FreeBSD/Linux Kernel Cross Reference
sys/dev/qbus/if_dmcreg.h

     /*      $NetBSD: if_dmcreg.h,v 1.2 2003/08/07 16:31:14 agc Exp $        */
     /*
      * Copyright (c) 1982, 1986 Regents of the University of California.
      * All rights reserved.
      *
      * Redistribution and use in source and binary forms, with or without
      * modification, are permitted provided that the following conditions
      * are met:
      * 1. Redistributions of source code must retain the above copyright
     *    notice, this list of conditions and the following disclaimer.
     * 2. Redistributions in binary form must reproduce the above copyright
     *    notice, this list of conditions and the following disclaimer in the
     *    documentation and/or other materials provided with the distribution.
     * 3. Neither the name of the University nor the names of its contributors
     *    may be used to endorse or promote products derived from this software
     *    without specific prior written permission.
     *
     * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
     * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
     * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
     * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
     * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
     * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
     * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
     * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
     * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
     * SUCH DAMAGE.
     *
     *      @(#)if_dmc.h    7.5 (Berkeley) 6/28/90
     */
    
    /*
     * DMC-11 Interface
     */
    
    #ifdef notdef
    struct dmcdevice {
            char    bsel0;
            char    bsel1;
            char    bsel2;
            char    bsel3;
            short   sel4;
            short   sel6;
    };
    #endif
    
    #define DMC_BSEL0       0
    #define DMC_BSEL1       1
    #define DMC_BSEL2       2
    #define DMC_BSEL3       3
    #define DMC_SEL4        4
    #define DMC_SEL6        6
    
    /*
     * dmc software packet encapsulation.  This allows the dmc
     * link to be multiplexed among several protocols.
     * The first eight bytes of the dmc header are garbage,
     * since on a vax the uba has been known to mung these
     * bytes.  The next two bytes encapsulate packet type.
     */
    struct dmc_header {
            char    dmc_buf[8];     /* space for uba on vax */
            short   dmc_type;       /* encapsulate packet type */
    };
    
    /* packet types */
    #define DMC_IPTYPE      1
    #define DMC_TRAILER     2
    #define DMC_NTRAILER    16
    
    /*
     * DMCMTU includes space for data (1024) + 
     * protocol header (256) + trailer descriptor (4).
     * The software link encapsulation header (dmc_header)
     * is handled separately.
            #define DMCMTU  1284
     */
    #define DMCMTU  1500
    
    #define RDYSCAN 16      /* loop delay for RDYI after RQI */
    
    /* defines for bsel0 */
    #define DMC_BACCI       0
    #define DMC_CNTLI       1
    #define DMC_PERR        2
    #define DMC_BASEI       3
    #define DMC_WRITE       0               /* transmit block */
    #define DMC_READ        4               /* read block */
    #define DMC_RQI         0040            /* port request bit */
    #define DMC_IEI         0100            /* enable input interrupts */
    #define DMC_RDYI        0200            /* port ready */
    #define DMC0BITS        "\1\10RDI\7IEI\6RQI"
    
    /* defines for bsel1 */
    #define DMC_MCLR        0100            /* DMC11 Master Clear */
    #define DMC_RUN         0200            /* clock running */
    #define DMC1BITS        "\1\10RUN\7MCLR"
    
   /* defines for bsel2 */
   #define DMC_BACCO       0
   #define DMC_CNTLO       1
   #define DMC_OUX         0               /* transmit block */
   #define DMC_OUR         4               /* read block */
   #define DMC_IEO         0100            /* enable output interrupts */
   #define DMC_RDYO        0200            /* port available */
   #define DMC2BITS        "\1\10RDO\7IEO"
   
   /* defines for CNTLI mode */
   #define DMC_HDPLX       02000           /* half duplex DDCMP operation */
   #define DMC_SEC         04000           /* half duplex secondary station */
   #define DMC_MAINT       00400           /* enter maintenance mode */
   
   /* defines for BACCI/O and BASEI mode */
   #define DMC_XMEM        0140000         /* xmem bit position */
   #define DMC_CCOUNT      0037777         /* character count mask */
   #define DMC_RESUME      0002000         /* resume (BASEI only) */
   
   /* defines for CNTLO */
   #define DMC_CNTMASK     01777
   
   #define DMC_DATACK      01
   #define DMC_TIMEOUT     02
   #define DMC_NOBUFS      04
   #define DMC_MAINTREC    010
   #define DMC_LOSTDATA    020
   #define DMC_DISCONN     0100
   #define DMC_START       0200
   #define DMC_NEXMEM      0400
   #define DMC_ERROR       01000
   
   #define DMC_FATAL (DMC_ERROR|DMC_NEXMEM|DMC_START|DMC_LOSTDATA|DMC_MAINTREC)
   #define CNTLO_BITS      \
      "\1\12ERROR\11NEXMEM\10START\7DISC\5LSTDATA\4MAINT\3NOBUF\2TIMEO\1DATACK"

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