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Condensed SCSI command functions in the LowLevel Mass Storage Host demo, to save on FLASH space.

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Fixed issue in AVRISP project where the target RESET line was being toggled before it was tristated, causing problems synchronising to some targets (thanks to Mike Alex).
pull/1469/head
Dean Camera 16 years ago
parent 023838fe4a
commit 922e60192d
8 changed files with 249 additions and 281 deletions
Show Stats Download Patch File Download Diff File

4
Demos/Host/ClassDriver/MassStorageHost/MassStorageHost.c
Unescape View File

@ -84,7 +84,7 @@ int main(void)
if (MS_Host_ConfigurePipes(&FlashDisk_MS_Interface,
ConfigDescriptorSize, ConfigDescriptorData) != MS_ENUMERROR_NoError)
{
printf("Attached Device Not a Valid Mouse.\r\n");
printf("Attached Device Not a Valid Mass Storage Device.\r\n");
LEDs_SetAllLEDs(LEDMASK_USB_ERROR);
USB_HostState = HOST_STATE_WaitForDeviceRemoval;
break;
@ -113,6 +113,8 @@ int main(void)
break;
}
printf("Total LUNs: %d - Using first LUN in device.\r\n", (MaxLUNIndex + 1));
if (MS_Host_ResetMSInterface(&FlashDisk_MS_Interface))
{
printf("Error resetting Mass Storage interface.\r\n");

