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1339 cejka 1
/*
2
 * Copyright (C) 2001-2004 Jakub Jermar
3
 * Copyright (C) 2006 Josef Cejka
4
 * All rights reserved.
5
 *
6
 * Redistribution and use in source and binary forms, with or without
7
 * modification, are permitted provided that the following conditions
8
 * are met:
9
 *
10
 * - Redistributions of source code must retain the above copyright
11
 *   notice, this list of conditions and the following disclaimer.
12
 * - Redistributions in binary form must reproduce the above copyright
13
 *   notice, this list of conditions and the following disclaimer in the
14
 *   documentation and/or other materials provided with the distribution.
15
 * - The name of the author may not be used to endorse or promote products
16
 *   derived from this software without specific prior written permission.
17
 *
18
 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
19
 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
20
 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
21
 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
22
 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
23
 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
24
 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
25
 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
26
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
27
 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
28
 */
29
 
1649 cejka 30
/** @addtogroup kbdia32 ia32
1657 cejka 31
 * @brief	HelenOS ia32 / amd64 arch dependent parts of uspace keyboard handler.
1649 cejka 32
 * @ingroup  kbd
33
 * @{
34
 */ 
35
/** @file
1657 cejka 36
 * @ingroup kbdamd64
1649 cejka 37
 */
38
 
1339 cejka 39
#include <arch/kbd.h>
1353 jermar 40
#include <ipc/ipc.h>
1694 palkovsky 41
#include <unistd.h>
42
#include <kbd.h>
43
#include <keys.h>
1339 cejka 44
 
1694 palkovsky 45
/* Interesting bits for status register */
46
#define i8042_OUTPUT_FULL  0x1
47
#define i8042_INPUT_FULL   0x2
48
#define i8042_MOUSE_DATA   0x20
49
 
50
/* Command constants */
51
#define i8042_CMD_KBD 0x60
52
#define i8042_CMD_MOUSE  0xd4
53
 
54
/* Keyboard cmd byte */
55
#define i8042_KBD_IE        0x1
56
#define i8042_MOUSE_IE      0x2
57
#define i8042_KBD_DISABLE   0x10
58
#define i8042_MOUSE_DISABLE 0x20
59
#define i8042_KBD_TRANSLATE 0x40
60
 
61
/* Mouse constants */
62
#define MOUSE_OUT_INIT  0xf4
63
#define MOUSE_ACK       0xfa
64
 
65
 
1603 vana 66
#define SPECIAL		255
1339 cejka 67
#define KEY_RELEASE	0x80
68
 
69
/**
70
 * These codes read from i8042 data register are silently ignored.
71
 */
72
#define IGNORE_CODE	0x7f
73
 
74
#define PRESSED_SHIFT		(1<<0)
75
#define PRESSED_CAPSLOCK	(1<<1)
76
#define LOCKED_CAPSLOCK		(1<<0)
77
 
78
/** Scancodes. */
79
#define SC_ESC		0x01
80
#define SC_BACKSPACE	0x0e
81
#define SC_LSHIFT	0x2a
82
#define SC_RSHIFT	0x36
83
#define SC_CAPSLOCK	0x3a
84
#define SC_SPEC_ESCAPE  0xe0
85
#define SC_LEFTARR      0x4b
86
#define SC_RIGHTARR     0x4d
87
#define SC_UPARR        0x48
88
#define SC_DOWNARR      0x50
89
#define SC_DELETE       0x53
90
#define SC_HOME         0x47
91
#define SC_END          0x4f
92
 
1560 vana 93
#define FUNCTION_KEYS 0x100
94
 
1339 cejka 95
static volatile int keyflags;		/**< Tracking of multiple keypresses. */
96
static volatile int lockflags;		/**< Tracking of multiple keys lockings. */
97
 
