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
  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 #ifdef SC_NO_SUSPEND_VTYSWITCH
  53 static int sc_no_suspend_vtswitch = 1;
  54 #else
  55 static int sc_no_suspend_vtswitch = 0;
  56 #endif
  57 static int sc_cur_scr;
  58
  59 TUNABLE_INT("hw.syscons.sc_no_suspend_vtswitch", &sc_no_suspend_vtswitch);
  60 SYSCTL_DECL(_hw_syscons);
  61 SYSCTL_INT(_hw_syscons, OID_AUTO, sc_no_suspend_vtswitch, CTLFLAG_RW,
  62     &sc_no_suspend_vtswitch, 0, "Disable VT switch before suspend.");
  63
  64 static void
  65 scidentify(driver_t *driver, device_t parent)
  66 {
  67
  68         BUS_ADD_CHILD(parent, ISA_ORDER_SPECULATIVE, "sc", 0);
  69 }
  70
  71 static int
  72 scprobe(device_t dev)
  73 {
  74
  75         /* No pnp support */
  76         if (isa_get_vendorid(dev))
  77                 return (ENXIO);
  78
  79         device_set_desc(dev, "System console");
  80         return (sc_probe_unit(device_get_unit(dev), device_get_flags(dev)));
  81 }
  82
  83 static int
  84 scattach(device_t dev)
  85 {
  86
  87         return sc_attach_unit(device_get_unit(dev), device_get_flags(dev));
  88 }
  89
  90 static int
  91 scsuspend(device_t dev)
  92 {
  93         int             retry = 10;
  94         sc_softc_t      *sc;
  95
  96         sc = &main_softc;
  97
  98         if (sc->cur_scp == NULL)
  99                 return (0);
 100
 101         sc_cur_scr = sc->cur_scp->index;
 102
 103         if (sc_no_suspend_vtswitch)
 104                 return (0);
 105
 106         do {
 107                 sc_switch_scr(sc, 0);
 108                 if (!sc->switch_in_progress) {
 109                         break;
 110                 }
 111                 pause("scsuspend", hz);
 112         } while (retry--);
 113
 114         return (0);
 115 }
 116
 117 static int
 118 scresume(device_t dev)
 119 {
 120         sc_softc_t      *sc;
 121
 122         if (sc_no_suspend_vtswitch)
 123                 return (0);
 124
 125         sc = &main_softc;
 126         sc_switch_scr(sc, sc_cur_scr);
 127
 128         return (0);
 129 }
 130
 131 int
 132 sc_max_unit(void)
 133 {
 134
 135         return (devclass_get_maxunit(sc_devclass));
 136 }
 137
 138 sc_softc_t
 139 *sc_get_softc(int unit, int flags)
 140 {
 141         sc_softc_t *sc;
 142
 143         if (unit < 0)
 144                 return (NULL);
 145         if ((flags & SC_KERNEL_CONSOLE) != 0) {
 146                 /* FIXME: clear if it is wired to another unit! */
 147                 sc = &main_softc;
 148         } else {
 149                 sc = device_get_softc(devclass_get_device(sc_devclass, unit));
 150                 if (sc == NULL)
 151                         return (NULL);
 152         }
 153         sc->unit = unit;
 154         if ((sc->flags & SC_INIT_DONE) == 0) {
 155                 sc->keyboard = -1;
 156                 sc->adapter = -1;
 157                 sc->mouse_char = SC_MOUSE_CHAR;
 158         }
 159         return (sc);
 160 }
 161
 162 sc_softc_t
 163 *sc_find_softc(struct video_adapter *adp, struct keyboard *kbd)
 164 {
 165         sc_softc_t *sc;
 166         int i;
 167         int units;
 168
 169         sc = &main_softc;
 170         if ((adp == NULL || adp == sc->adp) &&
 171             (kbd == NULL || kbd == sc->kbd))
 172                 return (sc);
 173         units = devclass_get_maxunit(sc_devclass);
 174         for (i = 0; i < units; ++i) {
 175                 sc = device_get_softc(devclass_get_device(sc_devclass, i));
 176                 if (sc == NULL)
 177                         continue;
 178                 if ((adp == NULL || adp == sc->adp) &&
 179                     (kbd == NULL || kbd == sc->kbd))
 180                         return (sc);
 181         }
 182         return (NULL);
 183 }
 184
 185 int
 186 sc_get_cons_priority(int *unit, int *flags)
 187 {
 188         const char *at;
 189         int f, u;
 190
 191         *unit = -1;
 192         for (u = 0; u < 16; u++) {
 193                 if (resource_disabled(SC_DRIVER_NAME, u))
 194                         continue;
 195                 if (resource_string_value(SC_DRIVER_NAME, u, "at", &at) != 0)
 196                         continue;
 197                 if (resource_int_value(SC_DRIVER_NAME, u, "flags", &f) != 0)
 198                         f = 0;
 199                 if (f & SC_KERNEL_CONSOLE) {
 200                         /* the user designates this unit to be the console */
 201                         *unit = u;
 202                         *flags = f;
 203                         break;
 204                 }
 205                 if (*unit < 0) {
 206                         /* ...otherwise remember the first found unit */
 207                         *unit = u;
 208                         *flags = f;
 209                 }
 210         }
 211         if (*unit < 0) {
 212                 *unit = 0;
 213                 *flags = 0;
 214         }
 215         return (CN_INTERNAL);
 216 }
 217
 218 void
 219 sc_get_bios_values(bios_values_t *values)
 220 {
 221         values->cursor_start = 15;
 222         values->cursor_end = 16;
 223         values->shift_state = 0;
 224         values->bell_pitch = BELL_PITCH;
 225 }
 226
 227 int
 228 sc_tone(int herz)
 229 {
 230
 231         if (herz) {
 232                 if (timer_spkr_acquire())
 233                         return (EBUSY);
 234                 timer_spkr_setfreq(herz);
 235         } else
 236                 timer_spkr_release();
 237
 238         return (0);
 239 }
 240
 241 static device_method_t sc_methods[] = {
 242         DEVMETHOD(device_identify,      scidentify),
 243         DEVMETHOD(device_probe,         scprobe),
 244         DEVMETHOD(device_attach,        scattach),
 245         DEVMETHOD(device_suspend,       scsuspend),
 246         DEVMETHOD(device_resume,        scresume),
 247         { 0, 0 }
 248 };
 249
 250 static driver_t sc_driver = {
 251         SC_DRIVER_NAME,
 252         sc_methods,
 253         sizeof(sc_softc_t),
 254 };
 255
 256 DRIVER_MODULE(sc, isa, sc_driver, sc_devclass, 0, 0);