383
Demos/Host/LowLevel/MassStorageHost/Lib/MassStoreCommands.c
Unescape View File

@ -51,32 +51,28 @@
#include "MassStoreCommands.h"
/* Globals: */
/** Current CBW to send to the device. This is automatically filled by the routines
* in this file and is not externally accessible.
*/
static CommandBlockWrapper_t SCSICommandBlock;
/** Current CSW received from the device. This is automatically filled by the routines
* in this file and is externally accessible so that the return codes may be checked.
*/
CommandStatusWrapper_t SCSICommandStatus;
/** Current Tag value used in issued CBWs to the device. This is automatically incremented
* by the routines in this file, and is not externally accessible.
* each time a command is sent, and is not externally accessible.
*/
static uint32_t MassStore_Tag = 1;
static uint32_t MassStore_Tag = 1;
/** Routine to send the current CBW to the device, and increment the Tag value as needed.
*
* \param[in] SCSICommandBlock Pointer to a SCSI command block structure to send to the attached device
* \param[in,out] BufferPtr Pointer to a buffer for the data to send or receive to/from the device, or NULL if no data
*
* \return A value from the Pipe_Stream_RW_ErrorCodes_t enum
*/
static uint8_t MassStore_SendCommand(void)
static uint8_t MassStore_SendCommand(CommandBlockWrapper_t* SCSICommandBlock, void* BufferPtr)
{
uint8_t ErrorCode = PIPE_RWSTREAM_NoError;
/* Each transmission should have a unique tag value, excluding values 0 and 0xFFFFFFFF */
if (++MassStore_Tag == 0xFFFFFFFF)
/* Each transmission should have a unique tag value, increment before use */
SCSICommandBlock->Tag = ++MassStore_Tag;
/* Wrap Tag value when invalid - MS class defines tag values of 0 and 0xFFFFFFFF to be invalid */
if (MassStore_Tag == 0xFFFFFFFF)
MassStore_Tag = 1;
/* Select the OUT data pipe for CBW transmission */
@ -84,19 +80,27 @@ static uint8_t MassStore_SendCommand(void)
Pipe_Unfreeze();
/* Write the CBW command to the OUT pipe */
if ((ErrorCode = Pipe_Write_Stream_LE(&SCSICommandBlock, sizeof(CommandBlockWrapper_t))) != PIPE_RWSTREAM_NoError)
if ((ErrorCode = Pipe_Write_Stream_LE(SCSICommandBlock, sizeof(CommandBlockWrapper_t))) != PIPE_RWSTREAM_NoError)
return ErrorCode;
/* Send the data in the OUT pipe to the attached device */
Pipe_ClearOUT();
/* Wait until command has been sent */
while(!(Pipe_IsOUTReady()));
Pipe_WaitUntilReady();
/* Freeze pipe after use */
Pipe_Freeze();
return PIPE_RWSTREAM_NoError;
/* Send data if any */
if ((BufferPtr != NULL) &&
((ErrorCode = MassStore_SendReceiveData(SCSICommandBlock, BufferPtr)) != PIPE_READYWAIT_NoError))
{
Pipe_Freeze();
return ErrorCode;
}
return ErrorCode;
}
/** Waits until the attached device is ready to accept data following a CBW, checking
@ -170,18 +174,23 @@ static uint8_t MassStore_WaitForDataReceived(void)
/** Sends or receives the transaction's data stage to or from the attached device, reading or
* writing to the nominated buffer.
*
* \param[in,out] BufferPtr Pointer to the data buffer to read from or write to
* \param[in] SCSICommandBlock Pointer to a SCSI command block structure being sent to the attached device
* \param[in,out] BufferPtr Pointer to the data buffer to read from or write to
*
* \return A value from the Pipe_Stream_RW_ErrorCodes_t enum
*/
static uint8_t MassStore_SendReceiveData(void* BufferPtr)
static uint8_t MassStore_SendReceiveData(CommandBlockWrapper_t* SCSICommandBlock, void* BufferPtr)
{
uint8_t ErrorCode = PIPE_RWSTREAM_NoError;
uint16_t BytesRem = SCSICommandBlock.Header.DataTransferLength;
uint16_t BytesRem = SCSICommandBlock->DataTransferLength;
/* Check the direction of the SCSI command data stage */
if (SCSICommandBlock.Header.Flags & COMMAND_DIRECTION_DATA_IN)
if (SCSICommandBlock->Flags & COMMAND_DIRECTION_DATA_IN)
{
/* Wait until the device has replied with some data */
if ((ErrorCode = MassStore_WaitForDataReceived()) != PIPE_RWSTREAM_NoError)
return ErrorCode;
/* Select the IN data pipe for data reception */
Pipe_SelectPipe(MASS_STORE_DATA_IN_PIPE);
Pipe_Unfreeze();
@ -221,9 +230,11 @@ static uint8_t MassStore_SendReceiveData(void* BufferPtr)
/** Routine to receive the current CSW from the device.
*
* \return A value from the Pipe_Stream_RW_ErrorCodes_t enum
* \param[out] SCSICommandStatus Pointer to a destination where the returned status data should be stored
*
* \return A value from the Pipe_Stream_RW_ErrorCodes_t enum, or MASS_STORE_SCSI_COMMAND_FAILED if the SCSI command fails
*/
static uint8_t MassStore_GetReturnedStatus(void)
static uint8_t MassStore_GetReturnedStatus(CommandStatusWrapper_t* SCSICommandStatus)
{
uint8_t ErrorCode = PIPE_RWSTREAM_NoError;
@ -236,7 +247,7 @@ static uint8_t MassStore_GetReturnedStatus(void)
Pipe_Unfreeze();
/* Load in the CSW from the attached device */
if ((ErrorCode = Pipe_Read_Stream_LE(&SCSICommandStatus, sizeof(CommandStatusWrapper_t))) != PIPE_RWSTREAM_NoError)
if ((ErrorCode = Pipe_Read_Stream_LE(SCSICommandStatus, sizeof(CommandStatusWrapper_t))) != PIPE_RWSTREAM_NoError)
return ErrorCode;
/* Clear the data ready for next reception */
@ -245,13 +256,17 @@ static uint8_t MassStore_GetReturnedStatus(void)
/* Freeze the IN pipe after use */
Pipe_Freeze();
return PIPE_RWSTREAM_NoError;
/* Check to see if command failed */
if (SCSICommandStatus->Status != Command_Pass)
ErrorCode = MASS_STORE_SCSI_COMMAND_FAILED;
return ErrorCode;
}
/** Issues a Mass Storage class specific request to reset the attached device's Mass Storage interface,
* readying the device for the next CBW.
*
* \return A value from the USB_Host_SendControlErrorCodes_t enum
* \return A value from the USB_Host_SendControlErrorCodes_t enum, or MASS_STORE_SCSI_COMMAND_FAILED if the SCSI command fails
*/
