wsmouse.c revision 1.56
1 /* $NetBSD: wsmouse.c,v 1.56 2008/03/25 00:49:20 cube 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 1.56 2008/03/25 00:49:20 cube 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(device_t, cfdata_t, void *); 181 static void wsmouse_attach(device_t, device_t, void *); 182 static int wsmouse_detach(device_t, int); 183 static int wsmouse_activate(device_t, 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(device_t, u_long, void *, int, struct lwp *); 194 195 static int wsmousedoopen(struct wsmouse_softc *, struct wseventvar *); 196 197 CFATTACH_DECL_NEW(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(device_t parent, cfdata_t match, void *aux) 237 { 238 return (1); 239 } 240 241 void 242 wsmouse_attach(device_t parent, device_t self, void *aux) 243 { 244 struct wsmouse_softc *sc = device_private(self); 245 struct wsmousedev_attach_args *ap = aux; 246 #if NWSMUX > 0 247 int mux, error; 248 #endif 249 250 sc->sc_base.me_dv = self; 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(self)->wsmousedevcf_mux; 264 if (mux >= 0) { 265 error = wsmux_attach_sc(wsmux_getmux(mux), &sc->sc_base); 266 if (error) 267 aprint_error(" attach error=%d", error); 268 else 269 aprint_normal(" mux %d", mux); 270 } 271 #else 272 if (device_cfdata(self)->wsmousedevcf_mux >= 0) 273 aprint_normal(" (mux ignored)"); 274 #endif 275 276 aprint_naive("\n"); 277 aprint_normal("\n"); 278 279 if (!pmf_device_register(self, NULL, NULL)) 280 aprint_error_dev(self, "couldn't establish power handler\n"); 281 } 282 283 int 284 wsmouse_activate(device_t self, enum devact act) 285 { 286 struct wsmouse_softc *sc = device_private(self); 287 288 if (act == DVACT_DEACTIVATE) 289 sc->sc_dying = 1; 290 return (0); 291 } 292 293 /* 294 * Detach a mouse. To keep track of users of the softc we keep 295 * a reference count that's incremented while inside, e.g., read. 296 * If the mouse is active and the reference count is > 0 (0 is the 297 * normal state) we post an event and then wait for the process 298 * that had the reference to wake us up again. Then we blow away the 299 * vnode and return (which will deallocate the softc). 300 */ 301 int 302 wsmouse_detach(device_t self, int flags) 303 { 304 struct wsmouse_softc *sc = device_private(self); 305 struct wseventvar *evar; 306 int maj, mn; 307 int s; 308 309 #if NWSMUX > 0 310 /* Tell parent mux we're leaving. */ 311 if (sc->sc_base.me_parent != NULL) { 312 DPRINTF(("wsmouse_detach:\n")); 313 wsmux_detach_sc(&sc->sc_base); 314 } 315 #endif 316 317 /* If we're open ... */ 318 evar = sc->sc_base.me_evp; 319 if (evar != NULL && evar->io != NULL) { 320 s = spltty(); 321 if (--sc->sc_refcnt >= 0) { 322 struct wscons_event event; 323 324 /* Wake everyone by generating a dummy event. */ 325 event.type = 0; 326 event.value = 0; 327 if (wsevent_inject(evar, &event, 1) != 0) 328 wsevent_wakeup(evar); 329 330 /* Wait for processes to go away. */ 331 if (tsleep(sc, PZERO, "wsmdet", hz * 60)) 332 printf("wsmouse_detach: %s didn't detach\n", 333 device_xname(self)); 334 } 335 splx(s); 336 } 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, unit; 572 573 unit = minor(dev); 574 if (unit >= wsmouse_cd.cd_ndevs || /* make