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wskbd.c revision 1.26
      1 /* $NetBSD: wskbd.c,v 1.26 1999/07/06 07:42:23 augustss 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 static const char _copyright[] __attribute__ ((unused)) =
     37     "Copyright (c) 1996, 1997 Christopher G. Demetriou.  All rights reserved.";
     38 static const char _rcsid[] __attribute__ ((unused)) =
     39     "$NetBSD: wskbd.c,v 1.26 1999/07/06 07:42:23 augustss Exp $";
     40 
     41 /*
     42  * Copyright (c) 1992, 1993
     43  *	The Regents of the University of California.  All rights reserved.
     44  *
     45  * This software was developed by the Computer Systems Engineering group
     46  * at Lawrence Berkeley Laboratory under DARPA contract BG 91-66 and
     47  * contributed to Berkeley.
     48  *
     49  * All advertising materials mentioning features or use of this software
     50  * must display the following acknowledgement:
     51  *	This product includes software developed by the University of
     52  *	California, Lawrence Berkeley Laboratory.
     53  *
     54  * Redistribution and use in source and binary forms, with or without
     55  * modification, are permitted provided that the following conditions
     56  * are met:
     57  * 1. Redistributions of source code must retain the above copyright
     58  *    notice, this list of conditions and the following disclaimer.
     59  * 2. Redistributions in binary form must reproduce the above copyright
     60  *    notice, this list of conditions and the following disclaimer in the
     61  *    documentation and/or other materials provided with the distribution.
     62  * 3. All advertising materials mentioning features or use of this software
     63  *    must display the following acknowledgement:
     64  *	This product includes software developed by the University of
     65  *	California, Berkeley and its contributors.
     66  * 4. Neither the name of the University nor the names of its contributors
     67  *    may be used to endorse or promote products derived from this software
     68  *    without specific prior written permission.
     69  *
     70  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
     71  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     72  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
     73  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
     74  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
     75  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
     76  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
     77  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
     78  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
     79  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
     80  * SUCH DAMAGE.
     81  *
     82  *	@(#)kbd.c	8.2 (Berkeley) 10/30/93
     83  */
     84 
     85 /*
     86  * Keyboard driver (/dev/wskbd*).  Translates incoming bytes to ASCII or
     87  * to `wscons_events' and passes them up to the appropriate reader.
     88  */
     89 
     90 #include "opt_ddb.h"
     91 
     92 #include <sys/param.h>
     93 #include <sys/conf.h>
     94 #include <sys/device.h>
     95 #include <sys/ioctl.h>
     96 #include <sys/kernel.h>
     97 #include <sys/proc.h>
     98 #include <sys/syslog.h>
     99 #include <sys/systm.h>
    100 #include <sys/malloc.h>
    101 #include <sys/tty.h>
    102 #include <sys/signalvar.h>
    103 #include <sys/errno.h>
    104 #include <sys/fcntl.h>
    105 #include <sys/vnode.h>
    106 
    107 #include <dev/wscons/wsconsio.h>
    108 #include <dev/wscons/wskbdvar.h>
    109 #include <dev/wscons/wsksymdef.h>
    110 #include <dev/wscons/wsksymvar.h>
    111 #include <dev/wscons/wseventvar.h>
    112 #include <dev/wscons/wscons_callbacks.h>
    113 
    114 #include "opt_wsdisplay_compat.h"
    115 
    116 #include "wsdisplay.h"
    117 
    118 struct wskbd_internal {
    119 	const struct wskbd_mapdata *t_keymap;
    120 
    121 	const struct wskbd_consops *t_consops;
    122 	void	*t_consaccesscookie;
    123 
    124 	int	t_modifiers;
    125 	int	t_composelen;		/* remaining entries in t_composebuf */
    126 	keysym_t t_composebuf[2];
    127 
    128 	struct wskbd_softc *t_sc;	/* back pointer */
    129 };
    130 
    131 struct wskbd_softc {
    132 	struct device	sc_dv;
    133 
    134 	struct wskbd_internal *id;
    135 
    136 	const struct wskbd_accessops *sc_accessops;
    137 	void *sc_accesscookie;
    138 
    139 	int	sc_ledstate;
    140 
    141 	int	sc_ready;		/* accepting events */
    142 	struct wseventvar sc_events;	/* event queue state */
    143 
    144 	int	sc_isconsole;
    145 #if NWSDISPLAY > 0
    146 	struct device	*sc_displaydv;
    147 #endif
    148 
    149 	struct wskbd_bell_data sc_bell_data;
