1 /* 2 * kbd.c 3 * 4 * Copyright (c) 2004 Maksim Yevmenkin <m_evmenkin@yahoo.com> 5 * All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. 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 * 16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 17 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 18 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 19 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 20 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 21 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 22 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 23 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 24 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 25 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 26 * SUCH DAMAGE. 27 * 28 * $Id: kbd.c,v 1.2 2004/11/17 21:59:42 max Exp $ 29 * $FreeBSD$ 30 */ 31 32 #include <sys/consio.h> 33 #include <sys/ioctl.h> 34 #include <sys/kbio.h> 35 #include <sys/queue.h> 36 #include <sys/wait.h> 37 #include <assert.h> 38 #include <bluetooth.h> 39 #include <errno.h> 40 #include <fcntl.h> 41 #include <limits.h> 42 #include <stdarg.h> 43 #include <stdio.h> 44 #include <stdlib.h> 45 #include <string.h> 46 #include <syslog.h> 47 #include <unistd.h> 48 #include "bthidd.h" 49 #include "kbd.h" 50 51 static void kbd_write(bitstr_t *m, int fb, int make, int fd); 52 static int kbd_xlate(int code, int make, int *b, int const *eob); 53 54 /* 55 * HID code to PS/2 set 1 code translation table. 56 * 57 * http://www.microsoft.com/whdc/device/input/Scancode.mspx 58 * 59 * The table only contains "make" (key pressed) codes. 60 * The "break" (key released) code is generated as "make" | 0x80 61 */ 62 63 #define E0PREFIX (1 << 31) 64 #define NOBREAK (1 << 30) 65 #define CODEMASK (~(E0PREFIX|NOBREAK)) 66 67 static int const x[] = 68 { 69 /*==================================================*/ 70 /* Name HID code Make Break*/ 71 /*==================================================*/ 72 /* No Event 00 */ -1, /* None */ 73 /* Overrun Error 01 */ NOBREAK|0xFF, /* None */ 74 /* POST Fail 02 */ NOBREAK|0xFC, /* None */ 75 /* ErrorUndefined 03 */ -1, /* Unassigned */ 76 /* a A 04 */ 0x1E, /* 9E */ 77 /* b B 05 */ 0x30, /* B0 */ 78 /* c C 06 */ 0x2E, /* AE */ 79 /* d D 07 */ 0x20, /* A0 */ 80 /* e E 08 */ 0x12, /* 92 */ 81 /* f F 09 */ 0x21, /* A1 */ 82 /* g G 0A */ 0x22, /* A2 */ 83 /* h H 0B */ 0x23, /* A3 */ 84 /* i I 0C */ 0x17, /* 97 */ 85 /* j J 0D */ 0x24, /* A4 */ 86 /* k K 0E */ 0x25, /* A5 */ 87 /* l L 0F */ 0x26, /* A6 */ 88 /* m M 10 */ 0x32, /* B2 */ 89 /* n N 11 */ 0x31, /* B1 */ 90 /* o O 12 */ 0x18, /* 98 */ 91 /* p P 13 */ 0x19, /* 99 */ 92 /* q Q 14 */ 0x10, /* 90 */ 93 /* r R 15 */ 0x13, /* 93 */ 94 /* s S 16 */ 0x1F, /* 9F */ 95 /* t T 17 */ 0x14, /* 94 */ 96 /* u U 18 */ 0x16, /* 96 */ 97 /* v V 19 */ 0x2F, /* AF */ 98 /* w W 1A */ 0x11, /* 91 */ 99 /* x X 1B */ 0x2D, /* AD */ 100 /* y Y 1C */ 0x15, /* 95 */ 101 /* z Z 1D */ 0x2C, /* AC */ 102 /* 1 ! 