wsdisplay.c revision 1.157
1 /* $NetBSD: wsdisplay.c,v 1.157 2019/07/24 19:40:55 jmcneill 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 1.157 2019/07/24 19:40:55 jmcneill Exp $"); 35 36 #ifdef _KERNEL_OPT 37 #include "opt_wsdisplay_compat.h" 38 #include "opt_wsmsgattrs.h" 39 #endif 40 41 #include "wskbd.h" 42 #include "wsmux.h" 43 #include "wsdisplay.h" 44 45 #include <sys/param.h> 46 #include <sys/conf.h> 47 #include <sys/device.h> 48 #include <sys/ioctl.h> 49 #include <sys/poll.h> 50 #include <sys/kernel.h> 51 #include <sys/proc.h> 52 #include <sys/malloc.h> 53 #include <sys/syslog.h> 54 #include <sys/systm.h> 55 #include <sys/tty.h> 56 #include <sys/signalvar.h> 57 #include <sys/errno.h> 58 #include <sys/fcntl.h> 59 #include <sys/vnode.h> 60 #include <sys/kauth.h> 61 #include <sys/sysctl.h> 62 63 #include <dev/wscons/wsconsio.h> 64 #include <dev/wscons/wseventvar.h> 65 #include <dev/wscons/wsmuxvar.h> 66 #include <dev/wscons/wsdisplayvar.h> 67 #include <dev/wscons/wsksymvar.h> 68 #include <dev/wscons/wsksymdef.h> 69 #include <dev/wscons/wsemulvar.h> 70 #include <dev/wscons/wscons_callbacks.h> 71 #include <dev/cons.h> 72 73 #include "locators.h" 74 75 #ifdef WSDISPLAY_MULTICONS 76 static bool wsdisplay_multicons_enable = true; 77 static bool wsdisplay_multicons_suspended = false; 78 #endif 79 80 /* Console device before replaced by wsdisplay */ 81 static struct consdev *wsdisplay_ocn; 82 83 struct wsscreen_internal { 84 const struct wsdisplay_emulops *emulops; 85 void *emulcookie; 86 87 const struct wsscreen_descr *scrdata; 88 89 const struct wsemul_ops *wsemul; 90 void *wsemulcookie; 91 }; 92 93 struct wsscreen { 94 struct wsscreen_internal *scr_dconf; 95 96 struct tty *scr_tty; 97 int scr_hold_screen; /* hold tty output */ 98 99 int scr_flags; 100 #define SCR_OPEN 1 /* is it open? */ 101 #define SCR_WAITACTIVE 2 /* someone waiting on activation */ 102 #define SCR_GRAPHICS 4 /* graphics mode, no text (emulation) output */ 103 #define SCR_DUMBFB 8 /* in use as a dumb fb (iff SCR_GRAPHICS) */ 104 const struct wscons_syncops *scr_syncops; 105 void *scr_synccookie; 106 107 #ifdef WSDISPLAY_COMPAT_RAWKBD 108 int scr_rawkbd; 109 #endif 110 111 #ifdef WSDISPLAY_MULTICONS 112 callout_t scr_getc_ch; 113 #endif 114 115 struct wsdisplay_softc *sc; 116 117 #ifdef DIAGNOSTIC 118 /* XXX this is to support a hack in emulinput, see comment below */ 119 int scr_in_ttyoutput; 120 #endif 121 }; 122 123 struct wsscreen *wsscreen_attach(struct wsdisplay_softc *, int, 124 const char *, 125 const struct wsscreen_descr *, void *, 126 int, int, long); 127 void wsscreen_detach(struct wsscreen *); 128 int wsdisplay_addscreen(struct wsdisplay_softc *, int, const char *, const char *); 129 static void wsdisplay_addscreen_print(struct wsdisplay_softc *, int, int); 130 static void wsdisplay_closescreen(struct wsdisplay_softc *, struct wsscreen *); 131 int wsdisplay_delscreen(struct wsdisplay_softc *, int, int); 132 133 #define WSDISPLAY_MAXSCREEN 8 134 135 struct wsdisplay_softc { 136 device_t sc_dev; 137 138 const struct wsdisplay_accessops *sc_accessops; 139 void *sc_accesscookie; 140 141 const struct wsscreen_list *sc_scrdata; 142 #ifdef WSDISPLAY_SCROLLSUPPORT 143 struct wsdisplay_scroll_data sc_scroll_values; 144 #endif 145 146 struct wsscreen *sc_scr[WSDISPLAY_MAXSCREEN]; 147 int sc_focusidx; /* available only if sc_focus isn't null */ 148 struct wsscreen *sc_focus; 149 150 struct wseventvar evar; 151 152 int sc_isconsole; 153 154 int sc_flags; 155 #define SC_SWITCHPENDING 1 156 #define SC_SWITCHERROR 2 157 #define SC_XATTACHED 4 /* X server active */ 158 kmutex_t sc_flagsmtx; /* for flags, might also be used for focus */ 159 kcondvar_t sc_flagscv; 160 161 int sc_screenwanted, sc_oldscreen; /* valid with SC_SWITCHPENDING */ 162 163 #if NWSKBD > 0 164 struct wsevsrc *sc_input; 165 #ifdef WSDISPLAY_COMPAT_RAWKBD 166 int sc_rawkbd; 167 #endif 168 #endif /* NWSKBD > 0 */ 169 }; 170 171 #ifdef WSDISPLAY_SCROLLSUPPORT 172 173 struct wsdisplay_scroll_data wsdisplay_default_scroll_values = { 174 WSDISPLAY_SCROLL_DOALL, 175 25, 176 2, 177 }; 178 #endif 179 180 extern struct cfdriver wsdisplay_cd; 181 182 /* Autoconfiguration definitions. */ 183 static int wsdisplay_emul_match(device_t , cfdata_t, void *); 184 static void wsdisplay_emul_attach(device_t, device_t, void *); 185 static int wsdisplay_emul_detach(device_t, int); 186 static int wsdisplay_noemul_match(device_t, cfdata_t, void *); 187 static void wsdisplay_noemul_attach(device_t, device_t, void *); 188 static bool wsdisplay_suspend(device_t, const pmf_qual_t *); 189 190 CFATTACH_DECL_NEW(wsdisplay_emul, sizeof (struct wsdisplay_softc), 191 wsdisplay_emul_match, wsdisplay_emul_attach, wsdisplay_emul_detach, NULL); 192 193 CFATTACH_DECL_NEW(wsdisplay_noemul, sizeof (struct wsdisplay_softc), 194 wsdisplay_noemul_match, wsdisplay_noemul_attach, NULL, NULL); 195 196 dev_type_open(wsdisplayopen); 197 dev_type_close(wsdisplayclose); 198 dev_type_read(wsdisplayread); 199 dev_type_write(wsdisplaywrite); 200 dev_type_ioctl(wsdisplayioctl); 201 dev_type_stop(wsdisplaystop); 202 dev_type_tty(wsdisplaytty); 203 dev_type_poll(wsdisplaypoll); 204 dev_type_mmap(wsdisplaymmap); 205 dev_type_kqfilter(wsdisplaykqfilter); 206 207 const struct cdevsw wsdisplay_cdevsw = { 208 .d_open = wsdisplayopen, 209 .d_close = wsdisplayclose, 210 .d_read = wsdisplayread, 211 .d_write = wsdisplaywrite, 212 .d_ioctl = wsdisplayioctl, 213 .d_stop = wsdisplaystop, 214 .d_tty = wsdisplaytty, 215 .d_poll = wsdisplaypoll, 216 .d_mmap = wsdisplaymmap, 217 .d_kqfilter = wsdisplaykqfilter, 218 .d_discard = nodiscard, 219 .d_flag = D_TTY 220 }; 221 222 static void wsdisplaystart(struct tty *); 223 static int wsdisplayparam(struct tty *, struct termios *); 224 225 226 #define WSDISPLAYUNIT(dev) (minor(dev) >> 8) 227 #define WSDISPLAYSCREEN(dev) (minor(dev) & 0xff) 228 #define ISWSDISPLAYSTAT(dev) (WSDISPLAYSCREEN(dev) == 254) 229 #define ISWSDISPLAYCTL(dev) (WSDISPLAYSCREEN(dev) == 255) 230 #define WSDISPLAYMINOR(unit, screen) (((unit) << 8) | (screen)) 231 232 #define WSSCREEN_HAS_EMULATOR(scr) ((scr)->scr_dconf->wsemul != NULL) 233 #define WSSCREEN_HAS_TTY(scr) ((scr)->scr_tty != NULL) 234 235 static void wsdisplay_common_attach(struct wsdisplay_softc *sc, 236 int console, int kbdmux, const struct wsscreen_list *, 237 const struct wsdisplay_accessops *accessops, 238 void *accesscookie); 239 240 #ifdef WSDISPLAY_COMPAT_RAWKBD 241 int wsdisplay_update_rawkbd(struct wsdisplay_softc *, 242 struct wsscreen *); 243 #endif 244 245 static int wsdisplay_console_initted; 246 static int wsdisplay_console_attached; 247 static struct wsdisplay_softc *wsdisplay_console_device; 248 static struct wsscreen_internal wsdisplay_console_conf; 249 250 static int wsdisplay_getc(dev_t); 251 static void wsdisplay_pollc(dev_t, int); 252 253 static int wsdisplay_cons_pollmode; 254 static int (*wsdisplay_cons_kbd_getc)(dev_t); 255 static void (*wsdisplay_cons_kbd_pollc)(dev_t, int); 256 257 static struct consdev wsdisplay_cons = { 258 NULL, NULL, wsdisplay_getc, wsdisplay_cnputc, 259 wsdisplay_pollc, NULL, NULL, NULL, NODEV, CN_NORMAL 260 }; 261 262 #ifndef WSDISPLAY_DEFAULTSCREENS 263 # define WSDISPLAY_DEFAULTSCREENS 0 264 #endif 265 int wsdisplay_defaultscreens = WSDISPLAY_DEFAULTSCREENS; 266 267 static int wsdisplay_switch1(device_t, int, int); 268 static void wsdisplay_switch1_cb(void *, int, int); 269 static int wsdisplay_switch2(device_t, int, int); 270 static void wsdisplay_switch2_cb(void *, int, int); 271 static int wsdisplay_switch3(device_t, int, int); 272 static void wsdisplay_switch3_cb(void *, int, int); 273 274 static void wsdisplay_swdone_cb(void *, int, int); 275 static int wsdisplay_dosync(struct wsdisplay_softc *, int); 276 277 int wsdisplay_clearonclose; 278 279 #ifdef WSDISPLAY_MULTICONS 280 /* 281 * Replace cn_isconsole() so that we can enter DDB from old console. 