LUFA/Drivers/USB/Class/Host/MassStorageClassHost.h

   1 /*
   2              LUFA Library
   3      Copyright (C) Dean Camera, 2013.
   4
   5   dean [at] fourwalledcubicle [dot] com
   6            www.lufa-lib.org
   7 */
   8
   9 /*
  10   Copyright 2013  Dean Camera (dean [at] fourwalledcubicle [dot] com)
  11
  12   Permission to use, copy, modify, distribute, and sell this
  13   software and its documentation for any purpose is hereby granted
  14   without fee, provided that the above copyright notice appear in
  15   all copies and that both that the copyright notice and this
  16   permission notice and warranty disclaimer appear in supporting
  17   documentation, and that the name of the author not be used in
  18   advertising or publicity pertaining to distribution of the
  19   software without specific, written prior permission.
  20
  21   The author disclaims all warranties with regard to this
  22   software, including all implied warranties of merchantability
  23   and fitness.  In no event shall the author be liable for any
  24   special, indirect or consequential damages or any damages
  25   whatsoever resulting from loss of use, data or profits, whether
  26   in an action of contract, negligence or other tortious action,
  27   arising out of or in connection with the use or performance of
  28   this software.
  29 */
  30
  31 /** \file
  32  *  \brief Host mode driver for the library USB Mass Storage Class driver.
  33  *
  34  *  Host mode driver for the library USB Mass Storage Class driver.
  35  *
  36  *  \note This file should not be included directly. It is automatically included as needed by the USB module driver
  37  *        dispatch header located in LUFA/Drivers/USB.h.
  38  */
  39
  40 /** \ingroup Group_USBClassMS
  41  *  \defgroup Group_USBClassMassStorageHost Mass Storage Class Host Mode Driver
  42  *
  43  *  \section Sec_USBClassMassStorageHost_Dependencies Module Source Dependencies
  44  *  The following files must be built with any user project that uses this module:
  45  *    - LUFA/Drivers/USB/Class/Host/MassStorageClassHost.c <i>(Makefile source module name: LUFA_SRC_USBCLASS)</i>
  46  *
  47  *  \section Sec_USBClassMassStorageHost_ModDescription Module Description
  48  *  Host Mode USB Class driver framework interface, for the Mass Storage USB Class driver.
  49  *
  50  *  @{
  51  */
  52
  53 #ifndef __MS_CLASS_HOST_H__
  54 #define __MS_CLASS_HOST_H__
  55
  56         /* Includes: */
  57                 #include "../../USB.h"
  58                 #include "../Common/MassStorageClassCommon.h"
  59
  60         /* Enable C linkage for C++ Compilers: */
  61                 #if defined(__cplusplus)
  62                         extern "C" {
  63                 #endif
  64
  65         /* Preprocessor Checks: */
  66                 #if !defined(__INCLUDE_FROM_MS_DRIVER)
  67                         #error Do not include this file directly. Include LUFA/Drivers/USB.h instead.
  68                 #endif
  69
  70         /* Public Interface - May be used in end-application: */
  71                 /* Macros: */
  72                         /** Error code for some Mass Storage Host functions, indicating a logical (and not hardware) error. */
  73                         #define MS_ERROR_LOGICAL_CMD_FAILED              0x80
  74
  75                 /* Type Defines: */
  76                         /** \brief Mass Storage Class Host Mode Configuration and State Structure.
  77                          *
  78                          *  Class state structure. An instance of this structure should be made within the user application,
  79                          *  and passed to each of the Mass Storage class driver functions as the \c MSInterfaceInfo parameter. This
  80                          *  stores each Mass Storage interface's configuration and state information.
  81                          */
  82                         typedef struct
  83                         {
  84                                 struct
  85                                 {
  86                                         USB_Pipe_Table_t DataINPipe; /**< Data IN Pipe configuration table. */
  87                                         USB_Pipe_Table_t DataOUTPipe; /**< Data OUT Pipe configuration table. */
  88                                 } Config; /**< Config data for the USB class interface within the device. All elements in this section
  89                                            *   <b>must</b> be set or the interface will fail to enumerate and operate correctly.
  90                                            */
  91                                 struct
  92                                 {
  93                                         bool     IsActive; /**< Indicates if the current interface instance is connected to an attached device, valid
  94                                                             *   after \ref MS_Host_ConfigurePipes() is called and the Host state machine is in the
  95                                                             *   Configured state.
