wsmouse.c revision 1.55.10.5
1 /* $NetBSD: wsmouse.c,v 1.55.10.5 2008/06/29 09:33:11 mjf 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 * 19 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 20 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 21 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 22 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 23 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 24 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 25 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 26 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 27 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 28 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 29 * POSSIBILITY OF SUCH DAMAGE. 30 */ 31 32 /* 33 * Copyright (c) 1996, 1997 Christopher G. Demetriou. All rights reserved. 34 * 35 * Redistribution and use in source and binary forms, with or without 36 * modification, are permitted provided that the following conditions 37 * are met: 38 * 1. Redistributions of source code must retain the above copyright 39 * notice, this list of conditions and the following disclaimer. 40 * 2. Redistributions in binary form must reproduce the above copyright 41 * notice, this list of conditions and the following disclaimer in the 42 * documentation and/or other materials provided with the distribution. 43 * 3. All advertising materials mentioning features or use of this software 44 * must display the following acknowledgement: 45 * This product includes software developed by Christopher G. Demetriou 46 * for the NetBSD Project. 47 * 4. The name of the author may not be used to endorse or promote products 48 * derived from this software without specific prior written permission 49 * 50 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 51 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 52 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 53 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 54 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 55 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 56 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 57 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 58 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 59 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 60 */ 61 62 /* 63 * Copyright (c) 1992, 1993 64 * The Regents of the University of California. All rights reserved. 65 * 66 * This software was developed by the Computer Systems Engineering group 67 * at Lawrence Berkeley Laboratory under DARPA contract BG 91-66 and 68 * contributed to Berkeley. 69 * 70 * All advertising materials mentioning features or use of this software 71 * must display the following acknowledgement: 72 * This product includes software developed by the University of 73 * California, Lawrence Berkeley Laboratory. 74 * 75 * Redistribution and use in source and binary forms, with or without 76 * modification, are permitted provided that the following conditions 77 * are met: 78 * 1. Redistributions of source code must retain the above copyright 79 * notice, this list of conditions and the following disclaimer. 80 * 2. Redistributions in binary form must reproduce the above copyright 81 * notice, this list of conditions and the following disclaimer in the 82 * documentation and/or other materials provided with the distribution. 