aboutsummaryrefslogtreecommitdiffstats
path: root/include/linux/mtio.h
blob: 8c66151821e39429d2404910a93f8f14732648e4 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
/* 
 * linux/mtio.h header file for Linux. Written by H. Bergman
 *
 * Modified for special ioctls provided by zftape in September 1997
 * by C.-J. Heine.
 */

#ifndef _LINUX_MTIO_H
#define _LINUX_MTIO_H

#include <linux/types.h>
#include <linux/ioctl.h>
#include <linux/qic117.h>

/*
 * Structures and definitions for mag tape io control commands
 */

/* structure for MTIOCTOP - mag tape op command */
struct	mtop {
	short	mt_op;		/* operations defined below */
	int	mt_count;	/* how many of them */
};

/* Magnetic Tape operations [Not all operations supported by all drivers]: */
#define MTRESET 0	/* +reset drive in case of problems */
#define MTFSF	1	/* forward space over FileMark,
			 * position at first record of next file 
			 */
#define MTBSF	2	/* backward space FileMark (position before FM) */
#define MTFSR	3	/* forward space record */
#define MTBSR	4	/* backward space record */
#define MTWEOF	5	/* write an end-of-file record (mark) */
#define MTREW	6	/* rewind */
#define MTOFFL	7	/* rewind and put the drive offline (eject?) */
#define MTNOP	8	/* no op, set status only (read with MTIOCGET) */
#define MTRETEN 9	/* retension tape */
#define MTBSFM	10	/* +backward space FileMark, position at FM */
#define MTFSFM  11	/* +forward space FileMark, position at FM */
#define MTEOM	12	/* goto end of recorded media (for appending files).
			 * MTEOM positions after the last FM, ready for
			 * appending another file.
			 */
#define MTERASE 13	/* erase tape -- be careful! */

#define MTRAS1  14	/* run self test 1 (nondestructive) */
#define MTRAS2	15	/* run self test 2 (destructive) */
#define MTRAS3  16	/* reserved for self test 3 */

#define MTSETBLK 20	/* set block length (SCSI) */
#define MTSETDENSITY 21	/* set tape density (SCSI) */
#define MTSEEK	22	/* seek to block (Tandberg, etc.) */
#define MTTELL	23	/* tell block (Tandberg, etc.) */
#define MTSETDRVBUFFER 24 /* set the drive buffering according to SCSI-2 */
			/* ordinary buffered operation with code 1 */
#define MTFSS	25	/* space forward over setmarks */
#define MTBSS	26	/* space backward over setmarks */
#define MTWSM	27	/* write setmarks */

#define MTLOCK  28	/* lock the drive door */
#define MTUNLOCK 29	/* unlock the drive door */
#define MTLOAD  30	/* execute the SCSI load command */
#define MTUNLOAD 31	/* execute the SCSI unload command */
#define MTCOMPRESSION 32/* control compression with SCSI mode page 15 */
#define MTSETPART 33	/* Change the active tape partition */
#define MTMKPART  34	/* Format the tape with one or two partitions */

/* structure for MTIOCGET - mag tape get status command */

struct	mtget {
	long	mt_type;	/* type of magtape device */
	long	mt_resid;	/* residual count: (not sure)
				 *	number of bytes ignored, or
				 *	number of files not skipped, or
				 *	number of records not skipped.
				 */
	/* the following registers are device dependent */
	long	mt_dsreg;	/* status register */
	long	mt_gstat;	/* generic (device independent) status */
	long	mt_erreg;	/* error register */
	/* The next two fields are not always used */
	__kernel_daddr_t mt_fileno;	/* number of current file on tape */
	__kernel_daddr_t mt_blkno;	/* current block number */
};



