X-Git-Url: https://git.proxmox.com/?p=mirror_edk2.git;a=blobdiff_plain;f=MdeModulePkg%2FUniversal%2FDisk%2FDiskIoDxe%2FDiskIo.c;h=4bd6772046310cd2e367e11dfa321012d49ea9fb;hp=b0d92c78b2d26a16e640dbf91724e19e46c0a72b;hb=493d8e3a5e86f78ef975e18dfa5754adce9e82de;hpb=48557c6550adecf39e1e8e140b1736275d070dfb
diff --git a/MdeModulePkg/Universal/Disk/DiskIoDxe/DiskIo.c b/MdeModulePkg/Universal/Disk/DiskIoDxe/DiskIo.c
index b0d92c78b2..4bd6772046 100644
--- a/MdeModulePkg/Universal/Disk/DiskIoDxe/DiskIo.c
+++ b/MdeModulePkg/Universal/Disk/DiskIoDxe/DiskIo.c
@@ -9,8 +9,8 @@
Aligned - A read of N contiguous sectors.
OverRun - The last byte is not on a sector boundary.
-Copyright (c) 2006 - 2008, Intel Corporation.
-All rights reserved. This program and the accompanying materials
+Copyright (c) 2006 - 2013, 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
@@ -45,10 +45,15 @@ DISK_IO_PRIVATE_DATA gDiskIoPrivateDataTemplate = {
DiskIoReadDisk,
DiskIoWriteDisk
},
- NULL
+ {
+ EFI_DISK_IO2_PROTOCOL_REVISION,
+ DiskIo2Cancel,
+ DiskIo2ReadDiskEx,
+ DiskIo2WriteDiskEx,
+ DiskIo2FlushDiskEx
+ }
};
-
/**
Test to see if this driver supports ControllerHandle.
@@ -92,11 +97,11 @@ DiskIoDriverBindingSupported (
// Close the I/O Abstraction(s) used to perform the supported test.
//
gBS->CloseProtocol (
- ControllerHandle,
- &gEfiBlockIoProtocolGuid,
- This->DriverBindingHandle,
- ControllerHandle
- );
+ ControllerHandle,
+ &gEfiBlockIoProtocolGuid,
+ This->DriverBindingHandle,
+ ControllerHandle
+ );
return EFI_SUCCESS;
}
@@ -124,12 +129,16 @@ DiskIoDriverBindingStart (
)
{
EFI_STATUS Status;
- DISK_IO_PRIVATE_DATA *Private;
+ DISK_IO_PRIVATE_DATA *Instance;
+ EFI_TPL OldTpl;
+ EFI_BLOCK_IO_MEDIA *Media;
- Private = NULL;
+ Instance = NULL;
+
+ OldTpl = gBS->RaiseTPL (TPL_CALLBACK);
//
- // Connect to the Block IO interface on ControllerHandle.
+ // Connect to the Block IO and Block IO2 interface on ControllerHandle.
//
Status = gBS->OpenProtocol (
ControllerHandle,
@@ -140,47 +149,95 @@ DiskIoDriverBindingStart (
EFI_OPEN_PROTOCOL_BY_DRIVER
);
if (EFI_ERROR (Status)) {
- return Status;
+ goto ErrorExit1;
+ }
+
+ Status = gBS->OpenProtocol (
+ ControllerHandle,
+ &gEfiBlockIo2ProtocolGuid,
+ (VOID **) &gDiskIoPrivateDataTemplate.BlockIo2,
+ This->DriverBindingHandle,
+ ControllerHandle,
+ EFI_OPEN_PROTOCOL_BY_DRIVER
+ );
+ if (EFI_ERROR (Status)) {
+ gDiskIoPrivateDataTemplate.BlockIo2 = NULL;
}
//
// Initialize the Disk IO device instance.
//
- Private = AllocateCopyPool (sizeof (DISK_IO_PRIVATE_DATA), &gDiskIoPrivateDataTemplate);
- if (Private == NULL) {
+ Instance = AllocateCopyPool (sizeof (DISK_IO_PRIVATE_DATA), &gDiskIoPrivateDataTemplate);
+ if (Instance == NULL) {
Status = EFI_OUT_OF_RESOURCES;
goto ErrorExit;
}
+ Media = Instance->BlockIo->Media;
+
+ //
+ // The BlockSize and IoAlign of BlockIo and BlockIo2 should equal.
+ //
+ ASSERT ((Instance->BlockIo2 == NULL) ||
+ ((Instance->BlockIo->Media->IoAlign == Instance->BlockIo2->Media->IoAlign) &&
+ (Instance->BlockIo->Media->BlockSize == Instance->BlockIo2->Media->BlockSize)
+ ));
+
+ InitializeListHead (&Instance->TaskQueue);
+ EfiInitializeLock (&Instance->TaskQueueLock, TPL_NOTIFY);
+ Instance->SharedWorkingBuffer = AllocateAlignedPages (
+ EFI_SIZE_TO_PAGES (DATA_BUFFER_BLOCK_NUM * Instance->BlockIo->Media->BlockSize),
+ Instance->BlockIo->Media->IoAlign
+ );
+ if (Instance->SharedWorkingBuffer == 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
- );
+ if (Instance->BlockIo2 != NULL) {
+ Status = gBS->InstallMultipleProtocolInterfaces (
+ &ControllerHandle,
+ &gEfiDiskIoProtocolGuid, &Instance->DiskIo,
+ &gEfiDiskIo2ProtocolGuid, &Instance->DiskIo2,
+ NULL
+ );
+ } else {
+ Status = gBS->InstallMultipleProtocolInterfaces (
+ &ControllerHandle,
+ &gEfiDiskIoProtocolGuid, &Instance->DiskIo,
+ NULL
+ );
+ }
ErrorExit:
if (EFI_ERROR (Status)) {
+ if (Instance != NULL && Instance->SharedWorkingBuffer != NULL) {
+ FreeAlignedPages (
+ Instance->SharedWorkingBuffer,
+ EFI_SIZE_TO_PAGES (DATA_BUFFER_BLOCK_NUM * Instance->BlockIo->Media->BlockSize)
+ );
+ }
- if (Private != NULL) {
- FreePool (Private);
+ if (Instance != NULL) {
+ FreePool (Instance);
}
gBS->CloseProtocol (
- ControllerHandle,
- &gEfiBlockIoProtocolGuid,
- This->DriverBindingHandle,
- ControllerHandle
- );
+ ControllerHandle,
+ &gEfiBlockIoProtocolGuid,
+ This->DriverBindingHandle,
+ ControllerHandle
+ );
}
+ErrorExit1:
+ gBS->RestoreTPL (OldTpl);
return Status;
}
-
/**
Stop this driver on ControllerHandle by removing Disk IO protocol and closing
the Block IO protocol on ControllerHandle.