uint8_t MassStore_MassStorageReset(void)
{
@ -275,7 +290,7 @@ uint8_t MassStore_MassStorageReset(void)
*
* \param[out] MaxLUNIndex Pointer to the location that the maximum LUN index value should be stored
*
* \return A value from the USB_Host_SendControlErrorCodes_t enum
* \return A value from the USB_Host_SendControlErrorCodes_t enum, or MASS_STORE_SCSI_COMMAND_FAILED if the SCSI command fails
*/
uint8_t MassStore_GetMaxLUN(uint8_t* const MaxLUNIndex)
{
@ -311,26 +326,21 @@ uint8_t MassStore_GetMaxLUN(uint8_t* const MaxLUNIndex)
* \param[in] LUNIndex Index of the LUN inside the device the command is being addressed to
* \param[out] InquiryPtr Pointer to the inquiry data structure where the inquiry data from the device is to be stored
*
* \return A value from the Pipe_Stream_RW_ErrorCodes_t enum
* \return A value from the Pipe_Stream_RW_ErrorCodes_t enum, or MASS_STORE_SCSI_COMMAND_FAILED if the SCSI command fails
*/
uint8_t MassStore_Inquiry(const uint8_t LUNIndex, const SCSI_Inquiry_Response_t* const InquiryPtr)
uint8_t MassStore_Inquiry(const uint8_t LUNIndex, SCSI_Inquiry_Response_t* const InquiryPtr)
{
uint8_t ReturnCode = PIPE_RWSTREAM_NoError;
uint8_t ErrorCode = PIPE_RWSTREAM_NoError;
/* Create a CBW with a SCSI command to issue INQUIRY command */
SCSICommandBlock = (CommandBlockWrapper_t)
CommandBlockWrapper_t SCSICommandBlock = (CommandBlockWrapper_t)
{
.Header =
{
.Signature = CBW_SIGNATURE,
.Tag = MassStore_Tag,
.DataTransferLength = sizeof(SCSI_Inquiry_Response_t),
.Flags = COMMAND_DIRECTION_DATA_IN,
.LUN = LUNIndex,
.SCSICommandLength = 6
},
.SCSICommandData =
.Signature = CBW_SIGNATURE,
.DataTransferLength = sizeof(SCSI_Inquiry_Response_t),
.Flags = COMMAND_DIRECTION_DATA_IN,
.LUN = LUNIndex,
.SCSICommandLength = 6,
.SCSICommandData =
{
SCSI_CMD_INQUIRY,
0x00, // Reserved
@ -341,31 +351,23 @@ uint8_t MassStore_Inquiry(const uint8_t LUNIndex, const SCSI_Inquiry_Response_t*
}
};
/* Send SCSI command to the attached device */
MassStore_SendCommand();
/* Wait until data received from the device */
if ((ReturnCode = MassStore_WaitForDataReceived()) != PIPE_RWSTREAM_NoError)
{
Pipe_Freeze();
return ReturnCode;
}
CommandStatusWrapper_t SCSICommandStatus;
/* Read the returned sense data into the buffer */
if ((ReturnCode = MassStore_SendReceiveData((uint8_t*)InquiryPtr)) != PIPE_RWSTREAM_NoError)
/* Send the command and any data to the attached device */
if ((ErrorCode = MassStore_SendCommand(&SCSICommandBlock, InquiryPtr)) != PIPE_RWSTREAM_NoError)
{
Pipe_Freeze();
return ReturnCode;
return ErrorCode;
}
/* Read in the returned CSW from the device */
if ((ReturnCode = MassStore_GetReturnedStatus()) != PIPE_RWSTREAM_NoError)
/* Retrieve status information from the attached device */
if ((ErrorCode = MassStore_GetReturnedStatus(&SCSICommandStatus)) != PIPE_RWSTREAM_NoError)
{
Pipe_Freeze();
return ReturnCode;
return ErrorCode;
}
return PIPE_RWSTREAM_NoError;
return ErrorCode;
}
/** Issues a SCSI Request Sense command to the attached device, to determine the current SCSI sense information. This
@ -374,25 +376,20 @@ uint8_t MassStore_Inquiry(const uint8_t LUNIndex, const SCSI_Inquiry_Response_t*
* \param[in] LUNIndex Index of the LUN inside the device the command is being addressed to
* \param[out] SensePtr Pointer to the sense data structure where the sense data from the device is to be stored
*
* \return A value from the Pipe_Stream_RW_ErrorCodes_t enum
* \return A value from the Pipe_Stream_RW_ErrorCodes_t enum, or MASS_STORE_SCSI_COMMAND_FAILED if the SCSI command fails
*/
uint8_t MassStore_RequestSense(const uint8_t LUNIndex, const SCSI_Request_Sense_Response_t* const SensePtr)
uint8_t MassStore_RequestSense(const uint8_t LUNIndex, SCSI_Request_Sense_Response_t* const SensePtr)
{
uint8_t ReturnCode = PIPE_RWSTREAM_NoError;
uint8_t ErrorCode = PIPE_RWSTREAM_NoError;
/* Create a CBW with a SCSI command to issue REQUEST SENSE command */
SCSICommandBlock = (CommandBlockWrapper_t)
CommandBlockWrapper_t SCSICommandBlock = (CommandBlockWrapper_t)
{
.Header =
{
.Signature = CBW_SIGNATURE,
.Tag = MassStore_Tag,
.DataTransferLength = sizeof(SCSI_Request_Sense_Response_t),
.Flags = COMMAND_DIRECTION_DATA_IN,
.LUN = LUNIndex,
.SCSICommandLength = 6
},
.Signature = CBW_SIGNATURE,
.DataTransferLength = sizeof(SCSI_Request_Sense_Response_t),
.Flags = COMMAND_DIRECTION_DATA_IN,
.LUN = LUNIndex,
.SCSICommandLength = 6,
.SCSICommandData =
{
SCSI_CMD_REQUEST_SENSE,
@ -404,31 +401,23 @@ uint8_t MassStore_RequestSense(const uint8_t LUNIndex, const SCSI_Request_Sense_
}
};
/* Send SCSI command to the attached device */
MassStore_SendCommand();
CommandStatusWrapper_t SCSICommandStatus;
/* Wait until data received from the device */
if ((ReturnCode = MassStore_WaitForDataReceived()) != PIPE_RWSTREAM_NoError)
/* Send the command and any data to the attached device */
if ((ErrorCode = MassStore_SendCommand(&SCSICommandBlock, SensePtr)) != PIPE_RWSTREAM_NoError)
{
Pipe_Freeze();
return ReturnCode;
return ErrorCode;
}
/* Read the returned sense data into the buffer */
if ((ReturnCode = MassStore_SendReceiveData((uint8_t*)SensePtr)) != PIPE_RWSTREAM_NoError)
/* Retrieve status information from the attached device */
if ((ErrorCode = MassStore_GetReturnedStatus(&SCSICommandStatus)) != PIPE_RWSTREAM_NoError)
{
Pipe_Freeze();
return ReturnCode;
return ErrorCode;
}
/* Read in the returned CSW from the device */
if ((ReturnCode = MassStore_GetReturnedStatus()) != PIPE_RWSTREAM_NoError)
{
Pipe_Freeze();
return ReturnCode;
}
return PIPE_RWSTREAM_NoError;
return ErrorCode;
}
/** Issues a SCSI Device Block Read command to the attached device, to read in one or more data blocks from the
@ -440,27 +429,22 @@ uint8_t MassStore_RequestSense(const uint8_t LUNIndex, const SCSI_Request_Sense_
