/*
 *      sr.h by David Giller
 *      CD-ROM disk driver header file
 *      
 *      adapted from:
 *	sd.h Copyright (C) 1992 Drew Eckhardt 
 *	SCSI disk driver header file by
 *		Drew Eckhardt 
 *
 *	<drew@colorado.edu>
 *
 *       Modified by Eric Youngdale eric@aib.com to
 *       add scatter-gather, multiple outstanding request, and other
 *       enhancements.
 */

#ifndef _SR_H
#define _SR_H

#include <linux/config.h>

#include "scsi.h"

typedef struct
	{
	unsigned 	capacity;		/* size in blocks 			*/
	unsigned 	sector_size;		/* size in bytes 			*/
	Scsi_Device  	*device;
        unsigned int    vendor;                 /* vendor code, see sr_vendor.c         */
	unsigned long   ms_offset;              /* for reading multisession-CD's        */
	unsigned char	sector_bit_size;	/* sector size = 2^sector_bit_size	*/
	unsigned char	sector_bit_shift;	/* sectors/FS block = 2^sector_bit_shift*/
	unsigned 	needs_sector_size:1;   	/* needs to get sector size */
	unsigned 	ten:1;			/* support ten byte commands		*/
	unsigned 	remap:1;		/* support remapping			*/
	unsigned 	use:1;			/* is this device still supportable	*/
	unsigned        xa_flag:1;              /* CD has XA sectors */
	struct cdrom_device_info cdi;
	} Scsi_CD;
	
extern Scsi_CD * scsi_CDs;

int sr_do_ioctl(int, unsigned char*, void*, unsigned);

int sr_lock_door(struct cdrom_device_info*, int);
int sr_tray_move(struct cdrom_device_info*, int);
int sr_drive_status(struct cdrom_device_info*, int);
int sr_disk_status(struct cdrom_device_info*);
int sr_get_last_session(struct cdrom_device_info*, struct cdrom_multisession*);
int sr_get_mcn(struct cdrom_device_info*, struct cdrom_mcn*);
int sr_reset(struct cdrom_device_info*);
int sr_audio_ioctl(struct cdrom_device_info*, unsigned int, void*);
int sr_dev_ioctl(struct cdrom_device_info*, unsigned int, unsigned long);

/* vendor-specific */
#ifdef CONFIG_BLK_DEV_SR_VENDOR
void sr_vendor_init(int minor);
int sr_cd_check(struct cdrom_device_info*);
#endif

#endif