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29 * @(#)mtio.h 8.1 (Berkeley) 6/2/93
37 #include <sys/types.h>
39 #include <sys/ioccom.h>
42 * Structures and definitions for mag tape io control commands
45 /* structure for MTIOCTOP - mag tape op command */
47 short mt_op; /* operations defined below */
48 int32_t mt_count; /* how many of them */
52 #define MTWEOF 0 /* write an end-of-file record */
53 #define MTFSF 1 /* forward space file */
54 #define MTBSF 2 /* backward space file */
55 #define MTFSR 3 /* forward space record */
56 #define MTBSR 4 /* backward space record */
57 #define MTREW 5 /* rewind */
58 #define MTOFFL 6 /* rewind and put the drive offline */
59 #define MTNOP 7 /* no operation, sets status only */
60 #define MTCACHE 8 /* enable controller cache */
61 #define MTNOCACHE 9 /* disable controller cache */
63 #if defined(__FreeBSD__)
64 /* Set block size for device. If device is a variable size dev */
65 /* a non zero parameter will change the device to a fixed block size */
66 /* device with block size set to that of the parameter passed in. */
67 /* Resetting the block size to 0 will restore the device to a variable */
68 /* block size device. */
72 /* Set density values for device. Sets the value for the opened mode only. */
76 #define MTERASE 12 /* erase to EOM */
77 #define MTEOD 13 /* Space to EOM */
78 #define MTCOMP 14 /* select compression mode 0=off, 1=def */
79 #define MTRETENS 15 /* re-tension tape */
80 #define MTWSS 16 /* write setmark(s) */
81 #define MTFSS 17 /* forward space setmark */
82 #define MTBSS 18 /* backward space setmark */
83 #define MTLOAD 19 /* load tape in drive */
84 #define MTWEOFI 20 /* write an end-of-file record without waiting*/
86 #define MT_COMP_ENABLE 0xffffffff
87 #define MT_COMP_DISABLED 0xfffffffe
88 #define MT_COMP_UNSUPP 0xfffffffd
91 * Values in mt_dsreg that say what the device is doing
93 #define MTIO_DSREG_NIL 0 /* Unknown */
94 #define MTIO_DSREG_REST 1 /* Doing Nothing */
95 #define MTIO_DSREG_RBSY 2 /* Communicating with tape (but no motion) */
96 #define MTIO_DSREG_WR 20 /* Writing */
97 #define MTIO_DSREG_FMK 21 /* Writing Filemarks */
98 #define MTIO_DSREG_ZER 22 /* Erasing */
99 #define MTIO_DSREG_RD 30 /* Reading */
100 #define MTIO_DSREG_FWD 40 /* Spacing Forward */
101 #define MTIO_DSREG_REV 41 /* Spacing Reverse */
102 #define MTIO_DSREG_POS 42 /* Hardware Positioning (direction unknown) */
103 #define MTIO_DSREG_REW 43 /* Rewinding */
104 #define MTIO_DSREG_TEN 44 /* Retensioning */
105 #define MTIO_DSREG_UNL 45 /* Unloading */
106 #define MTIO_DSREG_LD 46 /* Loading */
108 #endif /* __FreeBSD__ */
110 /* structure for MTIOCGET - mag tape get status command */
113 short mt_type; /* type of magtape device */
114 /* the following two registers are grossly device dependent */
115 short mt_dsreg; /* ``drive status'' register */
116 short mt_erreg; /* ``error'' register */
117 /* end device-dependent registers */
119 * Note that the residual count, while maintained, may be
120 * be nonsense because the size of the residual may (greatly)
121 * exceed 32 K-bytes. Use the MTIOCERRSTAT ioctl to get a
122 * more accurate count.
