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2020-06-13Merge tag 'kbuild-v5.8-2' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild Pull more Kbuild updates from Masahiro Yamada: - fix build rules in binderfs sample - fix build errors when Kbuild recurses to the top Makefile - covert '---help---' in Kconfig to 'help' * tag 'kbuild-v5.8-2' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild: treewide: replace '---help---' in Kconfig files with 'help' kbuild: fix broken builds because of GZIP,BZIP2,LZOP variables samples: binderfs: really compile this sample and fix build issues
2020-06-14treewide: replace '---help---' in Kconfig files with 'help'Masahiro Yamada
Since commit 84af7a6194e4 ("checkpatch: kconfig: prefer 'help' over '---help---'"), the number of '---help---' has been gradually decreasing, but there are still more than 2400 instances. This commit finishes the conversion. While I touched the lines, I also fixed the indentation. There are a variety of indentation styles found. a) 4 spaces + '---help---' b) 7 spaces + '---help---' c) 8 spaces + '---help---' d) 1 space + 1 tab + '---help---' e) 1 tab + '---help---' (correct indentation) f) 1 tab + 1 space + '---help---' g) 1 tab + 2 spaces + '---help---' In order to convert all of them to 1 tab + 'help', I ran the following commend: $ find . -name 'Kconfig*' | xargs sed -i 's/^[[:space:]]*---help---/\thelp/' Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
2020-06-12Merge tag 'for-linus-5.8b-rc1-tag' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/xen/tip Pull xen updates from Juergen Gross: - several smaller cleanups - a fix for a Xen guest regression with CPU offlining - a small fix in the xen pvcalls backend driver - an update of MAINTAINERS * tag 'for-linus-5.8b-rc1-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/xen/tip: MAINTAINERS: Update PARAVIRT_OPS_INTERFACE and VMWARE_HYPERVISOR_INTERFACE xen/pci: Get rid of verbose_request and use dev_dbg() instead xenbus: Use dev_printk() when possible xen-pciback: Use dev_printk() when possible xen: enable BALLOON_MEMORY_HOTPLUG by default xen: expand BALLOON_MEMORY_HOTPLUG description xen/pvcalls: Make pvcalls_back_global static xen/cpuhotplug: Fix initial CPU offlining for PV(H) guests xen-platform: Constify dev_pm_ops xen/pvcalls-back: test for errors when calling backend_connect()
2020-06-08Merge tag 's390-5.8-1' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux Pull s390 updates from Vasily Gorbik: - Add support for multi-function devices in pci code. - Enable PF-VF linking for architectures using the pdev->no_vf_scan flag (currently just s390). - Add reipl from NVMe support. - Get rid of critical section cleanup in entry.S. - Refactor PNSO CHSC (perform network subchannel operation) in cio and qeth. - QDIO interrupts and error handling fixes and improvements, more refactoring changes. - Align ioremap() with generic code. - Accept requests without the prefetch bit set in vfio-ccw. - Enable path handling via two new regions in vfio-ccw. - Other small fixes and improvements all over the code. * tag 's390-5.8-1' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux: (52 commits) vfio-ccw: make vfio_ccw_regops variables declarations static vfio-ccw: Add trace for CRW event vfio-ccw: Wire up the CRW irq and CRW region vfio-ccw: Introduce a new CRW region vfio-ccw: Refactor IRQ handlers vfio-ccw: Introduce a new schib region vfio-ccw: Refactor the unregister of the async regions vfio-ccw: Register a chp_event callback for vfio-ccw vfio-ccw: Introduce new helper functions to free/destroy regions vfio-ccw: document possible errors vfio-ccw: Enable transparent CCW IPL from DASD s390/pci: Log new handle in clp_disable_fh() s390/cio, s390/qeth: cleanup PNSO CHSC s390/qdio: remove q->first_to_kick s390/qdio: fix up qdio_start_irq() kerneldoc s390: remove critical section cleanup from entry.S s390: add machine check SIGP s390/pci: ioremap() align with generic code s390/ap: introduce new ap function ap_get_qdev() Documentation/s390: Update / remove developerWorks web links ...
2020-06-08Merge tag 'iommu-updates-v5.8' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/joro/iommu Pull iommu updates from Joerg Roedel: "A big part of this is a change in how devices get connected to IOMMUs in the core code. It contains the change from the old add_device() / remove_device() to the new probe_device() / release_device() call-backs. As a result functionality that was previously in the IOMMU drivers has been moved to the IOMMU core code, including IOMMU group allocation for each device. The reason for this change was to get more robust allocation of default domains for the iommu groups. A couple of fixes were necessary after this was merged into the IOMMU tree, but there are no known bugs left. The last fix is applied on-top of the merge commit for the topic branches. Other than that change, we have: - Removal of the driver private domain handling in the Intel VT-d driver. This was fragile code and I am glad it is gone now. - More Intel VT-d updates from Lu Baolu: - Nested Shared Virtual Addressing (SVA) support to the Intel VT-d driver - Replacement of the Intel SVM interfaces to the common IOMMU SVA API - SVA Page Request draining support - ARM-SMMU Updates from Will: - Avoid mapping reserved MMIO space on SMMUv3, so that it can be claimed by the PMU driver - Use xarray to manage ASIDs on SMMUv3 - Reword confusing shutdown message - DT compatible string updates - Allow implementations to override the default domain type - A new IOMMU driver for the Allwinner Sun50i platform - Support for ATS gets disabled for untrusted devices (like Thunderbolt devices). This includes a PCI patch, acked by Bjorn. - Some cleanups to the AMD IOMMU driver to make more use of IOMMU core features. - Unification of some printk formats in the Intel and AMD IOMMU drivers and in the IOVA code. - Updates for DT bindings - A number of smaller fixes and cleanups. * tag 'iommu-updates-v5.8' of git://git.kernel.org/pub/scm/linux/kernel/git/joro/iommu: (109 commits) iommu: Check for deferred attach in iommu_group_do_dma_attach() iommu/amd: Remove redundant devid checks iommu/amd: Store dev_data as device iommu private data iommu/amd: Merge private header files iommu/amd: Remove PD_DMA_OPS_MASK iommu/amd: Consolidate domain allocation/freeing iommu/amd: Free page-table in protection_domain_free() iommu/amd: Allocate page-table in protection_domain_init() iommu/amd: Let free_pagetable() not rely on domain->pt_root iommu/amd: Unexport get_dev_data() iommu/vt-d: Fix compile warning iommu/vt-d: Remove real DMA lookup in find_domain iommu/vt-d: Allocate domain info for real DMA sub-devices iommu/vt-d: Only clear real DMA device's context entries iommu: Remove iommu_sva_ops::mm_exit() uacce: Remove mm_exit() op iommu/sun50i: Constify sun50i_iommu_ops iommu/hyper-v: Constify hyperv_ir_domain_ops iommu/vt-d: Use pci_ats_supported() iommu/arm-smmu-v3: Use pci_ats_supported() ...
