diff options
Diffstat (limited to 'EdkModulePkg/Universal/Disk/DiskIo/Dxe/diskio.c')
| -rw-r--r-- | EdkModulePkg/Universal/Disk/DiskIo/Dxe/diskio.c | 729 |
1 files changed, 0 insertions, 729 deletions
diff --git a/EdkModulePkg/Universal/Disk/DiskIo/Dxe/diskio.c b/EdkModulePkg/Universal/Disk/DiskIo/Dxe/diskio.c deleted file mode 100644 index d71e0aa503..0000000000 --- a/EdkModulePkg/Universal/Disk/DiskIo/Dxe/diskio.c +++ /dev/null @@ -1,729 +0,0 @@ -/*++
-
-Copyright (c) 2006, Intel Corporation
-All rights reserved. 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.
-
-Module Name:
-
- DiskIo.c
-
-Abstract:
-
- DiskIo driver that layers it's self on every Block IO protocol in the system.
- DiskIo converts a block oriented device to a byte oriented device.
-
- ReadDisk may have to do reads that are not aligned on sector boundaries.
- There are three cases:
-
- UnderRun - The first byte is not on a sector boundary or the read request is
- less than a sector in length.
-
- Aligned - A read of N contiguous sectors.
-
- OverRun - The last byte is not on a sector boundary.
-
---*/
-
-#include "DiskIo.h"
-
-EFI_DRIVER_BINDING_PROTOCOL gDiskIoDriverBinding = {
- DiskIoDriverBindingSupported,
- DiskIoDriverBindingStart,
- DiskIoDriverBindingStop,
- 0xa,
- NULL,
- NULL
-};
-
-DISK_IO_PRIVATE_DATA gDiskIoPrivateDataTemplate = {
- DISK_IO_PRIVATE_DATA_SIGNATURE,
- {
- EFI_DISK_IO_PROTOCOL_REVISION,
- DiskIoReadDisk,
- DiskIoWriteDisk
- },
- NULL
-};
-
-EFI_STATUS
-EFIAPI
-DiskIoDriverBindingSupported (
- IN EFI_DRIVER_BINDING_PROTOCOL *This,
- IN EFI_HANDLE ControllerHandle,
- IN EFI_DEVICE_PATH_PROTOCOL *RemainingDevicePath OPTIONAL
- )
-/*++
-
- Routine Description:
- Test to see if this driver supports ControllerHandle. Any ControllerHandle
- than contains a BlockIo protocol can be supported.
-
- Arguments:
- This - Protocol instance pointer.
- ControllerHandle - Handle of device to test.
- RemainingDevicePath - Not used.
-
- Returns:
- EFI_SUCCESS - This driver supports this device.
- EFI_ALREADY_STARTED - This driver is already running on this device.
- other - This driver does not support this device.
-
---*/
-{
- EFI_STATUS Status;
- EFI_BLOCK_IO_PROTOCOL *BlockIo;
-
- //
- // Open the IO Abstraction(s) needed to perform the supported test.
- //
- Status = gBS->OpenProtocol (
- ControllerHandle,
- &gEfiBlockIoProtocolGuid,
- (VOID **) &BlockIo,
- This->DriverBindingHandle,
- ControllerHandle,
- EFI_OPEN_PROTOCOL_BY_DRIVER
- );
- if (EFI_ERROR (Status)) {
- return Status;
- }
- //
- // Close the I/O Abstraction(s) used to perform the supported test.
- //
- gBS->CloseProtocol (
- ControllerHandle,
- &gEfiBlockIoProtocolGuid,
- This->DriverBindingHandle,
- ControllerHandle
- );
- return EFI_SUCCESS;
-}
-
-EFI_STATUS
-EFIAPI
-DiskIoDriverBindingStart (
- IN EFI_DRIVER_BINDING_PROTOCOL *This,
- IN EFI_HANDLE ControllerHandle,
- IN EFI_DEVICE_PATH_PROTOCOL *RemainingDevicePath OPTIONAL
- )
-/*++
-
- Routine Description:
- Start this driver on ControllerHandle by opening a Block IO protocol and
- installing a Disk IO protocol on ControllerHandle.
-
- Arguments:
- This - Protocol instance pointer.
- ControllerHandle - Handle of device to bind driver to.
- RemainingDevicePath - Not used, always produce all possible children.
