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EmbeddedPkg/MmcDxe: expand to support multiple blocks 

Make use of DMA to transfer multiple blocks at one time. It could
improve the performance on MMC/SD driver.

Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Haojian Zhuang <haojian.zhuang@linaro.org>
Tested-by: Ryan Harkin <ryan.harkin@linaro.org>
Reviewed-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
This commit is contained in:
Haojian Zhuang 2016-11-23 21:36:24 +08:00 committed by Ard Biesheuvel
parent e06253ba80
commit 339c6e905a
2 changed files with 121 additions and 59 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

4
EmbeddedPkg/Universal/MmcDxe/Mmc.h
View File

@ -34,6 +34,10 @@
#define MMC_OCR_POWERUP 0x80000000
#define MMC_OCR_ACCESS_MASK 0x3 /* bit[30-29] */
#define MMC_OCR_ACCESS_BYTE 0x1 /* bit[29] */
#define MMC_OCR_ACCESS_SECTOR 0x2 /* bit[30] */
#define MMC_CSD_GET_CCC(Response) (Response[2] >> 20)
#define MMC_CSD_GET_TRANSPEED(Response) (Response[3] & 0xFF)
#define MMC_CSD_GET_READBLLEN(Response) ((Response[2] >> 16) & 0xF)

176
EmbeddedPkg/Universal/MmcDxe/MmcBlockIo.c
View File

@ -126,6 +126,96 @@ MmcStopTransmission (
#define MMCI0_BLOCKLEN 512
#define MMCI0_TIMEOUT 10000
STATIC
EFI_STATUS
MmcTransferBlock (
IN EFI_BLOCK_IO_PROTOCOL *This,
IN UINTN Cmd,
IN UINTN Transfer,
IN UINT32 MediaId,
IN EFI_LBA Lba,
IN UINTN BufferSize,
OUT VOID *Buffer
)
{
EFI_STATUS Status;
UINTN CmdArg;
INTN Timeout;
UINT32 Response[4];
MMC_HOST_INSTANCE *MmcHostInstance;
EFI_MMC_HOST_PROTOCOL *MmcHost;
MmcHostInstance = MMC_HOST_INSTANCE_FROM_BLOCK_IO_THIS (This);
MmcHost = MmcHostInstance->MmcHost;
//Set command argument based on the card access mode (Byte mode or Block mode)
if ((MmcHostInstance->CardInfo.OCRData.AccessMode & MMC_OCR_ACCESS_MASK) ==
MMC_OCR_ACCESS_SECTOR) {
CmdArg = Lba;
} else {
CmdArg = Lba * This->Media->BlockSize;
}
Status = MmcHost->SendCommand (MmcHost, Cmd, CmdArg);
if (EFI_ERROR (Status)) {
DEBUG ((EFI_D_ERROR, "%a(MMC_CMD%d): Error %r\n", __func__, Cmd, Status));
return Status;
}
if (Transfer == MMC_IOBLOCKS_READ) {
// Read Data
Status = MmcHost->ReadBlockData (MmcHost, Lba, BufferSize, Buffer);
if (EFI_ERROR (Status)) {
DEBUG ((EFI_D_BLKIO, "%a(): Error Read Block Data and Status = %r\n", __func__, Status));
MmcStopTransmission (MmcHost);
return Status;
}
Status = MmcNotifyState (MmcHostInstance, MmcProgrammingState);
if (EFI_ERROR (Status)) {
DEBUG ((EFI_D_ERROR, "%a() : Error MmcProgrammingState\n", __func__));
return Status;
}
} else {
// Write Data
Status = MmcHost->WriteBlockData (MmcHost, Lba, BufferSize, Buffer);
if (EFI_ERROR (Status)) {
DEBUG ((EFI_D_BLKIO, "%a(): Error Write Block Data and Status = %r\n", __func__, Status));
MmcStopTransmission (MmcHost);
return Status;
}
}
// Command 13 - Read status and wait for programming to complete (return to tran)
Timeout = MMCI0_TIMEOUT;
CmdArg = MmcHostInstance->CardInfo.RCA << 16;
Response[0] = 0;
while(!(Response[0] & MMC_R0_READY_FOR_DATA)
&& (MMC_R0_CURRENTSTATE (Response) != MMC_R0_STATE_TRAN)
&& Timeout--) {
Status = MmcHost->SendCommand (MmcHost, MMC_CMD13, CmdArg);
if (!EFI_ERROR (Status)) {
MmcHost->ReceiveResponse (MmcHost, MMC_RESPONSE_TYPE_R1, Response);
if (Response[0] & MMC_R0_READY_FOR_DATA) {
break; // Prevents delay once finished
}
}
}
if (BufferSize > This->Media->BlockSize) {
Status = MmcHost->SendCommand (MmcHost, MMC_CMD12, 0);
if (EFI_ERROR (Status)) {
DEBUG ((EFI_D_BLKIO, "%a(): Error and Status:%r\n", __func__, Status));
}
}
Status = MmcNotifyState (MmcHostInstance, MmcTransferState);
if (EFI_ERROR (Status)) {
