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Annotation of Net2/sys/mtio.h, revision 1.1

1.1     ! root        1: /*
        !             2:  * Copyright (c) 1982, 1986 The Regents of the University of California.
        !             3:  * 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. All advertising materials mentioning features or use of this software
        !            14:  *    must display the following acknowledgement:
        !            15:  *     This product includes software developed by the University of
        !            16:  *     California, Berkeley and its contributors.
        !            17:  * 4. Neither the name of the University nor the names of its contributors
        !            18:  *    may be used to endorse or promote products derived from this software
        !            19:  *    without specific prior written permission.
        !            20:  *
        !            21:  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
        !            22:  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
        !            23:  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
        !            24:  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
        !            25:  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
        !            26:  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
        !            27:  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
        !            28:  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
        !            29:  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
        !            30:  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
        !            31:  * SUCH DAMAGE.
        !            32:  *
        !            33:  *     @(#)mtio.h      7.6 (Berkeley) 2/5/91
        !            34:  */
        !            35: 
        !            36: /*
        !            37:  * Structures and definitions for mag tape io control commands
        !            38:  */
        !            39: 
        !            40: /* structure for MTIOCTOP - mag tape op command */
        !            41: struct mtop {
        !            42:        short   mt_op;          /* operations defined below */
        !            43:        daddr_t mt_count;       /* how many of them */
        !            44: };
        !            45: 
        !            46: /* operations */
        !            47: #define MTWEOF         0       /* write an end-of-file record */
        !            48: #define MTFSF          1       /* forward space file */
        !            49: #define MTBSF          2       /* backward space file */
        !            50: #define MTFSR          3       /* forward space record */
        !            51: #define MTBSR          4       /* backward space record */
        !            52: #define MTREW          5       /* rewind */
        !            53: #define MTOFFL         6       /* rewind and put the drive offline */
        !            54: #define MTNOP          7       /* no operation, sets status only */
        !            55: #define MTCACHE                8       /* enable controller cache */
        !            56: #define MTNOCACHE      9       /* disable controller cache */
        !            57: 
        !            58: /* structure for MTIOCGET - mag tape get status command */
        !            59: 
        !            60: struct mtget {
        !            61:        short   mt_type;        /* type of magtape device */
        !            62: /* the following two registers are grossly device dependent */
        !            63:        short   mt_dsreg;       /* ``drive status'' register */
        !            64:        short   mt_erreg;       /* ``error'' register */
        !            65: /* end device-dependent registers */
        !            66:        short   mt_resid;       /* residual count */
        !            67: /* the following two are not yet implemented */
        !            68:        daddr_t mt_fileno;      /* file number of current position */
        !            69:        daddr_t mt_blkno;       /* block number of current position */
        !            70: /* end not yet implemented */
        !            71: };
        !            72: 
        !            73: /*
        !            74:  * Constants for mt_type byte.  These are the same
        !            75:  * for controllers compatible with the types listed.
        !            76:  */
        !            77: #define        MT_ISTS         0x01            /* TS-11 */
        !            78: #define        MT_ISHT         0x02            /* TM03 Massbus: TE16, TU45, TU77 */
        !            79: #define        MT_ISTM         0x03            /* TM11/TE10 Unibus */
        !            80: #define        MT_ISMT         0x04            /* TM78/TU78 Massbus */
        !            81: #define        MT_ISUT         0x05            /* SI TU-45 emulation on Unibus */
        !            82: #define        MT_ISCPC        0x06            /* SUN */
        !            83: #define        MT_ISAR         0x07            /* SUN */
        !            84: #define        MT_ISTMSCP      0x08            /* DEC TMSCP protocol (TU81, TK50) */
        !            85: #define MT_ISCY                0x09            /* CCI Cipher */
        !            86: #define MT_ISCT                0x0a            /* HP 1/4 tape */
        !            87: #define MT_ISFHP       0x0b            /* HP 7980 1/2 tape */
        !            88: #define MT_ISEXABYTE   0x0c            /* Exabyte */
        !            89: #define MT_ISEXA8200   0x0c            /* Exabyte EXB-8200 */
        !            90: #define MT_ISEXA8500   0x0d            /* Exabyte EXB-8500 */
        !            91: #define MT_ISVIPER1    0x0e            /* Archive Viper-150 */
        !            92: #define MT_ISPYTHON    0x0f            /* Archive Python (DAT) */
        !            93: #define MT_ISHPDAT     0x10            /* HP 35450A DAT drive */
        !            94: 
        !            95: /* mag tape io control commands */
        !            96: #define        MTIOCTOP        _IOW('m', 1, struct mtop)       /* do a mag tape op */
        !            97: #define        MTIOCGET        _IOR('m', 2, struct mtget)      /* get tape status */
        !            98: #define MTIOCIEOT      _IO('m', 3)                     /* ignore EOT error */
        !            99: #define MTIOCEEOT      _IO('m', 4)                     /* enable EOT error */
        !           100: 
        !           101: #ifndef KERNEL
        !           102: #define        DEFTAPE "/dev/rmt12"
        !           103: #endif
        !           104: 
        !           105: #ifdef KERNEL
        !           106: /*
        !           107:  * minor device number
        !           108:  */
        !           109: 
        !           110: #define        T_UNIT          003             /* unit selection */
        !           111: #define        T_NOREWIND      004             /* no rewind on close */
        !           112: #define        T_DENSEL        030             /* density select */
        !           113: #define        T_800BPI        000             /* select  800 bpi */
        !           114: #define        T_1600BPI       010             /* select 1600 bpi */
        !           115: #define        T_6250BPI       020             /* select 6250 bpi */
        !           116: #define        T_BADBPI        030             /* undefined selection */
        !           117: #endif

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