  96                                                             */
  97                                         uint8_t  InterfaceNumber; /**< Interface index of the Mass Storage interface within the attached device. */
  98
  99                                         uint32_t TransactionTag; /**< Current transaction tag for data synchronizing of packets. */
 100                                 } State; /**< State data for the USB class interface within the device. All elements in this section
 101                                                   *   <b>may</b> be set to initial values, but may also be ignored to default to sane values when
 102                                                   *   the interface is enumerated.
 103                                                   */
 104                         } USB_ClassInfo_MS_Host_t;
 105
 106                         /** \brief SCSI Device LUN Capacity Structure.
 107                          *
 108                          *  SCSI capacity structure, to hold the total capacity of the device in both the number
 109                          *  of blocks in the current LUN, and the size of each block. This structure is filled by
 110                          *  the device when the \ref MS_Host_ReadDeviceCapacity() function is called.
 111                          */
 112                         typedef struct
 113                         {
 114                                 uint32_t Blocks; /**< Number of blocks in the addressed LUN of the device. */
 115                                 uint32_t BlockSize; /**< Number of bytes in each block in the addressed LUN. */
 116                         } SCSI_Capacity_t;
 117
 118                 /* Enums: */
 119                         /** Enum for the possible error codes returned by the \ref MS_Host_ConfigurePipes() function. */
 120                         enum MS_Host_EnumerationFailure_ErrorCodes_t
 121                         {
 122                                 MS_ENUMERROR_NoError                    = 0, /**< Configuration Descriptor was processed successfully. */
 123                                 MS_ENUMERROR_InvalidConfigDescriptor    = 1, /**< The device returned an invalid Configuration Descriptor. */
 124                                 MS_ENUMERROR_NoCompatibleInterfaceFound = 2, /**< A compatible Mass Storage interface was not found in the device's Configuration Descriptor. */
 125                                 MS_ENUMERROR_PipeConfigurationFailed    = 3, /**< One or more pipes for the specified interface could not be configured correctly. */
 126                         };
 127
 128                 /* Function Prototypes: */
 129                         /** Host interface configuration routine, to configure a given Mass Storage host interface instance using the
 130                          *  Configuration Descriptor read from an attached USB device. This function automatically updates the given Mass
 131                          *  Storage Host instance's state values and configures the pipes required to communicate with the interface if it
 132                          *  is found within the device. This should be called once after the stack has enumerated the attached device, while
 133                          *  the host state machine is in the Addressed state.
 134                          *
 135                          *  \param[in,out] MSInterfaceInfo         Pointer to a structure containing an MS Class host configuration and state.
 136                          *  \param[in]     ConfigDescriptorSize    Length of the attached device's Configuration Descriptor.
 137                          *  \param[in]     DeviceConfigDescriptor  Pointer to a buffer containing the attached device's Configuration Descriptor.
 138                          *
 139                          *  \return A value from the \ref MS_Host_EnumerationFailure_ErrorCodes_t enum.
 140                          */
 141                         uint8_t MS_Host_ConfigurePipes(USB_ClassInfo_MS_Host_t* const MSInterfaceInfo,
 142                                                        uint16_t ConfigDescriptorSize,
 143                                                        void* DeviceConfigDescriptor) ATTR_NON_NULL_PTR_ARG(1) ATTR_NON_NULL_PTR_ARG(3);
 144
 145                         /** Sends a MASS STORAGE RESET control request to the attached device, resetting the Mass Storage Interface
 146                          *  and readying it for the next Mass Storage command. This should be called after a failed SCSI request to
 147                          *  ensure the attached Mass Storage device is ready to receive the next command.
 148                          *
 149                          *  \param[in,out] MSInterfaceInfo  Pointer to a structure containing a MS Class host configuration and state.
 150                          *
 151                          *  \return A value from the \ref USB_Host_SendControlErrorCodes_t enum.
 152                          */
 153                         uint8_t MS_Host_ResetMSInterface(USB_ClassInfo_MS_Host_t* const MSInterfaceInfo) ATTR_NON_NULL_PTR_ARG(1);
 154
 155                         /** Sends a GET MAX LUN control request to the attached device, retrieving the index of the highest LUN (Logical
 156                          *  UNit, a logical drive) in the device. This value can then be used in the other functions of the Mass Storage
 157                          *  Host mode Class driver to address a specific LUN within the device.
