| /* SPDX-License-Identifier: GPL-2.0 */ |
| /* |
| * File pci-acpi.h |
| * |
| * Copyright (C) 2004 Intel |
| * Copyright (C) Tom Long Nguyen (tom.l.nguyen@intel.com) |
| */ |
| |
| #ifndef _PCI_ACPI_H_ |
| #define _PCI_ACPI_H_ |
| |
| #include <linux/acpi.h> |
| |
| #ifdef CONFIG_ACPI |
| extern acpi_status pci_acpi_add_bus_pm_notifier(struct acpi_device *dev); |
| static inline acpi_status pci_acpi_remove_bus_pm_notifier(struct acpi_device *dev) |
| { |
| return acpi_remove_pm_notifier(dev); |
| } |
| extern acpi_status pci_acpi_add_pm_notifier(struct acpi_device *dev, |
| struct pci_dev *pci_dev); |
| static inline acpi_status pci_acpi_remove_pm_notifier(struct acpi_device *dev) |
| { |
| return acpi_remove_pm_notifier(dev); |
| } |
| extern phys_addr_t acpi_pci_root_get_mcfg_addr(acpi_handle handle); |
| |
| struct pci_ecam_ops; |
| extern int pci_mcfg_lookup(struct acpi_pci_root *root, struct resource *cfgres, |
| const struct pci_ecam_ops **ecam_ops); |
| |
| static inline acpi_handle acpi_find_root_bridge_handle(struct pci_dev *pdev) |
| { |
| struct pci_bus *pbus = pdev->bus; |
| |
| /* Find a PCI root bus */ |
| while (!pci_is_root_bus(pbus)) |
| pbus = pbus->parent; |
| |
| return ACPI_HANDLE(pbus->bridge); |
| } |
| |
| static inline acpi_handle acpi_pci_get_bridge_handle(struct pci_bus *pbus) |
| { |
| struct device *dev; |
| |
| if (pci_is_root_bus(pbus)) |
| dev = pbus->bridge; |
| else { |
| /* If pbus is a virtual bus, there is no bridge to it */ |
| if (!pbus->self) |
| return NULL; |
| |
| dev = &pbus->self->dev; |
| } |
| |
| return ACPI_HANDLE(dev); |
| } |
| |
| struct acpi_pci_root; |
| struct acpi_pci_root_ops; |
| |
| struct acpi_pci_root_info { |
| struct acpi_pci_root *root; |
| struct acpi_device *bridge; |
| struct acpi_pci_root_ops *ops; |
| struct list_head resources; |
| char name[16]; |
| }; |
| |
| struct acpi_pci_root_ops { |
| struct pci_ops *pci_ops; |
| int (*init_info)(struct acpi_pci_root_info *info); |
| void (*release_info)(struct acpi_pci_root_info *info); |
| int (*prepare_resources)(struct acpi_pci_root_info *info); |
| }; |
| |
| extern int acpi_pci_probe_root_resources(struct acpi_pci_root_info *info); |
| extern struct pci_bus *acpi_pci_root_create(struct acpi_pci_root *root, |
| struct acpi_pci_root_ops *ops, |
| struct acpi_pci_root_info *info, |
| void *sd); |
| |
| void acpi_pci_add_bus(struct pci_bus *bus); |
| void acpi_pci_remove_bus(struct pci_bus *bus); |
| |
| #ifdef CONFIG_PCI |
| void pci_acpi_setup(struct device *dev, struct acpi_device *adev); |
| void pci_acpi_cleanup(struct device *dev, struct acpi_device *adev); |
| #else |
| static inline void pci_acpi_setup(struct device *dev, struct acpi_device *adev) {} |
| static inline void pci_acpi_cleanup(struct device *dev, struct acpi_device *adev) {} |
| #endif |
| |
| #ifdef CONFIG_ACPI_PCI_SLOT |
| void acpi_pci_slot_init(void); |
| void acpi_pci_slot_enumerate(struct pci_bus *bus); |
| void acpi_pci_slot_remove(struct pci_bus *bus); |
| #else |
| static inline void acpi_pci_slot_init(void) { } |
| static inline void acpi_pci_slot_enumerate(struct pci_bus *bus) { } |
| static inline void acpi_pci_slot_remove(struct pci_bus *bus) { } |
| #endif |
| |
| #ifdef CONFIG_HOTPLUG_PCI_ACPI |
| void acpiphp_init(void); |
| void acpiphp_enumerate_slots(struct pci_bus *bus); |
| void acpiphp_remove_slots(struct pci_bus *bus); |
| void acpiphp_check_host_bridge(struct acpi_device *adev); |
| #else |
| static inline void acpiphp_init(void) { } |
| static inline void acpiphp_enumerate_slots(struct pci_bus *bus) { } |
| static inline void acpiphp_remove_slots(struct pci_bus *bus) { } |
| static inline void acpiphp_check_host_bridge(struct acpi_device *adev) { } |
| #endif |
| |
| extern const guid_t pci_acpi_dsm_guid; |
| |
| /* _DSM Definitions for PCI */ |
| #define DSM_PCI_PRESERVE_BOOT_CONFIG 0x05 |
| #define DSM_PCI_DEVICE_NAME 0x07 |
| #define DSM_PCI_POWER_ON_RESET_DELAY 0x08 |
| #define DSM_PCI_DEVICE_READINESS_DURATIONS 0x09 |
| |
| #ifdef CONFIG_PCIE_EDR |
| void pci_acpi_add_edr_notifier(struct pci_dev *pdev); |
| void pci_acpi_remove_edr_notifier(struct pci_dev *pdev); |
| #else |
| static inline void pci_acpi_add_edr_notifier(struct pci_dev *pdev) { } |
| static inline void pci_acpi_remove_edr_notifier(struct pci_dev *pdev) { } |
| #endif /* CONFIG_PCIE_EDR */ |
| |
| int pci_acpi_set_companion_lookup_hook(struct acpi_device *(*func)(struct pci_dev *)); |
| void pci_acpi_clear_companion_lookup_hook(void); |
| |
| #else /* CONFIG_ACPI */ |
| static inline void acpi_pci_add_bus(struct pci_bus *bus) { } |
| static inline void acpi_pci_remove_bus(struct pci_bus *bus) { } |
| #endif /* CONFIG_ACPI */ |
| |
| #endif /* _PCI_ACPI_H_ */ |