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
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
822
823
824
825
826
827
828
829
830
831
832
833
834
835
836
837
838
839
840
841
842
843
844
845
846
847
848
849
850
851
852
853
854
855
856
857
858
859
860
861
862
863
864
865
866
867
868
869
870
871
872
873
874
875
876
877
878
879
880
881
882
883
884
885
886
887
888
889
890
891
892
893
894
895
896
897
898
899
900
901
902
903
904
905
906
907
908
909
910
911
912
913
914
915
916
917
918
919
920
921
922
923
924
925
926
927
928
929
930
931
932
933
934
935
936
937
938
939
940
941
942
943
944
945
946
947
948
949
950
951
952
953
954
955
956
957
958
959
960
961
962
963
964
965
966
967
968
969
970
971
972
973
974
975
976
977
978
979
980
981
982
983
984
985
986
987
988
989
990
991
992
993
994
995
996
997
998
999
1000
1001
1002
1003
1004
1005
1006
1007
1008
1009
1010
1011
1012
1013
1014
1015
1016
1017
1018
1019
1020
1021
1022
1023
1024
1025
1026
1027
1028
1029
1030
1031
1032
1033
1034
1035
1036
1037
1038
1039
1040
1041
1042
1043
1044
1045
1046
1047
1048
1049
1050
1051
1052
1053
1054
1055
1056
1057
1058
1059
1060
1061
1062
1063
1064
1065
1066
1067
1068
1069
1070
1071
1072
1073
1074
1075
1076
1077
1078
1079
1080
1081
1082
1083
1084
1085
1086
1087
1088
1089
1090
1091
1092
1093
1094
1095
1096
1097
1098
1099
1100
1101
1102
1103
1104
1105
1106
1107
1108
1109
1110
1111
1112
1113
1114
1115
1116
1117
1118
1119
1120
1121
1122
1123
1124
1125
1126
1127
1128
1129
1130
1131
1132
1133
1134
1135
1136
1137
1138
1139
1140
1141
1142
1143
1144
1145
1146
1147
1148
1149
1150
1151
1152
1153
1154
1155
1156
1157
1158
1159
1160
1161
1162
1163
1164
1165
1166
1167
1168
1169
1170
1171
1172
1173
1174
1175
1176
1177
1178
1179
1180
1181
1182
1183
1184
1185
1186
1187
1188
1189
1190
1191
1192
1193
1194
1195
1196
1197
1198
1199
1200
1201
1202
1203
1204
1205
1206
1207
1208
1209
1210
1211
1212
1213
1214
1215
1216
1217
1218
1219
1220
1221
1222
1223
1224
1225
1226
1227
1228
1229
1230
1231
1232
1233
1234
1235
1236
1237
1238
1239
1240
1241
1242
1243
1244
1245
1246
1247
1248
1249
1250
1251
1252
1253
1254
1255
1256
1257
1258
1259
1260
1261
1262
1263
1264
1265
1266
1267
1268
1269
1270
1271
1272
1273
1274
1275
1276
1277
1278
1279
1280
1281
1282
1283
1284
1285
1286
1287
1288
1289
1290
1291
1292
1293
1294
1295
1296
1297
1298
1299
1300
1301
1302
1303
1304
1305
1306
1307
1308
1309
1310
1311
1312
1313
1314
1315
1316
1317
1318
1319
1320
1321
1322
1323
1324
1325
1326
1327
1328
1329
1330
1331
1332
1333
1334
1335
1336
1337
1338
1339
1340
1341
1342
1343
1344
1345
1346
1347
1348
1349
1350
1351
1352
1353
1354
1355
1356
1357
1358
1359
1360
1361
1362
1363
1364
1365
1366
1367
1368
1369
1370
1371
1372
1373
1374
1375
1376
1377
1378
1379
1380
1381
1382
1383
1384
1385
1386
1387
1388
1389
1390
1391
1392
1393
1394
1395
1396
1397
1398
1399
1400
1401
1402
1403
1404
1405
1406
1407
1408
1409
|
/*-
* Copyright (c) 1999 Kazutaka YOKOTA <yokota@zodiac.mech.utsunomiya-u.ac.jp>
* All rights reserved.
*
* 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 as
* the first lines of this file unmodified.
* 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.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHORS ``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 AUTHORS 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.
*
* $FreeBSD$
*/
#include "opt_kbd.h"
#include "opt_atkbd.h"
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/kernel.h>
#include <sys/bus.h>
#include <sys/proc.h>
#include <sys/malloc.h>
#include <machine/bus.h>
#include <machine/resource.h>
#ifdef __i386__
#include <machine/md_var.h>
#include <machine/psl.h>
#include <machine/vm86.h>
#include <machine/pc/bios.h>
#include <vm/vm.h>
#include <vm/pmap.h>
#endif /* __i386__ */
#include <sys/kbio.h>
#include <dev/kbd/kbdreg.h>
#include <dev/kbd/atkbdreg.h>
#include <dev/kbd/atkbdcreg.h>
#include <isa/isareg.h>
static timeout_t atkbd_timeout;
int
atkbd_probe_unit(int unit, int ctlr, int irq, int flags)
{
keyboard_switch_t *sw;
int args[2];
int error;
sw = kbd_get_switch(ATKBD_DRIVER_NAME);
if (sw == NULL)
return ENXIO;
args[0] = ctlr;
args[1] = irq;
error = (*sw->probe)(unit, args, flags);
if (error)
return error;
return 0;
}
int
atkbd_attach_unit(int unit, keyboard_t **kbd, int ctlr, int irq, int flags)
{
keyboard_switch_t *sw;
int args[2];
int error;
sw = kbd_get_switch(ATKBD_DRIVER_NAME);
if (sw == NULL)
return ENXIO;
/* reset, initialize and enable the device */
args[0] = ctlr;
args[1] = irq;
*kbd = NULL;
error = (*sw->probe)(unit, args, flags);
if (error)
return error;
error = (*sw->init)(unit, kbd, args, flags);
if (error)
return error;
(*sw->enable)(*kbd);
#ifdef KBD_INSTALL_CDEV
/* attach a virtual keyboard cdev */
error = kbd_attach(*kbd);
if (error)
return error;
#endif
/*
* This is a kludge to compensate for lost keyboard interrupts.
