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![Linus Torvalds](/assets/img/avatar_default.png)
-----BEGIN PGP SIGNATURE----- iQJIBAABCgAyFiEEgMe7l+5h9hnxdsnuWYigwDrT+vwFAmCRp48UHGJoZWxnYWFz QGdvb2dsZS5jb20ACgkQWYigwDrT+vwsVRAAsIYueNKzZczpkeQwHigYzf4HLdKm yyT2c/Zlj9REAUOe7ApkowVAJWiMGDJP0J361KIluAGvAxnkMP1V6WlVdByorYd0 CrXc/UhD//cs+3QDo4SmJRHyL8q5QQTDa8Z/8seVJUYTR/t5OhSpMOuEJPhpeQ1s nqUk0yWNJRoN6wn6T/7KqgYEvPhARXo9epuWy5MNPZ5f8E7SRi/QG/6hP8/YOLpK A+8beIOX5LAvUJaXxEovwv5UQnSUkeZTGDyRietQYE6xXNeHPKCvZ7vDjjSE7NOW mIodD6JcG3n/riYV3sMA5PKDZgsPI3P/qJU6Y6vWBBYOaO/kQX/c7CZ+M2bcZay4 mh1dW0vOqoTy/pAVwQB2aq08Rrg2SAskpNdeyzduXllmuTyuwCMPXzG4RKmbQ8I1 qMFb8qOyNulRAWcTKgSMKByEQYASQsFA5yShtaba6h0+vqrseuP6hchBKKOEan8F 9THTI3ZflKwRvGjkI0MDbp0z0+wPYmNhrcZDpAJ3bEltw58E8TL/9aBtuhajmo8+ wJ64mZclFuMmSyhsfkAXOvjeKXMlEBaw7vinZGbcACmv4ZGI0MV7r4vVYQbQltcy myzB6xJxcWB8N07UpKpUbsGMb9JjTUPlaT36eZNvUZQDntrE1ljt8RSq3nphDrcD KmBRU8ru74I2RE0= =WvTD -----END PGP SIGNATURE----- Merge tag 'pci-v5.13-changes' of 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 ...
711 lines
22 KiB
C
711 lines
22 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
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#ifndef DRIVERS_PCI_H
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#define DRIVERS_PCI_H
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#include <linux/pci.h>
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/* Number of possible devfns: 0.0 to 1f.7 inclusive */
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#define MAX_NR_DEVFNS 256
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#define PCI_FIND_CAP_TTL 48
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#define PCI_VSEC_ID_INTEL_TBT 0x1234 /* Thunderbolt */
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extern const unsigned char pcie_link_speed[];
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extern bool pci_early_dump;
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bool pcie_cap_has_lnkctl(const struct pci_dev *dev);
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bool pcie_cap_has_rtctl(const struct pci_dev *dev);
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/* Functions internal to the PCI core code */
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int pci_create_sysfs_dev_files(struct pci_dev *pdev);
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void pci_remove_sysfs_dev_files(struct pci_dev *pdev);
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void pci_cleanup_rom(struct pci_dev *dev);
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#ifdef CONFIG_DMI
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extern const struct attribute_group pci_dev_smbios_attr_group;
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#endif
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enum pci_mmap_api {
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PCI_MMAP_SYSFS, /* mmap on /sys/bus/pci/devices/<BDF>/resource<N> */
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PCI_MMAP_PROCFS /* mmap on /proc/bus/pci/<BDF> */
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};
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int pci_mmap_fits(struct pci_dev *pdev, int resno, struct vm_area_struct *vmai,
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enum pci_mmap_api mmap_api);
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int pci_probe_reset_function(struct pci_dev *dev);
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int pci_bridge_secondary_bus_reset(struct pci_dev *dev);
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int pci_bus_error_reset(struct pci_dev *dev);
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#define PCI_PM_D2_DELAY 200 /* usec; see PCIe r4.0, sec 5.9.1 */
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#define PCI_PM_D3HOT_WAIT 10 /* msec */
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#define PCI_PM_D3COLD_WAIT 100 /* msec */
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/**
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* struct pci_platform_pm_ops - Firmware PM callbacks
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*
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* @bridge_d3: Does the bridge allow entering into D3
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*
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* @is_manageable: returns 'true' if given device is power manageable by the
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* platform firmware
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*
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* @set_state: invokes the platform firmware to set the device's power state
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*
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* @get_state: queries the platform firmware for a device's current power state
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*
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* @refresh_state: asks the platform to refresh the device's power state data
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*
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* @choose_state: returns PCI power state of given device preferred by the
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* platform; to be used during system-wide transitions from a
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* sleeping state to the working state and vice versa
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*
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* @set_wakeup: enables/disables wakeup capability for the device
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*
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* @need_resume: returns 'true' if the given device (which is currently
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* suspended) needs to be resumed to be configured for system
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* wakeup.