83 * 3. Neither the name of the University nor the names of its contributors 84 * may be used to endorse or promote products derived from this software 85 * without specific prior written permission. 86 * 87 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 88 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 89 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 90 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 91 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 92 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 93 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 94 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 95 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 96 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 97 * SUCH DAMAGE. 98 * 99 * @(#)ms.c 8.1 (Berkeley) 6/11/93 100 */ 101 102 /* 103 * Mouse driver. 104 */ 105 106 #include <sys/cdefs.h> 107 __KERNEL_RCSID(0, "$NetBSD: wsmouse.c,v 1.55.10.5 2008/06/29 09:33:11 mjf Exp $"); 108 109 #include "wsmouse.h" 110 #include "wsdisplay.h" 111 #include "wsmux.h" 112 113 #include <sys/param.h> 114 #include <sys/conf.h> 115 #include <sys/ioctl.h> 116 #include <sys/poll.h> 117 #include <sys/fcntl.h> 118 #include <sys/kernel.h> 119 #include <sys/proc.h> 120 #include <sys/syslog.h> 121 #include <sys/systm.h> 122 #include <sys/tty.h> 123 #include <sys/signalvar.h> 124 #include <sys/device.h> 125 #include <sys/vnode.h> 126 #include <sys/callout.h> 127 #include <sys/malloc.h> 128 129 #include <dev/wscons/wsconsio.h> 130 #include <dev/wscons/wsmousevar.h> 131 #include <dev/wscons/wseventvar.h> 132 #include <dev/wscons/wsmuxvar.h> 133 134 #if defined(WSMUX_DEBUG) && NWSMUX > 0 135 #define DPRINTF(x) if (wsmuxdebug) printf x 136 #define DPRINTFN(n,x) if (wsmuxdebug > (n)) printf x 137 extern int wsmuxdebug; 138 #else 139 #define DPRINTF(x) 140 #define DPRINTFN(n,x) 141 #endif 142 143 #define INVALID_X INT_MAX 144 #define INVALID_Y INT_MAX 145 #define INVALID_Z INT_MAX 146 147 struct wsmouse_softc { 148 struct wsevsrc sc_base; 149 150 const struct wsmouse_accessops *sc_accessops; 151 void *sc_accesscookie; 152 153 u_int sc_mb; /* mouse button state */ 154 u_int sc_ub; /* user button state */ 155 int sc_dx; /* delta-x */ 156 int sc_dy; /* delta-y */ 157 int sc_dz; /* delta-z */ 158 int sc_dw; /* delta-w */ 159 int sc_x; /* absolute-x */ 160 int sc_y; /* absolute-y */ 161 int sc_z; /* absolute-z */ 162 int sc_w; /* absolute-w */ 163 164 int sc_refcnt; 165 u_char sc_dying; /* device is being detached */ 166 167 struct wsmouse_repeat sc_repeat; 168 int sc_repeat_button; 169 callout_t sc_repeat_callout; 170 unsigned int sc_repeat_delay; 171 }; 172 173 static int wsmouse_match(device_t, cfdata_t, void *); 174 static void wsmouse_attach(device_t, device_t, void *); 175 static int wsmouse_detach(device_t, int); 176 static int wsmouse_activate(device_t, enum devact); 177 178 static int wsmouse_do_ioctl(struct wsmouse_softc *, u_long, void *, 179 int, struct lwp *); 180 181 #if NWSMUX > 0 182 static int wsmouse_mux_open(struct wsevsrc *, struct wseventvar *); 183 static int wsmouse_mux_close(struct wsevsrc *); 184 #endif 185 186 static int wsmousedoioctl(device_t, u_long, void *, int, struct lwp *); 187 188 static int wsmousedoopen(struct wsmouse_softc *, struct wseventvar *); 189 190 