sys/sys/mtio.h

   1 /*
   2  * Copyright (c) 1982, 1986, 1993
   3  *      The Regents of the University of California.  All rights reserved.
   4  *
   5  * Redistribution and use in source and binary forms, with or without
   6  * modification, are permitted provided that the following conditions
   7  * are met:
   8  * 1. Redistributions of source code must retain the above copyright
   9  *    notice, this list of conditions and the following disclaimer.
  10  * 2. Redistributions in binary form must reproduce the above copyright
  11  *    notice, this list of conditions and the following disclaimer in the
  12  *    documentation and/or other materials provided with the distribution.
  13  * 3. Neither the name of the University nor the names of its contributors
  14  *    may be used to endorse or promote products derived from this software
  15  *    without specific prior written permission.
  16  *
  17  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  18  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  19  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  20  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  21  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  22  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  23  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  24  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  25  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  26  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  27  * SUCH DAMAGE.
  28  *
  29  *      @(#)mtio.h      8.1 (Berkeley) 6/2/93
  30  * $FreeBSD: src/sys/sys/mtio.h,v 1.20.2.2 2001/01/22 18:02:47 mjacob Exp $
  31  * $DragonFly: src/sys/sys/mtio.h,v 1.4 2006/05/20 02:42:13 dillon Exp $
  32  */
  33
  34 #ifndef _SYS_MTIO_H_
  35 #define _SYS_MTIO_H_
  36
  37 #ifndef _SYS_TYPES_H_
  38 #include <sys/types.h>
  39 #endif
  40 #ifndef _SYS_IOCCOM_H_
  41 #include <sys/ioccom.h>
  42 #endif
  43
  44 /*
  45  * Structures and definitions for mag tape io control commands
  46  */
  47
  48 /* structure for MTIOCTOP - mag tape op command */
  49 struct mtop {
  50         short   mt_op;          /* operations defined below */
  51         daddr_t mt_count;       /* how many of them */
  52 };
  53
  54 /* operations */
  55 #define MTWEOF          0       /* write an end-of-file record */
  56 #define MTFSF           1       /* forward space file */
  57 #define MTBSF           2       /* backward space file */
  58 #define MTFSR           3       /* forward space record */
  59 #define MTBSR           4       /* backward space record */
  60 #define MTREW           5       /* rewind */
  61 #define MTOFFL          6       /* rewind and put the drive offline */
  62 #define MTNOP           7       /* no operation, sets status only */
  63 #define MTCACHE         8       /* enable controller cache */
  64 #define MTNOCACHE       9       /* disable controller cache */
  65
  66 #if defined(__DragonFly__)
  67 /* Set block size for device. If device is a variable size dev          */
  68 /* a non zero parameter will change the device to a fixed block size    */
  69 /* device with block size set to that of the parameter passed in.       */
  70 /* Resetting the block size to 0 will restore the device to a variable  */
  71 /* block size device. */
  72
  73 #define MTSETBSIZ       10
  74
  75 /* Set density values for device. Sets the value for the opened mode only. */
  76
  77 #define MTSETDNSTY      11
  78
  79 #define MTERASE         12      /* erase to EOM */
  80 #define MTEOD           13      /* Space to EOM */
  81 #define MTCOMP          14      /* select compression mode 0=off, 1=def */
  82 #define MTRETENS        15      /* re-tension tape */
  83 #define MTWSS           16      /* write setmark(s) */
  84 #define MTFSS           17      /* forward space setmark */
  85 #define MTBSS           18      /* backward space setmark */
  86
  87 #define MT_COMP_ENABLE          0xffffffff
  88 #define MT_COMP_DISABLED        0xfffffffe
  89 #define MT_COMP_UNSUPP          0xfffffffd
  90
  91 /*
  92  * Values in mt_dsreg that say what the device is doing
  93  */
  94 #define MTIO_DSREG_NIL  0       /* Unknown */
  95 #define MTIO_DSREG_REST 1       /* Doing Nothing */
  96 #define MTIO_DSREG_RBSY 2       /* Communicating with tape (but no motion) */
  97 #define MTIO_DSREG_WR   20      /* Writing */
  98 #define MTIO_DSREG_FMK  21      /* Writing Filemarks */
  99 #define MTIO_DSREG_ZER  22      /* Erasing */
 100 #define MTIO_DSREG_RD   30      /* Reading */
 101 #define MTIO_DSREG_FWD  40      /* Spacing Forward */
 102 #define MTIO_DSREG_REV  41      /* Spacing Reverse */
 103 #define MTIO_DSREG_POS  42      /* Hardware Positioning (direction unknown) */
 104 #define MTIO_DSREG_REW  43      /* Rewinding */
 105 #define MTIO_DSREG_TEN  44      /* Retensioning */
 106 #define MTIO_DSREG_UNL  45      /* Unloading */
 107 #define MTIO_DSREG_LD   46      /* Loading */
 108
 109 #endif  /* __DragonFly__ */
 110
 111 /* structure for MTIOCGET - mag tape get status command */
 112
 113 struct mtget {
 114         short   mt_type;        /* type of magtape device */
 115 /* the following two registers are grossly device dependent */
 116         short   mt_dsreg;       /* ``drive status'' register */
 117         short   mt_erreg;       /* ``error'' register */
 118 /* end device-dependent registers */
 119         /*
 120          * Note that the residual count, while maintained, may be
 121          * be nonsense because the size of the residual may (greatly)
 122          * exceed 32 K-bytes. Use the MTIOCERRSTAT ioctl to get a
 123          * more accurate count.
