diff options
1283 files changed, 11726 insertions, 33664 deletions
@@ -1916,6 +1916,15 @@ S: 660 Harvard Ave. #7 S: Santa Clara, CA 95051 S: USA +N: Kukjin Kim +E: kgene@kernel.org +D: Samsung S3C, S5P and Exynos ARM architectures + +N: Sangbeom Kim +E: sbkim73@samsung.com +D: Samsung SoC Audio (ASoC) drivers +D: Samsung PMIC (RTC, regulators, MFD) drivers + N: Russell King E: rmk@arm.linux.org.uk D: Linux/arm integrator, maintainer & hacker diff --git a/Documentation/ABI/README b/Documentation/ABI/README index 3121029dce21..8bac9cb09a6d 100644 --- a/Documentation/ABI/README +++ b/Documentation/ABI/README @@ -32,7 +32,7 @@ The different levels of stability are: layout of the files below for details on how to do this.) obsolete/ - This directory documents interfaces that are still remaining in + This directory documents interfaces that are still remaining in the kernel, but are marked to be removed at some later point in time. The description of the interface will document the reason why it is obsolete and when it can be expected to be removed. @@ -58,6 +58,14 @@ Users: All users of this interface who wish to be notified when be changed further. +Note: + The fields should be use a simple notation, compatible with ReST markup. + Also, the file **should not** have a top-level index, like:: + + === + foo + === + How things move between levels: Interfaces in stable may move to obsolete, as long as the proper diff --git a/Documentation/ABI/obsolete/sysfs-class-dax b/Documentation/ABI/obsolete/sysfs-class-dax index 2cb9fc5e8bd1..0faf1354cd05 100644 --- a/Documentation/ABI/obsolete/sysfs-class-dax +++ b/Documentation/ABI/obsolete/sysfs-class-dax @@ -8,11 +8,11 @@ Description: Device DAX is the device-centric analogue of Filesystem system. Device DAX is strict, precise and predictable. Specifically this interface: - 1/ Guarantees fault granularity with respect to a given - page size (pte, pmd, or pud) set at configuration time. + 1. Guarantees fault granularity with respect to a given + page size (pte, pmd, or pud) set at configuration time. - 2/ Enforces deterministic behavior by being strict about - what fault scenarios are supported. + 2. Enforces deterministic behavior by being strict about + what fault scenarios are supported. The /sys/class/dax/ interface enumerates all the device-dax instances in the system. The ABI is diff --git a/Documentation/ABI/obsolete/sysfs-driver-hid-roccat-pyra b/Documentation/ABI/obsolete/sysfs-driver-hid-roccat-pyra index 5d41ebadf15e..66545c587a64 100644 --- a/Documentation/ABI/obsolete/sysfs-driver-hid-roccat-pyra +++ b/Documentation/ABI/obsolete/sysfs-driver-hid-roccat-pyra @@ -7,10 +7,13 @@ Description: It is possible to switch the cpi setting of the mouse with the setting reported by the mouse. This number has to be further processed to receive the real dpi value: + ===== ==== VALUE DPI + ===== ==== 1 400 2 800 4 1600 + ===== ==== This file is readonly. Has never been used. If bookkeeping is done, it's done in userland tools. diff --git a/Documentation/ABI/obsolete/sysfs-gpio b/Documentation/ABI/obsolete/sysfs-gpio index e0d4e5e2dd90..b8b0fd341c17 100644 --- a/Documentation/ABI/obsolete/sysfs-gpio +++ b/Documentation/ABI/obsolete/sysfs-gpio @@ -13,6 +13,8 @@ Description: GPIOs are identified as they are inside the kernel, using integers in the range 0..INT_MAX. See Documentation/admin-guide/gpio for more information. + :: + /sys/class/gpio /export ... asks the kernel to export a GPIO to userspace /unexport ... to return a GPIO to the kernel diff --git a/Documentation/ABI/removed/devfs b/Documentation/ABI/removed/devfs index 0020c49933c4..24fb35adf277 100644 --- a/Documentation/ABI/removed/devfs +++ b/Documentation/ABI/removed/devfs @@ -5,6 +5,7 @@ Description: devfs has been unmaintained for a number of years, has unfixable races, contains a naming policy within the kernel that is against the LSB, and can be replaced by using udev. + The files fs/devfs/*, include/linux/devfs_fs*.h were removed, along with the assorted devfs function calls throughout the kernel tree. diff --git a/Documentation/ABI/removed/raw1394 b/Documentation/ABI/removed/raw1394 index ec333e676322..9ec7ec493920 100644 --- a/Documentation/ABI/removed/raw1394 +++ b/Documentation/ABI/removed/raw1394 @@ -7,6 +7,7 @@ Description: to implement sensible device security policies, and its low level of abstraction that required userspace clients to duplicate much of the kernel's ieee1394 core functionality. + Replaced by /dev/fw*, i.e. the <linux/firewire-cdev.h> ABI of firewire-core. diff --git a/Documentation/ABI/removed/sysfs-class-rfkill b/Documentation/ABI/removed/sysfs-class-rfkill index 9c08c7f98ffb..f25174eafd55 100644 --- a/Documentation/ABI/removed/sysfs-class-rfkill +++ b/Documentation/ABI/removed/sysfs-class-rfkill @@ -10,4 +10,4 @@ Description: This file was deprecated because there no longer was a way to claim just control over a single rfkill instance. This file was scheduled to be removed in 2012, and was removed in 2016. -Values: 0: Kernel handles events +Values: 0: Kernel handles events diff --git a/Documentation/ABI/removed/video1394 b/Documentation/ABI/removed/video1394 index c39c25aee77b..1905d35a6619 100644 --- a/Documentation/ABI/removed/video1394 +++ b/Documentation/ABI/removed/video1394 @@ -8,6 +8,7 @@ Description: performance issues in its first generation. Any video1394 user had to use raw1394 + libraw1394 too because video1394 did not provide asynchronous I/O for device discovery and configuration. + Replaced by /dev/fw*, i.e. the <linux/firewire-cdev.h> ABI of firewire-core. diff --git a/Documentation/ABI/stable/firewire-cdev b/Documentation/ABI/stable/firewire-cdev index f72ed653878a..261f85b13154 100644 --- a/Documentation/ABI/stable/firewire-cdev +++ b/Documentation/ABI/stable/firewire-cdev @@ -14,13 +14,17 @@ Description: Each /dev/fw* is associated with one IEEE 1394 node, which can be remote or local nodes. Operations on a /dev/fw* file have different scope: + - The 1394 node which is associated with the file: + - Asynchronous request transmission - Get the Configuration ROM - Query node ID - Query maximum speed of the path between this node and local node + - The 1394 bus (i.e. "card") to which the node is attached to: + - Isochronous stream transmission and reception - Asynchronous stream transmission and reception - Asynchronous broadcast request transmission @@ -31,7 +35,9 @@ Description: manager - Query cycle time - Bus reset initiation, bus reset event reception + - All 1394 buses: + - Allocation of IEEE 1212 address ranges on the local link layers, reception of inbound requests to such an address range, asynchronous response transmission @@ -43,6 +49,7 @@ Description: userland implement different access permission models, some operations are restricted to /dev/fw* files that are associated with a local node: + - Addition of descriptors or directories to the local nodes' Configuration ROM - PHY packet transmission and reception @@ -55,50 +62,50 @@ Description: The following file operations are supported: open(2) - Currently the only useful flags are O_RDWR. + Currently the only useful flags are O_RDWR. ioctl(2) - Initiate various actions. Some take immediate effect, others - are performed asynchronously while or after the ioctl returns. - See the inline documentation in <linux/firewire-cdev.h> for - descriptions of all ioctls. + Initiate various actions. Some take immediate effect, others + are performed asynchronously while or after the ioctl returns. + See the inline documentation in <linux/firewire-cdev.h> for + descriptions of all ioctls. poll(2), select(2), epoll_wait(2) etc. - Watch for events to become available to be read. + Watch for events to become available to be read. read(2) - Receive various events. There are solicited events like - outbound asynchronous transaction completion or isochronous - buffer completion, and unsolicited events such as bus resets, - request reception, or PHY packet reception. Always use a read - buffer which is large enough to receive the largest event that - could ever arrive. See <linux/firewire-cdev.h> for descriptions - of all event types and for which ioctls affect reception of - events. + Receive various events. There are solicited events like + outbound asynchronous transaction completion or isochronous + buffer completion, and unsolicited events such as bus resets, + request reception, or PHY packet reception. Always use a read + buffer which is large enough to receive the largest event that + could ever arrive. See <linux/firewire-cdev.h> for descriptions + of all event types and for which ioctls affect reception of + events. mmap(2) - Allocate a DMA buffer for isochronous reception or transmission - and map it into the process address space. The arguments should - be used as follows: addr = NULL, length = the desired buffer - size, i.e. number of packets times size of largest packet, - prot = at least PROT_READ for reception and at least PROT_WRITE - for transmission, flags = MAP_SHARED, fd = the handle to the - /dev/fw*, offset = 0. + Allocate a DMA buffer for isochronous reception or transmission + and map it into the process address space. The arguments should + be used as follows: addr = NULL, length = the desired buffer + size, i.e. number of packets times size of largest packet, + prot = at least PROT_READ for reception and at least PROT_WRITE + for transmission, flags = MAP_SHARED, fd = the handle to the + /dev/fw*, offset = 0. Isochronous reception works in packet-per-buffer fashion except for multichannel reception which works in buffer-fill mode. munmap(2) - Unmap the isochronous I/O buffer from the process address space. + Unmap the isochronous I/O buffer from the process address space. close(2) - Besides stopping and freeing I/O contexts that were associated - with the file descriptor, back out any changes to the local - nodes' Configuration ROM. Deallocate isochronous channels and - bandwidth at the IRM that were marked for kernel-assisted - re- and deallocation. - -Users: libraw1394 - libdc1394 - libhinawa + Besides stopping and freeing I/O contexts that were associated + with the file descriptor, back out any changes to the local + nodes' Configuration ROM. Deallocate isochronous channels and + bandwidth at the IRM that were marked for kernel-assisted + re- and deallocation. + +Users: libraw1394; + libdc1394; + libhinawa; tools like linux-firewire-utils, fwhack, ... diff --git a/Documentation/ABI/stable/sysfs-acpi-pmprofile b/Documentation/ABI/stable/sysfs-acpi-pmprofile index 964c7a8afb26..2d6314f0e4e4 100644 --- a/Documentation/ABI/stable/sysfs-acpi-pmprofile +++ b/Documentation/ABI/stable/sysfs-acpi-pmprofile @@ -1,22 +1,26 @@ -What: /sys/firmware/acpi/pm_profile +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 +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. -Values: For possible values see ACPI specification: + +Values: For possible values see ACPI specification: 5.2.9 Fixed ACPI Description Table (FADT) Field: Preferred_PM_Profile Currently these values are defined by spec: - 0 Unspecified - 1 Desktop - 2 Mobile - 3 Workstation - 4 Enterprise Server - 5 SOHO Server - 6 Appliance PC - 7 Performance Server + + == ================= + 0 Unspecified + 1 Desktop + 2 Mobile + 3 Workstation + 4 Enterprise Server + 5 SOHO Server + 6 Appliance PC + 7 Performance Server >7 Reserved + == ================= diff --git a/Documentation/ABI/stable/sysfs-bus-firewire b/Documentation/ABI/stable/sysfs-bus-firewire index 41e5a0cd1e3e..9ac9eddb82ef 100644 --- a/Documentation/ABI/stable/sysfs-bus-firewire +++ b/Documentation/ABI/stable/sysfs-bus-firewire @@ -47,6 +47,7 @@ Description: IEEE 1394 node device attribute. Read-only and immutable. Values: 1: The sysfs entry represents a local node (a controller card). + 0: The sysfs entry represents a remote node. @@ -125,7 +126,9 @@ Description: Read-only attribute, immutable during the target's lifetime. Format, as exposed by firewire-sbp2 since 2.6.22, May 2007: Colon-separated hexadecimal string representations of + u64 EUI-64 : u24 directory_ID : u16 LUN + without 0x prefixes, without whitespace. The former sbp2 driver (removed in 2.6.37 after being superseded by firewire-sbp2) used a somewhat shorter format which was not as close to SAM. diff --git a/Documentation/ABI/stable/sysfs-bus-nvmem b/Documentation/ABI/stable/sysfs-bus-nvmem index 9ffba8576f7b..c399323f37de 100644 --- a/Documentation/ABI/stable/sysfs-bus-nvmem +++ b/Documentation/ABI/stable/sysfs-bus-nvmem @@ -9,13 +9,14 @@ Description: Note: This file is only present if CONFIG_NVMEM_SYSFS is enabled - ex: - hexdump /sys/bus/nvmem/devices/qfprom0/nvmem + ex:: - 0000000 0000 0000 0000 0000 0000 0000 0000 0000 - * - 00000a0 db10 2240 0000 e000 0c00 0c00 0000 0c00 - 0000000 0000 0000 0000 0000 0000 0000 0000 0000 - ... - * - 0001000 + hexdump /sys/bus/nvmem/devices/qfprom0/nvmem + + 0000000 0000 0000 0000 0000 0000 0000 0000 0000 + * + 00000a0 db10 2240 0000 e000 0c00 0c00 0000 0c00 + 0000000 0000 0000 0000 0000 0000 0000 0000 0000 + ... + * + 0001000 diff --git a/Documentation/ABI/stable/sysfs-bus-usb b/Documentation/ABI/stable/sysfs-bus-usb index b832eeff9999..cad4bc232520 100644 --- a/Documentation/ABI/stable/sysfs-bus-usb +++ b/Documentation/ABI/stable/sysfs-bus-usb @@ -50,8 +50,10 @@ Description: Tools can use this file and the connected_duration file to compute the percentage of time that a device has been active. - For example, - echo $((100 * `cat active_duration` / `cat connected_duration`)) + For example:: + + echo $((100 * `cat active_duration` / `cat connected_duration`)) + will give an integer percentage. Note that this does not account for counter wrap. Users: diff --git a/Documentation/ABI/stable/sysfs-bus-vmbus b/Documentation/ABI/stable/sysfs-bus-vmbus index 8e8d167eca31..c27b7b89477c 100644 --- a/Documentation/ABI/stable/sysfs-bus-vmbus +++ b/Documentation/ABI/stable/sysfs-bus-vmbus @@ -63,13 +63,6 @@ Contact: Stephen Hemminger <sthemmin@microsoft.com> Description: VCPU (sub)channel is affinitized to Users: tools/hv/lsvmbus and other debugging tools -What: /sys/bus/vmbus/devices/<UUID>/channels/<N>/cpu -Date: September. 2017 -KernelVersion: 4.14 -Contact: Stephen Hemminger <sthemmin@microsoft.com> -Description: VCPU (sub)channel is affinitized to -Users: tools/hv/lsvmbus and other debugging tools - What: /sys/bus/vmbus/devices/<UUID>/channels/<N>/in_mask Date: September. 2017 KernelVersion: 4.14 diff --git a/Documentation/ABI/stable/sysfs-bus-w1 b/Documentation/ABI/stable/sysfs-bus-w1 index 992dfb183ed0..5cd5e872bcae 100644 --- a/Documentation/ABI/stable/sysfs-bus-w1 +++ b/Documentation/ABI/stable/sysfs-bus-w1 @@ -6,6 +6,7 @@ Description: Bus scanning interval, microseconds component. control systems are attached/generate presence for as short as 100 ms - hence the tens-to-hundreds milliseconds scan intervals are required. + see Documentation/w1/w1-generic.rst for detailed information. Users: any user space application which wants to know bus scanning interval diff --git a/Documentation/ABI/stable/sysfs-class-backlight b/Documentation/ABI/stable/sysfs-class-backlight index 70302f370e7e..023fb52645f8 100644 --- a/Documentation/ABI/stable/sysfs-class-backlight +++ b/Documentation/ABI/stable/sysfs-class-backlight @@ -4,6 +4,7 @@ KernelVersion: 2.6.12 Contact: Richard Purdie <rpurdie@rpsys.net> Description: Control BACKLIGHT power, values are FB_BLANK_* from fb.h + - FB_BLANK_UNBLANK (0) : power on. - FB_BLANK_POWERDOWN (4) : power off Users: HAL diff --git a/Documentation/ABI/stable/sysfs-class-infiniband b/Documentation/ABI/stable/sysfs-class-infiniband index 87b11f91b425..348c4ac803ad 100644 --- a/Documentation/ABI/stable/sysfs-class-infiniband +++ b/Documentation/ABI/stable/sysfs-class-infiniband @@ -8,12 +8,14 @@ Date: Apr, 2005 KernelVersion: v2.6.12 Contact: linux-rdma@vger.kernel.org Description: + =============== =========================================== node_type: (RO) Node type (CA, RNIC, usNIC, usNIC UDP, switch or router) node_guid: (RO) Node GUID sys_image_guid: (RO) System image GUID + =============== =========================================== What: /sys/class/infiniband/<device>/node_desc @@ -47,6 +49,7 @@ KernelVersion: v2.6.12 Contact: linux-rdma@vger.kernel.org Description: + =============== =============================================== lid: (RO) Port LID rate: (RO) Port data rate (active width * active @@ -66,8 +69,9 @@ Description: cap_mask: (RO) Port capability mask. 2 bits here are settable- IsCommunicationManagementSupported - (set when CM module is loaded) and IsSM (set via - open of issmN file). + (set when CM module is loaded) and IsSM (set + via open of issmN file). + =============== =============================================== What: /sys/class/infiniband/<device>/ports/<port-num>/link_layer @@ -103,8 +107,7 @@ Date: Apr, 2005 KernelVersion: v2.6.12 Contact: linux-rdma@vger.kernel.org Description: - Errors info: - ----------- + **Errors info**: symbol_error: (RO) Total number of minor link errors detected on one or more physical lanes. @@ -142,8 +145,7 @@ Description: intervention. It can also indicate hardware issues or extremely poor link signal integrity - Data info: - --------- + **Data info**: port_xmit_data: (RO) Total number of data octets, divided by 4 (lanes), transmitted on all VLs. This is 64 bit counter @@ -176,8 +178,7 @@ Description: transmitted on all VLs from the port. This may include multicast packets with errors. - Misc info: - --------- + **Misc info**: port_xmit_discards: (RO) Total number of outbound packets discarded by the port because the port is down or congested. @@ -244,9 +245,11 @@ Description: two umad devices and two issm devices, while a switch will have one device of each type (for switch port 0). + ======= ===================================== ibdev: (RO) Show Infiniband (IB) device name port: (RO) Display port number + ======= ===================================== What: /sys/class/infiniband_mad/abi_version @@ -264,10 +267,12 @@ Date: Sept, 2005 KernelVersion: v2.6.14 Contact: linux-rdma@vger.kernel.org Description: + =============== =========================================== ibdev: (RO) Display Infiniband (IB) device name abi_version: (RO) Show ABI version of IB device specific interfaces. + =============== =========================================== What: /sys/class/infiniband_verbs/abi_version @@ -289,12 +294,14 @@ Date: Apr, 2005 KernelVersion: v2.6.12 Contact: linux-rdma@vger.kernel.org Description: + =============== ================================================ hw_rev: (RO) Hardware revision number hca_type: (RO) Host Channel Adapter type: MT23108, MT25208 (MT23108 compat mode), MT25208 or MT25204 board_id: (RO) Manufacturing board ID + =============== ================================================ sysfs interface for Mellanox ConnectX HCA IB driver (mlx4) @@ -307,11 +314,13 @@ Date: Sep, 2007 KernelVersion: v2.6.24 Contact: linux-rdma@vger.kernel.org Description: + =============== =============================== hw_rev: (RO) Hardware revision number hca_type: (RO) Host channel adapter type board_id: (RO) Manufacturing board ID + =============== =============================== What: /sys/class/infiniband/mlx4_X/iov/ports/<port-num>/gids/<n> @@ -337,6 +346,7 @@ Description: example, ports/1/pkeys/10 contains the value at index 10 in port 1's P_Key table. + ======================= ========================================== gids/<n>: (RO) The physical port gids n = 0..127 admin_guids/<n>: (RW) Allows examining or changing the @@ -365,6 +375,7 @@ Description: guest, whenever it uses its pkey index 1, will actually be using the real pkey index 10. + ======================= ========================================== What: /sys/class/infiniband/mlx4_X/iov/<pci-slot-num>/ports/<m>/smi_enabled @@ -376,12 +387,14 @@ Description: Enabling QP0 on VFs for selected VF/port. By default, no VFs are enabled for QP0 operation. - smi_enabled: (RO) Indicates whether smi is currently enabled - for the indicated VF/port + ================= ==== =========================================== + smi_enabled: (RO) Indicates whether smi is currently enabled + for the indicated VF/port - enable_smi_admin:(RW) Used by the admin to request that smi - capability be enabled or disabled for the - indicated VF/port. 0 = disable, 1 = enable. + enable_smi_admin: (RW) Used by the admin to request that smi + capability be enabled or disabled for the + indicated VF/port. 0 = disable, 1 = enable. + ================= ==== =========================================== The requested enablement will occur at the next reset of the VF (e.g. driver restart on the VM which owns the VF). @@ -398,6 +411,7 @@ KernelVersion: v2.6.35 Contact: linux-rdma@vger.kernel.org Description: + =============== ============================================= hw_rev: (RO) Hardware revision number hca_type: (RO) Driver short name. Should normally match @@ -406,6 +420,7 @@ Description: board_id: (RO) Manufacturing board id. (Vendor + device information) + =============== ============================================= sysfs interface for Intel IB driver qib @@ -426,6 +441,7 @@ Date: May, 2010 KernelVersion: v2.6.35 Contact: linux-rdma@vger.kernel.org Description: + =============== ====================================================== version: (RO) Display version information of installed software and drivers. @@ -452,6 +468,7 @@ Description: chip_reset: (WO) Reset the chip if possible by writing "reset" to this file. Only allowed if no user contexts are open that use chip resources. + =============== ====================================================== What: /sys/class/infiniband/qibX/ports/N/sl2vl/[0-15] @@ -471,14 +488,16 @@ Contact: linux-rdma@vger.kernel.org Description: Per-port congestion control. Both are binary attributes. - cc_table_bin: (RO) Congestion control table size followed by + =============== ================================================ + cc_table_bin (RO) Congestion control table size followed by table entries. - cc_settings_bin:(RO) Congestion settings: port control, control + cc_settings_bin (RO) Congestion settings: port control, control map and an array of 16 entries for the congestion entries - increase, timer, event log trigger threshold and the minimum injection rate delay. + =============== ================================================ What: /sys/class/infiniband/qibX/ports/N/linkstate/loopback What: /sys/class/infiniband/qibX/ports/N/linkstate/led_override @@ -491,6 +510,7 @@ Contact: linux-rdma@vger.kernel.org Description: [to be documented] + =============== =============================================== loopback: (WO) led_override: (WO) hrtbt_enable: (RW) @@ -501,6 +521,7 @@ Description: errors. Possible states are- "Initted", "Present", "IB_link_up", "IB_configured" or "Fatal_Hardware_Error". + =============== =============================================== What: /sys/class/infiniband/qibX/ports/N/diag_counters/rc_resends What: /sys/class/infiniband/qibX/ports/N/diag_counters/seq_naks @@ -549,6 +570,7 @@ Contact: Christian Benvenuti <benve@cisco.com>, linux-rdma@vger.kernel.org Description: + =============== =============================================== board_id: (RO) Manufacturing board id config: (RO) Report the configuration for this PF @@ -561,6 +583,7 @@ Description: iface: (RO) Shows which network interface this usNIC entry is associated to (visible with ifconfig). + =============== =============================================== What: /sys/class/infiniband/usnic_X/qpn/summary What: /sys/class/infiniband/usnic_X/qpn/context @@ -605,6 +628,7 @@ Date: May, 2016 KernelVersion: v4.6 Contact: linux-rdma@vger.kernel.org Description: + =============== ============================================= hw_rev: (RO) Hardware revision number board_id: (RO) Manufacturing board id @@ -623,6 +647,7 @@ Description: available. tempsense: (RO) Thermal sense information + =============== ============================================= What: /sys/class/infiniband/hfi1_X/ports/N/CCMgtA/cc_settings_bin @@ -634,19 +659,21 @@ Contact: linux-rdma@vger.kernel.org Description: Per-port congestion control. - cc_table_bin: (RO) CCA tables used by PSM2 Congestion control + =============== ================================================ + cc_table_bin (RO) CCA tables used by PSM2 Congestion control table size followed by table entries. Binary attribute. - cc_settings_bin:(RO) Congestion settings: port control, control + cc_settings_bin (RO) Congestion settings: port control, control map and an array of 16 entries for the congestion entries - increase, timer, event log trigger threshold and the minimum injection rate delay. Binary attribute. - cc_prescan: (RW) enable prescanning for faster BECN + cc_prescan (RW) enable prescanning for faster BECN response. Write "on" to enable and "off" to disable. + =============== ================================================ What: /sys/class/infiniband/hfi1_X/ports/N/sc2vl/[0-31] What: /sys/class/infiniband/hfi1_X/ports/N/sl2sc/[0-31] @@ -655,11 +682,13 @@ Date: May, 2016 KernelVersion: v4.6 Contact: linux-rdma@vger.kernel.org Description: + =============== =================================================== sc2vl/: (RO) 32 files (0 - 31) used to translate sl->vl sl2sc/: (RO) 32 files (0 - 31) used to translate sl->sc vl2mtu/: (RO) 16 files (0 - 15) used to determine MTU