1 /*- 2 * Copyright (c) 1999 Kazutaka YOKOTA <yokota@zodiac.mech.utsunomiya-u.ac.jp> 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer as 10 * the first lines of this file unmodified. 11 * 2. Redistributions in binary form must reproduce the above copyright 12 * notice, this list of conditions and the following disclaimer in the 13 * documentation and/or other materials provided with the distribution. 14 * 15 * THIS SOFTWARE IS PROVIDED BY THE AUTHORS ``AS IS'' AND ANY EXPRESS OR 16 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 17 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 18 * IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR ANY DIRECT, INDIRECT, 19 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 20 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 21 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 22 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 23 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 24 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 25 * 26 * $FreeBSD$ 27 */ 28 29 #include "opt_kbd.h" 30 #include "opt_atkbd.h" 31 32 #include <sys/param.h> 33 #include <sys/systm.h> 34 #include <sys/kernel.h> 35 #include <sys/bus.h> 36 #include <sys/proc.h> 37 #include <sys/malloc.h> 38 39 #include <machine/bus.h> 40 #include <machine/resource.h> 41 42 #ifdef __i386__ 43 #include <machine/md_var.h> 44 #include <machine/psl.h> 45 #include <machine/vm86.h> 46 #include <machine/pc/bios.h> 47 48 #include <vm/vm.h> 49 #include <vm/pmap.h> 50 #endif /* __i386__ */ 51 52 #include <dev/kbd/kbdreg.h> 53 #include <dev/kbd/atkbdreg.h> 54 #include <dev/kbd/atkbdcreg.h> 55 56 #include <isa/isareg.h> 57 58 static timeout_t atkbd_timeout; 59 60 int 61 atkbd_probe_unit(int unit, int ctlr, int irq, int flags) 62 { 63 keyboard_switch_t *sw; 64 int args[2]; 65 int error; 66 67 sw = kbd_get_switch(ATKBD_DRIVER_NAME); 68 if (sw == NULL) 69 return ENXIO; 70 71 args[0] = ctlr; 72 args[1] = irq; 73 error = (*sw->probe)(unit, args, flags); 74 if (error) 75 return error; 76 return 0; 77 } 78 79 int 80 atkbd_attach_unit(int unit, keyboard_t **kbd, int ctlr, int irq, int flags) 81 { 82 keyboard_switch_t *sw; 83 int args[2]; 84 int error; 85 86 sw = kbd_get_switch(ATKBD_DRIVER_NAME); 87 if (sw == NULL) 88 return ENXIO; 89 90 /* reset, initialize and enable the device */ 91 args[0] = ctlr; 92 args[1] = irq; 93 *kbd = NULL; 94 error = (*sw->probe)(unit, args, flags); 95 if (error) 96 return error; 97 error = (*sw->init)(unit, kbd, args, flags); 98 if (error) 99 return error; 100 (*sw->enable)(*kbd); 101 102 #ifdef KBD_INSTALL_CDEV 103 /* attach a virtual keyboard cdev */ 104 error = kbd_attach(*kbd); 105 if (error) 106 return error; 107 #endif 108 109 /* 110 * This is a kludge to compensate for lost keyboard interrupts. 111 * A similar code used to be in syscons. See below. XXX 112 */ 113 atkbd_timeout(*kbd); 114 115 if (bootverbose) 116 (*sw->diag)(*kbd, bootverbose); 117 return 0; 118 } 119 120 static void 121 atkbd_timeout(void *arg) 122 { 123 keyboard_t *kbd; 124 int s; 125 126 /* 127 * The original text of the following comments are extracted 128 * from syscons.c (1.287) 129 * 130 * With release 2.1 of the Xaccel server, the keyboard is left 131 * hanging pretty often. Apparently an interrupt from the 132 * keyboard is lost, and I don't know why (yet). 133 * This ugly hack calls the low-level interrupt routine if input 134 * is ready for the keyboard and conveniently hides the problem. XXX 135 * 136 * Try removing anything stuck in the keyboard controller; whether 137 * it's a keyboard scan code or mouse data. The low-level 138 * interrupt routine doesn't read the mouse data directly, 139 * but the keyboard controller driver will, as a side effect. 140 */ 141 /* 142 * And here is bde's original comment about this: 143 * 144 * This is necessary to handle edge triggered interrupts - if we 145 * returned when our IRQ is high due to unserviced input, then there 146 * would be no more keyboard IRQs until the keyboard is reset by 147 * external powers. 148 * 149 * The keyboard apparently unwedges the irq in most cases. 150 */ 151 s = spltty(); 152 kbd = (keyboard_t *)arg; 153 if ((*kbdsw[kbd->kb_index]->lock)(kbd, TRUE)) { 154 /* 155 * We have seen the lock flag is not set. Let's reset 156 * the flag early, otherwise the LED update routine fails 157 * which may want the lock during the interrupt routine. 