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