2020-06-06Merge tag 'pci-v5.8-changes' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci Pull PCI updates from Bjorn Helgaas: "Enumeration: - Program MPS for RCiEP devices (Ashok Raj) - Fix pci_register_host_bridge() device_register() error handling (Rob Herring) - Fix pci_host_bridge struct device release/free handling (Rob Herring) Resource management: - Allow resizing BARs for devices on root bus (Ard Biesheuvel) Power management: - Reduce Thunderbolt resume time by working around devices that don't support DLL Link Active reporting (Mika Westerberg) - Work around a Pericom USB controller OHCI/EHCI PME# defect (Kai-Heng Feng) Virtualization: - Add ACS quirk for Intel Root Complex Integrated Endpoints (Ashok Raj) - Avoid FLR for AMD Starship USB 3.0 (Kevin Buettner) - Avoid FLR for AMD Matisse HD Audio & USB 3.0 (Marcos Scriven) Error handling: - Use only _OSC (not HEST FIRMWARE_FIRST) to determine AER ownership (Alexandru Gagniuc, Kuppuswamy Sathyanarayanan) - Reduce verbosity by logging only ACPI_NOTIFY_DISCONNECT_RECOVER events (Kuppuswamy Sathyanarayanan) - Don't enable AER by default in Kconfig (Bjorn Helgaas) Peer-to-peer DMA: - Add AMD Zen Raven and Renoir Root Ports to whitelist (Alex Deucher) ASPM: - Allow ASPM on links to PCIe-to-PCI/PCI-X Bridges (Kai-Heng Feng) Endpoint framework: - Fix DMA channel release in test (Kunihiko Hayashi) - Add page size as argument to pci_epc_mem_init() (Lad Prabhakar) - Add support to handle multiple base for mapping outbound memory (Lad Prabhakar) Generic host bridge driver: - Support building as module (Rob Herring) - Eliminate pci_host_common_probe wrappers (Rob Herring) Amlogic Meson PCIe controller driver: - Don't use FAST_LINK_MODE to set up link (Marc Zyngier) Broadcom STB PCIe controller driver: - Disable ASPM L0s if 'aspm-no-l0s' in DT (Jim Quinlan) - Fix clk_put() error (Jim Quinlan) - Fix window register offset (Jim Quinlan) - Assert fundamental reset on initialization (Nicolas Saenz Julienne) - Add notify xHCI reset property (Nicolas Saenz Julienne) - Add init routine for Raspberry Pi 4 VL805 USB controller (Nicolas Saenz Julienne) - Sync with Raspberry Pi 4 firmware for VL805 initialization (Nicolas Saenz Julienne) Cadence PCIe controller driver: - Remove "cdns,max-outbound-regions" DT property (replaced by "ranges") (Kishon Vijay Abraham I) - Read 32-bit (not 16-bit) Vendor ID/Device ID property from DT (Kishon Vijay Abraham I) Marvell Aardvark PCIe controller driver: - Improve link training (Marek Behún) - Add PHY support (Marek Behún) - Add "phys", "max-link-speed", "reset-gpios" to dt-binding (Marek Behún) - Train link immediately after enabling training to work around detection issues with some cards (Pali Rohár) - Issue PERST via GPIO to work around detection issues (Pali Rohár) - Don't blindly enable ASPM L0s (Pali Rohár) - Replace custom macros by standard linux/pci_regs.h macros (Pali Rohár) Microsoft Hyper-V host bridge driver: - Fix probe failure path to release resource (Wei Hu) - Retry PCI bus D0 entry on invalid device state for kdump (Wei Hu) Renesas R-Car PCIe controller driver: - Fix incorrect programming of OB windows (Andrew Murray) - Add suspend/resume (Kazufumi Ikeda) - Rename pcie-rcar.c to pcie-rcar-host.c (Lad Prabhakar) - Add endpoint controller driver (Lad Prabhakar) - Fix PCIEPAMR mask calculation (Lad Prabhakar) - Add r8a77961 to DT binding (Yoshihiro Shimoda) Socionext UniPhier Pro5 controller driver: - Add endpoint controller driver (Kunihiko Hayashi) Synopsys DesignWare PCIe controller driver: - Program outbound ATU upper limit register (Alan Mikhak) - Fix inner MSI IRQ domain registration (Marc Zyngier) Miscellaneous: - Check for platform_get_irq() failure consistently (negative return means failure) (Aman Sharma) - Fix several runtime PM get/put imbalances (Dinghao Liu) - Use flexible-array and struct_size() helpers for code cleanup (Gustavo A. R. Silva) - Update & fix issues in bridge emulation of PCIe registers (Jon Derrick) - Add macros for bridge window names (PCI_BRIDGE_IO_WINDOW, etc) (Krzysztof Wilczyński) - Work around Intel PCH MROMs that have invalid BARs (Xiaochun Lee)" * tag 'pci-v5.8-changes' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci: (100 commits) PCI: uniphier: Add Socionext UniPhier Pro5 PCIe endpoint controller driver PCI: Add ACS quirk for Intel Root Complex Integrated Endpoints PCI/DPC: Print IRQ number used by port PCI/AER: Use "aer" variable for capability offset PCI/AER: Remove redundant dev->aer_cap checks PCI/AER: Remove redundant pci_is_pcie() checks PCI/AER: Remove HEST/FIRMWARE_FIRST parsing for AER ownership PCI: tegra: Fix runtime PM imbalance on error PCI: vmd: Filter resource type bits from shadow register PCI: tegra194: Fix runtime PM imbalance on error dt-bindings: PCI: Add UniPhier PCIe endpoint controller description PCI: hv: Use struct_size() helper PCI: Rename _DSM constants to align with spec PCI: Avoid FLR for AMD Starship USB 3.0 PCI: Avoid FLR for AMD Matisse HD Audio & USB 3.0 x86/PCI: Drop unused xen_register_pirq() gsi_override parameter PCI: dwc: Use private data pointer of "struct irq_domain" to get pcie_port PCI: amlogic: meson: Don't use FAST_LINK_MODE to set up link PCI: dwc: Fix inner MSI IRQ domain registration PCI: dwc: pci-dra7xx: Use devm_platform_ioremap_resource_byname() ...
