summaryrefslogtreecommitdiffstats
path: root/Documentation/PCI
Commit message (Collapse)AuthorAgeFilesLines
* PCI: endpoint: Remove unused devm_pci_epc_destroy()Zijun Hu2025-03-081-4/+3
| | | | | | | | | | | | | | | The static function devm_pci_epc_match() is only invoked within the devm_pci_epc_destroy(). However, since it was initially introduced, this new API has had no callers. Thus, remove both the unused API and the static function. Reviewed-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org> Signed-off-by: Zijun Hu <quic_zijuhu@quicinc.com> Link: https://lore.kernel.org/r/20250217-remove_api-v2-1-b169c9117045@quicinc.com Signed-off-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org> [kwilczynski: commit log] Signed-off-by: Krzysztof Wilczyński <kwilczynski@kernel.org>
* Merge tag 'pci-v6.14-changes' of ↵Linus Torvalds2025-01-251-102/+72
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/pci/pci Pull pci updates from Bjorn Helgaas: "Enumeration: - Batch sizing of multiple BARs while memory decoding is disabled instead of disabling/enabling decoding for each BAR individually; this optimizes virtualized environments where toggling decoding enable is expensive (Alex Williamson) - Add host bridge .enable_device() and .disable_device() hooks for bridges that need to configure things like Requester ID to StreamID mapping when enabling devices (Frank Li) - Extend struct pci_ecam_ops with .enable_device() and .disable_device() hooks so drivers that use pci_host_common_probe() instead of their own .probe() have a way to set the .enable_device() callbacks (Marc Zyngier) - Drop 'No bus range found' message so we don't complain when DTs don't specify the default 'bus-range = <0x00 0xff>' (Bjorn Helgaas) - Rename the drivers/pci/of_property.c struct of_pci_range to of_pci_range_entry to avoid confusion with the global of_pci_range in include/linux/of_address.h (Bjorn Helgaas) Driver binding: - Update resource request API documentation to encourage callers to supply a driver name when requesting resources (Philipp Stanner) - Export pci_intx_unmanaged() and pcim_intx() (always managed) so callers of pci_intx() (which is sometimes managed) can explicitly choose the one they need (Philipp Stanner) - Convert drivers from pci_intx() to always-managed pcim_intx() or never-managed pci_intx_unmanaged(): amd_sfh, ata (ahci, ata_piix, pata_rdc, sata_sil24, sata_sis, sata_uli, sata_vsc), bnx2x, bna, ntb, qtnfmac, rtsx, tifm_7xx1, vfio, xen-pciback (Philipp Stanner) - Remove pci_intx_unmanaged() since pci_intx() is now always unmanaged and pcim_intx() is always managed (Philipp Stanner) Error handling: - Unexport pcie_read_tlp_log() to encourage drivers to use PCI core logging rather than building their own (Ilpo Järvinen) - Move TLP Log handling to its own file (Ilpo Järvinen) - Store number of supported End-End TLP Prefixes always so we can read the correct number of DWORDs from the TLP Prefix Log (Ilpo Järvinen) - Read TLP Prefixes in addition to the Header Log in pcie_read_tlp_log() (Ilpo Järvinen) - Add pcie_print_tlp_log() to consolidate printing of TLP Header and Prefix Log (Ilpo Järvinen) - Quirk the Intel Raptor Lake-P PIO log size to accommodate vendor BIOSes that don't configure it correctly (Takashi Iwai) ASPM: - Save parent L1 PM Substates config so when we restore it along with an endpoint's config, the parent info isn't junk (Jian-Hong Pan) Power management: - Avoid D3 for Root Ports on TUXEDO Sirius Gen1 with old BIOS because the system can't wake up from suspend (Werner Sembach) Endpoint framework: - Destroy the EPC device in devm_pci_epc_destroy(), which previously didn't call devres_release() (Zijun Hu) - Finish virtual EP removal in pci_epf_remove_vepf(), which previously caused a subsequent pci_epf_add_vepf() to fail with -EBUSY (Zijun Hu) - Write BAR_MASK before iATU registers in pci_epc_set_bar() so we don't depend on the BAR_MASK reset value being larger than the requested BAR size (Niklas Cassel) - Prevent changing BAR size/flags in pci_epc_set_bar() to prevent reads from bypassing the iATU if we reduced the BAR size (Niklas Cassel) - Verify address alignment when programming iATU so we don't attempt to write bits that are read-only because of the BAR size, which could lead to directing accesses to the wrong address (Niklas Cassel) - Implement artpec6 pci_epc_features so we can rely on all drivers supporting it so we can use it in EPC core code (Niklas Cassel) - Check for BARs of fixed size to prevent endpoint drivers from trying to change their size (Niklas Cassel) - Verify that requested BAR size is a power of two when endpoint driver sets the BAR (Niklas Cassel) Endpoint framework tests: - Clear pci-epf-test dma_chan_rx, not dma_chan_tx, after freeing dma_chan_rx (Mohamed Khalfella) - Correct the DMA MEMCPY test so it doesn't fail if the Endpoint supports both DMA_PRIVATE and DMA_MEMCPY (Manivannan Sadhasivam) - Add pci-epf-test and pci_endpoint_test support for capabilities (Niklas Cassel) - Add Endpoint test for consecutive BARs (Niklas Cassel) - Remove redundant comparison from Endpoint BAR test because a > 1MB BAR can always be exactly covered by iterating with a 1MB buffer (Hans Zhang) - Move and convert PCI Endpoint tests from tools/pci to Kselftests (Manivannan Sadhasivam) Apple PCIe controller driver: - Convert StreamID mapping configuration from a bus notifier to the .enable_device() and .disable_device() callbacks (Marc Zyngier) Freescale i.MX6 PCIe controller driver: - Add Requester ID to StreamID mapping configuration when enabling devices (Frank Li) - Use DWC core suspend/resume functions for imx6 (Frank Li) - Add suspend/resume support for i.MX8MQ, i.MX8Q, and i.MX95 (Richard Zhu) - Add DT compatible string 'fsl,imx8q-pcie-ep' and driver support for i.MX8Q series (i.MX8QM, i.MX8QXP, and i.MX8DXL) Endpoints (Frank Li) - Add DT binding for optional i.MX95 Refclk and driver support to enable it if the platform hasn't enabled it (Richard Zhu) - Configure PHY based on controller being in Root Complex or Endpoint mode (Frank Li) - Rely on dbi2 and iATU base addresses from DT via dw_pcie_get_resources() instead of hardcoding them (Richard Zhu) - Deassert apps_reset in imx_pcie_deassert_core_reset() since it is asserted in imx_pcie_assert_core_reset() (Richard Zhu) - Add missing reference clock enable or disable logic for IMX6SX, IMX7D, IMX8MM (Richard Zhu) - Remove redundant imx7d_pcie_init_phy() since imx7d_pcie_enable_ref_clk() does the same thing (Richard Zhu) Freescale Layerscape PCIe controller driver: - Simplify by using syscon_regmap_lookup_by_phandle_args() instead of syscon_regmap_lookup_by_phandle() followed by of_property_read_u32_array() (Krzysztof Kozlowski) Marvell MVEBU PCIe controller driver: - Add MODULE_DEVICE_TABLE() to enable module autoloading (Liao Chen) MediaTek PCIe Gen3 controller driver: - Use clk_bulk_prepare_enable() instead of separate clk_bulk_prepare() and clk_bulk_enable() (Lorenzo Bianconi) - Rearrange reset assert/deassert so they're both done in the *_power_up() callbacks (Lorenzo Bianconi) - Document that Airoha EN7581 requires PHY init and power-on before PHY reset deassert, unlike other MediaTek Gen3 controllers (Lorenzo Bianconi) - Move Airoha EN7581 post-reset delay from the en7581 clock .enable() method to mtk_pcie_en7581_power_up() (Lorenzo Bianconi) - Sleep instead of delay during Airoha EN7581 power-up, since this is a non-atomic context (Lorenzo Bianconi) - Skip PERST# assertion on Airoha EN7581 during probe and suspend/resume to avoid a hardware defect (Lorenzo Bianconi) - Enable async probe to reduce system startup time (Douglas Anderson) Microchip PolarFlare