wsdisplay.c revision 1.101
1 /* $NetBSD: wsdisplay.c,v 1.101 2006/10/01 19:28:44 elad Exp $ */ 2 3 /* 4 * Copyright (c) 1996, 1997 Christopher G. Demetriou. All rights reserved. 5 * 6 * Redistribution and use in source and binary forms, with or without 7 * modification, are permitted provided that the following conditions 8 * are met: 9 * 1. Redistributions of source code must retain the above copyright 10 * notice, this list of conditions and the following disclaimer. 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 * 3. All advertising materials mentioning features or use of this software 15 * must display the following acknowledgement: 16 * This product includes software developed by Christopher G. Demetriou 17 * for the NetBSD Project. 18 * 4. The name of the author may not be used to endorse or promote products 19 * derived from this software without specific prior written permission 20 * 21 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 22 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 23 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 24 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 25 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 26 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 27 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 28 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 29 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 30 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 31 */ 32 33 #include <sys/cdefs.h> 34 __KERNEL_RCSID(0, "$NetBSD: wsdisplay.c,v 1.101 2006/10/01 19:28:44 elad Exp $"); 35 36 #include "opt_wsdisplay_compat.h" 37 #include "opt_wsmsgattrs.h" 38 #include "opt_compat_netbsd.h" 39 #include "wskbd.h" 40 #include "wsmux.h" 41 #include "wsdisplay.h" 42 43 #include <sys/param.h> 44 #include <sys/conf.h> 45 #include <sys/device.h> 46 #include <sys/ioctl.h> 47 #include <sys/poll.h> 48 #include <sys/kernel.h> 49 #include <sys/proc.h> 50 #include <sys/malloc.h> 51 #include <sys/syslog.h> 52 #include <sys/systm.h> 53 #include <sys/tty.h> 54 #include <sys/signalvar.h> 55 #include <sys/errno.h> 56 #include <sys/fcntl.h> 57 #include <sys/vnode.h> 58 #include <sys/kauth.h> 59 60 #include <dev/wscons/wseventvar.h> 61 #include <dev/wscons/wsmuxvar.h> 62 #include <dev/wscons/wsconsio.h> 63 #include <dev/wscons/wsdisplayvar.h> 64 #include <dev/wscons/wsksymvar.h> 65 #include <dev/wscons/wsksymdef.h> 66 #include <dev/wscons/wsemulvar.h> 67 #include <dev/wscons/wscons_callbacks.h> 68 #include <dev/cons.h> 69 70 struct wsscreen_internal { 71 const struct wsdisplay_emulops *emulops; 72 void *emulcookie; 73 74 const struct wsscreen_descr *scrdata; 75 76 const struct wsemul_ops *wsemul; 77 void *wsemulcookie; 78 }; 79 80 struct wsscreen { 81 struct wsscreen_internal *scr_dconf; 82 83 struct tty *scr_tty; 84 int scr_hold_screen; /* hold tty output */ 85 86 int scr_flags; 87 #define SCR_OPEN 1 /* is it open? */ 88 #define SCR_WAITACTIVE 2 /* someone waiting on activation */ 89 #define SCR_GRAPHICS 4 /* graphics mode, no text (emulation) output */ 90 #define SCR_DUMBFB 8 /* in use as a dumb fb (iff SCR_GRAPHICS) */ 91 const struct wscons_syncops *scr_syncops; 92 void *scr_synccookie; 93 94 #ifdef WSDISPLAY_COMPAT_RAWKBD 95 int scr_rawkbd; 96 #endif 97 98 struct wsdisplay_softc *sc; 99 }; 100 101 struct wsscreen *wsscreen_attach(struct wsdisplay_softc *, int, 102 const char *, 103 const struct wsscreen_descr *, void *, 104 int, int, long); 105 void wsscreen_detach(struct wsscreen *); 106 int wsdisplay_addscreen(struct wsdisplay_softc *, int, const char *, const char *); 107 static void wsdisplay_shutdownhook(void *); 108 static void wsdisplay_addscreen_print(struct wsdisplay_softc *, int, int); 109 static void wsdisplay_closescreen(struct wsdisplay_softc *, struct wsscreen *); 110 int wsdisplay_delscreen(struct wsdisplay_softc *, int, int); 111 112 #define WSDISPLAY_MAXSCREEN 8 113 114 struct wsdisplay_softc { 115 struct device sc_dv; 116 117 const struct wsdisplay_accessops *sc_accessops; 118 void *sc_accesscookie; 119 120 const struct wsscreen_list *sc_scrdata; 121 #ifdef WSDISPLAY_SCROLLSUPPORT 122 struct wsdisplay_scroll_data sc_scroll_values; 123 #endif 124 125 struct wsscreen *sc_scr[WSDISPLAY_MAXSCREEN]; 126 int sc_focusidx; /* available only if sc_focus isn't null */ 127 struct wsscreen *sc_focus; 128 129 struct wseventvar evar; 130 131 int sc_isconsole; 132 133 int sc_flags; 134 #define SC_SWITCHPENDING 1 135 int sc_screenwanted, sc_oldscreen; /* valid with SC_SWITCHPENDING */ 136 137 #if NWSKBD > 0 138 struct wsevsrc *sc_input; 139 #ifdef WSDISPLAY_COMPAT_RAWKBD 140 int sc_rawkbd; 141 #endif 142 #endif /* NWSKBD > 0 */ 143 }; 144 145 #ifdef WSDISPLAY_SCROLLSUPPORT 146 147 struct wsdisplay_scroll_data wsdisplay_default_scroll_values = { 148 WSDISPLAY_SCROLL_DOALL, 149 25, 150 2, 151 }; 152 #endif 153 154 extern struct cfdriver wsdisplay_cd; 155 156 /* Autoconfiguration definitions. */ 157 static int wsdisplay_emul_match(struct device *, struct cfdata *, void *); 158 static void wsdisplay_emul_attach(struct device *, struct device *, void *); 159 static int wsdisplay_noemul_match(struct device *, struct cfdata *, void *); 160 static void wsdisplay_noemul_attach(struct device *, struct device *, void *); 161 162 CFATTACH_DECL(wsdisplay_emul, sizeof (struct wsdisplay_softc), 163 wsdisplay_emul_match, wsdisplay_emul_attach, NULL, NULL); 164 165 CFATTACH_DECL(wsdisplay_noemul, sizeof (struct wsdisplay_softc), 166 wsdisplay_noemul_match, wsdisplay_noemul_attach, NULL, NULL); 167 168 dev_type_open(wsdisplayopen); 169 dev_type_close(wsdisplayclose); 170 dev_type_read(wsdisplayread); 171 dev_type_write(wsdisplaywrite); 172 dev_type_ioctl(wsdisplayioctl); 173 dev_type_stop(wsdisplaystop); 174 dev_type_tty(wsdisplaytty); 175 dev_type_poll(wsdisplaypoll); 176 dev_type_mmap(wsdisplaymmap); 177 dev_type_kqfilter(wsdisplaykqfilter); 178 179 const struct cdevsw wsdisplay_cdevsw = { 180 wsdisplayopen, wsdisplayclose, wsdisplayread, wsdisplaywrite, 181 wsdisplayioctl, wsdisplaystop, wsdisplaytty, wsdisplaypoll, 182 wsdisplaymmap, wsdisplaykqfilter, D_TTY 183 }; 184 185 static void wsdisplaystart(struct tty *); 186 static int wsdisplayparam(struct tty *, struct termios *); 187 188 189 #define WSDISPLAYUNIT(dev) (minor(dev) >> 8) 190 #define WSDISPLAYSCREEN(dev) (minor(dev) & 0xff) 191 #define ISWSDISPLAYSTAT(dev) (WSDISPLAYSCREEN(dev) == 254) 192 #define ISWSDISPLAYCTL(dev) (WSDISPLAYSCREEN(dev) == 255) 193 #define WSDISPLAYMINOR(unit, screen) (((unit) << 8) | (screen)) 194 195 #define WSSCREEN_HAS_EMULATOR(scr) ((scr)->scr_dconf->wsemul != NULL) 196 #define WSSCREEN_HAS_TTY(scr) ((scr)->scr_tty != NULL) 197 198 static void wsdisplay_common_attach(struct wsdisplay_softc *sc, 199 int console, int kbdmux, const struct wsscreen_list *, 200 const struct wsdisplay_accessops *accessops, 201 void *accesscookie); 202 203 #ifdef WSDISPLAY_COMPAT_RAWKBD 204 int wsdisplay_update_rawkbd(struct wsdisplay_softc *, 205 struct wsscreen *); 206 #endif 207 208 static int wsdisplay_console_initted; 209 static int wsdisplay_console_attached; 210 static struct wsdisplay_softc *wsdisplay_console_device; 211 static struct wsscreen_internal wsdisplay_console_conf; 212 213 static int wsdisplay_getc_dummy(dev_t); 214 static void wsdisplay_pollc(dev_t, int); 215 216 static int wsdisplay_cons_pollmode; 217 static void (*wsdisplay_cons_kbd_pollc)(dev_t, int); 218 219 static struct consdev wsdisplay_cons = { 220 NULL, NULL, wsdisplay_getc_dummy, wsdisplay_cnputc, 221 wsdisplay_pollc, NULL, NULL, NULL, NODEV, CN_NORMAL 222 }; 223 224 #ifndef WSDISPLAY_DEFAULTSCREENS 225 # define WSDISPLAY_DEFAULTSCREENS 0 226 #endif 227 int wsdisplay_defaultscreens = WSDISPLAY_DEFAULTSCREENS; 228 229 int wsdisplay_switch1(void *, int, int); 230 int wsdisplay_switch2(void *, int, int); 231 int wsdisplay_switch3(void *, int, int); 232 233 int wsdisplay_clearonclose; 234 235 struct wsscreen * 236 wsscreen_attach(struct wsdisplay_softc *sc, int console, const char *emul, 237 const struct wsscreen_descr *type, void *cookie, int ccol, 238 int crow, long defattr) 239 { 240 struct wsscreen_internal *dconf; 241 struct wsscreen *scr; 242 243 scr = malloc(sizeof(struct wsscreen), M_DEVBUF, M_WAITOK); 244 if (!scr) 245 return (NULL); 246 247 if (console) { 248 dconf = &wsdisplay_console_conf; 249 /* 250 * If there's an emulation, tell it about the callback argument. 251 * The other stuff is already there. 252 */ 253 if (dconf->wsemul != NULL) 254 (*dconf->wsemul->attach)(1, 0, 0, 0, 0, scr, 0); 255 } else { /* not console */ 256 dconf = malloc(sizeof(struct wsscreen_internal), 257 M_DEVBUF, M_NOWAIT); 258 dconf->emulops = type->textops; 259 dconf->emulcookie = cookie; 260 if (dconf->emulops) { 261 dconf->wsemul = wsemul_pick(emul); 262 if (dconf->wsemul == NULL) { 263 free(dconf, M_DEVBUF); 264 free(scr, M_DEVBUF); 265 return (NULL); 266 } 267 dconf->wsemulcookie = 268 (*dconf->wsemul->attach)(0, type, cookie, 269 ccol, crow, scr, defattr); 270 } else 271 dconf->wsemul = NULL; 272 dconf->scrdata = type; 273 } 274 275 scr->scr_dconf = dconf; 276 277 scr->scr_tty = ttymalloc(); 278 tty_attach(scr->scr_tty); 279 scr->scr_hold_screen = 0; 280 if (WSSCREEN_HAS_EMULATOR(scr)) 281 scr->scr_flags = 0; 282 else 283 scr->scr_flags = SCR_GRAPHICS; 284 285 scr->scr_syncops = 0; 286 scr->sc = sc; 287 #ifdef WSDISPLAY_COMPAT_RAWKBD 288 scr->scr_rawkbd = 0; 289 #endif 290 return (scr); 291 } 292 293 void 294 wsscreen_detach(struct wsscreen *scr) 295 { 296 u_int ccol, crow; /* XXX */ 297 298 if (WSSCREEN_HAS_TTY(scr)) { 299 tty_detach(scr->scr_tty); 300 ttyfree(scr->scr_tty); 301 } 302 if (WSSCREEN_HAS_EMULATOR(scr)) 303 (*scr->scr_dconf->wsemul->detach)(scr->scr_dconf->wsemulcookie, 304 &ccol, &crow); 305 free(scr->scr_dconf, M_DEVBUF); 306 free(scr, M_DEVBUF); 307 } 308 309 const struct wsscreen_descr * 310 wsdisplay_screentype_pick(const struct wsscreen_list *scrdata, const char *name) 311 { 312 int i; 313 const struct wsscreen_descr *scr; 314 315 KASSERT(scrdata->nscreens > 0); 316 317 if (name == NULL) 318 return (scrdata->screens[0]); 319 320 for (i = 0; i < scrdata->nscreens; i++) { 321 scr = scrdata->screens[i]; 322 if (!strcmp(name, scr->name)) 323 return (scr); 324 } 325 326 return (0); 327 } 328 329 /* 330 * print info about attached screen 331 */ 332 static void 333 wsdisplay_addscreen_print(struct wsdisplay_softc *sc, int idx, int count) 334 { 335 printf("%s: screen %d", sc->sc_dv.dv_xname, idx); 336 if (count > 1) 337 printf("-%d", idx + (count-1)); 338 printf(" added (%s", sc->sc_scr[idx]->scr_dconf->scrdata->name); 339 if (WSSCREEN_HAS_EMULATOR(sc->sc_scr[idx])) { 340 printf(", %s emulation", 341 sc->sc_scr[idx]->scr_dconf->wsemul->name); 342 } 343 printf(")\n"); 344 } 345 346 int 347 wsdisplay_addscreen(struct wsdisplay_softc *sc, int idx, 348 const char *screentype, const char *emul) 349 { 350 const struct wsscreen_descr *scrdesc; 351 int error; 352 void *cookie; 353 int ccol, crow; 354 long defattr; 355 struct wsscreen *scr; 356 int s; 357 358 if (idx < 0 || idx >= WSDISPLAY_MAXSCREEN) 359 return (EINVAL); 360 if (sc->sc_scr[idx] != NULL) 361 return (EBUSY); 362 363 scrdesc = wsdisplay_screentype_pick(sc->sc_scrdata, screentype); 364 if (!scrdesc) 365 return (ENXIO); 366 error = (*sc->sc_accessops->alloc_screen)(sc->sc_accesscookie, 367 scrdesc, &cookie, &ccol, &crow, &defattr); 368 if (error) 369 return (error); 370 371 scr = wsscreen_attach(sc, 0, emul, scrdesc, 372 cookie, ccol, crow, defattr); 373 if (scr == NULL) { 374 (*sc->sc_accessops->free_screen)(sc->sc_accesscookie, 375 cookie); 376 return (ENXIO); 377 } 378 379 sc->sc_scr[idx] = scr; 380 381 /* if no screen has focus yet, activate the first we get */ 382 s = spltty(); 383 if (!sc->sc_focus) { 384 (*sc->sc_accessops->show_screen)(sc->sc_accesscookie, 385 scr->scr_dconf->emulcookie, 386 0, 0, 0); 387 sc->sc_focusidx = idx; 388 sc->sc_focus = scr; 389 } 390 splx(s); 391 return (0); 392 } 393 394 static void 395 wsdisplay_closescreen(struct wsdisplay_softc *sc, struct wsscreen *scr) 396 { 397 int maj, mn, idx; 398 399 /* hangup */ 400 if (WSSCREEN_HAS_TTY(scr)) { 401 struct tty *tp = scr->scr_tty; 402 (*tp->t_linesw->l_modem)(tp, 0); 403 } 404 405 /* locate the major number */ 406 maj = cdevsw_lookup_major(&wsdisplay_cdevsw); 407 /* locate the screen index */ 408 for (idx = 0; idx < WSDISPLAY_MAXSCREEN; idx++) 409 if (scr == sc->sc_scr[idx]) 410 break; 411 #ifdef DIAGNOSTIC 412 if (idx == WSDISPLAY_MAXSCREEN) 413 panic("wsdisplay_forceclose: bad screen"); 414 #endif 415 416 /* nuke the vnodes */ 417 mn = WSDISPLAYMINOR(device_unit(&sc->sc_dv), idx); 418 vdevgone(maj, mn, mn, VCHR); 419 } 420 421 #ifdef WSDISPLAY_SCROLLSUPPORT 422 void 423 wsdisplay_scroll(void *arg, int op) 424 { 425 struct wsdisplay_softc *sc = arg; 426 int lines; 427 428 if (op == WSDISPLAY_SCROLL_RESET) 429 lines = 0; 430 else { 431 lines = (op & WSDISPLAY_SCROLL_LOW) ? 