2020-06-04Merge branch 'remotes/lorenzo/pci/vmd'Bjorn Helgaas
- Fix vmd resource address calculation using Host Physical Address shadow register (Jon Derrick) * remotes/lorenzo/pci/vmd: PCI: vmd: Filter resource type bits from shadow register
2020-06-04Merge branch 'remotes/lorenzo/pci/v3-semi'Bjorn Helgaas
- Fix memory leak in probe error paths (Christophe JAILLET) * remotes/lorenzo/pci/v3-semi: PCI: v3-semi: Fix a memory leak in v3_pci_probe() error handling paths
2020-06-04Merge branch 'remotes/lorenzo/pci/tegra'Bjorn Helgaas
- Fix error message for failure to get reset GPIO from DT (Pali Rohár) - Fix runtime PM imbalance on error path (both tegra and tegra194) (Dinghao Liu) * remotes/lorenzo/pci/tegra: PCI: tegra: Fix runtime PM imbalance on error PCI: tegra194: Fix runtime PM imbalance on error PCI: tegra: Fix reporting GPIO error value
2020-06-04Merge branch 'remotes/lorenzo/pci/rcar'Bjorn Helgaas
- Fix rcar OB window programming (Andrew Murray) - Add rcar suspend/resume support (Kazufumi Ikeda) - Add r8a77961 to DT binding (Yoshihiro Shimoda) - Rename pcie-rcar.c to pcie-rcar-host.c to make room for endpoint mode (Lad Prabhakar) - Move shareable code to pcie-rcar.c (Lad Prabhakar) - Correct PCIEPAMR mask calculation for "size < 128" (Lad Prabhakar) - Add endpoint support for multiple outbound memory windows (Lad Prabhakar) - Add R-Car PCIe endpoint driver and DT bindings (Lad Prabhakar) * remotes/lorenzo/pci/rcar: MAINTAINERS: Add file patterns for rcar PCI device tree bindings PCI: rcar: Add endpoint mode support dt-bindings: PCI: rcar: Add bindings for R-Car PCIe endpoint controller PCI: endpoint: Add support to handle multiple base for mapping outbound memory PCI: endpoint: Pass page size as argument to pci_epc_mem_init() PCI: rcar: Fix calculating mask for PCIEPAMR register PCI: rcar: Move shareable code to a common file PCI: rcar: Rename pcie-rcar.c to pcie-rcar-host.c dt-bindings: pci: rcar: add r8a77961 support PCI: rcar: Add suspend/resume PCI: rcar: Fix incorrect programming of OB windows
2020-06-04Merge branch 'remotes/lorenzo/pci/pci-bridge-emul'Bjorn Helgaas
- Fix conflicts in pci-bridge-emul descriptions of Device Status and Slot Control (Jon Derrick) - Add emulation for more Device Status, Link Control, and Slot Control bits (Jon Derrick) - Improve emulation of reserved bits (Jon Derrick) * remotes/lorenzo/pci/pci-bridge-emul: PCI: pci-bridge-emul: Eliminate the 'reserved' member PCI: pci-bridge-emul: Update for PCIe 5.0 r1.0 PCI: pci-bridge-emul: Fix Root Cap/Status comment PCI: pci-bridge-emul: Fix PCIe bit conflicts
2020-06-04Merge branch 'remotes/lorenzo/pci/hv'Bjorn Helgaas
- Release resource in probe failure path (Wei Hu) - Retry PCI bus D0 entry if device state is invalid (Wei Hu) - Use struct_size() to help avoid type mistakes (Gustavo A. R. Silva) * remotes/lorenzo/pci/hv: PCI: hv: Use struct_size() helper PCI: hv: Retry PCI bus D0 entry on invalid device state PCI: hv: Fix the PCI HyperV probe failure path to release resource properly
2020-06-04Merge branch 'remotes/lorenzo/pci/host-generic'Bjorn Helgaas
- Constify struct pci_ecam_ops (Rob Herring) - Support building as modules (Rob Herring) - Eliminate wrappers for pci_host_common_probe() by using DT match table data (Rob Herring) * remotes/lorenzo/pci/host-generic: PCI: host-generic: Eliminate pci_host_common_probe wrappers PCI: host-generic: Support building as modules PCI: Constify struct pci_ecam_ops # Conflicts: # drivers/pci/controller/dwc/pcie-hisi.c
2020-06-04Merge branch 'remotes/lorenzo/pci/endpoint'Bjorn Helgaas
- Avoid NULL pointer dereference in dma_release_channel() (Kunihiko Hayashi) * remotes/lorenzo/pci/endpoint: PCI: endpoint: functions/pci-epf-test: Fix DMA channel release
2020-06-04Merge branch 'remotes/lorenzo/pci/dwc'Bjorn Helgaas
- Simplify computation of msix_tbl (Jiri Slaby) - Make hisi_pcie_platform_ops static (Zou Wei) - Warn about resources above 4G (Alan Mikhak) - Make intel_pcie_cpu_addr() static (Jason Yan) - Use devm_platform_ioremap_resource_byname() to simplify code and improve error checking (Wei Yongjun) - Fix inner MSI IRQ domain registration so it doesn't confuse debugfs (Marc Zyngier) - Don't use FAST_LINK_MODE on meson (Marc Zyngier) - Add Socionext UniPhier Pro5 PCIe endpoint controller driver and DT description (Kunihiko Hayashi) * remotes/lorenzo/pci/dwc: PCI: uniphier: Add Socionext UniPhier Pro5 PCIe endpoint controller driver dt-bindings: PCI: Add UniPhier PCIe endpoint controller description PCI: dwc: Use private data pointer of "struct irq_domain" to get pcie_port PCI: amlogic: meson: Don't use FAST_LINK_MODE to set up link PCI: dwc: Fix inner MSI IRQ domain registration PCI: dwc: pci-dra7xx: Use devm_platform_ioremap_resource_byname() PCI: dwc: intel: Make intel_pcie_cpu_addr() static PCI: dwc: Program outbound ATU upper limit register PCI: dwc: Make hisi_pcie_platform_ops static PCI: dwc: Clean up computing of msix_tbl
2020-06-04Merge branch 'remotes/lorenzo/pci/cadence'Bjorn Helgaas
