summaryrefslogtreecommitdiff
path: root/sys/dev/pckbc/pckbd.c
blob: 46ee6bb19b583e7c8bb5443aadd0c05a5a3d2973 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
/* $OpenBSD: pckbd.c,v 1.13 2007/12/31 17:08:07 miod Exp $ */
/* $NetBSD: pckbd.c,v 1.24 2000/06/05 22:20:57 sommerfeld Exp $ */

/*-
 * Copyright (c) 1998 The NetBSD Foundation, Inc.
 * All rights reserved.
 *
 * This code is derived from software contributed to The NetBSD Foundation
 * by Charles M. Hannum.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 * 3. All advertising materials mentioning features or use of this software
 *    must display the following acknowledgement:
 *        This product includes software developed by the NetBSD
 *        Foundation, Inc. and its contributors.
 * 4. Neither the name of The NetBSD Foundation nor the names of its
 *    contributors may be used to endorse or promote products derived
 *    from this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
 * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
 * POSSIBILITY OF SUCH DAMAGE.
 */

/*-
 * Copyright (c) 1990 The Regents of the University of California.
 * All rights reserved.
 *
 * This code is derived from software contributed to Berkeley by
 * William Jolitz and Don Ahn.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 * 3. Neither the name of the University nor the names of its contributors
 *    may be used to endorse or promote products derived from this software
 *    without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 * SUCH DAMAGE.
 *
 *	@(#)pccons.c	5.11 (Berkeley) 5/21/91
 */

/*
 * code to work keyboard for PC-style console
 */

#include <sys/param.h>
#include <sys/systm.h>
#include <sys/device.h>
#include <sys/malloc.h>
#include <sys/ioctl.h>

#include <machine/bus.h>

#include <dev/ic/pckbcvar.h>
#include <dev/pckbc/pckbdreg.h>
#include <dev/pckbc/pckbdvar.h>
#include <dev/pckbc/wskbdmap_mfii.h>

#include <dev/wscons/wsconsio.h>
#include <dev/wscons/wskbdvar.h>
#include <dev/wscons/wsksymdef.h>
#include <dev/wscons/wsksymvar.h>

#if defined(__i386__) || defined(__alpha__)
#include <sys/kernel.h> /* XXX for hz */
#endif

struct pckbd_internal {
	int t_isconsole;
	pckbc_tag_t t_kbctag;
	pckbc_slot_t t_kbcslot;

	int t_lastchar;
	int t_extended;
	int t_extended1;

	struct pckbd_softc *t_sc; /* back pointer */
};

struct pckbd_softc {
        struct  device sc_dev;

	struct pckbd_internal *id;
	int sc_enabled;

	int sc_ledstate;

	struct device *sc_wskbddev;
#ifdef WSDISPLAY_COMPAT_RAWKBD
	int	rawkbd;
	u_int	sc_rawcnt;
	char	sc_rawbuf[3];
#endif
};

static int pckbd_is_console(pckbc_tag_t, pckbc_slot_t);

int pckbdprobe(struct device *, void *, void *);
void pckbdattach(struct device *, struct device *, void *);

struct cfattach pckbd_ca = {
	sizeof(struct pckbd_softc), pckbdprobe, pckbdattach,
};

int	pckbd_enable(void *, int);
void	pckbd_set_leds(void *, int);
int	pckbd_ioctl(void *, u_long, caddr_t, int, struct proc *);

const struct wskbd_accessops pckbd_accessops = {
	pckbd_enable,
	pckbd_set_leds,
	pckbd_ioctl,
};

void	pckbd_cngetc(void *, u_int *, int *);
void	pckbd_cnpollc(void *, int);
void	pckbd_cnbell(void *, u_int, u_int, u_int);

const struct wskbd_consops pckbd_consops = {
	pckbd_cngetc,
	pckbd_cnpollc,
	pckbd_cnbell,
};

const struct wskbd_mapdata pckbd_keymapdata = {
	pckbd_keydesctab,
#ifdef PCKBD_LAYOUT
	PCKBD_LAYOUT,
#else
	KB_US,
#endif
};

