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path: root/drivers/misc/pci_endpoint_test.c
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2025-04-23misc: pci_endpoint_test: Defer IRQ allocation until ioctl(PCITEST_SET_IRQTYPE)Niklas Cassel
Commit a402006d48a9 ("misc: pci_endpoint_test: Remove global 'irq_type' and 'no_msi'") changed so that the default IRQ vector requested by pci_endpoint_test_probe() was no longer the module param 'irq_type', but instead test->irq_type. test->irq_type is by default IRQ_TYPE_UNDEFINED (until someone calls ioctl(PCITEST_SET_IRQTYPE)). However, the commit also changed so that after initializing test->irq_type to IRQ_TYPE_UNDEFINED, it also overrides it with driver_data->irq_type, if the PCI device and vendor ID provides driver_data. This causes a regression for PCI device and vendor IDs that do not provide driver_data, and the host side pci_endpoint_test_driver driver failed to probe on such platforms: pci-endpoint-test 0001:01:00.0: Invalid IRQ type selected pci-endpoint-test 0001:01:00.0: probe with driver pci-endpoint-test failed with error -22 Considering that the pci endpoint selftests and the old pcitest.sh always call ioctl(PCITEST_SET_IRQTYPE) before performing any test that requires IRQs, fix the regression by removing the allocation of IRQs in pci_endpoint_test_probe(). The IRQ allocation will occur when ioctl(PCITEST_SET_IRQTYPE) is called. A positive side effect of this is that even if the endpoint controller has issues with IRQs, the user can do still do all the tests/ioctls() that do not require working IRQs, e.g. PCITEST_BAR and PCITEST_BARS. This also means that we can remove the now unused irq_type from driver_data. The irq_type will always be the one configured by the user using ioctl(PCITEST_SET_IRQTYPE). (A user that does not know, or care which irq_type that is used, can use PCITEST_IRQ_TYPE_AUTO. This has superseded the need for a default irq_type in driver_data.) [bhelgaas: add probe failure details] Fixes: a402006d48a9c ("misc: pci_endpoint_test: Remove global 'irq_type' and 'no_msi'") Signed-off-by: Niklas Cassel <cassel@kernel.org> Signed-off-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org> Signed-off-by: Bjorn Helgaas <bhelgaas@google.com> Tested-by: Frank Li <Frank.Li@nxp.com> Reviewed-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org> Reviewed-by: Frank Li <Frank.Li@nxp.com> Link: https://patch.msgid.link/20250416142825.336554-2-cassel@kernel.org
2025-03-27Merge branch 'pci/controller/dwc'Bjorn Helgaas
- Move struct dwc_pcie_vsec_id to include/linux/pcie-dwc.h, where it can be shared by debugfs, perf, sysfs, etc (Manivannan Sadhasivam) - Add dw_pcie_find_vsec_capability() to locate Vendor Specific Extended Capabilities (Shradha Todi) - Add debugfs-based Silicon Debug, Error Injection, Statistical Counter support for DWC (Shradha Todi) - Add debugfs property to expose LTSSM status of DWC PCIe link (Hans Zhang) - Add Rockchip Vendor ID and Vendor Specific ID of RAS DES Capability so the DWC debugfs features work for Rockchip as well (Niklas Cassel) * pci/controller/dwc: PCI: dw-rockchip: Hide broken ATS capability for RK3588 running in EP mode PCI: dwc: ep: Add dw_pcie_ep_hide_ext_capability() PCI: dwc: ep: Return -ENOMEM for allocation failures PCI: dwc: Add Rockchip to the RAS DES allowed vendor list PCI: Add Rockchip Vendor ID PCI: dwc: Add debugfs property to provide LTSSM status of the PCIe link PCI: dwc: Add debugfs based Statistical Counter support for DWC PCI: dwc: Add debugfs based Error Injection support for DWC PCI: dwc: Add debugfs based Silicon Debug support for DWC PCI: dwc: Add helper to find the Vendor Specific Extended Capability (VSEC) perf/dwc_pcie: Move common DWC struct definitions to 'pcie-dwc.h'
2025-03-26misc: pci_endpoint_test: Add support for PCITEST_IRQ_TYPE_AUTONiklas Cassel
For PCITEST_MSI we really want to set PCITEST_SET_IRQTYPE explicitly to PCITEST_IRQ_TYPE_MSI, since we want to test if MSI works. For PCITEST_MSIX we really want to set PCITEST_SET_IRQTYPE explicitly to PCITEST_IRQ_TYPE_MSIX, since we want to test if MSI works. For PCITEST_LEGACY_IRQ we really want to set PCITEST_SET_IRQTYPE explicitly to PCITEST_IRQ_TYPE_INTX, since we want to test if INTx works. However, for PCITEST_WRITE, PCITEST_READ, PCITEST_COPY, we really don't care which IRQ type that is used, we just want to use a IRQ type that is supported by the EPC. The old behavior was to always use MSI for PCITEST_WRITE, PCITEST_READ, PCITEST_COPY, was to always set IRQ type to MSI before doing the actual test, however, there are EPC drivers that do not support MSI. Add a new PCITEST_IRQ_TYPE_AUTO, that will use the CAPS register to see which IRQ types the endpoint supports, and use one of the supported IRQ types. For backwards compatibility, if the endpoint does not expose any supported IRQ type in the CAPS register, simply fallback to using MSI, as it was unconditionally done before. Signed-off-by: Niklas Cassel <cassel@kernel.org> Signed-off-by: Krzysztof Wilczyński <kwilczynski@kernel.org> Link: https://lore.kernel.org/r/20250310111016.859445-16-cassel@kernel.org
2025-03-14misc: pci_endpoint_test: Use IRQ_TYPE_* defines from UAPI headerNiklas Cassel
Use the IRQ_TYPE_* defines from the UAPI header rather than duplicating these defines in the driver itself. No functional change. Signed-off-by: Niklas Cassel <cassel@kernel.org> Signed-off-by: Krzysztof Wilczyński <kwilczynski@kernel.org> Link: https://lore.kernel.org/r/20250310111016.859445-11-cassel@kernel.org
2025-03-14misc: pci_endpoint_test: Do not use managed IRQ functionsKunihiko Hayashi
The pci_endpoint_test_request_irq() and pci_endpoint_test_release_irq() are called repeatedly by the users through pci_endpoint_test_set_irq(). So using the managed version of IRQ functions within these functions has no effect. Suggested-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org> Reviewed-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org> Signed-off-by: Kunihiko Hayashi <hayashi.kunihiko@socionext.com> Acked-by: Arnd Bergmann <arnd@arndb.de> Link: https://lore.kernel.org/r/20250225110252.28866-7-hayashi.kunihiko@socionext.com Signed-off-by: Krzysztof Wilczyński <kwilczynski@kernel.org>
2025-03-14misc: pci_endpoint_test: Remove global 'irq_type' and 'no_msi'Kunihiko Hayashi
