1 /* SPDX-License-Identifier: GPL-2.0 */
4 * CD-ROM disk driver header file
7 * sd.h Copyright (C) 1992 Drew Eckhardt
8 * SCSI disk driver header file by
13 * Modified by Eric Youngdale eric@andante.org to
14 * add scatter-gather, multiple outstanding request, and other
21 #include <linux/genhd.h>
22 #include <linux/kref.h>
23 #include <linux/mutex.h>
26 #define SR_TIMEOUT (30 * HZ)
30 /* The CDROM is fairly slow, so we need a little extra time */
31 /* In fact, it is very slow if it has to spin up first */
32 #define IOCTL_TIMEOUT 30*HZ
35 typedef struct scsi_cd {
36 struct scsi_driver *driver;
37 unsigned capacity; /* size in blocks */
38 struct scsi_device *device;
39 unsigned int vendor; /* vendor code, see sr_vendor.c */
40 unsigned long ms_offset; /* for reading multisession-CD's */
41 unsigned writeable : 1;
42 unsigned use:1; /* is this device still supportable */
43 unsigned xa_flag:1; /* CD has XA sectors ? */
44 unsigned readcd_known:1; /* drive supports READ_CD (0xbe) */
45 unsigned readcd_cdda:1; /* reading audio data using READ_CD */
46 unsigned media_present:1; /* media is present */
48 /* GET_EVENT spurious event handling, blk layer guarantees exclusion */
49 int tur_mismatch; /* nr of get_event TUR mismatches */
50 bool tur_changed:1; /* changed according to TUR */
51 bool get_event_changed:1; /* changed according to GET_EVENT */
52 bool ignore_get_event:1; /* GET_EVENT is unreliable, use TUR */
54 struct cdrom_device_info cdi;
56 /* We hold gendisk and scsi_device references on probe and use
57 * the refs on this kref to decide when to release them */
62 #define sr_printk(prefix, cd, fmt, a...) \
63 sdev_prefix_printk(prefix, (cd)->device, (cd)->cdi.name, fmt, ##a)
65 int sr_do_ioctl(Scsi_CD *, struct packet_command *);
67 int sr_lock_door(struct cdrom_device_info *, int);
68 int sr_tray_move(struct cdrom_device_info *, int);
69 int sr_drive_status(struct cdrom_device_info *, int);
70 int sr_disk_status(struct cdrom_device_info *);
71 int sr_get_last_session(struct cdrom_device_info *, struct cdrom_multisession *);
72 int sr_get_mcn(struct cdrom_device_info *, struct cdrom_mcn *);
73 int sr_reset(struct cdrom_device_info *);
74 int sr_select_speed(struct cdrom_device_info *cdi, int speed);
75 int sr_audio_ioctl(struct cdrom_device_info *, unsigned int, void *);
77 int sr_is_xa(Scsi_CD *);
80 void sr_vendor_init(Scsi_CD *);
81 int sr_cd_check(struct cdrom_device_info *);
82 int sr_set_blocklength(Scsi_CD *, int blocklength);