e3ba31da1c
https://bugzilla.tianocore.org/show_bug.cgi?id=1373 Replace BSD 2-Clause License with BSD+Patent License. This change is based on the following emails: https://lists.01.org/pipermail/edk2-devel/2019-February/036260.html https://lists.01.org/pipermail/edk2-devel/2018-October/030385.html RFCs with detailed process for the license change: V3: https://lists.01.org/pipermail/edk2-devel/2019-March/038116.html V2: https://lists.01.org/pipermail/edk2-devel/2019-March/037669.html V1: https://lists.01.org/pipermail/edk2-devel/2019-March/037500.html Contributed-under: TianoCore Contribution Agreement 1.1 Signed-off-by: Michael D Kinney <michael.d.kinney@intel.com> Reviewed-by: Ray Ni <ray.ni@intel.com>
744 lines
27 KiB
C
744 lines
27 KiB
C
/**@file
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Copyright (c) 2004 - 2018, Intel Corporation. All rights reserved.<BR>
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SPDX-License-Identifier: BSD-2-Clause-Patent
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bbe
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**/
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#include "EmuBlockIo.h"
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/**
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Reset the block device hardware.
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@param[in] This Indicates a pointer to the calling context.
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@param[in] ExtendedVerification Indicates that the driver may perform a more
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exhausive verfication operation of the device
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during reset.
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@retval EFI_SUCCESS The device was reset.
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@retval EFI_DEVICE_ERROR The device is not functioning properly and could
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not be reset.
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**/
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EFI_STATUS
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EFIAPI
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EmuBlockIo2Reset (
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IN EFI_BLOCK_IO2_PROTOCOL *This,
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IN BOOLEAN ExtendedVerification
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)
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{
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EFI_STATUS Status;
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EMU_BLOCK_IO_PRIVATE *Private;
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EFI_TPL OldTpl;
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Private = EMU_BLOCK_IO2_PRIVATE_DATA_FROM_THIS (This);
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OldTpl = gBS->RaiseTPL (TPL_CALLBACK);
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Status = Private->Io->Reset (Private->Io, ExtendedVerification);
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gBS->RestoreTPL (OldTpl);
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return Status;
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}
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/**
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Read BufferSize bytes from Lba into Buffer.
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This function reads the requested number of blocks from the device. All the
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blocks are read, or an error is returned.
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If EFI_DEVICE_ERROR, EFI_NO_MEDIA,_or EFI_MEDIA_CHANGED is returned and
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non-blocking I/O is being used, the Event associated with this request will
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not be signaled.
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@param[in] This Indicates a pointer to the calling context.
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@param[in] MediaId Id of the media, changes every time the media is
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replaced.
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@param[in] Lba The starting Logical Block Address to read from.
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@param[in, out] Token A pointer to the token associated with the transaction.
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@param[in] BufferSize Size of Buffer, must be a multiple of device block size.
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@param[out] Buffer A pointer to the destination buffer for the data. The
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caller is responsible for either having implicit or
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explicit ownership of the buffer.
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@retval EFI_SUCCESS The read request was queued if Token->Event is
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not NULL.The data was read correctly from the
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device if the Token->Event is NULL.
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@retval EFI_DEVICE_ERROR The device reported an error while performing
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the read.
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@retval EFI_NO_MEDIA There is no media in the device.
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@retval EFI_MEDIA_CHANGED The MediaId is not for the current media.
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@retval EFI_BAD_BUFFER_SIZE The BufferSize parameter is not a multiple of the
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intrinsic block size of the device.
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@retval EFI_INVALID_PARAMETER The read request contains LBAs that are not valid,
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or the buffer is not on proper alignment.
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@retval EFI_OUT_OF_RESOURCES The request could not be completed due to a lack
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of resources.
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**/
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EFI_STATUS
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EFIAPI
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EmuBlockIo2ReadBlocksEx (
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IN EFI_BLOCK_IO2_PROTOCOL *This,
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IN UINT32 MediaId,
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IN EFI_LBA LBA,
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IN OUT EFI_BLOCK_IO2_TOKEN *Token,
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IN UINTN BufferSize,
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OUT VOID *Buffer
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)
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{
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EFI_STATUS Status;
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EMU_BLOCK_IO_PRIVATE *Private;
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EFI_TPL OldTpl;
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Private = EMU_BLOCK_IO2_PRIVATE_DATA_FROM_THIS (This);
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OldTpl = gBS->RaiseTPL (TPL_CALLBACK);
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Status = Private->Io->ReadBlocks (Private->Io, MediaId, LBA, Token, BufferSize, Buffer);
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gBS->RestoreTPL (OldTpl);
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return Status;
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}
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/**
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Write BufferSize bytes from Lba into Buffer.