- Deprecate 'cdns,max-outbound-regions' and 'cdns,no-bar-match-nbits' bindings in favor of deriving them from 'ranges' and 'dma-ranges' (Kishon Vijay Abraham I) - Read Vendor and Device ID as 32 bits (not 16) from DT (Kishon Vijay Abraham I) * remotes/lorenzo/pci/cadence: PCI: cadence: Fix to read 32-bit Vendor ID/Device ID property from DT PCI: cadence: Remove "cdns,max-outbound-regions" DT property dt-bindings: PCI: cadence: Deprecate inbound/outbound specific bindings
2020-06-04Merge branch 'remotes/lorenzo/pci/brcmstb'Bjorn Helgaas
- Assert fundamental reset on initialization (Nicolas Saenz Julienne) - Remove unnecessary clk_put(); devm_clk_get() handles this automatically (Jim Quinlan) - Fix outbound memory window register stride offset (Jim Quinlan) - Add "aspm-no-l0s" property for brcmstb and disable ASPM L0s when present (Jim Quinlan) - Add property to notify Raspberry Pi firmware of xHCI reset (Nicolas Saenz Julienne) - Add Raspberry Pi VL805 xHCI init function to trigger VL805 firmware load (Nicolas Saenz Julienne) - Wait in brcmstb probe for Raspberry Pi VL805 firmware initialization (Nicolas Saenz Julienne) - Load Raspberry Pi VL805 firmware in USB early handoff quirk (Nicolas Saenz Julienne) * remotes/lorenzo/pci/brcmstb: USB: pci-quirks: Add Raspberry Pi 4 quirk PCI: brcmstb: Wait for Raspberry Pi's firmware when present firmware: raspberrypi: Introduce vl805 init routine soc: bcm2835: Add notify xHCI reset property PCI: brcmstb: Disable L0s component of ASPM if requested dt-bindings: PCI: brcmstb: New prop 'aspm-no-l0s' PCI: brcmstb: Fix window register offset from 4 to 8 PCI: brcmstb: Don't clk_put() a managed clock PCI: brcmstb: Assert fundamental reset on initialization
2020-06-04Merge branch 'remotes/lorenzo/pci/altera'Bjorn Helgaas
- Fix altera whitespace (Colin Ian King) * remotes/lorenzo/pci/altera: PCI: altera: Clean up indentation issue on a return statement
2020-06-04Merge branch 'remotes/lorenzo/pci/aardvark'Bjorn Helgaas
- Train link immediately after enabling link training to avoid issues with Compex WLE900VX and Turris MOX devices (Pali Rohár) - Remove ASPM config and let the PCI core do it (Pali Rohár) - Interpret zero 'max-link-speed' value as invalid (Pali Rohár) - Respect the 'max-link-speed' property and improve link training (Marek Behún) - Issue PERST via GPIO (Pali Rohár) - Add PHY support (Marek Behún) - Use standard PCIe capability macros (Pali Rohár) - Document new 'max-link-speed', 'phys', and 'reset-gpios' properties (Marek Behún) * remotes/lorenzo/pci/aardvark: dt-bindings: PCI: aardvark: Describe new properties PCI: aardvark: Replace custom macros by standard linux/pci_regs.h macros PCI: aardvark: Add PHY support PCI: aardvark: Add FIXME comment for PCIE_CORE_CMD_STATUS_REG access PCI: aardvark: Issue PERST via GPIO PCI: aardvark: Improve link training PCI: of: Zero max-link-speed value is invalid PCI: aardvark: Don't blindly enable ASPM L0s and don't write to read-only register PCI: aardvark: Train link immediately after enabling training
2020-06-04Merge branch 'pci/virtualization'Bjorn Helgaas
- Remove unused xen_register_pirq() parameter (Wei Liu) - Quirk AMD Matisse HD Audio & USB 3.0 devices where FLR hangs the device (Marcos Scriven) - Quirk AMD Starship USB 3.0 device where FLR doesn't seem to work (Kevin Buettner) - Add ACS quirk for Intel RCiEPs (Ashok Raj) * pci/virtualization: PCI: Add ACS quirk for Intel Root Complex Integrated Endpoints PCI: Avoid FLR for AMD Starship USB 3.0 PCI: Avoid FLR for AMD Matisse HD Audio & USB 3.0 x86/PCI: Drop unused xen_register_pirq() gsi_override parameter
2020-06-04Merge branch 'pci/switchtec'Bjorn Helgaas
- Fix a minor bool type issue (Krzysztof Wilczynski) * pci/switchtec: PCI/switchtec: Correct bool variable type assignment
2020-06-04Merge branch 'pci/resource'Bjorn Helgaas
- Allow resizing BARs of devices on root bus (Ard Biesheuvel) * pci/resource: PCI: Allow pci_resize_resource() for devices on root bus
2020-06-04Merge branch 'pci/pm'Bjorn Helgaas
- Check .bridge_d3() hook for NULL before calling it (Bjorn Helgaas) - Disable PME# for Pericom OHCI/UHCI USB controllers because it's not reliably asserted on USB hotplug (Kai-Heng Feng) - Assume ports without DLL Link Active train links in 100 ms to work around Thunderbolt bridge defects (Mika Westerberg) * pci/pm: PCI/PM: Assume ports without DLL Link Active train links in 100 ms PCI/PM: Adjust pcie_wait_for_link_delay() for caller delay PCI: Avoid Pericom USB controller OHCI/EHCI PME# defect serial: 8250_pci: Move Pericom IDs to pci_ids.h PCI/PM: Call .bridge_d3() hook only if non-NULL
2020-06-04Merge branch 'pci/p2pdma'Bjorn Helgaas
- Add AMD Zen Raven and Renoir Root Ports to P2PDMA whitelist (Alex Deucher) * pci/p2pdma: PCI/P2PDMA: Add AMD Zen Raven and Renoir Root Ports to whitelist
2020-06-04Merge branch 'pci/misc'Bjorn Helgaas
- Clarify that platform_get_irq() should never return 0 (Bjorn Helgaas) - Check for platform_get_irq() failure consistently (Bjorn Helgaas) - Replace zero-length array with flexible-array (Gustavo A. R. Silva) - Unify pcie_find_root_port() and pci_find_pcie_root_port() (Yicong Yang) - Quirk Intel C620 MROMs, which have non-BARs in BAR locations (Xiaochun Lee) - Fix pcie_pme_resume() and pcie_pme_remove() kernel-doc (Jay Fang) - Rename _DSM constants to align with spec (Krzysztof Wilczyński) * pci/misc: PCI: Rename _DSM constants to align with spec PCI/PME: Fix kernel-doc of pcie_pme_resume() and pcie_pme_remove() x86/PCI: Mark Intel C620 MROMs as having non-compliant BARs PCI: Unify pcie_find_root_port() and pci_find_pcie_root_port() PCI: Replace zero-length array with flexible-array PCI: Check for platform_get_irq() failure consistently driver core: platform: Clarify that IRQ 0 is invalid
