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);
pci_acpi_remove_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);
pci_acpi_remove_pm_notifier(struct acpi_device * 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 
acpi_find_root_bridge_handle(struct pci_dev * pdev)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 
acpi_pci_get_bridge_handle(struct pci_bus * pbus)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
acpi_pci_slot_init(void)87 static inline void acpi_pci_slot_init(void) { }
acpi_pci_slot_enumerate(struct pci_bus * bus)88 static inline void acpi_pci_slot_enumerate(struct pci_bus *bus) { }
acpi_pci_slot_remove(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
acpiphp_init(void)98 static inline void acpiphp_init(void) { }
acpiphp_enumerate_slots(struct pci_bus * bus)99 static inline void acpiphp_enumerate_slots(struct pci_bus *bus) { }
acpiphp_remove_slots(struct pci_bus * bus)100 static inline void acpiphp_remove_slots(struct pci_bus *bus) { }
acpiphp_check_host_bridge(struct acpi_device * adev)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 */
acpi_pci_add_bus(struct pci_bus * bus)110 static inline void acpi_pci_add_bus(struct pci_bus *bus) { }
acpi_pci_remove_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
aer_acpi_firmware_first(void)117 static inline bool aer_acpi_firmware_first(void) { return false; }
118 #endif
119 
120 #endif	/* _PCI_ACPI_H_ */
121