]>
Commit | Line | Data |
---|---|---|
c7de829c WD |
1 | /* |
2 | * (C) Copyright 2002 | |
3 | * John W. Linville, linville@tuxdriver.com | |
8bde7f77 | 4 | * |
c7de829c WD |
5 | * Modified from code for support of MIP405 and PIP405 boards. Previous |
6 | * copyright follows. | |
7 | * | |
8 | * (C) Copyright 2001 | |
9 | * Denis Peter, MPL AG Switzerland, d.peter@mpl.ch | |
10 | * | |
11 | * See file CREDITS for list of people who contributed to this | |
12 | * project. | |
13 | * | |
14 | * This program is free software; you can redistribute it and/or | |
15 | * modify it under the terms of the GNU General Public License as | |
16 | * published by the Free Software Foundation; either version 2 of | |
17 | * the License, or (at your option) any later version. | |
18 | * | |
19 | * This program is distributed in the hope that it will be useful, | |
20 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
21 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
22 | * GNU General Public License for more details. | |
23 | * | |
24 | * You should have received a copy of the GNU General Public License | |
25 | * along with this program; if not, write to the Free Software | |
26 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, | |
27 | * MA 02111-1307 USA | |
28 | * | |
29 | * | |
30 | * Source partly derived from: | |
31 | * linux/drivers/char/pc_keyb.c | |
32 | * | |
33 | * | |
34 | */ | |
35 | #include <common.h> | |
36 | #include <asm/processor.h> | |
37 | #include <devices.h> | |
38 | #include "ps2kbd.h" | |
39 | ||
40 | ||
41 | unsigned char kbd_read_status(void); | |
42 | unsigned char kbd_read_input(void); | |
43 | void kbd_send_data(unsigned char data); | |
44 | void i8259_mask_irq(unsigned int irq); | |
45 | void i8259_unmask_irq(unsigned int irq); | |
46 | ||
47 | /* used only by send_data - set by keyboard_interrupt */ | |
48 | ||
49 | ||
50 | #undef KBG_DEBUG | |
c7de829c WD |
51 | |
52 | #ifdef KBG_DEBUG | |
53 | #define PRINTF(fmt,args...) printf (fmt ,##args) | |
54 | #else | |
55 | #define PRINTF(fmt,args...) | |
56 | #endif | |
57 | ||
58 | #define KBD_STAT_KOBF 0x01 | |
59 | #define KBD_STAT_IBF 0x02 | |
60 | #define KBD_STAT_SYS 0x04 | |
53677ef1 | 61 | #define KBD_STAT_CD 0x08 |
c7de829c WD |
62 | #define KBD_STAT_LOCK 0x10 |
63 | #define KBD_STAT_MOBF 0x20 | |
64 | #define KBD_STAT_TI_OUT 0x40 | |
65 | #define KBD_STAT_PARERR 0x80 | |
66 | ||
67 | #define KBD_INIT_TIMEOUT 2000 /* Timeout in ms for initializing the keyboard */ | |
68 | #define KBC_TIMEOUT 250 /* Timeout in ms for sending to keyboard controller */ | |
69 | #define KBD_TIMEOUT 2000 /* Timeout in ms for keyboard command acknowledge */ | |
70 | /* | |
71 | * Keyboard Controller Commands | |
72 | */ | |
73 | ||
53677ef1 WD |
74 | #define KBD_CCMD_READ_MODE 0x20 /* Read mode bits */ |
75 | #define KBD_CCMD_WRITE_MODE 0x60 /* Write mode bits */ | |
76 | #define KBD_CCMD_GET_VERSION 0xA1 /* Get controller version */ | |
c7de829c | 77 | #define KBD_CCMD_MOUSE_DISABLE 0xA7 /* Disable mouse interface */ |
53677ef1 WD |
78 | #define KBD_CCMD_MOUSE_ENABLE 0xA8 /* Enable mouse interface */ |
79 | #define KBD_CCMD_TEST_MOUSE 0xA9 /* Mouse interface test */ | |
80 | #define KBD_CCMD_SELF_TEST 0xAA /* Controller self test */ | |
81 | #define KBD_CCMD_KBD_TEST 0xAB /* Keyboard interface test */ | |
