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if_bah_zbus.c revision 1.12 
      1 /*	$NetBSD: if_bah_zbus.c,v 1.12 2010/06/06 04:50:06 mrg 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 "opt_m68k_arch.h"
     33 
     34 #include <sys/cdefs.h>
     35 __KERNEL_RCSID(0, "$NetBSD: if_bah_zbus.c,v 1.12 2010/06/06 04:50:06 mrg Exp $");
     36 
     37 /*
     38  * Driver frontend for the Commodore Busines Machines and the
     39  * Ameristar ARCnet card.
     40  */
     41 
     42 #include <sys/types.h>
     43 #include <sys/param.h>
     44 
     45 #include <sys/conf.h>
     46 #include <sys/device.h>
     47 #include <sys/mbuf.h>
     48 #include <sys/socket.h>
     49 #include <sys/systm.h>
     50 #include <sys/kernel.h>
     51 
     52 #include <machine/bus.h>
     53 #include <machine/cpu.h>
     54 #include <machine/intr.h>
     55 
     56 #include <net/if.h>
     57 #include <net/route.h>
     58 
     59 #include <net/if_arc.h>
     60 
     61 #include <amiga/amiga/device.h>
     62 #include <amiga/dev/zbusvar.h>
     63 
     64 #include <dev/ic/smc90cx6var.h>
     65 
     66 /*
     67  * A2060 software status per interface
     68  */
     69 struct bah_zbus_softc {
     70 	struct	bah_softc	sc_bah;
     71 	struct	bus_space_tag	sc_bst;
     72 	struct	isr		sc_isr;
     73 };
     74 
     75 int	bah_zbus_match(struct device *, struct cfdata *, void *);
     76 void	bah_zbus_attach(struct device *, struct device *, void *);
     77 void	bah_zbus_reset(struct bah_softc *, int);
     78 
     79 CFATTACH_DECL(bah_zbus, sizeof(struct bah_zbus_softc),
     80     bah_zbus_match, bah_zbus_attach, NULL, NULL);
     81 
     82 int
     83 bah_zbus_match(struct device *parent, struct cfdata *cfp, void *aux)
     84 {
     85 	struct zbus_args *zap = aux;
     86 
     87 	if ((zap->manid == 514 || zap->manid == 1053) && zap->prodid == 9)
     88 		return (1);
     89 
     90 	return (0);
     91 }
     92 
     93 void
     94 bah_zbus_attach(struct device *parent, struct device *self, void *aux)
     95 {
     96 	struct bah_zbus_softc *bsc = (void *)self;
     97 	struct bah_softc *sc = &bsc->sc_bah;
     98 	struct zbus_args *zap = aux;
     99 
    100 #if (defined(BAH_DEBUG) && (BAH_DEBUG > 2))
    101 	printf("\n%s: attach(0x%x, 0x%x, 0x%x)\n",
    102 	    sc->sc_dev.dv_xname, parent, self, aux);
    103 #endif
    104 	bsc->sc_bst.base = (bus_addr_t)zap->va;
    105 	bsc->sc_bst.absm = &amiga_bus_stride_2;
    106 
    107 	sc->sc_bst_r = &bsc->sc_bst;
    108 	sc->sc_regs = bsc->sc_bst.base + 0x4000;
    109 
    110 	sc->sc_bst_m = &bsc->sc_bst;
    111 	sc->sc_mem = bsc->sc_bst.base + 0x8000;
    112 
    113 	sc->sc_reset = bah_zbus_reset;
    114 
    115 	bah_attach_subr(sc);
    116 
    117 	bsc->sc_isr.isr_intr = bahintr;
    118 	bsc->sc_isr.isr_arg = sc;
    119 	bsc->sc_isr.isr_ipl = 2;
    120 	add_isr(&bsc->sc_isr);
    121 }
    122 
    123 void
    124 bah_zbus_reset(struct bah_softc *sc, int onoff)
    125 {
    126 	struct bah_zbus_softc *bsc;
    127 	volatile u_int8_t *p;
    128 
    129 	bsc = (struct bah_zbus_softc *)sc;
    130 
    131 	p = (volatile u_int8_t *)bsc->sc_bst.base;
    132 
    133 	p[0x0000] = 0;	/* A2060 reset flipflop */
    134 	p[0xc000] = 0;	/* A560 reset flipflop */
    135 
    136 	if (!onoff)
    137 		return;
    138 
    139 #ifdef M68060
    140 	/* make sure we flush the store buffer before the delay */
    141 	(void)p[0x8000];
    142 #endif
    143 	DELAY(200);
    144 
    145 	p[0x0000] = 0xff;
    146 	p[0xc000] = 0xff;
    147 
    148 	return;
    149 }
    150