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wskbd.c revision 1.24
      1 /* $NetBSD: wskbd.c,v 1.24 1999/06/30 06:21:21 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 1.24 1999/06/30 06:21:21 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 };
    209 
    210 extern struct cfdriver wskbd_cd;
    211 
    212 #ifndef WSKBD_DEFAULT_BELL_PITCH
    213 #define	WSKBD_DEFAULT_BELL_PITCH	1500	/* 1500Hz */
    214 #endif
    215 #ifndef WSKBD_DEFAULT_BELL_PERIOD
    216 #define	WSKBD_DEFAULT_BELL_PERIOD	100	/* 100ms */
    217 #endif
    218 #ifndef WSKBD_DEFAULT_BELL_VOLUME
    219 #define	WSKBD_DEFAULT_BELL_VOLUME	50	/* 50% volume */
    220 #endif
    221 
    222 struct wskbd_bell_data wskbd_default_bell_data = {
    223 	WSKBD_BELL_DOALL,
    224 	WSKBD_DEFAULT_BELL_PITCH,
    225 	WSKBD_DEFAULT_BELL_PERIOD,
    226 	WSKBD_DEFAULT_BELL_VOLUME,
    227 };
    228 
    229 #ifndef WSKBD_DEFAULT_KEYREPEAT_DEL1
    230 #define	WSKBD_DEFAULT_KEYREPEAT_DEL1	400	/* 400ms to start repeating */
    231 #endif
    232 #ifndef WSKBD_DEFAULT_KEYREPEAT_DELN
    233 #define	WSKBD_DEFAULT_KEYREPEAT_DELN	100	/* 100ms to between repeats */
    234 #endif
    235 
    236 struct wskbd_keyrepeat_data wskbd_default_keyrepeat_data = {
    237 	WSKBD_KEYREPEAT_DOALL,
    238 	WSKBD_DEFAULT_KEYREPEAT_DEL1,
    239 	WSKBD_DEFAULT_KEYREPEAT_DELN,
    240 };
    241 
    242 cdev_decl(wskbd);
    243 
    244 #if NWSDISPLAY > 0
    245 static void wskbd_repeat __P((void *v));
    246 #endif
    247 
    248 static int wskbd_console_initted;
    249 static struct wskbd_softc *wskbd_console_device;
    250 static struct wskbd_internal wskbd_console_data;
    251 
    252 /*
    253  * Print function (for parent devices).
    254  */
    255 int
    256 wskbddevprint(aux, pnp)
    257 	void *aux;
    258 	const char *pnp;
    259 {
    260 #if 0
    261 	struct wskbddev_attach_args *ap = aux;
    262 #endif
    263 
    264 	if (pnp)
    265 		printf("wskbd at %s", pnp);
    266 #if 0
    267 	printf(" console %d", ap->console);
    268 #endif
    269 
    270 	return (UNCONF);
    271 }
    272 
    273 int
    274 wskbd_match(parent, match, aux)
    275 	struct device *parent;
    276 	struct cfdata *match;
    277 	void *aux;
    278 {
    279 	struct wskbddev_attach_args *ap = aux;
    280 
    281 	if (match->wskbddevcf_console != WSKBDDEVCF_CONSOLE_UNK) {
    282 		/*
    283 		 * If console-ness of device specified, either match
    284 		 * exactly (at high priority), or fail.
    285 		 */
    286 		if (match->wskbddevcf_console != 0 && ap->console != 0)
    287 			return (10);
    288 		else
    289 			return (0);
    290 	}
    291 
    292 	/* If console-ness unspecified, it wins. */
    293 	return (1);
    294 }
    295 
    296 void
    297 wskbd_attach(parent, self, aux)
    298 	struct device *parent, *self;
    299 	void *aux;
    300 {
    301 	struct wskbd_softc *sc = (struct wskbd_softc *)self;
    302 	struct wskbddev_attach_args *ap = aux;
    303 
    304 #if NWSDISPLAY > 0
    305 	sc->sc_displaydv = NULL;
    306 #endif
    307 	sc->sc_isconsole = ap->console;
    308 
    309 	if (ap->console) {
    310 		KASSERT(wskbd_console_initted);
    311 		KASSERT(wskbd_console_device == NULL);
    312 
    313 		wskbd_console_device = sc;
    314 
    315 		printf(": console keyboard");
    316 
    317 #if NWSDISPLAY > 0
    318 		if ((sc->sc_displaydv = wsdisplay_set_console_kbd(self)))
    319 			printf(", using %s", sc->sc_displaydv->dv_xname);
    320 #endif
    321 	}
    322 	printf("\n");
    323 
    324 	if (ap->console) {
    325 		sc->id = &wskbd_console_data;
    326 	} else {
    327 		sc->id = malloc(sizeof(struct wskbd_internal),
    328 				M_DEVBUF, M_WAITOK);
    329 		sc->id->t_keymap = ap->keymap;
    330 		sc->id->t_modifiers = 0;
    331 	}
    332 
    333 	sc->id->t_sc = sc;
    334 
    335 	sc->sc_accessops = ap->accessops;
    336 	sc->sc_accesscookie = ap->accesscookie;
    337 	sc->sc_ready = 0;				/* sanity */
    338 	sc->sc_repeating = 0;
    339 	sc->sc_translating = 1;
    340 	sc->sc_ledstate = -1; /* force update */
    341 
