Commit for the 091122 release.

[pub/USBasp.git] / Demos / Device / ClassDriver / MassStorage / Lib / SCSI.c

diff --git a/Demos/Device/ClassDriver/MassStorage/Lib/SCSI.c b/Demos/Device/ClassDriver/MassStorage/Lib/SCSI.c
index 771773b..2e5adba 100644 (file)
--- a/Demos/Device/ClassDriver/MassStorage/Lib/SCSI.c
+++ b/Demos/Device/ClassDriver/MassStorage/Lib/SCSI.c
@@ -88,34 +88,36 @@ SCSI_Request_Sense_Response_t SenseData =
  */\r
 bool SCSI_DecodeSCSICommand(USB_ClassInfo_MS_Device_t* MSInterfaceInfo)\r
 {\r
  */\r
 bool SCSI_DecodeSCSICommand(USB_ClassInfo_MS_Device_t* MSInterfaceInfo)\r
 {\r

-       bool CommandSuccess = false;\r
-\r
+       /* Set initial sense data, before the requested command is processed */\r
+       SCSI_SET_SENSE(SCSI_SENSE_KEY_GOOD,\r
+                      SCSI_ASENSE_NO_ADDITIONAL_INFORMATION,\r
+                      SCSI_ASENSEQ_NO_QUALIFIER);\r
+                                          \r

        /* Run the appropriate SCSI command hander function based on the passed command */\r
        switch (MSInterfaceInfo->State.CommandBlock.SCSICommandData[0])\r
        {\r
                case SCSI_CMD_INQUIRY:\r
        /* Run the appropriate SCSI command hander function based on the passed command */\r
        switch (MSInterfaceInfo->State.CommandBlock.SCSICommandData[0])\r
        {\r
                case SCSI_CMD_INQUIRY:\r

-                       CommandSuccess = SCSI_Command_Inquiry(MSInterfaceInfo);                 \r
+                       SCSI_Command_Inquiry(MSInterfaceInfo);                  \r

                        break;\r
                case SCSI_CMD_REQUEST_SENSE:\r
                        break;\r
                case SCSI_CMD_REQUEST_SENSE:\r

-                       CommandSuccess = SCSI_Command_Request_Sense(MSInterfaceInfo);\r
+                       SCSI_Command_Request_Sense(MSInterfaceInfo);\r

                        break;\r
                case SCSI_CMD_READ_CAPACITY_10:\r
                        break;\r
                case SCSI_CMD_READ_CAPACITY_10:\r

-                       CommandSuccess = SCSI_Command_Read_Capacity_10(MSInterfaceInfo);                        \r
+                       SCSI_Command_Read_Capacity_10(MSInterfaceInfo);                 \r

                        break;\r
                case SCSI_CMD_SEND_DIAGNOSTIC:\r
                        break;\r
                case SCSI_CMD_SEND_DIAGNOSTIC:\r

-                       CommandSuccess = SCSI_Command_Send_Diagnostic(MSInterfaceInfo);\r
+                       SCSI_Command_Send_Diagnostic(MSInterfaceInfo);\r

                        break;\r
                case SCSI_CMD_WRITE_10:\r
                        break;\r
                case SCSI_CMD_WRITE_10:\r

-                       CommandSuccess = SCSI_Command_ReadWrite_10(MSInterfaceInfo, DATA_WRITE);\r
+                       SCSI_Command_ReadWrite_10(MSInterfaceInfo, DATA_WRITE);\r

                        break;\r
                case SCSI_CMD_READ_10:\r
                        break;\r
                case SCSI_CMD_READ_10:\r

-                       CommandSuccess = SCSI_Command_ReadWrite_10(MSInterfaceInfo, DATA_READ);\r
+                       SCSI_Command_ReadWrite_10(MSInterfaceInfo, DATA_READ);\r

                        break;\r
                case SCSI_CMD_TEST_UNIT_READY:\r
                case SCSI_CMD_PREVENT_ALLOW_MEDIUM_REMOVAL:\r
                case SCSI_CMD_VERIFY_10:\r
                        /* These commands should just succeed, no handling required */\r
                        break;\r
                case SCSI_CMD_TEST_UNIT_READY:\r
                case SCSI_CMD_PREVENT_ALLOW_MEDIUM_REMOVAL:\r
                case SCSI_CMD_VERIFY_10:\r
                        /* These commands should just succeed, no handling required */\r