PCIe controller driver: - Set up the inbound address translation based on whether the platform allows coherent or non-coherent DMA (Daire McNamara) - Update DT binding such that platforms are DMA-coherent by default and must specify 'dma-noncoherent' if needed (Conor Dooley) Mobiveil PCIe controller driver: - Convert mobiveil-pcie.txt to YAML and update 'interrupt-names' and 'reg-names' (Frank Li) Qualcomm PCIe controller driver: - Add DT SM8550 and SM8650 optional 'global' interrupt for link events (Neil Armstrong) - Add DT 'compatible' strings for IPQ5424 PCIe controller (Manikanta Mylavarapu) - If 'global' IRQ is supported for detection of Link Up events, tell DWC core not to wait for link up (Krishna chaitanya chundru) Renesas R-Car PCIe controller driver: - Avoid passing stack buffer as resource name (King Dix) Rockchip PCIe controller driver: - Simplify clock and reset handling by using bulk interfaces (Anand Moon) - Pass typed rockchip_pcie (not void) pointer to rockchip_pcie_disable_clocks() (Anand Moon) - Return -ENOMEM, not success, when pci_epc_mem_alloc_addr() fails (Dan Carpenter) Rockchip DesignWare PCIe controller driver: - Use dll_link_up IRQ to detect Link Up and enumerate devices so users don't have to manually rescan (Niklas Cassel) - Tell DWC core not to wait for link up since the 'sys' interrupt is required and detects Link Up events (Niklas Cassel) Synopsys DesignWare PCIe controller driver: - Don't wait for link up in DWC core if driver can detect Link Up event (Krishna chaitanya chundru) - Update ICC and OPP votes after Link Up events (Krishna chaitanya chundru) - Always stop link in dw_pcie_suspend_noirq(), which is required at least for i.MX8QM to re-establish link on resume (Richard Zhu) - Drop racy and unnecessary LTSSM state check before sending PME_TURN_OFF message in dw_pcie_suspend_noirq() (Richard Zhu) - Add struct of_pci_range.parent_bus_addr for devices that need their immediate parent bus address, not the CPU address, e.g., to program an internal Address Translation Unit (iATU) (Frank Li) TI DRA7xx PCIe controller driver: - Simplify by using syscon_regmap_lookup_by_phandle_args() instead of syscon_regmap_lookup_by_phandle() followed by of_parse_phandle_with_fixed_args() or of_property_read_u32_index() (Krzysztof Kozlowski) Xilinx Versal CPM PCIe controller driver: - Add DT binding and driver support for Xilinx Versal CPM5 (Thippeswamy Havalige) MicroSemi Switchtec management driver: - Add Microchip PCI100X device IDs (Rakesh Babu Saladi) Miscellaneous: - Move reset related sysfs code from pci.c to pci-sysfs.c where other similar code lives (Ilpo Järvinen) - Simplify reset_method_store() memory management by using __free() instead of explicit kfree() cleanup (Ilpo Järvinen) - Constify struct bin_attribute for sysfs, VPD, P2PDMA, and the IBM ACPI hotplug driver (Thomas Weißschuh) - Remove redundant PCI_VSEC_HDR and PCI_VSEC_HDR_LEN_SHIFT (Dongdong Zhang) - Correct documentation of the 'config_acs=' kernel parameter (Akihiko Odaki)" * tag 'pci-v6.14-changes' of git://git.kernel.org/pub/scm/linux/kernel/git/pci/pci: (111 commits) PCI: Batch BAR sizing operations dt-bindings: PCI: microchip,pcie-host: Allow dma-noncoherent PCI: microchip: Set inbound address translation for coherent or non-coherent mode Documentation: Fix pci=config_acs= example PCI: Remove redundant PCI_VSEC_HDR and PCI_VSEC_HDR_LEN_SHIFT PCI: Don't include 'pm_wakeup.h' directly selftests: pci_endpoint: Migrate to Kselftest framework selftests: Move PCI Endpoint tests from tools/pci to Kselftests misc: pci_endpoint_test: Fix IOCTL return value dt-bindings: PCI: qcom: Document the IPQ5424 PCIe controller dt-bindings: PCI: qcom,pcie-sm8550: Document 'global' interrupt dt-bindings: PCI: mobiveil: Convert mobiveil-pcie.txt to YAML PCI: switchtec: Add Microchip PCI100X device IDs misc: pci_endpoint_test: Remove redundant 'remainder' test misc: pci_endpoint_test: Add consecutive BAR test misc: pci_endpoint_test: Add support for capabilities PCI: endpoint: pci-epf-test: Add support for capabilities PCI: endpoint: pci-epf-test: Fix check for DMA MEMCPY test PCI: endpoint: pci-epf-test: Set dma_chan_rx pointer to NULL on error PCI: dwc: Simplify config resource lookup ...
| * selftests: pci_endpoint: Migrate to Kselftest frameworkManivannan Sadhasivam2025-01-211-102/+71
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Migrate the PCI endpoint test to Kselftest framework. All the tests that were part of the previous pcitest.sh file were migrated. Below is the list of tests converted: 1. BAR0 Test 2. BAR1 Test 3. BAR2 Test 4. BAR3 Test 5. BAR4 Test 6. BAR5 Test 7. Consecutive BAR Tests 8. Legacy IRQ Tests 9. MSI Interrupt Tests (MSI1 to MSI32) 10. MSI-X Interrupt Tests (MSI-X1 to MSI-X2048) 11. Read Tests - MEMCPY (For 1, 1024, 1025, 1024000, 1024001 Bytes) 12. Write Tests - MEMCPY (For 1, 1024, 1025, 1024000, 1024001 Bytes) 13. Copy Tests - MEMCPY (For 1, 1024, 1025, 1024000, 1024001 Bytes) 14. Read Tests - DMA (For 1, 1024, 1025, 1024000, 1024001 Bytes) 15. Write Tests - DMA (For 1, 1024, 1025, 1024000, 1024001 Bytes) 16. Copy Tests - DMA (For 1, 1024, 1025, 1024000, 1024001 Bytes) BAR, DMA and MEMCPY tests are added as fixture variants and can be executed separately as below: $ pci_endpoint_test -v BAR0 $ pci_endpoint_test -v dma $ pci_endpoint_test -v memcpy Link: https://lore.kernel.org/r/20250116171650.33585-5-manivannan.sadhasivam@linaro.org Co-developed-by: Aman Gupta <aman1.gupta@samsung.com> Co-developed-by: Padmanabhan Rajanbabu <p.rajanbabu@samsung.com> [mani: reworked based on the IOCTL fix, cleanups, documentation, commit message] Signed-off-by: Aman Gupta <aman1.gupta@samsung.com> Signed-off-by: Padmanabhan Rajanbabu <p.rajanbabu@samsung.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: Niklas Cassel <cassel@kernel.org>
| * selftests: Move PCI Endpoint tests from tools/pci to KselftestsManivannan Sadhasivam2025-01-211-4/+5
| | | | | | | | | | | | | | | | | | | | | | | | | | This just moves the existing tests under tools/pci to tools/testing/selftests/pci_endpoint and adjusts the paths in Makefile accordingly. Migration to Kselftest framework will be done in subsequent commits. Link: https://lore.kernel.org/r/20250116171650.33585-4-manivannan.sadhasivam@linaro.org 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: Niklas Cassel <cassel@kernel.org>
* | Documentation: Document the NVMe PCI endpoint target driverDamien Le Moal2025-01-102-0/+14
|/ | | | | | | | | | | | | | | | | | | | | Add a documentation file (Documentation/nvme/nvme-pci-endpoint-target.rst) for the new NVMe PCI endpoint target driver. This provides an overview of the driver requirements, capabilities and limitations. A user guide describing how to setup a NVMe PCI endpoint device using this driver is also provided. This document is made accessible also from the PCI endpoint documentation using a link. Furthermore, since the existing nvme documentation was not accessible from the top documentation index, an index file is added to Documentation/nvme and this index listed as "NVMe Subsystem" in the "Storage interfaces" section of the subsystem API index. Signed-off-by: Damien Le Moal <dlemoal@kernel.org> Reviewed-by: Christoph Hellwig <hch@lst.de> Acked-by: Bjorn Helgaas <bhelgaas@google.com> Reviewed-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org> Signed-off-by: Keith Busch <kbusch@kernel.org>
* Merge branch 'pci/endpoint'Bjorn Helgaas2024-11-251-0/+29
