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33 * @(#)mtio.h 8.1 (Berkeley) 6/2/93
34 * $FreeBSD: src/sys/sys/mtio.h,v 1.20.2.2 2001/01/22 18:02:47 mjacob Exp $
35 * $DragonFly: src/sys/sys/mtio.h,v 1.3 2004/02/06 03:20:47 rob Exp $
42 #include <sys/types.h>
44 #include <sys/ioccom.h>
47 * Structures and definitions for mag tape io control commands
50 /* structure for MTIOCTOP - mag tape op command */
52 short mt_op
; /* operations defined below */
53 daddr_t mt_count
; /* how many of them */
57 #define MTWEOF 0 /* write an end-of-file record */
58 #define MTFSF 1 /* forward space file */
59 #define MTBSF 2 /* backward space file */
60 #define MTFSR 3 /* forward space record */
61 #define MTBSR 4 /* backward space record */
62 #define MTREW 5 /* rewind */
63 #define MTOFFL 6 /* rewind and put the drive offline */
64 #define MTNOP 7 /* no operation, sets status only */
65 #define MTCACHE 8 /* enable controller cache */
66 #define MTNOCACHE 9 /* disable controller cache */
68 #if defined(__DragonFly__)
69 /* Set block size for device. If device is a variable size dev */
70 /* a non zero parameter will change the device to a fixed block size */
71 /* device with block size set to that of the parameter passed in. */
72 /* Resetting the block size to 0 will restore the device to a variable */
73 /* block size device. */
77 /* Set density values for device. Sets the value for the opened mode only. */
81 #define MTERASE 12 /* erase to EOM */
82 #define MTEOD 13 /* Space to EOM */
83 #define MTCOMP 14 /* select compression mode 0=off, 1=def */
84 #define MTRETENS 15 /* re-tension tape */
85 #define MTWSS 16 /* write setmark(s) */
86 #define MTFSS 17 /* forward space setmark */
87 #define MTBSS 18 /* backward space setmark */
89 #define MT_COMP_ENABLE 0xffffffff
90 #define MT_COMP_DISABLED 0xfffffffe
91 #define MT_COMP_UNSUPP 0xfffffffd
94 * Values in mt_dsreg that say what the device is doing
96 #define MTIO_DSREG_NIL 0 /* Unknown */
97 #define MTIO_DSREG_REST 1 /* Doing Nothing */
98 #define MTIO_DSREG_RBSY 2 /* Communicating with tape (but no motion) */
99 #define MTIO_DSREG_WR 20 /* Writing */
100 #define MTIO_DSREG_FMK 21 /* Writing Filemarks */
101 #define MTIO_DSREG_ZER 22 /* Erasing */
102 #define MTIO_DSREG_RD 30 /* Reading */
103 #define MTIO_DSREG_FWD 40 /* Spacing Forward */
104 #define MTIO_DSREG_REV 41 /* Spacing Reverse */
105 #define MTIO_DSREG_POS 42 /* Hardware Positioning (direction unknown) */
106 #define MTIO_DSREG_REW 43 /* Rewinding */
107 #define MTIO_DSREG_TEN 44 /* Retensioning */
108 #define MTIO_DSREG_UNL 45 /* Unloading */
109 #define MTIO_DSREG_LD 46 /* Loading */
111 #endif /* __DragonFly__ */
113 /* structure for MTIOCGET - mag tape get status command */
116 short mt_type
; /* type of magtape device */
117 /* the following two registers are grossly device dependent */
118 short mt_dsreg
; /* ``drive status'' register */
119 short mt_erreg
; /* ``error'' register */
120 /* end device-dependent registers */
122 * Note that the residual count, while maintained, may be
123 * be nonsense because the size of the residual may (greatly)
124 * exceed 32 K-bytes. Use the MTIOCERRSTAT ioctl to get a
125 * more accurate count.
127 short mt_resid
; /* residual count */
128 #if defined (__DragonFly__)
129 daddr_t mt_blksiz
; /* presently operating blocksize */
130 daddr_t mt_density
; /* presently operating density */
131 u_int32_t mt_comp
; /* presently operating compression */
132 daddr_t mt_blksiz0
; /* blocksize for mode 0 */
133 daddr_t mt_blksiz1
; /* blocksize for mode 1 */
134 daddr_t mt_blksiz2
; /* blocksize for mode 2 */
135 daddr_t mt_blksiz3
; /* blocksize for mode 3 */
136 daddr_t mt_density0
; /* density for mode 0 */
137 daddr_t mt_density1
; /* density for mode 1 */
138 daddr_t mt_density2
; /* density for mode 2 */
139 daddr_t mt_density3
; /* density for mode 3 */
140 /* the following are not yet implemented */
141 u_int32_t mt_comp0
; /* compression type for mode 0 */
142 u_int32_t mt_comp1
; /* compression type for mode 1 */
143 u_int32_t mt_comp2
; /* compression type for mode 2 */
144 u_int32_t mt_comp3
; /* compression type for mode 3 */
145 /* end not yet implemented */
147 daddr_t mt_fileno
; /* relative file number of current position */
148 daddr_t mt_blkno
; /* relative block number of current position */
151 /* structure for MTIOCERRSTAT - tape get error status command */
152 /* really only supported for SCSI tapes right now */
153 struct scsi_tape_errors
{
155 * These are latched from the last command that had a SCSI
156 * Check Condition noted for these operations. The act
157 * of issuing an MTIOCERRSTAT unlatches and clears them.
