1 /* $NetBSD: if_dmcreg.h,v 1.4 2005/12/11 12:23:29 christos 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" 135