@@ -206,7 +263,9 @@ DiskIoDriverBindingStop (
{
EFI_STATUS Status;
EFI_DISK_IO_PROTOCOL *DiskIo;
- DISK_IO_PRIVATE_DATA *Private;
+ EFI_DISK_IO2_PROTOCOL *DiskIo2;
+ DISK_IO_PRIVATE_DATA *Instance;
+ BOOLEAN AllTaskDone;
//
// Get our context back.
@@ -220,489 +279,947 @@ DiskIoDriverBindingStop (
EFI_OPEN_PROTOCOL_GET_PROTOCOL
);
if (EFI_ERROR (Status)) {
- return EFI_UNSUPPORTED;
+ return Status;
}
-
- Private = DISK_IO_PRIVATE_DATA_FROM_THIS (DiskIo);
-
- Status = gBS->UninstallProtocolInterface (
+ Status = gBS->OpenProtocol (
ControllerHandle,
- &gEfiDiskIoProtocolGuid,
- &Private->DiskIo
+ &gEfiDiskIo2ProtocolGuid,
+ (VOID **) &DiskIo2,
+ This->DriverBindingHandle,
+ ControllerHandle,
+ EFI_OPEN_PROTOCOL_GET_PROTOCOL
);
+ if (EFI_ERROR (Status)) {
+ DiskIo2 = NULL;
+ }
+
+ Instance = DISK_IO_PRIVATE_DATA_FROM_DISK_IO (DiskIo);
+
+ if (DiskIo2 != NULL) {
+ //
+ // Call BlockIo2::Reset() to terminate any in-flight non-blocking I/O requests
+ //
+ ASSERT (Instance->BlockIo2 != NULL);
+ Status = Instance->BlockIo2->Reset (Instance->BlockIo2, FALSE);
+ if (EFI_ERROR (Status)) {
+ return Status;
+ }
+ Status = gBS->UninstallMultipleProtocolInterfaces (
+ ControllerHandle,
+ &gEfiDiskIoProtocolGuid, &Instance->DiskIo,
+ &gEfiDiskIo2ProtocolGuid, &Instance->DiskIo2,
+ NULL
+ );
+ } else {
+ Status = gBS->UninstallMultipleProtocolInterfaces (
+ ControllerHandle,
+ &gEfiDiskIoProtocolGuid, &Instance->DiskIo,
+ NULL
+ );
+ }
if (!EFI_ERROR (Status)) {
+
+ do {
+ EfiAcquireLock (&Instance->TaskQueueLock);
+ AllTaskDone = IsListEmpty (&Instance->TaskQueue);
+ EfiReleaseLock (&Instance->TaskQueueLock);
+ } while (!AllTaskDone);
+
+ FreeAlignedPages (
+ Instance->SharedWorkingBuffer,
+ EFI_SIZE_TO_PAGES (DATA_BUFFER_BLOCK_NUM * Instance->BlockIo->Media->BlockSize)
+ );
+
Status = gBS->CloseProtocol (
ControllerHandle,
&gEfiBlockIoProtocolGuid,
This->DriverBindingHandle,
ControllerHandle
);
+ ASSERT_EFI_ERROR (Status);
+ if (DiskIo2 != NULL) {
+ Status = gBS->CloseProtocol (
+ ControllerHandle,
+ &gEfiBlockIo2ProtocolGuid,
+ This->DriverBindingHandle,
+ ControllerHandle
+ );
+ ASSERT_EFI_ERROR (Status);
+ }
+
+ FreePool (Instance);
}
- if (!EFI_ERROR (Status)) {
- FreePool (Private);
+ return Status;
+}
+
+
+/**
+ Destroy the sub task.
+
+ @param Subtask Subtask.
+
+ @return LIST_ENTRY * Pointer to the next link of subtask.
+**/
+LIST_ENTRY *
+DiskIoDestroySubtask (
+ IN DISK_IO_PRIVATE_DATA *Instance,
+ IN DISK_IO_SUBTASK *Subtask
+ )
+{
+ LIST_ENTRY *Link;
+ Link = RemoveEntryList (&Subtask->Link);
+ if (!Subtask->Blocking) {
+ if (Subtask->WorkingBuffer != NULL) {
+ FreeAlignedPages (
+ Subtask->WorkingBuffer,
+ Subtask->Length < Instance->BlockIo->Media->BlockSize
+ ? EFI_SIZE_TO_PAGES (Instance->BlockIo->Media->BlockSize)
+ : EFI_SIZE_TO_PAGES (Subtask->Length)
+ );
+ }
+ if (Subtask->BlockIo2Token.Event != NULL) {
+ gBS->CloseEvent (Subtask->BlockIo2Token.Event);
+ }
}
+ FreePool (Subtask);
- return Status;
+ return Link;
}
+/**
+ The callback for the BlockIo2 ReadBlocksEx/WriteBlocksEx.
+ @param Event Event whose notification function is being invoked.
+ @param Context The pointer to the notification function's context,
+ which points to the DISK_IO_SUBTASK instance.
+**/
+VOID
+EFIAPI
+DiskIo2OnReadWriteComplete (
+ IN EFI_EVENT Event,
+ IN VOID *Context
+ )
+{
+ DISK_IO_SUBTASK *Subtask;
+ DISK_IO2_TASK *Task;
+ EFI_STATUS TransactionStatus;
+ DISK_IO_PRIVATE_DATA *Instance;
+
+ gBS->CloseEvent (Event);
+ Subtask = (DISK_IO_SUBTASK *) Context;
+ TransactionStatus = Subtask->BlockIo2Token.TransactionStatus;
+ Task = Subtask->Task;
+ Instance = Task->Instance;
+
+ ASSERT (Subtask->Signature == DISK_IO_SUBTASK_SIGNATURE);
+ ASSERT (Instance->Signature == DISK_IO_PRIVATE_DATA_SIGNATURE);
+ ASSERT (Task->Signature == DISK_IO2_TASK_SIGNATURE);
+
+ if (Subtask->WorkingBuffer != NULL) {
+ if (!EFI_ERROR (TransactionStatus) && (Task->Token != NULL) && !Subtask->Write) {
+ CopyMem (Subtask->Buffer, Subtask->WorkingBuffer + Subtask->Offset, Subtask->Length);
+ }
+
+ //
+ // The WorkingBuffer of blocking subtask either points to SharedWorkingBuffer
+ // or will be used by non-blocking subtask which will be freed below.
