable.
ro Flag specifying access to the LUN shall be
@@ -32,4 +32,10 @@ Description:
being a CD-ROM.
nofua Flag specifying that FUA flag
in SCSI WRITE(10,12)
- =========== ==============================================
+ forced_eject This write-only file is useful only when
+ the function is active. It causes the backing
+ file to be forcibly detached from the LUN,
+ regardless of whether the host has allowed it.
+ Any non-zero number of bytes written will
+ result in ejection.
+ ============ ==============================================
diff --git a/Documentation/ABI/testing/configfs-usb-gadget-midi2 b/Documentation/ABI/testing/configfs-usb-gadget-midi2
new file mode 100644
index 000000000000..d76a52e2ca7f
--- /dev/null
+++ b/Documentation/ABI/testing/configfs-usb-gadget-midi2
@@ -0,0 +1,54 @@
+What: /config/usb-gadget/gadget/functions/midi2.name
+Date: Jul 2023
+KernelVersion: 6.6
+Description:
+ The attributes:
+
+ ============ ===============================================
+ process_ump Flag to process UMP Stream messages (0 or 1)
+ static_block Flag for static blocks (0 or 1)
+ iface_name MIDI interface name string
+ ============ ===============================================
+
+What: /config/usb-gadget/gadget/functions/midi2.name/ep.number
+Date: Jul 2023
+KernelVersion: 6.6
+Description:
+ This group contains a UMP Endpoint configuration.
+ A new Endpoint starts from 0, and can be up to 3.
+
+ The attributes:
+
+ ============= ===============================================
+ protocol_caps MIDI protocol capabilities (1, 2 or 3 for both)
+ protocol Default MIDI protocol (1 or 2)
+ ep_name UMP Endpoint name string
+ product_id Product ID string
+ manufacturer Manufacture ID (24 bit)
+ family Device family ID (16 bit)
+ model Device model ID (16 bit)
+ sw_revision Software Revision (32 bit)
+ ============= ===============================================
+
+What: /config/usb-gadget/gadget/functions/midi2.name/ep.number/block.number
+Date: Jul 2023
+KernelVersion: 6.6
+Description:
+ This group contains a UMP Function Block configuration.
+ A new block starts from 0, and can be up to 31.
+
+ The attributes:
+
+ ================= ==============================================
+ name Function Block name string
+ direction 1: input, 2: output, 3: bidirectional
+ first_group The first UMP Group number (0-15)
+ num_groups The number of groups in this FB (1-16)
+ midi1_first_group The first UMP Group number for MIDI 1.0 (0-15)
+ midi1_num_groups The number of groups for MIDI 1.0 (0-16)
+ ui_hint 0: unknown, 1: receiver, 2: sender, 3: both
+ midi_ci_version Supported MIDI-CI version number (8 bit)
+ is_midi1 Legacy MIDI 1.0 device (0, 1 or 2)
+ sysex8_streams Max number of SysEx8 streams (8 bit)
+ active Active FB flag (0 or 1)
+ ================= ==============================================
diff --git a/Documentation/ABI/testing/configfs-usb-gadget-uac1 b/Documentation/ABI/testing/configfs-usb-gadget-uac1
index d4b8cf40a9e4..64188a85592b 100644
--- a/Documentation/ABI/testing/configfs-usb-gadget-uac1
+++ b/Documentation/ABI/testing/configfs-usb-gadget-uac1
@@ -6,7 +6,7 @@ Description:
===================== =======================================
c_chmask capture channel mask
- c_srate capture sampling rate
+ c_srate list of capture sampling rates (comma-separated)
c_ssize capture sample size (bytes)
c_mute_present capture mute control enable
c_volume_present capture volume control enable
@@ -17,7 +17,7 @@ Description:
c_volume_res capture volume control resolution
(in 1/256 dB)
p_chmask playback channel mask
- p_srate playback sampling rate
+ p_srate list of playback sampling rates (comma-separated)
p_ssize playback sample size (bytes)
p_mute_present playback mute control enable
p_volume_present playback volume control enable
@@ -29,4 +29,13 @@ Description:
(in 1/256 dB)
req_number the number of pre-allocated requests
for both capture and playback
+ function_name name of the interface
+ p_it_name playback input terminal name
+ p_it_ch_name playback channels name
+ p_ot_name playback output terminal name
+ p_fu_vol_name playback mute/volume functional unit name
+ c_it_name capture input terminal name
+ c_it_ch_name capture channels name
+ c_ot_name capture output terminal name
+ c_fu_vol_name capture mute/volume functional unit name
===================== =======================================
diff --git a/Documentation/ABI/testing/configfs-usb-gadget-uac2 b/Documentation/ABI/testing/configfs-usb-gadget-uac2
index 7fb3dbe26857..133e995c3e92 100644
--- a/Documentation/ABI/testing/configfs-usb-gadget-uac2
+++ b/Documentation/ABI/testing/configfs-usb-gadget-uac2
@@ -6,8 +6,9 @@ Description:
===================== =======================================
c_chmask capture channel mask
- c_srate capture sampling rate
+ c_srate list of capture sampling rates (comma-separated)
c_ssize capture sample size (bytes)
+ c_hs_bint capture bInterval for HS/SS (1-4: fixed, 0: auto)
c_sync capture synchronization type
(async/adaptive)
c_mute_present capture mute control enable
@@ -20,8 +21,9 @@ Description:
(in 1/256 dB)
fb_max maximum extra bandwidth in async mode
p_chmask playback channel mask
- p_srate playback sampling rate
+ p_srate list of playback sampling rates (comma-separated)
p_ssize playback sample size (bytes)
+ p_hs_bint playback bInterval for HS/SS (1-4: fixed, 0: auto)
p_mute_present playback mute control enable
p_volume_present playback volume control enable
p_volume_min playback volume control min value
@@ -32,4 +34,18 @@ Description:
(in 1/256 dB)
req_number the number of pre-allocated requests
for both capture and playback
+ function_name name of the interface
+ if_ctrl_name topology control name
+ clksrc_in_name input clock name
+ clksrc_out_name output clock name
+ p_it_name playback input terminal name
+ p_it_ch_name playback input first channel name
+ p_ot_name playback output terminal name
+ p_fu_vol_name playback mute/volume function unit name
+ c_it_name capture input terminal name
+ c_it_ch_name capture input first channel name
+ c_ot_name capture output terminal name
+ c_fu_vol_name capture mute/volume functional unit name
+ c_terminal_type code of the capture terminal type
+ p_terminal_type code of the playback terminal type
===================== =======================================
diff --git a/Documentation/ABI/testing/configfs-usb-gadget-uvc b/Documentation/ABI/testing/configfs-usb-gadget-uvc
index 889ed45be4ca..b6720768d63d 100644
--- a/Documentation/ABI/testing/configfs-usb-gadget-uvc
+++ b/Documentation/ABI/testing/configfs-usb-gadget-uvc
@@ -7,6 +7,7 @@ Description: UVC function directory
streaming_maxburst 0..15 (ss only)
streaming_maxpacket 1..1023 (fs), 1..3072 (hs/ss)
streaming_interval 1..16
+ function_name string [32]
=================== =============================
What: /config/usb-gadget/gadget/functions/uvc.name/control
@@ -14,12 +15,14 @@ Date: Dec 2014
KernelVersion: 4.0
Description: Control descriptors
- All attributes read only:
+ All attributes read only except enable_interrupt_ep:
- ================ =============================
+ =================== =============================
bInterfaceNumber USB interface number for this
streaming interface
- ================ =============================
+ enable_interrupt_ep flag to enable the interrupt
+ endpoint for the VC interface
+ =================== =============================
What: /config/usb-gadget/gadget/functions/uvc.name/control/class
Date: Dec 2014
@@ -51,7 +54,7 @@ Date: Dec 2014
KernelVersion: 4.0
Description: Default output terminal descriptors
- All attributes read only:
+ All attributes read only except bSourceID:
============== =============================================
iTerminal index of string descriptor
@@ -73,7 +76,7 @@ Date: Dec 2014
KernelVersion: 4.0
Description: Default camera terminal descriptors
- All attributes read only:
+ All attributes read only except bmControls, which is read/write:
======================== ====================================
bmControls bitmap specifying which controls are
@@ -98,7 +101,7 @@ Date: Dec 2014
KernelVersion: 4.0
Description: Default processing unit descriptors
- All attributes read only:
+ All attributes read only except bmControls, which is read/write:
=============== ========================================
iProcessing index of string descriptor
@@ -110,6 +113,34 @@ Description: Default processing unit descriptors
bUnitID a non-zero id of this unit
=============== ========================================
+What: /config/usb-gadget/gadget/functions/uvc.name/control/extensions
+Date: Nov 2022
+KernelVersion: 6.1
+Description: Extension unit descriptors
+
+What: /config/usb-gadget/gadget/functions/uvc.name/control/extensions/name
+Date: Nov 2022
+KernelVersion: 6.1
+Description: Extension Unit (XU) Descriptor
+
+ bLength, bUnitID and iExtension are read-only. All others are
+ read-write.
+
+ ================= ========================================
+ bLength size of the descriptor in bytes
+ bUnitID non-zero ID of this unit
+ guidExtensionCode Vendor-specific code identifying the XU
+ bNumControls number of controls in this XU
+ bNrInPins number of input pins for this unit
+ baSourceID list of the IDs of the units or terminals
+ to which this XU is connected
+ bControlSize size of the bmControls field in bytes
+ bmControls list of bitmaps detailing which vendor
+ specific controls are supported
+ iExtension index of a string descriptor that describes
+ this extension unit
+ ================= ========================================
+
What: /config/usb-gadget/gadget/functions/uvc.name/control/header
Date: Dec 2014
KernelVersion: 4.0
@@ -164,7 +195,24 @@ Date: Dec 2014
KernelVersion: 4.0
Description: Default color matching descriptors
- All attributes read only:
+ All attributes read/write:
+
+ ======================== ======================================
+ bMatrixCoefficients matrix used to compute luma and
+ chroma values from the color primaries
+ bTransferCharacteristics optoelectronic transfer
+ characteristic of the source picture,
+ also called the gamma function
+ bColorPrimaries color primaries and the reference
+ white
+ ======================== ======================================
+
+What: /config/usb-gadget/gadget/functions/uvc.name/streaming/color_matching/name
+Date: Dec 2022
+KernelVersion: 6.3
+Description: Additional color matching descriptors
+
+ All attributes read/write:
======================== ======================================
bMatrixCoefficients matrix used to compute luma and
@@ -196,7 +244,7 @@ Description: Specific MJPEG format descriptors
read-only
bmaControls this format's data for bmaControls in
the streaming header
- bmInterfaceFlags specifies interlace information,
+ bmInterlaceFlags specifies interlace information,
read-only
bAspectRatioY the X dimension of the picture aspect
ratio, read-only
@@ -252,7 +300,7 @@ Description: Specific uncompressed format descriptors
read-only
bmaControls this format's data for bmaControls in
the streaming header
- bmInterfaceFlags specifies interlace information,
+ bmInterlaceFlags specifies interlace information,
read-only
bAspectRatioY the X dimension of the picture aspect
ratio, read-only
@@ -294,6 +342,70 @@ Description: Specific uncompressed frame descriptors
support
========================= =====================================
+What: /config/usb-gadget/gadget/functions/uvc.name/streaming/framebased
+Date: Sept 2024
+KernelVersion: 5.15
+Description: Framebased format descriptors
+
+What: /config/usb-gadget/gadget/functions/uvc.name/streaming/framebased/name
+Date: Sept 2024
+KernelVersion: 5.15
+Description: Specific framebased format descriptors
+
+ ================== =======================================
+ bFormatIndex unique id for this format descriptor;
+ only defined after parent header is
+ linked into the streaming class;
+ read-only
+ bmaControls this format's data for bmaControls in
+ the streaming header
+ bmInterlaceFlags specifies interlace information,
+ read-only
+ bAspectRatioY the X dimension of the picture aspect
+ ratio, read-only
+ bAspectRatioX the Y dimension of the picture aspect
+ ratio, read-only
+ bDefaultFrameIndex optimum frame index for this stream
+ bBitsPerPixel number of bits per pixel used to
+ specify color in the decoded video
+ frame
+ guidFormat globally unique id used to identify
+ stream-encoding format
+ ================== =======================================
+
+What: /config/usb-gadget/gadget/functions/uvc.name/streaming/framebased/name/name
+Date: Sept 2024
+KernelVersion: 5.15
+Description: Specific framebased frame descriptors
+
+ ========================= =====================================
+ bFrameIndex unique id for this framedescriptor;
+ only defined after parent format is
+ linked into the streaming header;
+ read-only
+ dwFrameInterval indicates how frame interval can be
+ programmed; a number of values
+ separated by newline can be specified
+ dwDefaultFrameInterval the frame interval the device would
+ like to use as default
+ dwBytesPerLine Specifies the number of bytes per line
+ of video for packed fixed frame size
+ formats, allowing the receiver to
+ perform stride alignment of the video.
+ If the bVariableSize value (above) is
+ TRUE (1), or if the format does not
+ permit such alignment, this value shall
+ be set to zero (0).
+ dwMaxBitRate the maximum bit rate at the shortest
+ frame interval in bps
+ dwMinBitRate the minimum bit rate at the longest
+ frame interval in bps
+ wHeight height of decoded bitmap frame in px
+ wWidth width of decoded bitmam frame in px
+ bmCapabilities still image support, fixed frame-rate
+ support
+ ========================= =====================================
+
What: /config/usb-gadget/gadget/functions/uvc.name/streaming/header
Date: Dec 2014
KernelVersion: 4.0
diff --git a/Documentation/ABI/testing/debugfs-alienware-wmi b/Documentation/ABI/testing/debugfs-alienware-wmi
new file mode 100644
index 000000000000..c7f525d6baac
--- /dev/null
+++ b/Documentation/ABI/testing/debugfs-alienware-wmi
@@ -0,0 +1,64 @@
+What: /sys/kernel/debug/alienware-wmi-<wmi_device_name>/system_description
+Date: March 2025
+KernelVersion: 6.15
+Contact: Kurt Borja <kuurtb@gmail.com>
+Description:
+ This file exposes the raw ``system_description`` number reported
+ by the WMAX device.
+
+ Only present on devices with the AWCC interface.
+
+ See Documentation/admin-guide/laptops/alienware-wmi.rst for
+ details.
+
+ RO
+
+What: /sys/kernel/debug/alienware-wmi-<wmi_device_name>/hwmon_data
+Date: March 2025
+KernelVersion: 6.15
+Contact: Kurt Borja <kuurtb@gmail.com>
+Description:
+ This file exposes HWMON private data.
+
+ Includes fan sensor count, temperature sensor count, internal
+ fan IDs and internal temp IDs.
+
+ See Documentation/admin-guide/laptops/alienware-wmi.rst for
+ details.
+
+ RO
+
+What: /sys/kernel/debug/alienware-wmi-<wmi_device_name>/pprof_data
+Date: March 2025
+KernelVersion: 6.15
+Contact: Kurt Borja <kuurtb@gmail.com>
+Description:
+ This file exposes Platform Profile private data.
+
+ Includes internal mapping to platform profiles and thermal
+ profile IDs.
+
+ See Documentation/admin-guide/laptops/alienware-wmi.rst for
+ details.
+
+ RO
+
+What: /sys/kernel/debug/alienware-wmi-<wmi_device_name>/gpio_ctl/total_gpios
+Date: May 2025
+KernelVersion: 6.16
+Contact: Kurt Borja <kuurtb@gmail.com>
+Description:
+ Total number of GPIO pins reported by the device.
+
+ RO
+
+What: /sys/kernel/debug/alienware-wmi-<wmi_device_name>/gpio_ctl/pinX
+Date: May 2025
+KernelVersion: 6.16
+Contact: Kurt Borja <kuurtb@gmail.com>
+Description:
+ This file controls GPIO pin X status.
+
+ See Documentation/wmi/devices/alienware-wmi.rst for details.
+
+ RW
diff --git a/Documentation/ABI/testing/debugfs-amd-iommu b/Documentation/ABI/testing/debugfs-amd-iommu
new file mode 100644
index 000000000000..5621a66aa693
--- /dev/null
+++ b/Documentation/ABI/testing/debugfs-amd-iommu
@@ -0,0 +1,131 @@
+What: /sys/kernel/debug/iommu/amd/iommu<x>/mmio
+Date: January 2025
+Contact: Dheeraj Kumar Srivastava <dheerajkumar.srivastava@amd.com>
+Description:
+ This file provides read/write access for user input. Users specify the
+ MMIO register offset for iommu<x>, and the file outputs the corresponding
+ MMIO register value of iommu<x>
+
+ Example::
+
+ $ echo "0x18" > /sys/kernel/debug/iommu/amd/iommu00/mmio
+ $ cat /sys/kernel/debug/iommu/amd/iommu00/mmio
+
+ Output::
+
+ Offset:0x18 Value:0x000c22000003f48d
+
+What: /sys/kernel/debug/iommu/amd/iommu<x>/capability
+Date: January 2025
+Contact: Dheeraj Kumar Srivastava <dheerajkumar.srivastava@amd.com>
+Description:
+ This file provides read/write access for user input. Users specify the
+ capability register offset for iommu<x>, and the file outputs the
+ corresponding capability register value of iommu<x>.
+
+ Example::
+
+ $ echo "0x10" > /sys/kernel/debug/iommu/amd/iommu00/capability
+ $ cat /sys/kernel/debug/iommu/amd/iommu00/capability
+
+ Output::
+
+ Offset:0x10 Value:0x00203040
+
+What: /sys/kernel/debug/iommu/amd/iommu<x>/cmdbuf
+Date: January 2025
+Contact: Dheeraj Kumar Srivastava <dheerajkumar.srivastava@amd.com>
+Description:
+ This file is a read-only output file containing iommu<x> command
+ buffer entries.
+
+ Examples::
+
+ $ cat /sys/kernel/debug/iommu/amd/iommu<x>/cmdbuf
+
+ Output::
+
+ CMD Buffer Head Offset:339 Tail Offset:339
+ 0: 00835001 10000001 00003c00 00000000
+ 1: 00000000 30000005 fffff003 7fffffff
+ 2: 00835001 10000001 00003c01 00000000
+ 3: 00000000 30000005 fffff003 7fffffff
+ 4: 00835001 10000001 00003c02 00000000
+ 5: 00000000 30000005 fffff003 7fffffff
+ 6: 00835001 10000001 00003c03 00000000
+ 7: 00000000 30000005 fffff003 7fffffff
+ 8: 00835001 10000001 00003c04 00000000
+ 9: 00000000 30000005 fffff003 7fffffff
+ 10: 00835001 10000001 00003c05 00000000
+ 11: 00000000 30000005 fffff003 7fffffff
+ [...]
+
+What: /sys/kernel/debug/iommu/amd/devid
+Date: January 2025
+Contact: Dheeraj Kumar Srivastava <dheerajkumar.srivastava@amd.com>
+Description:
+ This file provides read/write access for user input. Users specify the
+ device ID, which can be used to dump IOMMU data structures such as the
+ interrupt remapping table and device table.
+
+ Example:
+
+ 1.
+ ::
+
+ $ echo 0000:01:00.0 > /sys/kernel/debug/iommu/amd/devid
+ $ cat /sys/kernel/debug/iommu/amd/devid
+
+ Output::
+
+ 0000:01:00.0
+
+ 2.
+ ::
+
+ $ echo 01:00.0 > /sys/kernel/debug/iommu/amd/devid
+ $ cat /sys/kernel/debug/iommu/amd/devid
+
+ Output::
+
+ 0000:01:00.0
+
+What: /sys/kernel/debug/iommu/amd/devtbl
+Date: January 2025
+Contact: Dheeraj Kumar Srivastava <dheerajkumar.srivastava@amd.com>
+Description:
+ This file is a read-only output file containing the device table entry
+ for the device ID provided in /sys/kernel/debug/iommu/amd/devid.
+
+ Example::
+
+ $ cat /sys/kernel/debug/iommu/amd/devtbl
+
+ Output::
+
+ DeviceId QWORD[3] QWORD[2] QWORD[1] QWORD[0] iommu
+ 0000:01:00.0 0000000000000000 20000001373b8013 0000000000000038 6000000114d7b603 iommu3
+
+What: /sys/kernel/debug/iommu/amd/irqtbl
+Date: January 2025
+Contact: Dheeraj Kumar Srivastava <dheerajkumar.srivastava@amd.com>
+Description:
+ This file is a read-only output file containing valid IRT table entries
+ for the device ID provided in /sys/kernel/debug/iommu/amd/devid.
+
+ Example::
+
+ $ cat /sys/kernel/debug/iommu/amd/irqtbl
+
+ Output::
+
+ DeviceId 0000:01:00.0
+ IRT[0000] 0000000000000020 0000000000000241
+ IRT[0001] 0000000000000020 0000000000000841
+ IRT[0002] 0000000000000020 0000000000002041
+ IRT[0003] 0000000000000020 0000000000008041
+ IRT[0004] 0000000000000020 0000000000020041
+ IRT[0005] 0000000000000020 0000000000080041
+ IRT[0006] 0000000000000020 0000000000200041
+ IRT[0007] 0000000000000020 0000000000800041
+ [...]
diff --git a/Documentation/ABI/testing/debugfs-cec-error-inj b/Documentation/ABI/testing/debugfs-cec-error-inj
index 8debcb08a3b5..c512f71bba8e 100644
--- a/Documentation/ABI/testing/debugfs-cec-error-inj
+++ b/Documentation/ABI/testing/debugfs-cec-error-inj
@@ -1,6 +1,6 @@
What: /sys/kernel/debug/cec/*/error-inj
Date: March 2018
-Contact: Hans Verkuil <hverkuil-cisco@xs4all.nl>
+Contact: Hans Verkuil <hverkuil@kernel.org>
Description:
The CEC Framework allows for CEC error injection commands through
diff --git a/Documentation/ABI/testing/debugfs-cros-ec b/Documentation/ABI/testing/debugfs-cros-ec
index 1fe0add99a2a..9a040c6f5e03 100644
--- a/Documentation/ABI/testing/debugfs-cros-ec
+++ b/Documentation/ABI/testing/debugfs-cros-ec
@@ -54,3 +54,25 @@ Description:
this feature.
Output will be in the format: "0x%08x\n".
+
+What: /sys/kernel/debug/<cros-ec-device>/suspend_timeout_ms
+Date: August 2022
+KernelVersion: 6.1
+Description:
+ Some ECs have a feature where they will track transitions of
+ a hardware-controlled sleep line, such as Intel's SLP_S0 line,
+ in order to detect cases where a system failed to go into deep
+ sleep states. The suspend_timeout_ms file controls the amount of
+ time in milliseconds the EC will wait before declaring a sleep
+ timeout event and attempting to wake the system.
+
+ Supply 0 to use the default value coded into EC firmware. Supply
+ 65535 (EC_HOST_SLEEP_TIMEOUT_INFINITE) to disable the EC sleep
+ failure detection mechanism. Values in between 0 and 65535
+ indicate the number of milliseconds the EC should wait after a
+ sleep transition before declaring a timeout. This includes both
+ the duration after a sleep command was received but before the
+ hardware line changed, as well as the duration between when the
+ hardware line changed and the kernel sent an EC resume command.
+
+ Output will be in the format: "%u\n".
diff --git a/Documentation/ABI/testing/debugfs-cxl b/Documentation/ABI/testing/debugfs-cxl
new file mode 100644
index 000000000000..2989d4da96c1
--- /dev/null
+++ b/Documentation/ABI/testing/debugfs-cxl
@@ -0,0 +1,157 @@
+What: /sys/kernel/debug/cxl/memX/inject_poison
+Date: April, 2023
+KernelVersion: v6.4
+Contact: linux-cxl@vger.kernel.org
+Description:
+ (WO) When a Device Physical Address (DPA) is written to this
+ attribute, the memdev driver sends an inject poison command to
+ the device for the specified address. The DPA must be 64-byte
+ aligned and the length of the injected poison is 64-bytes. If
+ successful, the device returns poison when the address is
+ accessed through the CXL.mem bus. Injecting poison adds the
+ address to the device's Poison List and the error source is set
+ to Injected. In addition, the device adds a poison creation
+ event to its internal Informational Event log, updates the
+ Event Status register, and if configured, interrupts the host.
+ It is not an error to inject poison into an address that
+ already has poison present and no error is returned. If the
+ device returns 'Inject Poison Limit Reached' an -EBUSY error
+ is returned to the user. The inject_poison attribute is only
+ visible for devices supporting the capability.
+
+ TEST-ONLY INTERFACE: This interface is intended for testing
+ and validation purposes only. It is not a data repair mechanism
+ and should never be used on production systems or live data.
+
+ DATA LOSS RISK: For CXL persistent memory (PMEM) devices,
+ poison injection can result in permanent data loss. Injected
+ poison may render data permanently inaccessible even after
+ clearing, as the clear operation writes zeros and does not
+ recover original data.
+
+ SYSTEM STABILITY RISK: For volatile memory, poison injection
+ can cause kernel crashes, system instability, or unpredictable
+ behavior if the poisoned addresses are accessed by running code
+ or critical kernel structures.
+
+What: /sys/kernel/debug/cxl/memX/clear_poison
+Date: April, 2023
+KernelVersion: v6.4
+Contact: linux-cxl@vger.kernel.org
+Description:
+ (WO) When a Device Physical Address (DPA) is written to this
+ attribute, the memdev driver sends a clear poison command to
+ the device for the specified address. Clearing poison removes
+ the address from the device's Poison List and writes 0 (zero)
+ for 64 bytes starting at address. It is not an error to clear
+ poison from an address that does not have poison set. If the
+ device cannot clear poison from the address, -ENXIO is returned.
+ The clear_poison attribute is only visible for devices
+ supporting the capability.
+
+ TEST-ONLY INTERFACE: This interface is intended for testing
+ and validation purposes only. It is not a data repair mechanism
+ and should never be used on production systems or live data.
+
+ CLEAR IS NOT DATA RECOVERY: This operation writes zeros to the
+ specified address range and removes the address from the poison
+ list. It does NOT recover or restore original data that may have
+ been present before poison injection. Any original data at the
+ cleared address is permanently lost and replaced with zeros.
+
+ CLEAR IS NOT A REPAIR MECHANISM: This interface is for testing
+ purposes only and should not be used as a data repair tool.
+ Clearing poison is fundamentally different from data recovery
+ or error correction.
+
+What: /sys/kernel/debug/cxl/regionX/inject_poison
+Date: August, 2025
+Contact: linux-cxl@vger.kernel.org
+Description:
+ (WO) When a Host Physical Address (HPA) is written to this
+ attribute, the region driver translates it to a Device
+ Physical Address (DPA) and identifies the corresponding
+ memdev. It then sends an inject poison command to that memdev
+ at the translated DPA. Refer to the memdev ABI entry at:
+ /sys/kernel/debug/cxl/memX/inject_poison for the detailed
+ behavior. This attribute is only visible if all memdevs
+ participating in the region support both inject and clear
+ poison commands.
+
+ TEST-ONLY INTERFACE: This interface is intended for testing
+ and validation purposes only. It is not a data repair mechanism
+ and should never be used on production systems or live data.
+
+ DATA LOSS RISK: For CXL persistent memory (PMEM) devices,
+ poison injection can result in permanent data loss. Injected
+ poison may render data permanently inaccessible even after
+ clearing, as the clear operation writes zeros and does not
+ recover original data.
+
+ SYSTEM STABILITY RISK: For volatile memory, poison injection
+ can cause kernel crashes, system instability, or unpredictable
+ behavior if the poisoned addresses are accessed by running code
+ or critical kernel structures.
+
+What: /sys/kernel/debug/cxl/regionX/clear_poison
+Date: August, 2025
+Contact: linux-cxl@vger.kernel.org
+Description:
+ (WO) When a Host Physical Address (HPA) is written to this
+ attribute, the region driver translates it to a Device
+ Physical Address (DPA) and identifies the corresponding
+ memdev. It then sends a clear poison command to that memdev
+ at the translated DPA. Refer to the memdev ABI entry at:
+ /sys/kernel/debug/cxl/memX/clear_poison for the detailed
+ behavior. This attribute is only visible if all memdevs
+ participating in the region support both inject and clear
+ poison commands.
+
+ TEST-ONLY INTERFACE: This interface is intended for testing
+ and validation purposes only. It is not a data repair mechanism
+ and should never be used on production systems or live data.
+
+ CLEAR IS NOT DATA RECOVERY: This operation writes zeros to the
+ specified address range and removes the address from the poison
+ list. It does NOT recover or restore original data that may have
+ been present before poison injection. Any original data at the
+ cleared address is permanently lost and replaced with zeros.
+
+ CLEAR IS NOT A REPAIR MECHANISM: This interface is for testing
+ purposes only and should not be used as a data repair tool.
+ Clearing poison is fundamentally different from data recovery
+ or error correction.
+
+What: /sys/kernel/debug/cxl/einj_types
+Date: January, 2024
+KernelVersion: v6.9
+Contact: linux-cxl@vger.kernel.org
+Description:
+ (RO) Prints the CXL protocol error types made available by
+ the platform in the format:
+
+ 0x<error number> <error type>
+
+ The possible error types are (as of ACPI v6.5):
+
+ 0x1000 CXL.cache Protocol Correctable
+ 0x2000 CXL.cache Protocol Uncorrectable non-fatal
+ 0x4000 CXL.cache Protocol Uncorrectable fatal
+ 0x8000 CXL.mem Protocol Correctable
+ 0x10000 CXL.mem Protocol Uncorrectable non-fatal
+ 0x20000 CXL.mem Protocol Uncorrectable fatal
+
+ The <error number> can be written to einj_inject to inject
+ <error type> into a chosen dport.
+
+What: /sys/kernel/debug/cxl/$dport_dev/einj_inject
+Date: January, 2024
+KernelVersion: v6.9
+Contact: linux-cxl@vger.kernel.org
+Description:
+ (WO) Writing an integer to this file injects the corresponding
+ CXL protocol error into $dport_dev ($dport_dev will be a device
+ name from /sys/bus/pci/devices). The integer to type mapping for
+ injection can be found by reading from einj_types. If the dport
+ was enumerated in RCH mode, a CXL 1.1 error is injected, otherwise
+ a CXL 2.0 error is injected.
diff --git a/Documentation/ABI/testing/debugfs-dell-wmi-ddv b/Documentation/ABI/testing/debugfs-dell-wmi-ddv
new file mode 100644
index 000000000000..81cfc788be15
--- /dev/null
+++ b/Documentation/ABI/testing/debugfs-dell-wmi-ddv
@@ -0,0 +1,34 @@
+What: /sys/kernel/debug/dell-wmi-ddv-<wmi_device_name>/fan_sensor_information
+Date: September 2022
+KernelVersion: 6.1
+Contact: Armin Wolf <W_Armin@gmx.de>
+Description:
+ This file contains the contents of the fan sensor information
+ buffer, which contains fan sensor entries and a terminating
+ character (0xFF).
+
+ Each fan sensor entry contains:
+
+ - fan type (single byte)
+ - fan speed in RPM (two bytes, little endian)
+
+ See Documentation/wmi/devices/dell-wmi-ddv.rst for details.
+
+What: /sys/kernel/debug/dell-wmi-ddv-<wmi_device_name>/thermal_sensor_information
+Date: September 2022
+KernelVersion: 6.1
+Contact: Armin Wolf <W_Armin@gmx.de>
+Description:
+ This file contains the contents of the thermal sensor information
+ buffer, which contains thermal sensor entries and a terminating
+ character (0xFF).
+
+ Each thermal sensor entry contains:
+
+ - thermal type (single byte)
+ - current temperature (single byte)
+ - min. temperature (single byte)
+ - max. temperature (single byte)
+ - unknown field (single byte)
+
+ See Documentation/wmi/devices/dell-wmi-ddv.rst for details.
diff --git a/Documentation/ABI/testing/debugfs-driver-dcc b/Documentation/ABI/testing/debugfs-driver-dcc
new file mode 100644
index 000000000000..27ed5919d21b
--- /dev/null
+++ b/Documentation/ABI/testing/debugfs-driver-dcc
@@ -0,0 +1,127 @@
+What: /sys/kernel/debug/dcc/.../ready
+Date: December 2022
+Contact: Souradeep Chowdhury <quic_schowdhu@quicinc.com>
+Description:
+ This file is used to check the status of the dcc
+ hardware if it's ready to receive user configurations.
+ A 'Y' here indicates dcc is ready.
+
+What: /sys/kernel/debug/dcc/.../trigger
+Date: December 2022
+Contact: Souradeep Chowdhury <quic_schowdhu@quicinc.com>
+Description:
+ This is the debugfs interface for manual software
+ triggers. The trigger can be invoked by writing '1'
+ to the file.
+
+What: /sys/kernel/debug/dcc/.../config_reset
+Date: December 2022
+Contact: Souradeep Chowdhury <quic_schowdhu@quicinc.com>
+Description:
+ This file is used to reset the configuration of
+ a dcc driver to the default configuration. When '1'
+ is written to the file, all the previous addresses
+ stored in the driver gets removed and users need to
+ reconfigure addresses again.
+
+What: /sys/kernel/debug/dcc/.../[list-number]/config
+Date: December 2022
+Contact: Souradeep Chowdhury <quic_schowdhu@quicinc.com>
+Description:
+ This stores the addresses of the registers which
+ can be read in case of a hardware crash or manual
+ software triggers. The input addresses type
+ can be one of following dcc instructions: read,
+ write, read-write, and loop type. The lists need to
+ be configured sequentially and not in a overlapping
+ manner; e.g. users can jump to list x only after
+ list y is configured and enabled. The input format for
+ each type is as follows:
+
+ i) Read instruction
+
+ ::
+
+ echo R <addr> <n> <bus> >/sys/kernel/debug/dcc/../[list-number]/config
+
+ where:
+
+ <addr>
+ The address to be read.
+
+ <n>
+ The addresses word count, starting from address <1>.
+ Each word is 32 bits (4 bytes). If omitted, defaulted
+ to 1.
+
+ <bus type>
+ The bus type, which can be either 'apb' or 'ahb'.
+ The default is 'ahb' if leaved out.
+
+ ii) Write instruction
+
+ ::
+
+ echo W <addr> <n> <bus type> > /sys/kernel/debug/dcc/../[list-number]/config
+
+ where:
+
+ <addr>
+ The address to be written.
+
+ <n>
+ The value to be written at <addr>.
+
+ <bus type>
+ The bus type, which can be either 'apb' or 'ahb'.
+
+ iii) Read-write instruction
+
+ ::
+
+ echo RW <addr> <n> <mask> > /sys/kernel/debug/dcc/../[list-number]/config
+
+ where:
+
+ <addr>
+ The address to be read and written.
+
+ <n>
+ The value to be written at <addr>.
+
+ <mask>
+ The value mask.
+
+ iv) Loop instruction
+
+ ::
+
+ echo L <loop count> <address count> <address>... > /sys/kernel/debug/dcc/../[list-number]/config
+
+ where:
+
+ <loop count>
+ Number of iterations
+
+ <address count>
+ total number of addresses to be written
+
+ <address>
+ Space-separated list of addresses.
+
+What: /sys/kernel/debug/dcc/.../[list-number]/enable
+Date: December 2022
+Contact: Souradeep Chowdhury <quic_schowdhu@quicinc.com>
+Description:
+ This debugfs interface is used for enabling the
+ the dcc hardware. A file named "enable" is in the
+ directory list number where users can enable/disable
+ the specific list by writing boolean (1 or 0) to the
+ file.
+
+ On enabling the dcc, all the addresses specified
+ by the user for the corresponding list is written
+ into dcc sram which is read by the dcc hardware
+ on manual or crash induced triggers. Lists must
+ be configured and enabled sequentially, e.g. list
+ 2 can only be enabled when list 1 have so.
diff --git a/Documentation/ABI/testing/debugfs-driver-habanalabs b/Documentation/ABI/testing/debugfs-driver-habanalabs
index 2667cbf940f3..3318a14f35b9 100644
--- a/Documentation/ABI/testing/debugfs-driver-habanalabs
+++ b/Documentation/ABI/testing/debugfs-driver-habanalabs
@@ -1,4 +1,4 @@
-What: /sys/kernel/debug/habanalabs/hl<n>/addr
+What: /sys/kernel/debug/accel/<parent_device>/addr
Date: Jan 2019
KernelVersion: 5.1
Contact: ogabbay@kernel.org
@@ -8,51 +8,34 @@ Description: Sets the device address to be used for read or write through
only when the IOMMU is disabled.
The acceptable value is a string that starts with "0x"
-What: /sys/kernel/debug/habanalabs/hl<n>/clk_gate
+What: /sys/kernel/debug/accel/<parent_device>/clk_gate
Date: May 2020
KernelVersion: 5.8
Contact: ogabbay@kernel.org
-Description: Allow the root user to disable/enable in runtime the clock
- gating mechanism in Gaudi. Due to how Gaudi is built, the
- clock gating needs to be disabled in order to access the
- registers of the TPC and MME engines. This is sometimes needed
- during debug by the user and hence the user needs this option.
- The user can supply a bitmask value, each bit represents
- a different engine to disable/enable its clock gating feature.
- The bitmask is composed of 20 bits:
-
- ======= ============
- 0 - 7 DMA channels
- 8 - 11 MME engines
- 12 - 19 TPC engines
- ======= ============
-
- The bit's location of a specific engine can be determined
- using (1 << GAUDI_ENGINE_ID_*). GAUDI_ENGINE_ID_* values
- are defined in uapi habanalabs.h file in enum gaudi_engine_id
-
-What: /sys/kernel/debug/habanalabs/hl<n>/command_buffers
+Description: This setting is now deprecated as clock gating is handled solely by the f/w
+
+What: /sys/kernel/debug/accel/<parent_device>/command_buffers
Date: Jan 2019
KernelVersion: 5.1
Contact: ogabbay@kernel.org
Description: Displays a list with information about the currently allocated
command buffers
-What: /sys/kernel/debug/habanalabs/hl<n>/command_submission
+What: /sys/kernel/debug/accel/<parent_device>/command_submission
Date: Jan 2019
KernelVersion: 5.1
Contact: ogabbay@kernel.org
Description: Displays a list with information about the currently active
command submissions
-What: /sys/kernel/debug/habanalabs/hl<n>/command_submission_jobs
+What: /sys/kernel/debug/accel/<parent_device>/command_submission_jobs
Date: Jan 2019
KernelVersion: 5.1
Contact: ogabbay@kernel.org
Description: Displays a list with detailed information about each JOB (CB) of
each active command submission
-What: /sys/kernel/debug/habanalabs/hl<n>/data32
+What: /sys/kernel/debug/accel/<parent_device>/data32
Date: Jan 2019
KernelVersion: 5.1
Contact: ogabbay@kernel.org
@@ -67,7 +50,7 @@ Description: Allows the root user to read or write directly through the
If the IOMMU is disabled, it also allows the root user to read
or write from the host a device VA of a host mapped memory
-What: /sys/kernel/debug/habanalabs/hl<n>/data64
+What: /sys/kernel/debug/accel/<parent_device>/data64
Date: Jan 2020
KernelVersion: 5.6
Contact: ogabbay@kernel.org
@@ -82,7 +65,7 @@ Description: Allows the root user to read or write 64 bit data directly
If the IOMMU is disabled, it also allows the root user to read
or write from the host a device VA of a host mapped memory
-What: /sys/kernel/debug/habanalabs/hl<n>/data_dma
+What: /sys/kernel/debug/accel/<parent_device>/data_dma
Date: Apr 2021
KernelVersion: 5.13
Contact: ogabbay@kernel.org
@@ -96,11 +79,11 @@ Description: Allows the root user to read from the device's internal
a very long time.
This interface doesn't support concurrency in the same device.
In GAUDI and GOYA, this action can cause undefined behavior
- in case the it is done while the device is executing user
+ in case it is done while the device is executing user
workloads.
Only supported on GAUDI at this stage.
-What: /sys/kernel/debug/habanalabs/hl<n>/device
+What: /sys/kernel/debug/accel/<parent_device>/device
Date: Jan 2019
KernelVersion: 5.1
Contact: ogabbay@kernel.org
@@ -108,7 +91,14 @@ Description: Enables the root user to set the device to specific state.
Valid values are "disable", "enable", "suspend", "resume".
User can read this property to see the valid values
-What: /sys/kernel/debug/habanalabs/hl<n>/dma_size
+What: /sys/kernel/debug/accel/<parent_device>/device_release_watchdog_timeout
+Date: Oct 2022
+KernelVersion: 6.2
+Contact: ttayar@habana.ai
+Description: The watchdog timeout value in seconds for a device release upon
+ certain error cases, after which the device is reset.
+
+What: /sys/kernel/debug/accel/<parent_device>/dma_size
Date: Apr 2021
KernelVersion: 5.13
Contact: ogabbay@kernel.org
@@ -118,7 +108,16 @@ Description: Specify the size of the DMA transaction when using DMA to read
When the write is finished, the user can read the "data_dma"
blob
-What: /sys/kernel/debug/habanalabs/hl<n>/dump_security_violations
+What: /sys/kernel/debug/accel/<parent_device>/dump_razwi_events
+Date: Aug 2022
+KernelVersion: 5.20
+Contact: fkassabri@habana.ai
+Description: Dumps all razwi events to dmesg if exist.
+ After reading the status register of an existing event
+ the routine will clear the status register.
+ Usage: cat dump_razwi_events
+
+What: /sys/kernel/debug/accel/<parent_device>/dump_security_violations
Date: Jan 2021
KernelVersion: 5.12
Contact: ogabbay@kernel.org
@@ -126,68 +125,91 @@ Description: Dumps all security violations to dmesg. This will also ack
all security violations meanings those violations will not be
dumped next time user calls this API
-What: /sys/kernel/debug/habanalabs/hl<n>/engines
+What: /sys/kernel/debug/accel/<parent_device>/engines
Date: Jul 2019
KernelVersion: 5.3
Contact: ogabbay@kernel.org
Description: Displays the status registers values of the device engines and
their derived idle status
-What: /sys/kernel/debug/habanalabs/hl<n>/i2c_addr
+What: /sys/kernel/debug/accel/<parent_device>/i2c_addr
Date: Jan 2019
KernelVersion: 5.1
Contact: ogabbay@kernel.org
Description: Sets I2C device address for I2C transaction that is generated
- by the device's CPU
+ by the device's CPU, Not available when device is loaded with secured
+ firmware
-What: /sys/kernel/debug/habanalabs/hl<n>/i2c_bus
+What: /sys/kernel/debug/accel/<parent_device>/i2c_bus
Date: Jan 2019
KernelVersion: 5.1
Contact: ogabbay@kernel.org
Description: Sets I2C bus address for I2C transaction that is generated by
- the device's CPU
+ the device's CPU, Not available when device is loaded with secured
+ firmware
-What: /sys/kernel/debug/habanalabs/hl<n>/i2c_data
+What: /sys/kernel/debug/accel/<parent_device>/i2c_data
Date: Jan 2019
KernelVersion: 5.1
Contact: ogabbay@kernel.org
Description: Triggers an I2C transaction that is generated by the device's
CPU. Writing to this file generates a write transaction while
- reading from the file generates a read transaction
+ reading from the file generates a read transaction, Not available
+ when device is loaded with secured firmware
-What: /sys/kernel/debug/habanalabs/hl<n>/i2c_len
+What: /sys/kernel/debug/accel/<parent_device>/i2c_len
Date: Dec 2021
KernelVersion: 5.17
Contact: obitton@habana.ai
Description: Sets I2C length in bytes for I2C transaction that is generated by
- the device's CPU
+ the device's CPU, Not available when device is loaded with secured
+ firmware
-What: /sys/kernel/debug/habanalabs/hl<n>/i2c_reg
+What: /sys/kernel/debug/accel/<parent_device>/i2c_reg
Date: Jan 2019
KernelVersion: 5.1
Contact: ogabbay@kernel.org
Description: Sets I2C register id for I2C transaction that is generated by
- the device's CPU
+ the device's CPU, Not available when device is loaded with secured
+ firmware
-What: /sys/kernel/debug/habanalabs/hl<n>/led0
+What: /sys/kernel/debug/accel/<parent_device>/led0
Date: Jan 2019
KernelVersion: 5.1
Contact: ogabbay@kernel.org
-Description: Sets the state of the first S/W led on the device
+Description: Sets the state of the first S/W led on the device, Not available
+ when device is loaded with secured firmware
-What: /sys/kernel/debug/habanalabs/hl<n>/led1
+What: /sys/kernel/debug/accel/<parent_device>/led1
Date: Jan 2019
KernelVersion: 5.1
Contact: ogabbay@kernel.org
-Description: Sets the state of the second S/W led on the device
+Description: Sets the state of the second S/W led on the device, Not available
+ when device is loaded with secured firmware
-What: /sys/kernel/debug/habanalabs/hl<n>/led2
+What: /sys/kernel/debug/accel/<parent_device>/led2
Date: Jan 2019
KernelVersion: 5.1
Contact: ogabbay@kernel.org
-Description: Sets the state of the third S/W led on the device
-
-What: /sys/kernel/debug/habanalabs/hl<n>/mmu
+Description: Sets the state of the third S/W led on the device, Not available
+ when device is loaded with secured firmware
+
+What: /sys/kernel/debug/accel/<parent_device>/memory_scrub
+Date: May 2022
+KernelVersion: 5.19
+Contact: dhirschfeld@habana.ai
+Description: Allows the root user to scrub the dram memory. The scrubbing
+ value can be set using the debugfs file memory_scrub_val.
+
+What: /sys/kernel/debug/accel/<parent_device>/memory_scrub_val
+Date: May 2022
+KernelVersion: 5.19
+Contact: dhirschfeld@habana.ai
+Description: The value to which the dram will be set to when the user
+ scrubs the dram using 'memory_scrub' debugfs file and
+ the scrubbing value when using module param 'memory_scrub'
+
+What: /sys/kernel/debug/accel/<parent_device>/mmu
Date: Jan 2019
KernelVersion: 5.1
Contact: ogabbay@kernel.org
@@ -195,26 +217,56 @@ Description: Displays the hop values and physical address for a given ASID
and virtual address. The user should write the ASID and VA into
the file and then read the file to get the result.
e.g. to display info about VA 0x1000 for ASID 1 you need to do:
- echo "1 0x1000" > /sys/kernel/debug/habanalabs/hl0/mmu
+ echo "1 0x1000" > /sys/kernel/debug/accel/<parent_device>/mmu
-What: /sys/kernel/debug/habanalabs/hl<n>/mmu_error
+What: /sys/kernel/debug/accel/<parent_device>/mmu_error
Date: Mar 2021
KernelVersion: 5.12
Contact: fkassabri@habana.ai
Description: Check and display page fault or access violation mmu errors for
all MMUs specified in mmu_cap_mask.
e.g. to display error info for MMU hw cap bit 9, you need to do:
- echo "0x200" > /sys/kernel/debug/habanalabs/hl0/mmu_error
- cat /sys/kernel/debug/habanalabs/hl0/mmu_error
+ echo "0x200" > /sys/kernel/debug/accel/<parent_device>/mmu_error
+ cat /sys/kernel/debug/accel/<parent_device>/mmu_error
+
+What: /sys/kernel/debug/accel/<parent_device>/monitor_dump
+Date: Mar 2022
+KernelVersion: 5.19
+Contact: osharabi@habana.ai
+Description: Allows the root user to dump monitors status from the device's
+ protected config space.
+ This property is a binary blob that contains the result of the
+ monitors registers dump.
+ This custom interface is needed (instead of using the generic
+ Linux user-space PCI mapping) because this space is protected
+ and cannot be accessed using PCI read.
+ This interface doesn't support concurrency in the same device.
+ Only supported on GAUDI.
+
+What: /sys/kernel/debug/accel/<parent_device>/monitor_dump_trig
+Date: Mar 2022
+KernelVersion: 5.19
+Contact: osharabi@habana.ai
+Description: Triggers dump of monitor data. The value to trigger the operation
+ must be 1. Triggering the monitor dump operation initiates dump of
+ current registers values of all monitors.
+ When the write is finished, the user can read the "monitor_dump"
+ blob
-What: /sys/kernel/debug/habanalabs/hl<n>/set_power_state
+What: /sys/kernel/debug/accel/<parent_device>/server_type
+Date: Feb 2024
+KernelVersion: 6.11
+Contact: trisin@habana.ai
+Description: Exposes the device's server type, maps to enum hl_server_type.
+
+What: /sys/kernel/debug/accel/<parent_device>/set_power_state
Date: Jan 2019
KernelVersion: 5.1
Contact: ogabbay@kernel.org
Description: Sets the PCI power state. Valid values are "1" for D0 and "2"
for D3Hot
-What: /sys/kernel/debug/habanalabs/hl<n>/skip_reset_on_timeout
+What: /sys/kernel/debug/accel/<parent_device>/skip_reset_on_timeout
Date: Jun 2021
KernelVersion: 5.13
Contact: ynudelman@habana.ai
@@ -222,7 +274,7 @@ Description: Sets the skip reset on timeout option for the device. Value of
"0" means device will be reset in case some CS has timed out,
otherwise it will not be reset.
-What: /sys/kernel/debug/habanalabs/hl<n>/state_dump
+What: /sys/kernel/debug/accel/<parent_device>/state_dump
Date: Oct 2021
KernelVersion: 5.15
Contact: ynudelman@habana.ai
@@ -233,36 +285,37 @@ Description: Gets the state dump occurring on a CS timeout or failure.
Writing an integer X discards X state dumps, so that the
next read would return X+1-st newest state dump.
-What: /sys/kernel/debug/habanalabs/hl<n>/stop_on_err
+What: /sys/kernel/debug/accel/<parent_device>/stop_on_err
Date: Mar 2020
KernelVersion: 5.6
Contact: ogabbay@kernel.org
Description: Sets the stop-on_error option for the device engines. Value of
"0" is for disable, otherwise enable.
+ Relevant only for GOYA and GAUDI.
-What: /sys/kernel/debug/habanalabs/hl<n>/timeout_locked
+What: /sys/kernel/debug/accel/<parent_device>/timeout_locked
Date: Sep 2021
KernelVersion: 5.16
Contact: obitton@habana.ai
Description: Sets the command submission timeout value in seconds.
-What: /sys/kernel/debug/habanalabs/hl<n>/userptr
+What: /sys/kernel/debug/accel/<parent_device>/userptr
Date: Jan 2019
KernelVersion: 5.1
Contact: ogabbay@kernel.org
-Description: Displays a list with information about the currently user
+Description: Displays a list with information about the current user
pointers (user virtual addresses) that are pinned and mapped
to DMA addresses
-What: /sys/kernel/debug/habanalabs/hl<n>/userptr_lookup
-Date: Aug 2021
+What: /sys/kernel/debug/accel/<parent_device>/userptr_lookup
+Date: Oct 2021
KernelVersion: 5.15
Contact: ogabbay@kernel.org
Description: Allows to search for specific user pointers (user virtual
addresses) that are pinned and mapped to DMA addresses, and see
their resolution to the specific dma address.
-What: /sys/kernel/debug/habanalabs/hl<n>/vm
+What: /sys/kernel/debug/accel/<parent_device>/vm
Date: Jan 2019
KernelVersion: 5.1
Contact: ogabbay@kernel.org
diff --git a/Documentation/ABI/testing/debugfs-driver-qat b/Documentation/ABI/testing/debugfs-driver-qat
new file mode 100644
index 000000000000..3f1efbbad6ca
--- /dev/null
+++ b/Documentation/ABI/testing/debugfs-driver-qat
@@ -0,0 +1,109 @@
+What: /sys/kernel/debug/qat_<device>_<BDF>/fw_counters
+Date: November 2023
+KernelVersion: 6.6
+Contact: qat-linux@intel.com
+Description: (RO) Read returns the number of requests sent to the FW and the number of responses
+ received from the FW for each Acceleration Engine
+ Reported firmware counters::
+
+ <N>: Number of requests sent from Acceleration Engine N to FW and responses
+ Acceleration Engine N received from FW
+
+What: /sys/kernel/debug/qat_<device>_<BDF>/heartbeat/config
+Date: November 2023
+KernelVersion: 6.6
+Contact: qat-linux@intel.com
+Description: (RW) Read returns value of the Heartbeat update period.
+ Write to the file changes this period value.
+
+ This period should reflect planned polling interval of device
+ health status. High frequency Heartbeat monitoring wastes CPU cycles
+ but minimizes the customer’s system downtime. Also, if there are
+ large service requests that take some time to complete, high frequency
+ Heartbeat monitoring could result in false reports of unresponsiveness
+ and in those cases, period needs to be increased.
+
+ This parameter is effective only for c3xxx, c62x, dh895xcc devices.
+ 4xxx has this value internally fixed to 200ms.
+
+ Default value is set to 500. Minimal allowed value is 200.
+ All values are expressed in milliseconds.
+
+What: /sys/kernel/debug/qat_<device>_<BDF>/heartbeat/queries_failed
+Date: November 2023
+KernelVersion: 6.6
+Contact: qat-linux@intel.com
+Description: (RO) Read returns the number of times the device became unresponsive.
+
+ Attribute returns value of the counter which is incremented when
+ status query results negative.
+
+What: /sys/kernel/debug/qat_<device>_<BDF>/heartbeat/queries_sent
+Date: November 2023
+KernelVersion: 6.6
+Contact: qat-linux@intel.com
+Description: (RO) Read returns the number of times the control process checked
+ if the device is responsive.
+
+ Attribute returns value of the counter which is incremented on
+ every status query.
+
+What: /sys/kernel/debug/qat_<device>_<BDF>/heartbeat/status
+Date: November 2023
+KernelVersion: 6.6
+Contact: qat-linux@intel.com
+Description: (RO) Read returns the device health status.
+
+ Returns 0 when device is healthy or -1 when is unresponsive
+ or the query failed to send.
+
+ The driver does not monitor for Heartbeat. It is left for a user
+ to poll the status periodically.
+
+What: /sys/kernel/debug/qat_<device>_<BDF>/pm_status
+Date: January 2024
+KernelVersion: 6.7
+Contact: qat-linux@intel.com
+Description: (RO) Read returns power management information specific to the
+ QAT device.
+
+ This attribute is only available for qat_4xxx and qat_6xxx devices.
+
+What: /sys/kernel/debug/qat_<device>_<BDF>/cnv_errors
+Date: January 2024
+KernelVersion: 6.7
+Contact: qat-linux@intel.com
+Description: (RO) Read returns, for each Acceleration Engine (AE), the number
+ of errors and the type of the last error detected by the device
+ when performing verified compression.
+ Reported counters::
+
+ <N>: Number of Compress and Verify (CnV) errors and type
+ of the last CnV error detected by Acceleration
+ Engine N.
+
+What: /sys/kernel/debug/qat_<device>_<BDF>/heartbeat/inject_error
+Date: March 2024
+KernelVersion: 6.8
+Contact: qat-linux@intel.com
+Description: (WO) Write to inject an error that simulates an heartbeat
+ failure. This is to be used for testing purposes.
+
+ After writing this file, the driver stops arbitration on a
+ random engine and disables the fetching of heartbeat counters.
+ If a workload is running on the device, a job submitted to the
+ accelerator might not get a response and a read of the
+ `heartbeat/status` attribute might report -1, i.e. device
+ unresponsive.
+ The error is unrecoverable thus the device must be restarted to
+ restore its functionality.
+
+ This attribute is available only when the kernel is built with
+ CONFIG_CRYPTO_DEV_QAT_ERROR_INJECTION=y.
+
+ A write of 1 enables error injection.
+
+ The following example shows how to enable error injection::
+
+ # cd /sys/kernel/debug/qat_<device>_<BDF>
+ # echo 1 > heartbeat/inject_error
diff --git a/Documentation/ABI/testing/debugfs-driver-qat_telemetry b/Documentation/ABI/testing/debugfs-driver-qat_telemetry
new file mode 100644
index 000000000000..06097ee0f154
--- /dev/null
+++ b/Documentation/ABI/testing/debugfs-driver-qat_telemetry
@@ -0,0 +1,259 @@
+What: /sys/kernel/debug/qat_<device>_<BDF>/telemetry/control
+Date: March 2024
+KernelVersion: 6.8
+Contact: qat-linux@intel.com
+Description: (RW) Enables/disables the reporting of telemetry metrics.
+
+ Allowed values to write:
+ ========================
+ * 0: disable telemetry
+ * 1: enable telemetry
+ * 2, 3, 4: enable telemetry and calculate minimum, maximum
+ and average for each counter over 2, 3 or 4 samples
+
+ Returned values:
+ ================
+ * 1-4: telemetry is enabled and running
+ * 0: telemetry is disabled
+
+ Example.
+
+ Writing '3' to this file starts the collection of
+ telemetry metrics. Samples are collected every second and
+ stored in a circular buffer of size 3. These values are then
+ used to calculate the minimum, maximum and average for each
+ counter. After enabling, counters can be retrieved through
+ the ``device_data`` file::
+
+ echo 3 > /sys/kernel/debug/qat_4xxx_0000:6b:00.0/telemetry/control
+
+ Writing '0' to this file stops the collection of telemetry
+ metrics::
+
+ echo 0 > /sys/kernel/debug/qat_4xxx_0000:6b:00.0/telemetry/control
+
+ This attribute is only available for qat_4xxx and qat_6xxx devices.
+
+What: /sys/kernel/debug/qat_<device>_<BDF>/telemetry/device_data
+Date: March 2024
+KernelVersion: 6.8
+Contact: qat-linux@intel.com
+Description: (RO) Reports device telemetry counters.
+ Reads report metrics about performance and utilization of
+ a QAT device:
+
+ ======================= ========================================
+ Field Description
+ ======================= ========================================
+ sample_cnt number of acquisitions of telemetry data
+ from the device. Reads are performed
+ every 1000 ms.
+ pci_trans_cnt number of PCIe partial transactions
+ max_rd_lat maximum logged read latency [ns] (could
+ be any read operation)
+ rd_lat_acc_avg average read latency [ns]
+ max_gp_lat max get to put latency [ns] (only takes
+ samples for AE0)
+ gp_lat_acc_avg average get to put latency [ns]
+ bw_in PCIe, write bandwidth [Mbps]
+ bw_out PCIe, read bandwidth [Mbps]
+ re_acc_avg average ring empty time [ns]
+ at_page_req_lat_avg Address Translator(AT), average page
+ request latency [ns]
+ at_trans_lat_avg AT, average page translation latency [ns]
+ at_max_tlb_used AT, maximum uTLB used
+ util_cpr<N> utilization of Compression slice N [%]
+ exec_cpr<N> execution count of Compression slice N
+ util_xlt<N> utilization of Translator slice N [%]
+ exec_xlt<N> execution count of Translator slice N
+ util_dcpr<N> utilization of Decompression slice N [%]
+ exec_dcpr<N> execution count of Decompression slice N
+ util_cnv<N> utilization of Compression and verify slice N [%]
+ exec_cnv<N> execution count of Compression and verify slice N
+ util_dcprz<N> utilization of Decompression slice N [%]
+ exec_dcprz<N> execution count of Decompression slice N
+ util_pke<N> utilization of PKE N [%]
+ exec_pke<N> execution count of PKE N
+ util_ucs<N> utilization of UCS slice N [%]
+ exec_ucs<N> execution count of UCS slice N
+ util_wat<N> utilization of Wireless Authentication
+ slice N [%]
+ exec_wat<N> execution count of Wireless Authentication
+ slice N
+ util_wcp<N> utilization of Wireless Cipher slice N [%]
+ exec_wcp<N> execution count of Wireless Cipher slice N
+ util_cph<N> utilization of Cipher slice N [%]
+ exec_cph<N> execution count of Cipher slice N
+ util_ath<N> utilization of Authentication slice N [%]
+ exec_ath<N> execution count of Authentication slice N
+ cmdq_wait_cnv<N> wait time for cmdq N to get Compression and verify
+ slice ownership
+ cmdq_exec_cnv<N> Compression and verify slice execution time while
+ owned by cmdq N
+ cmdq_drain_cnv<N> time taken for cmdq N to release Compression and
+ verify slice ownership
+ cmdq_wait_dcprz<N> wait time for cmdq N to get Decompression
+ slice N ownership
+ cmdq_exec_dcprz<N> Decompression slice execution time while
+ owned by cmdq N
+ cmdq_drain_dcprz<N> time taken for cmdq N to release Decompression
+ slice ownership
+ cmdq_wait_pke<N> wait time for cmdq N to get PKE slice ownership
+ cmdq_exec_pke<N> PKE slice execution time while owned by cmdq N
+ cmdq_drain_pke<N> time taken for cmdq N to release PKE slice
+ ownership
+ cmdq_wait_ucs<N> wait time for cmdq N to get UCS slice ownership
+ cmdq_exec_ucs<N> UCS slice execution time while owned by cmdq N
+ cmdq_drain_ucs<N> time taken for cmdq N to release UCS slice
+ ownership
+ cmdq_wait_ath<N> wait time for cmdq N to get Authentication slice
+ ownership
+ cmdq_exec_ath<N> Authentication slice execution time while owned
+ by cmdq N
+ cmdq_drain_ath<N> time taken for cmdq N to release Authentication
+ slice ownership
+ ======================= ========================================
+
+ The telemetry report file can be read with the following command::
+
+ cat /sys/kernel/debug/qat_4xxx_0000:6b:00.0/telemetry/device_data
+
+ If ``control`` is set to 1, only the current values of the
+ counters are displayed::
+
+ <counter_name> <current>
+
+ If ``control`` is 2, 3 or 4, counters are displayed in the
+ following format::
+
+ <counter_name> <current> <min> <max> <avg>
+
+ If a device lacks of a specific accelerator, the corresponding
+ attribute is not reported.
+
+ This attribute is only available for qat_4xxx and qat_6xxx devices.
+
+What: /sys/kernel/debug/qat_<device>_<BDF>/telemetry/rp_<A/B/C/D>_data
+Date: March 2024
+KernelVersion: 6.8
+Contact: qat-linux@intel.com
+Description: (RW) Selects up to 4 Ring Pairs (RP) to monitor, one per file,
+ and report telemetry counters related to each.
+
+ Allowed values to write:
+ ========================
+ * 0 to ``<num_rps - 1>``:
+ Ring pair to be monitored. The value of ``num_rps`` can be
+ retrieved through ``/sys/bus/pci/devices/<BDF>/qat/num_rps``.
+ See Documentation/ABI/testing/sysfs-driver-qat.
+
+ Reads report metrics about performance and utilization of
+ the selected RP:
+
+ ======================= ========================================
+ Field Description
+ ======================= ========================================
+ sample_cnt number of acquisitions of telemetry data
+ from the device. Reads are performed
+ every 1000 ms
+ rp_num RP number associated with slot <A/B/C/D>
+ service_type service associated to the RP
+ pci_trans_cnt number of PCIe partial transactions
+ gp_lat_acc_avg average get to put latency [ns]
+ bw_in PCIe, write bandwidth [Mbps]
+ bw_out PCIe, read bandwidth [Mbps]
+ at_glob_devtlb_hit Message descriptor DevTLB hit rate
+ at_glob_devtlb_miss Message descriptor DevTLB miss rate
+ tl_at_payld_devtlb_hit Payload DevTLB hit rate
+ tl_at_payld_devtlb_miss Payload DevTLB miss rate
+ ======================= ========================================
+
+ Example.
+
+ Writing the value '32' to the file ``rp_C_data`` starts the
+ collection of telemetry metrics for ring pair 32::
+
+ echo 32 > /sys/kernel/debug/qat_4xxx_0000:6b:00.0/telemetry/rp_C_data
+
+ Once a ring pair is selected, statistics can be read accessing
+ the file::
+
+ cat /sys/kernel/debug/qat_4xxx_0000:6b:00.0/telemetry/rp_C_data
+
+ If ``control`` is set to 1, only the current values of the
+ counters are displayed::
+
+ <counter_name> <current>
+
+ If ``control`` is 2, 3 or 4, counters are displayed in the
+ following format::
+
+ <counter_name> <current> <min> <max> <avg>
+
+
+ On QAT GEN4 devices there are 64 RPs on a PF, so the allowed
+ values are 0..63. This number is absolute to the device.
+ If Virtual Functions (VF) are used, the ring pair number can
+ be derived from the Bus, Device, Function of the VF:
+
+ ============ ====== ====== ====== ======
+ PCI BDF/VF RP0 RP1 RP2 RP3
+ ============ ====== ====== ====== ======
+ 0000:6b:0.1 RP 0 RP 1 RP 2 RP 3
+ 0000:6b:0.2 RP 4 RP 5 RP 6 RP 7
+ 0000:6b:0.3 RP 8 RP 9 RP 10 RP 11
+ 0000:6b:0.4 RP 12 RP 13 RP 14 RP 15
+ 0000:6b:0.5 RP 16 RP 17 RP 18 RP 19
+ 0000:6b:0.6 RP 20 RP 21 RP 22 RP 23
+ 0000:6b:0.7 RP 24 RP 25 RP 26 RP 27
+ 0000:6b:1.0 RP 28 RP 29 RP 30 RP 31
+ 0000:6b:1.1 RP 32 RP 33 RP 34 RP 35
+ 0000:6b:1.2 RP 36 RP 37 RP 38 RP 39
+ 0000:6b:1.3 RP 40 RP 41 RP 42 RP 43
+ 0000:6b:1.4 RP 44 RP 45 RP 46 RP 47
+ 0000:6b:1.5 RP 48 RP 49 RP 50 RP 51
+ 0000:6b:1.6 RP 52 RP 53 RP 54 RP 55
+ 0000:6b:1.7 RP 56 RP 57 RP 58 RP 59
+ 0000:6b:2.0 RP 60 RP 61 RP 62 RP 63
+ ============ ====== ====== ====== ======
+
+ The mapping is only valid for the BDFs of VFs on the host.
+
+
+ The service provided on a ring-pair varies depending on the
+ configuration. The configuration for a given device can be
+ queried and set using ``cfg_services``.
+ See Documentation/ABI/testing/sysfs-driver-qat for details.
+
+ The following table reports how ring pairs are mapped to VFs
+ on the PF 0000:6b:0.0 configured for `sym;asym` or `asym;sym`:
+
+ =========== ============ =========== ============ ===========
+ PCI BDF/VF RP0/service RP1/service RP2/service RP3/service
+ =========== ============ =========== ============ ===========
+ 0000:6b:0.1 RP 0 asym RP 1 sym RP 2 asym RP 3 sym
+ 0000:6b:0.2 RP 4 asym RP 5 sym RP 6 asym RP 7 sym
+ 0000:6b:0.3 RP 8 asym RP 9 sym RP10 asym RP11 sym
+ ... ... ... ... ...
+ =========== ============ =========== ============ ===========
+
+ All VFs follow the same pattern.
+
+
+ The following table reports how ring pairs are mapped to VFs on
+ the PF 0000:6b:0.0 configured for `dc`:
+
+ =========== ============ =========== ============ ===========
+ PCI BDF/VF RP0/service RP1/service RP2/service RP3/service
+ =========== ============ =========== ============ ===========
+ 0000:6b:0.1 RP 0 dc RP 1 dc RP 2 dc RP 3 dc
+ 0000:6b:0.2 RP 4 dc RP 5 dc RP 6 dc RP 7 dc
+ 0000:6b:0.3 RP 8 dc RP 9 dc RP10 dc RP11 dc
+ ... ... ... ... ...
+ =========== ============ =========== ============ ===========
+
+ The mapping of a RP to a service can be retrieved using
+ ``rp2srv`` from sysfs.
+ See Documentation/ABI/testing/sysfs-driver-qat for details.
+
+ This attribute is only available for qat_4xxx and qat_6xxx devices.
diff --git a/Documentation/ABI/testing/debugfs-dwc-pcie b/Documentation/ABI/testing/debugfs-dwc-pcie
new file mode 100644
index 000000000000..92b76f52a408
--- /dev/null
+++ b/Documentation/ABI/testing/debugfs-dwc-pcie
@@ -0,0 +1,157 @@
+What: /sys/kernel/debug/dwc_pcie_<dev>/rasdes_debug/lane_detect
+Date: February 2025
+Contact: Shradha Todi <shradha.t@samsung.com>
+Description: (RW) Write the lane number to be checked for detection. Read
+ will return whether PHY indicates receiver detection on the
+ selected lane. The default selected lane is Lane0.
+
+What: /sys/kernel/debug/dwc_pcie_<dev>/rasdes_debug/rx_valid
+Date: February 2025
+Contact: Shradha Todi <shradha.t@samsung.com>
+Description: (RW) Write the lane number to be checked as valid or invalid.
+ Read will return the status of PIPE RXVALID signal of the
+ selected lane. The default selected lane is Lane0.
+
+What: /sys/kernel/debug/dwc_pcie_<dev>/rasdes_err_inj/<error>
+Date: February 2025
+Contact: Shradha Todi <shradha.t@samsung.com>
+Description: The "rasdes_err_inj" is a directory which can be used to inject
+ errors into the system. The possible errors that can be injected
+ are:
+
+ 1) tx_lcrc - TLP LCRC error injection TX Path
+ 2) b16_crc_dllp - 16b CRC error injection of ACK/NAK DLLP
+ 3) b16_crc_upd_fc - 16b CRC error injection of Update-FC DLLP
+ 4) tx_ecrc - TLP ECRC error injection TX Path
+ 5) fcrc_tlp - TLP's FCRC error injection TX Path
+ 6) parity_tsos - Parity error of TSOS
+ 7) parity_skpos - Parity error on SKPOS
+ 8) rx_lcrc - LCRC error injection RX Path
+ 9) rx_ecrc - ECRC error injection RX Path
+ 10) tlp_err_seq - TLPs SEQ# error
+ 11) ack_nak_dllp_seq - DLLPS ACK/NAK SEQ# error
+ 12) ack_nak_dllp - ACK/NAK DLLPs transmission block
+ 13) upd_fc_dllp - UpdateFC DLLPs transmission block
+ 14) nak_dllp - Always transmission for NAK DLLP
+ 15) inv_sync_hdr_sym - Invert SYNC header
+ 16) com_pad_ts1 - COM/PAD TS1 order set
+ 17) com_pad_ts2 - COM/PAD TS2 order set
+ 18) com_fts - COM/FTS FTS order set
+ 19) com_idl - COM/IDL E-idle order set
+ 20) end_edb - END/EDB symbol
+ 21) stp_sdp - STP/SDP symbol
+ 22) com_skp - COM/SKP SKP order set
+ 23) posted_tlp_hdr - Posted TLP Header credit value control
+ 24) non_post_tlp_hdr - Non-Posted TLP Header credit value control
+ 25) cmpl_tlp_hdr - Completion TLP Header credit value control
+ 26) posted_tlp_data - Posted TLP Data credit value control
+ 27) non_post_tlp_data - Non-Posted TLP Data credit value control
+ 28) cmpl_tlp_data - Completion TLP Data credit value control
+ 29) duplicate_tlp - Generates duplicate TLPs
+ 30) nullified_tlp - Generates Nullified TLPs
+
+ (WO) Write to the attribute will prepare controller to inject
+ the respective error in the next transmission of data.
+
+ Parameter required to write will change in the following ways:
+
+ - Errors 9 and 10 are sequence errors. The write command:
+
+ echo <count> <diff> > /sys/kernel/debug/dwc_pcie_<dev>/rasdes_err_inj/<error>
+
+ <count>
+ Number of errors to be injected
+ <diff>
+ The difference to add or subtract from natural
+ sequence number to generate sequence error.
+ Allowed range from -4095 to 4095
+
+ - Errors 23 to 28 are credit value error insertions. The write
+ command:
+
+ echo <count> <diff> <vc> > /sys/kernel/debug/dwc_pcie_<dev>/rasdes_err_inj/<error>
+
+ <count>
+ Number of errors to be injected
+ <diff>
+ The difference to add or subtract from UpdateFC
+ credit value. Allowed range from -4095 to 4095
+ <vc>
+ Target VC number
+
+ - All other errors. The write command:
+
+ echo <count> > /sys/kernel/debug/dwc_pcie_<dev>/rasdes_err_inj/<error>
+
+ <count>
+ Number of errors to be injected
+
+What: /sys/kernel/debug/dwc_pcie_<dev>/rasdes_event_counters/<event>/counter_enable
+Date: February 2025
+Contact: Shradha Todi <shradha.t@samsung.com>
+Description: The "rasdes_event_counters" is the directory which can be used
+ to collect statistical data about the number of times a certain
+ event has occurred in the controller. The list of possible
+ events are:
+
+ 1) EBUF Overflow
+ 2) EBUF Underrun
+ 3) Decode Error
+ 4) Running Disparity Error
+ 5) SKP OS Parity Error
+ 6) SYNC Header Error
+ 7) Rx Valid De-assertion
+ 8) CTL SKP OS Parity Error
+ 9) 1st Retimer Parity Error
+ 10) 2nd Retimer Parity Error
+ 11) Margin CRC and Parity Error
+ 12) Detect EI Infer
+ 13) Receiver Error
+ 14) RX Recovery Req
+ 15) N_FTS Timeout
+ 16) Framing Error
+ 17) Deskew Error
+ 18) Framing Error In L0
+ 19) Deskew Uncompleted Error
+ 20) Bad TLP
+ 21) LCRC Error
+ 22) Bad DLLP
+ 23) Replay Number Rollover
+ 24) Replay Timeout
+ 25) Rx Nak DLLP
+ 26) Tx Nak DLLP
+ 27) Retry TLP
+ 28) FC Timeout
+ 29) Poisoned TLP
+ 30) ECRC Error
+ 31) Unsupported Request
+ 32) Completer Abort
+ 33) Completion Timeout
+ 34) EBUF SKP Add
+ 35) EBUF SKP Del
+
+ (RW) Write 1 to enable the event counter and write 0 to disable
+ the event counter. Read will return whether the counter is
+ currently enabled or disabled. Counter is disabled by default.
+
+What: /sys/kernel/debug/dwc_pcie_<dev>/rasdes_event_counters/<event>/counter_value
+Date: February 2025
+Contact: Shradha Todi <shradha.t@samsung.com>
+Description: (RO) Read will return the current value of the event counter.
+ To reset the counter, counter should be disabled first and then
+ enabled back using the "counter_enable" attribute.
+
+What: /sys/kernel/debug/dwc_pcie_<dev>/rasdes_event_counters/<event>/lane_select
+Date: February 2025
+Contact: Shradha Todi <shradha.t@samsung.com>
+Description: (RW) Some lanes in the event list are lane specific events.
+ These include events from 1 to 11, as well as, 34 and 35. Write
+ the lane number for which you wish the counter to be enabled,
+ disabled, or value dumped. Read will return the current
+ selected lane number. Lane0 is selected by default.
+
+What: /sys/kernel/debug/dwc_pcie_<dev>/ltssm_status
+Date: February 2025
+Contact: Hans Zhang <18255117159@163.com>
+Description: (RO) Read will return the current PCIe LTSSM state in both
+ string and raw value.
diff --git a/Documentation/ABI/testing/debugfs-hisi-hpre b/Documentation/ABI/testing/debugfs-hisi-hpre
index b4be5f1db4b7..29fb7d5ffc69 100644
--- a/Documentation/ABI/testing/debugfs-hisi-hpre
+++ b/Documentation/ABI/testing/debugfs-hisi-hpre
@@ -1,140 +1,193 @@
-What: /sys/kernel/debug/hisi_hpre/<bdf>/cluster[0-3]/regs
-Date: Sep 2019
-Contact: linux-crypto@vger.kernel.org
-Description: Dump debug registers from the HPRE cluster.
+What: /sys/kernel/debug/hisi_hpre/<bdf>/cluster[0-3]/regs
+Date: Sep 2019
+Contact: linux-crypto@vger.kernel.org
+Description: Dump debug registers from the HPRE cluster.
Only available for PF.
-What: /sys/kernel/debug/hisi_hpre/<bdf>/cluster[0-3]/cluster_ctrl
-Date: Sep 2019
-Contact: linux-crypto@vger.kernel.org
-Description: Write the HPRE core selection in the cluster into this file,
+What: /sys/kernel/debug/hisi_hpre/<bdf>/cluster[0-3]/cluster_ctrl
+Date: Sep 2019
+Contact: linux-crypto@vger.kernel.org
+Description: Write the HPRE core selection in the cluster into this file,
and then we can read the debug information of the core.
Only available for PF.
-What: /sys/kernel/debug/hisi_hpre/<bdf>/rdclr_en
-Date: Sep 2019
-Contact: linux-crypto@vger.kernel.org
-Description: HPRE cores debug registers read clear control. 1 means enable
+What: /sys/kernel/debug/hisi_hpre/<bdf>/rdclr_en
+Date: Sep 2019
+Contact: linux-crypto@vger.kernel.org
+Description: HPRE cores debug registers read clear control. 1 means enable
register read clear, otherwise 0. Writing to this file has no
functional effect, only enable or disable counters clear after
reading of these registers.
Only available for PF.
-What: /sys/kernel/debug/hisi_hpre/<bdf>/current_qm
-Date: Sep 2019
-Contact: linux-crypto@vger.kernel.org
-Description: One HPRE controller has one PF and multiple VFs, each function
+What: /sys/kernel/debug/hisi_hpre/<bdf>/current_qm
+Date: Sep 2019
+Contact: linux-crypto@vger.kernel.org
+Description: One HPRE controller has one PF and multiple VFs, each function
has a QM. Select the QM which below qm refers to.
Only available for PF.
-What: /sys/kernel/debug/hisi_hpre/<bdf>/regs
-Date: Sep 2019
-Contact: linux-crypto@vger.kernel.org
-Description: Dump debug registers from the HPRE.
+What: /sys/kernel/debug/hisi_hpre/<bdf>/alg_qos
+Date: Jun 2021
+Contact: linux-crypto@vger.kernel.org
+Description: The <bdf> is related the function for PF and VF.
+ HPRE driver supports to configure each function's QoS, the driver
+ supports to write <bdf> value to alg_qos in the host. Such as
+ "echo <bdf> value > alg_qos". The qos value is 1~1000, means
+ 1/1000~1000/1000 of total QoS. The driver reading alg_qos to
+ get related QoS in the host and VM, Such as "cat alg_qos".
+
+What: /sys/kernel/debug/hisi_hpre/<bdf>/regs
+Date: Sep 2019
+Contact: linux-crypto@vger.kernel.org
+Description: Dump debug registers from the HPRE.
Only available for PF.
-What: /sys/kernel/debug/hisi_hpre/<bdf>/qm/regs
-Date: Sep 2019
-Contact: linux-crypto@vger.kernel.org
-Description: Dump debug registers from the QM.
+What: /sys/kernel/debug/hisi_hpre/<bdf>/qm/regs
+Date: Sep 2019
+Contact: linux-crypto@vger.kernel.org
+Description: Dump debug registers from the QM.
Available for PF and VF in host. VF in guest currently only
has one debug register.
-What: /sys/kernel/debug/hisi_hpre/<bdf>/qm/current_q
-Date: Sep 2019
-Contact: linux-crypto@vger.kernel.org
-Description: One QM may contain multiple queues. Select specific queue to
+What: /sys/kernel/debug/hisi_hpre/<bdf>/qm/current_q
+Date: Sep 2019
+Contact: linux-crypto@vger.kernel.org
+Description: One QM may contain multiple queues. Select specific queue to
show its debug registers in above regs.
Only available for PF.
-What: /sys/kernel/debug/hisi_hpre/<bdf>/qm/clear_enable
-Date: Sep 2019
-Contact: linux-crypto@vger.kernel.org
-Description: QM debug registers(regs) read clear control. 1 means enable
+What: /sys/kernel/debug/hisi_hpre/<bdf>/qm/clear_enable
+Date: Sep 2019
+Contact: linux-crypto@vger.kernel.org
+Description: QM debug registers(regs) read clear control. 1 means enable
register read clear, otherwise 0.
Writing to this file has no functional effect, only enable or
disable counters clear after reading of these registers.
Only available for PF.
-What: /sys/kernel/debug/hisi_hpre/<bdf>/qm/err_irq
-Date: Apr 2020
-Contact: linux-crypto@vger.kernel.org
-Description: Dump the number of invalid interrupts for
+What: /sys/kernel/debug/hisi_hpre/<bdf>/qm/err_irq
+Date: Apr 2020
+Contact: linux-crypto@vger.kernel.org
+Description: Dump the number of invalid interrupts for
QM task completion.
Available for both PF and VF, and take no other effect on HPRE.
-What: /sys/kernel/debug/hisi_hpre/<bdf>/qm/aeq_irq
-Date: Apr 2020
-Contact: linux-crypto@vger.kernel.org
-Description: Dump the number of QM async event queue interrupts.
+What: /sys/kernel/debug/hisi_hpre/<bdf>/qm/aeq_irq
+Date: Apr 2020
+Contact: linux-crypto@vger.kernel.org
+Description: Dump the number of QM async event queue interrupts.
Available for both PF and VF, and take no other effect on HPRE.
-What: /sys/kernel/debug/hisi_hpre/<bdf>/qm/abnormal_irq
-Date: Apr 2020
-Contact: linux-crypto@vger.kernel.org
-Description: Dump the number of interrupts for QM abnormal event.
+What: /sys/kernel/debug/hisi_hpre/<bdf>/qm/abnormal_irq
+Date: Apr 2020
+Contact: linux-crypto@vger.kernel.org
+Description: Dump the number of interrupts for QM abnormal event.
Available for both PF and VF, and take no other effect on HPRE.
-What: /sys/kernel/debug/hisi_hpre/<bdf>/qm/create_qp_err
-Date: Apr 2020
-Contact: linux-crypto@vger.kernel.org
-Description: Dump the number of queue allocation errors.
+What: /sys/kernel/debug/hisi_hpre/<bdf>/qm/create_qp_err
+Date: Apr 2020
+Contact: linux-crypto@vger.kernel.org
+Description: Dump the number of queue allocation errors.
Available for both PF and VF, and take no other effect on HPRE.
-What: /sys/kernel/debug/hisi_hpre/<bdf>/qm/mb_err
-Date: Apr 2020
-Contact: linux-crypto@vger.kernel.org
-Description: Dump the number of failed QM mailbox commands.
+What: /sys/kernel/debug/hisi_hpre/<bdf>/qm/mb_err
+Date: Apr 2020
+Contact: linux-crypto@vger.kernel.org
+Description: Dump the number of failed QM mailbox commands.
Available for both PF and VF, and take no other effect on HPRE.
-What: /sys/kernel/debug/hisi_hpre/<bdf>/qm/status
-Date: Apr 2020
-Contact: linux-crypto@vger.kernel.org
-Description: Dump the status of the QM.
- Four states: initiated, started, stopped and closed.
+What: /sys/kernel/debug/hisi_hpre/<bdf>/qm/status
+Date: Apr 2020
+Contact: linux-crypto@vger.kernel.org
+Description: Dump the status of the QM.
+ Two states: work, stop.
Available for both PF and VF, and take no other effect on HPRE.
-What: /sys/kernel/debug/hisi_hpre/<bdf>/hpre_dfx/send_cnt
-Date: Apr 2020
-Contact: linux-crypto@vger.kernel.org
-Description: Dump the total number of sent requests.
+What: /sys/kernel/debug/hisi_hpre/<bdf>/qm/diff_regs
+Date: Mar 2022
+Contact: linux-crypto@vger.kernel.org
+Description: QM debug registers(regs) read hardware register value. This
+ node is used to show the change of the qm register values. This
+ node can be help users to check the change of register values.
+
+What: /sys/kernel/debug/hisi_hpre/<bdf>/qm/qm_state
+Date: Jan 2024
+Contact: linux-crypto@vger.kernel.org
+Description: Dump the state of the device.
+ 0: busy, 1: idle.
+ Only available for PF, and take no other effect on HPRE.
+
+What: /sys/kernel/debug/hisi_hpre/<bdf>/qm/dev_timeout
+Date: Feb 2024
+Contact: linux-crypto@vger.kernel.org
+Description: Set the wait time when stop queue fails. Available for both PF
+ and VF, and take no other effect on HPRE.
+ 0: not wait(default), others value: wait dev_timeout * 20 microsecond.
+
+What: /sys/kernel/debug/hisi_hpre/<bdf>/qm/dev_state
+Date: Feb 2024
+Contact: linux-crypto@vger.kernel.org
+Description: Dump the stop queue status of the QM. The default value is 0,
+ if dev_timeout is set, when stop queue fails, the dev_state
+ will return non-zero value. Available for both PF and VF,
+ and take no other effect on HPRE.
+
+What: /sys/kernel/debug/hisi_hpre/<bdf>/hpre_dfx/diff_regs
+Date: Mar 2022
+Contact: linux-crypto@vger.kernel.org
+Description: HPRE debug registers(regs) read hardware register value. This
+ node is used to show the change of the register values. This
+ node can be help users to check the change of register values.
+
+What: /sys/kernel/debug/hisi_hpre/<bdf>/hpre_dfx/send_cnt
+Date: Apr 2020
+Contact: linux-crypto@vger.kernel.org
+Description: Dump the total number of sent requests.
Available for both PF and VF, and take no other effect on HPRE.
-What: /sys/kernel/debug/hisi_hpre/<bdf>/hpre_dfx/recv_cnt
-Date: Apr 2020
-Contact: linux-crypto@vger.kernel.org
-Description: Dump the total number of received requests.
+What: /sys/kernel/debug/hisi_hpre/<bdf>/hpre_dfx/recv_cnt
+Date: Apr 2020
+Contact: linux-crypto@vger.kernel.org
+Description: Dump the total number of received requests.
Available for both PF and VF, and take no other effect on HPRE.
-What: /sys/kernel/debug/hisi_hpre/<bdf>/hpre_dfx/send_busy_cnt
-Date: Apr 2020
-Contact: linux-crypto@vger.kernel.org
-Description: Dump the total number of requests sent
+What: /sys/kernel/debug/hisi_hpre/<bdf>/hpre_dfx/send_busy_cnt
+Date: Apr 2020
+Contact: linux-crypto@vger.kernel.org
+Description: Dump the total number of requests sent
with returning busy.
Available for both PF and VF, and take no other effect on HPRE.
-What: /sys/kernel/debug/hisi_hpre/<bdf>/hpre_dfx/send_fail_cnt
-Date: Apr 2020
-Contact: linux-crypto@vger.kernel.org
-Description: Dump the total number of completed but error requests.
+What: /sys/kernel/debug/hisi_hpre/<bdf>/hpre_dfx/send_fail_cnt
+Date: Apr 2020
+Contact: linux-crypto@vger.kernel.org
+Description: Dump the total number of completed but error requests.
Available for both PF and VF, and take no other effect on HPRE.
-What: /sys/kernel/debug/hisi_hpre/<bdf>/hpre_dfx/invalid_req_cnt
-Date: Apr 2020
-Contact: linux-crypto@vger.kernel.org
-Description: Dump the total number of invalid requests being received.
+What: /sys/kernel/debug/hisi_hpre/<bdf>/hpre_dfx/invalid_req_cnt
+Date: Apr 2020
+Contact: linux-crypto@vger.kernel.org
+Description: Dump the total number of invalid requests being received.
Available for both PF and VF, and take no other effect on HPRE.
-What: /sys/kernel/debug/hisi_hpre/<bdf>/hpre_dfx/overtime_thrhld
-Date: Apr 2020
-Contact: linux-crypto@vger.kernel.org
-Description: Set the threshold time for counting the request which is
+What: /sys/kernel/debug/hisi_hpre/<bdf>/hpre_dfx/overtime_thrhld
+Date: Apr 2020
+Contact: linux-crypto@vger.kernel.org
+Description: Set the threshold time for counting the request which is
processed longer than the threshold.
0: disable(default), 1: 1 microsecond.
Available for both PF and VF, and take no other effect on HPRE.
-What: /sys/kernel/debug/hisi_hpre/<bdf>/hpre_dfx/over_thrhld_cnt
-Date: Apr 2020
-Contact: linux-crypto@vger.kernel.org
-Description: Dump the total number of time out requests.
+What: /sys/kernel/debug/hisi_hpre/<bdf>/hpre_dfx/over_thrhld_cnt
+Date: Apr 2020
+Contact: linux-crypto@vger.kernel.org
+Description: Dump the total number of time out requests.
Available for both PF and VF, and take no other effect on HPRE.
+
+What: /sys/kernel/debug/hisi_hpre/<bdf>/cap_regs
+Date: Oct 2024
+Contact: linux-crypto@vger.kernel.org
+Description: Dump the values of the qm and hpre capability bit registers and
+ support the query of device specifications to facilitate fault locating.
+ Available for both PF and VF, and take no other effect on HPRE.
diff --git a/Documentation/ABI/testing/debugfs-hisi-migration b/Documentation/ABI/testing/debugfs-hisi-migration
new file mode 100644
index 000000000000..2c01b2d387dd
--- /dev/null
+++ b/Documentation/ABI/testing/debugfs-hisi-migration
@@ -0,0 +1,25 @@
+What: /sys/kernel/debug/vfio/<device>/migration/hisi_acc/dev_data
+Date: Jan 2025
+KernelVersion: 6.13
+Contact: Longfang Liu <liulongfang@huawei.com>
+Description: Read the configuration data and some status data
+ required for device live migration. These data include device
+ status data, queue configuration data, some task configuration
+ data and device attribute data. The output format of the data
+ is defined by the live migration driver.
+
+What: /sys/kernel/debug/vfio/<device>/migration/hisi_acc/migf_data
+Date: Jan 2025
+KernelVersion: 6.13
+Contact: Longfang Liu <liulongfang@huawei.com>
+Description: Read the data from the last completed live migration.
+ This data includes the same device status data as in "dev_data".
+ The migf_data is the dev_data that is migrated.
+
+What: /sys/kernel/debug/vfio/<device>/migration/hisi_acc/cmd_state
+Date: Jan 2025
+KernelVersion: 6.13
+Contact: Longfang Liu <liulongfang@huawei.com>
+Description: Used to obtain the device command sending and receiving
+ channel status. Returns failure or success logs based on the
+ results.
diff --git a/Documentation/ABI/testing/debugfs-hisi-sec b/Documentation/ABI/testing/debugfs-hisi-sec
index 85feb4408e0f..82bf4a0dc7f7 100644
--- a/Documentation/ABI/testing/debugfs-hisi-sec
+++ b/Documentation/ABI/testing/debugfs-hisi-sec
@@ -1,113 +1,166 @@
-What: /sys/kernel/debug/hisi_sec2/<bdf>/clear_enable
-Date: Oct 2019
-Contact: linux-crypto@vger.kernel.org
-Description: Enabling/disabling of clear action after reading
+What: /sys/kernel/debug/hisi_sec2/<bdf>/clear_enable
+Date: Oct 2019
+Contact: linux-crypto@vger.kernel.org
+Description: Enabling/disabling of clear action after reading
the SEC debug registers.
0: disable, 1: enable.
Only available for PF, and take no other effect on SEC.
-What: /sys/kernel/debug/hisi_sec2/<bdf>/current_qm
-Date: Oct 2019
-Contact: linux-crypto@vger.kernel.org
-Description: One SEC controller has one PF and multiple VFs, each function
+What: /sys/kernel/debug/hisi_sec2/<bdf>/current_qm
+Date: Oct 2019
+Contact: linux-crypto@vger.kernel.org
+Description: One SEC controller has one PF and multiple VFs, each function
has a QM. This file can be used to select the QM which below
qm refers to.
Only available for PF.
-What: /sys/kernel/debug/hisi_sec2/<bdf>/qm/qm_regs
-Date: Oct 2019
-Contact: linux-crypto@vger.kernel.org
-Description: Dump of QM related debug registers.
+What: /sys/kernel/debug/hisi_sec2/<bdf>/alg_qos
+Date: Jun 2021
+Contact: linux-crypto@vger.kernel.org
+Description: The <bdf> is related the function for PF and VF.
+ SEC driver supports to configure each function's QoS, the driver
+ supports to write <bdf> value to alg_qos in the host. Such as
+ "echo <bdf> value > alg_qos". The qos value is 1~1000, means
+ 1/1000~1000/1000 of total QoS. The driver reading alg_qos to
+ get related QoS in the host and VM, Such as "cat alg_qos".
+
+What: /sys/kernel/debug/hisi_sec2/<bdf>/qm/qm_regs
+Date: Oct 2019
+Contact: linux-crypto@vger.kernel.org
+Description: Dump of QM related debug registers.
Available for PF and VF in host. VF in guest currently only
has one debug register.
-What: /sys/kernel/debug/hisi_sec2/<bdf>/qm/current_q
-Date: Oct 2019
-Contact: linux-crypto@vger.kernel.org
-Description: One QM of SEC may contain multiple queues. Select specific
+What: /sys/kernel/debug/hisi_sec2/<bdf>/qm/current_q
+Date: Oct 2019
+Contact: linux-crypto@vger.kernel.org
+Description: One QM of SEC may contain multiple queues. Select specific
queue to show its debug registers in above 'regs'.
Only available for PF.
-What: /sys/kernel/debug/hisi_sec2/<bdf>/qm/clear_enable
-Date: Oct 2019
-Contact: linux-crypto@vger.kernel.org
-Description: Enabling/disabling of clear action after reading
+What: /sys/kernel/debug/hisi_sec2/<bdf>/qm/clear_enable
+Date: Oct 2019
+Contact: linux-crypto@vger.kernel.org
+Description: Enabling/disabling of clear action after reading
the SEC's QM debug registers.
0: disable, 1: enable.
Only available for PF, and take no other effect on SEC.
-What: /sys/kernel/debug/hisi_sec2/<bdf>/qm/err_irq
-Date: Apr 2020
-Contact: linux-crypto@vger.kernel.org
-Description: Dump the number of invalid interrupts for
+What: /sys/kernel/debug/hisi_sec2/<bdf>/qm/err_irq
+Date: Apr 2020
+Contact: linux-crypto@vger.kernel.org
+Description: Dump the number of invalid interrupts for
QM task completion.
Available for both PF and VF, and take no other effect on SEC.
-What: /sys/kernel/debug/hisi_sec2/<bdf>/qm/aeq_irq
-Date: Apr 2020
-Contact: linux-crypto@vger.kernel.org
-Description: Dump the number of QM async event queue interrupts.
+What: /sys/kernel/debug/hisi_sec2/<bdf>/qm/aeq_irq
+Date: Apr 2020
+Contact: linux-crypto@vger.kernel.org
+Description: Dump the number of QM async event queue interrupts.
Available for both PF and VF, and take no other effect on SEC.
-What: /sys/kernel/debug/hisi_sec2/<bdf>/qm/abnormal_irq
-Date: Apr 2020
-Contact: linux-crypto@vger.kernel.org
-Description: Dump the number of interrupts for QM abnormal event.
+What: /sys/kernel/debug/hisi_sec2/<bdf>/qm/abnormal_irq
+Date: Apr 2020
+Contact: linux-crypto@vger.kernel.org
+Description: Dump the number of interrupts for QM abnormal event.
Available for both PF and VF, and take no other effect on SEC.
-What: /sys/kernel/debug/hisi_sec2/<bdf>/qm/create_qp_err
-Date: Apr 2020
-Contact: linux-crypto@vger.kernel.org
-Description: Dump the number of queue allocation errors.
+What: /sys/kernel/debug/hisi_sec2/<bdf>/qm/create_qp_err
+Date: Apr 2020
+Contact: linux-crypto@vger.kernel.org
+Description: Dump the number of queue allocation errors.
Available for both PF and VF, and take no other effect on SEC.
-What: /sys/kernel/debug/hisi_sec2/<bdf>/qm/mb_err
-Date: Apr 2020
-Contact: linux-crypto@vger.kernel.org
-Description: Dump the number of failed QM mailbox commands.
+What: /sys/kernel/debug/hisi_sec2/<bdf>/qm/mb_err
+Date: Apr 2020
+Contact: linux-crypto@vger.kernel.org
+Description: Dump the number of failed QM mailbox commands.
Available for both PF and VF, and take no other effect on SEC.
-What: /sys/kernel/debug/hisi_sec2/<bdf>/qm/status
-Date: Apr 2020
-Contact: linux-crypto@vger.kernel.org
-Description: Dump the status of the QM.
- Four states: initiated, started, stopped and closed.
+What: /sys/kernel/debug/hisi_sec2/<bdf>/qm/status
+Date: Apr 2020
+Contact: linux-crypto@vger.kernel.org
+Description: Dump the status of the QM.
+ Two states: work, stop.
Available for both PF and VF, and take no other effect on SEC.
-What: /sys/kernel/debug/hisi_sec2/<bdf>/sec_dfx/send_cnt
-Date: Apr 2020
-Contact: linux-crypto@vger.kernel.org
-Description: Dump the total number of sent requests.
+What: /sys/kernel/debug/hisi_sec2/<bdf>/qm/diff_regs
+Date: Mar 2022
+Contact: linux-crypto@vger.kernel.org
+Description: QM debug registers(regs) read hardware register value. This
+ node is used to show the change of the qm register values. This
+ node can be help users to check the change of register values.
+
+What: /sys/kernel/debug/hisi_sec2/<bdf>/qm/qm_state
+Date: Jan 2024
+Contact: linux-crypto@vger.kernel.org
+Description: Dump the state of the device.
+ 0: busy, 1: idle.
+ Only available for PF, and take no other effect on SEC.
+
+What: /sys/kernel/debug/hisi_sec2/<bdf>/qm/dev_timeout
+Date: Feb 2024
+Contact: linux-crypto@vger.kernel.org
+Description: Set the wait time when stop queue fails. Available for both PF
+ and VF, and take no other effect on SEC.
+ 0: not wait(default), others value: wait dev_timeout * 20 microsecond.
+
+What: /sys/kernel/debug/hisi_sec2/<bdf>/qm/dev_state
+Date: Feb 2024
+Contact: linux-crypto@vger.kernel.org
+Description: Dump the stop queue status of the QM. The default value is 0,
+ if dev_timeout is set, when stop queue fails, the dev_state
+ will return non-zero value. Available for both PF and VF,
+ and take no other effect on SEC.
+
+What: /sys/kernel/debug/hisi_sec2/<bdf>/sec_dfx/diff_regs
+Date: Mar 2022
+Contact: linux-crypto@vger.kernel.org
+Description: SEC debug registers(regs) read hardware register value. This
+ node is used to show the change of the register values. This
+ node can be help users to check the change of register values.
+
+What: /sys/kernel/debug/hisi_sec2/<bdf>/sec_dfx/send_cnt
+Date: Apr 2020
+Contact: linux-crypto@vger.kernel.org
+Description: Dump the total number of sent requests.
Available for both PF and VF, and take no other effect on SEC.
-What: /sys/kernel/debug/hisi_sec2/<bdf>/sec_dfx/recv_cnt
-Date: Apr 2020
-Contact: linux-crypto@vger.kernel.org
-Description: Dump the total number of received requests.
+What: /sys/kernel/debug/hisi_sec2/<bdf>/sec_dfx/recv_cnt
+Date: Apr 2020
+Contact: linux-crypto@vger.kernel.org
+Description: Dump the total number of received requests.
Available for both PF and VF, and take no other effect on SEC.
-What: /sys/kernel/debug/hisi_sec2/<bdf>/sec_dfx/send_busy_cnt
-Date: Apr 2020
-Contact: linux-crypto@vger.kernel.org
-Description: Dump the total number of requests sent with returning busy.
+What: /sys/kernel/debug/hisi_sec2/<bdf>/sec_dfx/send_busy_cnt
+Date: Apr 2020
+Contact: linux-crypto@vger.kernel.org
+Description: Dump the total number of requests sent with returning busy.
Available for both PF and VF, and take no other effect on SEC.
-What: /sys/kernel/debug/hisi_sec2/<bdf>/sec_dfx/err_bd_cnt
-Date: Apr 2020
-Contact: linux-crypto@vger.kernel.org
-Description: Dump the total number of BD type error requests
+What: /sys/kernel/debug/hisi_sec2/<bdf>/sec_dfx/err_bd_cnt
+Date: Apr 2020
+Contact: linux-crypto@vger.kernel.org
+Description: Dump the total number of BD type error requests
to be received.
Available for both PF and VF, and take no other effect on SEC.
-What: /sys/kernel/debug/hisi_sec2/<bdf>/sec_dfx/invalid_req_cnt
-Date: Apr 2020
-Contact: linux-crypto@vger.kernel.org
-Description: Dump the total number of invalid requests being received.
+What: /sys/kernel/debug/hisi_sec2/<bdf>/sec_dfx/invalid_req_cnt
+Date: Apr 2020
+Contact: linux-crypto@vger.kernel.org
+Description: Dump the total number of invalid requests being received.
Available for both PF and VF, and take no other effect on SEC.
-What: /sys/kernel/debug/hisi_sec2/<bdf>/sec_dfx/done_flag_cnt
-Date: Apr 2020
-Contact: linux-crypto@vger.kernel.org
-Description: Dump the total number of completed but marked error requests
+What: /sys/kernel/debug/hisi_sec2/<bdf>/sec_dfx/done_flag_cnt
+Date: Apr 2020
+Contact: linux-crypto@vger.kernel.org
+Description: Dump the total number of completed but marked error requests
to be received.
Available for both PF and VF, and take no other effect on SEC.
+
+What: /sys/kernel/debug/hisi_sec2/<bdf>/cap_regs
+Date: Oct 2024
+Contact: linux-crypto@vger.kernel.org
+Description: Dump the values of the qm and sec capability bit registers and
+ support the query of device specifications to facilitate fault locating.
+ Available for both PF and VF, and take no other effect on SEC.
diff --git a/Documentation/ABI/testing/debugfs-hisi-zip b/Documentation/ABI/testing/debugfs-hisi-zip
index 3034a2bf99ca..0abd65d27e9b 100644
--- a/Documentation/ABI/testing/debugfs-hisi-zip
+++ b/Documentation/ABI/testing/debugfs-hisi-zip
@@ -1,114 +1,167 @@
-What: /sys/kernel/debug/hisi_zip/<bdf>/comp_core[01]/regs
-Date: Nov 2018
-Contact: linux-crypto@vger.kernel.org
-Description: Dump of compression cores related debug registers.
+What: /sys/kernel/debug/hisi_zip/<bdf>/comp_core[01]/regs
+Date: Nov 2018
+Contact: linux-crypto@vger.kernel.org
+Description: Dump of compression cores related debug registers.
Only available for PF.
-What: /sys/kernel/debug/hisi_zip/<bdf>/decomp_core[0-5]/regs
-Date: Nov 2018
-Contact: linux-crypto@vger.kernel.org
-Description: Dump of decompression cores related debug registers.
+What: /sys/kernel/debug/hisi_zip/<bdf>/decomp_core[0-5]/regs
+Date: Nov 2018
+Contact: linux-crypto@vger.kernel.org
+Description: Dump of decompression cores related debug registers.
Only available for PF.
-What: /sys/kernel/debug/hisi_zip/<bdf>/clear_enable
-Date: Nov 2018
-Contact: linux-crypto@vger.kernel.org
-Description: Compression/decompression core debug registers read clear
+What: /sys/kernel/debug/hisi_zip/<bdf>/clear_enable
+Date: Nov 2018
+Contact: linux-crypto@vger.kernel.org
+Description: Compression/decompression core debug registers read clear
control. 1 means enable register read clear, otherwise 0.
Writing to this file has no functional effect, only enable or
disable counters clear after reading of these registers.
Only available for PF.
-What: /sys/kernel/debug/hisi_zip/<bdf>/current_qm
-Date: Nov 2018
-Contact: linux-crypto@vger.kernel.org
-Description: One ZIP controller has one PF and multiple VFs, each function
+What: /sys/kernel/debug/hisi_zip/<bdf>/current_qm
+Date: Nov 2018
+Contact: linux-crypto@vger.kernel.org
+Description: One ZIP controller has one PF and multiple VFs, each function
has a QM. Select the QM which below qm refers to.
Only available for PF.
-What: /sys/kernel/debug/hisi_zip/<bdf>/qm/regs
-Date: Nov 2018
-Contact: linux-crypto@vger.kernel.org
-Description: Dump of QM related debug registers.
+What: /sys/kernel/debug/hisi_zip/<bdf>/alg_qos
+Date: Jun 2021
+Contact: linux-crypto@vger.kernel.org
+Description: The <bdf> is related the function for PF and VF.
+ ZIP driver supports to configure each function's QoS, the driver
+ supports to write <bdf> value to alg_qos in the host. Such as
+ "echo <bdf> value > alg_qos". The qos value is 1~1000, means
+ 1/1000~1000/1000 of total QoS. The driver reading alg_qos to
+ get related QoS in the host and VM, Such as "cat alg_qos".
+
+What: /sys/kernel/debug/hisi_zip/<bdf>/qm/regs
+Date: Nov 2018
+Contact: linux-crypto@vger.kernel.org
+Description: Dump of QM related debug registers.
Available for PF and VF in host. VF in guest currently only
has one debug register.
-What: /sys/kernel/debug/hisi_zip/<bdf>/qm/current_q
-Date: Nov 2018
-Contact: linux-crypto@vger.kernel.org
-Description: One QM may contain multiple queues. Select specific queue to
+What: /sys/kernel/debug/hisi_zip/<bdf>/qm/current_q
+Date: Nov 2018
+Contact: linux-crypto@vger.kernel.org
+Description: One QM may contain multiple queues. Select specific queue to
show its debug registers in above regs.
Only available for PF.
-What: /sys/kernel/debug/hisi_zip/<bdf>/qm/clear_enable
-Date: Nov 2018
-Contact: linux-crypto@vger.kernel.org
-Description: QM debug registers(regs) read clear control. 1 means enable
+What: /sys/kernel/debug/hisi_zip/<bdf>/qm/clear_enable
+Date: Nov 2018
+Contact: linux-crypto@vger.kernel.org
+Description: QM debug registers(regs) read clear control. 1 means enable
register read clear, otherwise 0.
Writing to this file has no functional effect, only enable or
disable counters clear after reading of these registers.
Only available for PF.
-What: /sys/kernel/debug/hisi_zip/<bdf>/qm/err_irq
-Date: Apr 2020
-Contact: linux-crypto@vger.kernel.org
-Description: Dump the number of invalid interrupts for
+What: /sys/kernel/debug/hisi_zip/<bdf>/qm/err_irq
+Date: Apr 2020
+Contact: linux-crypto@vger.kernel.org
+Description: Dump the number of invalid interrupts for
QM task completion.
Available for both PF and VF, and take no other effect on ZIP.
-What: /sys/kernel/debug/hisi_zip/<bdf>/qm/aeq_irq
-Date: Apr 2020
-Contact: linux-crypto@vger.kernel.org
-Description: Dump the number of QM async event queue interrupts.
+What: /sys/kernel/debug/hisi_zip/<bdf>/qm/aeq_irq
+Date: Apr 2020
+Contact: linux-crypto@vger.kernel.org
+Description: Dump the number of QM async event queue interrupts.
Available for both PF and VF, and take no other effect on ZIP.
-What: /sys/kernel/debug/hisi_zip/<bdf>/qm/abnormal_irq
-Date: Apr 2020
-Contact: linux-crypto@vger.kernel.org
-Description: Dump the number of interrupts for QM abnormal event.
+What: /sys/kernel/debug/hisi_zip/<bdf>/qm/abnormal_irq
+Date: Apr 2020
+Contact: linux-crypto@vger.kernel.org
+Description: Dump the number of interrupts for QM abnormal event.
Available for both PF and VF, and take no other effect on ZIP.
-What: /sys/kernel/debug/hisi_zip/<bdf>/qm/create_qp_err
-Date: Apr 2020
-Contact: linux-crypto@vger.kernel.org
-Description: Dump the number of queue allocation errors.
+What: /sys/kernel/debug/hisi_zip/<bdf>/qm/create_qp_err
+Date: Apr 2020
+Contact: linux-crypto@vger.kernel.org
+Description: Dump the number of queue allocation errors.
Available for both PF and VF, and take no other effect on ZIP.
-What: /sys/kernel/debug/hisi_zip/<bdf>/qm/mb_err
-Date: Apr 2020
-Contact: linux-crypto@vger.kernel.org
-Description: Dump the number of failed QM mailbox commands.
+What: /sys/kernel/debug/hisi_zip/<bdf>/qm/mb_err
+Date: Apr 2020
+Contact: linux-crypto@vger.kernel.org
+Description: Dump the number of failed QM mailbox commands.
Available for both PF and VF, and take no other effect on ZIP.
-What: /sys/kernel/debug/hisi_zip/<bdf>/qm/status
-Date: Apr 2020
-Contact: linux-crypto@vger.kernel.org
-Description: Dump the status of the QM.
- Four states: initiated, started, stopped and closed.
+What: /sys/kernel/debug/hisi_zip/<bdf>/qm/status
+Date: Apr 2020
+Contact: linux-crypto@vger.kernel.org
+Description: Dump the status of the QM.
+ Two states: work, stop.
Available for both PF and VF, and take no other effect on ZIP.
-What: /sys/kernel/debug/hisi_zip/<bdf>/zip_dfx/send_cnt
-Date: Apr 2020
-Contact: linux-crypto@vger.kernel.org
-Description: Dump the total number of sent requests.
+What: /sys/kernel/debug/hisi_zip/<bdf>/qm/diff_regs
+Date: Mar 2022
+Contact: linux-crypto@vger.kernel.org
+Description: QM debug registers(regs) read hardware register value. This
+ node is used to show the change of the qm registers value. This
+ node can be help users to check the change of register values.
+
+What: /sys/kernel/debug/hisi_zip/<bdf>/qm/qm_state
+Date: Jan 2024
+Contact: linux-crypto@vger.kernel.org
+Description: Dump the state of the device.
+ 0: busy, 1: idle.
+ Only available for PF, and take no other effect on ZIP.
+
+What: /sys/kernel/debug/hisi_zip/<bdf>/qm/dev_timeout
+Date: Feb 2024
+Contact: linux-crypto@vger.kernel.org
+Description: Set the wait time when stop queue fails. Available for both PF
+ and VF, and take no other effect on ZIP.
+ 0: not wait(default), others value: wait dev_timeout * 20 microsecond.
+
+What: /sys/kernel/debug/hisi_zip/<bdf>/qm/dev_state
+Date: Feb 2024
+Contact: linux-crypto@vger.kernel.org
+Description: Dump the stop queue status of the QM. The default value is 0,
+ if dev_timeout is set, when stop queue fails, the dev_state
+ will return non-zero value. Available for both PF and VF,
+ and take no other effect on ZIP.
+
+What: /sys/kernel/debug/hisi_zip/<bdf>/zip_dfx/diff_regs
+Date: Mar 2022
+Contact: linux-crypto@vger.kernel.org
+Description: ZIP debug registers(regs) read hardware register value. This
+ node is used to show the change of the registers value. this
+ node can be help users to check the change of register values.
+
+What: /sys/kernel/debug/hisi_zip/<bdf>/zip_dfx/send_cnt
+Date: Apr 2020
+Contact: linux-crypto@vger.kernel.org
+Description: Dump the total number of sent requests.
Available for both PF and VF, and take no other effect on ZIP.
-What: /sys/kernel/debug/hisi_zip/<bdf>/zip_dfx/recv_cnt
-Date: Apr 2020
-Contact: linux-crypto@vger.kernel.org
-Description: Dump the total number of received requests.
+What: /sys/kernel/debug/hisi_zip/<bdf>/zip_dfx/recv_cnt
+Date: Apr 2020
+Contact: linux-crypto@vger.kernel.org
+Description: Dump the total number of received requests.
Available for both PF and VF, and take no other effect on ZIP.
-What: /sys/kernel/debug/hisi_zip/<bdf>/zip_dfx/send_busy_cnt
-Date: Apr 2020
-Contact: linux-crypto@vger.kernel.org
-Description: Dump the total number of requests received
+What: /sys/kernel/debug/hisi_zip/<bdf>/zip_dfx/send_busy_cnt
+Date: Apr 2020
+Contact: linux-crypto@vger.kernel.org
+Description: Dump the total number of requests received
with returning busy.
Available for both PF and VF, and take no other effect on ZIP.
-What: /sys/kernel/debug/hisi_zip/<bdf>/zip_dfx/err_bd_cnt
-Date: Apr 2020
-Contact: linux-crypto@vger.kernel.org
-Description: Dump the total number of BD type error requests
+What: /sys/kernel/debug/hisi_zip/<bdf>/zip_dfx/err_bd_cnt
+Date: Apr 2020
+Contact: linux-crypto@vger.kernel.org
+Description: Dump the total number of BD type error requests
to be received.
Available for both PF and VF, and take no other effect on ZIP.
+
+What: /sys/kernel/debug/hisi_zip/<bdf>/cap_regs
+Date: Oct 2024
+Contact: linux-crypto@vger.kernel.org
+Description: Dump the values of the qm and zip capability bit registers and
+ support the query of device specifications to facilitate fault locating.
+ Available for both PF and VF, and take no other effect on ZIP.
diff --git a/Documentation/ABI/testing/debugfs-iio-ad9467 b/Documentation/ABI/testing/debugfs-iio-ad9467
new file mode 100644
index 000000000000..0352fca1f7f2
--- /dev/null
+++ b/Documentation/ABI/testing/debugfs-iio-ad9467
@@ -0,0 +1,39 @@
+What: /sys/kernel/debug/iio/iio:deviceX/calibration_table_dump
+KernelVersion: 6.11
+Contact: linux-iio@vger.kernel.org
+Description:
+ This dumps the calibration table that was filled during the
+ digital interface tuning process.
+
+What: /sys/kernel/debug/iio/iio:deviceX/in_voltage_test_mode_available
+KernelVersion: 6.11
+Contact: linux-iio@vger.kernel.org
+Description:
+ List all the available test tones:
+ - off
+ - midscale_short
+ - pos_fullscale
+ - neg_fullscale
+ - checkerboard
+ - prbs23
+ - prbs9
+ - one_zero_toggle
+ - user
+ - bit_toggle
+ - sync
+ - one_bit_high
+ - mixed_bit_frequency
+ - ramp
+
+ Note that depending on the actual device being used, some of the
+ above might not be available (and they won't be listed when
+ reading the file).
+
+What: /sys/kernel/debug/iio/iio:deviceX/in_voltageY_test_mode
+KernelVersion: 6.11
+Contact: linux-iio@vger.kernel.org
+Description:
+ Writing to this file will initiate one of available test tone on
+ channel Y. Reading it, shows which test is running. In cases
+ where an IIO backend is available and supports the test tone,
+ additional information about the data correctness is given.
diff --git a/Documentation/ABI/testing/debugfs-iio-backend b/Documentation/ABI/testing/debugfs-iio-backend
new file mode 100644
index 000000000000..01ab94469432
--- /dev/null
+++ b/Documentation/ABI/testing/debugfs-iio-backend
@@ -0,0 +1,20 @@
+What: /sys/kernel/debug/iio/iio:deviceX/backendY/name
+KernelVersion: 6.11
+Contact: linux-iio@vger.kernel.org
+Description:
+ Name of Backend Y connected to device X.
+
+What: /sys/kernel/debug/iio/iio:deviceX/backendY/direct_reg_access
+KernelVersion: 6.11
+Contact: linux-iio@vger.kernel.org
+Description:
+ Directly access the registers of backend Y. Typical usage is:
+
+ Reading address 0x50
+ echo 0x50 > direct_reg_access
+ cat direct_reg_access
+
+ Writing address 0x50
+ echo 0x50 0x3 > direct_reg_access
+ //readback address 0x50
+ cat direct_reg_access
diff --git a/Documentation/ABI/testing/debugfs-intel-iommu b/Documentation/ABI/testing/debugfs-intel-iommu
new file mode 100644
index 000000000000..2ab8464504a9
--- /dev/null
+++ b/Documentation/ABI/testing/debugfs-intel-iommu
@@ -0,0 +1,276 @@
+What: /sys/kernel/debug/iommu/intel/iommu_regset
+Date: December 2023
+Contact: Jingqi Liu <Jingqi.liu@intel.com>
+Description:
+ This file dumps all the register contents for each IOMMU device.
+
+ Example in Kabylake:
+
+ ::
+
+ $ sudo cat /sys/kernel/debug/iommu/intel/iommu_regset
+
+ IOMMU: dmar0 Register Base Address: 26be37000
+
+ Name Offset Contents
+ VER 0x00 0x0000000000000010
+ GCMD 0x18 0x0000000000000000
+ GSTS 0x1c 0x00000000c7000000
+ FSTS 0x34 0x0000000000000000
+ FECTL 0x38 0x0000000000000000
+
+ [...]
+
+ IOMMU: dmar1 Register Base Address: fed90000
+
+ Name Offset Contents
+ VER 0x00 0x0000000000000010
+ GCMD 0x18 0x0000000000000000
+ GSTS 0x1c 0x00000000c7000000
+ FSTS 0x34 0x0000000000000000
+ FECTL 0x38 0x0000000000000000
+
+ [...]
+
+ IOMMU: dmar2 Register Base Address: fed91000
+
+ Name Offset Contents
+ VER 0x00 0x0000000000000010
+ GCMD 0x18 0x0000000000000000
+ GSTS 0x1c 0x00000000c7000000
+ FSTS 0x34 0x0000000000000000
+ FECTL 0x38 0x0000000000000000
+
+ [...]
+
+What: /sys/kernel/debug/iommu/intel/ir_translation_struct
+Date: December 2023
+Contact: Jingqi Liu <Jingqi.liu@intel.com>
+Description:
+ This file dumps the table entries for Interrupt
+ remapping and Interrupt posting.
+
+ Example in Kabylake:
+
+ ::
+
+ $ sudo cat /sys/kernel/debug/iommu/intel/ir_translation_struct
+
+ Remapped Interrupt supported on IOMMU: dmar0
+ IR table address:100900000
+
+ Entry SrcID DstID Vct IRTE_high IRTE_low
+ 0 00:0a.0 00000080 24 0000000000040050 000000800024000d
+ 1 00:0a.0 00000001 ef 0000000000040050 0000000100ef000d
+
+ Remapped Interrupt supported on IOMMU: dmar1
+ IR table address:100300000
+ Entry SrcID DstID Vct IRTE_high IRTE_low
+ 0 00:02.0 00000002 26 0000000000040010 000000020026000d
+
+ [...]
+
+ ****
+
+ Posted Interrupt supported on IOMMU: dmar0
+ IR table address:100900000
+ Entry SrcID PDA_high PDA_low Vct IRTE_high IRTE_low
+
+What: /sys/kernel/debug/iommu/intel/dmar_translation_struct
+Date: December 2023
+Contact: Jingqi Liu <Jingqi.liu@intel.com>
+Description:
+ This file dumps Intel IOMMU DMA remapping tables, such
+ as root table, context table, PASID directory and PASID
+ table entries in debugfs. For legacy mode, it doesn't
+ support PASID, and hence PASID field is defaulted to
+ '-1' and other PASID related fields are invalid.
+
+ Example in Kabylake:
+
+ ::
+
+ $ sudo cat /sys/kernel/debug/iommu/intel/dmar_translation_struct
+
+ IOMMU dmar1: Root Table Address: 0x103027000
+ B.D.F Root_entry
+ 00:02.0 0x0000000000000000:0x000000010303e001
+
+ Context_entry
+ 0x0000000000000102:0x000000010303f005
+
+ PASID PASID_table_entry
+ -1 0x0000000000000000:0x0000000000000000:0x0000000000000000
+
+ IOMMU dmar0: Root Table Address: 0x103028000
+ B.D.F Root_entry
+ 00:0a.0 0x0000000000000000:0x00000001038a7001
+
+ Context_entry
+ 0x0000000000000000:0x0000000103220e7d
+
+ PASID PASID_table_entry
+ 0 0x0000000000000000:0x0000000000800002:0x00000001038a5089
+
+ [...]
+
+What: /sys/kernel/debug/iommu/intel/invalidation_queue
+Date: December 2023
+Contact: Jingqi Liu <Jingqi.liu@intel.com>
+Description:
+ This file exports invalidation queue internals of each
+ IOMMU device.
+
+ Example in Kabylake:
+
+ ::
+
+ $ sudo cat /sys/kernel/debug/iommu/intel/invalidation_queue
+
+ Invalidation queue on IOMMU: dmar0
+ Base: 0x10022e000 Head: 20 Tail: 20
+ Index qw0 qw1 qw2
+ 0 0000000000000014 0000000000000000 0000000000000000
+ 1 0000000200000025 0000000100059c04 0000000000000000
+ 2 0000000000000014 0000000000000000 0000000000000000
+
+ qw3 status
+ 0000000000000000 0000000000000000
+ 0000000000000000 0000000000000000
+ 0000000000000000 0000000000000000
+
+ [...]
+
+ Invalidation queue on IOMMU: dmar1
+ Base: 0x10026e000 Head: 32 Tail: 32
+ Index qw0 qw1 status
+ 0 0000000000000004 0000000000000000 0000000000000000
+ 1 0000000200000025 0000000100059804 0000000000000000
+ 2 0000000000000011 0000000000000000 0000000000000000
+
+ [...]
+
+What: /sys/kernel/debug/iommu/intel/dmar_perf_latency
+Date: December 2023
+Contact: Jingqi Liu <Jingqi.liu@intel.com>
+Description:
+ This file is used to control and show counts of
+ execution time ranges for various types per DMAR.
+
+ Firstly, write a value to
+ /sys/kernel/debug/iommu/intel/dmar_perf_latency
+ to enable sampling.
+
+ The possible values are as follows:
+
+ * 0 - disable sampling all latency data
+
+ * 1 - enable sampling IOTLB invalidation latency data
+
+ * 2 - enable sampling devTLB invalidation latency data
+
+ * 3 - enable sampling intr entry cache invalidation latency data
+
+ Next, read /sys/kernel/debug/iommu/intel/dmar_perf_latency gives
+ a snapshot of sampling result of all enabled monitors.
+
+ Examples in Kabylake:
+
+ ::
+
+ 1) Disable sampling all latency data:
+
+ $ sudo echo 0 > /sys/kernel/debug/iommu/intel/dmar_perf_latency
+
+ 2) Enable sampling IOTLB invalidation latency data
+
+ $ sudo echo 1 > /sys/kernel/debug/iommu/intel/dmar_perf_latency
+
+ $ sudo cat /sys/kernel/debug/iommu/intel/dmar_perf_latency
+
+ IOMMU: dmar0 Register Base Address: 26be37000
+ <0.1us 0.1us-1us 1us-10us 10us-100us 100us-1ms
+ inv_iotlb 0 0 0 0 0
+
+ 1ms-10ms >=10ms min(us) max(us) average(us)
+ inv_iotlb 0 0 0 0 0
+
+ [...]
+
+ IOMMU: dmar2 Register Base Address: fed91000
+ <0.1us 0.1us-1us 1us-10us 10us-100us 100us-1ms
+ inv_iotlb 0 0 18 0 0
+
+ 1ms-10ms >=10ms min(us) max(us) average(us)
+ inv_iotlb 0 0 2 2 2
+
+ 3) Enable sampling devTLB invalidation latency data
+
+ $ sudo echo 2 > /sys/kernel/debug/iommu/intel/dmar_perf_latency
+
+ $ sudo cat /sys/kernel/debug/iommu/intel/dmar_perf_latency
+
+ IOMMU: dmar0 Register Base Address: 26be37000
+ <0.1us 0.1us-1us 1us-10us 10us-100us 100us-1ms
+ inv_devtlb 0 0 0 0 0
+
+ >=10ms min(us) max(us) average(us)
+ inv_devtlb 0 0 0 0
+
+ [...]
+
+What: /sys/kernel/debug/iommu/intel/<bdf>/domain_translation_struct
+Date: December 2023
+Contact: Jingqi Liu <Jingqi.liu@intel.com>
+Description:
+ This file dumps a specified page table of Intel IOMMU
+ in legacy mode or scalable mode.
+
+ For a device that only supports legacy mode, dump its
+ page table by the debugfs file in the debugfs device
+ directory. e.g.
+ /sys/kernel/debug/iommu/intel/0000:00:02.0/domain_translation_struct.
+
+ For a device that supports scalable mode, dump the
+ page table of specified pasid by the debugfs file in
+ the debugfs pasid directory. e.g.
+ /sys/kernel/debug/iommu/intel/0000:00:02.0/1/domain_translation_struct.
+
+ Examples in Kabylake:
+
+ ::
+
+ 1) Dump the page table of device "0000:00:02.0" that only supports legacy mode.
+
+ $ sudo cat /sys/kernel/debug/iommu/intel/0000:00:02.0/domain_translation_struct
+
+ Device 0000:00:02.0 @0x1017f8000
+ IOVA_PFN PML5E PML4E
+ 0x000000008d800 | 0x0000000000000000 0x00000001017f9003
+ 0x000000008d801 | 0x0000000000000000 0x00000001017f9003
+ 0x000000008d802 | 0x0000000000000000 0x00000001017f9003
+
+ PDPE PDE PTE
+ 0x00000001017fa003 0x00000001017fb003 0x000000008d800003
+ 0x00000001017fa003 0x00000001017fb003 0x000000008d801003
+ 0x00000001017fa003 0x00000001017fb003 0x000000008d802003
+
+ [...]
+
+ 2) Dump the page table of device "0000:00:0a.0" with PASID "1" that
+ supports scalable mode.
+
+ $ sudo cat /sys/kernel/debug/iommu/intel/0000:00:0a.0/1/domain_translation_struct
+
+ Device 0000:00:0a.0 with pasid 1 @0x10c112000
+ IOVA_PFN PML5E PML4E
+ 0x0000000000000 | 0x0000000000000000 0x000000010df93003
+ 0x0000000000001 | 0x0000000000000000 0x000000010df93003
+ 0x0000000000002 | 0x0000000000000000 0x000000010df93003
+
+ PDPE PDE PTE
+ 0x0000000106ae6003 0x0000000104b38003 0x0000000147c00803
+ 0x0000000106ae6003 0x0000000104b38003 0x0000000147c01803
+ 0x0000000106ae6003 0x0000000104b38003 0x0000000147c02803
+
+ [...]
diff --git a/Documentation/ABI/testing/debugfs-msi-wmi-platform b/Documentation/ABI/testing/debugfs-msi-wmi-platform
new file mode 100644
index 000000000000..71f9992168d8
--- /dev/null
+++ b/Documentation/ABI/testing/debugfs-msi-wmi-platform
@@ -0,0 +1,14 @@
+What: /sys/kernel/debug/msi-wmi-platform-<wmi_device_name>/*
+Date: April 2024
+KernelVersion: 6.10
+Contact: Armin Wolf <W_Armin@gmx.de>
+Description:
+ This file allows to execute the associated WMI method with the same name.
+
+ To start the execution, write a buffer containing the method arguments
+ at file offset 0. Partial writes or writes at a different offset are not
+ supported.
+
+ The buffer returned by the WMI method can then be read from the file.
+
+ See Documentation/wmi/devices/msi-wmi-platform.rst for details.
diff --git a/Documentation/ABI/testing/debugfs-pcie-ptm b/Documentation/ABI/testing/debugfs-pcie-ptm
new file mode 100644
index 000000000000..602d41363571
--- /dev/null
+++ b/Documentation/ABI/testing/debugfs-pcie-ptm
@@ -0,0 +1,70 @@
+What: /sys/kernel/debug/pcie_ptm_*/local_clock
+Date: May 2025
+Contact: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
+Description:
+ (RO) PTM local clock in nanoseconds. Applicable for both Root
+ Complex and Endpoint controllers.
+
+What: /sys/kernel/debug/pcie_ptm_*/master_clock
+Date: May 2025
+Contact: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
+Description:
+ (RO) PTM master clock in nanoseconds. Applicable only for
+ Endpoint controllers.
+
+What: /sys/kernel/debug/pcie_ptm_*/t1
+Date: May 2025
+Contact: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
+Description:
+ (RO) PTM T1 timestamp in nanoseconds. Applicable only for
+ Endpoint controllers.
+
+What: /sys/kernel/debug/pcie_ptm_*/t2
+Date: May 2025
+Contact: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
+Description:
+ (RO) PTM T2 timestamp in nanoseconds. Applicable only for
+ Root Complex controllers.
+
+What: /sys/kernel/debug/pcie_ptm_*/t3
+Date: May 2025
+Contact: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
+Description:
+ (RO) PTM T3 timestamp in nanoseconds. Applicable only for
+ Root Complex controllers.
+
+What: /sys/kernel/debug/pcie_ptm_*/t4
+Date: May 2025
+Contact: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
+Description:
+ (RO) PTM T4 timestamp in nanoseconds. Applicable only for
+ Endpoint controllers.
+
+What: /sys/kernel/debug/pcie_ptm_*/context_update
+Date: May 2025
+Contact: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
+Description:
+ (RW) Control the PTM context update mode. Applicable only for
+ Endpoint controllers.
+
+ Following values are supported:
+
+ * auto = PTM context auto update trigger for every 10ms
+
+ * manual = PTM context manual update. Writing 'manual' to this
+ file triggers PTM context update (default)
+
+What: /sys/kernel/debug/pcie_ptm_*/context_valid
+Date: May 2025
+Contact: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
+Description:
+ (RW) Control the PTM context validity (local clock timing).
+ Applicable only for Root Complex controllers. PTM context is
+ invalidated by hardware if the Root Complex enters low power
+ mode or changes link frequency.