-                       CommandSuccess = true;\r

                        MSInterfaceInfo->State.CommandBlock.DataTransferLength = 0;\r
                        break;\r
                default:\r
                        MSInterfaceInfo->State.CommandBlock.DataTransferLength = 0;\r
                        break;\r
                default:\r


@@ -126,27 +128,15 @@ bool SCSI_DecodeSCSICommand(USB_ClassInfo_MS_Device_t* MSInterfaceInfo)
                        break;\r
        }\r
 \r
                        break;\r
        }\r
 \r

-       /* Check if command was successfully processed */\r
-       if (CommandSuccess)\r
-       {\r
-               SCSI_SET_SENSE(SCSI_SENSE_KEY_GOOD,\r
-                              SCSI_ASENSE_NO_ADDITIONAL_INFORMATION,\r
-                              SCSI_ASENSEQ_NO_QUALIFIER);\r
-               \r
-               return true;\r
-       }\r
-\r
-       return false;\r
+       return (SenseData.SenseKey == SCSI_SENSE_KEY_GOOD);\r

 }\r
 \r
 /** Command processing for an issued SCSI INQUIRY command. This command returns information about the device's features\r
  *  and capabilities to the host.\r
  *\r
  *  \param[in] MSInterfaceInfo  Pointer to the Mass Storage class interface structure that the command is associated with\r
 }\r
 \r
 /** Command processing for an issued SCSI INQUIRY command. This command returns information about the device's features\r
  *  and capabilities to the host.\r
  *\r
  *  \param[in] MSInterfaceInfo  Pointer to the Mass Storage class interface structure that the command is associated with\r

- *\r
- *  \return Boolean true if the command completed successfully, false otherwise.\r

  */\r
  */\r

-static bool SCSI_Command_Inquiry(USB_ClassInfo_MS_Device_t* MSInterfaceInfo)\r
+static void SCSI_Command_Inquiry(USB_ClassInfo_MS_Device_t* MSInterfaceInfo)\r

 {\r
        uint16_t AllocationLength  = (((uint16_t)MSInterfaceInfo->State.CommandBlock.SCSICommandData[3] << 8) |\r
                                                 MSInterfaceInfo->State.CommandBlock.SCSICommandData[4]);\r
 {\r
        uint16_t AllocationLength  = (((uint16_t)MSInterfaceInfo->State.CommandBlock.SCSICommandData[3] << 8) |\r
                                                 MSInterfaceInfo->State.CommandBlock.SCSICommandData[4]);\r


@@ -162,7 +152,7 @@ static bool SCSI_Command_Inquiry(USB_ClassInfo_MS_Device_t* MSInterfaceInfo)
                               SCSI_ASENSE_INVALID_FIELD_IN_CDB,\r
                               SCSI_ASENSEQ_NO_QUALIFIER);\r
 \r
                               SCSI_ASENSE_INVALID_FIELD_IN_CDB,\r
                               SCSI_ASENSEQ_NO_QUALIFIER);\r
 \r

-               return false;\r
+               return;\r

        }\r
        \r
        Endpoint_Write_Stream_LE(&InquiryData, BytesTransferred, NO_STREAM_CALLBACK);\r
        }\r
        \r
        Endpoint_Write_Stream_LE(&InquiryData, BytesTransferred, NO_STREAM_CALLBACK);\r


@@ -177,18 +167,14 @@ static bool SCSI_Command_Inquiry(USB_ClassInfo_MS_Device_t* MSInterfaceInfo)
 \r
        /* Succeed the command and update the bytes transferred counter */\r
        MSInterfaceInfo->State.CommandBlock.DataTransferLength -= BytesTransferred;\r
 \r
        /* Succeed the command and update the bytes transferred counter */\r
        MSInterfaceInfo->State.CommandBlock.DataTransferLength -= BytesTransferred;\r

