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Diffstat (limited to 'LUFA/Drivers/USB/Class/Host/MassStorage.h')
| -rw-r--r-- | LUFA/Drivers/USB/Class/Host/MassStorage.h | 344 |
1 files changed, 344 insertions, 0 deletions
diff --git a/LUFA/Drivers/USB/Class/Host/MassStorage.h b/LUFA/Drivers/USB/Class/Host/MassStorage.h new file mode 100644 index 0000000..ad4286d --- /dev/null +++ b/LUFA/Drivers/USB/Class/Host/MassStorage.h @@ -0,0 +1,344 @@ +/*
+ LUFA Library
+ Copyright (C) Dean Camera, 2010.
+
+ dean [at] fourwalledcubicle [dot] com
+ www.lufa-lib.org
+*/
+
+/*
+ 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 USB module driver
+ * dispatch header located in LUFA/Drivers/USB.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 <i>(Makefile source module name: LUFA_SRC_USBCLASS)</i>
+ *
+ * \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/USB.h instead.
+ #endif
+
+ #if defined(__INCLUDE_FROM_MASSSTORAGE_HOST_C) && defined(NO_STREAM_CALLBACKS)
+ #error The NO_STREAM_CALLBACKS compile time option cannot be used in projects using the library Class drivers.
+ #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 \ref MS_Host_ReadDeviceCapacity() 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 MS_Host_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_NoCompatibleInterfaceFound = 2, /**< A compatible Mass Storage interface was not found in the device's Configuration Descriptor. */
+ };
+
+ /* 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.
+ *
+ * \note The pipe index numbers as given in the interface's configuration structure must not overlap with any other
+ * interface, or pipe bank corruption will occur. Gaps in the allocated pipe numbers or non-sequential indexes
+ * within a single interface is allowed, but no two interfaces of any type have have interleaved pipe indexes.
+ *
+ * \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] ConfigDescriptorData Pointer to a buffer containing the attached device's Configuration Descriptor.
+ *
+ * \return A value from the \ref MS_Host_EnumerationFailure_ErrorCodes_t enum.
+ */
+ uint8_t MS_Host_ConfigurePipes(USB_ClassInfo_MS_Host_t* const MSInterfaceInfo,
+ uint16_t ConfigDescriptorSize,
+ void* ConfigDescriptorData) 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.
+ *
+ * \pre This function must only be called when the Host state machine is in the \ref 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 \ref 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 \ref 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.
+ *
+ * \pre This function must only be called when the Host state machine is in the \ref 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 \ref 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.
+ *
+ * \pre This function must only be called when the Host state machine is in the \ref 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 \ref 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.
+ *
+ * \pre This function must only be called when the Host state machine is in the \ref 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 \ref 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.
+ *
+ * \pre This function must only be called when the Host state machine is in the \ref 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 \ref 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.
+ *
+ * \pre This function must only be called when the Host state machine is in the \ref 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 \ref 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 Mass Storage 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 MS_COMMAND_DATA_TIMEOUT_MS 10000
+
+ /* Function Prototypes: */
+ #if defined(__INCLUDE_FROM_MASSSTORAGE_HOST_C)
+ static uint8_t DCOMP_MS_Host_NextMSInterface(void* const CurrentDescriptor) ATTR_NON_NULL_PTR_ARG(1);
+ static uint8_t DCOMP_MS_Host_NextMSInterfaceEndpoint(void* const CurrentDescriptor) ATTR_NON_NULL_PTR_ARG(1);
+
+ static uint8_t MS_Host_SendCommand(USB_ClassInfo_MS_Host_t* const MSInterfaceInfo,
+ MS_CommandBlockWrapper_t* const SCSICommandBlock,
+ const void* const BufferPtr) ATTR_NON_NULL_PTR_ARG(1) ATTR_NON_NULL_PTR_ARG(2);
+ static uint8_t MS_Host_WaitForDataReceived(USB_ClassInfo_MS_Host_t* const MSInterfaceInfo) ATTR_NON_NULL_PTR_ARG(1);
+ static uint8_t MS_Host_SendReceiveData(USB_ClassInfo_MS_Host_t* const MSInterfaceInfo,
+ MS_CommandBlockWrapper_t* const SCSICommandBlock,
+ void* BufferPtr) ATTR_NON_NULL_PTR_ARG(1) ATTR_NON_NULL_PTR_ARG(2);
+ static uint8_t MS_Host_GetReturnedStatus(USB_ClassInfo_MS_Host_t* const MSInterfaceInfo,
+ MS_CommandStatusWrapper_t* const SCSICommandStatus)
+ ATTR_NON_NULL_PTR_ARG(1) ATTR_NON_NULL_PTR_ARG(2);
+ #endif
+ #endif
+
+ /* Disable C linkage for C++ Compilers: */
+ #if defined(__cplusplus)
+ }
+ #endif
+
+#endif
+
+/** @} */
+
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