+
+ Following values are supported:
+
+ * 0 = PTM context invalid (default)
+
+ * 1 = PTM context valid
diff --git a/Documentation/ABI/testing/debugfs-pktcdvd b/Documentation/ABI/testing/debugfs-pktcdvd
deleted file mode 100644
index f6f65a4faea0..000000000000
--- a/Documentation/ABI/testing/debugfs-pktcdvd
+++ /dev/null
@@ -1,18 +0,0 @@
-What: /sys/kernel/debug/pktcdvd/pktcdvd[0-7]
-Date: Oct. 2006
-KernelVersion: 2.6.20
-Contact: Thomas Maier <balagi@justmail.de>
-Description:
-
-The pktcdvd module (packet writing driver) creates
-these files in debugfs:
-
-/sys/kernel/debug/pktcdvd/pktcdvd[0-7]/
-
- ==== ====== ====================================
- info 0444 Lots of driver statistics and infos.
- ==== ====== ====================================
-
-Example::
-
- cat /sys/kernel/debug/pktcdvd/pktcdvd0/info
diff --git a/Documentation/ABI/testing/debugfs-scmi b/Documentation/ABI/testing/debugfs-scmi
new file mode 100644
index 000000000000..ee7179ab2edf
--- /dev/null
+++ b/Documentation/ABI/testing/debugfs-scmi
@@ -0,0 +1,70 @@
+What: /sys/kernel/debug/scmi/<n>/instance_name
+Date: March 2023
+KernelVersion: 6.3
+Contact: cristian.marussi@arm.com
+Description: The name of the underlying SCMI instance <n> described by
+ all the debugfs accessors rooted at /sys/kernel/debug/scmi/<n>,
+ expressed as the full name of the top DT SCMI node under which
+ this SCMI instance is rooted.
+Users: Debugging, any userspace test suite
+
+What: /sys/kernel/debug/scmi/<n>/atomic_threshold_us
+Date: March 2023
+KernelVersion: 6.3
+Contact: cristian.marussi@arm.com
+Description: An optional time value, expressed in microseconds, representing,
+ on this SCMI instance <n>, the threshold above which any SCMI
+ command, advertised to have an higher-than-threshold execution
+ latency, should not be considered for atomic mode of operation,
+ even if requested.
+Users: Debugging, any userspace test suite
+
+What: /sys/kernel/debug/scmi/<n>/transport/type
+Date: March 2023
+KernelVersion: 6.3
+Contact: cristian.marussi@arm.com
+Description: A string representing the type of transport configured for this
+ SCMI instance <n>.
+Users: Debugging, any userspace test suite
+
+What: /sys/kernel/debug/scmi/<n>/transport/is_atomic
+Date: March 2023
+KernelVersion: 6.3
+Contact: cristian.marussi@arm.com
+Description: A boolean stating if the transport configured on the underlying
+ SCMI instance <n> is capable of atomic mode of operation.
+Users: Debugging, any userspace test suite
+
+What: /sys/kernel/debug/scmi/<n>/transport/max_rx_timeout_ms
+Date: March 2023
+KernelVersion: 6.3
+Contact: cristian.marussi@arm.com
+Description: Timeout in milliseconds allowed for SCMI synchronous replies
+ for the currently configured SCMI transport for instance <n>.
+Users: Debugging, any userspace test suite
+
+What: /sys/kernel/debug/scmi/<n>/transport/max_msg_size
+Date: March 2023
+KernelVersion: 6.3
+Contact: cristian.marussi@arm.com
+Description: Max message size of allowed SCMI messages for the currently
+ configured SCMI transport for instance <n>.
+Users: Debugging, any userspace test suite
+
+What: /sys/kernel/debug/scmi/<n>/transport/tx_max_msg
+Date: March 2023
+KernelVersion: 6.3
+Contact: cristian.marussi@arm.com
+Description: Max number of concurrently allowed in-flight SCMI messages for
+ the currently configured SCMI transport for instance <n> on the
+ TX channels.
+Users: Debugging, any userspace test suite
+
+What: /sys/kernel/debug/scmi/<n>/transport/rx_max_msg
+Date: March 2023
+KernelVersion: 6.3
+Contact: cristian.marussi@arm.com
+Description: Max number of concurrently allowed in-flight SCMI messages for
+ the currently configured SCMI transport for instance <n> on the
+ RX channels.
+Users: Debugging, any userspace test suite
diff --git a/Documentation/ABI/testing/debugfs-scmi-raw b/Documentation/ABI/testing/debugfs-scmi-raw
new file mode 100644
index 000000000000..5847b96b3896
--- /dev/null
+++ b/Documentation/ABI/testing/debugfs-scmi-raw
@@ -0,0 +1,208 @@
+What: /sys/kernel/debug/scmi/<n>/raw/message
+Date: March 2023
+KernelVersion: 6.3
+Contact: cristian.marussi@arm.com
+Description: SCMI Raw synchronous message injection/snooping facility; write
+ a complete SCMI synchronous command message (header included)
+ in little-endian binary format to have it sent to the configured
+ backend SCMI server for instance <n>.
+ Any subsequently received response can be read from this same
+ entry if it arrived within the configured timeout.
+ Each write to the entry causes one command request to be built
+ and sent while the replies are read back one message at time
+ (receiving an EOF at each message boundary).
+Users: Debugging, any userspace test suite
+
+What: /sys/kernel/debug/scmi/<n>/raw/message_async
+Date: March 2023
+KernelVersion: 6.3
+Contact: cristian.marussi@arm.com
+Description: SCMI Raw asynchronous message injection/snooping facility; write
+ a complete SCMI asynchronous command message (header included)
+ in little-endian binary format to have it sent to the configured
+ backend SCMI server for instance <n>.
+ Any subsequently received response can be read from this same
+ entry if it arrived within the configured timeout.
+ Any additional delayed response received afterwards can be read
+ from this same entry too if it arrived within the configured
+ timeout.
+ Each write to the entry causes one command request to be built
+ and sent while the replies are read back one message at time
+ (receiving an EOF at each message boundary).
+Users: Debugging, any userspace test suite
+
+What: /sys/kernel/debug/scmi/<n>/raw/message_poll
+Date: June 2025
+KernelVersion: 6.16
+Contact: cristian.marussi@arm.com
+Description: SCMI Raw message injection/snooping facility using polling mode;
+ write a complete SCMI command message (header included) in
+ little-endian binary format to have it sent to the configured
+ backend SCMI server for instance <n>, using polling mode on
+ the reception path. (if transport is polling capable)
+ Any subsequently received response can be read from this same
+ entry if it arrived within the configured timeout.
+ Each write to the entry causes one command request to be built
+ and sent while the replies are read back one message at time
+ (receiving an EOF at each message boundary).
+Users: Debugging, any userspace test suite
+
+What: /sys/kernel/debug/scmi/<n>/raw/message_poll_async
+Date: June 2025
+KernelVersion: 6.16
+Contact: cristian.marussi@arm.com
+Description: SCMI Raw asynchronous message injection/snooping facility using
+ polling-mode; write a complete SCMI asynchronous command message
+ (header included) in little-endian binary format to have it sent
+ to the configured backend SCMI server for instance <n>, using
+ polling-mode on the reception path of the immediate part of the
+ asynchronous command. (if transport is polling capable)
+ Any subsequently received response can be read from this same
+ entry if it arrived within the configured timeout.
+ Any additional delayed response received afterwards can be read
+ from this same entry too if it arrived within the configured
+ timeout.
+ Each write to the entry causes one command request to be built
+ and sent while the replies are read back one message at time
+ (receiving an EOF at each message boundary).
+Users: Debugging, any userspace test suite
+
+What: /sys/kernel/debug/scmi/<n>/raw/errors
+Date: March 2023
+KernelVersion: 6.3
+Contact: cristian.marussi@arm.com
+Description: SCMI Raw message errors facility; any kind of timed-out or
+ generally unexpectedly received SCMI message, for instance <n>,
+ can be read from this entry.
+ Each read gives back one message at time (receiving an EOF at
+ each message boundary).
+Users: Debugging, any userspace test suite
+
+What: /sys/kernel/debug/scmi/<n>/raw/notification
+Date: March 2023
+KernelVersion: 6.3
+Contact: cristian.marussi@arm.com
+Description: SCMI Raw notification snooping facility; any notification
+ emitted by the backend SCMI server, for instance <n>, can be
+ read from this entry.
+ Each read gives back one message at time (receiving an EOF at
+ each message boundary).
+Users: Debugging, any userspace test suite
+
+What: /sys/kernel/debug/scmi/<n>/raw/reset
+Date: March 2023
+KernelVersion: 6.3
+Contact: cristian.marussi@arm.com
+Description: SCMI Raw stack reset facility; writing a value to this entry
+ causes the internal queues of any kind of received message,
+ still pending to be read out for instance <n>, to be immediately
+ flushed.
+ Can be used to reset and clean the SCMI Raw stack between to
+ different test-run.
+Users: Debugging, any userspace test suite
+
+What: /sys/kernel/debug/scmi/<n>/raw/channels/<m>/message
+Date: March 2023
+KernelVersion: 6.3
+Contact: cristian.marussi@arm.com
+Description: SCMI Raw synchronous message injection/snooping facility; write
+ a complete SCMI synchronous command message (header included)
+ in little-endian binary format to have it sent to the configured
+ backend SCMI server for instance <n> through the <m> transport
+ channel.
+ Any subsequently received response can be read from this same
+ entry if it arrived on channel <m> within the configured
+ timeout.
+ Each write to the entry causes one command request to be built
+ and sent while the replies are read back one message at time
+ (receiving an EOF at each message boundary).
+ Channel identifier <m> matches the SCMI protocol number which
+ has been associated with this transport channel in the DT
+ description, with base protocol number 0x10 being the default
+ channel for this instance.
+ Note that these per-channel entries rooted at <..>/channels
+ exist only if the transport is configured to have more than
+ one default channel.
+Users: Debugging, any userspace test suite
+
+What: /sys/kernel/debug/scmi/<n>/raw/channels/<m>/message_async
+Date: March 2023
+KernelVersion: 6.3
+Contact: cristian.marussi@arm.com
+Description: SCMI Raw asynchronous message injection/snooping facility; write
+ a complete SCMI asynchronous command message (header included)
+ in little-endian binary format to have it sent to the configured
+ backend SCMI server for instance <n> through the <m> transport
+ channel.
+ Any subsequently received response can be read from this same
+ entry if it arrived on channel <m> within the configured
+ timeout.
+ Any additional delayed response received afterwards can be read
+ from this same entry too if it arrived within the configured
+ timeout.
+ Each write to the entry causes one command request to be built
+ and sent while the replies are read back one message at time
+ (receiving an EOF at each message boundary).
+ Channel identifier <m> matches the SCMI protocol number which
+ has been associated with this transport channel in the DT
+ description, with base protocol number 0x10 being the default
+ channel for this instance.
+ Note that these per-channel entries rooted at <..>/channels
+ exist only if the transport is configured to have more than
+ one default channel.
+Users: Debugging, any userspace test suite
+
+
+What: /sys/kernel/debug/scmi/<n>/raw/channels/<m>/message_poll
+Date: June 2025
+KernelVersion: 6.16
+Contact: cristian.marussi@arm.com
+Description: SCMI Raw message injection/snooping facility using polling mode;
+ write a complete SCMI command message (header included) in
+ little-endian binary format to have it sent to the configured
+ backend SCMI server for instance <n> through the <m> transport
+ channel, using polling mode on the reception path.
+ (if transport is polling capable)
+ Any subsequently received response can be read from this same
+ entry if it arrived on channel <m> within the configured
+ timeout.
+ Each write to the entry causes one command request to be built
+ and sent while the replies are read back one message at time
+ (receiving an EOF at each message boundary).
+ Channel identifier <m> matches the SCMI protocol number which
+ has been associated with this transport channel in the DT
+ description, with base protocol number 0x10 being the default
+ channel for this instance.
+ Note that these per-channel entries rooted at <..>/channels
+ exist only if the transport is configured to have more than
+ one default channel.
+Users: Debugging, any userspace test suite
+
+What: /sys/kernel/debug/scmi/<n>/raw/channels/<m>/message_poll_async
+Date: June 2025
+KernelVersion: 6.16
+Contact: cristian.marussi@arm.com
+Description: SCMI Raw asynchronous message injection/snooping facility using
+ polling-mode; write a complete SCMI asynchronous command message
+ (header included) in little-endian binary format to have it sent
+ to the configured backend SCMI server for instance <n> through
+ the <m> transport channel, using polling mode on the reception
+ path of the immediate part of the asynchronous command.
+ (if transport is polling capable)
+ Any subsequently received response can be read from this same
+ entry if it arrived on channel <m> within the configured
+ timeout.
+ Any additional delayed response received afterwards can be read
+ from this same entry too if it arrived within the configured
+ timeout.
+ Each write to the entry causes one command request to be built
+ and sent while the replies are read back one message at time
+ (receiving an EOF at each message boundary).
+ Channel identifier <m> matches the SCMI protocol number which
+ has been associated with this transport channel in the DT
+ description, with base protocol number 0x10 being the default
+ channel for this instance.
+ Note that these per-channel entries rooted at <..>/channels
+ exist only if the transport is configured to have more than
+ one default channel.
+Users: Debugging, any userspace test suite
diff --git a/Documentation/ABI/testing/debugfs-tpmi b/Documentation/ABI/testing/debugfs-tpmi
new file mode 100644
index 000000000000..c493a1403d2f
--- /dev/null
+++ b/Documentation/ABI/testing/debugfs-tpmi
@@ -0,0 +1,40 @@
+What: /sys/kernel/debug/tpmi-<n>/pfs_dump
+Date: November 2023
+KernelVersion: 6.6
+Contact: srinivas.pandruvada@linux.intel.com
+Description:
+The PFS (PM Feature Structure) table, shows details of each power
+management feature. This includes:
+tpmi_id, number of entries, entry size, offset, vsec offset, lock status
+and disabled status.
+Users: Debugging, any user space test suite
+
+What: /sys/kernel/debug/tpmi-<n>/tpmi-id-<n>/mem_dump
+Date: November 2023
+KernelVersion: 6.6
+Contact: srinivas.pandruvada@linux.intel.com
+Description:
+Shows the memory dump of the MMIO region for a TPMI ID.
+Users: Debugging, any user space test suite
+
+What: /sys/kernel/debug/tpmi-<n>/tpmi-id-<n>/mem_write
+Date: November 2023
+KernelVersion: 6.6
+Contact: srinivas.pandruvada@linux.intel.com
+Description:
+Allows to write at any offset. It doesn't check for Read/Write access
+as hardware will not allow to write at read-only memory. This write is
+at offset multiples of 4. The format is instance,offset,contents.
+Example:
+echo 0,0x20,0xff > mem_write
+echo 1,64,64 > mem_write
+Users: Debugging, any user space test suite
+
+What: /sys/kernel/debug/tpmi-<n>/plr/domain<n>/status
+Date: Aug 2024
+KernelVersion: 6.11
+Contact: Tero Kristo <tero.kristo@linux.intel.com>
+Description:
+Shows the currently active Performance Limit Reasons for die level and the
+individual CPUs under the die. The contents of this file are sticky, and
+clearing all the statuses can be done by writing "0\n" to this file.
diff --git a/Documentation/ABI/testing/debugfs-turris-mox-rwtm b/Documentation/ABI/testing/debugfs-turris-mox-rwtm
deleted file mode 100644
index 813987d5de4e..000000000000
--- a/Documentation/ABI/testing/debugfs-turris-mox-rwtm
+++ /dev/null
@@ -1,14 +0,0 @@
-What: /sys/kernel/debug/turris-mox-rwtm/do_sign
-Date: Jun 2020
-KernelVersion: 5.8
-Contact: Marek Behún <kabel@kernel.org>
-Description:
-
- ======= ===========================================================
- (Write) Message to sign with the ECDSA private key stored in
- device's OTP. The message must be exactly 64 bytes
- (since this is intended for SHA-512 hashes).
- (Read) The resulting signature, 136 bytes. This contains the
- R and S values of the ECDSA signature, both in
- big-endian format.
- ======= ===========================================================
diff --git a/Documentation/ABI/testing/debugfs-vfio b/Documentation/ABI/testing/debugfs-vfio
new file mode 100644
index 000000000000..70ec2d454686
--- /dev/null
+++ b/Documentation/ABI/testing/debugfs-vfio
@@ -0,0 +1,31 @@
+What: /sys/kernel/debug/vfio
+Date: December 2023
+KernelVersion: 6.8
+Contact: Longfang Liu <liulongfang@huawei.com>
+Description: This debugfs file directory is used for debugging
+ of vfio devices, it's a common directory for all vfio devices.
+ Vfio core will create a device subdirectory under this
+ directory.
+
+What: /sys/kernel/debug/vfio/<device>/migration
+Date: December 2023
+KernelVersion: 6.8
+Contact: Longfang Liu <liulongfang@huawei.com>
+Description: This debugfs file directory is used for debugging
+ of vfio devices that support live migration.
+ The debugfs of each vfio device that supports live migration
+ could be created under this directory.
+
+What: /sys/kernel/debug/vfio/<device>/migration/state
+Date: December 2023
+KernelVersion: 6.8
+Contact: Longfang Liu <liulongfang@huawei.com>
+Description: Read the live migration status of the vfio device.
+ The contents of the state file reflects the migration state
+ relative to those defined in the vfio_device_mig_state enum
+
+What: /sys/kernel/debug/vfio/<device>/migration/features
+Date: Oct 2025
+KernelVersion: 6.18
+Contact: Cédric Le Goater <clg@redhat.com>
+Description: Read the migration features of the vfio device.
diff --git a/Documentation/ABI/testing/gpio-cdev b/Documentation/ABI/testing/gpio-cdev
index 66bdcd188b6c..c9689b2a6fed 100644
--- a/Documentation/ABI/testing/gpio-cdev
+++ b/Documentation/ABI/testing/gpio-cdev
@@ -6,8 +6,9 @@ Description:
The character device files /dev/gpiochip* are the interface
between GPIO chips and userspace.
- The ioctl(2)-based ABI is defined and documented in
- [include/uapi]<linux/gpio.h>.
+ The ioctl(2)-based ABI is defined in
+ [include/uapi]<linux/gpio.h> and documented in
+ Documentation/userspace-api/gpio/chardev.rst.
The following file operations are supported:
@@ -17,8 +18,8 @@ Description:
ioctl(2)
Initiate various actions.
- See the inline documentation in [include/uapi]<linux/gpio.h>
- for descriptions of all ioctls.
+ See Documentation/userspace-api/gpio/chardev.rst
+ for a description of all ioctls.
close(2)
Stops and free up the I/O contexts that was associated
diff --git a/Documentation/ABI/testing/ima_policy b/Documentation/ABI/testing/ima_policy
index 839fab811b18..d4b3696a9efb 100644
--- a/Documentation/ABI/testing/ima_policy
+++ b/Documentation/ABI/testing/ima_policy
@@ -20,21 +20,23 @@ Description:
rule format: action [condition ...]
action: measure | dont_measure | appraise | dont_appraise |
- audit | hash | dont_hash
+ audit | dont_audit | hash | dont_hash
condition:= base | lsm [option]
base: [[func=] [mask=] [fsmagic=] [fsuuid=] [fsname=]
+ [fs_subtype=]
[uid=] [euid=] [gid=] [egid=]
[fowner=] [fgroup=]]
lsm: [[subj_user=] [subj_role=] [subj_type=]
[obj_user=] [obj_role=] [obj_type=]]
- option: [[appraise_type=]] [template=] [permit_directio]
- [appraise_flag=] [appraise_algos=] [keyrings=]
+ option: [digest_type=] [template=] [permit_directio]
+ [appraise_type=] [appraise_flag=]
+ [appraise_algos=] [keyrings=]
base:
func:= [BPRM_CHECK][MMAP_CHECK][CREDS_CHECK][FILE_CHECK][MODULE_CHECK]
[FIRMWARE_CHECK]
[KEXEC_KERNEL_CHECK] [KEXEC_INITRAMFS_CHECK]
[KEXEC_CMDLINE] [KEY_CHECK] [CRITICAL_DATA]
- [SETXATTR_CHECK]
+ [SETXATTR_CHECK][MMAP_CHECK_REQPROT]
mask:= [[^]MAY_READ] [[^]MAY_WRITE] [[^]MAY_APPEND]
[[^]MAY_EXEC]
fsmagic:= hex value
@@ -47,10 +49,21 @@ Description:
fgroup:= decimal value
lsm: are LSM specific
option:
- appraise_type:= [imasig] [imasig|modsig]
- appraise_flag:= [check_blacklist]
- Currently, blacklist check is only for files signed with appended
- signature.
+ appraise_type:= [imasig] | [imasig|modsig] | [sigv3]
+ where 'imasig' is the original or the signature
+ format v2.
+ where 'modsig' is an appended signature,
+ where 'sigv3' is the signature format v3. (Currently
+ limited to fsverity digest based signatures
+ stored in security.ima xattr. Requires
+ specifying "digest_type=verity" first.)
+
+ appraise_flag:= [check_blacklist] (deprecated)
+ Setting the check_blacklist flag is no longer necessary.
+ All appraisal functions set it by default.
+ digest_type:= verity
+ Require fs-verity's file digest instead of the
+ regular IMA file hash.
keyrings:= list of keyrings
(eg, .builtin_trusted_keys|.ima). Only valid
when action is "measure" and func is KEY_CHECK.
@@ -149,3 +162,30 @@ Description:
security.ima xattr of a file:
appraise func=SETXATTR_CHECK appraise_algos=sha256,sha384,sha512
+
+ Example of a 'measure' rule requiring fs-verity's digests
+ with indication of type of digest in the measurement list.
+
+ measure func=FILE_CHECK digest_type=verity \
+ template=ima-ngv2
+
+ Example of 'measure' and 'appraise' rules requiring fs-verity
+ signatures (format version 3) stored in security.ima xattr.
+
+ The 'measure' rule specifies the 'ima-sigv3' template option,
+ which includes the indication of type of digest and the file
+ signature in the measurement list.
+
+ measure func=BPRM_CHECK digest_type=verity \
+ template=ima-sigv3
+
+
+ The 'appraise' rule specifies the type and signature format
+ version (sigv3) required.
+
+ appraise func=BPRM_CHECK digest_type=verity \
+ appraise_type=sigv3
+
+ All of these policy rules could, for example, be constrained
+ either based on a filesystem's UUID (fsuuid) or based on LSM
+ labels.
diff --git a/Documentation/ABI/testing/procfs-diskstats b/Documentation/ABI/testing/procfs-diskstats
index e58d641443d3..6a719cf2075c 100644
--- a/Documentation/ABI/testing/procfs-diskstats
+++ b/Documentation/ABI/testing/procfs-diskstats
@@ -8,7 +8,7 @@ Description:
== ===================================
1 major number
- 2 minor mumber
+ 2 minor number
3 device name
4 reads completed successfully
5 reads merged
diff --git a/Documentation/ABI/testing/procfs-smaps_rollup b/Documentation/ABI/testing/procfs-smaps_rollup
index a4e31c465194..b446a7154a1b 100644
--- a/Documentation/ABI/testing/procfs-smaps_rollup
+++ b/Documentation/ABI/testing/procfs-smaps_rollup
@@ -22,6 +22,7 @@ Description:
MMUPageSize: 4 kB
Rss: 884 kB
Pss: 385 kB
+ Pss_Dirty: 68 kB
Pss_Anon: 301 kB
Pss_File: 80 kB
Pss_Shmem: 4 kB
diff --git a/Documentation/ABI/testing/securityfs-secrets-coco b/Documentation/ABI/testing/securityfs-secrets-coco
new file mode 100644
index 000000000000..f2b6909155f9
--- /dev/null
+++ b/Documentation/ABI/testing/securityfs-secrets-coco
@@ -0,0 +1,51 @@
+What: security/secrets/coco
+Date: February 2022
+Contact: Dov Murik <dovmurik@linux.ibm.com>
+Description:
+ Exposes confidential computing (coco) EFI secrets to
+ userspace via securityfs.
+
+ EFI can declare memory area used by confidential computing
+ platforms (such as AMD SEV and SEV-ES) for secret injection by
+ the Guest Owner during VM's launch. The secrets are encrypted
+ by the Guest Owner and decrypted inside the trusted enclave,
+ and therefore are not readable by the untrusted host.
+
+ The efi_secret module exposes the secrets to userspace. Each
+ secret appears as a file under <securityfs>/secrets/coco,
+ where the filename is the GUID of the entry in the secrets
+ table. This module is loaded automatically by the EFI driver
+ if the EFI secret area is populated.
+
+ Two operations are supported for the files: read and unlink.
+ Reading the file returns the content of secret entry.
+ Unlinking the file overwrites the secret data with zeroes and
+ removes the entry from the filesystem. A secret cannot be read
+ after it has been unlinked.
+
+ For example, listing the available secrets::
+
+ # modprobe efi_secret
+ # ls -l /sys/kernel/security/secrets/coco
+ -r--r----- 1 root root 0 Jun 28 11:54 736870e5-84f0-4973-92ec-06879ce3da0b
+ -r--r----- 1 root root 0 Jun 28 11:54 83c83f7f-1356-4975-8b7e-d3a0b54312c6
+ -r--r----- 1 root root 0 Jun 28 11:54 9553f55d-3da2-43ee-ab5d-ff17f78864d2
+ -r--r----- 1 root root 0 Jun 28 11:54 e6f5a162-d67f-4750-a67c-5d065f2a9910
+
+ Reading the secret data by reading a file::
+
+ # cat /sys/kernel/security/secrets/coco/e6f5a162-d67f-4750-a67c-5d065f2a9910
+ the-content-of-the-secret-data
+
+ Wiping a secret by unlinking a file::
+
+ # rm /sys/kernel/security/secrets/coco/e6f5a162-d67f-4750-a67c-5d065f2a9910
+ # ls -l /sys/kernel/security/secrets/coco
+ -r--r----- 1 root root 0 Jun 28 11:54 736870e5-84f0-4973-92ec-06879ce3da0b
+ -r--r----- 1 root root 0 Jun 28 11:54 83c83f7f-1356-4975-8b7e-d3a0b54312c6
+ -r--r----- 1 root root 0 Jun 28 11:54 9553f55d-3da2-43ee-ab5d-ff17f78864d2
+
+ Note: The binary format of the secrets table injected by the
+ Guest Owner is described in
+ drivers/virt/coco/efi_secret/efi_secret.c under "Structure of
+ the EFI secret area".
diff --git a/Documentation/ABI/testing/sysfs-amd-pmc b/Documentation/ABI/testing/sysfs-amd-pmc
new file mode 100644
index 000000000000..c421b72844f1
--- /dev/null
+++ b/Documentation/ABI/testing/sysfs-amd-pmc
@@ -0,0 +1,13 @@
+What: /sys/bus/platform/drivers/amd_pmc/*/smu_fw_version
+Date: October 2022
+Contact: Mario Limonciello <mario.limonciello@amd.com>
+Description: Reading this file reports the version of the firmware loaded to
+ System Management Unit (SMU) contained in AMD CPUs and
+ APUs.
+
+What: /sys/bus/platform/drivers/amd_pmc/*/smu_program
+Date: October 2022
+Contact: Mario Limonciello <mario.limonciello@amd.com>
+Description: Reading this file reports the program corresponding to the SMU
+ firmware version. The program field is used to disambiguate two
+ APU/CPU models that can share the same firmware binary.
diff --git a/Documentation/ABI/testing/sysfs-amd-pmf b/Documentation/ABI/testing/sysfs-amd-pmf
new file mode 100644
index 000000000000..7fc0e1c2b76b
--- /dev/null
+++ b/Documentation/ABI/testing/sysfs-amd-pmf
@@ -0,0 +1,13 @@
+What: /sys/devices/platform/*/cnqf_enable
+Date: September 2022
+Contact: Shyam Sundar S K <Shyam-sundar.S-k@amd.com>
+Description: Reading this file tells if the AMD Platform Management(PMF)
+ Cool n Quiet Framework(CnQF) feature is enabled or not.
+
+ This feature is not enabled by default and gets only turned on
+ if OEM BIOS passes a "flag" to PMF ACPI function (index 11 or 12)
+ or in case the user writes "on".
+
+ To turn off CnQF user can write "off" to the sysfs node.
+ Note: Systems that support auto mode will not have this sysfs file
+ available.
diff --git a/Documentation/ABI/testing/sysfs-ata b/Documentation/ABI/testing/sysfs-ata
index 2f726c914752..3daecac48964 100644
--- a/Documentation/ABI/testing/sysfs-ata
+++ b/Documentation/ABI/testing/sysfs-ata
@@ -107,13 +107,14 @@ Description:
described in ATA8 7.16 and 7.17. Only valid if
the device is not a PM.
- pio_mode: (RO) Transfer modes supported by the device when
- in PIO mode. Mostly used by PATA device.
+ pio_mode: (RO) PIO transfer mode used by the device.
+ Mostly used by PATA devices.
- xfer_mode: (RO) Current transfer mode
+ xfer_mode: (RO) Current transfer mode. Mostly used by
+ PATA devices.
- dma_mode: (RO) Transfer modes supported by the device when
- in DMA mode. Mostly used by PATA device.
+ dma_mode: (RO) DMA transfer mode used by the device.
+ Mostly used by PATA devices.
class: (RO) Device class. Can be "ata" for disk,
"atapi" for packet device, "pmp" for PM, or
diff --git a/Documentation/ABI/testing/sysfs-auxdisplay-linedisp b/Documentation/ABI/testing/sysfs-auxdisplay-linedisp
new file mode 100644
index 000000000000..55f1b559e84e
--- /dev/null
+++ b/Documentation/ABI/testing/sysfs-auxdisplay-linedisp
@@ -0,0 +1,90 @@
+What: /sys/.../message
+Date: October 2021
+KernelVersion: 5.16
+Description:
+ Controls the text message displayed on character line displays.
+
+ Reading returns the current message with a trailing newline.
+ Writing updates the displayed message. Messages longer than the
+ display width will automatically scroll. Trailing newlines in
+ input are automatically trimmed.
+
+ Writing an empty string clears the display.
+
+ Example:
+ echo "Hello World" > message
+ cat message # Returns "Hello World\n"
+
+What: /sys/.../num_chars
+Date: November 2025
+KernelVersion: 6.18
+Contact: Jean-François Lessard <jefflessard3@gmail.com>
+Description:
+ Read-only attribute showing the character width capacity of
+ the line display device. Messages longer than this will scroll.
+
+ Example:
+ cat num_chars # Returns "16\n" for 16-char display
+
+What: /sys/.../scroll_step_ms
+Date: October 2021
+KernelVersion: 5.16
+Description:
+ Controls the scrolling speed for messages longer than the display
+ width, specified in milliseconds per scroll step.
+
+ Setting to 0 disables scrolling. Default is 500ms.
+
+ Example:
+ echo "250" > scroll_step_ms # 4Hz scrolling
+ cat scroll_step_ms # Returns "250\n"
+
+What: /sys/.../map_seg7
+Date: January 2024
+KernelVersion: 6.9
+Description:
+ Read/write binary blob representing the ASCII-to-7-segment
+ display conversion table used by the linedisp driver, as defined
+ by struct seg7_conversion_map in <linux/map_to_7segment.h>.
+
+ Only visible on displays with 7-segment capability.
+
+ This attribute is not human-readable. Writes must match the
+ struct size exactly, else -EINVAL is returned; reads return the
+ entire mapping as a binary blob.
+
+ This interface and its implementation match existing conventions
+ used in segment-mapped display drivers since 2005.
+
+ ABI note: This style of binary sysfs attribute *is an exception*
+ to current "one value per file, text only" sysfs rules, for
+ historical compatibility and driver uniformity. New drivers are
+ discouraged from introducing additional binary sysfs ABIs.
+
+ Reference interface guidance:
+ - include/uapi/linux/map_to_7segment.h
+
+What: /sys/.../map_seg14
+Date: January 2024
+KernelVersion: 6.9
+Description:
+ Read/write binary blob representing the ASCII-to-14-segment
+ display conversion table used by the linedisp driver, as defined
+ by struct seg14_conversion_map in <linux/map_to_14segment.h>.
+
+ Only visible on displays with 14-segment capability.
+
+ This attribute is not human-readable. Writes must match the
+ struct size exactly, else -EINVAL is returned; reads return the
+ entire mapping as a binary blob.
+
+ This interface and its implementation match existing conventions
+ used by segment-mapped display drivers since 2005.
+
+ ABI note: This style of binary sysfs attribute *is an exception*
+ to current "one value per file, text only" sysfs rules, for
+ historical compatibility and driver uniformity. New drivers are
+ discouraged from introducing additional binary sysfs ABIs.
+
+ Reference interface guidance:
+ - include/uapi/linux/map_to_14segment.h
diff --git a/Documentation/ABI/testing/sysfs-block-bcache b/Documentation/ABI/testing/sysfs-block-bcache
index 9e4bbc5d51fd..9344a657ca70 100644
--- a/Documentation/ABI/testing/sysfs-block-bcache
+++ b/Documentation/ABI/testing/sysfs-block-bcache
@@ -106,13 +106,6 @@ Description:
will be discarded from the cache. Should not be turned off with
writeback caching enabled.
-What: /sys/block/<disk>/bcache/discard
-Date: November 2010
-Contact: Kent Overstreet <kent.overstreet@gmail.com>
-Description:
- For a cache, a boolean allowing discard/TRIM to be turned off
- or back on if the device supports it.
-
What: /sys/block/<disk>/bcache/bucket_size
Date: November 2010
Contact: Kent Overstreet <kent.overstreet@gmail.com>
diff --git a/Documentation/ABI/testing/sysfs-block-device b/Documentation/ABI/testing/sysfs-block-device
index 7ac7b19b2f72..2d543cfa4079 100644
--- a/Documentation/ABI/testing/sysfs-block-device
+++ b/Documentation/ABI/testing/sysfs-block-device
@@ -95,3 +95,25 @@ Description:
This file does not exist if the HBA driver does not implement
support for the SATA NCQ priority feature, regardless of the
device support for this feature.
+
+
+What: /sys/block/*/device/cdl_supported
+Date: May, 2023
+KernelVersion: v6.5
+Contact: linux-scsi@vger.kernel.org
+Description:
+ (RO) Indicates if the device supports the command duration
+ limits feature found in some ATA and SCSI devices.
+
+
+What: /sys/block/*/device/cdl_enable
+Date: May, 2023
+KernelVersion: v6.5
+Contact: linux-scsi@vger.kernel.org
+Description:
+ (RW) For a device supporting the command duration limits
+ feature, write to the file to turn on or off the feature.
+ By default this feature is turned off.
+ Writing "1" to this file enables the use of command duration
+ limits for read and write commands in the kernel and turns on
+ the feature on the device. Writing "0" disables the feature.
diff --git a/Documentation/ABI/testing/sysfs-block-zram b/Documentation/ABI/testing/sysfs-block-zram
index 14b2bf2e5105..36c57de0a10a 100644
--- a/Documentation/ABI/testing/sysfs-block-zram
+++ b/Documentation/ABI/testing/sysfs-block-zram
@@ -22,14 +22,6 @@ Description:
device. The reset operation frees all the memory associated
with this device.
-What: /sys/block/zram<id>/max_comp_streams
-Date: February 2014
-Contact: Sergey Senozhatsky <sergey.senozhatsky@gmail.com>
-Description:
- The max_comp_streams file is read-write and specifies the
- number of backend's zcomp_strm compression streams (number of
- concurrent compress operations).
-
What: /sys/block/zram<id>/comp_algorithm
Date: February 2014
Contact: Sergey Senozhatsky <sergey.senozhatsky@gmail.com>
@@ -137,3 +129,24 @@ Description:
The writeback_limit file is read-write and specifies the maximum
amount of writeback ZRAM can do. The limit could be changed
in run time.
+
+What: /sys/block/zram<id>/recomp_algorithm
+Date: November 2022
+Contact: Sergey Senozhatsky <senozhatsky@chromium.org>
+Description:
+ The recomp_algorithm file is read-write and allows to set
+ or show secondary compression algorithms.
+
+What: /sys/block/zram<id>/recompress
+Date: November 2022
+Contact: Sergey Senozhatsky <senozhatsky@chromium.org>
+Description:
+ The recompress file is write-only and triggers re-compression
+ with secondary compression algorithms.
+
+What: /sys/block/zram<id>/algorithm_params
+Date: August 2024
+Contact: Sergey Senozhatsky <senozhatsky@chromium.org>
+Description:
+ The algorithm_params file is write-only and is used to setup
+ compression algorithm parameters.
diff --git a/Documentation/ABI/testing/sysfs-bus-acpi b/Documentation/ABI/testing/sysfs-bus-acpi
index 58abacf59b2a..6f2b907a8013 100644
--- a/Documentation/ABI/testing/sysfs-bus-acpi
+++ b/Documentation/ABI/testing/sysfs-bus-acpi
@@ -1,6 +1,6 @@
What: /sys/bus/acpi/devices/.../path
Date: December 2006
-Contact: Rafael J. Wysocki <rjw@rjwysocki.net>
+Contact: Rafael J. Wysocki <rafael@kernel.org>
Description:
This attribute indicates the full path of ACPI namespace
object associated with the device object. For example,
@@ -12,7 +12,7 @@ Description:
What: /sys/bus/acpi/devices/.../modalias
Date: July 2007
-Contact: Rafael J. Wysocki <rjw@rjwysocki.net>
+Contact: Rafael J. Wysocki <rafael@kernel.org>
Description:
This attribute indicates the PNP IDs of the device object.
That is acpi:HHHHHHHH:[CCCCCCC:]. Where each HHHHHHHH or
@@ -20,7 +20,7 @@ Description:
What: /sys/bus/acpi/devices/.../hid
Date: April 2005
-Contact: Rafael J. Wysocki <rjw@rjwysocki.net>
+Contact: Rafael J. Wysocki <rafael@kernel.org>
Description:
This attribute indicates the hardware ID (_HID) of the
device object. For example, PNP0103.
@@ -29,14 +29,14 @@ Description:
What: /sys/bus/acpi/devices/.../description
Date: October 2012
-Contact: Rafael J. Wysocki <rjw@rjwysocki.net>
+Contact: Rafael J. Wysocki <rafael@kernel.org>
Description:
This attribute contains the output of the device object's
_STR control method, if present.
What: /sys/bus/acpi/devices/.../adr
Date: October 2012
-Contact: Rafael J. Wysocki <rjw@rjwysocki.net>
+Contact: Rafael J. Wysocki <rafael@kernel.org>
Description:
This attribute contains the output of the device object's
_ADR control method, which is present for ACPI device
@@ -45,14 +45,14 @@ Description:
What: /sys/bus/acpi/devices/.../uid
Date: October 2012
-Contact: Rafael J. Wysocki <rjw@rjwysocki.net>
+Contact: Rafael J. Wysocki <rafael@kernel.org>
Description:
This attribute contains the output of the device object's
_UID control method, if present.
What: /sys/bus/acpi/devices/.../eject
Date: December 2006
-Contact: Rafael J. Wysocki <rjw@rjwysocki.net>
+Contact: Rafael J. Wysocki <rafael@kernel.org>
Description:
Writing 1 to this attribute will trigger hot removal of
this device object. This file exists for every device
@@ -60,7 +60,7 @@ Description:
What: /sys/bus/acpi/devices/.../status
Date: Jan, 2014
-Contact: Rafael J. Wysocki <rjw@rjwysocki.net>
+Contact: Rafael J. Wysocki <rafael@kernel.org>
Description:
(RO) Returns the ACPI device status: enabled, disabled or
functioning or present, if the method _STA is present.
@@ -90,7 +90,7 @@ Description:
What: /sys/bus/acpi/devices/.../hrv
Date: Apr, 2016
-Contact: Rafael J. Wysocki <rjw@rjwysocki.net>
+Contact: Rafael J. Wysocki <rafael@kernel.org>
Description:
(RO) Allows users to read the hardware version of non-PCI
hardware, if the _HRV control method is present. It is mostly
diff --git a/Documentation/ABI/testing/sysfs-bus-auxiliary b/Documentation/ABI/testing/sysfs-bus-auxiliary
new file mode 100644
index 000000000000..cc856079690f
--- /dev/null
+++ b/Documentation/ABI/testing/sysfs-bus-auxiliary
@@ -0,0 +1,9 @@
+What: /sys/bus/auxiliary/devices/.../irqs/
+Date: April, 2024
+Contact: Shay Drory <shayd@nvidia.com>
+Description:
+ The /sys/devices/.../irqs directory contains a variable set of
+ files, with each file is named as irq number similar to PCI PF
+ or VF's irq number located in msi_irqs directory.
+ These irq files are added and removed dynamically when an IRQ
+ is requested and freed respectively for the PCI SF.
diff --git a/Documentation/ABI/testing/sysfs-bus-bcma b/Documentation/ABI/testing/sysfs-bus-bcma
index 721b4aea3020..e93d3ddca844 100644
--- a/Documentation/ABI/testing/sysfs-bus-bcma
+++ b/Documentation/ABI/testing/sysfs-bus-bcma
@@ -3,7 +3,7 @@ Date: May 2011
KernelVersion: 3.0
Contact: Rafał Miłecki <zajec5@gmail.com>
Description:
- Each BCMA core has it's manufacturer id. See
+ Each BCMA core has its manufacturer id. See
include/linux/bcma/bcma.h for possible values.
What: /sys/bus/bcma/devices/.../id
diff --git a/Documentation/ABI/testing/sysfs-bus-cdx b/Documentation/ABI/testing/sysfs-bus-cdx
new file mode 100644
index 000000000000..e84277531414
--- /dev/null
+++ b/Documentation/ABI/testing/sysfs-bus-cdx
@@ -0,0 +1,121 @@
+What: /sys/bus/cdx/rescan
+Date: March 2023
+Contact: nipun.gupta@amd.com
+Description:
+ Writing y/1/on to this file will cause rescan of the bus
+ and devices on the CDX bus. Any new devices are scanned and
+ added to the list of Linux devices and any devices removed are
+ also deleted from Linux.
+
+ For example::
+
+ # echo 1 > /sys/bus/cdx/rescan
+
+What: /sys/bus/cdx/devices/.../vendor
+Date: March 2023
+Contact: nipun.gupta@amd.com
+Description:
+ Vendor ID for this CDX device, in hexadecimal. Vendor ID is
+ 16 bit identifier which is specific to the device manufacturer.
+ Combination of Vendor ID and Device ID identifies a device.
+
+What: /sys/bus/cdx/devices/.../device
+Date: March 2023
+Contact: nipun.gupta@amd.com
+Description:
+ Device ID for this CDX device, in hexadecimal. Device ID is
+ 16 bit identifier to identify a device type within the range
+ of a device manufacturer.
+ Combination of Vendor ID and Device ID identifies a device.
+
+What: /sys/bus/cdx/devices/.../subsystem_vendor
+Date: July 2023
+Contact: puneet.gupta@amd.com
+Description:
+ Subsystem Vendor ID for this CDX device, in hexadecimal.
+ Subsystem Vendor ID is 16 bit identifier specific to the
+ card manufacturer.
+
+What: /sys/bus/cdx/devices/.../subsystem_device
+Date: July 2023
+Contact: puneet.gupta@amd.com
+Description:
+ Subsystem Device ID for this CDX device, in hexadecimal
+ Subsystem Device ID is 16 bit identifier specific to the
+ card manufacturer.
+
+What: /sys/bus/cdx/devices/.../class
+Date: July 2023
+Contact: puneet.gupta@amd.com
+Description:
+ This file contains the class of the CDX device, in hexadecimal.
+ Class is 24 bit identifier specifies the functionality of the device.
+
+What: /sys/bus/cdx/devices/.../revision
+Date: July 2023
+Contact: puneet.gupta@amd.com
+Description:
+ This file contains the revision field of the CDX device, in hexadecimal.
+ Revision is 8 bit revision identifier of the device.
+
+What: /sys/bus/cdx/devices/.../enable
+Date: October 2023
+Contact: abhijit.gangurde@amd.com
+Description:
+ CDX bus should be disabled before updating the devices in FPGA.
+ Writing n/0/off will attempt to disable the CDX bus and.
+ writing y/1/on will attempt to enable the CDX bus. Reading this file
+ gives the current state of the bus, 1 for enabled and 0 for disabled.
+
+ For example::
+
+ # echo 1 > /sys/bus/cdx/.../enable
+
+What: /sys/bus/cdx/devices/.../reset
+Date: March 2023
+Contact: nipun.gupta@amd.com
+Description:
+ Writing y/1/on to this file resets the CDX device or all devices
+ on the bus. On resetting the device, the corresponding driver is
+ notified twice, once before the device is being reset, and again
+ after the reset has been complete.
+
+ For example::
+
+ # echo 1 > /sys/bus/cdx/.../reset
+
+What: /sys/bus/cdx/devices/.../remove
+Date: March 2023
+Contact: tarak.reddy@amd.com
+Description:
+ Writing y/1/on to this file removes the corresponding
+ device from the CDX bus. If the device is to be reconfigured
+ reconfigured in the Hardware, the device can be removed, so
+ that the device driver does not access the device while it is
+ being reconfigured.
+
+ For example::
+
+ # echo 1 > /sys/bus/cdx/devices/.../remove
+
+What: /sys/bus/cdx/devices/.../resource<N>
+Date: July 2023
+Contact: puneet.gupta@amd.com
+Description:
+ The resource binary file contains the content of the memory
+ regions. These files can be m'maped from userspace.
+
+What: /sys/bus/cdx/devices/.../modalias
+Date: July 2023
+Contact: nipun.gupta@amd.com
+Description:
+ This attribute indicates the CDX ID of the device.
+ That is in the format:
+ cdx:vXXXXdXXXXsvXXXXsdXXXXcXXXXXX,
+ where:
+
+ - vXXXX contains the vendor ID;
+ - dXXXX contains the device ID;
+ - svXXXX contains the subsystem vendor ID;
+ - sdXXXX contains the subsystem device ID;
+ - cXXXXXX contains the device class.
diff --git a/Documentation/ABI/testing/sysfs-bus-coreboot b/Documentation/ABI/testing/sysfs-bus-coreboot
new file mode 100644
index 000000000000..8e8d6af24a4c
--- /dev/null
+++ b/Documentation/ABI/testing/sysfs-bus-coreboot
@@ -0,0 +1,45 @@
+What: /sys/bus/coreboot
+Date: August 2022
+Contact: Jack Rosenthal <jrosenth@chromium.org>
+Description:
+ The coreboot bus provides a variety of virtual devices used to
+ access data structures created by the Coreboot BIOS.
+
+What: /sys/bus/coreboot/devices/cbmem-<id>
+Date: August 2022
+Contact: Jack Rosenthal <jrosenth@chromium.org>
+Description:
+ CBMEM is a downwards-growing memory region created by Coreboot,
+ and contains tagged data structures to be shared with payloads
+ in the boot process and the OS. Each CBMEM entry is given a
+ directory in /sys/bus/coreboot/devices based on its id.
+ A list of ids known to Coreboot can be found in the coreboot
+ source tree at
+ ``src/commonlib/bsd/include/commonlib/bsd/cbmem_id.h``.
+
+What: /sys/bus/coreboot/devices/cbmem-<id>/address
+Date: August 2022
+Contact: Jack Rosenthal <jrosenth@chromium.org>
+Description:
+ This is the physical memory address that the CBMEM entry's data
+ begins at, in hexadecimal (e.g., ``0x76ffe000``).
+
+What: /sys/bus/coreboot/devices/cbmem-<id>/size
+Date: August 2022
+Contact: Jack Rosenthal <jrosenth@chromium.org>
+Description:
+ This is the size of the CBMEM entry's data, in hexadecimal
+ (e.g., ``0x1234``).
+
+What: /sys/bus/coreboot/devices/cbmem-<id>/mem
+Date: August 2022
+Contact: Jack Rosenthal <jrosenth@chromium.org>
+Description:
+ A file exposing read/write access to the entry's data. Note
+ that this file does not support mmap(), as coreboot
+ does not guarantee that the data will be page-aligned.
+
+ The mode of this file is 0600. While there shouldn't be
+ anything security-sensitive contained in CBMEM, read access
+ requires root privileges given this is exposing a small subset
+ of physical memory.
diff --git a/Documentation/ABI/testing/sysfs-bus-coresight-devices-cti b/Documentation/ABI/testing/sysfs-bus-coresight-devices-cti
index bf2869c413e7..a2aef7f5a6d7 100644
--- a/Documentation/ABI/testing/sysfs-bus-coresight-devices-cti
+++ b/Documentation/ABI/testing/sysfs-bus-coresight-devices-cti
@@ -1,241 +1,247 @@
What: /sys/bus/coresight/devices/<cti-name>/enable
Date: March 2020
-KernelVersion 5.7
+KernelVersion: 5.7
Contact: Mike Leach or Mathieu Poirier
Description: (RW) Enable/Disable the CTI hardware.
What: /sys/bus/coresight/devices/<cti-name>/powered
Date: March 2020
-KernelVersion 5.7
+KernelVersion: 5.7
Contact: Mike Leach or Mathieu Poirier
Description: (Read) Indicate if the CTI hardware is powered.
What: /sys/bus/coresight/devices/<cti-name>/ctmid
Date: March 2020
-KernelVersion 5.7
+KernelVersion: 5.7
Contact: Mike Leach or Mathieu Poirier
Description: (Read) Display the associated CTM ID
What: /sys/bus/coresight/devices/<cti-name>/nr_trigger_cons
Date: March 2020
-KernelVersion 5.7
+KernelVersion: 5.7
Contact: Mike Leach or Mathieu Poirier
Description: (Read) Number of devices connected to triggers on this CTI
What: /sys/bus/coresight/devices/<cti-name>/triggers<N>/name
Date: March 2020
-KernelVersion 5.7
+KernelVersion: 5.7
Contact: Mike Leach or Mathieu Poirier
Description: (Read) Name of connected device <N>
What: /sys/bus/coresight/devices/<cti-name>/triggers<N>/in_signals
Date: March 2020
-KernelVersion 5.7
+KernelVersion: 5.7
Contact: Mike Leach or Mathieu Poirier
Description: (Read) Input trigger signals from connected device <N>
What: /sys/bus/coresight/devices/<cti-name>/triggers<N>/in_types
Date: March 2020
-KernelVersion 5.7
+KernelVersion: 5.7
Contact: Mike Leach or Mathieu Poirier
Description: (Read) Functional types for the input trigger signals
from connected device <N>
What: /sys/bus/coresight/devices/<cti-name>/triggers<N>/out_signals
Date: March 2020
-KernelVersion 5.7
+KernelVersion: 5.7
Contact: Mike Leach or Mathieu Poirier
Description: (Read) Output trigger signals to connected device <N>
What: /sys/bus/coresight/devices/<cti-name>/triggers<N>/out_types
Date: March 2020
-KernelVersion 5.7
+KernelVersion: 5.7
Contact: Mike Leach or Mathieu Poirier
Description: (Read) Functional types for the output trigger signals
to connected device <N>
What: /sys/bus/coresight/devices/<cti-name>/regs/inout_sel
Date: March 2020
-KernelVersion 5.7
+KernelVersion: 5.7
Contact: Mike Leach or Mathieu Poirier
Description: (RW) Select the index for inen and outen registers.
What: /sys/bus/coresight/devices/<cti-name>/regs/inen
Date: March 2020
-KernelVersion 5.7
+KernelVersion: 5.7
Contact: Mike Leach or Mathieu Poirier
Description: (RW) Read or write the CTIINEN register selected by inout_sel.
What: /sys/bus/coresight/devices/<cti-name>/regs/outen
Date: March 2020
-KernelVersion 5.7
+KernelVersion: 5.7
Contact: Mike Leach or Mathieu Poirier
Description: (RW) Read or write the CTIOUTEN register selected by inout_sel.
What: /sys/bus/coresight/devices/<cti-name>/regs/gate
Date: March 2020
-KernelVersion 5.7
+KernelVersion: 5.7
Contact: Mike Leach or Mathieu Poirier
Description: (RW) Read or write CTIGATE register.
What: /sys/bus/coresight/devices/<cti-name>/regs/asicctl
Date: March 2020
-KernelVersion 5.7
+KernelVersion: 5.7
Contact: Mike Leach or Mathieu Poirier
Description: (RW) Read or write ASICCTL register.
What: /sys/bus/coresight/devices/<cti-name>/regs/intack
Date: March 2020
-KernelVersion 5.7
+KernelVersion: 5.7
Contact: Mike Leach or Mathieu Poirier
Description: (Write) Write the INTACK register.
What: /sys/bus/coresight/devices/<cti-name>/regs/appset
Date: March 2020
-KernelVersion 5.7
+KernelVersion: 5.7
Contact: Mike Leach or Mathieu Poirier
Description: (RW) Set CTIAPPSET register to activate channel. Read back to
determine current value of register.
What: /sys/bus/coresight/devices/<cti-name>/regs/appclear
Date: March 2020
-KernelVersion 5.7
+KernelVersion: 5.7
Contact: Mike Leach or Mathieu Poirier
Description: (Write) Write APPCLEAR register to deactivate channel.
What: /sys/bus/coresight/devices/<cti-name>/regs/apppulse
Date: March 2020
-KernelVersion 5.7
+KernelVersion: 5.7
Contact: Mike Leach or Mathieu Poirier
Description: (Write) Write APPPULSE to pulse a channel active for one clock
cycle.
What: /sys/bus/coresight/devices/<cti-name>/regs/chinstatus
Date: March 2020
-KernelVersion 5.7
+KernelVersion: 5.7
Contact: Mike Leach or Mathieu Poirier
Description: (Read) Read current status of channel inputs.
What: /sys/bus/coresight/devices/<cti-name>/regs/choutstatus
Date: March 2020
-KernelVersion 5.7
+KernelVersion: 5.7
Contact: Mike Leach or Mathieu Poirier
Description: (Read) read current status of channel outputs.
What: /sys/bus/coresight/devices/<cti-name>/regs/triginstatus
Date: March 2020
-KernelVersion 5.7
+KernelVersion: 5.7
Contact: Mike Leach or Mathieu Poirier
Description: (Read) read current status of input trigger signals
What: /sys/bus/coresight/devices/<cti-name>/regs/trigoutstatus
Date: March 2020
-KernelVersion 5.7
+KernelVersion: 5.7
Contact: Mike Leach or Mathieu Poirier
Description: (Read) read current status of output trigger signals.
What: /sys/bus/coresight/devices/<cti-name>/channels/trigin_attach
Date: March 2020
-KernelVersion 5.7
+KernelVersion: 5.7
Contact: Mike Leach or Mathieu Poirier
Description: (Write) Attach a CTI input trigger to a CTM channel.
What: /sys/bus/coresight/devices/<cti-name>/channels/trigin_detach
Date: March 2020
-KernelVersion 5.7
+KernelVersion: 5.7
Contact: Mike Leach or Mathieu Poirier
Description: (Write) Detach a CTI input trigger from a CTM channel.
What: /sys/bus/coresight/devices/<cti-name>/channels/trigout_attach
Date: March 2020
-KernelVersion 5.7
+KernelVersion: 5.7
Contact: Mike Leach or Mathieu Poirier
Description: (Write) Attach a CTI output trigger to a CTM channel.
What: /sys/bus/coresight/devices/<cti-name>/channels/trigout_detach
Date: March 2020
-KernelVersion 5.7
+KernelVersion: 5.7
Contact: Mike Leach or Mathieu Poirier
Description: (Write) Detach a CTI output trigger from a CTM channel.
What: /sys/bus/coresight/devices/<cti-name>/channels/chan_gate_enable
Date: March 2020
-KernelVersion 5.7
+KernelVersion: 5.7
Contact: Mike Leach or Mathieu Poirier
Description: (RW) Enable CTIGATE for single channel (Write) or list enabled
channels through the gate (R).
What: /sys/bus/coresight/devices/<cti-name>/channels/chan_gate_disable
Date: March 2020
-KernelVersion 5.7
+KernelVersion: 5.7
Contact: Mike Leach or Mathieu Poirier
Description: (Write) Disable CTIGATE for single channel.
What: /sys/bus/coresight/devices/<cti-name>/channels/chan_set
Date: March 2020
-KernelVersion 5.7
+KernelVersion: 5.7
Contact: Mike Leach or Mathieu Poirier
Description: (Write) Activate a single channel.
What: /sys/bus/coresight/devices/<cti-name>/channels/chan_clear
Date: March 2020
-KernelVersion 5.7
+KernelVersion: 5.7
Contact: Mike Leach or Mathieu Poirier
Description: (Write) Deactivate a single channel.
What: /sys/bus/coresight/devices/<cti-name>/channels/chan_pulse
Date: March 2020
-KernelVersion 5.7
+KernelVersion: 5.7
Contact: Mike Leach or Mathieu Poirier
Description: (Write) Pulse a single channel - activate for a single clock cycle.
What: /sys/bus/coresight/devices/<cti-name>/channels/trigout_filtered
Date: March 2020
-KernelVersion 5.7
+KernelVersion: 5.7
Contact: Mike Leach or Mathieu Poirier
Description: (Read) List of output triggers filtered across all connections.
What: /sys/bus/coresight/devices/<cti-name>/channels/trig_filter_enable
Date: March 2020
-KernelVersion 5.7
+KernelVersion: 5.7
Contact: Mike Leach or Mathieu Poirier
Description: (RW) Enable or disable trigger output signal filtering.
What: /sys/bus/coresight/devices/<cti-name>/channels/chan_inuse
Date: March 2020
-KernelVersion 5.7
+KernelVersion: 5.7
Contact: Mike Leach or Mathieu Poirier
Description: (Read) show channels with at least one attached trigger signal.
What: /sys/bus/coresight/devices/<cti-name>/channels/chan_free
Date: March 2020
-KernelVersion 5.7
+KernelVersion: 5.7
Contact: Mike Leach or Mathieu Poirier
Description: (Read) show channels with no attached trigger signals.
What: /sys/bus/coresight/devices/<cti-name>/channels/chan_xtrigs_sel
Date: March 2020
-KernelVersion 5.7
+KernelVersion: 5.7
Contact: Mike Leach or Mathieu Poirier
Description: (RW) Write channel number to select a channel to view, read to
see selected channel number.
What: /sys/bus/coresight/devices/<cti-name>/channels/chan_xtrigs_in
Date: March 2020
-KernelVersion 5.7
+KernelVersion: 5.7
Contact: Mike Leach or Mathieu Poirier
Description: (Read) Read to see input triggers connected to selected view
channel.
What: /sys/bus/coresight/devices/<cti-name>/channels/chan_xtrigs_out
Date: March 2020
-KernelVersion 5.7
+KernelVersion: 5.7
Contact: Mike Leach or Mathieu Poirier
Description: (Read) Read to see output triggers connected to selected view
channel.
What: /sys/bus/coresight/devices/<cti-name>/channels/chan_xtrigs_reset
Date: March 2020
-KernelVersion 5.7
+KernelVersion: 5.7
Contact: Mike Leach or Mathieu Poirier
Description: (Write) Clear all channel / trigger programming.
+
+What: /sys/bus/coresight/devices/<cti-name>/label
+Date: Aug 2025
+KernelVersion 6.18
+Contact: Mao Jinlong <quic_jinlmao@quicinc.com>
+Description: (Read) Show hardware context information of device.
diff --git a/Documentation/ABI/testing/sysfs-bus-coresight-devices-dummy-source b/Documentation/ABI/testing/sysfs-bus-coresight-devices-dummy-source
new file mode 100644
index 000000000000..321e3ee1fc9d
--- /dev/null
+++ b/Documentation/ABI/testing/sysfs-bus-coresight-devices-dummy-source
@@ -0,0 +1,21 @@
+What: /sys/bus/coresight/devices/dummy_source<N>/enable_source
+Date: Dec 2024
+KernelVersion: 6.14
+Contact: Mao Jinlong <quic_jinlmao@quicinc.com>
+Description: (RW) Enable/disable tracing of dummy source. A sink should be activated
+ before enabling the source. The path of coresight components linking
+ the source to the sink is configured and managed automatically by the
+ coresight framework.
+
+What: /sys/bus/coresight/devices/dummy_source<N>/traceid
+Date: Dec 2024
+KernelVersion: 6.14
+Contact: Mao Jinlong <quic_jinlmao@quicinc.com>
+Description: (R) Show the trace ID that will appear in the trace stream
+ coming from this trace entity.
+
+What: /sys/bus/coresight/devices/dummy_source<N>/label
+Date: Aug 2025
+KernelVersion 6.18
+Contact: Mao Jinlong <quic_jinlmao@quicinc.com>
+Description: (Read) Show hardware context information of device.
diff --git a/Documentation/ABI/testing/sysfs-bus-coresight-devices-etb10 b/Documentation/ABI/testing/sysfs-bus-coresight-devices-etb10
index 9a383f6a74eb..f30526949687 100644
--- a/Documentation/ABI/testing/sysfs-bus-coresight-devices-etb10
+++ b/Documentation/ABI/testing/sysfs-bus-coresight-devices-etb10
@@ -19,6 +19,12 @@ Description: (RW) Disables write access to the Trace RAM by stopping the
into the Trace RAM following the trigger event is equal to the
value stored in this register+1 (from ARM ETB-TRM).
+What: /sys/bus/coresight/devices/<memory_map>.etb/label
+Date: Aug 2025
+KernelVersion 6.18
+Contact: Mao Jinlong <quic_jinlmao@quicinc.com>
+Description: (Read) Show hardware context information of device.
+
What: /sys/bus/coresight/devices/<memory_map>.etb/mgmt/rdp
Date: March 2016
KernelVersion: 4.7
diff --git a/Documentation/ABI/testing/sysfs-bus-coresight-devices-etm3x b/Documentation/ABI/testing/sysfs-bus-coresight-devices-etm3x
index 651602a61eac..245c322c91f1 100644
--- a/Documentation/ABI/testing/sysfs-bus-coresight-devices-etm3x
+++ b/Documentation/ABI/testing/sysfs-bus-coresight-devices-etm3x
@@ -22,7 +22,7 @@ Contact: Mathieu Poirier <mathieu.poirier@linaro.org>
Description: (RW) Used in conjunction with @addr_idx. Specifies
characteristics about the address comparator being configure,
for example the access type, the kind of instruction to trace,
- processor contect ID to trigger on, etc. Individual fields in
+ processor context ID to trigger on, etc. Individual fields in
the access type register may vary on the version of the trace
entity.
@@ -31,7 +31,7 @@ Date: November 2014
KernelVersion: 3.19
Contact: Mathieu Poirier <mathieu.poirier@linaro.org>
Description: (RW) Used in conjunction with @addr_idx. Specifies the range of
- addresses to trigger on. Inclusion or exclusion is specificed
+ addresses to trigger on. Inclusion or exclusion is specified
in the corresponding access type register.
What: /sys/bus/coresight/devices/<memory_map>.[etm|ptm]/addr_single
@@ -236,7 +236,7 @@ What: /sys/bus/coresight/devices/<memory_map>.[etm|ptm]/traceid
Date: November 2014
KernelVersion: 3.19
Contact: Mathieu Poirier <mathieu.poirier@linaro.org>
-Description: (RW) Holds the trace ID that will appear in the trace stream
+Description: (RO) Holds the trace ID that will appear in the trace stream
coming from this trace entity.
What: /sys/bus/coresight/devices/<memory_map>.[etm|ptm]/trigger_event
@@ -251,6 +251,12 @@ KernelVersion: 4.4
Contact: Mathieu Poirier <mathieu.poirier@linaro.org>
Description: (RO) Holds the cpu number this tracer is affined to.
+What: /sys/bus/coresight/devices/<memory_map>.[etm|ptm]/label
+Date: Aug 2025
+KernelVersion 6.18
+Contact: Mao Jinlong <quic_jinlmao@quicinc.com>
+Description: (Read) Show hardware context information of device.
+
What: /sys/bus/coresight/devices/<memory_map>.[etm|ptm]/mgmt/etmccr
Date: September 2015
KernelVersion: 4.4
@@ -304,19 +310,19 @@ What: /sys/bus/coresight/devices/<memory_map>.[etm|ptm]/mgmt/etmtsscr
Date: September 2015
KernelVersion: 4.4
Contact: Mathieu Poirier <mathieu.poirier@linaro.org>
-Description: (RO) Print the content of the ETM Trace Start/Stop Conrol
+Description: (RO) Print the content of the ETM Trace Start/Stop Control
register (0x018). The value is read directly from the HW.
What: /sys/bus/coresight/devices/<memory_map>.[etm|ptm]/mgmt/etmtecr1
Date: September 2015
KernelVersion: 4.4
Contact: Mathieu Poirier <mathieu.poirier@linaro.org>
-Description: (RO) Print the content of the ETM Enable Conrol #1
+Description: (RO) Print the content of the ETM Enable Control #1
register (0x024). The value is read directly from the HW.
What: /sys/bus/coresight/devices/<memory_map>.[etm|ptm]/mgmt/etmtecr2
Date: September 2015
KernelVersion: 4.4
Contact: Mathieu Poirier <mathieu.poirier@linaro.org>
-Description: (RO) Print the content of the ETM Enable Conrol #2
+Description: (RO) Print the content of the ETM Enable Control #2
register (0x01c). The value is read directly from the HW.
diff --git a/Documentation/ABI/testing/sysfs-bus-coresight-devices-etm4x b/Documentation/ABI/testing/sysfs-bus-coresight-devices-etm4x
index 8e53a32f8150..6f19a6a5f2e1 100644
--- a/Documentation/ABI/testing/sysfs-bus-coresight-devices-etm4x
+++ b/Documentation/ABI/testing/sysfs-bus-coresight-devices-etm4x
@@ -329,6 +329,12 @@ Contact: Mathieu Poirier <mathieu.poirier@linaro.org>
Description: (RW) Access the selected single show PE comparator control
register.
+What: /sys/bus/coresight/devices/etm<N>/label
+Date: Aug 2025
+KernelVersion 6.18
+Contact: Mao Jinlong <quic_jinlmao@quicinc.com>
+Description: (Read) Show hardware context information of device.
+
What: /sys/bus/coresight/devices/etm<N>/mgmt/trcoslsr
Date: April 2015
KernelVersion: 4.01
@@ -446,7 +452,7 @@ Date: April 2015
KernelVersion: 4.01
Contact: Mathieu Poirier <mathieu.poirier@linaro.org>
Description: (Read) Returns the maximum size of the data value, data address,
- VMID, context ID and instuction address in the trace unit
+ VMID, context ID and instruction address in the trace unit
(0x1E8). The value is taken directly from the HW.
What: /sys/bus/coresight/devices/etm<N>/trcidr/trcidr3
@@ -516,3 +522,11 @@ Contact: Mathieu Poirier <mathieu.poirier@linaro.org>
Description: (Read) Returns the number of special conditional P1 right-hand keys
that the trace unit can use (0x194). The value is taken
directly from the HW.
+
+What: /sys/bus/coresight/devices/etm<N>/ts_source
+Date: October 2022
+KernelVersion: 6.1
+Contact: Mathieu Poirier <mathieu.poirier@linaro.org> or Suzuki K Poulose <suzuki.poulose@arm.com>
+Description: (Read) When FEAT_TRF is implemented, value of TRFCR_ELx.TS used for
+ trace session. Otherwise -1 indicates an unknown time source. Check
+ trcidr0.tssize to see if a global timestamp is available.
diff --git a/Documentation/ABI/testing/sysfs-bus-coresight-devices-funnel b/Documentation/ABI/testing/sysfs-bus-coresight-devices-funnel
index d75acda5e1b3..86938e9bbcde 100644
--- a/Documentation/ABI/testing/sysfs-bus-coresight-devices-funnel
+++ b/Documentation/ABI/testing/sysfs-bus-coresight-devices-funnel
@@ -10,3 +10,9 @@ Date: November 2014
KernelVersion: 3.19
Contact: Mathieu Poirier <mathieu.poirier@linaro.org>
Description: (RW) Defines input port priority order.
+
+What: /sys/bus/coresight/devices/<memory_map>.funnel/label
+Date: Aug 2025
+KernelVersion 6.18
+Contact: Mao Jinlong <quic_jinlmao@quicinc.com>
+Description: (Read) Show hardware context information of device.
diff --git a/Documentation/ABI/testing/sysfs-bus-coresight-devices-stm b/Documentation/ABI/testing/sysfs-bus-coresight-devices-stm
index 53e1f4815d64..848e2ffc1480 100644
--- a/Documentation/ABI/testing/sysfs-bus-coresight-devices-stm
+++ b/Documentation/ABI/testing/sysfs-bus-coresight-devices-stm
@@ -51,3 +51,9 @@ KernelVersion: 4.7
Contact: Mathieu Poirier <mathieu.poirier@linaro.org>
Description: (RW) Holds the trace ID that will appear in the trace stream
coming from this trace entity.
+
+What: /sys/bus/coresight/devices/<memory_map>.stm/label
+Date: Aug 2025
+KernelVersion 6.18
+Contact: Mao Jinlong <quic_jinlmao@quicinc.com>
+Description: (Read) Show hardware context information of device.
diff --git a/Documentation/ABI/testing/sysfs-bus-coresight-devices-tmc b/Documentation/ABI/testing/sysfs-bus-coresight-devices-tmc
index 6aa527296c71..55e298b9c4a4 100644
--- a/Documentation/ABI/testing/sysfs-bus-coresight-devices-tmc
+++ b/Documentation/ABI/testing/sysfs-bus-coresight-devices-tmc
@@ -91,3 +91,25 @@ Contact: Mathieu Poirier <mathieu.poirier@linaro.org>
Description: (RW) Size of the trace buffer for TMC-ETR when used in SYSFS
mode. Writable only for TMC-ETR configurations. The value
should be aligned to the kernel pagesize.
+
+What: /sys/bus/coresight/devices/<memory_map>.tmc/buf_modes_available
+Date: August 2023
+KernelVersion: 6.7
+Contact: Anshuman Khandual <anshuman.khandual@arm.com>
+Description: (Read) Shows all supported Coresight TMC-ETR buffer modes available
+ for the users to configure explicitly. This file is available only
+ for TMC ETR devices.
+
+What: /sys/bus/coresight/devices/<memory_map>.tmc/buf_mode_preferred
+Date: August 2023
+KernelVersion: 6.7
+Contact: Anshuman Khandual <anshuman.khandual@arm.com>
+Description: (RW) Current Coresight TMC-ETR buffer mode selected. But user could
+ only provide a mode which is supported for a given ETR device. This
+ file is available only for TMC ETR devices.
+
+What: /sys/bus/coresight/devices/<memory_map>.tmc/label
+Date: Aug 2025
+KernelVersion 6.18
+Contact: Mao Jinlong <quic_jinlmao@quicinc.com>
+Description: (Read) Show hardware context information of device.
diff --git a/Documentation/ABI/testing/sysfs-bus-coresight-devices-tpdm b/Documentation/ABI/testing/sysfs-bus-coresight-devices-tpdm
new file mode 100644
index 000000000000..98f1c6545027
--- /dev/null
+++ b/Documentation/ABI/testing/sysfs-bus-coresight-devices-tpdm
@@ -0,0 +1,280 @@
+What: /sys/bus/coresight/devices/<tpdm-name>/integration_test
+Date: January 2023
+KernelVersion: 6.2
+Contact: Jinlong Mao (QUIC) <quic_jinlmao@quicinc.com>, Tao Zhang (QUIC) <quic_taozha@quicinc.com>
+Description:
+ (Write) Run integration test for tpdm. Integration test
+ will generate test data for tpdm. It can help to make
+ sure that the trace path is enabled and the link configurations
+ are fine.
+
+ Accepts only one of the 2 values - 1 or 2.
+ 1 : Generate 64 bits data
+ 2 : Generate 32 bits data
+
+What: /sys/bus/coresight/devices/<tpdm-name>/reset_dataset
+Date: March 2023
+KernelVersion: 6.7
+Contact: Jinlong Mao (QUIC) <quic_jinlmao@quicinc.com>, Tao Zhang (QUIC) <quic_taozha@quicinc.com>
+Description:
+ (Write) Reset the dataset of the tpdm.
+
+ Accepts only one value - 1.
+ 1 : Reset the dataset of the tpdm
+
+What: /sys/bus/coresight/devices/<tpdm-name>/dsb_trig_type
+Date: March 2023
+KernelVersion: 6.7
+Contact: Jinlong Mao (QUIC) <quic_jinlmao@quicinc.com>, Tao Zhang (QUIC) <quic_taozha@quicinc.com>
+Description:
+ (RW) Set/Get the trigger type of the DSB for tpdm.
+
+ Accepts only one of the 2 values - 0 or 1.
+ 0 : Set the DSB trigger type to false
+ 1 : Set the DSB trigger type to true
+
+What: /sys/bus/coresight/devices/<tpdm-name>/dsb_trig_ts
+Date: March 2023
+KernelVersion: 6.7
+Contact: Jinlong Mao (QUIC) <quic_jinlmao@quicinc.com>, Tao Zhang (QUIC) <quic_taozha@quicinc.com>
+Description:
+ (RW) Set/Get the trigger timestamp of the DSB for tpdm.
+
+ Accepts only one of the 2 values - 0 or 1.
+ 0 : Set the DSB trigger type to false
+ 1 : Set the DSB trigger type to true
+
+What: /sys/bus/coresight/devices/<tpdm-name>/dsb_mode
+Date: March 2023
+KernelVersion: 6.7
+Contact: Jinlong Mao (QUIC) <quic_jinlmao@quicinc.com>, Tao Zhang (QUIC) <quic_taozha@quicinc.com>
+Description:
+ (RW) Set/Get the programming mode of the DSB for tpdm.
+
+ Accepts the value needs to be greater than 0. What data
+ bits do is listed below.
+ Bit[0:1] : Test mode control bit for choosing the inputs.
+ Bit[3] : Set to 0 for low performance mode. Set to 1 for high
+ performance mode.
+ Bit[4:8] : Select byte lane for high performance mode.
+
+What: /sys/bus/coresight/devices/<tpdm-name>/dsb_edge/ctrl_idx
+Date: March 2023
+KernelVersion: 6.7
+Contact: Jinlong Mao (QUIC) <quic_jinlmao@quicinc.com>, Tao Zhang (QUIC) <quic_taozha@quicinc.com>
+Description:
+ (RW) Set/Get the index number of the edge detection for the DSB
+ subunit TPDM. Since there are at most 256 edge detections, this
+ value ranges from 0 to 255.
+
+What: /sys/bus/coresight/devices/<tpdm-name>/dsb_edge/ctrl_val
+Date: March 2023
+KernelVersion: 6.7
+Contact: Jinlong Mao (QUIC) <quic_jinlmao@quicinc.com>, Tao Zhang (QUIC) <quic_taozha@quicinc.com>
+Description:
+ Write a data to control the edge detection corresponding to
+ the index number. Before writing data to this sysfs file,
+ "ctrl_idx" should be written first to configure the index
+ number of the edge detection which needs to be controlled.
+
+ Accepts only one of the following values.
+ 0 - Rising edge detection
+ 1 - Falling edge detection
+ 2 - Rising and falling edge detection (toggle detection)
+
+
+What: /sys/bus/coresight/devices/<tpdm-name>/dsb_edge/ctrl_mask
+Date: March 2023
+KernelVersion: 6.7
+Contact: Jinlong Mao (QUIC) <quic_jinlmao@quicinc.com>, Tao Zhang (QUIC) <quic_taozha@quicinc.com>
+Description:
+ Write a data to mask the edge detection corresponding to the index
+ number. Before writing data to this sysfs file, "ctrl_idx" should
+ be written first to configure the index number of the edge detection
+ which needs to be masked.
+
+ Accepts only one of the 2 values - 0 or 1.
+
+What: /sys/bus/coresight/devices/<tpdm-name>/dsb_edge/edcr[0:15]
+Date: March 2023
+KernelVersion: 6.7
+Contact: Jinlong Mao (QUIC) <quic_jinlmao@quicinc.com>, Tao Zhang (QUIC) <quic_taozha@quicinc.com>
+Description:
+ Read a set of the edge control value of the DSB in TPDM.
+
+What: /sys/bus/coresight/devices/<tpdm-name>/dsb_edge/edcmr[0:7]
+Date: March 2023
+KernelVersion: 6.7
+Contact: Jinlong Mao (QUIC) <quic_jinlmao@quicinc.com>, Tao Zhang (QUIC) <quic_taozha@quicinc.com>
+Description:
+ Read a set of the edge control mask of the DSB in TPDM.
+
+What: /sys/bus/coresight/devices/<tpdm-name>/dsb_trig_patt/xpr[0:7]
+Date: March 2023
+KernelVersion: 6.7
+Contact: Jinlong Mao (QUIC) <quic_jinlmao@quicinc.com>, Tao Zhang (QUIC) <quic_taozha@quicinc.com>
+Description:
+ (RW) Set/Get the value of the trigger pattern for the DSB
+ subunit TPDM.
+
+What: /sys/bus/coresight/devices/<tpdm-name>/dsb_trig_patt/xpmr[0:7]
+Date: March 2023
+KernelVersion: 6.7
+Contact: Jinlong Mao (QUIC) <quic_jinlmao@quicinc.com>, Tao Zhang (QUIC) <quic_taozha@quicinc.com>
+Description:
+ (RW) Set/Get the mask of the trigger pattern for the DSB
+ subunit TPDM.
+
+What: /sys/bus/coresight/devices/<tpdm-name>/dsb_patt/tpr[0:7]
+Date: March 2023
+KernelVersion: 6.7
+Contact: Jinlong Mao (QUIC) <quic_jinlmao@quicinc.com>, Tao Zhang (QUIC) <quic_taozha@quicinc.com>
+Description:
+ (RW) Set/Get the value of the pattern for the DSB subunit TPDM.
+
+What: /sys/bus/coresight/devices/<tpdm-name>/dsb_patt/tpmr[0:7]
+Date: March 2023
+KernelVersion: 6.7
+Contact: Jinlong Mao (QUIC) <quic_jinlmao@quicinc.com>, Tao Zhang (QUIC) <quic_taozha@quicinc.com>
+Description:
+ (RW) Set/Get the mask of the pattern for the DSB subunit TPDM.
+
+What: /sys/bus/coresight/devices/<tpdm-name>/dsb_patt/enable_ts
+Date: March 2023
+KernelVersion: 6.7
+Contact: Jinlong Mao (QUIC) <quic_jinlmao@quicinc.com>, Tao Zhang (QUIC) <quic_taozha@quicinc.com>
+Description:
+ (Write) Set the pattern timestamp of DSB tpdm. Read
+ the pattern timestamp of DSB tpdm.
+
+ Accepts only one of the 2 values - 0 or 1.
+ 0 : Disable DSB pattern timestamp.
+ 1 : Enable DSB pattern timestamp.
+
+What: /sys/bus/coresight/devices/<tpdm-name>/dsb_patt/set_type
+Date: March 2023
+KernelVersion: 6.7
+Contact: Jinlong Mao (QUIC) <quic_jinlmao@quicinc.com>, Tao Zhang (QUIC) <quic_taozha@quicinc.com>
+Description:
+ (Write) Set the pattern type of DSB tpdm. Read
+ the pattern type of DSB tpdm.
+
+ Accepts only one of the 2 values - 0 or 1.
+ 0 : Set the DSB pattern type to value.
+ 1 : Set the DSB pattern type to toggle.
+
+What: /sys/bus/coresight/devices/<tpdm-name>/dsb_msr/msr[0:31]
+Date: March 2023
+KernelVersion: 6.7
+Contact: Jinlong Mao (QUIC) <quic_jinlmao@quicinc.com>, Tao Zhang (QUIC) <quic_taozha@quicinc.com>
+Description:
+ (RW) Set/Get the MSR(mux select register) for the DSB subunit
+ TPDM.
+
+What: /sys/bus/coresight/devices/<tpdm-name>/cmb_mode
+Date: January 2024
+KernelVersion: 6.9
+Contact: Jinlong Mao (QUIC) <quic_jinlmao@quicinc.com>, Tao Zhang (QUIC) <quic_taozha@quicinc.com>
+Description: (Write) Set the data collection mode of CMB tpdm. Continuous
+ change creates CMB data set elements on every CMBCLK edge.
+ Trace-on-change creates CMB data set elements only when a new
+ data set element differs in value from the previous element
+ in a CMB data set.
+
+ Accepts only one of the 2 values - 0 or 1.
+ 0 : Continuous CMB collection mode.
+ 1 : Trace-on-change CMB collection mode.
+
+What: /sys/bus/coresight/devices/<tpdm-name>/cmb_trig_patt/xpr[0:1]
+Date: January 2024
+KernelVersion: 6.9
+Contact: Jinlong Mao (QUIC) <quic_jinlmao@quicinc.com>, Tao Zhang (QUIC) <quic_taozha@quicinc.com>
+Description:
+ (RW) Set/Get the value of the trigger pattern for the CMB
+ subunit TPDM.
+
+What: /sys/bus/coresight/devices/<tpdm-name>/cmb_trig_patt/xpmr[0:1]
+Date: January 2024
+KernelVersion: 6.9
+Contact: Jinlong Mao (QUIC) <quic_jinlmao@quicinc.com>, Tao Zhang (QUIC) <quic_taozha@quicinc.com>
+Description:
+ (RW) Set/Get the mask of the trigger pattern for the CMB
+ subunit TPDM.
+
+What: /sys/bus/coresight/devices/<tpdm-name>/dsb_patt/tpr[0:1]
+Date: January 2024
+KernelVersion: 6.9
+Contact: Jinlong Mao (QUIC) <quic_jinlmao@quicinc.com>, Tao Zhang (QUIC) <quic_taozha@quicinc.com>
+Description:
+ (RW) Set/Get the value of the pattern for the CMB subunit TPDM.
+
+What: /sys/bus/coresight/devices/<tpdm-name>/dsb_patt/tpmr[0:1]
+Date: January 2024
+KernelVersion: 6.9
+Contact: Jinlong Mao (QUIC) <quic_jinlmao@quicinc.com>, Tao Zhang (QUIC) <quic_taozha@quicinc.com>
+Description:
+ (RW) Set/Get the mask of the pattern for the CMB subunit TPDM.
+
+What: /sys/bus/coresight/devices/<tpdm-name>/cmb_patt/enable_ts
+Date: January 2024
+KernelVersion: 6.9
+Contact: Jinlong Mao (QUIC) <quic_jinlmao@quicinc.com>, Tao Zhang (QUIC) <quic_taozha@quicinc.com>
+Description:
+ (Write) Set the pattern timestamp of CMB tpdm. Read
+ the pattern timestamp of CMB tpdm.
+
+ Accepts only one of the 2 values - 0 or 1.
+ 0 : Disable CMB pattern timestamp.
+ 1 : Enable CMB pattern timestamp.
+
+What: /sys/bus/coresight/devices/<tpdm-name>/cmb_trig_ts
+Date: January 2024
+KernelVersion: 6.9
+Contact: Jinlong Mao (QUIC) <quic_jinlmao@quicinc.com>, Tao Zhang (QUIC) <quic_taozha@quicinc.com>
+Description:
+ (RW) Set/Get the trigger timestamp of the CMB for tpdm.
+
+ Accepts only one of the 2 values - 0 or 1.
+ 0 : Set the CMB trigger type to false
+ 1 : Set the CMB trigger type to true
+
+What: /sys/bus/coresight/devices/<tpdm-name>/cmb_ts_all
+Date: January 2024
+KernelVersion: 6.9
+Contact: Jinlong Mao (QUIC) <quic_jinlmao@quicinc.com>, Tao Zhang (QUIC) <quic_taozha@quicinc.com>
+Description:
+ (RW) Read or write the status of timestamp upon all interface.
+ Only value 0 and 1 can be written to this node. Set this node to 1 to request
+ timestamp to all trace packet.
+ Accepts only one of the 2 values - 0 or 1.
+ 0 : Disable the timestamp of all trace packets.
+ 1 : Enable the timestamp of all trace packets.
+
+What: /sys/bus/coresight/devices/<tpdm-name>/cmb_msr/msr[0:31]
+Date: January 2024
+KernelVersion: 6.9
+Contact: Jinlong Mao (QUIC) <quic_jinlmao@quicinc.com>, Tao Zhang (QUIC) <quic_taozha@quicinc.com>
+Description:
+ (RW) Set/Get the MSR(mux select register) for the CMB subunit
+ TPDM.
+
+What: /sys/bus/coresight/devices/<tpdm-name>/mcmb_trig_lane
+Date: Feb 2025
+KernelVersion 6.15
+Contact: Jinlong Mao (QUIC) <quic_jinlmao@quicinc.com>, Tao Zhang (QUIC) <quic_taozha@quicinc.com>
+Description:
+ (RW) Set/Get which lane participates in the output pattern
+ match cross trigger mechanism for the MCMB subunit TPDM.
+
+What: /sys/bus/coresight/devices/<tpdm-name>/mcmb_lanes_select
+Date: Feb 2025
+KernelVersion 6.15
+Contact: Jinlong Mao (QUIC) <quic_jinlmao@quicinc.com>, Tao Zhang (QUIC) <quic_taozha@quicinc.com>
+Description:
+ (RW) Set/Get the enablement of the individual lane.
+
+What: /sys/bus/coresight/devices/<tpdm-name>/label
+Date: Aug 2025
+KernelVersion 6.18
+Contact: Mao Jinlong <quic_jinlmao@quicinc.com>
+Description: (Read) Show hardware context information of device.
diff --git a/Documentation/ABI/testing/sysfs-bus-coresight-devices-trbe b/Documentation/ABI/testing/sysfs-bus-coresight-devices-trbe
index ad3bbc6fa751..8a4b749ed26e 100644
--- a/Documentation/ABI/testing/sysfs-bus-coresight-devices-trbe
+++ b/Documentation/ABI/testing/sysfs-bus-coresight-devices-trbe
@@ -12,3 +12,9 @@ Contact: Anshuman Khandual <anshuman.khandual@arm.com>
Description: (Read) Shows if TRBE updates in the memory are with access
and dirty flag updates as well. This value is fetched from
the TRBIDR register.
+
+What: /sys/bus/coresight/devices/trbe<cpu>/label
+Date: Aug 2025
+KernelVersion 6.18
+Contact: Mao Jinlong <quic_jinlmao@quicinc.com>
+Description: (Read) Show hardware context information of device.
diff --git a/Documentation/ABI/testing/sysfs-bus-coresight-devices-ultra_smb b/Documentation/ABI/testing/sysfs-bus-coresight-devices-ultra_smb
new file mode 100644
index 000000000000..f560918ae738
--- /dev/null
+++ b/Documentation/ABI/testing/sysfs-bus-coresight-devices-ultra_smb
@@ -0,0 +1,31 @@
+What: /sys/bus/coresight/devices/ultra_smb<N>/enable_sink
+Date: January 2023
+KernelVersion: 6.3
+Contact: Junhao He <hejunhao3@huawei.com>
+Description: (RW) Add/remove a SMB device from a trace path. There can be
+ multiple sources for a single SMB device.
+
+What: /sys/bus/coresight/devices/ultra_smb<N>/mgmt/buf_size
+Date: January 2023
+KernelVersion: 6.3
+Contact: Junhao He <hejunhao3@huawei.com>
+Description: (RO) Shows the buffer size of each UltraSoc SMB device.
+
+What: /sys/bus/coresight/devices/ultra_smb<N>/mgmt/buf_status
+Date: January 2023
+KernelVersion: 6.3
+Contact: Junhao He <hejunhao3@huawei.com>
+Description: (RO) Shows the value of UltraSoc SMB status register.
+ BIT(0) is zero means buffer is empty.
+
+What: /sys/bus/coresight/devices/ultra_smb<N>/mgmt/read_pos
+Date: January 2023
+KernelVersion: 6.3
+Contact: Junhao He <hejunhao3@huawei.com>
+Description: (RO) Shows the value of UltraSoc SMB Read Pointer register.
+
+What: /sys/bus/coresight/devices/ultra_smb<N>/mgmt/write_pos
+Date: January 2023
+KernelVersion: 6.3
+Contact: Junhao He <hejunhao3@huawei.com>
+Description: (RO) Shows the value of UltraSoc SMB Write Pointer register.
diff --git a/Documentation/ABI/testing/sysfs-bus-counter b/Documentation/ABI/testing/sysfs-bus-counter
index 06c2b3e27e0b..3e7eddd8aff3 100644
--- a/Documentation/ABI/testing/sysfs-bus-counter
+++ b/Documentation/ABI/testing/sysfs-bus-counter
@@ -1,9 +1,53 @@
+What: /sys/bus/counter/devices/counterX/cascade_counts_enable
+KernelVersion: 6.4
+Contact: linux-iio@vger.kernel.org
+Description:
+ Indicates the cascading of Counts on Counter X.
+
+ Valid attribute values are boolean.
+
+What: /sys/bus/counter/devices/counterX/external_input_phase_clock_select
+KernelVersion: 6.4
+Contact: linux-iio@vger.kernel.org
+Description:
+ Selects the external clock pin for phase counting mode of
+ Counter X.
+
+ MTCLKA-MTCLKB:
+ MTCLKA and MTCLKB pins are selected for the external
+ phase clock.
+
+ MTCLKC-MTCLKD:
+ MTCLKC and MTCLKD pins are selected for the external
+ phase clock.
+
+What: /sys/bus/counter/devices/counterX/external_input_phase_clock_select_available
+KernelVersion: 6.4
+Contact: linux-iio@vger.kernel.org
+Description:
+ Discrete set of available values for the respective device
+ configuration are listed in this file.
+
What: /sys/bus/counter/devices/counterX/countY/count
KernelVersion: 5.2
Contact: linux-iio@vger.kernel.org
Description:
Count data of Count Y represented as a string.
+What: /sys/bus/counter/devices/counterX/countY/compare
+KernelVersion: 6.15
+Contact: linux-iio@vger.kernel.org
+Description:
+ If the counter device supports compare registers -- registers
+ used to compare counter channels against a particular count --
+ the compare count for channel Y is provided by this attribute.
+
+What: /sys/bus/counter/devices/counterX/countY/capture
+KernelVersion: 6.1
+Contact: linux-iio@vger.kernel.org
+Description:
+ Historical capture of the Count Y count data.
+
What: /sys/bus/counter/devices/counterX/countY/ceiling
KernelVersion: 5.2
Contact: linux-iio@vger.kernel.org
@@ -54,6 +98,60 @@ Description:
counter does not freeze at the boundary points, but
counts continuously throughout.
+ interrupt on terminal count:
+ The output signal is initially low, and will remain low
+ until the counter reaches zero. The output signal then
+ goes high and remains high until a new preset value is
+ set.
+
+ hardware retriggerable one-shot:
+ The output signal is initially high. The output signal
+ will go low by a trigger input signal, and will remain
+ low until the counter reaches zero. The output will then
+ go high and remain high until the next trigger. A
+ trigger results in loading the counter to the preset
+ value and setting the output signal low, thus starting
+ the one-shot pulse.
+
+ rate generator:
+ The output signal is initially high. When the counter
+ has decremented to 1, the output signal goes low for one
+ clock pulse. The output signal then goes high again, the
+ counter is reloaded to the preset value, and the process
+ repeats in a periodic manner as such.
+
+ square wave mode:
+ The output signal is initially high.
+
+ If the initial count is even, the counter is decremented
+ by two on succeeding clock pulses. When the count
+ expires, the output signal changes value and the
+ counter is reloaded to the preset value. The process
+ repeats in periodic manner as such.
+
+ If the initial count is odd, the initial count minus one
+ (an even number) is loaded and then is decremented by
+ two on succeeding clock pulses. One clock pulse after
+ the count expires, the output signal goes low and the
+ counter is reloaded to the preset value minus one.
+ Succeeding clock pulses decrement the count by two. When
+ the count expires, the output goes high again and the
+ counter is reloaded to the preset value minus one. The
+ process repeats in a periodic manner as such.
+
+ software triggered strobe:
+ The output signal is initially high. When the count
+ expires, the output will go low for one clock pulse and
+ then go high again. The counting sequence is "triggered"
+ by setting the preset value.
+
+ hardware triggered strobe:
+ The output signal is initially high. Counting is started
+ by a trigger input signal. When the count expires, the
+ output signal will go low for one clock pulse and then
+ go high again. A trigger results in loading the counter
+ to the preset value.
+
What: /sys/bus/counter/devices/counterX/countY/count_mode_available
What: /sys/bus/counter/devices/counterX/countY/error_noise_available
What: /sys/bus/counter/devices/counterX/countY/function_available
@@ -203,12 +301,23 @@ Description:
both edges:
Any state transition.
+What: /sys/bus/counter/devices/counterX/countY/num_overflows
+KernelVersion: 6.1
+Contact: linux-iio@vger.kernel.org
+Description:
+ This attribute indicates the number of overflows of count Y.
+
+What: /sys/bus/counter/devices/counterX/cascade_counts_enable_component_id
+What: /sys/bus/counter/devices/counterX/external_input_phase_clock_select_component_id
+What: /sys/bus/counter/devices/counterX/countY/capture_component_id
What: /sys/bus/counter/devices/counterX/countY/ceiling_component_id
-What: /sys/bus/counter/devices/counterX/countY/floor_component_id
+What: /sys/bus/counter/devices/counterX/countY/compare_component_id
What: /sys/bus/counter/devices/counterX/countY/count_mode_component_id
What: /sys/bus/counter/devices/counterX/countY/direction_component_id
What: /sys/bus/counter/devices/counterX/countY/enable_component_id
What: /sys/bus/counter/devices/counterX/countY/error_noise_component_id
+What: /sys/bus/counter/devices/counterX/countY/floor_component_id
+What: /sys/bus/counter/devices/counterX/countY/num_overflows_component_id
What: /sys/bus/counter/devices/counterX/countY/prescaler_component_id
What: /sys/bus/counter/devices/counterX/countY/preset_component_id
What: /sys/bus/counter/devices/counterX/countY/preset_enable_component_id
@@ -216,7 +325,9 @@ What: /sys/bus/counter/devices/counterX/countY/signalZ_action_component_id
What: /sys/bus/counter/devices/counterX/signalY/cable_fault_component_id
What: /sys/bus/counter/devices/counterX/signalY/cable_fault_enable_component_id
What: /sys/bus/counter/devices/counterX/signalY/filter_clock_prescaler_component_id
+What: /sys/bus/counter/devices/counterX/signalY/frequency_component_id
What: /sys/bus/counter/devices/counterX/signalY/index_polarity_component_id
+What: /sys/bus/counter/devices/counterX/signalY/polarity_component_id
What: /sys/bus/counter/devices/counterX/signalY/synchronous_mode_component_id
KernelVersion: 5.16
Contact: linux-iio@vger.kernel.org
@@ -303,6 +414,19 @@ Description:
Discrete set of available values for the respective Signal Y
configuration are listed in this file.
+What: /sys/bus/counter/devices/counterX/signalY/polarity
+KernelVersion: 6.1
+Contact: linux-iio@vger.kernel.org
+Description:
+ Active level of Signal Y. The following polarity values are
+ available:
+
+ positive:
+ Signal high state considered active level (rising edge).
+
+ negative:
+ Signal low state considered active level (falling edge).
+
What: /sys/bus/counter/devices/counterX/signalY/name
KernelVersion: 5.2
Contact: linux-iio@vger.kernel.org
@@ -345,3 +469,9 @@ Description:
via index_polarity. The index function (as enabled via
preset_enable) is performed synchronously with the
quadrature clock on the active level of the index input.
+
+What: /sys/bus/counter/devices/counterX/signalY/frequency
+KernelVersion: 6.1
+Contact: linux-iio@vger.kernel.org
+Description:
+ Read-only attribute that indicates the signal Y frequency, in Hz.
diff --git a/Documentation/ABI/testing/sysfs-bus-css b/Documentation/ABI/testing/sysfs-bus-css
index 12a733fe357f..d4d5cfb63b90 100644
--- a/Documentation/ABI/testing/sysfs-bus-css
+++ b/Documentation/ABI/testing/sysfs-bus-css
@@ -1,22 +1,19 @@
What: /sys/bus/css/devices/.../type
Date: March 2008
-Contact: Cornelia Huck <cornelia.huck@de.ibm.com>
- linux-s390@vger.kernel.org
+Contact: linux-s390@vger.kernel.org
Description: Contains the subchannel type, as reported by the hardware.
This attribute is present for all subchannel types.
What: /sys/bus/css/devices/.../modalias
Date: March 2008
-Contact: Cornelia Huck <cornelia.huck@de.ibm.com>
- linux-s390@vger.kernel.org
+Contact: linux-s390@vger.kernel.org
Description: Contains the module alias as reported with uevents.
It is of the format css:t<type> and present for all
subchannel types.
What: /sys/bus/css/drivers/io_subchannel/.../chpids
Date: December 2002
-Contact: Cornelia Huck <cornelia.huck@de.ibm.com>
- linux-s390@vger.kernel.org
+Contact: linux-s390@vger.kernel.org
Description: Contains the ids of the channel paths used by this
subchannel, as reported by the channel subsystem
during subchannel recognition.
@@ -26,8 +23,7 @@ Users: s390-tools, HAL
What: /sys/bus/css/drivers/io_subchannel/.../pimpampom
Date: December 2002
-Contact: Cornelia Huck <cornelia.huck@de.ibm.com>
- linux-s390@vger.kernel.org
+Contact: linux-s390@vger.kernel.org
Description: Contains the PIM/PAM/POM values, as reported by the
channel subsystem when last queried by the common I/O
layer (this implies that this attribute is not necessarily
@@ -38,8 +34,7 @@ Users: s390-tools, HAL
What: /sys/bus/css/devices/.../driver_override
Date: June 2019
-Contact: Cornelia Huck <cohuck@redhat.com>
- linux-s390@vger.kernel.org
+Contact: linux-s390@vger.kernel.org
Description: This file allows the driver for a device to be specified. When
specified, only a driver with a name matching the value written
to driver_override will have an opportunity to bind to the
diff --git a/Documentation/ABI/testing/sysfs-bus-cxl b/Documentation/ABI/testing/sysfs-bus-cxl
index 0b6a2e6e8fbb..c80a1b5a03db 100644
--- a/Documentation/ABI/testing/sysfs-bus-cxl
+++ b/Documentation/ABI/testing/sysfs-bus-cxl
@@ -1,3 +1,13 @@
+What: /sys/bus/cxl/flush
+Date: January, 2022
+KernelVersion: v5.18
+Contact: linux-cxl@vger.kernel.org
+Description:
+ (WO) If userspace manually unbinds a port the kernel schedules
+ all descendant memdevs for unbind. Writing '1' to this attribute
+ flushes that work.
+
+
What: /sys/bus/cxl/devices/memX/firmware_version
Date: December, 2020
KernelVersion: v5.12
@@ -7,6 +17,25 @@ Description:
Memory Device Output Payload in the CXL-2.0
specification.
+
+What: /sys/bus/cxl/devices/memX/payload_max
+Date: December, 2020
+KernelVersion: v5.12
+Contact: linux-cxl@vger.kernel.org
+Description:
+ (RO) Maximum size (in bytes) of the mailbox command payload
+ registers. Linux caps this at 1MB if the device reports a
+ larger size.
+
+
+What: /sys/bus/cxl/devices/memX/label_storage_size
+Date: May, 2021
+KernelVersion: v5.13
+Contact: linux-cxl@vger.kernel.org
+Description:
+ (RO) Size (in bytes) of the Label Storage Area (LSA).
+
+
What: /sys/bus/cxl/devices/memX/ram/size
Date: December, 2020
KernelVersion: v5.12
@@ -16,6 +45,24 @@ Description:
identically named field in the Identify Memory Device Output
Payload in the CXL-2.0 specification.
+
+What: /sys/bus/cxl/devices/memX/ram/qos_class
+Date: May, 2023
+KernelVersion: v6.8
+Contact: linux-cxl@vger.kernel.org
+Description:
+ (RO) For CXL host platforms that support "QoS Telemetry"
+ this attribute conveys a comma delimited list of platform
+ specific cookies that identifies a QoS performance class
+ for the volatile partition of the CXL mem device. These
+ class-ids can be compared against a similar "qos_class"
+ published for a root decoder. While it is not required
+ that the endpoints map their local memory-class to a
+ matching platform class, mismatches are not recommended
+ and there are platform specific performance related
+ side-effects that may result. First class-id is displayed.
+
+
What: /sys/bus/cxl/devices/memX/pmem/size
Date: December, 2020
KernelVersion: v5.12
@@ -25,105 +72,555 @@ Description:
identically named field in the Identify Memory Device Output
Payload in the CXL-2.0 specification.
+
+What: /sys/bus/cxl/devices/memX/pmem/qos_class
+Date: May, 2023
+KernelVersion: v6.8
+Contact: linux-cxl@vger.kernel.org
+Description:
+ (RO) For CXL host platforms that support "QoS Telemetry"
+ this attribute conveys a comma delimited list of platform
+ specific cookies that identifies a QoS performance class
+ for the persistent partition of the CXL mem device. These
+ class-ids can be compared against a similar "qos_class"
+ published for a root decoder. While it is not required
+ that the endpoints map their local memory-class to a
+ matching platform class, mismatches are not recommended
+ and there are platform specific performance related
+ side-effects that may result. First class-id is displayed.
+
+
+What: /sys/bus/cxl/devices/memX/serial
+Date: January, 2022
+KernelVersion: v5.18
+Contact: linux-cxl@vger.kernel.org
+Description:
+ (RO) 64-bit serial number per the PCIe Device Serial Number
+ capability. Mandatory for CXL devices, see CXL 2.0 8.1.12.2
+ Memory Device PCIe Capabilities and Extended Capabilities.
+
+
+What: /sys/bus/cxl/devices/memX/numa_node
+Date: January, 2022
+KernelVersion: v5.18
+Contact: linux-cxl@vger.kernel.org
+Description:
+ (RO) If NUMA is enabled and the platform has affinitized the
+ host PCI device for this memory device, emit the CPU node
+ affinity for this device.
+
+
+What: /sys/bus/cxl/devices/memX/security/state
+Date: June, 2023
+KernelVersion: v6.5
+Contact: linux-cxl@vger.kernel.org
+Description:
+ (RO) Reading this file will display the CXL security state for
+ that device. Such states can be: 'disabled', 'sanitize', when
+ a sanitization is currently underway; or those available only
+ for persistent memory: 'locked', 'unlocked' or 'frozen'. This
+ sysfs entry is select/poll capable from userspace to notify
+ upon completion of a sanitize operation.
+
+
+What: /sys/bus/cxl/devices/memX/security/sanitize
+Date: June, 2023
+KernelVersion: v6.5
+Contact: linux-cxl@vger.kernel.org
+Description:
+ (WO) Write a boolean 'true' string value to this attribute to
+ sanitize the device to securely re-purpose or decommission it.
+ This is done by ensuring that all user data and meta-data,
+ whether it resides in persistent capacity, volatile capacity,
+ or the LSA, is made permanently unavailable by whatever means
+ is appropriate for the media type. This functionality requires
+ the device to be disabled, that is, not actively decoding any
+ HPA ranges. This permits avoiding explicit global CPU cache
+ management, relying instead for it to be done when a region
+ transitions between software programmed and hardware committed
+ states. If this file is not present, then there is no hardware
+ support for the operation.
+
+
+What /sys/bus/cxl/devices/memX/security/erase
+Date: June, 2023
+KernelVersion: v6.5
+Contact: linux-cxl@vger.kernel.org
+Description:
+ (WO) Write a boolean 'true' string value to this attribute to
+ secure erase user data by changing the media encryption keys for
+ all user data areas of the device. This functionality requires
+ the device to be disabled, that is, not actively decoding any
+ HPA ranges. This permits avoiding explicit global CPU cache
+ management, relying instead for it to be done when a region
+ transitions between software programmed and hardware committed
+ states. If this file is not present, then there is no hardware
+ support for the operation.
+
+
+What: /sys/bus/cxl/devices/memX/firmware/
+Date: April, 2023
+KernelVersion: v6.5
+Contact: linux-cxl@vger.kernel.org
+Description:
+ (RW) Firmware uploader mechanism. The different files under
+ this directory can be used to upload and activate new
+ firmware for CXL devices. The interfaces under this are
+ documented in sysfs-class-firmware.
+
+
What: /sys/bus/cxl/devices/*/devtype
Date: June, 2021
KernelVersion: v5.14
Contact: linux-cxl@vger.kernel.org
Description:
- CXL device objects export the devtype attribute which mirrors
- the same value communicated in the DEVTYPE environment variable
- for uevents for devices on the "cxl" bus.
+ (RO) CXL device objects export the devtype attribute which
+ mirrors the same value communicated in the DEVTYPE environment
+ variable for uevents for devices on the "cxl" bus.
+
+
+What: /sys/bus/cxl/devices/*/modalias
+Date: December, 2021
+KernelVersion: v5.18
+Contact: linux-cxl@vger.kernel.org
+Description:
+ (RO) CXL device objects export the modalias attribute which
+ mirrors the same value communicated in the MODALIAS environment
+ variable for uevents for devices on the "cxl" bus.
+
What: /sys/bus/cxl/devices/portX/uport
Date: June, 2021
KernelVersion: v5.14
Contact: linux-cxl@vger.kernel.org
Description:
- CXL port objects are enumerated from either a platform firmware
- device (ACPI0017 and ACPI0016) or PCIe switch upstream port with
- CXL component registers. The 'uport' symlink connects the CXL
- portX object to the device that published the CXL port
+ (RO) CXL port objects are enumerated from either a platform
+ firmware device (ACPI0017 and ACPI0016) or PCIe switch upstream
+ port with CXL component registers. The 'uport' symlink connects
+ the CXL portX object to the device that published the CXL port
capability.
+
+What: /sys/bus/cxl/devices/{port,endpoint}X/parent_dport
+Date: January, 2023
+KernelVersion: v6.3
+Contact: linux-cxl@vger.kernel.org
+Description:
+ (RO) CXL port objects are instantiated for each upstream port in
+ a CXL/PCIe switch, and for each endpoint to map the
+ corresponding memory device into the CXL port hierarchy. When a
+ descendant CXL port (switch or endpoint) is enumerated it is
+ useful to know which 'dport' object in the parent CXL port
+ routes to this descendant. The 'parent_dport' symlink points to
+ the device representing the downstream port of a CXL switch that
+ routes to {port,endpoint}X.
+
+
What: /sys/bus/cxl/devices/portX/dportY
Date: June, 2021
KernelVersion: v5.14
Contact: linux-cxl@vger.kernel.org
Description:
- CXL port objects are enumerated from either a platform firmware
- device (ACPI0017 and ACPI0016) or PCIe switch upstream port with
- CXL component registers. The 'dportY' symlink identifies one or
- more downstream ports that the upstream port may target in its
- decode of CXL memory resources. The 'Y' integer reflects the
- hardware port unique-id used in the hardware decoder target
- list.
+ (RO) CXL port objects are enumerated from either a platform
+ firmware device (ACPI0017 and ACPI0016) or PCIe switch upstream
+ port with CXL component registers. The 'dportY' symlink
+ identifies one or more downstream ports that the upstream port
+ may target in its decode of CXL memory resources. The 'Y'
+ integer reflects the hardware port unique-id used in the
+ hardware decoder target list.
+
+
+What: /sys/bus/cxl/devices/portX/decoders_committed
+Date: October, 2023
+KernelVersion: v6.7
+Contact: linux-cxl@vger.kernel.org
+Description:
+ (RO) A memory device is considered active when any of its
+ decoders are in the "committed" state (See CXL 3.0 8.2.4.19.7
+ CXL HDM Decoder n Control Register). Hotplug and destructive
+ operations like "sanitize" are blocked while device is actively
+ decoding a Host Physical Address range. Note that this number
+ may be elevated without any regionX objects active or even
+ enumerated, as this may be due to decoders established by
+ platform firmware or a previous kernel (kexec).
+
What: /sys/bus/cxl/devices/decoderX.Y
Date: June, 2021
KernelVersion: v5.14
Contact: linux-cxl@vger.kernel.org
Description:
- CXL decoder objects are enumerated from either a platform
+ (RO) CXL decoder objects are enumerated from either a platform
firmware description, or a CXL HDM decoder register set in a
PCIe device (see CXL 2.0 section 8.2.5.12 CXL HDM Decoder
Capability Structure). The 'X' in decoderX.Y represents the
cxl_port container of this decoder, and 'Y' represents the
instance id of a given decoder resource.
+
What: /sys/bus/cxl/devices/decoderX.Y/{start,size}
Date: June, 2021
KernelVersion: v5.14
Contact: linux-cxl@vger.kernel.org
Description:
- The 'start' and 'size' attributes together convey the physical
- address base and number of bytes mapped in the decoder's decode
- window. For decoders of devtype "cxl_decoder_root" the address
- range is fixed. For decoders of devtype "cxl_decoder_switch" the
- address is bounded by the decode range of the cxl_port ancestor
- of the decoder's cxl_port, and dynamically updates based on the
- active memory regions in that address space.
+ (RO) The 'start' and 'size' attributes together convey the
+ physical address base and number of bytes mapped in the
+ decoder's decode window. For decoders of devtype
+ "cxl_decoder_root" the address range is fixed. For decoders of
+ devtype "cxl_decoder_switch" the address is bounded by the
+ decode range of the cxl_port ancestor of the decoder's cxl_port,
+ and dynamically updates based on the active memory regions in
+ that address space.
+
What: /sys/bus/cxl/devices/decoderX.Y/locked
Date: June, 2021
KernelVersion: v5.14
Contact: linux-cxl@vger.kernel.org
Description:
- CXL HDM decoders have the capability to lock the configuration
- until the next device reset. For decoders of devtype
- "cxl_decoder_root" there is no standard facility to unlock them.
- For decoders of devtype "cxl_decoder_switch" a secondary bus
- reset, of the PCIe bridge that provides the bus for this
- decoders uport, unlocks / resets the decoder.
+ (RO) CXL HDM decoders have the capability to lock the
+ configuration until the next device reset. For decoders of
+ devtype "cxl_decoder_root" there is no standard facility to
+ unlock them. For decoders of devtype "cxl_decoder_switch" a
+ secondary bus reset, of the PCIe bridge that provides the bus
+ for this decoders uport, unlocks / resets the decoder.
+
What: /sys/bus/cxl/devices/decoderX.Y/target_list
Date: June, 2021
KernelVersion: v5.14
Contact: linux-cxl@vger.kernel.org
Description:
- Display a comma separated list of the current decoder target
- configuration. The list is ordered by the current configured
- interleave order of the decoder's dport instances. Each entry in
- the list is a dport id.
+ (RO) Display a comma separated list of the current decoder
+ target configuration. The list is ordered by the current
+ configured interleave order of the decoder's dport instances.
+ Each entry in the list is a dport id.
+
What: /sys/bus/cxl/devices/decoderX.Y/cap_{pmem,ram,type2,type3}
Date: June, 2021
KernelVersion: v5.14
Contact: linux-cxl@vger.kernel.org
Description:
- When a CXL decoder is of devtype "cxl_decoder_root", it
+ (RO) When a CXL decoder is of devtype "cxl_decoder_root", it
represents a fixed memory window identified by platform
firmware. A fixed window may only support a subset of memory
types. The 'cap_*' attributes indicate whether persistent
memory, volatile memory, accelerator memory, and / or expander
memory may be mapped behind this decoder's memory window.
+
What: /sys/bus/cxl/devices/decoderX.Y/target_type
Date: June, 2021
KernelVersion: v5.14
Contact: linux-cxl@vger.kernel.org
Description:
- When a CXL decoder is of devtype "cxl_decoder_switch", it can
- optionally decode either accelerator memory (type-2) or expander
- memory (type-3). The 'target_type' attribute indicates the
- current setting which may dynamically change based on what
+ (RO) When a CXL decoder is of devtype "cxl_decoder_switch", it
+ can optionally decode either accelerator memory (type-2) or
+ expander memory (type-3). The 'target_type' attribute indicates
+ the current setting which may dynamically change based on what
memory regions are activated in this decode hierarchy.
+
+
+What: /sys/bus/cxl/devices/endpointX/CDAT
+Date: July, 2022
+KernelVersion: v6.0
+Contact: linux-cxl@vger.kernel.org
+Description:
+ (RO) If this sysfs entry is not present no DOE mailbox was
+ found to support CDAT data. If it is present and the length of
+ the data is 0 reading the CDAT data failed. Otherwise the CDAT
+ data is reported.
+
+
+What: /sys/bus/cxl/devices/decoderX.Y/mode
+Date: May, 2022
+KernelVersion: v6.0
+Contact: linux-cxl@vger.kernel.org
+Description:
+ (RW) When a CXL decoder is of devtype "cxl_decoder_endpoint" it
+ translates from a host physical address range, to a device
+ local address range. Device-local address ranges are further
+ split into a 'ram' (volatile memory) range and 'pmem'
+ (persistent memory) range. The 'mode' attribute emits one of
+ 'ram', 'pmem', or 'none'. The 'none' indicates the decoder is
+ not actively decoding, or no DPA allocation policy has been
+ set.
+
+ 'mode' can be written, when the decoder is in the 'disabled'
+ state, with either 'ram' or 'pmem' to set the boundaries for the
+ next allocation.
+
+
+What: /sys/bus/cxl/devices/decoderX.Y/dpa_resource
+Date: May, 2022
+KernelVersion: v6.0
+Contact: linux-cxl@vger.kernel.org
+Description:
+ (RO) When a CXL decoder is of devtype "cxl_decoder_endpoint",
+ and its 'dpa_size' attribute is non-zero, this attribute
+ indicates the device physical address (DPA) base address of the
+ allocation.
+
+
+What: /sys/bus/cxl/devices/decoderX.Y/dpa_size
+Date: May, 2022
+KernelVersion: v6.0
+Contact: linux-cxl@vger.kernel.org
+Description:
+ (RW) When a CXL decoder is of devtype "cxl_decoder_endpoint" it
+ translates from a host physical address range, to a device local
+ address range. The range, base address plus length in bytes, of
+ DPA allocated to this decoder is conveyed in these 2 attributes.
+ Allocations can be mutated as long as the decoder is in the
+ disabled state. A write to 'dpa_size' releases the previous DPA
+ allocation and then attempts to allocate from the free capacity
+ in the device partition referred to by 'decoderX.Y/mode'.
+ Allocate and free requests can only be performed on the highest
+ instance number disabled decoder with non-zero size. I.e.
+ allocations are enforced to occur in increasing 'decoderX.Y/id'
+ order and frees are enforced to occur in decreasing
+ 'decoderX.Y/id' order.
+
+
+What: /sys/bus/cxl/devices/decoderX.Y/interleave_ways
+Date: May, 2022
+KernelVersion: v6.0
+Contact: linux-cxl@vger.kernel.org
+Description:
+ (RO) The number of targets across which this decoder's host
+ physical address (HPA) memory range is interleaved. The device
+ maps every Nth block of HPA (of size ==
+ 'interleave_granularity') to consecutive DPA addresses. The
+ decoder's position in the interleave is determined by the
+ device's (endpoint or switch) switch ancestry. For root
+ decoders their interleave is specified by platform firmware and
+ they only specify a downstream target order for host bridges.
+
+
+What: /sys/bus/cxl/devices/decoderX.Y/interleave_granularity
+Date: May, 2022
+KernelVersion: v6.0
+Contact: linux-cxl@vger.kernel.org
+Description:
+ (RO) The number of consecutive bytes of host physical address
+ space this decoder claims at address N before the decode rotates
+ to the next target in the interleave at address N +
+ interleave_granularity (assuming N is aligned to
+ interleave_granularity).
+
+
+What: /sys/bus/cxl/devices/decoderX.Y/create_{pmem,ram}_region
+Date: May, 2022, January, 2023
+KernelVersion: v6.0 (pmem), v6.3 (ram)
+Contact: linux-cxl@vger.kernel.org
+Description:
+ (RW) Write a string in the form 'regionZ' to start the process
+ of defining a new persistent, or volatile memory region
+ (interleave-set) within the decode range bounded by root decoder
+ 'decoderX.Y'. The value written must match the current value
+ returned from reading this attribute. An atomic compare exchange
+ operation is done on write to assign the requested id to a
+ region and allocate the region-id for the next creation attempt.
+ EBUSY is returned if the region name written does not match the
+ current cached value.
+
+
+What: /sys/bus/cxl/devices/decoderX.Y/delete_region
+Date: May, 2022
+KernelVersion: v6.0
+Contact: linux-cxl@vger.kernel.org
+Description:
+ (WO) Write a string in the form 'regionZ' to delete that region,
+ provided it is currently idle / not bound to a driver.
+
+
+What: /sys/bus/cxl/devices/decoderX.Y/qos_class
+Date: May, 2023
+KernelVersion: v6.5
+Contact: linux-cxl@vger.kernel.org
+Description:
+ (RO) For CXL host platforms that support "QoS Telemetry" this
+ root-decoder-only attribute conveys a platform specific cookie
+ that identifies a QoS performance class for the CXL Window.
+ This class-id can be compared against a similar "qos_class"
+ published for each memory-type that an endpoint supports. While
+ it is not required that endpoints map their local memory-class
+ to a matching platform class, mismatches are not recommended and
+ there are platform specific side-effects that may result.
+
+
+What: /sys/bus/cxl/devices/regionZ/uuid
+Date: May, 2022
+KernelVersion: v6.0
+Contact: linux-cxl@vger.kernel.org
+Description:
+ (RW) Write a unique identifier for the region. This field must
+ be set for persistent regions and it must not conflict with the
+ UUID of another region. For volatile ram regions this
+ attribute is a read-only empty string.
+
+
+What: /sys/bus/cxl/devices/regionZ/interleave_granularity
+Date: May, 2022
+KernelVersion: v6.0
+Contact: linux-cxl@vger.kernel.org
+Description:
+ (RW) Set the number of consecutive bytes each device in the
+ interleave set will claim. The possible interleave granularity
+ values are determined by the CXL spec and the participating
+ devices.
+
+
+What: /sys/bus/cxl/devices/regionZ/interleave_ways
+Date: May, 2022
+KernelVersion: v6.0
+Contact: linux-cxl@vger.kernel.org
+Description:
+ (RW) Configures the number of devices participating in the
+ region is set by writing this value. Each device will provide
+ 1/interleave_ways of storage for the region.
+
+
+What: /sys/bus/cxl/devices/regionZ/size
+Date: May, 2022
+KernelVersion: v6.0
+Contact: linux-cxl@vger.kernel.org
+Description:
+ (RW) System physical address space to be consumed by the region.
+ When written trigger the driver to allocate space out of the
+ parent root decoder's address space. When read the size of the
+ address space is reported and should match the span of the
+ region's resource attribute. Size shall be set after the
+ interleave configuration parameters. Once set it cannot be
+ changed, only freed by writing 0. The kernel makes no guarantees
+ that data is maintained over an address space freeing event, and
+ there is no guarantee that a free followed by an allocate
+ results in the same address being allocated. If extended linear
+ cache is present, the size indicates extended linear cache size
+ plus the CXL region size.
+
+What: /sys/bus/cxl/devices/regionZ/extended_linear_cache_size
+Date: October, 2025
+KernelVersion: v6.19
+Contact: linux-cxl@vger.kernel.org
+Description:
+ (RO) The size of extended linear cache, if there is an extended
+ linear cache. Otherwise the attribute will not be visible.
+
+What: /sys/bus/cxl/devices/regionZ/mode
+Date: January, 2023
+KernelVersion: v6.3
+Contact: linux-cxl@vger.kernel.org
+Description:
+ (RO) The mode of a region is established at region creation time
+ and dictates the mode of the endpoint decoder that comprise the
+ region. For more details on the possible modes see
+ /sys/bus/cxl/devices/decoderX.Y/mode
+
+
+What: /sys/bus/cxl/devices/regionZ/resource
+Date: May, 2022
+KernelVersion: v6.0
+Contact: linux-cxl@vger.kernel.org
+Description:
+ (RO) A region is a contiguous partition of a CXL root decoder
+ address space. Region capacity is allocated by writing to the
+ size attribute, the resulting physical address space determined
+ by the driver is reflected here. It is therefore not useful to
+ read this before writing a value to the size attribute.
+
+
+What: /sys/bus/cxl/devices/regionZ/target[0..N]
+Date: May, 2022
+KernelVersion: v6.0
+Contact: linux-cxl@vger.kernel.org
+Description:
+ (RW) Write an endpoint decoder object name to 'targetX' where X
+ is the intended position of the endpoint device in the region
+ interleave and N is the 'interleave_ways' setting for the
+ region. ENXIO is returned if the write results in an impossible
+ to map decode scenario, like the endpoint is unreachable at that
+ position relative to the root decoder interleave. EBUSY is
+ returned if the position in the region is already occupied, or
+ if the region is not in a state to accept interleave
+ configuration changes. EINVAL is returned if the object name is
+ not an endpoint decoder. Once all positions have been
+ successfully written a final validation for decode conflicts is
+ performed before activating the region.
+
+
+What: /sys/bus/cxl/devices/regionZ/commit
+Date: May, 2022
+KernelVersion: v6.0
+Contact: linux-cxl@vger.kernel.org
+Description:
+ (RW) Write a boolean 'true' string value to this attribute to
+ trigger the region to transition from the software programmed
+ state to the actively decoding in hardware state. The commit
+ operation in addition to validating that the region is in proper
+ configured state, validates that the decoders are being
+ committed in spec mandated order (last committed decoder id +
+ 1), and checks that the hardware accepts the commit request.
+ Reading this value indicates whether the region is committed or
+ not.
+
+
+What: /sys/bus/cxl/devices/memX/trigger_poison_list
+Date: April, 2023
+KernelVersion: v6.4
+Contact: linux-cxl@vger.kernel.org
+Description:
+ (WO) When a boolean 'true' is written to this attribute the
+ memdev driver retrieves the poison list from the device. The
+ list consists of addresses that are poisoned, or would result
+ in poison if accessed, and the source of the poison. This
+ attribute is only visible for devices supporting the
+ capability. The retrieved errors are logged as kernel
+ events when cxl_poison event tracing is enabled.
+
+
+What: /sys/bus/cxl/devices/regionZ/accessY/read_bandwidth
+ /sys/bus/cxl/devices/regionZ/accessY/write_bandwidth
+Date: Jan, 2024
+KernelVersion: v6.9
+Contact: linux-cxl@vger.kernel.org
+Description:
+ (RO) The aggregated read or write bandwidth of the region. The
+ number is the accumulated read or write bandwidth of all CXL memory
+ devices that contributes to the region in MB/s. It is
+ identical data that should appear in
+ /sys/devices/system/node/nodeX/accessY/initiators/read_bandwidth or
+ /sys/devices/system/node/nodeX/accessY/initiators/write_bandwidth.
+ See Documentation/ABI/stable/sysfs-devices-node. access0 provides
+ the number to the closest initiator and access1 provides the
+ number to the closest CPU.
+
+
+What: /sys/bus/cxl/devices/regionZ/accessY/read_latency
+ /sys/bus/cxl/devices/regionZ/accessY/write_latency
+Date: Jan, 2024
+KernelVersion: v6.9
+Contact: linux-cxl@vger.kernel.org
+Description:
+ (RO) The read or write latency of the region. The number is
+ the worst read or write latency of all CXL memory devices that
+ contributes to the region in nanoseconds. It is identical data
+ that should appear in
+ /sys/devices/system/node/nodeX/accessY/initiators/read_latency or
+ /sys/devices/system/node/nodeX/accessY/initiators/write_latency.
+ See Documentation/ABI/stable/sysfs-devices-node. access0 provides
+ the number to the closest initiator and access1 provides the
+ number to the closest CPU.
+
+
+What: /sys/bus/cxl/devices/nvdimm-bridge0/ndbusX/nmemY/cxl/dirty_shutdown
+Date: Feb, 2025
+KernelVersion: v6.15
+Contact: linux-cxl@vger.kernel.org
+Description:
+ (RO) The device dirty shutdown count value, which is the number
+ of times the device could have incurred in potential data loss.
+ The count is persistent across power loss and wraps back to 0
+ upon overflow. If this file is not present, the device does not
+ have the necessary support for dirty tracking.
diff --git a/Documentation/ABI/testing/sysfs-bus-dax b/Documentation/ABI/testing/sysfs-bus-dax
new file mode 100644
index 000000000000..b34266bfae49
--- /dev/null
+++ b/Documentation/ABI/testing/sysfs-bus-dax
@@ -0,0 +1,153 @@
+What: /sys/bus/dax/devices/daxX.Y/align
+Date: October, 2020
+KernelVersion: v5.10
+Contact: nvdimm@lists.linux.dev
+Description:
+ (RW) Provides a way to specify an alignment for a dax device.
+ Values allowed are constrained by the physical address ranges
+ that back the dax device, and also by arch requirements.
+
+What: /sys/bus/dax/devices/daxX.Y/mapping
+Date: October, 2020
+KernelVersion: v5.10
+Contact: nvdimm@lists.linux.dev
+Description:
+ (WO) Provides a way to allocate a mapping range under a dax
+ device. Specified in the format <start>-<end>.
+
+What: /sys/bus/dax/devices/daxX.Y/mapping[0..N]/start
+What: /sys/bus/dax/devices/daxX.Y/mapping[0..N]/end
+What: /sys/bus/dax/devices/daxX.Y/mapping[0..N]/page_offset
+Date: October, 2020
+KernelVersion: v5.10
+Contact: nvdimm@lists.linux.dev
+Description:
+ (RO) A dax device may have multiple constituent discontiguous
+ address ranges. These are represented by the different
+ 'mappingX' subdirectories. The 'start' attribute indicates the
+ start physical address for the given range. The 'end' attribute
+ indicates the end physical address for the given range. The
+ 'page_offset' attribute indicates the offset of the current
+ range in the dax device.
+
+What: /sys/bus/dax/devices/daxX.Y/resource
+Date: June, 2019
+KernelVersion: v5.3
+Contact: nvdimm@lists.linux.dev
+Description:
+ (RO) The resource attribute indicates the starting physical
+ address of a dax device. In case of a device with multiple
+ constituent ranges, it indicates the starting address of the
+ first range.
+
+What: /sys/bus/dax/devices/daxX.Y/size
+Date: October, 2020
+KernelVersion: v5.10
+Contact: nvdimm@lists.linux.dev
+Description:
+ (RW) The size attribute indicates the total size of a dax
+ device. For creating subdivided dax devices, or for resizing
+ an existing device, the new size can be written to this as
+ part of the reconfiguration process.
+
+What: /sys/bus/dax/devices/daxX.Y/numa_node
+Date: November, 2019
+KernelVersion: v5.5
+Contact: nvdimm@lists.linux.dev
+Description:
+ (RO) If NUMA is enabled and the platform has affinitized the
+ backing device for this dax device, emit the CPU node
+ affinity for this device.
+
+What: /sys/bus/dax/devices/daxX.Y/target_node
+Date: February, 2019
+KernelVersion: v5.1
+Contact: nvdimm@lists.linux.dev
+Description:
+ (RO) The target-node attribute is the Linux numa-node that a
+ device-dax instance may create when it is online. Prior to
+ being online the device's 'numa_node' property reflects the
+ closest online cpu node which is the typical expectation of a
+ device 'numa_node'. Once it is online it becomes its own
+ distinct numa node.
+
+What: $(readlink -f /sys/bus/dax/devices/daxX.Y)/../dax_region/available_size
+Date: October, 2020
+KernelVersion: v5.10
+Contact: nvdimm@lists.linux.dev
+Description:
+ (RO) The available_size attribute tracks available dax region
+ capacity. This only applies to volatile hmem devices, not pmem
+ devices, since pmem devices are defined by nvdimm namespace
+ boundaries.
+
+What: $(readlink -f /sys/bus/dax/devices/daxX.Y)/../dax_region/size
+Date: July, 2017
+KernelVersion: v5.1
+Contact: nvdimm@lists.linux.dev
+Description:
+ (RO) The size attribute indicates the size of a given dax region
+ in bytes.
+
+What: $(readlink -f /sys/bus/dax/devices/daxX.Y)/../dax_region/align
+Date: October, 2020
+KernelVersion: v5.10
+Contact: nvdimm@lists.linux.dev
+Description:
+ (RO) The align attribute indicates alignment of the dax region.
+ Changes on align may not always be valid, when say certain
+ mappings were created with 2M and then we switch to 1G. This
+ validates all ranges against the new value being attempted, post
+ resizing.
+
+What: $(readlink -f /sys/bus/dax/devices/daxX.Y)/../dax_region/seed
+Date: October, 2020
+KernelVersion: v5.10
+Contact: nvdimm@lists.linux.dev
+Description:
+ (RO) The seed device is a concept for dynamic dax regions to be
+ able to split the region amongst multiple sub-instances. The
+ seed device, similar to libnvdimm seed devices, is a device
+ that starts with zero capacity allocated and unbound to a
+ driver.
+
+What: $(readlink -f /sys/bus/dax/devices/daxX.Y)/../dax_region/create
+Date: October, 2020
+KernelVersion: v5.10
+Contact: nvdimm@lists.linux.dev
+Description:
+ (RW) The create interface to the dax region provides a way to
+ create a new unconfigured dax device under the given region, which
+ can then be configured (with a size etc.) and then probed.
