wsmouse.c revision 1.52.6.3
1 /* $NetBSD: wsmouse.c,v 1.52.6.3 2007/11/06 14:27:36 joerg Exp $ */ 2 3 /*- 4 * Copyright (c) 2006 The NetBSD Foundation, Inc. 5 * All rights reserved. 6 * 7 * This code is derived from software contributed to The NetBSD Foundation 8 * by Julio M. Merino Vidal. 9 * 10 * Redistribution and use in source and binary forms, with or without 11 * modification, are permitted provided that the following conditions 12 * are met: 13 * 1. Redistributions of source code must retain the above copyright 14 * notice, this list of conditions and the following disclaimer. 15 * 2. Redistributions in binary form must reproduce the above copyright 16 * notice, this list of conditions and the following disclaimer in the 17 * documentation and/or other materials provided with the distribution. 18 * 3. All advertising materials mentioning features or use of this software 19 * must display the following acknowledgement: 20 * This product includes software developed by the NetBSD 21 * Foundation, Inc. and its contributors. 22 * 4. Neither the name of The NetBSD Foundation nor the names of its 23 * contributors may be used to endorse or promote products derived 24 * from this software without specific prior written permission. 25 * 26 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 27 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 28 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 29 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 30 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 31 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 32 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 33 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 34 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 35 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 36 * POSSIBILITY OF SUCH DAMAGE. 37 */ 38 39 /* 40 * Copyright (c) 1996, 1997 Christopher G. Demetriou. All rights reserved. 41 * 42 * Redistribution and use in source and binary forms, with or without 43 * modification, are permitted provided that the following conditions 44 * are met: 45 * 1. Redistributions of source code must retain the above copyright 46 * notice, this list of conditions and the following disclaimer. 47 * 2. Redistributions in binary form must reproduce the above copyright 48 * notice, this list of conditions and the following disclaimer in the 49 * documentation and/or other materials provided with the distribution. 50 * 3. All advertising materials mentioning features or use of this software 51 * must display the following acknowledgement: 52 * This product includes software developed by Christopher G. Demetriou 53 * for the NetBSD Project. 54 * 4. The name of the author may not be used to endorse or promote products 55 * derived from this software without specific prior written permission 56 * 57 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 58 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 59 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 60 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 61 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 62 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 63 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 64 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 65 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 66 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 67 */ 68 69 /* 70 * Copyright (c) 1992, 1993 71 * The Regents of the University of California. All rights reserved. 