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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 needs_sector_size:1; /* needs to get sector size */
37 unsigned use:1; /* is this device still supportable */
38 unsigned xa_flag:1; /* CD has XA sectors ? */
39 unsigned readcd_known:1; /* drive supports READ_CD (0xbe) */
40 unsigned readcd_cdda:1; /* reading audio data using READ_CD */
41 struct cdrom_device_info cdi;
42 /* We hold gendisk and scsi_device references on probe and use
43 * the refs on this kref to decide when to release them */
44 struct kref kref;
45 struct gendisk *disk;
46} Scsi_CD;
47
48int sr_do_ioctl(Scsi_CD *, struct packet_command *);
49
50int sr_lock_door(struct cdrom_device_info *, int);
51int sr_tray_move(struct cdrom_device_info *, int);
52int sr_drive_status(struct cdrom_device_info *, int);
53int sr_disk_status(struct cdrom_device_info *);
54int sr_get_last_session(struct cdrom_device_info *, struct cdrom_multisession *);
55int sr_get_mcn(struct cdrom_device_info *, struct cdrom_mcn *);
56int sr_reset(struct cdrom_device_info *);
57int sr_select_speed(struct cdrom_device_info *cdi, int speed);
58int sr_audio_ioctl(struct cdrom_device_info *, unsigned int, void *);
59int sr_dev_ioctl(struct cdrom_device_info *, unsigned int, unsigned long);
60
61int sr_is_xa(Scsi_CD *);
62
63/* sr_vendor.c */
64void sr_vendor_init(Scsi_CD *);
65int sr_cd_check(struct cdrom_device_info *);
66int sr_set_blocklength(Scsi_CD *, int blocklength);
67
68#endif