1 | /* |
---|
2 | * This file contains the PS2 keyboard driver for the i8042 |
---|
3 | * |
---|
4 | * Note that this driver will only handle a single i8042 device |
---|
5 | * |
---|
6 | * COPYRIGHT (c) 1998 by Radstone Technology |
---|
7 | * |
---|
8 | * |
---|
9 | * THIS FILE IS PROVIDED TO YOU, THE USER, "AS IS", WITHOUT WARRANTY OF ANY |
---|
10 | * KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING, BUT NOT LIMITED TO, THE |
---|
11 | * IMPLIED WARRANTY OF FITNESS FOR A PARTICULAR PURPOSE. THE ENTIRE RISK |
---|
12 | * AS TO THE QUALITY AND PERFORMANCE OF ALL CODE IN THIS FILE IS WITH YOU. |
---|
13 | * |
---|
14 | * You are hereby granted permission to use, copy, modify, and distribute |
---|
15 | * this file, provided that this notice, plus the above copyright notice |
---|
16 | * and disclaimer, appears in all copies. Radstone Technology will provide |
---|
17 | * no support for this code. |
---|
18 | * |
---|
19 | * This driver uses the termios pseudo driver. |
---|
20 | * |
---|
21 | * $Id$ |
---|
22 | */ |
---|
23 | |
---|
24 | #include <rtems.h> |
---|
25 | #include <bsp.h> |
---|
26 | #include <rtems/libio.h> |
---|
27 | #include <libchip/serial.h> |
---|
28 | #include <ringbuf.h> |
---|
29 | |
---|
30 | #include "console.h" |
---|
31 | #include "i8042_p.h" |
---|
32 | #include "vga_p.h" |
---|
33 | |
---|
34 | /* |
---|
35 | * UK style keyboard |
---|
36 | */ |
---|
37 | char pcUKNormalLookup[] = "1234567890-=\b\tqwertyuiop[]\n\0asdfghjkl;\'" |
---|
38 | "`\0#zxcvbnm,./\0*\0 \0\0\0\0\0\0\0\0\0\0\0\0" |
---|
39 | "\000789-456+1230.\0\0\\"; |
---|
40 | char pcUKShiftedLookup[]= "!\"£$%^&*()_+\b\tQWERTYUIOP{}\n\0ASDFGHJKL:" |
---|
41 | "@\0\0~ZXCVBNM<>?\0*\0 \0\0\0\0\0\0\0\0\0\0\0" |
---|
42 | "\0\000789-456+1230.\0\0|"; |
---|
43 | /* |
---|
44 | * US style keyboard |
---|
45 | */ |
---|
46 | char pcUSNormalLookup[] = "1234567890-=\b\tqwertyuiop[]\n\0asdfghjkl;\'" |
---|
47 | "`\0\\zxcvbnm,./\0*\0 \0\0\0\0\0\0\0\0\0\0\0" |
---|
48 | "\0\000789-456+1230.\0\0\\"; |
---|
49 | char pcUSShiftedLookup[]= "!@#$%^&*()_+\b\tQWERTYUIOP{}\n\0ASDFGHJKL:@~" |
---|
50 | "\0|ZXCVBNM<>?\0*\0 \0\0\0\0\0\0\0\0\0\0\0\0" |
---|
51 | "\000789-456+1230.\0\0|"; |
---|
52 | |
---|
53 | static char *pcNormalLookup; |
---|
54 | static char *pcShiftedLookup; |
---|
55 | |
---|
56 | /* |
---|
57 | * This is exported to vga.c to provide flow control |
---|
58 | */ |
---|
59 | volatile boolean bScrollLock=FALSE; |
---|
60 | |
---|
61 | /* |
---|
62 | * If multiple devices are to be supported then a private copy of |
---|
63 | * the following will be required for each instance |
---|
64 | */ |
---|
65 | static boolean bCtrlPressed=FALSE; |
---|
66 | static boolean bAltPressed=FALSE; |
---|
67 | static boolean bAltGrPressed=FALSE; |
---|
68 | static boolean bLShiftPressed=FALSE; |
---|
69 | static boolean bRShiftPressed=FALSE; |
---|
70 | static boolean bCapsLock=FALSE; |
---|
71 | static boolean bNumLock=FALSE; |
---|
72 | static boolean bTwoCode=FALSE; |
---|
73 | |
---|
74 | #if CONSOLE_USE_INTERRUPTS |
---|
75 | static volatile Ring_buffer_t KbdOutputBuffer; |
---|
76 | static volatile boolean bProcessInterruptInput=FALSE; |
---|
77 | static boolean bInterruptsEnabled=FALSE; |
---|
78 | static volatile boolean bReceivedAck=TRUE; |
---|
79 | |
---|
80 | static void i8042_process( |
---|
81 | int minor |
---|
82 | ); |
---|
83 | |
---|
84 | static void i8042_scan_code( |
---|
85 | int minor, |
---|
86 | unsigned8 ucScan |
---|
87 | ); |
---|
88 | #endif |
---|
89 | |
---|
90 | static volatile Ring_buffer_t KbdInputBuffer; |
---|
91 | |
---|
92 | /* |
---|
93 | * The following routines enable an interrupt driver to switch |
