xref: /titanic_44/usr/src/uts/common/io/kb8042/at_keyprocess.c (revision 0dc2366f7b9f9f36e10909b1e95edbf2a261c2ac)
1 /*
2  * CDDL HEADER START
3  *
4  * The contents of this file are subject to the terms of the
5  * Common Development and Distribution License (the "License").
6  * You may not use this file except in compliance with the License.
7  *
8  * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
9  * or http://www.opensolaris.org/os/licensing.
10  * See the License for the specific language governing permissions
11  * and limitations under the License.
12  *
13  * When distributing Covered Code, include this CDDL HEADER in each
14  * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
15  * If applicable, add the following below this CDDL HEADER, with the
16  * fields enclosed by brackets "[]" replaced with your own identifying
17  * information: Portions Copyright [yyyy] [name of copyright owner]
18  *
19  * CDDL HEADER END
20  */
21 /*
22  * Copyright 2009 Sun Microsystems, Inc.  All rights reserved.
23  * Use is subject to license terms.
24  */
25 
26 #include <sys/types.h>
27 #include <sys/stream.h>
28 #include <sys/kbd.h>
29 #include <sys/kbtrans.h>
30 #include <sys/sunddi.h>
31 #include <sys/consdev.h>
32 #include <sys/promif.h>
33 #include "kb8042.h"
34 
35 /*
36  * A note on the use of prom_printf here:  Most of these routines can be
37  * called from "polled mode", where we're servicing I/O requests from kmdb.
38  * Normal system services are not available from polled mode; cmn_err will
39  * not work.  prom_printf is the only safe output mechanism.
40  */
41 
42 #define	KEYBAD		0xff		/* should generate an error */
43 #define	KEYIGN		0xfe		/* ignore this sequence */
44 
45 #define	KEY(code)	(code)
46 #define	INVALID		KEYBAD
47 #define	IGNORE		KEYIGN
48 
49 #define	NELEM(a)	(sizeof (a) / sizeof (a)[0])
50 
51 /*
52  * These are the states of our parsing machine:
53  */
54 #define	STATE_IDLE	0x00000001 /* Awaiting the start of a sequence */
55 #define	STATE_E0	0x00000002 /* Rec'd an E0 */
56 #define	STATE_E1	0x00000004 /* Rec'd an E1 (Pause key only) */
57 #define	STATE_E1_1D	0x00000008 /* Rec'd an E1 1D (Pause key only) */
58 #define	STATE_E1_14	0x00000010 /* Rec'd an E1 14 (Pause key only) */
59 #define	STATE_E1_14_77			0x00000020
60 #define	STATE_E1_14_77_E1		0x00000040
61 #define	STATE_E1_14_77_E1_F0		0x00000080
62 #define	STATE_E1_14_77_E1_F0_14		0x00000100
63 #define	STATE_E1_14_77_E1_F0_14_F0	0x00000200
64 
65 static boolean_t KeyboardConvertScan_set1(struct kb8042	*, unsigned char, int *,
66     enum keystate *, boolean_t *);
67 static boolean_t KeyboardConvertScan_set2(struct kb8042	*, unsigned char, int *,
68     enum keystate *, boolean_t *);
69 
70 static const unsigned char *keytab_base = NULL;
71 static int keytab_base_length = 0;
72 static const unsigned char *keytab_e0 = NULL;
73 static int keytab_e0_length = 0;
74 static boolean_t (*KeyboardConvertScan_fn)(struct kb8042 *, unsigned char,
75     int *, enum keystate *, boolean_t *) = NULL;
76 
77 static const unsigned char	keytab_base_set1[] = {
78 /* scan		key number	keycap */
79 /* 00 */	INVALID,
80 /* 01 */	KEY(110),	/* Esc */
81 /* 02 */	KEY(2),		/* 1 */
82 /* 03 */	KEY(3),		/* 2 */
83 /* 04 */	KEY(4),		/* 3 */
84 /* 05 */	KEY(5),		/* 4 */
85 /* 06 */	KEY(6),		/* 5 */
86 /* 07 */	KEY(7),		/* 6 */
87 /* 08 */	KEY(8),		/* 7 */
88 /* 09 */	KEY(9),		/* 8 */
89 /* 0a */	KEY(10),	/* 9 */
90 /* 0b */	KEY(11),	/* 0 */
91 /* 0c */	KEY(12),	/* - */
92 /* 0d */	KEY(13),	/* = */
93 /* 0e */	KEY(15),	/* backspace */
94 /* 0f */	KEY(16),	/* tab */
95 
96 /* 10 */	KEY(17),	/* Q */
97 /* 11 */	KEY(18),	/* W */
98 /* 12 */	KEY(19),	/* E */
99 /* 13 */	KEY(20),	/* R */
100 /* 14 */	KEY(21),	/* T */
101 /* 15 */	KEY(22),	/* Y */
