tjh.dev
Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
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
14extern acpi_status pci_acpi_add_bus_pm_notifier(struct acpi_device *dev);
15static inline acpi_status pci_acpi_remove_bus_pm_notifier(struct acpi_device *dev)
16{
17 return acpi_remove_pm_notifier(dev);
18}
19extern acpi_status pci_acpi_add_pm_notifier(struct acpi_device *dev,
20 struct pci_dev *pci_dev);
21static inline acpi_status pci_acpi_remove_pm_notifier(struct acpi_device *dev)
22{
23 return acpi_remove_pm_notifier(dev);
24}
25extern phys_addr_t acpi_pci_root_get_mcfg_addr(acpi_handle handle);
26
27struct pci_ecam_ops;
28extern int pci_mcfg_lookup(struct acpi_pci_root *root, struct resource *cfgres,
29 struct pci_ecam_ops **ecam_ops);
30
31static 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
42static 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
59struct acpi_pci_root;
60struct acpi_pci_root_ops;
61
62struct 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
70struct 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
77extern int acpi_pci_probe_root_resources(struct acpi_pci_root_info *info);
78extern 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
83void acpi_pci_add_bus(struct pci_bus *bus);
84void acpi_pci_remove_bus(struct pci_bus *bus);
85
86#ifdef CONFIG_ACPI_PCI_SLOT
87void acpi_pci_slot_init(void);
88void acpi_pci_slot_enumerate(struct pci_bus *bus);
89void acpi_pci_slot_remove(struct pci_bus *bus);
90#else
91static inline void acpi_pci_slot_init(void) { }
92static inline void acpi_pci_slot_enumerate(struct pci_bus *bus) { }
93static inline void acpi_pci_slot_remove(struct pci_bus *bus) { }
94#endif
95
96#ifdef CONFIG_HOTPLUG_PCI_ACPI
97void acpiphp_init(void);
98void acpiphp_enumerate_slots(struct pci_bus *bus);
99void acpiphp_remove_slots(struct pci_bus *bus);
100void acpiphp_check_host_bridge(struct acpi_device *adev);
101#else
102static inline void acpiphp_init(void) { }
103static inline void acpiphp_enumerate_slots(struct pci_bus *bus) { }
104static inline void acpiphp_remove_slots(struct pci_bus *bus) { }
105static inline void acpiphp_check_host_bridge(struct acpi_device *adev) { }
106#endif
107
108extern 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 */
114static inline void acpi_pci_add_bus(struct pci_bus *bus) { }
115static inline void acpi_pci_remove_bus(struct pci_bus *bus) { }
116#endif /* CONFIG_ACPI */
117
118#ifdef CONFIG_ACPI_APEI
119extern bool aer_acpi_firmware_first(void);
120#else
121static inline bool aer_acpi_firmware_first(void) { return false; }
122#endif
123
124#endif /* _PCI_ACPI_H_ */