1/* $NetBSD: wsmouse.c,v 1.66 2014/07/25 08:10:39 dholland 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 1.66 2014/07/25 08:10:39 dholland 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
137extern 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#define INVALID_W INT_MAX
147
148struct wsmouse_softc {
149 struct wsevsrc sc_base;
150
151 const struct wsmouse_accessops *sc_accessops;
152 void *sc_accesscookie;
153
154 u_int sc_mb; /* mouse button state */
155 u_int sc_ub; /* user button state */
156 int sc_dx; /* delta-x */
157 int sc_dy; /* delta-y */
158 int sc_dz; /* delta-z */
159 int sc_dw; /* delta-w */
160 int sc_x; /* absolute-x */
161 int sc_y; /* absolute-y */
162 int sc_z; /* absolute-z */
163 int sc_w; /* absolute-w */
164
165 int sc_refcnt;
166 u_char sc_dying; /* device is being detached */
167
168 struct wsmouse_repeat sc_repeat;
169 int sc_repeat_button;
170 callout_t sc_repeat_callout;
171 unsigned int sc_repeat_delay;
172};
173
174static int wsmouse_match(device_t, cfdata_t, void *);
175static void wsmouse_attach(device_t, device_t, void *);
176static int wsmouse_detach(device_t, int);
177static int wsmouse_activate(device_t, enum devact);
178
179static int wsmouse_do_ioctl(struct wsmouse_softc *, u_long, void *,
180 int, struct lwp *);
181
182#if NWSMUX > 0
183static int wsmouse_mux_open(struct wsevsrc *, struct wseventvar *);
184static int wsmouse_mux_close(struct wsevsrc *);
185#endif
186
187static int wsmousedoioctl(device_t, u_long, void *, int, struct lwp *);
188
189static int wsmousedoopen(struct wsmouse_softc *, struct wseventvar *);
190
191CFATTACH_DECL_NEW(wsmouse, sizeof (struct wsmouse_softc),
192 wsmouse_match, wsmouse_attach, wsmouse_detach, wsmouse_activate);
193
194static void wsmouse_repeat(void *v);
195
196extern struct cfdriver wsmouse_cd;
197
198dev_type_open(wsmouseopen);
199dev_type_close(wsmouseclose);
200dev_type_read(wsmouseread);
201dev_type_ioctl(wsmouseioctl);
202dev_type_poll(wsmousepoll);
203dev_type_kqfilter(wsmousekqfilter);
204
205const struct cdevsw wsmouse_cdevsw = {
206 .d_open = wsmouseopen,
207 .d_close = wsmouseclose,
208 .d_read = wsmouseread,
209 .d_write = nowrite,
210 .d_ioctl = wsmouseioctl,
211 .d_stop = nostop,
212 .d_tty = notty,
213 .d_poll = wsmousepoll,
214 .d_mmap = nommap,
215 .d_kqfilter = wsmousekqfilter,
216 .d_discard = nodiscard,
217 .d_flag = D_OTHER
218};
219
220#if NWSMUX > 0
221struct wssrcops wsmouse_srcops = {
222 WSMUX_MOUSE,
223 wsmouse_mux_open, wsmouse_mux_close, wsmousedoioctl, NULL, NULL
224};
225#endif
226
227/*
228 * Print function (for parent devices).
