wsmouse.c revision 1.38.6.1
1 /* $NetBSD: wsmouse.c,v 1.38.6.1 2006/02/04 14:03:58 simonb 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 /* 34 * Copyright (c) 1992, 1993 35 * The Regents of the University of California. All rights reserved. 36 * 37 * This software was developed by the Computer Systems Engineering group 38 * at Lawrence Berkeley Laboratory under DARPA contract BG 91-66 and 39 * contributed to Berkeley. 40 * 41 * All advertising materials mentioning features or use of this software 42 * must display the following acknowledgement: 43 * This product includes software developed by the University of 44 * California, Lawrence Berkeley Laboratory. 45 * 46 * Redistribution and use in source and binary forms, with or without 47 * modification, are permitted provided that the following conditions 48 * are met: 49 * 1. Redistributions of source code must retain the above copyright 50 * notice, this list of conditions and the following disclaimer. 51 * 2. Redistributions in binary form must reproduce the above copyright 52 * notice, this list of conditions and the following disclaimer in the 53 * documentation and/or other materials provided with the distribution. 54 * 3. Neither the name of the University nor the names of its contributors 55 * may be used to endorse or promote products derived from this software 56 * without specific prior written permission. 57 * 58 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 59 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 60 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 61 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 62 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 63 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 64 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 65 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 66 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 67 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 68 * SUCH DAMAGE. 69 * 70 * @(#)ms.c 8.1 (Berkeley) 6/11/93 71 */ 72 73 /* 74 * Mouse driver. 75 */ 76 77 #include <sys/cdefs.h> 78 __KERNEL_RCSID(0, "$NetBSD: wsmouse.c,v 1.38.6.1 2006/02/04 14:03:58 simonb Exp $"); 79 80 #include "wsmouse.h" 81 #include "wsdisplay.h" 82 #include "wsmux.h" 83 84 #include <sys/param.h> 85 #include <sys/conf.h> 86 #include <sys/ioctl.h> 87 #include <sys/poll.h> 88 #include <sys/fcntl.h> 89 #include <sys/kernel.h> 90 #include <sys/proc.h> 91 #include <sys/syslog.h> 92 #include <sys/systm.h> 93 #include <sys/tty.h> 94 #include <sys/signalvar.h> 95 #include <sys/device.h> 96 #include <sys/vnode.h> 97 98 #include <dev/wscons/wsconsio.h> 99 #include <dev/wscons/wsmousevar.h> 100 #include <dev/wscons/wseventvar.h> 101 #include <dev/wscons/wsmuxvar.h> 102 103 #if defined(WSMUX_DEBUG) && NWSMUX > 0 104 #define DPRINTF(x) if (wsmuxdebug) printf x 105 #define DPRINTFN(n,x) if (wsmuxdebug > (n)) printf x 106 extern int wsmuxdebug; 107 #else 108 #define DPRINTF(x) 109 #define DPRINTFN(n,x) 110 #endif 111 112 #define INVALID_X INT_MAX 113 #define INVALID_Y INT_MAX 114 #define INVALID_Z INT_MAX 115 116 struct wsmouse_softc { 117 struct wsevsrc sc_base; 118 119 const struct wsmouse_accessops *sc_accessops; 120 void *sc_accesscookie; 121 122 u_int sc_mb; /* mouse button state */ 123 u_int sc_ub; /* user button state */ 124 int sc_dx; /* delta-x */ 125 int sc_dy; /* delta-y */ 126 int sc_dz; /* delta-z */ 127 int sc_dw; /* delta-w */ 128 int sc_x; /* absolute-x */ 129 int sc_y; /* absolute-y */ 130 int sc_z; /* absolute-z */ 131 int sc_w; /* absolute-w */ 132 133 int sc_refcnt; 134 u_char sc_dying; /* device is being detached */ 135 }; 136 137 static int wsmouse_match(struct device *, struct cfdata *, void *); 138 static void wsmouse_attach(struct device *, struct device *, void *); 139 static int wsmouse_detach(struct device *, int); 140 static int wsmouse_activate(struct device *, enum devact); 141 142 static int wsmouse_do_ioctl(struct wsmouse_softc *, u_long, caddr_t, 143 int, struct lwp *); 144 145 #if NWSMUX > 0 146 static int wsmouse_mux_open(struct wsevsrc *, struct wseventvar *); 147 static int wsmouse_mux_close(struct wsevsrc *); 148 #endif 149 150 static int wsmousedoioctl(struct device *, u_long, caddr_t, int, struct lwp *); 151 152 static int wsmousedoopen(struct wsmouse_softc *, struct wseventvar *); 153 154 CFATTACH_DECL(wsmouse, sizeof (struct wsmouse_softc), 155 wsmouse_match, wsmouse_attach, wsmouse_detach, wsmouse_activate); 156 157 extern struct cfdriver wsmouse_cd; 158 159 dev_type_open(wsmouseopen); 160 dev_type_close(wsmouseclose); 161 dev_type_read(wsmouseread); 162 dev_type_ioctl(wsmouseioctl); 163 dev_type_poll(wsmousepoll); 164 dev_type_kqfilter(wsmousekqfilter); 165 166 const struct cdevsw wsmouse_cdevsw = { 167 wsmouseopen, wsmouseclose, wsmouseread, nowrite, wsmouseioctl, 168 nostop, notty, wsmousepoll, nommap, wsmousekqfilter, 169 }; 170 171 #if NWSMUX > 0 172 struct wssrcops wsmouse_srcops = { 173 WSMUX_MOUSE, 174 wsmouse_mux_open, wsmouse_mux_close, wsmousedoioctl, NULL, NULL 175 }; 176 #endif 177 178 /* 179 * Print function (for parent devices). 180 */ 181 int 182 wsmousedevprint(void *aux, const char *pnp) 183 { 184 185 if (pnp) 186 aprint_normal("wsmouse at %s", pnp); 187 return (UNCONF); 188 } 189 190 int 191 wsmouse_match(struct device *parent, struct cfdata *match, void *aux) 192 { 193 return (1); 194 } 195 196 void 197 wsmouse_attach(struct device *parent, struct device *self, void *aux) 198 { 199 struct wsmouse_softc *sc = (struct wsmouse_softc *)self; 200 struct wsmousedev_attach_args *ap = aux; 201 #if NWSMUX > 0 202 int mux, error; 203 #endif 204 205 sc->sc_accessops = ap->accessops; 206 sc->sc_accesscookie = ap->accesscookie; 207 208 #if NWSMUX > 0 209 sc->sc_base.me_ops = &wsmouse_srcops; 210 