72 * 73 * This software was developed by the Computer Systems Engineering group 74 * at Lawrence Berkeley Laboratory under DARPA contract BG 91-66 and 75 * contributed to Berkeley. 76 * 77 * All advertising materials mentioning features or use of this software 78 * must display the following acknowledgement: 79 * This product includes software developed by the University of 80 * California, Lawrence Berkeley Laboratory. 81 * 82 * Redistribution and use in source and binary forms, with or without 83 * modification, are permitted provided that the following conditions 84 * are met: 85 * 1. Redistributions of source code must retain the above copyright 86 * notice, this list of conditions and the following disclaimer. 87 * 2. Redistributions in binary form must reproduce the above copyright 88 * notice, this list of conditions and the following disclaimer in the 89 * documentation and/or other materials provided with the distribution. 90 * 3. Neither the name of the University nor the names of its contributors 91 * may be used to endorse or promote products derived from this software 92 * without specific prior written permission. 93 * 94 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 95 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 96 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 97 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 98 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 99 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 100 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 101 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 102 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 103 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 104 * SUCH DAMAGE. 105 * 106 * @(#)ms.c 8.1 (Berkeley) 6/11/93 107 */ 108 109 /* 110 * Mouse driver. 111 */ 112 113 #include <sys/cdefs.h> 114 __KERNEL_RCSID(0, "$NetBSD: wsmouse.c,v 1.52.6.3 2007/11/06 14:27:36 joerg Exp $"); 115 116 #include "wsmouse.h" 117 #include "wsdisplay.h" 118 #include "wsmux.h" 119 120 #include <sys/param.h> 121 #include <sys/conf.h> 122 #include <sys/ioctl.h> 123 #include <sys/poll.h> 124 #include <sys/fcntl.h> 125 #include <sys/kernel.h> 126 #include <sys/proc.h> 127 #include <sys/syslog.h> 128 #include <sys/systm.h> 129 #include <sys/tty.h> 130 #include <sys/signalvar.h> 131 #include <sys/device.h> 132 #include <sys/vnode.h> 133 #include <sys/callout.h> 134 #include <sys/malloc.h> 135 136 #include <dev/wscons/wsconsio.h> 137 #include <dev/wscons/wsmousevar.h> 138 #include <dev/wscons/wseventvar.h> 139 #include <dev/wscons/wsmuxvar.h> 140 141 #if defined(WSMUX_DEBUG) && NWSMUX > 0 142 #define DPRINTF(x) if (wsmuxdebug) printf x 143 #define DPRINTFN(n,x) if (wsmuxdebug > (n)) printf x 144 extern int wsmuxdebug; 145 #else 146 #define DPRINTF(x) 147 #define DPRINTFN(n,x) 148 #endif 149 150 #define INVALID_X INT_MAX 151 #define INVALID_Y INT_MAX 152 #define INVALID_Z INT_MAX 153 154 struct wsmouse_softc { 155 struct wsevsrc sc_base; 156 157 const struct wsmouse_accessops *sc_accessops; 158 void *sc_accesscookie; 159 160 u_int sc_mb; /* mouse button state */ 161 u_int sc_ub; /* user button state */ 162 int sc_dx; /* delta-x */ 163 int sc_dy; /* delta-y */ 164 int sc_dz; /* delta-z */ 165 int sc_dw; /* delta-w */ 166 int sc_x; /* absolute-x */ 167 int sc_y; /* absolute-y */ 168 int sc_z; /* absolute-z */ 169 int sc_w; /* absolute-w */ 170 171 int sc_refcnt; 172 u_char