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | - Add pci_epc_function_is_valid() to avoid repeating common validation checks (Damien Le Moal) - Skip attempts to allocate from endpoint controller memory window if the requested size is larger than the window (Damien Le Moal) - Add and document pci_epc_mem_map() and pci_epc_mem_unmap() to handle controller-specific size and alignment constraints, and add test cases to the endpoint test driver (Damien Le Moal) - Implement dwc pci_epc_ops.align_addr() so pci_epc_mem_map() can observe DWC-specific alignment requirements (Damien Le Moal) - Synchronously cancel command handler work in endpoint test before cleaning up DMA and BARs (Damien Le Moal) - Respect endpoint page size in dw_pcie_ep_align_addr() (Niklas Cassel) - Use dw_pcie_ep_align_addr() in dw_pcie_ep_raise_msi_irq() and dw_pcie_ep_raise_msix_irq() instead of open coding the equivalent (Niklas Cassel) - Remove superfluous 'return' from pci_epf_test_clean_dma_chan() (Wang Jiang) - Avoid NULL dereference if Modem Host Interface Endpoint lacks 'mmio' DT property (Zhongqiu Han) - Release PCI domain ID of Endpoint controller parent (not controller itself) and before unregistering the controller, to avoid use-after-free (Zijun Hu) - Clear secondary (not primary) EPC in pci_epc_remove_epf() when removing the secondary controller associated with an NTB (Zijun Hu) - Fix pci_epc_map map_size kerneldoc (Rick Wertenbroek) * pci/endpoint: PCI: endpoint: Fix pci_epc_map map_size kerneldoc string PCI: endpoint: Clear secondary (not primary) EPC in pci_epc_remove_epf() PCI: endpoint: Fix PCI domain ID release in pci_epc_destroy() PCI: endpoint: epf-mhi: Avoid NULL dereference if DT lacks 'mmio' PCI: endpoint: Remove surplus return statement from pci_epf_test_clean_dma_chan() PCI: dwc: ep: Use align addr function for dw_pcie_ep_raise_{msi,msix}_irq() PCI: endpoint: test: Synchronously cancel command handler work PCI: dwc: endpoint: Implement the pci_epc_ops::align_addr() operation PCI: endpoint: test: Use pci_epc_mem_map/unmap() PCI: endpoint: Update documentation PCI: endpoint: Introduce pci_epc_mem_map()/unmap() PCI: endpoint: Improve pci_epc_mem_alloc_addr() PCI: endpoint: Introduce pci_epc_function_is_valid()
| * PCI: endpoint: Update documentationDamien Le Moal2024-10-161-0/+29
| | | | | | | | | | | | | | | | | | | | | | | | Document the new functions pci_epc_mem_map() and pci_epc_mem_unmap(). Also add the documentation for the functions pci_epc_map_addr() and pci_epc_unmap_addr() that were missing. Signed-off-by: Damien Le Moal <dlemoal@kernel.org> Reviewed-by: Niklas Cassel <cassel@kernel.org> Reviewed-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org> Link: https://lore.kernel.org/r/20241012113246.95634-5-dlemoal@kernel.org Signed-off-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
* | Merge branch 'pci/tph'Bjorn Helgaas2024-11-252-0/+133
|\ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | - Add and document TLP Processing Hints (TPH) support so drivers can enable and disable TPH and the kernel can save/restore TPH configuration (Wei Huang) - Add TPH Steering Tag support so drivers can retrieve Steering Tag values associated with specific CPUs via an ACPI _DSM to direct DMA writes closer to their consumers (Wei Huang) * pci/tph: PCI/TPH: Add TPH documentation PCI/TPH: Add Steering Tag support PCI: Add TLP Processing Hints (TPH) support
| * | PCI/TPH: Add TPH documentationWei Huang2024-10-212-0/+133
| |/ | | | | | | | | | | | | | | | | | | | | | | | | | | Add a document for the TPH feature, including description of "notph" kernel parameter and the API interface. Co-developed-by: Eric Van Tassell <Eric.VanTassell@amd.com> Link: https://lore.kernel.org/r/20241002165954.128085-4-wei.huang2@amd.com Signed-off-by: Eric Van Tassell <Eric.VanTassell@amd.com> Signed-off-by: Wei Huang <wei.huang2@amd.com> Signed-off-by: Bjorn Helgaas <bhelgaas@google.com> Reviewed-by: Ajit Khaparde <ajit.khaparde@broadcom.com> Reviewed-by: Somnath Kotur <somnath.kotur@broadcom.com> Reviewed-by: Andy Gospodarek <andrew.gospodarek@broadcom.com>
* | PCI: Protect Link Control 2 Register with RMW lockingIlpo Järvinen2024-10-231-0/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | The PCIe Bandwidth Controller performs RMW accesses the Link Control 2 Register which can occur concurrently to other sources of Link Control 2 Register writes. Therefore, add Link Control 2 Register among the PCI Express Capability Registers that need RMW locking. Link: https://lore.kernel.org/r/20241018144755.7875-3-ilpo.jarvinen@linux.intel.com Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com> Signed-off-by: Bjorn Helgaas <bhelgaas@google.com> Reviewed-by: Lukas Wunner <lukas@wunner.de> Reviewed-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
* | Documentation PCI: Reformat RMW ops documentationIlpo Järvinen2024-10-231-5/+8
|/ | | | | | | | | | | | | Extract the list of RMW protected PCIe Capability registers into a bullet list to make them easier to pick up on a glance. An upcoming change is going to add one more register among them so it will be much cleaner to have them as bullets. Link: https://lore.kernel.org/r/20241018144755.7875-2-ilpo.jarvinen@linux.intel.com Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com> Signed-off-by: Bjorn Helgaas <bhelgaas@google.com> Reviewed-by: Lukas Wunner <lukas@wunner.de> Reviewed-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
* Documentation: PCI: fix typo in pci.rstAbdul Rahim2024-09-101-1/+1
| | | | | | | | Fix typo: "follow" -> "following" in pci.rst Signed-off-by: Abdul Rahim <abdul.rahim@myyahoo.com> Signed-off-by: Jonathan Corbet <corbet@lwn.net> Message-ID: <20240906205656.8261-1-abdul.rahim@myyahoo.com>
* Merge branch 'pci/misc'Bjorn Helgaas2024-07-191-1/+1
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | - Remove unused struct 'acpi_handle_node' (Dr. David Alan Gilbert) - Use array notation for portdrv .id_table consistently (Masahiro Yamada) - Switch to new Intel CPU model defines (Tony Luck) - Add missing MODULE_DESCRIPTION() macros (Jeff Johnson) * pci/misc: PCI: controller: Add missing MODULE_DESCRIPTION() macros PCI: Add missing MODULE_DESCRIPTION() macros PCI/PM: Switch to new Intel CPU model defines PCI: Use array for .id_table consistently ACPI: PCI: Remove unused struct 'acpi_handle_node'
| * PCI: Use array for .id_table consistentlyMasahiro Yamada2024-06-071-1/+1
| | | | | | | | | | | | | | | | | | | | | | While 'x' and '&x[0]' are equivalent, most of the PCI drivers use the former form for the .id_table. Update some drivers and documentation for consistency. Link: https://lore.kernel.org/r/20240517120458.1260489-1-masahiroy@kernel.org Signed-off-by: Masahiro Yamada <masahiroy@kernel.org> Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
* | Documentation: PCI: pci-endpoint: Fix EPF ops listAlexander Stein2024-07-091-2/+2
|/ | | | | | | | | | | | | | | | | With commit 5779dd0a7dbd7 ("PCI: endpoint: Use notification chain mechanism to notify EPC events to EPF") the linkup callback has been removed and replaced by EPC event notifications. With commit 256ae475201b1 ("PCI: endpoint: Add pci_epf_ops to expose function-specific attrs") a new (optional) add_cfs callback was added. Update documentation accordingly. Link: https://lore.kernel.org/linux-pci/20240418084924.1724703-1-alexander.stein@ew.tq-group.com Signed-off-by: Alexander Stein <alexander.stein@ew.tq-group.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>
* Merge branch 'pci/enumeration'Bjorn Helgaas2024-05-162-2/+2