432 sc->sc_scroll_values.slowlines : 433 sc->sc_scroll_values.fastlines; 434 if (op & WSDISPLAY_SCROLL_BACKWARD) 435 lines = -(lines); 436 } 437 438 if (sc->sc_accessops->scroll) { 439 (*sc->sc_accessops->scroll)(sc->sc_accesscookie, 440 sc->sc_focus->scr_dconf->emulcookie, lines); 441 } 442 } 443 #endif 444 445 int 446 wsdisplay_delscreen(struct wsdisplay_softc *sc, int idx, int flags) 447 { 448 struct wsscreen *scr; 449 int s; 450 void *cookie; 451 452 if (idx < 0 || idx >= WSDISPLAY_MAXSCREEN) 453 return (EINVAL); 454 if ((scr = sc->sc_scr[idx]) == NULL) 455 return (ENXIO); 456 457 if (scr->scr_dconf == &wsdisplay_console_conf || 458 scr->scr_syncops || 459 ((scr->scr_flags & SCR_OPEN) && !(flags & WSDISPLAY_DELSCR_FORCE))) 460 return(EBUSY); 461 462 wsdisplay_closescreen(sc, scr); 463 464 /* 465 * delete pointers, so neither device entries 466 * nor keyboard input can reference it anymore 467 */ 468 s = spltty(); 469 if (sc->sc_focus == scr) { 470 sc->sc_focus = 0; 471 #ifdef WSDISPLAY_COMPAT_RAWKBD 472 wsdisplay_update_rawkbd(sc, 0); 473 #endif 474 } 475 sc->sc_scr[idx] = 0; 476 splx(s); 477 478 /* 479 * Wake up processes waiting for the screen to 480 * be activated. Sleepers must check whether 481 * the screen still exists. 482 */ 483 if (scr->scr_flags & SCR_WAITACTIVE) 484 wakeup(scr); 485 486 /* save a reference to the graphics screen */ 487 cookie = scr->scr_dconf->emulcookie; 488 489 wsscreen_detach(scr); 490 491 (*sc->sc_accessops->free_screen)(sc->sc_accesscookie, 492 cookie); 493 494 printf("%s: screen %d deleted\n", sc->sc_dv.dv_xname, idx); 495 return (0); 496 } 497 498 /* 499 * Autoconfiguration functions. 500 */ 501 int 502 wsdisplay_emul_match(struct device *parent, struct cfdata *match, void *aux) 503 { 504 struct wsemuldisplaydev_attach_args *ap = aux; 505 506 if (match->wsemuldisplaydevcf_console != 507 WSEMULDISPLAYDEVCF_CONSOLE_UNK) { 508 /* 509 * If console-ness of device specified, either match 510 * exactly (at high priority), or fail. 511 */ 512 if (match->wsemuldisplaydevcf_console != 0 && 513 ap->console != 0) 514 return (10); 515 else 516 return (0); 517 } 518 519 /* If console-ness unspecified, it wins. */ 520 return (1); 521 } 522 523 void 524 wsdisplay_emul_attach(struct device *parent, struct device *self, void *aux) 525 { 526 struct wsdisplay_softc *sc = (struct wsdisplay_softc *)self; 527 struct wsemuldisplaydev_attach_args *ap = aux; 528 529 /* Don't allow more than one console to attach */ 530 if (wsdisplay_console_attached && ap->console) 531 ap->console = 0; 532 533 wsdisplay_common_attach(sc, ap->console, 534 device_cfdata(&sc->sc_dv)->wsemuldisplaydevcf_kbdmux, ap->scrdata, 535 ap->accessops, ap->accesscookie); 536 537 if (ap->console) { 538 int maj; 539 540 /* locate the major number */ 541 maj = cdevsw_lookup_major(&wsdisplay_cdevsw); 542 543 cn_tab->cn_dev = makedev(maj, WSDISPLAYMINOR(device_unit(self), 544 0)); 545 } 546 } 547 548 /* Print function (for parent devices). */ 549 int 550 wsemuldisplaydevprint(void *aux, const char *pnp) 551 { 552 #if 0 /* -Wunused */ 553 struct wsemuldisplaydev_attach_args *ap = aux; 554 #endif 555 556 if (pnp) 557 aprint_normal("wsdisplay at %s", pnp); 558 #if 0 /* don't bother; it's ugly */ 559 aprint_normal(" console %d", ap->console); 560 #endif 561 562 return (UNCONF); 563 } 564 565 int 566 wsdisplay_noemul_match(struct device *parent, struct cfdata *match, void *aux) 567 { 568 #if 0 /* -Wunused */ 569 struct wsdisplaydev_attach_args *ap = aux; 570 #endif 571 572 /* Always match. */ 573 return (1); 574 } 575 576 void 577 wsdisplay_noemul_attach(struct device *parent, struct device *self, void *aux) 578 { 579 struct wsdisplay_softc *sc = (struct wsdisplay_softc *)self; 580 struct wsdisplaydev_attach_args *ap = aux; 581 582 wsdisplay_common_attach(sc, 0, 583 device_cfdata(&sc->sc_dv)->wsemuldisplaydevcf_kbdmux, NULL, 584 ap->accessops, ap->accesscookie); 585 } 586 587 /* Print function (for parent devices). */ 588 int 589 wsdisplaydevprint(void *aux, const char *pnp) 590 { 591 #if 0 /* -Wunused */ 592 struct wsdisplaydev_attach_args *ap = aux; 593 #endif 594 595 if (pnp) 596 aprint_normal("wsdisplay at %s", pnp); 597 598 return (UNCONF); 599 } 600 601 static void 602 wsdisplay_common_attach(struct wsdisplay_softc *sc, int console, int kbdmux, 603 const struct wsscreen_list *scrdata, 604 const struct wsdisplay_accessops *accessops, 605 void *accesscookie) 606 { 607 static int hookset; 608 int i, start=0; 609 #if NWSKBD > 0 610 struct wsevsrc *kme; 611 #if NWSMUX > 0 612 struct wsmux_softc *mux; 613 614 if (kbdmux >= 0) 615 mux = wsmux_getmux(kbdmux); 616 else 617 mux = wsmux_create("dmux", device_unit(&sc->sc_dv)); 618 /* XXX panic()ing isn't nice, but attach cannot fail */ 619 if (mux == NULL) 620 panic("wsdisplay_common_attach: no memory"); 621 sc->sc_input = &mux->sc_base; 622 mux->sc_base.me_dispdv = &sc->sc_dv; 623 printf(" kbdmux %d", kbdmux); 624 #else 625 if (kbdmux >= 0) 626 printf(" (kbdmux ignored)"); 627 #endif 628 #endif 629 630 sc->sc_isconsole = console; 631 632 if (console) { 633 KASSERT(wsdisplay_console_initted); 634 KASSERT(wsdisplay_console_device == NULL); 635 636 sc->sc_scr[0] = wsscreen_attach(sc, 1, 0, 0, 0, 0, 0, 0); 637 wsdisplay_console_device = sc; 638 639 printf(": console (%s, %s emulation)", 640 wsdisplay_console_conf.scrdata->name, 641 wsdisplay_console_conf.wsemul->name); 642 643 #if NWSKBD > 0 644 kme = wskbd_set_console_display(&sc->sc_dv, sc->sc_input); 645 if (kme != NULL) 646 printf(", using %s", kme->me_dv.dv_xname); 647 #if NWSMUX == 0 648 sc->sc_input = kme; 649 #endif 650 #endif 651 652 sc->sc_focusidx = 0; 653 sc->sc_focus = sc->sc_scr[0]; 654 start = 1; 655 656 wsdisplay_console_attached = 1; 657 } 658 printf("\n"); 659 660 #if NWSKBD > 0 && NWSMUX > 0 661 wsmux_set_display(mux, &sc->sc_dv); 662 #endif 663 664 sc->sc_accessops = accessops; 665 sc->sc_accesscookie = accesscookie; 666 sc->sc_scrdata = scrdata; 667 668 #ifdef WSDISPLAY_SCROLLSUPPORT 669 sc->sc_scroll_values = wsdisplay_default_scroll_values; 670 #endif 671 672 /* 673 * Set up a number of virtual screens if wanted. The 674 * WSDISPLAYIO_ADDSCREEN ioctl is more flexible, so this code 675 * is for special cases like installation kernels. 676 */ 677 for (i = start; i < wsdisplay_defaultscreens; i++) { 678 if (wsdisplay_addscreen(sc, i, 0, 0)) 679 break; 680 } 681 682 if (i > start) 683 wsdisplay_addscreen_print(sc, start, i-start); 684 685 if (hookset == 0) 686 shutdownhook_establish(wsdisplay_shutdownhook, NULL); 687 hookset = 1; 688 } 689 690 void 691 wsdisplay_cnattach(const struct wsscreen_descr *type, void *cookie, 692 int ccol, int crow, long defattr) 693 { 694 const struct wsemul_ops *wsemul; 695 696 KASSERT(!wsdisplay_console_initted); 697 KASSERT(type->nrows > 0); 698 KASSERT(type->ncols > 0); 699 KASSERT(crow < type->nrows); 700 KASSERT(ccol < type->ncols); 701 702 wsdisplay_console_conf.emulops = type->textops; 703 wsdisplay_console_conf.emulcookie = cookie; 704 wsdisplay_console_conf.scrdata = type; 705 706 wsemul = wsemul_pick(0); /* default */ 707 wsdisplay_console_conf.wsemul = wsemul; 708 wsdisplay_console_conf.wsemulcookie = (*wsemul->cnattach)(type, cookie, 709 ccol, crow, 710 defattr); 711 712 cn_tab = &wsdisplay_cons; 713 wsdisplay_console_initted = 1; 714 } 715 716 /* 717 * Tty and cdevsw functions. 