229 */
230int
231wsmousedevprint(void *aux, const char *pnp)
232{
233
234 if (pnp)
235 aprint_normal("wsmouse at %s", pnp);
236 return (UNCONF);
237}
238
239int
240wsmouse_match(device_t parent, cfdata_t match, void *aux)
241{
242 return (1);
243}
244
245void
246wsmouse_attach(device_t parent, device_t self, void *aux)
247{
248 struct wsmouse_softc *sc = device_private(self);
249 struct wsmousedev_attach_args *ap = aux;
250#if NWSMUX > 0
251 int mux, error;
252#endif
253
254 sc->sc_base.me_dv = self;
255 sc->sc_accessops = ap->accessops;
256 sc->sc_accesscookie = ap->accesscookie;
257
258 /* Initialize button repeating. */
259 memset(&sc->sc_repeat, 0, sizeof(sc->sc_repeat));
260 sc->sc_repeat_button = -1;
261 sc->sc_repeat_delay = 0;
262 callout_init(&sc->sc_repeat_callout, 0);
263 callout_setfunc(&sc->sc_repeat_callout, wsmouse_repeat, sc);
264
265#if NWSMUX > 0
266 sc->sc_base.me_ops = &wsmouse_srcops;
267 mux = device_cfdata(self)->wsmousedevcf_mux;
268 if (mux >= 0) {
269 error = wsmux_attach_sc(wsmux_getmux(mux), &sc->sc_base);
270 if (error)
271 aprint_error(" attach error=%d", error);
272 else
273 aprint_normal(" mux %d", mux);
274 }
275#else
276 if (device_cfdata(self)->wsmousedevcf_mux >= 0)
277 aprint_normal(" (mux ignored)");
278#endif
279
280 aprint_naive("\n");
281 aprint_normal("\n");
282
283 if (!pmf_device_register(self, NULL, NULL))
284 aprint_error_dev(self, "couldn't establish power handler\n");
285}
286
287int
288wsmouse_activate(device_t self, enum devact act)
289{
290 struct wsmouse_softc *sc = device_private(self);
291
292 if (act == DVACT_DEACTIVATE)
293 sc->sc_dying = 1;
294 return (0);
295}
296
297/*
298 * Detach a mouse. To keep track of users of the softc we keep
299 * a reference count that's incremented while inside, e.g., read.
300 * If the mouse is active and the reference count is > 0 (0 is the
301 * normal state) we post an event and then wait for the process
302 * that had the reference to wake us up again. Then we blow away the
303 * vnode and return (which will deallocate the softc).
304 */
305int
306wsmouse_detach(device_t self, int flags)
307{
308 struct wsmouse_softc *sc = device_private(self);
309 struct wseventvar *evar;
310 int maj, mn;
311 int s;
312
313#if NWSMUX > 0
314 /* Tell parent mux we're leaving. */
315 if (sc->sc_base.me_parent != NULL) {
316 DPRINTF(("wsmouse_detach:\n"));
317 wsmux_detach_sc(&sc->sc_base);
318 }
319#endif
320
321 /* If we're open ... */
322 evar = sc->sc_base.me_evp;
323 if (evar != NULL && evar->io != NULL) {
324 s = spltty();
325 if (--sc->sc_refcnt >= 0) {
326 struct wscons_event event;
327
328 /* Wake everyone by generating a dummy event. */
329 event.type = 0;
330 event.value = 0;
331 if (wsevent_inject(evar, &event, 1) != 0)
332 wsevent_wakeup(evar);
333
334 /* Wait for processes to go away. */
335 if (tsleep(sc, PZERO, "wsmdet", hz * 60))
336 printf("wsmouse_detach: %s didn't detach\n",
337 device_xname(self));
338 }
339 splx(s);
340 }
341
342 /* locate the major number */
343 maj = cdevsw_lookup_major(&wsmouse_cdevsw);
344
345 /* Nuke the vnodes for any open instances (calls close). */
346 mn = device_unit(self);
347 vdevgone(maj, mn, mn, VCHR);
348
349 return (0);
350}
351
352void
353wsmouse_input(device_t wsmousedev, u_int btns /* 0 is up */,
354 int x, int y, int z, int w, u_int flags)
355{
356 struct wsmouse_softc *sc = device_private(wsmousedev);
357 struct wseventvar *evar;
358 int mb, ub, d, nevents;
359 /* one for each dimension (4) + a bit for each button */
360 struct wscons_event events[4 + sizeof(d) * 8];
361
362 /*
363 * Discard input if not open.
