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 */
19 struct 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
67 /* structure for MTIOCGET - mag tape get status command */
68
69 struct mtget {
70 long mt_type; /* type of magtape device */
71 long mt_resid; /* residual count: (not sure)
72 * number of bytes ignored, or
73 * number of files not skipped, or
74 * number of records not skipped.
75 */
76 /* the following registers are device dependent */
77 long mt_dsreg; /* status register */
78 long mt_gstat; /* generic (device independent) status */
79 long mt_erreg; /* error register */
80 /* The next two fields are not always used */
81 __kernel_daddr_t mt_fileno; /* number of current file on tape */
82 __kernel_daddr_t mt_blkno; /* current block number */
83 };
84
85
86
87 /*
88 * Constants for mt_type. Not all of these are supported,
89 * and these are not all of the ones that are supported.
90 */
91 #define MT_ISUNKNOWN 0x01
92 #define MT_ISQIC02 0x02 /* Generic QIC-02 tape streamer */
93 #define MT_ISWT5150 0x03 /* Wangtek 5150EQ, QIC-150, QIC-02 */
94 #define MT_ISARCHIVE_5945L2 0x04 /* Archive 5945L-2, QIC-24, QIC-02? */
95 #define MT_ISCMSJ500 0x05 /* CMS Jumbo 500 (QIC-02?) */
96 #define MT_ISTDC3610 0x06 /* Tandberg 6310, QIC-24 */
97 #define MT_ISARCHIVE_VP60I 0x07 /* Archive VP60i, QIC-02 */
98 #define MT_ISARCHIVE_2150L 0x08 /* Archive Viper 2150L */
99 #define MT_ISARCHIVE_2060L 0x09 /* Archive Viper 2060L */
100 #define MT_ISARCHIVESC499 0x0A /* Archive SC-499 QIC-36 controller */
101 #define MT_ISQIC02_ALL_FEATURES 0x0F /* Generic QIC-02 with all features */
102 #define MT_ISWT5099EEN24 0x11 /* Wangtek 5099-een24, 60MB, QIC-24 */
103 #define MT_ISTEAC_MT2ST 0x12 /* Teac MT-2ST 155mb drive, Teac DC-1 card (Wangtek type) */
104 #define MT_ISEVEREX_FT40A 0x32 /* Everex FT40A (QIC-40) */
105 #define MT_ISDDS1 0x51 /* DDS device without partitions */
106 #define MT_ISDDS2 0x52 /* DDS device with partitions */
107 #define MT_ISONSTREAM_SC 0x61 /* OnStream SCSI tape drives (SC-x0)
108 and SCSI emulated (DI, DP, USB) */
109 #define MT_ISSCSI1 0x71 /* Generic ANSI SCSI-1 tape unit */
110 #define MT_ISSCSI2 0x72 /* Generic ANSI SCSI-2 tape unit */
111
112 /* QIC-40/80/3010/3020 ftape supported drives.
113 * 20bit vendor ID + 0x800000 (see ftape-vendors.h)
114 */
115 #define MT_ISFTAPE_UNKNOWN 0x800000 /* obsolete */
116 #define MT_ISFTAPE_FLAG 0x800000
117
118
119 /* structure for MTIOCPOS - mag tape get position command */
120
121 struct mtpos {
122 long mt_blkno; /* current block number */
123 };
124
125
126 /* mag tape io control commands */
127 #define MTIOCTOP _IOW('m', 1, struct mtop) /* do a mag tape op */
128 #define MTIOCGET _IOR('m', 2, struct mtget) /* get tape status */
129 #define MTIOCPOS _IOR('m', 3, struct mtpos) /* get tape position */
130
131
132 /* Generic Mag Tape (device independent) status macros for examining
133 * mt_gstat -- HP-UX compatible.
134 * There is room for more generic status bits here, but I don't
135 * know which of them are reserved. At least three or so should
136 * be added to make this really useful.