sc_dying; /* device is being detached */ 173 174 struct wsmouse_repeat sc_repeat; 175 int sc_repeat_button; 176 callout_t sc_repeat_callout; 177 unsigned int sc_repeat_delay; 178 }; 179 180 static int wsmouse_match(struct device *, struct cfdata *, void *); 181 static void wsmouse_attach(struct device *, struct device *, void *); 182 static int wsmouse_detach(struct device *, int); 183 static int wsmouse_activate(struct device *, enum devact); 184 185 static int wsmouse_do_ioctl(struct wsmouse_softc *, u_long, void *, 186 int, struct lwp *); 187 188 #if NWSMUX > 0 189 static int wsmouse_mux_open(struct wsevsrc *, struct wseventvar *); 190 static int wsmouse_mux_close(struct wsevsrc *); 191 #endif 192 193 static int wsmousedoioctl(struct device *, u_long, void *, int, struct lwp *); 194 195 static int wsmousedoopen(struct wsmouse_softc *, struct wseventvar *); 196 197 CFATTACH_DECL(wsmouse, sizeof (struct wsmouse_softc), 198 wsmouse_match, wsmouse_attach, wsmouse_detach, wsmouse_activate); 199 200 static void wsmouse_repeat(void *v); 201 202 extern struct cfdriver wsmouse_cd; 203 204 dev_type_open(wsmouseopen); 205 dev_type_close(wsmouseclose); 206 dev_type_read(wsmouseread); 207 dev_type_ioctl(wsmouseioctl); 208 dev_type_poll(wsmousepoll); 209 dev_type_kqfilter(wsmousekqfilter); 210 211 const struct cdevsw wsmouse_cdevsw = { 212 wsmouseopen, wsmouseclose, wsmouseread, nowrite, wsmouseioctl, 213 nostop, notty, wsmousepoll, nommap, wsmousekqfilter, D_OTHER 214 }; 215 216 #if NWSMUX > 0 217 struct wssrcops wsmouse_srcops = { 218 WSMUX_MOUSE, 219 wsmouse_mux_open, wsmouse_mux_close, wsmousedoioctl, NULL, NULL 220 }; 221 #endif 222 223 /* 224 * Print function (for parent devices). 225 */ 226 int 227 wsmousedevprint(void *aux, const char *pnp) 228 { 229 230 if (pnp) 231 aprint_normal("wsmouse at %s", pnp); 232 return (UNCONF); 233 } 234 235 int 236 wsmouse_match(struct device *parent, struct cfdata *match, 237 void *aux) 238 { 239 return (1); 240 } 241 242 void 243 wsmouse_attach(struct device *parent, struct device *self, void *aux) 244 { 245 struct wsmouse_softc *sc = (struct wsmouse_softc *)self; 246 struct wsmousedev_attach_args *ap = aux; 247 #if NWSMUX > 0 248 int mux, error; 249 #endif 250 251 sc->sc_accessops = ap->accessops; 252 sc->sc_accesscookie = ap->accesscookie; 253 254 /* Initialize button repeating. */ 255 memset(&sc->sc_repeat, 0, sizeof(sc->sc_repeat)); 256 sc->sc_repeat_button = -1; 257 sc->sc_repeat_delay = 0; 258 callout_init(&sc->sc_repeat_callout, 0); 259 callout_setfunc(&sc->sc_repeat_callout, wsmouse_repeat, sc); 260 261 #if NWSMUX > 0 262 sc->sc_base.me_ops = &wsmouse_srcops; 263 mux = device_cfdata(&sc->sc_base.me_dv)->wsmousedevcf_mux; 264 if (mux >= 0) { 265 error = wsmux_attach_sc(wsmux_getmux(mux), &sc->sc_base); 266 if (error) 267 printf(" attach error=%d", error); 268 else 269 printf(" mux %d", mux); 270 } 271 #else 272 if (device_cfdata(&sc->sc_base.me_dv)->wsmousedevcf_mux >= 0) 273 printf(" (mux ignored)"); 274 #endif 275 276 printf("\n"); 277 278 if (!pnp_device_register(self, NULL, NULL)) 279 aprint_error_dev(self, "couldn't establish power handler\n"); 280 } 281 282 int 283 wsmouse_activate(struct device *self, enum devact act) 284 { 285 struct wsmouse_softc *sc = (struct wsmouse_softc *)self; 286 287 if (act == DVACT_DEACTIVATE) 288 sc->sc_dying = 1; 289 return (0); 290 } 291 292 /* 293 * Detach a mouse. To keep track of users of the softc we keep 294 * a reference count that's incremented while inside, e.g., read. 295 * If the mouse is active and the reference count is > 0 (0 is the 296 * normal state) we post an event and then wait for the process 297 * that had the reference to wake us up again. Then we blow away the 298 * vnode and return (which will deallocate the softc). 