diff options
Diffstat (limited to 'EdkNt32Pkg/Dxe/WinNtThunk/Bus/BlockIo/WinNtBlockIo.c')
| -rw-r--r-- | EdkNt32Pkg/Dxe/WinNtThunk/Bus/BlockIo/WinNtBlockIo.c | 1104 |
1 files changed, 0 insertions, 1104 deletions
diff --git a/EdkNt32Pkg/Dxe/WinNtThunk/Bus/BlockIo/WinNtBlockIo.c b/EdkNt32Pkg/Dxe/WinNtThunk/Bus/BlockIo/WinNtBlockIo.c deleted file mode 100644 index effc8fa81b..0000000000 --- a/EdkNt32Pkg/Dxe/WinNtThunk/Bus/BlockIo/WinNtBlockIo.c +++ /dev/null @@ -1,1104 +0,0 @@ -/*++
-
-Copyright (c) 2006 - 2007, 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:
-
- WinNtBlockIo.c
-
-Abstract:
-
- Produce block IO abstractions for real devices on your PC using Win32 APIs.
- The configuration of what devices to mount or emulate comes from NT
- environment variables. The variables must be visible to the Microsoft*
- Developer Studio for them to work.
-
- <F>ixed - Fixed disk like a hard drive.
- <R>emovable - Removable media like a floppy or CD-ROM.
- Read <O>nly - Write protected device.
- Read <W>rite - Read write device.
- <block count> - Decimal number of blocks a device supports.
- <block size> - Decimal number of bytes per block.
-
- NT envirnonment variable contents. '<' and '>' are not part of the variable,
- they are just used to make this help more readable. There should be no
- spaces between the ';'. Extra spaces will break the variable. A '!' is
- used to seperate multiple devices in a variable.
-
- EFI_WIN_NT_VIRTUAL_DISKS =
- <F | R><O | W>;<block count>;<block size>[!...]
-
- EFI_WIN_NT_PHYSICAL_DISKS =
- <drive letter>:<F | R><O | W>;<block count>;<block size>[!...]
-
- Virtual Disks: These devices use a file to emulate a hard disk or removable
- media device.
-
- Thus a 20 MB emulated hard drive would look like:
- EFI_WIN_NT_VIRTUAL_DISKS=FW;40960;512
-
- A 1.44MB emulated floppy with a block size of 1024 would look like:
- EFI_WIN_NT_VIRTUAL_DISKS=RW;1440;1024
-
- Physical Disks: These devices use NT to open a real device in your system
-
- Thus a 120 MB floppy would look like:
- EFI_WIN_NT_PHYSICAL_DISKS=B:RW;245760;512
-
- Thus a standard CD-ROM floppy would look like:
- EFI_WIN_NT_PHYSICAL_DISKS=Z:RO;307200;2048
-
-
- * Other names and brands may be claimed as the property of others.
-
---*/
-
-#include "WinNtBlockIo.h"
-
-EFI_DRIVER_BINDING_PROTOCOL gWinNtBlockIoDriverBinding = {
- WinNtBlockIoDriverBindingSupported,
- WinNtBlockIoDriverBindingStart,
- WinNtBlockIoDriverBindingStop,
- 0xa,
- NULL,
- NULL
-};
-
-
-EFI_STATUS
-EFIAPI
-WinNtBlockIoDriverBindingSupported (
- IN EFI_DRIVER_BINDING_PROTOCOL *This,
- IN EFI_HANDLE Handle,
- IN EFI_DEVICE_PATH_PROTOCOL *RemainingDevicePath
- )
-/*++
-
-Routine Description:
-
-Arguments:
-
-Returns:
-
- None
-
---*/
-// TODO: This - add argument and description to function comment
-// TODO: Handle - add argument and description to function comment
-// TODO: RemainingDevicePath - add argument and description to function comment
-{
- EFI_STATUS Status;
- EFI_WIN_NT_IO_PROTOCOL *WinNtIo;
-
- //
- // Open the IO Abstraction(s) needed to perform the supported test
- //