CFATTACH_DECL_NEW(wsmouse, sizeof (struct wsmouse_softc), 191 wsmouse_match, wsmouse_attach, wsmouse_detach, wsmouse_activate); 192 193 static void wsmouse_repeat(void *v); 194 195 extern struct cfdriver wsmouse_cd; 196 197 dev_type_open(wsmouseopen); 198 dev_type_close(wsmouseclose); 199 dev_type_read(wsmouseread); 200 dev_type_ioctl(wsmouseioctl); 201 dev_type_poll(wsmousepoll); 202 dev_type_kqfilter(wsmousekqfilter); 203 204 const struct cdevsw wsmouse_cdevsw = { 205 wsmouseopen, wsmouseclose, wsmouseread, nowrite, wsmouseioctl, 206 nostop, notty, wsmousepoll, nommap, wsmousekqfilter, D_OTHER 207 }; 208 209 #if NWSMUX > 0 210 struct wssrcops wsmouse_srcops = { 211 WSMUX_MOUSE, 212 wsmouse_mux_open, wsmouse_mux_close, wsmousedoioctl, NULL, NULL 213 }; 214 #endif 215 216 /* 217 * Print function (for parent devices). 218 */ 219 int 220 wsmousedevprint(void *aux, const char *pnp) 221 { 222 223 if (pnp) 224 aprint_normal("wsmouse at %s", pnp); 225 return (UNCONF); 226 } 227 228 int 229 wsmouse_match(device_t parent, cfdata_t match, void *aux) 230 { 231 return (1); 232 } 233 234 void 235 wsmouse_attach(device_t parent, device_t self, void *aux) 236 { 237 struct wsmouse_softc *sc = device_private(self); 238 struct wsmousedev_attach_args *ap = aux; 239 #if NWSMUX > 0 240 int mux, error; 241 #endif 242 int major; 243 244 sc->sc_base.me_dv = self; 245 sc->sc_accessops = ap->accessops; 246 sc->sc_accesscookie = ap->accesscookie; 247 248 /* Initialize button repeating. */ 249 memset(&sc->sc_repeat, 0, sizeof(sc->sc_repeat)); 250 sc->sc_repeat_button = -1; 251 sc->sc_repeat_delay = 0; 252 callout_init(&sc->sc_repeat_callout, 0); 253 callout_setfunc(&sc->sc_repeat_callout, wsmouse_repeat, sc); 254 255 #if NWSMUX > 0 256 sc->sc_base.me_ops = &wsmouse_srcops; 257 mux = device_cfdata(self)->wsmousedevcf_mux; 258 if (mux >= 0) { 259 error = wsmux_attach_sc(wsmux_getmux(mux), &sc->sc_base); 260 if (error) 261 aprint_error(" attach error=%d", error); 262 else 263 aprint_normal(" mux %d", mux); 264 } 265 #else 266 if (device_cfdata(self)->wsmousedevcf_mux >= 0) 267 aprint_normal(" (mux ignored)"); 268 #endif 269 270 aprint_naive("\n"); 271 aprint_normal("\n"); 272 273 if (!pmf_device_register(self, NULL, NULL)) 274 aprint_error_dev(self, "couldn't establish power handler\n"); 275 276 major = cdevsw_lookup_major(&wsmouse_cdevsw); 277 device_register_name(makedev(major, device_unit(self)), self, 278 true, DEV_OTHER, device_xname(self)); 279 } 280 281 int 282 wsmouse_activate(device_t self, enum devact act) 283 { 284 struct wsmouse_softc *sc = device_private(self); 285 286 if (act == DVACT_DEACTIVATE) 287 sc->sc_dying = 1; 288 return (0); 289 } 290 291 /* 292 * Detach a mouse. To keep track of users of the softc we keep 293 * a reference count that's incremented while inside, e.g., read. 294 * If the mouse is active and the reference count is > 0 (0 is the 295 * normal state) we post an event and then wait for the process 296 * that had the reference to wake us up again. Then we blow away the 297 * vnode and return (which will deallocate the softc). 