718 */ 719 int 720 wsdisplayopen(dev_t dev, int flag, int mode, struct lwp *l) 721 { 722 struct wsdisplay_softc *sc; 723 struct tty *tp; 724 int newopen, error; 725 struct wsscreen *scr; 726 727 sc = device_lookup(&wsdisplay_cd, WSDISPLAYUNIT(dev)); 728 if (sc == NULL) /* make sure it was attached */ 729 return (ENXIO); 730 731 if (ISWSDISPLAYSTAT(dev)) { 732 wsevent_init(&sc->evar, l->l_proc); 733 return (0); 734 } 735 736 if (ISWSDISPLAYCTL(dev)) 737 return (0); 738 739 if (WSDISPLAYSCREEN(dev) >= WSDISPLAY_MAXSCREEN) 740 return (ENXIO); 741 if ((scr = sc->sc_scr[WSDISPLAYSCREEN(dev)]) == NULL) 742 return (ENXIO); 743 744 if (WSSCREEN_HAS_TTY(scr)) { 745 tp = scr->scr_tty; 746 tp->t_oproc = wsdisplaystart; 747 tp->t_param = wsdisplayparam; 748 tp->t_dev = dev; 749 newopen = (tp->t_state & TS_ISOPEN) == 0; 750 751 if (kauth_authorize_device_tty(l->l_cred, 752 KAUTH_DEVICE_TTY_OPEN, tp)) 753 return (EBUSY); 754 755 if (newopen) { 756 ttychars(tp); 757 tp->t_iflag = TTYDEF_IFLAG; 758 tp->t_oflag = TTYDEF_OFLAG; 759 tp->t_cflag = TTYDEF_CFLAG; 760 tp->t_lflag = TTYDEF_LFLAG; 761 tp->t_ispeed = tp->t_ospeed = TTYDEF_SPEED; 762 wsdisplayparam(tp, &tp->t_termios); 763 ttsetwater(tp); 764 } 765 tp->t_state |= TS_CARR_ON; 766 767 error = ((*tp->t_linesw->l_open)(dev, tp)); 768 if (error) 769 return (error); 770 771 if (newopen && WSSCREEN_HAS_EMULATOR(scr)) { 772 /* set window sizes as appropriate, and reset 773 the emulation */ 774 tp->t_winsize.ws_row = scr->scr_dconf->scrdata->nrows; 775 tp->t_winsize.ws_col = scr->scr_dconf->scrdata->ncols; 776 777 /* wsdisplay_set_emulation() */ 778 } 779 } 780 781 scr->scr_flags |= SCR_OPEN; 782 return (0); 783 } 784 785 int 786 wsdisplayclose(dev_t dev, int flag, int mode, struct lwp *l) 787 { 788 struct wsdisplay_softc *sc; 789 struct tty *tp; 790 struct wsscreen *scr; 791 792 sc = device_lookup(&wsdisplay_cd, WSDISPLAYUNIT(dev)); 793 794 if (ISWSDISPLAYSTAT(dev)) { 795 wsevent_fini(&sc->evar); 796 return (0); 797 } 798 799 if (ISWSDISPLAYCTL(dev)) 800 return (0); 801 802 if ((scr = sc->sc_scr[WSDISPLAYSCREEN(dev)]) == NULL) 803 return (0); 804 805 if (WSSCREEN_HAS_TTY(scr)) { 806 if (scr->scr_hold_screen) { 807 int s; 808 809 /* XXX RESET KEYBOARD LEDS, etc. */ 810 s = spltty(); /* avoid conflict with keyboard */ 811 wsdisplay_kbdholdscreen((struct device *)sc, 0); 812 splx(s); 813 } 814 tp = scr->scr_tty; 815 (*tp->t_linesw->l_close)(tp, flag); 816 ttyclose(tp); 817 } 818 819 if (scr->scr_syncops) 820 (*scr->scr_syncops->destroy)(scr->scr_synccookie); 821 822 if (WSSCREEN_HAS_EMULATOR(scr)) { 823 scr->scr_flags &= ~SCR_GRAPHICS; 824 (*scr->scr_dconf->wsemul->reset)(scr->scr_dconf->wsemulcookie, 825 WSEMUL_RESET); 826 if (wsdisplay_clearonclose) 827 (*scr->scr_dconf->wsemul->reset) 828 (scr->scr_dconf->wsemulcookie, 829 WSEMUL_CLEARSCREEN); 830 } 831 832 #ifdef WSDISPLAY_COMPAT_RAWKBD 833 if (scr->scr_rawkbd) { 834 int kbmode = WSKBD_TRANSLATED; 835 (void)wsdisplay_internal_ioctl(sc, scr, WSKBDIO_SETMODE, 836 (caddr_t)&kbmode, 0, l); 837 } 838 #endif 839 840 scr->scr_flags &= ~SCR_OPEN; 841 842 return (0); 843 } 844 845 int 846 wsdisplayread(dev_t dev, struct uio *uio, int flag) 847 { 848 struct wsdisplay_softc *sc; 849 struct tty *tp; 850 struct wsscreen *scr; 851 int error; 852 853 sc = device_lookup(&wsdisplay_cd, WSDISPLAYUNIT(dev)); 854 855 if (ISWSDISPLAYSTAT(dev)) { 856 error = wsevent_read(&sc->evar, uio, flag); 857 return (error); 858 } 859 860 if (ISWSDISPLAYCTL(dev)) 861 return (0); 862 863 if ((scr = sc->sc_scr[WSDISPLAYSCREEN(dev)]) == NULL) 864 return (ENXIO); 865 866 if (!WSSCREEN_HAS_TTY(scr)) 867 return (ENODEV); 868 869 tp = scr->scr_tty; 870 return ((*tp->t_linesw->l_read)(tp, uio, flag)); 871 } 872 873 int 874 wsdisplaywrite(dev_t dev, struct uio *uio, int flag) 875 { 876 struct wsdisplay_softc *sc; 877 struct tty *tp; 878 struct wsscreen *scr; 879 880 sc = device_lookup(&wsdisplay_cd, WSDISPLAYUNIT(dev)); 881 882 if (ISWSDISPLAYSTAT(dev)) { 883 return (0); 884 } 885 886 if (ISWSDISPLAYCTL(dev)) 887 return (0); 888 889 if ((scr = sc->sc_scr[WSDISPLAYSCREEN(dev)]) == NULL) 890 return (ENXIO); 891 892 if (!WSSCREEN_HAS_TTY(scr)) 893 return (ENODEV); 894 895 tp = scr->scr_tty; 896 return ((*tp->t_linesw->l_write)(tp, uio, flag)); 897 } 898 899 int 900 wsdisplaypoll(dev_t dev, int events, struct lwp *l) 901 { 902 struct wsdisplay_softc *sc; 903 struct tty *tp; 904 struct wsscreen *scr; 905 906 sc = device_lookup(&wsdisplay_cd, WSDISPLAYUNIT(dev)); 907 908 if (ISWSDISPLAYSTAT(dev)) 909 return (wsevent_poll(&sc->evar, events, l)); 910 911 if (ISWSDISPLAYCTL(dev)) 912 return (0); 913 914 if ((scr = sc->sc_scr[WSDISPLAYSCREEN(dev)]) == NULL) 915 return (POLLHUP); 916 917 if (!WSSCREEN_HAS_TTY(scr)) 918 return (POLLERR); 919 920 tp = scr->scr_tty; 921 return ((*tp->t_linesw->l_poll)(tp, events, l)); 922 } 923 924 int 925 wsdisplaykqfilter(dev, kn) 926 dev_t dev; 927 struct knote *kn; 928 { 929 struct wsdisplay_softc *sc = 930 device_lookup(&wsdisplay_cd, WSDISPLAYUNIT(dev)); 931 struct wsscreen *scr; 932 933 if (ISWSDISPLAYCTL(dev)) 934 return (1); 935 936 if ((scr = sc->sc_scr[WSDISPLAYSCREEN(dev)]) == NULL) 937 return (1); 938 939 940 if (WSSCREEN_HAS_TTY(scr)) 941 return (ttykqfilter(dev, kn)); 942 else 943 return (1); 944 } 945 946 struct tty * 947 wsdisplaytty(dev_t dev) 948 { 949 struct wsdisplay_softc *sc; 950 struct wsscreen *scr; 951 952 sc = device_lookup(&wsdisplay_cd, WSDISPLAYUNIT(dev)); 953 954 if (ISWSDISPLAYSTAT(dev)) 955 panic("wsdisplaytty() on status device"); 956 957 if (ISWSDISPLAYCTL(dev)) 958 panic("wsdisplaytty() on ctl device"); 959 960 if ((scr = sc->sc_scr[WSDISPLAYSCREEN(dev)]) == NULL) 961 return NULL; 962 963 return (scr->scr_tty); 964 } 965 966 int 967 wsdisplayioctl(dev_t dev, u_long cmd, caddr_t data, int flag, struct lwp *l) 968 { 969 struct wsdisplay_softc *sc; 970 struct tty *tp; 971 int error; 972 struct wsscreen *scr; 973 974 sc = device_lookup(&wsdisplay_cd, WSDISPLAYUNIT(dev)); 975 976 #ifdef WSDISPLAY_COMPAT_USL 977 error = wsdisplay_usl_ioctl1(sc, cmd, data, flag, l); 978 if (error != EPASSTHROUGH) 979 return (error); 980 #endif 981 982 if (ISWSDISPLAYSTAT(dev)) 983 return (wsdisplay_stat_ioctl(sc, cmd, data, flag, l)); 