user/sven/linux.git/include/linux/pci.h, branch v5.4.180

PCI/MSI: Deal with devices lying about their MSI mask capability

2021-11-21T12:38:50Z

commit 2226667a145db2e1f314d7f57fd644fe69863ab9 upstream. It appears that some devices are lying about their mask capability, pretending that they don't have it, while they actually do. The net result is that now that we don't enable MSIs on such endpoint. Add a new per-device flag to deal with this. Further patches will make use of it, sadly. Signed-off-by: Marc Zyngier Signed-off-by: Thomas Gleixner Reviewed-by: Thomas Gleixner Link: https://lore.kernel.org/r/20211104180130.3825416-2-maz@kernel.org Cc: Bjorn Helgaas Signed-off-by: Greg Kroah-Hartman

PCI: Sync __pci_register_driver() stub for CONFIG_PCI=n

2021-09-22T10:26:45Z

[ Upstream commit 817f9916a6e96ae43acdd4e75459ef4f92d96eb1 ] The CONFIG_PCI=y case got a new parameter long time ago. Sync the stub as well. [bhelgaas: add parameter names] Fixes: 725522b5453d ("PCI: add the sysfs driver name to all modules") Link: https://lore.kernel.org/r/20210813153619.89574-1-andriy.shevchenko@linux.intel.com Reported-by: kernel test robot Signed-off-by: Andy Shevchenko Signed-off-by: Bjorn Helgaas Signed-off-by: Sasha Levin

PCI/IOV: Mark VFs as not implementing PCI_COMMAND_MEMORY

2020-10-29T08:57:54Z

[ Upstream commit 12856e7acde4702b7c3238c15fcba86ff6aa507f ] For VFs, the Memory Space Enable bit in the Command Register is hard-wired to 0. Add a new bit to signify devices where the Command Register Memory Space Enable bit does not control the device's response to MMIO accesses. Fixes: abafbc551fdd ("vfio-pci: Invalidate mmaps and block MMIO access on disabled memory") Signed-off-by: Matthew Rosato Acked-by: Bjorn Helgaas Signed-off-by: Alex Williamson Signed-off-by: Sasha Levin

PCI: Use ioremap(), not phys_to_virt() for platform ROM

2020-10-01T11:17:51Z

[ Upstream commit 72e0ef0e5f067fd991f702f0b2635d911d0cf208 ] On some EFI systems, the video BIOS is provided by the EFI firmware. The boot stub code stores the physical address of the ROM image in pdev->rom. Currently we attempt to access this pointer using phys_to_virt(), which doesn't work with CONFIG_HIGHMEM. On these systems, attempting to load the radeon module on a x86_32 kernel can result in the following: BUG: unable to handle page fault for address: 3e8ed03c #PF: supervisor read access in kernel mode #PF: error_code(0x0000) - not-present page *pde = 00000000 Oops: 0000 [#1] PREEMPT SMP CPU: 0 PID: 317 Comm: systemd-udevd Not tainted 5.6.0-rc3-next-20200228 #2 Hardware name: Apple Computer, Inc. MacPro1,1/Mac-F4208DC8, BIOS MP11.88Z.005C.B08.0707021221 07/02/07 EIP: radeon_get_bios+0x5ed/0xe50 [radeon] Code: 00 00 84 c0 0f 85 12 fd ff ff c7 87 64 01 00 00 00 00 00 00 8b 47 08 8b 55 b0 e8 1e 83 e1 d6 85 c0 74 1a 8b 55 c0 85 d2 74 13 <80> 38 55 75 0e 80 78 01 aa 0f 84 a4 03 00 00 8d 74 26 00 68 dc 06 EAX: 3e8ed03c EBX: 00000000 ECX: 3e8ed03c EDX: 00010000 ESI: 00040000 EDI: eec04000 EBP: eef3fc60 ESP: eef3fbe0 DS: 007b ES: 007b FS: 00d8 GS: 00e0 SS: 0068 EFLAGS: 00010206 CR0: 80050033 CR2: 3e8ed03c CR3: 2ec77000 CR4: 000006d0 Call Trace: r520_init+0x26/0x240 [radeon] radeon_device_init+0x533/0xa50 [radeon] radeon_driver_load_kms+0x80/0x220 [radeon] drm_dev_register+0xa7/0x180 [drm] radeon_pci_probe+0x10f/0x1a0 [radeon] pci_device_probe+0xd4/0x140 Fix the issue by updating all drivers which can access a platform provided ROM. Instead of calling the helper function pci_platform_rom() which uses phys_to_virt(), call ioremap() directly on the pdev->rom. radeon_read_platform_bios() previously directly accessed an __iomem pointer. Avoid this by calling memcpy_fromio() instead of kmemdup(). pci_platform_rom() now has no remaining callers, so remove it. Link: https://lore.kernel.org/r/20200319021623.5426-1-mikel@mikelr.com Signed-off-by: Mikel Rychliski Signed-off-by: Bjorn Helgaas Acked-by: Alex Deucher Signed-off-by: Sasha Levin