/*
 * Hackish support for a bell on the PC Keyboard; when a suitable feeper
 * is found, it attaches itself into the pckbd driver here.
 */
void	(*pckbd_bell_fn)(void *, u_int, u_int, u_int, int);
void	*pckbd_bell_fn_arg;

void	pckbd_bell(u_int, u_int, u_int, int);

int	pckbd_set_xtscancode(pckbc_tag_t, pckbc_slot_t);
int	pckbd_init(struct pckbd_internal *, pckbc_tag_t, pckbc_slot_t,
			int);
void	pckbd_input(void *, int);

static int	pckbd_decode(struct pckbd_internal *, int,
				  u_int *, int *);
static int	pckbd_led_encode(int);
static int	pckbd_led_decode(int);

struct pckbd_internal pckbd_consdata;

int
pckbd_set_xtscancode(kbctag, kbcslot)
	pckbc_tag_t kbctag;
	pckbc_slot_t kbcslot;
{
	/* default to have the 8042 translate the keyboard with table 3. */
	int table = 3;

	if (!pckbc_xt_translation(kbctag, kbcslot, 1)) {
#ifdef DEBUG
		printf("pckbd: enabling of translation failed\n");
#endif
		/* just set the basic XT table and hope it works. */
		table = 1;
	}

	/* keep falling back until we hit a table that looks usable. */
	for (; table >= 1; table--) {
		u_char cmd[2];
#ifdef DEBUG
		printf("pckbd: trying table %d\n", table);
#endif
		cmd[0] = KBC_SETTABLE;
		cmd[1] = table;
		if (pckbc_poll_cmd(kbctag, kbcslot, cmd, 2, 0, NULL, 0)) {
#ifdef DEBUG
			printf("pckbd: table set of %d failed\n", table);
#endif
			if (table > 1) {
				cmd[0] = KBC_RESET;
				(void)pckbc_poll_cmd(kbctag, kbcslot, cmd,
				    1, 1, NULL, 1);
				pckbc_flush(kbctag, kbcslot);

				continue;
			}
		}

		/*
		 * the 8042 took the table set request, however, not all that
		 * report they can work with table 3 actually work, so ask what
		 * table it reports it's in.
		 */
		if (table == 3) {
			u_char resp[1];

			cmd[0] = KBC_SETTABLE;
			cmd[1] = 0;
			if (pckbc_poll_cmd(kbctag, kbcslot, cmd, 2, 1, resp, 0)) {
				/*
				 * query failed, step down to table 2 to be
				 * safe.
				 */
#ifdef DEBUG
				printf("pckbd: table 3 verification failed\n");
#endif
				continue;
			} else if (resp[0] == 3) {
#ifdef DEBUG
				printf("pckbd: settling on table 3\n");
#endif
				return (0);
			}
#ifdef DEBUG
			else
				printf("pckbd: table \"%x\" != 3, trying 2\n",
					resp[0]);
#endif
		} else {
#ifdef DEBUG
			printf("pckbd: settling on table %d\n", table);
#endif
			return (0);
		}
	}

	return (1);
}

static int
pckbd_is_console(tag, slot)
	pckbc_tag_t tag;
	pckbc_slot_t slot;
{
	return (pckbd_consdata.t_isconsole &&
		(tag == pckbd_consdata.t_kbctag) &&
		(slot == pckbd_consdata.t_kbcslot));
}

/*
 * these are both bad jokes
 */
int
pckbdprobe(parent, match, aux)
	struct device *parent;
	void *match;
	void *aux;
{
	struct cfdata *cf = match;
	struct pckbc_attach_args *pa = aux;
	u_char cmd[1], resp[1];
	int res;

	/*
	 * XXX There are rumours that a keyboard can be connected
	 * to the aux port as well. For me, this didn't work.
	 * For further experiments, allow it if explicitly
	 * wired in the config file.
	 */
	if ((pa->pa_slot != PCKBC_KBD_SLOT) &&
	    (cf->cf_loc[PCKBCCF_SLOT] == PCKBCCF_SLOT_DEFAULT))
		return (0);