1E */ 0x02, /* 82 */ 103 /* 2 @ 1F */ 0x03, /* 83 */ 104 /* 3 # 20 */ 0x04, /* 84 */ 105 /* 4 $ 21 */ 0x05, /* 85 */ 106 /* 5 % 22 */ 0x06, /* 86 */ 107 /* 6 ^ 23 */ 0x07, /* 87 */ 108 /* 7 & 24 */ 0x08, /* 88 */ 109 /* 8 * 25 */ 0x09, /* 89 */ 110 /* 9 ( 26 */ 0x0A, /* 8A */ 111 /* 0 ) 27 */ 0x0B, /* 8B */ 112 /* Return 28 */ 0x1C, /* 9C */ 113 /* Escape 29 */ 0x01, /* 81 */ 114 /* Backspace 2A */ 0x0E, /* 8E */ 115 /* Tab 2B */ 0x0F, /* 8F */ 116 /* Space 2C */ 0x39, /* B9 */ 117 /* - _ 2D */ 0x0C, /* 8C */ 118 /* = + 2E */ 0x0D, /* 8D */ 119 /* [ { 2F */ 0x1A, /* 9A */ 120 /* ] } 30 */ 0x1B, /* 9B */ 121 /* \ | 31 */ 0x2B, /* AB */ 122 /* Europe 1 32 */ 0x2B, /* AB */ 123 /* ; : 33 */ 0x27, /* A7 */ 124 /* " ' 34 */ 0x28, /* A8 */ 125 /* ` ~ 35 */ 0x29, /* A9 */ 126 /* comma < 36 */ 0x33, /* B3 */ 127 /* . > 37 */ 0x34, /* B4 */ 128 /* / ? 38 */ 0x35, /* B5 */ 129 /* Caps Lock 39 */ 0x3A, /* BA */ 130 /* F1 3A */ 0x3B, /* BB */ 131 /* F2 3B */ 0x3C, /* BC */ 132 /* F3 3C */ 0x3D, /* BD */ 133 /* F4 3D */ 0x3E, /* BE */ 134 /* F5 3E */ 0x3F, /* BF */ 135 /* F6 3F */ 0x40, /* C0 */ 136 /* F7 40 */ 0x41, /* C1 */ 137 /* F8 41 */ 0x42, /* C2 */ 138 /* F9 42 */ 0x43, /* C3 */ 139 /* F10 43 */ 0x44, /* C4 */ 140 /* F11 44 */ 0x57, /* D7 */ 141 /* F12 45 */ 0x58, /* D8 */ 142 /* Print Screen 46 */ E0PREFIX|37, /* E0 B7 */ 143 /* Scroll Lock 47 */ 0x46, /* C6 */ 144 #if 0 145 /* Break (Ctrl-Pause) 48 */ E0 46 E0 C6, /* None */ 146 /* Pause 48 */ E1 1D 45 E1 9D C5, /* None */ 147 #else 148 /* Break (Ctrl-Pause)/Pause 48 */ NOBREAK /* Special case */, /* None */ 149 #endif 150 /* Insert 49 */ E0PREFIX|0x52, /* E0 D2 */ 151 /* Home 4A */ E0PREFIX|0x47, /* E0 C7 */ 152 /* Page Up 4B */ E0PREFIX|0x49, /* E0 C9 */ 153 /* Delete 4C */ E0PREFIX|0x53, /* E0 D3 */ 154 /* End 4D */ E0PREFIX|0x4F, /* E0 CF */ 155 /* Page Down 4E */ E0PREFIX|0x51, /* E0 D1 */ 156 /* Right Arrow 4F */ E0PREFIX|0x4D, /* E0 CD */ 157 /* Left Arrow 50 */ E0PREFIX|0x4B, /* E0 CB */ 158 /* Down Arrow 51 */ E0PREFIX|0x50, /* E0 D0 */ 159 /* Up Arrow 52 */ E0PREFIX|0x48, /* E0 C8 */ 160 /* Num Lock 53 */ 0x45, /* C5 */ 161 /* Keypad / 54 */ E0PREFIX|0x35, /* E0 B5 */ 162 /* Keypad * 55 */ 0x37, /* B7 */ 163 /* Keypad - 56 */ 0x4A, /* CA */ 164 /* Keypad + 57 */ 0x4E, /* CE */ 165 /* Keypad Enter 58 */ E0PREFIX|0x1C, /* E0 9C */ 166 /* Keypad 1 End 59 */ 0x4F, /* CF */ 167 /* Keypad 2 Down 5A */ 0x50, /* D0 */ 168 /* Keypad 3 PageDn 5B */ 0x51, /* D1 */ 169 /* Keypad 4 Left 5C */ 0x4B, /* CB */ 170 /* Keypad 5 5D */ 0x4C, /* CC */ 171 /* Keypad 6 Right 5E */ 0x4D, /* CD */ 172 /* Keypad 7 Home 5F */ 0x47, /* C7 */ 173 /* Keypad 8 Up 60 */ 0x48, /* C8 */ 174 /* Keypad 9 PageUp 61 */ 0x49, /* C9 */ 175 /* Keypad 0 Insert 62 */ 0x52, /* D2 */ 176 /* Keypad . Delete 63 */ 0x53, /* D3 */ 177 /* Europe 2 64 */ 0x56, /* D6 */ 178 /* App 65 */ E0PREFIX|0x5D, /* E0 DD */ 179 /* Keyboard Power 66 */ E0PREFIX|0x5E, /* E0 DE */ 180 /* Keypad = 67 */ 0x59, /* D9 */ 181 /* F13 68 */ 0x64, /* E4 */ 182 /* F14 69 */ 0x65, /* E5 */ 183 /* F15 6A */ 0x66, /* E6 */ 184 /* F16 6B */ 0x67, /* E7 */ 185 /* F17 6C */ 0x68, /* E8 */ 186 /* F18 6D */ 0x69, /* E9 */ 187 /* F19 6E */ 0x6A, /* EA */ 188 /* F20 6F */ 0x6B, /* EB */ 189 /* F21 70 */ 0x6C, /* EC */ 190 /* F22 71 */ 0x6D, /* ED */ 191 /* F23 72 */ 0x6E, /* EE */ 192 /* F24 73 */ 0x76, /* F6 */ 193 /* Keyboard Execute 74 */ -1, /* Unassigned */ 194 /* Keyboard Help 75 */ -1, /* Unassigned */ 195 /* Keyboard Menu 76 */ -1, /* Unassigned */ 196 /* Keyboard Select 77 */ -1, /* Unassigned */ 197 /* Keyboard Stop 78 */ -1, /* Unassigned */ 198 /* Keyboard Again 79 */ -1, /* Unassigned */ 199 /* Keyboard Undo 7A */ -1, /* Unassigned */ 200 /* Keyboard Cut 7B */ -1, /* Unassigned */ 201 /* Keyboard Copy 7C */ -1, /* Unassigned */ 202 /* Keyboard Paste 7D */ -1, /* Unassigned */ 203 /* Keyboard Find 7E */ -1, /* Unassigned */ 204 /* Keyboard Mute 7F */ -1, /* Unassigned */ 205 /* Keyboard Volume Up 80 */ -1, /* Unassigned */ 206 /* Keyboard Volume Dn 81 */ -1, /* Unassigned */ 207 /* Keyboard Locking Caps Lock 82 */ -1, /* Unassigned */ 208 /* Keyboard Locking Num Lock 83 */ -1, /* Unassigned */ 209 /* Keyboard Locking Scroll Lock 84 */ -1, /* Unassigned */ 210 /* Keypad comma 85 */ 0x7E, /* FE */ 211 /* Keyboard Equal Sign 86 */ -1, /* Unassigned */ 212 /* Keyboard Int'l 1 87 */ 0x73, /* F3 */ 213 /* Keyboard Int'l 2 88 */ 0x70, /* F0 */ 214 /* Keyboard Int'l 2 89 */ 0x7D, /* FD */ 215 /* Keyboard Int'l 4 8A */ 0x79, /* F9 */ 216 /* Keyboard Int'l 5 8B */ 0x7B, /* FB */ 217 /* Keyboard Int'l 6 8C */ 0x5C, /* DC */ 218 /* Keyboard Int'l 7 8D */ -1, /* Unassigned */ 219 /* Keyboard Int'l 8 8E */ -1, /* Unassigned */ 220 /* Keyboard Int'l 9 8F */ -1, /* Unassigned */ 221 /* Keyboard Lang 1 90 */ NOBREAK|0xF2, /* None */ 222 /* Keyboard Lang 2 91 */ NOBREAK|0xF1, /* None */ 223 /* Keyboard Lang 3 92 */ 0x78, /* F8 */ 224 /* Keyboard Lang 4 93 */ 0x77, /* F7 */ 225 /* Keyboard Lang 5 94 */ 0x76, /* F6 */ 226 /* Keyboard Lang 6 95 */ -1, /* Unassigned */ 227 /* Keyboard Lang 7 96 */ -1, /* Unassigned */ 228 /* Keyboard Lang 8 97 */ -1, /* Unassigned */ 229 /* Keyboard Lang 9 98 */ -1, /* Unassigned */ 230 /* Keyboard Alternate Erase 99 */ -1, /* Unassigned */ 231 /* Keyboard SysReq/Attention 9A */ -1, /* Unassigned */ 232 /* Keyboard Cancel 9B */ -1, /* Unassigned */ 233 /* Keyboard Clear 9C */ -1, /* Unassigned */ 234 /* Keyboard Prior 9D */ -1, /* Unassigned */ 235 /* Keyboard Return 9E */ -1, /* Unassigned */ 236 /* Keyboard Separator 9F */ -1, /* Unassigned */ 237 /* Keyboard Out A0 */ -1, /* Unassigned */ 238 /* Keyboard Oper A1 */ -1, /* Unassigned */ 239 /* Keyboard Clear/Again A2 */ -1, /* Unassigned */ 240 /* Keyboard CrSel/Props A3 */ -1, /* Unassigned */ 241 /* Keyboard ExSel A4 */ -1, /* Unassigned */ 242 /* Reserved A5 */ -1, /* Reserved */ 243 /* Reserved A6 */ -1, /* Reserved */ 244 /* Reserved A7 */ -1, /* Reserved */ 245 /* Reserved A8 */ -1, /* Reserved */ 246 /* Reserved A9 */ -1, /* Reserved */ 247 /* Reserved AA */ -1, /* Reserved */ 248 /* Reserved AB */ -1, /* Reserved */ 249 /* Reserved AC */ -1, /* Reserved */ 250 /* Reserved AD */ -1, /* Reserved */ 251 /* Reserved AE */ -1, /* Reserved */ 252 /* Reserved AF */ -1, /* Reserved */ 253 /* Reserved B0 */ -1, /* Reserved */ 254 /* Reserved B1 */ -1, /* Reserved */ 255 /* Reserved B2 */ -1, /* Reserved */ 256 /* Reserved B3 */ -1, /* Reserved */ 257 /* Reserved B4 */ -1, /* Reserved */ 258 /* Reserved B5 */ -1, /* Reserved */ 259 /* Reserved B6 */ -1, /* Reserved */ 260 /* Reserved B7 */ -1, /* Reserved */ 261 /* Reserved B8 */ -1, /* Reserved */ 262 /* Reserved B9 */ -1, /* Reserved */ 263 /* Reserved BA */ -1, /* Reserved */ 264 /* Reserved BB */ -1, /* Reserved */ 265 /* Reserved BC */ -1, /* Reserved */ 266 /* Reserved BD */ -1, /* Reserved */ 267 /* Reserved BE */ -1, /* Reserved */ 268 /* Reserved BF */ -1, /* Reserved */ 269 /* Reserved C0 */ -1, /* Reserved */ 270 /* Reserved C1 */ -1, /* Reserved */ 271 /* Reserved C2 */ -1, /* Reserved */ 272 /* Reserved C3 */ -1, /* Reserved */ 273 /* Reserved C4 */ -1, /* Reserved */ 274 /* Reserved C5 */ -1, /* Reserved */ 275 /* Reserved C6 */ -1, /* Reserved */ 276 /* Reserved C8 */ -1, /* Reserved */ 277 /* Reserved C9 */ -1, /* Reserved */ 278 /* Reserved CA */ -1, /* Reserved */ 279 /* Reserved CB */ -1, /* Reserved */ 280 /* Reserved CC */ -1, /* Reserved */ 281 /* Reserved CD */ -1, /* Reserved */ 282 /* Reserved CE */ -1, /* Reserved */ 283 /* Reserved CF */ -1, /* Reserved */ 284 /* Reserved D0 */ -1, /* Reserved */ 285 /* Reserved D1 */ -1, /* Reserved */ 286 /* Reserved D2 */ -1, /* Reserved */ 287 /* Reserved D3 */ -1, /* Reserved */ 288 /* Reserved D4 */ -1, /* Reserved */ 289 /* Reserved D5 */ -1, /* Reserved */ 290 /* Reserved D6 */ -1, /* Reserved */ 291 /* Reserved D8 */ -1, /* Reserved */ 292 /* Reserved D9 */ -1, /* Reserved */ 293 /* Reserved DA */ -1, /* Reserved */ 294 /* Reserved DB */ -1, /* Reserved */ 295 /* Reserved DC */ -1, /* Reserved */ 296 /* Reserved DD */ -1, /* Reserved */ 297 /* Reserved DE */ -1, /* Reserved */ 298 /* Reserved DF */ -1, /* Reserved */ 299 /* Left Control E0 */ 0x1D, /* 9D */ 300 /* Left Control E0 */ 0x1D, /* 9D */ 301 /* Left Shift E1 */ 0x2A, /* AA */ 302 /* Left Alt E2 */ 0x38, /* B8 */ 303 /* Left GUI E3 */ E0PREFIX|0x5B, /* E0 DB */ 304 /* Right Control E4 */ E0PREFIX|0x1D, /* E0 9D */ 305 /* Right Shift E5 */ 0x36, /* B6 */ 306 /* Right Alt E6 */ E0PREFIX|0x38, /* E0 B8 */ 307 /* Right GUI E7 */ E0PREFIX|0x5C /* E0 DC */ 308 }; 309 310 #define xsize (sizeof(x)/sizeof(x[0])) 311 312 /* 313 * Get a max HID keycode (aligned) 314 */ 315 316 int 317 kbd_maxkey(void) 318 { 319 return (xsize); 320 } 321 322 /* 323 * Process keys 324 */ 325 326 int 327 kbd_process_keys(bthid_session_p s) 328 { 329 bitstr_t r[bitstr_size(xsize)]; 330 int f0, f1, i; 331 332 assert(s != NULL); 333 assert(s->srv != NULL); 334 335 bit_ffs(s->srv->keys, xsize, &f0); 336 bit_ffs(s->keys, xsize, &f1); 337 338 if (f0 == -1) { 339 /* all keys are released, no keys pressed */ 340 if (f1 != -1) { 341 kbd_write(s->keys, f1, 0, s->srv->vkbd); 342 memset(s->keys, 0, bitstr_size(xsize)); 343 } 344 345 return (0); 346 } 347 348 if (f1 == -1) { 349 /* some keys got pressed, no keys released */ 350 if (f0 != -1) { 351 memcpy(s->keys, s->srv->keys, bitstr_size(xsize)); 352 kbd_write(s->keys, f0, 1, s->srv->vkbd); 353 memset(s->srv->keys, 0, bitstr_size(xsize)); 354 } 355 356 return (0); 357 } 358 359 /* some keys got pressed, some keys got released */ 360 memset(r, 0, bitstr_size(xsize)); 361 362 for (i = f1; i < xsize; i++) { 363 if (bit_test(s->keys, i)) { 364 if (!bit_test(s->srv->keys, i)) { 365 bit_clear(s->keys, i); 366 bit_set(r, i); 367 } else 368 bit_clear(s->srv->keys, i); 369 } 370 } 371 372 for (i = f0; i < xsize; i++) { 373 if (bit_test(s->srv->keys, i)) { 374 if (!bit_test(s->keys, i)) 375 bit_set(s->keys, i); 376 else 377 bit_clear(s->srv->keys, i); 378 } 379 } 380 381 bit_ffs(r, xsize, &f0); 382 bit_ffs(s->srv->keys, xsize, &f1); 383 384 if (f0 > 0) 385 kbd_write(r, f0, 0, s->srv->vkbd); 386 387 if (f1 > 0) { 388 kbd_write(s->srv->keys, f1, 1, s->srv->vkbd); 389 memset(s->srv->keys, 0, bitstr_size(xsize)); 390 } 391 392 return (0); 393 } 394 395 /* 396 * Get current keyboard index (fd version) 397 */ 398 399 int 400 kbd_get_index_fd(int fd) 401 { 402 keyboard_info_t info; 403 404 return ((ioctl(fd, KDGKBINFO, &info) < 0)? -1 : info.kb_index); 405 } 406 407 /* 408 * Get current keyboard index (device node version) 409 */ 410 411 int 412 kbd_get_index(char const *device) 413 { 414 int fd, index; 415 416 fd = open(device, O_RDONLY); 417 if (fd < 0) 418 return (-1); 419 420 index = kbd_get_index_fd(fd); 421 422 close(fd); 423 424 return (index); 425 } 426 427 /* 428 * Switch keyboards. Execute external script to switch keyboards. The keyboard 429 * index will be passed to the script in the first argument (argv[1]). We use 430 * external script here to allow user to customize his/her wireless keyboard, 431 * i.e. set mapping etc. In theory, all parameters could be picked up from the 432 * rc.conf. 433 */ 434 435 int 436 kbd_switch(char const *script, int index) 437 { 438 pid_t pid; 439 int status; 440 441 if (script == NULL) { 442 syslog(LOG_NOTICE, "Could not switch keyboards. " \ 443 "Switch script is not defined"); 444 return (-1); 445 } 446 447 if (access(script, X_OK) < 0) { 448 syslog(LOG_ERR, "The %s is not executable. %s (%d)", 449 