summaryrefslogtreecommitdiff
path: root/include/linux/pci.h
AgeCommit message (Collapse)Author
2021-06-24PCI: Export pci_dev_trylock() and pci_dev_unlock()Luis Chamberlain
Other places in the kernel use this form, and so just provide a common path for it. Acked-by: Bjorn Helgaas <bhelgaas@google.com> Signed-off-by: Luis Chamberlain <mcgrof@kernel.org> Reviewed-by: Cornelia Huck <cohuck@redhat.com> Link: https://lore.kernel.org/r/20210623022824.308041-2-mcgrof@kernel.org Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
2021-06-23Backmerge tag 'v5.13-rc7' into drm-nextDave Airlie
Backmerge Linux 5.13-rc7 to make some pulls from later bases apply, and to bake in the conflicts so far.
2021-06-02PCI: Add empty stub for pci_register_io_range()Rob Herring
Add an empty stub for pci_register_io_range() when !CONFIG_PCI. It's needed to convert of_pci_range_to_resource() to use IS_ENABLED(CONFIG_PCI). Cc: Bjorn Helgaas <bhelgaas@google.com> Cc: linux-pci@vger.kernel.org Signed-off-by: Rob Herring <robh@kernel.org> Acked-by: Bjorn Helgaas <bhelgaas@google.com> Link: https://lore.kernel.org/r/20210527194547.1287934-2-robh@kernel.org
2021-05-25PCI/MSI: Fix MSIs for generic hosts that use device-tree's "msi-map"Jean-Philippe Brucker
Since commit 9ec37efb8783 ("PCI/MSI: Make pci_host_common_probe() declare its reliance on MSI domains"), platforms that rely on the "msi-map" device-tree property don't get MSIs anymore. On the Arm Fast Model for example [1], the host bridge doesn't have a "msi-parent" property since it doesn't itself generate MSIs, and so doesn't get a MSI domain. It has an "msi-map" property instead to describe MSI controllers of child devices. As a result, due to the new msi_domain check in pci_register_host_bridge(), the whole bus gets PCI_BUS_FLAGS_NO_MSI. Check whether the root complex has an "msi-map" property before giving up on MSIs. [1] arch/arm64/boot/dts/arm/fvp-base-revc.dts Fixes: 9ec37efb8783 ("PCI/MSI: Make pci_host_common_probe() declare its reliance on MSI domains") Link: https://lore.kernel.org/r/20210510173129.750496-1-jean-philippe@linaro.org Signed-off-by: Jean-Philippe Brucker <jean-philippe@linaro.org> Signed-off-by: Bjorn Helgaas <bhelgaas@google.com> Acked-by: Marc Zyngier <maz@kernel.org>
2021-05-19PCI: Add support for dev_groups to struct pci_driverAndrey Grodzovsky
This helps converting PCI drivers sysfs attributes to static. Analogous to' commit b71b283e3d6d ("USB: add support for dev_groups to struct usb_driver")' Signed-off-by: Andrey Grodzovsky <andrey.grodzovsky@amd.com> Suggested-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Acked-by: Bjorn Helgaas <bhelgaas@google.com> Link: https://patchwork.freedesktop.org/patch/msgid/20210512142648.666476-8-andrey.grodzovsky@amd.com
2021-05-05Merge tag 'pci-v5.13-changes' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci Pull pci updates from Bjorn Helgaas: "Enumeration: - Release OF node when pci_scan_device() fails (Dmitry Baryshkov) - Add pci_disable_parity() (Bjorn Helgaas) - Disable Mellanox Tavor parity reporting (Heiner Kallweit) - Disable N2100 r8169 parity reporting (Heiner Kallweit) - Fix RCiEP device to RCEC association (Qiuxu Zhuo) - Convert sysfs "config", "rom", "reset", "label", "index", "acpi_index" to static attributes to help fix races in device enumeration (Krzysztof Wilczyński) - Convert sysfs "vpd" to static attribute (Heiner Kallweit, Krzysztof Wilczyński) - Use sysfs_emit() in "show" functions (Krzysztof Wilczyński) - Remove unused alloc_pci_root_info() return value (Krzysztof Wilczyński) PCI device hotplug: - Fix acpiphp reference count leak (Feilong Lin) Power management: - Fix acpi_pci_set_power_state() debug message (Rafael J. Wysocki) - Fix runtime PM imbalance (Dinghao Liu) Virtualization: - Increase delay after FLR to work around Intel DC P4510 NVMe erratum (Raphael Norwitz) MSI: - Convert rcar, tegra, xilinx to MSI domains (Marc Zyngier) - For rcar, xilinx, use controller address as MSI doorbell (Marc Zyngier) - Remove unused hv msi_controller struct (Marc Zyngier) - Remove unused PCI core msi_controller support (Marc Zyngier) - Remove struct msi_controller altogether (Marc Zyngier) - Remove unused default_teardown_msi_irqs() (Marc Zyngier) - Let host bridges declare their reliance on MSI domains (Marc Zyngier) - Make pci_host_common_probe() declare its reliance on MSI domains (Marc Zyngier) - Advertise mediatek lack of built-in MSI handling (Thomas Gleixner) - Document ways of ending up with NO_MSI (Marc Zyngier) - Refactor HT advertising of NO_MSI flag (Marc Zyngier) VPD: - Remove obsolete Broadcom NIC VPD length-limiting quirk (Heiner Kallweit) - Remove sysfs VPD size checking dead code (Heiner Kallweit) - Convert VPF sysfs file to static attribute (Heiner Kallweit) - Remove unnecessary pci_set_vpd_size() (Heiner Kallweit) - Tone down "missing VPD" message (Heiner Kallweit) Endpoint framework: - Fix NULL pointer dereference when epc_features not implemented (Shradha Todi) - Add missing destroy_workqueue() in endpoint test (Yang Yingliang) Amazon Annapurna Labs PCIe controller driver: - Fix compile testing without CONFIG_PCI_ECAM (Arnd Bergmann) - Fix "no symbols" warnings when compile testing with CONFIG_TRIM_UNUSED_KSYMS (Arnd Bergmann) APM X-Gene PCIe controller driver: - Fix cfg resource mapping regression (Dejin Zheng) Broadcom iProc PCIe controller driver: - Return zero for success of iproc_msi_irq_domain_alloc() (Pali Rohár) Broadcom STB PCIe controller driver: - Add reset_control_rearm() stub for !CONFIG_RESET_CONTROLLER (Jim Quinlan) - Fix use of BCM7216 reset controller (Jim Quinlan) - Use reset/rearm for Broadcom STB pulse reset instead of deassert/assert (Jim Quinlan) - Fix brcm_pcie_probe() error return for unsupported revision (Wei Yongjun) Cavium ThunderX PCIe controller driver: - Fix compile testing (Arnd Bergmann) - Fix "no symbols" warnings when compile testing with CONFIG_TRIM_UNUSED_KSYMS (Arnd Bergmann) Freescale Layerscape PCIe controller driver: - Fix ls_pcie_ep_probe() syntax error (comma for semicolon) (Krzysztof Wilczyński) - Remove layerscape-gen4 dependencies on OF and ARM64, add dependency on ARCH_LAYERSCAPE (Geert Uytterhoeven) HiSilicon HIP PCIe controller driver: - Remove obsolete HiSilicon PCIe DT description (Dongdong Liu) Intel Gateway PCIe controller driver: - Remove unused pcie_app_rd() (Jiapeng Chong) Intel VMD host bridge driver: - Program IRTE with Requester ID of VMD endpoint, not child device (Jon Derrick) - Disable VMD MSI-X remapping when possible so children can use more MSI-X vectors (Jon Derrick) MediaTek PCIe controller driver: - Configure FC and FTS for functions other than 0 (Ryder Lee) - Add YAML schema for MediaTek (Jianjun Wang) - Export pci_pio_to_address() for module use (Jianjun Wang) - Add MediaTek MT8192 PCIe controller driver (Jianjun Wang) - Add MediaTek MT8192 INTx support (Jianjun Wang) - Add MediaTek MT8192 MSI support (Jianjun Wang) - Add MediaTek MT8192 system power management support (Jianjun Wang) - Add missing MODULE_DEVICE_TABLE (Qiheng Lin) Microchip PolarFlare PCIe controller driver: - Make several symbols static (Wei Yongjun) NVIDIA Tegra PCIe controller driver: - Add MCFG quirks for Tegra194 ECAM errata (Vidya Sagar) - Make several symbols const (Rikard Falkeborn) - Fix Kconfig host/endpoint typo (Wesley Sheng) SiFive FU740 PCIe controller driver: - Add pcie_aux clock to prci driver (Greentime Hu) - Use reset-simple in prci driver for PCIe (Greentime Hu) - Add SiFive FU740 PCIe host controller driver and DT binding (Paul Walmsley, Greentime Hu) Synopsys DesignWare PCIe controller driver: - Move MSI Receiver init to dw_pcie_host_init() so it is re-initialized along with the RC in resume (Jisheng Zhang) - Move iATU detection earlier to fix regression (Hou Zhiqiang) TI J721E PCIe driver: - Add DT binding and TI j721e support for refclk to PCIe connector (Kishon Vijay Abraham I) - Add host mode and endpoint mode DT bindings for TI AM64 SoC (Kishon Vijay Abraham I) TI Keystone PCIe controller driver: - Use generic config accessors for TI AM65x (K3) to fix regression (Kishon Vijay Abraham I) Xilinx NWL PCIe controller driver: - Add support for coherent PCIe DMA traffic using CCI (Bharat Kumar Gogada) - Add optional "dma-coherent" DT property (Bharat Kumar Gogada) Miscellaneous: - Fix kernel-doc warnings (Krzysztof Wilczyński) - Remove unused MicroGate SyncLink device IDs (Jiri Slaby) - Remove redundant dev_err() for devm_ioremap_resource() failure (Chen Hui) - Remove redundant initialization (Colin Ian King) - Drop redundant dev_err() for platform_get_irq() errors (Krzysztof Wilczyński)" * tag 'pci-v5.13-changes' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci: (98 commits) riscv: dts: Add PCIe support for the SiFive FU740-C000 SoC PCI: fu740: Add SiFive FU740 PCIe host controller driver dt-bindings: PCI: Add SiFive FU740 PCIe host controller MAINTAINERS: Add maintainers for SiFive FU740 PCIe driver clk: sifive: Use reset-simple in prci driver for PCIe driver clk: sifive: Add pcie_aux clock in prci driver for PCIe driver PCI: brcmstb: Use reset/rearm instead of deassert/assert ata: ahci_brcm: Fix use of BCM7216 reset controller reset: add missing empty function reset_control_rearm() PCI: Allow VPD access for QLogic ISP2722 PCI/VPD: Add helper pci_get_func0_dev() PCI/VPD: Remove pci_vpd_find_tag() SRDT handling PCI/VPD: Remove pci_vpd_find_tag() 'offset' argument PCI/VPD: Change pci_vpd_init() return type to void PCI/VPD: Make missing VPD message less alarming PCI/VPD: Remove pci_set_vpd_size() x86/PCI: Remove unused alloc_pci_root_info() return value MAINTAINERS: Add Jianjun Wang as MediaTek PCI co-maintainer PCI: mediatek-gen3: Add system PM support PCI: mediatek-gen3: Add MSI support ...
