wsmux.c revision 1.14
1 /* 2 TODO: 3 use method to get sc of muxee, common code for add&rem 4 */ 5 6 /* $NetBSD: wsmux.c,v 1.14 2001/10/24 14:07:33 augustss Exp $ */ 7 8 /* 9 * Copyright (c) 1998 The NetBSD Foundation, Inc. 10 * All rights reserved. 11 * 12 * Author: Lennart Augustsson <augustss (at) carlstedt.se> 13 * Carlstedt Research & Technology 14 * 15 * Redistribution and use in source and binary forms, with or without 16 * modification, are permitted provided that the following conditions 17 * are met: 18 * 1. Redistributions of source code must retain the above copyright 19 * notice, this list of conditions and the following disclaimer. 20 * 2. Redistributions in binary form must reproduce the above copyright 21 * notice, this list of conditions and the following disclaimer in the 22 * documentation and/or other materials provided with the distribution. 23 * 3. All advertising materials mentioning features or use of this software 24 * must display the following acknowledgement: 25 * This product includes software developed by the NetBSD 26 * Foundation, Inc. and its contributors. 27 * 4. Neither the name of The NetBSD Foundation nor the names of its 28 * contributors may be used to endorse or promote products derived 29 * from this software without specific prior written permission. 30 * 31 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 32 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 33 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 34 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 35 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 36 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 37 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 38 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 39 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 40 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 41 * POSSIBILITY OF SUCH DAMAGE. 42 */ 43 44 /* 45 * wscons mux device. 46 * 47 * The mux device is a collection of real mice and keyboards and acts as 48 * a merge point for all the events from the different real devices. 49 */ 50 51 #include "wsdisplay.h" 52 #include "wsmux.h" 53 #include "wskbd.h" 54 #include "wsmouse.h" 55 56 #include <sys/param.h> 57 #include <sys/conf.h> 58 #include <sys/ioctl.h> 59 #include <sys/fcntl.h> 60 #include <sys/kernel.h> 61 #include <sys/malloc.h> 62 #include <sys/proc.h> 63 #include <sys/queue.h> 64 #include <sys/syslog.h> 65 #include <sys/systm.h> 66 #include <sys/tty.h> 67 #include <sys/signalvar.h> 68 #include <sys/device.h> 69 70 #include "opt_wsdisplay_compat.h" 71 72 #include <dev/wscons/wsconsio.h> 73 #include <dev/wscons/wseventvar.h> 74 #include <dev/wscons/wscons_callbacks.h> 75 #include <dev/wscons/wsmuxvar.h> 76 77 #ifdef WSMUX_DEBUG 78 #define DPRINTF(x) if (wsmuxdebug) printf x 79 int wsmuxdebug = 0; 80 #else 81 #define DPRINTF(x) 82 #endif 83 84 /* 85 * The wsmux pseudo device is used to multiplex events from several wsmouse, 86 * wskbd, and/or wsmux devices together. 