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | - Clear bridge Secondary Status errors after enumeration since enumeration causes many errors (Vidya Sagar) - Wait for Link Training==0 before starting Link retrain to avoid a race; this was done previously but broken by a faulty merge (Ilpo Järvinen) - Rename PCI_IRQ_LEGACY to PCI_IRQ_INTX to be more specific about what "LEGACY" means (Damien Le Moal) - Update return types of pci_find_capability() stubs to match the extern declarations for the actual implementations (Bjorn Helgaas) - Drop unnecessary pci_enable_device_io() from pata_cs5520 (Heiner Kallweit) - Drop unused pci_enable_device_io() (Heiner Kallweit) - On 2016 and newer BIOSes, skip early E820 check for ECAM regions described in ACPI MCFG; there's no spec requirement for E820 reservations, and some machines don't provide them (Bjorn Helgaas) - If devices were disconnected while suspended, don't wait for them when resuming (Ilpo Järvinen) * pci/enumeration: PCI: Do not wait for disconnected devices when resuming x86/pci: Skip early E820 check for ECAM region PCI: Remove unused pci_enable_device_io() ata: pata_cs5520: Remove unnecessary call to pci_enable_device_io() PCI: Update pci_find_capability() stub return types PCI: Remove PCI_IRQ_LEGACY scsi: vmw_pvscsi: Do not use PCI_IRQ_LEGACY instead of PCI_IRQ_LEGACY scsi: pmcraid: Use PCI_IRQ_INTX instead of PCI_IRQ_LEGACY scsi: mpt3sas: Use PCI_IRQ_INTX instead of PCI_IRQ_LEGACY scsi: megaraid_sas: Use PCI_IRQ_INTX instead of PCI_IRQ_LEGACY scsi: ipr: Use PCI_IRQ_INTX instead of PCI_IRQ_LEGACY scsi: hpsa: Use PCI_IRQ_INTX instead of PCI_IRQ_LEGACY scsi: arcmsr: Use PCI_IRQ_INTX instead of PCI_IRQ_LEGACY wifi: rtw89: Use PCI_IRQ_INTX instead of PCI_IRQ_LEGACY wifi: rtw88: Use PCI_IRQ_INTX instead of PCI_IRQ_LEGACY wifi: ath10k: Refer to INTX instead of LEGACY net: wangxun: Use PCI_IRQ_INTX instead of PCI_IRQ_LEGACY r8169: Use PCI_IRQ_INTX instead of PCI_IRQ_LEGACY net: alx: Use PCI_IRQ_INTX instead of PCI_IRQ_LEGACY net: atlantic: Use PCI_IRQ_INTX instead of PCI_IRQ_LEGACY net: amd-xgbe: Use PCI_IRQ_INTX instead of PCI_IRQ_LEGACY VMCI: Use PCI_IRQ_ALL_TYPES to remove PCI_IRQ_LEGACY use RDMA/vmw_pvrdma: Use PCI_IRQ_INTX instead of PCI_IRQ_LEGACY IB/qib: Use PCI_IRQ_INTX instead of PCI_IRQ_LEGACY drm/amdgpu: Use PCI_IRQ_INTX instead of PCI_IRQ_LEGACY mfd: intel-lpss: Use PCI_IRQ_INTX instead of PCI_IRQ_LEGACY ntb: idt: Use PCI_IRQ_INTX instead of PCI_IRQ_LEGACY platform/x86: intel_ips: Use PCI_IRQ_INTX instead of PCI_IRQ_LEGACY tty: 8250_pci: Use PCI_IRQ_INTX instead of PCI_IRQ_LEGACY usb: hcd-pci: Use PCI_IRQ_INTX instead of PCI_IRQ_LEGACY ASoC: Intel: avs: Use PCI_IRQ_INTX instead of PCI_IRQ_LEGACY Documentation: PCI: Use PCI_IRQ_INTX instead of PCI_IRQ_LEGACY PCI/portdrv: Use PCI_IRQ_INTX instead of PCI_IRQ_LEGACY PCI/MSI: Use PCI_IRQ_INTX instead of PCI_IRQ_LEGACY PCI: Clarify intent of LT wait PCI: Wait for Link Training==0 before starting Link retrain PCI: Clear Secondary Status errors after enumeration
| * Documentation: PCI: Use PCI_IRQ_INTX instead of PCI_IRQ_LEGACYDamien Le Moal2024-04-252-2/+2
| | | | | | | | | | | | | | | | | | Change all references to PCI_IRQ_LEGACY to PCI_IRQ_INTX in the PCI documentation to reflect that PCI_IRQ_LEGACY is deprecated. Link: https://lore.kernel.org/r/20240325070944.3600338-4-dlemoal@kernel.org Signed-off-by: Damien Le Moal <dlemoal@kernel.org> Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
* | PCI/AER: Update aer-inject tool source URLKuppuswamy Sathyanarayanan2024-04-171-1/+1
|/ | | | | | | | | | | | | | The aer-inject tool is no longer maintained in the original repository and is missing a fix related to the musl library. So, with the author's (Huang Ying) consent, it has been moved to a new repository [1]. Update all references to the repository link. Link: https://github.com/intel/aer-inject.git [1] Link: https://lore.kernel.org/r/20240416055035.200085-1-sathyanarayanan.kuppuswamy@linux.intel.com Signed-off-by: Kuppuswamy Sathyanarayanan <sathyanarayanan.kuppuswamy@linux.intel.com> Signed-off-by: Bjorn Helgaas <bhelgaas@google.com> Cc: Huang Ying <ying.huang@intel.com>
* docs: PCI: Fix typosattreyee-muk2023-12-282-2/+2
| | | | | | | | | | | Fix typos in PCI docs. Link: https://lore.kernel.org/r/20231223184720.25645-1-tintinm2017@gmail.com Link: https://lore.kernel.org/r/20231223184412.25598-1-tintinm2017@gmail.com Signed-off-by: Attreyee Mukherjee <tintinm2017@gmail.com> [bhelgaas: squashed, commit log] Signed-off-by: Bjorn Helgaas <bhelgaas@google.com> Acked-by: Randy Dunlap <rdunlap@infradead.org> # for "busses" only
* docs: move powerpc under archCosta Shulyupin2023-10-101-2/+2
| | | | | | | | | | | | | and fix all in-tree references. Architecture-specific documentation is being moved into Documentation/arch/ as a way of cleaning up the top-level documentation directory and making the docs hierarchy more closely match the source hierarchy. Signed-off-by: Costa Shulyupin <costa.shul@redhat.com> Acked-by: Michael Ellerman <mpe@ellerman.id.au> Signed-off-by: Jonathan Corbet <corbet@lwn.net> Link: https://lore.kernel.org/r/20230826165737.2101199-1-costa.shul@redhat.com
* Merge branch 'pci/misc'Bjorn Helgaas2023-08-291-6/+6
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | - Reorder struct pci_dev to avoid holes and reduce size (Christophe JAILLET) - Change pdev->rom_attr_enabled to single bit since it's only a boolean value (Christophe JAILLET) - Use struct_size() in pirq_convert_irt_table() instead of hand-writing it (Christophe JAILLET) - Explicitly include correct DT includes to untangle headers (Rob Herring) - Fix a DOE race between destroy_work_on_stack() and the stack-allocated task->work struct going out of scope in pci_doe() (Ira Weiny) - Use pci_dev_id() when possible instead of manually composing ID from dev->bus->number and dev->devfn (Xiongfeng Wang, Zheng Zengkai) - Move pci_create_resource_files() declarations to linux/pci.h for alpha build warnings (Arnd Bergmann) - Remove unused hotplug function declarations (Yue Haibing) - Remove unused mvebu struct mvebu_pcie.busn (Pali Rohár) - Unexport pcie_port_bus_type (Bjorn Helgaas) - Remove unnecessary sysfs ID local variable initialization (Bjorn Helgaas) - Fix BAR value printk formatting to accommodate 32-bit values (Bjorn Helgaas) - Use consistent pointer types for config access syscall get_user() and put_user() uses (Bjorn Helgaas) - Simplify AER_RECOVER_RING_SIZE definition (Bjorn Helgaas) - Simplify pci_pio_to_address() (Bjorn Helgaas) - Simplify pci_dev_driver() (Bjorn Helgaas) - Fix pci_bus_resetable(), pci_slot_resetable() name typos (Bjorn Helgaas) - Fix code and doc typos and code formatting (Bjorn Helgaas) - Tidy config space save/restore messages (Bjorn Helgaas) * pci/misc: PCI: Tidy config space save/restore messages PCI: Fix code formatting inconsistencies PCI: Fix typos in docs and comments PCI: Fix pci_bus_resetable(), pci_slot_resetable() name typos PCI: Simplify pci_dev_driver() PCI: Simplify pci_pio_to_address() PCI/AER: Simplify AER_RECOVER_RING_SIZE definition PCI: Use consistent put_user() pointer types PCI: Fix printk field formatting PCI: Remove unnecessary initializations PCI: Unexport pcie_port_bus_type PCI: mvebu: Remove unused busn member PCI: Remove unused function declarations PCI/sysfs: Move declarations to linux/pci.h PCI/P2PDMA: Use pci_dev_id() to simplify the code PCI/IOV: Use pci_dev_id() to simplify the code PCI/AER: Use pci_dev_id() to simplify the code PCI: apple: Use pci_dev_id() to simplify the code PCI/DOE: Fix destroy_work_on_stack() race PCI: Explicitly include correct DT includes x86/PCI: Use struct_size() in pirq_convert_irt_table() PCI: Change pdev->rom_attr_enabled to single bit PCI: Reorder pci_dev fields to reduce holes
| * PCI: Fix typos in docs and commentsBjorn Helgaas2023-08-251-6/+6