298 */ 299 int 300 wsmouse_detach(device_t self, int flags) 301 { 302 struct wsmouse_softc *sc = device_private(self); 303 struct wseventvar *evar; 304 int maj, mn; 305 int s; 306 307 #if NWSMUX > 0 308 /* Tell parent mux we're leaving. */ 309 if (sc->sc_base.me_parent != NULL) { 310 DPRINTF(("wsmouse_detach:\n")); 311 wsmux_detach_sc(&sc->sc_base); 312 } 313 #endif 314 315 /* If we're open ... */ 316 evar = sc->sc_base.me_evp; 317 if (evar != NULL && evar->io != NULL) { 318 s = spltty(); 319 if (--sc->sc_refcnt >= 0) { 320 struct wscons_event event; 321 322 /* Wake everyone by generating a dummy event. */ 323 event.type = 0; 324 event.value = 0; 325 if (wsevent_inject(evar, &event, 1) != 0) 326 wsevent_wakeup(evar); 327 328 /* Wait for processes to go away. */ 329 if (tsleep(sc, PZERO, "wsmdet", hz * 60)) 330 printf("wsmouse_detach: %s didn't detach\n", 331 device_xname(self)); 332 } 333 splx(s); 334 } 335 336 device_deregister_all(self); 337 338 /* locate the major number */ 339 maj = cdevsw_lookup_major(&wsmouse_cdevsw); 340 341 /* Nuke the vnodes for any open instances (calls close). */ 342 mn = device_unit(self); 343 vdevgone(maj, mn, mn, VCHR); 344 345 return (0); 346 } 347 348 void 349 wsmouse_input(device_t wsmousedev, u_int btns /* 0 is up */, 350 int x, int y, int z, int w, u_int flags) 351 { 352 struct wsmouse_softc *sc = device_private(wsmousedev); 353 struct wseventvar *evar; 354 int mb, ub, d, nevents; 355 /* one for each dimension (4) + a bit for each button */ 356 struct wscons_event events[4 + sizeof(d) * 8]; 357 358 /* 359 * Discard input if not open. 360 */ 361 evar = sc->sc_base.me_evp; 362 if (evar == NULL) 363 return; 364 365 #ifdef DIAGNOSTIC 366 if (evar->q == NULL) { 367 printf("wsmouse_input: evar->q=NULL\n"); 368 return; 369 } 370 #endif 371 372 #if NWSMUX > 0 373 DPRINTFN(5,("wsmouse_input: %s mux=%p, evar=%p\n", 374 device_xname(sc->sc_base.me_dv), 375 sc->sc_base.me_parent, evar)); 376 #endif 377 378 sc->sc_mb = btns; 379 if (!(flags & WSMOUSE_INPUT_ABSOLUTE_X)) 380 sc->sc_dx += x; 381 if (!(flags & WSMOUSE_INPUT_ABSOLUTE_Y)) 382 sc->sc_dy += y; 383 if (!(flags & WSMOUSE_INPUT_ABSOLUTE_Z)) 384 sc->sc_dz += z; 385 if (!(flags & WSMOUSE_INPUT_ABSOLUTE_W)) 386 sc->sc_dw += w; 387 388 /* 389 * We have at least one event (mouse button, delta-X, or 390 * delta-Y; possibly all three, and possibly three separate 391 * button events). Deliver these events until we are out 392 * of changes or out of room. As events get delivered, 393 * mark them `unchanged'. 394 */ 395 ub = sc->sc_ub; 396 nevents = 0; 397 398 if (flags & WSMOUSE_INPUT_ABSOLUTE_X) { 399 if (sc->sc_x != x) { 400 events[nevents].type = WSCONS_EVENT_MOUSE_ABSOLUTE_X; 401 events[nevents].value = x; 402 nevents++; 403 } 404 } else { 405 if (sc->sc_dx) { 406 events[nevents].type = WSCONS_EVENT_MOUSE_DELTA_X; 407 events[nevents].value = sc->sc_dx; 408 nevents++; 409 } 410 } 411 if (flags & WSMOUSE_INPUT_ABSOLUTE_Y) { 412 if (sc->sc_y != y) { 413 events[nevents].type = WSCONS_EVENT_MOUSE_ABSOLUTE_Y; 414 events[nevents].value = y; 415 nevents++; 416 } 417 } else { 418 if (sc->sc_dy) { 419 events[nevents].type = WSCONS_EVENT_MOUSE_DELTA_Y; 420 events[nevents].value = sc->sc_dy; 421 nevents++; 422 } 423 } 424 if (flags & WSMOUSE_INPUT_ABSOLUTE_Z) { 425 if (sc->sc_z != z) { 426 events[nevents].type = WSCONS_EVENT_MOUSE_ABSOLUTE_Z; 427 events[nevents].value = z; 428 nevents++; 429 } 430 } else { 431 if (sc->sc_dz) { 432 events[nevents].type = WSCONS_EVENT_MOUSE_DELTA_Z; 433 events[nevents].value = sc->sc_dz; 434 nevents++; 435 } 436 } 437 if (flags & WSMOUSE_INPUT_ABSOLUTE_W) { 438 if (sc->sc_w != w) { 439 events[nevents].type = WSCONS_EVENT_MOUSE_ABSOLUTE_W; 440 events[nevents].value = w; 441 nevents++; 442 } 443 } else { 444 if (sc->sc_dw) { 445 events[nevents].type = WSCONS_EVENT_MOUSE_DELTA_W; 446 events[nevents].value = sc->sc_dw; 447 nevents++; 448 } 449 } 450 451 mb = sc->sc_mb; 452 while ((d = mb ^ ub) != 0) { 453 int btnno; 454 455 /* 456 * Cancel button repeating if button status changed. 