87 * The devices connected together form a tree with muxes in the interior 88 * and real devices (mouse and kbd) at the leaves. The special case of 89 * a tree with one node (mux or other) is supported as well. 90 * Only the device at the root of the tree can be opened (if a non-root 91 * device is opened the subtree rooted at that point is severed from the 92 * containing tree). When the root is opened it allocates a wseventvar 93 * struct which all the nodes in the tree will send their events too. 94 * An ioctl() performed on the root is propagated to all the nodes. 95 * There are also ioctl() operations to add and remove nodes from a tree. 96 */ 97 98 static int wsmux_mux_open(struct wsevsrc *, struct wseventvar *); 99 static int wsmux_mux_close(struct wsevsrc *); 100 101 static void wsmux_do_open(struct wsmux_softc *, struct wseventvar *); 102 103 static void wsmux_do_close(struct wsmux_softc *); 104 #if NWSDISPLAY > 0 105 static int wsmux_set_display(struct device *, struct wsevsrc *); 106 #else 107 #define wsmux_set_display NULL 108 #endif 109 110 static int wsmux_do_displayioctl(struct device *dev, u_long cmd, 111 caddr_t data, int flag, struct proc *p); 112 static int wsmux_do_ioctl(struct device *, u_long, caddr_t,int,struct proc *); 113 114 static int wsmux_add_mux(int, struct wsmux_softc *); 115 116 void wsmuxattach(int); 117 118 #define WSMUXDEV(n) ((n) & 0x7f) 119 #define WSMUXCTL(n) ((n) & 0x80) 120 121 cdev_decl(wsmux); 122 123 struct wssrcops wsmux_srcops = { 124 WSMUX_MUX, 125 wsmux_mux_open, wsmux_mux_close, wsmux_do_ioctl, wsmux_do_displayioctl, 126 wsmux_set_display 127 }; 128 129 /* From upper level */ 130 void 131 wsmuxattach(int n) 132 { 133 } 134 135 /* Keep track of all muxes that have been allocated */ 136 static int nwsmux = 0; 137 static struct wsmux_softc **wsmuxdevs; 138 139 /* Return mux n, create if necessary */ 140 struct wsmux_softc * 141 wsmux_getmux(int n) 142 { 143 struct wsmux_softc *sc; 144 int i; 145 void *new; 146 147 n = WSMUXDEV(n); /* limit range */ 148 149 /* Make sure there is room for mux n in the table */ 150 if (n >= nwsmux) { 151 i = nwsmux; 152 nwsmux = n + 1; 153 if (i != 0) 154 new = realloc(wsmuxdevs, nwsmux * sizeof (*wsmuxdevs), 155 M_DEVBUF, M_NOWAIT); 156 else 157 new = malloc(nwsmux * sizeof (*wsmuxdevs), 158 M_DEVBUF, M_NOWAIT); 159 if (new == NULL) { 160 printf("wsmux_getmux: no memory for mux %d\n", n); 161 return (NULL); 162 } 163 wsmuxdevs = new; 164 for (; i < nwsmux; i++) 165 wsmuxdevs[i] = NULL; 166 } 167 168 sc = wsmuxdevs[n]; 169 if (sc == NULL) { 170 sc = wsmux_create("wsmux", n); 171 if (sc == NULL) 172 printf("wsmux: attach out of memory\n"); 173 wsmuxdevs[n] = sc; 174 } 175 return (sc); 176 } 177 178 /* 179 * open() of the pseudo device from device table. 