/*	$NetBSD: if_le.c,v 1.28 1996/04/22 02:25:54 christos Exp $	*/

/*-
 * Copyright (c) 1995 Charles M. Hannum.  All rights reserved.
 * Copyright (c) 1992, 1993
 *	The Regents of the University of California.  All rights reserved.
 *
 * This code is derived from software contributed to Berkeley by
 * Ralph Campbell and Rick Macklem.
 *
 * 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_le.c	8.2 (Berkeley) 11/16/93
 */

#include "bpfilter.h"

#include <sys/param.h>
#include <sys/systm.h>
#include <sys/mbuf.h>
#include <sys/syslog.h>
#include <sys/socket.h>
#include <sys/device.h>

#include <net/if.h>

#ifdef INET
#include <netinet/in.h>
#include <netinet/if_ether.h>
#endif

#include <machine/autoconf.h>
#include <machine/cpu.h>
#include <machine/dvma.h>
#include <machine/isr.h>
#include <machine/obio.h>
#include <machine/idprom.h>

#include <sun3/dev/if_lereg.h>
#include <sun3/dev/if_levar.h>
#include <dev/ic/am7990reg.h>
#define	LE_NEED_BUF_CONTIG
#include <dev/ic/am7990var.h>

#define	LE_SOFTC(unit)	le_cd.cd_devs[unit]
#define	LE_DELAY(x)	DELAY(x)

static int	le_match __P((struct device *, void *, void *));
static void	le_attach __P((struct device *, struct device *, void *));
int	leintr __P((void *));

struct cfattach le_ca = {
	sizeof(struct le_softc), le_match, le_attach
};

struct	cfdriver le_cd = {
	NULL, "le", DV_IFNET
};

integrate void
lehwinit(sc)
	struct le_softc *sc;
{
}

integrate void
lewrcsr(sc, port, val)
	struct le_softc *sc;
	u_int16_t port, val;
{
	register struct lereg1 *ler1 = sc->sc_r1;

	ler1->ler1_rap = port;
	ler1->ler1_rdp = val;
}

integrate u_int16_t
lerdcsr(sc, port)
	struct le_softc *sc;
	u_int16_t port;
{
	register struct lereg1 *ler1 = sc->sc_r1;
	u_int16_t val;

	ler1->ler1_rap = port;
	val = ler1->ler1_rdp;
	return (val);
} 

int
le_match(parent, vcf, aux)
	struct device *parent;
	void *vcf, *aux;
{
	struct cfdata *cf = vcf;
	struct confargs *ca = aux;
	int pa, x;

	/*
	 * OBIO match functions may be called for every possible
	 * physical address, so match only our physical address.
	 */
	if ((pa = cf->cf_paddr) == -1) {
		/* Use our default PA. */
		pa = OBIO_AMD_ETHER;
	}
	if (pa != ca->ca_paddr)
		return (0);

	/* The peek returns -1 on bus error. */
	x = bus_peek(ca->ca_bustype, ca->ca_paddr, 1);
	return (x != -1);
}

void
le_attach(parent, self, aux)
	struct device *parent, *self;
	void *aux;
{
	struct le_softc *sc = (void *)self;
	struct cfdata *cf = self->dv_cfdata;
	struct confargs *ca = aux;
	int intpri;

	/* Default interrupt level. */
	if ((intpri = cf->cf_intpri) == -1)
		intpri = 3;
	printf(" level %d", intpri);

	sc->sc_r1 = (struct lereg1 *)
	    obio_alloc(ca->ca_paddr, OBIO_AMD_ETHER_SIZE);

	sc->sc_memsize = 0x4000;	/* 16K */
	sc->sc_mem = dvma_malloc(sc->sc_memsize);
	sc->sc_addr = (u_long)sc->sc_mem & 0xffffff;
	sc->sc_conf3 = LE_C3_BSWP;

	idprom_etheraddr(sc->sc_arpcom.ac_enaddr);

	sc->sc_copytodesc = am7990_copytobuf_contig;
	sc->sc_copyfromdesc = am7990_copyfrombuf_contig;
	sc->sc_copytobuf = am7990_copytobuf_contig;
	sc->sc_copyfrombuf = am7990_copyfrombuf_contig;
	sc->sc_zerobuf = am7990_zerobuf_contig;

	sc->sc_arpcom.ac_if.if_name = le_cd.cd_name;
	leconfig(sc);

	/* Install interrupt handler. */
	isr_add_autovect(leintr, (void *)sc, intpri);
}

/*
 * Compare two Ether/802 addresses for equality, inlined and
 * unrolled for speed.  I'd love to have an inline assembler
 * version of this...   XXX: Who wanted that? mycroft?
 * I wrote one, but the following is just as efficient.
 * This expands to 10 short m68k instructions! -gwr
 * Note: use this like bcmp()
 */
static inline u_short
ether_cmp(one, two)
	u_char *one, *two;
{
	register u_short *a = (u_short *) one;
	register u_short *b = (u_short *) two;
	register u_short diff;

	diff  = *a++ - *b++;
	diff |= *a++ - *b++;
	diff |= *a++ - *b++;

	return (diff);
}

#define	ETHER_CMP ether_cmp

#include <dev/ic/am7990.c>