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Copy existing Host mode demos to new ClassDriver and LowLevel subfolders.

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Dean Camera 2009-06-05 07:56:39 +00:00
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685
Demos/Host/ClassDriver/MassStorageHost/Lib/MassStoreCommands.c Normal file
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/*
LUFA Library
Copyright (C) Dean Camera, 2009.
dean [at] fourwalledcubicle [dot] com
www.fourwalledcubicle.com
*/
/*
Copyright 2009 Dean Camera (dean [at] fourwalledcubicle [dot] com)
Permission to use, copy, modify, and distribute this software
and its documentation for any purpose and without fee is hereby
granted, 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
software without specific, written prior permission.
The author disclaim all warranties with regard to this
software, including all implied warranties of merchantability
and fitness. In no event shall the author be liable for any
special, indirect or consequential damages or any damages
whatsoever resulting from loss of use, data or profits, whether
in an action of contract, negligence or other tortious action,
arising out of or in connection with the use or performance of
this software.
*/
/** \file
*
* Mass Storage Device commands, to issue MSD commands to the device for
* reading device status, capacity, and other characteristics. This file
* also contains block read and write functions, so that device blocks
* can be read and written. In general, these functions would be chained
* to a FAT library to give file-level access to an attached device's contents.
*
* \note Many Mass Storage devices on the market are non-compliant to the
* specifications and thus can prove difficult to interface with. It
* may be necessary to retry the functions in the module several times
* after they have returned and error to successfully send the command
* to the device. Some devices may also need to have the stream function
* timeout period extended beyond 100ms (some badly designed devices exceeding
* 1.5 seconds occasionally) by defining USB_STREAM_TIMEOUT_MS to a
* larger value in the project makefile and passing it to the compiler
* via the -D switch.
*/
#define INCLUDE_FROM_MASSSTORE_COMMANDS_C
#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.
*/
static uint32_t MassStore_Tag = 1;
/** Routine to send the current CBW to the device, and increment the Tag value as needed.
*
* \return A value from the Pipe_Stream_RW_ErrorCodes_t enum
*/
static uint8_t MassStore_SendCommand(void)
{
uint8_t ErrorCode = PIPE_RWSTREAM_NoError;
/* Each transmission should have a unique tag value, excluding values 0 and 0xFFFFFFFF */
if (++MassStore_Tag == 0xFFFFFFFF)
MassStore_Tag = 1;
/* Select the OUT data pipe for CBW transmission */
Pipe_SelectPipe(MASS_STORE_DATA_OUT_PIPE);
Pipe_Unfreeze();
/* Write the CBW command to the OUT pipe */
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();
while(!(Pipe_IsOUTReady()));
/* Freeze pipe after use */
Pipe_Freeze();
return PIPE_RWSTREAM_NoError;
}
/** Waits until the attached device is ready to accept data following a CBW, checking
* to ensure that the device has not stalled the transaction.
*
* \return A value from the Pipe_Stream_RW_ErrorCodes_t enum
*/
static uint8_t MassStore_WaitForDataReceived(void)
{
uint16_t TimeoutMSRem = COMMAND_DATA_TIMEOUT_MS;
/* Unfreeze the OUT pipe so that it can be checked */
Pipe_SelectPipe(MASS_STORE_DATA_OUT_PIPE);
Pipe_Unfreeze();
/* Select the IN data pipe for data reception */
Pipe_SelectPipe(MASS_STORE_DATA_IN_PIPE);
Pipe_Unfreeze();
/* Wait until data received in the IN pipe */
while (!(Pipe_IsINReceived()))
{
/* Check to see if a new frame has been issued (1ms elapsed) */
if (FrameElapsed)
{
/* Clear the flag and decrement the timeout period counter */
FrameElapsed = false;
TimeoutMSRem--;
/* Check to see if the timeout period for the command has elapsed */
if (!(TimeoutMSRem))
return PIPE_RWSTREAM_Timeout;
}
Pipe_SelectPipe(MASS_STORE_DATA_OUT_PIPE);
/* Check if pipe stalled (command failed by device) */
if (Pipe_IsStalled())
{
/* Clear the stall condition on the OUT pipe */
MassStore_ClearPipeStall(MASS_STORE_DATA_OUT_PIPE);
return PIPE_RWSTREAM_PipeStalled;
}
Pipe_SelectPipe(MASS_STORE_DATA_IN_PIPE);
/* Check if pipe stalled (command failed by device) */
if (Pipe_IsStalled())
{
/* Clear the stall condition on the IN pipe */
MassStore_ClearPipeStall(MASS_STORE_DATA_IN_PIPE);
return PIPE_RWSTREAM_PipeStalled;
}
/* Check to see if the device was disconnected, if so exit function */
if (!(USB_IsConnected))
return PIPE_RWSTREAM_DeviceDisconnected;
};
return PIPE_RWSTREAM_NoError;
}
/** Sends or receives the transaction's data stage to or from the attached device, reading or
* writing to the nominated buffer.
