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Linus Torvalds1da177e2005-04-16 15:20:36 -07001/*
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
James Bottomley210ba1d2008-01-05 10:39:51 -060023#define MAX_RETRIES 3
24#define SR_TIMEOUT (30 * HZ)
25
Linus Torvalds1da177e2005-04-16 15:20:36 -070026struct 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
33typedef 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 */
Linus Torvalds1da177e2005-04-16 15:20:36 -070039 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 */
Kay Sievers285e9672007-08-14 14:10:39 +020043 unsigned previous_state:1; /* media has changed */
Linus Torvalds1da177e2005-04-16 15:20:36 -070044 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
51int sr_do_ioctl(Scsi_CD *, struct packet_command *);
52
53int sr_lock_door(struct cdrom_device_info *, int);
54int sr_tray_move(struct cdrom_device_info *, int);
55int sr_drive_status(struct cdrom_device_info *, int);
56int sr_disk_status(struct cdrom_device_info *);
57int sr_get_last_session(struct cdrom_device_info *, struct cdrom_multisession *);
58int sr_get_mcn(struct cdrom_device_info *, struct cdrom_mcn *);
59int sr_reset(struct cdrom_device_info *);
60int sr_select_speed(struct cdrom_device_info *cdi, int speed);
61int sr_audio_ioctl(struct cdrom_device_info *, unsigned int, void *);
Linus Torvalds1da177e2005-04-16 15:20:36 -070062
63int sr_is_xa(Scsi_CD *);
James Bottomley38582a62008-02-06 13:01:58 -060064int sr_test_unit_ready(struct scsi_device *sdev, struct scsi_sense_hdr *sshdr);
Linus Torvalds1da177e2005-04-16 15:20:36 -070065
66/* sr_vendor.c */
67void sr_vendor_init(Scsi_CD *);
68int sr_cd_check(struct cdrom_device_info *);
69int sr_set_blocklength(Scsi_CD *, int blocklength);
70
71#endif