2020-06-04Merge branch 'pci/kconfig'Bjorn Helgaas
- Remove unnecessary "default y" Kconfig options (Bjorn Helgaas) * pci/kconfig: PCI/AER: Don't select CONFIG_PCIEAER by default PCI: keystone: Don't select CONFIG_PCI_KEYSTONE_HOST by default PCI: dra7xx: Don't select CONFIG_PCI_DRA7XX_HOST by default
2020-06-04Merge branch 'pci/hotplug'Bjorn Helgaas
- Remove unused pciehp EMI() and HP_SUPR_RM() macros (Ani Sinha) - Use of_node_name_eq() for node name comparisons (Rob Herring) - Convert shpchp_unconfigure_device() to void (Krzysztof Wilczynski) * pci/hotplug: PCI: shpchp: Make shpchp_unconfigure_device() void PCI: Use of_node_name_eq() for node name comparisons PCI: pciehp: Remove unused EMI() and HP_SUPR_RM() macros
2020-06-04Merge branch 'pci/error'Bjorn Helgaas
- Log only ACPI_NOTIFY_DISCONNECT_RECOVER events for EDR, not all ACPI SYSTEM-level events (Kuppuswamy Sathyanarayanan) - Rely only on _OSC (not _OSC + HEST FIRMWARE_FIRST) to negotiate AER Capability ownership (Alexandru Gagniuc) - Remove HEST/FIRMWARE_FIRST parsing that was previously used to help intuit AER Capability ownership (Kuppuswamy Sathyanarayanan) - Remove redundant pci_is_pcie() and dev->aer_cap checks (Kuppuswamy Sathyanarayanan) - Print IRQ number used by DPC (Yicong Yang) * pci/error: PCI/DPC: Print IRQ number used by port PCI/AER: Use "aer" variable for capability offset PCI/AER: Remove redundant dev->aer_cap checks PCI/AER: Remove redundant pci_is_pcie() checks PCI/AER: Remove HEST/FIRMWARE_FIRST parsing for AER ownership PCI/AER: Use only _OSC to determine AER ownership PCI/EDR: Log only ACPI_NOTIFY_DISCONNECT_RECOVER events
2020-06-04Merge branch 'pci/enumeration'Bjorn Helgaas
- Fix pci_register_host_bridge() device_register() error handling (Rob Herring) - Fix pci_host_bridge struct device release/free handling (Rob Herring) - Program MPS for RCiEP devices (Ashok Raj) - Inherit PTM settings from Switch Upstream Port so we can enable PTM on Endpoints (Bjorn Helgaas) - Add #defines for bridge windows (PCI_BRIDGE_IO_WINDOW, PCI_BRIDGE_MEM_WINDOW, etc) (Krzysztof Wilczynski) * pci/enumeration: pcmcia: Use CardBus window names (PCI_CB_BRIDGE_IO_0_WINDOW etc) when freeing PCI: Use bridge window names (PCI_BRIDGE_IO_WINDOW etc) PCI/PTM: Inherit Switch Downstream Port PTM settings from Upstream Port PCI: Program MPS for RCiEP devices PCI: Fix pci_host_bridge struct device release/free handling PCI: Fix pci_register_host_bridge() device_register() error handling
2020-06-04PCI: uniphier: Add Socionext UniPhier Pro5 PCIe endpoint controller driverKunihiko Hayashi
Add driver for the Socionext UniPhier Pro5 SoC endpoint controller. This controller is based on the DesignWare PCIe core. And add "host" to existing controller descriontions for the host controller in Kconfig. Link: https://lore.kernel.org/r/1589457801-12796-3-git-send-email-hayashi.kunihiko@socionext.com Signed-off-by: Kunihiko Hayashi <hayashi.kunihiko@socionext.com> Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com> Reviewed-by: Rob Herring <robh@kernel.org>
2020-06-03Merge tag 'hyperv-next-signed' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/hyperv/linux Pull hyper-v updates from Wei Liu: - a series from Andrea to support channel reassignment - a series from Vitaly to clean up Vmbus message handling - a series from Michael to clean up and augment hyperv-tlfs.h - patches from Andy to clean up GUID usage in Hyper-V code - a few other misc patches * tag 'hyperv-next-signed' of git://git.kernel.org/pub/scm/linux/kernel/git/hyperv/linux: (29 commits) Drivers: hv: vmbus: Resolve more races involving init_vp_index() Drivers: hv: vmbus: Resolve race between init_vp_index() and CPU hotplug vmbus: Replace zero-length array with flexible-array Driver: hv: vmbus: drop a no long applicable comment hyper-v: Switch to use UUID types directly hyper-v: Replace open-coded variant of %*phN specifier hyper-v: Supply GUID pointer to printf() like functions hyper-v: Use UUID API for exporting the GUID (part 2) asm-generic/hyperv: Add definitions for Get/SetVpRegister hypercalls x86/hyperv: Split hyperv-tlfs.h into arch dependent and independent files x86/hyperv: Remove HV_PROCESSOR_POWER_STATE #defines KVM: x86: hyperv: Remove duplicate definitions of Reference TSC Page drivers: hv: remove redundant assignment to pointer primary_channel scsi: storvsc: Re-init stor_chns when a channel interrupt is re-assigned Drivers: hv: vmbus: Introduce the CHANNELMSG_MODIFYCHANNEL message type Drivers: hv: vmbus: Synchronize init_vp_index() vs. CPU hotplug Drivers: hv: vmbus: Remove the unused HV_LOCALIZED channel affinity logic PCI: hv: Prepare hv_compose_msi_msg() for the VMBus-channel-interrupt-to-vCPU reassignment functionality Drivers: hv: vmbus: Use a spin lock for synchronizing channel scheduling vs. channel removal hv_utils: Always execute the fcopy and vss callbacks in a tasklet ...
