diff options
Diffstat (limited to 'EmulatorPkg/EmuBlockIoDxe/EmuBlockIo.c')
| -rw-r--r-- | EmulatorPkg/EmuBlockIoDxe/EmuBlockIo.c | 747 |
1 files changed, 0 insertions, 747 deletions
diff --git a/EmulatorPkg/EmuBlockIoDxe/EmuBlockIo.c b/EmulatorPkg/EmuBlockIoDxe/EmuBlockIo.c deleted file mode 100644 index e77de2c7bc..0000000000 --- a/EmulatorPkg/EmuBlockIoDxe/EmuBlockIo.c +++ /dev/null @@ -1,747 +0,0 @@ -/**@file
-
-Copyright (c) 2004 - 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.
-bbe
-**/
-
-#include "EmuBlockIo.h"
-
-
-/**
- Reset the block device hardware.
-
- @param[in] This Indicates a pointer to the calling context.
- @param[in] ExtendedVerification Indicates that the driver may perform a more
- exhausive verfication operation of the device
- during reset.
-
- @retval EFI_SUCCESS The device was reset.
- @retval EFI_DEVICE_ERROR The device is not functioning properly and could
- not be reset.
-
-**/
-EFI_STATUS
-EFIAPI
-EmuBlockIo2Reset (
- IN EFI_BLOCK_IO2_PROTOCOL *This,
- IN BOOLEAN ExtendedVerification
- )
-{
- EFI_STATUS Status;
- EMU_BLOCK_IO_PRIVATE *Private;
- EFI_TPL OldTpl;
-
- Private = EMU_BLOCK_IO2_PRIVATE_DATA_FROM_THIS (This);
-
- OldTpl = gBS->RaiseTPL (TPL_CALLBACK);
-
- Status = Private->Io->Reset (Private->Io, ExtendedVerification);
-
- gBS->RestoreTPL (OldTpl);
- return Status;
-}
-
-/**
- Read BufferSize bytes from Lba into Buffer.
-
- This function reads the requested number of blocks from the device. All the
- blocks are read, or an error is returned.
- If EFI_DEVICE_ERROR, EFI_NO_MEDIA,_or EFI_MEDIA_CHANGED is returned and
- non-blocking I/O is being used, the Event associated with this request will
- not be signaled.
-
- @param[in] This Indicates a pointer to the calling context.
- @param[in] MediaId Id of the media, changes every time the media is
- replaced.
- @param[in] Lba The starting Logical Block Address to read from.
- @param[in, out] Token A pointer to the token associated with the transaction.
- @param[in] BufferSize Size of Buffer, must be a multiple of device block size.
- @param[out] Buffer A pointer to the destination buffer for the data. The
- caller is responsible for either having implicit or
- explicit ownership of the buffer.
-
- @retval EFI_SUCCESS The read request was queued if Token->Event is
- not NULL.The data was read correctly from the
- device if the Token->Event is NULL.
- @retval EFI_DEVICE_ERROR The device reported an error while performing
- the read.
- @retval EFI_NO_MEDIA There is no media in the device.
- @retval EFI_MEDIA_CHANGED The MediaId is not for the current media.
- @retval EFI_BAD_BUFFER_SIZE The BufferSize parameter is not a multiple of the
- intrinsic block size of the device.
- @retval EFI_INVALID_PARAMETER The read request contains LBAs that are not valid,
- or the buffer is not on proper alignment.
- @retval EFI_OUT_OF_RESOURCES The request could not be completed due to a lack
- of resources.
-**/
-EFI_STATUS
-EFIAPI
-EmuBlockIo2ReadBlocksEx (
- IN EFI_BLOCK_IO2_PROTOCOL *This,
- IN UINT32 MediaId,
- IN EFI_LBA LBA,
- IN OUT EFI_BLOCK_IO2_TOKEN *Token,
- IN UINTN BufferSize,
- OUT VOID *Buffer
- )
-{
- EFI_STATUS Status;
- EMU_BLOCK_IO_PRIVATE *Private;
- EFI_TPL OldTpl;
-
- Private = EMU_BLOCK_IO2_PRIVATE_DATA_FROM_THIS (This);
-
- OldTpl = gBS->RaiseTPL (TPL_CALLBACK);
-
- Status = Private->Io->ReadBlocks (Private->Io, MediaId, LBA, Token, BufferSize, Buffer);
-
- gBS->RestoreTPL (OldTpl);
- return Status;
-}
-
-
-/**
- Write BufferSize bytes from Lba into Buffer.