102 /* 16 */	KEY(23),	/* U */
103 /* 17 */	KEY(24),	/* I */
104 /* 18 */	KEY(25),	/* O */
105 /* 19 */	KEY(26),	/* P */
106 /* 1a */	KEY(27),	/* [ */
107 /* 1b */	KEY(28),	/* ] */
108 /* 1c */	KEY(43),	/* Enter (main) */
109 /* 1d */	KEY(58),	/* L Ctrl */
110 /* 1e */	KEY(31),	/* A */
111 /* 1f */	KEY(32),	/* S */
112 
113 /* 20 */	KEY(33),	/* D */
114 /* 21 */	KEY(34),	/* F */
115 /* 22 */	KEY(35),	/* G */
116 /* 23 */	KEY(36),	/* H */
117 /* 24 */	KEY(37),	/* J */
118 /* 25 */	KEY(38),	/* K */
119 /* 26 */	KEY(39),	/* L */
120 /* 27 */	KEY(40),	/* ; */
121 /* 28 */	KEY(41),	/* ' */
122 /* 29 */	KEY(1),		/* ` */
123 /* 2a */	KEY(44),	/* L Shift */
124 /* 2b */	KEY(29),	/* \ */
125 /* 2c */	KEY(46),	/* Z */
126 /* 2d */	KEY(47),	/* X */
127 /* 2e */	KEY(48),	/* C */
128 /* 2f */	KEY(49),	/* V */
129 
130 /* 30 */	KEY(50),	/* B */
131 /* 31 */	KEY(51),	/* N */
132 /* 32 */	KEY(52),	/* M */
133 /* 33 */	KEY(53),	/* , */
134 /* 34 */	KEY(54),	/* . */
135 /* 35 */	KEY(55),	/* / */
136 /* 36 */	KEY(57),	/* R Shift */
137 /* 37 */	KEY(100),	/* * (num) */
138 /* 38 */	KEY(60),	/* L Alt */
139 /* 39 */	KEY(61),	/* Space */
140 /* 3a */	KEY(30),	/* CapsLock */
141 /* 3b */	KEY(112),	/* F1 */
142 /* 3c */	KEY(113),	/* F2 */
143 /* 3d */	KEY(114),	/* F3 */
144 /* 3e */	KEY(115),	/* F4 */
145 /* 3f */	KEY(116),	/* F5 */
146 
147 /* 40 */	KEY(117),	/* F6 */
148 /* 41 */	KEY(118),	/* F7 */
149 /* 42 */	KEY(119),	/* F8 */
150 /* 43 */	KEY(120),	/* F9 */
151 /* 44 */	KEY(121),	/* F10 */
152 /* 45 */	KEY(90),	/* NumLock */
153 /* 46 */	KEY(125),	/* Scroll Lock */
154 /* 47 */	KEY(91),	/* 7 (num) */
155 /* 48 */	KEY(96),	/* 8 (num) */
156 /* 49 */	KEY(101),	/* 9 (num) */
157 /* 4a */	KEY(105),	/* - (num) */
158 /* 4b */	KEY(92),	/* 4 (num) */
159 /* 4c */	KEY(97),	/* 5 (num) */
160 /* 4d */	KEY(102),	/* 6 (num) */
161 /* 4e */	KEY(106),	/* + (num) */
162 /* 4f */	KEY(93),	/* 1 (num) */
163 
164 /* 50 */	KEY(98),	/* 2 (num) */
165 /* 51 */	KEY(103),	/* 3 (num) */
166 /* 52 */	KEY(99),	/* 0 (num) */
167 /* 53 */	KEY(104),	/* . (num) */
168 /* 54 */	KEY(124),	/* PrintScreen (with Alt) */
169 /* 55 */	INVALID,
170 /* 56 */	KEY(45),	/* not labled (102-key only) */
171 /* 57 */	KEY(122),	/* F11 */
172 /* 58 */	KEY(123),	/* F12 */
173 /* 59 */	INVALID,
174 /* 5a */	INVALID,
175 /* 5b */	INVALID,
176 /* 5c */	INVALID,
177 /* 5d */	INVALID,
178 /* 5e */	INVALID,
179 /* 5f */	INVALID,
180 
181 /* 60 */	INVALID,
182 /* 61 */	INVALID,
183 /* 62 */	INVALID,
184 /* 63 */	INVALID,
185 /* 64 */	INVALID,
186 /* 65 */	INVALID,
187 /* 66 */	INVALID,
188 /* 67 */	INVALID,
189 /* 68 */	INVALID,
190 /* 69 */	INVALID,
191 /* 6a */	INVALID,
192 /* 6b */	INVALID,
193 /* 6c */	INVALID,
194 /* 6d */	INVALID,
195 /* 6e */	INVALID,
196 /* 6f */	INVALID,
197 
198 /* 70 */	KEY(133),	/* Japanese 106-key keyboard */
199 /* 71 */	INVALID,
200 /* 72 */	INVALID,
201 /* 73 */	KEY(56),	/* Japanese 106-key keyboard */
202 /* 74 */	INVALID,
203 /* 75 */	INVALID,
204 /* 76 */	INVALID,
205 /* 77 */	INVALID,
206 /* 78 */	INVALID,
207 /* 79 */	KEY(132),	/* Japanese 106-key keyboard */
208 /* 7a */	INVALID,
209 /* 7b */	KEY(131),	/* Japanese 106-key keyboard */
210 /* 7c */	INVALID,
211 /* 7d */	KEY(14),	/* Japanese 106-key keyboard */
212 /* 7e */	INVALID,
213 /* 7f */	INVALID,
214 };
215 
216 /*
217  * Parse table after receiving an E0 prefix code.
218  *
219  * Generally speaking, keys that were added on the 101-key keyboard are
220  * represented as an E0 followed by the code for an 84-key key.  Software
221  * ignorant of the 101-key keyboard ignores the E0 and so is handled
222  * compatibly.  Many of these variants involve "fake" shift presses
223  * and releases for compatibility; these are also prefixed with E0.
224  * We ignore these fake shifts.