158 */ 159 (*kbdsw[kbd->kb_index]->lock)(kbd, FALSE); 160 if ((*kbdsw[kbd->kb_index]->check_char)(kbd)) 161 (*kbdsw[kbd->kb_index]->intr)(kbd, NULL); 162 } 163 splx(s); 164 timeout(atkbd_timeout, arg, hz/10); 165 } 166 167 /* LOW-LEVEL */ 168 169 #include <machine/limits.h> 170 #include <machine/console.h> 171 #include <machine/clock.h> 172 173 #define ATKBD_DEFAULT 0 174 175 typedef struct atkbd_state { 176 KBDC kbdc; /* keyboard controller */ 177 /* XXX: don't move this field; pcvt 178 * expects `kbdc' to be the first 179 * field in this structure. */ 180 int ks_mode; /* input mode (K_XLATE,K_RAW,K_CODE) */ 181 int ks_flags; /* flags */ 182 #define COMPOSE (1 << 0) 183 int ks_polling; 184 int ks_state; /* shift/lock key state */ 185 int ks_accents; /* accent key index (> 0) */ 186 u_int ks_composed_char; /* composed char code (> 0) */ 187 u_char ks_prefix; /* AT scan code prefix */ 188 } atkbd_state_t; 189 190 /* keyboard driver declaration */ 191 static int atkbd_configure(int flags); 192 static kbd_probe_t atkbd_probe; 193 static kbd_init_t atkbd_init; 194 static kbd_term_t atkbd_term; 195 static kbd_intr_t atkbd_intr; 196 static kbd_test_if_t atkbd_test_if; 197 static kbd_enable_t atkbd_enable; 198 static kbd_disable_t atkbd_disable; 199 static kbd_read_t atkbd_read; 200 static kbd_check_t atkbd_check; 201 static kbd_read_char_t atkbd_read_char; 202 static kbd_check_char_t atkbd_check_char; 203 static kbd_ioctl_t atkbd_ioctl; 204 static kbd_lock_t atkbd_lock; 205 static kbd_clear_state_t atkbd_clear_state; 206 static kbd_get_state_t atkbd_get_state; 207 static kbd_set_state_t atkbd_set_state; 208 static kbd_poll_mode_t atkbd_poll; 209 210 keyboard_switch_t atkbdsw = { 211 atkbd_probe, 212 atkbd_init, 213 atkbd_term, 214 atkbd_intr, 215 atkbd_test_if, 216 atkbd_enable, 217 atkbd_disable, 218 atkbd_read, 219 atkbd_check, 220 atkbd_read_char, 221 atkbd_check_char, 222 atkbd_ioctl, 223 atkbd_lock, 224 atkbd_clear_state, 225 atkbd_get_state, 226 atkbd_set_state, 227 genkbd_get_fkeystr, 228 atkbd_poll, 229 genkbd_diag, 230 }; 231 232 KEYBOARD_DRIVER(atkbd, atkbdsw, atkbd_configure); 233 234 /* local functions */ 235 static int get_typematic(keyboard_t *kbd); 236 static int setup_kbd_port(KBDC kbdc, int port, int intr); 237 static int get_kbd_echo(KBDC kbdc); 238 static int probe_keyboard(KBDC kbdc, int flags); 239 static int init_keyboard(KBDC kbdc, int *type, int flags); 240 static int write_kbd(KBDC kbdc, int command, int data); 241 static int get_kbd_id(KBDC kbdc); 242 static int typematic(int delay, int rate); 243 static int typematic_delay(int delay); 244 static int typematic_rate(int rate); 245 246 /* local variables */ 247 248 /* the initial key map, accent map and fkey strings */ 249 #ifdef ATKBD_DFLT_KEYMAP 250 #define KBD_DFLT_KEYMAP 251 #include "atkbdmap.h" 252 #endif 253 #include <dev/kbd/kbdtables.h> 254 255 /* structures for the default keyboard */ 256 static keyboard_t default_kbd; 257 static atkbd_state_t default_kbd_state; 258 static keymap_t default_keymap; 259 static accentmap_t default_accentmap; 260 static fkeytab_t default_fkeytab[NUM_FKEYS]; 261 262 /* 263 * The back door to the keyboard driver! 264 * This function is called by the console driver, via the kbdio module, 265 * to tickle keyboard drivers when the low-level console is being initialized. 266 * Almost nothing in the kernel has been initialied yet. Try to probe 267 * keyboards if possible. 268 * NOTE: because of the way the low-level conole is initialized, this routine 269 * may be called more than once!! 270 */ 271 static int 272 atkbd_configure(int flags) 273 { 274 keyboard_t *kbd; 275 int arg[2]; 276 int i; 277 278 /* probe the keyboard controller */ 279 atkbdc_configure(); 280 281 /* if the driver is disabled, unregister the keyboard if any */ 282 if ((resource_int_value("atkbd", ATKBD_DEFAULT, "disabled", &i) == 0) 283 && i != 0) { 284 i = kbd_find_keyboard(ATKBD_DRIVER_NAME, ATKBD_DEFAULT); 285 if (i >= 0) { 286 kbd = kbd_get_keyboard(i); 287 kbd_unregister(kbd); 288 kbd->kb_flags &= ~KB_REGISTERED; 289 } 290 return 0; 291 } 292 293 /* XXX: a kludge to obtain the device configuration flags */ 294 if (resource_int_value("atkbd", ATKBD_DEFAULT, "flags", &i) == 0) 295 flags |= i; 296 297 /* probe the default keyboard */ 298 arg[0] = -1; 299 arg[1] = -1; 300 kbd = NULL; 301 if (atkbd_probe(ATKBD_DEFAULT, arg, flags)) 302 return 0; 303 if (atkbd_init(ATKBD_DEFAULT, &kbd, arg, flags)) 304 return 0; 305 306 /* return the number of found keyboards */ 307 return 1; 308 } 309 310 /* low-level functions */ 311 312 /* detect a keyboard */ 313 static int 314 atkbd_probe(int unit, void *arg, int flags) 315 { 316 KBDC kbdc; 317 int *data = (int *)arg; /* data[0]: controller, data[1]: irq */ 318 319 /* XXX */ 320 if (unit == ATKBD_DEFAULT) { 321 if (KBD_IS_PROBED(&default_kbd)) 322 return 0; 323 } 324 325 kbdc = atkbdc_open(data[0]); 326 if (kbdc == NULL) 327 return ENXIO; 328 if (probe_keyboard(kbdc, flags)) { 329 if (flags & KB_CONF_FAIL_IF_NO_KBD) 330 return ENXIO; 331 } 332 return 0; 333 } 334 335 /* reset and initialize the device */ 336 static int 337 atkbd_init(int unit, keyboard_t **kbdp, void *arg, int flags) 338 { 339 keyboard_t *kbd; 340 atkbd_state_t *state; 341 