Add new tag for the LUFA-120219-BETA release.

[pub/USBasp.git] / Projects / TempDataLogger / Lib / SCSI.c

diff --git a/Projects/TempDataLogger/Lib/SCSI.c b/Projects/TempDataLogger/Lib/SCSI.c
index b1e88dc..c0421a6 100644 (file)
--- a/Projects/TempDataLogger/Lib/SCSI.c
+++ b/Projects/TempDataLogger/Lib/SCSI.c
@@ -1,13 +1,13 @@
 /*
              LUFA Library
 /*
              LUFA Library

-     Copyright (C) Dean Camera, 2010.
+     Copyright (C) Dean Camera, 2012.

 
   dean [at] fourwalledcubicle [dot] com
            www.lufa-lib.org
 */
 
 /*
 
   dean [at] fourwalledcubicle [dot] com
            www.lufa-lib.org
 */
 
 /*

-  Copyright 2010  Dean Camera (dean [at] fourwalledcubicle [dot] com)
+  Copyright 2012  Dean Camera (dean [at] fourwalledcubicle [dot] com)

 
   Permission to use, copy, modify, distribute, and sell this
   software and its documentation for any purpose is hereby granted
 
   Permission to use, copy, modify, distribute, and sell this
   software and its documentation for any purpose is hereby granted


@@ -41,7 +41,7 @@
 /** Structure to hold the SCSI response data to a SCSI INQUIRY command. This gives information about the device's
  *  features and capabilities.
  */
 /** Structure to hold the SCSI response data to a SCSI INQUIRY command. This gives information about the device's
  *  features and capabilities.
  */

-SCSI_Inquiry_Response_t InquiryData =
+static const SCSI_Inquiry_Response_t InquiryData =

        {
                .DeviceType          = DEVICE_TYPE_BLOCK,
                .PeripheralQualifier = 0,
        {
                .DeviceType          = DEVICE_TYPE_BLOCK,
                .PeripheralQualifier = 0,


@@ -73,7 +73,7 @@ SCSI_Inquiry_Response_t InquiryData =
 /** Structure to hold the sense data for the last issued SCSI command, which is returned to the host after a SCSI REQUEST SENSE
  *  command is issued. This gives information on exactly why the last command failed to complete.
  */
 /** Structure to hold the sense data for the last issued SCSI command, which is returned to the host after a SCSI REQUEST SENSE
  *  command is issued. This gives information on exactly why the last command failed to complete.
  */

-SCSI_Request_Sense_Response_t SenseData =
+static SCSI_Request_Sense_Response_t SenseData =

        {
                .ResponseCode        = 0x70,
                .AdditionalLength    = 0x0A,
        {
                .ResponseCode        = 0x70,
                .AdditionalLength    = 0x0A,


@@ -113,6 +113,9 @@ bool SCSI_DecodeSCSICommand(USB_ClassInfo_MS_Device_t* const MSInterfaceInfo)
                case SCSI_CMD_READ_10:
                        CommandSuccess = SCSI_Command_ReadWrite_10(MSInterfaceInfo, DATA_READ);
                        break;
                case SCSI_CMD_READ_10:
                        CommandSuccess = SCSI_Command_ReadWrite_10(MSInterfaceInfo, DATA_READ);
                        break;

+               case SCSI_CMD_MODE_SENSE_6:
+                       CommandSuccess = SCSI_Command_ModeSense_6(MSInterfaceInfo);
+                       break;

                case SCSI_CMD_TEST_UNIT_READY:
                case SCSI_CMD_PREVENT_ALLOW_MEDIUM_REMOVAL:
                case SCSI_CMD_VERIFY_10:
                case SCSI_CMD_TEST_UNIT_READY:
                case SCSI_CMD_PREVENT_ALLOW_MEDIUM_REMOVAL:
                case SCSI_CMD_VERIFY_10:


@@ -151,8 +154,7 @@ bool SCSI_DecodeSCSICommand(USB_ClassInfo_MS_Device_t* const MSInterfaceInfo)
 static bool SCSI_Command_Inquiry(USB_ClassInfo_MS_Device_t* const MSInterfaceInfo)
 {
        uint16_t AllocationLength  = SwapEndian_16(*(uint16_t*)&MSInterfaceInfo->State.CommandBlock.SCSICommandData[3]);
 static bool SCSI_Command_Inquiry(USB_ClassInfo_MS_Device_t* const MSInterfaceInfo)
 {
        uint16_t AllocationLength  = SwapEndian_16(*(uint16_t*)&MSInterfaceInfo->State.CommandBlock.SCSICommandData[3]);

-       uint16_t BytesTransferred  = (AllocationLength < sizeof(InquiryData))? AllocationLength :
-                                                                              sizeof(InquiryData);
+       uint16_t BytesTransferred  = MIN(AllocationLength, sizeof(InquiryData));

 
        /* Only the standard INQUIRY data is supported, check if any optional INQUIRY bits set */
        if ((MSInterfaceInfo->State.CommandBlock.SCSICommandData[1] & ((1 << 0) | (1 << 1))) ||
 
        /* Only the standard INQUIRY data is supported, check if any optional INQUIRY bits set */
        if ((MSInterfaceInfo->State.CommandBlock.SCSICommandData[1] & ((1 << 0) | (1 << 1))) ||


@@ -166,12 +168,10 @@ static bool SCSI_Command_Inquiry(USB_ClassInfo_MS_Device_t* const MSInterfaceInf
                return false;
        }
 
                return false;
        }
 

-       Endpoint_Write_Stream_LE(&InquiryData, BytesTransferred, NO_STREAM_CALLBACK);
-
-       uint8_t PadBytes[AllocationLength - BytesTransferred];
+       Endpoint_Write_Stream_LE(&InquiryData, BytesTransferred, NULL);