-
- Returns:
- EFI_SUCCESS - This driver is added to ControllerHandle.
- EFI_ALREADY_STARTED - This driver is already running on ControllerHandle.
- other - This driver does not support this device.
-
---*/
-{
- EFI_STATUS Status;
- DISK_IO_PRIVATE_DATA *Private;
-
- Private = NULL;
-
- //
- // Connect to the Block IO interface on ControllerHandle.
- //
- Status = gBS->OpenProtocol (
- ControllerHandle,
- &gEfiBlockIoProtocolGuid,
- (VOID **) &gDiskIoPrivateDataTemplate.BlockIo,
- This->DriverBindingHandle,
- ControllerHandle,
- EFI_OPEN_PROTOCOL_BY_DRIVER
- );
- if (EFI_ERROR (Status)) {
- return Status;
- }
- //
- // Initialize the Disk IO device instance.
- //
- Private = AllocateCopyPool (sizeof (DISK_IO_PRIVATE_DATA), &gDiskIoPrivateDataTemplate);
- if (Private == NULL) {
- Status = EFI_OUT_OF_RESOURCES;
- goto ErrorExit;
- }
- //
- // Install protocol interfaces for the Disk IO device.
- //
- Status = gBS->InstallProtocolInterface (
- &ControllerHandle,
- &gEfiDiskIoProtocolGuid,
- EFI_NATIVE_INTERFACE,
- &Private->DiskIo
- );
-
-ErrorExit:
- if (EFI_ERROR (Status)) {
-
- if (Private != NULL) {
- FreePool (Private);
- }
-
- gBS->CloseProtocol (
- ControllerHandle,
- &gEfiBlockIoProtocolGuid,
- This->DriverBindingHandle,
- ControllerHandle
- );
- }
-
- return Status;
-}
-
-EFI_STATUS
-EFIAPI
-DiskIoDriverBindingStop (
- IN EFI_DRIVER_BINDING_PROTOCOL *This,
- IN EFI_HANDLE ControllerHandle,
- IN UINTN NumberOfChildren,
- IN EFI_HANDLE *ChildHandleBuffer
- )
-/*++
-
- Routine Description:
- Stop this driver on ControllerHandle by removing Disk IO protocol and closing
- the Block IO protocol on ControllerHandle.
-
- Arguments:
- This - Protocol instance pointer.
- ControllerHandle - Handle of device to stop driver on.
- NumberOfChildren - Not used.
- ChildHandleBuffer - Not used.
-
- Returns:
- EFI_SUCCESS - This driver is removed ControllerHandle.
- other - This driver was not removed from this device.
- EFI_UNSUPPORTED
-
---*/
-{
- EFI_STATUS Status;
- EFI_DISK_IO_PROTOCOL *DiskIo;
- DISK_IO_PRIVATE_DATA *Private;
-
- //
- // Get our context back.
- //
- Status = gBS->OpenProtocol (
- ControllerHandle,
- &gEfiDiskIoProtocolGuid,
- (VOID **) &DiskIo,
- This->DriverBindingHandle,
- ControllerHandle,
- EFI_OPEN_PROTOCOL_GET_PROTOCOL
- );
- if (EFI_ERROR (Status)) {
- return EFI_UNSUPPORTED;
- }
-
- Private = DISK_IO_PRIVATE_DATA_FROM_THIS (DiskIo);
-
- Status = gBS->UninstallProtocolInterface (
- ControllerHandle,
- &gEfiDiskIoProtocolGuid,
- &Private->DiskIo
- );
- if (!EFI_ERROR (Status)) {
-
- Status = gBS->CloseProtocol (
- ControllerHandle,
- &gEfiBlockIoProtocolGuid,
- This->DriverBindingHandle,
- ControllerHandle
- );
- }
-
- if (!EFI_ERROR (Status)) {
- FreePool (Private);
- }
-
- return Status;
-}
-
-EFI_STATUS
-EFIAPI
-DiskIoReadDisk (
- IN EFI_DISK_IO_PROTOCOL *This,
- IN UINT32 MediaId,
- IN UINT64 Offset,
- IN UINTN BufferSize,
- OUT VOID *Buffer
- )
-/*++
-
- Routine Description:
- Read BufferSize bytes from Offset into Buffer.