225  */
226 static const unsigned char	keytab_e0_set1[] = {
227 /* 00 */	INVALID,
228 /* 01 */	INVALID,
229 /* 02 */	INVALID,
230 /* 03 */	INVALID,
231 /* 04 */	INVALID,
232 /* 05 */	INVALID,
233 /* 06 */	INVALID,
234 /* 07 */	INVALID,
235 /* 08 */	INVALID,
236 /* 09 */	INVALID,
237 /* 0a */	INVALID,
238 /* 0b */	INVALID,
239 /* 0c */	INVALID,
240 /* 0d */	INVALID,
241 /* 0e */	INVALID,
242 /* 0f */	INVALID,
243 
244 /* 10 */	INVALID,
245 /* 11 */	INVALID,
246 /* 12 */	INVALID,
247 /* 13 */	INVALID,
248 /* 14 */	INVALID,
249 /* 15 */	INVALID,
250 /* 16 */	INVALID,
251 /* 17 */	INVALID,
252 /* 18 */	INVALID,
253 /* 19 */	INVALID,
254 /* 1a */	INVALID,
255 /* 1b */	INVALID,
256 /* 1c */	KEY(108),	/* Enter (num) */
257 /* 1d */	KEY(64),	/* R Ctrl */
258 /* 1e */	INVALID,
259 /* 1f */	INVALID,
260 
261 /* 20 */	KEY(235),	/* Mute */
262 /* 21 */	INVALID,
263 /* 22 */	INVALID,
264 /* 23 */	INVALID,
265 /* 24 */	INVALID,
266 /* 25 */	INVALID,
267 /* 26 */	INVALID,
268 /* 27 */	INVALID,
269 /* 28 */	INVALID,
270 /* 29 */	INVALID,
271 /* 2a */	INVALID,
272 /* 2b */	INVALID,
273 /* 2c */	INVALID,
274 /* 2d */	INVALID,
275 /* 2e */	KEY(234),	/* Volume Down */
276 /* 2f */	INVALID,
277 
278 /* 30 */	KEY(233),	/* Volume Up */
279 /* 31 */	INVALID,
280 /* 32 */	INVALID,
281 /* 33 */	INVALID,
282 /* 34 */	INVALID,
283 /* 35 */	KEY(95),	/* / (num) */
284 /* 36 */	INVALID,
285 /* 37 */	KEY(124),	/* PrintScreen (no Alt) */
286 /* 38 */	KEY(62),	/* R Alt */
287 /* 39 */	INVALID,
288 /* 3a */	INVALID,
289 /* 3b */	INVALID,
290 /* 3c */	INVALID,
291 /* 3d */	INVALID,
292 /* 3e */	INVALID,
293 /* 3f */	INVALID,
294 
295 /* 40 */	INVALID,
296 /* 41 */	INVALID,
297 /* 42 */	INVALID,
298 /* 43 */	INVALID,
299 /* 44 */	INVALID,
300 /* 45 */	INVALID,
301 /* 46 */	KEY(126),	/* Pause (with Cntl) */
302 /* 47 */	KEY(80),	/* Home (arrow) */
303 /* 48 */	KEY(83),	/* Up (arrow) */
304 /* 49 */	KEY(85),	/* PgUp (arrow) */
305 /* 4a */	INVALID,
306 /* 4b */	KEY(79),	/* Left (arrow) */
307 /* 4c */	INVALID,
308 /* 4d */	KEY(89),	/* Right (arrow) */
309 /* 4e */	INVALID,
310 /* 4f */	KEY(81),	/* End (arrow) */
311 
312 /* 50 */	KEY(84),	/* Down (arrow) */
313 /* 51 */	KEY(86),	/* PgDn (arrow) */
314 /* 52 */	KEY(75),	/* Insert (arrow) */
315 /* 53 */	KEY(76),	/* Delete (arrow) */
316 /* 54 */	INVALID,
317 /* 55 */	INVALID,
318 /* 56 */	INVALID,
319 /* 57 */	INVALID,
320 /* 58 */	INVALID,
321 /* 59 */	INVALID,
322 /* 5a */	INVALID,
323 /* 5b */	KEY(59),	/* L Window (104-key) */
324 /* 5c */	KEY(63),	/* R Window (104-key) */
325 /* 5d */	KEY(65),	/* Menu (104-key) */
326 /* 5e */	INVALID,
327 /* 5f */	INVALID,
328 
329 /* 60 */	INVALID,
330 /* 61 */	INVALID,
331 /* 62 */	INVALID,
332 /* 63 */	INVALID,
333 /* 64 */	INVALID,
334 /* 65 */	INVALID,
335 /* 66 */	INVALID,
336 /* 67 */	INVALID,
337 /* 68 */	INVALID,
338 /* 69 */	INVALID,
339 /* 6a */	INVALID,
340 /* 6b */	INVALID,
341 /* 6c */	INVALID,
342 /* 6d */	INVALID,
343 /* 6e */	INVALID,
344 /* 6f */	INVALID,
345 
346 /* 70 */	INVALID,
347 /* 71 */	INVALID,
348 /* 72 */	INVALID,
349 /* 73 */	INVALID,
350 /* 74 */	INVALID,
351 /* 75 */	INVALID,
352 /* 76 */	INVALID,
353 /* 77 */	INVALID,
354 /* 78 */	INVALID,
355 /* 79 */	INVALID,
356 /* 7a */	INVALID,
357 /* 7b */	INVALID,
358 /* 7c */	INVALID,
359 /* 7d */	INVALID,
360 /* 7e */	INVALID,
361 };
362 
363 
364 /*
365  *	Parse table for the base keyboard state.  The index is the start of
366  *	a new sequence.
367  *
368  * Questionable or unusual cases:
369  * 02		On some SPARC keyboards, this is the scan code for the STOP
370  *		key.  The KEY() value was chosen so that it maps to a
371  *		HOLE entry in the keytables in kb8042_keytables.c; therefore,
372  *		the STOP key code is only translated properly when kb8042
373  *		is "emulating" a USB keyboard (which it is by default--
374  *		see conskbd.c).