 158                          *
 159                          *  \note Some devices do not support this request, and will STALL it when issued. To get around this,
 160                          *        on unsupported devices the max LUN index will be reported as zero and no error will be returned
 161                          *        if the device STALLs the request.
 162                          *
 163                          *  \param[in,out] MSInterfaceInfo  Pointer to a structure containing a MS Class host configuration and state.
 164                          *  \param[out]    MaxLUNIndex      Pointer to a location where the highest LUN index value should be stored.
 165                          *
 166                          *  \return A value from the \ref USB_Host_SendControlErrorCodes_t enum.
 167                          */
 168                         uint8_t MS_Host_GetMaxLUN(USB_ClassInfo_MS_Host_t* const MSInterfaceInfo,
 169                                                   uint8_t* const MaxLUNIndex) ATTR_NON_NULL_PTR_ARG(1) ATTR_NON_NULL_PTR_ARG(2);
 170
 171                         /** Retrieves the Mass Storage device's inquiry data for the specified LUN, indicating the device characteristics and
 172                          *  properties.
 173                          *
 174                          *  \pre This function must only be called when the Host state machine is in the \ref HOST_STATE_Configured state or the
 175                          *       call will fail.
 176                          *
 177                          *  \param[in,out] MSInterfaceInfo  Pointer to a structure containing a MS Class host configuration and state.
 178                          *  \param[in]     LUNIndex         LUN index within the device the command is being issued to.
 179                          *  \param[out]    InquiryData      Location where the read inquiry data should be stored.
 180                          *
 181                          *  \return A value from the \ref Pipe_Stream_RW_ErrorCodes_t enum or \ref MS_ERROR_LOGICAL_CMD_FAILED.
 182                          */
 183                         uint8_t MS_Host_GetInquiryData(USB_ClassInfo_MS_Host_t* const MSInterfaceInfo,
 184                                                        const uint8_t LUNIndex,
 185                                                        SCSI_Inquiry_Response_t* const InquiryData) ATTR_NON_NULL_PTR_ARG(1)
 186                                                        ATTR_NON_NULL_PTR_ARG(3);
 187
 188                         /** Sends a TEST UNIT READY command to the device, to determine if it is ready to accept other SCSI commands.
 189                          *
 190                          *  \param[in,out] MSInterfaceInfo  Pointer to a structure containing a MS Class host configuration and state.
 191                          *  \param[in]     LUNIndex         LUN index within the device the command is being issued to.
 192                          *
 193                          *  \return A value from the \ref Pipe_Stream_RW_ErrorCodes_t enum or \ref MS_ERROR_LOGICAL_CMD_FAILED if not ready.
 194                          */
 195                         uint8_t MS_Host_TestUnitReady(USB_ClassInfo_MS_Host_t* const MSInterfaceInfo,
 196                                                       const uint8_t LUNIndex) ATTR_NON_NULL_PTR_ARG(1);
 197
 198                         /** Retrieves the total capacity of the attached USB Mass Storage device, in blocks, and block size.
 199                          *
 200                          *  \pre This function must only be called when the Host state machine is in the \ref HOST_STATE_Configured state or the
 201                          *       call will fail.
 202                          *
 203                          *  \param[in,out] MSInterfaceInfo  Pointer to a structure containing a MS Class host configuration and state.
 204                          *  \param[in]     LUNIndex         LUN index within the device the command is being issued to.
 205                          *  \param[out]    DeviceCapacity   Pointer to the location where the capacity information should be stored.
 206                          *
 207                          *  \return A value from the \ref Pipe_Stream_RW_ErrorCodes_t enum or \ref MS_ERROR_LOGICAL_CMD_FAILED if not ready.
 208                          */
 209                         uint8_t MS_Host_ReadDeviceCapacity(USB_ClassInfo_MS_Host_t* const MSInterfaceInfo,
 210                                                            const uint8_t LUNIndex,
 211                                                            SCSI_Capacity_t* const DeviceCapacity) ATTR_NON_NULL_PTR_ARG(1)
 212                                                            ATTR_NON_NULL_PTR_ARG(3);
 213
 214                         /** Retrieves the device sense data, indicating the current device state and error codes for the previously
 215                          *  issued command.
