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-rw-r--r--include/linux/mtio.h208
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diff --git a/include/linux/mtio.h b/include/linux/mtio.h
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1/*
2 * linux/mtio.h header file for Linux. Written by H. Bergman
3 *
4 * Modified for special ioctls provided by zftape in September 1997
5 * by C.-J. Heine.
6 */
7
8#ifndef _LINUX_MTIO_H
9#define _LINUX_MTIO_H
10
11#include <linux/types.h>
12#include <linux/ioctl.h>
13
14/*
15 * Structures and definitions for mag tape io control commands
16 */
17
18/* structure for MTIOCTOP - mag tape op command */
19struct mtop {
20 short mt_op; /* operations defined below */
21 int mt_count; /* how many of them */
22};
23
24/* Magnetic Tape operations [Not all operations supported by all drivers]: */
25#define MTRESET 0 /* +reset drive in case of problems */
26#define MTFSF 1 /* forward space over FileMark,
27 * position at first record of next file
28 */
29#define MTBSF 2 /* backward space FileMark (position before FM) */
30#define MTFSR 3 /* forward space record */
31#define MTBSR 4 /* backward space record */
32#define MTWEOF 5 /* write an end-of-file record (mark) */
33#define MTREW 6 /* rewind */
34#define MTOFFL 7 /* rewind and put the drive offline (eject?) */
35#define MTNOP 8 /* no op, set status only (read with MTIOCGET) */
36#define MTRETEN 9 /* retension tape */
37#define MTBSFM 10 /* +backward space FileMark, position at FM */
38#define MTFSFM 11 /* +forward space FileMark, position at FM */
39#define MTEOM 12 /* goto end of recorded media (for appending files).
40 * MTEOM positions after the last FM, ready for
41 * appending another file.
42 */
43#define MTERASE 13 /* erase tape -- be careful! */
44
45#define MTRAS1 14 /* run self test 1 (nondestructive) */
46#define MTRAS2 15 /* run self test 2 (destructive) */
47#define MTRAS3 16 /* reserved for self test 3 */
48
49#define MTSETBLK 20 /* set block length (SCSI) */
50#define MTSETDENSITY 21 /* set tape density (SCSI) */
51#define MTSEEK 22 /* seek to block (Tandberg, etc.) */
52#define MTTELL 23 /* tell block (Tandberg, etc.) */
53#define MTSETDRVBUFFER 24 /* set the drive buffering according to SCSI-2 */
54 /* ordinary buffered operation with code 1 */
55#define MTFSS 25 /* space forward over setmarks */
56#define MTBSS 26 /* space backward over setmarks */
57#define MTWSM 27 /* write setmarks */
58
59#define MTLOCK 28 /* lock the drive door */
60#define MTUNLOCK 29 /* unlock the drive door */
61#define MTLOAD 30 /* execute the SCSI load command */
62#define MTUNLOAD 31 /* execute the SCSI unload command */
63#define MTCOMPRESSION 32/* control compression with SCSI mode page 15 */
64#define MTSETPART 33 /* Change the active tape partition */
65#define MTMKPART 34 /* Format the tape with one or two partitions */
66#define MTWEOFI 35 /* write an end-of-file record (mark) in immediate mode */
67
68/* structure for MTIOCGET - mag tape get status command */
69
70struct mtget {
71 long mt_type; /* type of magtape device */
72 long mt_resid; /* residual count: (not sure)
73 * number of bytes ignored, or
74 * number of files not skipped, or
75 * number of records not skipped.
76 */
77 /* the following registers are device dependent */
78 long mt_dsreg; /* status register */
79 long mt_gstat; /* generic (device independent) status */
80 long mt_erreg; /* error register */
81 /* The next two fields are not always used */
82 __kernel_daddr_t mt_fileno; /* number of current file on tape */
83 __kernel_daddr_t mt_blkno; /* current block number */
84};
85
86
87
88/*
89 * Constants for mt_type. Not all of these are supported,
90 * and these are not all of the ones that are supported.
91 */
92#define MT_ISUNKNOWN 0x01
93#define MT_ISQIC02 0x02 /* Generic QIC-02 tape streamer */
94#define MT_ISWT5150 0x03 /* Wangtek 5150EQ, QIC-150, QIC-02 */
95#define MT_ISARCHIVE_5945L2 0x04 /* Archive 5945L-2, QIC-24, QIC-02? */
96#define MT_ISCMSJ500 0x05 /* CMS Jumbo 500 (QIC-02?) */
97#define MT_ISTDC3610 0x06 /* Tandberg 6310, QIC-24 */
98#define MT_ISARCHIVE_VP60I 0x07 /* Archive VP60i, QIC-02 */
99#define MT_ISARCHIVE_2150L 0x08 /* Archive Viper 2150L */
100#define MT_ISARCHIVE_2060L 0x09 /* Archive Viper 2060L */
101#define MT_ISARCHIVESC499 0x0A /* Archive SC-499 QIC-36 controller */
102#define MT_ISQIC02_ALL_FEATURES 0x0F /* Generic QIC-02 with all features */
103#define MT_ISWT5099EEN24 0x11 /* Wangtek 5099-een24, 60MB, QIC-24 */
104#define MT_ISTEAC_MT2ST 0x12 /* Teac MT-2ST 155mb drive, Teac DC-1 card (Wangtek type) */
105#define MT_ISEVEREX_FT40A 0x32 /* Everex FT40A (QIC-40) */
106#define MT_ISDDS1 0x51 /* DDS device without partitions */
107#define MT_ISDDS2 0x52 /* DDS device with partitions */
108#define MT_ISONSTREAM_SC 0x61 /* OnStream SCSI tape drives (SC-x0)
109 and SCSI emulated (DI, DP, USB) */
110#define MT_ISSCSI1 0x71 /* Generic ANSI SCSI-1 tape unit */
111#define MT_ISSCSI2 0x72 /* Generic ANSI SCSI-2 tape unit */
112
113/* QIC-40/80/3010/3020 ftape supported drives.