The global variable "irq_type" preserves the current value of ioctl(GET_IRQTYPE). However, all tests that use interrupts first call ioctl(SET_IRQTYPE) to set "test->irq_type", then write the value of test->irq_type into the register pointed by test_reg_bar, and request the interrupt to the endpoint. The endpoint function driver, pci-epf-test, refers to the register, and determine which type of interrupt to raise. The global variable "irq_type" is never used in the actual test, so remove the variable and replace it with "test->irq_type". Also, for the same reason, the variable "no_msi" can be removed. Initially, "test->irq_type" has IRQ_TYPE_UNDEFINED, and the ioctl(GET_IRQTYPE) before calling ioctl(SET_IRQTYPE) will return an error. Suggested-by: Niklas Cassel <cassel@kernel.org> Suggested-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org> Signed-off-by: Kunihiko Hayashi <hayashi.kunihiko@socionext.com> [kwilczynski: commit log] Signed-off-by: Krzysztof Wilczyński <kwilczynski@kernel.org> Reviewed-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org> Acked-by: Arnd Bergmann <arnd@arndb.de> Link: https://lore.kernel.org/r/20250225110252.28866-6-hayashi.kunihiko@socionext.com
2025-03-14misc: pci_endpoint_test: Fix 'irq_type' to convey the correct typeKunihiko Hayashi
There are two variables that indicate the interrupt type to be used in the next test execution, "irq_type" as global and "test->irq_type". The global is referenced from pci_endpoint_test_get_irq() to preserve the current type for ioctl(PCITEST_GET_IRQTYPE). The type set in this function isn't reflected in the global "irq_type", so ioctl(PCITEST_GET_IRQTYPE) returns the previous type. As a result, the wrong type is displayed in old version of "pcitest" as follows: - Result of running "pcitest -i 0" SET IRQ TYPE TO LEGACY: OKAY - Result of running "pcitest -I" GET IRQ TYPE: MSI Whereas running the new version of "pcitest" in kselftest results in an error as follows: # RUN pci_ep_basic.LEGACY_IRQ_TEST ... # pci_endpoint_test.c:104:LEGACY_IRQ_TEST:Expected 0 (0) == ret (1) # pci_endpoint_test.c:104:LEGACY_IRQ_TEST:Can't get Legacy IRQ type Fix this issue by propagating the current type to the global "irq_type". Fixes: b2ba9225e031 ("misc: pci_endpoint_test: Avoid using module parameter to determine irqtype") Signed-off-by: Kunihiko Hayashi <hayashi.kunihiko@socionext.com> [kwilczynski: commit log] Signed-off-by: Krzysztof Wilczyński <kwilczynski@kernel.org> Reviewed-by: Niklas Cassel <cassel@kernel.org> Reviewed-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org> Cc: stable@vger.kernel.org Link: https://lore.kernel.org/r/20250225110252.28866-5-hayashi.kunihiko@socionext.com
2025-03-08misc: pci_endpoint_test: Fix displaying 'irq_type' after 'request_irq' errorKunihiko Hayashi
There are two variables that indicate the interrupt type to be used in the next test execution, global "irq_type" and "test->irq_type". The former is referenced from pci_endpoint_test_get_irq() to preserve the current type for ioctl(PCITEST_GET_IRQTYPE). In the pci_endpoint_test_request_irq(), since this global variable is referenced when an error occurs, the unintended error message is displayed. For example, after running "pcitest -i 2", the following message shows "MSI 3" even if the current IRQ type becomes "MSI-X": pci-endpoint-test 0000:01:00.0: Failed to request IRQ 30 for MSI 3 SET IRQ TYPE TO MSI-X: NOT OKAY Fix this issue by using "test->irq_type" instead of global "irq_type". Cc: stable@vger.kernel.org Fixes: b2ba9225e031 ("misc: pci_endpoint_test: Avoid using module parameter to determine irqtype") Reviewed-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org> Signed-off-by: Kunihiko Hayashi <hayashi.kunihiko@socionext.com> Link: https://lore.kernel.org/r/20250225110252.28866-4-hayashi.kunihiko@socionext.com [kwilczynski: commit log] Signed-off-by: Krzysztof Wilczyński <kwilczynski@kernel.org>
2025-03-08misc: pci_endpoint_test: Avoid issue of interrupts remaining after ↵Kunihiko Hayashi
request_irq error After devm_request_irq() fails with error in pci_endpoint_test_request_irq(), the pci_endpoint_test_free_irq_vectors() is called assuming that all IRQs have been released. However, some requested IRQs remain unreleased, so there are still /proc/irq/* entries remaining, and this results in WARN() with the following message: remove_proc_entry: removing non-empty directory 'irq/30', leaking at least 'pci-endpoint-test.0' WARNING: CPU: 0 PID: 202 at fs/proc/generic.c:719 remove_proc_entry +0x190/0x19c To solve this issue, set the number of remaining IRQs to test->num_irqs, and release IRQs in advance by calling pci_endpoint_test_release_irq(). Cc: stable@vger.kernel.org Fixes: e03327122e2c ("pci_endpoint_test: Add 2 ioctl commands") Reviewed-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org> Signed-off-by: Kunihiko Hayashi <hayashi.kunihiko@socionext.com> Link: https://lore.kernel.org/r/20250225110252.28866-3-hayashi.kunihiko@socionext.com [kwilczynski: commit log] Signed-off-by: Krzysztof Wilczyński <kwilczynski@kernel.org>
2025-03-08misc: pci_endpoint_test: Handle BAR sizes larger than INT_MAXNiklas Cassel
Running 'pcitest -b 0' fails with "TEST FAILED" when the BAR0 size is e.g. 8 GB. The return value of the pci_resource_len() macro can be larger than that of a signed integer type. Thus, when using 'pcitest' with an 8 GB BAR, the bar_size of the integer type will overflow. Change bar_size from integer to resource_size_t to prevent integer overflow for large BAR sizes with 32-bit compilers. In order to handle 64-bit resource_type_t on 32-bit platforms, we would have needed to use a function like div_u64() or similar. Instead, change the code to use addition instead of division. This avoids the need for div_u64() or similar, while also simplifying the code. Fixes: cda370ec6d1f ("misc: pci_endpoint_test: Avoid using hard-coded BAR sizes") Co-developed-by: Hans Zhang <18255117159@163.com> Signed-off-by: Hans Zhang <18255117159@163.com> Signed-off-by: Niklas Cassel <cassel@kernel.org> Reviewed-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org> Tested-by: Jon Hunter <jonathanh@nvidia.com> Reviewed-by: Frank Li <Frank.Li@nxp.com> Link: https://lore.kernel.org/r/20250124093300.3629624-2-cassel@kernel.org [mani: added fixes tag] Signed-off-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org> Signed-off-by: Krzysztof Wilczyński <kwilczynski@kernel.org>
