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

   1/*
   2 * File         pci-acpi.h
   3 *
   4 * Copyright (C) 2004 Intel
   5 * Copyright (C) Tom Long Nguyen (tom.l.nguyen@intel.com)
   6 */
   7
   8#ifndef _PCI_ACPI_H_
   9#define _PCI_ACPI_H_
  10
  11#include <linux/acpi.h>
  12
  13#ifdef CONFIG_ACPI
  14extern acpi_status pci_acpi_add_bus_pm_notifier(struct acpi_device *dev);
  15static inline acpi_status pci_acpi_remove_bus_pm_notifier(struct acpi_device *dev)
  16{
  17        return acpi_remove_pm_notifier(dev);
  18}
  19extern acpi_status pci_acpi_add_pm_notifier(struct acpi_device *dev,
  20                                             struct pci_dev *pci_dev);
  21static inline acpi_status pci_acpi_remove_pm_notifier(struct acpi_device *dev)
  22{
  23        return acpi_remove_pm_notifier(dev);
  24}
  25extern phys_addr_t acpi_pci_root_get_mcfg_addr(acpi_handle handle);
  26
  27extern phys_addr_t pci_mcfg_lookup(u16 domain, struct resource *bus_res);
  28
  29static inline acpi_handle acpi_find_root_bridge_handle(struct pci_dev *pdev)
  30{
  31        struct pci_bus *pbus = pdev->bus;
  32
  33        /* Find a PCI root bus */
  34        while (!pci_is_root_bus(pbus))
  35                pbus = pbus->parent;
  36
  37        return ACPI_HANDLE(pbus->bridge);
  38}
  39
  40static inline acpi_handle acpi_pci_get_bridge_handle(struct pci_bus *pbus)
  41{
  42        struct device *dev;
  43
  44        if (pci_is_root_bus(pbus))
  45                dev = pbus->bridge;
  46        else {
  47                /* If pbus is a virtual bus, there is no bridge to it */
  48                if (!pbus->self)
  49                        return NULL;
  50
  51                dev = &pbus->self->dev;
  52        }
  53
  54        return ACPI_HANDLE(dev);
  55}
  56
  57struct acpi_pci_root;
  58struct acpi_pci_root_ops;
  59
  60struct acpi_pci_root_info {
  61        struct acpi_pci_root            *root;
  62        struct acpi_device              *bridge;
  63        struct acpi_pci_root_ops        *ops;
  64        struct list_head                resources;
  65        char                            name[16];
  66};
  67
  68struct acpi_pci_root_ops {
  69        struct pci_ops *pci_ops;
  70        int (*init_info)(struct acpi_pci_root_info *info);
  71        void (*release_info)(struct acpi_pci_root_info *info);
  72        int (*prepare_resources)(struct acpi_pci_root_info *info);
  73};
  74
  75extern int acpi_pci_probe_root_resources(struct acpi_pci_root_info *info);
  76extern struct pci_bus *acpi_pci_root_create(struct acpi_pci_root *root,
  77                                            struct acpi_pci_root_ops *ops,
  78                                            struct acpi_pci_root_info *info,
  79                                            void *sd);
  80
  81void acpi_pci_add_bus(struct pci_bus *bus);
  82void acpi_pci_remove_bus(struct pci_bus *bus);
  83
  84#ifdef  CONFIG_ACPI_PCI_SLOT
  85void acpi_pci_slot_init(void);
  86void acpi_pci_slot_enumerate(struct pci_bus *bus);
  87void acpi_pci_slot_remove(struct pci_bus *bus);
  88#else
  89static inline void acpi_pci_slot_init(void) { }
  90static inline void acpi_pci_slot_enumerate(struct pci_bus *bus) { }
  91static inline void acpi_pci_slot_remove(struct pci_bus *bus) { }
  92#endif
  93
  94#ifdef  CONFIG_HOTPLUG_PCI_ACPI
  95void acpiphp_init(void);
  96void acpiphp_enumerate_slots(struct pci_bus *bus);
  97void acpiphp_remove_slots(struct pci_bus *bus);
  98void acpiphp_check_host_bridge(struct acpi_device *adev);
  99#else
 100static inline void acpiphp_init(void) { }
 101static inline void acpiphp_enumerate_slots(struct pci_bus *bus) { }
 102static inline void acpiphp_remove_slots(struct pci_bus *bus) { }
 103static inline void acpiphp_check_host_bridge(struct acpi_device *adev) { }
 104#endif
 105
 106extern const u8 pci_acpi_dsm_uuid[];
 107#define DEVICE_LABEL_DSM        0x07
 108#define RESET_DELAY_DSM         0x08
 109#define FUNCTION_DELAY_DSM      0x09
 110
 111#else   /* CONFIG_ACPI */
 112static inline void acpi_pci_add_bus(struct pci_bus *bus) { }
 113static inline void acpi_pci_remove_bus(struct pci_bus *bus) { }
 114#endif  /* CONFIG_ACPI */
 115
 116#ifdef CONFIG_ACPI_APEI
 117extern bool aer_acpi_firmware_first(void);
 118#else
 119static inline bool aer_acpi_firmware_first(void) { return false; }
 120#endif
 121
 122#endif  /* _PCI_ACPI_H_ */
 123