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 extern acpi_status pci_acpi_add_bus_pm_notifier(struct acpi_device *dev,
  15                                                  struct pci_bus *pci_bus);
  16 extern acpi_status pci_acpi_remove_bus_pm_notifier(struct acpi_device *dev);
  17 extern acpi_status pci_acpi_add_pm_notifier(struct acpi_device *dev,
  18                                              struct pci_dev *pci_dev);
  19 extern acpi_status pci_acpi_remove_pm_notifier(struct acpi_device *dev);
  20 extern phys_addr_t acpi_pci_root_get_mcfg_addr(acpi_handle handle);
  21
  22 static inline acpi_handle acpi_find_root_bridge_handle(struct pci_dev *pdev)
  23 {
  24         struct pci_bus *pbus = pdev->bus;
  25
  26         /* Find a PCI root bus */
  27         while (!pci_is_root_bus(pbus))
  28                 pbus = pbus->parent;
  29
  30         return DEVICE_ACPI_HANDLE(pbus->bridge);
  31 }
  32
  33 static inline acpi_handle acpi_pci_get_bridge_handle(struct pci_bus *pbus)
  34 {
  35         struct device *dev;
  36
  37         if (pci_is_root_bus(pbus))
  38                 dev = pbus->bridge;
  39         else
  40                 dev = &pbus->self->dev;
  41
  42         return DEVICE_ACPI_HANDLE(dev);
  43 }
  44 #endif
  45
  46 #ifdef CONFIG_ACPI_APEI
  47 extern bool aer_acpi_firmware_first(void);
  48 #else
  49 static inline bool aer_acpi_firmware_first(void) { return false; }
  50 #endif
  51
  52 #endif  /* _PCI_ACPI_H_ */