2025-03-08misc: pci_endpoint_test: Give disabled BARs a distinct error codeNiklas Cassel
The current code returns -ENOMEM if test->bar[barno] is NULL. There can be two reasons why test->bar[barno] is NULL: 1) The pci_ioremap_bar() call in pci_endpoint_test_probe() failed. 2) The BAR was skipped, because it is disabled by the endpoint. Many PCI endpoint controller drivers will disable all BARs in their init function. A disabled BAR will have a size of 0. A PCI endpoint function driver will be able to enable any BAR that is not marked as BAR_RESERVED (which means that the BAR should not be touched by the EPF driver). Thus, perform check if the size is 0, before checking if test->bar[barno] is NULL, such that we can return different errors. This will allow the selftests to return SKIP instead of FAIL for disabled BARs. Signed-off-by: Niklas Cassel <cassel@kernel.org> Reviewed-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org> Link: https://lore.kernel.org/r/20250123120147.3603409-3-cassel@kernel.org Signed-off-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org> [kwilczynski: commit log] Signed-off-by: Krzysztof Wilczyński <kwilczynski@kernel.org>
2025-03-08misc: pci_endpoint_test: Fix potential truncation in pci_endpoint_test_probe()Niklas Cassel
Increase the size of the string buffer to avoid potential truncation in pci_endpoint_test_probe(). This fixes the following build warning when compiling with W=1: drivers/misc/pci_endpoint_test.c:29:49: note: directive argument in the range [0, 2147483647] 29 | #define DRV_MODULE_NAME "pci-endpoint-test" | ^~~~~~~~~~~~~~~~~~~ drivers/misc/pci_endpoint_test.c:998:38: note: in expansion of macro ‘DRV_MODULE_NAME’ 998 | snprintf(name, sizeof(name), DRV_MODULE_NAME ".%d", id); | ^~~~~~~~~~~~~~~ drivers/misc/pci_endpoint_test.c:998:9: note: ‘snprintf’ output between 20 and 29 bytes into a destination of size 24 998 | snprintf(name, sizeof(name), DRV_MODULE_NAME ".%d", id); | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Signed-off-by: Niklas Cassel <cassel@kernel.org> Reviewed-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org> Reviewed-by: Frank Li <Frank.Li@nxp.com> Link: https://lore.kernel.org/r/20250123103127.3581432-2-cassel@kernel.org Signed-off-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org> [kwilczynski: commit log] Signed-off-by: Krzysztof Wilczyński <kwilczynski@kernel.org>
2025-03-08misc: pci_endpoint_test: Fix pci_endpoint_test_bars_read_bar() error handlingNiklas Cassel
Commit f26d37ee9bda ("misc: pci_endpoint_test: Fix IOCTL return value") changed the return value of pci_endpoint_test_bars_read_bar() from false to -EINVAL on error, however, it failed to update the error handling. Fixes: f26d37ee9bda ("misc: pci_endpoint_test: Fix IOCTL return value") Signed-off-by: Niklas Cassel <cassel@kernel.org> Reviewed-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org> Link: https://lore.kernel.org/r/20250204110640.570823-2-cassel@kernel.org Signed-off-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org> Signed-off-by: Krzysztof Wilczyński <kwilczynski@kernel.org>
2025-03-06PCI: Add Rockchip Vendor IDShawn Lin
Move PCI_VENDOR_ID_ROCKCHIP from pci_endpoint_test.c to pci_ids.h and reuse it in pcie-rockchip-host.c. Link: https://lore.kernel.org/r/20250218092120.2322784-2-cassel@kernel.org Signed-off-by: Shawn Lin <shawn.lin@rock-chips.com> Signed-off-by: Niklas Cassel <cassel@kernel.org> Signed-off-by: Bjorn Helgaas <bhelgaas@google.com> Signed-off-by: Krzysztof Wilczyński <kwilczynski@kernel.org>
2025-01-21misc: pci_endpoint_test: Fix IOCTL return valueManivannan Sadhasivam
IOCTLs are supposed to return 0 for success and negative error codes for failure. Currently, this driver is returning 0 for failure and 1 for success, that's not correct. Hence, fix it! Link: https://lore.kernel.org/r/20250116171650.33585-3-manivannan.sadhasivam@linaro.org Fixes: 2c156ac71c6b ("misc: Add host side PCI driver for PCI test function device") Reported-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Closes: https://lore.kernel.org/r/YvzNg5ROnxEApDgS@kroah.com Signed-off-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org> Signed-off-by: Bjorn Helgaas <bhelgaas@google.com> Tested-by: Niklas Cassel <cassel@kernel.org> Reviewed-by: Damien Le Moal <dlemoal@kernel.org> Reviewed-by: Niklas Cassel <cassel@kernel.org>
2025-01-21misc: pci_endpoint_test: Remove redundant 'remainder' testHans Zhang
A BAR size is always a power of two. buf_size = min(SZ_1M, bar_size). If the BAR size is <= 1MB, there will be one iteration, no remainder. If the BAR size is > 1MB, there will be more than one iteration, but the size will always be evenly divisible by 1MB, so no remainder. Link: https://lore.kernel.org/r/20250109094556.1724663-2-18255117159@163.com Suggested-by: Niklas Cassel <cassel@kernel.org> Signed-off-by: Hans Zhang <18255117159@163.com> Signed-off-by: Krzysztof Wilczyński <kwilczynski@kernel.org> Signed-off-by: Bjorn Helgaas <bhelgaas@google.com> Reviewed-by: Niklas Cassel <cassel@kernel.org> Reviewed-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
2025-01-21misc: pci_endpoint_test: Add consecutive BAR testNiklas Cassel
Add a more advanced BAR test that writes all BARs in one go, and then reads them back and verifies that the value matches the BAR number bitwise OR'ed with offset, this allows us to verify: - The BAR number was what we intended to read - The offset was what we intended to read This allows us to detect potential address translation issues on the EP. Reading back the BAR directly after writing will not allow us to detect the case where inbound address translation on the endpoint incorrectly causes multiple BARs to be redirected to the same memory region (within the EP). Link: https://lore.kernel.org/r/20241116032045.2574168-2-cassel@kernel.org Signed-off-by: Niklas Cassel <cassel@kernel.org> Signed-off-by: Krzysztof Wilczyński <kwilczynski@kernel.org> Signed-off-by: Bjorn Helgaas <bhelgaas@google.com> Reviewed-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
2025-01-21misc: pci_endpoint_test: Add support for capabilitiesNiklas Cassel