PCI: Add nr_devfns parameter to pci_add_dma_alias()

2020-02-24T07:36:37Z

[ Upstream commit 09298542cd891b43778db1f65aa3613aa5a562eb ] Add a "nr_devfns" parameter to pci_add_dma_alias() so it can be used to create DMA aliases for a range of devfns. [bhelgaas: incorporate nr_devfns fix from James, update quirk_pex_vca_alias() and setup_aliases()] Signed-off-by: James Sewart Signed-off-by: Bjorn Helgaas Signed-off-by: Sasha Levin

PCI: Fix missing inline for pci_pr3_present()

2020-01-09T09:19:53Z

[ Upstream commit 46b4bff6572b0552b1ee062043621e4b252638d8 ] The inline prefix was missing in the dummy function pci_pr3_present() definition. Fix it. Reported-by: kbuild test robot Fixes: 52525b7a3cf8 ("PCI: Add a helper to check Power Resource Requirements _PR3 existence") Link: https://lore.kernel.org/r/201910212111.qHm6OcWx%lkp@intel.com Signed-off-by: Takashi Iwai Signed-off-by: Sasha Levin

PCI: Add a helper to check Power Resource Requirements _PR3 existence

2020-01-09T09:19:52Z

[ Upstream commit 52525b7a3cf82adec5c6cf0ecbd23ff228badc94 ] A driver may want to know the existence of _PR3, to choose different runtime suspend behavior. A user will be add in next patch. This is mostly the same as nouveau_pr3_present(). Signed-off-by: Kai-Heng Feng Acked-by: Bjorn Helgaas Link: https://lore.kernel.org/r/20191018073848.14590-1-kai.heng.feng@canonical.com Signed-off-by: Takashi Iwai Signed-off-by: Sasha Levin

Merge tag 'pci-v5.4-changes' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci

2019-09-24T02:16:01Z

Pull PCI updates from Bjorn Helgaas: "Enumeration: - Consolidate _HPP/_HPX stuff in pci-acpi.c and simplify it (Krzysztof Wilczynski) - Fix incorrect PCIe device types and remove dev->has_secondary_link to simplify code that deals with upstream/downstream ports (Mika Westerberg) - After suspend, restore Resizable BAR size bits correctly for 1MB BARs (Sumit Saxena) - Enable PCI_MSI_IRQ_DOMAIN support for RISC-V (Wesley Terpstra) Virtualization: - Add ACS quirks for iProc PAXB (Abhinav Ratna), Amazon Annapurna Labs (Ali Saidi) - Move sysfs SR-IOV functions to iov.c (Kelsey Skunberg) - Remove group write permissions from sysfs sriov_numvfs, sriov_drivers_autoprobe (Kelsey Skunberg) Hotplug: - Simplify pciehp indicator control (Denis Efremov) Peer-to-peer DMA: - Allow P2P DMA between root ports for whitelisted bridges (Logan Gunthorpe) - Whitelist some Intel host bridges for P2P DMA (Logan Gunthorpe) - DMA map P2P DMA requests that traverse host bridge (Logan Gunthorpe) Amazon Annapurna Labs host bridge driver: - Add DT binding and controller driver (Jonathan Chocron) Hyper-V host bridge driver: - Fix hv_pci_dev->pci_slot use-after-free (Dexuan Cui) - Fix PCI domain number collisions (Haiyang Zhang) - Use instance ID bytes 4 & 5 as PCI domain numbers (Haiyang Zhang) - Fix build errors on non-SYSFS config (Randy Dunlap) i.MX6 host bridge driver: - Limit DBI register length (Stefan Agner) Intel VMD host bridge driver: - Fix config addressing issues (Jon Derrick) Layerscape host bridge driver: - Add bar_fixed_64bit property to endpoint driver (Xiaowei Bao) - Add CONFIG_PCI_LAYERSCAPE_EP to build EP/RC drivers separately (Xiaowei Bao) Mediatek host bridge driver: - Add MT7629 controller support (Jianjun Wang) Mobiveil host bridge driver: - Fix CPU base address setup (Hou Zhiqiang) - Make "num-lanes" property optional (Hou Zhiqiang) Tegra host bridge driver: - Fix OF node reference leak (Nishka Dasgupta) - Disable MSI for root ports to work around design problem (Vidya Sagar) - Add Tegra194 DT binding and controller support (Vidya Sagar) - Add support for sideband pins and slot regulators (Vidya Sagar) - Add PIPE2UPHY support (Vidya Sagar) Misc: - Remove unused pci_block_cfg_access() et al (Kelsey Skunberg) - Unexport pci_bus_get(), etc (Kelsey Skunberg) - Hide PM, VC, link speed, ATS, ECRC, PTM constants and interfaces in the PCI core (Kelsey Skunberg) - Clean up sysfs DEVICE_ATTR() usage (Kelsey Skunberg) - Mark expected switch fall-through (Gustavo A. R. Silva) - Propagate errors for optional regulators and PHYs (Thierry Reding) - Fix kernel command line resource_alignment parameter issues (Logan Gunthorpe)" * tag 'pci-v5.4-changes' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci: (112 commits) PCI: Add pci_irq_vector() and other stubs when !CONFIG_PCI arm64: tegra: Add PCIe slot supply information in p2972-0000 platform arm64: tegra: Add configuration for PCIe C5 sideband signals PCI: tegra: Add support to enable slot regulators PCI: tegra: Add support to configure sideband pins PCI: vmd: Fix shadow offsets to reflect spec changes PCI: vmd: Fix config addressing when using bus offsets PCI: dwc: Add validation that PCIe core is set to correct mode PCI: dwc: al: Add Amazon Annapurna Labs PCIe controller driver dt-bindings: PCI: Add Amazon's Annapurna Labs PCIe host bridge binding PCI: Add quirk to disable MSI-X support for Amazon's Annapurna Labs Root Port PCI/VPD: Prevent VPD access for Amazon's Annapurna Labs Root Port PCI: Add ACS quirk for Amazon Annapurna Labs root ports PCI: Add Amazon's Annapurna Labs vendor ID MAINTAINERS: Add PCI native host/endpoint controllers designated reviewer PCI: hv: Use bytes 4 and 5 from instance ID as the PCI domain numbers dt-bindings: PCI: tegra: Add PCIe slot supplies regulator entries dt-bindings: PCI: tegra: Add sideband pins configuration entries PCI: tegra: Add Tegra194 PCIe support PCI: Get rid of dev->has_secondary_link flag ...

Merge branch 'pci/trivial'

2019-09-23T21:10:31Z

- Fix typos and whitespace errors (Bjorn Helgaas, Krzysztof Wilczynski) - Remove unnecessary "return" statements (Krzysztof Wilczynski) - Correct of_irq_parse_pci() function documentation (Lubomir Rintel) * pci/trivial: PCI: Remove unnecessary returns PCI: OF: Correct of_irq_parse_pci() documentation PCI: Fix typos and whitespace errors

Merge branch 'pci/resource'

2019-09-23T21:10:15Z

- Convert pci_resource_to_user() to a weak function to remove HAVE_ARCH_PCI_RESOURCE_TO_USER #defines (Denis Efremov) - Use PCI_SRIOV_NUM_BARS for idiomatic loop structure (Denis Efremov) - Fix Resizable BAR size suspend/restore for 1MB BARs (Sumit Saxena) - Correct "pci=resource_alignment" example in documentation (Alexey Kardashevskiy) * pci/resource: PCI: Correct pci=resource_alignment parameter example PCI: Restore Resizable BAR size bits correctly for 1MB BARs PCI: Use PCI_SRIOV_NUM_BARS in loops instead of PCI_IOV_RESOURCE_END PCI: Convert pci_resource_to_user() to a weak function # Conflicts: # drivers/pci/pci.c