- Status = gBS->OpenProtocol (
- Handle,
- &gEfiWinNtIoProtocolGuid,
- &WinNtIo,
- This->DriverBindingHandle,
- Handle,
- EFI_OPEN_PROTOCOL_BY_DRIVER
- );
- if (EFI_ERROR (Status)) {
- return Status;
- }
-
- //
- // Make sure the WinNtThunkProtocol is valid
- //
- Status = EFI_UNSUPPORTED;
- if (WinNtIo->WinNtThunk->Signature == EFI_WIN_NT_THUNK_PROTOCOL_SIGNATURE) {
-
- //
- // Check the GUID to see if this is a handle type the driver supports
- //
- if (CompareGuid (WinNtIo->TypeGuid, &gEfiWinNtVirtualDisksGuid) ||
- CompareGuid (WinNtIo->TypeGuid, &gEfiWinNtPhysicalDisksGuid) ) {
- Status = EFI_SUCCESS;
- }
- }
-
- //
- // Close the I/O Abstraction(s) used to perform the supported test
- //
- gBS->CloseProtocol (
- Handle,
- &gEfiWinNtIoProtocolGuid,
- This->DriverBindingHandle,
- Handle
- );
-
- return Status;
-}
-
-EFI_STATUS
-EFIAPI
-WinNtBlockIoDriverBindingStart (
- IN EFI_DRIVER_BINDING_PROTOCOL *This,
- IN EFI_HANDLE Handle,
- IN EFI_DEVICE_PATH_PROTOCOL *RemainingDevicePath
- )
-/*++
-
-Routine Description:
-
-Arguments:
-
-Returns:
-
- None
-
---*/
-// TODO: This - add argument and description to function comment
-// TODO: Handle - add argument and description to function comment
-// TODO: RemainingDevicePath - add argument and description to function comment
-{
- EFI_STATUS Status;
- EFI_WIN_NT_IO_PROTOCOL *WinNtIo;
- WIN_NT_RAW_DISK_DEVICE_TYPE DiskType;
- UINT16 Buffer[FILENAME_BUFFER_SIZE];
- CHAR16 *Str;
- BOOLEAN RemovableMedia;
- BOOLEAN WriteProtected;
- UINTN NumberOfBlocks;
- UINTN BlockSize;
-
- //
- // Grab the protocols we need
- //
- Status = gBS->OpenProtocol (
- Handle,
- &gEfiWinNtIoProtocolGuid,
- &WinNtIo,
- This->DriverBindingHandle,
- Handle,
- EFI_OPEN_PROTOCOL_BY_DRIVER
- );
- if (EFI_ERROR (Status)) {
- return Status;
- }
-
- //
- // Set DiskType
- //
- if (CompareGuid (WinNtIo->TypeGuid, &gEfiWinNtVirtualDisksGuid)) {
- DiskType = EfiWinNtVirtualDisks;
- } else if (CompareGuid (WinNtIo->TypeGuid, &gEfiWinNtPhysicalDisksGuid)) {
- DiskType = EfiWinNtPhysicalDisks;
- } else {
- Status = EFI_UNSUPPORTED;
- goto Done;
- }
-
- Status = EFI_NOT_FOUND;
- Str = WinNtIo->EnvString;
- if (DiskType == EfiWinNtVirtualDisks) {
- WinNtIo->WinNtThunk->SPrintf (
- Buffer,
- sizeof (Buffer),
- L"Diskfile%d",
- WinNtIo->InstanceNumber
- );
- } else {
- if (*Str >= 'A' && *Str <= 'Z' || *Str >= 'a' && *Str <= 'z') {
- WinNtIo->WinNtThunk->SPrintf (Buffer, sizeof (Buffer), L"\\\\.\\%c:", *Str);
- } else {
- WinNtIo->WinNtThunk->SPrintf (Buffer, sizeof (Buffer), L"\\\\.\\PHYSICALDRIVE%c", *Str);
- }
-
- Str++;
- if (*Str != ':') {
- Status = EFI_NOT_FOUND;
- goto Done;
- }
-
- Str++;
- }
-
- if (*Str == 'R' || *Str == 'F') {
- RemovableMedia = (BOOLEAN) (*Str == 'R');
- Str++;
- if (*Str == 'O' || *Str == 'W') {
- WriteProtected = (BOOLEAN) (*Str == 'O');
- Str = GetNextElementPastTerminator (Str, ';');
-
- NumberOfBlocks = Atoi (Str);
- if (NumberOfBlocks != 0) {
- Str = GetNextElementPastTerminator (Str, ';');
- BlockSize = Atoi (Str);
- if (BlockSize != 0) {
- //
- // If we get here the variable is valid so do the work.
