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if_le.c revision 1.3 
      1 /*	$NetBSD: if_le.c,v 1.3 2002/10/02 05:06:54 thorpej Exp $	*/
      2 
      3 /*
      4  * Copyright (c) 1997, 1999
      5  *	Matthias Drochner.  All rights reserved.
      6  *
      7  * Redistribution and use in source and binary forms, with or without
      8  * modification, are permitted provided that the following conditions
      9  * are met:
     10  * 1. Redistributions of source code must retain the above copyright
     11  *    notice, this list of conditions and the following disclaimer.
     12  * 2. Redistributions in binary form must reproduce the above copyright
     13  *    notice, this list of conditions and the following disclaimer in the
     14  *    documentation and/or other materials provided with the distribution.
     15  *
     16  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
     17  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
     18  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
     19  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
     20  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
     21  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
     22  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
     23  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
     24  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
     25  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
     26  *
     27  */
     28 
     29 #include "opt_inet.h"
     30 
     31 #include <sys/param.h>
     32 #include <sys/systm.h>
     33 #include <sys/socket.h>
     34 #include <sys/device.h>
     35 
     36 #include <net/if.h>
     37 #include <net/if_ether.h>
     38 #include <net/if_media.h>
     39 
     40 #ifdef INET
     41 #include <netinet/in.h>
     42 #include <netinet/if_inarp.h>
     43 #endif
     44 
     45 #include <machine/cpu.h>
     46 #include <machine/pte.h>
     47 
     48 #include <machine/autoconf.h>
     49 
     50 #include <dev/ic/lancereg.h>
     51 #include <dev/ic/lancevar.h>
     52 #include <dev/ic/am79900reg.h>
     53 #include <dev/ic/am79900var.h>
     54 
     55 #include <cesfic/cesfic/isr.h>
     56 
     57 int lematch __P((struct device *, struct cfdata *, void *));
     58 void leattach __P((struct device *, struct device *, void *));
     59 
     60 CFATTACH_DECL(le, sizeof(struct am79900_softc),
     61     lematch, leattach, NULL, NULL);
     62 
     63 int	leintr __P((void *));
     64 
     65 void lewrcsr __P((struct lance_softc *, u_int16_t, u_int16_t));
     66 u_int16_t lerdcsr __P((struct lance_softc *, u_int16_t));
     67 
     68 static char *lebase, *lemembase;
     69 
     70 void
     71 lewrcsr(sc, port, val)
     72 	struct lance_softc *sc;
     73 	u_int16_t port, val;
     74 {
     75 	*(volatile int *)(lebase + 4) = port;
     76 	*(volatile int *)(lebase + 0) = val;
     77 }
     78 
     79 u_int16_t
     80 lerdcsr(sc, port)
     81 	struct lance_softc *sc;
     82 	u_int16_t port;
     83 {
     84 	u_int16_t val;
     85 
     86 	*(volatile int *)(lebase + 4) = port;
     87 	val = *(volatile int *)(lebase + 0);
     88 	return (val);
     89 }
     90 
     91 int
     92 lematch(parent, match, aux)
     93 	struct device *parent;
     94 	struct cfdata *match;
     95 	void *aux;
     96 {
     97 	return (1);
     98 }
     99 
    100 /*
    101  * Interface exists: make available by filling in network interface
    102  * record.  System will initialize the interface when it is ready
    103  * to accept packets.
    104  */
    105 extern void sic_enable_int __P((int, int, int, int, int));
    106 static char hwa[6] = {0x00,0x80,0xa2,0x00,0x30,0x23};
    107 void
    108 leattach(parent, self, aux)
    109 	struct device *parent, *self;
    110 	void *aux;
    111 {
    112 	int i;
    113 	struct lance_softc *sc = (struct lance_softc *)self;
    114 
    115 	mainbus_map(0x4c000000, 0x10000, 0, (void **)&lemembase);
    116 	mainbus_map(0x48000000, 0x1000, 0, (void **)&lebase);
    117 
    118 	sc->sc_mem = lemembase;
    119 	sc->sc_conf3 = LE_C3_BSWP;
    120 	sc->sc_addr = 0x4c000000;
    121 	sc->sc_memsize = 64 * 1024;
    122 
    123 	if (cesfic_getetheraddr(sc->sc_enaddr)) {
    124 		/* fallback */
    125 		for (i = 0; i < sizeof(sc->sc_enaddr); i++) {
    126 			sc->sc_enaddr[i] = hwa[i];
    127 		}
    128 	}
    129 
    130 	sc->sc_copytodesc = lance_copytobuf_contig;
    131 	sc->sc_copyfromdesc = lance_copyfrombuf_contig;
    132 	sc->sc_copytobuf = lance_copytobuf_contig;
    133 	sc->sc_copyfrombuf = lance_copyfrombuf_contig;
    134 	sc->sc_zerobuf = lance_zerobuf_contig;
    135 
    136 	sc->sc_rdcsr = lerdcsr;
    137 	sc->sc_wrcsr = lewrcsr;
    138 	sc->sc_hwinit = NULL;
    139 
    140 	lewrcsr(sc, 4, 0x44);
    141 	am79900_config((struct am79900_softc *)sc);
    142 
    143 	/* Establish the interrupt handler. */
    144 	(void) isrlink(leintr, sc, 3, ISRPRI_NET);
    145 	sic_enable_int(17, 0, 1, 3, 0);
    146 }
    147 
    148 int
    149 leintr(arg)
    150 	void *arg;
    151 {
    152 	struct lance_softc *sc = arg;
    153 	u_int16_t isr4;
    154 
    155 	isr4 = lerdcsr(sc, 4);
    156 	if (isr4 & 0x08) {
    157 		lewrcsr(sc, 4, isr4);
    158 		return (1);
    159 	}
    160 
    161 	return (am79900_intr(sc));
    162 }
    163