---|
94 | * to polled mode as required for command processing |
---|
95 | */ |
---|
96 | void i8042_polled_on( |
---|
97 | int minor |
---|
98 | ) |
---|
99 | { |
---|
100 | #if CONSOLE_USE_INTERRUPTS |
---|
101 | bProcessInterruptInput=FALSE; |
---|
102 | #endif |
---|
103 | } |
---|
104 | |
---|
105 | void i8042_polled_off( |
---|
106 | int minor |
---|
107 | ) |
---|
108 | { |
---|
109 | #if CONSOLE_USE_INTERRUPTS |
---|
110 | unsigned32 Irql; |
---|
111 | unsigned8 ucScan; |
---|
112 | |
---|
113 | /* |
---|
114 | * Make sure we have processed everything outstanding |
---|
115 | */ |
---|
116 | rtems_interrupt_disable(Irql); |
---|
117 | while(!Ring_buffer_Is_empty(&KbdInputBuffer)) |
---|
118 | { |
---|
119 | rtems_interrupt_enable(Irql); |
---|
120 | Ring_buffer_Remove_character(&KbdInputBuffer, |
---|
121 | ucScan); |
---|
122 | i8042_scan_code(minor, ucScan); |
---|
123 | rtems_interrupt_disable(Irql); |
---|
124 | } |
---|
125 | bProcessInterruptInput=TRUE; |
---|
126 | rtems_interrupt_enable(Irql); |
---|
127 | #endif |
---|
128 | } |
---|
129 | |
---|
130 | /* |
---|
131 | * Send data to the keyboard |
---|
132 | */ |
---|
133 | static rtems_status_code |
---|
134 | i8042_outbyte_raw( |
---|
135 | int minor, |
---|
136 | unsigned8 ucData |
---|
137 | ) |
---|
138 | { |
---|
139 | unsigned32 i; |
---|
140 | unsigned8 Status; |
---|
141 | |
---|
142 | #if CONSOLE_USE_INTERRUPTS |
---|
143 | unsigned32 Irql; |
---|
144 | |
---|
145 | if(bInterruptsEnabled) |
---|
146 | { |
---|
147 | Ring_buffer_Add_character(&KbdOutputBuffer, |
---|
148 | ucData); |
---|
149 | if(!Console_Port_Data[minor].bActive) |
---|
150 | { |
---|
151 | /* |
---|
152 | * Wake up the device |
---|
153 | */ |
---|
154 | rtems_interrupt_disable(Irql); |
---|
155 | Console_Port_Data[minor].bActive=TRUE; |
---|
156 | i8042_process(minor); |
---|
157 | rtems_interrupt_enable(Irql); |
---|
158 | |
---|
159 | } |
---|
160 | return RTEMS_SUCCESSFUL; |
---|
161 | } |
---|
162 | #endif |
---|
163 | for (i=0; i<KBD_TIMEOUT; i++) |
---|
164 | { |
---|
165 | inport_byte(Console_Port_Tbl[minor].ulCtrlPort1, Status); |
---|
166 | if((Status & KBD_IBF_MASK)==0) |
---|
167 | { |
---|
168 | outport_byte(Console_Port_Tbl[minor].ulDataPort, |
---|
169 | ucData); |
---|
170 | return RTEMS_SUCCESSFUL; |
---|
171 | } |
---|
172 | } |
---|
173 | return RTEMS_TIMEOUT; |
---|
174 | } |
---|
175 | |
---|
176 | /* |
---|
177 | * Read data from the keyboard |
---|
178 | */ |
---|
179 | static rtems_status_code |
---|
180 | i8042_inbyte_polled( |
---|
181 | int minor, |
---|
182 | unsigned8 *pucData |
---|
183 | ) |
---|
184 | { |
---|
185 | unsigned8 Status; |
---|
186 | |
---|
187 | inport_byte(Console_Port_Tbl[minor].ulCtrlPort1, Status); |
---|
188 | if(Status & KBD_OBF_MASK) |
---|
189 | { |
---|
190 | inport_byte(Console_Port_Tbl[minor].ulDataPort, |
---|
191 | *pucData); |
---|
192 | return RTEMS_SUCCESSFUL; |
---|
193 | } |
---|
194 | return RTEMS_TIMEOUT; |
---|
195 | } |
---|
196 | |
---|
197 | /* |
---|
198 | * Blocking read data from the keyboard |
---|
199 | */ |
---|
200 | static rtems_status_code |
---|
201 | i8042_inbyte_raw( |
---|
202 | int minor, |
---|
203 | unsigned8 *pucData |
---|
204 | ) |
---|
205 | { |
---|
206 | int i; |
---|
207 | |
---|
208 | #if CONSOLE_USE_INTERRUPTS |
---|
209 | if(bInterruptsEnabled) |
---|
210 | { |
---|
211 | i=0; |
---|
212 | while(Ring_buffer_Is_empty(&KbdInputBuffer)) |
---|
213 | { |
---|
214 | rtems_task_wake_after(RTEMS_YIELD_PROCESSOR); |
---|
215 | if(i++==KBD_TIMEOUT) |
---|
216 | { |
---|
217 | return RTEMS_TIMEOUT; |
---|
218 | } |
---|
219 | } |
---|
220 | Ring_buffer_Remove_character(&KbdInputBuffer, |
