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 (kbd->kb_keymap->n_keys > ALTGR_OFFSET) { 864 if (i & ALKED) 865 i |= CLKED; 866 else 867 i &= ~CLKED; 868 } 869 if (KBD_HAS_DEVICE(kbd)) { 870 error = write_kbd(state->kbdc, KBDC_SET_LEDS, 871 ledmap[i & LED_MASK]); 872 if (error) { 873 splx(s); 874 return error; 875 } 876 } 877 KBD_LED_VAL(kbd) = *(int *)arg; 878 break; 879 880 case KDGKBSTATE: /* get lock key state */ 881 *(int *)arg = state->ks_state & LOCK_MASK; 882 break; 883 case KDSKBSTATE: /* set lock key state */ 884 if (*(int *)arg & ~LOCK_MASK) { 885 splx(s); 886 return EINVAL; 887 } 888 state->ks_state &= ~LOCK_MASK; 889 state->ks_state |= *(int *)arg; 890 splx(s); 891 /* set LEDs and quit */ 892 return atkbd_ioctl(kbd, KDSETLED, arg); 893 894 case KDSETREPEAT: /* set keyboard repeat rate (new interface) */ 895 splx(s); 896 if (!KBD_HAS_DEVICE(kbd)) 897 return 0; 898 i = typematic(((int *)arg)[0], ((int *)arg)[1]); 899 error = write_kbd(state->kbdc, KBDC_SET_TYPEMATIC, i); 900 if (error == 0) { 901 kbd->kb_delay1 = typematic_delay(i); 902 kbd->kb_delay2 = typematic_rate(i); 903 } 904 return error; 905 906 case KDSETRAD: /* set keyboard repeat rate (old interface) */ 907 splx(s); 908 if (!KBD_HAS_DEVICE(kbd)) 909 return 0; 910 error = write_kbd(state->kbdc, KBDC_SET_TYPEMATIC, *(int *)arg); 911 if (error == 0) { 912 kbd->kb_delay1 = typematic_delay(*(int *)arg); 913 kbd->kb_delay2 = typematic_rate(*(int *)arg); 914 } 915 return error; 916 917 case PIO_KEYMAP: /* set keyboard translation table */ 918 case PIO_KEYMAPENT: /* set keyboard translation table entry */ 919 case PIO_DEADKEYMAP: /* set accent key translation table */ 920 state->ks_accents = 0; 921 /* FALL THROUGH */ 922 default: 923 splx(s); 924 return genkbd_commonioctl(kbd, cmd, arg); 925 } 926 927 splx(s); 928 return 0; 929 } 930 931 /* lock the access to the keyboard */ 932 static int 933 atkbd_lock(keyboard_t *kbd, int lock) 934 { 935 return kbdc_lock(((atkbd_state_t *)kbd->kb_data)->kbdc, lock); 936 } 937 938 /* clear the internal state of the keyboard */ 939 static void 940 atkbd_clear_state(keyboard_t *kbd) 941 { 942 atkbd_state_t *state; 943 944 state = (atkbd_state_t *)kbd->kb_data; 945 state->ks_flags = 0; 946 state->ks_polling = 0; 947 state->ks_state &= LOCK_MASK; /* preserve locking key state */ 948 state->ks_accents = 0; 949 state->ks_composed_char = 0; 950 #if 0 951 state->ks_prefix = 0; /* XXX */ 952 #endif 953 } 954 955 /* save the internal state */ 956 static int 957 atkbd_get_state(keyboard_t *kbd, void *buf, size_t len) 958 { 959 if (len == 0) 960 return sizeof(atkbd_state_t); 961 if (len < sizeof(atkbd_state_t)) 962 return -1; 963 bcopy(kbd->kb_data, buf, sizeof(atkbd_state_t)); 964 return 0; 965 } 966 967 /* set the internal state */ 968 static int 969 atkbd_set_state(keyboard_t *kbd, void *buf, size_t len) 970 { 971 if (len < sizeof(atkbd_state_t)) 972 return ENOMEM; 973 if (((atkbd_state_t *)kbd->kb_data)->kbdc 974 != ((atkbd_state_t *)buf)->kbdc) 975 return ENOMEM; 976 bcopy(buf, kbd->kb_data, sizeof(atkbd_state_t)); 977 return 0; 978 } 979 980 static int 981 atkbd_poll(keyboard_t *kbd, int on) 982 { 983 atkbd_state_t *state; 984 int s; 985 986 state = (atkbd_state_t *)kbd->kb_data; 987 s = spltty(); 988 if (on) 989 ++state->ks_polling; 990 else 991 --state->ks_polling; 992 splx(s); 993 return 0; 994 } 995 996 /* local functions */ 997 998 static int 999 get_typematic(keyboard_t *kbd) 1000 { 1001 #ifdef __i386__ 1002 /* 1003 * Only some systems allow us to retrieve the keyboard repeat 1004 * rate previously set via the BIOS... 1005 */ 1006 struct vm86frame vmf; 1007 u_int32_t p; 1008 1009 bzero(&vmf, sizeof(vmf)); 1010 vmf.vmf_ax = 0xc000; 1011 vm86_intcall(0x15, &vmf); 1012 if ((vmf.vmf_eflags & PSL_C) || vmf.vmf_ah) 1013 return ENODEV; 1014 p = BIOS_PADDRTOVADDR(((u_int32_t)vmf.vmf_es << 4) + vmf.vmf_bx); 1015 if ((readb(p + 6) & 0x40) == 0) /* int 16, function 0x09 supported? */ 1016 return ENODEV; 1017 vmf.vmf_ax = 0x0900; 1018 vm86_intcall(0x16, &vmf); 1019 