82 | #define KBD_CCMD_KBD_DISABLE 0xAD /* Keyboard interface disable */ | |
83 | #define KBD_CCMD_KBD_ENABLE 0xAE /* Keyboard interface enable */ | |
c7de829c WD |
84 | #define KBD_CCMD_WRITE_AUX_OBUF 0xD3 /* Write to output buffer as if |
85 | initiated by the auxiliary device */ | |
53677ef1 | 86 | #define KBD_CCMD_WRITE_MOUSE 0xD4 /* Write the following byte to the mouse */ |
c7de829c WD |
87 | |
88 | /* | |
89 | * Keyboard Commands | |
90 | */ | |
91 | ||
53677ef1 WD |
92 | #define KBD_CMD_SET_LEDS 0xED /* Set keyboard leds */ |
93 | #define KBD_CMD_SET_RATE 0xF3 /* Set typematic rate */ | |
94 | #define KBD_CMD_ENABLE 0xF4 /* Enable scanning */ | |
95 | #define KBD_CMD_DISABLE 0xF5 /* Disable scanning */ | |
96 | #define KBD_CMD_RESET 0xFF /* Reset */ | |
c7de829c WD |
97 | |
98 | /* | |
99 | * Keyboard Replies | |
100 | */ | |
101 | ||
53677ef1 WD |
102 | #define KBD_REPLY_POR 0xAA /* Power on reset */ |
103 | #define KBD_REPLY_ACK 0xFA /* Command ACK */ | |
104 | #define KBD_REPLY_RESEND 0xFE /* Command NACK, send the cmd again */ | |
c7de829c WD |
105 | |
106 | /* | |
107 | * Status Register Bits | |
108 | */ | |
109 | ||
53677ef1 WD |
110 | #define KBD_STAT_OBF 0x01 /* Keyboard output buffer full */ |
111 | #define KBD_STAT_IBF 0x02 /* Keyboard input buffer full */ | |
112 | #define KBD_STAT_SELFTEST 0x04 /* Self test successful */ | |
113 | #define KBD_STAT_CMD 0x08 /* Last write was a command write (0=data) */ | |
114 | #define KBD_STAT_UNLOCKED 0x10 /* Zero if keyboard locked */ | |
115 | #define KBD_STAT_MOUSE_OBF 0x20 /* Mouse output buffer full */ | |
116 | #define KBD_STAT_GTO 0x40 /* General receive/xmit timeout */ | |
117 | #define KBD_STAT_PERR 0x80 /* Parity error */ | |
c7de829c WD |
118 | |
119 | #define AUX_STAT_OBF (KBD_STAT_OBF | KBD_STAT_MOUSE_OBF) | |
120 | ||
121 | /* | |
122 | * Controller Mode Register Bits | |
123 | */ | |
124 | ||
53677ef1 WD |
125 | #define KBD_MODE_KBD_INT 0x01 /* Keyboard data generate IRQ1 */ |
126 | #define KBD_MODE_MOUSE_INT 0x02 /* Mouse data generate IRQ12 */ | |
127 | #define KBD_MODE_SYS 0x04 /* The system flag (?) */ | |
128 | #define KBD_MODE_NO_KEYLOCK 0x08 /* The keylock doesn't affect the keyboard if set */ | |
129 | #define KBD_MODE_DISABLE_KBD 0x10 /* Disable keyboard interface */ | |
c7de829c | 130 | #define KBD_MODE_DISABLE_MOUSE 0x20 /* Disable mouse interface */ |
53677ef1 WD |
131 | #define KBD_MODE_KCC 0x40 /* Scan code conversion to PC format */ |
132 | #define KBD_MODE_RFU 0x80 | |
c7de829c WD |
133 | |
134 | ||
53677ef1 | 135 | #define KDB_DATA_PORT 0x60 |
c7de829c WD |
136 | #define KDB_COMMAND_PORT 0x64 |
137 | ||
53677ef1 WD |
138 | #define LED_SCR 0x01 /* scroll lock led */ |
139 | #define LED_CAP 0x04 /* caps lock led */ | |
140 | #define LED_NUM 0x02 /* num lock led */ | |
c7de829c | 141 | |
53677ef1 | 142 | #define KBD_BUFFER_LEN 0x20 /* size of the keyboardbuffer */ |
c7de829c WD |
143 | |
144 | ||
c7de829c WD |
145 | static volatile char kbd_buffer[KBD_BUFFER_LEN]; |
146 | static volatile int in_pointer = 0; | |
147 | static volatile int out_pointer = 0; | |
148 | ||
149 | ||
150 | static unsigned char num_lock = 0; | |
151 | static unsigned char caps_lock = 0; | |
152 | static unsigned char scroll_lock = 0; | |
153 | static unsigned char shift = 0; | |
154 | static unsigned char ctrl = 0; | |
155 | static unsigned char alt = 0; | |
