sys/pc98/cbus/syscons_cbus.c

   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  * $FreeBSD$
  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/bus.h>
  36 #include <sys/cons.h>
  37 #include <sys/consio.h>
  38 #include <sys/sysctl.h>
  39
  40 #include <machine/clock.h>
  41
  42 #include <pc98/pc98/pc98_machdep.h>
  43
  44 #include <dev/syscons/syscons.h>
  45
  46 #include <isa/isavar.h>
  47
  48 static devclass_t       sc_devclass;
  49
  50 static sc_softc_t main_softc;
  51 #ifdef SC_NO_SUSPEND_VTYSWITCH
  52 static int sc_no_suspend_vtswitch = 1;
  53 #else
  54 static int sc_no_suspend_vtswitch = 0;
  55 #endif
  56 static int sc_cur_scr;
  57
  58 TUNABLE_INT("hw.syscons.sc_no_suspend_vtswitch", (int *)&sc_no_suspend_vtswitch);
  59 SYSCTL_DECL(_hw_syscons);
  60 SYSCTL_INT(_hw_syscons, OID_AUTO, sc_no_suspend_vtswitch, CTLFLAG_RW,
  61         &sc_no_suspend_vtswitch, 0, "Disable VT switch before suspend.");
  62
  63 static void
  64 scidentify (driver_t *driver, device_t parent)
  65 {
  66         BUS_ADD_CHILD(parent, ISA_ORDER_SPECULATIVE, "sc", 0);
  67 }
  68
  69 static int
  70 scprobe(device_t dev)
  71 {
  72         /* No pnp support */
  73         if (isa_get_vendorid(dev))
  74                 return (ENXIO);
  75
  76         device_set_desc(dev, "System console");
  77         return sc_probe_unit(device_get_unit(dev), device_get_flags(dev));
  78 }
  79
  80 static int
  81 scattach(device_t dev)
  82 {
  83         return sc_attach_unit(device_get_unit(dev), device_get_flags(dev));
  84 }
  85
  86 static int
  87 scsuspend(device_t dev)
  88 {
  89         int             retry = 10;
  90         sc_softc_t      *sc;
  91
  92         sc = &main_softc;
  93
  94         if (sc->cur_scp == NULL)
  95                 return (0);
  96
  97         sc_cur_scr = sc->cur_scp->index;
  98
  99         if (sc_no_suspend_vtswitch)
 100                 return (0);
 101
 102         do {
 103                 sc_switch_scr(sc, 0);
 104                 if (!sc->switch_in_progress) {
 105                         break;
 106                 }
 107                 pause("scsuspend", hz);
 108         } while (retry--);
 109
 110         return (0);
 111 }
 112
 113 static int
 114 scresume(device_t dev)
 115 {
 116         sc_softc_t      *sc;
 117
 118         if (sc_no_suspend_vtswitch)
 119                 return (0);
 120
 121         sc = &main_softc;
 122         sc_switch_scr(sc, sc_cur_scr);
 123
 124         return (0);
 125 }
 126
 127 int
 128 sc_max_unit(void)
 129 {
 130         return devclass_get_maxunit(sc_devclass);
 131 }
 132
 133 sc_softc_t
 134 *sc_get_softc(int unit, int flags)
 135 {
 136         sc_softc_t *sc;
 137
 138         if (unit < 0)
 139                 return NULL;
 140         if (flags & SC_KERNEL_CONSOLE) {
 141                 /* FIXME: clear if it is wired to another unit! */
 142                 sc = &main_softc;
 143         } else {
 144                 sc = (sc_softc_t *)device_get_softc(devclass_get_device(sc_devclass, unit));
 145                 if (sc == NULL)
 146                         return NULL;
 147         }
 148         sc->unit = unit;
 149         if (!(sc->flags & SC_INIT_DONE)) {
 150                 sc->keyboard = -1;
 151                 sc->adapter = -1;
 152                 sc->mouse_char = SC_MOUSE_CHAR;
 153         }
 154         return sc;
 155 }
 156
 157 sc_softc_t
 158 *sc_find_softc(struct video_adapter *adp, struct keyboard *kbd)
 159 {
 160         sc_softc_t *sc;
 161         int units;
 162         int i;
 163
 164         sc = &main_softc;
 165         if (((adp == NULL) || (adp == sc->adp))
 166             && ((kbd == NULL) || (kbd == sc->kbd)))
 167                 return sc;
 168         units = devclass_get_maxunit(sc_devclass);
 169         for (i = 0; i < units; ++i) {
 170                 sc = (sc_softc_t *)device_get_softc(devclass_get_device(sc_devclass, i));
 171                 if (sc == NULL)
 172                         continue;
 173                 if (((adp == NULL) || (adp == sc->adp))
 174                     && ((kbd == NULL) || (kbd == sc->kbd)))
 175                         return sc;
 176         }
 177         return NULL;
 178 }
 179
 180 int
 181 sc_get_cons_priority(int *unit, int *flags)
 182 {
 183         const char *at;
 184         int u, f;
 185
 186         *unit = -1;
 187         for (u = 0; u < 16; u++) {
 188                 if (resource_disabled(SC_DRIVER_NAME, u))
 189                         continue;
 190                 if (resource_string_value(SC_DRIVER_NAME, u, "at", &at) != 0)
 191                         continue;
 192                 if (resource_int_value(SC_DRIVER_NAME, u, "flags", &f) != 0)
 193                         f = 0;
 194                 if (f & SC_KERNEL_CONSOLE) {
 195                         /* the user designates this unit to be the console */
 196                         *unit = u;
 197                         *flags = f;
 198                         break;
 199                 }
 200                 if (*unit < 0) {
 201                         /* ...otherwise remember the first found unit */
 202                         *unit = u;
 203                         *flags = f;
 204                 }
 205         }
 206         if (*unit < 0) {
 207                 *unit = 0;
 208                 *flags = 0;
 209         }
 210         return CN_INTERNAL;
 211 }
 212
 213 void
 214 sc_get_bios_values(bios_values_t *values)
 215 {
 216         values->cursor_start = 15;
 217         values->cursor_end = 16;
 218         values->shift_state = 0;
 219         values->bell_pitch = BELL_PITCH;
 220 }
 221
 222 int
 223 sc_tone(int herz)
 224 {
 225
 226         if (herz) {
 227                 if (timer_spkr_acquire())
 228                         return EBUSY;
 229                 timer_spkr_setfreq(herz);
 230         } else {
 231                 timer_spkr_release();
 232         }
 233         return 0;
 234 }
 235
 236 static device_method_t sc_methods[] = {
 237         DEVMETHOD(device_identify,      scidentify),
 238         DEVMETHOD(device_probe,         scprobe),
 239         DEVMETHOD(device_attach,        scattach),
 240         DEVMETHOD(device_suspend,       scsuspend),
 241         DEVMETHOD(device_resume,        scresume),
 242         { 0, 0 }
 243 };
 244
 245 static driver_t sc_driver = {
 246         SC_DRIVER_NAME,
 247         sc_methods,
 248         sizeof(sc_softc_t),
 249 };
 250
 251 DRIVER_MODULE(sc, isa, sc_driver, sc_devclass, 0, 0);