xref: /netbsd-src/sys/dev/wscons/wskbd.c (revision 9fbd88883c38d0c0fbfcbe66d76fe6b0fab3f9de)
1 /* $NetBSD: wskbd.c,v 1.60 2002/01/12 16:41:02 tsutsui Exp $ */
2 
3 /*
4  * Copyright (c) 1996, 1997 Christopher G. Demetriou.  All rights reserved.
5  *
6  * Keysym translator:
7  * Contributed to The NetBSD Foundation by Juergen Hannken-Illjes.
8  *
9  * Redistribution and use in source and binary forms, with or without
10  * modification, are permitted provided that the following conditions
11  * are met:
12  * 1. Redistributions of source code must retain the above copyright
13  *    notice, this list of conditions and the following disclaimer.
14  * 2. Redistributions in binary form must reproduce the above copyright
15  *    notice, this list of conditions and the following disclaimer in the
16  *    documentation and/or other materials provided with the distribution.
17  * 3. All advertising materials mentioning features or use of this software
18  *    must display the following acknowledgement:
19  *      This product includes software developed by Christopher G. Demetriou
20  *	for the NetBSD Project.
21  * 4. The name of the author may not be used to endorse or promote products
22  *    derived from this software without specific prior written permission
23  *
24  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
25  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
26  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
27  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
28  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
29  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
30  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
31  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
32  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
33  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
34  */
35 
36 /*
37  * Copyright (c) 1992, 1993
38  *	The Regents of the University of California.  All rights reserved.
39  *
40  * This software was developed by the Computer Systems Engineering group
41  * at Lawrence Berkeley Laboratory under DARPA contract BG 91-66 and
42  * contributed to Berkeley.
43  *
44  * All advertising materials mentioning features or use of this software
45  * must display the following acknowledgement:
46  *	This product includes software developed by the University of
47  *	California, Lawrence Berkeley Laboratory.
48  *
49  * Redistribution and use in source and binary forms, with or without
50  * modification, are permitted provided that the following conditions
51  * are met:
52  * 1. Redistributions of source code must retain the above copyright
53  *    notice, this list of conditions and the following disclaimer.
54  * 2. Redistributions in binary form must reproduce the above copyright
55  *    notice, this list of conditions and the following disclaimer in the
56  *    documentation and/or other materials provided with the distribution.
57  * 3. All advertising materials mentioning features or use of this software
58  *    must display the following acknowledgement:
59  *	This product includes software developed by the University of
60  *	California, Berkeley and its contributors.
61  * 4. Neither the name of the University nor the names of its contributors
62  *    may be used to endorse or promote products derived from this software
63  *    without specific prior written permission.
64  *
65  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
66  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
67  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
68  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
69  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
70  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
71  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
72  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
73  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
74  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
75  * SUCH DAMAGE.
76  *
77  *	@(#)kbd.c	8.2 (Berkeley) 10/30/93
78  */
79 
80 /*
81  * Keyboard driver (/dev/wskbd*).  Translates incoming bytes to ASCII or
82  * to `wscons_events' and passes them up to the appropriate reader.
83  */
84 
85 #include <sys/cdefs.h>
86 __KERNEL_RCSID(0, "$NetBSD: wskbd.c,v 1.60 2002/01/12 16:41:02 tsutsui Exp $");
87 
88 #include "opt_ddb.h"
89 #include "opt_kgdb.h"
90 #include "opt_wsdisplay_compat.h"
91 
92 #include "wsdisplay.h"
93 #include "wskbd.h"
94 #include "wsmux.h"
95 
96 #include <sys/param.h>
97 #include <sys/conf.h>
98 #include <sys/device.h>
99 #include <sys/ioctl.h>
100 #include <sys/kernel.h>
101 #include <sys/proc.h>
102 #include <sys/syslog.h>
103 #include <sys/systm.h>
104 #include <sys/callout.h>
105 #include <sys/malloc.h>
106 #include <sys/tty.h>
107 #include <sys/signalvar.h>
108 #include <sys/errno.h>
109 #include <sys/fcntl.h>
110 #include <sys/vnode.h>
111 
112 #include <dev/wscons/wsconsio.h>
113 #include <dev/wscons/wskbdvar.h>
114 #include <dev/wscons/wsksymdef.h>
115 #include <dev/wscons/wsksymvar.h>
116 #include <dev/wscons/wseventvar.h>
117 #include <dev/wscons/wscons_callbacks.h>
118 
119 #ifdef KGDB
120 #include <sys/kgdb.h>
121 #endif
122 
123 #ifdef WSKBD_DEBUG
124 #define DPRINTF(x)	if (wskbddebug) printf x
125 int	wskbddebug = 0;
126 #else
127 #define DPRINTF(x)
128 #endif
129 
130 #include <dev/wscons/wsmuxvar.h>
131 
132 struct wskbd_internal {
133 	const struct wskbd_mapdata *t_keymap;
134 
135 	const struct wskbd_consops *t_consops;
136 	void	*t_consaccesscookie;
137 
138 	int	t_modifiers;
139 	int	t_composelen;		/* remaining entries in t_composebuf */
140 	keysym_t t_composebuf[2];
141 
142 	int t_flags;
143 #define WSKFL_METAESC 1
144 
145 #define MAXKEYSYMSPERKEY 2 /* ESC <key> at max */