984 985 if (ISWSDISPLAYCTL(dev)) 986 return (wsdisplay_cfg_ioctl(sc, cmd, data, flag, l)); 987 988 if ((scr = sc->sc_scr[WSDISPLAYSCREEN(dev)]) == NULL) 989 return (ENXIO); 990 991 if (WSSCREEN_HAS_TTY(scr)) { 992 tp = scr->scr_tty; 993 994 /* printf("disc\n"); */ 995 /* do the line discipline ioctls first */ 996 error = (*tp->t_linesw->l_ioctl)(tp, cmd, data, flag, l); 997 if (error != EPASSTHROUGH) 998 return (error); 999 1000 /* printf("tty\n"); */ 1001 /* then the tty ioctls */ 1002 error = ttioctl(tp, cmd, data, flag, l); 1003 if (error != EPASSTHROUGH) 1004 return (error); 1005 } 1006 1007 #ifdef WSDISPLAY_COMPAT_USL 1008 error = wsdisplay_usl_ioctl2(sc, scr, cmd, data, flag, l); 1009 if (error != EPASSTHROUGH) 1010 return (error); 1011 #endif 1012 1013 return (wsdisplay_internal_ioctl(sc, scr, cmd, data, flag, l)); 1014 } 1015 1016 int 1017 wsdisplay_param(struct device *dev, u_long cmd, struct wsdisplay_param *dp) 1018 { 1019 struct wsdisplay_softc *sc = (struct wsdisplay_softc *)dev; 1020 return ((*sc->sc_accessops->ioctl)(sc->sc_accesscookie, 1021 sc->sc_focus->scr_dconf->emulcookie, 1022 cmd, (caddr_t)dp, 0, NULL)); 1023 } 1024 1025 int 1026 wsdisplay_internal_ioctl(struct wsdisplay_softc *sc, struct wsscreen *scr, 1027 u_long cmd, caddr_t data, int flag, struct lwp *l) 1028 { 1029 int error; 1030 char namebuf[16]; 1031 struct wsdisplay_font fd; 1032 #ifdef WSDISPLAY_SCROLLSUPPORT 1033 struct wsdisplay_scroll_data *ksdp, *usdp; 1034 #endif 1035 1036 #if NWSKBD > 0 1037 struct wsevsrc *inp; 1038 1039 #ifdef WSDISPLAY_COMPAT_RAWKBD 1040 switch (cmd) { 1041 case WSKBDIO_SETMODE: 1042 scr->scr_rawkbd = (*(int *)data == WSKBD_RAW); 1043 return (wsdisplay_update_rawkbd(sc, scr)); 1044 case WSKBDIO_GETMODE: 1045 *(int *)data = (scr->scr_rawkbd ? 1046 WSKBD_RAW : WSKBD_TRANSLATED); 1047 return (0); 1048 } 1049 #endif 1050 inp = sc->sc_input; 1051 if (inp == NULL) 1052 return (ENXIO); 1053 error = wsevsrc_display_ioctl(inp, cmd, data, flag, l); 1054 if (error != EPASSTHROUGH) 1055 return (error); 1056 #endif /* NWSKBD > 0 */ 1057 1058 switch (cmd) { 1059 case WSDISPLAYIO_GMODE: 1060 if (scr->scr_flags & SCR_GRAPHICS) { 1061 if (scr->scr_flags & SCR_DUMBFB) 1062 *(u_int *)data = WSDISPLAYIO_MODE_DUMBFB; 1063 else 1064 *(u_int *)data = WSDISPLAYIO_MODE_MAPPED; 1065 } else 1066 *(u_int *)data = WSDISPLAYIO_MODE_EMUL; 1067 return (0); 1068 1069 case WSDISPLAYIO_SMODE: 1070 #define d (*(int *)data) 1071 if (d != WSDISPLAYIO_MODE_EMUL && 1072 d != WSDISPLAYIO_MODE_MAPPED && 1073 d != WSDISPLAYIO_MODE_DUMBFB) 1074 return (EINVAL); 1075 1076 if (WSSCREEN_HAS_EMULATOR(scr)) { 1077 scr->scr_flags &= ~SCR_GRAPHICS; 1078 if (d == WSDISPLAYIO_MODE_MAPPED || 1079 d == WSDISPLAYIO_MODE_DUMBFB) 1080 scr->scr_flags |= SCR_GRAPHICS | 1081 ((d == WSDISPLAYIO_MODE_DUMBFB) ? SCR_DUMBFB : 0); 1082 } else if (d == WSDISPLAYIO_MODE_EMUL) 1083 return (EINVAL); 1084 1085 (void)(*sc->sc_accessops->ioctl)(sc->sc_accesscookie, 1086 scr->scr_dconf->emulcookie, cmd, data, flag, l); 1087 1088 return (0); 1089 #undef d 1090 1091 #ifdef WSDISPLAY_SCROLLSUPPORT 1092 #define SETSCROLLLINES(dstp, srcp, dfltp) \ 1093 do { \ 1094 (dstp)->fastlines = ((srcp)->which & \ 1095 WSDISPLAY_SCROLL_DOFASTLINES) ? \ 1096 (srcp)->fastlines : (dfltp)->fastlines; \ 1097 (dstp)->slowlines = ((srcp)->which & \ 1098 WSDISPLAY_SCROLL_DOSLOWLINES) ? \ 1099 (srcp)->slowlines : (dfltp)->slowlines; \ 1100 (dstp)->which = WSDISPLAY_SCROLL_DOALL; \ 1101 } while (0) 1102 1103 1104 case WSDISPLAYIO_DSSCROLL: 1105 usdp = (struct wsdisplay_scroll_data *)data; 1106 ksdp = &sc->sc_scroll_values; 1107 SETSCROLLLINES(ksdp, usdp, ksdp); 1108 return (0); 1109 1110 case WSDISPLAYIO_DGSCROLL: 1111 usdp = (struct wsdisplay_scroll_data *)data; 1112 ksdp = &sc->sc_scroll_values; 1113 SETSCROLLLINES(usdp, ksdp, ksdp); 1114 return (0); 1115 #else 1116 case WSDISPLAYIO_DSSCROLL: 1117 case WSDISPLAYIO_DGSCROLL: 1118 return ENODEV; 1119 #endif 1120 1121 case WSDISPLAYIO_SFONT: 1122 #define d ((struct wsdisplay_usefontdata *)data) 1123 if (!sc->sc_accessops->load_font) 1124 return (EINVAL); 1125 if (d->name) { 1126 error = copyinstr(d->name, namebuf, sizeof(namebuf), 0); 1127 if (error) 1128 return (error); 1129 fd.name = namebuf; 1130 } else 1131 fd.name = 0; 1132 fd.data = 0; 1133 error = (*sc->sc_accessops->load_font)(sc->sc_accesscookie, 1134 scr->scr_dconf->emulcookie, &fd); 1135 if (!error && WSSCREEN_HAS_EMULATOR(scr)) 1136 (*scr->scr_dconf->wsemul->reset) 1137 (scr->scr_dconf->wsemulcookie, WSEMUL_SYNCFONT); 1138 return (error); 1139 #undef d 1140 1141 #ifdef WSDISPLAY_CUSTOM_OUTPUT 1142 case WSDISPLAYIO_GMSGATTRS: 1143 #define d ((struct wsdisplay_msgattrs *)data) 1144 (*scr->scr_dconf->wsemul->getmsgattrs) 1145 (scr->scr_dconf->wsemulcookie, d); 1146 return (0); 1147 #undef d 1148 1149 case WSDISPLAYIO_SMSGATTRS: { 1150 #define d ((struct wsdisplay_msgattrs *)data) 1151 int i; 1152 for (i = 0; i < WSDISPLAY_MAXSCREEN; i++) 1153 if (sc->sc_scr[i] != NULL) 1154 (*sc->sc_scr[i]->scr_dconf->wsemul->setmsgattrs) 1155 (sc->sc_scr[i]->scr_dconf->wsemulcookie, 1156 sc->sc_scr[i]->scr_dconf->scrdata, 1157 d); 1158 } 1159 return (0); 1160 #undef d 1161 #else 1162 case WSDISPLAYIO_GMSGATTRS: 1163 case WSDISPLAYIO_SMSGATTRS: 1164 return (ENODEV); 1165 #endif 1166 } 1167 1168 /* check ioctls for display */ 1169 return ((*sc->sc_accessops->ioctl)(sc->sc_accesscookie, 1170 scr->scr_dconf->emulcookie, cmd, data, flag, l)); 1171 } 1172 1173 int 1174 wsdisplay_stat_ioctl(struct wsdisplay_softc *sc, u_long cmd, caddr_t data, 1175 int flag, struct lwp *l) 1176 { 1177 switch (cmd) { 1178 case WSDISPLAYIO_GETACTIVESCREEN: 1179 *(int*)data = wsdisplay_getactivescreen(sc); 1180 return (0); 1181 } 1182 1183 return (EPASSTHROUGH); 1184 } 1185 1186 int 1187 wsdisplay_cfg_ioctl(struct wsdisplay_softc *sc, u_long cmd, caddr_t data, 1188 int flag, struct lwp *l) 1189 { 1190 int error; 1191 char *type, typebuf[16], *emul, emulbuf[16]; 1192 void *tbuf; 1193 u_int fontsz; 1194 #if defined(COMPAT_14) && NWSKBD > 0 1195 struct wsmux_device wsmuxdata; 1196 #endif 1197 #if NWSKBD > 0 1198 struct wsevsrc *inp; 1199 #endif 1200 1201 switch (cmd) { 1202 case WSDISPLAYIO_ADDSCREEN: 1203 #define d ((struct wsdisplay_addscreendata *)data) 1204 if (d->screentype) { 1205 error = copyinstr(d->screentype, typebuf, 1206 sizeof(typebuf), 0); 1207 if (error) 1208 return (error); 1209 type = typebuf; 1210 } else 1211 type = 0; 1212 if (d->emul) { 1213 error = copyinstr(d->emul, emulbuf, sizeof(emulbuf),0); 1214 if (error) 1215 return (error); 1216 emul = emulbuf; 1217 } else 1218 emul = 0; 1219 1220 if ((error = wsdisplay_addscreen(sc, d->idx, type, emul)) == 0) 1221 wsdisplay_addscreen_print(sc, d->idx, 0); 1222 return (error); 1223 #undef d 1224 case WSDISPLAYIO_DELSCREEN: 1225 #define d ((struct wsdisplay_delscreendata *)data) 1226 return (wsdisplay_delscreen(sc, d->idx, d->flags)); 1227 #undef d 1228 case WSDISPLAYIO_LDFONT: 1229 #define d ((struct wsdisplay_font *)data) 1230 if (!sc->sc_accessops->load_font) 1231 return (EINVAL); 1232 if (d->name) { 1233 error = copyinstr(d->name, typebuf, sizeof(typebuf), 0); 1234 if (error) 1235 return (error); 1236 d->name = typebuf; 1237 } else 1238 d->name = "loaded"; /* ??? */ 1239 fontsz = d->fontheight * d->stride * d->numchars; 1240 if (fontsz > WSDISPLAY_MAXFONTSZ) 1241 return (EINVAL); 1242 1243 tbuf = malloc(fontsz, M_DEVBUF, M_WAITOK); 1244 error = copyin(d->data, tbuf, fontsz); 1245 if (error) { 1246 free(tbuf, M_DEVBUF); 1247 return (error); 1248 } 1249 d->data = tbuf; 1250 error = 1251 (*sc->sc_accessops->load_font)(sc->sc_accesscookie, 0, d); 1252 free(tbuf, M_DEVBUF); 1253 #undef d 1254 return (error); 1255 1256 #if NWSKBD > 0 1257 #ifdef COMPAT_14 1258 case _O_WSDISPLAYIO_SETKEYBOARD: 1259 #define d ((struct wsdisplay_kbddata *)data) 1260 inp = sc->sc_input; 1261 if (inp == NULL) 1262 return (ENXIO); 1263 switch (d->op) { 1264 case _O_WSDISPLAY_KBD_ADD: 1265 if (d->idx == -1) { 1266 d->idx = wskbd_pickfree(); 1267 if (d->idx == -1) 1268 return (ENXIO); 1269 } 1270 wsmuxdata.type = WSMUX_KBD; 1271 wsmuxdata.idx = d->idx; 1272 return (wsevsrc_ioctl(inp, WSMUX_ADD_DEVICE, 1273 &wsmuxdata, flag, l)); 1274 case _O_WSDISPLAY_KBD_DEL: 1275 wsmuxdata.type = WSMUX_KBD; 1276 wsmuxdata.idx = d->idx; 1277 return (wsevsrc_ioctl(inp, WSMUX_REMOVE_DEVICE, 1278 &wsmuxdata, flag, l)); 1279 default: 1280 return (EINVAL); 1281 } 1282 #undef d 1283 #endif 1284 1285 case WSMUXIO_ADD_DEVICE: 1286 #define d ((struct wsmux_device *)data) 1287 if (d->idx == -1 && d->type == WSMUX_KBD) 1288 d->idx = wskbd_pickfree(); 1289 #undef d 1290 /* fall into */ 1291 case WSMUXIO_INJECTEVENT: 1292 case WSMUXIO_REMOVE_DEVICE: 1293 case WSMUXIO_LIST_DEVICES: 1294 inp = sc->sc_input; 1295 if (inp == NULL) 1296 return (ENXIO); 1297 return (wsevsrc_ioctl(inp, cmd, data, flag, l)); 1298 #endif /* NWSKBD > 0 */ 1299 1300 } 1301 return (EPASSTHROUGH); 1302 } 1303 1304 int 1305 wsdisplay_stat_inject(struct device *dev, u_int type, int value) 1306 { 1307 struct wsdisplay_softc *sc = (struct wsdisplay_softc *) dev; 1308 struct wseventvar *evar; 1309 struct wscons_event event; 1310 1311 evar = &sc->evar; 1312 1313 if (evar == NULL) 1314 return (0); 1315 1316 if (evar->q == NULL) 1317 return (1); 1318 1319 event.type = type; 1320 event.value = value; 1321 if (wsevent_inject(evar, &event, 1) != 0) { 1322 log(LOG_WARNING, "wsdisplay: event queue overflow\n"); 1323 return (1); 1324 } 1325 1326 return (0); 1327 } 1328 1329 paddr_t 1330 wsdisplaymmap(dev_t dev, off_t offset, int prot) 1331 { 1332 struct wsdisplay_softc *sc = 1333 device_lookup(&wsdisplay_cd, WSDISPLAYUNIT(dev)); 1334 struct wsscreen *scr; 1335 1336 if (ISWSDISPLAYSTAT(dev)) 1337 return (-1); 1338 1339 if (ISWSDISPLAYCTL(dev)) 1340 return (-1); 1341 1342 if ((scr = sc->sc_scr[WSDISPLAYSCREEN(dev)]) == NULL) 1343 return (-1); 1344 1345 if (!(scr->scr_flags & SCR_GRAPHICS)) 1346 return (-1); 1347 1348 /* pass mmap to display */ 1349 return ((*sc->sc_accessops->mmap)(sc->sc_accesscookie, 1350 scr->scr_dconf->emulcookie, offset, prot)); 1351 } 1352 1353 void 1354 wsdisplaystart(struct tty *tp) 1355 { 1356 struct wsdisplay_softc *sc; 1357 struct wsscreen *scr; 1358 int s, n; 1359 u_char *tbuf; 1360 1361 s = spltty(); 1362 if (tp->t_state & (TS_TIMEOUT | TS_BUSY | TS_TTSTOP)) { 1363 splx(s); 1364 return; 1365 } 1366 sc = device_lookup(&wsdisplay_cd, WSDISPLAYUNIT(tp->t_dev)); 1367 if ((scr = sc->sc_scr[WSDISPLAYSCREEN(tp->t_dev)]) == NULL) { 1368 splx(s); 1369 return; 1370 } 1371 1372 if (scr->scr_hold_screen) { 1373 tp->t_state |= TS_TIMEOUT; 1374 splx(s); 1375 return; 1376 } 1377 tp->t_state |= TS_BUSY; 1378 splx(s); 1379 1380 /* 1381 * Drain output from ring buffer. 1382 * The output will normally be in one contiguous chunk, but when the 1383 * ring wraps, it will be in two pieces.. one at the end of the ring, 1384 * the other at the start. For performance, rather than loop here, 1385 * we output one chunk, see if there's another one, and if so, output 1386 * it too. 1387 */ 1388 1389 n = ndqb(&tp->t_outq, 0); 1390 tbuf = tp->t_outq.c_cf; 1391 1392 if (!(scr->scr_flags & SCR_GRAPHICS)) { 1393 KASSERT(WSSCREEN_HAS_EMULATOR(scr)); 1394 (*scr->scr_dconf->wsemul->output)(scr->scr_dconf->wsemulcookie, 1395 tbuf, n, 0); 1396 } 1397 ndflush(&tp->t_outq, n); 1398 1399 if ((n = ndqb(&tp->t_outq, 0)) > 0) { 1400 tbuf = tp->t_outq.c_cf; 1401 1402 if (!(scr->scr_flags & SCR_GRAPHICS)) { 1403 KASSERT(WSSCREEN_HAS_EMULATOR(scr)); 1404 (*scr->scr_dconf->wsemul->output) 1405 (scr->scr_dconf->wsemulcookie, tbuf, n, 0); 1406 } 1407 ndflush(&tp->t_outq, n); 1408 } 1409 1410 s = spltty(); 1411 tp->t_state &= ~TS_BUSY; 1412 /* Come back if there's more to do */ 1413 if (tp->t_outq.c_cc) { 1414 tp->t_state |= TS_TIMEOUT; 1415 callout_reset(&tp->t_rstrt_ch, (hz > 128) ? (hz / 128) : 1, 1416 ttrstrt, tp); 1417 } 1418 if (tp->t_outq.c_cc <= tp->t_lowat) { 1419 if (tp->t_state&TS_ASLEEP) { 1420 tp->t_state &= ~TS_ASLEEP; 1421 wakeup(&tp->t_outq); 1422 } 1423 selwakeup(&tp->t_wsel); 1424 } 1425 splx(s); 1426 } 1427 1428 void 1429 wsdisplaystop(struct tty *tp, int flag) 1430 { 1431 int s; 1432 1433 s = spltty(); 1434 if (ISSET(tp->t_state, TS_BUSY)) 1435 if (!ISSET(tp->t_state, TS_TTSTOP)) 1436 SET(tp->t_state, TS_FLUSH); 1437 splx(s); 1438 } 1439 1440 /* Set line parameters. */ 1441 int 1442 wsdisplayparam(struct tty *tp, struct termios *t) 1443 { 1444 1445 tp->t_ispeed = t->c_ispeed; 1446 tp->t_ospeed = t->c_ospeed; 1447 tp->t_cflag = t->c_cflag; 1448 return 0; 1449 } 1450 1451 /* 1452 * Callbacks for the emulation code. 1453 */ 1454 void 1455 wsdisplay_emulbell(void *v) 1456 { 1457 struct wsscreen *scr = v; 1458 1459 if (scr == NULL) /* console, before real attach */ 1460 return; 1461 1462 if (scr->scr_flags & SCR_GRAPHICS) /* can this happen? */ 1463 return; 1464 1465 (void) wsdisplay_internal_ioctl(scr->sc, scr, WSKBDIO_BELL, NULL, 1466 FWRITE, NULL); 1467 } 1468 1469 void 1470 wsdisplay_emulinput(void *v, const u_char *data, u_int count) 1471 { 1472 struct wsscreen *scr = v; 1473 struct tty *tp; 1474 1475 if (v == NULL) /* console, before real attach */ 1476 return; 1477 1478 if (scr->scr_flags & SCR_GRAPHICS) /* XXX can't happen */ 1479 return; 1480 if (!WSSCREEN_HAS_TTY(scr)) 1481 return; 1482 1483 tp = scr->scr_tty; 1484 while (count-- > 0) 1485 (*tp->t_linesw->l_rint)(*data++, tp); 1486 } 1487 1488 /* 1489 * Calls from the keyboard interface. 