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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.
*/
/** \ingroup Group_USBClassMS
* @defgroup Group_USBClassMassStorageHost Mass Storage Class Host Mode Driver
*
* \section Sec_Dependencies Module Source Dependencies
* The following files must be built with any user project that uses this module:
* - LUFA/Drivers/USB/Class/Host/MassStorage.c
*
* \section Module Description
* Host Mode USB Class driver framework interface, for the Mass Storage USB Class driver.
*
* @{
*/
#ifndef __MS_CLASS_HOST_H__
#define __MS_CLASS_HOST_H__
/* Includes: */
#include "../../USB.h"
#include "../Common/MassStorage.h"
/* Enable C linkage for C++ Compilers: */
#if defined(__cplusplus)
extern "C" {
#endif
/* Public Interface - May be used in end-application: */
/* Macros: */
/** Error code for some Mass Storage Host functions, indicating a logical (and not hardware) error */
#define MS_ERROR_LOGICAL_CMD_FAILED 0x80
/* Type Defines: */
/** Class state structure. An instance of this structure should be made within the user application,
* and passed to each of the Mass Storage class driver functions as the MSInterfaceInfo parameter. This
* stores each Mass Storage interface's configuration and state information.
*/
typedef struct
{
const struct
{
uint8_t DataINPipeNumber; /**< Pipe number of the Mass Storage interface's IN data pipe */
bool DataINPipeDoubleBank; /** Indicates if the Mass Storage interface's IN data pipe should use double banking */
uint8_t DataOUTPipeNumber; /**< Pipe number of the Mass Storage interface's OUT data pipe */
bool DataOUTPipeDoubleBank; /** Indicates if the Mass Storage interface's OUT data pipe should use double banking */
} Config; /**< Config data for the USB class interface within the device. All elements in this section
* <b>must</b> be set or the interface will fail to enumerate and operate correctly.
*/
struct
{
bool IsActive; /**< Indicates if the current interface instance is connected to an attached device, valid
* after \ref MS_Host_ConfigurePipes() is called and the Host state machine is in the
* Configured state
*/
uint8_t InterfaceNumber; /**< Interface index of the Mass Storage interface within the attached device */
uint16_t DataINPipeSize; /**< Size in bytes of the Mass Storage interface's IN data pipe */
uint16_t DataOUTPipeSize; /**< Size in bytes of the Mass Storage interface's OUT data pipe */
uint32_t TransactionTag; /**< Current transaction tag for data synchronizing of packets */
} State; /**< State data for the USB class interface within the device. All elements in this section
* <b>may</b> be set to initial values, but may also be ignored to default to sane values when
* the interface is enumerated.
*/
} USB_ClassInfo_MS_Host_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 ResponseCode;
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;
/** Type define for a SCSI Inquiry structure. Structures of this type are filled out by the
* device via the MassStore_Inquiry() function, retrieving the attached device's information.
* For details of the structure contents, refer to the SCSI specifications.
*/
typedef struct
{
unsigned char DeviceType : 5;
unsigned char PeripheralQualifier : 3;
unsigned char _RESERVED1 : 7;
unsigned char Removable : 1;
uint8_t Version;
unsigned char ResponseDataFormat : 4;
unsigned char _RESERVED2 : 1;
unsigned char NormACA : 1;
unsigned char TrmTsk : 1;
unsigned char AERC : 1;
uint8_t AdditionalLength;
uint8_t _RESERVED3[2];
unsigned char SoftReset : 1;
unsigned char CmdQue : 1;
unsigned char _RESERVED4 : 1;
unsigned char Linked : 1;
unsigned char Sync : 1;
unsigned char WideBus16Bit : 1;
unsigned char WideBus32Bit : 1;
unsigned char RelAddr : 1;
uint8_t VendorID[8];
uint8_t ProductID[16];
uint8_t RevisionID[4];
} SCSI_Inquiry_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: */
enum MSHost_EnumerationFailure_ErrorCodes_t
{
MS_ENUMERROR_NoError = 0, /**< Configuration Descriptor was processed successfully */
MS_ENUMERROR_InvalidConfigDescriptor = 1, /**< The device returned an invalid Configuration Descriptor */
MS_ENUMERROR_NoMSInterfaceFound = 2, /**< A compatible Mass Storage interface was not found in the device's Configuration Descriptor */
MS_ENUMERROR_EndpointsNotFound = 3, /**< Compatible Mass Storage endpoints were not found in the device's interfaces */
};
/* Function Prototypes: */
/** General management task for a given Mass Storage host class interface, required for the correct operation of
* the interface. This should be called frequently in the main program loop, before the master USB management task
* \ref USB_USBTask().
*
* \param[in,out] MSInterfaceInfo Pointer to a structure containing an MS Class host configuration and state
*/
void MS_Host_USBTask(USB_ClassInfo_MS_Host_t* const MSInterfaceInfo) ATTR_NON_NULL_PTR_ARG(1);
/** Host interface configuration routine, to configure a given Mass Storage host interface instance using the
* Configuration Descriptor read from an attached USB device. This function automatically updates the given Mass
* Storage Host instance's state values and configures the pipes required to communicate with the interface if it
* is found within the device. This should be called once after the stack has enumerated the attached device, while
* the host state machine is in the Addressed state.