2020-06-03Merge tag 'mips_5.8' of git://git.kernel.org/pub/scm/linux/kernel/git/mips/linuxLinus Torvalds
Pull MIPS updates from Thomas Bogendoerfer: - added support for MIPSr5 and P5600 cores - converted Loongson PCI driver into a PCI host driver using the generic PCI framework - added emulation of CPUCFG command for Loogonson64 cpus - removed of LASAT, PMC MSP71xx and NEC MARKEINS/EMMA - ioremap cleanup - fix for a race between two threads faulting the same page - various cleanups and fixes * tag 'mips_5.8' of git://git.kernel.org/pub/scm/linux/kernel/git/mips/linux: (143 commits) MIPS: ralink: drop ralink_clk_init for mt7621 MIPS: ralink: bootrom: mark a function as __init to save some memory MIPS: Loongson64: Reorder CPUCFG model match arms MIPS: Expose Loongson CPUCFG availability via HWCAP MIPS: Loongson64: Guard against future cores without CPUCFG MIPS: Fix build warning about "PTR_STR" redefinition MIPS: Loongson64: Remove not used pci.c MIPS: Loongson64: Define PCI_IOBASE MIPS: CPU_LOONGSON2EF need software to maintain cache consistency MIPS: DTS: Fix build errors used with various configs MIPS: Loongson64: select NO_EXCEPT_FILL MIPS: Fix IRQ tracing when call handle_fpe() and handle_msa_fpe() MIPS: mm: add page valid judgement in function pte_modify mm/memory.c: Add memory read privilege on page fault handling mm/memory.c: Update local TLB if PTE entry exists MIPS: Do not flush tlb page when updating PTE entry MIPS: ingenic: Default to a generic board MIPS: ingenic: Add support for GCW Zero prototype MIPS: ingenic: DTS: Add memory info of GCW Zero MIPS: Loongson64: Switch to generic PCI driver ...
2020-06-02Merge tag 'acpi-5.8-rc1' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm Pull ACPI updates from Rafael Wysocki: "These update the ACPICA code in the kernel to upstream revision 20200430, fix several reference counting errors related to ACPI tables, add _Exx / _Lxx support to the GED driver, add a new acpi_evaluate_reg() helper, add new DPTF battery participant driver and extend the DPFT power participant driver, improve the handling of memory failures in the APEI code, add a blacklist entry to the backlight driver, update the PMIC driver and the processor idle driver, fix two kobject reference count leaks, and make a few janitory changes. Specifics: - Update the ACPICA code in the kernel to upstream revision 20200430: - Move acpi_gbl_next_cmd_num definition (Erik Kaneda). - Ignore AE_ALREADY_EXISTS status in the disassembler when parsing create operators (Erik Kaneda). - Add status checks to the dispatcher (Erik Kaneda). - Fix required parameters for _NIG and _NIH (Erik Kaneda). - Make acpi_protocol_lengths static (Yue Haibing). - Fix ACPI table reference counting errors in several places, mostly in error code paths (Hanjun Guo). - Extend the Generic Event Device (GED) driver to support _Exx and _Lxx handler methods (Ard Biesheuvel). - Add new acpi_evaluate_reg() helper and modify the ACPI PCI hotplug code to use it (Hans de Goede). - Add new DPTF battery participant driver and make the DPFT power participant driver create more sysfs device attributes (Srinivas Pandruvada). - Improve the handling of memory failures in APEI (James Morse). - Add new blacklist entry for Acer TravelMate 5735Z to the backlight driver (Paul Menzel). - Add i2c address for thermal control to the PMIC driver (Mauro Carvalho Chehab). - Allow the ACPI processor idle driver to work on platforms with only one ACPI C-state present (Zhang Rui). - Fix kobject reference count leaks in error code paths in two places (Qiushi Wu). - Delete unused proc filename macros and make some symbols static (Pascal Terjan, Zheng Zengkai, Zou Wei)" * tag 'acpi-5.8-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm: (32 commits) ACPI: CPPC: Fix reference count leak in acpi_cppc_processor_probe() ACPI: sysfs: Fix reference count leak in acpi_sysfs_add_hotplug_profile() ACPI: GED: use correct trigger type field in _Exx / _Lxx handling ACPI: DPTF: Add battery participant driver ACPI: DPTF: Additional sysfs attributes for power participant driver ACPI: video: Use native backlight on Acer TravelMate 5735Z arm64: acpi: Make apei_claim_sea() synchronise with APEI's irq work ACPI: APEI: Kick the memory_failure() queue for synchronous errors mm/memory-failure: Add memory_failure_queue_kick() ACPI / PMIC: Add i2c address for thermal control ACPI: GED: add support for _Exx / _Lxx handler methods ACPI: Delete unused proc filename macros ACPI: hotplug: PCI: Use the new acpi_evaluate_reg() helper ACPI: utils: Add acpi_evaluate_reg() helper ACPI: debug: Make two functions static ACPI: sleep: Put the FACS table after using it ACPI: scan: Put SPCR and STAO table after using it ACPI: EC: Put the ACPI table after using it ACPI: APEI: Put the HEST table for error path ACPI: APEI: Put the error record serialization table for error path ...