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*
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* If given platform is generally capable of power managing PCI devices, all of
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* these callbacks are mandatory.
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*/
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struct pci_platform_pm_ops {
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bool (*bridge_d3)(struct pci_dev *dev);
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bool (*is_manageable)(struct pci_dev *dev);
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int (*set_state)(struct pci_dev *dev, pci_power_t state);
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pci_power_t (*get_state)(struct pci_dev *dev);
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void (*refresh_state)(struct pci_dev *dev);
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pci_power_t (*choose_state)(struct pci_dev *dev);
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int (*set_wakeup)(struct pci_dev *dev, bool enable);
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bool (*need_resume)(struct pci_dev *dev);
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};
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int pci_set_platform_pm(const struct pci_platform_pm_ops *ops);
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void pci_update_current_state(struct pci_dev *dev, pci_power_t state);
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void pci_refresh_power_state(struct pci_dev *dev);
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int pci_power_up(struct pci_dev *dev);
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void pci_disable_enabled_device(struct pci_dev *dev);
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int pci_finish_runtime_suspend(struct pci_dev *dev);
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void pcie_clear_device_status(struct pci_dev *dev);
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void pcie_clear_root_pme_status(struct pci_dev *dev);
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bool pci_check_pme_status(struct pci_dev *dev);
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void pci_pme_wakeup_bus(struct pci_bus *bus);
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int __pci_pme_wakeup(struct pci_dev *dev, void *ign);
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void pci_pme_restore(struct pci_dev *dev);
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bool pci_dev_need_resume(struct pci_dev *dev);
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void pci_dev_adjust_pme(struct pci_dev *dev);
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void pci_dev_complete_resume(struct pci_dev *pci_dev);
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void pci_config_pm_runtime_get(struct pci_dev *dev);
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void pci_config_pm_runtime_put(struct pci_dev *dev);
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void pci_pm_init(struct pci_dev *dev);
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void pci_ea_init(struct pci_dev *dev);
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void pci_msi_init(struct pci_dev *dev);
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void pci_msix_init(struct pci_dev *dev);
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void pci_allocate_cap_save_buffers(struct pci_dev *dev);
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void pci_free_cap_save_buffers(struct pci_dev *dev);
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bool pci_bridge_d3_possible(struct pci_dev *dev);
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void pci_bridge_d3_update(struct pci_dev *dev);
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void pci_bridge_wait_for_secondary_bus(struct pci_dev *dev);
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static inline void pci_wakeup_event(struct pci_dev *dev)
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{
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/* Wait 100 ms before the system can be put into a sleep state. */
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pm_wakeup_event(&dev->dev, 100);
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}
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static inline bool pci_has_subordinate(struct pci_dev *pci_dev)
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{
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return !!(pci_dev->subordinate);
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}
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static inline bool pci_power_manageable(struct pci_dev *pci_dev)
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{
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/*
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* Currently we allow normal PCI devices and PCI bridges transition
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* into D3 if their bridge_d3 is set.
