root/include/linux/mtio.h

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   1 /* $Id: mtio.h,v 1.4 1992/11/18 01:32:03 root Exp root $
   2  *
   3  * linux/mtio.h header file for Linux. Written by H. Bergman
   4  */
   5 
   6 #ifndef _LINUX_MTIO_H
   7 #define _LINUX_MTIO_H
   8 
   9 #include <linux/ioctl.h>
  10 
  11 /*
  12  * Structures and definitions for mag tape io control commands
  13  */
  14 
  15 /* structure for MTIOCTOP - mag tape op command */
  16 struct  mtop {
  17         short   mt_op;          /* operations defined below */
  18         int     mt_count;       /* how many of them */
  19 };
  20 
  21 /* Magnetic Tape operations [Not all operations supported by all drivers]: */
  22 #define MTRESET 0       /* +reset drive in case of problems */
  23 #define MTFSF   1       /* forward space over FileMark,
  24                          * position at first record of next file 
  25                          */
  26 #define MTBSF   2       /* backward space FileMark (position before FM) */
  27 #define MTFSR   3       /* forward space record */
  28 #define MTBSR   4       /* backward space record */
  29 #define MTWEOF  5       /* write an end-of-file record (mark) */
  30 #define MTREW   6       /* rewind */
  31 #define MTOFFL  7       /* rewind and put the drive offline (eject?) */
  32 #define MTNOP   8       /* no op, set status only (read with MTIOCGET) */
  33 #define MTRETEN 9       /* retension tape */
  34 #define MTBSFM  10      /* +backward space FileMark, position at FM */
  35 #define MTFSFM  11      /* +forward space FileMark, position at FM */
  36 #define MTEOM   12      /* goto end of recorded media (for appending files).
  37                          * MTEOM positions after the last FM, ready for
  38                          * appending another file.
  39                          */
  40 #define MTERASE 13      /* erase tape -- be careful! */
  41 
  42 #define MTRAS1  14      /* run self test 1 (nondestructive) */
  43 #define MTRAS2  15      /* run self test 2 (destructive) */
  44 #define MTRAS3  16      /* reserved for self test 3 */
  45 
  46 
  47 #define MTSETBLK 20     /* set block length (SCSI) */
  48 #define MTSETDENSITY 21 /* set tape density (SCSI) */
  49 #define MTSEEK  22      /* seek to block (Tandberg, etc.) */
  50 #define MTTELL  23      /* tell block (Tandber, etc.) */
  51 #define MTSETDRVBUFFER 24 /* set the drive buffering according to SCSI-2 */
  52                         /* ordinary buffered operation with code 1 */
  53 
  54 
  55 /* structure for MTIOCGET - mag tape get status command */
  56 
  57 struct  mtget {
  58         long    mt_type;        /* type of magtape device */
  59         long    mt_resid;       /* residual count: (not sure)
  60                                  *      number of bytes ignored, or
  61                                  *      number of files not skipped, or
  62                                  *      number of records not skipped.
  63                                  */
  64         /* the following registers are device dependent */
  65         long    mt_dsreg;       /* status register */
  66         long    mt_gstat;       /* generic (device independent) status */
  67         long    mt_erreg;       /* error register */
  68         /* The next two fields are not always used */
  69         daddr_t mt_fileno;      /* number of current file on tape */
  70         daddr_t mt_blkno;       /* current block number */
  71 };
  72 
  73 /*
  74  * Constants for mt_type. Not all of these are supported.