    342 	if (wskbd_load_keymap(sc->id->t_keymap,
    343 			      &sc->sc_map, &sc->sc_maplen) != 0)
    344 		panic("cannot load keymap");
    345 
    346 	sc->sc_layout = sc->id->t_keymap->layout;
    347 
    348 	/* set default bell and key repeat data */
    349 	sc->sc_bell_data = wskbd_default_bell_data;
    350 	sc->sc_keyrepeat_data = wskbd_default_keyrepeat_data;
    351 }
    352 
    353 void
    354 wskbd_cnattach(consops, conscookie, mapdata)
    355 	const struct wskbd_consops *consops;
    356 	void *conscookie;
    357 	const struct wskbd_mapdata *mapdata;
    358 {
    359 
    360 	KASSERT(!wskbd_console_initted);
    361 
    362 	wskbd_console_data.t_keymap = mapdata;
    363 
    364 	wskbd_console_data.t_consops = consops;
    365 	wskbd_console_data.t_consaccesscookie = conscookie;
    366 
    367 #if NWSDISPLAY > 0
    368 	wsdisplay_set_cons_kbd(wskbd_cngetc, wskbd_cnpollc);
    369 #endif
    370 
    371 	wskbd_console_initted = 1;
    372 }
    373 
    374 #if NWSDISPLAY > 0
    375 static void
    376 wskbd_repeat(v)
    377 	void *v;
    378 {
    379 	struct wskbd_softc *sc = (struct wskbd_softc *)v;
    380 	int s = spltty();
    381 
    382 	if (!sc->sc_repeating) {
    383 		/*
    384 		 * race condition: a "key up" event came in when wskbd_repeat()
    385 		 * was already called but not yet spltty()'d
    386 		 */
    387 		splx(s);
    388 		return;
    389 	}
    390 	if (sc->sc_displaydv != NULL)
    391 		wsdisplay_kbdinput(sc->sc_displaydv, sc->sc_repeatsym);
    392 	timeout(wskbd_repeat, sc,
    393 		(hz * sc->sc_keyrepeat_data.delN) / 1000);
    394 	splx(s);
    395 }
    396 #endif
    397 
    398 int
    399 wskbd_activate(self, act)
    400 	struct device *self;
    401 	enum devact act;
    402 {
    403 	/* XXX should we do something more? */
    404 	return (0);
    405 }
    406 
    407 /*
    408  * Detach a keyboard.  To keep track of users of the softc we keep
    409  * a reference count that's incremented while inside, e.g., read.
    410  * If the mouse is active and the reference count is > 0 (0 is the
    411  * normal state) we post an event and then wait for the process
    412  * that had the reference to wake us up again.  Then we blow away the
    413  * vnode and return (which will deallocate the softc).
    414  * XXX what should we do if we are connected to a display?
    415  */
    416 int
    417 wskbd_detach(self, flags)
    418 	struct device  *self;
    419 	int flags;
    420 {
    421 	struct wskbd_softc *sc = (struct wskbd_softc *)self;
    422 	struct wseventvar *evar;
    423 	int maj, mn;
    424 	int s;
    425 
    426 	evar = &sc->sc_events;
    427 	if (evar->io) {
    428 		s = spltty();
    429 		if (--sc->sc_refcnt >= 0) {
    430 			/* Wake everyone by generating a dummy event. */
    431 			if (++evar->put >= WSEVENT_QSIZE)
    432 				evar->put = 0;
    433 			WSEVENT_WAKEUP(evar);
    434 			/* Wait for processes to go away. */
    435 			if (tsleep(sc, PZERO, "wskdet", hz * 60))
    436 				printf("wskbd_detach: %s didn't detach\n",
    437 				       sc->sc_dv.dv_xname);
    438 		}
    439 		splx(s);
    440 	}
    441 
    442 	/* locate the major number */
    443 	for (maj = 0; maj < nchrdev; maj++)
    444 		if (cdevsw[maj].d_open == wskbdopen)
    445 			break;
    446 
    447 	/* Nuke the vnodes for any open instances. */
    448 	mn = self->dv_unit;
    449 	vdevgone(maj, mn, mn, VCHR);
    450 
    451 	return (0);
    452 }
    453 
    454 void
    455 wskbd_input(dev, type, value)
    456 	struct device *dev;
    457 	u_int type;
    458 	int value;
    459 {
    460 	struct wskbd_softc *sc = (struct wskbd_softc *)dev;
    461 	struct wscons_event *ev;
    462 	struct wseventvar *evar;
    463 	struct timeval xxxtime;
    464 #if NWSDISPLAY > 0
    465 	keysym_t ks;
    466 #endif
    467 	int put;
    468 
    469 #if NWSDISPLAY > 0
    470 	if (sc->sc_repeating) {
    471 		sc->sc_repeating = 0;
    472 		untimeout(wskbd_repeat, sc);
    473 	}
    474 
    475 	/*
    476 	 * If /dev/wskbd is not connected in event mode translate and
    477 	 * send upstream.
