diff options
author | cwu11 <cwu11@6f19259b-4bc3-4df7-8a09-765794883524> | 2006-11-03 02:47:43 +0000 |
---|---|---|
committer | cwu11 <cwu11@6f19259b-4bc3-4df7-8a09-765794883524> | 2006-11-03 02:47:43 +0000 |
commit | 511710d68f477e0210ae1830769e5d0cde4ea36a (patch) | |
tree | 98a972482719ce74286d602ca242153a0a5c9964 /EdkModulePkg/Universal/Disk | |
parent | cb44bbdb8e15fc40362e6b0542be196c15c04615 (diff) | |
download | edk2-511710d68f477e0210ae1830769e5d0cde4ea36a.zip edk2-511710d68f477e0210ae1830769e5d0cde4ea36a.tar.gz edk2-511710d68f477e0210ae1830769e5d0cde4ea36a.tar.bz2 |
1. Add the fix for the following Bugs:
i) BMM_FAKE_NV_DATA definition inconsistent in bm.vfr and BootMain.h
(EdkNt32Pkg\Dxe\PlatformBdsDxe\Generic\BootMaint\BootMain.h)
ii) Change some files’ EOL(end of line) format to DOS. Some file use even mixed style EOL.
(EdkModulePkg\Universal\DevicePath\Dxe\DevicePath.c, DevicepathFromText.c, DevicePathUtilities.c;
EdkModulePkg\Universal\Disk\DiskIo\Dxe\diskIo.c; MdePkg\Library\UefiLib\UefiNotTiano.c)
iii) Change some illegal characters in many files, the problem is mainly connected with people using Chinese Input method to input symbols such as ' " - ?, etc. Multiple files are influenced.
git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@1890 6f19259b-4bc3-4df7-8a09-765794883524
Diffstat (limited to 'EdkModulePkg/Universal/Disk')
-rw-r--r-- | EdkModulePkg/Universal/Disk/DiskIo/Dxe/diskio.c | 1562 |
1 files changed, 781 insertions, 781 deletions
diff --git a/EdkModulePkg/Universal/Disk/DiskIo/Dxe/diskio.c b/EdkModulePkg/Universal/Disk/DiskIo/Dxe/diskio.c index 35d2a19..1cb26fe 100644 --- a/EdkModulePkg/Universal/Disk/DiskIo/Dxe/diskio.c +++ b/EdkModulePkg/Universal/Disk/DiskIo/Dxe/diskio.c @@ -1,781 +1,781 @@ -/*++ - -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" - -// -// Prototypes -// Driver model protocol interface -// -EFI_STATUS -EFIAPI -DiskIoDriverBindingSupported ( - IN EFI_DRIVER_BINDING_PROTOCOL *This, - IN EFI_HANDLE ControllerHandle, - IN EFI_DEVICE_PATH_PROTOCOL *RemainingDevicePath - ); - -EFI_STATUS -EFIAPI -DiskIoDriverBindingStart ( - IN EFI_DRIVER_BINDING_PROTOCOL *This, - IN EFI_HANDLE ControllerHandle, - IN EFI_DEVICE_PATH_PROTOCOL *RemainingDevicePath - ); - -EFI_STATUS -EFIAPI -DiskIoDriverBindingStop ( - IN EFI_DRIVER_BINDING_PROTOCOL *This, - IN EFI_HANDLE ControllerHandle, - IN UINTN NumberOfChildren, - IN EFI_HANDLE *ChildHandleBuffer - ); - -// -// Disk I/O Protocol Interface -// -EFI_STATUS -EFIAPI -DiskIoReadDisk ( - IN EFI_DISK_IO_PROTOCOL *This, - IN UINT32 MediaId, - IN UINT64 Offset, - IN UINTN BufferSize, - OUT VOID *Buffer - ); - -EFI_STATUS -EFIAPI -DiskIoWriteDisk ( - IN EFI_DISK_IO_PROTOCOL *This, - IN UINT32 MediaId, - IN UINT64 Offset, - IN UINTN BufferSize, - IN VOID *Buffer - ); - -EFI_DRIVER_BINDING_PROTOCOL gDiskIoDriverBinding = { - DiskIoDriverBindingSupported, - DiskIoDriverBindingStart, - DiskIoDriverBindingStop, - 0x10, - 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) { - gBS->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)) { - gBS->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) { - gBS->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) { - gBS->FreePool (PreData); - } - - return Status; -} +/*++
+
+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"
+
+//
+// Prototypes
+// Driver model protocol interface
+//
+EFI_STATUS
+EFIAPI
+DiskIoDriverBindingSupported (
+ IN EFI_DRIVER_BINDING_PROTOCOL *This,
+ IN EFI_HANDLE ControllerHandle,
+ IN EFI_DEVICE_PATH_PROTOCOL *RemainingDevicePath
+ );
+
+EFI_STATUS
+EFIAPI
+DiskIoDriverBindingStart (
+ IN EFI_DRIVER_BINDING_PROTOCOL *This,
+ IN EFI_HANDLE ControllerHandle,
+ IN EFI_DEVICE_PATH_PROTOCOL *RemainingDevicePath
+ );
+
+EFI_STATUS
+EFIAPI
+DiskIoDriverBindingStop (
+ IN EFI_DRIVER_BINDING_PROTOCOL *This,
+ IN EFI_HANDLE ControllerHandle,
+ IN UINTN NumberOfChildren,
+ IN EFI_HANDLE *ChildHandleBuffer
+ );
+
+//
+// Disk I/O Protocol Interface
+//
+EFI_STATUS
+EFIAPI
+DiskIoReadDisk (
+ IN EFI_DISK_IO_PROTOCOL *This,
+ IN UINT32 MediaId,
+ IN UINT64 Offset,
+ IN UINTN BufferSize,
+ OUT VOID *Buffer
+ );
+
+EFI_STATUS
+EFIAPI
+DiskIoWriteDisk (
+ IN EFI_DISK_IO_PROTOCOL *This,
+ IN UINT32 MediaId,
+ IN UINT64 Offset,
+ IN UINTN BufferSize,
+ IN VOID *Buffer
+ );
+
+EFI_DRIVER_BINDING_PROTOCOL gDiskIoDriverBinding = {
+ DiskIoDriverBindingSupported,
+ DiskIoDriverBindingStart,
+ DiskIoDriverBindingStop,
+ 0x10,
+ 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) {
+ gBS->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)) {
+ gBS->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) {
+ gBS->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) {
+ gBS->FreePool (PreData);
+ }
+
+ return Status;
+}
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