3 * CD-ROM disk driver header file
6 * sd.h Copyright (C) 1992 Drew Eckhardt
7 * SCSI disk driver header file by
12 * Modified by Eric Youngdale eric@andante.org to
13 * add scatter-gather, multiple outstanding request, and other
20 #include <linux/genhd.h>
21 #include <linux/kref.h>
24 #define SR_TIMEOUT (30 * HZ)
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
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 media_present
:1; /* media is present */
45 /* GET_EVENT spurious event handling, blk layer guarantees exclusion */
46 int tur_mismatch
; /* nr of get_event TUR mismatches */
47 bool tur_changed
:1; /* changed according to TUR */
48 bool get_event_changed
:1; /* changed according to GET_EVENT */
49 bool ignore_get_event
:1; /* GET_EVENT is unreliable, use TUR */
51 struct cdrom_device_info cdi
;
52 /* We hold gendisk and scsi_device references on probe and use
53 * the refs on this kref to decide when to release them */
58 int sr_do_ioctl(Scsi_CD
*, struct packet_command
*);
60 int sr_lock_door(struct cdrom_device_info
*, int);
61 int sr_tray_move(struct cdrom_device_info
*, int);
62 int sr_drive_status(struct cdrom_device_info
*, int);
63 int sr_disk_status(struct cdrom_device_info
*);
64 int sr_get_last_session(struct cdrom_device_info
*, struct cdrom_multisession
*);
65 int sr_get_mcn(struct cdrom_device_info
*, struct cdrom_mcn
*);
66 int sr_reset(struct cdrom_device_info
*);
67 int sr_select_speed(struct cdrom_device_info
*cdi
, int speed
);
68 int sr_audio_ioctl(struct cdrom_device_info
*, unsigned int, void *);
70 int sr_is_xa(Scsi_CD
*);
73 void sr_vendor_init(Scsi_CD
*);
74 int sr_cd_check(struct cdrom_device_info
*);
75 int sr_set_blocklength(Scsi_CD
*, int blocklength
);
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