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if_bah_zbus.c revision 1.10 
      1 /*	$NetBSD: if_bah_zbus.c,v 1.10 2002/10/02 04:55:51 thorpej Exp $ */
      2 
      3 /*-
      4  * Copyright (c) 1994, 1995, 1998 The NetBSD Foundation, Inc.
      5  * All rights reserved.
      6  *
      7  * This code is derived from software contributed to The NetBSD Foundation
      8  * by Ignatios Souvatzis.
      9  *
     10  * Redistribution and use in source and binary forms, with or without
     11  * modification, are permitted provided that the following conditions
     12  * are met:
     13  * 1. Redistributions of source code must retain the above copyright
     14  *    notice, this list of conditions and the following disclaimer.
     15  * 2. Redistributions in binary form must reproduce the above copyright
     16  *    notice, this list of conditions and the following disclaimer in the
     17  *    documentation and/or other materials provided with the distribution.
     18  * 3. All advertising materials mentioning features or use of this software
     19  *    must display the following acknowledgement:
     20  *        This product includes software developed by the NetBSD
     21  *        Foundation, Inc. and its contributors.
     22  * 4. Neither the name of The NetBSD Foundation nor the names of its
     23  *    contributors may be used to endorse or promote products derived
     24  *    from this software without specific prior written permission.
     25  *
     26  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
     27  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
     28  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
     29  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
     30  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
     31  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
     32  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
     33  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
     34  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
     35  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
     36  * POSSIBILITY OF SUCH DAMAGE.
     37  */
     38 
     39 #include <sys/cdefs.h>
     40 __KERNEL_RCSID(0, "$NetBSD: if_bah_zbus.c,v 1.10 2002/10/02 04:55:51 thorpej Exp $");
     41 
     42 /*
     43  * Driver frontend for the Commodore Busines Machines and the
     44  * Ameristar ARCnet card.
     45  */
     46 
     47 #include <sys/types.h>
     48 #include <sys/param.h>
     49 
     50 #include <sys/conf.h>
     51 #include <sys/device.h>
     52 #include <sys/mbuf.h>
     53 #include <sys/socket.h>
     54 #include <sys/systm.h>
     55 #include <sys/kernel.h>
     56 
     57 #include <machine/bus.h>
     58 #include <machine/cpu.h>
     59 #include <machine/intr.h>
     60 
     61 #include <net/if.h>
     62 #include <net/route.h>
     63 
     64 #include <net/if_arc.h>
     65 
     66 #include <amiga/amiga/device.h>
     67 #include <amiga/dev/zbusvar.h>
     68 
     69 #include <dev/ic/smc90cx6var.h>
     70 
     71 /*
     72  * A2060 software status per interface
     73  */
     74 struct bah_zbus_softc {
     75 	struct	bah_softc	sc_bah;
     76 	struct	bus_space_tag	sc_bst;
     77 	struct	isr		sc_isr;
     78 };
     79 
     80 int	bah_zbus_match(struct device *, struct cfdata *, void *);
     81 void	bah_zbus_attach(struct device *, struct device *, void *);
     82 void	bah_zbus_reset(struct bah_softc *, int);
     83 
     84 CFATTACH_DECL(bah_zbus, sizeof(struct bah_zbus_softc),
     85     bah_zbus_match, bah_zbus_attach, NULL, NULL);
     86 
     87 int
     88 bah_zbus_match(struct device *parent, struct cfdata *cfp, void *aux)
     89 {
     90 	struct zbus_args *zap = aux;
     91 
     92 	if ((zap->manid == 514 || zap->manid == 1053) && zap->prodid == 9)
     93 		return (1);
     94 
     95 	return (0);
     96 }
     97 
     98 void
     99 bah_zbus_attach(struct device *parent, struct device *self, void *aux)
    100 {
    101 	struct bah_zbus_softc *bsc = (void *)self;
    102 	struct bah_softc *sc = &bsc->sc_bah;
    103 	struct zbus_args *zap = aux;
    104 
    105 #if (defined(BAH_DEBUG) && (BAH_DEBUG > 2))
    106 	printf("\n%s: attach(0x%x, 0x%x, 0x%x)\n",
    107 	    sc->sc_dev.dv_xname, parent, self, aux);
    108 #endif
    109 	bsc->sc_bst.base = (bus_addr_t)zap->va;
    110 	bsc->sc_bst.absm = &amiga_bus_stride_2;
    111 
    112 	sc->sc_bst_r = &bsc->sc_bst;
    113 	sc->sc_regs = bsc->sc_bst.base + 0x4000;
    114 
    115 	sc->sc_bst_m = &bsc->sc_bst;
    116 	sc->sc_mem = bsc->sc_bst.base + 0x8000;
    117 
    118 	sc->sc_reset = bah_zbus_reset;
    119 
    120 	bah_attach_subr(sc);
    121 
    122 	bsc->sc_isr.isr_intr = bahintr;
    123 	bsc->sc_isr.isr_arg = sc;
    124 	bsc->sc_isr.isr_ipl = 2;
    125 	add_isr(&bsc->sc_isr);
    126 }
    127 
    128 void
    129 bah_zbus_reset(struct bah_softc *sc, 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