for vl + =============== =================================================== What: /sys/class/infiniband/hfi1_X/sdma_N/cpu_list @@ -670,26 +699,28 @@ Contact: linux-rdma@vger.kernel.org Description: sdma<N>/ contains one directory per sdma engine (0 - 15) + =============== ============================================== cpu_list: (RW) List of cpus for user-process to sdma engine assignment. vl: (RO) Displays the virtual lane (vl) the sdma engine maps to. + =============== ============================================== This interface gives the user control on the affinity settings for the device. As an example, to set an sdma engine irq affinity and thread affinity of a user processes to use the sdma engine, which is "near" in terms of NUMA configuration, or - physical cpu location, the user will do: + physical cpu location, the user will do:: - echo "3" > /proc/irq/<N>/smp_affinity_list - echo "4-7" > /sys/devices/.../sdma3/cpu_list - cat /sys/devices/.../sdma3/vl - 0 - echo "8" > /proc/irq/<M>/smp_affinity_list - echo "9-12" > /sys/devices/.../sdma4/cpu_list - cat /sys/devices/.../sdma4/vl - 1 + echo "3" > /proc/irq/<N>/smp_affinity_list + echo "4-7" > /sys/devices/.../sdma3/cpu_list + cat /sys/devices/.../sdma3/vl + 0 + echo "8" > /proc/irq/<M>/smp_affinity_list + echo "9-12" > /sys/devices/.../sdma4/cpu_list + cat /sys/devices/.../sdma4/vl + 1 to make sure that when a process runs on cpus 4,5,6, or 7, and uses vl=0, then sdma engine 3 is selected by the driver, and @@ -711,11 +742,13 @@ Date: Jan, 2016 KernelVersion: v4.10 Contact: linux-rdma@vger.kernel.org Description: + =============== ==== ======================== hw_rev: (RO) Hardware revision number hca_type: (RO) Show HCA type (I40IW) board_id: (RO) I40IW board ID + =============== ==== ======================== sysfs interface for QLogic qedr NIC Driver @@ -728,9 +761,11 @@ KernelVersion: v4.10 Contact: linux-rdma@vger.kernel.org Description: + =============== ==== ======================== hw_rev: (RO) Hardware revision number hca_type: (RO) Display HCA type + =============== ==== ======================== sysfs interface for VMware Paravirtual RDMA driver @@ -744,11 +779,13 @@ KernelVersion: v4.10 Contact: linux-rdma@vger.kernel.org Description: + =============== ==== ===================================== hw_rev: (RO) Hardware revision number hca_type: (RO) Host channel adapter type board_id: (RO) Display PVRDMA manufacturing board ID + =============== ==== ===================================== sysfs interface for Broadcom NetXtreme-E RoCE driver @@ -760,6 +797,8 @@ Date: Feb, 2017 KernelVersion: v4.11 Contact: linux-rdma@vger.kernel.org Description: + =============== ==== ========================= hw_rev: (RO) Hardware revision number hca_type: (RO) Host channel adapter type + =============== ==== ========================= diff --git a/Documentation/ABI/stable/sysfs-class-rfkill b/Documentation/ABI/stable/sysfs-class-rfkill index 5b154f922643..037979f7dc4b 100644 --- a/Documentation/ABI/stable/sysfs-class-rfkill +++ b/Documentation/ABI/stable/sysfs-class-rfkill @@ -2,7 +2,7 @@ rfkill - radio frequency (RF) connector kill switch support For details to this subsystem look at Documentation/driver-api/rfkill.rst. -For the deprecated /sys/class/rfkill/*/claim knobs of this interface look in +For the deprecated ``/sys/class/rfkill/*/claim`` knobs of this interface look in Documentation/ABI/removed/sysfs-class-rfkill. What: /sys/class/rfkill @@ -36,9 +36,10 @@ KernelVersion v2.6.22 Contact: linux-wireless@vger.kernel.org Description: Whether the soft blocked state is initialised from non-volatile storage at startup. -Values: A numeric value. - 0: false - 1: true +Values: A numeric value: + + - 0: false + - 1: true What: /sys/class/rfkill/rfkill[0-9]+/state @@ -54,6 +55,7 @@ Description: Current state of the transmitter. through this interface. There will likely be another attempt to remove it in the future. Values: A numeric value. + 0: RFKILL_STATE_SOFT_BLOCKED transmitter is turned off by software 1: RFKILL_STATE_UNBLOCKED @@ -69,6 +71,7 @@ KernelVersion v2.6.34 Contact: linux-wireless@vger.kernel.org Description: Current hardblock state. This file is read only. Values: A numeric value. + 0: inactive The transmitter is (potentially) active. 1: active @@ -82,7 +85,9 @@ KernelVersion v2.6.34 Contact: linux-wireless@vger.kernel.org Description: Current softblock state. This file is read and write. Values: A numeric value. + 0: inactive The transmitter is (potentially) active. + 1: active The transmitter is turned off by software. diff --git a/Documentation/ABI/stable/sysfs-class-tpm b/Documentation/ABI/stable/sysfs-class-tpm index 58e94e7d55be..91ca63ec7581 100644 --- a/Documentation/ABI/stable/sysfs-class-tpm +++ b/Documentation/ABI/stable/sysfs-class-tpm @@ -32,11 +32,11 @@ KernelVersion: 2.6.12 Contact: linux-integrity@vger.kernel.org Description: The "caps" property contains TPM manufacturer and version info. - Example output: + Example output:: - Manufacturer: 0x53544d20 - TCG version: 1.2 - Firmware version: 8.16 + Manufacturer: 0x53544d20 + TCG version: 1.2 + Firmware version: 8.16 Manufacturer is a hex dump of the 4 byte manufacturer info space in a TPM. TCG version shows the TCG TPM spec level that @@ -54,9 +54,9 @@ Description: The "durations" property shows the 3 vendor-specific values any longer than necessary before starting to poll for a result. - Example output: + Example output:: - 3015000 4508000 180995000 [original] + 3015000 4508000 180995000 [original] Here the short, medium and long durations are displayed in usecs. "[original]" indicates that the values are displayed @@ -92,14 +92,14 @@ Description: The "pcrs" property will dump the current value of all Platform values may be constantly changing, the output is only valid for a snapshot in time. - Example output: + Example output:: - PCR-00: 3A 3F 78 0F 11 A4 B4 99 69 FC AA 80 CD 6E 39 57 C3 3B 22 75 - PCR-01: 3A 3F 78 0F 11 A4 B4 99 69 FC AA 80 CD 6E 39 57 C3 3B 22 75 - PCR-02: 3A 3F 78 0F 11 A4 B4 99 69 FC AA 80 CD 6E 39 57 C3 3B 22 75 - PCR-03: 3A 3F 78 0F 11 A4 B4 99 69 FC AA 80 CD 6E 39 57 C3 3B 22 75 - PCR-04: 3A 3F 78 0F 11 A4 B4 99 69 FC AA 80 CD 6E 39 57 C3 3B 22 75 - ... + PCR-00: 3A 3F 78 0F 11 A4 B4 99 69 FC AA 80 CD 6E 39 57 C3 3B 22 75 + PCR-01: 3A 3F 78 0F 11 A4 B4 99 69 FC AA 80 CD 6E 39 57 C3 3B 22 75 + PCR-02: 3A 3F 78 0F 11 A4 B4 99 69 FC AA 80 CD 6E 39 57 C3 3B 22 75 + PCR-03: 3A 3F 78 0F 11 A4 B4 99 69 FC AA 80 CD 6E 39 57 C3 3B 22 75 + PCR-04: 3A 3F 78 0F 11 A4 B4 99 69 FC AA 80 CD 6E 39 57 C3 3B 22 75 + ... The number of PCRs and hex bytes needed to represent a PCR value will vary depending on TPM chip version. For TPM 1.1 and @@ -119,44 +119,44 @@ Description: The "pubek" property will return the TPM's public endorsement ated at TPM manufacture time and exists for the life of the chip. - Example output: - - Algorithm: 00 00 00 01 - Encscheme: 00 03 - Sigscheme: 00 01 - Parameters: 00 00 08 00 00 00 00 02 00 00 00 00 - Modulus length: 256 - Modulus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ossible values: - - Algorithm: TPM_ALG_RSA (1) - Encscheme: TPM_ES_RSAESPKCSv15 (2) + Example output:: + + Algorithm: 00 00 00 01 + Encscheme: 00 03 + Sigscheme: 00 01 + Parameters: 00 00 08 00 00 00 00 02 00 00 00 00 + Modulus length: 256 + Modulus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ossible values:: + + Algorithm: TPM_ALG_RSA (1) + Encscheme: TPM_ES_RSAESPKCSv15 (2) TPM_ES_RSAESOAEP_SHA1_MGF1 (3) - Sigscheme: TPM_SS_NONE (1) - Parameters, a byte string of 3 u32 values: + Sigscheme: TPM_SS_NONE (1) + Parameters, a byte string of 3 u32 values: Key Length (bits): 00 00 08 00 (2048) Num primes: 00 00 00 02 (2) Exponent Size: 00 00 00 00 (0 means the default exp) - Modulus Length: 256 (bytes) - Modulus: The 256 byte Endorsement Key modulus + Modulus Length: 256 (bytes) + Modulus: The 256 byte Endorsement Key modulus What: /sys/class/tpm/tpmX/device/temp_deactivated Date: April 2006 @@ -176,9 +176,9 @@ Description: The "timeouts" property shows the 4 vendor-specific values timeouts is defined by the TPM interface spec that the chip conforms to. - Example output: + Example output:: - 750000 750000 750000 750000 [original] + 750000 750000 750000 750000 [original] The four timeout values are shown in usecs, with a trailing "[original]" or "[adjusted]" depending on whether the values @@ -191,6 +191,6 @@ Contact: linux-integrity@vger.kernel.org Description: The "tpm_version_major" property shows the TCG spec major version implemented by the TPM device. - Example output: + Example output:: - 2 + 2 diff --git a/Documentation/ABI/stable/sysfs-devices b/Documentation/ABI/stable/sysfs-devices index 4404bd9b96c1..42bf1eab5677 100644 --- a/Documentation/ABI/stable/sysfs-devices +++ b/Documentation/ABI/stable/sysfs-devices @@ -1,5 +1,6 @@ -# Note: This documents additional properties of any device beyond what -# is documented in Documentation/admin-guide/sysfs-rules.rst +Note: + This documents additional properties of any device beyond what + is documented in Documentation/admin-guide/sysfs-rules.rst What: /sys/devices/*/of_node Date: February 2015 diff --git a/Documentation/ABI/stable/sysfs-driver-dma-ioatdma b/Documentation/ABI/stable/sysfs-driver-dma-ioatdma index 420c1d09e42f..3a4e2cd0ddcc 100644 --- a/Documentation/ABI/stable/sysfs-driver-dma-ioatdma +++ b/Documentation/ABI/stable/sysfs-driver-dma-ioatdma @@ -1,29 +1,29 @@ -What: sys/devices/pciXXXX:XX/0000:XX:XX.X/dma/dma<n>chan<n>/quickdata/cap +What: /sys/devices/pciXXXX:XX/0000:XX:XX.X/dma/dma<n>chan<n>/quickdata/cap Date: December 3, 2009 KernelVersion: 2.6.32 Contact: dmaengine@vger.kernel.org Description: Capabilities the DMA supports.Currently there are DMA_PQ, DMA_PQ_VAL, DMA_XOR,DMA_XOR_VAL,DMA_INTERRUPT. -What: sys/devices/pciXXXX:XX/0000:XX:XX.X/dma/dma<n>chan<n>/quickdata/ring_active +What: /sys/devices/pciXXXX:XX/0000:XX:XX.X/dma/dma<n>chan<n>/quickdata/ring_active Date: December 3, 2009 KernelVersion: 2.6.32 Contact: dmaengine@vger.kernel.org Description: The number of descriptors active in the ring. -What: sys/devices/pciXXXX:XX/0000:XX:XX.X/dma/dma<n>chan<n>/quickdata/ring_size +What: /sys/devices/pciXXXX:XX/0000:XX:XX.X/dma/dma<n>chan<n>/quickdata/ring_size Date: December 3, 2009 KernelVersion: 2.6.32 Contact: dmaengine@vger.kernel.org Description: Descriptor ring size, total number of descriptors available. -What: sys/devices/pciXXXX:XX/0000:XX:XX.X/dma/dma<n>chan<n>/quickdata/version +What: /sys/devices/pciXXXX:XX/0000:XX:XX.X/dma/dma<n>chan<n>/quickdata/version Date: December 3, 2009 KernelVersion: 2.6.32 Contact: dmaengine@vger.kernel.org Description: Version of ioatdma device. -What: sys/devices/pciXXXX:XX/0000:XX:XX.X/dma/dma<n>chan<n>/quickdata/intr_coalesce +What: /sys/devices/pciXXXX:XX/0000:XX:XX.X/dma/dma<n>chan<n>/quickdata/intr_coalesce Date: August 8, 2017 KernelVersion: 4.14 Contact: dmaengine@vger.kernel.org diff --git a/Documentation/ABI/stable/sysfs-driver-firmware-zynqmp b/Documentation/ABI/stable/sysfs-driver-firmware-zynqmp index 00fa04c76ff3..f5724bb5b462 100644 --- a/Documentation/ABI/stable/sysfs-driver-firmware-zynqmp +++ b/Documentation/ABI/stable/sysfs-driver-firmware-zynqmp @@ -12,13 +12,15 @@ Description: resets. Three registers are used by the FSBL and other Xilinx software products: GLOBAL_GEN_STORAGE{4:6}. - Usage: - # cat /sys/devices/platform/firmware\:zynqmp-firmware/ggs0 - # echo <value> > /sys/devices/platform/firmware\:zynqmp-firmware/ggs0 + Usage:: + + # cat /sys/devices/platform/firmware\:zynqmp-firmware/ggs0 + # echo <value> > /sys/devices/platform/firmware\:zynqmp-firmware/ggs0 + + Example:: - Example: - # cat /sys/devices/platform/firmware\:zynqmp-firmware/ggs0 - # echo 0x1234ABCD > /sys/devices/platform/firmware\:zynqmp-firmware/ggs0 + # cat /sys/devices/platform/firmware\:zynqmp-firmware/ggs0 + # echo 0x1234ABCD > /sys/devices/platform/firmware\:zynqmp-firmware/ggs0 Users: Xilinx @@ -39,13 +41,15 @@ Description: software products: PERS_GLOB_GEN_STORAGE{4:7}. Register is reset only by a POR reset. - Usage: - # cat /sys/devices/platform/firmware\:zynqmp-firmware/pggs0 - # echo <value> > /sys/devices/platform/firmware\:zynqmp-firmware/pggs0 + Usage:: + + # cat /sys/devices/platform/firmware\:zynqmp-firmware/pggs0 + # echo <value> > /sys/devices/platform/firmware\:zynqmp-firmware/pggs0 + + Example:: - Example: - # cat /sys/devices/platform/firmware\:zynqmp-firmware/pggs0 - # echo 0x1234ABCD > /sys/devices/platform/firmware\:zynqmp-firmware/pggs0 + # cat /sys/devices/platform/firmware\:zynqmp-firmware/pggs0 + # echo 0x1234ABCD > /sys/devices/platform/firmware\:zynqmp-firmware/pggs0 Users: Xilinx @@ -61,23 +65,28 @@ Description: Following are available shutdown scopes(subtypes): - subsystem: Only the APU along with all of its peripherals + subsystem: + Only the APU along with all of its peripherals not used by other processing units will be shut down. This may result in the FPD power domain being shut down provided that no other processing unit uses FPD peripherals or DRAM. - ps_only: The complete PS will be shut down, including the + ps_only: + The complete PS will be shut down, including the RPU, PMU, etc. Only the PL domain (FPGA) remains untouched. - system: The complete system/device is shut down. + system: + The complete system/device is shut down. - Usage: - # cat /sys/devices/platform/firmware\:zynqmp-firmware/shutdown_scope - # echo <scope> > /sys/devices/platform/firmware\:zynqmp-firmware/shutdown_scope + Usage:: + + # cat /sys/devices/platform/firmware\:zynqmp-firmware/shutdown_scope + # echo <scope> > /sys/devices/platform/firmware\:zynqmp-firmware/shutdown_scope + + Example:: - Example: - # cat /sys/devices/platform/firmware\:zynqmp-firmware/shutdown_scope - # echo "subsystem" > /sys/devices/platform/firmware\:zynqmp-firmware/shutdown_scope + # cat /sys/devices/platform/firmware\:zynqmp-firmware/shutdown_scope + # echo "subsystem" > /sys/devices/platform/firmware\:zynqmp-firmware/shutdown_scope Users: Xilinx @@ -94,10 +103,13 @@ Description: system restart. Usage: - Set healthy bit - # echo 1 > /sys/devices/platform/firmware\:zynqmp-firmware/health_status - Unset healthy bit - # echo 0 > /sys/devices/platform/firmware\:zynqmp-firmware/health_status + Set healthy bit:: + + # echo 1 > /sys/devices/platform/firmware\:zynqmp-firmware/health_status + + Unset healthy bit:: + + # echo 0 > /sys/devices/platform/firmware\:zynqmp-firmware/health_status Users: Xilinx diff --git a/Documentation/ABI/stable/sysfs-driver-ib_srp b/Documentation/ABI/stable/sysfs-driver-ib_srp index 84972a57caae..bada15a329f7 100644 --- a/Documentation/ABI/stable/sysfs-driver-ib_srp +++ b/Documentation/ABI/stable/sysfs-driver-ib_srp @@ -6,6 +6,7 @@ Description: Interface for making ib_srp connect to a new target. One can request ib_srp to connect to a new target by writing a comma-separated list of login parameters to this sysfs attribute. The supported parameters are: + * id_ext, a 16-digit hexadecimal number specifying the eight byte identifier extension in the 16-byte SRP target port identifier. The target port identifier is sent by ib_srp diff --git a/Documentation/ABI/stable/sysfs-driver-speakup b/Documentation/ABI/stable/sysfs-driver-speakup index c6a32c434ce9..792f58ba327d 100644 --- a/Documentation/ABI/stable/sysfs-driver-speakup +++ b/Documentation/ABI/stable/sysfs-driver-speakup @@ -69,6 +69,7 @@ Description: Controls if typing interrupts output from speakup. With speakup if for example the say screen command is used before the entire screen is read. + With no_interrupt set to one, if the say screen command is used, and one then types on the keyboard, speakup will continue to say the whole screen regardless until @@ -215,8 +216,10 @@ Description: This file contains names for key states. Again, these are part of the help system. For instance, if you had pressed speakup + keypad 3, you would hear: "speakup keypad 3 is go to bottom edge." + The speakup key is depressed, so the name of the key state is speakup. + This part of the message comes from the states collection. What: /sys/accessibility/speakup/i18n/characters @@ -297,6 +300,7 @@ KernelVersion: 2.6 Contact: speakup@linux-speakup.org Description: Controls if punctuation is spoken by speakup, or by the synthesizer. + For example, speakup speaks ">" as "greater", while the espeak synthesizer used by the soft driver speaks "greater than". Zero lets speakup speak the punctuation. One lets the diff --git a/Documentation/ABI/stable/sysfs-firmware-efi-vars b/Documentation/ABI/stable/sysfs-firmware-efi-vars index 5def20b9019e..46ccd233e359 100644 --- a/Documentation/ABI/stable/sysfs-firmware-efi-vars +++ b/Documentation/ABI/stable/sysfs-firmware-efi-vars @@ -17,6 +17,7 @@ Description: 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: @@ -59,12 +60,14 @@ Description: 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. @@ -73,3 +76,4 @@ Description: 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-firmware-opal-dump b/Documentation/ABI/stable/sysfs-firmware-opal-dump index 32fe7f5c4880..1f74f45327ba 100644 --- a/Documentation/ABI/stable/sysfs-firmware-opal-dump +++ b/Documentation/ABI/stable/sysfs-firmware-opal-dump @@ -7,6 +7,7 @@ Description: This is only for the powerpc/powernv platform. + =============== =============================================== initiate_dump: When '1' is written to it, we will initiate a dump. Read this file for supported commands. @@ -19,8 +20,11 @@ Description: and ID of the dump, use the id and type files. Do not rely on any particular size of dump type or dump id. + =============== =============================================== Each dump has the following files: + + =============== =============================================== id: An ASCII representation of the dump ID in hex (e.g. '0x01') type: An ASCII representation of the type of @@ -39,3 +43,4 @@ Description: inaccessible. Reading this file will get a list of supported actions. + =============== =============================================== diff --git a/Documentation/ABI/stable/sysfs-firmware-opal-elog b/Documentation/ABI/stable/sysfs-firmware-opal-elog index 2536434d49d0..7c8a61a2d005 100644 --- a/Documentation/ABI/stable/sysfs-firmware-opal-elog +++ b/Documentation/ABI/stable/sysfs-firmware-opal-elog @@ -38,6 +38,7 @@ Description: For each log entry (directory), there are the following files: + ============== ================================================ id: An ASCII representation of the ID of the error log, in hex - e.g. "0x01". @@ -58,3 +59,4 @@ Description: entry will be removed from sysfs. Reading this file will list the supported operations (currently just acknowledge). + ============== ================================================ diff --git a/Documentation/ABI/stable/sysfs-hypervisor-xen b/Documentation/ABI/stable/sysfs-hypervisor-xen index 3cf5cdfcd9a8..748593c64568 100644 --- a/Documentation/ABI/stable/sysfs-hypervisor-xen +++ b/Documentation/ABI/stable/sysfs-hypervisor-xen @@ -33,6 +33,8 @@ Description: If running under Xen: Space separated list of supported guest system types. Each type is in the format: <class>-<major>.<minor>-<arch> With: + + ======== ============================================ <class>: "xen" -- x86: paravirtualized, arm: standard "hvm" -- x86 only: fully virtualized <major>: major guest interface version @@ -43,6 +45,7 @@ Description: If running under Xen: "x86_64": 64 bit x86 guest "armv7l": 32 bit arm guest "aarch64": 64 bit arm guest + ======== ============================================ What: /sys/hypervisor/properties/changeset Date: March 2009 diff --git a/Documentation/ABI/stable/vdso b/Documentation/ABI/stable/vdso index 55406ec8a35a..951838d42781 100644 --- a/Documentation/ABI/stable/vdso +++ b/Documentation/ABI/stable/vdso @@ -1,3 +1,9 @@ +What: vDSO +Date: July 2011 +KernelVersion: 3.0 +Contact: Andy Lutomirski <luto@kernel.org> +Description: + On some architectures, when the kernel loads any userspace program it 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 @@ -23,6 +29,7 @@ Unless otherwise noted, the set of symbols with any given version and the ABI of those symbols is considered stable. It may vary across architectures, though. -(As of this writing, this ABI documentation as been confirmed for x86_64. +Note: + As of this writing, this ABI documentation as been confirmed for x86_64. The maintainers of the other vDSO-using architectures should confirm - that it is correct for their architecture.) + that it is correct for their architecture. diff --git a/Documentation/ABI/testing/configfs-acpi b/Documentation/ABI/testing/configfs-acpi index 4ab4e99aa863..c09b640c3cb1 100644 --- a/Documentation/ABI/testing/configfs-acpi +++ b/Documentation/ABI/testing/configfs-acpi @@ -14,7 +14,8 @@ Description: This group contains the configuration for user defined ACPI tables. The attributes of a user define table are: - aml - a binary attribute that the user can use to + aml + - a binary attribute that the user can use to fill in the ACPI aml definitions. Once the aml data is written to this file and the file is closed the table will be loaded and ACPI devices @@ -26,11 +27,26 @@ Description: The rest of the attributes are read-only and are valid only after the table has been loaded by filling the aml entry: - signature - ASCII table signature - length - length of table in bytes, including the header - revision - ACPI Specification minor version number - oem_id - ASCII OEM identification - oem_table_id - ASCII OEM table identification - oem_revision - OEM revision number - asl_compiler_id - ASCII ASL compiler vendor ID - asl_compiler_revision - ASL compiler version + signature + - ASCII table signature + + length + - length of table in bytes, including the header + + revision + - ACPI Specification minor version number + + oem_id + - ASCII OEM identification + + oem_table_id + - ASCII OEM table identification + + oem_revision + - OEM revision number + + asl_compiler_id + - ASCII ASL compiler vendor ID + + asl_compiler_revision + - ASL compiler version diff --git a/Documentation/ABI/testing/configfs-most b/Documentation/ABI/testing/configfs-most index ed67a4d9f6d6..bc6b8bd18da4 100644 --- a/Documentation/ABI/testing/configfs-most +++ b/Documentation/ABI/testing/configfs-most @@ -15,22 +15,28 @@ KernelVersion: 5.2 Description: The attributes: - buffer_size configure the buffer size for this channel + buffer_size + configure the buffer size for this channel - subbuffer_size configure the sub-buffer size for this channel + subbuffer_size + configure the sub-buffer size for this channel (needed for synchronous and isochrnous data) - num_buffers configure number of buffers used for this + num_buffers + configure number of buffers used for this channel - datatype configure type of data that will travel over + datatype + configure type of data that will travel over this channel - direction configure whether this link will be an input + direction + configure whether this link will be an input or output - dbr_size configure DBR data buffer size (this is used + dbr_size + configure DBR data buffer size (this is used for MediaLB communication only) packets_per_xact @@ -39,18 +45,23 @@ Description: transmitted via USB (this is used for USB communication only) - device name of the device the link is to be attached to + device + name of the device the link is to be attached to - channel name of the channel the link is to be attached to + channel + name of the channel the link is to be attached to - comp_params pass parameters needed by some components + comp_params + pass parameters needed by some components - create_link write '1' to this attribute to trigger the + create_link + write '1' to this attribute to trigger the creation of the link. In case of speculative configuration, the creation is post-poned until a physical device is being attached to the bus. - destroy_link write '1' to this attribute to destroy an + destroy_link + write '1' to this attribute to destroy an active link What: /sys/kernel/config/most_video/<link> @@ -59,22 +70,28 @@ KernelVersion: 5.2 Description: The attributes: - buffer_size configure the buffer size for this channel + buffer_size + configure the buffer size for this channel - subbuffer_size configure the sub-buffer size for this channel + subbuffer_size + configure the sub-buffer size for this channel (needed for synchronous and isochrnous data) - num_buffers configure number of buffers used for this + num_buffers + configure number of buffers used for this channel - datatype configure type of data that will travel over + datatype + configure type of data that will travel over this channel - direction configure whether this link will be an input + direction + configure whether this link will be an input or output - dbr_size configure DBR data buffer size (this is used + dbr_size + configure DBR data buffer size (this is used for MediaLB communication only) packets_per_xact @@ -83,18 +100,23 @@ Description: transmitted via USB (this is used for USB communication only) - device name of the device the link is to be attached to + device + name of the device the link is to be attached to - channel name of the channel the link is to be attached to + channel + name of the channel the link is to be attached to - comp_params pass parameters needed by some components + comp_params + pass parameters