146 	keysym_t t_symbols[MAXKEYSYMSPERKEY];
147 
148 	struct wskbd_softc *t_sc;	/* back pointer */
149 };
150 
151 struct wskbd_softc {
152 	struct wsevsrc sc_base;
153 
154 	struct wskbd_internal *id;
155 
156 	const struct wskbd_accessops *sc_accessops;
157 	void *sc_accesscookie;
158 
159 	int	sc_ledstate;
160 
161 	int	sc_isconsole;
162 
163 	struct wskbd_bell_data sc_bell_data;
164 	struct wskbd_keyrepeat_data sc_keyrepeat_data;
165 
166 	int	sc_repeating;		/* we've called timeout() */
167 	struct callout sc_repeat_ch;
168 
169 	int	sc_translating;		/* xlate to chars for emulation */
170 
171 	int	sc_maplen;		/* number of entries in sc_map */
172 	struct wscons_keymap *sc_map;	/* current translation map */
173 	kbd_t sc_layout; /* current layout */
174 
175 	int		sc_refcnt;
176 	u_char		sc_dying;	/* device is being detached */
177 };
178 
179 #define MOD_SHIFT_L		(1 << 0)
180 #define MOD_SHIFT_R		(1 << 1)
181 #define MOD_SHIFTLOCK		(1 << 2)
182 #define MOD_CAPSLOCK		(1 << 3)
183 #define MOD_CONTROL_L		(1 << 4)
184 #define MOD_CONTROL_R		(1 << 5)
185 #define MOD_META_L		(1 << 6)
186 #define MOD_META_R		(1 << 7)
187 #define MOD_MODESHIFT		(1 << 8)
188 #define MOD_NUMLOCK		(1 << 9)
189 #define MOD_COMPOSE		(1 << 10)
190 #define MOD_HOLDSCREEN		(1 << 11)
191 #define MOD_COMMAND		(1 << 12)
192 #define MOD_COMMAND1		(1 << 13)
193 #define MOD_COMMAND2		(1 << 14)
194 
195 #define MOD_ANYSHIFT		(MOD_SHIFT_L | MOD_SHIFT_R | MOD_SHIFTLOCK)
196 #define MOD_ANYCONTROL		(MOD_CONTROL_L | MOD_CONTROL_R)
197 #define MOD_ANYMETA		(MOD_META_L | MOD_META_R)
198 
199 #define MOD_ONESET(id, mask)	(((id)->t_modifiers & (mask)) != 0)
200 #define MOD_ALLSET(id, mask)	(((id)->t_modifiers & (mask)) == (mask))
201 
202 static int  wskbd_match(struct device *, struct cfdata *, void *);
203 static void wskbd_attach(struct device *, struct device *, void *);
204 static int  wskbd_detach(struct device *, int);
205 static int  wskbd_activate(struct device *, enum devact);
206 
207 static int  wskbd_displayioctl(struct device *, u_long, caddr_t, int,
208 			      struct proc *);
209 #if NWSDISPLAY > 0
210 static int  wskbd_set_display(struct device *, struct wsevsrc *);
211 #else
212 #define wskbd_set_display NULL
213 #endif
214 
215 static inline void update_leds(struct wskbd_internal *);
216 static inline void update_modifier(struct wskbd_internal *, u_int, int, int);
217 static int internal_command(struct wskbd_softc *, u_int *, keysym_t, keysym_t);
218 static int wskbd_translate(struct wskbd_internal *, u_int, int);
219 static int wskbd_enable(struct wskbd_softc *, int);
220 #if NWSDISPLAY > 0
221 static void change_displayparam(struct wskbd_softc *, int, int, int);
222 static void wskbd_holdscreen(struct wskbd_softc *, int);
223 #endif
224 
225 static int wskbd_do_ioctl_sc(struct wskbd_softc *, u_long, caddr_t, int,
226 			     struct proc *);
227 
228 #if NWSMUX > 0
229 static int wskbd_mux_open(struct wsevsrc *, struct wseventvar *);
230 static int wskbd_mux_close(struct wsevsrc *);
231 #else
232 #define wskbd_mux_open NULL
233 #define wskbd_mux_close NULL
234 #endif
235 
236 static int wskbd_do_open(struct wskbd_softc *, struct wseventvar *);
237 static int wskbd_do_ioctl(struct device *, u_long, caddr_t, int, struct proc *);
238 
239 struct cfattach wskbd_ca = {
240 	sizeof (struct wskbd_softc), wskbd_match, wskbd_attach,
241 	wskbd_detach, wskbd_activate
242 };
243 
244 extern struct cfdriver wskbd_cd;
245 
246 #ifndef WSKBD_DEFAULT_BELL_PITCH
247 #define	WSKBD_DEFAULT_BELL_PITCH	1500	/* 1500Hz */
248 #endif
249 #ifndef WSKBD_DEFAULT_BELL_PERIOD
250 #define	WSKBD_DEFAULT_BELL_PERIOD	100	/* 100ms */
251 #endif
252 #ifndef WSKBD_DEFAULT_BELL_VOLUME
253 #define	WSKBD_DEFAULT_BELL_VOLUME	50	/* 50% volume */
254 #endif
255 
256 struct wskbd_bell_data wskbd_default_bell_data = {
257 	WSKBD_BELL_DOALL,
258 	WSKBD_DEFAULT_BELL_PITCH,
259 	WSKBD_DEFAULT_BELL_PERIOD,
260 	WSKBD_DEFAULT_BELL_VOLUME,
261 };
262 
263 #ifndef WSKBD_DEFAULT_KEYREPEAT_DEL1
264 #define	WSKBD_DEFAULT_KEYREPEAT_DEL1	400	/* 400ms to start repeating */
265 #endif
266 #ifndef WSKBD_DEFAULT_KEYREPEAT_DELN
267 #define	WSKBD_DEFAULT_KEYREPEAT_DELN	100	/* 100ms to between repeats */
268 #endif
269 
270 struct wskbd_keyrepeat_data wskbd_default_keyrepeat_data = {
271 	WSKBD_KEYREPEAT_DOALL,
272 	WSKBD_DEFAULT_KEYREPEAT_DEL1,
273 	WSKBD_DEFAULT_KEYREPEAT_DELN,
274 };
275 
276 cdev_decl(wskbd);
277 
278 #if NWSDISPLAY > 0 || NWSMUX > 0
279 struct wssrcops wskbd_srcops = {
280 	WSMUX_KBD,
281 	wskbd_mux_open, wskbd_mux_close, wskbd_do_ioctl,
282 	wskbd_displayioctl, wskbd_set_display
283 };
284 #endif
285 
286 #if NWSDISPLAY > 0
287 static void wskbd_repeat(void *v);
288 #endif
289 
290 static int wskbd_console_initted;
291 static struct wskbd_softc *wskbd_console_device;
292 static struct wskbd_internal wskbd_console_data;
293 
294 static void wskbd_update_layout(struct wskbd_internal *, kbd_t);
295 
296 static void
297 wskbd_update_layout(struct wskbd_internal *id, kbd_t enc)
298 {
299 
300 	if (enc & KB_METAESC)
301 		id->t_flags |= WSKFL_METAESC;
302 	else
303 		id->t_flags &= ~WSKFL_METAESC;
304 }
305 
306 /*
307  * Print function (for parent devices).
308  */
309 int
310 wskbddevprint(void *aux, const char *pnp)
311 {
312 #if 0
313 	struct wskbddev_attach_args *ap = aux;
314 #endif
315 
316 	if (pnp)
317 		printf("wskbd at %s", pnp);
318 #if 0
319 	printf(" console %d", ap->console);
320 #endif
321 
322 	return (UNCONF);
323 }
324 
325 int
326 wskbd_match(struct device *parent, struct cfdata *match, void *aux)
327 {
328 	struct wskbddev_attach_args *ap = aux;
329 
330 	if (match->wskbddevcf_console != WSKBDDEVCF_CONSOLE_UNK) {
331 		/*
332 		 * If console-ness of device specified, either match
333 		 * exactly (at high priority), or fail.