+
+What: $(readlink -f /sys/bus/dax/devices/daxX.Y)/../dax_region/delete
+Date: October, 2020
+KernelVersion: v5.10
+Contact: nvdimm@lists.linux.dev
+Description:
+ (WO) The delete interface for a dax region provides for deletion
+ of any 0-sized and idle dax devices.
+
+What: $(readlink -f /sys/bus/dax/devices/daxX.Y)/../dax_region/id
+Date: July, 2017
+KernelVersion: v5.1
+Contact: nvdimm@lists.linux.dev
+Description:
+ (RO) The id attribute indicates the region id of a dax region.
+
+What: /sys/bus/dax/devices/daxX.Y/memmap_on_memory
+Date: January, 2024
+KernelVersion: v6.8
+Contact: nvdimm@lists.linux.dev
+Description:
+ (RW) Control the memmap_on_memory setting if the dax device
+ were to be hotplugged as system memory. This determines whether
+ the 'altmap' for the hotplugged memory will be placed on the
+ device being hotplugged (memmap_on_memory=1) or if it will be
+ placed on regular memory (memmap_on_memory=0). This attribute
+ must be set before the device is handed over to the 'kmem'
+ driver (i.e. hotplugged into system-ram). Additionally, this
+ depends on CONFIG_MHP_MEMMAP_ON_MEMORY, and a globally enabled
+ memmap_on_memory parameter for memory_hotplug. This is
+ typically set on the kernel command line -
+ memory_hotplug.memmap_on_memory set to 'true' or 'force'."
diff --git a/Documentation/ABI/testing/sysfs-bus-event_source-devices b/Documentation/ABI/testing/sysfs-bus-event_source-devices
new file mode 100644
index 000000000000..79b268319df1
--- /dev/null
+++ b/Documentation/ABI/testing/sysfs-bus-event_source-devices
@@ -0,0 +1,24 @@
+What: /sys/bus/event_source/devices/<pmu>
+Date: 2014/02/24
+Contact: Linux kernel mailing list <linux-kernel@vger.kernel.org>
+Description: Performance Monitoring Unit (<pmu>)
+
+ Each <pmu> directory, for a PMU device, is a name
+ optionally followed by an underscore and then either a
+ decimal or hexadecimal number. For example, cpu is a
+ PMU name without a suffix as is intel_bts,
+ uncore_imc_0 is a PMU name with a 0 numeric suffix,
+ ddr_pmu_87e1b0000000 is a PMU name with a hex
+ suffix. The hex suffix must be more than two
+ characters long to avoid ambiguity with PMUs like the
+ S390 cpum_cf.
+
+ Tools can treat PMUs with the same name that differ by
+ suffix as instances of the same PMU for the sake of,
+ for example, opening an event. For example, the PMUs
+ uncore_imc_free_running_0 and
+ uncore_imc_free_running_1 have an event data_read;
+ opening the data_read event on a PMU specified as
+ uncore_imc_free_running should be treated as opening
+ the data_read event on PMU uncore_imc_free_running_0
+ and PMU uncore_imc_free_running_1.
diff --git a/Documentation/ABI/testing/sysfs-bus-event_source-devices-caps b/Documentation/ABI/testing/sysfs-bus-event_source-devices-caps
new file mode 100644
index 000000000000..a5f506f7d481
--- /dev/null
+++ b/Documentation/ABI/testing/sysfs-bus-event_source-devices-caps
@@ -0,0 +1,24 @@
+What: /sys/bus/event_source/devices/<dev>/caps
+Date: May 2022
+KernelVersion: 5.19
+Contact: Linux kernel mailing list <linux-kernel@vger.kernel.org>
+Description:
+ Attribute group to describe the capabilities exposed
+ for a particular pmu. Each attribute of this group can
+ expose information specific to a PMU, say pmu_name, so that
+ userspace can understand some of the feature which the
+ platform specific PMU supports.
+
+ One of the example available capability in supported platform
+ like Intel is pmu_name, which exposes underlying CPU name known
+ to the PMU driver.
+
+ Example output in powerpc:
+ grep . /sys/bus/event_source/devices/cpu/caps/*
+ /sys/bus/event_source/devices/cpu/caps/pmu_name:POWER9
+
+ The "branch_counter_nr" in the supported platform exposes the
+ maximum number of counters which can be shown in the u64 counters
+ of PERF_SAMPLE_BRANCH_COUNTERS, while the "branch_counter_width"
+ exposes the width of each counter. Both of them can be used by
+ the perf tool to parse the logged counters in each branch.
diff --git a/Documentation/ABI/testing/sysfs-bus-event_source-devices-events b/Documentation/ABI/testing/sysfs-bus-event_source-devices-events
index 505f080d20a1..0fe1b9487202 100644
--- a/Documentation/ABI/testing/sysfs-bus-event_source-devices-events
+++ b/Documentation/ABI/testing/sysfs-bus-event_source-devices-events
@@ -37,6 +37,14 @@ Description: Per-pmu performance monitoring events specific to the running syste
performance monitoring event supported by the <pmu>. The name
of the file is the name of the event.
+ As performance monitoring event names are case insensitive
+ in the perf tool, the perf tool only looks for all lower
+ case or all upper case event names in sysfs to avoid
+ scanning the directory. It is therefore required the
+ name of the event here is either completely lower or upper
+ case, with no mixed-case characters. Numbers, '.', '_', and
+ '-' are also allowed.
+
File contents:
<term>[=<value>][,<term>[=<value>]]...
@@ -47,7 +55,7 @@ Description: Per-pmu performance monitoring events specific to the running syste
If a <term> is specified alone (without an assigned value), it
is implied that 0x1 is assigned to that <term>.
- Examples (each of these lines would be in a seperate file):
+ Examples (each of these lines would be in a separate file):
event=0x2abc
event=0x423,inv,cmask=0x3
@@ -83,7 +91,7 @@ Description: Perf event scaling factors
A string representing a floating point value expressed in
scientific notation to be multiplied by the event count
- recieved from the kernel to match the unit specified in the
+ received from the kernel to match the unit specified in the
<event>.unit file.
Example:
diff --git a/Documentation/ABI/testing/sysfs-bus-event_source-devices-hisi_ptt b/Documentation/ABI/testing/sysfs-bus-event_source-devices-hisi_ptt
new file mode 100644
index 000000000000..1119766564d7
--- /dev/null
+++ b/Documentation/ABI/testing/sysfs-bus-event_source-devices-hisi_ptt
@@ -0,0 +1,113 @@
+What: /sys/bus/event_source/devices/hisi_ptt<sicl_id>_<core_id>/tune
+Date: October 2022
+KernelVersion: 6.1
+Contact: Yicong Yang <yangyicong@hisilicon.com>
+Description: This directory contains files for tuning the PCIe link
+ parameters(events). Each file is named after the event
+ of the PCIe link.
+
+ See Documentation/trace/hisi-ptt.rst for more information.
+
+What: /sys/bus/event_source/devices/hisi_ptt<sicl_id>_<core_id>/tune/qos_tx_cpl
+Date: October 2022
+KernelVersion: 6.1
+Contact: Yicong Yang <yangyicong@hisilicon.com>
+Description: (RW) Controls the weight of Tx completion TLPs, which influence
+ the proportion of outbound completion TLPs on the PCIe link.
+ The available tune data is [0, 1, 2]. Writing a negative value
+ will return an error, and out of range values will be converted
+ to 2. The value indicates a probable level of the event.
+
+What: /sys/bus/event_source/devices/hisi_ptt<sicl_id>_<core_id>/tune/qos_tx_np
+Date: October 2022
+KernelVersion: 6.1
+Contact: Yicong Yang <yangyicong@hisilicon.com>
+Description: (RW) Controls the weight of Tx non-posted TLPs, which influence
+ the proportion of outbound non-posted TLPs on the PCIe link.
+ The available tune data is [0, 1, 2]. Writing a negative value
+ will return an error, and out of range values will be converted
+ to 2. The value indicates a probable level of the event.
+
+What: /sys/bus/event_source/devices/hisi_ptt<sicl_id>_<core_id>/tune/qos_tx_p
+Date: October 2022
+KernelVersion: 6.1
+Contact: Yicong Yang <yangyicong@hisilicon.com>
+Description: (RW) Controls the weight of Tx posted TLPs, which influence the
+ proportion of outbound posted TLPs on the PCIe link.
+ The available tune data is [0, 1, 2]. Writing a negative value
+ will return an error, and out of range values will be converted
+ to 2. The value indicates a probable level of the event.
+
+What: /sys/bus/event_source/devices/hisi_ptt<sicl_id>_<core_id>/tune/rx_alloc_buf_level
+Date: October 2022
+KernelVersion: 6.1
+Contact: Yicong Yang <yangyicong@hisilicon.com>
+Description: (RW) Control the allocated buffer watermark for inbound packets.
+ The packets will be stored in the buffer first and then transmitted
+ either when the watermark reached or when timed out.
+ The available tune data is [0, 1, 2]. Writing a negative value
+ will return an error, and out of range values will be converted
+ to 2. The value indicates a probable level of the event.
+
+What: /sys/bus/event_source/devices/hisi_ptt<sicl_id>_<core_id>/tune/tx_alloc_buf_level
+Date: October 2022
+KernelVersion: 6.1
+Contact: Yicong Yang <yangyicong@hisilicon.com>
+Description: (RW) Control the allocated buffer watermark of outbound packets.
+ The packets will be stored in the buffer first and then transmitted
+ either when the watermark reached or when timed out.
+ The available tune data is [0, 1, 2]. Writing a negative value
+ will return an error, and out of range values will be converted
+ to 2. The value indicates a probable level of the event.
+
+What: /sys/devices/hisi_ptt<sicl_id>_<core_id>/root_port_filters
+Date: May 2023
+KernelVersion: 6.5
+Contact: Yicong Yang <yangyicong@hisilicon.com>
+Description: This directory contains the files providing the PCIe Root Port filters
+ information used for PTT trace. Each file is named after the supported
+ Root Port device name <domain>:<bus>:<device>.<function>.
+
+ See the description of the "filter" in Documentation/trace/hisi-ptt.rst
+ for more information.
+
+What: /sys/devices/hisi_ptt<sicl_id>_<core_id>/root_port_filters/multiselect
+Date: May 2023
+KernelVersion: 6.5
+Contact: Yicong Yang <yangyicong@hisilicon.com>
+Description: (Read) Indicates if this kind of filter can be selected at the same
+ time as others filters, or must be used on it's own. 1 indicates
+ the former case and 0 indicates the latter.
+
+What: /sys/devices/hisi_ptt<sicl_id>_<core_id>/root_port_filters/<bdf>
+Date: May 2023
+KernelVersion: 6.5
+Contact: Yicong Yang <yangyicong@hisilicon.com>
+Description: (Read) Indicates the filter value of this Root Port filter, which
+ can be used to control the TLP headers to trace by the PTT trace.
+
+What: /sys/devices/hisi_ptt<sicl_id>_<core_id>/requester_filters
+Date: May 2023
+KernelVersion: 6.5
+Contact: Yicong Yang <yangyicong@hisilicon.com>
+Description: This directory contains the files providing the PCIe Requester filters
+ information used for PTT trace. Each file is named after the supported
+ Endpoint device name <domain>:<bus>:<device>.<function>.
+
+ See the description of the "filter" in Documentation/trace/hisi-ptt.rst
+ for more information.
+
+What: /sys/devices/hisi_ptt<sicl_id>_<core_id>/requester_filters/multiselect
+Date: May 2023
+KernelVersion: 6.5
+Contact: Yicong Yang <yangyicong@hisilicon.com>
+Description: (Read) Indicates if this kind of filter can be selected at the same
+ time as others filters, or must be used on it's own. 1 indicates
+ the former case and 0 indicates the latter.
+
+What: /sys/devices/hisi_ptt<sicl_id>_<core_id>/requester_filters/<bdf>
+Date: May 2023
+KernelVersion: 6.5
+Contact: Yicong Yang <yangyicong@hisilicon.com>
+Description: (Read) Indicates the filter value of this Requester filter, which
+ can be used to control the TLP headers to trace by the PTT trace.
diff --git a/Documentation/ABI/testing/sysfs-bus-event_source-devices-hv_gpci b/Documentation/ABI/testing/sysfs-bus-event_source-devices-hv_gpci
index 12e2bf92783f..40f7cd240591 100644
--- a/Documentation/ABI/testing/sysfs-bus-event_source-devices-hv_gpci
+++ b/Documentation/ABI/testing/sysfs-bus-event_source-devices-hv_gpci
@@ -80,3 +80,163 @@ Contact: Linux on PowerPC Developer List <linuxppc-dev@lists.ozlabs.org>
Description: read only
This sysfs file exposes the cpumask which is designated to make
HCALLs to retrieve hv-gpci pmu event counter data.
+
+What: /sys/devices/hv_gpci/interface/processor_bus_topology
+Date: July 2023
+Contact: Linux on PowerPC Developer List <linuxppc-dev@lists.ozlabs.org>
+Description: admin read only
+ This sysfs file exposes the system topology information by making HCALL
+ H_GET_PERF_COUNTER_INFO. The HCALL is made with counter request value
+ PROCESSOR_BUS_TOPOLOGY(0xD0).
+
+ * This sysfs file will be created only for power10 and above platforms.
+
+ * User needs root privileges to read data from this sysfs file.
+
+ * This sysfs file will be created, only when the HCALL returns "H_SUCCESS",
+ "H_AUTHORITY" or "H_PARAMETER" as the return type.
+
+ HCALL with return error type "H_AUTHORITY" can be resolved during
+ runtime by setting "Enable Performance Information Collection" option.
+
+ * The end user reading this sysfs file must decode the content as per
+ underlying platform/firmware.
+
+ Possible error codes while reading this sysfs file:
+
+ * "-EPERM" : Partition is not permitted to retrieve performance information,
+ required to set "Enable Performance Information Collection" option.
+
+ * "-EIO" : Can't retrieve system information because of invalid buffer length/invalid address
+ or because of some hardware error. Refer to getPerfCountInfo documentation for
+ more information.
+
+ * "-EFBIG" : System information exceeds PAGE_SIZE.
+
+What: /sys/devices/hv_gpci/interface/processor_config
+Date: July 2023
+Contact: Linux on PowerPC Developer List <linuxppc-dev@lists.ozlabs.org>
+Description: admin read only
+ This sysfs file exposes the system topology information by making HCALL
+ H_GET_PERF_COUNTER_INFO. The HCALL is made with counter request value
+ PROCESSOR_CONFIG(0x90).
+
+ * This sysfs file will be created only for power10 and above platforms.
+
+ * User needs root privileges to read data from this sysfs file.
+
+ * This sysfs file will be created, only when the HCALL returns "H_SUCCESS",
+ "H_AUTHORITY" or "H_PARAMETER" as the return type.
+
+ HCALL with return error type "H_AUTHORITY" can be resolved during
+ runtime by setting "Enable Performance Information Collection" option.
+
+ * The end user reading this sysfs file must decode the content as per
+ underlying platform/firmware.
+
+ Possible error codes while reading this sysfs file:
+
+ * "-EPERM" : Partition is not permitted to retrieve performance information,
+ required to set "Enable Performance Information Collection" option.
+
+ * "-EIO" : Can't retrieve system information because of invalid buffer length/invalid address
+ or because of some hardware error. Refer to getPerfCountInfo documentation for
+ more information.
+
+ * "-EFBIG" : System information exceeds PAGE_SIZE.
+
+What: /sys/devices/hv_gpci/interface/affinity_domain_via_virtual_processor
+Date: July 2023
+Contact: Linux on PowerPC Developer List <linuxppc-dev@lists.ozlabs.org>
+Description: admin read only
+ This sysfs file exposes the system topology information by making HCALL
+ H_GET_PERF_COUNTER_INFO. The HCALL is made with counter request value
+ AFFINITY_DOMAIN_INFORMATION_BY_VIRTUAL_PROCESSOR(0xA0).
+
+ * This sysfs file will be created only for power10 and above platforms.
+
+ * User needs root privileges to read data from this sysfs file.
+
+ * This sysfs file will be created, only when the HCALL returns "H_SUCCESS",
+ "H_AUTHORITY" or "H_PARAMETER" as the return type.
+
+ HCALL with return error type "H_AUTHORITY" can be resolved during
+ runtime by setting "Enable Performance Information Collection" option.
+
+ * The end user reading this sysfs file must decode the content as per
+ underlying platform/firmware.
+
+ Possible error codes while reading this sysfs file:
+
+ * "-EPERM" : Partition is not permitted to retrieve performance information,
+ required to set "Enable Performance Information Collection" option.
+
+ * "-EIO" : Can't retrieve system information because of invalid buffer length/invalid address
+ or because of some hardware error. Refer to getPerfCountInfo documentation for
+ more information.
+
+ * "-EFBIG" : System information exceeds PAGE_SIZE.
+
+What: /sys/devices/hv_gpci/interface/affinity_domain_via_domain
+Date: July 2023
+Contact: Linux on PowerPC Developer List <linuxppc-dev@lists.ozlabs.org>
+Description: admin read only
+ This sysfs file exposes the system topology information by making HCALL
+ H_GET_PERF_COUNTER_INFO. The HCALL is made with counter request value
+ AFFINITY_DOMAIN_INFORMATION_BY_DOMAIN(0xB0).
+
+ * This sysfs file will be created only for power10 and above platforms.
+
+ * User needs root privileges to read data from this sysfs file.
+
+ * This sysfs file will be created, only when the HCALL returns "H_SUCCESS",
+ "H_AUTHORITY" or "H_PARAMETER" as the return type.
+
+ HCALL with return error type "H_AUTHORITY" can be resolved during
+ runtime by setting "Enable Performance Information Collection" option.
+
+ * The end user reading this sysfs file must decode the content as per
+ underlying platform/firmware.
+
+ Possible error codes while reading this sysfs file:
+
+ * "-EPERM" : Partition is not permitted to retrieve performance information,
+ required to set "Enable Performance Information Collection" option.
+
+ * "-EIO" : Can't retrieve system information because of invalid buffer length/invalid address
+ or because of some hardware error. Refer to getPerfCountInfo documentation for
+ more information.
+
+ * "-EFBIG" : System information exceeds PAGE_SIZE.
+
+What: /sys/devices/hv_gpci/interface/affinity_domain_via_partition
+Date: July 2023
+Contact: Linux on PowerPC Developer List <linuxppc-dev@lists.ozlabs.org>
+Description: admin read only
+ This sysfs file exposes the system topology information by making HCALL
+ H_GET_PERF_COUNTER_INFO. The HCALL is made with counter request value
+ AFFINITY_DOMAIN_INFORMATION_BY_PARTITION(0xB1).
+
+ * This sysfs file will be created only for power10 and above platforms.
+
+ * User needs root privileges to read data from this sysfs file.
+
+ * This sysfs file will be created, only when the HCALL returns "H_SUCCESS",
+ "H_AUTHORITY" or "H_PARAMETER" as the return type.
+
+ HCALL with return error type "H_AUTHORITY" can be resolved during
+ runtime by setting "Enable Performance Information Collection" option.
+
+ * The end user reading this sysfs file must decode the content as per
+ underlying platform/firmware.
+
+ Possible error codes while reading this sysfs file:
+
+ * "-EPERM" : Partition is not permitted to retrieve performance information,
+ required to set "Enable Performance Information Collection" option.
+
+ * "-EIO" : Can't retrieve system information because of invalid buffer length/invalid address
+ or because of some hardware error. Refer to getPerfCountInfo documentation for
+ more information.
+
+ * "-EFBIG" : System information exceeds PAGE_SIZE.
diff --git a/Documentation/ABI/testing/sysfs-bus-event_source-devices-iommu b/Documentation/ABI/testing/sysfs-bus-event_source-devices-iommu
new file mode 100644
index 000000000000..d7af4919302e
--- /dev/null
+++ b/Documentation/ABI/testing/sysfs-bus-event_source-devices-iommu
@@ -0,0 +1,37 @@
+What: /sys/bus/event_source/devices/dmar*/format
+Date: Jan 2023
+KernelVersion: 6.3
+Contact: Kan Liang <kan.liang@linux.intel.com>
+Description: Read-only. Attribute group to describe the magic bits
+ that go into perf_event_attr.config,
+ perf_event_attr.config1 or perf_event_attr.config2 for
+ the IOMMU pmu. (See also
+ ABI/testing/sysfs-bus-event_source-devices-format).
+
+ Each attribute in this group defines a bit range in
+ perf_event_attr.config, perf_event_attr.config1,
+ or perf_event_attr.config2. All supported attributes
+ are listed below (See the VT-d Spec 4.0 for possible
+ attribute values)::
+
+ event = "config:0-27" - event ID
+ event_group = "config:28-31" - event group ID
+
+ filter_requester_en = "config1:0" - Enable Requester ID filter
+ filter_domain_en = "config1:1" - Enable Domain ID filter
+ filter_pasid_en = "config1:2" - Enable PASID filter
+ filter_ats_en = "config1:3" - Enable Address Type filter
+ filter_page_table_en= "config1:4" - Enable Page Table Level filter
+ filter_requester_id = "config1:16-31" - Requester ID filter
+ filter_domain = "config1:32-47" - Domain ID filter
+ filter_pasid = "config2:0-21" - PASID filter
+ filter_ats = "config2:24-28" - Address Type filter
+ filter_page_table = "config2:32-36" - Page Table Level filter
+
+What: /sys/bus/event_source/devices/dmar*/cpumask
+Date: Jan 2023
+KernelVersion: 6.3
+Contact: Kan Liang <kan.liang@linux.intel.com>
+Description: Read-only. This file always returns the CPU to which the
+ IOMMU pmu is bound for access to all IOMMU pmu performance
+ monitoring events.
diff --git a/Documentation/ABI/testing/sysfs-bus-event_source-devices-vpa-dtl b/Documentation/ABI/testing/sysfs-bus-event_source-devices-vpa-dtl
new file mode 100644
index 000000000000..7b7c789a5cf5
--- /dev/null
+++ b/Documentation/ABI/testing/sysfs-bus-event_source-devices-vpa-dtl
@@ -0,0 +1,25 @@
+What: /sys/bus/event_source/devices/vpa_dtl/format
+Date: February 2025
+Contact: Linux on PowerPC Developer List <linuxppc-dev at lists.ozlabs.org>
+Description: Read-only. Attribute group to describe the magic bits
+ that go into perf_event_attr.config for a particular pmu.
+ (See ABI/testing/sysfs-bus-event_source-devices-format).
+
+ Each attribute under this group defines a bit range of the
+ perf_event_attr.config. Supported attribute are listed
+ below::
+
+ event = "config:0-7" - event ID
+
+ For example::
+
+ dtl_cede = "event=0x1"
+
+What: /sys/bus/event_source/devices/vpa_dtl/events
+Date: February 2025
+Contact: Linux on PowerPC Developer List <linuxppc-dev at lists.ozlabs.org>
+Description: (RO) Attribute group to describe performance monitoring events
+ for the Virtual Processor Dispatch Trace Log. Each attribute in
+ this group describes a single performance monitoring event
+ supported by vpa_dtl pmu. The name of the file is the name of
+ the event (See ABI/testing/sysfs-bus-event_source-devices-events).
diff --git a/Documentation/ABI/testing/sysfs-bus-event_source-devices-vpa-pmu b/Documentation/ABI/testing/sysfs-bus-event_source-devices-vpa-pmu
new file mode 100644
index 000000000000..a116aee9709a
--- /dev/null
+++ b/Documentation/ABI/testing/sysfs-bus-event_source-devices-vpa-pmu
@@ -0,0 +1,25 @@
+What: /sys/bus/event_source/devices/vpa_pmu/format
+Date: November 2024
+Contact: Linux on PowerPC Developer List <linuxppc-dev@lists.ozlabs.org>
+Description: Read-only. Attribute group to describe the magic bits
+ that go into perf_event_attr.config for a particular pmu.
+ (See ABI/testing/sysfs-bus-event_source-devices-format).
+
+ Each attribute under this group defines a bit range of the
+ perf_event_attr.config. Supported attribute are listed
+ below::
+
+ event = "config:0-31" - event ID
+
+ For example::
+
+ l1_to_l2_lat = "event=0x1"
+
+What: /sys/bus/event_source/devices/vpa_pmu/events
+Date: November 2024
+Contact: Linux on PowerPC Developer List <linuxppc-dev@lists.ozlabs.org>
+Description: Read-only. Attribute group to describe performance monitoring
+ events for the Virtual Processor Area events. Each attribute
+ in this group describes a single performance monitoring event
+ supported by vpa_pmu. The name of the file is the name of
+ the event (See ABI/testing/sysfs-bus-event_source-devices-events).
diff --git a/Documentation/ABI/testing/sysfs-bus-fcoe b/Documentation/ABI/testing/sysfs-bus-fcoe
index 8fe787cc4ab7..5a4f2091ac37 100644
--- a/Documentation/ABI/testing/sysfs-bus-fcoe
+++ b/Documentation/ABI/testing/sysfs-bus-fcoe
@@ -31,7 +31,7 @@ Description: 'FCoE Controller' instances on the fcoe bus.
1) Write interface name to ctlr_create 2) Configure the FCoE
Controller (ctlr_X) 3) Enable the FCoE Controller to begin
discovery and login. The FCoE Controller is destroyed by
- writing it's name, i.e. ctlr_X to the ctlr_delete file.
+ writing its name, i.e. ctlr_X to the ctlr_delete file.
Attributes:
diff --git a/Documentation/ABI/testing/sysfs-bus-fsi-devices-sbefifo b/Documentation/ABI/testing/sysfs-bus-fsi-devices-sbefifo
index 531fe9d6b40a..c7393b4dd2d8 100644
--- a/Documentation/ABI/testing/sysfs-bus-fsi-devices-sbefifo
+++ b/Documentation/ABI/testing/sysfs-bus-fsi-devices-sbefifo
@@ -5,6 +5,6 @@ Description:
Indicates whether or not this SBE device has experienced a
timeout; i.e. the SBE did not respond within the time allotted
by the driver. A value of 1 indicates that a timeout has
- ocurred and no transfers have completed since the timeout. A
- value of 0 indicates that no timeout has ocurred, or if one
- has, more recent transfers have completed successful.
+ occurred and no transfers have completed since the timeout. A
+ value of 0 indicates that no timeout has occurred, or if one
+ has, more recent transfers have completed successfully.
diff --git a/Documentation/ABI/testing/sysfs-bus-i2c-devices-fsa9480 b/Documentation/ABI/testing/sysfs-bus-i2c-devices-fsa9480
index 42dfc9399d2d..288bc2fa9547 100644
--- a/Documentation/ABI/testing/sysfs-bus-i2c-devices-fsa9480
+++ b/Documentation/ABI/testing/sysfs-bus-i2c-devices-fsa9480
@@ -8,7 +8,7 @@ Description:
NONE no device
USB USB device is attached
UART UART is attached
- CHARGER Charger is attaced
+ CHARGER Charger is attached
JIG JIG is attached
======= ======================
diff --git a/Documentation/ABI/testing/sysfs-bus-i2c-devices-m24lr b/Documentation/ABI/testing/sysfs-bus-i2c-devices-m24lr
new file mode 100644
index 000000000000..7c51ce8d38ba
--- /dev/null
+++ b/Documentation/ABI/testing/sysfs-bus-i2c-devices-m24lr
@@ -0,0 +1,100 @@
+What: /sys/bus/i2c/devices/<busnum>-<primary-addr>/unlock
+Date: 2025-07-04
+KernelVersion: 6.17
+Contact: Abd-Alrhman Masalkhi <abd.masalkhi@gmail.com>
+Description:
+ Write-only attribute used to present a password and unlock
+ access to protected areas of the M24LR chip, including
+ configuration registers such as the Sector Security Status
+ (SSS) bytes. A valid password must be written to enable write
+ access to these regions via the I2C interface.
+
+ Format:
+ - Hexadecimal string representing a 32-bit (4-byte) password
+ - Accepts 1 to 8 hex digits (e.g., "c", "1F", "a1b2c3d4")
+ - No "0x" prefix, whitespace, or trailing newline
+ - Case-insensitive
+
+ Behavior:
+ - If the password matches the internal stored value,
+ access to protected memory/configuration is granted
+ - If the password does not match the internally stored value,
+ it will fail silently
+
+What: /sys/bus/i2c/devices/<busnum>-<primary-addr>/new_pass
+Date: 2025-07-04
+KernelVersion: 6.17
+Contact: Abd-Alrhman Masalkhi <abd.masalkhi@gmail.com>
+Description:
+ Write-only attribute used to update the password required to
+ unlock the M24LR chip.
+
+ Format:
+ - Hexadecimal string representing a new 32-bit password
+ - Accepts 1 to 8 hex digits (e.g., "1A", "ffff", "c0ffee00")
+ - No "0x" prefix, whitespace, or trailing newline
+ - Case-insensitive
+
+ Behavior:
+ - Overwrites the current password stored in the I2C password
+ register
+ - Requires the device to be unlocked before changing the
+ password
+ - If the device is locked, the write silently fails
+
+What: /sys/bus/i2c/devices/<busnum>-<primary-addr>/uid
+Date: 2025-07-04
+KernelVersion: 6.17
+Contact: Abd-Alrhman Masalkhi <abd.masalkhi@gmail.com>
+Description:
+ Read-only attribute that exposes the 8-byte unique identifier
+ programmed into the M24LR chip at the factory.
+
+ Format:
+ - Lowercase hexadecimal string representing a 64-bit value
+ - 1 to 16 hex digits (e.g., "e00204f12345678")
+ - No "0x" prefix
+ - Includes a trailing newline
+
+What: /sys/bus/i2c/devices/<busnum>-<primary-addr>/total_sectors
+Date: 2025-07-04
+KernelVersion: 6.17
+Contact: Abd-Alrhman Masalkhi <abd.masalkhi@gmail.com>
+Description:
+ Read-only attribute that exposes the total number of EEPROM
+ sectors available in the M24LR chip.
+
+ Format:
+ - 1 to 2 hex digits (e.g. "F")
+ - No "0x" prefix
+ - Includes a trailing newline
+
+ Notes:
+ - Value is encoded by the chip and corresponds to the EEPROM
+ size (e.g., 3 = 4 kbit for M24LR04E-R)
+
+What: /sys/bus/i2c/devices/<busnum>-<primary-addr>/sss
+Date: 2025-07-04
+KernelVersion: 6.17
+Contact: Abd-Alrhman Masalkhi <abd.masalkhi@gmail.com>
+Description:
+ Read/write binary attribute representing the Sector Security
+ Status (SSS) bytes for all EEPROM sectors in STMicroelectronics
+ M24LR chips.
+
+ Each EEPROM sector has one SSS byte, which controls I2C and
+ RF access through protection bits and optional password
+ authentication.
+
+ Format:
+ - The file contains one byte per EEPROM sector
+ - Byte at offset N corresponds to sector N
+ - Binary access only; use tools like dd, Python, or C that
+ support byte-level I/O and offset control.
+
+ Notes:
+ - The number of valid bytes in this file is equal to the
+ value exposed by 'total_sectors' file
+ - Write access requires prior password authentication in
+ I2C mode
+ - Refer to the M24LR datasheet for full SSS bit layout
diff --git a/Documentation/ABI/testing/sysfs-bus-i2c-devices-turris-omnia-mcu b/Documentation/ABI/testing/sysfs-bus-i2c-devices-turris-omnia-mcu
new file mode 100644
index 000000000000..35a8f6dae5bf
--- /dev/null
+++ b/Documentation/ABI/testing/sysfs-bus-i2c-devices-turris-omnia-mcu
@@ -0,0 +1,113 @@
+What: /sys/bus/i2c/devices/<mcu_device>/board_revision
+Date: September 2024
+KernelVersion: 6.11
+Contact: Marek Behún <kabel@kernel.org>
+Description: (RO) Contains board revision number.
+
+ Only available if board information is burned in the MCU (older
+ revisions have board information burned in the ATSHA204-A chip).
+
+ Format: %u.
+
+What: /sys/bus/i2c/devices/<mcu_device>/first_mac_address
+Date: September 2024
+KernelVersion: 6.11
+Contact: Marek Behún <kabel@kernel.org>
+Description: (RO) Contains device first MAC address. Each Turris Omnia is
+ allocated 3 MAC addresses. The two additional addresses are
+ computed from the first one by incrementing it.
+
+ Only available if board information is burned in the MCU (older
+ revisions have board information burned in the ATSHA204-A chip).
+
+ Format: %pM.
+
+What: /sys/bus/i2c/devices/<mcu_device>/front_button_mode
+Date: September 2024
+KernelVersion: 6.11
+Contact: Marek Behún <kabel@kernel.org>
+Description: (RW) The front button on the Turris Omnia router can be
+ configured either to change the intensity of all the LEDs on the
+ front panel, or to send the press event to the CPU as an
+ interrupt.
+
+ This file switches between these two modes:
+ - ``mcu`` makes the button press event be handled by the MCU to
+ change the LEDs panel intensity.
+ - ``cpu`` makes the button press event be handled by the CPU.
+
+ Format: %s.
+
+What: /sys/bus/i2c/devices/<mcu_device>/front_button_poweron
+Date: September 2024
+KernelVersion: 6.11
+Contact: Marek Behún <kabel@kernel.org>
+Description: (RW) Newer versions of the microcontroller firmware of the
+ Turris Omnia router support powering off the router into true
+ low power mode. The router can be powered on by pressing the
+ front button.
+
+ This file configures whether front button power on is enabled.
+
+ This file is present only if the power off feature is supported
+ by the firmware.
+
+ Format: %i.
+
+What: /sys/bus/i2c/devices/<mcu_device>/fw_features
+Date: September 2024
+KernelVersion: 6.11
+Contact: Marek Behún <kabel@kernel.org>
+Description: (RO) Newer versions of the microcontroller firmware report the
+ features they support. These can be read from this file. If the
+ MCU firmware is too old, this file reads 0x0.
+
+ Format: 0x%x.
+
+What: /sys/bus/i2c/devices/<mcu_device>/fw_version_hash_application
+Date: September 2024
+KernelVersion: 6.11
+Contact: Marek Behún <kabel@kernel.org>
+Description: (RO) Contains the version hash (commit hash) of the application
+ part of the microcontroller firmware.
+
+ Format: %s.
+
+What: /sys/bus/i2c/devices/<mcu_device>/fw_version_hash_bootloader
+Date: September 2024
+KernelVersion: 6.11
+Contact: Marek Behún <kabel@kernel.org>
+Description: (RO) Contains the version hash (commit hash) of the bootloader
+ part of the microcontroller firmware.
+
+ Format: %s.
+
+What: /sys/bus/i2c/devices/<mcu_device>/mcu_type
+Date: September 2024
+KernelVersion: 6.11
+Contact: Marek Behún <kabel@kernel.org>
+Description: (RO) Contains the microcontroller type (STM32, GD32, MKL).
+
+ Format: %s.
+
+What: /sys/bus/i2c/devices/<mcu_device>/reset_selector
+Date: September 2024
+KernelVersion: 6.11
+Contact: Marek Behún <kabel@kernel.org>
+Description: (RO) Contains the selected factory reset level, determined by
+ how long the rear reset button was held by the user during board
+ reset.
+
+ Format: %i.
+
+What: /sys/bus/i2c/devices/<mcu_device>/serial_number
+Date: September 2024
+KernelVersion: 6.11
+Contact: Marek Behún <kabel@kernel.org>
+Description: (RO) Contains the 64-bit board serial number in hexadecimal
+ format.
+
+ Only available if board information is burned in the MCU (older
+ revisions have board information burned in the ATSHA204-A chip).
+
+ Format: %016X.
diff --git a/Documentation/ABI/testing/sysfs-bus-i3c b/Documentation/ABI/testing/sysfs-bus-i3c
index 1f4a2662335b..c812ab180ff4 100644
--- a/Documentation/ABI/testing/sysfs-bus-i3c
+++ b/Documentation/ABI/testing/sysfs-bus-i3c
@@ -67,7 +67,7 @@ What: /sys/bus/i3c/devices/i3c-<bus-id>/pid
KernelVersion: 5.0
Contact: linux-i3c@vger.kernel.org
Description:
- PID stands for Provisional ID and is used to uniquely identify
+ PID stands for Provisioned ID and is used to uniquely identify
a device on a bus. This PID contains information about the
vendor, the part and an instance ID so that several devices of
the same type can be connected on the same bus.
@@ -88,6 +88,21 @@ Description:
This entry describes the HDRCAP of the master controller
driving the bus.
+What: /sys/bus/i3c/devices/i3c-<bus-id>/hotjoin
+KernelVersion: 6.8
+Contact: linux-i3c@vger.kernel.org
+Description:
+ I3C’s Hot-Join mechanism allows an I3C Device to inform the
+ Active Controller that a newly-joined Target is present on the
+ I3C Bus and is ready to receive a Dynamic Address, in order to
+ become fully functional on the Bus. Hot-Join is used when the
+ Target is mounted on the same I3C bus and remains depowered
+ until needed or until the Target is physically inserted into the
+ I3C bus
+
+ This entry allows to enable or disable Hot-join of the Current
+ Controller driving the bus.
+
What: /sys/bus/i3c/devices/i3c-<bus-id>/<bus-id>-<device-pid>
KernelVersion: 5.0
Contact: linux-i3c@vger.kernel.org
@@ -123,7 +138,7 @@ What: /sys/bus/i3c/devices/i3c-<bus-id>/<bus-id>-<device-pid>/pid
KernelVersion: 5.0
Contact: linux-i3c@vger.kernel.org
Description:
- PID stands for Provisional ID and is used to uniquely identify
+ PID stands for Provisioned ID and is used to uniquely identify
a device on a bus. This PID contains information about the
vendor, the part and an instance ID so that several devices of
the same type can be connected on the same bus.
diff --git a/Documentation/ABI/testing/sysfs-bus-iio b/Documentation/ABI/testing/sysfs-bus-iio
index c551301b33f1..5f87dcee78f7 100644
--- a/Documentation/ABI/testing/sysfs-bus-iio
+++ b/Documentation/ABI/testing/sysfs-bus-iio
@@ -79,6 +79,11 @@ Description:
* "accel-base"
* "accel-display"
+ For devices where an accelerometer is housed in the swivel camera subassembly
+ (for AR application), the following standardized label is used:
+
+ * "accel-camera"
+
What: /sys/bus/iio/devices/iio:deviceX/current_timestamp_clock
KernelVersion: 4.5
Contact: linux-iio@vger.kernel.org
@@ -89,6 +94,7 @@ Description:
What: /sys/bus/iio/devices/iio:deviceX/sampling_frequency
What: /sys/bus/iio/devices/iio:deviceX/in_intensity_sampling_frequency
What: /sys/bus/iio/devices/iio:deviceX/buffer/sampling_frequency
+What: /sys/bus/iio/devices/iio:deviceX/events/sampling_frequency
What: /sys/bus/iio/devices/triggerX/sampling_frequency
KernelVersion: 2.6.35
Contact: linux-iio@vger.kernel.org
@@ -102,6 +108,9 @@ Description:
relevant directories. If it affects all of the above
then it is to be found in the base device directory.
+ The stm32-timer-trigger has the additional characteristic that
+ a sampling_frequency of 0 is defined to stop sampling.
+
What: /sys/bus/iio/devices/iio:deviceX/sampling_frequency_available
What: /sys/bus/iio/devices/iio:deviceX/in_intensity_sampling_frequency_available
What: /sys/bus/iio/devices/iio:deviceX/in_proximity_sampling_frequency_available
@@ -132,8 +141,6 @@ Description:
What: /sys/bus/iio/devices/iio:deviceX/in_voltageY_raw
What: /sys/bus/iio/devices/iio:deviceX/in_voltageY_supply_raw
-What: /sys/bus/iio/devices/iio:deviceX/in_voltageY_i_raw
-What: /sys/bus/iio/devices/iio:deviceX/in_voltageY_q_raw
KernelVersion: 2.6.35
Contact: linux-iio@vger.kernel.org
Description:
@@ -160,19 +167,18 @@ Description:
is required is a consistent labeling. Units after application
of scale and offset are millivolts.
-What: /sys/bus/iio/devices/iio:deviceX/in_currentY_raw
-What: /sys/bus/iio/devices/iio:deviceX/in_currentY_supply_raw
-KernelVersion: 3.17
+What: /sys/bus/iio/devices/iio:deviceX/in_altvoltageY_rms_raw
+KernelVersion: 6.18
Contact: linux-iio@vger.kernel.org
Description:
- Raw (unscaled no bias removal etc.) current measurement from
- channel Y. In special cases where the channel does not
- correspond to externally available input one of the named
- versions may be used. The number must always be specified and
- unique to allow association with event codes. Units after
- application of scale and offset are milliamps.
+ Raw (unscaled) Root Mean Square (RMS) voltage measurement from
+ channel Y. Units after application of scale and offset are
+ millivolts.
What: /sys/bus/iio/devices/iio:deviceX/in_powerY_raw
+What: /sys/bus/iio/devices/iio:deviceX/in_powerY_active_raw
+What: /sys/bus/iio/devices/iio:deviceX/in_powerY_reactive_raw
+What: /sys/bus/iio/devices/iio:deviceX/in_powerY_apparent_raw
KernelVersion: 4.5
Contact: linux-iio@vger.kernel.org
Description:
@@ -181,6 +187,13 @@ Description:
unique to allow association with event codes. Units after
application of scale and offset are milliwatts.
+What: /sys/bus/iio/devices/iio:deviceX/in_powerY_powerfactor
+KernelVersion: 6.18
+Contact: linux-iio@vger.kernel.org
+Description:
+ Power factor measurement from channel Y. Power factor is the
+ ratio of active power to apparent power. The value is unitless.
+
What: /sys/bus/iio/devices/iio:deviceX/in_capacitanceY_raw
KernelVersion: 3.2
Contact: linux-iio@vger.kernel.org
@@ -188,7 +201,7 @@ Description:
Raw capacitance measurement from channel Y. Units after
application of scale and offset are nanofarads.
-What: /sys/.../iio:deviceX/in_capacitanceY-in_capacitanceZ_raw
+What: /sys/.../iio:deviceX/in_capacitanceY-capacitanceZ_raw
KernelVersion: 3.2
Contact: linux-iio@vger.kernel.org
Description:
@@ -199,8 +212,27 @@ Description:
is required is a consistent labeling. Units after application
of scale and offset are nanofarads.
+What: /sys/.../iio:deviceX/in_capacitanceY-capacitanceZ_zeropoint
+KernelVersion: 6.1
+Contact: linux-iio@vger.kernel.org
+Description:
+ For differential channels, this an offset that is applied
+ equally to both inputs. As the reading is of the difference
+ between the two inputs, this should not be applied to the _raw
+ reading by userspace (unlike _offset) and unlike calibbias
+ it does not affect the differential value measured because
+ the effect of _zeropoint cancels out across the two inputs
+ that make up the differential pair. It's purpose is to bring
+ the individual signals, before the differential is measured,
+ within the measurement range of the device. The naming is
+ chosen because if the separate inputs that make the
+ differential pair are drawn on a graph in their
+ _raw units, this is the value that the zero point on the
+ measurement axis represents. It is expressed with the
+ same scaling as _raw.
+
What: /sys/bus/iio/devices/iio:deviceX/in_temp_raw
-What: /sys/bus/iio/devices/iio:deviceX/in_tempX_raw
+What: /sys/bus/iio/devices/iio:deviceX/in_tempY_raw
What: /sys/bus/iio/devices/iio:deviceX/in_temp_x_raw
What: /sys/bus/iio/devices/iio:deviceX/in_temp_y_raw
What: /sys/bus/iio/devices/iio:deviceX/in_temp_ambient_raw
@@ -216,7 +248,8 @@ Description:
less measurements. Units after application of scale and offset
are milli degrees Celsius.
-What: /sys/bus/iio/devices/iio:deviceX/in_tempX_input
+What: /sys/bus/iio/devices/iio:deviceX/in_tempY_input
+What: /sys/bus/iio/devices/iio:deviceX/in_temp_input
KernelVersion: 2.6.38
Contact: linux-iio@vger.kernel.org
Description:
@@ -233,6 +266,15 @@ Description:
Has all of the equivalent parameters as per voltageY. Units
after application of scale and offset are m/s^2.
+What: /sys/bus/iio/devices/iio:deviceX/in_accel_linear_x_raw
+What: /sys/bus/iio/devices/iio:deviceX/in_accel_linear_y_raw
+What: /sys/bus/iio/devices/iio:deviceX/in_accel_linear_z_raw
+KernelVersion: 6.1
+Contact: linux-iio@vger.kernel.org
+Description:
+ As per in_accel_X_raw attributes, but minus the
+ acceleration due to gravity.
+
What: /sys/bus/iio/devices/iio:deviceX/in_gravity_x_raw
What: /sys/bus/iio/devices/iio:deviceX/in_gravity_y_raw
What: /sys/bus/iio/devices/iio:deviceX/in_gravity_z_raw
@@ -243,6 +285,35 @@ Description:
but should match other such assignments on device).
Units after application of scale and offset are m/s^2.
+What: /sys/bus/iio/devices/iio:deviceX/in_deltaangl_x_raw
+What: /sys/bus/iio/devices/iio:deviceX/in_deltaangl_y_raw
+What: /sys/bus/iio/devices/iio:deviceX/in_deltaangl_z_raw
+KernelVersion: 6.5
+Contact: linux-iio@vger.kernel.org
+Description:
+ Angular displacement between two consecutive samples on x, y or
+ z (may be arbitrarily assigned but should match other such
+ assignments on device).
+ In order to compute the total angular displacement during a
+ desired period of time, the application should sum-up the delta
+ angle samples acquired during that time.
+ Units after application of scale and offset are radians.
+
+What: /sys/bus/iio/devices/iio:deviceX/in_deltavelocity_x_raw
+What: /sys/bus/iio/devices/iio:deviceX/in_deltavelocity_y_raw
+What: /sys/bus/iio/devices/iio:deviceX/in_deltavelocity_z_raw
+KernelVersion: 6.5
+Contact: linux-iio@vger.kernel.org
+Description:
+ The linear velocity change between two consecutive samples on x,
+ y or z (may be arbitrarily assigned but should match other such
+ assignments on device).
+ In order to compute the total linear velocity change during a
+ desired period of time, the application should sum-up the delta
+ velocity samples acquired during that time.
+ Units after application of scale and offset are meters per
+ second.
+
What: /sys/bus/iio/devices/iio:deviceX/in_angl_raw
What: /sys/bus/iio/devices/iio:deviceX/in_anglY_raw
KernelVersion: 4.17
@@ -297,10 +368,21 @@ Description:
What: /sys/bus/iio/devices/iio:deviceX/in_accel_x_peak_raw
What: /sys/bus/iio/devices/iio:deviceX/in_accel_y_peak_raw
What: /sys/bus/iio/devices/iio:deviceX/in_accel_z_peak_raw
+What: /sys/bus/iio/devices/iio:deviceX/in_humidityrelative_peak_raw
+What: /sys/bus/iio/devices/iio:deviceX/in_temp_peak_raw
KernelVersion: 2.6.36
Contact: linux-iio@vger.kernel.org
Description:
- Highest value since some reset condition. These
+ Highest value since some reset condition. These
+ attributes allow access to this and are otherwise
+ the direct equivalent of the <type>Y[_name]_raw attributes.
+
+What: /sys/bus/iio/devices/iio:deviceX/in_humidityrelative_trough_raw
+What: /sys/bus/iio/devices/iio:deviceX/in_temp_trough_raw
+KernelVersion: 6.7
+Contact: linux-iio@vger.kernel.org
+Description:
+ Lowest value since some reset condition. These
attributes allow access to this and are otherwise
the direct equivalent of the <type>Y[_name]_raw attributes.
@@ -339,11 +421,11 @@ Contact: linux-iio@vger.kernel.org
Description:
Scaled humidity measurement in milli percent.
-What: /sys/bus/iio/devices/iio:deviceX/in_X_mean_raw
+What: /sys/bus/iio/devices/iio:deviceX/in_Y_mean_raw
KernelVersion: 3.5
Contact: linux-iio@vger.kernel.org
Description:
- Averaged raw measurement from channel X. The number of values
+ Averaged raw measurement from channel Y. The number of values
used for averaging is device specific. The converting rules for
normal raw values also applies to the averaged raw values.
@@ -351,18 +433,14 @@ What: /sys/bus/iio/devices/iio:deviceX/in_accel_offset
What: /sys/bus/iio/devices/iio:deviceX/in_accel_x_offset
What: /sys/bus/iio/devices/iio:deviceX/in_accel_y_offset
What: /sys/bus/iio/devices/iio:deviceX/in_accel_z_offset
+What: /sys/bus/iio/devices/iio:deviceX/in_altvoltage_q_offset
+What: /sys/bus/iio/devices/iio:deviceX/in_altvoltage_i_offset
What: /sys/bus/iio/devices/iio:deviceX/in_voltageY_offset
What: /sys/bus/iio/devices/iio:deviceX/in_voltage_offset
What: /sys/bus/iio/devices/iio:deviceX/in_voltageY_i_offset
What: /sys/bus/iio/devices/iio:deviceX/in_voltageY_q_offset
-What: /sys/bus/iio/devices/iio:deviceX/in_voltage_q_offset
-What: /sys/bus/iio/devices/iio:deviceX/in_voltage_i_offset
What: /sys/bus/iio/devices/iio:deviceX/in_currentY_offset
What: /sys/bus/iio/devices/iio:deviceX/in_current_offset
-What: /sys/bus/iio/devices/iio:deviceX/in_currentY_i_offset
-What: /sys/bus/iio/devices/iio:deviceX/in_currentY_q_offset
-What: /sys/bus/iio/devices/iio:deviceX/in_current_q_offset
-What: /sys/bus/iio/devices/iio:deviceX/in_current_i_offset
What: /sys/bus/iio/devices/iio:deviceX/in_tempY_offset
What: /sys/bus/iio/devices/iio:deviceX/in_temp_offset
What: /sys/bus/iio/devices/iio:deviceX/in_pressureY_offset
@@ -371,7 +449,7 @@ What: /sys/bus/iio/devices/iio:deviceX/in_humidityrelative_offset
What: /sys/bus/iio/devices/iio:deviceX/in_magn_offset
What: /sys/bus/iio/devices/iio:deviceX/in_rot_offset
What: /sys/bus/iio/devices/iio:deviceX/in_angl_offset
-What: /sys/bus/iio/devices/iio:deviceX/in_capacitanceX_offset
+What: /sys/bus/iio/devices/iio:deviceX/in_capacitanceY_offset
KernelVersion: 2.6.35
Contact: linux-iio@vger.kernel.org
Description:
@@ -390,21 +468,15 @@ Description:
to the _raw output.
What: /sys/bus/iio/devices/iio:deviceX/in_voltageY_scale
-What: /sys/bus/iio/devices/iio:deviceX/in_voltageY_i_scale
What: /sys/bus/iio/devices/iio:deviceX/in_voltageY_q_scale
What: /sys/bus/iio/devices/iio:deviceX/in_voltageY_supply_scale
What: /sys/bus/iio/devices/iio:deviceX/in_voltage_scale
-What: /sys/bus/iio/devices/iio:deviceX/in_voltage_i_scale
-What: /sys/bus/iio/devices/iio:deviceX/in_voltage_q_scale
What: /sys/bus/iio/devices/iio:deviceX/in_voltage-voltage_scale
What: /sys/bus/iio/devices/iio:deviceX/out_voltageY_scale
What: /sys/bus/iio/devices/iio:deviceX/out_altvoltageY_scale
What: /sys/bus/iio/devices/iio:deviceX/in_currentY_scale
What: /sys/bus/iio/devices/iio:deviceX/in_currentY_supply_scale
What: /sys/bus/iio/devices/iio:deviceX/in_current_scale
-What: /sys/bus/iio/devices/iio:deviceX/in_currentY_i_scale
-What: /sys/bus/iio/devices/iio:deviceX/in_currentY_q_scale
-What: /sys/bus/iio/devices/iio:deviceX/in_current_i_scale
What: /sys/bus/iio/devices/iio:deviceX/in_current_q_scale
What: /sys/bus/iio/devices/iio:deviceX/in_accel_scale
What: /sys/bus/iio/devices/iio:deviceX/in_accel_peak_scale
@@ -425,10 +497,15 @@ What: /sys/bus/iio/devices/iio:deviceX/in_humidityrelative_scale
What: /sys/bus/iio/devices/iio:deviceX/in_velocity_sqrt(x^2+y^2+z^2)_scale
What: /sys/bus/iio/devices/iio:deviceX/in_illuminance_scale
What: /sys/bus/iio/devices/iio:deviceX/in_countY_scale
+What: /sys/bus/iio/devices/iio:deviceX/in_deltaangl_scale
+What: /sys/bus/iio/devices/iio:deviceX/in_deltavelocity_scale
What: /sys/bus/iio/devices/iio:deviceX/in_angl_scale
What: /sys/bus/iio/devices/iio:deviceX/in_intensity_x_scale
What: /sys/bus/iio/devices/iio:deviceX/in_intensity_y_scale
What: /sys/bus/iio/devices/iio:deviceX/in_intensity_z_scale
+What: /sys/bus/iio/devices/iio:deviceX/in_intensity_red_scale
+What: /sys/bus/iio/devices/iio:deviceX/in_intensity_green_scale
+What: /sys/bus/iio/devices/iio:deviceX/in_intensity_blue_scale
What: /sys/bus/iio/devices/iio:deviceX/in_concentration_co2_scale
KernelVersion: 2.6.35
Contact: linux-iio@vger.kernel.org
@@ -444,13 +521,27 @@ Description:
What: /sys/bus/iio/devices/iio:deviceX/in_accel_x_calibbias
What: /sys/bus/iio/devices/iio:deviceX/in_accel_y_calibbias
What: /sys/bus/iio/devices/iio:deviceX/in_accel_z_calibbias
+What: /sys/bus/iio/devices/iio:deviceX/in_altvoltageY_i_calibbias
+What: /sys/bus/iio/devices/iio:deviceX/in_altvoltageY_q_calibbias
What: /sys/bus/iio/devices/iio:deviceX/in_anglvel_x_calibbias
What: /sys/bus/iio/devices/iio:deviceX/in_anglvel_y_calibbias
What: /sys/bus/iio/devices/iio:deviceX/in_anglvel_z_calibbias
+What: /sys/bus/iio/devices/iio:deviceX/in_capacitance_calibbias
+What: /sys/bus/iio/devices/iio:deviceX/in_illuminance_calibbias
What: /sys/bus/iio/devices/iio:deviceX/in_illuminance0_calibbias
-What: /sys/bus/iio/devices/iio:deviceX/in_proximity0_calibbias
-What: /sys/bus/iio/devices/iio:deviceX/in_pressureY_calibbias
+What: /sys/bus/iio/devices/iio:deviceX/in_intensityY_calibbias
+What: /sys/bus/iio/devices/iio:deviceX/in_magn_x_calibbias
+What: /sys/bus/iio/devices/iio:deviceX/in_magn_y_calibbias
+What: /sys/bus/iio/devices/iio:deviceX/in_magn_z_calibbias
What: /sys/bus/iio/devices/iio:deviceX/in_pressure_calibbias
+What: /sys/bus/iio/devices/iio:deviceX/in_pressureY_calibbias
+What: /sys/bus/iio/devices/iio:deviceX/in_proximity_calibbias
+What: /sys/bus/iio/devices/iio:deviceX/in_proximity0_calibbias
+What: /sys/bus/iio/devices/iio:deviceX/in_resistance_calibbias
+What: /sys/bus/iio/devices/iio:deviceX/in_temp_calibbias
+What: /sys/bus/iio/devices/iio:deviceX/in_voltageY_calibbias
+What: /sys/bus/iio/devices/iio:deviceX/out_currentY_calibbias
+What: /sys/bus/iio/devices/iio:deviceX/out_voltageY_calibbias
KernelVersion: 2.6.35
Contact: linux-iio@vger.kernel.org
Description:
@@ -462,6 +553,10 @@ Description:
What: /sys/bus/iio/devices/iio:deviceX/in_accel_calibbias_available
What: /sys/bus/iio/devices/iio:deviceX/in_anglvel_calibbias_available
+What: /sys/bus/iio/devices/iio:deviceX/in_temp_calibbias_available
+What: /sys/bus/iio/devices/iio:deviceX/in_proximity_calibbias_available
+What: /sys/bus/iio/devices/iio:deviceX/in_voltageY_calibbias_available
+What: /sys/bus/iio/devices/iio:deviceX/out_voltageY_calibbias_available
KernelVersion: 5.8
Contact: linux-iio@vger.kernel.org
Description:
@@ -470,24 +565,54 @@ Description:
- a small discrete set of values like "0 2 4 6 8"
- a range specified as "[min step max]"
-What: /sys/bus/iio/devices/iio:deviceX/in_voltageY_calibscale
-What: /sys/bus/iio/devices/iio:deviceX/in_voltageY_supply_calibscale
-What: /sys/bus/iio/devices/iio:deviceX/in_voltageY_i_calibscale
-What: /sys/bus/iio/devices/iio:deviceX/in_voltageY_q_calibscale
-What: /sys/bus/iio/devices/iio:deviceX/in_voltage_i_calibscale
-What: /sys/bus/iio/devices/iio:deviceX/in_voltage_q_calibscale
-What: /sys/bus/iio/devices/iio:deviceX/in_voltage_calibscale
+What: /sys/bus/iio/devices/iio:deviceX/in_voltageY_convdelay
+KernelVersion: 6.17
+Contact: linux-iio@vger.kernel.org
+Description:
+ Delay of start of conversion from common reference point shared
+ by all channels. Can be writable when used to compensate for
+ delay variation introduced by external filters feeding a
+ simultaneous sampling ADC.
+
+ E.g., for the ad7606 ADC series, this value is intended as a
+ configurable time delay in seconds, to correct delay introduced
+ by an optional external filtering circuit.
+
+What: /sys/bus/iio/devices/iio:deviceX/in_voltageY_convdelay_available
+KernelVersion: 6.16
+Contact: linux-iio@vger.kernel.org
+Description:
+ Available values of convdelay. Maybe expressed as:
+
+ - a range specified as "[min step max]"
+
+ If shared across all channels, <type>_convdelay_available
+ is used.
+
What: /sys/bus/iio/devices/iio:deviceX/in_accel_x_calibscale
What: /sys/bus/iio/devices/iio:deviceX/in_accel_y_calibscale
What: /sys/bus/iio/devices/iio:deviceX/in_accel_z_calibscale
+What: /sys/bus/iio/devices/iio:deviceX/in_altvoltage_calibscale
What: /sys/bus/iio/devices/iio:deviceX/in_anglvel_x_calibscale
What: /sys/bus/iio/devices/iio:deviceX/in_anglvel_y_calibscale
What: /sys/bus/iio/devices/iio:deviceX/in_anglvel_z_calibscale
+What: /sys/bus/iio/devices/iio:deviceX/in_capacitance_calibscale
+What: /sys/bus/iio/devices/iio:deviceX/in_illuminance_calibscale
What: /sys/bus/iio/devices/iio:deviceX/in_illuminance0_calibscale
-What: /sys/bus/iio/devices/iio:deviceX/in_proximity0_calibscale
-What: /sys/bus/iio/devices/iio:deviceX/in_pressureY_calibscale
+What: /sys/bus/iio/devices/iio:deviceX/in_intensity_both_calibscale
+What: /sys/bus/iio/devices/iio:deviceX/in_intensity_calibscale
+What: /sys/bus/iio/devices/iio:deviceX/in_intensity_ir_calibscale
+What: /sys/bus/iio/devices/iio:deviceX/in_magn_x_calibscale
+What: /sys/bus/iio/devices/iio:deviceX/in_magn_y_calibscale
+What: /sys/bus/iio/devices/iio:deviceX/in_magn_z_calibscale
What: /sys/bus/iio/devices/iio:deviceX/in_pressure_calibscale
-What: /sys/bus/iio/devices/iio:deviceX/in_illuminance_calibscale
+What: /sys/bus/iio/devices/iio:deviceX/in_pressureY_calibscale
+What: /sys/bus/iio/devices/iio:deviceX/in_proximity0_calibscale
+What: /sys/bus/iio/devices/iio:deviceX/in_voltage_calibscale
+What: /sys/bus/iio/devices/iio:deviceX/in_voltageY_calibscale
+What: /sys/bus/iio/devices/iio:deviceX/in_voltageY_supply_calibscale
+What: /sys/bus/iio/devices/iio:deviceX/out_currentY_calibscale
+What: /sys/bus/iio/devices/iio:deviceX/out_voltageY_calibscale
KernelVersion: 2.6.35
Contact: linux-iio@vger.kernel.org
Description:
@@ -495,6 +620,20 @@ Description:
production inaccuracies). If shared across all channels,
<type>_calibscale is used.
+What: /sys/bus/iio/devices/iio:deviceX/in_illuminanceY_calibscale_available
+What: /sys/bus/iio/devices/iio:deviceX/in_intensityY_calibscale_available
+What: /sys/bus/iio/devices/iio:deviceX/in_proximityY_calibscale_available
+What: /sys/bus/iio/devices/iio:deviceX/in_voltageY_calibscale_available
+KernelVersion: 4.8
+Contact: linux-iio@vger.kernel.org
+Description:
+ Available values of calibscale. Maybe expressed as either of:
+
+ - a small discrete set of values like "1 8 16"
+ - a range specified as "[min step max]"
+
+ If shared across all channels, <type>_calibscale_available is used.
+
What: /sys/bus/iio/devices/iio:deviceX/in_activity_calibgender
What: /sys/bus/iio/devices/iio:deviceX/in_energy_calibgender
What: /sys/bus/iio/devices/iio:deviceX/in_distance_calibgender
@@ -539,10 +678,10 @@ What: /sys/.../iio:deviceX/in_magn_scale_available
What: /sys/.../iio:deviceX/in_illuminance_scale_available
What: /sys/.../iio:deviceX/in_intensity_scale_available
What: /sys/.../iio:deviceX/in_proximity_scale_available
-What: /sys/.../iio:deviceX/in_voltageX_scale_available
+What: /sys/.../iio:deviceX/in_voltageY_scale_available
What: /sys/.../iio:deviceX/in_voltage-voltage_scale_available
-What: /sys/.../iio:deviceX/out_voltageX_scale_available
-What: /sys/.../iio:deviceX/out_altvoltageX_scale_available
+What: /sys/.../iio:deviceX/out_voltageY_scale_available
+What: /sys/.../iio:deviceX/out_altvoltageY_scale_available
What: /sys/.../iio:deviceX/in_capacitance_scale_available
What: /sys/.../iio:deviceX/in_pressure_scale_available
What: /sys/.../iio:deviceX/in_pressureY_scale_available
@@ -550,7 +689,9 @@ KernelVersion: 2.6.35
Contact: linux-iio@vger.kernel.org
Description:
If a discrete set of scale values is available, they
- are listed in this attribute.
+ are listed in this attribute. Unlike illumination,
+ multiplying intensity by intensity_scale does not
+ yield value with any standardized unit.
What: /sys/bus/iio/devices/iio:deviceX/out_voltageY_hardwaregain
What: /sys/bus/iio/devices/iio:deviceX/in_intensity_hardwaregain
@@ -558,6 +699,7 @@ What: /sys/bus/iio/devices/iio:deviceX/in_intensity_red_hardwaregain
What: /sys/bus/iio/devices/iio:deviceX/in_intensity_green_hardwaregain
What: /sys/bus/iio/devices/iio:deviceX/in_intensity_blue_hardwaregain
What: /sys/bus/iio/devices/iio:deviceX/in_intensity_clear_hardwaregain
+What: /sys/bus/iio/devices/iio:deviceX/in_illuminance_hardwaregain
KernelVersion: 2.6.35
Contact: linux-iio@vger.kernel.org
Description:
@@ -625,7 +767,10 @@ Description:
1kohm_to_gnd: connected to ground via an 1kOhm resistor,
2.5kohm_to_gnd: connected to ground via a 2.5kOhm resistor,
6kohm_to_gnd: connected to ground via a 6kOhm resistor,
+ 7.7kohm_to_gnd: connected to ground via a 7.7kOhm resistor,
20kohm_to_gnd: connected to ground via a 20kOhm resistor,
+ 32kohm_to_gnd: connected to ground via a 32kOhm resistor,
+ 42kohm_to_gnd: connected to ground via a 42kOhm resistor,
90kohm_to_gnd: connected to ground via a 90kOhm resistor,
100kohm_to_gnd: connected to ground via an 100kOhm resistor,
125kohm_to_gnd: connected to ground via an 125kOhm resistor,
@@ -686,7 +831,11 @@ Description:
all the other channels, since it involves changing the VCO
fundamental output frequency.
+What: /sys/bus/iio/devices/iio:deviceX/in_altvoltageY_i_phase
+What: /sys/bus/iio/devices/iio:deviceX/in_altvoltageY_q_phase
What: /sys/bus/iio/devices/iio:deviceX/out_altvoltageY_phase
+What: /sys/bus/iio/devices/iio:deviceX/out_altvoltageY_i_phase
+What: /sys/bus/iio/devices/iio:deviceX/out_altvoltageY_q_phase
KernelVersion: 3.4.0
Contact: linux-iio@vger.kernel.org
Description:
@@ -749,6 +898,7 @@ What: /sys/.../iio:deviceX/events/in_tempY_thresh_rising_en
What: /sys/.../iio:deviceX/events/in_tempY_thresh_falling_en
What: /sys/.../iio:deviceX/events/in_capacitanceY_thresh_rising_en
What: /sys/.../iio:deviceX/events/in_capacitanceY_thresh_falling_en
+What: /sys/.../iio:deviceX/events/in_pressure_thresh_rising_en
KernelVersion: 2.6.37
Contact: linux-iio@vger.kernel.org
Description:
@@ -777,6 +927,7 @@ What: /sys/.../iio:deviceX/events/in_accel_y_roc_rising_en
What: /sys/.../iio:deviceX/events/in_accel_y_roc_falling_en
What: /sys/.../iio:deviceX/events/in_accel_z_roc_rising_en
What: /sys/.../iio:deviceX/events/in_accel_z_roc_falling_en
+What: /sys/.../iio:deviceX/events/in_accel_x&y&z_roc_rising_en
What: /sys/.../iio:deviceX/events/in_anglvel_x_roc_rising_en
What: /sys/.../iio:deviceX/events/in_anglvel_x_roc_falling_en
What: /sys/.../iio:deviceX/events/in_anglvel_y_roc_rising_en
@@ -852,6 +1003,7 @@ Description:
to the raw signal, allowing slow tracking to resume and the
adaptive threshold event detection to function as expected.
+What: /sys/.../events/in_accel_mag_adaptive_rising_value
What: /sys/.../events/in_accel_thresh_rising_value
What: /sys/.../events/in_accel_thresh_falling_value
What: /sys/.../events/in_accel_x_raw_thresh_rising_value
@@ -896,6 +1048,7 @@ What: /sys/.../events/in_capacitanceY_thresh_rising_value
What: /sys/.../events/in_capacitanceY_thresh_falling_value
What: /sys/.../events/in_capacitanceY_thresh_adaptive_rising_value
What: /sys/.../events/in_capacitanceY_thresh_falling_rising_value
+What: /sys/.../events/in_pressure_thresh_rising_value
KernelVersion: 2.6.37
Contact: linux-iio@vger.kernel.org
Description:
@@ -998,6 +1151,7 @@ Description:
will get activated once in_voltage0_raw goes above 1200 and will become
deactivated again once the value falls below 1150.
+What: /sys/.../events/in_accel_roc_rising_value
What: /sys/.../events/in_accel_x_raw_roc_rising_value
What: /sys/.../events/in_accel_x_raw_roc_falling_value
What: /sys/.../events/in_accel_y_raw_roc_rising_value
@@ -1044,6 +1198,8 @@ Description:
value is in raw device units or in processed units (as _raw
and _input do on sysfs direct channel read attributes).
+What: /sys/.../events/in_accel_mag_adaptive_rising_period
+What: /sys/.../events/in_accel_roc_rising_period
What: /sys/.../events/in_accel_x_thresh_rising_period
What: /sys/.../events/in_accel_x_thresh_falling_period
What: /sys/.../events/in_accel_x_roc_rising_period
@@ -1213,6 +1369,41 @@ Description:
number or direction is not specified, applies to all channels of
this type.
+What: /sys/.../iio:deviceX/events/in_accel_x_mag_adaptive_rising_en
+What: /sys/.../iio:deviceX/events/in_accel_y_mag_adaptive_rising_en
+What: /sys/.../iio:deviceX/events/in_accel_z_mag_adaptive_rising_en
+KernelVersion: 2.6.37
+Contact: linux-iio@vger.kernel.org
+Description:
+ Similar to in_accel_x_thresh[_rising|_falling]_en, but here the
+ magnitude of the channel is compared to the adaptive threshold.
+
+What: /sys/.../iio:deviceX/events/in_accel_mag_referenced_en
+What: /sys/.../iio:deviceX/events/in_accel_mag_referenced_rising_en
+What: /sys/.../iio:deviceX/events/in_accel_mag_referenced_falling_en
+What: /sys/.../iio:deviceX/events/in_accel_y_mag_referenced_en
+What: /sys/.../iio:deviceX/events/in_accel_y_mag_referenced_rising_en
+What: /sys/.../iio:deviceX/events/in_accel_y_mag_referenced_falling_en
+KernelVersion: 5.18
+Contact: linux-iio@vger.kernel.org
+Description:
+ Similar to in_accel_mag[_y][_rising|_falling]_en, but the event
+ value is relative to a reference magnitude. The reference magnitude
+ includes the graviational acceleration.
+
+What: /sys/.../iio:deviceX/events/in_accel_mag_referenced_value
+What: /sys/.../iio:deviceX/events/in_accel_mag_referenced_rising_value
+What: /sys/.../iio:deviceX/events/in_accel_mag_referenced_falling_value
+What: /sys/.../iio:deviceX/events/in_accel_y_mag_referenced_value
+What: /sys/.../iio:deviceX/events/in_accel_y_mag_referenced_rising_value
+What: /sys/.../iio:deviceX/events/in_accel_y_mag_referenced_falling_value
+KernelVersion: 5.18
+Contact: linux-iio@vger.kernel.org
+Description:
+ The value to which the reference magnitude of the channel is
+ compared. If the axis is not specified, it applies to all channels
+ of this type.
+
What: /sys/.../events/in_steps_change_en
KernelVersion: 4.0
Contact: linux-iio@vger.kernel.org
@@ -1252,6 +1443,10 @@ Description:
Actually start the buffer capture up. Will start trigger
if first device and appropriate.
+ Note that it might be impossible to configure other attributes,
+ (e.g.: events, scale, sampling rate) if they impact the currently
+ active buffer capture session.
+
What: /sys/bus/iio/devices/iio:deviceX/bufferY
KernelVersion: 5.11
Contact: linux-iio@vger.kernel.org
@@ -1265,6 +1460,12 @@ Description:
What: /sys/.../iio:deviceX/bufferY/in_accel_x_en
What: /sys/.../iio:deviceX/bufferY/in_accel_y_en
What: /sys/.../iio:deviceX/bufferY/in_accel_z_en
+What: /sys/.../iio:deviceX/bufferY/in_deltaangl_x_en
+What: /sys/.../iio:deviceX/bufferY/in_deltaangl_y_en
+What: /sys/.../iio:deviceX/bufferY/in_deltaangl_z_en
+What: /sys/.../iio:deviceX/bufferY/in_deltavelocity_x_en
+What: /sys/.../iio:deviceX/bufferY/in_deltavelocity_y_en
+What: /sys/.../iio:deviceX/bufferY/in_deltavelocity_z_en
What: /sys/.../iio:deviceX/bufferY/in_anglvel_x_en
What: /sys/.../iio:deviceX/bufferY/in_anglvel_y_en
What: /sys/.../iio:deviceX/bufferY/in_anglvel_z_en
@@ -1279,10 +1480,6 @@ What: /sys/.../iio:deviceX/bufferY/in_timestamp_en
What: /sys/.../iio:deviceX/bufferY/in_voltageY_supply_en
What: /sys/.../iio:deviceX/bufferY/in_voltageY_en
What: /sys/.../iio:deviceX/bufferY/in_voltageY-voltageZ_en
-What: /sys/.../iio:deviceX/bufferY/in_voltageY_i_en
-What: /sys/.../iio:deviceX/bufferY/in_voltageY_q_en
-What: /sys/.../iio:deviceX/bufferY/in_voltage_i_en
-What: /sys/.../iio:deviceX/bufferY/in_voltage_q_en
What: /sys/.../iio:deviceX/bufferY/in_incli_x_en
What: /sys/.../iio:deviceX/bufferY/in_incli_y_en
What: /sys/.../iio:deviceX/bufferY/in_pressureY_en
@@ -1295,16 +1492,14 @@ Description:
Scan element control for triggered data capture.
What: /sys/.../iio:deviceX/bufferY/in_accel_type
+What: /sys/.../iio:deviceX/bufferY/in_deltaangl_type
+What: /sys/.../iio:deviceX/bufferY/in_deltavelocity_type
What: /sys/.../iio:deviceX/bufferY/in_anglvel_type
What: /sys/.../iio:deviceX/bufferY/in_magn_type
What: /sys/.../iio:deviceX/bufferY/in_incli_type
What: /sys/.../iio:deviceX/bufferY/in_voltageY_type
What: /sys/.../iio:deviceX/bufferY/in_voltage_type
What: /sys/.../iio:deviceX/bufferY/in_voltageY_supply_type
-What: /sys/.../iio:deviceX/bufferY/in_voltageY_i_type
-What: /sys/.../iio:deviceX/bufferY/in_voltageY_q_type
-What: /sys/.../iio:deviceX/bufferY/in_voltage_i_type
-What: /sys/.../iio:deviceX/bufferY/in_voltage_q_type
What: /sys/.../iio:deviceX/bufferY/in_timestamp_type
What: /sys/.../iio:deviceX/bufferY/in_pressureY_type
What: /sys/.../iio:deviceX/bufferY/in_pressure_type
@@ -1342,13 +1537,15 @@ Description:
What: /sys/.../iio:deviceX/bufferY/in_voltageY_index
What: /sys/.../iio:deviceX/bufferY/in_voltageY_supply_index
-What: /sys/.../iio:deviceX/bufferY/in_voltageY_i_index
-What: /sys/.../iio:deviceX/bufferY/in_voltageY_q_index
-What: /sys/.../iio:deviceX/bufferY/in_voltage_i_index
-What: /sys/.../iio:deviceX/bufferY/in_voltage_q_index
What: /sys/.../iio:deviceX/bufferY/in_accel_x_index
What: /sys/.../iio:deviceX/bufferY/in_accel_y_index
What: /sys/.../iio:deviceX/bufferY/in_accel_z_index
+What: /sys/.../iio:deviceX/bufferY/in_deltaangl_x_index
+What: /sys/.../iio:deviceX/bufferY/in_deltaangl_y_index
+What: /sys/.../iio:deviceX/bufferY/in_deltaangl_z_index
+What: /sys/.../iio:deviceX/bufferY/in_deltavelocity_x_index
+What: /sys/.../iio:deviceX/bufferY/in_deltavelocity_y_index
+What: /sys/.../iio:deviceX/bufferY/in_deltavelocity_z_index
What: /sys/.../iio:deviceX/bufferY/in_anglvel_x_index
What: /sys/.../iio:deviceX/bufferY/in_anglvel_y_index
What: /sys/.../iio:deviceX/bufferY/in_anglvel_z_index
@@ -1394,7 +1591,7 @@ Description:
This attribute is used to read the amount of quadrature error
present in the device at a given time.
-What: /sys/.../iio:deviceX/in_accelX_power_mode
+What: /sys/.../iio:deviceX/in_accelY_power_mode
KernelVersion: 3.11
Contact: linux-iio@vger.kernel.org
Description:
@@ -1406,6 +1603,9 @@ Description:
What: /sys/.../iio:deviceX/in_energy_input
What: /sys/.../iio:deviceX/in_energy_raw
+What: /sys/.../iio:deviceX/in_energyY_active_raw
+What: /sys/.../iio:deviceX/in_energyY_reactive_raw
+What: /sys/.../iio:deviceX/in_energyY_apparent_raw
KernelVersion: 4.0
Contact: linux-iio@vger.kernel.org
Description:
@@ -1462,7 +1662,13 @@ What: /sys/.../iio:deviceX/in_intensityY_raw
What: /sys/.../iio:deviceX/in_intensityY_ir_raw
What: /sys/.../iio:deviceX/in_intensityY_both_raw
What: /sys/.../iio:deviceX/in_intensityY_uv_raw
+What: /sys/.../iio:deviceX/in_intensityY_uva_raw
+What: /sys/.../iio:deviceX/in_intensityY_uvb_raw
What: /sys/.../iio:deviceX/in_intensityY_duv_raw
+What: /sys/.../iio:deviceX/in_intensity_red_raw
+What: /sys/.../iio:deviceX/in_intensity_green_raw
+What: /sys/.../iio:deviceX/in_intensity_blue_raw
+What: /sys/.../iio:deviceX/in_intensity_clear_raw
KernelVersion: 3.4
Contact: linux-iio@vger.kernel.org
Description:
@@ -1470,8 +1676,9 @@ Description:
that measurements contain visible and infrared light
components or just infrared light, respectively. Modifier
uv indicates that measurements contain ultraviolet light
- components. Modifier duv indicates that measurements
- contain deep ultraviolet light components.
+ components. Modifiers uva, uvb and duv indicate that
+ measurements contain A, B or deep (C) ultraviolet light
+ components respectively.
What: /sys/.../iio:deviceX/in_uvindex_input
KernelVersion: 4.6
@@ -1520,22 +1727,31 @@ Description:
Raw value of rotation from true/magnetic north measured with
or without compensation from tilt sensors.
-What: /sys/bus/iio/devices/iio:deviceX/in_currentX_raw
-What: /sys/bus/iio/devices/iio:deviceX/in_currentX_i_raw
-What: /sys/bus/iio/devices/iio:deviceX/in_currentX_q_raw
-KernelVersion: 3.18
+What: /sys/bus/iio/devices/iio:deviceX/in_currentY_raw
+What: /sys/bus/iio/devices/iio:deviceX/in_currentY_supply_raw
+KernelVersion: 3.17
Contact: linux-iio@vger.kernel.org
Description:
- Raw current measurement from channel X. Units are in milliamps
+ Raw current measurement from channel Y. Units are in milliamps
after application of scale and offset. If no offset or scale is
present, output should be considered as processed with the
- unit in milliamps.
+ unit in milliamps. In special cases where the channel does not
+ correspond to externally available input one of the named
+ versions may be used.
Channels with 'i' and 'q' modifiers always exist in pairs and both
channels refer to the same signal. The 'i' channel contains the in-phase
component of the signal while the 'q' channel contains the quadrature
component.
+What: /sys/bus/iio/devices/iio:deviceX/in_altcurrentY_rms_raw
+KernelVersion: 6.18
+Contact: linux-iio@vger.kernel.org
+Description:
+ Raw (unscaled no bias removal etc.) Root Mean Square (RMS) current
+ measurement from channel Y. Units after application of scale and
+ offset are milliamps.
+
What: /sys/.../iio:deviceX/in_energy_en
What: /sys/.../iio:deviceX/in_distance_en
What: /sys/.../iio:deviceX/in_velocity_sqrt(x^2+y^2+z^2)_en
@@ -1693,9 +1909,9 @@ Description:
hardware fifo watermark level.
What: /sys/bus/iio/devices/iio:deviceX/in_temp_calibemissivity
-What: /sys/bus/iio/devices/iio:deviceX/in_tempX_calibemissivity
+What: /sys/bus/iio/devices/iio:deviceX/in_tempY_calibemissivity
What: /sys/bus/iio/devices/iio:deviceX/in_temp_object_calibemissivity
-What: /sys/bus/iio/devices/iio:deviceX/in_tempX_object_calibemissivity
+What: /sys/bus/iio/devices/iio:deviceX/in_tempY_object_calibemissivity
KernelVersion: 4.1
Contact: linux-iio@vger.kernel.org
Description:
@@ -1716,17 +1932,17 @@ Description:
is considered as one sample for <type>[_name]_sampling_frequency.
What: /sys/bus/iio/devices/iio:deviceX/in_concentration_raw
-What: /sys/bus/iio/devices/iio:deviceX/in_concentrationX_raw
+What: /sys/bus/iio/devices/iio:deviceX/in_concentrationY_raw
What: /sys/bus/iio/devices/iio:deviceX/in_concentration_co2_raw
-What: /sys/bus/iio/devices/iio:deviceX/in_concentrationX_co2_raw
+What: /sys/bus/iio/devices/iio:deviceX/in_concentrationY_co2_raw
What: /sys/bus/iio/devices/iio:deviceX/in_concentration_ethanol_raw
-What: /sys/bus/iio/devices/iio:deviceX/in_concentrationX_ethanol_raw
+What: /sys/bus/iio/devices/iio:deviceX/in_concentrationY_ethanol_raw
What: /sys/bus/iio/devices/iio:deviceX/in_concentration_h2_raw
-What: /sys/bus/iio/devices/iio:deviceX/in_concentrationX_h2_raw
+What: /sys/bus/iio/devices/iio:deviceX/in_concentrationY_h2_raw
What: /sys/bus/iio/devices/iio:deviceX/in_concentration_o2_raw
-What: /sys/bus/iio/devices/iio:deviceX/in_concentrationX_o2_raw
+What: /sys/bus/iio/devices/iio:deviceX/in_concentrationY_o2_raw
What: /sys/bus/iio/devices/iio:deviceX/in_concentration_voc_raw
-What: /sys/bus/iio/devices/iio:deviceX/in_concentrationX_voc_raw
+What: /sys/bus/iio/devices/iio:deviceX/in_concentrationY_voc_raw
KernelVersion: 4.3
Contact: linux-iio@vger.kernel.org
Description:
@@ -1734,14 +1950,14 @@ Description:
after application of scale and offset are percents.
What: /sys/bus/iio/devices/iio:deviceX/in_resistance_raw
-What: /sys/bus/iio/devices/iio:deviceX/in_resistanceX_raw
+What: /sys/bus/iio/devices/iio:deviceX/in_resistanceY_raw
What: /sys/bus/iio/devices/iio:deviceX/out_resistance_raw
-What: /sys/bus/iio/devices/iio:deviceX/out_resistanceX_raw
+What: /sys/bus/iio/devices/iio:deviceX/out_resistanceY_raw
KernelVersion: 4.3
Contact: linux-iio@vger.kernel.org
Description:
- Raw (unscaled no offset etc.) resistance reading that can be processed
- into an ohm value.
+ Raw (unscaled no offset etc.) resistance reading.
+ Units after application of scale and offset are ohms.
What: /sys/bus/iio/devices/iio:deviceX/heater_enable
KernelVersion: 4.1.0
@@ -1827,8 +2043,9 @@ What: /sys/bus/iio/devices/iio:deviceX/in_electricalconductivity_raw
KernelVersion: 4.8
Contact: linux-iio@vger.kernel.org
Description:
- Raw (unscaled no offset etc.) electric conductivity reading that
- can be processed to siemens per meter.
+ Raw (unscaled no offset etc.) electric conductivity reading.
+ Units after application of scale and offset are siemens per
+ meter.
What: /sys/bus/iio/devices/iio:deviceX/in_countY_raw
KernelVersion: 4.10
@@ -1884,8 +2101,8 @@ What: /sys/bus/iio/devices/iio:deviceX/in_phaseY_raw
KernelVersion: 4.18
Contact: linux-iio@vger.kernel.org
Description:
- Raw (unscaled) phase difference reading from channel Y
- that can be processed to radians.
+ Raw (unscaled) phase difference reading from channel Y.
+ Units after application of scale and offset are radians.
What: /sys/bus/iio/devices/iio:deviceX/in_massconcentration_pm1_input
What: /sys/bus/iio/devices/iio:deviceX/in_massconcentrationY_pm1_input
@@ -1924,7 +2141,7 @@ Description:
One of the following thermocouple types: B, E, J, K, N, R, S, T.
What: /sys/bus/iio/devices/iio:deviceX/in_temp_object_calibambient
-What: /sys/bus/iio/devices/iio:deviceX/in_tempX_object_calibambient
+What: /sys/bus/iio/devices/iio:deviceX/in_tempY_object_calibambient
KernelVersion: 5.10
Contact: linux-iio@vger.kernel.org
Description:
@@ -1999,3 +2216,245 @@ Description:
Available range for the forced calibration value, expressed as:
- a range specified as "[min step max]"
+
+What: /sys/bus/iio/devices/iio:deviceX/in_voltageY_sampling_frequency
+What: /sys/bus/iio/devices/iio:deviceX/in_powerY_sampling_frequency
+What: /sys/bus/iio/devices/iio:deviceX/in_currentY_sampling_frequency
+KernelVersion: 5.20
+Contact: linux-iio@vger.kernel.org
+Description:
+ Some devices have separate controls of sampling frequency for
+ individual channels. If multiple channels are enabled in a scan,
+ then the sampling_frequency of the scan may be computed from the
+ per channel sampling frequencies.
+
+What: /sys/.../events/in_accel_gesture_singletap_en
+What: /sys/.../events/in_accel_gesture_doubletap_en
+KernelVersion: 6.1
+Contact: linux-iio@vger.kernel.org
+Description:
+ Device generates an event on a single or double tap.
+
+What: /sys/.../events/in_accel_gesture_singletap_value
+What: /sys/.../events/in_accel_gesture_doubletap_value
+KernelVersion: 6.1
+Contact: linux-iio@vger.kernel.org
+Description:
+ Specifies the threshold value that the device is comparing
+ against to generate the tap gesture event. The lower
+ threshold value increases the sensitivity of tap detection.
+ Units and the exact meaning of value are device-specific.
+
+What: /sys/.../events/in_accel_gesture_tap_value_available
+KernelVersion: 6.1
+Contact: linux-iio@vger.kernel.org
+Description:
+ Lists all available threshold values which can be used to
+ modify the sensitivity of the tap detection.
+
+What: /sys/.../events/in_accel_gesture_singletap_reset_timeout
+What: /sys/.../events/in_accel_gesture_doubletap_reset_timeout
+KernelVersion: 6.1
+Contact: linux-iio@vger.kernel.org
+Description:
+ Specifies the timeout value in seconds for the tap detector
+ to not to look for another tap event after the event as
+ occurred. Basically the minimum quiet time between the two
+ single-tap's or two double-tap's.
+
+What: /sys/.../events/in_accel_gesture_tap_reset_timeout_available
+KernelVersion: 6.1
+Contact: linux-iio@vger.kernel.org
+Description:
+ Lists all available tap reset timeout values. Units in seconds.
+
+What: /sys/.../events/in_accel_gesture_doubletap_tap2_min_delay
+KernelVersion: 6.1
+Contact: linux-iio@vger.kernel.org
+Description:
+ Specifies the minimum quiet time in seconds between the two
+ taps of a double tap.
+
+What: /sys/.../events/in_accel_gesture_doubletap_tap2_min_delay_available
+KernelVersion: 6.1
+Contact: linux-iio@vger.kernel.org
+Description:
+ Lists all available delay values between two taps in the double
+ tap. Units in seconds.
+
+What: /sys/.../events/in_accel_gesture_tap_maxtomin_time
+KernelVersion: 6.1
+Contact: linux-iio@vger.kernel.org
+Description:
+ Specifies the maximum time difference allowed between upper
+ and lower peak of tap to consider it as the valid tap event.
+ Units in seconds.
+
+What: /sys/.../events/in_accel_gesture_tap_maxtomin_time_available
+KernelVersion: 6.1
+Contact: linux-iio@vger.kernel.org
+Description:
+ Lists all available time values between upper peak to lower
+ peak. Units in seconds.
+
+What: /sys/bus/iio/devices/iio:deviceX/in_rot_yaw_raw
+What: /sys/bus/iio/devices/iio:deviceX/in_rot_pitch_raw
+What: /sys/bus/iio/devices/iio:deviceX/in_rot_roll_raw
+KernelVersion: 6.1
+Contact: linux-iio@vger.kernel.org
+Description:
+ Raw (unscaled) euler angles readings. Units after
+ application of scale are deg.
+
+What: /sys/bus/iio/devices/iio:deviceX/serialnumber
+KernelVersion: 6.1
+Contact: linux-iio@vger.kernel.org
+Description:
+ An example format is 16-bytes, 2-digits-per-byte, HEX-string
+ representing the sensor unique ID number.
+
+What: /sys/bus/iio/devices/iio:deviceX/filter_type_available
+What: /sys/bus/iio/devices/iio:deviceX/in_voltage-voltage_filter_type_available
+KernelVersion: 6.1
+Contact: linux-iio@vger.kernel.org
+Description:
+ Reading returns a list with the possible filter modes. Options
+ for the attribute:
+
+ * "none" - Filter is disabled/bypassed.
+ * "sinc1" - The digital sinc1 filter. Fast 1st
+ conversion time. Poor noise performance.
+ * "sinc3" - The digital sinc3 filter. Moderate 1st
+ conversion time. Good noise performance.
+ * "sinc3+pf1" - Sinc3 + device specific Post Filter 1.
+ * "sinc3+pf2" - Sinc3 + device specific Post Filter 2.
+ * "sinc3+pf3" - Sinc3 + device specific Post Filter 3.
+ * "sinc3+pf4" - Sinc3 + device specific Post Filter 4.
+ * "sinc3+rej60" - Sinc3 + 60Hz rejection.
+ * "sinc3+sinc1" - Sinc3 + averaging by 8. Low 1st conversion
+ time.
+ * "sinc4" - Sinc 4. Excellent noise performance. Long
+ 1st conversion time.
+ * "sinc4+lp" - Sinc4 + Low Pass Filter.
+ * "sinc4+sinc1" - Sinc4 + averaging by 8. Low 1st conversion
+ time.
+ * "sinc4+rej60" - Sinc4 + 60Hz rejection.
+ * "sinc5" - The digital sinc5 filter. Excellent noise
+ performance
+ * "sinc5+avg" - Sinc5 + averaging by 4.
+ * "sinc5+pf1" - Sinc5 + device specific Post Filter 1.
+ * "sinc5+sinc1" - Sinc5 + Sinc1.
+ * "sinc5+sinc1+pf1" - Sinc5 + Sinc1 + device specific Post Filter 1.
+ * "sinc5+sinc1+pf2" - Sinc5 + Sinc1 + device specific Post Filter 2.
+ * "sinc5+sinc1+pf3" - Sinc5 + Sinc1 + device specific Post Filter 3.
+ * "sinc5+sinc1+pf4" - Sinc5 + Sinc1 + device specific Post Filter 4.
+ * "wideband" - filter with wideband low ripple passband
+ and sharp transition band.
+
+What: /sys/bus/iio/devices/iio:deviceX/filter_type
+What: /sys/bus/iio/devices/iio:deviceX/in_voltageY-voltageZ_filter_type
+KernelVersion: 6.1
+Contact: linux-iio@vger.kernel.org
+Description:
+ Specifies which filter type apply to the channel. The possible
+ values are given by the filter_type_available attribute.
+
+What: /sys/.../events/in_proximity_thresh_either_runningperiod
+KernelVersion: 6.6
+Contact: linux-iio@vger.kernel.org
+Description:
+ A running period of time (in seconds) for which
+ in_proximity_thresh_either_runningcount amount of conditions
+ must occur before an event is generated. If direction is not
+ specified then this period applies to both directions.
+
+What: /sys/.../events/in_proximity_thresh_either_runningcount
+KernelVersion: 6.6
+Contact: linux-iio@vger.kernel.org
+Description:
+ Number of conditions that must occur, during a running
+ period, before an event is generated.
+
+What: /sys/bus/iio/devices/iio:deviceX/in_colortemp_raw
+KernelVersion: 6.7
+Contact: linux-iio@vger.kernel.org
+Description:
+ Represents light color temperature, which measures light color
+ temperature in Kelvin.
+
+What: /sys/bus/iio/devices/iio:deviceX/in_chromaticity_x_raw
+What: /sys/bus/iio/devices/iio:deviceX/in_chromaticity_y_raw
+KernelVersion: 6.7
+Contact: linux-iio@vger.kernel.org
+Description:
+ The x and y light color coordinate on the CIE 1931 chromaticity
+ diagram.
+
+What: /sys/bus/iio/devices/iio:deviceX/events/in_altvoltageY_mag_either_label
+What: /sys/bus/iio/devices/iio:deviceX/events/in_altvoltageY_mag_rising_label
+What: /sys/bus/iio/devices/iio:deviceX/events/in_altvoltageY_thresh_falling_label
+What: /sys/bus/iio/devices/iio:deviceX/events/in_altvoltageY_thresh_rising_label
+What: /sys/bus/iio/devices/iio:deviceX/events/in_anglvelY_mag_rising_label
+What: /sys/bus/iio/devices/iio:deviceX/events/in_anglY_thresh_rising_label
+What: /sys/bus/iio/devices/iio:deviceX/events/in_phaseY_mag_rising_label
+KernelVersion: 6.7
+Contact: linux-iio@vger.kernel.org
+Description:
+ Optional symbolic label to a device channel event.
+ If a label is defined for this event add that to the event
+ specific attributes. This is useful for userspace to be able to
+ better identify an individual event.
+
+What: /sys/.../events/in_accel_gesture_tap_wait_timeout
+KernelVersion: 6.7
+Contact: linux-iio@vger.kernel.org
+Description:
+ Enable tap gesture confirmation with timeout.
+
+What: /sys/.../events/in_accel_gesture_tap_wait_dur
+KernelVersion: 6.7
+Contact: linux-iio@vger.kernel.org
+Description:
+ Timeout value in seconds for tap gesture confirmation.
+
+What: /sys/.../events/in_accel_gesture_tap_wait_dur_available
+KernelVersion: 6.7
+Contact: linux-iio@vger.kernel.org
+Description:
+ List of available timeout value for tap gesture confirmation.
+
+What: /sys/.../iio:deviceX/in_shunt_resistor
+What: /sys/.../iio:deviceX/in_current_shunt_resistor
+What: /sys/.../iio:deviceX/in_power_shunt_resistor
+KernelVersion: 6.10
+Contact: linux-iio@vger.kernel.org
+Description:
+ The value of current sense resistor in Ohms.
+
+What: /sys/.../iio:deviceX/in_attention_input
+KernelVersion: 6.13
+Contact: linux-iio@vger.kernel.org
+Description:
+ Value representing the user's attention to the system expressed
+ in units as percentage. This usually means if the user is
+ looking at the screen or not.
+
+What: /sys/.../events/in_accel_value_available
+KernelVersion: 6.18
+Contact: linux-iio@vger.kernel.org
+Description:
+ List of available threshold values for acceleration event
+ generation. Applies to all event types on in_accel channels.
+ Units after application of scale and offset are m/s^2.
+ Expressed as:
+
+ - a range specified as "[min step max]"
+
+What: /sys/.../events/in_accel_period_available
+KernelVersion: 6.18
+Contact: linux-iio@vger.kernel.org
+Description:
+ List of available periods for accelerometer event detection in
+ seconds, expressed as:
+
+ - a range specified as "[min step max]"
diff --git a/Documentation/ABI/testing/sysfs-bus-iio-ad9739a b/Documentation/ABI/testing/sysfs-bus-iio-ad9739a
new file mode 100644
index 000000000000..ed59299e6f8d
--- /dev/null
+++ b/Documentation/ABI/testing/sysfs-bus-iio-ad9739a
@@ -0,0 +1,19 @@
+What: /sys/bus/iio/devices/iio:deviceX/out_voltageY_operating_mode
+KernelVersion: 6.9
+Contact: linux-iio@vger.kernel.org
+Description:
+ DAC operating mode. One of the following modes can be selected:
+
+ * normal: This is DAC normal mode.
+ * mixed-mode: In this mode the output is effectively chopped at
+ the DAC sample rate. This has the effect of
+ reducing the power of the fundamental signal while
+ increasing the power of the images centered around
+ the DAC sample rate, thus improving the output
+ power of these images.
+
+What: /sys/bus/iio/devices/iio:deviceX/out_voltageY_operating_mode_available
+KernelVersion: 6.9
+Contact: linux-iio@vger.kernel.org
+Description:
+ Available operating modes.
diff --git a/Documentation/ABI/testing/sysfs-bus-iio-adc-ad-sigma-delta b/Documentation/ABI/testing/sysfs-bus-iio-adc-ad-sigma-delta
new file mode 100644
index 000000000000..a5a8a579f4f3
--- /dev/null
+++ b/Documentation/ABI/testing/sysfs-bus-iio-adc-ad-sigma-delta
@@ -0,0 +1,23 @@
+What: /sys/bus/iio/devices/iio:deviceX/in_voltageY_sys_calibration
+KernelVersion: 5.5
+Contact: linux-iio@vger.kernel.org
+Description:
+ This attribute, if available, initiates the system calibration procedure. This is done on a
+ single channel at a time. Write '1' to start the calibration.
+
+What: /sys/bus/iio/devices/iio:deviceX/in_voltageY_sys_calibration_mode_available
+KernelVersion: 5.5
+Contact: linux-iio@vger.kernel.org
+Description:
+ This attribute, if available, returns a list with the possible calibration modes.
+ There are two available options:
+ "zero_scale" - calibrate to zero scale
+ "full_scale" - calibrate to full scale
+
+What: /sys/bus/iio/devices/iio:deviceX/in_voltageY_sys_calibration_mode
+KernelVersion: 5.5
+Contact: linux-iio@vger.kernel.org
+Description:
+ This attribute, if available, sets up the calibration mode used in the system calibration
+ procedure. Reading returns the current calibration mode.
+ Writing sets the system calibration mode.
diff --git a/Documentation/ABI/testing/sysfs-bus-iio-adc-ad4130 b/Documentation/ABI/testing/sysfs-bus-iio-adc-ad4130
new file mode 100644
index 000000000000..d3fad27421d6
--- /dev/null
+++ b/Documentation/ABI/testing/sysfs-bus-iio-adc-ad4130
@@ -0,0 +1,20 @@
+What: /sys/bus/iio/devices/iio:deviceX/in_voltage-voltage_filter_mode_available
+KernelVersion: 6.2
+Contact: linux-iio@vger.kernel.org
+Description:
+ Reading returns a list with the possible filter modes.
+
+ This ABI is only kept for backwards compatibility and the values
+ returned are identical to filter_type_available attribute
+ documented in Documentation/ABI/testing/sysfs-bus-iio. Please,
+ use filter_type_available like ABI to provide filter options for
+ new drivers.
+
+What: /sys/bus/iio/devices/iio:deviceX/in_voltageY-voltageZ_filter_mode
+KernelVersion: 6.2
+Contact: linux-iio@vger.kernel.org
+Description:
+ This ABI is only kept for backwards compatibility and the values
+ returned are identical to in_voltageY-voltageZ_filter_type
+ attribute documented in Documentation/ABI/testing/sysfs-bus-iio.
+ Please, use in_voltageY-voltageZ_filter_type for new drivers.
diff --git a/Documentation/ABI/testing/sysfs-bus-iio-adc-ad7192 b/Documentation/ABI/testing/sysfs-bus-iio-adc-ad7192
index f8315202c8f0..28be1cabf112 100644
--- a/Documentation/ABI/testing/sysfs-bus-iio-adc-ad7192
+++ b/Documentation/ABI/testing/sysfs-bus-iio-adc-ad7192
@@ -19,33 +19,9 @@ Description:
the bridge can be disconnected (when it is not being used
using the bridge_switch_en attribute.
-What: /sys/bus/iio/devices/iio:deviceX/in_voltagex_sys_calibration
-KernelVersion:
-Contact: linux-iio@vger.kernel.org
-Description:
- Initiates the system calibration procedure. This is done on a
- single channel at a time. Write '1' to start the calibration.
-
What: /sys/bus/iio/devices/iio:deviceX/in_voltage2-voltage2_shorted_raw
KernelVersion:
Contact: linux-iio@vger.kernel.org
Description:
Measure voltage from AIN2 pin connected to AIN(+)
and AIN(-) shorted.
-
-What: /sys/bus/iio/devices/iio:deviceX/in_voltagex_sys_calibration_mode_available
-KernelVersion:
-Contact: linux-iio@vger.kernel.org
-Description:
- Reading returns a list with the possible calibration modes.
- There are two available options:
- "zero_scale" - calibrate to zero scale
- "full_scale" - calibrate to full scale
-
-What: /sys/bus/iio/devices/iio:deviceX/in_voltagex_sys_calibration_mode
-KernelVersion:
-Contact: linux-iio@vger.kernel.org
-Description:
- Sets up the calibration mode used in the system calibration
- procedure. Reading returns the current calibration mode.
- Writing sets the system calibration mode.
diff --git a/Documentation/ABI/testing/sysfs-bus-iio-adc-ad7280a b/Documentation/ABI/testing/sysfs-bus-iio-adc-ad7280a
new file mode 100644
index 000000000000..83b7efe6aa07
--- /dev/null
+++ b/Documentation/ABI/testing/sysfs-bus-iio-adc-ad7280a
@@ -0,0 +1,13 @@
+What: /sys/bus/iio/devices/iio:deviceX/in_voltageY-voltageZ_balance_switch_en
+KernelVersion: 5.14
+Contact: linux-iio@vger.kernel.org
+Description:
+ Used to enable an output for balancing cells for time
+ controlled via in_voltage_Y-voltageZ_balance_switch_timer.
+
+What: /sys/bus/iio/devices/iio:deviceX/in_voltageY-voltageZ_balance_switch_timer
+KernelVersion: 5.14
+Contact: linux-iio@vger.kernel.org
+Description:
+ Time in seconds for which balance switch will be turned on.
+ Multiple of 71.5 seconds.
diff --git a/Documentation/ABI/testing/sysfs-bus-iio-adc-max11410 b/Documentation/ABI/testing/sysfs-bus-iio-adc-max11410
new file mode 100644
index 000000000000..2a53c6b37360
--- /dev/null
+++ b/Documentation/ABI/testing/sysfs-bus-iio-adc-max11410
@@ -0,0 +1,13 @@
+What: /sys/bus/iio/devices/iio:deviceX/in_voltage_filterY_notch_en
+Date: September 2022
+KernelVersion: 6.0
+Contact: linux-iio@vger.kernel.org
+Description:
+ Enable or disable a notch filter.
+
+What: /sys/bus/iio/devices/iio:deviceX/in_voltage_filterY_notch_center
+Date: September 2022
+KernelVersion: 6.0
+Contact: linux-iio@vger.kernel.org
+Description:
+ Center frequency of the notch filter in Hz.
diff --git a/Documentation/ABI/testing/sysfs-bus-iio-adc-max9611 b/Documentation/ABI/testing/sysfs-bus-iio-adc-max9611
deleted file mode 100644
index 6d2d2b094941..000000000000
--- a/Documentation/ABI/testing/sysfs-bus-iio-adc-max9611
+++ /dev/null
@@ -1,17 +0,0 @@
-What: /sys/bus/iio/devices/iio:deviceX/in_power_shunt_resistor
-Date: March 2017
-KernelVersion: 4.12
-Contact: linux-iio@vger.kernel.org
-Description: The value of the shunt resistor used to compute power drain on
- common input voltage pin (RS+). In Ohms.
-
-What: /sys/bus/iio/devices/iio:deviceX/in_current_shunt_resistor
-Date: March 2017
-KernelVersion: 4.12
-Contact: linux-iio@vger.kernel.org
-Description: The value of the shunt resistor used to compute current flowing
- between RS+ and RS- voltage sense inputs. In Ohms.
-
-These attributes describe a single physical component, exposed as two distinct
-attributes as it is used to calculate two different values: power load and
-current flowing between RS+ and RS- inputs.
diff --git a/Documentation/ABI/testing/sysfs-bus-iio-adc-mcp3564 b/Documentation/ABI/testing/sysfs-bus-iio-adc-mcp3564
new file mode 100644
index 000000000000..b168aa44b233
--- /dev/null
+++ b/Documentation/ABI/testing/sysfs-bus-iio-adc-mcp3564
@@ -0,0 +1,53 @@
+What: /sys/bus/iio/devices/iio:deviceX/boost_current_gain
+KernelVersion: 6.4
+Contact: linux-iio@vger.kernel.org
+Description:
+ This attribute is used to set the gain of the biasing current
+ circuit of the Delta-Sigma modulator. The different BOOST
+ settings are applied to the entire modulator circuit, including
+ the voltage reference buffers.
+
+What: /sys/bus/iio/devices/iio:deviceX/boost_current_gain_available
+KernelVersion: 6.4
+Contact: linux-iio@vger.kernel.org
+Description:
+ Reading returns a list with the possible gain values for
+ the current biasing circuit of the Delta-Sigma modulator.
+
+What: /sys/bus/iio/devices/iio:deviceX/auto_zeroing_mux_enable
+KernelVersion: 6.4
+Contact: linux-iio@vger.kernel.org
+Description:
+ This attribute is used to enable the analog input multiplexer
+ auto-zeroing algorithm (the input multiplexer and the ADC
+ include an offset cancellation algorithm that cancels the offset
+ contribution of the ADC). When the offset cancellation algorithm
+ is enabled, ADC takes two conversions, one with the differential
+ input as VIN+/VIN-, one with VIN+/VIN- inverted. In this case the
+ conversion time is multiplied by two compared to the default
+ case where the algorithm is disabled. This technique allows the
+ cancellation of the ADC offset error and the achievement of
+ ultra-low offset without any digital calibration. The resulting
+ offset is the residue of the difference between the two
+ conversions, which is on the order of magnitude of the noise
+ floor. This offset is effectively canceled at every conversion,
+ so the residual offset error temperature drift is extremely low.
+ Write '1' to enable it, write '0' to disable it.
+
+What: /sys/bus/iio/devices/iio:deviceX/auto_zeroing_ref_enable
+KernelVersion: 6.4
+Contact: linux-iio@vger.kernel.org
+Description:
+ This attribute is used to enable the chopping algorithm for the
+ internal voltage reference buffer. This setting has no effect
+ when external voltage reference is selected.
+ Internal voltage reference buffer injects a certain quantity of
+ 1/f noise into the system that can be modulated with the
+ incoming input signals and can limit the SNR performance at
+ higher Oversampling Ratio values (over 256). To overcome this
+ limitation, the buffer includes an auto-zeroing algorithm that
+ greatly reduces (cancels out) the 1/f noise and cancels the
+ offset value of the reference buffer. As a result, the SNR of
+ the system is not affected by this 1/f noise component of the
+ reference buffer, even at maximum oversampling ratio values.
+ Write '1' to enable it, write '0' to disable it.
diff --git a/Documentation/ABI/testing/sysfs-bus-iio-adc-pac1934 b/Documentation/ABI/testing/sysfs-bus-iio-adc-pac1934
new file mode 100644
index 000000000000..625b7f867847
--- /dev/null
+++ b/Documentation/ABI/testing/sysfs-bus-iio-adc-pac1934
@@ -0,0 +1,9 @@
+What: /sys/bus/iio/devices/iio:deviceX/in_shunt_resistorY
+KernelVersion: 6.7
+Contact: linux-iio@vger.kernel.org
+Description:
+ The value of the shunt resistor may be known only at runtime
+ and set by a client application. This attribute allows to
+ set its value in micro-ohms. X is the IIO index of the device.
+ Y is the channel number. The value is used to calculate
+ current, power and accumulated energy.
diff --git a/Documentation/ABI/testing/sysfs-bus-iio-bno055 b/Documentation/ABI/testing/sysfs-bus-iio-bno055
new file mode 100644
index 000000000000..f32b1644e986
--- /dev/null
+++ b/Documentation/ABI/testing/sysfs-bus-iio-bno055
@@ -0,0 +1,81 @@
+What: /sys/bus/iio/devices/iio:deviceX/in_accel_raw_range
+KernelVersion: 6.1
+Contact: linux-iio@vger.kernel.org
+Description:
+ Raw (unscaled) range for acceleration readings. Unit after
+ application of scale is m/s^2. Note that this doesn't affects
+ the scale (which should be used when changing the maximum and
+ minimum readable value affects also the reading scaling factor).
+
+What: /sys/bus/iio/devices/iio:deviceX/in_anglvel_raw_range
+KernelVersion: 6.1
+Contact: linux-iio@vger.kernel.org
+Description:
+ Range for angular velocity readings in radians per second. Note
+ that this does not affects the scale (which should be used when
+ changing the maximum and minimum readable value affects also the
+ reading scaling factor).
+
+What: /sys/bus/iio/devices/iio:deviceX/in_accel_raw_range_available
+KernelVersion: 6.1
+Contact: linux-iio@vger.kernel.org
+Description:
+ List of allowed values for in_accel_raw_range attribute
+
+What: /sys/bus/iio/devices/iio:deviceX/in_anglvel_raw_range_available
+KernelVersion: 6.1
+Contact: linux-iio@vger.kernel.org
+Description:
+ List of allowed values for in_anglvel_raw_range attribute
+
+What: /sys/bus/iio/devices/iio:deviceX/in_magn_calibration_fast_enable
+KernelVersion: 6.1
+Contact: linux-iio@vger.kernel.org
+Description:
+ Can be 1 or 0. Enables/disables the "Fast Magnetometer
+ Calibration" HW function.
+
+What: /sys/bus/iio/devices/iio:deviceX/fusion_enable
+KernelVersion: 6.1
+Contact: linux-iio@vger.kernel.org
+Description:
+ Can be 1 or 0. Enables/disables the "sensor fusion" (a.k.a.
+ NDOF) HW function.
+
+What: /sys/bus/iio/devices/iio:deviceX/calibration_data
+KernelVersion: 6.1
+Contact: linux-iio@vger.kernel.org
+Description:
+ Reports the binary calibration data blob for the IMU sensors.
+
+What: /sys/bus/iio/devices/iio:deviceX/in_accel_calibration_auto_status
+KernelVersion: 6.1
+Contact: linux-iio@vger.kernel.org
+Description:
+ Reports the autocalibration status for the accelerometer sensor.
+ Can be 0 (calibration non even enabled) or 1 to 5 where the greater
+ the number, the better the calibration status.
+
+What: /sys/bus/iio/devices/iio:deviceX/in_gyro_calibration_auto_status
+KernelVersion: 6.1
+Contact: linux-iio@vger.kernel.org
+Description:
+ Reports the autocalibration status for the gyroscope sensor.
+ Can be 0 (calibration non even enabled) or 1 to 5 where the greater
+ the number, the better the calibration status.
+
+What: /sys/bus/iio/devices/iio:deviceX/in_magn_calibration_auto_status
+KernelVersion: 6.1
+Contact: linux-iio@vger.kernel.org
+Description:
+ Reports the autocalibration status for the magnetometer sensor.
+ Can be 0 (calibration non even enabled) or 1 to 5 where the greater
+ the number, the better the calibration status.
+
+What: /sys/bus/iio/devices/iio:deviceX/sys_calibration_auto_status
+KernelVersion: 6.1
+Contact: linux-iio@vger.kernel.org
+Description:
+ Reports the status for the IMU overall autocalibration.
+ Can be 0 (calibration non even enabled) or 1 to 5 where the greater
+ the number, the better the calibration status.
diff --git a/Documentation/ABI/testing/sysfs-bus-iio-cdc-ad7746 b/Documentation/ABI/testing/sysfs-bus-iio-cdc-ad7746
new file mode 100644
index 000000000000..02ca8941dce1
--- /dev/null
+++ b/Documentation/ABI/testing/sysfs-bus-iio-cdc-ad7746
@@ -0,0 +1,11 @@
+What: /sys/.../iio:deviceX/in_capacitableY_calibbias_calibration
+What: /sys/.../iio:deviceX/in_capacitableY_calibscale_calibration
+KernelVersion: 6.1
+Contact: linux-iio@vger.kernel.org
+Description:
+ Write 1 to trigger a calibration of the calibbias or
+ calibscale. For calibscale, a full scale capacitance should
+ be connected to the capacitance input and a
+ calibscale_calibration then started. For calibbias see
+ the device datasheet section on "capacitive system offset
+ calibration".
diff --git a/Documentation/ABI/testing/sysfs-bus-iio-chemical-sgp40 b/Documentation/ABI/testing/sysfs-bus-iio-chemical-sgp40
index 469a7c00fad4..a95547e874f1 100644
--- a/Documentation/ABI/testing/sysfs-bus-iio-chemical-sgp40
+++ b/Documentation/ABI/testing/sysfs-bus-iio-chemical-sgp40
@@ -15,17 +15,3 @@ Description:
Set the relative humidity. This value is sent to the sensor for
humidity compensation.
Default value: 50000 (50 % relative humidity)
-
-What: /sys/bus/iio/devices/iio:deviceX/in_resistance_calibbias
-Date: August 2021
-KernelVersion: 5.15
-Contact: Andreas Klinger <ak@it-klinger.de>
-Description:
- Set the bias value for the resistance which is used for
- calculation of in_concentration_input as follows:
-
- x = (in_resistance_raw - in_resistance_calibbias) * 0.65
-
- in_concentration_input = 500 / (1 + e^x)
-
- Default value: 30000
diff --git a/Documentation/ABI/testing/sysfs-bus-iio-cros-ec b/Documentation/ABI/testing/sysfs-bus-iio-cros-ec
index adf24c40126f..9e3926243797 100644
--- a/Documentation/ABI/testing/sysfs-bus-iio-cros-ec
+++ b/Documentation/ABI/testing/sysfs-bus-iio-cros-ec
@@ -7,16 +7,6 @@ Description:
corresponding calibration offsets can be read from `*_calibbias`
entries.
-What: /sys/bus/iio/devices/iio:deviceX/location
-Date: July 2015
-KernelVersion: 4.7
-Contact: linux-iio@vger.kernel.org
-Description:
- This attribute returns a string with the physical location where
- the motion sensor is placed. For example, in a laptop a motion
- sensor can be located on the base or on the lid. Current valid
- values are 'base' and 'lid'.
-
What: /sys/bus/iio/devices/iio:deviceX/id
Date: September 2017
KernelVersion: 4.14
diff --git a/Documentation/ABI/testing/sysfs-bus-iio-dac b/Documentation/ABI/testing/sysfs-bus-iio-dac
new file mode 100644
index 000000000000..810eaac5533c
--- /dev/null
+++ b/Documentation/ABI/testing/sysfs-bus-iio-dac
@@ -0,0 +1,61 @@
+What: /sys/bus/iio/devices/iio:deviceX/out_currentY_toggle_en
+KernelVersion: 5.18
+Contact: linux-iio@vger.kernel.org
+Description:
+ Toggle enable. Write 1 to enable toggle or 0 to disable it. This
+ is useful when one wants to change the DAC output codes. For
+ autonomous toggling, the way it should be done is:
+
+ - disable toggle operation;
+ - change out_currentY_rawN, where N is the integer value of the symbol;
+ - enable toggle operation.
+
+What: /sys/bus/iio/devices/iio:deviceX/out_currentY_rawN
+KernelVersion: 5.18
+Contact: linux-iio@vger.kernel.org
+Description:
+ This attribute has the same meaning as out_currentY_raw. It is
+ specific to toggle enabled channels and refers to the DAC output
+ code in INPUT_N (_rawN), where N is the integer value of the symbol.
+ The same scale and offset as in out_currentY_raw applies.
+
+What: /sys/bus/iio/devices/iio:deviceX/out_currentY_symbol
+KernelVersion: 5.18
+Contact: linux-iio@vger.kernel.org
+Description:
+ Performs a SW switch to a predefined output symbol. This attribute
+ is specific to toggle enabled channels and allows switching between
+ multiple predefined symbols. Each symbol corresponds to a different
+ output, denoted as out_currentY_rawN, where N is the integer value
+ of the symbol. Writing an integer value N will select out_currentY_rawN.
+
+What: /sys/bus/iio/devices/iio:deviceX/out_voltageY_toggle_en
+KernelVersion: 5.18
+Contact: linux-iio@vger.kernel.org
+Description:
+ Toggle enable. Write 1 to enable toggle or 0 to disable it. This
+ is useful when one wants to change the DAC output codes. For
+ autonomous toggling, the way it should be done is:
+
+ - disable toggle operation;
+ - change out_voltageY_rawN, where N is the integer value of the symbol;
+ - enable toggle operation.
+
+What: /sys/bus/iio/devices/iio:deviceX/out_voltageY_rawN
+KernelVersion: 5.18
+Contact: linux-iio@vger.kernel.org
+Description:
+ This attribute has the same meaning as out_currentY_raw. It is
+ specific to toggle enabled channels and refers to the DAC output
+ code in INPUT_N (_rawN), where N is the integer value of the symbol.
+ The same scale and offset as in out_currentY_raw applies.
+
+What: /sys/bus/iio/devices/iio:deviceX/out_voltageY_symbol
+KernelVersion: 5.18
+Contact: linux-iio@vger.kernel.org
+Description:
+ Performs a SW switch to a predefined output symbol. This attribute
+ is specific to toggle enabled channels and allows switching between
+ multiple predefined symbols. Each symbol corresponds to a different
+ output, denoted as out_voltageY_rawN, where N is the integer value
+ of the symbol. Writing an integer value N will select out_voltageY_rawN.
diff --git a/Documentation/ABI/testing/sysfs-bus-iio-dac-ltc2688 b/Documentation/ABI/testing/sysfs-bus-iio-dac-ltc2688
new file mode 100644
index 000000000000..ae95a5477382
--- /dev/null
+++ b/Documentation/ABI/testing/sysfs-bus-iio-dac-ltc2688
@@ -0,0 +1,55 @@
+What: /sys/bus/iio/devices/iio:deviceX/out_voltageY_dither_en
+KernelVersion: 5.18
+Contact: linux-iio@vger.kernel.org
+Description:
+ Dither enable. Write 1 to enable dither or 0 to disable it. This is useful
+ for changing the dither parameters. They way it should be done is:
+
+ - disable dither operation;
+ - change dither parameters (eg: frequency, phase...);
+ - enabled dither operation
+
+What: /sys/bus/iio/devices/iio:deviceX/out_voltageY_dither_raw
+KernelVersion: 5.18
+Contact: linux-iio@vger.kernel.org
+Description:
+ This raw, unscaled value refers to the dither signal amplitude.
+ The same scale as in out_voltageY_raw applies. However, the
+ offset might be different as it's always 0 for this attribute.
+
+What: /sys/bus/iio/devices/iio:deviceX/out_voltageY_dither_raw_available
+KernelVersion: 5.18
+Contact: linux-iio@vger.kernel.org
+Description:
+ Available range for dither raw amplitude values.
+
+What: /sys/bus/iio/devices/iio:deviceX/out_voltageY_dither_offset
+KernelVersion: 5.18
+Contact: linux-iio@vger.kernel.org
+Description:
+ Offset applied to out_voltageY_dither_raw. Read only attribute
+ always set to 0.
+
+What: /sys/bus/iio/devices/iio:deviceX/out_voltageY_dither_frequency
+KernelVersion: 5.18
+Contact: linux-iio@vger.kernel.org
+Description:
+ Sets the dither signal frequency. Units are in Hz.
+
+What: /sys/bus/iio/devices/iio:deviceX/out_voltageY_dither_frequency_available
+KernelVersion: 5.18
+Contact: linux-iio@vger.kernel.org
+Description:
+ Returns the available values for the dither frequency.
+
+What: /sys/bus/iio/devices/iio:deviceX/out_voltageY_dither_phase
+KernelVersion: 5.18
+Contact: linux-iio@vger.kernel.org
+Description:
+ Sets the dither signal phase. Units are in Radians.
+
+What: /sys/bus/iio/devices/iio:deviceX/out_voltageY_dither_phase_available
+KernelVersion: 5.18
+Contact: linux-iio@vger.kernel.org
+Description:
+ Returns the available values for the dither phase.
diff --git a/Documentation/ABI/testing/sysfs-bus-iio-filter-admv8818 b/Documentation/ABI/testing/sysfs-bus-iio-filter-admv8818
index f6c035752639..c431f0a13cf5 100644
--- a/Documentation/ABI/testing/sysfs-bus-iio-filter-admv8818
+++ b/Documentation/ABI/testing/sysfs-bus-iio-filter-admv8818
@@ -3,10 +3,12 @@ KernelVersion:
Contact: linux-iio@vger.kernel.org
Description:
Reading this returns the valid values that can be written to the
- on_altvoltage0_mode attribute:
+ filter_mode attribute:
- auto -> Adjust bandpass filter to track changes in input clock rate.
- manual -> disable/unregister the clock rate notifier / input clock tracking.
+ - bypass -> bypass low pass filter, high pass filter and disable/unregister
+ the clock rate notifier
What: /sys/bus/iio/devices/iio:deviceX/filter_mode
KernelVersion:
diff --git a/Documentation/ABI/testing/sysfs-bus-iio-frequency-admv1013 b/Documentation/ABI/testing/sysfs-bus-iio-frequency-admv1013
index de1e323e5d47..9cf8cd0dd2df 100644
--- a/Documentation/ABI/testing/sysfs-bus-iio-frequency-admv1013
+++ b/Documentation/ABI/testing/sysfs-bus-iio-frequency-admv1013
@@ -1,10 +1,10 @@
-What: /sys/bus/iio/devices/iio:deviceX/in_altvoltage0-1_i_calibphase
+What: /sys/bus/iio/devices/iio:deviceX/in_altvoltage0-altvoltage1_i_calibphase
KernelVersion:
Contact: linux-iio@vger.kernel.org
Description:
Read/write unscaled value for the Local Oscillatior path quadrature I phase shift.
-What: /sys/bus/iio/devices/iio:deviceX/in_altvoltage0-1_q_calibphase
+What: /sys/bus/iio/devices/iio:deviceX/in_altvoltage0-altvoltage1_q_calibphase
KernelVersion:
Contact: linux-iio@vger.kernel.org
Description:
diff --git a/Documentation/ABI/testing/sysfs-bus-iio-frequency-admv1014 b/Documentation/ABI/testing/sysfs-bus-iio-frequency-admv1014
new file mode 100644
index 000000000000..395010a0ef8b
--- /dev/null
+++ b/Documentation/ABI/testing/sysfs-bus-iio-frequency-admv1014
@@ -0,0 +1,23 @@
+What: /sys/bus/iio/devices/iio:deviceX/in_altvoltage0_i_calibscale_coarse
+KernelVersion: 5.18
+Contact: linux-iio@vger.kernel.org
+Description:
+ Read/write value for the digital attenuator gain (IF_I) with coarse steps.
+
+What: /sys/bus/iio/devices/iio:deviceX/in_altvoltage0_q_calibscale_coarse
+KernelVersion: 5.18
+Contact: linux-iio@vger.kernel.org
+Description:
+ Read/write value for the digital attenuator gain (IF_Q) with coarse steps.
+
+What: /sys/bus/iio/devices/iio:deviceX/in_altvoltage0_i_calibscale_fine
+KernelVersion: 5.18
+Contact: linux-iio@vger.kernel.org
+Description:
+ Read/write value for the digital attenuator gain (IF_I) with fine steps.
+
+What: /sys/bus/iio/devices/iio:deviceX/in_altvoltage0_q_calibscale_fine
+KernelVersion: 5.18
+Contact: linux-iio@vger.kernel.org
+Description:
+ Read/write value for the digital attenuator gain (IF_Q) with fine steps.
diff --git a/Documentation/ABI/testing/sysfs-bus-iio-ina2xx-adc b/Documentation/ABI/testing/sysfs-bus-iio-ina2xx-adc
index 8916f7ec6507..8dbca113112d 100644
--- a/Documentation/ABI/testing/sysfs-bus-iio-ina2xx-adc
+++ b/Documentation/ABI/testing/sysfs-bus-iio-ina2xx-adc
@@ -13,12 +13,3 @@ Description:
available for reading data. However, samples can be occasionally skipped
or repeated, depending on the beat between the capture and conversion
rates.
-
-What: /sys/bus/iio/devices/iio:deviceX/in_shunt_resistor
-Date: December 2015
-KernelVersion: 4.4
-Contact: linux-iio@vger.kernel.org
-Description:
- The value of the shunt resistor may be known only at runtime fom an
- eeprom content read by a client application. This attribute allows to
- set its value in ohms.
diff --git a/Documentation/ABI/testing/sysfs-bus-iio-inv_icm42600 b/Documentation/ABI/testing/sysfs-bus-iio-inv_icm42600
new file mode 100644
index 000000000000..7eeacfb7650d
--- /dev/null
+++ b/Documentation/ABI/testing/sysfs-bus-iio-inv_icm42600
@@ -0,0 +1,18 @@
+What: /sys/bus/iio/devices/iio:deviceX/in_accel_power_mode
+KernelVersion: 6.11
+Contact: linux-iio@vger.kernel.org
+Description:
+ Accelerometer power mode. Setting this attribute will set the
+ requested power mode to use if the ODR support it. If ODR
+ support only 1 mode, power mode will be enforced.
+ Reading this attribute will return the current accelerometer
+ power mode if the sensor is on, or the requested value if the
+ sensor is off. The value between real and requested value can
+ be different for ODR supporting only 1 mode.
+
+What: /sys/bus/iio/devices/iio:deviceX/in_accel_power_mode_available
+KernelVersion: 6.11
+Contact: linux-iio@vger.kernel.org
+Description:
+ List of available accelerometer power modes that can be set in
+ in_accel_power_mode attribute.
diff --git a/Documentation/ABI/testing/sysfs-bus-iio-proximity b/Documentation/ABI/testing/sysfs-bus-iio-proximity
index 3aac6dab8775..9b9d1cc9b703 100644
--- a/Documentation/ABI/testing/sysfs-bus-iio-proximity
+++ b/Documentation/ABI/testing/sysfs-bus-iio-proximity
@@ -18,7 +18,7 @@ Description:
on the signal from which time of flight measurements are
taken.
The appropriate values to take is dependent on both the
- sensor and it's operating environment:
+ sensor and its operating environment:
* as3935 (0-31 range)
18 = indoors (default)
14 = outdoors
diff --git a/Documentation/ABI/testing/sysfs-bus-iio-resolver-ad2s1210 b/Documentation/ABI/testing/sysfs-bus-iio-resolver-ad2s1210
new file mode 100644
index 000000000000..f92c79342b93
--- /dev/null
+++ b/Documentation/ABI/testing/sysfs-bus-iio-resolver-ad2s1210
@@ -0,0 +1,27 @@
+What: /sys/bus/iio/devices/iio:deviceX/events/in_altvoltage0_mag_rising_reset_max
+KernelVersion: 6.7
+Contact: linux-iio@vger.kernel.org
+Description:
+ Reading returns the current Degradation of Signal Reset Maximum
+ Threshold value in millivolts. Writing sets the value.
+
+What: /sys/bus/iio/devices/iio:deviceX/events/in_altvoltage0_mag_rising_reset_max_available
+KernelVersion: 6.7
+Contact: linux-iio@vger.kernel.org
+Description:
+ Reading returns the allowable voltage range for
+ in_altvoltage0_mag_rising_reset_max.
+
+What: /sys/bus/iio/devices/iio:deviceX/events/in_altvoltage0_mag_rising_reset_min
+KernelVersion: 6.7
+Contact: linux-iio@vger.kernel.org
+Description:
+ Reading returns the current Degradation of Signal Reset Minimum
+ Threshold value in millivolts. Writing sets the value.
+
+What: /sys/bus/iio/devices/iio:deviceX/events/in_altvoltage0_mag_rising_reset_min_available
+KernelVersion: 6.7
+Contact: linux-iio@vger.kernel.org
+Description:
+ Reading returns the allowable voltage range for
+ in_altvoltage0_mag_rising_reset_min.
diff --git a/Documentation/ABI/testing/sysfs-bus-iio-sx9324 b/Documentation/ABI/testing/sysfs-bus-iio-sx9324
new file mode 100644
index 000000000000..a8342770e7cb
--- /dev/null
+++ b/Documentation/ABI/testing/sysfs-bus-iio-sx9324
@@ -0,0 +1,29 @@
+What: /sys/bus/iio/devices/iio:deviceX/in_proximity<id>_setup
+Date: November 2021
+KernelVersion: 5.17
+Contact: Gwendal Grignou <gwendal@chromium.org>
+Description:
+ SX9324 has 3 inputs, CS0, CS1 and CS2. Hardware layout
+ defines if the input is
+
+ + not connected (HZ),
+ + grounded (GD),
+ + connected to an antenna where it can act as a base
+ (DS - data shield), or measured input (MI).
+
+ The sensor rotates measurement across 4 phases
+ (PH0, PH1, PH2, PH3), where the inputs are configured
+ and then measured.
+
+ By default, during the first phase, [PH0], CS0 is measured,
+ while CS1 and CS2 are used as shields.
+ `cat in_proximity0_setup` returns "MI,DS,DS".
+ [PH1], CS1 is measured, CS0 and CS2 are shield:
+ `cat in_proximity1_setup` returns "DS,MI,DS".
+ [PH2], CS2 is measured, CS0 and CS1 are shield:
+ `cat in_proximity1_setup` returns "DS,DS,MI".
+ [PH3], CS1 and CS2 are measured (combo mode):
+ `cat in_proximity1_setup` returns "DS,MI,MI".