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This function writes the requested number of blocks to the device. All blocks
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are written, or an error is returned.If EFI_DEVICE_ERROR, EFI_NO_MEDIA,
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EFI_WRITE_PROTECTED or EFI_MEDIA_CHANGED is returned and non-blocking I/O is
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being used, the Event associated with this request will not be signaled.
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@param[in] This Indicates a pointer to the calling context.
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@param[in] MediaId The media ID that the write request is for.
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@param[in] Lba The starting logical block address to be written. The
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caller is responsible for writing to only legitimate
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locations.
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@param[in, out] Token A pointer to the token associated with the transaction.
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@param[in] BufferSize Size of Buffer, must be a multiple of device block size.
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@param[in] Buffer A pointer to the source buffer for the data.
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@retval EFI_SUCCESS The write request was queued if Event is not NULL.
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The data was written correctly to the device if
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the Event is NULL.
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@retval EFI_WRITE_PROTECTED The device can not be written to.
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@retval EFI_NO_MEDIA There is no media in the device.
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@retval EFI_MEDIA_CHNAGED The MediaId does not matched the current device.
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@retval EFI_DEVICE_ERROR The device reported an error while performing the write.
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@retval EFI_BAD_BUFFER_SIZE The Buffer was not a multiple of the block size of the device.
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@retval EFI_INVALID_PARAMETER The write request contains LBAs that are not valid,
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or the buffer is not on proper alignment.
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@retval EFI_OUT_OF_RESOURCES The request could not be completed due to a lack
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of resources.
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**/
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EFI_STATUS
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EFIAPI
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EmuBlockIo2WriteBlocksEx (
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IN EFI_BLOCK_IO2_PROTOCOL *This,
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IN UINT32 MediaId,
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IN EFI_LBA LBA,
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IN OUT EFI_BLOCK_IO2_TOKEN *Token,
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IN UINTN BufferSize,
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IN VOID *Buffer
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)
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{
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EFI_STATUS Status;
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EMU_BLOCK_IO_PRIVATE *Private;
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EFI_TPL OldTpl;
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Private = EMU_BLOCK_IO2_PRIVATE_DATA_FROM_THIS (This);
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OldTpl = gBS->RaiseTPL (TPL_CALLBACK);
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Status = Private->Io->WriteBlocks (Private->Io, MediaId, LBA, Token, BufferSize, Buffer);
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gBS->RestoreTPL (OldTpl);
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return Status;
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}
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/**
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Flush the Block Device.
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If EFI_DEVICE_ERROR, EFI_NO_MEDIA,_EFI_WRITE_PROTECTED or EFI_MEDIA_CHANGED
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is returned and non-blocking I/O is being used, the Event associated with
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this request will not be signaled.
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@param[in] This Indicates a pointer to the calling context.
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@param[in,out] Token A pointer to the token associated with the transaction
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@retval EFI_SUCCESS The flush request was queued if Event is not NULL.
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All outstanding data was written correctly to the
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device if the Event is NULL.
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@retval EFI_DEVICE_ERROR The device reported an error while writting back
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the data.
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@retval EFI_WRITE_PROTECTED The device cannot be written to.
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@retval EFI_NO_MEDIA There is no media in the device.
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@retval EFI_MEDIA_CHANGED The MediaId is not for the current media.
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@retval EFI_OUT_OF_RESOURCES The request could not be completed due to a lack
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of resources.
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**/
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EFI_STATUS
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EFIAPI
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EmuBlockIo2Flush (
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IN EFI_BLOCK_IO2_PROTOCOL *This,
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IN OUT EFI_BLOCK_IO2_TOKEN *Token
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)
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{
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EFI_STATUS Status;
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EMU_BLOCK_IO_PRIVATE *Private;
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EFI_TPL OldTpl;
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Private = EMU_BLOCK_IO2_PRIVATE_DATA_FROM_THIS (This);
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OldTpl = gBS->RaiseTPL (TPL_CALLBACK);
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Status = Private->Io->FlushBlocks (Private->Io, Token);
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gBS->RestoreTPL (OldTpl);
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return Status;
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}
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/**
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Reset the Block Device.