334 		 */
335 		if (match->wskbddevcf_console != 0 && ap->console != 0)
336 			return (10);
337 		else
338 			return (0);
339 	}
340 
341 	/* If console-ness unspecified, it wins. */
342 	return (1);
343 }
344 
345 void
346 wskbd_attach(struct device *parent, struct device *self, void *aux)
347 {
348 	struct wskbd_softc *sc = (struct wskbd_softc *)self;
349 	struct wskbddev_attach_args *ap = aux;
350 #if NWSMUX > 0
351 	int mux, error;
352 #endif
353 
354 	sc->sc_isconsole = ap->console;
355 
356 #if NWSMUX > 0 || NWSDISPLAY > 0
357 	sc->sc_base.me_ops = &wskbd_srcops;
358 #endif
359 #if NWSMUX > 0
360 	mux = sc->sc_base.me_dv.dv_cfdata->wskbddevcf_mux;
361 	if (ap->console) {
362 		/* Ignore mux for console; it always goes to the console mux. */
363 		/* printf(" (mux %d ignored for console)", mux); */
364 		mux = -1;
365 	}
366 	if (mux >= 0)
367 		printf(" mux %d", mux);
368 #else
369 	if (sc->sc_base.me_dv.dv_cfdata->wskbddevcf_mux >= 0)
370 		printf(" (mux ignored)");
371 #endif
372 
373 	if (ap->console) {
374 		sc->id = &wskbd_console_data;
375 	} else {
376 		sc->id = malloc(sizeof(struct wskbd_internal),
377 				M_DEVBUF, M_WAITOK|M_ZERO);
378 		sc->id->t_keymap = ap->keymap;
379 		wskbd_update_layout(sc->id, ap->keymap->layout);
380 	}
381 
382 	callout_init(&sc->sc_repeat_ch);
383 
384 	sc->id->t_sc = sc;
385 
386 	sc->sc_accessops = ap->accessops;
387 	sc->sc_accesscookie = ap->accesscookie;
388 	sc->sc_repeating = 0;
389 	sc->sc_translating = 1;
390 	sc->sc_ledstate = -1; /* force update */
391 
392 	if (wskbd_load_keymap(sc->id->t_keymap,
393 			      &sc->sc_map, &sc->sc_maplen) != 0)
394 		panic("cannot load keymap");
395 
396 	sc->sc_layout = sc->id->t_keymap->layout;
397 
398 	/* set default bell and key repeat data */
399 	sc->sc_bell_data = wskbd_default_bell_data;
400 	sc->sc_keyrepeat_data = wskbd_default_keyrepeat_data;
401 
402 	if (ap->console) {
403 		KASSERT(wskbd_console_initted);
404 		KASSERT(wskbd_console_device == NULL);
405 
406 		wskbd_console_device = sc;
407 
408 		printf(": console keyboard");
409 
410 #if NWSDISPLAY > 0
411 		wsdisplay_set_console_kbd(&sc->sc_base); /* sets me_dispv */
412 		if (sc->sc_base.me_dispdv != NULL)
413 			printf(", using %s", sc->sc_base.me_dispdv->dv_xname);
414 #endif
415 	}
416 	printf("\n");
417 
418 #if NWSMUX > 0
419 	if (mux >= 0) {
420 		error = wsmux_attach_sc(wsmux_getmux(mux), &sc->sc_base);
421 		if (error)
422 			printf("%s: attach error=%d\n",
423 			    sc->sc_base.me_dv.dv_xname, error);
424 	}
425 #endif
426 }
427 
428 void
429 wskbd_cnattach(const struct wskbd_consops *consops, void *conscookie,
430 	const struct wskbd_mapdata *mapdata)
431 {
432 	KASSERT(!wskbd_console_initted);
433 
434 	wskbd_console_data.t_keymap = mapdata;
435 	wskbd_update_layout(&wskbd_console_data, mapdata->layout);
436 
437 	wskbd_console_data.t_consops = consops;
438 	wskbd_console_data.t_consaccesscookie = conscookie;
439 
440 #if NWSDISPLAY > 0
441 	wsdisplay_set_cons_kbd(wskbd_cngetc, wskbd_cnpollc, wskbd_cnbell);
442 #endif
443 
444 	wskbd_console_initted = 1;
445 }
446 
447 void
448 wskbd_cndetach(void)
449 {
450 	KASSERT(wskbd_console_initted);
451 
452 	wskbd_console_data.t_keymap = 0;
453 
454 	wskbd_console_data.t_consops = 0;
455 	wskbd_console_data.t_consaccesscookie = 0;
456 
457 #if NWSDISPLAY > 0
458 	wsdisplay_unset_cons_kbd();
459 #endif
460 
461 	wskbd_console_initted = 0;
462 }
463 
464 #if NWSDISPLAY > 0
465 static void
466 wskbd_repeat(void *v)
467 {
468 	struct wskbd_softc *sc = (struct wskbd_softc *)v;
469 	int s = spltty();
470 
471 	if (!sc->sc_repeating) {
472 		/*
473 		 * race condition: a "key up" event came in when wskbd_repeat()
474 		 * was already called but not yet spltty()'d
475 		 */
476 		splx(s);
477 		return;
478 	}
479 	if (sc->sc_base.me_dispdv != NULL) {
480 		int i;
481 		for (i = 0; i < sc->sc_repeating; i++)
482 			wsdisplay_kbdinput(sc->sc_base.me_dispdv,
483 					   sc->id->t_symbols[i]);
484 	}
485 	callout_reset(&sc->sc_repeat_ch,
486 	    (hz * sc->sc_keyrepeat_data.delN) / 1000, wskbd_repeat, sc);
487 	splx(s);
488 }
489 #endif
490 
491 int
492 wskbd_activate(struct device *self, enum devact act)
493 {
494 	struct wskbd_softc *sc = (struct wskbd_softc *)self;
495 
496 	if (act == DVACT_DEACTIVATE)
497 		sc->sc_dying = 1;
498 	return (0);
499 }
500 
501 /*
502  * Detach a keyboard.  To keep track of users of the softc we keep
503  * a reference count that's incremented while inside, e.g., read.
504  * If the keyboard is active and the reference count is > 0 (0 is the
505  * normal state) we post an event and then wait for the process
506  * that had the reference to wake us up again.  Then we blow away the
507  * vnode and return (which will deallocate the softc).
508  */
509 int
510 wskbd_detach(struct device  *self, int flags)
511 {
512 	struct wskbd_softc *sc = (struct wskbd_softc *)self;
513 	struct wseventvar *evar;
514 	int maj, mn;
515 	int s;
516 
517 #if NWSMUX > 0
518 	/* Tell parent mux we're leaving. */
519 	if (sc->sc_base.me_parent != NULL)
520 		wsmux_detach_sc(&sc->sc_base);
521 #endif
522 
523 	if (sc->sc_isconsole) {
524 		KASSERT(wskbd_console_device == sc);
525 		wskbd_console_device = NULL;
526 	}
527 
528 	evar = sc->sc_base.me_evp;
529 	if (evar != NULL && evar->io != NULL) {
530 		s = spltty();
531 		if (--sc->sc_refcnt >= 0) {
532 			/* Wake everyone by generating a dummy event. */
533 			if (++evar->put >= WSEVENT_QSIZE)
534 				evar->put = 0;
535 			WSEVENT_WAKEUP(evar);
536 			/* Wait for processes to go away. */
537 			if (tsleep(sc, PZERO, "wskdet", hz * 60))
538 				printf("wskbd_detach: %s didn't detach\n",
539 				       sc->sc_base.me_dv.dv_xname);
540 		}
541 		splx(s);
542 	}
543 
544 	/* locate the major number */
545 	for (maj = 0; maj < nchrdev; maj++)
546 		if (cdevsw[maj].d_open == wskbdopen)
547 			break;
548 
549 	/* Nuke the vnodes for any open instances. */
550 	mn = self->dv_unit;
551 	vdevgone(maj, mn, mn, VCHR);
552 
553 	return (0);
554 }
555 
556 void
557 wskbd_input(struct device *dev, u_int type, int value)
558 {
559 	struct wskbd_softc *sc = (struct wskbd_softc *)dev;
560 	struct wscons_event *ev;
561 	struct wseventvar *evar;
562 	struct timeval thistime;
563 #if NWSDISPLAY > 0
564 	int num, i;
565 #endif
566 	int put;
567 
568 #if NWSDISPLAY > 0
569 	if (sc->sc_repeating) {
570 		sc->sc_repeating = 0;
571 		callout_stop(&sc->sc_repeat_ch);
572 	}
573 
574 	/*
575 	 * If /dev/wskbdN is not connected in event mode translate and
576 	 * send upstream.
577 	 */
578 	if (sc->sc_translating) {
579 		num = wskbd_translate(sc->id, type, value);
580 		if (num > 0) {
581 			if (sc->sc_base.me_dispdv != NULL) {
582 				for (i = 0; i < num; i++)
583 					wsdisplay_kbdinput(
584 						sc->sc_base.me_dispdv,
585 						sc->id->t_symbols[i]);
586 			}
587 
588 			sc->sc_repeating = num;
589 			callout_reset(&sc->sc_repeat_ch,
590 			    (hz * sc->sc_keyrepeat_data.del1) / 1000,
591 			    wskbd_repeat, sc);
592 		}
593 		return;
594 	}
595 #endif
596 
597 	/*
598 	 * Keyboard is generating events.  Turn this keystroke into an
599 	 * event and put it in the queue.  If the queue is full, the
600 	 * keystroke is lost (sorry!).