mux = sc->sc_base.me_dv.dv_cfdata->wsmousedevcf_mux; 211 if (mux >= 0) { 212 error = wsmux_attach_sc(wsmux_getmux(mux), &sc->sc_base); 213 if (error) 214 printf(" attach error=%d", error); 215 else 216 printf(" mux %d", mux); 217 } 218 #else 219 if (sc->sc_base.me_dv.dv_cfdata->wsmousedevcf_mux >= 0) 220 printf(" (mux ignored)"); 221 #endif 222 223 printf("\n"); 224 } 225 226 int 227 wsmouse_activate(struct device *self, enum devact act) 228 { 229 struct wsmouse_softc *sc = (struct wsmouse_softc *)self; 230 231 if (act == DVACT_DEACTIVATE) 232 sc->sc_dying = 1; 233 return (0); 234 } 235 236 /* 237 * Detach a mouse. To keep track of users of the softc we keep 238 * a reference count that's incremented while inside, e.g., read. 239 * If the mouse is active and the reference count is > 0 (0 is the 240 * normal state) we post an event and then wait for the process 241 * that had the reference to wake us up again. Then we blow away the 242 * vnode and return (which will deallocate the softc). 243 */ 244 int 245 wsmouse_detach(struct device *self, int flags) 246 { 247 struct wsmouse_softc *sc = (struct wsmouse_softc *)self; 248 struct wseventvar *evar; 249 int maj, mn; 250 int s; 251 252 #if NWSMUX > 0 253 /* Tell parent mux we're leaving. */ 254 if (sc->sc_base.me_parent != NULL) { 255 DPRINTF(("wsmouse_detach:\n")); 256 wsmux_detach_sc(&sc->sc_base); 257 } 258 #endif 259 260 /* If we're open ... */ 261 evar = sc->sc_base.me_evp; 262 if (evar != NULL && evar->io != NULL) { 263 s = spltty(); 264 if (--sc->sc_refcnt >= 0) { 265 /* Wake everyone by generating a dummy event. */ 266 if (++evar->put >= WSEVENT_QSIZE) 267 evar->put = 0; 268 WSEVENT_WAKEUP(evar); 269 /* Wait for processes to go away. */ 270 if (tsleep(sc, PZERO, "wsmdet", hz * 60)) 271 printf("wsmouse_detach: %s didn't detach\n", 272 sc->sc_base.me_dv.dv_xname); 273 } 274 splx(s); 275 } 276 277 /* locate the major number */ 278 maj = cdevsw_lookup_major(&wsmouse_cdevsw); 279 280 /* Nuke the vnodes for any open instances (calls close). */ 281 mn = self->dv_unit; 282 vdevgone(maj, mn, mn, VCHR); 283 284 return (0); 285 } 286 287 void 288 wsmouse_input_xyzw(struct device *wsmousedev, u_int btns /* 0 is up */, 289 int x, int y, int z, int w, u_int flags) 290 { 291 struct wsmouse_softc *sc = (struct wsmouse_softc *)wsmousedev; 292 struct wscons_event *ev; 293 struct wseventvar *evar; 294 int mb, ub, d, get, put, any; 295 296 /* 297 * Discard input if not open. 298 */ 299 evar = sc->sc_base.me_evp; 300 if (evar == NULL) 301 return; 302 303 #ifdef DIAGNOSTIC 304 if (evar->q == NULL) { 305 printf("wsmouse_input: evar->q=NULL\n"); 306 return; 307 } 308 #endif 309 310 #if NWSMUX > 0 311 DPRINTFN(5,("wsmouse_input: %s mux=%p, evar=%p\n", 312 sc->sc_base.me_dv.dv_xname, sc->sc_base.me_parent, evar)); 313 #endif 314 315 sc->sc_mb = btns; 316 if (!(flags & WSMOUSE_INPUT_ABSOLUTE_X)) 317 sc->sc_dx += x; 318 if (!