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160 lines
7.6 KiB
160 lines
7.6 KiB
/*
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LUFA Library
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Copyright (C) Dean Camera, 2009.
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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 2009 Dean Camera (dean [at] fourwalledcubicle [dot] com)
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Permission to use, copy, modify, and distribute this software
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and its documentation for any purpose and without fee is hereby
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granted, provided that the above copyright notice appear in all
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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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/** \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 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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/* Public Interface - May be used in end-application: */
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/* Type Defines: */
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/** Configuration information structure for \ref USB_ClassInfo_MS_Device_t Mass Storage device interface structures. */
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typedef 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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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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uint8_t TotalLUNs; /**< Total number of logical drives in the Mass Storage interface */
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} USB_ClassInfo_MS_Device_Config_t;
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/** Current State information structure for \ref USB_ClassInfo_MS_Device_t Mass Storage device interface structures. */
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typedef struct
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{
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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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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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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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} USB_ClassInfo_MS_Device_State_t;
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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 USB_ClassInfo_MS_Device_Config_t Config; /**< Config data for the USB class interface within
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* the device. All elements in this section
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* <b>must</b> be set or the interface will fail
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* to enumerate and operate correctly.
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*/
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USB_ClassInfo_MS_Device_State_t State; /**< State data for the USB class interface within
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* the device. All elements in this section
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* <b>may</b> be set to initial values, but may
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* also be ignored to default to sane values when
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* 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_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 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 sucessfully configured, false otherwise
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*/
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bool MS_Device_ConfigureEndpoints(USB_ClassInfo_MS_Device_t* MSInterfaceInfo);
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/** Processes incomming 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_UnhandledControlPacket() event.
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*
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* \param MSInterfaceInfo Pointer to a structure containing a Mass Storage Class configuration and state.
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*/
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void MS_Device_ProcessControlPacket(USB_ClassInfo_MS_Device_t* MSInterfaceInfo);
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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 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* MSInterfaceInfo);
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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 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* MSInterfaceInfo);
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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* MSInterfaceInfo);
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static bool MS_Device_ReadInCommandBlock(USB_ClassInfo_MS_Device_t* MSInterfaceInfo);
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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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