keymap_t *keymap; 342 accentmap_t *accmap; 343 fkeytab_t *fkeymap; 344 int fkeymap_size; 345 int delay[2]; 346 int *data = (int *)arg; /* data[0]: controller, data[1]: irq */ 347 348 /* XXX */ 349 if (unit == ATKBD_DEFAULT) { 350 *kbdp = kbd = &default_kbd; 351 if (KBD_IS_INITIALIZED(kbd) && KBD_IS_CONFIGURED(kbd)) 352 return 0; 353 state = &default_kbd_state; 354 keymap = &default_keymap; 355 accmap = &default_accentmap; 356 fkeymap = default_fkeytab; 357 fkeymap_size = 358 sizeof(default_fkeytab)/sizeof(default_fkeytab[0]); 359 } else if (*kbdp == NULL) { 360 *kbdp = kbd = malloc(sizeof(*kbd), M_DEVBUF, M_NOWAIT); 361 if (kbd == NULL) 362 return ENOMEM; 363 bzero(kbd, sizeof(*kbd)); 364 state = malloc(sizeof(*state), M_DEVBUF, M_NOWAIT); 365 keymap = malloc(sizeof(key_map), M_DEVBUF, M_NOWAIT); 366 accmap = malloc(sizeof(accent_map), M_DEVBUF, M_NOWAIT); 367 fkeymap = malloc(sizeof(fkey_tab), M_DEVBUF, M_NOWAIT); 368 fkeymap_size = sizeof(fkey_tab)/sizeof(fkey_tab[0]); 369 if ((state == NULL) || (keymap == NULL) || (accmap == NULL) 370 || (fkeymap == NULL)) { 371 if (state != NULL) 372 free(state, M_DEVBUF); 373 if (keymap != NULL) 374 free(keymap, M_DEVBUF); 375 if (accmap != NULL) 376 free(accmap, M_DEVBUF); 377 if (fkeymap != NULL) 378 free(fkeymap, M_DEVBUF); 379 free(kbd, M_DEVBUF); 380 return ENOMEM; 381 } 382 bzero(state, sizeof(*state)); 383 } else if (KBD_IS_INITIALIZED(*kbdp) && KBD_IS_CONFIGURED(*kbdp)) { 384 return 0; 385 } else { 386 kbd = *kbdp; 387 state = (atkbd_state_t *)kbd->kb_data; 388 bzero(state, sizeof(*state)); 389 keymap = kbd->kb_keymap; 390 accmap = kbd->kb_accentmap; 391 fkeymap = kbd->kb_fkeytab; 392 fkeymap_size = kbd->kb_fkeytab_size; 393 } 394 395 if (!KBD_IS_PROBED(kbd)) { 396 state->kbdc = atkbdc_open(data[0]); 397 if (state->kbdc == NULL) 398 return ENXIO; 399 kbd_init_struct(kbd, ATKBD_DRIVER_NAME, KB_OTHER, unit, flags, 400 0, 0); 401 bcopy(&key_map, keymap, sizeof(key_map)); 402 bcopy(&accent_map, accmap, sizeof(accent_map)); 403 bcopy(fkey_tab, fkeymap, 404 imin(fkeymap_size*sizeof(fkeymap[0]), sizeof(fkey_tab))); 405 kbd_set_maps(kbd, keymap, accmap, fkeymap, fkeymap_size); 406 kbd->kb_data = (void *)state; 407 408 if (probe_keyboard(state->kbdc, flags)) { /* shouldn't happen */ 409 if (flags & KB_CONF_FAIL_IF_NO_KBD) 410 return ENXIO; 411 } else { 412 KBD_FOUND_DEVICE(kbd); 413 } 414 atkbd_clear_state(kbd); 415 state->ks_mode = K_XLATE; 416 /* 417 * FIXME: set the initial value for lock keys in ks_state 418 * according to the BIOS data? 419 */ 420 KBD_PROBE_DONE(kbd); 421 } 422 if (!KBD_IS_INITIALIZED(kbd) && !(flags & KB_CONF_PROBE_ONLY)) { 423 kbd->kb_config = flags & ~KB_CONF_PROBE_ONLY; 424 if (KBD_HAS_DEVICE(kbd) 425 && init_keyboard(state->kbdc, &kbd->kb_type, kbd->kb_config) 426 && (kbd->kb_config & KB_CONF_FAIL_IF_NO_KBD)) 427 return ENXIO; 428 atkbd_ioctl(kbd, KDSETLED, (caddr_t)&state->ks_state); 429 get_typematic(kbd); 430 delay[0] = kbd->kb_delay1; 431 delay[1] = kbd->kb_delay2; 432 atkbd_ioctl(kbd, KDSETREPEAT, (caddr_t)delay); 433 KBD_INIT_DONE(kbd); 434 } 435 if (!KBD_IS_CONFIGURED(kbd)) { 436 if (kbd_register(kbd) < 0) 437 return ENXIO; 438 KBD_CONFIG_DONE(kbd); 439 } 440 441 return 0; 442 } 443 444 /* finish using this keyboard */ 445 static int 446 atkbd_term(keyboard_t *kbd) 447 { 448 kbd_unregister(kbd); 449 return 0; 450 } 451 452 /* keyboard interrupt routine */ 453 static int 454 atkbd_intr(keyboard_t *kbd, void *arg) 455 { 456 atkbd_state_t *state; 457 int delay[2]; 458 int c; 459 460 if (KBD_IS_ACTIVE(kbd) && KBD_IS_BUSY(kbd)) { 461 /* let the callback function to process the input */ 462 (*kbd->kb_callback.kc_func)(kbd, KBDIO_KEYINPUT, 463 kbd->kb_callback.kc_arg); 464 } else { 465 /* read and discard the input; no one is waiting for input */ 466 do { 467 c = atkbd_read_char(kbd, FALSE); 468 } while (c != NOKEY); 469 470 if (!KBD_HAS_DEVICE(kbd)) { 471 /* 472 * The keyboard was not detected before; 473 * it must have been reconnected! 474 */ 475 state = (atkbd_state_t *)kbd->kb_data; 476 init_keyboard(state->kbdc, &kbd->kb_type, 477 kbd->kb_config); 478 atkbd_ioctl(kbd, KDSETLED, (caddr_t)&state->ks_state); 479 get_typematic(kbd); 480 delay[0] = kbd->kb_delay1; 481 delay[1] = kbd->kb_delay2; 482 atkbd_ioctl(kbd, KDSETREPEAT, (caddr_t)delay); 483 KBD_FOUND_DEVICE(kbd); 484 } 485 } 486 return 0; 487 } 488 489 /* test the interface to the device */ 490 static int 491 atkbd_test_if(keyboard_t *kbd) 492 { 493 int error; 494 int s; 495 496 error = 0; 497 empty_both_buffers(((atkbd_state_t *)kbd->kb_data)->kbdc, 10); 498 s = spltty(); 499 if (!test_controller(((atkbd_state_t *)kbd->kb_data)->kbdc)) 500 error = EIO; 501 else if (test_kbd_port(((atkbd_state_t *)kbd->kb_data)->kbdc) != 0) 502 error = EIO; 503 splx(s); 504 505 return error; 506 } 507 508 /* 509 * Enable the access to the device; until this function is called, 510 * the client cannot read from the keyboard. 