* \param[in] BlockSize Size in bytes of each block to read
* \param[out] BufferPtr Pointer to the buffer where the read data is to be written to
*
* \return A value from the Pipe_Stream_RW_ErrorCodes_t enum
* \return A value from the Pipe_Stream_RW_ErrorCodes_t enum, or MASS_STORE_SCSI_COMMAND_FAILED if the SCSI command fails
*/
uint8_t MassStore_ReadDeviceBlock(const uint8_t LUNIndex, const uint32_t BlockAddress,
const uint8_t Blocks, const uint16_t BlockSize, void* BufferPtr)
{
uint8_t ReturnCode = PIPE_RWSTREAM_NoError;
uint8_t ErrorCode = PIPE_RWSTREAM_NoError;
/* Create a CBW with a SCSI command to read in the given blocks from the device */
SCSICommandBlock = (CommandBlockWrapper_t)
CommandBlockWrapper_t SCSICommandBlock = (CommandBlockWrapper_t)
{
.Header =
{
.Signature = CBW_SIGNATURE,
.Tag = MassStore_Tag,
.DataTransferLength = ((uint32_t)Blocks * BlockSize),
.Flags = COMMAND_DIRECTION_DATA_IN,
.LUN = LUNIndex,
.SCSICommandLength = 10
},
.SCSICommandData =
.Signature = CBW_SIGNATURE,
.DataTransferLength = ((uint32_t)Blocks * BlockSize),
.Flags = COMMAND_DIRECTION_DATA_IN,
.LUN = LUNIndex,
.SCSICommandLength = 10,
.SCSICommandData =
{
SCSI_CMD_READ_10,
0x00, // Unused (control bits, all off)
@ -475,31 +459,23 @@ uint8_t MassStore_ReadDeviceBlock(const uint8_t LUNIndex, const uint32_t BlockAd
}
};
/* Send SCSI command to the attached device */
MassStore_SendCommand();
CommandStatusWrapper_t SCSICommandStatus;
/* Wait until data received from the device */
if ((ReturnCode = MassStore_WaitForDataReceived()) != PIPE_RWSTREAM_NoError)
/* Send the command and any data to the attached device */
if ((ErrorCode = MassStore_SendCommand(&SCSICommandBlock, BufferPtr)) != PIPE_RWSTREAM_NoError)
{
Pipe_Freeze();
return ReturnCode;
return ErrorCode;
}
/* Read the returned block data into the buffer */
if ((ReturnCode = MassStore_SendReceiveData(BufferPtr)) != PIPE_RWSTREAM_NoError)
/* Retrieve status information from the attached device */
if ((ErrorCode = MassStore_GetReturnedStatus(&SCSICommandStatus)) != PIPE_RWSTREAM_NoError)
{
Pipe_Freeze();
return ReturnCode;
return ErrorCode;
}
/* Read in the returned CSW from the device */
if ((ReturnCode = MassStore_GetReturnedStatus()) != PIPE_RWSTREAM_NoError)
{
Pipe_Freeze();
return ReturnCode;
}
return PIPE_RWSTREAM_NoError;
return ErrorCode;
}
/** Issues a SCSI Device Block Write command to the attached device, to write one or more data blocks to the
@ -511,27 +487,22 @@ uint8_t MassStore_ReadDeviceBlock(const uint8_t LUNIndex, const uint32_t BlockAd
* \param[in] BlockSize Size in bytes of each block to write
* \param[in] BufferPtr Pointer to the buffer where the write data is to be sourced from
*
* \return A value from the Pipe_Stream_RW_ErrorCodes_t enum
* \return A value from the Pipe_Stream_RW_ErrorCodes_t enum, or MASS_STORE_SCSI_COMMAND_FAILED if the SCSI command fails
*/
uint8_t MassStore_WriteDeviceBlock(const uint8_t LUNIndex, const uint32_t BlockAddress,
const uint8_t Blocks, const uint16_t BlockSize, void* BufferPtr)
{
uint8_t ReturnCode = PIPE_RWSTREAM_NoError;
uint8_t ErrorCode = PIPE_RWSTREAM_NoError;
/* Create a CBW with a SCSI command to write the given blocks to the device */
SCSICommandBlock = (CommandBlockWrapper_t)
CommandBlockWrapper_t SCSICommandBlock = (CommandBlockWrapper_t)
{
.Header =
{
.Signature = CBW_SIGNATURE,
.Tag = MassStore_Tag,
.DataTransferLength = ((uint32_t)Blocks * BlockSize),
.Flags = COMMAND_DIRECTION_DATA_OUT,
.LUN = LUNIndex,
.SCSICommandLength = 10
},
.SCSICommandData =
.Signature = CBW_SIGNATURE,
.DataTransferLength = ((uint32_t)Blocks * BlockSize),
.Flags = COMMAND_DIRECTION_DATA_OUT,
.LUN = LUNIndex,
.SCSICommandLength = 10,
.SCSICommandData =
{
SCSI_CMD_WRITE_10,
0x00, // Unused (control bits, all off)
@ -546,24 +517,23 @@ uint8_t MassStore_WriteDeviceBlock(const uint8_t LUNIndex, const uint32_t BlockA
}
};
/* Send SCSI command to the attached device */
MassStore_SendCommand();
CommandStatusWrapper_t SCSICommandStatus;
/* Write the data to the device from the buffer */
if ((ReturnCode = MassStore_SendReceiveData(BufferPtr)) != PIPE_RWSTREAM_NoError)
/* Send the command and any data to the attached device */
if ((ErrorCode = MassStore_SendCommand(&SCSICommandBlock, BufferPtr)) != PIPE_RWSTREAM_NoError)
{
Pipe_Freeze();
return ReturnCode;
return ErrorCode;
}
/* Read in the returned CSW from the device */
if ((ReturnCode = MassStore_GetReturnedStatus()) != PIPE_RWSTREAM_NoError)
/* Retrieve status information from the attached device */
if ((ErrorCode = MassStore_GetReturnedStatus(&SCSICommandStatus)) != PIPE_RWSTREAM_NoError)
{
Pipe_Freeze();
return ReturnCode;
return ErrorCode;
}
return PIPE_RWSTREAM_NoError;
return ErrorCode;
}
/** Issues a SCSI Device Test Unit Ready command to the attached device, to determine if the device is ready to accept
@ -571,26 +541,21 @@ uint8_t MassStore_WriteDeviceBlock(const uint8_t LUNIndex, const uint32_t BlockA
*
* \param[in] LUNIndex Index of the LUN inside the device the command is being addressed to
*
* \return A value from the Pipe_Stream_RW_ErrorCodes_t enum
* \return A value from the Pipe_Stream_RW_ErrorCodes_t enum, or MASS_STORE_SCSI_COMMAND_FAILED if the SCSI command fails
*/
uint8_t MassStore_TestUnitReady(const uint8_t LUNIndex)
{
uint8_t ReturnCode = PIPE_RWSTREAM_NoError;
uint8_t ErrorCode = PIPE_RWSTREAM_NoError;
/* Create a CBW with a SCSI command to issue TEST UNIT READY command */
SCSICommandBlock = (CommandBlockWrapper_t)
CommandBlockWrapper_t SCSICommandBlock = (CommandBlockWrapper_t)
{
.Header =
{
.Signature = CBW_SIGNATURE,
.Tag = MassStore_Tag,
.DataTransferLength = 0,
.Flags = COMMAND_DIRECTION_DATA_IN,
.LUN = LUNIndex,
.SCSICommandLength = 6