- //
- Status = WinNtBlockIoCreateMapping (
- WinNtIo,
- Handle,
- Buffer,
- WriteProtected,
- RemovableMedia,
- NumberOfBlocks,
- BlockSize,
- DiskType
- );
-
- }
- }
- }
- }
-
-Done:
- if (EFI_ERROR (Status)) {
- gBS->CloseProtocol (
- Handle,
- &gEfiWinNtIoProtocolGuid,
- This->DriverBindingHandle,
- Handle
- );
- }
-
- return Status;
-}
-
-EFI_STATUS
-EFIAPI
-WinNtBlockIoDriverBindingStop (
- IN EFI_DRIVER_BINDING_PROTOCOL *This,
- IN EFI_HANDLE Handle,
- IN UINTN NumberOfChildren,
- IN EFI_HANDLE *ChildHandleBuffer
- )
-/*++
-
-Routine Description:
-
- TODO: Add function description
-
-Arguments:
-
- This - TODO: add argument description
- Handle - TODO: add argument description
- NumberOfChildren - TODO: add argument description
- ChildHandleBuffer - TODO: add argument description
-
-Returns:
-
- EFI_UNSUPPORTED - TODO: Add description for return value
-
---*/
-{
- EFI_BLOCK_IO_PROTOCOL *BlockIo;
- EFI_STATUS Status;
- WIN_NT_BLOCK_IO_PRIVATE *Private;
-
- //
- // Get our context back
- //
- Status = gBS->OpenProtocol (
- Handle,
- &gEfiBlockIoProtocolGuid,
- &BlockIo,
- This->DriverBindingHandle,
- Handle,
- EFI_OPEN_PROTOCOL_GET_PROTOCOL
- );
- if (EFI_ERROR (Status)) {
- return EFI_UNSUPPORTED;
- }
-
- Private = WIN_NT_BLOCK_IO_PRIVATE_DATA_FROM_THIS (BlockIo);
-
- //
- // BugBug: If we need to kick people off, we need to make Uninstall Close the handles.
- // We could pass in our image handle or FLAG our open to be closed via
- // Unistall (== to saying any CloseProtocol will close our open)
- //
- Status = gBS->UninstallMultipleProtocolInterfaces (
- Private->EfiHandle,
- &gEfiBlockIoProtocolGuid,
- &Private->BlockIo,
- NULL
- );
- if (!EFI_ERROR (Status)) {
-
- Status = gBS->CloseProtocol (
- Handle,
- &gEfiWinNtIoProtocolGuid,
- This->DriverBindingHandle,
- Handle
- );
-
- //
- // Shut down our device
- //
- Private->WinNtThunk->CloseHandle (Private->NtHandle);
-
- //
- // Free our instance data
- //
- FreeUnicodeStringTable (Private->ControllerNameTable);
-
- FreePool (Private);
- }
-
- return Status;
-}
-
-STATIC
-CHAR16 *
-GetNextElementPastTerminator (
- IN CHAR16 *EnvironmentVariable,
- IN CHAR16 Terminator
- )
-/*++
-
-Routine Description:
-
- Worker function to parse environment variables.
-
-Arguments:
- EnvironmentVariable - Envirnment variable to parse.
-
- Terminator - Terminator to parse for.
-
-Returns:
-
- Pointer to next eliment past the first occurence of Terminator or the '\0'
- at the end of the string.
