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169 lines
7.9 KiB
169 lines
7.9 KiB
/*
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LUFA Library
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Copyright (C) Dean Camera, 2010.
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dean [at] fourwalledcubicle [dot] com
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www.fourwalledcubicle.com
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*/
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/*
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Copyright 2010 Dean Camera (dean [at] fourwalledcubicle [dot] com)
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Permission to use, copy, modify, distribute, and sell this
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software and its documentation for any purpose is hereby granted
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without fee, provided that the above copyright notice appear in
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all copies and that both that the copyright notice and this
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permission notice and warranty disclaimer appear in supporting
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documentation, and that the name of the author not be used in
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advertising or publicity pertaining to distribution of the
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software without specific, written prior permission.
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The author disclaim all warranties with regard to this
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software, including all implied warranties of merchantability
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and fitness. In no event shall the author be liable for any
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special, indirect or consequential damages or any damages
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whatsoever resulting from loss of use, data or profits, whether
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in an action of contract, negligence or other tortious action,
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arising out of or in connection with the use or performance of
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this software.
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*/
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/** \file
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* \brief Device mode driver for the library USB Mass Storage Class driver.
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*
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* Device mode driver for the library USB Mass Storage Class driver.
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*
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* \note This file should not be included directly. It is automatically included as needed by the class driver
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* dispatch header located in LUFA/Drivers/USB/Class/MassStorage.h.
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*/
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/** \ingroup Group_USBClassMS
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* @defgroup Group_USBClassMSDevice Mass Storage Class Device Mode Driver
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*
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* \section Sec_Dependencies Module Source Dependencies
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* The following files must be built with any user project that uses this module:
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* - LUFA/Drivers/USB/Class/Device/MassStorage.c
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*
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* \section Module Description
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* Device Mode USB Class driver framework interface, for the Mass Storage USB Class driver.
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*
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* @{
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*/
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#ifndef _MS_CLASS_DEVICE_H_
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#define _MS_CLASS_DEVICE_H_
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/* Includes: */
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#include "../../USB.h"
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#include "../Common/MassStorage.h"
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#include <string.h>
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/* Enable C linkage for C++ Compilers: */
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#if defined(__cplusplus)
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extern "C" {
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#endif
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/* Preprocessor Checks: */
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#if !defined(__INCLUDE_FROM_MS_DRIVER)
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#error Do not include this file directly. Include LUFA/Drivers/Class/MassStorage.h instead.
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#endif
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/* Public Interface - May be used in end-application: */
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/* Type Defines: */
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/** \brief Mass Storage Class Device Mode Configuration and State Structure.
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*
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* Class state structure. An instance of this structure should be made for each Mass Storage interface
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* within the user application, and passed to each of the Mass Storage class driver functions as the
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* MSInterfaceInfo parameter. This stores each Mass Storage interface's configuration and state information.
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*/
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typedef struct
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{
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const struct
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{
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uint8_t InterfaceNumber; /**< Interface number of the Mass Storage interface within the device. */
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uint8_t DataINEndpointNumber; /**< Endpoint number of the Mass Storage interface's IN data endpoint. */
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uint16_t DataINEndpointSize; /**< Size in bytes of the Mass Storage interface's IN data endpoint. */
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bool DataINEndpointDoubleBank; /**< Indicates if the Mass Storage interface's IN data endpoint should use double banking. */
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uint8_t DataOUTEndpointNumber; /**< Endpoint number of the Mass Storage interface's OUT data endpoint. */
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uint16_t DataOUTEndpointSize; /**< Size in bytes of the Mass Storage interface's OUT data endpoint. */
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bool DataOUTEndpointDoubleBank; /**< Indicates if the Mass Storage interface's OUT data endpoint should use double banking. */
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uint8_t TotalLUNs; /**< Total number of logical drives in the Mass Storage interface. */
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} Config; /**< Config data for the USB class interface within the device. All elements in this section
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* <b>must</b> be set or the interface will fail to enumerate and operate correctly.