  75  */
  76 #define MT_ISUNKNOWN            0x01
  77 #define MT_ISQIC02              0x02    /* Generic QIC-02 tape streamer */
  78 #define MT_ISWT5150             0x03    /* Wangtek 5150EQ, QIC-150, QIC-02 */
  79 #define MT_ISARCHIVE_5945L2     0x04    /* Archive 5945L-2, QIC-24, QIC-02? */
  80 #define MT_ISCMSJ500            0x05    /* CMS Jumbo 500 (QIC-02?) */
  81 #define MT_ISTDC3610            0x06    /* Tandberg 6310, QIC-24 */
  82 #define MT_ISARCHIVE_VP60I      0x07    /* Archive VP60i, QIC-02 */
  83 #define MT_ISARCHIVE_2150L      0x08    /* Archive Viper 2150L */
  84 #define MT_ISARCHIVE_2060L      0x09    /* Archive Viper 2060L */
  85 #define MT_ISQIC02_ALL_FEATURES 0x0F    /* Generic QIC-02 with all features */
  86 #define MT_ISWT5099EEN24        0x11    /* Wangtek 5099-een24, 60MB, QIC-24 */
  87 #define MT_ISEVEREX_FT40A       0x32    /* Everex FT40A (QIC-40) */
  88 #define MT_ISDDS1               0x51    /* DDS device without partitions */
  89 #define MT_ISDDS2               0x52    /* DDS device with partitions */
  90 #define MT_ISSCSI1              0x71    /* Generic ANSI SCSI-1 tape unit */
  91 
  92 struct mt_tape_info {
  93         long t_type;            /* device type id (mt_type) */
  94         char *t_name;           /* descriptive name */
  95 };
  96 #define MT_TAPE_INFO    { \
  97         {MT_ISUNKNOWN,          "Unknown type of tape device"}, \
  98         {MT_ISQIC02,            "Generic QIC-02 tape streamer"}, \
  99         {MT_ISWT5150,           "Wangtek 5150, QIC-150"}, \
 100         {MT_ISARCHIVE_5945L2,   "Archive 5945L-2"}, \
 101         {MT_ISCMSJ500,          "CMS Jumbo 500"}, \
 102         {MT_ISTDC3610,          "Tandberg TDC 3610, QIC-24"}, \
 103         {MT_ISARCHIVE_VP60I,    "Archive VP60i, QIC-02"}, \
 104         {MT_ISARCHIVE_2150L,    "Archive Viper 2150L"}, \
 105         {MT_ISARCHIVE_2060L,    "Archive Viper 2060L"}, \
 106         {MT_ISWT5099EEN24,      "Wangtek 5099-een24, 60MB"}, \
 107         {MT_ISEVEREX_FT40A,     "Everex FT40A, QIC-40"}, \
 108         {MT_ISSCSI1,            "Generic SCSI-1 tape"}, \
 109         {0, NULL} \
 110 }
 111 
 112 
 113 /* structure for MTIOCPOS - mag tape get position command */
 114 
 115 struct  mtpos {
 116         long    mt_blkno;       /* current block number */
 117 };
 118 
 119 
 120 /* mag tape io control commands */
 121 #define MTIOCTOP        _IOW('m', 1, struct mtop)       /* do a mag tape op */
 122 #define MTIOCGET        _IOR('m', 2, struct mtget)      /* get tape status */
 123 #define MTIOCPOS        _IOR('m', 3, struct mtpos)      /* get tape position */
 124 
 125 
 126 /* Generic Mag Tape (device independent) status macros for examining
 127  * mt_gstat -- HP-UX compatible.
 128  * There is room for more generic status bits here, but I don't
 129  * know which of them are reserved. At least three or so should
 130  * be added to make this really useful.
 131  */
 132 #define GMT_EOF(x)              ((x) & 0x80000000)
 133 #define GMT_BOT(x)              ((x) & 0x40000000)
 134 #define GMT_EOT(x)              ((x) & 0x20000000)
 135 #define GMT_SM(x)               ((x) & 0x10000000)  /* DDS setmark */
 136 #define GMT_EOD(x)              ((x) & 0x08000000)  /* DDS EOD */
 137 #define GMT_WR_PROT(x)          ((x) & 0x04000000)
 138 /* #define GMT_ ?               ((x) & 0x02000000) */
 139 #define GMT_ONLINE(x)           ((x) & 0x01000000)
 140 #define GMT_D_6250(x)           ((x) & 0x00800000)
 141 #define GMT_D_1600(x)           ((x) & 0x00400000)
 142 #define GMT_D_800(x)            ((x) & 0x00200000)
 143 /* #define GMT_ ?               ((x) & 0x00100000) */
 144 /* #define GMT_ ?               ((x) & 0x00080000) */
 145 #define GMT_DR_OPEN(x)          ((x) & 0x00040000)  /* door open (no tape) */
 146 /* #define GMT_ ?               ((x) & 0x00020000) */
 147 #define GMT_IM_REP_EN(x)        ((x) & 0x00010000)  /* immediate report mode */
 148 /* 16 generic status bits unused */
 149 
 150 /* DDS drives have 'setmarks', sort of like filemarks but used to group
 151  * files, rather than blocks. Not used. Not supported.
 152  * I think DDS drives are DAT drives.
 153  */
 154 
 155 #endif /* _LINUX_MTIO_H */
 156
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