180 */ 181 int 182 wsmuxopen(dev_t dev, int flags, int mode, struct proc *p) 183 { 184 struct wsmux_softc *sc; 185 struct wseventvar *evar; 186 int minr, unit; 187 188 minr = minor(dev); 189 unit = WSMUXDEV(minr); 190 sc = wsmux_getmux(unit); 191 if (sc == NULL) 192 return (ENXIO); 193 194 DPRINTF(("wsmuxopen: %s: sc=%p p=%p\n", sc->sc_base.me_dv.dv_xname, 195 sc, p)); 196 197 if (WSMUXCTL(minr)) { 198 /* This is the control device which does not allow reads. */ 199 if (flags & FREAD) 200 return (EINVAL); 201 return (0); 202 } 203 if ((flags & (FREAD | FWRITE)) == FWRITE) 204 /* Allow write only open */ 205 return (0); 206 207 if (sc->sc_base.me_parent != NULL) { 208 /* Grab the mux out of the greedy hands of the parent mux. */ 209 wsmux_detach_sc(&sc->sc_base); 210 } 211 212 if (sc->sc_base.me_evp != NULL) 213 /* Already open. */ 214 return (EBUSY); 215 216 evar = wsevent_alloc(); 217 evar->io = p; 218 sc->sc_rawkbd = 0; 219 220 wsmux_do_open(sc, evar); 221 222 return (0); 223 } 224 225 /* 226 * Open of a mux via the parent mux. 227 */ 228 int 229 wsmux_mux_open(struct wsevsrc *me, struct wseventvar *evar) 230 { 231 struct wsmux_softc *sc = (struct wsmux_softc *)me; 232 233 #ifdef DIAGNOSTIC 234 if (sc->sc_base.me_evp != NULL) { 235 printf("wsmux_mux_open: busy\n"); 236 return (EBUSY); 237 } 238 if (sc->sc_base.me_parent == NULL) { 239 printf("wsmux_mux_open: no parent\n"); 240 return (EINVAL); 241 } 242 #endif 243 244 wsmux_do_open(sc, evar); 245 246 return (0); 247 } 248 249 /* Common part of opening a mux. */ 250 void 251 wsmux_do_open(struct wsmux_softc *sc, struct wseventvar *evar) 252 { 253 struct wsevsrc *me; 254 255 sc->sc_base.me_evp = evar; /* remember event variable, mark as open */ 256 257 /* Open all children. */ 258 CIRCLEQ_FOREACH(me, &sc->sc_cld, me_next) { 259 DPRINTF(("wsmuxopen: %s: m=%p dev=%s\n", 260 sc->sc_base.me_dv.dv_xname, me, me->me_dv.dv_xname)); 261 #ifdef DIAGNOSTIC 262 if (me->me_evp != NULL) { 263 printf("wsmuxopen: dev already in use\n"); 264 continue; 265 } 266 if (me->me_parent != sc) { 267 printf("wsmux_do_open: bad child=%p\n", me); 268 continue; 269 } 270 { 271 int error = me->me_ops->dopen(me, evar); 272 if (error) { 273 DPRINTF(("wsmuxopen: open failed %d\n", error)); 274 } 275 } 276 #else 277 /* ignore errors, failing children will not be marked open */ 278 (void)me->me_ops->dopen(me, evar); 279 #endif 280 } 281 } 282 283 /* 284 * close() of the pseudo device from device table. 285 */ 286 int 287 wsmuxclose(dev_t dev, int flags, int mode, struct proc *p) 288 { 289 int minr = minor(dev); 290 struct wsmux_softc *sc = wsmuxdevs[WSMUXDEV(minr)]; 291 struct wseventvar *evar = sc->sc_base.me_evp; 292 293 if (WSMUXCTL(minr)) 294 /* control device */ 295 return (0); 296 if (evar == NULL) 297 /* Not open for read */ 298 return (0); 299 300 sc->sc_base.me_evp = NULL; 301 wsevent_free(evar); 302 wsmux_do_close(sc); 303 return (0); 304 } 305 306 /* 307 * Close of a mux via the parent mux. 308 */ 309 int 310 wsmux_mux_close(struct wsevsrc *me) 311 { 312 me->me_evp = NULL; 313 wsmux_do_close((struct wsmux_softc *)me); 314 return (0); 315 } 316 317 /* Common part of closing a mux. */ 318 void 319 wsmux_do_close(struct wsmux_softc *sc) 320 { 321 struct wsevsrc *me; 322 323 DPRINTF(("wsmuxclose: %s: sc=%p\n", sc->sc_base.me_dv.dv_xname, sc)); 324 325 /* Close all the children. */ 326 CIRCLEQ_FOREACH(me, &sc->sc_cld, me_next) { 327 DPRINTF(("wsmuxclose %s: m=%p dev=%s\n", 328 sc->sc_base.me_dv.dv_xname, me, me->me_dv.dv_xname)); 329 #ifdef DIAGNOSTIC 330 if (me->me_parent != sc) { 331 printf("wsmuxclose: bad child=%p\n", me); 332 continue; 333 } 334 #endif 335 (void)me->me_ops->dclose(me); 336 me->me_evp = NULL; 337 } 338 } 339 340 /* 341 * read() of the pseudo device from device table. 