137 */
138 #define GMT_EOF(x) ((x) & 0x80000000)
139 #define GMT_BOT(x) ((x) & 0x40000000)
140 #define GMT_EOT(x) ((x) & 0x20000000)
141 #define GMT_SM(x) ((x) & 0x10000000) /* DDS setmark */
142 #define GMT_EOD(x) ((x) & 0x08000000) /* DDS EOD */
143 #define GMT_WR_PROT(x) ((x) & 0x04000000)
144 /* #define GMT_ ? ((x) & 0x02000000) */
145 #define GMT_ONLINE(x) ((x) & 0x01000000)
146 #define GMT_D_6250(x) ((x) & 0x00800000)
147 #define GMT_D_1600(x) ((x) & 0x00400000)
148 #define GMT_D_800(x) ((x) & 0x00200000)
149 /* #define GMT_ ? ((x) & 0x00100000) */
150 /* #define GMT_ ? ((x) & 0x00080000) */
151 #define GMT_DR_OPEN(x) ((x) & 0x00040000) /* door open (no tape) */
152 /* #define GMT_ ? ((x) & 0x00020000) */
153 #define GMT_IM_REP_EN(x) ((x) & 0x00010000) /* immediate report mode */
154 #define GMT_CLN(x) ((x) & 0x00008000) /* cleaning requested */
155 /* 15 generic status bits unused */
156
157
158 /* SCSI-tape specific definitions */
159 /* Bitfield shifts in the status */
160 #define MT_ST_BLKSIZE_SHIFT 0
161 #define MT_ST_BLKSIZE_MASK 0xffffff
162 #define MT_ST_DENSITY_SHIFT 24
163 #define MT_ST_DENSITY_MASK 0xff000000
164
165 #define MT_ST_SOFTERR_SHIFT 0
166 #define MT_ST_SOFTERR_MASK 0xffff
167
168 /* Bitfields for the MTSETDRVBUFFER ioctl */
169 #define MT_ST_OPTIONS 0xf0000000
170 #define MT_ST_BOOLEANS 0x10000000
171 #define MT_ST_SETBOOLEANS 0x30000000
172 #define MT_ST_CLEARBOOLEANS 0x40000000
173 #define MT_ST_WRITE_THRESHOLD 0x20000000
174 #define MT_ST_DEF_BLKSIZE 0x50000000
175 #define MT_ST_DEF_OPTIONS 0x60000000
176 #define MT_ST_TIMEOUTS 0x70000000
177 #define MT_ST_SET_TIMEOUT (MT_ST_TIMEOUTS | 0x000000)
178 #define MT_ST_SET_LONG_TIMEOUT (MT_ST_TIMEOUTS | 0x100000)
179 #define MT_ST_SET_CLN 0x80000000
180
181 #define MT_ST_BUFFER_WRITES 0x1
182 #define MT_ST_ASYNC_WRITES 0x2
183 #define MT_ST_READ_AHEAD 0x4
184 #define MT_ST_DEBUGGING 0x8
185 #define MT_ST_TWO_FM 0x10
186 #define MT_ST_FAST_MTEOM 0x20
187 #define MT_ST_AUTO_LOCK 0x40
188 #define MT_ST_DEF_WRITES 0x80
189 #define MT_ST_CAN_BSR 0x100
190 #define MT_ST_NO_BLKLIMS 0x200
191 #define MT_ST_CAN_PARTITIONS 0x400
192 #define MT_ST_SCSI2LOGICAL 0x800
193 #define MT_ST_SYSV 0x1000
194 #define MT_ST_NOWAIT 0x2000
195 #define MT_ST_SILI 0x4000
196
197 /* The mode parameters to be controlled. Parameter chosen with bits 20-28 */
198 #define MT_ST_CLEAR_DEFAULT 0xfffff
199 #define MT_ST_DEF_DENSITY (MT_ST_DEF_OPTIONS | 0x100000)
200 #define MT_ST_DEF_COMPRESSION (MT_ST_DEF_OPTIONS | 0x200000)
201 #define MT_ST_DEF_DRVBUFFER (MT_ST_DEF_OPTIONS | 0x300000)
202
203 /* The offset for the arguments for the special HP changer load command. */
204 #define MT_ST_HPLOADER_OFFSET 10000
205
206 #endif /* _LINUX_MTIO_H */
207
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