364 */
365 evar = sc->sc_base.me_evp;
366 if (evar == NULL)
367 return;
368
369#ifdef DIAGNOSTIC
370 if (evar->q == NULL) {
371 printf("wsmouse_input: evar->q=NULL\n");
372 return;
373 }
374#endif
375
376#if NWSMUX > 0
377 DPRINTFN(5,("wsmouse_input: %s mux=%p, evar=%p\n",
378 device_xname(sc->sc_base.me_dv),
379 sc->sc_base.me_parent, evar));
380#endif
381
382 sc->sc_mb = btns;
383 if (!(flags & WSMOUSE_INPUT_ABSOLUTE_X))
384 sc->sc_dx += x;
385 if (!(flags & WSMOUSE_INPUT_ABSOLUTE_Y))
386 sc->sc_dy += y;
387 if (!(flags & WSMOUSE_INPUT_ABSOLUTE_Z))
388 sc->sc_dz += z;
389 if (!(flags & WSMOUSE_INPUT_ABSOLUTE_W))
390 sc->sc_dw += w;
391
392 /*
393 * We have at least one event (mouse button, delta-X, or
394 * delta-Y; possibly all three, and possibly three separate
395 * button events). Deliver these events until we are out
396 * of changes or out of room. As events get delivered,
397 * mark them `unchanged'.
398 */
399 ub = sc->sc_ub;
400 nevents = 0;
401
402 if (flags & WSMOUSE_INPUT_ABSOLUTE_X) {
403 if (sc->sc_x != x) {
404 events[nevents].type = WSCONS_EVENT_MOUSE_ABSOLUTE_X;
405 events[nevents].value = x;
406 nevents++;
407 }
408 } else {
409 if (sc->sc_dx) {
410 events[nevents].type = WSCONS_EVENT_MOUSE_DELTA_X;
411 events[nevents].value = sc->sc_dx;
412 nevents++;
413 }
414 }
415 if (flags & WSMOUSE_INPUT_ABSOLUTE_Y) {
416 if (sc->sc_y != y) {
417 events[nevents].type = WSCONS_EVENT_MOUSE_ABSOLUTE_Y;
418 events[nevents].value = y;
419 nevents++;
420 }
421 } else {
422 if (sc->sc_dy) {
423 events[nevents].type = WSCONS_EVENT_MOUSE_DELTA_Y;
424 events[nevents].value = sc->sc_dy;
425 nevents++;
426 }
427 }
428 if (flags & WSMOUSE_INPUT_ABSOLUTE_Z) {
429 if (sc->sc_z != z) {
430 events[nevents].type = WSCONS_EVENT_MOUSE_ABSOLUTE_Z;
431 events[nevents].value = z;
432 nevents++;
433 }
434 } else {
435 if (sc->sc_dz) {
436 events[nevents].type = WSCONS_EVENT_MOUSE_DELTA_Z;
437 events[nevents].value = sc->sc_dz;
438 nevents++;
439 }
440 }
441 if (flags & WSMOUSE_INPUT_ABSOLUTE_W) {
442 if (sc->sc_w != w) {
443 events[nevents].type = WSCONS_EVENT_MOUSE_ABSOLUTE_W;
444 events[nevents].value = w;
445 nevents++;
446 }
447 } else {
448 if (sc->sc_dw) {
449 events[nevents].type = WSCONS_EVENT_MOUSE_DELTA_W;
450 events[nevents].value = sc->sc_dw;
451 nevents++;
452 }
453 }
454
455 mb = sc->sc_mb;
456 while ((d = mb ^ ub) != 0) {
457 int btnno;
458
459 /*
460 * Cancel button repeating if button status changed.
461 */
462 if (sc->sc_repeat_button != -1) {
463 KASSERT(sc->sc_repeat_button >= 0);
464 KASSERT(sc->sc_repeat.wr_buttons &
465 (1 << sc->sc_repeat_button));
466 ub &= ~(1 << sc->sc_repeat_button);
467 sc->sc_repeat_button = -1;
468 callout_stop(&sc->sc_repeat_callout);
469 }
470
471 /*
472 * Mouse button change. Find the first change and drop
473 * it into the event queue.
474 */
475 btnno = ffs(d) - 1;
476 KASSERT(btnno >= 0);
477
478 if (nevents >= sizeof(events) / sizeof(events[0])) {
479 aprint_error_dev(sc->sc_base.me_dv,
480 "Event queue full (button status mb=0x%x"
481 " ub=0x%x)\n", mb, ub);
482 break;
483 }
484
485 events[nevents].type =
486 (mb & d) ? WSCONS_EVENT_MOUSE_DOWN : WSCONS_EVENT_MOUSE_UP;
487 events[nevents].value = btnno;
488 nevents++;
489
490 ub ^= (1 << btnno);
491
492 /*
493 * Program button repeating if configured for this button.
