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1 /* $Id: /usr/src/linux-1.1.64/include/linux/mtio.h at Tue Jan 10 21:02:51 1995 by root@kai.home$
2 *
3 * linux/mtio.h header file for Linux. Written by H. Bergman
4 */
5
6 #ifndef _LINUX_MTIO_H
7 #define _LINUX_MTIO_H
8
9 #include <linux/ioctl.h>
10
11 /*
12 * Structures and definitions for mag tape io control commands
13 */
14
15 /* structure for MTIOCTOP - mag tape op command */
16 struct mtop {
17 short mt_op; /* operations defined below */
18 int mt_count; /* how many of them */
19 };
20
21 /* Magnetic Tape operations [Not all operations supported by all drivers]: */
22 #define MTRESET 0 /* +reset drive in case of problems */
23 #define MTFSF 1 /* forward space over FileMark,
24 * position at first record of next file
25 */
26 #define MTBSF 2 /* backward space FileMark (position before FM) */
27 #define MTFSR 3 /* forward space record */
28 #define MTBSR 4 /* backward space record */
29 #define MTWEOF 5 /* write an end-of-file record (mark) */
30 #define MTREW 6 /* rewind */
31 #define MTOFFL 7 /* rewind and put the drive offline (eject?) */
32 #define MTNOP 8 /* no op, set status only (read with MTIOCGET) */
33 #define MTRETEN 9 /* retension tape */
34 #define MTBSFM 10 /* +backward space FileMark, position at FM */
35 #define MTFSFM 11 /* +forward space FileMark, position at FM */
36 #define MTEOM 12 /* goto end of recorded media (for appending files).
37 * MTEOM positions after the last FM, ready for
38 * appending another file.
39 */
40 #define MTERASE 13 /* erase tape -- be careful! */
41
42 #define MTRAS1 14 /* run self test 1 (nondestructive) */
43 #define MTRAS2 15 /* run self test 2 (destructive) */
44 #define MTRAS3 16 /* reserved for self test 3 */
45
46
47 #define MTSETBLK 20 /* set block length (SCSI) */
48 #define MTSETDENSITY 21 /* set tape density (SCSI) */
49 #define MTSEEK 22 /* seek to block (Tandberg, etc.) */
50 #define MTTELL 23 /* tell block (Tandberg, etc.) */
51 #define MTSETDRVBUFFER 24 /* set the drive buffering according to SCSI-2 */
52 /* ordinary buffered operation with code 1 */
53 #define MTFSS 25 /* space forward over setmarks */
54 #define MTBSS 26 /* space backward over setmarks */
55 #define MTWSM 27 /* write setmarks */
56
57 /* structure for MTIOCGET - mag tape get status command */
58
59 struct mtget {
60 long mt_type; /* type of magtape device */
61 long mt_resid; /* residual count: (not sure)
62 * number of bytes ignored, or
63 * number of files not skipped, or
64 * number of records not skipped.
65 */
66 /* the following registers are device dependent */
67 long mt_dsreg; /* status register */
68 long mt_gstat; /* generic (device independent) status */
69 long mt_erreg; /* error register */
70 /* The next two fields are not always used */
71 daddr_t mt_fileno; /* number of current file on tape */
72 daddr_t mt_blkno; /* current block number */
73 };
74
75
76
77 /*
78 * Constants for mt_type. Not all of these are supported,
79 * and these are not all of the ones that are supported.
80 */
81 #define MT_ISUNKNOWN 0x01
82 #define MT_ISQIC02 0x02 /* Generic QIC-02 tape streamer */
83 #define MT_ISWT5150 0x03 /* Wangtek 5150EQ, QIC-150, QIC-02 */
84 #define MT_ISARCHIVE_5945L2 0x04 /* Archive 5945L-2, QIC-24, QIC-02? */
85 #define MT_ISCMSJ500 0x05 /* CMS Jumbo 500 (QIC-02?) */
86 #define MT_ISTDC3610 0x06 /* Tandberg 6310, QIC-24 */
87 #define MT_ISARCHIVE_VP60I 0x07 /* Archive VP60i, QIC-02 */
88 #define MT_ISARCHIVE_2150L 0x08 /* Archive Viper 2150L */
89 #define MT_ISARCHIVE_2060L 0x09 /* Archive Viper 2060L */
90 #define MT_ISARCHIVESC499 0x0A /* Archive SC-499 QIC-36 controller */
91 #define MT_ISQIC02_ALL_FEATURES 0x0F /* Generic QIC-02 with all features */
92 #define MT_ISWT5099EEN24 0x11 /* Wangtek 5099-een24, 60MB, QIC-24 */
93 #define MT_ISTEAC_MT2ST 0x12 /* Teac MT-2ST 155mb drive, Teac DC-1 card (Wangtek type) */
94 #define MT_ISEVEREX_FT40A 0x32 /* Everex FT40A (QIC-40) */
95 #define MT_ISDDS1 0x51 /* DDS device without partitions */
96 #define MT_ISDDS2 0x52 /* DDS device with partitions */
97 #define MT_ISSCSI1 0x71 /* Generic ANSI SCSI-1 tape unit */
98 #define MT_ISSCSI2 0x72 /* Generic ANSI SCSI-2 tape unit */
99
100 /* QIC-40/80/3010/3020 ftape supported drives.