The test BAR is on the EP side is allocated using pci_epf_alloc_space(), which allocates the backing memory using dma_alloc_coherent(), which will return zeroed memory regardless of __GFP_ZERO was set or not. This means that running a new version of pci-endpoint-test.c (host side) with an old version of pci-epf-test.c (EP side) will not see any capabilities being set (as intended), so this is backwards compatible. Additionally, the EP side always allocates at least 128 bytes for the test BAR (excluding the MSI-X table), this means that adding another register at offset 0x30 is still within the 128 available bytes. For now, we only add the CAP_UNALIGNED_ACCESS capability. If CAP_UNALIGNED_ACCESS is set, that means that the EP side supports reading/writing to an address without any alignment requirements. Thus, if CAP_UNALIGNED_ACCESS is set, make sure that the host side does not add any extra padding to the buffers that we allocate (which was only done in order to get the buffers to satisfy certain alignment requirements by the endpoint controller). Link: https://lore.kernel.org/r/20241203063851.695733-6-cassel@kernel.org Signed-off-by: Niklas Cassel <cassel@kernel.org> Signed-off-by: Krzysztof Wilczyński <kwilczynski@kernel.org> Signed-off-by: Bjorn Helgaas <bhelgaas@google.com> Reviewed-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org> Reviewed-by: Frank Li <Frank.Li@nxp.com>
2024-07-09misc: pci_endpoint_test: Remove unused pci_endpoint_test_bar_{readl,writel} ↵Jiapeng Chong
functions These two functions are defined in the pci_endpoint_test.c file, but not called elsewhere, so delete these unused functions. This fixes the following warning: drivers/misc/pci_endpoint_test.c:144:19: warning: unused function 'pci_endpoint_test_bar_readl'. drivers/misc/pci_endpoint_test.c:150:20: warning: unused function 'pci_endpoint_test_bar_writel'. No functional changes intended. [kwilczynski: commit log] Closes: https://bugzilla.openanolis.cn/show_bug.cgi?id=9064 Link: https://lore.kernel.org/linux-pci/20240704023227.87039-1-jiapeng.chong@linux.alibaba.com Reported-by: Abaci Robot <abaci@linux.alibaba.com> Signed-off-by: Jiapeng Chong <jiapeng.chong@linux.alibaba.com> Signed-off-by: Krzysztof Wilczyński <kwilczynski@kernel.org> Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
2024-07-09misc: pci_endpoint_test: Document policy about adding pci_device_idYoshihiro Shimoda
Add a comment suggesting that if the endpoint controller Vendor and Device ID are programmable, an existing entry might be usable for testing without having to add an entry to pci_endpoint_test_tbl[]. Link: https://lore.kernel.org/linux-pci/20240611125057.1232873-6-yoshihiro.shimoda.uh@renesas.com Signed-off-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com> Signed-off-by: Krzysztof Wilczyński <kwilczynski@kernel.org> Signed-off-by: Bjorn Helgaas <bhelgaas@google.com> Reviewed-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org> Reviewed-by: Frank Li <Frank.Li@nxp.com>
2024-07-09misc: pci_endpoint_test: Refactor dma_set_mask_and_coherent() logicFrank Li
dma_set_mask_and_coherent() should never fail when the mask is >= 32bit, unless the architecture has no DMA support. So no need to check for the error and also no need to set dma_set_mask_and_coherent(32) as a fallback. Even if dma_set_mask_and_coherent(48) fails due to the lack of DMA support (theoretically), then dma_set_mask_and_coherent(32) will also fail for the same reason. So the fallback doesn't make sense. Simplify the code by setting the streaming and coherent DMA mask to 48 bits. Link: https://lore.kernel.org/linux-pci/20240502195903.3191049-1-Frank.Li@nxp.com Signed-off-by: Frank Li <Frank.Li@nxp.com> Signed-off-by: Krzysztof Wilczyński <kwilczynski@kernel.org> Signed-off-by: Bjorn Helgaas <bhelgaas@google.com> Reviewed-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org> Reviewed-by: Niklas Cassel <cassel@kernel.org>
2024-07-09misc: pci_endpoint_test: Use memcpy_toio()/memcpy_fromio() for BAR testsNiklas Cassel
The current code uses writel()/readl(), which has an implicit memory barrier for every single readl()/writel(). Additionally, reading 4 bytes at a time over the PCI bus is not really optimal, considering that this code is running in an ioctl handler. Use memcpy_toio()/memcpy_fromio() for BAR tests. Before patch with a 4MB BAR: $ time /usr/bin/pcitest -b 1 BAR1: OKAY real 0m 1.56s After patch with a 4MB BAR: $ time /usr/bin/pcitest -b 1 BAR1: OKAY real 0m 0.54s Link: https://lore.kernel.org/linux-pci/20240322164139.678228-1-cassel@kernel.org Signed-off-by: Niklas Cassel <cassel@kernel.org> Signed-off-by: Krzysztof Wilczyński <kwilczynski@kernel.org> Signed-off-by: Bjorn Helgaas <bhelgaas@google.com> Reviewed-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org> Reviewed-by: Kuppuswamy Sathyanarayanan <sathyanarayanan.kuppuswamy@linux.intel.com>
2024-07-09misc: pci_endpoint_test: Add support for Rockchip rk3588Niklas Cassel
Rockchip rk3588 requires 64KB alignment for BARs. While there is an existing device_id:vendor_id in the driver with 64KB alignment, that device_id:vendor_id is am654, which uses BAR2 instead of BAR0 as the test_reg_bar, and also has special is_am654_pci_dev() checks in the driver to disallow BAR0. In order to allow testing all BARs, add a new rk3588 entry in the driver. We intentionally do not add the vendor id to pci_ids.h, since the policy for that file is that the vendor id has to be used by multiple drivers. Hopefully, this new entry will be short-lived, as there is a series on the mailing list which intends to move the address alignment restrictions from this driver to the endpoint side. Add a new entry for rk3588 in order to allow us to test all BARs. Link: https://lore.kernel.org/linux-pci/20240607-rockchip-pcie-ep-v1-v5-11-0a042d6b0049@kernel.org Signed-off-by: Niklas Cassel <cassel@kernel.org> Signed-off-by: Krzysztof Wilczyński <kwilczynski@kernel.org> Signed-off-by: Bjorn Helgaas <bhelgaas@google.com> Reviewed-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
2024-01-15Merge branch 'pci/misc'Bjorn Helgaas
- Drop unused struct pci_driver.node member (Mathias Krause) - Fix documentation typos (Attreyee Mukherjee) - Use a unique test pattern for each BAR in the pci_endpoint_test to make it easier to debug address translation issues (Niklas Cassel) - Fix kernel-doc issues (Bjorn Helgaas) * pci/misc: PCI: Fix kernel-doc issues misc: pci_endpoint_test: Use a unique test pattern for each BAR docs: PCI: Fix typos PCI: Remove unused 'node' member from struct pci_driver
2024-01-15Merge branch 'pci/remove-old-api'Bjorn Helgaas