2021-05-04Merge tag 'dmaengine-5.13-rc1' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/vkoul/dmaengine Pull dmaengine updates from Vinod Koul: "New drivers/devices: - Support for QCOM SM8150 GPI DMA Updates: - Big pile of idxd updates including support for performance monitoring - Support in dw-edma for interleaved dma - Support for synchronize() in Xilinx driver" * tag 'dmaengine-5.13-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/vkoul/dmaengine: (42 commits) dmaengine: idxd: Enable IDXD performance monitor support dmaengine: idxd: Add IDXD performance monitor support dmaengine: idxd: remove MSIX masking for interrupt handlers dmaengine: idxd: device cmd should use dedicated lock dmaengine: idxd: support reporting of halt interrupt dmaengine: idxd: enable SVA feature for IOMMU dmaengine: idxd: convert sprintf() to sysfs_emit() for all usages dmaengine: idxd: add interrupt handle request and release support dmaengine: idxd: add support for readonly config mode dmaengine: idxd: add percpu_ref to descriptor submission path dmaengine: idxd: remove detection of device type dmaengine: idxd: iax bus removal dmaengine: idxd: fix cdev setup and free device lifetime issues dmaengine: idxd: fix group conf_dev lifetime dmaengine: idxd: fix engine conf_dev lifetime dmaengine: idxd: fix wq conf_dev 'struct device' lifetime dmaengine: idxd: fix idxd conf_dev 'struct device' lifetime dmaengine: idxd: use ida for device instance enumeration dmaengine: idxd: removal of pcim managed mmio mapping dmaengine: idxd: cleanup pci interrupt vector allocation management ...
2021-05-04Merge branch 'remotes/lorenzo/pci/msi'Bjorn Helgaas
- Convert tegra to MSI domains (Marc Zyngier) - Use rcar controller address as MSI doorbell instead of allocating a page (Marc Zyngier) - Convert rcar to MSI domains (Marc Zyngier) - Use xilinx port structure as MSI doorbell instead of allocating a page (Marc Zyngier) - Convert xilinx to MSI domains (Marc Zyngier) - Remove unused Hyper-V msi_controller structure (Marc Zyngier) - Remove unused PCI core msi_controller support (Marc Zyngier) - Remove struct msi_controller (Marc Zyngier) - Remove unused default_teardown_msi_irqs() (Marc Zyngier) - Let host bridges declare their reliance on MSI domains (Marc Zyngier) - Make pci_host_common_probe() declare its reliance on MSI domains (Marc Zyngier) - Advertise mediatek lack of built-in MSI handling (Thomas Gleixner) - Document ways of ending up with NO_MSI (Marc Zyngier) - Refactor HT advertising of NO_MSI flag (Marc Zyngier) * remotes/lorenzo/pci/msi: PCI: Refactor HT advertising of NO_MSI flag PCI/MSI: Document the various ways of ending up with NO_MSI PCI: mediatek: Advertise lack of built-in MSI handling PCI/MSI: Make pci_host_common_probe() declare its reliance on MSI domains PCI/MSI: Let PCI host bridges declare their reliance on MSI domains PCI/MSI: Kill default_teardown_msi_irqs() PCI/MSI: Kill msi_controller structure PCI/MSI: Drop use of msi_controller from core code PCI: hv: Drop msi_controller structure PCI: xilinx: Convert to MSI domains PCI: xilinx: Don't allocate extra memory for the MSI capture address PCI: rcar: Convert to MSI domains PCI: rcar: Don't allocate extra memory for the MSI capture address PCI: tegra: Convert to MSI domains
2021-05-04Merge branch 'pci/sysfs'Bjorn Helgaas
- Convert sysfs "config", "rom", "reset", "label", "index", "acpi_index" to static attributes to fix races in device enumeration (Krzysztof Wilczyński) - Convert sysfs "vpd" to static attribute (Heiner Kallweit, Krzysztof Wilczyński) - Use sysfs_emit() in "show" functions (Krzysztof Wilczyński) * pci/sysfs: PCI/sysfs: Use sysfs_emit() and sysfs_emit_at() in "show" functions PCI/sysfs: Rearrange smbios_attr_group and acpi_attr_group PCI/sysfs: Tidy SMBIOS & ACPI label attributes PCI/sysfs: Convert "index", "acpi_index", "label" to static attributes PCI/sysfs: Define SMBIOS label attributes with DEVICE_ATTR*() PCI/sysfs: Define ACPI label attributes with DEVICE_ATTR*() PCI/sysfs: Rename device_has_dsm() to device_has_acpi_name() PCI/sysfs: Convert "vpd" to static attribute PCI/sysfs: Rename "vpd" attribute accessors PCI/sysfs: Convert "reset" to static attribute PCI/sysfs: Convert "rom" to static attribute PCI/sysfs: Convert "config" to static attribute
2021-05-04Merge branch 'pci/vpd'Bjorn Helgaas
- Remove obsolete Broadcom NIC VPD length-limiting quirk (Heiner Kallweit) - Remove sysfs VPD size checking dead code (Heiner Kallweit) - Convert VPF sysfs file to static attribute (Heiner Kallweit) - Remove unnecessary pci_set_vpd_size() (Heiner Kallweit) - Tone down "missing VPD" message (Heiner Kallweit) * pci/vpd: PCI: Allow VPD access for QLogic ISP2722 PCI/VPD: Add helper pci_get_func0_dev() PCI/VPD: Remove pci_vpd_find_tag() SRDT handling PCI/VPD: Remove pci_vpd_find_tag() 'offset' argument PCI/VPD: Change pci_vpd_init() return type to void PCI/VPD: Make missing VPD message less alarming PCI/VPD: Remove pci_set_vpd_size() PCI/VPD: Remove sysfs accessor size checking dead code PCI/VPD: Remove obsolete Broadcom NIC quirk
2021-04-30PCI/VPD: Remove pci_vpd_find_tag() 'offset' argumentHeiner Kallweit
All callers pass 0 as offset. Therefore remove the parameter and use a fixed offset 0 in pci_vpd_find_tag(). Link: https://lore.kernel.org/r/f62e6e19-5423-2ead-b2bd-62844b23ef8f@gmail.com Signed-off-by: Heiner Kallweit <hkallweit1@gmail.com> Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
2021-04-30PCI/VPD: Remove pci_set_vpd_size()Heiner Kallweit
24a1720a0841 ("cxgb4: collect serial config version from register") removed the only usage of pci_set_vpd_size(). If a device needs to override the auto-detected VPD size, then this can be done with a PCI quirk, as is done for Chelsio devices. There's no need to allow drivers to change the VPD size. Remove pci_set_vpd_size(). [bhelgaas: squash in Arnd's fix for "'pci_vpd_set_size' defined but not used" from https://lore.kernel.org/r/20210421140334.3847155-1-arnd@kernel.org] Link: https://lore.kernel.org/r/47d86e52-9bcf-7da7-1edb-0d988a7a82ab@gmail.com Signed-off-by: Heiner Kallweit <hkallweit1@gmail.com> Signed-off-by: Bjorn Helgaas <bhelgaas@google.com> Reviewed-by: Krzysztof Wilczyński <kw@linux.com>