},
.SCSICommandData =
.Signature = CBW_SIGNATURE,
.DataTransferLength = 0,
.Flags = COMMAND_DIRECTION_DATA_IN,
.LUN = LUNIndex,
.SCSICommandLength = 6,
.SCSICommandData =
{
SCSI_CMD_TEST_UNIT_READY,
0x00, // Reserved
@ -601,17 +566,23 @@ uint8_t MassStore_TestUnitReady(const uint8_t LUNIndex)
}
};
/* Send SCSI command to the attached device */
MassStore_SendCommand();
CommandStatusWrapper_t SCSICommandStatus;
/* Read in the returned CSW from the device */
if ((ReturnCode = MassStore_GetReturnedStatus()) != PIPE_RWSTREAM_NoError)
/* Send the command and any data to the attached device */
if ((ErrorCode = MassStore_SendCommand(&SCSICommandBlock, NULL)) != PIPE_RWSTREAM_NoError)
{
Pipe_Freeze();
return ReturnCode;
return ErrorCode;
}
return PIPE_RWSTREAM_NoError;
/* Retrieve status information from the attached device */
if ((ErrorCode = MassStore_GetReturnedStatus(&SCSICommandStatus)) != PIPE_RWSTREAM_NoError)
{
Pipe_Freeze();
return ErrorCode;
}
return ErrorCode;
}
/** Issues a SCSI Device Read Capacity command to the attached device, to determine the capacity of the
@ -620,26 +591,21 @@ uint8_t MassStore_TestUnitReady(const uint8_t LUNIndex)
* \param[in] LUNIndex Index of the LUN inside the device the command is being addressed to
* \param[out] CapacityPtr Device capacity structure where the capacity data is to be stored
*
* \return A value from the Pipe_Stream_RW_ErrorCodes_t enum
* \return A value from the Pipe_Stream_RW_ErrorCodes_t enum, or MASS_STORE_SCSI_COMMAND_FAILED if the SCSI command fails
*/
uint8_t MassStore_ReadCapacity(const uint8_t LUNIndex, SCSI_Capacity_t* const CapacityPtr)
{
uint8_t ReturnCode = PIPE_RWSTREAM_NoError;
uint8_t ErrorCode = PIPE_RWSTREAM_NoError;
/* Create a CBW with a SCSI command to issue READ CAPACITY command */
SCSICommandBlock = (CommandBlockWrapper_t)
CommandBlockWrapper_t SCSICommandBlock = (CommandBlockWrapper_t)
{
.Header =
{
.Signature = CBW_SIGNATURE,
.Tag = MassStore_Tag,
.DataTransferLength = sizeof(SCSI_Capacity_t),
.Flags = COMMAND_DIRECTION_DATA_IN,
.LUN = LUNIndex,
.SCSICommandLength = 10
},
.SCSICommandData =
.Signature = CBW_SIGNATURE,
.DataTransferLength = sizeof(SCSI_Capacity_t),
.Flags = COMMAND_DIRECTION_DATA_IN,
.LUN = LUNIndex,
.SCSICommandLength = 10,
.SCSICommandData =
{
SCSI_CMD_READ_CAPACITY_10,
0x00, // Reserved
@ -654,35 +620,27 @@ uint8_t MassStore_ReadCapacity(const uint8_t LUNIndex, SCSI_Capacity_t* const Ca
}
};
/* Send SCSI command to the attached device */
MassStore_SendCommand();
CommandStatusWrapper_t SCSICommandStatus;
/* Wait until data received from the device */
if ((ReturnCode = MassStore_WaitForDataReceived()) != PIPE_RWSTREAM_NoError)
/* Send the command and any data to the attached device */
if ((ErrorCode = MassStore_SendCommand(&SCSICommandBlock, CapacityPtr)) != PIPE_RWSTREAM_NoError)
{
Pipe_Freeze();
return ReturnCode;
}
/* Read the returned capacity data into the buffer */
if ((ReturnCode = MassStore_SendReceiveData(CapacityPtr)) != PIPE_RWSTREAM_NoError)
{
Pipe_Freeze();
return ReturnCode;
return ErrorCode;
}
/* Endian-correct the read data */
CapacityPtr->Blocks = SwapEndian_32(CapacityPtr->Blocks);
CapacityPtr->BlockSize = SwapEndian_32(CapacityPtr->BlockSize);
/* Read in the returned CSW from the device */
if ((ReturnCode = MassStore_GetReturnedStatus()) != PIPE_RWSTREAM_NoError)
/* Retrieve status information from the attached device */
if ((ErrorCode = MassStore_GetReturnedStatus(&SCSICommandStatus)) != PIPE_RWSTREAM_NoError)
{
Pipe_Freeze();
return ReturnCode;
return ErrorCode;
}
return PIPE_RWSTREAM_NoError;
return ErrorCode;
}
/** Issues a SCSI Device Prevent/Allow Medium Removal command to the attached device, to lock the physical media from
@ -692,26 +650,21 @@ uint8_t MassStore_ReadCapacity(const uint8_t LUNIndex, SCSI_Capacity_t* const Ca
* \param[in] LUNIndex Index of the LUN inside the device the command is being addressed to
* \param[in] PreventRemoval Whether or not the LUN media should be locked to prevent removal or not
*
* \return A value from the Pipe_Stream_RW_ErrorCodes_t enum
* \return A value from the Pipe_Stream_RW_ErrorCodes_t enum, or MASS_STORE_SCSI_COMMAND_FAILED if the SCSI command fails
*/
uint8_t MassStore_PreventAllowMediumRemoval(const uint8_t LUNIndex, const bool PreventRemoval)
{
uint8_t ReturnCode = PIPE_RWSTREAM_NoError;
uint8_t ErrorCode = PIPE_RWSTREAM_NoError;
/* Create a CBW with a SCSI command to issue PREVENT ALLOW MEDIUM REMOVAL command */
SCSICommandBlock = (CommandBlockWrapper_t)
CommandBlockWrapper_t SCSICommandBlock = (CommandBlockWrapper_t)
{
.Header =
{
.Signature = CBW_SIGNATURE,
.Tag = MassStore_Tag,
.DataTransferLength = 0,
.Flags = COMMAND_DIRECTION_DATA_OUT,
.LUN = LUNIndex,
.SCSICommandLength = 6
},
.SCSICommandData =
.Signature = CBW_SIGNATURE,
.DataTransferLength = 0,
.Flags = COMMAND_DIRECTION_DATA_OUT,
.LUN = LUNIndex,
.SCSICommandLength = 6,
.SCSICommandData =
{
SCSI_CMD_PREVENT_ALLOW_MEDIUM_REMOVAL,
0x00, // Reserved
@ -722,15 +675,21 @@ uint8_t MassStore_PreventAllowMediumRemoval(const uint8_t LUNIndex, const bool P
}
};
/* Send SCSI command to the attached device */
MassStore_SendCommand();
CommandStatusWrapper_t SCSICommandStatus;
/* Read in the returned CSW from the device */
if ((ReturnCode = MassStore_GetReturnedStatus()))
/* Send the command and any data to the attached device */
if ((ErrorCode = MassStore_SendCommand(&SCSICommandBlock, NULL)) != PIPE_RWSTREAM_NoError)
{
Pipe_Freeze();
return ReturnCode;
return ErrorCode;
}
return PIPE_RWSTREAM_NoError;
/* Retrieve status information from the attached device */
if ((ErrorCode = MassStore_GetReturnedStatus(&SCSICommandStatus)) != PIPE_RWSTREAM_NoError)
{
Pipe_Freeze();
return ErrorCode;
}
return ErrorCode;
}