-
- This function writes the requested number of blocks to the device. All blocks
- are written, or an error is returned.If EFI_DEVICE_ERROR, EFI_NO_MEDIA,
- EFI_WRITE_PROTECTED or EFI_MEDIA_CHANGED is returned and non-blocking I/O is
- being used, the Event associated with this request will not be signaled.
-
- @param[in] This Indicates a pointer to the calling context.
- @param[in] MediaId The media ID that the write request is for.
- @param[in] Lba The starting logical block address to be written. The
- caller is responsible for writing to only legitimate
- locations.
- @param[in, out] Token A pointer to the token associated with the transaction.
- @param[in] BufferSize Size of Buffer, must be a multiple of device block size.
- @param[in] Buffer A pointer to the source buffer for the data.
-
- @retval EFI_SUCCESS The write request was queued if Event is not NULL.
- The data was written correctly to the device if
- the Event is NULL.
- @retval EFI_WRITE_PROTECTED The device can not be written to.
- @retval EFI_NO_MEDIA There is no media in the device.
- @retval EFI_MEDIA_CHNAGED The MediaId does not matched the current device.
- @retval EFI_DEVICE_ERROR The device reported an error while performing the write.
- @retval EFI_BAD_BUFFER_SIZE The Buffer was not a multiple of the block size of the device.
- @retval EFI_INVALID_PARAMETER The write request contains LBAs that are not valid,
- or the buffer is not on proper alignment.
- @retval EFI_OUT_OF_RESOURCES The request could not be completed due to a lack
- of resources.
-
-**/
-EFI_STATUS
-EFIAPI
-EmuBlockIo2WriteBlocksEx (
- IN EFI_BLOCK_IO2_PROTOCOL *This,
- IN UINT32 MediaId,
- IN EFI_LBA LBA,
- IN OUT EFI_BLOCK_IO2_TOKEN *Token,
- IN UINTN BufferSize,
- IN VOID *Buffer
- )
-{
- EFI_STATUS Status;
- EMU_BLOCK_IO_PRIVATE *Private;
- EFI_TPL OldTpl;
-
- Private = EMU_BLOCK_IO2_PRIVATE_DATA_FROM_THIS (This);
-
- OldTpl = gBS->RaiseTPL (TPL_CALLBACK);
-
- Status = Private->Io->WriteBlocks (Private->Io, MediaId, LBA, Token, BufferSize, Buffer);
-
- gBS->RestoreTPL (OldTpl);
- return Status;
-}
-
-
-
-/**
- Flush the Block Device.
-
- If EFI_DEVICE_ERROR, EFI_NO_MEDIA,_EFI_WRITE_PROTECTED or EFI_MEDIA_CHANGED
- is returned and non-blocking I/O is being used, the Event associated with
- this request will not be signaled.
-
- @param[in] This Indicates a pointer to the calling context.
- @param[in,out] Token A pointer to the token associated with the transaction
-
- @retval EFI_SUCCESS The flush request was queued if Event is not NULL.
- All outstanding data was written correctly to the
- device if the Event is NULL.
- @retval EFI_DEVICE_ERROR The device reported an error while writting back
- the data.
- @retval EFI_WRITE_PROTECTED The device cannot be written to.
- @retval EFI_NO_MEDIA There is no media in the device.
- @retval EFI_MEDIA_CHANGED The MediaId is not for the current media.
- @retval EFI_OUT_OF_RESOURCES The request could not be completed due to a lack
- of resources.