    150 	struct wskbd_keyrepeat_data sc_keyrepeat_data;
    151 
    152 	int	sc_repeating;		/* we've called timeout() */
    153 	keysym_t sc_repeatsym;		/* repeated symbol */
    154 
    155 	int	sc_translating;		/* xlate to chars for emulation */
    156 
    157 	int	sc_maplen;		/* number of entries in sc_map */
    158 	struct wscons_keymap *sc_map;	/* current translation map */
    159 	kbd_t sc_layout; /* current layout */
    160 
    161 	int		sc_refcnt;
    162 	u_char		sc_dying;	/* device is being detached */
    163 
    164 };
    165 
    166 #define MOD_SHIFT_L		(1 << 0)
    167 #define MOD_SHIFT_R		(1 << 1)
    168 #define MOD_SHIFTLOCK		(1 << 2)
    169 #define MOD_CAPSLOCK		(1 << 3)
    170 #define MOD_CONTROL_L		(1 << 4)
    171 #define MOD_CONTROL_R		(1 << 5)
    172 #define MOD_META_L		(1 << 6)
    173 #define MOD_META_R		(1 << 7)
    174 #define MOD_MODESHIFT		(1 << 8)
    175 #define MOD_NUMLOCK		(1 << 9)
    176 #define MOD_COMPOSE		(1 << 10)
    177 #define MOD_HOLDSCREEN		(1 << 11)
    178 #define MOD_COMMAND		(1 << 12)
    179 #define MOD_COMMAND1		(1 << 13)
    180 #define MOD_COMMAND2		(1 << 14)
    181 
    182 #define MOD_ANYSHIFT		(MOD_SHIFT_L | MOD_SHIFT_R | MOD_SHIFTLOCK)
    183 #define MOD_ANYCONTROL		(MOD_CONTROL_L | MOD_CONTROL_R)
    184 #define MOD_ANYMETA		(MOD_META_L | MOD_META_R)
    185 
    186 #define MOD_ONESET(id, mask)	(((id)->t_modifiers & (mask)) != 0)
    187 #define MOD_ALLSET(id, mask)	(((id)->t_modifiers & (mask)) == (mask))
    188 
    189 int	wskbd_match __P((struct device *, struct cfdata *, void *));
    190 void	wskbd_attach __P((struct device *, struct device *, void *));
    191 int	wskbd_detach __P((struct device *, int));
    192 int	wskbd_activate __P((struct device *, enum devact));
    193 
    194 static inline void update_leds __P((struct wskbd_internal *));
    195 static inline void update_modifier __P((struct wskbd_internal *, u_int, int, int));
    196 static int internal_command __P((struct wskbd_softc *, u_int *, keysym_t));
    197 static keysym_t wskbd_translate __P((struct wskbd_internal *, u_int, int));
    198 static int wskbd_enable __P((struct wskbd_softc *, int));
    199 #if NWSDISPLAY > 0
    200 static void wskbd_holdscreen __P((struct wskbd_softc *, int));
    201 #endif
    202 
    203 int	wskbd_do_ioctl __P((struct wskbd_softc *, u_long, caddr_t,
    204 			    int, struct proc *));
    205 
    206 struct cfattach wskbd_ca = {
    207 	sizeof (struct wskbd_softc), wskbd_match, wskbd_attach,
    208 	wskbd_detach, wskbd_activate
    209 };
    210 
    211 extern struct cfdriver wskbd_cd;
    212 
    213 #ifndef WSKBD_DEFAULT_BELL_PITCH
    214 #define	WSKBD_DEFAULT_BELL_PITCH	1500	/* 1500Hz */
    215 #endif
    216 #ifndef WSKBD_DEFAULT_BELL_PERIOD
    217 #define	WSKBD_DEFAULT_BELL_PERIOD	100	/* 100ms */
    218 #endif
    219 #ifndef WSKBD_DEFAULT_BELL_VOLUME
    220 #define	WSKBD_DEFAULT_BELL_VOLUME	50	/* 50% volume */
    221 #endif
    222 
    223 struct wskbd_bell_data wskbd_default_bell_data = {
    224 	WSKBD_BELL_DOALL,
    225 	WSKBD_DEFAULT_BELL_PITCH,
    226 	WSKBD_DEFAULT_BELL_PERIOD,
    227 	WSKBD_DEFAULT_BELL_VOLUME,
    228 };
    229 
    230 #ifndef WSKBD_DEFAULT_KEYREPEAT_DEL1
    231 #define	WSKBD_DEFAULT_KEYREPEAT_DEL1	400	/* 400ms to start repeating */
    232 #endif
    233 #ifndef WSKBD_DEFAULT_KEYREPEAT_DELN
    234 #define	WSKBD_DEFAULT_KEYREPEAT_DELN	100	/* 100ms to between repeats */
    235 #endif
    236 
    237 struct wskbd_keyrepeat_data wskbd_default_keyrepeat_data = {
    238 	WSKBD_KEYREPEAT_DOALL,
    239 	WSKBD_DEFAULT_KEYREPEAT_DEL1,
    240 	WSKBD_DEFAULT_KEYREPEAT_DELN,
    241 };
    242 
    243 cdev_decl(wskbd);
    244 
    245 #if NWSDISPLAY > 0
    246 static void wskbd_repeat __P((void *v));
    247 #endif
    248 
    249 static int wskbd_console_initted;
    250 static struct wskbd_softc *wskbd_console_device;
    251 static struct wskbd_internal wskbd_console_data;
    252 
    253 /*
    254  * Print function (for parent devices).
    255  */
    256 int
    257 wskbddevprint(aux, pnp)
    258 	void *aux;
    259 	const char *pnp;
    260 {
    261 #if 0
    262 	struct wskbddev_attach_args *ap = aux;
    263 #endif
    264 
    265 	if (pnp)
    266 		printf("wskbd at %s", pnp);
    267 #if 0
    268 	printf(" console %d", ap->console);
    269 #endif
    270 
    271 	return (UNCONF);
    272 }
    273 
    274 int
    275 wskbd_match(parent, match, aux)
    276 	struct device *parent;
    277 	struct cfdata *match;
    278 	void *aux;
    279 {
    280 	struct wskbddev_attach_args *ap = aux;
    281 
    282 	if (match->wskbddevcf_console != WSKBDDEVCF_CONSOLE_UNK) {
    283 		/*
    284 		 * If console-ness of device specified, either match
    285 		 * exactly (at high priority), or fail.