sure it was attached */ 575 (sc = device_private(wsmouse_cd.cd_devs[unit])) == NULL) 576 return (ENXIO); 577 578 #if NWSMUX > 0 579 DPRINTF(("wsmouseopen: %s mux=%p p=%p\n", sc->sc_base.me_dv.dv_xname, 580 sc->sc_base.me_parent, l)); 581 #endif 582 583 if (sc->sc_dying) 584 return (EIO); 585 586 if ((flags & (FREAD | FWRITE)) == FWRITE) 587 return (0); /* always allow open for write 588 so ioctl() is possible. */ 589 590 if (sc->sc_base.me_evp != NULL) 591 return (EBUSY); 592 593 evar = &sc->sc_base.me_evar; 594 wsevent_init(evar, l->l_proc); 595 sc->sc_base.me_evp = evar; 596 597 error = wsmousedoopen(sc, evar); 598 if (error) { 599 DPRINTF(("wsmouseopen: %s open failed\n", 600 sc->sc_base.me_dv.dv_xname)); 601 sc->sc_base.me_evp = NULL; 602 wsevent_fini(evar); 603 } 604 return (error); 605 } 606 607 int 608 wsmouseclose(dev_t dev, int flags, int mode, 609 struct lwp *l) 610 { 611 struct wsmouse_softc *sc = 612 device_private(wsmouse_cd.cd_devs[minor(dev)]); 613 struct wseventvar *evar = sc->sc_base.me_evp; 614 615 if (evar == NULL) 616 /* not open for read */ 617 return (0); 618 sc->sc_base.me_evp = NULL; 619 (*sc->sc_accessops->disable)(sc->sc_accesscookie); 620 wsevent_fini(evar); 621 622 return (0); 623 } 624 625 int 626 wsmousedoopen(struct wsmouse_softc *sc, struct wseventvar *evp) 627 { 628 sc->sc_base.me_evp = evp; 629 sc->sc_x = INVALID_X; 630 sc->sc_y = INVALID_Y; 631 sc->sc_z = INVALID_Z; 632 633 /* Stop button repeating when messing with the device. */ 634 if (sc->sc_repeat_button != -1) { 635 KASSERT(sc->sc_repeat_button >= 0); 636 sc->sc_repeat_button = -1; 637 callout_stop(&sc->sc_repeat_callout); 638 } 639 640 /* enable the device, and punt if that's not possible */ 641 return (*sc->sc_accessops->enable)(sc->sc_accesscookie); 642 } 643 644 int 645 wsmouseread(dev_t dev, struct uio *uio, int flags) 646 { 647 struct wsmouse_softc *sc = 648 device_private(wsmouse_cd.cd_devs[minor(dev)]); 649 int error; 650 651 if (sc->sc_dying) 652 return (EIO); 653 654 #ifdef DIAGNOSTIC 655 if (sc->sc_base.me_evp == NULL) { 656 printf("wsmouseread: evp == NULL\n"); 657 return (EINVAL); 658 } 659 #endif 660 661 sc->sc_refcnt++; 662 error = wsevent_read(sc->sc_base.me_evp, uio, flags); 663 if (--sc->sc_refcnt < 0) { 664 wakeup(sc); 665 error = EIO; 666 } 667 return (error); 668 } 669 670 int 671 wsmouseioctl(dev_t dev, u_long cmd, void *data, int flag, struct lwp *l) 672 { 673 return (wsmousedoioctl(wsmouse_cd.cd_devs[minor(dev)], 674 cmd, data, flag, l)); 675 } 676 677 /* A wrapper around the ioctl() workhorse to make reference counting easy. */ 678 int 679 wsmousedoioctl(device_t dv, u_long cmd, void *data, int flag, 680 struct lwp *l) 681 { 682 struct wsmouse_softc *sc = device_private(dv); 683 int error; 684 685 sc->sc_refcnt++; 686 error = wsmouse_do_ioctl(sc, cmd, data, flag, l); 687 if (--sc->sc_refcnt < 0) 688 wakeup(sc); 689 return (error); 690 } 691 692 int 693 wsmouse_do_ioctl(struct wsmouse_softc *sc, u_long cmd, void *data, 694 int flag, struct lwp *l) 695 { 696 int error; 697 struct wsmouse_repeat *wr; 698 699 if (sc->sc_dying) 700 return (EIO); 701 702 /* 703 * Try the generic ioctls that the wsmouse interface supports. 