601 	 */
602 
603 	evar = sc->sc_base.me_evp;
604 	if (evar == NULL) {
605 		DPRINTF(("wskbd_input: not open\n"));
606 		return;
607 	}
608 
609 #ifdef DIAGNOSTIC
610 	if (evar->q == NULL) {
611 		printf("wskbd_input: evar->q=NULL\n");
612 		return;
613 	}
614 #endif
615 
616 	put = evar->put;
617 	ev = &evar->q[put];
618 	put = (put + 1) % WSEVENT_QSIZE;
619 	if (put == evar->get) {
620 		log(LOG_WARNING, "%s: event queue overflow\n",
621 		    sc->sc_base.me_dv.dv_xname);
622 		return;
623 	}
624 	ev->type = type;
625 	ev->value = value;
626 	microtime(&thistime);
627 	TIMEVAL_TO_TIMESPEC(&thistime, &ev->time);
628 	evar->put = put;
629 	WSEVENT_WAKEUP(evar);
630 }
631 
632 #ifdef WSDISPLAY_COMPAT_RAWKBD
633 void
634 wskbd_rawinput(struct device *dev, u_char *buf, int len)
635 {
636 #if NWSDISPLAY > 0
637 	struct wskbd_softc *sc = (struct wskbd_softc *)dev;
638 	int i;
639 
640 	if (sc->sc_base.me_dispdv != NULL)
641 		for (i = 0; i < len; i++)
642 			wsdisplay_kbdinput(sc->sc_base.me_dispdv, buf[i]);
643 	/* this is KS_GROUP_Ascii */
644 #endif
645 }
646 #endif /* WSDISPLAY_COMPAT_RAWKBD */
647 
648 #if NWSDISPLAY > 0
649 static void
650 wskbd_holdscreen(struct wskbd_softc *sc, int hold)
651 {
652 	int new_state;
653 
654 	if (sc->sc_base.me_dispdv != NULL) {
655 		wsdisplay_kbdholdscreen(sc->sc_base.me_dispdv, hold);
656 		new_state = sc->sc_ledstate;
657 		if (hold)
658 			new_state |= WSKBD_LED_SCROLL;
659 		else
660 			new_state &= ~WSKBD_LED_SCROLL;
661 		if (new_state != sc->sc_ledstate) {
662 			(*sc->sc_accessops->set_leds)(sc->sc_accesscookie,
663 						      new_state);
664 			sc->sc_ledstate = new_state;
665 		}
666 	}
667 }
668 #endif
669 
670 static int
671 wskbd_enable(struct wskbd_softc *sc, int on)
672 {
673 	int error;
674 
675 #if 0
676 /* I don't understand the purpose of this code.  And it seems to
677  * break things, so it's out.  -- Lennart
678  */
679 	if (!on && (!sc->sc_translating
680 #if NWSDISPLAY > 0
681 		    || sc->sc_base.me_dispdv
682 #endif
683 		))
684 		return (EBUSY);
685 #endif
686 #if NWSDISPLAY > 0
687 	if (sc->sc_base.me_dispdv != NULL)
688 		return (0);
689 #endif
690 
691 	error = (*sc->sc_accessops->enable)(sc->sc_accesscookie, on);
692 	DPRINTF(("wskbd_enable: sc=%p on=%d res=%d\n", sc, on, error));
693 	return (error);
694 }
695 
696 #if NWSMUX > 0
697 int
698 wskbd_mux_open(struct wsevsrc *me, struct wseventvar *evp)
699 {
700 	struct wskbd_softc *sc = (struct wskbd_softc *)me;
701 
702 	if (sc->sc_dying)
703 		return (EIO);
704 
705 	if (sc->sc_base.me_evp != NULL)
706 		return (EBUSY);
707 
708 	return (wskbd_do_open(sc, evp));
709 }
710 #endif
711 
712 int
713 wskbdopen(dev_t dev, int flags, int mode, struct proc *p)
714 {
715 	struct wskbd_softc *sc;
716 	struct wseventvar *evar;
717 	int unit, error;
718 
719 	unit = minor(dev);
720 	if (unit >= wskbd_cd.cd_ndevs ||	/* make sure it was attached */
721 	    (sc = wskbd_cd.cd_devs[unit]) == NULL)
722 		return (ENXIO);
723 
724 #if NWSMUX > 0
725 	DPRINTF(("wskbdopen: %s mux=%p p=%p\n", sc->sc_base.me_dv.dv_xname,
726 		 sc->sc_base.me_parent, p));
727 #endif
728 
729 	if (sc->sc_dying)
730 		return (EIO);
731 
732 	if ((flags & (FREAD | FWRITE)) == FWRITE)
733 		/* Not opening for read, only ioctl is available. */
734 		return (0);
735 
736 #if NWSMUX > 0
737 	if (sc->sc_base.me_parent != NULL) {
738 		/* Grab the keyboard out of the greedy hands of the mux. */
739 		DPRINTF(("wskbdopen: detach\n"));
740 		wsmux_detach_sc(&sc->sc_base);
741 	}
742 #endif
743 
744 	if (sc->sc_base.me_evp != NULL)
745 		return (EBUSY);
746 
747 	evar = &sc->sc_base.me_evar;
748 	wsevent_init(evar);
749 	evar->io = p;
750 
751 	error = wskbd_do_open(sc, evar);
752 	if (error) {
753 		DPRINTF(("wskbdopen: %s open failed\n",
754 			 sc->sc_base.me_dv.dv_xname));
755 		sc->sc_base.me_evp = NULL;
756 		wsevent_fini(evar);
757 	}
758 	return (error);
759 }
760 
761 int
762 wskbd_do_open(struct wskbd_softc *sc, struct wseventvar *evp)
763 {
764 	sc->sc_base.me_evp = evp;
765 	sc->sc_translating = 0;
766 
767 	return (wskbd_enable(sc, 1));
768 }
769 
770 int
771 wskbdclose(dev_t dev, int flags, int mode, struct proc *p)
772 {
773 	struct wskbd_softc *sc =
774 	    (struct wskbd_softc *)wskbd_cd.cd_devs[minor(dev)];
775 	struct wseventvar *evar = sc->sc_base.me_evp;
776 
777 	if (evar == NULL)
778 		/* not open for read */
779 		return (0);
780 
781 	sc->sc_base.me_evp = NULL;
782 	sc->sc_translating = 1;
783 	(void)wskbd_enable(sc, 0);
784 	wsevent_fini(evar);
785 
786 	return (0);
787 }
788 
789 #if NWSMUX > 0
790 int
791 wskbd_mux_close(struct wsevsrc *me)
792 {
793 	struct wskbd_softc *sc = (struct wskbd_softc *)me;
794 
795 	sc->sc_base.me_evp = NULL;
796 	sc->sc_translating = 1;
797 	(void)wskbd_enable(sc, 0);
798 
799 	return (0);
800 }
801 #endif
802 
803 int
804 wskbdread(dev_t dev, struct uio *uio, int flags)
805 {
806 	struct wskbd_softc *sc = wskbd_cd.cd_devs[minor(dev)];
807 	int error;
808 
809 	if (sc->sc_dying)
810 		return (EIO);
811 
812 #ifdef DIAGNOSTIC
813 	if (sc->sc_base.me_evp == NULL) {
814 		printf("wskbdread: evp == NULL\n");
815 		return (EINVAL);
816 	}
817 #endif
818 
819 	sc->sc_refcnt++;
820 	error = wsevent_read(sc->sc_base.me_evp, uio, flags);
821 	if (--sc->sc_refcnt < 0) {
822 		wakeup(sc);
823 		error = EIO;
824 	}
825 	return (error);
826 }
827 
828 int
829 wskbdioctl(dev_t dev, u_long cmd, caddr_t data, int flag, struct proc *p)
830 {
831 	return (wskbd_do_ioctl(wskbd_cd.cd_devs[minor(dev)], cmd, data, flag,p));
832 }
833 
834 /* A wrapper around the ioctl() workhorse to make reference counting easy. */
835 int
836 wskbd_do_ioctl(struct device *dv, u_long cmd, caddr_t data, int flag,
837 	struct proc *p)
838 {
839 	struct wskbd_softc *sc = (struct wskbd_softc *)dv;
840 	int error;
841 
842 	sc->sc_refcnt++;
843 	error = wskbd_do_ioctl_sc(sc, cmd, data, flag, p);
844 	if (--sc->sc_refcnt < 0)
845 		wakeup(sc);
846 	return (error);
847 }
848 
849 int
850 wskbd_do_ioctl_sc(struct wskbd_softc *sc, u_long cmd, caddr_t data, int flag,
851 		  struct proc *p)
852 {
853 	int error;
854 
855 	/*
856 	 * Try the generic ioctls that the wskbd interface supports.