-
- Reads may support reads that are not aligned on
- sector boundaries. There are three cases:
-
- UnderRun - The first byte is not on a sector boundary or the read request is
- less than a sector in length.
-
- Aligned - A read of N contiguous sectors.
-
- OverRun - The last byte is not on a sector boundary.
-
-
- Arguments:
- This - Protocol instance pointer.
- MediaId - Id of the media, changes every time the media is replaced.
- Offset - The starting byte offset to read from.
- BufferSize - Size of Buffer.
- Buffer - Buffer containing read data.
-
- Returns:
- EFI_SUCCESS - The data was read correctly from the device.
- EFI_DEVICE_ERROR - The device reported an error while performing the read.
- EFI_NO_MEDIA - There is no media in the device.
- EFI_MEDIA_CHNAGED - The MediaId does not matched the current device.
- EFI_INVALID_PARAMETER - The read request contains device addresses that are not
- valid for the device.
- EFI_OUT_OF_RESOURCES
-
---*/
-{
- EFI_STATUS Status;
- DISK_IO_PRIVATE_DATA *Private;
- EFI_BLOCK_IO_PROTOCOL *BlockIo;
- EFI_BLOCK_IO_MEDIA *Media;
- UINT32 BlockSize;
- UINT64 Lba;
- UINT64 OverRunLba;
- UINT32 UnderRun;
- UINT32 OverRun;
- BOOLEAN TransactionComplete;
- UINTN WorkingBufferSize;
- UINT8 *WorkingBuffer;
- UINTN Length;
- UINT8 *Data;
- UINT8 *PreData;
- UINTN IsBufferAligned;
- UINTN DataBufferSize;
- BOOLEAN LastRead;
-
- Private = DISK_IO_PRIVATE_DATA_FROM_THIS (This);
-
- BlockIo = Private->BlockIo;
- Media = BlockIo->Media;
- BlockSize = Media->BlockSize;
-
- if (Media->MediaId != MediaId) {
- return EFI_MEDIA_CHANGED;
- }
-
- WorkingBuffer = Buffer;
- WorkingBufferSize = BufferSize;
-
- //
- // Allocate a temporary buffer for operation
- //
- DataBufferSize = BlockSize * DATA_BUFFER_BLOCK_NUM;
-
- if (Media->IoAlign > 1) {
- PreData = AllocatePool (DataBufferSize + Media->IoAlign);
- Data = PreData - ((UINTN) PreData & (Media->IoAlign - 1)) + Media->IoAlign;
- } else {
- PreData = AllocatePool (DataBufferSize);
- Data = PreData;
- }
-
- if (PreData == NULL) {
- return EFI_OUT_OF_RESOURCES;
- }
-
- Lba = DivU64x32Remainder (Offset, BlockSize, &UnderRun);
-
- Length = BlockSize - UnderRun;
- TransactionComplete = FALSE;
-
- Status = EFI_SUCCESS;
- if (UnderRun != 0) {
- //
- // Offset starts in the middle of an Lba, so read the entire block.
- //
- Status = BlockIo->ReadBlocks (
- BlockIo,
- MediaId,
- Lba,
- BlockSize,
- Data
- );
-
- if (EFI_ERROR (Status)) {
- goto Done;
- }
-
- if (Length > BufferSize) {
- Length = BufferSize;
- TransactionComplete = TRUE;
- }
-
- CopyMem (WorkingBuffer, Data + UnderRun, Length);
-
- WorkingBuffer += Length;
-
- WorkingBufferSize -= Length;
- if (WorkingBufferSize == 0) {
- goto Done;
- }
-
- Lba += 1;
- }
-
- OverRunLba = Lba + DivU64x32Remainder (WorkingBufferSize, BlockSize, &OverRun);
-
- if (!TransactionComplete && WorkingBufferSize >= BlockSize) {
- //
- // If the DiskIo maps directly to a BlockIo device do the read.
- //
- if (OverRun != 0) {
- WorkingBufferSize -= OverRun;
- }
- //
- // Check buffer alignment
- //
- IsBufferAligned = (UINTN) WorkingBuffer & (UINTN) (Media->IoAlign - 1);
-
- if (Media->IoAlign <= 1 || IsBufferAligned == 0) {
- //
- // Alignment is satisfied, so read them together
- //
- Status = BlockIo->ReadBlocks (
- BlockIo,
- MediaId,
- Lba,
- WorkingBufferSize,
- WorkingBuffer
- );
-
- if (EFI_ERROR (Status)) {
- goto Done;
- }
-
- WorkingBuffer += WorkingBufferSize;
-
- } else {
- //
- // Use the allocated buffer instead of the original buffer
- // to avoid alignment issue.