511 */ 512 static int 513 atkbd_enable(keyboard_t *kbd) 514 { 515 int s; 516 517 s = spltty(); 518 KBD_ACTIVATE(kbd); 519 splx(s); 520 return 0; 521 } 522 523 /* disallow the access to the device */ 524 static int 525 atkbd_disable(keyboard_t *kbd) 526 { 527 int s; 528 529 s = spltty(); 530 KBD_DEACTIVATE(kbd); 531 splx(s); 532 return 0; 533 } 534 535 /* read one byte from the keyboard if it's allowed */ 536 static int 537 atkbd_read(keyboard_t *kbd, int wait) 538 { 539 int c; 540 541 if (wait) 542 c = read_kbd_data(((atkbd_state_t *)kbd->kb_data)->kbdc); 543 else 544 c = read_kbd_data_no_wait(((atkbd_state_t *)kbd->kb_data)->kbdc); 545 if (c != -1) 546 ++kbd->kb_count; 547 return (KBD_IS_ACTIVE(kbd) ? c : -1); 548 } 549 550 /* check if data is waiting */ 551 static int 552 atkbd_check(keyboard_t *kbd) 553 { 554 if (!KBD_IS_ACTIVE(kbd)) 555 return FALSE; 556 return kbdc_data_ready(((atkbd_state_t *)kbd->kb_data)->kbdc); 557 } 558 559 /* read char from the keyboard */ 560 static u_int 561 atkbd_read_char(keyboard_t *kbd, int wait) 562 { 563 atkbd_state_t *state; 564 u_int action; 565 int scancode; 566 int keycode; 567 568 state = (atkbd_state_t *)kbd->kb_data; 569 next_code: 570 /* do we have a composed char to return? */ 571 if (!(state->ks_flags & COMPOSE) && (state->ks_composed_char > 0)) { 572 action = state->ks_composed_char; 573 state->ks_composed_char = 0; 574 if (action > UCHAR_MAX) 575 return ERRKEY; 576 return action; 577 } 578 579 /* see if there is something in the keyboard port */ 580 if (wait) { 581 do { 582 scancode = read_kbd_data(state->kbdc); 583 } while (scancode == -1); 584 } else { 585 scancode = read_kbd_data_no_wait(state->kbdc); 586 if (scancode == -1) 587 return NOKEY; 588 } 589 ++kbd->kb_count; 590 591 #if KBDIO_DEBUG >= 10 592 printf("atkbd_read_char(): scancode:0x%x\n", scancode); 593 #endif 594 595 /* return the byte as is for the K_RAW mode */ 596 if (state->ks_mode == K_RAW) 597 return scancode; 598 599 /* translate the scan code into a keycode */ 600 keycode = scancode & 0x7F; 601 switch (state->ks_prefix) { 602 case 0x00: /* normal scancode */ 603 switch(scancode) { 604 case 0xB8: /* left alt (compose key) released */ 605 if (state->ks_flags & COMPOSE) { 606 state->ks_flags &= ~COMPOSE; 607 if (state->ks_composed_char > UCHAR_MAX) 608 state->ks_composed_char = 0; 609 } 610 break; 611 case 0x38: /* left alt (compose key) pressed */ 612 if (!(state->ks_flags & COMPOSE)) { 613 state->ks_flags |= COMPOSE; 614 state->ks_composed_char = 0; 615 } 616 break; 617 case 0xE0: 618 case 0xE1: 619 state->ks_prefix = scancode; 620 goto next_code; 621 } 622 break; 623 case 0xE0: /* 0xE0 prefix */ 624 state->ks_prefix = 0; 625 switch (keycode) { 626 case 0x1C: /* right enter key */ 627 keycode = 0x59; 628 break; 629 case 0x1D: /* right ctrl key */ 630 keycode = 0x5A; 631 break; 632 case 0x35: /* keypad divide key */ 633 keycode = 0x5B; 634 break; 635 case 0x37: /* print scrn key */ 636 keycode = 0x5C; 637 break; 638 case 0x38: /* right alt key (alt gr) */ 639 keycode = 0x5D; 640 break; 641 case 0x46: /* ctrl-pause/break on AT 101 (see below) */ 642 keycode = 0x68; 643 break; 644 case 0x47: /* grey home key */ 645 keycode = 0x5E; 646 break; 647 case 0x48: /* grey up arrow key */ 648 keycode = 0x5F; 649 break; 650 case 0x49: /* grey page up key */ 651 keycode = 0x60; 652 break; 653 case 0x4B: /* grey left arrow key */ 654 keycode = 0x61; 655 break; 656 case 0x4D: /* grey right arrow key */ 657 keycode = 0x62; 658 break; 659 case 0x4F: /* grey end key */ 660 keycode = 0x63; 661 break; 662 case 0x50: /* grey down arrow key */ 663 keycode = 0x64; 664 break; 665 case 0x51: /* grey page down key */ 666 keycode = 0x65; 667 break; 668 case 0x52: /* grey insert key */ 669 keycode = 0x66; 670 break; 671 case 0x53: /* grey delete key */ 672 keycode = 0x67; 673 break; 674 /* the following 3 are only used on the MS "Natural" keyboard */ 675 case 0x5b: /* left Window key */ 676 keycode = 0x69; 677 break; 678 case 0x5c: /* right Window key */ 679 keycode = 0x6a; 680 break; 681 case 0x5d: /* menu key */ 682 keycode = 0x6b; 683 break; 684 default: /* ignore everything else */ 685 goto next_code; 686 } 687 break; 688 case 0xE1: /* 0xE1 prefix */ 689 /* 690 * The pause/break key on the 101 keyboard produces: 691 * E1-1D-45 E1-9D-C5 692 * Ctrl-pause/break produces: 693 * E0-46 E0-C6 (See above.) 