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Cleanups to the Device mode Mass Storage demo applications' SCSI routines.

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pull/1469/head
Dean Camera 15 years ago
parent 3ecc462954
commit b7eead83aa
7 changed files with 62 additions and 121 deletions
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70
Demos/Device/ClassDriver/MassStorage/Lib/SCSI.c
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@ -88,34 +88,36 @@ SCSI_Request_Sense_Response_t SenseData =
*/ */
bool SCSI_DecodeSCSICommand(USB_ClassInfo_MS_Device_t* MSInterfaceInfo) bool SCSI_DecodeSCSICommand(USB_ClassInfo_MS_Device_t* MSInterfaceInfo)
{ {
bool CommandSuccess = false; /* Set initial sense data, before the requested command is processed */
SCSI_SET_SENSE(SCSI_SENSE_KEY_GOOD,
SCSI_ASENSE_NO_ADDITIONAL_INFORMATION,
SCSI_ASENSEQ_NO_QUALIFIER);
/* Run the appropriate SCSI command hander function based on the passed command */ /* Run the appropriate SCSI command hander function based on the passed command */
switch (MSInterfaceInfo->State.CommandBlock.SCSICommandData[0]) switch (MSInterfaceInfo->State.CommandBlock.SCSICommandData[0])
{ {
case SCSI_CMD_INQUIRY: case SCSI_CMD_INQUIRY:
CommandSuccess = SCSI_Command_Inquiry(MSInterfaceInfo); SCSI_Command_Inquiry(MSInterfaceInfo);
break; break;
case SCSI_CMD_REQUEST_SENSE: case SCSI_CMD_REQUEST_SENSE:
CommandSuccess = SCSI_Command_Request_Sense(MSInterfaceInfo); SCSI_Command_Request_Sense(MSInterfaceInfo);
break; break;
case SCSI_CMD_READ_CAPACITY_10: case SCSI_CMD_READ_CAPACITY_10:
CommandSuccess = SCSI_Command_Read_Capacity_10(MSInterfaceInfo); SCSI_Command_Read_Capacity_10(MSInterfaceInfo);
break; break;
case SCSI_CMD_SEND_DIAGNOSTIC: case SCSI_CMD_SEND_DIAGNOSTIC:
CommandSuccess = SCSI_Command_Send_Diagnostic(MSInterfaceInfo); SCSI_Command_Send_Diagnostic(MSInterfaceInfo);
break; break;
case SCSI_CMD_WRITE_10: case SCSI_CMD_WRITE_10:
CommandSuccess = SCSI_Command_ReadWrite_10(MSInterfaceInfo, DATA_WRITE); SCSI_Command_ReadWrite_10(MSInterfaceInfo, DATA_WRITE);
break; break;
case SCSI_CMD_READ_10: case SCSI_CMD_READ_10:
CommandSuccess = SCSI_Command_ReadWrite_10(MSInterfaceInfo, DATA_READ); SCSI_Command_ReadWrite_10(MSInterfaceInfo, DATA_READ);
break; break;
case SCSI_CMD_TEST_UNIT_READY: case SCSI_CMD_TEST_UNIT_READY:
case SCSI_CMD_PREVENT_ALLOW_MEDIUM_REMOVAL: case SCSI_CMD_PREVENT_ALLOW_MEDIUM_REMOVAL:
case SCSI_CMD_VERIFY_10: case SCSI_CMD_VERIFY_10:
/* These commands should just succeed, no handling required */ /* These commands should just succeed, no handling required */
CommandSuccess = true;
MSInterfaceInfo->State.CommandBlock.DataTransferLength = 0; MSInterfaceInfo->State.CommandBlock.DataTransferLength = 0;
break; break;
default: default:
@ -126,27 +128,15 @@ bool SCSI_DecodeSCSICommand(USB_ClassInfo_MS_Device_t* MSInterfaceInfo)
break; break;
} }
/* Check if command was successfully processed */ return (SenseData.SenseKey == SCSI_SENSE_KEY_GOOD);
if (CommandSuccess)
{
SCSI_SET_SENSE(SCSI_SENSE_KEY_GOOD,
SCSI_ASENSE_NO_ADDITIONAL_INFORMATION,
SCSI_ASENSEQ_NO_QUALIFIER);
return true;
}
return false;
} }
/** Command processing for an issued SCSI INQUIRY command. This command returns information about the device's features /** Command processing for an issued SCSI INQUIRY command. This command returns information about the device's features
* and capabilities to the host. * and capabilities to the host.