| | | | | | | | | | | | | | | | | | Fix typos in docs and comments. Link: https://lore.kernel.org/r/20230824193712.542167-11-helgaas@kernel.org Signed-off-by: Bjorn Helgaas <bhelgaas@google.com> Reviewed-by: Randy Dunlap <rdunlap@infradead.org> Reviewed-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
* | PCI: Document the Capability accessor RMW improvementsIlpo Järvinen2023-08-211-5/+9
|/ | | | | | | | | | | | Documentation claims port service drivers should play nice with respect to PCIe Capability changes, but the concurrency control is now provided in the Capability accessors as long as the correct ones are used. Update the documention to match the RMW accessor behavior. Link: https://lore.kernel.org/r/20230717120503.15276-12-ilpo.jarvinen@linux.intel.com Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com> Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
* Merge branch 'pci/controller/endpoint'Bjorn Helgaas2023-06-262-14/+8
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | - Change "PCI Endpoint Virtual NTB driver" Kconfig prompt to be different from "PCI Endpoint NTB driver" (Shunsuke Mie) - Automatically create a function specific attributes group for endpoint drivers to avoid reference counting issues (Damien Le Moal) - Move and unexport pci_epf_type_add_cfs() (Damien Le Moal) - Reinitialize EPF test DMA transfer completion before submitting it to avoid losing the completion notification (Damien Le Moal) - Fix EPF test DMA transfer completion detection (Damien Le Moal) - Submit EPF test DMA transfers with dmaengine_submit(), not tx_submit() (Damien Le Moal) - Simplify EPF test read/write/copy functions (Damien Le Moal) - Simplify EPF test "raise IRQ" interface (Damien Le Moal) - Simplify EPF test IRQ command execution (Damien Le Moal) - Improve EPF test command/status register handling (Damien Le Moal) - Free IRQs before removing device (Damien Le Moal) - Reinitialize IRQ completions for every test (Damien Le Moal) - Don't write status in IRQ handler to avoid race (Damien Le Moal) - Fix dma_chan direction in data transfer test (Yoshihiro Shimoda) - Return pci_epf_type_add_cfs() error if EPF has no driver (Damien Le Moal) - Add kernel-doc for pci_epc_raise_irq() and pci_epc_map_msi_irq() MSI vector parameters (Manivannan Sadhasivam) - Pass EPF device ID to driver probe functions (Manivannan Sadhasivam) - Return -EALREADY if EPC has already been started/stopped (Manivannan Sadhasivam) - Add linkdown notifier support and use it in qcom-ep (Manivannan Sadhasivam) - Add Bus Master Enable event support and use it in qcom-ep (Manivannan Sadhasivam) - Add Qualcomm Modem Host Interface (MHI) endpoint driver (Manivannan Sadhasivam) - Add Layerscape PME interrupt handling to manage link-up notification (Frank Li) * pci/controller/endpoint: PCI: layerscape: Add the endpoint linkup notifier support PCI: endpoint: pci-epf-vntb: Fix typo in comments MAINTAINERS: Add PCI MHI endpoint function driver under MHI bus PCI: endpoint: Add PCI Endpoint function driver for MHI bus PCI: qcom-ep: Add support for BME notification PCI: qcom-ep: Add support for Link down notification PCI: endpoint: Add BME notifier support PCI: endpoint: Add linkdown notifier support PCI: endpoint: Return error if EPC is started/stopped multiple times PCI: endpoint: Pass EPF device ID to the probe function PCI: endpoint: Add missing documentation about the MSI/MSI-X range PCI: endpoint: Improve pci_epf_type_add_cfs() PCI: endpoint: functions/pci-epf-test: Fix dma_chan direction misc: pci_endpoint_test: Simplify pci_endpoint_test_msi_irq() misc: pci_endpoint_test: Do not write status in IRQ handler misc: pci_endpoint_test: Re-init completion for every test misc: pci_endpoint_test: Free IRQs before removing the device PCI: epf-test: Simplify transfers result print PCI: epf-test: Simplify DMA support checks PCI: epf-test: Cleanup request result handling PCI: epf-test: Cleanup pci_epf_test_cmd_handler() PCI: epf-test: Improve handling of command and status registers PCI: epf-test: Simplify IRQ test commands execution PCI: epf-test: Simplify pci_epf_test_raise_irq() PCI: epf-test: Simplify read/write/copy test functions PCI: epf-test: Use dmaengine_submit() to initiate DMA transfer PCI: epf-test: Fix DMA transfer completion detection PCI: epf-test: Fix DMA transfer completion initialization PCI: endpoint: Move pci_epf_type_add_cfs() code PCI: endpoint: Automatically create a function specific attributes group PCI: endpoint: Fix a Kconfig prompt of vNTB driver
| * PCI: endpoint: Automatically create a function specific attributes groupDamien Le Moal2023-06-232-15/+9
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | A PCI endpoint function driver can define function specific attributes under its function configfs directory using the add_cfs() endpoint driver operation. This is done by tying up the mkdir operation for the function configfs directory to a call to the add_cfs() operation. However, there are no checks preventing the user from repeatedly creating function specific attribute directories with different names, resulting in the same endpoint specific attributes group being added multiple times, which also result in an invalid reference counting for the attribute groups. E.g., using the pci-epf-ntb function driver as an example, the user creates the function as follows: $ modprobe pci-epf-ntb $ cd /sys/kernel/config/pci_ep/functions/pci_epf_ntb $ mkdir func0 $ tree func0 func0/ |-- baseclass_code |-- cache_line_size |-- ... `-- vendorid $ mkdir func0/attrs $ tree func0 func0/ |-- attrs | |-- db_count | |-- mw1 | |-- mw2 | |-- mw3 | |-- mw4 | |-- num_mws | `-- spad_count |-- baseclass_code |-- cache_line_size |-- ... `-- vendorid At this point, the function can be started by linking the EP controller. However, if the user mistakenly creates again a directory: $ mkdir func0/attrs2 $ tree func0 func0/ |-- attrs | |-- db_count | |-- mw1 | |-- mw2 | |-- mw3 | |-- mw4 | |-- num_mws | `-- spad_count |-- attrs2 | |-- db_count | |-- mw1 | |-- mw2 | |-- mw3 | |-- mw4 | |-- num_mws | `-- spad_count |-- baseclass_code |-- cache_line_size |-- ... `-- vendorid The endpoint function specific attributes are duplicated and cause a crash when the endpoint function device is torn down: refcount_t: addition on 0; use-after-free. WARNING: CPU: 2 PID: 834 at lib/refcount.c:25 refcount_warn_saturate+0xc8/0x144 CPU: 2 PID: 834 Comm: rmdir Not tainted 6.3.0-rc1 #1 Hardware name: Pine64 RockPro64 v2.1 (DT) pstate: 60000005 (nZCv daif -PAN -UAO -TCO -DIT -SSBS BTYPE=--) ... Call trace: refcount_warn_saturate+0xc8/0x144 config_item_get+0x7c/0x80 configfs_rmdir+0x17c/0x30c vfs_rmdir+0x8c/0x204 do_rmdir+0x158/0x184 __arm64_sys_unlinkat+0x64/0x80 invoke_syscall+0x48/0x114 ... Fix this by modifying pci_epf_cfs_work() to execute the new function pci_ep_cfs_add_type_group() which itself calls pci_epf_type_add_cfs() to obtain the function specific attribute group and the group name (directory name) from the endpoint function driver. If the function driver defines an attribute group, pci_ep_cfs_add_type_group() then proceeds to register this group using configfs_register_group(), thus automatically exposing the function type specific configfs attributes to the user. E.g.: $ modprobe pci-epf-ntb $ cd /sys/kernel/config/pci_ep/functions/pci_epf_ntb $ mkdir func0 $ tree func0 func0/ |-- baseclass_code |-- cache_line_size |-- ... |-- pci_epf_ntb.0 | |-- db_count | |-- mw1 | |-- mw2 | |-- mw3 | |-- mw4 | |-- num_mws | `-- spad_count |-- primary |-- ... `-- vendorid With this change, there is no need for the user to create or delete directories in the endpoint function attributes directory. The pci_epf_type_group_ops group operations are thus removed. Also update the documentation for the pci-epf-ntb and pci-epf-vntb function drivers to reflect this change, removing the explanations showing the need to manually create the sub-directory for the function specific attributes. Link: https://lore.kernel.org/r/20230415023542.77601-2-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>
