brintos

brintos / linux-shallow public Read only

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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