(flags & WSMOUSE_INPUT_ABSOLUTE_Y)) 319 sc->sc_dy += y; 320 if (!(flags & WSMOUSE_INPUT_ABSOLUTE_Z)) 321 sc->sc_dz += z; 322 if (!(flags & WSMOUSE_INPUT_ABSOLUTE_W)) 323 sc->sc_dw += w; 324 325 /* 326 * We have at least one event (mouse button, delta-X, or 327 * delta-Y; possibly all three, and possibly three separate 328 * button events). Deliver these events until we are out 329 * of changes or out of room. As events get delivered, 330 * mark them `unchanged'. 331 */ 332 ub = sc->sc_ub; 333 any = 0; 334 get = evar->get; 335 put = evar->put; 336 ev = &evar->q[put]; 337 338 /* NEXT prepares to put the next event, backing off if necessary */ 339 #define NEXT \ 340 if ((++put) % WSEVENT_QSIZE == get) { \ 341 put--; \ 342 goto out; \ 343 } 344 /* ADVANCE completes the `put' of the event */ 345 #define ADVANCE \ 346 ev++; \ 347 if (put >= WSEVENT_QSIZE) { \ 348 put = 0; \ 349 ev = &evar->q[0]; \ 350 } \ 351 any = 1 352 /* TIMESTAMP sets `time' field of the event to the current time */ 353 #define TIMESTAMP getnanotime(&ev->time) 354 355 if (flags & WSMOUSE_INPUT_ABSOLUTE_X) { 356 if (sc->sc_x != x) { 357 NEXT; 358 ev->type = WSCONS_EVENT_MOUSE_ABSOLUTE_X; 359 ev->value = x; 360 TIMESTAMP; 361 ADVANCE; 362 sc->sc_x = x; 363 } 364 } else { 365 if (sc->sc_dx) { 366 NEXT; 367 ev->type = WSCONS_EVENT_MOUSE_DELTA_X; 368 ev->value = sc->sc_dx; 369 TIMESTAMP; 370 ADVANCE; 371 sc->sc_dx = 0; 372 } 373 } 374 if (flags & WSMOUSE_INPUT_ABSOLUTE_Y) { 375 if (sc->sc_y != y) { 376 NEXT; 377 ev->type = WSCONS_EVENT_MOUSE_ABSOLUTE_Y; 378 ev->value = y; 379 TIMESTAMP; 380 ADVANCE; 381 sc->sc_y = y; 382 } 383 } else { 384 if (sc->sc_dy) { 385 NEXT; 386 ev->type = WSCONS_EVENT_MOUSE_DELTA_Y; 387 ev->value = sc->sc_dy; 388 TIMESTAMP; 389 ADVANCE; 390 sc->sc_dy = 0; 391 } 392 } 393 if (flags & WSMOUSE_INPUT_ABSOLUTE_Z) { 394 if (sc->sc_z != z) { 395 NEXT; 396 ev->type = WSCONS_EVENT_MOUSE_ABSOLUTE_Z; 397 ev->value = z; 398 TIMESTAMP; 399 ADVANCE; 400 sc->sc_z = z; 401 } 402 } else { 403 if (sc->sc_dz) { 404 NEXT; 405 ev->type = WSCONS_EVENT_MOUSE_DELTA_Z; 406 ev->value = sc->sc_dz; 407 TIMESTAMP; 408 ADVANCE; 409 sc->sc_dz = 0; 410 } 411 } 412 if (flags & WSMOUSE_INPUT_ABSOLUTE_W) { 413 if (sc->sc_w != w) { 414 NEXT; 415 ev->type = WSCONS_EVENT_MOUSE_ABSOLUTE_W; 416 ev->value = w; 417 TIMESTAMP; 418 ADVANCE; 419 sc->sc_w = w; 420 } 421 } else { 422 if (sc->sc_dw) { 423 NEXT; 424 ev->type = WSCONS_EVENT_MOUSE_DELTA_W; 425 ev->value = sc->sc_dw; 426 TIMESTAMP; 427 ADVANCE; 428 sc->sc_dw = 0; 429 } 430 } 431 432 mb = sc->sc_mb; 433 while ((d = mb ^ ub) != 0) { 434 /* 435 * Mouse button change. Find the first change and drop 436 * it into the event queue. 