282 */ 283 bool 284 wsdisplay_cn_isconsole(dev_t dev) 285 { 286 287 return (cn_tab != NULL && cn_tab->cn_dev == dev) || 288 (cn_tab == &wsdisplay_cons && !wsdisplay_multicons_suspended && 289 wsdisplay_multicons_enable && wsdisplay_ocn != NULL && 290 wsdisplay_ocn->cn_dev == dev); 291 } 292 293 static void 294 wsscreen_getc_poll(void *priv) 295 { 296 struct wsscreen *scr = priv; 297 int c; 298 299 if (wsdisplay_multicons_enable && 300 wsdisplay_ocn && wsdisplay_ocn->cn_getc && 301 WSSCREEN_HAS_EMULATOR(scr) && WSSCREEN_HAS_TTY(scr)) { 302 struct tty *tp = scr->scr_tty; 303 do { 304 c = wsdisplay_ocn->cn_getc(wsdisplay_ocn->cn_dev); 305 if (c >= 0) 306 (*tp->t_linesw->l_rint)((unsigned char)c, tp); 307 } while (c >= 0); 308 } 309 310 callout_schedule(&scr->scr_getc_ch, mstohz(10)); 311 } 312 #endif 313 314 struct wsscreen * 315 wsscreen_attach(struct wsdisplay_softc *sc, int console, const char *emul, 316 const struct wsscreen_descr *type, void *cookie, int ccol, 317 int crow, long defattr) 318 { 319 struct wsscreen_internal *dconf; 320 struct wsscreen *scr; 321 322 scr = malloc(sizeof(struct wsscreen), M_DEVBUF, M_WAITOK); 323 324 if (console) { 325 dconf = &wsdisplay_console_conf; 326 /* 327 * If there's an emulation, tell it about the callback argument. 328 * The other stuff is already there. 329 */ 330 if (dconf->wsemul != NULL) 331 (*dconf->wsemul->attach)(1, 0, 0, 0, 0, scr, 0); 332 } else { /* not console */ 333 dconf = malloc(sizeof(struct wsscreen_internal), 334 M_DEVBUF, M_WAITOK); 335 dconf->emulops = type->textops; 336 dconf->emulcookie = cookie; 337 if (dconf->emulops) { 338 dconf->wsemul = wsemul_pick(emul); 339 if (dconf->wsemul == NULL) { 340 free(dconf, M_DEVBUF); 341 free(scr, M_DEVBUF); 342 return (NULL); 343 } 344 dconf->wsemulcookie = 345 (*dconf->wsemul->attach)(0, type, cookie, 346 ccol, crow, scr, defattr); 347 } else 348 dconf->wsemul = NULL; 349 dconf->scrdata = type; 350 } 351 352 scr->scr_dconf = dconf; 353 354 scr->scr_tty = tty_alloc(); 355 tty_attach(scr->scr_tty); 356 scr->scr_hold_screen = 0; 357 if (WSSCREEN_HAS_EMULATOR(scr)) 358 scr->scr_flags = 0; 359 else 360 scr->scr_flags = SCR_GRAPHICS; 361 362 scr->scr_syncops = 0; 363 scr->sc = sc; 364 #ifdef WSDISPLAY_COMPAT_RAWKBD 365 scr->scr_rawkbd = 0; 366 #endif 367 #ifdef WSDISPLAY_MULTICONS 368 callout_init(&scr->scr_getc_ch, 0); 369 callout_setfunc(&scr->scr_getc_ch, wsscreen_getc_poll, scr); 370 if (console) 371 callout_schedule(&scr->scr_getc_ch, mstohz(10)); 372 #endif 373 return (scr); 374 } 375 376 void 377 wsscreen_detach(struct wsscreen *scr) 378 { 379 u_int ccol, crow; /* XXX */ 380 381 if (WSSCREEN_HAS_TTY(scr)) { 382 tty_detach(scr->scr_tty); 383 tty_free(scr->scr_tty); 384 } 385 if (WSSCREEN_HAS_EMULATOR(scr)) { 386 (*scr->scr_dconf->wsemul->detach)(scr->scr_dconf->wsemulcookie, 387 &ccol, &crow); 388 wsemul_drop(scr->scr_dconf->wsemul); 389 } 390 if (scr->scr_dconf->scrdata->capabilities & WSSCREEN_FREE) 391 free(__UNCONST(scr->scr_dconf->scrdata), M_DEVBUF); 392 #ifdef WSDISPLAY_MULTICONS 393 callout_halt(&scr->scr_getc_ch, NULL); 394 callout_destroy(&scr->scr_getc_ch); 395 #endif 396 free(scr->scr_dconf, M_DEVBUF); 397 free(scr, M_DEVBUF); 398 } 399 400 const struct wsscreen_descr * 401 wsdisplay_screentype_pick(const struct wsscreen_list *scrdata, const char *name) 402 { 403 int i; 404 const struct wsscreen_descr *scr; 405 406 KASSERT(scrdata->nscreens > 0); 407 if (name == NULL) 408 return (scrdata->screens[0]); 409 410 for (i = 0; i < scrdata->nscreens; i++) { 411 scr = scrdata->screens[i]; 412 if (!strcmp(name, scr->name)) 413 return (scr); 414 } 415 416 return (0); 417 } 418 419 /* 420 * print info about attached screen 421 */ 422 static void 423 wsdisplay_addscreen_print(struct wsdisplay_softc *sc, int idx, int count) 424 { 425 aprint_verbose_dev(sc->sc_dev, "screen %d", idx); 426 if (count > 1) 427 aprint_verbose("-%d", idx + (count-1)); 428 aprint_verbose(" added (%s", sc->sc_scr[idx]->scr_dconf->scrdata->name); 429 if (WSSCREEN_HAS_EMULATOR(sc->sc_scr[idx])) { 430 aprint_verbose(", %s emulation", 431 sc->sc_scr[idx]->scr_dconf->wsemul->name); 432 } 433 aprint_verbose(")\n"); 434 } 435 436 int 437 wsdisplay_addscreen(struct wsdisplay_softc *sc, int idx, 438 const char *screentype, const char *emul) 439 { 440 const struct wsscreen_descr *scrdesc; 441 struct wsscreen_descr *scrdescr2; 442 int error; 443 void *cookie; 444 int ccol, crow; 445 long defattr; 446 struct wsscreen *scr; 447 int s; 448 449 if (idx < 0 || idx >= WSDISPLAY_MAXSCREEN) 450 return (EINVAL); 451 if (sc->sc_scr[idx] != NULL) 452 return (EBUSY); 453 scrdesc = wsdisplay_screentype_pick(sc->sc_scrdata, screentype); 454 if (!scrdesc) 455 return (ENXIO); 456 457 /* 458 * if this screen can resize we need to copy the descr so each screen 459 * gets its own 460 */ 461 if (scrdesc->capabilities & WSSCREEN_RESIZE) { 462 /* we want per screen wsscreen_descr */ 463 scrdescr2 = malloc(sizeof(struct wsscreen_descr), M_DEVBUF, M_NOWAIT); 464 if (scrdescr2 == NULL) 465 return ENOMEM; 466 memcpy(scrdescr2, scrdesc, sizeof(struct wsscreen_descr)); 467 scrdescr2->capabilities |= WSSCREEN_FREE; 468 scrdesc = scrdescr2; 469 } 470 471 error = (*sc->sc_accessops->alloc_screen)(sc->sc_accesscookie, 472 scrdesc, &cookie, &ccol, &crow, &defattr); 473 if (error) 474 return (error); 475 476 scr = wsscreen_attach(sc, 0, emul, scrdesc, 477 cookie, ccol, crow, defattr); 478 if (scr == NULL) { 479 (*sc->sc_accessops->free_screen)(sc->sc_accesscookie, 480 cookie); 481 return (ENXIO); 482 } 483 484 sc->sc_scr[idx] = scr; 485 486 /* if no screen has focus yet, activate the first we get */ 487 s = spltty(); 488 if (!sc->sc_focus) { 489 (*sc->sc_accessops->show_screen)(sc->sc_accesscookie, 490 scr->scr_dconf->emulcookie, 491 0, 0, 0); 492 sc->sc_focusidx = idx; 493 sc->sc_focus = scr; 494 } 495 splx(s); 496 return (0); 497 } 498 499 static void 500 wsdisplay_closescreen(struct wsdisplay_softc *sc, struct wsscreen *scr) 501 { 502 int maj, mn, idx; 503 504 /* hangup */ 505 if (WSSCREEN_HAS_TTY(scr)) { 506 struct tty *tp = scr->scr_tty; 507 (*tp->t_linesw->l_modem)(tp, 0); 508 } 509 510 /* locate the major number */ 511 maj = cdevsw_lookup_major(&wsdisplay_cdevsw); 512 /* locate the screen index */ 513 for (idx = 0; idx < WSDISPLAY_MAXSCREEN; idx++) 514 if (scr == sc->sc_scr[idx]) 515 break; 516 #ifdef DIAGNOSTIC 517 if (idx == WSDISPLAY_MAXSCREEN) 518 panic("wsdisplay_forceclose: bad screen"); 519 #endif 520 521 /* nuke the vnodes */ 522 mn = WSDISPLAYMINOR(device_unit(sc->sc_dev), idx); 523 vdevgone(maj, mn, mn, VCHR); 524 } 525 526 #ifdef WSDISPLAY_SCROLLSUPPORT 527 void 528 wsdisplay_scroll(void *arg, int op) 529 { 530 device_t dv = arg; 531 struct wsdisplay_softc *sc = device_private(dv); 532 struct wsscreen *scr; 533 int lines; 534 535 scr = sc->sc_focus; 536 537 if (!scr) 538 return; 539 540 if (op == WSDISPLAY_SCROLL_RESET) 541 lines = 0; 542 else { 543 lines = (op & WSDISPLAY_SCROLL_LOW) ? 544 sc->sc_scroll_values.slowlines : 545 sc->sc_scroll_values.fastlines; 546 if (op & WSDISPLAY_SCROLL_BACKWARD) 547 lines = -(lines); 548 } 549 550 if (sc->sc_accessops->scroll) { 551 (*sc->sc_accessops->scroll)(sc->sc_accesscookie, 552 sc->sc_focus->scr_dconf->emulcookie, lines); 553 } 554 } 555 #endif 556 557 int 558 wsdisplay_delscreen(struct wsdisplay_softc *sc, int idx, int flags) 559 { 560 struct wsscreen *scr; 561 int s; 562 void *cookie; 563 564 if (idx < 0 || idx >= WSDISPLAY_MAXSCREEN) 565 return (EINVAL); 566 if ((scr = sc->sc_scr[idx]) == NULL) 567 return (ENXIO); 568 569 if (scr->scr_dconf == &wsdisplay_console_conf || 570 scr->scr_syncops || 571 ((scr->scr_flags & SCR_OPEN) && !(flags & WSDISPLAY_DELSCR_FORCE))) 572 return(EBUSY); 573 574 wsdisplay_closescreen(sc, scr); 575 576 /* 577 * delete pointers, so neither device entries 578 * nor keyboard input can reference it anymore 579 */ 580 s = spltty(); 581 if (sc->sc_focus == scr) { 582 sc->sc_focus = 0; 583 #ifdef WSDISPLAY_COMPAT_RAWKBD 584 wsdisplay_update_rawkbd(sc, 0); 585 #endif 586 } 587 sc->sc_scr[idx] = 0; 588 splx(s); 589 590 /* 591 * Wake up processes waiting for the screen to 592 * be activated. Sleepers must check whether 593 * the screen still exists. 