1 | /* SPDX-License-Identifier: GPL-2.0 */ |
2 | /* |
3 | * File pci-acpi.h |
4 | * |
5 | * Copyright (C) 2004 Intel |
6 | * Copyright (C) Tom Long Nguyen (tom.l.nguyen@intel.com) |
7 | */ |
8 | |
9 | #ifndef _PCI_ACPI_H_ |
10 | #define _PCI_ACPI_H_ |
11 | |
12 | #include <linux/acpi.h> |
13 | |
14 | #ifdef CONFIG_ACPI |
15 | extern acpi_status pci_acpi_add_bus_pm_notifier(struct acpi_device *dev); |
16 | static inline acpi_status pci_acpi_remove_bus_pm_notifier(struct acpi_device *dev) |
17 | { |
18 | return acpi_remove_pm_notifier(adev: dev); |
19 | } |
20 | extern acpi_status pci_acpi_add_pm_notifier(struct acpi_device *dev, |
21 | struct pci_dev *pci_dev); |
22 | static inline acpi_status pci_acpi_remove_pm_notifier(struct acpi_device *dev) |
23 | { |
24 | return acpi_remove_pm_notifier(adev: dev); |
25 | } |
26 | extern phys_addr_t acpi_pci_root_get_mcfg_addr(acpi_handle handle); |
27 | |
28 | struct pci_ecam_ops; |
29 | extern int pci_mcfg_lookup(struct acpi_pci_root *root, struct resource *cfgres, |
30 | const struct pci_ecam_ops **ecam_ops); |
31 | |
32 | static inline acpi_handle acpi_find_root_bridge_handle(struct pci_dev *pdev) |
33 | { |
34 | struct pci_bus *pbus = pdev->bus; |
35 | |
36 | /* Find a PCI root bus */ |
37 | while (!pci_is_root_bus(pbus)) |
38 | pbus = pbus->parent; |
39 | |
40 | return ACPI_HANDLE(pbus->bridge); |
41 | } |
42 | |
43 | static inline acpi_handle acpi_pci_get_bridge_handle(struct pci_bus *pbus) |
44 | { |
45 | struct device *dev; |
46 | |
47 | if (pci_is_root_bus(pbus)) |
48 | dev = pbus->bridge; |
49 | else { |
50 | /* If pbus is a virtual bus, there is no bridge to it */ |
51 | if (!pbus->self) |
52 | return NULL; |
53 | |
54 | dev = &pbus->self->dev; |
55 | } |
56 | |
57 | return ACPI_HANDLE(dev); |
58 | } |
59 | |
60 | struct acpi_pci_root; |
61 | struct acpi_pci_root_ops; |
62 | |
63 | struct acpi_pci_root_info { |
64 | struct acpi_pci_root *root; |
65 | struct acpi_device *bridge; |
66 | struct acpi_pci_root_ops *ops; |
67 | struct list_head resources; |
68 | char name[16]; |
69 | }; |
70 | |
71 | struct acpi_pci_root_ops { |
72 | struct pci_ops *pci_ops; |
73 | int (*init_info)(struct acpi_pci_root_info *info); |
74 | void (*release_info)(struct acpi_pci_root_info *info); |
75 | int (*prepare_resources)(struct acpi_pci_root_info *info); |
76 | }; |
77 | |
78 | extern int acpi_pci_probe_root_resources(struct acpi_pci_root_info *info); |
79 | extern struct pci_bus *acpi_pci_root_create(struct acpi_pci_root *root, |
80 | struct acpi_pci_root_ops *ops, |
81 | struct acpi_pci_root_info *info, |
82 | void *sd); |
83 | |
84 | void acpi_pci_add_bus(struct pci_bus *bus); |
85 | void acpi_pci_remove_bus(struct pci_bus *bus); |
86 | |
87 | #ifdef CONFIG_PCI |
88 | void pci_acpi_setup(struct device *dev, struct acpi_device *adev); |
89 | void pci_acpi_cleanup(struct device *dev, struct acpi_device *adev); |
90 | #else |
91 | static inline void pci_acpi_setup(struct device *dev, struct acpi_device *adev) {} |
92 | static inline void pci_acpi_cleanup(struct device *dev, struct acpi_device *adev) {} |
93 | #endif |
94 | |
95 | #ifdef CONFIG_ACPI_PCI_SLOT |
96 | void acpi_pci_slot_init(void); |
97 | void acpi_pci_slot_enumerate(struct pci_bus *bus); |
98 | void acpi_pci_slot_remove(struct pci_bus *bus); |
99 | #else |
100 | static inline void acpi_pci_slot_init(void) { } |
101 | static inline void acpi_pci_slot_enumerate(struct pci_bus *bus) { } |
102 | static inline void acpi_pci_slot_remove(struct pci_bus *bus) { } |
103 | #endif |
104 | |
105 | #ifdef CONFIG_HOTPLUG_PCI_ACPI |
106 | void acpiphp_init(void); |
107 | void acpiphp_enumerate_slots(struct pci_bus *bus); |
108 | void acpiphp_remove_slots(struct pci_bus *bus); |
109 | void acpiphp_check_host_bridge(struct acpi_device *adev); |
110 | #else |
111 | static inline void acpiphp_init(void) { } |
112 | static inline void acpiphp_enumerate_slots(struct pci_bus *bus) { } |
113 | static inline void acpiphp_remove_slots(struct pci_bus *bus) { } |
114 | static inline void acpiphp_check_host_bridge(struct acpi_device *adev) { } |
115 | #endif |
116 | |
117 | extern const guid_t pci_acpi_dsm_guid; |
118 | |
119 | /* _DSM Definitions for PCI */ |
120 | #define DSM_PCI_PRESERVE_BOOT_CONFIG 0x05 |
121 | #define DSM_PCI_DEVICE_NAME 0x07 |
122 | #define DSM_PCI_POWER_ON_RESET_DELAY 0x08 |
123 | #define DSM_PCI_DEVICE_READINESS_DURATIONS 0x09 |
124 | |
125 | #ifdef CONFIG_PCIE_EDR |
126 | void pci_acpi_add_edr_notifier(struct pci_dev *pdev); |
127 | void pci_acpi_remove_edr_notifier(struct pci_dev *pdev); |
128 | #else |
129 | static inline void pci_acpi_add_edr_notifier(struct pci_dev *pdev) { } |
130 | static inline void pci_acpi_remove_edr_notifier(struct pci_dev *pdev) { } |
131 | #endif /* CONFIG_PCIE_EDR */ |
132 | |
133 | int pci_acpi_set_companion_lookup_hook(struct acpi_device *(*func)(struct pci_dev *)); |
134 | void pci_acpi_clear_companion_lookup_hook(void); |
135 | |
136 | #else /* CONFIG_ACPI */ |
137 | static inline void acpi_pci_add_bus(struct pci_bus *bus) { } |
138 | static inline void acpi_pci_remove_bus(struct pci_bus *bus) { } |
139 | #endif /* CONFIG_ACPI */ |
140 | |
141 | #endif /* _PCI_ACPI_H_ */ |
142 | |