*
* \param 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)
{
uint8_t ErrorCode = PIPE_RWSTREAM_NoError;
uint16_t BytesRem = SCSICommandBlock.Header.DataTransferLength;
/* Check the direction of the SCSI command data stage */
if (SCSICommandBlock.Header.Flags & COMMAND_DIRECTION_DATA_IN)
{
/* Select the IN data pipe for data reception */
Pipe_SelectPipe(MASS_STORE_DATA_IN_PIPE);
Pipe_Unfreeze();
/* Read in the block data from the pipe */
if ((ErrorCode = Pipe_Read_Stream_LE(BufferPtr, BytesRem)) != PIPE_RWSTREAM_NoError)
return ErrorCode;
/* Acknowledge the packet */
Pipe_ClearIN();
}
else
{
/* Select the OUT data pipe for data transmission */
Pipe_SelectPipe(MASS_STORE_DATA_OUT_PIPE);
Pipe_Unfreeze();
/* Write the block data to the pipe */
if ((ErrorCode = Pipe_Write_Stream_LE(BufferPtr, BytesRem)) != PIPE_RWSTREAM_NoError)
return ErrorCode;
/* Acknowledge the packet */
Pipe_ClearOUT();
while (!(Pipe_IsOUTReady()));
}
/* Freeze used pipe after use */
Pipe_Freeze();
return PIPE_RWSTREAM_NoError;
}
/** Routine to receive the current CSW from the device.
*
* \return A value from the Pipe_Stream_RW_ErrorCodes_t enum
*/
static uint8_t MassStore_GetReturnedStatus(void)
{
uint8_t ErrorCode = PIPE_RWSTREAM_NoError;
/* If an error in the command ocurred, abort */
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();
/* Load in the CSW from the attached device */
if ((ErrorCode = Pipe_Read_Stream_LE(&SCSICommandStatus, sizeof(CommandStatusWrapper_t))) != PIPE_RWSTREAM_NoError)
return ErrorCode;
/* Clear the data ready for next reception */
Pipe_ClearIN();
/* Freeze the IN pipe after use */
Pipe_Freeze();
return PIPE_RWSTREAM_NoError;
}
/** Clears the stall condition in the attached device on the nominated endpoint number.