375  * 7f		Old kd code says this is an 84-key SysReq.  Manual says no.
376  * 87		Old kd code says 1 (num).  Manual says no.
377  * 8c		Old kd code says / (num).  Manual says no.
378  * aa		POST OK.  Handled by code.
379  * e0		Extend prefix.  Handled by code. (switches to E0 table)
380  * e1		Extend prefix.  Handled by code.  (Pause key only)
381  * f0		Break prefix.  Handled by code.
382  * f1		Korean Hangul/Hanja key.  Handled by code.
383  * f2		Korean Hangul key.  Handled by code.
384  * ff		Keyboard internal buffer overrun.  Handled by code.
385  *
386  * Other values past the end of the table are treated as INVALID.
387  */
388 
389 static const unsigned char	keytab_base_set2[] = {
390 /* scan		state		keycap */
391 /* 00 */	INVALID,
392 /* 01 */	KEY(120),	/* F9 */
393 #if defined(__sparc)
394 /* 02 */	KEY(K8042_STOP), /* STOP */
395 #else
396 /* 02 */	INVALID,	/* F7?  Old code says so but manual doesn't */
397 #endif
398 /* 03 */	KEY(116),	/* F5 */
399 /* 04 */	KEY(114),	/* F3 */
400 /* 05 */	KEY(112),	/* F1 */
401 /* 06 */	KEY(113),	/* F2 */
402 /* 07 */	KEY(123),	/* F12 */
403 /* 08 */	INVALID,
404 /* 09 */	KEY(121),	/* F10 */
405 /* 0a */	KEY(119),	/* F8 */
406 /* 0b */	KEY(117),	/* F6 */
407 /* 0c */	KEY(115),	/* F4 */
408 /* 0d */	KEY(16),	/* tab */
409 /* 0e */	KEY(1),		/* ` */
410 /* 0f */	INVALID,
411 /* 10 */	INVALID,
412 /* 11 */	KEY(60),	/* L Alt */
413 /* 12 */	KEY(44),	/* L Shift */
414 /* 13 */	KEY(133),	/* Japanese 106-key */
415 /* 14 */	KEY(58),	/* L Ctrl */
416 /* 15 */	KEY(17),	/* Q */
417 /* 16 */	KEY(2),		/* 1 */
418 /* 17 */	INVALID,
419 /* 18 */	INVALID,
420 /* 19 */	INVALID,
421 /* 1a */	KEY(46),	/* Z */
422 /* 1b */	KEY(32),	/* S */
423 /* 1c */	KEY(31),	/* A */
424 /* 1d */	KEY(18),	/* W */
425 /* 1e */	KEY(3),		/* 2 */
426 /* 1f */	INVALID,
427 /* 20 */	INVALID,
428 /* 21 */	KEY(48),	/* C */
429 /* 22 */	KEY(47),	/* X */
430 /* 23 */	KEY(33),	/* D */
431 /* 24 */	KEY(19),	/* E */
432 /* 25 */	KEY(5),		/* 4 */
433 /* 26 */	KEY(4),		/* 3 */
434 /* 27 */	INVALID,
435 /* 28 */	INVALID,
436 /* 29 */	KEY(61),	/* Space */
437 /* 2a */	KEY(49),	/* V */
438 /* 2b */	KEY(34),	/* F */
439 /* 2c */	KEY(21),	/* T */
440 /* 2d */	KEY(20),	/* R */
441 /* 2e */	KEY(6),		/* 5 */
442 /* 2f */	INVALID,
443 /* 30 */	INVALID,
444 /* 31 */	KEY(51),	/* N */
445 /* 32 */	KEY(50),	/* B */
446 /* 33 */	KEY(36),	/* H */
447 /* 34 */	KEY(35),	/* G */
448 /* 35 */	KEY(22),	/* Y */
449 /* 36 */	KEY(7),		/* 6 */
450 /* 37 */	INVALID,
451 /* 38 */	INVALID,
452 /* 39 */	INVALID,
453 /* 3a */	KEY(52),	/* M */
454 /* 3b */	KEY(37),	/* J */
455 /* 3c */	KEY(23),	/* U */
456 /* 3d */	KEY(8),		/* 7 */
457 /* 3e */	KEY(9),		/* 8 */
458 /* 3f */	INVALID,
459 /* 40 */	INVALID,
460 /* 41 */	KEY(53),	/* , */
461 /* 42 */	KEY(38),	/* K */
462 /* 43 */	KEY(24),	/* I */
463 /* 44 */	KEY(25),	/* O */
464 /* 45 */	KEY(11),	/* 0 */
465 /* 46 */	KEY(10),	/* 9 */
466 /* 47 */	INVALID,
467 /* 48 */	INVALID,
468 /* 49 */	KEY(54),	/* . */
469 /* 4a */	KEY(55),	/* / */
470 /* 4b */	KEY(39),	/* L */
471 /* 4c */	KEY(40),	/* ; */
472 /* 4d */	KEY(26),	/* P */
473 /* 4e */	KEY(12),	/* - */
474 /* 4f */	INVALID,
475 /* 50 */	INVALID,
476 /* 51 */	KEY(56),	/* Japanese 106-key */
477 /* 52 */	KEY(41),	/* ' */
478 /* 53 */	INVALID,
479 /* 54 */	KEY(27),	/* [ */
480 /* 55 */	KEY(13),	/* = */
481 /* 56 */	INVALID,
482 /* 57 */	INVALID,
483 /* 58 */	KEY(30),	/* CapsLock */
484 /* 59 */	KEY(57),	/* R Shift */
485 /* 5a */	KEY(43),	/* Enter (main) */
486 /* 5b */	KEY(28),	/* ] */
487 /* 5c */	INVALID,
488 /* 5d */	KEY(29),	/* \, key 42 for 102-key */
489 /* 5e */	INVALID,
490 /* 5f */	INVALID,