    286 		 */
    287 		if (match->wskbddevcf_console != 0 && ap->console != 0)
    288 			return (10);
    289 		else
    290 			return (0);
    291 	}
    292 
    293 	/* If console-ness unspecified, it wins. */
    294 	return (1);
    295 }
    296 
    297 void
    298 wskbd_attach(parent, self, aux)
    299 	struct device *parent, *self;
    300 	void *aux;
    301 {
    302 	struct wskbd_softc *sc = (struct wskbd_softc *)self;
    303 	struct wskbddev_attach_args *ap = aux;
    304 
    305 #if NWSDISPLAY > 0
    306 	sc->sc_displaydv = NULL;
    307 #endif
    308 	sc->sc_isconsole = ap->console;
    309 
    310 	if (ap->console) {
    311 		KASSERT(wskbd_console_initted);
    312 		KASSERT(wskbd_console_device == NULL);
    313 
    314 		wskbd_console_device = sc;
    315 
    316 		printf(": console keyboard");
    317 
    318 #if NWSDISPLAY > 0
    319 		if ((sc->sc_displaydv = wsdisplay_set_console_kbd(self)))
    320 			printf(", using %s", sc->sc_displaydv->dv_xname);
    321 #endif
    322 	}
    323 	printf("\n");
    324 
    325 	if (ap->console) {
    326 		sc->id = &wskbd_console_data;
    327 	} else {
    328 		sc->id = malloc(sizeof(struct wskbd_internal),
    329 				M_DEVBUF, M_WAITOK);
    330 		sc->id->t_keymap = ap->keymap;
    331 		sc->id->t_modifiers = 0;
    332 	}
    333 
    334 	sc->id->t_sc = sc;
    335 
    336 	sc->sc_accessops = ap->accessops;
    337 	sc->sc_accesscookie = ap->accesscookie;
    338 	sc->sc_ready = 0;				/* sanity */
    339 	sc->sc_repeating = 0;
    340 	sc->sc_translating = 1;
    341 	sc->sc_ledstate = -1; /* force update */
    342 
    343 	if (wskbd_load_keymap(sc->id->t_keymap,
    344 			      &sc->sc_map, &sc->sc_maplen) != 0)
    345 		panic("cannot load keymap");
    346 
    347 	sc->sc_layout = sc->id->t_keymap->layout;
    348 
    349 	/* set default bell and key repeat data */
    350 	sc->sc_bell_data = wskbd_default_bell_data;
    351 	sc->sc_keyrepeat_data = wskbd_default_keyrepeat_data;
    352 }
    353 
    354 void
    355 wskbd_cnattach(consops, conscookie, mapdata)
    356 	const struct wskbd_consops *consops;
    357 	void *conscookie;
    358 	const struct wskbd_mapdata *mapdata;
    359 {
    360 
    361 	KASSERT(!wskbd_console_initted);
    362 
    363 	wskbd_console_data.t_keymap = mapdata;
    364 
    365 	wskbd_console_data.t_consops = consops;
    366 	wskbd_console_data.t_consaccesscookie = conscookie;
    367 
    368 #if NWSDISPLAY > 0
    369 	wsdisplay_set_cons_kbd(wskbd_cngetc, wskbd_cnpollc);
    370 #endif
    371 
    372 	wskbd_console_initted = 1;
    373 }
    374 
    375 #if NWSDISPLAY > 0
    376 static void
    377 wskbd_repeat(v)
    378 	void *v;
    379 {
    380 	struct wskbd_softc *sc = (struct wskbd_softc *)v;
    381 	int s = spltty();
    382 
    383 	if (!sc->sc_repeating) {
    384 		/*
    385 		 * race condition: a "key up" event came in when wskbd_repeat()
    386 		 * was already called but not yet spltty()'d
    387 		 */
    388 		splx(s);
    389 		return;
    390 	}
    391 	if (sc->sc_displaydv != NULL)
    392 		wsdisplay_kbdinput(sc->sc_displaydv, sc->sc_repeatsym);
    393 	timeout(wskbd_repeat, sc,
    394 		(hz * sc->sc_keyrepeat_data.delN) / 1000);
    395 	splx(s);
    396 }
    397 #endif
    398 
    399 int
    400 wskbd_activate(self, act)
    401 	struct device *self;
    402 	enum devact act;
    403 {
    404 	/* XXX should we do something more? */
    405 	return (0);
    406 }
    407 
    408 /*
    409  * Detach a keyboard.  To keep track of users of the softc we keep
    410  * a reference count that's incremented while inside, e.g., read.
    411  * If the mouse is active and the reference count is > 0 (0 is the
    412  * normal state) we post an event and then wait for the process
    413  * that had the reference to wake us up again.  Then we blow away the
    414  * vnode and return (which will deallocate the softc).
    415  * XXX what should we do if we are connected to a display?
    416  */
    417 int
    418 wskbd_detach(self, flags)
    419 	struct device  *self;
    420 	int flags;
    421 {
    422 	struct wskbd_softc *sc = (struct wskbd_softc *)self;
    423 	struct wseventvar *evar;
    424 	int maj, mn;
    425 	int s;
    426 
    427 	evar = &sc->sc_events;
    428 	if (evar->io) {
    429 		s = spltty();
    430 		if (--sc->sc_refcnt >= 0) {
    431 			/* Wake everyone by generating a dummy event. */
    432 			if (++evar->put >= WSEVENT_QSIZE)
    433 				evar->put = 0;
    434 			WSEVENT_WAKEUP(evar);
    435 			/* Wait for processes to go away. */
    436 			if (tsleep(sc, PZERO, "wskdet", hz * 60))
    437 				printf("wskbd_detach: %s didn't detach\n",
    438 				       sc->sc_dv.dv_xname);
    439 		}
    440 		splx(s);
    441 	}
    442 
    443 	/* locate the major number */
    444 	for (maj = 0; maj < nchrdev; maj++)
    445 		if (cdevsw[maj].d_open == wskbdopen)
    446 			break;
    447 
    448 	/* Nuke the vnodes for any open instances. */
    449 	mn = self->dv_unit;
    450 	vdevgone(maj, mn, mn, VCHR);
    451 
    452 	return (0);
    453 }
    454 
    455 void
    456 wskbd_input(dev, type, value)
    457 	struct device *dev;
    458 	u_int type;
    459 	int value;
    460 {
    461 	struct wskbd_softc *sc = (struct wskbd_softc *)dev;
    462 	struct wscons_event *ev;
    463 	struct wseventvar *evar;
    464 	struct timeval xxxtime;
    465 #if NWSDISPLAY > 0
    466 	keysym_t ks;
    467 #endif
    468 	int put;
    469 
    470 #if NWSDISPLAY > 0
    471 	if (sc->sc_repeating) {
    472 		sc->sc_repeating = 0;
    473 		untimeout(wskbd_repeat, sc);
    474 	}
    475 
    476 	/*
    477 	 * If /dev/wskbd is not connected in event mode translate and
    478 	 * send upstream.
    479 	 */
    480 	if (sc->sc_translating) {
    481 		ks = wskbd_translate(sc->id, type, value);
    482 		if (ks != KS_voidSymbol) {
    483 			sc->sc_repeatsym = ks;
    484 			if (sc->sc_displaydv != NULL)
    485 				wsdisplay_kbdinput(sc->sc_displaydv,
    486 						   sc->sc_repeatsym);
    487 
    488 			sc->sc_repeating = 1;
    489 			timeout(wskbd_repeat, sc,
    490 				(hz * sc->sc_keyrepeat_data.del1) / 1000);
    491 		}
    492 		return;
    493 	}
    494 #endif
    495 
    496 	/*
    497 	 * Keyboard is generating events.  Turn this keystroke into an
    498 	 * event and put it in the queue.  If the queue is full, the
    499 	 * keystroke is lost (sorry!).