494 */
495 if ((mb & d) && (sc->sc_repeat.wr_buttons & (1 << btnno)) &&
496 sc->sc_repeat.wr_delay_first > 0) {
497 sc->sc_repeat_button = btnno;
498 sc->sc_repeat_delay = sc->sc_repeat.wr_delay_first;
499 callout_schedule(&sc->sc_repeat_callout,
500 mstohz(sc->sc_repeat_delay));
501 }
502 }
503
504 if (nevents == 0 || wsevent_inject(evar, events, nevents) == 0) {
505 /* All events were correctly injected into the queue.
506 * Synchronize the mouse's status with what the user
507 * has received. */
508 sc->sc_x = x; sc->sc_dx = 0;
509 sc->sc_y = y; sc->sc_dy = 0;
510 sc->sc_z = z; sc->sc_dz = 0;
511 sc->sc_w = w; sc->sc_dw = 0;
512 sc->sc_ub = ub;
513#if NWSMUX > 0
514 DPRINTFN(5,("wsmouse_input: %s wakeup evar=%p\n",
515 device_xname(sc->sc_base.me_dv), evar));
516#endif
517 }
518}
519
520static void
521wsmouse_repeat(void *v)
522{
523 int oldspl;
524 unsigned int newdelay;
525 struct wsmouse_softc *sc;
526 struct wscons_event events[2];
527
528 oldspl = spltty();
529 sc = (struct wsmouse_softc *)v;
530
531 if (sc->sc_repeat_button == -1) {
532 /* Race condition: a "button up" event came in when
533 * this function was already called but did not do
534 * spltty() yet. */
535 splx(oldspl);
536 return;
537 }
538 KASSERT(sc->sc_repeat_button >= 0);
539
540 KASSERT(sc->sc_repeat.wr_buttons & (1 << sc->sc_repeat_button));
541
542 newdelay = sc->sc_repeat_delay;
543
544 events[0].type = WSCONS_EVENT_MOUSE_UP;
545 events[0].value = sc->sc_repeat_button;
546 events[1].type = WSCONS_EVENT_MOUSE_DOWN;
547 events[1].value = sc->sc_repeat_button;
548
549 if (wsevent_inject(sc->sc_base.me_evp, events, 2) == 0) {
550 sc->sc_ub = 1 << sc->sc_repeat_button;
551
552 if (newdelay - sc->sc_repeat.wr_delay_decrement <
553 sc->sc_repeat.wr_delay_minimum)
554 newdelay = sc->sc_repeat.wr_delay_minimum;
555 else if (newdelay > sc->sc_repeat.wr_delay_minimum)
556 newdelay -= sc->sc_repeat.wr_delay_decrement;
557 KASSERT(newdelay >= sc->sc_repeat.wr_delay_minimum &&
558 newdelay <= sc->sc_repeat.wr_delay_first);
559 }
560
561 /*
562 * Reprogram the repeating event.
