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1339 cejka 1
/*
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 * Copyright (C) 2001-2004 Jakub Jermar
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 * Copyright (C) 2006 Josef Cejka
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 * All rights reserved.
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 *
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 * Redistribution and use in source and binary forms, with or without
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 * modification, are permitted provided that the following conditions
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 * are met:
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 *
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 * - Redistributions of source code must retain the above copyright
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 *   notice, this list of conditions and the following disclaimer.
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 * - Redistributions in binary form must reproduce the above copyright
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 *   notice, this list of conditions and the following disclaimer in the
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 *   documentation and/or other materials provided with the distribution.
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 * - The name of the author may not be used to endorse or promote products
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 *   derived from this software without specific prior written permission.
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 *
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 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
19
 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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 */
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#include <arch/kbd.h>
1353 jermar 31
#include <ipc/ipc.h>
1339 cejka 32
 
33
#define SPECIAL     '?'
34
#define KEY_RELEASE 0x80
35
 
36
/**
37
 * These codes read from i8042 data register are silently ignored.
38
 */
39
#define IGNORE_CODE 0x7f
40
 
41
#define PRESSED_SHIFT       (1<<0)
42
#define PRESSED_CAPSLOCK    (1<<1)
43
#define LOCKED_CAPSLOCK     (1<<0)
44
 
45
/** Scancodes. */
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#define SC_ESC      0x01
47
#define SC_BACKSPACE    0x0e
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#define SC_LSHIFT   0x2a
49
#define SC_RSHIFT   0x36
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#define SC_CAPSLOCK 0x3a
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#define SC_SPEC_ESCAPE  0xe0
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#define SC_LEFTARR      0x4b
53
#define SC_RIGHTARR     0x4d
54
#define SC_UPARR        0x48
55
#define SC_DOWNARR      0x50
56
#define SC_DELETE       0x53
57
#define SC_HOME         0x47
58
#define SC_END          0x4f
59
 
60
static volatile int keyflags;       /**< Tracking of multiple keypresses. */
61
static volatile int lockflags;      /**< Tracking of multiple keys lockings. */
62
 