    500 	 */
    501 
    502 	/* no one to receive; punt!*/
    503 	if (!sc->sc_ready)
    504 		return;
    505 
    506 	evar = &sc->sc_events;
    507 
    508 	put = evar->put;
    509 	ev = &evar->q[put];
    510 	put = (put + 1) % WSEVENT_QSIZE;
    511 	if (put == evar->get) {
    512 		log(LOG_WARNING, "%s: event queue overflow\n",
    513 		    sc->sc_dv.dv_xname);
    514 		return;
    515 	}
    516 	ev->type = type;
    517 	ev->value = value;
    518 	microtime(&xxxtime);
    519 	TIMEVAL_TO_TIMESPEC(&xxxtime, &ev->time);
    520 	evar->put = put;
    521 	WSEVENT_WAKEUP(evar);
    522 }
    523 
    524 #ifdef WSDISPLAY_COMPAT_RAWKBD
    525 void
    526 wskbd_rawinput(dev, buf, len)
    527 	struct device *dev;
    528 	char *buf;
    529 	int len;
    530 {
    531 #if NWSDISPLAY > 0
    532 	struct wskbd_softc *sc = (struct wskbd_softc *)dev;
    533 	int i;
    534 
    535 	for (i = 0; i < len; i++)
    536 		wsdisplay_kbdinput(sc->sc_displaydv, buf[i]);
    537 	/* this is KS_GROUP_Ascii */
    538 #endif
    539 }
    540 #endif /* WSDISPLAY_COMPAT_RAWKBD */
    541 
    542 #if NWSDISPLAY > 0
    543 static void
    544 wskbd_holdscreen(sc, hold)
    545 	struct wskbd_softc *sc;
    546 	int hold;
    547 {
    548 	int new_state;
    549 
    550 	if (sc->sc_displaydv != NULL) {
    551 		wsdisplay_kbdholdscreen(sc->sc_displaydv, hold);
    552 		new_state = sc->sc_ledstate;
    553 		if (hold)
    554 			new_state |= WSKBD_LED_SCROLL;
    555 		else
    556 			new_state &= ~WSKBD_LED_SCROLL;
    557 		if (new_state != sc->sc_ledstate) {
    558 			(*sc->sc_accessops->set_leds)(sc->sc_accesscookie,
    559 						      new_state);
    560 			sc->sc_ledstate = new_state;
    561 		}
    562 	}
    563 }
    564 #endif
    565 
    566 static int
    567 wskbd_enable(sc, on)
    568 	struct wskbd_softc *sc;
    569 	int on;
    570 {
    571 	int res;
    572 
    573 	/* XXX reference count? */
    574 	if (!on && (!sc->sc_translating
    575 #if NWSDISPLAY > 0
    576 		    || sc->sc_displaydv
    577 #endif
    578 		))
    579 		return (EBUSY);
    580 
    581 	res = (*sc->sc_accessops->enable)(sc->sc_accesscookie, on);
    582 	return (res);
    583 }
    584 
    585 int
    586 wskbdopen(dev, flags, mode, p)
    587 	dev_t dev;
    588 	int flags, mode;
    589 	struct proc *p;
    590 {
    591 	struct wskbd_softc *sc;
    592 	int unit;
    593 
    594 	unit = minor(dev);
    595 	if (unit >= wskbd_cd.cd_ndevs ||	/* make sure it was attached */
    596 	    (sc = wskbd_cd.cd_devs[unit]) == NULL)
    597 		return (ENXIO);
    598 
    599 	if (sc->sc_dying)
    600 		return (EIO);
    601 
    602 	if (sc->sc_events.io)			/* and that it's not in use */
    603 		return (EBUSY);
    604 
    605 	sc->sc_events.io = p;
    606 	wsevent_init(&sc->sc_events);		/* may cause sleep */
    607 
    608 	sc->sc_translating = 0;
    609 	sc->sc_ready = 1;			/* start accepting events */
    610 
    611 	wskbd_enable(sc, 1);
    612 	return (0);
    613 }
    614 
    615 int
    616 wskbdclose(dev, flags, mode, p)
    617 	dev_t dev;
    618 	int flags, mode;
    619 	struct proc *p;
    620 {
    621 	struct wskbd_softc *sc = wskbd_cd.cd_devs[minor(dev)];
    622 
    623 	sc->sc_ready = 0;			/* stop accepting events */
    624 	sc->sc_translating = 1;
    625 
    626 	wsevent_fini(&sc->sc_events);
    627 	sc->sc_events.io = NULL;
    628 
    629 	wskbd_enable(sc, 0);
    630 	return (0);
    631 }
    632 
    633 int
    634 wskbdread(dev, uio, flags)
    635 	dev_t dev;
    636 	struct uio *uio;
    637 	int flags;
    638 {
    639 	struct wskbd_softc *sc = wskbd_cd.cd_devs[minor(dev)];
    640 	int error;
    641 
    642 	if (sc->sc_dying)
    643 		return (EIO);
    644 
    645 	sc->sc_refcnt++;
    646 	error = wsevent_read(&sc->sc_events, uio, flags);
    647 	if (--sc->sc_refcnt < 0) {
    648 		wakeup(sc);
    649 		error = EIO;
    650 	}
    651 	return (error);
    652 }
    653 
    654 int
    655 wskbdioctl(dev, cmd, data, flag, p)
    656 	dev_t dev;
    657 	u_long cmd;
    658 	caddr_t data;
    659 	int flag;
    660 	struct proc *p;
    661 {
    662 	struct wskbd_softc *sc = wskbd_cd.cd_devs[minor(dev)];
    663 	int error;
    664 
    665 	sc->sc_refcnt++;
    666 	error = wskbd_do_ioctl(sc, cmd, data, flag, p);
    667 	if (--sc->sc_refcnt < 0)
    668 		wakeup(sc);
    669 	return (error);
    670 }
    671 
    672 int
    673 wskbd_do_ioctl(sc, cmd, data, flag, p)
    674 	struct wskbd_softc *sc;
    675 	u_long cmd;
    676 	caddr_t data;
    677 	int flag;
    678 	struct proc *p;
    679 {
    680 	int error;
    681 
    682 	/*
    683 	 * Try the generic ioctls that the wskbd interface supports.