694 */ 695 state->ks_prefix = 0; 696 if (keycode == 0x1D) 697 state->ks_prefix = 0x1D; 698 goto next_code; 699 /* NOT REACHED */ 700 case 0x1D: /* pause / break */ 701 state->ks_prefix = 0; 702 if (keycode != 0x45) 703 goto next_code; 704 keycode = 0x68; 705 break; 706 } 707 708 if (kbd->kb_type == KB_84) { 709 switch (keycode) { 710 case 0x37: /* *(numpad)/print screen */ 711 if (state->ks_flags & SHIFTS) 712 keycode = 0x5c; /* print screen */ 713 break; 714 case 0x45: /* num lock/pause */ 715 if (state->ks_flags & CTLS) 716 keycode = 0x68; /* pause */ 717 break; 718 case 0x46: /* scroll lock/break */ 719 if (state->ks_flags & CTLS) 720 keycode = 0x6c; /* break */ 721 break; 722 } 723 } else if (kbd->kb_type == KB_101) { 724 switch (keycode) { 725 case 0x5c: /* print screen */ 726 if (state->ks_flags & ALTS) 727 keycode = 0x54; /* sysrq */ 728 break; 729 case 0x68: /* pause/break */ 730 if (state->ks_flags & CTLS) 731 keycode = 0x6c; /* break */ 732 break; 733 } 734 } 735 736 /* return the key code in the K_CODE mode */ 737 if (state->ks_mode == K_CODE) 738 return (keycode | (scancode & 0x80)); 739 740 /* compose a character code */ 741 if (state->ks_flags & COMPOSE) { 742 switch (keycode | (scancode & 0x80)) { 743 /* key pressed, process it */ 744 case 0x47: case 0x48: case 0x49: /* keypad 7,8,9 */ 745 state->ks_composed_char *= 10; 746 state->ks_composed_char += keycode - 0x40; 747 if (state->ks_composed_char > UCHAR_MAX) 748 return ERRKEY; 749 goto next_code; 750 case 0x4B: case 0x4C: case 0x4D: /* keypad 4,5,6 */ 751 state->ks_composed_char *= 10; 752 state->ks_composed_char += keycode - 0x47; 753 if (state->ks_composed_char > UCHAR_MAX) 754 return ERRKEY; 755 goto next_code; 756 case 0x4F: case 0x50: case 0x51: /* keypad 1,2,3 */ 757 state->ks_composed_char *= 10; 758 state->ks_composed_char += keycode - 0x4E; 759 if (state->ks_composed_char > UCHAR_MAX) 760 return ERRKEY; 761 goto next_code; 762 case 0x52: /* keypad 0 */ 763 state->ks_composed_char *= 10; 764 if (state->ks_composed_char > UCHAR_MAX) 765 return ERRKEY; 766 goto next_code; 767 768 /* key released, no interest here */ 769 case 0xC7: case 0xC8: case 0xC9: /* keypad 7,8,9 */ 770 case 0xCB: case 0xCC: case 0xCD: /* keypad 4,5,6 */ 771 case 0xCF: case 0xD0: case 0xD1: /* keypad 1,2,3 */ 772 case 0xD2: /* keypad 0 */ 773 goto next_code; 774 775 case 0x38: /* left alt key */ 776 break; 777 778 default: 779 if (state->ks_composed_char > 0) { 780 state->ks_flags &= ~COMPOSE; 781 state->ks_composed_char = 0; 782 return ERRKEY; 783 } 784 break; 785 } 786 } 787 788 /* keycode to key action */ 789 action = genkbd_keyaction(kbd, keycode, scancode & 0x80, 790 &state->ks_state, &state->ks_accents); 791 if (action == NOKEY) 792 goto next_code; 793 else 794 return action; 795 } 796 797 /* check if char is waiting */ 798 static int 799 atkbd_check_char(keyboard_t *kbd) 800 { 801 atkbd_state_t *state; 802 803 if (!KBD_IS_ACTIVE(kbd)) 804 return FALSE; 805 state = (atkbd_state_t *)kbd->kb_data; 806 if (!(state->ks_flags & COMPOSE) && (state->ks_composed_char > 0)) 807 return TRUE; 808 return kbdc_data_ready(state->kbdc); 809 } 810 811 /* some useful control functions */ 812 static int 813 atkbd_ioctl(keyboard_t *kbd, u_long cmd, caddr_t arg) 814 { 815 /* trasnlate LED_XXX bits into the device specific bits */ 816 static u_char ledmap[8] = { 817 0, 4, 2, 6, 1, 5, 3, 7, 818 }; 819 atkbd_state_t *state = kbd->kb_data; 820 int error; 821 int s; 822 int i; 823 824 s = spltty(); 825 switch (cmd) { 826 827 case KDGKBMODE: /* get keyboard mode */ 828 *(int *)arg = state->ks_mode; 829 break; 830 case KDSKBMODE: /* set keyboard mode */ 831 switch (*(int *)arg) { 832 case K_XLATE: 833 if (state->ks_mode != K_XLATE) { 834 /* make lock key state and LED state match */ 835 state->ks_state &= ~LOCK_MASK; 836 state->ks_state |= KBD_LED_VAL(kbd); 837 } 838 /* FALL THROUGH */ 839 case K_RAW: 840 case K_CODE: 841 if (state->ks_mode != *(int *)arg) { 842 atkbd_clear_state(kbd); 843 state->ks_mode = *(int *)arg; 844 } 845 break; 846 default: 847 splx(s); 848 return EINVAL; 849 } 850 break; 851 852 case KDGETLED: /* get keyboard LED */ 853 *(int *)arg = KBD_LED_VAL(kbd); 854 break; 855 case KDSETLED: /* set keyboard LED */ 856 /* NOTE: lock key state in ks_state won't be changed */ 857 if (*(int *)arg & ~LOCK_MASK) { 858 splx(s); 859 return EINVAL; 860 } 861 i = *(int *)arg; 862 /* replace CAPS LED with ALTGR LED for ALTGR keyboards */ 863 if (state->ks_mode == K_XLATE && 864 kbd->kb_keymap->n_keys > ALTGR_OFFSET) { 865 if (i & ALKED) 866 i |= CLKED; 867 else 868 i &= ~CLKED; 869 } 870 if (KBD_HAS_DEVICE(kbd)) { 871 error = write_kbd(state->kbdc, KBDC_SET_LEDS, 872 ledmap[i & LED_MASK]); 873 if (error) { 874 splx(s); 875 return error; 876 } 877 } 878 KBD_LED_VAL(kbd) = *(int *)arg; 879 break; 880 881 case KDGKBSTATE: /* get lock key state */ 882 *(int *)arg = state->ks_state & LOCK_MASK; 883 break; 884 case KDSKBSTATE: /* set lock key state */ 885 if (*(int *)arg & ~LOCK_MASK) { 886 splx(s); 887 return EINVAL; 888 } 889 state->ks_state &= ~LOCK_MASK; 890 state->ks_state |= *(int *)arg; 891 splx(s); 892 /* set LEDs and quit */ 893 return atkbd_ioctl(kbd, KDSETLED, arg); 894 895 case