2020-06-02PCI: Add ACS quirk for Intel Root Complex Integrated EndpointsAshok Raj
All Intel platforms guarantee that all root complex implementations must send transactions up to IOMMU for address translations. Hence for Intel RCiEP devices, we can assume some ACS-type isolation even without an ACS capability. From the Intel VT-d spec, r3.1, sec 3.16 ("Root-Complex Peer to Peer Considerations"): When DMA remapping is enabled, peer-to-peer requests through the Root-Complex must be handled as follows: - The input address in the request is translated (through first-level, second-level or nested translation) to a host physical address (HPA). The address decoding for peer addresses must be done only on the translated HPA. Hardware implementations are free to further limit peer-to-peer accesses to specific host physical address regions (or to completely disallow peer-forwarding of translated requests). - Since address translation changes the contents (address field) of the PCI Express Transaction Layer Packet (TLP), for PCI Express peer-to-peer requests with ECRC, the Root-Complex hardware must use the new ECRC (re-computed with the translated address) if it decides to forward the TLP as a peer request. - Root-ports, and multi-function root-complex integrated endpoints, may support additional peer-to-peer control features by supporting PCI Express Access Control Services (ACS) capability. Refer to ACS capability in PCI Express specifications for details. Since Linux didn't give special treatment to allow this exception, certain RCiEP MFD devices were grouped in a single IOMMU group. This doesn't permit a single device to be assigned to a guest for instance. In one vendor system: Device 14.x were grouped in a single IOMMU group. /sys/kernel/iommu_groups/5/devices/0000:00:14.0 /sys/kernel/iommu_groups/5/devices/0000:00:14.2 /sys/kernel/iommu_groups/5/devices/0000:00:14.3 After this patch: /sys/kernel/iommu_groups/5/devices/0000:00:14.0 /sys/kernel/iommu_groups/5/devices/0000:00:14.2 /sys/kernel/iommu_groups/6/devices/0000:00:14.3 <<< new group 14.0 and 14.2 are integrated devices, but legacy end points, whereas 14.3 was a PCIe-compliant RCiEP. 00:14.3 Network controller: Intel Corporation Device 9df0 (rev 30) Capabilities: [40] Express (v2) Root Complex Integrated Endpoint, MSI 00 This permits assigning this device to a guest VM. [bhelgaas: drop "Fixes" tag since this doesn't fix a bug in that commit] Link: https://lore.kernel.org/r/1590699462-7131-1-git-send-email-ashok.raj@intel.com Tested-by: Darrel Goeddel <dgoeddel@forcepoint.com> Signed-off-by: Ashok Raj <ashok.raj@intel.com> Signed-off-by: Bjorn Helgaas <bhelgaas@google.com> Reviewed-by: Alex Williamson <alex.williamson@redhat.com> Cc: stable@vger.kernel.org Cc: Lu Baolu <baolu.lu@linux.intel.com> Cc: Mark Scott <mscott@forcepoint.com>, Cc: Romil Sharma <rsharma@forcepoint.com>
2020-06-01PCI/DPC: Print IRQ number used by portYicong Yang
Print IRQ number used by DPC port, like AER/PME does. It provides convenience to track DPC interrupts counts of certain port from /proc/interrupts. Link: https://lore.kernel.org/r/1589018214-52752-1-git-send-email-yangyicong@hisilicon.com Signed-off-by: Yicong Yang <yangyicong@hisilicon.com> Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
2020-06-01PCI/AER: Use "aer" variable for capability offsetBjorn Helgaas
Previously we used "pos" or "aer_pos" for the offset of the AER Capability. Use "aer" consistently and initialize it the same way everywhere. No functional change intended. Link: https://lore.kernel.org/r/20200529230915.GA479883@bjorn-Precision-5520 Signed-off-by: Bjorn Helgaas <bhelgaas@google.com> Reviewed-by: Kuppuswamy Sathyanarayanan <sathyanarayanan.kuppuswamy@linux.intel.com>
2020-06-01PCI/AER: Remove redundant dev->aer_cap checksKuppuswamy Sathyanarayanan
pcie_aer_get_firmware_first() checks dev->aer_cap, so we can remove redundant dev->aer_cap checks in the callers. Link: https://lore.kernel.org/r/d5ccc7a060ec9cdc234bdae7df8a0a4410f13f42.1590534843.git.sathyanarayanan.kuppuswamy@linux.intel.com Signed-off-by: Kuppuswamy Sathyanarayanan <sathyanarayanan.kuppuswamy@linux.intel.com> Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
2020-06-01PCI/AER: Remove redundant pci_is_pcie() checksKuppuswamy Sathyanarayanan
AER is a PCIe Extended Capability, so dev->aer_cap will only be set for PCIe devices. Remove redundant pci_is_pcie() checks. Link: https://lore.kernel.org/r/361c622eabe5b845b8092e0bec04a3a2c262cb38.1590534843.git.sathyanarayanan.kuppuswamy@linux.intel.com Signed-off-by: Kuppuswamy Sathyanarayanan <sathyanarayanan.kuppuswamy@linux.intel.com> Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
2020-06-01PCI/AER: Remove HEST/FIRMWARE_FIRST parsing for AER ownershipKuppuswamy Sathyanarayanan
Commit c100beb9ccfb ("PCI/AER: Use only _OSC to determine AER ownership") removed the use of HEST in determining AER ownership, but the AER driver still used HEST to verify AER ownership in some of its APIs. Per the ACPI spec v6.3, sec 18.3.2.4, some HEST table entries contain a FIRMWARE_FIRST bit, but that bit does not tell us anything about ownership of the AER capability. Remove parsing of HEST to look for FIRMWARE_FIRST. Add pcie_aer_is_native() for the places that need to know whether the OS owns the AER capability. [bhelgaas: commit log, reorder patch, remove unused __aer_firmware_first] Link: https://lore.kernel.org/r/9a37f53a4e6ff4942ff8e18dbb20b00e16c47341.1590534843.git.sathyanarayanan.kuppuswamy@linux.intel.com Signed-off-by: Kuppuswamy Sathyanarayanan <sathyanarayanan.kuppuswamy@linux.intel.com> Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
2020-06-01PCI: tegra: Fix runtime PM imbalance on errorDinghao Liu
pm_runtime_get_sync() increments the runtime PM usage counter even when it returns an error code. Thus a pairing decrement is needed on the error handling path to keep the counter balanced. Also, call pm_runtime_disable() when pm_runtime_get_sync() returns an error code. Link: https://lore.kernel.org/r/20200521024709.2368-1-dinghao.liu@zju.edu.cn Signed-off-by: Dinghao Liu <dinghao.liu@zju.edu.cn> Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com> Acked-by: Thierry Reding <treding@nvidia.com>
2020-05-29PCI: vmd: Filter resource type bits from shadow registerJon Derrick
Versions of VMD with the Host Physical Address shadow register use this register to calculate the bus address offset needed to do guest passthrough of the domain. This register shadows the Host Physical Address registers including the resource type bits. After calculating the offset, the extra resource type bits lead to the VMD resources being over-provisioned at the front and under-provisioned at the back. Example: pci 10000:80:02.0: reg 0x10: [mem 0xf801fffc-0xf803fffb 64bit] Expected: pci 10000:80:02.0: reg 0x10: [mem 0xf8020000-0xf803ffff 64bit] If other devices are mapped in the over-provisioned front, it could lead to resource conflict issues with VMD or those devices. Link: https://lore.kernel.org/r/20200528030240.16024-3-jonathan.derrick@intel.com Fixes: a1a30170138c9 ("PCI: vmd: Fix shadow offsets to reflect spec changes") Signed-off-by: Jon Derrick <jonathan.derrick@intel.com> Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