491 /* 60 */	INVALID,
492 /* 61 */	KEY(45),	/* 102-key only, typically </> */
493 /* 62 */	INVALID,
494 /* 63 */	INVALID,
495 /* 64 */	KEY(132),	/* Japanese 106-key */
496 /* 65 */	INVALID,
497 /* 66 */	KEY(15),	/* backspace */
498 /* 67 */	KEY(131),	/* Japanese 106-key */
499 /* 68 */	INVALID,
500 /* 69 */	KEY(93),	/* 1 (num) */
501 /* 6a */	KEY(14),	/* Japanese 106-key */
502 /* 6b */	KEY(92),	/* 4 (num) */
503 /* 6c */	KEY(91),	/* 7 (num) */
504 /* 6d */	INVALID,
505 /* 6e */	INVALID,
506 /* 6f */	INVALID,
507 /* 70 */	KEY(99),	/* 0 (num) */
508 /* 71 */	KEY(104),	/* . (num) */
509 /* 72 */	KEY(98),	/* 2 (num) */
510 /* 73 */	KEY(97),	/* 5 (num) */
511 /* 74 */	KEY(102),	/* 6 (num) */
512 /* 75 */	KEY(96),	/* 8 (num) */
513 /* 76 */	KEY(110),	/* Esc */
514 /* 77 */	KEY(90),	/* NumLock */
515 /* 78 */	KEY(122),	/* F11 */
516 /* 79 */	KEY(106),	/* + (num) */
517 /* 7a */	KEY(103),	/* 3 (num) */
518 /* 7b */	KEY(105),	/* - (num) */
519 /* 7c */	KEY(100),	/* * (num) */
520 /* 7d */	KEY(101),	/* 9 (num) */
521 /* 7e */	KEY(125),	/* Scroll Lock */
522 /* 7f */	INVALID,	/* 84-key SysReq?  Manual says no. */
523 /* 80 */	INVALID,
524 /* 81 */	INVALID,
525 /* 82 */	INVALID,
526 /* 83 */	KEY(118),	/* F7 */
527 /* 84 */	KEY(124),	/* PrintScreen (w/ Alt = SysRq) */
528 };
529 
530 /*
531  * Parse table after receiving an E0 prefix code.
532  *
533  * Generally speaking, keys that were added on the 101-key keyboard are
534  * represented as an E0 followed by the code for an 84-key key.  Software
535  * ignorant of the 101-key keyboard ignores the E0 and so is handled
536  * compatibly.  Many of these variants involve "fake" shift presses
537  * and releases for compatibility; these are also prefixed with E0.
538  * We ignore these fake shifts.
539  */
540 static const unsigned char	keytab_e0_set2[] = {
541 /* 00 */	INVALID,
542 /* 01 */	INVALID,
543 /* 02 */	INVALID,
544 /* 03 */	INVALID,
545 /* 04 */	INVALID,
546 /* 05 */	INVALID,
547 /* 06 */	INVALID,
548 /* 07 */	INVALID,
549 /* 08 */	INVALID,
550 /* 09 */	INVALID,
551 /* 0a */	INVALID,
552 /* 0b */	INVALID,
553 /* 0c */	INVALID,
554 /* 0d */	INVALID,
555 /* 0e */	INVALID,
556 /* 0f */	INVALID,
557 /* 10 */	INVALID,
558 /* 11 */	KEY(62),	/* R Alt */
559 /* 12 */	IGNORE,		/* Fake L Shift */
560 /* 13 */	INVALID,
561 /* 14 */	KEY(64),	/* R Ctrl */
562 /* 15 */	INVALID,
563 /* 16 */	INVALID,
564 /* 17 */	INVALID,
565 /* 18 */	INVALID,
566 /* 19 */	INVALID,
567 /* 1a */	INVALID,
568 /* 1b */	INVALID,
569 /* 1c */	INVALID,
570 /* 1d */	INVALID,
571 /* 1e */	INVALID,
572 /* 1f */	KEY(59),	/* L Window (104-key) */
573 /* 20 */	INVALID,
574 /* 21 */	INVALID,
575 /* 22 */	INVALID,
576 /* 23 */	INVALID,
577 /* 24 */	INVALID,
578 /* 25 */	INVALID,
579 /* 26 */	INVALID,
580 /* 27 */	KEY(63),	/* R Window (104-key) */
581 /* 28 */	INVALID,
582 /* 29 */	INVALID,
583 /* 2a */	INVALID,
584 /* 2b */	INVALID,
585 /* 2c */	INVALID,
586 /* 2d */	INVALID,
587 /* 2e */	INVALID,
588 /* 2f */	KEY(65),	/* Menu (104-key) */
589 /* 30 */	INVALID,
590 /* 31 */	INVALID,
591 /* 32 */	INVALID,
592 /* 33 */	INVALID,
593 /* 34 */	INVALID,
594 /* 35 */	INVALID,
595 /* 36 */	INVALID,
596 /* 37 */	INVALID,
597 /* 38 */	INVALID,
598 /* 39 */	INVALID,
599 /* 3a */	INVALID,
600 /* 3b */	INVALID,
601 /* 3c */	INVALID,
602 /* 3d */	INVALID,
603 /* 3e */	INVALID,
604 /* 3f */	INVALID,
605 /* 40 */	INVALID,
606 /* 41 */	INVALID,
607 /* 42 */	INVALID,
608 /* 43 */	INVALID,
609 /* 44 */	INVALID,
610 /* 45 */	INVALID,
611 /* 46 */	INVALID,
612 /* 47 */	INVALID,
613 /* 48 */	INVALID,
614 /* 49 */	INVALID,
615 /* 4a */	KEY(95),	/* / (num) */
616 /* 4b */	INVALID,