- // Here, the allocated buffer (8-byte align) can satisfy the alignment
- //
- LastRead = FALSE;
- do {
- if (WorkingBufferSize <= DataBufferSize) {
- //
- // It is the last calling to readblocks in this loop
- //
- DataBufferSize = WorkingBufferSize;
- LastRead = TRUE;
- }
-
- Status = BlockIo->ReadBlocks (
- BlockIo,
- MediaId,
- Lba,
- DataBufferSize,
- Data
- );
- if (EFI_ERROR (Status)) {
- goto Done;
- }
-
- CopyMem (WorkingBuffer, Data, DataBufferSize);
- WorkingBufferSize -= DataBufferSize;
- WorkingBuffer += DataBufferSize;
- Lba += DATA_BUFFER_BLOCK_NUM;
- } while (!LastRead);
- }
- }
-
- if (!TransactionComplete && OverRun != 0) {
- //
- // Last read is not a complete block.
- //
- Status = BlockIo->ReadBlocks (
- BlockIo,
- MediaId,
- OverRunLba,
- BlockSize,
- Data
- );
-
- if (EFI_ERROR (Status)) {
- goto Done;
- }
-
- CopyMem (WorkingBuffer, Data, OverRun);
- }
-
-Done:
- if (PreData != NULL) {
- FreePool (PreData);
- }
-
- return Status;
-}
-
-EFI_STATUS
-EFIAPI
-DiskIoWriteDisk (
- IN EFI_DISK_IO_PROTOCOL *This,
- IN UINT32 MediaId,
- IN UINT64 Offset,
- IN UINTN BufferSize,
- IN VOID *Buffer
- )
-/*++
-
- Routine Description:
- Read BufferSize bytes from Offset into Buffer.
-
- Writes may require a read modify write to support writes that are not
- aligned on sector boundaries. There are three cases:
-
- UnderRun - The first byte is not on a sector boundary or the write request
- is less than a sector in length. Read modify write is required.
-
- Aligned - A write of N contiguous sectors.
-
- OverRun - The last byte is not on a sector boundary. Read modified write
- required.
-
- Arguments:
- This - Protocol instance pointer.
- MediaId - Id of the media, changes every time the media is replaced.
- Offset - The starting byte offset to read from.
- BufferSize - Size of Buffer.
- Buffer - Buffer containing read data.
-
- Returns:
- EFI_SUCCESS - The data was written correctly to the device.
- EFI_WRITE_PROTECTED - The device can not be written to.
- EFI_DEVICE_ERROR - The device reported an error while performing the write.
- EFI_NO_MEDIA - There is no media in the device.
- EFI_MEDIA_CHNAGED - The MediaId does not matched the current device.
- EFI_INVALID_PARAMETER - The write request contains device addresses that are not
- valid for the device.
- EFI_OUT_OF_RESOURCES
-
---*/
-{
- EFI_STATUS Status;
- DISK_IO_PRIVATE_DATA *Private;
- EFI_BLOCK_IO_PROTOCOL *BlockIo;
- EFI_BLOCK_IO_MEDIA *Media;
- UINT32 BlockSize;
- UINT64 Lba;
- UINT64 OverRunLba;
- UINT32 UnderRun;
- UINT32 OverRun;
- BOOLEAN TransactionComplete;
- UINTN WorkingBufferSize;
- UINT8 *WorkingBuffer;
- UINTN Length;
- UINT8 *Data;
- UINT8 *PreData;
- UINTN IsBufferAligned;
- UINTN DataBufferSize;
- BOOLEAN LastWrite;
-
- Private = DISK_IO_PRIVATE_DATA_FROM_THIS (This);
-
- BlockIo = Private->BlockIo;
- Media = BlockIo->Media;
- BlockSize = Media->BlockSize;
-
- if (Media->ReadOnly) {
- return EFI_WRITE_PROTECTED;
- }
-
- if (Media->MediaId != MediaId) {
- return EFI_MEDIA_CHANGED;
- }
-
- DataBufferSize = BlockSize * DATA_BUFFER_BLOCK_NUM;
-
- if (Media->IoAlign > 1) {
- PreData = AllocatePool (DataBufferSize + Media->IoAlign);
- Data = PreData - ((UINTN) PreData & (Media->IoAlign - 1)) + Media->IoAlign;
- } else {
- PreData = AllocatePool (DataBufferSize);
- Data = PreData;
- }
-
- if (PreData == NULL) {
- return EFI_OUT_OF_RESOURCES;
- }
-
- WorkingBuffer = Buffer;
- WorkingBufferSize = BufferSize;
-
- Lba = DivU64x32Remainder (Offset, BlockSize, &UnderRun);
-
- Length = BlockSize - UnderRun;
- TransactionComplete = FALSE;
-
- Status = EFI_SUCCESS;
- if (UnderRun != 0) {
- //
- // Offset starts in the middle of an Lba, so do read modify write.