159 u_int8_t io_sense
[32]; /* Last Sense Data For Data I/O */
160 int32_t io_resid
; /* residual count from last Data I/O */
161 u_int8_t io_cdb
[16]; /* Command that Caused the Last Data Sense */
162 u_int8_t ctl_sense
[32]; /* Last Sense Data For Control I/O */
163 int32_t ctl_resid
; /* residual count from last Control I/O */
164 u_int8_t ctl_cdb
[16]; /* Command that Caused the Last Control Sense */
166 * These are the read and write cumulative error counters.
167 * (how to reset cumulative error counters is not yet defined).
168 * (not implemented as yet but space is being reserved for them)
171 u_int32_t retries
; /* total # retries performed */
172 u_int32_t corrected
; /* total # corrections performed */
173 u_int32_t processed
; /* total # corrections succssful */
174 u_int32_t failures
; /* total # corrections/retries failed */
175 u_int64_t nbytes
; /* total # bytes processed */
180 struct scsi_tape_errors scsi_errstat
;
181 char _reserved_padding
[256];
185 * Constants for mt_type byte. These are the same
186 * for controllers compatible with the types listed.
188 #define MT_ISTS 0x01 /* TS-11 */
189 #define MT_ISHT 0x02 /* TM03 Massbus: TE16, TU45, TU77 */
190 #define MT_ISTM 0x03 /* TM11/TE10 Unibus */
191 #define MT_ISMT 0x04 /* TM78/TU78 Massbus */
192 #define MT_ISUT 0x05 /* SI TU-45 emulation on Unibus */
193 #define MT_ISCPC 0x06 /* SUN */
194 #define MT_ISAR 0x07 /* SUN */
195 #define MT_ISTMSCP 0x08 /* DEC TMSCP protocol (TU81, TK50) */
196 #define MT_ISCY 0x09 /* CCI Cipher */
197 #define MT_ISCT 0x0a /* HP 1/4 tape */
198 #define MT_ISFHP 0x0b /* HP 7980 1/2 tape */
199 #define MT_ISEXABYTE 0x0c /* Exabyte */
200 #define MT_ISEXA8200 0x0c /* Exabyte EXB-8200 */
201 #define MT_ISEXA8500 0x0d /* Exabyte EXB-8500 */
202 #define MT_ISVIPER1 0x0e /* Archive Viper-150 */
203 #define MT_ISPYTHON 0x0f /* Archive Python (DAT) */
204 #define MT_ISHPDAT 0x10 /* HP 35450A DAT drive */
205 #define MT_ISMFOUR 0x11 /* M4 Data 1/2 9track drive */
206 #define MT_ISTK50 0x12 /* DEC SCSI TK50 */
207 #define MT_ISMT02 0x13 /* Emulex MT02 SCSI tape controller */
209 /* mag tape io control commands */
210 #define MTIOCTOP _IOW('m', 1, struct mtop) /* do a mag tape op */
211 #define MTIOCGET _IOR('m', 2, struct mtget) /* get tape status */
212 /* these two do not appear to be used anywhere */
213 #define MTIOCIEOT _IO('m', 3) /* ignore EOT error */
214 #define MTIOCEEOT _IO('m', 4) /* enable EOT error */
216 * When more SCSI-3 SSC (streaming device) devices are out there
217 * that support the full 32 byte type 2 structure, we'll have to
218 * rethink these ioctls to support all the entities they haul into
219 * the picture (64 bit blocks, logical file record numbers, etc..).
221 #define MTIOCRDSPOS _IOR('m', 5, u_int32_t) /* get logical blk addr */
222 #define MTIOCRDHPOS _IOR('m', 6, u_int32_t) /* get hardware blk addr */
223 #define MTIOCSLOCATE _IOW('m', 5, u_int32_t) /* seek to logical blk addr */
224 #define MTIOCHLOCATE _IOW('m', 6, u_int32_t) /* seek to hardware blk addr */
225 #define MTIOCERRSTAT _IOR('m', 7, union mterrstat) /* get tape errors */
227 * Set EOT model- argument is number of filemarks to end a tape with.
228 * Note that not all possible values will be accepted.
230 #define MTIOCSETEOTMODEL _IOW('m', 8, u_int32_t)
231 /* Get current EOT model */
232 #define MTIOCGETEOTMODEL _IOR('m', 8, u_int32_t)
235 #define DEFTAPE "/dev/nsa0"
240 * minor device number
243 #define T_UNIT 003 /* unit selection */
244 #define T_NOREWIND 004 /* no rewind on close */
245 #define T_DENSEL 030 /* density select */
246 #define T_800BPI 000 /* select 800 bpi */
247 #define T_1600BPI 010 /* select 1600 bpi */
248 #define T_6250BPI 020 /* select 6250 bpi */
249 #define T_BADBPI 030 /* undefined selection */
252 #endif /* !_SYS_MTIO_H_ */