1490 */ 1491 void 1492 wsdisplay_kbdinput(struct device *dev, keysym_t ks) 1493 { 1494 struct wsdisplay_softc *sc = (struct wsdisplay_softc *)dev; 1495 struct wsscreen *scr; 1496 const char *dp; 1497 int count; 1498 struct tty *tp; 1499 1500 KASSERT(sc != NULL); 1501 1502 scr = sc->sc_focus; 1503 1504 if (!scr || !WSSCREEN_HAS_TTY(scr)) 1505 return; 1506 1507 tp = scr->scr_tty; 1508 1509 if (KS_GROUP(ks) == KS_GROUP_Ascii) 1510 (*tp->t_linesw->l_rint)(KS_VALUE(ks), tp); 1511 else if (WSSCREEN_HAS_EMULATOR(scr)) { 1512 count = (*scr->scr_dconf->wsemul->translate) 1513 (scr->scr_dconf->wsemulcookie, ks, &dp); 1514 while (count-- > 0) 1515 (*tp->t_linesw->l_rint)(*dp++, tp); 1516 } 1517 } 1518 1519 #if defined(WSDISPLAY_COMPAT_RAWKBD) 1520 int 1521 wsdisplay_update_rawkbd(struct wsdisplay_softc *sc, struct wsscreen *scr) 1522 { 1523 #if NWSKBD > 0 1524 int s, raw, data, error; 1525 struct wsevsrc *inp; 1526 1527 s = spltty(); 1528 1529 raw = (scr ? scr->scr_rawkbd : 0); 1530 1531 if (scr != sc->sc_focus || 1532 sc->sc_rawkbd == raw) { 1533 splx(s); 1534 return (0); 1535 } 1536 1537 data = raw ? WSKBD_RAW : WSKBD_TRANSLATED; 1538 inp = sc->sc_input; 1539 if (inp == NULL) { 1540 splx(s); 1541 return (ENXIO); 1542 } 1543 error = wsevsrc_display_ioctl(inp, WSKBDIO_SETMODE, &data, 0, 0); 1544 if (!error) 1545 sc->sc_rawkbd = raw; 1546 splx(s); 1547 return (error); 1548 #else 1549 return (0); 1550 #endif 1551 } 1552 #endif 1553 1554 int 1555 wsdisplay_switch3(void *arg, int error, int waitok) 1556 { 1557 struct wsdisplay_softc *sc = arg; 1558 int no; 1559 struct wsscreen *scr; 1560 1561 if (!(sc->sc_flags & SC_SWITCHPENDING)) { 1562 printf("wsdisplay_switch3: not switching\n"); 1563 return (EINVAL); 1564 } 1565 1566 no = sc->sc_screenwanted; 1567 if (no < 0 || no >= WSDISPLAY_MAXSCREEN) 1568 panic("wsdisplay_switch3: invalid screen %d", no); 1569 scr = sc->sc_scr[no]; 1570 if (!scr) { 1571 printf("wsdisplay_switch3: screen %d disappeared\n", no); 1572 error = ENXIO; 1573 } 1574 1575 if (error) { 1576 /* try to recover, avoid recursion */ 1577 1578 if (sc->sc_oldscreen == WSDISPLAY_NULLSCREEN) { 1579 printf("wsdisplay_switch3: giving up\n"); 1580 sc->sc_focus = 0; 1581 #ifdef WSDISPLAY_COMPAT_RAWKBD 1582 wsdisplay_update_rawkbd(sc, 0); 1583 #endif 1584 sc->sc_flags &= ~SC_SWITCHPENDING; 1585 return (error); 1586 } 1587 1588 sc->sc_screenwanted = sc->sc_oldscreen; 1589 sc->sc_oldscreen = WSDISPLAY_NULLSCREEN; 1590 return (wsdisplay_switch1(arg, 0, waitok)); 1591 } 1592 1593 sc->sc_flags &= ~SC_SWITCHPENDING; 1594 1595 if (!error && (scr->scr_flags & SCR_WAITACTIVE)) 1596 wakeup(scr); 1597 return (error); 1598 } 1599 1600 int 1601 wsdisplay_switch2(void *arg, int error, int waitok) 1602 { 1603 struct wsdisplay_softc *sc = arg; 1604 int no; 1605 struct wsscreen *scr; 1606 1607 if (!(sc->sc_flags & SC_SWITCHPENDING)) { 1608 printf("wsdisplay_switch2: not switching\n"); 1609 return (EINVAL); 1610 } 1611 1612 no = sc->sc_screenwanted; 1613 if (no < 0 || no >= WSDISPLAY_MAXSCREEN) 1614 panic("wsdisplay_switch2: invalid screen %d", no); 1615 scr = sc->sc_scr[no]; 1616 if (!scr) { 1617 printf("wsdisplay_switch2: screen %d disappeared\n", no); 1618 error = ENXIO; 1619 } 1620 1621 if (error) { 1622 /* try to recover, avoid recursion */ 1623 1624 if (sc->sc_oldscreen == WSDISPLAY_NULLSCREEN) { 1625 printf("wsdisplay_switch2: giving up\n"); 1626 sc->sc_focus = 0; 1627 sc->sc_flags &= ~SC_SWITCHPENDING; 1628 return (error); 1629 } 1630 1631 sc->sc_screenwanted = sc->sc_oldscreen; 1632 sc->sc_oldscreen = WSDISPLAY_NULLSCREEN; 1633 return (wsdisplay_switch1(arg, 0, waitok)); 1634 } 1635 1636 sc->sc_focusidx = no; 1637 sc->sc_focus = scr; 1638 1639 #ifdef WSDISPLAY_COMPAT_RAWKBD 1640 (void) wsdisplay_update_rawkbd(sc, scr); 1641 #endif 1642 /* keyboard map??? */ 1643 1644 #define wsswitch_cb3 ((void (*)(void *, int, int))wsdisplay_switch3) 1645 if (scr->scr_syncops) { 1646 error = (*scr->scr_syncops->attach)(scr->scr_synccookie, waitok, 1647 sc->sc_isconsole && wsdisplay_cons_pollmode ? 0 : wsswitch_cb3, sc); 1648 if (error == EAGAIN) { 1649 /* switch will be done asynchronously */ 1650 return (0); 1651 } 1652 } 1653 1654 return (wsdisplay_switch3(sc, error, waitok)); 1655 } 1656 1657 int 1658 wsdisplay_switch1(void *arg, int error, int waitok) 1659 { 1660 struct wsdisplay_softc *sc = arg; 1661 int no; 1662 struct wsscreen *scr; 1663 1664 if (!(sc->sc_flags & SC_SWITCHPENDING)) { 1665 printf("wsdisplay_switch1: not switching\n"); 1666 return (EINVAL); 1667 } 1668 1669 no = sc->sc_screenwanted; 1670 if (no == WSDISPLAY_NULLSCREEN) { 1671 sc->sc_flags &= ~SC_SWITCHPENDING; 1672 if (!error) { 1673 sc->sc_focus = 0; 1674 } 1675 wakeup(sc); 1676 return (error); 1677 } 1678 if (no < 0 || no >= WSDISPLAY_MAXSCREEN) 1679 panic("wsdisplay_switch1: invalid screen %d", no); 1680 scr = sc->sc_scr[no]; 1681 if (!scr) { 1682 printf("wsdisplay_switch1: screen %d disappeared\n", no); 1683 error = ENXIO; 1684 } 1685 1686 if (error) { 1687 sc->sc_flags &= ~SC_SWITCHPENDING; 1688 return (error); 1689 } 1690 1691 #define wsswitch_cb2 ((void (*)(void *, int, int))wsdisplay_switch2) 1692 error = (*sc->sc_accessops->show_screen)(sc->sc_accesscookie, 1693 scr->scr_dconf->emulcookie, 1694 waitok, 1695 sc->sc_isconsole && wsdisplay_cons_pollmode ? 0 : wsswitch_cb2, sc); 1696 if (error == EAGAIN) { 1697 /* switch will be done asynchronously */ 1698 return (0); 1699 } 1700 1701 return (wsdisplay_switch2(sc, error, waitok)); 1702 } 1703 1704 int 1705 wsdisplay_switch(struct device *dev, int no, int waitok) 1706 { 1707 struct wsdisplay_softc *sc = (struct wsdisplay_softc *)dev; 1708 int s, res = 0; 1709 struct wsscreen *scr; 1710 1711 if (no != WSDISPLAY_NULLSCREEN) { 1712 if ((no < 0 || no >= WSDISPLAY_MAXSCREEN)) 1713 return (EINVAL); 1714 if (sc->sc_scr[no] == NULL) 1715 return (ENXIO); 1716 } 1717 1718 wsdisplay_stat_inject(dev, WSCONS_EVENT_SCREEN_SWITCH, no); 1719 1720 s = spltty(); 1721 1722 if ((sc->sc_focus && no == sc->sc_focusidx) || 1723 (sc->sc_focus == NULL && no == WSDISPLAY_NULLSCREEN)) { 1724 splx(s); 1725 return (0); 1726 } 1727 1728 if (sc->sc_flags & SC_SWITCHPENDING) { 1729 splx(s); 1730 return (EBUSY); 1731 } 1732 1733 sc->sc_flags |= SC_SWITCHPENDING; 1734 sc->sc_screenwanted = no; 1735 1736 splx(s); 1737 1738 scr = sc->sc_focus; 1739 if (!scr) { 1740 sc->sc_oldscreen = WSDISPLAY_NULLSCREEN; 1741 return (wsdisplay_switch1(sc, 0, waitok)); 1742 } else 1743 sc->sc_oldscreen = sc->sc_focusidx; 1744 1745 #define wsswitch_cb1 ((void (*)(void *, int, int))wsdisplay_switch1) 1746 if (scr->scr_syncops) { 1747 res = (*scr->scr_syncops->detach)(scr->scr_synccookie, waitok, 1748 sc->sc_isconsole && wsdisplay_cons_pollmode ? 