* | Merge branch 'pci/misc'Bjorn Helgaas2023-06-262-2/+2
|\ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | - Add pci_clear_master() stub for non-CONFIG_PCI (Sui Jingfeng) - Correct documentation typos (Randy Dunlap) * pci/misc: Documentation: PCI: correct spelling PCI: Add pci_clear_master() stub for non-CONFIG_PCI PCI: Expand comment about sorting pci_ids.h entries
| * | Documentation: PCI: correct spellingRandy Dunlap2023-06-262-2/+2
| |/ | | | | | | | | | | | | | | | | | | Correct spelling problems for Documentation/PCI/ as reported by codespell. Link: https://lore.kernel.org/linux-pci/20230209071400.31476-14-rdunlap@infradead.org Signed-off-by: Randy Dunlap <rdunlap@infradead.org> Signed-off-by: Krzysztof Wilczyński <kwilczynski@kernel.org> Acked-by: Bjorn Helgaas <bhelgaas@google.com>
* | Documentation: PCI: Tidy AER documentationBjorn Helgaas2023-06-121-66/+65
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Consistently use: PCIe previously PCIe, PCI Express, or pci express Root Port previously Root Port or root port Endpoint previously EndPoint or endpoint AER previously AER or aer please previously pls Also update a few awkward wordings. Link: https://lore.kernel.org/r/20230609222500.1267795-5-helgaas@kernel.org Signed-off-by: Bjorn Helgaas <bhelgaas@google.com> Reviewed-by: Stefan Roese <sr@denx.de> Reviewed-by: Kuppuswamy Sathyanarayanan <sathyanarayanan.kuppuswamy@linux.intel.com>
* | Documentation: PCI: Update cross references to .rst filesBjorn Helgaas2023-06-122-3/+3
| | | | | | | | | | | | | | | | | | Change references to *.txt to *.rst to match the current filenames. Link: https://lore.kernel.org/r/20230609222500.1267795-4-helgaas@kernel.org Signed-off-by: Bjorn Helgaas <bhelgaas@google.com> Reviewed-by: Stefan Roese <sr@denx.de> Reviewed-by: Kuppuswamy Sathyanarayanan <sathyanarayanan.kuppuswamy@linux.intel.com>
* | Documentation: PCI: Drop recommendation to configure AER CapabilityBjorn Helgaas2023-06-121-54/+2
|/ | | | | | | | | | | | | | | | | | | | Since f26e58bf6f54 ("PCI/AER: Enable error reporting when AER is native"), the PCI core enables PCIe device error reporting for all devices during enumeration, so drivers don't need to do it. Remove the recommendation for drivers to configure AER and call pci_enable_pcie_error_reporting() themselves. Also remove the suggestion that drivers may change AER mask and severity registers. Ownership of these registers is negotiated between the OS and platform firmware. If firmware owns these registers, the OS must not change them. Link: https://lore.kernel.org/r/20230609222500.1267795-3-helgaas@kernel.org Signed-off-by: Bjorn Helgaas <bhelgaas@google.com> Reviewed-by: Dave Jiang <dave.jiang@intel.com> Reviewed-by: Stefan Roese <sr@denx.de> Reviewed-by: Kuppuswamy Sathyanarayanan <sathyanarayanan.kuppuswamy@linux.intel.com>
* ixgb: Remove ixgb driverTony Nguyen2023-03-191-1/+0
| | | | | | | | | | | There are likely no users of this driver as the hardware has been discontinued since 2010. Remove the driver and all references to it in documentation. Suggested-by: Jakub Kicinski <kuba@kernel.org> Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com> Acked-by: Jesse Brandeburg <jesse.brandeburg@intel.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* Docs/subsystem-apis: Remove '[The ]Linux' prefixes from titles of listed ↵SeongJae Park2023-01-241-3/+3
| | | | | | | | | | | | | | | documents Some documents that listed on subsystem-apis have 'Linux' or 'The Linux' title prefixes. It's duplicated information, and makes finding the document of interest with human eyes not easy. Remove the prefixes from the titles. Signed-off-by: SeongJae Park <sj@kernel.org> Acked-by: Iwona Winiarska <iwona.winiarska@intel.com> Acked-by: Bjorn Helgaas <bhelgaas@google.com> Link: https://lore.kernel.org/r/20230122184834.181977-1-sj@kernel.org Signed-off-by: Jonathan Corbet <corbet@lwn.net>
* Merge tag 'cxl-for-6.2' of git://git.kernel.org/pub/scm/linux/kernel/git/cxl/cxlLinus Torvalds2022-12-121-0/+7
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Pull cxl updates from Dan Williams: "Compute Express Link (CXL) updates for 6.2. While it may seem backwards, the CXL update this time around includes some focus on CXL 1.x enabling where the work to date had been with CXL 2.0 (VH topologies) in mind. First generation CXL can mostly be supported via BIOS, similar to DDR, however it became clear there are use cases for OS native CXL error handling and some CXL 3.0 endpoint features can be deployed on CXL 1.x hosts (Restricted CXL Host (RCH) topologies). So, this update brings RCH topologies into the Linux CXL device model. In support of the ongoing CXL 2.0+ enabling two new core kernel facilities are added. One is the ability for the kernel to flag collisions between userspace access to PCI configuration registers and kernel accesses. This is brought on by the PCIe Data-Object-Exchange (DOE) facility, a hardware mailbox over config-cycles. The other is a cpu_cache_invalidate_memregion() API that maps to wbinvd_on_all_cpus() on x86. To prevent abuse it is disabled in guest VMs and architectures that do not support it yet. The CXL paths that need it, dynamic memory region creation and security commands (erase / unlock), are disabled when it is not present. As for the CXL 2.0+ this cycle the subsystem gains support Persistent Memory Security commands, error handling in response to PCIe AER notifications, and support for the "XOR" host bridge interleave algorithm. Summary: - Add the cpu_cache_invalidate_memregion() API for cache flushing in response to physical memory reconfiguration, or memory-side data invalidation from operations like secure erase or memory-device unlock. - Add a facility for the kernel to warn about collisions between kernel and userspace access to PCI configuration registers - Add support for Restricted CXL Host (RCH) topologies (formerly CXL 1.1) - Add handling and reporting of CXL errors reported via the PCIe AER mechanism - Add support for CXL Persistent Memory Security commands - Add support for the "XOR" algorithm for CXL host bridge interleave - Rework / simplify CXL to NVDIMM interactions - Miscellaneous cleanups and fixes" * tag 'cxl-for-6.2' of git://git.kernel.org/pub/scm/linux/kernel/git/cxl/cxl: (71 commits) cxl/region: Fix memdev reuse check cxl/pci: Remove endian confusion cxl/pci: Add some type-safety to the AER trace points cxl/security: Drop security command ioctl uapi cxl/mbox: Add variable output size validation for internal commands cxl/mbox: Enable cxl_mbox_send_cmd() users to validate output size cxl/security: Fix Get Security State output payload endian handling cxl: update names for interleave ways conversion macros cxl: update names for interleave granularity conversion macros cxl/acpi: Warn about an invalid CHBCR in an existing CHBS entry tools/testing/cxl: Require cache invalidation bypass cxl/acpi: Fail decoder add if CXIMS for HBIG is missing cxl/region: Fix spelling mistake "memergion" -> "memregion" cxl/regs: Fix sparse warning cxl/acpi: Set ACPI's CXL _OSC to indicate RCD mode support tools/testing/cxl: Add an RCH topology cxl/port: Add RCD endpoint port enumeration cxl/mem: Move devm_cxl_add_endpoint() from cxl_core to cxl_mem tools/testing/cxl: Add XOR Math support to cxl_test cxl/acpi: Support CXL XOR Interleave Math (CXIMS) ...