2021-04-29Merge tag 'net-next-5.13' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next Pull networking updates from Jakub Kicinski: "Core: - bpf: - allow bpf programs calling kernel functions (initially to reuse TCP congestion control implementations) - enable task local storage for tracing programs - remove the need to store per-task state in hash maps, and allow tracing programs access to task local storage previously added for BPF_LSM - add bpf_for_each_map_elem() helper, allowing programs to walk all map elements in a more robust and easier to verify fashion - sockmap: support UDP and cross-protocol BPF_SK_SKB_VERDICT redirection - lpm: add support for batched ops in LPM trie - add BTF_KIND_FLOAT support - mostly to allow use of BTF on s390 which has floats in its headers files - improve BPF syscall documentation and extend the use of kdoc parsing scripts we already employ for bpf-helpers - libbpf, bpftool: support static linking of BPF ELF files - improve support for encapsulation of L2 packets - xdp: restructure redirect actions to avoid a runtime lookup, improving performance by 4-8% in microbenchmarks - xsk: build skb by page (aka generic zerocopy xmit) - improve performance of software AF_XDP path by 33% for devices which don't need headers in the linear skb part (e.g. virtio) - nexthop: resilient next-hop groups - improve path stability on next-hops group changes (incl. offload for mlxsw) - ipv6: segment routing: add support for IPv4 decapsulation - icmp: add support for RFC 8335 extended PROBE messages - inet: use bigger hash table for IP ID generation - tcp: deal better with delayed TX completions - make sure we don't give up on fast TCP retransmissions only because driver is slow in reporting that it completed transmitting the original - tcp: reorder tcp_congestion_ops for better cache locality - mptcp: - add sockopt support for common TCP options - add support for common TCP msg flags - include multiple address ids in RM_ADDR - add reset option support for resetting one subflow - udp: GRO L4 improvements - improve 'forward' / 'frag_list' co-existence with UDP tunnel GRO, allowing the first to take place correctly even for encapsulated UDP traffic - micro-optimize dev_gro_receive() and flow dissection, avoid retpoline overhead on VLAN and TEB GRO - use less memory for sysctls, add a new sysctl type, to allow using u8 instead of "int" and "long" and shrink networking sysctls - veth: allow GRO without XDP - this allows aggregating UDP packets before handing them off to routing, bridge, OvS, etc. - allow specifing ifindex when device is moved to another namespace - netfilter: - nft_socket: add support for cgroupsv2 - nftables: add catch-all set element - special element used to define a default action in case normal lookup missed - use net_generic infra in many modules to avoid allocating per-ns memory unnecessarily - xps: improve the xps handling to avoid potential out-of-bound accesses and use-after-free when XPS change race with other re-configuration under traffic - add a config knob to turn off per-cpu netdev refcnt to catch underflows in testing Device APIs: - add WWAN subsystem to organize the WWAN interfaces better and hopefully start driving towards more unified and vendor- independent APIs - ethtool: - add interface for reading IEEE MIB stats (incl. mlx5 and bnxt support) - allow network drivers to dump arbitrary SFP EEPROM data, current offset+length API was a poor fit for modern SFP which define EEPROM in terms of pages (incl. mlx5 support) - act_police, flow_offload: add support for packet-per-second policing (incl. offload for nfp) - psample: add additional metadata attributes like transit delay for packets sampled from switch HW (and corresponding egress and policy-based sampling in the mlxsw driver) - dsa: improve support for sandwiched LAGs with bridge and DSA - netfilter: - flowtable: use direct xmit in topologies with IP forwarding, bridging, vlans etc. - nftables: counter hardware offload support - Bluetooth: - improvements for firmware download w/ Intel devices - add support for reading AOSP vendor capabilities - add support for virtio transport driver - mac80211: - allow concurrent monitor iface and ethernet rx decap - set priority and queue mapping for injected frames - phy: add support for Clause-45 PHY Loopback - pci/iov: add sysfs MSI-X vector assignment interface to distribute MSI-X resources to VFs (incl. mlx5 support) New hardware/drivers: - dsa: mv88e6xxx: add support for Marvell mv88e6393x - 11-port Ethernet switch with 8x 1-Gigabit Ethernet and 3x 10-Gigabit interfaces. - dsa: support for legacy Broadcom tags used on BCM5325, BCM5365 and BCM63xx switches - Microchip KSZ8863 and KSZ8873; 3x 10/100Mbps Ethernet switches - ath11k: support for QCN9074 a 802.11ax device - Bluetooth: Broadcom BCM4330 and BMC4334 - phy: Marvell 88X2222 transceiver support - mdio: add BCM6368 MDIO mux bus controller - r8152: support RTL8153 and RTL8156 (USB Ethernet) chips - mana: driver for Microsoft Azure Network Adapter (MANA) - Actions Semi Owl Ethernet MAC - can: driver for ETAS ES58X CAN/USB interfaces Pure driver changes: - add XDP support to: enetc, igc, stmmac - add AF_XDP support to: stmmac - virtio: - page_to_skb() use build_skb when there's sufficient tailroom (21% improvement for 1000B UDP frames) - support XDP even without dedicated Tx queues - share the Tx queues with the stack when necessary - mlx5: - flow rules: add support for mirroring with conntrack, matching on ICMP, GTP, flex filters and more - support packet sampling with flow offloads - persist uplink representor netdev across eswitch mode changes - allow coexistence of CQE compression and HW time-stamping - add ethtool extended link error state reporting - ice, iavf: support flow filters, UDP Segmentation Offload - dpaa2-switch: - move the driver out of staging - add spanning tree (STP) support - add rx copybreak support - add tc flower hardware offload on ingress traffic - ionic: - implement Rx page reuse - support HW PTP time-stamping - octeon: support TC hardware offloads - flower matching on ingress and egress ratelimitting. - stmmac: - add RX frame steering based on VLAN priority in tc flower - support frame preemption (FPE) - intel: add cross time-stamping freq difference adjustment - ocelot: - support forwarding of MRP frames in HW - support multiple bridges - support PTP Sync one-step timestamping - dsa: mv88e6xxx, dpaa2-switch: offload bridge port flags like learning, flooding etc. - ipa: add IPA v4.5, v4.9 and v4.11 support (Qualcomm SDX55, SM8350, SC7280 SoCs) - mt7601u: enable TDLS support - mt76: - add support for 802.3 rx frames (mt7915/mt7615) - mt7915 flash pre-calibration support - mt7921/mt7663 runtime power management fixes" * tag 'net-next-5.13' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next: (2451 commits) net: selftest: fix build issue if INET is disabled net: netrom: nr_in: Remove redundant assignment to ns net: tun: Remove redundant assignment to ret net: phy: marvell: add downshift support for M88E1240 net: dsa: ksz: Make reg_mib_cnt a u8 as it never exceeds 255 net/sched: act_ct: Remove redundant ct get and check icmp: standardize naming of RFC 8335 PROBE constants bpf, selftests: Update array map tests for per-cpu batched ops bpf: Add batched ops support for percpu array bpf: Implement formatted output helpers with bstr_printf seq_file: Add a seq_bprintf function sfc: adjust efx->xdp_tx_queue_count with the real number of initialized queues net:nfc:digital: Fix a double free in digital_tg_recv_dep_req net: fix a concurrency bug in l2tp_tunnel_register() net/smc: Remove redundant assignment to rc mpls: Remove redundant assignment to err llc2: Remove redundant assignment to rc net/tls: Remove redundant initialization of record rds: Remove redundant assignment to nr_sig dt-bindings: net: mdio-gpio: add compatible for microchip,mdio-smi0 ...
