pci-acpi.h (4280B)
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 15extern acpi_status pci_acpi_add_bus_pm_notifier(struct acpi_device *dev); 16static inline acpi_status pci_acpi_remove_bus_pm_notifier(struct acpi_device *dev) 17{ 18 return acpi_remove_pm_notifier(dev); 19} 20extern acpi_status pci_acpi_add_pm_notifier(struct acpi_device *dev, 21 struct pci_dev *pci_dev); 22static inline acpi_status pci_acpi_remove_pm_notifier(struct acpi_device *dev) 23{ 24 return acpi_remove_pm_notifier(dev); 25} 26extern phys_addr_t acpi_pci_root_get_mcfg_addr(acpi_handle handle); 27 28struct pci_ecam_ops; 29extern int pci_mcfg_lookup(struct acpi_pci_root *root, struct resource *cfgres, 30 const struct pci_ecam_ops **ecam_ops); 31 32static 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 43static 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 60struct acpi_pci_root; 61struct acpi_pci_root_ops; 62 63struct 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 71struct 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 78extern int acpi_pci_probe_root_resources(struct acpi_pci_root_info *info); 79extern 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 84void acpi_pci_add_bus(struct pci_bus *bus); 85void acpi_pci_remove_bus(struct pci_bus *bus); 86 87#ifdef CONFIG_PCI 88void pci_acpi_setup(struct device *dev, struct acpi_device *adev); 89void pci_acpi_cleanup(struct device *dev, struct acpi_device *adev); 90#else 91static inline void pci_acpi_setup(struct device *dev, struct acpi_device *adev) {} 92static inline void pci_acpi_cleanup(struct device *dev, struct acpi_device *adev) {} 93#endif 94 95#ifdef CONFIG_ACPI_PCI_SLOT 96void acpi_pci_slot_init(void); 97void acpi_pci_slot_enumerate(struct pci_bus *bus); 98void acpi_pci_slot_remove(struct pci_bus *bus); 99#else 100static inline void acpi_pci_slot_init(void) { } 101static inline void acpi_pci_slot_enumerate(struct pci_bus *bus) { } 102static inline void acpi_pci_slot_remove(struct pci_bus *bus) { } 103#endif 104 105#ifdef CONFIG_HOTPLUG_PCI_ACPI 106void acpiphp_init(void); 107void acpiphp_enumerate_slots(struct pci_bus *bus); 108void acpiphp_remove_slots(struct pci_bus *bus); 109void acpiphp_check_host_bridge(struct acpi_device *adev); 110#else 111static inline void acpiphp_init(void) { } 112static inline void acpiphp_enumerate_slots(struct pci_bus *bus) { } 113static inline void acpiphp_remove_slots(struct pci_bus *bus) { } 114static inline void acpiphp_check_host_bridge(struct acpi_device *adev) { } 115#endif 116 117extern 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 126void pci_acpi_add_edr_notifier(struct pci_dev *pdev); 127void pci_acpi_remove_edr_notifier(struct pci_dev *pdev); 128#else 129static inline void pci_acpi_add_edr_notifier(struct pci_dev *pdev) { } 130static inline void pci_acpi_remove_edr_notifier(struct pci_dev *pdev) { } 131#endif /* CONFIG_PCIE_EDR */ 132 133int pci_acpi_set_companion_lookup_hook(struct acpi_device *(*func)(struct pci_dev *)); 134void pci_acpi_clear_companion_lookup_hook(void); 135 136#else /* CONFIG_ACPI */ 137static inline void acpi_pci_add_bus(struct pci_bus *bus) { } 138static inline void acpi_pci_remove_bus(struct pci_bus *bus) { } 139#endif /* CONFIG_ACPI */ 140 141#endif /* _PCI_ACPI_H_ */