63
/** Primary meaning of scancodes. */
64
static char sc_primary_map[] = {
65
    SPECIAL, /* 0x00 */
66
    SPECIAL, /* 0x01 - Esc */
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    '1', '2', '3', '4', '5', '6', '7', '8', '9', '0', '-', '=',
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    '\b', /* 0x0e - Backspace */
69
    '\t', 'q', 'w', 'e', 'r', 't', 'y', 'u', 'i', 'o', 'p', '[', ']', '\n',
70
    SPECIAL, /* 0x1d - LCtrl */
71
    'a', 's', 'd', 'f', 'g', 'h', 'j', 'k', 'l', ';', '\'',
72
    '`',
73
    SPECIAL, /* 0x2a - LShift */
74
    '\\',
75
    'z', 'x', 'c', 'v', 'b', 'n', 'm', ',', '.', '/',
76
    SPECIAL, /* 0x36 - RShift */
77
    '*',
78
    SPECIAL, /* 0x38 - LAlt */
79
    ' ',
80
    SPECIAL, /* 0x3a - CapsLock */
1451 cejka 81
    0x3b, /* 0x3b - F1 */
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//  SPECIAL, /* 0x3b - F1 */
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    0x3c, /* 0x3c - F2 */
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//  SPECIAL, /* 0x3c - F2 */
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    0x3d, /* 0x3d - F3 */
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//  SPECIAL, /* 0x3d - F3 */
87
    0x3e, /* 0x3e - F4 */
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//  SPECIAL, /* 0x3e - F4 */
89
//  SPECIAL, /* 0x3f - F5 */
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    0x3f, /* 0x3f - F5 */
91
//  SPECIAL, /* 0x40 - F6 */
92
    0x40, /* 0x40 - F6 */
93
//  SPECIAL, /* 0x41 - F7 */
94
    0x41, /* 0x41 - F7 */
95
//  SPECIAL, /* 0x42 - F8 */
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    0x42, /* 0x42 - F8 */
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//  SPECIAL, /* 0x43 - F9 */
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    0x43, /* 0x43 - F9 */
99
//  SPECIAL, /* 0x44 - F10 */
100
    0x44, /* 0x44 - F10 */
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    SPECIAL, /* 0x45 - NumLock */
102
    SPECIAL, /* 0x46 - ScrollLock */
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    '7', '8', '9', '-',
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    '4', '5', '6', '+',
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    '1', '2', '3',
106
    '0', '.',
107
    SPECIAL, /* 0x54 - Alt-SysRq */
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    SPECIAL, /* 0x55 - F11/F12/PF1/FN */
109
    SPECIAL, /* 0x56 - unlabelled key next to LAlt */
110
    SPECIAL, /* 0x57 - F11 */
111
    SPECIAL, /* 0x58 - F12 */
112
    SPECIAL, /* 0x59 */
113
    SPECIAL, /* 0x5a */
114
    SPECIAL, /* 0x5b */
115
    SPECIAL, /* 0x5c */
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    SPECIAL, /* 0x5d */
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    SPECIAL, /* 0x5e */
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    SPECIAL, /* 0x5f */
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    SPECIAL, /* 0x60 */
120
    SPECIAL, /* 0x61 */
121
    SPECIAL, /* 0x62 */
122
    SPECIAL, /* 0x63 */
123
    SPECIAL, /* 0x64 */
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    SPECIAL, /* 0x65 */
125
    SPECIAL, /* 0x66 */
126
    SPECIAL, /* 0x67 */
127
    SPECIAL, /* 0x68 */
128
    SPECIAL, /* 0x69 */
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    SPECIAL, /* 0x6a */
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    SPECIAL, /* 0x6b */
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    SPECIAL, /* 0x6c */
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    SPECIAL, /* 0x6d */
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    SPECIAL, /* 0x6e */
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    SPECIAL, /* 0x6f */
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    SPECIAL, /* 0x70 */
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    SPECIAL, /* 0x71 */
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    SPECIAL, /* 0x72 */
138
    SPECIAL, /* 0x73 */
139
    SPECIAL, /* 0x74 */
140
    SPECIAL, /* 0x75 */
141
    SPECIAL, /* 0x76 */
142
    SPECIAL, /* 0x77 */
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    SPECIAL, /* 0x78 */
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    SPECIAL, /* 0x79 */
145
    SPECIAL, /* 0x7a */
146
    SPECIAL, /* 0x7b */
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    SPECIAL, /* 0x7c */
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    SPECIAL, /* 0x7d */
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    SPECIAL, /* 0x7e */
150
    SPECIAL, /* 0x7f */
151
};
152
 