- In dw-xdata-pcie, pci_endpoint_test, and vmd, replace usage of deprecated ida_simple_*() API with ida_alloc() and ida_free() (Christophe JAILLET) * pci/remove-old-api: dw-xdata: Remove usage of the deprecated ida_simple_*() API misc: pci_endpoint_test: Remove usage of the deprecated ida_simple_*() API PCI: vmd: Remove usage of the deprecated ida_simple_*() API
2024-01-06misc: pci_endpoint_test: Use a unique test pattern for each BARNiklas Cassel
Use a unique test pattern for each BAR in. This makes it easier to detect/debug address translation issues, since a developer can dump the backing memory on the EP side, using e.g. devmem, to verify that the address translation for each BAR is actually correct. Link: https://lore.kernel.org/linux-pci/20231215105952.1531683-1-nks@flawful.org Signed-off-by: Niklas Cassel <niklas.cassel@wdc.com> Signed-off-by: Krzysztof Wilczyński <kwilczynski@kernel.org> Reviewed-by: Damien Le Moal <dlemoal@kernel.org> Reviewed-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
2023-12-31misc: pci_endpoint_test: Remove usage of the deprecated ida_simple_*() APIChristophe JAILLET
ida_alloc() and ida_free() should be preferred to the deprecated ida_simple_get() and ida_simple_remove() functions. This is also less verbose. Link: https://lore.kernel.org/linux-pci/47a30441242c4d5f0e00555cbddd7783350ff1b2.1702966523.git.christophe.jaillet@wanadoo.fr Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr> Signed-off-by: Krzysztof Wilczyński <kwilczynski@kernel.org> Reviewed-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
2023-12-18misc: pci_endpoint_test: Use INTX instead of LEGACYDamien Le Moal
In the root complex pci endpoint test function driver, change macros and functions names using the term "legacy" to use "intx" instead to match the term used in the PCI specifications. Link: https://lore.kernel.org/r/20231122060406.14695-6-dlemoal@kernel.org Signed-off-by: Damien Le Moal <dlemoal@kernel.org> Signed-off-by: Lorenzo Pieralisi <lpieralisi@kernel.org> Reviewed-by: Christoph Hellwig <hch@lst.de>
2023-11-03Merge tag 'char-misc-6.7-rc1' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc Pull char/misc updates from Greg KH: "Here is the big set of char/misc and other small driver subsystem changes for 6.7-rc1. Included in here are: - IIO subsystem driver updates and additions (largest part of this pull request) - FPGA subsystem driver updates - Counter subsystem driver updates - ICC subsystem driver updates - extcon subsystem driver updates - mei driver updates and additions - nvmem subsystem driver updates and additions - comedi subsystem dependency fixes - parport driver fixups - cdx subsystem driver and core updates - splice support for /dev/zero and /dev/full - other smaller driver cleanups All of these have been in linux-next for a while with no reported issues" * tag 'char-misc-6.7-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc: (326 commits) cdx: add sysfs for subsystem, class and revision cdx: add sysfs for bus reset cdx: add support for bus enable and disable cdx: Register cdx bus as a device on cdx subsystem cdx: Create symbol namespaces for cdx subsystem cdx: Introduce lock to protect controller ops cdx: Remove cdx controller list from cdx bus system dts: ti: k3-am625-beagleplay: Add beaglecc1352 greybus: Add BeaglePlay Linux Driver dt-bindings: net: Add ti,cc1352p7 dt-bindings: eeprom: at24: allow NVMEM cells based on old syntax dt-bindings: nvmem: SID: allow NVMEM cells based on old syntax Revert "nvmem: add new config option" MAINTAINERS: coresight: Add missing Coresight files misc: pci_endpoint_test: Add deviceID for J721S2 PCIe EP device support firmware: xilinx: Move EXPORT_SYMBOL_GPL next to zynqmp_pm_feature definition uacce: make uacce_class constant ocxl: make ocxl_class constant cxl: make cxl_class constant misc: phantom: make phantom_class constant ...
2023-10-27misc: pci_endpoint_test: Add deviceID for J721S2 PCIe EP device supportSiddharth Vadapalli
Add DEVICE_ID for J721S2 and enable support for endpoints configured with this DEVICE_ID in the pci_endpoint_test driver. Signed-off-by: Siddharth Vadapalli <s-vadapalli@ti.com> Cc: stable <stable@kernel.org> Reviewed-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org> Link: https://lore.kernel.org/r/20231020120248.3168406-1-s-vadapalli@ti.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2023-10-23misc: pci_endpoint_test: Add Device ID for R-Car S4-8 PCIe controllerYoshihiro Shimoda
Add Renesas R8A779F0 in pci_device_id table so that pci-epf-test can be used for testing PCIe EP on R-Car S4-8. Link: https://lore.kernel.org/linux-pci/20231018085631.1121289-16-yoshihiro.shimoda.uh@renesas.com Signed-off-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com> Signed-off-by: Krzysztof Wilczyński <kwilczynski@kernel.org> Acked-by: Manivannan Sadhasivam <mani@kernel.org>
2023-06-23misc: pci_endpoint_test: Simplify pci_endpoint_test_msi_irq()Damien Le Moal
Simplify the code of pci_endpoint_test_msi_irq() by correctly using booleans: remove the msix comparison to false as that variable is already a boolean, and directly return the result of the comparison of the raised interrupt number. Link: https://lore.kernel.org/r/20230415023542.77601-18-dlemoal@kernel.org Signed-off-by: Damien Le Moal <dlemoal@kernel.org> Signed-off-by: Lorenzo Pieralisi <lpieralisi@kernel.org> Signed-off-by: Bjorn Helgaas <bhelgaas@google.com> Reviewed-by: Manivannan Sadhasivam <mani@kernel.org>
2023-06-23misc: pci_endpoint_test: Do not write status in IRQ handlerDamien Le Moal
pci_endpoint_test_irqhandler() always rewrites the status register when an IRQ is raised, either as-is if STATUS_IRQ_RAISED is not set, or with STATUS_IRQ_RAISED cleared if that flag is set. The first case creates a race window with the endpoint side, meaning that the host side test driver may end up reading what it just wrote, thus losing the real status as set by the endpoint side before raising the next interrupt. This can prevent detecting that the STATUS_IRQ_RAISED flag was set by the endpoint. Remove this race window by not clearing the STATUS_IRQ_RAISED status flag and not rewriting that register for every IRQ received. Link: https://lore.kernel.org/r/20230415023542.77601-17-dlemoal@kernel.org Signed-off-by: Damien Le Moal <dlemoal@kernel.org> Signed-off-by: Lorenzo Pieralisi <lpieralisi@kernel.org> Signed-off-by: Bjorn Helgaas <bhelgaas@google.com> Reviewed-by: Manivannan Sadhasivam <mani@kernel.org>