594 */ 595 if (scr->scr_flags & SCR_WAITACTIVE) 596 wakeup(scr); 597 598 /* save a reference to the graphics screen */ 599 cookie = scr->scr_dconf->emulcookie; 600 601 wsscreen_detach(scr); 602 603 (*sc->sc_accessops->free_screen)(sc->sc_accesscookie, 604 cookie); 605 606 aprint_verbose_dev(sc->sc_dev, "screen %d deleted\n", idx); 607 return (0); 608 } 609 610 /* 611 * Autoconfiguration functions. 612 */ 613 int 614 wsdisplay_emul_match(device_t parent, cfdata_t match, void *aux) 615 { 616 struct wsemuldisplaydev_attach_args *ap = aux; 617 618 if (match->cf_loc[WSEMULDISPLAYDEVCF_CONSOLE] != 619 WSEMULDISPLAYDEVCF_CONSOLE_DEFAULT) { 620 /* 621 * If console-ness of device specified, either match 622 * exactly (at high priority), or fail. 623 */ 624 if (match->cf_loc[WSEMULDISPLAYDEVCF_CONSOLE] != 0 && 625 ap->console != 0) 626 return (10); 627 else 628 return (0); 629 } 630 631 /* If console-ness unspecified, it wins. */ 632 return (1); 633 } 634 635 void 636 wsdisplay_emul_attach(device_t parent, device_t self, void *aux) 637 { 638 struct wsdisplay_softc *sc = device_private(self); 639 struct wsemuldisplaydev_attach_args *ap = aux; 640 641 sc->sc_dev = self; 642 643 /* Don't allow more than one console to attach */ 644 if (wsdisplay_console_attached && ap->console) 645 ap->console = 0; 646 647 wsdisplay_common_attach(sc, ap->console, 648 device_cfdata(self)->cf_loc[WSEMULDISPLAYDEVCF_KBDMUX], 649 ap->scrdata, ap->accessops, ap->accesscookie); 650 651 if (ap->console) { 652 int maj; 653 654 /* locate the major number */ 655 maj = cdevsw_lookup_major(&wsdisplay_cdevsw); 656 657 cn_tab->cn_dev = makedev(maj, WSDISPLAYMINOR(device_unit(self), 658 0)); 659 } 660 } 661 662 /* Print function (for parent devices). */ 663 int 664 wsemuldisplaydevprint(void *aux, const char *pnp) 665 { 666 #if 0 /* -Wunused */ 667 struct wsemuldisplaydev_attach_args *ap = aux; 668 #endif 669 670 if (pnp) 671 aprint_normal("wsdisplay at %s", pnp); 672 #if 0 /* don't bother; it's ugly */ 673 aprint_normal(" console %d", ap->console); 674 #endif 675 676 return (UNCONF); 677 } 678 679 int 680 wsdisplay_emul_detach(device_t dev, int how) 681 { 682 struct wsdisplay_softc *sc = device_private(dev); 683 int flag, i, res; 684 685 flag = (how & DETACH_FORCE ? WSDISPLAY_DELSCR_FORCE : 0); 686 for (i = 0; i < WSDISPLAY_MAXSCREEN; i++) 687 if (sc->sc_scr[i]) { 688 res = wsdisplay_delscreen(sc, i, flag); 689 if (res) 690 return res; 691 } 692 693 cv_destroy(&sc->sc_flagscv); 694 mutex_destroy(&sc->sc_flagsmtx); 695 return 0; 696 } 697 698 int 699 wsdisplay_noemul_match(device_t parent, cfdata_t match, void *aux) 700 { 701 #if 0 /* -Wunused */ 702 struct wsdisplaydev_attach_args *ap = aux; 703 #endif 704 705 /* Always match. */ 706 return (1); 707 } 708 709 void 710 wsdisplay_noemul_attach(device_t parent, device_t self, void *aux) 711 { 712 struct wsdisplay_softc *sc = device_private(self); 713 struct wsdisplaydev_attach_args *ap = aux; 714 715 sc->sc_dev = self; 716 717 wsdisplay_common_attach(sc, 0, 718 device_cfdata(self)->cf_loc[WSDISPLAYDEVCF_KBDMUX], NULL, 719 ap->accessops, ap->accesscookie); 720 } 721 722 static void 723 wsdisplay_swdone_cb(void *arg, int error, int waitok) 724 { 725 struct wsdisplay_softc *sc = arg; 726 727 mutex_enter(&sc->sc_flagsmtx); 728 KASSERT(sc->sc_flags & SC_SWITCHPENDING); 729 if (error) 730 sc->sc_flags |= SC_SWITCHERROR; 731 sc->sc_flags &= ~SC_SWITCHPENDING; 732 cv_signal(&sc->sc_flagscv); 733 mutex_exit(&sc->sc_flagsmtx); 734 } 735 736 static int 737 wsdisplay_dosync(struct wsdisplay_softc *sc, int attach) 738 { 739 struct wsscreen *scr; 740 int (*op)(void *, int, void (*)(void *, int, int), void *); 741 int res; 742 743 scr = sc->sc_focus; 744 if (!scr || !scr->scr_syncops) 745 return 0; /* XXX check SCR_GRAPHICS? */ 746 747 sc->sc_flags |= SC_SWITCHPENDING; 748 sc->sc_flags &= ~SC_SWITCHERROR; 749 if (attach) 750 op = scr->scr_syncops->attach; 751 else 752 op = scr->scr_syncops->detach; 753 res = (*op)(scr->scr_synccookie, 1, wsdisplay_swdone_cb, sc); 754 if (res == EAGAIN) { 755 /* wait for callback */ 756 mutex_enter(&sc->sc_flagsmtx); 757 while (sc->sc_flags & SC_SWITCHPENDING) 758 cv_wait_sig(&sc->sc_flagscv, &sc->sc_flagsmtx); 759 mutex_exit(&sc->sc_flagsmtx); 760 if (sc->sc_flags & SC_SWITCHERROR) 761 return (EIO); /* XXX pass real error */ 762 } else { 763 sc->sc_flags &= ~SC_SWITCHPENDING; 764 if (res) 765 return (res); 766 } 767 if (attach) 768 sc->sc_flags |= SC_XATTACHED; 769 else 770 sc->sc_flags &= ~SC_XATTACHED; 771 return 0; 772 } 773 774 int 775 wsdisplay_handlex(int resume) 776 { 777 int i, res; 778 device_t dv; 779 780 for (i = 0; i < wsdisplay_cd.cd_ndevs; i++) { 781 dv = device_lookup(&wsdisplay_cd, i); 782 if (!dv) 783 continue; 784 res = wsdisplay_dosync(device_private(dv), resume); 785 if (res) 786 return (res); 787 } 788 return (0); 789 } 790 791 static bool 792 wsdisplay_suspend(device_t dv, const pmf_qual_t *qual) 793 { 794 struct wsdisplay_softc *sc = device_private(dv); 795 #ifdef DIAGNOSTIC 796 struct wsscreen *scr = sc->sc_focus; 797 if (sc->sc_flags & SC_XATTACHED) { 798 KASSERT(scr && scr->scr_syncops); 799 } 800 #endif 801 #if 1 802 /* 803 * XXX X servers should have been detached earlier. 804 * pmf currently ignores our return value and suspends the system 805 * after device suspend failures. We try to avoid bigger damage 806 * and try to detach the X server here. This is not safe because 807 * other parts of the system which the X server deals with 808 * might already be suspended. 809 */ 810 if (sc->sc_flags & SC_XATTACHED) { 811 printf("%s: emergency X server detach\n", device_xname(dv)); 812 wsdisplay_dosync(sc, 0); 813 } 814 #endif 815 return (!(sc->sc_flags & SC_XATTACHED)); 816 } 817 818 /* Print function (for parent devices). */ 819 int 820 wsdisplaydevprint(void *aux, const char *pnp) 821 { 822 #if 0 /* -Wunused */ 823 struct wsdisplaydev_attach_args *ap = aux; 824 #endif 825 826 if (pnp) 827 aprint_normal("wsdisplay at %s", pnp); 828 829 return (UNCONF); 830 } 831 832 static void 833 wsdisplay_common_attach(struct wsdisplay_softc *sc, int console, int kbdmux, 834 const struct wsscreen_list *scrdata, 835 const struct wsdisplay_accessops *accessops, 836 void *accesscookie) 837 { 838 int i, start=0; 839 #if NWSKBD > 0 840 struct wsevsrc *kme; 841 #if NWSMUX > 0 842 struct wsmux_softc *mux; 843 844 if (kbdmux >= 0) 845 mux = wsmux_getmux(kbdmux); 846 else 847 mux = wsmux_create("dmux", device_unit(sc->sc_dev)); 848 /* XXX panic()ing isn't nice, but attach cannot fail */ 849 if (mux == NULL) 850 panic("wsdisplay_common_attach: no memory"); 851 sc->sc_input = &mux->sc_base; 852 mux->sc_base.me_dispdv = sc->sc_dev; 853 aprint_normal(" kbdmux %d", kbdmux); 854 #else 855 if (kbdmux >= 0) 856 aprint_normal(" (kbdmux ignored)"); 857 #endif 858 #endif 859 860 sc->sc_isconsole = console; 861 862 if (console) { 863 KASSERT(wsdisplay_console_initted); 864 KASSERT(wsdisplay_console_device == NULL); 865 866 sc->sc_scr[0] = wsscreen_attach(sc, 1, 0, 0, 0, 0, 0, 0); 867 wsdisplay_console_device = sc; 868 869 aprint_normal(": console (%s, %s emulation)", 870 wsdisplay_console_conf.scrdata->name, 871 wsdisplay_console_conf.wsemul->name); 872 873 #if NWSKBD > 0 874 kme = wskbd_set_console_display(sc->sc_dev, sc->sc_input); 875 if (kme != NULL) 876 aprint_normal(", using %s", device_xname(kme->me_dv)); 877 #if NWSMUX == 0 878 sc->sc_input = kme; 879 #endif 880 #endif 881 882 sc->sc_focusidx = 0; 883 sc->sc_focus = sc->sc_scr[0]; 884 start = 1; 885 886 wsdisplay_console_attached = 1; 887 } 888 aprint_normal("\n"); 889 aprint_naive("\n"); 890 891 #if NWSKBD > 0 && NWSMUX > 0 892 wsmux_set_display(mux, sc->sc_dev); 893 #endif 894 895 mutex_init(&sc->sc_flagsmtx, MUTEX_DEFAULT, IPL_NONE); 896 cv_init(&sc->sc_flagscv, "wssw"); 897 898 sc->sc_accessops = accessops; 899 sc->sc_accesscookie = accesscookie; 900 sc->sc_scrdata = scrdata; 901 902 #ifdef WSDISPLAY_SCROLLSUPPORT 903 sc->sc_scroll_values = wsdisplay_default_scroll_values; 904 #endif 905 906 /* 907 * Set up a number of virtual screens if wanted. The 908 * WSDISPLAYIO_ADDSCREEN ioctl is more flexible, so this code 909 * is for special cases like installation kernels. 