153
/** Secondary meaning of scancodes. */
154
static char sc_secondary_map[] = {
155
    SPECIAL, /* 0x00 */
156
    SPECIAL, /* 0x01 - Esc */
157
    '!', '@', '#', '$', '%', '^', '&', '*', '(', ')', '_', '+',
158
    SPECIAL, /* 0x0e - Backspace */
159
    '\t', 'Q', 'W', 'E', 'R', 'T', 'Y', 'U', 'I', 'O', 'P', '{', '}', '\n',
160
    SPECIAL, /* 0x1d - LCtrl */
161
    'A', 'S', 'D', 'F', 'G', 'H', 'J', 'K', 'L', ':', '"',
162
    '~',
163
    SPECIAL, /* 0x2a - LShift */
164
    '|',
165
    'Z', 'X', 'C', 'V', 'B', 'N', 'M', '<', '>', '?',
166
    SPECIAL, /* 0x36 - RShift */
167
    '*',
168
    SPECIAL, /* 0x38 - LAlt */
169
    ' ',
170
    SPECIAL, /* 0x3a - CapsLock */
1451 cejka 171
    0x3b, /* 0x3b - F1 */
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    0x3c, /* 0x3c - F2 */
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    0x3d, /* 0x3d - F3 */
174
    0x3e, /* 0x3e - F4 */
175
    0x3f, /* 0x3f - F5 */
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    0x40, /* 0x40 - F6 */
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    0x41, /* 0x41 - F7 */
178
    0x42, /* 0x42 - F8 */
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    0x43, /* 0x43 - F9 */
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    0x44, /* 0x44 - F10 */
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//  SPECIAL, /* 0x3b - F1 */
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//  SPECIAL, /* 0x3c - F2 */
183
//  SPECIAL, /* 0x3d - F3 */
184
//  SPECIAL, /* 0x3e - F4 */
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//  SPECIAL, /* 0x3f - F5 */
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//  SPECIAL, /* 0x40 - F6 */
187
//  SPECIAL, /* 0x41 - F7 */
188
//  SPECIAL, /* 0x42 - F8 */
189
//  SPECIAL, /* 0x43 - F9 */
190
//  SPECIAL, /* 0x44 - F10 */
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    SPECIAL, /* 0x45 - NumLock */
192
    SPECIAL, /* 0x46 - ScrollLock */
193
    '7', '8', '9', '-',
194
    '4', '5', '6', '+',
195
    '1', '2', '3',
196
    '0', '.',
197
    SPECIAL, /* 0x54 - Alt-SysRq */
198
    SPECIAL, /* 0x55 - F11/F12/PF1/FN */
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    SPECIAL, /* 0x56 - unlabelled key next to LAlt */
200
    SPECIAL, /* 0x57 - F11 */
201
    SPECIAL, /* 0x58 - F12 */
202
    SPECIAL, /* 0x59 */
203
    SPECIAL, /* 0x5a */
204
    SPECIAL, /* 0x5b */
205
    SPECIAL, /* 0x5c */
206
    SPECIAL, /* 0x5d */
207
    SPECIAL, /* 0x5e */
208
    SPECIAL, /* 0x5f */
209
    SPECIAL, /* 0x60 */
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    SPECIAL, /* 0x61 */
211
    SPECIAL, /* 0x62 */
212
    SPECIAL, /* 0x63 */
213
    SPECIAL, /* 0x64 */
214
    SPECIAL, /* 0x65 */
215
    SPECIAL, /* 0x66 */
216
    SPECIAL, /* 0x67 */
217
    SPECIAL, /* 0x68 */
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    SPECIAL, /* 0x69 */
219
    SPECIAL, /* 0x6a */
220
    SPECIAL, /* 0x6b */
221
    SPECIAL, /* 0x6c */
222
    SPECIAL, /* 0x6d */
223
    SPECIAL, /* 0x6e */
224
    SPECIAL, /* 0x6f */
225
    SPECIAL, /* 0x70 */
226
    SPECIAL, /* 0x71 */
227
    SPECIAL, /* 0x72 */
228
    SPECIAL, /* 0x73 */
229
    SPECIAL, /* 0x74 */
230
    SPECIAL, /* 0x75 */
231
    SPECIAL, /* 0x76 */
232
    SPECIAL, /* 0x77 */
233
    SPECIAL, /* 0x78 */
234
    SPECIAL, /* 0x79 */
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    SPECIAL, /* 0x7a */
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    SPECIAL, /* 0x7b */
237
    SPECIAL, /* 0x7c */
238
    SPECIAL, /* 0x7d */
239
    SPECIAL, /* 0x7e */
240
    SPECIAL, /* 0x7f */
241
};
242
 
243
irq_cmd_t i8042_cmds[1] = {
244
    { CMD_PORT_READ_1, (void *)0x60, 0 }
245
};
246
 
247
irq_code_t i8042_kbd = {
248
    1,
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    i8042_cmds
250
};
251
 
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static int key_released(keybuffer_t *keybuffer, unsigned char key)
1339 cejka 253
{
254
    switch (key) {
255
        case SC_LSHIFT:
256
        case SC_RSHIFT:
257
            keyflags &= ~PRESSED_SHIFT;
258
            break;
259
        case SC_CAPSLOCK:
260
            keyflags &= ~PRESSED_CAPSLOCK;
261
            if (lockflags & LOCKED_CAPSLOCK)
262
                lockflags &= ~LOCKED_CAPSLOCK;
263
                else
264
                lockflags |= LOCKED_CAPSLOCK;
265
            break;
266
        default:
267
            break;
268
    }
269
}
270
 
1451 cejka 271
static int key_pressed(keybuffer_t *keybuffer, unsigned char key)
1339 cejka 272
{
273
    char *map = sc_primary_map;
274
    char ascii = sc_primary_map[key];
275
    char shift, capslock;
276
    char letter = 0;
277
 