/*
 * Constants for mt_type. Not all of these are supported,
 * and these are not all of the ones that are supported.
 */
#define MT_ISUNKNOWN		0x01
#define MT_ISQIC02		0x02	/* Generic QIC-02 tape streamer */
#define MT_ISWT5150		0x03	/* Wangtek 5150EQ, QIC-150, QIC-02 */
#define MT_ISARCHIVE_5945L2	0x04	/* Archive 5945L-2, QIC-24, QIC-02? */
#define MT_ISCMSJ500		0x05	/* CMS Jumbo 500 (QIC-02?) */
#define MT_ISTDC3610		0x06	/* Tandberg 6310, QIC-24 */
#define MT_ISARCHIVE_VP60I	0x07	/* Archive VP60i, QIC-02 */
#define MT_ISARCHIVE_2150L	0x08	/* Archive Viper 2150L */
#define MT_ISARCHIVE_2060L	0x09	/* Archive Viper 2060L */
#define MT_ISARCHIVESC499	0x0A	/* Archive SC-499 QIC-36 controller */
#define MT_ISQIC02_ALL_FEATURES	0x0F	/* Generic QIC-02 with all features */
#define MT_ISWT5099EEN24	0x11	/* Wangtek 5099-een24, 60MB, QIC-24 */
#define MT_ISTEAC_MT2ST		0x12	/* Teac MT-2ST 155mb drive, Teac DC-1 card (Wangtek type) */
#define MT_ISEVEREX_FT40A	0x32	/* Everex FT40A (QIC-40) */
#define MT_ISDDS1		0x51	/* DDS device without partitions */
#define MT_ISDDS2		0x52	/* DDS device with partitions */
#define MT_ISONSTREAM_SC        0x61   /* OnStream SCSI tape drives (SC-x0)
					  and SCSI emulated (DI, DP, USB) */
#define MT_ISSCSI1		0x71	/* Generic ANSI SCSI-1 tape unit */
#define MT_ISSCSI2		0x72	/* Generic ANSI SCSI-2 tape unit */

/* QIC-40/80/3010/3020 ftape supported drives.
 * 20bit vendor ID + 0x800000 (see ftape-vendors.h)
 */
#define MT_ISFTAPE_UNKNOWN	0x800000 /* obsolete */
#define MT_ISFTAPE_FLAG	0x800000

struct mt_tape_info {
	long t_type;		/* device type id (mt_type) */
	char *t_name;		/* descriptive name */
};

#define MT_TAPE_INFO	{ \
	{MT_ISUNKNOWN,		"Unknown type of tape device"}, \
	{MT_ISQIC02,		"Generic QIC-02 tape streamer"}, \
	{MT_ISWT5150,		"Wangtek 5150, QIC-150"}, \
	{MT_ISARCHIVE_5945L2,	"Archive 5945L-2"}, \
	{MT_ISCMSJ500,		"CMS Jumbo 500"}, \
	{MT_ISTDC3610,		"Tandberg TDC 3610, QIC-24"}, \
	{MT_ISARCHIVE_VP60I,	"Archive VP60i, QIC-02"}, \
	{MT_ISARCHIVE_2150L,	"Archive Viper 2150L"}, \
	{MT_ISARCHIVE_2060L,	"Archive Viper 2060L"}, \
	{MT_ISARCHIVESC499,	"Archive SC-499 QIC-36 controller"}, \
	{MT_ISQIC02_ALL_FEATURES, "Generic QIC-02 tape, all features"}, \
	{MT_ISWT5099EEN24,	"Wangtek 5099-een24, 60MB"}, \
	{MT_ISTEAC_MT2ST,	"Teac MT-2ST 155mb data cassette drive"}, \
	{MT_ISEVEREX_FT40A,	"Everex FT40A, QIC-40"}, \
	{MT_ISONSTREAM_SC,      "OnStream SC-, DI-, DP-, or USB tape drive"}, \
	{MT_ISSCSI1,		"Generic SCSI-1 tape"}, \
	{MT_ISSCSI2,		"Generic SCSI-2 tape"}, \
	{0, NULL} \
}


/* structure for MTIOCPOS - mag tape get position command */

struct	mtpos {
	long 	mt_blkno;	/* current block number */
};


/*  structure for MTIOCVOLINFO, query information about the volume
 *  currently positioned at (zftape)
 */
struct mtvolinfo {
	unsigned int mt_volno;   /* vol-number */
	unsigned int mt_blksz;   /* blocksize used when recording */
	unsigned int mt_rawsize; /* raw tape space consumed, in kb */
	unsigned int mt_size;    /* volume size after decompression, in kb */
	unsigned int mt_cmpr:1;  /* this volume has been compressed */
};