2021-04-27PCI/sysfs: Convert "rom" to static attributeKrzysztof Wilczyński
The "rom" sysfs attribute allows access to the PCI Option ROM. Previously it was dynamically created either by pci_bus_add_device() or the pci_sysfs_init() initcall, but since it doesn't need to be created or removed dynamically, we can use a static attribute so the device model takes care of addition and removal automatically. Convert "rom" to a static attribute and use the .is_bin_visible() callback to set the correct object size based on the ROM size. Remove "rom_attr" from the struct pci_dev since it is no longer needed. This attribute was added in the pre-git era by https://git.kernel.org/pub/scm/linux/kernel/git/tglx/history.git/commit/drivers/pci/pci-sysfs.c?id=f6d553444da2 [bhelgaas: commit log] Suggested-by: Oliver O'Halloran <oohall@gmail.com> Link: https://lore.kernel.org/r/20210416205856.3234481-3-kw@linux.com Signed-off-by: Krzysztof Wilczyński <kw@linux.com> Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
2021-04-20PCI/MSI: Let PCI host bridges declare their reliance on MSI domainsMarc Zyngier
There is a whole class of host bridges that cannot know whether MSIs will be provided or not, as they rely on other blocks to provide the MSI functionnality, using MSI domains. This is the case for example on systems that use the ARM GIC architecture. Introduce a new attribute ('msi_domain') indicating that implicit dependency, and use this property to set the NO_MSI flag when no MSI domain is found at probe time. Link: https://lore.kernel.org/r/20210330151145.997953-11-maz@kernel.org Signed-off-by: Marc Zyngier <maz@kernel.org> Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com> Acked-by: Bjorn Helgaas <bhelgaas@google.com>
2021-04-20PCI/MSI: Drop use of msi_controller from core codeMarc Zyngier
As there is no driver using msi_controller, we can now safely remove its use from the PCI probe code. Link: https://lore.kernel.org/r/20210330151145.997953-8-maz@kernel.org Signed-off-by: Marc Zyngier <maz@kernel.org> Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com> Acked-by: Bjorn Helgaas <bhelgaas@google.com>
2021-04-08cfi: add __cficanonicalSami Tolvanen
With CONFIG_CFI_CLANG, the compiler replaces a function address taken in C code with the address of a local jump table entry, which passes runtime indirect call checks. However, the compiler won't replace addresses taken in assembly code, which will result in a CFI failure if we later jump to such an address in instrumented C code. The code generated for the non-canonical jump table looks this: <noncanonical.cfi_jt>: /* In C, &noncanonical points here */ jmp noncanonical ... <noncanonical>: /* function body */ ... This change adds the __cficanonical attribute, which tells the compiler to use a canonical jump table for the function instead. This means the compiler will rename the actual function to <function>.cfi and points the original symbol to the jump table entry instead: <canonical>: /* jump table entry */ jmp canonical.cfi ... <canonical.cfi>: /* function body */ ... As a result, the address taken in assembly, or other non-instrumented code always points to the jump table and therefore, can be used for indirect calls in instrumented code without tripping CFI checks. Signed-off-by: Sami Tolvanen <samitolvanen@google.com> Reviewed-by: Kees Cook <keescook@chromium.org> Acked-by: Bjorn Helgaas <bhelgaas@google.com> # pci.h Tested-by: Nathan Chancellor <nathan@kernel.org> Signed-off-by: Kees Cook <keescook@chromium.org> Link: https://lore.kernel.org/r/20210408182843.1754385-3-samitolvanen@google.com
2021-04-04PCI/IOV: Add sysfs MSI-X vector assignment interfaceLeon Romanovsky
A typical cloud provider SR-IOV use case is to create many VFs for use by guest VMs. The VFs may not be assigned to a VM until a customer requests a VM of a certain size, e.g., number of CPUs. A VF may need MSI-X vectors proportional to the number of CPUs in the VM, but there is no standard way to change the number of MSI-X vectors supported by a VF. Some Mellanox ConnectX devices support dynamic assignment of MSI-X vectors to SR-IOV VFs. This can be done by the PF driver after VFs are enabled, and it can be done without affecting VFs that are already in use. The hardware supports a limited pool of MSI-X vectors that can be assigned to the PF or to individual VFs. This is device-specific behavior that requires support in the PF driver. Add a read-only "sriov_vf_total_msix" sysfs file for the PF and a writable "sriov_vf_msix_count" file for each VF. Management software may use these to learn how many MSI-X vectors are available and to dynamically assign them to VFs before the VFs are passed through to a VM. If the PF driver implements the ->sriov_get_vf_total_msix() callback, "sriov_vf_total_msix" contains the total number of MSI-X vectors available for distribution among VFs. If no driver is bound to the VF, writing "N" to "sriov_vf_msix_count" uses the PF driver ->sriov_set_msix_vec_count() callback to assign "N" MSI-X vectors to the VF. When a VF driver subsequently reads the MSI-X Message Control register, it will see the new Table Size "N". Link: https://lore.kernel.org/linux-pci/20210314124256.70253-2-leon@kernel.org Acked-by: Bjorn Helgaas <bhelgaas@google.com> Signed-off-by: Leon Romanovsky <leonro@nvidia.com>
2021-03-31PCI: Add pci_disable_parity()Bjorn Helgaas
Add pci_disable_parity() to disable reporting of parity errors for a device by clearing PCI_COMMAND_PARITY. The device will still set PCI_STATUS_DETECTED_PARITY when it detects a parity error or receives a Poisoned TLP, but it will not set PCI_STATUS_PARITY, which means it will not assert PERR# (conventional PCI) or report Poisoned TLPs (PCIe). Based-on: https://lore.kernel.org/linux-arm-kernel/d375987c-ea4f-dd98-4ef8-99b2fbfe7c33@gmail.com/ Based-on-patch-by: Heiner Kallweit <hkallweit1@gmail.com> Link: https://lore.kernel.org/r/20210330174318.1289680-2-helgaas@kernel.org Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
2021-03-16PCI: Add pci_find_vsec_capability() to find a specific VSECGustavo Pimentel
Add pci_find_vsec_capability() to locate a Vendor-Specific Extended Capability with the specified VSEC ID. The Vendor-Specific Extended Capability (VSEC) allows one or more proprietary capabilities defined by the vendor which aren't standard or shared between vendors. Signed-off-by: Gustavo Pimentel <gustavo.pimentel@synopsys.com> Acked-by: Bjorn Helgaas <bhelgaas@google.com> Link: https://lore.kernel.org/r/d89506834fb11c6fa0bd5d515c0dd55b13ac6958.1613674948.git.gustavo.pimentel@synopsys.com Signed-off-by: Vinod Koul <vkoul@kernel.org>
2021-02-23Merge tag 'clang-lto-v5.12-rc1' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/kees/linux Pull clang LTO updates from Kees Cook: "Clang Link Time Optimization. This is built on the work done preparing for LTO by arm64 folks, tracing folks, etc. This includes the core changes as well as the remaining pieces for arm64 (LTO has been the default build method on Android for about 3 years now, as it is the prerequisite for the Control Flow Integrity protections). While x86 LTO enablement is done, it depends on some pending objtool clean-ups. It's possible that I'll send a "part 2" pull request for LTO that includes x86 support. For merge log posterity, and as detailed in commit dc5723b02e52 ("kbuild: add support for Clang LTO"), here is the lt;dr to do an LTO build: make LLVM=1 LLVM_IAS=1 defconfig scripts/config -e LTO_CLANG_THIN make LLVM=1 LLVM_IAS=1 (To do a cross-compile of arm64, add "CROSS_COMPILE=aarch64-linux-gnu-" and "ARCH=arm64" to the "make" command lines.) Summary: - Clang LTO build infrastructure and arm64-specific enablement (Sami Tolvanen) - Recursive build CC_FLAGS_LTO fix (Alexander Lobakin)" * tag 'clang-lto-v5.12-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/kees/linux: kbuild: prevent CC_FLAGS_LTO self-bloating on recursive rebuilds arm64: allow LTO to be selected arm64: disable recordmcount with DYNAMIC_FTRACE_WITH_REGS arm64: vdso: disable LTO drivers/misc/lkdtm: disable LTO for rodata.o efi/libstub: disable LTO scripts/mod: disable LTO for empty.c modpost: lto: strip .lto from module names PCI: Fix PREL32 relocations for LTO init: lto: fix PREL32 relocations init: lto: ensure initcall ordering kbuild: lto: add a default list of used symbols kbuild: lto: merge module sections kbuild: lto: limit inlining kbuild: lto: fix module versioning kbuild: add support for Clang LTO tracing: move function tracer options to Kconfig
2021-01-14PCI: Fix PREL32 relocations for LTOSami Tolvanen
With Clang's Link Time Optimization (LTO), the compiler can rename static functions to avoid global naming collisions. As PCI fixup functions are typically static, renaming can break references to them in inline assembly. This change adds a global stub to DECLARE_PCI_FIXUP_SECTION to fix the issue when PREL32 relocations are used. Signed-off-by: Sami Tolvanen <samitolvanen@google.com> Acked-by: Bjorn Helgaas <bhelgaas@google.com> Reviewed-by: Kees Cook <keescook@chromium.org> Signed-off-by: Kees Cook <keescook@chromium.org> Link: https://lore.kernel.org/r/20201211184633.3213045-10-samitolvanen@google.com
2021-01-14PCI: Add pci_rebar_bytes_to_size()Nirmoy Das