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@param This Indicates a pointer to the calling context.
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@param ExtendedVerification Driver may perform diagnostics on reset.
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@retval EFI_SUCCESS The device was reset.
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@retval EFI_DEVICE_ERROR The device is not functioning properly and could
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not be reset.
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**/
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EFI_STATUS
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EFIAPI
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EmuBlockIoReset (
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IN EFI_BLOCK_IO_PROTOCOL *This,
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IN BOOLEAN ExtendedVerification
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)
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{
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EFI_STATUS Status;
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EMU_BLOCK_IO_PRIVATE *Private;
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EFI_TPL OldTpl;
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Private = EMU_BLOCK_IO_PRIVATE_DATA_FROM_THIS (This);
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OldTpl = gBS->RaiseTPL (TPL_CALLBACK);
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Status = Private->Io->Reset (Private->Io, ExtendedVerification);
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gBS->RestoreTPL (OldTpl);
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return Status;
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}
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/**
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Read BufferSize bytes from Lba into Buffer.
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@param This Indicates a pointer to the calling context.
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@param MediaId Id of the media, changes every time the media is replaced.
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@param Lba The starting Logical Block Address to read from
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@param BufferSize Size of Buffer, must be a multiple of device block size.
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@param Buffer A pointer to the destination buffer for the data. The caller is
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responsible for either having implicit or explicit ownership of the buffer.
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@retval EFI_SUCCESS The data was read correctly from the device.
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@retval EFI_DEVICE_ERROR The device reported an error while performing the read.
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@retval EFI_NO_MEDIA There is no media in the device.
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@retval EFI_MEDIA_CHANGED The MediaId does not matched the current device.
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@retval EFI_BAD_BUFFER_SIZE The Buffer was not a multiple of the block size of the device.
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@retval EFI_INVALID_PARAMETER The read request contains LBAs that are not valid,
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or the buffer is not on proper alignment.
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**/
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EFI_STATUS
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EFIAPI
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EmuBlockIoReadBlocks (
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IN EFI_BLOCK_IO_PROTOCOL *This,
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IN UINT32 MediaId,
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IN EFI_LBA Lba,
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IN UINTN BufferSize,
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OUT VOID *Buffer
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)
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{
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EFI_STATUS Status;
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EMU_BLOCK_IO_PRIVATE *Private;
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EFI_TPL OldTpl;
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EFI_BLOCK_IO2_TOKEN Token;
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Private = EMU_BLOCK_IO_PRIVATE_DATA_FROM_THIS (This);
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OldTpl = gBS->RaiseTPL (TPL_CALLBACK);
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Token.Event = NULL;
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Status = Private->Io->ReadBlocks (Private->Io, MediaId, Lba, &Token, BufferSize, Buffer);
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gBS->RestoreTPL (OldTpl);
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return Status;
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}
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/**
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Write BufferSize bytes from Lba into Buffer.
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@param This Indicates a pointer to the calling context.
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@param MediaId The media ID that the write request is for.
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@param Lba The starting logical block address to be written. The caller is
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responsible for writing to only legitimate locations.
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@param BufferSize Size of Buffer, must be a multiple of device block size.
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@param Buffer A pointer to the source buffer for the data.
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@retval EFI_SUCCESS The data was written correctly to the device.
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@retval EFI_WRITE_PROTECTED The device can not be written to.
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@retval EFI_DEVICE_ERROR The device reported an error while performing the write.
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@retval EFI_NO_MEDIA There is no media in the device.
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@retval EFI_MEDIA_CHNAGED The MediaId does not matched the current device.
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@retval EFI_BAD_BUFFER_SIZE The Buffer was not a multiple of the block size of the device.
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@retval EFI_INVALID_PARAMETER The write request contains LBAs that are not valid,
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or the buffer is not on proper alignment.