+
+ Note, these are the chip default. Hardware layout will most
+ likely dictate different output. The entry is read-only.
diff --git a/Documentation/ABI/testing/sysfs-bus-iio-temperature-max31856 b/Documentation/ABI/testing/sysfs-bus-iio-temperature-max31856
deleted file mode 100644
index e5ef6d8e5da1..000000000000
--- a/Documentation/ABI/testing/sysfs-bus-iio-temperature-max31856
+++ /dev/null
@@ -1,31 +0,0 @@
-What: /sys/bus/iio/devices/iio:deviceX/fault_oc
-KernelVersion: 5.1
-Contact: linux-iio@vger.kernel.org
-Description:
- Open-circuit fault. The detection of open-circuit faults,
- such as those caused by broken thermocouple wires.
- Reading returns either '1' or '0'.
-
- === =======================================================
- '1' An open circuit such as broken thermocouple wires
- has been detected.
- '0' No open circuit or broken thermocouple wires are detected
- === =======================================================
-
-What: /sys/bus/iio/devices/iio:deviceX/fault_ovuv
-KernelVersion: 5.1
-Contact: linux-iio@vger.kernel.org
-Description:
- Overvoltage or Undervoltage Input Fault. The internal circuitry
- is protected from excessive voltages applied to the thermocouple
- cables by integrated MOSFETs at the T+ and T- inputs, and the
- BIAS output. These MOSFETs turn off when the input voltage is
- negative or greater than VDD.
-
- Reading returns either '1' or '0'.
-
- === =======================================================
- '1' The input voltage is negative or greater than VDD.
- '0' The input voltage is positive and less than VDD (normal
- state).
- === =======================================================
diff --git a/Documentation/ABI/testing/sysfs-bus-iio-temperature-max31865 b/Documentation/ABI/testing/sysfs-bus-iio-temperature-max31865
deleted file mode 100644
index 4b072da92218..000000000000
--- a/Documentation/ABI/testing/sysfs-bus-iio-temperature-max31865
+++ /dev/null
@@ -1,20 +0,0 @@
-What: /sys/bus/iio/devices/iio:deviceX/fault_ovuv
-KernelVersion: 5.11
-Contact: linux-iio@vger.kernel.org
-Description:
- Overvoltage or Undervoltage Input fault. The internal circuitry
- is protected from excessive voltages applied to the thermocouple
- cables at FORCE+, FORCE2, RTDIN+ & RTDIN-. This circuitry turn
- off when the input voltage is negative or greater than VDD.
-
- Reading returns '1' if input voltage is negative or greater
- than VDD, otherwise '0'.
-
-What: /sys/bus/iio/devices/iio:deviceX/in_filter_notch_center_frequency
-KernelVersion: 5.11
-Contact: linux-iio@vger.kernel.org
-Description:
- Notch frequency in Hz for a noise rejection filter. Used i.e for
- line noise rejection.
-
- Valid notch filter values are 50 Hz and 60 Hz.
diff --git a/Documentation/ABI/testing/sysfs-bus-iio-thermocouple b/Documentation/ABI/testing/sysfs-bus-iio-thermocouple
new file mode 100644
index 000000000000..01259df297ca
--- /dev/null
+++ b/Documentation/ABI/testing/sysfs-bus-iio-thermocouple
@@ -0,0 +1,18 @@
+What: /sys/bus/iio/devices/iio:deviceX/fault_ovuv
+KernelVersion: 5.1
+Contact: linux-iio@vger.kernel.org
+Description:
+ Overvoltage or Undervoltage Input Fault. The internal circuitry
+ is protected from excessive voltages applied to the thermocouple
+ cables. The device can also detect if such a condition occurs.
+
+ Reading returns '1' if input voltage is negative or greater
+ than VDD, otherwise '0'.
+
+What: /sys/bus/iio/devices/iio:deviceX/fault_oc
+KernelVersion: 5.1
+Contact: linux-iio@vger.kernel.org
+Description:
+ Open-circuit fault. The detection of open-circuit faults,
+ such as those caused by broken thermocouple wires.
+ Reading returns '1' if fault, '0' otherwise.
diff --git a/Documentation/ABI/testing/sysfs-bus-iio-timer-stm32 b/Documentation/ABI/testing/sysfs-bus-iio-timer-stm32
index c4a4497c249a..05074c4a65e2 100644
--- a/Documentation/ABI/testing/sysfs-bus-iio-timer-stm32
+++ b/Documentation/ABI/testing/sysfs-bus-iio-timer-stm32
@@ -90,14 +90,6 @@ Description:
Reading returns the current master modes.
Writing set the master mode
-What: /sys/bus/iio/devices/triggerX/sampling_frequency
-KernelVersion: 4.11
-Contact: benjamin.gaignard@st.com
-Description:
- Reading returns the current sampling frequency.
- Writing an value different of 0 set and start sampling.
- Writing 0 stop sampling.
-
What: /sys/bus/iio/devices/iio:deviceX/in_count0_preset
KernelVersion: 4.12
Contact: benjamin.gaignard@st.com
diff --git a/Documentation/ABI/testing/sysfs-bus-iio-vf610 b/Documentation/ABI/testing/sysfs-bus-iio-vf610
index 308a6756d3bf..491ead804488 100644
--- a/Documentation/ABI/testing/sysfs-bus-iio-vf610
+++ b/Documentation/ABI/testing/sysfs-bus-iio-vf610
@@ -1,4 +1,4 @@
-What: /sys/bus/iio/devices/iio:deviceX/conversion_mode
+What: /sys/bus/iio/devices/iio:deviceX/in_conversion_mode
KernelVersion: 4.2
Contact: linux-iio@vger.kernel.org
Description:
diff --git a/Documentation/ABI/testing/sysfs-bus-nfit b/Documentation/ABI/testing/sysfs-bus-nfit
index e7282d184a74..ed483a11c58c 100644
--- a/Documentation/ABI/testing/sysfs-bus-nfit
+++ b/Documentation/ABI/testing/sysfs-bus-nfit
@@ -121,7 +121,7 @@ KernelVersion: v4.7
Contact: nvdimm@lists.linux.dev
Description:
(RO) ACPI specification 6.2 section 5.2.25.9, defines an
- identifier for an NVDIMM, which refelects the id attribute.
+ identifier for an NVDIMM, which reflects the id attribute.
What: /sys/bus/nd/devices/nmemX/nfit/subsystem_vendor
diff --git a/Documentation/ABI/testing/sysfs-bus-nvdimm b/Documentation/ABI/testing/sysfs-bus-nvdimm
index bff84a16812a..64eb8f4c6a41 100644
--- a/Documentation/ABI/testing/sysfs-bus-nvdimm
+++ b/Documentation/ABI/testing/sysfs-bus-nvdimm
@@ -6,3 +6,54 @@ Description:
The libnvdimm sub-system implements a common sysfs interface for
platform nvdimm resources. See Documentation/driver-api/nvdimm/.
+
+What: /sys/bus/event_source/devices/nmemX/format
+Date: February 2022
+KernelVersion: 5.18
+Contact: Kajol Jain <kjain@linux.ibm.com>
+Description: (RO) Attribute group to describe the magic bits
+ that go into perf_event_attr.config for a particular pmu.
+ (See ABI/testing/sysfs-bus-event_source-devices-format).
+
+ Each attribute under this group defines a bit range of the
+ perf_event_attr.config. Supported attribute is listed
+ below::
+
+ event = "config:0-4" - event ID
+
+ For example::
+
+ ctl_res_cnt = "event=0x1"
+
+What: /sys/bus/event_source/devices/nmemX/events
+Date: February 2022
+KernelVersion: 5.18
+Contact: Kajol Jain <kjain@linux.ibm.com>
+Description: (RO) Attribute group to describe performance monitoring events
+ for the nvdimm memory device. Each attribute in this group
+ describes a single performance monitoring event supported by
+ this nvdimm pmu. The name of the file is the name of the event.
+ (See ABI/testing/sysfs-bus-event_source-devices-events). A
+ listing of the events supported by a given nvdimm provider type
+ can be found in Documentation/driver-api/nvdimm/$provider.
+
+What: /sys/bus/event_source/devices/nmemX/cpumask
+Date: February 2022
+KernelVersion: 5.18
+Contact: Kajol Jain <kjain@linux.ibm.com>
+Description: (RO) This sysfs file exposes the cpumask which is designated to
+ to retrieve nvdimm pmu event counter data.
+
+What: /sys/bus/nd/devices/nmemX/cxl/id
+Date: November 2022
+KernelVersion: 6.2
+Contact: Dave Jiang <dave.jiang@intel.com>
+Description: (RO) Show the id (serial) of the device. This is CXL specific.
+
+What: /sys/bus/nd/devices/nmemX/cxl/provider
+Date: November 2022
+KernelVersion: 6.2
+Contact: Dave Jiang <dave.jiang@intel.com>
+Description: (RO) Shows the CXL bridge device that ties to a CXL memory device
+ to this NVDIMM device. I.e. the parent of the device returned is
+ a /sys/bus/cxl/devices/memX instance.
diff --git a/Documentation/ABI/testing/sysfs-bus-optee-devices b/Documentation/ABI/testing/sysfs-bus-optee-devices
index 0f58701367b6..af31e5a22d89 100644
--- a/Documentation/ABI/testing/sysfs-bus-optee-devices
+++ b/Documentation/ABI/testing/sysfs-bus-optee-devices
@@ -6,3 +6,12 @@ Description:
OP-TEE bus provides reference to registered drivers under this directory. The <uuid>
matches Trusted Application (TA) driver and corresponding TA in secure OS. Drivers
are free to create needed API under optee-ta-<uuid> directory.
+
+What: /sys/bus/tee/devices/optee-ta-<uuid>/need_supplicant
+Date: November 2023
+KernelVersion: 6.7
+Contact: op-tee@lists.trustedfirmware.org
+Description:
+ Allows to distinguish whether an OP-TEE based TA/device requires user-space
+ tee-supplicant to function properly or not. This attribute will be present for
+ devices which depend on tee-supplicant to be running.
diff --git a/Documentation/ABI/testing/sysfs-bus-papr-pmem b/Documentation/ABI/testing/sysfs-bus-papr-pmem
index 95254cec92bf..34ee8c59ab25 100644
--- a/Documentation/ABI/testing/sysfs-bus-papr-pmem
+++ b/Documentation/ABI/testing/sysfs-bus-papr-pmem
@@ -8,7 +8,7 @@ Description:
more bits set in the dimm-health-bitmap retrieved in
response to H_SCM_HEALTH hcall. The details of the bit
flags returned in response to this hcall is available
- at 'Documentation/powerpc/papr_hcalls.rst' . Below are
+ at 'Documentation/arch/powerpc/papr_hcalls.rst' . Below are
the flags reported in this sysfs file:
* "not_armed"
@@ -30,7 +30,7 @@ Description:
Indicating that contents of the
NVDIMM have been scrubbed.
* "locked"
- Indicating that NVDIMM contents cant
+ Indicating that NVDIMM contents can't
be modified until next power cycle.
What: /sys/bus/nd/devices/nmemX/papr/perf_stats
@@ -61,3 +61,15 @@ Description:
* "CchRHCnt" : Cache Read Hit Count
* "CchWHCnt" : Cache Write Hit Count
* "FastWCnt" : Fast Write Count
+
+What: /sys/bus/nd/devices/nmemX/papr/health_bitmap_inject
+Date: Jan, 2022
+KernelVersion: v5.17
+Contact: linuxppc-dev <linuxppc-dev@lists.ozlabs.org>, nvdimm@lists.linux.dev,
+Description:
+ (RO) Reports the health bitmap inject bitmap that is applied to
+ bitmap received from PowerVM via the H_SCM_HEALTH. This is used
+ to forcibly set specific bits returned from Hcall. These is then
+ used to simulate various health or shutdown states for an nvdimm
+ and are set by user-space tools like ndctl by issuing a PAPR DSM.
+
diff --git a/Documentation/ABI/testing/sysfs-bus-pci b/Documentation/ABI/testing/sysfs-bus-pci
index 6fc2c2efe8ab..b767db2c52cb 100644
--- a/Documentation/ABI/testing/sysfs-bus-pci
+++ b/Documentation/ABI/testing/sysfs-bus-pci
@@ -163,6 +163,17 @@ Description:
will be present in sysfs. Writing 1 to this file
will perform reset.
+What: /sys/bus/pci/devices/.../reset_subordinate
+Date: October 2024
+Contact: linux-pci@vger.kernel.org
+Description:
+ This is visible only for bridge devices. If you want to reset
+ all devices attached through the subordinate bus of a specific
+ bridge device, writing 1 to this will try to do it. This will
+ affect all devices attached to the system through this bridge
+ similiar to writing 1 to their individual "reset" file, so use
+ with caution.
+
What: /sys/bus/pci/devices/.../vpd
Date: February 2008
Contact: Ben Hutchings <bwh@kernel.org>
@@ -407,6 +418,16 @@ Description:
file contains a '1' if the memory has been published for
use outside the driver that owns the device.
+What: /sys/bus/pci/devices/.../p2pmem/allocate
+Date: August 2022
+Contact: Logan Gunthorpe <logang@deltatee.com>
+Description:
+ This file allows mapping p2pmem into userspace. For each
+ mmap() call on this file, the kernel will allocate a chunk
+ of Peer-to-Peer memory for use in Peer-to-Peer transactions.
+ This memory can be used in O_DIRECT calls to NVMe backed
+ files for Peer-to-Peer copies.
+
What: /sys/bus/pci/devices/.../link/clkpm
/sys/bus/pci/devices/.../link/l0s_aspm
/sys/bus/pci/devices/.../link/l1_aspm
@@ -457,3 +478,227 @@ Description:
The file is writable if the PF is bound to a driver that
implements ->sriov_set_msix_vec_count().
+
+What: /sys/bus/pci/devices/.../resourceN_resize
+Date: September 2022
+Contact: Alex Williamson <alex.williamson@redhat.com>
+Description:
+ These files provide an interface to PCIe Resizable BAR support.
+ A file is created for each BAR resource (N) supported by the
+ PCIe Resizable BAR extended capability of the device. Reading
+ each file exposes the bitmap of available resource sizes:
+
+ # cat resource1_resize
+ 00000000000001c0
+
+ The bitmap represents supported resource sizes for the BAR,
+ where bit0 = 1MB, bit1 = 2MB, bit2 = 4MB, etc. In the above
+ example the device supports 64MB, 128MB, and 256MB BAR sizes.
+
+ When writing the file, the user provides the bit position of
+ the desired resource size, for example:
+
+ # echo 7 > resource1_resize
+
+ This indicates to set the size value corresponding to bit 7,
+ 128MB. The resulting size is 2 ^ (bit# + 20). This definition
+ matches the PCIe specification of this capability.
+
+ In order to make use of resource resizing, all PCI drivers must
+ be unbound from the device and peer devices under the same
+ parent bridge may need to be soft removed. In the case of
+ VGA devices, writing a resize value will remove low level
+ console drivers from the device. Raw users of pci-sysfs
+ resourceN attributes must be terminated prior to resizing.
+ Success of the resizing operation is not guaranteed.
+
+What: /sys/bus/pci/devices/.../leds/*:enclosure:*/brightness
+What: /sys/class/leds/*:enclosure:*/brightness
+Date: August 2024
+KernelVersion: 6.12
+Description:
+ LED indications on PCIe storage enclosures which are controlled
+ through the NPEM interface (Native PCIe Enclosure Management,
+ PCIe r6.1 sec 6.28) are accessible as led class devices, both
+ below /sys/class/leds and below NPEM-capable PCI devices.
+
+ Although these led class devices could be manipulated manually,
+ in practice they are typically manipulated automatically by an
+ application such as ledmon(8).
+
+ The name of a led class device is as follows:
+ <bdf>:enclosure:<indication>
+ where:
+
+ - <bdf> is the domain, bus, device and function number
+ (e.g. 10000:02:05.0)
+ - <indication> is a short description of the LED indication
+
+ Valid indications per PCIe r6.1 table 6-27 are:
+
+ - ok (drive is functioning normally)
+ - locate (drive is being identified by an admin)
+ - fail (drive is not functioning properly)
+ - rebuild (drive is part of an array that is rebuilding)
+ - pfa (drive is predicted to fail soon)
+ - hotspare (drive is marked to be used as a replacement)
+ - ica (drive is part of an array that is degraded)
+ - ifa (drive is part of an array that is failed)
+ - idt (drive is not the right type for the connector)
+ - disabled (drive is disabled, removal is safe)
+ - specific0 to specific7 (enclosure-specific indications)
+
+ Broadly, the indications fall into one of these categories:
+
+ - to signify drive state (ok, locate, fail, idt, disabled)
+ - to signify drive role or state in a software RAID array
+ (rebuild, pfa, hotspare, ica, ifa)
+ - to signify any other role or state (specific0 to specific7)
+
+ Mandatory indications per PCIe r6.1 sec 7.9.19.2 comprise:
+ ok, locate, fail, rebuild. All others are optional.
+ A led class device is only visible if the corresponding
+ indication is supported by the device.
+
+ To manipulate the indications, write 0 (LED_OFF) or 1 (LED_ON)
+ to the "brightness" file. Note that manipulating an indication
+ may implicitly manipulate other indications at the vendor's
+ discretion. E.g. when the user lights up the "ok" indication,
+ the vendor may choose to automatically turn off the "fail"
+ indication. The current state of an indication can be
+ retrieved by reading its "brightness" file.
+
+ The PCIe Base Specification allows vendors leeway to choose
+ different colors or blinking patterns for the indications,
+ but they typically follow the IBPI standard. E.g. the "locate"
+ indication is usually presented as one or two LEDs blinking at
+ 4 Hz frequency:
+ https://en.wikipedia.org/wiki/International_Blinking_Pattern_Interpretation
+
+ PCI Firmware Specification r3.3 sec 4.7 defines a DSM interface
+ to facilitate shared access by operating system and platform
+ firmware to a device's NPEM registers. The kernel will use
+ this DSM interface where available, instead of accessing NPEM
+ registers directly. The DSM interface does not support the
+ enclosure-specific indications "specific0" to "specific7",
+ hence the corresponding led class devices are unavailable if
+ the DSM interface is used.
+
+What: /sys/bus/pci/devices/.../doe_features
+Date: March 2025
+Contact: Linux PCI developers <linux-pci@vger.kernel.org>
+Description:
+ This directory contains a list of the supported Data Object
+ Exchange (DOE) features. The features are the file name.
+ The contents of each file is the raw Vendor ID and data
+ object feature values.
+
+ The value comes from the device and specifies the vendor and
+ data object type supported. The lower (RHS of the colon) is
+ the data object type in hex. The upper (LHS of the colon)
+ is the vendor ID.
+
+ As all DOE devices must support the DOE discovery feature,
+ if DOE is supported you will at least see the doe_discovery
+ file, with this contents:
+
+ # cat doe_features/doe_discovery
+ 0001:00
+
+ If the device supports other features you will see other
+ files as well. For example if CMA/SPDM and secure CMA/SPDM
+ are supported the doe_features directory will look like
+ this:
+
+ # ls doe_features
+ 0001:01 0001:02 doe_discovery
+
+What: /sys/bus/pci/devices/.../serial_number
+Date: December 2025
+Contact: Matthew Wood <thepacketgeek@gmail.com>
+Description:
+ This is visible only for PCI devices that support the serial
+ number extended capability. The file is read only and due to
+ the possible sensitivity of accessible serial numbers, admin
+ only.
+
+What: /sys/bus/pci/devices/.../tsm/
+Contact: linux-coco@lists.linux.dev
+Description:
+ This directory only appears if a physical device function
+ supports authentication (PCIe CMA-SPDM), interface security
+ (PCIe TDISP), and is accepted for secure operation by the
+ platform TSM driver. This attribute directory appears
+ dynamically after the platform TSM driver loads. So, only after
+ the /sys/class/tsm/tsm0 device arrives can tools assume that
+ devices without a tsm/ attribute directory will never have one;
+ before that, the security capabilities of the device relative to
+ the platform TSM are unknown. See
+ Documentation/ABI/testing/sysfs-class-tsm.
+
+What: /sys/bus/pci/devices/.../tsm/connect
+Contact: linux-coco@lists.linux.dev
+Description:
+ (RW) Write the name of a TSM (TEE Security Manager) device from
+ /sys/class/tsm to this file to establish a connection with the
+ device. This typically includes an SPDM (DMTF Security
+ Protocols and Data Models) session over PCIe DOE (Data Object
+ Exchange) and may also include PCIe IDE (Integrity and Data
+ Encryption) establishment. Reads from this attribute return the
+ name of the connected TSM or the empty string if not
+ connected. A TSM device signals its readiness to accept PCI
+ connection via a KOBJ_CHANGE event.
+
+What: /sys/bus/pci/devices/.../tsm/disconnect
+Contact: linux-coco@lists.linux.dev
+Description:
+ (WO) Write the name of the TSM device that was specified
+ to 'connect' to teardown the connection.
+
+What: /sys/bus/pci/devices/.../tsm/dsm
+Contact: linux-coco@lists.linux.dev
+Description: (RO) Return PCI device name of this device's DSM (Device
+ Security Manager). When a device is in the connected state it
+ indicates that the platform TSM (TEE Security Manager) has made
+ a secure-session connection with a device's DSM. A DSM is always
+ physical function 0 and when the device supports TDISP (TEE
+ Device Interface Security Protocol) its managed functions also
+ populate this tsm/dsm attribute. The managed functions of a DSM
+ are SR-IOV (Single Root I/O Virtualization) virtual functions,
+ non-zero functions of a multi-function device, or downstream
+ endpoints depending on whether the DSM is an SR-IOV physical
+ function, function0 of a multi-function device, or an upstream
+ PCIe switch port. This is a "link" TSM attribute, see
+ Documentation/ABI/testing/sysfs-class-tsm.
+
+What: /sys/bus/pci/devices/.../tsm/bound
+Contact: linux-coco@lists.linux.dev
+Description: (RO) Return the device name of the TSM when the device is in a
+ TDISP (TEE Device Interface Security Protocol) operational state
+ (LOCKED, RUN, or ERROR, not UNLOCKED). Bound devices consume
+ platform TSM resources and depend on the device's configuration
+ (e.g. BME (Bus Master Enable) and MSE (Memory Space Enable)
+ among other settings) to remain stable for the duration of the
+ bound state. This attribute is only visible for devices that
+ support TDISP operation, and it is only populated after
+ successful connect and TSM bind. The TSM bind operation is
+ initiated by VFIO/IOMMUFD. This is a "link" TSM attribute, see
+ Documentation/ABI/testing/sysfs-class-tsm.
+
+What: /sys/bus/pci/devices/.../authenticated
+Contact: linux-pci@vger.kernel.org
+Description:
+ When the device's tsm/ directory is present device
+ authentication (PCIe CMA-SPDM) and link encryption (PCIe IDE)
+ are handled by the platform TSM (TEE Security Manager). When the
+ tsm/ directory is not present this attribute reflects only the
+ native CMA-SPDM authentication state with the kernel's
+ certificate store.
+
+ If the attribute is not present, it indicates that
+ authentication is unsupported by the device, or the TSM has no
+ available authentication methods for the device.
+
+ When present and the tsm/ attribute directory is present, the
+ authenticated attribute is an alias for the device 'connect'
+ state. See the 'tsm/connect' attribute for more details.
diff --git a/Documentation/ABI/testing/sysfs-bus-pci-devices-aer b/Documentation/ABI/testing/sysfs-bus-pci-devices-aer
new file mode 100644
index 000000000000..5ed284523956
--- /dev/null
+++ b/Documentation/ABI/testing/sysfs-bus-pci-devices-aer
@@ -0,0 +1,163 @@
+PCIe Device AER statistics
+--------------------------
+
+These attributes show up under all the devices that are AER capable. These
+statistical counters indicate the errors "as seen/reported by the device".
+Note that this may mean that if an endpoint is causing problems, the AER
+counters may increment at its link partner (e.g. root port) because the
+errors may be "seen" / reported by the link partner and not the
+problematic endpoint itself (which may report all counters as 0 as it never
+saw any problems).
+
+What: /sys/bus/pci/devices/<dev>/aer_dev_correctable
+Date: July 2018
+KernelVersion: 4.19.0
+Contact: linux-pci@vger.kernel.org, rajatja@google.com
+Description: List of correctable errors seen and reported by this
+ PCI device using ERR_COR. Note that since multiple errors may
+ be reported using a single ERR_COR message, thus
+ TOTAL_ERR_COR at the end of the file may not match the actual
+ total of all the errors in the file. Sample output::
+
+ localhost /sys/devices/pci0000:00/0000:00:1c.0 # cat aer_dev_correctable
+ Receiver Error 2
+ Bad TLP 0
+ Bad DLLP 0
+ RELAY_NUM Rollover 0
+ Replay Timer Timeout 0
+ Advisory Non-Fatal 0
+ Corrected Internal Error 0
+ Header Log Overflow 0
+ TOTAL_ERR_COR 2
+
+What: /sys/bus/pci/devices/<dev>/aer_dev_fatal
+Date: July 2018
+KernelVersion: 4.19.0
+Contact: linux-pci@vger.kernel.org, rajatja@google.com
+Description: List of uncorrectable fatal errors seen and reported by this
+ PCI device using ERR_FATAL. Note that since multiple errors may
+ be reported using a single ERR_FATAL message, thus
+ TOTAL_ERR_FATAL at the end of the file may not match the actual
+ total of all the errors in the file. Sample output::
+
+ localhost /sys/devices/pci0000:00/0000:00:1c.0 # cat aer_dev_fatal
+ Undefined 0
+ Data Link Protocol 0
+ Surprise Down Error 0
+ Poisoned TLP 0
+ Flow Control Protocol 0
+ Completion Timeout 0
+ Completer Abort 0
+ Unexpected Completion 0
+ Receiver Overflow 0
+ Malformed TLP 0
+ ECRC 0
+ Unsupported Request 0
+ ACS Violation 0
+ Uncorrectable Internal Error 0
+ MC Blocked TLP 0
+ AtomicOp Egress Blocked 0
+ TLP Prefix Blocked Error 0
+ TOTAL_ERR_FATAL 0
+
+What: /sys/bus/pci/devices/<dev>/aer_dev_nonfatal
+Date: July 2018
+KernelVersion: 4.19.0
+Contact: linux-pci@vger.kernel.org, rajatja@google.com
+Description: List of uncorrectable nonfatal errors seen and reported by this
+ PCI device using ERR_NONFATAL. Note that since multiple errors
+ may be reported using a single ERR_FATAL message, thus
+ TOTAL_ERR_NONFATAL at the end of the file may not match the
+ actual total of all the errors in the file. Sample output::
+
+ localhost /sys/devices/pci0000:00/0000:00:1c.0 # cat aer_dev_nonfatal
+ Undefined 0
+ Data Link Protocol 0
+ Surprise Down Error 0
+ Poisoned TLP 0
+ Flow Control Protocol 0
+ Completion Timeout 0
+ Completer Abort 0
+ Unexpected Completion 0
+ Receiver Overflow 0
+ Malformed TLP 0
+ ECRC 0
+ Unsupported Request 0
+ ACS Violation 0
+ Uncorrectable Internal Error 0
+ MC Blocked TLP 0
+ AtomicOp Egress Blocked 0
+ TLP Prefix Blocked Error 0
+ TOTAL_ERR_NONFATAL 0
+
+PCIe Rootport AER statistics
+----------------------------
+
+These attributes show up under only the rootports (or root complex event
+collectors) that are AER capable. These indicate the number of error messages as
+"reported to" the rootport. Please note that the rootports also transmit
+(internally) the ERR_* messages for errors seen by the internal rootport PCI
+device, so these counters include them and are thus cumulative of all the error
+messages on the PCI hierarchy originating at that root port.
+
+What: /sys/bus/pci/devices/<dev>/aer_rootport_total_err_cor
+Date: July 2018
+KernelVersion: 4.19.0
+Contact: linux-pci@vger.kernel.org, rajatja@google.com
+Description: Total number of ERR_COR messages reported to rootport.
+
+What: /sys/bus/pci/devices/<dev>/aer_rootport_total_err_fatal
+Date: July 2018
+KernelVersion: 4.19.0
+Contact: linux-pci@vger.kernel.org, rajatja@google.com
+Description: Total number of ERR_FATAL messages reported to rootport.
+
+What: /sys/bus/pci/devices/<dev>/aer_rootport_total_err_nonfatal
+Date: July 2018
+KernelVersion: 4.19.0
+Contact: linux-pci@vger.kernel.org, rajatja@google.com
+Description: Total number of ERR_NONFATAL messages reported to rootport.
+
+PCIe AER ratelimits
+-------------------
+
+These attributes show up under all the devices that are AER capable.
+They represent configurable ratelimits of logs per error type.
+
+See Documentation/PCI/pcieaer-howto.rst for more info on ratelimits.
+
+What: /sys/bus/pci/devices/<dev>/aer/correctable_ratelimit_interval_ms
+Date: May 2025
+KernelVersion: 6.16.0
+Contact: linux-pci@vger.kernel.org
+Description: Writing 0 disables AER correctable error log ratelimiting.
+ Writing a positive value sets the ratelimit interval in ms.
+ Default is DEFAULT_RATELIMIT_INTERVAL (5000 ms).
+
+What: /sys/bus/pci/devices/<dev>/aer/correctable_ratelimit_burst
+Date: May 2025
+KernelVersion: 6.16.0
+Contact: linux-pci@vger.kernel.org
+Description: Ratelimit burst for correctable error logs. Writing a value
+ changes the number of errors (burst) allowed per interval
+ before ratelimiting. Reading gets the current ratelimit
+ burst. Default is DEFAULT_RATELIMIT_BURST (10).
+
+What: /sys/bus/pci/devices/<dev>/aer/nonfatal_ratelimit_interval_ms
+Date: May 2025
+KernelVersion: 6.16.0
+Contact: linux-pci@vger.kernel.org
+Description: Writing 0 disables AER non-fatal uncorrectable error log
+ ratelimiting. Writing a positive value sets the ratelimit
+ interval in ms. Default is DEFAULT_RATELIMIT_INTERVAL
+ (5000 ms).
+
+What: /sys/bus/pci/devices/<dev>/aer/nonfatal_ratelimit_burst
+Date: May 2025
+KernelVersion: 6.16.0
+Contact: linux-pci@vger.kernel.org
+Description: Ratelimit burst for non-fatal uncorrectable error logs.
+ Writing a value changes the number of errors (burst)
+ allowed per interval before ratelimiting. Reading gets the
+ current ratelimit burst. Default is DEFAULT_RATELIMIT_BURST
+ (10).
diff --git a/Documentation/ABI/testing/sysfs-bus-pci-devices-aer_stats b/Documentation/ABI/testing/sysfs-bus-pci-devices-aer_stats
deleted file mode 100644
index 860db53037a5..000000000000
--- a/Documentation/ABI/testing/sysfs-bus-pci-devices-aer_stats
+++ /dev/null
@@ -1,119 +0,0 @@
-PCIe Device AER statistics
---------------------------
-
-These attributes show up under all the devices that are AER capable. These
-statistical counters indicate the errors "as seen/reported by the device".
-Note that this may mean that if an endpoint is causing problems, the AER
-counters may increment at its link partner (e.g. root port) because the
-errors may be "seen" / reported by the link partner and not the
-problematic endpoint itself (which may report all counters as 0 as it never
-saw any problems).
-
-What: /sys/bus/pci/devices/<dev>/aer_dev_correctable
-Date: July 2018
-KernelVersion: 4.19.0
-Contact: linux-pci@vger.kernel.org, rajatja@google.com
-Description: List of correctable errors seen and reported by this
- PCI device using ERR_COR. Note that since multiple errors may
- be reported using a single ERR_COR message, thus
- TOTAL_ERR_COR at the end of the file may not match the actual
- total of all the errors in the file. Sample output::
-
- localhost /sys/devices/pci0000:00/0000:00:1c.0 # cat aer_dev_correctable
- Receiver Error 2
- Bad TLP 0
- Bad DLLP 0
- RELAY_NUM Rollover 0
- Replay Timer Timeout 0
- Advisory Non-Fatal 0
- Corrected Internal Error 0
- Header Log Overflow 0
- TOTAL_ERR_COR 2
-
-What: /sys/bus/pci/devices/<dev>/aer_dev_fatal
-Date: July 2018
-KernelVersion: 4.19.0
-Contact: linux-pci@vger.kernel.org, rajatja@google.com
-Description: List of uncorrectable fatal errors seen and reported by this
- PCI device using ERR_FATAL. Note that since multiple errors may
- be reported using a single ERR_FATAL message, thus
- TOTAL_ERR_FATAL at the end of the file may not match the actual
- total of all the errors in the file. Sample output::
-
- localhost /sys/devices/pci0000:00/0000:00:1c.0 # cat aer_dev_fatal
- Undefined 0
- Data Link Protocol 0
- Surprise Down Error 0
- Poisoned TLP 0
- Flow Control Protocol 0
- Completion Timeout 0
- Completer Abort 0
- Unexpected Completion 0
- Receiver Overflow 0
- Malformed TLP 0
- ECRC 0
- Unsupported Request 0
- ACS Violation 0
- Uncorrectable Internal Error 0
- MC Blocked TLP 0
- AtomicOp Egress Blocked 0
- TLP Prefix Blocked Error 0
- TOTAL_ERR_FATAL 0
-
-What: /sys/bus/pci/devices/<dev>/aer_dev_nonfatal
-Date: July 2018
-KernelVersion: 4.19.0
-Contact: linux-pci@vger.kernel.org, rajatja@google.com
-Description: List of uncorrectable nonfatal errors seen and reported by this
- PCI device using ERR_NONFATAL. Note that since multiple errors
- may be reported using a single ERR_FATAL message, thus
- TOTAL_ERR_NONFATAL at the end of the file may not match the
- actual total of all the errors in the file. Sample output::
-
- localhost /sys/devices/pci0000:00/0000:00:1c.0 # cat aer_dev_nonfatal
- Undefined 0
- Data Link Protocol 0
- Surprise Down Error 0
- Poisoned TLP 0
- Flow Control Protocol 0
- Completion Timeout 0
- Completer Abort 0
- Unexpected Completion 0
- Receiver Overflow 0
- Malformed TLP 0
- ECRC 0
- Unsupported Request 0
- ACS Violation 0
- Uncorrectable Internal Error 0
- MC Blocked TLP 0
- AtomicOp Egress Blocked 0
- TLP Prefix Blocked Error 0
- TOTAL_ERR_NONFATAL 0
-
-PCIe Rootport AER statistics
-----------------------------
-
-These attributes show up under only the rootports (or root complex event
-collectors) that are AER capable. These indicate the number of error messages as
-"reported to" the rootport. Please note that the rootports also transmit
-(internally) the ERR_* messages for errors seen by the internal rootport PCI
-device, so these counters include them and are thus cumulative of all the error
-messages on the PCI hierarchy originating at that root port.
-
-What: /sys/bus/pci/devices/<dev>/aer_stats/aer_rootport_total_err_cor
-Date: July 2018
-KernelVersion: 4.19.0
-Contact: linux-pci@vger.kernel.org, rajatja@google.com
-Description: Total number of ERR_COR messages reported to rootport.
-
-What: /sys/bus/pci/devices/<dev>/aer_stats/aer_rootport_total_err_fatal
-Date: July 2018
-KernelVersion: 4.19.0
-Contact: linux-pci@vger.kernel.org, rajatja@google.com
-Description: Total number of ERR_FATAL messages reported to rootport.
-
-What: /sys/bus/pci/devices/<dev>/aer_stats/aer_rootport_total_err_nonfatal
-Date: July 2018
-KernelVersion: 4.19.0
-Contact: linux-pci@vger.kernel.org, rajatja@google.com
-Description: Total number of ERR_NONFATAL messages reported to rootport.
diff --git a/Documentation/ABI/testing/sysfs-bus-pci-devices-avs b/Documentation/ABI/testing/sysfs-bus-pci-devices-avs
new file mode 100644
index 000000000000..ebff3fa12055
--- /dev/null
+++ b/Documentation/ABI/testing/sysfs-bus-pci-devices-avs
@@ -0,0 +1,8 @@
+What: /sys/devices/pci0000:00/<dev>/avs/fw_version
+Date: February 2024
+Contact: Cezary Rojewski <cezary.rojewski@intel.com>
+Description:
+ Version of AudioDSP firmware ASoC avs driver is communicating
+ with.
+
+ Format: %d.%d.%d.%d, type:major:minor:build.
diff --git a/Documentation/ABI/testing/sysfs-bus-pci-drivers-xhci_hcd b/Documentation/ABI/testing/sysfs-bus-pci-drivers-xhci_hcd
index 0088aba4caa8..fc82aa4e54b0 100644
--- a/Documentation/ABI/testing/sysfs-bus-pci-drivers-xhci_hcd
+++ b/Documentation/ABI/testing/sysfs-bus-pci-drivers-xhci_hcd
@@ -23,3 +23,65 @@ Description:
Reading this attribute gives the state of the DbC. It
can be one of the following states: disabled, enabled,
initialized, connected, configured and stalled.
+
+What: /sys/bus/pci/drivers/xhci_hcd/.../dbc_idVendor
+Date: March 2023
+Contact: Mathias Nyman <mathias.nyman@linux.intel.com>
+Description:
+ This dbc_idVendor attribute lets us change the idVendor field
+ presented in the USB device descriptor by this xhci debug
+ device.
+ Value can only be changed while debug capability (DbC) is in
+ disabled state to prevent USB device descriptor change while
+ connected to a USB host.
+ The default value is 0x1d6b (Linux Foundation).
+ It can be any 16-bit integer.
+
+What: /sys/bus/pci/drivers/xhci_hcd/.../dbc_idProduct
+Date: March 2023
+Contact: Mathias Nyman <mathias.nyman@linux.intel.com>
+Description:
+ This dbc_idProduct attribute lets us change the idProduct field
+ presented in the USB device descriptor by this xhci debug
+ device.
+ Value can only be changed while debug capability (DbC) is in
+ disabled state to prevent USB device descriptor change while
+ connected to a USB host.
+ The default value is 0x0010. It can be any 16-bit integer.
+
+What: /sys/bus/pci/drivers/xhci_hcd/.../dbc_bcdDevice
+Date: March 2023
+Contact: Mathias Nyman <mathias.nyman@linux.intel.com>
+Description:
+ This dbc_bcdDevice attribute lets us change the bcdDevice field
+ presented in the USB device descriptor by this xhci debug
+ device.
+ Value can only be changed while debug capability (DbC) is in
+ disabled state to prevent USB device descriptor change while
+ connected to a USB host.
+ The default value is 0x0010. (device rev 0.10)
+ It can be any 16-bit integer.
+
+What: /sys/bus/pci/drivers/xhci_hcd/.../dbc_bInterfaceProtocol
+Date: March 2023
+Contact: Mathias Nyman <mathias.nyman@linux.intel.com>
+Description:
+ This attribute lets us change the bInterfaceProtocol field
+ presented in the USB Interface descriptor by the xhci debug
+ device.
+ Value can only be changed while debug capability (DbC) is in
+ disabled state to prevent USB descriptor change while
+ connected to a USB host.
+ The default value is 1 (GNU Remote Debug command).
+ Other permissible value is 0 which is for vendor defined debug
+ target.
+
+What: /sys/bus/pci/drivers/xhci_hcd/.../dbc_poll_interval_ms
+Date: February 2024
+Contact: Mathias Nyman <mathias.nyman@linux.intel.com>
+Description:
+ This attribute adjust the polling interval used to check for
+ DbC events. Unit is milliseconds. Accepted values range from 0
+ up to 5000. The default value is 64 ms.
+ This polling interval is used while DbC is enabled but has no
+ active data transfers.
diff --git a/Documentation/ABI/testing/sysfs-bus-peci b/Documentation/ABI/testing/sysfs-bus-peci
new file mode 100644
index 000000000000..87454ec5d981
--- /dev/null
+++ b/Documentation/ABI/testing/sysfs-bus-peci
@@ -0,0 +1,16 @@
+What: /sys/bus/peci/rescan
+Date: July 2021
+KernelVersion: 5.18
+Contact: Iwona Winiarska <iwona.winiarska@intel.com>
+Description:
+ Writing a non-zero value to this attribute will
+ initiate scan for PECI devices on all PECI controllers
+ in the system.
+
+What: /sys/bus/peci/devices/<controller_id>-<device_addr>/remove
+Date: July 2021
+KernelVersion: 5.18
+Contact: Iwona Winiarska <iwona.winiarska@intel.com>
+Description:
+ Writing a non-zero value to this attribute will
+ remove the PECI device and any of its children.
diff --git a/Documentation/ABI/testing/sysfs-bus-platform-devices-ampere-smpro b/Documentation/ABI/testing/sysfs-bus-platform-devices-ampere-smpro
new file mode 100644
index 000000000000..fead760dcf77
--- /dev/null
+++ b/Documentation/ABI/testing/sysfs-bus-platform-devices-ampere-smpro
@@ -0,0 +1,325 @@
+What: /sys/bus/platform/devices/smpro-errmon.*/error_[core|mem|pcie|other]_[ce|ue]
+KernelVersion: 6.1
+Contact: Quan Nguyen <quan@os.amperecomputing.com>
+Description:
+ (RO) Contains the 48-byte Ampere (Vendor-Specific) Error Record printed
+ in hex format according to the table below:
+
+ +--------+---------------+-------------+------------------------------------------------------------+
+ | Offset | Field | Size (byte) | Description |
+ +--------+---------------+-------------+------------------------------------------------------------+
+ | 00 | Error Type | 1 | See :ref:`the table below <smpro-error-types>` for details |
+ +--------+---------------+-------------+------------------------------------------------------------+
+ | 01 | Subtype | 1 | See :ref:`the table below <smpro-error-types>` for details |
+ +--------+---------------+-------------+------------------------------------------------------------+
+ | 02 | Instance | 2 | See :ref:`the table below <smpro-error-types>` for details |
+ +--------+---------------+-------------+------------------------------------------------------------+
+ | 04 | Error status | 4 | See ARM RAS specification for details |
+ +--------+---------------+-------------+------------------------------------------------------------+
+ | 08 | Error Address | 8 | See ARM RAS specification for details |
+ +--------+---------------+-------------+------------------------------------------------------------+
+ | 16 | Error Misc 0 | 8 | See ARM RAS specification for details |
+ +--------+---------------+-------------+------------------------------------------------------------+
+ | 24 | Error Misc 1 | 8 | See ARM RAS specification for details |
+ +--------+---------------+-------------+------------------------------------------------------------+
+ | 32 | Error Misc 2 | 8 | See ARM RAS specification for details |
+ +--------+---------------+-------------+------------------------------------------------------------+
+ | 40 | Error Misc 3 | 8 | See ARM RAS specification for details |
+ +--------+---------------+-------------+------------------------------------------------------------+
+
+ The table below defines the value of error types, their subtype, subcomponent and instance:
+
+ .. _smpro-error-types:
+
+ +-----------------+------------+----------+----------------+----------------------------------------+
+ | Error Group | Error Type | Sub type | Sub component | Instance |
+ +-----------------+------------+----------+----------------+----------------------------------------+
+ | CPM (core) | 0 | 0 | Snoop-Logic | CPM # |
+ +-----------------+------------+----------+----------------+----------------------------------------+
+ | CPM (core) | 0 | 2 | Armv8 Core 1 | CPM # |
+ +-----------------+------------+----------+----------------+----------------------------------------+
+ | MCU (mem) | 1 | 1 | ERR1 | MCU # \| SLOT << 11 |
+ +-----------------+------------+----------+----------------+----------------------------------------+
+ | MCU (mem) | 1 | 2 | ERR2 | MCU # \| SLOT << 11 |
+ +-----------------+------------+----------+----------------+----------------------------------------+
+ | MCU (mem) | 1 | 3 | ERR3 | MCU # |
+ +-----------------+------------+----------+----------------+----------------------------------------+
+ | MCU (mem) | 1 | 4 | ERR4 | MCU # |
+ +-----------------+------------+----------+----------------+----------------------------------------+
+ | MCU (mem) | 1 | 5 | ERR5 | MCU # |
+ +-----------------+------------+----------+----------------+----------------------------------------+
+ | MCU (mem) | 1 | 6 | ERR6 | MCU # |
+ +-----------------+------------+----------+----------------+----------------------------------------+
+ | MCU (mem) | 1 | 7 | Link Error | MCU # |
+ +-----------------+------------+----------+----------------+----------------------------------------+
+ | Mesh (other) | 2 | 0 | Cross Point | X \| (Y << 5) \| NS <<11 |
+ +-----------------+------------+----------+----------------+----------------------------------------+
+ | Mesh (other) | 2 | 1 | Home Node(IO) | X \| (Y << 5) \| NS <<11 |
+ +-----------------+------------+----------+----------------+----------------------------------------+
+ | Mesh (other) | 2 | 2 | Home Node(Mem) | X \| (Y << 5) \| NS <<11 \| device<<12 |
+ +-----------------+------------+----------+----------------+----------------------------------------+
+ | Mesh (other) | 2 | 4 | CCIX Node | X \| (Y << 5) \| NS <<11 |
+ +-----------------+------------+----------+----------------+----------------------------------------+
+ | 2P Link (other) | 3 | 0 | N/A | Altra 2P Link # |
+ +-----------------+------------+----------+----------------+----------------------------------------+
+ | GIC (other) | 5 | 0 | ERR0 | 0 |
+ +-----------------+------------+----------+----------------+----------------------------------------+
+ | GIC (other) | 5 | 1 | ERR1 | 0 |
+ +-----------------+------------+----------+----------------+----------------------------------------+
+ | GIC (other) | 5 | 2 | ERR2 | 0 |
+ +-----------------+------------+----------+----------------+----------------------------------------+
+ | GIC (other) | 5 | 3 | ERR3 | 0 |
+ +-----------------+------------+----------+----------------+----------------------------------------+
+ | GIC (other) | 5 | 4 | ERR4 | 0 |
+ +-----------------+------------+----------+----------------+----------------------------------------+
+ | GIC (other) | 5 | 5 | ERR5 | 0 |
+ +-----------------+------------+----------+----------------+----------------------------------------+
+ | GIC (other) | 5 | 6 | ERR6 | 0 |
+ +-----------------+------------+----------+----------------+----------------------------------------+
+ | GIC (other) | 5 | 7 | ERR7 | 0 |
+ +-----------------+------------+----------+----------------+----------------------------------------+
+ | GIC (other) | 5 | 8 | ERR8 | 0 |
+ +-----------------+------------+----------+----------------+----------------------------------------+
+ | GIC (other) | 5 | 9 | ERR9 | 0 |
+ +-----------------+------------+----------+----------------+----------------------------------------+
+ | GIC (other) | 5 | 10 | ERR10 | 0 |
+ +-----------------+------------+----------+----------------+----------------------------------------+
+ | GIC (other) | 5 | 11 | ERR11 | 0 |
+ +-----------------+------------+----------+----------------+----------------------------------------+
+ | GIC (other) | 5 | 12 | ERR12 | 0 |
+ +-----------------+------------+----------+----------------+----------------------------------------+
+ | GIC (other) | 5 | 13-21 | ERR13 | RC # + 1 |
+ +-----------------+------------+----------+----------------+----------------------------------------+
+ | SMMU (other) | 6 | TCU | 100 | RC # |
+ +-----------------+------------+----------+----------------+----------------------------------------+
+ | SMMU (other) | 6 | TBU0 | 0 | RC # |
+ +-----------------+------------+----------+----------------+----------------------------------------+
+ | SMMU (other) | 6 | TBU1 | 1 | RC # |
+ +-----------------+------------+----------+----------------+----------------------------------------+
+ | SMMU (other) | 6 | TBU2 | 2 | RC # |
+ +-----------------+------------+----------+----------------+----------------------------------------+
+ | SMMU (other) | 6 | TBU3 | 3 | RC # |
+ +-----------------+------------+----------+----------------+----------------------------------------+
+ | SMMU (other) | 6 | TBU4 | 4 | RC # |
+ +-----------------+------------+----------+----------------+----------------------------------------+
+ | SMMU (other) | 6 | TBU5 | 5 | RC # |
+ +-----------------+------------+----------+----------------+----------------------------------------+
+ | SMMU (other) | 6 | TBU6 | 6 | RC # |
+ +-----------------+------------+----------+----------------+----------------------------------------+
+ | SMMU (other) | 6 | TBU7 | 7 | RC # |
+ +-----------------+------------+----------+----------------+----------------------------------------+
+ | SMMU (other) | 6 | TBU8 | 8 | RC # |
+ +-----------------+------------+----------+----------------+----------------------------------------+
+ | SMMU (other) | 6 | TBU9 | 9 | RC # |
+ +-----------------+------------+----------+----------------+----------------------------------------+
+ | PCIe AER (pcie) | 7 | Root | 0 | RC # |
+ +-----------------+------------+----------+----------------+----------------------------------------+
+ | PCIe AER (pcie) | 7 | Device | 1 | RC # |
+ +-----------------+------------+----------+----------------+----------------------------------------+
+ | PCIe RC (pcie) | 8 | RCA HB | 0 | RC # |
+ +-----------------+------------+----------+----------------+----------------------------------------+
+ | PCIe RC (pcie) | 8 | RCB HB | 1 | RC # |
+ +-----------------+------------+----------+----------------+----------------------------------------+
+ | PCIe RC (pcie) | 8 | RASDP | 8 | RC # |
+ +-----------------+------------+----------+----------------+----------------------------------------+
+ | OCM (other) | 9 | ERR0 | 0 | 0 |
+ +-----------------+------------+----------+----------------+----------------------------------------+
+ | OCM (other) | 9 | ERR1 | 1 | 0 |
+ +-----------------+------------+----------+----------------+----------------------------------------+
+ | OCM (other) | 9 | ERR2 | 2 | 0 |
+ +-----------------+------------+----------+----------------+----------------------------------------+
+ | SMpro (other) | 10 | ERR0 | 0 | 0 |
+ +-----------------+------------+----------+----------------+----------------------------------------+
+ | SMpro (other) | 10 | ERR1 | 1 | 0 |
+ +-----------------+------------+----------+----------------+----------------------------------------+
+ | SMpro (other) | 10 | MPA_ERR | 2 | 0 |
+ +-----------------+------------+----------+----------------+----------------------------------------+
+ | PMpro (other) | 11 | ERR0 | 0 | 0 |
+ +-----------------+------------+----------+----------------+----------------------------------------+
+ | PMpro (other) | 11 | ERR1 | 1 | 0 |
+ +-----------------+------------+----------+----------------+----------------------------------------+
+ | PMpro (other) | 11 | MPA_ERR | 2 | 0 |
+ +-----------------+------------+----------+----------------+----------------------------------------+
+
+ Example::
+
+ # cat error_other_ue
+ 880807001e004010401040101500000001004010401040100c0000000000000000000000000000000000000000000000
+
+ The detail of each sysfs entries is as below:
+
+ +-------------+---------------------------------------------------------+----------------------------------+
+ | Error | Sysfs entry | Description (when triggered) |
+ +-------------+---------------------------------------------------------+----------------------------------+
+ | Core's CE | /sys/bus/platform/devices/smpro-errmon.*/error_core_ce | Core has CE error |
+ +-------------+---------------------------------------------------------+----------------------------------+
+ | Core's UE | /sys/bus/platform/devices/smpro-errmon.*/error_core_ue | Core has UE error |
+ +-------------+---------------------------------------------------------+----------------------------------+
+ | Memory's CE | /sys/bus/platform/devices/smpro-errmon.*/error_mem_ce | Memory has CE error |
+ +-------------+---------------------------------------------------------+----------------------------------+
+ | Memory's UE | /sys/bus/platform/devices/smpro-errmon.*/error_mem_ue | Memory has UE error |
+ +-------------+---------------------------------------------------------+----------------------------------+
+ | PCIe's CE | /sys/bus/platform/devices/smpro-errmon.*/error_pcie_ce | any PCIe controller has CE error |
+ +-------------+---------------------------------------------------------+----------------------------------+
+ | PCIe's UE | /sys/bus/platform/devices/smpro-errmon.*/error_pcie_ue | any PCIe controller has UE error |
+ +-------------+---------------------------------------------------------+----------------------------------+
+ | Other's CE | /sys/bus/platform/devices/smpro-errmon.*/error_other_ce | any other CE error |
+ +-------------+---------------------------------------------------------+----------------------------------+
+ | Other's UE | /sys/bus/platform/devices/smpro-errmon.*/error_other_ue | any other UE error |
+ +-------------+---------------------------------------------------------+----------------------------------+
+
+ UE: Uncorrect-able Error
+ CE: Correct-able Error
+
+ For details, see section `3.3 Ampere (Vendor-Specific) Error Record Formats,
+ Altra Family RAS Supplement`.
+
+
+What: /sys/bus/platform/devices/smpro-errmon.*/overflow_[core|mem|pcie|other]_[ce|ue]
+KernelVersion: 6.1
+Contact: Quan Nguyen <quan@os.amperecomputing.com>
+Description:
+ (RO) Return the overflow status of each type HW error reported:
+
+ - 0 : No overflow
+ - 1 : There is an overflow and the oldest HW errors are dropped
+
+ The detail of each sysfs entries is as below:
+
+ +-------------+-----------------------------------------------------------+---------------------------------------+
+ | Overflow | Sysfs entry | Description |
+ +-------------+-----------------------------------------------------------+---------------------------------------+
+ | Core's CE | /sys/bus/platform/devices/smpro-errmon.*/overflow_core_ce | Core CE error overflow |
+ +-------------+-----------------------------------------------------------+---------------------------------------+
+ | Core's UE | /sys/bus/platform/devices/smpro-errmon.*/overflow_core_ue | Core UE error overflow |
+ +-------------+-----------------------------------------------------------+---------------------------------------+
+ | Memory's CE | /sys/bus/platform/devices/smpro-errmon.*/overflow_mem_ce | Memory CE error overflow |
+ +-------------+-----------------------------------------------------------+---------------------------------------+
+ | Memory's UE | /sys/bus/platform/devices/smpro-errmon.*/overflow_mem_ue | Memory UE error overflow |
+ +-------------+-----------------------------------------------------------+---------------------------------------+
+ | PCIe's CE | /sys/bus/platform/devices/smpro-errmon.*/overflow_pcie_ce | any PCIe controller CE error overflow |
+ +-------------+-----------------------------------------------------------+---------------------------------------+
+ | PCIe's UE | /sys/bus/platform/devices/smpro-errmon.*/overflow_pcie_ue | any PCIe controller UE error overflow |
+ +-------------+-----------------------------------------------------------+---------------------------------------+
+ | Other's CE | /sys/bus/platform/devices/smpro-errmon.*/overflow_other_ce| any other CE error overflow |
+ +-------------+-----------------------------------------------------------+---------------------------------------+
+ | Other's UE | /sys/bus/platform/devices/smpro-errmon.*/overflow_other_ue| other UE error overflow |
+ +-------------+-----------------------------------------------------------+---------------------------------------+
+
+ where:
+
+ - UE: Uncorrect-able Error
+ - CE: Correct-able Error
+
+What: /sys/bus/platform/devices/smpro-errmon.*/[error|warn]_[smpro|pmpro]
+KernelVersion: 6.1
+Contact: Quan Nguyen <quan@os.amperecomputing.com>
+Description:
+ (RO) Contains the internal firmware error/warning printed as hex format.
+
+ The detail of each sysfs entries is as below:
+
+ +---------------+------------------------------------------------------+--------------------------+
+ | Error | Sysfs entry | Description |
+ +---------------+------------------------------------------------------+--------------------------+
+ | SMpro error | /sys/bus/platform/devices/smpro-errmon.*/error_smpro | system has SMpro error |
+ +---------------+------------------------------------------------------+--------------------------+
+ | SMpro warning | /sys/bus/platform/devices/smpro-errmon.*/warn_smpro | system has SMpro warning |
+ +---------------+------------------------------------------------------+--------------------------+
+ | PMpro error | /sys/bus/platform/devices/smpro-errmon.*/error_pmpro | system has PMpro error |
+ +---------------+------------------------------------------------------+--------------------------+
+ | PMpro warning | /sys/bus/platform/devices/smpro-errmon.*/warn_pmpro | system has PMpro warning |
+ +---------------+------------------------------------------------------+--------------------------+
+
+ For details, see section `5.10 RAS Internal Error Register Definitions,
+ Altra Family Soc BMC Interface Specification`.
+
+What: /sys/bus/platform/devices/smpro-errmon.*/event_[vrd_warn_fault|vrd_hot|dimm_hot|dimm_2x_refresh]
+KernelVersion: 6.1 (event_[vrd_warn_fault|vrd_hot|dimm_hot]), 6.4 (event_dimm_2x_refresh)
+Contact: Quan Nguyen <quan@os.amperecomputing.com>
+Description:
+ (RO) Contains the detail information in case of VRD/DIMM warning/hot events
+ in hex format as below::
+
+ AAAA
+
+ where:
+
+ - ``AAAA``: The event detail information data
+
+ The detail of each sysfs entries is as below:
+
+ +---------------+---------------------------------------------------------------+---------------------+
+ | Event | Sysfs entry | Description |
+ +---------------+---------------------------------------------------------------+---------------------+
+ | VRD HOT | /sys/bus/platform/devices/smpro-errmon.*/event_vrd_hot | VRD Hot |
+ +---------------+---------------------------------------------------------------+---------------------+
+ | VR Warn/Fault | /sys/bus/platform/devices/smpro-errmon.*/event_vrd_warn_fault | VR Warning or Fault |
+ +---------------+---------------------------------------------------------------+---------------------+
+ | DIMM HOT | /sys/bus/platform/devices/smpro-errmon.*/event_dimm_hot | DIMM Hot |
+ +---------------+---------------------------------------------------------------+---------------------+
+ | DIMM 2X | /sys/bus/platform/devices/smpro-errmon.*/event_dimm_2x_refresh| DIMM 2x refresh rate|
+ | REFRESH RATE | | event in high temp |
+ +---------------+---------------------------------------------------------------+---------------------+
+
+ For more details, see section `5.7 GPI Status Registers and 5.9 Memory Error Register Definitions,
+ Altra Family Soc BMC Interface Specification`.
+
+What: /sys/bus/platform/devices/smpro-errmon.*/event_dimm[0-15]_syndrome
+KernelVersion: 6.4
+Contact: Quan Nguyen <quan@os.amperecomputing.com>
+Description:
+ (RO) The sysfs returns the 2-byte DIMM failure syndrome data for slot
+ 0-15 if it failed to initialize.
+
+ For more details, see section `5.11 Boot Stage Register Definitions,
+ Altra Family Soc BMC Interface Specification`.
+
+What: /sys/bus/platform/devices/smpro-misc.*/boot_progress
+KernelVersion: 6.1
+Contact: Quan Nguyen <quan@os.amperecomputing.com>
+Description:
+ (RO) Contains the boot stages information in hex as format below::
+
+ AABBCCCCCCCC
+
+ where:
+
+ - ``AA`` : The boot stages
+
+ - 00: SMpro firmware booting
+ - 01: PMpro firmware booting
+ - 02: ATF BL1 firmware booting
+ - 03: DDR initialization
+ - 04: DDR training report status
+ - 05: ATF BL2 firmware booting
+ - 06: ATF BL31 firmware booting
+ - 07: ATF BL32 firmware booting
+ - 08: UEFI firmware booting
+ - 09: OS booting
+
+ - ``BB`` : Boot status
+
+ - 00: Not started
+ - 01: Started
+ - 02: Completed without error
+ - 03: Failed.
+
+ - ``CCCCCCCC``: Boot status information defined for each boot stages
+
+ For details, see section `5.11 Boot Stage Register Definitions`
+ and section `6. Processor Boot Progress Codes, Altra Family Soc BMC
+ Interface Specification`.
+
+
+What: /sys/bus/platform/devices/smpro-misc*/soc_power_limit
+KernelVersion: 6.1
+Contact: Quan Nguyen <quan@os.amperecomputing.com>
+Description:
+ (RW) Contains the desired SoC power limit in Watt.
+ Writes to this sysfs set the desired SoC power limit (W).
+ Reads from this register return the current SoC power limit (W).
+ The value ranges:
+
+ - Minimum: 120 W
+ - Maximum: Socket TDP power
diff --git a/Documentation/ABI/testing/sysfs-bus-platform-drivers-amd_x3d_vcache b/Documentation/ABI/testing/sysfs-bus-platform-drivers-amd_x3d_vcache
new file mode 100644
index 000000000000..ac3431736f5c
--- /dev/null
+++ b/Documentation/ABI/testing/sysfs-bus-platform-drivers-amd_x3d_vcache
@@ -0,0 +1,12 @@
+What: /sys/bus/platform/drivers/amd_x3d_vcache/AMDI0101:00/amd_x3d_mode
+Date: November 2024
+KernelVersion: 6.13
+Contact: Basavaraj Natikar <Basavaraj.Natikar@amd.com>
+Description: (RW) AMD 3D V-Cache optimizer allows users to switch CPU core
+ rankings dynamically.
+
+ This file switches between these two modes:
+ - "frequency" cores within the faster CCD are prioritized before
+ those in the slower CCD.
+ - "cache" cores within the larger L3 CCD are prioritized before
+ those in the smaller L3 CCD.
diff --git a/Documentation/ABI/testing/sysfs-bus-platform-onboard-usb-dev b/Documentation/ABI/testing/sysfs-bus-platform-onboard-usb-dev
new file mode 100644
index 000000000000..b06a48c3c85a
--- /dev/null
+++ b/Documentation/ABI/testing/sysfs-bus-platform-onboard-usb-dev
@@ -0,0 +1,9 @@
+What: /sys/bus/platform/devices/<dev>/always_powered_in_suspend
+Date: June 2022
+KernelVersion: 5.20
+Contact: Matthias Kaehlcke <matthias@kaehlcke.net>
+ linux-usb@vger.kernel.org
+Description:
+ (RW) Controls whether the USB hub remains always powered
+ during system suspend or not. This attribute is not
+ available for non-hub devices.
diff --git a/Documentation/ABI/testing/sysfs-bus-spi-devices-spi-nor b/Documentation/ABI/testing/sysfs-bus-spi-devices-spi-nor
index d76cd3946434..9ed5582ddea2 100644
--- a/Documentation/ABI/testing/sysfs-bus-spi-devices-spi-nor
+++ b/Documentation/ABI/testing/sysfs-bus-spi-devices-spi-nor
@@ -5,6 +5,9 @@ Contact: linux-mtd@lists.infradead.org
Description: (RO) The JEDEC ID of the SPI NOR flash as reported by the
flash device.
+ The attribute is not present if the flash doesn't support
+ the "Read JEDEC ID" command (9Fh). This is the case for
+ non-JEDEC compliant flashes.
What: /sys/bus/spi/devices/.../spi-nor/manufacturer
Date: April 2021
@@ -12,6 +15,9 @@ KernelVersion: 5.14
Contact: linux-mtd@lists.infradead.org
Description: (RO) Manufacturer of the SPI NOR flash.
+ The attribute is not present if the flash device isn't
+ known to the kernel and is only probed by its SFDP
+ tables.
What: /sys/bus/spi/devices/.../spi-nor/partname
Date: April 2021
@@ -19,6 +25,9 @@ KernelVersion: 5.14
Contact: linux-mtd@lists.infradead.org
Description: (RO) Part name of the SPI NOR flash.
+ The attribute is optional. User space should not rely on
+ it to be present or even correct. Instead, user space
+ should read the jedec_id attribute.
What: /sys/bus/spi/devices/.../spi-nor/sfdp
Date: April 2021
diff --git a/Documentation/ABI/testing/sysfs-bus-surface_aggregator-tabletsw b/Documentation/ABI/testing/sysfs-bus-surface_aggregator-tabletsw
new file mode 100644
index 000000000000..74cd9d754e60
--- /dev/null
+++ b/Documentation/ABI/testing/sysfs-bus-surface_aggregator-tabletsw
@@ -0,0 +1,57 @@
+What: /sys/bus/surface_aggregator/devices/01:0e:01:00:01/state
+Date: July 2022
+KernelVersion: 5.20
+Contact: Maximilian Luz <luzmaximilian@gmail.com>
+Description:
+ This attribute returns a string with the current type-cover
+ or device posture, as indicated by the embedded controller.
+ Currently returned posture states are:
+
+ - "disconnected": The type-cover has been disconnected.
+
+ - "closed": The type-cover has been folded closed and lies on
+ top of the display.
+
+ - "laptop": The type-cover is open and in laptop-mode, i.e.,
+ ready for normal use.
+
+ - "folded-canvas": The type-cover has been folded back
+ part-ways, but does not lie flush with the back side of the
+ device. In general, this means that the kick-stand is used
+ and extended atop of the cover.
+
+ - "folded-back": The type cover has been fully folded back and
+ lies flush with the back side of the device.
+
+ - "<unknown>": The current state is unknown to the driver, for
+ example due to newer as-of-yet unsupported hardware.
+
+ New states may be introduced with new hardware. Users therefore
+ must not rely on this list of states being exhaustive and
+ gracefully handle unknown states.
+
+What: /sys/bus/surface_aggregator/devices/01:26:01:00:01/state
+Date: July 2022
+KernelVersion: 5.20
+Contact: Maximilian Luz <luzmaximilian@gmail.com>
+Description:
+ This attribute returns a string with the current device posture, as indicated by the embedded controller. Currently
+ returned posture states are:
+
+ - "closed": The lid of the device is closed.
+
+ - "laptop": The lid of the device is opened and the device
+ operates as a normal laptop.
+
+ - "slate": The screen covers the keyboard or has been flipped
+ back and the device operates mainly based on touch input.
+
+ - "tablet": The device operates as tablet and exclusively
+ relies on touch input (or external peripherals).
+
+ - "<unknown>": The current state is unknown to the driver, for
+ example due to newer as-of-yet unsupported hardware.
+
+ New states may be introduced with new hardware. Users therefore
+ must not rely on this list of states being exhaustive and
+ gracefully handle unknown states.
diff --git a/Documentation/ABI/testing/sysfs-bus-thunderbolt b/Documentation/ABI/testing/sysfs-bus-thunderbolt
index b7e87f6c7d47..221b6c75ed93 100644
--- a/Documentation/ABI/testing/sysfs-bus-thunderbolt
+++ b/Documentation/ABI/testing/sysfs-bus-thunderbolt
@@ -1,7 +1,7 @@
What: /sys/bus/thunderbolt/devices/.../domainX/boot_acl
Date: Jun 2018
KernelVersion: 4.17
-Contact: thunderbolt-software@lists.01.org
+Contact: Mika Westerberg <mika.westerberg@linux.intel.com>
Description: Holds a comma separated list of device unique_ids that
are allowed to be connected automatically during system
startup (e.g boot devices). The list always contains
@@ -33,7 +33,7 @@ Description: This attribute tells whether the system supports
What: /sys/bus/thunderbolt/devices/.../domainX/iommu_dma_protection
Date: Mar 2019
KernelVersion: 4.21
-Contact: thunderbolt-software@lists.01.org
+Contact: Mika Westerberg <mika.westerberg@linux.intel.com>
Description: This attribute tells whether the system uses IOMMU
for DMA protection. Value of 1 means IOMMU is used 0 means
it is not (DMA protection is solely based on Thunderbolt
@@ -42,7 +42,7 @@ Description: This attribute tells whether the system uses IOMMU
What: /sys/bus/thunderbolt/devices/.../domainX/security
Date: Sep 2017
KernelVersion: 4.13
-Contact: thunderbolt-software@lists.01.org
+Contact: Mika Westerberg <mika.westerberg@linux.intel.com>
Description: This attribute holds current Thunderbolt security level
set by the system BIOS. Possible values are:
@@ -64,7 +64,7 @@ Description: This attribute holds current Thunderbolt security level
What: /sys/bus/thunderbolt/devices/.../authorized
Date: Sep 2017
KernelVersion: 4.13
-Contact: thunderbolt-software@lists.01.org
+Contact: Mika Westerberg <mika.westerberg@linux.intel.com>
Description: This attribute is used to authorize Thunderbolt devices
after they have been connected. If the device is not
authorized, no PCIe devices are available to the system.
@@ -98,7 +98,7 @@ Description: This attribute is used to authorize Thunderbolt devices
What: /sys/bus/thunderbolt/devices/.../boot
Date: Jun 2018
KernelVersion: 4.17
-Contact: thunderbolt-software@lists.01.org
+Contact: Mika Westerberg <mika.westerberg@linux.intel.com>
Description: This attribute contains 1 if Thunderbolt device was already
authorized on boot and 0 otherwise.
@@ -113,7 +113,7 @@ Description: This attribute contains the generation of the Thunderbolt
What: /sys/bus/thunderbolt/devices/.../key
Date: Sep 2017
KernelVersion: 4.13
-Contact: thunderbolt-software@lists.01.org
+Contact: Mika Westerberg <mika.westerberg@linux.intel.com>
Description: When a devices supports Thunderbolt secure connect it will
have this attribute. Writing 32 byte hex string changes
authorization to use the secure connection method instead.
@@ -123,14 +123,14 @@ Description: When a devices supports Thunderbolt secure connect it will
What: /sys/bus/thunderbolt/devices/.../device
Date: Sep 2017
KernelVersion: 4.13
-Contact: thunderbolt-software@lists.01.org
+Contact: Mika Westerberg <mika.westerberg@linux.intel.com>
Description: This attribute contains id of this device extracted from
the device DROM.
What: /sys/bus/thunderbolt/devices/.../device_name
Date: Sep 2017
KernelVersion: 4.13
-Contact: thunderbolt-software@lists.01.org
+Contact: Mika Westerberg <mika.westerberg@linux.intel.com>
Description: This attribute contains name of this device extracted from
the device DROM.
@@ -153,7 +153,7 @@ Date: Jan 2020
KernelVersion: 5.5
Contact: Mika Westerberg <mika.westerberg@linux.intel.com>
Description: This attribute reports number of RX lanes the device is
- using simultaneusly through its upstream port.
+ using simultaneously through its upstream port.
What: /sys/bus/thunderbolt/devices/.../tx_speed
Date: Jan 2020
@@ -167,26 +167,26 @@ Date: Jan 2020
KernelVersion: 5.5
Contact: Mika Westerberg <mika.westerberg@linux.intel.com>
Description: This attribute reports number of TX lanes the device is
- using simultaneusly through its upstream port.
+ using simultaneously through its upstream port.
What: /sys/bus/thunderbolt/devices/.../vendor
Date: Sep 2017
KernelVersion: 4.13
-Contact: thunderbolt-software@lists.01.org
+Contact: Mika Westerberg <mika.westerberg@linux.intel.com>
Description: This attribute contains vendor id of this device extracted
from the device DROM.
What: /sys/bus/thunderbolt/devices/.../vendor_name
Date: Sep 2017
KernelVersion: 4.13
-Contact: thunderbolt-software@lists.01.org
+Contact: Mika Westerberg <mika.westerberg@linux.intel.com>
Description: This attribute contains vendor name of this device extracted
from the device DROM.
What: /sys/bus/thunderbolt/devices/.../unique_id
Date: Sep 2017
KernelVersion: 4.13
-Contact: thunderbolt-software@lists.01.org
+Contact: Mika Westerberg <mika.westerberg@linux.intel.com>
Description: This attribute contains unique_id string of this device.
This is either read from hardware registers (UUID on
newer hardware) or based on UID from the device DROM.
@@ -195,7 +195,7 @@ Description: This attribute contains unique_id string of this device.
What: /sys/bus/thunderbolt/devices/.../nvm_version
Date: Sep 2017
KernelVersion: 4.13
-Contact: thunderbolt-software@lists.01.org
+Contact: Mika Westerberg <mika.westerberg@linux.intel.com>
Description: If the device has upgradeable firmware the version
number is available here. Format: %x.%x, major.minor.
If the device is in safe mode reading the file returns
@@ -204,7 +204,7 @@ Description: If the device has upgradeable firmware the version
What: /sys/bus/thunderbolt/devices/.../nvm_authenticate
Date: Sep 2017
KernelVersion: 4.13
-Contact: thunderbolt-software@lists.01.org
+Contact: Mika Westerberg <mika.westerberg@linux.intel.com>
Description: When new NVM image is written to the non-active NVM
area (through non_activeX NVMem device), the
authentication procedure is started by writing to
@@ -246,7 +246,7 @@ Description: For supported devices, automatically authenticate the new Thunderbo
What: /sys/bus/thunderbolt/devices/<xdomain>.<service>/key
Date: Jan 2018
KernelVersion: 4.15
-Contact: thunderbolt-software@lists.01.org
+Contact: Mika Westerberg <mika.westerberg@linux.intel.com>
Description: This contains name of the property directory the XDomain
service exposes. This entry describes the protocol in
question. Following directories are already reserved by
@@ -261,38 +261,48 @@ Description: This contains name of the property directory the XDomain
What: /sys/bus/thunderbolt/devices/<xdomain>.<service>/modalias
Date: Jan 2018
KernelVersion: 4.15
-Contact: thunderbolt-software@lists.01.org
+Contact: Mika Westerberg <mika.westerberg@linux.intel.com>
Description: Stores the same MODALIAS value emitted by uevent for
the XDomain service. Format: tbtsvc:kSpNvNrN
What: /sys/bus/thunderbolt/devices/<xdomain>.<service>/prtcid
Date: Jan 2018
KernelVersion: 4.15
-Contact: thunderbolt-software@lists.01.org
+Contact: Mika Westerberg <mika.westerberg@linux.intel.com>
Description: This contains XDomain protocol identifier the XDomain
service supports.
What: /sys/bus/thunderbolt/devices/<xdomain>.<service>/prtcvers
Date: Jan 2018
KernelVersion: 4.15
-Contact: thunderbolt-software@lists.01.org
+Contact: Mika Westerberg <mika.westerberg@linux.intel.com>
Description: This contains XDomain protocol version the XDomain
service supports.
What: /sys/bus/thunderbolt/devices/<xdomain>.<service>/prtcrevs
Date: Jan 2018
KernelVersion: 4.15
-Contact: thunderbolt-software@lists.01.org
+Contact: Mika Westerberg <mika.westerberg@linux.intel.com>
Description: This contains XDomain software version the XDomain
service supports.
What: /sys/bus/thunderbolt/devices/<xdomain>.<service>/prtcstns
Date: Jan 2018
KernelVersion: 4.15
-Contact: thunderbolt-software@lists.01.org
+Contact: Mika Westerberg <mika.westerberg@linux.intel.com>
Description: This contains XDomain service specific settings as
bitmask. Format: %x
+What: /sys/bus/thunderbolt/devices/usb4_portX/connector
+Date: April 2022
+Contact: Heikki Krogerus <heikki.krogerus@linux.intel.com>
+Description:
+ Symlink to the USB Type-C connector. This link is only
+ created when USB Type-C Connector Class is enabled,
+ and only if the system firmware is capable of
+ describing the connection between a port and its
+ connector.
+
What: /sys/bus/thunderbolt/devices/usb4_portX/link
Date: Sep 2021
KernelVersion: v5.14
diff --git a/Documentation/ABI/testing/sysfs-bus-umc b/Documentation/ABI/testing/sysfs-bus-umc
deleted file mode 100644
index 948fec412446..000000000000
--- a/Documentation/ABI/testing/sysfs-bus-umc
+++ /dev/null
@@ -1,28 +0,0 @@
-What: /sys/bus/umc/
-Date: July 2008
-KernelVersion: 2.6.27
-Contact: David Vrabel <david.vrabel@csr.com>
-Description:
- The Wireless Host Controller Interface (WHCI)
- specification describes a PCI-based device with
- multiple capabilities; the UWB Multi-interface
- Controller (UMC).
-
- The umc bus presents each of the individual
- capabilties as a device.
-
-What: /sys/bus/umc/devices/.../capability_id
-Date: July 2008
-KernelVersion: 2.6.27
-Contact: David Vrabel <david.vrabel@csr.com>
-Description:
- The ID of this capability, with 0 being the radio
- controller capability.
-
-What: /sys/bus/umc/devices/.../version
-Date: July 2008
-KernelVersion: 2.6.27
-Contact: David Vrabel <david.vrabel@csr.com>
-Description:
- The specification version this capability's hardware
- interface complies with.
diff --git a/Documentation/ABI/testing/sysfs-bus-usb b/Documentation/ABI/testing/sysfs-bus-usb
index 7efe31ed3a25..af9b653422f1 100644
--- a/Documentation/ABI/testing/sysfs-bus-usb
+++ b/Documentation/ABI/testing/sysfs-bus-usb
@@ -28,40 +28,6 @@ Description:
drivers, non-authorized one are not. By default, wired
USB devices are authorized.
- Certified Wireless USB devices are not authorized
- initially and should be (by writing 1) after the
- device has been authenticated.
-
-What: /sys/bus/usb/device/.../wusb_cdid
-Date: July 2008
-KernelVersion: 2.6.27
-Contact: David Vrabel <david.vrabel@csr.com>
-Description:
- For Certified Wireless USB devices only.
-
- A devices's CDID, as 16 space-separated hex octets.
-
-What: /sys/bus/usb/device/.../wusb_ck
-Date: July 2008
-KernelVersion: 2.6.27
-Contact: David Vrabel <david.vrabel@csr.com>
-Description:
- For Certified Wireless USB devices only.
-
- Write the device's connection key (CK) to start the
- authentication of the device. The CK is 16
- space-separated hex octets.
-
-What: /sys/bus/usb/device/.../wusb_disconnect
-Date: July 2008
-KernelVersion: 2.6.27
-Contact: David Vrabel <david.vrabel@csr.com>
-Description:
- For Certified Wireless USB devices only.
-
- Write a 1 to force the device to disconnect
- (equivalent to unplugging a wired USB device).
-
What: /sys/bus/usb/drivers/.../new_id
Date: October 2011
Contact: linux-usb@vger.kernel.org
@@ -166,6 +132,23 @@ Description:
The file will be present for all speeds of USB devices, and will
always read "no" for USB 1.1 and USB 2.0 devices.
+What: /sys/bus/usb/devices/<INTERFACE>/wireless_status
+Date: February 2023
+Contact: Bastien Nocera <hadess@hadess.net>
+Description:
+ Some USB devices use a USB receiver dongle to communicate
+ wirelessly with their device using proprietary protocols. This
+ attribute allows user-space to know whether the device is
+ connected to its receiver dongle, and, for example, consider
+ the device to be absent when choosing whether to show the
+ device's battery, show a headset in a list of outputs, or show
+ an on-screen keyboard if the only wireless keyboard is
+ turned off.
+ This attribute is not to be used to replace protocol specific
+ statuses available in WWAN, WLAN/Wi-Fi, Bluetooth, etc.
+ If the device does not use a receiver dongle with a wireless
+ device, then this attribute will not exist.
+
What: /sys/bus/usb/devices/.../<hub_interface>/port<X>
Date: August 2012
Contact: Lan Tianyu <tianyu.lan@intel.com>
@@ -253,6 +236,38 @@ Description:
only if the system firmware is capable of describing the
connection between a port and its connector.
+What: /sys/bus/usb/devices/.../<hub_interface>/port<X>/disable
+Date: June 2022
+Contact: Michael Grzeschik <m.grzeschik@pengutronix.de>
+Description:
+ This file controls the state of a USB port, including
+ Vbus power output (but only on hubs that support
+ power switching -- most hubs don't support it). If
+ a port is disabled, the port is unusable: Devices
+ attached to the port will not be detected, initialized,
+ or enumerated.
+
+What: /sys/bus/usb/devices/.../<hub_interface>/port<X>/early_stop
+Date: Sep 2022
+Contact: Ray Chi <raychi@google.com>
+Description:
+ Some USB hosts have some watchdog mechanisms so that the device
+ may enter ramdump if it takes a long time during port initialization.
+ This attribute allows each port just has two attempts so that the
+ port initialization will be failed quickly. In addition, if a port
+ which is marked with early_stop has failed to initialize, it will ignore
+ all future connections until this attribute is clear.
+
+What: /sys/bus/usb/devices/.../<hub_interface>/port<X>/state
+Date: June 2023
+Contact: Roy Luo <royluo@google.com>
+Description:
+ Indicates current state of the USB device attached to the port.
+ Valid states are: 'not-attached', 'attached', 'powered',
+ 'reconnecting', 'unauthenticated', 'default', 'addressed',
+ 'configured', and 'suspended'. This file supports poll() to
+ monitor the state change from user space.
+
What: /sys/bus/usb/devices/.../power/usb2_lpm_l1_timeout
Date: May 2013
Contact: Mathias Nyman <mathias.nyman@linux.intel.com>
@@ -298,6 +313,15 @@ Description:
Inter-Chip SSIC devices support asymmetric lanes up to 4 lanes per
direction. Devices before USB 3.2 are single lane (tx_lanes = 1)
+What: /sys/bus/usb/devices/.../typec
+Date: November 2023
+Contact: Heikki Krogerus <heikki.krogerus@linux.intel.com>
+Description:
+ Symlink to the USB Type-C partner device. USB Type-C partner
+ represents the component that communicates over the
+ Configuration Channel (CC signal on USB Type-C connectors and
+ cables) with the local port.
+
What: /sys/bus/usb/devices/usbX/bAlternateSetting
Description:
The current interface alternate setting number, in decimal.
@@ -418,6 +442,16 @@ What: /sys/bus/usb/devices/usbX/descriptors
Description:
Contains the interface descriptors, in binary.
+What: /sys/bus/usb/devices/usbX/bos_descriptors
+Date: March 2024
+Contact: Elbert Mai <code@elbertmai.com>
+Description:
+ Binary file containing the cached binary device object store (BOS)
+ of the device. This consists of the BOS descriptor followed by the
+ set of device capability descriptors. All descriptors read from
+ this file are in bus-endian format. Note that the kernel will not
+ request the BOS from a device if its bcdUSB is less than 0x0201.
+
What: /sys/bus/usb/devices/usbX/idProduct
Description:
Product ID, in hexadecimal.
diff --git a/Documentation/ABI/testing/sysfs-bus-vdpa b/Documentation/ABI/testing/sysfs-bus-vdpa
index 28a6111202ba..2c833b5163f2 100644
--- a/Documentation/ABI/testing/sysfs-bus-vdpa
+++ b/Documentation/ABI/testing/sysfs-bus-vdpa
@@ -1,6 +1,6 @@
-What: /sys/bus/vdpa/driver_autoprobe
+What: /sys/bus/vdpa/drivers_autoprobe
Date: March 2020
-Contact: virtualization@lists.linux-foundation.org
+Contact: virtualization@lists.linux.dev
Description:
This file determines whether new devices are immediately bound
to a driver after the creation. It initially contains 1, which
@@ -12,17 +12,17 @@ Description:
What: /sys/bus/vdpa/driver_probe
Date: March 2020
-Contact: virtualization@lists.linux-foundation.org
+Contact: virtualization@lists.linux.dev
Description:
Writing a device name to this file will cause the kernel binds
devices to a compatible driver.
- This can be useful when /sys/bus/vdpa/driver_autoprobe is
+ This can be useful when /sys/bus/vdpa/drivers_autoprobe is
disabled.
What: /sys/bus/vdpa/drivers/.../bind
Date: March 2020
-Contact: virtualization@lists.linux-foundation.org
+Contact: virtualization@lists.linux.dev
Description:
Writing a device name to this file will cause the driver to
attempt to bind to the device. This is useful for overriding
@@ -30,7 +30,7 @@ Description:
What: /sys/bus/vdpa/drivers/.../unbind
Date: March 2020
-Contact: virtualization@lists.linux-foundation.org
+Contact: virtualization@lists.linux.dev
Description:
Writing a device name to this file will cause the driver to
attempt to unbind from the device. This may be useful when
@@ -38,7 +38,7 @@ Description:
What: /sys/bus/vdpa/devices/.../driver_override
Date: November 2021
-Contact: virtualization@lists.linux-foundation.org
+Contact: virtualization@lists.linux.dev
Description:
This file allows the driver for a device to be specified.
When specified, only a driver with a name matching the value
diff --git a/Documentation/ABI/testing/sysfs-bus-wmi b/Documentation/ABI/testing/sysfs-bus-wmi
new file mode 100644
index 000000000000..d71a219c610e
--- /dev/null
+++ b/Documentation/ABI/testing/sysfs-bus-wmi
@@ -0,0 +1,81 @@
+What: /sys/bus/wmi/devices/.../driver_override
+Date: February 2024
+Contact: Armin Wolf <W_Armin@gmx.de>
+Description:
+ This file allows the driver for a device to be specified which
+ will override standard ID table matching.
+ When specified, only a driver with a name matching the value
+ written to driver_override will have an opportunity to bind
+ to the device.
+ The override is specified by writing a string to the
+ driver_override file (echo wmi-event-dummy > driver_override).
+ The override may be cleared with an empty string (echo > \
+ driver_override) which returns the device to standard matching
+ rules binding.
+ Writing to driver_override does not automatically unbind the
+ device from its current driver or make any attempt to automatically
+ load the specified driver. If no driver with a matching name is
+ currently loaded in the kernel, the device will not bind to any
+ driver.
+ This also allows devices to opt-out of driver binding using a
+ driver_override name such as "none". Only a single driver may be
+ specified in the override, there is no support for parsing delimiters.
+
+What: /sys/bus/wmi/devices/.../modalias
+Date: November 20:15
+Contact: Andy Lutomirski <luto@kernel.org>
+Description:
+ This file contains the MODALIAS value emitted by uevent for a
+ given WMI device.
+
+ Format: wmi:XXXXXXXX-XXXX-XXXX-XXXX-XXXXXXXXXXXX.
+
+What: /sys/bus/wmi/devices/.../guid
+Date: November 2015
+Contact: Andy Lutomirski <luto@kernel.org>
+Description:
+ This file contains the GUID used to match WMI devices to
+ compatible WMI drivers. This GUID is not necessarily unique
+ inside a given machine, it is solely used to identify the
+ interface exposed by a given WMI device.
+
+What: /sys/bus/wmi/devices/.../object_id
+Date: November 2015
+Contact: Andy Lutomirski <luto@kernel.org>
+Description:
+ This file contains the WMI object ID used internally to construct
+ the ACPI method names used by non-event WMI devices. It contains
+ two ASCII letters.
+
+What: /sys/bus/wmi/devices/.../notify_id
+Date: November 2015
+Contact: Andy Lutomirski <luto@kernel.org>
+Description:
+ This file contains the WMI notify ID used internally to map ACPI
+ events to WMI event devices. It contains two ASCII letters.
+
+What: /sys/bus/wmi/devices/.../instance_count
+Date: November 2015
+Contact: Andy Lutomirski <luto@kernel.org>
+Description:
+ This file contains the number of WMI object instances being
+ present on a given WMI device. It contains a non-negative
+ number.
+
+What: /sys/bus/wmi/devices/.../expensive
+Date: November 2015
+Contact: Andy Lutomirski <luto@kernel.org>
+Description:
+ This file contains a boolean flag signaling if interacting with
+ the given WMI device will consume significant CPU resources.
+ The WMI driver core will take care of enabling/disabling such
+ WMI devices.
+
+What: /sys/bus/wmi/devices/.../setable
+Date: May 2017
+Contact: Darren Hart (VMware) <dvhart@infradead.org>
+Description:
+ This file contains a boolean flags signaling the data block
+ associated with the given WMI device is writable. If the
+ given WMI device is not associated with a data block, then
+ this file will not exist.
diff --git a/Documentation/ABI/testing/sysfs-class b/Documentation/ABI/testing/sysfs-class
index 676530fcf747..906735faa1b8 100644
--- a/Documentation/ABI/testing/sysfs-class
+++ b/Documentation/ABI/testing/sysfs-class
@@ -1,5 +1,5 @@
What: /sys/class/
-Date: Febuary 2006
+Date: February 2006
Contact: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Description:
The /sys/class directory will consist of a group of
diff --git a/Documentation/ABI/testing/sysfs-class-bdi b/Documentation/ABI/testing/sysfs-class-bdi
index 6d2a2fc189dd..0d2abd88a18c 100644
--- a/Documentation/ABI/testing/sysfs-class-bdi
+++ b/Documentation/ABI/testing/sysfs-class-bdi
@@ -44,6 +44,21 @@ Description:
(read-write)
+What: /sys/class/bdi/<bdi>/min_ratio_fine
+Date: November 2022
+Contact: Stefan Roesch <shr@devkernel.io>
+Description:
+ Under normal circumstances each device is given a part of the
+ total write-back cache that relates to its current average
+ writeout speed in relation to the other devices.
+
+ The 'min_ratio_fine' parameter allows assigning a minimum reserve
+ of the write-back cache to a particular device. The value is
+ expressed as part of 1 million. For example, this is useful for
+ providing a minimum QoS.
+
+ (read-write)
+
What: /sys/class/bdi/<bdi>/max_ratio
Date: January 2008
Contact: Peter Zijlstra <a.p.zijlstra@chello.nl>
@@ -56,6 +71,59 @@ Description:
be trusted to play fair.
(read-write)
+
+What: /sys/class/bdi/<bdi>/max_ratio_fine
+Date: November 2022
+Contact: Stefan Roesch <shr@devkernel.io>
+Description:
+ Allows limiting a particular device to use not more than the
+ given value of the write-back cache. The value is given as part
+ of 1 million. This is useful in situations where we want to avoid
+ one device taking all or most of the write-back cache. For example
+ in case of an NFS mount that is prone to get stuck, or a FUSE mount
+ which cannot be trusted to play fair.
+
+ (read-write)
+
+What: /sys/class/bdi/<bdi>/min_bytes
+Date: October 2022
+Contact: Stefan Roesch <shr@devkernel.io>
+Description:
+ Under normal circumstances each device is given a part of the
+ total write-back cache that relates to its current average
+ writeout speed in relation to the other devices.
+
+ The 'min_bytes' parameter allows assigning a minimum
+ percentage of the write-back cache to a particular device
+ expressed in bytes.
+ For example, this is useful for providing a minimum QoS.
+
+ (read-write)
+
+What: /sys/class/bdi/<bdi>/max_bytes
+Date: October 2022
+Contact: Stefan Roesch <shr@devkernel.io>
+Description:
+ Allows limiting a particular device to use not more than the
+ given 'max_bytes' of the write-back cache. This is useful in
+ situations where we want to avoid one device taking all or
+ most of the write-back cache. For example in case of an NFS
+ mount that is prone to get stuck, a FUSE mount which cannot be
+ trusted to play fair, or a nbd device.
+
+ (read-write)
+
+What: /sys/class/bdi/<bdi>/strict_limit
+Date: October 2022
+Contact: Stefan Roesch <shr@devkernel.io>
+Description:
+ Forces per-BDI checks for the share of given device in the write-back
+ cache even before the global background dirty limit is reached. This
+ is useful in situations where the global limit is much higher than
+ affordable for given relatively slow (or untrusted) device. Turning
+ strictlimit on has no visible effect if max_ratio is equal to 100%.
+
+ (read-write)
What: /sys/class/bdi/<bdi>/stable_pages_required
Date: January 2008
Contact: Peter Zijlstra <a.p.zijlstra@chello.nl>
diff --git a/Documentation/ABI/testing/sysfs-class-chromeos b/Documentation/ABI/testing/sysfs-class-chromeos
index 74ece942722e..7fa5be6cc774 100644
--- a/Documentation/ABI/testing/sysfs-class-chromeos
+++ b/Documentation/ABI/testing/sysfs-class-chromeos
@@ -31,3 +31,23 @@ Date: August 2015
KernelVersion: 4.2
Description:
Show the information about the EC software and hardware.
+
+What: /sys/class/chromeos/cros_ec/usbpdmuxinfo
+Date: February 2025
+Description:
+ Show PD mux status for each typec port with following flags:
+ - "USB": USB connected
+ - "DP": DP connected
+ - "POLARITY": CC line Polarity inverted
+ - "HPD_IRQ": Hot Plug Detect interrupt is asserted
+ - "HPD_LVL": Hot Plug Detect level is asserted
+ - "SAFE": DP is in safe mode
+ - "TBT": TBT enabled
+ - "USB4": USB4 enabled
+
+What: /sys/class/chromeos/cros_ec/ap_mode_entry
+Date: February 2025
+Description:
+ Show if the AP mode entry EC feature is supported.
+ It indicates whether the EC waits for direction from the AP
+ to enter Type-C altmodes or USB4 mode.
diff --git a/Documentation/ABI/testing/sysfs-class-devfreq b/Documentation/ABI/testing/sysfs-class-devfreq
index 5e6b74f30406..df8ba88b9f6a 100644
--- a/Documentation/ABI/testing/sysfs-class-devfreq
+++ b/Documentation/ABI/testing/sysfs-class-devfreq
@@ -52,6 +52,9 @@ Description:
echo 0 > /sys/class/devfreq/.../trans_stat
+ If the transition table is bigger than PAGE_SIZE, reading
+ this will return an -EFBIG error.
+
What: /sys/class/devfreq/.../available_frequencies
Date: October 2012
Contact: Nishanth Menon <nm@ti.com>
@@ -129,3 +132,12 @@ Description:
A list of governors that support the node:
- simple_ondemand
+
+What: /sys/class/devfreq/.../related_cpus
+Date: June 2025
+Contact: Linux power management list <linux-pm@vger.kernel.org>
+Description: The list of CPUs whose performance is closely related to the
+ frequency of this devfreq domain.
+
+ This file is only present if a specific devfreq device is
+ closely associated with a subset of CPUs.
diff --git a/Documentation/ABI/testing/sysfs-class-drm b/Documentation/ABI/testing/sysfs-class-drm
new file mode 100644
index 000000000000..d23fed5e29a7
--- /dev/null
+++ b/Documentation/ABI/testing/sysfs-class-drm
@@ -0,0 +1,8 @@
+What: /sys/class/drm/.../boot_display
+Date: January 2026
+Contact: Linux DRI developers <dri-devel@vger.kernel.org>
+Description:
+ This file indicates that displays connected to the device were
+ used to display the boot sequence. If a display connected to
+ the device was used to display the boot sequence the file will
+ be present and contain "1".
diff --git a/Documentation/ABI/testing/sysfs-class-firmware b/Documentation/ABI/testing/sysfs-class-firmware
new file mode 100644
index 000000000000..fba87a55f3ca
--- /dev/null
+++ b/Documentation/ABI/testing/sysfs-class-firmware
@@ -0,0 +1,77 @@
+What: /sys/class/firmware/.../data
+Date: July 2022
+KernelVersion: 5.19
+Contact: Russ Weight <russ.weight@linux.dev>
+Description: The data sysfs file is used for firmware-fallback and for
+ firmware uploads. Cat a firmware image to this sysfs file
+ after you echo 1 to the loading sysfs file. When the firmware
+ image write is complete, echo 0 to the loading sysfs file. This
+ sequence will signal the completion of the firmware write and
+ signal the lower-level driver that the firmware data is
+ available.
+
+What: /sys/class/firmware/.../cancel
+Date: July 2022
+KernelVersion: 5.19
+Contact: Russ Weight <russ.weight@linux.dev>
+Description: Write-only. For firmware uploads, write a "1" to this file to
+ request that the transfer of firmware data to the lower-level
+ device be canceled. This request will be rejected (EBUSY) if
+ the update cannot be canceled (e.g. a FLASH write is in
+ progress) or (ENODEV) if there is no firmware update in progress.
+
+What: /sys/class/firmware/.../error
+Date: July 2022
+KernelVersion: 5.19
+Contact: Russ Weight <russ.weight@linux.dev>
+Description: Read-only. Returns a string describing a failed firmware
+ upload. This string will be in the form of <STATUS>:<ERROR>,
+ where <STATUS> will be one of the status strings described
+ for the status sysfs file and <ERROR> will be one of the
+ following: "hw-error", "timeout", "user-abort", "device-busy",
+ "invalid-file-size", "read-write-error", "flash-wearout". The
+ error sysfs file is only meaningful when the current firmware
+ upload status is "idle". If this file is read while a firmware
+ transfer is in progress, then the read will fail with EBUSY.
+
+What: /sys/class/firmware/.../loading
+Date: July 2022
+KernelVersion: 5.19
+Contact: Russ Weight <russ.weight@linux.dev>
+Description: The loading sysfs file is used for both firmware-fallback and
+ for firmware uploads. Echo 1 onto the loading file to indicate
+ you are writing a firmware file to the data sysfs node. Echo
+ -1 onto this file to abort the data write or echo 0 onto this
+ file to indicate that the write is complete. For firmware
+ uploads, the zero value also triggers the transfer of the
+ firmware data to the lower-level device driver.
+
+What: /sys/class/firmware/.../remaining_size
+Date: July 2022
+KernelVersion: 5.19
+Contact: Russ Weight <russ.weight@linux.dev>
+Description: Read-only. For firmware upload, this file contains the size
+ of the firmware data that remains to be transferred to the
+ lower-level device driver. The size value is initialized to
+ the full size of the firmware image that was previously
+ written to the data sysfs file. This value is periodically
+ updated during the "transferring" phase of the firmware
+ upload.
+ Format: "%u".
+
+What: /sys/class/firmware/.../status
+Date: July 2022
+KernelVersion: 5.19
+Contact: Russ Weight <russ.weight@linux.dev>
+Description: Read-only. Returns a string describing the current status of
+ a firmware upload. The string will be one of the following:
+ idle, "receiving", "preparing", "transferring", "programming".
+
+What: /sys/class/firmware/.../timeout
+Date: July 2022
+KernelVersion: 5.19
+Contact: Russ Weight <russ.weight@linux.dev>
+Description: This file supports the timeout mechanism for firmware
+ fallback. This file has no affect on firmware uploads. For
+ more information on timeouts please see the documentation
+ for firmware fallback.
diff --git a/Documentation/ABI/testing/sysfs-class-firmware-attributes b/Documentation/ABI/testing/sysfs-class-firmware-attributes
index 13e31c6a0e9c..2713efa509b4 100644
--- a/Documentation/ABI/testing/sysfs-class-firmware-attributes
+++ b/Documentation/ABI/testing/sysfs-class-firmware-attributes
@@ -22,6 +22,11 @@ Description:
- integer: a range of numerical values
- string
+ HP specific types
+ -----------------
+ - ordered-list - a set of ordered list valid values
+
+
All attribute types support the following values:
current_value:
@@ -116,7 +121,7 @@ Description:
<value>[ForceIf:<attribute>=<value>]
<value>[ForceIfNot:<attribute>=<value>]
- For example:
+ For example::
LegacyOrom/dell_value_modifier has value:
Disabled[ForceIf:SecureBoot=Enabled]
@@ -126,6 +131,21 @@ Description:
value will not be effective through sysfs until this rule is
met.
+ HP specific class extensions
+ ------------------------------
+
+ On HP systems the following additional attributes are available:
+
+ "ordered-list"-type specific properties:
+
+ elements:
+ A file that can be read to obtain the possible
+ list of values of the <attr>. Values are separated using
+ semi-colon (``;``) and listed according to their priority.
+ An element listed first has the highest priority. Writing
+ the list in a different order to current_value alters
+ the priority order for the particular attribute.
+
What: /sys/class/firmware-attributes/*/authentication/
Date: February 2021
KernelVersion: 5.11
@@ -173,7 +193,7 @@ Description:
mechanism:
The means of authentication. This attribute is mandatory.
- Only supported type currently is "password".
+ Supported types are "password" or "certificate".
max_password_length:
A file that can be read to obtain the
@@ -206,13 +226,13 @@ Description:
Drivers may emit a CHANGE uevent when a password is set or unset
userspace may check it again.
- On Dell and Lenovo systems, if Admin password is set, then all BIOS attributes
+ On Dell, Lenovo and HP systems, if Admin password is set, then all BIOS attributes
require password validation.
On Lenovo systems if you change the Admin password the new password is not active until
the next boot.
Lenovo specific class extensions
- ------------------------------
+ --------------------------------
On Lenovo systems the following additional settings are available:
@@ -243,9 +263,68 @@ Description:
index:
Used with HDD and NVME authentication to set the drive index
- that is being referenced (e.g hdd0, hdd1 etc)
- This attribute defaults to device 0.
+ that is being referenced (e.g hdd1, hdd2 etc)
+ This attribute defaults to device 1.
+
+ certificate, signature, save_signature:
+ These attributes are used for certificate based authentication. This is
+ used in conjunction with a signing server as an alternative to password
+ based authentication.
+ The user writes to the attribute(s) with a BASE64 encoded string obtained
+ from the signing server.
+ The attributes can be displayed to check the stored value.
+
+ Some usage examples:
+
+ Installing a certificate to enable feature::
+
+ echo "supervisor password" > authentication/Admin/current_password
+ echo "signed certificate" > authentication/Admin/certificate
+
+ Updating the installed certificate::
+
+ echo "signature" > authentication/Admin/signature
+ echo "signed certificate" > authentication/Admin/certificate
+
+ Removing the installed certificate::
+
+ echo "signature" > authentication/Admin/signature
+ echo "" > authentication/Admin/certificate
+
+ Changing a BIOS setting::
+
+ echo "signature" > authentication/Admin/signature
+ echo "save signature" > authentication/Admin/save_signature
+ echo Enable > attribute/PasswordBeep/current_value
+
+ You cannot enable certificate authentication if a supervisor password
+ has not been set.
+ Clearing the certificate results in no bios-admin authentication method
+ being configured allowing anyone to make changes.
+ After any of these operations the system must reboot for the changes to
+ take effect.
+ Admin and System certificates are supported from 2025 systems onward.
+ certificate_thumbprint:
+ Read only attribute used to display the MD5, SHA1 and SHA256 thumbprints
+ for the certificate installed in the BIOS.
+
+ certificate_to_password:
+ Write only attribute used to switch from certificate based authentication
+ back to password based.
+ Usage::
+
+ echo "signature" > authentication/Admin/signature
+ echo "password" > authentication/Admin/certificate_to_password
+
+ HP specific class extensions
+ --------------------------------
+
+ On HP systems the following additional settings are available:
+
+ role: enhanced-bios-auth:
+ This role is specific to Secure Platform Management (SPM) attribute.
+ It requires configuring an endorsement (kek) and signing certificate (sk).
What: /sys/class/firmware-attributes/*/attributes/pending_reboot
@@ -262,7 +341,7 @@ Description:
== =========================================
0 All BIOS attributes setting are current
1 A reboot is necessary to get pending BIOS
- attribute changes applied
+ attribute changes applied
== =========================================
Note, userspace applications need to follow below steps for efficient
@@ -300,11 +379,41 @@ Description:
# echo "factory" > /sys/class/firmware-attributes/*/device/attributes/reset_bios
# cat /sys/class/firmware-attributes/*/device/attributes/reset_bios
- # builtinsafe lastknowngood [factory] custom
+ builtinsafe lastknowngood [factory] custom
Note that any changes to this attribute requires a reboot
for changes to take effect.
+What: /sys/class/firmware-attributes/*/attributes/save_settings
+Date: August 2023
+KernelVersion: 6.6
+Contact: Mark Pearson <mpearson-lenovo@squebb.ca>
+Description:
+ On Lenovo platforms there is a limitation in the number of times an attribute can be
+ saved. This is an architectural limitation and it limits the number of attributes
+ that can be modified to 48.
+ A solution for this is instead of the attribute being saved after every modification,
+ to allow a user to bulk set the attributes, and then trigger a final save. This allows
+ unlimited attributes.
+
+ Read the attribute to check what save mode is enabled (single or bulk).
+ E.g:
+ # cat /sys/class/firmware-attributes/thinklmi/attributes/save_settings
+ single
+
+ Write the attribute with 'bulk' to enable bulk save mode.
+ Write the attribute with 'single' to enable saving, after every attribute set.
+ The default setting is single mode.
+ E.g:
+ # echo bulk > /sys/class/firmware-attributes/thinklmi/attributes/save_settings
+
+ When in bulk mode write 'save' to trigger a save of all currently modified attributes.
+ Note, once a save has been triggered, in bulk mode, attributes can no longer be set and
+ will return a permissions error. This is to prevent users hitting the 48+ save limitation
+ (which requires entering the BIOS to clear the error condition)
+ E.g:
+ # echo save > /sys/class/firmware-attributes/thinklmi/attributes/save_settings
+
What: /sys/class/firmware-attributes/*/attributes/debug_cmd
Date: July 2021
KernelVersion: 5.14
@@ -315,3 +424,71 @@ Description:
use it to enable extra debug attributes or BIOS features for testing purposes.
Note that any changes to this attribute requires a reboot for changes to take effect.
+
+
+ HP specific class extensions - Secure Platform Manager (SPM)
+ --------------------------------
+
+What: /sys/class/firmware-attributes/*/authentication/SPM/kek
+Date: March 2023
+KernelVersion: 5.18
+Contact: "Jorge Lopez" <jorge.lopez2@hp.com>
+Description:
+ 'kek' Key-Encryption-Key is a write-only file that can be used to configure the
+ RSA public key that will be used by the BIOS to verify
+ signatures when setting the signing key. When written,
+ the bytes should correspond to the KEK certificate
+ (x509 .DER format containing an OU). The size of the
+ certificate must be less than or equal to 4095 bytes.
+
+What: /sys/class/firmware-attributes/*/authentication/SPM/sk
+Date: March 2023
+KernelVersion: 5.18
+Contact: "Jorge Lopez" <jorge.lopez2@hp.com>
+Description:
+ 'sk' Signature Key is a write-only file that can be used to configure the RSA
+ public key that will be used by the BIOS to verify signatures
+ when configuring BIOS settings and security features. When
+ written, the bytes should correspond to the modulus of the
+ public key. The exponent is assumed to be 0x10001.
+
+What: /sys/class/firmware-attributes/*/authentication/SPM/status
+Date: March 2023
+KernelVersion: 5.18
+Contact: "Jorge Lopez" <jorge.lopez2@hp.com>
+Description:
+ 'status' is a read-only file that returns ASCII text in JSON format reporting
+ the status information.
+
+ "State": "not provisioned | provisioned | provisioning in progress",
+ "Version": "Major.Minor",
+ "Nonce": <16-bit unsigned number display in base 10>,
+ "FeaturesInUse": <16-bit unsigned number display in base 10>,
+ "EndorsementKeyMod": "<256 bytes in base64>",
+ "SigningKeyMod": "<256 bytes in base64>"
+
+What: /sys/class/firmware-attributes/*/attributes/Sure_Start/audit_log_entries
+Date: March 2023
+KernelVersion: 5.18
+Contact: "Jorge Lopez" <jorge.lopez2@hp.com>
+Description:
+ 'audit_log_entries' is a read-only file that returns the events in the log.
+
+ Audit log entry format
+
+ Byte 0-15: Requested Audit Log entry (Each Audit log is 16 bytes)
+ Byte 16-127: Unused
+
+What: /sys/class/firmware-attributes/*/attributes/Sure_Start/audit_log_entry_count
+Date: March 2023
+KernelVersion: 5.18
+Contact: "Jorge Lopez" <jorge.lopez2@hp.com>
+Description:
+ 'audit_log_entry_count' is a read-only file that returns the number of existing
+ audit log events available to be read. Values are separated using comma. (``,``)
+
+ [No of entries],[log entry size],[Max number of entries supported]
+
+ log entry size identifies audit log size for the current BIOS version.
+ The current size is 16 bytes but it can be up to 128 bytes long in future BIOS
+ versions.
diff --git a/Documentation/ABI/testing/sysfs-class-hwmon b/Documentation/ABI/testing/sysfs-class-hwmon
index 1f20687def44..cfd0d0bab483 100644
--- a/Documentation/ABI/testing/sysfs-class-hwmon
+++ b/Documentation/ABI/testing/sysfs-class-hwmon
@@ -9,6 +9,14 @@ Description:
RO
+What: /sys/class/hwmon/hwmonX/label
+Description:
+ A descriptive label that allows to uniquely identify a
+ device within the system.
+ The contents of the label are free-form.
+
+ RO
+
What: /sys/class/hwmon/hwmonX/update_interval
Description:
The interval at which the chip will update readings.
@@ -141,6 +149,15 @@ Description:
RW
+What: /sys/class/hwmon/hwmonX/inY_fault
+Description:
+ Reports a voltage hard failure (eg: shorted component)
+
+ - 1: Failed
+ - 0: Ok
+
+ RO
+
What: /sys/class/hwmon/hwmonX/cpuY_vid
Description:
CPU core reference voltage.
@@ -268,6 +285,15 @@ Description:
RW
+What: /sys/class/hwmon/hwmonX/fanY_fault
+Description:
+ Reports if a fan has reported failure.
+
+ - 1: Failed
+ - 0: Ok
+
+ RO
+
What: /sys/class/hwmon/hwmonX/pwmY
Description:
Pulse width modulation fan control.
@@ -364,6 +390,15 @@ Description:
RW
+What: /sys/class/hwmon/hwmonX/tempY_max_alarm
+Description:
+ Maximum temperature alarm flag.
+
+ - 0: OK
+ - 1: temperature has reached tempY_max
+
+ RO
+
What: /sys/class/hwmon/hwmonX/tempY_min
Description:
Temperature min value.
@@ -372,6 +407,15 @@ Description:
RW
+What: /sys/class/hwmon/hwmonX/tempY_min_alarm
+Description:
+ Minimum temperature alarm flag.
+
+ - 0: OK
+ - 1: temperature has reached tempY_min
+
+ RO
+
What: /sys/class/hwmon/hwmonX/tempY_max_hyst
Description:
Temperature hysteresis value for max limit.
@@ -417,12 +461,7 @@ Description:
- 0: OK
- 1: temperature has reached tempY_crit
- RW
-
- Contrary to regular alarm flags which clear themselves
- automatically when read, this one sticks until cleared by
- the user. This is done by writing 0 to the file. Writing
- other values is unsupported.
+ RO
What: /sys/class/hwmon/hwmonX/tempY_crit_hyst
Description:
@@ -445,6 +484,15 @@ Description:
RW
+What: /sys/class/hwmon/hwmonX/tempY_emergency_alarm
+Description:
+ Emergency high temperature alarm flag.
+
+ - 0: OK
+ - 1: temperature has reached tempY_emergency
+
+ RO
+
What: /sys/class/hwmon/hwmonX/tempY_emergency_hyst
Description:
Temperature hysteresis value for emergency limit.
@@ -870,15 +918,15 @@ Description:
RW
-What: /sys/class/hwmon/hwmonX/humidityY_input
+What: /sys/class/hwmon/hwmonX/humidityY_alarm
Description:
- Humidity
+ Humidity limit detection
- Unit: milli-percent (per cent mille, pcm)
+ - 0: OK
+ - 1: Humidity limit has been reached
RO
-
What: /sys/class/hwmon/hwmonX/humidityY_enable
Description:
Enable or disable the sensors
@@ -891,6 +939,92 @@ Description:
RW
+What: /sys/class/hwmon/hwmonX/humidityY_fault
+Description:
+ Reports a humidity sensor failure.
+
+ - 1: Failed
+ - 0: Ok
+
+ RO
+
+What: /sys/class/hwmon/hwmonX/humidityY_input
+Description:
+ Humidity
+
+ Unit: milli-percent (per cent mille, pcm)
+
+ RO
+
+What: /sys/class/hwmon/hwmonX/humidityY_label
+Description:
+ Suggested humidity channel label.
+
+ Text string
+
+ Should only be created if the driver has hints about what
+ this humidity channel is being used for, and user-space
+ doesn't. In all other cases, the label is provided by
+ user-space.
+
+ RO
+
+What: /sys/class/hwmon/hwmonX/humidityY_max
+Description:
+ Humidity max value.
+
+ Unit: milli-percent (per cent mille, pcm)
+
+ RW
+
+What: /sys/class/hwmon/hwmonX/humidityY_max_alarm
+Description:
+ Maximum humidity detection
+
+ - 0: OK
+ - 1: Maximum humidity detected
+
+ RO
+
+What: /sys/class/hwmon/hwmonX/humidityY_max_hyst
+Description:
+ Humidity hysteresis value for max limit.
+
+ Unit: milli-percent (per cent mille, pcm)
+
+ Must be reported as an absolute humidity, NOT a delta
+ from the max value.
+
+ RW
+
+What: /sys/class/hwmon/hwmonX/humidityY_min
+Description:
+ Humidity min value.
+
+ Unit: milli-percent (per cent mille, pcm)
+
+ RW
+
+What: /sys/class/hwmon/hwmonX/humidityY_min_alarm
+Description:
+ Minimum humidity detection
+
+ - 0: OK
+ - 1: Minimum humidity detected
+
+ RO
+
+What: /sys/class/hwmon/hwmonX/humidityY_min_hyst
+Description:
+ Humidity hysteresis value for min limit.
+
+ Unit: milli-percent (per cent mille, pcm)
+
+ Must be reported as an absolute humidity, NOT a delta
+ from the min value.
+
+ RW
+
What: /sys/class/hwmon/hwmonX/humidityY_rated_min
Description:
Minimum rated humidity.
@@ -930,3 +1064,12 @@ Description:
- 1: enable
RW
+
+What: /sys/class/hwmon/hwmonX/device/pec
+Description:
+ PEC support on I2C devices
+
+ - 0, off, n: disable
+ - 1, on, y: enable
+
+ RW
diff --git a/Documentation/ABI/testing/sysfs-class-intel_pmt-features b/Documentation/ABI/testing/sysfs-class-intel_pmt-features
new file mode 100644
index 000000000000..cddb30e5bdf6
--- /dev/null
+++ b/Documentation/ABI/testing/sysfs-class-intel_pmt-features
@@ -0,0 +1,134 @@
+What: /sys/class/intel_pmt/features-<PCI BDF>/
+Date: 2025-04-24
+KernelVersion: 6.16
+Contact: david.e.box@linux.intel.com
+Description:
+ The `features-<PCI BDF>/` directory represents the "features"
+ capability exposed by Intel PMT (Platform Monitoring Technology)
+ for the given PCI device.
+
+ Each directory corresponds to a PMT feature and contains
+ attributes describing the available telemetry, monitoring, or
+ control functionalities.
+
+Directory Structure:
+
+ /sys/class/intel_pmt/features-<PCI BDF>/
+ ├── accelerator_telemetry/ # Per-accelerator telemetry data
+ ├── crash_log/ # Contains system crash telemetry logs
+ ├── per_core_environment_telemetry/ # Environmental telemetry per core
+ ├── per_core_performance_telemetry/ # Performance telemetry per core
+ ├── per_rmid_energy_telemetry/ # Energy telemetry for RMIDs
+ ├── per_rmid_perf_telemetry/ # Performance telemetry for RMIDs
+ ├── tpmi_control/ # TPMI-related controls and telemetry
+ ├── tracing/ # PMT tracing features
+ └── uncore_telemetry/ # Uncore telemetry data
+
+Common Files (Present in all feature directories):
+
+ caps
+ - Read-only
+ - Lists available capabilities for this feature.
+
+ guids
+ - Read-only
+ - Lists GUIDs associated with this feature.
+
+Additional Attributes (Conditional Presence):
+
+ max_command_size
+ - Read-only
+ - Present if the feature supports out-of-band MCTP access.
+ - Maximum supported MCTP command size for out-of-band PMT access (bytes).
+
+ max_stream_size
+ - Read-only
+ - Present if the feature supports out-of-band MCTP access.
+ - Maximum supported MCTP stream size (bytes).
+
+ min_watcher_period_ms
+ - Read-only
+ - Present if the feature supports the watcher API.
+ The watcher API provides a writable control interface that allows user
+ configuration of monitoring behavior, such as setting the sampling or
+ reporting interval.
+ - Minimum supported time period for the watcher interface (milliseconds).
+
+ num_rmids
+ - Read-only
+ - Present if the feature supports RMID (Resource Monitoring ID) telemetry.
+ RMIDs are identifiers used by hardware to track and report resource usage,
+ such as memory bandwidth or energy consumption, on a per-logical-entity
+ basis (e.g., per core, thread, or process group).
+ - Maximum number of RMIDs tracked simultaneously.
+
+Example:
+For a device with PCI BDF `0000:00:03.1`, the directory tree could look like:
+
+ /sys/class/intel_pmt/features-0000:00:03.1/
+ ├── accelerator_telemetry/
+ │ ├── caps
+ │ ├── guids
+ │ ├── max_command_size
+ │ ├── max_stream_size
+ │ ├── min_watcher_period_ms
+ ├── crash_log/
+ │ ├── caps
+ │ ├── guids
+ │ ├── max_command_size
+ │ ├── max_stream_size
+ ├── per_core_environment_telemetry/
+ │ ├── caps
+ │ ├── guids
+ │ ├── max_command_size
+ │ ├── max_stream_size
+ │ ├── min_watcher_period_ms
+ ├── per_rmid_energy_telemetry/
+ │ ├── caps
+ │ ├── guids
+ │ ├── max_command_size
+ │ ├── max_stream_size
+ │ ├── min_watcher_period_ms
+ │ ├── num_rmids
+ ├── tpmi_control/
+ │ ├── caps
+ │ ├── guids
+ ├── tracing/
+ │ ├── caps
+ │ ├── guids
+ ├── uncore_telemetry/
+ │ ├── caps
+ │ ├── guids
+ │ ├── max_command_size
+ │ ├── max_stream_size
+ │ ├── min_watcher_period_ms
+
+Notes:
+ - Some attributes are only present if the corresponding feature supports
+ the capability (e.g., `max_command_size` for MCTP-capable features).
+ - Features supporting RMIDs include `num_rmids`.
+ - Features supporting the watcher API include `min_watcher_period_ms`.
+ - The `caps` file provides additional information about the functionality
+ of the feature.
+
+Example 'caps' content for the 'tracing' feature:
+
+ /sys/class/intel_pmt/features-0000:00:03.1/
+ ├── tracing/
+ │ ├── caps
+
+ telemetry Available: No
+ watcher Available: Yes
+ crashlog Available: No
+ streaming Available: No
+ threashold Available: No
+ window Available: No
+ config Available: Yes
+ tracing Available: No
+ inband Available: Yes
+ oob Available: Yes
+ secure_chan Available: No
+ pmt_sp Available: Yes
+ pmt_sp_policy Available: Yes
+ mailbox Available: Yes
+ bios_lock Available: Yes
diff --git a/Documentation/ABI/testing/sysfs-class-led b/Documentation/ABI/testing/sysfs-class-led
index 2e24ac3bd7ef..0313b82644f2 100644
--- a/Documentation/ABI/testing/sysfs-class-led
+++ b/Documentation/ABI/testing/sysfs-class-led
@@ -72,6 +72,12 @@ Description:
/sys/class/leds/<led> once a given trigger is selected. For
their documentation see `sysfs-class-led-trigger-*`.
+ Writing "none" removes the trigger for this LED.
+
+ Writing "default" sets the trigger to the LED's default trigger
+ (which would often be configured in the device tree for the
+ hardware).
+
What: /sys/class/leds/<led>/inverted
Date: January 2011
KernelVersion: 2.6.38
diff --git a/Documentation/ABI/testing/sysfs-class-led-driver-aw200xx b/Documentation/ABI/testing/sysfs-class-led-driver-aw200xx
new file mode 100644
index 000000000000..6d4449cf9d71
--- /dev/null
+++ b/Documentation/ABI/testing/sysfs-class-led-driver-aw200xx
@@ -0,0 +1,5 @@
+What: /sys/class/leds/<led>/dim
+Date: May 2023
+Description: 64-level DIM current. If you write a negative value or
+ "auto", the dim will be calculated according to the
+ brightness.
diff --git a/Documentation/ABI/testing/sysfs-class-led-driver-turris-omnia b/Documentation/ABI/testing/sysfs-class-led-driver-turris-omnia
index c4d46970c1cf..369b4ae8be5f 100644
--- a/Documentation/ABI/testing/sysfs-class-led-driver-turris-omnia
+++ b/Documentation/ABI/testing/sysfs-class-led-driver-turris-omnia
@@ -12,3 +12,17 @@ Description: (RW) On the front panel of the Turris Omnia router there is also
able to change this setting from software.
Format: %i
+
+What: /sys/class/leds/<led>/device/gamma_correction
+Date: August 2023
+KernelVersion: 6.6
+Contact: Marek Behún <kabel@kernel.org>
+Description: (RW) Newer versions of the microcontroller firmware of the
+ Turris Omnia router support gamma correction for the RGB LEDs.
+ This feature can be enabled/disabled by writing to this file.
+
+ If the feature is not supported because the MCU firmware is too
+ old, the file always reads as 0, and writing to the file results
+ in the EOPNOTSUPP error.
+
+ Format: %i
diff --git a/Documentation/ABI/testing/sysfs-class-led-trigger-netdev b/Documentation/ABI/testing/sysfs-class-led-trigger-netdev
index 646540950e38..ed46b37ab8a2 100644
--- a/Documentation/ABI/testing/sysfs-class-led-trigger-netdev
+++ b/Documentation/ABI/testing/sysfs-class-led-trigger-netdev
@@ -13,6 +13,11 @@ Description:
Specifies the duration of the LED blink in milliseconds.
Defaults to 50 ms.
+ When offloaded is true, the interval value MUST be set to the
+ default value and cannot be changed.
+ Trying to set any value in this specific mode will return
+ an EINVAL error.
+
What: /sys/class/leds/<led>/link
Date: Dec 2017
KernelVersion: 4.16
@@ -39,6 +44,9 @@ Description:
If set to 1, the LED will blink for the milliseconds specified
in interval to signal transmission.
+ When offloaded is true, the blink interval is controlled by
+ hardware and won't reflect the value set in interval.
+
What: /sys/class/leds/<led>/rx
Date: Dec 2017
KernelVersion: 4.16
@@ -50,3 +58,135 @@ Description:
If set to 1, the LED will blink for the milliseconds specified
in interval to signal reception.
+
+ When offloaded is true, the blink interval is controlled by
+ hardware and won't reflect the value set in interval.
+
+What: /sys/class/leds/<led>/offloaded
+Date: Jun 2023
+KernelVersion: 6.5
+Contact: linux-leds@vger.kernel.org
+Description:
+ Communicate whether the LED trigger modes are offloaded to
+ hardware or whether software fallback is used.
+
+ If 0, the LED is using software fallback to blink.
+
+ If 1, the LED blinking in requested mode is offloaded to
+ hardware.
+
+What: /sys/class/leds/<led>/link_10
+Date: Jun 2023
+KernelVersion: 6.5
+Contact: linux-leds@vger.kernel.org
+Description:
+ Signal the link speed state of 10Mbps of the named network device.
+
+ If set to 0 (default), the LED's normal state is off.
+
+ If set to 1, the LED's normal state reflects the link state
+ speed of 10MBps of the named network device.
+ Setting this value also immediately changes the LED state.
+
+ Present only if the named network device supports 10Mbps link speed.
+
+What: /sys/class/leds/<led>/link_100
+Date: Jun 2023
+KernelVersion: 6.5
+Contact: linux-leds@vger.kernel.org
+Description:
+ Signal the link speed state of 100Mbps of the named network device.
+
+ If set to 0 (default), the LED's normal state is off.
+
+ If set to 1, the LED's normal state reflects the link state
+ speed of 100Mbps of the named network device.
+ Setting this value also immediately changes the LED state.
+
+ Present only if the named network device supports 100Mbps link speed.
+
+What: /sys/class/leds/<led>/link_1000
+Date: Jun 2023
+KernelVersion: 6.5
+Contact: linux-leds@vger.kernel.org
+Description:
+ Signal the link speed state of 1000Mbps of the named network device.
+
+ If set to 0 (default), the LED's normal state is off.
+
+ If set to 1, the LED's normal state reflects the link state
+ speed of 1000Mbps of the named network device.
+ Setting this value also immediately changes the LED state.
+
+ Present only if the named network device supports 1000Mbps link speed.
+
+What: /sys/class/leds/<led>/link_2500
+Date: Nov 2023
+KernelVersion: 6.8
+Contact: linux-leds@vger.kernel.org
+Description:
+ Signal the link speed state of 2500Mbps of the named network device.
+
+ If set to 0 (default), the LED's normal state is off.
+
+ If set to 1, the LED's normal state reflects the link state
+ speed of 2500Mbps of the named network device.
+ Setting this value also immediately changes the LED state.
+
+ Present only if the named network device supports 2500Mbps link speed.
+
+What: /sys/class/leds/<led>/link_5000
+Date: Nov 2023
+KernelVersion: 6.8
+Contact: linux-leds@vger.kernel.org
+Description:
+ Signal the link speed state of 5000Mbps of the named network device.
+
+ If set to 0 (default), the LED's normal state is off.
+
+ If set to 1, the LED's normal state reflects the link state
+ speed of 5000Mbps of the named network device.
+ Setting this value also immediately changes the LED state.
+
+ Present only if the named network device supports 5000Mbps link speed.
+
+What: /sys/class/leds/<led>/link_10000
+Date: Nov 2023
+KernelVersion: 6.8
+Contact: linux-leds@vger.kernel.org
+Description:
+ Signal the link speed state of 10000Mbps of the named network device.
+
+ If set to 0 (default), the LED's normal state is off.
+
+ If set to 1, the LED's normal state reflects the link state
+ speed of 10000Mbps of the named network device.
+ Setting this value also immediately changes the LED state.
+
+ Present only if the named network device supports 10000Mbps link speed.
+
+What: /sys/class/leds/<led>/half_duplex
+Date: Jun 2023
+KernelVersion: 6.5
+Contact: linux-leds@vger.kernel.org
+Description:
+ Signal the link half duplex state of the named network device.
+
+ If set to 0 (default), the LED's normal state is off.
+
+ If set to 1, the LED's normal state reflects the link half
+ duplex state of the named network device.
+ Setting this value also immediately changes the LED state.
+
+What: /sys/class/leds/<led>/full_duplex
+Date: Jun 2023
+KernelVersion: 6.5
+Contact: linux-leds@vger.kernel.org
+Description:
+ Signal the link full duplex state of the named network device.
+
+ If set to 0 (default), the LED's normal state is off.
+
+ If set to 1, the LED's normal state reflects the link full
+ duplex state of the named network device.
+ Setting this value also immediately changes the LED state.
diff --git a/Documentation/ABI/testing/sysfs-class-led-trigger-pattern b/Documentation/ABI/testing/sysfs-class-led-trigger-pattern
index 8c57d2780554..22f28f2e9ac4 100644
--- a/Documentation/ABI/testing/sysfs-class-led-trigger-pattern
+++ b/Documentation/ABI/testing/sysfs-class-led-trigger-pattern
@@ -12,6 +12,16 @@ Description:
The exact format is described in:
Documentation/devicetree/bindings/leds/leds-trigger-pattern.txt
+What: /sys/class/leds/<led>/hr_pattern
+Date: April 2024
+Description:
+ Specify a software pattern for the LED, that supports altering
+ the brightness for the specified duration with one software
+ timer. It can do gradual dimming and step change of brightness.
+
+ Unlike the /sys/class/leds/<led>/pattern, this attribute runs
+ a pattern on high-resolution timer (hrtimer).
+
What: /sys/class/leds/<led>/hw_pattern
Date: September 2018
KernelVersion: 4.20
diff --git a/Documentation/ABI/testing/sysfs-class-led-trigger-tty b/Documentation/ABI/testing/sysfs-class-led-trigger-tty
index 2bf6b24e781b..308fbc3627cd 100644
--- a/Documentation/ABI/testing/sysfs-class-led-trigger-tty
+++ b/Documentation/ABI/testing/sysfs-class-led-trigger-tty
@@ -1,6 +1,62 @@
-What: /sys/class/leds/<led>/ttyname
+What: /sys/class/leds/<tty_led>/ttyname
Date: Dec 2020
KernelVersion: 5.10
Contact: linux-leds@vger.kernel.org
Description:
Specifies the tty device name of the triggering tty
+
+What: /sys/class/leds/<tty_led>/rx
+Date: February 2024
+KernelVersion: 6.8
+Description:
+ Signal reception (rx) of data on the named tty device.
+ If set to 0, the LED will not blink on reception.
+ If set to 1 (default), the LED will blink on reception.
+
+What: /sys/class/leds/<tty_led>/tx
+Date: February 2024
+KernelVersion: 6.8
+Description:
+ Signal transmission (tx) of data on the named tty device.
+ If set to 0, the LED will not blink on transmission.
+ If set to 1 (default), the LED will blink on transmission.
+
+What: /sys/class/leds/<tty_led>/cts
+Date: February 2024
+KernelVersion: 6.8
+Description:
+ CTS = Clear To Send
+ DCE is ready to accept data from the DTE.
+ If the line state is detected, the LED is switched on.
+ If set to 0 (default), the LED will not evaluate CTS.
+ If set to 1, the LED will evaluate CTS.
+
+What: /sys/class/leds/<tty_led>/dsr
+Date: February 2024
+KernelVersion: 6.8
+Description:
+ DSR = Data Set Ready
+ DCE is ready to receive and send data.
+ If the line state is detected, the LED is switched on.
+ If set to 0 (default), the LED will not evaluate DSR.
+ If set to 1, the LED will evaluate DSR.
+
+What: /sys/class/leds/<tty_led>/dcd
+Date: February 2024
+KernelVersion: 6.8
+Description:
+ DCD = Data Carrier Detect
+ DTE is receiving a carrier from the DCE.
+ If the line state is detected, the LED is switched on.
+ If set to 0 (default), the LED will not evaluate CAR (DCD).
+ If set to 1, the LED will evaluate CAR (DCD).