98
/** Primary meaning of scancodes. */
1560 vana 99
static int sc_primary_map[] = {
1339 cejka 100
	SPECIAL, /* 0x00 */
101
	SPECIAL, /* 0x01 - Esc */
102
	'1', '2', '3', '4', '5', '6', '7', '8', '9', '0', '-', '=',
103
	'\b', /* 0x0e - Backspace */
104
	'\t', 'q', 'w', 'e', 'r', 't', 'y', 'u', 'i', 'o', 'p', '[', ']', '\n',
105
	SPECIAL, /* 0x1d - LCtrl */
106
	'a', 's', 'd', 'f', 'g', 'h', 'j', 'k', 'l', ';', '\'',
107
	'`',
108
	SPECIAL, /* 0x2a - LShift */ 
109
	'\\',
110
	'z', 'x', 'c', 'v', 'b', 'n', 'm', ',', '.', '/',
111
	SPECIAL, /* 0x36 - RShift */
112
	'*',
113
	SPECIAL, /* 0x38 - LAlt */
114
	' ',
115
	SPECIAL, /* 0x3a - CapsLock */
1560 vana 116
	(FUNCTION_KEYS | 1), /* 0x3b - F1 */
117
	(FUNCTION_KEYS | 2), /* 0x3c - F2 */
118
	(FUNCTION_KEYS | 3), /* 0x3d - F3 */
119
	(FUNCTION_KEYS | 4), /* 0x3e - F4 */
120
	(FUNCTION_KEYS | 5), /* 0x3f - F5 */
121
	(FUNCTION_KEYS | 6), /* 0x40 - F6 */
122
	(FUNCTION_KEYS | 7), /* 0x41 - F7 */
123
	(FUNCTION_KEYS | 8), /* 0x42 - F8 */
124
	(FUNCTION_KEYS | 9), /* 0x43 - F9 */
125
	(FUNCTION_KEYS | 10), /* 0x44 - F10 */
1339 cejka 126
	SPECIAL, /* 0x45 - NumLock */
127
	SPECIAL, /* 0x46 - ScrollLock */
128
	'7', '8', '9', '-',
129
	'4', '5', '6', '+',
130
	'1', '2', '3',
131
	'0', '.',
132
	SPECIAL, /* 0x54 - Alt-SysRq */
133
	SPECIAL, /* 0x55 - F11/F12/PF1/FN */
134
	SPECIAL, /* 0x56 - unlabelled key next to LAlt */
1566 cejka 135
	(FUNCTION_KEYS | 11), /* 0x57 - F11 */
136
	(FUNCTION_KEYS | 12), /* 0x58 - F12 */
1339 cejka 137
	SPECIAL, /* 0x59 */
138
	SPECIAL, /* 0x5a */
139
	SPECIAL, /* 0x5b */
140
	SPECIAL, /* 0x5c */
141
	SPECIAL, /* 0x5d */
142
	SPECIAL, /* 0x5e */
143
	SPECIAL, /* 0x5f */
144
	SPECIAL, /* 0x60 */
145
	SPECIAL, /* 0x61 */
146
	SPECIAL, /* 0x62 */
147
	SPECIAL, /* 0x63 */
148
	SPECIAL, /* 0x64 */
149
	SPECIAL, /* 0x65 */
150
	SPECIAL, /* 0x66 */
151
	SPECIAL, /* 0x67 */
152
	SPECIAL, /* 0x68 */
153
	SPECIAL, /* 0x69 */
154
	SPECIAL, /* 0x6a */
155
	SPECIAL, /* 0x6b */
156
	SPECIAL, /* 0x6c */
157
	SPECIAL, /* 0x6d */
158
	SPECIAL, /* 0x6e */
159
	SPECIAL, /* 0x6f */
160
	SPECIAL, /* 0x70 */
161
	SPECIAL, /* 0x71 */
162
	SPECIAL, /* 0x72 */
163
	SPECIAL, /* 0x73 */
164
	SPECIAL, /* 0x74 */
165
	SPECIAL, /* 0x75 */
166
	SPECIAL, /* 0x76 */
167
	SPECIAL, /* 0x77 */
168
	SPECIAL, /* 0x78 */
169
	SPECIAL, /* 0x79 */
170
	SPECIAL, /* 0x7a */
171
	SPECIAL, /* 0x7b */
172
	SPECIAL, /* 0x7c */
173
	SPECIAL, /* 0x7d */
174
	SPECIAL, /* 0x7e */
175
	SPECIAL, /* 0x7f */
176
};
177
 