*
* \param EndpointNum Endpoint number in the attached device whose stall condition is to be cleared
*
* \return A value from the USB_Host_SendControlErrorCodes_t enum
*/
uint8_t MassStore_ClearPipeStall(const uint8_t EndpointNum)
{
USB_ControlRequest = (USB_Request_Header_t)
{
.bmRequestType = (REQDIR_HOSTTODEVICE | REQTYPE_STANDARD | REQREC_ENDPOINT),
.bRequest = REQ_ClearFeature,
.wValue = FEATURE_ENDPOINT_HALT,
.wIndex = EndpointNum,
.wLength = 0,
};
/* Select the control pipe for the request transfer */
Pipe_SelectPipe(PIPE_CONTROLPIPE);
return USB_Host_SendControlRequest(NULL);
}
/** 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
*/
uint8_t MassStore_MassStorageReset(void)
{
USB_ControlRequest = (USB_Request_Header_t)
{
.bmRequestType = (REQDIR_HOSTTODEVICE | REQTYPE_CLASS | REQREC_INTERFACE),
.bRequest = REQ_MassStorageReset,
.wValue = 0,
.wIndex = 0,
.wLength = 0,
};
/* Select the control pipe for the request transfer */
Pipe_SelectPipe(PIPE_CONTROLPIPE);
return USB_Host_SendControlRequest(NULL);
}
/** Issues a Mass Storage class specific request to determine the index of the highest numbered Logical
* Unit in the attached device.
*
* \param MaxLUNIndex Pointer to the location that the maximum LUN index value should be stored
*
* \return A value from the USB_Host_SendControlErrorCodes_t enum
*/
uint8_t MassStore_GetMaxLUN(uint8_t* const MaxLUNIndex)
{
uint8_t ErrorCode;
USB_ControlRequest = (USB_Request_Header_t)
{
.bmRequestType = (REQDIR_DEVICETOHOST | REQTYPE_CLASS | REQREC_INTERFACE),
.bRequest = REQ_GetMaxLUN,
.wValue = 0,
.wIndex = 0,
.wLength = 1,
};
/* Select the control pipe for the request transfer */
Pipe_SelectPipe(PIPE_CONTROLPIPE);
if ((ErrorCode = USB_Host_SendControlRequest(MaxLUNIndex)) == HOST_SENDCONTROL_SetupStalled)
{
/* Clear the pipe stall */
Pipe_ClearStall();
/* Some faulty Mass Storage devices don't implement the GET_MAX_LUN request, so assume a single LUN */
*MaxLUNIndex = 0;
}
return ErrorCode;
}
/** Issues a SCSI Request Sense command to the attached device, to determine the current SCSI sense information. This
* gives error codes for the last issued SCSI command to the device.
*
* \param LUNIndex Index of the LUN inside the device the command is being addressed to
* \param 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
*/
uint8_t MassStore_RequestSense(const uint8_t LUNIndex, const SCSI_Request_Sense_Response_t* const SensePtr)
{
uint8_t ReturnCode = PIPE_RWSTREAM_NoError;
/* Create a CBW with a SCSI command to issue REQUEST SENSE command */
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
},
.SCSICommandData =
{
SCSI_CMD_REQUEST_SENSE,
0x00, // Reserved
0x00, // Reserved
0x00, // Reserved
sizeof(SCSI_Request_Sense_Response_t), // Allocation Length
0x00 // Unused (control)
}
};
/* 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;
}
/* Read the returned sense data into the buffer */
if ((ReturnCode = MassStore_SendReceiveData((uint8_t*)SensePtr)) != PIPE_RWSTREAM_NoError)
{
Pipe_Freeze();
return ReturnCode;
}
/* Read in the returned CSW from the device */
if ((ReturnCode = MassStore_GetReturnedStatus()) != PIPE_RWSTREAM_NoError)
{
Pipe_Freeze();
return ReturnCode;
}
return PIPE_RWSTREAM_NoError;
}
/** Issues a SCSI Device Block Read command to the attached device, to read in one or more data blocks from the
* storage medium into a buffer.