Users of pci_resize_resource() need a way to calculate BAR size from desired bytes. Add a helper function and export it so that modular drivers can use it. Signed-off-by: Darren Salt <devspam@moreofthesa.me.uk> Signed-off-by: Christian König <christian.koenig@amd.com> Signed-off-by: Nirmoy Das <nirmoy.das@amd.com> Acked-by: Bjorn Helgaas <bhelgaas@google.com> Link: https://patchwork.kernel.org/project/dri-devel/patch/20210107175017.15893-3-nirmoy.das@amd.com
2021-01-14PCI: Export pci_rebar_get_possible_sizes()Darren Salt
Export pci_rebar_get_possible_sizes() for use by modular drivers. Signed-off-by: Darren Salt <devspam@moreofthesa.me.uk> Signed-off-by: Nirmoy Das <nirmoy.das@amd.com> Signed-off-by: Christian König <christian.koenig@amd.com> Acked-by: Bjorn Helgaas <bhelgaas@google.com> Link: https://patchwork.kernel.org/project/dri-devel/patch/20210107175017.15893-2-nirmoy.das@amd.com
2020-12-15Merge branch 'pci/pm'Bjorn Helgaas
- Add sysfs attribute for device power state (Maximilian Luz) - Rename pci_wakeup_bus() to pci_resume_bus() (Mika Westerberg) - Do not generate wakeup event when runtime resuming bus (Mika Westerberg) * pci/pm: PCI/PM: Do not generate wakeup event when runtime resuming device PCI/PM: Rename pci_wakeup_bus() to pci_resume_bus() PCI: Add sysfs attribute for device power state
2020-12-15Merge branch 'pci/misc'Bjorn Helgaas
- Update kernel-doc to match function prototypes (Mauro Carvalho Chehab) - Bounds-check "pci=resource_alignment=" requests (Bjorn Helgaas) - Fix integer overflow in "pci=resource_alignment=" requests (Colin Ian King) - Remove unused HAVE_PCI_SET_MWI definition (Heiner Kallweit) - Reduce pci_set_cacheline_size() message to debug level (Heiner Kallweit) * pci/misc: PCI: Reduce pci_set_cacheline_size() message to debug level PCI: Remove unused HAVE_PCI_SET_MWI PCI: Fix overflow in command-line resource alignment requests PCI: Bounds-check command-line resource alignment requests PCI: Fix kernel-doc markup # Conflicts: # drivers/pci/pci-driver.c
2020-12-15Merge branch 'pci/err'Bjorn Helgaas
- Stop writing AER Capability when we don't own it (Sean V Kelley) - Bind RCEC devices to the Port driver (Qiuxu Zhuo) - Cache the RCEC RA Capability offset (Sean V Kelley) - Add pci_walk_bridge() (Sean V Kelley) - Clear AER status only when we control AER (Sean V Kelley) - Recover from RCEC AER errors (Sean V Kelley) - Add pcie_link_rcec() to associate RCiEPs with RCECs (Sean V Kelley) - Recover from RCiEP AER errors (Sean V Kelley) - Add pcie_walk_rcec() for RCEC AER handling (Sean V Kelley) - Add pcie_walk_rcec() for RCEC PME handling (Sean V Kelley) - Add RCEC AER error injection support (Qiuxu Zhuo) * pci/err: PCI/AER: Add RCEC AER error injection support PCI/PME: Add pcie_walk_rcec() to RCEC PME handling PCI/AER: Add pcie_walk_rcec() to RCEC AER handling PCI/ERR: Recover from RCiEP AER errors PCI/ERR: Add pcie_link_rcec() to associate RCiEPs PCI/ERR: Recover from RCEC AER errors PCI/ERR: Clear AER status only when we control AER PCI/ERR: Add pci_walk_bridge() to pcie_do_recovery() PCI/ERR: Avoid negated conditional for clarity PCI/ERR: Use "bridge" for clarity in pcie_do_recovery() PCI/ERR: Simplify by computing pci_pcie_type() once PCI/ERR: Simplify by using pci_upstream_bridge() PCI/ERR: Rename reset_link() to reset_subordinates() PCI/ERR: Cache RCEC EA Capability offset in pci_init_capabilities() PCI/ERR: Bind RCEC devices to the Root Port driver PCI/AER: Write AER Capability only when we control it
2020-12-08PCI: Remove unused HAVE_PCI_SET_MWIHeiner Kallweit
Remove unused HAVE_PCI_SET_MWI. Link: https://lore.kernel.org/r/03f20cac-708d-7897-c7c7-cb4e63cfd991@gmail.com Signed-off-by: Heiner Kallweit <hkallweit1@gmail.com> Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
2020-12-05PCI/ERR: Add pcie_link_rcec() to associate RCiEPsSean V Kelley
A Root Complex Event Collector terminates error and PME messages from associated RCiEPs. Use the RCEC Endpoint Association Extended Capability to identify associated RCiEPs. Link the associated RCiEPs as the RCECs are enumerated. Co-developed-by: Qiuxu Zhuo <qiuxu.zhuo@intel.com> Link: https://lore.kernel.org/r/20201121001036.8560-12-sean.v.kelley@intel.com Tested-by: Jonathan Cameron <Jonathan.Cameron@huawei.com> # non-native/no RCEC Signed-off-by: Qiuxu Zhuo <qiuxu.zhuo@intel.com> Signed-off-by: Sean V Kelley <sean.v.kelley@intel.com> Signed-off-by: Bjorn Helgaas <bhelgaas@google.com> Reviewed-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2020-12-04PCI/PM: Rename pci_wakeup_bus() to pci_resume_bus()Mika Westerberg
A "wakeup" is a signal from a device telling the system that the device or the whole system should be awakened and made active. PCI devices are made active by "resuming" them. pci_wakeup_bus() is not involved with the wakeup signal; it *resumes* devices on a bus (possibly in response to a wakeup signal, but that's at a higher level). Rename pci_wakeup_bus() to pci_resume_bus() to better reflect what it does. No functional change intended. [bhelgaas: commit log, reorder before removal of pci_wakeup_event()] Link: https://lore.kernel.org/r/20201125090733.77782-2-mika.westerberg@linux.intel.com Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com> Signed-off-by: Bjorn Helgaas <bhelgaas@google.com> Reviewed-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2020-12-04PCI: Return u16 from pci_find_ext_capability() and similarBjorn Helgaas
PCI Express Extended Capabilities are in config space between offsets 256 and 4K. These offsets all fit in 16 bits. Change the return type of pci_find_ext_capability() and supporting functions from int to u16 to match the specification. Many callers use "int", which is fine, but there's no need to store more than a u16. Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
2020-12-04PCI: Return u8 from pci_find_capability() and similarPuranjay Mohan
PCI Capabilities are linked in a list that must appear in the first 256 bytes of config space. Each capabilities list pointer is 8 bits. Change the return type of pci_find_capability() and supporting functions from int to u8 to match the specification. [bhelgaas: change other related interfaces, fix HyperTransport typos] Link: https://lore.kernel.org/r/20201129164626.12887-1-puranjay12@gmail.com Signed-off-by: Puranjay Mohan <puranjay12@gmail.com> Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
2020-12-04PCI/ERR: Cache RCEC EA Capability offset in pci_init_capabilities()Sean V Kelley
Extend support for Root Complex Event Collectors by decoding and caching the RCEC Endpoint Association Extended Capabilities when enumerating. Use that cached information for later error source reporting. See PCIe r5.0, sec 7.9.10. Co-developed-by: Qiuxu Zhuo <qiuxu.zhuo@intel.com> Link: https://lore.kernel.org/r/20201121001036.8560-4-sean.v.kelley@intel.com Tested-by: Jonathan Cameron <Jonathan.Cameron@huawei.com> # non-native/no RCEC Signed-off-by: Qiuxu Zhuo <qiuxu.zhuo@intel.com> Signed-off-by: Sean V Kelley <sean.v.kelley@intel.com> Signed-off-by: Bjorn Helgaas <bhelgaas@google.com> Reviewed-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2020-11-20PCI: Decode PCIe 64 GT/s link speedGustavo Pimentel
PCIe r6.0, sec 7.5.3.18, defines a new 64.0 GT/s bit in the Supported Link Speeds Vector of Link Capabilities 2. This patch does not affect the speed of the link, which should be negotiated automatically by the hardware; it only adds decoding when showing the speed to the user. Decode this new speed. Previously, reading the speed of a link operating at this speed showed "Unknown speed" instead of "64.0 GT/s". Link: https://lore.kernel.org/r/aaaab33fe18975e123a84aebce2adb85f44e2bbe.1605739760.git.gustavo.pimentel@synopsys.com Signed-off-by: Gustavo Pimentel <gustavo.pimentel@synopsys.com> Signed-off-by: Bjorn Helgaas <bhelgaas@google.com> Reviewed-by: Krzysztof Wilczyński <kw@linux.com>
2020-10-22Merge tag 'vfio-v5.10-rc1' of git://github.com/awilliam/linux-vfioLinus Torvalds
Pull VFIO updates from Alex Williamson: - New fsl-mc vfio bus driver supporting userspace drivers of objects within NXP's DPAA2 architecture (Diana Craciun) - Support for exposing zPCI information on s390 (Matthew Rosato) - Fixes for "detached" VFs on s390 (Matthew Rosato) - Fixes for pin-pages and dma-rw accesses (Yan Zhao) - Cleanups and optimize vconfig regen (Zenghui Yu) - Fix duplicate irq-bypass token registration (Alex Williamson) * tag 'vfio-v5.10-rc1' of git://github.com/awilliam/linux-vfio: (30 commits) vfio iommu type1: Fix memory leak in vfio_iommu_type1_pin_pages vfio/pci: Clear token on bypass registration failure vfio/fsl-mc: fix the return of the uninitialized variable ret vfio/fsl-mc: Fix the dead code in vfio_fsl_mc_set_irq_trigger vfio/fsl-mc: Fixed vfio-fsl-mc driver compilation on 32 bit MAINTAINERS: Add entry for s390 vfio-pci vfio-pci/zdev: Add zPCI capabilities to VFIO_DEVICE_GET_INFO vfio/fsl-mc: Add support for device reset vfio/fsl-mc: Add read/write support for fsl-mc devices vfio/fsl-mc: trigger an interrupt via eventfd vfio/fsl-mc: Add irq infrastructure for fsl-mc devices vfio/fsl-mc: Added lock support in preparation for interrupt handling vfio/fsl-mc: Allow userspace to MMAP fsl-mc device MMIO regions vfio/fsl-mc: Implement VFIO_DEVICE_GET_REGION_INFO ioctl call vfio/fsl-mc: Implement VFIO_DEVICE_GET_INFO ioctl vfio/fsl-mc: Scan DPRC objects on vfio-fsl-mc driver bind vfio: Introduce capability definitions for VFIO_DEVICE_GET_INFO s390/pci: track whether util_str is valid in the zpci_dev s390/pci: stash version in the zpci_dev vfio/fsl-mc: Add VFIO framework skeleton for fsl-mc devices ...