457 */ 458 if (sc->sc_repeat_button != -1) { 459 KASSERT(sc->sc_repeat_button >= 0); 460 KASSERT(sc->sc_repeat.wr_buttons & 461 (1 << sc->sc_repeat_button)); 462 ub &= ~(1 << sc->sc_repeat_button); 463 sc->sc_repeat_button = -1; 464 callout_stop(&sc->sc_repeat_callout); 465 } 466 467 /* 468 * Mouse button change. Find the first change and drop 469 * it into the event queue. 470 */ 471 btnno = ffs(d) - 1; 472 KASSERT(btnno >= 0); 473 474 if (nevents >= sizeof(events) / sizeof(events[0])) { 475 aprint_error_dev(sc->sc_base.me_dv, 476 "Event queue full (button status mb=0x%x" 477 " ub=0x%x)\n", mb, ub); 478 break; 479 } 480 481 events[nevents].type = 482 (mb & d) ? WSCONS_EVENT_MOUSE_DOWN : WSCONS_EVENT_MOUSE_UP; 483 events[nevents].value = btnno; 484 nevents++; 485 486 ub ^= (1 << btnno); 487 488 /* 489 * Program button repeating if configured for this button. 490 */ 491 if ((mb & d) && (sc->sc_repeat.wr_buttons & (1 << btnno)) && 492 sc->sc_repeat.wr_delay_first > 0) { 493 sc->sc_repeat_button = btnno; 494 sc->sc_repeat_delay = sc->sc_repeat.wr_delay_first; 495 callout_schedule(&sc->sc_repeat_callout, 496 mstohz(sc->sc_repeat_delay)); 497 } 498 } 499 500 if (nevents == 0 || wsevent_inject(evar, events, nevents) == 0) { 501 /* All events were correctly injected into the queue. 502 * Synchronize the mouse's status with what the user 503 * has received. */ 504 sc->sc_x = x; sc->sc_dx = 0; 505 sc->sc_y = y; sc->sc_dy = 0; 506 sc->sc_z = z; sc->sc_dz = 0; 507 sc->sc_w = w; sc->sc_dw = 0; 508 sc->sc_ub = ub; 509 #if NWSMUX > 0 510 DPRINTFN(5,("wsmouse_input: %s wakeup evar=%p\n", 511 device_xname(sc->sc_base.me_dv), evar)); 512 #endif 513 } 514 } 515 516 static void 517 wsmouse_repeat(void *v) 518 { 519 int oldspl; 520 unsigned int newdelay; 521 struct wsmouse_softc *sc; 522 struct wscons_event events[2]; 523 524 oldspl = spltty(); 525 sc = (struct wsmouse_softc *)v; 526 527 if (sc->sc_repeat_button == -1) { 528 /* Race condition: a "button up" event came in when 529 * this function was already called but did not do 530 * spltty() yet. */ 531 splx(oldspl); 532 return; 533 } 534 KASSERT(sc->sc_repeat_button >= 0); 535 536 KASSERT(sc->sc_repeat.wr_buttons & (1 << sc->sc_repeat_button)); 537 538 newdelay = sc->sc_repeat_delay; 539 540 events[0].type = WSCONS_EVENT_MOUSE_UP; 541 events[0].value = sc->sc_repeat_button; 542 events[1].type = WSCONS_EVENT_MOUSE_DOWN; 543 events[1].value = sc->sc_repeat_button; 544 545 if (wsevent_inject(sc->sc_base.me_evp, events, 2) == 0) { 546 sc->sc_ub = 1 << sc->sc_repeat_button; 547 548 if (newdelay - sc->sc_repeat.wr_delay_decrement < 549 sc->sc_repeat.wr_delay_minimum) 550 newdelay = sc->sc_repeat.wr_delay_minimum; 551 else if (newdelay > sc->sc_repeat.wr_delay_minimum) 552 newdelay -= sc->sc_repeat.wr_delay_decrement; 553 KASSERT(newdelay >= sc->sc_repeat.wr_delay_minimum && 554 newdelay <= sc->sc_repeat.wr_delay_first); 555 } 556 557 /* 558 * Reprogram the repeating event. 