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-rw-r--r--Core/MdeModulePkg/Bus/Pci/PciBusDxe/PciPowerManagement.h34
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diff --git a/Core/MdeModulePkg/Bus/Pci/PciBusDxe/PciPowerManagement.h b/Core/MdeModulePkg/Bus/Pci/PciBusDxe/PciPowerManagement.h
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+++ b/Core/MdeModulePkg/Bus/Pci/PciBusDxe/PciPowerManagement.h
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+/** @file
+ Power management support fucntions delaration for PCI Bus module.
+
+Copyright (c) 2006 - 2009, Intel Corporation. All rights reserved.<BR>
+This program and the accompanying materials
+are licensed and made available under the terms and conditions of the BSD License
+which accompanies this distribution. The full text of the license may be found at
+http://opensource.org/licenses/bsd-license.php
+
+THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
+WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
+
+**/
+
+#ifndef _EFI_PCI_POWER_MANAGEMENT_H_
+#define _EFI_PCI_POWER_MANAGEMENT_H_
+
+/**
+ This function is intended to turn off PWE assertion and
+ put the device to D0 state if the device supports
+ PCI Power Management.
+
+ @param PciIoDevice PCI device instance.
+
+ @retval EFI_UNSUPPORTED PCI Device does not support power management.
+ @retval EFI_SUCCESS Turned off PWE successfully.
+
+**/
+EFI_STATUS
+ResetPowerManagementFeature (
+ IN PCI_IO_DEVICE *PciIoDevice
+ );
+
+#endif