*
* \param LUNIndex Index of the LUN inside the device the command is being addressed to
* \param BlockAddress Start block address to read from
* \param Blocks Number of blocks to read from the device
* \param BlockSize Size in bytes of each block to read
* \param 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
*/
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;
/* Create a CBW with a SCSI command to read in the given blocks from the device */
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 =
{
SCSI_CMD_READ_10,
0x00, // Unused (control bits, all off)
(BlockAddress >> 24), // MSB of Block Address
(BlockAddress >> 16),
(BlockAddress >> 8),
(BlockAddress & 0xFF), // LSB of Block Address
0x00, // Unused (reserved)
0x00, // MSB of Total Blocks to Read
Blocks, // LSB of Total Blocks to Read
0x00 // Unused (control)
}
};
/* 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;
}
/* Read the returned block data into the buffer */
if ((ReturnCode = MassStore_SendReceiveData(BufferPtr)) != PIPE_RWSTREAM_NoError)
{
Pipe_Freeze();
return ReturnCode;
}
/* Read in the returned CSW from the device */
if ((ReturnCode = MassStore_GetReturnedStatus()) != PIPE_RWSTREAM_NoError)
{
Pipe_Freeze();
return ReturnCode;
}
return PIPE_RWSTREAM_NoError;
}
/** Issues a SCSI Device Block Write command to the attached device, to write one or more data blocks to the
* storage medium from a buffer.
*
* \param LUNIndex Index of the LUN inside the device the command is being addressed to
* \param BlockAddress Start block address to write to
* \param Blocks Number of blocks to write to in the device
* \param BlockSize Size in bytes of each block to write
* \param 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
*/
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;
/* Create a CBW with a SCSI command to write the given blocks to the device */
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 =
{
SCSI_CMD_WRITE_10,
0x00, // Unused (control bits, all off)
(BlockAddress >> 24), // MSB of Block Address
(BlockAddress >> 16),
(BlockAddress >> 8),
(BlockAddress & 0xFF), // LSB of Block Address
0x00, // Unused (reserved)
0x00, // MSB of Total Blocks to Write
Blocks, // LSB of Total Blocks to Write
0x00 // Unused (control)
}
};
/* Send SCSI command to the attached device */
MassStore_SendCommand();
/* Write the data to the device from the buffer */
if ((ReturnCode = MassStore_SendReceiveData(BufferPtr)) != PIPE_RWSTREAM_NoError)
{
Pipe_Freeze();
return ReturnCode;
}
/* Read in the returned CSW from the device */
if ((ReturnCode = MassStore_GetReturnedStatus()) != PIPE_RWSTREAM_NoError)
{
Pipe_Freeze();
return ReturnCode;
}
return PIPE_RWSTREAM_NoError;
}
/** Issues a SCSI Device Test Unit Ready command to the attached device, to determine if the device is ready to accept
* other commands.
*
* \param 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
*/
uint8_t MassStore_TestUnitReady(const uint8_t LUNIndex)
{
uint8_t ReturnCode = PIPE_RWSTREAM_NoError;
/* Create a CBW with a SCSI command to issue TEST UNIT READY command */
SCSICommandBlock = (CommandBlockWrapper_t)
{
.Header =
{
.Signature = CBW_SIGNATURE,
.Tag = MassStore_Tag,
.DataTransferLength = 0,
.Flags = COMMAND_DIRECTION_DATA_IN,
.LUN = LUNIndex,
.SCSICommandLength = 6
},
.SCSICommandData =
{
SCSI_CMD_TEST_UNIT_READY,
0x00, // Reserved
0x00, // Reserved
0x00, // Reserved
0x00, // Reserved
0x00 // Unused (control)
}
};
/* Send SCSI command to the attached device */
MassStore_SendCommand();
/* Read in the returned CSW from the device */
if ((ReturnCode = MassStore_GetReturnedStatus()) != PIPE_RWSTREAM_NoError)
{
Pipe_Freeze();
return ReturnCode;
}
return PIPE_RWSTREAM_NoError;
}
/** Issues a SCSI Device Read Capacity command to the attached device, to determine the capacity of the
* given Logical Unit within the device.