-
---*/
-{
- CHAR16 *Ptr;
-
- for (Ptr = EnvironmentVariable; *Ptr != '\0'; Ptr++) {
- if (*Ptr == Terminator) {
- Ptr++;
- break;
- }
- }
-
- return Ptr;
-}
-
-STATIC
-EFI_STATUS
-WinNtBlockIoCreateMapping (
- IN EFI_WIN_NT_IO_PROTOCOL *WinNtIo,
- IN EFI_HANDLE EfiDeviceHandle,
- IN CHAR16 *Filename,
- IN BOOLEAN ReadOnly,
- IN BOOLEAN RemovableMedia,
- IN UINTN NumberOfBlocks,
- IN UINTN BlockSize,
- IN WIN_NT_RAW_DISK_DEVICE_TYPE DeviceType
- )
-/*++
-
-Routine Description:
-
- TODO: Add function description
-
-Arguments:
-
- WinNtIo - TODO: add argument description
- EfiDeviceHandle - TODO: add argument description
- Filename - TODO: add argument description
- ReadOnly - TODO: add argument description
- RemovableMedia - TODO: add argument description
- NumberOfBlocks - TODO: add argument description
- BlockSize - TODO: add argument description
- DeviceType - TODO: add argument description
-
-Returns:
-
- TODO: add return values
-
---*/
-{
- EFI_STATUS Status;
- EFI_BLOCK_IO_PROTOCOL *BlockIo;
- WIN_NT_BLOCK_IO_PRIVATE *Private;
- UINTN Index;
-
- WinNtIo->WinNtThunk->SetErrorMode (SEM_FAILCRITICALERRORS);
-
- Private = AllocatePool (sizeof (WIN_NT_BLOCK_IO_PRIVATE));
- ASSERT (Private != NULL);
-
- EfiInitializeLock (&Private->Lock, TPL_NOTIFY);
-
- Private->WinNtThunk = WinNtIo->WinNtThunk;
-
- Private->Signature = WIN_NT_BLOCK_IO_PRIVATE_SIGNATURE;
- Private->LastBlock = NumberOfBlocks - 1;
- Private->BlockSize = BlockSize;
-
- for (Index = 0; Filename[Index] != 0; Index++) {
- Private->Filename[Index] = Filename[Index];
- }
-
- Private->Filename[Index] = 0;
-
- Private->ReadMode = GENERIC_READ | (ReadOnly ? 0 : GENERIC_WRITE);
- Private->ShareMode = FILE_SHARE_READ | FILE_SHARE_WRITE;
-
- Private->NumberOfBlocks = NumberOfBlocks;
- Private->DeviceType = DeviceType;
- Private->NtHandle = INVALID_HANDLE_VALUE;
-
- Private->ControllerNameTable = NULL;
-
- AddUnicodeString (
- "eng",
- gWinNtBlockIoComponentName.SupportedLanguages,
- &Private->ControllerNameTable,
- Private->Filename
- );
-
- BlockIo = &Private->BlockIo;
- BlockIo->Revision = EFI_BLOCK_IO_PROTOCOL_REVISION;
- BlockIo->Media = &Private->Media;
- BlockIo->Media->BlockSize = Private->BlockSize;
- BlockIo->Media->LastBlock = Private->NumberOfBlocks - 1;
- BlockIo->Media->MediaId = 0;;
-
- BlockIo->Reset = WinNtBlockIoResetBlock;
- BlockIo->ReadBlocks = WinNtBlockIoReadBlocks;
- BlockIo->WriteBlocks = WinNtBlockIoWriteBlocks;
- BlockIo->FlushBlocks = WinNtBlockIoFlushBlocks;
-
- BlockIo->Media->ReadOnly = ReadOnly;
- BlockIo->Media->RemovableMedia = RemovableMedia;
- BlockIo->Media->LogicalPartition = FALSE;
- BlockIo->Media->MediaPresent = TRUE;
- BlockIo->Media->WriteCaching = FALSE;
-
- if (DeviceType == EfiWinNtVirtualDisks) {
- BlockIo->Media->IoAlign = 1;
-
- //
- // Create a file to use for a virtual disk even if it does not exist.
- //
- Private->OpenMode = OPEN_ALWAYS;
- } else if (DeviceType == EfiWinNtPhysicalDisks) {
- //
- // Physical disk and floppy devices require 4 byte alignment.
- //
- BlockIo->Media->IoAlign = 4;
-
- //
- // You can only open a physical device if it exists.
