sys/arch/amiga/dev/if_bah_zbus.c

   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  *
  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 2002/10/02 04:55:51 thorpej 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 }