342 */ 343 int 344 wsmuxread(dev_t dev, struct uio *uio, int flags) 345 { 346 int minr = minor(dev); 347 struct wsmux_softc *sc = wsmuxdevs[WSMUXDEV(minr)]; 348 349 if (WSMUXCTL(minr)) { 350 /* control device */ 351 return (EINVAL); 352 } 353 354 if (sc->sc_base.me_evp == NULL) { 355 #ifdef DIAGNOSTIC 356 /* XXX can we get here? */ 357 printf("wsmuxread: not open\n"); 358 #endif 359 return (EINVAL); 360 } 361 362 return (wsevent_read(sc->sc_base.me_evp, uio, flags)); 363 } 364 365 /* 366 * ioctl of the pseudo device from device table. 367 */ 368 int 369 wsmuxioctl(dev_t dev, u_long cmd, caddr_t data, int flag, struct proc *p) 370 { 371 int u = WSMUXDEV(minor(dev)); 372 373 return wsmux_do_ioctl(&wsmuxdevs[u]->sc_base.me_dv, cmd, data, flag, p); 374 } 375 376 /* 377 * ioctl of a mux via the parent mux, continuation of wsmuxioctl(). 378 */ 379 int 380 wsmux_do_ioctl(struct device *dv, u_long cmd, caddr_t data, int flag, 381 struct proc *p) 382 { 383 struct wsmux_softc *sc = (struct wsmux_softc *)dv; 384 struct wsevsrc *me; 385 int error, ok; 386 int s, put, get, n; 387 struct wseventvar *evar; 388 struct wscons_event *ev; 389 struct timeval thistime; 390 struct wsmux_device_list *l; 391 392 DPRINTF(("wsmux_do_ioctl: %s: sc=%p, cmd=%08lx\n", 393 sc->sc_base.me_dv.dv_xname, sc, cmd)); 394 395 switch (cmd) { 396 case WSMUXIO_INJECTEVENT: 397 /* Inject an event, e.g., from moused. */ 398 DPRINTF(("%s: inject\n", sc->sc_base.me_dv.dv_xname)); 399 400 evar = sc->sc_base.me_evp; 401 if (evar == NULL) /* XXX is this an error? */ 402 return (EACCES); 403 404 s = spltty(); 405 get = evar->get; 406 put = evar->put; 407 if (++put % WSEVENT_QSIZE == get) { 408 put--; 409 splx(s); 410 return (ENOSPC); 411 } 412 if (put >= WSEVENT_QSIZE) 413 put = 0; 414 ev = &evar->q[put]; 415 *ev = *(struct wscons_event *)data; 416 microtime(&thistime); 417 TIMEVAL_TO_TIMESPEC(&thistime, &ev->time); 418 evar->put = put; 419 WSEVENT_WAKEUP(evar); 420 splx(s); 421 return (0); 422 case WSMUXIO_ADD_DEVICE: 423 #define d ((struct wsmux_device *)data) 424 DPRINTF(("%s: add type=%d, no=%d\n", sc->sc_base.me_dv.dv_xname, 425 d->type, d->idx)); 426 switch (d->type) { 427 #if NWSMOUSE > 0 428 case WSMUX_MOUSE: 429 return (wsmouse_add_mux(d->idx, sc)); 430 #endif 431 #if NWSKBD > 0 432 case WSMUX_KBD: 433 return (wskbd_add_mux(d->idx, sc)); 434 #endif 435 case WSMUX_MUX: 436 return (wsmux_add_mux(d->idx, sc)); 437 default: 438 return (EINVAL); 439 } 440 case WSMUXIO_REMOVE_DEVICE: 441 DPRINTF(("%s: rem type=%d, no=%d\n", sc->sc_base.me_dv.dv_xname, 442 d->type, d->idx)); 443 /* Locate the device */ 444 CIRCLEQ_FOREACH(me, &sc->sc_cld, me_next) { 445 if (me->me_ops->type == d->type && 446 me->me_dv.dv_unit == d->idx) { 447 wsmux_detach_sc(me); 448 return (0); 449 } 450 } 451 return (EINVAL); 452 #undef d 453 454 case WSMUXIO_LIST_DEVICES: 455 