---|
221 | *pucData); |
---|
222 | } |
---|
223 | else |
---|
224 | #endif |
---|
225 | { |
---|
226 | for (i=0; i<KBD_TIMEOUT; i++) |
---|
227 | { |
---|
228 | if(i8042_inbyte_polled(minor, pucData)== |
---|
229 | RTEMS_SUCCESSFUL) |
---|
230 | { |
---|
231 | return RTEMS_SUCCESSFUL; |
---|
232 | } |
---|
233 | /* |
---|
234 | * Wait for a character to be recieved |
---|
235 | */ |
---|
236 | } |
---|
237 | |
---|
238 | return RTEMS_TIMEOUT; |
---|
239 | } |
---|
240 | |
---|
241 | return RTEMS_SUCCESSFUL; |
---|
242 | } |
---|
243 | |
---|
244 | /* |
---|
245 | * Send a command to the keyboard controller |
---|
246 | */ |
---|
247 | static rtems_status_code |
---|
248 | i8042_outbyte_cmd_polled( |
---|
249 | int minor, |
---|
250 | unsigned8 ucCommand |
---|
251 | ) |
---|
252 | { |
---|
253 | unsigned32 i; |
---|
254 | unsigned8 Status; |
---|
255 | |
---|
256 | /* |
---|
257 | * This routine may be called when no clock driver is available |
---|
258 | * so the timeout is dependant on the ISA bus timing used to access |
---|
259 | * the i8042 which will not vary (much) across platforms. |
---|
260 | */ |
---|
261 | for (i=0; i<KBD_TIMEOUT; i++) |
---|
262 | { |
---|
263 | inport_byte(Console_Port_Tbl[minor].ulCtrlPort1, Status); |
---|
264 | if((Status & KBD_IBF_MASK)==0) |
---|
265 | { |
---|
266 | outport_byte(Console_Port_Tbl[minor].ulCtrlPort1, |
---|
267 | ucCommand); |
---|
268 | return RTEMS_SUCCESSFUL; |
---|
269 | } |
---|
270 | } |
---|
271 | return RTEMS_TIMEOUT; |
---|
272 | } |
---|
273 | |
---|
274 | void EnqueueKbdChar( |
---|
275 | int minor, |
---|
276 | char cChar |
---|
277 | ) |
---|
278 | { |
---|
279 | #if CONSOLE_USE_INTERRUPTS |
---|
280 | rtems_termios_enqueue_raw_characters( |
---|
281 | Console_Port_Data[minor].termios_data, |
---|
282 | &cChar, |
---|
283 | 1); |
---|
284 | #else |
---|
285 | Ring_buffer_Add_character(&KbdInputBuffer, cChar); |
---|
286 | #endif |
---|
287 | } |
---|
288 | /* |
---|
289 | * Process second code in a two code sequence |
---|
290 | */ |
---|
291 | static void i8042_process_two_code( |
---|
292 | int minor, |
---|
293 | unsigned8 ucScan, |
---|
294 | boolean bMakenBreak |
---|
295 | ) |
---|
296 | { |
---|
297 | char cASCIICtrlCode; |
---|
298 | char cASCIICode; |
---|
299 | |
---|
300 | cASCIICtrlCode='\0'; |
---|
301 | cASCIICode='\0'; |
---|
302 | |
---|
303 | switch(ucScan) |
---|
304 | { |
---|
305 | case KEY_ALT: |
---|
306 | { |
---|
307 | bAltGrPressed=bMakenBreak; |
---|
308 | break; |
---|
309 | } |
---|
310 | |
---|
311 | case KEY_CONTROL: |
---|
312 | { |
---|
313 | bCtrlPressed=bMakenBreak; |
---|
314 | break; |
---|
315 | } |
---|
316 | |
---|
317 | case KEY_INSERT: |
---|
318 | { |
---|
319 | cASCIICtrlCode='@'; |
---|
320 | break; |
---|
321 | } |
---|
322 | |
---|
323 | case KEY_DELETE: |
---|
324 | { |
---|
325 | cASCIICode=ASCII_DEL; |
---|
326 | break; |
---|
327 | } |
---|
328 | |
---|
329 | case KEY_LEFT_ARROW: |
---|
330 | { |
---|
331 | cASCIICtrlCode='D'; |
---|
332 | break; |
---|
333 | } |
---|
334 | |
---|
335 | case KEY_HOME: |
---|
336 | { |
---|
337 | cASCIICtrlCode='H'; |
---|
338 | break; |
---|
339 | } |
---|
340 | |
---|
341 | case KEY_END: |
---|
342 | { |
---|
343 | cASCIICtrlCode='K'; |
---|
344 | break; |
---|
345 | } |
---|
346 | |
---|
347 | case KEY_UP_ARROW: |
---|
348 | { |
---|
349 | cASCIICtrlCode='A'; |
---|
350 | break; |
---|
351 | } |
---|
352 | |
---|
353 | case KEY_DOWN_ARROW: |
---|
354 | { |
---|
355 | cASCIICtrlCode='B'; |
---|
356 | break; |
---|
357 | } |
---|
358 | |
---|
359 | case KEY_PAGE_UP: |
---|
360 | { |
---|
361 | cASCIICtrlCode='?'; |
---|
362 | break; |
---|
363 | } |
---|