437 */ 438 NEXT; 439 ev->value = ffs(d) - 1; 440 441 KASSERT(ev->value >= 0); 442 443 d = 1 << ev->value; 444 ev->type = 445 (mb & d) ? WSCONS_EVENT_MOUSE_DOWN : WSCONS_EVENT_MOUSE_UP; 446 TIMESTAMP; 447 ADVANCE; 448 ub ^= d; 449 } 450 out: 451 if (any) { 452 sc->sc_ub = ub; 453 evar->put = put; 454 WSEVENT_WAKEUP(evar); 455 #if NWSMUX > 0 456 DPRINTFN(5,("wsmouse_input: %s wakeup evar=%p\n", 457 sc->sc_base.me_dv.dv_xname, evar)); 458 #endif 459 } 460 } 461 462 int 463 wsmouseopen(dev_t dev, int flags, int mode, struct lwp *l) 464 { 465 struct wsmouse_softc *sc; 466 struct wseventvar *evar; 467 int error, unit; 468 469 unit = minor(dev); 470 if (unit >= wsmouse_cd.cd_ndevs || /* make sure it was attached */ 471 (sc = wsmouse_cd.cd_devs[unit]) == NULL) 472 return (ENXIO); 473 474 #if NWSMUX > 0 475 DPRINTF(("wsmouseopen: %s mux=%p p=%p\n", sc->sc_base.me_dv.dv_xname, 476 sc->sc_base.me_parent, l)); 477 #endif 478 479 if (sc->sc_dying) 480 return (EIO); 481 482 if ((flags & (FREAD | FWRITE)) == FWRITE) 483 return (0); /* always allow open for write 484 so ioctl() is possible. */ 485 486 if (sc->sc_base.me_evp != NULL) 487 return (EBUSY); 488 489 evar = &sc->sc_base.me_evar; 490 wsevent_init(evar); 491 sc->sc_base.me_evp = evar; 492 evar->io = l->l_proc; 493 494 error = wsmousedoopen(sc, evar); 495 if (error) { 496 DPRINTF(("wsmouseopen: %s open failed\n", 497 sc->sc_base.me_dv.dv_xname)); 498 sc->sc_base.me_evp = NULL; 499 wsevent_fini(evar); 500 } 501 return (error); 502 } 503 504 int 505 wsmouseclose(dev_t dev, int flags, int mode, struct lwp *l) 506 { 507 struct wsmouse_softc *sc = 508 (struct wsmouse_softc *)wsmouse_cd.cd_devs[minor(dev)]; 509 struct wseventvar *evar = sc->sc_base.me_evp; 510 511 if (evar == NULL) 512 /* not open for read */ 513 return (0); 514 sc->sc_base.me_evp = NULL; 515 (*sc->sc_accessops->disable)(sc->sc_accesscookie); 516 wsevent_fini(evar); 517 518 return (0); 519 } 520 521 int 522 wsmousedoopen(struct wsmouse_softc *sc, struct wseventvar *evp) 523 { 524 sc->sc_base.me_evp = evp; 525 sc->sc_x = INVALID_X; 526 sc->sc_y = INVALID_Y; 527 sc->sc_z = INVALID_Z; 528 529 /* enable the device, and punt if that's not possible */ 530 return (*sc->sc_accessops->enable)(sc->sc_accesscookie); 531 } 532 533 int 534 wsmouseread(dev_t dev, struct uio *uio, int flags) 535 { 536 struct wsmouse_softc *sc = wsmouse_cd.cd_devs[minor(dev)]; 537 int error; 538 539 if (sc->sc_dying) 540 return (EIO); 541 542 #ifdef DIAGNOSTIC 543 if (sc->sc_base.me_evp == NULL) { 544 printf("wsmouseread: evp == NULL\n"); 545 return (EINVAL); 546 } 547 #endif 548 549 sc->sc_refcnt++; 550 error = wsevent_read(sc->sc_base.me_evp, uio, flags); 551 if (--sc->sc_refcnt < 0) { 552 wakeup(sc); 553 error = EIO; 554 } 555 return (error); 556 } 557 558 int 559 wsmouseioctl(dev_t dev, u_long cmd, caddr_t data, int flag, struct lwp *l) 560 { 561 return (wsmousedoioctl(wsmouse_cd.cd_devs[minor(dev)], 562 cmd, data, flag, l)); 563 } 564 565 /* A wrapper around the ioctl() workhorse to make reference counting easy. */ 566 int 567 wsmousedoioctl(struct device *dv, u_long cmd, caddr_t