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**/
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EFI_STATUS
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EFIAPI
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EmuBlockIoWriteBlocks (
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IN EFI_BLOCK_IO_PROTOCOL *This,
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IN UINT32 MediaId,
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IN EFI_LBA Lba,
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IN UINTN BufferSize,
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IN VOID *Buffer
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)
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{
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EFI_STATUS Status;
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EMU_BLOCK_IO_PRIVATE *Private;
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EFI_TPL OldTpl;
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EFI_BLOCK_IO2_TOKEN Token;
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Private = EMU_BLOCK_IO_PRIVATE_DATA_FROM_THIS (This);
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OldTpl = gBS->RaiseTPL (TPL_CALLBACK);
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Token.Event = NULL;
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Status = Private->Io->WriteBlocks (Private->Io, MediaId, Lba, &Token, BufferSize, Buffer);
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gBS->RestoreTPL (OldTpl);
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return Status;
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}
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/**
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Flush the Block Device.
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@param This Indicates a pointer to the calling context.
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@retval EFI_SUCCESS All outstanding data was written to the device
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@retval EFI_DEVICE_ERROR The device reported an error while writting back the data
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@retval EFI_NO_MEDIA There is no media in the device.
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**/
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EFI_STATUS
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EFIAPI
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EmuBlockIoFlushBlocks (
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IN EFI_BLOCK_IO_PROTOCOL *This
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)
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{
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EFI_STATUS Status;
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EMU_BLOCK_IO_PRIVATE *Private;
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EFI_TPL OldTpl;
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EFI_BLOCK_IO2_TOKEN Token;
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Private = EMU_BLOCK_IO_PRIVATE_DATA_FROM_THIS (This);
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OldTpl = gBS->RaiseTPL (TPL_CALLBACK);
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Token.Event = NULL;
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Status = Private->Io->FlushBlocks (Private->Io, &Token);
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gBS->RestoreTPL (OldTpl);
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return Status;
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}
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/**
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Tests to see if this driver supports a given controller. If a child device is provided,
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it further tests to see if this driver supports creating a handle for the specified child device.
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This function checks to see if the driver specified by This supports the device specified by
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ControllerHandle. Drivers will typically use the device path attached to
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ControllerHandle and/or the services from the bus I/O abstraction attached to
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ControllerHandle to determine if the driver supports ControllerHandle. This function
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may be called many times during platform initialization. In order to reduce boot times, the tests
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performed by this function must be very small, and take as little time as possible to execute. This
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function must not change the state of any hardware devices, and this function must be aware that the
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device specified by ControllerHandle may already be managed by the same driver or a
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different driver. This function must match its calls to AllocatePages() with FreePages(),
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AllocatePool() with FreePool(), and OpenProtocol() with CloseProtocol().
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Because ControllerHandle may have been previously started by the same driver, if a protocol is
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already in the opened state, then it must not be closed with CloseProtocol(). This is required
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to guarantee the state of ControllerHandle is not modified by this function.
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@param[in] This A pointer to the EFI_DRIVER_BINDING_PROTOCOL instance.
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@param[in] ControllerHandle The handle of the controller to test. This handle
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must support a protocol interface that supplies
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an I/O abstraction to the driver.
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@param[in] RemainingDevicePath A pointer to the remaining portion of a device path. This
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parameter is ignored by device drivers, and is optional for bus
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drivers. For bus drivers, if this parameter is not NULL, then
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the bus driver must determine if the bus controller specified
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by ControllerHandle and the child controller specified
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by RemainingDevicePath are both supported by this
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bus driver.
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@retval EFI_SUCCESS The device specified by ControllerHandle and
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RemainingDevicePath is supported by the driver specified by This.
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@retval EFI_ALREADY_STARTED The device specified by ControllerHandle and
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RemainingDevicePath is already being managed by the driver
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specified by This.
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@retval EFI_ACCESS_DENIED The device specified by ControllerHandle and
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RemainingDevicePath is already being managed by a different
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driver or an application that requires exclusive access.
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Currently not implemented.
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@retval EFI_UNSUPPORTED The device specified by ControllerHandle and
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RemainingDevicePath is not supported by the driver specified by This.
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**/
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EFI_STATUS
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EFIAPI
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EmuBlockIoDriverBindingSupported (
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IN EFI_DRIVER_BINDING_PROTOCOL *This,
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IN EFI_HANDLE Handle,
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IN EFI_DEVICE_PATH_PROTOCOL *RemainingDevicePath
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)
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{
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EFI_STATUS Status;
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EMU_IO_THUNK_PROTOCOL *EmuIoThunk;
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//
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// Open the IO Abstraction(s) needed to perform the supported test
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//
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Status = gBS->OpenProtocol (
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Handle,
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&gEmuIoThunkProtocolGuid,
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(VOID **)&EmuIoThunk,
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This->DriverBindingHandle,
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Handle,
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EFI_OPEN_PROTOCOL_BY_DRIVER
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);
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if (EFI_ERROR (Status)) {
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return Status;
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}
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//
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// Make sure GUID is for a File System handle.