* *
* \param[in] MSInterfaceInfo Pointer to the Mass Storage class interface structure that the command is associated with * \param[in] MSInterfaceInfo Pointer to the Mass Storage class interface structure that the command is associated with
*
* \return Boolean true if the command completed successfully, false otherwise.
*/ */
static bool SCSI_Command_Inquiry(USB_ClassInfo_MS_Device_t* MSInterfaceInfo) static void SCSI_Command_Inquiry(USB_ClassInfo_MS_Device_t* MSInterfaceInfo)
{ {
uint16_t AllocationLength = (((uint16_t)MSInterfaceInfo->State.CommandBlock.SCSICommandData[3] << 8) | uint16_t AllocationLength = (((uint16_t)MSInterfaceInfo->State.CommandBlock.SCSICommandData[3] << 8) |
MSInterfaceInfo->State.CommandBlock.SCSICommandData[4]); MSInterfaceInfo->State.CommandBlock.SCSICommandData[4]);
@ -162,7 +152,7 @@ static bool SCSI_Command_Inquiry(USB_ClassInfo_MS_Device_t* MSInterfaceInfo)
SCSI_ASENSE_INVALID_FIELD_IN_CDB, SCSI_ASENSE_INVALID_FIELD_IN_CDB,
SCSI_ASENSEQ_NO_QUALIFIER); SCSI_ASENSEQ_NO_QUALIFIER);
return false; return;
} }
Endpoint_Write_Stream_LE(&InquiryData, BytesTransferred, NO_STREAM_CALLBACK); Endpoint_Write_Stream_LE(&InquiryData, BytesTransferred, NO_STREAM_CALLBACK);
@ -177,18 +167,14 @@ static bool SCSI_Command_Inquiry(USB_ClassInfo_MS_Device_t* MSInterfaceInfo)
/* Succeed the command and update the bytes transferred counter */ /* Succeed the command and update the bytes transferred counter */
MSInterfaceInfo->State.CommandBlock.DataTransferLength -= BytesTransferred; MSInterfaceInfo->State.CommandBlock.DataTransferLength -= BytesTransferred;
return true;
} }
/** Command processing for an issued SCSI REQUEST SENSE command. This command returns information about the last issued command, /** Command processing for an issued SCSI REQUEST SENSE command. This command returns information about the last issued command,
* including the error code and additional error information so that the host can determine why a command failed to complete. * including the error code and additional error information so that the host can determine why a command failed to complete.
* *
* \param[in] MSInterfaceInfo Pointer to the Mass Storage class interface structure that the command is associated with * \param[in] MSInterfaceInfo Pointer to the Mass Storage class interface structure that the command is associated with
*
* \return Boolean true if the command completed successfully, false otherwise.
*/ */
static bool SCSI_Command_Request_Sense(USB_ClassInfo_MS_Device_t* MSInterfaceInfo) static void SCSI_Command_Request_Sense(USB_ClassInfo_MS_Device_t* MSInterfaceInfo)
{ {
uint8_t AllocationLength = MSInterfaceInfo->State.CommandBlock.SCSICommandData[4]; uint8_t AllocationLength = MSInterfaceInfo->State.CommandBlock.SCSICommandData[4];
uint8_t BytesTransferred = (AllocationLength < sizeof(SenseData))? AllocationLength : sizeof(SenseData); uint8_t BytesTransferred = (AllocationLength < sizeof(SenseData))? AllocationLength : sizeof(SenseData);
@ -201,18 +187,14 @@ static bool SCSI_Command_Request_Sense(USB_ClassInfo_MS_Device_t* MSInterfaceInf
/* Succeed the command and update the bytes transferred counter */ /* Succeed the command and update the bytes transferred counter */
MSInterfaceInfo->State.CommandBlock.DataTransferLength -= BytesTransferred; MSInterfaceInfo->State.CommandBlock.DataTransferLength -= BytesTransferred;
return true;
} }
/** Command processing for an issued SCSI READ CAPACITY (10) command. This command returns information about the device's capacity /** Command processing for an issued SCSI READ CAPACITY (10) command. This command returns information about the device's capacity
* on the selected Logical Unit (drive), as a number of OS-sized blocks. * on the selected Logical Unit (drive), as a number of OS-sized blocks.
