Skip to content

GitLab

Commit f52b2650 authored by Dean Camera's avatar Dean Camera
Browse files

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

parent 754ea083
Hide whitespace changes
Inline Side-by-side
LUFA/Drivers/USB/Class/Host/MassStorage.c
View file @ f52b2650
......@@ -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)
{
Pipe_Freeze();
return ErrorCode;
}
MS_CommandStatusWrapper_t SCSICommandStatus;
if ((ErrorCode = MS_Host_WaitForDataReceived(MSInterfaceInfo)) != PIPE_RWSTREAM_NoError)
if ((ErrorCode = MS_Host_SendCommand(MSInterfaceInfo, &SCSICommandBlock, DeviceCapacity)) != 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)
{
Pipe_Freeze();
return ErrorCode;
}
MS_CommandStatusWrapper_t SCSICommandStatus;
if ((ErrorCode = MS_Host_SendReceiveData(MSInterfaceInfo, &SCSICommandBlock, SenseData)) != PIPE_RWSTREAM_NoError)
if ((ErrorCode = MS_Host_SendCommand(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)
{
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;
}
......@@ -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;
}
......
LUFA/Drivers/USB/Class/Host/MassStorage.h
View file @ f52b2650
......@@ -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);
......
Markdown is supported
0% or .
You are about to add 0 people to the discussion. Proceed with caution.
Finish editing this message first!
Please register or to comment