 124          */
 125         short   mt_resid;       /* residual count */
 126 #if defined (__DragonFly__)
 127         daddr_t mt_blksiz;      /* presently operating blocksize */
 128         daddr_t mt_density;     /* presently operating density */
 129         u_int32_t mt_comp;      /* presently operating compression */
 130         daddr_t mt_blksiz0;     /* blocksize for mode 0 */
 131         daddr_t mt_blksiz1;     /* blocksize for mode 1 */
 132         daddr_t mt_blksiz2;     /* blocksize for mode 2 */
 133         daddr_t mt_blksiz3;     /* blocksize for mode 3 */
 134         daddr_t mt_density0;    /* density for mode 0 */
 135         daddr_t mt_density1;    /* density for mode 1 */
 136         daddr_t mt_density2;    /* density for mode 2 */
 137         daddr_t mt_density3;    /* density for mode 3 */
 138 /* the following are not yet implemented */
 139         u_int32_t mt_comp0;     /* compression type for mode 0 */
 140         u_int32_t mt_comp1;     /* compression type for mode 1 */
 141         u_int32_t mt_comp2;     /* compression type for mode 2 */
 142         u_int32_t mt_comp3;     /* compression type for mode 3 */
 143 /* end not yet implemented */
 144 #endif
 145         daddr_t mt_fileno;      /* relative file number of current position */
 146         daddr_t mt_blkno;       /* relative block number of current position */
 147 };
 148
 149 /* structure for MTIOCERRSTAT - tape get error status command */
 150 /* really only supported for SCSI tapes right now */
 151 struct scsi_tape_errors {
 152         /*
 153          * These are latched from the last command that had a SCSI
 154          * Check Condition noted for these operations. The act
 155          * of issuing an MTIOCERRSTAT unlatches and clears them.
 156          */
 157         u_int8_t io_sense[32];  /* Last Sense Data For Data I/O */
 158         int32_t io_resid;       /* residual count from last Data I/O */
 159         u_int8_t io_cdb[16];    /* Command that Caused the Last Data Sense */
 160         u_int8_t ctl_sense[32]; /* Last Sense Data For Control I/O */
 161         int32_t ctl_resid;      /* residual count from last Control I/O */
 162         u_int8_t ctl_cdb[16];   /* Command that Caused the Last Control Sense */
 163         /*
 164          * These are the read and write cumulative error counters.
 165          * (how to reset cumulative error counters is not yet defined).
 166          * (not implemented as yet but space is being reserved for them)
 167          */
 168         struct {
 169                 u_int32_t retries;      /* total # retries performed */
 170                 u_int32_t corrected;    /* total # corrections performed */
 171                 u_int32_t processed;    /* total # corrections succssful */
 172                 u_int32_t failures;     /* total # corrections/retries failed */
 173                 u_int64_t nbytes;       /* total # bytes processed */
 174         } wterr, rderr;
 175 };
 176
 177 union mterrstat {
 178         struct scsi_tape_errors scsi_errstat;
 179         char _reserved_padding[256];
 180 };
 181
 182 /*
 183  * Constants for mt_type byte.  These are the same
 184  * for controllers compatible with the types listed.