* A similar code used to be in syscons. See below. XXX
*/
atkbd_timeout(*kbd);
if (bootverbose)
(*sw->diag)(*kbd, bootverbose);
return 0;
}
static void
atkbd_timeout(void *arg)
{
keyboard_t *kbd;
int s;
/*
* The original text of the following comments are extracted
* from syscons.c (1.287)
*
* With release 2.1 of the Xaccel server, the keyboard is left
* hanging pretty often. Apparently an interrupt from the
* keyboard is lost, and I don't know why (yet).
* This ugly hack calls the low-level interrupt routine if input
* is ready for the keyboard and conveniently hides the problem. XXX
*
* Try removing anything stuck in the keyboard controller; whether
* it's a keyboard scan code or mouse data. The low-level
* interrupt routine doesn't read the mouse data directly,
* but the keyboard controller driver will, as a side effect.
*/
/*
* And here is bde's original comment about this:
*
* This is necessary to handle edge triggered interrupts - if we
* returned when our IRQ is high due to unserviced input, then there
* would be no more keyboard IRQs until the keyboard is reset by
* external powers.
*
* The keyboard apparently unwedges the irq in most cases.
*/
s = spltty();
kbd = (keyboard_t *)arg;
if ((*kbdsw[kbd->kb_index]->lock)(kbd, TRUE)) {
/*
* We have seen the lock flag is not set. Let's reset
* the flag early, otherwise the LED update routine fails
* which may want the lock during the interrupt routine.
*/
(*kbdsw[kbd->kb_index]->lock)(kbd, FALSE);
if ((*kbdsw[kbd->kb_index]->check_char)(kbd))
(*kbdsw[kbd->kb_index]->intr)(kbd, NULL);
}
splx(s);
timeout(atkbd_timeout, arg, hz/10);
}
/* LOW-LEVEL */
#include <machine/limits.h>
#define ATKBD_DEFAULT 0
typedef struct atkbd_state {
KBDC kbdc; /* keyboard controller */
/* XXX: don't move this field; pcvt
* expects `kbdc' to be the first
* field in this structure. */
int ks_mode; /* input mode (K_XLATE,K_RAW,K_CODE) */
int ks_flags; /* flags */
#define COMPOSE (1 << 0)
int ks_polling;
int ks_state; /* shift/lock key state */
int ks_accents; /* accent key index (> 0) */
u_int ks_composed_char; /* composed char code (> 0) */
u_char ks_prefix; /* AT scan code prefix */
} atkbd_state_t;
/* keyboard driver declaration */
static int atkbd_configure(int flags);
static kbd_probe_t atkbd_probe;
static kbd_init_t atkbd_init;
static kbd_term_t atkbd_term;
static kbd_intr_t atkbd_intr;
static kbd_test_if_t atkbd_test_if;
static kbd_enable_t atkbd_enable;
static kbd_disable_t atkbd_disable;
static kbd_read_t atkbd_read;
static kbd_check_t atkbd_check;
static kbd_read_char_t atkbd_read_char;
static kbd_check_char_t atkbd_check_char;
static kbd_ioctl_t atkbd_ioctl;
static kbd_lock_t atkbd_lock;
static kbd_clear_state_t atkbd_clear_state;
static kbd_get_state_t atkbd_get_state;
static kbd_set_state_t atkbd_set_state;
static kbd_poll_mode_t atkbd_poll;
keyboard_switch_t atkbdsw = {
atkbd_probe,
atkbd_init,
atkbd_term,
atkbd_intr,
atkbd_test_if,
atkbd_enable,
atkbd_disable,
atkbd_read,
atkbd_check,
atkbd_read_char,
atkbd_check_char,
atkbd_ioctl,
atkbd_lock,
atkbd_clear_state,
atkbd_get_state,
atkbd_set_state,
genkbd_get_fkeystr,
atkbd_poll,
genkbd_diag,
};
KEYBOARD_DRIVER(atkbd, atkbdsw, atkbd_configure);
/* local functions */
static int get_typematic(keyboard_t *kbd);
static int setup_kbd_port(KBDC kbdc, int port, int intr);
static int get_kbd_echo(KBDC kbdc);
static int probe_keyboard(KBDC kbdc, int flags);
static int init_keyboard(KBDC kbdc, int *type, int flags);
static int write_kbd(KBDC kbdc, int command, int data);
static int get_kbd_id(KBDC kbdc);
static int typematic(int delay, int rate);
static int typematic_delay(int delay);
static int typematic_rate(int rate);
/* local variables */
/* the initial key map, accent map and fkey strings */
#ifdef ATKBD_DFLT_KEYMAP
#define KBD_DFLT_KEYMAP
#include "atkbdmap.h"
#endif
#include <dev/kbd/kbdtables.h>
/* structures for the default keyboard */
static keyboard_t default_kbd;
static atkbd_state_t default_kbd_state;
static keymap_t default_keymap;
static accentmap_t default_accentmap;
static fkeytab_t default_fkeytab[NUM_FKEYS];
/*
* The back door to the keyboard driver!
* This function is called by the console driver, via the kbdio module,
* to tickle keyboard drivers when the low-level console is being initialized.
* Almost nothing in the kernel has been initialied yet. Try to probe
* keyboards if possible.
* NOTE: because of the way the low-level console is initialized, this routine
* may be called more than once!!