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*/
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return !pci_has_subordinate(pci_dev) || pci_dev->bridge_d3;
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}
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static inline bool pcie_downstream_port(const struct pci_dev *dev)
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{
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int type = pci_pcie_type(dev);
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return type == PCI_EXP_TYPE_ROOT_PORT ||
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type == PCI_EXP_TYPE_DOWNSTREAM ||
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type == PCI_EXP_TYPE_PCIE_BRIDGE;
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}
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void pci_vpd_init(struct pci_dev *dev);
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void pci_vpd_release(struct pci_dev *dev);
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extern const struct attribute_group pci_dev_vpd_attr_group;
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/* PCI Virtual Channel */
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int pci_save_vc_state(struct pci_dev *dev);
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void pci_restore_vc_state(struct pci_dev *dev);
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void pci_allocate_vc_save_buffers(struct pci_dev *dev);
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/* PCI /proc functions */
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#ifdef CONFIG_PROC_FS
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int pci_proc_attach_device(struct pci_dev *dev);
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int pci_proc_detach_device(struct pci_dev *dev);
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int pci_proc_detach_bus(struct pci_bus *bus);
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#else
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static inline int pci_proc_attach_device(struct pci_dev *dev) { return 0; }
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static inline int pci_proc_detach_device(struct pci_dev *dev) { return 0; }
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static inline int pci_proc_detach_bus(struct pci_bus *bus) { return 0; }
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#endif
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/* Functions for PCI Hotplug drivers to use */
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int pci_hp_add_bridge(struct pci_dev *dev);
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#ifdef HAVE_PCI_LEGACY
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void pci_create_legacy_files(struct pci_bus *bus);
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void pci_remove_legacy_files(struct pci_bus *bus);
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#else
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static inline void pci_create_legacy_files(struct pci_bus *bus) { return; }
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static inline void pci_remove_legacy_files(struct pci_bus *bus) { return; }
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#endif
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/* Lock for read/write access to pci device and bus lists */
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extern struct rw_semaphore pci_bus_sem;
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extern struct mutex pci_slot_mutex;
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extern raw_spinlock_t pci_lock;
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extern unsigned int pci_pm_d3hot_delay;
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#ifdef CONFIG_PCI_MSI
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void pci_no_msi(void);
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#else
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static inline void pci_no_msi(void) { }
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#endif
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void pci_realloc_get_opt(char *);
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static inline int pci_no_d1d2(struct pci_dev *dev)
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{
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unsigned int parent_dstates = 0;
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if (dev->bus->self)
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parent_dstates = dev->bus->self->no_d1d2;
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return (dev->no_d1d2 || parent_dstates);
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}
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extern const struct attribute_group *pci_dev_groups[];
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extern const struct attribute_group *pcibus_groups[];
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extern const struct device_type pci_dev_type;
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extern const struct attribute_group *pci_bus_groups[];
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extern unsigned long pci_hotplug_io_size;
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extern unsigned long pci_hotplug_mmio_size;
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extern unsigned long pci_hotplug_mmio_pref_size;
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extern unsigned long pci_hotplug_bus_size;
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/**
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* pci_match_one_device - Tell if a PCI device structure has a matching
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* PCI device id structure
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* @id: single PCI device id structure to match
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* @dev: the PCI device structure to match against
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*
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* Returns the matching pci_device_id structure or %NULL if there is no match.
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*/
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static inline const struct pci_device_id *
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pci_match_one_device(const struct pci_device_id *id, const struct pci_dev *dev)
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{
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if ((id->vendor == PCI_ANY_ID || id->vendor == dev->vendor) &&
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(id->device == PCI_ANY_ID || id->device == dev->device) &&
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(id->subvendor == PCI_ANY_ID || id->subvendor == dev->subsystem_vendor) &&