    478 	 */
    479 	if (sc->sc_translating) {
    480 		ks = wskbd_translate(sc->id, type, value);
    481 		if (ks != KS_voidSymbol) {
    482 			sc->sc_repeatsym = ks;
    483 			if (sc->sc_displaydv != NULL)
    484 				wsdisplay_kbdinput(sc->sc_displaydv,
    485 						   sc->sc_repeatsym);
    486 
    487 			sc->sc_repeating = 1;
    488 			timeout(wskbd_repeat, sc,
    489 				(hz * sc->sc_keyrepeat_data.del1) / 1000);
    490 		}
    491 		return;
    492 	}
    493 #endif
    494 
    495 	/*
    496 	 * Keyboard is generating events.  Turn this keystroke into an
    497 	 * event and put it in the queue.  If the queue is full, the
    498 	 * keystroke is lost (sorry!).
    499 	 */
    500 
    501 	/* no one to receive; punt!*/
    502 	if (!sc->sc_ready)
    503 		return;
    504 
    505 	evar = &sc->sc_events;
    506 
    507 	put = evar->put;
    508 	ev = &evar->q[put];
    509 	put = (put + 1) % WSEVENT_QSIZE;
    510 	if (put == evar->get) {
    511 		log(LOG_WARNING, "%s: event queue overflow\n",
    512 		    sc->sc_dv.dv_xname);
    513 		return;
    514 	}
    515 	ev->type = type;
    516 	ev->value = value;
    517 	microtime(&xxxtime);
    518 	TIMEVAL_TO_TIMESPEC(&xxxtime, &ev->time);
    519 	evar->put = put;
    520 	WSEVENT_WAKEUP(evar);
    521 }
    522 
    523 #ifdef WSDISPLAY_COMPAT_RAWKBD
    524 void
    525 wskbd_rawinput(dev, buf, len)
    526 	struct device *dev;
    527 	char *buf;
    528 	int len;
    529 {
    530 #if NWSDISPLAY > 0
    531 	struct wskbd_softc *sc = (struct wskbd_softc *)dev;
    532 	int i;
    533 
    534 	for (i = 0; i < len; i++)
    535 		wsdisplay_kbdinput(sc->sc_displaydv, buf[i]);
    536 	/* this is KS_GROUP_Ascii */
    537 #endif
    538 }
    539 #endif /* WSDISPLAY_COMPAT_RAWKBD */
    540 
    541 #if NWSDISPLAY > 0
    542 static void
    543 wskbd_holdscreen(sc, hold)
    544 	struct wskbd_softc *sc;
    545 	int hold;
    546 {
    547 	int new_state;
    548 
    549 	if (sc->sc_displaydv != NULL) {
    550 		wsdisplay_kbdholdscreen(sc->sc_displaydv, hold);
    551 		new_state = sc->sc_ledstate;
    552 		if (hold)
    553 			new_state |= WSKBD_LED_SCROLL;
    554 		else
    555 			new_state &= ~WSKBD_LED_SCROLL;
    556 		if (new_state != sc->sc_ledstate) {
    557 			(*sc->sc_accessops->set_leds)(sc->sc_accesscookie,
    558 						      new_state);
    559 			sc->sc_ledstate = new_state;
    560 		}
    561 	}
    562 }
    563 #endif
    564 
    565 static int
    566 wskbd_enable(sc, on)
    567 	struct wskbd_softc *sc;
    568 	int on;
    569 {
    570 	int res;
    571 
    572 	/* XXX reference count? */
    573 	if (!on && (!sc->sc_translating
    574 #if NWSDISPLAY > 0
    575 		    || sc->sc_displaydv
    576 #endif
    577 		))
    578 		return (EBUSY);
    579 
    580 	res = (*sc->sc_accessops->enable)(sc->sc_accesscookie, on);
    581 	return (res);
    582 }
    583 
    584 int
    585 wskbdopen(dev, flags, mode, p)
    586 	dev_t dev;
    587 	int flags, mode;
    588 	struct proc *p;
    589 {
    590 	struct wskbd_softc *sc;
    591 	int unit;
    592 
    593 	unit = minor(dev);
    594 	if (unit >= wskbd_cd.cd_ndevs ||	/* make sure it was attached */
    595 	    (sc = wskbd_cd.cd_devs[unit]) == NULL)
    596 		return (ENXIO);
    597 
    598 	if (sc->sc_dying)
    599 		return (EIO);
    600 
    601 	if (sc->sc_events.io)			/* and that it's not in use */
    602 		return (EBUSY);
    603 
    604 	sc->sc_events.io = p;
    605 	wsevent_init(&sc->sc_events);		/* may cause sleep */
    606 
    607 	sc->sc_translating = 0;
    608 	sc->sc_ready = 1;			/* start accepting events */
    609 
    610 	wskbd_enable(sc, 1);
    611 	return (0);
    612 }
    613 
    614 int
    615 wskbdclose(dev, flags, mode, p)
    616 	dev_t dev;
    617 	int flags, mode;
    618 	struct proc *p;
    619 {
    620 	struct wskbd_softc *sc = wskbd_cd.cd_devs[minor(dev)];
    621 
    622 	sc->sc_ready = 0;			/* stop accepting events */
    623 	sc->sc_translating = 1;
    624 
    625 	wsevent_fini(&sc->sc_events);
    626 	sc->sc_events.io = NULL;
    627 
    628 	wskbd_enable(sc, 0);
    629 	return (0);
    630 }
    631 
    632 int
    633 wskbdread(dev, uio, flags)
    634 	dev_t dev;
    635 	struct uio *uio;
    636 	int flags;
    637 {
    638 	struct wskbd_softc *sc = wskbd_cd.cd_devs[minor(dev)];
    639 	int error;
    640 
    641 	if (sc->sc_dying)
    642 		return (EIO);
    643 
    644 	sc->sc_refcnt++;
    645 	error = wsevent_read(&sc->sc_events, uio, flags);
    646 	if (--sc->sc_refcnt < 0) {
    647 		wakeup(sc);
    648 		error = EIO;
    649 	}
    650 	return (error);
    651 }
    652 
    653 int
    654 wskbdioctl(dev, cmd, data, flag, p)
    655 	dev_t dev;
    656 	u_long cmd;
    657 	caddr_t data;
    658 	int flag;
    659 	struct proc *p;
    660 {
    661 	struct wskbd_softc *sc = wskbd_cd.cd_devs[minor(dev)];
    662 	int error;
    663 
    664 	sc->sc_refcnt++;
    665 	error = wskbd_do_ioctl(sc, cmd, data, flag, p);
    666 	if (--sc->sc_refcnt < 0)
    667 		wakeup(sc);
    668 	return (error);
    669 }
    670 
    671 int
    672 wskbd_do_ioctl(sc, cmd, data, flag, p)
    673 	struct wskbd_softc *sc;
    674 	u_long cmd;
    675 	caddr_t data;
    676 	int flag;
    677 	struct proc *p;
    678 {
    679 	int error;
    680 
    681 	/*
    682 	 * Try the generic ioctls that the wskbd interface supports.