364 | |
---|
365 | case KEY_PAGE_DOWN: |
---|
366 | { |
---|
367 | cASCIICtrlCode='/'; |
---|
368 | break; |
---|
369 | } |
---|
370 | |
---|
371 | case KEY_RIGHT_ARROW: |
---|
372 | { |
---|
373 | cASCIICtrlCode='C'; |
---|
374 | break; |
---|
375 | } |
---|
376 | |
---|
377 | case KEY_KEYPAD_SLASH: |
---|
378 | { |
---|
379 | cASCIICode='/'; |
---|
380 | break; |
---|
381 | } |
---|
382 | |
---|
383 | case KEY_KEYPAD_ENTER: |
---|
384 | { |
---|
385 | cASCIICode=ASCII_CR; |
---|
386 | break; |
---|
387 | } |
---|
388 | |
---|
389 | case KEY_PRINT_SCREEN: |
---|
390 | { |
---|
391 | cASCIICode=ASCII_SYSRQ; |
---|
392 | break; |
---|
393 | } |
---|
394 | |
---|
395 | default: |
---|
396 | { |
---|
397 | /* |
---|
398 | * Ignore this code |
---|
399 | */ |
---|
400 | break; |
---|
401 | } |
---|
402 | } |
---|
403 | |
---|
404 | if(bMakenBreak && cASCIICode) |
---|
405 | { |
---|
406 | EnqueueKbdChar(minor, cASCIICode); |
---|
407 | } |
---|
408 | else if(bMakenBreak && cASCIICtrlCode) |
---|
409 | { |
---|
410 | EnqueueKbdChar(minor, ASCII_CSI); |
---|
411 | EnqueueKbdChar(minor, cASCIICtrlCode); |
---|
412 | } |
---|
413 | } |
---|
414 | |
---|
415 | static boolean i8042_process_qualifiers( |
---|
416 | unsigned8 ucScan, |
---|
417 | boolean bMakenBreak |
---|
418 | ) |
---|
419 | { |
---|
420 | boolean bProcessed; |
---|
421 | |
---|
422 | /* |
---|
423 | * Check for scan codes for shift, control, or alt keys. |
---|
424 | */ |
---|
425 | bProcessed=TRUE; |
---|
426 | |
---|
427 | switch (ucScan) |
---|
428 | { |
---|
429 | case KEY_LEFT_SHIFT: |
---|
430 | { |
---|
431 | bLShiftPressed=bMakenBreak; |
---|
432 | break; |
---|
433 | } |
---|
434 | |
---|
435 | case KEY_RIGHT_SHIFT: |
---|
436 | { |
---|
437 | bRShiftPressed=bMakenBreak; |
---|
438 | break; |
---|
439 | } |
---|
440 | |
---|
441 | case KEY_CONTROL: |
---|
442 | { |
---|
443 | bCtrlPressed=bMakenBreak; |
---|
444 | break; |
---|
445 | } |
---|
446 | |
---|
447 | case KEY_ALT: |
---|
448 | { |
---|
449 | bAltPressed=bMakenBreak; |
---|
450 | break; |
---|
451 | } |
---|
452 | |
---|
453 | default: |
---|
454 | { |
---|
455 | /* |
---|
456 | * Something else needs to process this code |
---|
457 | */ |
---|
458 | bProcessed=FALSE; |
---|
459 | break; |
---|
460 | } |
---|
461 | } |
---|
462 | |
---|
463 | return(bProcessed); |
---|
464 | } |
---|
465 | |
---|
466 | static boolean i8042_process_top_row( |
---|
467 | int minor, |
---|
468 | unsigned8 ucScan |
---|
469 | ) |
---|
470 | { |
---|
471 | boolean bProcessed; |
---|
472 | char cASCIIFnCode; |
---|
473 | #if CONSOLE_USE_INTERRUPTS==0 |
---|
474 | unsigned8 ucKeyboardAck; |
---|
475 | #endif |
---|
476 | |
---|
477 | /* |
---|
478 | * Check for keys on the top row |
---|
479 | */ |
---|
480 | bProcessed=TRUE; |
---|
481 | cASCIIFnCode='\0'; |
---|
482 | |
---|
483 | switch (ucScan) |
---|
484 | { |
---|
485 | case KEY_ESC: |
---|
486 | { |
---|
487 | EnqueueKbdChar(minor, ASCII_ESC); |
---|
488 | break; |
---|
489 | } |
---|
490 | |
---|
491 | case KEY_F1: |
---|
492 | { |
---|
493 | cASCIIFnCode='P'; |
---|
494 | break; |
---|
495 | } |
---|
496 | |
---|
497 | case KEY_F2: |
---|
498 | { |
---|
499 | cASCIIFnCode='Q'; |
---|
500 | break; |
---|
501 | } |
---|
502 | |
---|
503 | case KEY_F3: |
---|
504 | { |
---|
505 | cASCIIFnCode='w'; |
---|
506 | break; |
---|
507 | } |
---|
508 | |
---|
509 | case KEY_F4: |
---|
510 | { |
---|
511 | cASCIIFnCode='x'; |
---|
512 | break; |
---|
513 | } |
---|
514 | |
---|
515 | case KEY_F5: |
---|
516 | { |
---|
517 | cASCIIFnCode='t'; |
---|
518 | break; |
---|
519 | } |
---|
520 | |
---|
521 | case KEY_F6: |
---|
522 | { |
---|
523 | cASCIIFnCode='u'; |