+ //
+ if (!Subtask->Blocking) {
+ FreeAlignedPages (
+ Subtask->WorkingBuffer,
+ Subtask->Length < Instance->BlockIo->Media->BlockSize
+ ? EFI_SIZE_TO_PAGES (Instance->BlockIo->Media->BlockSize)
+ : EFI_SIZE_TO_PAGES (Subtask->Length)
+ );
+ }
+ }
+ RemoveEntryList (&Subtask->Link);
+ FreePool (Subtask);
+
+ if (EFI_ERROR (TransactionStatus) || IsListEmpty (&Task->Subtasks)) {
+ if (Task->Token != NULL) {
+ //
+ // Signal error status once the subtask is failed.
+ // Or signal the last status once the last subtask is finished.
+ //
+ Task->Token->TransactionStatus = TransactionStatus;
+ gBS->SignalEvent (Task->Token->Event);
+
+ //
+ // Mark token to NULL
+ //
+ Task->Token = NULL;
+ }
+ }
+
+ if (IsListEmpty (&Task->Subtasks)) {
+ EfiAcquireLock (&Instance->TaskQueueLock);
+ RemoveEntryList (&Task->Link);
+ EfiReleaseLock (&Instance->TaskQueueLock);
+
+ FreePool (Task);
+ }
+}
/**
- 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.
+ Create the subtask.
- @param This Protocol instance pointer.
- @param MediaId Id of the media, changes every time the media is replaced.
- @param Offset The starting byte offset to read from
- @param BufferSize Size of Buffer
- @param Buffer Buffer containing read data
+ @param Write TRUE: Write request; FALSE: Read request.
+ @param Lba The starting logical block address to read from on the device.
+ @param Offset The starting byte offset to read from the LBA.
+ @param Length The number of bytes to read from the device.
+ @param WorkingBuffer The aligned buffer to hold the data for reading or writing.
+ @param Buffer The buffer to hold the data for reading or writing.
+ @param Blocking TRUE: Blocking request; FALSE: Non-blocking request.
- @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_CHNAGED The MediaId does not matched the current device.
- @retval EFI_INVALID_PARAMETER The read request contains device addresses that are not
- valid for the device.
+ @return A pointer to the created subtask.
+**/
+DISK_IO_SUBTASK *
+DiskIoCreateSubtask (
+ IN BOOLEAN Write,
+ IN UINT64 Lba,
+ IN UINT32 Offset,
+ IN UINTN Length,
+ IN VOID *WorkingBuffer, OPTIONAL
+ IN VOID *Buffer,
+ IN BOOLEAN Blocking
+ )
+{
+ DISK_IO_SUBTASK *Subtask;
+ EFI_STATUS Status;
+ Subtask = AllocateZeroPool (sizeof (DISK_IO_SUBTASK));
+ if (Subtask == NULL) {
+ return NULL;
+ }
+ Subtask->Signature = DISK_IO_SUBTASK_SIGNATURE;
+ Subtask->Write = Write;
+ Subtask->Lba = Lba;
+ Subtask->Offset = Offset;
+ Subtask->Length = Length;
+ Subtask->WorkingBuffer = WorkingBuffer;
+ Subtask->Buffer = Buffer;
+ Subtask->Blocking = Blocking;
+ if (!Blocking) {
+ Status = gBS->CreateEvent (
+ EVT_NOTIFY_SIGNAL,
+ TPL_NOTIFY,
+ DiskIo2OnReadWriteComplete,
+ Subtask,
+ &Subtask->BlockIo2Token.Event
+ );
+ if (EFI_ERROR (Status)) {
+ FreePool (Subtask);
+ return NULL;
+ }
+ }
+ DEBUG ((
+ EFI_D_BLKIO,
+ " %c:Lba/Offset/Length/WorkingBuffer/Buffer = %016lx/%08x/%08x/%08x/%08x\n",
+ Write ? 'W': 'R', Lba, Offset, Length, WorkingBuffer, Buffer
+ ));
+
+ return Subtask;
+}
+
+/**
+ Create the subtask list.
+
+ @param Instance Pointer to the DISK_IO_PRIVATE_DATA.
+ @param Write TRUE: Write request; FALSE: Read request.
+ @param Offset The starting byte offset to read from the device.
+ @param BufferSize The size in bytes of Buffer. The number of bytes to read from the device.
+ @param Buffer A pointer to the buffer for the data.
+ @param Blocking TRUE: Blocking request; FALSE: Non-blocking request.
+ @param SharedWorkingBuffer The aligned buffer to hold the data for reading or writing.
+ @param Subtasks The subtask list header.
+
+ @retval TRUE The subtask list is created successfully.
+ @retval FALSE The subtask list is not created.