- //
- Private->OpenMode = OPEN_EXISTING;
- } else {
- ASSERT (FALSE);
- }
-
- Private->EfiHandle = EfiDeviceHandle;
- Status = WinNtBlockIoOpenDevice (Private);
- if (!EFI_ERROR (Status)) {
-
- Status = gBS->InstallMultipleProtocolInterfaces (
- &Private->EfiHandle,
- &gEfiBlockIoProtocolGuid,
- &Private->BlockIo,
- NULL
- );
- if (EFI_ERROR (Status)) {
- FreeUnicodeStringTable (Private->ControllerNameTable);
- FreePool (Private);
- }
-
- DEBUG ((EFI_D_INIT, "BlockDevice added: %s\n", Filename));
- }
-
- return Status;
-}
-
-STATIC
-EFI_STATUS
-WinNtBlockIoOpenDevice (
- WIN_NT_BLOCK_IO_PRIVATE *Private
- )
-/*++
-
-Routine Description:
-
- TODO: Add function description
-
-Arguments:
-
- Private - TODO: add argument description
-
-Returns:
-
- TODO: add return values
-
---*/
-{
- EFI_STATUS Status;
- UINT64 FileSize;
- UINT64 EndOfFile;
- EFI_BLOCK_IO_PROTOCOL *BlockIo;
-
- BlockIo = &Private->BlockIo;
- EfiAcquireLock (&Private->Lock);
-
- //
- // If the device is already opened, close it
- //
- if (Private->NtHandle != INVALID_HANDLE_VALUE) {
- BlockIo->Reset (BlockIo, FALSE);
- }
-
- //
- // Open the device
- //
- Private->NtHandle = Private->WinNtThunk->CreateFile (
- Private->Filename,
- Private->ReadMode,
- Private->ShareMode,
- NULL,
- Private->OpenMode,
- 0,
- NULL
- );
-
- Status = Private->WinNtThunk->GetLastError ();
-
- if (Private->NtHandle == INVALID_HANDLE_VALUE) {
- DEBUG ((EFI_D_INFO, "PlOpenBlock: Could not open %s, %x\n", Private->Filename, Private->WinNtThunk->GetLastError ()));
- BlockIo->Media->MediaPresent = FALSE;
- Status = EFI_NO_MEDIA;
- goto Done;
- }
-
- if (!BlockIo->Media->MediaPresent) {
- //
- // BugBug: try to emulate if a CD appears - notify drivers to check it out
- //
- BlockIo->Media->MediaPresent = TRUE;
- EfiReleaseLock (&Private->Lock);
- EfiAcquireLock (&Private->Lock);
- }
-
- //
- // get the size of the file
- //
- Status = SetFilePointer64 (Private, 0, &FileSize, FILE_END);
-
- if (EFI_ERROR (Status)) {
- FileSize = MultU64x32 (Private->NumberOfBlocks, Private->BlockSize);
- if (Private->DeviceType == EfiWinNtVirtualDisks) {
- DEBUG ((EFI_D_ERROR, "PlOpenBlock: Could not get filesize of %s\n", Private->Filename));
- Status = EFI_UNSUPPORTED;
- goto Done;
- }
- }
-
- if (Private->NumberOfBlocks == 0) {
- Private->NumberOfBlocks = DivU64x32 (FileSize, Private->BlockSize);
- }
-
- EndOfFile = MultU64x32 (Private->NumberOfBlocks, Private->BlockSize);
-
- if (FileSize != EndOfFile) {
- //
- // file is not the proper size, change it
- //
- DEBUG ((EFI_D_INIT, "PlOpenBlock: Initializing block device: %hs\n", Private->Filename));
-
- //
- // first set it to 0
- //
- SetFilePointer64 (Private, 0, NULL, FILE_BEGIN);
- Private->WinNtThunk->SetEndOfFile (Private->NtHandle);
-
- //
- // then set it to the needed file size (OS will zero fill it)
- //
- SetFilePointer64 (Private, EndOfFile, NULL, FILE_BEGIN);
- Private->WinNtThunk->SetEndOfFile (Private->NtHandle);
- }
-
- DEBUG ((EFI_D_INIT, "%HPlOpenBlock: opened %s%N\n", Private->Filename));
- Status = EFI_SUCCESS;
-
-Done:
- if (EFI_ERROR (Status)) {
- if (Private->NtHandle != INVALID_HANDLE_VALUE) {
- BlockIo->Reset (BlockIo, FALSE);
- }
- }
-
- EfiReleaseLock (&Private->Lock);
- return Status;
-}
-
-STATIC
-EFI_STATUS
-WinNtBlockIoError (
- IN WIN_NT_BLOCK_IO_PRIVATE *Private
- )
-/*++
-
-Routine Description:
-
- TODO: Add function description
-
-Arguments:
-
- Private - TODO: add argument description
-
-Returns:
-
- TODO: add return values
-
---*/
-{
- EFI_BLOCK_IO_PROTOCOL *BlockIo;
- EFI_STATUS Status;
