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_ */