alauda.h

LINUX下USB驱动程序的开发

/*
 * Driver for Alauda-based card readers
 *
 * Current development and maintenance by:
 *    (c) 2005 Daniel Drake <[e-mail]>
 *
 * See alauda.c for more explanation.
 *
 * This program is free software; you can redistribute it and/or modify it
 * under the terms of the GNU General Public License as published by the
 * Free Software Foundation; either version 2, or (at your option) any
 * later version.
 *
 * This program is distributed in the hope that it will be useful, but
 * WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License along
 * with this program; if not, write to the Free Software Foundation, Inc.,
 * 675 Mass Ave, Cambridge, MA 02139, USA.
 */

#ifndef _USB_ALAUDA_H
#define _USB_ALAUDA_H

/*
 * Status bytes
 */
#define ALAUDA_STATUS_ERROR		0x01
#define ALAUDA_STATUS_READY		0x40

/*
 * Control opcodes (for request field)
 */
#define ALAUDA_GET_XD_MEDIA_STATUS	0x08
#define ALAUDA_GET_SM_MEDIA_STATUS	0x98
#define ALAUDA_ACK_XD_MEDIA_CHANGE	0x0a
#define ALAUDA_ACK_SM_MEDIA_CHANGE	0x9a
#define ALAUDA_GET_XD_MEDIA_SIG		0x86
#define ALAUDA_GET_SM_MEDIA_SIG		0x96

/*
 * Bulk command identity (byte 0)
 */
#define ALAUDA_BULK_CMD			0x40

/*
 * Bulk opcodes (byte 1)
 */
#define ALAUDA_BULK_GET_REDU_DATA	0x85
#define ALAUDA_BULK_READ_BLOCK		0x94
#define ALAUDA_BULK_ERASE_BLOCK		0xa3
#define ALAUDA_BULK_WRITE_BLOCK		0xb4
#define ALAUDA_BULK_GET_STATUS2		0xb7
#define ALAUDA_BULK_RESET_MEDIA		0xe0

/*
 * Port to operate on (byte 8)
 */
#define ALAUDA_PORT_XD			0x00
#define ALAUDA_PORT_SM			0x01

/*
 * LBA and PBA are unsigned ints. Special values.
 */
#define UNDEF    0xffff
#define SPARE    0xfffe
#define UNUSABLE 0xfffd

int init_alauda(struct us_data *us);
int alauda_transport(struct scsi_cmnd *srb, struct us_data *us);

struct alauda_media_info {
	unsigned long capacity;		/* total media size in bytes */
	unsigned int pagesize;		/* page size in bytes */
	unsigned int blocksize;		/* number of pages per block */
	unsigned int uzonesize;		/* number of usable blocks per zone */
	unsigned int zonesize;		/* number of blocks per zone */
	unsigned int blockmask;		/* mask to get page from address */

	unsigned char pageshift;
	unsigned char blockshift;
	unsigned char zoneshift;

	u16 **lba_to_pba;		/* logical to physical block map */
	u16 **pba_to_lba;		/* physical to logical block map */
};

struct alauda_info {
	struct alauda_media_info port[2];
	int wr_ep;			/* endpoint to write data out of */

	unsigned char sense_key;
	unsigned long sense_asc;	/* additional sense code */
	unsigned long sense_ascq;	/* additional sense code qualifier */
};

#endif