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257 lines
11 KiB
257 lines
11 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_USBClassMassStorageHost Mass Storage Class Host 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/Host/MassStorage.c
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*
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* \section Module Description
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* Host 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_HOST_H__
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#define __MS_CLASS_HOST_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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/* 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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/** Class state structure. An instance of this structure should be made within the user application,
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* and passed to each of the HID class driver functions as the HIDInterfaceInfo parameter. This
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* stores each HID 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 DataINPipeNumber; /**< Pipe number of the MS interface's IN data pipe */
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uint8_t DataOUTPipeNumber; /**< Pipe number of the MS interface's OUT data pipe */
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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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bool Active; /**< Indicates if the current interface instance is connected to an attached device, valid
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* after \ref HID_Host_ConfigurePipes() is called and the Host state machine is in the
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* Configured state
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*/
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uint8_t InterfaceNumber; /**< Interface index of the HID interface within the attached device */
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uint16_t DataINPipeSize; /**< Size in bytes of the MS interface's IN data pipe */
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uint16_t DataOUTPipeSize; /**< Size in bytes of the MS interface's OUT data pipe */
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uint32_t TransactionTag; /**< Current transaction tag for data synchronising of packets */
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} State; /**< State data for the USB class interface within the device. All elements in this section
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* <b>may</b> be set to initial values, but may 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_Host_t;
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/** Type define for a SCSI Sense structure. Structures of this type are filled out by the
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* device via the MassStore_RequestSense() function, indicating the current sense data of the
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* device (giving explicit error codes for the last issued command). For details of the
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* structure contents, refer to the SCSI specifications.
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*/
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typedef struct
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{
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uint8_t ReponseCode;
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uint8_t SegmentNumber;
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unsigned char SenseKey : 4;
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unsigned char _RESERVED1 : 1;
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unsigned char ILI : 1;
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unsigned char EOM : 1;
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unsigned char FileMark : 1;
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uint8_t Information[4];
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uint8_t AdditionalLength;
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uint8_t CmdSpecificInformation[4];
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uint8_t AdditionalSenseCode;
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uint8_t AdditionalSenseQualifier;
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uint8_t FieldReplaceableUnitCode;
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uint8_t SenseKeySpecific[3];
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} SCSI_Request_Sense_Response_t;
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/** Type define for a SCSI Inquiry structure. Structures of this type are filled out by the
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* device via the MassStore_Inquiry() function, retrieving the attached device's information.
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* For details of the structure contents, refer to the SCSI specifications.
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*/
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typedef struct
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{
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unsigned char DeviceType : 5;
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unsigned char PeripheralQualifier : 3;
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unsigned char _RESERVED1 : 7;
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unsigned char Removable : 1;
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uint8_t Version;
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unsigned char ResponseDataFormat : 4;
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unsigned char _RESERVED2 : 1;
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unsigned char NormACA : 1;
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unsigned char TrmTsk : 1;
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unsigned char AERC : 1;
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uint8_t AdditionalLength;
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uint8_t _RESERVED3[2];
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unsigned char SoftReset : 1;
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unsigned char CmdQue : 1;
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unsigned char _RESERVED4 : 1;
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unsigned char Linked : 1;
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unsigned char Sync : 1;
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unsigned char WideBus16Bit : 1;
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unsigned char WideBus32Bit : 1;
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unsigned char RelAddr : 1;
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uint8_t VendorID[8];
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uint8_t ProductID[16];
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uint8_t RevisionID[4];
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} SCSI_Inquiry_Response_t;
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/** SCSI capacity structure, to hold the total capacity of the device in both the number
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* of blocks in the current LUN, and the size of each block. This structure is filled by
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* the device when the MassStore_ReadCapacity() function is called.
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*/
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typedef struct
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{
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uint32_t Blocks; /**< Number of blocks in the addressed LUN of the device */
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uint32_t BlockSize; /**< Number of bytes in each block in the addressed LUN */
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} SCSI_Capacity_t;
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/* Enums: */
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enum
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{
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MS_ENUMERROR_NoError = 0, /**< Configuration Descriptor was processed successfully */
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MS_ENUMERROR_InvalidConfigDescriptor = 1, /**< The device returned an invalid Configuration Descriptor */
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MS_ENUMERROR_NoMSInterfaceFound = 2, /**< A compatible Mass Storage interface was not found in the device's Configuration Descriptor */
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MS_ENUMERROR_EndpointsNotFound = 3, /**< Compatible Mass Storage endpoints were not found in the device's interfaces */
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} MSHost_EnumerationFailure_ErrorCodes_t;
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/* Function Prototypes: */
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/** General management task for a given Mass Storage host class interface, required for the correct operation of
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* the interface. This should be called frequently in the main program loop, before the master USB management task
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* \ref USB_USBTask().