DPRINTF(("%s: list\n", sc->sc_base.me_dv.dv_xname)); 456 l = (struct wsmux_device_list *)data; 457 n = 0; 458 CIRCLEQ_FOREACH(me, &sc->sc_cld, me_next) { 459 if (n >= WSMUX_MAXDEV) 460 break; 461 l->devices[n].type = me->me_ops->type; 462 l->devices[n].idx = me->me_dv.dv_unit; 463 n++; 464 } 465 l->ndevices = n; 466 return (0); 467 #ifdef WSDISPLAY_COMPAT_RAWKBD 468 case WSKBDIO_SETMODE: 469 sc->sc_rawkbd = *(int *)data; 470 DPRINTF(("wsmux_do_ioctl: save rawkbd = %d\n", sc->sc_rawkbd)); 471 break; 472 #endif 473 case FIOASYNC: 474 DPRINTF(("%s: FIOASYNC\n", sc->sc_base.me_dv.dv_xname)); 475 evar = sc->sc_base.me_evp; 476 if (evar == NULL) 477 return (EINVAL); 478 evar->async = *(int *)data != 0; 479 return (0); 480 case TIOCSPGRP: 481 DPRINTF(("%s: TIOCSPGRP\n", sc->sc_base.me_dv.dv_xname)); 482 evar = sc->sc_base.me_evp; 483 if (evar == NULL) 484 return (EINVAL); 485 if (*(int *)data != evar->io->p_pgid) 486 return (EPERM); 487 return (0); 488 default: 489 DPRINTF(("%s: unknown\n", sc->sc_base.me_dv.dv_xname)); 490 break; 491 } 492 493 if (sc->sc_base.me_evp == NULL 494 #if NWSDISPLAY > 0 495 && sc->sc_base.me_dispdv == NULL 496 #endif 497 ) 498 return (EACCES); 499 500 /* Return 0 if any of the ioctl() succeeds, otherwise the last error */ 501 error = 0; 502 ok = 0; 503 CIRCLEQ_FOREACH(me, &sc->sc_cld, me_next) { 504 DPRINTF(("wsmux_do_ioctl: me=%p\n", me)); 505 #ifdef DIAGNOSTIC 506 /* XXX check evp? */ 507 if (me->me_parent != sc) { 508 printf("wsmux_do_ioctl: bad child %p\n", me); 509 continue; 510 } 511 #endif 512 DPRINTF(("wsmux_do_ioctl: %s: me=%p dev=%s\n", 513 sc->sc_base.me_dv.dv_xname, me, me->me_dv.dv_xname)); 514 error = wsevsrc_ioctl(me, cmd, data, flag, p); 515 if (!error) 516 ok = 1; 517 } 518 if (ok) 519 error = 0; 520 521 return (error); 522 } 523 524 /* 525 * poll() of the pseudo device from device table. 526 */ 527 int 528 wsmuxpoll(dev_t dev, int events, struct proc *p) 529 { 530 int minr = minor(dev); 531 struct wsmux_softc *sc = wsmuxdevs[WSMUXDEV(minr)]; 532 533 if (WSMUXCTL(minr)) { 534 /* control device */ 535 return (EINVAL); 536 } 537 538 if (sc->sc_base.me_evp == NULL) { 539 #ifdef DIAGNOSTIC 540 printf("wsmuxpoll: not open\n"); 541 #endif 542 return (EACCES); 543 } 544 545 return (wsevent_poll(sc->sc_base.me_evp, events, p)); 546 } 547 548 /* 549 * Add mux unit as a child to muxsc. 550 */ 551 int 552 wsmux_add_mux(int unit, struct wsmux_softc *muxsc) 553 { 554 struct wsmux_softc *sc, *m; 555 556 sc = wsmux_getmux(unit); 557 if (sc == NULL) 558 return (ENXIO); 559 560 DPRINTF(("wsmux_add_mux: %s(%p) to %s(%p)\n", 561 sc->sc_base.me_dv.dv_xname, sc, muxsc->sc_base.me_dv.dv_xname, 562 muxsc)); 563 564 if (sc->sc_base.me_parent != NULL || sc->sc_base.me_evp != NULL) 565 return (EBUSY); 566 567 /* The mux we are adding must not be an ancestor of itself. */ 568 for (m = muxsc; m != NULL ; m = m->sc_base.me_parent) 569 if (m == sc) 570 return (EINVAL); 571 572 return (wsmux_attach_sc(muxsc, &sc->sc_base)); 573 } 574 575 /* Create a new mux softc. */ 576 struct wsmux_softc * 577 wsmux_create(const char *name, int unit) 578 { 579 struct