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1/* SPDX-License-Identifier: GPL-2.0 */2/*3 * sr.h by David Giller4 * CD-ROM disk driver header file5 * 6 * adapted from:7 * sd.h Copyright (C) 1992 Drew Eckhardt 8 * SCSI disk driver header file by9 * Drew Eckhardt 10 *11 * <drew@colorado.edu>12 *13 * Modified by Eric Youngdale eric@andante.org to14 * add scatter-gather, multiple outstanding request, and other15 * enhancements.16 */17 18#ifndef _SR_H19#define _SR_H20 21#include <linux/mutex.h>22 23#define MAX_RETRIES 324#define SR_TIMEOUT (30 * HZ)25 26struct 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*HZ31 32 33typedef struct scsi_cd {34 unsigned capacity; /* size in blocks */35 struct scsi_device *device;36 unsigned int vendor; /* vendor code, see sr_vendor.c */37 unsigned long ms_offset; /* for reading multisession-CD's */38 unsigned writeable : 1;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 */44 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 */50 51 struct cdrom_device_info cdi;52 struct mutex lock;53 struct gendisk *disk;54} Scsi_CD;55 56#define sr_printk(prefix, cd, fmt, a...) \57 sdev_prefix_printk(prefix, (cd)->device, (cd)->cdi.name, fmt, ##a)58 59int sr_do_ioctl(Scsi_CD *, struct packet_command *);60 61int sr_lock_door(struct cdrom_device_info *, int);62int sr_tray_move(struct cdrom_device_info *, int);63int sr_drive_status(struct cdrom_device_info *, int);64int sr_disk_status(struct cdrom_device_info *);65int sr_get_last_session(struct cdrom_device_info *, struct cdrom_multisession *);66int sr_get_mcn(struct cdrom_device_info *, struct cdrom_mcn *);67int sr_reset(struct cdrom_device_info *);68int sr_select_speed(struct cdrom_device_info *cdi, unsigned long speed);69int sr_audio_ioctl(struct cdrom_device_info *, unsigned int, void *);70 71int sr_is_xa(Scsi_CD *);72 73/* sr_vendor.c */74void sr_vendor_init(Scsi_CD *);75int sr_cd_check(struct cdrom_device_info *);76int sr_set_blocklength(Scsi_CD *, int blocklength);77 78#endif79