910 */ 911 for (i = start; i < wsdisplay_defaultscreens; i++) { 912 if (wsdisplay_addscreen(sc, i, 0, 0)) 913 break; 914 } 915 916 if (i > start) 917 wsdisplay_addscreen_print(sc, start, i-start); 918 919 if (!pmf_device_register(sc->sc_dev, wsdisplay_suspend, NULL)) 920 aprint_error_dev(sc->sc_dev, 921 "couldn't establish power handler\n"); 922 } 923 924 void 925 wsdisplay_cnattach(const struct wsscreen_descr *type, void *cookie, 926 int ccol, int crow, long defattr) 927 { 928 const struct wsemul_ops *wsemul; 929 930 KASSERT(wsdisplay_console_initted < 2); 931 KASSERT(type->nrows > 0); 932 KASSERT(type->ncols > 0); 933 KASSERT(crow < type->nrows); 934 KASSERT(ccol < type->ncols); 935 936 wsdisplay_console_conf.emulops = type->textops; 937 wsdisplay_console_conf.emulcookie = cookie; 938 wsdisplay_console_conf.scrdata = type; 939 940 wsemul = wsemul_pick(0); /* default */ 941 wsdisplay_console_conf.wsemul = wsemul; 942 wsdisplay_console_conf.wsemulcookie = (*wsemul->cnattach)(type, cookie, 943 ccol, crow, 944 defattr); 945 946 if (cn_tab != &wsdisplay_cons) { 947 if (cn_tab != NULL && cn_tab->cn_halt != NULL) 948 cn_tab->cn_halt(cn_tab->cn_dev); 949 wsdisplay_ocn = cn_tab; 950 } 951 cn_tab = &wsdisplay_cons; 952 wsdisplay_console_initted = 2; 953 } 954 955 void 956 wsdisplay_preattach(const struct wsscreen_descr *type, void *cookie, 957 int ccol, int crow, long defattr) 958 { 959 const struct wsemul_ops *wsemul; 960 961 KASSERT(!wsdisplay_console_initted); 962 KASSERT(type->nrows > 0); 963 KASSERT(type->ncols > 0); 964 KASSERT(crow < type->nrows); 965 KASSERT(ccol < type->ncols); 966 967 wsdisplay_console_conf.emulops = type->textops; 968 wsdisplay_console_conf.emulcookie = cookie; 969 wsdisplay_console_conf.scrdata = type; 970 971 wsemul = wsemul_pick(0); /* default */ 972 wsdisplay_console_conf.wsemul = wsemul; 973 wsdisplay_console_conf.wsemulcookie = (*wsemul->cnattach)(type, cookie, 974 ccol, crow, 975 defattr); 976 977 if (cn_tab != &wsdisplay_cons) { 978 if (cn_tab != NULL && cn_tab->cn_halt != NULL) 979 cn_tab->cn_halt(cn_tab->cn_dev); 980 wsdisplay_ocn = cn_tab; 981 } 982 cn_tab = &wsdisplay_cons; 983 wsdisplay_console_initted = 1; 984 } 985 986 void 987 wsdisplay_cndetach(void) 988 { 989 KASSERT(wsdisplay_console_initted == 2); 990 991 cn_tab = wsdisplay_ocn; 992 wsdisplay_console_initted = 0; 993 } 994 995 /* 996 * Tty and cdevsw functions. 997 */ 998 int 999 wsdisplayopen(dev_t dev, int flag, int mode, struct lwp *l) 1000 { 1001 struct wsdisplay_softc *sc; 1002 struct tty *tp; 1003 int newopen, error; 1004 struct wsscreen *scr; 1005 1006 sc = device_lookup_private(&wsdisplay_cd, WSDISPLAYUNIT(dev)); 1007 if (sc == NULL) /* make sure it was attached */ 1008 return (ENXIO); 1009 1010 if (ISWSDISPLAYSTAT(dev)) { 1011 wsevent_init(&sc->evar, l->l_proc); 1012 return (0); 1013 } 1014 1015 if (ISWSDISPLAYCTL(dev)) 1016 return (0); 1017 1018 if (WSDISPLAYSCREEN(dev) >= WSDISPLAY_MAXSCREEN) 1019 return (ENXIO); 1020 if ((scr = sc->sc_scr[WSDISPLAYSCREEN(dev)]) == NULL) 1021 return (ENXIO); 1022 1023 if (WSSCREEN_HAS_TTY(scr)) { 1024 tp = scr->scr_tty; 1025 tp->t_oproc = wsdisplaystart; 1026 tp->t_param = wsdisplayparam; 1027 tp->t_dev = dev; 1028 newopen = (tp->t_state & TS_ISOPEN) == 0; 1029 1030 if (kauth_authorize_device_tty(l->l_cred, 1031 KAUTH_DEVICE_TTY_OPEN, tp)) 1032 return (EBUSY); 1033 1034 if (newopen) { 1035 ttychars(tp); 1036 tp->t_iflag = TTYDEF_IFLAG; 1037 tp->t_oflag = TTYDEF_OFLAG; 1038 tp->t_cflag = TTYDEF_CFLAG; 1039 tp->t_lflag = TTYDEF_LFLAG; 1040 tp->t_ispeed = tp->t_ospeed = TTYDEF_SPEED; 1041 wsdisplayparam(tp, &tp->t_termios); 1042 ttsetwater(tp); 1043 } 1044 tp->t_state |= TS_CARR_ON; 1045 1046 error = ((*tp->t_linesw->l_open)(dev, tp)); 1047 if (error) 1048 return (error); 1049 1050 if (newopen && WSSCREEN_HAS_EMULATOR(scr)) { 1051 /* set window sizes as appropriate, and reset 1052 the emulation */ 1053 tp->t_winsize.ws_row = scr->scr_dconf->scrdata->nrows; 1054 tp->t_winsize.ws_col = scr->scr_dconf->scrdata->ncols; 1055 1056 /* wsdisplay_set_emulation() */ 1057 } 1058 } 1059 1060 scr->scr_flags |= SCR_OPEN; 1061 return (0); 1062 } 1063 1064 int 1065 wsdisplayclose(dev_t dev, int flag, int mode, struct lwp *l) 1066 { 1067 device_t dv; 1068 struct wsdisplay_softc *sc; 1069 struct tty *tp; 1070 struct wsscreen *scr; 1071 1072 dv = device_lookup(&wsdisplay_cd, WSDISPLAYUNIT(dev)); 1073 sc = device_private(dv); 1074 1075 if (ISWSDISPLAYSTAT(dev)) { 1076 wsevent_fini(&sc->evar); 1077 return (0); 1078 } 1079 1080 if (ISWSDISPLAYCTL(dev)) 1081 return (0); 1082 1083 if ((scr = sc->sc_scr[WSDISPLAYSCREEN(dev)]) == NULL) 1084 return (0); 1085 1086 if (WSSCREEN_HAS_TTY(scr)) { 1087 if (scr->scr_hold_screen) { 1088 int s; 1089 1090 /* XXX RESET KEYBOARD LEDS, etc. */ 1091 s = spltty(); /* avoid conflict with keyboard */ 1092 wsdisplay_kbdholdscreen(dv, 0); 1093 splx(s); 1094 } 1095 tp = scr->scr_tty; 1096 (*tp->t_linesw->l_close)(tp, flag); 1097 ttyclose(tp); 1098 } 1099 1100 if (scr->scr_syncops) 1101 (*scr->scr_syncops->destroy)(scr->scr_synccookie); 1102 1103 if (WSSCREEN_HAS_EMULATOR(scr)) { 1104 scr->scr_flags &= ~SCR_GRAPHICS; 1105 (*scr->scr_dconf->wsemul->reset)(scr->scr_dconf->wsemulcookie, 1106 WSEMUL_RESET); 1107 if (wsdisplay_clearonclose) 1108 (*scr->scr_dconf->wsemul->reset) 1109 (scr->scr_dconf->wsemulcookie, 1110 WSEMUL_CLEARSCREEN); 1111 } 1112 1113 #ifdef WSDISPLAY_COMPAT_RAWKBD 1114 if (scr->scr_rawkbd) { 1115 int kbmode = WSKBD_TRANSLATED; 1116 (void)wsdisplay_internal_ioctl(sc, scr, WSKBDIO_SETMODE, 1117 (void *)&kbmode, 0, l); 1118 } 1119 #endif 1120 1121 scr->scr_flags &= ~SCR_OPEN; 1122 1123 return (0); 1124 } 1125 1126 int 1127 wsdisplayread(dev_t dev, struct uio *uio, int flag) 1128 { 1129 struct wsdisplay_softc *sc; 1130 struct tty *tp; 1131 struct wsscreen *scr; 1132 int error; 1133 1134 sc = device_lookup_private(&wsdisplay_cd, WSDISPLAYUNIT(dev)); 1135 1136 if (ISWSDISPLAYSTAT(dev)) { 1137 error = wsevent_read(&sc->evar, uio, flag); 1138 return (error); 1139 } 1140 1141 if (ISWSDISPLAYCTL(dev)) 1142 return (0); 1143 1144 if ((scr = sc->sc_scr[WSDISPLAYSCREEN(dev)]) == NULL) 1145 return (ENXIO); 1146 1147 if (!WSSCREEN_HAS_TTY(scr)) 1148 return (ENODEV); 1149 1150 tp = scr->scr_tty; 1151 return ((*tp->t_linesw->l_read)(tp, uio, flag)); 1152 } 1153 1154 int 1155 wsdisplaywrite(dev_t dev, struct uio *uio, int flag) 1156 { 1157 struct wsdisplay_softc *sc; 1158 struct tty *tp; 1159 struct wsscreen *scr; 1160 1161 sc = device_lookup_private(&wsdisplay_cd, WSDISPLAYUNIT(dev)); 1162 1163 if (ISWSDISPLAYSTAT(dev)) { 1164 return (0); 1165 } 1166 1167 if (ISWSDISPLAYCTL(dev)) 1168 return (0); 1169 1170 if ((scr = sc->sc_scr[WSDISPLAYSCREEN(dev)]) == NULL) 1171 return (ENXIO); 1172 1173 if (!WSSCREEN_HAS_TTY(scr)) 1174 return (ENODEV); 1175 1176 tp = scr->scr_tty; 1177 return ((*tp->t_linesw->l_write)(tp, uio, flag)); 1178 } 1179 1180 int 1181 wsdisplaypoll(dev_t dev, int events, struct lwp *l) 1182 { 1183 struct wsdisplay_softc *sc; 1184 struct tty *tp; 1185 struct wsscreen *scr; 1186 1187 sc = device_lookup_private(&wsdisplay_cd, WSDISPLAYUNIT(dev)); 1188 1189 if (ISWSDISPLAYSTAT(dev)) 1190 return (wsevent_poll(&sc->evar, events, l)); 1191 1192 if (ISWSDISPLAYCTL(dev)) 1193 return (0); 1194 1195 if ((scr = sc->sc_scr[WSDISPLAYSCREEN(dev)]) == NULL) 1196 return (POLLHUP); 1197 1198 if (!WSSCREEN_HAS_TTY(scr)) 1199 return (POLLERR); 1200 1201 tp = scr->scr_tty; 1202 return ((*tp->t_linesw->l_poll)(tp, events, l)); 1203 } 1204 1205 int 1206 wsdisplaykqfilter(dev_t dev, struct knote *kn) 1207 { 1208 struct wsdisplay_softc *sc; 1209 struct wsscreen *scr; 1210 1211 sc = device_lookup_private(&wsdisplay_cd, WSDISPLAYUNIT(dev)); 1212 1213 if (ISWSDISPLAYCTL(dev)) 1214 return (1); 1215 1216 if ((scr = sc->sc_scr[WSDISPLAYSCREEN(dev)]) == NULL) 1217 return (1); 1218 1219 1220 if (WSSCREEN_HAS_TTY(scr)) 1221 return (ttykqfilter(dev, kn)); 1222 else 1223 return (1); 1224 } 1225 1226 struct tty * 1227 wsdisplaytty(dev_t dev) 1228 { 1229 struct wsdisplay_softc *sc; 1230 struct wsscreen *scr; 1231 1232 sc = device_lookup_private(&wsdisplay_cd, WSDISPLAYUNIT(dev)); 1233 1234 if (ISWSDISPLAYSTAT(dev)) 1235 panic("wsdisplaytty() on status device"); 1236 1237 if (ISWSDISPLAYCTL(dev)) 1238 panic("wsdisplaytty() on ctl device"); 1239 1240 if ((scr = sc->sc_scr[WSDISPLAYSCREEN(dev)]) == NULL) 1241 return NULL; 1242 1243 return (scr->scr_tty); 1244 } 1245 1246 int 1247 wsdisplayioctl(dev_t dev, u_long cmd, void *data, int flag, struct lwp *l) 1248 { 1249 device_t dv; 1250 struct wsdisplay_softc *sc; 1251 struct tty *tp; 1252 int error; 1253 struct wsscreen *scr; 1254 1255 dv = device_lookup(&wsdisplay_cd, WSDISPLAYUNIT(dev)); 1256 sc = device_private(dv); 1257 1258 #ifdef WSDISPLAY_COMPAT_USL 1259 error = wsdisplay_usl_ioctl1(dv, cmd, data, flag, l); 1260 if (error != EPASSTHROUGH) 1261 return (error); 1262 #endif 1263 1264 if (ISWSDISPLAYSTAT(dev)) 1265 return (wsdisplay_stat_ioctl(sc, cmd, data, flag, l)); 1266 1267 if (ISWSDISPLAYCTL(dev)) 1268 return (wsdisplay_cfg_ioctl(sc, cmd, data, flag, l)); 1269 1270 if ((scr = sc->sc_scr[WSDISPLAYSCREEN(dev)]) == NULL) 1271 return (ENXIO); 1272 1273 if (WSSCREEN_HAS_TTY(scr)) { 1274 tp = scr->scr_tty; 1275 1276 /* do the line discipline ioctls first */ 1277 error = (*tp->t_linesw->l_ioctl)(tp, cmd, data, flag, l); 1278 if (error != EPASSTHROUGH) 1279 return (error); 1280 1281 /* then the tty ioctls */ 1282 error = ttioctl(tp, cmd, data, flag, l); 1283 if (error != EPASSTHROUGH) 1284 return (error); 1285 } 1286 1287 #ifdef WSDISPLAY_COMPAT_USL 1288 error = wsdisplay_usl_ioctl2(sc, scr, cmd, data, flag, l); 1289 if (error != EPASSTHROUGH) 1290 return (error); 1291 #endif 1292 1293 return (wsdisplay_internal_ioctl(sc, scr, cmd, data, flag, l)); 1294 } 1295 1296 int 1297 wsdisplay_param(device_t dv, u_long cmd, struct wsdisplay_param *dp) 1298 { 1299 struct wsdisplay_softc *sc = device_private(dv); 1300 return ((*sc->sc_accessops->ioctl)(sc->sc_accesscookie, 1301 sc->sc_focus->scr_dconf->emulcookie, 1302 cmd, (void *)dp, 0, NULL)); 1303 } 1304 1305 int 1306 wsdisplay_internal_ioctl(struct wsdisplay_softc *sc, struct wsscreen *scr, 1307 u_long cmd, void *data, int flag, struct lwp *l) 1308 { 1309 int error; 1310 char namebuf[32]; 1311 struct wsdisplay_font fd; 1312 #ifdef WSDISPLAY_SCROLLSUPPORT 1313 struct wsdisplay_scroll_data *ksdp, *usdp; 1314 #endif 1315 1316 #if NWSKBD > 0 1317 struct wsevsrc *inp; 1318 1319 #ifdef WSDISPLAY_COMPAT_RAWKBD 1320 switch (cmd) { 1321 case WSKBDIO_SETMODE: 1322 scr->scr_rawkbd = (*(int *)data == WSKBD_RAW); 1323 return (wsdisplay_update_rawkbd(sc, scr)); 1324 case WSKBDIO_GETMODE: 1325 *(int *)data = (scr->scr_rawkbd ? 1326 WSKBD_RAW : WSKBD_TRANSLATED); 1327 return (0); 1328 } 1329 #endif 1330 inp = sc->sc_input; 1331 if (inp == NULL) 1332 return (ENXIO); 1333 error = wsevsrc_display_ioctl(inp, cmd, data, flag, l); 1334 if (error != EPASSTHROUGH) 1335 return (error); 1336 #endif /* NWSKBD > 0 */ 1337 1338 switch (cmd) { 1339 case WSDISPLAYIO_GMODE: 1340 if (scr->scr_flags & SCR_GRAPHICS) { 1341 if (scr->scr_flags & SCR_DUMBFB) 1342 *(u_int *)data = WSDISPLAYIO_MODE_DUMBFB; 1343 else 1344 *(u_int *)data = WSDISPLAYIO_MODE_MAPPED; 1345 } else 1346 *(u_int *)data = WSDISPLAYIO_MODE_EMUL; 1347 return (0); 1348 1349 case WSDISPLAYIO_SMODE: 1350 #define d (*(int *)data) 1351 if (d != WSDISPLAYIO_MODE_EMUL && 1352 d != WSDISPLAYIO_MODE_MAPPED && 1353 d != WSDISPLAYIO_MODE_DUMBFB) 1354 return (EINVAL); 1355 1356 if (WSSCREEN_HAS_EMULATOR(scr)) { 1357 scr->scr_flags &= ~SCR_GRAPHICS; 1358 if (d == WSDISPLAYIO_MODE_MAPPED || 1359 d == WSDISPLAYIO_MODE_DUMBFB) 1360 scr->scr_flags |= SCR_GRAPHICS | 1361 ((d == WSDISPLAYIO_MODE_DUMBFB) ? SCR_DUMBFB : 0); 1362 } else if (d == WSDISPLAYIO_MODE_EMUL) 1363 return (EINVAL); 1364 1365 (void)(*sc->sc_accessops->ioctl)(sc->sc_accesscookie, 1366 scr->scr_dconf->emulcookie, cmd, data, flag, l); 1367 1368 return (0); 1369 #undef d 1370 1371 #ifdef WSDISPLAY_SCROLLSUPPORT 1372 #define SETSCROLLLINES(dstp, srcp, dfltp) \ 1373 do { \ 1374 (dstp)->fastlines = ((srcp)->which & \ 1375 WSDISPLAY_SCROLL_DOFASTLINES) ? \ 1376 (srcp)->fastlines : (dfltp)->fastlines; \ 1377 (dstp)->slowlines = ((srcp)->which & \ 1378 WSDISPLAY_SCROLL_DOSLOWLINES) ? \ 1379 (srcp)->slowlines : (dfltp)->slowlines; \ 1380 (dstp)->which = WSDISPLAY_SCROLL_DOALL; \ 1381 } while (0) 1382 1383 1384 case WSDISPLAYIO_DSSCROLL: 1385 usdp = (struct wsdisplay_scroll_data *)data; 1386 ksdp = &sc->sc_scroll_values; 1387 SETSCROLLLINES(ksdp, usdp, ksdp); 1388 return (0); 1389 1390 case WSDISPLAYIO_DGSCROLL: 1391 usdp = (struct wsdisplay_scroll_data *)data; 1392 ksdp = &sc->sc_scroll_values; 1393 SETSCROLLLINES(usdp, ksdp, ksdp); 1394 return (0); 1395 #else 1396 case WSDISPLAYIO_DSSCROLL: 1397 case WSDISPLAYIO_DGSCROLL: 1398 return ENODEV; 1399 #endif 1400 1401 case WSDISPLAYIO_SFONT: 1402 #define d ((struct wsdisplay_usefontdata *)data) 1403 if (!sc->sc_accessops->load_font) 1404 return (EINVAL); 1405 if (d->name) { 1406 error = copyinstr(d->name, namebuf, sizeof(namebuf), 0); 1407 if (error) 1408 return (error); 1409 fd.name = namebuf; 1410 } else 1411 fd.name = 0; 1412 fd.data = 0; 1413 error = (*sc->sc_accessops->load_font)(sc->sc_accesscookie, 1414 scr->scr_dconf->emulcookie, &fd); 1415 if (!error && WSSCREEN_HAS_EMULATOR(scr)) { 1416 (*scr->scr_dconf->wsemul->reset) 1417 (scr->scr_dconf->wsemulcookie, WSEMUL_SYNCFONT); 1418 if (scr->scr_dconf->wsemul->resize) { 1419 (*scr->scr_dconf->wsemul->resize) 1420 (scr->scr_dconf->wsemulcookie, 1421 scr->scr_dconf->scrdata); 1422 /* update the tty's size */ 1423 scr->scr_tty->t_winsize.ws_row = 1424 scr->scr_dconf->scrdata->nrows; 1425 scr->scr_tty->t_winsize.ws_col = 1426 scr->scr_dconf->scrdata->ncols; 1427 /* send SIGWINCH to the process group on our tty */ 1428 kpreempt_disable(); 1429 ttysig(scr->scr_tty, TTYSIG_PG1, SIGWINCH); 1430 kpreempt_enable(); 1431 } 1432 } 1433 return (error); 1434 #undef d 1435 1436 #ifdef WSDISPLAY_CUSTOM_OUTPUT 1437 case WSDISPLAYIO_GMSGATTRS: 1438 #define d ((struct wsdisplay_msgattrs *)data) 1439 (*scr->scr_dconf->wsemul->getmsgattrs) 1440 (scr->scr_dconf->wsemulcookie, d); 1441 return (0); 1442 #undef d 1443 1444 case WSDISPLAYIO_SMSGATTRS: { 1445 #define d ((struct wsdisplay_msgattrs *)data) 1446 int i; 1447 for (i = 0; i < WSDISPLAY_MAXSCREEN; i++) 1448 if (sc->sc_scr[i] != NULL) 1449 (*sc->sc_scr[i]->scr_dconf->wsemul->setmsgattrs) 1450 (sc->sc_scr[i]->scr_dconf->wsemulcookie, 1451 sc->sc_scr[i]->scr_dconf->scrdata, 1452 d); 1453 } 1454 return (0); 1455 #undef d 1456 #else 1457 case WSDISPLAYIO_GMSGATTRS: 1458 case WSDISPLAYIO_SMSGATTRS: 1459 return (ENODEV); 1460 #endif 1461 case WSDISPLAYIO_SETVERSION: 1462 return wsevent_setversion(&sc->evar, *(int *)data); 1463 } 1464 1465 /* check ioctls for display */ 1466 return ((*sc->sc_accessops->ioctl)(sc->sc_accesscookie, 1467 scr->scr_dconf->emulcookie, cmd, data, flag, l)); 1468 } 1469 1470 int 1471 wsdisplay_stat_ioctl(struct wsdisplay_softc *sc, u_long cmd, void *data, 1472 int flag, struct lwp *l) 1473 { 1474 switch (cmd) { 1475 case WSDISPLAYIO_GETACTIVESCREEN: 1476 *(int*)data = wsdisplay_getactivescreen(sc); 1477 return (0); 1478 } 1479 1480 return (EPASSTHROUGH); 1481 } 1482 1483 int 1484 wsdisplay_cfg_ioctl(struct