299 */ 300 int 301 wsmouse_detach(struct device *self, int flags) 302 { 303 struct wsmouse_softc *sc = (struct wsmouse_softc *)self; 304 struct wseventvar *evar; 305 int maj, mn; 306 int s; 307 308 #if NWSMUX > 0 309 /* Tell parent mux we're leaving. */ 310 if (sc->sc_base.me_parent != NULL) { 311 DPRINTF(("wsmouse_detach:\n")); 312 wsmux_detach_sc(&sc->sc_base); 313 } 314 #endif 315 316 /* If we're open ... */ 317 evar = sc->sc_base.me_evp; 318 if (evar != NULL && evar->io != NULL) { 319 s = spltty(); 320 if (--sc->sc_refcnt >= 0) { 321 struct wscons_event event; 322 323 /* Wake everyone by generating a dummy event. */ 324 event.type = 0; 325 event.value = 0; 326 if (wsevent_inject(evar, &event, 1) != 0) 327 wsevent_wakeup(evar); 328 329 /* Wait for processes to go away. */ 330 if (tsleep(sc, PZERO, "wsmdet", hz * 60)) 331 printf("wsmouse_detach: %s didn't detach\n", 332 sc->sc_base.me_dv.dv_xname); 333 } 334 splx(s); 335 } 336 337 /* locate the major number */ 338 maj = cdevsw_lookup_major(&wsmouse_cdevsw); 339 340 /* Nuke the vnodes for any open instances (calls close). */ 341 mn = device_unit(self); 342 vdevgone(maj, mn, mn, VCHR); 343 344 return (0); 345 } 346 347 void 348 wsmouse_input(struct device *wsmousedev, u_int btns /* 0 is up */, 349 int x, int y, int z, int w, u_int flags) 350 { 351 struct wsmouse_softc *sc = (struct wsmouse_softc *)wsmousedev; 352 struct wseventvar *evar; 353 int mb, ub, d, nevents; 354 /* one for each dimension (4) + a bit for each button */ 355 struct wscons_event events[4 + sizeof(d) * 8]; 356 357 /* 358 * Discard input if not open. 359 */ 360 evar = sc->sc_base.me_evp; 361 if (evar == NULL) 362 return; 363 364 #ifdef DIAGNOSTIC 365 if (evar->q == NULL) { 366 printf("wsmouse_input: evar->q=NULL\n"); 367 return; 368 } 369 #endif 370 371 #if NWSMUX > 0 372 DPRINTFN(5,("wsmouse_input: %s mux=%p, evar=%p\n", 373 sc->sc_base.me_dv.dv_xname, sc->sc_base.me_parent, evar)); 374 #endif 375 376 sc->sc_mb = btns; 377 if (!(flags & WSMOUSE_INPUT_ABSOLUTE_X)) 378 sc->sc_dx += x; 379 if (!(flags & WSMOUSE_INPUT_ABSOLUTE_Y)) 380 sc->sc_dy += y; 381 if (!(flags & WSMOUSE_INPUT_ABSOLUTE_Z)) 382 sc->sc_dz += z; 383 if (!(flags & WSMOUSE_INPUT_ABSOLUTE_W)) 384 sc->sc_dw += w; 385 386 /* 387 * We have at least one event (mouse button, delta-X, or 388 * delta-Y; possibly all three, and possibly three separate 389 * button events). Deliver these events until we are out 390 * of changes or out of room. As events get delivered, 391 * mark them `unchanged'. 392 */ 393 ub = sc->sc_ub; 394 nevents = 0; 395 396 if (flags & WSMOUSE_INPUT_ABSOLUTE_X) { 397 if (sc->sc_x != x) { 398 events[nevents].type = WSCONS_EVENT_MOUSE_ABSOLUTE_X; 399 events[nevents].value = x; 400 nevents++; 401 } 402 } else { 403 if (sc->sc_dx) { 404 events[nevents].type = WSCONS_EVENT_MOUSE_DELTA_X; 405 events[nevents].value = sc->sc_dx; 406 nevents++; 407 } 408 } 409 if (flags & WSMOUSE_INPUT_ABSOLUTE_Y) { 410 if (sc->sc_y != y) { 411 events[nevents].type = WSCONS_EVENT_MOUSE_ABSOLUTE_Y; 412 events[nevents].value = y; 413 nevents++; 414 } 415 } else { 416 if (sc->sc_dy) { 417 events[nevents].type = WSCONS_EVENT_MOUSE_DELTA_Y; 418 events[nevents].value = sc->sc_dy; 419 nevents++; 420 } 