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*
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* \param[in,out] MSInterfaceInfo Pointer to a structure containing an MS Class host configuration and state
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*/
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void MS_Host_USBTask(USB_ClassInfo_MS_Host_t* MSInterfaceInfo) ATTR_NON_NULL_PTR_ARG(1);
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/** Host interface configuration routine, to configure a given Mass Storage host interface instance using the
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* Configuration Descriptor read from an attached USB device. This function automatically updates the given Mass
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* Storage Host instance's state values and configures the pipes required to communicate with the interface if it
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* is found within the device. This should be called once after the stack has enumerated the attached device, while
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* the host state machine is in the Addressed state.
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*
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* \param[in,out] MSInterfaceInfo Pointer to a structure containing an MS Class host configuration and state
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* \param[in] ConfigDescriptorLength Length of the attached device's Configuration Descriptor
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* \param[in] DeviceConfigDescriptor Pointer to a buffer containing the attached device's Configuration Descriptor
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*/
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uint8_t MS_Host_ConfigurePipes(USB_ClassInfo_MS_Host_t* MSInterfaceInfo, uint16_t ConfigDescriptorLength,
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uint8_t* DeviceConfigDescriptor) ATTR_NON_NULL_PTR_ARG(1, 3);
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/** Sends a MASS STORAGE RESET control request to the attached device, resetting the Mass Storage Interface
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* and readying it for the next Mass Storage command.
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*
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* \param[in,out] MSInterfaceInfo Pointer to a structure containing a MS Class host configuration and state
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*
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* \return A value from the \ref USB_Host_SendControlErrorCodes_t enum
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*/
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uint8_t MS_Host_ResetMSInterface(USB_ClassInfo_MS_Host_t* MSInterfaceInfo) ATTR_NON_NULL_PTR_ARG(1);
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uint8_t MS_Host_GetMaxLUN(USB_ClassInfo_MS_Host_t* MSInterfaceInfo, uint8_t* MaxLUNIndex) ATTR_NON_NULL_PTR_ARG(1, 2);
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uint8_t MS_Host_GetInquiryData(USB_ClassInfo_MS_Host_t* MSInterfaceInfo,
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SCSI_Inquiry_Response_t* InquiryData) ATTR_NON_NULL_PTR_ARG(1, 2);
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uint8_t MS_Host_TestUnitReady(USB_ClassInfo_MS_Host_t* MSInterfaceInfo, uint8_t LUNIndex,
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bool* DeviceReady) ATTR_NON_NULL_PTR_ARG(1, 3);
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uint8_t MS_Host_ReadDeviceCapacity(USB_ClassInfo_MS_Host_t* MSInterfaceInfo, uint8_t LUNIndex,
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SCSI_Capacity_t* DeviceCapacity) ATTR_NON_NULL_PTR_ARG(1, 3);
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/* Private Interface - For use in library only: */
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#if !defined(__DOXYGEN__)
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/* Macros: */
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#define MASS_STORE_CLASS 0x08
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#define MASS_STORE_SUBCLASS 0x06
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#define MASS_STORE_PROTOCOL 0x50
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#define REQ_MassStorageReset 0xFF
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#define REQ_GetMaxLUN 0xFE
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#define CBW_SIGNATURE 0x43425355UL
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#define CSW_SIGNATURE 0x53425355UL
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#define COMMAND_DIRECTION_DATA_OUT (0 << 7)
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#define COMMAND_DIRECTION_DATA_IN (1 << 7)
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#define COMMAND_DATA_TIMEOUT_MS 2000
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#define MS_FOUND_DATAPIPE_IN (1 << 0)
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#define MS_FOUND_DATAPIPE_OUT (1 << 1)
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/* Function Prototypes: */
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#if defined(INCLUDE_FROM_MS_CLASS_HOST_C)
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static uint8_t DComp_NextMassStorageInterface(void* CurrentDescriptor);
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static uint8_t DComp_NextInterfaceBulkDataEndpoint(void* CurrentDescriptor);
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static uint8_t MassStore_SendCommand(USB_ClassInfo_MS_Host_t* MSInterfaceInfo,
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MS_CommandBlockWrapper_t* SCSICommandBlock);
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static uint8_t MassStore_WaitForDataReceived(USB_ClassInfo_MS_Host_t* MSInterfaceInfo);
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static uint8_t MassStore_SendReceiveData(USB_ClassInfo_MS_Host_t* MSInterfaceInfo,
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MS_CommandBlockWrapper_t* SCSICommandBlock, void* BufferPtr);
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static uint8_t MassStore_GetReturnedStatus(USB_ClassInfo_MS_Host_t* MSInterfaceInfo,
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MS_CommandStatusWrapper_t* SCSICommandStatus);
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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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