	/* Flush any garbage. */
	pckbc_flush(pa->pa_tag, pa->pa_slot);

	/* Reset the keyboard. */
	cmd[0] = KBC_RESET;
	res = pckbc_poll_cmd(pa->pa_tag, pa->pa_slot, cmd, 1, 1, resp, 1);
	if (res) {
#ifdef DEBUG
		printf("pckbdprobe: reset error %d\n", res);
#endif
		/*
		 * There is probably no keyboard connected.
		 * Let the probe succeed if the keyboard is used
		 * as console input - it can be connected later.
		 */
		return (pckbd_is_console(pa->pa_tag, pa->pa_slot) ? 1 : 0);
	}
	if (resp[0] != KBR_RSTDONE) {
		printf("pckbdprobe: reset response 0x%x\n", resp[0]);
		return (0);
	}

	/*
	 * Some keyboards seem to leave a second ack byte after the reset.
	 * This is kind of stupid, but we account for them anyway by just
	 * flushing the buffer.
	 */
	pckbc_flush(pa->pa_tag, pa->pa_slot);

	if (pckbd_set_xtscancode(pa->pa_tag, pa->pa_slot))
		return (0);

	return (2);
}

void
pckbdattach(parent, self, aux)
	struct device *parent, *self;
	void *aux;
{
	struct pckbd_softc *sc = (void *)self;
	struct pckbc_attach_args *pa = aux;
	int isconsole;
	struct wskbddev_attach_args a;
	u_char cmd[1];

	printf("\n");

	isconsole = pckbd_is_console(pa->pa_tag, pa->pa_slot);

	if (isconsole) {
		sc->id = &pckbd_consdata;
		/*
		 * Some keyboards are not enabled after a reset,
		 * so make sure it is enabled now.
		 */
		cmd[0] = KBC_ENABLE;
		(void) pckbc_poll_cmd(sc->id->t_kbctag, sc->id->t_kbcslot,
		    cmd, 1, 0, NULL, 0);
		sc->sc_enabled = 1;
	} else {
		sc->id = malloc(sizeof(struct pckbd_internal),
				M_DEVBUF, M_WAITOK);
		(void) pckbd_init(sc->id, pa->pa_tag, pa->pa_slot, 0);

		/* no interrupts until enabled */
		cmd[0] = KBC_DISABLE;
		(void) pckbc_poll_cmd(sc->id->t_kbctag, sc->id->t_kbcslot,
				      cmd, 1, 0, NULL, 0);
		sc->sc_enabled = 0;
	}

	sc->id->t_sc = sc;

	pckbc_set_inputhandler(sc->id->t_kbctag, sc->id->t_kbcslot,
			       pckbd_input, sc, sc->sc_dev.dv_xname);

	a.console = isconsole;

	a.keymap = &pckbd_keymapdata;

	a.accessops = &pckbd_accessops;
	a.accesscookie = sc;

	/*
	 * Attach the wskbd, saving a handle to it.
	 * XXX XXX XXX
	 */
	sc->sc_wskbddev = config_found(self, &a, wskbddevprint);
}

int
pckbd_enable(v, on)
	void *v;
	int on;
{
	struct pckbd_softc *sc = v;
	u_char cmd[1];
	int res;

	if (on) {
		if (sc->sc_enabled)
			return (EBUSY);

		pckbc_slot_enable(sc->id->t_kbctag, sc->id->t_kbcslot, 1);

		cmd[0] = KBC_ENABLE;
		res = pckbc_poll_cmd(sc->id->t_kbctag, sc->id->t_kbcslot,
					cmd, 1, 0, NULL, 0);
		if (res) {
			printf("pckbd_enable: command error\n");
			return (res);
		}

		res = pckbd_set_xtscancode(sc->id->t_kbctag,
					   sc->id->t_kbcslot);
		if (res)
			return (res);

		sc->sc_enabled = 1;
	} else {
		if (sc->id->t_isconsole)
			return (EBUSY);

