/* $NetBSD: if_dmcreg.h,v 1.4 2005/12/11 12:23:29 christos 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 "\10\10RDI\7IEI\6RQI"
/* defines for bsel1 */
#define DMC_MCLR 0100 /* DMC11 Master Clear */
#define DMC_RUN 0200 /* clock running */
#define DMC1BITS "\10\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 "\10\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 \
"\10\12ERROR\11NEXMEM\10START\7DISC\5LSTDATA\4MAINT\3NOBUF\2TIMEO\1DATACK"