*/
static int
atkbd_configure(int flags)
{
keyboard_t *kbd;
int arg[2];
int i;
/* probe the keyboard controller */
atkbdc_configure();
/* if the driver is disabled, unregister the keyboard if any */
if ((resource_int_value("atkbd", ATKBD_DEFAULT, "disabled", &i) == 0)
&& i != 0) {
i = kbd_find_keyboard(ATKBD_DRIVER_NAME, ATKBD_DEFAULT);
if (i >= 0) {
kbd = kbd_get_keyboard(i);
kbd_unregister(kbd);
kbd->kb_flags &= ~KB_REGISTERED;
}
return 0;
}
/* XXX: a kludge to obtain the device configuration flags */
if (resource_int_value("atkbd", ATKBD_DEFAULT, "flags", &i) == 0)
flags |= i;
/* probe the default keyboard */
arg[0] = -1;
arg[1] = -1;
kbd = NULL;
if (atkbd_probe(ATKBD_DEFAULT, arg, flags))
return 0;
if (atkbd_init(ATKBD_DEFAULT, &kbd, arg, flags))
return 0;
/* return the number of found keyboards */
return 1;
}
/* low-level functions */
/* detect a keyboard */
static int
atkbd_probe(int unit, void *arg, int flags)
{
KBDC kbdc;
int *data = (int *)arg; /* data[0]: controller, data[1]: irq */
/* XXX */
if (unit == ATKBD_DEFAULT) {
if (KBD_IS_PROBED(&default_kbd))
return 0;
}
kbdc = atkbdc_open(data[0]);
if (kbdc == NULL)
return ENXIO;
if (probe_keyboard(kbdc, flags)) {
if (flags & KB_CONF_FAIL_IF_NO_KBD)
return ENXIO;
}
return 0;
}
/* reset and initialize the device */
static int
atkbd_init(int unit, keyboard_t **kbdp, void *arg, int flags)
{
keyboard_t *kbd;
atkbd_state_t *state;
keymap_t *keymap;
accentmap_t *accmap;
fkeytab_t *fkeymap;
int fkeymap_size;
int delay[2];
int *data = (int *)arg; /* data[0]: controller, data[1]: irq */
/* XXX */
if (unit == ATKBD_DEFAULT) {
*kbdp = kbd = &default_kbd;
if (KBD_IS_INITIALIZED(kbd) && KBD_IS_CONFIGURED(kbd))
return 0;
state = &default_kbd_state;
keymap = &default_keymap;
accmap = &default_accentmap;
fkeymap = default_fkeytab;
fkeymap_size =
sizeof(default_fkeytab)/sizeof(default_fkeytab[0]);
} else if (*kbdp == NULL) {
*kbdp = kbd = malloc(sizeof(*kbd), M_DEVBUF, M_NOWAIT | M_ZERO);
state = malloc(sizeof(*state), M_DEVBUF, M_NOWAIT | M_ZERO);
keymap = malloc(sizeof(key_map), M_DEVBUF, M_NOWAIT);
accmap = malloc(sizeof(accent_map), M_DEVBUF, M_NOWAIT);
fkeymap = malloc(sizeof(fkey_tab), M_DEVBUF, M_NOWAIT);
fkeymap_size = sizeof(fkey_tab)/sizeof(fkey_tab[0]);
if ((kbd == NULL) || (state == NULL) || (keymap == NULL)
|| (accmap == NULL) || (fkeymap == NULL)) {
if (state != NULL)
free(state, M_DEVBUF);
if (keymap != NULL)
free(keymap, M_DEVBUF);
if (accmap != NULL)
free(accmap, M_DEVBUF);
if (fkeymap != NULL)
free(fkeymap, M_DEVBUF);
if (kbd != NULL)
free(kbd, M_DEVBUF);
return ENOMEM;
}
} else if (KBD_IS_INITIALIZED(*kbdp) && KBD_IS_CONFIGURED(*kbdp)) {
return 0;
} else {
kbd = *kbdp;
state = (atkbd_state_t *)kbd->kb_data;
bzero(state, sizeof(*state));
keymap = kbd->kb_keymap;
accmap = kbd->kb_accentmap;
fkeymap = kbd->kb_fkeytab;
fkeymap_size = kbd->kb_fkeytab_size;
}
if (!KBD_IS_PROBED(kbd)) {
state->kbdc = atkbdc_open(data[0]);
if (state->kbdc == NULL)
return ENXIO;
kbd_init_struct(kbd, ATKBD_DRIVER_NAME, KB_OTHER, unit, flags,
0, 0);
bcopy(&key_map, keymap, sizeof(key_map));
bcopy(&accent_map, accmap, sizeof(accent_map));
bcopy(fkey_tab, fkeymap,
imin(fkeymap_size*sizeof(fkeymap[0]), sizeof(fkey_tab)));
kbd_set_maps(kbd, keymap, accmap, fkeymap, fkeymap_size);
kbd->kb_data = (void *)state;
if (probe_keyboard(state->kbdc, flags)) { /* shouldn't happen */
if (flags & KB_CONF_FAIL_IF_NO_KBD)
return ENXIO;
} else {
KBD_FOUND_DEVICE(kbd);
}
atkbd_clear_state(kbd);
state->ks_mode = K_XLATE;
/*
* FIXME: set the initial value for lock keys in ks_state
* according to the BIOS data?