-       \r
-       return true;\r

 }\r
 \r
 /** Command processing for an issued SCSI REQUEST SENSE command. This command returns information about the last issued command,\r
  *  including the error code and additional error information so that the host can determine why a command failed to complete.\r
  *\r
  *  \param[in] MSInterfaceInfo  Pointer to the Mass Storage class interface structure that the command is associated with\r
 }\r
 \r
 /** Command processing for an issued SCSI REQUEST SENSE command. This command returns information about the last issued command,\r
  *  including the error code and additional error information so that the host can determine why a command failed to complete.\r
  *\r
  *  \param[in] MSInterfaceInfo  Pointer to the Mass Storage class interface structure that the command is associated with\r

- *\r
- *  \return Boolean true if the command completed successfully, false otherwise.\r

  */\r
  */\r

-static bool SCSI_Command_Request_Sense(USB_ClassInfo_MS_Device_t* MSInterfaceInfo)\r
+static void SCSI_Command_Request_Sense(USB_ClassInfo_MS_Device_t* MSInterfaceInfo)\r

 {\r
        uint8_t  AllocationLength = MSInterfaceInfo->State.CommandBlock.SCSICommandData[4];\r
        uint8_t  BytesTransferred = (AllocationLength < sizeof(SenseData))? AllocationLength : sizeof(SenseData);\r
 {\r
        uint8_t  AllocationLength = MSInterfaceInfo->State.CommandBlock.SCSICommandData[4];\r
        uint8_t  BytesTransferred = (AllocationLength < sizeof(SenseData))? AllocationLength : sizeof(SenseData);\r


@@ -201,18 +187,14 @@ static bool SCSI_Command_Request_Sense(USB_ClassInfo_MS_Device_t* MSInterfaceInf
 \r
        /* Succeed the command and update the bytes transferred counter */\r
        MSInterfaceInfo->State.CommandBlock.DataTransferLength -= BytesTransferred;\r
 \r
        /* Succeed the command and update the bytes transferred counter */\r
        MSInterfaceInfo->State.CommandBlock.DataTransferLength -= BytesTransferred;\r

-\r
-       return true;\r

 }\r
 \r
 /** Command processing for an issued SCSI READ CAPACITY (10) command. This command returns information about the device's capacity\r
  *  on the selected Logical Unit (drive), as a number of OS-sized blocks.\r
  *\r
  *  \param[in] MSInterfaceInfo  Pointer to the Mass Storage class interface structure that the command is associated with\r
 }\r
 \r
 /** Command processing for an issued SCSI READ CAPACITY (10) command. This command returns information about the device's capacity\r
  *  on the selected Logical Unit (drive), as a number of OS-sized blocks.\r
  *\r
  *  \param[in] MSInterfaceInfo  Pointer to the Mass Storage class interface structure that the command is associated with\r

- *\r
- *  \return Boolean true if the command completed successfully, false otherwise.\r

  */\r
  */\r

-static bool SCSI_Command_Read_Capacity_10(USB_ClassInfo_MS_Device_t* MSInterfaceInfo)\r
+static void SCSI_Command_Read_Capacity_10(USB_ClassInfo_MS_Device_t* MSInterfaceInfo)\r

 {\r
        uint32_t LastBlockAddressInLUN = (LUN_MEDIA_BLOCKS - 1);\r
        uint32_t MediaBlockSize        = VIRTUAL_MEMORY_BLOCK_SIZE;\r
 {\r
        uint32_t LastBlockAddressInLUN = (LUN_MEDIA_BLOCKS - 1);\r
        uint32_t MediaBlockSize        = VIRTUAL_MEMORY_BLOCK_SIZE;\r


@@ -223,8 +205,6 @@ static bool SCSI_Command_Read_Capacity_10(USB_ClassInfo_MS_Device_t* MSInterface
        \r
        /* Succeed the command and update the bytes transferred counter */\r
        MSInterfaceInfo->State.CommandBlock.DataTransferLength -= 8;\r
        \r
        /* Succeed the command and update the bytes transferred counter */\r
        MSInterfaceInfo->State.CommandBlock.DataTransferLength -= 8;\r