wsmux_softc *sc; 580 581 DPRINTF(("wsmux_create: allocating\n")); 582 sc = malloc(sizeof *sc, M_DEVBUF, M_NOWAIT); 583 if (sc == NULL) 584 return (NULL); 585 memset(sc, 0, sizeof *sc); 586 CIRCLEQ_INIT(&sc->sc_cld); 587 snprintf(sc->sc_base.me_dv.dv_xname, sizeof sc->sc_base.me_dv.dv_xname, 588 "%s%d", name, unit); 589 sc->sc_base.me_dv.dv_unit = unit; 590 sc->sc_base.me_ops = &wsmux_srcops; 591 return (sc); 592 } 593 594 /* Attach me as a child to sc. */ 595 int 596 wsmux_attach_sc(struct wsmux_softc *sc, struct wsevsrc *me) 597 { 598 int error; 599 600 if (sc == NULL) 601 return (EINVAL); 602 603 DPRINTF(("wsmux_attach_sc: %s: type=%d\n", 604 sc->sc_base.me_dv.dv_xname, me->me_ops->type)); 605 606 #ifdef DIAGNOSTIC 607 if (me->me_parent != NULL) { 608 printf("wsmux_attach_sc: busy\n"); 609 return (EBUSY); 610 } 611 #endif 612 me->me_parent = sc; 613 CIRCLEQ_INSERT_TAIL(&sc->sc_cld, me, me_next); 614 615 #if NWSDISPLAY > 0 616 if (sc->sc_base.me_dispdv != NULL) { 617 /* This is a display mux, so attach the new device to it. */ 618 DPRINTF(("wsmux_attach_sc: %s: set display %p\n", 619 sc->sc_base.me_dv.dv_xname, sc->sc_base.me_dispdv)); 620 error = 0; 621 if (me->me_ops->dsetdisplay != NULL) { 622 error = wsevsrc_set_display(me, &sc->sc_base); 623 /* Ignore that the console already has a display. */ 624 if (error == EBUSY) 625 error = 0; 626 if (!error) { 627 #ifdef WSDISPLAY_COMPAT_RAWKBD 628 DPRINTF(("wsmux_attach_sc: on %s set rawkbd=%d\n", 629 me->me_dv.dv_xname, sc->sc_rawkbd)); 630 (void)wsevsrc_ioctl(me, WSKBDIO_SETMODE, 631 &sc->sc_rawkbd, 0, 0); 632 #endif 633 } 634 } 635 } else 636 #endif 637 if (sc->sc_base.me_evp != NULL) { 638 /* Mux is open, so open the new subdevice */ 639 DPRINTF(("wsmux_attach_sc: %s: calling open of %s\n", 640 sc->sc_base.me_dv.dv_xname, me->me_dv.dv_xname)); 641 error = me->me_ops->dopen(me, sc->sc_base.me_evp); 642 } else { 643 DPRINTF(("wsmux_attach_sc: %s not open\n", 644 sc->sc_base.me_dv.dv_xname)); 645 error = 0; 646 } 647 648 if (error) { 649 me->me_parent = NULL; 650 CIRCLEQ_REMOVE(&sc->sc_cld, me, me_next); 651 } 652 653 DPRINTF(("wsmux_attach_sc: done sc=%p, error=%d\n", sc, error)); 654 return (error); 655 } 656 657 /* Remove me from the parent. */ 658 void 659 wsmux_detach_sc(struct wsevsrc *me) 660 { 661 struct wsmux_softc *sc = me->me_parent; 662 663 DPRINTF(("wsmux_detach_sc: %s\n", sc->sc_base.me_dv.dv_xname)); 664 665 #ifdef DIAGNOSTIC 666 if (sc == NULL) { 667 printf("wsmux_detach_sc: not allocated\n"); 668 return; 669 } 670 #endif 671 672 #if NWSDISPLAY > 0 673 if (sc->sc_base.me_dispdv != NULL) { 674 if (me->me_ops->dsetdisplay != NULL) 675 /* ignore error, there's nothing we can do */ 676 (void)wsevsrc_set_display(me, NULL); 677 } else 678 #endif 679 if (me->me_evp != NULL) { 680 DPRINTF(("wsmux_detach_sc: close\n")); 681 /* mux device is open, so close multiplexee */ 682 (void)me->me_ops->dclose(me); 683 } 684 685 CIRCLEQ_REMOVE(&sc->sc_cld, me, me_next); 686 me->me_parent = NULL; 687 688 DPRINTF(("wsmux_detach_sc: done sc=%p\n", sc)); 689 } 690 691 /* 692 * Display ioctl() of a mux via the