*/
KBD_PROBE_DONE(kbd);
}
if (!KBD_IS_INITIALIZED(kbd) && !(flags & KB_CONF_PROBE_ONLY)) {
kbd->kb_config = flags & ~KB_CONF_PROBE_ONLY;
if (KBD_HAS_DEVICE(kbd)
&& init_keyboard(state->kbdc, &kbd->kb_type, kbd->kb_config)
&& (kbd->kb_config & KB_CONF_FAIL_IF_NO_KBD))
return ENXIO;
atkbd_ioctl(kbd, KDSETLED, (caddr_t)&state->ks_state);
get_typematic(kbd);
delay[0] = kbd->kb_delay1;
delay[1] = kbd->kb_delay2;
atkbd_ioctl(kbd, KDSETREPEAT, (caddr_t)delay);
KBD_INIT_DONE(kbd);
}
if (!KBD_IS_CONFIGURED(kbd)) {
if (kbd_register(kbd) < 0)
return ENXIO;
KBD_CONFIG_DONE(kbd);
}
return 0;
}
/* finish using this keyboard */
static int
atkbd_term(keyboard_t *kbd)
{
kbd_unregister(kbd);
return 0;
}
/* keyboard interrupt routine */
static int
atkbd_intr(keyboard_t *kbd, void *arg)
{
atkbd_state_t *state;
int delay[2];
int c;
if (KBD_IS_ACTIVE(kbd) && KBD_IS_BUSY(kbd)) {
/* let the callback function to process the input */
(*kbd->kb_callback.kc_func)(kbd, KBDIO_KEYINPUT,
kbd->kb_callback.kc_arg);
} else {
/* read and discard the input; no one is waiting for input */
do {
c = atkbd_read_char(kbd, FALSE);
} while (c != NOKEY);
if (!KBD_HAS_DEVICE(kbd)) {
/*
* The keyboard was not detected before;
* it must have been reconnected!
*/
state = (atkbd_state_t *)kbd->kb_data;
init_keyboard(state->kbdc, &kbd->kb_type,
kbd->kb_config);
atkbd_ioctl(kbd, KDSETLED, (caddr_t)&state->ks_state);
get_typematic(kbd);
delay[0] = kbd->kb_delay1;
delay[1] = kbd->kb_delay2;
atkbd_ioctl(kbd, KDSETREPEAT, (caddr_t)delay);
KBD_FOUND_DEVICE(kbd);
}
}
return 0;
}
/* test the interface to the device */
static int
atkbd_test_if(keyboard_t *kbd)
{
int error;
int s;
error = 0;
empty_both_buffers(((atkbd_state_t *)kbd->kb_data)->kbdc, 10);
s = spltty();
if (!test_controller(((atkbd_state_t *)kbd->kb_data)->kbdc))
error = EIO;
else if (test_kbd_port(((atkbd_state_t *)kbd->kb_data)->kbdc) != 0)
error = EIO;
splx(s);
return error;
}
/*
* Enable the access to the device; until this function is called,
* the client cannot read from the keyboard.
*/
static int
atkbd_enable(keyboard_t *kbd)
{
int s;
s = spltty();
KBD_ACTIVATE(kbd);
splx(s);
return 0;
}
/* disallow the access to the device */
static int
atkbd_disable(keyboard_t *kbd)
{
int s;
s = spltty();
KBD_DEACTIVATE(kbd);
splx(s);
return 0;
}
/* read one byte from the keyboard if it's allowed */
static int
atkbd_read(keyboard_t *kbd, int wait)
{
int c;
if (wait)
c = read_kbd_data(((atkbd_state_t *)kbd->kb_data)->kbdc);
else
c = read_kbd_data_no_wait(((atkbd_state_t *)kbd->kb_data)->kbdc);
if (c != -1)
++kbd->kb_count;
return (KBD_IS_ACTIVE(kbd) ? c : -1);
}
/* check if data is waiting */
static int
atkbd_check(keyboard_t *kbd)
{
if (!KBD_IS_ACTIVE(kbd))
return FALSE;
return kbdc_data_ready(((atkbd_state_t *)kbd->kb_data)->kbdc);
}
/* read char from the keyboard */
static u_int
atkbd_read_char(keyboard_t *kbd, int wait)
{
atkbd_state_t *state;
u_int action;
int scancode;
int keycode;
state = (atkbd_state_t *)kbd->kb_data;
next_code:
/* do we have a composed char to return? */
if (!(state->ks_flags & COMPOSE) && (state->ks_composed_char > 0)) {
action = state->ks_composed_char;
state->ks_composed_char = 0;
if (action > UCHAR_MAX)
return ERRKEY;
return action;
}
/* see if there is something in the keyboard port */
if (wait) {
do {
scancode = read_kbd_data(state->kbdc);
} while (scancode == -1);
} else {
scancode = read_kbd_data_no_wait(state->kbdc);
if (scancode == -1)
return NOKEY;
}
++kbd->kb_count;
#if KBDIO_DEBUG >= 10
printf("atkbd_read_char(): scancode:0x%x\n", scancode);
#endif
/* return the byte as is for the K_RAW mode */
if (state->ks_mode == K_RAW)
return scancode;
/* translate the scan code into a keycode */
keycode = scancode & 0x7F;
switch (state->ks_prefix) {
case 0x00: /* normal scancode */
switch(scancode) {
case 0xB8: /* left alt (compose key) released */
if (state->ks_flags & COMPOSE) {
state->ks_flags &= ~COMPOSE;
if (state->ks_composed_char > UCHAR_MAX)
state->ks_composed_char = 0;
}
break;
case 0x38: /* left alt (compose key) pressed */
if (!(state->ks_flags & COMPOSE)) {
state->ks_flags |= COMPOSE;
state->ks_composed_char = 0;
}
break;
case 0xE0:
case 0xE1:
state->ks_prefix = scancode;
goto next_code;
}
break;
case 0xE0: /* 0xE0 prefix */
state->ks_prefix = 0;
switch (keycode) {
case 0x1C: /* right enter key */
keycode = 0x59;
break;
case 0x1D: /* right ctrl key */
keycode = 0x5A;
break;
case 0x35: /* keypad divide key */
keycode = 0x5B;
break;
case 0x37: /* print scrn key */
keycode = 0x5C;
break;
case 0x38: /* right alt key (alt gr) */
keycode = 0x5D;
break;
case 0x46: /* ctrl-pause/break on AT 101 (see below) */
keycode = 0x68;
break;
case 0x47: /* grey home key */
keycode = 0x5E;
break;
case 0x48: /* grey up arrow key */
keycode = 0x5F;
break;
case 0x49: /* grey page up key */
keycode = 0x60;
break;
case 0x4B: /* grey left arrow key */
keycode = 0x61;
break;
case 0x4D: /* grey right arrow key */
keycode = 0x62;
break;
case 0x4F: /* grey end key */
keycode = 0x63;
break;
case 0x50: /* grey down arrow key */
keycode = 0x64;
break;
case 0x51: /* grey page down key */
keycode = 0x65;
break;
case 0x52: /* grey insert key */
keycode = 0x66;
break;
case 0x53: /* grey delete key */
keycode = 0x67;
break;
/* the following 3 are only used on the MS "Natural" keyboard */
case 0x5b: /* left Window key */
keycode = 0x69;
break;
case 0x5c: /* right Window key */
keycode = 0x6a;
break;
case 0x5d: /* menu key */
keycode = 0x6b;
break;
default: /* ignore everything else */
goto next_code;
}
break;
case 0xE1: /* 0xE1 prefix */
/*
* The pause/break key on the 101 keyboard produces:
* E1-1D-45 E1-9D-C5
* Ctrl-pause/break produces:
* E0-46 E0-C6 (See above.)
