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