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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 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 guid_t pci_acpi_dsm_guid;
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_ */