421 } 422 if (flags & WSMOUSE_INPUT_ABSOLUTE_Z) { 423 if (sc->sc_z != z) { 424 events[nevents].type = WSCONS_EVENT_MOUSE_ABSOLUTE_Z; 425 events[nevents].value = z; 426 nevents++; 427 } 428 } else { 429 if (sc->sc_dz) { 430 events[nevents].type = WSCONS_EVENT_MOUSE_DELTA_Z; 431 events[nevents].value = sc->sc_dz; 432 nevents++; 433 } 434 } 435 if (flags & WSMOUSE_INPUT_ABSOLUTE_W) { 436 if (sc->sc_w != w) { 437 events[nevents].type = WSCONS_EVENT_MOUSE_ABSOLUTE_W; 438 events[nevents].value = w; 439 nevents++; 440 } 441 } else { 442 if (sc->sc_dw) { 443 events[nevents].type = WSCONS_EVENT_MOUSE_DELTA_W; 444 events[nevents].value = sc->sc_dw; 445 nevents++; 446 } 447 } 448 449 mb = sc->sc_mb; 450 while ((d = mb ^ ub) != 0) { 451 int btnno; 452 453 /* 454 * Cancel button repeating if button status changed. 455 */ 456 if (sc->sc_repeat_button != -1) { 457 KASSERT(sc->sc_repeat_button >= 0); 458 KASSERT(sc->sc_repeat.wr_buttons & 459 (1 << sc->sc_repeat_button)); 460 ub &= ~(1 << sc->sc_repeat_button); 461 sc->sc_repeat_button = -1; 462 callout_stop(&sc->sc_repeat_callout); 463 } 464 465 /* 466 * Mouse button change. Find the first change and drop 467 * it into the event queue. 468 */ 469 btnno = ffs(d) - 1; 470 KASSERT(btnno >= 0); 471 472 if (nevents >= sizeof(events) / sizeof(events[0])) { 473 printf("%s: Event queue full (button status mb=0x%x" 474 " ub=0x%x)\n", sc->sc_base.me_dv.dv_xname, mb, ub); 475 break; 476 } 477 478 events[nevents].type = 479 (mb & d) ? WSCONS_EVENT_MOUSE_DOWN : WSCONS_EVENT_MOUSE_UP; 480 events[nevents].value = btnno; 481 nevents++; 482 483 ub ^= (1 << btnno); 484 485 /* 486 * Program button repeating if configured for this button. 487 */ 488 if ((mb & d) && (sc->sc_repeat.wr_buttons & (1 << btnno)) && 489 sc->sc_repeat.wr_delay_first > 0) { 490 sc->sc_repeat_button = btnno; 491 sc->sc_repeat_delay = sc->sc_repeat.wr_delay_first; 492 callout_schedule(&sc->sc_repeat_callout, 493 mstohz(sc->sc_repeat_delay)); 494 } 495 } 496 497 if (nevents == 0 || wsevent_inject(evar, events, nevents) == 0) { 498 /* All events were correctly injected into the queue. 499 * Synchronize the mouse's status with what the user 500 * has received. */ 501 sc->sc_x = x; sc->sc_dx = 0; 502 sc->sc_y = y; sc->sc_dy = 0; 503 sc->sc_z = z; sc->sc_dz = 0; 504 sc->sc_w = w; sc->sc_dw = 0; 505 sc->sc_ub = ub; 506 #if NWSMUX > 0 507 DPRINTFN(5,("wsmouse_input: %s wakeup evar=%p\n", 508 sc->sc_base.me_dv.dv_xname, evar)); 509 #endif 510 } 511 } 512 513 static void 514 wsmouse_repeat(void *v) 515 { 516 int oldspl; 517 unsigned int newdelay; 518 struct wsmouse_softc *sc; 519 struct wscons_event events[2]; 520 521 oldspl = spltty(); 522 sc = (struct wsmouse_softc *)v; 523 524 if (sc->sc_repeat_button == -1) { 525 /* Race condition: a "button up" event came in when 526 * this function was already called but did not do 527 * spltty() yet. */ 528 splx(oldspl); 529 return; 530 } 531 KASSERT(sc->sc_repeat_button >= 0); 532 533 KASSERT(sc->sc_repeat.wr_buttons & (1 << sc->sc_repeat_button)); 534 535 newdelay = sc->sc_repeat_delay; 536 537 events[0].type = WSCONS_EVENT_MOUSE_UP; 538 events[0].value = sc->sc_repeat_button; 539 events[1].type = WSCONS_EVENT_MOUSE_DOWN; 540 events[1].value = sc->sc_repeat_button; 541 542 if (wsevent_inject(sc->sc_base.me_evp, events, 2) == 0) { 543 sc->sc_ub = 1 << sc->sc_repeat_button; 544 545 if (newdelay - sc->sc_repeat.wr_delay_decrement < 546 sc->sc_repeat.wr_delay_minimum) 547 newdelay = sc->sc_repeat.wr_delay_minimum; 548 else if (newdelay > sc->sc_repeat.wr_delay_minimum) 549 newdelay -= sc->sc_repeat.wr_delay_decrement; 550 KASSERT(newdelay >= sc->sc_repeat.wr_delay_minimum && 551 newdelay <= sc->sc_repeat.wr_delay_first); 552 } 553 554 /* 555 * Reprogram the repeating event. 