2020-10-21Merge branch 'remotes/lorenzo/pci/dwc'Bjorn Helgaas
- Fix designware-ep Header Type check (Hou Zhiqiang) - Use DBI accessors instead of own config accessors (Rob Herring) - Allow overriding bridge pci_ops (Rob Herring) - Allow root and child buses to have different pci_ops (Rob Herring) - Add default dwc pci_ops.map_bus (Rob Herring) - Use pci_ops for root config space accessors in al, exynos, histb, keystone, kirin, meson, tegra (Rob Herring) - Remove dwc own/other config accessor ops (Rob Herring) - Use generic config accessors in dwc (Rob Herring) - Also call .add_bus() callback for root bus (Rob Herring) - Convert keystone .scan_bus() callback to use pci_ops.add_bus (Rob Herring) - Convert dwc to use pci_host_probe() (Rob Herring) - Remove dwc root_bus pointer (Rob Herring) - Remove storing of PCI resources in dwc-specific structs (Rob Herring) - Simplify config space handling (Rob Herring) - Drop keystone duplicated DT num-viewport handling (Rob Herring) - Check CONFIG_PCI_MSI in dw_pcie_msi_init() instead of duplicating it in all the drivers (Rob Herring) - Remove imx6 duplicate PCIE_LINK_WIDTH_SPEED_CONTROL definition (Rob Herring) - Add dwc num_lanes for use when it's lacking from DT (Rob Herring) - Ensure "Fast Link Mode" simulation environment setting is cleared (Rob Herring) - Drop meson duplicate number of lanes setup (Rob Herring) - Drop meson unnecessary RC config space init (Rob Herring) - Rework meson config and dwc port logic register accesses (Rob Herring) - Use common PCI register definitions in imx6 and qcom (Rob Herring) - Search for DesignWare PCIe Capability instead of hard-coding its location (Rob Herring) - Use common DesignWare register definitions in tegra (Rob Herring) - Drop keystone unused DBI2 code (Rob Herring) - Make dwc ATU accessors private (Rob Herring) - Centralize link gen setting in dwc (Rob Herring) - Set PORT_LINK_DLL_LINK_EN in common dwc setup code (Rob Herring) - Drop intel-gw unnecessary DT 'device_type' checking (Rob Herring) - Move intel-gw PCI_CAP_ID_EXP discovery to the single place it's used (Rob Herring) - Drop intel-gw unused max_width (Rob Herring) - Move N_FTS (fast training sequence) setup to common dwc setup (Rob Herring) - Convert spear13xx, tegra194 to use DBI accessors (Rob Herring) - Add multiple PFs support for DWC (Xiaowei Bao) - Add MSI-X doorbell mode for endpoint mode (Xiaowei Bao) - Update MSI/MSI-X capability management for endpoints (Xiaowei Bao) - Add layerscape ls1088a and ls2088a compatible strings (Xiaowei Bao) - Update layerscape MSI/MSI-X management (Xiaowei Bao) - Use doorbell to support MSI-X on layerscape (Xiaowei Bao) - Add layerscape endpoint mode support for ls1088a and ls2088a (Xiaowei Bao) - Add layerscape ls1088a node to DT (Xiaowei Bao) - Add Freescale/Layerscape ls1088a to endpoint test (Xiaowei Bao) - Add endpoint test driver data for Layerscape PCIe controllers (Hou Zhiqiang) - Fix 'cast truncates bits from constant value' warning (Gustavo Pimentel) - Add uniphier iATU register description (Kunihiko Hayashi) - Add common iATU register support (Kunihiko Hayashi) - Remove keystone iATU register mapping in favor of generic dwc support (Kunihiko Hayashi) - Skip PCIE_MSI_INTR0* programming if MSI is disabled (Jisheng Zhang) - Fix MSI page leakage in suspend/resume (Jisheng Zhang) - Check whether link is up before attempting config access (best-effort fix even though it's racy) (Hou Zhiqiang) * remotes/lorenzo/pci/dwc: PCI: dwc: Add link up check in dw_child_pcie_ops.map_bus() PCI: dwc: Fix MSI page leakage in suspend/resume PCI: dwc: Skip PCIE_MSI_INTR0* programming if MSI is disabled PCI: keystone: Remove iATU register mapping PCI: dwc: Add common iATU register support dt-bindings: PCI: uniphier-ep: Add iATU register description dt-bindings: PCI: uniphier: Add iATU register description PCI: dwc: Fix 'cast truncates bits from constant value' misc: pci_endpoint_test: Add driver data for Layerscape PCIe controllers misc: pci_endpoint_test: Add LS1088a in pci_device_id table PCI: layerscape: Add EP mode support for ls1088a and ls2088a PCI: layerscape: Modify the MSIX to the doorbell mode PCI: layerscape: Modify the way of getting capability with different PEX PCI: layerscape: Fix some format issue of the code dt-bindings: pci: layerscape-pci: Add compatible strings for ls1088a and ls2088a PCI: designware-ep: Modify MSI and MSIX CAP way of finding PCI: designware-ep: Move the function of getting MSI capability forward PCI: designware-ep: Add the doorbell mode of MSI-X in EP mode PCI: designware-ep: Add multiple PFs support for DWC PCI: dwc: Use DBI accessors PCI: dwc: Move N_FTS setup to common setup PCI: dwc/intel-gw: Drop unused max_width PCI: dwc/intel-gw: Move getting PCI_CAP_ID_EXP offset to intel_pcie_link_setup() PCI: dwc/intel-gw: Drop unnecessary checking of DT 'device_type' property PCI: dwc: Set PORT_LINK_DLL_LINK_EN in common setup code PCI: dwc: Centralize link gen setting PCI: dwc: Make ATU accessors private PCI: dwc: Remove read_dbi2 code PCI: dwc/tegra: Use common Designware port logic register definitions PCI: dwc: Remove hardcoded PCI_CAP_ID_EXP offset PCI: dwc/qcom: Use common PCI register definitions PCI: dwc/imx6: Use common PCI register definitions PCI: dwc/meson: Rework PCI config and DW port logic register accesses PCI: dwc/meson: Drop unnecessary RC config space initialization PCI: dwc/meson: Drop the duplicate number of lanes setup PCI: dwc: Ensure FAST_LINK_MODE is cleared PCI: dwc: Add a 'num_lanes' field to struct dw_pcie PCI: dwc/imx6: Remove duplicate define PCIE_LINK_WIDTH_SPEED_CONTROL PCI: dwc: Check CONFIG_PCI_MSI inside dw_pcie_msi_init() PCI: dwc/keystone: Drop duplicated 'num-viewport' PCI: dwc: Simplify config space handling PCI: dwc: Remove storing of PCI resources PCI: dwc: Remove root_bus pointer PCI: dwc: Convert to use pci_host_probe() PCI: dwc: keystone: Convert .scan_bus() callback to use add_bus PCI: Also call .add_bus() callback for root bus PCI: dwc: Use generic config accessors PCI: dwc: Remove dwc specific config accessor ops PCI: dwc: histb: Use pci_ops for root config space accessors PCI: dwc: exynos: Use pci_ops for root config space accessors PCI: dwc: kirin: Use pci_ops for root config space accessors PCI: dwc: meson: Use pci_ops for root config space accessors PCI: dwc: tegra: Use pci_ops for root config space accessors PCI: dwc: keystone: Use pci_ops for config space accessors PCI: dwc: al: Use pci_ops for child config space accessors PCI: dwc: Add a default pci_ops.map_bus for root port PCI: dwc: Allow overriding bridge pci_ops PCI: dwc: Use DBI accessors instead of own config accessors PCI: Allow root and child buses to have different pci_ops PCI: designware-ep: Fix the Header Type check
2020-10-21Merge branch 'pci/pm'Bjorn Helgaas
- Remove unused pcibios_pm_ops (Vaibhav Gupta) - Rename pci_dev.d3_delay to d3hot_delay (Krzysztof Wilczyński) - Apply D2 transition delay as microseconds, not milliseconds (Bjorn Helgaas) * pci/pm: PCI/PM: Revert "PCI/PM: Apply D2 delay as milliseconds, not microseconds" PCI/PM: Remove unused PCI_PM_BUS_WAIT PCI/PM: Rename pci_dev.d3_delay to d3hot_delay PCI/PM: Remove unused pcibios_pm_ops
2020-10-16PCI/ASPM: Remove struct aspm_register_info.l1ss_cap_ptrSaheed O. Bolarinwa
Save the L1 Substates Capability pointer in struct pci_dev. Then we don't have to keep track of it in the struct aspm_register_info and struct pcie_link_state, which makes the code easier to read. No functional change intended. [bhelgaas: split to a separate patch] Link: https://lore.kernel.org/r/20201015193039.12585-8-helgaas@kernel.org Signed-off-by: Saheed O. Bolarinwa <refactormyself@gmail.com> Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
2020-09-29PCI/PM: Rename pci_dev.d3_delay to d3hot_delayKrzysztof Wilczyński
PCI devices support two variants of the D3 power state: D3hot (main power present) D3cold (main power removed). Previously struct pci_dev contained: unsigned int d3_delay; /* D3->D0 transition time in ms */ unsigned int d3cold_delay; /* D3cold->D0 transition time in ms */ "d3_delay" refers specifically to the D3hot state. Rename it to "d3hot_delay" to avoid ambiguity and align with the ACPI "_DSM for Specifying Device Readiness Durations" in the PCI Firmware spec r3.2, sec 4.6.9. There is no change to the functionality. Link: https://lore.kernel.org/r/20200730210848.1578826-1-kw@linux.com Signed-off-by: Krzysztof Wilczyński <kw@linux.com> Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
