[linux.git] / drivers / scsi / sr.h

/*
 *      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 
 *
 *      <[email protected]>
 *
 *       Modified by Eric Youngdale [email protected] to
 *       add scatter-gather, multiple outstanding request, and other
 *       enhancements.
 */

#ifndef _SR_H
#define _SR_H

#include <linux/genhd.h>
#include <linux/kref.h>

#define MAX_RETRIES	3
#define SR_TIMEOUT	(30 * HZ)

struct scsi_device;

/* The CDROM is fairly slow, so we need a little extra time */
/* In fact, it is very slow if it has to spin up first */
#define IOCTL_TIMEOUT 30*HZ


typedef struct scsi_cd {
	struct scsi_driver *driver;
	unsigned capacity;	/* size in blocks                       */
	struct scsi_device *device;
	unsigned int vendor;	/* vendor code, see sr_vendor.c         */
	unsigned long ms_offset;	/* for reading multisession-CD's        */
	unsigned use:1;		/* is this device still supportable     */
	unsigned xa_flag:1;	/* CD has XA sectors ? */
	unsigned readcd_known:1;	/* drive supports READ_CD (0xbe) */
	unsigned readcd_cdda:1;	/* reading audio data using READ_CD */
	unsigned previous_state:1;	/* media has changed */
	struct cdrom_device_info cdi;
	/* We hold gendisk and scsi_device references on probe and use
	 * the refs on this kref to decide when to release them */
	struct kref kref;
	struct gendisk *disk;
} Scsi_CD;

int sr_do_ioctl(Scsi_CD *, struct packet_command *);

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_select_speed(struct cdrom_device_info *cdi, int speed);
int sr_audio_ioctl(struct cdrom_device_info *, unsigned int, void *);

int sr_is_xa(Scsi_CD *);
int sr_test_unit_ready(struct scsi_device *sdev, struct scsi_sense_hdr *sshdr);

/* sr_vendor.c */
void sr_vendor_init(Scsi_CD *);
int sr_cd_check(struct cdrom_device_info *);
int sr_set_blocklength(Scsi_CD *, int blocklength);

#endif
Commit	Line	Data
1da177e4 LT	1	/*
	2	* sr.h by David Giller
	3	* CD-ROM disk driver header file
	4	*
	5	* adapted from:
	6	* sd.h Copyright (C) 1992 Drew Eckhardt
	7	* SCSI disk driver header file by
	8	* Drew Eckhardt
	9	*
	10	* <[email protected]>
	11	*
	12	* Modified by Eric Youngdale [email protected] to
	13	* add scatter-gather, multiple outstanding request, and other
	14	* enhancements.
	15	*/
	16
	17	#ifndef _SR_H
	18	#define _SR_H
	19
	20	#include <linux/genhd.h>
	21	#include <linux/kref.h>
	22
210ba1d1 JB	23	#define MAX_RETRIES 3
	24	#define SR_TIMEOUT (30 * HZ)
	25
1da177e4 LT	26	struct scsi_device;
	27
	28	/* The CDROM is fairly slow, so we need a little extra time */
	29	/* In fact, it is very slow if it has to spin up first */
	30	#define IOCTL_TIMEOUT 30*HZ
	31
	32
	33	typedef struct scsi_cd {
	34	struct scsi_driver *driver;
	35	unsigned capacity; /* size in blocks */
	36	struct scsi_device *device;
	37	unsigned int vendor; /* vendor code, see sr_vendor.c */
	38	unsigned long ms_offset; /* for reading multisession-CD's */
1da177e4 LT	39	unsigned use:1; /* is this device still supportable */
	40	unsigned xa_flag:1; /* CD has XA sectors ? */
	41	unsigned readcd_known:1; /* drive supports READ_CD (0xbe) */
	42	unsigned readcd_cdda:1; /* reading audio data using READ_CD */
285e9670	43	unsigned previous_state:1; /* media has changed */
1da177e4 LT	44	struct cdrom_device_info cdi;
	45	/* We hold gendisk and scsi_device references on probe and use
	46	* the refs on this kref to decide when to release them */
	47	struct kref kref;
	48	struct gendisk *disk;
	49	} Scsi_CD;
	50
	51	int sr_do_ioctl(Scsi_CD , struct packet_command );
	52
	53	int sr_lock_door(struct cdrom_device_info *, int);
	54	int sr_tray_move(struct cdrom_device_info *, int);
	55	int sr_drive_status(struct cdrom_device_info *, int);
	56	int sr_disk_status(struct cdrom_device_info *);
	57	int sr_get_last_session(struct cdrom_device_info , struct cdrom_multisession );
	58	int sr_get_mcn(struct cdrom_device_info , struct cdrom_mcn );
	59	int sr_reset(struct cdrom_device_info *);
	60	int sr_select_speed(struct cdrom_device_info *cdi, int speed);
	61	int sr_audio_ioctl(struct cdrom_device_info , unsigned int, void );
1da177e4 LT	62
1da177e4 LT	63	int sr_is_xa(Scsi_CD *);
38582a62	64	int sr_test_unit_ready(struct scsi_device sdev, struct scsi_sense_hdr sshdr);
1da177e4 LT	65
	66	/* sr_vendor.c */
	67	void sr_vendor_init(Scsi_CD *);
	68	int sr_cd_check(struct cdrom_device_info *);
	69	int sr_set_blocklength(Scsi_CD *, int blocklength);
	70
	71	#endif