- //
- Status = BlockIo->ReadBlocks (
- BlockIo,
- MediaId,
- Lba,
- BlockSize,
- Data
- );
-
- if (EFI_ERROR (Status)) {
- goto Done;
- }
-
- if (Length > BufferSize) {
- Length = BufferSize;
- TransactionComplete = TRUE;
- }
-
- CopyMem (Data + UnderRun, WorkingBuffer, Length);
-
- Status = BlockIo->WriteBlocks (
- BlockIo,
- MediaId,
- Lba,
- BlockSize,
- Data
- );
- if (EFI_ERROR (Status)) {
- goto Done;
- }
-
- WorkingBuffer += Length;
- WorkingBufferSize -= Length;
- if (WorkingBufferSize == 0) {
- goto Done;
- }
-
- Lba += 1;
- }
-
- OverRunLba = Lba + DivU64x32Remainder (WorkingBufferSize, BlockSize, &OverRun);
-
- if (!TransactionComplete && WorkingBufferSize >= BlockSize) {
- //
- // If the DiskIo maps directly to a BlockIo device do the write.
- //
- if (OverRun != 0) {
- WorkingBufferSize -= OverRun;
- }
- //
- // Check buffer alignment
- //
- IsBufferAligned = (UINTN) WorkingBuffer & (UINTN) (Media->IoAlign - 1);
-
- if (Media->IoAlign <= 1 || IsBufferAligned == 0) {
- //
- // Alignment is satisfied, so write them together
- //
- Status = BlockIo->WriteBlocks (
- BlockIo,
- MediaId,
- Lba,
- WorkingBufferSize,
- WorkingBuffer
- );
-
- if (EFI_ERROR (Status)) {
- goto Done;
- }
-
- WorkingBuffer += WorkingBufferSize;
-
- } else {
- //
- // The buffer parameter is not aligned with the request
- // So use the allocated instead.
- // It can fit almost all the cases.
- //
- LastWrite = FALSE;
- do {
- if (WorkingBufferSize <= DataBufferSize) {
- //
- // It is the last calling to writeblocks in this loop
- //
- DataBufferSize = WorkingBufferSize;
- LastWrite = TRUE;
- }
-
- CopyMem (Data, WorkingBuffer, DataBufferSize);
- Status = BlockIo->WriteBlocks (
- BlockIo,
- MediaId,
- Lba,
- DataBufferSize,
- Data
- );
- if (EFI_ERROR (Status)) {
- goto Done;
- }
-
- WorkingBufferSize -= DataBufferSize;
- WorkingBuffer += DataBufferSize;
- Lba += DATA_BUFFER_BLOCK_NUM;
- } while (!LastWrite);
- }
- }
-
- if (!TransactionComplete && OverRun != 0) {
- //
- // Last bit is not a complete block, so do a read modify write.
- //
- Status = BlockIo->ReadBlocks (
- BlockIo,
- MediaId,
- OverRunLba,
- BlockSize,
- Data
- );
-
- if (EFI_ERROR (Status)) {
- goto Done;
- }
-
- CopyMem (Data, WorkingBuffer, OverRun);
-
- Status = BlockIo->WriteBlocks (
- BlockIo,
- MediaId,
- OverRunLba,
- BlockSize,
- Data
- );
- if (EFI_ERROR (Status)) {
- goto Done;
- }
- }
-
-Done:
- if (PreData != NULL) {
- FreePool (PreData);
- }
-
- return Status;
-}
|