		cmd[0] = KBC_DISABLE;
		res = pckbc_enqueue_cmd(sc->id->t_kbctag, sc->id->t_kbcslot,
					cmd, 1, 0, 1, 0);
		if (res) {
			printf("pckbd_disable: command error\n");
			return (res);
		}

		pckbc_slot_enable(sc->id->t_kbctag, sc->id->t_kbcslot, 0);

		sc->sc_enabled = 0;
	}

	return (0);
}

static int
pckbd_decode(id, datain, type, dataout)
	struct pckbd_internal *id;
	int datain;
	u_int *type;
	int *dataout;
{
	int key;

	if (datain == KBR_EXTENDED0) {
		id->t_extended = 1;
		return(0);
	} else if (datain == KBR_EXTENDED1) {
		id->t_extended1 = 2;
		return(0);
	}

 	/* map extended keys to (unused) codes 128-254 */
	key = (datain & 0x7f) | (id->t_extended ? 0x80 : 0);
	id->t_extended = 0;

	/*
	 * process BREAK key (EXT1 1D 45  EXT1 9D C5):
	 * map to (unused) code 7F
	 */
	if (id->t_extended1 == 2 && (datain == 0x1d || datain == 0x9d)) {
		id->t_extended1 = 1;
		return(0);
	} else if (id->t_extended1 == 1 &&
		   (datain == 0x45 || datain == 0xc5)) {
		id->t_extended1 = 0;
		key = 0x7f;
	} else if (id->t_extended1 > 0) {
		id->t_extended1 = 0;
	}

	if (datain & 0x80) {
		id->t_lastchar = 0;
		*type = WSCONS_EVENT_KEY_UP;
	} else {
		/* Always ignore typematic keys */
		if (key == id->t_lastchar)
			return(0);
		id->t_lastchar = key;
		*type = WSCONS_EVENT_KEY_DOWN;
	}

	*dataout = key;
	return(1);
}

int
pckbd_init(t, kbctag, kbcslot, console)
	struct pckbd_internal *t;
	pckbc_tag_t kbctag;
	pckbc_slot_t kbcslot;
	int console;
{
	bzero(t, sizeof(struct pckbd_internal));

	t->t_isconsole = console;
	t->t_kbctag = kbctag;
	t->t_kbcslot = kbcslot;

	return (pckbd_set_xtscancode(kbctag, kbcslot));
}

static int
pckbd_led_encode(led)
	int led;
{
	int res;

	res = 0;

	if (led & WSKBD_LED_SCROLL)
		res |= 0x01;
	if (led & WSKBD_LED_NUM)
		res |= 0x02;
	if (led & WSKBD_LED_CAPS)
		res |= 0x04;
	return(res);
}

static int
pckbd_led_decode(led)
	int led;
{
	int res;

	res = 0;
	if (led & 0x01)
		res |= WSKBD_LED_SCROLL;
	if (led & 0x02)
		res |= WSKBD_LED_NUM;
	if (led & 0x04)
		res |= WSKBD_LED_CAPS;
	return(res);
}

void
pckbd_set_leds(v, leds)
	void *v;
	int leds;
{
	struct pckbd_softc *sc = v;
	u_char cmd[2];

	cmd[0] = KBC_MODEIND;
	cmd[1] = pckbd_led_encode(leds);
	sc->sc_ledstate = cmd[1];

	(void) pckbc_enqueue_cmd(sc->id->t_kbctag, sc->id->t_kbcslot,
				 cmd, 2, 0, 0, 0);
}

/*
 * Got a console receive interrupt -
 * the console processor wants to give us a character.
 */
void
pckbd_input(vsc, data)
	void *vsc;
	int data;
{
	struct pckbd_softc *sc = vsc;
	int rc, type, key;

	rc = pckbd_decode(sc->id, data, &type, &key);

#ifdef WSDISPLAY_COMPAT_RAWKBD
	if (sc->rawkbd) {
		sc->sc_rawbuf[sc->sc_rawcnt++] = (char)data;

		if (rc != 0 || sc->sc_rawcnt == sizeof(sc->sc_rawbuf)) {
			wskbd_rawinput(sc->sc_wskbddev, sc->sc_rawbuf,
			    sc->sc_rawcnt);
			sc->sc_rawcnt = 0;
		}