124 short mt_resid; /* residual count */
125 #if defined (__FreeBSD__)
126 int32_t mt_blksiz; /* presently operating blocksize */
127 int32_t mt_density; /* presently operating density */
128 u_int32_t mt_comp; /* presently operating compression */
129 int32_t mt_blksiz0; /* blocksize for mode 0 */
130 int32_t mt_blksiz1; /* blocksize for mode 1 */
131 int32_t mt_blksiz2; /* blocksize for mode 2 */
132 int32_t mt_blksiz3; /* blocksize for mode 3 */
133 int32_t mt_density0; /* density for mode 0 */
134 int32_t mt_density1; /* density for mode 1 */
135 int32_t mt_density2; /* density for mode 2 */
136 int32_t mt_density3; /* density for mode 3 */
137 /* the following are not yet implemented */
138 u_int32_t mt_comp0; /* compression type for mode 0 */
139 u_int32_t mt_comp1; /* compression type for mode 1 */
140 u_int32_t mt_comp2; /* compression type for mode 2 */
141 u_int32_t mt_comp3; /* compression type for mode 3 */
142 /* end not yet implemented */
144 int32_t mt_fileno; /* relative file number of current position */
145 int32_t mt_blkno; /* relative block number of current position */
148 /* structure for MTIOCERRSTAT - tape get error status command */
149 /* really only supported for SCSI tapes right now */
150 struct scsi_tape_errors {
152 * These are latched from the last command that had a SCSI
153 * Check Condition noted for these operations. The act
154 * of issuing an MTIOCERRSTAT unlatches and clears them.
156 u_int8_t io_sense[32]; /* Last Sense Data For Data I/O */
157 int32_t io_resid; /* residual count from last Data I/O */
158 u_int8_t io_cdb[16]; /* Command that Caused the Last Data Sense */
159 u_int8_t ctl_sense[32]; /* Last Sense Data For Control I/O */
160 int32_t ctl_resid; /* residual count from last Control I/O */
161 u_int8_t ctl_cdb[16]; /* Command that Caused the Last Control Sense */
163 * These are the read and write cumulative error counters.
164 * (how to reset cumulative error counters is not yet defined).
165 * (not implemented as yet but space is being reserved for them)
168 u_int32_t retries; /* total # retries performed */
169 u_int32_t corrected; /* total # corrections performed */
170 u_int32_t processed; /* total # corrections successful */
171 u_int32_t failures; /* total # corrections/retries failed */
172 u_int64_t nbytes; /* total # bytes processed */
177 struct scsi_tape_errors scsi_errstat;
178 char _reserved_padding[256];
182 uint32_t granularity;
183 uint32_t min_block_length;
184 uint32_t max_block_length;
188 MT_LOCATE_DEST_OBJECT = 0x00,
189 MT_LOCATE_DEST_FILE = 0x01,
190 MT_LOCATE_DEST_SET = 0x02,
191 MT_LOCATE_DEST_EOD = 0x03
192 } mt_locate_dest_type;
195 MT_LOCATE_BAM_IMPLICIT = 0x00,
196 MT_LOCATE_BAM_EXPLICIT = 0x01
200 MT_LOCATE_FLAG_IMMED = 0x01,
201 MT_LOCATE_FLAG_CHANGE_PART = 0x02
205 mt_locate_flags flags;
206 mt_locate_dest_type dest_type;
207 mt_locate_bam block_address_mode;
210 uint8_t reserved[64];
216 MT_EXT_GET_NEED_MORE_SPACE,
224 mt_ext_get_status status;
226 uint8_t reserved[64];
229 #define MT_EXT_GET_ROOT_NAME "mtextget"
230 #define MT_DENSITY_ROOT_NAME "mtdensity"
231 #define MT_MEDIA_DENSITY_NAME "media_density"
232 #define MT_DENSITY_REPORT_NAME "density_report"
233 #define MT_MEDIUM_TYPE_REPORT_NAME "medium_type_report"
234 #define MT_MEDIA_REPORT_NAME "media_report"
235 #define MT_DENSITY_ENTRY_NAME "density_entry"
237 #define MT_DENS_WRITE_OK 0x80
238 #define MT_DENS_DUP 0x40
239 #define MT_DENS_DEFLT 0x20
242 #define MT_PARAM_FIXED_STR_LEN 32
243 union mt_param_value {
244 int64_t value_signed;
245 uint64_t value_unsigned;
247 char value_fixed_str[MT_PARAM_FIXED_STR_LEN];
248 uint8_t reserved[64];
254 MT_PARAM_SET_UNSIGNED,
255 MT_PARAM_SET_VAR_STR,
256 MT_PARAM_SET_FIXED_STR
260 MT_PARAM_STATUS_NONE,
262 MT_PARAM_STATUS_ERROR
263 } mt_param_set_status;
265 #define MT_PARAM_VALUE_NAME_LEN 64
267 char value_name[MT_PARAM_VALUE_NAME_LEN];
268 mt_param_set_type value_type;
270 union mt_param_value value;
271 mt_param_set_status status;
275 #define MT_PARAM_ROOT_NAME "mtparamget"
276 #define MT_PROTECTION_NAME "protection"
279 * Set a list of parameters.