    683 	 */
    684 	switch (cmd) {
    685 	case FIONBIO:		/* we will remove this someday (soon???) */
    686 		return (0);
    687 
    688 	case FIOASYNC:
    689 		sc->sc_events.async = *(int *)data != 0;
    690 		return (0);
    691 
    692 	case TIOCSPGRP:
    693 		if (*(int *)data != sc->sc_events.io->p_pgid)
    694 			return (EPERM);
    695 		return (0);
    696 	}
    697 
    698 	/*
    699 	 * Try the keyboard driver for WSKBDIO ioctls.  It returns -1
    700 	 * if it didn't recognize the request.
    701 	 */
    702 	error = wskbd_displayioctl((struct device *)sc, cmd, data, flag, p);
    703 	return (error != -1 ? error : ENOTTY);
    704 }
    705 
    706 /*
    707  * WSKBDIO ioctls, handled in both emulation mode and in ``raw'' mode.
    708  * Some of these have no real effect in raw mode, however.
    709  */
    710 int
    711 wskbd_displayioctl(dev, cmd, data, flag, p)
    712 	struct device *dev;
    713 	u_long cmd;
    714 	caddr_t data;
    715 	int flag;
    716 	struct proc *p;
    717 {
    718 	struct wskbd_softc *sc = (struct wskbd_softc *)dev;
    719 	struct wskbd_bell_data *ubdp, *kbdp;
    720 	struct wskbd_keyrepeat_data *ukdp, *kkdp;
    721 	struct wskbd_map_data *umdp;
    722 	struct wskbd_mapdata md;
    723 	void *buf;
    724 	int len, error;
    725 
    726 	switch (cmd) {
    727 #define	SETBELL(dstp, srcp, dfltp)					\
    728     do {								\
    729 	(dstp)->pitch = ((srcp)->which & WSKBD_BELL_DOPITCH) ?		\
    730 	    (srcp)->pitch : (dfltp)->pitch;				\
    731 	(dstp)->period = ((srcp)->which & WSKBD_BELL_DOPERIOD) ?	\
    732 	    (srcp)->period : (dfltp)->period;				\
    733 	(dstp)->volume = ((srcp)->which & WSKBD_BELL_DOVOLUME) ?	\
    734 	    (srcp)->volume : (dfltp)->volume;				\
    735 	(dstp)->which = WSKBD_BELL_DOALL;				\
    736     } while (0)
    737 
    738 	case WSKBDIO_BELL:
    739 		if ((flag & FWRITE) == 0)
    740 			return (EACCES);
    741 		return ((*sc->sc_accessops->ioctl)(sc->sc_accesscookie,
    742 		    WSKBDIO_COMPLEXBELL, (caddr_t)&sc->sc_bell_data, flag, p));
    743 
    744 	case WSKBDIO_COMPLEXBELL:
    745 		if ((flag & FWRITE) == 0)
    746 			return (EACCES);
    747 		ubdp = (struct wskbd_bell_data *)data;
    748 		SETBELL(ubdp, ubdp, &sc->sc_bell_data);
    749 		return ((*sc->sc_accessops->ioctl)(sc->sc_accesscookie,
    750 		    WSKBDIO_COMPLEXBELL, (caddr_t)ubdp, flag, p));
    751 
    752 	case WSKBDIO_SETBELL:
    753 		if ((flag & FWRITE) == 0)
    754 			return (EACCES);
    755 		kbdp = &sc->sc_bell_data;
    756 setbell:
    757 		ubdp = (struct wskbd_bell_data *)data;
    758 		SETBELL(kbdp, ubdp, kbdp);
    759 		return (0);
    760 
    761 	case WSKBDIO_GETBELL:
    762 		kbdp = &sc->sc_bell_data;
    763 getbell:
    764 		ubdp = (struct wskbd_bell_data *)data;
    765 		SETBELL(ubdp, kbdp, kbdp);
    766 		return (0);
    767 
    768 	case WSKBDIO_SETDEFAULTBELL:
    769 		if ((error = suser(p->p_ucred, &p->p_acflag)) != 0)
    770 			return (error);
    771 		kbdp = &wskbd_default_bell_data;