KDSETREPEAT: /* set keyboard repeat rate (new interface) */ 896 splx(s); 897 if (!KBD_HAS_DEVICE(kbd)) 898 return 0; 899 i = typematic(((int *)arg)[0], ((int *)arg)[1]); 900 error = write_kbd(state->kbdc, KBDC_SET_TYPEMATIC, i); 901 if (error == 0) { 902 kbd->kb_delay1 = typematic_delay(i); 903 kbd->kb_delay2 = typematic_rate(i); 904 } 905 return error; 906 907 case KDSETRAD: /* set keyboard repeat rate (old interface) */ 908 splx(s); 909 if (!KBD_HAS_DEVICE(kbd)) 910 return 0; 911 error = write_kbd(state->kbdc, KBDC_SET_TYPEMATIC, *(int *)arg); 912 if (error == 0) { 913 kbd->kb_delay1 = typematic_delay(*(int *)arg); 914 kbd->kb_delay2 = typematic_rate(*(int *)arg); 915 } 916 return error; 917 918 case PIO_KEYMAP: /* set keyboard translation table */ 919 case PIO_KEYMAPENT: /* set keyboard translation table entry */ 920 case PIO_DEADKEYMAP: /* set accent key translation table */ 921 state->ks_accents = 0; 922 /* FALL THROUGH */ 923 default: 924 splx(s); 925 return genkbd_commonioctl(kbd, cmd, arg); 926 } 927 928 splx(s); 929 return 0; 930 } 931 932 /* lock the access to the keyboard */ 933 static int 934 atkbd_lock(keyboard_t *kbd, int lock) 935 { 936 return kbdc_lock(((atkbd_state_t *)kbd->kb_data)->kbdc, lock); 937 } 938 939 /* clear the internal state of the keyboard */ 940 static void 941 atkbd_clear_state(keyboard_t *kbd) 942 { 943 atkbd_state_t *state; 944 945 state = (atkbd_state_t *)kbd->kb_data; 946 state->ks_flags = 0; 947 state->ks_polling = 0; 948 state->ks_state &= LOCK_MASK; /* preserve locking key state */ 949 state->ks_accents = 0; 950 state->ks_composed_char = 0; 951 #if 0 952 state->ks_prefix = 0; /* XXX */ 953 #endif 954 } 955 956 /* save the internal state */ 957 static int 958 atkbd_get_state(keyboard_t *kbd, void *buf, size_t len) 959 { 960 if (len == 0) 961 return sizeof(atkbd_state_t); 962 if (len < sizeof(atkbd_state_t)) 963 return -1; 964 bcopy(kbd->kb_data, buf, sizeof(atkbd_state_t)); 965 return 0; 966 } 967 968 /* set the internal state */ 969 static int 970 atkbd_set_state(keyboard_t *kbd, void *buf, size_t len) 971 { 972 if (len < sizeof(atkbd_state_t)) 973 return ENOMEM; 974 if (((atkbd_state_t *)kbd->kb_data)->kbdc 975 != ((atkbd_state_t *)buf)->kbdc) 976 return ENOMEM; 977 bcopy(buf, kbd->kb_data, sizeof(atkbd_state_t)); 978 return 0; 979 } 980 981 static int 982 atkbd_poll(keyboard_t *kbd, int on) 983 { 984 atkbd_state_t *state; 985 int s; 986 987 state = (atkbd_state_t *)kbd->kb_data; 988 s = spltty(); 989 if (on) 990 ++state->ks_polling; 991 else 992 --state->ks_polling; 993 splx(s); 994 return 0; 995 } 996 997 /* local functions */ 998 999 static int 1000 get_typematic(keyboard_t *kbd) 1001 { 1002 #ifdef __i386__ 1003 /* 1004 * Only some systems allow us to retrieve the keyboard repeat 1005 * rate previously set via the BIOS... 1006 */ 1007 struct vm86frame vmf; 1008 u_int32_t p; 1009 1010 bzero(&vmf, sizeof(vmf)); 1011 vmf.vmf_ax = 0xc000; 1012 vm86_intcall(0x15, &vmf); 1013 if ((vmf.vmf_eflags & PSL_C) || vmf.vmf_ah) 1014 return ENODEV; 1015 p = BIOS_PADDRTOVADDR(((u_int32_t)vmf.vmf_es << 4) + vmf.vmf_bx); 1016 if ((readb(p + 6) & 0x40) == 0) /* int 16, function 0x09 supported? */ 1017 return ENODEV; 1018 vmf.vmf_ax = 0x0900; 1019 vm86_intcall(0x16, &vmf); 1020 if ((vmf.vmf_al & 0x08) == 0) /* int 16, function 0x0306 supported? */ 1021 return ENODEV; 1022 vmf.vmf_ax = 0x0306; 1023 vm86_intcall(0x16, &vmf); 1024 kbd->kb_delay1 = typematic_delay(vmf.vmf_bh << 5); 1025 kbd->kb_delay2 = typematic_rate(vmf.vmf_bl); 1026 return 0; 1027 #else 1028 return ENODEV; 1029 #endif /* __i386__ */ 1030 } 1031 1032 static int 1033 setup_kbd_port(KBDC kbdc, int port, int intr) 1034 { 1035 if (!set_controller_command_byte(kbdc, 1036 KBD_KBD_CONTROL_BITS, 1037 ((port) ? KBD_ENABLE_KBD_PORT : KBD_DISABLE_KBD_PORT) 1038 | ((intr) ? KBD_ENABLE_KBD_INT : KBD_DISABLE_KBD_INT))) 1039 return 1; 1040 return 0; 1041 } 1042 1043 static int 1044 get_kbd_echo(KBDC kbdc) 1045 { 1046 /* enable the keyboard port, but disable the keyboard intr. */ 1047 if (setup_kbd_port(kbdc, TRUE, FALSE)) 1048 /* CONTROLLER ERROR: there is very little we can do... */ 1049 return ENXIO; 1050 1051 /* see if something is present */ 1052 write_kbd_command(kbdc, KBDC_ECHO); 1053 if (read_kbd_data(kbdc) != KBD_ECHO) { 1054 empty_both_buffers(kbdc, 10); 1055 test_controller(kbdc); 1056 test_kbd_port(kbdc); 1057 return ENXIO; 1058 } 1059 1060 /* enable the keyboard port and intr. */ 1061 if (setup_kbd_port(kbdc, TRUE, TRUE)) { 1062 /* 1063 * CONTROLLER ERROR 1064 * This is serious; the keyboard intr is left disabled! 