diff options
Diffstat (limited to 'LUFA/Drivers/USB/Class/Host/MassStorage.h')
-rw-r--r-- | LUFA/Drivers/USB/Class/Host/MassStorage.h | 678 |
1 files changed, 339 insertions, 339 deletions
diff --git a/LUFA/Drivers/USB/Class/Host/MassStorage.h b/LUFA/Drivers/USB/Class/Host/MassStorage.h index d2ab970094..992c5a0a62 100644 --- a/LUFA/Drivers/USB/Class/Host/MassStorage.h +++ b/LUFA/Drivers/USB/Class/Host/MassStorage.h @@ -1,339 +1,339 @@ -/*
- LUFA Library
- Copyright (C) Dean Camera, 2010.
-
- dean [at] fourwalledcubicle [dot] com
- www.fourwalledcubicle.com
-*/
-
-/*
- Copyright 2010 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
- 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
- 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
- * \brief Host mode driver for the library USB Mass Storage Class driver.
- *
- * Host mode driver for the library USB Mass Storage Class driver.
- *
- * \note This file should not be included directly. It is automatically included as needed by the class driver
- * dispatch header located in LUFA/Drivers/USB/Class/MassStorage.h.
- */
-
-/** \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
-
- /* Preprocessor Checks: */
- #if !defined(__INCLUDE_FROM_MS_DRIVER)
- #error Do not include this file directly. Include LUFA/Drivers/Class/MassStorage.h instead.
- #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: */
- /** \brief Mass Storage Class Host Mode Configuration and State Structure.
- *
- * 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;
-
- /** \brief SCSI Device LUN Capacity Structure.
- *
- * 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: */
- /** 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) ATTR_NON_NULL_PTR_ARG(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.
- *
- * \note Some devices do not support this request, and will STALL it when issued. To get around this,
- * on unsupported devices the max LUN index will be reported as zero and no error will be returned
- * if the device STALLs the request.
- *
- * \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) ATTR_NON_NULL_PTR_ARG(2);
-
- /** Retrieves the Mass Storage device's inquiry data for the specified LUN, indicating the device characteristics and
- * properties.
- *
- * \note This function must only be called when the Host state machine is in the HOST_STATE_Configured state or the
- * call will fail.
- *
- * \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)
- ATTR_NON_NULL_PTR_ARG(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.
- *
- * \note This function must only be called when the Host state machine is in the HOST_STATE_Configured state or the
- * call will fail.
- *
- * \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)
- ATTR_NON_NULL_PTR_ARG(3);
-
- /** Retrieves the device sense data, indicating the current device state and error codes for the previously
- * issued command.
- *
- * \note This function must only be called when the Host state machine is in the HOST_STATE_Configured state or the
- * call will fail.
- *
- * \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)
- ATTR_NON_NULL_PTR_ARG(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.
- *
- * \note This function must only be called when the Host state machine is in the HOST_STATE_Configured state or the
- * call will fail.
- *
- * \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.
- *
- * \note This function must only be called when the Host state machine is in the HOST_STATE_Configured state or the
- * call will fail.
- *
- * \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) ATTR_NON_NULL_PTR_ARG(6);
-
- /** Writes blocks of data to the attached Mass Storage device's medium.
- *
- * \note This function must only be called when the Host state machine is in the HOST_STATE_Configured state or the
- * call will fail.
- *
- * \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,
- const void* BlockBuffer) ATTR_NON_NULL_PTR_ARG(1) ATTR_NON_NULL_PTR_ARG(6);
-
- /* Inline Functions: */
- /** 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
- */
- static inline void MS_Host_USBTask(USB_ClassInfo_MS_Host_t* const MSInterfaceInfo);
- static inline void MS_Host_USBTask(USB_ClassInfo_MS_Host_t* const MSInterfaceInfo)
- {
- (void)MSInterfaceInfo;
- }
-
- /* 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 10000
-
- #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,
- const void* const 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
-
-/** @} */
+/* + LUFA Library + Copyright (C) Dean Camera, 2010. + + dean [at] fourwalledcubicle [dot] com + www.fourwalledcubicle.com +*/ + +/* + Copyright 2010 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 + 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 + 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 + * \brief Host mode driver for the library USB Mass Storage Class driver. + * + * Host mode driver for the library USB Mass Storage Class driver. + * + * \note This file should not be included directly. It is automatically included as needed by the class driver + * dispatch header located in LUFA/Drivers/USB/Class/MassStorage.h. + */ + +/** \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 + + /* Preprocessor Checks: */ + #if !defined(__INCLUDE_FROM_MS_DRIVER) + #error Do not include this file directly. Include LUFA/Drivers/Class/MassStorage.h instead. + #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: */ + /** \brief Mass Storage Class Host Mode Configuration and State Structure. + * + * 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; + + /** \brief SCSI Device LUN Capacity Structure. + * + * 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: */ + /** 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) ATTR_NON_NULL_PTR_ARG(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. + * + * \note Some devices do not support this request, and will STALL it when issued. To get around this, + * on unsupported devices the max LUN index will be reported as zero and no error will be returned + * if the device STALLs the request. + * + * \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) ATTR_NON_NULL_PTR_ARG(2); + + /** Retrieves the Mass Storage device's inquiry data for the specified LUN, indicating the device characteristics and + * properties. + * + * \note This function must only be called when the Host state machine is in the HOST_STATE_Configured state or the + * call will fail. + * + * \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) + ATTR_NON_NULL_PTR_ARG(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. + * + * \note This function must only be called when the Host state machine is in the HOST_STATE_Configured state or the + * call will fail. + * + * \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) + ATTR_NON_NULL_PTR_ARG(3); + + /** Retrieves the device sense data, indicating the current device state and error codes for the previously + * issued command. + * + * \note This function must only be called when the Host state machine is in the HOST_STATE_Configured state or the + * call will fail. + * + * \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) + ATTR_NON_NULL_PTR_ARG(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. + * + * \note This function must only be called when the Host state machine is in the HOST_STATE_Configured state or the + * call will fail. + * + * \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. + * + * \note This function must only be called when the Host state machine is in the HOST_STATE_Configured state or the + * call will fail. + * + * \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) ATTR_NON_NULL_PTR_ARG(6); + + /** Writes blocks of data to the attached Mass Storage device's medium. + * + * \note This function must only be called when the Host state machine is in the HOST_STATE_Configured state or the + * call will fail. + * + * \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, + const void* BlockBuffer) ATTR_NON_NULL_PTR_ARG(1) ATTR_NON_NULL_PTR_ARG(6); + + /* Inline Functions: */ + /** 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 + */ + static inline void MS_Host_USBTask(USB_ClassInfo_MS_Host_t* const MSInterfaceInfo); + static inline void MS_Host_USBTask(USB_ClassInfo_MS_Host_t* const MSInterfaceInfo) + { + (void)MSInterfaceInfo; + } + + /* 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 10000 + + #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, + const void* const 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 + +/** @} */ |