sys/isa/syscons_isa.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
  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/kbio.h>
  39 #include <sys/consio.h>
  40 #include <sys/sysctl.h>
  41
  42 #if defined(__i386__) || defined(__amd64__)
  43
  44 #include <machine/clock.h>
  45 #include <machine/md_var.h>
  46 #include <machine/pc/bios.h>
  47
  48 #include <vm/vm.h>
  49 #include <vm/pmap.h>
  50 #include <vm/vm_param.h>
  51
  52 #define BIOS_CLKED      (1 << 6)
  53 #define BIOS_NLKED      (1 << 5)
  54 #define BIOS_SLKED      (1 << 4)
  55 #define BIOS_ALKED      0
  56
  57 #endif
  58
  59 #include <dev/syscons/syscons.h>
  60
  61 #include <isa/isavar.h>
  62
  63 #include "opt_xbox.h"
  64
  65 #ifdef XBOX
  66 #include <machine/xbox.h>
  67 #endif
  68
  69 static devclass_t       sc_devclass;
  70
  71 static sc_softc_t       main_softc;
  72 #ifdef SC_NO_SUSPEND_VTYSWITCH
  73 static int sc_no_suspend_vtswitch = 1;
  74 #else
  75 static int sc_no_suspend_vtswitch = 0;
  76 #endif
  77 static int sc_cur_scr;
  78
  79 TUNABLE_INT("hw.syscons.sc_no_suspend_vtswitch", &sc_no_suspend_vtswitch);
  80 SYSCTL_DECL(_hw_syscons);
  81 SYSCTL_INT(_hw_syscons, OID_AUTO, sc_no_suspend_vtswitch, CTLFLAG_RW,
  82     &sc_no_suspend_vtswitch, 0, "Disable VT switch before suspend.");
  83
  84 static void
  85 scidentify(driver_t *driver, device_t parent)
  86 {
  87
  88         BUS_ADD_CHILD(parent, ISA_ORDER_SPECULATIVE, "sc", 0);
  89 }
  90
  91 static int
  92 scprobe(device_t dev)
  93 {
  94
  95         /* No pnp support */
  96         if (isa_get_vendorid(dev))
  97                 return (ENXIO);
  98
  99         device_set_desc(dev, "System console");
 100         return (sc_probe_unit(device_get_unit(dev), device_get_flags(dev)));
 101 }
 102
 103 static int
 104 scattach(device_t dev)
 105 {
 106
 107         return (sc_attach_unit(device_get_unit(dev), device_get_flags(dev) |
 108             SC_AUTODETECT_KBD));
 109 }
 110
 111 static int
 112 scsuspend(device_t dev)
 113 {
 114         int             retry = 10;
 115         sc_softc_t      *sc;
 116
 117         sc = &main_softc;
 118
 119         if (sc->cur_scp == NULL)
 120                 return (0);
 121
 122         if (sc->suspend_in_progress == 0) {
 123                 sc_cur_scr = sc->cur_scp->index;
 124                 if (!sc_no_suspend_vtswitch && sc_cur_scr != 0)
 125                         do {
 126                                 sc_switch_scr(sc, 0);
 127                                 if (!sc->switch_in_progress)
 128                                         break;
 129                                 pause("scsuspend", hz);
 130                         } while (retry--);
 131         }
 132         sc->suspend_in_progress++;
 133
 134         return (0);
 135 }
 136
 137 static int
 138 scresume(device_t dev)
 139 {
 140         sc_softc_t      *sc;
 141
 142         sc = &main_softc;
 143
 144         if (sc->cur_scp == NULL)
 145                 return (0);
 146
 147         sc->suspend_in_progress--;
 148         if (sc->suspend_in_progress == 0) {
 149                 if (!sc_no_suspend_vtswitch && sc_cur_scr != 0)
 150                         sc_switch_scr(sc, sc_cur_scr);
 151                 else
 152                         mark_all(sc->cur_scp);
 153         }
 154
 155         return (0);
 156 }
 157
 158 int
 159 sc_max_unit(void)
 160 {
 161
 162         return (devclass_get_maxunit(sc_devclass));
 163 }
 164
 165 sc_softc_t
 166 *sc_get_softc(int unit, int flags)
 167 {
 168         sc_softc_t *sc;
 169
 170         if (unit < 0)
 171                 return (NULL);
 172         if ((flags & SC_KERNEL_CONSOLE) != 0) {
 173                 /* FIXME: clear if it is wired to another unit! */
 174                 sc = &main_softc;
 175         } else {
 176                 sc = device_get_softc(devclass_get_device(sc_devclass, unit));
 177                 if (sc == NULL)
 178                         return (NULL);
 179         }
 180         sc->unit = unit;
 181         if ((sc->flags & SC_INIT_DONE) == 0) {
 182                 sc->keyboard = -1;
 183                 sc->adapter = -1;
 184                 sc->cursor_char = SC_CURSOR_CHAR;
 185                 sc->mouse_char = SC_MOUSE_CHAR;
 186         }
 187         return (sc);
 188 }
 189
 190 sc_softc_t
 191 *sc_find_softc(struct video_adapter *adp, struct keyboard *kbd)
 192 {
 193         sc_softc_t *sc;
 194         int i;
 195         int units;
 196
 197         sc = &main_softc;
 198         if ((adp == NULL || adp == sc->adp) &&
 199             (kbd == NULL || kbd == sc->kbd))
 200                 return (sc);
 201         units = devclass_get_maxunit(sc_devclass);
 202         for (i = 0; i < units; ++i) {
 203                 sc = device_get_softc(devclass_get_device(sc_devclass, i));
 204                 if (sc == NULL)
 205                         continue;
 206                 if ((adp == NULL || adp == sc->adp) &&
 207                     (kbd == NULL || kbd == sc->kbd))
 208                         return (sc);
 209         }
 210         return (NULL);
 211 }
 212
 213 int
 214 sc_get_cons_priority(int *unit, int *flags)
 215 {
 216         const char *at;
 217         int f, u;
 218
 219 #ifdef XBOX
 220         /*
 221          * The XBox Loader does not support hints, which makes our initial
 222          * console probe fail. Therefore, if an XBox is found, we hardcode the
 223          * existence of the console, as it is always there anyway.