1065 */ 1066 return ENXIO; 1067 } 1068 1069 return 0; 1070 } 1071 1072 static int 1073 probe_keyboard(KBDC kbdc, int flags) 1074 { 1075 /* 1076 * Don't try to print anything in this function. The low-level 1077 * console may not have been initialized yet... 1078 */ 1079 int err; 1080 int c; 1081 int m; 1082 1083 if (!kbdc_lock(kbdc, TRUE)) { 1084 /* driver error? */ 1085 return ENXIO; 1086 } 1087 1088 /* temporarily block data transmission from the keyboard */ 1089 write_controller_command(kbdc, KBDC_DISABLE_KBD_PORT); 1090 1091 /* flush any noise in the buffer */ 1092 empty_both_buffers(kbdc, 100); 1093 1094 /* save the current keyboard controller command byte */ 1095 m = kbdc_get_device_mask(kbdc) & ~KBD_KBD_CONTROL_BITS; 1096 c = get_controller_command_byte(kbdc); 1097 if (c == -1) { 1098 /* CONTROLLER ERROR */ 1099 kbdc_set_device_mask(kbdc, m); 1100 kbdc_lock(kbdc, FALSE); 1101 return ENXIO; 1102 } 1103 1104 /* 1105 * The keyboard may have been screwed up by the boot block. 1106 * We may just be able to recover from error by testing the controller 1107 * and the keyboard port. The controller command byte needs to be 1108 * saved before this recovery operation, as some controllers seem 1109 * to set the command byte to particular values. 1110 */ 1111 test_controller(kbdc); 1112 test_kbd_port(kbdc); 1113 1114 err = get_kbd_echo(kbdc); 1115 1116 /* 1117 * Even if the keyboard doesn't seem to be present (err != 0), 1118 * we shall enable the keyboard port and interrupt so that 1119 * the driver will be operable when the keyboard is attached 1120 * to the system later. It is NOT recommended to hot-plug 1121 * the AT keyboard, but many people do so... 1122 */ 1123 kbdc_set_device_mask(kbdc, m | KBD_KBD_CONTROL_BITS); 1124 setup_kbd_port(kbdc, TRUE, TRUE); 1125 #if 0 1126 if (err == 0) { 1127 kbdc_set_device_mask(kbdc, m | KBD_KBD_CONTROL_BITS); 1128 } else { 1129 /* try to restore the command byte as before */ 1130 set_controller_command_byte(kbdc, 0xff, c); 1131 kbdc_set_device_mask(kbdc, m); 1132 } 1133 #endif 1134 1135 kbdc_lock(kbdc, FALSE); 1136 return err; 1137 } 1138 1139 static int 1140 init_keyboard(KBDC kbdc, int *type, int flags) 1141 { 1142 int codeset; 1143 int id; 1144 int c; 1145 1146 if (!kbdc_lock(kbdc, TRUE)) { 1147 /* driver error? */ 1148 return EIO; 1149 } 1150 1151 /* temporarily block data transmission from the keyboard */ 1152 write_controller_command(kbdc, KBDC_DISABLE_KBD_PORT); 1153 1154 /* save the current controller command byte */ 1155 empty_both_buffers(kbdc, 200); 1156 c = get_controller_command_byte(kbdc); 1157 if (c == -1) { 1158 /* CONTROLLER ERROR */ 1159 kbdc_lock(kbdc, FALSE); 1160 printf("atkbd: unable to get the current command byte value.\n"); 1161 return EIO; 1162 } 1163 if (bootverbose) 1164 printf("atkbd: the current kbd controller command byte %04x\n", 1165 c); 1166 #if 0 1167 /* override the keyboard lock switch */ 1168 c |= KBD_OVERRIDE_KBD_LOCK; 1169 #endif 1170 1171 /* enable the keyboard port, but disable the keyboard intr. */ 1172 if (setup_kbd_port(kbdc, TRUE, FALSE)) { 1173 /* CONTROLLER ERROR: there is very little we can do... */ 1174 printf("atkbd: unable to set the command byte.\n"); 1175 kbdc_lock(kbdc, FALSE); 1176 return EIO; 1177 } 1178 1179 /* 1180 * Check if we have an XT keyboard before we attempt to reset it. 1181 * The procedure assumes that the keyboard and the controller have 1182 * been set up properly by BIOS and have not been messed up 1183 * during the boot process. 1184 */ 1185 codeset = -1; 1186 if (flags & KB_CONF_ALT_SCANCODESET) 1187 /* the user says there is a XT keyboard */ 1188 codeset = 1; 1189 #ifdef KBD_DETECT_XT_KEYBOARD 1190 else if ((c & KBD_TRANSLATION) == 0) { 1191 /* SET_SCANCODE_SET is not always supported; ignore error */ 1192 if (send_kbd_command_and_data(kbdc, KBDC_SET_SCANCODE_SET, 0) 1193 == KBD_ACK) 1194 codeset = read_kbd_data(kbdc); 1195 } 1196 if (bootverbose) 1197 printf("atkbd: scancode set %d\n", codeset); 1198 #endif /* KBD_DETECT_XT_KEYBOARD */ 1199 1200 *type = KB_OTHER; 1201 id = get_kbd_id(kbdc); 1202 switch(id) { 1203 case 0x41ab: /* 101/102/... Enhanced */ 1204 case 0x83ab: /* ditto */ 1205 case 0x54ab: /* SpaceSaver */ 1206 case 0x84ab: /* ditto */ 1207 #if 0 1208 case 0x90ab: /* 'G' */ 1209 case 0x91ab: /* 'P' */ 1210 case 0x92ab: /* 'A' */ 1211 #endif 1212 *type = KB_101; 1213 break; 1214 case -1: /* AT 84 keyboard doesn't return ID */ 1215 *type = KB_84; 1216 break; 1217 default: 1218 break; 1219 } 1220 if (bootverbose) 1221 printf("atkbd: keyboard ID 0x%x (%d)\n", id, *type); 1222 1223 /* reset keyboard hardware */ 1224 if (!(flags & KB_CONF_NO_RESET) && !reset_kbd(kbdc)) { 1225 /* 1226 * KEYBOARD ERROR 1227 * Keyboard reset may fail either because the keyboard 1228 * doen't exist, or because the keyboard doesn't pass 1229 * the self-test, or the keyboard controller on the 1230 * motherboard and the keyboard somehow fail to shake hands. 1231 * It is just possible, particularly in the last case, 1232 * that the keyoard controller may be left in a hung state. 