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Annotation of 43BSDReno/sys/vaxif/if_dmc.h, revision 1.1.1.1

1.1       root        1: /*
                      2:  * Copyright (c) 1982, 1986 Regents of the University of California.
                      3:  * All rights reserved.
                      4:  *
                      5:  * Redistribution is only permitted until one year after the first shipment
                      6:  * of 4.4BSD by the Regents.  Otherwise, redistribution and use in source and
                      7:  * binary forms are permitted provided that: (1) source distributions retain
                      8:  * this entire copyright notice and comment, and (2) distributions including
                      9:  * binaries display the following acknowledgement:  This product includes
                     10:  * software developed by the University of California, Berkeley and its
                     11:  * contributors'' in the documentation or other materials provided with the
                     12:  * distribution and in all advertising materials mentioning features or use
                     13:  * of this software.  Neither the name of the University nor the names of
                     14:  * its contributors may be used to endorse or promote products derived from
                     15:  * this software without specific prior written permission.
                     16:  * THIS SOFTWARE IS PROVIDED AS IS'' AND WITHOUT ANY EXPRESS OR IMPLIED
                     17:  * WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF
                     18:  * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
                     19:  *
                     20:  *     @(#)if_dmc.h    7.5 (Berkeley) 6/28/90
                     21:  */
                     22: 
                     23: /*
                     24:  * DMC-11 Interface
                     25:  */
                     26: 
                     27: struct dmcdevice {
                     28:         char    bsel0;
                     29:        char    bsel1;
                     30:        char    bsel2;
                     31:        char    bsel3;
                     32:        short   sel4;
                     33:        short   sel6;
                     34: };
                     35: 
                     36: /*
                     37:  * dmc software packet encapsulation.  This allows the dmc
                     38:  * link to be multiplexed among several protocols.
                     39:  * The first eight bytes of the dmc header are garbage,
                     40:  * since on a vax the uba has been known to mung these
                     41:  * bytes.  The next two bytes encapsulate packet type.
                     42:  */
                     43: struct dmc_header {
                     44:        char    dmc_buf[8];     /* space for uba on vax */
                     45:        short   dmc_type;       /* encapsulate packet type */
                     46: };
                     47: 
                     48: /* packet types */
                     49: #define        DMC_IPTYPE      1
                     50: #define        DMC_TRAILER     2
                     51: #define        DMC_NTRAILER    16
                     52: 
                     53: /*
                     54:  * DMCMTU includes space for data (1024) + 
                     55:  * protocol header (256) + trailer descriptor (4).
                     56:  * The software link encapsulation header (dmc_header)
                     57:  * is handled separately.
                     58:        #define DMCMTU  1284
                     59:  */
                     60: #define DMCMTU  1500
                     61: 
                     62: #define        RDYSCAN 16      /* loop delay for RDYI after RQI */
                     63: 
                     64: /* defines for bsel0 */
                     65: #define        DMC_BACCI       0
                     66: #define        DMC_CNTLI       1
                     67: #define        DMC_PERR        2
                     68: #define        DMC_BASEI       3
                     69: #define        DMC_WRITE       0               /* transmit block */
                     70: #define        DMC_READ        4               /* read block */
                     71: #define        DMC_RQI         0040            /* port request bit */
                     72: #define        DMC_IEI         0100            /* enable input interrupts */
                     73: #define        DMC_RDYI        0200            /* port ready */
                     74: #define        DMC0BITS        "\10\10RDI\7IEI\6RQI"
                     75: 
                     76: /* defines for bsel1 */
                     77: #define        DMC_MCLR        0100            /* DMC11 Master Clear */
                     78: #define        DMC_RUN         0200            /* clock running */
                     79: #define        DMC1BITS        "\10\10RUN\7MCLR"
                     80: 
                     81: /* defines for bsel2 */
                     82: #define        DMC_BACCO       0
                     83: #define        DMC_CNTLO       1
                     84: #define        DMC_OUX         0               /* transmit block */
                     85: #define        DMC_OUR         4               /* read block */
                     86: #define        DMC_IEO         0100            /* enable output interrupts */
                     87: #define        DMC_RDYO        0200            /* port available */
                     88: #define        DMC2BITS        "\10\10RDO\7IEO"
                     89: 
                     90: /* defines for CNTLI mode */
                     91: #define        DMC_HDPLX       02000           /* half duplex DDCMP operation */
                     92: #define        DMC_SEC         04000           /* half duplex secondary station */
                     93: #define        DMC_MAINT       00400           /* enter maintenance mode */
                     94: 
                     95: /* defines for BACCI/O and BASEI mode */
                     96: #define        DMC_XMEM        0140000         /* xmem bit position */
                     97: #define        DMC_CCOUNT      0037777         /* character count mask */
                     98: #define        DMC_RESUME      0002000         /* resume (BASEI only) */
                     99: 
                    100: /* defines for CNTLO */
                    101: #define        DMC_CNTMASK     01777
                    102: 
                    103: #define        DMC_DATACK      01
                    104: #define        DMC_TIMEOUT     02
                    105: #define        DMC_NOBUFS      04
                    106: #define        DMC_MAINTREC    010
                    107: #define        DMC_LOSTDATA    020
                    108: #define        DMC_DISCONN     0100
                    109: #define        DMC_START       0200
                    110: #define        DMC_NEXMEM      0400
                    111: #define        DMC_ERROR       01000
                    112: 
                    113: #define        DMC_FATAL (DMC_ERROR|DMC_NEXMEM|DMC_START|DMC_LOSTDATA|DMC_MAINTREC)
                    114: #define        CNTLO_BITS      \
                    115:    "\10\12ERROR\11NEXMEM\10START\7DISC\5LSTDATA\4MAINT\3NOBUF\2TIMEO\1DATACK"

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