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_root_pm_notifier(struct acpi_device *dev,
16 struct acpi_pci_root *pci_root);
pci_acpi_remove_bus_pm_notifier(struct acpi_device * dev)17 static inline acpi_status pci_acpi_remove_bus_pm_notifier(struct acpi_device *dev)
18 {
19 return acpi_remove_pm_notifier(dev);
20 }
21 extern acpi_status pci_acpi_add_pm_notifier(struct acpi_device *dev,
22 struct pci_dev *pci_dev);
pci_acpi_remove_pm_notifier(struct acpi_device * dev)23 static inline acpi_status pci_acpi_remove_pm_notifier(struct acpi_device *dev)
24 {
25 return acpi_remove_pm_notifier(dev);
26 }
27 extern phys_addr_t acpi_pci_root_get_mcfg_addr(acpi_handle handle);
28
29 struct pci_ecam_ops;
30 extern int pci_mcfg_lookup(struct acpi_pci_root *root, struct resource *cfgres,
31 const struct pci_ecam_ops **ecam_ops);
32
acpi_find_root_bridge_handle(struct pci_dev * pdev)33 static inline acpi_handle acpi_find_root_bridge_handle(struct pci_dev *pdev)
34 {
35 struct pci_bus *pbus = pdev->bus;
36
37 /* Find a PCI root bus */
38 while (!pci_is_root_bus(pbus))
39 pbus = pbus->parent;
40
41 return ACPI_HANDLE(pbus->bridge);
42 }
43
acpi_pci_get_bridge_handle(struct pci_bus * pbus)44 static inline acpi_handle acpi_pci_get_bridge_handle(struct pci_bus *pbus)
45 {
46 struct device *dev;
47
48 if (pci_is_root_bus(pbus))
49 dev = pbus->bridge;
50 else {
51 /* If pbus is a virtual bus, there is no bridge to it */
52 if (!pbus->self)
53 return NULL;
54
55 dev = &pbus->self->dev;
56 }
57
58 return ACPI_HANDLE(dev);
59 }
60
61 struct acpi_pci_root;
62 struct acpi_pci_root_ops;
63
64 struct acpi_pci_root_info {
65 struct acpi_pci_root *root;
66 struct acpi_device *bridge;
67 struct acpi_pci_root_ops *ops;
68 struct list_head resources;
69 char name[16];
70 };
71
72 struct acpi_pci_root_ops {
73 struct pci_ops *pci_ops;
74 int (*init_info)(struct acpi_pci_root_info *info);
75 void (*release_info)(struct acpi_pci_root_info *info);
76 int (*prepare_resources)(struct acpi_pci_root_info *info);
77 };
78
79 extern int acpi_pci_probe_root_resources(struct acpi_pci_root_info *info);
80 extern struct pci_bus *acpi_pci_root_create(struct acpi_pci_root *root,
81 struct acpi_pci_root_ops *ops,
82 struct acpi_pci_root_info *info,
83 void *sd);
84
85 void acpi_pci_add_bus(struct pci_bus *bus);
86 void acpi_pci_remove_bus(struct pci_bus *bus);
87
88 #ifdef CONFIG_PCI
89 void pci_acpi_setup(struct device *dev, struct acpi_device *adev);
90 void pci_acpi_cleanup(struct device *dev, struct acpi_device *adev);
91 #else
pci_acpi_setup(struct device * dev,struct acpi_device * adev)92 static inline void pci_acpi_setup(struct device *dev, struct acpi_device *adev) {}
pci_acpi_cleanup(struct device * dev,struct acpi_device * adev)93 static inline void pci_acpi_cleanup(struct device *dev, struct acpi_device *adev) {}
94 #endif
95
96 #ifdef CONFIG_ACPI_PCI_SLOT
97 void acpi_pci_slot_init(void);
98 void acpi_pci_slot_enumerate(struct pci_bus *bus);
99 void acpi_pci_slot_remove(struct pci_bus *bus);
100 #else
acpi_pci_slot_init(void)101 static inline void acpi_pci_slot_init(void) { }
acpi_pci_slot_enumerate(struct pci_bus * bus)102 static inline void acpi_pci_slot_enumerate(struct pci_bus *bus) { }
acpi_pci_slot_remove(struct pci_bus * bus)103 static inline void acpi_pci_slot_remove(struct pci_bus *bus) { }
104 #endif
105
106 #ifdef CONFIG_HOTPLUG_PCI_ACPI
107 void acpiphp_init(void);
108 void acpiphp_enumerate_slots(struct pci_bus *bus);
109 void acpiphp_remove_slots(struct pci_bus *bus);
110 void acpiphp_check_host_bridge(struct acpi_device *adev);
111 #else
acpiphp_init(void)112 static inline void acpiphp_init(void) { }
acpiphp_enumerate_slots(struct pci_bus * bus)113 static inline void acpiphp_enumerate_slots(struct pci_bus *bus) { }
acpiphp_remove_slots(struct pci_bus * bus)114 static inline void acpiphp_remove_slots(struct pci_bus *bus) { }
acpiphp_check_host_bridge(struct acpi_device * adev)115 static inline void acpiphp_check_host_bridge(struct acpi_device *adev) { }
116 #endif
117
118 extern const guid_t pci_acpi_dsm_guid;
119
120 /* _DSM Definitions for PCI */
121 #define DSM_PCI_PRESERVE_BOOT_CONFIG 0x05
122 #define DSM_PCI_DEVICE_NAME 0x07
123 #define DSM_PCI_POWER_ON_RESET_DELAY 0x08
124 #define DSM_PCI_DEVICE_READINESS_DURATIONS 0x09
125
126 #ifdef CONFIG_PCIE_EDR
127 void pci_acpi_add_edr_notifier(struct pci_dev *pdev);
128 void pci_acpi_remove_edr_notifier(struct pci_dev *pdev);
129 #else
pci_acpi_add_edr_notifier(struct pci_dev * pdev)130 static inline void pci_acpi_add_edr_notifier(struct pci_dev *pdev) { }
pci_acpi_remove_edr_notifier(struct pci_dev * pdev)131 static inline void pci_acpi_remove_edr_notifier(struct pci_dev *pdev) { }
132 #endif /* CONFIG_PCIE_EDR */
133
134 int pci_acpi_set_companion_lookup_hook(struct acpi_device *(*func)(struct pci_dev *));
135 void pci_acpi_clear_companion_lookup_hook(void);
136
137 #else /* CONFIG_ACPI */
acpi_pci_add_bus(struct pci_bus * bus)138 static inline void acpi_pci_add_bus(struct pci_bus *bus) { }
acpi_pci_remove_bus(struct pci_bus * bus)139 static inline void acpi_pci_remove_bus(struct pci_bus *bus) { }
140 #endif /* CONFIG_ACPI */
141
142 #endif /* _PCI_ACPI_H_ */
143