0 : wsswitch_cb1, sc); 1749 if (res == EAGAIN) { 1750 /* switch will be done asynchronously */ 1751 return (0); 1752 } 1753 } else if (scr->scr_flags & SCR_GRAPHICS) { 1754 /* no way to save state */ 1755 res = EBUSY; 1756 } 1757 1758 return (wsdisplay_switch1(sc, res, waitok)); 1759 } 1760 1761 void 1762 wsdisplay_reset(struct device *dev, enum wsdisplay_resetops op) 1763 { 1764 struct wsdisplay_softc *sc = (struct wsdisplay_softc *)dev; 1765 struct wsscreen *scr; 1766 1767 KASSERT(sc != NULL); 1768 scr = sc->sc_focus; 1769 1770 if (!scr) 1771 return; 1772 1773 switch (op) { 1774 case WSDISPLAY_RESETEMUL: 1775 if (!WSSCREEN_HAS_EMULATOR(scr)) 1776 break; 1777 (*scr->scr_dconf->wsemul->reset)(scr->scr_dconf->wsemulcookie, 1778 WSEMUL_RESET); 1779 break; 1780 case WSDISPLAY_RESETCLOSE: 1781 wsdisplay_closescreen(sc, scr); 1782 break; 1783 } 1784 } 1785 1786 /* 1787 * Interface for (external) VT switch / process synchronization code 1788 */ 1789 int 1790 wsscreen_attach_sync(struct wsscreen *scr, const struct wscons_syncops *ops, 1791 void *cookie) 1792 { 1793 if (scr->scr_syncops) { 1794 /* 1795 * The screen is already claimed. 1796 * Check if the owner is still alive. 1797 */ 1798 if ((*scr->scr_syncops->check)(scr->scr_synccookie)) 1799 return (EBUSY); 1800 } 1801 scr->scr_syncops = ops; 1802 scr->scr_synccookie = cookie; 1803 return (0); 1804 } 1805 1806 int 1807 wsscreen_detach_sync(struct wsscreen *scr) 1808 { 1809 if (!scr->scr_syncops) 1810 return (EINVAL); 1811 scr->scr_syncops = 0; 1812 return (0); 1813 } 1814 1815 int 1816 wsscreen_lookup_sync(struct wsscreen *scr, 1817 const struct wscons_syncops *ops, /* used as ID */ 1818 void **cookiep) 1819 { 1820 if (!scr->scr_syncops || ops != scr->scr_syncops) 1821 return (EINVAL); 1822 *cookiep = scr->scr_synccookie; 1823 return (0); 1824 } 1825 1826 /* 1827 * Interface to virtual screen stuff 1828 */ 1829 int 1830 wsdisplay_maxscreenidx(struct wsdisplay_softc *sc) 1831 { 1832 return (WSDISPLAY_MAXSCREEN - 1); 1833 } 1834 1835 int 1836 wsdisplay_screenstate(struct wsdisplay_softc *sc, int idx) 1837 { 1838 if (idx < 0 || idx >= WSDISPLAY_MAXSCREEN) 1839 return (EINVAL); 1840 if (!sc->sc_scr[idx]) 1841 return (ENXIO); 1842 return ((sc->sc_scr[idx]->scr_flags & SCR_OPEN) ? EBUSY : 0); 1843 } 1844 1845 int 1846 wsdisplay_getactivescreen(struct wsdisplay_softc *sc) 1847 { 1848 return (sc->sc_focus ? sc->sc_focusidx : WSDISPLAY_NULLSCREEN); 1849 } 1850 1851 int 1852 wsscreen_switchwait(struct wsdisplay_softc *sc, int no) 1853 { 1854 struct wsscreen *scr; 1855 int s, res = 0; 1856 1857 if (no == WSDISPLAY_NULLSCREEN) { 1858 s = spltty(); 1859 while (sc->sc_focus && res == 0) { 1860 res = tsleep(sc, PCATCH, "wswait", 0); 1861 } 1862 splx(s); 1863 return (res); 1864 } 1865 1866 if (no < 0 || no >= WSDISPLAY_MAXSCREEN) 1867 return (ENXIO); 1868 scr = sc->sc_scr[no]; 1869 if (!scr) 1870 return (ENXIO); 1871 1872 s = spltty(); 1873 if (scr != sc->sc_focus) { 1874 scr->scr_flags |= SCR_WAITACTIVE; 1875 res = tsleep(scr, PCATCH, "wswait", 0); 1876 if (scr != sc->sc_scr[no]) 1877 res = ENXIO; /* disappeared in the meantime */ 1878 else 1879 scr->scr_flags &= ~SCR_WAITACTIVE; 1880 } 1881 splx(s); 1882 return (res); 1883 } 1884 1885 void 1886 wsdisplay_kbdholdscreen(struct device *dev, int hold) 1887 { 1888 struct wsdisplay_softc *sc = (struct wsdisplay_softc *)dev; 1889 struct wsscreen *scr; 1890 1891 scr = sc->sc_focus; 1892 1893 if (hold) 1894 scr->scr_hold_screen = 1; 1895 else { 1896 scr->scr_hold_screen = 0; 1897 callout_reset(&scr->scr_tty->t_rstrt_ch, 0, 1898 ttrstrt, scr->scr_tty); /* "immediate" */ 1899 } 1900 } 1901 1902 #if NWSKBD > 0 1903 void 1904 wsdisplay_set_console_kbd(struct wsevsrc *src) 1905 { 1906 if (wsdisplay_console_device == NULL) { 1907 src->me_dispdv = NULL; 1908 return; 1909 } 1910 #if NWSMUX > 0 1911 if (wsmux_attach_sc((struct wsmux_softc *) 1912 wsdisplay_console_device->sc_input, src)) { 1913 src->me_dispdv = NULL; 1914 return; 1915 } 1916 #else 1917 wsdisplay_console_device->sc_input = src; 1918 #endif 1919 src->me_dispdv = &wsdisplay_console_device->sc_dv; 1920 } 1921 #endif /* NWSKBD > 0 */ 1922 1923 /* 1924 * Console interface. 1925 */ 1926 void 1927 wsdisplay_cnputc(dev_t dev, int i) 1928 { 1929 struct wsscreen_internal *dc; 1930 u_char c = i; 1931 1932 if (!wsdisplay_console_initted) 1933 return; 1934 1935 if ((wsdisplay_console_device != NULL) && 1936 (wsdisplay_console_device->sc_scr[0] != NULL) && 1937 (wsdisplay_console_device->sc_scr[0]->scr_flags & SCR_GRAPHICS)) 1938 return; 1939 1940 dc = &wsdisplay_console_conf; 1941 (*dc->wsemul->output)(dc->wsemulcookie, &c, 1, 1); 1942 } 1943 1944 static int 1945 wsdisplay_getc_dummy(dev_t dev) 1946 { 1947 /* panic? */ 1948 return (0); 1949 } 1950 1951 static void 1952 wsdisplay_pollc(dev_t dev, int on) 1953 { 1954 1955 wsdisplay_cons_pollmode = on; 1956 1957 /* notify to fb drivers */ 1958 if (wsdisplay_console_device != NULL && 1959 wsdisplay_console_device->sc_accessops->pollc != NULL) 1960 (*wsdisplay_console_device->sc_accessops->pollc) 1961 (wsdisplay_console_device->sc_accesscookie, on); 1962 1963 /* notify to kbd drivers */ 1964 if (wsdisplay_cons_kbd_pollc) 1965 (*wsdisplay_cons_kbd_pollc)(NODEV, on); 1966 } 1967 1968 void 1969 wsdisplay_set_cons_kbd(int (*get)(dev_t), void (*poll)(dev_t, int), 1970 void (*bell)(dev_t, u_int, u_int, u_int)) 1971 { 1972 wsdisplay_cons.cn_getc = get; 1973 wsdisplay_cons.cn_bell = bell; 1974 wsdisplay_cons_kbd_pollc = poll; 1975 } 1976 1977 void 1978 wsdisplay_unset_cons_kbd(void) 1979 { 1980 wsdisplay_cons.cn_getc = wsdisplay_getc_dummy; 1981 wsdisplay_cons.cn_bell = NULL; 1982 wsdisplay_cons_kbd_pollc = 0; 1983 } 1984 1985 /* 1986 * Switch the console display to it's first screen. 1987 */ 1988 void 1989 wsdisplay_switchtoconsole(void) 1990 { 1991 struct wsdisplay_softc *sc; 1992 struct wsscreen *scr; 1993 1994 if (wsdisplay_console_device != NULL) { 1995 sc = wsdisplay_console_device; 1996 if ((scr = sc->sc_scr[0]) == NULL) 1997 return; 1998 (*sc->sc_accessops->show_screen)(sc->sc_accesscookie, 1999 scr->scr_dconf->emulcookie, 2000 0, NULL, NULL); 2001 } 2002 } 2003 2004 /* 2005 * Switch the console at shutdown. 2006 */ 2007 static void 2008 wsdisplay_shutdownhook(void *arg) 2009 { 2010 2011 wsdisplay_switchtoconsole(); 2012 } 2013
Indexes created Sat Oct 18 08:10:09 GMT 2025