-       \r
-       return true;\r

 }\r
 \r
 /** Command processing for an issued SCSI SEND DIAGNOSTIC command. This command performs a quick check of the Dataflash ICs on the\r
 }\r
 \r
 /** Command processing for an issued SCSI SEND DIAGNOSTIC command. This command performs a quick check of the Dataflash ICs on the\r


@@ -232,10 +212,8 @@ static bool SCSI_Command_Read_Capacity_10(USB_ClassInfo_MS_Device_t* MSInterface
  *  supported.\r
  *\r
  *  \param[in] MSInterfaceInfo  Pointer to the Mass Storage class interface structure that the command is associated with\r
  *  supported.\r
  *\r
  *  \param[in] MSInterfaceInfo  Pointer to the Mass Storage class interface structure that the command is associated with\r

- *\r
- *  \return Boolean true if the command completed successfully, false otherwise.\r

  */\r
  */\r

-static bool SCSI_Command_Send_Diagnostic(USB_ClassInfo_MS_Device_t* MSInterfaceInfo)\r
+static void SCSI_Command_Send_Diagnostic(USB_ClassInfo_MS_Device_t* MSInterfaceInfo)\r

 {\r
        /* Check to see if the SELF TEST bit is not set */\r
        if (!(MSInterfaceInfo->State.CommandBlock.SCSICommandData[1] & (1 << 2)))\r
 {\r
        /* Check to see if the SELF TEST bit is not set */\r
        if (!(MSInterfaceInfo->State.CommandBlock.SCSICommandData[1] & (1 << 2)))\r


@@ -245,7 +223,7 @@ static bool SCSI_Command_Send_Diagnostic(USB_ClassInfo_MS_Device_t* MSInterfaceI
                               SCSI_ASENSE_INVALID_FIELD_IN_CDB,\r
                               SCSI_ASENSEQ_NO_QUALIFIER);\r
 \r
                               SCSI_ASENSE_INVALID_FIELD_IN_CDB,\r
                               SCSI_ASENSEQ_NO_QUALIFIER);\r
 \r

-               return false;\r
+               return;\r

        }\r
        \r
        /* Check to see if all attached Dataflash ICs are functional */\r
        }\r
        \r
        /* Check to see if all attached Dataflash ICs are functional */\r


@@ -256,13 +234,11 @@ static bool SCSI_Command_Send_Diagnostic(USB_ClassInfo_MS_Device_t* MSInterfaceI
                               SCSI_ASENSE_NO_ADDITIONAL_INFORMATION,\r
                               SCSI_ASENSEQ_NO_QUALIFIER);      \r
        \r
                               SCSI_ASENSE_NO_ADDITIONAL_INFORMATION,\r
                               SCSI_ASENSEQ_NO_QUALIFIER);      \r
        \r

-               return false;\r
+               return;\r

        }\r
        \r
        /* Succeed the command and update the bytes transferred counter */\r
        MSInterfaceInfo->State.CommandBlock.DataTransferLength = 0;\r
        }\r
        \r
        /* Succeed the command and update the bytes transferred counter */\r
        MSInterfaceInfo->State.CommandBlock.DataTransferLength = 0;\r

-       \r
-       return true;\r

 }\r
 \r
 /** Command processing for an issued SCSI READ (10) or WRITE (10) command. This command reads in the block start address\r
 }\r
 \r
 /** Command processing for an issued SCSI READ (10) or WRITE (10) command. This command reads in the block start address\r


@@ -271,23 +247,17 @@ static bool SCSI_Command_Send_Diagnostic(USB_ClassInfo_MS_Device_t* MSInterfaceI
  *\r
  *  \param[in] MSInterfaceInfo  Pointer to the Mass Storage class interface structure that the command is associated with\r
  *  \param[in] IsDataRead  Indicates if the command is a READ (10) command or WRITE (10) command (DATA_READ or DATA_WRITE)\r
  *\r
  *  \param[in] MSInterfaceInfo  Pointer to the Mass Storage class interface structure that the command is associated with\r
  *  \param[in] IsDataRead  Indicates if the command is a READ (10) command or WRITE (10) command (DATA_READ or DATA_WRITE)\r