*
* \param[in,out] MSInterfaceInfo Pointer to a structure containing an MS Class host configuration and state
* \param[in] ConfigDescriptorSize Length of the attached device's Configuration Descriptor
* \param[in] DeviceConfigDescriptor Pointer to a buffer containing the attached device's Configuration Descriptor
*
* \return A value from the \ref MSHost_EnumerationFailure_ErrorCodes_t enum
*/
uint8_t MS_Host_ConfigurePipes(USB_ClassInfo_MS_Host_t* const MSInterfaceInfo, uint16_t ConfigDescriptorSize,
void* DeviceConfigDescriptor) ATTR_NON_NULL_PTR_ARG(1, 3);
/** Sends a MASS STORAGE RESET control request to the attached device, resetting the Mass Storage Interface
* and readying it for the next Mass Storage command.
*
* \param[in,out] MSInterfaceInfo Pointer to a structure containing a MS Class host configuration and state
*
* \return A value from the \ref USB_Host_SendControlErrorCodes_t enum
*/
uint8_t MS_Host_ResetMSInterface(USB_ClassInfo_MS_Host_t* const MSInterfaceInfo) ATTR_NON_NULL_PTR_ARG(1);
/** Sends a GET MAX LUN control request to the attached device, retrieving the index of the highest LUN (Logical
* UNit, a logical drive) in the device. This value can then be used in the other functions of the Mass Storage
* Host mode Class driver to address a specific LUN within the device.
*
* \param[in,out] MSInterfaceInfo Pointer to a structure containing a MS Class host configuration and state
* \param[out] MaxLUNIndex Pointer to a location where the highest LUN index value should be stored
*
* \return A value from the \ref USB_Host_SendControlErrorCodes_t enum
*/
uint8_t MS_Host_GetMaxLUN(USB_ClassInfo_MS_Host_t* const MSInterfaceInfo, uint8_t* const MaxLUNIndex) ATTR_NON_NULL_PTR_ARG(1, 2);
/** Retrieves the Mass Storage device's inquiry data for the specified LUN, indicating the device characteristics and
* properties.
*
* \param[in,out] MSInterfaceInfo Pointer to a structure containing a MS Class host configuration and state
* \param[in] LUNIndex LUN index within the device the command is being issued to
* \param[out] InquiryData Location where the read inquiry data should be stored
*
* \return A value from the \ref Pipe_Stream_RW_ErrorCodes_t enum or MS_ERROR_LOGICAL_CMD_FAILED
*/
uint8_t MS_Host_GetInquiryData(USB_ClassInfo_MS_Host_t* const MSInterfaceInfo, const uint8_t LUNIndex,
SCSI_Inquiry_Response_t* const InquiryData) ATTR_NON_NULL_PTR_ARG(1, 3);
/** Sends a TEST UNIT READY command to the device, to determine if it is ready to accept other SCSI commands.
*
* \param[in,out] MSInterfaceInfo Pointer to a structure containing a MS Class host configuration and state
* \param[in] LUNIndex LUN index within the device the command is being issued to
*
* \return A value from the \ref Pipe_Stream_RW_ErrorCodes_t enum or MS_ERROR_LOGICAL_CMD_FAILED if not ready
*/
uint8_t MS_Host_TestUnitReady(USB_ClassInfo_MS_Host_t* const MSInterfaceInfo, const uint8_t LUNIndex) ATTR_NON_NULL_PTR_ARG(1);
/** Retrieves the total capacity of the attached USB Mass Storage device, in blocks, and block size.
*
* \param[in,out] MSInterfaceInfo Pointer to a structure containing a MS Class host configuration and state
* \param[in] LUNIndex LUN index within the device the command is being issued to
* \param[out] DeviceCapacity Pointer to the location where the capacity information should be stored
*
* \return A value from the \ref Pipe_Stream_RW_ErrorCodes_t enum or MS_ERROR_LOGICAL_CMD_FAILED if not ready
*/
uint8_t MS_Host_ReadDeviceCapacity(USB_ClassInfo_MS_Host_t* const MSInterfaceInfo, const uint8_t LUNIndex,
SCSI_Capacity_t* const DeviceCapacity) ATTR_NON_NULL_PTR_ARG(1, 3);
/** Retrieves the device sense data, indicating the current device state and error codes for the previously
* issued command.
*
* \param[in,out] MSInterfaceInfo Pointer to a structure containing a MS Class host configuration and state
* \param[in] LUNIndex LUN index within the device the command is being issued to
* \param[out] SenseData Pointer to the location where the sense information should be stored
*
* \return A value from the \ref Pipe_Stream_RW_ErrorCodes_t enum or MS_ERROR_LOGICAL_CMD_FAILED if not ready
*/
uint8_t MS_Host_RequestSense(USB_ClassInfo_MS_Host_t* const MSInterfaceInfo, const uint8_t LUNIndex,
SCSI_Request_Sense_Response_t* const SenseData) ATTR_NON_NULL_PTR_ARG(1, 3);
/** Issues a PREVENT MEDIUM REMOVAL command, to logically (or, depending on the type of device, physically) lock
* the device from removal so that blocks of data on the medium can be read or altered.