* *
* \param[in] MSInterfaceInfo Pointer to the Mass Storage class interface structure that the command is associated with * \param[in] MSInterfaceInfo Pointer to the Mass Storage class interface structure that the command is associated with
*
* \return Boolean true if the command completed successfully, false otherwise.
*/ */
static bool SCSI_Command_Read_Capacity_10(USB_ClassInfo_MS_Device_t* MSInterfaceInfo) static void SCSI_Command_Read_Capacity_10(USB_ClassInfo_MS_Device_t* MSInterfaceInfo)
{ {
uint32_t LastBlockAddressInLUN = (LUN_MEDIA_BLOCKS - 1); uint32_t LastBlockAddressInLUN = (LUN_MEDIA_BLOCKS - 1);
uint32_t MediaBlockSize = VIRTUAL_MEMORY_BLOCK_SIZE; uint32_t MediaBlockSize = VIRTUAL_MEMORY_BLOCK_SIZE;
@ -223,8 +205,6 @@ static bool SCSI_Command_Read_Capacity_10(USB_ClassInfo_MS_Device_t* MSInterface
/* Succeed the command and update the bytes transferred counter */ /* Succeed the command and update the bytes transferred counter */
MSInterfaceInfo->State.CommandBlock.DataTransferLength -= 8; MSInterfaceInfo->State.CommandBlock.DataTransferLength -= 8;
return true;
} }
/** Command processing for an issued SCSI SEND DIAGNOSTIC command. This command performs a quick check of the Dataflash ICs on the /** Command processing for an issued SCSI SEND DIAGNOSTIC command. This command performs a quick check of the Dataflash ICs on the
@ -232,10 +212,8 @@ static bool SCSI_Command_Read_Capacity_10(USB_ClassInfo_MS_Device_t* MSInterface
* supported. * supported.
* *
* \param[in] MSInterfaceInfo Pointer to the Mass Storage class interface structure that the command is associated with * \param[in] MSInterfaceInfo Pointer to the Mass Storage class interface structure that the command is associated with
*
* \return Boolean true if the command completed successfully, false otherwise.
*/ */
static bool SCSI_Command_Send_Diagnostic(USB_ClassInfo_MS_Device_t* MSInterfaceInfo) static void SCSI_Command_Send_Diagnostic(USB_ClassInfo_MS_Device_t* MSInterfaceInfo)
{ {
/* Check to see if the SELF TEST bit is not set */ /* Check to see if the SELF TEST bit is not set */
if (!(MSInterfaceInfo->State.CommandBlock.SCSICommandData[1] & (1 << 2))) if (!(MSInterfaceInfo->State.CommandBlock.SCSICommandData[1] & (1 << 2)))
@ -245,7 +223,7 @@ static bool SCSI_Command_Send_Diagnostic(USB_ClassInfo_MS_Device_t* MSInterfaceI
SCSI_ASENSE_INVALID_FIELD_IN_CDB, SCSI_ASENSE_INVALID_FIELD_IN_CDB,
SCSI_ASENSEQ_NO_QUALIFIER); SCSI_ASENSEQ_NO_QUALIFIER);
return false; return;
} }
/* Check to see if all attached Dataflash ICs are functional */ /* Check to see if all attached Dataflash ICs are functional */
@ -256,13 +234,13 @@ static bool SCSI_Command_Send_Diagnostic(USB_ClassInfo_MS_Device_t* MSInterfaceI
SCSI_ASENSE_NO_ADDITIONAL_INFORMATION, SCSI_ASENSE_NO_ADDITIONAL_INFORMATION,
SCSI_ASENSEQ_NO_QUALIFIER); SCSI_ASENSEQ_NO_QUALIFIER);
return false; return;
} }
/* Succeed the command and update the bytes transferred counter */ /* Succeed the command and update the bytes transferred counter */
MSInterfaceInfo->State.CommandBlock.DataTransferLength = 0; MSInterfaceInfo->State.CommandBlock.DataTransferLength = 0;
return true; return;
} }
/** Command processing for an issued SCSI READ (10) or WRITE (10) command. This command reads in the block start address /** Command processing for an issued SCSI READ (10) or WRITE (10) command. This command reads in the block start address
@ -271,10 +249,8 @@ static bool SCSI_Command_Send_Diagnostic(USB_ClassInfo_MS_Device_t* MSInterfaceI
* *
* \param[in] MSInterfaceInfo Pointer to the Mass Storage class interface structure that the command is associated with * \param[in] MSInterfaceInfo Pointer to the Mass Storage class interface structure that the command is associated with
* \param[in] IsDataRead Indicates if the command is a READ (10) command or WRITE (10) command (DATA_READ or DATA_WRITE) * \param[in] IsDataRead Indicates if the command is a READ (10) command or WRITE (10) command (DATA_READ or DATA_WRITE)
*
* \return Boolean true if the command completed successfully, false otherwise.