156 | static unsigned char e0 = 0; | |
157 | static unsigned char leds = 0; | |
158 | ||
159 | #define DEVNAME "ps2kbd" | |
160 | ||
161 | /* Simple translation table for the keys */ | |
162 | ||
163 | static unsigned char kbd_plain_xlate[] = { | |
164 | 0xff,0x1b, '1', '2', '3', '4', '5', '6', '7', '8', '9', '0', '-', '=','\b','\t', /* 0x00 - 0x0f */ | |
165 | 'q', 'w', 'e', 'r', 't', 'y', 'u', 'i', 'o', 'p', '[', ']','\r',0xff, 'a', 's', /* 0x10 - 0x1f */ | |
166 | 'd', 'f', 'g', 'h', 'j', 'k', 'l', ';','\'', '`',0xff,'\\', 'z', 'x', 'c', 'v', /* 0x20 - 0x2f */ | |
167 | 'b', 'n', 'm', ',', '.', '/',0xff,0xff,0xff, ' ',0xff,0xff,0xff,0xff,0xff,0xff, /* 0x30 - 0x3f */ | |
168 | 0xff,0xff,0xff,0xff,0xff,0xff,0xff, '7', '8', '9', '-', '4', '5', '6', '+', '1', /* 0x40 - 0x4f */ | |
169 | '2', '3', '0', '.',0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff, /* 0x50 - 0x5F */ | |
170 | '\r',0xff,0xff | |
171 | }; | |
8bde7f77 | 172 | |
c7de829c WD |
173 | static unsigned char kbd_shift_xlate[] = { |
174 | 0xff,0x1b, '!', '@', '#', '$', '%', '^', '&', '*', '(', ')', '_', '+','\b','\t', /* 0x00 - 0x0f */ | |
175 | 'Q', 'W', 'E', 'R', 'T', 'Y', 'U', 'I', 'O', 'P', '{', '}','\r',0xff, 'A', 'S', /* 0x10 - 0x1f */ | |
176 | 'D', 'F', 'G', 'H', 'J', 'K', 'L', ':', '"', '~',0xff, '|', 'Z', 'X', 'C', 'V', /* 0x20 - 0x2f */ | |
177 | 'B', 'N', 'M', '<', '>', '?',0xff,0xff,0xff, ' ',0xff,0xff,0xff,0xff,0xff,0xff, /* 0x30 - 0x3f */ | |
178 | 0xff,0xff,0xff,0xff,0xff,0xff,0xff, '7', '8', '9', '-', '4', '5', '6', '+', '1', /* 0x40 - 0x4f */ | |
179 | '2', '3', '0', '.',0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff, /* 0x50 - 0x5F */ | |
180 | '\r',0xff,0xff | |
181 | }; | |
182 | ||
183 | static unsigned char kbd_ctrl_xlate[] = { | |
184 | 0xff,0x1b, '1',0x00, '3', '4', '5',0x1E, '7', '8', '9', '0',0x1F, '=','\b','\t', /* 0x00 - 0x0f */ | |
185 | 0x11,0x17,0x05,0x12,0x14,0x18,0x15,0x09,0x0f,0x10,0x1b,0x1d,'\n',0xff,0x01,0x13, /* 0x10 - 0x1f */ | |
186 | 0x04,0x06,0x08,0x09,0x0a,0x0b,0x0c, ';','\'', '~',0x00,0x1c,0x1a,0x18,0x03,0x16, /* 0x20 - 0x2f */ | |
187 | 0x02,0x0e,0x0d, '<', '>', '?',0xff,0xff,0xff,0x00,0xff,0xff,0xff,0xff,0xff,0xff, /* 0x30 - 0x3f */ | |
188 | 0xff,0xff,0xff,0xff,0xff,0xff,0xff, '7', '8', '9', '-', '4', '5', '6', '+', '1', /* 0x40 - 0x4f */ | |
189 | '2', '3', '0', '.',0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff, /* 0x50 - 0x5F */ | |
190 | '\r',0xff,0xff | |
191 | }; | |
192 | ||
193 | /****************************************************************** | |
8bde7f77 | 194 | * Init |
c7de829c WD |
195 | ******************************************************************/ |
196 | ||
53677ef1 | 197 | int isa_kbd_init (void) |
c7de829c | 198 | { |
53677ef1 WD |
199 | char *result; |
200 | ||
201 | result = kbd_initialize (); | |
202 | if (result != NULL) { | |
203 | result = kbd_initialize (); | |
c7de829c | 204 | } |
53677ef1 WD |
205 | if (result == NULL) { |
206 | printf ("AT Keyboard initialized\n"); | |
207 | irq_install_handler (KBD_INTERRUPT, | |
208 | (interrupt_handler_t *) kbd_interrupt, | |
209 | NULL); | |
c7de829c | 210 | return (1); |
53677ef1 WD |
211 | } else { |
212 | printf ("%s\n", result); | |
c7de829c WD |
213 | return (-1); |
214 | } | |
215 | } | |
216 | ||
6d0f6bcf | 217 | #ifdef CONFIG_SYS_CONSOLE_OVERWRITE_ROUTINE |
c7de829c WD |
