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 static inline acpi_handle acpi_find_root_bridge_handle(struct pci_dev *pdev)
  28 {
  29         struct pci_bus *pbus = pdev->bus;
  30
  31         /* Find a PCI root bus */
  32         while (!pci_is_root_bus(pbus))
  33                 pbus = pbus->parent;
  34
  35         return ACPI_HANDLE(pbus->bridge);
  36 }
  37
  38 static inline acpi_handle acpi_pci_get_bridge_handle(struct pci_bus *pbus)
  39 {
  40         struct device *dev;
  41
  42         if (pci_is_root_bus(pbus))
  43                 dev = pbus->bridge;
  44         else {
  45                 /* If pbus is a virtual bus, there is no bridge to it */
  46                 if (!pbus->self)
  47                         return NULL;
  48
  49                 dev = &pbus->self->dev;
  50         }
  51
  52         return ACPI_HANDLE(dev);
  53 }
  54
  55 struct acpi_pci_root;
  56 struct acpi_pci_root_ops;
  57
  58 struct acpi_pci_root_info {
  59         struct acpi_pci_root            *root;
  60         struct acpi_device              *bridge;
  61         struct acpi_pci_root_ops        *ops;
  62         struct list_head                resources;
  63         char                            name[16];
  64 };
  65
  66 struct acpi_pci_root_ops {
  67         struct pci_ops *pci_ops;
  68         int (*init_info)(struct acpi_pci_root_info *info);
  69         void (*release_info)(struct acpi_pci_root_info *info);
  70         int (*prepare_resources)(struct acpi_pci_root_info *info);
  71 };
  72
  73 extern int acpi_pci_probe_root_resources(struct acpi_pci_root_info *info);
  74 extern struct pci_bus *acpi_pci_root_create(struct acpi_pci_root *root,
  75                                             struct acpi_pci_root_ops *ops,
  76                                             struct acpi_pci_root_info *info,
  77                                             void *sd);
  78
  79 void acpi_pci_add_bus(struct pci_bus *bus);
  80 void acpi_pci_remove_bus(struct pci_bus *bus);
  81
  82 #ifdef  CONFIG_ACPI_PCI_SLOT
  83 void acpi_pci_slot_init(void);
  84 void acpi_pci_slot_enumerate(struct pci_bus *bus);
  85 void acpi_pci_slot_remove(struct pci_bus *bus);
  86 #else
  87 static inline void acpi_pci_slot_init(void) { }
  88 static inline void acpi_pci_slot_enumerate(struct pci_bus *bus) { }
  89 static inline void acpi_pci_slot_remove(struct pci_bus *bus) { }
  90 #endif
  91
  92 #ifdef  CONFIG_HOTPLUG_PCI_ACPI
  93 void acpiphp_init(void);
  94 void acpiphp_enumerate_slots(struct pci_bus *bus);
  95 void acpiphp_remove_slots(struct pci_bus *bus);
  96 void acpiphp_check_host_bridge(struct acpi_device *adev);
  97 #else
  98 static inline void acpiphp_init(void) { }
  99 static inline void acpiphp_enumerate_slots(struct pci_bus *bus) { }
 100 static inline void acpiphp_remove_slots(struct pci_bus *bus) { }
 101 static inline void acpiphp_check_host_bridge(struct acpi_device *adev) { }
 102 #endif
 103
 104 extern const u8 pci_acpi_dsm_uuid[];
 105 #define DEVICE_LABEL_DSM        0x07
 106 #define RESET_DELAY_DSM         0x08
 107 #define FUNCTION_DELAY_DSM      0x09
 108
 109 #else   /* CONFIG_ACPI */
 110 static inline void acpi_pci_add_bus(struct pci_bus *bus) { }
 111 static inline void acpi_pci_remove_bus(struct pci_bus *bus) { }
 112 #endif  /* CONFIG_ACPI */
 113
 114 #ifdef CONFIG_ACPI_APEI
 115 extern bool aer_acpi_firmware_first(void);
 116 #else
 117 static inline bool aer_acpi_firmware_first(void) { return false; }
 118 #endif
 119
 120 #endif  /* _PCI_ACPI_H_ */