 216                          *
 217                          *  \pre This function must only be called when the Host state machine is in the \ref HOST_STATE_Configured state or the
 218                          *       call will fail.
 219                          *
 220                          *  \param[in,out] MSInterfaceInfo  Pointer to a structure containing a MS Class host configuration and state.
 221                          *  \param[in]     LUNIndex         LUN index within the device the command is being issued to.
 222                          *  \param[out]    SenseData        Pointer to the location where the sense information should be stored.
 223                          *
 224                          *  \return A value from the \ref Pipe_Stream_RW_ErrorCodes_t enum or \ref MS_ERROR_LOGICAL_CMD_FAILED if not ready.
 225                          */
 226                         uint8_t MS_Host_RequestSense(USB_ClassInfo_MS_Host_t* const MSInterfaceInfo,
 227                                                      const uint8_t LUNIndex,
 228                                                      SCSI_Request_Sense_Response_t* const SenseData) ATTR_NON_NULL_PTR_ARG(1)
 229                                                      ATTR_NON_NULL_PTR_ARG(3);
 230
 231                         /** Issues a PREVENT MEDIUM REMOVAL command, to logically (or, depending on the type of device, physically) lock
 232                          *  the device from removal so that blocks of data on the medium can be read or altered.
 233                          *
 234                          *  \pre This function must only be called when the Host state machine is in the \ref HOST_STATE_Configured state or the
 235                          *       call will fail.
 236                          *
 237                          *  \param[in,out] MSInterfaceInfo  Pointer to a structure containing a MS Class host configuration and state.
 238                          *  \param[in]     LUNIndex         LUN index within the device the command is being issued to.
 239                          *  \param[in]     PreventRemoval   Boolean \c true if the device should be locked from removal, \c false otherwise.
 240                          *
 241                          *  \return A value from the \ref Pipe_Stream_RW_ErrorCodes_t enum or \ref MS_ERROR_LOGICAL_CMD_FAILED if not ready.
 242                          */
 243                         uint8_t MS_Host_PreventAllowMediumRemoval(USB_ClassInfo_MS_Host_t* const MSInterfaceInfo,
 244                                                                   const uint8_t LUNIndex,
 245                                                                   const bool PreventRemoval) ATTR_NON_NULL_PTR_ARG(1);
 246
 247                         /** Reads blocks of data from the attached Mass Storage device's medium.
 248                          *
 249                          *  \pre This function must only be called when the Host state machine is in the \ref HOST_STATE_Configured state or the
 250                          *       call will fail.
 251                          *
 252                          *  \param[in,out] MSInterfaceInfo  Pointer to a structure containing a MS Class host configuration and state.
 253                          *  \param[in]     LUNIndex         LUN index within the device the command is being issued to.
 254                          *  \param[in]     BlockAddress     Starting block address within the device to read from.
 255                          *  \param[in]     Blocks           Total number of blocks to read.
 256                          *  \param[in]     BlockSize        Size in bytes of each block within the device.
 257                          *  \param[out]    BlockBuffer      Pointer to where the read data from the device should be stored.
 258                          *
 259                          *  \return A value from the \ref Pipe_Stream_RW_ErrorCodes_t enum or \ref MS_ERROR_LOGICAL_CMD_FAILED if not ready.
 260                          */
 261                         uint8_t MS_Host_ReadDeviceBlocks(USB_ClassInfo_MS_Host_t* const MSInterfaceInfo,
 262                                                          const uint8_t LUNIndex,
 263                                                          const uint32_t BlockAddress,
 264                                                          const uint8_t Blocks,
 265                                                          const uint16_t BlockSize,
 266                                                          void* BlockBuffer) ATTR_NON_NULL_PTR_ARG(1) ATTR_NON_NULL_PTR_ARG(6);
 267
 268                         /** Writes blocks of data to the attached Mass Storage device's medium.
 269                          *
 270                          *  \pre This function must only be called when the Host state machine is in the \ref HOST_STATE_Configured state or the
 271                          *       call will fail.
 272                          *
 273                          *  \param[in,out] MSInterfaceInfo  Pointer to a structure containing a MS Class host configuration and state.
 274                          *  \param[in]     LUNIndex         LUN index within the device the command is being issued to.