+
+What: /sys/class/leds/<tty_led>/rng
+Date: February 2024
+KernelVersion: 6.8
+Description:
+ RNG = Ring Indicator
+ DCE has detected an incoming ring signal on the telephone
+ line. If the line state is detected, the LED is switched on.
+ If set to 0 (default), the LED will not evaluate RNG.
+ If set to 1, the LED will evaluate RNG.
diff --git a/Documentation/ABI/testing/sysfs-class-mtd b/Documentation/ABI/testing/sysfs-class-mtd
index 3bc7c0a95c92..f77fa4f6d465 100644
--- a/Documentation/ABI/testing/sysfs-class-mtd
+++ b/Documentation/ABI/testing/sysfs-class-mtd
@@ -39,7 +39,7 @@ KernelVersion: 2.6.29
Contact: linux-mtd@lists.infradead.org
Description:
Major and minor numbers of the character device corresponding
- to the read-only variant of thie MTD device (in
+ to the read-only variant of the MTD device (in
<major>:<minor> format). In this case <minor> will be odd.
What: /sys/class/mtd/mtdX/erasesize
diff --git a/Documentation/ABI/testing/sysfs-class-net b/Documentation/ABI/testing/sysfs-class-net
index 1419103d11f9..ebf21beba846 100644
--- a/Documentation/ABI/testing/sysfs-class-net
+++ b/Documentation/ABI/testing/sysfs-class-net
@@ -82,7 +82,7 @@ KernelVersion: 2.6.12
Contact: netdev@vger.kernel.org
Description:
Indicates the current physical link state of the interface.
- Posssible values are:
+ Possible values are:
== =====================
0 physical link is down
diff --git a/Documentation/ABI/testing/sysfs-class-net-peak_usb b/Documentation/ABI/testing/sysfs-class-net-peak_usb
new file mode 100644
index 000000000000..9e3d0bf4d4b2
--- /dev/null
+++ b/Documentation/ABI/testing/sysfs-class-net-peak_usb
@@ -0,0 +1,19 @@
+
+What: /sys/class/net/<iface>/peak_usb/can_channel_id
+Date: November 2022
+KernelVersion: 6.2
+Contact: Stephane Grosjean <s.grosjean@peak-system.com>
+Description:
+ PEAK PCAN-USB devices support user-configurable CAN channel
+ identifiers. Contrary to a USB serial number, these identifiers
+ are writable and can be set per CAN interface. This means that
+ if a USB device exports multiple CAN interfaces, each of them
+ can be assigned a unique channel ID.
+ This attribute provides read-only access to the currently
+ configured value of the channel identifier. Depending on the
+ device type, the identifier has a length of 8 or 32 bit. The
+ value read from this attribute is always an 8 digit 32 bit
+ hexadecimal value in big endian format. If the device only
+ supports an 8 bit identifier, the upper 24 bit of the value are
+ set to zero.
+
diff --git a/Documentation/ABI/testing/sysfs-class-net-phydev b/Documentation/ABI/testing/sysfs-class-net-phydev
index ac722dd5e694..31615c59bff9 100644
--- a/Documentation/ABI/testing/sysfs-class-net-phydev
+++ b/Documentation/ABI/testing/sysfs-class-net-phydev
@@ -26,6 +26,16 @@ Description:
This ID is used to match the device with the appropriate
driver.
+What: /sys/class/mdio_bus/<bus>/<device>/c45_phy_ids/mmd<n>_device_id
+Date: June 2025
+KernelVersion: 6.17
+Contact: netdev@vger.kernel.org
+Description:
+ This attribute contains the 32-bit PHY Identifier as reported
+ by the device during bus enumeration, encoded in hexadecimal.
+ These C45 IDs are used to match the device with the appropriate
+ driver. These files are invisible to the C22 device.
+
What: /sys/class/mdio_bus/<bus>/<device>/phy_interface
Date: February 2014
KernelVersion: 3.15
diff --git a/Documentation/ABI/testing/sysfs-class-net-qmi b/Documentation/ABI/testing/sysfs-class-net-qmi
index 47e6b9732337..b028f5bc86db 100644
--- a/Documentation/ABI/testing/sysfs-class-net-qmi
+++ b/Documentation/ABI/testing/sysfs-class-net-qmi
@@ -62,7 +62,7 @@ Description:
What: /sys/class/net/<iface>/qmi/pass_through
Date: January 2021
KernelVersion: 5.12
-Contact: Subash Abhinov Kasiviswanathan <subashab@codeaurora.org>
+Contact: Subash Abhinov Kasiviswanathan <quic_subashab@quicinc.com>
Description:
Boolean. Default: 'N'
diff --git a/Documentation/ABI/testing/sysfs-class-net-queues b/Documentation/ABI/testing/sysfs-class-net-queues
index 978b76358661..84aa25e0d14d 100644
--- a/Documentation/ABI/testing/sysfs-class-net-queues
+++ b/Documentation/ABI/testing/sysfs-class-net-queues
@@ -1,4 +1,4 @@
-What: /sys/class/<iface>/queues/rx-<queue>/rps_cpus
+What: /sys/class/net/<iface>/queues/rx-<queue>/rps_cpus
Date: March 2010
KernelVersion: 2.6.35
Contact: netdev@vger.kernel.org
@@ -8,7 +8,7 @@ Description:
network device queue. Possible values depend on the number
of available CPU(s) in the system.
-What: /sys/class/<iface>/queues/rx-<queue>/rps_flow_cnt
+What: /sys/class/net/<iface>/queues/rx-<queue>/rps_flow_cnt
Date: April 2010
KernelVersion: 2.6.35
Contact: netdev@vger.kernel.org
@@ -16,7 +16,7 @@ Description:
Number of Receive Packet Steering flows being currently
processed by this particular network device receive queue.
-What: /sys/class/<iface>/queues/tx-<queue>/tx_timeout
+What: /sys/class/net/<iface>/queues/tx-<queue>/tx_timeout
Date: November 2011
KernelVersion: 3.3
Contact: netdev@vger.kernel.org
@@ -24,7 +24,7 @@ Description:
Indicates the number of transmit timeout events seen by this
network interface transmit queue.
-What: /sys/class/<iface>/queues/tx-<queue>/tx_maxrate
+What: /sys/class/net/<iface>/queues/tx-<queue>/tx_maxrate
Date: March 2015
KernelVersion: 4.1
Contact: netdev@vger.kernel.org
@@ -32,17 +32,17 @@ Description:
A Mbps max-rate set for the queue, a value of zero means disabled,
default is disabled.
-What: /sys/class/<iface>/queues/tx-<queue>/xps_cpus
+What: /sys/class/net/<iface>/queues/tx-<queue>/xps_cpus
Date: November 2010
KernelVersion: 2.6.38
Contact: netdev@vger.kernel.org
Description:
Mask of the CPU(s) currently enabled to participate into the
Transmit Packet Steering packet processing flow for this
- network device transmit queue. Possible vaules depend on the
+ network device transmit queue. Possible values depend on the
number of available CPU(s) in the system.
-What: /sys/class/<iface>/queues/tx-<queue>/xps_rxqs
+What: /sys/class/net/<iface>/queues/tx-<queue>/xps_rxqs
Date: June 2018
KernelVersion: 4.18.0
Contact: netdev@vger.kernel.org
@@ -53,7 +53,7 @@ Description:
number of available receive queue(s) in the network device.
Default is disabled.
-What: /sys/class/<iface>/queues/tx-<queue>/byte_queue_limits/hold_time
+What: /sys/class/net/<iface>/queues/tx-<queue>/byte_queue_limits/hold_time
Date: November 2011
KernelVersion: 3.3
Contact: netdev@vger.kernel.org
@@ -62,7 +62,7 @@ Description:
of this particular network device transmit queue.
Default value is 1000.
-What: /sys/class/<iface>/queues/tx-<queue>/byte_queue_limits/inflight
+What: /sys/class/net/<iface>/queues/tx-<queue>/byte_queue_limits/inflight
Date: November 2011
KernelVersion: 3.3
Contact: netdev@vger.kernel.org
@@ -70,7 +70,7 @@ Description:
Indicates the number of bytes (objects) in flight on this
network device transmit queue.
-What: /sys/class/<iface>/queues/tx-<queue>/byte_queue_limits/limit
+What: /sys/class/net/<iface>/queues/tx-<queue>/byte_queue_limits/limit
Date: November 2011
KernelVersion: 3.3
Contact: netdev@vger.kernel.org
@@ -79,7 +79,7 @@ Description:
on this network device transmit queue. This value is clamped
to be within the bounds defined by limit_max and limit_min.
-What: /sys/class/<iface>/queues/tx-<queue>/byte_queue_limits/limit_max
+What: /sys/class/net/<iface>/queues/tx-<queue>/byte_queue_limits/limit_max
Date: November 2011
KernelVersion: 3.3
Contact: netdev@vger.kernel.org
@@ -88,7 +88,7 @@ Description:
queued on this network device transmit queue. See
include/linux/dynamic_queue_limits.h for the default value.
-What: /sys/class/<iface>/queues/tx-<queue>/byte_queue_limits/limit_min
+What: /sys/class/net/<iface>/queues/tx-<queue>/byte_queue_limits/limit_min
Date: November 2011
KernelVersion: 3.3
Contact: netdev@vger.kernel.org
@@ -96,3 +96,26 @@ Description:
Indicates the absolute minimum limit of bytes allowed to be
queued on this network device transmit queue. Default value is
0.
+
+What: /sys/class/net/<iface>/queues/tx-<queue>/byte_queue_limits/stall_thrs
+Date: Jan 2024
+KernelVersion: 6.9
+Contact: netdev@vger.kernel.org
+Description:
+ Tx completion stall detection threshold in ms. Kernel will
+ guarantee to detect all stalls longer than this threshold but
+ may also detect stalls longer than half of the threshold.
+
+What: /sys/class/net/<iface>/queues/tx-<queue>/byte_queue_limits/stall_cnt
+Date: Jan 2024
+KernelVersion: 6.9
+Contact: netdev@vger.kernel.org
+Description:
+ Number of detected Tx completion stalls.
+
+What: /sys/class/net/<iface>/queues/tx-<queue>/byte_queue_limits/stall_max
+Date: Jan 2024
+KernelVersion: 6.9
+Contact: netdev@vger.kernel.org
+Description:
+ Longest detected Tx completion stall. Write 0 to clear.
diff --git a/Documentation/ABI/testing/sysfs-class-net-statistics b/Documentation/ABI/testing/sysfs-class-net-statistics
index 55db27815361..53e508c6936a 100644
--- a/Documentation/ABI/testing/sysfs-class-net-statistics
+++ b/Documentation/ABI/testing/sysfs-class-net-statistics
@@ -1,4 +1,4 @@
-What: /sys/class/<iface>/statistics/collisions
+What: /sys/class/net/<iface>/statistics/collisions
Date: April 2005
KernelVersion: 2.6.12
Contact: netdev@vger.kernel.org
@@ -6,7 +6,7 @@ Description:
Indicates the number of collisions seen by this network device.
This value might not be relevant with all MAC layers.
-What: /sys/class/<iface>/statistics/multicast
+What: /sys/class/net/<iface>/statistics/multicast
Date: April 2005
KernelVersion: 2.6.12
Contact: netdev@vger.kernel.org
@@ -14,7 +14,7 @@ Description:
Indicates the number of multicast packets received by this
network device.
-What: /sys/class/<iface>/statistics/rx_bytes
+What: /sys/class/net/<iface>/statistics/rx_bytes
Date: April 2005
KernelVersion: 2.6.12
Contact: netdev@vger.kernel.org
@@ -23,7 +23,7 @@ Description:
See the network driver for the exact meaning of when this
value is incremented.
-What: /sys/class/<iface>/statistics/rx_compressed
+What: /sys/class/net/<iface>/statistics/rx_compressed
Date: April 2005
KernelVersion: 2.6.12
Contact: netdev@vger.kernel.org
@@ -32,7 +32,7 @@ Description:
network device. This value might only be relevant for interfaces
that support packet compression (e.g: PPP).
-What: /sys/class/<iface>/statistics/rx_crc_errors
+What: /sys/class/net/<iface>/statistics/rx_crc_errors
Date: April 2005
KernelVersion: 2.6.12
Contact: netdev@vger.kernel.org
@@ -41,7 +41,7 @@ Description:
by this network device. Note that the specific meaning might
depend on the MAC layer used by the interface.
-What: /sys/class/<iface>/statistics/rx_dropped
+What: /sys/class/net/<iface>/statistics/rx_dropped
Date: April 2005
KernelVersion: 2.6.12
Contact: netdev@vger.kernel.org
@@ -51,7 +51,7 @@ Description:
packet processing. See the network driver for the exact
meaning of this value.
-What: /sys/class/<iface>/statistics/rx_errors
+What: /sys/class/net/<iface>/statistics/rx_errors
Date: April 2005
KernelVersion: 2.6.12
Contact: netdev@vger.kernel.org
@@ -59,7 +59,7 @@ Description:
Indicates the number of receive errors on this network device.
See the network driver for the exact meaning of this value.
-What: /sys/class/<iface>/statistics/rx_fifo_errors
+What: /sys/class/net/<iface>/statistics/rx_fifo_errors
Date: April 2005
KernelVersion: 2.6.12
Contact: netdev@vger.kernel.org
@@ -68,7 +68,7 @@ Description:
network device. See the network driver for the exact
meaning of this value.
-What: /sys/class/<iface>/statistics/rx_frame_errors
+What: /sys/class/net/<iface>/statistics/rx_frame_errors
Date: April 2005
KernelVersion: 2.6.12
Contact: netdev@vger.kernel.org
@@ -78,7 +78,7 @@ Description:
on the MAC layer protocol used. See the network driver for
the exact meaning of this value.
-What: /sys/class/<iface>/statistics/rx_length_errors
+What: /sys/class/net/<iface>/statistics/rx_length_errors
Date: April 2005
KernelVersion: 2.6.12
Contact: netdev@vger.kernel.org
@@ -87,7 +87,7 @@ Description:
error, oversized or undersized. See the network driver for the
exact meaning of this value.
-What: /sys/class/<iface>/statistics/rx_missed_errors
+What: /sys/class/net/<iface>/statistics/rx_missed_errors
Date: April 2005
KernelVersion: 2.6.12
Contact: netdev@vger.kernel.org
@@ -96,7 +96,7 @@ Description:
due to lack of capacity in the receive side. See the network
driver for the exact meaning of this value.
-What: /sys/class/<iface>/statistics/rx_nohandler
+What: /sys/class/net/<iface>/statistics/rx_nohandler
Date: February 2016
KernelVersion: 4.6
Contact: netdev@vger.kernel.org
@@ -104,7 +104,7 @@ Description:
Indicates the number of received packets that were dropped on
an inactive device by the network core.
-What: /sys/class/<iface>/statistics/rx_over_errors
+What: /sys/class/net/<iface>/statistics/rx_over_errors
Date: April 2005
KernelVersion: 2.6.12
Contact: netdev@vger.kernel.org
@@ -114,7 +114,7 @@ Description:
(e.g: larger than MTU). See the network driver for the exact
meaning of this value.
-What: /sys/class/<iface>/statistics/rx_packets
+What: /sys/class/net/<iface>/statistics/rx_packets
Date: April 2005
KernelVersion: 2.6.12
Contact: netdev@vger.kernel.org
@@ -122,7 +122,7 @@ Description:
Indicates the total number of good packets received by this
network device.
-What: /sys/class/<iface>/statistics/tx_aborted_errors
+What: /sys/class/net/<iface>/statistics/tx_aborted_errors
Date: April 2005
KernelVersion: 2.6.12
Contact: netdev@vger.kernel.org
@@ -132,7 +132,7 @@ Description:
a medium collision). See the network driver for the exact
meaning of this value.
-What: /sys/class/<iface>/statistics/tx_bytes
+What: /sys/class/net/<iface>/statistics/tx_bytes
Date: April 2005
KernelVersion: 2.6.12
Contact: netdev@vger.kernel.org
@@ -143,7 +143,7 @@ Description:
transmitted packets or all packets that have been queued for
transmission.
-What: /sys/class/<iface>/statistics/tx_carrier_errors
+What: /sys/class/net/<iface>/statistics/tx_carrier_errors
Date: April 2005
KernelVersion: 2.6.12
Contact: netdev@vger.kernel.org
@@ -152,7 +152,7 @@ Description:
because of carrier errors (e.g: physical link down). See the
network driver for the exact meaning of this value.
-What: /sys/class/<iface>/statistics/tx_compressed
+What: /sys/class/net/<iface>/statistics/tx_compressed
Date: April 2005
KernelVersion: 2.6.12
Contact: netdev@vger.kernel.org
@@ -161,7 +161,7 @@ Description:
this might only be relevant for devices that support
compression (e.g: PPP).
-What: /sys/class/<iface>/statistics/tx_dropped
+What: /sys/class/net/<iface>/statistics/tx_dropped
Date: April 2005
KernelVersion: 2.6.12
Contact: netdev@vger.kernel.org
@@ -170,7 +170,7 @@ Description:
See the driver for the exact reasons as to why the packets were
dropped.
-What: /sys/class/<iface>/statistics/tx_errors
+What: /sys/class/net/<iface>/statistics/tx_errors
Date: April 2005
KernelVersion: 2.6.12
Contact: netdev@vger.kernel.org
@@ -179,7 +179,7 @@ Description:
a network device. See the driver for the exact reasons as to
why the packets were dropped.
-What: /sys/class/<iface>/statistics/tx_fifo_errors
+What: /sys/class/net/<iface>/statistics/tx_fifo_errors
Date: April 2005
KernelVersion: 2.6.12
Contact: netdev@vger.kernel.org
@@ -188,7 +188,7 @@ Description:
FIFO error. See the driver for the exact reasons as to why the
packets were dropped.
-What: /sys/class/<iface>/statistics/tx_heartbeat_errors
+What: /sys/class/net/<iface>/statistics/tx_heartbeat_errors
Date: April 2005
KernelVersion: 2.6.12
Contact: netdev@vger.kernel.org
@@ -197,7 +197,7 @@ Description:
reported as heartbeat errors. See the driver for the exact
reasons as to why the packets were dropped.
-What: /sys/class/<iface>/statistics/tx_packets
+What: /sys/class/net/<iface>/statistics/tx_packets
Date: April 2005
KernelVersion: 2.6.12
Contact: netdev@vger.kernel.org
@@ -206,7 +206,7 @@ Description:
device. See the driver for whether this reports the number of all
attempted or successful transmissions.
-What: /sys/class/<iface>/statistics/tx_window_errors
+What: /sys/class/net/<iface>/statistics/tx_window_errors
Date: April 2005
KernelVersion: 2.6.12
Contact: netdev@vger.kernel.org
diff --git a/Documentation/ABI/testing/sysfs-class-pktcdvd b/Documentation/ABI/testing/sysfs-class-pktcdvd
deleted file mode 100644
index ba1ce626591d..000000000000
--- a/Documentation/ABI/testing/sysfs-class-pktcdvd
+++ /dev/null
@@ -1,97 +0,0 @@
-sysfs interface
----------------
-The pktcdvd module (packet writing driver) creates the following files in the
-sysfs: (<devid> is in the format major:minor)
-
-What: /sys/class/pktcdvd/add
-What: /sys/class/pktcdvd/remove
-What: /sys/class/pktcdvd/device_map
-Date: Oct. 2006
-KernelVersion: 2.6.20
-Contact: Thomas Maier <balagi@justmail.de>
-Description:
-
- ========== ==============================================
- add (WO) Write a block device id (major:minor) to
- create a new pktcdvd device and map it to the
- block device.
-
- remove (WO) Write the pktcdvd device id (major:minor)
- to remove the pktcdvd device.
-
- device_map (RO) Shows the device mapping in format:
- pktcdvd[0-7] <pktdevid> <blkdevid>
- ========== ==============================================
-
-
-What: /sys/class/pktcdvd/pktcdvd[0-7]/dev
-What: /sys/class/pktcdvd/pktcdvd[0-7]/uevent
-Date: Oct. 2006
-KernelVersion: 2.6.20
-Contact: Thomas Maier <balagi@justmail.de>
-Description:
- dev: (RO) Device id
-
- uevent: (WO) To send a uevent
-
-
-What: /sys/class/pktcdvd/pktcdvd[0-7]/stat/packets_started
-What: /sys/class/pktcdvd/pktcdvd[0-7]/stat/packets_finished
-What: /sys/class/pktcdvd/pktcdvd[0-7]/stat/kb_written
-What: /sys/class/pktcdvd/pktcdvd[0-7]/stat/kb_read
-What: /sys/class/pktcdvd/pktcdvd[0-7]/stat/kb_read_gather
-What: /sys/class/pktcdvd/pktcdvd[0-7]/stat/reset
-Date: Oct. 2006
-KernelVersion: 2.6.20
-Contact: Thomas Maier <balagi@justmail.de>
-Description:
- packets_started: (RO) Number of started packets.
-
- packets_finished: (RO) Number of finished packets.
-
- kb_written: (RO) kBytes written.
-
- kb_read: (RO) kBytes read.
-
- kb_read_gather: (RO) kBytes read to fill write packets.
-
- reset: (WO) Write any value to it to reset
- pktcdvd device statistic values, like
- bytes read/written.
-
-
-What: /sys/class/pktcdvd/pktcdvd[0-7]/write_queue/size
-What: /sys/class/pktcdvd/pktcdvd[0-7]/write_queue/congestion_off
-What: /sys/class/pktcdvd/pktcdvd[0-7]/write_queue/congestion_on
-Date: Oct. 2006
-KernelVersion: 2.6.20
-Contact: Thomas Maier <balagi@justmail.de>
-Description:
- ============== ================================================
- size (RO) Contains the size of the bio write queue.
-
- congestion_off (RW) If bio write queue size is below this mark,
- accept new bio requests from the block layer.
-
- congestion_on (RW) If bio write queue size is higher as this
- mark, do no longer accept bio write requests
- from the block layer and wait till the pktcdvd
- device has processed enough bio's so that bio
- write queue size is below congestion off mark.
- A value of <= 0 disables congestion control.
- ============== ================================================
-
-
-Example:
---------
-To use the pktcdvd sysfs interface directly, you can do::
-
- # create a new pktcdvd device mapped to /dev/hdc
- echo "22:0" >/sys/class/pktcdvd/add
- cat /sys/class/pktcdvd/device_map
- # assuming device pktcdvd0 was created, look at stat's
- cat /sys/class/pktcdvd/pktcdvd0/stat/kb_written
- # print the device id of the mapped block device
- fgrep pktcdvd0 /sys/class/pktcdvd/device_map
- # remove device, using pktcdvd0 device id 253:0
- echo "253:0" >/sys/class/pktcdvd/remove
diff --git a/Documentation/ABI/testing/sysfs-class-platform-profile b/Documentation/ABI/testing/sysfs-class-platform-profile
new file mode 100644
index 000000000000..fcab26894ec3
--- /dev/null
+++ b/Documentation/ABI/testing/sysfs-class-platform-profile
@@ -0,0 +1,50 @@
+What: /sys/class/platform-profile/platform-profile-X/name
+Date: March 2025
+KernelVersion: 6.14
+Description: Name of the class device given by the driver.
+
+ RO
+
+What: /sys/class/platform-profile/platform-profile-X/choices
+Date: March 2025
+KernelVersion: 6.14
+Description: This file contains a space-separated list of profiles supported
+ for this device.
+
+ Drivers must use the following standard profile-names:
+
+ ==================== ========================================
+ low-power Low power consumption
+ cool Cooler operation
+ quiet Quieter operation
+ balanced Balance between low power consumption
+ and performance
+ balanced-performance Balance between performance and low
+ power consumption with a slight bias
+ towards performance
+ performance High performance operation
+ max-power Higher performance operation that may exceed
+ internal battery draw limits when on AC power
+ custom Driver defined custom profile
+ ==================== ========================================
+
+ RO
+
+What: /sys/class/platform-profile/platform-profile-X/profile
+Date: March 2025
+KernelVersion: 6.14
+Description: Reading this file gives the current selected profile for this
+ device. Writing this file with one of the strings from
+ platform_profile_choices changes the profile to the new value.
+
+ This file can be monitored for changes by polling for POLLPRI,
+ POLLPRI will be signaled on any changes, independent of those
+ changes coming from a userspace write; or coming from another
+ source such as e.g. a hotkey triggered profile change handled
+ either directly by the embedded-controller or fully handled
+ inside the kernel.
+
+ This file may also emit the string 'custom' to indicate
+ that the driver is using a driver defined custom profile.
+
+ RW
diff --git a/Documentation/ABI/testing/sysfs-class-power b/Documentation/ABI/testing/sysfs-class-power
index fde21d900420..4b21d5d23251 100644
--- a/Documentation/ABI/testing/sysfs-class-power
+++ b/Documentation/ABI/testing/sysfs-class-power
@@ -364,7 +364,10 @@ Date: April 2019
Contact: linux-pm@vger.kernel.org
Description:
Represents a battery percentage level, above which charging will
- stop.
+ stop. Not all hardware is capable of setting this to an arbitrary
+ percentage. Drivers will round written values to the nearest
+ supported value. Reading back the value will show the actual
+ threshold set by the driver.
Access: Read, Write
@@ -374,19 +377,59 @@ What: /sys/class/power_supply/<supply_name>/charge_type
Date: July 2009
Contact: linux-pm@vger.kernel.org
Description:
- Represents the type of charging currently being applied to the
- battery. "Trickle", "Fast", and "Standard" all mean different
- charging speeds. "Adaptive" means that the charger uses some
- algorithm to adjust the charge rate dynamically, without
- any user configuration required. "Custom" means that the charger
- uses the charge_control_* properties as configuration for some
- different algorithm.
+ Select the charging algorithm to use for a battery.
+
+ Standard:
+ Fully charge the battery at a moderate rate.
+ Fast:
+ Quickly charge the battery using fast-charge
+ technology. This is typically harder on the battery
+ than standard charging and may lower its lifespan.
+ Trickle:
+ Users who primarily operate the system while
+ plugged into an external power source can extend
+ battery life with this mode. Vendor tooling may
+ call this "Primarily AC Use".
+ Adaptive:
+ Automatically optimize battery charge rate based
+ on typical usage pattern.
+ Custom:
+ Use the charge_control_* properties to determine
+ when to start and stop charging. Advanced users
+ can use this to drastically extend battery life.
+ Long Life:
+ The charger reduces its charging rate in order to
+ prolong the battery health.
+ Bypass:
+ The charger bypasses the charging path around the
+ integrated converter allowing for a "smart" wall
+ adaptor to perform the power conversion externally.
Access: Read, Write
+ Reading this returns the current active value, e.g. 'Standard'.
+ Check charge_types to get the values supported by the battery.
+
Valid values:
"Unknown", "N/A", "Trickle", "Fast", "Standard",
- "Adaptive", "Custom"
+ "Adaptive", "Custom", "Long Life", "Bypass"
+
+What: /sys/class/power_supply/<supply_name>/charge_types
+Date: December 2024
+Contact: linux-pm@vger.kernel.org
+Description:
+ Identical to charge_type but reading returns a list of supported
+ charge-types with the currently active type surrounded by square
+ brackets, e.g.: "Fast [Standard] Long_Life".
+
+ power_supply class devices may support both charge_type and
+ charge_types for backward compatibility. In this case both will
+ always have the same active value and the active value can be
+ changed by writing either property.
+
+ Note charge-types which contain a space such as "Long Life" will
+ have the space replaced by a '_' resulting in e.g. "Long_Life".
+ When writing charge-types both variants are accepted.
What: /sys/class/power_supply/<supply_name>/charge_term_current
Date: July 2014
@@ -410,10 +453,10 @@ Description:
Valid values:
"Unknown", "Good", "Overheat", "Dead",
- "Over voltage", "Unspecified failure", "Cold",
+ "Over voltage", "Under voltage", "Unspecified failure", "Cold",
"Watchdog timer expire", "Safety timer expire",
"Over current", "Calibration required", "Warm",
- "Cool", "Hot", "No battery"
+ "Cool", "Hot", "No battery", "Blown fuse", "Cell imbalance"
What: /sys/class/power_supply/<supply_name>/precharge_current
Date: June 2017
@@ -430,7 +473,8 @@ What: /sys/class/power_supply/<supply_name>/present
Date: May 2007
Contact: linux-pm@vger.kernel.org
Description:
- Reports whether a battery is present or not in the system.
+ Reports whether a battery is present or not in the system. If the
+ property does not exist, the battery is considered to be present.
Access: Read
@@ -464,10 +508,12 @@ Description:
Access: Read, Write
Valid values:
- ================ ====================================
- auto: Charge normally, respect thresholds
- inhibit-charge: Do not charge while AC is attached
- force-discharge: Force discharge while AC is attached
+ ===================== ========================================
+ auto: Charge normally, respect thresholds
+ inhibit-charge: Do not charge while AC is attached
+ inhibit-charge-awake: inhibit-charge only when device is awake
+ force-discharge: Force discharge while AC is attached
+ ===================== ========================================
What: /sys/class/power_supply/<supply_name>/technology
Date: May 2007
@@ -507,6 +553,43 @@ Description:
Integer > 0: representing full cycles
Integer = 0: cycle_count info is not available
+What: /sys/class/power_supply/<supply_name>/internal_resistance
+Date: August 2025
+Contact: linux-arm-msm@vger.kernel.org
+Description:
+ Represent the battery's internal resistance, often referred
+ to as Equivalent Series Resistance (ESR). It is a dynamic
+ parameter that reflects the opposition to current flow within
+ the cell. It is not a fixed value but varies significantly
+ based on several operational conditions, including battery
+ state of charge (SoC), temperature, and whether the battery
+ is in a charging or discharging state.
+
+ Access: Read
+
+ Valid values: Represented in microohms
+
+What: /sys/class/power_supply/<supply_name>/state_of_health
+Date: August 2025
+Contact: linux-arm-msm@vger.kernel.org
+Description:
+ The state_of_health parameter quantifies the overall condition
+ of a battery as a percentage, reflecting its ability to deliver
+ rated performance relative to its original specifications. It is
+ dynamically computed using a combination of learned capacity
+ and impedance-based degradation indicators, both of which evolve
+ over the battery's lifecycle.
+ Note that the exact algorithms are kept secret by most battery
+ vendors and the value from different battery vendors cannot be
+ compared with each other as there is no vendor-agnostic definition
+ of "performance". Also this usually cannot be used for any
+ calculations (i.e. this is not the factor between charge_full and
+ charge_full_design).
+
+ Access: Read
+
+ Valid values: 0 - 100 (percent)
+
**USB Properties**
What: /sys/class/power_supply/<supply_name>/input_current_limit
@@ -583,7 +666,12 @@ Description:
the supply, for example it can show if USB-PD capable source
is attached.
- Access: Read-Only
+ Access: For power-supplies which consume USB power such
+ as battery charger chips, this indicates the type of
+ the connected USB power source and is Read-Only.
+
+ For power-supplies which act as a USB power-source such as
+ e.g. the UCS1002 USB Port Power Controller this is writable.
Valid values:
"Unknown", "SDP", "DCP", "CDP", "ACA", "C", "PD",
@@ -763,3 +851,55 @@ Description:
Access: Read
Valid values: 1-31
+
+What: /sys/class/power_supply/<supply_name>/extensions/<extension_name>
+Date: March 2025
+Contact: linux-pm@vger.kernel.org
+Description:
+ Reports the extensions registered to the power supply.
+ Each entry is a link to the device which registered the extension.
+
+ Access: Read
+
+What: /sys/class/power_supply/max8971-charger/fast_charge_timer
+Date: May 2025
+KernelVersion: 6.15.0
+Contact: Svyatoslav Ryhel <clamor95@gmail.com>
+Description:
+ This entry shows and sets the maximum time the max8971
+ charger operates in fast-charge mode. When the timer expires
+ the device will terminate fast-charge mode (charging current
+ will drop to 0 A) and will trigger interrupt.
+
+ Valid values:
+
+ - 4 - 10 (hours), step by 1
+ - 0: disabled.
+
+What: /sys/class/power_supply/max8971-charger/top_off_threshold_current
+Date: May 2025
+KernelVersion: 6.15.0
+Contact: Svyatoslav Ryhel <clamor95@gmail.com>
+Description:
+ This entry shows and sets the charging current threshold for
+ entering top-off charging mode. When charging current in fast
+ charge mode drops below this value, the charger will trigger
+ interrupt and start top-off charging mode.
+
+ Valid values:
+
+ - 50000 - 200000 (microamps), step by 50000 (rounded down)
+
+What: /sys/class/power_supply/max8971-charger/top_off_timer
+Date: May 2025
+KernelVersion: 6.15.0
+Contact: Svyatoslav Ryhel <clamor95@gmail.com>
+Description:
+ This entry shows and sets the maximum time the max8971
+ charger operates in top-off charge mode. When the timer expires
+ the device will terminate top-off charge mode (charging current
+ will drop to 0 A) and will trigger interrupt.
+
+ Valid values:
+
+ - 0 - 70 (minutes), step by 10 (rounded down)
diff --git a/Documentation/ABI/testing/sysfs-class-power-gaokun b/Documentation/ABI/testing/sysfs-class-power-gaokun
new file mode 100644
index 000000000000..0633aed7b355
--- /dev/null
+++ b/Documentation/ABI/testing/sysfs-class-power-gaokun
@@ -0,0 +1,27 @@
+What: /sys/class/power_supply/gaokun-ec-battery/smart_charge_delay
+Date: March 2025
+KernelVersion: 6.15
+Contact: Pengyu Luo <mitltlatltl@gmail.com>
+Description:
+ This entry allows configuration of smart charging delay.
+
+ Smart charging behavior: when the power adapter is connected
+ for delay hours, battery charging will follow the rules of
+ charge_control_start_threshold and charge_control_end_threshold.
+ For more information about charge control, please refer to
+ sysfs-class-power.
+
+ Access: Read, Write
+
+ Valid values: In hours (non-negative)
+
+What: /sys/class/power_supply/gaokun-ec-battery/battery_adaptive_charge
+Date: March 2025
+KernelVersion: 6.15
+Contact: Pengyu Luo <mitltlatltl@gmail.com>
+Description:
+ This entry allows enabling battery adaptive charging.
+
+ Access: Read, Write
+
+ Valid values: 0 (disabled) or 1 (enabled)
diff --git a/Documentation/ABI/testing/sysfs-class-power-max1720x b/Documentation/ABI/testing/sysfs-class-power-max1720x
new file mode 100644
index 000000000000..7d895bfda9ce
--- /dev/null
+++ b/Documentation/ABI/testing/sysfs-class-power-max1720x
@@ -0,0 +1,32 @@
+What: /sys/class/power_supply/max1720x/temp_ain1
+Date: January 2025
+KernelVersion: 6.14
+Contact: Dimitri Fedrau <dimitri.fedrau@liebherr.com>
+Description:
+ Reports the current temperature reading from AIN1 thermistor.
+
+ Access: Read
+
+ Valid values: Represented in 1/10 Degrees Celsius
+
+What: /sys/class/power_supply/max1720x/temp_ain2
+Date: January 2025
+KernelVersion: 6.14
+Contact: Dimitri Fedrau <dimitri.fedrau@liebherr.com>
+Description:
+ Reports the current temperature reading from AIN2 thermistor.
+
+ Access: Read
+
+ Valid values: Represented in 1/10 Degrees Celsius
+
+What: /sys/class/power_supply/max1720x/temp_int
+Date: January 2025
+KernelVersion: 6.14
+Contact: Dimitri Fedrau <dimitri.fedrau@liebherr.com>
+Description:
+ Reports the current temperature reading from internal die.
+
+ Access: Read
+
+ Valid values: Represented in 1/10 Degrees Celsius
diff --git a/Documentation/ABI/testing/sysfs-class-power-rt9467 b/Documentation/ABI/testing/sysfs-class-power-rt9467
new file mode 100644
index 000000000000..619b7c45d145
--- /dev/null
+++ b/Documentation/ABI/testing/sysfs-class-power-rt9467
@@ -0,0 +1,19 @@
+What: /sys/class/power_supply/rt9467-*/sysoff_enable
+Date: Feb 2023
+KernelVersion: 6.3
+Contact: ChiaEn Wu <chiaen_wu@richtek.com>
+Description:
+ This entry allows enabling the sysoff mode of rt9467 charger
+ devices.
+ If enabled and the input is removed, the internal battery FET
+ is turned off to reduce the leakage from the BAT pin. See
+ device datasheet for details. It's commonly used when the
+ product enter shipping stage. After entering shipping mode,
+ only 'VBUS' or 'Power key" pressed can make it leave this mode.
+ 'Disable' also can help to leave it, but it's more like to
+ abort the action before the device really enter shipping mode.
+
+ Access: Read, Write
+ Valid values:
+ - 1: enabled
+ - 0: disabled
diff --git a/Documentation/ABI/testing/sysfs-class-power-rt9471 b/Documentation/ABI/testing/sysfs-class-power-rt9471
new file mode 100644
index 000000000000..0a390ee5ac21
--- /dev/null
+++ b/Documentation/ABI/testing/sysfs-class-power-rt9471
@@ -0,0 +1,32 @@
+What: /sys/class/power_supply/rt9471-*/sysoff_enable
+Date: Feb 2023
+KernelVersion: 6.3
+Contact: ChiYuan Huang <cy_huang@richtek.com>
+Description:
+ This entry allows enabling the sysoff mode of rt9471 charger devices.
+ If enabled and the input is removed, the internal battery FET is turned
+ off to reduce the leakage from the BAT pin. See device datasheet for details.
+ It's commonly used when the product enter shipping stage. After entering
+ shipping mode, only 'VBUS' or 'Power key" pressed can make it leave this
+ mode. 'Disable' also can help to leave it, but it's more like to abort
+ the action before the device really enter shipping mode.
+
+ Access: Read, Write
+ Valid values:
+ - 1: enabled
+ - 0: disabled
+
+What: /sys/class/power_supply/rt9471-*/port_detect_enable
+Date: Feb 2023
+KernelVersion: 6.3
+Contact: ChiYuan Huang <cy_huang@richtek.com>
+Description:
+ This entry allows enabling the USB BC12 port detect function of rt9471 charger
+ devices. If enabled and VBUS is inserted, device will start to do the BC12
+ port detect and report the usb port type when port detect is done. See
+ datasheet for details. Normally controlled when TypeC/USBPD port integrated.
+
+ Access: Read, Write
+ Valid values:
+ - 1: enabled
+ - 0: disabled
diff --git a/Documentation/ABI/testing/sysfs-class-power-rt9756 b/Documentation/ABI/testing/sysfs-class-power-rt9756
new file mode 100644
index 000000000000..c4d6c2b4715d
--- /dev/null
+++ b/Documentation/ABI/testing/sysfs-class-power-rt9756
@@ -0,0 +1,30 @@
+What: /sys/class/power_supply/rt9756-*/watchdog_timer
+Date: Dec 2025
+KernelVersion: 6.19
+Contact: ChiYuan Huang <cy_huang@richtek.com>
+Description:
+ This entry shows and sets the watchdog timer when rt9756 charger
+ operates in charging mode. When the timer expires, the device
+ will disable the charging. To prevent the timer expires, any
+ host communication can make the timer restarted.
+
+ Access: Read, Write
+
+ Valid values:
+ - 500, 1000, 5000, 30000, 40000, 80000, 128000 or 255000 (milliseconds),
+ - 0: disabled
+
+What: /sys/class/power_supply/rt9756-*/operation_mode
+Date: Dec 2025
+KernelVersion: 6.19
+Contact: ChiYuan Huang <cy_huang@richtek.com>
+Description:
+ This entry shows and set the operation mode when rt9756 charger
+ operates in charging phase. If 'bypass' mode is used, internal
+ path will connect vbus directly to vbat. Else, default 'div2'
+ mode for the switch-cap charging.
+
+ Access: Read, Write
+
+ Valid values:
+ - 'bypass' or 'div2'
diff --git a/Documentation/ABI/testing/sysfs-class-power-wilco b/Documentation/ABI/testing/sysfs-class-power-wilco
index 82af180fcaab..083c4641b4c4 100644
--- a/Documentation/ABI/testing/sysfs-class-power-wilco
+++ b/Documentation/ABI/testing/sysfs-class-power-wilco
@@ -22,7 +22,7 @@ Description:
Long Life:
Customized charge rate for last longer battery life.
On Wilco device this mode is pre-configured in the factory
- through EC's private PID. Swiching to a different mode will
+ through EC's private PID. Switching to a different mode will
be denied by Wilco EC when Long Life mode is enabled.
What: /sys/class/power_supply/wilco-charger/charge_control_start_threshold
diff --git a/Documentation/ABI/testing/sysfs-class-pwm b/Documentation/ABI/testing/sysfs-class-pwm
index 3d65285bcd5f..0638c94d01ef 100644
--- a/Documentation/ABI/testing/sysfs-class-pwm
+++ b/Documentation/ABI/testing/sysfs-class-pwm
@@ -81,7 +81,7 @@ Description:
What: /sys/class/pwm/pwmchip<N>/pwmX/capture
Date: June 2016
KernelVersion: 4.8
-Contact: Lee Jones <lee.jones@linaro.org>
+Contact: Lee Jones <lee@kernel.org>
Description:
Capture information about a PWM signal. The output format is a
pair unsigned integers (period and duty cycle), separated by a
diff --git a/Documentation/ABI/testing/sysfs-class-regulator b/Documentation/ABI/testing/sysfs-class-regulator
index 8516f08806dd..475b9a372657 100644
--- a/Documentation/ABI/testing/sysfs-class-regulator
+++ b/Documentation/ABI/testing/sysfs-class-regulator
@@ -370,3 +370,84 @@ Description:
'unknown' means software cannot determine the state, or
the reported state is invalid.
+
+What: /sys/class/regulator/.../under_voltage
+Date: April 2022
+KernelVersion: 5.18
+Contact: Zev Weiss <zev@bewilderbeest.net>
+Description:
+ Some regulator directories will contain a field called
+ under_voltage. This indicates if the device reports an
+ under-voltage fault (1) or not (0).
+
+What: /sys/class/regulator/.../over_current
+Date: April 2022
+KernelVersion: 5.18
+Contact: Zev Weiss <zev@bewilderbeest.net>
+Description:
+ Some regulator directories will contain a field called
+ over_current. This indicates if the device reports an
+ over-current fault (1) or not (0).
+
+What: /sys/class/regulator/.../regulation_out
+Date: April 2022
+KernelVersion: 5.18
+Contact: Zev Weiss <zev@bewilderbeest.net>
+Description:
+ Some regulator directories will contain a field called
+ regulation_out. This indicates if the device reports an
+ out-of-regulation fault (1) or not (0).
+
+What: /sys/class/regulator/.../fail
+Date: April 2022
+KernelVersion: 5.18
+Contact: Zev Weiss <zev@bewilderbeest.net>
+Description:
+ Some regulator directories will contain a field called
+ fail. This indicates if the device reports an output failure
+ (1) or not (0).
+
+What: /sys/class/regulator/.../over_temp
+Date: April 2022
+KernelVersion: 5.18
+Contact: Zev Weiss <zev@bewilderbeest.net>
+Description:
+ Some regulator directories will contain a field called
+ over_temp. This indicates if the device reports an
+ over-temperature fault (1) or not (0).
+
+What: /sys/class/regulator/.../under_voltage_warn
+Date: April 2022
+KernelVersion: 5.18
+Contact: Zev Weiss <zev@bewilderbeest.net>
+Description:
+ Some regulator directories will contain a field called
+ under_voltage_warn. This indicates if the device reports an
+ under-voltage warning (1) or not (0).
+
+What: /sys/class/regulator/.../over_current_warn
+Date: April 2022
+KernelVersion: 5.18
+Contact: Zev Weiss <zev@bewilderbeest.net>
+Description:
+ Some regulator directories will contain a field called
+ over_current_warn. This indicates if the device reports an
+ over-current warning (1) or not (0).
+
+What: /sys/class/regulator/.../over_voltage_warn
+Date: April 2022
+KernelVersion: 5.18
+Contact: Zev Weiss <zev@bewilderbeest.net>
+Description:
+ Some regulator directories will contain a field called
+ over_voltage_warn. This indicates if the device reports an
+ over-voltage warning (1) or not (0).
+
+What: /sys/class/regulator/.../over_temp_warn
+Date: April 2022
+KernelVersion: 5.18
+Contact: Zev Weiss <zev@bewilderbeest.net>
+Description:
+ Some regulator directories will contain a field called
+ over_temp_warn. This indicates if the device reports an
+ over-temperature warning (1) or not (0).
diff --git a/Documentation/ABI/testing/sysfs-class-remoteproc b/Documentation/ABI/testing/sysfs-class-remoteproc
index 0c9ee55098b8..b2b8e2db2503 100644
--- a/Documentation/ABI/testing/sysfs-class-remoteproc
+++ b/Documentation/ABI/testing/sysfs-class-remoteproc
@@ -81,7 +81,7 @@ Description: Remote processor coredump configuration
collected userspace will directly read from the remote
processor's device memory. Extra buffer will not be used to
copy the dump. Also recovery process will not proceed until
- all data is read by usersapce.
+ all data is read by userspace.
What: /sys/class/remoteproc/.../recovery
Date: July 2020
diff --git a/Documentation/ABI/testing/sysfs-class-rtrs-client b/Documentation/ABI/testing/sysfs-class-rtrs-client
index 49a4157c7bf1..fecc59d1b96f 100644
--- a/Documentation/ABI/testing/sysfs-class-rtrs-client
+++ b/Documentation/ABI/testing/sysfs-class-rtrs-client
@@ -78,7 +78,7 @@ What: /sys/class/rtrs-client/<session-name>/paths/<src@dst>/hca_name
Date: Feb 2020
KernelVersion: 5.7
Contact: Jack Wang <jinpu.wang@cloud.ionos.com> Danil Kipnis <danil.kipnis@cloud.ionos.com>
-Description: RO, Contains the the name of HCA the connection established on.
+Description: RO, Contains the name of HCA the connection established on.
What: /sys/class/rtrs-client/<session-name>/paths/<src@dst>/hca_port
Date: Feb 2020
diff --git a/Documentation/ABI/testing/sysfs-class-rtrs-server b/Documentation/ABI/testing/sysfs-class-rtrs-server
index 3b6d5b067df0..b08601d80409 100644
--- a/Documentation/ABI/testing/sysfs-class-rtrs-server
+++ b/Documentation/ABI/testing/sysfs-class-rtrs-server
@@ -24,7 +24,7 @@ What: /sys/class/rtrs-server/<session-name>/paths/<src@dst>/hca_name
Date: Feb 2020
KernelVersion: 5.7
Contact: Jack Wang <jinpu.wang@cloud.ionos.com> Danil Kipnis <danil.kipnis@cloud.ionos.com>
-Description: RO, Contains the the name of HCA the connection established on.
+Description: RO, Contains the name of HCA the connection established on.
What: /sys/class/rtrs-server/<session-name>/paths/<src@dst>/hca_port
Date: Feb 2020
diff --git a/Documentation/ABI/testing/sysfs-class-tee b/Documentation/ABI/testing/sysfs-class-tee
new file mode 100644
index 000000000000..c9144d16003e
--- /dev/null
+++ b/Documentation/ABI/testing/sysfs-class-tee
@@ -0,0 +1,15 @@
+What: /sys/class/tee/tee{,priv}X/rpmb_routing_model
+Date: May 2024
+KernelVersion: 6.10
+Contact: op-tee@lists.trustedfirmware.org
+Description:
+ RPMB frames can be routed to the RPMB device via the
+ user-space daemon tee-supplicant or the RPMB subsystem
+ in the kernel. The value "user" means that the driver
+ will route the RPMB frames via user space. Conversely,
+ "kernel" means that the frames are routed via the RPMB
+ subsystem without assistance from tee-supplicant. It
+ should be assumed that RPMB frames are routed via user
+ space if the variable is absent. The primary purpose
+ of this variable is to let systemd know whether
+ tee-supplicant is needed in the early boot with initramfs.
diff --git a/Documentation/ABI/testing/sysfs-class-thermal b/Documentation/ABI/testing/sysfs-class-thermal
index 2c52bb1f864c..968d89e15e8e 100644
--- a/Documentation/ABI/testing/sysfs-class-thermal
+++ b/Documentation/ABI/testing/sysfs-class-thermal
@@ -4,7 +4,7 @@ Description:
This is given by thermal zone driver as part of registration.
E.g: "acpitz" indicates it's an ACPI thermal device.
In order to keep it consistent with hwmon sys attribute; this
- shouldbe a short, lowercase string, not containing spaces nor
+ should be a short, lowercase string, not containing spaces nor
dashes.
RO, Required
@@ -203,7 +203,7 @@ Description:
- for generic ACPI: should be "Fan", "Processor" or "LCD"
- for memory controller device on intel_menlow platform:
- should be "Memory controller".
+ should be "Memory controller".
RO, Required
diff --git a/Documentation/ABI/testing/sysfs-class-tsm b/Documentation/ABI/testing/sysfs-class-tsm
new file mode 100644
index 000000000000..6fc1a5ac6da1
--- /dev/null
+++ b/Documentation/ABI/testing/sysfs-class-tsm
@@ -0,0 +1,19 @@
+What: /sys/class/tsm/tsmN
+Contact: linux-coco@lists.linux.dev
+Description:
+ "tsmN" is a device that represents the generic attributes of a
+ platform TEE Security Manager. It is typically a child of a
+ platform enumerated TSM device. /sys/class/tsm/tsmN/uevent
+ signals when the PCI layer is able to support establishment of
+ link encryption and other device-security features coordinated
+ through a platform tsm.
+
+What: /sys/class/tsm/tsmN/streamH.R.E
+Contact: linux-pci@vger.kernel.org
+Description:
+ (RO) When a host bridge has established a secure connection via
+ the platform TSM, symlink appears. The primary function of this
+ is have a system global review of TSM resource consumption
+ across host bridges. The link points to the endpoint PCI device
+ and matches the same link published by the host bridge. See
+ Documentation/ABI/testing/sysfs-devices-pci-host-bridge.
diff --git a/Documentation/ABI/testing/sysfs-class-typec b/Documentation/ABI/testing/sysfs-class-typec
index 75088ecad202..38e101c17a00 100644
--- a/Documentation/ABI/testing/sysfs-class-typec
+++ b/Documentation/ABI/testing/sysfs-class-typec
@@ -141,6 +141,27 @@ Description:
- "reverse": CC2 orientation
- "unknown": Orientation cannot be determined.
+What: /sys/class/typec/<port>/select_usb_power_delivery
+Date: May 2022
+Contact: Heikki Krogerus <heikki.krogerus@linux.intel.com>
+Description:
+ Lists the USB Power Delivery Capabilities that the port can
+ advertise to the partner. The currently used capabilities are in
+ brackets. Selection happens by writing to the file.
+
+What: /sys/class/typec/<port>/usb_capability
+Date: November 2024
+Contact: Heikki Krogerus <heikki.krogerus@linux.intel.com>
+Description: Lists the supported USB Modes. The default USB mode that is used
+ next time with the Enter_USB Message is in brackets. The default
+ mode can be changed by writing to the file when supported by the
+ driver.
+
+ Valid values:
+ - usb2 (USB 2.0)
+ - usb3 (USB 3.2)
+ - usb4 (USB4)
+
USB Type-C partner devices (eg. /sys/class/typec/port0-partner/)
What: /sys/class/typec/<port>-partner/accessory_mode
@@ -212,6 +233,20 @@ Description:
directory exists, it will have an attribute file for every VDO
in Discover Identity command result.
+What: /sys/class/typec/<port>-partner/usb_mode
+Date: November 2024
+Contact: Heikki Krogerus <heikki.krogerus@linux.intel.com>
+Description: The USB Modes that the partner device supports. The active mode
+ is displayed in brackets. The active USB mode can be changed by
+ writing to this file when the port driver is able to send Data
+ Reset Message to the partner. That requires USB Power Delivery
+ contract between the partner and the port.
+
+ Valid values:
+ - usb2 (USB 2.0)
+ - usb3 (USB 3.2)
+ - usb4 (USB4)
+
USB Type-C cable devices (eg. /sys/class/typec/port0-cable/)
Note: Electronically Marked Cables will have a device also for one cable plug
diff --git a/Documentation/ABI/testing/sysfs-class-usb_power_delivery b/Documentation/ABI/testing/sysfs-class-usb_power_delivery
new file mode 100644
index 000000000000..c754458a527e
--- /dev/null
+++ b/Documentation/ABI/testing/sysfs-class-usb_power_delivery
@@ -0,0 +1,284 @@
+What: /sys/class/usb_power_delivery
+Date: May 2022
+Contact: Heikki Krogerus <heikki.krogerus@linux.intel.com>
+Description:
+ Directory for USB Power Delivery devices.
+
+What: /sys/class/usb_power_delivery/.../revision
+Date: May 2022
+Contact: Heikki Krogerus <heikki.krogerus@linux.intel.com>
+Description:
+ File showing the USB Power Delivery Specification Revision used
+ in communication.
+
+What: /sys/class/usb_power_delivery/.../version
+Date: May 2022
+Contact: Heikki Krogerus <heikki.krogerus@linux.intel.com>
+Description:
+ This is an optional attribute file showing the version of the
+ specific revision of the USB Power Delivery Specification. In
+ most cases the specification version is not known and the file
+ is not available.
+
+What: /sys/class/usb_power_delivery/.../source-capabilities
+Date: May 2022
+Contact: Heikki Krogerus <heikki.krogerus@linux.intel.com>
+Description:
+ The source capabilities message "Source_Capabilities" contains a
+ set of Power Data Objects (PDO), each representing a type of
+ power supply. The order of the PDO objects is defined in the USB
+ Power Delivery Specification. Each PDO - power supply - will
+ have its own device, and the PDO device name will start with the
+ object position number as the first character followed by the
+ power supply type name (":" as delimiter).
+
+ /sys/class/usb_power_delivery/.../source_capabilities/<position>:<type>
+
+What: /sys/class/usb_power_delivery/.../sink-capabilities
+Date: May 2022
+Contact: Heikki Krogerus <heikki.krogerus@linux.intel.com>
+Description:
+ The sink capability message "Sink_Capabilities" contains a set
+ of Power Data Objects (PDO) just like with source capabilities,
+ but instead of describing the power capabilities, these objects
+ describe the power requirements.
+
+ The order of the objects in the sink capability message is the
+ same as with the source capabilities message.
+
+Fixed Supplies
+
+What: /sys/class/usb_power_delivery/.../<capability>/<position>:fixed_supply
+Date: May 2022
+Contact: Heikki Krogerus <heikki.krogerus@linux.intel.com>
+Description:
+ Devices containing the attributes (the bit fields) defined for
+ Fixed Supplies.
+
+ The device "1:fixed_supply" is special. USB Power Delivery
+ Specification dictates that the first PDO (at object position
+ 1), and the only mandatory PDO, is always the vSafe5V Fixed
+ Supply Object. vSafe5V Object has additional fields defined for
+ it that the other Fixed Supply Objects do not have and that are
+ related to the USB capabilities rather than power capabilities.
+
+What: /sys/class/usb_power_delivery/.../<capability>/1:fixed_supply/dual_role_power
+Date: May 2022
+Contact: Heikki Krogerus <heikki.krogerus@linux.intel.com>
+Description:
+ This file contains boolean value that tells does the device
+ support both source and sink power roles.
+
+What: /sys/class/usb_power_delivery/.../source-capabilities/1:fixed_supply/usb_suspend_supported
+Date: May 2022
+Contact: Heikki Krogerus <heikki.krogerus@linux.intel.com>
+Description:
+ This file shows the value of the USB Suspend Supported bit in
+ vSafe5V Fixed Supply Object. If the bit is set then the device
+ will follow the USB 2.0 and USB 3.2 rules for suspend and
+ resume.
+
+What: /sys/class/usb_power_delivery/.../sink-capabilities/1:fixed_supply/higher_capability
+Date: February 2023
+Contact: Saranya Gopal <saranya.gopal@linux.intel.com>
+Description:
+ This file shows the value of the Higher capability bit in
+ vsafe5V Fixed Supply Object. If the bit is set, then the sink
+ needs more than vsafe5V(eg. 12 V) to provide full functionality.
+ Valid values: 0, 1
+
+What: /sys/class/usb_power_delivery/.../<capability>/1:fixed_supply/unconstrained_power
+Date: May 2022
+Contact: Heikki Krogerus <heikki.krogerus@linux.intel.com>
+Description:
+ This file shows the value of the Unconstrained Power bit in
+ vSafe5V Fixed Supply Object. The bit is set when an external
+ source of power, powerful enough to power the entire system on
+ its own, is available for the device.
+
+What: /sys/class/usb_power_delivery/.../<capability>/1:fixed_supply/usb_communication_capable
+Date: May 2022
+Contact: Heikki Krogerus <heikki.krogerus@linux.intel.com>
+Description:
+ This file shows the value of the USB Communication Capable bit in
+ vSafe5V Fixed Supply Object.
+
+What: /sys/class/usb_power_delivery/.../<capability>/1:fixed_supply/dual_role_data
+Date: May 2022
+Contact: Heikki Krogerus <heikki.krogerus@linux.intel.com>
+Description:
+ This file shows the value of the Dual-Role Data bit in vSafe5V
+ Fixed Supply Object. Dual role data means ability act as both
+ USB host and USB device.
+
+What: /sys/class/usb_power_delivery/.../<capability>/1:fixed_supply/unchunked_extended_messages_supported
+Date: May 2022
+Contact: Heikki Krogerus <heikki.krogerus@linux.intel.com>
+Description:
+ This file shows the value of the Unchunked Extended Messages
+ Supported bit in vSafe5V Fixed Supply Object.
+
+What: /sys/class/usb_power_delivery/.../<capability>/<position>:fixed_supply/voltage
+Date: May 2022
+Contact: Heikki Krogerus <heikki.krogerus@linux.intel.com>
+Description:
+ The voltage the supply supports in millivolts.
+
+What: /sys/class/usb_power_delivery/.../source-capabilities/<position>:fixed_supply/peak_current
+Date: October 2023
+Contact: Heikki Krogerus <heikki.krogerus@linux.intel.com>
+Description:
+ This file shows the value of the Fixed Power Source Peak Current
+ Capability field.
+
+What: /sys/class/usb_power_delivery/.../source-capabilities/<position>:fixed_supply/maximum_current
+Date: May 2022
+Contact: Heikki Krogerus <heikki.krogerus@linux.intel.com>
+Description:
+ Maximum current of the fixed source supply in milliamperes.
+
+What: /sys/class/usb_power_delivery/.../sink-capabilities/<position>:fixed_supply/operational_current
+Date: May 2022
+Contact: Heikki Krogerus <heikki.krogerus@linux.intel.com>
+Description:
+ Operational current of the sink in milliamperes.
+
+What: /sys/class/usb_power_delivery/.../sink-capabilities/<position>:fixed_supply/fast_role_swap_current
+Date: May 2022
+Contact: Heikki Krogerus <heikki.krogerus@linux.intel.com>
+Description:
+ This file contains the value of the "Fast Role Swap USB Type-C
+ Current" field that tells the current level the sink requires
+ after a Fast Role Swap.
+ 0 - Fast Swap not supported"
+ 1 - Default USB Power"
+ 2 - 1.5A@5V"
+ 3 - 3.0A@5V"
+
+Variable Supplies
+
+What: /sys/class/usb_power_delivery/.../<capability>/<position>:variable_supply
+Date: May 2022
+Contact: Heikki Krogerus <heikki.krogerus@linux.intel.com>
+Description:
+ Variable Power Supply PDO.
+
+What: /sys/class/usb_power_delivery/.../<capability>/<position>:variable_supply/maximum_voltage
+Date: May 2022
+Contact: Heikki Krogerus <heikki.krogerus@linux.intel.com>
+Description:
+ Maximum Voltage in millivolts.
+
+What: /sys/class/usb_power_delivery/.../<capability>/<position>:variable_supply/minimum_voltage
+Date: May 2022
+Contact: Heikki Krogerus <heikki.krogerus@linux.intel.com>
+Description:
+ Minimum Voltage in millivolts.
+
+What: /sys/class/usb_power_delivery/.../source-capabilities/<position>:variable_supply/maximum_current
+Date: May 2022
+Contact: Heikki Krogerus <heikki.krogerus@linux.intel.com>
+Description:
+ The maximum current in milliamperes that the source can supply
+ at the given Voltage range.
+
+What: /sys/class/usb_power_delivery/.../sink-capabilities/<position>:variable_supply/operational_current
+Date: May 2022
+Contact: Heikki Krogerus <heikki.krogerus@linux.intel.com>
+Description:
+ The operational current in milliamperes that the sink requires
+ at the given Voltage range.
+
+Battery Supplies
+
+What: /sys/class/usb_power_delivery/.../<capability>/<position>:battery
+Date: May 2022
+Contact: Heikki Krogerus <heikki.krogerus@linux.intel.com>
+Description:
+ Battery PDO.
+
+What: /sys/class/usb_power_delivery/.../<capability>/<position>:battery/maximum_voltage
+Date: May 2022
+Contact: Heikki Krogerus <heikki.krogerus@linux.intel.com>
+Description:
+ Maximum Voltage in millivolts.
+
+What: /sys/class/usb_power_delivery/.../<capability>/<position>:battery/minimum_voltage
+Date: May 2022
+Contact: Heikki Krogerus <heikki.krogerus@linux.intel.com>
+Description:
+ Minimum Voltage in millivolts.
+
+What: /sys/class/usb_power_delivery/.../source-capabilities/<position>:battery/maximum_power
+Date: May 2022
+Contact: Heikki Krogerus <heikki.krogerus@linux.intel.com>
+Description:
+ Maximum allowable Power in milliwatts.
+
+What: /sys/class/usb_power_delivery/.../sink-capabilities/<position>:battery/operational_power
+Date: May 2022
+Contact: Heikki Krogerus <heikki.krogerus@linux.intel.com>
+Description:
+ The operational power that the sink requires at the given
+ voltage range.
+
+Standard Power Range (SPR) Programmable Power Supplies
+
+What: /sys/class/usb_power_delivery/.../<capability>/<position>:programmable_supply
+Date: May 2022
+Contact: Heikki Krogerus <heikki.krogerus@linux.intel.com>
+Description:
+ Programmable Power Supply (PPS) Augmented PDO (APDO).
+
+What: /sys/class/usb_power_delivery/.../<capability>/<position>:programmable_supply/maximum_voltage
+Date: May 2022
+Contact: Heikki Krogerus <heikki.krogerus@linux.intel.com>
+Description:
+ Maximum Voltage in millivolts.
+
+What: /sys/class/usb_power_delivery/.../<capability>/<position>:programmable_supply/minimum_voltage
+Date: May 2022
+Contact: Heikki Krogerus <heikki.krogerus@linux.intel.com>
+Description:
+ Minimum Voltage in millivolts.
+
+What: /sys/class/usb_power_delivery/.../<capability>/<position>:programmable_supply/maximum_current
+Date: May 2022
+Contact: Heikki Krogerus <heikki.krogerus@linux.intel.com>
+Description:
+ Maximum Current in milliamperes.
+
+What: /sys/class/usb_power_delivery/.../source-capabilities/<position>:programmable_supply/pps_power_limited
+Date: May 2022
+Contact: Heikki Krogerus <heikki.krogerus@linux.intel.com>
+Description:
+ The PPS Power Limited bit indicates whether or not the source
+ supply will exceed the rated output power if requested.
+
+Standard Power Range (SPR) Adjustable Voltage Supplies
+
+What: /sys/class/usb_power_delivery/.../<capability>/<position>:spr_adjustable_voltage_supply
+Date: Oct 2025
+Contact: Badhri Jagan Sridharan <badhri@google.com>
+Description:
+ Adjustable Voltage Supply (AVS) Augmented PDO (APDO).
+
+What: /sys/class/usb_power_delivery/.../<capability>/<position>:spr_adjustable_voltage_supply/maximum_current_9V_to_15V
+Date: Oct 2025
+Contact: Badhri Jagan Sridharan <badhri@google.com>
+Description:
+ Maximum Current for 9V to 15V range in milliamperes.
+
+What: /sys/class/usb_power_delivery/.../<capability>/<position>:spr_adjustable_voltage_supply/maximum_current_15V_to_20V
+Date: Oct 2025
+Contact: Badhri Jagan Sridharan <badhri@google.com>
+Description:
+ Maximum Current for greater than 15V till 20V range in
+ milliamperes.
+
+What: /sys/class/usb_power_delivery/.../<capability>/<position>:spr_adjustable_voltage_supply/peak_current
+Date: Oct 2025
+Contact: Badhri Jagan Sridharan <badhri@google.com>
+Description:
+ This file shows the value of the Adjustable Voltage Supply Peak Current
+ Capability field.
diff --git a/Documentation/ABI/testing/sysfs-class-usb_role b/Documentation/ABI/testing/sysfs-class-usb_role
index 3b810a425a52..9fab3f06679e 100644
--- a/Documentation/ABI/testing/sysfs-class-usb_role
+++ b/Documentation/ABI/testing/sysfs-class-usb_role
@@ -19,3 +19,9 @@ Description:
- none
- host
- device
+
+What: /sys/class/usb_role/<switch>/connector
+Date: Feb 2024
+Contact: Heikki Krogerus <heikki.krogerus@linux.intel.com>
+Description:
+ Optional symlink to the USB Type-C connector.
diff --git a/Documentation/ABI/testing/sysfs-class-uwb_rc b/Documentation/ABI/testing/sysfs-class-uwb_rc
deleted file mode 100644
index a7ea169dc4eb..000000000000
--- a/Documentation/ABI/testing/sysfs-class-uwb_rc
+++ /dev/null
@@ -1,156 +0,0 @@
-What: /sys/class/uwb_rc
-Date: July 2008
-KernelVersion: 2.6.27
-Contact: linux-usb@vger.kernel.org
-Description:
- Interfaces for WiMedia Ultra Wideband Common Radio
- Platform (UWB) radio controllers.
-
- Familiarity with the ECMA-368 'High Rate Ultra
- Wideband MAC and PHY Specification' is assumed.
-
-What: /sys/class/uwb_rc/beacon_timeout_ms
-Date: July 2008
-KernelVersion: 2.6.27
-Description:
- If no beacons are received from a device for at least
- this time, the device will be considered to have gone
- and it will be removed. The default is 3 superframes
- (~197 ms) as required by the specification.
-
-What: /sys/class/uwb_rc/uwb<N>/
-Date: July 2008
-KernelVersion: 2.6.27
-Contact: linux-usb@vger.kernel.org
-Description:
- An individual UWB radio controller.
-
-What: /sys/class/uwb_rc/uwb<N>/beacon
-Date: July 2008
-KernelVersion: 2.6.27
-Contact: linux-usb@vger.kernel.org
-Description:
- Write:
-
- <channel>
-
- to force a specific channel to be used when beaconing,
- or, if <channel> is -1, to prohibit beaconing. If
- <channel> is 0, then the default channel selection
- algorithm will be used. Valid channels depends on the
- radio controller's supported band groups.
-
- Reading returns the currently active channel, or -1 if
- the radio controller is not beaconing.
-
-What: /sys/class/uwb_rc/uwb<N>/ASIE
-Date: August 2014
-KernelVersion: 3.18
-Contact: linux-usb@vger.kernel.org
-Description:
-
- The application-specific information element (ASIE)
- included in this device's beacon, in space separated
- hex octets.
-
- Reading returns the current ASIE. Writing replaces
- the current ASIE with the one written.
-
-What: /sys/class/uwb_rc/uwb<N>/scan
-Date: July 2008
-KernelVersion: 2.6.27
-Contact: linux-usb@vger.kernel.org
-Description:
- Write:
-
- <channel> <type> [<bpst offset>]
-
- to start (or stop) scanning on a channel. <type> is one of:
-
- == =======================================
- 0 scan
- 1 scan outside BP
- 2 scan while inactive
- 3 scanning disabled
- 4 scan (with start time of <bpst offset>)
- == =======================================
-
-What: /sys/class/uwb_rc/uwb<N>/mac_address
-Date: July 2008
-KernelVersion: 2.6.27
-Contact: linux-usb@vger.kernel.org
-Description:
- The EUI-48, in colon-separated hex octets, for this
- radio controller. A write will change the radio
- controller's EUI-48 but only do so while the device is
- not beaconing or scanning.
-
-What: /sys/class/uwb_rc/uwb<N>/wusbhc
-Date: July 2008
-KernelVersion: 2.6.27
-Contact: linux-usb@vger.kernel.org
-Description:
- A symlink to the device (if any) of the WUSB Host
- Controller PAL using this radio controller.
-
-What: /sys/class/uwb_rc/uwb<N>/<EUI-48>/
-Date: July 2008
-KernelVersion: 2.6.27
-Contact: linux-usb@vger.kernel.org
-Description:
- A neighbour UWB device that has either been detected
- as part of a scan or is a member of the radio
- controllers beacon group.
-
-What: /sys/class/uwb_rc/uwb<N>/<EUI-48>/BPST
-Date: July 2008
-KernelVersion: 2.6.27
-Contact: linux-usb@vger.kernel.org
-Description:
- The time (using the radio controllers internal 1 ms
- interval superframe timer) of the last beacon from
- this device was received.
-
-What: /sys/class/uwb_rc/uwb<N>/<EUI-48>/DevAddr
-Date: July 2008
-KernelVersion: 2.6.27
-Contact: linux-usb@vger.kernel.org
-Description:
- The current DevAddr of this device in colon separated
- hex octets.
-
-What: /sys/class/uwb_rc/uwb<N>/<EUI-48>/EUI_48
-Date: July 2008
-KernelVersion: 2.6.27
-Contact: linux-usb@vger.kernel.org
-Description:
-
- The EUI-48 of this device in colon separated hex
- octets.
-
-What: /sys/class/uwb_rc/uwb<N>/<EUI-48>/IEs
-Date: July 2008
-KernelVersion: 2.6.27
-Contact: linux-usb@vger.kernel.org
-Description:
- The latest IEs included in this device's beacon, in
- space separated hex octets with one IE per line.
-
-What: /sys/class/uwb_rc/uwb<N>/<EUI-48>/LQE
-Date: July 2008
-KernelVersion: 2.6.27
-Contact: linux-usb@vger.kernel.org
-Description:
- Link Quality Estimate - the Signal to Noise Ratio
- (SNR) of all packets received from this device in dB.
- This gives an estimate on a suitable PHY rate. Refer
- to [ECMA-368] section 13.3 for more details.
-
-What: /sys/class/uwb_rc/uwb<N>/<EUI-48>/RSSI
-Date: July 2008
-KernelVersion: 2.6.27
-Contact: linux-usb@vger.kernel.org
-Description:
- Received Signal Strength Indication - the strength of
- the received signal in dB. LQE is a more useful
- measure of the radio link quality.
diff --git a/Documentation/ABI/testing/sysfs-class-uwb_rc-wusbhc b/Documentation/ABI/testing/sysfs-class-uwb_rc-wusbhc
deleted file mode 100644
index 55eb55cac92e..000000000000
--- a/Documentation/ABI/testing/sysfs-class-uwb_rc-wusbhc
+++ /dev/null
@@ -1,57 +0,0 @@
-What: /sys/class/uwb_rc/uwb<N>/wusbhc/wusb_chid
-Date: July 2008
-KernelVersion: 2.6.27
-Contact: David Vrabel <david.vrabel@csr.com>
-Description:
- Write the CHID (16 space-separated hex octets) for this host controller.
- This starts the host controller, allowing it to accept connection from
- WUSB devices.
-
- Set an all zero CHID to stop the host controller.
-
-What: /sys/class/uwb_rc/uwb<N>/wusbhc/wusb_trust_timeout
-Date: July 2008
-KernelVersion: 2.6.27
-Contact: David Vrabel <david.vrabel@csr.com>
-Description:
- Devices that haven't sent a WUSB packet to the host
- within 'wusb_trust_timeout' ms are considered to have
- disconnected and are removed. The default value of
- 4000 ms is the value required by the WUSB
- specification.
-
- Since this relates to security (specifically, the
- lifetime of PTKs and GTKs) it should not be changed
- from the default.
-
-What: /sys/class/uwb_rc/uwb<N>/wusbhc/wusb_phy_rate
-Date: August 2009
-KernelVersion: 2.6.32
-Contact: David Vrabel <david.vrabel@csr.com>
-Description:
- The maximum PHY rate to use for all connected devices.
- This is only of limited use for testing and
- development as the hardware's automatic rate
- adaptation is better then this simple control.
-
- Refer to [ECMA-368] section 10.3.1.1 for the value to
- use.
-
-What: /sys/class/uwb_rc/uwb<N>/wusbhc/wusb_dnts
-Date: June 2013
-KernelVersion: 3.11
-Contact: Thomas Pugliese <thomas.pugliese@gmail.com>
-Description:
- The device notification time slot (DNTS) count and inverval in
- milliseconds that the WUSB host should use. This controls how
- often the devices will have the opportunity to send
- notifications to the host.
-
-What: /sys/class/uwb_rc/uwb<N>/wusbhc/wusb_retry_count
-Date: June 2013
-KernelVersion: 3.11
-Contact: Thomas Pugliese <thomas.pugliese@gmail.com>
-Description:
- The number of retries that the WUSB host should attempt
- before reporting an error for a bus transaction. The range of
- valid values is [0..15], where 0 indicates infinite retries.
diff --git a/Documentation/ABI/testing/sysfs-class-vduse b/Documentation/ABI/testing/sysfs-class-vduse
new file mode 100644
index 000000000000..2f2bc5c8fc48
--- /dev/null
+++ b/Documentation/ABI/testing/sysfs-class-vduse
@@ -0,0 +1,33 @@
+What: /sys/class/vduse/
+Date: Oct 2021
+KernelVersion: 5.15
+Contact: Yongji Xie <xieyongji@bytedance.com>
+Description:
+ The vduse/ class sub-directory belongs to the VDUSE
+ framework and provides a sysfs interface for configuring
+ VDUSE devices.
+
+What: /sys/class/vduse/control/
+Date: Oct 2021
+KernelVersion: 5.15
+Contact: Yongji Xie <xieyongji@bytedance.com>
+Description:
+ This directory entry is created for the control device
+ of VDUSE framework.
+
+What: /sys/class/vduse/<device-name>/
+Date: Oct 2021
+KernelVersion: 5.15
+Contact: Yongji Xie <xieyongji@bytedance.com>
+Description:
+ This directory entry is created when a VDUSE device is
+ created via the control device.
+
+What: /sys/class/vduse/<device-name>/msg_timeout
+Date: Oct 2021
+KernelVersion: 5.15
+Contact: Yongji Xie <xieyongji@bytedance.com>
+Description:
+ (RW) The timeout (in seconds) for waiting for the control
+ message's response from userspace. Default value is 30s.
+ Writing a '0' to the file means to disable the timeout.
diff --git a/Documentation/ABI/testing/sysfs-class-watchdog b/Documentation/ABI/testing/sysfs-class-watchdog
index 585caecda3a5..70eabccf0557 100644
--- a/Documentation/ABI/testing/sysfs-class-watchdog
+++ b/Documentation/ABI/testing/sysfs-class-watchdog
@@ -6,6 +6,19 @@ Description:
device at boot. It is equivalent to WDIOC_GETBOOTSTATUS of
ioctl interface.
+What: /sys/class/watchdog/watchdogn/options
+Date: April 2023
+Contact: Thomas Weißschuh
+Description:
+ It is a read only file. It contains options of watchdog device.
+
+What: /sys/class/watchdog/watchdogn/fw_version
+Date: April 2023
+Contact: Thomas Weißschuh
+Description:
+ It is a read only file. It contains firmware version of
+ watchdog device.
+
What: /sys/class/watchdog/watchdogn/identity
Date: August 2015
Contact: Wim Van Sebroeck <wim@iguana.be>
@@ -63,7 +76,7 @@ Description:
timeout when the pretimeout interrupt is delivered. Pretimeout
is an optional feature.
-What: /sys/class/watchdog/watchdogn/pretimeout_avaialable_governors
+What: /sys/class/watchdog/watchdogn/pretimeout_available_governors
Date: February 2017
Contact: Wim Van Sebroeck <wim@iguana.be>
Description:
diff --git a/Documentation/ABI/testing/sysfs-devices-mapping b/Documentation/ABI/testing/sysfs-devices-mapping
index 8d202bac9394..2eee1446ad4c 100644
--- a/Documentation/ABI/testing/sysfs-devices-mapping
+++ b/Documentation/ABI/testing/sysfs-devices-mapping
@@ -1,6 +1,6 @@
What: /sys/devices/uncore_iio_x/dieX
Date: February 2020
-Contact: Roman Sudarikov <roman.sudarikov@linux.intel.com>
+Contact: Alexander Antonov <alexander.antonov@linux.intel.com>
Description:
Each IIO stack (PCIe root port) has its own IIO PMON block, so
each dieX file (where X is die number) holds "Segment:Root Bus"
@@ -32,3 +32,31 @@ Description:
IIO PMU 0 on die 1 belongs to PCI RP on bus 0x40, domain 0x0000
IIO PMU 0 on die 2 belongs to PCI RP on bus 0x80, domain 0x0000
IIO PMU 0 on die 3 belongs to PCI RP on bus 0xc0, domain 0x0000
+
+What: /sys/devices/uncore_upi_x/dieX
+Date: March 2022
+Contact: Alexander Antonov <alexander.antonov@linux.intel.com>
+Description:
+ Each /sys/devices/uncore_upi_X/dieY file holds "upi_Z,die_W"
+ value that means UPI link number X on die Y is connected to UPI
+ link Z on die W and this link between sockets can be monitored
+ by UPI PMON block.
+ For example, 4-die Sapphire Rapids platform has the following
+ UPI 0 topology::
+
+ # tail /sys/devices/uncore_upi_0/die*
+ ==> /sys/devices/uncore_upi_0/die0 <==
+ upi_1,die_1
+ ==> /sys/devices/uncore_upi_0/die1 <==
+ upi_0,die_3
+ ==> /sys/devices/uncore_upi_0/die2 <==
+ upi_1,die_3
+ ==> /sys/devices/uncore_upi_0/die3 <==
+ upi_0,die_1
+
+ Which means::
+
+ UPI link 0 on die 0 is connected to UPI link 1 on die 1
+ UPI link 0 on die 1 is connected to UPI link 0 on die 3
+ UPI link 0 on die 2 is connected to UPI link 1 on die 3
+ UPI link 0 on die 3 is connected to UPI link 0 on die 1 \ No newline at end of file
diff --git a/Documentation/ABI/testing/sysfs-devices-memory b/Documentation/ABI/testing/sysfs-devices-memory
index d8b0f80b9e33..cec65827e602 100644
--- a/Documentation/ABI/testing/sysfs-devices-memory
+++ b/Documentation/ABI/testing/sysfs-devices-memory
@@ -110,3 +110,11 @@ Description:
link is created for memory section 9 on node0.
/sys/devices/system/node/node0/memory9 -> ../../memory/memory9
+
+What: /sys/devices/system/memory/crash_hotplug
+Date: Aug 2023
+Contact: Linux kernel mailing list <linux-kernel@vger.kernel.org>
+Description:
+ (RO) indicates whether or not the kernel updates relevant kexec
+ segments on memory hot un/plug and/or on/offline events, avoiding the
+ need to reload kdump kernel.
diff --git a/Documentation/ABI/testing/sysfs-devices-online b/Documentation/ABI/testing/sysfs-devices-online
index f990026c0740..c3359fec2980 100644
--- a/Documentation/ABI/testing/sysfs-devices-online
+++ b/Documentation/ABI/testing/sysfs-devices-online
@@ -17,4 +17,4 @@ Description:
After a successful execution of the bus type's .offline()
callback the device cannot be used for any purpose until either
it is removed (i.e. device_del() is called for it), or its bus
- type's .online() is exeucted successfully.
+ type's .online() is executed successfully.
diff --git a/Documentation/ABI/testing/sysfs-devices-pci-host-bridge b/Documentation/ABI/testing/sysfs-devices-pci-host-bridge
new file mode 100644
index 000000000000..b91ec3450811
--- /dev/null
+++ b/Documentation/ABI/testing/sysfs-devices-pci-host-bridge
@@ -0,0 +1,45 @@
+What: /sys/devices/pciDDDD:BB
+ /sys/devices/.../pciDDDD:BB
+Contact: linux-pci@vger.kernel.org
+Description:
+ A PCI host bridge device parents a PCI bus device topology. PCI
+ controllers may also parent host bridges. The DDDD:BB format
+ conveys the PCI domain (ACPI segment) number and root bus number
+ (in hexadecimal) of the host bridge. Note that the domain number
+ may be larger than the 16-bits that the "DDDD" format implies
+ for emulated host-bridges.
+
+What: pciDDDD:BB/firmware_node
+Contact: linux-pci@vger.kernel.org
+Description:
+ (RO) Symlink to the platform firmware device object "companion"
+ of the host bridge. For example, an ACPI device with an _HID of
+ PNP0A08 (/sys/devices/LNXSYSTM:00/LNXSYBUS:00/PNP0A08:00). See
+ /sys/devices/pciDDDD:BB entry for details about the DDDD:BB
+ format.
+
+What: pciDDDD:BB/streamH.R.E
+Contact: linux-pci@vger.kernel.org
+Description:
+ (RO) When a platform has established a secure connection, PCIe
+ IDE, between two Partner Ports, this symlink appears. A stream
+ consumes a Stream ID slot in each of the Host bridge (H), Root
+ Port (R) and Endpoint (E). The link points to the Endpoint PCI
+ device in the Selective IDE Stream pairing. Specifically, "R"
+ and "E" represent the assigned Selective IDE Stream Register
+ Block in the Root Port and Endpoint, and "H" represents a
+ platform specific pool of stream resources shared by the Root
+ Ports in a host bridge. See /sys/devices/pciDDDD:BB entry for
+ details about the DDDD:BB format.
+
+What: pciDDDD:BB/available_secure_streams
+Contact: linux-pci@vger.kernel.org
+Description:
+ (RO) When a host bridge has Root Ports that support PCIe IDE
+ (link encryption and integrity protection) there may be a
+ limited number of Selective IDE Streams that can be used for
+ establishing new end-to-end secure links. This attribute
+ decrements upon secure link setup, and increments upon secure
+ link teardown. The in-use stream count is determined by counting
+ stream symlinks. See /sys/devices/pciDDDD:BB entry for details
+ about the DDDD:BB format.
diff --git a/Documentation/ABI/testing/sysfs-devices-physical_location b/Documentation/ABI/testing/sysfs-devices-physical_location
new file mode 100644
index 000000000000..202324b87083
--- /dev/null
+++ b/Documentation/ABI/testing/sysfs-devices-physical_location
@@ -0,0 +1,42 @@
+What: /sys/devices/.../physical_location
+Date: March 2022
+Contact: Won Chung <wonchung@google.com>
+Description:
+ This directory contains information on physical location of
+ the device connection point with respect to the system's
+ housing.
+
+What: /sys/devices/.../physical_location/panel
+Date: March 2022
+Contact: Won Chung <wonchung@google.com>
+Description:
+ Describes which panel surface of the system’s housing the
+ device connection point resides on.
+
+What: /sys/devices/.../physical_location/vertical_position
+Date: March 2022
+Contact: Won Chung <wonchung@google.com>
+Description:
+ Describes vertical position of the device connection point on
+ the panel surface.
+
+What: /sys/devices/.../physical_location/horizontal_position
+Date: March 2022
+Contact: Won Chung <wonchung@google.com>
+Description:
+ Describes horizontal position of the device connection point on
+ the panel surface.
+
+What: /sys/devices/.../physical_location/dock
+Date: March 2022
+Contact: Won Chung <wonchung@google.com>
+Description:
+ "Yes" if the device connection point resides in a docking
+ station or a port replicator. "No" otherwise.
+
+What: /sys/devices/.../physical_location/lid
+Date: March 2022
+Contact: Won Chung <wonchung@google.com>
+Description:
+ "Yes" if the device connection point resides on the lid of
+ laptop system. "No" otherwise.
diff --git a/Documentation/ABI/testing/sysfs-devices-platform-ACPI-TAD b/Documentation/ABI/testing/sysfs-devices-platform-ACPI-TAD
index f7b360a61b21..bc44bc903bc8 100644
--- a/Documentation/ABI/testing/sysfs-devices-platform-ACPI-TAD
+++ b/Documentation/ABI/testing/sysfs-devices-platform-ACPI-TAD
@@ -74,7 +74,7 @@ Description:
Reads also cause the AC alarm timer status to be reset.
- Another way to reset the the status of the AC alarm timer is to
+ Another way to reset the status of the AC alarm timer is to
write (the number) 0 to this file.
If the status return value indicates that the timer has expired,
diff --git a/Documentation/ABI/testing/sysfs-devices-platform-kunpeng_hccs b/Documentation/ABI/testing/sysfs-devices-platform-kunpeng_hccs
new file mode 100644
index 000000000000..d1b3a95a5518
--- /dev/null
+++ b/Documentation/ABI/testing/sysfs-devices-platform-kunpeng_hccs
@@ -0,0 +1,126 @@
+What: /sys/devices/platform/HISI04Bx:00/chipX/all_linked
+What: /sys/devices/platform/HISI04Bx:00/chipX/linked_full_lane
+What: /sys/devices/platform/HISI04Bx:00/chipX/crc_err_cnt
+Date: November 2023
+KernelVersion: 6.6
+Contact: Huisong Li <lihuisong@huawei.com>
+Description:
+ The /sys/devices/platform/HISI04Bx:00/chipX/ directory
+ contains read-only attributes exposing some summarization
+ information of all HCCS ports under a specified chip.
+ The X in 'chipX' indicates the Xth chip on platform.
+
+ There are following attributes in this directory:
+
+ ================= ==== =========================================
+ all_linked: (RO) if all enabled ports on this chip are
+ linked (bool).
+ linked_full_lane: (RO) if all linked ports on this chip are full
+ lane (bool).
+ crc_err_cnt: (RO) total CRC err count for all ports on this
+ chip.
+ ================= ==== =========================================
+
+What: /sys/devices/platform/HISI04Bx:00/chipX/dieY/all_linked
+What: /sys/devices/platform/HISI04Bx:00/chipX/dieY/linked_full_lane
+What: /sys/devices/platform/HISI04Bx:00/chipX/dieY/crc_err_cnt
+Date: November 2023
+KernelVersion: 6.6
+Contact: Huisong Li <lihuisong@huawei.com>
+Description:
+ The /sys/devices/platform/HISI04Bx:00/chipX/dieY/ directory
+ contains read-only attributes exposing some summarization
+ information of all HCCS ports under a specified die.
+ The Y in 'dieY' indicates the hardware id of the die on chip who
+ has chip id X.
+
+ There are following attributes in this directory:
+
+ ================= ==== =========================================
+ all_linked: (RO) if all enabled ports on this die are
+ linked (bool).
+ linked_full_lane: (RO) if all linked ports on this die are full
+ lane (bool).
+ crc_err_cnt: (RO) total CRC err count for all ports on this
+ die.
+ ================= ==== =========================================
+
+What: /sys/devices/platform/HISI04Bx:00/chipX/dieY/hccsN/type
+What: /sys/devices/platform/HISI04Bx:00/chipX/dieY/hccsN/lane_mode
+What: /sys/devices/platform/HISI04Bx:00/chipX/dieY/hccsN/enable
+What: /sys/devices/platform/HISI04Bx:00/chipX/dieY/hccsN/cur_lane_num
+What: /sys/devices/platform/HISI04Bx:00/chipX/dieY/hccsN/link_fsm
+What: /sys/devices/platform/HISI04Bx:00/chipX/dieY/hccsN/lane_mask
+What: /sys/devices/platform/HISI04Bx:00/chipX/dieY/hccsN/crc_err_cnt
+Date: November 2023
+KernelVersion: 6.6
+Contact: Huisong Li <lihuisong@huawei.com>
+Description:
+ The /sys/devices/platform/HISI04Bx/chipX/dieX/hccsN/ directory
+ contains read-only attributes exposing information about
+ a HCCS port. The N value in 'hccsN' indicates this port id.
+ The X in 'chipX' indicates the ID of the chip to which the
+ HCCS port belongs. For example, X ranges from to 'n - 1' if the
+ chip number on platform is n.
+ The Y in 'dieY' indicates the hardware id of the die to which
+ the hccs port belongs.
+ Note: type, lane_mode and enable are fixed attributes on running
+ platform.
+
+ The HCCS port have the following attributes:
+
+ ============= ==== =============================================
+ type: (RO) port type (string), e.g. HCCS-v1 -> H32
+ lane_mode: (RO) the lane mode of this port (string), e.g. x8
+ enable: (RO) indicate if this port is enabled (bool).
+ cur_lane_num: (RO) current lane number of this port.
+ link_fsm: (RO) link finite state machine of this port.
+ lane_mask: (RO) current lane mask of this port, every bit
+ indicates a lane.
+ crc_err_cnt: (RO) CRC err count on this port.
+ ============= ==== =============================================
+
+What: /sys/devices/platform/HISI04Bx:00/used_types
+Date: August 2024
+KernelVersion: 6.12
+Contact: Huisong Li <lihuisong@huawei.com>
+Description:
+ This interface is used to show all HCCS types used on the
+ platform, like, HCCS-v1, HCCS-v2 and so on.
+
+What: /sys/devices/platform/HISI04Bx:00/available_inc_dec_lane_types
+What: /sys/devices/platform/HISI04Bx:00/dec_lane_of_type
+What: /sys/devices/platform/HISI04Bx:00/inc_lane_of_type
+Date: August 2024
+KernelVersion: 6.12
+Contact: Huisong Li <lihuisong@huawei.com>
+Description:
+ These interfaces under /sys/devices/platform/HISI04Bx/ are
+ used to support the low power consumption feature of some
+ HCCS types by changing the number of lanes used. The interfaces
+ changing the number of lanes used are 'dec_lane_of_type' and
+ 'inc_lane_of_type' which require root privileges. These
+ interfaces aren't exposed if no HCCS type on platform support
+ this feature. Please note that decreasing lane number is only
+ allowed if all the specified HCCS ports are not busy.
+
+ The low power consumption interfaces are as follows:
+
+ ============================= ==== ================================
+ available_inc_dec_lane_types: (RO) available HCCS types (string) to
+ increase and decrease the number
+ of lane used, e.g. HCCS-v2.
+ dec_lane_of_type: (WO) input HCCS type supported
+ decreasing lane to decrease the
+ used lane number of all specified
+ HCCS type ports on platform to
+ the minimum.
+ You can query the 'cur_lane_num'
+ to get the minimum lane number
+ after executing successfully.
+ inc_lane_of_type: (WO) input HCCS type supported
+ increasing lane to increase the
+ used lane number of all specified
+ HCCS type ports on platform to
+ the full lane state.
+ ============================= ==== ================================
diff --git a/Documentation/ABI/testing/sysfs-devices-platform-soc-ipa b/Documentation/ABI/testing/sysfs-devices-platform-soc-ipa
index c56dcf15bf29..364b1ba41242 100644
--- a/Documentation/ABI/testing/sysfs-devices-platform-soc-ipa
+++ b/Documentation/ABI/testing/sysfs-devices-platform-soc-ipa
@@ -46,33 +46,69 @@ Description:
that is supported by the hardware. The possible values
are "MAPv4" or "MAPv5".
+What: .../XXXXXXX.ipa/endpoint_id/
+Date: July 2022
+KernelVersion: v5.19
+Contact: Alex Elder <elder@kernel.org>
+Description:
+ The .../XXXXXXX.ipa/endpoint_id/ directory contains
+ attributes that define IDs associated with IPA
+ endpoints. The "rx" or "tx" in an endpoint name is
+ from the perspective of the AP. An endpoint ID is a
+ small unsigned integer.
+
+What: .../XXXXXXX.ipa/endpoint_id/modem_rx
+Date: July 2022
+KernelVersion: v5.19
+Contact: Alex Elder <elder@kernel.org>
+Description:
+ The .../XXXXXXX.ipa/endpoint_id/modem_rx file contains
+ the ID of the AP endpoint on which packets originating
+ from the embedded modem are received.
+
+What: .../XXXXXXX.ipa/endpoint_id/modem_tx
+Date: July 2022
+KernelVersion: v5.19
+Contact: Alex Elder <elder@kernel.org>
+Description:
+ The .../XXXXXXX.ipa/endpoint_id/modem_tx file contains
+ the ID of the AP endpoint on which packets destined
+ for the embedded modem are sent.
+
+What: .../XXXXXXX.ipa/endpoint_id/monitor_rx
+Date: July 2022
+KernelVersion: v5.19
+Contact: Alex Elder <elder@kernel.org>
+Description:
+ The .../XXXXXXX.ipa/endpoint_id/monitor_rx file contains
+ the ID of the AP endpoint on which IPA "monitor" data is
+ received. The monitor endpoint supplies replicas of
+ packets that enter the IPA hardware for processing.
+ Each replicated packet is preceded by a fixed-size "ODL"
+ header (see .../XXXXXXX.ipa/feature/monitor, above).
+ Large packets are truncated, to reduce the bandwidth
+ required to provide the monitor function.
+
What: .../XXXXXXX.ipa/modem/
Date: June 2021
KernelVersion: v5.14
Contact: Alex Elder <elder@kernel.org>
Description:
- The .../XXXXXXX.ipa/modem/ directory contains a set of
- attributes describing properties of the modem execution
- environment reachable by the IPA hardware.
+ The .../XXXXXXX.ipa/modem/ directory contains attributes
+ describing properties of the modem embedded in the SoC.
What: .../XXXXXXX.ipa/modem/rx_endpoint_id
Date: June 2021
KernelVersion: v5.14
Contact: Alex Elder <elder@kernel.org>
Description:
- The .../XXXXXXX.ipa/feature/rx_endpoint_id file contains
- the AP endpoint ID that receives packets originating from
- the modem execution environment. The "rx" is from the
- perspective of the AP; this endpoint is considered an "IPA
- producer". An endpoint ID is a small unsigned integer.
+ The .../XXXXXXX.ipa/modem/rx_endpoint_id file duplicates
+ the value found in .../XXXXXXX.ipa/endpoint_id/modem_rx.
What: .../XXXXXXX.ipa/modem/tx_endpoint_id
Date: June 2021
KernelVersion: v5.14
Contact: Alex Elder <elder@kernel.org>
Description:
- The .../XXXXXXX.ipa/feature/tx_endpoint_id file contains
- the AP endpoint ID used to transmit packets destined for
- the modem execution environment. The "tx" is from the
- perspective of the AP; this endpoint is considered an "IPA
- consumer". An endpoint ID is a small unsigned integer.
+ The .../XXXXXXX.ipa/modem/tx_endpoint_id file duplicates
+ the value found in .../XXXXXXX.ipa/endpoint_id/modem_tx.
diff --git a/Documentation/ABI/testing/sysfs-devices-power b/Documentation/ABI/testing/sysfs-devices-power
index 1b2a2d41ff80..9bf7c8a267c5 100644
--- a/Documentation/ABI/testing/sysfs-devices-power
+++ b/Documentation/ABI/testing/sysfs-devices-power
@@ -1,6 +1,6 @@
What: /sys/devices/.../power/
Date: January 2009
-Contact: Rafael J. Wysocki <rjw@rjwysocki.net>
+Contact: Rafael J. Wysocki <rafael@kernel.org>
Description:
The /sys/devices/.../power directory contains attributes
allowing the user space to check and modify some power
@@ -8,7 +8,7 @@ Description:
What: /sys/devices/.../power/wakeup
Date: January 2009
-Contact: Rafael J. Wysocki <rjw@rjwysocki.net>
+Contact: Rafael J. Wysocki <rafael@kernel.org>
Description:
The /sys/devices/.../power/wakeup attribute allows the user
space to check if the device is enabled to wake up the system
@@ -34,7 +34,7 @@ Description:
What: /sys/devices/.../power/control
Date: January 2009
-Contact: Rafael J. Wysocki <rjw@rjwysocki.net>
+Contact: Rafael J. Wysocki <rafael@kernel.org>
Description:
The /sys/devices/.../power/control attribute allows the user
space to control the run-time power management of the device.
@@ -53,10 +53,10 @@ Description:
What: /sys/devices/.../power/async
Date: January 2009
-Contact: Rafael J. Wysocki <rjw@rjwysocki.net>
+Contact: Rafael J. Wysocki <rafael@kernel.org>
Description:
The /sys/devices/.../async attribute allows the user space to
- enable or diasble the device's suspend and resume callbacks to
+ enable or disable the device's suspend and resume callbacks to
be executed asynchronously (ie. in separate threads, in parallel
with the main suspend/resume thread) during system-wide power
transitions (eg. suspend to RAM, hibernation).
@@ -79,7 +79,7 @@ Description:
What: /sys/devices/.../power/wakeup_count
Date: September 2010
-Contact: Rafael J. Wysocki <rjw@rjwysocki.net>
+Contact: Rafael J. Wysocki <rafael@kernel.org>
Description:
The /sys/devices/.../wakeup_count attribute contains the number
of signaled wakeup events associated with the device. This
@@ -90,7 +90,7 @@ Description:
What: /sys/devices/.../power/wakeup_active_count
Date: September 2010
-Contact: Rafael J. Wysocki <rjw@rjwysocki.net>
+Contact: Rafael J. Wysocki <rafael@kernel.org>
Description:
The /sys/devices/.../wakeup_active_count attribute contains the
number of times the processing of wakeup events associated with
@@ -102,7 +102,7 @@ Description:
What: /sys/devices/.../power/wakeup_abort_count
Date: February 2012
-Contact: Rafael J. Wysocki <rjw@rjwysocki.net>
+Contact: Rafael J. Wysocki <rafael@kernel.org>
Description:
The /sys/devices/.../wakeup_abort_count attribute contains the
number of times the processing of a wakeup event associated with
@@ -114,7 +114,7 @@ Description:
What: /sys/devices/.../power/wakeup_expire_count
Date: February 2012
-Contact: Rafael J. Wysocki <rjw@rjwysocki.net>
+Contact: Rafael J. Wysocki <rafael@kernel.org>
Description:
The /sys/devices/.../wakeup_expire_count attribute contains the
number of times a wakeup event associated with the device has
@@ -126,7 +126,7 @@ Description:
What: /sys/devices/.../power/wakeup_active
Date: September 2010
-Contact: Rafael J. Wysocki <rjw@rjwysocki.net>
+Contact: Rafael J. Wysocki <rafael@kernel.org>
Description:
The /sys/devices/.../wakeup_active attribute contains either 1,
or 0, depending on whether or not a wakeup event associated with
@@ -138,7 +138,7 @@ Description:
What: /sys/devices/.../power/wakeup_total_time_ms
Date: September 2010
-Contact: Rafael J. Wysocki <rjw@rjwysocki.net>
+Contact: Rafael J. Wysocki <rafael@kernel.org>
Description:
The /sys/devices/.../wakeup_total_time_ms attribute contains
the total time of processing wakeup events associated with the
@@ -149,7 +149,7 @@ Description:
What: /sys/devices/.../power/wakeup_max_time_ms
Date: September 2010
-Contact: Rafael J. Wysocki <rjw@rjwysocki.net>
+Contact: Rafael J. Wysocki <rafael@kernel.org>
Description:
The /sys/devices/.../wakeup_max_time_ms attribute contains
the maximum time of processing a single wakeup event associated
@@ -161,7 +161,7 @@ Description:
What: /sys/devices/.../power/wakeup_last_time_ms
Date: September 2010
-Contact: Rafael J. Wysocki <rjw@rjwysocki.net>
+Contact: Rafael J. Wysocki <rafael@kernel.org>
Description:
The /sys/devices/.../wakeup_last_time_ms attribute contains
the value of the monotonic clock corresponding to the time of
@@ -173,7 +173,7 @@ Description:
What: /sys/devices/.../power/wakeup_prevent_sleep_time_ms
Date: February 2012
-Contact: Rafael J. Wysocki <rjw@rjwysocki.net>
+Contact: Rafael J. Wysocki <rafael@kernel.org>
Description:
The /sys/devices/.../wakeup_prevent_sleep_time_ms attribute
contains the total time the device has been preventing
@@ -203,7 +203,7 @@ Description:
What: /sys/devices/.../power/pm_qos_resume_latency_us
Date: March 2012
-Contact: Rafael J. Wysocki <rjw@rjwysocki.net>
+Contact: Rafael J. Wysocki <rafael@kernel.org>
Description:
The /sys/devices/.../power/pm_qos_resume_latency_us attribute
contains the PM QoS resume latency limit for the given device,
@@ -223,7 +223,7 @@ Description:
What: /sys/devices/.../power/pm_qos_latency_tolerance_us
Date: January 2014
-Contact: Rafael J. Wysocki <rjw@rjwysocki.net>
+Contact: Rafael J. Wysocki <rafael@kernel.org>
Description:
The /sys/devices/.../power/pm_qos_latency_tolerance_us attribute
contains the PM QoS active state latency tolerance limit for the
@@ -248,7 +248,7 @@ Description:
What: /sys/devices/.../power/pm_qos_no_power_off
Date: September 2012
-Contact: Rafael J. Wysocki <rjw@rjwysocki.net>
+Contact: Rafael J. Wysocki <rafael@kernel.org>
Description:
The /sys/devices/.../power/pm_qos_no_power_off attribute
is used for manipulating the PM QoS "no power off" flag. If
@@ -263,7 +263,7 @@ Description:
What: /sys/devices/.../power/runtime_status
Date: April 2010
-Contact: Rafael J. Wysocki <rjw@rjwysocki.net>
+Contact: Rafael J. Wysocki <rafael@kernel.org>
Description:
The /sys/devices/.../power/runtime_status attribute contains
the current runtime PM status of the device, which may be
@@ -274,15 +274,15 @@ What: /sys/devices/.../power/runtime_active_time
Date: Jul 2010
Contact: Arjan van de Ven <arjan@linux.intel.com>
Description:
- Reports the total time that the device has been active.
- Used for runtime PM statistics.
+ Reports the total time that the device has been active, in
+ milliseconds. Used for runtime PM statistics.
What: /sys/devices/.../power/runtime_suspended_time
Date: Jul 2010
Contact: Arjan van de Ven <arjan@linux.intel.com>
Description:
- Reports total time that the device has been suspended.
- Used for runtime PM statistics.
+ Reports total time that the device has been suspended, in
+ milliseconds. Used for runtime PM statistics.
What: /sys/devices/.../power/runtime_usage
Date: Apr 2010
@@ -303,5 +303,5 @@ Date: Apr 2010
Contact: Dominik Brodowski <linux@dominikbrodowski.net>
Description:
Reports the runtime PM children usage count of a device, or
- 0 if the the children will be ignored.
+ 0 if the children will be ignored.
diff --git a/Documentation/ABI/testing/sysfs-devices-soc b/Documentation/ABI/testing/sysfs-devices-soc
index ea999e292f11..5269808ec35f 100644
--- a/Documentation/ABI/testing/sysfs-devices-soc
+++ b/Documentation/ABI/testing/sysfs-devices-soc
@@ -1,6 +1,6 @@
What: /sys/devices/socX
Date: January 2012
-contact: Lee Jones <lee.jones@linaro.org>
+contact: Lee Jones <lee@kernel.org>
Description:
The /sys/devices/ directory contains a sub-directory for each
System-on-Chip (SoC) device on a running platform. Information
@@ -14,14 +14,14 @@ Description:
What: /sys/devices/socX/machine
Date: January 2012
-contact: Lee Jones <lee.jones@linaro.org>
+contact: Lee Jones <lee@kernel.org>
Description:
Read-only attribute common to all SoCs. Contains the SoC machine
name (e.g. Ux500).
What: /sys/devices/socX/family
Date: January 2012
-contact: Lee Jones <lee.jones@linaro.org>
+contact: Lee Jones <lee@kernel.org>
Description:
Read-only attribute common to all SoCs. Contains SoC family name
(e.g. DB8500).
@@ -59,7 +59,7 @@ Description:
What: /sys/devices/socX/soc_id
Date: January 2012
-contact: Lee Jones <lee.jones@linaro.org>
+contact: Lee Jones <lee@kernel.org>
Description:
Read-only attribute supported by most SoCs. In the case of
ST-Ericsson's chips this contains the SoC serial number.
@@ -72,21 +72,21 @@ Description:
What: /sys/devices/socX/revision
Date: January 2012
-contact: Lee Jones <lee.jones@linaro.org>
+contact: Lee Jones <lee@kernel.org>
Description:
Read-only attribute supported by most SoCs. Contains the SoC's
manufacturing revision number.
What: /sys/devices/socX/process
Date: January 2012
-contact: Lee Jones <lee.jones@linaro.org>
+contact: Lee Jones <lee@kernel.org>
Description:
Read-only attribute supported ST-Ericsson's silicon. Contains the
the process by which the silicon chip was manufactured.
What: /sys/bus/soc
Date: January 2012
-contact: Lee Jones <lee.jones@linaro.org>
+contact: Lee Jones <lee@kernel.org>
Description:
The /sys/bus/soc/ directory contains the usual sub-folders
expected under most buses. /sys/bus/soc/devices is of particular
diff --git a/Documentation/ABI/testing/sysfs-devices-state_synced b/Documentation/ABI/testing/sysfs-devices-state_synced
index 0c922d7d02fc..c64636ddac41 100644
--- a/Documentation/ABI/testing/sysfs-devices-state_synced
+++ b/Documentation/ABI/testing/sysfs-devices-state_synced
@@ -21,4 +21,9 @@ Description:
at the time the kernel starts are not affected or limited in
any way by sync_state() callbacks.
+ Writing "1" to this file will force a call to the device's
+ sync_state() function if it hasn't been called already. The
+ sync_state() call happens independent of the state of the
+ consumer devices.
+
diff --git a/Documentation/ABI/testing/sysfs-devices-system-cpu b/Documentation/ABI/testing/sysfs-devices-system-cpu
index 61f5676a7429..3a05604c21bf 100644
--- a/Documentation/ABI/testing/sysfs-devices-system-cpu
+++ b/Documentation/ABI/testing/sysfs-devices-system-cpu
@@ -67,12 +67,12 @@ Description: Discover NUMA node a CPU belongs to
/sys/devices/system/cpu/cpu42/node2 -> ../../node/node2
-What: /sys/devices/system/cpu/cpuX/topology/core_id
- /sys/devices/system/cpu/cpuX/topology/core_siblings
+What: /sys/devices/system/cpu/cpuX/topology/core_siblings
/sys/devices/system/cpu/cpuX/topology/core_siblings_list
/sys/devices/system/cpu/cpuX/topology/physical_package_id
/sys/devices/system/cpu/cpuX/topology/thread_siblings
/sys/devices/system/cpu/cpuX/topology/thread_siblings_list
+ /sys/devices/system/cpu/cpuX/topology/ppin
Date: December 2008
Contact: Linux kernel mailing list <linux-kernel@vger.kernel.org>
Description: CPU topology files that describe a logical CPU's relationship
@@ -83,10 +83,6 @@ Description: CPU topology files that describe a logical CPU's relationship
Briefly, the files above are:
- core_id: the CPU core ID of cpuX. Typically it is the
- hardware platform's identifier (rather than the kernel's).
- The actual value is architecture and platform dependent.
-
core_siblings: internal kernel map of cpuX's hardware threads
within the same physical_package_id.
@@ -103,6 +99,11 @@ Description: CPU topology files that describe a logical CPU's relationship
thread_siblings_list: human-readable list of cpuX's hardware
threads within the same core as cpuX
+ ppin: human-readable Protected Processor Identification
+ Number of the socket the cpu# belongs to. There should be
+ one per physical_package_id. File is readable only to
+ admin.
+
See Documentation/admin-guide/cputopology.rst for more information.
@@ -110,6 +111,7 @@ What: /sys/devices/system/cpu/cpuidle/available_governors
/sys/devices/system/cpu/cpuidle/current_driver
/sys/devices/system/cpu/cpuidle/current_governor
/sys/devices/system/cpu/cpuidle/current_governer_ro
+ /sys/devices/system/cpu/cpuidle/intel_c1_demotion
Date: September 2007
Contact: Linux kernel mailing list <linux-kernel@vger.kernel.org>
Description: Discover cpuidle policy and mechanism
@@ -131,7 +133,11 @@ Description: Discover cpuidle policy and mechanism
current_governor_ro: (RO) displays current idle policy.
- See Documentation/admin-guide/pm/cpuidle.rst and
+ intel_c1_demotion: (RW) enables/disables the C1 demotion
+ feature on Intel CPUs.
+
+ See Documentation/admin-guide/pm/cpuidle.rst,
+ Documentation/admin-guide/pm/intel_idle.rst, and
Documentation/driver-api/pm/cpuidle.rst for more information.
@@ -267,6 +273,60 @@ Description: Discover CPUs in the same CPU frequency coordination domain
This file is only present if the acpi-cpufreq or the cppc-cpufreq
drivers are in use.
+What: /sys/devices/system/cpu/cpuX/cpufreq/auto_select
+Date: May 2025
+Contact: linux-pm@vger.kernel.org
+Description: Autonomous selection enable
+
+ Read/write interface to control autonomous selection enable
+ Read returns autonomous selection status:
+ 0: autonomous selection is disabled
+ 1: autonomous selection is enabled
+
+ Write 'y' or '1' or 'on' to enable autonomous selection.
+ Write 'n' or '0' or 'off' to disable autonomous selection.
+
+ This file is only present if the cppc-cpufreq driver is in use.
+
+What: /sys/devices/system/cpu/cpuX/cpufreq/auto_act_window
+Date: May 2025
+Contact: linux-pm@vger.kernel.org
+Description: Autonomous activity window
+
+ This file indicates a moving utilization sensitivity window to
+ the platform's autonomous selection policy.
+
+ Read/write an integer represents autonomous activity window (in
+ microseconds) from/to this file. The max value to write is
+ 1270000000 but the max significand is 127. This means that if 128
+ is written to this file, 127 will be stored. If the value is
+ greater than 130, only the first two digits will be saved as
+ significand.
+
+ Writing a zero value to this file enable the platform to
+ determine an appropriate Activity Window depending on the workload.
+
+ Writing to this file only has meaning when Autonomous Selection is
+ enabled.
+
+ This file is only present if the cppc-cpufreq driver is in use.
+
+What: /sys/devices/system/cpu/cpuX/cpufreq/energy_performance_preference_val
+Date: May 2025
+Contact: linux-pm@vger.kernel.org
+Description: Energy performance preference
+
+ Read/write an 8-bit integer from/to this file. This file
+ represents a range of values from 0 (performance preference) to
+ 0xFF (energy efficiency preference) that influences the rate of
+ performance increase/decrease and the result of the hardware's
+ energy efficiency and performance optimization policies.
+
+ Writing to this file only has meaning when Autonomous Selection is
+ enabled.
+
+ This file is only present if the cppc-cpufreq driver is in use.
+
What: /sys/devices/system/cpu/cpu*/cache/index3/cache_disable_{0,1}
Date: August 2008
@@ -295,7 +355,7 @@ Description: Processor frequency boosting control
This switch controls the boost setting for the whole system.
Boosting allows the CPU and the firmware to run at a frequency
- beyond it's nominal limit.
+ beyond its nominal limit.
More details can be found in
Documentation/admin-guide/pm/cpufreq.rst
@@ -353,9 +413,6 @@ Description: Parameters for the CPU cache attributes
- ReadWriteAllocate:
both writeallocate and readallocate
- attributes:
- LEGACY used only on IA64 and is same as write_policy
-
coherency_line_size:
the minimum amount of data in bytes that gets
transferred from memory to cache
@@ -425,7 +482,7 @@ What: /sys/devices/system/cpu/cpuX/cpufreq/throttle_stats
/sys/devices/system/cpu/cpuX/cpufreq/throttle_stats/occ_reset
Date: March 2016
Contact: Linux kernel mailing list <linux-kernel@vger.kernel.org>
- Linux for PowerPC mailing list <linuxppc-dev@ozlabs.org>
+ Linux for PowerPC mailing list <linuxppc-dev@lists.ozlabs.org>
Description: POWERNV CPUFreq driver's frequency throttle stats directory and
attributes
@@ -475,7 +532,7 @@ What: /sys/devices/system/cpu/cpufreq/policyX/throttle_stats
/sys/devices/system/cpu/cpufreq/policyX/throttle_stats/occ_reset
Date: March 2016
Contact: Linux kernel mailing list <linux-kernel@vger.kernel.org>
- Linux for PowerPC mailing list <linuxppc-dev@ozlabs.org>
+ Linux for PowerPC mailing list <linuxppc-dev@lists.ozlabs.org>
Description: POWERNV CPUFreq driver's frequency throttle stats directory and
attributes
@@ -487,12 +544,14 @@ What: /sys/devices/system/cpu/cpuX/regs/
/sys/devices/system/cpu/cpuX/regs/identification/
/sys/devices/system/cpu/cpuX/regs/identification/midr_el1
/sys/devices/system/cpu/cpuX/regs/identification/revidr_el1
+ /sys/devices/system/cpu/cpuX/regs/identification/aidr_el1
+ /sys/devices/system/cpu/cpuX/regs/identification/smidr_el1
Date: June 2016
Contact: Linux ARM Kernel Mailing list <linux-arm-kernel@lists.infradead.org>
Description: AArch64 CPU registers
'identification' directory exposes the CPU ID registers for
- identifying model and revision of the CPU.
+ identifying model and revision of the CPU and SMCU.
What: /sys/devices/system/cpu/aarch32_el0
Date: May 2021
@@ -511,15 +570,23 @@ Description: information about CPUs heterogeneity.
cpu_capacity: capacity of cpuX.
What: /sys/devices/system/cpu/vulnerabilities
+ /sys/devices/system/cpu/vulnerabilities/gather_data_sampling
+ /sys/devices/system/cpu/vulnerabilities/indirect_target_selection
+ /sys/devices/system/cpu/vulnerabilities/itlb_multihit
+ /sys/devices/system/cpu/vulnerabilities/l1tf
+ /sys/devices/system/cpu/vulnerabilities/mds
/sys/devices/system/cpu/vulnerabilities/meltdown
+ /sys/devices/system/cpu/vulnerabilities/mmio_stale_data
+ /sys/devices/system/cpu/vulnerabilities/old_microcode
+ /sys/devices/system/cpu/vulnerabilities/reg_file_data_sampling
+ /sys/devices/system/cpu/vulnerabilities/retbleed
+ /sys/devices/system/cpu/vulnerabilities/spec_store_bypass
/sys/devices/system/cpu/vulnerabilities/spectre_v1
/sys/devices/system/cpu/vulnerabilities/spectre_v2
- /sys/devices/system/cpu/vulnerabilities/spec_store_bypass
- /sys/devices/system/cpu/vulnerabilities/l1tf
- /sys/devices/system/cpu/vulnerabilities/mds
/sys/devices/system/cpu/vulnerabilities/srbds
+ /sys/devices/system/cpu/vulnerabilities/tsa
/sys/devices/system/cpu/vulnerabilities/tsx_async_abort
- /sys/devices/system/cpu/vulnerabilities/itlb_multihit
+ /sys/devices/system/cpu/vulnerabilities/vmscape
Date: January 2018
Contact: Linux kernel mailing list <linux-kernel@vger.kernel.org>
Description: Information about CPU vulnerabilities
@@ -551,6 +618,7 @@ Description: Control Symmetric Multi Threading (SMT)
================ =========================================
"on" SMT is enabled
"off" SMT is disabled
+ "<N>" SMT is enabled with N threads per core.
"forceoff" SMT is force disabled. Cannot be changed.
"notsupported" SMT is not supported by the CPU
"notimplemented" SMT runtime toggling is not
@@ -558,7 +626,8 @@ Description: Control Symmetric Multi Threading (SMT)
================ =========================================
If control status is "forceoff" or "notsupported" writes
- are rejected.
+ are rejected. Note that enabling SMT on PowerPC skips
+ offline cores.
What: /sys/devices/system/cpu/cpuX/power/energy_perf_bias
Date: March 2019
@@ -601,10 +670,22 @@ Description: Umwait control
Note that a value of zero means there is no limit.
Low order two bits must be zero.
+What: /sys/devices/system/cpu/sev
+ /sys/devices/system/cpu/sev/vmpl
+Date: May 2024
+Contact: Linux kernel mailing list <linux-kernel@vger.kernel.org>
+Description: Secure Encrypted Virtualization (SEV) information
+
+ This directory is only present when running as an SEV-SNP guest.
+
+ vmpl: Reports the Virtual Machine Privilege Level (VMPL) at which
+ the SEV-SNP guest is running.
+
+
What: /sys/devices/system/cpu/svm
Date: August 2019
Contact: Linux kernel mailing list <linux-kernel@vger.kernel.org>
- Linux for PowerPC mailing list <linuxppc-dev@ozlabs.org>
+ Linux for PowerPC mailing list <linuxppc-dev@lists.ozlabs.org>
Description: Secure Virtual Machine
If 1, it means the system is using the Protected Execution
@@ -613,7 +694,7 @@ Description: Secure Virtual Machine
What: /sys/devices/system/cpu/cpuX/purr
Date: Apr 2005
-Contact: Linux for PowerPC mailing list <linuxppc-dev@ozlabs.org>
+Contact: Linux for PowerPC mailing list <linuxppc-dev@lists.ozlabs.org>
Description: PURR ticks for this CPU since the system boot.
The Processor Utilization Resources Register (PURR) is
@@ -624,7 +705,7 @@ Description: PURR ticks for this CPU since the system boot.
What: /sys/devices/system/cpu/cpuX/spurr
Date: Dec 2006
-Contact: Linux for PowerPC mailing list <linuxppc-dev@ozlabs.org>
+Contact: Linux for PowerPC mailing list <linuxppc-dev@lists.ozlabs.org>
Description: SPURR ticks for this CPU since the system boot.
The Scaled Processor Utilization Resources Register
@@ -636,7 +717,7 @@ Description: SPURR ticks for this CPU since the system boot.
What: /sys/devices/system/cpu/cpuX/idle_purr
Date: Apr 2020
-Contact: Linux for PowerPC mailing list <linuxppc-dev@ozlabs.org>
+Contact: Linux for PowerPC mailing list <linuxppc-dev@lists.ozlabs.org>
Description: PURR ticks for cpuX when it was idle.
This sysfs interface exposes the number of PURR ticks
@@ -644,7 +725,7 @@ Description: PURR ticks for cpuX when it was idle.
What: /sys/devices/system/cpu/cpuX/idle_spurr
Date: Apr 2020
-Contact: Linux for PowerPC mailing list <linuxppc-dev@ozlabs.org>
+Contact: Linux for PowerPC mailing list <linuxppc-dev@lists.ozlabs.org>
Description: SPURR ticks for cpuX when it was idle.
This sysfs interface exposes the number of SPURR ticks
@@ -662,10 +743,11 @@ Description: Preferred MTE tag checking mode
================ ==============================================
"sync" Prefer synchronous mode
+ "asymm" Prefer asymmetric mode
"async" Prefer asynchronous mode
================ ==============================================
- See also: Documentation/arm64/memory-tagging-extension.rst
+ See also: Documentation/arch/arm64/memory-tagging-extension.rst
What: /sys/devices/system/cpu/nohz_full
Date: Apr 2015
@@ -681,3 +763,28 @@ Description:
(RO) the list of CPUs that are isolated and don't
participate in load balancing. These CPUs are set by
boot parameter "isolcpus=".
+
+What: /sys/devices/system/cpu/housekeeping
+Date: Oct 2025
+Contact: Linux kernel mailing list <linux-kernel@vger.kernel.org>
+Description:
+ (RO) the list of logical CPUs that are designated by the kernel as
+ "housekeeping". Each CPU are responsible for handling essential
+ system-wide background tasks, including RCU callbacks, delayed
+ timer callbacks, and unbound workqueues, minimizing scheduling
+ jitter on low-latency, isolated CPUs. These CPUs are set when boot
+ parameter "isolcpus=nohz" or "nohz_full=" is specified.
+
+What: /sys/devices/system/cpu/crash_hotplug
+Date: Aug 2023
+Contact: Linux kernel mailing list <linux-kernel@vger.kernel.org>
+Description:
+ (RO) indicates whether or not the kernel updates relevant kexec
+ segments on memory hot un/plug and/or on/offline events, avoiding the
+ need to reload kdump kernel.
+
+What: /sys/devices/system/cpu/enabled
+Date: Nov 2022
+Contact: Linux kernel mailing list <linux-kernel@vger.kernel.org>
+Description:
+ (RO) the list of CPUs that can be brought online.
diff --git a/Documentation/ABI/testing/sysfs-devices-vfio-dev b/Documentation/ABI/testing/sysfs-devices-vfio-dev
new file mode 100644
index 000000000000..e21424fd9666
--- /dev/null
+++ b/Documentation/ABI/testing/sysfs-devices-vfio-dev
@@ -0,0 +1,8 @@
+What: /sys/.../<device>/vfio-dev/vfioX/
+Date: September 2022
+Contact: Yi Liu <yi.l.liu@intel.com>
+Description:
+ This directory is created when the device is bound to a
+ vfio driver. The layout under this directory matches what
+ exists for a standard 'struct device'. 'X' is a unique
+ index marking this device in vfio.
diff --git a/Documentation/ABI/testing/sysfs-devices-virtual-misc-tdx_guest b/Documentation/ABI/testing/sysfs-devices-virtual-misc-tdx_guest
new file mode 100644
index 000000000000..8fca56c8c9df
--- /dev/null
+++ b/Documentation/ABI/testing/sysfs-devices-virtual-misc-tdx_guest
@@ -0,0 +1,63 @@
+What: /sys/devices/virtual/misc/tdx_guest/measurements/MRNAME[:HASH]
+Date: April, 2025
+KernelVersion: v6.16
+Contact: linux-coco@lists.linux.dev
+Description:
+ Value of a TDX measurement register (MR). MRNAME and HASH above
+ are placeholders. The optional suffix :HASH is used for MRs
+ that have associated hash algorithms. See below for a complete
+ list of TDX MRs exposed via sysfs. Refer to Intel TDX Module
+ ABI Specification for the definition of TDREPORT and the full
+ list of TDX measurements.
+
+ Intel TDX Module ABI Specification can be found at:
+ https://www.intel.com/content/www/us/en/developer/tools/trust-domain-extensions/documentation.html#architecture
+
+ See also:
+ https://docs.kernel.org/driver-api/coco/measurement-registers.html
+
+What: /sys/devices/virtual/misc/tdx_guest/measurements/mrconfigid
+Date: April, 2025
+KernelVersion: v6.16
+Contact: linux-coco@lists.linux.dev
+Description:
+ (RO) MRCONFIGID - 48-byte immutable storage typically used for
+ software-defined ID for non-owner-defined configuration of the
+ guest TD – e.g., run-time or OS configuration.
+
+What: /sys/devices/virtual/misc/tdx_guest/measurements/mrowner
+Date: April, 2025
+KernelVersion: v6.16
+Contact: linux-coco@lists.linux.dev
+Description:
+ (RO) MROWNER - 48-byte immutable storage typically used for
+ software-defined ID for the guest TD’s owner.
+
+What: /sys/devices/virtual/misc/tdx_guest/measurements/mrownerconfig
+Date: April, 2025
+KernelVersion: v6.16
+Contact: linux-coco@lists.linux.dev
+Description:
+ (RO) MROWNERCONFIG - 48-byte immutable storage typically used
+ for software-defined ID for owner-defined configuration of the
+ guest TD – e.g., specific to the workload rather than the
+ run-time or OS.
+
+What: /sys/devices/virtual/misc/tdx_guest/measurements/mrtd:sha384
+Date: April, 2025
+KernelVersion: v6.16
+Contact: linux-coco@lists.linux.dev
+Description:
+ (RO) MRTD - Measurement of the initial contents of the TD.
+
+What: /sys/devices/virtual/misc/tdx_guest/measurements/rtmr[0123]:sha384
+Date: April, 2025
+KernelVersion: v6.16
+Contact: linux-coco@lists.linux.dev
+Description:
+ (RW) RTMR[0123] - 4 Run-Time extendable Measurement Registers.
+ Read from any of these returns the current value of the
+ corresponding RTMR. Write extends the written buffer to the
+ RTMR. All writes must start at offset 0 and be 48 bytes in
+ size. Partial writes will result in EINVAL returned by the
+ write() syscall.
diff --git a/Documentation/ABI/testing/sysfs-driver-amd-sfh b/Documentation/ABI/testing/sysfs-driver-amd-sfh
new file mode 100644
index 000000000000..c053126a83bb
--- /dev/null
+++ b/Documentation/ABI/testing/sysfs-driver-amd-sfh
@@ -0,0 +1,13 @@
+What: /sys/bus/pci/drivers/pcie_mp2_amd/*/hpd
+Date: April 2025
+Contact: mario.limonciello@amd.com
+Description:
+ Human presence detection (HPD) enable/disable.
+ When HPD is enabled, the device will be able to detect the
+ presence of a human and will send an interrupt that can be
+ used to wake the system from a low power state.
+ When HPD is disabled, the device will not be able to detect
+ the presence of a human.
+
+ Access: Read/Write
+ Valid values: enabled/disabled
diff --git a/Documentation/ABI/testing/sysfs-driver-aspeed-uart-routing b/Documentation/ABI/testing/sysfs-driver-aspeed-uart-routing
index b363827da437..910df0e5815a 100644
--- a/Documentation/ABI/testing/sysfs-driver-aspeed-uart-routing
+++ b/Documentation/ABI/testing/sysfs-driver-aspeed-uart-routing
@@ -1,4 +1,4 @@
-What: /sys/bus/platform/drivers/aspeed-uart-routing/*/uart*
+What: /sys/bus/platform/drivers/aspeed-uart-routing/\*/uart\*
Date: September 2021
Contact: Oskar Senft <osk@google.com>
Chia-Wei Wang <chiawei_wang@aspeedtech.com>
@@ -9,7 +9,7 @@ Description: Selects the RX source of the UARTx device.
depends on the selected file.
e.g.
- cat /sys/bus/platform/drivers/aspeed-uart-routing/*.uart_routing/uart1
+ cat /sys/bus/platform/drivers/aspeed-uart-routing/\*.uart_routing/uart1
[io1] io2 io3 io4 uart2 uart3 uart4 io6
In this case, UART1 gets its input from IO1 (physical serial port 1).
@@ -17,7 +17,7 @@ Description: Selects the RX source of the UARTx device.
Users: OpenBMC. Proposed changes should be mailed to
openbmc@lists.ozlabs.org
-What: /sys/bus/platform/drivers/aspeed-uart-routing/*/io*
+What: /sys/bus/platform/drivers/aspeed-uart-routing/\*/io\*
Date: September 2021
Contact: Oskar Senft <osk@google.com>
Chia-Wei Wang <chiawei_wang@aspeedtech.com>
diff --git a/Documentation/ABI/testing/sysfs-driver-bd9571mwv-regulator b/Documentation/ABI/testing/sysfs-driver-bd9571mwv-regulator
index 42214b4ff14a..90596d8bb51c 100644
--- a/Documentation/ABI/testing/sysfs-driver-bd9571mwv-regulator
+++ b/Documentation/ABI/testing/sysfs-driver-bd9571mwv-regulator
@@ -26,6 +26,6 @@ Description: Read/write the current state of DDR Backup Mode, which controls
DDR Backup Mode must be explicitly enabled by the user,
to invoke step 1.
- See also Documentation/devicetree/bindings/mfd/bd9571mwv.txt.
+ See also Documentation/devicetree/bindings/mfd/rohm,bd9571mwv.yaml.
Users: User space applications for embedded boards equipped with a
BD9571MWV PMIC.
diff --git a/Documentation/ABI/testing/sysfs-driver-ccp b/Documentation/ABI/testing/sysfs-driver-ccp
new file mode 100644
index 000000000000..ee6b787eee7a
--- /dev/null
+++ b/Documentation/ABI/testing/sysfs-driver-ccp
@@ -0,0 +1,105 @@
+What: /sys/bus/pci/devices/<BDF>/fused_part
+Date: June 2022
+KernelVersion: 5.19
+Contact: mario.limonciello@amd.com
+Description:
+ The /sys/bus/pci/devices/<BDF>/fused_part file reports
+ whether the CPU or APU has been fused to prevent tampering.
+ 0: Not fused
+ 1: Fused
+
+What: /sys/bus/pci/devices/<BDF>/debug_lock_on
+Date: June 2022
+KernelVersion: 5.19
+Contact: mario.limonciello@amd.com
+Description:
+ The /sys/bus/pci/devices/<BDF>/debug_lock_on reports
+ whether the AMD CPU or APU has been unlocked for debugging.
+ Possible values:
+ 0: Not locked
+ 1: Locked
+
+What: /sys/bus/pci/devices/<BDF>/tsme_status
+Date: June 2022
+KernelVersion: 5.19
+Contact: mario.limonciello@amd.com
+Description:
+ The /sys/bus/pci/devices/<BDF>/tsme_status file reports
+ the status of transparent secure memory encryption on AMD systems.