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(id->subdevice == PCI_ANY_ID || id->subdevice == dev->subsystem_device) &&
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!((id->class ^ dev->class) & id->class_mask))
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return id;
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return NULL;
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}
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/* PCI slot sysfs helper code */
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#define to_pci_slot(s) container_of(s, struct pci_slot, kobj)
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extern struct kset *pci_slots_kset;
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struct pci_slot_attribute {
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struct attribute attr;
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ssize_t (*show)(struct pci_slot *, char *);
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ssize_t (*store)(struct pci_slot *, const char *, size_t);
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};
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#define to_pci_slot_attr(s) container_of(s, struct pci_slot_attribute, attr)
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enum pci_bar_type {
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pci_bar_unknown, /* Standard PCI BAR probe */
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pci_bar_io, /* An I/O port BAR */
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pci_bar_mem32, /* A 32-bit memory BAR */
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pci_bar_mem64, /* A 64-bit memory BAR */
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};
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struct device *pci_get_host_bridge_device(struct pci_dev *dev);
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void pci_put_host_bridge_device(struct device *dev);
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int pci_configure_extended_tags(struct pci_dev *dev, void *ign);
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bool pci_bus_read_dev_vendor_id(struct pci_bus *bus, int devfn, u32 *pl,
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int crs_timeout);
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bool pci_bus_generic_read_dev_vendor_id(struct pci_bus *bus, int devfn, u32 *pl,
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int crs_timeout);
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int pci_idt_bus_quirk(struct pci_bus *bus, int devfn, u32 *pl, int crs_timeout);
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int pci_setup_device(struct pci_dev *dev);
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int __pci_read_base(struct pci_dev *dev, enum pci_bar_type type,
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struct resource *res, unsigned int reg);
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void pci_configure_ari(struct pci_dev *dev);
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void __pci_bus_size_bridges(struct pci_bus *bus,
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struct list_head *realloc_head);
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void __pci_bus_assign_resources(const struct pci_bus *bus,
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struct list_head *realloc_head,
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struct list_head *fail_head);
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bool pci_bus_clip_resource(struct pci_dev *dev, int idx);
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void pci_reassigndev_resource_alignment(struct pci_dev *dev);
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void pci_disable_bridge_window(struct pci_dev *dev);
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struct pci_bus *pci_bus_get(struct pci_bus *bus);
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void pci_bus_put(struct pci_bus *bus);
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/* PCIe link information from Link Capabilities 2 */
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#define PCIE_LNKCAP2_SLS2SPEED(lnkcap2) \
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((lnkcap2) & PCI_EXP_LNKCAP2_SLS_64_0GB ? PCIE_SPEED_64_0GT : \
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(lnkcap2) & PCI_EXP_LNKCAP2_SLS_32_0GB ? PCIE_SPEED_32_0GT : \
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(lnkcap2) & PCI_EXP_LNKCAP2_SLS_16_0GB ? PCIE_SPEED_16_0GT : \
|
|
(lnkcap2) & PCI_EXP_LNKCAP2_SLS_8_0GB ? PCIE_SPEED_8_0GT : \
|
|
(lnkcap2) & PCI_EXP_LNKCAP2_SLS_5_0GB ? PCIE_SPEED_5_0GT : \
|
|
(lnkcap2) & PCI_EXP_LNKCAP2_SLS_2_5GB ? PCIE_SPEED_2_5GT : \
|
|
PCI_SPEED_UNKNOWN)
|
|
|
|
/* PCIe speed to Mb/s reduced by encoding overhead */
|
|
#define PCIE_SPEED2MBS_ENC(speed) \
|
|
((speed) == PCIE_SPEED_64_0GT ? 64000*128/130 : \
|
|
(speed) == PCIE_SPEED_32_0GT ? 32000*128/130 : \
|
|
(speed) == PCIE_SPEED_16_0GT ? 16000*128/130 : \
|
|
(speed) == PCIE_SPEED_8_0GT ? 8000*128/130 : \
|
|
(speed) == PCIE_SPEED_5_0GT ? 5000*8/10 : \
|
|
(speed) == PCIE_SPEED_2_5GT ? 2500*8/10 : \
|
|
0)
|
|
|
|
const char *pci_speed_string(enum pci_bus_speed speed);
|
|
enum pci_bus_speed pcie_get_speed_cap(struct pci_dev *dev);
|
|
enum pcie_link_width pcie_get_width_cap(struct pci_dev *dev);
|
|
u32 pcie_bandwidth_capable(struct pci_dev *dev, enum pci_bus_speed *speed,
|
|
enum pcie_link_width *width);
|
|
void __pcie_print_link_status(struct pci_dev *dev, bool verbose);
|
|
void pcie_report_downtraining(struct pci_dev *dev);
|
|
void pcie_update_link_speed(struct pci_bus *bus, u16 link_status);
|
|
|
|
/* Single Root I/O Virtualization */
|
|
struct pci_sriov {
|
|
int pos; /* Capability position */
|
|
int nres; /* Number of resources */
|
|
u32 cap; /* SR-IOV Capabilities */
|
|
u16 ctrl; /* SR-IOV Control */
|
|
u16 total_VFs; /* Total VFs associated with the PF */
|
|
u16 initial_VFs; /* Initial VFs associated with the PF */
|
|
u16 num_VFs; /* Number of VFs available */
|
|
u16 offset; /* First VF Routing ID offset */
|
|
u16 stride; /* Following VF stride */
|
|
u16 vf_device; /* VF device ID */
|
|
u32 pgsz; /* Page size for BAR alignment */
|
|
u8 link; /* Function Dependency Link */
|
|
u8 max_VF_buses; /* Max buses consumed by VFs */
|
|
u16 driver_max_VFs; /* Max num VFs driver supports */
|
|
struct pci_dev *dev; /* Lowest numbered PF */
|
|
struct pci_dev *self; /* This PF */
|
|
u32 class; /* VF device */
|
|
u8 hdr_type; /* VF header type */
|
|
u16 subsystem_vendor; /* VF subsystem vendor */
|
|
u16 subsystem_device; /* VF subsystem device */
|
|
resource_size_t barsz[PCI_SRIOV_NUM_BARS]; /* VF BAR size */
|
|
bool drivers_autoprobe; /* Auto probing of VFs by driver */
|
|
};
|
|
|
|
/**
|
|
* pci_dev_set_io_state - Set the new error state if possible.