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//
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Status = EFI_UNSUPPORTED;
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if (CompareGuid (EmuIoThunk->Protocol, &gEmuBlockIoProtocolGuid)) {
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Status = EFI_SUCCESS;
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}
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//
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// Close the I/O Abstraction(s) used to perform the supported test
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//
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gBS->CloseProtocol (
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Handle,
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&gEmuIoThunkProtocolGuid,
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This->DriverBindingHandle,
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Handle
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);
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return Status;
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}
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/**
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Starts a device controller or a bus controller.
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The Start() function is designed to be invoked from the EFI boot service ConnectController().
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As a result, much of the error checking on the parameters to Start() has been moved into this
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common boot service. It is legal to call Start() from other locations,
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but the following calling restrictions must be followed, or the system behavior will not be deterministic.
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1. ControllerHandle must be a valid EFI_HANDLE.
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2. If RemainingDevicePath is not NULL, then it must be a pointer to a naturally aligned
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EFI_DEVICE_PATH_PROTOCOL.
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3. Prior to calling Start(), the Supported() function for the driver specified by This must
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have been called with the same calling parameters, and Supported() must have returned EFI_SUCCESS.
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@param[in] This A pointer to the EFI_DRIVER_BINDING_PROTOCOL instance.
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@param[in] ControllerHandle The handle of the controller to start. This handle
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must support a protocol interface that supplies
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an I/O abstraction to the driver.
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@param[in] RemainingDevicePath A pointer to the remaining portion of a device path. This
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parameter is ignored by device drivers, and is optional for bus
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drivers. For a bus driver, if this parameter is NULL, then handles
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for all the children of Controller are created by this driver.
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If this parameter is not NULL and the first Device Path Node is
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not the End of Device Path Node, then only the handle for the
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child device specified by the first Device Path Node of
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RemainingDevicePath is created by this driver.
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If the first Device Path Node of RemainingDevicePath is
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the End of Device Path Node, no child handle is created by this
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driver.
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@retval EFI_SUCCESS The device was started.
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@retval EFI_DEVICE_ERROR The device could not be started due to a device error.Currently not implemented.