+ Possible values:
+ 0: Not active
+ 1: Active
+
+What: /sys/bus/pci/devices/<BDF>/anti_rollback_status
+Date: June 2022
+KernelVersion: 5.19
+Contact: mario.limonciello@amd.com
+Description:
+ The /sys/bus/pci/devices/<BDF>/anti_rollback_status file reports
+ whether the PSP is enforcing rollback protection.
+ Possible values:
+ 0: Not enforcing
+ 1: Enforcing
+
+What: /sys/bus/pci/devices/<BDF>/rpmc_production_enabled
+Date: June 2022
+KernelVersion: 5.19
+Contact: mario.limonciello@amd.com
+Description:
+ The /sys/bus/pci/devices/<BDF>/rpmc_production_enabled file reports
+ whether Replay Protected Monotonic Counter support has been enabled.
+ Possible values:
+ 0: Not enabled
+ 1: Enabled
+
+What: /sys/bus/pci/devices/<BDF>/rpmc_spirom_available
+Date: June 2022
+KernelVersion: 5.19
+Contact: mario.limonciello@amd.com
+Description:
+ The /sys/bus/pci/devices/<BDF>/rpmc_spirom_available file reports
+ whether an Replay Protected Monotonic Counter supported SPI is installed
+ on the system.
+ Possible values:
+ 0: Not present
+ 1: Present
+
+What: /sys/bus/pci/devices/<BDF>/hsp_tpm_available
+Date: June 2022
+KernelVersion: 5.19
+Contact: mario.limonciello@amd.com
+Description:
+ The /sys/bus/pci/devices/<BDF>/hsp_tpm_available file reports
+ whether the HSP TPM has been activated.
+ Possible values:
+ 0: Not activated or present
+ 1: Activated
+
+What: /sys/bus/pci/devices/<BDF>/rom_armor_enforced
+Date: June 2022
+KernelVersion: 5.19
+Contact: mario.limonciello@amd.com
+Description:
+ The /sys/bus/pci/devices/<BDF>/rom_armor_enforced file reports
+ whether RomArmor SPI protection is enforced.
+ Possible values:
+ 0: Not enforced
+ 1: Enforced
+
+What: /sys/bus/pci/devices/<BDF>/bootloader_version
+Date: June 2023
+KernelVersion: 6.4
+Contact: mario.limonciello@amd.com
+Description:
+ The /sys/bus/pci/devices/<BDF>/bootloader_version
+ file reports the firmware version of the AMD AGESA
+ bootloader.
+
+What: /sys/bus/pci/devices/<BDF>/tee_version
+Date: June 2023
+KernelVersion: 6.4
+Contact: mario.limonciello@amd.com
+Description:
+ The /sys/bus/pci/devices/<BDF>/tee_version
+ file reports the firmware version of the AMD Trusted
+ Execution Environment (TEE).
diff --git a/Documentation/ABI/testing/sysfs-driver-chromeos-acpi b/Documentation/ABI/testing/sysfs-driver-chromeos-acpi
new file mode 100644
index 000000000000..d46b1c85840d
--- /dev/null
+++ b/Documentation/ABI/testing/sysfs-driver-chromeos-acpi
@@ -0,0 +1,152 @@
+What: /sys/bus/platform/devices/GGL0001:*/BINF.2
+ /sys/bus/platform/devices/GOOG0016:*/BINF.2
+Date: May 2022
+KernelVersion: 5.19
+Description:
+ Returns active EC firmware of current boot (boolean).
+
+ == ===============================
+ 0 Read only (recovery) firmware.
+ 1 Rewritable firmware.
+ == ===============================
+
+What: /sys/bus/platform/devices/GGL0001:*/BINF.3
+ /sys/bus/platform/devices/GOOG0016:*/BINF.3
+Date: May 2022
+KernelVersion: 5.19
+Description:
+ Returns main firmware type for current boot (integer).
+
+ == =====================================
+ 0 Recovery.
+ 1 Normal.
+ 2 Developer.
+ 3 Netboot (factory installation only).
+ == =====================================
+
+What: /sys/bus/platform/devices/GGL0001:*/CHSW
+ /sys/bus/platform/devices/GOOG0016:*/CHSW
+Date: May 2022
+KernelVersion: 5.19
+Description:
+ Returns switch position for Chrome OS specific hardware
+ switches when the firmware is booted (integer).
+
+ ==== ===========================================
+ 0 No changes.
+ 2 Recovery button was pressed.
+ 4 Recovery button was pressed (EC firmware).
+ 32 Developer switch was enabled.
+ 512 Firmware write protection was disabled.
+ ==== ===========================================
+
+What: /sys/bus/platform/devices/GGL0001:*/FMAP
+ /sys/bus/platform/devices/GOOG0016:*/FMAP
+Date: May 2022
+KernelVersion: 5.19
+Description:
+ Returns physical memory address of the start of the main
+ processor firmware flashmap.
+
+What: /sys/bus/platform/devices/GGL0001:*/FRID
+ /sys/bus/platform/devices/GOOG0016:*/FRID
+Date: May 2022
+KernelVersion: 5.19
+Description:
+ Returns firmware version for the read-only portion of the
+ main processor firmware.
+
+What: /sys/bus/platform/devices/GGL0001:*/FWID
+ /sys/bus/platform/devices/GOOG0016:*/FWID
+Date: May 2022
+KernelVersion: 5.19
+Description:
+ Returns firmware version for the rewritable portion of the
+ main processor firmware.
+
+What: /sys/bus/platform/devices/GGL0001:*/GPIO.X/GPIO.0
+ /sys/bus/platform/devices/GOOG0016:*/GPIO.X/GPIO.0
+Date: May 2022
+KernelVersion: 5.19
+Description:
+ Returns type of the GPIO signal for the Chrome OS specific
+ GPIO assignments (integer).
+
+ =========== ==================================
+ 1 Recovery button.
+ 2 Developer mode switch.
+ 3 Firmware write protection switch.
+ 256 to 511 Debug header GPIO 0 to GPIO 255.
+ =========== ==================================
+
+What: /sys/bus/platform/devices/GGL0001:*/GPIO.X/GPIO.1
+ /sys/bus/platform/devices/GOOG0016:*/GPIO.X/GPIO.1
+Date: May 2022
+KernelVersion: 5.19
+Description:
+ Returns signal attributes of the GPIO signal (integer bitfield).
+
+ == =======================
+ 0 Signal is active low.
+ 1 Signal is active high.
+ == =======================
+
+What: /sys/bus/platform/devices/GGL0001:*/GPIO.X/GPIO.2
+ /sys/bus/platform/devices/GOOG0016:*/GPIO.X/GPIO.2
+Date: May 2022
+KernelVersion: 5.19
+Description:
+ Returns the GPIO number on the specified GPIO
+ controller.
+
+What: /sys/bus/platform/devices/GGL0001:*/GPIO.X/GPIO.3
+ /sys/bus/platform/devices/GOOG0016:*/GPIO.X/GPIO.3
+Date: May 2022
+KernelVersion: 5.19
+Description:
+ Returns name of the GPIO controller.
+
+What: /sys/bus/platform/devices/GGL0001:*/HWID
+ /sys/bus/platform/devices/GOOG0016:*/HWID
+Date: May 2022
+KernelVersion: 5.19
+Description:
+ Returns hardware ID for the Chromebook.
+
+What: /sys/bus/platform/devices/GGL0001:*/MECK
+ /sys/bus/platform/devices/GOOG0016:*/MECK
+Date: May 2022
+KernelVersion: 5.19
+Description:
+ Returns the SHA-1 or SHA-256 hash that is read out of the
+ Management Engine extended registers during boot. The hash
+ is exported via ACPI so the OS can verify that the Management
+ Engine firmware has not changed. If Management Engine is not
+ present, or if the firmware was unable to read the extended registers, this buffer size can be zero.
+
+What: /sys/bus/platform/devices/GGL0001:*/VBNV.0
+ /sys/bus/platform/devices/GOOG0016:*/VBNV.0
+Date: May 2022
+KernelVersion: 5.19
+Description:
+ Returns offset in CMOS bank 0 of the verified boot non-volatile
+ storage block, counting from the first writable CMOS byte
+ (that is, 'offset = 0' is the byte following the 14 bytes of
+ clock data).
+
+What: /sys/bus/platform/devices/GGL0001:*/VBNV.1
+ /sys/bus/platform/devices/GOOG0016:*/VBNV.1
+Date: May 2022
+KernelVersion: 5.19
+Description:
+ Return the size in bytes of the verified boot non-volatile
+ storage block.
+
+What: /sys/bus/platform/devices/GGL0001:*/VDAT
+ /sys/bus/platform/devices/GOOG0016:*/VDAT
+Date: May 2022
+KernelVersion: 5.19
+Description:
+ Returns the verified boot data block shared between the
+ firmware verification step and the kernel verification step
+ (hex dump).
diff --git a/Documentation/ABI/testing/sysfs-driver-eud b/Documentation/ABI/testing/sysfs-driver-eud
new file mode 100644
index 000000000000..2bab0db2d2f0
--- /dev/null
+++ b/Documentation/ABI/testing/sysfs-driver-eud
@@ -0,0 +1,9 @@
+What: /sys/bus/platform/drivers/qcom_eud/.../enable
+Date: February 2022
+Contact: Souradeep Chowdhury <quic_schowdhu@quicinc.com>
+Description:
+ The Enable/Disable sysfs interface for Embedded
+ USB Debugger(EUD). This enables and disables the
+ EUD based on a 1 or a 0 value. By enabling EUD,
+ the user is able to activate the mini-usb hub of
+ EUD for debug and trace capabilities.
diff --git a/Documentation/ABI/testing/sysfs-driver-framer-pef2256 b/Documentation/ABI/testing/sysfs-driver-framer-pef2256
new file mode 100644
index 000000000000..29f97783bf07
--- /dev/null
+++ b/Documentation/ABI/testing/sysfs-driver-framer-pef2256
@@ -0,0 +1,8 @@
+What: /sys/bus/platform/devices/xxx/version
+Date: Sep 2025
+Contact: netdev@vger.kernel.org
+Description: Reports the version of the PEF2256 framer
+
+ Access: Read
+
+ Valid values: Represented as string
diff --git a/Documentation/ABI/testing/sysfs-driver-ge-achc b/Documentation/ABI/testing/sysfs-driver-ge-achc
index a9e7a079190c..c3e77def4b20 100644
--- a/Documentation/ABI/testing/sysfs-driver-ge-achc
+++ b/Documentation/ABI/testing/sysfs-driver-ge-achc
@@ -5,7 +5,7 @@ Description: Write 1 to this file to update the ACHC microcontroller
firmware via the EzPort interface. For this the kernel
will load "achc.bin" via the firmware API (so usually
from /lib/firmware). The write will block until the FW
- has either been flashed successfully or an error occured.
+ has either been flashed successfully or an error occurred.
What: /sys/bus/spi/<dev>/reset
Date: Jul 2021
diff --git a/Documentation/ABI/testing/sysfs-driver-habanalabs b/Documentation/ABI/testing/sysfs-driver-habanalabs
index 1f127f71d2b4..4244f5af4b54 100644
--- a/Documentation/ABI/testing/sysfs-driver-habanalabs
+++ b/Documentation/ABI/testing/sysfs-driver-habanalabs
@@ -1,4 +1,4 @@
-What: /sys/class/habanalabs/hl<n>/armcp_kernel_ver
+What: /sys/class/accel/accel<n>/device/armcp_kernel_ver
Date: Jan 2019
KernelVersion: 5.1
Contact: ogabbay@kernel.org
@@ -6,7 +6,7 @@ Description: Version of the Linux kernel running on the device's CPU.
Will be DEPRECATED in Linux kernel version 5.10, and be
replaced with cpucp_kernel_ver
-What: /sys/class/habanalabs/hl<n>/armcp_ver
+What: /sys/class/accel/accel<n>/device/armcp_ver
Date: Jan 2019
KernelVersion: 5.1
Contact: ogabbay@kernel.org
@@ -14,9 +14,9 @@ Description: Version of the application running on the device's CPU
Will be DEPRECATED in Linux kernel version 5.10, and be
replaced with cpucp_ver
-What: /sys/class/habanalabs/hl<n>/clk_max_freq_mhz
+What: /sys/class/accel/accel<n>/device/clk_max_freq_mhz
Date: Jun 2019
-KernelVersion: not yet upstreamed
+KernelVersion: 5.7
Contact: ogabbay@kernel.org
Description: Allows the user to set the maximum clock frequency, in MHz.
The device clock might be set to lower value than the maximum.
@@ -24,52 +24,58 @@ Description: Allows the user to set the maximum clock frequency, in MHz.
frequency value of the device clock. This property is valid
only for the Gaudi ASIC family
-What: /sys/class/habanalabs/hl<n>/clk_cur_freq_mhz
+What: /sys/class/accel/accel<n>/device/clk_cur_freq_mhz
Date: Jun 2019
-KernelVersion: not yet upstreamed
+KernelVersion: 5.7
Contact: ogabbay@kernel.org
Description: Displays the current frequency, in MHz, of the device clock.
This property is valid only for the Gaudi ASIC family
-What: /sys/class/habanalabs/hl<n>/cpld_ver
+What: /sys/class/accel/accel<n>/device/cpld_ver
Date: Jan 2019
KernelVersion: 5.1
Contact: ogabbay@kernel.org
Description: Version of the Device's CPLD F/W
-What: /sys/class/habanalabs/hl<n>/cpucp_kernel_ver
+What: /sys/class/accel/accel<n>/device/cpucp_kernel_ver
Date: Oct 2020
KernelVersion: 5.10
Contact: ogabbay@kernel.org
Description: Version of the Linux kernel running on the device's CPU
-What: /sys/class/habanalabs/hl<n>/cpucp_ver
+What: /sys/class/accel/accel<n>/device/cpucp_ver
Date: Oct 2020
KernelVersion: 5.10
Contact: ogabbay@kernel.org
Description: Version of the application running on the device's CPU
-What: /sys/class/habanalabs/hl<n>/device_type
+What: /sys/class/accel/accel<n>/device/device_type
Date: Jan 2019
KernelVersion: 5.1
Contact: ogabbay@kernel.org
Description: Displays the code name of the device according to its type.
The supported values are: "GOYA"
-What: /sys/class/habanalabs/hl<n>/eeprom
+What: /sys/class/accel/accel<n>/device/eeprom
Date: Jan 2019
KernelVersion: 5.1
Contact: ogabbay@kernel.org
Description: A binary file attribute that contains the contents of the
on-board EEPROM
-What: /sys/class/habanalabs/hl<n>/fuse_ver
+What: /sys/class/accel/accel<n>/device/fuse_ver
Date: Jan 2019
KernelVersion: 5.1
Contact: ogabbay@kernel.org
Description: Displays the device's version from the eFuse
-What: /sys/class/habanalabs/hl<n>/hard_reset
+What: /sys/class/accel/accel<n>/device/fw_os_ver
+Date: Dec 2021
+KernelVersion: 5.18
+Contact: ogabbay@kernel.org
+Description: Version of the firmware OS running on the device's CPU
+
+What: /sys/class/accel/accel<n>/device/hard_reset
Date: Jan 2019
KernelVersion: 5.1
Contact: ogabbay@kernel.org
@@ -77,14 +83,14 @@ Description: Interface to trigger a hard-reset operation for the device.
Hard-reset will reset ALL internal components of the device
except for the PCI interface and the internal PLLs
-What: /sys/class/habanalabs/hl<n>/hard_reset_cnt
+What: /sys/class/accel/accel<n>/device/hard_reset_cnt
Date: Jan 2019
KernelVersion: 5.1
Contact: ogabbay@kernel.org
Description: Displays how many times the device have undergone a hard-reset
operation since the driver was loaded
-What: /sys/class/habanalabs/hl<n>/high_pll
+What: /sys/class/accel/accel<n>/device/high_pll
Date: Jan 2019
KernelVersion: 5.1
Contact: ogabbay@kernel.org
@@ -92,7 +98,7 @@ Description: Allows the user to set the maximum clock frequency for MME, TPC
and IC when the power management profile is set to "automatic".
This property is valid only for the Goya ASIC family
-What: /sys/class/habanalabs/hl<n>/ic_clk
+What: /sys/class/accel/accel<n>/device/ic_clk
Date: Jan 2019
KernelVersion: 5.1
Contact: ogabbay@kernel.org
@@ -104,27 +110,27 @@ Description: Allows the user to set the maximum clock frequency, in Hz, of
frequency value of the IC. This property is valid only for the
Goya ASIC family
-What: /sys/class/habanalabs/hl<n>/ic_clk_curr
+What: /sys/class/accel/accel<n>/device/ic_clk_curr
Date: Jan 2019
KernelVersion: 5.1
Contact: ogabbay@kernel.org
Description: Displays the current clock frequency, in Hz, of the Interconnect
fabric. This property is valid only for the Goya ASIC family
-What: /sys/class/habanalabs/hl<n>/infineon_ver
+What: /sys/class/accel/accel<n>/device/infineon_ver
Date: Jan 2019
KernelVersion: 5.1
Contact: ogabbay@kernel.org
-Description: Version of the Device's power supply F/W code
+Description: Version of the Device's power supply F/W code. Relevant only to GOYA and GAUDI
-What: /sys/class/habanalabs/hl<n>/max_power
+What: /sys/class/accel/accel<n>/device/max_power
Date: Jan 2019
KernelVersion: 5.1
Contact: ogabbay@kernel.org
Description: Allows the user to set the maximum power consumption of the
device in milliwatts.
-What: /sys/class/habanalabs/hl<n>/mme_clk
+What: /sys/class/accel/accel<n>/device/mme_clk
Date: Jan 2019
KernelVersion: 5.1
Contact: ogabbay@kernel.org
@@ -136,21 +142,33 @@ Description: Allows the user to set the maximum clock frequency, in Hz, of
frequency value of the MME. This property is valid only for the
Goya ASIC family
-What: /sys/class/habanalabs/hl<n>/mme_clk_curr
+What: /sys/class/accel/accel<n>/device/mme_clk_curr
Date: Jan 2019
KernelVersion: 5.1
Contact: ogabbay@kernel.org
Description: Displays the current clock frequency, in Hz, of the MME compute
engine. This property is valid only for the Goya ASIC family
-What: /sys/class/habanalabs/hl<n>/pci_addr
+What: /sys/class/accel/accel<n>/device/module_id
+Date: Nov 2023
+KernelVersion: not yet upstreamed
+Contact: ogabbay@kernel.org
+Description: Displays the device's module id
+
+What: /sys/class/accel/accel<n>/device/parent_device
+Date: Nov 2023
+KernelVersion: 6.8
+Contact: ttayar@habana.ai
+Description: Displays the name of the parent device of the accel device
+
+What: /sys/class/accel/accel<n>/device/pci_addr
Date: Jan 2019
KernelVersion: 5.1
Contact: ogabbay@kernel.org
Description: Displays the PCI address of the device. This is needed so the
user would be able to open a device based on its PCI address
-What: /sys/class/habanalabs/hl<n>/pm_mng_profile
+What: /sys/class/accel/accel<n>/device/pm_mng_profile
Date: Jan 2019
KernelVersion: 5.1
Contact: ogabbay@kernel.org
@@ -164,13 +182,19 @@ Description: Power management profile. Values are "auto", "manual". In "auto"
ic_clk, mme_clk and tpc_clk. This property is valid only for
the Goya ASIC family
-What: /sys/class/habanalabs/hl<n>/preboot_btl_ver
+What: /sys/class/accel/accel<n>/device/preboot_btl_ver
Date: Jan 2019
KernelVersion: 5.1
Contact: ogabbay@kernel.org
Description: Version of the device's preboot F/W code
-What: /sys/class/habanalabs/hl<n>/soft_reset
+What: /sys/class/accel/accel<n>/device/security_enabled
+Date: Oct 2022
+KernelVersion: 6.1
+Contact: obitton@habana.ai
+Description: Displays the device's security status
+
+What: /sys/class/accel/accel<n>/device/soft_reset
Date: Jan 2019
KernelVersion: 5.1
Contact: ogabbay@kernel.org
@@ -178,26 +202,38 @@ Description: Interface to trigger a soft-reset operation for the device.
Soft-reset will reset only the compute and DMA engines of the
device
-What: /sys/class/habanalabs/hl<n>/soft_reset_cnt
+What: /sys/class/accel/accel<n>/device/soft_reset_cnt
Date: Jan 2019
KernelVersion: 5.1
Contact: ogabbay@kernel.org
Description: Displays how many times the device have undergone a soft-reset
operation since the driver was loaded
-What: /sys/class/habanalabs/hl<n>/status
+What: /sys/class/accel/accel<n>/device/status
Date: Jan 2019
KernelVersion: 5.1
Contact: ogabbay@kernel.org
-Description: Status of the card: "Operational", "Malfunction", "In reset".
+Description: Status of the card:
-What: /sys/class/habanalabs/hl<n>/thermal_ver
+ * "operational" - Device is available for work.
+ * "in reset" - Device is going through reset, will be
+ available shortly.
+ * "disabled" - Device is not usable.
+ * "needs reset" - Device is not usable until a hard reset
+ is initiated.
+ * "in device creation" - Device is not available yet, as it
+ is still initializing.
+ * "in reset after device release" - Device is going through
+ a compute-reset which is executed after a device release
+ (relevant for Gaudi2 only).
+
+What: /sys/class/accel/accel<n>/device/thermal_ver
Date: Jan 2019
KernelVersion: 5.1
Contact: ogabbay@kernel.org
Description: Version of the Device's thermal daemon
-What: /sys/class/habanalabs/hl<n>/tpc_clk
+What: /sys/class/accel/accel<n>/device/tpc_clk
Date: Jan 2019
KernelVersion: 5.1
Contact: ogabbay@kernel.org
@@ -209,15 +245,21 @@ Description: Allows the user to set the maximum clock frequency, in Hz, of
frequency value of the TPC. This property is valid only for
Goya ASIC family
-What: /sys/class/habanalabs/hl<n>/tpc_clk_curr
+What: /sys/class/accel/accel<n>/device/tpc_clk_curr
Date: Jan 2019
KernelVersion: 5.1
Contact: ogabbay@kernel.org
Description: Displays the current clock frequency, in Hz, of the TPC compute
engines. This property is valid only for the Goya ASIC family
-What: /sys/class/habanalabs/hl<n>/uboot_ver
+What: /sys/class/accel/accel<n>/device/uboot_ver
Date: Jan 2019
KernelVersion: 5.1
Contact: ogabbay@kernel.org
-Description: Version of the u-boot running on the device's CPU \ No newline at end of file
+Description: Version of the u-boot running on the device's CPU
+
+What: /sys/class/accel/accel<n>/device/vrm_ver
+Date: Jan 2022
+KernelVersion: 5.17
+Contact: ogabbay@kernel.org
+Description: Version of the Device's Voltage Regulator Monitor F/W code. N/A to GOYA and GAUDI
diff --git a/Documentation/ABI/testing/sysfs-driver-hid-appletb-kbd b/Documentation/ABI/testing/sysfs-driver-hid-appletb-kbd
new file mode 100644
index 000000000000..8c9718d83e9d
--- /dev/null
+++ b/Documentation/ABI/testing/sysfs-driver-hid-appletb-kbd
@@ -0,0 +1,13 @@
+What: /sys/bus/hid/drivers/hid-appletb-kbd/<dev>/mode
+Date: March, 2025
+KernelVersion: 6.15
+Contact: linux-input@vger.kernel.org
+Description:
+ The set of keys displayed on the Touch Bar.
+ Valid values are:
+ == =================
+ 0 Escape key only
+ 1 Function keys
+ 2 Media/brightness keys
+ 3 None
+ == =================
diff --git a/Documentation/ABI/testing/sysfs-driver-hid-corsair-void b/Documentation/ABI/testing/sysfs-driver-hid-corsair-void
new file mode 100644
index 000000000000..83fa625c0025
--- /dev/null
+++ b/Documentation/ABI/testing/sysfs-driver-hid-corsair-void
@@ -0,0 +1,38 @@
+What: /sys/bus/hid/drivers/hid-corsair-void/<dev>/fw_version_headset
+Date: January 2024
+KernelVersion: 6.13
+Contact: Stuart Hayhurst <stuart.a.hayhurst@gmail.com>
+Description: (R) The firmware version of the headset
+ * Returns -ENODATA if no version was reported
+
+What: /sys/bus/hid/drivers/hid-corsair-void/<dev>/fw_version_receiver
+Date: January 2024
+KernelVersion: 6.13
+Contact: Stuart Hayhurst <stuart.a.hayhurst@gmail.com>
+Description: (R) The firmware version of the receiver
+
+What: /sys/bus/hid/drivers/hid-corsair-void/<dev>/microphone_up
+Date: July 2023
+KernelVersion: 6.13
+Contact: Stuart Hayhurst <stuart.a.hayhurst@gmail.com>
+Description: (R) Get the physical position of the microphone
+ * 1 -> Microphone up
+ * 0 -> Microphone down
+
+What: /sys/bus/hid/drivers/hid-corsair-void/<dev>/send_alert
+Date: July 2023
+KernelVersion: 6.13
+Contact: Stuart Hayhurst <stuart.a.hayhurst@gmail.com>
+Description: (W) Play a built-in notification from the headset (0 / 1)
+
+What: /sys/bus/hid/drivers/hid-corsair-void/<dev>/set_sidetone
+Date: December 2023
+KernelVersion: 6.13
+Contact: Stuart Hayhurst <stuart.a.hayhurst@gmail.com>
+Description: (W) Set the sidetone volume (0 - sidetone_max)
+
+What: /sys/bus/hid/drivers/hid-corsair-void/<dev>/sidetone_max
+Date: July 2024
+KernelVersion: 6.13
+Contact: Stuart Hayhurst <stuart.a.hayhurst@gmail.com>
+Description: (R) Report the maximum sidetone volume
diff --git a/Documentation/ABI/testing/sysfs-driver-intel-i915-hwmon b/Documentation/ABI/testing/sysfs-driver-intel-i915-hwmon
new file mode 100644
index 000000000000..a885e5316d02
--- /dev/null
+++ b/Documentation/ABI/testing/sysfs-driver-intel-i915-hwmon
@@ -0,0 +1,93 @@
+What: /sys/bus/pci/drivers/i915/.../hwmon/hwmon<i>/in0_input
+Date: February 2023
+KernelVersion: 6.2
+Contact: intel-gfx@lists.freedesktop.org
+Description: RO. Current Voltage in millivolt.
+
+ Only supported for particular Intel i915 graphics platforms.
+
+What: /sys/bus/pci/drivers/i915/.../hwmon/hwmon<i>/power1_max
+Date: February 2023
+KernelVersion: 6.2
+Contact: intel-gfx@lists.freedesktop.org
+Description: RW. Card reactive sustained (PL1/Tau) power limit in microwatts.
+
+ The power controller will throttle the operating frequency
+ if the power averaged over a window (typically seconds)
+ exceeds this limit. A read value of 0 means that the PL1
+ power limit is disabled, writing 0 disables the
+ limit. Writing values > 0 will enable the power limit.
+
+ Only supported for particular Intel i915 graphics platforms.
+
+What: /sys/bus/pci/drivers/i915/.../hwmon/hwmon<i>/power1_rated_max
+Date: February 2023
+KernelVersion: 6.2
+Contact: intel-gfx@lists.freedesktop.org
+Description: RO. Card default power limit (default TDP setting).
+
+ Only supported for particular Intel i915 graphics platforms.
+
+What: /sys/bus/pci/drivers/i915/.../hwmon/hwmon<i>/power1_max_interval
+Date: February 2023
+KernelVersion: 6.2
+Contact: intel-gfx@lists.freedesktop.org
+Description: RW. Sustained power limit interval (Tau in PL1/Tau) in
+ milliseconds over which sustained power is averaged.
+
+ Only supported for particular Intel i915 graphics platforms.
+
+What: /sys/bus/pci/drivers/i915/.../hwmon/hwmon<i>/power1_crit
+Date: February 2023
+KernelVersion: 6.2
+Contact: intel-gfx@lists.freedesktop.org
+Description: RW. Card reactive critical (I1) power limit in microwatts.
+
+ Card reactive critical (I1) power limit in microwatts is exposed
+ for client products. The power controller will throttle the
+ operating frequency if the power averaged over a window exceeds
+ this limit.
+
+ Only supported for particular Intel i915 graphics platforms.
+
+What: /sys/bus/pci/drivers/i915/.../hwmon/hwmon<i>/curr1_crit
+Date: February 2023
+KernelVersion: 6.2
+Contact: intel-gfx@lists.freedesktop.org
+Description: RW. Card reactive critical (I1) power limit in milliamperes.
+
+ Card reactive critical (I1) power limit in milliamperes is
+ exposed for server products. The power controller will throttle
+ the operating frequency if the power averaged over a window
+ exceeds this limit.
+
+ Only supported for particular Intel i915 graphics platforms.
+
+What: /sys/bus/pci/drivers/i915/.../hwmon/hwmon<i>/energy1_input
+Date: February 2023
+KernelVersion: 6.2
+Contact: intel-gfx@lists.freedesktop.org
+Description: RO. Energy input of device or gt in microjoules.
+
+ For i915 device level hwmon devices (name "i915") this
+ reflects energy input for the entire device. For gt level
+ hwmon devices (name "i915_gtN") this reflects energy input
+ for the gt.
+
+ Only supported for particular Intel i915 graphics platforms.
+
+What: /sys/bus/pci/drivers/i915/.../hwmon/hwmon<i>/fan1_input
+Date: November 2024
+KernelVersion: 6.12
+Contact: intel-gfx@lists.freedesktop.org
+Description: RO. Fan speed of device in RPM.
+
+ Only supported for particular Intel i915 graphics platforms.
+
+What: /sys/bus/pci/drivers/i915/.../hwmon/hwmon<i>/temp1_input
+Date: November 2024
+KernelVersion: 6.12
+Contact: intel-gfx@lists.freedesktop.org
+Description: RO. GPU package temperature in millidegree Celsius.
+
+ Only supported for particular Intel i915 graphics platforms.
diff --git a/Documentation/ABI/testing/sysfs-driver-intel-m10-bmc b/Documentation/ABI/testing/sysfs-driver-intel-m10-bmc
index 9773925138af..faeae8fedb14 100644
--- a/Documentation/ABI/testing/sysfs-driver-intel-m10-bmc
+++ b/Documentation/ABI/testing/sysfs-driver-intel-m10-bmc
@@ -1,4 +1,4 @@
-What: /sys/bus/spi/devices/.../bmc_version
+What: /sys/bus/.../drivers/intel-m10-bmc/.../bmc_version
Date: June 2020
KernelVersion: 5.10
Contact: Xu Yilun <yilun.xu@intel.com>
@@ -6,7 +6,7 @@ Description: Read only. Returns the hardware build version of Intel
MAX10 BMC chip.
Format: "0x%x".
-What: /sys/bus/spi/devices/.../bmcfw_version
+What: /sys/bus/.../drivers/intel-m10-bmc/.../bmcfw_version
Date: June 2020
KernelVersion: 5.10
Contact: Xu Yilun <yilun.xu@intel.com>
@@ -14,10 +14,10 @@ Description: Read only. Returns the firmware version of Intel MAX10
BMC chip.
Format: "0x%x".
-What: /sys/bus/spi/devices/.../mac_address
+What: /sys/bus/.../drivers/intel-m10-bmc/.../mac_address
Date: January 2021
KernelVersion: 5.12
-Contact: Russ Weight <russell.h.weight@intel.com>
+Contact: Matthew Gerlach <matthew.gerlach@altera.com>
Description: Read only. Returns the first MAC address in a block
of sequential MAC addresses assigned to the board
that is managed by the Intel MAX10 BMC. It is stored in
@@ -25,10 +25,10 @@ Description: Read only. Returns the first MAC address in a block
space.
Format: "%02x:%02x:%02x:%02x:%02x:%02x".
-What: /sys/bus/spi/devices/.../mac_count
+What: /sys/bus/.../drivers/intel-m10-bmc/.../mac_count
Date: January 2021
KernelVersion: 5.12
-Contact: Russ Weight <russell.h.weight@intel.com>
+Contact: Matthew Gerlach <matthew.gerlach@altera.com>
Description: Read only. Returns the number of sequential MAC
addresses assigned to the board managed by the Intel
MAX10 BMC. This value is stored in FLASH and is mirrored
diff --git a/Documentation/ABI/testing/sysfs-driver-intel-m10-bmc-sec-update b/Documentation/ABI/testing/sysfs-driver-intel-m10-bmc-sec-update
new file mode 100644
index 000000000000..3a6ca780c75c
--- /dev/null
+++ b/Documentation/ABI/testing/sysfs-driver-intel-m10-bmc-sec-update
@@ -0,0 +1,61 @@
+What: /sys/bus/platform/drivers/intel-m10bmc-sec-update/.../security/sr_root_entry_hash
+Date: Sep 2022
+KernelVersion: 5.20
+Contact: Matthew Gerlach <matthew.gerlach@altera.com>
+Description: Read only. Returns the root entry hash for the static
+ region if one is programmed, else it returns the
+ string: "hash not programmed". This file is only
+ visible if the underlying device supports it.
+ Format: string.
+
+What: /sys/bus/platform/drivers/intel-m10bmc-sec-update/.../security/pr_root_entry_hash
+Date: Sep 2022
+KernelVersion: 5.20
+Contact: Matthew Gerlach <matthew.gerlach@altera.com>
+Description: Read only. Returns the root entry hash for the partial
+ reconfiguration region if one is programmed, else it
+ returns the string: "hash not programmed". This file
+ is only visible if the underlying device supports it.
+ Format: string.
+
+What: /sys/bus/platform/drivers/intel-m10bmc-sec-update/.../security/bmc_root_entry_hash
+Date: Sep 2022
+KernelVersion: 5.20
+Contact: Matthew Gerlach <matthew.gerlach@altera.com>
+Description: Read only. Returns the root entry hash for the BMC image
+ if one is programmed, else it returns the string:
+ "hash not programmed". This file is only visible if the
+ underlying device supports it.
+ Format: string.
+
+What: /sys/bus/platform/drivers/intel-m10bmc-sec-update/.../security/sr_canceled_csks
+Date: Sep 2022
+KernelVersion: 5.20
+Contact: Matthew Gerlach <matthew.gerlach@altera.com>
+Description: Read only. Returns a list of indices for canceled code
+ signing keys for the static region. The standard bitmap
+ list format is used (e.g. "1,2-6,9").
+
+What: /sys/bus/platform/drivers/intel-m10bmc-sec-update/.../security/pr_canceled_csks
+Date: Sep 2022
+KernelVersion: 5.20
+Contact: Matthew Gerlach <matthew.gerlach@altera.com>
+Description: Read only. Returns a list of indices for canceled code
+ signing keys for the partial reconfiguration region. The
+ standard bitmap list format is used (e.g. "1,2-6,9").
+
+What: /sys/bus/platform/drivers/intel-m10bmc-sec-update/.../security/bmc_canceled_csks
+Date: Sep 2022
+KernelVersion: 5.20
+Contact: Matthew Gerlach <matthew.gerlach@altera.com>
+Description: Read only. Returns a list of indices for canceled code
+ signing keys for the BMC. The standard bitmap list format
+ is used (e.g. "1,2-6,9").
+
+What: /sys/bus/platform/drivers/intel-m10bmc-sec-update/.../security/flash_count
+Date: Sep 2022
+KernelVersion: 5.20
+Contact: Matthew Gerlach <matthew.gerlach@altera.com>
+Description: Read only. Returns number of times the secure update
+ staging area has been flashed.
+ Format: "%u".
diff --git a/Documentation/ABI/testing/sysfs-driver-intel-xe-hwmon b/Documentation/ABI/testing/sysfs-driver-intel-xe-hwmon
new file mode 100644
index 000000000000..d9e2b17c6872
--- /dev/null
+++ b/Documentation/ABI/testing/sysfs-driver-intel-xe-hwmon
@@ -0,0 +1,198 @@
+What: /sys/bus/pci/drivers/xe/.../hwmon/hwmon<i>/power1_max
+Date: September 2023
+KernelVersion: 6.5
+Contact: intel-xe@lists.freedesktop.org
+Description: RW. Card reactive sustained (PL1) power limit in microwatts.
+
+ The power controller will throttle the operating frequency
+ if the power averaged over a window (typically seconds)
+ exceeds this limit. A read value of 0 means that the PL1
+ power limit is disabled, writing 0 disables the
+ limit. Writing values > 0 and <= TDP will enable the power limit.
+
+ Only supported for particular Intel Xe graphics platforms.
+
+What: /sys/bus/pci/drivers/xe/.../hwmon/hwmon<i>/power1_rated_max
+Date: September 2023
+KernelVersion: 6.5
+Contact: intel-xe@lists.freedesktop.org
+Description: RO. Card default power limit (default TDP setting).
+
+ Only supported for particular Intel Xe graphics platforms.
+
+
+What: /sys/bus/pci/drivers/xe/.../hwmon/hwmon<i>/energy1_input
+Date: September 2023
+KernelVersion: 6.5
+Contact: intel-xe@lists.freedesktop.org
+Description: RO. Card energy input of device in microjoules.
+
+ Only supported for particular Intel Xe graphics platforms.
+
+What: /sys/bus/pci/drivers/xe/.../hwmon/hwmon<i>/power1_max_interval
+Date: October 2023
+KernelVersion: 6.6
+Contact: intel-xe@lists.freedesktop.org
+Description: RW. Card sustained power limit interval (Tau in PL1/Tau) in
+ milliseconds over which sustained power is averaged.
+
+ Only supported for particular Intel Xe graphics platforms.
+
+What: /sys/bus/pci/drivers/xe/.../hwmon/hwmon<i>/power2_max
+Date: February 2024
+KernelVersion: 6.8
+Contact: intel-xe@lists.freedesktop.org
+Description: RW. Package reactive sustained (PL1) power limit in microwatts.
+
+ The power controller will throttle the operating frequency
+ if the power averaged over a window (typically seconds)
+ exceeds this limit. A read value of 0 means that the PL1
+ power limit is disabled, writing 0 disables the
+ limit. Writing values > 0 and <= TDP will enable the power limit.
+
+ Only supported for particular Intel Xe graphics platforms.
+
+What: /sys/bus/pci/drivers/xe/.../hwmon/hwmon<i>/power2_rated_max
+Date: February 2024
+KernelVersion: 6.8
+Contact: intel-xe@lists.freedesktop.org
+Description: RO. Package default power limit (default TDP setting).
+
+ Only supported for particular Intel Xe graphics platforms.
+
+What: /sys/bus/pci/drivers/xe/.../hwmon/hwmon<i>/power1_crit
+Date: May 2025
+KernelVersion: 6.15
+Contact: intel-xe@lists.freedesktop.org
+Description: RW. Card reactive critical (I1) power limit in microwatts.
+
+ Card reactive critical (I1) power limit in microwatts is exposed
+ for client products. The power controller will throttle the
+ operating frequency if the power averaged over a window exceeds
+ this limit.
+
+ Only supported for particular Intel Xe graphics platforms.
+
+What: /sys/bus/pci/drivers/xe/.../hwmon/hwmon<i>/curr1_crit
+Date: May 2025
+KernelVersion: 6.15
+Contact: intel-xe@lists.freedesktop.org
+Description: RW. Card reactive critical (I1) power limit in milliamperes.
+
+ Card reactive critical (I1) power limit in milliamperes is
+ exposed for server products. The power controller will throttle
+ the operating frequency if the power averaged over a window
+ exceeds this limit.
+
+What: /sys/bus/pci/drivers/xe/.../hwmon/hwmon<i>/energy2_input
+Date: February 2024
+KernelVersion: 6.8
+Contact: intel-xe@lists.freedesktop.org
+Description: RO. Package energy input of device in microjoules.
+
+ Only supported for particular Intel Xe graphics platforms.
+
+What: /sys/bus/pci/drivers/xe/.../hwmon/hwmon<i>/power2_max_interval
+Date: February 2024
+KernelVersion: 6.8
+Contact: intel-xe@lists.freedesktop.org
+Description: RW. Package sustained power limit interval (Tau in PL1/Tau) in
+ milliseconds over which sustained power is averaged.
+
+ Only supported for particular Intel Xe graphics platforms.
+
+What: /sys/bus/pci/drivers/xe/.../hwmon/hwmon<i>/in1_input
+Date: February 2024
+KernelVersion: 6.8
+Contact: intel-xe@lists.freedesktop.org
+Description: RO. Package current voltage in millivolt.
+
+ Only supported for particular Intel Xe graphics platforms.
+
+What: /sys/bus/pci/drivers/xe/.../hwmon/hwmon<i>/temp2_input
+Date: March 2025
+KernelVersion: 6.15
+Contact: intel-xe@lists.freedesktop.org
+Description: RO. Package temperature in millidegree Celsius.
+
+ Only supported for particular Intel Xe graphics platforms.
+
+What: /sys/bus/pci/drivers/xe/.../hwmon/hwmon<i>/temp3_input
+Date: March 2025
+KernelVersion: 6.15
+Contact: intel-xe@lists.freedesktop.org
+Description: RO. VRAM temperature in millidegree Celsius.
+
+ Only supported for particular Intel Xe graphics platforms.
+
+What: /sys/bus/pci/drivers/xe/.../hwmon/hwmon<i>/fan1_input
+Date: March 2025
+KernelVersion: 6.16
+Contact: intel-xe@lists.freedesktop.org
+Description: RO. Fan 1 speed in RPM.
+
+ Only supported for particular Intel Xe graphics platforms.
+
+What: /sys/bus/pci/drivers/xe/.../hwmon/hwmon<i>/fan2_input
+Date: March 2025
+KernelVersion: 6.16
+Contact: intel-xe@lists.freedesktop.org
+Description: RO. Fan 2 speed in RPM.
+
+ Only supported for particular Intel Xe graphics platforms.
+
+What: /sys/bus/pci/drivers/xe/.../hwmon/hwmon<i>/fan3_input
+Date: March 2025
+KernelVersion: 6.16
+Contact: intel-xe@lists.freedesktop.org
+Description: RO. Fan 3 speed in RPM.
+
+ Only supported for particular Intel Xe graphics platforms.
+
+What: /sys/bus/pci/drivers/xe/.../hwmon/hwmon<i>/power1_cap
+Date: May 2025
+KernelVersion: 6.15
+Contact: intel-xe@lists.freedesktop.org
+Description: RW. Card burst (PL2) power limit in microwatts.
+
+ The power controller will throttle the operating frequency
+ if the power averaged over a window (typically milli seconds)
+ exceeds this limit. A read value of 0 means that the PL2
+ power limit is disabled, writing 0 disables the limit.
+ PL2 is greater than PL1 and its time window is lesser
+ compared to PL1.
+
+ Only supported for particular Intel Xe graphics platforms.
+
+What: /sys/bus/pci/drivers/xe/.../hwmon/hwmon<i>/power2_cap
+Date: May 2025
+KernelVersion: 6.15
+Contact: intel-xe@lists.freedesktop.org
+Description: RW. Package burst (PL2) power limit in microwatts.
+
+ The power controller will throttle the operating frequency
+ if the power averaged over a window (typically milli seconds)
+ exceeds this limit. A read value of 0 means that the PL2
+ power limit is disabled, writing 0 disables the limit.
+ PL2 is greater than PL1 and its time window is lesser
+ compared to PL1.
+
+ Only supported for particular Intel Xe graphics platforms.
+
+What: /sys/bus/pci/drivers/xe/.../hwmon/hwmon<i>/power1_cap_interval
+Date: May 2025
+KernelVersion: 6.15
+Contact: intel-xe@lists.freedesktop.org
+Description: RW. Card burst power limit interval (Tau in PL2/Tau) in
+ milliseconds over which sustained power is averaged.
+
+ Only supported for particular Intel Xe graphics platforms.
+
+What: /sys/bus/pci/drivers/xe/.../hwmon/hwmon<i>/power2_cap_interval
+Date: May 2025
+KernelVersion: 6.15
+Contact: intel-xe@lists.freedesktop.org
+Description: RW. Package burst power limit interval (Tau in PL2/Tau) in
+ milliseconds over which sustained power is averaged.
+
+ Only supported for particular Intel Xe graphics platforms.
diff --git a/Documentation/ABI/testing/sysfs-driver-intel-xe-sriov b/Documentation/ABI/testing/sysfs-driver-intel-xe-sriov
new file mode 100644
index 000000000000..2fd7e9b7bacc
--- /dev/null
+++ b/Documentation/ABI/testing/sysfs-driver-intel-xe-sriov
@@ -0,0 +1,159 @@
+What: /sys/bus/pci/drivers/xe/.../sriov_admin/
+Date: October 2025
+KernelVersion: 6.19
+Contact: intel-xe@lists.freedesktop.org
+Description:
+ This directory appears for the particular Intel Xe device when:
+
+ - device supports SR-IOV, and
+ - device is a Physical Function (PF), and
+ - driver support for the SR-IOV PF is enabled on given device.
+
+ This directory is used as a root for all attributes required to
+ manage both Physical Function (PF) and Virtual Functions (VFs).
+
+
+What: /sys/bus/pci/drivers/xe/.../sriov_admin/pf/
+Date: October 2025
+KernelVersion: 6.19
+Contact: intel-xe@lists.freedesktop.org
+Description:
+ This directory holds attributes related to the SR-IOV Physical
+ Function (PF).
+
+
+What: /sys/bus/pci/drivers/xe/.../sriov_admin/vf1/
+What: /sys/bus/pci/drivers/xe/.../sriov_admin/vf2/
+What: /sys/bus/pci/drivers/xe/.../sriov_admin/vf<N>/
+Date: October 2025
+KernelVersion: 6.19
+Contact: intel-xe@lists.freedesktop.org
+Description:
+ These directories hold attributes related to the SR-IOV Virtual
+ Functions (VFs).
+
+ Note that the VF number <N> is 1-based as described in PCI SR-IOV
+ specification as the Xe driver follows that naming schema.
+
+ There could be "vf1", "vf2" and so on, up to "vf<N>", where <N>
+ matches the value of the "sriov_totalvfs" attribute.
+
+
+What: /sys/bus/pci/drivers/xe/.../sriov_admin/pf/profile/exec_quantum_ms
+What: /sys/bus/pci/drivers/xe/.../sriov_admin/pf/profile/preempt_timeout_us
+What: /sys/bus/pci/drivers/xe/.../sriov_admin/pf/profile/sched_priority
+What: /sys/bus/pci/drivers/xe/.../sriov_admin/vf<n>/profile/exec_quantum_ms
+What: /sys/bus/pci/drivers/xe/.../sriov_admin/vf<n>/profile/preempt_timeout_us
+What: /sys/bus/pci/drivers/xe/.../sriov_admin/vf<n>/profile/sched_priority
+Date: October 2025
+KernelVersion: 6.19
+Contact: intel-xe@lists.freedesktop.org
+Description:
+ These files expose scheduling parameters for the PF and its VFs, and
+ are visible only on Intel Xe platforms that use time-sliced GPU sharing.
+ They can be changed even if VFs are enabled and running and reflect the
+ settings of all tiles/GTs assigned to the given function.
+
+ exec_quantum_ms: (RW) unsigned integer
+ The GT execution quantum (EQ) in [ms] for the given function.
+ Actual quantum value might be aligned per HW/FW requirements.
+
+ Default is 0 (unlimited).
+
+ preempt_timeout_us: (RW) unsigned integer
+ The GT preemption timeout in [us] of the given function.
+ Actual timeout value might be aligned per HW/FW requirements.
+
+ Default is 0 (unlimited).
+
+ sched_priority: (RW/RO) string
+ The GT scheduling priority of the given function.
+
+ "low" - function will be scheduled on the GPU for its EQ/PT
+ only if function has any work already submitted.
+
+ "normal" - functions will be scheduled on the GPU for its EQ/PT
+ irrespective of whether it has submitted a work or not.
+
+ "high" - function will be scheduled on the GPU for its EQ/PT
+ in the next time-slice after the current one completes
+ and function has a work submitted.
+
+ Default is "low".
+
+ When read, this file will display the current and available
+ scheduling priorities. The currently active priority level will
+ be enclosed in square brackets, like:
+
+ [low] normal high
+
+ This file can be read-only if changing the priority is not
+ supported.
+
+ Writes to these attributes may fail with errors like:
+ -EINVAL if provided input is malformed or not recognized,
+ -EPERM if change is not applicable on given HW/FW,
+ -EIO if FW refuses to change the provisioning.
+
+ Reads from these attributes may fail with:
+ -EUCLEAN if value is not consistent across all tiles/GTs.
+
+
+What: /sys/bus/pci/drivers/xe/.../sriov_admin/.bulk_profile/exec_quantum_ms
+What: /sys/bus/pci/drivers/xe/.../sriov_admin/.bulk_profile/preempt_timeout_us
+What: /sys/bus/pci/drivers/xe/.../sriov_admin/.bulk_profile/sched_priority
+Date: October 2025
+KernelVersion: 6.19
+Contact: intel-xe@lists.freedesktop.org
+Description:
+ These files allows bulk reconfiguration of the scheduling parameters
+ of the PF or VFs and are available only for Intel Xe platforms with
+ GPU sharing based on the time-slice basis. These scheduling parameters
+ can be changed even if VFs are enabled and running.
+
+ exec_quantum_ms: (WO) unsigned integer
+ The GT execution quantum (EQ) in [ms] to be applied to all functions.
+ See sriov_admin/{pf,vf<N>}/profile/exec_quantum_ms for more details.
+
+ preempt_timeout_us: (WO) unsigned integer
+ The GT preemption timeout (PT) in [us] to be applied to all functions.
+ See sriov_admin/{pf,vf<N>}/profile/preempt_timeout_us for more details.
+
+ sched_priority: (RW/RO) string
+ The GT scheduling priority to be applied for all functions.
+ See sriov_admin/{pf,vf<N>}/profile/sched_priority for more details.
+
+ Writes to these attributes may fail with errors like:
+ -EINVAL if provided input is malformed or not recognized,
+ -EPERM if change is not applicable on given HW/FW,
+ -EIO if FW refuses to change the provisioning.
+
+
+What: /sys/bus/pci/drivers/xe/.../sriov_admin/vf<n>/stop
+Date: October 2025
+KernelVersion: 6.19
+Contact: intel-xe@lists.freedesktop.org
+Description:
+ This file allows to control scheduling of the VF on the Intel Xe GPU
+ platforms. It allows to implement custom policy mechanism in case VFs
+ are misbehaving or triggering adverse events above defined thresholds.
+
+ stop: (WO) bool
+ All GT executions of given function shall be immediately stopped.
+ To allow scheduling this VF again, the VF FLR must be triggered.
+
+ Writes to this attribute may fail with errors like:
+ -EINVAL if provided input is malformed or not recognized,
+ -EPERM if change is not applicable on given HW/FW,
+ -EIO if FW refuses to change the scheduling.
+
+
+What: /sys/bus/pci/drivers/xe/.../sriov_admin/pf/device
+What: /sys/bus/pci/drivers/xe/.../sriov_admin/vf<n>/device
+Date: October 2025
+KernelVersion: 6.19
+Contact: intel-xe@lists.freedesktop.org
+Description:
+ These are symlinks to the underlying PCI device entry representing
+ given Xe SR-IOV function. For the PF, this link is always present.
+ For VFs, this link is present only for currently enabled VFs.
diff --git a/Documentation/ABI/testing/sysfs-driver-intel_sdsi b/Documentation/ABI/testing/sysfs-driver-intel_sdsi
new file mode 100644
index 000000000000..f8afed127107
--- /dev/null
+++ b/Documentation/ABI/testing/sysfs-driver-intel_sdsi
@@ -0,0 +1,90 @@
+What: /sys/bus/auxiliary/devices/intel_vsec.sdsi.X
+Date: Feb 2022
+KernelVersion: 5.18
+Contact: "David E. Box" <david.e.box@linux.intel.com>
+Description:
+ This directory contains interface files for accessing Intel
+ On Demand (formerly Software Defined Silicon or SDSi) features
+ on a CPU. X represents the socket instance (though not the
+ socket ID). The socket ID is determined by reading the
+ registers file and decoding it per the specification.
+
+ Some files communicate with On Demand hardware through a
+ mailbox. Should the operation fail, one of the following error
+ codes may be returned:
+
+ ========== =====
+ Error Code Cause
+ ========== =====
+ EIO General mailbox failure. Log may indicate cause.
+ EBUSY Mailbox is owned by another agent.
+ EPERM On Demand capability is not enabled in hardware.
+ EPROTO Failure in mailbox protocol detected by driver.
+ See log for details.
+ EOVERFLOW For provision commands, the size of the data
+ exceeds what may be written.
+ ESPIPE Seeking is not allowed.
+ ETIMEDOUT Failure to complete mailbox transaction in time.
+ ========== =====
+
+What: /sys/bus/auxiliary/devices/intel_vsec.sdsi.X/guid
+Date: Feb 2022
+KernelVersion: 5.18
+Contact: "David E. Box" <david.e.box@linux.intel.com>
+Description:
+ (RO) The GUID for the registers file. The GUID identifies
+ the layout of the registers file in this directory.
+ Information about the register layouts for a particular GUID
+ is available at http://github.com/intel/intel-sdsi
+
+What: /sys/bus/auxiliary/devices/intel_vsec.sdsi.X/registers
+Date: Feb 2022
+KernelVersion: 5.18
+Contact: "David E. Box" <david.e.box@linux.intel.com>
+Description:
+ (RO) Contains information needed by applications to provision
+ a CPU and monitor status information. The layout of this file
+ is determined by the GUID in this directory. Information about
+ the layout for a particular GUID is available at
+ http://github.com/intel/intel-sdsi
+
+What: /sys/bus/auxiliary/devices/intel_vsec.sdsi.X/provision_akc
+Date: Feb 2022
+KernelVersion: 5.18
+Contact: "David E. Box" <david.e.box@linux.intel.com>
+Description:
+ (WO) Used to write an Authentication Key Certificate (AKC) to
+ the On Demand NVRAM for the CPU. The AKC is used to authenticate
+ a Capability Activation Payload. Mailbox command.
+
+What: /sys/bus/auxiliary/devices/intel_vsec.sdsi.X/provision_cap
+Date: Feb 2022
+KernelVersion: 5.18
+Contact: "David E. Box" <david.e.box@linux.intel.com>
+Description:
+ (WO) Used to write a Capability Activation Payload (CAP) to the
+ On Demand NVRAM for the CPU. CAPs are used to activate a given
+ CPU feature. A CAP is validated by On Demand hardware using a
+ previously provisioned AKC file. Upon successful authentication,
+ the CPU configuration is updated. A cold reboot is required to
+ fully activate the feature. Mailbox command.
+
+What: /sys/bus/auxiliary/devices/intel_vsec.sdsi.X/meter_certificate
+Date: Nov 2022
+KernelVersion: 6.2
+Contact: "David E. Box" <david.e.box@linux.intel.com>
+Description:
+ (RO) Used to read back the current meter certificate for the CPU
+ from Intel On Demand hardware. The meter certificate contains
+ utilization metrics of On Demand enabled features. Mailbox
+ command.
+
+What: /sys/bus/auxiliary/devices/intel_vsec.sdsi.X/state_certificate
+Date: Feb 2022
+KernelVersion: 5.18
+Contact: "David E. Box" <david.e.box@linux.intel.com>
+Description:
+ (RO) Used to read back the current state certificate for the CPU
+ from On Demand hardware. The state certificate contains
+ information about the current licenses on the CPU. Mailbox
+ command.
diff --git a/Documentation/ABI/testing/sysfs-driver-panfrost-profiling b/Documentation/ABI/testing/sysfs-driver-panfrost-profiling
new file mode 100644
index 000000000000..7597c420e54b
--- /dev/null
+++ b/Documentation/ABI/testing/sysfs-driver-panfrost-profiling
@@ -0,0 +1,10 @@
+What: /sys/bus/platform/drivers/panfrost/.../profiling
+Date: February 2024
+KernelVersion: 6.8.0
+Contact: Adrian Larumbe <adrian.larumbe@collabora.com>
+Description:
+ Get/set drm fdinfo's engine and cycles profiling status.
+ Valid values are:
+ 0: Don't enable fdinfo job profiling sources.
+ 1: Enable fdinfo job profiling sources, this enables both the GPU's
+ timestamp and cycle counter registers.
diff --git a/Documentation/ABI/testing/sysfs-driver-panthor-profiling b/Documentation/ABI/testing/sysfs-driver-panthor-profiling
new file mode 100644
index 000000000000..af05fccedc15
--- /dev/null
+++ b/Documentation/ABI/testing/sysfs-driver-panthor-profiling
@@ -0,0 +1,10 @@
+What: /sys/bus/platform/drivers/panthor/.../profiling
+Date: September 2024
+KernelVersion: 6.11.0
+Contact: Adrian Larumbe <adrian.larumbe@collabora.com>
+Description:
+ Bitmask to enable drm fdinfo's job profiling measurements.
+ Valid values are:
+ 0: Don't enable fdinfo job profiling sources.
+ 1: Enable GPU cycle measurements for running jobs.
+ 2: Enable GPU timestamp sampling for running jobs.
diff --git a/Documentation/ABI/testing/sysfs-driver-qaic b/Documentation/ABI/testing/sysfs-driver-qaic
new file mode 100644
index 000000000000..f794fd734163
--- /dev/null
+++ b/Documentation/ABI/testing/sysfs-driver-qaic
@@ -0,0 +1,18 @@
+What: /sys/bus/pci/drivers/qaic/XXXX:XX:XX.X/ce_count
+Date: May 2025
+KernelVersion: 6.17
+Contact: dri-devel@lists.freedesktop.org
+Description: Number of correctable errors received from device since driver is loaded.
+
+What: /sys/bus/pci/drivers/qaic/XXXX:XX:XX.X/ue_count
+Date: May 2025
+KernelVersion: 6.17
+Contact: dri-devel@lists.freedesktop.org
+Description: Number of uncorrectable errors received from device since driver is loaded.
+
+What: /sys/bus/pci/drivers/qaic/XXXX:XX:XX.X/ue_nonfatal_count
+Date: May 2025
+KernelVersion: 6.17
+Contact: dri-devel@lists.freedesktop.org
+Description: Number of uncorrectable non-fatal errors received from device since driver
+ is loaded.
diff --git a/Documentation/ABI/testing/sysfs-driver-qat b/Documentation/ABI/testing/sysfs-driver-qat
new file mode 100644
index 000000000000..b0561b9fc4eb
--- /dev/null
+++ b/Documentation/ABI/testing/sysfs-driver-qat
@@ -0,0 +1,167 @@
+What: /sys/bus/pci/devices/<BDF>/qat/state
+Date: June 2022
+KernelVersion: 6.0
+Contact: qat-linux@intel.com
+Description: (RW) Reports the current state of the QAT device. Write to
+ the file to start or stop the device.
+
+ The values are:
+
+ * up: the device is up and running
+ * down: the device is down
+
+
+ It is possible to transition the device from up to down only
+ if the device is up and vice versa.
+
+ This attribute is available for qat_4xxx and qat_6xxx devices.
+
+What: /sys/bus/pci/devices/<BDF>/qat/cfg_services
+Date: June 2022
+KernelVersion: 6.0
+Contact: qat-linux@intel.com
+Description: (RW) Reports the current configuration of the QAT device.
+ Write to the file to change the configured services.
+
+ One or more services can be enabled per device.
+ Certain configurations are restricted to specific device types;
+ where applicable this is explicitly indicated, for example
+ (qat_6xxx) denotes applicability exclusively to that device series.
+
+ The available services include:
+
+ * sym: Configures the device for symmetric cryptographic operations.
+ * asym: Configures the device for asymmetric cryptographic operations.
+ * dc: Configures the device for compression and decompression
+ operations.
+ * dcc: Similar to dc, but with the additional dc chaining feature
+ enabled, cipher then compress (qat_6xxx), hash then compression.
+ If this is not required choose dc.
+ * decomp: Configures the device for decompression operations (qat_6xxx).
+
+ Service combinations are permitted for all services except dcc.
+ On QAT GEN4 devices (qat_4xxx driver) a maximum of two services can be
+ combined and on QAT GEN6 devices (qat_6xxx driver ) a maximum of three
+ services can be combined.
+ The order of services is not significant. For instance, sym;asym is
+ functionally equivalent to asym;sym.
+
+ It is possible to set the configuration only if the device
+ is in the `down` state (see /sys/bus/pci/devices/<BDF>/qat/state)
+
+ The following example shows how to change the configuration of
+ a device configured for running crypto services in order to
+ run data compression::
+
+ # cat /sys/bus/pci/devices/<BDF>/qat/state
+ up
+ # cat /sys/bus/pci/devices/<BDF>/qat/cfg_services
+ sym;asym
+ # echo down > /sys/bus/pci/devices/<BDF>/qat/state
+ # echo dc > /sys/bus/pci/devices/<BDF>/qat/cfg_services
+ # echo up > /sys/bus/pci/devices/<BDF>/qat/state
+ # cat /sys/bus/pci/devices/<BDF>/qat/cfg_services
+ dc
+
+ This attribute is available for qat_4xxx and qat_6xxx devices.
+
+What: /sys/bus/pci/devices/<BDF>/qat/pm_idle_enabled
+Date: June 2023
+KernelVersion: 6.5
+Contact: qat-linux@intel.com
+Description: (RW) This configuration option provides a way to force the device into remaining in
+ the MAX power state.
+ If idle support is enabled the device will transition to the `MIN` power state when
+ idle, otherwise will stay in the MAX power state.
+ Write to the file to enable or disable idle support.
+
+ The values are:
+
+ * 0: idle support is disabled
+ * 1: idle support is enabled
+
+ Default value is 1.
+
+ It is possible to set the pm_idle_enabled value only if the device
+ is in the `down` state (see /sys/bus/pci/devices/<BDF>/qat/state)
+
+ The following example shows how to change the pm_idle_enabled of
+ a device::
+
+ # cat /sys/bus/pci/devices/<BDF>/qat/state
+ up
+ # cat /sys/bus/pci/devices/<BDF>/qat/pm_idle_enabled
+ 1
+ # echo down > /sys/bus/pci/devices/<BDF>/qat/state
+ # echo 0 > /sys/bus/pci/devices/<BDF>/qat/pm_idle_enabled
+ # echo up > /sys/bus/pci/devices/<BDF>/qat/state
+ # cat /sys/bus/pci/devices/<BDF>/qat/pm_idle_enabled
+ 0
+
+ This attribute is available for qat_4xxx and qat_6xxx devices.
+
+What: /sys/bus/pci/devices/<BDF>/qat/rp2srv
+Date: January 2024
+KernelVersion: 6.7
+Contact: qat-linux@intel.com
+Description:
+ (RW) This attribute provides a way for a user to query a
+ specific ring pair for the type of service that it is currently
+ configured for.
+
+ When written to, the value is cached and used to perform the
+ read operation. Allowed values are in the range 0 to N-1, where
+ N is the max number of ring pairs supported by a device. This
+ can be queried using the attribute qat/num_rps.
+
+ A read returns the service associated to the ring pair queried.
+
+ The values are:
+
+ * dc: the ring pair is configured for running compression services
+ * sym: the ring pair is configured for running symmetric crypto
+ services
+ * asym: the ring pair is configured for running asymmetric crypto
+ services
+
+ Example usage::
+
+ # echo 1 > /sys/bus/pci/devices/<BDF>/qat/rp2srv
+ # cat /sys/bus/pci/devices/<BDF>/qat/rp2srv
+ sym
+
+ This attribute is available for qat_4xxx and qat_6xxx devices.
+
+What: /sys/bus/pci/devices/<BDF>/qat/num_rps
+Date: January 2024
+KernelVersion: 6.7
+Contact: qat-linux@intel.com
+Description:
+ (RO) Returns the number of ring pairs that a single device has.
+
+ Example usage::
+
+ # cat /sys/bus/pci/devices/<BDF>/qat/num_rps
+ 64
+
+ This attribute is available for qat_4xxx and qat_6xxx devices.
+
+What: /sys/bus/pci/devices/<BDF>/qat/auto_reset
+Date: May 2024
+KernelVersion: 6.9
+Contact: qat-linux@intel.com
+Description: (RW) Reports the current state of the autoreset feature
+ for a QAT device
+
+ Write to the attribute to enable or disable device auto reset.
+
+ Device auto reset is disabled by default.
+
+ The values are:
+
+ * 1/Yy/on: auto reset enabled. If the device encounters an
+ unrecoverable error, it will be reset automatically.
+ * 0/Nn/off: auto reset disabled. If the device encounters an
+ unrecoverable error, it will not be reset.
+
+ This attribute is available for qat_4xxx and qat_6xxx devices.
diff --git a/Documentation/ABI/testing/sysfs-driver-qat_ras b/Documentation/ABI/testing/sysfs-driver-qat_ras
new file mode 100644
index 000000000000..82ceb04445ec
--- /dev/null
+++ b/Documentation/ABI/testing/sysfs-driver-qat_ras
@@ -0,0 +1,41 @@
+What: /sys/bus/pci/devices/<BDF>/qat_ras/errors_correctable
+Date: January 2024
+KernelVersion: 6.7
+Contact: qat-linux@intel.com
+Description: (RO) Reports the number of correctable errors detected by the device.
+
+ This attribute is only available for qat_4xxx and qat_6xxx devices.
+
+What: /sys/bus/pci/devices/<BDF>/qat_ras/errors_nonfatal
+Date: January 2024
+KernelVersion: 6.7
+Contact: qat-linux@intel.com
+Description: (RO) Reports the number of non fatal errors detected by the device.
+
+ This attribute is only available for qat_4xxx and qat_6xxx devices.
+
+What: /sys/bus/pci/devices/<BDF>/qat_ras/errors_fatal
+Date: January 2024
+KernelVersion: 6.7
+Contact: qat-linux@intel.com
+Description: (RO) Reports the number of fatal errors detected by the device.
+
+ This attribute is only available for qat_4xxx and qat_6xxx devices.
+
+What: /sys/bus/pci/devices/<BDF>/qat_ras/reset_error_counters
+Date: January 2024
+KernelVersion: 6.7
+Contact: qat-linux@intel.com
+Description: (WO) Write to resets all error counters of a device.
+
+ The following example reports how to reset the counters::
+
+ # echo 1 > /sys/bus/pci/devices/<BDF>/qat_ras/reset_error_counters
+ # cat /sys/bus/pci/devices/<BDF>/qat_ras/errors_correctable
+ 0
+ # cat /sys/bus/pci/devices/<BDF>/qat_ras/errors_nonfatal
+ 0
+ # cat /sys/bus/pci/devices/<BDF>/qat_ras/errors_fatal
+ 0
+
+ This attribute is only available for qat_4xxx and qat_6xxx devices.
diff --git a/Documentation/ABI/testing/sysfs-driver-qat_rl b/Documentation/ABI/testing/sysfs-driver-qat_rl
new file mode 100644
index 000000000000..d534f89b4971
--- /dev/null
+++ b/Documentation/ABI/testing/sysfs-driver-qat_rl
@@ -0,0 +1,226 @@
+What: /sys/bus/pci/devices/<BDF>/qat_rl/sla_op
+Date: January 2024
+KernelVersion: 6.7
+Contact: qat-linux@intel.com
+Description:
+ (WO) This attribute is used to perform an operation on an SLA.
+ The supported operations are: add, update, rm, rm_all, and get.
+
+ Input values must be filled through the associated attribute in
+ this group before a write to this file.
+ If the operation completes successfully, the associated
+ attributes will be updated.
+ The associated attributes are: cir, pir, srv, rp, and id.
+
+ Supported operations:
+
+ * add: Creates a new SLA with the provided inputs from user.
+ * Inputs: cir, pir, srv, and rp
+ * Output: id
+
+ * get: Returns the configuration of the specified SLA in id attribute
+ * Inputs: id
+ * Outputs: cir, pir, srv, and rp
+
+ * update: Updates the SLA with new values set in the following attributes
+ * Inputs: id, cir, and pir
+
+ * rm: Removes the specified SLA in the id attribute.
+ * Inputs: id
+
+ * rm_all: Removes all the configured SLAs.
+ * Inputs: None
+
+ This attribute is only available for qat_4xxx and qat_6xxx devices.
+
+What: /sys/bus/pci/devices/<BDF>/qat_rl/rp
+Date: January 2024
+KernelVersion: 6.7
+Contact: qat-linux@intel.com
+Description:
+ (RW) When read, reports the current assigned ring pairs for the
+ queried SLA.
+ When wrote to, configures the ring pairs associated to a new SLA.
+
+ The value is a 64-bit bit mask and is written/displayed in hex.
+ Each bit of this mask represents a single ring pair i.e.,
+ bit 1 == ring pair id 0; bit 3 == ring pair id 2.
+
+ Selected ring pairs must to be assigned to a single service,
+ i.e. the one provided with the srv attribute. The service
+ assigned to a certain ring pair can be checked by querying
+ the attribute qat/rp2srv.
+
+ The maximum number of ring pairs is 4 per SLA.
+
+ Applicability in sla_op:
+
+ * WRITE: add operation
+ * READ: get operation
+
+ Example usage::
+
+ ## Read
+ # echo 4 > /sys/bus/pci/devices/<BDF>/qat_rl/id
+ # cat /sys/bus/pci/devices/<BDF>/qat_rl/rp
+ 0x5
+
+ ## Write
+ # echo 0x5 > /sys/bus/pci/devices/<BDF>/qat_rl/rp
+
+ This attribute is only available for qat_4xxx and qat_6xxx devices.
+
+What: /sys/bus/pci/devices/<BDF>/qat_rl/id
+Date: January 2024
+KernelVersion: 6.7
+Contact: qat-linux@intel.com
+Description:
+ (RW) If written to, the value is used to retrieve a particular
+ SLA and operate on it.
+ This is valid only for the following operations: update, rm,
+ and get.
+ A read of this attribute is only guaranteed to have correct data
+ after creation of an SLA.
+
+ Applicability in sla_op:
+
+ * WRITE: rm and update operations
+ * READ: add and get operations
+
+ Example usage::
+
+ ## Read
+ ## Set attributes e.g. cir, pir, srv, etc
+ # echo "add" > /sys/bus/pci/devices/<BDF>/qat_rl/sla_op
+ # cat /sys/bus/pci/devices/<BDF>/qat_rl/id
+ 4
+
+ ## Write
+ # echo 7 > /sys/bus/pci/devices/<BDF>/qat_rl/id
+ # echo "get" > /sys/bus/pci/devices/<BDF>/qat_rl/sla_op
+ # cat /sys/bus/pci/devices/<BDF>/qat_rl/rp
+ 0x5 ## ring pair ID 0 and ring pair ID 2
+
+ This attribute is only available for qat_4xxx and qat_6xxx devices.
+
+What: /sys/bus/pci/devices/<BDF>/qat_rl/cir
+Date: January 2024
+KernelVersion: 6.7
+Contact: qat-linux@intel.com
+Description:
+ (RW) Committed information rate (CIR). Rate guaranteed to be
+ achieved by a particular SLA. The value is expressed in
+ permille scale, i.e. 1000 refers to the maximum device
+ throughput for a selected service.
+
+ After sending a "get" to sla_op, this will be populated with the
+ CIR for that queried SLA.
+ Write to this file before sending an "add/update" sla_op, to set
+ the SLA to the specified value.
+
+ Applicability in sla_op:
+
+ * WRITE: add and update operations
+ * READ: get operation
+
+ Example usage::
+
+ ## Write
+ # echo 500 > /sys/bus/pci/devices/<BDF>/qat_rl/cir
+ # echo "add" /sys/bus/pci/devices/<BDF>/qat_rl/sla_op
+
+ ## Read
+ # echo 4 > /sys/bus/pci/devices/<BDF>/qat_rl/id
+ # echo "get" > /sys/bus/pci/devices/<BDF>/qat_rl/sla_op
+ # cat /sys/bus/pci/devices/<BDF>/qat_rl/cir
+ 500
+
+ This attribute is only available for qat_4xxx and qat_6xxx devices.
+
+What: /sys/bus/pci/devices/<BDF>/qat_rl/pir
+Date: January 2024
+KernelVersion: 6.7
+Contact: qat-linux@intel.com
+Description:
+ (RW) Peak information rate (PIR). The maximum rate that can be
+ achieved by that particular SLA. An SLA can reach a value
+ between CIR and PIR when the device is not fully utilized by
+ requests from other users (assigned to different SLAs).
+
+ After sending a "get" to sla_op, this will be populated with the
+ PIR for that queried SLA.
+ Write to this file before sending an "add/update" sla_op, to set
+ the SLA to the specified value.
+
+ Applicability in sla_op:
+
+ * WRITE: add and update operations
+ * READ: get operation
+
+ Example usage::
+
+ ## Write
+ # echo 750 > /sys/bus/pci/devices/<BDF>/qat_rl/pir
+ # echo "add" > /sys/bus/pci/devices/<BDF>/qat_rl/sla_op
+
+ ## Read
+ # echo 4 > /sys/bus/pci/devices/<BDF>/qat_rl/id
+ # echo "get" > /sys/bus/pci/devices/<BDF>/qat_rl/sla_op
+ # cat /sys/bus/pci/devices/<BDF>/qat_rl/pir
+ 750
+
+ This attribute is only available for qat_4xxx and qat_6xxx devices.
+
+What: /sys/bus/pci/devices/<BDF>/qat_rl/srv
+Date: January 2024
+KernelVersion: 6.7
+Contact: qat-linux@intel.com
+Description:
+ (RW) Service (SRV). Represents the service (sym, asym, dc)
+ associated to an SLA.
+ Can be written to or queried to set/show the SRV type for an SLA.
+ The SRV attribute is used to specify the SRV type before adding
+ an SLA. After an SLA is configured, reports the service
+ associated to that SLA.
+
+ Applicability in sla_op:
+
+ * WRITE: add and update operations
+ * READ: get operation
+
+ Example usage::
+
+ ## Write
+ # echo "dc" > /sys/bus/pci/devices/<BDF>/qat_rl/srv
+ # echo "add" > /sys/bus/pci/devices/<BDF>/qat_rl/sla_op
+ # cat /sys/bus/pci/devices/<BDF>/qat_rl/id
+ 4
+
+ ## Read
+ # echo 4 > /sys/bus/pci/devices/<BDF>/qat_rl/id
+ # echo "get" > /sys/bus/pci/devices/<BDF>/qat_rl/sla_op
+ # cat /sys/bus/pci/devices/<BDF>/qat_rl/srv
+ dc
+
+ This attribute is only available for qat_4xxx and qat_6xxx devices.
+
+What: /sys/bus/pci/devices/<BDF>/qat_rl/cap_rem
+Date: January 2024
+KernelVersion: 6.7
+Contact: qat-linux@intel.com
+Description:
+ (RW) This file will return the remaining capability for a
+ particular service/sla. This is the remaining value that a new
+ SLA can be set to or a current SLA can be increased with.
+
+ Example usage::
+
+ # echo "asym" > /sys/bus/pci/devices/<BDF>/qat_rl/cap_rem
+ # cat /sys/bus/pci/devices/<BDF>/qat_rl/cap_rem
+ 250
+ # echo 250 > /sys/bus/pci/devices/<BDF>/qat_rl/cir
+ # echo "add" > /sys/bus/pci/devices/<BDF>/qat_rl/sla_op
+ # cat /sys/bus/pci/devices/<BDF>/qat_rl/cap_rem
+ 0
+
+ This attribute is only available for qat_4xxx and qat_6xxx devices.
diff --git a/Documentation/ABI/testing/sysfs-driver-samsung-laptop b/Documentation/ABI/testing/sysfs-driver-samsung-laptop
index 28c9c040de5d..408cb0ddf4aa 100644
--- a/Documentation/ABI/testing/sysfs-driver-samsung-laptop
+++ b/Documentation/ABI/testing/sysfs-driver-samsung-laptop
@@ -20,17 +20,6 @@ Description: Some Samsung laptops have different "performance levels"
and it's still unknown if this value even changes
anything, other than making the user feel a bit better.
-What: /sys/devices/platform/samsung/battery_life_extender
-Date: December 1, 2011
-KernelVersion: 3.3
-Contact: Corentin Chary <corentin.chary@gmail.com>
-Description: Max battery charge level can be modified, battery cycle
- life can be extended by reducing the max battery charge
- level.
-
- - 0 means normal battery mode (100% charge)
- - 1 means battery life extender mode (80% charge)
-
What: /sys/devices/platform/samsung/usb_charge
Date: December 1, 2011
KernelVersion: 3.3
diff --git a/Documentation/ABI/testing/sysfs-driver-spi-intel b/Documentation/ABI/testing/sysfs-driver-spi-intel
new file mode 100644
index 000000000000..d7c9139ddbf3
--- /dev/null
+++ b/Documentation/ABI/testing/sysfs-driver-spi-intel
@@ -0,0 +1,20 @@
+What: /sys/devices/.../intel_spi_protected
+Date: Feb 2025
+KernelVersion: 6.13
+Contact: Alexander Usyskin <alexander.usyskin@intel.com>
+Description: This attribute allows the userspace to check if the
+ Intel SPI flash controller is write protected from the host.
+
+What: /sys/devices/.../intel_spi_locked
+Date: Feb 2025
+KernelVersion: 6.13
+Contact: Alexander Usyskin <alexander.usyskin@intel.com>
+Description: This attribute allows the user space to check if the
+ Intel SPI flash controller locks supported opcodes.
+
+What: /sys/devices/.../intel_spi_bios_locked
+Date: Feb 2025
+KernelVersion: 6.13
+Contact: Alexander Usyskin <alexander.usyskin@intel.com>
+Description: This attribute allows the user space to check if the
+ Intel SPI flash controller BIOS region is locked for writes.
diff --git a/Documentation/ABI/testing/sysfs-driver-tegra-fuse b/Documentation/ABI/testing/sysfs-driver-tegra-fuse
index 69f5af632657..b8936fad2ccf 100644
--- a/Documentation/ABI/testing/sysfs-driver-tegra-fuse
+++ b/Documentation/ABI/testing/sysfs-driver-tegra-fuse
@@ -3,7 +3,7 @@ Date: February 2014
Contact: Peter De Schrijver <pdeschrijver@nvidia.com>
Description: read-only access to the efuses on Tegra20, Tegra30, Tegra114
and Tegra124 SoC's from NVIDIA. The efuses contain write once
- data programmed at the factory. The data is layed out in 32bit
+ data programmed at the factory. The data is laid out in 32bit
words in LSB first format. Each bit represents a single value
as decoded from the fuse registers. Bits order/assignment
exactly matches the HW registers, including any unused bits.
diff --git a/Documentation/ABI/testing/sysfs-driver-typec-displayport b/Documentation/ABI/testing/sysfs-driver-typec-displayport
index 231471ad0d4b..314acd54e13e 100644
--- a/Documentation/ABI/testing/sysfs-driver-typec-displayport
+++ b/Documentation/ABI/testing/sysfs-driver-typec-displayport
@@ -47,3 +47,28 @@ Description:
USB SuperSpeed protocol. From user perspective pin assignments C
and E are equal, where all channels on the connector are used
for carrying DisplayPort protocol (allowing higher resolutions).
+
+What: /sys/bus/typec/devices/.../displayport/hpd
+Date: Dec 2022
+Contact: Badhri Jagan Sridharan <badhri@google.com>
+Description:
+ VESA DisplayPort Alt Mode on USB Type-C Standard defines how
+ HotPlugDetect(HPD) shall be supported on the USB-C connector when
+ operating in DisplayPort Alt Mode. This is a read only node which
+ reflects the current state of HPD.
+
+ Valid values:
+ - 1: when HPD’s logical state is high (HPD_High) as defined
+ by VESA DisplayPort Alt Mode on USB Type-C Standard.
+ - 0 when HPD’s logical state is low (HPD_Low) as defined by
+ VESA DisplayPort Alt Mode on USB Type-C Standard.
+
+What: /sys/bus/typec/devices/.../displayport/irq_hpd
+Date: June 2025
+Contact: RD Babiera <rdbabiera@google.com>
+Description:
+ IRQ_HPD events are sent over the USB PD protocol in Status Update and
+ Attention messages. IRQ_HPD can only be asserted when HPD is high,
+ and is asserted when an IRQ_HPD has been issued since the last Status
+ Update. This is a read only node that returns the number of IRQ events
+ raised in the driver's lifetime.
diff --git a/Documentation/ABI/testing/sysfs-driver-uacce b/Documentation/ABI/testing/sysfs-driver-uacce
index 08f2591138af..d3f0b8f3c589 100644
--- a/Documentation/ABI/testing/sysfs-driver-uacce
+++ b/Documentation/ABI/testing/sysfs-driver-uacce
@@ -19,6 +19,24 @@ Contact: linux-accelerators@lists.ozlabs.org
Description: Available instances left of the device
Return -ENODEV if uacce_ops get_available_instances is not provided
+What: /sys/class/uacce/<dev_name>/isolate_strategy
+Date: Nov 2022
+KernelVersion: 6.1
+Contact: linux-accelerators@lists.ozlabs.org
+Description: (RW) A sysfs node that configure the error threshold for the hardware
+ isolation strategy. This size is a configured integer value, which is the
+ number of threshold for hardware errors occurred in one hour. The default is 0.
+ 0 means never isolate the device. The maximum value is 65535. You can write
+ a number of threshold based on your hardware.
+
+What: /sys/class/uacce/<dev_name>/isolate
+Date: Nov 2022
+KernelVersion: 6.1
+Contact: linux-accelerators@lists.ozlabs.org
+Description: (R) A sysfs node that read the device isolated state. The value 1
+ means the device is unavailable. The 0 means the device is
+ available.
+
What: /sys/class/uacce/<dev_name>/algorithms
Date: Feb 2020
KernelVersion: 5.7
diff --git a/Documentation/ABI/testing/sysfs-driver-ufs b/Documentation/ABI/testing/sysfs-driver-ufs
index a44ef8bfbadf..a90612ab5780 100644
--- a/Documentation/ABI/testing/sysfs-driver-ufs
+++ b/Documentation/ABI/testing/sysfs-driver-ufs
@@ -711,7 +711,7 @@ Description: This file shows the thin provisioning type. This is one of
The file is read only.
-What: /sys/class/scsi_device/*/device/unit_descriptor/physical_memory_resourse_count
+What: /sys/class/scsi_device/*/device/unit_descriptor/physical_memory_resource_count
Date: February 2018
Contact: Stanislav Nijnikov <stanislav.nijnikov@wdc.com>
Description: This file shows the total physical memory resources. This is
@@ -920,14 +920,16 @@ Description: This file shows whether the configuration descriptor is locked.
What: /sys/bus/platform/drivers/ufshcd/*/attributes/max_number_of_rtt
What: /sys/bus/platform/devices/*.ufs/attributes/max_number_of_rtt
-Date: February 2018
-Contact: Stanislav Nijnikov <stanislav.nijnikov@wdc.com>
+Date: May 2024
+Contact: Avri Altman <avri.altman@wdc.com>
Description: This file provides the maximum current number of
- outstanding RTTs in device that is allowed. The full
- information about the attribute could be found at
- UFS specifications 2.1.
+ outstanding RTTs in device that is allowed. bMaxNumOfRTT is a
+ read-write persistent attribute and is equal to two after device
+ manufacturing. It shall not be set to a value greater than
+ bDeviceRTTCap value, and it may be set only when the hw queues are
+ empty.
- The file is read only.
+ The file is read write.
What: /sys/bus/platform/drivers/ufshcd/*/attributes/exception_event_control
What: /sys/bus/platform/devices/*.ufs/attributes/exception_event_control
@@ -994,7 +996,7 @@ Description: This file shows the amount of physical memory needed
What: /sys/bus/platform/drivers/ufshcd/*/rpm_lvl
What: /sys/bus/platform/devices/*.ufs/rpm_lvl
Date: September 2014
-Contact: Subhash Jadavani <subhashj@codeaurora.org>
+Contact: Can Guo <quic_cang@quicinc.com>
Description: This entry could be used to set or show the UFS device
runtime power management level. The current driver
implementation supports 7 levels with next target states:
@@ -1021,7 +1023,7 @@ Description: This entry could be used to set or show the UFS device
What: /sys/bus/platform/drivers/ufshcd/*/rpm_target_dev_state
What: /sys/bus/platform/devices/*.ufs/rpm_target_dev_state
Date: February 2018
-Contact: Subhash Jadavani <subhashj@codeaurora.org>
+Contact: Can Guo <quic_cang@quicinc.com>
Description: This entry shows the target power mode of an UFS device
for the chosen runtime power management level.
@@ -1030,7 +1032,7 @@ Description: This entry shows the target power mode of an UFS device
What: /sys/bus/platform/drivers/ufshcd/*/rpm_target_link_state
What: /sys/bus/platform/devices/*.ufs/rpm_target_link_state
Date: February 2018
-Contact: Subhash Jadavani <subhashj@codeaurora.org>
+Contact: Can Guo <quic_cang@quicinc.com>
Description: This entry shows the target state of an UFS UIC link
for the chosen runtime power management level.
@@ -1039,7 +1041,7 @@ Description: This entry shows the target state of an UFS UIC link
What: /sys/bus/platform/drivers/ufshcd/*/spm_lvl
What: /sys/bus/platform/devices/*.ufs/spm_lvl
Date: September 2014
-Contact: Subhash Jadavani <subhashj@codeaurora.org>
+Contact: Can Guo <quic_cang@quicinc.com>
Description: This entry could be used to set or show the UFS device
system power management level. The current driver
implementation supports 7 levels with next target states:
@@ -1066,7 +1068,7 @@ Description: This entry could be used to set or show the UFS device
What: /sys/bus/platform/drivers/ufshcd/*/spm_target_dev_state
What: /sys/bus/platform/devices/*.ufs/spm_target_dev_state
Date: February 2018
-Contact: Subhash Jadavani <subhashj@codeaurora.org>
+Contact: Can Guo <quic_cang@quicinc.com>
Description: This entry shows the target power mode of an UFS device
for the chosen system power management level.
@@ -1075,7 +1077,7 @@ Description: This entry shows the target power mode of an UFS device
What: /sys/bus/platform/drivers/ufshcd/*/spm_target_link_state
What: /sys/bus/platform/devices/*.ufs/spm_target_link_state
Date: February 2018
-Contact: Subhash Jadavani <subhashj@codeaurora.org>
+Contact: Can Guo <quic_cang@quicinc.com>
Description: This entry shows the target state of an UFS UIC link
for the chosen system power management level.
@@ -1084,7 +1086,7 @@ Description: This entry shows the target state of an UFS UIC link
What: /sys/bus/platform/drivers/ufshcd/*/monitor/monitor_enable
What: /sys/bus/platform/devices/*.ufs/monitor/monitor_enable
Date: January 2021
-Contact: Can Guo <cang@codeaurora.org>
+Contact: Can Guo <quic_cang@quicinc.com>
Description: This file shows the status of performance monitor enablement
and it can be used to start/stop the monitor. When the monitor
is stopped, the performance data collected is also cleared.
@@ -1092,7 +1094,7 @@ Description: This file shows the status of performance monitor enablement
What: /sys/bus/platform/drivers/ufshcd/*/monitor/monitor_chunk_size
What: /sys/bus/platform/devices/*.ufs/monitor/monitor_chunk_size
Date: January 2021
-Contact: Can Guo <cang@codeaurora.org>
+Contact: Can Guo <quic_cang@quicinc.com>
Description: This file tells the monitor to focus on requests transferring
data of specific chunk size (in Bytes). 0 means any chunk size.
It can only be changed when monitor is disabled.
@@ -1100,7 +1102,7 @@ Description: This file tells the monitor to focus on requests transferring
What: /sys/bus/platform/drivers/ufshcd/*/monitor/read_total_sectors
What: /sys/bus/platform/devices/*.ufs/monitor/read_total_sectors
Date: January 2021
-Contact: Can Guo <cang@codeaurora.org>
+Contact: Can Guo <quic_cang@quicinc.com>
Description: This file shows how many sectors (in 512 Bytes) have been
sent from device to host after monitor gets started.
@@ -1109,7 +1111,7 @@ Description: This file shows how many sectors (in 512 Bytes) have been
What: /sys/bus/platform/drivers/ufshcd/*/monitor/read_total_busy
What: /sys/bus/platform/devices/*.ufs/monitor/read_total_busy
Date: January 2021
-Contact: Can Guo <cang@codeaurora.org>
+Contact: Can Guo <quic_cang@quicinc.com>
Description: This file shows how long (in micro seconds) has been spent
sending data from device to host after monitor gets started.
@@ -1118,7 +1120,7 @@ Description: This file shows how long (in micro seconds) has been spent
What: /sys/bus/platform/drivers/ufshcd/*/monitor/read_nr_requests
What: /sys/bus/platform/devices/*.ufs/monitor/read_nr_requests
Date: January 2021
-Contact: Can Guo <cang@codeaurora.org>
+Contact: Can Guo <quic_cang@quicinc.com>
Description: This file shows how many read requests have been sent after
monitor gets started.
@@ -1127,7 +1129,7 @@ Description: This file shows how many read requests have been sent after
What: /sys/bus/platform/drivers/ufshcd/*/monitor/read_req_latency_max
What: /sys/bus/platform/devices/*.ufs/monitor/read_req_latency_max
Date: January 2021
-Contact: Can Guo <cang@codeaurora.org>
+Contact: Can Guo <quic_cang@quicinc.com>
Description: This file shows the maximum latency (in micro seconds) of
read requests after monitor gets started.
@@ -1136,7 +1138,7 @@ Description: This file shows the maximum latency (in micro seconds) of
What: /sys/bus/platform/drivers/ufshcd/*/monitor/read_req_latency_min
What: /sys/bus/platform/devices/*.ufs/monitor/read_req_latency_min
Date: January 2021
-Contact: Can Guo <cang@codeaurora.org>
+Contact: Can Guo <quic_cang@quicinc.com>
Description: This file shows the minimum latency (in micro seconds) of
read requests after monitor gets started.
@@ -1145,7 +1147,7 @@ Description: This file shows the minimum latency (in micro seconds) of
What: /sys/bus/platform/drivers/ufshcd/*/monitor/read_req_latency_avg
What: /sys/bus/platform/devices/*.ufs/monitor/read_req_latency_avg
Date: January 2021
-Contact: Can Guo <cang@codeaurora.org>
+Contact: Can Guo <quic_cang@quicinc.com>
Description: This file shows the average latency (in micro seconds) of
read requests after monitor gets started.
@@ -1154,7 +1156,7 @@ Description: This file shows the average latency (in micro seconds) of
What: /sys/bus/platform/drivers/ufshcd/*/monitor/read_req_latency_sum
What: /sys/bus/platform/devices/*.ufs/monitor/read_req_latency_sum
Date: January 2021
-Contact: Can Guo <cang@codeaurora.org>
+Contact: Can Guo <quic_cang@quicinc.com>
Description: This file shows the total latency (in micro seconds) of
read requests sent after monitor gets started.
@@ -1163,7 +1165,7 @@ Description: This file shows the total latency (in micro seconds) of
What: /sys/bus/platform/drivers/ufshcd/*/monitor/write_total_sectors
What: /sys/bus/platform/devices/*.ufs/monitor/write_total_sectors
Date: January 2021
-Contact: Can Guo <cang@codeaurora.org>
+Contact: Can Guo <quic_cang@quicinc.com>
Description: This file shows how many sectors (in 512 Bytes) have been sent
from host to device after monitor gets started.
@@ -1172,7 +1174,7 @@ Description: This file shows how many sectors (in 512 Bytes) have been sent
What: /sys/bus/platform/drivers/ufshcd/*/monitor/write_total_busy
What: /sys/bus/platform/devices/*.ufs/monitor/write_total_busy
Date: January 2021
-Contact: Can Guo <cang@codeaurora.org>
+Contact: Can Guo <quic_cang@quicinc.com>
Description: This file shows how long (in micro seconds) has been spent
sending data from host to device after monitor gets started.
@@ -1181,7 +1183,7 @@ Description: This file shows how long (in micro seconds) has been spent
What: /sys/bus/platform/drivers/ufshcd/*/monitor/write_nr_requests
What: /sys/bus/platform/devices/*.ufs/monitor/write_nr_requests
Date: January 2021
-Contact: Can Guo <cang@codeaurora.org>
+Contact: Can Guo <quic_cang@quicinc.com>
Description: This file shows how many write requests have been sent after
monitor gets started.
@@ -1190,7 +1192,7 @@ Description: This file shows how many write requests have been sent after
What: /sys/bus/platform/drivers/ufshcd/*/monitor/write_req_latency_max
What: /sys/bus/platform/devices/*.ufs/monitor/write_req_latency_max
Date: January 2021
-Contact: Can Guo <cang@codeaurora.org>
+Contact: Can Guo <quic_cang@quicinc.com>
Description: This file shows the maximum latency (in micro seconds) of write
requests after monitor gets started.
@@ -1199,7 +1201,7 @@ Description: This file shows the maximum latency (in micro seconds) of write
What: /sys/bus/platform/drivers/ufshcd/*/monitor/write_req_latency_min
What: /sys/bus/platform/devices/*.ufs/monitor/write_req_latency_min
Date: January 2021
-Contact: Can Guo <cang@codeaurora.org>
+Contact: Can Guo <quic_cang@quicinc.com>
Description: This file shows the minimum latency (in micro seconds) of write
requests after monitor gets started.
@@ -1208,7 +1210,7 @@ Description: This file shows the minimum latency (in micro seconds) of write
What: /sys/bus/platform/drivers/ufshcd/*/monitor/write_req_latency_avg
What: /sys/bus/platform/devices/*.ufs/monitor/write_req_latency_avg
Date: January 2021
-Contact: Can Guo <cang@codeaurora.org>
+Contact: Can Guo <quic_cang@quicinc.com>
Description: This file shows the average latency (in micro seconds) of write
requests after monitor gets started.
@@ -1217,16 +1219,65 @@ Description: This file shows the average latency (in micro seconds) of write
What: /sys/bus/platform/drivers/ufshcd/*/monitor/write_req_latency_sum
What: /sys/bus/platform/devices/*.ufs/monitor/write_req_latency_sum
Date: January 2021
-Contact: Can Guo <cang@codeaurora.org>
+Contact: Can Guo <quic_cang@quicinc.com>
Description: This file shows the total latency (in micro seconds) of write
requests after monitor gets started.
The file is read only.
+What: /sys/bus/platform/drivers/ufshcd/*/power_info/lane
+What: /sys/bus/platform/devices/*.ufs/power_info/lane
+Date: September 2023
+Contact: Can Guo <quic_cang@quicinc.com>
+Description: This file shows how many lanes are enabled on the UFS link,
+ i.e., an output 2 means UFS link is operating with 2 lanes.
+
+ The file is read only.
+
+What: /sys/bus/platform/drivers/ufshcd/*/power_info/mode
+What: /sys/bus/platform/devices/*.ufs/power_info/mode
+Date: September 2023
+Contact: Can Guo <quic_cang@quicinc.com>
+Description: This file shows the PA power mode of UFS.
+
+ The file is read only.
+
+What: /sys/bus/platform/drivers/ufshcd/*/power_info/rate
+What: /sys/bus/platform/devices/*.ufs/power_info/rate
+Date: September 2023
+Contact: Can Guo <quic_cang@quicinc.com>
+Description: This file shows the speed rate of UFS link.
+
+ The file is read only.
+
+What: /sys/bus/platform/drivers/ufshcd/*/power_info/gear
+What: /sys/bus/platform/devices/*.ufs/power_info/gear
+Date: September 2023
+Contact: Can Guo <quic_cang@quicinc.com>
+Description: This file shows the gear of UFS link.
+
+ The file is read only.
+
+What: /sys/bus/platform/drivers/ufshcd/*/power_info/dev_pm
+What: /sys/bus/platform/devices/*.ufs/power_info/dev_pm
+Date: September 2023
+Contact: Can Guo <quic_cang@quicinc.com>
+Description: This file shows the UFS device power mode.
+
+ The file is read only.
+
+What: /sys/bus/platform/drivers/ufshcd/*/power_info/link_state
+What: /sys/bus/platform/devices/*.ufs/power_info/link_state
+Date: September 2023
+Contact: Can Guo <quic_cang@quicinc.com>
+Description: This file shows the state of UFS link.
+
+ The file is read only.
+
What: /sys/bus/platform/drivers/ufshcd/*/device_descriptor/wb_presv_us_en
What: /sys/bus/platform/devices/*.ufs/device_descriptor/wb_presv_us_en
Date: June 2020
-Contact: Asutosh Das <asutoshd@codeaurora.org>
+Contact: Asutosh Das <quic_asutoshd@quicinc.com>
Description: This entry shows if preserve user-space was configured
The file is read only.
@@ -1234,7 +1285,7 @@ Description: This entry shows if preserve user-space was configured
What: /sys/bus/platform/drivers/ufshcd/*/device_descriptor/wb_shared_alloc_units
What: /sys/bus/platform/devices/*.ufs/device_descriptor/wb_shared_alloc_units
Date: June 2020
-Contact: Asutosh Das <asutoshd@codeaurora.org>
+Contact: Asutosh Das <quic_asutoshd@quicinc.com>
Description: This entry shows the shared allocated units of WB buffer
The file is read only.
@@ -1242,7 +1293,7 @@ Description: This entry shows the shared allocated units of WB buffer
What: /sys/bus/platform/drivers/ufshcd/*/device_descriptor/wb_type
What: /sys/bus/platform/devices/*.ufs/device_descriptor/wb_type
Date: June 2020
-Contact: Asutosh Das <asutoshd@codeaurora.org>
+Contact: Asutosh Das <quic_asutoshd@quicinc.com>
Description: This entry shows the configured WB type.
0x1 for shared buffer mode. 0x0 for dedicated buffer mode.
@@ -1251,7 +1302,7 @@ Description: This entry shows the configured WB type.
What: /sys/bus/platform/drivers/ufshcd/*/geometry_descriptor/wb_buff_cap_adj
What: /sys/bus/platform/devices/*.ufs/geometry_descriptor/wb_buff_cap_adj
Date: June 2020
-Contact: Asutosh Das <asutoshd@codeaurora.org>
+Contact: Asutosh Das <quic_asutoshd@quicinc.com>
Description: This entry shows the total user-space decrease in shared
buffer mode.
The value of this parameter is 3 for TLC NAND when SLC mode
@@ -1262,7 +1313,7 @@ Description: This entry shows the total user-space decrease in shared
What: /sys/bus/platform/drivers/ufshcd/*/geometry_descriptor/wb_max_alloc_units
What: /sys/bus/platform/devices/*.ufs/geometry_descriptor/wb_max_alloc_units
Date: June 2020
-Contact: Asutosh Das <asutoshd@codeaurora.org>
+Contact: Asutosh Das <quic_asutoshd@quicinc.com>
Description: This entry shows the Maximum total WriteBooster Buffer size
which is supported by the entire device.
@@ -1271,7 +1322,7 @@ Description: This entry shows the Maximum total WriteBooster Buffer size
What: /sys/bus/platform/drivers/ufshcd/*/geometry_descriptor/wb_max_wb_luns
What: /sys/bus/platform/devices/*.ufs/geometry_descriptor/wb_max_wb_luns
Date: June 2020
-Contact: Asutosh Das <asutoshd@codeaurora.org>
+Contact: Asutosh Das <quic_asutoshd@quicinc.com>
Description: This entry shows the maximum number of luns that can support
WriteBooster.
@@ -1280,7 +1331,7 @@ Description: This entry shows the maximum number of luns that can support
What: /sys/bus/platform/drivers/ufshcd/*/geometry_descriptor/wb_sup_red_type
What: /sys/bus/platform/devices/*.ufs/geometry_descriptor/wb_sup_red_type
Date: June 2020
-Contact: Asutosh Das <asutoshd@codeaurora.org>
+Contact: Asutosh Das <quic_asutoshd@quicinc.com>
Description: The supportability of user space reduction mode
and preserve user space mode.
00h: WriteBooster Buffer can be configured only in
@@ -1295,7 +1346,7 @@ Description: The supportability of user space reduction mode
What: /sys/bus/platform/drivers/ufshcd/*/geometry_descriptor/wb_sup_wb_type
What: /sys/bus/platform/devices/*.ufs/geometry_descriptor/wb_sup_wb_type
Date: June 2020
-Contact: Asutosh Das <asutoshd@codeaurora.org>
+Contact: Asutosh Das <quic_asutoshd@quicinc.com>
Description: The supportability of WriteBooster Buffer type.
=== ==========================================================
@@ -1310,7 +1361,7 @@ Description: The supportability of WriteBooster Buffer type.
What: /sys/bus/platform/drivers/ufshcd/*/flags/wb_enable
What: /sys/bus/platform/devices/*.ufs/flags/wb_enable
Date: June 2020
-Contact: Asutosh Das <asutoshd@codeaurora.org>
+Contact: Asutosh Das <quic_asutoshd@quicinc.com>
Description: This entry shows the status of WriteBooster.
== ============================
@@ -1323,7 +1374,7 @@ Description: This entry shows the status of WriteBooster.
What: /sys/bus/platform/drivers/ufshcd/*/flags/wb_flush_en
What: /sys/bus/platform/devices/*.ufs/flags/wb_flush_en
Date: June 2020
-Contact: Asutosh Das <asutoshd@codeaurora.org>
+Contact: Asutosh Das <quic_asutoshd@quicinc.com>
Description: This entry shows if flush is enabled.
== =================================
@@ -1336,7 +1387,7 @@ Description: This entry shows if flush is enabled.
What: /sys/bus/platform/drivers/ufshcd/*/flags/wb_flush_during_h8
What: /sys/bus/platform/devices/*.ufs/flags/wb_flush_during_h8
Date: June 2020
-Contact: Asutosh Das <asutoshd@codeaurora.org>
+Contact: Asutosh Das <quic_asutoshd@quicinc.com>
Description: Flush WriteBooster Buffer during hibernate state.
== =================================================
@@ -1351,7 +1402,7 @@ Description: Flush WriteBooster Buffer during hibernate state.
What: /sys/bus/platform/drivers/ufshcd/*/attributes/wb_avail_buf
What: /sys/bus/platform/devices/*.ufs/attributes/wb_avail_buf
Date: June 2020
-Contact: Asutosh Das <asutoshd@codeaurora.org>
+Contact: Asutosh Das <quic_asutoshd@quicinc.com>
Description: This entry shows the amount of unused WriteBooster buffer
available.
@@ -1360,7 +1411,7 @@ Description: This entry shows the amount of unused WriteBooster buffer
What: /sys/bus/platform/drivers/ufshcd/*/attributes/wb_cur_buf
What: /sys/bus/platform/devices/*.ufs/attributes/wb_cur_buf
Date: June 2020
-Contact: Asutosh Das <asutoshd@codeaurora.org>
+Contact: Asutosh Das <quic_asutoshd@quicinc.com>
Description: This entry shows the amount of unused current buffer.
The file is read only.
@@ -1368,7 +1419,7 @@ Description: This entry shows the amount of unused current buffer.
What: /sys/bus/platform/drivers/ufshcd/*/attributes/wb_flush_status
What: /sys/bus/platform/devices/*.ufs/attributes/wb_flush_status
Date: June 2020
-Contact: Asutosh Das <asutoshd@codeaurora.org>
+Contact: Asutosh Das <quic_asutoshd@quicinc.com>
Description: This entry shows the flush operation status.
@@ -1385,7 +1436,7 @@ Description: This entry shows the flush operation status.
What: /sys/bus/platform/drivers/ufshcd/*/attributes/wb_life_time_est
What: /sys/bus/platform/devices/*.ufs/attributes/wb_life_time_est
Date: June 2020
-Contact: Asutosh Das <asutoshd@codeaurora.org>
+Contact: Asutosh Das <quic_asutoshd@quicinc.com>
Description: This entry shows an indication of the WriteBooster Buffer
lifetime based on the amount of performed program/erase cycles
@@ -1399,7 +1450,7 @@ Description: This entry shows an indication of the WriteBooster Buffer
What: /sys/class/scsi_device/*/device/unit_descriptor/wb_buf_alloc_units
Date: June 2020
-Contact: Asutosh Das <asutoshd@codeaurora.org>
+Contact: Asutosh Das <quic_asutoshd@quicinc.com>
Description: This entry shows the configured size of WriteBooster buffer.
0400h corresponds to 4GB.
@@ -1417,246 +1468,303 @@ Description: This node is used to set or display whether UFS WriteBooster is
platform that doesn't support UFSHCD_CAP_CLK_SCALING, we can
disable/enable WriteBooster through this sysfs node.
-What: /sys/bus/platform/drivers/ufshcd/*/device_descriptor/hpb_version
-What: /sys/bus/platform/devices/*.ufs/device_descriptor/hpb_version
-Date: June 2021
-Contact: Daejun Park <daejun7.park@samsung.com>
-Description: This entry shows the HPB specification version.
- The full information about the descriptor can be found in the UFS
- HPB (Host Performance Booster) Extension specifications.
- Example: version 1.2.3 = 0123h
-
- The file is read only.
+What: /sys/bus/platform/drivers/ufshcd/*/enable_wb_buf_flush
+What: /sys/bus/platform/devices/*.ufs/enable_wb_buf_flush
+Date: July 2022
+Contact: Jinyoung Choi <j-young.choi@samsung.com>
+Description: This entry shows the status of WriteBooster buffer flushing
+ and it can be used to enable or disable the flushing.
+ If flushing is enabled, the device executes the flush
+ operation when the command queue is empty.
+
+What: /sys/bus/platform/drivers/ufshcd/*/wb_flush_threshold
+What: /sys/bus/platform/devices/*.ufs/wb_flush_threshold
+Date: June 2023
+Contact: Lu Hongfei <luhongfei@vivo.com>
+Description:
+ wb_flush_threshold represents the threshold for flushing WriteBooster buffer,
+ whose value expressed in unit of 10% granularity, such as '1' representing 10%,
+ '2' representing 20%, and so on.
+ If avail_wb_buff < wb_flush_threshold, it indicates that WriteBooster buffer needs to
+ be flushed, otherwise it is not necessary.
+
+Contact: Daniil Lunev <dlunev@chromium.org>
+What: /sys/bus/platform/drivers/ufshcd/*/capabilities/
+What: /sys/bus/platform/devices/*.ufs/capabilities/
+Date: August 2022
+Description: The group represents the effective capabilities of the
+ host-device pair. i.e. the capabilities which are enabled in the
+ driver for the specific host controller, supported by the host
+ controller and are supported and/or have compatible
+ configuration on the device side.
+
+Contact: Daniil Lunev <dlunev@chromium.org>
+What: /sys/bus/platform/drivers/ufshcd/*/capabilities/clock_scaling
+What: /sys/bus/platform/devices/*.ufs/capabilities/clock_scaling
+Date: August 2022
+Contact: Daniil Lunev <dlunev@chromium.org>
+Description: Indicates status of clock scaling.
-What: /sys/bus/platform/drivers/ufshcd/*/device_descriptor/hpb_control
-What: /sys/bus/platform/devices/*.ufs/device_descriptor/hpb_control
-Date: June 2021
-Contact: Daejun Park <daejun7.park@samsung.com>
-Description: This entry shows an indication of the HPB control mode.
- 00h: Host control mode
- 01h: Device control mode
+ == ============================
+ 0 Clock scaling is not supported.
+ 1 Clock scaling is supported.
+ == ============================
The file is read only.
-What: /sys/bus/platform/drivers/ufshcd/*/geometry_descriptor/hpb_region_size
-What: /sys/bus/platform/devices/*.ufs/geometry_descriptor/hpb_region_size
-Date: June 2021
-Contact: Daejun Park <daejun7.park@samsung.com>
-Description: This entry shows the bHPBRegionSize which can be calculated
- as in the following (in bytes):
- HPB Region size = 512B * 2^bHPBRegionSize
-
- The file is read only.
+What: /sys/bus/platform/drivers/ufshcd/*/capabilities/write_booster
+What: /sys/bus/platform/devices/*.ufs/capabilities/write_booster
+Date: August 2022
+Contact: Daniil Lunev <dlunev@chromium.org>
+Description: Indicates status of Write Booster.
-What: /sys/bus/platform/drivers/ufshcd/*/geometry_descriptor/hpb_number_lu
-What: /sys/bus/platform/devices/*.ufs/geometry_descriptor/hpb_number_lu
-Date: June 2021
-Contact: Daejun Park <daejun7.park@samsung.com>
-Description: This entry shows the maximum number of HPB LU supported by
- the device.
- 00h: HPB is not supported by the device.
- 01h ~ 20h: Maximum number of HPB LU supported by the device
+ == ============================
+ 0 Write Booster can not be enabled.
+ 1 Write Booster can be enabled.
+ == ============================
The file is read only.
-What: /sys/bus/platform/drivers/ufshcd/*/geometry_descriptor/hpb_subregion_size
-What: /sys/bus/platform/devices/*.ufs/geometry_descriptor/hpb_subregion_size
-Date: June 2021
-Contact: Daejun Park <daejun7.park@samsung.com>
-Description: This entry shows the bHPBSubRegionSize, which can be
- calculated as in the following (in bytes) and shall be a multiple of
- logical block size:
- HPB Sub-Region size = 512B x 2^bHPBSubRegionSize
- bHPBSubRegionSize shall not exceed bHPBRegionSize.
+What: /sys/bus/platform/drivers/ufshcd/*/rtc_update_ms
+What: /sys/bus/platform/devices/*.ufs/rtc_update_ms
+Date: November 2023
+Contact: Bean Huo <beanhuo@micron.com>
+Description:
+ rtc_update_ms indicates how often the host should synchronize or update the
+ UFS RTC. If set to 0, this will disable UFS RTC periodic update.
+What: /sys/devices/platform/.../ufshci_capabilities/version
+Date: August 2024
+Contact: Avri Altman <avri.altman@wdc.com>
+Description:
+ Host Capabilities register group: UFS version register.
+ Symbol - VER. This file shows the UFSHCD version.
+ Example: Version 3.12 would be represented as 0000_0312h.
The file is read only.
-What: /sys/bus/platform/drivers/ufshcd/*/geometry_descriptor/hpb_max_active_regions
-What: /sys/bus/platform/devices/*.ufs/geometry_descriptor/hpb_max_active_regions
-Date: June 2021
-Contact: Daejun Park <daejun7.park@samsung.com>
-Description: This entry shows the maximum number of active HPB regions that
- is supported by the device.
+What: /sys/devices/platform/.../ufshci_capabilities/product_id
+Date: August 2024
+Contact: Avri Altman <avri.altman@wdc.com>
+Description:
+ Host Capabilities register group: product ID register.
+ Symbol - HCPID. This file shows the UFSHCD product id.
+ The content of this register is vendor specific.
+ The file is read only.
+What: /sys/devices/platform/.../ufshci_capabilities/man_id
+Date: August 2024
+Contact: Avri Altman <avri.altman@wdc.com>
+Description:
+ Host Capabilities register group: manufacturer ID register.
+ Symbol - HCMID. This file shows the UFSHCD manufacturer id.
+ The Manufacturer ID is defined by JEDEC in JEDEC-JEP106.
The file is read only.
-What: /sys/class/scsi_device/*/device/unit_descriptor/hpb_lu_max_active_regions
-Date: June 2021
-Contact: Daejun Park <daejun7.park@samsung.com>
-Description: This entry shows the maximum number of HPB regions assigned to
- the HPB logical unit.
+What: /sys/bus/platform/drivers/ufshcd/*/critical_health
+What: /sys/bus/platform/devices/*.ufs/critical_health
+Date: February 2025
+Contact: Avri Altman <avri.altman@wdc.com>
+Description: Report the number of times a critical health event has been
+ reported by a UFS device. Further insight into the specific
+ issue can be gained by reading one of: bPreEOLInfo,
+ bDeviceLifeTimeEstA, bDeviceLifeTimeEstB,
+ bWriteBoosterBufferLifeTimeEst, and bRPMBLifeTimeEst.
The file is read only.
-What: /sys/class/scsi_device/*/device/unit_descriptor/hpb_pinned_region_start_offset
-Date: June 2021
-Contact: Daejun Park <daejun7.park@samsung.com>
-Description: This entry shows the start offset of HPB pinned region.
+What: /sys/bus/platform/drivers/ufshcd/*/clkscale_enable
+What: /sys/bus/platform/devices/*.ufs/clkscale_enable
+Date: January 2025
+Contact: Ziqi Chen <quic_ziqichen@quicinc.com>
+Description:
+ This attribute shows whether the UFS clock scaling is enabled or not.
+ And it can be used to enable/disable the clock scaling by writing
+ 1 or 0 to this attribute.
- The file is read only.
+ The attribute is read/write.
-What: /sys/class/scsi_device/*/device/unit_descriptor/hpb_number_pinned_regions
-Date: June 2021
-Contact: Daejun Park <daejun7.park@samsung.com>
-Description: This entry shows the number of HPB pinned regions assigned to
- the HPB logical unit.
+What: /sys/bus/platform/drivers/ufshcd/*/clkgate_enable
+What: /sys/bus/platform/devices/*.ufs/clkgate_enable
+Date: January 2025
+Contact: Ziqi Chen <quic_ziqichen@quicinc.com>
+Description:
+ This attribute shows whether the UFS clock gating is enabled or not.
+ And it can be used to enable/disable the clock gating by writing
+ 1 or 0 to this attribute.
- The file is read only.
+ The attribute is read/write.
-What: /sys/class/scsi_device/*/device/hpb_stats/hit_cnt
-Date: June 2021
-Contact: Daejun Park <daejun7.park@samsung.com>
-Description: This entry shows the number of reads that changed to HPB read.
+What: /sys/bus/platform/drivers/ufshcd/*/clkgate_delay_ms
+What: /sys/bus/platform/devices/*.ufs/clkgate_delay_ms
+Date: January 2025
+Contact: Ziqi Chen <quic_ziqichen@quicinc.com>
+Description:
+ This attribute shows and sets the number of milliseconds of idle time
+ before the UFS driver starts to perform clock gating. This can
+ prevent the UFS from frequently performing clock gating/ungating.
- The file is read only.
+ The attribute is read/write.
-What: /sys/class/scsi_device/*/device/hpb_stats/miss_cnt
-Date: June 2021
-Contact: Daejun Park <daejun7.park@samsung.com>
-Description: This entry shows the number of reads that cannot be changed to
- HPB read.
+What: /sys/bus/platform/drivers/ufshcd/*/device_lvl_exception_count
+What: /sys/bus/platform/devices/*.ufs/device_lvl_exception_count
+Date: March 2025
+Contact: Bao D. Nguyen <quic_nguyenb@quicinc.com>
+Description:
+ This attribute is applicable to ufs devices compliant to the
+ JEDEC specifications version 4.1 or later. The
+ device_lvl_exception_count is a counter indicating the number of
+ times the device level exceptions have occurred since the last
+ time this variable is reset. Writing a 0 value to this
+ attribute will reset the device_lvl_exception_count. If the
+ device_lvl_exception_count reads a positive value, the user
+ application should read the device_lvl_exception_id attribute to
+ know more information about the exception.
+
+ The attribute is read/write.
+
+What: /sys/bus/platform/drivers/ufshcd/*/device_lvl_exception_id
+What: /sys/bus/platform/devices/*.ufs/device_lvl_exception_id
+Date: March 2025
+Contact: Bao D. Nguyen <quic_nguyenb@quicinc.com>
+Description:
+ Reading the device_lvl_exception_id returns the
+ qDeviceLevelExceptionID attribute of the ufs device JEDEC
+ specification version 4.1. The definition of the
+ qDeviceLevelExceptionID is the ufs device vendor specific
+ implementation. Refer to the device manufacturer datasheet for
+ more information on the meaning of the qDeviceLevelExceptionID
+ attribute value.
+
+ The attribute is read only.
+
+What: /sys/bus/platform/drivers/ufshcd/*/wb_resize_enable
+What: /sys/bus/platform/devices/*.ufs/wb_resize_enable
+Date: April 2025
+Contact: Huan Tang <tanghuan@vivo.com>
+Description:
+ The host can enable the WriteBooster buffer resize by setting this
+ attribute.
- The file is read only.
+ ======== ======================================
+ idle There is no resize operation
+ decrease Decrease WriteBooster buffer size
+ increase Increase WriteBooster buffer size
+ ======== ======================================
-What: /sys/class/scsi_device/*/device/hpb_stats/rb_noti_cnt
-Date: June 2021
-Contact: Daejun Park <daejun7.park@samsung.com>
-Description: This entry shows the number of response UPIUs that has
- recommendations for activating sub-regions and/or inactivating region.
+ The file is write only.
- The file is read only.
+What: /sys/bus/platform/drivers/ufshcd/*/attributes/wb_resize_hint
+What: /sys/bus/platform/devices/*.ufs/attributes/wb_resize_hint
+Date: April 2025
+Contact: Huan Tang <tanghuan@vivo.com>
+Description:
+ wb_resize_hint indicates hint information about which type of resize
+ for WriteBooster buffer is recommended by the device.
-What: /sys/class/scsi_device/*/device/hpb_stats/rb_active_cnt
-Date: June 2021
-Contact: Daejun Park <daejun7.park@samsung.com>
-Description: This entry shows the number of active sub-regions recommended by
- response UPIUs.
+ ========= ======================================
+ keep Recommend keep the buffer size
+ decrease Recommend to decrease the buffer size
+ increase Recommend to increase the buffer size
+ ========= ======================================
The file is read only.
-What: /sys/class/scsi_device/*/device/hpb_stats/rb_inactive_cnt
-Date: June 2021
-Contact: Daejun Park <daejun7.park@samsung.com>
-Description: This entry shows the number of inactive regions recommended by
- response UPIUs.
+What: /sys/bus/platform/drivers/ufshcd/*/attributes/wb_resize_status
+What: /sys/bus/platform/devices/*.ufs/attributes/wb_resize_status
+Date: April 2025
+Contact: Huan Tang <tanghuan@vivo.com>
+Description:
+ The host can check the resize operation status of the WriteBooster
+ buffer by reading this attribute.
+
+ ================ ========================================
+ idle Resize operation is not issued
+ in_progress Resize operation in progress
+ complete_success Resize operation completed successfully
+ general_failure Resize operation general failure
+ ================ ========================================
The file is read only.
-What: /sys/class/scsi_device/*/device/hpb_stats/map_req_cnt
-Date: June 2021
-Contact: Daejun Park <daejun7.park@samsung.com>
-Description: This entry shows the number of read buffer commands for
- activating sub-regions recommended by response UPIUs.
+What: /sys/bus/platform/drivers/ufshcd/*/hid/analysis_trigger
+What: /sys/bus/platform/devices/*.ufs/hid/analysis_trigger
+Date: May 2025
+Contact: Huan Tang <tanghuan@vivo.com>
+Description:
+ The host can enable or disable HID analysis operation.
- The file is read only.
+ ======= =========================================
+ disable disable HID analysis operation
+ enable enable HID analysis operation
+ ======= =========================================
-What: /sys/class/scsi_device/*/device/hpb_params/requeue_timeout_ms
-Date: June 2021
-Contact: Daejun Park <daejun7.park@samsung.com>
-Description: This entry shows the requeue timeout threshold for write buffer
- command in ms. The value can be changed by writing an integer to
- this entry.
+ The file is write only.
-What: /sys/bus/platform/drivers/ufshcd/*/attributes/max_data_size_hpb_single_cmd
-What: /sys/bus/platform/devices/*.ufs/attributes/max_data_size_hpb_single_cmd
-Date: June 2021
-Contact: Daejun Park <daejun7.park@samsung.com>
-Description: This entry shows the maximum HPB data size for using a single HPB
- command.
+What: /sys/bus/platform/drivers/ufshcd/*/hid/defrag_trigger
+What: /sys/bus/platform/devices/*.ufs/hid/defrag_trigger
+Date: May 2025
+Contact: Huan Tang <tanghuan@vivo.com>
+Description:
+ The host can enable or disable HID defragmentation operation.
- === ========
- 00h 4KB
- 01h 8KB
- 02h 12KB
- ...
- FFh 1024KB
- === ========
+ ======= =========================================
+ disable disable HID defragmentation operation
+ enable enable HID defragmentation operation
+ ======= =========================================
- The file is read only.
+ The attribute is write only.
-What: /sys/bus/platform/drivers/ufshcd/*/flags/hpb_enable
-What: /sys/bus/platform/devices/*.ufs/flags/hpb_enable
-Date: June 2021
-Contact: Daejun Park <daejun7.park@samsung.com>
-Description: This entry shows the status of HPB.
+What: /sys/bus/platform/drivers/ufshcd/*/hid/fragmented_size
+What: /sys/bus/platform/devices/*.ufs/hid/fragmented_size
+Date: May 2025
+Contact: Huan Tang <tanghuan@vivo.com>
+Description:
+ The total fragmented size in the device is reported through
+ this attribute.
- == ============================
- 0 HPB is not enabled.
- 1 HPB is enabled
- == ============================
+ The attribute is read only.
- The file is read only.
+What: /sys/bus/platform/drivers/ufshcd/*/hid/defrag_size
+What: /sys/bus/platform/devices/*.ufs/hid/defrag_size
+Date: May 2025
+Contact: Huan Tang <tanghuan@vivo.com>
+Description:
+ The host sets the size to be defragmented by an HID
+ defragmentation operation.
-What: /sys/class/scsi_device/*/device/hpb_param_sysfs/activation_thld
-Date: February 2021
-Contact: Avri Altman <avri.altman@wdc.com>
-Description: In host control mode, reads are the major source of activation
- trials. Once this threshold hs met, the region is added to the
- "to-be-activated" list. Since we reset the read counter upon
- write, this include sending a rb command updating the region
- ppn as well.
-
-What: /sys/class/scsi_device/*/device/hpb_param_sysfs/normalization_factor
-Date: February 2021
-Contact: Avri Altman <avri.altman@wdc.com>
-Description: In host control mode, we think of the regions as "buckets".
- Those buckets are being filled with reads, and emptied on write.
- We use entries_per_srgn - the amount of blocks in a subregion as
- our bucket size. This applies because HPB1.0 only handles
- single-block reads. Once the bucket size is crossed, we trigger
- a normalization work - not only to avoid overflow, but mainly
- because we want to keep those counters normalized, as we are
- using those reads as a comparative score, to make various decisions.
- The normalization is dividing (shift right) the read counter by
- the normalization_factor. If during consecutive normalizations
- an active region has exhausted its reads - inactivate it.
-
-What: /sys/class/scsi_device/*/device/hpb_param_sysfs/eviction_thld_enter
-Date: February 2021
-Contact: Avri Altman <avri.altman@wdc.com>
-Description: Region deactivation is often due to the fact that eviction took
- place: A region becomes active at the expense of another. This is
- happening when the max-active-regions limit has been crossed.
- In host mode, eviction is considered an extreme measure. We
- want to verify that the entering region has enough reads, and
- the exiting region has much fewer reads. eviction_thld_enter is
- the min reads that a region must have in order to be considered
- a candidate for evicting another region.
-
-What: /sys/class/scsi_device/*/device/hpb_param_sysfs/eviction_thld_exit
-Date: February 2021
-Contact: Avri Altman <avri.altman@wdc.com>
-Description: Same as above for the exiting region. A region is considered to
- be a candidate for eviction only if it has fewer reads than
- eviction_thld_exit.
+ The attribute is read/write.
-What: /sys/class/scsi_device/*/device/hpb_param_sysfs/read_timeout_ms
-Date: February 2021
-Contact: Avri Altman <avri.altman@wdc.com>
-Description: In order not to hang on to "cold" regions, we inactivate
- a region that has no READ access for a predefined amount of
- time - read_timeout_ms. If read_timeout_ms has expired, and the
- region is dirty, it is less likely that we can make any use of
- HPB reading it so we inactivate it. Still, deactivation has
- its overhead, and we may still benefit from HPB reading this
- region if it is clean - see read_timeout_expiries.
-
-What: /sys/class/scsi_device/*/device/hpb_param_sysfs/read_timeout_expiries
-Date: February 2021
-Contact: Avri Altman <avri.altman@wdc.com>
-Description: If the region read timeout has expired, but the region is clean,
- just re-wind its timer for another spin. Do that as long as it
- is clean and did not exhaust its read_timeout_expiries threshold.
+What: /sys/bus/platform/drivers/ufshcd/*/hid/progress_ratio
+What: /sys/bus/platform/devices/*.ufs/hid/progress_ratio
+Date: May 2025
+Contact: Huan Tang <tanghuan@vivo.com>
+Description:
+ Defragmentation progress is reported by this attribute,
+ indicates the ratio of the completed defragmentation size
+ over the requested defragmentation size.
-What: /sys/class/scsi_device/*/device/hpb_param_sysfs/timeout_polling_interval_ms
-Date: February 2021
-Contact: Avri Altman <avri.altman@wdc.com>
-Description: The frequency with which the delayed worker that checks the
- read_timeouts is awakened.
+ ==== ============================================
+ 1 1%
+ ...
+ 100 100%
+ ==== ============================================
-What: /sys/class/scsi_device/*/device/hpb_param_sysfs/inflight_map_req
-Date: February 2021
-Contact: Avri Altman <avri.altman@wdc.com>
-Description: In host control mode the host is the originator of map requests.
- To avoid flooding the device with map requests, use a simple throttling
- mechanism that limits the number of inflight map requests.
+ The attribute is read only.
+
+What: /sys/bus/platform/drivers/ufshcd/*/hid/state
+What: /sys/bus/platform/devices/*.ufs/hid/state
+Date: May 2025
+Contact: Huan Tang <tanghuan@vivo.com>
+Description:
+ The HID state is reported by this attribute.
+
+ ==================== ===========================
+ idle Idle (analysis required)
+ analysis_in_progress Analysis in progress
+ defrag_required Defrag required
+ defrag_in_progress Defrag in progress
+ defrag_completed Defrag completed
+ defrag_not_required Defrag is not required
+ ==================== ===========================
+
+ The attribute is read only.
diff --git a/Documentation/ABI/testing/sysfs-driver-uio_pci_sva-pasid b/Documentation/ABI/testing/sysfs-driver-uio_pci_sva-pasid
new file mode 100644
index 000000000000..6892fe46cea8
--- /dev/null
+++ b/Documentation/ABI/testing/sysfs-driver-uio_pci_sva-pasid
@@ -0,0 +1,29 @@
+What: /sys/bus/pci/drivers/uio_pci_sva/<pci_dev>/pasid
+Date: September 2025
+Contact: Yaxing Guo <guoyaxing@bosc.ac.cn>
+Description:
+ Process Address Space ID (PASID) assigned by IOMMU driver to
+ the device for use with Shared Virtual Addressing (SVA).
+
+ This read-only attribute exposes the PASID (A 20-bit identifier
+ used in PCIe Address Translation Services and iommu table walks)
+ allocated by the IOMMU driver during sva device binding.
+
+ User-space UIO applications must read this attribute to obtain
+ the PASID and program it into the device's configuration registers.
+ This enables the device to perform DMA using user-space virtual
+ address, with address translation handled by IOMMU.
+
+ UIO User-space applications must:
+ - Opening device and Mapping the device's register space via /dev/uioX
+ (This triggers the IOMMU driver to allocate the PASID)
+ - Reading the PASID from sysfs
+ - Writing the PASID to a device-specific register (with example offset)
+ The code may be like:
+
+ map = mmap(..., "/dev/uio0", ...);
+
+ f = fopen("/sys/.../pasid", "r");
+ fscanf(f, "%d", &pasid);
+
+ map[REG_PASID_OFFSET] = pasid;
diff --git a/Documentation/ABI/testing/sysfs-driver-uniwill-laptop b/Documentation/ABI/testing/sysfs-driver-uniwill-laptop
new file mode 100644
index 000000000000..eaeb659793d2
--- /dev/null
+++ b/Documentation/ABI/testing/sysfs-driver-uniwill-laptop
@@ -0,0 +1,53 @@
+What: /sys/bus/platform/devices/INOU0000:XX/fn_lock_toggle_enable
+Date: November 2025
+KernelVersion: 6.19
+Contact: Armin Wolf <W_Armin@gmx.de>
+Description:
+ Allows userspace applications to enable/disable the FN lock feature
+ of the integrated keyboard by writing "1"/"0" into this file.
+
+ Reading this file returns the current enable status of the FN lock functionality.
+
+What: /sys/bus/platform/devices/INOU0000:XX/super_key_toggle_enable
+Date: November 2025
+KernelVersion: 6.19
+Contact: Armin Wolf <W_Armin@gmx.de>
+Description:
+ Allows userspace applications to enable/disable the super key functionality
+ of the integrated keyboard by writing "1"/"0" into this file.
+
+ Reading this file returns the current enable status of the super key functionality.
+
+What: /sys/bus/platform/devices/INOU0000:XX/touchpad_toggle_enable
+Date: November 2025
+KernelVersion: 6.19
+Contact: Armin Wolf <W_Armin@gmx.de>
+Description:
+ Allows userspace applications to enable/disable the touchpad toggle functionality
+ of the integrated touchpad by writing "1"/"0" into this file.
+
+ Reading this file returns the current enable status of the touchpad toggle
+ functionality.
+
+What: /sys/bus/platform/devices/INOU0000:XX/rainbow_animation
+Date: November 2025
+KernelVersion: 6.19
+Contact: Armin Wolf <W_Armin@gmx.de>
+Description:
+ Forces the integrated lightbar to display a rainbow animation when the machine
+ is not suspended. Writing "1"/"0" into this file enables/disables this
+ functionality.