559 */ 560 sc->sc_repeat_delay = newdelay; 561 callout_schedule(&sc->sc_repeat_callout, mstohz(newdelay)); 562 563 splx(oldspl); 564 } 565 566 int 567 wsmouseopen(dev_t dev, int flags, int mode, struct lwp *l) 568 { 569 struct wsmouse_softc *sc; 570 struct wseventvar *evar; 571 int error; 572 573 sc = device_lookup_private(&wsmouse_cd, minor(dev)); 574 if (sc == NULL) 575 return ENXIO; 576 577 #if NWSMUX > 0 578 DPRINTF(("wsmouseopen: %s mux=%p p=%p\n", device_xname(sc->sc_base.me_dv), 579 sc->sc_base.me_parent, l)); 580 #endif 581 582 if (sc->sc_dying) 583 return (EIO); 584 585 if ((flags & (FREAD | FWRITE)) == FWRITE) 586 return (0); /* always allow open for write 587 so ioctl() is possible. */ 588 589 if (sc->sc_base.me_evp != NULL) 590 return (EBUSY); 591 592 evar = &sc->sc_base.me_evar; 593 wsevent_init(evar, l->l_proc); 594 sc->sc_base.me_evp = evar; 595 596 error = wsmousedoopen(sc, evar); 597 if (error) { 598 DPRINTF(("wsmouseopen: %s open failed\n", 599 device_xname(sc->sc_base.me_dv))); 600 sc->sc_base.me_evp = NULL; 601 wsevent_fini(evar); 602 } 603 return (error); 604 } 605 606 int 607 wsmouseclose(dev_t dev, int flags, int mode, 608 struct lwp *l) 609 { 610 struct wsmouse_softc *sc = 611 device_lookup_private(&wsmouse_cd, minor(dev)); 612 struct wseventvar *evar = sc->sc_base.me_evp; 613 614 if (evar == NULL) 615 /* not open for read */ 616 return (0); 617 sc->sc_base.me_evp = NULL; 618 (*sc->sc_accessops->disable)(sc->sc_accesscookie); 619 wsevent_fini(evar); 620 621 return (0); 622 } 623 624 int 625 wsmousedoopen(struct wsmouse_softc *sc, struct wseventvar *evp) 626 { 627 sc->sc_base.me_evp = evp; 628 sc->sc_x = INVALID_X; 629 sc->sc_y = INVALID_Y; 630 sc->sc_z = INVALID_Z; 631 632 /* Stop button repeating when messing with the device. */ 633 if (sc->sc_repeat_button != -1) { 634 KASSERT(sc->sc_repeat_button >= 0); 635 sc->sc_repeat_button = -1; 636 callout_stop(&sc->sc_repeat_callout); 637 } 638 639 /* enable the device, and punt if that's not possible */ 640 return (*sc->sc_accessops->enable)(sc->sc_accesscookie); 641 } 642 643 int 644 wsmouseread(dev_t dev, struct uio *uio, int flags) 645 { 646 struct wsmouse_softc *sc = 647 device_lookup_private(&wsmouse_cd, minor(dev)); 648 int error; 649 650 if (sc->sc_dying) 651 return (EIO); 652 653 #ifdef DIAGNOSTIC 654 if (sc->sc_base.me_evp == NULL) { 655 printf("wsmouseread: evp == NULL\n"); 656 return (EINVAL); 657 } 658 #endif 659 660 sc->sc_refcnt++; 661 error = wsevent_read(sc->sc_base.me_evp, uio, flags); 662 if (--sc->sc_refcnt < 0) { 663 wakeup(sc); 664 error = EIO; 665 } 666 return (error); 667 } 668 669 int 670 wsmouseioctl(dev_t dev, u_long cmd, void *data, int flag, struct lwp *l) 671 { 672 return (wsmousedoioctl(device_lookup(&wsmouse_cd, minor(dev)), 673 cmd, data, flag, l)); 674 } 675 676 /* A wrapper around the ioctl() workhorse to make reference counting easy. */ 677 int 678 wsmousedoioctl(device_t dv, u_long cmd, void *data, int flag, 679 struct lwp *l) 680 { 681 struct wsmouse_softc *sc = device_private(dv); 682 int error; 683 684 sc->sc_refcnt++; 685 error = wsmouse_do_ioctl(sc, cmd, data, flag, l); 686 if (--sc->sc_refcnt < 0) 687 wakeup(sc); 688 return (error); 689 } 690 691 int 692 wsmouse_do_ioctl(struct wsmouse_softc *sc, u_long cmd, void *data, 693 int flag, struct lwp *l) 694 { 695 int error; 696 struct wsmouse_repeat *wr; 697 698 if (sc->sc_dying) 699 return (EIO); 700 701 /* 702 * Try the generic ioctls that the wsmouse interface supports. 