---|
524 | break; |
---|
525 | } |
---|
526 | |
---|
527 | case KEY_F7: |
---|
528 | { |
---|
529 | cASCIIFnCode='q'; |
---|
530 | break; |
---|
531 | } |
---|
532 | |
---|
533 | case KEY_F8: |
---|
534 | { |
---|
535 | cASCIIFnCode='r'; |
---|
536 | break; |
---|
537 | } |
---|
538 | |
---|
539 | case KEY_F9: |
---|
540 | { |
---|
541 | cASCIIFnCode='p'; |
---|
542 | break; |
---|
543 | } |
---|
544 | |
---|
545 | case KEY_F10: |
---|
546 | { |
---|
547 | cASCIIFnCode='M'; |
---|
548 | break; |
---|
549 | } |
---|
550 | |
---|
551 | case KEY_F11: |
---|
552 | { |
---|
553 | cASCIIFnCode='A'; |
---|
554 | break; |
---|
555 | } |
---|
556 | |
---|
557 | case KEY_F12: |
---|
558 | { |
---|
559 | cASCIIFnCode='B'; |
---|
560 | break; |
---|
561 | } |
---|
562 | |
---|
563 | case KEY_SYS_REQUEST: |
---|
564 | { |
---|
565 | EnqueueKbdChar(minor, ASCII_SYSRQ); |
---|
566 | break; |
---|
567 | } |
---|
568 | |
---|
569 | case KEY_CAPS_LOCK: |
---|
570 | case KEY_NUM_LOCK: |
---|
571 | case KEY_SCROLL_LOCK: |
---|
572 | { |
---|
573 | switch(ucScan) |
---|
574 | { |
---|
575 | case KEY_CAPS_LOCK: |
---|
576 | { |
---|
577 | bCapsLock=!bCapsLock; |
---|
578 | break; |
---|
579 | } |
---|
580 | |
---|
581 | case KEY_NUM_LOCK: |
---|
582 | { |
---|
583 | bNumLock=!bNumLock; |
---|
584 | break; |
---|
585 | } |
---|
586 | |
---|
587 | case KEY_SCROLL_LOCK: |
---|
588 | { |
---|
589 | #if CONSOLE_USE_INTERRUPTS |
---|
590 | bScrollLock=!bScrollLock; |
---|
591 | #endif |
---|
592 | break; |
---|
593 | } |
---|
594 | } |
---|
595 | |
---|
596 | i8042_outbyte_raw(minor, KBD_CMD_SET_LEDS); |
---|
597 | #if CONSOLE_USE_INTERRUPTS==0 |
---|
598 | i8042_inbyte_raw(minor, &ucKeyboardAck); |
---|
599 | #endif |
---|
600 | i8042_outbyte_raw(minor, |
---|
601 | (bCapsLock ? KBD_LED_CAPS : 0) | |
---|
602 | (bNumLock ? KBD_LED_NUM : 0) | |
---|
603 | (bScrollLock ? KBD_LED_SCROLL : 0)); |
---|
604 | #if CONSOLE_USE_INTERRUPTS==0 |
---|
605 | i8042_inbyte_raw(minor, &ucKeyboardAck); |
---|
606 | #endif |
---|
607 | |
---|
608 | break; |
---|
609 | } |
---|
610 | |
---|
611 | default: |
---|
612 | { |
---|
613 | /* |
---|
614 | * Something else needs to process this code |
---|
615 | */ |
---|
616 | bProcessed=FALSE; |
---|
617 | break; |
---|
618 | } |
---|
619 | } |
---|
620 | |
---|
621 | if(cASCIIFnCode) |
---|
622 | { |
---|
623 | EnqueueKbdChar(minor, ASCII_CSI); |
---|
624 | EnqueueKbdChar(minor, 'O'); |
---|
625 | EnqueueKbdChar(minor, cASCIIFnCode); |
---|
626 | } |
---|
627 | |
---|
628 | return(bProcessed); |
---|
629 | } |
---|
630 | |
---|
631 | static boolean i8042_process_keypad( |
---|
632 | int minor, |
---|
633 | unsigned8 ucScan |
---|
634 | ) |
---|
635 | { |
---|
636 | char cASCIICtrlCode; |
---|
637 | |
---|
638 | /* |
---|
639 | * Process keys on the keypad |
---|
640 | */ |
---|
641 | cASCIICtrlCode='\0'; |
---|
642 | |
---|
643 | switch(ucScan) |
---|
644 | { |
---|
645 | case KEY_UP_ARROW: |
---|
646 | { |
---|
647 | cASCIICtrlCode='A'; |
---|
648 | break; |
---|
649 | } |
---|
650 | |
---|
651 | case KEY_DOWN_ARROW: |
---|
652 | { |
---|
653 | cASCIICtrlCode='B'; |
---|
654 | break; |
---|
655 | } |
---|
656 | |
---|
657 | case KEY_RIGHT_ARROW: |
---|
658 | { |
---|
659 | cASCIICtrlCode='C'; |
---|
660 | break; |
---|
661 | } |
---|
662 | |
---|
663 | case KEY_LEFT_ARROW: |
---|
664 | { |
---|
665 | cASCIICtrlCode='D'; |
---|
666 | break; |
---|
667 | } |
---|
668 | |
---|
669 | case KEY_HOME: |
---|
670 | { |
---|
671 | cASCIICtrlCode='H'; |
---|
672 | break; |
---|
673 | } |
---|
674 | |
---|
675 | case KEY_END: |
---|
676 | { |
---|
677 | cASCIICtrlCode='K'; |
---|
678 | break; |
---|
679 | } |
---|
680 | |
