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 *      <drew@colorado.edu>
11 *
12 *       Modified by Eric Youngdale eric@andante.org 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
23struct scsi_device;
24
25/* The CDROM is fairly slow, so we need a little extra time */
26/* In fact, it is very slow if it has to spin up first */
27#define IOCTL_TIMEOUT 30*HZ
28
29
30typedef struct scsi_cd {
31	struct scsi_driver *driver;
32	unsigned capacity;	/* size in blocks                       */
33	struct scsi_device *device;
34	unsigned int vendor;	/* vendor code, see sr_vendor.c         */
35	unsigned long ms_offset;	/* for reading multisession-CD's        */
36	unsigned use:1;		/* is this device still supportable     */
37	unsigned xa_flag:1;	/* CD has XA sectors ? */
38	unsigned readcd_known:1;	/* drive supports READ_CD (0xbe) */
39	unsigned readcd_cdda:1;	/* reading audio data using READ_CD */
40	struct cdrom_device_info cdi;
41	/* We hold gendisk and scsi_device references on probe and use
42	 * the refs on this kref to decide when to release them */
43	struct kref kref;
44	struct gendisk *disk;
45} Scsi_CD;
46
47int sr_do_ioctl(Scsi_CD *, struct packet_command *);
48
49int sr_lock_door(struct cdrom_device_info *, int);
50int sr_tray_move(struct cdrom_device_info *, int);
51int sr_drive_status(struct cdrom_device_info *, int);
52int sr_disk_status(struct cdrom_device_info *);
53int sr_get_last_session(struct cdrom_device_info *, struct cdrom_multisession *);
54int sr_get_mcn(struct cdrom_device_info *, struct cdrom_mcn *);
55int sr_reset(struct cdrom_device_info *);
56int sr_select_speed(struct cdrom_device_info *cdi, int speed);
57int sr_audio_ioctl(struct cdrom_device_info *, unsigned int, void *);
58
59int sr_is_xa(Scsi_CD *);
60
61/* sr_vendor.c */
62void sr_vendor_init(Scsi_CD *);
63int sr_cd_check(struct cdrom_device_info *);
64int sr_set_blocklength(Scsi_CD *, int blocklength);
65
66#endif
67