    684 	 */
    685 	switch (cmd) {
    686 	case FIONBIO:		/* we will remove this someday (soon???) */
    687 		return (0);
    688 
    689 	case FIOASYNC:
    690 		sc->sc_events.async = *(int *)data != 0;
    691 		return (0);
    692 
    693 	case TIOCSPGRP:
    694 		if (*(int *)data != sc->sc_events.io->p_pgid)
    695 			return (EPERM);
    696 		return (0);
    697 	}
    698 
    699 	/*
    700 	 * Try the keyboard driver for WSKBDIO ioctls.  It returns -1
    701 	 * if it didn't recognize the request.
    702 	 */
    703 	error = wskbd_displayioctl((struct device *)sc, cmd, data, flag, p);
    704 	return (error != -1 ? error : ENOTTY);
    705 }
    706 
    707 /*
    708  * WSKBDIO ioctls, handled in both emulation mode and in ``raw'' mode.
    709  * Some of these have no real effect in raw mode, however.
    710  */
    711 int
    712 wskbd_displayioctl(dev, cmd, data, flag, p)
    713 	struct device *dev;
    714 	u_long cmd;
    715 	caddr_t data;
    716 	int flag;
    717 	struct proc *p;
    718 {
    719 	struct wskbd_softc *sc = (struct wskbd_softc *)dev;
    720 	struct wskbd_bell_data *ubdp, *kbdp;
    721 	struct wskbd_keyrepeat_data *ukdp, *kkdp;
    722 	struct wskbd_map_data *umdp;
    723 	struct wskbd_mapdata md;
    724 	void *buf;
    725 	int len, error;
    726 
    727 	switch (cmd) {
    728 #define	SETBELL(dstp, srcp, dfltp)					\
    729     do {								\
    730 	(dstp)->pitch = ((srcp)->which & WSKBD_BELL_DOPITCH) ?		\
    731 	    (srcp)->pitch : (dfltp)->pitch;				\
    732 	(dstp)->period = ((srcp)->which & WSKBD_BELL_DOPERIOD) ?	\
    733 	    (srcp)->period : (dfltp)->period;				\
    734 	(dstp)->volume = ((srcp)->which & WSKBD_BELL_DOVOLUME) ?	\
    735 	    (srcp)->volume : (dfltp)->volume;				\
    736 	(dstp)->which = WSKBD_BELL_DOALL;				\
    737     } while (0)
    738 
    739 	case WSKBDIO_BELL:
    740 		if ((flag & FWRITE) == 0)
    741 			return (EACCES);
    742 		return ((*sc->sc_accessops->ioctl)(sc->sc_accesscookie,
    743 		    WSKBDIO_COMPLEXBELL, (caddr_t)&sc->sc_bell_data, flag, p));
    744 
    745 	case WSKBDIO_COMPLEXBELL:
    746 		if ((flag & FWRITE) == 0)
    747 			return (EACCES);
    748 		ubdp = (struct wskbd_bell_data *)data;
    749 		SETBELL(ubdp, ubdp, &sc->sc_bell_data);
    750 		return ((*sc->sc_accessops->ioctl)(sc->sc_accesscookie,
    751 		    WSKBDIO_COMPLEXBELL, (caddr_t)ubdp, flag, p));
    752 
    753 	case WSKBDIO_SETBELL:
    754 		if ((flag & FWRITE) == 0)
    755 			return (EACCES);
    756 		kbdp = &sc->sc_bell_data;
    757 setbell:
    758 		ubdp = (struct wskbd_bell_data *)data;
    759 		SETBELL(kbdp, ubdp, kbdp);
    760 		return (0);
    761 
    762 	case WSKBDIO_GETBELL:
    763 		kbdp = &sc->sc_bell_data;
    764 getbell:
    765 		ubdp = (struct wskbd_bell_data *)data;
    766 		SETBELL(ubdp, kbdp, kbdp);
    767 		return (0);
    768 
    769 	case WSKBDIO_SETDEFAULTBELL:
    770 		if ((error = suser(p->p_ucred, &p->p_acflag)) != 0)
    771 			return (error);
    772 		kbdp = &wskbd_default_bell_data;
    773 		goto setbell;
    774 
    775 
    776 	case WSKBDIO_GETDEFAULTBELL:
    777 		kbdp = &wskbd_default_bell_data;
    778 		goto getbell;
    779 
    780 #undef SETBELL
    781 
    782 #define	SETKEYREPEAT(dstp, srcp, dfltp)					\
    783     do {								\
    784 	(dstp)->del1 = ((srcp)->which & WSKBD_KEYREPEAT_DODEL1) ?	\
    785 	    (srcp)->del1 : (dfltp)->del1;				\
    786 	(dstp)->delN = ((srcp)->which & WSKBD_KEYREPEAT_DODELN) ?	\
    787 	    (srcp)->delN : (dfltp)->delN;				\
    788 	(dstp)->which = WSKBD_KEYREPEAT_DOALL;				\
    789     } while (0)
    790 
    791 	case WSKBDIO_SETKEYREPEAT:
    792 		if ((flag & FWRITE) == 0)
    793 			return (EACCES);
    794 		kkdp = &sc->sc_keyrepeat_data;
    795 setkeyrepeat:
    796 		ukdp = (struct wskbd_keyrepeat_data *)data;
    797 		SETKEYREPEAT(kkdp, ukdp, kkdp);
    798 		return (0);
    799 
    800 	case WSKBDIO_GETKEYREPEAT:
    801 		kkdp = &sc->sc_keyrepeat_data;
    802 getkeyrepeat:
    803 		ukdp = (struct wskbd_keyrepeat_data *)data;
    804 		SETKEYREPEAT(ukdp, kkdp, kkdp);
    805 		return (0);
    806 
    807 	case WSKBDIO_SETDEFAULTKEYREPEAT:
    808 		if ((error = suser(p->p_ucred, &p->p_acflag)) != 0)
    809 			return (error);
    810 		kkdp = &wskbd_default_keyrepeat_data;
    811 		goto setkeyrepeat;
    812 
    813 
    814 	case WSKBDIO_GETDEFAULTKEYREPEAT:
    815 		kkdp = &wskbd_default_keyrepeat_data;
    816 		goto getkeyrepeat;
    817 
    818 #undef SETKEYREPEAT
    819 
    820 	case WSKBDIO_SETMAP:
    821 		if ((flag & FWRITE) == 0)
    822 			return (EACCES);
    823 		umdp = (struct wskbd_map_data *)data;
    824 		len = umdp->maplen*sizeof(struct wscons_keymap);
    825 		buf = malloc(len, M_TEMP, M_WAITOK);
    826 		error = copyin(umdp->map, buf, len);
    827 		if (error == 0) {
    828 			wskbd_init_keymap(umdp->maplen,
    829 					  &sc->sc_map, &sc->sc_maplen);
    830 			memcpy(sc->sc_map, buf, len);
    831 			sc->sc_layout = KB_USER;
    832 		}
    833 		free(buf, M_TEMP);
    834 		return(error);
    835 
    836 	case WSKBDIO_GETMAP:
    837 		umdp = (struct wskbd_map_data *)data;
    838 		if (umdp->maplen > sc->sc_maplen)
    839 			umdp->maplen = sc->sc_maplen;
    840 		error = copyout(sc->sc_map, umdp->map,
    841 				umdp->maplen*sizeof(struct wscons_keymap));
    842 		return(error);
    843 
    844 	case WSKBDIO_GETENCODING:
    845 		*((kbd_t *) data) = sc->sc_layout;
    846 		return(0);
    847 
    848 	case WSKBDIO_SETENCODING:
    849 		if ((flag & FWRITE) == 0)
    850 			return (EACCES);
    851 		md = *(sc->id->t_keymap); /* structure assignment */
    852 		md.layout = *((kbd_t *)data);
    853 		error = wskbd_load_keymap(&md, &sc->sc_map, &sc->sc_maplen);
    854 		if (error == 0)
    855 			sc->sc_layout = *((kbd_t *)data);
    856 		return(error);
    857 	}
    858 
    859 	/*
    860 	 * Try the keyboard driver for WSKBDIO ioctls.  It returns -1
    861 	 * if it didn't recognize the request, and in turn we return
    862 	 * -1 if we didn't recognize the request.