|
|
*
|
|
* @dev - pci device to set new error_state
|
|
* @new - the state we want dev to be in
|
|
*
|
|
* Must be called with device_lock held.
|
|
*
|
|
* Returns true if state has been changed to the requested state.
|
|
*/
|
|
static inline bool pci_dev_set_io_state(struct pci_dev *dev,
|
|
pci_channel_state_t new)
|
|
{
|
|
bool changed = false;
|
|
|
|
device_lock_assert(&dev->dev);
|
|
switch (new) {
|
|
case pci_channel_io_perm_failure:
|
|
switch (dev->error_state) {
|
|
case pci_channel_io_frozen:
|
|
case pci_channel_io_normal:
|
|
case pci_channel_io_perm_failure:
|
|
changed = true;
|
|
break;
|
|
}
|
|
break;
|
|
case pci_channel_io_frozen:
|
|
switch (dev->error_state) {
|
|
case pci_channel_io_frozen:
|
|
case pci_channel_io_normal:
|
|
changed = true;
|
|
break;
|
|
}
|
|
break;
|
|
case pci_channel_io_normal:
|
|
switch (dev->error_state) {
|
|
case pci_channel_io_frozen:
|
|
case pci_channel_io_normal:
|
|
changed = true;
|
|
break;
|
|
}
|
|
break;
|
|
}
|
|
if (changed)
|
|
dev->error_state = new;
|
|
return changed;
|
|
}
|
|
|
|
static inline int pci_dev_set_disconnected(struct pci_dev *dev, void *unused)
|
|
{
|
|
device_lock(&dev->dev);
|
|
pci_dev_set_io_state(dev, pci_channel_io_perm_failure);
|
|
device_unlock(&dev->dev);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static inline bool pci_dev_is_disconnected(const struct pci_dev *dev)
|
|
{
|
|
return dev->error_state == pci_channel_io_perm_failure;
|
|
}
|
|
|
|
/* pci_dev priv_flags */
|
|
#define PCI_DEV_ADDED 0
|
|
|
|
static inline void pci_dev_assign_added(struct pci_dev *dev, bool added)
|
|
{
|
|
assign_bit(PCI_DEV_ADDED, &dev->priv_flags, added);
|
|
}
|
|
|
|
static inline bool pci_dev_is_added(const struct pci_dev *dev)
|
|
{
|
|
return test_bit(PCI_DEV_ADDED, &dev->priv_flags);
|
|
}
|
|
|
|
#ifdef CONFIG_PCIEAER
|
|
#include <linux/aer.h>
|
|
|
|
#define AER_MAX_MULTI_ERR_DEVICES 5 /* Not likely to have more */
|
|
|
|
struct aer_err_info {
|
|
struct pci_dev *dev[AER_MAX_MULTI_ERR_DEVICES];
|
|
int error_dev_num;
|
|
|
|
unsigned int id:16;
|
|
|
|
unsigned int severity:2; /* 0:NONFATAL | 1:FATAL | 2:COR */
|
|
unsigned int __pad1:5;
|
|
unsigned int multi_error_valid:1;
|
|
|
|
unsigned int first_error:5;
|
|
unsigned int __pad2:2;
|
|
unsigned int tlp_header_valid:1;
|
|
|
|
unsigned int status; /* COR/UNCOR Error Status */
|
|
unsigned int mask; /* COR/UNCOR Error Mask */
|
|
struct aer_header_log_regs tlp; /* TLP Header */
|
|
};
|
|
|
|
int aer_get_device_error_info(struct pci_dev *dev, struct aer_err_info *info);
|
|
void aer_print_error(struct pci_dev *dev, struct aer_err_info *info);
|
|
#endif /* CONFIG_PCIEAER */
|
|
|
|
#ifdef CONFIG_PCIEPORTBUS
|
|
/* Cached RCEC Endpoint Association */
|
|
struct rcec_ea {
|
|
u8 nextbusn;
|
|
u8 lastbusn;
|
|
u32 bitmap;
|
|
};
|
|
#endif
|
|
|
|
#ifdef CONFIG_PCIE_DPC
|
|
void pci_save_dpc_state(struct pci_dev *dev);
|
|
void pci_restore_dpc_state(struct pci_dev *dev);
|
|
void pci_dpc_init(struct pci_dev *pdev);
|
|
void dpc_process_error(struct pci_dev *pdev);
|
|