+
+ Reading this file returns the current status of the rainbow animation functionality.
+
+What: /sys/bus/platform/devices/INOU0000:XX/breathing_in_suspend
+Date: November 2025
+KernelVersion: 6.19
+Contact: Armin Wolf <W_Armin@gmx.de>
+Description:
+ Causes the integrated lightbar to display a breathing animation when the machine
+ has been suspended and is running on AC power. Writing "1"/"0" into this file
+ enables/disables this functionality.
+
+ Reading this file returns the current status of the breathing animation
+ functionality.
diff --git a/Documentation/ABI/testing/sysfs-driver-xen-blkback b/Documentation/ABI/testing/sysfs-driver-xen-blkback
index a74dfe52dd76..fac0f429a869 100644
--- a/Documentation/ABI/testing/sysfs-driver-xen-blkback
+++ b/Documentation/ABI/testing/sysfs-driver-xen-blkback
@@ -29,7 +29,7 @@ Description:
What: /sys/module/xen_blkback/parameters/buffer_squeeze_duration_ms
Date: December 2019
KernelVersion: 5.6
-Contact: SeongJae Park <sj@kernel.org>
+Contact: Maximilian Heyne <mheyne@amazon.de>
Description:
When memory pressure is reported to blkback this option
controls the duration in milliseconds that blkback will not
@@ -39,8 +39,8 @@ Description:
What: /sys/module/xen_blkback/parameters/feature_persistent
Date: September 2020
KernelVersion: 5.10
-Contact: SeongJae Park <sj@kernel.org>
+Contact: Maximilian Heyne <mheyne@amazon.de>
Description:
Whether to enable the persistent grants feature or not. Note
- that this option only takes effect on newly created backends.
+ that this option only takes effect on newly connected backends.
The default is Y (enable).
diff --git a/Documentation/ABI/testing/sysfs-driver-xen-blkfront b/Documentation/ABI/testing/sysfs-driver-xen-blkfront
index 61fd173fabfe..4d36c5a10546 100644
--- a/Documentation/ABI/testing/sysfs-driver-xen-blkfront
+++ b/Documentation/ABI/testing/sysfs-driver-xen-blkfront
@@ -12,8 +12,8 @@ Description:
What: /sys/module/xen_blkfront/parameters/feature_persistent
Date: September 2020
KernelVersion: 5.10
-Contact: SeongJae Park <sj@kernel.org>
+Contact: Maximilian Heyne <mheyne@amazon.de>
Description:
Whether to enable the persistent grants feature or not. Note
- that this option only takes effect on newly created frontends.
+ that this option only takes effect on newly connected frontends.
The default is Y (enable).
diff --git a/Documentation/ABI/testing/sysfs-driver-xilinx-tmr-manager b/Documentation/ABI/testing/sysfs-driver-xilinx-tmr-manager
new file mode 100644
index 000000000000..57b9b68a73ee
--- /dev/null
+++ b/Documentation/ABI/testing/sysfs-driver-xilinx-tmr-manager
@@ -0,0 +1,16 @@
+What: /sys/devices/platform/amba_pl/<dev>/errcnt
+Date: Nov 2022
+Contact: appana.durga.kedareswara.rao@amd.com
+Description: This control file provides the fault detection count.
+ This file cannot be written.
+ Example:
+ # cat /sys/devices/platform/amba_pl/44a10000.tmr_manager/errcnt
+ 1
+
+What: /sys/devices/platform/amba_pl/<dev>/dis_block_break
+Date: Nov 2022
+Contact: appana.durga.kedareswara.rao@amd.com
+Description: Write any value to it, This control file enables the break signal.
+ This file is write only.
+ Example:
+ # echo <any value> > /sys/devices/platform/amba_pl/44a10000.tmr_manager/dis_block_break
diff --git a/Documentation/ABI/testing/sysfs-driver-zynqmp-fpga b/Documentation/ABI/testing/sysfs-driver-zynqmp-fpga
new file mode 100644
index 000000000000..8f93d27b6d91
--- /dev/null
+++ b/Documentation/ABI/testing/sysfs-driver-zynqmp-fpga
@@ -0,0 +1,73 @@
+What: /sys/bus/platform/drivers/zynqmp_fpga_manager/firmware:zynqmp-firmware:pcap/status
+Date: February 2023
+KernelVersion: 6.4
+Contact: Nava kishore Manne <nava.kishore.manne@amd.com>
+Description: (RO) Read fpga status.
+ Read returns a hexadecimal value that tells the current status
+ of the FPGA device. Each bit position in the status value is
+ described Below(see ug570 chapter 9).
+ https://docs.xilinx.com/v/u/en-US/ug570-ultrascale-configuration
+
+ ====================== ==============================================
+ BIT(0) 0: No CRC error
+ 1: CRC error
+
+ BIT(1) 0: Decryptor security not set
+ 1: Decryptor security set
+
+ BIT(2) 0: MMCMs/PLLs are not locked
+ 1: MMCMs/PLLs are locked
+
+ BIT(3) 0: DCI not matched
+ 1: DCI matched
+
+ BIT(4) 0: Start-up sequence has not finished
+ 1: Start-up sequence has finished
+
+ BIT(5) 0: All I/Os are placed in High-Z state
+ 1: All I/Os behave as configured
+
+ BIT(6) 0: Flip-flops and block RAM are write disabled
+ 1: Flip-flops and block RAM are write enabled
+
+ BIT(7) 0: GHIGH_B_STATUS asserted
+ 1: GHIGH_B_STATUS deasserted
+
+ BIT(8) to BIT(10) Status of the mode pins
+
+ BIT(11) 0: Initialization has not finished
+ 1: Initialization finished
+
+ BIT(12) Value on INIT_B_PIN pin
+
+ BIT(13) 0: Signal not released
+ 1: Signal released
+
+ BIT(14) Value on DONE_PIN pin.
+
+ BIT(15) 0: No IDCODE_ERROR
+ 1: IDCODE_ERROR
+
+ BIT(16) 0: No SECURITY_ERROR
+ 1: SECURITY_ERROR
+
+ BIT(17) System Monitor over-temperature if set
+
+ BIT(18) to BIT(20) Start-up state machine (0 to 7)
+ Phase 0 = 000
+ Phase 1 = 001
+ Phase 2 = 011
+ Phase 3 = 010
+ Phase 4 = 110
+ Phase 5 = 111
+ Phase 6 = 101
+ Phase 7 = 100
+
+ BIT(25) to BIT(26) Indicates the detected bus width
+ 00 = x1
+ 01 = x8
+ 10 = x16
+ 11 = x32
+ ====================== ==============================================
+
+ The other bits are reserved.
diff --git a/Documentation/ABI/testing/sysfs-edac-ecs b/Documentation/ABI/testing/sysfs-edac-ecs
new file mode 100644
index 000000000000..87c885c4eb1a
--- /dev/null
+++ b/Documentation/ABI/testing/sysfs-edac-ecs
@@ -0,0 +1,74 @@
+What: /sys/bus/edac/devices/<dev-name>/ecs_fruX
+Date: March 2025
+KernelVersion: 6.15
+Contact: linux-edac@vger.kernel.org
+Description:
+ The sysfs EDAC bus devices /<dev-name>/ecs_fruX subdirectory
+ pertains to the memory media ECS (Error Check Scrub) control
+ feature, where <dev-name> directory corresponds to a device
+ registered with the EDAC device driver for the ECS feature.
+ /ecs_fruX belongs to the media FRUs (Field Replaceable Unit)
+ under the memory device.
+
+ The sysfs ECS attr nodes are only present if the parent
+ driver has implemented the corresponding attr callback
+ function and provided the necessary operations to the EDAC
+ device driver during registration.
+
+What: /sys/bus/edac/devices/<dev-name>/ecs_fruX/log_entry_type
+Date: March 2025
+KernelVersion: 6.15
+Contact: linux-edac@vger.kernel.org
+Description:
+ (RW) The log entry type of how the DDR5 ECS log is reported.
+
+ - 0 - per DRAM.
+
+ - 1 - per memory media FRU.
+
+ - All other values are reserved.
+
+What: /sys/bus/edac/devices/<dev-name>/ecs_fruX/mode
+Date: March 2025
+KernelVersion: 6.15
+Contact: linux-edac@vger.kernel.org
+Description:
+ (RW) The mode of how the DDR5 ECS counts the errors.
+ Error count is tracked based on two different modes
+ selected by DDR5 ECS Control Feature - Codeword mode and
+ Row Count mode. If the ECS is under Codeword mode, then
+ the error count increments each time a codeword with check
+ bit errors is detected. If the ECS is under Row Count mode,
+ then the error counter increments each time a row with
+ check bit errors is detected.
+
+ - 0 - ECS counts rows in the memory media that have ECC errors.
+
+ - 1 - ECS counts codewords with errors, specifically, it counts
+ the number of ECC-detected errors in the memory media.
+
+ - All other values are reserved.
+
+What: /sys/bus/edac/devices/<dev-name>/ecs_fruX/reset
+Date: March 2025
+KernelVersion: 6.15
+Contact: linux-edac@vger.kernel.org
+Description:
+ (WO) ECS reset ECC counter.
+
+ - 1 - reset ECC counter to the default value.
+
+ - All other values are reserved.
+
+What: /sys/bus/edac/devices/<dev-name>/ecs_fruX/threshold
+Date: March 2025
+KernelVersion: 6.15
+Contact: linux-edac@vger.kernel.org
+Description:
+ (RW) DDR5 ECS threshold count per gigabits of memory cells.
+ The ECS error count is subject to the ECS Threshold count
+ per Gbit, which masks error counts less than the Threshold.
+
+ Supported values are 256, 1024 and 4096.
+
+ All other values are reserved.
diff --git a/Documentation/ABI/testing/sysfs-edac-memory-repair b/Documentation/ABI/testing/sysfs-edac-memory-repair
new file mode 100644
index 000000000000..0434a3b23ff3
--- /dev/null
+++ b/Documentation/ABI/testing/sysfs-edac-memory-repair
@@ -0,0 +1,206 @@
+What: /sys/bus/edac/devices/<dev-name>/mem_repairX
+Date: March 2025
+KernelVersion: 6.15
+Contact: linux-edac@vger.kernel.org
+Description:
+ The sysfs EDAC bus devices /<dev-name>/mem_repairX subdirectory
+ pertains to the memory media repair features control, such as
+ PPR (Post Package Repair), memory sparing etc, where <dev-name>
+ directory corresponds to a device registered with the EDAC
+ device driver for the memory repair features.
+
+ Post Package Repair is a maintenance operation requests the memory
+ device to perform a repair operation on its media. It is a memory
+ self-healing feature that fixes a failing memory location by
+ replacing it with a spare row in a DRAM device. For example, a
+ CXL memory device with DRAM components that support PPR features may
+ implement PPR maintenance operations. DRAM components may support
+ two types of PPR functions: hard PPR, for a permanent row repair, and
+ soft PPR, for a temporary row repair. Soft PPR may be much faster
+ than hard PPR, but the repair is lost with a power cycle.
+
+ The sysfs attributes nodes for a repair feature are only
+ present if the parent driver has implemented the corresponding
+ attr callback function and provided the necessary operations
+ to the EDAC device driver during registration.
+
+ In some states of system configuration (e.g. before address
+ decoders have been configured), memory devices (e.g. CXL)
+ may not have an active mapping in the main host address
+ physical address map. As such, the memory to repair must be
+ identified by a device specific physical addressing scheme
+ using a device physical address(DPA). The DPA and other control
+ attributes to use will be presented in related error records.
+
+What: /sys/bus/edac/devices/<dev-name>/mem_repairX/repair_type
+Date: March 2025
+KernelVersion: 6.15
+Contact: linux-edac@vger.kernel.org
+Description:
+ (RO) Memory repair type. For eg. post package repair,
+ memory sparing etc. Valid values are:
+
+ - ppr - Post package repair.
+
+ - cacheline-sparing
+
+ - row-sparing
+
+ - bank-sparing
+
+ - rank-sparing
+
+ - All other values are reserved.
+
+What: /sys/bus/edac/devices/<dev-name>/mem_repairX/persist_mode
+Date: March 2025
+KernelVersion: 6.15
+Contact: linux-edac@vger.kernel.org
+Description:
+ (RW) Get/Set the current persist repair mode set for a
+ repair function. Persist repair modes supported in the
+ device, based on a memory repair function, either is temporary,
+ which is lost with a power cycle or permanent. Valid values are:
+
+ - 0 - Soft memory repair (temporary repair).
+
+ - 1 - Hard memory repair (permanent repair).
+
+ - All other values are reserved.
+
+What: /sys/bus/edac/devices/<dev-name>/mem_repairX/repair_safe_when_in_use
+Date: March 2025
+KernelVersion: 6.15
+Contact: linux-edac@vger.kernel.org
+Description:
+ (RO) True if memory media is accessible and data is retained
+ during the memory repair operation.
+ The data may not be retained and memory requests may not be
+ correctly processed during a repair operation. In such case
+ repair operation can not be executed at runtime. The memory
+ must be taken offline.
+
+What: /sys/bus/edac/devices/<dev-name>/mem_repairX/hpa
+Date: March 2025
+KernelVersion: 6.15
+Contact: linux-edac@vger.kernel.org
+Description:
+ (RW) Host Physical Address (HPA) of the memory to repair.
+ The HPA to use will be provided in related error records.
+
+What: /sys/bus/edac/devices/<dev-name>/mem_repairX/dpa
+Date: March 2025
+KernelVersion: 6.15
+Contact: linux-edac@vger.kernel.org
+Description:
+ (RW) Device Physical Address (DPA) of the memory to repair.
+ The specific DPA to use will be provided in related error
+ records.
+
+ In some states of system configuration (e.g. before address
+ decoders have been configured), memory devices (e.g. CXL)
+ may not have an active mapping in the main host address
+ physical address map. As such, the memory to repair must be
+ identified by a device specific physical addressing scheme
+ using a DPA. The device physical address(DPA) to use will be
+ presented in related error records.
+
+What: /sys/bus/edac/devices/<dev-name>/mem_repairX/nibble_mask
+Date: March 2025
+KernelVersion: 6.15
+Contact: linux-edac@vger.kernel.org
+Description:
+ (RW) Read/Write Nibble mask of the memory to repair.
+ Nibble mask identifies one or more nibbles in error on the
+ memory bus that produced the error event. Nibble Mask bit 0
+ shall be set if nibble 0 on the memory bus produced the
+ event, etc. For example, CXL PPR and sparing, a nibble mask
+ bit set to 1 indicates the request to perform repair
+ operation in the specific device. All nibble mask bits set
+ to 1 indicates the request to perform the operation in all
+ devices. Eg. for CXL memory repair, the specific value of
+ nibble mask to use will be provided in related error records.
+ For more details, See nibble mask field in CXL spec ver 3.1,
+ section 8.2.9.7.1.2 Table 8-103 soft PPR and section
+ 8.2.9.7.1.3 Table 8-104 hard PPR, section 8.2.9.7.1.4
+ Table 8-105 memory sparing.
+
+What: /sys/bus/edac/devices/<dev-name>/mem_repairX/min_hpa
+What: /sys/bus/edac/devices/<dev-name>/mem_repairX/max_hpa
+What: /sys/bus/edac/devices/<dev-name>/mem_repairX/min_dpa
+What: /sys/bus/edac/devices/<dev-name>/mem_repairX/max_dpa
+Date: March 2025
+KernelVersion: 6.15
+Contact: linux-edac@vger.kernel.org
+Description:
+ (RW) The supported range of memory address that is to be
+ repaired. The memory device may give the supported range of
+ attributes to use and it will depend on the memory device
+ and the portion of memory to repair.
+ The userspace may receive the specific value of attributes
+ to use for a repair operation from the memory device via
+ related error records and trace events, for eg. CXL DRAM
+ and CXL general media error records in CXL memory devices.
+
+What: /sys/bus/edac/devices/<dev-name>/mem_repairX/bank_group
+What: /sys/bus/edac/devices/<dev-name>/mem_repairX/bank
+What: /sys/bus/edac/devices/<dev-name>/mem_repairX/rank
+What: /sys/bus/edac/devices/<dev-name>/mem_repairX/row
+What: /sys/bus/edac/devices/<dev-name>/mem_repairX/column
+What: /sys/bus/edac/devices/<dev-name>/mem_repairX/channel
+What: /sys/bus/edac/devices/<dev-name>/mem_repairX/sub_channel
+Date: March 2025
+KernelVersion: 6.15
+Contact: linux-edac@vger.kernel.org
+Description:
+ (RW) The control attributes for the memory to be repaired.
+ The specific value of attributes to use depends on the
+ portion of memory to repair and will be reported to the host
+ in related error records and be available to userspace
+ in trace events, such as CXL DRAM and CXL general media
+ error records of CXL memory devices.
+
+ When readng back these attributes, it returns the current
+ value of memory requested to be repaired.
+
+ bank_group - The bank group of the memory to repair.
+
+ bank - The bank number of the memory to repair.
+
+ rank - The rank of the memory to repair. Rank is defined as a
+ set of memory devices on a channel that together execute a
+ transaction.
+
+ row - The row number of the memory to repair.
+
+ column - The column number of the memory to repair.
+
+ channel - The channel of the memory to repair. Channel is
+ defined as an interface that can be independently accessed
+ for a transaction.
+
+ sub_channel - The subchannel of the memory to repair.
+
+ The requirement to set these attributes varies based on the
+ repair function. The attributes in sysfs are not present
+ unless required for a repair function.
+
+ For example, CXL spec ver 3.1, Section 8.2.9.7.1.2 Table 8-103
+ soft PPR and Section 8.2.9.7.1.3 Table 8-104 hard PPR operations,
+ these attributes are not required to set. CXL spec ver 3.1,
+ Section 8.2.9.7.1.4 Table 8-105 memory sparing, these attributes
+ are required to set based on memory sparing granularity.
+
+What: /sys/bus/edac/devices/<dev-name>/mem_repairX/repair
+Date: March 2025
+KernelVersion: 6.15
+Contact: linux-edac@vger.kernel.org
+Description:
+ (WO) Issue the memory repair operation for the specified
+ memory repair attributes. The operation may fail if resources
+ are insufficient based on the requirements of the memory
+ device and repair function.
+
+ - 1 - Issue the repair operation.
+
+ - All other values are reserved.
diff --git a/Documentation/ABI/testing/sysfs-edac-scrub b/Documentation/ABI/testing/sysfs-edac-scrub
new file mode 100644
index 000000000000..ab6014743da5
--- /dev/null
+++ b/Documentation/ABI/testing/sysfs-edac-scrub
@@ -0,0 +1,85 @@
+What: /sys/bus/edac/devices/<dev-name>/scrubX
+Date: March 2025
+KernelVersion: 6.15
+Contact: linux-edac@vger.kernel.org
+Description:
+ The sysfs EDAC bus devices /<dev-name>/scrubX subdirectory
+ belongs to an instance of memory scrub control feature,
+ where <dev-name> directory corresponds to a device/memory
+ region registered with the EDAC device driver for the
+ scrub control feature.
+
+ The sysfs scrub attr nodes are only present if the parent
+ driver has implemented the corresponding attr callback
+ function and provided the necessary operations to the EDAC
+ device driver during registration.
+
+What: /sys/bus/edac/devices/<dev-name>/scrubX/addr
+Date: March 2025
+KernelVersion: 6.15
+Contact: linux-edac@vger.kernel.org
+Description:
+ (RW) The base address of the memory region to be scrubbed
+ for on-demand scrubbing. Setting address starts scrubbing.
+ The size must be set before that.
+
+ The readback addr value is non-zero if the requested
+ on-demand scrubbing is in progress, zero otherwise.
+
+What: /sys/bus/edac/devices/<dev-name>/scrubX/size
+Date: March 2025
+KernelVersion: 6.15
+Contact: linux-edac@vger.kernel.org
+Description:
+ (RW) The size of the memory region to be scrubbed
+ (on-demand scrubbing).
+
+What: /sys/bus/edac/devices/<dev-name>/scrubX/enable_background
+Date: March 2025
+KernelVersion: 6.15
+Contact: linux-edac@vger.kernel.org
+Description:
+ (RW) Start/Stop background (patrol) scrubbing if supported.
+
+What: /sys/bus/edac/devices/<dev-name>/scrubX/min_cycle_duration
+Date: March 2025
+KernelVersion: 6.15
+Contact: linux-edac@vger.kernel.org
+Description:
+ (RO) Supported minimum scrub cycle duration in seconds
+ by the memory scrubber.
+
+ Device-based scrub: returns the minimum scrub cycle
+ supported by the memory device.
+
+ Region-based scrub: returns the max of minimum scrub cycles
+ supported by individual memory devices that back the region.
+
+What: /sys/bus/edac/devices/<dev-name>/scrubX/max_cycle_duration
+Date: March 2025
+KernelVersion: 6.15
+Contact: linux-edac@vger.kernel.org
+Description:
+ (RO) Supported maximum scrub cycle duration in seconds
+ by the memory scrubber.
+
+ Device-based scrub: returns the maximum scrub cycle supported
+ by the memory device.
+
+ Region-based scrub: returns the min of maximum scrub cycles
+ supported by individual memory devices that back the region.
+
+ If the memory device does not provide maximum scrub cycle
+ information, return the maximum supported value of the scrub
+ cycle field.
+
+What: /sys/bus/edac/devices/<dev-name>/scrubX/current_cycle_duration
+Date: March 2025
+KernelVersion: 6.15
+Contact: linux-edac@vger.kernel.org
+Description:
+ (RW) The current scrub cycle duration in seconds and must be
+ within the supported range by the memory scrubber.
+
+ Scrub has an overhead when running and that may want to be
+ reduced by taking longer to do it.
diff --git a/Documentation/ABI/testing/sysfs-firmware-acpi b/Documentation/ABI/testing/sysfs-firmware-acpi
index 819939d858c9..72e7c9161ce7 100644
--- a/Documentation/ABI/testing/sysfs-firmware-acpi
+++ b/Documentation/ABI/testing/sysfs-firmware-acpi
@@ -84,7 +84,7 @@ Description:
hotplug events associated with the given class of
devices and will allow those devices to be ejected with
the help of the _EJ0 control method. Unsetting it
- effectively disables hotplug for the correspoinding
+ effectively disables hotplug for the corresponding
class of devices.
======== =======================================================
@@ -108,15 +108,15 @@ Description:
number of a "General Purpose Events" (GPE).
A GPE vectors to a specified handler in AML, which
- can do a anything the BIOS writer wants from
+ can do anything the BIOS writer wants from
OS context. GPE 0x12, for example, would vector
to a level or edge handler called _L12 or _E12.
The handler may do its business and return.
- Or the handler may send send a Notify event
+ Or the handler may send a Notify event
to a Linux device driver registered on an ACPI device,
such as a battery, or a processor.
- To figure out where all the SCI's are coming from,
+ To figure out where all the SCIs are coming from,
/sys/firmware/acpi/interrupts contains a file listing
every possible source, and the count of how many
times it has triggered::
@@ -248,3 +248,24 @@ Description:
# cat ff_pwr_btn
7 enabled
+What: /sys/firmware/acpi/memory_ranges/rangeX
+Date: February 2025
+Contact: Tony Luck <tony.luck@intel.com>
+Description:
+ On systems with the ACPI MRRM table reports the parameters for
+ each range.
+
+ base: Starting system physical address.
+
+ length: Length of this range in bytes.
+
+ node: NUMA node that this range belongs to. Negative numbers
+ indicate that the node number could not be determined (e.g
+ for an address range that is reserved for future hot add of
+ memory).
+
+ local_region_id: ID associated with access by agents
+ local to this range of addresses.
+
+ remote_region_id: ID associated with access by agents
+ non-local to this range of addresses.
diff --git a/Documentation/ABI/testing/sysfs-firmware-dmi-entries b/Documentation/ABI/testing/sysfs-firmware-dmi-entries
index fe0289c87768..b6c23807b804 100644
--- a/Documentation/ABI/testing/sysfs-firmware-dmi-entries
+++ b/Documentation/ABI/testing/sysfs-firmware-dmi-entries
@@ -2,7 +2,7 @@ What: /sys/firmware/dmi/entries/
Date: February 2011
Contact: Mike Waychison <mikew@google.com>
Description:
- Many machines' firmware (x86 and ia64) export DMI /
+ Many machines' firmware (x86 and arm64) export DMI /
SMBIOS tables to the operating system. Getting at this
information is often valuable to userland, especially in
cases where there are OEM extensions used.
diff --git a/Documentation/ABI/testing/sysfs-firmware-efi b/Documentation/ABI/testing/sysfs-firmware-efi
index 5e4d0b27cdfe..927e362d4974 100644
--- a/Documentation/ABI/testing/sysfs-firmware-efi
+++ b/Documentation/ABI/testing/sysfs-firmware-efi
@@ -36,3 +36,10 @@ Description: Displays the content of the Runtime Configuration Interface
Table version 2 on Dell EMC PowerEdge systems in binary format
Users: It is used by Dell EMC OpenManage Server Administrator tool to
populate BIOS setup page.
+
+What: /sys/firmware/efi/ovmf_debug_log
+Date: July 2025
+Contact: Gerd Hoffmann <kraxel@redhat.com>, linux-efi@vger.kernel.org
+Description: Displays the content of the OVMF debug log buffer. The file is
+ only present in case the firmware supports logging to a memory
+ buffer.
diff --git a/Documentation/ABI/testing/sysfs-firmware-initrd b/Documentation/ABI/testing/sysfs-firmware-initrd
new file mode 100644
index 000000000000..20bf7cf77a19
--- /dev/null
+++ b/Documentation/ABI/testing/sysfs-firmware-initrd
@@ -0,0 +1,8 @@
+What: /sys/firmware/initrd
+Date: December 2023
+Contact: Alexander Graf <graf@amazon.com>
+Description:
+ When the kernel was booted with an initrd and the
+ "retain_initrd" option is set on the kernel command
+ line, /sys/firmware/initrd contains the contents of the
+ initrd that the kernel was booted with.
diff --git a/Documentation/ABI/testing/sysfs-firmware-opal-powercap b/Documentation/ABI/testing/sysfs-firmware-opal-powercap
index c9b66ec4f165..d2d12ee89288 100644
--- a/Documentation/ABI/testing/sysfs-firmware-opal-powercap
+++ b/Documentation/ABI/testing/sysfs-firmware-opal-powercap
@@ -1,6 +1,6 @@
What: /sys/firmware/opal/powercap
Date: August 2017
-Contact: Linux for PowerPC mailing list <linuxppc-dev@ozlabs.org>
+Contact: Linux for PowerPC mailing list <linuxppc-dev@lists.ozlabs.org>
Description: Powercap directory for Powernv (P8, P9) servers
Each folder in this directory contains a
@@ -11,7 +11,7 @@ What: /sys/firmware/opal/powercap/system-powercap
/sys/firmware/opal/powercap/system-powercap/powercap-max
/sys/firmware/opal/powercap/system-powercap/powercap-current
Date: August 2017
-Contact: Linux for PowerPC mailing list <linuxppc-dev@ozlabs.org>
+Contact: Linux for PowerPC mailing list <linuxppc-dev@lists.ozlabs.org>
Description: System powercap directory and attributes applicable for
Powernv (P8, P9) servers
diff --git a/Documentation/ABI/testing/sysfs-firmware-opal-psr b/Documentation/ABI/testing/sysfs-firmware-opal-psr
index cc2ece70e365..1e55b56a0f89 100644
--- a/Documentation/ABI/testing/sysfs-firmware-opal-psr
+++ b/Documentation/ABI/testing/sysfs-firmware-opal-psr
@@ -1,6 +1,6 @@
What: /sys/firmware/opal/psr
Date: August 2017
-Contact: Linux for PowerPC mailing list <linuxppc-dev@ozlabs.org>
+Contact: Linux for PowerPC mailing list <linuxppc-dev@lists.ozlabs.org>
Description: Power-Shift-Ratio directory for Powernv P9 servers
Power-Shift-Ratio allows to provide hints the firmware
@@ -10,7 +10,7 @@ Description: Power-Shift-Ratio directory for Powernv P9 servers
What: /sys/firmware/opal/psr/cpu_to_gpu_X
Date: August 2017
-Contact: Linux for PowerPC mailing list <linuxppc-dev@ozlabs.org>
+Contact: Linux for PowerPC mailing list <linuxppc-dev@lists.ozlabs.org>
Description: PSR sysfs attributes for Powernv P9 servers
Power-Shift-Ratio between CPU and GPU for a given chip
diff --git a/Documentation/ABI/testing/sysfs-firmware-opal-sensor-groups b/Documentation/ABI/testing/sysfs-firmware-opal-sensor-groups
index 3a2dfe542e8c..fcb1fb4795b6 100644
--- a/Documentation/ABI/testing/sysfs-firmware-opal-sensor-groups
+++ b/Documentation/ABI/testing/sysfs-firmware-opal-sensor-groups
@@ -1,6 +1,6 @@
What: /sys/firmware/opal/sensor_groups
Date: August 2017
-Contact: Linux for PowerPC mailing list <linuxppc-dev@ozlabs.org>
+Contact: Linux for PowerPC mailing list <linuxppc-dev@lists.ozlabs.org>
Description: Sensor groups directory for POWER9 powernv servers
Each folder in this directory contains a sensor group
@@ -11,7 +11,7 @@ Description: Sensor groups directory for POWER9 powernv servers
What: /sys/firmware/opal/sensor_groups/<sensor_group_name>/clear
Date: August 2017
-Contact: Linux for PowerPC mailing list <linuxppc-dev@ozlabs.org>
+Contact: Linux for PowerPC mailing list <linuxppc-dev@lists.ozlabs.org>
Description: Sysfs file to clear the min-max of all the sensors
belonging to the group.
diff --git a/Documentation/ABI/testing/sysfs-firmware-papr-energy-scale-info b/Documentation/ABI/testing/sysfs-firmware-papr-energy-scale-info
new file mode 100644
index 000000000000..f5cefb81ac9d
--- /dev/null
+++ b/Documentation/ABI/testing/sysfs-firmware-papr-energy-scale-info
@@ -0,0 +1,29 @@
+What: /sys/firmware/papr/energy_scale_info
+Date: February 2022
+Contact: Linux for PowerPC mailing list <linuxppc-dev@lists.ozlabs.org>
+Description: Directory hosting a set of platform attributes like
+ energy/frequency on Linux running as a PAPR guest.
+
+ Each file in a directory contains a platform
+ attribute hierarchy pertaining to performance/
+ energy-savings mode and processor frequency.
+
+What: /sys/firmware/papr/energy_scale_info/<id>
+Date: February 2022
+Contact: Linux for PowerPC mailing list <linuxppc-dev@lists.ozlabs.org>
+Description: Energy, frequency attributes directory for POWERVM servers
+
+What: /sys/firmware/papr/energy_scale_info/<id>/desc
+Date: February 2022
+Contact: Linux for PowerPC mailing list <linuxppc-dev@lists.ozlabs.org>
+Description: String description of the energy attribute of <id>
+
+What: /sys/firmware/papr/energy_scale_info/<id>/value
+Date: February 2022
+Contact: Linux for PowerPC mailing list <linuxppc-dev@lists.ozlabs.org>
+Description: Numeric value of the energy attribute of <id>
+
+What: /sys/firmware/papr/energy_scale_info/<id>/value_desc
+Date: February 2022
+Contact: Linux for PowerPC mailing list <linuxppc-dev@lists.ozlabs.org>
+Description: String value of the energy attribute of <id>
diff --git a/Documentation/ABI/testing/sysfs-firmware-qemu_fw_cfg b/Documentation/ABI/testing/sysfs-firmware-qemu_fw_cfg
index ee0d6dbc810e..54d1bfd0db12 100644
--- a/Documentation/ABI/testing/sysfs-firmware-qemu_fw_cfg
+++ b/Documentation/ABI/testing/sysfs-firmware-qemu_fw_cfg
@@ -12,8 +12,9 @@ Description:
configuration data to the guest userspace.
The authoritative guest-side hardware interface documentation
- to the fw_cfg device can be found in "docs/specs/fw_cfg.txt"
- in the QEMU source tree.
+ to the fw_cfg device can be found in "docs/specs/fw_cfg.rst"
+ in the QEMU source tree, or online at:
+ https://qemu-project.gitlab.io/qemu/specs/fw_cfg.html
**SysFS fw_cfg Interface**
diff --git a/Documentation/ABI/testing/sysfs-firmware-sgi_uv b/Documentation/ABI/testing/sysfs-firmware-sgi_uv
index 12ed843e1d3e..7fe9244b87bb 100644
--- a/Documentation/ABI/testing/sysfs-firmware-sgi_uv
+++ b/Documentation/ABI/testing/sysfs-firmware-sgi_uv
@@ -102,12 +102,12 @@ Description:
conn_port
The conn_hub entry contains a value representing the unique
- oridinal value of the hub on the other end of the fabric
+ ordinal value of the hub on the other end of the fabric
cable plugged into the port. If the port is disconnected,
the value returned will be -1.
The conn_port entry contains a value representing the unique
- oridinal value of the port on the other end of the fabric cable
+ ordinal value of the port on the other end of the fabric cable
plugged into the port. If the port is disconnected, the value
returned will be -1.
diff --git a/Documentation/ABI/testing/sysfs-firmware-turris-mox-rwtm b/Documentation/ABI/testing/sysfs-firmware-turris-mox-rwtm
index ea5e5b489bc7..26741cb84504 100644
--- a/Documentation/ABI/testing/sysfs-firmware-turris-mox-rwtm
+++ b/Documentation/ABI/testing/sysfs-firmware-turris-mox-rwtm
@@ -12,15 +12,6 @@ Contact: Marek Behún <kabel@kernel.org>
Description: (Read) MAC addresses burned into eFuses of this Turris Mox board.
Format: %pM
-What: /sys/firmware/turris-mox-rwtm/pubkey
-Date: August 2019
-KernelVersion: 5.4
-Contact: Marek Behún <kabel@kernel.org>
-Description: (Read) ECDSA public key (in pubkey hex compressed form) computed
- as pair to the ECDSA private key burned into eFuses of this
- Turris Mox Board.
- Format: string
-
What: /sys/firmware/turris-mox-rwtm/ram_size
Date: August 2019
KernelVersion: 5.4
diff --git a/Documentation/ABI/testing/sysfs-fs-erofs b/Documentation/ABI/testing/sysfs-fs-erofs
index 05482374a741..76d9808ed581 100644
--- a/Documentation/ABI/testing/sysfs-fs-erofs
+++ b/Documentation/ABI/testing/sysfs-fs-erofs
@@ -4,13 +4,42 @@ Contact: "Huang Jianan" <huangjianan@oppo.com>
Description: Shows all enabled kernel features.
Supported features:
zero_padding, compr_cfgs, big_pcluster, chunked_file,
- device_table, compr_head2, sb_chksum.
+ device_table, compr_head2, sb_chksum, ztailpacking,
+ dedupe, fragments, 48bit, metabox.
What: /sys/fs/erofs/<disk>/sync_decompress
Date: November 2021
Contact: "Huang Jianan" <huangjianan@oppo.com>
-Description: Control strategy of sync decompression
+Description: Control strategy of sync decompression:
+
- 0 (default, auto): enable for readpage, and enable for
- readahead on atomic contexts only,
+ readahead on atomic contexts only.
- 1 (force on): enable for readpage and readahead.
- 2 (force off): disable for all situations.
+
+What: /sys/fs/erofs/<disk>/drop_caches
+Date: November 2024
+Contact: "Guo Chunhai" <guochunhai@vivo.com>
+Description: Writing to this will drop compression-related caches,
+ currently used to drop in-memory pclusters and cached
+ compressed folios:
+
+ - 1 : invalidate cached compressed folios
+ - 2 : drop in-memory pclusters
+ - 3 : drop in-memory pclusters and cached compressed folios
+
+What: /sys/fs/erofs/accel
+Date: May 2025
+Contact: "Bo Liu" <liubo03@inspur.com>
+Description: Used to set or show hardware accelerators in effect
+ and multiple accelerators are separated by '\n'.
+ Supported accelerator(s): qat_deflate.
+ Disable all accelerators with an empty string (echo > accel).
+
+What: /sys/fs/erofs/<disk>/dir_ra_bytes
+Date: July 2025
+Contact: "Chao Yu" <chao@kernel.org>
+Description: Used to set or show readahead bytes during readdir(), by
+ default the value is 16384.
+
+ - 0: disable readahead.
diff --git a/Documentation/ABI/testing/sysfs-fs-f2fs b/Documentation/ABI/testing/sysfs-fs-f2fs
index 2416b03ff283..770470e0598b 100644
--- a/Documentation/ABI/testing/sysfs-fs-f2fs
+++ b/Documentation/ABI/testing/sysfs-fs-f2fs
@@ -49,15 +49,23 @@ Contact: "Jaegeuk Kim" <jaegeuk.kim@samsung.com>
Description: Controls the in-place-update policy.
updates in f2fs. User can set:
- ==== =================
- 0x01 F2FS_IPU_FORCE
- 0x02 F2FS_IPU_SSR
- 0x04 F2FS_IPU_UTIL
- 0x08 F2FS_IPU_SSR_UTIL
- 0x10 F2FS_IPU_FSYNC
- 0x20 F2FS_IPU_ASYNC,
- 0x40 F2FS_IPU_NOCACHE
- ==== =================
+ ===== =============== ===================================================
+ value policy description
+ 0x00 DISABLE disable IPU(=default option in LFS mode)
+ 0x01 FORCE all the time
+ 0x02 SSR if SSR mode is activated
+ 0x04 UTIL if FS utilization is over threshold
+ 0x08 SSR_UTIL if SSR mode is activated and FS utilization is over
+ threshold
+ 0x10 FSYNC activated in fsync path only for high performance
+ flash storages. IPU will be triggered only if the
+ # of dirty pages over min_fsync_blocks.
+ (=default option)
+ 0x20 ASYNC do IPU given by asynchronous write requests
+ 0x40 NOCACHE disable IPU bio cache
+ 0x80 HONOR_OPU_WRITE use OPU write prior to IPU write if inode has
+ FI_OPU_WRITE flag
+ ===== =============== ===================================================
Refer segment.h for details.
@@ -94,9 +102,42 @@ What: /sys/fs/f2fs/<disk>/max_small_discards
Date: November 2013
Contact: "Jaegeuk Kim" <jaegeuk.kim@samsung.com>
Description: Controls the issue rate of discard commands that consist of small
- blocks less than 2MB. The candidates to be discarded are cached until
- checkpoint is triggered, and issued during the checkpoint.
- By default, it is disabled with 0.
+ blocks less than 2MB. The candidates to be discarded are cached during
+ checkpoint, and issued by issue_discard thread after checkpoint.
+ It is enabled by default.
+
+What: /sys/fs/f2fs/<disk>/max_ordered_discard
+Date: October 2022
+Contact: "Yangtao Li" <frank.li@vivo.com>
+Description: Controls the maximum ordered discard, the unit size is one block(4KB).
+ Set it to 16 by default.
+
+What: /sys/fs/f2fs/<disk>/max_discard_request
+Date: December 2021
+Contact: "Konstantin Vyshetsky" <vkon@google.com>
+Description: Controls the number of discards a thread will issue at a time.
+ Higher number will allow the discard thread to finish its work
+ faster, at the cost of higher latency for incoming I/O.
+
+What: /sys/fs/f2fs/<disk>/min_discard_issue_time
+Date: December 2021
+Contact: "Konstantin Vyshetsky" <vkon@google.com>
+Description: Controls the interval the discard thread will wait between
+ issuing discard requests when there are discards to be issued and
+ no I/O aware interruptions occur.
+
+What: /sys/fs/f2fs/<disk>/mid_discard_issue_time
+Date: December 2021
+Contact: "Konstantin Vyshetsky" <vkon@google.com>
+Description: Controls the interval the discard thread will wait between
+ issuing discard requests when there are discards to be issued and
+ an I/O aware interruption occurs.
+
+What: /sys/fs/f2fs/<disk>/max_discard_issue_time
+Date: December 2021
+Contact: "Konstantin Vyshetsky" <vkon@google.com>
+Description: Controls the interval the discard thread will wait when there are
+ no discard operations to be issued.
What: /sys/fs/f2fs/<disk>/discard_granularity
Date: July 2017
@@ -104,7 +145,8 @@ Contact: "Chao Yu" <yuchao0@huawei.com>
Description: Controls discard granularity of inner discard thread. Inner thread
will not issue discards with size that is smaller than granularity.
The unit size is one block(4KB), now only support configuring
- in range of [1, 512]. Default value is 4(=16KB).
+ in range of [1, 512]. Default value is 16.
+ For small devices, default value is 1.
What: /sys/fs/f2fs/<disk>/umount_discard_timeout
Date: January 2019
@@ -148,12 +190,6 @@ Description: Controls the memory footprint used by free nids and cached
nat entries. By default, 1 is set, which indicates
10 MB / 1 GB RAM.
-What: /sys/fs/f2fs/<disk>/batched_trim_sections
-Date: February 2015
-Contact: "Jaegeuk Kim" <jaegeuk@kernel.org>
-Description: Controls the trimming rate in batch mode.
- <deprecated>
-
What: /sys/fs/f2fs/<disk>/cp_interval
Date: October 2015
Contact: "Jaegeuk Kim" <jaegeuk@kernel.org>
@@ -169,7 +205,7 @@ Description: Controls the idle timing of system, if there is no FS operation
What: /sys/fs/f2fs/<disk>/discard_idle_interval
Date: September 2018
Contact: "Chao Yu" <yuchao0@huawei.com>
-Contact: "Sahitya Tummala" <stummala@codeaurora.org>
+Contact: "Sahitya Tummala" <quic_stummala@quicinc.com>
Description: Controls the idle timing of discard thread given
this time interval.
Default is 5 secs.
@@ -177,7 +213,7 @@ Description: Controls the idle timing of discard thread given
What: /sys/fs/f2fs/<disk>/gc_idle_interval
Date: September 2018
Contact: "Chao Yu" <yuchao0@huawei.com>
-Contact: "Sahitya Tummala" <stummala@codeaurora.org>
+Contact: "Sahitya Tummala" <quic_stummala@quicinc.com>
Description: Controls the idle timing for gc path. Set to 5 seconds by default.
What: /sys/fs/f2fs/<disk>/iostat_enable
@@ -207,7 +243,7 @@ Description: Shows total written kbytes issued to disk.
What: /sys/fs/f2fs/<disk>/features
Date: July 2017
Contact: "Jaegeuk Kim" <jaegeuk@kernel.org>
-Description: <deprecated: should use /sys/fs/f2fs/<disk>/feature_list/
+Description: <deprecated: should use /sys/fs/f2fs/<disk>/feature_list/>
Shows all enabled features in current device.
Supported features:
encryption, blkzoned, extra_attr, projquota, inode_checksum,
@@ -234,7 +270,7 @@ Description: Shows all enabled kernel features.
inode_checksum, flexible_inline_xattr, quota_ino,
inode_crtime, lost_found, verity, sb_checksum,
casefold, readonly, compression, test_dummy_encryption_v2,
- atomic_write, pin_file, encrypted_casefold.
+ atomic_write, pin_file, encrypted_casefold, linear_lookup.
What: /sys/fs/f2fs/<disk>/inject_rate
Date: May 2016
@@ -269,11 +305,19 @@ Description: Shows current reserved blocks in system, it may be temporarily
What: /sys/fs/f2fs/<disk>/gc_urgent
Date: August 2017
Contact: "Jaegeuk Kim" <jaegeuk@kernel.org>
-Description: Do background GC aggressively when set. When gc_urgent = 1,
- background thread starts to do GC by given gc_urgent_sleep_time
- interval. When gc_urgent = 2, F2FS will lower the bar of
- checking idle in order to process outstanding discard commands
- and GC a little bit aggressively. It is set to 0 by default.
+Description: Do background GC aggressively when set. Set to 0 by default.
+ gc urgent high(1): does GC forcibly in a period of given
+ gc_urgent_sleep_time and ignores I/O idling check. uses greedy
+ GC approach and turns SSR mode on.
+ gc urgent low(2): lowers the bar of checking I/O idling in
+ order to process outstanding discard commands and GC a
+ little bit aggressively. always uses cost benefit GC approach,
+ and will override age-threshold GC approach if ATGC is enabled
+ at the same time.
+ gc urgent mid(3): does GC forcibly in a period of given
+ gc_urgent_sleep_time and executes a mid level of I/O idling check.
+ always uses cost benefit GC approach, and will override
+ age-threshold GC approach if ATGC is enabled at the same time.
What: /sys/fs/f2fs/<disk>/gc_urgent_sleep_time
Date: August 2017
@@ -290,10 +334,10 @@ Date: January 2018
Contact: Jaegeuk Kim <jaegeuk@kernel.org>
Description: This indicates how many GC can be failed for the pinned
file. If it exceeds this, F2FS doesn't guarantee its pinning
- state. 2048 trials is set by default.
+ state. 2048 trials is set by default, and 65535 as maximum.
What: /sys/fs/f2fs/<disk>/extension_list
-Date: Feburary 2018
+Date: February 2018
Contact: "Chao Yu" <yuchao0@huawei.com>
Description: Used to control configure extension list:
- Query: cat /sys/fs/f2fs/<disk>/extension_list
@@ -303,7 +347,7 @@ Description: Used to control configure extension list:
- [c] means add/del cold file extension
What: /sys/fs/f2fs/<disk>/unusable
-Date April 2019
+Date: April 2019
Contact: "Daniel Rosenberg" <drosen@google.com>
Description: If checkpoint=disable, it displays the number of blocks that
are unusable.
@@ -311,7 +355,7 @@ Description: If checkpoint=disable, it displays the number of blocks that
would be unusable if checkpoint=disable were to be set.
What: /sys/fs/f2fs/<disk>/encoding
-Date July 2019
+Date: July 2019
Contact: "Daniel Rosenberg" <drosen@google.com>
Description: Displays name and version of the encoding set for the filesystem.
If no encoding is set, displays (none)
@@ -430,8 +474,48 @@ Description: Show status of f2fs superblock in real time.
0x800 SBI_QUOTA_SKIP_FLUSH skip flushing quota in current CP
0x1000 SBI_QUOTA_NEED_REPAIR quota file may be corrupted
0x2000 SBI_IS_RESIZEFS resizefs is in process
+ 0x4000 SBI_IS_FREEZING freefs is in process
====== ===================== =================================
+What: /sys/fs/f2fs/<disk>/stat/cp_status
+Date: September 2022
+Contact: "Chao Yu" <chao.yu@oppo.com>
+Description: Show status of f2fs checkpoint in real time.
+
+ =============================== ==============================
+ cp flag value
+ CP_UMOUNT_FLAG 0x00000001
+ CP_ORPHAN_PRESENT_FLAG 0x00000002
+ CP_COMPACT_SUM_FLAG 0x00000004
+ CP_ERROR_FLAG 0x00000008
+ CP_FSCK_FLAG 0x00000010
+ CP_FASTBOOT_FLAG 0x00000020
+ CP_CRC_RECOVERY_FLAG 0x00000040
+ CP_NAT_BITS_FLAG 0x00000080
+ CP_TRIMMED_FLAG 0x00000100
+ CP_NOCRC_RECOVERY_FLAG 0x00000200
+ CP_LARGE_NAT_BITMAP_FLAG 0x00000400
+ CP_QUOTA_NEED_FSCK_FLAG 0x00000800
+ CP_DISABLED_FLAG 0x00001000
+ CP_DISABLED_QUICK_FLAG 0x00002000
+ CP_RESIZEFS_FLAG 0x00004000
+ =============================== ==============================
+
+What: /sys/fs/f2fs/<disk>/stat/issued_discard
+Date: December 2023
+Contact: "Zhiguo Niu" <zhiguo.niu@unisoc.com>
+Description: Shows the number of issued discard.
+
+What: /sys/fs/f2fs/<disk>/stat/queued_discard
+Date: December 2023
+Contact: "Zhiguo Niu" <zhiguo.niu@unisoc.com>
+Description: Shows the number of queued discard.
+
+What: /sys/fs/f2fs/<disk>/stat/undiscard_blks
+Date: December 2023
+Contact: "Zhiguo Niu" <zhiguo.niu@unisoc.com>
+Description: Shows the total number of undiscard blocks.
+
What: /sys/fs/f2fs/<disk>/ckpt_thread_ioprio
Date: January 2021
Contact: "Daeho Jeong" <daehojeong@google.com>
@@ -498,12 +582,18 @@ Description: When ATGC is on, it controls age threshold to bypass GCing young
candidates whose age is not beyond the threshold, by default it was
initialized as 604800 seconds (equals to 7 days).
+What: /sys/fs/f2fs/<disk>/atgc_enabled
+Date: Feb 2024
+Contact: "Jinbao Liu" <liujinbao1@xiaomi.com>
+Description: It represents whether ATGC is on or off. The value is 1 which
+ indicates that ATGC is on, and 0 indicates that it is off.
+
What: /sys/fs/f2fs/<disk>/gc_reclaimed_segments
Date: July 2021
Contact: "Daeho Jeong" <daehojeong@google.com>
Description: Show how many segments have been reclaimed by GC during a specific
GC mode (0: GC normal, 1: GC idle CB, 2: GC idle greedy,
- 3: GC idle AT, 4: GC urgent high, 5: GC urgent low)
+ 3: GC idle AT, 4: GC urgent high, 5: GC urgent low 6: GC urgent mid)
You can re-initialize this value to "0".
What: /sys/fs/f2fs/<disk>/gc_segment_mode
@@ -534,9 +624,318 @@ Description: With "mode=fragment:block" mount options, we can scatter block allo
in the length of 1..<max_fragment_hole> by turns. This value can be set
between 1..512 and the default value is 4.
-What: /sys/fs/f2fs/<disk>/gc_urgent_high_remaining
-Date: December 2021
-Contact: "Daeho Jeong" <daehojeong@google.com>
-Description: You can set the trial count limit for GC urgent high mode with this value.
+What: /sys/fs/f2fs/<disk>/gc_remaining_trials
+Date: October 2022
+Contact: "Yangtao Li" <frank.li@vivo.com>
+Description: You can set the trial count limit for GC urgent and idle mode with this value.
If GC thread gets to the limit, the mode will turn back to GC normal mode.
By default, the value is zero, which means there is no limit like before.
+
+What: /sys/fs/f2fs/<disk>/max_roll_forward_node_blocks
+Date: January 2022
+Contact: "Jaegeuk Kim" <jaegeuk@kernel.org>
+Description: Controls max # of node block writes to be used for roll forward
+ recovery. This can limit the roll forward recovery time.
+
+What: /sys/fs/f2fs/<disk>/unusable_blocks_per_sec
+Date: June 2022
+Contact: "Jaegeuk Kim" <jaegeuk@kernel.org>
+Description: Shows the number of unusable blocks in a section which was defined by
+ the zone capacity reported by underlying zoned device.
+
+What: /sys/fs/f2fs/<disk>/max_open_zones
+Date: November 2025
+Contact: "Yongpeng Yang" <yangyongpeng@xiaomi.com>
+Description: Shows the max number of zones that F2FS can write concurrently when a zoned
+ device is mounted.
+
+What: /sys/fs/f2fs/<disk>/current_atomic_write
+Date: July 2022
+Contact: "Daeho Jeong" <daehojeong@google.com>
+Description: Show the total current atomic write block count, which is not committed yet.
+ This is a read-only entry.
+
+What: /sys/fs/f2fs/<disk>/peak_atomic_write
+Date: July 2022
+Contact: "Daeho Jeong" <daehojeong@google.com>
+Description: Show the peak value of total current atomic write block count after boot.
+ If you write "0" here, you can initialize to "0".
+
+What: /sys/fs/f2fs/<disk>/committed_atomic_block
+Date: July 2022
+Contact: "Daeho Jeong" <daehojeong@google.com>
+Description: Show the accumulated total committed atomic write block count after boot.
+ If you write "0" here, you can initialize to "0".
+
+What: /sys/fs/f2fs/<disk>/revoked_atomic_block
+Date: July 2022
+Contact: "Daeho Jeong" <daehojeong@google.com>
+Description: Show the accumulated total revoked atomic write block count after boot.
+ If you write "0" here, you can initialize to "0".
+
+What: /sys/fs/f2fs/<disk>/gc_mode
+Date: October 2022
+Contact: "Yangtao Li" <frank.li@vivo.com>
+Description: Show the current gc_mode as a string.
+ This is a read-only entry.
+
+What: /sys/fs/f2fs/<disk>/discard_urgent_util
+Date: November 2022
+Contact: "Yangtao Li" <frank.li@vivo.com>
+Description: When space utilization exceeds this, do background DISCARD aggressively.
+ Does DISCARD forcibly in a period of given min_discard_issue_time when the number
+ of discards is not 0 and set discard granularity to 1.
+ Default: 80
+
+What: /sys/fs/f2fs/<disk>/hot_data_age_threshold
+Date: November 2022
+Contact: "Ping Xiong" <xiongping1@xiaomi.com>
+Description: When DATA SEPARATION is on, it controls the age threshold to indicate
+ the data blocks as hot. By default it was initialized as 262144 blocks
+ (equals to 1GB).
+
+What: /sys/fs/f2fs/<disk>/warm_data_age_threshold
+Date: November 2022
+Contact: "Ping Xiong" <xiongping1@xiaomi.com>
+Description: When DATA SEPARATION is on, it controls the age threshold to indicate
+ the data blocks as warm. By default it was initialized as 2621440 blocks
+ (equals to 10GB).
+
+What: /sys/fs/f2fs/<disk>/fault_rate
+Date: May 2016
+Contact: "Sheng Yong" <shengyong@oppo.com>
+Contact: "Chao Yu" <chao@kernel.org>
+Description: Enable fault injection in all supported types with
+ specified injection rate.
+
+What: /sys/fs/f2fs/<disk>/fault_type
+Date: May 2016
+Contact: "Sheng Yong" <shengyong@oppo.com>
+Contact: "Chao Yu" <chao@kernel.org>
+Description: Support configuring fault injection type, should be
+ enabled with fault_injection option, fault type value
+ is shown below, it supports single or combined type.
+
+ =========================== ==========
+ Type_Name Type_Value
+ =========================== ==========
+ FAULT_KMALLOC 0x00000001
+ FAULT_KVMALLOC 0x00000002
+ FAULT_PAGE_ALLOC 0x00000004
+ FAULT_PAGE_GET 0x00000008
+ FAULT_ALLOC_BIO 0x00000010 (obsolete)
+ FAULT_ALLOC_NID 0x00000020
+ FAULT_ORPHAN 0x00000040
+ FAULT_BLOCK 0x00000080
+ FAULT_DIR_DEPTH 0x00000100
+ FAULT_EVICT_INODE 0x00000200
+ FAULT_TRUNCATE 0x00000400
+ FAULT_READ_IO 0x00000800
+ FAULT_CHECKPOINT 0x00001000
+ FAULT_DISCARD 0x00002000
+ FAULT_WRITE_IO 0x00004000
+ FAULT_SLAB_ALLOC 0x00008000
+ FAULT_DQUOT_INIT 0x00010000
+ FAULT_LOCK_OP 0x00020000
+ FAULT_BLKADDR_VALIDITY 0x00040000
+ FAULT_BLKADDR_CONSISTENCE 0x00080000
+ FAULT_NO_SEGMENT 0x00100000
+ FAULT_INCONSISTENT_FOOTER 0x00200000
+ FAULT_TIMEOUT 0x00400000 (1000ms)
+ FAULT_VMALLOC 0x00800000
+ =========================== ==========
+
+What: /sys/fs/f2fs/<disk>/discard_io_aware_gran
+Date: January 2023
+Contact: "Yangtao Li" <frank.li@vivo.com>
+Description: Controls background discard granularity of inner discard thread
+ when is not in idle. Inner thread will not issue discards with size that
+ is smaller than granularity. The unit size is one block(4KB), now only
+ support configuring in range of [0, 512].
+ Default: 512
+
+What: /sys/fs/f2fs/<disk>/last_age_weight
+Date: January 2023
+Contact: "Ping Xiong" <xiongping1@xiaomi.com>
+Description: When DATA SEPARATION is on, it controls the weight of last data block age.
+
+What: /sys/fs/f2fs/<disk>/compress_watermark
+Date: February 2023
+Contact: "Yangtao Li" <frank.li@vivo.com>
+Description: When compress cache is on, it controls free memory watermark
+ in order to limit caching compress page. If free memory is lower
+ than watermark, then deny caching compress page. The value should be in
+ range of (0, 100], by default it was initialized as 20(%).
+
+What: /sys/fs/f2fs/<disk>/compress_percent
+Date: February 2023
+Contact: "Yangtao Li" <frank.li@vivo.com>
+Description: When compress cache is on, it controls cached page
+ percent(compress pages / free_ram) in order to limit caching compress page.
+ If cached page percent exceed threshold, then deny caching compress page.
+ The value should be in range of (0, 100], by default it was initialized
+ as 20(%).
+
+What: /sys/fs/f2fs/<disk>/discard_io_aware
+Date: November 2023
+Contact: "Chao Yu" <chao@kernel.org>
+Description: It controls to enable/disable IO aware feature for background discard.
+ By default, the value is 1 which indicates IO aware is on.
+
+What: /sys/fs/f2fs/<disk>/blkzone_alloc_policy
+Date: July 2024
+Contact: "Yuanhong Liao" <liaoyuanhong@vivo.com>
+Description: The zone UFS we are currently using consists of two parts:
+ conventional zones and sequential zones. It can be used to control which part
+ to prioritize for writes, with a default value of 0.
+
+ ======================== =========================================
+ value description
+ blkzone_alloc_policy = 0 Prioritize writing to sequential zones
+ blkzone_alloc_policy = 1 Only allow writing to sequential zones
+ blkzone_alloc_policy = 2 Prioritize writing to conventional zones
+ ======================== =========================================
+
+What: /sys/fs/f2fs/<disk>/migration_window_granularity
+Date: September 2024
+Contact: "Daeho Jeong" <daehojeong@google.com>
+Description: Controls migration window granularity of garbage collection on large
+ section. it can control the scanning window granularity for GC migration
+ in a unit of segment, while migration_granularity controls the number
+ of segments which can be migrated at the same turn.
+
+What: /sys/fs/f2fs/<disk>/reserved_segments
+Date: September 2024
+Contact: "Daeho Jeong" <daehojeong@google.com>
+Description: In order to fine tune GC behavior, we can control the number of
+ reserved segments.
+
+What: /sys/fs/f2fs/<disk>/gc_no_zoned_gc_percent
+Date: September 2024
+Contact: "Daeho Jeong" <daehojeong@google.com>
+Description: If the percentage of free sections over total sections is above this
+ number, F2FS do not garbage collection for zoned devices through the
+ background GC thread. the default number is "60".
+
+What: /sys/fs/f2fs/<disk>/gc_boost_zoned_gc_percent
+Date: September 2024
+Contact: "Daeho Jeong" <daehojeong@google.com>
+Description: If the percentage of free sections over total sections is under this
+ number, F2FS boosts garbage collection for zoned devices through the
+ background GC thread. the default number is "25".
+
+What: /sys/fs/f2fs/<disk>/gc_valid_thresh_ratio
+Date: September 2024
+Contact: "Daeho Jeong" <daehojeong@google.com>
+Description: It controls the valid block ratio threshold not to trigger excessive GC
+ for zoned devices. The initial value of it is 95(%). F2FS will stop the
+ background GC thread from initiating GC for sections having valid blocks
+ exceeding the ratio.
+
+What: /sys/fs/f2fs/<disk>/max_read_extent_count
+Date: November 2024
+Contact: "Chao Yu" <chao@kernel.org>
+Description: It controls max read extent count for per-inode, the value of threshold
+ is 10240 by default.
+
+What: /sys/fs/f2fs/tuning/reclaim_caches_kb
+Date: February 2025
+Contact: "Jaegeuk Kim" <jaegeuk@kernel.org>
+Description: It reclaims the given KBs of file-backed pages registered by
+ ioctl(F2FS_IOC_DONATE_RANGE).
+ For example, writing N tries to drop N KBs spaces in LRU.
+
+What: /sys/fs/f2fs/<disk>/carve_out
+Date: March 2025
+Contact: "Daeho Jeong" <daehojeong@google.com>
+Description: For several zoned storage devices, vendors will provide extra space which
+ was used for device level GC than specs and F2FS can use this space for
+ filesystem level GC. To do that, we can reserve the space using
+ reserved_blocks. However, it is not enough, since this extra space should
+ not be shown to users. So, with this new sysfs node, we can hide the space
+ by subtracting reserved_blocks from total bytes.
+
+What: /sys/fs/f2fs/<disk>/encoding_flags
+Date: April 2025
+Contact: "Chao Yu" <chao@kernel.org>
+Description: This is a read-only entry to show the value of sb.s_encoding_flags, the
+ value is hexadecimal.
+
+ ============================ ==========
+ Flag_Name Flag_Value
+ ============================ ==========
+ SB_ENC_STRICT_MODE_FL 0x00000001
+ SB_ENC_NO_COMPAT_FALLBACK_FL 0x00000002
+ ============================ ==========
+
+What: /sys/fs/f2fs/<disk>/reserved_pin_section
+Date: June 2025
+Contact: "Chao Yu" <chao@kernel.org>
+Description: This threshold is used to control triggering garbage collection while
+ fallocating on pinned file, so, it can guarantee there is enough free
+ reserved section before preallocating on pinned file.
+ By default, the value is ovp_sections, especially, for zoned ufs, the
+ value is 1.
+
+What: /sys/fs/f2fs/<disk>/gc_boost_gc_multiple
+Date: June 2025
+Contact: "Daeho Jeong" <daehojeong@google.com>
+Description: Set a multiplier for the background GC migration window when F2FS GC is
+ boosted. The range should be from 1 to the segment count in a section.
+ Default: 5
+
+What: /sys/fs/f2fs/<disk>/gc_boost_gc_greedy
+Date: June 2025
+Contact: "Daeho Jeong" <daehojeong@google.com>
+Description: Control GC algorithm for boost GC. 0: cost benefit, 1: greedy
+ Default: 1
+
+What: /sys/fs/f2fs/<disk>/effective_lookup_mode
+Date: August 2025
+Contact: "Daniel Lee" <chullee@google.com>
+Description:
+ This is a read-only entry to show the effective directory lookup mode
+ F2FS is currently using for casefolded directories.
+ This considers both the "lookup_mode" mount option and the on-disk
+ encoding flag, SB_ENC_NO_COMPAT_FALLBACK_FL.
+
+ Possible values are:
+ - "perf": Hash-only lookup.
+ - "compat": Hash-based lookup with a linear search fallback enabled
+ - "auto:perf": lookup_mode is auto and fallback is disabled on-disk
+ - "auto:compat": lookup_mode is auto and fallback is enabled on-disk
+
+What: /sys/fs/f2fs/<disk>/bggc_io_aware
+Date: August 2025
+Contact: "Liao Yuanhong" <liaoyuanhong@vivo.com>
+Description: Used to adjust the BG_GC priority when pending IO, with a default value
+ of 0. Specifically, for ZUFS, the default value is 1.
+
+ ================== ======================================================
+ value description
+ bggc_io_aware = 0 skip background GC if there is any kind of pending IO
+ bggc_io_aware = 1 skip background GC if there is pending read IO
+ bggc_io_aware = 2 don't aware IO for background GC
+ ================== ======================================================
+
+What: /sys/fs/f2fs/<disk>/allocate_section_hint
+Date: August 2025
+Contact: "Liao Yuanhong" <liaoyuanhong@vivo.com>
+Description: Indicates the hint section between the first device and others in multi-devices
+ setup. It defaults to the end of the first device in sections. For a single storage
+ device, it defaults to the total number of sections. It can be manually set to match
+ scenarios where multi-devices are mapped to the same dm device.
+
+What: /sys/fs/f2fs/<disk>/allocate_section_policy
+Date: August 2025
+Contact: "Liao Yuanhong" <liaoyuanhong@vivo.com>
+Description: Controls write priority in multi-devices setups. A value of 0 means normal writing.
+ A value of 1 prioritizes writing to devices before the allocate_section_hint. A value of 2
+ prioritizes writing to devices after the allocate_section_hint. The default is 0.
+
+ =========================== ==========================================================
+ value description
+ allocate_section_policy = 0 Normal writing
+ allocate_section_policy = 1 Prioritize writing to section before allocate_section_hint
+ allocate_section_policy = 2 Prioritize writing to section after allocate_section_hint
+ =========================== ==========================================================
diff --git a/Documentation/ABI/testing/sysfs-fs-virtiofs b/Documentation/ABI/testing/sysfs-fs-virtiofs
new file mode 100644
index 000000000000..4839dbce997e
--- /dev/null
+++ b/Documentation/ABI/testing/sysfs-fs-virtiofs
@@ -0,0 +1,11 @@
+What: /sys/fs/virtiofs/<n>/tag
+Date: Feb 2024
+Contact: virtio-fs@lists.linux.dev
+Description:
+ [RO] The mount "tag" that can be used to mount this filesystem.
+
+What: /sys/fs/virtiofs/<n>/device
+Date: Feb 2024
+Contact: virtio-fs@lists.linux.dev
+Description:
+ Symlink to the virtio device that exports this filesystem.
diff --git a/Documentation/ABI/testing/sysfs-fs-xfs b/Documentation/ABI/testing/sysfs-fs-xfs
index f704925f6fe9..7da4de948b46 100644
--- a/Documentation/ABI/testing/sysfs-fs-xfs
+++ b/Documentation/ABI/testing/sysfs-fs-xfs
@@ -1,7 +1,7 @@
What: /sys/fs/xfs/<disk>/log/log_head_lsn
Date: July 2014
KernelVersion: 3.17
-Contact: xfs@oss.sgi.com
+Contact: linux-xfs@vger.kernel.org
Description:
The log sequence number (LSN) of the current head of the
log. The LSN is exported in "cycle:basic block" format.
@@ -10,30 +10,28 @@ Users: xfstests
What: /sys/fs/xfs/<disk>/log/log_tail_lsn
Date: July 2014
KernelVersion: 3.17
-Contact: xfs@oss.sgi.com
+Contact: linux-xfs@vger.kernel.org
Description:
The log sequence number (LSN) of the current tail of the
log. The LSN is exported in "cycle:basic block" format.
-What: /sys/fs/xfs/<disk>/log/reserve_grant_head
-Date: July 2014
-KernelVersion: 3.17
-Contact: xfs@oss.sgi.com
+What: /sys/fs/xfs/<disk>/log/reserve_grant_head_bytes
+Date: June 2024
+KernelVersion: 6.11
+Contact: linux-xfs@vger.kernel.org
Description:
The current state of the log reserve grant head. It
represents the total log reservation of all currently
- outstanding transactions. The grant head is exported in
- "cycle:bytes" format.
+ outstanding transactions in bytes.
Users: xfstests
-What: /sys/fs/xfs/<disk>/log/write_grant_head
-Date: July 2014
-KernelVersion: 3.17
-Contact: xfs@oss.sgi.com
+What: /sys/fs/xfs/<disk>/log/write_grant_head_bytes
+Date: June 2024
+KernelVersion: 6.11
+Contact: linux-xfs@vger.kernel.org
Description:
The current state of the log write grant head. It
represents the total log reservation of all currently
outstanding transactions, including regrants due to
- rolling transactions. The grant head is exported in
- "cycle:bytes" format.
+ rolling transactions in bytes.
Users: xfstests
diff --git a/Documentation/ABI/testing/sysfs-kernel-address_bits b/Documentation/ABI/testing/sysfs-kernel-address_bits
new file mode 100644
index 000000000000..3b72e48086aa
--- /dev/null
+++ b/Documentation/ABI/testing/sysfs-kernel-address_bits
@@ -0,0 +1,10 @@
+What: /sys/kernel/address_bits
+Date: May 2023
+KernelVersion: 6.3
+Contact: Thomas Weißschuh <linux@weissschuh.net>
+Description:
+ The address size of the running kernel in bits.
+
+ Access: Read
+
+Users: util-linux
diff --git a/Documentation/ABI/testing/sysfs-kernel-cpu_byteorder b/Documentation/ABI/testing/sysfs-kernel-cpu_byteorder
new file mode 100644
index 000000000000..f0e6ac1b5356
--- /dev/null
+++ b/Documentation/ABI/testing/sysfs-kernel-cpu_byteorder
@@ -0,0 +1,12 @@
+What: /sys/kernel/cpu_byteorder
+Date: February 2023
+KernelVersion: 6.2
+Contact: Thomas Weißschuh <linux@weissschuh.net>
+Description:
+ The endianness of the running kernel.
+
+ Access: Read
+
+ Valid values:
+ "little", "big"
+Users: util-linux
diff --git a/Documentation/ABI/testing/sysfs-kernel-fadump b/Documentation/ABI/testing/sysfs-kernel-fadump
index 8f7a64a81783..b64b7622e6fc 100644
--- a/Documentation/ABI/testing/sysfs-kernel-fadump
+++ b/Documentation/ABI/testing/sysfs-kernel-fadump
@@ -38,3 +38,22 @@ Contact: linuxppc-dev@lists.ozlabs.org
Description: read only
Provide information about the amount of memory reserved by
FADump to save the crash dump in bytes.
+
+What: /sys/kernel/fadump/hotplug_ready
+Date: Apr 2024
+Contact: linuxppc-dev@lists.ozlabs.org
+Description: read only
+ Kdump udev rule re-registers fadump on memory add/remove events,
+ primarily to update the elfcorehdr. This sysfs indicates the
+ kdump udev rule that fadump re-registration is not required on
+ memory add/remove events because elfcorehdr is now prepared in
+ the second/fadump kernel.
+User: kexec-tools
+
+What: /sys/kernel/fadump/bootargs_append
+Date: May 2024
+Contact: linuxppc-dev@lists.ozlabs.org
+Description: read/write
+ This is a special sysfs file available to setup additional
+ parameters to be passed to capture kernel. For HASH MMU it
+ is exported only if RMA size higher than 768MB.
diff --git a/Documentation/ABI/testing/sysfs-kernel-hardlockup_count b/Documentation/ABI/testing/sysfs-kernel-hardlockup_count
new file mode 100644
index 000000000000..dfdd4078b077
--- /dev/null
+++ b/Documentation/ABI/testing/sysfs-kernel-hardlockup_count
@@ -0,0 +1,7 @@
+What: /sys/kernel/hardlockup_count
+Date: May 2025
+KernelVersion: 6.16
+Contact: Linux kernel mailing list <linux-kernel@vger.kernel.org>
+Description:
+ Shows how many times the system has detected a hard lockup since last boot.
+ Available only if CONFIG_HARDLOCKUP_DETECTOR is enabled.
diff --git a/Documentation/ABI/testing/sysfs-kernel-iommu_groups b/Documentation/ABI/testing/sysfs-kernel-iommu_groups
index b15af6a5bc08..a42d4383d999 100644
--- a/Documentation/ABI/testing/sysfs-kernel-iommu_groups
+++ b/Documentation/ABI/testing/sysfs-kernel-iommu_groups
@@ -53,7 +53,6 @@ Description: /sys/kernel/iommu_groups/<grp_id>/type shows the type of default
The default domain type of a group may be modified only when
- - The group has only one device.
- The device in the group is not bound to any device driver.
So, the users must unbind the appropriate driver before
changing the default domain type.
diff --git a/Documentation/ABI/testing/sysfs-kernel-kexec-kdump b/Documentation/ABI/testing/sysfs-kernel-kexec-kdump
new file mode 100644
index 000000000000..f59051b5d96d
--- /dev/null
+++ b/Documentation/ABI/testing/sysfs-kernel-kexec-kdump
@@ -0,0 +1,61 @@
+What: /sys/kernel/kexec/*
+Date: Nov 2025
+Contact: kexec@lists.infradead.org
+Description:
+ The /sys/kernel/kexec/* directory contains sysfs files
+ that provide information about the configuration status
+ of kexec and kdump.
+
+What: /sys/kernel/kexec/loaded
+Date: Nov 2025
+Contact: kexec@lists.infradead.org
+Description: read only
+ Indicates whether a new kernel image has been loaded
+ into memory using the kexec system call. It shows 1 if
+ a kexec image is present and ready to boot, or 0 if none
+ is loaded.
+User: kexec tools, kdump service
+
+What: /sys/kernel/kexec/crash_loaded
+Date: Nov 2025
+Contact: kexec@lists.infradead.org
+Description: read only
+ Indicates whether a crash (kdump) kernel is currently
+ loaded into memory. It shows 1 if a crash kernel has been
+ successfully loaded for panic handling, or 0 if no crash
+ kernel is present.
+User: Kexec tools, Kdump service
+
+What: /sys/kernel/kexec/crash_size
+Date: Nov 2025
+Contact: kexec@lists.infradead.org
+Description: read/write
+ Shows the amount of memory reserved for loading the crash
+ (kdump) kernel. It reports the size, in bytes, of the
+ crash kernel area defined by the crashkernel= parameter.
+ This interface also allows reducing the crashkernel
+ reservation by writing a smaller value, and the reclaimed
+ space is added back to the system RAM.
+User: Kdump service
+
+What: /sys/kernel/kexec/crash_elfcorehdr_size
+Date: Nov 2025
+Contact: kexec@lists.infradead.org
+Description: read only
+ Indicates the preferred size of the memory buffer for the
+ ELF core header used by the crash (kdump) kernel. It defines
+ how much space is needed to hold metadata about the crashed
+ system, including CPU and memory information. This information
+ is used by the user space utility kexec to support updating the
+ in-kernel kdump image during hotplug operations.
+User: Kexec tools
+
+What: /sys/kernel/kexec/crash_cma_ranges
+Date: Nov 2025
+Contact: kexec@lists.infradead.org
+Description: read only
+ Provides information about the memory ranges reserved from
+ the Contiguous Memory Allocator (CMA) area that are allocated
+ to the crash (kdump) kernel. It lists the start and end physical
+ addresses of CMA regions assigned for crashkernel use.
+User: kdump service
diff --git a/Documentation/ABI/testing/sysfs-kernel-livepatch b/Documentation/ABI/testing/sysfs-kernel-livepatch
index bea7bd5a1d5f..3c3f36b32b57 100644
--- a/Documentation/ABI/testing/sysfs-kernel-livepatch
+++ b/Documentation/ABI/testing/sysfs-kernel-livepatch
@@ -47,6 +47,23 @@ Description:
disabled when the feature is used. See
Documentation/livepatch/livepatch.rst for more information.
+What: /sys/kernel/livepatch/<patch>/replace
+Date: Jun 2024
+KernelVersion: 6.11.0
+Contact: live-patching@vger.kernel.org
+Description:
+ An attribute which indicates whether the patch supports
+ atomic-replace.
+
+What: /sys/kernel/livepatch/<patch>/stack_order
+Date: Jan 2025
+KernelVersion: 6.14.0
+Description:
+ This attribute specifies the sequence in which live patch modules
+ are applied to the system. If multiple live patches modify the same
+ function, the implementation with the biggest 'stack_order' number
+ is used, unless a transition is currently in progress.
+
What: /sys/kernel/livepatch/<patch>/<object>
Date: Nov 2014
KernelVersion: 3.19.0
@@ -55,6 +72,14 @@ Description:
The object directory contains subdirectories for each function
that is patched within the object.
+What: /sys/kernel/livepatch/<patch>/<object>/patched
+Date: August 2022
+KernelVersion: 6.1.0
+Contact: live-patching@vger.kernel.org
+Description:
+ An attribute which indicates whether the object is currently
+ patched.
+
What: /sys/kernel/livepatch/<patch>/<object>/<function,sympos>
Date: Nov 2014
KernelVersion: 3.19.0
diff --git a/Documentation/ABI/testing/sysfs-kernel-mm-cma b/Documentation/ABI/testing/sysfs-kernel-mm-cma
index 02b2bb60c296..aaf2a5d8b13b 100644
--- a/Documentation/ABI/testing/sysfs-kernel-mm-cma
+++ b/Documentation/ABI/testing/sysfs-kernel-mm-cma
@@ -23,3 +23,22 @@ Date: Feb 2021
Contact: Minchan Kim <minchan@kernel.org>
Description:
the number of pages CMA API failed to allocate
+
+What: /sys/kernel/mm/cma/<cma-heap-name>/release_pages_success
+Date: Feb 2024
+Contact: Anshuman Khandual <anshuman.khandual@arm.com>
+Description:
+ the number of pages CMA API succeeded to release
+
+What: /sys/kernel/mm/cma/<cma-heap-name>/total_pages
+Date: Jun 2024
+Contact: Frank van der Linden <fvdl@google.com>
+Description:
+ The size of the CMA area in pages.
+
+What: /sys/kernel/mm/cma/<cma-heap-name>/available_pages
+Date: Jun 2024
+Contact: Frank van der Linden <fvdl@google.com>
+Description:
+ The number of pages in the CMA area that are still
+ available for CMA allocation.
diff --git a/Documentation/ABI/testing/sysfs-kernel-mm-damon b/Documentation/ABI/testing/sysfs-kernel-mm-damon
new file mode 100644
index 000000000000..4fb8b7a6d625
--- /dev/null
+++ b/Documentation/ABI/testing/sysfs-kernel-mm-damon
@@ -0,0 +1,559 @@
+what: /sys/kernel/mm/damon/
+Date: Mar 2022
+Contact: SeongJae Park <sj@kernel.org>
+Description: Interface for Data Access MONitoring (DAMON). Contains files
+ for controlling DAMON. For more details on DAMON itself,
+ please refer to Documentation/admin-guide/mm/damon/index.rst.
+
+What: /sys/kernel/mm/damon/admin/
+Date: Mar 2022
+Contact: SeongJae Park <sj@kernel.org>
+Description: Interface for privileged users of DAMON. Contains files for
+ controlling DAMON that aimed to be used by privileged users.
+
+What: /sys/kernel/mm/damon/admin/kdamonds/nr_kdamonds
+Date: Mar 2022
+Contact: SeongJae Park <sj@kernel.org>
+Description: Writing a number 'N' to this file creates the number of
+ directories for controlling each DAMON worker thread (kdamond)
+ named '0' to 'N-1' under the kdamonds/ directory.
+
+What: /sys/kernel/mm/damon/admin/kdamonds/<K>/state
+Date: Mar 2022
+Contact: SeongJae Park <sj@kernel.org>
+Description: Writing 'on' or 'off' to this file makes the kdamond starts or
+ stops, respectively. Reading the file returns the keywords
+ based on the current status. Writing 'commit' to this file
+ makes the kdamond reads the user inputs in the sysfs files
+ except 'state' again. Writing 'commit_schemes_quota_goals' to
+ this file makes the kdamond reads the quota goal files again.
+ Writing 'update_schemes_stats' to the file updates contents of
+ schemes stats files of the kdamond. Writing
+ 'update_schemes_tried_regions' to the file updates contents of
+ 'tried_regions' directory of every scheme directory of this
+ kdamond. Writing 'update_schemes_tried_bytes' to the file
+ updates only '.../tried_regions/total_bytes' files of this
+ kdamond. Writing 'clear_schemes_tried_regions' to the file
+ removes contents of the 'tried_regions' directory. Writing
+ 'update_schemes_effective_quotas' to the file updates
+ '.../quotas/effective_bytes' files of this kdamond.
+
+What: /sys/kernel/mm/damon/admin/kdamonds/<K>/pid
+Date: Mar 2022
+Contact: SeongJae Park <sj@kernel.org>
+Description: Reading this file returns the pid of the kdamond if it is
+ running.
+
+What: /sys/kernel/mm/damon/admin/kdamonds/<K>/refresh_ms
+Date: Jul 2025
+Contact: SeongJae Park <sj@kernel.org>
+Description: Writing a value to this file sets the time interval for
+ automatic DAMON status file contents update. Writing '0'
+ disables the update. Reading this file returns the value.
+
+What: /sys/kernel/mm/damon/admin/kdamonds/<K>/contexts/nr_contexts
+Date: Mar 2022
+Contact: SeongJae Park <sj@kernel.org>
+Description: Writing a number 'N' to this file creates the number of
+ directories for controlling each DAMON context named '0' to
+ 'N-1' under the contexts/ directory.
+
+What: /sys/kernel/mm/damon/admin/kdamonds/<K>/contexts/<C>/avail_operations
+Date: Apr 2022
+Contact: SeongJae Park <sj@kernel.org>
+Description: Reading this file returns the available monitoring operations
+ sets on the currently running kernel.
+
+What: /sys/kernel/mm/damon/admin/kdamonds/<K>/contexts/<C>/operations
+Date: Mar 2022
+Contact: SeongJae Park <sj@kernel.org>
+Description: Writing a keyword for a monitoring operations set ('vaddr' for
+ virtual address spaces monitoring, 'fvaddr' for fixed virtual
+ address ranges monitoring, and 'paddr' for the physical address
+ space monitoring) to this file makes the context to use the
+ operations set. Reading the file returns the keyword for the
+ operations set the context is set to use.
+
+ Note that only the operations sets that listed in
+ 'avail_operations' file are valid inputs.
+
+What: /sys/kernel/mm/damon/admin/kdamonds/<K>/contexts/<C>/addr_unit
+Date: Aug 2025
+Contact: SeongJae Park <sj@kernel.org>
+Description: Writing an integer to this file sets the 'address unit'
+ parameter of the given operations set of the context. Reading
+ the file returns the last-written 'address unit' value.
+
+What: /sys/kernel/mm/damon/admin/kdamonds/<K>/contexts/<C>/monitoring_attrs/intervals/sample_us
+Date: Mar 2022
+Contact: SeongJae Park <sj@kernel.org>
+Description: Writing a value to this file sets the sampling interval of the
+ DAMON context in microseconds as the value. Reading this file
+ returns the value.
+
+What: /sys/kernel/mm/damon/admin/kdamonds/<K>/contexts/<C>/monitoring_attrs/intervals/aggr_us
+Date: Mar 2022
+Contact: SeongJae Park <sj@kernel.org>
+Description: Writing a value to this file sets the aggregation interval of
+ the DAMON context in microseconds as the value. Reading this
+ file returns the value.
+
+What: /sys/kernel/mm/damon/admin/kdamonds/<K>/contexts/<C>/monitoring_attrs/intervals/update_us
+Date: Mar 2022
+Contact: SeongJae Park <sj@kernel.org>
+Description: Writing a value to this file sets the update interval of the
+ DAMON context in microseconds as the value. Reading this file
+ returns the value.
+
+What: /sys/kernel/mm/damon/admin/kdamonds/<K>/contexts/<C>/monitoring_attrs/intervals/intrvals_goal/access_bp
+Date: Feb 2025
+Contact: SeongJae Park <sj@kernel.org>
+Description: Writing a value to this file sets the monitoring intervals
+ auto-tuning target DAMON-observed access events ratio within
+ the given time interval (aggrs in same directory), in bp
+ (1/10,000). Reading this file returns the value.
+
+What: /sys/kernel/mm/damon/admin/kdamonds/<K>/contexts/<C>/monitoring_attrs/intervals/intrvals_goal/aggrs
+Date: Feb 2025
+Contact: SeongJae Park <sj@kernel.org>
+Description: Writing a value to this file sets the time interval to achieve
+ the monitoring intervals auto-tuning target DAMON-observed
+ access events ratio (access_bp in same directory) within.
+ Reading this file returns the value.
+
+What: /sys/kernel/mm/damon/admin/kdamonds/<K>/contexts/<C>/monitoring_attrs/intervals/intrvals_goal/min_sample_us
+Date: Feb 2025
+Contact: SeongJae Park <sj@kernel.org>
+Description: Writing a value to this file sets the minimum value of
+ auto-tuned sampling interval in microseconds. Reading this
+ file returns the value.
+
+What: /sys/kernel/mm/damon/admin/kdamonds/<K>/contexts/<C>/monitoring_attrs/intervals/intrvals_goal/max_sample_us
+Date: Feb 2025
+Contact: SeongJae Park <sj@kernel.org>
+Description: Writing a value to this file sets the maximum value of
+ auto-tuned sampling interval in microseconds. Reading this
+ file returns the value.
+
+What: /sys/kernel/mm/damon/admin/kdamonds/<K>/contexts/<C>/monitoring_attrs/nr_regions/min
+
+WDate: Mar 2022
+Contact: SeongJae Park <sj@kernel.org>
+Description: Writing a value to this file sets the minimum number of
+ monitoring regions of the DAMON context as the value. Reading
+ this file returns the value.
+
+What: /sys/kernel/mm/damon/admin/kdamonds/<K>/contexts/<C>/monitoring_attrs/nr_regions/max
+Date: Mar 2022
+Contact: SeongJae Park <sj@kernel.org>
+Description: Writing a value to this file sets the maximum number of
+ monitoring regions of the DAMON context as the value. Reading
+ this file returns the value.
+
+What: /sys/kernel/mm/damon/admin/kdamonds/<K>/contexts/<C>/targets/nr_targets
+Date: Mar 2022
+Contact: SeongJae Park <sj@kernel.org>
+Description: Writing a number 'N' to this file creates the number of
+ directories for controlling each DAMON target of the context
+ named '0' to 'N-1' under the contexts/ directory.
+
+What: /sys/kernel/mm/damon/admin/kdamonds/<K>/contexts/<C>/targets/<T>/pid_target
+Date: Mar 2022
+Contact: SeongJae Park <sj@kernel.org>
+Description: Writing to and reading from this file sets and gets the pid of
+ the target process if the context is for virtual address spaces
+ monitoring, respectively.
+
+What: /sys/kernel/mm/damon/admin/kdamonds/<K>/contexts/<C>/targets/<T>/obsolete_target
+Date: Oct 2025
+Contact: SeongJae Park <sj@kernel.org>
+Description: Writing to and reading from this file sets and gets the
+ obsoleteness of the matching parameters commit destination
+ target.
+
+What: /sys/kernel/mm/damon/admin/kdamonds/<K>/contexts/<C>/targets/<T>/regions/nr_regions
+Date: Mar 2022
+Contact: SeongJae Park <sj@kernel.org>
+Description: Writing a number 'N' to this file creates the number of
+ directories for setting each DAMON target memory region of the
+ context named '0' to 'N-1' under the regions/ directory. In
+ case of the virtual address space monitoring, DAMON
+ automatically sets the target memory region based on the target
+ processes' mappings.
+
+What: /sys/kernel/mm/damon/admin/kdamonds/<K>/contexts/<C>/targets/<T>/regions/<R>/start
+Date: Mar 2022
+Contact: SeongJae Park <sj@kernel.org>
+Description: Writing to and reading from this file sets and gets the start
+ address of the monitoring region.
+
+What: /sys/kernel/mm/damon/admin/kdamonds/<K>/contexts/<C>/targets/<T>/regions/<R>/end
+Date: Mar 2022
+Contact: SeongJae Park <sj@kernel.org>
+Description: Writing to and reading from this file sets and gets the end
+ address of the monitoring region.
+
+What: /sys/kernel/mm/damon/admin/kdamonds/<K>/contexts/<C>/schemes/nr_schemes
+Date: Mar 2022
+Contact: SeongJae Park <sj@kernel.org>
+Description: Writing a number 'N' to this file creates the number of
+ directories for controlling each DAMON-based operation scheme
+ of the context named '0' to 'N-1' under the schemes/ directory.
+
+What: /sys/kernel/mm/damon/admin/kdamonds/<K>/contexts/<C>/schemes/<S>/action
+Date: Mar 2022
+Contact: SeongJae Park <sj@kernel.org>
+Description: Writing to and reading from this file sets and gets the action
+ of the scheme.
+
+What: /sys/kernel/mm/damon/admin/kdamonds/<K>/contexts/<C>/schemes/<S>/target_nid
+Date: Jun 2024
+Contact: SeongJae Park <sj@kernel.org>
+Description: Action's target NUMA node id. Supported by only relevant
+ actions.
+
+What: /sys/kernel/mm/damon/admin/kdamonds/<K>/contexts/<C>/schemes/<S>/apply_interval_us
+Date: Sep 2023
+Contact: SeongJae Park <sj@kernel.org>
+Description: Writing a value to this file sets the action apply interval of
+ the scheme in microseconds. Reading this file returns the
+ value.
+
+What: /sys/kernel/mm/damon/admin/kdamonds/<K>/contexts/<C>/schemes/<S>/access_pattern/sz/min
+Date: Mar 2022
+Contact: SeongJae Park <sj@kernel.org>
+Description: Writing to and reading from this file sets and gets the minimum
+ size of the scheme's target regions in bytes.
+
+What: /sys/kernel/mm/damon/admin/kdamonds/<K>/contexts/<C>/schemes/<S>/access_pattern/sz/max
+Date: Mar 2022
+Contact: SeongJae Park <sj@kernel.org>
+Description: Writing to and reading from this file sets and gets the maximum
+ size of the scheme's target regions in bytes.
+
+What: /sys/kernel/mm/damon/admin/kdamonds/<K>/contexts/<C>/schemes/<S>/access_pattern/nr_accesses/min
+Date: Mar 2022
+Contact: SeongJae Park <sj@kernel.org>
+Description: Writing to and reading from this file sets and gets the manimum
+ 'nr_accesses' of the scheme's target regions.
+
+What: /sys/kernel/mm/damon/admin/kdamonds/<K>/contexts/<C>/schemes/<S>/access_pattern/nr_accesses/max
+Date: Mar 2022
+Contact: SeongJae Park <sj@kernel.org>
+Description: Writing to and reading from this file sets and gets the maximum
+ 'nr_accesses' of the scheme's target regions.
+
+What: /sys/kernel/mm/damon/admin/kdamonds/<K>/contexts/<C>/schemes/<S>/access_pattern/age/min
+Date: Mar 2022
+Contact: SeongJae Park <sj@kernel.org>
+Description: Writing to and reading from this file sets and gets the minimum
+ 'age' of the scheme's target regions.
+
+What: /sys/kernel/mm/damon/admin/kdamonds/<K>/contexts/<C>/schemes/<S>/access_pattern/age/max
+Date: Mar 2022
+Contact: SeongJae Park <sj@kernel.org>
+Description: Writing to and reading from this file sets and gets the maximum
+ 'age' of the scheme's target regions.
+
+What: /sys/kernel/mm/damon/admin/kdamonds/<K>/contexts/<C>/schemes/<S>/quotas/ms
+Date: Mar 2022
+Contact: SeongJae Park <sj@kernel.org>
+Description: Writing to and reading from this file sets and gets the time
+ quota of the scheme in milliseconds.
+
+What: /sys/kernel/mm/damon/admin/kdamonds/<K>/contexts/<C>/schemes/<S>/quotas/bytes
+Date: Mar 2022
+Contact: SeongJae Park <sj@kernel.org>
+Description: Writing to and reading from this file sets and gets the size
+ quota of the scheme in bytes.
+
+What: /sys/kernel/mm/damon/admin/kdamonds/<K>/contexts/<C>/schemes/<S>/quotas/effective_bytes
+Date: Feb 2024
+Contact: SeongJae Park <sj@kernel.org>
+Description: Reading from this file gets the effective size quota of the
+ scheme in bytes, which adjusted for the time quota and goals.
+
+What: /sys/kernel/mm/damon/admin/kdamonds/<K>/contexts/<C>/schemes/<S>/quotas/reset_interval_ms
+Date: Mar 2022
+Contact: SeongJae Park <sj@kernel.org>
+Description: Writing to and reading from this file sets and gets the quotas
+ charge reset interval of the scheme in milliseconds.
+
+What: /sys/kernel/mm/damon/admin/kdamonds/<K>/contexts/<C>/schemes/<S>/quotas/goals/nr_goals
+Date: Nov 2023
+Contact: SeongJae Park <sj@kernel.org>
+Description: Writing a number 'N' to this file creates the number of
+ directories for setting automatic tuning of the scheme's
+ aggressiveness named '0' to 'N-1' under the goals/ directory.
+
+What: /sys/kernel/mm/damon/admin/kdamonds/<K>/contexts/<C>/schemes/<S>/quotas/goals/<G>/target_metric
+Date: Feb 2024
+Contact: SeongJae Park <sj@kernel.org>
+Description: Writing to and reading from this file sets and gets the quota
+ auto-tuning goal metric.
+
+What: /sys/kernel/mm/damon/admin/kdamonds/<K>/contexts/<C>/schemes/<S>/quotas/goals/<G>/target_value
+Date: Nov 2023
+Contact: SeongJae Park <sj@kernel.org>
+Description: Writing to and reading from this file sets and gets the target
+ value of the goal metric.
+
+What: /sys/kernel/mm/damon/admin/kdamonds/<K>/contexts/<C>/schemes/<S>/quotas/goals/<G>/current_value
+Date: Nov 2023
+Contact: SeongJae Park <sj@kernel.org>
+Description: Writing to and reading from this file sets and gets the current
+ value of the goal metric.
+
+What: /sys/kernel/mm/damon/admin/kdamonds/<K>/contexts/<C>/schemes/<S>/quotas/goals/<G>/nid
+Date: Apr 2025
+Contact: SeongJae Park <sj@kernel.org>
+Description: Writing to and reading from this file sets and gets the nid
+ parameter of the goal.
+
+What: /sys/kernel/mm/damon/admin/kdamonds/<K>/contexts/<C>/schemes/<S>/quotas/goals/<G>/path
+Date: Oct 2025
+Contact: SeongJae Park <sj@kernel.org>
+Description: Writing to and reading from this file sets and gets the path
+ parameter of the goal.
+
+What: /sys/kernel/mm/damon/admin/kdamonds/<K>/contexts/<C>/schemes/<S>/quotas/weights/sz_permil
+Date: Mar 2022
+Contact: SeongJae Park <sj@kernel.org>
+Description: Writing to and reading from this file sets and gets the
+ under-quota limit regions prioritization weight for 'size' in
+ permil.
+
+What: /sys/kernel/mm/damon/admin/kdamonds/<K>/contexts/<C>/schemes/<S>/quotas/weights/nr_accesses_permil
+Date: Mar 2022
+Contact: SeongJae Park <sj@kernel.org>
+Description: Writing to and reading from this file sets and gets the
+ under-quota limit regions prioritization weight for
+ 'nr_accesses' in permil.
+
+What: /sys/kernel/mm/damon/admin/kdamonds/<K>/contexts/<C>/schemes/<S>/quotas/weights/age_permil
+Date: Mar 2022
+Contact: SeongJae Park <sj@kernel.org>
+Description: Writing to and reading from this file sets and gets the
+ under-quota limit regions prioritization weight for 'age' in
+ permil.
+
+What: /sys/kernel/mm/damon/admin/kdamonds/<K>/contexts/<C>/schemes/<S>/watermarks/metric
+Date: Mar 2022
+Contact: SeongJae Park <sj@kernel.org>
+Description: Writing to and reading from this file sets and gets the metric
+ of the watermarks for the scheme. The writable/readable
+ keywords for this file are 'none' for disabling the watermarks
+ feature, or 'free_mem_rate' for the system's global free memory
+ rate in permil.
+
+What: /sys/kernel/mm/damon/admin/kdamonds/<K>/contexts/<C>/schemes/<S>/watermarks/interval_us
+Date: Mar 2022
+Contact: SeongJae Park <sj@kernel.org>
+Description: Writing to and reading from this file sets and gets the metric
+ check interval of the watermarks for the scheme in
+ microseconds.
+
+What: /sys/kernel/mm/damon/admin/kdamonds/<K>/contexts/<C>/schemes/<S>/watermarks/high
+Date: Mar 2022
+Contact: SeongJae Park <sj@kernel.org>
+Description: Writing to and reading from this file sets and gets the high
+ watermark of the scheme in permil.
+
+What: /sys/kernel/mm/damon/admin/kdamonds/<K>/contexts/<C>/schemes/<S>/watermarks/mid
+Date: Mar 2022
+Contact: SeongJae Park <sj@kernel.org>
+Description: Writing to and reading from this file sets and gets the mid
+ watermark of the scheme in permil.
+
+What: /sys/kernel/mm/damon/admin/kdamonds/<K>/contexts/<C>/schemes/<S>/watermarks/low
+Date: Mar 2022
+Contact: SeongJae Park <sj@kernel.org>
+Description: Writing to and reading from this file sets and gets the low
+ watermark of the scheme in permil.
+
+What: /sys/kernel/mm/damon/admin/kdamonds/<K>/contexts/<C>/schemes/<S>/filters/nr_filters
+Date: Dec 2022
+Contact: SeongJae Park <sj@kernel.org>
+Description: Writing a number 'N' to this file creates the number of
+ directories for setting filters of the scheme named '0' to
+ 'N-1' under the filters/ directory.
+
+What: /sys/kernel/mm/damon/admin/kdamonds/<K>/contexts/<C>/schemes/<S>/filters/<F>/type
+Date: Dec 2022
+Contact: SeongJae Park <sj@kernel.org>
+Description: Writing to and reading from this file sets and gets the type of
+ the memory of the interest. 'anon' for anonymous pages,
+ 'memcg' for specific memory cgroup, 'young' for young pages,
+ 'addr' for address range (an open-ended interval), or 'target'
+ for DAMON monitoring target can be written and read.
+
+What: /sys/kernel/mm/damon/admin/kdamonds/<K>/contexts/<C>/schemes/<S>/filters/<F>/memcg_path
+Date: Dec 2022
+Contact: SeongJae Park <sj@kernel.org>
+Description: If 'memcg' is written to the 'type' file, writing to and
+ reading from this file sets and gets the path to the memory
+ cgroup of the interest.
+
+What: /sys/kernel/mm/damon/admin/kdamonds/<K>/contexts/<C>/schemes/<S>/filters/<F>/addr_start
+Date: Jul 2023
+Contact: SeongJae Park <sj@kernel.org>
+Description: If 'addr' is written to the 'type' file, writing to or reading
+ from this file sets or gets the start address of the address
+ range for the filter.
+
+What: /sys/kernel/mm/damon/admin/kdamonds/<K>/contexts/<C>/schemes/<S>/filters/<F>/addr_end
+Date: Jul 2023
+Contact: SeongJae Park <sj@kernel.org>
+Description: If 'addr' is written to the 'type' file, writing to or reading
+ from this file sets or gets the end address of the address
+ range for the filter.
+
+What: /sys/kernel/mm/damon/admin/kdamonds/<K>/contexts/<C>/schemes/<S>/filters/<F>/min
+Date: Feb 2025
+Contact: SeongJae Park <sj@kernel.org>
+Description: If 'hugepage_size' is written to the 'type' file, writing to
+ or reading from this file sets or gets the minimum size of the
+ hugepage for the filter.
+
+What: /sys/kernel/mm/damon/admin/kdamonds/<K>/contexts/<C>/schemes/<S>/filters/<F>/max
+Date: Feb 2025
+Contact: SeongJae Park <sj@kernel.org>
+Description: If 'hugepage_size' is written to the 'type' file, writing to
+ or reading from this file sets or gets the maximum size of the
+ hugepage for the filter.
+
+What: /sys/kernel/mm/damon/admin/kdamonds/<K>/contexts/<C>/schemes/<S>/filters/<F>/target_idx
+Date: Dec 2022
+Contact: SeongJae Park <sj@kernel.org>
+Description: If 'target' is written to the 'type' file, writing to or
+ reading from this file sets or gets the index of the DAMON
+ monitoring target of the interest.
+
+What: /sys/kernel/mm/damon/admin/kdamonds/<K>/contexts/<C>/schemes/<S>/filters/<F>/matching
+Date: Dec 2022
+Contact: SeongJae Park <sj@kernel.org>
+Description: Writing 'Y' or 'N' to this file sets whether the filter is for
+ the memory of the 'type', or all except the 'type'.
+
+What: /sys/kernel/mm/damon/admin/kdamonds/<K>/contexts/<C>/schemes/<S>/filters/<F>/allow
+Date: Jan 2025
+Contact: SeongJae Park <sj@kernel.org>
+Description: Writing 'Y' or 'N' to this file sets whether to allow or reject
+ applying the scheme's action to the memory that satisfies the
+ 'type' and the 'matching' of the directory.
+
+What: /sys/kernel/mm/damon/admin/kdamonds/<K>/contexts/<C>/schemes/<S>/core_filters
+Date: Feb 2025
+Contact: SeongJae Park <sj@kernel.org>
+Description: Directory for DAMON core layer-handled DAMOS filters. Files
+ under this directory works same to those of
+ /sys/kernel/mm/damon/admin/kdamonds/<K>/contexts/<C>/schemes/<S>/filters
+ directory.
+
+What: /sys/kernel/mm/damon/admin/kdamonds/<K>/contexts/<C>/schemes/<S>/ops_filters
+Date: Feb 2025
+Contact: SeongJae Park <sj@kernel.org>
+Description: Directory for DAMON operations set layer-handled DAMOS filters.
+ Files under this directory works same to those of
+ /sys/kernel/mm/damon/admin/kdamonds/<K>/contexts/<C>/schemes/<S>/filters
+ directory.
+
+What: /sys/kernel/mm/damon/admin/kdamonds/<K>/contexts/<C>/schemes/<S>/dests/nr_dests
+Date: Jul 2025
+Contact: SeongJae Park <sj@kernel.org>
+Description: Writing a number 'N' to this file creates the number of
+ directories for setting action destinations of the scheme named
+ '0' to 'N-1' under the dests/ directory.
+
+What: /sys/kernel/mm/damon/admin/kdamonds/<K>/contexts/<C>/schemes/<S>/dests/<D>/id
+Date: Jul 2025
+Contact: SeongJae Park <sj@kernel.org>
+Description: Writing to and reading from this file sets and gets the id of
+ the DAMOS action destination. For DAMOS_MIGRATE_{HOT,COLD}
+ actions, the destination node's node id can be written and
+ read.
+
+What: /sys/kernel/mm/damon/admin/kdamonds/<K>/contexts/<C>/schemes/<S>/dests/<D>/weight
+Date: Jul 2025
+Contact: SeongJae Park <sj@kernel.org>
+Description: Writing to and reading from this file sets and gets the weight
+ of the DAMOS action destination to select as the destination of
+ each action among the destinations.
+
+What: /sys/kernel/mm/damon/admin/kdamonds/<K>/contexts/<C>/schemes/<S>/stats/nr_tried
+Date: Mar 2022
+Contact: SeongJae Park <sj@kernel.org>
+Description: Reading this file returns the number of regions that the action
+ of the scheme has tried to be applied.
+
+What: /sys/kernel/mm/damon/admin/kdamonds/<K>/contexts/<C>/schemes/<S>/stats/sz_tried
+Date: Mar 2022
+Contact: SeongJae Park <sj@kernel.org>
+Description: Reading this file returns the total size of regions that the
+ action of the scheme has tried to be applied in bytes.
+
+What: /sys/kernel/mm/damon/admin/kdamonds/<K>/contexts/<C>/schemes/<S>/stats/nr_applied
+Date: Mar 2022
+Contact: SeongJae Park <sj@kernel.org>
+Description: Reading this file returns the number of regions that the action
+ of the scheme has successfully applied.
+
+What: /sys/kernel/mm/damon/admin/kdamonds/<K>/contexts/<C>/schemes/<S>/stats/sz_applied
+Date: Mar 2022
+Contact: SeongJae Park <sj@kernel.org>
+Description: Reading this file returns the total size of regions that the
+ action of the scheme has successfully applied in bytes.
+
+What: /sys/kernel/mm/damon/admin/kdamonds/<K>/contexts/<C>/schemes/<S>/stats/sz_ops_filter_passed
+Date: Dec 2024
+Contact: SeongJae Park <sj@kernel.org>
+Description: Reading this file returns the total size of memory that passed
+ DAMON operations layer-handled filters of the scheme in bytes.
+
+What: /sys/kernel/mm/damon/admin/kdamonds/<K>/contexts/<C>/schemes/<S>/stats/qt_exceeds
+Date: Mar 2022
+Contact: SeongJae Park <sj@kernel.org>
+Description: Reading this file returns the number of the exceed events of
+ the scheme's quotas.
+
+What: /sys/kernel/mm/damon/admin/kdamonds/<K>/contexts/<C>/schemes/<S>/tried_regions/total_bytes
+Date: Jul 2023
+Contact: SeongJae Park <sj@kernel.org>
+Description: Reading this file returns the total amount of memory that
+ corresponding DAMON-based Operation Scheme's action has tried
+ to be applied.
+
+What: /sys/kernel/mm/damon/admin/kdamonds/<K>/contexts/<C>/schemes/<S>/tried_regions/<R>/start
+Date: Oct 2022
+Contact: SeongJae Park <sj@kernel.org>
+Description: Reading this file returns the start address of a memory region
+ that corresponding DAMON-based Operation Scheme's action has
+ tried to be applied.
+
+What: /sys/kernel/mm/damon/admin/kdamonds/<K>/contexts/<C>/schemes/<S>/tried_regions/<R>/end
+Date: Oct 2022
+Contact: SeongJae Park <sj@kernel.org>
+Description: Reading this file returns the end address of a memory region
+ that corresponding DAMON-based Operation Scheme's action has
+ tried to be applied.
+
+What: /sys/kernel/mm/damon/admin/kdamonds/<K>/contexts/<C>/schemes/<S>/tried_regions/<R>/nr_accesses
+Date: Oct 2022
+Contact: SeongJae Park <sj@kernel.org>
+Description: Reading this file returns the 'nr_accesses' of a memory region
+ that corresponding DAMON-based Operation Scheme's action has
+ tried to be applied.
+
+What: /sys/kernel/mm/damon/admin/kdamonds/<K>/contexts/<C>/schemes/<S>/tried_regions/<R>/age
+Date: Oct 2022
+Contact: SeongJae Park <sj@kernel.org>
+Description: Reading this file returns the 'age' of a memory region that
+ corresponding DAMON-based Operation Scheme's action has tried
+ to be applied.
+
+What: /sys/kernel/mm/damon/admin/kdamonds/<K>/contexts/<C>/schemes/<S>/tried_regions/<R>/sz_filter_passed
+Date: Dec 2024
+Contact: SeongJae Park <sj@kernel.org>
+Description: Reading this file returns the size of the memory in the region
+ that passed DAMON operations layer-handled filters of the
+ scheme in bytes.
diff --git a/Documentation/ABI/testing/sysfs-kernel-mm-ksm b/Documentation/ABI/testing/sysfs-kernel-mm-ksm
index 1c9bed5595f5..6041a025b65a 100644
--- a/Documentation/ABI/testing/sysfs-kernel-mm-ksm
+++ b/Documentation/ABI/testing/sysfs-kernel-mm-ksm
@@ -41,7 +41,7 @@ Description: Kernel Samepage Merging daemon sysfs interface
sleep_millisecs: how many milliseconds ksm should sleep between
scans.
- See Documentation/vm/ksm.rst for more information.
+ See Documentation/mm/ksm.rst for more information.
What: /sys/kernel/mm/ksm/merge_across_nodes
Date: January 2013
@@ -51,3 +51,11 @@ Description: Control merging pages across different NUMA nodes.
When it is set to 0 only pages from the same node are merged,
otherwise pages from all nodes can be merged together (default).
+
+What: /sys/kernel/mm/ksm/general_profit
+Date: April 2023
+KernelVersion: 6.4
+Contact: Linux memory management mailing list <linux-mm@kvack.org>
+Description: Measure how effective KSM is.
+ general_profit: how effective is KSM. The formula for the
+ calculation is in Documentation/admin-guide/mm/ksm.rst.
diff --git a/Documentation/ABI/testing/sysfs-kernel-mm-memory-tiers b/Documentation/ABI/testing/sysfs-kernel-mm-memory-tiers
new file mode 100644
index 000000000000..721a05b90109
--- /dev/null
+++ b/Documentation/ABI/testing/sysfs-kernel-mm-memory-tiers
@@ -0,0 +1,25 @@
+What: /sys/devices/virtual/memory_tiering/
+Date: August 2022
+Contact: Linux memory management mailing list <linux-mm@kvack.org>
+Description: A collection of all the memory tiers allocated.
+
+ Individual memory tier details are contained in subdirectories
+ named by the abstract distance of the memory tier.
+
+ /sys/devices/virtual/memory_tiering/memory_tierN/
+
+
+What: /sys/devices/virtual/memory_tiering/memory_tierN/
+ /sys/devices/virtual/memory_tiering/memory_tierN/nodelist
+Date: August 2022
+Contact: Linux memory management mailing list <linux-mm@kvack.org>
+Description: Directory with details of a specific memory tier
+
+ This is the directory containing information about a particular
+ memory tier, memtierN, where N is derived based on abstract distance.
+
+ A smaller value of N implies a higher (faster) memory tier in the
+ hierarchy.
+
+ nodelist: NUMA nodes that are part of this memory tier.
+
diff --git a/Documentation/ABI/testing/sysfs-kernel-mm-mempolicy b/Documentation/ABI/testing/sysfs-kernel-mm-mempolicy
new file mode 100644
index 000000000000..8ac327fd7fb6
--- /dev/null
+++ b/Documentation/ABI/testing/sysfs-kernel-mm-mempolicy
@@ -0,0 +1,4 @@
+What: /sys/kernel/mm/mempolicy/
+Date: January 2024
+Contact: Linux memory management mailing list <linux-mm@kvack.org>
+Description: Interface for Mempolicy
diff --git a/Documentation/ABI/testing/sysfs-kernel-mm-mempolicy-weighted-interleave b/Documentation/ABI/testing/sysfs-kernel-mm-mempolicy-weighted-interleave
new file mode 100644
index 000000000000..649c0e9b895c
--- /dev/null
+++ b/Documentation/ABI/testing/sysfs-kernel-mm-mempolicy-weighted-interleave
@@ -0,0 +1,54 @@
+What: /sys/kernel/mm/mempolicy/weighted_interleave/
+Date: January 2024
+Contact: Linux memory management mailing list <linux-mm@kvack.org>
+Description: Configuration Interface for the Weighted Interleave policy
+
+What: /sys/kernel/mm/mempolicy/weighted_interleave/nodeN
+Date: January 2024
+Contact: Linux memory management mailing list <linux-mm@kvack.org>
+Description: Weight configuration interface for nodeN
+
+ The interleave weight for a memory node (N). These weights are
+ utilized by tasks which have set their mempolicy to
+ MPOL_WEIGHTED_INTERLEAVE.
+
+ These weights only affect new allocations, and changes at runtime
+ will not cause migrations on already allocated pages.
+
+ The minimum weight for a node is always 1.
+
+ Minimum weight: 1
+ Maximum weight: 255
+
+ Writing invalid values (i.e. any values not in [1,255],
+ empty string, ...) will return -EINVAL.
+
+ Changing the weight to a valid value will automatically
+ switch the system to manual mode as well.
+
+What: /sys/kernel/mm/mempolicy/weighted_interleave/auto
+Date: May 2025
+Contact: Linux memory management mailing list <linux-mm@kvack.org>
+Description: Auto-weighting configuration interface
+
+ Configuration mode for weighted interleave. 'true' indicates
+ that the system is in auto mode, and a 'false' indicates that
+ the system is in manual mode.
+
+ In auto mode, all node weights are re-calculated and overwritten
+ (visible via the nodeN interfaces) whenever new bandwidth data
+ is made available during either boot or hotplug events.
+
+ In manual mode, node weights can only be updated by the user.
+ Note that nodes that are onlined with previously set weights
+ will reuse those weights. If they were not previously set or
+ are onlined with missing bandwidth data, the weights will use
+ a default weight of 1.
+
+ Writing any true value string (e.g. Y or 1) will enable auto
+ mode, while writing any false value string (e.g. N or 0) will
+ enable manual mode. All other strings are ignored and will
+ return -EINVAL.
+
+ Writing a new weight to a node directly via the nodeN interface
+ will also automatically switch the system to manual mode.
diff --git a/Documentation/ABI/testing/sysfs-kernel-mm-numa b/Documentation/ABI/testing/sysfs-kernel-mm-numa
index 77e559d4ed80..90e375ff54cb 100644
--- a/Documentation/ABI/testing/sysfs-kernel-mm-numa
+++ b/Documentation/ABI/testing/sysfs-kernel-mm-numa
@@ -16,9 +16,13 @@ Description: Enable/disable demoting pages during reclaim
Allowing page migration during reclaim enables these
systems to migrate pages from fast tiers to slow tiers
when the fast tier is under pressure. This migration
- is performed before swap. It may move data to a NUMA
- node that does not fall into the cpuset of the
- allocating process which might be construed to violate
- the guarantees of cpusets. This should not be enabled
- on systems which need strict cpuset location
- guarantees.
+ is performed before swap if an eligible numa node is
+ present in cpuset.mems for the cgroup (or if cpuset v1
+ is being used). If cpusets.mems changes at runtime, it
+ may move data to a NUMA node that does not fall into the
+ cpuset of the new cpusets.mems, which might be construed
+ to violate the guarantees of cpusets. Shared memory,
+ such as libraries, owned by another cgroup may still be
+ demoted and result in memory use on a node not present
+ in cpusets.mem. This should not be enabled on systems
+ which need strict cpuset location guarantees.
diff --git a/Documentation/ABI/testing/sysfs-kernel-mm-transparent-hugepage b/Documentation/ABI/testing/sysfs-kernel-mm-transparent-hugepage
new file mode 100644
index 000000000000..7bfbb9cc2c11
--- /dev/null
+++ b/Documentation/ABI/testing/sysfs-kernel-mm-transparent-hugepage
@@ -0,0 +1,18 @@
+What: /sys/kernel/mm/transparent_hugepage/
+Date: April 2024
+Contact: Linux memory management mailing list <linux-mm@kvack.org>
+Description:
+ /sys/kernel/mm/transparent_hugepage/ contains a number of files and
+ subdirectories,
+
+ - defrag
+ - enabled
+ - hpage_pmd_size
+ - khugepaged
+ - shmem_enabled
+ - use_zero_page
+ - subdirectories of the form hugepages-<size>kB, where <size>
+ is the page size of the hugepages supported by the kernel/CPU
+ combination.
+
+ See Documentation/admin-guide/mm/transhuge.rst for details.
diff --git a/Documentation/ABI/testing/sysfs-kernel-oops_count b/Documentation/ABI/testing/sysfs-kernel-oops_count
new file mode 100644
index 000000000000..156cca9dbc96
--- /dev/null
+++ b/Documentation/ABI/testing/sysfs-kernel-oops_count
@@ -0,0 +1,6 @@
+What: /sys/kernel/oops_count
+Date: November 2022
+KernelVersion: 6.2.0
+Contact: Linux Kernel Hardening List <linux-hardening@vger.kernel.org>
+Description:
+ Shows how many times the system has Oopsed since last boot.
diff --git a/Documentation/ABI/testing/sysfs-kernel-rcu_stall_count b/Documentation/ABI/testing/sysfs-kernel-rcu_stall_count
new file mode 100644
index 000000000000..a4a97a7f4a4d
--- /dev/null
+++ b/Documentation/ABI/testing/sysfs-kernel-rcu_stall_count
@@ -0,0 +1,6 @@
+What: /sys/kernel/rcu_stall_count
+Date: May 2025
+KernelVersion: 6.16
+Contact: Linux kernel mailing list <linux-kernel@vger.kernel.org>
+Description:
+ Shows how many times the system has detected an RCU stall since last boot.
diff --git a/Documentation/ABI/testing/sysfs-kernel-reboot b/Documentation/ABI/testing/sysfs-kernel-reboot
index 837330fb2511..52571fd5ddba 100644
--- a/Documentation/ABI/testing/sysfs-kernel-reboot
+++ b/Documentation/ABI/testing/sysfs-kernel-reboot
@@ -1,7 +1,7 @@
What: /sys/kernel/reboot
Date: November 2020
KernelVersion: 5.11
-Contact: Matteo Croce <mcroce@microsoft.com>
+Contact: Matteo Croce <teknoraver@meta.com>
Description: Interface to set the kernel reboot behavior, similarly to
what can be done via the reboot= cmdline option.
(see Documentation/admin-guide/kernel-parameters.txt)
@@ -9,24 +9,32 @@ Description: Interface to set the kernel reboot behavior, similarly to
What: /sys/kernel/reboot/mode
Date: November 2020
KernelVersion: 5.11
-Contact: Matteo Croce <mcroce@microsoft.com>
+Contact: Matteo Croce <teknoraver@meta.com>
Description: Reboot mode. Valid values are: cold warm hard soft gpio
What: /sys/kernel/reboot/type
Date: November 2020
KernelVersion: 5.11
-Contact: Matteo Croce <mcroce@microsoft.com>
+Contact: Matteo Croce <teknoraver@meta.com>
Description: Reboot type. Valid values are: bios acpi kbd triple efi pci
What: /sys/kernel/reboot/cpu
Date: November 2020
KernelVersion: 5.11
-Contact: Matteo Croce <mcroce@microsoft.com>
+Contact: Matteo Croce <teknoraver@meta.com>
Description: CPU number to use to reboot.
What: /sys/kernel/reboot/force
Date: November 2020
KernelVersion: 5.11
-Contact: Matteo Croce <mcroce@microsoft.com>
+Contact: Matteo Croce <teknoraver@meta.com>
Description: Don't wait for any other CPUs on reboot and
avoid anything that could hang.
+
+What: /sys/kernel/reboot/hw_protection
+Date: April 2025
+KernelVersion: 6.15
+Contact: Ahmad Fatoum <a.fatoum@pengutronix.de>
+Description: Hardware protection action taken on critical events like
+ overtemperature or imminent voltage loss.
+ Valid values are: reboot shutdown
diff --git a/Documentation/ABI/testing/sysfs-kernel-slab b/Documentation/ABI/testing/sysfs-kernel-slab
index c440f4946e12..b26e4299f822 100644
--- a/Documentation/ABI/testing/sysfs-kernel-slab
+++ b/Documentation/ABI/testing/sysfs-kernel-slab
@@ -2,7 +2,7 @@ What: /sys/kernel/slab
Date: May 2007
KernelVersion: 2.6.22
Contact: Pekka Enberg <penberg@cs.helsinki.fi>,
- Christoph Lameter <cl@linux-foundation.org>
+ Christoph Lameter <cl@gentwo.org>
Description:
The /sys/kernel/slab directory contains a snapshot of the
internal state of the SLUB allocator for each cache. Certain
@@ -14,7 +14,7 @@ What: /sys/kernel/slab/<cache>/aliases
Date: May 2007
KernelVersion: 2.6.22
Contact: Pekka Enberg <penberg@cs.helsinki.fi>,
- Christoph Lameter <cl@linux-foundation.org>
+ Christoph Lameter <cl@gentwo.org>
Description:
The aliases file is read-only and specifies how many caches
have merged into this cache.
@@ -23,7 +23,7 @@ What: /sys/kernel/slab/<cache>/align
Date: May 2007
KernelVersion: 2.6.22
Contact: Pekka Enberg <penberg@cs.helsinki.fi>,
- Christoph Lameter <cl@linux-foundation.org>
+ Christoph Lameter <cl@gentwo.org>
Description:
The align file is read-only and specifies the cache's object
alignment in bytes.
@@ -32,18 +32,19 @@ What: /sys/kernel/slab/<cache>/alloc_calls
Date: May 2007
KernelVersion: 2.6.22
Contact: Pekka Enberg <penberg@cs.helsinki.fi>,
- Christoph Lameter <cl@linux-foundation.org>
+ Christoph Lameter <cl@gentwo.org>
Description:
The alloc_calls file is read-only and lists the kernel code
locations from which allocations for this cache were performed.
The alloc_calls file only contains information if debugging is
- enabled for that cache (see Documentation/vm/slub.rst).
+ enabled for that cache (see
+ Documentation/admin-guide/mm/slab.rst).
What: /sys/kernel/slab/<cache>/alloc_fastpath
Date: February 2008
KernelVersion: 2.6.25
Contact: Pekka Enberg <penberg@cs.helsinki.fi>,
- Christoph Lameter <cl@linux-foundation.org>
+ Christoph Lameter <cl@gentwo.org>
Description:
The alloc_fastpath file shows how many objects have been
allocated using the fast path. It can be written to clear the
@@ -54,7 +55,7 @@ What: /sys/kernel/slab/<cache>/alloc_from_partial
Date: February 2008
KernelVersion: 2.6.25
Contact: Pekka Enberg <penberg@cs.helsinki.fi>,
- Christoph Lameter <cl@linux-foundation.org>
+ Christoph Lameter <cl@gentwo.org>
Description:
The alloc_from_partial file shows how many times a cpu slab has
been full and it has been refilled by using a slab from the list
@@ -66,7 +67,7 @@ What: /sys/kernel/slab/<cache>/alloc_refill
Date: February 2008
KernelVersion: 2.6.25
Contact: Pekka Enberg <penberg@cs.helsinki.fi>,
- Christoph Lameter <cl@linux-foundation.org>
+ Christoph Lameter <cl@gentwo.org>
Description:
The alloc_refill file shows how many times the per-cpu freelist
was empty but there were objects available as the result of
@@ -77,7 +78,7 @@ What: /sys/kernel/slab/<cache>/alloc_slab
Date: February 2008
KernelVersion: 2.6.25
Contact: Pekka Enberg <penberg@cs.helsinki.fi>,
- Christoph Lameter <cl@linux-foundation.org>
+ Christoph Lameter <cl@gentwo.org>
Description:
The alloc_slab file is shows how many times a new slab had to
be allocated from the page allocator. It can be written to
@@ -88,7 +89,7 @@ What: /sys/kernel/slab/<cache>/alloc_slowpath
Date: February 2008
KernelVersion: 2.6.25
Contact: Pekka Enberg <penberg@cs.helsinki.fi>,
- Christoph Lameter <cl@linux-foundation.org>
+ Christoph Lameter <cl@gentwo.org>
Description:
The alloc_slowpath file shows how many objects have been
allocated using the slow path because of a refill or
@@ -100,7 +101,7 @@ What: /sys/kernel/slab/<cache>/cache_dma
Date: May 2007
KernelVersion: 2.6.22
Contact: Pekka Enberg <penberg@cs.helsinki.fi>,
- Christoph Lameter <cl@linux-foundation.org>
+ Christoph Lameter <cl@gentwo.org>
Description:
The cache_dma file is read-only and specifies whether objects
are from ZONE_DMA.
@@ -110,7 +111,7 @@ What: /sys/kernel/slab/<cache>/cpu_slabs
Date: May 2007
KernelVersion: 2.6.22
Contact: Pekka Enberg <penberg@cs.helsinki.fi>,
- Christoph Lameter <cl@linux-foundation.org>
+ Christoph Lameter <cl@gentwo.org>
Description:
The cpu_slabs file is read-only and displays how many cpu slabs
are active and their NUMA locality.
@@ -119,7 +120,7 @@ What: /sys/kernel/slab/<cache>/cpuslab_flush
Date: April 2009
KernelVersion: 2.6.31
Contact: Pekka Enberg <penberg@cs.helsinki.fi>,
- Christoph Lameter <cl@linux-foundation.org>
+ Christoph Lameter <cl@gentwo.org>
Description:
The file cpuslab_flush shows how many times a cache's cpu slabs
have been flushed as the result of destroying or shrinking a
@@ -132,7 +133,7 @@ What: /sys/kernel/slab/<cache>/ctor
Date: May 2007
KernelVersion: 2.6.22
Contact: Pekka Enberg <penberg@cs.helsinki.fi>,
- Christoph Lameter <cl@linux-foundation.org>
+ Christoph Lameter <cl@gentwo.org>
Description:
The ctor file is read-only and specifies the cache's object
constructor function, which is invoked for each object when a
@@ -142,7 +143,7 @@ What: /sys/kernel/slab/<cache>/deactivate_empty
Date: February 2008
KernelVersion: 2.6.25
Contact: Pekka Enberg <penberg@cs.helsinki.fi>,
- Christoph Lameter <cl@linux-foundation.org>
+ Christoph Lameter <cl@gentwo.org>
Description:
The deactivate_empty file shows how many times an empty cpu slab
was deactivated. It can be written to clear the current count.
@@ -152,7 +153,7 @@ What: /sys/kernel/slab/<cache>/deactivate_full
Date: February 2008
KernelVersion: 2.6.25
Contact: Pekka Enberg <penberg@cs.helsinki.fi>,
- Christoph Lameter <cl@linux-foundation.org>
+ Christoph Lameter <cl@gentwo.org>
Description:
The deactivate_full file shows how many times a full cpu slab
was deactivated. It can be written to clear the current count.
@@ -162,7 +163,7 @@ What: /sys/kernel/slab/<cache>/deactivate_remote_frees
Date: February 2008
KernelVersion: 2.6.25
Contact: Pekka Enberg <penberg@cs.helsinki.fi>,
- Christoph Lameter <cl@linux-foundation.org>
+ Christoph Lameter <cl@gentwo.org>
Description:
The deactivate_remote_frees file shows how many times a cpu slab
has been deactivated and contained free objects that were freed
@@ -173,7 +174,7 @@ What: /sys/kernel/slab/<cache>/deactivate_to_head
Date: February 2008
KernelVersion: 2.6.25
Contact: Pekka Enberg <penberg@cs.helsinki.fi>,
- Christoph Lameter <cl@linux-foundation.org>
+ Christoph Lameter <cl@gentwo.org>
Description:
The deactivate_to_head file shows how many times a partial cpu
slab was deactivated and added to the head of its node's partial
@@ -184,7 +185,7 @@ What: /sys/kernel/slab/<cache>/deactivate_to_tail
Date: February 2008
KernelVersion: 2.6.25
Contact: Pekka Enberg <penberg@cs.helsinki.fi>,
- Christoph Lameter <cl@linux-foundation.org>
+ Christoph Lameter <cl@gentwo.org>
Description:
The deactivate_to_tail file shows how many times a partial cpu
slab was deactivated and added to the tail of its node's partial
@@ -195,7 +196,7 @@ What: /sys/kernel/slab/<cache>/destroy_by_rcu
Date: May 2007
KernelVersion: 2.6.22
Contact: Pekka Enberg <penberg@cs.helsinki.fi>,
- Christoph Lameter <cl@linux-foundation.org>
+ Christoph Lameter <cl@gentwo.org>
Description:
The destroy_by_rcu file is read-only and specifies whether
slabs (not objects) are freed by rcu.
@@ -204,7 +205,7 @@ What: /sys/kernel/slab/<cache>/free_add_partial
Date: February 2008
KernelVersion: 2.6.25
Contact: Pekka Enberg <penberg@cs.helsinki.fi>,
- Christoph Lameter <cl@linux-foundation.org>
+ Christoph Lameter <cl@gentwo.org>
Description:
The free_add_partial file shows how many times an object has
been freed in a full slab so that it had to added to its node's
@@ -215,17 +216,17 @@ What: /sys/kernel/slab/<cache>/free_calls
Date: May 2007
KernelVersion: 2.6.22
Contact: Pekka Enberg <penberg@cs.helsinki.fi>,
- Christoph Lameter <cl@linux-foundation.org>
+ Christoph Lameter <cl@gentwo.org>
Description:
The free_calls file is read-only and lists the locations of
object frees if slab debugging is enabled (see
- Documentation/vm/slub.rst).
+ Documentation/admin-guide/mm/slab.rst).
What: /sys/kernel/slab/<cache>/free_fastpath
Date: February 2008
KernelVersion: 2.6.25
Contact: Pekka Enberg <penberg@cs.helsinki.fi>,
- Christoph Lameter <cl@linux-foundation.org>
+ Christoph Lameter <cl@gentwo.org>
Description:
The free_fastpath file shows how many objects have been freed
using the fast path because it was an object from the cpu slab.
@@ -236,7 +237,7 @@ What: /sys/kernel/slab/<cache>/free_frozen
Date: February 2008
KernelVersion: 2.6.25
Contact: Pekka Enberg <penberg@cs.helsinki.fi>,
- Christoph Lameter <cl@linux-foundation.org>
+ Christoph Lameter <cl@gentwo.org>
Description:
The free_frozen file shows how many objects have been freed to
a frozen slab (i.e. a remote cpu slab). It can be written to
@@ -247,7 +248,7 @@ What: /sys/kernel/slab/<cache>/free_remove_partial
Date: February 2008
KernelVersion: 2.6.25
Contact: Pekka Enberg <penberg@cs.helsinki.fi>,
- Christoph Lameter <cl@linux-foundation.org>
+ Christoph Lameter <cl@gentwo.org>
Description:
The free_remove_partial file shows how many times an object has
been freed to a now-empty slab so that it had to be removed from
@@ -259,7 +260,7 @@ What: /sys/kernel/slab/<cache>/free_slab
Date: February 2008
KernelVersion: 2.6.25
Contact: Pekka Enberg <penberg@cs.helsinki.fi>,
- Christoph Lameter <cl@linux-foundation.org>
+ Christoph Lameter <cl@gentwo.org>
Description:
The free_slab file shows how many times an empty slab has been
freed back to the page allocator. It can be written to clear
@@ -270,7 +271,7 @@ What: /sys/kernel/slab/<cache>/free_slowpath
Date: February 2008
KernelVersion: 2.6.25
Contact: Pekka Enberg <penberg@cs.helsinki.fi>,
- Christoph Lameter <cl@linux-foundation.org>
+ Christoph Lameter <cl@gentwo.org>
Description:
The free_slowpath file shows how many objects have been freed
using the slow path (i.e. to a full or partial slab). It can
@@ -281,7 +282,7 @@ What: /sys/kernel/slab/<cache>/hwcache_align
Date: May 2007
KernelVersion: 2.6.22
Contact: Pekka Enberg <penberg@cs.helsinki.fi>,
- Christoph Lameter <cl@linux-foundation.org>
+ Christoph Lameter <cl@gentwo.org>
Description:
The hwcache_align file is read-only and specifies whether
objects are aligned on cachelines.
