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Diffstat (limited to 'Demos/MassStorageHost/MassStoreCommands.h')
| -rw-r--r-- | Demos/MassStorageHost/MassStoreCommands.h | 176 |
1 files changed, 176 insertions, 0 deletions
diff --git a/Demos/MassStorageHost/MassStoreCommands.h b/Demos/MassStorageHost/MassStoreCommands.h new file mode 100644 index 000000000..d3ddfeeb9 --- /dev/null +++ b/Demos/MassStorageHost/MassStoreCommands.h @@ -0,0 +1,176 @@ +/*
+ 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 Statuc 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 transfered */
+ 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 explitic error codes for the last issued command). For details of the
+ * structure contents, refer to the SCSI specifications.
+ */
+ typedef struct
+ {
+ unsigned int ReponseCode : 7;
+ unsigned int Valid : 1;
+
+ uint8_t SegmentNumber;
+
+ unsigned int SenseKey : 4;
+ unsigned int _RESERVED1 : 1;
+ unsigned int ILI : 1;
+ unsigned int EOM : 1;
+ unsigned int 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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