Line data Source code
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 :
23 : #define MAX_RETRIES 3
24 : #define SR_TIMEOUT (30 * HZ)
25 :
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 */
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 */
43 : unsigned previous_state:1; /* media has changed */
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 1 : } 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 *);
62 :
63 : int sr_is_xa(Scsi_CD *);
64 : int sr_test_unit_ready(struct scsi_device *sdev, struct scsi_sense_hdr *sshdr);
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
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