**/
-EFI_STATUS
-EFIAPI
-DiskIoReadDisk (
- IN EFI_DISK_IO_PROTOCOL *This,
- IN UINT32 MediaId,
+BOOLEAN
+DiskIoCreateSubtaskList (
+ IN DISK_IO_PRIVATE_DATA *Instance,
+ IN BOOLEAN Write,
IN UINT64 Offset,
IN UINTN BufferSize,
- OUT VOID *Buffer
+ IN VOID *Buffer,
+ IN BOOLEAN Blocking,
+ IN VOID *SharedWorkingBuffer,
+ IN OUT LIST_ENTRY *Subtasks
)
{
- EFI_STATUS Status;
- DISK_IO_PRIVATE_DATA *Private;
- EFI_BLOCK_IO_PROTOCOL *BlockIo;
- EFI_BLOCK_IO_MEDIA *Media;
UINT32 BlockSize;
+ UINT32 IoAlign;
UINT64 Lba;
UINT64 OverRunLba;
UINT32 UnderRun;
UINT32 OverRun;
- BOOLEAN TransactionComplete;
- UINTN WorkingBufferSize;
- UINT8 *WorkingBuffer;
+ UINT8 *BufferPtr;
UINTN Length;
- UINT8 *Data;
- UINT8 *PreData;
- UINTN IsBufferAligned;
UINTN DataBufferSize;
- BOOLEAN LastRead;
+ DISK_IO_SUBTASK *Subtask;
+ VOID *WorkingBuffer;
+ LIST_ENTRY *Link;
- Private = DISK_IO_PRIVATE_DATA_FROM_THIS (This);
+ DEBUG ((EFI_D_BLKIO, "DiskIo: Create subtasks for task: Offset/BufferSize/Buffer = %016lx/%08x/%08x\n", Offset, BufferSize, Buffer));
- BlockIo = Private->BlockIo;
- Media = BlockIo->Media;
- BlockSize = Media->BlockSize;
-
- if (Media->MediaId != MediaId) {
- return EFI_MEDIA_CHANGED;
+ BlockSize = Instance->BlockIo->Media->BlockSize;
+ IoAlign = Instance->BlockIo->Media->IoAlign;
+ if (IoAlign == 0) {
+ IoAlign = 1;
}
-
- WorkingBuffer = Buffer;
- WorkingBufferSize = BufferSize;
+
+ Lba = DivU64x32Remainder (Offset, BlockSize, &UnderRun);
+ BufferPtr = (UINT8 *) Buffer;
//
- // Allocate a temporary buffer for operation
+ // Special handling for zero BufferSize
//
- 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;
+ if (BufferSize == 0) {
+ Subtask = DiskIoCreateSubtask (Write, Lba, UnderRun, 0, NULL, BufferPtr, Blocking);
+ if (Subtask == NULL) {
+ goto Done;
+ }
+ InsertTailList (Subtasks, &Subtask->Link);
+ return TRUE;
}
- 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;
+ Length = MIN (BlockSize - UnderRun, BufferSize);
+ if (Blocking) {
+ WorkingBuffer = SharedWorkingBuffer;
+ } else {
+ WorkingBuffer = AllocateAlignedPages (EFI_SIZE_TO_PAGES (BlockSize), IoAlign);
+ if (WorkingBuffer == NULL) {
+ goto Done;
+ }
+ }
+ if (Write) {
+ //
+ // A half write operation can be splitted to a blocking block-read and half write operation
+ // This can simplify the sub task processing logic
+ //
+ Subtask = DiskIoCreateSubtask (FALSE, Lba, 0, BlockSize, NULL, WorkingBuffer, TRUE);
+ if (Subtask == NULL) {
+ goto Done;
+ }
+ InsertTailList (Subtasks, &Subtask->Link);
}
- if (Length > BufferSize) {
- Length = BufferSize;
- TransactionComplete = TRUE;
+ Subtask = DiskIoCreateSubtask (Write, Lba, UnderRun, Length, WorkingBuffer, BufferPtr, Blocking);
+ if (Subtask == NULL) {
+ goto Done;
}
+ InsertTailList (Subtasks, &Subtask->Link);
+
+ BufferPtr += Length;
+ Offset += Length;
+ BufferSize -= Length;
+ Lba ++;
+ }
- CopyMem (WorkingBuffer, Data + UnderRun, Length);
+ OverRunLba = Lba + DivU64x32Remainder (BufferSize, BlockSize, &OverRun);
+ BufferSize -= OverRun;
- WorkingBuffer += Length;
+ if (OverRun != 0) {
+ if (Blocking) {
+ WorkingBuffer = SharedWorkingBuffer;
+ } else {
+ WorkingBuffer = AllocateAlignedPages (EFI_SIZE_TO_PAGES (BlockSize), IoAlign);
+ if (WorkingBuffer == NULL) {
+ goto Done;
+ }
+ }
+ if (Write) {
+ //
+ // A half write operation can be splitted to a blocking block-read and half write operation
+ // This can simplify the sub task processing logic
+ //
+ Subtask = DiskIoCreateSubtask (FALSE, OverRunLba, 0, BlockSize, NULL, WorkingBuffer, TRUE);
+ if (Subtask == NULL) {
+ goto Done;
+ }
+ InsertTailList (Subtasks, &Subtask->Link);
+ }
- WorkingBufferSize -= Length;
- if (WorkingBufferSize == 0) {
+ Subtask = DiskIoCreateSubtask (Write, OverRunLba, 0, OverRun, WorkingBuffer, BufferPtr, Blocking);
+ if (Subtask == NULL) {
goto Done;
}
-
- Lba += 1;
+ InsertTailList (Subtasks, &Subtask->Link);
}
-
- OverRunLba = Lba + DivU64x32Remainder (WorkingBufferSize, BlockSize, &OverRun);
-
- if (!TransactionComplete && WorkingBufferSize >= BlockSize) {
+
+ if (OverRunLba > Lba) {
//
// 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)) {
+ if (ALIGN_POINTER (BufferPtr, IoAlign) == BufferPtr) {
+ Subtask = DiskIoCreateSubtask (Write, Lba, 0, BufferSize, NULL, BufferPtr, Blocking);
+ if (Subtask == NULL) {
goto Done;
}
+ InsertTailList (Subtasks, &Subtask->Link);
- WorkingBuffer += WorkingBufferSize;
+ BufferPtr += BufferSize;
+ Offset += BufferSize;
+ BufferSize -= BufferSize;
} 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) {
+ if (Blocking) {
+ //
+ // Use the allocated buffer instead of the original buffer
+ // to avoid alignment issue.
+ //
+ for (; Lba < OverRunLba; Lba += DATA_BUFFER_BLOCK_NUM) {
+ DataBufferSize = MIN (BufferSize, DATA_BUFFER_BLOCK_NUM * BlockSize);
+
+ Subtask = DiskIoCreateSubtask (Write, Lba, 0, DataBufferSize, SharedWorkingBuffer, BufferPtr, Blocking);
+ if (Subtask == NULL) {
+ goto Done;
+ }
+ InsertTailList (Subtasks, &Subtask->Link);
+
+ BufferPtr += DataBufferSize;
+ Offset += DataBufferSize;
+ BufferSize -= DataBufferSize;
+ }
+ } else {
+ WorkingBuffer = AllocateAlignedPages (EFI_SIZE_TO_PAGES (BufferSize), IoAlign);
+ if (WorkingBuffer == NULL) {
//
- // It is the last calling to readblocks in this loop
+ // If there is not enough memory, downgrade to blocking access
//
- DataBufferSize = WorkingBufferSize;
- LastRead = TRUE;
+ DEBUG ((EFI_D_VERBOSE, "DiskIo: No enough memory so downgrade to blocking access\n"));
+ if (!DiskIoCreateSubtaskList (Instance, Write, Offset, BufferSize, BufferPtr, TRUE, SharedWorkingBuffer, Subtasks)) {
+ goto Done;
+ }
+ } else {
+ Subtask = DiskIoCreateSubtask (Write, Lba, 0, BufferSize, WorkingBuffer, BufferPtr, Blocking);
+ if (Subtask == NULL) {
+ goto Done;
+ }
+ InsertTailList (Subtasks, &Subtask->Link);
}
- 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);
+ BufferPtr += BufferSize;
+ Offset += BufferSize;
+ BufferSize -= BufferSize;
+ }
}
}
- if (!TransactionComplete && OverRun != 0) {
- //
- // Last read is not a complete block.