needed by some components - create_link write '1' to this attribute to trigger the + create_link + write '1' to this attribute to trigger the creation of the link. In case of speculative configuration, the creation is post-poned until a physical device is being attached to the bus. - destroy_link write '1' to this attribute to destroy an + destroy_link + write '1' to this attribute to destroy an active link What: /sys/kernel/config/most_net/<link> @@ -103,22 +125,28 @@ KernelVersion: 5.2 Description: The attributes: - buffer_size configure the buffer size for this channel + buffer_size + configure the buffer size for this channel - subbuffer_size configure the sub-buffer size for this channel + subbuffer_size + configure the sub-buffer size for this channel (needed for synchronous and isochrnous data) - num_buffers configure number of buffers used for this + num_buffers + configure number of buffers used for this channel - datatype configure type of data that will travel over + datatype + configure type of data that will travel over this channel - direction configure whether this link will be an input + direction + configure whether this link will be an input or output - dbr_size configure DBR data buffer size (this is used + dbr_size + configure DBR data buffer size (this is used for MediaLB communication only) packets_per_xact @@ -127,18 +155,23 @@ Description: transmitted via USB (this is used for USB communication only) - device name of the device the link is to be attached to + device + name of the device the link is to be attached to - channel name of the channel the link is to be attached to + channel + name of the channel the link is to be attached to - comp_params pass parameters needed by some components + comp_params + pass parameters needed by some components - create_link write '1' to this attribute to trigger the + create_link + write '1' to this attribute to trigger the creation of the link. In case of speculative configuration, the creation is post-poned until a physical device is being attached to the bus. - destroy_link write '1' to this attribute to destroy an + destroy_link + write '1' to this attribute to destroy an active link What: /sys/kernel/config/most_sound/<card> @@ -147,7 +180,8 @@ KernelVersion: 5.2 Description: The attributes: - create_card write '1' to this attribute to trigger the + create_card + write '1' to this attribute to trigger the registration of the sound card with the ALSA subsystem. @@ -157,22 +191,28 @@ KernelVersion: 5.2 Description: The attributes: - buffer_size configure the buffer size for this channel + buffer_size + configure the buffer size for this channel - subbuffer_size configure the sub-buffer size for this channel + subbuffer_size + configure the sub-buffer size for this channel (needed for synchronous and isochrnous data) - num_buffers configure number of buffers used for this + num_buffers + configure number of buffers used for this channel - datatype configure type of data that will travel over + datatype + configure type of data that will travel over this channel - direction configure whether this link will be an input + direction + configure whether this link will be an input or output - dbr_size configure DBR data buffer size (this is used + dbr_size + configure DBR data buffer size (this is used for MediaLB communication only) packets_per_xact @@ -181,16 +221,21 @@ Description: transmitted via USB (this is used for USB communication only) - device name of the device the link is to be attached to + device + name of the device the link is to be attached to - channel name of the channel the link is to be attached to + channel + name of the channel the link is to be attached to - comp_params pass parameters needed by some components + comp_params + pass parameters needed by some components - create_link write '1' to this attribute to trigger the + create_link + write '1' to this attribute to trigger the creation of the link. In case of speculative configuration, the creation is post-poned until a physical device is being attached to the bus. - destroy_link write '1' to this attribute to destroy an + destroy_link + write '1' to this attribute to destroy an active link diff --git a/Documentation/ABI/testing/configfs-spear-pcie-gadget b/Documentation/ABI/testing/configfs-spear-pcie-gadget index 840c324ef34d..cf877bd341df 100644 --- a/Documentation/ABI/testing/configfs-spear-pcie-gadget +++ b/Documentation/ABI/testing/configfs-spear-pcie-gadget @@ -10,22 +10,24 @@ Description: This interfaces can be used to show spear's PCIe device capability. Nodes are only visible when configfs is mounted. To mount configfs - in /config directory use: - # mount -t configfs none /config/ + in /config directory use:: - For nth PCIe Device Controller - /config/pcie-gadget.n/ - link ... used to enable ltssm and read its status. - int_type ...used to configure and read type of supported - interrupt - no_of_msi ... used to configure number of MSI vector needed and + # mount -t configfs none /config/ + + For nth PCIe Device Controller /config/pcie-gadget.n/: + + =============== ====================================================== + link used to enable ltssm and read its status. + int_type used to configure and read type of supported interrupt + no_of_msi used to configure number of MSI vector needed and to read no of MSI granted. - inta ... write 1 to assert INTA and 0 to de-assert. - send_msi ... write MSI vector to be sent. - vendor_id ... used to write and read vendor id (hex) - device_id ... used to write and read device id (hex) - bar0_size ... used to write and read bar0_size - bar0_address ... used to write and read bar0 mapped area in hex. - bar0_rw_offset ... used to write and read offset of bar0 where - bar0_data will be written or read. - bar0_data ... used to write and read data at bar0_rw_offset. + inta write 1 to assert INTA and 0 to de-assert. + send_msi write MSI vector to be sent. + vendor_id used to write and read vendor id (hex) + device_id used to write and read device id (hex) + bar0_size used to write and read bar0_size + bar0_address used to write and read bar0 mapped area in hex. + bar0_rw_offset used to write and read offset of bar0 where bar0_data + will be written or read. + bar0_data used to write and read data at bar0_rw_offset. + =============== ====================================================== diff --git a/Documentation/ABI/testing/configfs-usb-gadget b/Documentation/ABI/testing/configfs-usb-gadget index 4594cc2435e8..dc351e9af80a 100644 --- a/Documentation/ABI/testing/configfs-usb-gadget +++ b/Documentation/ABI/testing/configfs-usb-gadget @@ -12,22 +12,24 @@ Description: The attributes of a gadget: - UDC - bind a gadget to UDC/unbind a gadget; - write UDC's name found in /sys/class/udc/* - to bind a gadget, empty string "" to unbind. - - max_speed - maximum speed the driver supports. Valid - names are super-speed-plus, super-speed, - high-speed, full-speed, and low-speed. - - bDeviceClass - USB device class code - bDeviceSubClass - USB device subclass code - bDeviceProtocol - USB device protocol code - bMaxPacketSize0 - maximum endpoint 0 packet size - bcdDevice - bcd device release number - bcdUSB - bcd USB specification version number - idProduct - product ID - idVendor - vendor ID + ================ ============================================ + UDC bind a gadget to UDC/unbind a gadget; + write UDC's name found in /sys/class/udc/* + to bind a gadget, empty string "" to unbind. + + max_speed maximum speed the driver supports. Valid + names are super-speed-plus, super-speed, + high-speed, full-speed, and low-speed. + + bDeviceClass USB device class code + bDeviceSubClass USB device subclass code + bDeviceProtocol USB device protocol code + bMaxPacketSize0 maximum endpoint 0 packet size + bcdDevice bcd device release number + bcdUSB bcd USB specification version number + idProduct product ID + idVendor vendor ID + ================ ============================================ What: /config/usb-gadget/gadget/configs Date: Jun 2013 @@ -41,8 +43,10 @@ KernelVersion: 3.11 Description: The attributes of a configuration: - bmAttributes - configuration characteristics - MaxPower - maximum power consumption from the bus + ================ ====================================== + bmAttributes configuration characteristics + MaxPower maximum power consumption from the bus + ================ ====================================== What: /config/usb-gadget/gadget/configs/config/strings Date: Jun 2013 @@ -57,7 +61,9 @@ KernelVersion: 3.11 Description: The attributes: - configuration - configuration description + ================ ========================= + configuration configuration description + ================ ========================= What: /config/usb-gadget/gadget/functions @@ -76,8 +82,10 @@ Description: The attributes: - compatible_id - 8-byte string for "Compatible ID" - sub_compatible_id - 8-byte string for "Sub Compatible ID" + ================= ===================================== + compatible_id 8-byte string for "Compatible ID" + sub_compatible_id 8-byte string for "Sub Compatible ID" + ================= ===================================== What: /config/usb-gadget/gadget/functions/<func>.<inst>/interface.<n>/<property> Date: May 2014 @@ -89,16 +97,19 @@ Description: The attributes: - type - value 1..7 for interpreting the data - 1: unicode string - 2: unicode string with environment variable - 3: binary - 4: little-endian 32-bit - 5: big-endian 32-bit - 6: unicode string with a symbolic link - 7: multiple unicode strings - data - blob of data to be interpreted depending on + ===== =============================================== + type value 1..7 for interpreting the data + + - 1: unicode string + - 2: unicode string with environment variable + - 3: binary + - 4: little-endian 32-bit + - 5: big-endian 32-bit + - 6: unicode string with a symbolic link + - 7: multiple unicode strings + data blob of data to be interpreted depending on type + ===== =============================================== What: /config/usb-gadget/gadget/strings Date: Jun 2013 @@ -113,9 +124,11 @@ KernelVersion: 3.11 Description: The attributes: - serialnumber - gadget's serial number (string) - product - gadget's product description - manufacturer - gadget's manufacturer description + ============ ================================= + serialnumber gadget's serial number (string) + product gadget's product description + manufacturer gadget's manufacturer description + ============ ================================= What: /config/usb-gadget/gadget/os_desc Date: May 2014 @@ -123,8 +136,10 @@ KernelVersion: 3.16 Description: This group contains "OS String" extension handling attributes. - use - flag turning "OS Desctiptors" support on/off - b_vendor_code - one-byte value used for custom per-device and + ============= =============================================== + use flag turning "OS Desctiptors" support on/off + b_vendor_code one-byte value used for custom per-device and per-interface requests - qw_sign - an identifier to be reported as "OS String" + qw_sign an identifier to be reported as "OS String" proper + ============= =============================================== diff --git a/Documentation/ABI/testing/configfs-usb-gadget-ecm b/Documentation/ABI/testing/configfs-usb-gadget-ecm index 0addf7704b4c..272bc1e4ce2e 100644 --- a/Documentation/ABI/testing/configfs-usb-gadget-ecm +++ b/Documentation/ABI/testing/configfs-usb-gadget-ecm @@ -4,13 +4,17 @@ KernelVersion: 3.11 Description: The attributes: - ifname - network device interface name associated with + ifname + - network device interface name associated with this function instance - qmult - queue length multiplier for high and + qmult + - queue length multiplier for high and super speed - host_addr - MAC address of host's end of this + host_addr + - MAC address of host's end of this Ethernet over USB link - dev_addr - MAC address of device's end of this + dev_addr + - MAC address of device's end of this Ethernet over USB link diff --git a/Documentation/ABI/testing/configfs-usb-gadget-eem b/Documentation/ABI/testing/configfs-usb-gadget-eem index a4c57158fcde..178c3d5fb647 100644 --- a/Documentation/ABI/testing/configfs-usb-gadget-eem +++ b/Documentation/ABI/testing/configfs-usb-gadget-eem @@ -4,11 +4,13 @@ KernelVersion: 3.11 Description: The attributes: - ifname - network device interface name associated with + ========== ============================================= + ifname network device interface name associated with this function instance - qmult - queue length multiplier for high and + qmult queue length multiplier for high and super speed - host_addr - MAC address of host's end of this + host_addr MAC address of host's end of this Ethernet over USB link - dev_addr - MAC address of device's end of this + dev_addr MAC address of device's end of this Ethernet over USB link + ========== ============================================= diff --git a/Documentation/ABI/testing/configfs-usb-gadget-hid b/Documentation/ABI/testing/configfs-usb-gadget-hid index f12e00e6baa3..748705c4cb58 100644 --- a/Documentation/ABI/testing/configfs-usb-gadget-hid +++ b/Documentation/ABI/testing/configfs-usb-gadget-hid @@ -4,8 +4,10 @@ KernelVersion: 3.19 Description: The attributes: - protocol - HID protocol to use - report_desc - blob corresponding to HID report descriptors + ============= ============================================ + protocol HID protocol to use + report_desc blob corresponding to HID report descriptors except the data passed through /dev/hidg<N> - report_length - HID report length - subclass - HID device subclass to use + report_length HID report length + subclass HID device subclass to use + ============= ============================================ diff --git a/Documentation/ABI/testing/configfs-usb-gadget-loopback b/Documentation/ABI/testing/configfs-usb-gadget-loopback index 06beefbcf061..e6c6ba5ac7ff 100644 --- a/Documentation/ABI/testing/configfs-usb-gadget-loopback +++ b/Documentation/ABI/testing/configfs-usb-gadget-loopback @@ -4,5 +4,7 @@ KernelVersion: 3.13 Description: The attributes: - qlen - depth of loopback queue - buflen - buffer length + ======= ======================= + qlen depth of loopback queue + buflen buffer length + ======= ======================= diff --git a/Documentation/ABI/testing/configfs-usb-gadget-mass-storage b/Documentation/ABI/testing/configfs-usb-gadget-mass-storage index 9931fb0d63ba..c86b63a7bb43 100644 --- a/Documentation/ABI/testing/configfs-usb-gadget-mass-storage +++ b/Documentation/ABI/testing/configfs-usb-gadget-mass-storage @@ -4,12 +4,14 @@ KernelVersion: 3.13 Description: The attributes: - stall - Set to permit function to halt bulk endpoints. + =========== ============================================== + stall Set to permit function to halt bulk endpoints. Disabled on some USB devices known not to work correctly. You should set it to true. - num_buffers - Number of pipeline buffers. Valid numbers + num_buffers Number of pipeline buffers. Valid numbers are 2..4. Available only if CONFIG_USB_GADGET_DEBUG_FILES is set. + =========== ============================================== What: /config/usb-gadget/gadget/functions/mass_storage.name/lun.name Date: Oct 2013 @@ -17,15 +19,17 @@ KernelVersion: 3.13 Description: The attributes: - file - The path to the backing file for the LUN. + =========== ============================================== + 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 + ro Flag specifying access to the LUN shall be read-only. This is implied if CD-ROM emulation is enabled as well as when it was impossible to open "filename" in R/W mode. - removable - Flag specifying that LUN shall be indicated as + removable Flag specifying that LUN shall be indicated as being removable. - cdrom - Flag specifying that LUN shall be reported as + cdrom Flag specifying that LUN shall be reported as being a CD-ROM. - nofua - Flag specifying that FUA flag + nofua Flag specifying that FUA flag in SCSI WRITE(10,12) + =========== ============================================== diff --git a/Documentation/ABI/testing/configfs-usb-gadget-midi b/Documentation/ABI/testing/configfs-usb-gadget-midi index 6b341df7249c..07389cddd51a 100644 --- a/Documentation/ABI/testing/configfs-usb-gadget-midi +++ b/Documentation/ABI/testing/configfs-usb-gadget-midi @@ -4,9 +4,11 @@ KernelVersion: 3.19 Description: The attributes: - index - index value for the USB MIDI adapter - id - ID string for the USB MIDI adapter - buflen - MIDI buffer length - qlen - USB read request queue length - in_ports - number of MIDI input ports - out_ports - number of MIDI output ports + ========== ==================================== + index index value for the USB MIDI adapter + id ID string for the USB MIDI adapter + buflen MIDI buffer length + qlen USB read request queue length + in_ports number of MIDI input ports + out_ports number of MIDI output ports + ========== ==================================== diff --git a/Documentation/ABI/testing/configfs-usb-gadget-printer b/Documentation/ABI/testing/configfs-usb-gadget-printer index 6b0714e3c605..7aa731bac2da 100644 --- a/Documentation/ABI/testing/configfs-usb-gadget-printer +++ b/Documentation/ABI/testing/configfs-usb-gadget-printer @@ -4,6 +4,8 @@ KernelVersion: 4.1 Description: The attributes: - pnp_string - Data to be passed to the host in pnp string - q_len - Number of requests per endpoint + ========== =========================================== + pnp_string Data to be passed to the host in pnp string + q_len Number of requests per endpoint + ========== =========================================== diff --git a/Documentation/ABI/testing/configfs-usb-gadget-rndis b/Documentation/ABI/testing/configfs-usb-gadget-rndis index 137399095d74..9416eda7fe93 100644 --- a/Documentation/ABI/testing/configfs-usb-gadget-rndis +++ b/Documentation/ABI/testing/configfs-usb-gadget-rndis @@ -4,14 +4,16 @@ KernelVersion: 3.11 Description: The attributes: - ifname - network device interface name associated with + ========= ============================================= + ifname network device interface name associated with this function instance - qmult - queue length multiplier for high and + qmult queue length multiplier for high and super speed - host_addr - MAC address of host's end of this + host_addr MAC address of host's end of this Ethernet over USB link - dev_addr - MAC address of device's end of this + dev_addr MAC address of device's end of this Ethernet over USB link - class - USB interface class, default is 02 (hex) - subclass - USB interface subclass, default is 06 (hex) - protocol - USB interface protocol, default is 00 (hex) + class USB interface class, default is 02 (hex) + subclass USB interface subclass, default is 06 (hex) + protocol USB interface protocol, default is 00 (hex) + ========= ============================================= diff --git a/Documentation/ABI/testing/configfs-usb-gadget-sourcesink b/Documentation/ABI/testing/configfs-usb-gadget-sourcesink index f56335af2d88..1f3d31b607b7 100644 --- a/Documentation/ABI/testing/configfs-usb-gadget-sourcesink +++ b/Documentation/ABI/testing/configfs-usb-gadget-sourcesink @@ -4,11 +4,13 @@ KernelVersion: 3.13 Description: The attributes: - pattern - 0 (all zeros), 1 (mod63), 2 (none) - isoc_interval - 1..16 - isoc_maxpacket - 0 - 1023 (fs), 0 - 1024 (hs/ss) - isoc_mult - 0..2 (hs/ss only) - isoc_maxburst - 0..15 (ss only) - buflen - buffer length - bulk_qlen - depth of queue for bulk - iso_qlen - depth of queue for iso + ============== ================================== + pattern 0 (all zeros), 1 (mod63), 2 (none) + isoc_interval 1..16 + isoc_maxpacket 0 - 1023 (fs), 0 - 1024 (hs/ss) + isoc_mult 0..2 (hs/ss only) + isoc_maxburst 0..15 (ss only) + buflen buffer length + bulk_qlen depth of queue for bulk + iso_qlen depth of queue for iso + ============== ================================== diff --git a/Documentation/ABI/testing/configfs-usb-gadget-subset b/Documentation/ABI/testing/configfs-usb-gadget-subset index 9373e2c51ea4..0061b864351f 100644 --- a/Documentation/ABI/testing/configfs-usb-gadget-subset +++ b/Documentation/ABI/testing/configfs-usb-gadget-subset @@ -4,11 +4,13 @@ KernelVersion: 3.11 Description: The attributes: - ifname - network device interface name associated with + ========== ============================================= + ifname network device interface name associated with this function instance - qmult - queue length multiplier for high and + qmult queue length multiplier for high and super speed - host_addr - MAC address of host's end of this + host_addr MAC address of host's end of this Ethernet over USB link - dev_addr - MAC address of device's end of this + dev_addr MAC address of device's end of this Ethernet over USB link + ========== ============================================= diff --git a/Documentation/ABI/testing/configfs-usb-gadget-uac1 b/Documentation/ABI/testing/configfs-usb-gadget-uac1 index abfe447c848f..dc23fd776943 100644 --- a/Documentation/ABI/testing/configfs-usb-gadget-uac1 +++ b/Documentation/ABI/testing/configfs-usb-gadget-uac1 @@ -4,11 +4,13 @@ KernelVersion: 4.14 Description: The attributes: - c_chmask - capture channel mask - c_srate - capture sampling rate - c_ssize - capture sample size (bytes) - p_chmask - playback channel mask - p_srate - playback sampling rate - p_ssize - playback sample size (bytes) - req_number - the number of pre-allocated request - for both capture and playback + ========== =================================== + c_chmask capture channel mask + c_srate capture sampling rate + c_ssize capture sample size (bytes) + p_chmask playback channel mask + p_srate playback sampling rate + p_ssize playback sample size (bytes) + req_number the number of pre-allocated request + for both capture and playback + ========== =================================== diff --git a/Documentation/ABI/testing/configfs-usb-gadget-uac2 b/Documentation/ABI/testing/configfs-usb-gadget-uac2 index 2bfdd4efa9bd..d4356c8b8cd6 100644 --- a/Documentation/ABI/testing/configfs-usb-gadget-uac2 +++ b/Documentation/ABI/testing/configfs-usb-gadget-uac2 @@ -4,9 +4,11 @@ KernelVersion: 3.18 Description: The attributes: - c_chmask - capture channel mask - c_srate - capture sampling rate - c_ssize - capture sample size (bytes) - p_chmask - playback channel mask - p_srate - playback sampling rate - p_ssize - playback sample size (bytes) + ========= ============================ + c_chmask capture channel mask + c_srate capture sampling rate + c_ssize capture sample size (bytes) + p_chmask playback channel mask + p_srate playback sampling rate + p_ssize playback sample size (bytes) + ========= ============================ diff --git a/Documentation/ABI/testing/configfs-usb-gadget-uvc b/Documentation/ABI/testing/configfs-usb-gadget-uvc index 809765bd9573..ac5e11af79a8 100644 --- a/Documentation/ABI/testing/configfs-usb-gadget-uvc +++ b/Documentation/ABI/testing/configfs-usb-gadget-uvc @@ -3,9 +3,11 @@ Date: Dec 2014 KernelVersion: 4.0 Description: UVC function directory - streaming_maxburst - 0..15 (ss only) - streaming_maxpacket - 1..1023 (fs), 1..3072 (hs/ss) - streaming_interval - 1..16 + =================== ============================= + streaming_maxburst 0..15 (ss only) + streaming_maxpacket 1..1023 (fs), 1..3072 (hs/ss) + streaming_interval 1..16 + =================== ============================= What: /config/usb-gadget/gadget/functions/uvc.name/control Date: Dec 2014 @@ -13,8 +15,11 @@ KernelVersion: 4.0 Description: Control descriptors All attributes read only: - bInterfaceNumber - USB interface number for this - streaming interface + + ================ ============================= + bInterfaceNumber USB interface number for this + streaming interface + ================ ============================= What: /config/usb-gadget/gadget/functions/uvc.name/control/class Date: Dec 2014 @@ -47,13 +52,16 @@ KernelVersion: 4.0 Description: Default output terminal descriptors All attributes read only: - iTerminal - index of string descriptor - bSourceID - id of the terminal to which this terminal + + ============== ============================================= + iTerminal index of string descriptor + bSourceID id of the terminal to which this terminal is connected - bAssocTerminal - id of the input terminal to which this output + bAssocTerminal id of the input terminal to which this output terminal is associated - wTerminalType - terminal type - bTerminalID - a non-zero id of this terminal + wTerminalType terminal type + bTerminalID a non-zero id of this terminal + ============== ============================================= What: /config/usb-gadget/gadget/functions/uvc.name/control/terminal/camera Date: Dec 2014 @@ -66,16 +74,19 @@ KernelVersion: 4.0 Description: Default camera terminal descriptors All attributes read only: - bmControls - bitmap specifying which controls are - supported for the video stream - wOcularFocalLength - the value of Locular - wObjectiveFocalLengthMax- the value of Lmin - wObjectiveFocalLengthMin- the value of Lmax - iTerminal - index of string descriptor - bAssocTerminal - id of the output terminal to which - this terminal is connected - wTerminalType - terminal type - bTerminalID - a non-zero id of this terminal + + ======================== ==================================== + bmControls