*/
state->ks_prefix = 0;
if (keycode == 0x1D)
state->ks_prefix = 0x1D;
goto next_code;
/* NOT REACHED */
case 0x1D: /* pause / break */
state->ks_prefix = 0;
if (keycode != 0x45)
goto next_code;
keycode = 0x68;
break;
}
if (kbd->kb_type == KB_84) {
switch (keycode) {
case 0x37: /* *(numpad)/print screen */
if (state->ks_flags & SHIFTS)
keycode = 0x5c; /* print screen */
break;
case 0x45: /* num lock/pause */
if (state->ks_flags & CTLS)
keycode = 0x68; /* pause */
break;
case 0x46: /* scroll lock/break */
if (state->ks_flags & CTLS)
keycode = 0x6c; /* break */
break;
}
} else if (kbd->kb_type == KB_101) {
switch (keycode) {
case 0x5c: /* print screen */
if (state->ks_flags & ALTS)
keycode = 0x54; /* sysrq */
break;
case 0x68: /* pause/break */
if (state->ks_flags & CTLS)
keycode = 0x6c; /* break */
break;
}
}
/* return the key code in the K_CODE mode */
if (state->ks_mode == K_CODE)
return (keycode | (scancode & 0x80));
/* compose a character code */
if (state->ks_flags & COMPOSE) {
switch (keycode | (scancode & 0x80)) {
/* key pressed, process it */
case 0x47: case 0x48: case 0x49: /* keypad 7,8,9 */
state->ks_composed_char *= 10;
state->ks_composed_char += keycode - 0x40;
if (state->ks_composed_char > UCHAR_MAX)
return ERRKEY;
goto next_code;
case 0x4B: case 0x4C: case 0x4D: /* keypad 4,5,6 */
state->ks_composed_char *= 10;
state->ks_composed_char += keycode - 0x47;
if (state->ks_composed_char > UCHAR_MAX)
return ERRKEY;
goto next_code;
case 0x4F: case 0x50: case 0x51: /* keypad 1,2,3 */
state->ks_composed_char *= 10;
state->ks_composed_char += keycode - 0x4E;
if (state->ks_composed_char > UCHAR_MAX)
return ERRKEY;
goto next_code;
case 0x52: /* keypad 0 */
state->ks_composed_char *= 10;
if (state->ks_composed_char > UCHAR_MAX)
return ERRKEY;
goto next_code;
/* key released, no interest here */
case 0xC7: case 0xC8: case 0xC9: /* keypad 7,8,9 */
case 0xCB: case 0xCC: case 0xCD: /* keypad 4,5,6 */
case 0xCF: case 0xD0: case 0xD1: /* keypad 1,2,3 */
case 0xD2: /* keypad 0 */
goto next_code;
case 0x38: /* left alt key */
break;
default:
if (state->ks_composed_char > 0) {
state->ks_flags &= ~COMPOSE;
state->ks_composed_char = 0;
return ERRKEY;
}
break;
}
}
/* keycode to key action */
action = genkbd_keyaction(kbd, keycode, scancode & 0x80,
&state->ks_state, &state->ks_accents);
if (action == NOKEY)
goto next_code;
else
return action;
}
/* check if char is waiting */
static int
atkbd_check_char(keyboard_t *kbd)
{
atkbd_state_t *state;
if (!KBD_IS_ACTIVE(kbd))
return FALSE;
state = (atkbd_state_t *)kbd->kb_data;
if (!(state->ks_flags & COMPOSE) && (state->ks_composed_char > 0))
return TRUE;
return kbdc_data_ready(state->kbdc);
}
/* some useful control functions */
static int
atkbd_ioctl(keyboard_t *kbd, u_long cmd, caddr_t arg)
{
/* trasnlate LED_XXX bits into the device specific bits */
static u_char ledmap[8] = {
0, 4, 2, 6, 1, 5, 3, 7,
};
atkbd_state_t *state = kbd->kb_data;
int error;
int s;
int i;
s = spltty();
switch (cmd) {
case KDGKBMODE: /* get keyboard mode */
*(int *)arg = state->ks_mode;
break;
case KDSKBMODE: /* set keyboard mode */
switch (*(int *)arg) {
case K_XLATE:
if (state->ks_mode != K_XLATE) {
/* make lock key state and LED state match */
state->ks_state &= ~LOCK_MASK;
state->ks_state |= KBD_LED_VAL(kbd);
}
/* FALL THROUGH */
case K_RAW:
case K_CODE:
if (state->ks_mode != *(int *)arg) {
atkbd_clear_state(kbd);
state->ks_mode = *(int *)arg;
}
break;
default:
splx(s);
return EINVAL;
}
break;
case KDGETLED: /* get keyboard LED */
*(int *)arg = KBD_LED_VAL(kbd);
break;
case KDSETLED: /* set keyboard LED */
/* NOTE: lock key state in ks_state won't be changed */
if (*(int *)arg & ~LOCK_MASK) {
splx(s);
return EINVAL;
}
i = *(int *)arg;
/* replace CAPS LED with ALTGR LED for ALTGR keyboards */
if (state->ks_mode == K_XLATE &&
kbd->kb_keymap->n_keys > ALTGR_OFFSET) {
if (i & ALKED)
i |= CLKED;
else
i &= ~CLKED;
}
if (KBD_HAS_DEVICE(kbd)) {
error = write_kbd(state->kbdc, KBDC_SET_LEDS,
ledmap[i & LED_MASK]);
if (error) {
splx(s);
return error;
}
}
KBD_LED_VAL(kbd) = *(int *)arg;
break;
case KDGKBSTATE: /* get lock key state */