178
/** Secondary meaning of scancodes. */
1566 cejka 179
static int sc_secondary_map[] = {
1339 cejka 180
	SPECIAL, /* 0x00 */
1644 vana 181
	0x1b, /* 0x01 - Esc */
1339 cejka 182
	'!', '@', '#', '$', '%', '^', '&', '*', '(', ')', '_', '+',
183
	SPECIAL, /* 0x0e - Backspace */
184
	'\t', 'Q', 'W', 'E', 'R', 'T', 'Y', 'U', 'I', 'O', 'P', '{', '}', '\n',
185
	SPECIAL, /* 0x1d - LCtrl */
186
	'A', 'S', 'D', 'F', 'G', 'H', 'J', 'K', 'L', ':', '"',
187
	'~',
188
	SPECIAL, /* 0x2a - LShift */ 
189
	'|',
190
	'Z', 'X', 'C', 'V', 'B', 'N', 'M', '<', '>', '?',
191
	SPECIAL, /* 0x36 - RShift */
192
	'*',
193
	SPECIAL, /* 0x38 - LAlt */
194
	' ',
195
	SPECIAL, /* 0x3a - CapsLock */
1504 cejka 196
	SPECIAL, /* 0x3b - F1 */
197
	SPECIAL, /* 0x3c - F2 */
198
	SPECIAL, /* 0x3d - F3 */
199
	SPECIAL, /* 0x3e - F4 */
200
	SPECIAL, /* 0x3f - F5 */
201
	SPECIAL, /* 0x40 - F6 */
202
	SPECIAL, /* 0x41 - F7 */
203
	SPECIAL, /* 0x42 - F8 */
204
	SPECIAL, /* 0x43 - F9 */
205
	SPECIAL, /* 0x44 - F10 */
1339 cejka 206
	SPECIAL, /* 0x45 - NumLock */
207
	SPECIAL, /* 0x46 - ScrollLock */
208
	'7', '8', '9', '-',
209
	'4', '5', '6', '+',
210
	'1', '2', '3',
211
	'0', '.',
212
	SPECIAL, /* 0x54 - Alt-SysRq */
213
	SPECIAL, /* 0x55 - F11/F12/PF1/FN */
214
	SPECIAL, /* 0x56 - unlabelled key next to LAlt */
215
	SPECIAL, /* 0x57 - F11 */
216
	SPECIAL, /* 0x58 - F12 */
217
	SPECIAL, /* 0x59 */
218
	SPECIAL, /* 0x5a */
219
	SPECIAL, /* 0x5b */
220
	SPECIAL, /* 0x5c */
221
	SPECIAL, /* 0x5d */
222
	SPECIAL, /* 0x5e */
223
	SPECIAL, /* 0x5f */
224
	SPECIAL, /* 0x60 */
225
	SPECIAL, /* 0x61 */
226
	SPECIAL, /* 0x62 */
227
	SPECIAL, /* 0x63 */
228
	SPECIAL, /* 0x64 */
229
	SPECIAL, /* 0x65 */
230
	SPECIAL, /* 0x66 */
231
	SPECIAL, /* 0x67 */
232
	SPECIAL, /* 0x68 */
233
	SPECIAL, /* 0x69 */
234
	SPECIAL, /* 0x6a */
235
	SPECIAL, /* 0x6b */
236
	SPECIAL, /* 0x6c */
237
	SPECIAL, /* 0x6d */
238
	SPECIAL, /* 0x6e */
239
	SPECIAL, /* 0x6f */
240
	SPECIAL, /* 0x70 */
241
	SPECIAL, /* 0x71 */
242
	SPECIAL, /* 0x72 */
243
	SPECIAL, /* 0x73 */
244
	SPECIAL, /* 0x74 */
245
	SPECIAL, /* 0x75 */
246
	SPECIAL, /* 0x76 */
247
	SPECIAL, /* 0x77 */
248
	SPECIAL, /* 0x78 */
249
	SPECIAL, /* 0x79 */
250
	SPECIAL, /* 0x7a */
251
	SPECIAL, /* 0x7b */
252
	SPECIAL, /* 0x7c */
253
	SPECIAL, /* 0x7d */
254
	SPECIAL, /* 0x7e */
255
	SPECIAL, /* 0x7f */	
256
};
257
 