data, int flag, 568 struct lwp *l) 569 { 570 struct wsmouse_softc *sc = (struct wsmouse_softc *)dv; 571 int error; 572 573 sc->sc_refcnt++; 574 error = wsmouse_do_ioctl(sc, cmd, data, flag, l); 575 if (--sc->sc_refcnt < 0) 576 wakeup(sc); 577 return (error); 578 } 579 580 int 581 wsmouse_do_ioctl(struct wsmouse_softc *sc, u_long cmd, caddr_t data, 582 int flag, struct lwp *l) 583 { 584 int error; 585 586 if (sc->sc_dying) 587 return (EIO); 588 589 /* 590 * Try the generic ioctls that the wsmouse interface supports. 591 */ 592 switch (cmd) { 593 case FIONBIO: /* we will remove this someday (soon???) */ 594 return (0); 595 596 case FIOASYNC: 597 if (sc->sc_base.me_evp == NULL) 598 return (EINVAL); 599 sc->sc_base.me_evp->async = *(int *)data != 0; 600 return (0); 601 602 case FIOSETOWN: 603 if (sc->sc_base.me_evp == NULL) 604 return (EINVAL); 605 if (-*(int *)data != sc->sc_base.me_evp->io->p_pgid 606 && *(int *)data != sc->sc_base.me_evp->io->p_pid) 607 return (EPERM); 608 return (0); 609 610 case TIOCSPGRP: 611 if (sc->sc_base.me_evp == NULL) 612 return (EINVAL); 613 if (*(int *)data != sc->sc_base.me_evp->io->p_pgid) 614 return (EPERM); 615 return (0); 616 } 617 618 /* 619 * Try the mouse driver for WSMOUSEIO ioctls. It returns -1 620 * if it didn't recognize the request. 621 */ 622 error = (*sc->sc_accessops->ioctl)(sc->sc_accesscookie, cmd, 623 data, flag, l); 624 return (error); /* may be EPASSTHROUGH */ 625 } 626 627 int 628 wsmousepoll(dev_t dev, int events, struct lwp *l) 629 { 630 struct wsmouse_softc *sc = wsmouse_cd.cd_devs[minor(dev)]; 631 632 if (sc->sc_base.me_evp == NULL) 633 return (POLLERR); 634 return (wsevent_poll(sc->sc_base.me_evp, events, l)); 635 } 636 637 int 638 wsmousekqfilter(dev_t dev, struct knote *kn) 639 { 640 struct wsmouse_softc *sc = wsmouse_cd.cd_devs[minor(dev)]; 641 642 if (sc->sc_base.me_evp == NULL) 643 return (1); 644 return (wsevent_kqfilter(sc->sc_base.me_evp, kn)); 645 } 646 647 #if NWSMUX > 0 648 int 649 wsmouse_mux_open(struct wsevsrc *me, struct wseventvar *evp) 650 { 651 struct wsmouse_softc *sc = (struct wsmouse_softc *)me; 652 653 if (sc->sc_base.me_evp != NULL) 654 return (EBUSY); 655 656 return wsmousedoopen(sc, evp); 657 } 658 659 int 660 wsmouse_mux_close(struct wsevsrc *me) 661 { 662 struct wsmouse_softc *sc = (struct wsmouse_softc *)me; 663 664 sc->sc_base.me_evp = NULL; 665 (*sc->sc_accessops->disable)(sc->sc_accesscookie); 666 667 return (0); 668 } 669 670 int 671 wsmouse_add_mux(int unit, struct wsmux_softc *muxsc) 672 { 673 struct wsmouse_softc *sc; 674 675 if (unit < 0 || unit >= wsmouse_cd.cd_ndevs || 676 (sc = wsmouse_cd.cd_devs[unit]) == NULL) 677 return (ENXIO); 678 679 if (sc->sc_base.me_parent != NULL || sc->sc_base.me_evp != NULL) 680 return (EBUSY); 681 682 return (wsmux_attach_sc(muxsc, &sc->sc_base)); 683 } 684 #endif /* NWSMUX > 0 */ 685
Indexes created Mon Oct 20 16:09:52 GMT 2025