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- /*
- * sr.h by David Giller
- * CD-ROM disk driver header file
- *
- * adapted from:
- * sd.h Copyright (C) 1992 Drew Eckhardt
- * SCSI disk driver header file by
- * Drew Eckhardt
- *
- * <drew@colorado.edu>
- *
- * Modified by Eric Youngdale eric@andante.org to
- * add scatter-gather, multiple outstanding request, and other
- * enhancements.
- */
- #ifndef _SR_H
- #define _SR_H
- #include <linux/genhd.h>
- #include <linux/kref.h>
- #define MAX_RETRIES 3
- #define SR_TIMEOUT (30 * HZ)
- struct scsi_device;
- /* The CDROM is fairly slow, so we need a little extra time */
- /* In fact, it is very slow if it has to spin up first */
- #define IOCTL_TIMEOUT 30*HZ
- typedef struct scsi_cd {
- struct scsi_driver *driver;
- unsigned capacity; /* size in blocks */
- struct scsi_device *device;
- unsigned int vendor; /* vendor code, see sr_vendor.c */
- unsigned long ms_offset; /* for reading multisession-CD's */
- unsigned writeable : 1;
- unsigned use:1; /* is this device still supportable */
- unsigned xa_flag:1; /* CD has XA sectors ? */
- unsigned readcd_known:1; /* drive supports READ_CD (0xbe) */
- unsigned readcd_cdda:1; /* reading audio data using READ_CD */
- unsigned media_present:1; /* media is present */
- /* GET_EVENT spurious event handling, blk layer guarantees exclusion */
- int tur_mismatch; /* nr of get_event TUR mismatches */
- bool tur_changed:1; /* changed according to TUR */
- bool get_event_changed:1; /* changed according to GET_EVENT */
- bool ignore_get_event:1; /* GET_EVENT is unreliable, use TUR */
- struct cdrom_device_info cdi;
- /* We hold gendisk and scsi_device references on probe and use
- * the refs on this kref to decide when to release them */
- struct kref kref;
- struct gendisk *disk;
- } Scsi_CD;
- #define sr_printk(prefix, cd, fmt, a...) \
- sdev_prefix_printk(prefix, (cd)->device, (cd)->cdi.name, fmt, ##a)
- int sr_do_ioctl(Scsi_CD *, struct packet_command *);
- int sr_lock_door(struct cdrom_device_info *, int);
- int sr_tray_move(struct cdrom_device_info *, int);
- int sr_drive_status(struct cdrom_device_info *, int);
- int sr_disk_status(struct cdrom_device_info *);
- int sr_get_last_session(struct cdrom_device_info *, struct cdrom_multisession *);
- int sr_get_mcn(struct cdrom_device_info *, struct cdrom_mcn *);
- int sr_reset(struct cdrom_device_info *);
- int sr_select_speed(struct cdrom_device_info *cdi, int speed);
- int sr_audio_ioctl(struct cdrom_device_info *, unsigned int, void *);
- int sr_is_xa(Scsi_CD *);
- /* sr_vendor.c */
- void sr_vendor_init(Scsi_CD *);
- int sr_cd_check(struct cdrom_device_info *);
- int sr_set_blocklength(Scsi_CD *, int blocklength);
- #endif
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