1694 palkovsky 258
irq_cmd_t i8042_cmds[2] = {
259
	{ CMD_PORT_READ_1, (void *)0x64, 0, 1 },
260
	{ CMD_PORT_READ_1, (void *)0x60, 0, 2 }
1339 cejka 261
};
262
 
263
irq_code_t i8042_kbd = {
1694 palkovsky 264
	2,
1339 cejka 265
	i8042_cmds
266
};
267
 
1451 cejka 268
static int key_released(keybuffer_t *keybuffer, unsigned char key)
1339 cejka 269
{
270
	switch (key) {
271
		case SC_LSHIFT:
272
		case SC_RSHIFT:
273
			keyflags &= ~PRESSED_SHIFT;
274
			break;
275
		case SC_CAPSLOCK:
276
			keyflags &= ~PRESSED_CAPSLOCK;
277
			if (lockflags & LOCKED_CAPSLOCK)
278
				lockflags &= ~LOCKED_CAPSLOCK;
279
				else
280
				lockflags |= LOCKED_CAPSLOCK;
281
			break;
282
		default:
283
			break;
284
	}
285
}
286
 
1451 cejka 287
static int key_pressed(keybuffer_t *keybuffer, unsigned char key)
1339 cejka 288
{
1560 vana 289
	int *map = sc_primary_map;
290
	int ascii = sc_primary_map[key];
291
	int shift, capslock;
292
	int letter = 0;
1339 cejka 293
 
1644 vana 294
	static int esc_count=0;
295
 
296
 
297
	if ( key == SC_ESC ) {
298
		esc_count++;
299
		if ( esc_count == 3 ) {
300
			__SYSCALL0(SYS_DEBUG_ENABLE_CONSOLE);
301
		}	
302
	} else {
303
		esc_count=0;
304
	}
305
 
306
 
307
 
1339 cejka 308
	switch (key) {
309
		case SC_LSHIFT:
310
		case SC_RSHIFT:
311
		    	keyflags |= PRESSED_SHIFT;
312
			break;
313
		case SC_CAPSLOCK:
314
			keyflags |= PRESSED_CAPSLOCK;
315
			break;
316
		case SC_SPEC_ESCAPE:
317
			break;
1504 cejka 318
	/*	case SC_LEFTARR:
1451 cejka 319
			if (keybuffer_available(keybuffer) >= 3) {
320
				keybuffer_push(keybuffer, 0x1b);	
321
				keybuffer_push(keybuffer, 0x5b);	
322
				keybuffer_push(keybuffer, 0x44);	
1339 cejka 323
			}
324
			break;
325
		case SC_RIGHTARR:
1451 cejka 326
			if (keybuffer_available(keybuffer) >= 3) {
327
				keybuffer_push(keybuffer, 0x1b);	
328
				keybuffer_push(keybuffer, 0x5b);	
329
				keybuffer_push(keybuffer, 0x43);	
1339 cejka 330
			}
331
			break;
332
		case SC_UPARR:
1451 cejka 333
			if (keybuffer_available(keybuffer) >= 3) {
334
				keybuffer_push(keybuffer, 0x1b);	
335
				keybuffer_push(keybuffer, 0x5b);	
336
				keybuffer_push(keybuffer, 0x41);	
1339 cejka 337
			}
338
			break;
339
		case SC_DOWNARR:
1451 cejka 340
			if (keybuffer_available(keybuffer) >= 3) {
341
				keybuffer_push(keybuffer, 0x1b);	
342
				keybuffer_push(keybuffer, 0x5b);	
343
				keybuffer_push(keybuffer, 0x42);	
1339 cejka 344
			}
345
			break;
346
		case SC_HOME:
1451 cejka 347
			if (keybuffer_available(keybuffer) >= 3) {
348
				keybuffer_push(keybuffer, 0x1b);	
349
				keybuffer_push(keybuffer, 0x4f);	
350
				keybuffer_push(keybuffer, 0x48);	
1339 cejka 351
			}
352
			break;
353
		case SC_END:
1451 cejka 354
			if (keybuffer_available(keybuffer) >= 3) {
355
				keybuffer_push(keybuffer, 0x1b);	
356
				keybuffer_push(keybuffer, 0x4f);	
357
				keybuffer_push(keybuffer, 0x46);	
1339 cejka 358
			}
359
			break;
360
		case SC_DELETE:
1451 cejka 361
			if (keybuffer_available(keybuffer) >= 4) {
362
				keybuffer_push(keybuffer, 0x1b);	
363
				keybuffer_push(keybuffer, 0x5b);	
364
				keybuffer_push(keybuffer, 0x33);	
365
				keybuffer_push(keybuffer, 0x7e);	
1339 cejka 366
			}
367
			break;
1504 cejka 368
	*/	default:
1339 cejka 369
		    	letter = ((ascii >= 'a') && (ascii <= 'z'));
370
			capslock = (keyflags & PRESSED_CAPSLOCK) || (lockflags & LOCKED_CAPSLOCK);
371
			shift = keyflags & PRESSED_SHIFT;
372
			if (letter && capslock)
373
				shift = !shift;
374
			if (shift)
375
				map = sc_secondary_map;
1504 cejka 376
			if (map[key] != SPECIAL)
377
				keybuffer_push(keybuffer, map[key]);	
1339 cejka 378
			break;
379
	}
380
}
381
 