- //
- Status = BlockIo->ReadBlocks (
- BlockIo,
- MediaId,
- OverRunLba,
- BlockSize,
- Data
- );
+ ASSERT (BufferSize == 0);
- if (EFI_ERROR (Status)) {
- goto Done;
- }
-
- CopyMem (WorkingBuffer, Data, OverRun);
- }
+ return TRUE;
Done:
- if (PreData != NULL) {
- FreePool (PreData);
+ //
+ // Remove all the subtasks.
+ //
+ for (Link = GetFirstNode (Subtasks); !IsNull (Subtasks, Link); ) {
+ Subtask = CR (Link, DISK_IO_SUBTASK, Link, DISK_IO_SUBTASK_SIGNATURE);
+ Link = DiskIoDestroySubtask (Instance, Subtask);
}
-
- return Status;
+ return FALSE;
}
-
/**
- Writes BufferSize bytes from Buffer into Offset.
- 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.
-
- @param This Protocol instance pointer.
- @param MediaId Id of the media, changes every time the media is replaced.
- @param Offset The starting byte offset to read from
- @param BufferSize Size of Buffer
- @param Buffer Buffer containing read data
+ Terminate outstanding asynchronous requests to a device.
- @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_INVALID_PARAMETER The write request contains device addresses that are not
- valid for the device.
+ @param This Indicates a pointer to the calling context.
+ @retval EFI_SUCCESS All outstanding requests were successfully terminated.
+ @retval EFI_DEVICE_ERROR The device reported an error while performing the cancel
+ operation.
**/
EFI_STATUS
EFIAPI
-DiskIoWriteDisk (
- IN EFI_DISK_IO_PROTOCOL *This,
- IN UINT32 MediaId,
- IN UINT64 Offset,
- IN UINTN BufferSize,
- IN VOID *Buffer
+DiskIo2Cancel (
+ IN EFI_DISK_IO2_PROTOCOL *This
)
{
- 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;
+ DISK_IO_PRIVATE_DATA *Instance;
+ DISK_IO2_TASK *Task;
+ LIST_ENTRY *Link;
+
+ Instance = DISK_IO_PRIVATE_DATA_FROM_DISK_IO2 (This);
- Private = DISK_IO_PRIVATE_DATA_FROM_THIS (This);
+ EfiAcquireLock (&Instance->TaskQueueLock);
- BlockIo = Private->BlockIo;
- Media = BlockIo->Media;
- BlockSize = Media->BlockSize;
+ for (Link = GetFirstNode (&Instance->TaskQueue)
+ ; !IsNull (&Instance->TaskQueue, Link)
+ ; Link = GetNextNode (&Instance->TaskQueue, Link)
+ ) {
+ Task = CR (Link, DISK_IO2_TASK, Link, DISK_IO2_TASK_SIGNATURE);
- if (Media->ReadOnly) {
- return EFI_WRITE_PROTECTED;
+ if (Task->Token != NULL) {
+ Task->Token->TransactionStatus = EFI_ABORTED;
+ gBS->SignalEvent (Task->Token->Event);
+ //
+ // Set Token to NULL so that the further BlockIo2 responses will be ignored
+ //
+ Task->Token = NULL;
+ }
}
- if (Media->MediaId != MediaId) {
- return EFI_MEDIA_CHANGED;
- }
+ EfiReleaseLock (&Instance->TaskQueueLock);
- DataBufferSize = BlockSize * DATA_BUFFER_BLOCK_NUM;
+ return EFI_SUCCESS;
+}
- if (Media->IoAlign > 1) {
- PreData = AllocatePool (DataBufferSize + Media->IoAlign);
- Data = PreData - ((UINTN) PreData & (Media->IoAlign - 1)) + Media->IoAlign;
- } else {
- PreData = AllocatePool (DataBufferSize);
- Data = PreData;
- }
+/**
+ Common routine to access the disk.
+
+ @param Instance Pointer to the DISK_IO_PRIVATE_DATA.
+ @param Write TRUE: Write operation; FALSE: Read operation.
+ @param MediaId ID of the medium to access.
+ @param Offset The starting byte offset on the logical block I/O device to access.
+ @param Token A pointer to the token associated with the transaction.
+ If this field is NULL, synchronous/blocking IO is performed.
+ @param BufferSize The size in bytes of Buffer. The number of bytes to read from the device.
+ @param Buffer A pointer to the destination buffer for the data.
+ The caller is responsible either having implicit or explicit ownership of the buffer.
+**/
+EFI_STATUS
+DiskIo2ReadWriteDisk (
+ IN DISK_IO_PRIVATE_DATA *Instance,
+ IN BOOLEAN Write,
+ IN UINT32 MediaId,
+ IN UINT64 Offset,
+ IN EFI_DISK_IO2_TOKEN *Token,
+ IN UINTN BufferSize,
+ IN UINT8 *Buffer
+ )
+{
+ EFI_STATUS Status;
+ EFI_BLOCK_IO_PROTOCOL *BlockIo;
+ EFI_BLOCK_IO2_PROTOCOL *BlockIo2;
+ EFI_BLOCK_IO_MEDIA *Media;
+ LIST_ENTRY *Link;
+ LIST_ENTRY Subtasks;
+ DISK_IO_SUBTASK *Subtask;
+ DISK_IO2_TASK *Task;
+ BOOLEAN TaskQueueEmpty;
+ EFI_TPL OldTpl;
+ BOOLEAN Blocking;
+ LIST_ENTRY *SubtasksPtr;
+
+ Task = NULL;
+ BlockIo = Instance->BlockIo;
+ BlockIo2 = Instance->BlockIo2;
+ Media = BlockIo->Media;
+ Status = EFI_SUCCESS;
+ Blocking = ((Token == NULL) || (Token->Event == NULL));
- if (PreData == NULL) {
- return EFI_OUT_OF_RESOURCES;
+ if (Media->MediaId != MediaId) {
+ return EFI_MEDIA_CHANGED;
}
-
- WorkingBuffer = Buffer;
- WorkingBufferSize = BufferSize;
-
- Lba = DivU64x32Remainder (Offset, BlockSize, &UnderRun);
-
- Length = BlockSize - UnderRun;
- TransactionComplete = FALSE;
-
- Status = EFI_SUCCESS;
- if (UnderRun != 0) {
+
+ if (Write && Media->ReadOnly) {
+ return EFI_WRITE_PROTECTED;
+ }
+
+ if (Blocking) {
//
- // Offset starts in the middle of an Lba, so do read modify write.