    772 		goto setbell;
    773 
    774 
    775 	case WSKBDIO_GETDEFAULTBELL:
    776 		kbdp = &wskbd_default_bell_data;
    777 		goto getbell;
    778 
    779 #undef SETBELL
    780 
    781 #define	SETKEYREPEAT(dstp, srcp, dfltp)					\
    782     do {								\
    783 	(dstp)->del1 = ((srcp)->which & WSKBD_KEYREPEAT_DODEL1) ?	\
    784 	    (srcp)->del1 : (dfltp)->del1;				\
    785 	(dstp)->delN = ((srcp)->which & WSKBD_KEYREPEAT_DODELN) ?	\
    786 	    (srcp)->delN : (dfltp)->delN;				\
    787 	(dstp)->which = WSKBD_KEYREPEAT_DOALL;				\
    788     } while (0)
    789 
    790 	case WSKBDIO_SETKEYREPEAT:
    791 		if ((flag & FWRITE) == 0)
    792 			return (EACCES);
    793 		kkdp = &sc->sc_keyrepeat_data;
    794 setkeyrepeat:
    795 		ukdp = (struct wskbd_keyrepeat_data *)data;
    796 		SETKEYREPEAT(kkdp, ukdp, kkdp);
    797 		return (0);
    798 
    799 	case WSKBDIO_GETKEYREPEAT:
    800 		kkdp = &sc->sc_keyrepeat_data;
    801 getkeyrepeat:
    802 		ukdp = (struct wskbd_keyrepeat_data *)data;
    803 		SETKEYREPEAT(ukdp, kkdp, kkdp);
    804 		return (0);
    805 
    806 	case WSKBDIO_SETDEFAULTKEYREPEAT:
    807 		if ((error = suser(p->p_ucred, &p->p_acflag)) != 0)
    808 			return (error);
    809 		kkdp = &wskbd_default_keyrepeat_data;
    810 		goto setkeyrepeat;
    811 
    812 
    813 	case WSKBDIO_GETDEFAULTKEYREPEAT:
    814 		kkdp = &wskbd_default_keyrepeat_data;
    815 		goto getkeyrepeat;
    816 
    817 #undef SETKEYREPEAT
    818 
    819 	case WSKBDIO_SETMAP:
    820 		if ((flag & FWRITE) == 0)
    821 			return (EACCES);
    822 		umdp = (struct wskbd_map_data *)data;
    823 		len = umdp->maplen*sizeof(struct wscons_keymap);
    824 		buf = malloc(len, M_TEMP, M_WAITOK);
    825 		error = copyin(umdp->map, buf, len);
    826 		if (error == 0) {
    827 			wskbd_init_keymap(umdp->maplen,
    828 					  &sc->sc_map, &sc->sc_maplen);
    829 			memcpy(sc->sc_map, buf, len);
    830 			sc->sc_layout = KB_USER;
    831 		}
    832 		free(buf, M_TEMP);
    833 		return(error);
    834 
    835 	case WSKBDIO_GETMAP:
    836 		umdp = (struct wskbd_map_data *)data;
    837 		if (umdp->maplen > sc->sc_maplen)
    838 			umdp->maplen = sc->sc_maplen;
    839 		error = copyout(sc->sc_map, umdp->map,
    840 				umdp->maplen*sizeof(struct wscons_keymap));
    841 		return(error);
    842 
    843 	case WSKBDIO_GETENCODING:
    844 		*((kbd_t *) data) = sc->sc_layout;
    845 		return(0);
    846 
    847 	case WSKBDIO_SETENCODING:
    848 		if ((flag & FWRITE) == 0)
    849 			return (EACCES);
    850 		md = *(sc->id->t_keymap); /* structure assignment */
    851 		md.layout = *((kbd_t *)data);
    852 		error = wskbd_load_keymap(&md, &sc->sc_map, &sc->sc_maplen);
    853 		if (error == 0)
    854 			sc->sc_layout = *((kbd_t *)data);
    855 		return(error);
    856 	}
    857 
    858 	/*
    859 	 * Try the keyboard driver for WSKBDIO ioctls.  It returns -1
    860 	 * if it didn't recognize the request, and in turn we return
    861 	 * -1 if we didn't recognize the request.
