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 #include <machine/ppireg.h>
  42 #include <machine/timerreg.h>
  43
  44 #include <pc98/pc98/pc98_machdep.h>
  45
  46 #include <dev/syscons/syscons.h>
  47
  48 #include <isa/isavar.h>
  49
  50 static devclass_t       sc_devclass;
  51
  52 static sc_softc_t main_softc;
  53 #ifdef SC_NO_SUSPEND_VTYSWITCH
  54 static int sc_no_suspend_vtswitch = 1;
  55 #else
  56 static int sc_no_suspend_vtswitch = 0;
  57 #endif
  58 static int sc_cur_scr;
  59
  60 TUNABLE_INT("hw.syscons.sc_no_suspend_vtswitch", (int *)&sc_no_suspend_vtswitch);
  61 SYSCTL_DECL(_hw_syscons);
  62 SYSCTL_INT(_hw_syscons, OID_AUTO, sc_no_suspend_vtswitch, CTLFLAG_RW,
  63         &sc_no_suspend_vtswitch, 0, "Disable VT switch before suspend.");
  64
  65 static void
  66 scidentify (driver_t *driver, device_t parent)
  67 {
  68         BUS_ADD_CHILD(parent, ISA_ORDER_SPECULATIVE, "sc", 0);
  69 }
  70
  71 static int
  72 scprobe(device_t dev)
  73 {
  74         /* No pnp support */
  75         if (isa_get_vendorid(dev))
  76                 return (ENXIO);
  77
  78         device_set_desc(dev, "System console");
  79         return sc_probe_unit(device_get_unit(dev), device_get_flags(dev));
  80 }
  81
  82 static int
  83 scattach(device_t dev)
  84 {
  85         return sc_attach_unit(device_get_unit(dev), device_get_flags(dev));
  86 }
  87
  88 static int
  89 scsuspend(device_t dev)
  90 {
  91         int             retry = 10;
  92         sc_softc_t      *sc;
  93
  94         sc = &main_softc;
  95
  96         if (sc->cur_scp == NULL)
  97                 return (0);
  98
  99         sc_cur_scr = sc->cur_scp->index;
 100
 101         if (sc_no_suspend_vtswitch)
 102                 return (0);
 103
 104         do {
 105                 sc_switch_scr(sc, 0);
 106                 if (!sc->switch_in_progress) {
 107                         break;
 108                 }
 109                 pause("scsuspend", hz);
 110         } while (retry--);
 111
 112         return (0);
 113 }
 114
 115 static int
 116 scresume(device_t dev)
 117 {
 118         sc_softc_t      *sc;
 119
 120         if (sc_no_suspend_vtswitch)
 121                 return (0);
 122
 123         sc = &main_softc;
 124         sc_switch_scr(sc, sc_cur_scr);
 125
 126         return (0);
 127 }
 128
 129 int
 130 sc_max_unit(void)
 131 {
 132         return devclass_get_maxunit(sc_devclass);
 133 }
 134
 135 sc_softc_t
 136 *sc_get_softc(int unit, int flags)
 137 {
 138         sc_softc_t *sc;
 139
 140         if (unit < 0)
 141                 return NULL;
 142         if (flags & SC_KERNEL_CONSOLE) {
 143                 /* FIXME: clear if it is wired to another unit! */
 144                 sc = &main_softc;
 145         } else {
 146                 sc = (sc_softc_t *)device_get_softc(devclass_get_device(sc_devclass, unit));
 147                 if (sc == NULL)
 148                         return NULL;
 149         }
 150         sc->unit = unit;
 151         if (!(sc->flags & SC_INIT_DONE)) {
 152                 sc->keyboard = -1;
 153                 sc->adapter = -1;
 154                 sc->mouse_char = SC_MOUSE_CHAR;
 155         }
 156         return sc;
 157 }
 158
 159 sc_softc_t
 160 *sc_find_softc(struct video_adapter *adp, struct keyboard *kbd)
 161 {
 162         sc_softc_t *sc;
 163         int units;
 164         int i;
 165
 166         sc = &main_softc;
 167         if (((adp == NULL) || (adp == sc->adp))
 168             && ((kbd == NULL) || (kbd == sc->kbd)))
 169                 return sc;
 170         units = devclass_get_maxunit(sc_devclass);
 171         for (i = 0; i < units; ++i) {
 172                 sc = (sc_softc_t *)device_get_softc(devclass_get_device(sc_devclass, i));
 173                 if (sc == NULL)
 174                         continue;
 175                 if (((adp == NULL) || (adp == sc->adp))
 176                     && ((kbd == NULL) || (kbd == sc->kbd)))
 177                         return sc;
 178         }
 179         return NULL;
 180 }
 181
 182 int
 183 sc_get_cons_priority(int *unit, int *flags)
 184 {
 185         const char *at;
 186         int u, f;
 187
 188         *unit = -1;
 189         for (u = 0; u < 16; u++) {
 190                 if (resource_disabled(SC_DRIVER_NAME, u))
 191                         continue;
 192                 if (resource_string_value(SC_DRIVER_NAME, u, "at", &at) != 0)
 193                         continue;
 194                 if (resource_int_value(SC_DRIVER_NAME, u, "flags", &f) != 0)
 195                         f = 0;
 196                 if (f & SC_KERNEL_CONSOLE) {
 197                         /* the user designates this unit to be the console */
 198                         *unit = u;
 199                         *flags = f;
 200                         break;
 201                 }
 202                 if (*unit < 0) {
 203                         /* ...otherwise remember the first found unit */
 204                         *unit = u;
 205                         *flags = f;
 206                 }
 207         }
 208         if (*unit < 0) {
 209                 *unit = 0;
 210                 *flags = 0;
 211         }
 212         return CN_INTERNAL;
 213 }
 214
 215 void
 216 sc_get_bios_values(bios_values_t *values)
 217 {
 218         values->cursor_start = 15;
 219         values->cursor_end = 16;
 220         values->shift_state = 0;
 221         if (pc98_machine_type & M_8M)
 222                 values->bell_pitch = BELL_PITCH_8M;
 223         else
 224                 values->bell_pitch = BELL_PITCH_5M;
 225 }
 226
 227 int
 228 sc_tone(int herz)
 229 {
 230
 231         if (herz) {
 232                 /* enable counter 1 */
 233                 ppi_spkr_on();
 234                 /* set command for counter 1, 2 byte write */
 235                 if (timer_spkr_acquire())
 236                         return EBUSY;
 237                 /* set pitch */
 238                 spkr_set_pitch(timer_freq / herz);
 239         } else {
 240                 /* disable counter 1 */
 241                 ppi_spkr_off();
 242                 timer_spkr_release();
 243         }
 244         return 0;
 245 }
 246
 247 static device_method_t sc_methods[] = {
 248         DEVMETHOD(device_identify,      scidentify),
 249         DEVMETHOD(device_probe,         scprobe),
 250         DEVMETHOD(device_attach,        scattach),
 251         DEVMETHOD(device_suspend,       scsuspend),
 252         DEVMETHOD(device_resume,        scresume),
 253         { 0, 0 }
 254 };
 255
 256 static driver_t sc_driver = {
 257         SC_DRIVER_NAME,
 258         sc_methods,
 259         sizeof(sc_softc_t),
 260 };
 261
 262 DRIVER_MODULE(sc, isa, sc_driver, sc_devclass, 0, 0);