*/ */
static bool SCSI_Command_ReadWrite_10(USB_ClassInfo_MS_Device_t* MSInterfaceInfo, const bool IsDataRead) static void SCSI_Command_ReadWrite_10(USB_ClassInfo_MS_Device_t* MSInterfaceInfo, const bool IsDataRead)
{ {
uint32_t BlockAddress; uint32_t BlockAddress;
uint16_t TotalBlocks; uint16_t TotalBlocks;
@ -297,7 +273,7 @@ static bool SCSI_Command_ReadWrite_10(USB_ClassInfo_MS_Device_t* MSInterfaceInfo
SCSI_ASENSE_LOGICAL_BLOCK_ADDRESS_OUT_OF_RANGE, SCSI_ASENSE_LOGICAL_BLOCK_ADDRESS_OUT_OF_RANGE,
SCSI_ASENSEQ_NO_QUALIFIER); SCSI_ASENSEQ_NO_QUALIFIER);
return false; return;
} }
#if (TOTAL_LUNS > 1) #if (TOTAL_LUNS > 1)
@ -314,5 +290,5 @@ static bool SCSI_Command_ReadWrite_10(USB_ClassInfo_MS_Device_t* MSInterfaceInfo
/* Update the bytes transferred counter and succeed the command */ /* Update the bytes transferred counter and succeed the command */
MSInterfaceInfo->State.CommandBlock.DataTransferLength -= ((uint32_t)TotalBlocks * VIRTUAL_MEMORY_BLOCK_SIZE); MSInterfaceInfo->State.CommandBlock.DataTransferLength -= ((uint32_t)TotalBlocks * VIRTUAL_MEMORY_BLOCK_SIZE);
return true; return;
} }

10
Demos/Device/ClassDriver/MassStorage/Lib/SCSI.h
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@ -137,11 +137,11 @@
bool SCSI_DecodeSCSICommand(USB_ClassInfo_MS_Device_t* MSInterfaceInfo); bool SCSI_DecodeSCSICommand(USB_ClassInfo_MS_Device_t* MSInterfaceInfo);
#if defined(INCLUDE_FROM_SCSI_C) #if defined(INCLUDE_FROM_SCSI_C)
static bool SCSI_Command_Inquiry(USB_ClassInfo_MS_Device_t* MSInterfaceInfo); static void SCSI_Command_Inquiry(USB_ClassInfo_MS_Device_t* MSInterfaceInfo);
static bool SCSI_Command_Request_Sense(USB_ClassInfo_MS_Device_t* MSInterfaceInfo); static void SCSI_Command_Request_Sense(USB_ClassInfo_MS_Device_t* MSInterfaceInfo);
static bool SCSI_Command_Read_Capacity_10(USB_ClassInfo_MS_Device_t* MSInterfaceInfo); static void SCSI_Command_Read_Capacity_10(USB_ClassInfo_MS_Device_t* MSInterfaceInfo);
static bool SCSI_Command_Send_Diagnostic(USB_ClassInfo_MS_Device_t* MSInterfaceInfo); static void SCSI_Command_Send_Diagnostic(USB_ClassInfo_MS_Device_t* MSInterfaceInfo);
static bool SCSI_Command_ReadWrite_10(USB_ClassInfo_MS_Device_t* MSInterfaceInfo, const bool IsDataRead); static void SCSI_Command_ReadWrite_10(USB_ClassInfo_MS_Device_t* MSInterfaceInfo, const bool IsDataRead);
#endif #endif
#endif #endif

78
Demos/Device/LowLevel/MassStorage/Lib/SCSI.c
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@ -83,37 +83,41 @@ SCSI_Request_Sense_Response_t SenseData =
/** Main routine to process the SCSI command located in the Command Block Wrapper read from the host. This dispatches /** Main routine to process the SCSI command located in the Command Block Wrapper read from the host. This dispatches
* to the appropriate SCSI command handling routine if the issued command is supported by the device, else it returns * to the appropriate SCSI command handling routine if the issued command is supported by the device, else it returns
* a command failure due to a ILLEGAL REQUEST. * a command failure due to a ILLEGAL REQUEST.
