sys/arch/amiga/dev/ioblix_zbus.c

   1 /*      $NetBSD: ioblix_zbus.c,v 1.13 2005/12/11 12:16:28 christos Exp $ */
   2
   3 /*-
   4  * Copyright (c) 2000 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: ioblix_zbus.c,v 1.13 2005/12/11 12:16:28 christos Exp $");
  34
  35 /* IOBlix Zorro driver */
  36 /* XXX to be done: we need to probe the com clock speed! */
  37
  38 #include <sys/types.h>
  39
  40 #include <sys/conf.h>
  41 #include <sys/device.h>
  42 #include <sys/systm.h>
  43 #include <sys/param.h>
  44
  45 #include <machine/bus.h>
  46
  47 #include <amiga/include/cpu.h>
  48
  49 #include <amiga/amiga/device.h>
  50 #include <amiga/amiga/drcustom.h>
  51
  52 #include <amiga/dev/supio.h>
  53 #include <amiga/dev/zbusvar.h>
  54
  55
  56 struct iobz_softc {
  57         struct device sc_dev;
  58         struct bus_space_tag sc_bst;
  59 };
  60
  61 int iobzmatch(struct device *, struct cfdata *, void *);
  62 void iobzattach(struct device *, struct device *, void *);
  63 int iobzprint(void *auxp, const char *);
  64 void iobz_shutdown(void *);
  65
  66 CFATTACH_DECL(iobl_zbus, sizeof(struct iobz_softc),
  67     iobzmatch, iobzattach, NULL, NULL);
  68
  69 int
  70 iobzmatch(struct device *parent, struct cfdata *cfp, void *auxp)
  71 {
  72
  73         struct zbus_args *zap;
  74
  75         zap = auxp;
  76
  77         if (zap->manid != 4711)
  78                 return (0);
  79
  80         if (zap->prodid != 1)
  81                 return (0);
  82
  83         return (1);
  84 }
  85
  86 struct iobz_devs {
  87         const char *name;
  88         unsigned off;
  89         int arg;
  90 } iobzdevices[] = {
  91         { "com", 0x100, 24000000 },     /* XXX see below */
  92         { "com", 0x108, 24000000 },
  93         { "com", 0x110, 24000000 },
  94         { "com", 0x118, 24000000 },
  95         { "lpt", 0x200, 0 },
  96         { "lpt", 0x300, 0 },
  97         { 0, 0, 0}
  98 };
  99
 100 #ifndef IOBZCLOCK
 101 #define IOBZCLOCK 22118400;
 102 #endif
 103 int iobzclock = IOBZCLOCK;              /* patchable! */
 104
 105 void
 106 iobzattach(struct device *parent, struct device *self, void *auxp)
 107 {
 108         struct iobz_softc *iobzsc;
 109         struct iobz_devs  *iobzd;
 110         struct zbus_args *zap;
 111         struct supio_attach_args supa;
 112         extern const struct amiga_bus_space_methods amiga_bus_stride_16;
 113         volatile u_int8_t *p;
 114
 115
 116         iobzsc = (struct iobz_softc *)self;
 117         zap = auxp;
 118
 119         if (parent)
 120                 printf("\n");
 121
 122         iobzsc->sc_bst.base = (u_long)zap->va;
 123         iobzsc->sc_bst.absm = &amiga_bus_stride_16;
 124
 125         supa.supio_iot = &iobzsc->sc_bst;
 126         supa.supio_ipl = 6;
 127
 128         iobzd = iobzdevices;
 129
 130         while (iobzd->name) {
 131                 supa.supio_name = iobzd->name;
 132                 supa.supio_iobase = iobzd->off;
 133                 supa.supio_arg = iobzclock /* XXX iobzd->arg */;
 134                 config_found(self, &supa, iobzprint); /* XXX */
 135                 ++iobzd;
 136         }
 137
 138         p = (volatile u_int8_t *)zap->va + 2;
 139         (void)shutdownhook_establish(iobz_shutdown, __UNVOLATILE(p));
 140         *p = ((*p) & 0x1F) | 0x80;
 141 }
 142
 143 int
 144 iobzprint(void *auxp, const char *pnp)
 145 {
 146         struct supio_attach_args *supa;
 147         supa = auxp;
 148
 149         if (pnp == NULL)
 150                 return(QUIET);
 151
 152         aprint_normal("%s at %s port 0x%02x",
 153             supa->supio_name, pnp, supa->supio_iobase);
 154
 155         return(UNCONF);
 156 }
 157
 158 /*
 159  * Disable board interrupts at shutdown time.
 160  */
 161
 162 void
 163 iobz_shutdown(void *p) {
 164         volatile int8_t *q;
 165
 166         q = p;
 167
 168         *q &= 0x1F;
 169 }