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   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         struct pci_bus *pbus = pdev->bus;
  17         /* Find a PCI root bus */
  18         while (!pci_is_root_bus(pbus))
  19                 pbus = pbus->parent;
  20         return acpi_get_pci_rootbridge_handle(pci_domain_nr(pbus),
  21                                               pbus->number);
  22 }
  23
  24 static inline acpi_handle acpi_pci_get_bridge_handle(struct pci_bus *pbus)
  25 {
  26         if (!pci_is_root_bus(pbus))
  27                 return DEVICE_ACPI_HANDLE(&(pbus->self->dev));
  28         return acpi_get_pci_rootbridge_handle(pci_domain_nr(pbus),
  29                                               pbus->number);
  30 }
  31 #else
  32 static inline acpi_handle acpi_find_root_bridge_handle(struct pci_dev *pdev)
  33 { return NULL; }
  34 #endif
  35
  36 #endif  /* _PCI_ACPI_H_ */