1 /* 2 * File pci-acpi.h 3 * 4 * Copyright (C) 2004 Intel 5 * Copyright (C) Tom Long Nguyen ([email protected]) 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_ */ 123