pci_ers_result_t dpc_reset_link(struct pci_dev *pdev);
|
|
#else
|
|
static inline void pci_save_dpc_state(struct pci_dev *dev) {}
|
|
static inline void pci_restore_dpc_state(struct pci_dev *dev) {}
|
|
static inline void pci_dpc_init(struct pci_dev *pdev) {}
|
|
#endif
|
|
|
|
#ifdef CONFIG_PCIEPORTBUS
|
|
void pci_rcec_init(struct pci_dev *dev);
|
|
void pci_rcec_exit(struct pci_dev *dev);
|
|
void pcie_link_rcec(struct pci_dev *rcec);
|
|
void pcie_walk_rcec(struct pci_dev *rcec,
|
|
int (*cb)(struct pci_dev *, void *),
|
|
void *userdata);
|
|
#else
|
|
static inline void pci_rcec_init(struct pci_dev *dev) {}
|
|
static inline void pci_rcec_exit(struct pci_dev *dev) {}
|
|
static inline void pcie_link_rcec(struct pci_dev *rcec) {}
|
|
static inline void pcie_walk_rcec(struct pci_dev *rcec,
|
|
int (*cb)(struct pci_dev *, void *),
|
|
void *userdata) {}
|
|
#endif
|
|
|
|
#ifdef CONFIG_PCI_ATS
|
|
/* Address Translation Service */
|
|
void pci_ats_init(struct pci_dev *dev);
|
|
void pci_restore_ats_state(struct pci_dev *dev);
|
|
#else
|
|
static inline void pci_ats_init(struct pci_dev *d) { }
|
|
static inline void pci_restore_ats_state(struct pci_dev *dev) { }
|
|
#endif /* CONFIG_PCI_ATS */
|
|
|
|
#ifdef CONFIG_PCI_PRI
|
|
void pci_pri_init(struct pci_dev *dev);
|
|
void pci_restore_pri_state(struct pci_dev *pdev);
|
|
#else
|
|
static inline void pci_pri_init(struct pci_dev *dev) { }
|
|
static inline void pci_restore_pri_state(struct pci_dev *pdev) { }
|
|
#endif
|
|
|
|
#ifdef CONFIG_PCI_PASID
|
|
void pci_pasid_init(struct pci_dev *dev);
|
|
void pci_restore_pasid_state(struct pci_dev *pdev);
|
|
#else
|
|
static inline void pci_pasid_init(struct pci_dev *dev) { }
|
|
static inline void pci_restore_pasid_state(struct pci_dev *pdev) { }
|
|
#endif
|
|
|
|
#ifdef CONFIG_PCI_IOV
|
|
int pci_iov_init(struct pci_dev *dev);
|
|
void pci_iov_release(struct pci_dev *dev);
|
|
void pci_iov_remove(struct pci_dev *dev);
|
|
void pci_iov_update_resource(struct pci_dev *dev, int resno);
|
|
resource_size_t pci_sriov_resource_alignment(struct pci_dev *dev, int resno);
|
|
void pci_restore_iov_state(struct pci_dev *dev);
|
|
int pci_iov_bus_range(struct pci_bus *bus);
|
|
extern const struct attribute_group sriov_pf_dev_attr_group;
|
|
extern const struct attribute_group sriov_vf_dev_attr_group;
|
|
#else
|
|
static inline int pci_iov_init(struct pci_dev *dev)
|
|
{
|
|
return -ENODEV;
|
|
}
|
|
static inline void pci_iov_release(struct pci_dev *dev)
|
|
|
|
{
|
|
}
|
|
static inline void pci_iov_remove(struct pci_dev *dev)
|
|
{
|
|
}
|
|
static inline void pci_restore_iov_state(struct pci_dev *dev)
|
|
{
|
|
}
|
|
static inline int pci_iov_bus_range(struct pci_bus *bus)
|
|
{
|
|
return 0;
|
|
}
|
|
|
|
#endif /* CONFIG_PCI_IOV */
|
|
|
|
#ifdef CONFIG_PCIE_PTM
|
|
void pci_save_ptm_state(struct pci_dev *dev);
|
|
void pci_restore_ptm_state(struct pci_dev *dev);
|
|
void pci_disable_ptm(struct pci_dev *dev);
|
|
#else
|
|
static inline void pci_save_ptm_state(struct pci_dev *dev) { }
|
|
static inline void pci_restore_ptm_state(struct pci_dev *dev) { }
|
|
