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Linus Torvalds1da177e2005-04-16 15:20:36 -07001/*
2 * File pci-acpi.h
3 *
4 * Copyright (C) 2004 Intel
5 * Copyright (C) Tom Long Nguyen (tom.l.nguyen@intel.com)
6 */
7
8#ifndef _PCI_ACPI_H_
9#define _PCI_ACPI_H_
10
Andrew Patterson8b620912008-11-10 15:30:40 -070011#include <linux/acpi.h>
12
Linus Torvalds1da177e2005-04-16 15:20:36 -070013#ifdef CONFIG_ACPI
Rafael J. Wysockib67ea762010-02-17 23:44:09 +010014extern acpi_status pci_acpi_add_bus_pm_notifier(struct acpi_device *dev,
15 struct pci_bus *pci_bus);
16extern acpi_status pci_acpi_remove_bus_pm_notifier(struct acpi_device *dev);
17extern acpi_status pci_acpi_add_pm_notifier(struct acpi_device *dev,
18 struct pci_dev *pci_dev);
19extern acpi_status pci_acpi_remove_pm_notifier(struct acpi_device *dev);
20
Jiri Slaby056c58e2008-08-18 20:22:54 +020021static inline acpi_handle acpi_find_root_bridge_handle(struct pci_dev *pdev)
22{
Kenji Kaneshiged18690a2009-02-17 14:12:36 +090023 struct pci_bus *pbus = pdev->bus;
24 /* Find a PCI root bus */
Kenji Kaneshigea222b8f2009-05-26 16:05:33 +090025 while (!pci_is_root_bus(pbus))
Kenji Kaneshiged18690a2009-02-17 14:12:36 +090026 pbus = pbus->parent;
27 return acpi_get_pci_rootbridge_handle(pci_domain_nr(pbus),
28 pbus->number);
Jiri Slaby056c58e2008-08-18 20:22:54 +020029}
Kenji Kaneshigee8c331e2008-12-17 12:09:12 +090030
31static inline acpi_handle acpi_pci_get_bridge_handle(struct pci_bus *pbus)
32{
Kenji Kaneshige84845c02009-05-26 16:05:06 +090033 if (!pci_is_root_bus(pbus))
Kenji Kaneshige0747aaf2009-02-17 14:11:56 +090034 return DEVICE_ACPI_HANDLE(&(pbus->self->dev));
35 return acpi_get_pci_rootbridge_handle(pci_domain_nr(pbus),
36 pbus->number);
Kenji Kaneshigee8c331e2008-12-17 12:09:12 +090037}
Linus Torvalds1da177e2005-04-16 15:20:36 -070038#else
Jiri Slaby056c58e2008-08-18 20:22:54 +020039static inline acpi_handle acpi_find_root_bridge_handle(struct pci_dev *pdev)
40{ return NULL; }
Linus Torvalds1da177e2005-04-16 15:20:36 -070041#endif
42
43#endif /* _PCI_ACPI_H_ */