*(int *)arg = state->ks_state & LOCK_MASK;
break;
case KDSKBSTATE: /* set lock key state */
if (*(int *)arg & ~LOCK_MASK) {
splx(s);
return EINVAL;
}
state->ks_state &= ~LOCK_MASK;
state->ks_state |= *(int *)arg;
splx(s);
/* set LEDs and quit */
return atkbd_ioctl(kbd, KDSETLED, arg);
case KDSETREPEAT: /* set keyboard repeat rate (new interface) */
splx(s);
if (!KBD_HAS_DEVICE(kbd))
return 0;
i = typematic(((int *)arg)[0], ((int *)arg)[1]);
error = write_kbd(state->kbdc, KBDC_SET_TYPEMATIC, i);
if (error == 0) {
kbd->kb_delay1 = typematic_delay(i);
kbd->kb_delay2 = typematic_rate(i);
}
return error;
case KDSETRAD: /* set keyboard repeat rate (old interface) */
splx(s);
if (!KBD_HAS_DEVICE(kbd))
return 0;
error = write_kbd(state->kbdc, KBDC_SET_TYPEMATIC, *(int *)arg);
if (error == 0) {
kbd->kb_delay1 = typematic_delay(*(int *)arg);
kbd->kb_delay2 = typematic_rate(*(int *)arg);
}
return error;
case PIO_KEYMAP: /* set keyboard translation table */
case PIO_KEYMAPENT: /* set keyboard translation table entry */
case PIO_DEADKEYMAP: /* set accent key translation table */
state->ks_accents = 0;
/* FALL THROUGH */
default:
splx(s);
return genkbd_commonioctl(kbd, cmd, arg);
}
splx(s);
return 0;
}
/* lock the access to the keyboard */
static int
atkbd_lock(keyboard_t *kbd, int lock)
{
return kbdc_lock(((atkbd_state_t *)kbd->kb_data)->kbdc, lock);
}
/* clear the internal state of the keyboard */
static void
atkbd_clear_state(keyboard_t *kbd)
{
atkbd_state_t *state;
state = (atkbd_state_t *)kbd->kb_data;
state->ks_flags = 0;
state->ks_polling = 0;
state->ks_state &= LOCK_MASK; /* preserve locking key state */
state->ks_accents = 0;
state->ks_composed_char = 0;
#if 0
state->ks_prefix = 0; /* XXX */
#endif
}
/* save the internal state */
static int
atkbd_get_state(keyboard_t *kbd, void *buf, size_t len)
{
if (len == 0)
return sizeof(atkbd_state_t);
if (len < sizeof(atkbd_state_t))
return -1;
bcopy(kbd->kb_data, buf, sizeof(atkbd_state_t));
return 0;
}
/* set the internal state */
static int
atkbd_set_state(keyboard_t *kbd, void *buf, size_t len)
{
if (len < sizeof(atkbd_state_t))
return ENOMEM;
if (((atkbd_state_t *)kbd->kb_data)->kbdc
!= ((atkbd_state_t *)buf)->kbdc)
return ENOMEM;
bcopy(buf, kbd->kb_data, sizeof(atkbd_state_t));
return 0;
}
static int
atkbd_poll(keyboard_t *kbd, int on)
{
atkbd_state_t *state;
int s;
state = (atkbd_state_t *)kbd->kb_data;
s = spltty();
if (on)
++state->ks_polling;
else
--state->ks_polling;
splx(s);
return 0;
}
/* local functions */
static int
get_typematic(keyboard_t *kbd)
{
#ifdef __i386__
/*
* Only some systems allow us to retrieve the keyboard repeat
* rate previously set via the BIOS...
*/
struct vm86frame vmf;
u_int32_t p;
bzero(&vmf, sizeof(vmf));
vmf.vmf_ax = 0xc000;
vm86_intcall(0x15, &vmf);
if ((vmf.vmf_eflags & PSL_C) || vmf.vmf_ah)
return ENODEV;
p = BIOS_PADDRTOVADDR(((u_int32_t)vmf.vmf_es << 4) + vmf.vmf_bx);
if ((readb(p + 6) & 0x40) == 0) /* int 16, function 0x09 supported? */
return ENODEV;
vmf.vmf_ax = 0x0900;
vm86_intcall(0x16, &vmf);
if ((vmf.vmf_al & 0x08) == 0) /* int 16, function 0x0306 supported? */
return ENODEV;
vmf.vmf_ax = 0x0306;
vm86_intcall(0x16, &vmf);
kbd->kb_delay1 = typematic_delay(vmf.vmf_bh << 5);
kbd->kb_delay2 = typematic_rate(vmf.vmf_bl);
return 0;
#else
return ENODEV;
#endif /* __i386__ */
}
static int
setup_kbd_port(KBDC kbdc, int port, int intr)
{
if (!set_controller_command_byte(kbdc,
KBD_KBD_CONTROL_BITS,
((port) ? KBD_ENABLE_KBD_PORT : KBD_DISABLE_KBD_PORT)
| ((intr) ? KBD_ENABLE_KBD_INT : KBD_DISABLE_KBD_INT)))
return 1;
return 0;
}
static int
get_kbd_echo(KBDC kbdc)
{
/* enable the keyboard port, but disable the keyboard intr. */
if (setup_kbd_port(kbdc, TRUE, FALSE))
/* CONTROLLER ERROR: there is very little we can do... */
return ENXIO;
/* see if something is present */
write_kbd_command(kbdc, KBDC_ECHO);
if (read_kbd_data(kbdc) != KBD_ECHO) {
empty_both_buffers(kbdc, 10);
test_controller(kbdc);
test_kbd_port(kbdc);
return ENXIO;
}
/* enable the keyboard port and intr. */
if (setup_kbd_port(kbdc, TRUE, TRUE)) {
/*
* CONTROLLER ERROR
* This is serious; the keyboard intr is left disabled!