DEBUG ((EFI_D_ERROR, "MmcIoBlocks() : Error MmcTransferState\n"));
return Status;
}
return Status;
}
EFI_STATUS
MmcIoBlocks (
IN EFI_BLOCK_IO_PROTOCOL *This,
@ -145,6 +235,7 @@ MmcIoBlocks (
EFI_MMC_HOST_PROTOCOL *MmcHost;
UINTN BytesRemainingToBeTransfered;
UINTN BlockCount;
UINTN ConsumeSize;
BlockCount = 1;
MmcHostInstance = MMC_HOST_INSTANCE_FROM_BLOCK_IO_THIS (This);
@ -165,6 +256,10 @@ MmcIoBlocks (
return EFI_NO_MEDIA;
}
if (MMC_HOST_HAS_ISMULTIBLOCK(MmcHost) && MmcHost->IsMultiBlock(MmcHost)) {
BlockCount = (BufferSize + This->Media->BlockSize - 1) / This->Media->BlockSize;
}
// All blocks must be within the device
if ((Lba + (BufferSize / This->Media->BlockSize)) > (This->Media->LastBlock + 1)) {
return EFI_INVALID_PARAMETER;
@ -210,75 +305,38 @@ MmcIoBlocks (
return EFI_NOT_READY;
}
//Set command argument based on the card access mode (Byte mode or Block mode)
if (MmcHostInstance->CardInfo.OCRData.AccessMode & BIT1) {
CmdArg = Lba;
} else {
CmdArg = Lba * This->Media->BlockSize;
}
if (Transfer == MMC_IOBLOCKS_READ) {
// Read a single block
Cmd = MMC_CMD17;
} else {
// Write a single block
Cmd = MMC_CMD24;
}
Status = MmcHost->SendCommand (MmcHost, Cmd, CmdArg);
if (EFI_ERROR (Status)) {
DEBUG ((EFI_D_ERROR, "MmcIoBlocks(MMC_CMD%d): Error %r\n", Cmd, Status));
return Status;
}
if (Transfer == MMC_IOBLOCKS_READ) {
// Read one block of Data
Status = MmcHost->ReadBlockData (MmcHost, Lba, This->Media->BlockSize, Buffer);
if (EFI_ERROR (Status)) {
DEBUG ((EFI_D_BLKIO, "MmcIoBlocks(): Error Read Block Data and Status = %r\n", Status));
MmcStopTransmission (MmcHost);
return Status;
}
Status = MmcNotifyState (MmcHostInstance, MmcProgrammingState);
if (EFI_ERROR (Status)) {
DEBUG ((EFI_D_ERROR, "MmcIoBlocks() : Error MmcProgrammingState\n"));
return Status;
if (BlockCount == 1) {
// Read a single block
Cmd = MMC_CMD17;
} else {
// Read multiple blocks
Cmd = MMC_CMD18;
}
} else {
// Write one block of Data
Status = MmcHost->WriteBlockData (MmcHost, Lba, This->Media->BlockSize, Buffer);
if (EFI_ERROR (Status)) {
DEBUG ((EFI_D_BLKIO, "MmcIoBlocks(): Error Write Block Data and Status = %r\n", Status));
MmcStopTransmission (MmcHost);
return Status;
if (BlockCount == 1) {
// Write a single block
Cmd = MMC_CMD24;
} else {
// Write multiple blocks
Cmd = MMC_CMD25;
}
}
// Command 13 - Read status and wait for programming to complete (return to tran)
Timeout = MMCI0_TIMEOUT;
CmdArg = MmcHostInstance->CardInfo.RCA << 16;
Response[0] = 0;
while( (!(Response[0] & MMC_R0_READY_FOR_DATA))
&& (MMC_R0_CURRENTSTATE (Response) != MMC_R0_STATE_TRAN)
&& Timeout--) {
Status = MmcHost->SendCommand (MmcHost, MMC_CMD13, CmdArg);
if (!EFI_ERROR (Status)) {
MmcHost->ReceiveResponse (MmcHost, MMC_RESPONSE_TYPE_R1, Response);
if ((Response[0] & MMC_R0_READY_FOR_DATA)) {
break; // Prevents delay once finished
}
}
gBS->Stall (1);
ConsumeSize = BlockCount * This->Media->BlockSize;
if (BytesRemainingToBeTransfered < ConsumeSize) {
ConsumeSize = BytesRemainingToBeTransfered;
}
Status = MmcNotifyState (MmcHostInstance, MmcTransferState);
Status = MmcTransferBlock (This, Cmd, Transfer, MediaId, Lba, ConsumeSize, Buffer);
if (EFI_ERROR (Status)) {
DEBUG ((EFI_D_ERROR, "MmcIoBlocks() : Error MmcTransferState\n"));
return Status;
DEBUG ((EFI_D_ERROR, "%a(): Failed to transfer block and Status:%r\n", __func__, Status));
}
BytesRemainingToBeTransfered -= This->Media->BlockSize;
Lba += BlockCount;
Buffer = (UINT8 *)Buffer + This->Media->BlockSize;
BytesRemainingToBeTransfered -= ConsumeSize;
if (BytesRemainingToBeTransfered > 0) {
Lba += BlockCount;
Buffer = (UINT8 *)Buffer + ConsumeSize;
}
}
return EFI_SUCCESS;