/* raw access to a floppy drive, read and write an arbitrary segment.
 * For ftape/zftape to support formatting etc.
 */
#define MT_FT_RD_SINGLE  0
#define MT_FT_RD_AHEAD   1
#define MT_FT_WR_ASYNC   0 /* start tape only when all buffers are full     */
#define MT_FT_WR_MULTI   1 /* start tape, continue until buffers are empty  */
#define MT_FT_WR_SINGLE  2 /* write a single segment and stop afterwards    */
#define MT_FT_WR_DELETE  3 /* write deleted data marks, one segment at time */

struct mtftseg
{            
	unsigned mt_segno;   /* the segment to read or write */
	unsigned mt_mode;    /* modes for read/write (sync/async etc.) */
	int      mt_result;  /* result of r/w request, not of the ioctl */
	void    __user *mt_data;    /* User space buffer: must be 29kb */
};

/* get tape capacity (ftape/zftape)
 */
struct mttapesize {
	unsigned long mt_capacity; /* entire, uncompressed capacity 
				    * of a cartridge
				    */
	unsigned long mt_used;     /* what has been used so far, raw 
				    * uncompressed amount
				    */
};

/*  possible values of the ftfmt_op field
 */
#define FTFMT_SET_PARMS		1 /* set software parms */
#define FTFMT_GET_PARMS		2 /* get software parms */
#define FTFMT_FORMAT_TRACK	3 /* start formatting a tape track   */
#define FTFMT_STATUS		4 /* monitor formatting a tape track */
#define FTFMT_VERIFY		5 /* verify the given segment        */

struct ftfmtparms {
	unsigned char  ft_qicstd;   /* QIC-40/QIC-80/QIC-3010/QIC-3020 */
	unsigned char  ft_fmtcode;  /* Refer to the QIC specs */
	unsigned char  ft_fhm;      /* floppy head max */
	unsigned char  ft_ftm;      /* floppy track max */
	unsigned short ft_spt;      /* segments per track */
	unsigned short ft_tpc;      /* tracks per cartridge */
};

struct ftfmttrack {
	unsigned int  ft_track;   /* track to format */
	unsigned char ft_gap3;    /* size of gap3, for FORMAT_TRK */
};

struct ftfmtstatus {
	unsigned int  ft_segment;  /* segment currently being formatted */
};

struct ftfmtverify {
	unsigned int  ft_segment;   /* segment to verify */
	unsigned long ft_bsm;       /* bsm as result of VERIFY cmd */
};

struct mtftformat {
	unsigned int fmt_op;      /* operation to perform */
	union fmt_arg {
		struct ftfmtparms  fmt_parms;  /* format parameters */
		struct ftfmttrack  fmt_track;  /* ctrl while formatting */
		struct ftfmtstatus fmt_status;
		struct ftfmtverify fmt_verify; /* for verifying */ 
	} fmt_arg;
};

struct mtftcmd {
	unsigned int ft_wait_before; /* timeout to wait for drive to get ready 
				      * before command is sent. Milliseconds
				      */
	qic117_cmd_t ft_cmd;         /* command to send */
	unsigned char ft_parm_cnt;   /* zero: no parm is sent. */
	unsigned char ft_parms[3];   /* parameter(s) to send to
				      * the drive. The parms are nibbles
				      * driver sends cmd + 2 step pulses */
	unsigned int ft_result_bits; /* if non zero, number of bits
				      *	returned by the tape drive
				      */
	unsigned int ft_result;      /* the result returned by the tape drive*/
	unsigned int ft_wait_after;  /* timeout to wait for drive to get ready
				      * after command is sent. 0: don't wait */
	int ft_status;	             /* status returned by ready wait
				      * undefined if timeout was 0.
				      */
	int ft_error;                /* error code if error status was set by 
				      * command
				      */
};

/* 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	MTIOCPOS	_IOR('m', 3, struct mtpos)	/* get tape position */

/* The next two are used by the QIC-02 driver for runtime reconfiguration.
 * See tpqic02.h for struct mtconfiginfo.
 */
#define	MTIOCGETCONFIG	_IOR('m', 4, struct mtconfiginfo) /* get tape config */
#define	MTIOCSETCONFIG	_IOW('m', 5, struct mtconfiginfo) /* set tape config */

/* the next six are used by the floppy ftape drivers and its frontends
 * sorry, but MTIOCTOP commands are write only.
 */
#define	MTIOCRDFTSEG    _IOWR('m', 6, struct mtftseg)  /* read a segment */
#define	MTIOCWRFTSEG    _IOWR('m', 7, struct mtftseg)   /* write a segment */
#define MTIOCVOLINFO	_IOR('m',  8, struct mtvolinfo) /* info about volume */
#define MTIOCGETSIZE    _IOR('m',  9, struct mttapesize)/* get cartridge size*/
#define MTIOCFTFORMAT   _IOWR('m', 10, struct mtftformat) /* format ftape */
#define MTIOCFTCMD	_IOWR('m', 11, struct mtftcmd) /* send QIC-117 cmd */

