devmscd.h

linux下的usb开发

/*************************************************************
 * Philips USB Mass Storage Class driver (Device side)
 *
 * (c) 2002 Koninklijke Philips Electronics N.V., All rights reserved
 * 
 * This  source code and any compilation or derivative thereof is the
 * proprietary information of Koninklijke Philips Electronics N.V.
 * and is confidential in nature.
 * Under no circumstances is this software to be exposed to or placed
 * under an Open Source License of any type without the expressed
 * written permission of Koninklijke Philips Electronics N.V.
 *
 * File Name:   devmscd.h
 *
 * History:
 *
 *  Version Date        Author      Comments
 * -------------------------------------------------
 *  1.0     09/23/02    SYARRA      Initial Creation
 *
 * Note: use tab space 4
 *************************************************************/

#ifndef __DEVMSCD_H__
#define	__DEVMSCD_H__

/* 
 * Mass Storage (BOT) class commands
 */
#define		DEVMSCD_GET_MAX_LUN			0xFE
#define		DEVMSCD_MS_RESET			0xFF

/*
 * Mass storage class sates
 * State Transistion
 *                           | --------------------
 *                          IDLE                  |
 *                           |                    |
 *                          CBW                   |
 *                           |                    |
 *                     ----------------           |
 *                     |              |           |
 *                  DATA_IN        DATA_OUT       |
 *                     |              |           |
 *                     ----------------           |
 *                            |                   |
 *                           CSW                  |
 *                            |--------------------
 */
#define		DEVMSCD_IDLE				0x00		/* Idle, no command */
#define		DEVMSCD_CBW					0x01		/* Received command */
#define		DEVMSCD_CSW					0x02		/* Status Stage */
#define		DEVMSCD_DATA_IN				0x03		/* DATA IN stage */
#define		DEVMSCD_DATA_OUT			0x04		/* DATA OUT State */

/*
 * message lengths
 */
#define		DEVMSCD_CBW_LENGTH			0x1F		/* CBW length */
#define		DEVMSCD_CSW_LENGTH			0x0D		/* CSW length */
#define		DEVMSCD_CBW_WRAPPER			0x0F		/* CBWCB start point */

/*
 * Signatures (little Indian)
 */
#define		DEVMSCD_CBWSIGNATURE		0x43425355		/* CBW Signature */
#define		DEVMSCD_CSWSIGNATURE		0x53425355		/* CSW Signature */

/*
 * CBW Flag vlaues
 */
#define		DEVMSCD_CBWFLAG_OUT			0x00		/* Data out from Host */
#define		DEVMSCD_CBWFLAG_IN 			0x80		/* Data In to Host */

typedef struct devmscd_device {
	__u8		state;					/* Mass storage BOT state */
	__u8		data_in_pipe;			/* Bulk In pipe (DATA IN) */
	__u8		data_out_pipe;			/* Bulk Out Pipe (DATA OUT) */
	__u32		tx_residue;				/* Transfer residue */
	__u8		status_queue;			/* command status queue flag */

	__u8		cbw[DEVMSCD_CBW_LENGTH];	/* Command Block Word */
	__u8		csw[DEVMSCD_CSW_LENGTH];	/* Command Status Word */
} devmscd_dev_t;


/* 
 * Driver definitions
 */
#define DRIVER_AUTHOR 		"Philips Semiconductors"
#define	DRIVER_DESC			"USB Mass storage Class Driver (Device)"
#define DEVMSCD_VERSION 	"1.0"
#define	DRIVER_NAME			"devmscd"

#include "hal_intf.h"

#endif /* __DEVMSCD_H__ */