LXR linux/include/linux/pci-acpi.h

   1/* SPDX-License-Identifier: GPL-2.0 */
   2/*
   3 * File         pci-acpi.h
   4 *
   5 * Copyright (C) 2004 Intel
   6 * Copyright (C) Tom Long Nguyen (tom.l.nguyen@intel.com)
   7 */
   8
   9#ifndef _PCI_ACPI_H_
  10#define _PCI_ACPI_H_
  11
  12#include <linux/acpi.h>
  13
  14#ifdef CONFIG_ACPI
  15extern acpi_status pci_acpi_add_bus_pm_notifier(struct acpi_device *dev);
  16static inline acpi_status pci_acpi_remove_bus_pm_notifier(struct acpi_device *dev)
  17{
  18        return acpi_remove_pm_notifier(dev);
  19}
  20extern acpi_status pci_acpi_add_pm_notifier(struct acpi_device *dev,
  21                                             struct pci_dev *pci_dev);
  22static inline acpi_status pci_acpi_remove_pm_notifier(struct acpi_device *dev)
  23{
  24        return acpi_remove_pm_notifier(dev);
  25}
  26extern phys_addr_t acpi_pci_root_get_mcfg_addr(acpi_handle handle);
  27
  28struct pci_ecam_ops;
  29extern int pci_mcfg_lookup(struct acpi_pci_root *root, struct resource *cfgres,
  30                           struct pci_ecam_ops **ecam_ops);
  31
  32static inline acpi_handle acpi_find_root_bridge_handle(struct pci_dev *pdev)
  33{
  34        struct pci_bus *pbus = pdev->bus;
  35
  36        /* Find a PCI root bus */
  37        while (!pci_is_root_bus(pbus))
  38                pbus = pbus->parent;
  39
  40        return ACPI_HANDLE(pbus->bridge);
  41}
  42
  43static inline acpi_handle acpi_pci_get_bridge_handle(struct pci_bus *pbus)
  44{
  45        struct device *dev;
  46
  47        if (pci_is_root_bus(pbus))
  48                dev = pbus->bridge;
  49        else {
  50                /* If pbus is a virtual bus, there is no bridge to it */
  51                if (!pbus->self)
  52                        return NULL;
  53
  54                dev = &pbus->self->dev;
  55        }
  56
  57        return ACPI_HANDLE(dev);
  58}
  59
  60struct acpi_pci_root;
  61struct acpi_pci_root_ops;
  62
  63struct acpi_pci_root_info {
  64        struct acpi_pci_root            *root;
  65        struct acpi_device              *bridge;
  66        struct acpi_pci_root_ops        *ops;
  67        struct list_head                resources;
  68        char                            name[16];
  69};
  70
  71struct acpi_pci_root_ops {
  72        struct pci_ops *pci_ops;
  73        int (*init_info)(struct acpi_pci_root_info *info);
  74        void (*release_info)(struct acpi_pci_root_info *info);
  75        int (*prepare_resources)(struct acpi_pci_root_info *info);
  76};
  77
  78extern int acpi_pci_probe_root_resources(struct acpi_pci_root_info *info);
  79extern struct pci_bus *acpi_pci_root_create(struct acpi_pci_root *root,
  80                                            struct acpi_pci_root_ops *ops,
  81                                            struct acpi_pci_root_info *info,
  82                                            void *sd);
  83
  84void acpi_pci_add_bus(struct pci_bus *bus);
  85void acpi_pci_remove_bus(struct pci_bus *bus);
  86
  87#ifdef  CONFIG_ACPI_PCI_SLOT
  88void acpi_pci_slot_init(void);
  89void acpi_pci_slot_enumerate(struct pci_bus *bus);
  90void acpi_pci_slot_remove(struct pci_bus *bus);
  91#else
  92static inline void acpi_pci_slot_init(void) { }
  93static inline void acpi_pci_slot_enumerate(struct pci_bus *bus) { }
  94static inline void acpi_pci_slot_remove(struct pci_bus *bus) { }
  95#endif
  96
  97#ifdef  CONFIG_HOTPLUG_PCI_ACPI
  98void acpiphp_init(void);
  99void acpiphp_enumerate_slots(struct pci_bus *bus);
 100void acpiphp_remove_slots(struct pci_bus *bus);
 101void acpiphp_check_host_bridge(struct acpi_device *adev);
 102#else
 103static inline void acpiphp_init(void) { }
 104static inline void acpiphp_enumerate_slots(struct pci_bus *bus) { }
 105static inline void acpiphp_remove_slots(struct pci_bus *bus) { }
 106static inline void acpiphp_check_host_bridge(struct acpi_device *adev) { }
 107#endif
 108
 109extern const guid_t pci_acpi_dsm_guid;
 110#define DEVICE_LABEL_DSM        0x07
 111#define RESET_DELAY_DSM         0x08
 112#define FUNCTION_DELAY_DSM      0x09
 113
 114#else   /* CONFIG_ACPI */
 115static inline void acpi_pci_add_bus(struct pci_bus *bus) { }
 116static inline void acpi_pci_remove_bus(struct pci_bus *bus) { }
 117#endif  /* CONFIG_ACPI */
 118
 119#ifdef CONFIG_ACPI_APEI
 120extern bool aer_acpi_firmware_first(void);
 121#else
 122static inline bool aer_acpi_firmware_first(void) { return false; }
 123#endif
 124
 125#endif  /* _PCI_ACPI_H_ */
 126