/* Generic Mag Tape (device independent) status macros for examining
 * mt_gstat -- HP-UX compatible.
 * There is room for more generic status bits here, but I don't
 * know which of them are reserved. At least three or so should
 * be added to make this really useful.
 */
#define GMT_EOF(x)              ((x) & 0x80000000)
#define GMT_BOT(x)              ((x) & 0x40000000)
#define GMT_EOT(x)              ((x) & 0x20000000)
#define GMT_SM(x)               ((x) & 0x10000000)  /* DDS setmark */
#define GMT_EOD(x)              ((x) & 0x08000000)  /* DDS EOD */
#define GMT_WR_PROT(x)          ((x) & 0x04000000)
/* #define GMT_ ? 		((x) & 0x02000000) */
#define GMT_ONLINE(x)           ((x) & 0x01000000)
#define GMT_D_6250(x)           ((x) & 0x00800000)
#define GMT_D_1600(x)           ((x) & 0x00400000)
#define GMT_D_800(x)            ((x) & 0x00200000)
/* #define GMT_ ? 		((x) & 0x00100000) */
/* #define GMT_ ? 		((x) & 0x00080000) */
#define GMT_DR_OPEN(x)          ((x) & 0x00040000)  /* door open (no tape) */
/* #define GMT_ ? 		((x) & 0x00020000) */
#define GMT_IM_REP_EN(x)        ((x) & 0x00010000)  /* immediate report mode */
#define GMT_CLN(x)              ((x) & 0x00008000)  /* cleaning requested */
/* 15 generic status bits unused */


/* SCSI-tape specific definitions */
/* Bitfield shifts in the status  */
#define MT_ST_BLKSIZE_SHIFT	0
#define MT_ST_BLKSIZE_MASK	0xffffff
#define MT_ST_DENSITY_SHIFT	24
#define MT_ST_DENSITY_MASK	0xff000000

#define MT_ST_SOFTERR_SHIFT	0
#define MT_ST_SOFTERR_MASK	0xffff

/* Bitfields for the MTSETDRVBUFFER ioctl */
#define MT_ST_OPTIONS		0xf0000000
#define MT_ST_BOOLEANS		0x10000000
#define MT_ST_SETBOOLEANS	0x30000000
#define MT_ST_CLEARBOOLEANS	0x40000000
#define MT_ST_WRITE_THRESHOLD	0x20000000
#define MT_ST_DEF_BLKSIZE	0x50000000
#define MT_ST_DEF_OPTIONS	0x60000000
#define MT_ST_TIMEOUTS		0x70000000
#define MT_ST_SET_TIMEOUT	(MT_ST_TIMEOUTS | 0x000000)
#define MT_ST_SET_LONG_TIMEOUT	(MT_ST_TIMEOUTS | 0x100000)
#define MT_ST_SET_CLN		0x80000000

#define MT_ST_BUFFER_WRITES	0x1
#define MT_ST_ASYNC_WRITES	0x2
#define MT_ST_READ_AHEAD	0x4
#define MT_ST_DEBUGGING		0x8
#define MT_ST_TWO_FM		0x10
#define MT_ST_FAST_MTEOM	0x20
#define MT_ST_AUTO_LOCK		0x40
#define MT_ST_DEF_WRITES	0x80
#define MT_ST_CAN_BSR		0x100
#define MT_ST_NO_BLKLIMS	0x200
#define MT_ST_CAN_PARTITIONS    0x400
#define MT_ST_SCSI2LOGICAL      0x800
#define MT_ST_SYSV              0x1000
#define MT_ST_NOWAIT            0x2000

/* The mode parameters to be controlled. Parameter chosen with bits 20-28 */
#define MT_ST_CLEAR_DEFAULT	0xfffff
#define MT_ST_DEF_DENSITY	(MT_ST_DEF_OPTIONS | 0x100000)
#define MT_ST_DEF_COMPRESSION	(MT_ST_DEF_OPTIONS | 0x200000)
#define MT_ST_DEF_DRVBUFFER	(MT_ST_DEF_OPTIONS | 0x300000)

/* The offset for the arguments for the special HP changer load command. */
#define MT_ST_HPLOADER_OFFSET 10000

#endif /* _LINUX_MTIO_H */