    862 	 */
    863 /* printf("kbdaccess\n"); */
    864 	error = (*sc->sc_accessops->ioctl)(sc->sc_accesscookie, cmd, data,
    865 					   flag, p);
    866 #ifdef WSDISPLAY_COMPAT_RAWKBD
    867 	if (!error && cmd == WSKBDIO_SETMODE && *(int *)data == WSKBD_RAW) {
    868 		int s = spltty();
    869 		sc->id->t_modifiers &= ~(MOD_SHIFT_L | MOD_SHIFT_R
    870 					 | MOD_CONTROL_L | MOD_CONTROL_R
    871 					 | MOD_META_L | MOD_META_R
    872 					 | MOD_COMMAND
    873 					 | MOD_COMMAND1 | MOD_COMMAND2);
    874 		if (sc->sc_repeating) {
    875 			sc->sc_repeating = 0;
    876 			untimeout(wskbd_repeat, sc);
    877 		}
    878 		splx(s);
    879 	}
    880 #endif
    881 	return (error);
    882 }
    883 
    884 int
    885 wskbdpoll(dev, events, p)
    886 	dev_t dev;
    887 	int events;
    888 	struct proc *p;
    889 {
    890 	struct wskbd_softc *sc = wskbd_cd.cd_devs[minor(dev)];
    891 
    892 	return (wsevent_poll(&sc->sc_events, events, p));
    893 }
    894 
    895 #if NWSDISPLAY > 0
    896 
    897 int
    898 wskbd_pickfree()
    899 {
    900 	int i;
    901 	struct wskbd_softc *sc;
    902 
    903 	for (i = 0; i < wskbd_cd.cd_ndevs; i++) {
    904 		if ((sc = wskbd_cd.cd_devs[i]) == NULL)
    905 			continue;
    906 		if (sc->sc_displaydv == NULL)
    907 			return (i);
    908 	}
    909 	return (-1);
    910 }
    911 
    912 int
    913 wskbd_set_display(idx, displaydv, kbddv)
    914 	int idx;
    915 	struct device *displaydv, **kbddv;
    916 {
    917 	struct wskbd_softc *sc;
    918 
    919 	if (idx >= wskbd_cd.cd_ndevs ||	/* make sure it was attached */
    920 	    (sc = wskbd_cd.cd_devs[idx]) == NULL)
    921 		return (ENXIO);
    922 
    923 	if (sc->sc_isconsole)
    924 		return (EBUSY);
    925 	if (displaydv) {
    926 		if (sc->sc_displaydv)
    927 			return (EBUSY);
    928 		printf("%s: connecting to %s\n",
    929 		       sc->sc_dv.dv_xname, displaydv->dv_xname);
    930 	} else {
    931 		if (sc->sc_displaydv == NULL)
    932 			return (ENXIO);
    933 		printf("%s: disconnecting\n", sc->sc_dv.dv_xname);
    934 	}
    935 
    936 	sc->sc_displaydv = displaydv;
    937 	wskbd_enable(sc, displaydv != NULL);
    938 	if (kbddv)
    939 		*kbddv = &sc->sc_dv;
    940 	return (0);
    941 }
    942 
    943 struct device *
    944 wskbd_set_console_display(displaydv)
    945 	struct device *displaydv;
    946 {
    947 	if (!wskbd_console_device)
    948 		return (0);
    949 	wskbd_console_device->sc_displaydv = displaydv;
    950 	return (&wskbd_console_device->sc_dv);
    951 }
    952 
    953 #endif /* NWSDISPLAY > 0 */
    954 
    955 /*
    956  * Console interface.
    957  */
    958 int
    959 wskbd_cngetc(dev)
    960 	dev_t dev;
    961 {
    962 	u_int type;
    963 	int data;
    964 	keysym_t ks;
    965 
    966 	if (!wskbd_console_initted)
    967 		return 0;
    968 
    969 	if (wskbd_console_device != NULL &&
    970 	    !wskbd_console_device->sc_translating)
    971 		return 0;
    972 
    973 	for(;;) {
    974 		(*wskbd_console_data.t_consops->getc)
    975 		    (wskbd_console_data.t_consaccesscookie, &type, &data);
    976 		ks = wskbd_translate(&wskbd_console_data, type, data);
    977 
    978 		if (KS_GROUP(ks) == KS_GROUP_Ascii)
    979 			return (KS_VALUE(ks));
    980 	}
    981 }
    982 
    983 void
    984 wskbd_cnpollc(dev, poll)
    985 	dev_t dev;
    986 	int poll;
    987 {
    988 
    989 	if (!wskbd_console_initted)
    990 		return;
    991 
    992 	if (wskbd_console_device != NULL &&
    993 	    !wskbd_console_device->sc_translating)
    994 		return;
    995 
    996 	(*wskbd_console_data.t_consops->pollc)
    997 	    (wskbd_console_data.t_consaccesscookie, poll);
    998 }
    999 
   1000 static inline void
   1001 update_leds(id)
   1002 	struct wskbd_internal *id;
   1003 {
   1004 	int new_state;
   1005 
   1006 	new_state = 0;
   1007 	if (id->t_modifiers & (MOD_SHIFTLOCK | MOD_CAPSLOCK))
   1008 		new_state |= WSKBD_LED_CAPS;
   1009 	if (id->t_modifiers & MOD_NUMLOCK)
   1010 		new_state |= WSKBD_LED_NUM;
   1011 	if (id->t_modifiers & MOD_COMPOSE)