101 * 20bit vendor ID + 0x800000 (see vendors.h in ftape distribution)
102 */
103 #define MT_ISFTAPE_UNKNOWN 0x800000 /* obsolete */
104 #define MT_ISFTAPE_FLAG 0x800000
105
106 struct mt_tape_info {
107 long t_type; /* device type id (mt_type) */
108 char *t_name; /* descriptive name */
109 };
110
111 #define MT_TAPE_INFO { \
112 {MT_ISUNKNOWN, "Unknown type of tape device"}, \
113 {MT_ISQIC02, "Generic QIC-02 tape streamer"}, \
114 {MT_ISWT5150, "Wangtek 5150, QIC-150"}, \
115 {MT_ISARCHIVE_5945L2, "Archive 5945L-2"}, \
116 {MT_ISCMSJ500, "CMS Jumbo 500"}, \
117 {MT_ISTDC3610, "Tandberg TDC 3610, QIC-24"}, \
118 {MT_ISARCHIVE_VP60I, "Archive VP60i, QIC-02"}, \
119 {MT_ISARCHIVE_2150L, "Archive Viper 2150L"}, \
120 {MT_ISARCHIVE_2060L, "Archive Viper 2060L"}, \
121 {MT_ISARCHIVESC499, "Archive SC-499 QIC-36 controller"}, \
122 {MT_ISQIC02_ALL_FEATURES, "Generic QIC-02 tape, all features"}, \
123 {MT_ISWT5099EEN24, "Wangtek 5099-een24, 60MB"}, \
124 {MT_ISTEAC_MT2ST, "Teac MT-2ST 155mb data cassette drive"}, \
125 {MT_ISEVEREX_FT40A, "Everex FT40A, QIC-40"}, \
126 {MT_ISSCSI1, "Generic SCSI-1 tape"}, \
127 {MT_ISSCSI2, "Generic SCSI-2 tape"}, \
128 {0, NULL} \
129 }
130
131
132 /* structure for MTIOCPOS - mag tape get position command */
133
134 struct mtpos {
135 long mt_blkno; /* current block number */
136 };
137
138
139 /* mag tape io control commands */
140 #define MTIOCTOP _IOW('m', 1, struct mtop) /* do a mag tape op */
141 #define MTIOCGET _IOR('m', 2, struct mtget) /* get tape status */
142 #define MTIOCPOS _IOR('m', 3, struct mtpos) /* get tape position */
143
144 /* The next two are used by the QIC-02 driver for runtime reconfiguration.
145 * See tpqic02.h for struct mtconfiginfo.
146 */
147 #define MTIOCGETCONFIG _IOR('m', 4, struct mtconfiginfo) /* get tape config */
148 #define MTIOCSETCONFIG _IOW('m', 5, struct mtconfiginfo) /* set tape config */
149
150
151 /* Generic Mag Tape (device independent) status macros for examining
152 * mt_gstat -- HP-UX compatible.
153 * There is room for more generic status bits here, but I don't
154 * know which of them are reserved. At least three or so should
155 * be added to make this really useful.
156 */
157 #define GMT_EOF(x) ((x) & 0x80000000)
158 #define GMT_BOT(x) ((x) & 0x40000000)
159 #define GMT_EOT(x) ((x) & 0x20000000)
160 #define GMT_SM(x) ((x) & 0x10000000) /* DDS setmark */
161 #define GMT_EOD(x) ((x) & 0x08000000) /* DDS EOD */
162 #define GMT_WR_PROT(x) ((x) & 0x04000000)
163 /* #define GMT_ ? ((x) & 0x02000000) */
164 #define GMT_ONLINE(x) ((x) & 0x01000000)
165 #define GMT_D_6250(x) ((x) & 0x00800000)
166 #define GMT_D_1600(x) ((x) & 0x00400000)
167 #define GMT_D_800(x) ((x) & 0x00200000)
168 /* #define GMT_ ? ((x) & 0x00100000) */
169 /* #define GMT_ ? ((x) & 0x00080000) */
170 #define GMT_DR_OPEN(x) ((x) & 0x00040000) /* door open (no tape) */
171 /* #define GMT_ ? ((x) & 0x00020000) */
172 #define GMT_IM_REP_EN(x) ((x) & 0x00010000) /* immediate report mode */
173 /* 16 generic status bits unused */
174
175 /* DDS drives have 'setmarks', sort of like filemarks but used to group
176 * files, rather than blocks. Not used. Not supported.
177 * I think DDS drives are DAT drives.
178 */
179
180 /* SCSI-tape specific definitions */
181 #define MT_ST_BLKSIZE_SHIFT 0
182 #define MT_ST_BLKSIZE_MASK 0xffffff
183 #define MT_ST_DENSITY_SHIFT 24
184 #define MT_ST_DENSITY_MASK 0xff000000
185
186 #define MT_ST_SOFTERR_SHIFT 0
187 #define MT_ST_SOFTERR_MASK 0xffff
188
189 #define MT_ST_OPTIONS 0xf0000000
190 #define MT_ST_BOOLEANS 0x10000000
191 #define MT_ST_WRITE_THRESHOLD 0x20000000
192 #define MT_ST_BUFFER_WRITES 0x1
193 #define MT_ST_ASYNC_WRITES 0x2
194 #define MT_ST_READ_AHEAD 0x4
195 #define MT_ST_DEBUGGING 0x8
196 #define MT_ST_TWO_FM 0x10
197 #define MT_ST_FAST_MTEOM 0x20
198
199 #endif /* _LINUX_MTIO_H */
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