Net2/usr/src/sys/vax/if/if_ecreg.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_ecreg.h	7.4 (Berkeley) 6/28/90
 */

/*
 * 3Com Ethernet controller registers.
 */
struct ecdevice {
	short	ec_rcr;		/* Receive Control Register */
	short	ec_xcr;		/* Transmit Control Register */
};

/*
 * Control and status bits -- rcr
 */
#define	EC_SPIE		0x8000		/* set parity interrupt enable */
#define	EC_ASTEP	0x4000		/* increment address counter */
#define	EC_AROM		0x2000		/* 1: Use address ROM, 0: use RAM */
#define	EC_PE		0x2000		/* Parity error */
#define	EC_AWCLK	0x1000		/* address write clock bit */
#define	EC_PIE		0x1000		/* Parity interrupt enable (read) */
#define	EC_ADATA	0x0f00		/* address/filtering */
#define	EC_RDONE	0x0080		/* receive done */
#define	EC_MDISAB	0x0080		/* memory disable */
#define	EC_RINTEN	0x0040		/* receive interrupt enable */
#define	EC_RCLR		0x0020		/* clear RDONE bit */
#define	EC_RWBN		0x0010		/* submit buffer for receive */
#define	EC_RBN		0x000f		/* buffer number */

#define	EC_RBITS	"\10\16PE\15PIE\10RDONE\7RINTEN"

/*
 * Control and status bits -- xcr
 */
#define	EC_JAM		0x8000		/* collision dectected */
#define	EC_JINTEN	0x4000		/* collision interrupt enable */
#define	EC_JCLR		0x2000		/* clear collision detect */
#define	EC_UECLR	0x0100		/* reset controller */
#define	EC_XDONE	0x0080		/* transmit done */
#define	EC_XINTEN	0x0040		/* transmit interrupt enable */
#define	EC_XCLR		0x0020		/* clear XDONE bit */
#define	EC_XWBN		0x0010		/* submit buffer for transmit */
#define	EC_XBN		0x000f		/* buffer number */

#define	EC_XBITS	"\10\20JAM\17JINTEN\10XDONE\7XINTEN"

/*
 * Useful combinations
 */
#define	EC_READ		(0x600|EC_RINTEN|EC_RWBN)
#define	EC_MULTI	(0x700|EC_RINTEN|EC_RWBN)
#define EC_PROMISC	(0x000|EC_RINTEN|EC_RWBN)
#define	EC_WRITE	(EC_JINTEN|EC_XINTEN|EC_XWBN)
#define	EC_CLEAR	(EC_JINTEN|EC_XINTEN|EC_JCLR)

/*
 * Buffer number definitions
 */
#define	ECTBF		0		/* Buffer for transmit */
#define	ECRLBF		1		/* First buffer for receive */
#define	ECRHBF		15		/* Last buffer for receive */

#define	ECRDOFF		528		/* Packet offset in read buffer */