---|
681 | case KEY_PAGE_UP: |
---|
682 | { |
---|
683 | cASCIICtrlCode='?'; |
---|
684 | break; |
---|
685 | } |
---|
686 | |
---|
687 | case KEY_PAGE_DOWN: |
---|
688 | { |
---|
689 | cASCIICtrlCode='/'; |
---|
690 | break; |
---|
691 | } |
---|
692 | |
---|
693 | case KEY_INSERT: |
---|
694 | { |
---|
695 | cASCIICtrlCode='@'; |
---|
696 | break; |
---|
697 | } |
---|
698 | |
---|
699 | case KEY_DELETE: |
---|
700 | { |
---|
701 | /* |
---|
702 | * This is a special case not requiring an ASCII_CSI |
---|
703 | */ |
---|
704 | EnqueueKbdChar(minor, ASCII_DEL); |
---|
705 | return(TRUE); |
---|
706 | } |
---|
707 | |
---|
708 | default: |
---|
709 | { |
---|
710 | /* |
---|
711 | * Something else needs to process this code |
---|
712 | */ |
---|
713 | break; |
---|
714 | } |
---|
715 | } |
---|
716 | |
---|
717 | if(cASCIICtrlCode) |
---|
718 | { |
---|
719 | EnqueueKbdChar(minor, ASCII_CSI); |
---|
720 | EnqueueKbdChar(minor, cASCIICtrlCode); |
---|
721 | return(TRUE); |
---|
722 | } |
---|
723 | else |
---|
724 | { |
---|
725 | return(FALSE); |
---|
726 | } |
---|
727 | } |
---|
728 | |
---|
729 | /* |
---|
730 | * This routine translates the keyboard scan code into an |
---|
731 | * ASCII character (or sequence) and queues it |
---|
732 | */ |
---|
733 | static void i8042_scan_code( |
---|
734 | int minor, |
---|
735 | unsigned8 ucScan |
---|
736 | ) |
---|
737 | { |
---|
738 | char cChar; |
---|
739 | boolean bMakenBreak; |
---|
740 | |
---|
741 | /* |
---|
742 | * Check for code 0xe0, which introduces a two key sequence. |
---|
743 | */ |
---|
744 | |
---|
745 | if(ucScan==KEY_TWO_KEY) |
---|
746 | { |
---|
747 | bTwoCode=TRUE; |
---|
748 | return; |
---|
749 | } |
---|
750 | |
---|
751 | /* |
---|
752 | * Bit 7 of scan code indicates make or break |
---|
753 | */ |
---|
754 | if(ucScan & 0x80) |
---|
755 | { |
---|
756 | bMakenBreak=FALSE; |
---|
757 | ucScan&=0x7f; |
---|
758 | } |
---|
759 | else |
---|
760 | { |
---|
761 | bMakenBreak=TRUE; |
---|
762 | } |
---|
763 | |
---|
764 | /* |
---|
765 | * If we are in a multikey sequence then process the second keypress |
---|
766 | */ |
---|
767 | if(bTwoCode) |
---|
768 | { |
---|
769 | i8042_process_two_code(minor, ucScan, bMakenBreak); |
---|
770 | |
---|
771 | /* |
---|
772 | * Revert to prcessing single key sequences |
---|
773 | */ |
---|
774 | bTwoCode=FALSE; |
---|
775 | return; |
---|
776 | } |
---|
777 | |
---|
778 | if(i8042_process_qualifiers(ucScan, bMakenBreak)) |
---|
779 | { |
---|
780 | /* |
---|
781 | * We are all done |
---|
782 | */ |
---|
783 | return; |
---|
784 | } |
---|
785 | |
---|
786 | /* |
---|
787 | * The remaining keys are only processed for make |
---|
788 | */ |
---|
789 | if(!bMakenBreak) |
---|
790 | { |
---|
791 | return; |
---|
792 | } |
---|
793 | |
---|
794 | if(i8042_process_top_row(minor, ucScan)) |
---|
795 | { |
---|
796 | /* |
---|
797 | * We are all done |
---|
798 | */ |
---|
799 | return; |
---|
800 | } |
---|
801 | |
---|
802 | if(!bNumLock && i8042_process_keypad(minor, ucScan)) |
---|
803 | { |
---|
804 | /* |
---|
805 | * We are all done |
---|
806 | */ |
---|
807 | return; |
---|
808 | } |
---|
809 | |
---|
810 | /* |
---|
811 | * Process "normal" keys |
---|
812 | */ |
---|
813 | |
---|
814 | cChar=0; |
---|
815 | |
---|
816 | /* |
---|
817 | * Check to see if the scan code corresponds to an ASCII |
---|
818 | * character. |
---|
819 | */ |
---|
820 | if(((ucScan >= 16) && (ucScan <= 25)) || |
---|
821 | ((ucScan >= 30) && (ucScan <= 38)) || |
---|
822 | ((ucScan >= 44) && (ucScan <= 50))) |
---|
823 | { |
---|
824 | if(bCtrlPressed) |
---|
825 | { |
---|
826 | cChar=pcNormalLookup[ucScan - 2]-'a'+1; |