556 */ 557 sc->sc_repeat_delay = newdelay; 558 callout_schedule(&sc->sc_repeat_callout, mstohz(newdelay)); 559 560 splx(oldspl); 561 } 562 563 int 564 wsmouseopen(dev_t dev, int flags, int mode, struct lwp *l) 565 { 566 struct wsmouse_softc *sc; 567 struct wseventvar *evar; 568 int error, unit; 569 570 unit = minor(dev); 571 if (unit >= wsmouse_cd.cd_ndevs || /* make sure it was attached */ 572 (sc = wsmouse_cd.cd_devs[unit]) == NULL) 573 return (ENXIO); 574 575 #if NWSMUX > 0 576 DPRINTF(("wsmouseopen: %s mux=%p p=%p\n", sc->sc_base.me_dv.dv_xname, 577 sc->sc_base.me_parent, l)); 578 #endif 579 580 if (sc->sc_dying) 581 return (EIO); 582 583 if ((flags & (FREAD | FWRITE)) == FWRITE) 584 return (0); /* always allow open for write 585 so ioctl() is possible. */ 586 587 if (sc->sc_base.me_evp != NULL) 588 return (EBUSY); 589 590 evar = &sc->sc_base.me_evar; 591 wsevent_init(evar, l->l_proc); 592 sc->sc_base.me_evp = evar; 593 594 error = wsmousedoopen(sc, evar); 595 if (error) { 596 DPRINTF(("wsmouseopen: %s open failed\n", 597 sc->sc_base.me_dv.dv_xname)); 598 sc->sc_base.me_evp = NULL; 599 wsevent_fini(evar); 600 } 601 return (error); 602 } 603 604 int 605 wsmouseclose(dev_t dev, int flags, int mode, 606 struct lwp *l) 607 { 608 struct wsmouse_softc *sc = 609 (struct wsmouse_softc *)wsmouse_cd.cd_devs[minor(dev)]; 610 struct wseventvar *evar = sc->sc_base.me_evp; 611 612 if (evar == NULL) 613 /* not open for read */ 614 return (0); 615 sc->sc_base.me_evp = NULL; 616 (*sc->sc_accessops->disable)(sc->sc_accesscookie); 617 wsevent_fini(evar); 618 619 return (0); 620 } 621 622 int 623 wsmousedoopen(struct wsmouse_softc *sc, struct wseventvar *evp) 624 { 625 sc->sc_base.me_evp = evp; 626 sc->sc_x = INVALID_X; 627 sc->sc_y = INVALID_Y; 628 sc->sc_z = INVALID_Z; 629 630 /* Stop button repeating when messing with the device. */ 631 if (sc->sc_repeat_button != -1) { 632 KASSERT(sc->sc_repeat_button >= 0); 633 sc->sc_repeat_button = -1; 634 callout_stop(&sc->sc_repeat_callout); 635 } 636 637 /* enable the device, and punt if that's not possible */ 638 return (*sc->sc_accessops->enable)(sc->sc_accesscookie); 639 } 640 641 int 642 wsmouseread(dev_t dev, struct uio *uio, int flags) 643 { 644 struct wsmouse_softc *sc = wsmouse_cd.cd_devs[minor(dev)]; 645 int error; 646 647 if (sc->sc_dying) 648 return (EIO); 649 650 #ifdef DIAGNOSTIC 651 if (sc->sc_base.me_evp == NULL) { 652 printf("wsmouseread: evp == NULL\n"); 653 return (EINVAL); 654 } 655 #endif 656 657 sc->sc_refcnt++; 658 error = wsevent_read(sc->sc_base.me_evp, uio, flags); 659 if (--sc->sc_refcnt < 0) { 660 wakeup(sc); 661 error = EIO; 662 } 663 return (error); 664 } 665 666 int 667 wsmouseioctl(dev_t dev, u_long cmd, void *data, int flag, struct lwp *l) 668 { 669 return (wsmousedoioctl(wsmouse_cd.cd_devs[minor(dev)], 670 cmd, data, flag, l)); 671 } 672 673 /* A wrapper around the ioctl() workhorse to make reference counting easy. */ 674 int 675 wsmousedoioctl(struct device *dv, u_long cmd, void *data, int flag, 676 struct lwp *l) 677 { 678 struct wsmouse_softc *sc = (struct wsmouse_softc *)dv; 679 int error; 680 681 sc->sc_refcnt++; 682 error = wsmouse_do_ioctl(sc, cmd, data, flag, l); 683 if (--sc->sc_refcnt < 0) 684 wakeup(sc); 685 return (error); 686 } 687 688 int 689 wsmouse_do_ioctl(struct wsmouse_softc *sc, u_long cmd, void *data, 690 int flag, struct lwp *l) 691 { 692 int error; 693 struct wsmouse_repeat *wr; 694 695 if (sc->sc_dying) 696 return (EIO); 697 698 /* 699 * Try the generic ioctls that the wsmouse interface supports. 