2020-09-29PCI/PM: Remove unused pcibios_pm_opsVaibhav Gupta
The "struct dev_pm_ops pcibios_pm_ops", declared in include/linux/pci.h and defined in drivers/pci/pci-driver.c, provided arch-specific hooks when a PCI device was doing a hibernate transition. 394216275c7d ("s390: remove broken hibernate / power management support") removed the last use of pcibios_pm_ops, so remove it completely. [bhelgaas: drop unused "error"] Link: https://lore.kernel.org/r/20200730194416.1029509-1-vaibhavgupta40@gmail.com Reported-by: Bjorn Helgaas <helgaas@kernel.org> Signed-off-by: Vaibhav Gupta <vaibhavgupta40@gmail.com> Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
2020-09-21PCI/IOV: Mark VFs as not implementing PCI_COMMAND_MEMORYMatthew Rosato
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 <mjrosato@linux.ibm.com> Acked-by: Bjorn Helgaas <bhelgaas@google.com> Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
2020-09-07PCI: Allow root and child buses to have different pci_opsRob Herring
PCI host bridges often have different ways to access the root and child bus config spaces. The host bridge drivers have invented their own abstractions to handle this. Let's support having different root and child bus pci_ops so these per driver abstractions can be removed. Link: https://lore.kernel.org/r/20200821035420.380495-2-robh@kernel.org Signed-off-by: Rob Herring <robh@kernel.org> Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com> Cc: Bjorn Helgaas <bhelgaas@google.com>
2020-08-07Merge tag 'pci-v5.9-changes' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci Pull PCI updates from Bjorn Helgaas: "Enumeration: - Fix pci_cfg_wait queue locking problem (Bjorn Helgaas) - Convert PCIe capability PCIBIOS errors to errno (Bolarinwa Olayemi Saheed) - Align PCIe capability and PCI accessor return values (Bolarinwa Olayemi Saheed) - Fix pci_create_slot() reference count leak (Qiushi Wu) - Announce device after early fixups (Tiezhu Yang) PCI device hotplug: - Make rpadlpar functions static (Wei Yongjun) Driver binding: - Add device even if driver attach failed (Rajat Jain) Virtualization: - xen: Remove redundant initialization of irq (Colin Ian King) IOMMU: - Add pci_pri_supported() to check device or associated PF (Ashok Raj) - Release IVRS table in AMD ACS quirk (Hanjun Guo) - Mark AMD Navi10 GPU rev 0x00 ATS as broken (Kai-Heng Feng) - Treat "external-facing" devices themselves as internal (Rajat Jain) MSI: - Forward MSI-X error code in pci_alloc_irq_vectors_affinity() (Piotr Stankiewicz) Error handling: - Clear PCIe Device Status errors only if OS owns AER (Jonathan Cameron) - Log correctable errors as warning, not error (Matt Jolly) - Use 'pci_channel_state_t' instead of 'enum pci_channel_state' (Luc Van Oostenryck) Peer-to-peer DMA: - Allow P2PDMA on AMD Zen and newer CPUs (Logan Gunthorpe) ASPM: - Add missing newline in sysfs 'policy' (Xiongfeng Wang) Native PCIe controllers: - Convert to devm_platform_ioremap_resource_byname() (Dejin Zheng) - Convert to devm_platform_ioremap_resource() (Dejin Zheng) - Remove duplicate error message from devm_pci_remap_cfg_resource() callers (Dejin Zheng) - Fix runtime PM imbalance on error (Dinghao Liu) - Remove dev_err() when handing an error from platform_get_irq() (Krzysztof Wilczyński) - Use pci_host_bridge.windows list directly instead of splicing in a temporary list for cadence, mvebu, host-common (Rob Herring) - Use pci_host_probe() instead of open-coding all the pieces for altera, brcmstb, iproc, mobiveil, rcar, rockchip, tegra, v3, versatile, xgene, xilinx, xilinx-nwl (Rob Herring) - Default host bridge parent device to the platform device (Rob Herring) - Use pci_is_root_bus() instead of tracking root bus number separately in aardvark, designware (imx6, keystone, designware-host), mobiveil, xilinx-nwl, xilinx, rockchip, rcar (Rob Herring) - Set host bridge bus number in pci_scan_root_bus_bridge() instead of each driver for aardvark, designware-host, host-common, mediatek, rcar, tegra, v3-semi (Rob Herring) - Move DT resource setup into devm_pci_alloc_host_bridge() (Rob Herring) - Set bridge map_irq and swizzle_irq to default functions; drivers that don't support legacy IRQs (iproc) need to undo this (Rob Herring) ARM Versatile PCIe controller driver: - Drop flag PCI_ENABLE_PROC_DOMAINS (Rob Herring) Cadence PCIe controller driver: - Use "dma-ranges" instead of "cdns,no-bar-match-nbits" property (Kishon Vijay Abraham I) - Remove "mem" from reg binding (Kishon Vijay Abraham I) - Fix cdns_pcie_{host|ep}_setup() error path (Kishon Vijay Abraham I) - Convert all r/w accessors to perform only 32-bit accesses (Kishon Vijay Abraham I) - Add support to start link and verify link status (Kishon Vijay Abraham I) - Allow pci_host_bridge to have custom pci_ops (Kishon Vijay Abraham I) - Add new *ops* for CPU addr fixup (Kishon Vijay Abraham I) - Fix updating Vendor ID and Subsystem Vendor ID register (Kishon Vijay Abraham I) - Use bridge resources for outbound window setup (Rob Herring) - Remove private bus number and range storage (Rob Herring) Cadence PCIe endpoint driver: - Add MSI-X support (Alan Douglas) HiSilicon PCIe controller driver: - Remove non-ECAM HiSilicon hip05/hip06 driver (Rob Herring) Intel VMD host bridge driver: - Use Shadow MEMBAR registers for QEMU/KVM guests (Jon Derrick) Loongson PCIe controller driver: - Use DECLARE_PCI_FIXUP_EARLY for bridge_class_quirk() (Tiezhu Yang) Marvell Aardvark PCIe controller driver: - Indicate error in 'val' when config read fails (Pali Rohár) - Don't touch PCIe registers if no card connected (Pali Rohár) Marvell MVEBU PCIe controller driver: - Setup BAR0 in order to fix MSI (Shmuel Hazan) Microsoft Hyper-V host bridge driver: - Fix a timing issue which causes kdump to fail occasionally (Wei Hu) - Make some functions static (Wei Yongjun) NVIDIA Tegra PCIe controller driver: - Revert tegra124 raw_violation_fixup (Nicolas Chauvet) - Remove PLL power supplies (Thierry Reding) Qualcomm PCIe controller driver: - Change duplicate PCI reset to phy reset (Abhishek Sahu) - Add missing ipq806x clocks in PCIe driver (Ansuel Smith) - Add missing reset for ipq806x (Ansuel Smith) - Add ext reset (Ansuel Smith) - Use bulk clk API and assert on error (Ansuel Smith) - Add support for tx term offset for rev 2.1.0 (Ansuel Smith) - Define some PARF params needed for ipq8064 SoC (Ansuel Smith) - Add ipq8064 rev2 variant (Ansuel Smith) - Support PCI speed set for ipq806x (Sham Muthayyan) Renesas R-Car PCIe controller driver: - Use devm_pci_alloc_host_bridge() (Rob Herring) - Use struct pci_host_bridge.windows list directly (Rob Herring) - Convert rcar-gen2 to use modern host bridge probe functions (Rob Herring) TI J721E PCIe driver: - Add TI J721E PCIe host and endpoint driver (Kishon Vijay Abraham I) Xilinx Versal CPM PCIe controller driver: - Add Versal CPM Root Port driver and YAML schema (Bharat Kumar Gogada) MicroSemi Switchtec management driver: - Add missing __iomem and __user tags to fix sparse warnings (Logan Gunthorpe) Miscellaneous: - Replace http:// links with https:// (Alexander A. Klimov) - Replace lkml.org, spinics, gmane with lore.kernel.org (Bjorn Helgaas) - Remove unused pci_lost_interrupt() (Heiner Kallweit) - Move PCI_VENDOR_ID_REDHAT definition to pci_ids.h (Huacai Chen) - Fix kerneldoc warnings (Krzysztof Kozlowski)" * tag 'pci-v5.9-changes' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci: (113 commits) PCI: Fix kerneldoc warnings PCI: xilinx-cpm: Add Versal CPM Root Port driver PCI: xilinx-cpm: Add YAML schemas for Versal CPM Root Port PCI: Set bridge map_irq and swizzle_irq to default functions PCI: Move DT resource setup into devm_pci_alloc_host_bridge() PCI: rcar-gen2: Convert to use modern host bridge probe functions PCI: Remove dev_err() when handing an error from platform_get_irq() MAINTAINERS: Add Kishon Vijay Abraham I for TI J721E SoC PCIe misc: pci_endpoint_test: Add J721E in pci_device_id table PCI: j721e: Add TI J721E PCIe driver PCI: switchtec: Add missing __iomem tag to fix sparse warnings PCI: switchtec: Add missing __iomem and __user tags to fix sparse warnings PCI: rpadlpar: Make functions static PCI/P2PDMA: Allow P2PDMA on AMD Zen and newer CPUs PCI: Release IVRS table in AMD ACS quirk PCI: Announce device after early fixups PCI: Mark AMD Navi10 GPU rev 0x00 ATS as broken PCI: Remove unused pci_lost_interrupt() dt-bindings: PCI: Add EP mode dt-bindings for TI's J721E SoC dt-bindings: PCI: Add host mode dt-bindings for TI's J721E SoC ...