| * PCI/AER: Add optional logging callback for correctable errorDave Jiang2022-12-031-0/+7
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Some new devices such as CXL devices may want to record additional error information on a corrected error. Add a callback to allow the PCI device driver to do additional logging such as providing additional stats for user space RAS monitoring. For CXL device, this is actually a need due to CXL needing to write to the CXL RAS capability structure correctable error status register in order to clear the unmasked correctable errors. See CXL spec rev3.0 8.2.4.16. Suggested-by: Jonathan Cameron <Jonathan.Cameron@huawei.com> Reviewed-by: Kuppuswamy Sathyanarayanan <sathyanarayanan.kuppuswamy@linux.intel.com> Reviewed-by: Jonathan Cameron <Jonathan.Cameron@huawei.com> Acked-by: Bjorn Helgaas <bhelgaas@google.com> Signed-off-by: Dave Jiang <dave.jiang@intel.com> Link: https://lore.kernel.org/r/166984619233.2804404.3966368388544312674.stgit@djiang5-desk3.ch.intel.com Signed-off-by: Dan Williams <dan.j.williams@intel.com>
* | Documentation: PCI: Add reference to PCI/MSI device driver APIsAhmed S. Darwish2022-11-171-0/+10
|/ | | | | | | | | | | | | | | All exported device-driver MSI APIs are now grouped in one place at drivers/pci/msi/api.c with comprehensive kernel-docs added. Reference these kernel-docs in the official PCI/MSI howto. Signed-off-by: Ahmed S. Darwish <darwi@linutronix.de> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Reviewed-by: Jason Gunthorpe <jgg@nvidia.com> Acked-by: Bjorn Helgaas <bhelgaas@google.com> Link: https://lore.kernel.org/r/20221111122015.397739421@linutronix.de
* Merge tag 'ntb-5.20' of https://github.com/jonmason/ntbLinus Torvalds2022-08-133-0/+298
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Pull NTB updates from Jon Mason: "Non-Transparent Bridge updates. Fix of heap data and clang warnings, support for a new Intel NTB device, and NTB EndPoint Function (EPF) support and the various fixes for that" * tag 'ntb-5.20' of https://github.com/jonmason/ntb: MAINTAINERS: add PCI Endpoint NTB drivers to NTB files NTB: EPF: Tidy up some bounds checks NTB: EPF: Fix error code in epf_ntb_bind() PCI: endpoint: pci-epf-vntb: reduce several globals to statics PCI: endpoint: pci-epf-vntb: fix error handle in epf_ntb_mw_bar_init() PCI: endpoint: Fix Kconfig dependency NTB: EPF: set pointer addr to null using NULL rather than 0 Documentation: PCI: extend subheading underline for "lspci output" section Documentation: PCI: Use code-block block for scratchpad registers diagram Documentation: PCI: Add specification for the PCI vNTB function device PCI: endpoint: Support NTB transfer between RC and EP NTB: epf: Allow more flexibility in the memory BAR map method PCI: designware-ep: Allow pci_epc_set_bar() update inbound map address ntb: intel: add GNR support for Intel PCIe gen5 NTB NTB: ntb_tool: uninitialized heap data in tool_fn_write() ntb: idt: fix clang -Wformat warnings
| * Documentation: PCI: extend subheading underline for "lspci output" sectionBagas Sanjaya2022-08-091-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The underline syntax for "lspci output..." section is off-by-one less than the section heading's length, hence triggers the warning: Documentation/PCI/endpoint/pci-vntb-howto.rst:131: WARNING: Title underline too short. Extend the underline by one to match the heading length. Link: https://lore.kernel.org/linux-next/20220621200235.211b2e32@canb.auug.org.au/ Fixes: 0c4b285d9636cc ("Documentation: PCI: Add specification for the PCI vNTB function device") Reported-by: Stephen Rothwell <sfr@canb.auug.org.au> Cc: Kishon Vijay Abraham I <kishon@ti.com> Cc: Lorenzo Pieralisi <lpieralisi@kernel.org> Cc: "Krzysztof Wilczyński" <kw@linux.com> Cc: Bjorn Helgaas <bhelgaas@google.com> Cc: Jonathan Corbet <corbet@lwn.net> Cc: Frank Li <Frank.Li@nxp.com> Cc: linux-pci@vger.kernel.org Cc: linux-next@vger.kernel.org Cc: linux-kernel@vger.kernel.org Signed-off-by: Bagas Sanjaya <bagasdotme@gmail.com> Signed-off-by: Jon Mason <jdmason@kudzu.us>
| * Documentation: PCI: Use code-block block for scratchpad registers diagramBagas Sanjaya2022-08-091-1/+4
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The diagram in "Scratchpad Registers" isn't formatted inside code block, hence triggers indentation warning: Documentation/PCI/endpoint/pci-vntb-function.rst:82: WARNING: Unexpected indentation. Fix the warning by using code-block directive to format the diagram inside code block, as in other diagrams in Documentation/. While at it, unindent the preceeding text. Link: https://lore.kernel.org/linux-next/20220621200235.211b2e32@canb.auug.org.au/ Fixes: 0c4b285d9636cc ("Documentation: PCI: Add specification for the PCI vNTB function device") Reported-by: Stephen Rothwell <sfr@canb.auug.org.au> Cc: Kishon Vijay Abraham I <kishon@ti.com> Cc: Lorenzo Pieralisi <lpieralisi@kernel.org> Cc: "Krzysztof Wilczyński" <kw@linux.com> Cc: Bjorn Helgaas <bhelgaas@google.com> Cc: Jonathan Corbet <corbet@lwn.net> Cc: Frank Li <Frank.Li@nxp.com> Cc: linux-pci@vger.kernel.org Cc: linux-next@vger.kernel.org Cc: linux-kernel@vger.kernel.org Signed-off-by: Bagas Sanjaya <bagasdotme@gmail.com> Signed-off-by: Jon Mason <jdmason@kudzu.us>
| * Documentation: PCI: Add specification for the PCI vNTB function deviceFrank Li2022-08-093-0/+295
| | | | | | | | | | | | | | | | | | Add specification for the PCI vNTB function device. The endpoint function driver and the host PCI driver should be created based on this specification. Signed-off-by: Frank Li <Frank.Li@nxp.com> Signed-off-by: Jon Mason <jdmason@kudzu.us>
* | Merge branch 'pci/resource'Bjorn Helgaas2022-08-041-1/+1
|\ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | - Replace sparc pci_mmap_page_range() wrapper. This still leaves a sparc-specific pci_mmap_resource_range(), but it's only one interface instead of two (Arnd Bergmann) - Remove sparc-specific pci_mmap_resource_range() by implementing pci_iobar_pfn(). This removes the ability to map the entire PCI I/O space using /proc/bus/pci, but we believe that's already been broken since v2.6.28 (Arnd Bergmann) * pci/resource: sparc: Use generic pci_mmap_resource_range() PCI: Remove pci_mmap_page_range() wrapper
| * | PCI: Remove pci_mmap_page_range() wrapperArnd Bergmann2022-07-291-1/+1
| |/ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The ARCH_GENERIC_PCI_MMAP_RESOURCE symbol came up in a recent discussion, and I noticed that this was left behind by an unfinished cleanup from 2017. The only architecture that still relies on providing its own pci_mmap_page_range() helper instead of using the generic pci_mmap_resource_range() is sparc. Presumably the reasons for this have not changed, but at least this can be simplified by converting sparc to use the same interface as the others. The only difference between the two is the device-specific offset that gets added to or subtracted from vma->vm_pgoff. Change the only caller of pci_mmap_page_range() in common code to subtract this offset and call the modern interface, while adding it back in the sparc implementation to preserve the existing behavior. This removes the complexities of the dual interfaces from the common code, and keeps it all specific to the sparc architecture code. According to David Miller, the sparc code lets user space poke into the VGA I/O port registers by mmapping the I/O space of the parent bridge device, which is something that the generic pci_mmap_resource_range() code apparently does not. Link: https://lore.kernel.org/lkml/1519887203.622.3.camel@infradead.org/t/ Link: https://lore.kernel.org/lkml/20220714214657.2402250-3-shorne@gmail.com/ Link: https://lore.kernel.org/r/20220715153617.3393420-1-arnd@kernel.org Signed-off-by: Arnd Bergmann <arnd@arndb.de> Signed-off-by: Bjorn Helgaas <bhelgaas@google.com> Cc: David Woodhouse <dwmw2@infradead.org> Cc: David S. Miller <davem@davemloft.net> Cc: Stafford Horne <shorne@gmail.com>
* / PCI/doc: Convert examples to generic power managementBjorn Helgaas2022-07-111-4/+3
|/ | | | | | | | | PCI-specific power management (pci_driver.suspend and pci_driver.resume) is deprecated. Convert sample code to the generic power management framework. Link: https://lore.kernel.org/r/20220607232946.355987-1-helgaas@kernel.org Signed-off-by: Bjorn Helgaas <bhelgaas@google.com> Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
* PCI/doc: Update obsolete pci_set_dma_mask() referencesAlex Williamson2022-04-211-2/+2
| | | | | | | | | | | The function is dma_set_mask(), fix a missed instance of the old pci_set_dma_mask() and a reference to a function that doesn't exist. Fixes: 05b0ebd06ae6 ("PCI/doc: cleanup references to the legacy PCI DMA API") Link: https://lore.kernel.org/r/165048747271.2959320.13475081883467312497.stgit@omen Signed-off-by: Alex Williamson <alex.williamson@redhat.com> Signed-off-by: Bjorn Helgaas <bhelgaas@google.com> Reviewed-by: Christoph Hellwig <hch@lst.de>
* PCI/doc: cleanup references to the legacy PCI DMA APIChristoph Hellwig2022-03-301-7/+7
| | | | | | | Mention the regular DMA API calls instead of the now removed PCI DMA API. Signed-off-by: Christoph Hellwig <hch@lst.de> Acked-by: Bjorn Helgaas <bhelgaas@google.com>
* Merge tag 'pci-v5.15-changes' of ↵Linus Torvalds2021-09-071-1/+11
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 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 ...