bitmap specifying which controls are + supported for the video stream + wOcularFocalLength the value of Locular + wObjectiveFocalLengthMax the value of Lmin + wObjectiveFocalLengthMin the value of Lmax + iTerminal index of string descriptor + bAssocTerminal id of the output terminal to which + this terminal is connected + wTerminalType terminal type + bTerminalID a non-zero id of this terminal + ======================== ==================================== What: /config/usb-gadget/gadget/functions/uvc.name/control/processing Date: Dec 2014 @@ -88,13 +99,16 @@ KernelVersion: 4.0 Description: Default processing unit descriptors All attributes read only: - iProcessing - index of string descriptor - bmControls - bitmap specifying which controls are + + =============== ======================================== + iProcessing index of string descriptor + bmControls bitmap specifying which controls are supported for the video stream - wMaxMultiplier - maximum digital magnification x100 - bSourceID - id of the terminal to which this unit is + wMaxMultiplier maximum digital magnification x100 + bSourceID id of the terminal to which this unit is connected - bUnitID - a non-zero id of this unit + bUnitID a non-zero id of this unit + =============== ======================================== What: /config/usb-gadget/gadget/functions/uvc.name/control/header Date: Dec 2014 @@ -114,8 +128,11 @@ KernelVersion: 4.0 Description: Streaming descriptors All attributes read only: - bInterfaceNumber - USB interface number for this - streaming interface + + ================ ============================= + bInterfaceNumber USB interface number for this + streaming interface + ================ ============================= What: /config/usb-gadget/gadget/functions/uvc.name/streaming/class Date: Dec 2014 @@ -148,13 +165,16 @@ KernelVersion: 4.0 Description: Default color matching descriptors All attributes read only: - bMatrixCoefficients - matrix used to compute luma and - chroma values from the color primaries - bTransferCharacteristics- optoelectronic transfer - characteristic of the source picutre, - also called the gamma function - bColorPrimaries - color primaries and the reference - white + + ======================== ====================================== + bMatrixCoefficients matrix used to compute luma and + chroma values from the color primaries + bTransferCharacteristics optoelectronic transfer + characteristic of the source picutre, + also called the gamma function + bColorPrimaries color primaries and the reference + white + ======================== ====================================== What: /config/usb-gadget/gadget/functions/uvc.name/streaming/mjpeg Date: Dec 2014 @@ -168,47 +188,52 @@ Description: Specific MJPEG format descriptors All attributes read only, except bmaControls and bDefaultFrameIndex: - bFormatIndex - unique id for this format descriptor; + + =================== ===================================== + 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 + bmaControls this format's data for bmaControls in the streaming header - bmInterfaceFlags - specifies interlace information, + bmInterfaceFlags specifies interlace information, read-only - bAspectRatioY - the X dimension of the picture aspect + bAspectRatioY the X dimension of the picture aspect ratio, read-only - bAspectRatioX - the Y dimension of the picture aspect + bAspectRatioX the Y dimension of the picture aspect ratio, read-only - bmFlags - characteristics of this format, + bmFlags characteristics of this format, read-only - bDefaultFrameIndex - optimum frame index for this stream + bDefaultFrameIndex optimum frame index for this stream + =================== ===================================== What: /config/usb-gadget/gadget/functions/uvc.name/streaming/mjpeg/name/name Date: Dec 2014 KernelVersion: 4.0 Description: Specific MJPEG 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 - dwMaxVideoFrameBufferSize- the maximum number of bytes the - compressor will produce for a video - frame or still image - 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 + ========================= ===================================== + 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 + dwMaxVideoFrameBufferSize the maximum number of bytes the + compressor will produce for a video + frame or still image + 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/uncompressed Date: Dec 2014 @@ -220,50 +245,54 @@ Date: Dec 2014 KernelVersion: 4.0 Description: Specific uncompressed format descriptors - bFormatIndex - unique id for this format descriptor; + ================== ======================================= + 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 + bmaControls this format's data for bmaControls in the streaming header - bmInterfaceFlags - specifies interlace information, + bmInterfaceFlags specifies interlace information, read-only - bAspectRatioY - the X dimension of the picture aspect + bAspectRatioY the X dimension of the picture aspect ratio, read-only - bAspectRatioX - the Y dimension of the picture aspect + 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 + 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 + guidFormat globally unique id used to identify stream-encoding format + ================== ======================================= What: /config/usb-gadget/gadget/functions/uvc.name/streaming/uncompressed/name/name Date: Dec 2014 KernelVersion: 4.0 Description: Specific uncompressed 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 - dwMaxVideoFrameBufferSize- the maximum number of bytes the - compressor will produce for a video - frame or still image - 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 + ========================= ===================================== + 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 + dwMaxVideoFrameBufferSize the maximum number of bytes the + compressor will produce for a video + frame or still image + 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 @@ -276,17 +305,20 @@ KernelVersion: 4.0 Description: Specific streaming header descriptors All attributes read only: - bTriggerUsage - how the host software will respond to + + ==================== ===================================== + bTriggerUsage how the host software will respond to a hardware trigger interrupt event - bTriggerSupport - flag specifying if hardware + bTriggerSupport flag specifying if hardware triggering is supported - bStillCaptureMethod - method of still image caputre + bStillCaptureMethod method of still image caputre supported - bTerminalLink - id of the output terminal to which + bTerminalLink id of the output terminal to which the video endpoint of this interface is connected - bmInfo - capabilities of this video streaming + bmInfo capabilities of this video streaming interface + ==================== ===================================== What: /sys/class/udc/udc.name/device/gadget/video4linux/video.name/function_name Date: May 2018 diff --git a/Documentation/ABI/testing/debugfs-cec-error-inj b/Documentation/ABI/testing/debugfs-cec-error-inj index 5afcd78fbdb7..8debcb08a3b5 100644 --- a/Documentation/ABI/testing/debugfs-cec-error-inj +++ b/Documentation/ABI/testing/debugfs-cec-error-inj @@ -23,7 +23,7 @@ error injections without having to know the details of the driver-specific commands. Note that the output of 'error-inj' shall be valid as input to 'error-inj'. -So this must work: +So this must work:: $ cat error-inj >einj.txt $ cat einj.txt >error-inj diff --git a/Documentation/ABI/testing/debugfs-driver-habanalabs b/Documentation/ABI/testing/debugfs-driver-habanalabs index 2e9ae311e02d..c5d678d39144 100644 --- a/Documentation/ABI/testing/debugfs-driver-habanalabs +++ b/Documentation/ABI/testing/debugfs-driver-habanalabs @@ -20,9 +20,13 @@ Description: Allow the root user to disable/enable in runtime the clock 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 + + ======= ============ + 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 @@ -59,6 +63,7 @@ Description: Allows the root user to read or write directly through the the generic Linux user-space PCI mapping) because the DDR bar is very small compared to the DDR memory and only the driver can move the bar before and after the transaction. + 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 @@ -73,6 +78,7 @@ Description: Allows the root user to read or write 64 bit data directly the generic Linux user-space PCI mapping) because the DDR bar is very small compared to the DDR memory and only the driver can move the bar before and after the transaction. + 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 diff --git a/Documentation/ABI/testing/debugfs-ec b/Documentation/ABI/testing/debugfs-ec index 6546115a94da..ab6099daa8f5 100644 --- a/Documentation/ABI/testing/debugfs-ec +++ b/Documentation/ABI/testing/debugfs-ec @@ -6,7 +6,7 @@ Description: General information like which GPE is assigned to the EC and whether the global lock should get used. Knowing the EC GPE one can watch the amount of HW events related to -the EC here (XY -> GPE number from /sys/kernel/debug/ec/*/gpe): +the EC here (XY -> GPE number from `/sys/kernel/debug/ec/*/gpe`): /sys/firmware/acpi/interrupts/gpeXY The io file is binary and a userspace tool located here: @@ -14,7 +14,8 @@ ftp://ftp.suse.com/pub/people/trenn/sources/ec/ should get used to read out the 256 Embedded Controller registers or writing to them. -CAUTION: Do not write to the Embedded Controller if you don't know -what you are doing! Rebooting afterwards also is a good idea. -This can influence the way your machine is cooled and fans may -not get switched on again after you did a wrong write. +CAUTION: + Do not write to the Embedded Controller if you don't know + what you are doing! Rebooting afterwards also is a good idea. + This can influence the way your machine is cooled and fans may + not get switched on again after you did a wrong write. diff --git a/Documentation/ABI/testing/debugfs-moxtet b/Documentation/ABI/testing/debugfs-moxtet index 67b1717794d8..6eee10c3d5a1 100644 --- a/Documentation/ABI/testing/debugfs-moxtet +++ b/Documentation/ABI/testing/debugfs-moxtet @@ -2,13 +2,19 @@ What: /sys/kernel/debug/moxtet/input Date: March 2019 KernelVersion: 5.3 Contact: Marek Behún <marek.behun@nic.cz> -Description: (R) Read input from the shift registers, in hexadecimal. +Description: (Read) Read input from the shift registers, in hexadecimal. Returns N+1 bytes, where N is the number of Moxtet connected modules. The first byte is from the CPU board itself. - Example: 101214 - 10: CPU board with SD card - 12: 2 = PCIe module, 1 = IRQ not active - 14: 4 = Peridot module, 1 = IRQ not active + + Example:: + + 101214 + + == ======================================= + 10 CPU board with SD card + 12 2 = PCIe module, 1 = IRQ not active + 14 4 = Peridot module, 1 = IRQ not active + == ======================================= What: /sys/kernel/debug/moxtet/output Date: March 2019 @@ -17,7 +23,13 @@ Contact: Marek Behún <marek.behun@nic.cz> Description: (RW) Read last written value to the shift registers, in hexadecimal, or write values to the shift registers, also in hexadecimal. - Example: 0102 - 01: 01 was last written, or is to be written, to the - first module's shift register - 02: the same for second module + + Example:: + + 0102 + + == ================================================ + 01 01 was last written, or is to be written, to the + first module's shift register + 02 the same for second module + == ================================================ diff --git a/Documentation/ABI/testing/debugfs-pfo-nx-crypto b/Documentation/ABI/testing/debugfs-pfo-nx-crypto index 685d5a448423..f75a655c1531 100644 --- a/Documentation/ABI/testing/debugfs-pfo-nx-crypto +++ b/Documentation/ABI/testing/debugfs-pfo-nx-crypto @@ -4,42 +4,42 @@ KernelVersion: 3.4 Contact: Kent Yoder <key@linux.vnet.ibm.com> Description: - These debugfs interfaces are built by the nx-crypto driver, built in +These debugfs interfaces are built by the nx-crypto driver, built in arch/powerpc/crypto/nx. Error Detection =============== errors: -- A u32 providing a total count of errors since the driver was loaded. The -only errors counted here are those returned from the hcall, H_COP_OP. + A u32 providing a total count of errors since the driver was loaded. The + only errors counted here are those returned from the hcall, H_COP_OP. last_error: -- The most recent non-zero return code from the H_COP_OP hcall. -EBUSY is not -recorded here (the hcall will retry until -EBUSY goes away). + The most recent non-zero return code from the H_COP_OP hcall. -EBUSY is not + recorded here (the hcall will retry until -EBUSY goes away). last_error_pid: -- The process ID of the process who received the most recent error from the -hcall. + The process ID of the process who received the most recent error from the + hcall. Device Use ========== aes_bytes: -- The total number of bytes encrypted using AES in any of the driver's -supported modes. + The total number of bytes encrypted using AES in any of the driver's + supported modes. aes_ops: -- The total number of AES operations submitted to the hardware. + The total number of AES operations submitted to the hardware. sha256_bytes: -- The total number of bytes hashed by the hardware using SHA-256. + The total number of bytes hashed by the hardware using SHA-256. sha256_ops: -- The total number of SHA-256 operations submitted to the hardware. + The total number of SHA-256 operations submitted to the hardware. sha512_bytes: -- The total number of bytes hashed by the hardware using SHA-512. + The total number of bytes hashed by the hardware using SHA-512. sha512_ops: -- The total number of SHA-512 operations submitted to the hardware. + The total number of SHA-512 operations submitted to the hardware. diff --git a/Documentation/ABI/testing/debugfs-pktcdvd b/Documentation/ABI/testing/debugfs-pktcdvd index cf11736acb76..f6f65a4faea0 100644 --- a/Documentation/ABI/testing/debugfs-pktcdvd +++ b/Documentation/ABI/testing/debugfs-pktcdvd @@ -4,16 +4,15 @@ KernelVersion: 2.6.20 Contact: Thomas Maier <balagi@justmail.de> Description: -debugfs interface ------------------ - 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: -------- + ==== ====== ==================================== + info 0444 Lots of driver statistics and infos. + ==== ====== ==================================== + +Example:: -cat /sys/kernel/debug/pktcdvd/pktcdvd0/info + cat /sys/kernel/debug/pktcdvd/pktcdvd0/info diff --git a/Documentation/ABI/testing/debugfs-turris-mox-rwtm b/Documentation/ABI/testing/debugfs-turris-mox-rwtm index 2b3255ee68fd..326df1b74707 100644 --- a/Documentation/ABI/testing/debugfs-turris-mox-rwtm +++ b/Documentation/ABI/testing/debugfs-turris-mox-rwtm @@ -2,8 +2,13 @@ What: /sys/kernel/debug/turris-mox-rwtm/do_sign Date: Jun 2020 KernelVersion: 5.8 Contact: Marek Behún <marek.behun@nic.cz> -Description: (W) 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). - (R) The resulting signature, 136 bytes. This contains the R and - S values of the ECDSA signature, both in big-endian format. +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-wilco-ec b/Documentation/ABI/testing/debugfs-wilco-ec index 9d8d9d2def5b..682e3c09ef4d 100644 --- a/Documentation/ABI/testing/debugfs-wilco-ec +++ b/Documentation/ABI/testing/debugfs-wilco-ec @@ -27,16 +27,17 @@ Description: for writing, two for the type and at least a single byte of data. - Example: - // Request EC info type 3 (EC firmware build date) - // Corresponds with sending type 0x00f0 with - // MBOX = [38, 00, 03, 00] - $ echo 00 f0 38 00 03 00 > /sys/kernel/debug/wilco_ec/raw - // View the result. The decoded ASCII result "12/21/18" is - // included after the raw hex. - // Corresponds with MBOX = [00, 00, 31, 32, 2f, 32, 31, 38, ...] - $ cat /sys/kernel/debug/wilco_ec/raw - 00 00 31 32 2f 32 31 2f 31 38 00 38 00 01 00 2f 00 ..12/21/18.8... + Example:: + + // Request EC info type 3 (EC firmware build date) + // Corresponds with sending type 0x00f0 with + // MBOX = [38, 00, 03, 00] + $ echo 00 f0 38 00 03 00 > /sys/kernel/debug/wilco_ec/raw + // View the result. The decoded ASCII result "12/21/18" is + // included after the raw hex. + // Corresponds with MBOX = [00, 00, 31, 32, 2f, 32, 31, 38, ...] + $ cat /sys/kernel/debug/wilco_ec/raw + 00 00 31 32 2f 32 31 2f 31 38 00 38 00 01 00 2f 00 ..12/21/18.8... Note that the first 16 bytes of the received MBOX[] will be printed, even if some of the data is junk, and skipping bytes diff --git a/Documentation/ABI/testing/dell-smbios-wmi b/Documentation/ABI/testing/dell-smbios-wmi index fc919ce16008..5f3a0dc67050 100644 --- a/Documentation/ABI/testing/dell-smbios-wmi +++ b/Documentation/ABI/testing/dell-smbios-wmi @@ -10,29 +10,29 @@ Description: <uapi/linux/wmi.h> 1) To perform an SMBIOS call from userspace, you'll need to - first determine the minimum size of the calling interface - buffer for your machine. - Platforms that contain larger buffers can return larger - objects from the system firmware. - Commonly this size is either 4k or 32k. + first determine the minimum size of the calling interface + buffer for your machine. + Platforms that contain larger buffers can return larger + objects from the system firmware. + Commonly this size is either 4k or 32k. - To determine the size of the buffer read() a u64 dword from - the WMI character device /dev/wmi/dell-smbios. + To determine the size of the buffer read() a u64 dword from + the WMI character device /dev/wmi/dell-smbios. 2) After you've determined the minimum size of the calling - interface buffer, you can allocate a structure that represents - the structure documented above. + interface buffer, you can allocate a structure that represents + the structure documented above. 3) In the 'length' object store the size of the buffer you - determined above and allocated. + determined above and allocated. 4) In this buffer object, prepare as necessary for the SMBIOS - call you're interested in. Typically SMBIOS buffers have - "class", "select", and "input" defined to values that coincide - with the data you are interested in. - Documenting class/select/input values is outside of the scope - of this documentation. Check with the libsmbios project for - further documentation on these values. + call you're interested in. Typically SMBIOS buffers have + "class", "select", and "input" defined to values that coincide + with the data you are interested in. + Documenting class/select/input values is outside of the scope + of this documentation. Check with the libsmbios project for + further documentation on these values. 6) Run the call by using ioctl() as described in the header. diff --git a/Documentation/ABI/testing/dev-kmsg b/Documentation/ABI/testing/dev-kmsg index 3c0bb76e3417..a377b6c093c9 100644 --- a/Documentation/ABI/testing/dev-kmsg +++ b/Documentation/ABI/testing/dev-kmsg @@ -6,6 +6,7 @@ Description: The /dev/kmsg character device node provides userspace access to the kernel's printk buffer. Injecting messages: + Every write() to the opened device node places a log entry in the kernel's printk buffer. @@ -21,6 +22,7 @@ Description: The /dev/kmsg character device node provides userspace access the messages can always be reliably determined. Accessing the buffer: + Every read() from the opened device node receives one record of the kernel's printk buffer. @@ -48,6 +50,7 @@ Description: The /dev/kmsg character device node provides userspace access if needed, without limiting the interface to a single reader. The device supports seek with the following parameters: + SEEK_SET, 0 seek to the first entry in the buffer SEEK_END, 0 @@ -87,18 +90,22 @@ Description: The /dev/kmsg character device node provides userspace access readable context of the message, for reliable processing in userspace. - Example: - 7,160,424069,-;pci_root PNP0A03:00: host bridge window [io 0x0000-0x0cf7] (ignored) - SUBSYSTEM=acpi - DEVICE=+acpi:PNP0A03:00 - 6,339,5140900,-;NET: Registered protocol family 10 - 30,340,5690716,-;udevd[80]: starting version 181 + Example:: + + 7,160,424069,-;pci_root PNP0A03:00: host bridge window [io 0x0000-0x0cf7] (ignored) + SUBSYSTEM=acpi + DEVICE=+acpi:PNP0A03:00 + 6,339,5140900,-;NET: Registered protocol family 10 + 30,340,5690716,-;udevd[80]: starting version 181 The DEVICE= key uniquely identifies devices the following way: - b12:8 - block dev_t - c127:3 - char dev_t - n8 - netdev ifindex - +sound:card0 - subsystem:devname + + ============ ================= + b12:8 block dev_t + c127:3 char dev_t + n8 netdev ifindex + +sound:card0 subsystem:devname + ============ ================= The flags field carries '-' by default. A 'c' indicates a fragment of a line. Note, that these hints about continuation diff --git a/Documentation/ABI/testing/evm b/Documentation/ABI/testing/evm index 201d10319fa1..3c477ba48a31 100644 --- a/Documentation/ABI/testing/evm +++ b/Documentation/ABI/testing/evm @@ -17,26 +17,33 @@ Description: echoing a value to <securityfs>/evm made up of the following bits: + === ================================================== Bit Effect + === ================================================== 0 Enable HMAC validation and creation 1 Enable digital signature validation 2 Permit modification of EVM-protected metadata at runtime. Not supported if HMAC validation and creation is enabled. 31 Disable further runtime modification of EVM policy + === ================================================== - For example: + For example:: - echo 1 ><securityfs>/evm + echo 1 ><securityfs>/evm will enable HMAC validation and creation - echo 0x80000003 ><securityfs>/evm + :: + + echo 0x80000003 ><securityfs>/evm will enable HMAC and digital signature validation and HMAC creation and disable all further modification of policy. - echo 0x80000006 ><securityfs>/evm + :: + + echo 0x80000006 ><securityfs>/evm will enable digital signature validation, permit modification of EVM-protected metadata and @@ -65,7 +72,7 @@ Description: Shows the set of extended attributes used to calculate or validate the EVM signature, and allows additional attributes to be added at runtime. Any signatures generated after - additional attributes are added (and on files posessing those + additional attributes are added (and on files possessing those additional attributes) will only be valid if the same additional attributes are configured on system boot. Writing a single period (.) will lock the xattr list from any further diff --git a/Documentation/ABI/testing/gpio-cdev b/Documentation/ABI/testing/gpio-cdev index 7b265fbb47e3..66bdcd188b6c 100644 --- a/Documentation/ABI/testing/gpio-cdev +++ b/Documentation/ABI/testing/gpio-cdev @@ -12,15 +12,16 @@ Description: The following file operations are supported: open(2) - Currently the only useful flags are O_RDWR. + Currently the only useful flags are O_RDWR. ioctl(2) - Initiate various actions. - See the inline documentation in [include/uapi]<linux/gpio.h> - for descriptions of all ioctls. + Initiate various actions. + + See the inline documentation in [include/uapi]<linux/gpio.h> + for descriptions of all ioctls. close(2) - Stops and free up the I/O contexts that was associated - with the file descriptor. + Stops and free up the I/O contexts that was associated + with the file descriptor. Users: TBD diff --git a/Documentation/ABI/testing/ima_policy b/Documentation/ABI/testing/ima_policy index cd572912c593..e35263f97fc1 100644 --- a/Documentation/ABI/testing/ima_policy +++ b/Documentation/ABI/testing/ima_policy @@ -15,19 +15,22 @@ Description: IMA appraisal, if configured, uses these file measurements for local measurement appraisal. - rule format: action [condition ...] + :: - action: measure | dont_measure | appraise | dont_appraise | - audit | hash | dont_hash - condition:= base | lsm [option] + rule format: action [condition ...] + + action: measure | dont_measure | appraise | dont_appraise | + audit | hash | dont_hash + condition:= base | lsm [option] base: [[func=] [mask=] [fsmagic=] [fsuuid=] [uid=] [euid=] [fowner=] [fsname=]] lsm: [[subj_user=] [subj_role=] [subj_type=] [obj_user=] [obj_role=] [obj_type=]] option: [[appraise_type=]] [template=] [permit_directio] [appraise_flag=] [keyrings=] - base: func:= [BPRM_CHECK][MMAP_CHECK][CREDS_CHECK][FILE_CHECK][MODULE_CHECK] - [FIRMWARE_CHECK] + base: + func:= [BPRM_CHECK][MMAP_CHECK][CREDS_CHECK][FILE_CHECK]MODULE_CHECK] + [FIRMWARE_CHECK] [KEXEC_KERNEL_CHECK] [KEXEC_INITRAMFS_CHECK] [KEXEC_CMDLINE] [KEY_CHECK] mask:= [[^]MAY_READ] [[^]MAY_WRITE] [[^]MAY_APPEND] @@ -37,8 +40,9 @@ Description: uid:= decimal value euid:= decimal value fowner:= decimal value - lsm: are LSM specific - option: appraise_type:= [imasig] [imasig|modsig] + 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. @@ -49,7 +53,7 @@ Description: (eg, ima-ng). Only valid when action is "measure". pcr:= decimal value - default policy: + default policy: # PROC_SUPER_MAGIC dont_measure fsmagic=0x9fa0 dont_appraise fsmagic=0x9fa0 @@ -97,7 +101,8 @@ Description: Examples of LSM specific definitions: - SELinux: + SELinux:: + dont_measure obj_type=var_log_t dont_appraise obj_type=var_log_t dont_measure obj_type=auditd_log_t @@ -105,10 +110,11 @@ Description: measure subj_user=system_u func=FILE_CHECK mask=MAY_READ measure subj_role=system_r func=FILE_CHECK mask=MAY_READ - Smack: + Smack:: + measure subj_user=_ func=FILE_CHECK mask=MAY_READ - Example of measure rules using alternate PCRs: + Example of measure rules using alternate PCRs:: measure func=KEXEC_KERNEL_CHECK pcr=4 measure func=KEXEC_INITRAMFS_CHECK pcr=5 diff --git a/Documentation/ABI/testing/procfs-diskstats b/Documentation/ABI/testing/procfs-diskstats index 70dcaf2481f4..e58d641443d3 100644 --- a/Documentation/ABI/testing/procfs-diskstats +++ b/Documentation/ABI/testing/procfs-diskstats @@ -6,32 +6,38 @@ Description: of block devices. Each line contains the following 14 fields: - 1 - major number - 2 - minor mumber - 3 - device name - 4 - reads completed successfully - 5 - reads merged - 6 - sectors read - 7 - time spent reading (ms) - 8 - writes completed - 9 - writes merged - 10 - sectors written - 11 - time spent writing (ms) - 12 - I/Os currently in progress - 13 - time spent doing I/Os (ms) - 14 - weighted time spent doing I/Os (ms) + == =================================== + 1 major number + 2 minor mumber + 3 device name + 4 reads completed successfully + 5 reads merged + 6 sectors read + 7 time spent reading (ms) + 8 writes completed + 9 writes merged + 10 sectors written + 11 time spent writing (ms) + 12 I/Os currently in progress + 13 time spent doing I/Os (ms) + 14 weighted time spent doing I/Os (ms) + == =================================== Kernel 4.18+ appends four more fields for discard tracking putting the total at 18: - 15 - discards completed successfully - 16 - discards merged - 17 - sectors discarded - 18 - time spent discarding + == =================================== + 15 discards completed successfully + 16 discards merged + 17 sectors discarded + 18 time spent discarding + == =================================== Kernel 5.5+ appends two more fields for flush requests: - 19 - flush requests completed successfully - 20 - time spent flushing + == ===================================== + 19 flush requests completed successfully + 20 time spent flushing + == ===================================== For more details refer to Documentation/admin-guide/iostats.rst diff --git a/Documentation/ABI/testing/procfs-smaps_rollup b/Documentation/ABI/testing/procfs-smaps_rollup index 046978193368..a4e31c465194 100644 --- a/Documentation/ABI/testing/procfs-smaps_rollup +++ b/Documentation/ABI/testing/procfs-smaps_rollup @@ -14,28 +14,28 @@ Description: For more details, see Documentation/filesystems/proc.rst and the procfs man page. - Typical output looks like this: + Typical output looks like this:: - 00100000-ff709000 ---p 00000000 00:00 0 [rollup] - Size: 1192 kB - KernelPageSize: 4 kB - MMUPageSize: 4 kB - Rss: 884 kB - Pss: 385 kB - Pss_Anon: 301 kB - Pss_File: 80 kB - Pss_Shmem: 4 kB - Shared_Clean: 696 kB - Shared_Dirty: 0 kB - Private_Clean: 120 kB - Private_Dirty: 68 kB - Referenced: 884 kB - Anonymous: 68 kB - LazyFree: 0 kB - AnonHugePages: 0 kB - ShmemPmdMapped: 0 kB - Shared_Hugetlb: 0 kB - Private_Hugetlb: 0 kB - Swap: 0 kB - SwapPss: 0 kB - Locked: 385 kB + 00100000-ff709000 ---p 00000000 00:00 0 [rollup] + Size: 1192 kB + KernelPageSize: 4 kB + MMUPageSize: 4 kB + Rss: 884 kB + Pss: 385 kB + Pss_Anon: 301 kB + Pss_File: 80 kB + Pss_Shmem: 4 kB + Shared_Clean: 696 kB + Shared_Dirty: 0 kB + Private_Clean: 120 kB + Private_Dirty: 68 kB + Referenced: 884 kB + Anonymous: 68 kB + LazyFree: 0 kB + AnonHugePages: 0 kB + ShmemPmdMapped: 0 kB + Shared_Hugetlb: 0 kB + Private_Hugetlb: 0 kB + Swap: 0 kB + SwapPss: 0 kB + Locked: 385 kB diff --git a/Documentation/ABI/testing/pstore b/Documentation/ABI/testing/pstore index d45209abdb1b..5b02540781a2 100644 --- a/Documentation/ABI/testing/pstore +++ b/Documentation/ABI/testing/pstore @@ -9,25 +9,25 @@ Description: Generic interface to platform dependent persistent storage. provide a generic interface to show records captured in the dying moments. In the case of a panic the last part of the console log is captured, but other interesting - data can also be saved. + data can also be saved:: - # mount -t pstore -o kmsg_bytes=8000 - /sys/fs/pstore + # mount -t pstore -o kmsg_bytes=8000 - /sys/fs/pstore - $ ls -l /sys/fs/pstore/ - total 0 - -r--r--r-- 1 root root 7896 Nov 30 15:38 dmesg-erst-1 + $ ls -l /sys/fs/pstore/ + total 0 + -r--r--r-- 1 root root 7896 Nov 30 15:38 dmesg-erst-1 Different users of this interface will result in different filename prefixes. Currently two are defined: - "dmesg" - saved console log - "mce" - architecture dependent data from fatal h/w error + - "dmesg" - saved console log + - "mce" - architecture dependent data from fatal h/w error Once the information in a file has been read, removing the file will signal to the underlying persistent storage - device that it can reclaim the space for later re-use. + device that it can reclaim the space for later re-use:: - $ rm /sys/fs/pstore/dmesg-erst-1 + $ rm /sys/fs/pstore/dmesg-erst-1 The expectation is that all files in /sys/fs/pstore/ will be saved elsewhere and erased from persistent store @@ -44,4 +44,3 @@ Description: Generic interface to platform dependent persistent storage. backends are available, the preferred backend may be set by passing the pstore.backend= argument to the kernel at boot time. - diff --git a/Documentation/ABI/testing/sysfs-block b/Documentation/ABI/testing/sysfs-block index 2322eb748b38..e34cdeeeb9d4 100644 --- a/Documentation/ABI/testing/sysfs-block +++ b/Documentation/ABI/testing/sysfs-block @@ -4,23 +4,27 @@ Contact: Jerome Marchand <jmarchan@redhat.com> Description: The /sys/block/<disk>/stat files displays the I/O statistics of disk <disk>. They contain 11 fields: - 1 - reads completed successfully - 2 - reads merged - 3 - sectors read - 4 - time spent reading (ms) - 5 - writes completed - 6 - writes merged - 7 - sectors written - 8 - time spent writing (ms) - 9 - I/Os currently in progress - 10 - time spent doing I/Os (ms) - 11 - weighted time spent doing I/Os (ms) - 12 - discards completed - 13 - discards merged - 14 - sectors discarded - 15 - time spent discarding (ms) - 16 - flush requests completed - 17 - time spent flushing (ms) + + == ============================================== + 1 reads completed successfully + 2 reads merged + 3 sectors read + 4 time spent reading (ms) + 5 writes completed + 6 writes merged + 7 sectors written + 8 time spent writing (ms) + 9 I/Os currently in progress + 10 time spent doing I/Os (ms) + 11 weighted time spent doing I/Os (ms) + 12 discards completed + 13 discards merged + 14 sectors discarded + 15 time spent discarding (ms) + 16 flush requests completed + 17 time spent flushing (ms) + == ============================================== + For more details refer Documentation/admin-guide/iostats.rst diff --git a/Documentation/ABI/testing/sysfs-block-device b/Documentation/ABI/testing/sysfs-block-device index 17f2bc7dd261..aa0fb500e3c9 100644 --- a/Documentation/ABI/testing/sysfs-block-device +++ b/Documentation/ABI/testing/sysfs-block-device @@ -8,11 +8,13 @@ Description: It has the following valid values: + == ======================================================== 0 OFF - the LED is not activated on activity 1 BLINK_ON - the LED blinks on every 10ms when activity is detected. 2 BLINK_OFF - the LED is on when idle, and blinks off every 10ms when activity is detected. + == ======================================================== Note that the user must turn sw_activity OFF it they wish to control the activity LED via the em_message file. diff --git a/Documentation/ABI/testing/sysfs-block-rnbd b/Documentation/ABI/testing/sysfs-block-rnbd index 8f070b47f361..14a6fe9422b3 100644 --- a/Documentation/ABI/testing/sysfs-block-rnbd +++ b/Documentation/ABI/testing/sysfs-block-rnbd @@ -9,9 +9,9 @@ Description: To unmap a volume, "normal" or "force" has to be written to: is using the device. When "force" is used, the device is also unmapped when device is in use. All I/Os that are in progress will fail. - Example: + Example:: - # echo "normal" > /sys/block/rnbd0/rnbd/unmap_device + # echo "normal" > /sys/block/rnbd0/rnbd/unmap_device What: /sys/block/rnbd<N>/rnbd/state Date: Feb 2020 diff --git a/Documentation/ABI/testing/sysfs-bus-acpi b/Documentation/ABI/testing/sysfs-bus-acpi index e7898cfe5fb1..58abacf59b2a 100644 --- a/Documentation/ABI/testing/sysfs-bus-acpi +++ b/Documentation/ABI/testing/sysfs-bus-acpi @@ -5,6 +5,7 @@ Description: This attribute indicates the full path of ACPI namespace object associated with the device object. For example, \_SB_.PCI0. + This file is not present for device objects representing fixed ACPI hardware features (like power and sleep buttons). @@ -67,14 +68,16 @@ Description: The return value is a decimal integer representing the device's status bitmap: - Bit [0] – Set if the device is present. - Bit [1] – Set if the device is enabled and decoding its - resources. - Bit [2] – Set if the device should be shown in the UI. - Bit [3] – Set if the device is functioning properly (cleared if - device failed its diagnostics). - Bit [4] – Set if the battery is present. - Bits [31:5] – Reserved (must be cleared) + =========== ================================================== + Bit [0] Set if the device is present. + Bit [1] Set if the device is enabled and decoding its + resources. + Bit [2] Set if the device should be shown in the UI. + Bit [3] Set if the device is functioning properly (cleared + if device failed its diagnostics). + Bit [4] Set if the battery is present. + Bits [31:5] Reserved (must be cleared) + =========== ================================================== If bit [0] is clear, then bit 1 must also be clear (a device that is not present cannot be enabled). diff --git a/Documentation/ABI/testing/sysfs-bus-coresight-devices-cti b/Documentation/ABI/testing/sysfs-bus-coresight-devices-cti index 9d11502b4390..bf2869c413e7 100644 --- a/Documentation/ABI/testing/sysfs-bus-coresight-devices-cti +++ b/Documentation/ABI/testing/sysfs-bus-coresight-devices-cti @@ -8,50 +8,50 @@ What: /sys/bus/coresight/devices/<cti-name>/powered Date: March 2020 KernelVersion 5.7 Contact: Mike Leach or Mathieu Poirier -Description: (R) Indicate if the CTI hardware is powered. +Description: (Read) Indicate if the CTI hardware is powered. What: /sys/bus/coresight/devices/<cti-name>/ctmid Date: March 2020 KernelVersion 5.7 Contact: Mike Leach or Mathieu Poirier -Description: (R) Display the associated CTM ID +Description: (Read) Display the associated CTM ID What: /sys/bus/coresight/devices/<cti-name>/nr_trigger_cons Date: March 2020 KernelVersion 5.7 Contact: Mike Leach or Mathieu Poirier -Description: (R) Number of devices connected to triggers on this CTI +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 Contact: Mike Leach or Mathieu Poirier -Description: (R) Name of connected device <N> +Description: (Read) Name of connected device <N> What: /sys/bus/coresight/devices/<cti-name>/triggers<N>/in_signals Date: March 2020 KernelVersion 5.7 Contact: Mike Leach or Mathieu Poirier -Description: (R) Input trigger signals from connected device <N> +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 Contact: Mike Leach or Mathieu Poirier -Description: (R) Functional types for the input trigger signals +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 Contact: Mike Leach or Mathieu Poirier -Description: (R) Output trigger signals to connected device <N> +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 Contact: Mike Leach or Mathieu Poirier -Description: (R) Functional types for the output trigger signals +Description: (Read) Functional types for the output trigger signals to connected device <N> What: /sys/bus/coresight/devices/<cti-name>/regs/inout_sel @@ -88,7 +88,7 @@ What: /sys/bus/coresight/devices/<cti-name>/regs/intack Date: March 2020 KernelVersion 5.7 Contact: Mike Leach or Mathieu Poirier -Description: (W) Write the INTACK register. +Description: (Write) Write the INTACK register. What: /sys/bus/coresight/devices/<cti-name>/regs/appset Date: March 2020 @@ -101,99 +101,99 @@ What: /sys/bus/coresight/devices/<cti-name>/regs/appclear Date: March 2020 KernelVersion 5.7 Contact: Mike Leach or Mathieu Poirier -Description: (W) Write APPCLEAR register to deactivate channel. +Description: (Write) Write APPCLEAR register to deactivate channel. What: /sys/bus/coresight/devices/<cti-name>/regs/apppulse Date: March 2020 KernelVersion 5.7 Contact: Mike Leach or Mathieu Poirier -Description: (W) Write APPPULSE to pulse a channel active for one clock +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 Contact: Mike Leach or Mathieu Poirier -Description: (R) Read current status of channel inputs. +Description: (Read) Read current status of channel inputs. What: /sys/bus/coresight/devices/<cti-name>/regs/choutstatus Date: March 2020 KernelVersion 5.7 Contact: Mike Leach or Mathieu Poirier -Description: (R) read current status of channel outputs. +Description: (Read) read current status of channel outputs. What: /sys/bus/coresight/devices/<cti-name>/regs/triginstatus Date: March 2020 KernelVersion 5.7 Contact: Mike Leach or Mathieu Poirier -Description: (R) read current status of input trigger signals +Description: (Read) read current status of input trigger signals What: /sys/bus/coresight/devices/<cti-name>/regs/trigoutstatus Date: March 2020 KernelVersion 5.7 Contact: Mike Leach or Mathieu Poirier -Description: (R) read current status of output trigger signals. +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 Contact: Mike Leach or Mathieu Poirier -Description: (W) Attach a CTI input trigger to a CTM channel. +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 Contact: Mike Leach or Mathieu Poirier -Description: (W) Detach a CTI input trigger from a CTM channel. +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 Contact: Mike Leach or Mathieu Poirier -Description: (W) Attach a CTI output trigger to a CTM channel. +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 Contact: Mike Leach or Mathieu Poirier -Description: (W) Detach a CTI output trigger from a CTM channel. +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 Contact: Mike Leach or Mathieu Poirier -Description: (RW) Enable CTIGATE for single channel (W) or list enabled +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 Contact: Mike Leach or Mathieu Poirier -Description: (W) Disable CTIGATE for single channel. +Description: (Write) Disable CTIGATE for single channel. What: /sys/bus/coresight/devices/<cti-name>/channels/chan_set Date: March 2020 KernelVersion 5.7 Contact: Mike Leach or Mathieu Poirier -Description: (W) Activate a single channel. +Description: (Write) Activate a single channel. What: /sys/bus/coresight/devices/<cti-name>/channels/chan_clear Date: March 2020 KernelVersion 5.7 Contact: Mike Leach or Mathieu Poirier -Description: (W) Deactivate a single channel. +Description: (Write) Deactivate a single channel. What: /sys/bus/coresight/devices/<cti-name>/channels/chan_pulse Date: March 2020 KernelVersion 5.7 Contact: Mike Leach or Mathieu Poirier -Description: (W) Pulse a single channel - activate for a single clock cycle. +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 Contact: Mike Leach or Mathieu Poirier -Description: (R) List of output triggers filtered across all connections. +Description: (Read) List of output triggers filtered across all connections. What: /sys/bus/coresight/devices/<cti-name>/channels/trig_filter_enable Date: March 2020 @@ -205,13 +205,13 @@ What: /sys/bus/coresight/devices/<cti-name>/channels/chan_inuse Date: March 2020 KernelVersion 5.7 Contact: Mike Leach or Mathieu Poirier -Description: (R) show channels with at least one attached trigger signal. +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 Contact: Mike Leach or Mathieu Poirier -Description: (R) show channels with no attached trigger signals. +Description: (Read) show channels with no attached trigger signals. What: /sys/bus/coresight/devices/<cti-name>/channels/chan_xtrigs_sel Date: March 2020 @@ -224,18 +224,18 @@ What: /sys/bus/coresight/devices/<cti-name>/channels/chan_xtrigs_in Date: March 2020 KernelVersion 5.7 Contact: Mike Leach or Mathieu Poirier -Description: (R) Read to see input triggers connected to selected view +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 Contact: Mike Leach or Mathieu Poirier -Description: (R) Read to see output triggers connected to selected view +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 Contact: Mike Leach or Mathieu Poirier -Description: (W) Clear all channel / trigger programming. +Description: (Write) Clear all channel / trigger programming. diff --git a/Documentation/ABI/testing/sysfs-bus-coresight-devices-etb10 b/Documentation/ABI/testing/sysfs-bus-coresight-devices-etb10 index b5f526081711..9a383f6a74eb 100644 --- a/Documentation/ABI/testing/sysfs-bus-coresight-devices-etb10 +++ b/Documentation/ABI/testing/sysfs-bus-coresight-devices-etb10 @@ -4,7 +4,10 @@ KernelVersion: 3.19 Contact: Mathieu Poirier <mathieu.poirier@linaro.org> Description: (RW) Add/remove a sink from a trace path. There can be multiple source for a single sink. - ex: echo 1 > /sys/bus/coresight/devices/20010000.etb/enable_sink + + ex:: + + echo 1 > /sys/bus/coresight/devices/20010000.etb/enable_sink What: /sys/bus/coresight/devices/<memory_map>.etb/trigger_cntr Date: November 2014 @@ -20,21 +23,21 @@ What: /sys/bus/coresight/devices/<memory_map>.etb/mgmt/rdp Date: March 2016 KernelVersion: 4.7 Contact: Mathieu Poirier <mathieu.poirier@linaro.org> -Description: (R) Defines the depth, in words, of the trace RAM in powers of +Description: (Read) Defines the depth, in words, of the trace RAM in powers of 2. The value is read directly from HW register RDP, 0x004. What: /sys/bus/coresight/devices/<memory_map>.etb/mgmt/sts Date: March 2016 KernelVersion: 4.7 Contact: Mathieu Poirier <mathieu.poirier@linaro.org> -Description: (R) Shows the value held by the ETB status register. The value +Description: (Read) Shows the value held by the ETB status register. The value is read directly from HW register STS, 0x00C. What: /sys/bus/coresight/devices/<memory_map>.etb/mgmt/rrp Date: March 2016 KernelVersion: 4.7 Contact: Mathieu Poirier <mathieu.poirier@linaro.org> -Description: (R) Shows the value held by the ETB RAM Read Pointer register +Description: (Read) Shows the value held by the ETB RAM Read Pointer register that is used to read entries from the Trace RAM over the APB interface. The value is read directly from HW register RRP, 0x014. @@ -43,7 +46,7 @@ What: /sys/bus/coresight/devices/<memory_map>.etb/mgmt/rwp Date: March 2016 KernelVersion: 4.7 Contact: Mathieu Poirier <mathieu.poirier@linaro.org> -Description: (R) Shows the value held by the ETB RAM Write Pointer register +Description: (Read) Shows the value held by the ETB RAM Write Pointer register that is used to sets the write pointer to write entries from the CoreSight bus into the Trace RAM. The value is read directly from HW register RWP, 0x018. @@ -52,21 +55,21 @@ What: /sys/bus/coresight/devices/<memory_map>.etb/mgmt/trg Date: March 2016 KernelVersion: 4.7 Contact: Mathieu Poirier <mathieu.poirier@linaro.org> -Description: (R) Similar to "trigger_cntr" above except that this value is +Description: (Read) Similar to "trigger_cntr" above except that this value is read directly from HW register TRG, 0x01C. What: /sys/bus/coresight/devices/<memory_map>.etb/mgmt/ctl Date: March 2016 KernelVersion: 4.7 Contact: Mathieu Poirier <mathieu.poirier@linaro.org> -Description: (R) Shows the value held by the ETB Control register. The value +Description: (Read) Shows the value held by the ETB Control register. The value is read directly from HW register CTL, 0x020. What: /sys/bus/coresight/devices/<memory_map>.etb/mgmt/ffsr Date: March 2016 KernelVersion: 4.7 Contact: Mathieu Poirier <mathieu.poirier@linaro.org> -Description: (R) Shows the value held by the ETB Formatter and Flush Status +Description: (Read) Shows the value held by the ETB Formatter and Flush Status register. The value is read directly from HW register FFSR, 0x300. @@ -74,6 +77,6 @@ What: /sys/bus/coresight/devices/<memory_map>.etb/mgmt/ffcr Date: March 2016 KernelVersion: 4.7 Contact: Mathieu Poirier <mathieu.poirier@linaro.org> -Description: (R) Shows the value held by the ETB Formatter and Flush Control +Description: (Read) Shows the value held by the ETB Formatter and Flush Control register. The value is read directly from HW register FFCR, 0x304. diff --git a/Documentation/ABI/testing/sysfs-bus-coresight-devices-etm3x b/Documentation/ABI/testing/sysfs-bus-coresight-devices-etm3x index 924265a1295d..651602a61eac 100644 --- a/Documentation/ABI/testing/sysfs-bus-coresight-devices-etm3x +++ b/Documentation/ABI/testing/sysfs-bus-coresight-devices-etm3x @@ -146,28 +146,28 @@ What: /sys/bus/coresight/devices/<memory_map>.[etm|ptm]/nr_addr_cmp Date: November 2014 KernelVersion: 3.19 Contact: Mathieu Poirier <mathieu.poirier@linaro.org> -Description: (R) Provides the number of address comparators pairs accessible +Description: (Read) Provides the number of address comparators pairs accessible on a trace unit, as specified by bit 3:0 of register ETMCCR. What: /sys/bus/coresight/devices/<memory_map>.[etm|ptm]/nr_cntr Date: November 2014 KernelVersion: 3.19 Contact: Mathieu Poirier <mathieu.poirier@linaro.org> -Description: (R) Provides the number of counters accessible on a trace unit, +Description: (Read) Provides the number of counters accessible on a trace unit, as specified by bit 15:13 of register ETMCCR. What: /sys/bus/coresight/devices/<memory_map>.[etm|ptm]/nr_ctxid_cmp Date: November 2014 KernelVersion: 3.19 Contact: Mathieu Poirier <mathieu.poirier@linaro.org> -Description: (R) Provides the number of context ID comparator available on a +Description: (Read) Provides the number of context ID comparator available on a trace unit, as specified by bit 25:24 of register ETMCCR. What: /sys/bus/coresight/devices/<memory_map>.[etm|ptm]/reset Date: November 2014 KernelVersion: 3.19 Contact: Mathieu Poirier <mathieu.poirier@linaro.org> -Description: (W) Cancels all configuration on a trace unit and set it back +Description: (Write) Cancels all configuration on a trace unit and set it back to its boot configuration. What: /sys/bus/coresight/devices/<memory_map>.[etm|ptm]/seq_12_event @@ -216,7 +216,7 @@ What: /sys/bus/coresight/devices/<memory_map>.[etm|ptm]/curr_seq_state Date: November 2014 KernelVersion: 3.19 Contact: Mathieu Poirier <mathieu.poirier@linaro.org> -Description: (R) Holds the current state of the sequencer. +Description: (Read) Holds the current state of the sequencer. What: /sys/bus/coresight/devices/<memory_map>.