@@ -301,7 +302,7 @@ What: /sys/kernel/slab/<cache>/object_size
Date: May 2007
KernelVersion: 2.6.22
Contact: Pekka Enberg <penberg@cs.helsinki.fi>,
- Christoph Lameter <cl@linux-foundation.org>
+ Christoph Lameter <cl@gentwo.org>
Description:
The object_size file is read-only and specifies the cache's
object size.
@@ -310,7 +311,7 @@ What: /sys/kernel/slab/<cache>/objects
Date: May 2007
KernelVersion: 2.6.22
Contact: Pekka Enberg <penberg@cs.helsinki.fi>,
- Christoph Lameter <cl@linux-foundation.org>
+ Christoph Lameter <cl@gentwo.org>
Description:
The objects file is read-only and displays how many objects are
active and from which nodes they are from.
@@ -319,7 +320,7 @@ What: /sys/kernel/slab/<cache>/objects_partial
Date: April 2008
KernelVersion: 2.6.26
Contact: Pekka Enberg <penberg@cs.helsinki.fi>,
- Christoph Lameter <cl@linux-foundation.org>
+ Christoph Lameter <cl@gentwo.org>
Description:
The objects_partial file is read-only and displays how many
objects are on partial slabs and from which nodes they are
@@ -329,7 +330,7 @@ What: /sys/kernel/slab/<cache>/objs_per_slab
Date: May 2007
KernelVersion: 2.6.22
Contact: Pekka Enberg <penberg@cs.helsinki.fi>,
- Christoph Lameter <cl@linux-foundation.org>
+ Christoph Lameter <cl@gentwo.org>
Description:
The file objs_per_slab is read-only and specifies how many
objects may be allocated from a single slab of the order
@@ -339,7 +340,7 @@ What: /sys/kernel/slab/<cache>/order
Date: May 2007
KernelVersion: 2.6.22
Contact: Pekka Enberg <penberg@cs.helsinki.fi>,
- Christoph Lameter <cl@linux-foundation.org>
+ Christoph Lameter <cl@gentwo.org>
Description:
The order file specifies the page order at which new slabs are
allocated. It is writable and can be changed to increase the
@@ -356,7 +357,7 @@ What: /sys/kernel/slab/<cache>/order_fallback
Date: April 2008
KernelVersion: 2.6.26
Contact: Pekka Enberg <penberg@cs.helsinki.fi>,
- Christoph Lameter <cl@linux-foundation.org>
+ Christoph Lameter <cl@gentwo.org>
Description:
The order_fallback file shows how many times an allocation of a
new slab has not been possible at the cache's order and instead
@@ -369,7 +370,7 @@ What: /sys/kernel/slab/<cache>/partial
Date: May 2007
KernelVersion: 2.6.22
Contact: Pekka Enberg <penberg@cs.helsinki.fi>,
- Christoph Lameter <cl@linux-foundation.org>
+ Christoph Lameter <cl@gentwo.org>
Description:
The partial file is read-only and displays how long many
partial slabs there are and how long each node's list is.
@@ -378,7 +379,7 @@ What: /sys/kernel/slab/<cache>/poison
Date: May 2007
KernelVersion: 2.6.22
Contact: Pekka Enberg <penberg@cs.helsinki.fi>,
- Christoph Lameter <cl@linux-foundation.org>
+ Christoph Lameter <cl@gentwo.org>
Description:
The poison file specifies whether objects should be poisoned
when a new slab is allocated.
@@ -387,7 +388,7 @@ What: /sys/kernel/slab/<cache>/reclaim_account
Date: May 2007
KernelVersion: 2.6.22
Contact: Pekka Enberg <penberg@cs.helsinki.fi>,
- Christoph Lameter <cl@linux-foundation.org>
+ Christoph Lameter <cl@gentwo.org>
Description:
The reclaim_account file specifies whether the cache's objects
are reclaimable (and grouped by their mobility).
@@ -396,7 +397,7 @@ What: /sys/kernel/slab/<cache>/red_zone
Date: May 2007
KernelVersion: 2.6.22
Contact: Pekka Enberg <penberg@cs.helsinki.fi>,
- Christoph Lameter <cl@linux-foundation.org>
+ Christoph Lameter <cl@gentwo.org>
Description:
The red_zone file specifies whether the cache's objects are red
zoned.
@@ -405,7 +406,7 @@ What: /sys/kernel/slab/<cache>/remote_node_defrag_ratio
Date: January 2008
KernelVersion: 2.6.25
Contact: Pekka Enberg <penberg@cs.helsinki.fi>,
- Christoph Lameter <cl@linux-foundation.org>
+ Christoph Lameter <cl@gentwo.org>
Description:
The file remote_node_defrag_ratio specifies the percentage of
times SLUB will attempt to refill the cpu slab with a partial
@@ -419,7 +420,7 @@ What: /sys/kernel/slab/<cache>/sanity_checks
Date: May 2007
KernelVersion: 2.6.22
Contact: Pekka Enberg <penberg@cs.helsinki.fi>,
- Christoph Lameter <cl@linux-foundation.org>
+ Christoph Lameter <cl@gentwo.org>
Description:
The sanity_checks file specifies whether expensive checks
should be performed on free and, at minimum, enables double free
@@ -430,7 +431,7 @@ What: /sys/kernel/slab/<cache>/shrink
Date: May 2007
KernelVersion: 2.6.22
Contact: Pekka Enberg <penberg@cs.helsinki.fi>,
- Christoph Lameter <cl@linux-foundation.org>
+ Christoph Lameter <cl@gentwo.org>
Description:
The shrink file is used to reclaim unused slab cache
memory from a cache. Empty per-cpu or partial slabs
@@ -446,7 +447,7 @@ What: /sys/kernel/slab/<cache>/slab_size
Date: May 2007
KernelVersion: 2.6.22
Contact: Pekka Enberg <penberg@cs.helsinki.fi>,
- Christoph Lameter <cl@linux-foundation.org>
+ Christoph Lameter <cl@gentwo.org>
Description:
The slab_size file is read-only and specifies the object size
with metadata (debugging information and alignment) in bytes.
@@ -455,7 +456,7 @@ What: /sys/kernel/slab/<cache>/slabs
Date: May 2007
KernelVersion: 2.6.22
Contact: Pekka Enberg <penberg@cs.helsinki.fi>,
- Christoph Lameter <cl@linux-foundation.org>
+ Christoph Lameter <cl@gentwo.org>
Description:
The slabs file is read-only and displays how long many slabs
there are (both cpu and partial) and from which nodes they are
@@ -465,7 +466,7 @@ What: /sys/kernel/slab/<cache>/store_user
Date: May 2007
KernelVersion: 2.6.22
Contact: Pekka Enberg <penberg@cs.helsinki.fi>,
- Christoph Lameter <cl@linux-foundation.org>
+ Christoph Lameter <cl@gentwo.org>
Description:
The store_user file specifies whether the location of
allocation or free should be tracked for a cache.
@@ -474,7 +475,7 @@ What: /sys/kernel/slab/<cache>/total_objects
Date: April 2008
KernelVersion: 2.6.26
Contact: Pekka Enberg <penberg@cs.helsinki.fi>,
- Christoph Lameter <cl@linux-foundation.org>
+ Christoph Lameter <cl@gentwo.org>
Description:
The total_objects file is read-only and displays how many total
objects a cache has and from which nodes they are from.
@@ -483,7 +484,7 @@ What: /sys/kernel/slab/<cache>/trace
Date: May 2007
KernelVersion: 2.6.22
Contact: Pekka Enberg <penberg@cs.helsinki.fi>,
- Christoph Lameter <cl@linux-foundation.org>
+ Christoph Lameter <cl@gentwo.org>
Description:
The trace file specifies whether object allocations and frees
should be traced.
@@ -492,7 +493,7 @@ What: /sys/kernel/slab/<cache>/validate
Date: May 2007
KernelVersion: 2.6.22
Contact: Pekka Enberg <penberg@cs.helsinki.fi>,
- Christoph Lameter <cl@linux-foundation.org>
+ Christoph Lameter <cl@gentwo.org>
Description:
Writing to the validate file causes SLUB to traverse all of its
cache's objects and check the validity of metadata.
@@ -506,14 +507,14 @@ Description:
What: /sys/kernel/slab/<cache>/slabs_cpu_partial
Date: Aug 2011
-Contact: Christoph Lameter <cl@linux.com>
+Contact: Christoph Lameter <cl@gentwo.org>
Description:
This read-only file shows the number of partialli allocated
frozen slabs.
What: /sys/kernel/slab/<cache>/cpu_partial
Date: Aug 2011
-Contact: Christoph Lameter <cl@linux.com>
+Contact: Christoph Lameter <cl@gentwo.org>
Description:
This read-only file shows the number of per cpu partial
pages to keep around.
diff --git a/Documentation/ABI/testing/sysfs-kernel-softlockup_count b/Documentation/ABI/testing/sysfs-kernel-softlockup_count
new file mode 100644
index 000000000000..337ff5531b5f
--- /dev/null
+++ b/Documentation/ABI/testing/sysfs-kernel-softlockup_count
@@ -0,0 +1,7 @@
+What: /sys/kernel/softlockup_count
+Date: May 2025
+KernelVersion: 6.16
+Contact: Linux kernel mailing list <linux-kernel@vger.kernel.org>
+Description:
+ Shows how many times the system has detected a soft lockup since last boot.
+ Available only if CONFIG_SOFTLOCKUP_DETECTOR is enabled.
diff --git a/Documentation/ABI/testing/sysfs-kernel-warn_count b/Documentation/ABI/testing/sysfs-kernel-warn_count
new file mode 100644
index 000000000000..90a029813717
--- /dev/null
+++ b/Documentation/ABI/testing/sysfs-kernel-warn_count
@@ -0,0 +1,6 @@
+What: /sys/kernel/warn_count
+Date: November 2022
+KernelVersion: 6.2.0
+Contact: Linux Kernel Hardening List <linux-hardening@vger.kernel.org>
+Description:
+ Shows how many times the system has Warned since last boot.
diff --git a/Documentation/ABI/testing/sysfs-mce b/Documentation/ABI/testing/sysfs-mce
index c8cd989034b4..83172f50e27c 100644
--- a/Documentation/ABI/testing/sysfs-mce
+++ b/Documentation/ABI/testing/sysfs-mce
@@ -53,38 +53,6 @@ Description:
(but some corrected errors might be still reported
in other ways)
-What: /sys/devices/system/machinecheck/machinecheckX/tolerant
-Contact: Andi Kleen <ak@linux.intel.com>
-Date: Feb, 2007
-Description:
- The entries appear for each CPU, but they are truly shared
- between all CPUs.
-
- Tolerance level. When a machine check exception occurs for a
- non corrected machine check the kernel can take different
- actions.
-
- Since machine check exceptions can happen any time it is
- sometimes risky for the kernel to kill a process because it
- defies normal kernel locking rules. The tolerance level
- configures how hard the kernel tries to recover even at some
- risk of deadlock. Higher tolerant values trade potentially
- better uptime with the risk of a crash or even corruption
- (for tolerant >= 3).
-
- == ===========================================================
- 0 always panic on uncorrected errors, log corrected errors
- 1 panic or SIGBUS on uncorrected errors, log corrected errors
- 2 SIGBUS or log uncorrected errors, log corrected errors
- 3 never panic or SIGBUS, log all errors (for testing only)
- == ===========================================================
-
- Default: 1
-
- Note this only makes a difference if the CPU allows recovery
- from a machine check exception. Current x86 CPUs generally
- do not.
-
What: /sys/devices/system/machinecheck/machinecheckX/trigger
Contact: Andi Kleen <ak@linux.intel.com>
Date: Feb, 2007
diff --git a/Documentation/ABI/testing/sysfs-memory-page-offline b/Documentation/ABI/testing/sysfs-memory-page-offline
index e14703f12fdf..00f4e35f916f 100644
--- a/Documentation/ABI/testing/sysfs-memory-page-offline
+++ b/Documentation/ABI/testing/sysfs-memory-page-offline
@@ -10,7 +10,7 @@ Description:
dropping it if possible. The kernel will then be placed
on the bad page list and never be reused.
- The offlining is done in kernel specific granuality.
+ The offlining is done in kernel specific granularity.
Normally it's the base page size of the kernel, but
this might change.
@@ -35,7 +35,7 @@ Description:
to access this page assuming it's poisoned by the
hardware.
- The offlining is done in kernel specific granuality.
+ The offlining is done in kernel specific granularity.
Normally it's the base page size of the kernel, but
this might change.
diff --git a/Documentation/ABI/testing/sysfs-module b/Documentation/ABI/testing/sysfs-module
index 08886367d047..6bc9af6229f0 100644
--- a/Documentation/ABI/testing/sysfs-module
+++ b/Documentation/ABI/testing/sysfs-module
@@ -59,4 +59,17 @@ Description: Module taint flags:
F force-loaded module
C staging driver module
E unsigned module
+ K livepatch module
+ N in-kernel test module
== =====================
+
+What: /sys/module/grant_table/parameters/free_per_iteration
+Date: July 2023
+KernelVersion: 6.5 but backported to all supported stable branches
+Contact: Xen developer discussion <xen-devel@lists.xenproject.org>
+Description: Read and write number of grant entries to attempt to free per iteration.
+
+ Note: Future versions of Xen and Linux may provide a better
+ interface for controlling the rate of deferred grant reclaim
+ or may not need it at all.
+Users: Qubes OS (https://www.qubes-os.org)
diff --git a/Documentation/ABI/testing/sysfs-nvmem-cells b/Documentation/ABI/testing/sysfs-nvmem-cells
new file mode 100644
index 000000000000..c7c9444f92a8
--- /dev/null
+++ b/Documentation/ABI/testing/sysfs-nvmem-cells
@@ -0,0 +1,21 @@
+What: /sys/bus/nvmem/devices/.../cells/<cell-name>
+Date: May 2023
+KernelVersion: 6.5
+Contact: Miquel Raynal <miquel.raynal@bootlin.com>
+Description:
+ The "cells" folder contains one file per cell exposed by the
+ NVMEM device. The name of the file is: "<name>@<byte>,<bit>",
+ with <name> being the cell name and <where> its location in
+ the NVMEM device, in hexadecimal bytes and bits (without the
+ '0x' prefix, to mimic device tree node names). The length of
+ the file is the size of the cell (when known). The content of
+ the file is the binary content of the cell (may sometimes be
+ ASCII, likely without trailing character).
+ Note: This file is only present if CONFIG_NVMEM_SYSFS
+ is enabled.
+
+ Example::
+
+ hexdump -C /sys/bus/nvmem/devices/1-00563/cells/product-name@d,0
+ 00000000 54 4e 34 38 4d 2d 50 2d 44 4e |TN48M-P-DN|
+ 0000000a
diff --git a/Documentation/ABI/testing/sysfs-ocfs2 b/Documentation/ABI/testing/sysfs-ocfs2
index b7cc516a8a8a..494d7c1ac710 100644
--- a/Documentation/ABI/testing/sysfs-ocfs2
+++ b/Documentation/ABI/testing/sysfs-ocfs2
@@ -1,13 +1,13 @@
What: /sys/fs/ocfs2/
Date: April 2008
-Contact: ocfs2-devel@oss.oracle.com
+Contact: ocfs2-devel@lists.linux.dev
Description:
The /sys/fs/ocfs2 directory contains knobs used by the
ocfs2-tools to interact with the filesystem.
What: /sys/fs/ocfs2/max_locking_protocol
Date: April 2008
-Contact: ocfs2-devel@oss.oracle.com
+Contact: ocfs2-devel@lists.linux.dev
Description:
The /sys/fs/ocfs2/max_locking_protocol file displays version
of ocfs2 locking supported by the filesystem. This version
@@ -28,7 +28,7 @@ Description:
What: /sys/fs/ocfs2/loaded_cluster_plugins
Date: April 2008
-Contact: ocfs2-devel@oss.oracle.com
+Contact: ocfs2-devel@lists.linux.dev
Description:
The /sys/fs/ocfs2/loaded_cluster_plugins file describes
the available plugins to support ocfs2 cluster operation.
@@ -48,7 +48,7 @@ Description:
What: /sys/fs/ocfs2/active_cluster_plugin
Date: April 2008
-Contact: ocfs2-devel@oss.oracle.com
+Contact: ocfs2-devel@lists.linux.dev
Description:
The /sys/fs/ocfs2/active_cluster_plugin displays which
cluster plugin is currently in use by the filesystem.
@@ -65,7 +65,7 @@ Description:
What: /sys/fs/ocfs2/cluster_stack
Date: April 2008
-Contact: ocfs2-devel@oss.oracle.com
+Contact: ocfs2-devel@lists.linux.dev
Description:
The /sys/fs/ocfs2/cluster_stack file contains the name
of current ocfs2 cluster stack. This value is set by
@@ -86,4 +86,4 @@ Description:
stack return an error.
Users:
- ocfs2-tools <ocfs2-tools-devel@oss.oracle.com>
+ ocfs2-tools <ocfs2-tools-devel@lists.linux.dev>
diff --git a/Documentation/ABI/testing/sysfs-platform-alienware-wmi b/Documentation/ABI/testing/sysfs-platform-alienware-wmi
new file mode 100644
index 000000000000..4877b3745f4e
--- /dev/null
+++ b/Documentation/ABI/testing/sysfs-platform-alienware-wmi
@@ -0,0 +1,14 @@
+What: /sys/class/hwmon/hwmonX/fanY_boost
+Date: March 2025
+KernelVersion: 6.15
+Contact: Kurt Borja <kuurtb@gmail.com>
+Description:
+ This file exposes fan boost control for Dell gaming laptops with
+ the AWCC WMI interface.
+
+ See Documentation/admin-guide/laptops/alienware-wmi.rst for
+ details.
+
+ Integer value in the range 0 to 255
+
+ RW
diff --git a/Documentation/ABI/testing/sysfs-platform-asus-wmi b/Documentation/ABI/testing/sysfs-platform-asus-wmi
index 04885738cf15..89acb6638df8 100644
--- a/Documentation/ABI/testing/sysfs-platform-asus-wmi
+++ b/Documentation/ABI/testing/sysfs-platform-asus-wmi
@@ -57,3 +57,175 @@ Description:
* 0 - default,
* 1 - overboost,
* 2 - silent
+
+What: /sys/devices/platform/<platform>/gpu_mux_mode
+Date: Aug 2022
+KernelVersion: 6.1
+Contact: "Luke Jones" <luke@ljones.dev>
+Description:
+ DEPRECATED, WILL BE REMOVED SOON: please use asus-armoury
+ Switch the GPU hardware MUX mode. Laptops with this feature can
+ can be toggled to boot with only the dGPU (discrete mode) or in
+ standard Optimus/Hybrid mode. On switch a reboot is required:
+
+ * 0 - Discrete GPU,
+ * 1 - Optimus/Hybrid,
+
+What: /sys/devices/platform/<platform>/dgpu_disable
+Date: Aug 2022
+KernelVersion: 5.17
+Contact: "Luke Jones" <luke@ljones.dev>
+Description:
+ DEPRECATED, WILL BE REMOVED SOON: please use asus-armoury
+ Disable discrete GPU:
+ * 0 - Enable dGPU,
+ * 1 - Disable dGPU
+
+What: /sys/devices/platform/<platform>/egpu_enable
+Date: Aug 2022
+KernelVersion: 5.17
+Contact: "Luke Jones" <luke@ljones.dev>
+Description:
+ DEPRECATED, WILL BE REMOVED SOON: please use asus-armoury
+ Enable the external GPU paired with ROG X-Flow laptops.
+ Toggling this setting will also trigger ACPI to disable the dGPU:
+
+ * 0 - Disable,
+ * 1 - Enable
+
+What: /sys/devices/platform/<platform>/panel_od
+Date: Aug 2022
+KernelVersion: 5.17
+Contact: "Luke Jones" <luke@ljones.dev>
+Description:
+ DEPRECATED, WILL BE REMOVED SOON: please use asus-armoury
+ Enable an LCD response-time boost to reduce or remove ghosting:
+ * 0 - Disable,
+ * 1 - Enable
+
+What: /sys/devices/platform/<platform>/charge_mode
+Date: Jun 2023
+KernelVersion: 6.5
+Contact: "Luke Jones" <luke@ljones.dev>
+Description:
+ DEPRECATED, WILL BE REMOVED SOON: please use asus-armoury
+ Get the current charging mode being used:
+ * 1 - Barrel connected charger,
+ * 2 - USB-C charging
+ * 3 - Both connected, barrel used for charging
+
+What: /sys/devices/platform/<platform>/egpu_connected
+Date: Jun 2023
+KernelVersion: 6.5
+Contact: "Luke Jones" <luke@ljones.dev>
+Description:
+ DEPRECATED, WILL BE REMOVED SOON: please use asus-armoury
+ Show if the egpu (XG Mobile) is correctly connected:
+ * 0 - False,
+ * 1 - True
+
+What: /sys/devices/platform/<platform>/mini_led_mode
+Date: Jun 2023
+KernelVersion: 6.5
+Contact: "Luke Jones" <luke@ljones.dev>
+Description:
+ DEPRECATED, WILL BE REMOVED SOON: please use asus-armoury
+ Change the mini-LED mode:
+ * 0 - Single-zone,
+ * 1 - Multi-zone
+ * 2 - Multi-zone strong (available on newer generation mini-led)
+
+What: /sys/devices/platform/<platform>/available_mini_led_mode
+Date: Apr 2024
+KernelVersion: 6.10
+Contact: "Luke Jones" <luke@ljones.dev>
+Description:
+ DEPRECATED, WILL BE REMOVED SOON: please use asus-armoury
+ List the available mini-led modes.
+
+What: /sys/devices/platform/<platform>/ppt_pl1_spl
+Date: Jun 2023
+KernelVersion: 6.5
+Contact: "Luke Jones" <luke@ljones.dev>
+Description:
+ DEPRECATED, WILL BE REMOVED SOON: please use asus-armoury
+ Set the Package Power Target total of CPU: PL1 on Intel, SPL on AMD.
+ Shown on Intel+Nvidia or AMD+Nvidia based systems:
+
+ * min=5, max=250
+
+What: /sys/devices/platform/<platform>/ppt_pl2_sppt
+Date: Jun 2023
+KernelVersion: 6.5
+Contact: "Luke Jones" <luke@ljones.dev>
+Description:
+ DEPRECATED, WILL BE REMOVED SOON: please use asus-armoury
+ Set the Slow Package Power Tracking Limit of CPU: PL2 on Intel, SPPT,
+ on AMD. Shown on Intel+Nvidia or AMD+Nvidia based systems:
+
+ * min=5, max=250
+
+What: /sys/devices/platform/<platform>/ppt_fppt
+Date: Jun 2023
+KernelVersion: 6.5
+Contact: "Luke Jones" <luke@ljones.dev>
+Description:
+ DEPRECATED, WILL BE REMOVED SOON: please use asus-armoury
+ Set the Fast Package Power Tracking Limit of CPU. AMD+Nvidia only:
+ * min=5, max=250
+
+What: /sys/devices/platform/<platform>/ppt_apu_sppt
+Date: Jun 2023
+KernelVersion: 6.5
+Contact: "Luke Jones" <luke@ljones.dev>
+Description:
+ DEPRECATED, WILL BE REMOVED SOON: please use asus-armoury
+ Set the APU SPPT limit. Shown on full AMD systems only:
+ * min=5, max=130
+
+What: /sys/devices/platform/<platform>/ppt_platform_sppt
+Date: Jun 2023
+KernelVersion: 6.5
+Contact: "Luke Jones" <luke@ljones.dev>
+Description:
+ DEPRECATED, WILL BE REMOVED SOON: please use asus-armoury
+ Set the platform SPPT limit. Shown on full AMD systems only:
+ * min=5, max=130
+
+What: /sys/devices/platform/<platform>/nv_dynamic_boost
+Date: Jun 2023
+KernelVersion: 6.5
+Contact: "Luke Jones" <luke@ljones.dev>
+Description:
+ DEPRECATED, WILL BE REMOVED SOON: please use asus-armoury
+ Set the dynamic boost limit of the Nvidia dGPU:
+ * min=5, max=25
+
+What: /sys/devices/platform/<platform>/nv_temp_target
+Date: Jun 2023
+KernelVersion: 6.5
+Contact: "Luke Jones" <luke@ljones.dev>
+Description:
+ DEPRECATED, WILL BE REMOVED SOON: please use asus-armoury
+ Set the target temperature limit of the Nvidia dGPU:
+ * min=75, max=87
+
+What: /sys/devices/platform/<platform>/boot_sound
+Date: Apr 2024
+KernelVersion: 6.10
+Contact: "Luke Jones" <luke@ljones.dev>
+Description:
+ DEPRECATED, WILL BE REMOVED SOON: please use asus-armoury
+ Set if the BIOS POST sound is played on boot.
+ * 0 - False,
+ * 1 - True
+
+What: /sys/devices/platform/<platform>/mcu_powersave
+Date: Apr 2024
+KernelVersion: 6.10
+Contact: "Luke Jones" <luke@ljones.dev>
+Description:
+ DEPRECATED, WILL BE REMOVED SOON: please use asus-armoury
+ Set if the MCU can go in to low-power mode on system sleep
+ * 0 - False,
+ * 1 - True
diff --git a/Documentation/ABI/testing/sysfs-platform-ayaneo-ec b/Documentation/ABI/testing/sysfs-platform-ayaneo-ec
new file mode 100644
index 000000000000..4cffbf5fc7ca
--- /dev/null
+++ b/Documentation/ABI/testing/sysfs-platform-ayaneo-ec
@@ -0,0 +1,19 @@
+What: /sys/devices/platform/ayaneo-ec/controller_power
+Date: Nov 2025
+KernelVersion: 6.19
+Contact: "Antheas Kapenekakis" <lkml@antheas.dev>
+Description:
+ Current controller power state. Allows turning on and off
+ the controller power (e.g. for power savings). Write 1 to
+ turn on, 0 to turn off. File is readable and writable.
+
+What: /sys/devices/platform/ayaneo-ec/controller_modules
+Date: Nov 2025
+KernelVersion: 6.19
+Contact: "Antheas Kapenekakis" <lkml@antheas.dev>
+Description:
+ Shows which controller modules are currently connected to
+ the device. Possible values are "left", "right" and "both".
+ File is read-only. The Windows software for this device
+ will only set controller power to 1 if both module sides
+ are connected (i.e. this file returns "both").
diff --git a/Documentation/ABI/testing/sysfs-platform-brcmstb-memc b/Documentation/ABI/testing/sysfs-platform-brcmstb-memc
new file mode 100644
index 000000000000..2f2b750ac2fd
--- /dev/null
+++ b/Documentation/ABI/testing/sysfs-platform-brcmstb-memc
@@ -0,0 +1,15 @@
+What: /sys/bus/platform/devices/*/srpd
+Date: July 2022
+KernelVersion: 5.21
+Contact: Florian Fainelli <f.fainelli@gmail.com>
+Description:
+ Self Refresh Power Down (SRPD) inactivity timeout counted in
+ internal DDR controller clock cycles. Possible values range
+ from 0 (disable inactivity timeout) to 65535 (0xffff).
+
+What: /sys/bus/platform/devices/*/frequency
+Date: July 2022
+KernelVersion: 5.21
+Contact: Florian Fainelli <f.fainelli@gmail.com>
+Description:
+ DDR PHY frequency in Hz.
diff --git a/Documentation/ABI/testing/sysfs-platform-chipidea-usb2 b/Documentation/ABI/testing/sysfs-platform-chipidea-usb2
index b0f4684a83fe..b9f7d924f28a 100644
--- a/Documentation/ABI/testing/sysfs-platform-chipidea-usb2
+++ b/Documentation/ABI/testing/sysfs-platform-chipidea-usb2
@@ -2,8 +2,8 @@ What: /sys/bus/platform/devices/ci_hdrc.0/role
Date: Mar 2017
Contact: Peter Chen <peter.chen@nxp.com>
Description:
- It returns string "gadget" or "host" when read it, it indicates
- current controller role.
+ When read, it returns string "gadget" or "host", indicating
+ the current controller role.
- It will do role switch when write "gadget" or "host" to it.
+ It will do role switch when "gadget" or "host" is written to it.
Only controller at dual-role configuration supports writing.
diff --git a/Documentation/ABI/testing/sysfs-platform-dell-laptop b/Documentation/ABI/testing/sysfs-platform-dell-laptop
index 82bcfe9df66e..701529653283 100644
--- a/Documentation/ABI/testing/sysfs-platform-dell-laptop
+++ b/Documentation/ABI/testing/sysfs-platform-dell-laptop
@@ -15,7 +15,7 @@ KernelVersion: 3.19
Contact: Gabriele Mazzotta <gabriele.mzt@gmail.com>,
Pali Rohár <pali@kernel.org>
Description:
- This file allows to specifiy the on/off threshold value,
+ This file allows to specify the on/off threshold value,
as reported by the ambient light sensor.
What: /sys/class/leds/dell::kbd_backlight/start_triggers
diff --git a/Documentation/ABI/testing/sysfs-platform-dell-privacy-wmi b/Documentation/ABI/testing/sysfs-platform-dell-privacy-wmi
index 1f1f274a6979..b4da7b2ea0ca 100644
--- a/Documentation/ABI/testing/sysfs-platform-dell-privacy-wmi
+++ b/Documentation/ABI/testing/sysfs-platform-dell-privacy-wmi
@@ -1,4 +1,4 @@
-What: /sys/bus/wmi/devices/6932965F-1671-4CEB-B988-D3AB0A901919/dell_privacy_supported_type
+What: /sys/bus/wmi/devices/6932965F-1671-4CEB-B988-D3AB0A901919[-X]/dell_privacy_supported_type
Date: Apr 2021
KernelVersion: 5.13
Contact: "<perry.yuan@dell.com>"
@@ -29,12 +29,12 @@ Description:
For example to check which privacy devices are supported::
- # cat /sys/bus/wmi/drivers/dell-privacy/6932965F-1671-4CEB-B988-D3AB0A901919/dell_privacy_supported_type
+ # cat /sys/bus/wmi/drivers/dell-privacy/6932965F-1671-4CEB-B988-D3AB0A901919*/dell_privacy_supported_type
[Microphone Mute] [supported]
[Camera Shutter] [supported]
[ePrivacy Screen] [unsupported]
-What: /sys/bus/wmi/devices/6932965F-1671-4CEB-B988-D3AB0A901919/dell_privacy_current_state
+What: /sys/bus/wmi/devices/6932965F-1671-4CEB-B988-D3AB0A901919[-X]/dell_privacy_current_state
Date: Apr 2021
KernelVersion: 5.13
Contact: "<perry.yuan@dell.com>"
@@ -66,6 +66,6 @@ Description:
For example to check all supported current privacy device states::
- # cat /sys/bus/wmi/drivers/dell-privacy/6932965F-1671-4CEB-B988-D3AB0A901919/dell_privacy_current_state
+ # cat /sys/bus/wmi/drivers/dell-privacy/6932965F-1671-4CEB-B988-D3AB0A901919*/dell_privacy_current_state
[Microphone] [unmuted]
[Camera Shutter] [unmuted]
diff --git a/Documentation/ABI/testing/sysfs-platform-dell-wmi-ddv b/Documentation/ABI/testing/sysfs-platform-dell-wmi-ddv
new file mode 100644
index 000000000000..a9d39d9e8865
--- /dev/null
+++ b/Documentation/ABI/testing/sysfs-platform-dell-wmi-ddv
@@ -0,0 +1,9 @@
+What: /sys/class/power_supply/<battery_name>/eppid
+Date: September 2022
+KernelVersion: 6.1
+Contact: Armin Wolf <W_Armin@gmx.de>
+Description:
+ Reports the Dell ePPID (electronic Piece Part Identification)
+ of the ACPI battery.
+
+ See Documentation/wmi/devices/dell-wmi-ddv.rst for details.
diff --git a/Documentation/ABI/testing/sysfs-platform-dfl-fme b/Documentation/ABI/testing/sysfs-platform-dfl-fme
index d6ab34e81b9b..2d5b78d2cf51 100644
--- a/Documentation/ABI/testing/sysfs-platform-dfl-fme
+++ b/Documentation/ABI/testing/sysfs-platform-dfl-fme
@@ -90,7 +90,7 @@ KernelVersion: 5.4
Contact: Wu Hao <hao.wu@intel.com>
Description: Read-Write. Read this file to get errors detected on FME.
Write this file to clear errors logged in fme_errors. Write
- fials with -EINVAL if input parsing fails or input error code
+ fails with -EINVAL if input parsing fails or input error code
doesn't match.
What: /sys/bus/platform/devices/dfl-fme.0/errors/first_error
diff --git a/Documentation/ABI/testing/sysfs-platform-hidma b/Documentation/ABI/testing/sysfs-platform-hidma
index fca40a54df59..a80aeda85ef6 100644
--- a/Documentation/ABI/testing/sysfs-platform-hidma
+++ b/Documentation/ABI/testing/sysfs-platform-hidma
@@ -2,7 +2,7 @@ What: /sys/devices/platform/hidma-*/chid
/sys/devices/platform/QCOM8061:*/chid
Date: Dec 2015
KernelVersion: 4.4
-Contact: "Sinan Kaya <okaya@codeaurora.org>"
+Contact: "Sinan Kaya <okaya@kernel.org>"
Description:
Contains the ID of the channel within the HIDMA instance.
It is used to associate a given HIDMA channel with the
diff --git a/Documentation/ABI/testing/sysfs-platform-hidma-mgmt b/Documentation/ABI/testing/sysfs-platform-hidma-mgmt
index 3b6c5c9eabdc..0373745b4e18 100644
--- a/Documentation/ABI/testing/sysfs-platform-hidma-mgmt
+++ b/Documentation/ABI/testing/sysfs-platform-hidma-mgmt
@@ -2,7 +2,7 @@ What: /sys/devices/platform/hidma-mgmt*/chanops/chan*/priority
/sys/devices/platform/QCOM8060:*/chanops/chan*/priority
Date: Nov 2015
KernelVersion: 4.4
-Contact: "Sinan Kaya <okaya@codeaurora.org>"
+Contact: "Sinan Kaya <okaya@kernel.org>"
Description:
Contains either 0 or 1 and indicates if the DMA channel is a
low priority (0) or high priority (1) channel.
@@ -11,7 +11,7 @@ What: /sys/devices/platform/hidma-mgmt*/chanops/chan*/weight
/sys/devices/platform/QCOM8060:*/chanops/chan*/weight
Date: Nov 2015
KernelVersion: 4.4
-Contact: "Sinan Kaya <okaya@codeaurora.org>"
+Contact: "Sinan Kaya <okaya@kernel.org>"
Description:
Contains 0..15 and indicates the weight of the channel among
equal priority channels during round robin scheduling.
@@ -20,7 +20,7 @@ What: /sys/devices/platform/hidma-mgmt*/chreset_timeout_cycles
/sys/devices/platform/QCOM8060:*/chreset_timeout_cycles
Date: Nov 2015
KernelVersion: 4.4
-Contact: "Sinan Kaya <okaya@codeaurora.org>"
+Contact: "Sinan Kaya <okaya@kernel.org>"
Description:
Contains the platform specific cycle value to wait after a
reset command is issued. If the value is chosen too short,
@@ -32,7 +32,7 @@ What: /sys/devices/platform/hidma-mgmt*/dma_channels
/sys/devices/platform/QCOM8060:*/dma_channels
Date: Nov 2015
KernelVersion: 4.4
-Contact: "Sinan Kaya <okaya@codeaurora.org>"
+Contact: "Sinan Kaya <okaya@kernel.org>"
Description:
Contains the number of dma channels supported by one instance
of HIDMA hardware. The value may change from chip to chip.
@@ -41,7 +41,7 @@ What: /sys/devices/platform/hidma-mgmt*/hw_version_major
/sys/devices/platform/QCOM8060:*/hw_version_major
Date: Nov 2015
KernelVersion: 4.4
-Contact: "Sinan Kaya <okaya@codeaurora.org>"
+Contact: "Sinan Kaya <okaya@kernel.org>"
Description:
Version number major for the hardware.
@@ -49,7 +49,7 @@ What: /sys/devices/platform/hidma-mgmt*/hw_version_minor
/sys/devices/platform/QCOM8060:*/hw_version_minor
Date: Nov 2015
KernelVersion: 4.4
-Contact: "Sinan Kaya <okaya@codeaurora.org>"
+Contact: "Sinan Kaya <okaya@kernel.org>"
Description:
Version number minor for the hardware.
@@ -57,7 +57,7 @@ What: /sys/devices/platform/hidma-mgmt*/max_rd_xactions
/sys/devices/platform/QCOM8060:*/max_rd_xactions
Date: Nov 2015
KernelVersion: 4.4
-Contact: "Sinan Kaya <okaya@codeaurora.org>"
+Contact: "Sinan Kaya <okaya@kernel.org>"
Description:
Contains a value between 0 and 31. Maximum number of
read transactions that can be issued back to back.
@@ -69,7 +69,7 @@ What: /sys/devices/platform/hidma-mgmt*/max_read_request
/sys/devices/platform/QCOM8060:*/max_read_request
Date: Nov 2015
KernelVersion: 4.4
-Contact: "Sinan Kaya <okaya@codeaurora.org>"
+Contact: "Sinan Kaya <okaya@kernel.org>"
Description:
Size of each read request. The value needs to be a power
of two and can be between 128 and 1024.
@@ -78,7 +78,7 @@ What: /sys/devices/platform/hidma-mgmt*/max_wr_xactions
/sys/devices/platform/QCOM8060:*/max_wr_xactions
Date: Nov 2015
KernelVersion: 4.4
-Contact: "Sinan Kaya <okaya@codeaurora.org>"
+Contact: "Sinan Kaya <okaya@kernel.org>"
Description:
Contains a value between 0 and 31. Maximum number of
write transactions that can be issued back to back.
@@ -91,7 +91,7 @@ What: /sys/devices/platform/hidma-mgmt*/max_write_request
/sys/devices/platform/QCOM8060:*/max_write_request
Date: Nov 2015
KernelVersion: 4.4
-Contact: "Sinan Kaya <okaya@codeaurora.org>"
+Contact: "Sinan Kaya <okaya@kernel.org>"
Description:
Size of each write request. The value needs to be a power
of two and can be between 128 and 1024.
diff --git a/Documentation/ABI/testing/sysfs-platform-ideapad-laptop b/Documentation/ABI/testing/sysfs-platform-ideapad-laptop
index 4989ab266682..5ec0dee9e707 100644
--- a/Documentation/ABI/testing/sysfs-platform-ideapad-laptop
+++ b/Documentation/ABI/testing/sysfs-platform-ideapad-laptop
@@ -27,15 +27,6 @@ Description:
* 1 -> Switched On
* 0 -> Switched Off
-What: /sys/bus/platform/devices/VPC2004:*/conservation_mode
-Date: Aug 2017
-KernelVersion: 4.14
-Contact: platform-driver-x86@vger.kernel.org
-Description:
- Controls whether the conservation mode is enabled or not.
- This feature limits the maximum battery charge percentage to
- around 50-60% in order to prolong the lifetime of the battery.
-
What: /sys/bus/platform/devices/VPC2004:*/fn_lock
Date: May 2018
KernelVersion: 4.18
diff --git a/Documentation/ABI/testing/sysfs-platform-intel-ifs b/Documentation/ABI/testing/sysfs-platform-intel-ifs
new file mode 100644
index 000000000000..41b4d5b1e21c
--- /dev/null
+++ b/Documentation/ABI/testing/sysfs-platform-intel-ifs
@@ -0,0 +1,52 @@
+Device instance to test mapping
+intel_ifs_0 -> Scan Test
+intel_ifs_1 -> Array BIST test
+
+What: /sys/devices/virtual/misc/intel_ifs_<N>/run_test
+Date: Nov 16 2022
+KernelVersion: 6.2
+Contact: "Jithu Joseph" <jithu.joseph@intel.com>
+Description: Write <cpu#> to trigger IFS test for one online core.
+ Note that the test is per core. The cpu# can be
+ for any thread on the core. Running on one thread
+ completes the test for the core containing that thread.
+ Example: to test the core containing cpu5: echo 5 >
+ /sys/devices/virtual/misc/intel_ifs_<N>/run_test
+Devices: all
+
+What: /sys/devices/virtual/misc/intel_ifs_<N>/status
+Date: Nov 16 2022
+KernelVersion: 6.2
+Contact: "Jithu Joseph" <jithu.joseph@intel.com>
+Description: The status of the last test. It can be one of "pass", "fail"
+ or "untested".
+Devices: all
+
+What: /sys/devices/virtual/misc/intel_ifs_<N>/details
+Date: Nov 16 2022
+KernelVersion: 6.2
+Contact: "Jithu Joseph" <jithu.joseph@intel.com>
+Description: Additional information regarding the last test. The details file reports
+ the hex value of the STATUS MSR for this test. Note that the error_code field
+ may contain driver defined software code not defined in the Intel SDM.
+Devices: all
+
+What: /sys/devices/virtual/misc/intel_ifs_<N>/image_version
+Date: Nov 16 2022
+KernelVersion: 6.2
+Contact: "Jithu Joseph" <jithu.joseph@intel.com>
+Description: Version (hexadecimal) of loaded IFS test image. If no test image
+ is loaded reports "none". Only present for device instances where a test image
+ is applicable.
+Devices: intel_ifs_0
+
+What: /sys/devices/virtual/misc/intel_ifs_<N>/current_batch
+Date: Nov 16 2022
+KernelVersion: 6.2
+Contact: "Jithu Joseph" <jithu.joseph@intel.com>
+Description: Write a number less than or equal to 0xff to load an IFS test image.
+ The number written treated as the 2 digit suffix in the following file name:
+ /lib/firmware/intel/ifs_<N>/ff-mm-ss-02x.scan
+ Reading the file will provide the suffix of the currently loaded IFS test image.
+ This file is present only for device instances where a test image is applicable.
+Devices: intel_ifs_0
diff --git a/Documentation/ABI/testing/sysfs-platform-intel-wmi-sbl-fw-update b/Documentation/ABI/testing/sysfs-platform-intel-wmi-sbl-fw-update
index 02ae1e9bbfc8..7ffd1579b8f7 100644
--- a/Documentation/ABI/testing/sysfs-platform-intel-wmi-sbl-fw-update
+++ b/Documentation/ABI/testing/sysfs-platform-intel-wmi-sbl-fw-update
@@ -1,4 +1,4 @@
-What: /sys/bus/wmi/devices/44FADEB1-B204-40F2-8581-394BBDC1B651/firmware_update_request
+What: /sys/bus/wmi/devices/44FADEB1-B204-40F2-8581-394BBDC1B651[-X]/firmware_update_request
Date: April 2020
KernelVersion: 5.7
Contact: "Jithu Joseph" <jithu.joseph@intel.com>
diff --git a/Documentation/ABI/testing/sysfs-platform-intel-wmi-thunderbolt b/Documentation/ABI/testing/sysfs-platform-intel-wmi-thunderbolt
index fd3a7ec79760..10ef1282c9d2 100644
--- a/Documentation/ABI/testing/sysfs-platform-intel-wmi-thunderbolt
+++ b/Documentation/ABI/testing/sysfs-platform-intel-wmi-thunderbolt
@@ -1,4 +1,4 @@
-What: /sys/devices/platform/<platform>/force_power
+What: /sys/bus/wmi/devices/86CCFD48-205E-4A77-9C48-2021CBEDE341[-X]/force_power
Date: September 2017
KernelVersion: 4.15
Contact: "Mario Limonciello" <mario.limonciello@outlook.com>
diff --git a/Documentation/ABI/testing/sysfs-platform-kim b/Documentation/ABI/testing/sysfs-platform-kim
index 6a52d6d2b601..0a38caa62a32 100644
--- a/Documentation/ABI/testing/sysfs-platform-kim
+++ b/Documentation/ABI/testing/sysfs-platform-kim
@@ -9,7 +9,7 @@ Description:
The device name flows down to architecture specific board
initialization file from the ATAGS bootloader
firmware. The name exposed is read from the user-space
- dameon and opens the device when install is requested.
+ daemon and opens the device when install is requested.
What: /sys/devices/platform/kim/baud_rate
Date: January 2010
diff --git a/Documentation/ABI/testing/sysfs-platform-lg-laptop b/Documentation/ABI/testing/sysfs-platform-lg-laptop
index cf47749b19df..0570cd524d0e 100644
--- a/Documentation/ABI/testing/sysfs-platform-lg-laptop
+++ b/Documentation/ABI/testing/sysfs-platform-lg-laptop
@@ -17,6 +17,7 @@ Date: October 2018
KernelVersion: 4.20
Contact: "Matan Ziv-Av <matan@svgalib.org>
Description:
+ Deprecated use /sys/class/power_supply/CMB0/charge_control_end_threshold
Maximal battery charge level. Accepted values are 80 or 100.
What: /sys/devices/platform/lg-laptop/fan_mode
diff --git a/Documentation/ABI/testing/sysfs-platform-mellanox-bootctl b/Documentation/ABI/testing/sysfs-platform-mellanox-bootctl
index e79ca22e2f45..09f783fa0a53 100644
--- a/Documentation/ABI/testing/sysfs-platform-mellanox-bootctl
+++ b/Documentation/ABI/testing/sysfs-platform-mellanox-bootctl
@@ -68,3 +68,95 @@ Description:
Wasted burnt and invalid
Invalid not burnt but marked as valid (error state).
======= ===============================================
+
+What: /sys/bus/platform/devices/MLNXBF04:00/bootfifo
+Date: Apr 2023
+KernelVersion: 6.4
+Contact: "Liming Sun <limings@nvidia.com>"
+Description:
+ The file used to access the BlueField boot fifo.
+
+What: /sys/bus/platform/devices/MLNXBF04:00/rsh_log
+Date: May 2023
+KernelVersion: 6.4
+Contact: "Liming Sun <limings@nvidia.com>"
+Description:
+ The file used to write BlueField boot log with the format
+ "[INFO|WARN|ERR|ASSERT ]<msg>". Log level 'INFO' is used by
+ default if not specified.
+
+What: /sys/bus/platform/devices/MLNXBF04:00/oob_mac
+Date: August 2023
+KernelVersion: 6.5
+Contact: "David Thompson <davthompson@nvidia.com>"
+Description:
+ The "oob_mac" sysfs attribute holds the MAC address for
+ the out-of-band 1Gbps Ethernet port. This MAC address is
+ provided on a board-level label.
+
+What: /sys/bus/platform/devices/MLNXBF04:00/opn
+Date: August 2023
+KernelVersion: 6.5
+Contact: "David Thompson <davthompson@nvidia.com>"
+Description:
+ The "opn" sysfs attribute holds the board's part number.
+ This value is provided on a board-level label.
+
+What: /sys/bus/platform/devices/MLNXBF04:00/sku
+Date: August 2023
+KernelVersion: 6.5
+Contact: "David Thompson <davthompson@nvidia.com>"
+Description:
+ The "sku" sysfs attribute holds the board's SKU number.
+ This value is provided on a board-level label.
+
+What: /sys/bus/platform/devices/MLNXBF04:00/modl
+Date: August 2023
+KernelVersion: 6.5
+Contact: "David Thompson <davthompson@nvidia.com>"
+Description:
+ The "modl" sysfs attribute holds the board's model number.
+ This value is provided on a board-level label.
+
+What: /sys/bus/platform/devices/MLNXBF04:00/sn
+Date: August 2023
+KernelVersion: 6.5
+Contact: "David Thompson <davthompson@nvidia.com>"
+Description:
+ The "sn" sysfs attribute holds the board's serial number.
+ This value is provided on a board-level label.
+
+What: /sys/bus/platform/devices/MLNXBF04:00/uuid
+Date: August 2023
+KernelVersion: 6.5
+Contact: "David Thompson <davthompson@nvidia.com>"
+Description:
+ The "uuid" sysfs attribute holds the board's UUID.
+ This value is provided by the manufacturing team.
+
+What: /sys/bus/platform/devices/MLNXBF04:00/rev
+Date: August 2023
+KernelVersion: 6.5
+Contact: "David Thompson <davthompson@nvidia.com>"
+Description:
+ The "rev" sysfs attribute holds the board's revision.
+ This value is provided on a board-level label.
+
+What: /sys/bus/platform/devices/MLNXBF04:00/mfg_lock
+Date: August 2023
+KernelVersion: 6.5
+Contact: "David Thompson <davthompson@nvidia.com>"
+Description:
+ The "mfg_lock" sysfs attribute is write-only.
+ A successful write to this attribute will latch the
+ board-level attributes into EEPROM, making them read-only.
+
+What: /sys/bus/platform/devices/MLNXBF04:00/rtc_battery
+Date: June 2025
+KernelVersion: 6.15
+Contact: "Xiangrong Li <xiangrongl@nvidia.com>"
+Description:
+ The "rtc_battery" sysfs attribute is read-only.
+ A successful read from this attribute returns the status of
+ the board's RTC battery. The RTC battery status register is
+ also cleared upon successful read operation.
diff --git a/Documentation/ABI/testing/sysfs-platform-mellanox-pmc b/Documentation/ABI/testing/sysfs-platform-mellanox-pmc
new file mode 100644
index 000000000000..29b3f9c58e00
--- /dev/null
+++ b/Documentation/ABI/testing/sysfs-platform-mellanox-pmc
@@ -0,0 +1,64 @@
+HID Driver Description
+MLNXBFD0 mlxbf-pmc Performance counters (BlueField-1)
+MLNXBFD1 mlxbf-pmc Performance counters (BlueField-2)
+MLNXBFD2 mlxbf-pmc Performance counters (BlueField-3)
+
+What: /sys/bus/platform/devices/<HID>/hwmon/hwmonX/<block>/event_list
+Date: Dec 2020
+KernelVersion: 5.10
+Contact: "Shravan Kumar Ramani <shravankr@nvidia.com>"
+Description:
+ List of events supported by the counters in the specific block.
+ It is used to extract the event number or ID associated with
+ each event.
+
+What: /sys/bus/platform/devices/<HID>/hwmon/hwmonX/<block>/event<N>
+Date: Dec 2020
+KernelVersion: 5.10
+Contact: "Shravan Kumar Ramani <shravankr@nvidia.com>"
+Description:
+ Event monitored by corresponding counter. This is used to
+ program or read back the event that should be or is currently
+ being monitored by counter<N>.
+
+What: /sys/bus/platform/devices/<HID>/hwmon/hwmonX/<block>/counter<N>
+Date: Dec 2020
+KernelVersion: 5.10
+Contact: "Shravan Kumar Ramani <shravankr@nvidia.com>"
+Description:
+ Counter value of the event being monitored. This is used to
+ read the counter value of the event which was programmed using
+ event<N>. This is also used to clear or reset the counter value
+ by writing 0 to the counter sysfs.
+
+What: /sys/bus/platform/devices/<HID>/hwmon/hwmonX/<block>/enable
+Date: Dec 2020
+KernelVersion: 5.10
+Contact: "Shravan Kumar Ramani <shravankr@nvidia.com>"
+Description:
+ Start or stop counters. This is used to start the counters
+ for monitoring the programmed events and also to stop the
+ counters after the desired duration. Writing value 1 will
+ start all the counters in the block, and writing 0 will
+ stop all the counters together.
+
+What: /sys/bus/platform/devices/<HID>/hwmon/hwmonX/<block>/<reg>
+Date: Dec 2020
+KernelVersion: 5.10
+Contact: "Shravan Kumar Ramani <shravankr@nvidia.com>"
+Description:
+ Value of register. This is used to read or reset the registers
+ where various performance statistics are counted for each block.
+ Writing 0 to the sysfs will clear the counter, writing any other
+ value is not allowed.
+
+What: /sys/bus/platform/devices/<HID>/hwmon/hwmonX/<block>/count_clock
+Date: Mar 2025
+KernelVersion: 6.14
+Contact: "Shravan Kumar Ramani <shravankr@nvidia.com>"
+Description:
+ Use a counter for counting cycles. This is used to repurpose/dedicate
+ any of the counters in the block to counting cycles. Each counter is
+ represented by a bit (bit 0 for counter0, bit1 for counter1 and so on)
+ and setting the corresponding bit will reserve that specific counter
+ for counting cycles and override the event<N> setting.
diff --git a/Documentation/ABI/testing/sysfs-platform-oxp b/Documentation/ABI/testing/sysfs-platform-oxp
new file mode 100644
index 000000000000..b3f39fc21dfa
--- /dev/null
+++ b/Documentation/ABI/testing/sysfs-platform-oxp
@@ -0,0 +1,25 @@
+What: /sys/devices/platform/<platform>/tt_toggle
+Date: Jun 2023
+KernelVersion: 6.5
+Contact: "Antheas Kapenekakis" <lkml@antheas.dev>
+Description:
+ Takeover TDP controls from the device. OneXPlayer devices have a
+ turbo button that can be used to switch between two TDP modes
+ (usually 15W and 25W). By setting this attribute to 1, this
+ functionality is disabled, handing TDP control over to (Windows)
+ userspace software and the Turbo button turns into a keyboard
+ shortcut over the AT keyboard of the device. In addition,
+ using this setting is a prerequisite for PWM control for most
+ newer models (otherwise it NOOPs).
+
+What: /sys/devices/platform/<platform>/tt_led
+Date: April 2025
+KernelVersion: 6.16
+Contact: "Antheas Kapenekakis" <lkml@antheas.dev>
+Description:
+ Some OneXPlayer devices (e.g., X1 series) feature a little LED
+ nested in the Turbo button. This LED is illuminated when the
+ device is in the higher TDP mode (e.g., 25W). Once tt_toggle
+ is engaged, this LED is left dangling to its last state. This
+ attribute allows userspace to control the LED state manually
+ (either with 1 or 0). Only a subset of devices contain this LED.
diff --git a/Documentation/ABI/testing/sysfs-platform-power-on-reason b/Documentation/ABI/testing/sysfs-platform-power-on-reason
new file mode 100644
index 000000000000..c3b29dbc64bf
--- /dev/null
+++ b/Documentation/ABI/testing/sysfs-platform-power-on-reason
@@ -0,0 +1,12 @@
+What: /sys/devices/platform/.../power_on_reason
+Date: June 2023
+KernelVersion: 6.5
+Contact: Kamel Bouhara <kamel.bouhara@bootlin.com>
+Description: Shows system power on reason. The following strings/reasons can
+ be read (the list can be extended):
+ "regular power-up", "RTC wakeup", "watchdog timeout",
+ "software reset", "reset button action", "CPU clock failure",
+ "crystal oscillator failure", "brown-out reset",
+ "unknown reason".
+
+ The file is read only.
diff --git a/Documentation/ABI/testing/sysfs-platform-silicom b/Documentation/ABI/testing/sysfs-platform-silicom
new file mode 100644
index 000000000000..4d1cc5bdbcc5
--- /dev/null
+++ b/Documentation/ABI/testing/sysfs-platform-silicom
@@ -0,0 +1,30 @@
+What: /sys/devices/platform/silicom-platform/uc_version
+Date: November 2023
+KernelVersion: 6.7
+Contact: Henry Shi <henrys@silicom-usa.com>
+Description:
+ This file allows to read microcontroller firmware
+ version of current platform.
+
+What: /sys/devices/platform/silicom-platform/power_cycle
+Date: November 2023
+KernelVersion: 6.7
+Contact: Henry Shi <henrys@silicom-usa.com>
+Description:
+ This file allow user to power cycle the platform.
+ Default value is 0; when set to 1, it powers down
+ the platform, waits 5 seconds, then powers on the
+ device. It returns to default value after power cycle.
+
+ 0 - default value.
+
+What: /sys/devices/platform/silicom-platform/efuse_status
+Date: November 2023
+KernelVersion: 6.7
+Contact: Henry Shi <henrys@silicom-usa.com>
+Description:
+ This file is read only. It returns the current
+ OTP status:
+
+ 0 - not programmed.
+ 1 - programmed.
diff --git a/Documentation/ABI/testing/sysfs-platform-sst-atom b/Documentation/ABI/testing/sysfs-platform-sst-atom
index 0154b0fba759..4bb2e6135c2e 100644
--- a/Documentation/ABI/testing/sysfs-platform-sst-atom
+++ b/Documentation/ABI/testing/sysfs-platform-sst-atom
@@ -4,7 +4,7 @@ KernelVersion: 4.10
Contact: "Sebastien Guiriec" <sebastien.guiriec@intel.com>
Description:
LPE Firmware version for SST driver on all atom
- plaforms (BYT/CHT/Merrifield/BSW).
+ platforms (BYT/CHT/Merrifield/BSW).
If the FW has never been loaded it will display::
"FW not yet loaded"
diff --git a/Documentation/ABI/testing/sysfs-platform_profile b/Documentation/ABI/testing/sysfs-platform_profile
index baf1d125f9f8..125324ab53a9 100644
--- a/Documentation/ABI/testing/sysfs-platform_profile
+++ b/Documentation/ABI/testing/sysfs-platform_profile
@@ -33,3 +33,8 @@ Description: Reading this file gives the current selected profile for this
source such as e.g. a hotkey triggered profile change handled
either directly by the embedded-controller or fully handled
inside the kernel.
+
+ This file may also emit the string 'custom' to indicate
+ that multiple platform profiles drivers are in use but
+ have different values. This string can not be written to
+ this interface and is solely for informational purposes.
diff --git a/Documentation/ABI/testing/sysfs-power b/Documentation/ABI/testing/sysfs-power
index 90ec4987074b..d38da077905a 100644
--- a/Documentation/ABI/testing/sysfs-power
+++ b/Documentation/ABI/testing/sysfs-power
@@ -1,6 +1,6 @@
What: /sys/power/
Date: August 2006
-Contact: Rafael J. Wysocki <rjw@rjwysocki.net>
+Contact: Rafael J. Wysocki <rafael@kernel.org>
Description:
The /sys/power directory will contain files that will
provide a unified interface to the power management
@@ -8,7 +8,7 @@ Description:
What: /sys/power/state
Date: November 2016
-Contact: Rafael J. Wysocki <rjw@rjwysocki.net>
+Contact: Rafael J. Wysocki <rafael@kernel.org>
Description:
The /sys/power/state file controls system sleep states.
Reading from this file returns the available sleep state
@@ -23,7 +23,7 @@ Description:
What: /sys/power/mem_sleep
Date: November 2016
-Contact: Rafael J. Wysocki <rjw@rjwysocki.net>
+Contact: Rafael J. Wysocki <rafael@kernel.org>
Description:
The /sys/power/mem_sleep file controls the operating mode of
system suspend. Reading from it returns the available modes
@@ -41,7 +41,7 @@ Description:
What: /sys/power/disk
Date: September 2006
-Contact: Rafael J. Wysocki <rjw@rjwysocki.net>
+Contact: Rafael J. Wysocki <rafael@kernel.org>
Description:
The /sys/power/disk file controls the operating mode of the
suspend-to-disk mechanism. Reading from this file returns
@@ -90,7 +90,7 @@ Description:
What: /sys/power/image_size
Date: August 2006
-Contact: Rafael J. Wysocki <rjw@rjwysocki.net>
+Contact: Rafael J. Wysocki <rafael@kernel.org>
Description:
The /sys/power/image_size file controls the size of the image
created by the suspend-to-disk mechanism. It can be written a
@@ -107,7 +107,7 @@ Description:
What: /sys/power/pm_trace
Date: August 2006
-Contact: Rafael J. Wysocki <rjw@rjwysocki.net>
+Contact: Rafael J. Wysocki <rafael@kernel.org>
Description:
The /sys/power/pm_trace file controls the code which saves the
last PM event point in the RTC across reboots, so that you can
@@ -131,7 +131,7 @@ Description:
CAUTION: Using it will cause your machine's real-time (CMOS)
clock to be set to a random invalid time after a resume.
-What; /sys/power/pm_trace_dev_match
+What: /sys/power/pm_trace_dev_match
Date: October 2010
Contact: James Hogan <jhogan@kernel.org>
Description:
@@ -152,11 +152,11 @@ Description:
case further investigation is required to determine which
device is causing the problem. Note that genuine RTC clock
values (such as when pm_trace has not been used), can still
- match a device and output it's name here.
+ match a device and output its name here.
What: /sys/power/pm_async
Date: January 2009
-Contact: Rafael J. Wysocki <rjw@rjwysocki.net>
+Contact: Rafael J. Wysocki <rafael@kernel.org>
Description:
The /sys/power/pm_async file controls the switch allowing the
user space to enable or disable asynchronous suspend and resume
@@ -169,7 +169,7 @@ Description:
What: /sys/power/wakeup_count
Date: July 2010
-Contact: Rafael J. Wysocki <rjw@rjwysocki.net>
+Contact: Rafael J. Wysocki <rafael@kernel.org>
Description:
The /sys/power/wakeup_count file allows user space to put the
system into a sleep state while taking into account the
@@ -184,7 +184,7 @@ Description:
What: /sys/power/reserved_size
Date: May 2011
-Contact: Rafael J. Wysocki <rjw@rjwysocki.net>
+Contact: Rafael J. Wysocki <rafael@kernel.org>
Description:
The /sys/power/reserved_size file allows user space to control
the amount of memory reserved for allocations made by device
@@ -198,7 +198,7 @@ Description:
What: /sys/power/autosleep
Date: April 2012
-Contact: Rafael J. Wysocki <rjw@rjwysocki.net>
+Contact: Rafael J. Wysocki <rafael@kernel.org>
Description:
The /sys/power/autosleep file can be written one of the strings
returned by reads from /sys/power/state. If that happens, a
@@ -215,7 +215,7 @@ Description:
What: /sys/power/wake_lock
Date: February 2012
-Contact: Rafael J. Wysocki <rjw@rjwysocki.net>
+Contact: Rafael J. Wysocki <rafael@kernel.org>
Description:
The /sys/power/wake_lock file allows user space to create
wakeup source objects and activate them on demand (if one of
@@ -242,7 +242,7 @@ Description:
What: /sys/power/wake_unlock
Date: February 2012
-Contact: Rafael J. Wysocki <rjw@rjwysocki.net>
+Contact: Rafael J. Wysocki <rafael@kernel.org>
Description:
The /sys/power/wake_unlock file allows user space to deactivate
wakeup sources created with the help of /sys/power/wake_lock.
@@ -283,7 +283,7 @@ Description:
What: /sys/power/pm_debug_messages
Date: July 2017
-Contact: Rafael J. Wysocki <rjw@rjwysocki.net>
+Contact: Rafael J. Wysocki <rafael@kernel.org>
Description:
The /sys/power/pm_debug_messages file controls the printing
of debug messages from the system suspend/hiberbation
@@ -413,6 +413,35 @@ Description:
The /sys/power/suspend_stats/last_failed_step file contains
the last failed step in the suspend/resume path.
+What: /sys/power/suspend_stats/last_hw_sleep
+Date: June 2023
+Contact: Mario Limonciello <mario.limonciello@amd.com>
+Description:
+ The /sys/power/suspend_stats/last_hw_sleep file
+ contains the duration of time spent in a hardware sleep
+ state in the most recent system suspend-resume cycle.
+ This number is measured in microseconds.
+
+What: /sys/power/suspend_stats/total_hw_sleep
+Date: June 2023
+Contact: Mario Limonciello <mario.limonciello@amd.com>
+Description:
+ The /sys/power/suspend_stats/total_hw_sleep file
+ contains the aggregate of time spent in a hardware sleep
+ state since the kernel was booted. This number
+ is measured in microseconds.
+
+What: /sys/power/suspend_stats/max_hw_sleep
+Date: June 2023
+Contact: Mario Limonciello <mario.limonciello@amd.com>
+Description:
+ The /sys/power/suspend_stats/max_hw_sleep file
+ contains the maximum amount of time that the hardware can
+ report for time spent in a hardware sleep state. When sleep
+ cycles are longer than this time, the values for
+ 'total_hw_sleep' and 'last_hw_sleep' may not be accurate.
+ This number is measured in microseconds.
+
What: /sys/power/sync_on_suspend
Date: October 2019
Contact: Jonas Meurer <jonas@freesources.org>
@@ -425,3 +454,19 @@ Description:
disables it. Reads from the file return the current value.
The default is "1" if the build-time "SUSPEND_SKIP_SYNC" config
flag is unset, or "0" otherwise.
+
+What: /sys/power/hibernate_compression_threads
+Date: October 2025
+Contact: <luoxueqin@kylinos.cn>
+Description:
+ Controls the number of threads used for compression
+ and decompression of hibernation images.
+
+ The value can be adjusted at runtime to balance
+ performance and CPU utilization.
+
+ The change takes effect on the next hibernation or
+ resume operation.
+
+ Minimum value: 1
+ Default value: 3
diff --git a/Documentation/ABI/testing/sysfs-pps-gen b/Documentation/ABI/testing/sysfs-pps-gen
new file mode 100644
index 000000000000..2519207b88fd
--- /dev/null
+++ b/Documentation/ABI/testing/sysfs-pps-gen
@@ -0,0 +1,43 @@
+What: /sys/class/pps-gen/
+Date: February 2025
+KernelVersion: 6.13
+Contact: Rodolfo Giometti <giometti@enneenne.com>
+Description:
+ The /sys/class/pps-gen/ directory contains files and
+ directories that provide a unified interface to the PPS
+ generators.
+
+What: /sys/class/pps-gen/pps-genX/
+Date: February 2025
+KernelVersion: 6.13
+Contact: Rodolfo Giometti <giometti@enneenne.com>
+Description:
+ The /sys/class/pps-gen/pps-genX/ directory is related to X-th
+ PPS generator in the system. Each directory contain files to
+ manage and control its PPS generator.
+
+What: /sys/class/pps-gen/pps-genX/enable
+Date: February 2025
+KernelVersion: 6.13
+Contact: Rodolfo Giometti <giometti@enneenne.com>
+Description:
+ This write-only file enables or disables generation of the
+ PPS signal.
+
+What: /sys/class/pps-gen/pps-genX/system
+Date: February 2025
+KernelVersion: 6.13
+Contact: Rodolfo Giometti <giometti@enneenne.com>
+Description:
+ This read-only file returns "1" if the generator takes the
+ timing from the system clock, while it returns "0" if not
+ (i.e. from a peripheral device clock).
+
+What: /sys/class/pps-gen/pps-genX/time
+Date: February 2025
+KernelVersion: 6.13
+Contact: Rodolfo Giometti <giometti@enneenne.com>
+Description:
+ This read-only file contains the current time stored into the
+ generator clock as two integers representing the current time
+ seconds and nanoseconds.
diff --git a/Documentation/ABI/testing/sysfs-pps-gen-tio b/Documentation/ABI/testing/sysfs-pps-gen-tio
new file mode 100644
index 000000000000..3c34ff17a335
--- /dev/null
+++ b/Documentation/ABI/testing/sysfs-pps-gen-tio
@@ -0,0 +1,6 @@
+What: /sys/class/pps-gen/pps-genx/enable
+Date: April 2025
+KernelVersion: 6.15
+Contact: Subramanian Mohan<subramanian.mohan@intel.com>
+Description:
+ Enable or disable PPS TIO generator output.
diff --git a/Documentation/ABI/testing/sysfs-secvar b/Documentation/ABI/testing/sysfs-secvar
index feebb8c57294..1016967a730f 100644
--- a/Documentation/ABI/testing/sysfs-secvar
+++ b/Documentation/ABI/testing/sysfs-secvar
@@ -18,6 +18,18 @@ Description: A string indicating which backend is in use by the firmware.
This determines the format of the variable and the accepted
format of variable updates.
+ On powernv/OPAL, this value is provided by the OPAL firmware
+ and is expected to be "ibm,edk2-compat-v1".
+
+ On pseries/PLPKS, this is generated by the kernel based on the
+ version number in the SB_VERSION variable in the keystore. The
+ version numbering in the SB_VERSION variable starts from 1. The
+ format string takes the form "ibm,plpks-sb-v<version>" in the
+ case of dynamic key management mode. If the SB_VERSION variable
+ does not exist (or there is an error while reading it), it takes
+ the form "ibm,plpks-sb-v0", indicating that the key management
+ mode is static.
+
What: /sys/firmware/secvar/vars/<variable name>
Date: August 2019
Contact: Nayna Jain <nayna@linux.ibm.com>
@@ -26,6 +38,13 @@ Description: Each secure variable is represented as a directory named as
representation. The data and size can be determined by reading
their respective attribute files.
+ Only secvars relevant to the key management mode are exposed.
+ Only in the dynamic key management mode should the user have
+ access (read and write) to the secure boot secvars db, dbx,
+ grubdb, grubdbx, and sbat. These secvars are not consumed in the
+ static key management mode. PK, trustedcadb and moduledb are the
+ secvars common to both static and dynamic key management modes.
+
What: /sys/firmware/secvar/vars/<variable_name>/size
Date: August 2019
Contact: Nayna Jain <nayna@linux.ibm.com>
@@ -34,7 +53,7 @@ Description: An integer representation of the size of the content of the
What: /sys/firmware/secvar/vars/<variable_name>/data
Date: August 2019
-Contact: Nayna Jain h<nayna@linux.ibm.com>
+Contact: Nayna Jain <nayna@linux.ibm.com>
Description: A read-only file containing the value of the variable. The size
of the file represents the maximum size of the variable data.
@@ -44,3 +63,68 @@ Contact: Nayna Jain <nayna@linux.ibm.com>
Description: A write-only file that is used to submit the new value for the
variable. The size of the file represents the maximum size of
the variable data that can be written.
+
+What: /sys/firmware/secvar/config
+Date: February 2023
+Contact: Nayna Jain <nayna@linux.ibm.com>
+Description: This optional directory contains read-only config attributes as
+ defined by the secure variable implementation. All data is in
+ ASCII format. The directory is only created if the backing
+ implementation provides variables to populate it, which at
+ present is only PLPKS on the pseries platform.
+
+What: /sys/firmware/secvar/config/version
+Date: February 2023
+Contact: Nayna Jain <nayna@linux.ibm.com>
+Description: Config version as reported by the hypervisor in ASCII decimal
+ format.
+
+ Currently only provided by PLPKS on the pseries platform.
+
+What: /sys/firmware/secvar/config/max_object_size
+Date: February 2023
+Contact: Nayna Jain <nayna@linux.ibm.com>
+Description: Maximum allowed size of objects in the keystore in bytes,
+ represented in ASCII decimal format.
+
+ This is not necessarily the same as the max size that can be
+ written to an update file as writes can contain more than
+ object data, you should use the size of the update file for
+ that purpose.
+
+ Currently only provided by PLPKS on the pseries platform.
+
+What: /sys/firmware/secvar/config/total_size
+Date: February 2023
+Contact: Nayna Jain <nayna@linux.ibm.com>
+Description: Total size of the PLPKS in bytes, represented in ASCII decimal
+ format.
+
+ Currently only provided by PLPKS on the pseries platform.
+
+What: /sys/firmware/secvar/config/used_space
+Date: February 2023
+Contact: Nayna Jain <nayna@linux.ibm.com>
+Description: Current space consumed by the key store, in bytes, represented
+ in ASCII decimal format.
+
+ Currently only provided by PLPKS on the pseries platform.
+
+What: /sys/firmware/secvar/config/supported_policies
+Date: February 2023
+Contact: Nayna Jain <nayna@linux.ibm.com>
+Description: Bitmask of supported policy flags by the hypervisor,
+ represented as an 8 byte hexadecimal ASCII string. Consult the
+ hypervisor documentation for what these flags are.
+
+ Currently only provided by PLPKS on the pseries platform.
+
+What: /sys/firmware/secvar/config/signed_update_algorithms
+Date: February 2023
+Contact: Nayna Jain <nayna@linux.ibm.com>
+Description: Bitmask of flags indicating which algorithms the hypervisor
+ supports for signed update of objects, represented as a 16 byte
+ hexadecimal ASCII string. Consult the hypervisor documentation
+ for what these flags mean.
+
+ Currently only provided by PLPKS on the pseries platform.
diff --git a/Documentation/ABI/testing/sysfs-timecard b/Documentation/ABI/testing/sysfs-timecard
index 97f6773794a5..3ae41b7634ac 100644
--- a/Documentation/ABI/testing/sysfs-timecard
+++ b/Documentation/ABI/testing/sysfs-timecard
@@ -37,8 +37,15 @@ Description: (RO) Set of available destinations (sinks) for a SMA
PPS2 signal is sent to the PPS2 selector
TS1 signal is sent to timestamper 1
TS2 signal is sent to timestamper 2
+ TS3 signal is sent to timestamper 3
+ TS4 signal is sent to timestamper 4
IRIG signal is sent to the IRIG-B module
DCF signal is sent to the DCF module
+ FREQ1 signal is sent to frequency counter 1
+ FREQ2 signal is sent to frequency counter 2
+ FREQ3 signal is sent to frequency counter 3
+ FREQ4 signal is sent to frequency counter 4
+ None signal input is disabled
===== ================================================
What: /sys/class/timecard/ocpN/available_sma_outputs
@@ -50,10 +57,16 @@ Description: (RO) Set of available sources for a SMA output signal.
10Mhz output is from the 10Mhz reference clock
PHC output PPS is from the PHC clock
MAC output PPS is from the Miniature Atomic Clock
- GNSS output PPS is from the GNSS module
+ GNSS1 output PPS is from the first GNSS module
GNSS2 output PPS is from the second GNSS module
IRIG output is from the PHC, in IRIG-B format
DCF output is from the PHC, in DCF format
+ GEN1 output is from frequency generator 1
+ GEN2 output is from frequency generator 2
+ GEN3 output is from frequency generator 3
+ GEN4 output is from frequency generator 4
+ GND output is GND
+ VCC output is VCC
===== ================================================
What: /sys/class/timecard/ocpN/clock_source
@@ -63,6 +76,97 @@ Description: (RW) Contains the current synchronization source used by
the PHC. May be changed by writing one of the listed
values from the available_clock_sources attribute set.
+What: /sys/class/timecard/ocpN/clock_status_drift
+Date: March 2022
+Contact: Jonathan Lemon <jonathan.lemon@gmail.com>
+Description: (RO) Contains the current drift value used by the firmware
+ for internal disciplining of the atomic clock.
+
+What: /sys/class/timecard/ocpN/clock_status_offset
+Date: March 2022
+Contact: Jonathan Lemon <jonathan.lemon@gmail.com>
+Description: (RO) Contains the current offset value used by the firmware
+ for internal disciplining of the atomic clock.
+
+What: /sys/class/timecard/ocpN/freqX
+Date: March 2022
+Contact: Jonathan Lemon <jonathan.lemon@gmail.com>
+Description: (RO) Optional directory containing the sysfs nodes for
+ frequency counter <X>.
+
+What: /sys/class/timecard/ocpN/freqX/frequency
+Date: March 2022
+Contact: Jonathan Lemon <jonathan.lemon@gmail.com>
+Description: (RO) Contains the measured frequency over the specified
+ measurement period.
+
+What: /sys/class/timecard/ocpN/freqX/seconds
+Date: March 2022
+Contact: Jonathan Lemon <jonathan.lemon@gmail.com>
+Description: (RW) Specifies the number of seconds from 0-255 that the
+ frequency should be measured over. Write 0 to disable.
+
+What: /sys/class/timecard/ocpN/genX
+Date: March 2022
+Contact: Jonathan Lemon <jonathan.lemon@gmail.com>
+Description: (RO) Optional directory containing the sysfs nodes for
+ frequency generator <X>.
+
+What: /sys/class/timecard/ocpN/genX/duty
+Date: March 2022
+Contact: Jonathan Lemon <jonathan.lemon@gmail.com>
+Description: (RO) Specifies the signal duty cycle as a percentage from 1-99.
+
+What: /sys/class/timecard/ocpN/genX/period
+Date: March 2022
+Contact: Jonathan Lemon <jonathan.lemon@gmail.com>
+Description: (RO) Specifies the signal period in nanoseconds.
+
+What: /sys/class/timecard/ocpN/genX/phase
+Date: March 2022
+Contact: Jonathan Lemon <jonathan.lemon@gmail.com>
+Description: (RO) Specifies the signal phase offset in nanoseconds.
+
+What: /sys/class/timecard/ocpN/genX/polarity
+Date: March 2022
+Contact: Jonathan Lemon <jonathan.lemon@gmail.com>
+Description: (RO) Specifies the signal polarity, either 1 or 0.
+
+What: /sys/class/timecard/ocpN/genX/running
+Date: March 2022
+Contact: Jonathan Lemon <jonathan.lemon@gmail.com>
+Description: (RO) Either 0 or 1, showing if the signal generator is running.
+
+What: /sys/class/timecard/ocpN/genX/start
+Date: March 2022
+Contact: Jonathan Lemon <jonathan.lemon@gmail.com>
+Description: (RO) Shows the time in <sec>.<nsec> that the signal generator
+ started running.
+
+What: /sys/class/timecard/ocpN/genX/signal
+Date: March 2022
+Contact: Jonathan Lemon <jonathan.lemon@gmail.com>
+Description: (RW) Used to start the signal generator, and summarize
+ the current status.
+
+ The signal generator may be started by writing the signal
+ period, followed by the optional signal values. If the
+ optional values are not provided, they default to the current
+ settings, which may be obtained from the other sysfs nodes.
+
+ period [duty [phase [polarity]]]
+
+ echo 500000000 > signal # 1/2 second period
+ echo 1000000 40 100 > signal
+ echo 0 > signal # turn off generator
+
+ Period and phase are specified in nanoseconds. Duty cycle is
+ a percentage from 1-99. Polarity is 1 or 0.
+
+ Reading this node will return:
+
+ period duty phase polarity start_time
+
What: /sys/class/timecard/ocpN/gnss_sync
Date: September 2021
Contact: Jonathan Lemon <jonathan.lemon@gmail.com>
@@ -126,6 +230,16 @@ Description: (RW) These attributes specify the direction of the signal
The 10Mhz reference clock input is currently only valid
on SMA1 and may not be combined with other destination sinks.
+What: /sys/class/timecard/ocpN/tod_correction
+Date: March 2022
+Contact: Jonathan Lemon <jonathan.lemon@gmail.com>
+Description: (RW) The incoming GNSS signal is in UTC time, and the NMEA
+ format messages do not provide a TAI offset. This sets the
+ correction value for the incoming time.
+
+ If UBX_LS is enabled, this should be 0, and the offset is
+ taken from the UBX-NAV-TIMELS message.
+
What: /sys/class/timecard/ocpN/ts_window_adjust
Date: September 2021
Contact: Jonathan Lemon <jonathan.lemon@gmail.com>
@@ -144,24 +258,29 @@ Description: (RW) When retrieving the PHC with the PTP SYS_OFFSET_EXTENDED
the estimated point where the FPGA latches the PHC time. This
value may be changed by writing an unsigned integer.
-What: /sys/class/timecard/ocpN/ttyGNSS
-What: /sys/class/timecard/ocpN/ttyGNSS2
-Date: September 2021
+What: /sys/class/timecard/ocpN/tty
+Date: August 2024
+Contact: Vadim Fedorenko <vadim.fedorenko@linux.dev>
+Description: (RO) Directory containing the sysfs nodes for TTY attributes
+
+What: /sys/class/timecard/ocpN/tty/ttyGNSS
+What: /sys/class/timecard/ocpN/tty/ttyGNSS2
+Date: August 2024
Contact: Jonathan Lemon <jonathan.lemon@gmail.com>
-Description: These optional attributes link to the TTY serial ports
- associated with the GNSS devices.
+Description: (RO) These optional attributes contain names of the TTY serial
+ ports associated with the GNSS devices.
-What: /sys/class/timecard/ocpN/ttyMAC
-Date: September 2021
+What: /sys/class/timecard/ocpN/tty/ttyMAC
+Date: August 2024
Contact: Jonathan Lemon <jonathan.lemon@gmail.com>
-Description: This optional attribute links to the TTY serial port
- associated with the Miniature Atomic Clock.
+Description: (RO) This optional attribute contains name of the TTY serial
+ port associated with the Miniature Atomic Clock.
-What: /sys/class/timecard/ocpN/ttyNMEA
-Date: September 2021
+What: /sys/class/timecard/ocpN/tty/ttyNMEA
+Date: August 2024
Contact: Jonathan Lemon <jonathan.lemon@gmail.com>
-Description: This optional attribute links to the TTY serial port
- which outputs the PHC time in NMEA ZDA format.
+Description: (RO) This optional attribute contains name of the TTY serial
+ port which outputs the PHC time in NMEA ZDA format.
What: /sys/class/timecard/ocpN/utc_tai_offset
Date: September 2021
diff --git a/Documentation/ABI/testing/sysfs-tty b/Documentation/ABI/testing/sysfs-tty
index 820e412d38a8..895c47f05f6f 100644
--- a/Documentation/ABI/testing/sysfs-tty
+++ b/Documentation/ABI/testing/sysfs-tty
@@ -87,19 +87,22 @@ What: /sys/class/tty/ttyS<x>/close_delay
Date: October 2012
Contact: Alan Cox <alan@linux.intel.com>
Description:
- Show the closing delay time for this port in ms.
+ Show the closing delay time for this port in centiseconds.
- These sysfs values expose the TIOCGSERIAL interface via
- sysfs rather than via ioctls.
+ These sysfs values expose the TIOCGSERIAL interface via
+ sysfs rather than via ioctls.
What: /sys/class/tty/ttyS<x>/closing_wait
Date: October 2012
Contact: Alan Cox <alan@linux.intel.com>
Description:
- Show the close wait time for this port in ms.
+ Show the close wait time for this port in centiseconds.
- These sysfs values expose the TIOCGSERIAL interface via
- sysfs rather than via ioctls.
+ Waiting forever is represented as 0. If waiting on close is
+ disabled then the value is 65535.
+
+ These sysfs values expose the TIOCGSERIAL interface via
+ sysfs rather than via ioctls.
What: /sys/class/tty/ttyS<x>/custom_divisor
Date: October 2012
diff --git a/Documentation/ABI/testing/sysfs-wusb_cbaf b/Documentation/ABI/testing/sysfs-wusb_cbaf
deleted file mode 100644
index 2969d3694ec0..000000000000
--- a/Documentation/ABI/testing/sysfs-wusb_cbaf
+++ /dev/null
@@ -1,101 +0,0 @@
-What: /sys/bus/usb/drivers/wusb_cbaf/.../wusb_*
-Date: August 2008
-KernelVersion: 2.6.27
-Contact: David Vrabel <david.vrabel@csr.com>
-Description:
- Various files for managing Cable Based Association of
- (wireless) USB devices.
-
- The sequence of operations should be:
-
- 1. Device is plugged in.
-
- 2. The connection manager (CM) sees a device with CBA capability.
- (the wusb_chid etc. files in /sys/devices/blah/OURDEVICE).
-
- 3. The CM writes the host name, supported band groups,
- and the CHID (host ID) into the wusb_host_name,
- wusb_host_band_groups and wusb_chid files. These
- get sent to the device and the CDID (if any) for
- this host is requested.
-
- 4. The CM can verify that the device's supported band
- groups (wusb_device_band_groups) are compatible
- with the host.
-
- 5. The CM reads the wusb_cdid file.
-
- 6. The CM looks it up its database.
-
- - If it has a matching CHID,CDID entry, the device
- has been authorized before and nothing further
- needs to be done.
-
- - If the CDID is zero (or the CM doesn't find a
- matching CDID in its database), the device is
- assumed to be not known. The CM may associate
- the host with device by: writing a randomly
- generated CDID to wusb_cdid and then a random CK
- to wusb_ck (this uploads the new CC to the
- device).
-
- CMD may choose to prompt the user before
- associating with a new device.
-
- 7. Device is unplugged.
-
- References:
- [WUSB-AM]
- Association Models Supplement to the
- Certified Wireless Universal Serial Bus
- Specification, version 1.0.
-
-What: /sys/bus/usb/drivers/wusb_cbaf/.../wusb_chid
-Date: August 2008
-KernelVersion: 2.6.27
-Contact: David Vrabel <david.vrabel@csr.com>
-Description:
- The CHID of the host formatted as 16 space-separated
- hex octets.
-
- Writes fetches device's supported band groups and the
- the CDID for any existing association with this host.
-
-What: /sys/bus/usb/drivers/wusb_cbaf/.../wusb_host_name
-Date: August 2008
-KernelVersion: 2.6.27
-Contact: David Vrabel <david.vrabel@csr.com>
-Description:
- A friendly name for the host as a UTF-8 encoded string.
-
-What: /sys/bus/usb/drivers/wusb_cbaf/.../wusb_host_band_groups
-Date: August 2008
-KernelVersion: 2.6.27
-Contact: David Vrabel <david.vrabel@csr.com>
-Description:
- The band groups supported by the host, in the format
- defined in [WUSB-AM].
-
-What: /sys/bus/usb/drivers/wusb_cbaf/.../wusb_device_band_groups
-Date: August 2008
-KernelVersion: 2.6.27
-Contact: David Vrabel <david.vrabel@csr.com>
-Description:
- The band groups supported by the device, in the format
- defined in [WUSB-AM].
-
-What: /sys/bus/usb/drivers/wusb_cbaf/.../wusb_cdid
-Date: August 2008
-KernelVersion: 2.6.27
-Contact: David Vrabel <david.vrabel@csr.com>
-Description:
- The device's CDID formatted as 16 space-separated hex
- octets.
-
-What: /sys/bus/usb/drivers/wusb_cbaf/.../wusb_ck
-Date: August 2008
-KernelVersion: 2.6.27
-Contact: David Vrabel <david.vrabel@csr.com>
-Description:
- Write 16 space-separated random, hex octets to
- associate with the device.
diff --git a/Documentation/COPYING-logo b/Documentation/COPYING-logo
deleted file mode 100644
index b21c7cf7d9f6..000000000000
--- a/Documentation/COPYING-logo
+++ /dev/null
@@ -1,13 +0,0 @@
-This is the full-colour version of the currently unofficial Linux logo
-("currently unofficial" just means that there has been no paperwork and
-that I have not really announced it yet). It was created by Larry Ewing,
-and is freely usable as long as you acknowledge Larry as the original
-artist.
-
-Note that there are black-and-white versions of this available that
-scale down to smaller sizes and are better for letterheads or whatever
-you want to use it for: for the full range of logos take a look at
-Larry's web-page:
-
- https://www.isc.tamu.edu/~lewing/linux/
-
diff --git a/Documentation/Kconfig b/Documentation/Kconfig
index e549a61f4d96..8b6c4b84b218 100644
--- a/Documentation/Kconfig
+++ b/Documentation/Kconfig
@@ -1,23 +1,28 @@
-config WARN_MISSING_DOCUMENTS
+if COMPILE_TEST
+
+menu "Documentation"
+config WARN_MISSING_DOCUMENTS
bool "Warn if there's a missing documentation file"
- depends on COMPILE_TEST
help
- It is not uncommon that a document gets renamed.
- This option makes the Kernel to check for missing dependencies,
- warning when something is missing. Works only if the Kernel
- is built from a git tree.
+ It is not uncommon that a document gets renamed.
+ This option makes the Kernel to check for missing dependencies,
+ warning when something is missing. Works only if the Kernel
+ is built from a git tree.
- If unsure, select 'N'.
+ If unsure, select 'N'.
config WARN_ABI_ERRORS
bool "Warn if there are errors at ABI files"
- depends on COMPILE_TEST
help
- The files under Documentation/ABI should follow what's
- described at Documentation/ABI/README. Yet, as they're manually
- written, it would be possible that some of those files would
- have errors that would break them for being parsed by
- scripts/get_abi.pl. Add a check to verify them.
+ The files under Documentation/ABI should follow what's
+ described at Documentation/ABI/README. Yet, as they're manually
+ written, it would be possible that some of those files would
+ have errors that would break them for being parsed by
+ tools/docs/get_abi.py. Add a check to verify them.
+
+ If unsure, select 'N'.
+
+endmenu
- If unsure, select 'N'.
+endif
diff --git a/Documentation/Makefile b/Documentation/Makefile
index 9f4bd42cef18..e96ac6dcac4f 100644
--- a/Documentation/Makefile
+++ b/Documentation/Makefile
@@ -5,14 +5,16 @@
# for cleaning
subdir- := devicetree/bindings
+ifneq ($(MAKECMDGOALS),cleandocs)
# Check for broken documentation file references
ifeq ($(CONFIG_WARN_MISSING_DOCUMENTS),y)
-$(shell $(srctree)/scripts/documentation-file-ref-check --warn)
+$(shell $(srctree)/tools/docs/documentation-file-ref-check --warn)
endif
# Check for broken ABI files
ifeq ($(CONFIG_WARN_ABI_ERRORS),y)
-$(shell $(srctree)/scripts/get_abi.pl validate --dir $(srctree)/Documentation/ABI)
+$(shell $(srctree)/tools/docs/get_abi.py --dir $(srctree)/Documentation/ABI validate)
+endif
endif
# You can set these variables from the command line.
@@ -21,16 +23,21 @@ SPHINXOPTS =
SPHINXDIRS = .
DOCS_THEME =
DOCS_CSS =
-_SPHINXDIRS = $(sort $(patsubst $(srctree)/Documentation/%/index.rst,%,$(wildcard $(srctree)/Documentation/*/index.rst)))
-SPHINX_CONF = conf.py
+RUSTDOC =
PAPER =
BUILDDIR = $(obj)/output
PDFLATEX = xelatex
-LATEXOPTS = -interaction=batchmode
+LATEXOPTS = -interaction=batchmode -no-shell-escape
-ifeq ($(KBUILD_VERBOSE),0)
-SPHINXOPTS += "-q"
-endif
+PYTHONPYCACHEPREFIX ?= $(abspath $(BUILDDIR)/__pycache__)
+
+# Wrapper for sphinx-build
+
+BUILD_WRAPPER = $(srctree)/tools/docs/sphinx-build-wrapper
+
+# For denylisting "variable font" files
+# Can be overridden by setting as an env variable
+FONTS_CONF_DENY_VF ?= $(HOME)/deny-vf
# User-friendly check for sphinx-build
HAVE_SPHINX := $(shell if which $(SPHINXBUILD) >/dev/null 2>&1; then echo 1; else echo 0; fi)
@@ -40,109 +47,46 @@ ifeq ($(HAVE_SPHINX),0)
.DEFAULT:
$(warning The '$(SPHINXBUILD)' command was not found. Make sure you have Sphinx installed and in PATH, or set the SPHINXBUILD make variable to point to the full path of the '$(SPHINXBUILD)' executable.)
@echo
- @$(srctree)/scripts/sphinx-pre-install
+ @$(srctree)/tools/docs/sphinx-pre-install
@echo " SKIP Sphinx $@ target."
else # HAVE_SPHINX
-# User-friendly check for pdflatex and latexmk
-HAVE_PDFLATEX := $(shell if which $(PDFLATEX) >/dev/null 2>&1; then echo 1; else echo 0; fi)
-HAVE_LATEXMK := $(shell if which latexmk >/dev/null 2>&1; then echo 1; else echo 0; fi)
-
-ifeq ($(HAVE_LATEXMK),1)
- PDFLATEX := latexmk -$(PDFLATEX)
-endif #HAVE_LATEXMK
-
-# Internal variables.
-PAPEROPT_a4 = -D latex_paper_size=a4
-PAPEROPT_letter = -D latex_paper_size=letter
-KERNELDOC = $(srctree)/scripts/kernel-doc
-KERNELDOC_CONF = -D kerneldoc_srctree=$(srctree) -D kerneldoc_bin=$(KERNELDOC)
-ALLSPHINXOPTS = $(KERNELDOC_CONF) $(PAPEROPT_$(PAPER)) $(SPHINXOPTS)
-# the i18n builder cannot share the environment and doctrees with the others
-I18NSPHINXOPTS = $(PAPEROPT_$(PAPER)) $(SPHINXOPTS) .
-
-# commands; the 'cmd' from scripts/Kbuild.include is not *loopable*
-loop_cmd = $(echo-cmd) $(cmd_$(1)) || exit;
-
-# $2 sphinx builder e.g. "html"
-# $3 name of the build subfolder / e.g. "userspace-api/media", used as:
-# * dest folder relative to $(BUILDDIR) and
-# * cache folder relative to $(BUILDDIR)/.doctrees
-# $4 dest subfolder e.g. "man" for man pages at userspace-api/media/man
-# $5 reST source folder relative to $(srctree)/$(src),
-# e.g. "userspace-api/media" for the linux-tv book-set at ./Documentation/userspace-api/media
-
-quiet_cmd_sphinx = SPHINX $@ --> file://$(abspath $(BUILDDIR)/$3/$4)
- cmd_sphinx = $(MAKE) BUILDDIR=$(abspath $(BUILDDIR)) $(build)=Documentation/userspace-api/media $2 && \
- PYTHONDONTWRITEBYTECODE=1 \
- BUILDDIR=$(abspath $(BUILDDIR)) SPHINX_CONF=$(abspath $(srctree)/$(src)/$5/$(SPHINX_CONF)) \
- $(PYTHON3) $(srctree)/scripts/jobserver-exec \
- $(CONFIG_SHELL) $(srctree)/Documentation/sphinx/parallel-wrapper.sh \
- $(SPHINXBUILD) \
- -b $2 \
- -c $(abspath $(srctree)/$(src)) \
- -d $(abspath $(BUILDDIR)/.doctrees/$3) \
- -D version=$(KERNELVERSION) -D release=$(KERNELRELEASE) \
- $(ALLSPHINXOPTS) \
- $(abspath $(srctree)/$(src)/$5) \
- $(abspath $(BUILDDIR)/$3/$4) && \
- if [ "x$(DOCS_CSS)" != "x" ]; then \
- cp $(if $(patsubst /%,,$(DOCS_CSS)),$(abspath $(srctree)/$(DOCS_CSS)),$(DOCS_CSS)) $(BUILDDIR)/$3/_static/; \
- fi
-
-htmldocs:
- @$(srctree)/scripts/sphinx-pre-install --version-check
- @+$(foreach var,$(SPHINXDIRS),$(call loop_cmd,sphinx,html,$(var),,$(var)))
-
-linkcheckdocs:
- @$(foreach var,$(SPHINXDIRS),$(call loop_cmd,sphinx,linkcheck,$(var),,$(var)))
-
-latexdocs:
- @$(srctree)/scripts/sphinx-pre-install --version-check
- @+$(foreach var,$(SPHINXDIRS),$(call loop_cmd,sphinx,latex,$(var),latex,$(var)))
-
-ifeq ($(HAVE_PDFLATEX),0)
-
-pdfdocs:
- $(warning The '$(PDFLATEX)' command was not found. Make sure you have it installed and in PATH to produce PDF output.)
- @echo " SKIP Sphinx $@ target."
-
-else # HAVE_PDFLATEX
-
-pdfdocs: latexdocs
- @$(srctree)/scripts/sphinx-pre-install --version-check
- $(foreach var,$(SPHINXDIRS), \
- $(MAKE) PDFLATEX="$(PDFLATEX)" LATEXOPTS="$(LATEXOPTS)" -C $(BUILDDIR)/$(var)/latex || exit; \
- mkdir -p $(BUILDDIR)/$(var)/pdf; \
- mv $(subst .tex,.pdf,$(wildcard $(BUILDDIR)/$(var)/latex/*.tex)) $(BUILDDIR)/$(var)/pdf/; \
- )
+# Common documentation targets
+htmldocs mandocs infodocs texinfodocs latexdocs epubdocs xmldocs pdfdocs linkcheckdocs:
+ $(Q)PYTHONPYCACHEPREFIX="$(PYTHONPYCACHEPREFIX)" \
+ $(srctree)/tools/docs/sphinx-pre-install --version-check
+ +$(Q)PYTHONPYCACHEPREFIX="$(PYTHONPYCACHEPREFIX)" \
+ $(PYTHON3) $(BUILD_WRAPPER) $@ \
+ --sphinxdirs="$(SPHINXDIRS)" $(RUSTDOC) \
+ --builddir="$(BUILDDIR)" --deny-vf=$(FONTS_CONF_DENY_VF) \
+ --theme=$(DOCS_THEME) --css=$(DOCS_CSS) --paper=$(PAPER)
-endif # HAVE_PDFLATEX
-epubdocs:
- @$(srctree)/scripts/sphinx-pre-install --version-check
- @+$(foreach var,$(SPHINXDIRS),$(call loop_cmd,sphinx,epub,$(var),epub,$(var)))
-
-xmldocs:
- @$(srctree)/scripts/sphinx-pre-install --version-check
- @+$(foreach var,$(SPHINXDIRS),$(call loop_cmd,sphinx,xml,$(var),xml,$(var)))
-
-endif # HAVE_SPHINX
+endif
# The following targets are independent of HAVE_SPHINX, and the rules should
# work or silently pass without Sphinx.
+htmldocs-redirects: $(srctree)/Documentation/.renames.txt
+ @tools/docs/gen-redirects.py --output $(BUILDDIR) < $<
+
refcheckdocs:
- $(Q)cd $(srctree);scripts/documentation-file-ref-check
+ $(Q)cd $(srctree); tools/docs/documentation-file-ref-check
cleandocs:
$(Q)rm -rf $(BUILDDIR)
- $(Q)$(MAKE) BUILDDIR=$(abspath $(BUILDDIR)) $(build)=Documentation/userspace-api/media clean
+
+# Used only on help
+_SPHINXDIRS = $(shell printf "%s\n" $(patsubst $(srctree)/Documentation/%/index.rst,%,$(wildcard $(srctree)/Documentation/*/index.rst)) | sort -f)
dochelp:
@echo ' Linux kernel internal documentation in different formats from ReST:'
@echo ' htmldocs - HTML'
+ @echo ' htmldocs-redirects - generate HTML redirects for moved pages'
+ @echo ' texinfodocs - Texinfo'
+ @echo ' infodocs - Info'
+ @echo ' mandocs - Man pages'
@echo ' latexdocs - LaTeX'
@echo ' pdfdocs - PDF'
@echo ' epubdocs - EPUB'
@@ -154,13 +98,17 @@ dochelp:
@echo ' cleandocs - clean all generated files'
@echo
@echo ' make SPHINXDIRS="s1 s2" [target] Generate only docs of folder s1, s2'
- @echo ' valid values for SPHINXDIRS are: $(_SPHINXDIRS)'
- @echo
- @echo ' make SPHINX_CONF={conf-file} [target] use *additional* sphinx-build'
- @echo ' configuration. This is e.g. useful to build with nit-picking config.'
+ @echo ' top level values for SPHINXDIRS are: $(_SPHINXDIRS)'
+ @echo ' you may also use a subdirectory like SPHINXDIRS=userspace-api/media,'
+ @echo ' provided that there is an index.rst file at the subdirectory.'
@echo
@echo ' make DOCS_THEME={sphinx-theme} selects a different Sphinx theme.'
@echo
@echo ' make DOCS_CSS={a .css file} adds a DOCS_CSS override file for html/epub output.'
@echo
+ @echo ' make PAPER={a4|letter} Specifies the paper size used for LaTeX/PDF output.'
+ @echo
+ @echo ' make FONTS_CONF_DENY_VF={path} sets a deny list to block variable Noto CJK fonts'
+ @echo ' for PDF build. See tools/lib/python/kdoc/latex_fonts.py for more details'
+ @echo
@echo ' Default location for the generated documents is Documentation/output'
diff --git a/Documentation/PCI/boot-interrupts.rst b/Documentation/PCI/boot-interrupts.rst
index 2ec70121bfca..931077bb0953 100644
--- a/Documentation/PCI/boot-interrupts.rst
+++ b/Documentation/PCI/boot-interrupts.rst
@@ -61,7 +61,7 @@ Conditions
==========
The use of threaded interrupts is the most likely condition to trigger
-this problem today. Threaded interrupts may not be reenabled after the IRQ
+this problem today. Threaded interrupts may not be re-enabled after the IRQ
handler wakes. These "one shot" conditions mean that the threaded interrupt
needs to keep the interrupt line masked until the threaded handler has run.
Especially when dealing with high data rate interrupts, the thread needs to
diff --git a/Documentation/PCI/controller/index.rst b/Documentation/PCI/controller/index.rst
new file mode 100644
index 000000000000..c2ce9ccdcfa0
--- /dev/null
+++ b/Documentation/PCI/controller/index.rst
@@ -0,0 +1,10 @@
+.. SPDX-License-Identifier: GPL-2.0
+
+===========================================
+PCI Native Host Bridge and Endpoint Drivers
+===========================================
+
+.. toctree::
+ :maxdepth: 2
+
+ rcar-pcie-firmware
diff --git a/Documentation/PCI/controller/rcar-pcie-firmware.rst b/Documentation/PCI/controller/rcar-pcie-firmware.rst
new file mode 100644
index 000000000000..67d3bf66e315
--- /dev/null
+++ b/Documentation/PCI/controller/rcar-pcie-firmware.rst
@@ -0,0 +1,32 @@
+.. SPDX-License-Identifier: GPL-2.0
+
+=================================================
+Firmware of PCIe controller for Renesas R-Car V4H
+=================================================
+
+Renesas R-Car V4H (r8a779g0) has a PCIe controller, requiring a specific
+firmware download during startup.
+
+However, Renesas currently cannot distribute the firmware free of charge.
+
+The firmware file "104_PCIe_fw_addr_data_ver1.05.txt" (note that the file name
+might be different between different datasheet revisions) can be found in the
+datasheet encoded as text, and as such, the file's content must be converted
+back to binary form. This can be achieved using the following example script:
+
+.. code-block:: sh
+
+ $ awk '/^\s*0x[0-9A-Fa-f]{4}\s+0x[0-9A-Fa-f]{4}/ { print substr($2,5,2) substr($2,3,2) }' \
+ 104_PCIe_fw_addr_data_ver1.05.txt | \
+ xxd -p -r > rcar_gen4_pcie.bin
+
+Once the text content has been converted into a binary firmware file, verify
+its checksum as follows:
+
+.. code-block:: sh
+
+ $ sha1sum rcar_gen4_pcie.bin
+ 1d0bd4b189b4eb009f5d564b1f93a79112994945 rcar_gen4_pcie.bin
+
+The resulting binary file called "rcar_gen4_pcie.bin" should be placed in the
+"/lib/firmware" directory before the driver runs.
diff --git a/Documentation/PCI/endpoint/index.rst b/Documentation/PCI/endpoint/index.rst
index 38ea1f604b6d..dd1f62e731c9 100644
--- a/Documentation/PCI/endpoint/index.rst
+++ b/Documentation/PCI/endpoint/index.rst
@@ -13,6 +13,9 @@ PCI Endpoint Framework
pci-test-howto
pci-ntb-function
pci-ntb-howto
+ pci-vntb-function
+ pci-vntb-howto
+ pci-nvme-function
function/binding/pci-test
function/binding/pci-ntb
diff --git a/Documentation/PCI/endpoint/pci-endpoint-cfs.rst b/Documentation/PCI/endpoint/pci-endpoint-cfs.rst
index fb73345cfb8a..e69c2872ce3b 100644
--- a/Documentation/PCI/endpoint/pci-endpoint-cfs.rst
+++ b/Documentation/PCI/endpoint/pci-endpoint-cfs.rst
@@ -86,7 +86,7 @@ The <EPF Device> directory can have a list of symbolic links
be created by the user to represent the virtual functions that are bound to
the physical function. In the above directory structure <EPF Device 11> is a
physical function and <EPF Device 31> is a virtual function. An EPF device once
-it's linked to another EPF device, cannot be linked to a EPC device.
+it's linked to another EPF device, cannot be linked to an EPC device.
EPC Device
==========
@@ -108,7 +108,7 @@ entries corresponding to EPC device will be created by the EPC core.
The <EPC Device> directory will have a list of symbolic links to
<EPF Device>. These symbolic links should be created by the user to
represent the functions present in the endpoint device. Only <EPF Device>
-that represents a physical function can be linked to a EPC device.
+that represents a physical function can be linked to an EPC device.
The <EPC Device> directory will also have a *start* field. Once
"1" is written to this field, the endpoint device will be ready to
diff --git a/Documentation/PCI/endpoint/pci-endpoint.rst b/Documentation/PCI/endpoint/pci-endpoint.rst
index 4f5622a65555..0741c8cbd74e 100644
--- a/Documentation/PCI/endpoint/pci-endpoint.rst
+++ b/Documentation/PCI/endpoint/pci-endpoint.rst
@@ -57,11 +57,10 @@ by the PCI controller driver.
The PCI controller driver can then create a new EPC device by invoking
devm_pci_epc_create()/pci_epc_create().
-* devm_pci_epc_destroy()/pci_epc_destroy()
+* pci_epc_destroy()
- The PCI controller driver can destroy the EPC device created by either
- devm_pci_epc_create() or pci_epc_create() using devm_pci_epc_destroy() or
- pci_epc_destroy().
+ The PCI controller driver can destroy the EPC device created by
+ pci_epc_create() using pci_epc_destroy().
* pci_epc_linkup()
@@ -117,6 +116,35 @@ by the PCI endpoint function driver.
The PCI endpoint function driver should use pci_epc_mem_free_addr() to
free the memory space allocated using pci_epc_mem_alloc_addr().
+* pci_epc_map_addr()
+
+ A PCI endpoint function driver should use pci_epc_map_addr() to map to a RC
+ PCI address the CPU address of local memory obtained with
+ pci_epc_mem_alloc_addr().
+
+* pci_epc_unmap_addr()
+
+ A PCI endpoint function driver should use pci_epc_unmap_addr() to unmap the
+ CPU address of local memory mapped to a RC address with pci_epc_map_addr().
+
+* pci_epc_mem_map()
+
+ A PCI endpoint controller may impose constraints on the RC PCI addresses that
+ can be mapped. The function pci_epc_mem_map() allows endpoint function
+ drivers to allocate and map controller memory while handling such
+ constraints. This function will determine the size of the memory that must be
+ allocated with pci_epc_mem_alloc_addr() for successfully mapping a RC PCI
+ address range. This function will also indicate the size of the PCI address
+ range that was actually mapped, which can be less than the requested size, as
+ well as the offset into the allocated memory to use for accessing the mapped
+ RC PCI address range.
+
+* pci_epc_mem_unmap()
+
+ A PCI endpoint function driver can use pci_epc_mem_unmap() to unmap and free
+ controller memory that was allocated and mapped using pci_epc_mem_map().
+
+
Other EPC APIs
~~~~~~~~~~~~~~
@@ -169,11 +197,11 @@ by the PCI endpoint function driver.
* pci_epf_register_driver()
The PCI Endpoint Function driver should implement the following ops:
- * bind: ops to perform when a EPC device has been bound to EPF device
- * unbind: ops to perform when a binding has been lost between a EPC
+ * bind: ops to perform when an EPC device has been bound to EPF device
+ * unbind: ops to perform when a binding has been lost between an EPC
device and EPF device
- * linkup: ops to perform when the EPC device has established a
- connection with a host system
+ * add_cfs: optional ops to create function specific configfs
+ attributes
The PCI Function driver can then register the PCI EPF driver by using
pci_epf_register_driver().
@@ -223,7 +251,7 @@ pci-ep-cfs.c can be used as reference for using these APIs.
* pci_epf_bind()
pci_epf_bind() should be invoked when the EPF device has been bound to
- a EPC device.
+ an EPC device.
* pci_epf_unbind()
diff --git a/Documentation/PCI/endpoint/pci-ntb-howto.rst b/Documentation/PCI/endpoint/pci-ntb-howto.rst
index 1884bf29caba..4261e7157ef1 100644
--- a/Documentation/PCI/endpoint/pci-ntb-howto.rst
+++ b/Documentation/PCI/endpoint/pci-ntb-howto.rst
@@ -88,13 +88,10 @@ commands can be used::
# echo 0x104c > functions/pci_epf_ntb/func1/vendorid
# echo 0xb00d > functions/pci_epf_ntb/func1/deviceid
-In order to configure NTB specific attributes, a new sub-directory to func1
-should be created::
-
- # mkdir functions/pci_epf_ntb/func1/pci_epf_ntb.0/
-
-The NTB function driver will populate this directory with various attributes
-that can be configured by the user::
+The PCI endpoint framework also automatically creates a sub-directory in the
+function attribute directory. This sub-directory has the same name as the name
+of the function device and is populated with the following NTB specific
+attributes that can be configured by the user::
# ls functions/pci_epf_ntb/func1/pci_epf_ntb.0/
db_count mw1 mw2 mw3 mw4 num_mws
diff --git a/Documentation/PCI/endpoint/pci-nvme-function.rst b/Documentation/PCI/endpoint/pci-nvme-function.rst
new file mode 100644
index 000000000000..a68015317f7f
--- /dev/null
+++ b/Documentation/PCI/endpoint/pci-nvme-function.rst
@@ -0,0 +1,13 @@
+.. SPDX-License-Identifier: GPL-2.0
+
+=================
+PCI NVMe Function
+=================
+
+:Author: Damien Le Moal <dlemoal@kernel.org>
+
+The PCI NVMe endpoint function implements a PCI NVMe controller using the NVMe
+subsystem target core code. The driver for this function resides with the NVMe
+subsystem as drivers/nvme/target/pci-epf.c.
+
+See Documentation/nvme/nvme-pci-endpoint-target.rst for more details.
diff --git a/Documentation/PCI/endpoint/pci-test-howto.rst b/Documentation/PCI/endpoint/pci-test-howto.rst
index 909f770a07d6..dd66858cde46 100644
--- a/Documentation/PCI/endpoint/pci-test-howto.rst
+++ b/Documentation/PCI/endpoint/pci-test-howto.rst
@@ -81,8 +81,8 @@ device, the following commands can be used::
# echo 0x104c > functions/pci_epf_test/func1/vendorid
# echo 0xb500 > functions/pci_epf_test/func1/deviceid
- # echo 16 > functions/pci_epf_test/func1/msi_interrupts
- # echo 8 > functions/pci_epf_test/func1/msix_interrupts
+ # echo 32 > functions/pci_epf_test/func1/msi_interrupts
+ # echo 2048 > functions/pci_epf_test/func1/msix_interrupts
Binding pci-epf-test Device to EP Controller
@@ -123,113 +123,98 @@ above::
Using Endpoint Test function Device
-----------------------------------
-pcitest.sh added in tools/pci/ can be used to run all the default PCI endpoint
-tests. To compile this tool the following commands should be used::
+Kselftest added in tools/testing/selftests/pci_endpoint can be used to run all
+the default PCI endpoint tests. To build the Kselftest for PCI endpoint
+subsystem, the following commands should be used::
# cd <kernel-dir>
- # make -C tools/pci
+ # make -C tools/testing/selftests/pci_endpoint
or if you desire to compile and install in your system::
# cd <kernel-dir>
- # make -C tools/pci install
+ # make -C tools/testing/selftests/pci_endpoint INSTALL_PATH=/usr/bin install
-The tool and script will be located in <rootfs>/usr/bin/
+The test will be located in <rootfs>/usr/bin/
-
-pcitest.sh Output
-~~~~~~~~~~~~~~~~~
+Kselftest Output
+~~~~~~~~~~~~~~~~
::
- # pcitest.sh
- BAR tests
-
- BAR0: OKAY
- BAR1: OKAY
- BAR2: OKAY
- BAR3: OKAY
- BAR4: NOT OKAY
- BAR5: NOT OKAY
-
- Interrupt tests
-
- SET IRQ TYPE TO LEGACY: OKAY
- LEGACY IRQ: NOT OKAY
- SET IRQ TYPE TO MSI: OKAY
- MSI1: OKAY
- MSI2: OKAY
- MSI3: OKAY
- MSI4: OKAY
- MSI5: OKAY
- MSI6: OKAY
- MSI7: OKAY
- MSI8: OKAY
- MSI9: OKAY
- MSI10: OKAY
- MSI11: OKAY
- MSI12: OKAY
- MSI13: OKAY
- MSI14: OKAY
- MSI15: OKAY
- MSI16: OKAY
- MSI17: NOT OKAY
- MSI18: NOT OKAY
- MSI19: NOT OKAY
- MSI20: NOT OKAY
- MSI21: NOT OKAY
- MSI22: NOT OKAY
- MSI23: NOT OKAY
- MSI24: NOT OKAY
- MSI25: NOT OKAY
- MSI26: NOT OKAY
- MSI27: NOT OKAY
- MSI28: NOT OKAY
- MSI29: NOT OKAY
- MSI30: NOT OKAY
- MSI31: NOT OKAY
- MSI32: NOT OKAY
- SET IRQ TYPE TO MSI-X: OKAY
- MSI-X1: OKAY
- MSI-X2: OKAY
- MSI-X3: OKAY
- MSI-X4: OKAY
- MSI-X5: OKAY
- MSI-X6: OKAY
- MSI-X7: OKAY
- MSI-X8: OKAY
- MSI-X9: NOT OKAY
- MSI-X10: NOT OKAY
- MSI-X11: NOT OKAY
- MSI-X12: NOT OKAY
- MSI-X13: NOT OKAY
- MSI-X14: NOT OKAY
- MSI-X15: NOT OKAY
- MSI-X16: NOT OKAY
- [...]
- MSI-X2047: NOT OKAY
- MSI-X2048: NOT OKAY
-
- Read Tests
-
- SET IRQ TYPE TO MSI: OKAY
- READ ( 1 bytes): OKAY
- READ ( 1024 bytes): OKAY
- READ ( 1025 bytes): OKAY
- READ (1024000 bytes): OKAY
- READ (1024001 bytes): OKAY
-
- Write Tests
-
- WRITE ( 1 bytes): OKAY
- WRITE ( 1024 bytes): OKAY
- WRITE ( 1025 bytes): OKAY
- WRITE (1024000 bytes): OKAY
- WRITE (1024001 bytes): OKAY
-
- Copy Tests
-
- COPY ( 1 bytes): OKAY
- COPY ( 1024 bytes): OKAY
- COPY ( 1025 bytes): OKAY
- COPY (1024000 bytes): OKAY
- COPY (1024001 bytes): OKAY
+ # pci_endpoint_test
+ TAP version 13
+ 1..16
+ # Starting 16 tests from 9 test cases.
+ # RUN pci_ep_bar.BAR0.BAR_TEST ...
+ # OK pci_ep_bar.BAR0.BAR_TEST
+ ok 1 pci_ep_bar.BAR0.BAR_TEST
+ # RUN pci_ep_bar.BAR1.BAR_TEST ...
+ # OK pci_ep_bar.BAR1.BAR_TEST
+ ok 2 pci_ep_bar.BAR1.BAR_TEST
+ # RUN pci_ep_bar.BAR2.BAR_TEST ...
+ # OK pci_ep_bar.BAR2.BAR_TEST
+ ok 3 pci_ep_bar.BAR2.BAR_TEST
+ # RUN pci_ep_bar.BAR3.BAR_TEST ...
+ # OK pci_ep_bar.BAR3.BAR_TEST
+ ok 4 pci_ep_bar.BAR3.BAR_TEST
+ # RUN pci_ep_bar.BAR4.BAR_TEST ...
+ # OK pci_ep_bar.BAR4.BAR_TEST
+ ok 5 pci_ep_bar.BAR4.BAR_TEST
+ # RUN pci_ep_bar.BAR5.BAR_TEST ...
+ # OK pci_ep_bar.BAR5.BAR_TEST
+ ok 6 pci_ep_bar.BAR5.BAR_TEST
+ # RUN pci_ep_basic.CONSECUTIVE_BAR_TEST ...
+ # OK pci_ep_basic.CONSECUTIVE_BAR_TEST
+ ok 7 pci_ep_basic.CONSECUTIVE_BAR_TEST
+ # RUN pci_ep_basic.LEGACY_IRQ_TEST ...
+ # OK pci_ep_basic.LEGACY_IRQ_TEST
+ ok 8 pci_ep_basic.LEGACY_IRQ_TEST
+ # RUN pci_ep_basic.MSI_TEST ...
+ # OK pci_ep_basic.MSI_TEST
+ ok 9 pci_ep_basic.MSI_TEST
+ # RUN pci_ep_basic.MSIX_TEST ...
+ # OK pci_ep_basic.MSIX_TEST
+ ok 10 pci_ep_basic.MSIX_TEST
+ # RUN pci_ep_data_transfer.memcpy.READ_TEST ...
+ # OK pci_ep_data_transfer.memcpy.READ_TEST
+ ok 11 pci_ep_data_transfer.memcpy.READ_TEST
+ # RUN pci_ep_data_transfer.memcpy.WRITE_TEST ...
+ # OK pci_ep_data_transfer.memcpy.WRITE_TEST
+ ok 12 pci_ep_data_transfer.memcpy.WRITE_TEST
+ # RUN pci_ep_data_transfer.memcpy.COPY_TEST ...
+ # OK pci_ep_data_transfer.memcpy.COPY_TEST
+ ok 13 pci_ep_data_transfer.memcpy.COPY_TEST
+ # RUN pci_ep_data_transfer.dma.READ_TEST ...
+ # OK pci_ep_data_transfer.dma.READ_TEST
+ ok 14 pci_ep_data_transfer.dma.READ_TEST
+ # RUN pci_ep_data_transfer.dma.WRITE_TEST ...
+ # OK pci_ep_data_transfer.dma.WRITE_TEST
+ ok 15 pci_ep_data_transfer.dma.WRITE_TEST
+ # RUN pci_ep_data_transfer.dma.COPY_TEST ...
+ # OK pci_ep_data_transfer.dma.COPY_TEST
+ ok 16 pci_ep_data_transfer.dma.COPY_TEST
+ # PASSED: 16 / 16 tests passed.
+ # Totals: pass:16 fail:0 xfail:0 xpass:0 skip:0 error:0
+
+
+Testcase 16 (pci_ep_data_transfer.dma.COPY_TEST) will fail for most of the DMA
+capable endpoint controllers due to the absence of the MEMCPY over DMA. For such
+controllers, it is advisable to skip this testcase using this
+command::
+
+ # pci_endpoint_test -f pci_ep_bar -f pci_ep_basic -v memcpy -T COPY_TEST -v dma
+
+Kselftest EP Doorbell
+~~~~~~~~~~~~~~~~~~~~~
+
+If the Endpoint MSI controller is used for the doorbell usecase, run below
+command for testing it:
+
+ # pci_endpoint_test -f pcie_ep_doorbell
+
+ # Starting 1 tests from 1 test cases.
+ # RUN pcie_ep_doorbell.DOORBELL_TEST ...
+ # OK pcie_ep_doorbell.DOORBELL_TEST
+ ok 1 pcie_ep_doorbell.DOORBELL_TEST
+ # PASSED: 1 / 1 tests passed.
+ # Totals: pass:1 fail:0 xfail:0 xpass:0 skip:0 error:0
diff --git a/Documentation/PCI/endpoint/pci-vntb-function.rst b/Documentation/PCI/endpoint/pci-vntb-function.rst
new file mode 100644
index 000000000000..0c51f53ab972
--- /dev/null
+++ b/Documentation/PCI/endpoint/pci-vntb-function.rst
@@ -0,0 +1,129 @@
+.. SPDX-License-Identifier: GPL-2.0
+
+=================
+PCI vNTB Function
+=================
+
+:Author: Frank Li <Frank.Li@nxp.com>
+
+The difference between PCI NTB function and PCI vNTB function is
+
+PCI NTB function need at two endpoint instances and connect HOST1
+and HOST2.
+
+PCI vNTB function only use one host and one endpoint(EP), use NTB
+connect EP and PCI host
+
+.. code-block:: text
+
+
+ +------------+ +---------------------------------------+
+ | | | |
+ +------------+ | +--------------+
+ | NTB | | | NTB |
+ | NetDev | | | NetDev |
+ +------------+ | +--------------+
+ | NTB | | | NTB |
+ | Transfer | | | Transfer |
+ +------------+ | +--------------+
+ | | | | |
+ | PCI NTB | | | |
+ | EPF | | | |
+ | Driver | | | PCI Virtual |
+ | | +---------------+ | NTB Driver |
+ | | | PCI EP NTB |<------>| |
+ | | | FN Driver | | |
+ +------------+ +---------------+ +--------------+
+ | | | | | |
+ | PCI BUS | <-----> | PCI EP BUS | | Virtual PCI |
+ | | PCI | | | BUS |
+ +------------+ +---------------+--------+--------------+
+ PCI RC PCI EP
+
+Constructs used for Implementing vNTB
+=====================================
+
+ 1) Config Region
+ 2) Self Scratchpad Registers
+ 3) Peer Scratchpad Registers
+ 4) Doorbell (DB) Registers
+ 5) Memory Window (MW)
+
+
+Config Region:
+--------------
+
+It is same as PCI NTB Function driver
+
+Scratchpad Registers:
+---------------------
+
+It is appended after Config region.
+
+.. code-block:: text
+
+
+ +--------------------------------------------------+ Base
+ | |
+ | |
+ | |
+ | Common Config Register |
+ | |
+ | |
+ | |
+ +-----------------------+--------------------------+ Base + span_offset
+ | | |
+ | Peer Span Space | Span Space |
+ | | |
+ | | |
+ +-----------------------+--------------------------+ Base + span_offset
+ | | | + span_count * 4
+ | | |
+ | Span Space | Peer Span Space |
+ | | |
+ +-----------------------+--------------------------+
+ Virtual PCI Pcie Endpoint
+ NTB Driver NTB Driver
+
+
+Doorbell Registers:
+-------------------
+
+ Doorbell Registers are used by the hosts to interrupt each other.
+
+Memory Window:
+--------------
+
+ Actual transfer of data between the two hosts will happen using the
+ memory window.
+
+Modeling Constructs:
+====================
+
+32-bit BARs.
+
+====== ===============
+BAR NO CONSTRUCTS USED
+====== ===============
+BAR0 Config Region
+BAR1 Doorbell
+BAR2 Memory Window 1
+BAR3 Memory Window 2
+BAR4 Memory Window 3
+BAR5 Memory Window 4
+====== ===============
+
+64-bit BARs.
+
+====== ===============================
+BAR NO CONSTRUCTS USED
+====== ===============================
+BAR0 Config Region + Scratchpad
+BAR1
+BAR2 Doorbell
+BAR3
+BAR4 Memory Window 1
+BAR5
+====== ===============================
+
+
diff --git a/Documentation/PCI/endpoint/pci-vntb-howto.rst b/Documentation/PCI/endpoint/pci-vntb-howto.rst
new file mode 100644
index 000000000000..9a7a2f0a6849
--- /dev/null
+++ b/Documentation/PCI/endpoint/pci-vntb-howto.rst
@@ -0,0 +1,169 @@
+.. SPDX-License-Identifier: GPL-2.0
+
+===================================================================
+PCI Non-Transparent Bridge (NTB) Endpoint Function (EPF) User Guide
+===================================================================
+
+:Author: Frank Li <Frank.Li@nxp.com>
+
+This document is a guide to help users use pci-epf-vntb function driver
+and ntb_hw_epf host driver for NTB functionality. The list of steps to
+be followed in the host side and EP side is given below. For the hardware
+configuration and internals of NTB using configurable endpoints see
+Documentation/PCI/endpoint/pci-vntb-function.rst
+
+Endpoint Device
+===============
+
+Endpoint Controller Devices
+---------------------------
+
+To find the list of endpoint controller devices in the system::
+
+ # ls /sys/class/pci_epc/
+ 5f010000.pcie_ep
+
+If PCI_ENDPOINT_CONFIGFS is enabled::
+
+ # ls /sys/kernel/config/pci_ep/controllers
+ 5f010000.pcie_ep
+
+Endpoint Function Drivers
+-------------------------
+
+To find the list of endpoint function drivers in the system::
+
+ # ls /sys/bus/pci-epf/drivers
+ pci_epf_ntb pci_epf_test pci_epf_vntb
+
+If PCI_ENDPOINT_CONFIGFS is enabled::
+
+ # ls /sys/kernel/config/pci_ep/functions
+ pci_epf_ntb pci_epf_test pci_epf_vntb
+
+
+Creating pci-epf-vntb Device
+----------------------------
+
+PCI endpoint function device can be created using the configfs. To create
+pci-epf-vntb device, the following commands can be used::
+
+ # mount -t configfs none /sys/kernel/config
+ # cd /sys/kernel/config/pci_ep/
+ # mkdir functions/pci_epf_vntb/func1
+
+The "mkdir func1" above creates the pci-epf-ntb function device that will
+be probed by pci_epf_vntb driver.
+
+The PCI endpoint framework populates the directory with the following
+configurable fields::
+
+ # ls functions/pci_epf_ntb/func1
+ baseclass_code deviceid msi_interrupts pci-epf-ntb.0
+ progif_code secondary subsys_id vendorid
+ cache_line_size interrupt_pin msix_interrupts primary
+ revid subclass_code subsys_vendor_id
+
+The PCI endpoint function driver populates these entries with default values
+when the device is bound to the driver. The pci-epf-vntb driver populates
+vendorid with 0xffff and interrupt_pin with 0x0001::
+
+ # cat functions/pci_epf_vntb/func1/vendorid
+ 0xffff
+ # cat functions/pci_epf_vntb/func1/interrupt_pin
+ 0x0001
+
+
+Configuring pci-epf-vntb Device
+-------------------------------
+
+The user can configure the pci-epf-vntb device using its configfs entry. In order
+to change the vendorid and the deviceid, the following
+commands can be used::
+
+ # echo 0x1957 > functions/pci_epf_vntb/func1/vendorid
+ # echo 0x0809 > functions/pci_epf_vntb/func1/deviceid
+
+The PCI endpoint framework also automatically creates a sub-directory in the
+function attribute directory. This sub-directory has the same name as the name
+of the function device and is populated with the following NTB specific
+attributes that can be configured by the user::
+
+ # ls functions/pci_epf_vntb/func1/pci_epf_vntb.0/
+ ctrl_bar db_count mw1_bar mw2_bar mw3_bar mw4_bar spad_count
+ db_bar mw1 mw2 mw3 mw4 num_mws vbus_number
+ vntb_vid vntb_pid
+
+A sample configuration for NTB function is given below::
+
+ # echo 4 > functions/pci_epf_vntb/func1/pci_epf_vntb.0/db_count
+ # echo 128 > functions/pci_epf_vntb/func1/pci_epf_vntb.0/spad_count
+ # echo 1 > functions/pci_epf_vntb/func1/pci_epf_vntb.0/num_mws
+ # echo 0x100000 > functions/pci_epf_vntb/func1/pci_epf_vntb.0/mw1
+
+By default, each construct is assigned a BAR, as needed and in order.
+Should a specific BAR setup be required by the platform, BAR may be assigned
+to each construct using the related ``XYZ_bar`` entry.
+
+A sample configuration for virtual NTB driver for virtual PCI bus::
+
+ # echo 0x1957 > functions/pci_epf_vntb/func1/pci_epf_vntb.0/vntb_vid
+ # echo 0x080A > functions/pci_epf_vntb/func1/pci_epf_vntb.0/vntb_pid
+ # echo 0x10 > functions/pci_epf_vntb/func1/pci_epf_vntb.0/vbus_number
+
+Binding pci-epf-ntb Device to EP Controller
+--------------------------------------------
+
+NTB function device should be attached to PCI endpoint controllers
+connected to the host.
+
+ # ln -s controllers/5f010000.pcie_ep functions/pci-epf-ntb/func1/primary
+
+Once the above step is completed, the PCI endpoint controllers are ready to
+establish a link with the host.
+
+
+Start the Link
+--------------
+
+In order for the endpoint device to establish a link with the host, the _start_
+field should be populated with '1'. For NTB, both the PCI endpoint controllers
+should establish link with the host (imx8 don't need this steps)::
+
+ # echo 1 > controllers/5f010000.pcie_ep/start
+
+RootComplex Device
+==================
+
+lspci Output at Host side
+-------------------------
+
+Note that the devices listed here correspond to the values populated in
+"Creating pci-epf-ntb Device" section above::
+
+ # lspci
+ 00:00.0 PCI bridge: Freescale Semiconductor Inc Device 0000 (rev 01)
+ 01:00.0 RAM memory: Freescale Semiconductor Inc Device 0809
+
+Endpoint Device / Virtual PCI bus
+=================================
+
+lspci Output at EP Side / Virtual PCI bus
+-----------------------------------------
+
+Note that the devices listed here correspond to the values populated in
+"Creating pci-epf-ntb Device" section above::
+
+ # lspci
+ 10:00.0 Unassigned class [ffff]: Dawicontrol Computersysteme GmbH Device 1234 (rev ff)
+
+Using ntb_hw_epf Device
+-----------------------
+
+The host side software follows the standard NTB software architecture in Linux.
+All the existing client side NTB utilities like NTB Transport Client and NTB
+Netdev, NTB Ping Pong Test Client and NTB Tool Test Client can be used with NTB
+function device.
+
+For more information on NTB see
+:doc:`Non-Transparent Bridge <../../driver-api/ntb>`
diff --git a/Documentation/PCI/index.rst b/Documentation/PCI/index.rst
index c17c87af1968..5d720d2a415e 100644
--- a/Documentation/PCI/index.rst
+++ b/