-
-**/
-EFI_STATUS
-EFIAPI
-EmuBlockIo2Flush (
- IN EFI_BLOCK_IO2_PROTOCOL *This,
- IN OUT EFI_BLOCK_IO2_TOKEN *Token
- )
-{
- EFI_STATUS Status;
- EMU_BLOCK_IO_PRIVATE *Private;
- EFI_TPL OldTpl;
-
- Private = EMU_BLOCK_IO2_PRIVATE_DATA_FROM_THIS (This);
-
- OldTpl = gBS->RaiseTPL (TPL_CALLBACK);
-
- Status = Private->Io->FlushBlocks (Private->Io, Token);
-
- gBS->RestoreTPL (OldTpl);
- return Status;
-}
-
-
-
-/**
- Reset the Block Device.
-
- @param This Indicates a pointer to the calling context.
- @param ExtendedVerification Driver may perform diagnostics on reset.
-
- @retval EFI_SUCCESS The device was reset.
- @retval EFI_DEVICE_ERROR The device is not functioning properly and could
- not be reset.
-
-**/
-EFI_STATUS
-EFIAPI
-EmuBlockIoReset (
- IN EFI_BLOCK_IO_PROTOCOL *This,
- IN BOOLEAN ExtendedVerification
- )
-{
- EFI_STATUS Status;
- EMU_BLOCK_IO_PRIVATE *Private;
- EFI_TPL OldTpl;
-
- Private = EMU_BLOCK_IO_PRIVATE_DATA_FROM_THIS (This);
-
- OldTpl = gBS->RaiseTPL (TPL_CALLBACK);
-
- Status = Private->Io->Reset (Private->Io, ExtendedVerification);
-
- gBS->RestoreTPL (OldTpl);
- return Status;
-}
-
-
-/**
- Read BufferSize bytes from Lba into Buffer.
-
- @param This Indicates a pointer to the calling context.
- @param MediaId Id of the media, changes every time the media is replaced.
- @param Lba The starting Logical Block Address to read from
- @param BufferSize Size of Buffer, must be a multiple of device block size.
- @param Buffer A pointer to the destination buffer for the data. The caller is
- responsible for either having implicit or explicit ownership of the buffer.
-
- @retval EFI_SUCCESS The data was read correctly from the device.
- @retval EFI_DEVICE_ERROR The device reported an error while performing the read.
- @retval EFI_NO_MEDIA There is no media in the device.
- @retval EFI_MEDIA_CHANGED The MediaId does not matched the current device.
- @retval EFI_BAD_BUFFER_SIZE The Buffer was not a multiple of the block size of the device.
- @retval EFI_INVALID_PARAMETER The read request contains LBAs that are not valid,
- or the buffer is not on proper alignment.
-
-**/
-EFI_STATUS
-EFIAPI
-EmuBlockIoReadBlocks (
- IN EFI_BLOCK_IO_PROTOCOL *This,
- IN UINT32 MediaId,
- IN EFI_LBA Lba,
- IN UINTN BufferSize,
- OUT VOID *Buffer
- )
-{
- EFI_STATUS Status;
- EMU_BLOCK_IO_PRIVATE *Private;
- EFI_TPL OldTpl;
- EFI_BLOCK_IO2_TOKEN Token;
-
- Private = EMU_BLOCK_IO_PRIVATE_DATA_FROM_THIS (This);
-
- OldTpl = gBS->RaiseTPL (TPL_CALLBACK);
-
- Token.Event = NULL;
- Status = Private->Io->ReadBlocks (Private->Io, MediaId, Lba, &Token, BufferSize, Buffer);
-
- gBS->RestoreTPL (OldTpl);
- return Status;
-}
-
-
-/**
- Write BufferSize bytes from Lba into Buffer.
-
- @param This Indicates a pointer to the calling context.
- @param MediaId The media ID that the write request is for.
- @param Lba The starting logical block address to be written. The caller is
- responsible for writing to only legitimate locations.
- @param BufferSize Size of Buffer, must be a multiple of device block size.
- @param Buffer A pointer to the source buffer for the data.
-
- @retval EFI_SUCCESS The data was written correctly to the device.
- @retval EFI_WRITE_PROTECTED The device can not be written to.
- @retval EFI_DEVICE_ERROR The device reported an error while performing the write.
- @retval EFI_NO_MEDIA There is no media in the device.
