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Simplified Host mode Mass Storage Class driver to reduce compiled program size.

This commit is contained in:
Dean Camera 2009-08-27 08:17:06 +00:00
parent 754ea083d4
commit f52b265090
2 changed files with 48 additions and 103 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

148
LUFA/Drivers/USB/Class/Host/MassStorage.c
View File

@ -129,11 +129,14 @@ void MS_Host_USBTask(USB_ClassInfo_MS_Host_t* MSInterfaceInfo)
}
static uint8_t MS_Host_SendCommand(USB_ClassInfo_MS_Host_t* MSInterfaceInfo, MS_CommandBlockWrapper_t* SCSICommandBlock)
static uint8_t MS_Host_SendCommand(USB_ClassInfo_MS_Host_t* MSInterfaceInfo, MS_CommandBlockWrapper_t* SCSICommandBlock,
void* BufferPtr)
{
uint8_t ErrorCode = PIPE_RWSTREAM_NoError;
if (++MSInterfaceInfo->State.TransactionTag == 0xFFFFFFFF)
SCSICommandBlock->Tag = MSInterfaceInfo->State.TransactionTag++;
if (MSInterfaceInfo->State.TransactionTag == 0xFFFFFFFF)
MSInterfaceInfo->State.TransactionTag = 1;
Pipe_SelectPipe(MSInterfaceInfo->Config.DataOUTPipeNumber);
@ -143,11 +146,18 @@ static uint8_t MS_Host_SendCommand(USB_ClassInfo_MS_Host_t* MSInterfaceInfo, MS_
return ErrorCode;
Pipe_ClearOUT();
while(!(Pipe_IsOUTReady()));
Pipe_WaitUntilReady();
Pipe_Freeze();
if ((BufferPtr != NULL) &&
((ErrorCode = MS_Host_SendReceiveData(MSInterfaceInfo, SCSICommandBlock, BufferPtr)) != PIPE_RWSTREAM_NoError))
{
Pipe_Freeze();
return ErrorCode;
}
return PIPE_RWSTREAM_NoError;
return ErrorCode;
}
static uint8_t MS_Host_WaitForDataReceived(USB_ClassInfo_MS_Host_t* MSInterfaceInfo)
@ -204,13 +214,19 @@ static uint8_t MS_Host_WaitForDataReceived(USB_ClassInfo_MS_Host_t* MSInterfaceI
}
static uint8_t MS_Host_SendReceiveData(USB_ClassInfo_MS_Host_t* MSInterfaceInfo,
MS_CommandBlockWrapper_t* SCSICommandBlock, void* BufferPtr)
MS_CommandBlockWrapper_t* SCSICommandBlock, void* BufferPtr)
{
uint8_t ErrorCode = PIPE_RWSTREAM_NoError;
uint16_t BytesRem = SCSICommandBlock->DataTransferLength;
if (SCSICommandBlock->Flags & COMMAND_DIRECTION_DATA_IN)
{
if ((ErrorCode = MS_Host_WaitForDataReceived(MSInterfaceInfo)) != PIPE_RWSTREAM_NoError)
{
Pipe_Freeze();
return ErrorCode;
}
Pipe_SelectPipe(MSInterfaceInfo->Config.DataINPipeNumber);
Pipe_Unfreeze();
@ -238,7 +254,7 @@ static uint8_t MS_Host_SendReceiveData(USB_ClassInfo_MS_Host_t* MSInterfaceInfo,
Pipe_Freeze();
return PIPE_RWSTREAM_NoError;
return ErrorCode;
}
static uint8_t MS_Host_GetReturnedStatus(USB_ClassInfo_MS_Host_t* MSInterfaceInfo,
@ -258,7 +274,10 @@ static uint8_t MS_Host_GetReturnedStatus(USB_ClassInfo_MS_Host_t* MSInterfaceInf
Pipe_ClearIN();
Pipe_Freeze();
return PIPE_RWSTREAM_NoError;
if (SCSICommandStatus->Status != SCSI_Command_Pass)
ErrorCode = MS_ERROR_LOGICAL_CMD_FAILED;
return ErrorCode;
}
uint8_t MS_Host_ResetMSInterface(USB_ClassInfo_MS_Host_t* MSInterfaceInfo)
@ -318,7 +337,6 @@ uint8_t MS_Host_GetInquiryData(USB_ClassInfo_MS_Host_t* MSInterfaceInfo, uint8_t
MS_CommandBlockWrapper_t SCSICommandBlock = (MS_CommandBlockWrapper_t)
{
.Signature = CBW_SIGNATURE,
