/* SPDX-License-Identifier: GPL-2.0 */
/*
 *      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/mutex.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 {
        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;
        struct mutex lock;
        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, unsigned long 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