- *\r
- *  \return Boolean true if the command completed successfully, false otherwise.\r

  */\r
  */\r

-static bool SCSI_Command_ReadWrite_10(USB_ClassInfo_MS_Device_t* MSInterfaceInfo, const bool IsDataRead)\r
+static void SCSI_Command_ReadWrite_10(USB_ClassInfo_MS_Device_t* MSInterfaceInfo, const bool IsDataRead)\r

 {\r
        uint32_t BlockAddress;\r
        uint16_t TotalBlocks;\r
        \r
 {\r
        uint32_t BlockAddress;\r
        uint16_t TotalBlocks;\r
        \r

-       /* Load in the 32-bit block address (SCSI uses big-endian, so have to do it byte-by-byte) */\r
-       ((uint8_t*)&BlockAddress)[3] = MSInterfaceInfo->State.CommandBlock.SCSICommandData[2];\r
-       ((uint8_t*)&BlockAddress)[2] = MSInterfaceInfo->State.CommandBlock.SCSICommandData[3];\r
-       ((uint8_t*)&BlockAddress)[1] = MSInterfaceInfo->State.CommandBlock.SCSICommandData[4];\r
-       ((uint8_t*)&BlockAddress)[0] = MSInterfaceInfo->State.CommandBlock.SCSICommandData[5];\r
+       /* Load in the 32-bit block address (SCSI uses big-endian, so have to reverse the byte order) */\r
+       BlockAddress = SwapEndian_32(*(uint32_t*)&MSInterfaceInfo->State.CommandBlock.SCSICommandData[2]);\r

 \r
 \r

-       /* Load in the 16-bit total blocks (SCSI uses big-endian, so have to do it byte-by-byte) */\r
-       ((uint8_t*)&TotalBlocks)[1]  = MSInterfaceInfo->State.CommandBlock.SCSICommandData[7];\r
-       ((uint8_t*)&TotalBlocks)[0]  = MSInterfaceInfo->State.CommandBlock.SCSICommandData[8];\r
+       /* Load in the 16-bit total blocks (SCSI uses big-endian, so have to reverse the byte order) */\r
+       TotalBlocks  = SwapEndian_16(*(uint32_t*)&MSInterfaceInfo->State.CommandBlock.SCSICommandData[7]);\r

        \r
        /* Check if the block address is outside the maximum allowable value for the LUN */\r
        if (BlockAddress >= LUN_MEDIA_BLOCKS)\r
        \r
        /* Check if the block address is outside the maximum allowable value for the LUN */\r
        if (BlockAddress >= LUN_MEDIA_BLOCKS)\r


@@ -297,7 +267,7 @@ static bool SCSI_Command_ReadWrite_10(USB_ClassInfo_MS_Device_t* MSInterfaceInfo
                               SCSI_ASENSE_LOGICAL_BLOCK_ADDRESS_OUT_OF_RANGE,\r
                               SCSI_ASENSEQ_NO_QUALIFIER);\r
 \r
                               SCSI_ASENSE_LOGICAL_BLOCK_ADDRESS_OUT_OF_RANGE,\r
                               SCSI_ASENSEQ_NO_QUALIFIER);\r
 \r

-               return false;\r
+               return;\r

        }\r
 \r
        #if (TOTAL_LUNS > 1)\r
        }\r
 \r
        #if (TOTAL_LUNS > 1)\r


@@ -313,6 +283,4 @@ static bool SCSI_Command_ReadWrite_10(USB_ClassInfo_MS_Device_t* MSInterfaceInfo
 \r
        /* Update the bytes transferred counter and succeed the command */\r
        MSInterfaceInfo->State.CommandBlock.DataTransferLength -= ((uint32_t)TotalBlocks * VIRTUAL_MEMORY_BLOCK_SIZE);\r
 \r
        /* Update the bytes transferred counter and succeed the command */\r
        MSInterfaceInfo->State.CommandBlock.DataTransferLength -= ((uint32_t)TotalBlocks * VIRTUAL_MEMORY_BLOCK_SIZE);\r

-       \r
-       return true;\r

 }\r
 }\r