*/
return ENXIO;
}
return 0;
}
static int
probe_keyboard(KBDC kbdc, int flags)
{
/*
* Don't try to print anything in this function. The low-level
* console may not have been initialized yet...
*/
int err;
int c;
int m;
if (!kbdc_lock(kbdc, TRUE)) {
/* driver error? */
return ENXIO;
}
/* temporarily block data transmission from the keyboard */
write_controller_command(kbdc, KBDC_DISABLE_KBD_PORT);
/* flush any noise in the buffer */
empty_both_buffers(kbdc, 100);
/* save the current keyboard controller command byte */
m = kbdc_get_device_mask(kbdc) & ~KBD_KBD_CONTROL_BITS;
c = get_controller_command_byte(kbdc);
if (c == -1) {
/* CONTROLLER ERROR */
kbdc_set_device_mask(kbdc, m);
kbdc_lock(kbdc, FALSE);
return ENXIO;
}
/*
* The keyboard may have been screwed up by the boot block.
* We may just be able to recover from error by testing the controller
* and the keyboard port. The controller command byte needs to be
* saved before this recovery operation, as some controllers seem
* to set the command byte to particular values.
*/
test_controller(kbdc);
test_kbd_port(kbdc);
err = get_kbd_echo(kbdc);
/*
* Even if the keyboard doesn't seem to be present (err != 0),
* we shall enable the keyboard port and interrupt so that
* the driver will be operable when the keyboard is attached
* to the system later. It is NOT recommended to hot-plug
* the AT keyboard, but many people do so...
*/
kbdc_set_device_mask(kbdc, m | KBD_KBD_CONTROL_BITS);
setup_kbd_port(kbdc, TRUE, TRUE);
#if 0
if (err == 0) {
kbdc_set_device_mask(kbdc, m | KBD_KBD_CONTROL_BITS);
} else {
/* try to restore the command byte as before */
set_controller_command_byte(kbdc, 0xff, c);
kbdc_set_device_mask(kbdc, m);
}
#endif
kbdc_lock(kbdc, FALSE);
return err;
}
static int
init_keyboard(KBDC kbdc, int *type, int flags)
{
int codeset;
int id;
int c;
if (!kbdc_lock(kbdc, TRUE)) {
/* driver error? */
return EIO;
}
/* temporarily block data transmission from the keyboard */
write_controller_command(kbdc, KBDC_DISABLE_KBD_PORT);
/* save the current controller command byte */
empty_both_buffers(kbdc, 200);
c = get_controller_command_byte(kbdc);
if (c == -1) {
/* CONTROLLER ERROR */
kbdc_lock(kbdc, FALSE);
printf("atkbd: unable to get the current command byte value.\n");
return EIO;
}
if (bootverbose)
printf("atkbd: the current kbd controller command byte %04x\n",
c);
#if 0
/* override the keyboard lock switch */
c |= KBD_OVERRIDE_KBD_LOCK;
#endif
/* enable the keyboard port, but disable the keyboard intr. */
if (setup_kbd_port(kbdc, TRUE, FALSE)) {
/* CONTROLLER ERROR: there is very little we can do... */
printf("atkbd: unable to set the command byte.\n");
kbdc_lock(kbdc, FALSE);
return EIO;
}
/*
* Check if we have an XT keyboard before we attempt to reset it.
* The procedure assumes that the keyboard and the controller have
* been set up properly by BIOS and have not been messed up
* during the boot process.
*/
codeset = -1;
if (flags & KB_CONF_ALT_SCANCODESET)
/* the user says there is a XT keyboard */
codeset = 1;
#ifdef KBD_DETECT_XT_KEYBOARD
else if ((c & KBD_TRANSLATION) == 0) {
/* SET_SCANCODE_SET is not always supported; ignore error */
if (send_kbd_command_and_data(kbdc, KBDC_SET_SCANCODE_SET, 0)
== KBD_ACK)
codeset = read_kbd_data(kbdc);
}
if (bootverbose)
printf("atkbd: scancode set %d\n", codeset);
#endif /* KBD_DETECT_XT_KEYBOARD */
*type = KB_OTHER;
id = get_kbd_id(kbdc);
switch(id) {
case 0x41ab: /* 101/102/... Enhanced */
case 0x83ab: /* ditto */
case 0x54ab: /* SpaceSaver */
case 0x84ab: /* ditto */
#if 0
case 0x90ab: /* 'G' */
case 0x91ab: /* 'P' */
case 0x92ab: /* 'A' */
#endif
*type = KB_101;
break;
case -1: /* AT 84 keyboard doesn't return ID */
*type = KB_84;
break;
default:
break;
}
if (bootverbose)
printf("atkbd: keyboard ID 0x%x (%d)\n", id, *type);
/* reset keyboard hardware */
if (!(flags & KB_CONF_NO_RESET) && !reset_kbd(kbdc)) {
/*
* KEYBOARD ERROR
* Keyboard reset may fail either because the keyboard
* doen't exist, or because the keyboard doesn't pass
* the self-test, or the keyboard controller on the
* motherboard and the keyboard somehow fail to shake hands.