*
* \return Boolean true if the command completed sucessfully, false otherwise
*/ */
void SCSI_DecodeSCSICommand(void) bool SCSI_DecodeSCSICommand(void)
{ {
bool CommandSuccess = false; /* Set initial sense data, before the requested command is processed */
SCSI_SET_SENSE(SCSI_SENSE_KEY_GOOD,
SCSI_ASENSE_NO_ADDITIONAL_INFORMATION,
SCSI_ASENSEQ_NO_QUALIFIER);
/* Run the appropriate SCSI command hander function based on the passed command */ /* Run the appropriate SCSI command hander function based on the passed command */
switch (CommandBlock.SCSICommandData[0]) switch (CommandBlock.SCSICommandData[0])
{ {
case SCSI_CMD_INQUIRY: case SCSI_CMD_INQUIRY:
CommandSuccess = SCSI_Command_Inquiry(); SCSI_Command_Inquiry();
break; break;
case SCSI_CMD_REQUEST_SENSE: case SCSI_CMD_REQUEST_SENSE:
CommandSuccess = SCSI_Command_Request_Sense(); SCSI_Command_Request_Sense();
break; break;
case SCSI_CMD_READ_CAPACITY_10: case SCSI_CMD_READ_CAPACITY_10:
CommandSuccess = SCSI_Command_Read_Capacity_10(); SCSI_Command_Read_Capacity_10();
break; break;
case SCSI_CMD_SEND_DIAGNOSTIC: case SCSI_CMD_SEND_DIAGNOSTIC:
CommandSuccess = SCSI_Command_Send_Diagnostic(); SCSI_Command_Send_Diagnostic();
break; break;
case SCSI_CMD_WRITE_10: case SCSI_CMD_WRITE_10:
CommandSuccess = SCSI_Command_ReadWrite_10(DATA_WRITE); SCSI_Command_ReadWrite_10(DATA_WRITE);
break; break;
case SCSI_CMD_READ_10: case SCSI_CMD_READ_10:
CommandSuccess = SCSI_Command_ReadWrite_10(DATA_READ); SCSI_Command_ReadWrite_10(DATA_READ);
break; break;
case SCSI_CMD_TEST_UNIT_READY: case SCSI_CMD_TEST_UNIT_READY:
case SCSI_CMD_PREVENT_ALLOW_MEDIUM_REMOVAL: case SCSI_CMD_PREVENT_ALLOW_MEDIUM_REMOVAL:
case SCSI_CMD_VERIFY_10: case SCSI_CMD_VERIFY_10:
/* These commands should just succeed, no handling required */ /* These commands should just succeed, no handling required */
CommandSuccess = true;
CommandBlock.DataTransferLength = 0; CommandBlock.DataTransferLength = 0;
break; break;
default: default:
@ -124,29 +128,13 @@ void SCSI_DecodeSCSICommand(void)
break; break;
} }
/* Check if command was successfully processed */ return (SenseData.SenseKey == SCSI_SENSE_KEY_GOOD);
if (CommandSuccess)
{
/* Command succeeded - set the CSW status and update the SENSE key */
CommandStatus.Status = Command_Pass;
SCSI_SET_SENSE(SCSI_SENSE_KEY_GOOD,
SCSI_ASENSE_NO_ADDITIONAL_INFORMATION,
SCSI_ASENSEQ_NO_QUALIFIER);
}
else
{
/* Command failed - set the CSW status - failed command function updates the SENSE key */
CommandStatus.Status = Command_Fail;
}
} }
/** Command processing for an issued SCSI INQUIRY command. This command returns information about the device's features /** Command processing for an issued SCSI INQUIRY command. This command returns information about the device's features
* and capabilities to the host. * and capabilities to the host.
*
* \return Boolean true if the command completed successfully, false otherwise.
