include/linux/mtio.h

   1 /*
   2  * linux/mtio.h header file for Linux. Written by H. Bergman
   3  *
   4  * Modified for special ioctls provided by zftape in September 1997
   5  * by C.-J. Heine.
   6  */
   7
   8 #ifndef _LINUX_MTIO_H
   9 #define _LINUX_MTIO_H
  10
  11 #include <linux/types.h>
  12 #include <linux/ioctl.h>
  13
  14 /*
  15  * Structures and definitions for mag tape io control commands
  16  */
  17
  18 /* structure for MTIOCTOP - mag tape op command */
  19 struct  mtop {
  20         short   mt_op;          /* operations defined below */
  21         int     mt_count;       /* how many of them */
  22 };
  23
  24 /* Magnetic Tape operations [Not all operations supported by all drivers]: */
  25 #define MTRESET 0       /* +reset drive in case of problems */
  26 #define MTFSF   1       /* forward space over FileMark,
  27                          * position at first record of next file
  28                          */
  29 #define MTBSF   2       /* backward space FileMark (position before FM) */
  30 #define MTFSR   3       /* forward space record */
  31 #define MTBSR   4       /* backward space record */
  32 #define MTWEOF  5       /* write an end-of-file record (mark) */
  33 #define MTREW   6       /* rewind */
  34 #define MTOFFL  7       /* rewind and put the drive offline (eject?) */
  35 #define MTNOP   8       /* no op, set status only (read with MTIOCGET) */
  36 #define MTRETEN 9       /* retension tape */
  37 #define MTBSFM  10      /* +backward space FileMark, position at FM */
  38 #define MTFSFM  11      /* +forward space FileMark, position at FM */
  39 #define MTEOM   12      /* goto end of recorded media (for appending files).
  40                          * MTEOM positions after the last FM, ready for
  41                          * appending another file.
  42                          */
  43 #define MTERASE 13      /* erase tape -- be careful! */
  44
  45 #define MTRAS1  14      /* run self test 1 (nondestructive) */
  46 #define MTRAS2  15      /* run self test 2 (destructive) */
  47 #define MTRAS3  16      /* reserved for self test 3 */
  48
  49 #define MTSETBLK 20     /* set block length (SCSI) */
  50 #define MTSETDENSITY 21 /* set tape density (SCSI) */
  51 #define MTSEEK  22      /* seek to block (Tandberg, etc.) */
  52 #define MTTELL  23      /* tell block (Tandberg, etc.) */
  53 #define MTSETDRVBUFFER 24 /* set the drive buffering according to SCSI-2 */
  54                         /* ordinary buffered operation with code 1 */
  55 #define MTFSS   25      /* space forward over setmarks */
  56 #define MTBSS   26      /* space backward over setmarks */
  57 #define MTWSM   27      /* write setmarks */
  58
  59 #define MTLOCK  28      /* lock the drive door */
  60 #define MTUNLOCK 29     /* unlock the drive door */
  61 #define MTLOAD  30      /* execute the SCSI load command */
  62 #define MTUNLOAD 31     /* execute the SCSI unload command */
  63 #define MTCOMPRESSION 32/* control compression with SCSI mode page 15 */
  64 #define MTSETPART 33    /* Change the active tape partition */
  65 #define MTMKPART  34    /* Format the tape with one or two partitions */
  66
  67 /* structure for MTIOCGET - mag tape get status command */
  68
  69 struct  mtget {
  70         long    mt_type;        /* type of magtape device */
  71         long    mt_resid;       /* residual count: (not sure)
  72                                  *      number of bytes ignored, or
  73                                  *      number of files not skipped, or
  74                                  *      number of records not skipped.
  75                                  */
  76         /* the following registers are device dependent */
  77         long    mt_dsreg;       /* status register */
  78         long    mt_gstat;       /* generic (device independent) status */
  79         long    mt_erreg;       /* error register */
  80         /* The next two fields are not always used */
  81         __kernel_daddr_t mt_fileno;     /* number of current file on tape */
  82         __kernel_daddr_t mt_blkno;      /* current block number */
  83 };
  84
  85
  86
  87 /*
  88  * Constants for mt_type. Not all of these are supported,
  89  * and these are not all of the ones that are supported.