52
Demos/Host/LowLevel/MassStorageHost/Lib/MassStoreCommands.h
Unescape View File

@ -46,31 +46,34 @@
/* Macros: */
/** Class specific request to reset the Mass Storage interface of the attached device */
#define REQ_MassStorageReset 0xFF
#define REQ_MassStorageReset 0xFF
/** Class specific request to retrieve the maximum Logical Unit Number (LUN) index of the attached device */
#define REQ_GetMaxLUN 0xFE
#define REQ_GetMaxLUN 0xFE
/** Command Block Wrapper signature byte, for verification of valid CBW blocks */
#define CBW_SIGNATURE 0x43425355UL
#define CBW_SIGNATURE 0x43425355UL
/** Command Static Wrapper signature byte, for verification of valid CSW blocks */
#define CSW_SIGNATURE 0x53425355UL
#define CSW_SIGNATURE 0x53425355UL
/** Data direction mask for the Flags field of a CBW, indicating Host-to-Device transfer direction */
#define COMMAND_DIRECTION_DATA_OUT (0 << 7)
#define COMMAND_DIRECTION_DATA_OUT (0 << 7)
/** Data direction mask for the Flags field of a CBW, indicating Device-to-Host transfer direction */
#define COMMAND_DIRECTION_DATA_IN (1 << 7)
#define COMMAND_DIRECTION_DATA_IN (1 << 7)
/** Timeout period between the issuing of a CBW to a device, and the reception of the first packet */
#define COMMAND_DATA_TIMEOUT_MS 2000
#define COMMAND_DATA_TIMEOUT_MS 2000
/** Pipe number of the Mass Storage data IN pipe */
#define MASS_STORE_DATA_IN_PIPE 1
#define MASS_STORE_DATA_IN_PIPE 1
/** Pipe number of the Mass Storage data OUT pipe */
#define MASS_STORE_DATA_OUT_PIPE 2
#define MASS_STORE_DATA_OUT_PIPE 2
/** Additional error code for Mass Storage functions when a device returns a logical command failure */
#define MASS_STORE_SCSI_COMMAND_FAILED 0xC0
/* Type defines: */
/** Type define for a Mass Storage class Command Block Wrapper, used to wrap SCSI
@ -78,17 +81,13 @@
*/
typedef struct
{
struct
{
uint32_t Signature; /**< Command block signature, always equal to CBW_SIGNATURE */
uint32_t Tag; /**< Current CBW tag, to positively associate a CBW with a CSW */
uint32_t DataTransferLength; /**< Length of data to transfer, following the CBW */
uint8_t Flags; /**< Block flags, equal to one of the COMMAND_DIRECTION_DATA_* macros */
uint8_t LUN; /**< Logical Unit Number the CBW is addressed to in the device */
uint8_t SCSICommandLength; /**< Length of the SCSI command in the CBW */
} Header;
uint8_t SCSICommandData[16]; /**< SCSI command to issue to the device */
uint32_t Signature; /**< Command block signature, always equal to CBW_SIGNATURE */
uint32_t Tag; /**< Current CBW tag, to positively associate a CBW with a CSW (filled automatically) */
uint32_t DataTransferLength; /**< Length of data to transfer, following the CBW */
uint8_t Flags; /**< Block flags, equal to one of the COMMAND_DIRECTION_DATA_* macros */
uint8_t LUN; /**< Logical Unit Number the CBW is addressed to in the device */
uint8_t SCSICommandLength; /**< Length of the SCSI command in the CBW */
uint8_t SCSICommandData[16]; /**< SCSI command to issue to the device */
} CommandBlockWrapper_t;
/** Type define for a Mass Storage class Command Status Wrapper, used to wrap SCSI
@ -184,22 +183,19 @@
Phase_Error = 2 /**< Phase error while processing the issued command */
};
/* External Variables: */
extern CommandStatusWrapper_t SCSICommandStatus;
/* Function Prototypes: */
#if defined(INCLUDE_FROM_MASSSTORE_COMMANDS_C)
static uint8_t MassStore_SendCommand(void);
static uint8_t MassStore_SendCommand(CommandBlockWrapper_t* SCSICommandBlock, void* BufferPtr);
static uint8_t MassStore_WaitForDataReceived(void);
static uint8_t MassStore_SendReceiveData(void* BufferPtr) ATTR_NON_NULL_PTR_ARG(1);
static uint8_t MassStore_GetReturnedStatus(void);
static uint8_t MassStore_SendReceiveData(CommandBlockWrapper_t* SCSICommandBlock, void* BufferPtr) ATTR_NON_NULL_PTR_ARG(1);
static uint8_t MassStore_GetReturnedStatus(CommandStatusWrapper_t* SCSICommandStatus) ATTR_NON_NULL_PTR_ARG(1);
#endif
uint8_t MassStore_MassStorageReset(void);
uint8_t MassStore_GetMaxLUN(uint8_t* const MaxLUNIndex);
uint8_t MassStore_RequestSense(const uint8_t LUNIndex, const SCSI_Request_Sense_Response_t* const SensePtr)
uint8_t MassStore_RequestSense(const uint8_t LUNIndex, SCSI_Request_Sense_Response_t* const SensePtr)
ATTR_NON_NULL_PTR_ARG(2);
uint8_t MassStore_Inquiry(const uint8_t LUNIndex, const SCSI_Inquiry_Response_t* const InquiryPtr)
uint8_t MassStore_Inquiry(const uint8_t LUNIndex, SCSI_Inquiry_Response_t* const InquiryPtr)
ATTR_NON_NULL_PTR_ARG(2);
uint8_t MassStore_ReadDeviceBlock(const uint8_t LUNIndex, const uint32_t BlockAddress,
const uint8_t Blocks, const uint16_t BlockSize, void* BufferPtr) ATTR_NON_NULL_PTR_ARG(5);