*/ */
static bool SCSI_Command_Inquiry(void) static void SCSI_Command_Inquiry(void)
{ {
uint16_t AllocationLength = (((uint16_t)CommandBlock.SCSICommandData[3] << 8) | uint16_t AllocationLength = (((uint16_t)CommandBlock.SCSICommandData[3] << 8) |
CommandBlock.SCSICommandData[4]); CommandBlock.SCSICommandData[4]);
@ -162,7 +150,7 @@ static bool SCSI_Command_Inquiry(void)
SCSI_ASENSE_INVALID_FIELD_IN_CDB, SCSI_ASENSE_INVALID_FIELD_IN_CDB,
SCSI_ASENSEQ_NO_QUALIFIER); SCSI_ASENSEQ_NO_QUALIFIER);
return false; return;
} }
/* Write the INQUIRY data to the endpoint */ /* Write the INQUIRY data to the endpoint */
@ -178,16 +166,12 @@ static bool SCSI_Command_Inquiry(void)
/* Succeed the command and update the bytes transferred counter */ /* Succeed the command and update the bytes transferred counter */
CommandBlock.DataTransferLength -= BytesTransferred; CommandBlock.DataTransferLength -= BytesTransferred;
return true;
} }
/** Command processing for an issued SCSI REQUEST SENSE command. This command returns information about the last issued command, /** Command processing for an issued SCSI REQUEST SENSE command. This command returns information about the last issued command,
* including the error code and additional error information so that the host can determine why a command failed to complete. * including the error code and additional error information so that the host can determine why a command failed to complete.
*
* \return Boolean true if the command completed successfully, false otherwise.
*/ */
static bool SCSI_Command_Request_Sense(void) static void SCSI_Command_Request_Sense(void)
{ {
uint8_t AllocationLength = CommandBlock.SCSICommandData[4]; uint8_t AllocationLength = CommandBlock.SCSICommandData[4];
uint8_t BytesTransferred = (AllocationLength < sizeof(SenseData))? AllocationLength : sizeof(SenseData); uint8_t BytesTransferred = (AllocationLength < sizeof(SenseData))? AllocationLength : sizeof(SenseData);
@ -205,16 +189,12 @@ static bool SCSI_Command_Request_Sense(void)
/* Succeed the command and update the bytes transferred counter */ /* Succeed the command and update the bytes transferred counter */
CommandBlock.DataTransferLength -= BytesTransferred; CommandBlock.DataTransferLength -= BytesTransferred;
return true;
} }
/** Command processing for an issued SCSI READ CAPACITY (10) command. This command returns information about the device's capacity /** Command processing for an issued SCSI READ CAPACITY (10) command. This command returns information about the device's capacity
* on the selected Logical Unit (drive), as a number of OS-sized blocks. * on the selected Logical Unit (drive), as a number of OS-sized blocks.
*
* \return Boolean true if the command completed successfully, false otherwise.
*/ */
static bool SCSI_Command_Read_Capacity_10(void) static void SCSI_Command_Read_Capacity_10(void)
{ {
/* Send the total number of logical blocks in the current LUN */ /* Send the total number of logical blocks in the current LUN */
Endpoint_Write_DWord_BE(LUN_MEDIA_BLOCKS - 1); Endpoint_Write_DWord_BE(LUN_MEDIA_BLOCKS - 1);
@ -224,15 +204,13 @@ static bool SCSI_Command_Read_Capacity_10(void)
/* Check if the current command is being aborted by the host */ /* Check if the current command is being aborted by the host */
if (IsMassStoreReset) if (IsMassStoreReset)
return false; return;
/* Send the endpoint data packet to the host */ /* Send the endpoint data packet to the host */
Endpoint_ClearIN(); Endpoint_ClearIN();
/* Succeed the command and update the bytes transferred counter */ /* Succeed the command and update the bytes transferred counter */
CommandBlock.DataTransferLength -= 8; CommandBlock.DataTransferLength -= 8;
return true;
} }
/** Command processing for an issued SCSI SEND DIAGNOSTIC command. This command performs a quick check of the Dataflash ICs on the /** Command processing for an issued SCSI SEND DIAGNOSTIC command. This command performs a quick check of the Dataflash ICs on the
@ -240,10 +218,8 @@ static bool SCSI_Command_Read_Capacity_10(void)
* supported. * supported.
* *
* \param[in] MSInterfaceInfo Pointer to the Mass Storage class interface structure that the command is associated with * \param[in] MSInterfaceInfo Pointer to the Mass Storage class interface structure that the command is associated with
*
* \return Boolean true if the command completed successfully, false otherwise.