2020-05-29xen/pci: Get rid of verbose_request and use dev_dbg() insteadBoris Ostrovsky
Information printed under verbose_request is clearly used for debugging only. Remove it and use dev_dbg() instead. Signed-off-by: Boris Ostrovsky <boris.ostrovsky@oracle.com> Link: https://lore.kernel.org/r/1590719092-8578-1-git-send-email-boris.ostrovsky@oracle.com Reviewed-by: Juergen Gross <jgross@suse.com> Signed-off-by: Boris Ostrovsky <boris.ostrovsky@oracle.com>
2020-05-29PCI: tegra194: Fix runtime PM imbalance on errorDinghao Liu
pm_runtime_get_sync() increments the runtime PM usage counter even when it returns an error code. Thus a pairing decrement is needed on the error handling path to keep the counter balanced. Link: https://lore.kernel.org/r/20200521031355.7022-1-dinghao.liu@zju.edu.cn Signed-off-by: Dinghao Liu <dinghao.liu@zju.edu.cn> Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com> Acked-by: Thierry Reding <treding@nvidia.com> Acked-by: Vidya Sagar <vidyas@nvidia.com>
2020-05-28PCI: hv: Use struct_size() helperGustavo A. R. Silva
One of the more common cases of allocation size calculations is finding the size of a structure that has a zero-sized array at the end, along with memory for some number of elements for that array. For example: struct hv_dr_state { ... struct hv_pcidev_description func[]; }; struct pci_bus_relations { ... struct pci_function_description func[]; } __packed; Make use of the struct_size() helper instead of an open-coded version in order to avoid any potential type mistakes. So, replace the following forms: offsetof(struct hv_dr_state, func) + (sizeof(struct hv_pcidev_description) * (relations->device_count)) offsetof(struct pci_bus_relations, func) + (sizeof(struct pci_function_description) * (bus_rel->device_count)) with: struct_size(dr, func, relations->device_count) and struct_size(bus_rel, func, bus_rel->device_count) respectively. Link: https://lore.kernel.org/r/20200525164319.GA13596@embeddedor Signed-off-by: Gustavo A. R. Silva <gustavoars@kernel.org> Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com> Reviewed-by: Wei Liu <wei.liu@kernel.org>
2020-05-27PCI: Rename _DSM constants to align with specKrzysztof Wilczyński
Rename PCI-related _DSM constants to align them with the PCI Firmware Spec, r3.2, sec 4.6. No functional change intended. Link: https://lore.kernel.org/r/20200526213905.2479381-1-kw@linux.com Signed-off-by: Krzysztof Wilczyński <kw@linux.com> Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
2020-05-27PCI: Avoid FLR for AMD Starship USB 3.0Kevin Buettner
The AMD Starship USB 3.0 host controller advertises Function Level Reset support, but it apparently doesn't work. Add a quirk to prevent use of FLR on this device. Without this quirk, when attempting to assign (pass through) an AMD Starship USB 3.0 host controller to a guest OS, the system becomes increasingly unresponsive over the course of several minutes, eventually requiring a hard reset. Shortly after attempting to start the guest, I see these messages: vfio-pci 0000:05:00.3: not ready 1023ms after FLR; waiting vfio-pci 0000:05:00.3: not ready 2047ms after FLR; waiting vfio-pci 0000:05:00.3: not ready 4095ms after FLR; waiting vfio-pci 0000:05:00.3: not ready 8191ms after FLR; waiting And then eventually: vfio-pci 0000:05:00.3: not ready 65535ms after FLR; giving up INFO: NMI handler (perf_event_nmi_handler) took too long to run: 0.000 msecs perf: interrupt took too long (642744 > 2500), lowering kernel.perf_event_max_sample_rate to 1000 INFO: NMI handler (perf_event_nmi_handler) took too long to run: 82.270 msecs INFO: NMI handler (perf_event_nmi_handler) took too long to run: 680.608 msecs INFO: NMI handler (perf_event_nmi_handler) took too long to run: 100.952 msecs ... watchdog: BUG: soft lockup - CPU#3 stuck for 22s! [qemu-system-x86:7487] Tested on a Micro-Star International Co., Ltd. MS-7C59/Creator TRX40 motherboard with an AMD Ryzen Threadripper 3970X. Link: https://lore.kernel.org/r/20200524003529.598434ff@f31-4.lan Signed-off-by: Kevin Buettner <kevinb@redhat.com> Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
2020-05-27PCI: Avoid FLR for AMD Matisse HD Audio & USB 3.0Marcos Scriven
The AMD Matisse HD Audio & USB 3.0 devices advertise Function Level Reset support, but hang when an FLR is triggered. To reproduce the problem, attach the device to a VM, then detach and try to attach again. Rename the existing quirk_intel_no_flr(), which was not Intel-specific, to quirk_no_flr(), and apply it to prevent the use of FLR on these AMD devices. Link: https://lore.kernel.org/r/CAAri2DpkcuQZYbT6XsALhx2e6vRqPHwtbjHYeiH7MNp4zmt1RA@mail.gmail.com Signed-off-by: Marcos Scriven <marcos@scriven.org> Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
2020-05-27PCI/ATS: Only enable ATS for trusted devicesJean-Philippe Brucker
Add pci_ats_supported(), which checks whether a device has an ATS capability, and whether it is trusted. A device is untrusted if it is plugged into an external-facing port such as Thunderbolt and could be spoofing an existing device to exploit weaknesses in the IOMMU configuration. PCIe ATS is one such weaknesses since it allows endpoints to cache IOMMU translations and emit transactions with 'Translated' Address Type (10b) that partially bypass the IOMMU translation. The SMMUv3 and VT-d IOMMU drivers already disallow ATS and transactions with 'Translated' Address Type for untrusted devices. Add the check to pci_enable_ats() to let other drivers (AMD IOMMU for now) benefit from it. By checking ats_cap, the pci_ats_supported() helper also returns whether ATS was globally disabled with pci=noats, and could later include more things, for example whether the whole PCIe hierarchy down to the endpoint supports ATS. Signed-off-by: Jean-Philippe Brucker <jean-philippe@linaro.org> Reviewed-by: Joerg Roedel <jroedel@suse.de> Acked-by: Bjorn Helgaas <bhelgaas@google.com> Link: https://lore.kernel.org/r/20200520152201.3309416-2-jean-philippe@linaro.org Signed-off-by: Joerg Roedel <jroedel@suse.de>
2020-05-27PCI: Add Loongson PCI Controller supportJiaxun Yang
This controller can be found on Loongson-2K SoC, Loongson-3 systems with RS780E/LS7A PCH. The RS780E part of code was previously located at arch/mips/pci/ops-loongson3.c and now it can use generic PCI driver implementation. Signed-off-by: Jiaxun Yang <jiaxun.yang@flygoat.com> Reviewed-by: Rob Herring <robh@kernel.org> Acked-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com> Signed-off-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
2020-05-27PCI: Don't disable decoding when mmio_always_on is setJiaxun Yang
Don't disable MEM/IO decoding when a device have both non_compliant_bars and mmio_always_on. That would allow us quirk devices with junk in BARs but can't disable their decoding. Signed-off-by: Jiaxun Yang <jiaxun.yang@flygoat.com> Acked-by: Bjorn Helgaas <helgaas@kernel.org> Signed-off-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de>