 
        /* Pad out remaining bytes with 0x00 */
 
        /* Pad out remaining bytes with 0x00 */

-       Endpoint_Write_Stream_LE(&PadBytes, sizeof(PadBytes), NO_STREAM_CALLBACK);
+       Endpoint_Null_Stream((AllocationLength - BytesTransferred), NULL);

 
        /* Finalize the stream transfer to send the last packet */
        Endpoint_ClearIN();
 
        /* Finalize the stream transfer to send the last packet */
        Endpoint_ClearIN();


@@ -192,12 +192,10 @@ static bool SCSI_Command_Inquiry(USB_ClassInfo_MS_Device_t* const MSInterfaceInf
 static bool SCSI_Command_Request_Sense(USB_ClassInfo_MS_Device_t* const MSInterfaceInfo)
 {
        uint8_t  AllocationLength = MSInterfaceInfo->State.CommandBlock.SCSICommandData[4];
 static bool SCSI_Command_Request_Sense(USB_ClassInfo_MS_Device_t* const MSInterfaceInfo)
 {
        uint8_t  AllocationLength = MSInterfaceInfo->State.CommandBlock.SCSICommandData[4];

-       uint8_t  BytesTransferred = (AllocationLength < sizeof(SenseData))? AllocationLength : sizeof(SenseData);
-
-       uint8_t PadBytes[AllocationLength - BytesTransferred];
+       uint8_t  BytesTransferred = MIN(AllocationLength, sizeof(SenseData));

 
 

-       Endpoint_Write_Stream_LE(&SenseData, BytesTransferred, NO_STREAM_CALLBACK);
-       Endpoint_Write_Stream_LE(&PadBytes, sizeof(PadBytes), NO_STREAM_CALLBACK);
+       Endpoint_Write_Stream_LE(&SenseData, BytesTransferred, NULL);
+       Endpoint_Null_Stream((AllocationLength - BytesTransferred), NULL);

        Endpoint_ClearIN();
 
        /* Succeed the command and update the bytes transferred counter */
        Endpoint_ClearIN();
 
        /* Succeed the command and update the bytes transferred counter */


@@ -218,8 +216,8 @@ static bool SCSI_Command_Read_Capacity_10(USB_ClassInfo_MS_Device_t* const MSInt
        uint32_t LastBlockAddressInLUN = (VIRTUAL_MEMORY_BLOCKS - 1);
        uint32_t MediaBlockSize        = VIRTUAL_MEMORY_BLOCK_SIZE;
 
        uint32_t LastBlockAddressInLUN = (VIRTUAL_MEMORY_BLOCKS - 1);
        uint32_t MediaBlockSize        = VIRTUAL_MEMORY_BLOCK_SIZE;
 

-       Endpoint_Write_Stream_BE(&LastBlockAddressInLUN, sizeof(LastBlockAddressInLUN), NO_STREAM_CALLBACK);
-       Endpoint_Write_Stream_BE(&MediaBlockSize, sizeof(MediaBlockSize), NO_STREAM_CALLBACK);
+       Endpoint_Write_Stream_BE(&LastBlockAddressInLUN, sizeof(LastBlockAddressInLUN), NULL);
+       Endpoint_Write_Stream_BE(&MediaBlockSize, sizeof(MediaBlockSize), NULL);

        Endpoint_ClearIN();
 
        /* Succeed the command and update the bytes transferred counter */
        Endpoint_ClearIN();
 
        /* Succeed the command and update the bytes transferred counter */


@@ -281,6 +279,17 @@ static bool SCSI_Command_ReadWrite_10(USB_ClassInfo_MS_Device_t* const MSInterfa
        uint32_t BlockAddress;
        uint16_t TotalBlocks;
 
        uint32_t BlockAddress;
        uint16_t TotalBlocks;
 

+       /* Check if the disk is write protected or not */
+       if ((IsDataRead == DATA_WRITE) && DISK_READ_ONLY)
+       {
+               /* Block address is invalid, update SENSE key and return command fail */
+               SCSI_SET_SENSE(SCSI_SENSE_KEY_DATA_PROTECT,
+                              SCSI_ASENSE_WRITE_PROTECTED,
+                              SCSI_ASENSEQ_NO_QUALIFIER);
+
+               return false;
+       }
+

        /* Load in the 32-bit block address (SCSI uses big-endian, so have to reverse the byte order) */
        BlockAddress = SwapEndian_32(*(uint32_t*)&MSInterfaceInfo->State.CommandBlock.SCSICommandData[2]);
 
        /* Load in the 32-bit block address (SCSI uses big-endian, so have to reverse the byte order) */
        BlockAddress = SwapEndian_32(*(uint32_t*)&MSInterfaceInfo->State.CommandBlock.SCSICommandData[2]);
 


@@ -310,3 +319,25 @@ static bool SCSI_Command_ReadWrite_10(USB_ClassInfo_MS_Device_t* const MSInterfa
        return true;
 }
 
        return true;
 }
 

+/** Command processing for an issued SCSI MODE SENSE (6) command. This command returns various informational pages about
+ *  the SCSI device, as well as the device's Write Protect status.
+ *
+ *  \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_ModeSense_6(USB_ClassInfo_MS_Device_t* const MSInterfaceInfo)
+{
+       /* Send an empty header response with the Write Protect flag status */
+       Endpoint_Write_8(0x00);
+       Endpoint_Write_8(0x00);
+       Endpoint_Write_8(DISK_READ_ONLY ? 0x80 : 0x00);
+       Endpoint_Write_8(0x00);
+       Endpoint_ClearIN();
+
+       /* Update the bytes transferred counter and succeed the command */
+       MSInterfaceInfo->State.CommandBlock.DataTransferLength -= 4;
+
+       return true;
+}
+