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
  14 extern acpi_status pci_acpi_add_bus_pm_notifier(struct acpi_device *dev);
  15 static inline acpi_status pci_acpi_remove_bus_pm_notifier(struct acpi_device *dev)
  16 {
  17         return acpi_remove_pm_notifier(dev);
  18 }
  19 extern acpi_status pci_acpi_add_pm_notifier(struct acpi_device *dev,
  20                                              struct pci_dev *pci_dev);
  21 static inline acpi_status pci_acpi_remove_pm_notifier(struct acpi_device *dev)
  22 {
  23         return acpi_remove_pm_notifier(dev);
  24 }
  25 extern phys_addr_t acpi_pci_root_get_mcfg_addr(acpi_handle handle);
  26
  27 extern phys_addr_t pci_mcfg_lookup(u16 domain, struct resource *bus_res);
  28
  29 static 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
  40 static 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
  57 struct acpi_pci_root;
  58 struct acpi_pci_root_ops;
  59
  60 struct 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
  68 struct 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
  75 extern int acpi_pci_probe_root_resources(struct acpi_pci_root_info *info);
  76 extern 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
  81 void acpi_pci_add_bus(struct pci_bus *bus);
  82 void acpi_pci_remove_bus(struct pci_bus *bus);
  83
  84 #ifdef  CONFIG_ACPI_PCI_SLOT
  85 void acpi_pci_slot_init(void);
  86 void acpi_pci_slot_enumerate(struct pci_bus *bus);
  87 void acpi_pci_slot_remove(struct pci_bus *bus);
  88 #else
  89 static inline void acpi_pci_slot_init(void) { }
  90 static inline void acpi_pci_slot_enumerate(struct pci_bus *bus) { }
  91 static inline void acpi_pci_slot_remove(struct pci_bus *bus) { }
  92 #endif
  93
  94 #ifdef  CONFIG_HOTPLUG_PCI_ACPI
  95 void acpiphp_init(void);
  96 void acpiphp_enumerate_slots(struct pci_bus *bus);
  97 void acpiphp_remove_slots(struct pci_bus *bus);
  98 void acpiphp_check_host_bridge(struct acpi_device *adev);
  99 #else
 100 static inline void acpiphp_init(void) { }
 101 static inline void acpiphp_enumerate_slots(struct pci_bus *bus) { }
 102 static inline void acpiphp_remove_slots(struct pci_bus *bus) { }
 103 static inline void acpiphp_check_host_bridge(struct acpi_device *adev) { }
 104 #endif
 105
 106 extern 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 */
 112 static inline void acpi_pci_add_bus(struct pci_bus *bus) { }
 113 static inline void acpi_pci_remove_bus(struct pci_bus *bus) { }
 114 #endif  /* CONFIG_ACPI */
 115
 116 #ifdef CONFIG_ACPI_APEI
 117 extern bool aer_acpi_firmware_first(void);
 118 #else
 119 static inline bool aer_acpi_firmware_first(void) { return false; }
 120 #endif
 121
 122 #endif  /* _PCI_ACPI_H_ */