   1012 		new_state |= WSKBD_LED_COMPOSE;
   1013 	if (id->t_modifiers & MOD_HOLDSCREEN)
   1014 		new_state |= WSKBD_LED_SCROLL;
   1015 
   1016 	if (id->t_sc && new_state != id->t_sc->sc_ledstate) {
   1017 		(*id->t_sc->sc_accessops->set_leds)
   1018 		    (id->t_sc->sc_accesscookie, new_state);
   1019 		id->t_sc->sc_ledstate = new_state;
   1020 	}
   1021 }
   1022 
   1023 static inline void
   1024 update_modifier(id, type, toggle, mask)
   1025 	struct wskbd_internal *id;
   1026 	u_int type;
   1027 	int toggle;
   1028 	int mask;
   1029 {
   1030 	if (toggle) {
   1031 		if (type == WSCONS_EVENT_KEY_DOWN)
   1032 			id->t_modifiers ^= mask;
   1033 	} else {
   1034 		if (type == WSCONS_EVENT_KEY_DOWN)
   1035 			id->t_modifiers |= mask;
   1036 		else
   1037 			id->t_modifiers &= ~mask;
   1038 	}
   1039 }
   1040 
   1041 static int
   1042 internal_command(sc, type, ksym)
   1043 	struct wskbd_softc *sc;
   1044 	u_int *type;
   1045 	keysym_t ksym;
   1046 {
   1047 	switch (ksym) {
   1048 	case KS_Cmd:
   1049 		update_modifier(sc->id, *type, 0, MOD_COMMAND);
   1050 		break;
   1051 
   1052 	case KS_Cmd1:
   1053 		update_modifier(sc->id, *type, 0, MOD_COMMAND1);
   1054 		break;
   1055 
   1056 	case KS_Cmd2:
   1057 		update_modifier(sc->id, *type, 0, MOD_COMMAND2);
   1058 		break;
   1059 	}
   1060 
   1061 	if (*type != WSCONS_EVENT_KEY_DOWN ||
   1062 	    (! MOD_ONESET(sc->id, MOD_COMMAND) &&
   1063 	     ! MOD_ALLSET(sc->id, MOD_COMMAND1 | MOD_COMMAND2)))
   1064 		return (0);
   1065 
   1066 	switch (ksym) {
   1067 #ifdef DDB
   1068 	case KS_Cmd_Debugger:
   1069 		if (sc->sc_isconsole)
   1070 			console_debugger();
   1071 		/* discard this key (ddb discarded command modifiers) */
   1072 		*type = WSCONS_EVENT_KEY_UP;
   1073 		return (1);
   1074 #endif
   1075 
   1076 #if NWSDISPLAY > 0
   1077 	case KS_Cmd_Screen0:
   1078 	case KS_Cmd_Screen1:
   1079 	case KS_Cmd_Screen2:
   1080 	case KS_Cmd_Screen3:
   1081 	case KS_Cmd_Screen4:
   1082 	case KS_Cmd_Screen5:
   1083 	case KS_Cmd_Screen6:
   1084 	case KS_Cmd_Screen7:
   1085 	case KS_Cmd_Screen8:
   1086 	case KS_Cmd_Screen9:
   1087 		wsdisplay_switch(sc->sc_displaydv, ksym - KS_Cmd_Screen0, 0);
   1088 		return (1);
   1089 	case KS_Cmd_ResetEmul:
   1090 		wsdisplay_reset(sc->sc_displaydv, WSDISPLAY_RESETEMUL);
   1091 		return (1);
   1092 	case KS_Cmd_ResetClose:
   1093 		wsdisplay_reset(sc->sc_displaydv, WSDISPLAY_RESETCLOSE);
   1094 		return (1);
   1095 #endif
   1096 	}
   1097 	return (0);
   1098 }
   1099 
   1100 static keysym_t
   1101 wskbd_translate(id, type, value)
   1102 	struct wskbd_internal *id;
   1103 	u_int type;
   1104 	int value;
   1105 {
   1106 	struct wskbd_softc *sc = id->t_sc;
   1107 	keysym_t ksym, res, *group;
   1108 	struct wscons_keymap kpbuf, *kp;
   1109 	int iscommand = 0;
   1110 
   1111 	if (type == WSCONS_EVENT_ALL_KEYS_UP) {
   1112 		id->t_modifiers &= ~(MOD_SHIFT_L | MOD_SHIFT_R
   1113 				| MOD_CONTROL_L | MOD_CONTROL_R
   1114 				| MOD_META_L | MOD_META_R
   1115 				| MOD_MODESHIFT
   1116 				| MOD_COMMAND | MOD_COMMAND1 | MOD_COMMAND2);
   1117 		update_leds(id);
   1118 		return (KS_voidSymbol);
   1119 	}
   1120 
   1121 	if (sc != NULL) {
   1122 		if (value < 0 || value >= sc->sc_maplen) {
   1123 #ifdef DEBUG
   1124 			printf("wskbd_translate: keycode %d out of range\n",
   1125 			       value);
   1126 #endif
   1127 			return (KS_voidSymbol);
   1128 		}
   1129 		kp = sc->sc_map + value;
   1130 	} else {
   1131 		kp = &kpbuf;
   1132 		wskbd_get_mapentry(id->t_keymap, value, kp);
   1133 	}
   1134 
   1135 	/* if this key has a command, process it first */
   1136 	if (sc != NULL && kp->command != KS_voidSymbol)
   1137 		iscommand = internal_command(sc, &type, kp->command);
   1138 
   1139 	/* Now update modifiers */
   1140 	switch (kp->group1[0]) {
   1141 	case KS_Shift_L:
   1142 		update_modifier(id, type, 0, MOD_SHIFT_L);
   1143 		break;
   1144 
   1145 	case KS_Shift_R:
   1146 		update_modifier(id, type, 0, MOD_SHIFT_R);
   1147 		break;
   1148 
   1149 	case KS_Shift_Lock:
   1150 		update_modifier(id, type, 1, MOD_SHIFTLOCK);
   1151 		break;
   1152 
   1153 	case KS_Caps_Lock:
   1154 		update_modifier(id, type, 1, MOD_CAPSLOCK);
   1155 		break;
   1156 
   1157 	case KS_Control_L:
   1158 		update_modifier(id, type, 0, MOD_CONTROL_L);
   1159 		break;
   1160 
   1161 	case KS_Control_R:
   1162 		update_modifier(id, type, 0, MOD_CONTROL_R);
   1163 		break;
   1164 
   1165 	case KS_Alt_L:
   1166 		update_modifier(id, type, 0, MOD_META_L);
   1167 		break;
   1168 
   1169 	case KS_Alt_R:
   1170 		update_modifier(id, type, 0, MOD_META_R);
   1171 		break;
   1172 
   1173 	case KS_Mode_switch:
   1174 		update_modifier(id, type, 0, MOD_MODESHIFT);
   1175 		break;
   1176 
   1177 	case KS_Num_Lock:
   1178 		update_modifier(id, type, 1, MOD_NUMLOCK);
   1179 		break;
   1180 
   1181 #if NWSDISPLAY > 0
   1182 	case KS_Hold_Screen:
   1183 		if (sc != NULL) {
   1184 			update_modifier(id, type, 1, MOD_HOLDSCREEN);
   1185 			wskbd_holdscreen(sc, id->t_modifiers & MOD_HOLDSCREEN);
   1186 		}
   1187 		break;
   1188 #endif
   1189 	}
   1190 
   1191 	/* If this is a key release or we are in command mode, we are done */
   1192 	if (type != WSCONS_EVENT_KEY_DOWN || iscommand) {
   1193 		update_leds(id);
   1194 		return (KS_voidSymbol);
   1195 	}
   1196 
   1197 	/* Get the keysym */
   1198 	if (id->t_modifiers & MOD_MODESHIFT)
   1199 		group = & kp->group2[0];
   1200 	else
   1201 		group = & kp->group1[0];
   1202 
   1203 	if ((id->t_modifiers & MOD_NUMLOCK) != 0 &&
   1204 	    KS_GROUP(group[1]) == KS_GROUP_Keypad) {
   1205 		if (MOD_ONESET(id, MOD_ANYSHIFT))
   1206 			ksym = group[0];
   1207 		else
   1208 			ksym = group[1];
   1209 	} else if (! MOD_ONESET(id, MOD_ANYSHIFT | MOD_CAPSLOCK)) {
   1210 		ksym = group[0];
   1211 	} else if (MOD_ONESET(id, MOD_CAPSLOCK)) {
   1212 		if (! MOD_ONESET(id, MOD_SHIFT_L | MOD_SHIFT_R))
   1213 			ksym = group[0];
   1214 		else
   1215 			ksym = group[1];
   1216 		if (ksym >= KS_a && ksym <= KS_z)
   1217 			ksym += KS_A - KS_a;
   1218 		else if (ksym >= KS_agrave && ksym <= KS_thorn &&
   1219 			 ksym != KS_division)
   1220 			ksym += KS_Agrave - KS_agrave;
   1221 	} else if (MOD_ONESET(id, MOD_ANYSHIFT)) {
   1222 		ksym = group[1];
   1223 	} else {
   1224 		ksym = group[0];
   1225 	}
   1226 
   1227 	/* Process compose sequence and dead accents */
   1228 	res = KS_voidSymbol;
   1229 
   1230 	switch (KS_GROUP(ksym)) {
   1231 	case KS_GROUP_Ascii:
   1232 	case KS_GROUP_Keypad:
   1233 	case KS_GROUP_Function:
   1234 		res = ksym;
   1235 		break;
   1236 
   1237 	case KS_GROUP_Mod:
   1238 		if (ksym == KS_Multi_key) {
   1239 			update_modifier(id, 1, 0, MOD_COMPOSE);
   1240 			id->t_composelen = 2;
   1241 		}
   1242 		break;
   1243 
   1244 	case KS_GROUP_Dead:
   1245 		if (id->t_composelen == 0) {
   1246 			update_modifier(id, 1, 0, MOD_COMPOSE);
   1247 			id->t_composelen = 1;
   1248 			id->t_composebuf[0] = ksym;
   1249 		} else
   1250 			res = ksym;
   1251 		break;
   1252 	}
   1253 
   1254 	if (res == KS_voidSymbol) {
   1255 		update_leds(id);
   1256 		return (res);
   1257 	}
   1258 
   1259 	if (id->t_composelen > 0) {
   1260 		id->t_composebuf[2 - id->t_composelen] = res;
   1261 		if (--id->t_composelen == 0) {
   1262 			res = wskbd_compose_value(id->t_composebuf);
   1263 			update_modifier(id, 0, 0, MOD_COMPOSE);
   1264 		} else {
   1265 			return (KS_voidSymbol);
   1266 		}
   1267 	}
   1268 
   1269 	update_leds(id);
   1270 
   1271 	/* We are done, return the symbol */
   1272 	if (KS_GROUP(res) == KS_GROUP_Ascii) {
   1273 		if (MOD_ONESET(id, MOD_ANYCONTROL)) {
   1274 			if ((res >= KS_at && res <= KS_z) || res == KS_space)
   1275 				res = res & 0x1f;
   1276 			else if (res == KS_2)
   1277 				res = 0x00;
   1278 			else if (res >= KS_3 && res <= KS_7)
   1279 				res = KS_Escape + (res - KS_3);
   1280 			else if (res == KS_8)
   1281 				res = KS_Delete;
   1282 		}
   1283 		if (MOD_ONESET(id, MOD_ANYMETA))
   1284 			res |= 0x80;
   1285 	}
   1286 
   1287 	return (res);
   1288 }
   1289