- BOOLEAN ReinstallBlockIoFlag;
-
- BlockIo = &Private->BlockIo;
-
- switch (Private->WinNtThunk->GetLastError ()) {
-
- case ERROR_NOT_READY:
- Status = EFI_NO_MEDIA;
- BlockIo->Media->ReadOnly = FALSE;
- BlockIo->Media->MediaPresent = FALSE;
- ReinstallBlockIoFlag = FALSE;
- break;
-
- case ERROR_WRONG_DISK:
- BlockIo->Media->ReadOnly = FALSE;
- BlockIo->Media->MediaPresent = TRUE;
- BlockIo->Media->MediaId += 1;
- ReinstallBlockIoFlag = TRUE;
- Status = EFI_MEDIA_CHANGED;
- break;
-
- case ERROR_WRITE_PROTECT:
- BlockIo->Media->ReadOnly = TRUE;
- ReinstallBlockIoFlag = FALSE;
- Status = EFI_WRITE_PROTECTED;
- break;
-
- default:
- ReinstallBlockIoFlag = FALSE;
- Status = EFI_DEVICE_ERROR;
- break;
- }
-
- if (ReinstallBlockIoFlag) {
- BlockIo->Reset (BlockIo, FALSE);
-
- gBS->ReinstallProtocolInterface (
- Private->EfiHandle,
- &gEfiBlockIoProtocolGuid,
- BlockIo,
- BlockIo
- );
- }
-
- return Status;
-}
-
-STATIC
-EFI_STATUS
-WinNtBlockIoReadWriteCommon (
- IN WIN_NT_BLOCK_IO_PRIVATE *Private,
- IN UINT32 MediaId,
- IN EFI_LBA Lba,
- IN UINTN BufferSize,
- IN VOID *Buffer,
- IN CHAR8 *CallerName
- )
-/*++
-
-Routine Description:
-
- TODO: Add function description
-
-Arguments:
-
- Private - TODO: add argument description
- MediaId - TODO: add argument description
- Lba - TODO: add argument description
- BufferSize - TODO: add argument description
- Buffer - TODO: add argument description
- CallerName - TODO: add argument description
-
-Returns:
-
- EFI_NO_MEDIA - TODO: Add description for return value
- EFI_MEDIA_CHANGED - TODO: Add description for return value
- EFI_INVALID_PARAMETER - TODO: Add description for return value
- EFI_SUCCESS - TODO: Add description for return value
- EFI_BAD_BUFFER_SIZE - TODO: Add description for return value
- EFI_INVALID_PARAMETER - TODO: Add description for return value
- EFI_SUCCESS - TODO: Add description for return value
-
---*/
-{
- EFI_STATUS Status;
- UINTN BlockSize;
- UINT64 LastBlock;
- INT64 DistanceToMove;
- UINT64 DistanceMoved;
-
- if (Private->NtHandle == INVALID_HANDLE_VALUE) {
- Status = WinNtBlockIoOpenDevice (Private);
- if (EFI_ERROR (Status)) {
- return Status;
- }
- }
-
- if (!Private->Media.MediaPresent) {
- DEBUG ((EFI_D_INIT, "%s: No Media\n", CallerName));
- return EFI_NO_MEDIA;
- }
-
- if (Private->Media.MediaId != MediaId) {
- return EFI_MEDIA_CHANGED;
- }
-
- if ((UINT32) Buffer % Private->Media.IoAlign != 0) {
- return EFI_INVALID_PARAMETER;
- }
-
- //
- // Verify buffer size
- //
- BlockSize = Private->BlockSize;
- if (BufferSize == 0) {
- DEBUG ((EFI_D_INIT, "%s: Zero length read\n", CallerName));
- return EFI_SUCCESS;
- }
-
- if ((BufferSize % BlockSize) != 0) {
- DEBUG ((EFI_D_INIT, "%s: Invalid read size\n", CallerName));
- return EFI_BAD_BUFFER_SIZE;
- }
-
- LastBlock = Lba + (BufferSize / BlockSize) - 1;
- if (LastBlock > Private->LastBlock) {
- DEBUG ((EFI_D_INIT, "ReadBlocks: Attempted to read off end of device\n"));
- return EFI_INVALID_PARAMETER;
- }
- //
- // Seek to End of File
- //
- DistanceToMove = MultU64x32 (Lba, BlockSize);
- Status = SetFilePointer64 (Private, DistanceToMove, &DistanceMoved, FILE_BEGIN);
-
- if (EFI_ERROR (Status)) {
- DEBUG ((EFI_D_INIT, "WriteBlocks: SetFilePointer failed\n"));
- return WinNtBlockIoError (Private);
- }
-
- return EFI_SUCCESS;
-}
-
-STATIC
-EFI_STATUS
-EFIAPI
-WinNtBlockIoReadBlocks (
- IN EFI_BLOCK_IO_PROTOCOL *This,
- IN UINT32 MediaId,
- IN EFI_LBA Lba,
- IN UINTN BufferSize,
- OUT VOID *Buffer
- )
-/*++
-
- Routine Description:
- Read BufferSize bytes from Lba into Buffer.