.Tag = MSInterfaceInfo->State.TransactionTag,
.DataTransferLength = sizeof(SCSI_Inquiry_Response_t),
.Flags = COMMAND_DIRECTION_DATA_IN,
.LUN = LUNIndex,
@ -334,33 +352,19 @@ uint8_t MS_Host_GetInquiryData(USB_ClassInfo_MS_Host_t* MSInterfaceInfo, uint8_t
}
};
if ((ErrorCode = MS_Host_SendCommand(MSInterfaceInfo, &SCSICommandBlock)) != PIPE_RWSTREAM_NoError)
MS_CommandStatusWrapper_t SCSICommandStatus;
if ((ErrorCode = MS_Host_SendCommand(MSInterfaceInfo, &SCSICommandBlock, InquiryData)) != PIPE_RWSTREAM_NoError)
{
Pipe_Freeze();
return ErrorCode;
}
if ((ErrorCode = MS_Host_WaitForDataReceived(MSInterfaceInfo)) != PIPE_RWSTREAM_NoError)
{
Pipe_Freeze();
return ErrorCode;
}
if ((ErrorCode = MS_Host_SendReceiveData(MSInterfaceInfo, &SCSICommandBlock, InquiryData)) != PIPE_RWSTREAM_NoError)
{
Pipe_Freeze();
return ErrorCode;
}
MS_CommandStatusWrapper_t SCSICommandStatus;
if ((ErrorCode = MS_Host_GetReturnedStatus(MSInterfaceInfo, &SCSICommandStatus)) != PIPE_RWSTREAM_NoError)
{
Pipe_Freeze();
return ErrorCode;
}
if (SCSICommandStatus.Status != SCSI_Command_Pass)
ErrorCode = MS_ERROR_LOGICAL_CMD_FAILED;
return ErrorCode;
}
@ -375,7 +379,6 @@ uint8_t MS_Host_TestUnitReady(USB_ClassInfo_MS_Host_t* MSInterfaceInfo, uint8_t
MS_CommandBlockWrapper_t SCSICommandBlock = (MS_CommandBlockWrapper_t)
{
.Signature = CBW_SIGNATURE,
.Tag = MSInterfaceInfo->State.TransactionTag,
.DataTransferLength = 0,
.Flags = COMMAND_DIRECTION_DATA_IN,
.LUN = LUNIndex,
@ -391,21 +394,19 @@ uint8_t MS_Host_TestUnitReady(USB_ClassInfo_MS_Host_t* MSInterfaceInfo, uint8_t
}
};
if ((ErrorCode = MS_Host_SendCommand(MSInterfaceInfo, &SCSICommandBlock)) != PIPE_RWSTREAM_NoError)
MS_CommandStatusWrapper_t SCSICommandStatus;
if ((ErrorCode = MS_Host_SendCommand(MSInterfaceInfo, &SCSICommandBlock, NULL)) != PIPE_RWSTREAM_NoError)
{
Pipe_Freeze();
return ErrorCode;
}
MS_CommandStatusWrapper_t SCSICommandStatus;
if ((ErrorCode = MS_Host_GetReturnedStatus(MSInterfaceInfo, &SCSICommandStatus)) != PIPE_RWSTREAM_NoError)
{
Pipe_Freeze();
return ErrorCode;
}
if (SCSICommandStatus.Status != SCSI_Command_Pass)
ErrorCode = MS_ERROR_LOGICAL_CMD_FAILED;
return ErrorCode;
}
@ -421,7 +422,6 @@ uint8_t MS_Host_ReadDeviceCapacity(USB_ClassInfo_MS_Host_t* MSInterfaceInfo, uin
MS_CommandBlockWrapper_t SCSICommandBlock = (MS_CommandBlockWrapper_t)
{
.Signature = CBW_SIGNATURE,
.Tag = MSInterfaceInfo->State.TransactionTag,
.DataTransferLength = sizeof(SCSI_Capacity_t),
.Flags = COMMAND_DIRECTION_DATA_IN,
.LUN = LUNIndex,
@ -441,36 +441,22 @@ uint8_t MS_Host_ReadDeviceCapacity(USB_ClassInfo_MS_Host_t* MSInterfaceInfo, uin
}
};
if ((ErrorCode = MS_Host_SendCommand(MSInterfaceInfo, &SCSICommandBlock)) != PIPE_RWSTREAM_NoError)
MS_CommandStatusWrapper_t SCSICommandStatus;
if ((ErrorCode = MS_Host_SendCommand(MSInterfaceInfo, &SCSICommandBlock, DeviceCapacity)) != PIPE_RWSTREAM_NoError)
{
Pipe_Freeze();
return ErrorCode;
}
if ((ErrorCode = MS_Host_WaitForDataReceived(MSInterfaceInfo)) != PIPE_RWSTREAM_NoError)
{
Pipe_Freeze();
return ErrorCode;