1233 * test_controller() and test_kbd_port() appear to bring 1234 * the keyboard controller back (I don't know why and how, 1235 * though.) 1236 */ 1237 empty_both_buffers(kbdc, 10); 1238 test_controller(kbdc); 1239 test_kbd_port(kbdc); 1240 /* 1241 * We could disable the keyboard port and interrupt... but, 1242 * the keyboard may still exist (see above). 1243 */ 1244 set_controller_command_byte(kbdc, 0xff, c); 1245 kbdc_lock(kbdc, FALSE); 1246 if (bootverbose) 1247 printf("atkbd: failed to reset the keyboard.\n"); 1248 return EIO; 1249 } 1250 1251 /* 1252 * Allow us to set the XT_KEYBD flag in UserConfig so that keyboards 1253 * such as those on the IBM ThinkPad laptop computers can be used 1254 * with the standard console driver. 1255 */ 1256 if (codeset == 1) { 1257 if (send_kbd_command_and_data(kbdc, 1258 KBDC_SET_SCANCODE_SET, codeset) == KBD_ACK) { 1259 /* XT kbd doesn't need scan code translation */ 1260 c &= ~KBD_TRANSLATION; 1261 } else { 1262 /* 1263 * KEYBOARD ERROR 1264 * The XT kbd isn't usable unless the proper scan 1265 * code set is selected. 1266 */ 1267 set_controller_command_byte(kbdc, 0xff, c); 1268 kbdc_lock(kbdc, FALSE); 1269 printf("atkbd: unable to set the XT keyboard mode.\n"); 1270 return EIO; 1271 } 1272 } 1273 1274 #ifdef __alpha__ 1275 if (send_kbd_command_and_data( 1276 kbdc, KBDC_SET_SCANCODE_SET, 2) != KBD_ACK) { 1277 printf("atkbd: can't set translation.\n"); 1278 1279 } 1280 c |= KBD_TRANSLATION; 1281 #endif 1282 1283 /* enable the keyboard port and intr. */ 1284 if (!set_controller_command_byte(kbdc, 1285 KBD_KBD_CONTROL_BITS | KBD_TRANSLATION | KBD_OVERRIDE_KBD_LOCK, 1286 (c & (KBD_TRANSLATION | KBD_OVERRIDE_KBD_LOCK)) 1287 | KBD_ENABLE_KBD_PORT | KBD_ENABLE_KBD_INT)) { 1288 /* 1289 * CONTROLLER ERROR 1290 * This is serious; we are left with the disabled 1291 * keyboard intr. 1292 */ 1293 set_controller_command_byte(kbdc, 0xff, c); 1294 kbdc_lock(kbdc, FALSE); 1295 printf("atkbd: unable to enable the keyboard port and intr.\n"); 1296 return EIO; 1297 } 1298 1299 kbdc_lock(kbdc, FALSE); 1300 return 0; 1301 } 1302 1303 static int 1304 write_kbd(KBDC kbdc, int command, int data) 1305 { 1306 int s; 1307 1308 /* prevent the timeout routine from polling the keyboard */ 1309 if (!kbdc_lock(kbdc, TRUE)) 1310 return EBUSY; 1311 1312 /* disable the keyboard and mouse interrupt */ 1313 s = spltty(); 1314 #if 0 1315 c = get_controller_command_byte(kbdc); 1316 if ((c == -1) 1317 || !set_controller_command_byte(kbdc, 1318 kbdc_get_device_mask(kbdc), 1319 KBD_DISABLE_KBD_PORT | KBD_DISABLE_KBD_INT 1320 | KBD_DISABLE_AUX_PORT | KBD_DISABLE_AUX_INT)) { 1321 /* CONTROLLER ERROR */ 1322 kbdc_lock(kbdc, FALSE); 1323 splx(s); 1324 return EIO; 1325 } 1326 /* 1327 * Now that the keyboard controller is told not to generate 1328 * the keyboard and mouse interrupts, call `splx()' to allow 1329 * the other tty interrupts. The clock interrupt may also occur, 1330 * but the timeout routine (`scrn_timer()') will be blocked 1331 * by the lock flag set via `kbdc_lock()' 1332 */ 1333 splx(s); 1334 #endif 1335 1336 if (send_kbd_command_and_data(kbdc, command, data) != KBD_ACK) 1337 send_kbd_command(kbdc, KBDC_ENABLE_KBD); 1338 1339 #if 0 1340 /* restore the interrupts */ 1341 if (!set_controller_command_byte(kbdc, 1342 kbdc_get_device_mask(kbdc), 1343 c & (KBD_KBD_CONTROL_BITS | KBD_AUX_CONTROL_BITS))) { 1344 /* CONTROLLER ERROR */ 1345 } 1346 #else 1347 splx(s); 1348 #endif 1349 kbdc_lock(kbdc, FALSE); 1350 1351 return 0; 1352 } 1353 1354 static int 1355 get_kbd_id(KBDC kbdc) 1356 { 1357 int id1, id2; 1358 1359 empty_both_buffers(kbdc, 10); 1360 id1 = id2 = -1; 1361 if (send_kbd_command(kbdc, KBDC_SEND_DEV_ID) != KBD_ACK) 1362 return -1; 1363 1364 DELAY(10000); /* 10 msec delay */ 1365 id1 = read_kbd_data(kbdc); 1366 if (id1 != -1) 1367 id2 = read_kbd_data(kbdc); 1368 1369 if ((id1 == -1) || (id2 == -1)) { 1370 empty_both_buffers(kbdc, 10); 1371 test_controller(kbdc); 1372 test_kbd_port(kbdc); 1373 return -1; 1374 } 1375 return ((id2 << 8) | id1); 1376 } 1377 1378 static int delays[] = { 250, 500, 750, 1000 }; 1379 static int rates[] = { 34, 38, 42, 46, 50, 55, 59, 63, 1380 68, 76, 84, 92, 100, 110, 118, 126, 1381 136, 152, 168, 184, 200, 220, 236, 252, 1382 272, 304, 336, 368, 400, 440, 472, 504 }; 1383 1384 static int 1385 typematic_delay(int i) 1386 { 1387 return delays[(i >> 5) & 3]; 1388 } 1389 1390 static int 1391 typematic_rate(int i) 1392 { 1393 return rates[i & 0x1f]; 1394 } 1395 1396 static int 1397 typematic(int delay, int rate) 1398 { 1399 int value; 1400 int i; 1401 1402 for (i = sizeof(delays)/sizeof(delays[0]) - 1; i > 0; --i) { 1403 if (delay >= delays[i]) 1404 break; 1405 } 1406 value = i << 5; 1407 for (i = sizeof(rates)/sizeof(rates[0]) - 1; i > 0; --i) { 1408 if (rate >= rates[i]) 1409 break; 1410 } 1411 value |= i; 1412 return value; 1413 } 1414