704 */ 705 switch (cmd) { 706 case FIONBIO: /* we will remove this someday (soon???) */ 707 return (0); 708 709 case FIOASYNC: 710 if (sc->sc_base.me_evp == NULL) 711 return (EINVAL); 712 sc->sc_base.me_evp->async = *(int *)data != 0; 713 return (0); 714 715 case FIOSETOWN: 716 if (sc->sc_base.me_evp == NULL) 717 return (EINVAL); 718 if (-*(int *)data != sc->sc_base.me_evp->io->p_pgid 719 && *(int *)data != sc->sc_base.me_evp->io->p_pid) 720 return (EPERM); 721 return (0); 722 723 case TIOCSPGRP: 724 if (sc->sc_base.me_evp == NULL) 725 return (EINVAL); 726 if (*(int *)data != sc->sc_base.me_evp->io->p_pgid) 727 return (EPERM); 728 return (0); 729 } 730 731 /* 732 * Try the wsmouse specific ioctls. 733 */ 734 switch (cmd) { 735 case WSMOUSEIO_GETREPEAT: 736 wr = (struct wsmouse_repeat *)data; 737 memcpy(wr, &sc->sc_repeat, sizeof(sc->sc_repeat)); 738 return 0; 739 740 case WSMOUSEIO_SETREPEAT: 741 if ((flag & FWRITE) == 0) 742 return EACCES; 743 744 /* Validate input data. */ 745 wr = (struct wsmouse_repeat *)data; 746 if (wr->wr_delay_first != 0 && 747 (wr->wr_delay_first < wr->wr_delay_decrement || 748 wr->wr_delay_first < wr->wr_delay_minimum || 749 wr->wr_delay_first < wr->wr_delay_minimum + 750 wr->wr_delay_decrement)) 751 return EINVAL; 752 753 /* Stop current repeating and set new data. */ 754 sc->sc_repeat_button = -1; 755 callout_stop(&sc->sc_repeat_callout); 756 memcpy(&sc->sc_repeat, wr, sizeof(sc->sc_repeat)); 757 758 return 0; 759 } 760 761 /* 762 * Try the mouse driver for WSMOUSEIO ioctls. It returns -1 763 * if it didn't recognize the request. 764 */ 765 error = (*sc->sc_accessops->ioctl)(sc->sc_accesscookie, cmd, 766 data, flag, l); 767 return (error); /* may be EPASSTHROUGH */ 768 } 769 770 int 771 wsmousepoll(dev_t dev, int events, struct lwp *l) 772 { 773 struct wsmouse_softc *sc = 774 device_private(wsmouse_cd.cd_devs[minor(dev)]); 775 776 if (sc->sc_base.me_evp == NULL) 777 return (POLLERR); 778 return (wsevent_poll(sc->sc_base.me_evp, events, l)); 779 } 780 781 int 782 wsmousekqfilter(dev_t dev, struct knote *kn) 783 { 784 struct wsmouse_softc *sc = 785 device_private(wsmouse_cd.cd_devs[minor(dev)]); 786 787 if (sc->sc_base.me_evp == NULL) 788 return (1); 789 return (wsevent_kqfilter(sc->sc_base.me_evp, kn)); 790 } 791 792 #if NWSMUX > 0 793 int 794 wsmouse_mux_open(struct wsevsrc *me, struct wseventvar *evp) 795 { 796 struct wsmouse_softc *sc = (struct wsmouse_softc *)me; 797 798 if (sc->sc_base.me_evp != NULL) 799 return (EBUSY); 800 801 return wsmousedoopen(sc, evp); 802 } 803 804 int 805 wsmouse_mux_close(struct wsevsrc *me) 806 { 807 struct wsmouse_softc *sc = (struct wsmouse_softc *)me; 808 809 sc->sc_base.me_evp = NULL; 810 (*sc->sc_accessops->disable)(sc->sc_accesscookie); 811 812 return (0); 813 } 814 815 int 816 wsmouse_add_mux(int unit, struct wsmux_softc *muxsc) 817 { 818 struct wsmouse_softc *sc; 819 820 if (unit < 0 || unit >= wsmouse_cd.cd_ndevs || 821 (sc = device_private(wsmouse_cd.cd_devs[unit])) == NULL) 822 return (ENXIO); 823 824 if (sc->sc_base.me_parent != NULL || sc->sc_base.me_evp != NULL) 825 return (EBUSY); 826 827 return (wsmux_attach_sc(muxsc, &sc->sc_base)); 828 } 829 #endif /* NWSMUX > 0 */ 830
Indexes created Mon Sep 29 03:10:08 GMT 2025