[etm|ptm]/sync_freq Date: November 2014 diff --git a/Documentation/ABI/testing/sysfs-bus-coresight-devices-etm4x b/Documentation/ABI/testing/sysfs-bus-coresight-devices-etm4x index 614874e2cf53..881f0cd99ce4 100644 --- a/Documentation/ABI/testing/sysfs-bus-coresight-devices-etm4x +++ b/Documentation/ABI/testing/sysfs-bus-coresight-devices-etm4x @@ -12,75 +12,75 @@ What: /sys/bus/coresight/devices/etm<N>/cpu Date: April 2015 KernelVersion: 4.01 Contact: Mathieu Poirier <mathieu.poirier@linaro.org> -Description: (R) The CPU this tracing entity is associated with. +Description: (Read) The CPU this tracing entity is associated with. What: /sys/bus/coresight/devices/etm<N>/nr_pe_cmp Date: April 2015 KernelVersion: 4.01 Contact: Mathieu Poirier <mathieu.poirier@linaro.org> -Description: (R) Indicates the number of PE comparator inputs that are +Description: (Read) Indicates the number of PE comparator inputs that are available for tracing. What: /sys/bus/coresight/devices/etm<N>/nr_addr_cmp Date: April 2015 KernelVersion: 4.01 Contact: Mathieu Poirier <mathieu.poirier@linaro.org> -Description: (R) Indicates the number of address comparator pairs that are +Description: (Read) Indicates the number of address comparator pairs that are available for tracing. What: /sys/bus/coresight/devices/etm<N>/nr_cntr Date: April 2015 KernelVersion: 4.01 Contact: Mathieu Poirier <mathieu.poirier@linaro.org> -Description: (R) Indicates the number of counters that are available for +Description: (Read) Indicates the number of counters that are available for tracing. What: /sys/bus/coresight/devices/etm<N>/nr_ext_inp Date: April 2015 KernelVersion: 4.01 Contact: Mathieu Poirier <mathieu.poirier@linaro.org> -Description: (R) Indicates how many external inputs are implemented. +Description: (Read) Indicates how many external inputs are implemented. What: /sys/bus/coresight/devices/etm<N>/numcidc Date: April 2015 KernelVersion: 4.01 Contact: Mathieu Poirier <mathieu.poirier@linaro.org> -Description: (R) Indicates the number of Context ID comparators that are +Description: (Read) Indicates the number of Context ID comparators that are available for tracing. What: /sys/bus/coresight/devices/etm<N>/numvmidc Date: April 2015 KernelVersion: 4.01 Contact: Mathieu Poirier <mathieu.poirier@linaro.org> -Description: (R) Indicates the number of VMID comparators that are available +Description: (Read) Indicates the number of VMID comparators that are available for tracing. What: /sys/bus/coresight/devices/etm<N>/nrseqstate Date: April 2015 KernelVersion: 4.01 Contact: Mathieu Poirier <mathieu.poirier@linaro.org> -Description: (R) Indicates the number of sequencer states that are +Description: (Read) Indicates the number of sequencer states that are implemented. What: /sys/bus/coresight/devices/etm<N>/nr_resource Date: April 2015 KernelVersion: 4.01 Contact: Mathieu Poirier <mathieu.poirier@linaro.org> -Description: (R) Indicates the number of resource selection pairs that are +Description: (Read) Indicates the number of resource selection pairs that are available for tracing. What: /sys/bus/coresight/devices/etm<N>/nr_ss_cmp Date: April 2015 KernelVersion: 4.01 Contact: Mathieu Poirier <mathieu.poirier@linaro.org> -Description: (R) Indicates the number of single-shot comparator controls that +Description: (Read) Indicates the number of single-shot comparator controls that are available for tracing. What: /sys/bus/coresight/devices/etm<N>/reset Date: April 2015 KernelVersion: 4.01 Contact: Mathieu Poirier <mathieu.poirier@linaro.org> -Description: (W) Cancels all configuration on a trace unit and set it back +Description: (Write) Cancels all configuration on a trace unit and set it back to its boot configuration. What: /sys/bus/coresight/devices/etm<N>/mode @@ -300,7 +300,7 @@ What: /sys/bus/coresight/devices/etm<N>/addr_cmp_view Date: December 2019 KernelVersion: 5.5 Contact: Mathieu Poirier <mathieu.poirier@linaro.org> -Description: (R) Print the current settings for the selected address +Description: (Read) Print the current settings for the selected address comparator. What: /sys/bus/coresight/devices/etm<N>/sshot_idx @@ -319,7 +319,7 @@ What: /sys/bus/coresight/devices/etm<N>/sshot_status Date: December 2019 KernelVersion: 5.5 Contact: Mathieu Poirier <mathieu.poirier@linaro.org> -Description: (R) Print the current value of the selected single shot +Description: (Read) Print the current value of the selected single shot status register. What: /sys/bus/coresight/devices/etm<N>/sshot_pe_ctrl @@ -333,111 +333,111 @@ What: /sys/bus/coresight/devices/etm<N>/mgmt/trcoslsr Date: April 2015 KernelVersion: 4.01 Contact: Mathieu Poirier <mathieu.poirier@linaro.org> -Description: (R) Print the content of the OS Lock Status Register (0x304). +Description: (Read) Print the content of the OS Lock Status Register (0x304). The value it taken directly from the HW. What: /sys/bus/coresight/devices/etm<N>/mgmt/trcpdcr Date: April 2015 KernelVersion: 4.01 Contact: Mathieu Poirier <mathieu.poirier@linaro.org> -Description: (R) Print the content of the Power Down Control Register +Description: (Read) Print the content of the Power Down Control Register (0x310). The value is taken directly from the HW. What: /sys/bus/coresight/devices/etm<N>/mgmt/trcpdsr Date: April 2015 KernelVersion: 4.01 Contact: Mathieu Poirier <mathieu.poirier@linaro.org> -Description: (R) Print the content of the Power Down Status Register +Description: (Read) Print the content of the Power Down Status Register (0x314). The value is taken directly from the HW. What: /sys/bus/coresight/devices/etm<N>/mgmt/trclsr Date: April 2015 KernelVersion: 4.01 Contact: Mathieu Poirier <mathieu.poirier@linaro.org> -Description: (R) Print the content of the SW Lock Status Register +Description: (Read) Print the content of the SW Lock Status Register (0xFB4). The value is taken directly from the HW. What: /sys/bus/coresight/devices/etm<N>/mgmt/trcauthstatus Date: April 2015 KernelVersion: 4.01 Contact: Mathieu Poirier <mathieu.poirier@linaro.org> -Description: (R) Print the content of the Authentication Status Register +Description: (Read) Print the content of the Authentication Status Register (0xFB8). The value is taken directly from the HW. What: /sys/bus/coresight/devices/etm<N>/mgmt/trcdevid Date: April 2015 KernelVersion: 4.01 Contact: Mathieu Poirier <mathieu.poirier@linaro.org> -Description: (R) Print the content of the Device ID Register +Description: (Read) Print the content of the Device ID Register (0xFC8). The value is taken directly from the HW. What: /sys/bus/coresight/devices/etm<N>/mgmt/trcdevtype Date: April 2015 KernelVersion: 4.01 Contact: Mathieu Poirier <mathieu.poirier@linaro.org> -Description: (R) Print the content of the Device Type Register +Description: (Read) Print the content of the Device Type Register (0xFCC). The value is taken directly from the HW. What: /sys/bus/coresight/devices/etm<N>/mgmt/trcpidr0 Date: April 2015 KernelVersion: 4.01 Contact: Mathieu Poirier <mathieu.poirier@linaro.org> -Description: (R) Print the content of the Peripheral ID0 Register +Description: (Read) Print the content of the Peripheral ID0 Register (0xFE0). The value is taken directly from the HW. What: /sys/bus/coresight/devices/etm<N>/mgmt/trcpidr1 Date: April 2015 KernelVersion: 4.01 Contact: Mathieu Poirier <mathieu.poirier@linaro.org> -Description: (R) Print the content of the Peripheral ID1 Register +Description: (Read) Print the content of the Peripheral ID1 Register (0xFE4). The value is taken directly from the HW. What: /sys/bus/coresight/devices/etm<N>/mgmt/trcpidr2 Date: April 2015 KernelVersion: 4.01 Contact: Mathieu Poirier <mathieu.poirier@linaro.org> -Description: (R) Print the content of the Peripheral ID2 Register +Description: (Read) Print the content of the Peripheral ID2 Register (0xFE8). The value is taken directly from the HW. What: /sys/bus/coresight/devices/etm<N>/mgmt/trcpidr3 Date: April 2015 KernelVersion: 4.01 Contact: Mathieu Poirier <mathieu.poirier@linaro.org> -Description: (R) Print the content of the Peripheral ID3 Register +Description: (Read) Print the content of the Peripheral ID3 Register (0xFEC). The value is taken directly from the HW. What: /sys/bus/coresight/devices/etm<N>/mgmt/trcconfig Date: February 2016 KernelVersion: 4.07 Contact: Mathieu Poirier <mathieu.poirier@linaro.org> -Description: (R) Print the content of the trace configuration register +Description: (Read) Print the content of the trace configuration register (0x010) as currently set by SW. What: /sys/bus/coresight/devices/etm<N>/mgmt/trctraceid Date: February 2016 KernelVersion: 4.07 Contact: Mathieu Poirier <mathieu.poirier@linaro.org> -Description: (R) Print the content of the trace ID register (0x040). +Description: (Read) Print the content of the trace ID register (0x040). What: /sys/bus/coresight/devices/etm<N>/trcidr/trcidr0 Date: April 2015 KernelVersion: 4.01 Contact: Mathieu Poirier <mathieu.poirier@linaro.org> -Description: (R) Returns the tracing capabilities of the trace unit (0x1E0). +Description: (Read) Returns the tracing capabilities of the trace unit (0x1E0). The value is taken directly from the HW. What: /sys/bus/coresight/devices/etm<N>/trcidr/trcidr1 Date: April 2015 KernelVersion: 4.01 Contact: Mathieu Poirier <mathieu.poirier@linaro.org> -Description: (R) Returns the tracing capabilities of the trace unit (0x1E4). +Description: (Read) Returns the tracing capabilities of the trace unit (0x1E4). The value is taken directly from the HW. What: /sys/bus/coresight/devices/etm<N>/trcidr/trcidr2 Date: April 2015 KernelVersion: 4.01 Contact: Mathieu Poirier <mathieu.poirier@linaro.org> -Description: (R) Returns the maximum size of the data value, data address, +Description: (Read) Returns the maximum size of the data value, data address, VMID, context ID and instuction address in the trace unit (0x1E8). The value is taken directly from the HW. @@ -445,7 +445,7 @@ What: /sys/bus/coresight/devices/etm<N>/trcidr/trcidr3 Date: April 2015 KernelVersion: 4.01 Contact: Mathieu Poirier <mathieu.poirier@linaro.org> -Description: (R) Returns the value associated with various resources +Description: (Read) Returns the value associated with various resources available to the trace unit. See the Trace Macrocell architecture specification for more details (0x1E8). The value is taken directly from the HW. @@ -454,42 +454,42 @@ What: /sys/bus/coresight/devices/etm<N>/trcidr/trcidr4 Date: April 2015 KernelVersion: 4.01 Contact: Mathieu Poirier <mathieu.poirier@linaro.org> -Description: (R) Returns how many resources the trace unit supports (0x1F0). +Description: (Read) Returns how many resources the trace unit supports (0x1F0). The value is taken directly from the HW. What: /sys/bus/coresight/devices/etm<N>/trcidr/trcidr5 Date: April 2015 KernelVersion: 4.01 Contact: Mathieu Poirier <mathieu.poirier@linaro.org> -Description: (R) Returns how many resources the trace unit supports (0x1F4). +Description: (Read) Returns how many resources the trace unit supports (0x1F4). The value is taken directly from the HW. What: /sys/bus/coresight/devices/etm<N>/trcidr/trcidr8 Date: April 2015 KernelVersion: 4.01 Contact: Mathieu Poirier <mathieu.poirier@linaro.org> -Description: (R) Returns the maximum speculation depth of the instruction +Description: (Read) Returns the maximum speculation depth of the instruction trace stream. (0x180). The value is taken directly from the HW. What: /sys/bus/coresight/devices/etm<N>/trcidr/trcidr9 Date: April 2015 KernelVersion: 4.01 Contact: Mathieu Poirier <mathieu.poirier@linaro.org> -Description: (R) Returns the number of P0 right-hand keys that the trace unit +Description: (Read) Returns the number of P0 right-hand keys that the trace unit can use (0x184). The value is taken directly from the HW. What: /sys/bus/coresight/devices/etm<N>/trcidr/trcidr10 Date: April 2015 KernelVersion: 4.01 Contact: Mathieu Poirier <mathieu.poirier@linaro.org> -Description: (R) Returns the number of P1 right-hand keys that the trace unit +Description: (Read) Returns the number of P1 right-hand keys that the trace unit can use (0x188). The value is taken directly from the HW. What: /sys/bus/coresight/devices/etm<N>/trcidr/trcidr11 Date: April 2015 KernelVersion: 4.01 Contact: Mathieu Poirier <mathieu.poirier@linaro.org> -Description: (R) Returns the number of special P1 right-hand keys that the +Description: (Read) Returns the number of special P1 right-hand keys that the trace unit can use (0x18C). The value is taken directly from the HW. @@ -497,7 +497,7 @@ What: /sys/bus/coresight/devices/etm<N>/trcidr/trcidr12 Date: April 2015 KernelVersion: 4.01 Contact: Mathieu Poirier <mathieu.poirier@linaro.org> -Description: (R) Returns the number of conditional P1 right-hand keys that +Description: (Read) Returns the number of conditional P1 right-hand keys that the trace unit can use (0x190). The value is taken directly from the HW. @@ -505,6 +505,6 @@ What: /sys/bus/coresight/devices/etm<N>/trcidr/trcidr13 Date: April 2015 KernelVersion: 4.01 Contact: Mathieu Poirier <mathieu.poirier@linaro.org> -Description: (R) Returns the number of special conditional P1 right-hand keys +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. diff --git a/Documentation/ABI/testing/sysfs-bus-coresight-devices-stm b/Documentation/ABI/testing/sysfs-bus-coresight-devices-stm index 1dffabe7f48d..53e1f4815d64 100644 --- a/Documentation/ABI/testing/sysfs-bus-coresight-devices-stm +++ b/Documentation/ABI/testing/sysfs-bus-coresight-devices-stm @@ -42,7 +42,7 @@ What: /sys/bus/coresight/devices/<memory_map>.stm/status Date: April 2016 KernelVersion: 4.7 Contact: Mathieu Poirier <mathieu.poirier@linaro.org> -Description: (R) List various control and status registers. The specific +Description: (Read) List various control and status registers. The specific layout and content is driver specific. What: /sys/bus/coresight/devices/<memory_map>.stm/traceid diff --git a/Documentation/ABI/testing/sysfs-bus-coresight-devices-tmc b/Documentation/ABI/testing/sysfs-bus-coresight-devices-tmc index ab49b9ac3bcb..6aa527296c71 100644 --- a/Documentation/ABI/testing/sysfs-bus-coresight-devices-tmc +++ b/Documentation/ABI/testing/sysfs-bus-coresight-devices-tmc @@ -11,21 +11,21 @@ What: /sys/bus/coresight/devices/<memory_map>.tmc/mgmt/rsz Date: March 2016 KernelVersion: 4.7 Contact: Mathieu Poirier <mathieu.poirier@linaro.org> -Description: (R) Defines the size, in 32-bit words, of the local RAM buffer. +Description: (Read) Defines the size, in 32-bit words, of the local RAM buffer. The value is read directly from HW register RSZ, 0x004. What: /sys/bus/coresight/devices/<memory_map>.tmc/mgmt/sts Date: March 2016 KernelVersion: 4.7 Contact: Mathieu Poirier <mathieu.poirier@linaro.org> -Description: (R) Shows the value held by the TMC status register. The value +Description: (Read) Shows the value held by the TMC status register. The value is read directly from HW register STS, 0x00C. What: /sys/bus/coresight/devices/<memory_map>.tmc/mgmt/rrp Date: March 2016 KernelVersion: 4.7 Contact: Mathieu Poirier <mathieu.poirier@linaro.org> -Description: (R) Shows the value held by the TMC RAM Read Pointer register +Description: (Read) Shows the value held by the TMC RAM Read Pointer register that is used to read entries from the Trace RAM over the APB interface. The value is read directly from HW register RRP, 0x014. @@ -34,7 +34,7 @@ What: /sys/bus/coresight/devices/<memory_map>.tmc/mgmt/rwp Date: March 2016 KernelVersion: 4.7 Contact: Mathieu Poirier <mathieu.poirier@linaro.org> -Description: (R) Shows the value held by the TMC RAM Write Pointer register +Description: (Read) Shows the value held by the TMC RAM Write Pointer register that is used to sets the write pointer to write entries from the CoreSight bus into the Trace RAM. The value is read directly from HW register RWP, 0x018. @@ -43,21 +43,21 @@ What: /sys/bus/coresight/devices/<memory_map>.tmc/mgmt/trg Date: March 2016 KernelVersion: 4.7 Contact: Mathieu Poirier <mathieu.poirier@linaro.org> -Description: (R) Similar to "trigger_cntr" above except that this value is +Description: (Read) Similar to "trigger_cntr" above except that this value is read directly from HW register TRG, 0x01C. What: /sys/bus/coresight/devices/<memory_map>.tmc/mgmt/ctl Date: March 2016 KernelVersion: 4.7 Contact: Mathieu Poirier <mathieu.poirier@linaro.org> -Description: (R) Shows the value held by the TMC Control register. The value +Description: (Read) Shows the value held by the TMC Control register. The value is read directly from HW register CTL, 0x020. What: /sys/bus/coresight/devices/<memory_map>.tmc/mgmt/ffsr Date: March 2016 KernelVersion: 4.7 Contact: Mathieu Poirier <mathieu.poirier@linaro.org> -Description: (R) Shows the value held by the TMC Formatter and Flush Status +Description: (Read) Shows the value held by the TMC Formatter and Flush Status register. The value is read directly from HW register FFSR, 0x300. @@ -65,7 +65,7 @@ What: /sys/bus/coresight/devices/<memory_map>.tmc/mgmt/ffcr Date: March 2016 KernelVersion: 4.7 Contact: Mathieu Poirier <mathieu.poirier@linaro.org> -Description: (R) Shows the value held by the TMC Formatter and Flush Control +Description: (Read) Shows the value held by the TMC Formatter and Flush Control register. The value is read directly from HW register FFCR, 0x304. @@ -73,7 +73,7 @@ What: /sys/bus/coresight/devices/<memory_map>.tmc/mgmt/mode Date: March 2016 KernelVersion: 4.7 Contact: Mathieu Poirier <mathieu.poirier@linaro.org> -Description: (R) Shows the value held by the TMC Mode register, which +Description: (Read) Shows the value held by the TMC Mode register, which indicate the mode the device has been configured to enact. The The value is read directly from the MODE register, 0x028. @@ -81,7 +81,7 @@ What: /sys/bus/coresight/devices/<memory_map>.tmc/mgmt/devid Date: March 2016 KernelVersion: 4.7 Contact: Mathieu Poirier <mathieu.poirier@linaro.org> -Description: (R) Indicates the capabilities of the Coresight TMC. +Description: (Read) Indicates the capabilities of the Coresight TMC. The value is read directly from the DEVID register, 0xFC8, What: /sys/bus/coresight/devices/<memory_map>.tmc/buffer_size diff --git a/Documentation/ABI/testing/sysfs-bus-css b/Documentation/ABI/testing/sysfs-bus-css index 966f8504bd7b..12a733fe357f 100644 --- a/Documentation/ABI/testing/sysfs-bus-css +++ b/Documentation/ABI/testing/sysfs-bus-css @@ -20,6 +20,7 @@ Contact: Cornelia Huck <cornelia.huck@de.ibm.com> Description: Contains the ids of the channel paths used by this subchannel, as reported by the channel subsystem during subchannel recognition. + Note: This is an I/O-subchannel specific attribute. Users: s390-tools, HAL @@ -31,6 +32,7 @@ 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 in sync with the values current in the channel subsystem). + Note: This is an I/O-subchannel specific attribute. Users: s390-tools, HAL @@ -53,6 +55,7 @@ Description: This file allows the driver for a device to be specified. When 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. + Note that unlike the mechanism of the same name for pci, this file does not allow to override basic matching rules. I.e., the driver must still match the subchannel type of the device. diff --git a/Documentation/ABI/testing/sysfs-bus-dfl b/Documentation/ABI/testing/sysfs-bus-dfl index 23543be904f2..b0265ab17200 100644 --- a/Documentation/ABI/testing/sysfs-bus-dfl +++ b/Documentation/ABI/testing/sysfs-bus-dfl @@ -4,6 +4,7 @@ KernelVersion: 5.10 Contact: Xu Yilun <yilun.xu@intel.com> Description: Read-only. It returns type of DFL FIU of the device. Now DFL supports 2 FIU types, 0 for FME, 1 for PORT. + Format: 0x%x What: /sys/bus/dfl/devices/dfl_dev.X/feature_id @@ -12,4 +13,5 @@ KernelVersion: 5.10 Contact: Xu Yilun <yilun.xu@intel.com> Description: Read-only. It returns feature identifier local to its DFL FIU type. + Format: 0x%x diff --git a/Documentation/ABI/testing/sysfs-bus-event_source-devices-dfl_fme b/Documentation/ABI/testing/sysfs-bus-event_source-devices-dfl_fme index c9278a3b3df1..63a32ddcb95e 100644 --- a/Documentation/ABI/testing/sysfs-bus-event_source-devices-dfl_fme +++ b/Documentation/ABI/testing/sysfs-bus-event_source-devices-dfl_fme @@ -8,13 +8,13 @@ Description: Read-only. Attribute group to describe the magic bits Each attribute under this group defines a bit range of the perf_event_attr.config. All supported attributes are listed - below. + below:: event = "config:0-11" - event ID evtype = "config:12-15" - event type portid = "config:16-23" - event source - For example, + For example:: fab_mmio_read = "event=0x06,evtype=0x02,portid=0xff" @@ -40,11 +40,11 @@ Description: Read-only. Attribute group to describe performance monitoring All supported performance monitoring events are listed below. - Basic events (evtype=0x00) + Basic events (evtype=0x00):: clock = "event=0x00,evtype=0x00,portid=0xff" - Cache events (evtype=0x01) + Cache events (evtype=0x01):: cache_read_hit = "event=0x00,evtype=0x01,portid=0xff" cache_read_miss = "event=0x01,evtype=0x01,portid=0xff" @@ -59,7 +59,7 @@ Description: Read-only. Attribute group to describe performance monitoring cache_rx_req_stall = "event=0x09,evtype=0x01,portid=0xff" cache_eviction = "event=0x0a,evtype=0x01,portid=0xff" - Fabric events (evtype=0x02) + Fabric events (evtype=0x02):: fab_pcie0_read = "event=0x00,evtype=0x02,portid=0xff" fab_pcie0_write = "event=0x01,evtype=0x02,portid=0xff" @@ -78,7 +78,7 @@ Description: Read-only. Attribute group to describe performance monitoring fab_port_mmio_read = "event=0x06,evtype=0x02,portid=?" fab_port_mmio_write = "event=0x07,evtype=0x02,portid=?" - VTD events (evtype=0x03) + VTD events (evtype=0x03):: vtd_port_read_transaction = "event=0x00,evtype=0x03,portid=?" vtd_port_write_transaction = "event=0x01,evtype=0x03,portid=?" @@ -88,7 +88,7 @@ Description: Read-only. Attribute group to describe performance monitoring vtd_port_devtlb_2m_fill = "event=0x05,evtype=0x03,portid=?" vtd_port_devtlb_1g_fill = "event=0x06,evtype=0x03,portid=?" - VTD SIP events (evtype=0x04) + VTD SIP events (evtype=0x04):: vtd_sip_iotlb_4k_hit = "event=0x00,evtype=0x04,portid=0xff" vtd_sip_iotlb_2m_hit = "event=0x01,evtype=0x04,portid=0xff" diff --git a/Documentation/ABI/testing/sysfs-bus-event_source-devices-format b/Documentation/ABI/testing/sysfs-bus-event_source-devices-format index 5bb793ec926c..df7ccc1b2fba 100644 --- a/Documentation/ABI/testing/sysfs-bus-event_source-devices-format +++ b/Documentation/ABI/testing/sysfs-bus-event_source-devices-format @@ -10,7 +10,8 @@ Description: name/value pairs. Userspace must be prepared for the possibility that attributes - define overlapping bit ranges. For example: + define overlapping bit ranges. For example:: + attr1 = 'config:0-23' attr2 = 'config:0-7' attr3 = 'config:12-35' diff --git a/Documentation/ABI/testing/sysfs-bus-event_source-devices-hv_24x7 b/Documentation/ABI/testing/sysfs-bus-event_source-devices-hv_24x7 index 2273627df190..de390a010af8 100644 --- a/Documentation/ABI/testing/sysfs-bus-event_source-devices-hv_24x7 +++ b/Documentation/ABI/testing/sysfs-bus-event_source-devices-hv_24x7 @@ -7,7 +7,7 @@ Description: Read-only. Attribute group to describe the magic bits Each attribute under this group defines a bit range of the perf_event_attr.config. All supported attributes are listed - below. + below:: chip = "config:16-31" core = "config:16-31" @@ -16,9 +16,9 @@ Description: Read-only. Attribute group to describe the magic bits offset = "config:32-63" vcpu = "config:16-31" - For example, + For example:: - PM_PB_CYC = "domain=1,offset=0x80,chip=?,lpar=0x0" + PM_PB_CYC = "domain=1,offset=0x80,chip=?,lpar=0x0" In this event, '?' after chip specifies that this value will be provided by user while running this event. 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 6a023b42486c..12e2bf92783f 100644 --- a/Documentation/ABI/testing/sysfs-bus-event_source-devices-hv_gpci +++ b/Documentation/ABI/testing/sysfs-bus-event_source-devices-hv_gpci @@ -7,7 +7,7 @@ Description: Read-only. Attribute group to describe the magic bits Each attribute under this group defines a bit range of the perf_event_attr.config. All supported attributes are listed - below. + below:: counter_info_version = "config:16-23" length = "config:24-31" @@ -20,9 +20,9 @@ Description: Read-only. Attribute group to describe the magic bits secondary_index = "config:0-15" starting_index = "config:32-63" - For example, + For example:: - processor_core_utilization_instructions_completed = "request=0x94, + processor_core_utilization_instructions_completed = "request=0x94, phys_processor_idx=?,counter_info_version=0x8, length=8,offset=0x18" @@ -36,6 +36,7 @@ Description: '0' if the hypervisor is configured to forbid access to event counters being accumulated by other guests and to physical domain event counters. + '1' if that access is allowed. What: /sys/bus/event_source/devices/hv_gpci/interface/ga diff --git a/Documentation/ABI/testing/sysfs-bus-fcoe b/Documentation/ABI/testing/sysfs-bus-fcoe index 657df13b100d..8fe787cc4ab7 100644 --- a/Documentation/ABI/testing/sysfs-bus-fcoe +++ b/Documentation/ABI/testing/sysfs-bus-fcoe @@ -3,16 +3,19 @@ Date: August 2012 KernelVersion: TBD Contact: Robert Love <robert.w.love@intel.com>, devel@open-fcoe.org Description: The FCoE bus. Attributes in this directory are control interfaces. + Attributes: - ctlr_create: 'FCoE Controller' instance creation interface. Writing an + ctlr_create: + 'FCoE Controller' instance creation interface. Writing an <ifname> to this file will allocate and populate sysfs with a fcoe_ctlr_device (ctlr_X). The user can then configure any per-port settings and finally write to the fcoe_ctlr_device's 'start' attribute to begin the kernel's discovery and login process. - ctlr_destroy: 'FCoE Controller' instance removal interface. Writing a + ctlr_destroy: + 'FCoE Controller' instance removal interface. Writing a fcoe_ctlr_device's sysfs name to this file will log the fcoe_ctlr_device out of the fabric or otherwise connected FCoE devices. It will also free all kernel memory allocated @@ -32,11 +35,13 @@ Description: 'FCoE Controller' instances on the fcoe bus. Attributes: - fcf_dev_loss_tmo: Device loss timeout period (see below). Changing + fcf_dev_loss_tmo: + Device loss timeout period (see below). Changing this value will change the dev_loss_tmo for all FCFs discovered by this controller. - mode: Display or change the FCoE Controller's mode. Possible + mode: + Display or change the FCoE Controller's mode. Possible modes are 'Fabric' and 'VN2VN'. If a FCoE Controller is started in 'Fabric' mode then FIP FCF discovery is initiated and ultimately a fabric login is attempted. @@ -44,23 +49,30 @@ Attributes: FIP VN2VN discovery and login is performed. A FCoE Controller only supports one mode at a time. - enabled: Whether an FCoE controller is enabled or disabled. + enabled: + Whether an FCoE controller is enabled or disabled. 