 275                          *  \param[in]     BlockAddress     Starting block address within the device to write to.
 276                          *  \param[in]     Blocks           Total number of blocks to read.
 277                          *  \param[in]     BlockSize        Size in bytes of each block within the device.
 278                          *  \param[in]     BlockBuffer      Pointer to where the data to write should be sourced from.
 279                          *
 280                          *  \return A value from the \ref Pipe_Stream_RW_ErrorCodes_t enum or \ref MS_ERROR_LOGICAL_CMD_FAILED if not ready.
 281                          */
 282                         uint8_t MS_Host_WriteDeviceBlocks(USB_ClassInfo_MS_Host_t* const MSInterfaceInfo,
 283                                                           const uint8_t LUNIndex,
 284                                                           const uint32_t BlockAddress,
 285                                                           const uint8_t Blocks,
 286                                                           const uint16_t BlockSize,
 287                                                           const void* BlockBuffer) ATTR_NON_NULL_PTR_ARG(1) ATTR_NON_NULL_PTR_ARG(6);
 288
 289                 /* Inline Functions: */
 290                         /** General management task for a given Mass Storage host class interface, required for the correct operation of
 291                          *  the interface. This should be called frequently in the main program loop, before the master USB management task
 292                          *  \ref USB_USBTask().
 293                          *
 294                          *  \param[in,out] MSInterfaceInfo  Pointer to a structure containing an Mass Storage Class host configuration and state.
 295                          */
 296                         static inline void MS_Host_USBTask(USB_ClassInfo_MS_Host_t* const MSInterfaceInfo) ATTR_NON_NULL_PTR_ARG(1) ATTR_ALWAYS_INLINE;
 297                         static inline void MS_Host_USBTask(USB_ClassInfo_MS_Host_t* const MSInterfaceInfo)
 298                         {
 299                                 (void)MSInterfaceInfo;
 300                         }
 301
 302         /* Private Interface - For use in library only: */
 303         #if !defined(__DOXYGEN__)
 304                 /* Macros: */
 305                         #define MS_COMMAND_DATA_TIMEOUT_MS        10000
 306
 307                 /* Function Prototypes: */
 308                         #if defined(__INCLUDE_FROM_MASSSTORAGE_HOST_C)
 309                                 static uint8_t MS_Host_SendCommand(USB_ClassInfo_MS_Host_t* const MSInterfaceInfo,
 310                                                                    MS_CommandBlockWrapper_t* const SCSICommandBlock,
 311                                                                    const void* const BufferPtr) ATTR_NON_NULL_PTR_ARG(1) ATTR_NON_NULL_PTR_ARG(2);
 312                                 static uint8_t MS_Host_WaitForDataReceived(USB_ClassInfo_MS_Host_t* const MSInterfaceInfo) ATTR_NON_NULL_PTR_ARG(1);
 313                                 static uint8_t MS_Host_SendReceiveData(USB_ClassInfo_MS_Host_t* const MSInterfaceInfo,
 314                                                                        MS_CommandBlockWrapper_t* const SCSICommandBlock,
 315                                                                        void* BufferPtr) ATTR_NON_NULL_PTR_ARG(1) ATTR_NON_NULL_PTR_ARG(2);
 316                                 static uint8_t MS_Host_GetReturnedStatus(USB_ClassInfo_MS_Host_t* const MSInterfaceInfo,
 317                                                                          MS_CommandStatusWrapper_t* const SCSICommandStatus)
 318                                                                          ATTR_NON_NULL_PTR_ARG(1) ATTR_NON_NULL_PTR_ARG(2);
 319
 320                                 static uint8_t DCOMP_MS_Host_NextMSInterface(void* const CurrentDescriptor)
 321                                                                              ATTR_WARN_UNUSED_RESULT ATTR_NON_NULL_PTR_ARG(1);
 322                                 static uint8_t DCOMP_MS_Host_NextMSInterfaceEndpoint(void* const CurrentDescriptor)
 323                                                                                      ATTR_WARN_UNUSED_RESULT ATTR_NON_NULL_PTR_ARG(1);
 324                         #endif
 325         #endif
 326
 327         /* Disable C linkage for C++ Compilers: */
 328                 #if defined(__cplusplus)
 329                         }
 330                 #endif
 331
 332 #endif
 333
 334 /** @} */
 335