- @retval EFI_MEDIA_CHNAGED The MediaId does not matched the current device.
- @retval EFI_BAD_BUFFER_SIZE The Buffer was not a multiple of the block size of the device.
- @retval EFI_INVALID_PARAMETER The write request contains LBAs that are not valid,
- or the buffer is not on proper alignment.
-
-**/
-EFI_STATUS
-EFIAPI
-EmuBlockIoWriteBlocks (
- IN EFI_BLOCK_IO_PROTOCOL *This,
- IN UINT32 MediaId,
- IN EFI_LBA Lba,
- IN UINTN BufferSize,
- IN VOID *Buffer
- )
-{
- EFI_STATUS Status;
- EMU_BLOCK_IO_PRIVATE *Private;
- EFI_TPL OldTpl;
- EFI_BLOCK_IO2_TOKEN Token;
-
- Private = EMU_BLOCK_IO_PRIVATE_DATA_FROM_THIS (This);
-
- OldTpl = gBS->RaiseTPL (TPL_CALLBACK);
-
- Token.Event = NULL;
- Status = Private->Io->WriteBlocks (Private->Io, MediaId, Lba, &Token, BufferSize, Buffer);
-
- gBS->RestoreTPL (OldTpl);
- return Status;
-}
-
-/**
- Flush the Block Device.
-
- @param This Indicates a pointer to the calling context.
-
- @retval EFI_SUCCESS All outstanding data was written to the device
- @retval EFI_DEVICE_ERROR The device reported an error while writting back the data
- @retval EFI_NO_MEDIA There is no media in the device.
-
-**/
-EFI_STATUS
-EFIAPI
-EmuBlockIoFlushBlocks (
- IN EFI_BLOCK_IO_PROTOCOL *This
- )
-{
- EFI_STATUS Status;
- EMU_BLOCK_IO_PRIVATE *Private;
- EFI_TPL OldTpl;
- EFI_BLOCK_IO2_TOKEN Token;
-
- Private = EMU_BLOCK_IO_PRIVATE_DATA_FROM_THIS (This);
-
- OldTpl = gBS->RaiseTPL (TPL_CALLBACK);
-
- Token.Event = NULL;
- Status = Private->Io->FlushBlocks (Private->Io, &Token);
-
- gBS->RestoreTPL (OldTpl);
- return Status;
-}
-
-
-
-/**
- Tests to see if this driver supports a given controller. If a child device is provided,
- it further tests to see if this driver supports creating a handle for the specified child device.
-
- This function checks to see if the driver specified by This supports the device specified by
- ControllerHandle. Drivers will typically use the device path attached to
- ControllerHandle and/or the services from the bus I/O abstraction attached to
- ControllerHandle to determine if the driver supports ControllerHandle. This function
- may be called many times during platform initialization. In order to reduce boot times, the tests
- performed by this function must be very small, and take as little time as possible to execute. This
- function must not change the state of any hardware devices, and this function must be aware that the
- device specified by ControllerHandle may already be managed by the same driver or a
- different driver. This function must match its calls to AllocatePages() with FreePages(),
- AllocatePool() with FreePool(), and OpenProtocol() with CloseProtocol().
- Because ControllerHandle may have been previously started by the same driver, if a protocol is
- already in the opened state, then it must not be closed with CloseProtocol(). This is required
- to guarantee the state of ControllerHandle is not modified by this function.
-
- @param[in] This A pointer to the EFI_DRIVER_BINDING_PROTOCOL instance.
- @param[in] ControllerHandle The handle of the controller to test. This handle
- must support a protocol interface that supplies
- an I/O abstraction to the driver.
- @param[in] RemainingDevicePath A pointer to the remaining portion of a device path. This
- parameter is ignored by device drivers, and is optional for bus
- drivers. For bus drivers, if this parameter is not NULL, then
- the bus driver must determine if the bus controller specified
- by ControllerHandle and the child controller specified
- by RemainingDevicePath are both supported by this
- bus driver.
-
- @retval EFI_SUCCESS The device specified by ControllerHandle and
- RemainingDevicePath is supported by the driver specified by This.