*
* \param LUNIndex Index of the LUN inside the device the command is being addressed to
* \param CapacityPtr Device capacity structure where the capacity data is to be stored
*
* \return A value from the Pipe_Stream_RW_ErrorCodes_t enum
*/
uint8_t MassStore_ReadCapacity(const uint8_t LUNIndex, SCSI_Capacity_t* const CapacityPtr)
{
uint8_t ReturnCode = PIPE_RWSTREAM_NoError;
/* Create a CBW with a SCSI command to issue READ CAPACITY command */
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 =
{
SCSI_CMD_READ_CAPACITY_10,
0x00, // Reserved
0x00, // MSB of Logical block address
0x00,
0x00,
0x00, // LSB of Logical block address
0x00, // Reserved
0x00, // Reserved
0x00, // Partial Medium Indicator
0x00 // Unused (control)
}
};
/* 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;
}
/* Read the returned capacity data into the buffer */
if ((ReturnCode = MassStore_SendReceiveData(CapacityPtr)) != PIPE_RWSTREAM_NoError)
{
Pipe_Freeze();
return ReturnCode;
}
/* 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)
{
Pipe_Freeze();
return ReturnCode;
}
return PIPE_RWSTREAM_NoError;
}
/** Issues a SCSI Device Prevent/Allow Medium Removal command to the attached device, to lock the physical media from
* being removed. This is a legacy command for SCSI disks with removable storage (such as ZIP disks), but should still
* be issued before the first read or write command is sent.
*
* \param LUNIndex Index of the LUN inside the device the command is being addressed to
* \param 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
*/
uint8_t MassStore_PreventAllowMediumRemoval(const uint8_t LUNIndex, const bool PreventRemoval)
{
uint8_t ReturnCode = PIPE_RWSTREAM_NoError;
/* Create a CBW with a SCSI command to issue PREVENT ALLOW MEDIUM REMOVAL command */
SCSICommandBlock = (CommandBlockWrapper_t)
{
.Header =
{
.Signature = CBW_SIGNATURE,
.Tag = MassStore_Tag,
.DataTransferLength = 0,
.Flags = COMMAND_DIRECTION_DATA_OUT,
.LUN = LUNIndex,
.SCSICommandLength = 6
},
.SCSICommandData =
{
SCSI_CMD_PREVENT_ALLOW_MEDIUM_REMOVAL,
0x00, // Reserved
0x00, // Reserved
PreventRemoval, // Prevent flag
0x00, // Reserved
0x00 // Unused (control)
}
};
/* Send SCSI command to the attached device */
MassStore_SendCommand();
/* Read in the returned CSW from the device */
if ((ReturnCode = MassStore_GetReturnedStatus()))
{
Pipe_Freeze();
return ReturnCode;
}
return PIPE_RWSTREAM_NoError;
}

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Demos/Host/ClassDriver/MassStorageHost/Lib/MassStoreCommands.h Normal file
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/*
LUFA Library
Copyright (C) Dean Camera, 2009.
dean [at] fourwalledcubicle [dot] com
www.fourwalledcubicle.com
*/
/*
Copyright 2009 Dean Camera (dean [at] fourwalledcubicle [dot] com)
Permission to use, copy, modify, and distribute this software
and its documentation for any purpose and without fee is hereby
granted, 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
software without specific, written prior permission.
The author disclaim all warranties with regard to this
software, including all implied warranties of merchantability
and fitness. In no event shall the author be liable for any
special, indirect or consequential damages or any damages
whatsoever resulting from loss of use, data or profits, whether
in an action of contract, negligence or other tortious action,
arising out of or in connection with the use or performance of
this software.
*/
/** \file
*
* Header file for MassStoreCommands.c.