 224          */
 225         if (arch_i386_is_xbox) {
 226                 *unit = 0;
 227                 *flags = SC_KERNEL_CONSOLE;
 228                 return (CN_INTERNAL);
 229         }
 230 #endif
 231
 232         *unit = -1;
 233         for (u = 0; u < 16; u++) {
 234                 if (resource_disabled(SC_DRIVER_NAME, u))
 235                         continue;
 236                 if (resource_string_value(SC_DRIVER_NAME, u, "at", &at) != 0)
 237                         continue;
 238                 if (resource_int_value(SC_DRIVER_NAME, u, "flags", &f) != 0)
 239                         f = 0;
 240                 if (f & SC_KERNEL_CONSOLE) {
 241                         /* the user designates this unit to be the console */
 242                         *unit = u;
 243                         *flags = f;
 244                         break;
 245                 }
 246                 if (*unit < 0) {
 247                         /* ...otherwise remember the first found unit */
 248                         *unit = u;
 249                         *flags = f;
 250                 }
 251         }
 252         if (*unit < 0) {
 253                 *unit = 0;
 254                 *flags = 0;
 255         }
 256 #if 0
 257         return ((*flags & SC_KERNEL_CONSOLE) != 0 ? CN_INTERNAL : CN_NORMAL);
 258 #endif
 259         return (CN_INTERNAL);
 260 }
 261
 262 void
 263 sc_get_bios_values(bios_values_t *values)
 264 {
 265 #if defined(__i386__) || defined(__amd64__)
 266         uint8_t shift;
 267
 268         values->cursor_start = *(uint8_t *)BIOS_PADDRTOVADDR(0x461);
 269         values->cursor_end = *(uint8_t *)BIOS_PADDRTOVADDR(0x460);
 270         shift = *(uint8_t *)BIOS_PADDRTOVADDR(0x417);
 271         values->shift_state = ((shift & BIOS_CLKED) != 0 ? CLKED : 0) |
 272             ((shift & BIOS_NLKED) != 0 ? NLKED : 0) |
 273             ((shift & BIOS_SLKED) != 0 ? SLKED : 0) |
 274             ((shift & BIOS_ALKED) != 0 ? ALKED : 0);
 275 #else
 276         values->cursor_start = 0;
 277         values->cursor_end = 32;
 278         values->shift_state = 0;
 279 #endif
 280         values->bell_pitch = BELL_PITCH;
 281 }
 282
 283 int
 284 sc_tone(int herz)
 285 {
 286
 287 #if defined(HAS_TIMER_SPKR)
 288         if (herz) {
 289                 if (timer_spkr_acquire())
 290                         return (EBUSY);
 291                 timer_spkr_setfreq(herz);
 292         } else
 293                 timer_spkr_release();
 294 #endif
 295
 296         return (0);
 297 }
 298
 299 static device_method_t sc_methods[] = {
 300         DEVMETHOD(device_identify,      scidentify),
 301         DEVMETHOD(device_probe,         scprobe),
 302         DEVMETHOD(device_attach,        scattach),
 303         DEVMETHOD(device_suspend,       scsuspend),
 304         DEVMETHOD(device_resume,        scresume),
 305         { 0, 0 }
 306 };
 307
 308 static driver_t sc_driver = {
 309         SC_DRIVER_NAME,
 310         sc_methods,
 311         sizeof(sc_softc_t),
 312 };
 313
 314 DRIVER_MODULE(sc, isa, sc_driver, sc_devclass, 0, 0);
 315
 316 static devclass_t       scpm_devclass;
 317
 318 static void
 319 scpm_identify(driver_t *driver, device_t parent)
 320 {
 321
 322         device_add_child(parent, "scpm", 0);
 323 }
 324
 325 static int
 326 scpm_probe(device_t dev)
 327 {
 328
 329         device_set_desc(dev, SC_DRIVER_NAME " suspend/resume");
 330         device_quiet(dev);
 331
 332         return (BUS_PROBE_DEFAULT);
 333 }
 334
 335 static int
 336 scpm_attach(device_t dev)
 337 {
 338
 339         bus_generic_probe(dev);
 340         bus_generic_attach(dev);
 341
 342         return (0);
 343 }
 344
 345 static int
 346 scpm_suspend(device_t dev)
 347 {
 348         int error;
 349
 350         error = bus_generic_suspend(dev);
 351         if (error != 0)
 352                 return (error);
 353
 354         return (scsuspend(dev));
 355 }
 356
 357 static int
 358 scpm_resume(device_t dev)
 359 {
 360
 361         scresume(dev);
 362
 363         return (bus_generic_resume(dev));
 364 }
 365
 366 static device_method_t scpm_methods[] = {
 367         DEVMETHOD(device_identify,      scpm_identify),
 368         DEVMETHOD(device_probe,         scpm_probe),
 369         DEVMETHOD(device_attach,        scpm_attach),
 370         DEVMETHOD(device_suspend,       scpm_suspend),
 371         DEVMETHOD(device_resume,        scpm_resume),
 372         { 0, 0 }
 373 };
 374
 375 static driver_t scpm_driver = {
 376         "scpm",
 377         scpm_methods,
 378         0
 379 };
 380
 381 DRIVER_MODULE(scpm, vgapm, scpm_driver, scpm_devclass, 0, 0);