-
- Arguments:
- This - Protocol instance pointer.
- MediaId - Id of the media, changes every time the media is replaced.
- Lba - The starting Logical Block Address to read from
- BufferSize - Size of Buffer, must be a multiple of device block size.
- 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_CHANGED - The MediaId does not matched the current device.
- EFI_BAD_BUFFER_SIZE - The Buffer was not a multiple of the block size of the
- device.
- EFI_INVALID_PARAMETER - The read request contains device addresses that are not
- valid for the device.
-
---*/
-{
- WIN_NT_BLOCK_IO_PRIVATE *Private;
- BOOL Flag;
- EFI_STATUS Status;
- DWORD BytesRead;
- EFI_TPL OldTpl;
-
- OldTpl = gBS->RaiseTPL (TPL_CALLBACK);
-
- Private = WIN_NT_BLOCK_IO_PRIVATE_DATA_FROM_THIS (This);
-
- Status = WinNtBlockIoReadWriteCommon (Private, MediaId, Lba, BufferSize, Buffer, "WinNtReadBlocks");
- if (EFI_ERROR (Status)) {
- goto Done;
- }
-
- Flag = Private->WinNtThunk->ReadFile (Private->NtHandle, Buffer, (DWORD) BufferSize, (LPDWORD) &BytesRead, NULL);
- if (!Flag || (BytesRead != BufferSize)) {
- DEBUG ((EFI_D_INIT, "ReadBlocks: ReadFile failed. (%d)\n", Private->WinNtThunk->GetLastError ()));
- Status = WinNtBlockIoError (Private);
- goto Done;
- }
-
- //
- // If we wrote then media is present.
- //
- This->Media->MediaPresent = TRUE;
- Status = EFI_SUCCESS;
-
-Done:
- gBS->RestoreTPL (OldTpl);
- return Status;
-}
-
-STATIC
-EFI_STATUS
-EFIAPI
-WinNtBlockIoWriteBlocks (
- IN EFI_BLOCK_IO_PROTOCOL *This,
- IN UINT32 MediaId,
- IN EFI_LBA Lba,
- IN UINTN BufferSize,
- IN VOID *Buffer
- )
-/*++
-
- Routine Description:
- Write BufferSize bytes from Lba into Buffer.
-
- Arguments:
- This - Protocol instance pointer.
- MediaId - Id of the media, changes every time the media is replaced.
- Lba - The starting Logical Block Address to read from
- BufferSize - Size of Buffer, must be a multiple of device block size.
- 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_BAD_BUFFER_SIZE - The Buffer was not a multiple of the block size of the
- device.
- EFI_INVALID_PARAMETER - The write request contains a LBA that is not
- valid for the device.
-
---*/
-{
- WIN_NT_BLOCK_IO_PRIVATE *Private;
- UINTN BytesWritten;
- BOOL Flag;
- EFI_STATUS Status;
- EFI_TPL OldTpl;
-
- OldTpl = gBS->RaiseTPL (TPL_CALLBACK);
-
- Private = WIN_NT_BLOCK_IO_PRIVATE_DATA_FROM_THIS (This);
-
- Status = WinNtBlockIoReadWriteCommon (Private, MediaId, Lba, BufferSize, Buffer, "WinNtWriteBlocks");
- if (EFI_ERROR (Status)) {
- goto Done;
- }
-
- Flag = Private->WinNtThunk->WriteFile (Private->NtHandle, Buffer, (DWORD) BufferSize, (LPDWORD) &BytesWritten, NULL);
- if (!Flag || (BytesWritten != BufferSize)) {
- DEBUG ((EFI_D_INIT, "ReadBlocks: WriteFile failed. (%d)\n", Private->WinNtThunk->GetLastError ()));
- Status = WinNtBlockIoError (Private);
- goto Done;
- }
-
- //
- // If the write succeeded, we are not write protected and media is present.