857 	 */
858 	switch (cmd) {
859 	case FIONBIO:		/* we will remove this someday (soon???) */
860 		return (0);
861 
862 	case FIOASYNC:
863 		if (sc->sc_base.me_evp == NULL)
864 			return (EINVAL);
865 		sc->sc_base.me_evp->async = *(int *)data != 0;
866 		return (0);
867 
868 	case TIOCSPGRP:
869 		if (sc->sc_base.me_evp == NULL)
870 			return (EINVAL);
871 		if (*(int *)data != sc->sc_base.me_evp->io->p_pgid)
872 			return (EPERM);
873 		return (0);
874 	}
875 
876 	/*
877 	 * Try the keyboard driver for WSKBDIO ioctls.  It returns -1
878 	 * if it didn't recognize the request.
879 	 */
880 	error = wskbd_displayioctl(&sc->sc_base.me_dv, cmd, data, flag, p);
881 	return (error != -1 ? error : ENOTTY);
882 }
883 
884 /*
885  * WSKBDIO ioctls, handled in both emulation mode and in ``raw'' mode.
886  * Some of these have no real effect in raw mode, however.
887  */
888 static int
889 wskbd_displayioctl(struct device *dev, u_long cmd, caddr_t data, int flag,
890 	struct proc *p)
891 {
892 	struct wskbd_softc *sc = (struct wskbd_softc *)dev;
893 	struct wskbd_bell_data *ubdp, *kbdp;
894 	struct wskbd_keyrepeat_data *ukdp, *kkdp;
895 	struct wskbd_map_data *umdp;
896 	struct wskbd_mapdata md;
897 	kbd_t enc;
898 	void *buf;
899 	int len, error;
900 
901 	switch (cmd) {
902 #define	SETBELL(dstp, srcp, dfltp)					\
903     do {								\
904 	(dstp)->pitch = ((srcp)->which & WSKBD_BELL_DOPITCH) ?		\
905 	    (srcp)->pitch : (dfltp)->pitch;				\
906 	(dstp)->period = ((srcp)->which & WSKBD_BELL_DOPERIOD) ?	\
907 	    (srcp)->period : (dfltp)->period;				\
908 	(dstp)->volume = ((srcp)->which & WSKBD_BELL_DOVOLUME) ?	\
909 	    (srcp)->volume : (dfltp)->volume;				\
910 	(dstp)->which = WSKBD_BELL_DOALL;				\
911     } while (0)
912 
913 	case WSKBDIO_BELL:
914 		if ((flag & FWRITE) == 0)
915 			return (EACCES);
916 		return ((*sc->sc_accessops->ioctl)(sc->sc_accesscookie,
917 		    WSKBDIO_COMPLEXBELL, (caddr_t)&sc->sc_bell_data, flag, p));
918 
919 	case WSKBDIO_COMPLEXBELL:
920 		if ((flag & FWRITE) == 0)
921 			return (EACCES);
922 		ubdp = (struct wskbd_bell_data *)data;
923 		SETBELL(ubdp, ubdp, &sc->sc_bell_data);
924 		return ((*sc->sc_accessops->ioctl)(sc->sc_accesscookie,
925 		    WSKBDIO_COMPLEXBELL, (caddr_t)ubdp, flag, p));
926 
927 	case WSKBDIO_SETBELL:
928 		if ((flag & FWRITE) == 0)
929 			return (EACCES);
930 		kbdp = &sc->sc_bell_data;
931 setbell:
932 		ubdp = (struct wskbd_bell_data *)data;
933 		SETBELL(kbdp, ubdp, kbdp);
934 		return (0);
935 
936 	case WSKBDIO_GETBELL:
937 		kbdp = &sc->sc_bell_data;
938 getbell:
939 		ubdp = (struct wskbd_bell_data *)data;
940 		SETBELL(ubdp, kbdp, kbdp);
941 		return (0);
942 
943 	case WSKBDIO_SETDEFAULTBELL:
944 		if ((error = suser(p->p_ucred, &p->p_acflag)) != 0)
945 			return (error);
946 		kbdp = &wskbd_default_bell_data;
947 		goto setbell;
948 
949 
950 	case WSKBDIO_GETDEFAULTBELL:
951 		kbdp = &wskbd_default_bell_data;
952 		goto getbell;
953 
954 #undef SETBELL
955 
956 #define	SETKEYREPEAT(dstp, srcp, dfltp)					\
957     do {								\
958 	(dstp)->del1 = ((srcp)->which & WSKBD_KEYREPEAT_DODEL1) ?	\
959 	    (srcp)->del1 : (dfltp)->del1;				\
960 	(dstp)->delN = ((srcp)->which & WSKBD_KEYREPEAT_DODELN) ?	\
961 	    (srcp)->delN : (dfltp)->delN;				\
962 	(dstp)->which = WSKBD_KEYREPEAT_DOALL;				\
963     } while (0)
964 
965 	case WSKBDIO_SETKEYREPEAT:
966 		if ((flag & FWRITE) == 0)
967 			return (EACCES);
968 		kkdp = &sc->sc_keyrepeat_data;
969 setkeyrepeat:
970 		ukdp = (struct wskbd_keyrepeat_data *)data;
971 		SETKEYREPEAT(kkdp, ukdp, kkdp);
972 		return (0);
973 
974 	case WSKBDIO_GETKEYREPEAT:
975 		kkdp = &sc->sc_keyrepeat_data;
976 getkeyrepeat:
977 		ukdp = (struct wskbd_keyrepeat_data *)data;
978 		SETKEYREPEAT(ukdp, kkdp, kkdp);
979 		return (0);
980 
981 	case WSKBDIO_SETDEFAULTKEYREPEAT:
982 		if ((error = suser(p->p_ucred, &p->p_acflag)) != 0)
983 			return (error);
984 		kkdp = &wskbd_default_keyrepeat_data;
985 		goto setkeyrepeat;
986 
987 
988 	case WSKBDIO_GETDEFAULTKEYREPEAT:
989 		kkdp = &wskbd_default_keyrepeat_data;
990 		goto getkeyrepeat;
991 
992 #undef SETKEYREPEAT
993 
994 	case WSKBDIO_SETMAP:
995 		if ((flag & FWRITE) == 0)
996 			return (EACCES);
997 		umdp = (struct wskbd_map_data *)data;
998 		if (umdp->maplen > WSKBDIO_MAXMAPLEN)
999 			return (EINVAL);
1000 
1001 		len = umdp->maplen*sizeof(struct wscons_keymap);
1002 		buf = malloc(len, M_TEMP, M_WAITOK);
1003 		error = copyin(umdp->map, buf, len);
1004 		if (error == 0) {
1005 			wskbd_init_keymap(umdp->maplen,
1006 					  &sc->sc_map, &sc->sc_maplen);
1007 			memcpy(sc->sc_map, buf, len);
1008 			/* drop the variant bits handled by the map */
1009 			sc->sc_layout = KB_USER |
1010 			      (KB_VARIANT(sc->sc_layout) & KB_HANDLEDBYWSKBD);
1011 			wskbd_update_layout(sc->id, sc->sc_layout);
1012 		}
1013 		free(buf, M_TEMP);
1014 		return(error);
1015 
1016 	case WSKBDIO_GETMAP:
1017 		umdp = (struct wskbd_map_data *)data;
1018 		if (umdp->maplen > sc->sc_maplen)
1019 			umdp->maplen = sc->sc_maplen;
1020 		error = copyout(sc->sc_map, umdp->map,
1021 				umdp->maplen*sizeof(struct wscons_keymap));
1022 		return(error);
1023 
1024 	case WSKBDIO_GETENCODING:
1025 		*((kbd_t *) data) = sc->sc_layout;
1026 		return(0);
1027 
1028 	case WSKBDIO_SETENCODING:
1029 		if ((flag & FWRITE) == 0)
1030 			return (EACCES);
1031 		enc = *((kbd_t *)data);
1032 		if (KB_ENCODING(enc) == KB_USER) {
1033 			/* user map must already be loaded */
1034 			if (KB_ENCODING(sc->sc_layout) != KB_USER)
1035 				return (EINVAL);
1036 			/* map variants make no sense */
1037 			if (KB_VARIANT(enc) & ~KB_HANDLEDBYWSKBD)
1038 				return (EINVAL);
1039 		} else {
1040 			md = *(sc->id->t_keymap); /* structure assignment */
1041 			md.layout = enc;
1042 			error = wskbd_load_keymap(&md, &sc->sc_map,
1043 						  &sc->sc_maplen);
1044 			if (error)
1045 				return (error);
1046 		}
1047 		sc->sc_layout = enc;
1048 		wskbd_update_layout(sc->id, enc);
1049 		return (0);
1050 	}
1051 
1052 	/*
1053 	 * Try the keyboard driver for WSKBDIO ioctls.  It returns -1
1054 	 * if it didn't recognize the request, and in turn we return
1055 	 * -1 if we didn't recognize the request.
