| 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(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(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_ */ |