617 /* 4c */	INVALID,
618 /* 4d */	INVALID,
619 /* 4e */	INVALID,
620 /* 4f */	INVALID,
621 /* 50 */	INVALID,
622 /* 51 */	INVALID,
623 /* 52 */	INVALID,
624 /* 53 */	INVALID,
625 /* 54 */	INVALID,
626 /* 55 */	INVALID,
627 /* 56 */	INVALID,
628 /* 57 */	INVALID,
629 /* 58 */	INVALID,
630 /* 59 */	IGNORE,		/* Fake R Shift */
631 /* 5a */	KEY(108),	/* Enter (num) */
632 /* 5b */	INVALID,
633 /* 5c */	INVALID,
634 /* 5d */	INVALID,
635 /* 5e */	INVALID,
636 /* 5f */	INVALID,
637 /* 60 */	INVALID,
638 /* 61 */	INVALID,
639 /* 62 */	INVALID,
640 /* 63 */	INVALID,
641 /* 64 */	INVALID,
642 /* 65 */	INVALID,
643 /* 66 */	INVALID,
644 /* 67 */	INVALID,
645 /* 68 */	INVALID,
646 /* 69 */	KEY(81),	/* End (arrow) */
647 /* 6a */	INVALID,
648 /* 6b */	KEY(79),	/* Left (arrow) */
649 /* 6c */	KEY(80),	/* Home (arrow) */
650 /* 6d */	INVALID,
651 /* 6e */	INVALID,
652 /* 6f */	INVALID,
653 /* 70 */	KEY(75),	/* Insert (arrow) */
654 /* 71 */	KEY(76),	/* Delete (arrow) */
655 /* 72 */	KEY(84),	/* Down (arrow) */
656 /* 73 */	INVALID,
657 /* 74 */	KEY(89),	/* Right (arrow) */
658 /* 75 */	KEY(83),	/* Up (arrow) */
659 /* 76 */	INVALID,
660 /* 77 */	INVALID,
661 /* 78 */	INVALID,
662 /* 79 */	INVALID,
663 /* 7a */	KEY(86),	/* PgDn (arrow) */
664 /* 7b */	INVALID,
665 /* 7c */	KEY(124),	/* PrintScreen (no Alt) */
666 /* 7d */	KEY(85),	/* PgUp (arrow) */
667 /* 7e */	KEY(126),	/* Pause (w/Ctrl = Break) */
668 };
669 
670 
671 /*
672  * Initialize the translation state machine.
673  */
674 int
675 KeyboardConvertScan_init(struct kb8042 *kb8042, int scanset)
676 {
677 	kb8042->parse_scan_state = STATE_IDLE;
678 	kb8042->break_received = 0;
679 
680 	if (scanset == 1) {
681 		KeyboardConvertScan_fn = &KeyboardConvertScan_set1;
682 		keytab_base = keytab_base_set1;
683 		keytab_base_length = NELEM(keytab_base_set1);
684 		keytab_e0 = keytab_e0_set1;
685 		keytab_e0_length = NELEM(keytab_e0_set1);
686 	} else if (scanset == 2) {
687 		KeyboardConvertScan_fn = &KeyboardConvertScan_set2;
688 		keytab_base = keytab_base_set2;
689 		keytab_base_length = NELEM(keytab_base_set2);
690 		keytab_e0 = keytab_e0_set2;
691 		keytab_e0_length = NELEM(keytab_e0_set2);
692 	} else {
693 		return (DDI_FAILURE);
694 	}
695 
696 	return (DDI_SUCCESS);
697 }
698 
699 /*
700  *	KeyboardConvertScan(*kb8042, scan, *keynum, *state
701  *		*synthetic_release_needed)
702  *
703  *	State machine that takes scan codes from the keyboard and resolves
704  *	them to key numbers using the above tables.  Returns B_TRUE if this
705  *	scan code completes a scan code sequence, in which case "keynum",
706  *	"state", and "synthetic_release_needed" will be filled in correctly.
707  *
708  *	"synthetic_release_needed" is a hack to handle the additional two
709  *	keys on a Korean keyboard.  They report press only, so we tell the
710  *	upper layer to synthesize the release.
711  */
712 boolean_t
713 KeyboardConvertScan(
714     struct kb8042	*kb8042,
715     unsigned char	scan,
716     int			*keynum,
717     enum keystate	*state,
718     boolean_t		*synthetic_release_needed)
719 {
720 	ASSERT(KeyboardConvertScan_fn != NULL);
721 
722 	return ((*KeyboardConvertScan_fn)(kb8042, scan, keynum, state,
723 	    synthetic_release_needed));
724 }
725 
726 boolean_t
727 KeyboardConvertScan_set1(
728     struct kb8042	*kb8042,
729     unsigned char	scan,
730     int			*keynum,
731     enum keystate	*state,
732     boolean_t		*synthetic_release_needed)
733 {
734 	*synthetic_release_needed = B_FALSE;
735 	*state = KEY_PRESSED;
736 
737 	switch (scan) {
738 	/*
739 	 * First, handle special cases.
740 	 * ACK has already been handled by our caller.