    863 	 */
    864 /* printf("kbdaccess\n"); */
    865 	error = (*sc->sc_accessops->ioctl)(sc->sc_accesscookie, cmd, data,
    866 					   flag, p);
    867 #ifdef WSDISPLAY_COMPAT_RAWKBD
    868 	if (!error && cmd == WSKBDIO_SETMODE && *(int *)data == WSKBD_RAW) {
    869 		int s = spltty();
    870 		sc->id->t_modifiers &= ~(MOD_SHIFT_L | MOD_SHIFT_R
    871 					 | MOD_CONTROL_L | MOD_CONTROL_R
    872 					 | MOD_META_L | MOD_META_R
    873 					 | MOD_COMMAND
    874 					 | MOD_COMMAND1 | MOD_COMMAND2);
    875 #if NWSDISPLAY > 0
    876 		if (sc->sc_repeating) {
    877 			sc->sc_repeating = 0;
    878 			untimeout(wskbd_repeat, sc);
    879 		}
    880 #endif
    881 		splx(s);
    882 	}
    883 #endif
    884 	return (error);
    885 }
    886 
    887 int
    888 wskbdpoll(dev, events, p)
    889 	dev_t dev;
    890 	int events;
    891 	struct proc *p;
    892 {
    893 	struct wskbd_softc *sc = wskbd_cd.cd_devs[minor(dev)];
    894 
    895 	return (wsevent_poll(&sc->sc_events, events, p));
    896 }
    897 
    898 #if NWSDISPLAY > 0
    899 
    900 int
    901 wskbd_pickfree()
    902 {
    903 	int i;
    904 	struct wskbd_softc *sc;
    905 
    906 	for (i = 0; i < wskbd_cd.cd_ndevs; i++) {
    907 		if ((sc = wskbd_cd.cd_devs[i]) == NULL)
    908 			continue;
    909 		if (sc->sc_displaydv == NULL)
    910 			return (i);
    911 	}
    912 	return (-1);
    913 }
    914 
    915 int
    916 wskbd_set_display(idx, displaydv, kbddv)
    917 	int idx;
    918 	struct device *displaydv, **kbddv;
    919 {
    920 	struct wskbd_softc *sc;
    921 
    922 	if (idx >= wskbd_cd.cd_ndevs ||	/* make sure it was attached */
    923 	    (sc = wskbd_cd.cd_devs[idx]) == NULL)
    924 		return (ENXIO);
    925 
    926 	if (sc->sc_isconsole)
    927 		return (EBUSY);
    928 	if (displaydv) {
    929 		if (sc->sc_displaydv)
    930 			return (EBUSY);
    931 		printf("%s: connecting to %s\n",
    932 		       sc->sc_dv.dv_xname, displaydv->dv_xname);
    933 	} else {
    934 		if (sc->sc_displaydv == NULL)
    935 			return (ENXIO);
    936 		printf("%s: disconnecting\n", sc->sc_dv.dv_xname);
    937 	}
    938 
    939 	sc->sc_displaydv = displaydv;
    940 	wskbd_enable(sc, displaydv != NULL);
    941 	if (kbddv)
    942 		*kbddv = &sc->sc_dv;
    943 	return (0);
    944 }
    945 
    946 struct device *
    947 wskbd_set_console_display(displaydv)
    948 	struct device *displaydv;
    949 {
    950 	if (!wskbd_console_device)
    951 		return (0);
    952 	wskbd_console_device->sc_displaydv = displaydv;
    953 	return (&wskbd_console_device->sc_dv);
    954 }
    955 
    956 #endif /* NWSDISPLAY > 0 */
    957 
    958 /*
    959  * Console interface.