*/ */
static bool SCSI_Command_Send_Diagnostic(void) static void SCSI_Command_Send_Diagnostic(void)
{ {
/* Check to see if the SELF TEST bit is not set */ /* Check to see if the SELF TEST bit is not set */
if (!(CommandBlock.SCSICommandData[1] & (1 << 2))) if (!(CommandBlock.SCSICommandData[1] & (1 << 2)))
@ -253,7 +229,7 @@ static bool SCSI_Command_Send_Diagnostic(void)
SCSI_ASENSE_INVALID_FIELD_IN_CDB, SCSI_ASENSE_INVALID_FIELD_IN_CDB,
SCSI_ASENSEQ_NO_QUALIFIER); SCSI_ASENSEQ_NO_QUALIFIER);
return false; return;
} }
/* Check to see if all attached Dataflash ICs are functional */ /* Check to see if all attached Dataflash ICs are functional */
@ -264,13 +240,11 @@ static bool SCSI_Command_Send_Diagnostic(void)
SCSI_ASENSE_NO_ADDITIONAL_INFORMATION, SCSI_ASENSE_NO_ADDITIONAL_INFORMATION,
SCSI_ASENSEQ_NO_QUALIFIER); SCSI_ASENSEQ_NO_QUALIFIER);
return false; return;
} }
/* Succeed the command and update the bytes transferred counter */ /* Succeed the command and update the bytes transferred counter */
CommandBlock.DataTransferLength = 0; CommandBlock.DataTransferLength = 0;
return true;
} }
/** Command processing for an issued SCSI READ (10) or WRITE (10) command. This command reads in the block start address /** Command processing for an issued SCSI READ (10) or WRITE (10) command. This command reads in the block start address
@ -278,10 +252,8 @@ static bool SCSI_Command_Send_Diagnostic(void)
* reading and writing of the data. * reading and writing of the data.
* *
* \param[in] IsDataRead Indicates if the command is a READ (10) command or WRITE (10) command (DATA_READ or DATA_WRITE) * \param[in] IsDataRead Indicates if the command is a READ (10) command or WRITE (10) command (DATA_READ or DATA_WRITE)
*
* \return Boolean true if the command completed successfully, false otherwise.
*/ */
static bool SCSI_Command_ReadWrite_10(const bool IsDataRead) static void SCSI_Command_ReadWrite_10(const bool IsDataRead)
{ {
uint32_t BlockAddress; uint32_t BlockAddress;
uint16_t TotalBlocks; uint16_t TotalBlocks;
@ -304,7 +276,7 @@ static bool SCSI_Command_ReadWrite_10(const bool IsDataRead)
SCSI_ASENSE_LOGICAL_BLOCK_ADDRESS_OUT_OF_RANGE, SCSI_ASENSE_LOGICAL_BLOCK_ADDRESS_OUT_OF_RANGE,
SCSI_ASENSEQ_NO_QUALIFIER); SCSI_ASENSEQ_NO_QUALIFIER);
return false; return;
} }
#if (TOTAL_LUNS > 1) #if (TOTAL_LUNS > 1)
@ -320,6 +292,4 @@ static bool SCSI_Command_ReadWrite_10(const bool IsDataRead)
/* Update the bytes transferred counter and succeed the command */ /* Update the bytes transferred counter and succeed the command */
CommandBlock.DataTransferLength -= ((uint32_t)TotalBlocks * VIRTUAL_MEMORY_BLOCK_SIZE); CommandBlock.DataTransferLength -= ((uint32_t)TotalBlocks * VIRTUAL_MEMORY_BLOCK_SIZE);
return true;
} }

12
Demos/Device/LowLevel/MassStorage/Lib/SCSI.h
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@ -136,14 +136,14 @@
} SCSI_Request_Sense_Response_t; } SCSI_Request_Sense_Response_t;
/* Function Prototypes: */ /* Function Prototypes: */
void SCSI_DecodeSCSICommand(void); bool SCSI_DecodeSCSICommand(void);
#if defined(INCLUDE_FROM_SCSI_C) #if defined(INCLUDE_FROM_SCSI_C)
static bool SCSI_Command_Inquiry(void); static void SCSI_Command_Inquiry(void);
static bool SCSI_Command_Request_Sense(void); static void SCSI_Command_Request_Sense(void);
static bool SCSI_Command_Read_Capacity_10(void); static void SCSI_Command_Read_Capacity_10(void);
static bool SCSI_Command_Send_Diagnostic(void); static void SCSI_Command_Send_Diagnostic(void);
static bool SCSI_Command_ReadWrite_10(const bool IsDataRead); static void SCSI_Command_ReadWrite_10(const bool IsDataRead);
#endif #endif
#endif #endif

6
Demos/Device/LowLevel/MassStorage/MassStorage.c
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@ -189,15 +189,15 @@ void MassStorage_Task(void)
if (CommandBlock.Flags & COMMAND_DIRECTION_DATA_IN) if (CommandBlock.Flags & COMMAND_DIRECTION_DATA_IN)
Endpoint_SelectEndpoint(MASS_STORAGE_IN_EPNUM); Endpoint_SelectEndpoint(MASS_STORAGE_IN_EPNUM);
/* Decode the received SCSI command */ /* Decode the received SCSI command, set returned status code */