218 | extern int overwrite_console (void); |
219 | #else | |
220 | int overwrite_console (void) | |
221 | { | |
222 | return (0); | |
223 | } | |
224 | #endif | |
225 | ||
226 | int drv_isa_kbd_init (void) | |
227 | { | |
228 | int error; | |
53677ef1 | 229 | device_t kbddev ; |
c7de829c WD |
230 | char *stdinname = getenv ("stdin"); |
231 | ||
d0ff51ba | 232 | if(isa_kbd_init() == -1) |
c7de829c | 233 | return -1; |
53677ef1 WD |
234 | memset (&kbddev, 0, sizeof(kbddev)); |
235 | strcpy(kbddev.name, DEVNAME); | |
236 | kbddev.flags = DEV_FLAGS_INPUT | DEV_FLAGS_SYSTEM; | |
237 | kbddev.putc = NULL ; | |
c7de829c WD |
238 | kbddev.puts = NULL ; |
239 | kbddev.getc = kbd_getc ; | |
240 | kbddev.tstc = kbd_testc ; | |
241 | ||
53677ef1 | 242 | error = device_register (&kbddev); |
c7de829c WD |
243 | if(error==0) { |
244 | /* check if this is the standard input device */ | |
245 | if(strcmp(stdinname,DEVNAME)==0) { | |
246 | /* reassign the console */ | |
247 | if(overwrite_console()) { | |
248 | return 1; | |
249 | } | |
250 | error=console_assign(stdin,DEVNAME); | |
251 | if(error==0) | |
252 | return 1; | |
8bde7f77 | 253 | else |
c7de829c WD |
254 | return error; |
255 | } | |
256 | return 1; | |
257 | } | |
258 | return error; | |
259 | } | |
260 | ||
261 | /****************************************************************** | |
8bde7f77 | 262 | * Queue handling |
c7de829c WD |
263 | ******************************************************************/ |
264 | /* puts character in the queue and sets up the in and out pointer */ | |
265 | void kbd_put_queue(char data) | |
266 | { | |
267 | if((in_pointer+1)==KBD_BUFFER_LEN) { | |
268 | if(out_pointer==0) { | |
269 | return; /* buffer full */ | |
270 | } else{ | |
271 | in_pointer=0; | |
272 | } | |
273 | } else { | |
274 | if((in_pointer+1)==out_pointer) | |
275 | return; /* buffer full */ | |
276 | in_pointer++; | |
277 | } | |
278 | kbd_buffer[in_pointer]=data; | |
279 | return; | |
280 | } | |
281 | ||
282 | /* test if a character is in the queue */ | |
283 | int kbd_testc(void) | |
284 | { | |
285 | if(in_pointer==out_pointer) | |
286 | return(0); /* no data */ | |
287 | else | |
8bde7f77 | 288 | return(1); |
c7de829c WD |
289 | } |
290 | /* gets the character from the queue */ | |
291 | int kbd_getc(void) | |
292 | { | |
293 | char c; | |
294 | ||
295 | while(in_pointer==out_pointer); | |
8bde7f77 | 296 | if((out_pointer+1)==KBD_BUFFER_LEN) |
c7de829c WD |
297 | out_pointer=0; |
298 | else | |
299 | out_pointer++; | |
300 | c=kbd_buffer[out_pointer]; | |
301 | return (int)c; | |
8bde7f77 | 302 | |
c7de829c WD |
303 | } |
304 | ||
c7de829c WD |
305 | /* set LEDs */ |
306 | ||
307 | void kbd_set_leds(void) | |
308 | { | |
309 | if(caps_lock==0) | |
310 | leds&=~LED_CAP; /* switch caps_lock off */ | |
311 | else | |
312 | leds|=LED_CAP; /* switch on LED */ | |
313 | if(num_lock==0) | |
314 | leds&=~LED_NUM; /* switch LED off */ | |
315 | else | |
316 | leds|=LED_NUM; /* switch on LED */ | |
317 | if(scroll_lock==0) | |
318 | leds&=~LED_SCR; /* switch LED off */ | |
319 | else | |
320 | leds|=LED_SCR; /* switch on LED */ | |
321 | kbd_send_data(KBD_CMD_SET_LEDS); | |
322 | kbd_send_data(leds); | |
323 | } | |
8bde7f77 | 324 | |
53677ef1 | 325 | void handle_keyboard_event (unsigned char scancode) |
c7de829c WD |
326 | { |
327 | unsigned char keycode; | |