* It is just possible, particularly in the last case,
* that the keyoard controller may be left in a hung state.
* test_controller() and test_kbd_port() appear to bring
* the keyboard controller back (I don't know why and how,
* though.)
*/
empty_both_buffers(kbdc, 10);
test_controller(kbdc);
test_kbd_port(kbdc);
/*
* We could disable the keyboard port and interrupt... but,
* the keyboard may still exist (see above).
*/
set_controller_command_byte(kbdc, 0xff, c);
kbdc_lock(kbdc, FALSE);
if (bootverbose)
printf("atkbd: failed to reset the keyboard.\n");
return EIO;
}
/*
* Allow us to set the XT_KEYBD flag so that keyboards
* such as those on the IBM ThinkPad laptop computers can be used
* with the standard console driver.
*/
if (codeset == 1) {
if (send_kbd_command_and_data(kbdc,
KBDC_SET_SCANCODE_SET, codeset) == KBD_ACK) {
/* XT kbd doesn't need scan code translation */
c &= ~KBD_TRANSLATION;
} else {
/*
* KEYBOARD ERROR
* The XT kbd isn't usable unless the proper scan
* code set is selected.
*/
set_controller_command_byte(kbdc, 0xff, c);
kbdc_lock(kbdc, FALSE);
printf("atkbd: unable to set the XT keyboard mode.\n");
return EIO;
}
}
#ifdef __alpha__
if (send_kbd_command_and_data(
kbdc, KBDC_SET_SCANCODE_SET, 2) != KBD_ACK) {
printf("atkbd: can't set translation.\n");
}
c |= KBD_TRANSLATION;
#endif
/* enable the keyboard port and intr. */
if (!set_controller_command_byte(kbdc,
KBD_KBD_CONTROL_BITS | KBD_TRANSLATION | KBD_OVERRIDE_KBD_LOCK,
(c & (KBD_TRANSLATION | KBD_OVERRIDE_KBD_LOCK))
| KBD_ENABLE_KBD_PORT | KBD_ENABLE_KBD_INT)) {
/*
* CONTROLLER ERROR
* This is serious; we are left with the disabled
* keyboard intr.
*/
set_controller_command_byte(kbdc, 0xff, c);
kbdc_lock(kbdc, FALSE);
printf("atkbd: unable to enable the keyboard port and intr.\n");
return EIO;
}
kbdc_lock(kbdc, FALSE);
return 0;
}
static int
write_kbd(KBDC kbdc, int command, int data)
{
int s;
/* prevent the timeout routine from polling the keyboard */
if (!kbdc_lock(kbdc, TRUE))
return EBUSY;
/* disable the keyboard and mouse interrupt */
s = spltty();
#if 0
c = get_controller_command_byte(kbdc);
if ((c == -1)
|| !set_controller_command_byte(kbdc,
kbdc_get_device_mask(kbdc),
KBD_DISABLE_KBD_PORT | KBD_DISABLE_KBD_INT
| KBD_DISABLE_AUX_PORT | KBD_DISABLE_AUX_INT)) {
/* CONTROLLER ERROR */
kbdc_lock(kbdc, FALSE);
splx(s);
return EIO;
}
/*
* Now that the keyboard controller is told not to generate
* the keyboard and mouse interrupts, call `splx()' to allow
* the other tty interrupts. The clock interrupt may also occur,
* but the timeout routine (`scrn_timer()') will be blocked
* by the lock flag set via `kbdc_lock()'
*/
splx(s);
#endif
if (send_kbd_command_and_data(kbdc, command, data) != KBD_ACK)
send_kbd_command(kbdc, KBDC_ENABLE_KBD);
#if 0
/* restore the interrupts */
if (!set_controller_command_byte(kbdc,
kbdc_get_device_mask(kbdc),
c & (KBD_KBD_CONTROL_BITS | KBD_AUX_CONTROL_BITS))) {
/* CONTROLLER ERROR */
}
#else
splx(s);
#endif
kbdc_lock(kbdc, FALSE);
return 0;
}
static int
get_kbd_id(KBDC kbdc)
{
int id1, id2;
empty_both_buffers(kbdc, 10);
id1 = id2 = -1;
if (send_kbd_command(kbdc, KBDC_SEND_DEV_ID) != KBD_ACK)
return -1;
DELAY(10000); /* 10 msec delay */
id1 = read_kbd_data(kbdc);
if (id1 != -1)
id2 = read_kbd_data(kbdc);
if ((id1 == -1) || (id2 == -1)) {
empty_both_buffers(kbdc, 10);
test_controller(kbdc);
test_kbd_port(kbdc);
return -1;
}
return ((id2 << 8) | id1);
}
static int delays[] = { 250, 500, 750, 1000 };
static int rates[] = { 34, 38, 42, 46, 50, 55, 59, 63,
68, 76, 84, 92, 100, 110, 118, 126,
136, 152, 168, 184, 200, 220, 236, 252,
272, 304, 336, 368, 400, 440, 472, 504 };
static int
typematic_delay(int i)
{
return delays[(i >> 5) & 3];
}
static int
typematic_rate(int i)
{
return rates[i & 0x1f];
}
static int
typematic(int delay, int rate)
{
int value;
int i;
for (i = sizeof(delays)/sizeof(delays[0]) - 1; i > 0; --i) {
if (delay >= delays[i])
break;
}
value = i << 5;
for (i = sizeof(rates)/sizeof(rates[0]) - 1; i > 0; --i) {
if (rate >= rates[i])
break;
}
value |= i;
return value;
}
|