1056 	 */
1057 /* printf("kbdaccess\n"); */
1058 	error = (*sc->sc_accessops->ioctl)(sc->sc_accesscookie, cmd, data,
1059 					   flag, p);
1060 #ifdef WSDISPLAY_COMPAT_RAWKBD
1061 	if (!error && cmd == WSKBDIO_SETMODE && *(int *)data == WSKBD_RAW) {
1062 		int s = spltty();
1063 		sc->id->t_modifiers &= ~(MOD_SHIFT_L | MOD_SHIFT_R
1064 					 | MOD_CONTROL_L | MOD_CONTROL_R
1065 					 | MOD_META_L | MOD_META_R
1066 					 | MOD_COMMAND
1067 					 | MOD_COMMAND1 | MOD_COMMAND2);
1068 #if NWSDISPLAY > 0
1069 		if (sc->sc_repeating) {
1070 			sc->sc_repeating = 0;
1071 			callout_stop(&sc->sc_repeat_ch);
1072 		}
1073 #endif
1074 		splx(s);
1075 	}
1076 #endif
1077 	return (error);
1078 }
1079 
1080 int
1081 wskbdpoll(dev_t dev, int events, struct proc *p)
1082 {
1083 	struct wskbd_softc *sc = wskbd_cd.cd_devs[minor(dev)];
1084 
1085 	if (sc->sc_base.me_evp == NULL)
1086 		return (EINVAL);
1087 	return (wsevent_poll(sc->sc_base.me_evp, events, p));
1088 }
1089 
1090 #if NWSDISPLAY > 0
1091 
1092 int
1093 wskbd_pickfree(void)
1094 {
1095 	int i;
1096 	struct wskbd_softc *sc;
1097 
1098 	for (i = 0; i < wskbd_cd.cd_ndevs; i++) {
1099 		if ((sc = wskbd_cd.cd_devs[i]) == NULL)
1100 			continue;
1101 		if (sc->sc_base.me_dispdv == NULL)
1102 			return (i);
1103 	}
1104 	return (-1);
1105 }
1106 
1107 struct wsevsrc *
1108 wskbd_set_console_display(struct device *displaydv, struct wsevsrc *me)
1109 {
1110 	struct wskbd_softc *sc = wskbd_console_device;
1111 
1112 	if (sc == NULL)
1113 		return (NULL);
1114 	sc->sc_base.me_dispdv = displaydv;
1115 #if NWSMUX > 0
1116 	(void)wsmux_attach_sc((struct wsmux_softc *)me, &sc->sc_base);
1117 #endif
1118 	return (&sc->sc_base);
1119 }
1120 
1121 int
1122 wskbd_set_display(struct device *dv, struct wsevsrc *me)
1123 {
1124 	struct wskbd_softc *sc = (struct wskbd_softc *)dv;
1125 	struct device *displaydv = me != NULL ? me->me_dispdv : NULL;
1126 	struct device *odisplaydv;
1127 	int error;
1128 
1129 	DPRINTF(("wskbd_set_display: %s me=%p odisp=%p disp=%p cons=%d\n",
1130 		 dv->dv_xname, me, sc->sc_base.me_dispdv, displaydv,
1131 		 sc->sc_isconsole));
1132 
1133 	if (sc->sc_isconsole)
1134 		return (EBUSY);
1135 
1136 	if (displaydv != NULL) {
1137 		if (sc->sc_base.me_dispdv != NULL)
1138 			return (EBUSY);
1139 	} else {
1140 		if (sc->sc_base.me_dispdv == NULL)
1141 			return (ENXIO);
1142 	}
1143 
1144 	odisplaydv = sc->sc_base.me_dispdv;
1145 	sc->sc_base.me_dispdv = NULL;
1146 	error = wskbd_enable(sc, displaydv != NULL);
1147 	sc->sc_base.me_dispdv = displaydv;
1148 	if (error) {
1149 		sc->sc_base.me_dispdv = odisplaydv;
1150 		return (error);
1151 	}
1152 
1153 	if (displaydv)
1154 		printf("%s: connecting to %s\n",
1155 		       sc->sc_base.me_dv.dv_xname, displaydv->dv_xname);
1156 	else
1157 		printf("%s: disconnecting from %s\n",
1158 		       sc->sc_base.me_dv.dv_xname, odisplaydv->dv_xname);
1159 
1160 	return (0);
1161 }
1162 
1163 #endif /* NWSDISPLAY > 0 */
1164 
1165 #if NWSMUX > 0
1166 int
1167 wskbd_add_mux(int unit, struct wsmux_softc *muxsc)
1168 {
1169 	struct wskbd_softc *sc;
1170 
1171 	if (unit < 0 || unit >= wskbd_cd.cd_ndevs ||
1172 	    (sc = wskbd_cd.cd_devs[unit]) == NULL)
1173 		return (ENXIO);
1174 
1175 	if (sc->sc_base.me_parent != NULL || sc->sc_base.me_evp != NULL)
1176 		return (EBUSY);
1177 
1178 	return (wsmux_attach_sc(muxsc, &sc->sc_base));
1179 }
1180 #endif
1181 
1182 /*
1183  * Console interface.