    960  */
    961 int
    962 wskbd_cngetc(dev)
    963 	dev_t dev;
    964 {
    965 	u_int type;
    966 	int data;
    967 	keysym_t ks;
    968 
    969 	if (!wskbd_console_initted)
    970 		return 0;
    971 
    972 	if (wskbd_console_device != NULL &&
    973 	    !wskbd_console_device->sc_translating)
    974 		return 0;
    975 
    976 	for(;;) {
    977 		(*wskbd_console_data.t_consops->getc)
    978 		    (wskbd_console_data.t_consaccesscookie, &type, &data);
    979 		ks = wskbd_translate(&wskbd_console_data, type, data);
    980 
    981 		if (KS_GROUP(ks) == KS_GROUP_Ascii)
    982 			return (KS_VALUE(ks));
    983 	}
    984 }
    985 
    986 void
    987 wskbd_cnpollc(dev, poll)
    988 	dev_t dev;
    989 	int poll;
    990 {
    991 
    992 	if (!wskbd_console_initted)
    993 		return;
    994 
    995 	if (wskbd_console_device != NULL &&
    996 	    !wskbd_console_device->sc_translating)
    997 		return;
    998 
    999 	(*wskbd_console_data.t_consops->pollc)
   1000 	    (wskbd_console_data.t_consaccesscookie, poll);
   1001 }
   1002 
   1003 static inline void
   1004 update_leds(id)
   1005 	struct wskbd_internal *id;
   1006 {
   1007 	int new_state;
   1008 
   1009 	new_state = 0;
   1010 	if (id->t_modifiers & (MOD_SHIFTLOCK | MOD_CAPSLOCK))
   1011 		new_state |= WSKBD_LED_CAPS;
   1012 	if (id->t_modifiers & MOD_NUMLOCK)
   1013 		new_state |= WSKBD_LED_NUM;
   1014 	if (id->t_modifiers & MOD_COMPOSE)
   1015 		new_state |= WSKBD_LED_COMPOSE;
   1016 	if (id->t_modifiers & MOD_HOLDSCREEN)
   1017 		new_state |= WSKBD_LED_SCROLL;
   1018 
   1019 	if (id->t_sc && new_state != id->t_sc->sc_ledstate) {
   1020 		(*id->t_sc->sc_accessops->set_leds)
   1021 		    (id->t_sc->sc_accesscookie, new_state);
   1022 		id->t_sc->sc_ledstate = new_state;
   1023 	}
   1024 }
   1025 
   1026 static inline void
   1027 update_modifier(id, type, toggle, mask)
   1028 	struct wskbd_internal *id;
   1029 	u_int type;
   1030 	int toggle;
   1031 	int mask;
   1032 {
   1033 	if (toggle) {
   1034 		if (type == WSCONS_EVENT_KEY_DOWN)
   1035 			id->t_modifiers ^= mask;
   1036 	} else {
   1037 		if (type == WSCONS_EVENT_KEY_DOWN)
   1038 			id->t_modifiers |= mask;
   1039 		else
   1040 			id->t_modifiers &= ~mask;
   1041 	}
   1042 }
   1043 
   1044 static int
   1045 internal_command(sc, type, ksym)
   1046 	struct wskbd_softc *sc;
   1047 	u_int *type;
   1048 	keysym_t ksym;
   1049 {
   1050 	switch (ksym) {
   1051 	case KS_Cmd:
   1052 		update_modifier(sc->id, *type, 0, MOD_COMMAND);
   1053 		break;
   1054 
   1055 	case KS_Cmd1:
   1056 		update_modifier(sc->id, *type, 0, MOD_COMMAND1);
   1057 		break;
   1058 
   1059 	case KS_Cmd2:
   1060 		update_modifier(sc->id, *type, 0, MOD_COMMAND2);
   1061 		break;
   1062 	}
   1063 
   1064 	if (*type != WSCONS_EVENT_KEY_DOWN ||
   1065 	    (! MOD_ONESET(sc->id, MOD_COMMAND) &&
   1066 	     ! MOD_ALLSET(sc->id, MOD_COMMAND1 | MOD_COMMAND2)))
   1067 		return (0);
   1068 
   1069 	switch (ksym) {
   1070 #ifdef DDB
   1071 	case KS_Cmd_Debugger:
   1072 		if (sc->sc_isconsole)
   1073 			console_debugger();
   1074 		/* discard this key (ddb discarded command modifiers) */
   1075 		*type = WSCONS_EVENT_KEY_UP;
   1076 		return (1);
   1077 #endif
   1078 
   1079 #if NWSDISPLAY > 0
   1080 	case KS_Cmd_Screen0:
   1081 	case KS_Cmd_Screen1:
   1082 	case KS_Cmd_Screen2:
   1083 	case KS_Cmd_Screen3:
   1084 	case KS_Cmd_Screen4:
   1085 	case KS_Cmd_Screen5:
   1086 	case KS_Cmd_Screen6:
   1087 	case KS_Cmd_Screen7:
   1088 	case KS_Cmd_Screen8:
   1089 	case KS_Cmd_Screen9:
   1090 		wsdisplay_switch(sc->sc_displaydv, ksym - KS_Cmd_Screen0, 0);
   1091 		return (1);
   1092 	case KS_Cmd_ResetEmul:
   1093 		wsdisplay_reset(sc->sc_displaydv, WSDISPLAY_RESETEMUL);
   1094 		return (1);
   1095 	case KS_Cmd_ResetClose:
   1096 		wsdisplay_reset(sc->sc_displaydv, WSDISPLAY_RESETCLOSE);
   1097 		return (1);
   1098 #endif
   1099 	}
   1100 	return (0);
   1101 }
   1102 
   1103 static keysym_t
   1104 wskbd_translate(id, type, value)
   1105 	struct wskbd_internal *id;
   1106 	u_int type;
   1107 	int value;
   1108 {
   1109 	struct wskbd_softc *sc = id->t_sc;
   1110 	keysym_t ksym, res, *group;
   1111 	struct wscons_keymap kpbuf, *kp;
   1112 	int iscommand = 0;
   1113 
   1114 	if (type == WSCONS_EVENT_ALL_KEYS_UP) {
   1115 		id->t_modifiers &= ~(MOD_SHIFT_L | MOD_SHIFT_R
   1116 				| MOD_CONTROL_L | MOD_CONTROL_R
   1117 				| MOD_META_L | MOD_META_R
   1118 				| MOD_MODESHIFT
   1119 				| MOD_COMMAND | MOD_COMMAND1 | MOD_COMMAND2);
   1120 		update_leds(id);
   1121 		return (KS_voidSymbol);
   1122 	}
   1123 
   1124 	if (sc != NULL) {
   1125 		if (value < 0 || value >= sc->sc_maplen) {
   1126 #ifdef DEBUG
   1127 			printf("wskbd_translate: keycode %d out of range\n",
