linux/tools/testing/selftests/pci_endpoint, branch master

selftests: pci_endpoint: Skip BAR subrange test on -ENOSPC

2026-04-08T19:41:39Z

In pci-epf-test.c, set the STATUS_NO_RESOURCE status bit if pci_epc_set_bar() returns -ENOSPC. This status bit is used to indicate that there are not enough inbound window resources to allocate the subrange. In pci_endpoint_test.c, return -ENOSPC instead of -EIO when STATUS_NO_RESOURCE is set. In pci_endpoint_test.c, skip the BAR subrange test if -ENOSPC, i.e., there are not enough inbound window resources to run the test. Signed-off-by: Christian Bruel [mani: commit log] Signed-off-by: Manivannan Sadhasivam [bhelgaas: squash related commits] Signed-off-by: Bjorn Helgaas Reviewed-by: Niklas Cassel Reviewed-by: Frank Li Reviewed-by: Koichiro Den Link: https://patch.msgid.link/20260407-skip-bar_subrange-tests-if-enospc-v4-1-6f2e65f2298c@foss.st.com Link: https://patch.msgid.link/20260407-skip-bar_subrange-tests-if-enospc-v4-2-6f2e65f2298c@foss.st.com Link: https://patch.msgid.link/20260407-skip-bar_subrange-tests-if-enospc-v4-3-6f2e65f2298c@foss.st.com

selftests: pci_endpoint: Skip reserved BARs

2026-03-15T16:34:28Z

Running a test against a reserved BAR will result in the pci-epf-test driver returning -ENOBUFS. Make sure that the pci_endpoint_test selftest will return skip instead of failure or success for reserved BARs. Signed-off-by: Niklas Cassel Signed-off-by: Manivannan Sadhasivam Tested-by: Manikanta Maddireddy Tested-by: Koichiro Den Reviewed-by: Manikanta Maddireddy Reviewed-by: Frank Li Link: https://patch.msgid.link/20260312130229.2282001-22-cassel@kernel.org

selftests: pci_endpoint: Skip doorbell test when unsupported

2026-02-24T10:31:04Z

PCITEST_DOORBELL may return -EOPNOTSUPP when the endpoint does not advertise CAP_DYNAMIC_INBOUND_MAPPING. Treat this like other optional capabilities and skip the doorbell test instead of reporting a failure. Suggested-by: Niklas Cassel Signed-off-by: Koichiro Den Signed-off-by: Manivannan Sadhasivam Reviewed-by: Niklas Cassel Link: https://patch.msgid.link/20260215150334.3391943-4-den@valinux.co.jp

selftests: pci_endpoint: Add BAR subrange mapping test case

2026-01-29T23:42:37Z

Add BAR_SUBRANGE_TEST to the pci_endpoint kselftest suite. The test uses the PCITEST_BAR_SUBRANGE ioctl and will skip when the chosen BAR is disabled (-ENODATA), when the endpoint/controller does not support subrange mapping (-EOPNOTSUPP), or when the BAR is reserved for the test register space (-EBUSY). Signed-off-by: Koichiro Den Signed-off-by: Manivannan Sadhasivam Signed-off-by: Bjorn Helgaas Link: https://patch.msgid.link/20260124145012.2794108-9-den@valinux.co.jp

selftests: complete kselftest include centralization

2025-11-27T22:24:31Z

This follow-up patch completes centralization of kselftest.h and ksefltest_harness.h includes in remaining seltests files, replacing all relative paths with a non-relative paths using shared -I include path in lib.mk Tested with gcc-13.3 and clang-18.1, and cross-compiled successfully on riscv, arm64, x86_64 and powerpc arch. [reddybalavignesh9979@gmail.com: add selftests include path for kselftest.h] Link: https://lkml.kernel.org/r/20251017090201.317521-1-reddybalavignesh9979@gmail.com Link: https://lkml.kernel.org/r/20251016104409.68985-1-reddybalavignesh9979@gmail.com Signed-off-by: Bala-Vignesh-Reddy Suggested-by: Andrew Morton Link: https://lore.kernel.org/lkml/20250820143954.33d95635e504e94df01930d0@linux-foundation.org/ Reviewed-by: Wei Yang Cc: David Hildenbrand Cc: David S. Miller Cc: Eric Dumazet Cc: Günther Noack Cc: Jakub Kacinski Cc: Liam Howlett Cc: Lorenzo Stoakes Cc: Michal Hocko Cc: Mickael Salaun Cc: Ming Lei Cc: Paolo Abeni Cc: Shuah Khan Cc: Simon Horman Cc: Suren Baghdasaryan Cc: Vlastimil Babka Signed-off-by: Andrew Morton

selftests: pci_endpoint: Skip IRQ test if IRQ is out of range.

2025-08-27T13:11:00Z

The pci_endpoint_test tests the entire MSI/MSI-X range, which generates false errors on platforms that do not support the whole range. Skip the test in such cases and report accordingly. Signed-off-by: Christian Bruel [mani: reworded description] Signed-off-by: Manivannan Sadhasivam Link: https://patch.msgid.link/20250804170916.3212221-4-christian.bruel@foss.st.com

selftests: pci_endpoint: Add doorbell test case

2025-07-24T21:51:47Z

Add doorbell test case. Signed-off-by: Frank Li [mani: Reworded the testcase description] Signed-off-by: Manivannan Sadhasivam Signed-off-by: Bjorn Helgaas Tested-by: Niklas Cassel Link: https://patch.msgid.link/20250710-ep-msi-v21-8-57683fc7fb25@nxp.com

misc: pci_endpoint_test: Add support for PCITEST_IRQ_TYPE_AUTO

2025-03-26T06:11:54Z

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 Signed-off-by: Krzysztof Wilczyński Link: https://lore.kernel.org/r/20250310111016.859445-16-cassel@kernel.org

selftests: pci_endpoint: Use IRQ_TYPE_* defines from UAPI header

2025-03-14T16:12:04Z

In order to improve readability, use the IRQ_TYPE_* defines from the UAPI header rather than using raw values. No functional change. Signed-off-by: Niklas Cassel Signed-off-by: Krzysztof Wilczyński Link: https://lore.kernel.org/r/20250310111016.859445-12-cassel@kernel.org

selftests: pci_endpoint: Add GET_IRQTYPE checks to each interrupt test

2025-03-08T14:36:00Z

Add GET_IRQTYPE API checks to each interrupt test. While at it, change pci_ep_ioctl() to get the appropriate return value from ioctl(). Suggested-by: Manivannan Sadhasivam Signed-off-by: Kunihiko Hayashi Link: https://lore.kernel.org/r/20250225110252.28866-2-hayashi.kunihiko@socionext.com [kwilczynski: commit log] Signed-off-by: Krzysztof Wilczyński