- @retval EFI_ALREADY_STARTED The device specified by ControllerHandle and
- RemainingDevicePath is already being managed by the driver
- specified by This.
- @retval EFI_ACCESS_DENIED The device specified by ControllerHandle and
- RemainingDevicePath is already being managed by a different
- driver or an application that requires exclusive access.
- Currently not implemented.
- @retval EFI_UNSUPPORTED The device specified by ControllerHandle and
- RemainingDevicePath is not supported by the driver specified by This.
-**/
-EFI_STATUS
-EFIAPI
-EmuBlockIoDriverBindingSupported (
- IN EFI_DRIVER_BINDING_PROTOCOL *This,
- IN EFI_HANDLE Handle,
- IN EFI_DEVICE_PATH_PROTOCOL *RemainingDevicePath
- )
-{
- EFI_STATUS Status;
- EMU_IO_THUNK_PROTOCOL *EmuIoThunk;
-
- //
- // Open the IO Abstraction(s) needed to perform the supported test
- //
- Status = gBS->OpenProtocol (
- Handle,
- &gEmuIoThunkProtocolGuid,
- (VOID **)&EmuIoThunk,
- This->DriverBindingHandle,
- Handle,
- EFI_OPEN_PROTOCOL_BY_DRIVER
- );
- if (EFI_ERROR (Status)) {
- return Status;
- }
-
- //
- // Make sure GUID is for a File System handle.
- //
- Status = EFI_UNSUPPORTED;
- if (CompareGuid (EmuIoThunk->Protocol, &gEmuBlockIoProtocolGuid)) {
- Status = EFI_SUCCESS;
- }
-
- //
- // Close the I/O Abstraction(s) used to perform the supported test
- //
- gBS->CloseProtocol (
- Handle,
- &gEmuIoThunkProtocolGuid,
- This->DriverBindingHandle,
- Handle
- );
- return Status;
-}
-
-
-/**
- Starts a device controller or a bus controller.
-
- The Start() function is designed to be invoked from the EFI boot service ConnectController().
- As a result, much of the error checking on the parameters to Start() has been moved into this
- common boot service. It is legal to call Start() 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.
- 2. If RemainingDevicePath is not NULL, then it must be a pointer to a naturally aligned
- EFI_DEVICE_PATH_PROTOCOL.
- 3. Prior to calling Start(), the Supported() function for the driver specified by This must
- have been called with the same calling parameters, and Supported() must have returned EFI_SUCCESS.
-
- @param[in] This A pointer to the EFI_DRIVER_BINDING_PROTOCOL instance.
- @param[in] ControllerHandle The handle of the controller to start. This handle
- must support a protocol interface that supplies
- an I/O abstraction to the driver.
- @param[in] RemainingDevicePath A pointer to the remaining portion of a device path. This
- parameter is ignored by device drivers, and is optional for bus
- drivers. For a bus driver, if this parameter is NULL, then handles
- for all the children of Controller are created by this driver.
- If this parameter is not NULL and the first Device Path Node is
- not the End of Device Path Node, then only the handle for the
- child device specified by the first Device Path Node of
- RemainingDevicePath is created by this driver.
- If the first Device Path Node of RemainingDevicePath is
- the End of Device Path Node, no child handle is created by this
- driver.
-
- @retval EFI_SUCCESS The device was started.
- @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 = Private->IoThunk->Close (Private->IoThunk);
-
- Status = gBS->UninstallMultipleProtocolInterfaces (
- Private->EfiHandle,
- &gEfiBlockIoProtocolGuid, &Private->BlockIo,
- &gEfiBlockIo2ProtocolGuid, &Private->BlockIo2,
- NULL
- );
- if (!EFI_ERROR (Status)) {
- Status = gBS->CloseProtocol (
- Handle,
- &gEmuIoThunkProtocolGuid,
- This->DriverBindingHandle,
- Handle
- );
- }
-
- if (!EFI_ERROR (Status)) {
- //
- // Free our instance data
- //
- FreeUnicodeStringTable (Private->ControllerNameTable);
- gBS->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;
-}
-
-
-
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