+ // Wait till pending async task is completed.
//
- Status = BlockIo->ReadBlocks (
- BlockIo,
- MediaId,
- Lba,
- BlockSize,
- Data
- );
+ do {
+ EfiAcquireLock (&Instance->TaskQueueLock);
+ TaskQueueEmpty = IsListEmpty (&Instance->TaskQueue);
+ EfiReleaseLock (&Instance->TaskQueueLock);
+ } while (!TaskQueueEmpty);
- if (EFI_ERROR (Status)) {
- goto Done;
- }
-
- if (Length > BufferSize) {
- Length = BufferSize;
- TransactionComplete = TRUE;
+ SubtasksPtr = &Subtasks;
+ } else {
+ Task = AllocatePool (sizeof (DISK_IO2_TASK));
+ if (Task == NULL) {
+ return EFI_OUT_OF_RESOURCES;
}
+
+ EfiAcquireLock (&Instance->TaskQueueLock);
+ InsertTailList (&Instance->TaskQueue, &Task->Link);
+ EfiReleaseLock (&Instance->TaskQueueLock);
- CopyMem (Data + UnderRun, WorkingBuffer, Length);
+ Task->Signature = DISK_IO2_TASK_SIGNATURE;
+ Task->Instance = Instance;
+ Task->Token = Token;
- Status = BlockIo->WriteBlocks (
- BlockIo,
- MediaId,
- Lba,
- BlockSize,
- Data
- );
- if (EFI_ERROR (Status)) {
- goto Done;
- }
+ SubtasksPtr = &Task->Subtasks;
+ }
- WorkingBuffer += Length;
- WorkingBufferSize -= Length;
- if (WorkingBufferSize == 0) {
- goto Done;
+ InitializeListHead (SubtasksPtr);
+ if (!DiskIoCreateSubtaskList (Instance, Write, Offset, BufferSize, Buffer, Blocking, Instance->SharedWorkingBuffer, SubtasksPtr)) {
+ if (Task != NULL) {
+ FreePool (Task);
}
-
- Lba += 1;
+ return EFI_OUT_OF_RESOURCES;
}
+ ASSERT (!IsListEmpty (SubtasksPtr));
- OverRunLba = Lba + DivU64x32Remainder (WorkingBufferSize, BlockSize, &OverRun);
+ OldTpl = gBS->RaiseTPL (TPL_CALLBACK);
+ for (Link = GetFirstNode (SubtasksPtr); !IsNull (SubtasksPtr, Link); Link = GetNextNode (SubtasksPtr, Link)) {
+ Subtask = CR (Link, DISK_IO_SUBTASK, Link, DISK_IO_SUBTASK_SIGNATURE);
- if (!TransactionComplete && WorkingBufferSize >= BlockSize) {
- //
- // If the DiskIo maps directly to a BlockIo device do the write.
- //
- if (OverRun != 0) {
- WorkingBufferSize -= OverRun;
+ if (!Subtask->Blocking) {
+ Subtask->Task = Task;
}
- //
- // Check buffer alignment
- //
- IsBufferAligned = (UINTN) WorkingBuffer & (UINTN) (Media->IoAlign - 1);
- if (Media->IoAlign <= 1 || IsBufferAligned == 0) {
+ if (Subtask->Write) {
//
- // Alignment is satisfied, so write them together
+ // Write
//
- Status = BlockIo->WriteBlocks (
- BlockIo,
- MediaId,
- Lba,
- WorkingBufferSize,
- WorkingBuffer
- );
-
- if (EFI_ERROR (Status)) {
- goto Done;
+ if (Subtask->WorkingBuffer != NULL) {
+ //
+ // A sub task before this one should be a block read operation, causing the WorkingBuffer filled with the entire one block data.
+ //
+ CopyMem (Subtask->WorkingBuffer + Subtask->Offset, Subtask->Buffer, Subtask->Length);
}
- WorkingBuffer += WorkingBufferSize;
+ if (Subtask->Blocking) {
+ Status = BlockIo->WriteBlocks (
+ BlockIo,
+ MediaId,
+ Subtask->Lba,
+ Subtask->Length < Media->BlockSize ? Media->BlockSize : Subtask->Length,
+ (Subtask->WorkingBuffer != NULL) ? Subtask->WorkingBuffer : Subtask->Buffer
+ );
+ } else {
+ Status = BlockIo2->WriteBlocksEx (
+ BlockIo2,
+ MediaId,
+ Subtask->Lba,
+ &Subtask->BlockIo2Token,
+ Subtask->Length < Media->BlockSize ? Media->BlockSize : Subtask->Length,
+ (Subtask->WorkingBuffer != NULL) ? Subtask->WorkingBuffer : Subtask->Buffer
+ );
+ }
} else {
//
- // The buffer parameter is not aligned with the request
- // So use the allocated instead.
- // It can fit almost all the cases.
