X-Git-Url: http://git.linex4red.de/pub/USBasp.git/blobdiff_plain/4f114e576694b6b49931d5f14874df6c361d4267..f555ad7ced743a19eb1eefaf5eaf536fcbe58d80:/Projects/TempDataLogger/Lib/SCSI.c diff --git a/Projects/TempDataLogger/Lib/SCSI.c b/Projects/TempDataLogger/Lib/SCSI.c index a98731957..31f62eef2 100644 --- a/Projects/TempDataLogger/Lib/SCSI.c +++ b/Projects/TempDataLogger/Lib/SCSI.c @@ -1,21 +1,21 @@ /* LUFA Library - Copyright (C) Dean Camera, 2010. - + Copyright (C) Dean Camera, 2011. + dean [at] fourwalledcubicle [dot] com - www.fourwalledcubicle.com + www.lufa-lib.org */ /* - Copyright 2010 Dean Camera (dean [at] fourwalledcubicle [dot] com) + Copyright 2011 Dean Camera (dean [at] fourwalledcubicle [dot] com) - Permission to use, copy, modify, distribute, and sell this + Permission to use, copy, modify, distribute, and sell this software and its documentation for any purpose is hereby granted - without fee, provided that the above copyright notice appear in + without fee, provided that the above copyright notice appear in all copies and that both that the copyright notice and this - permission notice and warranty disclaimer appear in supporting - documentation, and that the name of the author not be used in - advertising or publicity pertaining to distribution of the + permission notice and warranty disclaimer appear in supporting + documentation, and that the name of the author not be used in + advertising or publicity pertaining to distribution of the software without specific, written prior permission. The author disclaim all warranties with regard to this @@ -34,29 +34,29 @@ * devices use a thin "Bulk-Only Transport" protocol for issuing commands and status information, * which wrap around standard SCSI device commands for controlling the actual storage medium. */ - + #define INCLUDE_FROM_SCSI_C #include "SCSI.h" /** 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 = +SCSI_Inquiry_Response_t InquiryData = { .DeviceType = DEVICE_TYPE_BLOCK, .PeripheralQualifier = 0, - + .Removable = true, - + .Version = 0, - + .ResponseDataFormat = 2, .NormACA = false, .TrmTsk = false, .AERC = false, .AdditionalLength = 0x1F, - + .SoftReset = false, .CmdQue = false, .Linked = false, @@ -64,7 +64,7 @@ SCSI_Inquiry_Response_t InquiryData = .WideBus16Bit = false, .WideBus32Bit = false, .RelAddr = false, - + .VendorID = "LUFA", .ProductID = "Dataflash Disk", .RevisionID = {'0','.','0','0'}, @@ -96,13 +96,13 @@ bool SCSI_DecodeSCSICommand(USB_ClassInfo_MS_Device_t* const MSInterfaceInfo) switch (MSInterfaceInfo->State.CommandBlock.SCSICommandData[0]) { case SCSI_CMD_INQUIRY: - CommandSuccess = SCSI_Command_Inquiry(MSInterfaceInfo); + CommandSuccess = SCSI_Command_Inquiry(MSInterfaceInfo); break; case SCSI_CMD_REQUEST_SENSE: CommandSuccess = SCSI_Command_Request_Sense(MSInterfaceInfo); break; case SCSI_CMD_READ_CAPACITY_10: - CommandSuccess = SCSI_Command_Read_Capacity_10(MSInterfaceInfo); + CommandSuccess = SCSI_Command_Read_Capacity_10(MSInterfaceInfo); break; case SCSI_CMD_SEND_DIAGNOSTIC: CommandSuccess = SCSI_Command_Send_Diagnostic(MSInterfaceInfo); @@ -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_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: @@ -134,7 +137,7 @@ bool SCSI_DecodeSCSICommand(USB_ClassInfo_MS_Device_t* const MSInterfaceInfo) SCSI_SET_SENSE(SCSI_SENSE_KEY_GOOD, SCSI_ASENSE_NO_ADDITIONAL_INFORMATION, SCSI_ASENSEQ_NO_QUALIFIER); - + return true; } @@ -165,20 +168,18 @@ static bool SCSI_Command_Inquiry(USB_ClassInfo_MS_Device_t* const MSInterfaceInf 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 */ - 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(); /* Succeed the command and update the bytes transferred counter */ MSInterfaceInfo->State.CommandBlock.DataTransferLength -= BytesTransferred; - + return true; } @@ -193,11 +194,9 @@ static bool SCSI_Command_Request_Sense(USB_ClassInfo_MS_Device_t* const MSInterf { uint8_t AllocationLength = MSInterfaceInfo->State.CommandBlock.SCSICommandData[4]; uint8_t BytesTransferred = (AllocationLength < sizeof(SenseData))? AllocationLength : sizeof(SenseData); - - uint8_t PadBytes[AllocationLength - BytesTransferred]; - 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 */ @@ -218,13 +217,13 @@ 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; - 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 */ MSInterfaceInfo->State.CommandBlock.DataTransferLength -= 8; - + return true; } @@ -248,21 +247,21 @@ static bool SCSI_Command_Send_Diagnostic(USB_ClassInfo_MS_Device_t* const MSInte return false; } - + /* Check to see if all attached Dataflash ICs are functional */ if (!(DataflashManager_CheckDataflashOperation())) { /* Update SENSE key with a hardware error condition and return command fail */ SCSI_SET_SENSE(SCSI_SENSE_KEY_HARDWARE_ERROR, SCSI_ASENSE_NO_ADDITIONAL_INFORMATION, - SCSI_ASENSEQ_NO_QUALIFIER); - + SCSI_ASENSEQ_NO_QUALIFIER); + return false; } - + /* Succeed the command and update the bytes transferred counter */ MSInterfaceInfo->State.CommandBlock.DataTransferLength = 0; - + return true; } @@ -280,13 +279,24 @@ static bool SCSI_Command_ReadWrite_10(USB_ClassInfo_MS_Device_t* const MSInterfa { 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 16-bit total blocks (SCSI uses big-endian, so have to reverse the byte order) */ TotalBlocks = SwapEndian_16(*(uint16_t*)&MSInterfaceInfo->State.CommandBlock.SCSICommandData[7]); - + /* Check if the block address is outside the maximum allowable value for the LUN */ if (BlockAddress >= VIRTUAL_MEMORY_BLOCKS) { @@ -306,6 +316,28 @@ static bool SCSI_Command_ReadWrite_10(USB_ClassInfo_MS_Device_t* const MSInterfa /* Update the bytes transferred counter and succeed the command */ MSInterfaceInfo->State.CommandBlock.DataTransferLength -= ((uint32_t)TotalBlocks * VIRTUAL_MEMORY_BLOCK_SIZE); - + + 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_Byte(0x00); + Endpoint_Write_Byte(0x00); + Endpoint_Write_Byte(DISK_READ_ONLY ? 0x80 : 0x00); + Endpoint_Write_Byte(0x00); + Endpoint_ClearIN(); + + /* Update the bytes transferred counter and succeed the command */ + MSInterfaceInfo->State.CommandBlock.DataTransferLength -= 4; + return true; }