script, strerror(errno), errno); 450 return (-1); 451 } 452 453 pid = fork(); 454 455 if (pid == (pid_t) -1) { 456 syslog(LOG_ERR, "Could not create process for %s. %s (%d)", 457 script, strerror(errno), errno); 458 return (-1); 459 } 460 461 if (pid == 0) { 462 char arg[16]; 463 char *argv[3] = { (char *) script, arg, NULL }; 464 465 snprintf(arg, sizeof(arg), "%d", index); 466 execv(script, argv); 467 468 syslog(LOG_ERR, "Could not execute '%s %d'. %s (%d)", 469 script, index, strerror(errno), errno); 470 471 exit(1); 472 } 473 474 if (waitpid(pid, &status, 0) < 0) { 475 syslog(LOG_ERR, "Could not waitpid for %s. %s (%d)", 476 script, strerror(errno), errno); 477 return (-1); 478 } 479 480 if (WIFEXITED(status) && WEXITSTATUS(status)) { 481 syslog(LOG_ERR, "External command '%s %d' failed, exit code %d", 482 script, index, WEXITSTATUS(status)); 483 return (-1); 484 } 485 486 return (0); 487 } 488 489 /* 490 * Translate given keymap and write keyscodes 491 */ 492 493 static void 494 kbd_write(bitstr_t *m, int fb, int make, int fd) 495 { 496 int i, *b, *eob, n, buf[64]; 497 498 b = buf; 499 eob = b + sizeof(buf)/sizeof(buf[0]); 500 i = fb; 501 502 while (i < xsize) { 503 if (bit_test(m, i)) { 504 n = kbd_xlate(i, make, b, eob); 505 if (n == -1) { 506 write(fd, buf, (b - buf) * sizeof(buf[0])); 507 b = buf; 508 continue; 509 } 510 511 b += n; 512 } 513 514 i ++; 515 } 516 517 if (b != buf) 518 write(fd, buf, (b - buf) * sizeof(buf[0])); 519 } 520 521 522 /* 523 * Translate HID code into PS/2 code and put codes into buffer b. 524 * Returns the number of codes put in b. Return -1 if buffer has not 525 * enough space. 526 */ 527 528 #undef PUT 529 #define PUT(c, n, b, eob) \ 530 do { \ 531 if ((b) >= (eob)) \ 532 return (-1); \ 533 *(b) = (c); \ 534 (b) ++; \ 535 (n) ++; \ 536 } while (0) 537 538 static int 539 kbd_xlate(int code, int make, int *b, int const *eob) 540 { 541 int c, n; 542 543 n = 0; 544 545 if (code >= xsize) 546 return (0); /* HID code is not in the table */ 547 548 /* Handle special case - Pause/Break */ 549 if (code == 0x48) { 550 if (!make) 551 return (0); /* No break code */ 552 553 #if 0 554 XXX FIXME 555 if (ctrl_is_pressed) { 556 /* Break (Ctrl-Pause) */ 557 PUT(0xe0, n, b, eob); 558 PUT(0x46, n, b, eob); 559 PUT(0xe0, n, b, eob); 560 PUT(0xc6, n, b, eob); 561 } else { 562 /* Pause */ 563 PUT(0xe1, n, b, eob); 564 PUT(0x1d, n, b, eob); 565 PUT(0x45, n, b, eob); 566 PUT(0xe1, n, b, eob); 567 PUT(0x9d, n, b, eob); 568 PUT(0xc5, n, b, eob); 569 } 570 #endif 571 572 return (n); 573 } 574 575 if ((c = x[code]) == -1) 576 return (0); /* HID code translation is not defined */ 577 578 if (make) { 579 if (c & E0PREFIX) 580 PUT(0xe0, n, b, eob); 581 582 PUT((c & CODEMASK), n, b, eob); 583 } else if (!(c & NOBREAK)) { 584 if (c & E0PREFIX) 585 PUT(0xe0, n, b, eob); 586 587 PUT((0x80|(c & CODEMASK)), n, b, eob); 588 } 589 590 return (n); 591 } 592 593