sys/dev/misc/syscons/syscons_nexus.c

   1 /*-
   2  * Copyright (c) 1999 Kazutaka YOKOTA <yokota@zodiac.mech.utsunomiya-u.ac.jp>
   3  * All rights reserved.
   4  *
   5  * Redistribution and use in source and binary forms, with or without
   6  * modification, are permitted provided that the following conditions
   7  * are met:
   8  * 1. Redistributions of source code must retain the above copyright
   9  *    notice, this list of conditions and the following disclaimer as
  10  *    the first lines of this file unmodified.
  11  * 2. Redistributions in binary form must reproduce the above copyright
  12  *    notice, this list of conditions and the following disclaimer in the
  13  *    documentation and/or other materials provided with the distribution.
  14  *
  15  * THIS SOFTWARE IS PROVIDED BY THE AUTHORS ``AS IS'' AND ANY EXPRESS OR
  16  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
  17  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
  18  * IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR ANY DIRECT, INDIRECT,
  19  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
  20  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  21  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  22  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  23  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
  24  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  25  *
  26  * $FreeBSD: src/sys/isa/syscons_isa.c,v 1.11.2.2 2001/08/01 10:42:28 yokota Exp $
  27  */
  28
  29 #include "opt_syscons.h"
  30
  31 #include <sys/param.h>
  32 #include <sys/systm.h>
  33 #include <sys/kernel.h>
  34 #include <sys/module.h>
  35 #include <sys/systimer.h>
  36 #include <sys/bus.h>
  37 #include <sys/cons.h>
  38
  39 #include <machine/console.h>
  40 #include <machine/framebuffer.h>
  41
  42 #include <dev/misc/syscons/syscons.h>
  43
  44 static devclass_t       sc_devclass;
  45
  46 static void     scidentify(driver_t *driver, device_t parent);
  47 static int      scprobe(device_t dev);
  48 static int      scattach(device_t dev);
  49
  50 static device_method_t sc_methods[] = {
  51         DEVMETHOD(device_identify,      scidentify),
  52         DEVMETHOD(device_probe,         scprobe),
  53         DEVMETHOD(device_attach,        scattach),
  54         DEVMETHOD_END
  55 };
  56
  57 static driver_t sc_driver = {
  58         SC_DRIVER_NAME,
  59         sc_methods,
  60         sizeof(sc_softc_t),
  61 };
  62
  63 static sc_softc_t main_softc;
  64
  65 static void
  66 scidentify(driver_t *driver, device_t parent)
  67 {
  68         device_t child;
  69         int i, u;
  70         int f;
  71
  72         for (i = -1; (i = resource_locate(i, SC_DRIVER_NAME)) >= 0;) {
  73                 u = resource_query_unit(i);
  74                 if (u < 0)
  75                         continue;
  76                 if (resource_disabled(SC_DRIVER_NAME, u))
  77                         continue;
  78                 if (resource_int_value(SC_DRIVER_NAME, u, "flags", &f) != 0)
  79                         f = 0;
  80                 child = BUS_ADD_CHILD(parent, parent, 0, "sc", u);
  81                 if (child == NULL)
  82                         panic("%s", __func__);
  83                 device_set_flags(child, f);
  84         }
  85 }
  86
  87 static int
  88 scprobe(device_t dev)
  89 {
  90         device_set_desc(dev, "System console");
  91         return sc_probe_unit(device_get_unit(dev), device_get_flags(dev));
  92 }
  93
  94 static int
  95 scattach(device_t dev)
  96 {
  97         return sc_attach_unit(device_get_unit(dev), device_get_flags(dev));
  98 }
  99
 100 int
 101 sc_max_unit(void)
 102 {
 103         return devclass_get_maxunit(sc_devclass);
 104 }
 105
 106 sc_softc_t *
 107 sc_get_softc(int unit, int flags)
 108 {
 109         sc_softc_t *sc;
 110
 111         if (unit < 0)
 112                 return NULL;
 113         if (flags & SC_KERNEL_CONSOLE) {
 114                 /* FIXME: clear if it is wired to another unit! */
 115                 sc = &main_softc;
 116         } else {
 117                 sc = (sc_softc_t *)device_get_softc(devclass_get_device(sc_devclass, unit));
 118                 if (sc == NULL)
 119                         return NULL;
 120         }
 121         sc->unit = unit;
 122         if (!(sc->flags & SC_INIT_DONE)) {
 123                 sc->keyboard = -1;
 124                 sc->adapter = -1;
 125                 sc->cursor_char = SC_CURSOR_CHAR;
 126                 sc->mouse_char = SC_MOUSE_CHAR;
 127         }
 128         return sc;
 129 }
 130
 131 sc_softc_t *
 132 sc_find_softc(struct video_adapter *adp, struct keyboard *kbd)
 133 {
 134         sc_softc_t *sc;
 135         int units;
 136         int i;
 137
 138         sc = &main_softc;
 139         if (((adp == NULL) || (adp == sc->adp))
 140             && ((kbd == NULL) || (kbd == sc->kbd)))
 141                 return sc;
 142         units = devclass_get_maxunit(sc_devclass);
 143         for (i = 0; i < units; ++i) {
 144                 sc = (sc_softc_t *)device_get_softc(devclass_get_device(sc_devclass, i));
 145                 if (sc == NULL)
 146                         continue;
 147                 if (((adp == NULL) || (adp == sc->adp))
 148                     && ((kbd == NULL) || (kbd == sc->kbd)))
 149                         return sc;
 150         }
 151         return NULL;
 152 }
 153
 154 int
 155 sc_get_cons_priority(int *unit, int *flags)
 156 {
 157         int u, f;
 158         int i;
 159         int have_efi_fb = (probe_efi_fb(1) == 0);
 160
 161         *unit = -1;
 162         for (i = -1; (i = resource_locate(i, SC_DRIVER_NAME)) >= 0;) {
 163                 u = resource_query_unit(i);
 164                 if (resource_disabled(SC_DRIVER_NAME, u))
 165                         continue;
 166                 if (resource_int_value(SC_DRIVER_NAME, u, "flags", &f) != 0)
 167                         f = 0;
 168                 /* We prefer the EFI Framebuffer over other video devices */
 169                 if (have_efi_fb && !(f & SC_EFI_FB))
 170                         continue;
 171                 if (f & SC_KERNEL_CONSOLE) {
 172                         /* the user designates this unit to be the console */
 173                         *unit = u;
 174                         *flags = f;
 175                         break;
 176                 }
 177                 if (*unit < 0) {
 178                         /* ...otherwise remember the first found unit */
 179                         *unit = u;
 180                         *flags = f;
 181                 }
 182         }
 183         if ((i < 0) && (*unit < 0))
 184                 return CN_DEAD;
 185         if (!have_efi_fb)
 186                 *flags &= ~SC_EFI_FB;
 187 #if 0
 188         return ((*flags & SC_KERNEL_CONSOLE) ? CN_INTERNAL : CN_NORMAL);
 189 #endif
 190         return CN_INTERNAL;
 191 }
 192
 193 void
 194 sc_get_bios_values(bios_values_t *values)
 195 {
 196         values->cursor_start = 0;
 197         values->cursor_end = 32;
 198         values->shift_state = 0;
 199         values->bell_pitch = BELL_PITCH;
 200 }
 201
 202 int
 203 sc_tone(int hertz)
 204 {
 205         return EBUSY;
 206 #if 0
 207         /* XXX use sound device if available */
 208         return 0;
 209 #endif
 210 }
 211
 212 DRIVER_MODULE(sc, nexus, sc_driver, sc_devclass, NULL, NULL);