563 */
564 sc->sc_repeat_delay = newdelay;
565 callout_schedule(&sc->sc_repeat_callout, mstohz(newdelay));
566
567 splx(oldspl);
568}
569
570int
571wsmouseopen(dev_t dev, int flags, int mode, struct lwp *l)
572{
573 struct wsmouse_softc *sc;
574 struct wseventvar *evar;
575 int error;
576
577 sc = device_lookup_private(&wsmouse_cd, minor(dev));
578 if (sc == NULL)
579 return ENXIO;
580
581#if NWSMUX > 0
582 DPRINTF(("wsmouseopen: %s mux=%p p=%p\n", device_xname(sc->sc_base.me_dv),
583 sc->sc_base.me_parent, l));
584#endif
585
586 if (sc->sc_dying)
587 return (EIO);
588
589 if ((flags & (FREAD | FWRITE)) == FWRITE)
590 return (0); /* always allow open for write
591 so ioctl() is possible. */
592
593 if (sc->sc_base.me_evp != NULL)
594 return (EBUSY);
595
596 evar = &sc->sc_base.me_evar;
597 wsevent_init(evar, l->l_proc);
598 sc->sc_base.me_evp = evar;
599
600 error = wsmousedoopen(sc, evar);
601 if (error) {
602 DPRINTF(("wsmouseopen: %s open failed\n",
603 device_xname(sc->sc_base.me_dv)));
604 sc->sc_base.me_evp = NULL;
605 wsevent_fini(evar);
606 }
607 return (error);
608}
609
610int
611wsmouseclose(dev_t dev, int flags, int mode,
612 struct lwp *l)
613{
614 struct wsmouse_softc *sc =
615 device_lookup_private(&wsmouse_cd, minor(dev));
616 struct wseventvar *evar = sc->sc_base.me_evp;
617
618 if (evar == NULL)
619 /* not open for read */
620 return (0);
621 sc->sc_base.me_evp = NULL;
622 (*sc->sc_accessops->disable)(sc->sc_accesscookie);
623 wsevent_fini(evar);
624
625 return (0);
626}
627
628int
629wsmousedoopen(struct wsmouse_softc *sc, struct wseventvar *evp)
630{
631 sc->sc_base.me_evp = evp;
632 sc->sc_x = INVALID_X;
633 sc->sc_y = INVALID_Y;
634 sc->sc_z = INVALID_Z;
635 sc->sc_w = INVALID_W;
636
637 /* Stop button repeating when messing with the device. */
638 if (sc->sc_repeat_button != -1) {
639 KASSERT(sc->sc_repeat_button >= 0);
640 sc->sc_repeat_button = -1;
641 callout_stop(&sc->sc_repeat_callout);
642 }
643
644 /* enable the device, and punt if that's not possible */
645 return (*sc->sc_accessops->enable)(sc->sc_accesscookie);
646}
647
648int
649wsmouseread(dev_t dev, struct uio *uio, int flags)
650{
651 struct wsmouse_softc *sc =
652 device_lookup_private(&wsmouse_cd, minor(dev));
653 int error;
654
655 if (sc->sc_dying)
656 return (EIO);
657
658#ifdef DIAGNOSTIC
659 if (sc->sc_base.me_evp == NULL) {
660 printf("wsmouseread: evp == NULL\n");
661 return (EINVAL);
662 }
663#endif
664
665 sc->sc_refcnt++;
666 error = wsevent_read(sc->sc_base.me_evp, uio, flags);
667 if (--sc->sc_refcnt < 0) {
668 wakeup(sc);
669 error = EIO;
670 }
671 return (error);
672}
673
674int
675wsmouseioctl(dev_t dev, u_long cmd, void *data, int flag, struct lwp *l)
676{
677 return (wsmousedoioctl(device_lookup(&wsmouse_cd, minor(dev)),
678 cmd, data, flag, l));
679}
680
681/* A wrapper around the ioctl() workhorse to make reference counting easy. */
682int
683wsmousedoioctl(device_t dv, u_long cmd, void *data, int flag,
684 struct lwp *l)
685{
686 struct wsmouse_softc *sc = device_private(dv);
687 int error;
688
689 sc->sc_refcnt++;
690 error = wsmouse_do_ioctl(sc, cmd, data, flag, l);
691 if (--sc->sc_refcnt < 0)
692 wakeup(sc);
693 return (error);
694}
695
696int
697wsmouse_do_ioctl(struct wsmouse_softc *sc, u_long cmd, void *data,
698 int flag, struct lwp *l)
699{
700 int error;
701 struct wsmouse_repeat *wr;
702
703 if (sc->sc_dying)
704 return (EIO);
705
706 /*
707 * Try the generic ioctls that the wsmouse interface supports.