0 if disabled, 1 if enabled. Writing either 0 or 1 to this file will enable or disable the FCoE controller. - lesb/link_fail: Link Error Status Block (LESB) link failure count. + lesb/link_fail: + Link Error Status Block (LESB) link failure count. - lesb/vlink_fail: Link Error Status Block (LESB) virtual link + lesb/vlink_fail: + Link Error Status Block (LESB) virtual link failure count. - lesb/miss_fka: Link Error Status Block (LESB) missed FCoE + lesb/miss_fka: + Link Error Status Block (LESB) missed FCoE Initialization Protocol (FIP) Keep-Alives (FKA). - lesb/symb_err: Link Error Status Block (LESB) symbolic error count. + lesb/symb_err: + Link Error Status Block (LESB) symbolic error count. - lesb/err_block: Link Error Status Block (LESB) block error count. + lesb/err_block: + Link Error Status Block (LESB) block error count. - lesb/fcs_error: Link Error Status Block (LESB) Fibre Channel + lesb/fcs_error: + Link Error Status Block (LESB) Fibre Channel Services error count. Notes: ctlr_X (global increment starting at 0) @@ -75,31 +87,41 @@ Description: 'FCoE FCF' instances on the fcoe bus. A FCF is a Fibre Channel Fibre Channel frames into a FC fabric. It can also take outbound FC frames and pack them in Ethernet packets to be sent to their destination on the Ethernet segment. + Attributes: - fabric_name: Identifies the fabric that the FCF services. + fabric_name: + Identifies the fabric that the FCF services. - switch_name: Identifies the FCF. + switch_name: + Identifies the FCF. - priority: The switch's priority amongst other FCFs on the same + priority: + The switch's priority amongst other FCFs on the same fabric. - selected: 1 indicates that the switch has been selected for use; + selected: + 1 indicates that the switch has been selected for use; 0 indicates that the switch will not be used. - fc_map: The Fibre Channel MAP + fc_map: + The Fibre Channel MAP - vfid: The Virtual Fabric ID + vfid: + The Virtual Fabric ID - mac: The FCF's MAC address + mac: + The FCF's MAC address - fka_period: The FIP Keep-Alive period + fka_period: + The FIP Keep-Alive period fabric_state: The internal kernel state - "Unknown" - Initialization value - "Disconnected" - No link to the FCF/fabric - "Connected" - Host is connected to the FCF - "Deleted" - FCF is being removed from the system + + - "Unknown" - Initialization value + - "Disconnected" - No link to the FCF/fabric + - "Connected" - Host is connected to the FCF + - "Deleted" - FCF is being removed from the system dev_loss_tmo: The device loss timeout period for this FCF. diff --git a/Documentation/ABI/testing/sysfs-bus-fsl-mc b/Documentation/ABI/testing/sysfs-bus-fsl-mc index 80256b8b4f26..bf3c6af6ad89 100644 --- a/Documentation/ABI/testing/sysfs-bus-fsl-mc +++ b/Documentation/ABI/testing/sysfs-bus-fsl-mc @@ -6,8 +6,10 @@ Description: the driver to attempt to bind to the device found at this location. The format for the location is Object.Id and is the same as found in /sys/bus/fsl-mc/devices/. - For example: - # echo dpni.2 > /sys/bus/fsl-mc/drivers/fsl_dpaa2_eth/bind + + For example:: + + # echo dpni.2 > /sys/bus/fsl-mc/drivers/fsl_dpaa2_eth/bind What: /sys/bus/fsl-mc/drivers/.../unbind Date: December 2016 @@ -17,5 +19,7 @@ Description: driver to attempt to unbind from the device found at this location. The format for the location is Object.Id and is the same as found in /sys/bus/fsl-mc/devices/. - For example: - # echo dpni.2 > /sys/bus/fsl-mc/drivers/fsl_dpaa2_eth/unbind + + For example:: + + # echo dpni.2 > /sys/bus/fsl-mc/drivers/fsl_dpaa2_eth/unbind diff --git a/Documentation/ABI/testing/sysfs-bus-i2c-devices-fsa9480 b/Documentation/ABI/testing/sysfs-bus-i2c-devices-fsa9480 index 9de269bb0ae5..42dfc9399d2d 100644 --- a/Documentation/ABI/testing/sysfs-bus-i2c-devices-fsa9480 +++ b/Documentation/ABI/testing/sysfs-bus-i2c-devices-fsa9480 @@ -3,19 +3,25 @@ Date: February 2011 Contact: Minkyu Kang <mk7.kang@samsung.com> Description: show what device is attached - NONE - no device - USB - USB device is attached - UART - UART is attached - CHARGER - Charger is attaced - JIG - JIG is attached + + ======= ====================== + NONE no device + USB USB device is attached + UART UART is attached + CHARGER Charger is attaced + JIG JIG is attached + ======= ====================== What: /sys/bus/i2c/devices/.../switch Date: February 2011 Contact: Minkyu Kang <mk7.kang@samsung.com> Description: show or set the state of manual switch - VAUDIO - switch to VAUDIO path - UART - switch to UART path - AUDIO - switch to AUDIO path - DHOST - switch to DHOST path - AUTO - switch automatically by device + + ======= ============================== + VAUDIO switch to VAUDIO path + UART switch to UART path + AUDIO switch to AUDIO path + DHOST switch to DHOST path + AUTO switch automatically by device + ======= ============================== diff --git a/Documentation/ABI/testing/sysfs-bus-i2c-devices-pca954x b/Documentation/ABI/testing/sysfs-bus-i2c-devices-pca954x index 0b0de8cd0d13..b6c69eb80ca4 100644 --- a/Documentation/ABI/testing/sysfs-bus-i2c-devices-pca954x +++ b/Documentation/ABI/testing/sysfs-bus-i2c-devices-pca954x @@ -6,15 +6,18 @@ Description: Value that exists only for mux devices that can be written to control the behaviour of the multiplexer on idle. Possible values: - -2 - disconnect on idle, i.e. deselect the last used - channel, which is useful when there is a device - with an address that conflicts with another - device on another mux on the same parent bus. - -1 - leave the mux as-is, which is the most optimal - setting in terms of I2C operations and is the - default mode. - 0..<nchans> - set the mux to a predetermined channel, - which is useful if there is one channel that is - used almost always, and you want to reduce the - latency for normal operations after rare - transactions on other channels + + =========== =============================================== + -2 disconnect on idle, i.e. deselect the last used + channel, which is useful when there is a device + with an address that conflicts with another + device on another mux on the same parent bus. + -1 leave the mux as-is, which is the most optimal + setting in terms of I2C operations and is the + default mode. + 0..<nchans> set the mux to a predetermined channel, + which is useful if there is one channel that is + used almost always, and you want to reduce the + latency for normal operations after rare + transactions on other channels + =========== =============================================== diff --git a/Documentation/ABI/testing/sysfs-bus-i3c b/Documentation/ABI/testing/sysfs-bus-i3c index 2f332ec36f82..1f4a2662335b 100644 --- a/Documentation/ABI/testing/sysfs-bus-i3c +++ b/Documentation/ABI/testing/sysfs-bus-i3c @@ -84,6 +84,7 @@ Description: by space. Modes can be "hdr-ddr", "hdr-tsp" and "hdr-tsl". See the I3C specification for more details about these HDR modes. + This entry describes the HDRCAP of the master controller driving the bus. @@ -135,6 +136,7 @@ Description: Expose the HDR (High Data Rate) capabilities of a device. Returns a list of supported HDR mode, each element is separated by space. Modes can be "hdr-ddr", "hdr-tsp" and "hdr-tsl". + See the I3C specification for more details about these HDR modes. diff --git a/Documentation/ABI/testing/sysfs-bus-iio b/Documentation/ABI/testing/sysfs-bus-iio index a9d51810a3ba..df42bed09f25 100644 --- a/Documentation/ABI/testing/sysfs-bus-iio +++ b/Documentation/ABI/testing/sysfs-bus-iio @@ -15,6 +15,7 @@ Description: based on hardware generated events (e.g. data ready) or provided by a separate driver for other hardware (e.g. periodic timer, GPIO or high resolution timer). + Contains trigger type specific elements. These do not generalize well and hence are not documented in this file. X is the IIO index of the trigger. @@ -65,6 +66,7 @@ Contact: linux-iio@vger.kernel.org Description: When the internal sampling clock can only take a specific set of frequencies, we can specify the available values with: + - a small discrete set of values like "0 2 4 6 8" - a range with minimum, step and maximum frequencies like "[min step max]" @@ -665,6 +667,7 @@ Description: <type>[Y][_name]_<raw|input>_thresh_falling_value may take different values, but the device can only enable both thresholds or neither. + Note the driver will assume the last p events requested are to be enabled where p is how many it supports (which may vary depending on the exact set requested. So if you want to be @@ -719,6 +722,7 @@ Description: <type>[Y][_name]_<raw|input>_roc_falling_value may take different values, but the device can only enable both rate of change thresholds or neither. + Note the driver will assume the last p events requested are to be enabled where p is however many it supports (which may vary depending on the exact set requested. So if you want to be @@ -774,9 +778,11 @@ Description: Specifies the value of threshold that the device is comparing against for the events enabled by <type>Y[_name]_thresh[_rising|falling]_en. + If separate attributes exist for the two directions, but direction is not specified for this attribute, then a single threshold value applies to both directions. + The raw or input element of the name indicates whether the value is in raw device units or in processed units (as _raw and _input do on sysfs direct channel read attributes). @@ -859,6 +865,7 @@ Description: If separate attributes exist for the two directions, but direction is not specified for this attribute, then a single hysteresis value applies to both directions. + For falling events the hysteresis is added to the _value attribute for this event to get the upper threshold for when the event goes back to normal, for rising events the hysteresis is subtracted from the _value @@ -905,6 +912,7 @@ Description: Specifies the value of rate of change threshold that the device is comparing against for the events enabled by <type>[Y][_name]_roc[_rising|falling]_en. + If separate attributes exist for the two directions, but direction is not specified for this attribute, then a single threshold value applies to both directions. @@ -1304,6 +1312,7 @@ Description: Proximity measurement indicating that some object is near the sensor, usually by observing reflectivity of infrared or ultrasound emitted. + Often these sensors are unit less and as such conversion to SI units is not possible. Higher proximity measurements indicate closer objects, and vice versa. Units after @@ -1449,9 +1458,12 @@ Contact: linux-iio@vger.kernel.org Description: A single positive integer specifying the maximum number of scan elements to wait for. + Poll will block until the watermark is reached. + Blocking read will wait until the minimum between the requested read amount or the low water mark is available. + Non-blocking read will retrieve the available samples from the buffer even if there are less samples then watermark level. This allows the application to block on poll with a timeout and read @@ -1480,11 +1492,13 @@ Description: device settings allows it (e.g. if a trigger is set that samples data differently that the hardware fifo does then hardware fifo will not enabled). + If the hardware fifo is enabled and the level of the hardware fifo reaches the hardware fifo watermark level the device will flush its hardware fifo to the device buffer. Doing a non blocking read on the device when no samples are present in the device buffer will also force a flush. + When the hardware fifo is enabled there is no need to use a trigger to use buffer mode since the watermark settings guarantees that the hardware fifo is flushed to the device @@ -1522,6 +1536,7 @@ Description: A single positive integer specifying the minimum watermark level for the hardware fifo of this device. If the device does not have a hardware fifo this entry is not present. + If the user sets buffer/watermark to a value less than this one, then the hardware watermark will remain unset. @@ -1532,6 +1547,7 @@ Description: A single positive integer specifying the maximum watermark level for the hardware fifo of this device. If the device does not have a hardware fifo this entry is not present. + If the user sets buffer/watermark to a value greater than this one, then the hardware watermark will be capped at this value. @@ -1543,6 +1559,7 @@ Description: levels for the hardware fifo. This entry is optional and if it is not present it means that all the values between hwfifo_watermark_min and hwfifo_watermark_max are supported. + If the user sets buffer/watermark to a value greater than hwfifo_watermak_min but not equal to any of the values in this list, the driver will chose an appropriate value for the @@ -1604,7 +1621,8 @@ KernelVersion: 4.1.0 Contact: linux-iio@vger.kernel.org Description: '1' (enable) or '0' (disable) specifying the enable - of heater function. Same reading values apply + of heater function. Same reading values apply. + This ABI is especially applicable for humidity sensors to heatup the device and get rid of any condensation in some humidity environment @@ -1627,17 +1645,21 @@ Description: Mounting matrix for IIO sensors. This is a rotation matrix which informs userspace about sensor chip's placement relative to the main hardware it is mounted on. + Main hardware placement is defined according to the local reference frame related to the physical quantity the sensor measures. + Given that the rotation matrix is defined in a board specific way (platform data and / or device-tree), the main hardware reference frame definition is left to the implementor's choice (see below for a magnetometer example). + Applications should apply this rotation matrix to samples so that when main hardware reference frame is aligned onto local reference frame, then sensor chip reference frame is also perfectly aligned with it. + Matrix is a 3x3 unitary matrix and typically looks like [0, 1, 0; 1, 0, 0; 0, 0, -1]. Identity matrix [1, 0, 0; 0, 1, 0; 0, 0, 1] means sensor chip and main hardware @@ -1646,8 +1668,10 @@ Description: For example, a mounting matrix for a magnetometer sensor informs userspace about sensor chip's ORIENTATION relative to the main hardware. + More specifically, main hardware orientation is defined with respect to the LOCAL EARTH GEOMAGNETIC REFERENCE FRAME where : + * Y is in the ground plane and positive towards magnetic North ; * X is in the ground plane, perpendicular to the North axis and positive towards the East ; @@ -1656,13 +1680,16 @@ Description: An implementor might consider that for a hand-held device, a 'natural' orientation would be 'front facing camera at the top'. The main hardware reference frame could then be described as : + * Y is in the plane of the screen and is positive towards the top of the screen ; * X is in the plane of the screen, perpendicular to Y axis, and positive towards the right hand side of the screen ; * Z is perpendicular to the screen plane and positive out of the screen. + Another example for a quadrotor UAV might be : + * Y is in the plane of the propellers and positive towards the front-view camera; * X is in the plane of the propellers, perpendicular to Y axis, @@ -1704,6 +1731,7 @@ Description: This interface is deprecated; please use the Counter subsystem. A list of possible counting directions which are: + - "up" : counter device is increasing. - "down": counter device is decreasing. diff --git a/Documentation/ABI/testing/sysfs-bus-iio-adc-envelope-detector b/Documentation/ABI/testing/sysfs-bus-iio-adc-envelope-detector index 2071f9bcfaa5..1c2a07f7a75e 100644 --- a/Documentation/ABI/testing/sysfs-bus-iio-adc-envelope-detector +++ b/Documentation/ABI/testing/sysfs-bus-iio-adc-envelope-detector @@ -5,7 +5,8 @@ Contact: Peter Rosin <peda@axentia.se> Description: The DAC is used to find the peak level of an alternating voltage input signal by a binary search using the output - of a comparator wired to an interrupt pin. Like so: + of a comparator wired to an interrupt pin. Like so:: + _ | \ input +------>-------|+ \ @@ -19,10 +20,12 @@ Description: | irq|------<-------' | | '-------' + The boolean invert attribute (0/1) should be set when the input signal is centered around the maximum value of the dac instead of zero. The envelope detector will search from below in this case and will also invert the result. + The edge/level of the interrupt is also switched to its opposite value. diff --git a/Documentation/ABI/testing/sysfs-bus-iio-adc-hi8435 b/Documentation/ABI/testing/sysfs-bus-iio-adc-hi8435 index f30b4c424fb6..4b01150af397 100644 --- a/Documentation/ABI/testing/sysfs-bus-iio-adc-hi8435 +++ b/Documentation/ABI/testing/sysfs-bus-iio-adc-hi8435 @@ -19,9 +19,11 @@ Description: is separately set for "GND-Open" and "Supply-Open" modes. Channels 0..31 have common low threshold values, but could have different sensing_modes. + The low voltage threshold range is between 2..21V. Hysteresis between low and high thresholds can not be lower then 2 and can not be odd. + If falling threshold results hysteresis to odd value then rising threshold is automatically subtracted by one. @@ -34,10 +36,13 @@ Description: this value then the threshold rising event is pushed. Depending on in_voltageY_sensing_mode the high voltage threshold is separately set for "GND-Open" and "Supply-Open" modes. + Channels 0..31 have common high threshold values, but could have different sensing_modes. + The high voltage threshold range is between 3..22V. Hysteresis between low and high thresholds can not be lower then 2 and can not be odd. + If rising threshold results hysteresis to odd value then falling threshold is automatically appended by one. diff --git a/Documentation/ABI/testing/sysfs-bus-iio-adc-stm32 b/Documentation/ABI/testing/sysfs-bus-iio-adc-stm32 index efe4c85e3c8b..1975c7a1af34 100644 --- a/Documentation/ABI/testing/sysfs-bus-iio-adc-stm32 +++ b/Documentation/ABI/testing/sysfs-bus-iio-adc-stm32 @@ -5,10 +5,13 @@ Description: The STM32 ADC can be configured to use external trigger sources (e.g. timers, pwm or exti gpio). Then, it can be tuned to start conversions on external trigger by either: + - "rising-edge" - "falling-edge" - "both-edges". + Reading returns current trigger polarity. + Writing value before enabling conversions sets trigger polarity. What: /sys/bus/iio/devices/triggerX/trigger_polarity_available diff --git a/Documentation/ABI/testing/sysfs-bus-iio-cros-ec b/Documentation/ABI/testing/sysfs-bus-iio-cros-ec index 6158f831c761..adf24c40126f 100644 --- a/Documentation/ABI/testing/sysfs-bus-iio-cros-ec +++ b/Documentation/ABI/testing/sysfs-bus-iio-cros-ec @@ -4,7 +4,7 @@ KernelVersion: 4.7 Contact: linux-iio@vger.kernel.org Description: Writing '1' will perform a FOC (Fast Online Calibration). The - corresponding calibration offsets can be read from *_calibbias + corresponding calibration offsets can be read from `*_calibbias` entries. What: /sys/bus/iio/devices/iio:deviceX/location diff --git a/Documentation/ABI/testing/sysfs-bus-iio-dfsdm-adc-stm32 b/Documentation/ABI/testing/sysfs-bus-iio-dfsdm-adc-stm32 index 0e66ae9b0071..91439d6d60b5 100644 --- a/Documentation/ABI/testing/sysfs-bus-iio-dfsdm-adc-stm32 +++ b/Documentation/ABI/testing/sysfs-bus-iio-dfsdm-adc-stm32 @@ -3,14 +3,20 @@ KernelVersion: 4.14 Contact: arnaud.pouliquen@st.com Description: For audio purpose only. + Used by audio driver to set/get the spi input frequency. + This is mandatory if DFSDM is slave on SPI bus, to provide information on the SPI clock frequency during runtime Notice that the SPI frequency should be a multiple of sample frequency to ensure the precision. - if DFSDM input is SPI master + + if DFSDM input is SPI master: + Reading SPI clkout frequency, error on writing + If DFSDM input is SPI Slave: + Reading returns value previously set. Writing value before starting conversions. diff --git a/Documentation/ABI/testing/sysfs-bus-iio-distance-srf08 b/Documentation/ABI/testing/sysfs-bus-iio-distance-srf08 index a133fd8d081a..40df5c9fef99 100644 --- a/Documentation/ABI/testing/sysfs-bus-iio-distance-srf08 +++ b/Documentation/ABI/testing/sysfs-bus-iio-distance-srf08 @@ -15,8 +15,11 @@ Description: first object echoed in meters. Default value is 6.020. This setting limits the time the driver is waiting for a echo. + Showing the range of available values is represented as the minimum value, the step and the maximum value, all enclosed in square brackets. - Example: - [0.043 0.043 11.008] + + Example:: + + [0.043 0.043 11.008] diff --git a/Documentation/ABI/testing/sysfs-bus-iio-frequency-ad9523 b/Documentation/ABI/testing/sysfs-bus-iio-frequency-ad9523 index a91aeabe7b24..d065cda7dd96 100644 --- a/Documentation/ABI/testing/sysfs-bus-iio-frequency-ad9523 +++ b/Documentation/ABI/testing/sysfs-bus-iio-frequency-ad9523 @@ -8,7 +8,9 @@ KernelVersion: 3.4.0 Contact: linux-iio@vger.kernel.org Description: Reading returns either '1' or '0'. + '1' means that the clock in question is present. + '0' means that the clock is missing. What: /sys/bus/iio/devices/iio:deviceX/pllY_locked diff --git a/Documentation/ABI/testing/sysfs-bus-iio-frequency-adf4371 b/Documentation/ABI/testing/sysfs-bus-iio-frequency-adf4371 index 302de64cb424..544548ee794c 100644 --- a/Documentation/ABI/testing/sysfs-bus-iio-frequency-adf4371 +++ b/Documentation/ABI/testing/sysfs-bus-iio-frequency-adf4371 @@ -27,12 +27,12 @@ What: /sys/bus/iio/devices/iio:deviceX/out_altvoltageY_name KernelVersion: Contact: linux-iio@vger.kernel.org Description: - Reading returns the datasheet name for channel Y: + Reading returns the datasheet name for channel Y:: - out_altvoltage0_name: RF8x - out_altvoltage1_name: RFAUX8x - out_altvoltage2_name: RF16x - out_altvoltage3_name: RF32x + out_altvoltage0_name: RF8x + out_altvoltage1_name: RFAUX8x + out_altvoltage2_name: RF16x + out_altvoltage3_name: RF32x What: /sys/bus/iio/devices/iio:deviceX/out_altvoltageY_powerdown KernelVersion: diff --git a/Documentation/ABI/testing/sysfs-bus-iio-health-afe440x b/Documentation/ABI/testing/sysfs-bus-iio-health-afe440x index 6adba9058b22..66b621f10223 100644 --- a/Documentation/ABI/testing/sysfs-bus-iio-health-afe440x +++ b/Documentation/ABI/testing/sysfs-bus-iio-health-afe440x @@ -6,10 +6,14 @@ Description: Get measured values from the ADC for these stages. Y is the specific stage number corresponding to datasheet stage names as follows: - 1 -> LED2 - 2 -> ALED2/LED3 - 3 -> LED1 - 4 -> ALED1/LED4 + + == ========== + 1 LED2 + 2 ALED2/LED3 + 3 LED1 + 4 ALED1/LED4 + == ========== + Note that channels 5 and 6 represent LED2-ALED2 and LED1-ALED1 respectively which simply helper channels containing the calculated difference in the value of stage 1 - 2 and 3 - 4. diff --git a/Documentation/ABI/testing/sysfs-bus-iio-light-isl29018 b/Documentation/ABI/testing/sysfs-bus-iio-light-isl29018 index f0ce0a0476ea..220206a20d98 100644 --- a/Documentation/ABI/testing/sysfs-bus-iio-light-isl29018 +++ b/Documentation/ABI/testing/sysfs-bus-iio-light-isl29018 @@ -15,5 +15,7 @@ Description: Scheme 0 has wider dynamic range, Scheme 1 proximity detection is less affected by the ambient IR noise variation. - 0 Sensing IR from LED and ambient - 1 Sensing IR from LED with ambient IR rejection + == ============================================= + 0 Sensing IR from LED and ambient + 1 Sensing IR from LED with ambient IR rejection + == ============================================= diff --git a/Documentation/ABI/testing/sysfs-bus-iio-lptimer-stm32 b/Documentation/ABI/testing/sysfs-bus-iio-lptimer-stm32 index ad2cc63e4bf8..73498ff666bd 100644 --- a/Documentation/ABI/testing/sysfs-bus-iio-lptimer-stm32 +++ b/Documentation/ABI/testing/sysfs-bus-iio-lptimer-stm32 @@ -17,9 +17,11 @@ KernelVersion: 4.13 Contact: fabrice.gasnier@st.com Description: Configure the device counter quadrature modes: + - non-quadrature: Encoder IN1 input servers as the count input (up direction). + - quadrature: Encoder IN1 and IN2 inputs are mixed to get direction and count. @@ -35,23 +37,26 @@ KernelVersion: 4.13 Contact: fabrice.gasnier@st.com Description: Configure the device encoder/counter active edge: + - rising-edge - falling-edge - both-edges In non-quadrature mode, device counts up on active edge. + In quadrature mode, encoder counting scenarios are as follows: - ---------------------------------------------------------------- + + +---------+----------+--------------------+--------------------+ | Active | Level on | IN1 signal | IN2 signal | - | edge | opposite |------------------------------------------ + | edge | opposite +----------+---------+----------+---------+ | | signal | Rising | Falling | Rising | Falling | - ---------------------------------------------------------------- - | Rising | High -> | Down | - | Up | - | - | edge | Low -> | Up | - | Down | - | - ---------------------------------------------------------------- - | Falling | High -> | - | Up | - | Down | - | edge | Low -> | - | Down | - | Up | - ---------------------------------------------------------------- - | Both | High -> | Down | Up | Up | Down | - | edges | Low -> | Up | Down | Down | Up | - ---------------------------------------------------------------- + +---------+----------+----------+---------+----------+---------+ + | Rising | High -> | Down | - | Up | - | + | edge | Low -> | Up | - | Down | - | + +---------+----------+----------+---------+----------+---------+ + | Falling | High -> | - | Up | - | Down | + | edge | Low -> | - | Down | - | Up | + +---------+----------+----------+---------+----------+---------+ + | Both | High -> | Down | Up | Up | Down | + | edges | Low -> | Up | Down | Down | Up | + +---------+----------+----------+---------+----------+---------+ diff --git a/Documentation/ABI/testing/sysfs-bus-iio-magnetometer-hmc5843 b/Documentation/ABI/testing/sysfs-bus-iio-magnetometer-hmc5843 index 6275e9f56e6c..13f099ef6a95 100644 --- a/Documentation/ABI/testing/sysfs-bus-iio-magnetometer-hmc5843 +++ b/Documentation/ABI/testing/sysfs-bus-iio-magnetometer-hmc5843 @@ -5,11 +5,16 @@ Contact: linux-iio@vger.kernel.org Description: Current configuration and available configurations for the bias current. - normal - Normal measurement configurations (default) - positivebias - Positive bias configuration - negativebias - Negative bias configuration - disabled - Only available on HMC5983. Disables magnetic + + ============ ============================================ + normal Normal measurement configurations (default) + positivebias Positive bias configuration + negativebias