diff options
Diffstat (limited to 'include/linux/ucdrom.h')
| -rw-r--r-- | include/linux/ucdrom.h | 114 |
1 files changed, 114 insertions, 0 deletions
diff --git a/include/linux/ucdrom.h b/include/linux/ucdrom.h new file mode 100644 index 000000000..6cf5c05b3 --- /dev/null +++ b/include/linux/ucdrom.h @@ -0,0 +1,114 @@ +/* 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_info { + struct cdrom_device_ops *ops; /* link to device_ops */ + struct cdrom_device_info *next; /* next device_info for this major */ + void *handle; /* driver-dependent data */ +/* specifications */ + kdev_t dev; /* device number */ + int mask; /* mask of capability: disables them */ + int speed; /* maximum speed for reading data */ + int capacity; /* number of discs in jukebox */ +/* device-related storage */ + int options : 30; /* options flags */ + unsigned mc_flags : 2; /* media change buffer flags */ + int use_count; /* number of times device opened */ +}; + +struct cdrom_device_ops { +/* routines */ + int (*open) (struct cdrom_device_info *, int); + void (*release) (struct cdrom_device_info *); + int (*drive_status) (struct cdrom_device_info *, int); + int (*disc_status) (struct cdrom_device_info *); + int (*media_changed) (struct cdrom_device_info *, int); + int (*tray_move) (struct cdrom_device_info *, int); + int (*lock_door) (struct cdrom_device_info *, int); + int (*select_speed) (struct cdrom_device_info *, int); + int (*select_disc) (struct cdrom_device_info *, int); + int (*get_last_session) (struct cdrom_device_info *, + struct cdrom_multisession *); + int (*get_mcn) (struct cdrom_device_info *, + struct cdrom_mcn *); + /* hard reset device */ + int (*reset) (struct cdrom_device_info *); + /* play stuff */ + int (*audio_ioctl) (struct cdrom_device_info *,unsigned int, void *); + /* dev-specific */ + int (*dev_ioctl) (struct cdrom_device_info *, + unsigned int, unsigned long); +/* driver specifications */ + const int capability; /* capability flags */ + int n_minors; /* number of active minor devices */ +}; +#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 */ + +/* Special codes for specifying changer slots. */ +#define CDSL_NONE ((int) (~0U>>1)-1) +#define CDSL_CURRENT ((int) (~0U>>1)) + +/* 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. */ +#define CDROM_CHANGER_NSLOTS 0x5328 + +/* 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(struct cdrom_device_info *cdi, char *name); +extern int unregister_cdrom(struct cdrom_device_info *cdi); +#endif + +#endif /* LINUX_UCDROM_H */ +/* + * Local variables: + * comment-column: 40 + * End: + */ |