syscons_cbus.c

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    1 /*-
    2  * Copyright (c) 1999 FreeBSD(98) Porting Team.
    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 
   27 #include <sys/cdefs.h>
   28 __FBSDID("$FreeBSD$");
   29 
   30 #include "opt_syscons.h"
   31 
   32 #include <sys/param.h>
   33 #include <sys/systm.h>
   34 #include <sys/kernel.h>
   35 #include <sys/module.h>
   36 #include <sys/bus.h>
   37 #include <sys/cons.h>
   38 #include <sys/consio.h>
   39 #include <sys/sysctl.h>
   40 
   41 #include <machine/clock.h>
   42 
   43 #include <pc98/pc98/pc98_machdep.h>
   44 
   45 #include <dev/syscons/syscons.h>
   46 
   47 #include <isa/isavar.h>
   48 
   49 static devclass_t       sc_devclass;
   50 
   51 static sc_softc_t       main_softc;
   52 
   53 static void
   54 scidentify(driver_t *driver, device_t parent)
   55 {
   56 
   57         BUS_ADD_CHILD(parent, ISA_ORDER_SPECULATIVE, "sc", 0);
   58 }
   59 
   60 static int
   61 scprobe(device_t dev)
   62 {
   63 
   64         /* No pnp support */
   65         if (isa_get_vendorid(dev))
   66                 return (ENXIO);
   67 
   68         device_set_desc(dev, "System console");
   69         return (sc_probe_unit(device_get_unit(dev), device_get_flags(dev)));
   70 }
   71 
   72 static int
   73 scattach(device_t dev)
   74 {
   75 
   76         return sc_attach_unit(device_get_unit(dev), device_get_flags(dev));
   77 }
   78 
   79 int
   80 sc_max_unit(void)
   81 {
   82 
   83         return (devclass_get_maxunit(sc_devclass));
   84 }
   85 
   86 sc_softc_t
   87 *sc_get_softc(int unit, int flags)
   88 {
   89         sc_softc_t *sc;
   90 
   91         if (unit < 0)
   92                 return (NULL);
   93         if ((flags & SC_KERNEL_CONSOLE) != 0) {
   94                 /* FIXME: clear if it is wired to another unit! */
   95                 sc = &main_softc;
   96         } else {
   97                 sc = device_get_softc(devclass_get_device(sc_devclass, unit));
   98                 if (sc == NULL)
   99                         return (NULL);
  100         }
  101         sc->unit = unit;
  102         if ((sc->flags & SC_INIT_DONE) == 0) {
  103                 sc->keyboard = -1;
  104                 sc->adapter = -1;
  105                 sc->mouse_char = SC_MOUSE_CHAR;
  106         }
  107         return (sc);
  108 }
  109 
  110 sc_softc_t
  111 *sc_find_softc(struct video_adapter *adp, struct keyboard *kbd)
  112 {
  113         sc_softc_t *sc;
  114         int i;
  115         int units;
  116 
  117         sc = &main_softc;
  118         if ((adp == NULL || adp == sc->adp) &&
  119             (kbd == NULL || kbd == sc->kbd))
  120                 return (sc);
  121         units = devclass_get_maxunit(sc_devclass);
  122         for (i = 0; i < units; ++i) {
  123                 sc = device_get_softc(devclass_get_device(sc_devclass, i));
  124                 if (sc == NULL)
  125                         continue;
  126                 if ((adp == NULL || adp == sc->adp) &&
  127                     (kbd == NULL || kbd == sc->kbd))
  128                         return (sc);
  129         }
  130         return (NULL);
  131 }
  132 
  133 int
  134 sc_get_cons_priority(int *unit, int *flags)
  135 {
  136         const char *at;
  137         int f, u;
  138 
  139         *unit = -1;
  140         for (u = 0; u < 16; u++) {
  141                 if (resource_disabled(SC_DRIVER_NAME, u))
  142                         continue;
  143                 if (resource_string_value(SC_DRIVER_NAME, u, "at", &at) != 0)
  144                         continue;
  145                 if (resource_int_value(SC_DRIVER_NAME, u, "flags", &f) != 0)
  146                         f = 0;
  147                 if (f & SC_KERNEL_CONSOLE) {
  148                         /* the user designates this unit to be the console */
  149                         *unit = u;
  150                         *flags = f;
  151                         break;
  152                 }
  153                 if (*unit < 0) {
  154                         /* ...otherwise remember the first found unit */
  155                         *unit = u;
  156                         *flags = f;
  157                 }
  158         }
  159         if (*unit < 0) {
  160                 *unit = 0;
  161                 *flags = 0;
  162         }
  163         return (CN_INTERNAL);
  164 }
  165 
  166 void
  167 sc_get_bios_values(bios_values_t *values)
  168 {
  169         values->cursor_start = 15;
  170         values->cursor_end = 16;
  171         values->shift_state = 0;
  172         values->bell_pitch = BELL_PITCH;
  173 }
  174 
  175 int
  176 sc_tone(int herz)
  177 {
  178 
  179         if (herz) {
  180                 if (timer_spkr_acquire())
  181                         return (EBUSY);
  182                 timer_spkr_setfreq(herz);
  183         } else
  184                 timer_spkr_release();
  185 
  186         return (0);
  187 }
  188 
  189 static device_method_t sc_methods[] = {
  190         DEVMETHOD(device_identify,      scidentify),
  191         DEVMETHOD(device_probe,         scprobe),
  192         DEVMETHOD(device_attach,        scattach),
  193         { 0, 0 }
  194 };
  195 
  196 static driver_t sc_driver = {
  197         SC_DRIVER_NAME,
  198         sc_methods,
  199         sizeof(sc_softc_t),
  200 };
  201 
  202 DRIVER_MODULE(sc, isa, sc_driver, sc_devclass, 0, 0);

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FreeBSD/Linux Kernel Cross Reference sys/pc98/cbus/syscons_cbus.c

FreeBSD/Linux Kernel Cross Reference
sys/pc98/cbus/syscons_cbus.c