diff options
author | Dean Camera <dean@fourwalledcubicle.com> | 2009-08-27 08:17:06 +0000 |
---|---|---|
committer | Dean Camera <dean@fourwalledcubicle.com> | 2009-08-27 08:17:06 +0000 |
commit | f52b265090db54c580be9fd5307b4d5368972f51 (patch) | |
tree | bcd92eb306f9d83a8a7ff58072baa87317e2af9b /LUFA/Drivers/USB/Class/Host | |
parent | 754ea083d4c828318ffc621e00d2053acb842e20 (diff) | |
download | lufa-f52b265090db54c580be9fd5307b4d5368972f51.tar.gz lufa-f52b265090db54c580be9fd5307b4d5368972f51.tar.bz2 lufa-f52b265090db54c580be9fd5307b4d5368972f51.zip |
Simplified Host mode Mass Storage Class driver to reduce compiled program size.
Diffstat (limited to 'LUFA/Drivers/USB/Class/Host')
-rw-r--r-- | LUFA/Drivers/USB/Class/Host/MassStorage.c | 146 | ||||
-rw-r--r-- | LUFA/Drivers/USB/Class/Host/MassStorage.h | 3 |
2 files changed, 47 insertions, 102 deletions
diff --git a/LUFA/Drivers/USB/Class/Host/MassStorage.c b/LUFA/Drivers/USB/Class/Host/MassStorage.c index 3db4aafef..1f66aa863 100644 --- a/LUFA/Drivers/USB/Class/Host/MassStorage.c +++ b/LUFA/Drivers/USB/Class/Host/MassStorage.c @@ -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;
}
diff --git a/LUFA/Drivers/USB/Class/Host/MassStorage.h b/LUFA/Drivers/USB/Class/Host/MassStorage.h index f347b1993..30969c412 100644 --- a/LUFA/Drivers/USB/Class/Host/MassStorage.h +++ b/LUFA/Drivers/USB/Class/Host/MassStorage.h @@ -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);
|