- //
- This->Media->MediaPresent = TRUE;
- This->Media->ReadOnly = FALSE;
- Status = EFI_SUCCESS;
-
-Done:
- gBS->RestoreTPL (OldTpl);
- return Status;
-
-}
-
-STATIC
-EFI_STATUS
-EFIAPI
-WinNtBlockIoFlushBlocks (
- IN EFI_BLOCK_IO_PROTOCOL *This
- )
-/*++
-
- Routine Description:
- Flush the Block Device.
-
- Arguments:
- This - Protocol instance pointer.
-
- Returns:
- EFI_SUCCESS - All outstanding data was written to the device
- EFI_DEVICE_ERROR - The device reported an error while writting back the data
- EFI_NO_MEDIA - There is no media in the device.
-
---*/
-{
- return EFI_SUCCESS;
-}
-
-STATIC
-EFI_STATUS
-EFIAPI
-WinNtBlockIoResetBlock (
- IN EFI_BLOCK_IO_PROTOCOL *This,
- IN BOOLEAN ExtendedVerification
- )
-/*++
-
- Routine Description:
- Reset the Block Device.
-
- Arguments:
- This - Protocol instance pointer.
- ExtendedVerification - Driver may perform diagnostics on reset.
-
- Returns:
- EFI_SUCCESS - The device was reset.
- EFI_DEVICE_ERROR - The device is not functioning properly and could
- not be reset.
-
---*/
-{
- WIN_NT_BLOCK_IO_PRIVATE *Private;
- EFI_TPL OldTpl;
-
- OldTpl = gBS->RaiseTPL (TPL_CALLBACK);
-
- Private = WIN_NT_BLOCK_IO_PRIVATE_DATA_FROM_THIS (This);
-
- if (Private->NtHandle != INVALID_HANDLE_VALUE) {
- Private->WinNtThunk->CloseHandle (Private->NtHandle);
- Private->NtHandle = INVALID_HANDLE_VALUE;
- }
-
- gBS->RestoreTPL (OldTpl);
-
- return EFI_SUCCESS;
-}
-
-UINTN
-Atoi (
- CHAR16 *String
- )
-/*++
-
-Routine Description:
-
- Convert a unicode string to a UINTN
-
-Arguments:
-
- String - Unicode string.
-
-Returns:
-
- UINTN of the number represented by String.
-
---*/
-{
- UINTN Number;
- CHAR16 *Str;
-
- //
- // skip preceeding white space
- //
- Str = String;
- while ((*Str) && (*Str == ' ')) {
- Str++;
- }
- //
- // Convert ot a Number
- //
- Number = 0;
- while (*Str != '\0') {
- if ((*Str >= '0') && (*Str <= '9')) {
- Number = (Number * 10) +*Str - '0';
- } else {
- break;
- }
-
- Str++;
- }
-
- return Number;
-}
-
-EFI_STATUS
-SetFilePointer64 (
- IN WIN_NT_BLOCK_IO_PRIVATE *Private,
- IN INT64 DistanceToMove,
- OUT UINT64 *NewFilePointer,
- IN DWORD MoveMethod
- )
-/*++
-
-This function extends the capability of SetFilePointer to accept 64 bit parameters
-
---*/
-// TODO: function comment is missing 'Routine Description:'
-// TODO: function comment is missing 'Arguments:'
-// TODO: function comment is missing 'Returns:'
-// TODO: Private - add argument and description to function comment
-// TODO: DistanceToMove - add argument and description to function comment
-// TODO: NewFilePointer - add argument and description to function comment
-// TODO: MoveMethod - add argument and description to function comment
-{
- EFI_STATUS Status;
- LARGE_INTEGER LargeInt;
- UINT32 ErrorCode;
-
- LargeInt.QuadPart = DistanceToMove;
- Status = EFI_SUCCESS;
-
- LargeInt.LowPart = Private->WinNtThunk->SetFilePointer (
- Private->NtHandle,
- LargeInt.LowPart,
- &LargeInt.HighPart,
- MoveMethod
- );
-
- if (LargeInt.LowPart == -1 &&
- (ErrorCode = Private->WinNtThunk->GetLastError ()) != NO_ERROR) {
- Status = EFI_INVALID_PARAMETER;
- }
-
- if (NewFilePointer != NULL) {
- *NewFilePointer = LargeInt.QuadPart;
- }
-
- return Status;
-}
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