usr/src/sys/vax/if/if_accreg.h

/*
 * 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. All advertising materials mentioning features or use of this software
 *    must display the following acknowledgement:
 *      This product includes software developed by the University of
 *      California, Berkeley and its contributors.
 * 4. 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_accreg.h 7.3 (Berkeley) 6/28/90
 */

/*
 * ACC LH/DH-11 interface
 */

struct accdma {
        short   csr;    /* control and status */
        short   db;     /* data buffer */
        u_short ba;     /* buss address */
        short   wc;     /* word count */
};

struct accdevice {
        struct  accdma input;
        struct  accdma output;
};

#define icsr    input.csr
#define iba     input.ba
#define iwc     input.wc
#define ocsr    output.csr
#define oba     output.ba
#define owc     output.wc

/*
 * Bits Common to both input and out CSR's
 */
#define ACC_ERR         0x8000          /* error present */
#define ACC_NXM         0x4000          /* non-existant memory */
#define ACC_RDY         0x0080          /* ready */
#define ACC_IE          0x0040          /* interrupt enable */
#define ACC_RESET       0x0002          /* reset interface */
#define ACC_GO          0x0001          /* start operation */

/*
 * Input Control Status Register
 */
#define IN_EOM          0x2000          /* end-of-message recieved */
#define IN_HRDY         0x0800          /* host ready */
#define IN_IMPBSY       0x0400          /* IMP not ready */
#define IN_RMR          0x0200          /* receive master ready error */
#define IN_IBF          0x0100          /* input data buffer full */
#define IN_WEN          0x0008          /* write enable */
#define IN_MRDY         0x0004          /* master ready */

#define ACC_INBITS \
"\20\20ERR\17NXM\16EOM\14HRDY\13IMPBSY\12RMR\11IBF\10RDY\7IE\
\4WEN\3MRDY\2RESET\1GO"

/*
 * Output Control Status Register
 */
#define OUT_TMR         0x0200          /* transmit master ready error */
#define OUT_BBACK       0x0008          /* bus back */
#define OUT_ENLB        0x0004          /* enable last bit */

#define ACC_OUTBITS \
"\20\20ERR\17NXM\12TMR\10RDY\7IE\4BBACK\3ENLB\2RESET\1GO"