cachepc-linux

Fork of AMDESE/linux with modifications for CachePC side-channel attack
git clone https://git.sinitax.com/sinitax/cachepc-linux
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sr.h (2558B)

      1/* SPDX-License-Identifier: GPL-2.0 */
      2/*
      3 *      sr.h by David Giller
      4 *      CD-ROM disk driver header file
      5 *      
      6 *      adapted from:
      7 *      sd.h Copyright (C) 1992 Drew Eckhardt 
      8 *      SCSI disk driver header file by
      9 *              Drew Eckhardt 
     10 *
     11 *      <drew@colorado.edu>
     12 *
     13 *       Modified by Eric Youngdale eric@andante.org to
     14 *       add scatter-gather, multiple outstanding request, and other
     15 *       enhancements.
     16 */
     17
     18#ifndef _SR_H
     19#define _SR_H
     20
     21#include <linux/mutex.h>
     22
     23#define MAX_RETRIES	3
     24#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*HZ
     31
     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, int 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#endif