2020-08-05Merge branch 'pci/host-probe-refactor'Bjorn Helgaas
- Use pci_host_bridge.windows list directly instead of splicing in a temporary list for cadence, mvebu, host-common (Rob Herring) - Use pci_host_probe() instead of open-coding all the pieces for altera, brcmstb, iproc, mobiveil, rcar, rockchip, tegra, v3, versatile, xgene, xilinx, xilinx-nwl (Rob Herring) - Convert to devm_platform_ioremap_resource_byname() instead of open-coding platform_get_resource_byname() and devm_ioremap_resource() for altera, cadence, mediatek, rockchip, tegra, xgene (Dejin Zheng) - Convert to devm_platform_ioremap_resource() instead of open-coding platform_get_resource() and devm_ioremap_resource() for aardvark, brcmstb, exynos, ftpci100, versatile (Dejin Zheng) - Remove redundant error messages from devm_pci_remap_cfg_resource() callers (Dejin Zheng) - Drop useless PCI_ENABLE_PROC_DOMAINS from versatile driver (Rob Herring) - Default host bridge parent device to the platform device (Rob Herring) - Drop unnecessary zeroing of host bridge fields (Rob Herring) - Use pci_is_root_bus() instead of tracking root bus number separately in aardvark, designware (imx6, keystone, designware-host), mobiveil, xilinx-nwl, xilinx, rockchip, rcar (Rob Herring) - Set host bridge bus number in pci_scan_root_bus_bridge() instead of each driver for aardvark, designware-host, host-common, mediatek, rcar, tegra, v3-semi (Rob Herring) - Use bridge resources instead of parsing DT 'ranges' again for cadence (Rob Herring) - Remove private bus number and range from cadence (Rob Herring) - Use devm_pci_alloc_host_bridge() to simplify rcar (Rob Herring) - Use struct pci_host_bridge.windows list directly rather than a temporary (Rob Herring) - Reduce OF "missing non-prefetchable window" from error to warning message (Rob Herring) - Convert rcar-gen2 from old Arm-specific pci_common_init_dev() to new arch-independent interfaces (Rob Herring) - Move DT resource setup into devm_pci_alloc_host_bridge() (Rob Herring) - Set bridge map_irq and swizzle_irq to default functions; drivers that don't support legacy IRQs (iproc) need to undo this (Rob Herring) * pci/host-probe-refactor: PCI: Set bridge map_irq and swizzle_irq to default functions PCI: Move DT resource setup into devm_pci_alloc_host_bridge() PCI: rcar-gen2: Convert to use modern host bridge probe functions PCI: of: Reduce missing non-prefetchable memory region to a warning PCI: rcar: Use struct pci_host_bridge.windows list directly PCI: rcar: Use devm_pci_alloc_host_bridge() PCI: cadence: Remove private bus number and range storage PCI: cadence: Use bridge resources for outbound window setup PCI: Move setting pci_host_bridge.busnr out of host drivers PCI: rcar: Use pci_is_root_bus() to check if bus is root bus PCI: rockchip: Use pci_is_root_bus() to check if bus is root bus PCI: xilinx: Use pci_is_root_bus() to check if bus is root bus PCI: xilinx-nwl: Use pci_is_root_bus() to check if bus is root bus PCI: mobiveil: Use pci_is_root_bus() to check if bus is root bus PCI: designware: Use pci_is_root_bus() to check if bus is root bus PCI: aardvark: Use pci_is_root_bus() to check if bus is root bus PCI: Drop unnecessary zeroing of bridge fields PCI: Set default bridge parent device PCI: versatile: Drop flag PCI_ENABLE_PROC_DOMAINS PCI: controller: Remove duplicate error message PCI: controller: Convert to devm_platform_ioremap_resource() PCI: controller: Convert to devm_platform_ioremap_resource_byname() PCI: xilinx: Use pci_host_probe() to register host PCI: xilinx-nwl: Use pci_host_probe() to register host PCI: rockchip: Use pci_host_probe() to register host PCI: rcar: Use pci_host_probe() to register host PCI: iproc: Use pci_host_probe() to register host PCI: altera: Use pci_host_probe() to register host PCI: xgene: Use pci_host_probe() to register host PCI: versatile: Use pci_host_probe() to register host PCI: v3: Use pci_host_probe() to register host PCI: tegra: Use pci_host_probe() to register host PCI: mobiveil: Use pci_host_probe() to register host PCI: brcmstb: Use pci_host_probe() to register host PCI: host-common: Use struct pci_host_bridge.windows list directly PCI: mvebu: Use struct pci_host_bridge.windows list directly PCI: cadence: Use struct pci_host_bridge.windows list directly # Conflicts: # drivers/pci/controller/cadence/pcie-cadence-host.c
2020-08-05Merge branch 'pci/misc'Bjorn Helgaas
- Convert PCIe capability PCIBIOS errors to errno (Bolarinwa Olayemi Saheed) - Align PCIe capability and PCI accessor return values (Bolarinwa Olayemi Saheed) - Replace http:// links with https:// (Alexander A. Klimov) - Replace lkml.org, spinics, gmane with lore.kernel.org (Bjorn Helgaas) - Update panic message to mention kzalloc(), not kmalloc() (Liao Pingfang) - Move PCI_VENDOR_ID_REDHAT definition to pci_ids.h (Huacai Chen) - Remove unused pci_lost_interrupt() (Heiner Kallweit) * pci/misc: PCI: Remove unused pci_lost_interrupt() PCI: Move PCI_VENDOR_ID_REDHAT definition to pci_ids.h PCI: Fix error in panic message PCI: Replace lkml.org, spinics, gmane with lore.kernel.org PCI: Replace http:// links with https:// PCI: Align PCIe capability and PCI accessor return values PCI: Convert PCIe capability PCIBIOS errors to errno
2020-08-05Merge branch 'pci/error'Bjorn Helgaas
- Use pci_channel_state_t instead of enum pci_channel_state (Luc Van Oostenryck) - Simplify __aer_print_error() (Bjorn Helgaas) - Log AER correctable errors as warning, not error (Matt Jolly) - Rename pci_aer_clear_device_status() to pcie_clear_device_status() (Bjorn Helgaas) - Clear PCIe Device Status errors only if OS owns AER (Jonathan Cameron) * pci/error: PCI/ERR: Clear PCIe Device Status errors only if OS owns AER PCI/ERR: Rename pci_aer_clear_device_status() to pcie_clear_device_status() PCI/AER: Log correctable errors as warning, not error PCI/AER: Simplify __aer_print_error() PCI: Use 'pci_channel_state_t' instead of 'enum pci_channel_state'
2020-08-04PCI: Move DT resource setup into devm_pci_alloc_host_bridge()Rob Herring
Now that pci_parse_request_of_pci_ranges() callers just setup pci_host_bridge.windows and dma_ranges directly and don't need the bus range returned, we can just initialize them when allocating the pci_host_bridge struct. With this, pci_parse_request_of_pci_ranges() becomes a static function. Link: https://lore.kernel.org/r/20200722022514.1283916-19-robh@kernel.org Signed-off-by: Rob Herring <robh@kernel.org> Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com> Acked-by: Bjorn Helgaas <bhelgaas@google.com> Cc: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com> Cc: Bjorn Helgaas <bhelgaas@google.com>
2020-07-29PCI: Remove unused pci_lost_interrupt()Heiner Kallweit
388c8c16abaf ("PCI: add routines for debugging and handling lost interrupts") added pci_lost_interrupt() that apparently never has had a single user. Remove it. Link: https://lore.kernel.org/r/e328d059-3068-6a40-28df-f81f616d15a0@gmail.com Signed-off-by: Heiner Kallweit <hkallweit1@gmail.com> Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
2020-07-10PCI: Treat "external-facing" devices themselves as internalRajat Jain
"External-facing" devices are internal devices that expose PCIe hierarchies such as Thunderbolt outside the platform [1]. Previously these internal devices were marked as "untrusted" the same as devices downstream from them. Use the ACPI or DT information to identify external-facing devices, but only mark the devices *downstream* from them as "untrusted" [2]. The external-facing device itself is no longer marked as untrusted. [1] https://docs.microsoft.com/en-us/windows-hardware/drivers/pci/dsd-for-pcie-root-ports#identifying-externally-exposed-pcie-root-ports [2] https://lore.kernel.org/linux-pci/20200610230906.GA1528594@bjorn-Precision-5520/ Link: https://lore.kernel.org/r/20200707224604.3737893-3-rajatja@google.com Signed-off-by: Rajat Jain <rajatja@google.com> Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
2020-07-10PCI: Cache ACS capability offset in deviceRajat Jain
Currently the ACS capability is being looked up at a number of places. Read and store it once at enumeration so that it can be used by all later. No functional change intended. Link: https://lore.kernel.org/r/20200707224604.3737893-2-rajatja@google.com Signed-off-by: Rajat Jain <rajatja@google.com> Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
generated by cgit (git 2.34.1) at 2024-05-27 07:58:26 +0000