*/
#ifndef _MASS_STORE_COMMANDS_H_
#define _MASS_STORE_COMMANDS_H_
/* Includes: */
#include <avr/io.h>
#include "MassStorageHost.h"
#include "SCSI_Codes.h"
#include <LUFA/Drivers/USB/USB.h> // USB Functionality
/* Macros: */
/** Class specific request to reset the Mass Storage interface of the attached device */
#define REQ_MassStorageReset 0xFF
/** Class specific request to retrieve the maximum Logical Unit Number (LUN) index of the attached device */
#define REQ_GetMaxLUN 0xFE
/** Command Block Wrapper signature byte, for verification of valid CBW blocks */
#define CBW_SIGNATURE 0x43425355UL
/** Command Static Wrapper signature byte, for verification of valid CSW blocks */
#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)
/** Data direction mask for the Flags field of a CBW, indicating Device-to-Host transfer direction */
#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 500
/** Pipe number of the Mass Storage data IN pipe */
#define MASS_STORE_DATA_IN_PIPE 1
/** Pipe number of the Mass Storage data OUT pipe */
#define MASS_STORE_DATA_OUT_PIPE 2
/* Type defines: */
/** Type define for a Mass Storage class Command Block Wrapper, used to wrap SCSI
* commands for transport over the USB bulk endpoints to the device.
*/
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 */
} CommandBlockWrapper_t;
/** Type define for a Mass Storage class Command Status Wrapper, used to wrap SCSI
* responses for transport over the USB bulk endpoints from the device.
*/
typedef struct
{
uint32_t Signature; /**< Command status signature, always equal to CSW_SIGNATURE */
uint32_t Tag; /**< Current CBW tag, to positively associate a CBW with a CSW */
uint32_t DataTransferResidue; /**< Length of data not transferred */
uint8_t Status; /**< Command status, a value from the MassStorageHost_CommandStatusCodes_t enum */
} CommandStatusWrapper_t;
/** Type define for a SCSI Sense structure. Structures of this type are filled out by the
* device via the MassStore_RequestSense() function, indicating the current sense data of the
* device (giving explicit error codes for the last issued command). For details of the
* structure contents, refer to the SCSI specifications.
*/
typedef struct
{
uint8_t ReponseCode;
uint8_t SegmentNumber;
unsigned char SenseKey : 4;
unsigned char _RESERVED1 : 1;
unsigned char ILI : 1;
unsigned char EOM : 1;
unsigned char FileMark : 1;
uint8_t Information[4];
uint8_t AdditionalLength;
uint8_t CmdSpecificInformation[4];
uint8_t AdditionalSenseCode;
uint8_t AdditionalSenseQualifier;
uint8_t FieldReplaceableUnitCode;
uint8_t SenseKeySpecific[3];
} SCSI_Request_Sense_Response_t;
/** SCSI capacity structure, to hold the total capacity of the device in both the number
* of blocks in the current LUN, and the size of each block. This structure is filled by
* the device when the MassStore_ReadCapacity() function is called.
*/
typedef struct
{
uint32_t Blocks; /**< Number of blocks in the addressed LUN of the device */
uint32_t BlockSize; /**< Number of bytes in each block in the addressed LUN */
} SCSI_Capacity_t;
/* Enums: */
/** CSW status return codes, indicating the overall status of the issued CBW */
enum MassStorageHost_CommandStatusCodes_t
{
Command_Pass = 0, /**< Command completed successfully */
Command_Fail = 1, /**< Command failed to complete successfully */
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_WaitForDataReceived(void);
static uint8_t MassStore_SendReceiveData(void* BufferPtr) ATTR_NON_NULL_PTR_ARG(1);
static uint8_t MassStore_GetReturnedStatus(void);
#endif
uint8_t MassStore_ClearPipeStall(const uint8_t EndpointNum);
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)
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);
uint8_t MassStore_WriteDeviceBlock(const uint8_t LUNIndex, const uint32_t BlockAddress,
const uint8_t Blocks, const uint16_t BlockSize, void* BufferPtr) ATTR_NON_NULL_PTR_ARG(5);
uint8_t MassStore_ReadCapacity(const uint8_t LUNIndex, SCSI_Capacity_t* const CapacityPtr)
ATTR_NON_NULL_PTR_ARG(2);
uint8_t MassStore_TestUnitReady(const uint8_t LUNIndex);
uint8_t MassStore_PreventAllowMediumRemoval(const uint8_t LUNIndex, const bool PreventRemoval);
#endif

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@ -0,0 +1,85 @@
/*
LUFA Library
Copyright (C) Dean Camera, 2009.
dean [at] fourwalledcubicle [dot] com
www.fourwalledcubicle.com
*/
/*
Copyright 2009 Dean Camera (dean [at] fourwalledcubicle [dot] com)
Permission to use, copy, modify, and distribute this software
and its documentation for any purpose and without fee is hereby
granted, 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
software without specific, written prior permission.