62
Demos/Host/LowLevel/MassStorageHost/MassStorageHost.c
Unescape View File

@ -182,7 +182,7 @@ void MassStorage_Task(void)
/* Send the request, display error and wait for device detach if request fails */
if ((ErrorCode = MassStore_GetMaxLUN(&MassStore_MaxLUNIndex)) != HOST_SENDCONTROL_Successful)
{
ShowDiskReadError(PSTR("Get Max LUN"), false, ErrorCode);
ShowDiskReadError(PSTR("Get Max LUN"), ErrorCode);
USB_HostState = HOST_STATE_WaitForDeviceRemoval;
break;
@ -194,7 +194,7 @@ void MassStorage_Task(void)
/* Reset the Mass Storage device interface, ready for use */
if ((ErrorCode = MassStore_MassStorageReset()) != HOST_SENDCONTROL_Successful)
{
ShowDiskReadError(PSTR("Mass Storage Reset"), false, ErrorCode);
ShowDiskReadError(PSTR("Mass Storage Reset"), ErrorCode);
USB_HostState = HOST_STATE_WaitForDeviceRemoval;
break;
@ -203,16 +203,17 @@ void MassStorage_Task(void)
/* Get sense data from the device - many devices will not accept any other commands until the sense data
* is read - both on start-up and after a failed command */
SCSI_Request_Sense_Response_t SenseData;
if (((ErrorCode = MassStore_RequestSense(0, &SenseData)) != 0) || (SCSICommandStatus.Status != Command_Pass))
if ((ErrorCode = MassStore_RequestSense(0, &SenseData)) != 0)
{
ShowDiskReadError(PSTR("Request Sense"), (SCSICommandStatus.Status != Command_Pass), ErrorCode);
ShowDiskReadError(PSTR("Request Sense"), ErrorCode);
USB_HostState = HOST_STATE_WaitForDeviceRemoval;
break;
}
/* Set the prevent removal flag for the device, allowing it to be accessed */
if (((ErrorCode = MassStore_PreventAllowMediumRemoval(0, true)) != 0) || (SCSICommandStatus.Status != Command_Pass))
if ((ErrorCode = MassStore_PreventAllowMediumRemoval(0, true)) != 0)
{
ShowDiskReadError(PSTR("Prevent/Allow Medium Removal"), (SCSICommandStatus.Status != Command_Pass), ErrorCode);
ShowDiskReadError(PSTR("Prevent/Allow Medium Removal"), ErrorCode);
USB_HostState = HOST_STATE_WaitForDeviceRemoval;
break;
@ -220,9 +221,9 @@ void MassStorage_Task(void)
/* Get inquiry data from the device */
SCSI_Inquiry_Response_t InquiryData;
if (((ErrorCode = MassStore_Inquiry(0, &InquiryData)) != 0) || (SCSICommandStatus.Status != Command_Pass))
if ((ErrorCode = MassStore_Inquiry(0, &InquiryData)) != 0)
{
ShowDiskReadError(PSTR("Inquiry"), (SCSICommandStatus.Status != Command_Pass), ErrorCode);
ShowDiskReadError(PSTR("Inquiry"), ErrorCode);
USB_HostState = HOST_STATE_WaitForDeviceRemoval;
break;
@ -234,7 +235,7 @@ void MassStorage_Task(void)
/* Wait until disk ready */
puts_P(PSTR("Waiting until ready.."));
do
for (;;)
{
Serial_TxByte('.');
@ -242,15 +243,22 @@ void MassStorage_Task(void)
if (USB_HostState == HOST_STATE_Unattached)
break;
if ((ErrorCode = MassStore_TestUnitReady(0)) != PIPE_RWSTREAM_NoError)
/* Check to see if the attached device is ready for new commands */
ErrorCode = MassStore_TestUnitReady(0);
/* If attached device is ready, abort the loop */
if (!(ErrorCode))
break;
/* If an error othe than a logical command failure (indicating device busy) returned, abort */
if (ErrorCode != MASS_STORE_SCSI_COMMAND_FAILED)
{
ShowDiskReadError(PSTR("Test Unit Ready"), false, ErrorCode);
ShowDiskReadError(PSTR("Test Unit Ready"), ErrorCode);
USB_HostState = HOST_STATE_WaitForDeviceRemoval;
break;
}
}
while (SCSICommandStatus.Status != Command_Pass);
puts_P(PSTR("\r\nRetrieving Capacity... "));
@ -258,9 +266,9 @@ void MassStorage_Task(void)
SCSI_Capacity_t DiskCapacity;
/* Retrieve disk capacity */
if (((ErrorCode = MassStore_ReadCapacity(0, &DiskCapacity)) != 0) || (SCSICommandStatus.Status != Command_Pass))
if ((ErrorCode = MassStore_ReadCapacity(0, &DiskCapacity)) != 0)
{
ShowDiskReadError(PSTR("Read Capacity"), (SCSICommandStatus.Status != Command_Pass), ErrorCode);
ShowDiskReadError(PSTR("Read Capacity"), ErrorCode);
USB_HostState = HOST_STATE_WaitForDeviceRemoval;
break;
@ -273,10 +281,9 @@ void MassStorage_Task(void)
uint8_t BlockBuffer[DiskCapacity.BlockSize];
/* Read in the first 512 byte block from the device */
if (((ErrorCode = MassStore_ReadDeviceBlock(0, 0x00000000, 1, DiskCapacity.BlockSize, BlockBuffer)) != 0) ||
(SCSICommandStatus.Status != Command_Pass))
if ((ErrorCode = MassStore_ReadDeviceBlock(0, 0x00000000, 1, DiskCapacity.BlockSize, BlockBuffer)) != 0)
{
ShowDiskReadError(PSTR("Read Device Block"), (SCSICommandStatus.Status != Command_Pass), ErrorCode);
ShowDiskReadError(PSTR("Read Device Block"), ErrorCode);
USB_HostState = HOST_STATE_WaitForDeviceRemoval;
break;
@ -321,14 +328,17 @@ void MassStorage_Task(void)
break;
}
/* Abort if device removed */
if (USB_HostState == HOST_STATE_Unattached)
break;
/* Print out the entire disk contents in ASCII format */
for (uint32_t CurrBlock = 0; CurrBlock < DiskCapacity.Blocks; CurrBlock++)
for (uint32_t CurrBlockAddress = 0; CurrBlockAddress < DiskCapacity.Blocks; CurrBlockAddress++)
{
/* Read in the next block of data from the device */
if (((ErrorCode = MassStore_ReadDeviceBlock(0, CurrBlock, 1, DiskCapacity.BlockSize, BlockBuffer)) != 0) ||
(SCSICommandStatus.Status != Command_Pass))
if ((ErrorCode = MassStore_ReadDeviceBlock(0, CurrBlockAddress, 1, DiskCapacity.BlockSize, BlockBuffer)) != 0)
{
ShowDiskReadError(PSTR("Read Device Block"), (SCSICommandStatus.Status != Command_Pass), ErrorCode);
ShowDiskReadError(PSTR("Read Device Block"), ErrorCode);
USB_HostState = HOST_STATE_WaitForDeviceRemoval;
break;
@ -360,17 +370,15 @@ void MassStorage_Task(void)
* printing error codes to the serial port and waiting until the device is removed before
* continuing.
*
* \param[in] CommandString ASCII string located in PROGMEM space indicating what operation failed
* \param[in] FailedAtSCSILayer Indicates if the command failed at the (logical) SCSI layer or at the physical USB layer
* \param[in] ErrorCode Error code of the function which failed to complete successfully
* \param[in] CommandString ASCII string located in PROGMEM space indicating what operation failed
* \param[in] ErrorCode Error code of the function which failed to complete successfully
*/
void ShowDiskReadError(char* CommandString, bool FailedAtSCSILayer, uint8_t ErrorCode)
void ShowDiskReadError(char* CommandString, uint8_t ErrorCode)
{
if (FailedAtSCSILayer)
if (ErrorCode == MASS_STORE_SCSI_COMMAND_FAILED)
{
/* Display the error code */
printf_P(PSTR(ESC_FG_RED "SCSI command error (%S).\r\n"), CommandString);
printf_P(PSTR(" -- Status Code: %d" ESC_FG_WHITE), ErrorCode);
}
else
{