741 	 */
742 	case KB_ERROR:
743 		/*
744 		 * Perhaps we should reset state here,
745 		 * since we no longer know what's going on.
746 		 */
747 		return (B_FALSE);
748 	case KB_POST_FAIL:
749 		/*
750 		 * Perhaps we should reset the LEDs now.
751 		 * If so, this check should probably be in the main line.
752 		 * Perhaps we should tell the higher layers that the
753 		 * keyboard has been reset.
754 		 */
755 		/*
756 		 * Reset to idle
757 		 */
758 		kb8042->parse_scan_state = STATE_IDLE;
759 		return (B_FALSE);
760 
761 	case KXT_EXTEND:
762 	case KXT_EXTEND2:
763 	case KXT_HANGUL_HANJA:
764 	case KXT_HANGUL:
765 		/*
766 		 * Exclude these keys from the "default" test below.
767 		 */
768 		break;
769 
770 	default:
771 		/*
772 		 * See if it was a key release.
773 		 */
774 		if (scan > 0x80) {
775 			*state = KEY_RELEASED;
776 			scan -= 0x80;
777 		}
778 		break;
779 	}
780 
781 	if (kb8042->break_received) {
782 		*state = KEY_RELEASED;
783 		kb8042->break_received = 0;
784 	}
785 
786 	switch (kb8042->parse_scan_state) {
787 	case STATE_IDLE:
788 		switch (scan) {
789 		case KXT_EXTEND:
790 			kb8042->parse_scan_state = STATE_E0;
791 			return (B_FALSE);
792 
793 		case KXT_EXTEND2:
794 			kb8042->parse_scan_state = STATE_E1;
795 			return (B_FALSE);
796 
797 		/*
798 		 * We could do the next two in the table, but it would
799 		 * require nearly doubling the size of the table.
800 		 *
801 		 * Also, for some stupid reason these two report presses
802 		 * only.  We tell the upper layer to synthesize a release.
803 		 */
804 		case KXT_HANGUL_HANJA:
805 			*keynum = KEY(150);
806 			*synthetic_release_needed = B_TRUE;
807 			break;
808 
809 		case KXT_HANGUL:
810 			*keynum = KEY(151);
811 			*synthetic_release_needed = B_TRUE;
812 			break;
813 
814 		default:
815 			/*
816 			 * Regular scan code
817 			 */
818 			if (scan < keytab_base_length)
819 				*keynum = keytab_base[scan];
820 			else
821 				*keynum = INVALID;
822 			break;
823 		}
824 		break;
825 
826 	case STATE_E0:		/* Mostly 101-key additions */
827 		if (scan < keytab_e0_length)
828 			*keynum = keytab_e0[scan];
829 		else
830 			*keynum = INVALID;
831 		break;
832 
833 	case STATE_E1:		/* Pause key only */
834 		switch (scan) {
835 		case 0x1d:
836 			kb8042->parse_scan_state = STATE_E1_1D;
837 			return (B_FALSE);
838 		default:
839 			*keynum = INVALID;
840 			break;
841 		}
842 		break;
843 
844 	case STATE_E1_1D:	/* Pause key only */
845 		switch (scan) {
846 		case 0x45:
847 			*keynum = KEY(126);	/* Pause */
848 			break;
849 		default:
850 			*keynum = INVALID;
851 			break;
852 		}
853 		break;
854 	}
855 
856 	/*
857 	 * The results (*keynum, *state, and *synthetic_release_needed)
858 	 * have been filled in, but they are valid only if we return
859 	 * B_TRUE which is only done below.  If we make it to here, we
860 	 * have completed a scan code sequence, so reset parse_scan_state.
861 	 */
862 
863 	kb8042->parse_scan_state = STATE_IDLE;
864 
865 	switch (*keynum) {
866 	case KEYIGN:				/* not a key, nor an error */
867 		return (B_FALSE);		/* also not a final keycode */
868 
869 	case KEYBAD:		/* not part of a legit sequence? */
870 		return (B_FALSE);	/* and return not a final keycode */
871 
872 	default:
873 		/*
874 		 * If we're here, it's a valid keycode.  We've already
875 		 * filled in the return values; return success.
876 		 */
877 		return (B_TRUE);		/* resolved to a key */
878 	}
879 }
880 
881 /*
882  *	KeyboardConvertScan(*kb8042, scan, *keynum, *state
883  *		*synthetic_release_needed)
884  *
885  *	State machine that takes scan codes from the keyboard and resolves
886  *	them to key numbers using the above tables.  Returns B_TRUE if this
887  *	scan code completes a scan code sequence, in which case "keynum",
888  *	"state", and "synthetic_release_needed" will be filled in correctly.
889  *
890  *	"synthetic_release_needed" is a hack to handle the additional two
891  *	keys on a Korean keyboard.  They report press only, so we tell the
892  *	upper layer to synthesize the release.
893  */
894 boolean_t
895 KeyboardConvertScan_set2(
896     struct kb8042	*kb8042,
897     unsigned char	scan,
898     int			*keynum,
899     enum keystate	*state,
900     boolean_t		*synthetic_release_needed)
901 {
902 	*synthetic_release_needed = B_FALSE;
903 	*state = KEY_PRESSED;
904 
905 	switch (scan) {
906 	/*
907 	 * First, handle special cases.
908 	 * ACK has already been handled by our caller.
909 	 */
910 
911 	/*
912 	 * KAT_BREAK is 0xF0. It is the same as the break code for Japanese
913 	 * key 133.
914 	 * Therefore we don't treat it specially here.