114 * 20bit vendor ID + 0x800000 (see ftape-vendors.h)
115 */
116#define MT_ISFTAPE_UNKNOWN 0x800000 /* obsolete */
117#define MT_ISFTAPE_FLAG 0x800000
118
119
120/* structure for MTIOCPOS - mag tape get position command */
121
122struct mtpos {
123 long mt_blkno; /* current block number */
124};
125
126
127/* mag tape io control commands */
128#define MTIOCTOP _IOW('m', 1, struct mtop) /* do a mag tape op */
129#define MTIOCGET _IOR('m', 2, struct mtget) /* get tape status */
130#define MTIOCPOS _IOR('m', 3, struct mtpos) /* get tape position */
131
132
133/* Generic Mag Tape (device independent) status macros for examining
134 * mt_gstat -- HP-UX compatible.
135 * There is room for more generic status bits here, but I don't
136 * know which of them are reserved. At least three or so should
137 * be added to make this really useful.
138 */
139#define GMT_EOF(x) ((x) & 0x80000000)
140#define GMT_BOT(x) ((x) & 0x40000000)
141#define GMT_EOT(x) ((x) & 0x20000000)
142#define GMT_SM(x) ((x) & 0x10000000) /* DDS setmark */
143#define GMT_EOD(x) ((x) & 0x08000000) /* DDS EOD */
144#define GMT_WR_PROT(x) ((x) & 0x04000000)
145/* #define GMT_ ? ((x) & 0x02000000) */
146#define GMT_ONLINE(x) ((x) & 0x01000000)
147#define GMT_D_6250(x) ((x) & 0x00800000)
148#define GMT_D_1600(x) ((x) & 0x00400000)
149#define GMT_D_800(x) ((x) & 0x00200000)
150/* #define GMT_ ? ((x) & 0x00100000) */
151/* #define GMT_ ? ((x) & 0x00080000) */
152#define GMT_DR_OPEN(x) ((x) & 0x00040000) /* door open (no tape) */
153/* #define GMT_ ? ((x) & 0x00020000) */
154#define GMT_IM_REP_EN(x) ((x) & 0x00010000) /* immediate report mode */
155#define GMT_CLN(x) ((x) & 0x00008000) /* cleaning requested */
156/* 15 generic status bits unused */
157
158
159/* SCSI-tape specific definitions */
160/* Bitfield shifts in the status */
161#define MT_ST_BLKSIZE_SHIFT 0
162#define MT_ST_BLKSIZE_MASK 0xffffff
163#define MT_ST_DENSITY_SHIFT 24
164#define MT_ST_DENSITY_MASK 0xff000000
165
166#define MT_ST_SOFTERR_SHIFT 0
167#define MT_ST_SOFTERR_MASK 0xffff
168
169/* Bitfields for the MTSETDRVBUFFER ioctl */
170#define MT_ST_OPTIONS 0xf0000000
171#define MT_ST_BOOLEANS 0x10000000
172#define MT_ST_SETBOOLEANS 0x30000000
173#define MT_ST_CLEARBOOLEANS 0x40000000
174#define MT_ST_WRITE_THRESHOLD 0x20000000
175#define MT_ST_DEF_BLKSIZE 0x50000000
176#define MT_ST_DEF_OPTIONS 0x60000000
177#define MT_ST_TIMEOUTS 0x70000000
178#define MT_ST_SET_TIMEOUT (MT_ST_TIMEOUTS | 0x000000)
179#define MT_ST_SET_LONG_TIMEOUT (MT_ST_TIMEOUTS | 0x100000)
180#define MT_ST_SET_CLN 0x80000000
181
182#define MT_ST_BUFFER_WRITES 0x1
183#define MT_ST_ASYNC_WRITES 0x2
184#define MT_ST_READ_AHEAD 0x4
185#define MT_ST_DEBUGGING 0x8
186#define MT_ST_TWO_FM 0x10
187#define MT_ST_FAST_MTEOM 0x20
188#define MT_ST_AUTO_LOCK 0x40
189#define MT_ST_DEF_WRITES 0x80
190#define MT_ST_CAN_BSR 0x100
191#define MT_ST_NO_BLKLIMS 0x200
192#define MT_ST_CAN_PARTITIONS 0x400
193#define MT_ST_SCSI2LOGICAL 0x800
194#define MT_ST_SYSV 0x1000
195#define MT_ST_NOWAIT 0x2000
196#define MT_ST_SILI 0x4000
197#define MT_ST_NOWAIT_EOF 0x8000
198
199/* The mode parameters to be controlled. Parameter chosen with bits 20-28 */
200#define MT_ST_CLEAR_DEFAULT 0xfffff
201#define MT_ST_DEF_DENSITY (MT_ST_DEF_OPTIONS | 0x100000)
202#define MT_ST_DEF_COMPRESSION (MT_ST_DEF_OPTIONS | 0x200000)
203#define MT_ST_DEF_DRVBUFFER (MT_ST_DEF_OPTIONS | 0x300000)
204
205/* The offset for the arguments for the special HP changer load command. */
206#define MT_ST_HPLOADER_OFFSET 10000
207
208#endif /* _LINUX_MTIO_H */
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