| * Documentation: PCI: endpoint/pci-endpoint-cfs: Guide to use SR-IOVKishon Vijay Abraham I2021-08-191-1/+11
| | | | | | | | | | | | | | | | | | | | | | Add Documentation to help users use PCI endpoint to create virtual functions using configfs. An endpoint function is designated as a virtual endpoint function device when it is linked to a physical endpoint function device (instead of a endpoint controller). Link: https://lore.kernel.org/r/20210819123343.1951-9-kishon@ti.com Signed-off-by: Kishon Vijay Abraham I <kishon@ti.com> Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
* | PCI: Add 'override_only' field to struct pci_device_idMax Gurtovoy2021-08-261-0/+1
|/ | | | | | | | | | | | | | | | | | | | Add 'override_only' field to struct pci_device_id to be used as part of pci_match_device(). When set, a driver only matches the entry when dev->driver_override is set to that driver. In addition, add a helper macro named 'PCI_DEVICE_DRIVER_OVERRIDE' to enable setting some data on it. Next patch from this series will use the above functionality. Signed-off-by: Max Gurtovoy <mgurtovoy@nvidia.com> Signed-off-by: Jason Gunthorpe <jgg@nvidia.com> Acked-by: Bjorn Helgaas <bhelgaas@google.com> Signed-off-by: Yishai Hadas <yishaih@nvidia.com> Link: https://lore.kernel.org/r/20210826103912.128972-10-yishaih@nvidia.com Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
* Merge tag 'pci-v5.14-changes' of ↵Linus Torvalds2021-07-081-1/+1
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci Pull pci updates from Bjorn Helgaas: "Enumeration: - Fix dsm_label_utf16s_to_utf8s() buffer overrun (Krzysztof Wilczyński) - Rely on lengths from scnprintf(), dsm_label_utf16s_to_utf8s() (Krzysztof Wilczyński) - Use sysfs_emit() and sysfs_emit_at() in "show" functions (Krzysztof Wilczyński) - Fix 'resource_alignment' newline issues (Krzysztof Wilczyński) - Add 'devspec' newline (Krzysztof Wilczyński) - Dynamically map ECAM regions (Russell King) Resource management: - Coalesce host bridge contiguous apertures (Kai-Heng Feng) PCIe native device hotplug: - Ignore Link Down/Up caused by DPC (Lukas Wunner) Power management: - Leave Apple Thunderbolt controllers on for s2idle or standby (Konstantin Kharlamov) Virtualization: - Work around Huawei Intelligent NIC VF FLR erratum (Chiqijun) - Clarify error message for unbound IOV devices (Moritz Fischer) - Add pci_reset_bus_function() Secondary Bus Reset interface (Raphael Norwitz) Peer-to-peer DMA: - Simplify distance calculation (Christoph Hellwig) - Finish RCU conversion of pdev->p2pdma (Eric Dumazet) - Rename upstream_bridge_distance() and rework doc (Logan Gunthorpe) - Collect acs list in stack buffer to avoid sleeping (Logan Gunthorpe) - Use correct calc_map_type_and_dist() return type (Logan Gunthorpe) - Warn if host bridge not in whitelist (Logan Gunthorpe) - Refactor pci_p2pdma_map_type() (Logan Gunthorpe) - Avoid pci_get_slot(), which may sleep (Logan Gunthorpe) Altera PCIe controller driver: - Add Joyce Ooi as Altera PCIe maintainer (Joyce Ooi) Broadcom iProc PCIe controller driver: - Fix multi-MSI base vector number allocation (Sandor Bodo-Merle) - Support multi-MSI only on uniprocessor kernel (Sandor Bodo-Merle) Freescale i.MX6 PCIe controller driver: - Limit DBI register length for imx6qp PCIe (Richard Zhu) - Add "vph-supply" for PHY supply voltage (Richard Zhu) - Enable PHY internal regulator when supplied >3V (Richard Zhu) - Remove imx6_pcie_probe() redundant error message (Zhen Lei) Intel Gateway PCIe controller driver: - Fix INTx enable (Martin Blumenstingl) Marvell Aardvark PCIe controller driver: - Fix checking for PIO Non-posted Request (Pali Rohár) - Implement workaround for the readback value of VEND_ID (Pali Rohár) MediaTek PCIe controller driver: - Remove redundant error printing in mtk_pcie_subsys_powerup() (Zhen Lei) MediaTek PCIe Gen3 controller driver: - Add missing MODULE_DEVICE_TABLE (Zou Wei) Microchip PolarFlare PCIe controller driver: - Make struct event_descs static (Krzysztof Wilczyński) Microsoft Hyper-V host bridge driver: - Fix race condition when removing the device (Long Li) - Remove bus device removal unused refcount/functions (Long Li) Mobiveil PCIe controller driver: - Remove unused readl and writel functions (Krzysztof Wilczyński) NVIDIA Tegra PCIe controller driver: - Add missing MODULE_DEVICE_TABLE (Zou Wei) NVIDIA Tegra194 PCIe controller driver: - Fix tegra_pcie_ep_raise_msi_irq() ill-defined shift (Jon Hunter) - Fix host initialization during resume (Vidya Sagar) Rockchip PCIe controller driver: - Register IRQ handlers after device and data are ready (Javier Martinez Canillas)" * tag 'pci-v5.14-changes' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci: (48 commits) PCI/P2PDMA: Finish RCU conversion of pdev->p2pdma PCI: xgene: Annotate __iomem pointer PCI: Fix kernel-doc formatting PCI: cpcihp: Declare cpci_debug in header file MAINTAINERS: Add Joyce Ooi as Altera PCIe maintainer PCI: rockchip: Register IRQ handlers after device and data are ready PCI: tegra194: Fix tegra_pcie_ep_raise_msi_irq() ill-defined shift PCI: aardvark: Implement workaround for the readback value of VEND_ID PCI: aardvark: Fix checking for PIO Non-posted Request PCI: tegra194: Fix host initialization during resume PCI: tegra: Add missing MODULE_DEVICE_TABLE PCI: imx6: Enable PHY internal regulator when supplied >3V dt-bindings: imx6q-pcie: Add "vph-supply" for PHY supply voltage PCI: imx6: Limit DBI register length for imx6qp PCIe PCI: imx6: Remove imx6_pcie_probe() redundant error message PCI: intel-gw: Fix INTx enable PCI: iproc: Support multi-MSI only on uniprocessor kernel PCI: iproc: Fix multi-MSI base vector number allocation PCI: mediatek-gen3: Add missing MODULE_DEVICE_TABLE PCI: Dynamically map ECAM regions ...
| * Documentation: PCI: Fix typo in pci-error-recovery.rstWesley Sheng2021-06-011-1/+1
| | | | | | | | | | | | | | | | | | Replace "It" with "If", since it is a conditional statement. Link: https://lore.kernel.org/r/20210531081215.43507-1-wesley.sheng@amd.com Signed-off-by: Wesley Sheng <wesley.sheng@amd.com> Signed-off-by: Bjorn Helgaas <bhelgaas@google.com> Reviewed-by: Krzysztof Wilczyński <kw@linux.com>
* | docs: PCI: pci.rst: avoid using ReST :doc:`foo` markupMauro Carvalho Chehab2021-06-171-3/+3
| | | | | | | | | | | | | | | | | | | | The :doc:`foo` tag is auto-generated via automarkup.py. So, use the filename at the sources, instead of :doc:`foo`. Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org> Acked-by: Bjorn Helgaas <bhelgaas@google.com> Link: https://lore.kernel.org/r/8697cf945390f6b45fefb4c5fe22ed1c8070e32e.1623824363.git.mchehab+huawei@kernel.org Signed-off-by: Jonathan Corbet <corbet@lwn.net>
generated by cgit v1.2.3 (git 2.25.1) at 2025-04-10 08:49:01 +0000