static inline void pci_disable_ptm(struct pci_dev *dev) { }
|
|
#endif
|
|
|
|
unsigned long pci_cardbus_resource_alignment(struct resource *);
|
|
|
|
static inline resource_size_t pci_resource_alignment(struct pci_dev *dev,
|
|
struct resource *res)
|
|
{
|
|
#ifdef CONFIG_PCI_IOV
|
|
int resno = res - dev->resource;
|
|
|
|
if (resno >= PCI_IOV_RESOURCES && resno <= PCI_IOV_RESOURCE_END)
|
|
return pci_sriov_resource_alignment(dev, resno);
|
|
#endif
|
|
if (dev->class >> 8 == PCI_CLASS_BRIDGE_CARDBUS)
|
|
return pci_cardbus_resource_alignment(res);
|
|
return resource_alignment(res);
|
|
}
|
|
|
|
void pci_acs_init(struct pci_dev *dev);
|
|
#ifdef CONFIG_PCI_QUIRKS
|
|
int pci_dev_specific_acs_enabled(struct pci_dev *dev, u16 acs_flags);
|
|
int pci_dev_specific_enable_acs(struct pci_dev *dev);
|
|
int pci_dev_specific_disable_acs_redir(struct pci_dev *dev);
|
|
#else
|
|
static inline int pci_dev_specific_acs_enabled(struct pci_dev *dev,
|
|
u16 acs_flags)
|
|
{
|
|
return -ENOTTY;
|
|
}
|
|
static inline int pci_dev_specific_enable_acs(struct pci_dev *dev)
|
|
{
|
|
return -ENOTTY;
|
|
}
|
|
static inline int pci_dev_specific_disable_acs_redir(struct pci_dev *dev)
|
|
{
|
|
return -ENOTTY;
|
|
}
|
|
#endif
|
|
|
|
/* PCI error reporting and recovery */
|
|
pci_ers_result_t pcie_do_recovery(struct pci_dev *dev,
|
|
pci_channel_state_t state,
|
|
pci_ers_result_t (*reset_subordinates)(struct pci_dev *pdev));
|
|
|
|
bool pcie_wait_for_link(struct pci_dev *pdev, bool active);
|
|
#ifdef CONFIG_PCIEASPM
|
|
void pcie_aspm_init_link_state(struct pci_dev *pdev);
|
|
void pcie_aspm_exit_link_state(struct pci_dev *pdev);
|
|
void pcie_aspm_pm_state_change(struct pci_dev *pdev);
|
|
void pcie_aspm_powersave_config_link(struct pci_dev *pdev);
|
|
#else
|
|
static inline void pcie_aspm_init_link_state(struct pci_dev *pdev) { }
|
|
static inline void pcie_aspm_exit_link_state(struct pci_dev *pdev) { }
|
|
static inline void pcie_aspm_pm_state_change(struct pci_dev *pdev) { }
|
|
static inline void pcie_aspm_powersave_config_link(struct pci_dev *pdev) { }
|
|
#endif
|
|
|
|
#ifdef CONFIG_PCIE_ECRC
|
|
void pcie_set_ecrc_checking(struct pci_dev *dev);
|
|
void pcie_ecrc_get_policy(char *str);
|
|
#else
|
|
static inline void pcie_set_ecrc_checking(struct pci_dev *dev) { }
|
|
static inline void pcie_ecrc_get_policy(char *str) { }
|
|
#endif
|
|
|
|
#ifdef CONFIG_PCIE_PTM
|
|
void pci_ptm_init(struct pci_dev *dev);
|
|
int pci_enable_ptm(struct pci_dev *dev, u8 *granularity);
|
|
#else
|
|
static inline void pci_ptm_init(struct pci_dev *dev) { }
|
|
static inline int pci_enable_ptm(struct pci_dev *dev, u8 *granularity)
|
|
{ return -EINVAL; }
|
|
#endif
|
|
|
|
struct pci_dev_reset_methods {
|
|
u16 vendor;
|
|
u16 device;
|
|
int (*reset)(struct pci_dev *dev, int probe);
|
|
};
|
|
|
|
#ifdef CONFIG_PCI_QUIRKS
|
|
int pci_dev_specific_reset(struct pci_dev *dev, int probe);
|
|
#else
|
|
static inline int pci_dev_specific_reset(struct pci_dev *dev, int probe)
|
|
{
|
|
return -ENOTTY;
|
|
}
|
|
#endif
|
|
|
|
#if defined(CONFIG_PCI_QUIRKS) && defined(CONFIG_ARM64)