}
if ((ErrorCode = MS_Host_SendReceiveData(MSInterfaceInfo, &SCSICommandBlock, DeviceCapacity)) != PIPE_RWSTREAM_NoError)
{
Pipe_Freeze();
return ErrorCode;
}
DeviceCapacity->Blocks = SwapEndian_32(DeviceCapacity->Blocks);
DeviceCapacity->BlockSize = SwapEndian_32(DeviceCapacity->BlockSize);
MS_CommandStatusWrapper_t SCSICommandStatus;
if ((ErrorCode = MS_Host_GetReturnedStatus(MSInterfaceInfo, &SCSICommandStatus)) != PIPE_RWSTREAM_NoError)
{
Pipe_Freeze();
return ErrorCode;
}
if (SCSICommandStatus.Status != SCSI_Command_Pass)
ErrorCode = MS_ERROR_LOGICAL_CMD_FAILED;
return ErrorCode;
}
@ -486,7 +472,6 @@ uint8_t MS_Host_RequestSense(USB_ClassInfo_MS_Host_t* MSInterfaceInfo, uint8_t L
MS_CommandBlockWrapper_t SCSICommandBlock = (MS_CommandBlockWrapper_t)
{
.Signature = CBW_SIGNATURE,
.Tag = MSInterfaceInfo->State.TransactionTag,
.DataTransferLength = sizeof(SCSI_Request_Sense_Response_t),
.Flags = COMMAND_DIRECTION_DATA_IN,
.LUN = LUNIndex,
@ -502,33 +487,19 @@ uint8_t MS_Host_RequestSense(USB_ClassInfo_MS_Host_t* MSInterfaceInfo, uint8_t L
}
};
if ((ErrorCode = MS_Host_SendCommand(MSInterfaceInfo, &SCSICommandBlock)) != PIPE_RWSTREAM_NoError)
{
Pipe_Freeze();
return ErrorCode;
}
if ((ErrorCode = MS_Host_WaitForDataReceived(MSInterfaceInfo)) != PIPE_RWSTREAM_NoError)
MS_CommandStatusWrapper_t SCSICommandStatus;
if ((ErrorCode = MS_Host_SendCommand(MSInterfaceInfo, &SCSICommandBlock, SenseData)) != PIPE_RWSTREAM_NoError)
{
Pipe_Freeze();
return ErrorCode;
}
if ((ErrorCode = MS_Host_SendReceiveData(MSInterfaceInfo, &SCSICommandBlock, SenseData)) != PIPE_RWSTREAM_NoError)
{
Pipe_Freeze();
return ErrorCode;
}
MS_CommandStatusWrapper_t SCSICommandStatus;
if ((ErrorCode = MS_Host_GetReturnedStatus(MSInterfaceInfo, &SCSICommandStatus)) != PIPE_RWSTREAM_NoError)
{
Pipe_Freeze();
return ErrorCode;
}
if (SCSICommandStatus.Status != SCSI_Command_Pass)
ErrorCode = MS_ERROR_LOGICAL_CMD_FAILED;
return ErrorCode;
}
@ -543,7 +514,6 @@ uint8_t MS_Host_PreventAllowMediumRemoval(USB_ClassInfo_MS_Host_t* MSInterfaceIn
MS_CommandBlockWrapper_t SCSICommandBlock = (MS_CommandBlockWrapper_t)
{
.Signature = CBW_SIGNATURE,
.Tag = MSInterfaceInfo->State.TransactionTag,
.DataTransferLength = 0,
.Flags = COMMAND_DIRECTION_DATA_OUT,
.LUN = LUNIndex,
@ -559,21 +529,19 @@ uint8_t MS_Host_PreventAllowMediumRemoval(USB_ClassInfo_MS_Host_t* MSInterfaceIn
}
};
if ((ErrorCode = MS_Host_SendCommand(MSInterfaceInfo, &SCSICommandBlock)) != PIPE_RWSTREAM_NoError)
MS_CommandStatusWrapper_t SCSICommandStatus;
if ((ErrorCode = MS_Host_SendCommand(MSInterfaceInfo, &SCSICommandBlock, NULL)) != PIPE_RWSTREAM_NoError)
{
Pipe_Freeze();
return ErrorCode;
}
MS_CommandStatusWrapper_t SCSICommandStatus;
if ((ErrorCode = MS_Host_GetReturnedStatus(MSInterfaceInfo, &SCSICommandStatus)) != PIPE_RWSTREAM_NoError)
{
Pipe_Freeze();
return ErrorCode;
}
if (SCSICommandStatus.Status != SCSI_Command_Pass)
ErrorCode = MS_ERROR_LOGICAL_CMD_FAILED;
return ErrorCode;
}
@ -589,7 +557,6 @@ uint8_t MS_Host_ReadDeviceBlocks(USB_ClassInfo_MS_Host_t* MSInterfaceInfo, uint8
