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/* ucdrom.h. Uniform cdrom data structures for cdrom.c.         -*- linux-c -*-

   Copyright (c) 1996 David van Leeuwen.

 */

#ifndef LINUX_UCDROM_H

#define LINUX_UCDROM_H

#ifdef __KERNEL__

struct cdrom_device_ops {

/* routines */

        int (*open) (kdev_t, int);

        void (*release) (kdev_t);

        int (*open_files) (kdev_t);      /* number of open files */

        int (*drive_status) (kdev_t);

        int (*disc_status) (kdev_t);

        int (*media_changed) (kdev_t);

        int (*tray_move) (kdev_t, int);

        int (*lock_door) (kdev_t, int);

        int (*select_speed) (kdev_t, int);

        int (*select_disc) (kdev_t, int);

        int (*get_last_session) (kdev_t, struct cdrom_multisession *);

        int (*get_mcn) (kdev_t, struct cdrom_mcn *);

        int (*reset) (kdev_t dev);       /* hard reset device */

        int (*audio_ioctl) (kdev_t, unsigned int, void *); /* play stuff */

        int (*dev_ioctl) (kdev_t, unsigned int, unsigned long); /* dev-specific */

/* specifications */

        const int capability;           /* capability flags */

        int mask;                       /* mask of capability: disables them */

        const int speed;                /* maximum speed for reading data */

        const int minors;               /* number of minor devs supported */

        const int capacity;             /* number of discs in jukebox */

/* device-related storage */

        int options;                    /* options flags */

        long mc_flags;                  /* media change buffer flags (2*16) */

};

#endif

/* capability flags */

#define CDC_CLOSE_TRAY  0x1             /* caddy systems _can't_ close */

#define CDC_OPEN_TRAY   0x2             /* but _can_ eject.  */

#define CDC_LOCK        0x4             /* disable manual eject */

#define CDC_SELECT_SPEED 0x8            /* programmable speed */

#define CDC_SELECT_DISC 0x10            /* select disc from juke-box */

#define CDC_MULTI_SESSION 0x20          /* read sessions>1 */

#define CDC_MCN         0x40            /* Medium Catalog Number */

#define CDC_MEDIA_CHANGED 0x80          /* media changed */

#define CDC_PLAY_AUDIO  0x100           /* audio functions */

/* drive status possibilities */

#define CDS_NO_INFO     0               /* if not implemented */

#define CDS_NO_DISC     1

#define CDS_TRAY_OPEN   2

#define CDS_DRIVE_NOT_READY     3

#define CDS_DISC_OK     4

/* disc status possibilities, other than CDS_NO_DISC */

#define CDS_AUDIO       100

#define CDS_DATA_1      101

#define CDS_DATA_2      102

#define CDS_XA_2_1      103

#define CDS_XA_2_2      104

/* User-configurable behavior options */

#define CDO_AUTO_CLOSE  0x1             /* close tray on first open() */

#define CDO_AUTO_EJECT  0x2             /* open tray on last release() */

#define CDO_USE_FFLAGS  0x4             /* use O_NONBLOCK information on open */

#define CDO_LOCK        0x8             /* lock tray on open files */

#define CDO_CHECK_TYPE  0x10            /* check type on open for data */

/* Some more ioctls to control these options */

#define CDROM_SET_OPTIONS       0x5320

#define CDROM_CLEAR_OPTIONS     0x5321

#define CDROM_SELECT_SPEED      0x5322  /* head-speed */

#define CDROM_SELECT_DISC       0x5323  /* for juke-boxes */

#define CDROM_MEDIA_CHANGED     0x5325

#define CDROM_DRIVE_STATUS      0x5326  /* tray position, etc. */

#define CDROM_DISC_STATUS       0x5327  /* disc type etc. */

/* Rename an old ioctl */

#define CDROM_GET_MCN   CDROM_GET_UPC   /* medium catalog number */

#ifdef __KERNEL__

/* the general file operations structure: */

extern struct file_operations cdrom_fops;

extern int register_cdrom(int major, char *name,

                          struct cdrom_device_ops *cdo);

extern int unregister_cdrom(int major, char *name);

#endif

#endif  /* LINUX_UCDROM_H */

/*

 * Local variables:

 * comment-column: 40

 * End:

 */