2
Demos/Host/LowLevel/MassStorageHost/MassStorageHost.h
Unescape View File

@ -82,6 +82,6 @@
void EVENT_USB_Host_DeviceEnumerationFailed(const uint8_t ErrorCode, const uint8_t SubErrorCode);
void EVENT_USB_Host_DeviceEnumerationComplete(void);
void ShowDiskReadError(char* CommandString, bool FailedAtSCSILayer, uint8_t ErrorCode);
void ShowDiskReadError(char* CommandString, uint8_t ErrorCode);
#endif

8
LUFA/Drivers/USB/Class/Host/MassStorage.c
Unescape View File

@ -110,8 +110,10 @@ static uint8_t DComp_NextInterfaceBulkDataEndpoint(void* CurrentDescriptor)
{
if (DESCRIPTOR_TYPE(CurrentDescriptor) == DTYPE_Endpoint)
{
uint8_t EndpointType = (DESCRIPTOR_CAST(CurrentDescriptor,
USB_Descriptor_Endpoint_t).Attributes & EP_TYPE_MASK);
USB_Descriptor_Endpoint_t* CurrentEndpoint = DESCRIPTOR_PCAST(CurrentDescriptor,
USB_Descriptor_Endpoint_t);
uint8_t EndpointType = (CurrentEndpoint->Attributes & EP_TYPE_MASK);
if ((EndpointType == EP_TYPE_BULK) &&
(!(Pipe_IsEndpointBound(CurrentEndpoint->EndpointAddress))))
@ -137,7 +139,7 @@ static uint8_t MS_Host_SendCommand(USB_ClassInfo_MS_Host_t* MSInterfaceInfo, MS_
{
uint8_t ErrorCode = PIPE_RWSTREAM_NoError;
SCSICommandBlock->Tag = MSInterfaceInfo->State.TransactionTag++;
SCSICommandBlock->Tag = ++MSInterfaceInfo->State.TransactionTag;
if (MSInterfaceInfo->State.TransactionTag == 0xFFFFFFFF)
MSInterfaceInfo->State.TransactionTag = 1;

1
LUFA/ManPages/ChangeLog.txt
Unescape View File

@ -28,6 +28,7 @@
* - Added non-null function parameter pointer restrictions to USB Class drivers to improve user code reliability
* - Added new "Common" section to the class drivers, to hold all mode-independant definitions for clarity
* - Moved SCSI command/sense constants into the Mass Storage Class driver, instead of the user-code
* - Altered the SCSI commands in the LowLevel Mass Storage Host to save on FLASH space by reducing function calls
*
* <b>Fixed:</b>
* - Fixed possible lockup in the CDC device class driver, when the host sends data that is a multiple of the

2
Projects/AVRISP/Lib/V2ProtocolTarget.c
Unescape View File

@ -92,8 +92,8 @@ void V2Protocol_ChangeTargetResetLine(bool ResetTarget)
}
else
{
RESET_LINE_PORT &= ~RESET_LINE_MASK;
RESET_LINE_DDR &= ~RESET_LINE_MASK;
RESET_LINE_PORT &= ~RESET_LINE_MASK;
}
}

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