   1128 			       value);
   1129 #endif
   1130 			return (KS_voidSymbol);
   1131 		}
   1132 		kp = sc->sc_map + value;
   1133 	} else {
   1134 		kp = &kpbuf;
   1135 		wskbd_get_mapentry(id->t_keymap, value, kp);
   1136 	}
   1137 
   1138 	/* if this key has a command, process it first */
   1139 	if (sc != NULL && kp->command != KS_voidSymbol)
   1140 		iscommand = internal_command(sc, &type, kp->command);
   1141 
   1142 	/* Now update modifiers */
   1143 	switch (kp->group1[0]) {
   1144 	case KS_Shift_L:
   1145 		update_modifier(id, type, 0, MOD_SHIFT_L);
   1146 		break;
   1147 
   1148 	case KS_Shift_R:
   1149 		update_modifier(id, type, 0, MOD_SHIFT_R);
   1150 		break;
   1151 
   1152 	case KS_Shift_Lock:
   1153 		update_modifier(id, type, 1, MOD_SHIFTLOCK);
   1154 		break;
   1155 
   1156 	case KS_Caps_Lock:
   1157 		update_modifier(id, type, 1, MOD_CAPSLOCK);
   1158 		break;
   1159 
   1160 	case KS_Control_L:
   1161 		update_modifier(id, type, 0, MOD_CONTROL_L);
   1162 		break;
   1163 
   1164 	case KS_Control_R:
   1165 		update_modifier(id, type, 0, MOD_CONTROL_R);
   1166 		break;
   1167 
   1168 	case KS_Alt_L:
   1169 		update_modifier(id, type, 0, MOD_META_L);
   1170 		break;
   1171 
   1172 	case KS_Alt_R:
   1173 		update_modifier(id, type, 0, MOD_META_R);
   1174 		break;
   1175 
   1176 	case KS_Mode_switch:
   1177 		update_modifier(id, type, 0, MOD_MODESHIFT);
   1178 		break;
   1179 
   1180 	case KS_Num_Lock:
   1181 		update_modifier(id, type, 1, MOD_NUMLOCK);
   1182 		break;
   1183 
   1184 #if NWSDISPLAY > 0
   1185 	case KS_Hold_Screen:
   1186 		if (sc != NULL) {
   1187 			update_modifier(id, type, 1, MOD_HOLDSCREEN);
   1188 			wskbd_holdscreen(sc, id->t_modifiers & MOD_HOLDSCREEN);
   1189 		}
   1190 		break;
   1191 #endif
   1192 	}
   1193 
   1194 	/* If this is a key release or we are in command mode, we are done */
   1195 	if (type != WSCONS_EVENT_KEY_DOWN || iscommand) {
   1196 		update_leds(id);
   1197 		return (KS_voidSymbol);
   1198 	}
   1199 
   1200 	/* Get the keysym */
   1201 	if (id->t_modifiers & MOD_MODESHIFT)
   1202 		group = & kp->group2[0];
   1203 	else
   1204 		group = & kp->group1[0];
   1205 
   1206 	if ((id->t_modifiers & MOD_NUMLOCK) != 0 &&
   1207 	    KS_GROUP(group[1]) == KS_GROUP_Keypad) {
   1208 		if (MOD_ONESET(id, MOD_ANYSHIFT))
   1209 			ksym = group[0];
   1210 		else
   1211 			ksym = group[1];
   1212 	} else if (! MOD_ONESET(id, MOD_ANYSHIFT | MOD_CAPSLOCK)) {
   1213 		ksym = group[0];
   1214 	} else if (MOD_ONESET(id, MOD_CAPSLOCK)) {
   1215 		if (! MOD_ONESET(id, MOD_SHIFT_L | MOD_SHIFT_R))
   1216 			ksym = group[0];
   1217 		else
   1218 			ksym = group[1];
   1219 		if (ksym >= KS_a && ksym <= KS_z)
   1220 			ksym += KS_A - KS_a;
   1221 		else if (ksym >= KS_agrave && ksym <= KS_thorn &&
   1222 			 ksym != KS_division)
   1223 			ksym += KS_Agrave - KS_agrave;
   1224 	} else if (MOD_ONESET(id, MOD_ANYSHIFT)) {
   1225 		ksym = group[1];
   1226 	} else {
   1227 		ksym = group[0];
   1228 	}
   1229 
   1230 	/* Process compose sequence and dead accents */
   1231 	res = KS_voidSymbol;
   1232 
   1233 	switch (KS_GROUP(ksym)) {
   1234 	case KS_GROUP_Ascii:
   1235 	case KS_GROUP_Keypad:
   1236 	case KS_GROUP_Function:
   1237 		res = ksym;
   1238 		break;
   1239 
   1240 	case KS_GROUP_Mod:
   1241 		if (ksym == KS_Multi_key) {
   1242 			update_modifier(id, 1, 0, MOD_COMPOSE);
   1243 			id->t_composelen = 2;
   1244 		}
   1245 		break;
   1246 
   1247 	case KS_GROUP_Dead:
   1248 		if (id->t_composelen == 0) {
   1249 			update_modifier(id, 1, 0, MOD_COMPOSE);
   1250 			id->t_composelen = 1;
   1251 			id->t_composebuf[0] = ksym;
   1252 		} else
   1253 			res = ksym;
   1254 		break;
   1255 	}
   1256 
   1257 	if (res == KS_voidSymbol) {
   1258 		update_leds(id);
   1259 		return (res);
   1260 	}
   1261 
   1262 	if (id->t_composelen > 0) {
   1263 		id->t_composebuf[2 - id->t_composelen] = res;
   1264 		if (--id->t_composelen == 0) {
   1265 			res = wskbd_compose_value(id->t_composebuf);
   1266 			update_modifier(id, 0, 0, MOD_COMPOSE);
   1267 		} else {
   1268 			return (KS_voidSymbol);
   1269 		}
   1270 	}
   1271 
   1272 	update_leds(id);
   1273 
   1274 	/* We are done, return the symbol */
   1275 	if (KS_GROUP(res) == KS_GROUP_Ascii) {
   1276 		if (MOD_ONESET(id, MOD_ANYCONTROL)) {
   1277 			if ((res >= KS_at && res <= KS_z) || res == KS_space)
   1278 				res = res & 0x1f;
   1279 			else if (res == KS_2)
   1280 				res = 0x00;
   1281 			else if (res >= KS_3 && res <= KS_7)
   1282 				res = KS_Escape + (res - KS_3);
   1283 			else if (res == KS_8)
   1284 				res = KS_Delete;
   1285 		}
   1286 		if (MOD_ONESET(id, MOD_ANYMETA))
   1287 			res |= 0x80;
   1288 	}
   1289 
   1290 	return (res);
   1291 }
   1292