278
    switch (key) {
279
        case SC_LSHIFT:
280
        case SC_RSHIFT:
281
                keyflags |= PRESSED_SHIFT;
282
            break;
283
        case SC_CAPSLOCK:
284
            keyflags |= PRESSED_CAPSLOCK;
285
            break;
286
        case SC_SPEC_ESCAPE:
287
            break;
288
        case SC_LEFTARR:
1451 cejka 289
            if (keybuffer_available(keybuffer) >= 3) {
290
                keybuffer_push(keybuffer, 0x1b);   
291
                keybuffer_push(keybuffer, 0x5b);   
292
                keybuffer_push(keybuffer, 0x44);   
1339 cejka 293
            }
294
            break;
295
        case SC_RIGHTARR:
1451 cejka 296
            if (keybuffer_available(keybuffer) >= 3) {
297
                keybuffer_push(keybuffer, 0x1b);   
298
                keybuffer_push(keybuffer, 0x5b);   
299
                keybuffer_push(keybuffer, 0x43);   
1339 cejka 300
            }
301
            break;
302
        case SC_UPARR:
1451 cejka 303
            if (keybuffer_available(keybuffer) >= 3) {
304
                keybuffer_push(keybuffer, 0x1b);   
305
                keybuffer_push(keybuffer, 0x5b);   
306
                keybuffer_push(keybuffer, 0x41);   
1339 cejka 307
            }
308
            break;
309
        case SC_DOWNARR:
1451 cejka 310
            if (keybuffer_available(keybuffer) >= 3) {
311
                keybuffer_push(keybuffer, 0x1b);   
312
                keybuffer_push(keybuffer, 0x5b);   
313
                keybuffer_push(keybuffer, 0x42);   
1339 cejka 314
            }
315
            break;
316
        case SC_HOME:
1451 cejka 317
            if (keybuffer_available(keybuffer) >= 3) {
318
                keybuffer_push(keybuffer, 0x1b);   
319
                keybuffer_push(keybuffer, 0x4f);   
320
                keybuffer_push(keybuffer, 0x48);   
1339 cejka 321
            }
322
            break;
323
        case SC_END:
1451 cejka 324
            if (keybuffer_available(keybuffer) >= 3) {
325
                keybuffer_push(keybuffer, 0x1b);   
326
                keybuffer_push(keybuffer, 0x4f);   
327
                keybuffer_push(keybuffer, 0x46);   
1339 cejka 328
            }
329
            break;
330
        case SC_DELETE:
1451 cejka 331
            if (keybuffer_available(keybuffer) >= 4) {
332
                keybuffer_push(keybuffer, 0x1b);   
333
                keybuffer_push(keybuffer, 0x5b);   
334
                keybuffer_push(keybuffer, 0x33);   
335
                keybuffer_push(keybuffer, 0x7e);   
1339 cejka 336
            }
337
            break;
338
        default:
339
                letter = ((ascii >= 'a') && (ascii <= 'z'));
340
            capslock = (keyflags & PRESSED_CAPSLOCK) || (lockflags & LOCKED_CAPSLOCK);
341
            shift = keyflags & PRESSED_SHIFT;
342
            if (letter && capslock)
343
                shift = !shift;
344
            if (shift)
345
                map = sc_secondary_map;
1451 cejka 346
            keybuffer_push(keybuffer, map[key]);   
1339 cejka 347
            break;
348
    }
349
}
350
 
351
/** Register uspace irq handler
352
 * @return
353
 */
354
int kbd_arch_init(void)
355
{
356
    return !(ipc_register_irq(1, &i8042_kbd));
357
}
358
 
1451 cejka 359
int kbd_arch_process(keybuffer_t *keybuffer, int scan_code)
1339 cejka 360
{
361
    if (scan_code != IGNORE_CODE) {
362
        if (scan_code & KEY_RELEASE)
1451 cejka 363
            key_released(keybuffer, scan_code ^ KEY_RELEASE);
1339 cejka 364
        else
1451 cejka 365
            key_pressed(keybuffer, scan_code);
1339 cejka 366
    }
367
    return  1;
368
}