MS_CommandBlockWrapper_t SCSICommandBlock = (MS_CommandBlockWrapper_t)
{
.Signature = CBW_SIGNATURE,
.Tag = MSInterfaceInfo->State.TransactionTag,
.DataTransferLength = ((uint32_t)Blocks * BlockSize),
.Flags = COMMAND_DIRECTION_DATA_IN,
.LUN = LUNIndex,
@ -609,33 +576,19 @@ uint8_t MS_Host_ReadDeviceBlocks(USB_ClassInfo_MS_Host_t* MSInterfaceInfo, uint8
}
};
if ((ErrorCode = MS_Host_SendCommand(MSInterfaceInfo, &SCSICommandBlock)) != PIPE_RWSTREAM_NoError)
{
Pipe_Freeze();
return ErrorCode;
}
if ((ErrorCode = MS_Host_WaitForDataReceived(MSInterfaceInfo)) != PIPE_RWSTREAM_NoError)
MS_CommandStatusWrapper_t SCSICommandStatus;
if ((ErrorCode = MS_Host_SendCommand(MSInterfaceInfo, &SCSICommandBlock, BlockBuffer)) != PIPE_RWSTREAM_NoError)
{
Pipe_Freeze();
return ErrorCode;
}
if ((ErrorCode = MS_Host_SendReceiveData(MSInterfaceInfo, &SCSICommandBlock, BlockBuffer)) != PIPE_RWSTREAM_NoError)
{
Pipe_Freeze();
return ErrorCode;
}
MS_CommandStatusWrapper_t SCSICommandStatus;
if ((ErrorCode = MS_Host_GetReturnedStatus(MSInterfaceInfo, &SCSICommandStatus)) != PIPE_RWSTREAM_NoError)
{
Pipe_Freeze();
return ErrorCode;
}
if (SCSICommandStatus.Status != SCSI_Command_Pass)
ErrorCode = MS_ERROR_LOGICAL_CMD_FAILED;
return ErrorCode;
}
@ -651,7 +604,6 @@ uint8_t MS_Host_WriteDeviceBlocks(USB_ClassInfo_MS_Host_t* MSInterfaceInfo, uint
MS_CommandBlockWrapper_t SCSICommandBlock = (MS_CommandBlockWrapper_t)
{
.Signature = CBW_SIGNATURE,
.Tag = MSInterfaceInfo->State.TransactionTag,
.DataTransferLength = ((uint32_t)Blocks * BlockSize),
.Flags = COMMAND_DIRECTION_DATA_OUT,
.LUN = LUNIndex,
@ -671,27 +623,19 @@ uint8_t MS_Host_WriteDeviceBlocks(USB_ClassInfo_MS_Host_t* MSInterfaceInfo, uint
}
};
if ((ErrorCode = MS_Host_SendCommand(MSInterfaceInfo, &SCSICommandBlock)) != PIPE_RWSTREAM_NoError)
{
Pipe_Freeze();
return ErrorCode;
}
MS_CommandStatusWrapper_t SCSICommandStatus;
if ((ErrorCode = MS_Host_SendReceiveData(MSInterfaceInfo, &SCSICommandBlock, BlockBuffer)) != PIPE_RWSTREAM_NoError)
if ((ErrorCode = MS_Host_SendCommand(MSInterfaceInfo, &SCSICommandBlock, BlockBuffer)) != PIPE_RWSTREAM_NoError)
{
Pipe_Freeze();
return ErrorCode;
}
MS_CommandStatusWrapper_t SCSICommandStatus;
if ((ErrorCode = MS_Host_GetReturnedStatus(MSInterfaceInfo, &SCSICommandStatus)) != PIPE_RWSTREAM_NoError)
{
Pipe_Freeze();
return ErrorCode;
}
if (SCSICommandStatus.Status != SCSI_Command_Pass)
ErrorCode = MS_ERROR_LOGICAL_CMD_FAILED;
return ErrorCode;
}

3
LUFA/Drivers/USB/Class/Host/MassStorage.h
View File

@ -326,7 +326,8 @@
static uint8_t DComp_NextInterfaceBulkDataEndpoint(void* CurrentDescriptor);
static uint8_t MS_Host_SendCommand(USB_ClassInfo_MS_Host_t* MSInterfaceInfo,
MS_CommandBlockWrapper_t* SCSICommandBlock);
MS_CommandBlockWrapper_t* SCSICommandBlock,
void* BufferPtr);
static uint8_t MS_Host_WaitForDataReceived(USB_ClassInfo_MS_Host_t* MSInterfaceInfo);
static uint8_t MS_Host_SendReceiveData(USB_ClassInfo_MS_Host_t* MSInterfaceInfo,
MS_CommandBlockWrapper_t* SCSICommandBlock, void* BufferPtr);