328 | ||
329 | /* Convert scancode to keycode */ | |
53677ef1 WD |
330 | PRINTF ("scancode %x\n", scancode); |
331 | if (scancode == 0xe0) { | |
332 | e0 = 1; /* special charakters */ | |
c7de829c WD |
333 | return; |
334 | } | |
53677ef1 WD |
335 | if (e0 == 1) { |
336 | e0 = 0; /* delete flag */ | |
337 | if (!(((scancode & 0x7F) == 0x38) || /* the right ctrl key */ | |
338 | ((scancode & 0x7F) == 0x1D) || /* the right alt key */ | |
339 | ((scancode & 0x7F) == 0x35) || /* the right '/' key */ | |
340 | ((scancode & 0x7F) == 0x1C) || /* the right enter key */ | |
341 | ((scancode) == 0x48) || /* arrow up */ | |
342 | ((scancode) == 0x50) || /* arrow down */ | |
343 | ((scancode) == 0x4b) || /* arrow left */ | |
344 | ((scancode) == 0x4d))) | |
345 | /* arrow right */ | |
c7de829c WD |
346 | /* we swallow unknown e0 codes */ |
347 | return; | |
348 | } | |
349 | /* special cntrl keys */ | |
53677ef1 | 350 | switch (scancode) { |
c7de829c | 351 | case 0x48: |
53677ef1 WD |
352 | kbd_put_queue (27); |
353 | kbd_put_queue (91); | |
354 | kbd_put_queue ('A'); | |
355 | return; | |
c7de829c | 356 | case 0x50: |
53677ef1 WD |
357 | kbd_put_queue (27); |
358 | kbd_put_queue (91); | |
359 | kbd_put_queue ('B'); | |
360 | return; | |
c7de829c | 361 | case 0x4b: |
53677ef1 WD |
362 | kbd_put_queue (27); |
363 | kbd_put_queue (91); | |
364 | kbd_put_queue ('D'); | |
365 | return; | |
c7de829c | 366 | case 0x4D: |
53677ef1 WD |
367 | kbd_put_queue (27); |
368 | kbd_put_queue (91); | |
369 | kbd_put_queue ('C'); | |
370 | return; | |
371 | case 0x58: /* F12 key */ | |
372 | if (ctrl == 1) { | |
373 | extern int console_changed; | |
374 | ||
375 | setenv ("stdin", DEVNAME); | |
376 | setenv ("stdout", "vga"); | |
377 | console_changed = 1; | |
378 | } | |
379 | return; | |
8bde7f77 | 380 | case 0x2A: |
53677ef1 WD |
381 | case 0x36: /* shift pressed */ |
382 | shift = 1; | |
383 | return; /* do nothing else */ | |
384 | case 0xAA: | |
385 | case 0xB6: /* shift released */ | |
386 | shift = 0; | |
387 | return; /* do nothing else */ | |
388 | case 0x38: /* alt pressed */ | |
389 | alt = 1; | |
390 | return; /* do nothing else */ | |
391 | case 0xB8: /* alt released */ | |
392 | alt = 0; | |
393 | return; /* do nothing else */ | |
394 | case 0x1d: /* ctrl pressed */ | |
395 | ctrl = 1; | |
396 | return; /* do nothing else */ | |
397 | case 0x9d: /* ctrl released */ | |
398 | ctrl = 0; | |
399 | return; /* do nothing else */ | |
400 | case 0x46: /* scrollock pressed */ | |
401 | scroll_lock = ~scroll_lock; | |
402 | kbd_set_leds (); | |
403 | return; /* do nothing else */ | |
404 | case 0x3A: /* capslock pressed */ | |
405 | caps_lock = ~caps_lock; | |
406 | kbd_set_leds (); | |
407 | return; | |
408 | case 0x45: /* numlock pressed */ | |
409 | num_lock = ~num_lock; | |
410 | kbd_set_leds (); | |
411 | return; | |
412 | case 0xC6: /* scroll lock released */ | |
413 | case 0xC5: /* num lock released */ | |
414 | case 0xBA: /* caps lock released */ | |
415 | return; /* just swallow */ | |
c7de829c | 416 | } |
53677ef1 | 417 | if ((scancode & 0x80) == 0x80) /* key released */ |
c7de829c WD |
418 | return; |
419 | /* now, decide which table we need */ | |
53677ef1 WD |
420 | if (scancode > (sizeof (kbd_plain_xlate) / sizeof (kbd_plain_xlate[0]))) { /* scancode not in list */ |