+ // Read
//
- 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 (
+ if (Subtask->Blocking) {
+ Status = BlockIo->ReadBlocks (
BlockIo,
MediaId,
- Lba,
- DataBufferSize,
- Data
+ Subtask->Lba,
+ Subtask->Length < Media->BlockSize ? Media->BlockSize : Subtask->Length,
+ (Subtask->WorkingBuffer != NULL) ? Subtask->WorkingBuffer : Subtask->Buffer
);
- if (EFI_ERROR (Status)) {
- goto Done;
+ if (!EFI_ERROR (Status) && (Subtask->WorkingBuffer != NULL)) {
+ CopyMem (Subtask->Buffer, Subtask->WorkingBuffer + Subtask->Offset, Subtask->Length);
}
-
- WorkingBufferSize -= DataBufferSize;
- WorkingBuffer += DataBufferSize;
- Lba += DATA_BUFFER_BLOCK_NUM;
- } while (!LastWrite);
+ } else {
+ Status = BlockIo2->ReadBlocksEx (
+ BlockIo2,
+ MediaId,
+ Subtask->Lba,
+ &Subtask->BlockIo2Token,
+ Subtask->Length < Media->BlockSize ? Media->BlockSize : Subtask->Length,
+ (Subtask->WorkingBuffer != NULL) ? Subtask->WorkingBuffer : Subtask->Buffer
+ );
+ }
+ }
+
+ if (EFI_ERROR (Status)) {
+ break;
}
}
+
+ gBS->RaiseTPL (TPL_NOTIFY);
- 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
- );
+ //
+ // Remove all the remaining subtasks when failure.
+ // We shouldn't remove all the tasks because the non-blocking requests have been submitted and cannot be canceled.
+ //
+ if (EFI_ERROR (Status)) {
+ while (!IsNull (SubtasksPtr, Link)) {
+ Subtask = CR (Link, DISK_IO_SUBTASK, Link, DISK_IO_SUBTASK_SIGNATURE);
+ Link = DiskIoDestroySubtask (Instance, Subtask);
+ }
+ }
- if (EFI_ERROR (Status)) {
- goto Done;
+ //
+ // Remove all the blocking subtasks because the non-blocking callback only removes the non-blocking subtask.
+ //
+ for (Link = GetFirstNode (SubtasksPtr); !IsNull (SubtasksPtr, Link); ) {
+ Subtask = CR (Link, DISK_IO_SUBTASK, Link, DISK_IO_SUBTASK_SIGNATURE);
+ if (Subtask->Blocking) {
+ Link = DiskIoDestroySubtask (Instance, Subtask);
+ } else {
+ Link = GetNextNode (SubtasksPtr, Link);
}
+ }
- CopyMem (Data, WorkingBuffer, OverRun);
+ //
+ // It's possible that the callback runs before raising TPL to NOTIFY,
+ // so the subtasks list only contains blocking subtask.
+ // Remove the Task after the blocking subtasks are removed in above.
+ //
+ if (!Blocking && IsListEmpty (SubtasksPtr)) {
+ EfiAcquireLock (&Instance->TaskQueueLock);
+ RemoveEntryList (&Task->Link);
+ EfiReleaseLock (&Instance->TaskQueueLock);
- Status = BlockIo->WriteBlocks (
- BlockIo,
- MediaId,
- OverRunLba,
- BlockSize,
- Data
- );
- if (EFI_ERROR (Status)) {
- goto Done;
+ if (Task->Token != NULL) {
+ //
+ // Task->Token should be set to NULL by the DiskIo2OnReadWriteComplete
+ // It it's not, that means the non-blocking request was downgraded to blocking request.
+ //
+ DEBUG ((EFI_D_VERBOSE, "DiskIo: Non-blocking request was downgraded to blocking request, signal event directly.\n"));
+ Task->Token->TransactionStatus = Status;
+ gBS->SignalEvent (Task->Token->Event);
}
+
+ FreePool (Task);
}
-Done:
- if (PreData != NULL) {
- FreePool (PreData);
+ gBS->RestoreTPL (OldTpl);
+
+ return Status;
+}
+
+/**
+ Reads a specified number of bytes from a device.
+
+ @param This Indicates a pointer to the calling context.
+ @param MediaId ID of the medium to be read.
+ @param Offset The starting byte offset on the logical block I/O device to read from.
+ @param Token A pointer to the token associated with the transaction.
+ If this field is NULL, synchronous/blocking IO is performed.
+ @param BufferSize The size in bytes of Buffer. The number of bytes to read from the device.
+ @param Buffer A pointer to the destination buffer for the data.
+ The caller is responsible either having implicit or explicit ownership of the buffer.
+
+ @retval EFI_SUCCESS If Event is NULL (blocking I/O): The data was read correctly from the device.
+ If Event is not NULL (asynchronous I/O): The request was successfully queued for processing.
+ Event will be signaled upon completion.
+ @retval EFI_DEVICE_ERROR The device reported an error while performing the write.
+ @retval EFI_NO_MEDIA There is no medium in the device.
+ @retval EFI_MEDIA_CHNAGED The MediaId is not for the current medium.
+ @retval EFI_INVALID_PARAMETER The read request contains device addresses that are not valid for the device.
+ @retval EFI_OUT_OF_RESOURCES The request could not be completed due to a lack of resources.
+
+**/
+EFI_STATUS
+EFIAPI
+DiskIo2ReadDiskEx (
+ IN EFI_DISK_IO2_PROTOCOL *This,
+ IN UINT32 MediaId,
+ IN UINT64 Offset,
+ IN OUT EFI_DISK_IO2_TOKEN *Token,
+ IN UINTN BufferSize,
+ OUT VOID *Buffer
+ )
+{
+ return DiskIo2ReadWriteDisk (
+ DISK_IO_PRIVATE_DATA_FROM_DISK_IO2 (This),
+ FALSE, MediaId, Offset, Token, BufferSize, (UINT8 *) Buffer
+ );
+}
+
+/**
+ Writes a specified number of bytes to a device.
+
+ @param This Indicates a pointer to the calling context.
+ @param MediaId ID of the medium to be written.
+ @param Offset The starting byte offset on the logical block I/O device to write to.
+ @param Token A pointer to the token associated with the transaction.
+ If this field is NULL, synchronous/blocking IO is performed.
+ @param BufferSize The size in bytes of Buffer. The number of bytes to write to the device.
+ @param Buffer A pointer to the buffer containing the data to be written.
+
+ @retval EFI_SUCCESS If Event is NULL (blocking I/O): The data was written correctly to the device.
+ If Event is not NULL (asynchronous I/O): The request was successfully queued for processing.
+ Event will be signaled upon completion.
+ @retval EFI_WRITE_PROTECTED The device cannot be written to.
+ @retval EFI_DEVICE_ERROR The device reported an error while performing the write operation.
+ @retval EFI_NO_MEDIA There is no medium in the device.