Negative bias configuration + disabled Only available on HMC5983. Disables magnetic sensor and enables temperature sensor. - Note: The effect of this configuration may vary - according to the device. For exact documentation - check the device's datasheet. + ============ ============================================ + + Note: + The effect of this configuration may vary + according to the device. For exact documentation + check the device's datasheet. diff --git a/Documentation/ABI/testing/sysfs-bus-iio-temperature-max31856 b/Documentation/ABI/testing/sysfs-bus-iio-temperature-max31856 index 3b3509a3ef2f..e5ef6d8e5da1 100644 --- a/Documentation/ABI/testing/sysfs-bus-iio-temperature-max31856 +++ b/Documentation/ABI/testing/sysfs-bus-iio-temperature-max31856 @@ -5,9 +5,12 @@ 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 + + === ======================================================= + '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 @@ -18,7 +21,11 @@ Description: 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). + + === ======================================================= + '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-timer-stm32 b/Documentation/ABI/testing/sysfs-bus-iio-timer-stm32 index b7259234ad70..a10a4de3e5fe 100644 --- a/Documentation/ABI/testing/sysfs-bus-iio-timer-stm32 +++ b/Documentation/ABI/testing/sysfs-bus-iio-timer-stm32 @@ -3,67 +3,85 @@ KernelVersion: 4.11 Contact: benjamin.gaignard@st.com Description: Reading returns the list possible master modes which are: - - "reset" : The UG bit from the TIMx_EGR register is + + + - "reset" + The UG bit from the TIMx_EGR register is used as trigger output (TRGO). - - "enable" : The Counter Enable signal CNT_EN is used + - "enable" + The Counter Enable signal CNT_EN is used as trigger output. - - "update" : The update event is selected as trigger output. + - "update" + The update event is selected as trigger output. For instance a master timer can then be used as a prescaler for a slave timer. - - "compare_pulse" : The trigger output send a positive pulse - when the CC1IF flag is to be set. - - "OC1REF" : OC1REF signal is used as trigger output. - - "OC2REF" : OC2REF signal is used as trigger output. - - "OC3REF" : OC3REF signal is used as trigger output. - - "OC4REF" : OC4REF signal is used as trigger output. + - "compare_pulse" + The trigger output send a positive pulse + when the CC1IF flag is to be set. + - "OC1REF" + OC1REF signal is used as trigger output. + - "OC2REF" + OC2REF signal is used as trigger output. + - "OC3REF" + OC3REF signal is used as trigger output. + - "OC4REF" + OC4REF signal is used as trigger output. + Additional modes (on TRGO2 only): - - "OC5REF" : OC5REF signal is used as trigger output. - - "OC6REF" : OC6REF signal is used as trigger output. + + - "OC5REF" + OC5REF signal is used as trigger output. + - "OC6REF" + OC6REF signal is used as trigger output. - "compare_pulse_OC4REF": - OC4REF rising or falling edges generate pulses. + OC4REF rising or falling edges generate pulses. - "compare_pulse_OC6REF": - OC6REF rising or falling edges generate pulses. + OC6REF rising or falling edges generate pulses. - "compare_pulse_OC4REF_r_or_OC6REF_r": - OC4REF or OC6REF rising edges generate pulses. + OC4REF or OC6REF rising edges generate pulses. - "compare_pulse_OC4REF_r_or_OC6REF_f": - OC4REF rising or OC6REF falling edges generate pulses. + OC4REF rising or OC6REF falling edges generate + pulses. - "compare_pulse_OC5REF_r_or_OC6REF_r": - OC5REF or OC6REF rising edges generate pulses. + OC5REF or OC6REF rising edges generate pulses. - "compare_pulse_OC5REF_r_or_OC6REF_f": - OC5REF rising or OC6REF falling edges generate pulses. - - +-----------+ +-------------+ +---------+ - | Prescaler +-> | Counter | +-> | Master | TRGO(2) - +-----------+ +--+--------+-+ |-> | Control +--> - | | || +---------+ - +--v--------+-+ OCxREF || +---------+ - | Chx compare +----------> | Output | ChX - +-----------+-+ | | Control +--> - . | | +---------+ - . | | . - +-----------v-+ OC6REF | . - | Ch6 compare +---------+> - +-------------+ - - Example with: "compare_pulse_OC4REF_r_or_OC6REF_r": - - X - X X - X . . X - X . . X - X . . X - count X . . . . X - . . . . - . . . . - +---------------+ - OC4REF | . . | - +-+ . . +-+ - . +---+ . - OC6REF . | | . - +-------+ +-------+ - +-+ +-+ - TRGO2 | | | | - +-+ +---+ +---------+ + OC5REF rising or OC6REF falling edges generate + pulses. + + :: + + +-----------+ +-------------+ +---------+ + | Prescaler +-> | Counter | +-> | Master | TRGO(2) + +-----------+ +--+--------+-+ |-> | Control +--> + | | || +---------+ + +--v--------+-+ OCxREF || +---------+ + | Chx compare +----------> | Output | ChX + +-----------+-+ | | Control +--> + . | | +---------+ + . | | . + +-----------v-+ OC6REF | . + | Ch6 compare +---------+> + +-------------+ + + Example with: "compare_pulse_OC4REF_r_or_OC6REF_r":: + + X + X X + X . . X + X . . X + X . . X + count X . . . . X + . . . . + . . . . + +---------------+ + OC4REF | . . | + +-+ . . +-+ + . +---+ . + OC6REF . | | . + +-------+ +-------+ + +-+ +-+ + TRGO2 | | | | + +-+ +---+ +---------+ What: /sys/bus/iio/devices/triggerX/master_mode KernelVersion: 4.11 @@ -91,6 +109,30 @@ Description: When counting down the counter start from preset value and fire event when reach 0. +What: /sys/bus/iio/devices/iio:deviceX/in_count_quadrature_mode_available +KernelVersion: 4.12 +Contact: benjamin.gaignard@st.com +Description: + Reading returns the list possible quadrature modes. + +What: /sys/bus/iio/devices/iio:deviceX/in_count0_quadrature_mode +KernelVersion: 4.12 +Contact: benjamin.gaignard@st.com +Description: + Configure the device counter quadrature modes: + + channel_A: + Encoder A input servers as the count input and B as + the UP/DOWN direction control input. + + channel_B: + Encoder B input serves as the count input and A as + the UP/DOWN direction control input. + + quadrature: + Encoder A and B inputs are mixed to get direction + and count with a scale of 0.25. + What: /sys/bus/iio/devices/iio:deviceX/in_count_enable_mode_available KernelVersion: 4.12 Contact: benjamin.gaignard@st.com @@ -104,6 +146,7 @@ Description: Configure the device counter enable modes, in all case counting direction is set by in_count0_count_direction attribute and the counter is clocked by the internal clock. + always: Counter is always ON. diff --git a/Documentation/ABI/testing/sysfs-bus-intel_th-devices-gth b/Documentation/ABI/testing/sysfs-bus-intel_th-devices-gth index 22d0843849a8..b7b2278fe042 100644 --- a/Documentation/ABI/testing/sysfs-bus-intel_th-devices-gth +++ b/Documentation/ABI/testing/sysfs-bus-intel_th-devices-gth @@ -10,10 +10,13 @@ Date: June 2015 KernelVersion: 4.3 Contact: Alexander Shishkin <alexander.shishkin@linux.intel.com> Description: (RO) Output port type: - 0: not present, - 1: MSU (Memory Storage Unit) - 2: CTP (Common Trace Port) - 4: PTI (MIPI PTI). + + == ========================= + 0 not present, + 1 MSU (Memory Storage Unit) + 2 CTP (Common Trace Port) + 4 PTI (MIPI PTI). + == ========================= What: /sys/bus/intel_th/devices/<intel_th_id>-gth/outputs/[0-7]_drop Date: June 2015 diff --git a/Documentation/ABI/testing/sysfs-bus-intel_th-devices-msc b/Documentation/ABI/testing/sysfs-bus-intel_th-devices-msc index 7fd2601c2831..a74252e580a5 100644 --- a/Documentation/ABI/testing/sysfs-bus-intel_th-devices-msc +++ b/Documentation/ABI/testing/sysfs-bus-intel_th-devices-msc @@ -9,11 +9,13 @@ Date: June 2015 KernelVersion: 4.3 Contact: Alexander Shishkin <alexander.shishkin@linux.intel.com> Description: (RW) Configure MSC operating mode: + - "single", for contiguous buffer mode (high-order alloc); - "multi", for multiblock mode; - "ExI", for DCI handler mode; - "debug", for debug mode; - any of the currently loaded buffer sinks. + If operating mode changes, existing buffer is deallocated, provided there are no active users and tracing is not enabled, otherwise the write will fail. @@ -23,10 +25,12 @@ Date: June 2015 KernelVersion: 4.3 Contact: Alexander Shishkin <alexander.shishkin@linux.intel.com> Description: (RW) Configure MSC buffer size for "single" or "multi" modes. + In single mode, this is a single number of pages, has to be power of 2. In multiblock mode, this is a comma-separated list of numbers of pages for each window to be allocated. Number of windows is not limited. + Writing to this file deallocates existing buffer (provided there are no active users and tracing is not enabled) and then allocates a new one. diff --git a/Documentation/ABI/testing/sysfs-bus-most b/Documentation/ABI/testing/sysfs-bus-most index ec0a603d804b..38cc03e408e7 100644 --- a/Documentation/ABI/testing/sysfs-bus-most +++ b/Documentation/ABI/testing/sysfs-bus-most @@ -235,7 +235,8 @@ KernelVersion: 4.15 Contact: Christian Gromm <christian.gromm@microchip.com> Description: This is to read back the configured direction of the channel. - The following strings will be accepted: + The following strings will be accepted:: + 'tx', 'rx' Users: @@ -246,7 +247,8 @@ KernelVersion: 4.15 Contact: Christian Gromm <christian.gromm@microchip.com> Description: This is to read back the configured data type of the channel. - The following strings will be accepted: + The following strings will be accepted:: + 'control', 'async', 'sync', diff --git a/Documentation/ABI/testing/sysfs-bus-moxtet-devices b/Documentation/ABI/testing/sysfs-bus-moxtet-devices index 355958527fa3..4a6d61b44f3f 100644 --- a/Documentation/ABI/testing/sysfs-bus-moxtet-devices +++ b/Documentation/ABI/testing/sysfs-bus-moxtet-devices @@ -2,16 +2,16 @@ What: /sys/bus/moxtet/devices/moxtet-<name>.<addr>/module_description Date: March 2019 KernelVersion: 5.3 Contact: Marek Behún <marek.behun@nic.cz> -Description: (R) Moxtet module description. Format: string +Description: (Read) Moxtet module description. Format: string What: /sys/bus/moxtet/devices/moxtet-<name>.<addr>/module_id Date: March 2019 KernelVersion: 5.3 Contact: Marek Behún <marek.behun@nic.cz> -Description: (R) Moxtet module ID. Format: %x +Description: (Read) Moxtet module ID. Format: %x What: /sys/bus/moxtet/devices/moxtet-<name>.<addr>/module_name Date: March 2019 KernelVersion: 5.3 Contact: Marek Behún <marek.behun@nic.cz> -Description: (R) Moxtet module name. Format: string +Description: (Read) Moxtet module name. Format: string diff --git a/Documentation/ABI/testing/sysfs-bus-nfit b/Documentation/ABI/testing/sysfs-bus-nfit index e4f76e7eab93..63ef0b9ecce7 100644 --- a/Documentation/ABI/testing/sysfs-bus-nfit +++ b/Documentation/ABI/testing/sysfs-bus-nfit @@ -1,4 +1,4 @@ -For all of the nmem device attributes under nfit/*, see the 'NVDIMM Firmware +For all of the nmem device attributes under ``nfit/*``, see the 'NVDIMM Firmware Interface Table (NFIT)' section in the ACPI specification (http://www.uefi.org/specifications) for more details. diff --git a/Documentation/ABI/testing/sysfs-bus-nvdimm b/Documentation/ABI/testing/sysfs-bus-nvdimm index d64380262be8..bff84a16812a 100644 --- a/Documentation/ABI/testing/sysfs-bus-nvdimm +++ b/Documentation/ABI/testing/sysfs-bus-nvdimm @@ -1,2 +1,8 @@ +What: nvdimm +Date: July 2020 +KernelVersion: 5.8 +Contact: Dan Williams <dan.j.williams@intel.com> +Description: + The libnvdimm sub-system implements a common sysfs interface for platform nvdimm resources. See Documentation/driver-api/nvdimm/. diff --git a/Documentation/ABI/testing/sysfs-bus-papr-pmem b/Documentation/ABI/testing/sysfs-bus-papr-pmem index c1a67275c43f..8316c33862a0 100644 --- a/Documentation/ABI/testing/sysfs-bus-papr-pmem +++ b/Documentation/ABI/testing/sysfs-bus-papr-pmem @@ -11,19 +11,26 @@ Description: at 'Documentation/powerpc/papr_hcalls.rst' . Below are the flags reported in this sysfs file: - * "not_armed" : Indicates that NVDIMM contents will not + * "not_armed" + Indicates that NVDIMM contents will not survive a power cycle. - * "flush_fail" : Indicates that NVDIMM contents + * "flush_fail" + Indicates that NVDIMM contents couldn't be flushed during last shut-down event. - * "restore_fail": Indicates that NVDIMM contents + * "restore_fail" + Indicates that NVDIMM contents couldn't be restored during NVDIMM initialization. - * "encrypted" : NVDIMM contents are encrypted. - * "smart_notify": There is health event for the NVDIMM. - * "scrubbed" : Indicating that contents of the + * "encrypted" + NVDIMM contents are encrypted. + * "smart_notify" + There is health event for the NVDIMM. + * "scrubbed" + Indicating that contents of the NVDIMM have been scrubbed. - * "locked" : Indicating that NVDIMM contents cant + * "locked" + Indicating that NVDIMM contents cant be modified until next power cycle. What: /sys/bus/nd/devices/nmemX/papr/perf_stats @@ -51,4 +58,4 @@ Description: * "MedWDur " : Media Write Duration * "CchRHCnt" : Cache Read Hit Count * "CchWHCnt" : Cache Write Hit Count - * "FastWCnt" : Fast Write Count
\ No newline at end of file + * "FastWCnt" : Fast Write Count diff --git a/Documentation/ABI/testing/sysfs-bus-pci b/Documentation/ABI/testing/sysfs-bus-pci index 450296cc7948..77ad9ec3c801 100644 --- a/Documentation/ABI/testing/sysfs-bus-pci +++ b/Documentation/ABI/testing/sysfs-bus-pci @@ -7,8 +7,10 @@ Description: this location. This is useful for overriding default bindings. The format for the location is: DDDD:BB:DD.F. That is Domain:Bus:Device.Function and is the same as - found in /sys/bus/pci/devices/. For example: - # echo 0000:00:19.0 > /sys/bus/pci/drivers/foo/bind + found in /sys/bus/pci/devices/. For example:: + + # echo 0000:00:19.0 > /sys/bus/pci/drivers/foo/bind + (Note: kernels before 2.6.28 may require echo -n). What: /sys/bus/pci/drivers/.../unbind @@ -20,8 +22,10 @@ Description: this location. This may be useful when overriding default bindings. The format for the location is: DDDD:BB:DD.F. That is Domain:Bus:Device.Function and is the same as - found in /sys/bus/pci/devices/. For example: - # echo 0000:00:19.0 > /sys/bus/pci/drivers/foo/unbind + found in /sys/bus/pci/devices/. For example:: + + # echo 0000:00:19.0 > /sys/bus/pci/drivers/foo/unbind + (Note: kernels before 2.6.28 may require echo -n). What: /sys/bus/pci/drivers/.../new_id @@ -38,8 +42,9 @@ Description: Class, Class Mask, and Private Driver Data. The Vendor ID and Device ID fields are required, the rest are optional. Upon successfully adding an ID, the driver will probe - for the device and attempt to bind to it. For example: - # echo "8086 10f5" > /sys/bus/pci/drivers/foo/new_id + for the device and attempt to bind to it. For example:: + + # echo "8086 10f5" > /sys/bus/pci/drivers/foo/new_id What: /sys/bus/pci/drivers/.../remove_id Date: February 2009 @@ -54,8 +59,9 @@ Description: required, the rest are optional. After successfully removing an ID, the driver will no longer support the device. This is useful to ensure auto probing won't - match the driver to the device. For example: - # echo "8086 10f5" > /sys/bus/pci/drivers/foo/remove_id + match the driver to the device. For example:: + + # echo "8086 10f5" > /sys/bus/pci/drivers/foo/remove_id What: /sys/bus/pci/rescan Date: January 2009 diff --git a/Documentation/ABI/testing/sysfs-bus-pci-devices-aer_stats b/Documentation/ABI/testing/sysfs-bus-pci-devices-aer_stats index 3c9a8c4a25eb..860db53037a5 100644 --- a/Documentation/ABI/testing/sysfs-bus-pci-devices-aer_stats +++ b/Documentation/ABI/testing/sysfs-bus-pci-devices-aer_stats @@ -1,6 +1,6 @@ -========================== 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 @@ -17,19 +17,18 @@ 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 -------------------------------------------------------------------------- + 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 @@ -39,28 +38,27 @@ 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 -------------------------------------------------------------------------- + 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 @@ -70,32 +68,31 @@ 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 -------------------------------------------------------------------------- + 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 diff --git a/Documentation/ABI/testing/sysfs-bus-pci-devices-catpt b/Documentation/ABI/testing/sysfs-bus-pci-devices-catpt index 8a200f4eefbd..f85db86d63e8 100644 --- a/Documentation/ABI/testing/sysfs-bus-pci-devices-catpt +++ b/Documentation/ABI/testing/sysfs-bus-pci-devices-catpt @@ -4,6 +4,7 @@ Contact: Cezary Rojewski <cezary.rojewski@intel.com> Description: Version of AudioDSP firmware ASoC catpt driver is communicating with. + Format: %d.%d.%d.%d, type:major:minor:build. What: /sys/devices/pci0000:00/<dev>/fw_info diff --git a/Documentation/ABI/testing/sysfs-bus-pci-drivers-ehci_hcd b/Documentation/ABI/testing/sysfs-bus-pci-drivers-ehci_hcd index 60c60fa624b2..c90d97a80855 100644 --- a/Documentation/ABI/testing/sysfs-bus-pci-drivers-ehci_hcd +++ b/Documentation/ABI/testing/sysfs-bus-pci-drivers-ehci_hcd @@ -21,11 +21,11 @@ Description: number returns the port to normal operation. For example: To force the high-speed device attached to - port 4 on bus 2 to run at full speed: + port 4 on bus 2 to run at full speed:: echo 4 >/sys/bus/usb/devices/usb2/../companion - To return the port to high-speed operation: + To return the port to high-speed operation:: echo -4 >/sys/bus/usb/devices/usb2/../companion diff --git a/Documentation/ABI/testing/sysfs-bus-rapidio b/Documentation/ABI/testing/sysfs-bus-rapidio index 13208b27dd87..634ea207a50a 100644 --- a/Documentation/ABI/testing/sysfs-bus-rapidio +++ b/Documentation/ABI/testing/sysfs-bus-rapidio @@ -4,24 +4,27 @@ Description: an individual subdirectory with the following name format of device_name "nn:d:iiii", where: - nn - two-digit hexadecimal ID of RapidIO network where the + ==== ======================================================== + nn two-digit hexadecimal ID of RapidIO network where the device resides - d - device type: 'e' - for endpoint or 's' - for switch - iiii - four-digit device destID for endpoints, or switchID for + d device type: 'e' - for endpoint or 's' - for switch + iiii four-digit device destID for endpoints, or switchID for switches + ==== ======================================================== For example, below is a list of device directories that represents a typical RapidIO network with one switch, one host, and two agent endpoints, as it is seen by the enumerating host - (with destID = 1): + (with destID = 1):: - /sys/bus/rapidio/devices/00:e:0000 - /sys/bus/rapidio/devices/00:e:0002 - /sys/bus/rapidio/devices/00:s:0001 + /sys/bus/rapidio/devices/00:e:0000 + /sys/bus/rapidio/devices/00:e:0002 + /sys/bus/rapidio/devices/00:s:0001 - NOTE: An enumerating or discovering endpoint does not create a - sysfs entry for itself, this is why an endpoint with destID=1 is - not shown in the list. + NOTE: + An enumerating or discovering endpoint does not create a + sysfs entry for itself, this is why an endpoint with destID=1 + is not shown in the list. Attributes Common for All RapidIO Devices ----------------------------------------- diff --git a/Documentation/ABI/testing/sysfs-bus-rbd b/Documentation/ABI/testing/sysfs-bus-rbd index cc30bee8b5f4..417a2fe21be1 100644 --- a/Documentation/ABI/testing/sysfs-bus-rbd +++ b/Documentation/ABI/testing/sysfs-bus-rbd @@ -7,6 +7,8 @@ Description: Usage: <mon ip addr> <options> <pool name> <rbd image name> [<snap name>] + Example:: + $ echo "192.168.0.1 name=admin rbd foo" > /sys/bus/rbd/add The snapshot name can be "-" or omitted to map the image @@ -23,6 +25,8 @@ Description: Usage: <dev-id> [force] + Example:: + $ echo 2 > /sys/bus/rbd/remove Optional "force" argument which when passed will wait for @@ -80,26 +84,29 @@ Date: Oct, 2010 KernelVersion: v2.6.37 Contact: Sage Weil <sage@newdream.net> Description: - size: (RO) The size (in bytes) of the mapped block + + ============== ================================================ + size (RO) The size (in bytes) of the mapped block device. - major: (RO) The block device major number. + major (RO) The block device major number. - client_id: (RO) The ceph unique client id that was assigned + client_id (RO) The ceph unique client id that was assigned for this specific session. - pool: (RO) The name of the storage pool where this rbd + pool (RO) The name of the storage pool where this rbd image resides. An rbd image name is unique within its pool. - name: (RO) The name of the rbd image. + name (RO) The name of the rbd image. - refresh: (WO) Writing to this file will reread the image + refresh (WO) Writing to this file will reread the image header data and set all relevant data structures accordingly. - current_snap: (RO) The current snapshot for which the device + current_snap (RO) The current snapshot for which the device is mapped. + ============== ================================================ What: /sys/bus/rbd/devices/<dev-id>/pool_id @@ -117,11 +124,13 @@ Date: Oct, 2012 KernelVersion: v3.7 Contact: Sage Weil <sage@newdream.net> Description: - image_id: (RO) The unique id for the rbd image. (For rbd + ========= =============================================== + image_id (RO) The unique id for the rbd image. (For rbd image format 1 this is empty.) - features: (RO) A hexadecimal encoding of the feature bits + features (RO) A hexadecimal encoding of the feature bits for this image. + ========= =============================================== What: /sys/bus/rbd/devices/<dev-id>/parent @@ -149,14 +158,16 @@ Date: Aug, 2016 KernelVersion: v4.9 Contact: Sage Weil <sage@newdream.net> Description: - snap_id: (RO) The current snapshot's id. + ============ ================================================ + snap_id (RO) The current snapshot's id. - config_info: (RO) The string written into + config_info (RO) The string written into /sys/bus/rbd/add{,_single_major}. - cluster_fsid: (RO) The ceph cluster UUID. + cluster_fsid (RO) The ceph cluster UUID. - client_addr: (RO) The ceph unique client + client_addr (RO) The ceph unique client entity_addr_t (address + nonce). The format is <address>:<port>/<nonce>: '1.2.3.4:1234/5678' or '[1:2:3:4:5:6:7:8]:1234/5678'. + ============ ================================================ diff --git a/Documentation/ABI/testing/sysfs-bus-siox b/Documentation/ABI/testing/sysfs-bus-siox index c2a403f20b90..50e80238f30d 100644 --- a/Documentation/ABI/testing/sysfs-bus-siox +++ b/Documentation/ABI/testing/sysfs-bus-siox @@ -8,6 +8,7 @@ Description: When the file contains a "1" the bus is operated and periodically does a push-pull cycle to write and read data from the connected devices. + When writing a "0" or "1" the bus moves to the described state. What: /sys/bus/siox/devices/siox-X/device_add @@ -21,8 +22,10 @@ Description: to add a new device dynamically. <type> is the name that is used to match to a driver (similar to the platform bus). <inbytes> and <outbytes> define the length of the input and output shift register in bytes respectively. + <statustype> defines the 4 bit device type that is check to identify connection problems. + The new device is added to the end of the existing chain. What: /sys/bus/siox/devices/siox-X/device_remove diff --git a/Documentation/ABI/testing/sysfs-bus-thunderbolt b/Documentation/ABI/testing/sysfs-bus-thunderbolt index dd565c378b40..0b4ab9e4b8f4 100644 --- a/Documentation/ABI/testing/sysfs-bus-thunderbolt +++ b/Documentation/ABI/testing/sysfs-bus-thunderbolt @@ -37,16 +37,18 @@ Contact: thunderbolt-software@lists.01.org Description: This attribute holds current Thunderbolt security level set by the system BIOS. Possible values are: - none: All devices are automatically authorized - user: Devices are only authorized based on writing - appropriate value to the authorized attribute - secure: Require devices that support secure connect at - minimum. User needs to authorize each device. - dponly: Automatically tunnel Display port (and USB). No - PCIe tunnels are created. - usbonly: Automatically tunnel USB controller of the + ======= ================================================== + none All devices are automatically authorized + user Devices are only authorized based on writing + appropriate value to the authorized attribute + secure Require devices that support secure connect at + minimum. User needs to authorize each device. + dponly Automatically tunnel Display port (and USB). No + PCIe tunnels are created. + usbonly Automatically tunnel USB controller of the connected Thunderbolt dock (and Display Port). All PCIe links downstream of the dock are removed. + ======= ================================================== What: /sys/bus/thunderbolt/devices/.../authorized Date: Sep 2017 @@ -61,17 +63,23 @@ Description: This attribute is used to authorize Thunderbolt devices yet authorized. Possible values are supported: - 1: The device will be authorized and connected + + == =========================================== + 1 The device will be authorized and connected + == =========================================== When key attribute contains 32 byte hex string the possible values are: - 1: The 32 byte hex string is added to the device NVM and - the device is authorized. - 2: Send a challenge based on the 32 byte hex string. If the - challenge response from device is valid, the device is - authorized. In case of failure errno will be ENOKEY if - the device did not contain a key at all, and - |