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/*
* Mach Operating System
* Copyright (c) 1987 Carnegie-Mellon University
* All rights reserved. The CMU software License Agreement specifies
* the terms and conditions for use and redistribution.
*/
/*
**********************************************************************
* HISTORY
* 27-Mar-90 Doug Mitchell
* Added MT_ISGS, MT_ISEXB
*
* 27-Feb-89 Doug Mitchell at NeXT
* Added extended error fields in mtget
*
* 23-Feb-89 Doug Mitchell at NeXT
* Added NeXT-specific SCSI mt_ops
*
* 25-Jan-86 Avadis Tevanian (avie) at Carnegie-Mellon University
* Upgraded to 4.3
*
************************************************************************
*/
/*
* Copyright (c) 1982, 1986 Regents of the University of California.
* All rights reserved. The Berkeley software License Agreement
* specifies the terms and conditions for redistribution.
*
* @(#)mtio.h 7.1 (Berkeley) 6/4/86
*/
/*
* Structures and definitions for mag tape io control commands
*/
#ifndef _MTIO_
#define _MTIO_
/* structure for MTIOCTOP - mag tape op command */
struct mtop {
short mt_op; /* operations defined below */
daddr_t mt_count; /* how many of them */
};
/* operations */
#define MTWEOF 0 /* write an end-of-file record */
#define MTFSF 1 /* forward space file */
#define MTBSF 2 /* backward space file */
#define MTFSR 3 /* forward space record */
#define MTBSR 4 /* backward space record */
#define MTREW 5 /* rewind */
#define MTOFFL 6 /* rewind and put the drive offline */
#define MTNOP 7 /* no operation, sets status only */
#define MTCACHE 8 /* enable controller cache */
#define MTNOCACHE 9 /* disable controller cache */
/*
* Additional NeXT-specific SCSI ops.
*/
#ifdef NeXT
#define MTRETEN 10 /* retension the tape */
#define MTERASE 11 /* erase the entire tape */
#endif
/* structure for MTIOCGET - mag tape get status command */
struct mtget {
short mt_type; /* type of magtape device */
/* the following four registers are grossly device dependent */
u_short mt_dsreg; /* ``drive status'' register. SCSI sense byte
* 0x02. */
u_short mt_erreg; /* ``error'' register. SCSI sense byte 0x0C. */
u_short mt_ext_err0; /* SCSI sense bytes 0x13..0x14 */
u_short mt_ext_err1; /* SCSI sense bytes 0x15..0x16 */
/* end device-dependent registers */
u_int mt_resid; /* residual count. SCSI Info bytes. */
/* the following two are not yet implemented */
daddr_t mt_fileno; /* file number of current position */
daddr_t mt_blkno; /* block number of current position */
/* end not yet implemented */
};
/*
* Constants for mt_type byte. These are the same
* for controllers compatible with the types listed.
*/
#define MT_ISTS 0x01 /* TS-11 */
#define MT_ISHT 0x02 /* TM03 Massbus: TE16, TU45, TU77 */
#define MT_ISTM 0x03 /* TM11/TE10 Unibus */
#define MT_ISMT 0x04 /* TM78/TU78 Massbus */
#define MT_ISUT 0x05 /* SI TU-45 emulation on Unibus */
#define MT_ISCPC 0x06 /* SUN */
#define MT_ISAR 0x07 /* SUN */
#define MT_ISTMSCP 0x08 /* DEC TMSCP protocol (TU81, TK50) */
#define MT_ISGS 0x09 /* Generic SCSI Tape */
#define MT_ISEXB 0x0A /* Exabyte Tape */
/* mag tape io control commands */
#define MTIOCTOP _IOW('m', 1, struct mtop) /* do a mag tape op */
#define MTIOCGET _IOR('m', 2, struct mtget) /* get tape status */
#define MTIOCIEOT _IO('m', 3) /* ignore EOT error */
#define MTIOCEEOT _IO('m', 4) /* enable EOT error */
#ifndef KERNEL
#define DEFTAPE "/dev/rxt0"
#endif
#endif
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