 185  */
 186 #define MT_ISTS         0x01            /* TS-11 */
 187 #define MT_ISHT         0x02            /* TM03 Massbus: TE16, TU45, TU77 */
 188 #define MT_ISTM         0x03            /* TM11/TE10 Unibus */
 189 #define MT_ISMT         0x04            /* TM78/TU78 Massbus */
 190 #define MT_ISUT         0x05            /* SI TU-45 emulation on Unibus */
 191 #define MT_ISCPC        0x06            /* SUN */
 192 #define MT_ISAR         0x07            /* SUN */
 193 #define MT_ISTMSCP      0x08            /* DEC TMSCP protocol (TU81, TK50) */
 194 #define MT_ISCY         0x09            /* CCI Cipher */
 195 #define MT_ISCT         0x0a            /* HP 1/4 tape */
 196 #define MT_ISFHP        0x0b            /* HP 7980 1/2 tape */
 197 #define MT_ISEXABYTE    0x0c            /* Exabyte */
 198 #define MT_ISEXA8200    0x0c            /* Exabyte EXB-8200 */
 199 #define MT_ISEXA8500    0x0d            /* Exabyte EXB-8500 */
 200 #define MT_ISVIPER1     0x0e            /* Archive Viper-150 */
 201 #define MT_ISPYTHON     0x0f            /* Archive Python (DAT) */
 202 #define MT_ISHPDAT      0x10            /* HP 35450A DAT drive */
 203 #define MT_ISMFOUR      0x11            /* M4 Data 1/2 9track drive */
 204 #define MT_ISTK50       0x12            /* DEC SCSI TK50 */
 205 #define MT_ISMT02       0x13            /* Emulex MT02 SCSI tape controller */
 206
 207 /* mag tape io control commands */
 208 #define MTIOCTOP        _IOW('m', 1, struct mtop)       /* do a mag tape op */
 209 #define MTIOCGET        _IOR('m', 2, struct mtget)      /* get tape status */
 210 /* these two do not appear to be used anywhere */
 211 #define MTIOCIEOT       _IO('m', 3)                     /* ignore EOT error */
 212 #define MTIOCEEOT       _IO('m', 4)                     /* enable EOT error */
 213 /*
 214  * When more SCSI-3 SSC (streaming device) devices are out there
 215  * that support the full 32 byte type 2 structure, we'll have to
 216  * rethink these ioctls to support all the entities they haul into
 217  * the picture (64 bit blocks, logical file record numbers, etc..).
 218  */
 219 #define MTIOCRDSPOS     _IOR('m', 5, u_int32_t) /* get logical blk addr */
 220 #define MTIOCRDHPOS     _IOR('m', 6, u_int32_t) /* get hardware blk addr */
 221 #define MTIOCSLOCATE    _IOW('m', 5, u_int32_t) /* seek to logical blk addr */
 222 #define MTIOCHLOCATE    _IOW('m', 6, u_int32_t) /* seek to hardware blk addr */
 223 #define MTIOCERRSTAT    _IOR('m', 7, union mterrstat)   /* get tape errors */
 224 /*
 225  * Set EOT model- argument is number of filemarks to end a tape with.
 226  * Note that not all possible values will be accepted.
 227  */
 228 #define MTIOCSETEOTMODEL        _IOW('m', 8, u_int32_t)
 229 /* Get current EOT model */
 230 #define MTIOCGETEOTMODEL        _IOR('m', 8, u_int32_t)
 231
 232 #ifndef _KERNEL
 233 #define DEFTAPE "/dev/nsa0"
 234 #endif
 235
 236 #ifdef  _KERNEL
 237 /*
 238  * minor device number
 239  */
 240
 241 #define T_UNIT          003             /* unit selection */
 242 #define T_NOREWIND      004             /* no rewind on close */
 243 #define T_DENSEL        030             /* density select */
 244 #define T_800BPI        000             /* select  800 bpi */
 245 #define T_1600BPI       010             /* select 1600 bpi */
 246 #define T_6250BPI       020             /* select 6250 bpi */
 247 #define T_BADBPI        030             /* undefined selection */
 248 #endif
 249
 250 #endif /* !_SYS_MTIO_H_ */