1694 palkovsky 382
 
383
static void wait_ready(void) {
384
	while (i8042_status_read() & i8042_INPUT_FULL)
385
		;
386
}
387
 
1339 cejka 388
/** Register uspace irq handler
389
 * @return 
390
 */
391
int kbd_arch_init(void)
392
{
1694 palkovsky 393
	int rc1, i;
394
	int mouseenabled = 0;
395
 
396
	iospace_enable(task_get_id(),(void *)i8042_DATA, 5);
397
	/* Disable kbd, enable mouse */
398
	i8042_command_write(i8042_CMD_KBD);
399
	wait_ready();
400
	i8042_command_write(i8042_CMD_KBD);
401
	wait_ready();
402
	i8042_data_write(i8042_KBD_DISABLE);
403
	wait_ready();
404
 
405
	/* Flush all current IO */
406
	while (i8042_status_read() & i8042_OUTPUT_FULL)
407
		i8042_data_read();
408
	/* Initialize mouse */
409
	i8042_command_write(i8042_CMD_MOUSE);
410
	wait_ready();
411
	i8042_data_write(MOUSE_OUT_INIT);
412
	wait_ready();
413
 
414
	int mouseanswer = 0;
415
	for (i=0;i < 1000; i++) {
416
		int status = i8042_status_read();
417
		if (status & i8042_OUTPUT_FULL) {
418
			int data = i8042_data_read();
419
			if (status & i8042_MOUSE_DATA) {
420
				mouseanswer = data;
421
				break;
422
			}
423
		}
424
		usleep(1000);
425
	}
426
	if (mouseanswer == MOUSE_ACK) {
427
		/* enable mouse */
428
		mouseenabled = 1;
429
 
430
		ipc_register_irq(MOUSE_IRQ, &i8042_kbd);
431
	}
432
	/* Enable kbd */
433
	ipc_register_irq(KBD_IRQ, &i8042_kbd);
434
 
435
	int newcontrol = i8042_KBD_IE | i8042_KBD_TRANSLATE;
436
	if (mouseenabled)
437
		newcontrol |= i8042_MOUSE_IE;
438
 
439
	i8042_command_write(i8042_CMD_KBD);
440
	wait_ready();
441
	i8042_data_write(newcontrol);
442
	wait_ready();
443
 
444
	return 0;
1339 cejka 445
}
446
 
1694 palkovsky 447
/** Process keyboard & mouse events */
448
int kbd_arch_process(keybuffer_t *keybuffer, ipc_call_t *call)
1339 cejka 449
{
1694 palkovsky 450
	int status = IPC_GET_ARG1(*call);
451
 
452
	if ((status & i8042_MOUSE_DATA)) {
453
		;
454
	} else {
455
		int scan_code = IPC_GET_ARG2(*call);
456
 
457
		if (scan_code != IGNORE_CODE) {
458
			if (scan_code & KEY_RELEASE)
459
				key_released(keybuffer, scan_code ^ KEY_RELEASE);
460
			else
461
				key_pressed(keybuffer, scan_code);
462
		}
1339 cejka 463
	}
464
	return 	1;
465
}
1649 cejka 466
 
467
/**
468
 * @}
469
 */ 
470