MdeModulePkg/Bus/Pci/PciBusDxe/PciPowerManagement.h

   1 /** @file
   2   Power management support fucntions delaration for PCI Bus module.
   3
   4 Copyright (c) 2006 - 2009, Intel Corporation. All rights reserved.<BR>
   5 This program and the accompanying materials
   6 are licensed and made available under the terms and conditions of the BSD License
   7 which accompanies this distribution.  The full text of the license may be found at
   8 http://opensource.org/licenses/bsd-license.php
   9
  10 THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
  11 WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
  12
  13 **/
  14
  15 #ifndef _EFI_PCI_POWER_MANAGEMENT_H_
  16 #define _EFI_PCI_POWER_MANAGEMENT_H_
  17
  18 /**
  19   This function is intended to turn off PWE assertion and
  20   put the device to D0 state if the device supports
  21   PCI Power Management.
  22
  23   @param PciIoDevice      PCI device instance.
  24
  25   @retval EFI_UNSUPPORTED PCI Device does not support power management.
  26   @retval EFI_SUCCESS     Turned off PWE successfully.
  27
  28 **/
  29 EFI_STATUS
  30 ResetPowerManagementFeature (
  31   IN PCI_IO_DEVICE *PciIoDevice
  32   );
  33
  34 #endif