2023-06-23misc: pci_endpoint_test: Re-init completion for every testDamien Le Moal
The irq_raised completion used to detect the end of a test case is initialized when the test device is probed, but never reinitialized again before a test case. As a result, the irq_raised completion synchronization is effective only for the first ioctl test case executed. Any subsequent call to wait_for_completion() by another ioctl() call will immediately return, potentially too early, leading to false positive failures. Fix this by reinitializing the irq_raised completion before starting a new ioctl() test command. Link: https://lore.kernel.org/r/20230415023542.77601-16-dlemoal@kernel.org Fixes: 2c156ac71c6b ("misc: Add host side PCI driver for PCI test function device") Signed-off-by: Damien Le Moal <dlemoal@kernel.org> Signed-off-by: Lorenzo Pieralisi <lpieralisi@kernel.org> Signed-off-by: Bjorn Helgaas <bhelgaas@google.com> Reviewed-by: Manivannan Sadhasivam <mani@kernel.org> Cc: stable@vger.kernel.org
2023-06-23misc: pci_endpoint_test: Free IRQs before removing the deviceDamien Le Moal
In pci_endpoint_test_remove(), freeing the IRQs after removing the device creates a small race window for IRQs to be received with the test device memory already released, causing the IRQ handler to access invalid memory, resulting in an oops. Free the device IRQs before removing the device to avoid this issue. Link: https://lore.kernel.org/r/20230415023542.77601-15-dlemoal@kernel.org Fixes: e03327122e2c ("pci_endpoint_test: Add 2 ioctl commands") Signed-off-by: Damien Le Moal <dlemoal@kernel.org> Signed-off-by: Lorenzo Pieralisi <lpieralisi@kernel.org> Signed-off-by: Bjorn Helgaas <bhelgaas@google.com> Reviewed-by: Manivannan Sadhasivam <mani@kernel.org> Cc: stable@vger.kernel.org
2023-02-22Merge branch 'pci/misc'Bjorn Helgaas
- Drop bogus kernel-doc marker in pci_endpoint_test.c (Randy Dunlap) - Fix epf_ntb_mw_bar_clear() kernel-doc (Yang Yingliang) - Constify struct kobj_type pci_slot_ktype (Thomas Weißschuh) * pci/misc: PCI: hv: Drop duplicate PCI_MSI dependency PCI/sysfs: Constify struct kobj_type pci_slot_ktype PCI: endpoint: pci-epf-vntb: Add epf_ntb_mw_bar_clear() num_mws kernel-doc misc: pci_endpoint_test: Drop initial kernel-doc marker
2023-01-17misc: pci_endpoint_test: Drop initial kernel-doc markerRandy Dunlap
This beginning comment is not kernel-doc, so change the "/**" to a normal "/*" comment to prevent a kernel-doc warning: drivers/misc/pci_endpoint_test.c:3: warning: This comment starts with '/**', but isn't a kernel-doc comment. Refer Documentation/doc-guide/kernel-doc.rst Link: https://lore.kernel.org/r/20230113063937.20912-1-rdunlap@infradead.org Signed-off-by: Randy Dunlap <rdunlap@infradead.org> Signed-off-by: Bjorn Helgaas <bhelgaas@google.com> Cc: Lorenzo Pieralisi <lpieralisi@kernel.org> Cc: Krzysztof Wilczyński <kw@linux.com> Cc: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org> Cc: Kishon Vijay Abraham I <kishon@kernel.org> Cc: linux-pci@vger.kernel.org Cc: Arnd Bergmann <arnd@arndb.de> Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2023-01-16misc: pci_endpoint_test: Add i.MX8 PCIe EP device supportRichard Zhu
Set the DEVICE_ID of i.MX8 PCIe and add i.MX8 PCIE EP device support in pci_endpoint_test driver. Link: https://lore.kernel.org/r/1673847684-31893-11-git-send-email-hongxing.zhu@nxp.com Signed-off-by: Richard Zhu <hongxing.zhu@nxp.com> Signed-off-by: Lorenzo Pieralisi <lpieralisi@kernel.org>
2022-09-09misc: pci_endpoint_test: Fix pci_endpoint_test_{copy,write,read}() panicShunsuke Mie
The dma_map_single() doesn't permit zero length mapping. It causes a follow panic. A panic was reported on arm64: [ 60.137988] ------------[ cut here ]------------ [ 60.142630] kernel BUG at kernel/dma/swiotlb.c:624! [ 60.147508] Internal error: Oops - BUG: 0 [#1] PREEMPT SMP [ 60.152992] Modules linked in: dw_hdmi_cec crct10dif_ce simple_bridge rcar_fdp1 vsp1 rcar_vin videobuf2_vmalloc rcar_csi2 v4l 2_mem2mem videobuf2_dma_contig videobuf2_memops pci_endpoint_test videobuf2_v4l2 videobuf2_common rcar_fcp v4l2_fwnode v4l2_asyn c videodev mc gpio_bd9571mwv max9611 pwm_rcar ccree at24 authenc libdes phy_rcar_gen3_usb3 usb_dmac display_connector pwm_bl [ 60.186252] CPU: 0 PID: 508 Comm: pcitest Not tainted 6.0.0-rc1rpci-dev+ #237 [ 60.193387] Hardware name: Renesas Salvator-X 2nd version board based on r8a77951 (DT) [ 60.201302] pstate: 00000005 (nzcv daif -PAN -UAO -TCO -DIT -SSBS BTYPE=--) [ 60.208263] pc : swiotlb_tbl_map_single+0x2c0/0x590 [ 60.213149] lr : swiotlb_map+0x88/0x1f0 [ 60.216982] sp : ffff80000a883bc0 [ 60.220292] x29: ffff80000a883bc0 x28: 0000000000000000 x27: 0000000000000000 [ 60.227430] x26: 0000000000000000 x25: ffff0004c0da20d0 x24: ffff80000a1f77c0 [ 60.234567] x23: 0000000000000002 x22: 0001000040000010 x21: 000000007a000000 [ 60.241703] x20: 0000000000200000 x19: 0000000000000000 x18: 0000000000000000 [ 60.248840] x17: 0000000000000000 x16: 0000000000000000 x15: ffff0006ff7b9180 [ 60.255977] x14: ffff0006ff7b9180 x13: 0000000000000000 x12: 0000000000000000 [ 60.263113] x11: 0000000000000000 x10: 0000000000000000 x9 : 0000000000000000 [ 60.270249] x8 : 0001000000000010 x7 : ffff0004c6754b20 x6 : 0000000000000000 [ 60.277385] x5 : ffff0004c0da2090 x4 : 0000000000000000 x3 : 0000000000000001 [ 60.284521] x2 : 0000000040000000 x1 : 0000000000000000 x0 : 0000000040000010 [ 60.291658] Call trace: [ 60.294100] swiotlb_tbl_map_single+0x2c0/0x590 [ 60.298629] swiotlb_map+0x88/0x1f0 [ 60.302115] dma_map_page_attrs+0x188/0x230 [ 60.306299] pci_endpoint_test_ioctl+0x5e4/0xd90 [pci_endpoint_test] [ 60.312660] __arm64_sys_ioctl+0xa8/0xf0 [ 60.316583] invoke_syscall+0x44/0x108 [ 60.320334] el0_svc_common.constprop.0+0xcc/0xf0 [ 60.325038] do_el0_svc+0x2c/0xb8 [ 60.328351] el0_svc+0x2c/0x88 [ 60.331406] el0t_64_sync_handler+0xb8/0xc0 [ 60.335587] el0t_64_sync+0x18c/0x190 [ 60.339251] Code: 52800013 d2e00414 35fff45c d503201f (d4210000) [ 60.345344] ---[ end trace 0000000000000000 ]--- To fix it, this patch adds a checking the payload length if it is zero. Fixes: 343dc693f7b7 ("misc: pci_endpoint_test: Prevent some integer overflows") Cc: stable <stable@kernel.org> Signed-off-by: Shunsuke Mie <mie@igel.co.jp> Link: https://lore.kernel.org/r/20220907020100.122588-2-mie@igel.co.jp Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2022-09-09misc: pci_endpoint_test: Aggregate params checking for xferShunsuke Mie