421 | PRINTF ("unkown scancode %X\n", scancode); | |
422 | return; /* swallow it */ | |
c7de829c WD |
423 | } |
424 | /* setup plain code first */ | |
53677ef1 WD |
425 | keycode = kbd_plain_xlate[scancode]; |
426 | if (caps_lock == 1) { /* caps_lock is pressed, overwrite plain code */ | |
427 | if (scancode > (sizeof (kbd_shift_xlate) / sizeof (kbd_shift_xlate[0]))) { /* scancode not in list */ | |
428 | PRINTF ("unkown caps-locked scancode %X\n", scancode); | |
429 | return; /* swallow it */ | |
c7de829c | 430 | } |
53677ef1 WD |
431 | keycode = kbd_shift_xlate[scancode]; |
432 | if (keycode < 'A') { /* we only want the alphas capital */ | |
433 | keycode = kbd_plain_xlate[scancode]; | |
c7de829c WD |
434 | } |
435 | } | |
53677ef1 WD |
436 | if (shift == 1) { /* shift overwrites caps_lock */ |
437 | if (scancode > (sizeof (kbd_shift_xlate) / sizeof (kbd_shift_xlate[0]))) { /* scancode not in list */ | |
438 | PRINTF ("unkown shifted scancode %X\n", scancode); | |
439 | return; /* swallow it */ | |
c7de829c | 440 | } |
53677ef1 | 441 | keycode = kbd_shift_xlate[scancode]; |
c7de829c | 442 | } |
53677ef1 WD |
443 | if (ctrl == 1) { /* ctrl overwrites caps_lock and shift */ |
444 | if (scancode > (sizeof (kbd_ctrl_xlate) / sizeof (kbd_ctrl_xlate[0]))) { /* scancode not in list */ | |
445 | PRINTF ("unkown ctrl scancode %X\n", scancode); | |
446 | return; /* swallow it */ | |
c7de829c | 447 | } |
53677ef1 | 448 | keycode = kbd_ctrl_xlate[scancode]; |
c7de829c WD |
449 | } |
450 | /* check if valid keycode */ | |
53677ef1 WD |
451 | if (keycode == 0xff) { |
452 | PRINTF ("unkown scancode %X\n", scancode); | |
453 | return; /* swallow unknown codes */ | |
c7de829c | 454 | } |
8bde7f77 | 455 | |
53677ef1 WD |
456 | kbd_put_queue (keycode); |
457 | PRINTF ("%x\n", keycode); | |
c7de829c WD |
458 | } |
459 | ||
460 | /* | |
461 | * This reads the keyboard status port, and does the | |
462 | * appropriate action. | |
463 | * | |
464 | */ | |
53677ef1 | 465 | unsigned char handle_kbd_event (void) |
c7de829c | 466 | { |
53677ef1 | 467 | unsigned char status = kbd_read_status (); |
c7de829c WD |
468 | unsigned int work = 10000; |
469 | ||
470 | while ((--work > 0) && (status & KBD_STAT_OBF)) { | |
471 | unsigned char scancode; | |
472 | ||
53677ef1 | 473 | scancode = kbd_read_input (); |
c7de829c WD |
474 | |
475 | /* Error bytes must be ignored to make the | |
476 | Synaptics touchpads compaq use work */ | |
477 | /* Ignore error bytes */ | |
53677ef1 WD |
478 | if (!(status & (KBD_STAT_GTO | KBD_STAT_PERR))) { |
479 | if (status & KBD_STAT_MOUSE_OBF); /* not supported: handle_mouse_event(scancode); */ | |
c7de829c | 480 | else |
53677ef1 | 481 | handle_keyboard_event (scancode); |
c7de829c | 482 | } |
53677ef1 | 483 | status = kbd_read_status (); |
c7de829c WD |
484 | } |
485 | if (!work) | |
53677ef1 | 486 | PRINTF ("pc_keyb: controller jammed (0x%02X).\n", status); |
c7de829c WD |
487 | return status; |
488 | } | |
489 | ||
c7de829c WD |
490 | /****************************************************************************** |
491 | * Lowlevel Part of keyboard section | |
8bde7f77 | 492 | */ |
c7de829c WD |
493 | unsigned char kbd_read_status(void) |
494 | { | |
6d0f6bcf | 495 | return(in8(CONFIG_SYS_ISA_IO_BASE_ADDRESS + KDB_COMMAND_PORT)); |
8bde7f77 WD |
496 | } |
497 | ||
c7de829c WD |
498 | unsigned char kbd_read_input(void) |