|
|
@retval EFI_OUT_OF_RESOURCES The request could not be completed due to a lack of resources.
|
|
@retval Others The driver failded to start the device.
|
|
|
|
**/
|
|
EFI_STATUS
|
|
EFIAPI
|
|
EmuBlockIoDriverBindingStart (
|
|
IN EFI_DRIVER_BINDING_PROTOCOL *This,
|
|
IN EFI_HANDLE Handle,
|
|
IN EFI_DEVICE_PATH_PROTOCOL *RemainingDevicePath
|
|
)
|
|
{
|
|
EFI_STATUS Status;
|
|
EMU_IO_THUNK_PROTOCOL *EmuIoThunk;
|
|
EMU_BLOCK_IO_PRIVATE *Private = NULL;
|
|
|
|
//
|
|
// Grab the protocols we need
|
|
//
|
|
|
|
Status = gBS->OpenProtocol (
|
|
Handle,
|
|
&gEmuIoThunkProtocolGuid,
|
|
(void *)&EmuIoThunk,
|
|
This->DriverBindingHandle,
|
|
Handle,
|
|
EFI_OPEN_PROTOCOL_BY_DRIVER
|
|
);
|
|
if (EFI_ERROR (Status)) {
|
|
return Status;
|
|
}
|
|
|
|
if (!CompareGuid (EmuIoThunk->Protocol, &gEmuBlockIoProtocolGuid)) {
|
|
Status = EFI_UNSUPPORTED;
|
|
goto Done;
|
|
}
|
|
|
|
Status = EmuIoThunk->Open (EmuIoThunk);
|
|
if (EFI_ERROR (Status)) {
|
|
goto Done;
|
|
}
|
|
|
|
Private = AllocatePool (sizeof (EMU_BLOCK_IO_PRIVATE));
|
|
if (Private == NULL) {
|
|
goto Done;
|
|
}
|
|
|
|
Private->Signature = EMU_BLOCK_IO_PRIVATE_SIGNATURE;
|
|
Private->IoThunk = EmuIoThunk;
|
|
Private->Io = EmuIoThunk->Interface;
|
|
Private->EfiHandle = Handle;
|
|
|
|
Private->BlockIo.Revision = EFI_BLOCK_IO_PROTOCOL_REVISION2;
|
|
Private->BlockIo.Media = &Private->Media;
|
|
Private->BlockIo.Reset = EmuBlockIoReset;
|
|
Private->BlockIo.ReadBlocks = EmuBlockIoReadBlocks;
|
|
Private->BlockIo.WriteBlocks = EmuBlockIoWriteBlocks;
|
|
Private->BlockIo.FlushBlocks = EmuBlockIoFlushBlocks;
|
|
|
|
Private->BlockIo2.Media = &Private->Media;
|
|
Private->BlockIo2.Reset = EmuBlockIo2Reset;
|
|
Private->BlockIo2.ReadBlocksEx = EmuBlockIo2ReadBlocksEx;
|
|
Private->BlockIo2.WriteBlocksEx = EmuBlockIo2WriteBlocksEx;
|
|
Private->BlockIo2.FlushBlocksEx = EmuBlockIo2Flush;
|
|
|
|
Private->ControllerNameTable = NULL;
|
|
|
|
Status = Private->Io->CreateMapping (Private->Io, &Private->Media);
|
|
if (EFI_ERROR (Status)) {
|
|
goto Done;
|
|
}
|
|
|
|
AddUnicodeString2 (
|
|
"eng",
|
|
gEmuBlockIoComponentName.SupportedLanguages,
|
|
&Private->ControllerNameTable,
|
|
EmuIoThunk->ConfigString,
|
|
TRUE
|
|
);
|
|
|
|
AddUnicodeString2 (
|
|
"en",
|
|
gEmuBlockIoComponentName2.SupportedLanguages,
|
|
&Private->ControllerNameTable,
|
|
EmuIoThunk->ConfigString,
|
|
FALSE
|
|
);
|
|
|
|
Status = gBS->InstallMultipleProtocolInterfaces (
|
|
&Handle,
|
|
&gEfiBlockIoProtocolGuid, &Private->BlockIo,
|
|
&gEfiBlockIo2ProtocolGuid, &Private->BlockIo2,
|
|
NULL
|
|
);
|
|
|
|
Done:
|
|
if (EFI_ERROR (Status)) {
|
|
if (Private != NULL) {
|
|
if (Private->ControllerNameTable != NULL) {
|
|
FreeUnicodeStringTable (Private->ControllerNameTable);
|
|
}
|
|
|
|
gBS->FreePool (Private);
|
|
|
|
}
|
|
|
|
gBS->CloseProtocol (
|
|
Handle,
|
|
&gEmuIoThunkProtocolGuid,
|
|
This->DriverBindingHandle,
|
|
Handle
|
|
);
|
|
}
|
|
|
|
return Status;
|
|
}
|
|
|
|
|
|
/**
|
|
Stops a device controller or a bus controller.
|
|
|
|
The Stop() function is designed to be invoked from the EFI boot service DisconnectController().
|
|
As a result, much of the error checking on the parameters to Stop() has been moved
|
|
into this common boot service. It is legal to call Stop() from other locations,
|
|
but the following calling restrictions must be followed, or the system behavior will not be deterministic.
|
|
1. ControllerHandle must be a valid EFI_HANDLE that was used on a previous call to this
|
|
same driver's Start() function.
|
|
2. The first NumberOfChildren handles of ChildHandleBuffer must all be a valid
|
|
EFI_HANDLE. In addition, all of these handles must have been created in this driver's
|
|
Start() function, and the Start() function must have called OpenProtocol() on
|
|
ControllerHandle with an Attribute of EFI_OPEN_PROTOCOL_BY_CHILD_CONTROLLER.
|
|
|
|
@param[in] This A pointer to the EFI_DRIVER_BINDING_PROTOCOL instance.
|
|
@param[in] ControllerHandle A handle to the device being stopped. The handle must
|
|
support a bus specific I/O protocol for the driver
|
|
to use to stop the device.
|
|
@param[in] NumberOfChildren The number of child device handles in ChildHandleBuffer.
|
|
@param[in] ChildHandleBuffer An array of child handles to be freed. May be NULL
|
|
if NumberOfChildren is 0.