parent mux. 693 */ 694 int 695 wsmux_do_displayioctl(struct device *dv, u_long cmd, caddr_t data, int flag, 696 struct proc *p) 697 { 698 struct wsmux_softc *sc = (struct wsmux_softc *)dv; 699 struct wsevsrc *me; 700 int error, ok; 701 702 DPRINTF(("wsmux_displayioctl: %s: sc=%p, cmd=%08lx\n", 703 sc->sc_base.me_dv.dv_xname, sc, cmd)); 704 705 #ifdef WSDISPLAY_COMPAT_RAWKBD 706 if (cmd == WSKBDIO_SETMODE) { 707 sc->sc_rawkbd = *(int *)data; 708 DPRINTF(("wsmux_displayioctl: rawkbd = %d\n", sc->sc_rawkbd)); 709 } 710 #endif 711 712 /* 713 * Return 0 if any of the ioctl() succeeds, otherwise the last error. 714 * Return -1 if no mux component accepts the ioctl. 715 */ 716 error = -1; 717 ok = 0; 718 CIRCLEQ_FOREACH(me, &sc->sc_cld, me_next) { 719 DPRINTF(("wsmux_displayioctl: me=%p\n", me)); 720 #ifdef DIAGNOSTIC 721 if (me->me_parent != sc) { 722 printf("wsmux_displayioctl: bad child %p\n", me); 723 continue; 724 } 725 #endif 726 if (me->me_ops->ddispioctl != NULL) { 727 error = wsevsrc_display_ioctl(me, cmd, data, flag, p); 728 DPRINTF(("wsmux_displayioctl: me=%p dev=%s ==> %d\n", 729 me, me->me_dv.dv_xname, error)); 730 if (!error) 731 ok = 1; 732 } 733 } 734 if (ok) 735 error = 0; 736 737 return (error); 738 } 739 740 #if NWSDISPLAY > 0 741 /* 742 * Set display of a mux via the parent mux. 743 */ 744 int 745 wsmux_set_display(struct device *dv, struct wsevsrc *ame) 746 { 747 struct wsmux_softc *muxsc = (struct wsmux_softc *)ame; 748 struct wsmux_softc *sc = (struct wsmux_softc *)dv; 749 struct wsmux_softc *nsc = muxsc ? sc : NULL; 750 struct device *displaydv = muxsc ? muxsc->sc_base.me_dispdv : NULL; 751 struct device *odisplaydv; 752 struct wsevsrc *me; 753 int error, ok; 754 755 DPRINTF(("wsmux_set_display: %s: displaydv=%p\n", 756 sc->sc_base.me_dv.dv_xname, displaydv)); 757 758 if (displaydv != NULL) { 759 if (sc->sc_base.me_dispdv != NULL) 760 return (EBUSY); 761 } else { 762 if (sc->sc_base.me_dispdv == NULL) 763 return (ENXIO); 764 } 765 766 odisplaydv = sc->sc_base.me_dispdv; 767 sc->sc_base.me_dispdv = displaydv; 768 769 if (displaydv) 770 printf("%s: connecting to %s\n", 771 sc->sc_base.me_dv.dv_xname, displaydv->dv_xname); 772 ok = 0; 773 error = 0; 774 CIRCLEQ_FOREACH(me, &sc->sc_cld,me_next) { 775 #ifdef DIAGNOSTIC 776 if (me->me_parent != sc) { 777 printf("wsmux_set_display: bad child parent %p\n", me); 778 continue; 779 } 780 #endif 781 if (me->me_ops->dsetdisplay != NULL) { 782 error = wsevsrc_set_display(me, &nsc->sc_base); 783 DPRINTF(("wsmux_set_display: m=%p dev=%s error=%d\n", 784 me, me->me_dv.dv_xname, error)); 785 if (!error) { 786 ok = 1; 787 #ifdef WSDISPLAY_COMPAT_RAWKBD 788 DPRINTF(("wsmux_set_display: on %s set rawkbd=%d\n", 789 me->me_dv.dv_xname, sc->sc_rawkbd)); 790 (void)wsevsrc_ioctl(me, WSKBDIO_SETMODE, 791 &sc->sc_rawkbd, 0, 0); 792 #endif 793 } 794 } 795 } 796 if (ok) 797 error = 0; 798 799 if (displaydv == NULL) 800 printf("%s: disconnecting from %s\n", 801 sc->sc_base.me_dv.dv_xname, odisplaydv->dv_xname); 802 803 return (error); 804 } 805 #endif /* NWSDISPLAY > 0 */ 806
Indexes created Tue Sep 23 14:10:03 GMT 2025