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*/
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struct
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{
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MS_CommandBlockWrapper_t CommandBlock; /**< Mass Storage class command block structure, stores the received SCSI
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* command from the host which is to be processed.
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*/
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MS_CommandStatusWrapper_t CommandStatus; /**< Mass Storage class command status structure, set elements to indicate
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* the issued command's success or failure to the host.
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*/
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volatile bool IsMassStoreReset; /**< Flag indicating that the host has requested that the Mass Storage interface be reset
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* and that all current Mass Storage operations should immediately abort.
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*/
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} State; /**< State data for the USB class interface within the device. All elements in this section
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* are reset to their defaults when the interface is enumerated.
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*/
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} USB_ClassInfo_MS_Device_t;
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/* Function Prototypes: */
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/** Configures the endpoints of a given Mass Storage interface, ready for use. This should be linked to the library
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* \ref EVENT_USB_Device_ConfigurationChanged() event so that the endpoints are configured when the configuration
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* containing the given Mass Storage interface is selected.
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*
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* \param[in,out] MSInterfaceInfo Pointer to a structure containing a Mass Storage Class configuration and state.
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*
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* \return Boolean true if the endpoints were successfully configured, false otherwise.
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*/
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bool MS_Device_ConfigureEndpoints(USB_ClassInfo_MS_Device_t* const MSInterfaceInfo) ATTR_NON_NULL_PTR_ARG(1);
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/** Processes incoming control requests from the host, that are directed to the given Mass Storage class interface. This should be
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* linked to the library \ref EVENT_USB_Device_UnhandledControlRequest() event.
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*
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* \param[in,out] MSInterfaceInfo Pointer to a structure containing a Mass Storage Class configuration and state.
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*/
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void MS_Device_ProcessControlRequest(USB_ClassInfo_MS_Device_t* const MSInterfaceInfo) ATTR_NON_NULL_PTR_ARG(1);
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/** General management task for a given Mass Storage class interface, required for the correct operation of the interface. This should
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* be called frequently in the main program loop, before the master USB management task \ref USB_USBTask().
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*
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* \param[in,out] MSInterfaceInfo Pointer to a structure containing a Mass Storage configuration and state.
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*/
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void MS_Device_USBTask(USB_ClassInfo_MS_Device_t* const MSInterfaceInfo) ATTR_NON_NULL_PTR_ARG(1);
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/** Mass Storage class driver callback for the user processing of a received SCSI command. This callback will fire each time the
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* host sends a SCSI command which requires processing by the user application. Inside this callback the user is responsible
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* for the processing of the received SCSI command from the host. The SCSI command is available in the CommandBlock structure
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* inside the Mass Storage class state structure passed as a parameter to the callback function.
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*
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* \param[in,out] MSInterfaceInfo Pointer to a structure containing a Mass Storage Class configuration and state.
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*
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* \return Boolean true if the SCSI command was successfully processed, false otherwise.
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*/
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bool CALLBACK_MS_Device_SCSICommandReceived(USB_ClassInfo_MS_Device_t* const MSInterfaceInfo) ATTR_NON_NULL_PTR_ARG(1);
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/* Private Interface - For use in library only: */
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#if !defined(__DOXYGEN__)
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/* Function Prototypes: */
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#if defined(__INCLUDE_FROM_MS_CLASS_DEVICE_C)
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static void MS_Device_ReturnCommandStatus(USB_ClassInfo_MS_Device_t* const MSInterfaceInfo) ATTR_NON_NULL_PTR_ARG(1);
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static bool MS_Device_ReadInCommandBlock(USB_ClassInfo_MS_Device_t* const MSInterfaceInfo) ATTR_NON_NULL_PTR_ARG(1);
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static uint8_t StreamCallback_MS_Device_AbortOnMassStoreReset(void);
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#endif
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#endif
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/* Disable C linkage for C++ Compilers: */
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#if defined(__cplusplus)
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}
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#endif
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#endif
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/** @} */
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