708 */
709 switch (cmd) {
710 case FIONBIO: /* we will remove this someday (soon???) */
711 return (0);
712
713 case FIOASYNC:
714 if (sc->sc_base.me_evp == NULL)
715 return (EINVAL);
716 sc->sc_base.me_evp->async = *(int *)data != 0;
717 return (0);
718
719 case FIOSETOWN:
720 if (sc->sc_base.me_evp == NULL)
721 return (EINVAL);
722 if (-*(int *)data != sc->sc_base.me_evp->io->p_pgid
723 && *(int *)data != sc->sc_base.me_evp->io->p_pid)
724 return (EPERM);
725 return (0);
726
727 case TIOCSPGRP:
728 if (sc->sc_base.me_evp == NULL)
729 return (EINVAL);
730 if (*(int *)data != sc->sc_base.me_evp->io->p_pgid)
731 return (EPERM);
732 return (0);
733 }
734
735 /*
736 * Try the wsmouse specific ioctls.
737 */
738 switch (cmd) {
739 case WSMOUSEIO_GETREPEAT:
740 wr = (struct wsmouse_repeat *)data;
741 memcpy(wr, &sc->sc_repeat, sizeof(sc->sc_repeat));
742 return 0;
743
744 case WSMOUSEIO_SETREPEAT:
745 if ((flag & FWRITE) == 0)
746 return EACCES;
747
748 /* Validate input data. */
749 wr = (struct wsmouse_repeat *)data;
750 if (wr->wr_delay_first != 0 &&
751 (wr->wr_delay_first < wr->wr_delay_decrement ||
752 wr->wr_delay_first < wr->wr_delay_minimum ||
753 wr->wr_delay_first < wr->wr_delay_minimum +
754 wr->wr_delay_decrement))
755 return EINVAL;
756
757 /* Stop current repeating and set new data. */
758 sc->sc_repeat_button = -1;
759 callout_stop(&sc->sc_repeat_callout);
760 memcpy(&sc->sc_repeat, wr, sizeof(sc->sc_repeat));
761
762 return 0;
763
764 case WSMOUSEIO_SETVERSION:
765 return wsevent_setversion(sc->sc_base.me_evp, *(int *)data);
766 }
767
768 /*
769 * Try the mouse driver for WSMOUSEIO ioctls. It returns -1
770 * if it didn't recognize the request.
771 */
772 error = (*sc->sc_accessops->ioctl)(sc->sc_accesscookie, cmd,
773 data, flag, l);
774 return (error); /* may be EPASSTHROUGH */
775}
776
777int
778wsmousepoll(dev_t dev, int events, struct lwp *l)
779{
780 struct wsmouse_softc *sc =
781 device_lookup_private(&wsmouse_cd, minor(dev));
782
783 if (sc->sc_base.me_evp == NULL)
784 return (POLLERR);
785 return (wsevent_poll(sc->sc_base.me_evp, events, l));
786}
787
788int
789wsmousekqfilter(dev_t dev, struct knote *kn)
790{
791 struct wsmouse_softc *sc =
792 device_lookup_private(&wsmouse_cd, minor(dev));
793
794 if (sc->sc_base.me_evp == NULL)
795 return (1);
796 return (wsevent_kqfilter(sc->sc_base.me_evp, kn));
797}
798
799#if NWSMUX > 0
800int
801wsmouse_mux_open(struct wsevsrc *me, struct wseventvar *evp)
802{
803 struct wsmouse_softc *sc = (struct wsmouse_softc *)me;
804
805 if (sc->sc_base.me_evp != NULL)
806 return (EBUSY);
807
808 return wsmousedoopen(sc, evp);
809}
810
811int
812wsmouse_mux_close(struct wsevsrc *me)
813{
814 struct wsmouse_softc *sc = (struct wsmouse_softc *)me;
815
816 sc->sc_base.me_evp = NULL;
817 (*sc->sc_accessops->disable)(sc->sc_accesscookie);
818
819 return (0);
820}
821
822int
823wsmouse_add_mux(int unit, struct wsmux_softc *muxsc)
824{
825 struct wsmouse_softc *sc;
826
827 sc = device_lookup_private(&wsmouse_cd, unit);
828 if (sc == NULL)
829 return ENXIO;
830
831 if (sc->sc_base.me_parent != NULL || sc->sc_base.me_evp != NULL)
832 return (EBUSY);
833
834 return (wsmux_attach_sc(muxsc, &sc->sc_base));
835}
836#endif /* NWSMUX > 0 */
837