---|
827 | } |
---|
828 | else |
---|
829 | { |
---|
830 | if(((bLShiftPressed || bRShiftPressed) && !bCapsLock) || |
---|
831 | (!(bLShiftPressed || bRShiftPressed) && bCapsLock)) |
---|
832 | { |
---|
833 | cChar=pcShiftedLookup[ucScan - 2]; |
---|
834 | } |
---|
835 | else |
---|
836 | { |
---|
837 | cChar=pcNormalLookup[ucScan - 2]; |
---|
838 | } |
---|
839 | } |
---|
840 | } |
---|
841 | else if((ucScan > 1) && (ucScan <= 0x56)) |
---|
842 | { |
---|
843 | /* |
---|
844 | * Its ASCII but not alpha, so don't shift on CapsLock. |
---|
845 | */ |
---|
846 | if(bLShiftPressed || bRShiftPressed) |
---|
847 | { |
---|
848 | cChar=pcShiftedLookup[ucScan - 2]; |
---|
849 | } |
---|
850 | else |
---|
851 | { |
---|
852 | cChar=pcNormalLookup[ucScan - 2]; |
---|
853 | } |
---|
854 | } |
---|
855 | |
---|
856 | /* |
---|
857 | * If we got a character then queue it |
---|
858 | */ |
---|
859 | if(cChar) |
---|
860 | { |
---|
861 | EnqueueKbdChar(minor, cChar); |
---|
862 | } |
---|
863 | } |
---|
864 | |
---|
865 | /* |
---|
866 | * Console Device Driver Entry Points |
---|
867 | */ |
---|
868 | boolean i8042_probe(int minor) |
---|
869 | { |
---|
870 | unsigned8 ucKeyboardAck; |
---|
871 | unsigned8 ucKeyboardID1, ucKeyboardID2; |
---|
872 | |
---|
873 | if(!vga_probe(minor)) |
---|
874 | { |
---|
875 | /* |
---|
876 | * There is no VGA adaptor so fail probe |
---|
877 | */ |
---|
878 | return(FALSE); |
---|
879 | } |
---|
880 | |
---|
881 | Ring_buffer_Initialize(&KbdInputBuffer); |
---|
882 | #if CONSOLE_USE_INTERRUPTS |
---|
883 | Ring_buffer_Initialize(&KbdOutputBuffer); |
---|
884 | #endif |
---|
885 | |
---|
886 | i8042_polled_on(minor); |
---|
887 | /* |
---|
888 | * Determine keyboard type |
---|
889 | */ |
---|
890 | i8042_outbyte_raw(minor, KBD_CMD_READ_ID); |
---|
891 | ucKeyboardAck=0; |
---|
892 | if((i8042_inbyte_raw(minor, &ucKeyboardAck)==RTEMS_TIMEOUT) || |
---|
893 | (ucKeyboardAck==KBD_CMD_RESEND)) |
---|
894 | { |
---|
895 | /* |
---|
896 | * No or incorrect keyboard response so fail probe |
---|
897 | */ |
---|
898 | return(FALSE); |
---|
899 | } |
---|
900 | |
---|
901 | i8042_inbyte_raw(minor, &ucKeyboardID1); |
---|
902 | i8042_inbyte_raw(minor, &ucKeyboardID2); |
---|
903 | if((ucKeyboardID1==0xab) && (ucKeyboardID2==0x41)) |
---|
904 | { |
---|
905 | pcNormalLookup=&pcUKNormalLookup[0]; |
---|
906 | pcShiftedLookup=&pcUKShiftedLookup[0]; |
---|
907 | } |
---|
908 | else |
---|
909 | { |
---|
910 | pcNormalLookup=&pcUSNormalLookup[0]; |
---|
911 | pcShiftedLookup=&pcUSShiftedLookup[0]; |
---|
912 | } |
---|
913 | i8042_polled_off(minor); |
---|
914 | |
---|
915 | return(TRUE); |
---|
916 | } |
---|
917 | |
---|
918 | void i8042_init(int minor) |
---|
919 | { |
---|
920 | unsigned8 ucKeyboardAck; |
---|
921 | |
---|
922 | vga_init(minor); |
---|
923 | |
---|
924 | i8042_polled_on(minor); |
---|
925 | /* |
---|
926 | * Switch all LEDs off |
---|
927 | */ |
---|
928 | i8042_outbyte_raw(minor, KBD_CMD_SET_LEDS); |
---|
929 | i8042_inbyte_raw(minor, &ucKeyboardAck); |
---|
930 | i8042_outbyte_raw(minor, 0); |
---|
931 | i8042_inbyte_raw(minor, &ucKeyboardAck); |
---|
932 | /* |
---|
933 | * Select scan code set 1 |
---|
934 | */ |
---|
935 | i8042_outbyte_raw(minor, KBD_CMD_SEL_SCAN_CODE); |
---|
936 | i8042_inbyte_raw(minor, &ucKeyboardAck); |
---|
937 | i8042_outbyte_raw(minor, 1); |
---|
938 | i8042_inbyte_raw(minor, &ucKeyboardAck); |
---|
939 | i8042_polled_off(minor); |
---|
940 | } |
---|
941 | |
---|
942 | /* PAGE |
---|
943 | * |
---|
944 | * i8042_inbyte_nonblocking_polled |
---|
945 | * |
---|
946 | * Console Termios polling input entry point. |
---|
947 | */ |
---|
948 | |
---|