		/*
		 * Pass audio keys to wskbd_input anyway.
		 */
		if (rc == 0 || (key != 160 && key != 174 && key != 176))
			return;
	}
#endif
	if (rc != 0)
		wskbd_input(sc->sc_wskbddev, type, key);
}

int
pckbd_ioctl(v, cmd, data, flag, p)
	void *v;
	u_long cmd;
	caddr_t data;
	int flag;
	struct proc *p;
{
	struct pckbd_softc *sc = v;

	switch (cmd) {
	    case WSKBDIO_GTYPE:
		*(int *)data = WSKBD_TYPE_PC_XT;
		return 0;
	    case WSKBDIO_SETLEDS: {
		char cmd[2];
		int res;
		cmd[0] = KBC_MODEIND;
		cmd[1] = pckbd_led_encode(*(int *)data);
		sc->sc_ledstate = cmd[1];
		res = pckbc_enqueue_cmd(sc->id->t_kbctag, sc->id->t_kbcslot,
					cmd, 2, 0, 1, 0);
		return (res);
		}
	    case WSKBDIO_GETLEDS:
		*(int *)data = pckbd_led_decode(sc->sc_ledstate);
		return (0);
	    case WSKBDIO_COMPLEXBELL:
#define d ((struct wskbd_bell_data *)data)
		/*
		 * Keyboard can't beep directly; we have an
		 * externally-provided global hook to do this.
		 */
		pckbd_bell(d->pitch, d->period, d->volume, 0);
#undef d
		return (0);
#ifdef WSDISPLAY_COMPAT_RAWKBD
	    case WSKBDIO_SETMODE:
		sc->rawkbd = (*(int *)data == WSKBD_RAW);
		return (0);
#endif
	}
	return -1;
}

void
pckbd_bell(pitch, period, volume, poll)
	u_int pitch, period, volume;
	int poll;
{

	if (pckbd_bell_fn != NULL)
		(*pckbd_bell_fn)(pckbd_bell_fn_arg, pitch, period,
		    volume, poll);
}

void
pckbd_hookup_bell(fn, arg)
	void (*fn)(void *, u_int, u_int, u_int, int);
	void *arg;
{

	if (pckbd_bell_fn == NULL) {
		pckbd_bell_fn = fn;
		pckbd_bell_fn_arg = arg;
	}
}

int
pckbd_cnattach(kbctag, kbcslot)
	pckbc_tag_t kbctag;
	int kbcslot;
{
	char cmd[1];
	int res;

	res = pckbd_init(&pckbd_consdata, kbctag, kbcslot, 1);
#if 0 /* we allow the console to be attached if no keyboard is present */
	if (res)
		return (res);
#endif

	/* Just to be sure. */
	cmd[0] = KBC_ENABLE;
	res = pckbc_poll_cmd(kbctag, kbcslot, cmd, 1, 0, NULL, 0);
#if 0
	if (res)
		return (res);
#endif

	wskbd_cnattach(&pckbd_consops, &pckbd_consdata, &pckbd_keymapdata);

	return (0);
}

/* ARGSUSED */
void
pckbd_cngetc(v, type, data)
	void *v;
	u_int *type;
	int *data;
{
        struct pckbd_internal *t = v;
	int val;

	for (;;) {
		val = pckbc_poll_data(t->t_kbctag, t->t_kbcslot);
		if ((val != -1) && pckbd_decode(t, val, type, data))
			return;
	}
}

void
pckbd_cnpollc(v, on)
	void *v;
        int on;
{
	struct pckbd_internal *t = v;

	pckbc_set_poll(t->t_kbctag, t->t_kbcslot, on);
}

void
pckbd_cnbell(v, pitch, period, volume)
	void *v;
	u_int pitch, period, volume;
{

	pckbd_bell(pitch, period, volume, 1);
}

struct cfdriver pckbd_cd = {
	NULL, "pckbd", DV_DULL
};