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 struct pci_ecam_ops; 28 extern int pci_mcfg_lookup(struct acpi_pci_root *root, struct resource *cfgres, 29 struct pci_ecam_ops **ecam_ops); 30 31 static inline acpi_handle acpi_find_root_bridge_handle(struct pci_dev *pdev) 32 { 33 struct pci_bus *pbus = pdev->bus; 34 35 /* Find a PCI root bus */ 36 while (!pci_is_root_bus(pbus)) 37 pbus = pbus->parent; 38 39 return ACPI_HANDLE(pbus->bridge); 40 } 41 42 static inline acpi_handle acpi_pci_get_bridge_handle(struct pci_bus *pbus) 43 { 44 struct device *dev; 45 46 if (pci_is_root_bus(pbus)) 47 dev = pbus->bridge; 48 else { 49 /* If pbus is a virtual bus, there is no bridge to it */ 50 if (!pbus->self) 51 return NULL; 52 53 dev = &pbus->self->dev; 54 } 55 56 return ACPI_HANDLE(dev); 57 } 58 59 struct acpi_pci_root; 60 struct acpi_pci_root_ops; 61 62 struct acpi_pci_root_info { 63 struct acpi_pci_root *root; 64 struct acpi_device *bridge; 65 struct acpi_pci_root_ops *ops; 66 struct list_head resources; 67 char name[16]; 68 }; 69 70 struct acpi_pci_root_ops { 71 struct pci_ops *pci_ops; 72 int (*init_info)(struct acpi_pci_root_info *info); 73 void (*release_info)(struct acpi_pci_root_info *info); 74 int (*prepare_resources)(struct acpi_pci_root_info *info); 75 }; 76 77 extern int acpi_pci_probe_root_resources(struct acpi_pci_root_info *info); 78 extern struct pci_bus *acpi_pci_root_create(struct acpi_pci_root *root, 79 struct acpi_pci_root_ops *ops, 80 struct acpi_pci_root_info *info, 81 void *sd); 82 83 void acpi_pci_add_bus(struct pci_bus *bus); 84 void acpi_pci_remove_bus(struct pci_bus *bus); 85 86 #ifdef CONFIG_ACPI_PCI_SLOT 87 void acpi_pci_slot_init(void); 88 void acpi_pci_slot_enumerate(struct pci_bus *bus); 89 void acpi_pci_slot_remove(struct pci_bus *bus); 90 #else 91 static inline void acpi_pci_slot_init(void) { } 92 static inline void acpi_pci_slot_enumerate(struct pci_bus *bus) { } 93 static inline void acpi_pci_slot_remove(struct pci_bus *bus) { } 94 #endif 95 96 #ifdef CONFIG_HOTPLUG_PCI_ACPI 97 void acpiphp_init(void); 98 void acpiphp_enumerate_slots(struct pci_bus *bus); 99 void acpiphp_remove_slots(struct pci_bus *bus); 100 void acpiphp_check_host_bridge(struct acpi_device *adev); 101 #else 102 static inline void acpiphp_init(void) { } 103 static inline void acpiphp_enumerate_slots(struct pci_bus *bus) { } 104 static inline void acpiphp_remove_slots(struct pci_bus *bus) { } 105 static inline void acpiphp_check_host_bridge(struct acpi_device *adev) { } 106 #endif 107 108 extern const u8 pci_acpi_dsm_uuid[]; 109 #define DEVICE_LABEL_DSM 0x07 110 #define RESET_DELAY_DSM 0x08 111 #define FUNCTION_DELAY_DSM 0x09 112 113 #else /* CONFIG_ACPI */ 114 static inline void acpi_pci_add_bus(struct pci_bus *bus) { } 115 static inline void acpi_pci_remove_bus(struct pci_bus *bus) { } 116 #endif /* CONFIG_ACPI */ 117 118 #ifdef CONFIG_ACPI_APEI 119 extern bool aer_acpi_firmware_first(void); 120 #else 121 static inline bool aer_acpi_firmware_first(void) { return false; } 122 #endif 123 124 #endif /* _PCI_ACPI_H_ */ 125