700 */ 701 switch (cmd) { 702 case FIONBIO: /* we will remove this someday (soon???) */ 703 return (0); 704 705 case FIOASYNC: 706 if (sc->sc_base.me_evp == NULL) 707 return (EINVAL); 708 sc->sc_base.me_evp->async = *(int *)data != 0; 709 return (0); 710 711 case FIOSETOWN: 712 if (sc->sc_base.me_evp == NULL) 713 return (EINVAL); 714 if (-*(int *)data != sc->sc_base.me_evp->io->p_pgid 715 && *(int *)data != sc->sc_base.me_evp->io->p_pid) 716 return (EPERM); 717 return (0); 718 719 case TIOCSPGRP: 720 if (sc->sc_base.me_evp == NULL) 721 return (EINVAL); 722 if (*(int *)data != sc->sc_base.me_evp->io->p_pgid) 723 return (EPERM); 724 return (0); 725 } 726 727 /* 728 * Try the wsmouse specific ioctls. 729 */ 730 switch (cmd) { 731 case WSMOUSEIO_GETREPEAT: 732 wr = (struct wsmouse_repeat *)data; 733 memcpy(wr, &sc->sc_repeat, sizeof(sc->sc_repeat)); 734 return 0; 735 736 case WSMOUSEIO_SETREPEAT: 737 if ((flag & FWRITE) == 0) 738 return EACCES; 739 740 /* Validate input data. */ 741 wr = (struct wsmouse_repeat *)data; 742 if (wr->wr_delay_first != 0 && 743 (wr->wr_delay_first < wr->wr_delay_decrement || 744 wr->wr_delay_first < wr->wr_delay_minimum || 745 wr->wr_delay_first < wr->wr_delay_minimum + 746 wr->wr_delay_decrement)) 747 return EINVAL; 748 749 /* Stop current repeating and set new data. */ 750 sc->sc_repeat_button = -1; 751 callout_stop(&sc->sc_repeat_callout); 752 memcpy(&sc->sc_repeat, wr, sizeof(sc->sc_repeat)); 753 754 return 0; 755 } 756 757 /* 758 * Try the mouse driver for WSMOUSEIO ioctls. It returns -1 759 * if it didn't recognize the request. 760 */ 761 error = (*sc->sc_accessops->ioctl)(sc->sc_accesscookie, cmd, 762 data, flag, l); 763 return (error); /* may be EPASSTHROUGH */ 764 } 765 766 int 767 wsmousepoll(dev_t dev, int events, struct lwp *l) 768 { 769 struct wsmouse_softc *sc = wsmouse_cd.cd_devs[minor(dev)]; 770 771 if (sc->sc_base.me_evp == NULL) 772 return (POLLERR); 773 return (wsevent_poll(sc->sc_base.me_evp, events, l)); 774 } 775 776 int 777 wsmousekqfilter(dev_t dev, struct knote *kn) 778 { 779 struct wsmouse_softc *sc = wsmouse_cd.cd_devs[minor(dev)]; 780 781 if (sc->sc_base.me_evp == NULL) 782 return (1); 783 return (wsevent_kqfilter(sc->sc_base.me_evp, kn)); 784 } 785 786 #if NWSMUX > 0 787 int 788 wsmouse_mux_open(struct wsevsrc *me, struct wseventvar *evp) 789 { 790 struct wsmouse_softc *sc = (struct wsmouse_softc *)me; 791 792 if (sc->sc_base.me_evp != NULL) 793 return (EBUSY); 794 795 return wsmousedoopen(sc, evp); 796 } 797 798 int 799 wsmouse_mux_close(struct wsevsrc *me) 800 { 801 struct wsmouse_softc *sc = (struct wsmouse_softc *)me; 802 803 sc->sc_base.me_evp = NULL; 804 (*sc->sc_accessops->disable)(sc->sc_accesscookie); 805 806 return (0); 807 } 808 809 int 810 wsmouse_add_mux(int unit, struct wsmux_softc *muxsc) 811 { 812 struct wsmouse_softc *sc; 813 814 if (unit < 0 || unit >= wsmouse_cd.cd_ndevs || 815 (sc = wsmouse_cd.cd_devs[unit]) == NULL) 816 return (ENXIO); 817 818 if (sc->sc_base.me_parent != NULL || sc->sc_base.me_evp != NULL) 819 return (EBUSY); 820 821 return (wsmux_attach_sc(muxsc, &sc->sc_base)); 822 } 823 #endif /* NWSMUX > 0 */ 824
Indexes created Mon Oct 20 11:09:49 GMT 2025