mirror of https://github.com/acidanthera/audk.git
89 lines
3.0 KiB
C
89 lines
3.0 KiB
C
/*++
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Copyright (c) 2004, Intel Corporation
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All rights reserved. This program and the accompanying materials
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are licensed and made available under the terms and conditions of the BSD License
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which accompanies this distribution. The full text of the license may be found at
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http://opensource.org/licenses/bsd-license.php
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THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
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WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
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Module Name:
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FaultTolerantWriteLite.h
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Abstract:
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This is a simple fault tolerant write driver, based on PlatformFd library.
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And it only supports write BufferSize <= SpareAreaLength.
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--*/
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#ifndef _FW_FAULT_TOLERANT_WRITE_LITE_PROTOCOL_H_
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#define _FW_FAULT_TOLERANT_WRITE_LITE_PROTOCOL_H_
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#define EFI_FTW_LITE_PROTOCOL_GUID \
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{ 0x3f557189, 0x8dae, 0x45ae, {0xa0, 0xb3, 0x2b, 0x99, 0xca, 0x7a, 0xa7, 0xa0} }
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//
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// Forward reference for pure ANSI compatability
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//
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EFI_FORWARD_DECLARATION (EFI_FTW_LITE_PROTOCOL);
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//
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// Protocol API definitions
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//
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typedef
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EFI_STATUS
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(EFIAPI * EFI_FTW_LITE_WRITE) (
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IN EFI_FTW_LITE_PROTOCOL *This,
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IN EFI_HANDLE FvbHandle,
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IN EFI_LBA Lba,
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IN UINTN Offset,
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IN UINTN *NumBytes,
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IN VOID *Buffer
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);
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/*++
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Routine Description:
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Starts a target block update. This records information about the write
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in fault tolerant storage and will complete the write in a recoverable
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manner, ensuring at all times that either the original contents or
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the modified contents are available.
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Arguments:
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This - Calling context
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FvBlockHandle - The handle of FVB protocol that provides services for
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reading, writing, and erasing the target block.
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Lba - The logical block address of the target block.
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Offset - The offset within the target block to place the data.
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Length - The number of bytes to write to the target block.
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Buffer - The data to write.
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Returns:
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EFI_SUCCESS - The function completed successfully
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EFI_ABORTED - The function could not complete successfully.
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EFI_BAD_BUFFER_SIZE - The write would span a block boundary,
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which is not a valid action.
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EFI_ACCESS_DENIED - No writes have been allocated.
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EFI_NOT_READY - The last write has not been completed.
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Restart () must be called to complete it.
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--*/
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//
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// Protocol declaration
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//
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struct _EFI_FTW_LITE_PROTOCOL {
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EFI_FTW_LITE_WRITE Write;
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};
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extern EFI_GUID gEfiFaultTolerantWriteLiteProtocolGuid;
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#endif
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