|
|
int acpi_get_rc_resources(struct device *dev, const char *hid, u16 segment,
|
|
struct resource *res);
|
|
#else
|
|
static inline int acpi_get_rc_resources(struct device *dev, const char *hid,
|
|
u16 segment, struct resource *res)
|
|
{
|
|
return -ENODEV;
|
|
}
|
|
#endif
|
|
|
|
int pci_rebar_get_current_size(struct pci_dev *pdev, int bar);
|
|
int pci_rebar_set_size(struct pci_dev *pdev, int bar, int size);
|
|
static inline u64 pci_rebar_size_to_bytes(int size)
|
|
{
|
|
return 1ULL << (size + 20);
|
|
}
|
|
|
|
struct device_node;
|
|
|
|
#ifdef CONFIG_OF
|
|
int of_pci_parse_bus_range(struct device_node *node, struct resource *res);
|
|
int of_get_pci_domain_nr(struct device_node *node);
|
|
int of_pci_get_max_link_speed(struct device_node *node);
|
|
void pci_set_of_node(struct pci_dev *dev);
|
|
void pci_release_of_node(struct pci_dev *dev);
|
|
void pci_set_bus_of_node(struct pci_bus *bus);
|
|
void pci_release_bus_of_node(struct pci_bus *bus);
|
|
|
|
int devm_of_pci_bridge_init(struct device *dev, struct pci_host_bridge *bridge);
|
|
|
|
#else
|
|
static inline int
|
|
of_pci_parse_bus_range(struct device_node *node, struct resource *res)
|
|
{
|
|
return -EINVAL;
|
|
}
|
|
|
|
static inline int
|
|
of_get_pci_domain_nr(struct device_node *node)
|
|
{
|
|
return -1;
|
|
}
|
|
|
|
static inline int
|
|
of_pci_get_max_link_speed(struct device_node *node)
|
|
{
|
|
return -EINVAL;
|
|
}
|
|
|
|
static inline void pci_set_of_node(struct pci_dev *dev) { }
|
|
static inline void pci_release_of_node(struct pci_dev *dev) { }
|
|
static inline void pci_set_bus_of_node(struct pci_bus *bus) { }
|
|
static inline void pci_release_bus_of_node(struct pci_bus *bus) { }
|
|
|
|
static inline int devm_of_pci_bridge_init(struct device *dev, struct pci_host_bridge *bridge)
|
|
{
|
|
return 0;
|
|
}
|
|
|
|
#endif /* CONFIG_OF */
|
|
|
|
#ifdef CONFIG_PCIEAER
|
|
void pci_no_aer(void);
|
|
void pci_aer_init(struct pci_dev *dev);
|
|
void pci_aer_exit(struct pci_dev *dev);
|
|
extern const struct attribute_group aer_stats_attr_group;
|
|
void pci_aer_clear_fatal_status(struct pci_dev *dev);
|
|
int pci_aer_clear_status(struct pci_dev *dev);
|
|
int pci_aer_raw_clear_status(struct pci_dev *dev);
|
|
#else
|
|
static inline void pci_no_aer(void) { }
|
|
static inline void pci_aer_init(struct pci_dev *d) { }
|
|
static inline void pci_aer_exit(struct pci_dev *d) { }
|
|
static inline void pci_aer_clear_fatal_status(struct pci_dev *dev) { }
|
|
static inline int pci_aer_clear_status(struct pci_dev *dev) { return -EINVAL; }
|
|
static inline int pci_aer_raw_clear_status(struct pci_dev *dev) { return -EINVAL; }
|
|
#endif
|
|
|
|
#ifdef CONFIG_ACPI
|
|
int pci_acpi_program_hp_params(struct pci_dev *dev);
|
|
extern const struct attribute_group pci_dev_acpi_attr_group;
|
|
#else
|
|
static inline int pci_acpi_program_hp_params(struct pci_dev *dev)
|
|
{
|
|
return -ENODEV;
|
|
}
|
|
#endif
|
|
|
|
#ifdef CONFIG_PCIEASPM
|
|
extern const struct attribute_group aspm_ctrl_attr_group;
|
|
#endif
|
|
|
|
#endif /* DRIVERS_PCI_H */
|