The author disclaim all warranties with regard to this
software, including all implied warranties of merchantability
and fitness. In no event shall the author be liable for any
special, indirect or consequential damages or any damages
whatsoever resulting from loss of use, data or profits, whether
in an action of contract, negligence or other tortious action,
arising out of or in connection with the use or performance of
this software.
*/
/** \file
*
* Header containing macros for possible SCSI commands and SENSE data. Refer to
* the SCSI standard documentation for more information on each SCSI command and
* the SENSE data.
*/
#ifndef _SCSI_CODES_H_
#define _SCSI_CODES_H_
/* Macros: */
#define SCSI_CMD_INQUIRY 0x12
#define SCSI_CMD_REQUEST_SENSE 0x03
#define SCSI_CMD_TEST_UNIT_READY 0x00
#define SCSI_CMD_READ_CAPACITY_10 0x25
#define SCSI_CMD_SEND_DIAGNOSTIC 0x1D
#define SCSI_CMD_PREVENT_ALLOW_MEDIUM_REMOVAL 0x1E
#define SCSI_CMD_WRITE_10 0x2A
#define SCSI_CMD_READ_10 0x28
#define SCSI_CMD_WRITE_6 0x0A
#define SCSI_CMD_READ_6 0x08
#define SCSI_CMD_VERIFY_10 0x2F
#define SCSI_CMD_MODE_SENSE_6 0x1A
#define SCSI_CMD_MODE_SENSE_10 0x5A
#define SCSI_SENSE_KEY_GOOD 0x00
#define SCSI_SENSE_KEY_RECOVERED_ERROR 0x01
#define SCSI_SENSE_KEY_NOT_READY 0x02
#define SCSI_SENSE_KEY_MEDIUM_ERROR 0x03
#define SCSI_SENSE_KEY_HARDWARE_ERROR 0x04
#define SCSI_SENSE_KEY_ILLEGAL_REQUEST 0x05
#define SCSI_SENSE_KEY_UNIT_ATTENTION 0x06
#define SCSI_SENSE_KEY_DATA_PROTECT 0x07
#define SCSI_SENSE_KEY_BLANK_CHECK 0x08
#define SCSI_SENSE_KEY_VENDOR_SPECIFIC 0x09
#define SCSI_SENSE_KEY_COPY_ABORTED 0x0A
#define SCSI_SENSE_KEY_ABORTED_COMMAND 0x0B
#define SCSI_SENSE_KEY_VOLUME_OVERFLOW 0x0D
#define SCSI_SENSE_KEY_MISCOMPARE 0x0E
#define SCSI_ASENSE_NO_ADDITIONAL_INFORMATION 0x00
#define SCSI_ASENSE_LOGICAL_UNIT_NOT_READY 0x04
#define SCSI_ASENSE_INVALID_FIELD_IN_CDB 0x24
#define SCSI_ASENSE_WRITE_PROTECTED 0x27
#define SCSI_ASENSE_FORMAT_ERROR 0x31
#define SCSI_ASENSE_INVALID_COMMAND 0x20
#define SCSI_ASENSE_LOGICAL_BLOCK_ADDRESS_OUT_OF_RANGE 0x21
#define SCSI_ASENSE_MEDIUM_NOT_PRESENT 0x3A
#define SCSI_ASENSEQ_NO_QUALIFIER 0x00
#define SCSI_ASENSEQ_FORMAT_COMMAND_FAILED 0x01
#define SCSI_ASENSEQ_INITIALIZING_COMMAND_REQUIRED 0x02
#define SCSI_ASENSEQ_OPERATION_IN_PROGRESS 0x07
#endif