wsdisplay_softc *sc, u_long cmd, void *data, 1485 int flag, struct lwp *l) 1486 { 1487 int error; 1488 char *type, typebuf[16], *emul, emulbuf[16]; 1489 void *tbuf; 1490 u_int fontsz; 1491 #if defined(COMPAT_14) && NWSKBD > 0 1492 struct wsmux_device wsmuxdata; 1493 #endif 1494 #if NWSKBD > 0 1495 struct wsevsrc *inp; 1496 #endif 1497 1498 switch (cmd) { 1499 case WSDISPLAYIO_ADDSCREEN: 1500 #define d ((struct wsdisplay_addscreendata *)data) 1501 if (d->screentype) { 1502 error = copyinstr(d->screentype, typebuf, 1503 sizeof(typebuf), 0); 1504 if (error) 1505 return (error); 1506 type = typebuf; 1507 } else 1508 type = 0; 1509 if (d->emul) { 1510 error = copyinstr(d->emul, emulbuf, sizeof(emulbuf),0); 1511 if (error) 1512 return (error); 1513 emul = emulbuf; 1514 } else 1515 emul = 0; 1516 1517 if ((error = wsdisplay_addscreen(sc, d->idx, type, emul)) == 0) 1518 wsdisplay_addscreen_print(sc, d->idx, 0); 1519 return (error); 1520 #undef d 1521 case WSDISPLAYIO_DELSCREEN: 1522 #define d ((struct wsdisplay_delscreendata *)data) 1523 return (wsdisplay_delscreen(sc, d->idx, d->flags)); 1524 #undef d 1525 case WSDISPLAYIO_LDFONT: 1526 #define d ((struct wsdisplay_font *)data) 1527 if (!sc->sc_accessops->load_font) 1528 return (EINVAL); 1529 if (d->name) { 1530 error = copyinstr(d->name, typebuf, sizeof(typebuf), 0); 1531 if (error) 1532 return (error); 1533 d->name = typebuf; 1534 } else 1535 d->name = "loaded"; /* ??? */ 1536 fontsz = d->fontheight * d->stride * d->numchars; 1537 if (fontsz > WSDISPLAY_MAXFONTSZ) 1538 return (EINVAL); 1539 1540 tbuf = malloc(fontsz, M_DEVBUF, M_WAITOK); 1541 error = copyin(d->data, tbuf, fontsz); 1542 if (error) { 1543 free(tbuf, M_DEVBUF); 1544 return (error); 1545 } 1546 d->data = tbuf; 1547 error = 1548 (*sc->sc_accessops->load_font)(sc->sc_accesscookie, 0, d); 1549 free(tbuf, M_DEVBUF); 1550 #undef d 1551 return (error); 1552 1553 #if NWSKBD > 0 1554 #ifdef COMPAT_14 1555 case _O_WSDISPLAYIO_SETKEYBOARD: 1556 #define d ((struct wsdisplay_kbddata *)data) 1557 inp = sc->sc_input; 1558 if (inp == NULL) 1559 return (ENXIO); 1560 switch (d->op) { 1561 case _O_WSDISPLAY_KBD_ADD: 1562 if (d->idx == -1) { 1563 d->idx = wskbd_pickfree(); 1564 if (d->idx == -1) 1565 return (ENXIO); 1566 } 1567 wsmuxdata.type = WSMUX_KBD; 1568 wsmuxdata.idx = d->idx; 1569 return (wsevsrc_ioctl(inp, WSMUX_ADD_DEVICE, 1570 &wsmuxdata, flag, l)); 1571 case _O_WSDISPLAY_KBD_DEL: 1572 wsmuxdata.type = WSMUX_KBD; 1573 wsmuxdata.idx = d->idx; 1574 return (wsevsrc_ioctl(inp, WSMUX_REMOVE_DEVICE, 1575 &wsmuxdata, flag, l)); 1576 default: 1577 return (EINVAL); 1578 } 1579 #undef d 1580 #endif 1581 1582 case WSMUXIO_ADD_DEVICE: 1583 #define d ((struct wsmux_device *)data) 1584 if (d->idx == -1 && d->type == WSMUX_KBD) 1585 d->idx = wskbd_pickfree(); 1586 #undef d 1587 /* FALLTHROUGH */ 1588 case WSMUXIO_INJECTEVENT: 1589 case WSMUXIO_REMOVE_DEVICE: 1590 case WSMUXIO_LIST_DEVICES: 1591 inp = sc->sc_input; 1592 if (inp == NULL) 1593 return (ENXIO); 1594 return (wsevsrc_ioctl(inp, cmd, data, flag, l)); 1595 #endif /* NWSKBD > 0 */ 1596 1597 } 1598 return (EPASSTHROUGH); 1599 } 1600 1601 int 1602 wsdisplay_stat_inject(device_t dv, u_int type, int value) 1603 { 1604 struct wsdisplay_softc *sc = device_private(dv); 1605 struct wseventvar *evar; 1606 struct wscons_event event; 1607 1608 evar = &sc->evar; 1609 1610 if (evar == NULL) 1611 return (0); 1612 1613 if (evar->q == NULL) 1614 return (1); 1615 1616 event.type = type; 1617 event.value = value; 1618 if (wsevent_inject(evar, &event, 1) != 0) { 1619 log(LOG_WARNING, "wsdisplay: event queue overflow\n"); 1620 return (1); 1621 } 1622 1623 return (0); 1624 } 1625 1626 paddr_t 1627 wsdisplaymmap(dev_t dev, off_t offset, int prot) 1628 { 1629 struct wsdisplay_softc *sc; 1630 struct wsscreen *scr; 1631 1632 sc = device_lookup_private(&wsdisplay_cd, WSDISPLAYUNIT(dev)); 1633 1634 if (ISWSDISPLAYSTAT(dev)) 1635 return (-1); 1636 1637 if (ISWSDISPLAYCTL(dev)) 1638 return (-1); 1639 1640 if ((scr = sc->sc_scr[WSDISPLAYSCREEN(dev)]) == NULL) 1641 return (-1); 1642 1643 if (!(scr->scr_flags & SCR_GRAPHICS)) 1644 return (-1); 1645 1646 /* pass mmap to display */ 1647 return ((*sc->sc_accessops->mmap)(sc->sc_accesscookie, 1648 scr->scr_dconf->emulcookie, offset, prot)); 1649 } 1650 1651 void 1652 wsdisplaystart(struct tty *tp) 1653 { 1654 struct wsdisplay_softc *sc; 1655 struct wsscreen *scr; 1656 int s, n; 1657 u_char *tbuf; 1658 1659 s = spltty(); 1660 if (tp->t_state & (TS_TIMEOUT | TS_BUSY | TS_TTSTOP)) { 1661 splx(s); 1662 return; 1663 } 1664 sc = device_lookup_private(&wsdisplay_cd, WSDISPLAYUNIT(tp->t_dev)); 1665 if ((scr = sc->sc_scr[WSDISPLAYSCREEN(tp->t_dev)]) == NULL) { 1666 splx(s); 1667 return; 1668 } 1669 1670 if (scr->scr_hold_screen) { 1671 tp->t_state |= TS_TIMEOUT; 1672 splx(s); 1673 return; 1674 } 1675 tp->t_state |= TS_BUSY; 1676 splx(s); 1677 1678 #ifdef DIAGNOSTIC 1679 scr->scr_in_ttyoutput = 1; 1680 #endif 1681 1682 /* 1683 * Drain output from ring buffer. 1684 * The output will normally be in one contiguous chunk, but when the 1685 * ring wraps, it will be in two pieces.. one at the end of the ring, 1686 * the other at the start. For performance, rather than loop here, 1687 * we output one chunk, see if there's another one, and if so, output 1688 * it too. 1689 */ 1690 1691 n = ndqb(&tp->t_outq, 0); 1692 tbuf = tp->t_outq.c_cf; 1693 1694 if (!(scr->scr_flags & SCR_GRAPHICS)) { 1695 KASSERT(WSSCREEN_HAS_EMULATOR(scr)); 1696 (*scr->scr_dconf->wsemul->output)(scr->scr_dconf->wsemulcookie, 1697 tbuf, n, 0); 1698 #ifdef WSDISPLAY_MULTICONS 1699 if (wsdisplay_multicons_enable && 1700 scr->scr_dconf == &wsdisplay_console_conf && 1701 wsdisplay_ocn && wsdisplay_ocn->cn_putc) { 1702 for (int i = 0; i < n; i++) 1703 wsdisplay_ocn->cn_putc( 1704 wsdisplay_ocn->cn_dev, tbuf[i]); 1705 } 1706 #endif 1707 } 1708 ndflush(&tp->t_outq, n); 1709 1710 if ((n = ndqb(&tp->t_outq, 0)) > 0) { 1711 tbuf = tp->t_outq.c_cf; 1712 1713 if (!(scr->scr_flags & SCR_GRAPHICS)) { 1714 KASSERT(WSSCREEN_HAS_EMULATOR(scr)); 1715 (*scr->scr_dconf->wsemul->output) 1716 (scr->scr_dconf->wsemulcookie, tbuf, n, 0); 1717 1718 #ifdef WSDISPLAY_MULTICONS 1719 if (wsdisplay_multicons_enable && 1720 scr->scr_dconf == &wsdisplay_console_conf && 1721 wsdisplay_ocn && wsdisplay_ocn->cn_putc) { 1722 for (int i = 0; i < n; i++) 1723 wsdisplay_ocn->cn_putc( 1724 wsdisplay_ocn->cn_dev, tbuf[i]); 1725 } 1726 #endif 1727 } 1728 ndflush(&tp->t_outq, n); 1729 } 1730 1731 #ifdef DIAGNOSTIC 1732 scr->scr_in_ttyoutput = 0; 1733 #endif 1734 1735 s = spltty(); 1736 tp->t_state &= ~TS_BUSY; 1737 /* Come back if there's more to do */ 1738 if (ttypull(tp)) { 1739 tp->t_state |= TS_TIMEOUT; 1740 callout_schedule(&tp->t_rstrt_ch, (hz > 128) ? (hz / 128) : 1); 1741 } 1742 splx(s); 1743 } 1744 1745 void 1746 wsdisplaystop(struct tty *tp, int flag) 1747 { 1748 int s; 1749 1750 s = spltty(); 1751 if (ISSET(tp->t_state, TS_BUSY)) 1752 if (!ISSET(tp->t_state, TS_TTSTOP)) 1753 SET(tp->t_state, TS_FLUSH); 1754 splx(s); 1755 } 1756 1757 /* Set line parameters. */ 1758 int 1759 wsdisplayparam(struct tty *tp, struct termios *t) 1760 { 1761 1762 tp->t_ispeed = t->c_ispeed; 1763 tp->t_ospeed = t->c_ospeed; 1764 tp->t_cflag = t->c_cflag; 1765 return 0; 1766 } 1767 1768 /* 1769 * Callbacks for the emulation code. 1770 */ 1771 void 1772 wsdisplay_emulbell(void *v) 1773 { 1774 struct wsscreen *scr = v; 1775 1776 if (scr == NULL) /* console, before real attach */ 1777 return; 1778 1779 if (scr->scr_flags & SCR_GRAPHICS) /* can this happen? */ 1780 return; 1781 1782 (void) wsdisplay_internal_ioctl(scr->sc, scr, WSKBDIO_BELL, NULL, 1783 FWRITE, NULL); 1784 } 1785 1786 void 1787 wsdisplay_emulinput(void *v, const u_char *data, u_int count) 1788 { 1789 struct wsscreen *scr = v; 1790 struct tty *tp; 1791 int (*ifcn)(int, struct tty *); 1792 1793 if (v == NULL) /* console, before real attach */ 1794 return; 1795 1796 if (scr->scr_flags & SCR_GRAPHICS) /* XXX can't happen */ 1797 return; 1798 if (!WSSCREEN_HAS_TTY(scr)) 1799 return; 1800 1801 tp = scr->scr_tty; 1802 1803 /* 1804 * XXX bad hack to work around locking problems in tty.c: 1805 * ttyinput() will try to lock again, causing deadlock. 