Each transfer test functions have same parameter checking code. This patch unites those to an introduced function. Signed-off-by: Shunsuke Mie <mie@igel.co.jp> Cc: stable <stable@kernel.org> Link: https://lore.kernel.org/r/20220907020100.122588-1-mie@igel.co.jp Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2022-01-11misc: pci_endpoint_test: Terminate statement with semicolonMing Wang
Terminate the misc_device->fops assignment statement with a semicolon. Link: https://lore.kernel.org/r/1641632977-6588-1-git-send-email-wangming01@loongson.cn Fixes: 2c156ac71c6b ("misc: Add host side PCI driver for PCI test function device") Signed-off-by: Ming Wang <wangming01@loongson.cn> Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
2021-09-07Merge tag 'pci-v5.15-changes' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci Pull PCI updates from Bjorn Helgaas: "Enumeration: - Convert controller drivers to generic_handle_domain_irq() (Marc Zyngier) - Simplify VPD (Vital Product Data) access and search (Heiner Kallweit) - Update bnx2, bnx2x, bnxt, cxgb4, cxlflash, sfc, tg3 drivers to use simplified VPD interfaces (Heiner Kallweit) - Run Max Payload Size quirks before configuring MPS; work around ASMedia ASM1062 SATA MPS issue (Marek Behún) Resource management: - Refactor pci_ioremap_bar() and pci_ioremap_wc_bar() (Krzysztof Wilczyński) - Optimize pci_resource_len() to reduce kernel size (Zhen Lei) PCI device hotplug: - Fix a double unmap in ibmphp (Vishal Aslot) PCIe port driver: - Enable Bandwidth Notification only if port supports it (Stuart Hayes) Sysfs/proc/syscalls: - Add schedule point in proc_bus_pci_read() (Krzysztof Wilczyński) - Return ~0 data on pciconfig_read() CAP_SYS_ADMIN failure (Krzysztof Wilczyński) - Return "int" from pciconfig_read() syscall (Krzysztof Wilczyński) Virtualization: - Extend "pci=noats" to also turn on Translation Blocking to protect against some DMA attacks (Alex Williamson) - Add sysfs mechanism to control the type of reset used between device assignments to VMs (Amey Narkhede) - Add support for ACPI _RST reset method (Shanker Donthineni) - Add ACS quirks for Cavium multi-function devices (George Cherian) - Add ACS quirks for NXP LX2xx0 and LX2xx2 platforms (Wasim Khan) - Allow HiSilicon AMBA devices that appear as fake PCI devices to use PASID and SVA (Zhangfei Gao) Endpoint framework: - Add support for SR-IOV Endpoint devices (Kishon Vijay Abraham I) - Zero-initialize endpoint test tool parameters so we don't use random parameters (Shunyong Yang) APM X-Gene PCIe controller driver: - Remove redundant dev_err() call in xgene_msi_probe() (ErKun Yang) Broadcom iProc PCIe controller driver: - Don't fail devm_pci_alloc_host_bridge() on missing 'ranges' because it's optional on BCMA devices (Rob Herring) - Fix BCMA probe resource handling (Rob Herring) Cadence PCIe driver: - Work around J7200 Link training electrical issue by increasing delays in LTSSM (Nadeem Athani) Intel IXP4xx PCI controller driver: - Depend on ARCH_IXP4XX to avoid useless config questions (Geert Uytterhoeven) Intel Keembay PCIe controller driver: - Add Intel Keem Bay PCIe controller (Srikanth Thokala) Marvell Aardvark PCIe controller driver: - Work around config space completion handling issues (Evan Wang) - Increase timeout for config access completions (Pali Rohár) - Emulate CRS Software Visibility bit (Pali Rohár) - Configure resources from DT 'ranges' property to fix I/O space access (Pali Rohár) - Serialize INTx mask/unmask (Pali Rohár) MediaTek PCIe controller driver: - Add MT7629 support in DT (Chuanjia Liu) - Fix an MSI issue (Chuanjia Liu) - Get syscon regmap ("mediatek,generic-pciecfg"), IRQ number ("pci_irq"), PCI domain ("linux,pci-domain") from DT properties if present (Chuanjia Liu) Microsoft Hyper-V host bridge driver: - Add ARM64 support (Boqun Feng) - Support "Create Interrupt v3" message (Sunil Muthuswamy) NVIDIA Tegra PCIe controller driver: - Use seq_puts(), move err_msg from stack to static, fix OF node leak (Christophe JAILLET) NVIDIA Tegra194 PCIe driver: - Disable suspend when in Endpoint mode (Om Prakash Singh) - Fix MSI-X address programming error (Om Prakash Singh) - Disable interrupts during suspend to avoid spurious AER link down (Om Prakash Singh) Renesas R-Car PCIe controller driver: - Work around hardware issue that prevents Link L1->L0 transition (Marek Vasut) - Fix runtime PM refcount leak (Dinghao Liu) Rockchip DesignWare PCIe controller driver: - Add Rockchip RK356X host controller driver (Simon Xue) TI J721E PCIe driver: - Add support for J7200 and AM64 (Kishon Vijay Abraham I) Toshiba Visconti PCIe controller driver: - Add Toshiba Visconti PCIe host controller driver (Nobuhiro Iwamatsu) Xilinx NWL PCIe controller driver: - Enable PCIe reference clock via CCF (Hyun Kwon) Miscellaneous: - Convert sta2x11 from 'pci_' to 'dma_' API (Christophe JAILLET) - Fix pci_dev_str_match_path() alloc while atomic bug (used for kernel parameters that specify devices) (Dan Carpenter) - Remove pointless Precision Time Management warning when PTM is present but not enabled (Jakub Kicinski) - Remove surplus "break" statements (Krzysztof Wilczyński)" * tag 'pci-v5.15-changes' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci: (132 commits) PCI: ibmphp: Fix double unmap of io_mem x86/PCI: sta2x11: switch from 'pci_' to 'dma_' API PCI/VPD: Use unaligned access helpers PCI/VPD: Clean up public VPD defines and inline functions cxgb4: Use pci_vpd_find_id_string() to find VPD ID string PCI/VPD: Add pci_vpd_find_id_string() PCI/VPD: Include post-processing in pci_vpd_find_tag() PCI/VPD: Stop exporting pci_vpd_find_info_keyword() PCI/VPD: Stop exporting pci_vpd_find_tag() PCI: Set dma-can-stall for HiSilicon chips PCI: rockchip-dwc: Add Rockchip RK356X host controller driver PCI: dwc: Remove surplus break statement after return PCI: artpec6: Remove local code block from switch statement PCI: artpec6: Remove surplus break statement after return MAINTAINERS: Add entries for Toshiba Visconti PCIe controller PCI: visconti: Add Toshiba Visconti PCIe host controller driver PCI/portdrv: Enable Bandwidth Notification only if port supports it PCI: Allow PASID on fake PCIe devices without TLP prefixes PCI: mediatek: Use PCI domain to handle ports detection PCI: mediatek: Add new method to get irq number ...