499 | { | |
6d0f6bcf | 500 | return(in8(CONFIG_SYS_ISA_IO_BASE_ADDRESS + KDB_DATA_PORT)); |
8bde7f77 | 501 | } |
c7de829c WD |
502 | |
503 | void kbd_write_command(unsigned char cmd) | |
504 | { | |
6d0f6bcf | 505 | out8(CONFIG_SYS_ISA_IO_BASE_ADDRESS + KDB_COMMAND_PORT,cmd); |
8bde7f77 WD |
506 | } |
507 | ||
c7de829c WD |
508 | void kbd_write_output(unsigned char data) |
509 | { | |
6d0f6bcf | 510 | out8(CONFIG_SYS_ISA_IO_BASE_ADDRESS + KDB_DATA_PORT, data); |
8bde7f77 WD |
511 | } |
512 | ||
c7de829c WD |
513 | int kbd_read_data(void) |
514 | { | |
515 | int val; | |
516 | unsigned char status; | |
517 | ||
d0ff51ba | 518 | val = -1; |
c7de829c WD |
519 | status = kbd_read_status(); |
520 | if (status & KBD_STAT_OBF) { | |
521 | val = kbd_read_input(); | |
522 | if (status & (KBD_STAT_GTO | KBD_STAT_PERR)) | |
523 | val = -2; | |
524 | } | |
525 | return val; | |
526 | } | |
527 | ||
53677ef1 | 528 | int kbd_wait_for_input (void) |
c7de829c WD |
529 | { |
530 | unsigned long timeout; | |
531 | int val; | |
8bde7f77 | 532 | |
c7de829c | 533 | timeout = KBD_TIMEOUT; |
53677ef1 WD |
534 | val = kbd_read_data (); |
535 | while (val < 0) { | |
536 | if (timeout-- == 0) | |
c7de829c | 537 | return -1; |
53677ef1 WD |
538 | udelay (1000); |
539 | val = kbd_read_data (); | |
c7de829c WD |
540 | } |
541 | return val; | |
542 | } | |
543 | ||
544 | ||
53677ef1 | 545 | int kb_wait (void) |
c7de829c WD |
546 | { |
547 | unsigned long timeout = KBC_TIMEOUT * 10; | |
548 | ||
549 | do { | |
53677ef1 WD |
550 | unsigned char status = handle_kbd_event (); |
551 | ||
c7de829c | 552 | if (!(status & KBD_STAT_IBF)) |
53677ef1 WD |
553 | return 0; /* ok */ |
554 | udelay (1000); | |
c7de829c WD |
555 | timeout--; |
556 | } while (timeout); | |
557 | return 1; | |
558 | } | |
559 | ||
53677ef1 | 560 | void kbd_write_command_w (int data) |
c7de829c | 561 | { |
53677ef1 WD |
562 | if (kb_wait ()) |
563 | PRINTF ("timeout in kbd_write_command_w\n"); | |
564 | kbd_write_command (data); | |
c7de829c WD |
565 | } |
566 | ||
53677ef1 | 567 | void kbd_write_output_w (int data) |
c7de829c | 568 | { |
53677ef1 WD |
569 | if (kb_wait ()) |
570 | PRINTF ("timeout in kbd_write_output_w\n"); | |
571 | kbd_write_output (data); | |
c7de829c WD |
572 | } |
573 | ||
53677ef1 | 574 | void kbd_send_data (unsigned char data) |
c7de829c WD |
575 | { |
576 | unsigned char status; | |
53677ef1 WD |
577 | |
578 | i8259_mask_irq (KBD_INTERRUPT); /* disable interrupt */ | |
579 | kbd_write_output_w (data); | |
580 | status = kbd_wait_for_input (); | |
c7de829c | 581 | if (status == KBD_REPLY_ACK) |
53677ef1 | 582 | i8259_unmask_irq (KBD_INTERRUPT); /* enable interrupt */ |
c7de829c WD |
583 | } |
584 | ||
585 | ||
53677ef1 | 586 | char *kbd_initialize (void) |
c7de829c WD |
587 | { |
588 | int status; | |
589 | ||
53677ef1 | 590 | in_pointer = 0; /* delete in Buffer */ |
c7de829c WD |
591 | out_pointer = 0; |
592 | /* | |
593 | * Test the keyboard interface. | |
594 | * This seems to be the only way to get it going. | |
595 | * If the test is successful a x55 is placed in the input buffer. | |
596 | */ | |
53677ef1 WD |
597 | kbd_write_command_w (KBD_CCMD_SELF_TEST); |
598 | if (kbd_wait_for_input () != 0x55) | |
c7de829c WD |
599 | return "Kbd: failed self test"; |
600 | /* | |
601 | * Perform a keyboard interface test. This causes the controller | |
