135 lines
4.3 KiB
C
135 lines
4.3 KiB
C
/* $NetBSD: if_dmcreg.h,v 1.4 2005/12/11 12:23:29 christos Exp $ */
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/*
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* Copyright (c) 1982, 1986 Regents of the University of California.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* @(#)if_dmc.h 7.5 (Berkeley) 6/28/90
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*/
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/*
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* DMC-11 Interface
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*/
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#ifdef notdef
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struct dmcdevice {
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char bsel0;
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char bsel1;
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char bsel2;
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char bsel3;
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short sel4;
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short sel6;
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};
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#endif
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#define DMC_BSEL0 0
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#define DMC_BSEL1 1
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#define DMC_BSEL2 2
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#define DMC_BSEL3 3
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#define DMC_SEL4 4
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#define DMC_SEL6 6
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/*
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* dmc software packet encapsulation. This allows the dmc
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* link to be multiplexed among several protocols.
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* The first eight bytes of the dmc header are garbage,
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* since on a vax the uba has been known to mung these
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* bytes. The next two bytes encapsulate packet type.
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*/
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struct dmc_header {
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char dmc_buf[8]; /* space for uba on vax */
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short dmc_type; /* encapsulate packet type */
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};
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/* packet types */
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#define DMC_IPTYPE 1
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#define DMC_TRAILER 2
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#define DMC_NTRAILER 16
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/*
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* DMCMTU includes space for data (1024) +
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* protocol header (256) + trailer descriptor (4).
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* The software link encapsulation header (dmc_header)
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* is handled separately.
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#define DMCMTU 1284
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*/
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#define DMCMTU 1500
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#define RDYSCAN 16 /* loop delay for RDYI after RQI */
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/* defines for bsel0 */
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#define DMC_BACCI 0
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#define DMC_CNTLI 1
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#define DMC_PERR 2
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#define DMC_BASEI 3
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#define DMC_WRITE 0 /* transmit block */
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#define DMC_READ 4 /* read block */
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#define DMC_RQI 0040 /* port request bit */
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#define DMC_IEI 0100 /* enable input interrupts */
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#define DMC_RDYI 0200 /* port ready */
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#define DMC0BITS "\10\10RDI\7IEI\6RQI"
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/* defines for bsel1 */
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#define DMC_MCLR 0100 /* DMC11 Master Clear */
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#define DMC_RUN 0200 /* clock running */
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#define DMC1BITS "\10\10RUN\7MCLR"
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/* defines for bsel2 */
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#define DMC_BACCO 0
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#define DMC_CNTLO 1
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#define DMC_OUX 0 /* transmit block */
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#define DMC_OUR 4 /* read block */
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#define DMC_IEO 0100 /* enable output interrupts */
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#define DMC_RDYO 0200 /* port available */
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#define DMC2BITS "\10\10RDO\7IEO"
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/* defines for CNTLI mode */
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#define DMC_HDPLX 02000 /* half duplex DDCMP operation */
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#define DMC_SEC 04000 /* half duplex secondary station */
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#define DMC_MAINT 00400 /* enter maintenance mode */
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/* defines for BACCI/O and BASEI mode */
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#define DMC_XMEM 0140000 /* xmem bit position */
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#define DMC_CCOUNT 0037777 /* character count mask */
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#define DMC_RESUME 0002000 /* resume (BASEI only) */
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/* defines for CNTLO */
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#define DMC_CNTMASK 01777
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#define DMC_DATACK 01
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#define DMC_TIMEOUT 02
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#define DMC_NOBUFS 04
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#define DMC_MAINTREC 010
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#define DMC_LOSTDATA 020
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#define DMC_DISCONN 0100
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#define DMC_START 0200
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#define DMC_NEXMEM 0400
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#define DMC_ERROR 01000
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#define DMC_FATAL (DMC_ERROR|DMC_NEXMEM|DMC_START|DMC_LOSTDATA|DMC_MAINTREC)
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#define CNTLO_BITS \
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"\10\12ERROR\11NEXMEM\10START\7DISC\5LSTDATA\4MAINT\3NOBUF\2TIMEO\1DATACK"
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