2021-09-02Merge branch 'remotes/lorenzo/pci/endpoint'Bjorn Helgaas
- Add max-virtual-functions to endpoint binding (Kishon Vijay Abraham I) - Add pci_epf_add_vepf() API to add virtual function to endpoint (Kishon Vijay Abraham I) - Add pci_epf_vepf_link() to link virtual function to endpoint physical function (Kishon Vijay Abraham I) - Add virtual function number to pci_epc_ops endpoint ops interfaces (Kishon Vijay Abraham I) - Simplify register base address computation for endpoint BAR configuration (Kishon Vijay Abraham I) - Add support to configure virtual functions in cadence endpoint driver (Kishon Vijay Abraham I) - Add SR-IOV configuration to endpoint test driver (Kishon Vijay Abraham I) - Document configfs usage to create virtual functions for endpoints (Kishon Vijay Abraham I) * remotes/lorenzo/pci/endpoint: Documentation: PCI: endpoint/pci-endpoint-cfs: Guide to use SR-IOV misc: pci_endpoint_test: Populate sriov_configure ops to configure SR-IOV device PCI: cadence: Add support to configure virtual functions PCI: cadence: Simplify code to get register base address for configuring BAR PCI: endpoint: Add virtual function number in pci_epc ops PCI: endpoint: Add support to link a physical function to a virtual function PCI: endpoint: Add support to add virtual function in endpoint core dt-bindings: PCI: pci-ep: Add binding to specify virtual function
2021-08-19misc: pci_endpoint_test: Add deviceID for AM64 and J7200Kishon Vijay Abraham I
Add device ID specific to AM64 and J7200 in pci_endpoint_test so that endpoints configured with those deviceIDs can use pci_endpoint_test driver. Link: https://lore.kernel.org/r/20210811123336.31357-6-kishon@ti.com Signed-off-by: Kishon Vijay Abraham I <kishon@ti.com> Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
2021-08-19misc: pci_endpoint_test: Populate sriov_configure ops to configure SR-IOV deviceKishon Vijay Abraham I
Populate sriov_configure ops with pci_sriov_configure_simple to configure SR-IOV device. Link: https://lore.kernel.org/r/20210819123343.1951-8-kishon@ti.com Signed-off-by: Kishon Vijay Abraham I <kishon@ti.com> Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
2021-07-21misc: pci_endpoint_test: Ensure relationship between miscdev and PCIRichard Weinberger
Set the parent pointer of the misc device to ensure a relationship between PCI and misc dev. That way it is possible to see in /sys/class/misc/ which pci_endpoint_test instance serves what PCI device. Signed-off-by: Richard Weinberger <richard@nod.at> Link: https://lore.kernel.org/r/20210706154310.26773-1-richard@nod.at Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2021-02-23PCI: Add TI J721E device to PCI IDsKishon Vijay Abraham I
Add TI J721E device to the PCI ID database. Since this device has a configurable PCIe endpoint, it could be used with different drivers. Link: https://lore.kernel.org/r/20210201195809.7342-15-kishon@ti.com Signed-off-by: Kishon Vijay Abraham I <kishon@ti.com> Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com> Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
2020-12-09misc: pci_endpoint_test: fix return value of error branchXiongfeng Wang
We return 'err' in the error branch, but this variable may be set as zero before. Fix it by setting 'err' as a negative value before we goto the error label. Fixes: e03327122e2c ("pci_endpoint_test: Add 2 ioctl commands") Reported-by: Hulk Robot <hulkci@huawei.com> Signed-off-by: Xiongfeng Wang <wangxiongfeng2@huawei.com> Link: https://lore.kernel.org/r/1605790158-6780-1-git-send-email-wangxiongfeng2@huawei.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2020-11-03misc: pci_endpoint_test: Remove unnecessary verificationGustavo Pimentel
The first condition of the if statement can never be true, because bar variable is an enum variable type defined between 0 and 5, and also bar variable acquires the value from arg function parameter which is an unsigned long variable. The constant 5 was replaced the the equivalent enum type, in this case BAR_5. Signed-off-by: Gustavo Pimentel <gustavo.pimentel@synopsys.com> Link: https://lore.kernel.org/r/142cbbc215bed4243a219ea17b46f4256ceccb22.1603315690.git.gustavo.pimentel@synopsys.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2020-10-21Merge branch 'remotes/lorenzo/pci/rcar'Bjorn Helgaas
- Document R8A774A1, R8A774B1, R8A774E1 endpoint support in DT (Lad Prabhakar) - Add R8A774A1, R8A774B1, R8A774E1 (RZ/G2M, RZ/G2N, RZ/G2H) IDs to endpoint test (Lad Prabhakar) - Add device tree support for R8A7742 (Lad Prabhakar) - Use "fallthrough" pseudo-keyword (Gustavo A. R. Silva) * remotes/lorenzo/pci/rcar: dt-bindings: PCI: rcar: Add device tree support for r8a7742 PCI: rcar-gen2: Use fallthrough pseudo-keyword misc: pci_endpoint_test: Add Device ID for RZ/G2H PCIe controller dt-bindings: pci: rcar-pci-ep: Document r8a774e1 misc: pci_endpoint_test: Add Device ID for RZ/G2M and RZ/G2N PCIe controllers dt-bindings: pci: rcar-pci-ep: Document r8a774a1 and r8a774b1
generated by cgit (git 2.34.1) at 2025-05-11 20:12:11 +0000