*
* \param[in,out] MSInterfaceInfo Pointer to a structure containing a MS Class host configuration and state
* \param[in] LUNIndex LUN index within the device the command is being issued to
* \param[in] PreventRemoval Boolean true if the device should be locked from removal, false otherwise
*
* \return A value from the \ref Pipe_Stream_RW_ErrorCodes_t enum or MS_ERROR_LOGICAL_CMD_FAILED if not ready
*/
uint8_t MS_Host_PreventAllowMediumRemoval(USB_ClassInfo_MS_Host_t* const MSInterfaceInfo, const uint8_t LUNIndex,
const bool PreventRemoval) ATTR_NON_NULL_PTR_ARG(1);
/** Reads blocks of data from the attached Mass Storage device's medium.
*
* \param[in,out] MSInterfaceInfo Pointer to a structure containing a MS Class host configuration and state
* \param[in] LUNIndex LUN index within the device the command is being issued to
* \param[in] BlockAddress Starting block address within the device to read from
* \param[in] Blocks Total number of blocks to read
* \param[in] BlockSize Size in bytes of each block within the device
* \param[out] BlockBuffer Pointer to where the read data from the device should be stored
*
* \return A value from the \ref Pipe_Stream_RW_ErrorCodes_t enum or MS_ERROR_LOGICAL_CMD_FAILED if not ready
*/
uint8_t MS_Host_ReadDeviceBlocks(USB_ClassInfo_MS_Host_t* const MSInterfaceInfo, const uint8_t LUNIndex,
const uint32_t BlockAddress, const uint8_t Blocks, const uint16_t BlockSize,
void* BlockBuffer) ATTR_NON_NULL_PTR_ARG(1, 6);
/** Writes blocks of data to the attached Mass Storage device's medium.
*
* \param[in,out] MSInterfaceInfo Pointer to a structure containing a MS Class host configuration and state
* \param[in] LUNIndex LUN index within the device the command is being issued to
* \param[in] BlockAddress Starting block address within the device to write to
* \param[in] Blocks Total number of blocks to read
* \param[in] BlockSize Size in bytes of each block within the device
* \param[in] BlockBuffer Pointer to where the data to write should be sourced from
*
* \return A value from the \ref Pipe_Stream_RW_ErrorCodes_t enum or MS_ERROR_LOGICAL_CMD_FAILED if not ready
*/
uint8_t MS_Host_WriteDeviceBlocks(USB_ClassInfo_MS_Host_t* const MSInterfaceInfo, const uint8_t LUNIndex,
const uint32_t BlockAddress, const uint8_t Blocks, const uint16_t BlockSize,
void* BlockBuffer) ATTR_NON_NULL_PTR_ARG(1, 6);
/* Private Interface - For use in library only: */
#if !defined(__DOXYGEN__)
/* Macros: */
#define MASS_STORE_CLASS 0x08
#define MASS_STORE_SUBCLASS 0x06
#define MASS_STORE_PROTOCOL 0x50
#define REQ_MassStorageReset 0xFF
#define REQ_GetMaxLUN 0xFE
#define CBW_SIGNATURE 0x43425355UL
#define CSW_SIGNATURE 0x53425355UL
#define COMMAND_DIRECTION_DATA_OUT (0 << 7)
#define COMMAND_DIRECTION_DATA_IN (1 << 7)
#define COMMAND_DATA_TIMEOUT_MS 2000
#define MS_FOUND_DATAPIPE_IN (1 << 0)
#define MS_FOUND_DATAPIPE_OUT (1 << 1)
/* Function Prototypes: */
#if defined(INCLUDE_FROM_MS_CLASS_HOST_C)
static uint8_t DComp_NextMSInterface(void* const CurrentDescriptor);
static uint8_t DComp_NextMSInterfaceEndpoint(void* const CurrentDescriptor);
static uint8_t MS_Host_SendCommand(USB_ClassInfo_MS_Host_t* const MSInterfaceInfo,
MS_CommandBlockWrapper_t* const SCSICommandBlock,
void* BufferPtr);
static uint8_t MS_Host_WaitForDataReceived(USB_ClassInfo_MS_Host_t* const MSInterfaceInfo);
static uint8_t MS_Host_SendReceiveData(USB_ClassInfo_MS_Host_t* const MSInterfaceInfo,
MS_CommandBlockWrapper_t* const SCSICommandBlock, void* BufferPtr);
static uint8_t MS_Host_GetReturnedStatus(USB_ClassInfo_MS_Host_t* const MSInterfaceInfo,
MS_CommandStatusWrapper_t* const SCSICommandStatus);
#endif
#endif
/* Disable C linkage for C++ Compilers: */
#if defined(__cplusplus)
}
#endif
#endif
/** @} */
|