915 	 */
916 	case KAT_BREAK:
917 		/* Switch states so we can recognize the code that follows */
918 		kb8042->break_received = 1;
919 		return (B_FALSE);	/* not a final keycode */
920 
921 	case KB_ERROR:
922 		/*
923 		 * Perhaps we should reset state here,
924 		 * since we no longer know what's going on.
925 		 */
926 		return (B_FALSE);
927 
928 	case KB_POST_OK:
929 	case KB_POST_FAIL:
930 		/*
931 		 * Perhaps we should reset the LEDs now.
932 		 * If so, this check should probably be in the main line.
933 		 * Perhaps we should tell the higher layers that the
934 		 * keyboard has been reset.
935 		 */
936 		/*
937 		 * Reset to idle
938 		 */
939 		kb8042->parse_scan_state = STATE_IDLE;
940 		return (B_FALSE);
941 	}
942 
943 	if (kb8042->break_received) {
944 		*state = KEY_RELEASED;
945 		kb8042->break_received = 0;
946 	}
947 
948 	switch (kb8042->parse_scan_state) {
949 	case STATE_IDLE:
950 		switch (scan) {
951 		case KXT_EXTEND:
952 			kb8042->parse_scan_state = STATE_E0;
953 			return (B_FALSE);
954 
955 		case KXT_EXTEND2:
956 			kb8042->parse_scan_state = STATE_E1;
957 			return (B_FALSE);
958 
959 		/*
960 		 * We could do the next two in the table, but it would
961 		 * require nearly doubling the size of the table.
962 		 *
963 		 * Also, for some stupid reason these two report presses
964 		 * only.  We tell the upper layer to synthesize a release.
965 		 */
966 		case KXT_HANGUL_HANJA:
967 			*keynum = KEY(150);
968 			*synthetic_release_needed = B_TRUE;
969 			break;
970 
971 		case KXT_HANGUL:
972 			*keynum = KEY(151);
973 			*synthetic_release_needed = B_TRUE;
974 			break;
975 
976 		default:
977 			/*
978 			 * Regular scan code
979 			 */
980 			if (scan < keytab_base_length)
981 				*keynum = keytab_base[scan];
982 			else
983 				*keynum = INVALID;
984 			break;
985 		}
986 		break;
987 
988 	case STATE_E0:		/* Mostly 101-key additions */
989 		if (scan < keytab_e0_length)
990 			*keynum = keytab_e0[scan];
991 		else
992 			*keynum = INVALID;
993 		break;
994 
995 	case STATE_E1:		/* Pause key only */
996 		switch (scan) {
997 		case 0x14:
998 			kb8042->parse_scan_state = STATE_E1_14;
999 			return (B_FALSE);
1000 		default:
1001 			*keynum = INVALID;
1002 			break;
1003 		}
1004 		break;
1005 
1006 	case STATE_E1_14:	/* Pause key only */
1007 		if (scan == 0x77) {
1008 			kb8042->parse_scan_state = STATE_E1_14_77;
1009 			return (B_FALSE);
1010 		} else {
1011 			*keynum = INVALID;
1012 		}
1013 		break;
1014 
1015 	case STATE_E1_14_77:
1016 		if (scan == 0xE1) {
1017 			kb8042->parse_scan_state = STATE_E1_14_77_E1;
1018 			return (B_FALSE);
1019 		} else {
1020 			*keynum = INVALID;
1021 		}
1022 		break;
1023 
1024 	case STATE_E1_14_77_E1:
1025 		if (scan == 0xF0) {
1026 			kb8042->parse_scan_state = STATE_E1_14_77_E1_F0;
1027 			return (B_FALSE);
1028 		} else {
1029 			*keynum = INVALID;
1030 		}
1031 		break;
1032 
1033 	case STATE_E1_14_77_E1_F0:
1034 		if (scan == 0x14) {
1035 			kb8042->parse_scan_state = STATE_E1_14_77_E1_F0_14;
1036 			return (B_FALSE);
1037 		} else {
1038 			*keynum = INVALID;
1039 		}
1040 		break;
1041 
1042 	case STATE_E1_14_77_E1_F0_14:
1043 		if (scan == 0xF0) {
1044 			kb8042->parse_scan_state = STATE_E1_14_77_E1_F0_14_F0;
1045 			return (B_FALSE);
1046 		} else {
1047 			*keynum = INVALID;
1048 		}
1049 		break;
1050 
1051 	case STATE_E1_14_77_E1_F0_14_F0:
1052 		if (scan == 0x77) {
1053 			*keynum = KEY(126);	/* Pause */
1054 		} else {
1055 			*keynum = INVALID;
1056 		}
1057 		break;
1058 	}
1059 
1060 	/*
1061 	 * The results (*keynum, *state, and *synthetic_release_needed)
1062 	 * have been filled in, but they are valid only if we return
1063 	 * B_TRUE which is only done below.  If we make it to here, we
1064 	 * have completed a scan code sequence, so reset parse_scan_state.
1065 	 */
1066 
1067 	if (kb8042->break_received) {
1068 		*state = KEY_RELEASED;
1069 		kb8042->break_received = 0;
1070 	}
1071 
1072 	kb8042->parse_scan_state = STATE_IDLE;
1073 
1074 	switch (*keynum) {
1075 	case KEYIGN:				/* not a key, nor an error */
1076 		return (B_FALSE);		/* also not a final keycode */
1077 
1078 	case KEYBAD:		/* not part of a legit sequence? */
1079 		return (B_FALSE);	/* and return not a final keycode */
1080 
1081 	default:
1082 		/*
1083 		 * If we're here, it's a valid keycode.  We've already
1084 		 * filled in the return values; return success.
1085 		 */
1086 		return (B_TRUE);		/* resolved to a key */
1087 	}
1088 }
1089