  90  */
  91 #define MT_ISUNKNOWN            0x01
  92 #define MT_ISQIC02              0x02    /* Generic QIC-02 tape streamer */
  93 #define MT_ISWT5150             0x03    /* Wangtek 5150EQ, QIC-150, QIC-02 */
  94 #define MT_ISARCHIVE_5945L2     0x04    /* Archive 5945L-2, QIC-24, QIC-02? */
  95 #define MT_ISCMSJ500            0x05    /* CMS Jumbo 500 (QIC-02?) */
  96 #define MT_ISTDC3610            0x06    /* Tandberg 6310, QIC-24 */
  97 #define MT_ISARCHIVE_VP60I      0x07    /* Archive VP60i, QIC-02 */
  98 #define MT_ISARCHIVE_2150L      0x08    /* Archive Viper 2150L */
  99 #define MT_ISARCHIVE_2060L      0x09    /* Archive Viper 2060L */
 100 #define MT_ISARCHIVESC499       0x0A    /* Archive SC-499 QIC-36 controller */
 101 #define MT_ISQIC02_ALL_FEATURES 0x0F    /* Generic QIC-02 with all features */
 102 #define MT_ISWT5099EEN24        0x11    /* Wangtek 5099-een24, 60MB, QIC-24 */
 103 #define MT_ISTEAC_MT2ST         0x12    /* Teac MT-2ST 155mb drive, Teac DC-1 card (Wangtek type) */
 104 #define MT_ISEVEREX_FT40A       0x32    /* Everex FT40A (QIC-40) */
 105 #define MT_ISDDS1               0x51    /* DDS device without partitions */
 106 #define MT_ISDDS2               0x52    /* DDS device with partitions */
 107 #define MT_ISONSTREAM_SC        0x61   /* OnStream SCSI tape drives (SC-x0)
 108                                           and SCSI emulated (DI, DP, USB) */
 109 #define MT_ISSCSI1              0x71    /* Generic ANSI SCSI-1 tape unit */
 110 #define MT_ISSCSI2              0x72    /* Generic ANSI SCSI-2 tape unit */
 111
 112 /* QIC-40/80/3010/3020 ftape supported drives.
 113  * 20bit vendor ID + 0x800000 (see ftape-vendors.h)
 114  */
 115 #define MT_ISFTAPE_UNKNOWN      0x800000 /* obsolete */
 116 #define MT_ISFTAPE_FLAG 0x800000
 117
 118
 119 /* structure for MTIOCPOS - mag tape get position command */
 120
 121 struct  mtpos {
 122         long    mt_blkno;       /* current block number */
 123 };
 124
 125
 126 /* mag tape io control commands */
 127 #define MTIOCTOP        _IOW('m', 1, struct mtop)       /* do a mag tape op */
 128 #define MTIOCGET        _IOR('m', 2, struct mtget)      /* get tape status */
 129 #define MTIOCPOS        _IOR('m', 3, struct mtpos)      /* get tape position */
 130
 131
 132 /* Generic Mag Tape (device independent) status macros for examining
 133  * mt_gstat -- HP-UX compatible.
 134  * There is room for more generic status bits here, but I don't
 135  * know which of them are reserved. At least three or so should
 136  * be added to make this really useful.