284 struct mtparamset *params;
288 * Constants for mt_type byte. These are the same
289 * for controllers compatible with the types listed.
291 #define MT_ISTS 0x01 /* TS-11 */
292 #define MT_ISHT 0x02 /* TM03 Massbus: TE16, TU45, TU77 */
293 #define MT_ISTM 0x03 /* TM11/TE10 Unibus */
294 #define MT_ISMT 0x04 /* TM78/TU78 Massbus */
295 #define MT_ISUT 0x05 /* SI TU-45 emulation on Unibus */
296 #define MT_ISCPC 0x06 /* SUN */
297 #define MT_ISAR 0x07 /* SUN */
298 #define MT_ISTMSCP 0x08 /* DEC TMSCP protocol (TU81, TK50) */
299 #define MT_ISCY 0x09 /* CCI Cipher */
300 #define MT_ISCT 0x0a /* HP 1/4 tape */
301 #define MT_ISFHP 0x0b /* HP 7980 1/2 tape */
302 #define MT_ISEXABYTE 0x0c /* Exabyte */
303 #define MT_ISEXA8200 0x0c /* Exabyte EXB-8200 */
304 #define MT_ISEXA8500 0x0d /* Exabyte EXB-8500 */
305 #define MT_ISVIPER1 0x0e /* Archive Viper-150 */
306 #define MT_ISPYTHON 0x0f /* Archive Python (DAT) */
307 #define MT_ISHPDAT 0x10 /* HP 35450A DAT drive */
308 #define MT_ISMFOUR 0x11 /* M4 Data 1/2 9track drive */
309 #define MT_ISTK50 0x12 /* DEC SCSI TK50 */
310 #define MT_ISMT02 0x13 /* Emulex MT02 SCSI tape controller */
312 /* mag tape io control commands */
313 #define MTIOCTOP _IOW('m', 1, struct mtop) /* do a mag tape op */
314 #define MTIOCGET _IOR('m', 2, struct mtget) /* get tape status */
315 /* these two do not appear to be used anywhere */
316 #define MTIOCIEOT _IO('m', 3) /* ignore EOT error */
317 #define MTIOCEEOT _IO('m', 4) /* enable EOT error */
319 * When more SCSI-3 SSC (streaming device) devices are out there
320 * that support the full 32 byte type 2 structure, we'll have to
321 * rethink these ioctls to support all the entities they haul into
322 * the picture (64 bit blocks, logical file record numbers, etc..).
324 #define MTIOCRDSPOS _IOR('m', 5, u_int32_t) /* get logical blk addr */
325 #define MTIOCRDHPOS _IOR('m', 6, u_int32_t) /* get hardware blk addr */
326 #define MTIOCSLOCATE _IOW('m', 5, u_int32_t) /* seek to logical blk addr */
327 #define MTIOCHLOCATE _IOW('m', 6, u_int32_t) /* seek to hardware blk addr */
328 #define MTIOCERRSTAT _IOR('m', 7, union mterrstat) /* get tape errors */
331 * Set EOT model- argument is number of filemarks to end a tape with.
332 * Note that not all possible values will be accepted.
334 #define MTIOCSETEOTMODEL _IOW('m', 8, u_int32_t)
335 /* Get current EOT model */
336 #define MTIOCGETEOTMODEL _IOR('m', 8, u_int32_t)
338 #define MTIOCRBLIM _IOR('m', 9, struct mtrblim) /* get block limits */
339 #define MTIOCEXTLOCATE _IOW('m', 10, struct mtlocate) /* seek to position */
340 #define MTIOCEXTGET _IOWR('m', 11, struct mtextget) /* get tape status */
341 #define MTIOCPARAMGET _IOWR('m', 12, struct mtextget) /* get tape params */
342 #define MTIOCPARAMSET _IOWR('m', 13, struct mtparamset) /* set tape params */
343 #define MTIOCSETLIST _IOWR('m', 14, struct mtsetlist) /* set N params */
346 #define DEFTAPE "/dev/nsa0"
349 #endif /* !_SYS_MTIO_H_ */