1806 * We assume that wsdisplay_emulinput() can only be called 1807 * from within wsdisplaystart(), and thus the tty lock 1808 * is already held. Use an entry point which doesn't lock. 1809 */ 1810 KASSERT(scr->scr_in_ttyoutput); 1811 ifcn = tp->t_linesw->l_rint; 1812 if (ifcn == ttyinput) 1813 ifcn = ttyinput_wlock; 1814 1815 while (count-- > 0) 1816 (*ifcn)(*data++, tp); 1817 } 1818 1819 /* 1820 * Calls from the keyboard interface. 1821 */ 1822 void 1823 wsdisplay_kbdinput(device_t dv, keysym_t ks) 1824 { 1825 struct wsdisplay_softc *sc = device_private(dv); 1826 struct wsscreen *scr; 1827 const char *dp; 1828 int count; 1829 struct tty *tp; 1830 1831 KASSERT(sc != NULL); 1832 1833 scr = sc->sc_focus; 1834 1835 if (!scr || !WSSCREEN_HAS_TTY(scr)) 1836 return; 1837 1838 tp = scr->scr_tty; 1839 1840 if (KS_GROUP(ks) == KS_GROUP_Plain && KS_VALUE(ks) <= 0x7f) 1841 (*tp->t_linesw->l_rint)(KS_VALUE(ks), tp); 1842 else if (WSSCREEN_HAS_EMULATOR(scr)) { 1843 count = (*scr->scr_dconf->wsemul->translate) 1844 (scr->scr_dconf->wsemulcookie, ks, &dp); 1845 while (count-- > 0) 1846 (*tp->t_linesw->l_rint)((unsigned char)(*dp++), tp); 1847 } 1848 } 1849 1850 #if defined(WSDISPLAY_COMPAT_RAWKBD) 1851 int 1852 wsdisplay_update_rawkbd(struct wsdisplay_softc *sc, struct wsscreen *scr) 1853 { 1854 #if NWSKBD > 0 1855 int s, raw, data, error; 1856 struct wsevsrc *inp; 1857 1858 s = spltty(); 1859 1860 raw = (scr ? scr->scr_rawkbd : 0); 1861 1862 if (scr != sc->sc_focus || 1863 sc->sc_rawkbd == raw) { 1864 splx(s); 1865 return (0); 1866 } 1867 1868 data = raw ? WSKBD_RAW : WSKBD_TRANSLATED; 1869 inp = sc->sc_input; 1870 if (inp == NULL) { 1871 splx(s); 1872 return (ENXIO); 1873 } 1874 error = wsevsrc_display_ioctl(inp, WSKBDIO_SETMODE, &data, 0, 0); 1875 if (!error) 1876 sc->sc_rawkbd = raw; 1877 splx(s); 1878 return (error); 1879 #else 1880 return (0); 1881 #endif 1882 } 1883 #endif 1884 1885 static void 1886 wsdisplay_switch3_cb(void *arg, int error, int waitok) 1887 { 1888 device_t dv = arg; 1889 1890 wsdisplay_switch3(dv, error, waitok); 1891 } 1892 1893 static int 1894 wsdisplay_switch3(device_t dv, int error, int waitok) 1895 { 1896 struct wsdisplay_softc *sc = device_private(dv); 1897 int no; 1898 struct wsscreen *scr; 1899 1900 if (!(sc->sc_flags & SC_SWITCHPENDING)) { 1901 aprint_error_dev(dv, "wsdisplay_switch3: not switching\n"); 1902 return (EINVAL); 1903 } 1904 1905 no = sc->sc_screenwanted; 1906 if (no < 0 || no >= WSDISPLAY_MAXSCREEN) 1907 panic("wsdisplay_switch3: invalid screen %d", no); 1908 scr = sc->sc_scr[no]; 1909 if (!scr) { 1910 aprint_error_dev(dv, 1911 "wsdisplay_switch3: screen %d disappeared\n", no); 1912 error = ENXIO; 1913 } 1914 1915 if (error) { 1916 /* try to recover, avoid recursion */ 1917 1918 if (sc->sc_oldscreen == WSDISPLAY_NULLSCREEN) { 1919 aprint_error_dev(dv, "wsdisplay_switch3: giving up\n"); 1920 sc->sc_focus = 0; 1921 #ifdef WSDISPLAY_COMPAT_RAWKBD 1922 wsdisplay_update_rawkbd(sc, 0); 1923 #endif 1924 sc->sc_flags &= ~SC_SWITCHPENDING; 1925 return (error); 1926 } 1927 1928 sc->sc_screenwanted = sc->sc_oldscreen; 1929 sc->sc_oldscreen = WSDISPLAY_NULLSCREEN; 1930 return (wsdisplay_switch1(dv, 0, waitok)); 1931 } 1932 1933 if (scr->scr_syncops && !error) 1934 sc->sc_flags |= SC_XATTACHED; 1935 1936 sc->sc_flags &= ~SC_SWITCHPENDING; 1937 1938 if (!error && (scr->scr_flags & SCR_WAITACTIVE)) 1939 wakeup(scr); 1940 return (error); 1941 } 1942 1943 static void 1944 wsdisplay_switch2_cb(void *arg, int error, int waitok) 1945 { 1946 device_t dv = arg; 1947 1948 wsdisplay_switch2(dv, error, waitok); 1949 } 1950 1951 static int 1952 wsdisplay_switch2(device_t dv, int error, int waitok) 1953 { 1954 struct wsdisplay_softc *sc = device_private(dv); 1955 int no; 1956 struct wsscreen *scr; 1957 1958 if (!(sc->sc_flags & SC_SWITCHPENDING)) { 1959 aprint_error_dev(dv, "wsdisplay_switch2: not switching\n"); 1960 return (EINVAL); 1961 } 1962 1963 no = sc->sc_screenwanted; 1964 if (no < 0 || no >= WSDISPLAY_MAXSCREEN) 1965 panic("wsdisplay_switch2: invalid screen %d", no); 1966 scr = sc->sc_scr[no]; 1967 if (!scr) { 1968 aprint_error_dev(dv, 1969 "wsdisplay_switch2: screen %d disappeared\n", no); 1970 error = ENXIO; 1971 } 1972 1973 if (error) { 1974 /* try to recover, avoid recursion */ 1975 1976 if (sc->sc_oldscreen == WSDISPLAY_NULLSCREEN) { 1977 aprint_error_dev(dv, "wsdisplay_switch2: giving up\n"); 1978 sc->sc_focus = 0; 1979 sc->sc_flags &= ~SC_SWITCHPENDING; 1980 return (error); 1981 } 1982 1983 sc->sc_screenwanted = sc->sc_oldscreen; 1984 sc->sc_oldscreen = WSDISPLAY_NULLSCREEN; 1985 return (wsdisplay_switch1(dv, 0, waitok)); 1986 } 1987 1988 sc->sc_focusidx = no; 1989 sc->sc_focus = scr; 1990 1991 #ifdef WSDISPLAY_COMPAT_RAWKBD 1992 (void) wsdisplay_update_rawkbd(sc, scr); 1993 #endif 1994 /* keyboard map??? */ 1995 1996 if (scr->scr_syncops && 1997 !(sc->sc_isconsole && wsdisplay_cons_pollmode)) { 1998 error = (*scr->scr_syncops->attach)(scr->scr_synccookie, waitok, 1999 wsdisplay_switch3_cb, dv); 2000 if (error == EAGAIN) { 2001 /* switch will be done asynchronously */ 2002 return (0); 2003 } 2004 } 2005 2006 return (wsdisplay_switch3(dv, error, waitok)); 2007 } 2008 2009 static void 2010 wsdisplay_switch1_cb(void *arg, int error, int waitok) 2011 { 2012 device_t dv = arg; 2013 2014 wsdisplay_switch1(dv, error, waitok); 2015 } 2016 2017 static int 2018 wsdisplay_switch1(device_t dv, int error, int waitok) 2019 { 2020 struct wsdisplay_softc *sc = device_private(dv); 2021 int no; 2022 struct wsscreen *scr; 2023 2024 if (!(sc->sc_flags & SC_SWITCHPENDING)) { 2025 aprint_error_dev(dv, "wsdisplay_switch1: not switching\n"); 2026 return (EINVAL); 2027 } 2028 2029 no = sc->sc_screenwanted; 2030 if (no == WSDISPLAY_NULLSCREEN) { 2031 sc->sc_flags &= ~SC_SWITCHPENDING; 2032 if (!error) { 2033 sc->sc_flags &= ~SC_XATTACHED; 2034 sc->sc_focus = 0; 2035 } 2036 wakeup(sc); 2037 return (error); 2038 } 2039 if (no < 0 || no >= WSDISPLAY_MAXSCREEN) 2040 panic("wsdisplay_switch1: invalid screen %d", no); 2041 scr = sc->sc_scr[no]; 2042 if (!scr) { 2043 aprint_error_dev(dv, 2044 "wsdisplay_switch1: screen %d disappeared\n", no); 2045 error = ENXIO; 2046 } 2047 2048 if (error) { 2049 sc->sc_flags &= ~SC_SWITCHPENDING; 2050 return (error); 2051 } 2052 2053 sc->sc_flags &= ~SC_XATTACHED; 2054 2055 error = (*sc->sc_accessops->show_screen)(sc->sc_accesscookie, 2056 scr->scr_dconf->emulcookie, 2057 waitok, 2058 sc->sc_isconsole && wsdisplay_cons_pollmode ? 0 : wsdisplay_switch2_cb, dv); 2059 if (error == EAGAIN) { 2060 /* switch will be done asynchronously */ 2061 return (0); 2062 } 2063 2064 return (wsdisplay_switch2(dv, error, waitok)); 2065 } 2066 2067 int 2068 wsdisplay_switch(device_t dv, int no, int waitok) 2069 { 2070 struct wsdisplay_softc *sc = device_private(dv); 2071 int s, res = 0; 2072 struct wsscreen *scr; 2073 2074 if (no != WSDISPLAY_NULLSCREEN) { 2075 if ((no < 0 || no >= WSDISPLAY_MAXSCREEN)) 2076 return (EINVAL); 2077 if (sc->sc_scr[no] == NULL) 2078 return (ENXIO); 2079 } 2080 2081 wsdisplay_stat_inject(dv, WSCONS_EVENT_SCREEN_SWITCH, no); 2082 2083 s = spltty(); 2084 2085 if ((sc->sc_focus && no == sc->sc_focusidx) || 2086 (sc->sc_focus == NULL && no == WSDISPLAY_NULLSCREEN)) { 2087 splx(s); 2088 return (0); 2089 } 2090 2091 if (sc->sc_flags & SC_SWITCHPENDING) { 2092 splx(s); 2093 return (EBUSY); 2094 } 2095 2096 sc->sc_flags |= SC_SWITCHPENDING; 2097 sc->sc_screenwanted = no; 2098 2099 splx(s); 2100 2101 scr = sc->sc_focus; 2102 if (!scr) { 2103 sc->sc_oldscreen = WSDISPLAY_NULLSCREEN; 2104 return (wsdisplay_switch1(dv, 0, waitok)); 2105 } else 2106 sc->sc_oldscreen = sc->sc_focusidx; 2107 2108 if (scr->scr_syncops) { 2109 if (!