sys/dev/qbus/if_dmcreg.h

   1 /*      $NetBSD: if_dmcreg.h,v 1.1.24.4 2005/03/04 16:49:52 skrll Exp $ */
   2 /*
   3  * Copyright (c) 1982, 1986 Regents of the University of California.
   4  * All rights reserved.
   5  *
   6  * Redistribution and use in source and binary forms, with or without
   7  * modification, are permitted provided that the following conditions
   8  * are met:
   9  * 1. Redistributions of source code must retain the above copyright
  10  *    notice, this list of conditions and the following disclaimer.
  11  * 2. Redistributions in binary form must reproduce the above copyright
  12  *    notice, this list of conditions and the following disclaimer in the
  13  *    documentation and/or other materials provided with the distribution.
  14  * 3. Neither the name of the University nor the names of its contributors
  15  *    may be used to endorse or promote products derived from this software
  16  *    without specific prior written permission.
  17  *
  18  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  19  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  20  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  21  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  22  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  23  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  24  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  25  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  26  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  27  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  28  * SUCH DAMAGE.
  29  *
  30  *      @(#)if_dmc.h    7.5 (Berkeley) 6/28/90
  31  */
  32
  33 /*
  34  * DMC-11 Interface
  35  */
  36
  37 #ifdef notdef
  38 struct dmcdevice {
  39         char    bsel0;
  40         char    bsel1;
  41         char    bsel2;
  42         char    bsel3;
  43         short   sel4;
  44         short   sel6;
  45 };
  46 #endif
  47
  48 #define DMC_BSEL0       0
  49 #define DMC_BSEL1       1
  50 #define DMC_BSEL2       2
  51 #define DMC_BSEL3       3
  52 #define DMC_SEL4        4
  53 #define DMC_SEL6        6
  54
  55 /*
  56  * dmc software packet encapsulation.  This allows the dmc
  57  * link to be multiplexed among several protocols.
  58  * The first eight bytes of the dmc header are garbage,
  59  * since on a vax the uba has been known to mung these
  60  * bytes.  The next two bytes encapsulate packet type.
  61  */
  62 struct dmc_header {
  63         char    dmc_buf[8];     /* space for uba on vax */
  64         short   dmc_type;       /* encapsulate packet type */
  65 };
  66
  67 /* packet types */
  68 #define DMC_IPTYPE      1
  69 #define DMC_TRAILER     2
  70 #define DMC_NTRAILER    16
  71
  72 /*
  73  * DMCMTU includes space for data (1024) +
  74  * protocol header (256) + trailer descriptor (4).
  75  * The software link encapsulation header (dmc_header)
  76  * is handled separately.
  77         #define DMCMTU  1284
  78  */
  79 #define DMCMTU  1500
  80
  81 #define RDYSCAN 16      /* loop delay for RDYI after RQI */
  82
  83 /* defines for bsel0 */
  84 #define DMC_BACCI       0
  85 #define DMC_CNTLI       1
  86 #define DMC_PERR        2
  87 #define DMC_BASEI       3
  88 #define DMC_WRITE       0               /* transmit block */
  89 #define DMC_READ        4               /* read block */
  90 #define DMC_RQI         0040            /* port request bit */
  91 #define DMC_IEI         0100            /* enable input interrupts */
  92 #define DMC_RDYI        0200            /* port ready */
  93 #define DMC0BITS        "\10\10RDI\7IEI\6RQI"
  94
  95 /* defines for bsel1 */
  96 #define DMC_MCLR        0100            /* DMC11 Master Clear */
  97 #define DMC_RUN         0200            /* clock running */
  98 #define DMC1BITS        "\10\10RUN\7MCLR"
  99
 100 /* defines for bsel2 */
 101 #define DMC_BACCO       0
 102 #define DMC_CNTLO       1
 103 #define DMC_OUX         0               /* transmit block */
 104 #define DMC_OUR         4               /* read block */
 105 #define DMC_IEO         0100            /* enable output interrupts */
 106 #define DMC_RDYO        0200            /* port available */
 107 #define DMC2BITS        "\10\10RDO\7IEO"
 108
 109 /* defines for CNTLI mode */
 110 #define DMC_HDPLX       02000           /* half duplex DDCMP operation */
 111 #define DMC_SEC         04000           /* half duplex secondary station */
 112 #define DMC_MAINT       00400           /* enter maintenance mode */
 113
 114 /* defines for BACCI/O and BASEI mode */
 115 #define DMC_XMEM        0140000         /* xmem bit position */
 116 #define DMC_CCOUNT      0037777         /* character count mask */
 117 #define DMC_RESUME      0002000         /* resume (BASEI only) */
 118
 119 /* defines for CNTLO */
 120 #define DMC_CNTMASK     01777
 121
 122 #define DMC_DATACK      01
 123 #define DMC_TIMEOUT     02
 124 #define DMC_NOBUFS      04
 125 #define DMC_MAINTREC    010
 126 #define DMC_LOSTDATA    020
 127 #define DMC_DISCONN     0100
 128 #define DMC_START       0200
 129 #define DMC_NEXMEM      0400
 130 #define DMC_ERROR       01000
 131
 132 #define DMC_FATAL (DMC_ERROR|DMC_NEXMEM|DMC_START|DMC_LOSTDATA|DMC_MAINTREC)
 133 #define CNTLO_BITS      \
 134    "\10\12ERROR\11NEXMEM\10START\7DISC\5LSTDATA\4MAINT\3NOBUF\2TIMEO\1DATACK"