|
|
|
|
@retval EFI_SUCCESS The device was stopped.
|
|
@retval EFI_DEVICE_ERROR The device could not be stopped due to a device error.
|
|
|
|
**/
|
|
EFI_STATUS
|
|
EFIAPI
|
|
EmuBlockIoDriverBindingStop (
|
|
IN EFI_DRIVER_BINDING_PROTOCOL *This,
|
|
IN EFI_HANDLE Handle,
|
|
IN UINTN NumberOfChildren,
|
|
IN EFI_HANDLE *ChildHandleBuffer
|
|
)
|
|
{
|
|
EFI_BLOCK_IO_PROTOCOL *BlockIo;
|
|
EFI_STATUS Status;
|
|
EMU_BLOCK_IO_PRIVATE *Private;
|
|
|
|
//
|
|
// Get our context back
|
|
//
|
|
Status = gBS->OpenProtocol (
|
|
Handle,
|
|
&gEfiBlockIoProtocolGuid,
|
|
(void *)&BlockIo,
|
|
This->DriverBindingHandle,
|
|
Handle,
|
|
EFI_OPEN_PROTOCOL_GET_PROTOCOL
|
|
);
|
|
if (EFI_ERROR (Status)) {
|
|
return EFI_UNSUPPORTED;
|
|
}
|
|
|
|
Private = EMU_BLOCK_IO_PRIVATE_DATA_FROM_THIS (BlockIo);
|
|
|
|
Status = gBS->UninstallMultipleProtocolInterfaces (
|
|
Private->EfiHandle,
|
|
&gEfiBlockIoProtocolGuid, &Private->BlockIo,
|
|
&gEfiBlockIo2ProtocolGuid, &Private->BlockIo2,
|
|
NULL
|
|
);
|
|
if (!EFI_ERROR (Status)) {
|
|
Status = gBS->CloseProtocol (
|
|
Handle,
|
|
&gEmuIoThunkProtocolGuid,
|
|
This->DriverBindingHandle,
|
|
Handle
|
|
);
|
|
ASSERT_EFI_ERROR (Status);
|
|
//
|
|
// Destroy the IO interface.
|
|
//
|
|
Status = Private->IoThunk->Close (Private->IoThunk);
|
|
ASSERT_EFI_ERROR (Status);
|
|
//
|
|
// Free our instance data
|
|
//
|
|
FreeUnicodeStringTable (Private->ControllerNameTable);
|
|
FreePool (Private);
|
|
}
|
|
|
|
return Status;
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
EFI_DRIVER_BINDING_PROTOCOL gEmuBlockIoDriverBinding = {
|
|
EmuBlockIoDriverBindingSupported,
|
|
EmuBlockIoDriverBindingStart,
|
|
EmuBlockIoDriverBindingStop,
|
|
0xa,
|
|
NULL,
|
|
NULL
|
|
};
|
|
|
|
|
|
|
|
|
|
/**
|
|
The user Entry Point for module EmuBlockIo . The user code starts with this function.
|
|
|
|
@param[in] ImageHandle The firmware allocated handle for the EFI image.
|
|
@param[in] SystemTable A pointer to the EFI System Table.
|
|
|
|
@retval EFI_SUCCESS The entry point is executed successfully.
|
|
@retval other Some error occurs when executing this entry point.
|
|
|
|
**/
|
|
EFI_STATUS
|
|
EFIAPI
|
|
InitializeEmuBlockIo (
|
|
IN EFI_HANDLE ImageHandle,
|
|
IN EFI_SYSTEM_TABLE *SystemTable
|
|
)
|
|
{
|
|
EFI_STATUS Status;
|
|
|
|
Status = EfiLibInstallAllDriverProtocols2 (
|
|
ImageHandle,
|
|
SystemTable,
|
|
&gEmuBlockIoDriverBinding,
|
|
ImageHandle,
|
|
&gEmuBlockIoComponentName,
|
|
&gEmuBlockIoComponentName2,
|
|
NULL,
|
|
NULL,
|
|
&gEmuBlockIoDriverDiagnostics,
|
|
&gEmuBlockIoDriverDiagnostics2
|
|
);
|
|
ASSERT_EFI_ERROR (Status);
|
|
|
|
|
|
return Status;
|
|
}
|
|
|
|
|
|
|