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197 lines
7.6 KiB
C
197 lines
7.6 KiB
C
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/** @file
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The internal header file includes the common header files, defines
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internal structure and functions used by FTW module.
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Copyright (c) 2011 - 2018, Intel Corporation. All rights reserved. <BR>
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SPDX-License-Identifier: BSD-2-Clause-Patent
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**/
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#ifndef __SMM_FTW_DXE_H__
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#define __SMM_FTW_DXE_H__
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#include <PiDxe.h>
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#include <Protocol/SmmCommunication.h>
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#include <Library/UefiBootServicesTableLib.h>
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#include <Library/UefiDriverEntryPoint.h>
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#include <Library/DebugLib.h>
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#include <Library/BaseMemoryLib.h>
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#include <Library/UefiLib.h>
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#include <Library/BaseLib.h>
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#include <Library/MemoryAllocationLib.h>
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#include <Guid/EventGroup.h>
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#include "FaultTolerantWriteSmmCommon.h"
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/**
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Get the size of the largest block that can be updated in a fault-tolerant manner.
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@param[in] This Indicates a pointer to the calling context.
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@param[out] BlockSize A pointer to a caller-allocated UINTN that is
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updated to indicate the size of the largest block
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that can be updated.
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@retval EFI_SUCCESS The function completed successfully.
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@retval EFI_ABORTED The function could not complete successfully.
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**/
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EFI_STATUS
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EFIAPI
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FtwGetMaxBlockSize (
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IN EFI_FAULT_TOLERANT_WRITE_PROTOCOL *This,
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OUT UINTN *BlockSize
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);
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/**
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Allocates space for the protocol to maintain information about writes.
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Since writes must be completed in a fault-tolerant manner and multiple
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writes require more resources to be successful, this function
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enables the protocol to ensure that enough space exists to track
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information about upcoming writes.
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@param[in] This A pointer to the calling context.
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@param[in] CallerId The GUID identifying the write.
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@param[in] PrivateDataSize The size of the caller's private data that must be
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recorded for each write.
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@param[in] NumberOfWrites The number of fault tolerant block writes that will
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need to occur.
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@retval EFI_SUCCESS The function completed successfully
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@retval EFI_ABORTED The function could not complete successfully.
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@retval EFI_ACCESS_DENIED Not all allocated writes have been completed. All
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writes must be completed or aborted before another
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fault tolerant write can occur.
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**/
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EFI_STATUS
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EFIAPI
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FtwAllocate (
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IN EFI_FAULT_TOLERANT_WRITE_PROTOCOL *This,
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IN EFI_GUID *CallerId,
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IN UINTN PrivateDataSize,
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IN UINTN NumberOfWrites
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);
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/**
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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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@param[in] This The calling context.
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@param[in] Lba The logical block address of the target block.
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@param[in] Offset The offset within the target block to place the
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data.
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@param[in] Length The number of bytes to write to the target block.
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@param[in] PrivateData A pointer to private data that the caller requires
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to complete any pending writes in the event of a
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fault.
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@param[in] FvBlockHandle The handle of FVB protocol that provides services
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for reading, writing, and erasing the target block.
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@param[in] Buffer The data to write.
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@retval EFI_SUCCESS The function completed successfully.
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@retval EFI_ABORTED The function could not complete successfully.
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@retval EFI_BAD_BUFFER_SIZE The write would span a block boundary, which is not
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a valid action.
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@retval EFI_ACCESS_DENIED No writes have been allocated.
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@retval EFI_NOT_READY The last write has not been completed. Restart()
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must be called to complete it.
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**/
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EFI_STATUS
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EFIAPI
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FtwWrite (
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IN EFI_FAULT_TOLERANT_WRITE_PROTOCOL *This,
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IN EFI_LBA Lba,
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IN UINTN Offset,
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IN UINTN Length,
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IN VOID *PrivateData,
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IN EFI_HANDLE FvBlockHandle,
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IN VOID *Buffer
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);
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/**
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Restarts a previously interrupted write. The caller must provide the
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block protocol needed to complete the interrupted write.
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@param[in] This The calling context.
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@param[in] FvBlockHandle The handle of FVB protocol that provides services.
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@retval EFI_SUCCESS The function completed successfully.
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@retval EFI_ABORTED The function could not complete successfully.
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@retval EFI_ACCESS_DENIED No pending writes exist.
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**/
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EFI_STATUS
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EFIAPI
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FtwRestart (
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IN EFI_FAULT_TOLERANT_WRITE_PROTOCOL *This,
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IN EFI_HANDLE FvBlockHandle
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);
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/**
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Aborts all previously allocated writes.
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@param This The calling context.
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@retval EFI_SUCCESS The function completed successfully.
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@retval EFI_ABORTED The function could not complete successfully.
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@retval EFI_NOT_FOUND No allocated writes exist.
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**/
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EFI_STATUS
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EFIAPI
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FtwAbort (
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IN EFI_FAULT_TOLERANT_WRITE_PROTOCOL *This
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);
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/**
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Starts a target block update. This function records information about the write
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in fault-tolerant storage and completes 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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@param[in] This Indicates a pointer to the calling context.
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@param[out] CallerId The GUID identifying the last write.
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@param[out] Lba The logical block address of the last write.
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@param[out] Offset The offset within the block of the last write.
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@param[out] Length The length of the last write.
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@param[in, out] PrivateDataSize On input, the size of the PrivateData buffer. On
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output, the size of the private data stored for
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this write.
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@param[out] PrivateData A pointer to a buffer. The function will copy
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PrivateDataSize bytes from the private data stored
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for this write.
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@param[out] Complete A Boolean value with TRUE indicating that the write
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was completed.
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@retval EFI_SUCCESS The function completed successfully.
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@retval EFI_ABORTED The function could not complete successfully.
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@retval EFI_NOT_FOUND No allocated writes exist.
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**/
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EFI_STATUS
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EFIAPI
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FtwGetLastWrite (
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IN EFI_FAULT_TOLERANT_WRITE_PROTOCOL *This,
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OUT EFI_GUID *CallerId,
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OUT EFI_LBA *Lba,
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OUT UINTN *Offset,
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OUT UINTN *Length,
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IN OUT UINTN *PrivateDataSize,
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OUT VOID *PrivateData,
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OUT BOOLEAN *Complete
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);
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#endif
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