 137  */
 138 #define GMT_EOF(x)              ((x) & 0x80000000)
 139 #define GMT_BOT(x)              ((x) & 0x40000000)
 140 #define GMT_EOT(x)              ((x) & 0x20000000)
 141 #define GMT_SM(x)               ((x) & 0x10000000)  /* DDS setmark */
 142 #define GMT_EOD(x)              ((x) & 0x08000000)  /* DDS EOD */
 143 #define GMT_WR_PROT(x)          ((x) & 0x04000000)
 144 /* #define GMT_ ?               ((x) & 0x02000000) */
 145 #define GMT_ONLINE(x)           ((x) & 0x01000000)
 146 #define GMT_D_6250(x)           ((x) & 0x00800000)
 147 #define GMT_D_1600(x)           ((x) & 0x00400000)
 148 #define GMT_D_800(x)            ((x) & 0x00200000)
 149 /* #define GMT_ ?               ((x) & 0x00100000) */
 150 /* #define GMT_ ?               ((x) & 0x00080000) */
 151 #define GMT_DR_OPEN(x)          ((x) & 0x00040000)  /* door open (no tape) */
 152 /* #define GMT_ ?               ((x) & 0x00020000) */
 153 #define GMT_IM_REP_EN(x)        ((x) & 0x00010000)  /* immediate report mode */
 154 #define GMT_CLN(x)              ((x) & 0x00008000)  /* cleaning requested */
 155 /* 15 generic status bits unused */
 156
 157
 158 /* SCSI-tape specific definitions */
 159 /* Bitfield shifts in the status  */
 160 #define MT_ST_BLKSIZE_SHIFT     0
 161 #define MT_ST_BLKSIZE_MASK      0xffffff
 162 #define MT_ST_DENSITY_SHIFT     24
 163 #define MT_ST_DENSITY_MASK      0xff000000
 164
 165 #define MT_ST_SOFTERR_SHIFT     0
 166 #define MT_ST_SOFTERR_MASK      0xffff
 167
 168 /* Bitfields for the MTSETDRVBUFFER ioctl */
 169 #define MT_ST_OPTIONS           0xf0000000
 170 #define MT_ST_BOOLEANS          0x10000000
 171 #define MT_ST_SETBOOLEANS       0x30000000
 172 #define MT_ST_CLEARBOOLEANS     0x40000000
 173 #define MT_ST_WRITE_THRESHOLD   0x20000000
 174 #define MT_ST_DEF_BLKSIZE       0x50000000
 175 #define MT_ST_DEF_OPTIONS       0x60000000
 176 #define MT_ST_TIMEOUTS          0x70000000
 177 #define MT_ST_SET_TIMEOUT       (MT_ST_TIMEOUTS | 0x000000)
 178 #define MT_ST_SET_LONG_TIMEOUT  (MT_ST_TIMEOUTS | 0x100000)
 179 #define MT_ST_SET_CLN           0x80000000
 180
 181 #define MT_ST_BUFFER_WRITES     0x1
 182 #define MT_ST_ASYNC_WRITES      0x2
 183 #define MT_ST_READ_AHEAD        0x4
 184 #define MT_ST_DEBUGGING         0x8
 185 #define MT_ST_TWO_FM            0x10
 186 #define MT_ST_FAST_MTEOM        0x20
 187 #define MT_ST_AUTO_LOCK         0x40
 188 #define MT_ST_DEF_WRITES        0x80
 189 #define MT_ST_CAN_BSR           0x100
 190 #define MT_ST_NO_BLKLIMS        0x200
 191 #define MT_ST_CAN_PARTITIONS    0x400
 192 #define MT_ST_SCSI2LOGICAL      0x800
 193 #define MT_ST_SYSV              0x1000
 194 #define MT_ST_NOWAIT            0x2000
 195
 196 /* The mode parameters to be controlled. Parameter chosen with bits 20-28 */
 197 #define MT_ST_CLEAR_DEFAULT     0xfffff
 198 #define MT_ST_DEF_DENSITY       (MT_ST_DEF_OPTIONS | 0x100000)
 199 #define MT_ST_DEF_COMPRESSION   (MT_ST_DEF_OPTIONS | 0x200000)
 200 #define MT_ST_DEF_DRVBUFFER     (MT_ST_DEF_OPTIONS | 0x300000)
 201
 202 /* The offset for the arguments for the special HP changer load command. */
 203 #define MT_ST_HPLOADER_OFFSET 10000
 204
 205 #endif /* _LINUX_MTIO_H */