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if_bah_zbus.c revision 1.10.108.1 
      1 /*	$NetBSD: if_bah_zbus.c,v 1.10.108.1 2008/06/02 13:21:50 mjf 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  *
     19  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
     20  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
     21  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
     22  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
     23  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
     24  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
     25  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
     26  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
     27  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
     28  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
     29  * POSSIBILITY OF SUCH DAMAGE.
     30  */
     31 
     32 #include <sys/cdefs.h>
     33 __KERNEL_RCSID(0, "$NetBSD: if_bah_zbus.c,v 1.10.108.1 2008/06/02 13:21:50 mjf Exp $");
     34 
     35 /*
     36  * Driver frontend for the Commodore Busines Machines and the
     37  * Ameristar ARCnet card.
     38  */
     39 
     40 #include <sys/types.h>
     41 #include <sys/param.h>
     42 
     43 #include <sys/conf.h>
     44 #include <sys/device.h>
     45 #include <sys/mbuf.h>
     46 #include <sys/socket.h>
     47 #include <sys/systm.h>
     48 #include <sys/kernel.h>
     49 
     50 #include <machine/bus.h>
     51 #include <machine/cpu.h>
     52 #include <machine/intr.h>
     53 
     54 #include <net/if.h>
     55 #include <net/route.h>
     56 
     57 #include <net/if_arc.h>
     58 
     59 #include <amiga/amiga/device.h>
     60 #include <amiga/dev/zbusvar.h>
     61 
     62 #include <dev/ic/smc90cx6var.h>
     63 
     64 /*
     65  * A2060 software status per interface
     66  */
     67 struct bah_zbus_softc {
     68 	struct	bah_softc	sc_bah;
     69 	struct	bus_space_tag	sc_bst;
     70 	struct	isr		sc_isr;
     71 };
     72 
     73 int	bah_zbus_match(struct device *, struct cfdata *, void *);
     74 void	bah_zbus_attach(struct device *, struct device *, void *);
     75 void	bah_zbus_reset(struct bah_softc *, int);
     76 
     77 CFATTACH_DECL(bah_zbus, sizeof(struct bah_zbus_softc),
     78     bah_zbus_match, bah_zbus_attach, NULL, NULL);
     79 
     80 int
     81 bah_zbus_match(struct device *parent, struct cfdata *cfp, void *aux)
     82 {
     83 	struct zbus_args *zap = aux;
     84 
     85 	if ((zap->manid == 514 || zap->manid == 1053) && zap->prodid == 9)
     86 		return (1);
     87 
     88 	return (0);
     89 }
     90 
     91 void
     92 bah_zbus_attach(struct device *parent, struct device *self, void *aux)
     93 {
     94 	struct bah_zbus_softc *bsc = (void *)self;
     95 	struct bah_softc *sc = &bsc->sc_bah;
     96 	struct zbus_args *zap = aux;
     97 
     98 #if (defined(BAH_DEBUG) && (BAH_DEBUG > 2))
     99 	printf("\n%s: attach(0x%x, 0x%x, 0x%x)\n",
    100 	    sc->sc_dev.dv_xname, parent, self, aux);
    101 #endif
    102 	bsc->sc_bst.base = (bus_addr_t)zap->va;
    103 	bsc->sc_bst.absm = &amiga_bus_stride_2;
    104 
    105 	sc->sc_bst_r = &bsc->sc_bst;
    106 	sc->sc_regs = bsc->sc_bst.base + 0x4000;
    107 
    108 	sc->sc_bst_m = &bsc->sc_bst;
    109 	sc->sc_mem = bsc->sc_bst.base + 0x8000;
    110 
    111 	sc->sc_reset = bah_zbus_reset;
    112 
    113 	bah_attach_subr(sc);
    114 
    115 	bsc->sc_isr.isr_intr = bahintr;
    116 	bsc->sc_isr.isr_arg = sc;
    117 	bsc->sc_isr.isr_ipl = 2;
    118 	add_isr(&bsc->sc_isr);
    119 }
    120 
    121 void
    122 bah_zbus_reset(struct bah_softc *sc, int onoff)
    123 {
    124 	struct bah_zbus_softc *bsc;
    125 	volatile u_int8_t *p;
    126 
    127 	bsc = (struct bah_zbus_softc *)sc;
    128 
    129 	p = (volatile u_int8_t *)bsc->sc_bst.base;
    130 
    131 	p[0x0000] = 0;	/* A2060 reset flipflop */
    132 	p[0xc000] = 0;	/* A560 reset flipflop */
    133 
    134 	if (!onoff)
    135 		return;
    136 
    137 #ifdef M68060
    138 	/* make sure we flush the store buffer before the delay */
    139 	(void)p[0x8000];
    140 #endif
    141 	DELAY(200);
    142 
    143 	p[0x0000] = 0xff;
    144 	p[0xc000] = 0xff;
    145 
    146 	return;
    147 }
    148