1184  */
1185 int
1186 wskbd_cngetc(dev_t dev)
1187 {
1188 	static int num = 0;
1189 	static int pos;
1190 	u_int type;
1191 	int data;
1192 	keysym_t ks;
1193 
1194 	if (!wskbd_console_initted)
1195 		return 0;
1196 
1197 	if (wskbd_console_device != NULL &&
1198 	    !wskbd_console_device->sc_translating)
1199 		return 0;
1200 
1201 	for(;;) {
1202 		if (num-- > 0) {
1203 			ks = wskbd_console_data.t_symbols[pos++];
1204 			if (KS_GROUP(ks) == KS_GROUP_Ascii)
1205 				return (KS_VALUE(ks));
1206 		} else {
1207 			(*wskbd_console_data.t_consops->getc)
1208 				(wskbd_console_data.t_consaccesscookie,
1209 				 &type, &data);
1210 			num = wskbd_translate(&wskbd_console_data, type, data);
1211 			pos = 0;
1212 		}
1213 	}
1214 }
1215 
1216 void
1217 wskbd_cnpollc(dev_t dev, int poll)
1218 {
1219 
1220 	if (!wskbd_console_initted)
1221 		return;
1222 
1223 	if (wskbd_console_device != NULL &&
1224 	    !wskbd_console_device->sc_translating)
1225 		return;
1226 
1227 	(*wskbd_console_data.t_consops->pollc)
1228 	    (wskbd_console_data.t_consaccesscookie, poll);
1229 }
1230 
1231 void
1232 wskbd_cnbell(dev_t dev, u_int pitch, u_int period, u_int volume)
1233 {
1234 
1235 	if (!wskbd_console_initted)
1236 		return;
1237 
1238 	if (wskbd_console_data.t_consops->bell != NULL)
1239 		(*wskbd_console_data.t_consops->bell)
1240 		    (wskbd_console_data.t_consaccesscookie, pitch, period,
1241 			volume);
1242 }
1243 
1244 static inline void
1245 update_leds(struct wskbd_internal *id)
1246 {
1247 	int new_state;
1248 
1249 	new_state = 0;
1250 	if (id->t_modifiers & (MOD_SHIFTLOCK | MOD_CAPSLOCK))
1251 		new_state |= WSKBD_LED_CAPS;
1252 	if (id->t_modifiers & MOD_NUMLOCK)
1253 		new_state |= WSKBD_LED_NUM;
1254 	if (id->t_modifiers & MOD_COMPOSE)
1255 		new_state |= WSKBD_LED_COMPOSE;
1256 	if (id->t_modifiers & MOD_HOLDSCREEN)
1257 		new_state |= WSKBD_LED_SCROLL;
1258 
1259 	if (id->t_sc && new_state != id->t_sc->sc_ledstate) {
1260 		(*id->t_sc->sc_accessops->set_leds)
1261 		    (id->t_sc->sc_accesscookie, new_state);
1262 		id->t_sc->sc_ledstate = new_state;
1263 	}
1264 }
1265 
1266 static inline void
1267 update_modifier(struct wskbd_internal *id, u_int type, int toggle, int mask)
1268 {
1269 	if (toggle) {
1270 		if (type == WSCONS_EVENT_KEY_DOWN)
1271 			id->t_modifiers ^= mask;
1272 	} else {
1273 		if (type == WSCONS_EVENT_KEY_DOWN)
1274 			id->t_modifiers |= mask;
1275 		else
1276 			id->t_modifiers &= ~mask;
1277 	}
1278 }
1279 
1280 #if NWSDISPLAY > 0
1281 static void
1282 change_displayparam(struct wskbd_softc *sc, int param, int updown,
1283 	int wraparound)
1284 {
1285 	int res;
1286 	struct wsdisplay_param dp;
1287 
1288 	if (sc->sc_base.me_dispdv == NULL)
1289 		return;
1290 
1291 	dp.param = param;
1292 	res = wsdisplay_param(sc->sc_base.me_dispdv, WSDISPLAYIO_GETPARAM, &dp);
1293 
1294 	if (res == EINVAL)
1295 		return; /* no such parameter */
1296 
1297 	dp.curval += updown;
1298 	if (dp.max < dp.curval)
1299 		dp.curval = wraparound ? dp.min : dp.max;
1300 	else
1301 	if (dp.curval < dp.min)
1302 		dp.curval = wraparound ? dp.max : dp.min;
1303 	wsdisplay_param(sc->sc_base.me_dispdv, WSDISPLAYIO_SETPARAM, &dp);
1304 }
1305 #endif
1306 
1307 static int
1308 internal_command(struct wskbd_softc *sc, u_int *type, keysym_t ksym,
1309 	keysym_t ksym2)
1310 {
1311 	switch (ksym) {
1312 	case KS_Cmd:
1313 		update_modifier(sc->id, *type, 0, MOD_COMMAND);
1314 		ksym = ksym2;
1315 		break;
1316 
1317 	case KS_Cmd1:
1318 		update_modifier(sc->id, *type, 0, MOD_COMMAND1);
1319 		break;
1320 
1321 	case KS_Cmd2:
1322 		update_modifier(sc->id, *type, 0, MOD_COMMAND2);
1323 		break;
1324 	}
1325 
1326 	if (*type != WSCONS_EVENT_KEY_DOWN ||
1327 	    (! MOD_ONESET(sc->id, MOD_COMMAND) &&
1328 	     ! MOD_ALLSET(sc->id, MOD_COMMAND1 | MOD_COMMAND2)))
1329 		return (0);
1330 
1331 	switch (ksym) {
1332 #if defined(DDB) || defined(KGDB)
1333 	case KS_Cmd_Debugger:
1334 		if (sc->sc_isconsole) {
1335 #ifdef DDB
1336 			console_debugger();
1337 #endif
1338 #ifdef KGDB
1339 			kgdb_connect(1);
1340 #endif
1341 		}
1342 		/* discard this key (ddb discarded command modifiers) */
1343 		*type = WSCONS_EVENT_KEY_UP;
1344 		return (1);
1345 #endif
1346 
1347 #if NWSDISPLAY > 0
1348 	case KS_Cmd_Screen0:
1349 	case KS_Cmd_Screen1:
1350 	case KS_Cmd_Screen2:
1351 	case KS_Cmd_Screen3:
1352 	case KS_Cmd_Screen4:
1353 	case KS_Cmd_Screen5:
1354 	case KS_Cmd_Screen6:
1355 	case KS_Cmd_Screen7:
1356 	case KS_Cmd_Screen8:
1357 	case KS_Cmd_Screen9:
1358 		wsdisplay_switch(sc->sc_base.me_dispdv, ksym - KS_Cmd_Screen0, 0);
1359 		return (1);
1360 	case KS_Cmd_ResetEmul:
1361 		wsdisplay_reset(sc->sc_base.me_dispdv, WSDISPLAY_RESETEMUL);
1362 		return (1);
1363 	case KS_Cmd_ResetClose:
1364 		wsdisplay_reset(sc->sc_base.me_dispdv, WSDISPLAY_RESETCLOSE);
1365 		return (1);
1366 	case KS_Cmd_BacklightOn:
1367 	case KS_Cmd_BacklightOff:
1368 	case KS_Cmd_BacklightToggle:
1369 		change_displayparam(sc, WSDISPLAYIO_PARAM_BACKLIGHT,
1370 				    ksym == KS_Cmd_BacklightOff ? -1 : 1,
1371 				    ksym == KS_Cmd_BacklightToggle ? 1 : 0);
1372 		return (1);
1373 	case KS_Cmd_BrightnessUp:
1374 	case KS_Cmd_BrightnessDown:
1375 	case KS_Cmd_BrightnessRotate:
1376 		change_displayparam(sc, WSDISPLAYIO_PARAM_BRIGHTNESS,
1377 				    ksym == KS_Cmd_BrightnessDown ? -1 : 1,
1378 				    ksym == KS_Cmd_BrightnessRotate ? 1 : 0);
1379 		return (1);
1380 	case KS_Cmd_ContrastUp:
1381 	case KS_Cmd_ContrastDown:
1382 	case KS_Cmd_ContrastRotate:
