MassStorage.h 17.9 KB
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 Dean Camera committed May 08, 2010 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 /* 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 * must 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 * may 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. *  Dean Camera committed May 29, 2010 140 141 142  * \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  Dean Camera committed May 08, 2010 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166  * * \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  Dean Camera committed May 29, 2010 167  * \param[out] MaxLUNIndex Pointer to a location where the highest LUN index value should be stored  Dean Camera committed May 08, 2010 168 169 170 171 172 173 174 175 176 177 178 179 180  * * \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  Dean Camera committed May 29, 2010 181 182  * \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  Dean Camera committed May 08, 2010 183 184 185 186 187 188 189 190 191 192  * * \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  Dean Camera committed May 29, 2010 193  * \param[in] LUNIndex LUN index within the device the command is being issued to  Dean Camera committed May 08, 2010 194 195 196 197 198 199 200 201 202 203 204 205  * * \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  Dean Camera committed May 29, 2010 206 207  * \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  Dean Camera committed May 08, 2010 208 209 210 211 212 213 214 215 216 217 218 219 220 221  * * \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  Dean Camera committed May 29, 2010 222 223  * \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  Dean Camera committed May 08, 2010 224 225 226 227 228 229 230 231 232 233 234 235 236 237  * * \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  Dean Camera committed May 29, 2010 238 239  * \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  Dean Camera committed May 08, 2010 240 241 242 243 244 245 246 247 248 249 250 251  * * \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  Dean Camera committed May 29, 2010 252 253 254 255 256  * \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  Dean Camera committed May 08, 2010 257 258 259 260 261 262 263 264 265 266 267 268 269  * * \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  Dean Camera committed May 29, 2010 270 271 272 273 274  * \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  Dean Camera committed May 08, 2010 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317  * * \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)  Dean Camera committed May 09, 2010 318 319  static uint8_t DCOMP_MS_NextMSInterface(void* const CurrentDescriptor); static uint8_t DCOMP_MS_NextMSInterfaceEndpoint(void* const CurrentDescriptor);  Dean Camera committed May 08, 2010 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339  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 /** @} */