1/* $NetBSD: mtio.h,v 1.24 2015/09/06 06:01:02 dholland Exp $ */
2
3/*
4 * Copyright (c) 1982, 1986, 1993
5 * The Regents of the University of California. All rights reserved.
6 *
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
9 * are met:
10 * 1. Redistributions of source code must retain the above copyright
11 * notice, this list of conditions and the following disclaimer.
12 * 2. Redistributions in binary form must reproduce the above copyright
13 * notice, this list of conditions and the following disclaimer in the
14 * documentation and/or other materials provided with the distribution.
15 * 3. Neither the name of the University nor the names of its contributors
16 * may be used to endorse or promote products derived from this software
17 * without specific prior written permission.
18 *
19 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
20 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
21 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
22 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
23 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
24 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
25 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
26 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
27 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
28 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
29 * SUCH DAMAGE.
30 *
31 * @(#)mtio.h 8.1 (Berkeley) 6/2/93
32 */
33
34#ifndef _SYS_MTIO_H_
35#define _SYS_MTIO_H_
36
37#include <sys/ioccom.h>
38
39/*
40 * Structures and definitions for mag tape io control commands
41 */
42
43/* structure for MTIOCTOP - mag tape op command */
44struct mtop {
45 short mt_op; /* operations defined below */
46 int32_t mt_count; /* how many of them */
47};
48
49/* operations */
50#define MTWEOF 0 /* write an end-of-file record */
51#define MTFSF 1 /* forward space file */
52#define MTBSF 2 /* backward space file */
53#define MTFSR 3 /* forward space record */
54#define MTBSR 4 /* backward space record */
55#define MTREW 5 /* rewind */
56#define MTOFFL 6 /* rewind and put the drive offline */
57#define MTNOP 7 /* no operation, sets status only */
58#define MTRETEN 8 /* retension */
59#define MTERASE 9 /* erase entire tape */
60#define MTEOM 10 /* forward to end of media */
61#define MTNBSF 11 /* backward space to beginning of file */
62#define MTCACHE 12 /* enable controller cache */
63#define MTNOCACHE 13 /* disable controller cache */
64#define MTSETBSIZ 14 /* set block size; 0 for variable */
65#define MTSETDNSTY 15 /* set density code for current mode */
66#define MTCMPRESS 16 /* set/clear device compression */
67#define MTEWARN 17 /* set/clear early warning behaviour */
68
69/* structure for MTIOCGET - mag tape get status command */
70
71struct mtget {
72 short mt_type; /* type of magtape device */
73/* the following two registers are grossly device dependent */
74 short mt_dsreg; /* ``drive status'' register */
75 short mt_erreg; /* ``error'' register */
76/* end device-dependent registers */
77 short mt_resid; /* residual count */
78/* the following two are not yet implemented by most tape drivers */
79 int32_t mt_fileno; /* file number of current position */
80 int32_t mt_blkno; /* block number of current position */
81/* end not yet implemented */
82 int32_t mt_blksiz; /* current block size */
83 int32_t mt_density; /* current density code */
84 int32_t mt_mblksiz[4]; /* block size for different modes */
85 int32_t mt_mdensity[4]; /* density codes for different modes */
86};
87
88/*
89 * Constants for mt_type byte. These are the same
90 * for controllers compatible with the types listed.
91 */
92#define MT_ISTS 0x01 /* TS-11 */
93#define MT_ISHT 0x02 /* TM03 Massbus: TE16, TU45, TU77 */
94#define MT_ISTM 0x03 /* TM11/TE10 Unibus */
95#define MT_ISMT 0x04 /* TM78/TU78 Massbus */
96#define MT_ISUT 0x05 /* SI TU-45 emulation on Unibus */
97#define MT_ISCPC 0x06 /* SUN */
98#define MT_ISAR 0x07 /* SUN - Also "GENERIC SCSI" */
99#define MT_ISTMSCP 0x08 /* DEC TMSCP protocol (TU81, TK50) */
100#define MT_ISCY 0x09 /* CCI Cipher */
101#define MT_ISCT 0x0a /* HP 1/4 tape */
102#define MT_ISFHP 0x0b /* HP 7980 1/2 tape */
103#define MT_ISEXABYTE 0x0c /* Exabyte */
104#define MT_ISEXA8200 0x0c /* Exabyte EXB-8200 */
105#define MT_ISEXA8500 0x0d /* Exabyte EXB-8500 */
106#define MT_ISVIPER1 0x0e /* Archive Viper-150 */
107#define MT_ISPYTHON 0x0f /* Archive Python (DAT) */
108#define MT_ISHPDAT 0x10 /* HP 35450A DAT drive */
109#define MT_ISWANGTEK 0x11 /* WANGTEK 5150ES */
110#define MT_ISCALIPER 0x12 /* Caliper CP150 */
111#define MT_ISWTEK5099 0x13 /* WANGTEK 5099ES */
112#define MT_ISVIPER2525 0x14 /* Archive Viper 2525 */
113#define MT_ISMFOUR 0x11 /* M4 Data 1/2 9track drive */
114#define MT_ISTK50 0x12 /* DEC SCSI TK50 */
115#define MT_ISMT02 0x13 /* Emulex MT02 SCSI tape controller */
116
117/* bits defined for the mt_dsreg field */
118#define MT_DS_RDONLY 0x10 /* tape mounted readonly */
119#define MT_DS_MOUNTED 0x03 /* tape mounted (for control opens) */
120
121/*
122 * For the mt_erreg field.....This is supposed to be a *generic*
123 * MT interface, so we cannot overload it with SCSI specific entities,
124 * (like ASC/ASCQ) nor is there enough room to put all the information
125 * in that is desirable. This whole structure should be redone.
126 *
127 * In the interim, this will be considered device-specific. For SCSI,
128 * this will be taken to mean the last Sense Key seen. It is not
129 * guaranteed to always be sensibly associated with any command.
130 */
131
132/*
133 * The action of a MTIOCGET command clears mt_dsreg, mt_erreg, and mt_resid
134 */
135
136/* mag tape io control commands */
137#define MTIOCTOP _IOW('m', 1, struct mtop) /* do a mag tape op */
138#define MTIOCGET _IOR('m', 2, struct mtget) /* get tape status */
139#define MTIOCIEOT _IO('m', 3) /* ignore EOT error */
140#define MTIOCEEOT _IO('m', 4) /* enable EOT error */
141/*
142 * When more SCSI-3 SSC (streaming device) devices are out there
143 * that support the full 32 byte type 2 structure, we'll have to
144 * rethink these ioctls to support all the entities they haul into
145 * the picture (64 bit blocks, logical file record numbers, etc..).
146 */
147#define MTIOCRDSPOS _IOR('m', 5, uint32_t) /* get logical blk addr */
148#define MTIOCRDHPOS _IOR('m', 6, uint32_t) /* get hardware blk addr */
149#define MTIOCSLOCATE _IOW('m', 5, uint32_t) /* seek to logical blk addr */
150#define MTIOCHLOCATE _IOW('m', 6, uint32_t) /* seek to hardware blk addr */
151
152#ifdef _KERNEL
153/*
154 * minor device number
155 */
156
157#define T_UNIT 003 /* unit selection */
158#define T_NOREWIND 004 /* no rewind on close */
159#define T_DENSEL 030 /* density select */
160#define T_800BPI 000 /* select 800 bpi */
161#define T_1600BPI 010 /* select 1600 bpi */
162#define T_6250BPI 020 /* select 6250 bpi */
163#define T_BADBPI 030 /* undefined selection */
164#endif /* _KERNEL */
165
166#endif /* !_SYS_MTIO_H_ */
167