+ @retval EFI_MEDIA_CHNAGED The MediaId is not for the current medium.
+ @retval EFI_INVALID_PARAMETER The write request contains device addresses that are not valid for the device.
+ @retval EFI_OUT_OF_RESOURCES The request could not be completed due to a lack of resources.
+
+**/
+EFI_STATUS
+EFIAPI
+DiskIo2WriteDiskEx (
+ IN EFI_DISK_IO2_PROTOCOL *This,
+ IN UINT32 MediaId,
+ IN UINT64 Offset,
+ IN OUT EFI_DISK_IO2_TOKEN *Token,
+ IN UINTN BufferSize,
+ IN VOID *Buffer
+ )
+{
+ return DiskIo2ReadWriteDisk (
+ DISK_IO_PRIVATE_DATA_FROM_DISK_IO2 (This),
+ TRUE, MediaId, Offset, Token, BufferSize, (UINT8 *) Buffer
+ );
+}
+
+/**
+ The callback for the BlockIo2 FlushBlocksEx.
+ @param Event Event whose notification function is being invoked.
+ @param Context The pointer to the notification function's context,
+ which points to the DISK_IO2_FLUSH_TASK instance.
+**/
+VOID
+EFIAPI
+DiskIo2OnFlushComplete (
+ IN EFI_EVENT Event,
+ IN VOID *Context
+ )
+{
+ DISK_IO2_FLUSH_TASK *Task;
+
+ gBS->CloseEvent (Event);
+
+ Task = (DISK_IO2_FLUSH_TASK *) Context;
+ ASSERT (Task->Signature == DISK_IO2_FLUSH_TASK_SIGNATURE);
+ Task->Token->TransactionStatus = Task->BlockIo2Token.TransactionStatus;
+ gBS->SignalEvent (Task->Token->Event);
+}
+
+/**
+ Flushes all modified data to the physical device.
+
+ @param This Indicates a pointer to the calling context.
+ @param Token A pointer to the token associated with the transaction.
+ If this field is NULL, synchronous/blocking IO is performed.
+
+ @retval EFI_SUCCESS If Event is NULL (blocking I/O): The data was flushed successfully to the device.
+ If Event is not NULL (asynchronous I/O): The request was successfully queued for processing.
+ Event will be signaled upon completion.
+ @retval EFI_WRITE_PROTECTED The device cannot be written to.
+ @retval EFI_DEVICE_ERROR The device reported an error while performing the write operation.
+ @retval EFI_NO_MEDIA There is no medium in the device.
+ @retval EFI_OUT_OF_RESOURCES The request could not be completed due to a lack of resources.
+**/
+EFI_STATUS
+EFIAPI
+DiskIo2FlushDiskEx (
+ IN EFI_DISK_IO2_PROTOCOL *This,
+ IN OUT EFI_DISK_IO2_TOKEN *Token
+ )
+{
+ EFI_STATUS Status;
+ DISK_IO2_FLUSH_TASK *Task;
+ DISK_IO_PRIVATE_DATA *Private;
+
+ Private = DISK_IO_PRIVATE_DATA_FROM_DISK_IO2 (This);
+
+ if ((Token != NULL) && (Token->Event != NULL)) {
+ Task = AllocatePool (sizeof (DISK_IO2_FLUSH_TASK));
+ if (Task == NULL) {
+ return EFI_OUT_OF_RESOURCES;
+ }
+
+ Status = gBS->CreateEvent (
+ EVT_NOTIFY_SIGNAL,
+ TPL_CALLBACK,
+ DiskIo2OnFlushComplete,
+ Task,
+ &Task->BlockIo2Token.Event
+ );
+ if (EFI_ERROR (Status)) {
+ FreePool (Task);
+ return Status;
+ }
+ Task->Signature = DISK_IO2_FLUSH_TASK_SIGNATURE;
+ Status = Private->BlockIo2->FlushBlocksEx (Private->BlockIo2, &Task->BlockIo2Token);
+ if (EFI_ERROR (Status)) {
+ gBS->CloseEvent (Task->BlockIo2Token.Event);
+ FreePool (Task);
+ }
+ } else {
+ Status = Private->BlockIo2->FlushBlocksEx (Private->BlockIo2, NULL);
}
return Status;
}
+/**
+ 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.
+
+ @param This Protocol instance pointer.
+ @param MediaId Id of the media, changes every time the media is replaced.
+ @param Offset The starting byte offset to read from
+ @param BufferSize Size of Buffer
+ @param Buffer Buffer containing read data
+
+ @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_CHNAGED The MediaId does not matched the current device.
+ @retval EFI_INVALID_PARAMETER The read request contains device addresses that are not
+ valid for the device.
+
+**/
+EFI_STATUS
+EFIAPI
+DiskIoReadDisk (
+ IN EFI_DISK_IO_PROTOCOL *This,
+ IN UINT32 MediaId,
+ IN UINT64 Offset,
+ IN UINTN BufferSize,
+ OUT VOID *Buffer
+ )
+{
+ return DiskIo2ReadWriteDisk (
+ DISK_IO_PRIVATE_DATA_FROM_DISK_IO (This),
+ FALSE, MediaId, Offset, NULL, BufferSize, (UINT8 *) Buffer
+ );
+}
+
+
+/**
+ Writes BufferSize bytes from Buffer into Offset.
+ 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.
+
+ @param This Protocol instance pointer.
+ @param MediaId Id of the media, changes every time the media is replaced.
+ @param Offset The starting byte offset to read from
+ @param BufferSize Size of Buffer
+ @param Buffer Buffer containing read 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_INVALID_PARAMETER The write request contains device addresses that are not
+ valid for the device.
+
+**/
+EFI_STATUS
+EFIAPI
+DiskIoWriteDisk (
+ IN EFI_DISK_IO_PROTOCOL *This,
+ IN UINT32 MediaId,
+ IN UINT64 Offset,
+ IN UINTN BufferSize,
+ IN VOID *Buffer
+ )
+{
+ return DiskIo2ReadWriteDisk (
+ DISK_IO_PRIVATE_DATA_FROM_DISK_IO (This),
+ TRUE, MediaId, Offset, NULL, BufferSize, (UINT8 *) Buffer
+ );
+}
/**
The user Entry Point for module DiskIo. The user code starts with this function.
@@ -736,7 +1253,5 @@ InitializeDiskIo (
);
ASSERT_EFI_ERROR (Status);
-
return Status;
}
-