703 */ 704 switch (cmd) { 705 case FIONBIO: /* we will remove this someday (soon???) */ 706 return (0); 707 708 case FIOASYNC: 709 if (sc->sc_base.me_evp == NULL) 710 return (EINVAL); 711 sc->sc_base.me_evp->async = *(int *)data != 0; 712 return (0); 713 714 case FIOSETOWN: 715 if (sc->sc_base.me_evp == NULL) 716 return (EINVAL); 717 if (-*(int *)data != sc->sc_base.me_evp->io->p_pgid 718 && *(int *)data != sc->sc_base.me_evp->io->p_pid) 719 return (EPERM); 720 return (0); 721 722 case TIOCSPGRP: 723 if (sc->sc_base.me_evp == NULL) 724 return (EINVAL); 725 if (*(int *)data != sc->sc_base.me_evp->io->p_pgid) 726 return (EPERM); 727 return (0); 728 } 729 730 /* 731 * Try the wsmouse specific ioctls. 732 */ 733 switch (cmd) { 734 case WSMOUSEIO_GETREPEAT: 735 wr = (struct wsmouse_repeat *)data; 736 memcpy(wr, &sc->sc_repeat, sizeof(sc->sc_repeat)); 737 return 0; 738 739 case WSMOUSEIO_SETREPEAT: 740 if ((flag & FWRITE) == 0) 741 return EACCES; 742 743 /* Validate input data. */ 744 wr = (struct wsmouse_repeat *)data; 745 if (wr->wr_delay_first != 0 && 746 (wr->wr_delay_first < wr->wr_delay_decrement || 747 wr->wr_delay_first < wr->wr_delay_minimum || 748 wr->wr_delay_first < wr->wr_delay_minimum + 749 wr->wr_delay_decrement)) 750 return EINVAL; 751 752 /* Stop current repeating and set new data. */ 753 sc->sc_repeat_button = -1; 754 callout_stop(&sc->sc_repeat_callout); 755 memcpy(&sc->sc_repeat, wr, sizeof(sc->sc_repeat)); 756 757 return 0; 758 } 759 760 /* 761 * Try the mouse driver for WSMOUSEIO ioctls. It returns -1 762 * if it didn't recognize the request. 763 */ 764 error = (*sc->sc_accessops->ioctl)(sc->sc_accesscookie, cmd, 765 data, flag, l); 766 return (error); /* may be EPASSTHROUGH */ 767 } 768 769 int 770 wsmousepoll(dev_t dev, int events, struct lwp *l) 771 { 772 struct wsmouse_softc *sc = 773 device_lookup_private(&wsmouse_cd, minor(dev)); 774 775 if (sc->sc_base.me_evp == NULL) 776 return (POLLERR); 777 return (wsevent_poll(sc->sc_base.me_evp, events, l)); 778 } 779 780 int 781 wsmousekqfilter(dev_t dev, struct knote *kn) 782 { 783 struct wsmouse_softc *sc = 784 device_lookup_private(&wsmouse_cd, minor(dev)); 785 786 if (sc->sc_base.me_evp == NULL) 787 return (1); 788 return (wsevent_kqfilter(sc->sc_base.me_evp, kn)); 789 } 790 791 #if NWSMUX > 0 792 int 793 wsmouse_mux_open(struct wsevsrc *me, struct wseventvar *evp) 794 { 795 struct wsmouse_softc *sc = (struct wsmouse_softc *)me; 796 797 if (sc->sc_base.me_evp != NULL) 798 return (EBUSY); 799 800 return wsmousedoopen(sc, evp); 801 } 802 803 int 804 wsmouse_mux_close(struct wsevsrc *me) 805 { 806 struct wsmouse_softc *sc = (struct wsmouse_softc *)me; 807 808 sc->sc_base.me_evp = NULL; 809 (*sc->sc_accessops->disable)(sc->sc_accesscookie); 810 811 return (0); 812 } 813 814 int 815 wsmouse_add_mux(int unit, struct wsmux_softc *muxsc) 816 { 817 struct wsmouse_softc *sc; 818 819 sc = device_lookup_private(&wsmouse_cd, unit); 820 if (sc == NULL) 821 return ENXIO; 822 823 if (sc->sc_base.me_parent != NULL || sc->sc_base.me_evp != NULL) 824 return (EBUSY); 825 826 return (wsmux_attach_sc(muxsc, &sc->sc_base)); 827 } 828 #endif /* NWSMUX > 0 */ 829
Indexes created Mon Oct 20 11:09:49 GMT 2025