1383 		change_displayparam(sc, WSDISPLAYIO_PARAM_CONTRAST,
1384 				    ksym == KS_Cmd_ContrastDown ? -1 : 1,
1385 				    ksym == KS_Cmd_ContrastRotate ? 1 : 0);
1386 		return (1);
1387 #endif
1388 	}
1389 	return (0);
1390 }
1391 
1392 static int
1393 wskbd_translate(struct wskbd_internal *id, u_int type, int value)
1394 {
1395 	struct wskbd_softc *sc = id->t_sc;
1396 	keysym_t ksym, res, *group;
1397 	struct wscons_keymap kpbuf, *kp;
1398 	int iscommand = 0;
1399 
1400 	if (type == WSCONS_EVENT_ALL_KEYS_UP) {
1401 		id->t_modifiers &= ~(MOD_SHIFT_L | MOD_SHIFT_R
1402 				| MOD_CONTROL_L | MOD_CONTROL_R
1403 				| MOD_META_L | MOD_META_R
1404 				| MOD_MODESHIFT
1405 				| MOD_COMMAND | MOD_COMMAND1 | MOD_COMMAND2);
1406 		update_leds(id);
1407 		return (0);
1408 	}
1409 
1410 	if (sc != NULL) {
1411 		if (value < 0 || value >= sc->sc_maplen) {
1412 #ifdef DEBUG
1413 			printf("wskbd_translate: keycode %d out of range\n",
1414 			       value);
1415 #endif
1416 			return (0);
1417 		}
1418 		kp = sc->sc_map + value;
1419 	} else {
1420 		kp = &kpbuf;
1421 		wskbd_get_mapentry(id->t_keymap, value, kp);
1422 	}
1423 
1424 	/* if this key has a command, process it first */
1425 	if (sc != NULL && kp->command != KS_voidSymbol)
1426 		iscommand = internal_command(sc, &type, kp->command,
1427 					     kp->group1[0]);
1428 
1429 	/* Now update modifiers */
1430 	switch (kp->group1[0]) {
1431 	case KS_Shift_L:
1432 		update_modifier(id, type, 0, MOD_SHIFT_L);
1433 		break;
1434 
1435 	case KS_Shift_R:
1436 		update_modifier(id, type, 0, MOD_SHIFT_R);
1437 		break;
1438 
1439 	case KS_Shift_Lock:
1440 		update_modifier(id, type, 1, MOD_SHIFTLOCK);
1441 		break;
1442 
1443 	case KS_Caps_Lock:
1444 		update_modifier(id, type, 1, MOD_CAPSLOCK);
1445 		break;
1446 
1447 	case KS_Control_L:
1448 		update_modifier(id, type, 0, MOD_CONTROL_L);
1449 		break;
1450 
1451 	case KS_Control_R:
1452 		update_modifier(id, type, 0, MOD_CONTROL_R);
1453 		break;
1454 
1455 	case KS_Alt_L:
1456 		update_modifier(id, type, 0, MOD_META_L);
1457 		break;
1458 
1459 	case KS_Alt_R:
1460 		update_modifier(id, type, 0, MOD_META_R);
1461 		break;
1462 
1463 	case KS_Mode_switch:
1464 		update_modifier(id, type, 0, MOD_MODESHIFT);
1465 		break;
1466 
1467 	case KS_Num_Lock:
1468 		update_modifier(id, type, 1, MOD_NUMLOCK);
1469 		break;
1470 
1471 #if NWSDISPLAY > 0
1472 	case KS_Hold_Screen:
1473 		if (sc != NULL) {
1474 			update_modifier(id, type, 1, MOD_HOLDSCREEN);
1475 			wskbd_holdscreen(sc, id->t_modifiers & MOD_HOLDSCREEN);
1476 		}
1477 		break;
1478 #endif
1479 	}
1480 
1481 	/* If this is a key release or we are in command mode, we are done */
1482 	if (type != WSCONS_EVENT_KEY_DOWN || iscommand) {
1483 		update_leds(id);
1484 		return (0);
1485 	}
1486 
1487 	/* Get the keysym */
1488 	if (id->t_modifiers & MOD_MODESHIFT)
1489 		group = & kp->group2[0];
1490 	else
1491 		group = & kp->group1[0];
1492 
1493 	if ((id->t_modifiers & MOD_NUMLOCK) != 0 &&
1494 	    KS_GROUP(group[1]) == KS_GROUP_Keypad) {
1495 		if (MOD_ONESET(id, MOD_ANYSHIFT))
1496 			ksym = group[0];
1497 		else
1498 			ksym = group[1];
1499 	} else if (! MOD_ONESET(id, MOD_ANYSHIFT | MOD_CAPSLOCK)) {
1500 		ksym = group[0];
1501 	} else if (MOD_ONESET(id, MOD_CAPSLOCK)) {
1502 		if (! MOD_ONESET(id, MOD_SHIFT_L | MOD_SHIFT_R))
1503 			ksym = group[0];
1504 		else
1505 			ksym = group[1];
1506 		if (ksym >= KS_a && ksym <= KS_z)
1507 			ksym += KS_A - KS_a;
1508 		else if (ksym >= KS_agrave && ksym <= KS_thorn &&
1509 			 ksym != KS_division)
1510 			ksym += KS_Agrave - KS_agrave;
1511 	} else if (MOD_ONESET(id, MOD_ANYSHIFT)) {
1512 		ksym = group[1];
1513 	} else {
1514 		ksym = group[0];
1515 	}
1516 
1517 	/* Process compose sequence and dead accents */
1518 	res = KS_voidSymbol;
1519 
1520 	switch (KS_GROUP(ksym)) {
1521 	case KS_GROUP_Ascii:
1522 	case KS_GROUP_Keypad:
1523 	case KS_GROUP_Function:
1524 		res = ksym;
1525 		break;
1526 
1527 	case KS_GROUP_Mod:
1528 		if (ksym == KS_Multi_key) {
1529 			update_modifier(id, 1, 0, MOD_COMPOSE);
1530 			id->t_composelen = 2;
1531 		}
1532 		break;
1533 
1534 	case KS_GROUP_Dead:
1535 		if (id->t_composelen == 0) {
1536 			update_modifier(id, 1, 0, MOD_COMPOSE);
1537 			id->t_composelen = 1;
1538 			id->t_composebuf[0] = ksym;
1539 		} else
1540 			res = ksym;
1541 		break;
1542 	}
1543 
1544 	if (res == KS_voidSymbol) {
1545 		update_leds(id);
1546 		return (0);
1547 	}
1548 
1549 	if (id->t_composelen > 0) {
1550 		id->t_composebuf[2 - id->t_composelen] = res;
1551 		if (--id->t_composelen == 0) {
1552 			res = wskbd_compose_value(id->t_composebuf);
1553 			update_modifier(id, 0, 0, MOD_COMPOSE);
1554 		} else {
1555 			return (0);
1556 		}
1557 	}
1558 
1559 	update_leds(id);
1560 
1561 	/* We are done, return the symbol */
1562 	if (KS_GROUP(res) == KS_GROUP_Ascii) {
1563 		if (MOD_ONESET(id, MOD_ANYCONTROL)) {
1564 			if ((res >= KS_at && res <= KS_z) || res == KS_space)
1565 				res = res & 0x1f;
1566 			else if (res == KS_2)
1567 				res = 0x00;
1568 			else if (res >= KS_3 && res <= KS_7)
1569 				res = KS_Escape + (res - KS_3);
1570 			else if (res == KS_8)
1571 				res = KS_Delete;
1572 		}
1573 		if (MOD_ONESET(id, MOD_ANYMETA)) {
1574 			if (id->t_flags & WSKFL_METAESC) {
1575 				id->t_symbols[0] = KS_Escape;
1576 				id->t_symbols[1] = res;
1577 				return (2);
1578 			} else
1579 				res |= 0x80;
1580 		}
1581 	}
1582 
1583 	id->t_symbols[0] = res;
1584 	return (1);
1585 }
1586