602 | * to test the keyboard clock and data lines. The results of the | |
603 | * test are placed in the input buffer. | |
604 | */ | |
53677ef1 WD |
605 | kbd_write_command_w (KBD_CCMD_KBD_TEST); |
606 | if (kbd_wait_for_input () != 0x00) | |
c7de829c WD |
607 | return "Kbd: interface failed self test"; |
608 | /* | |
609 | * Enable the keyboard by allowing the keyboard clock to run. | |
610 | */ | |
53677ef1 WD |
611 | kbd_write_command_w (KBD_CCMD_KBD_ENABLE); |
612 | status = kbd_wait_for_input (); | |
c7de829c WD |
613 | /* |
614 | * Reset keyboard. If the read times out | |
615 | * then the assumption is that no keyboard is | |
616 | * plugged into the machine. | |
617 | * This defaults the keyboard to scan-code set 2. | |
618 | * | |
619 | * Set up to try again if the keyboard asks for RESEND. | |
620 | */ | |
621 | do { | |
53677ef1 WD |
622 | kbd_write_output_w (KBD_CMD_RESET); |
623 | status = kbd_wait_for_input (); | |
8bde7f77 | 624 | if (status == KBD_REPLY_ACK) |
c7de829c | 625 | break; |
53677ef1 WD |
626 | if (status != KBD_REPLY_RESEND) { |
627 | PRINTF ("status: %X\n", status); | |
c7de829c WD |
628 | return "Kbd: reset failed, no ACK"; |
629 | } | |
630 | } while (1); | |
53677ef1 | 631 | if (kbd_wait_for_input () != KBD_REPLY_POR) |
c7de829c WD |
632 | return "Kbd: reset failed, no POR"; |
633 | ||
634 | /* | |
635 | * Set keyboard controller mode. During this, the keyboard should be | |
636 | * in the disabled state. | |
637 | * | |
638 | * Set up to try again if the keyboard asks for RESEND. | |
639 | */ | |
640 | do { | |
53677ef1 WD |
641 | kbd_write_output_w (KBD_CMD_DISABLE); |
642 | status = kbd_wait_for_input (); | |
c7de829c WD |
643 | if (status == KBD_REPLY_ACK) |
644 | break; | |
645 | if (status != KBD_REPLY_RESEND) | |
646 | return "Kbd: disable keyboard: no ACK"; | |
647 | } while (1); | |
648 | ||
53677ef1 WD |
649 | kbd_write_command_w (KBD_CCMD_WRITE_MODE); |
650 | kbd_write_output_w (KBD_MODE_KBD_INT | |
651 | | KBD_MODE_SYS | |
652 | | KBD_MODE_DISABLE_MOUSE | KBD_MODE_KCC); | |
c7de829c | 653 | |
0c8721a4 | 654 | /* AMCC powerpc portables need this to use scan-code set 1 -- Cort */ |
53677ef1 WD |
655 | kbd_write_command_w (KBD_CCMD_READ_MODE); |
656 | if (!(kbd_wait_for_input () & KBD_MODE_KCC)) { | |
c7de829c WD |
657 | /* |
658 | * If the controller does not support conversion, | |
659 | * Set the keyboard to scan-code set 1. | |
660 | */ | |
53677ef1 WD |
661 | kbd_write_output_w (0xF0); |
662 | kbd_wait_for_input (); | |
663 | kbd_write_output_w (0x01); | |
664 | kbd_wait_for_input (); | |
c7de829c | 665 | } |
53677ef1 WD |
666 | kbd_write_output_w (KBD_CMD_ENABLE); |
667 | if (kbd_wait_for_input () != KBD_REPLY_ACK) | |
c7de829c WD |
668 | return "Kbd: enable keyboard: no ACK"; |
669 | ||
670 | /* | |
671 | * Finally, set the typematic rate to maximum. | |
672 | */ | |
53677ef1 WD |
673 | kbd_write_output_w (KBD_CMD_SET_RATE); |
674 | if (kbd_wait_for_input () != KBD_REPLY_ACK) | |
c7de829c | 675 | return "Kbd: Set rate: no ACK"; |
53677ef1 WD |
676 | kbd_write_output_w (0x00); |
677 | if (kbd_wait_for_input () != KBD_REPLY_ACK) | |
c7de829c WD |
678 | return "Kbd: Set rate: no ACK"; |
679 | return NULL; | |
680 | } | |
681 | ||
682 | void kbd_interrupt(void) | |
683 | { | |
684 | handle_kbd_event(); | |
685 | } |