20480b9f10c887b4e83cafd8e4a19e6559ca0a43
[linux-2.6.git] / include / linux / pci-acpi.h
1 /*
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
11 #include <linux/acpi.h>
12
13 #ifdef CONFIG_ACPI
14 static inline acpi_handle acpi_find_root_bridge_handle(struct pci_dev *pdev)
15 {
16         /* Find root host bridge */
17         while (pdev->bus->self)
18                 pdev = pdev->bus->self;
19
20         return acpi_get_pci_rootbridge_handle(pci_domain_nr(pdev->bus),
21                         pdev->bus->number);
22 }
23
24 static inline acpi_handle acpi_pci_get_bridge_handle(struct pci_bus *pbus)
25 {
26         int seg = pci_domain_nr(pbus), busnr = pbus->number;
27         struct pci_dev *bridge = pbus->self;
28         if (bridge)
29                 return DEVICE_ACPI_HANDLE(&(bridge->dev));
30         return acpi_get_pci_rootbridge_handle(seg, busnr);
31 }
32 #else
33 static inline acpi_handle acpi_find_root_bridge_handle(struct pci_dev *pdev)
34 { return NULL; }
35 #endif
36
37 #endif  /* _PCI_ACPI_H_ */