949 | int i8042_inbyte_nonblocking_polled( |
---|
950 | int minor |
---|
951 | ) |
---|
952 | { |
---|
953 | unsigned8 ucScan; |
---|
954 | char ucData; |
---|
955 | |
---|
956 | if(i8042_inbyte_polled(minor, &ucScan)==RTEMS_SUCCESSFUL) |
---|
957 | { |
---|
958 | i8042_scan_code(minor, ucScan); |
---|
959 | } |
---|
960 | |
---|
961 | if(!Ring_buffer_Is_empty(&KbdInputBuffer)) |
---|
962 | { |
---|
963 | Ring_buffer_Remove_character(&KbdInputBuffer, |
---|
964 | ucData); |
---|
965 | return(ucData); |
---|
966 | } |
---|
967 | |
---|
968 | return(-1); |
---|
969 | } |
---|
970 | |
---|
971 | #if CONSOLE_USE_INTERRUPTS |
---|
972 | /* |
---|
973 | * i8042_isr |
---|
974 | * |
---|
975 | * This routine is the console interrupt handler for the keyboard |
---|
976 | * |
---|
977 | * Input parameters: |
---|
978 | * vector - vector number |
---|
979 | * |
---|
980 | * Output parameters: NONE |
---|
981 | * |
---|
982 | * Return values: NONE |
---|
983 | */ |
---|
984 | static void i8042_process( |
---|
985 | int minor |
---|
986 | ) |
---|
987 | { |
---|
988 | unsigned8 Status; |
---|
989 | unsigned8 ucData; |
---|
990 | |
---|
991 | inport_byte(Console_Port_Tbl[minor].ulCtrlPort1, Status); |
---|
992 | |
---|
993 | if(Status & KBD_OBF_MASK) |
---|
994 | { |
---|
995 | inport_byte(Console_Port_Tbl[minor].ulDataPort, ucData); |
---|
996 | |
---|
997 | if(bProcessInterruptInput) |
---|
998 | { |
---|
999 | /* |
---|
1000 | * Every byte written to the keyboard should be followed |
---|
1001 | * by an acknowledge |
---|
1002 | */ |
---|
1003 | if(ucData==KBD_CMD_ACK) |
---|
1004 | { |
---|
1005 | bReceivedAck=TRUE; |
---|
1006 | } |
---|
1007 | else |
---|
1008 | { |
---|
1009 | i8042_scan_code(minor, ucData); |
---|
1010 | } |
---|
1011 | } |
---|
1012 | else |
---|
1013 | { |
---|
1014 | /* |
---|
1015 | * Store the scan code into the ring buffer where it |
---|
1016 | * can be read using i8042_inbyte_raw() |
---|
1017 | */ |
---|
1018 | Ring_buffer_Add_character(&KbdInputBuffer, ucData); |
---|
1019 | } |
---|
1020 | } |
---|
1021 | |
---|
1022 | if(((Status & KBD_IBF_MASK)==0) && |
---|
1023 | bReceivedAck) |
---|
1024 | { |
---|
1025 | if(Ring_buffer_Is_empty(&KbdOutputBuffer)) |
---|
1026 | { |
---|
1027 | Console_Port_Data[minor].bActive=FALSE; |
---|
1028 | } |
---|
1029 | else |
---|
1030 | { |
---|
1031 | Ring_buffer_Remove_character(&KbdOutputBuffer, |
---|
1032 | ucData); |
---|
1033 | outport_byte(Console_Port_Tbl[minor].ulDataPort, |
---|
1034 | ucData); |
---|
1035 | bReceivedAck=FALSE; |
---|
1036 | } |
---|
1037 | } |
---|
1038 | } |
---|
1039 | |
---|
1040 | static rtems_isr i8042_isr( |
---|
1041 | rtems_vector_number vector |
---|
1042 | ) |
---|
1043 | { |
---|
1044 | int minor; |
---|
1045 | |
---|
1046 | for(minor=0;minor<Console_Port_Count;minor++) |
---|
1047 | { |
---|
1048 | if(vector==Console_Port_Tbl[minor].ulIntVector) |
---|
1049 | { |
---|
1050 | i8042_process(minor); |
---|
1051 | } |
---|
1052 | } |
---|
1053 | } |
---|
1054 | |
---|
1055 | void i8042_initialize_interrupts(int minor) |
---|
1056 | { |
---|
1057 | i8042_init(minor); |
---|
1058 | |
---|
1059 | Console_Port_Data[minor].bActive=FALSE; |
---|
1060 | |
---|
1061 | set_vector(i8042_isr, |
---|
1062 | Console_Port_Tbl[minor].ulIntVector, |
---|
1063 | 1); |
---|
1064 | |
---|
1065 | i8042_outbyte_cmd_polled(minor, KBD_CTR_WRITE_COMMAND); |
---|
1066 | i8042_outbyte_raw(minor, KBD_CMD_ENABLE_KBD_INT); |
---|
1067 | |
---|
1068 | /* |
---|
1069 | * At this point interrupts should spring into life |
---|
1070 | */ |
---|
1071 | bInterruptsEnabled=TRUE; |
---|
1072 | } |
---|
1073 | |
---|
1074 | #endif /* CONSOLE_USE_INTERRUPTS */ |
---|