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if_bah_zbus.c revision 1.2 
      1 /*	$NetBSD: if_bah_zbus.c,v 1.2 1998/09/04 21:19:07 is Exp $ */
      2 
      3 /*
      4  * Copyright (c) 1994, 1995, 1998 Ignatios Souvatzis
      5  * 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  * 3. All advertising materials mentioning features or use of this software
     16  *    must display the following acknowledgement:
     17  *      This product includes software developed by Ignatios Souvatzis
     18  *      for the NetBSD Project.
     19  * 4. The name of the author may not be used to endorse or promote products
     20  *    derived from this software without specific prior written permission
     21  *
     22  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
     23  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
     24  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
     25  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
     26  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
     27  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
     28  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
     29  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
     30  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
     31  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
     32  */
     33 
     34 /*
     35  * Driver frontend for the Commodore Busines Machines and the
     36  * Ameristar ARCnet card.
     37  */
     38 
     39 #include <sys/types.h>
     40 #include <sys/param.h>
     41 
     42 #include <sys/conf.h>
     43 #include <sys/device.h>
     44 #include <sys/mbuf.h>
     45 #include <sys/socket.h>
     46 #include <sys/systm.h>
     47 #include <sys/kernel.h>
     48 
     49 #include <machine/bus.h>
     50 #include <machine/cpu.h>
     51 #include <machine/intr.h>
     52 
     53 #include <net/if.h>
     54 #include <net/route.h>
     55 
     56 #include <net/if_arc.h>
     57 
     58 #include <amiga/amiga/device.h>
     59 #include <amiga/dev/zbusvar.h>
     60 
     61 #include <dev/ic/smc90cx6var.h>
     62 
     63 /*
     64  * A2060 software status per interface
     65  */
     66 struct bah_zbus_softc {
     67 	struct	bah_softc	sc_bah;
     68 	struct	bus_space_tag	sc_bst;
     69 	struct	isr		sc_isr;
     70 };
     71 
     72 int	bah_zbus_match __P((struct device *, struct cfdata *, void *));
     73 void	bah_zbus_attach __P((struct device *, struct device *, void *));
     74 void	bah_zbus_reset __P((struct bah_softc *, int));
     75 
     76 struct cfattach bah_zbus_ca = {
     77 	sizeof(struct bah_zbus_softc), bah_zbus_match, bah_zbus_attach
     78 };
     79 
     80 int
     81 bah_zbus_match(parent, cfp, aux)
     82 	struct device *parent;
     83 	struct cfdata *cfp;
     84 	void *aux;
     85 {
     86 	struct zbus_args *zap = aux;
     87 
     88 	if ((zap->manid == 514 || zap->manid == 1053) && zap->prodid == 9)
     89 		return (1);
     90 
     91 	return (0);
     92 }
     93 
     94 void
     95 bah_zbus_attach(parent, self, aux)
     96 	struct device *parent, *self;
     97 	void *aux;
     98 {
     99 	struct bah_zbus_softc *bsc = (void *)self;
    100 	struct bah_softc *sc = &bsc->sc_bah;
    101 	struct zbus_args *zap = aux;
    102 
    103 #if (defined(BAH_DEBUG) && (BAH_DEBUG > 2))
    104 	printf("\n%s: attach(0x%x, 0x%x, 0x%x)\n",
    105 	    sc->sc_dev.dv_xname, parent, self, aux);
    106 #endif
    107 	bsc->sc_bst.base = (bus_addr_t)zap->va;
    108 	bsc->sc_bst.stride = 1;
    109 
    110 	sc->sc_bst_r = &bsc->sc_bst;
    111 	sc->sc_regs = bsc->sc_bst.base + 0x4000;
    112 
    113 	sc->sc_bst_m = &bsc->sc_bst;
    114 	sc->sc_mem = bsc->sc_bst.base + 0x8000;
    115 
    116 	sc->sc_reset = bah_zbus_reset;
    117 
    118 	bah_attach_subr(sc);
    119 
    120 	bsc->sc_isr.isr_intr = bahintr;
    121 	bsc->sc_isr.isr_arg = sc;
    122 	bsc->sc_isr.isr_ipl = 2;
    123 	add_isr(&bsc->sc_isr);
    124 }
    125 
    126 void
    127 bah_zbus_reset(sc, onoff)
    128 	struct bah_softc *sc;
    129 	int onoff;
    130 {
    131 	struct bah_zbus_softc *bsc;
    132 	volatile u_int8_t *p;
    133 
    134 	bsc = (struct bah_zbus_softc *)sc;
    135 
    136 	p = (volatile u_int8_t *)bsc->sc_bst.base;
    137 
    138 	p[0x0000] = 0;	/* A2060 reset flipflop */
    139 	p[0xc000] = 0;	/* A560 reset flipflop */
    140 
    141 	if (!onoff)
    142 		return;
    143 
    144 #ifdef M68060
    145 	/* make sure we flush the store buffer before the delay */
    146 	(void)p[0x8000];
    147 #endif
    148 	DELAY(200);
    149 
    150 	p[0x0000] = 0xff;
    151 	p[0xc000] = 0xff;
    152 
    153 	return;
    154 }
    155