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); pci_acpi_remove_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 } 20 extern acpi_status pci_acpi_add_pm_notifier(struct acpi_device *dev, 21 struct pci_dev *pci_dev); pci_acpi_remove_pm_notifier(struct acpi_device * dev)22static 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 struct pci_ecam_ops **ecam_ops); 31 acpi_find_root_bridge_handle(struct pci_dev * pdev)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 acpi_pci_get_bridge_handle(struct pci_bus * pbus)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 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_ACPI_PCI_SLOT 88 void acpi_pci_slot_init(void); 89 void acpi_pci_slot_enumerate(struct pci_bus *bus); 90 void acpi_pci_slot_remove(struct pci_bus *bus); 91 #else acpi_pci_slot_init(void)92static inline void acpi_pci_slot_init(void) { } acpi_pci_slot_enumerate(struct pci_bus * bus)93static inline void acpi_pci_slot_enumerate(struct pci_bus *bus) { } acpi_pci_slot_remove(struct pci_bus * bus)94static inline void acpi_pci_slot_remove(struct pci_bus *bus) { } 95 #endif 96 97 #ifdef CONFIG_HOTPLUG_PCI_ACPI 98 void acpiphp_init(void); 99 void acpiphp_enumerate_slots(struct pci_bus *bus); 100 void acpiphp_remove_slots(struct pci_bus *bus); 101 void acpiphp_check_host_bridge(struct acpi_device *adev); 102 #else acpiphp_init(void)103static inline void acpiphp_init(void) { } acpiphp_enumerate_slots(struct pci_bus * bus)104static inline void acpiphp_enumerate_slots(struct pci_bus *bus) { } acpiphp_remove_slots(struct pci_bus * bus)105static inline void acpiphp_remove_slots(struct pci_bus *bus) { } acpiphp_check_host_bridge(struct acpi_device * adev)106static inline void acpiphp_check_host_bridge(struct acpi_device *adev) { } 107 #endif 108 109 extern const guid_t pci_acpi_dsm_guid; 110 #define DEVICE_LABEL_DSM 0x07 111 #define RESET_DELAY_DSM 0x08 112 #define FUNCTION_DELAY_DSM 0x09 113 114 #else /* CONFIG_ACPI */ acpi_pci_add_bus(struct pci_bus * bus)115static inline void acpi_pci_add_bus(struct pci_bus *bus) { } acpi_pci_remove_bus(struct pci_bus * bus)116static inline void acpi_pci_remove_bus(struct pci_bus *bus) { } 117 #endif /* CONFIG_ACPI */ 118 119 #ifdef CONFIG_ACPI_APEI 120 extern bool aer_acpi_firmware_first(void); 121 #else aer_acpi_firmware_first(void)122static inline bool aer_acpi_firmware_first(void) { return false; } 123 #endif 124 125 #endif /* _PCI_ACPI_H_ */ 126