SCSI_DecodeSCSICommand(); CommandStatus.Status = SCSI_DecodeSCSICommand() ? Command_Pass : Command_Fail;
/* Load in the CBW tag into the CSW to link them together */ /* Load in the CBW tag into the CSW to link them together */
CommandStatus.Tag = CommandBlock.Tag; CommandStatus.Tag = CommandBlock.Tag;
/* Load in the data residue counter into the CSW */ /* Load in the data residue counter into the CSW */
CommandStatus.DataTransferResidue = CommandBlock.DataTransferLength; CommandStatus.DataTransferResidue = CommandBlock.DataTransferLength;
/* Stall the selected data pipe if command failed (if data is still to be transferred) */ /* Stall the selected data pipe if command failed (if data is still to be transferred) */
if ((CommandStatus.Status == Command_Fail) && (CommandStatus.DataTransferResidue)) if ((CommandStatus.Status == Command_Fail) && (CommandStatus.DataTransferResidue))
Endpoint_StallTransaction(); Endpoint_StallTransaction();

1
LUFA/ManPages/ChangeLog.txt
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@ -16,6 +16,7 @@
* <b>Changed:</b> * <b>Changed:</b>
* - Removed mostly useless "TestApp" demo, as it was mainly useful only for checking for sytax errors in the library * - Removed mostly useless "TestApp" demo, as it was mainly useful only for checking for sytax errors in the library
* - MIDI device demos now receive MIDI events from the host and display note ON messages via the board LEDs * - MIDI device demos now receive MIDI events from the host and display note ON messages via the board LEDs
* - Cleanups to the Device mode Mass Storage demo applications' SCSI routines
* *
* <b>Fixed:</b> * <b>Fixed:</b>
* - Fixed PrinterHost demo returning invalid Device ID data when the attached device does not have a * - Fixed PrinterHost demo returning invalid Device ID data when the attached device does not have a

6
LUFA/ManPages/CompilingApps.txt
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@ -22,15 +22,9 @@
* This means that while a build inside a particular demo directory will build only that particular demo, a build stated * This means that while a build inside a particular demo directory will build only that particular demo, a build stated
* from the /Demos/ directory will build all LUFA demo projects sequentially. * from the /Demos/ directory will build all LUFA demo projects sequentially.
* *
* \subsection SSec_CommandLine Via the Command Line
* To build a project from the source via the command line, the command <b>"make all"</b> should be executed from the command line in the directory * To build a project from the source via the command line, the command <b>"make all"</b> should be executed from the command line in the directory
* of interest. To remove compiled files (including the binary output, all intermediately files and all diagnostic output * of interest. To remove compiled files (including the binary output, all intermediately files and all diagnostic output
* files), execute <b>"make clean"</b>. Once a "make all" has been run and no errors were encountered, the resulting binary will * files), execute <b>"make clean"</b>. Once a "make all" has been run and no errors were encountered, the resulting binary will
* be located in the generated ".HEX" file. If your project makes use of pre-initialized EEPROM variables, the generated ".EEP" * be located in the generated ".HEX" file. If your project makes use of pre-initialized EEPROM variables, the generated ".EEP"
* file will contain the project's EEPROM data. * file will contain the project's EEPROM data.
*
* \subsection SSec_AVRStudio Via AVRStudio
* Each demo, project and bootloader contains an AVRStudio project (.aps) which can be used to build each project. Once opened
* in AVRStudio, the project can be built and cleaned using the GUI buttons or menus. Note that the AVRStudio project files make
* use of the external project makefile, thus the procedure for configuring a demo remains the same regardless of the build environment.
*/ */
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