(sc->sc_flags & SC_XATTACHED) || 2110 (sc->sc_isconsole && wsdisplay_cons_pollmode)) { 2111 /* nothing to do here */ 2112 return (wsdisplay_switch1(dv, 0, waitok)); 2113 } 2114 res = (*scr->scr_syncops->detach)(scr->scr_synccookie, waitok, 2115 wsdisplay_switch1_cb, dv); 2116 if (res == EAGAIN) { 2117 /* switch will be done asynchronously */ 2118 return (0); 2119 } 2120 } else if (scr->scr_flags & SCR_GRAPHICS) { 2121 /* no way to save state */ 2122 res = EBUSY; 2123 } 2124 2125 return (wsdisplay_switch1(dv, res, waitok)); 2126 } 2127 2128 void 2129 wsdisplay_reset(device_t dv, enum wsdisplay_resetops op) 2130 { 2131 struct wsdisplay_softc *sc = device_private(dv); 2132 struct wsscreen *scr; 2133 2134 KASSERT(sc != NULL); 2135 scr = sc->sc_focus; 2136 2137 if (!scr) 2138 return; 2139 2140 switch (op) { 2141 case WSDISPLAY_RESETEMUL: 2142 if (!WSSCREEN_HAS_EMULATOR(scr)) 2143 break; 2144 (*scr->scr_dconf->wsemul->reset)(scr->scr_dconf->wsemulcookie, 2145 WSEMUL_RESET); 2146 break; 2147 case WSDISPLAY_RESETCLOSE: 2148 wsdisplay_closescreen(sc, scr); 2149 break; 2150 } 2151 } 2152 2153 2154 bool 2155 wsdisplay_isconsole(struct wsdisplay_softc *sc) 2156 { 2157 return sc->sc_isconsole; 2158 } 2159 2160 /* 2161 * Interface for (external) VT switch / process synchronization code 2162 */ 2163 int 2164 wsscreen_attach_sync(struct wsscreen *scr, const struct wscons_syncops *ops, 2165 void *cookie) 2166 { 2167 if (scr->scr_syncops) { 2168 /* 2169 * The screen is already claimed. 2170 * Check if the owner is still alive. 2171 */ 2172 if ((*scr->scr_syncops->check)(scr->scr_synccookie)) 2173 return (EBUSY); 2174 } 2175 scr->scr_syncops = ops; 2176 scr->scr_synccookie = cookie; 2177 if (scr == scr->sc->sc_focus) 2178 scr->sc->sc_flags |= SC_XATTACHED; 2179 return (0); 2180 } 2181 2182 int 2183 wsscreen_detach_sync(struct wsscreen *scr) 2184 { 2185 if (!scr->scr_syncops) 2186 return (EINVAL); 2187 scr->scr_syncops = 0; 2188 if (scr == scr->sc->sc_focus) 2189 scr->sc->sc_flags &= ~SC_XATTACHED; 2190 return (0); 2191 } 2192 2193 int 2194 wsscreen_lookup_sync(struct wsscreen *scr, 2195 const struct wscons_syncops *ops, /* used as ID */ 2196 void **cookiep) 2197 { 2198 if (!scr->scr_syncops || ops != scr->scr_syncops) 2199 return (EINVAL); 2200 *cookiep = scr->scr_synccookie; 2201 return (0); 2202 } 2203 2204 /* 2205 * Interface to virtual screen stuff 2206 */ 2207 int 2208 wsdisplay_maxscreenidx(struct wsdisplay_softc *sc) 2209 { 2210 return (WSDISPLAY_MAXSCREEN - 1); 2211 } 2212 2213 int 2214 wsdisplay_screenstate(struct wsdisplay_softc *sc, int idx) 2215 { 2216 if (idx < 0 || idx >= WSDISPLAY_MAXSCREEN) 2217 return (EINVAL); 2218 if (!sc->sc_scr[idx]) 2219 return (ENXIO); 2220 return ((sc->sc_scr[idx]->scr_flags & SCR_OPEN) ? EBUSY : 0); 2221 } 2222 2223 int 2224 wsdisplay_getactivescreen(struct wsdisplay_softc *sc) 2225 { 2226 return (sc->sc_focus ? sc->sc_focusidx : WSDISPLAY_NULLSCREEN); 2227 } 2228 2229 int 2230 wsscreen_switchwait(struct wsdisplay_softc *sc, int no) 2231 { 2232 struct wsscreen *scr; 2233 int s, res = 0; 2234 2235 if (no == WSDISPLAY_NULLSCREEN) { 2236 s = spltty(); 2237 while (sc->sc_focus && res == 0) { 2238 res = tsleep(sc, PCATCH, "wswait", 0); 2239 } 2240 splx(s); 2241 return (res); 2242 } 2243 2244 if (no < 0 || no >= WSDISPLAY_MAXSCREEN) 2245 return (ENXIO); 2246 scr = sc->sc_scr[no]; 2247 if (!scr) 2248 return (ENXIO); 2249 2250 s = spltty(); 2251 if (scr != sc->sc_focus) { 2252 scr->scr_flags |= SCR_WAITACTIVE; 2253 res = tsleep(scr, PCATCH, "wswait", 0); 2254 if (scr != sc->sc_scr[no]) 2255 res = ENXIO; /* disappeared in the meantime */ 2256 else 2257 scr->scr_flags &= ~SCR_WAITACTIVE; 2258 } 2259 splx(s); 2260 return (res); 2261 } 2262 2263 void 2264 wsdisplay_kbdholdscreen(device_t dv, int hold) 2265 { 2266 struct wsdisplay_softc *sc = device_private(dv); 2267 struct wsscreen *scr; 2268 2269 scr = sc->sc_focus; 2270 2271 if (!scr) 2272 return; 2273 2274 if (hold) 2275 scr->scr_hold_screen = 1; 2276 else { 2277 scr->scr_hold_screen = 0; 2278 callout_schedule(&scr->scr_tty->t_rstrt_ch, 0); 2279 } 2280 } 2281 2282 #if NWSKBD > 0 2283 void 2284 wsdisplay_set_console_kbd(struct wsevsrc *src) 2285 { 2286 if (wsdisplay_console_device == NULL) { 2287 src->me_dispdv = NULL; 2288 return; 2289 } 2290 #if NWSMUX > 0 2291 if (wsmux_attach_sc((struct wsmux_softc *) 2292 wsdisplay_console_device->sc_input, src)) { 2293 src->me_dispdv = NULL; 2294 return; 2295 } 2296 #else 2297 wsdisplay_console_device->sc_input = src; 2298 #endif 2299 src->me_dispdv = wsdisplay_console_device->sc_dev; 2300 } 2301 #endif /* NWSKBD > 0 */ 2302 2303 /* 2304 * Console interface. 2305 */ 2306 void 2307 wsdisplay_cnputc(dev_t dev, int i) 2308 { 2309 struct wsscreen_internal *dc; 2310 u_char c = i; 2311 2312 if (!wsdisplay_console_initted) 2313 return; 2314 2315 if ((wsdisplay_console_device != NULL) && 2316 (wsdisplay_console_device->sc_scr[0] != NULL) && 2317 (wsdisplay_console_device->sc_scr[0]->scr_flags & SCR_GRAPHICS)) 2318 return; 2319 2320 dc = &wsdisplay_console_conf; 2321 (*dc->wsemul->output)(dc->wsemulcookie, &c, 1, 1); 2322 2323 #ifdef WSDISPLAY_MULTICONS 2324 if (!wsdisplay_multicons_suspended && 2325 wsdisplay_multicons_enable && wsdisplay_ocn && wsdisplay_ocn->cn_putc) 2326 wsdisplay_ocn->cn_putc(wsdisplay_ocn->cn_dev, i); 2327 #endif 2328 } 2329 2330 static int 2331 wsdisplay_getc(dev_t dev) 2332 { 2333 int c; 2334 2335 if (wsdisplay_cons_kbd_getc) { 2336 c = wsdisplay_cons_kbd_getc(wsdisplay_cons.cn_dev); 2337 if (c >= 0) 2338 return c; 2339 } 2340 2341 #ifdef WSDISPLAY_MULTICONS 2342 if (!wsdisplay_multicons_suspended && 2343 wsdisplay_multicons_enable && wsdisplay_ocn && wsdisplay_ocn->cn_getc) { 2344 c = wsdisplay_ocn->cn_getc(wsdisplay_ocn->cn_dev); 2345 if (c >= 0) 2346 return c; 2347 } 2348 #endif 2349 return -1; 2350 } 2351 2352 static void 2353 wsdisplay_pollc(dev_t dev, int on) 2354 { 2355 2356 wsdisplay_cons_pollmode = on; 2357 2358 /* notify to fb drivers */ 2359 if (wsdisplay_console_device != NULL && 2360 wsdisplay_console_device->sc_accessops->pollc != NULL) 2361 (*wsdisplay_console_device->sc_accessops->pollc) 2362 (wsdisplay_console_device->sc_accesscookie, on); 2363 2364 /* notify to kbd drivers */ 2365 if (wsdisplay_cons_kbd_pollc) 2366 (*wsdisplay_cons_kbd_pollc)(NODEV, on); 2367 2368 #ifdef WSDISPLAY_MULTICONS 2369 /* notify to old console driver */ 2370 if (!wsdisplay_multicons_suspended && 2371 wsdisplay_multicons_enable && wsdisplay_ocn && wsdisplay_ocn->cn_pollc) 2372 wsdisplay_ocn->cn_pollc(wsdisplay_ocn->cn_dev, on); 2373 #endif 2374 } 2375 2376 void 2377 wsdisplay_set_cons_kbd(int (*get)(dev_t), void (*poll)(dev_t, int), 2378 void (*bell)(dev_t, u_int, u_int, u_int)) 2379 { 2380 wsdisplay_cons.cn_bell = bell; 2381 wsdisplay_cons_kbd_getc = get; 2382 wsdisplay_cons_kbd_pollc = poll; 2383 } 2384 2385 void 2386 wsdisplay_unset_cons_kbd(void) 2387 { 2388 wsdisplay_cons.cn_bell = NULL; 2389 wsdisplay_cons_kbd_getc = NULL; 2390 wsdisplay_cons_kbd_pollc = NULL; 2391 } 2392 2393 #ifdef WSDISPLAY_MULTICONS 2394 void 2395 wsdisplay_multicons_suspend(bool suspend) 2396 { 2397 wsdisplay_multicons_suspended = suspend; 2398 } 2399 #endif 2400 2401 #ifdef WSDISPLAY_MULTICONS 2402 SYSCTL_SETUP(sysctl_hw_wsdisplay_setup, "sysctl hw.wsdisplay subtree setup") 2403 { 2404 const struct sysctlnode *wsdisplay_node; 2405 2406 if (sysctl_createv(clog, 0, NULL, &wsdisplay_node, 2407 CTLFLAG_PERMANENT, 2408 CTLTYPE_NODE, "wsdisplay", NULL, 2409 NULL, 0, NULL, 0, 2410 CTL_HW, CTL_CREATE, CTL_EOL) != 0) 2411 return; 2412 2413 sysctl_createv(clog, 0, NULL, NULL, 2414 CTLFLAG_READWRITE, 2415 CTLTYPE_BOOL, "multicons", 2416 SYSCTL_DESCR("Enable wsdisplay multicons"), 2417 NULL, 0, &wsdisplay_multicons_enable, 0, 2418 CTL_HW, wsdisplay_node->sysctl_num, CTL_CREATE, CTL_EOL); 2419 } 2420 #endif 2421
Indexes created Thu Oct 23 18:09:57 GMT 2025