if ((vmf.vmf_al & 0x08) == 0) /* int 16, function 0x0306 supported? */ 1020 return ENODEV; 1021 vmf.vmf_ax = 0x0306; 1022 vm86_intcall(0x16, &vmf); 1023 kbd->kb_delay1 = typematic_delay(vmf.vmf_bh << 5); 1024 kbd->kb_delay2 = typematic_rate(vmf.vmf_bl); 1025 return 0; 1026 #else 1027 return ENODEV; 1028 #endif /* __i386__ */ 1029 } 1030 1031 static int 1032 setup_kbd_port(KBDC kbdc, int port, int intr) 1033 { 1034 if (!set_controller_command_byte(kbdc, 1035 KBD_KBD_CONTROL_BITS, 1036 ((port) ? KBD_ENABLE_KBD_PORT : KBD_DISABLE_KBD_PORT) 1037 | ((intr) ? KBD_ENABLE_KBD_INT : KBD_DISABLE_KBD_INT))) 1038 return 1; 1039 return 0; 1040 } 1041 1042 static int 1043 get_kbd_echo(KBDC kbdc) 1044 { 1045 /* enable the keyboard port, but disable the keyboard intr. */ 1046 if (setup_kbd_port(kbdc, TRUE, FALSE)) 1047 /* CONTROLLER ERROR: there is very little we can do... */ 1048 return ENXIO; 1049 1050 /* see if something is present */ 1051 write_kbd_command(kbdc, KBDC_ECHO); 1052 if (read_kbd_data(kbdc) != KBD_ECHO) { 1053 empty_both_buffers(kbdc, 10); 1054 test_controller(kbdc); 1055 test_kbd_port(kbdc); 1056 return ENXIO; 1057 } 1058 1059 /* enable the keyboard port and intr. */ 1060 if (setup_kbd_port(kbdc, TRUE, TRUE)) { 1061 /* 1062 * CONTROLLER ERROR 1063 * This is serious; the keyboard intr is left disabled! 1064 */ 1065 return ENXIO; 1066 } 1067 1068 return 0; 1069 } 1070 1071 static int 1072 probe_keyboard(KBDC kbdc, int flags) 1073 { 1074 /* 1075 * Don't try to print anything in this function. The low-level 1076 * console may not have been initialized yet... 1077 */ 1078 int err; 1079 int c; 1080 int m; 1081 1082 if (!kbdc_lock(kbdc, TRUE)) { 1083 /* driver error? */ 1084 return ENXIO; 1085 } 1086 1087 /* temporarily block data transmission from the keyboard */ 1088 write_controller_command(kbdc, KBDC_DISABLE_KBD_PORT); 1089 1090 /* flush any noise in the buffer */ 1091 empty_both_buffers(kbdc, 100); 1092 1093 /* save the current keyboard controller command byte */ 1094 m = kbdc_get_device_mask(kbdc) & ~KBD_KBD_CONTROL_BITS; 1095 c = get_controller_command_byte(kbdc); 1096 if (c == -1) { 1097 /* CONTROLLER ERROR */ 1098 kbdc_set_device_mask(kbdc, m); 1099 kbdc_lock(kbdc, FALSE); 1100 return ENXIO; 1101 } 1102 1103 /* 1104 * The keyboard may have been screwed up by the boot block. 1105 * We may just be able to recover from error by testing the controller 1106 * and the keyboard port. The controller command byte needs to be 1107 * saved before this recovery operation, as some controllers seem 1108 * to set the command byte to particular values. 1109 */ 1110 test_controller(kbdc); 1111 test_kbd_port(kbdc); 1112 1113 err = get_kbd_echo(kbdc); 1114 1115 /* 1116 * Even if the keyboard doesn't seem to be present (err != 0), 1117 * we shall enable the keyboard port and interrupt so that 1118 * the driver will be operable when the keyboard is attached 1119 * to the system later. It is NOT recommended to hot-plug 1120 * the AT keyboard, but many people do so... 1121 */ 1122 kbdc_set_device_mask(kbdc, m | KBD_KBD_CONTROL_BITS); 1123 setup_kbd_port(kbdc, TRUE, TRUE); 1124 #if 0 1125 if (err == 0) { 1126 kbdc_set_device_mask(kbdc, m | KBD_KBD_CONTROL_BITS); 1127 } else { 1128 /* try to restore the command byte as before */ 1129 set_controller_command_byte(kbdc, 0xff, c); 1130 kbdc_set_device_mask(kbdc, m); 1131 } 1132 #endif 1133 1134 kbdc_lock(kbdc, FALSE); 1135 return err; 1136 } 1137 1138 static int 1139 init_keyboard(KBDC kbdc, int *type, int flags) 1140 { 1141 int codeset; 1142 int id; 1143 int c; 1144 1145 if (!kbdc_lock(kbdc, TRUE)) { 1146 /* driver error? */ 1147 return EIO; 1148 } 1149 1150 /* temporarily block data transmission from the keyboard */ 1151 write_controller_command(kbdc, KBDC_DISABLE_KBD_PORT); 1152 1153 /* save the current controller command byte */ 1154 empty_both_buffers(kbdc, 200); 1155 c = get_controller_command_byte(kbdc); 1156 if (c == -1) { 1157 /* CONTROLLER ERROR */ 1158 kbdc_lock(kbdc, FALSE); 1159 printf("atkbd: unable to get the current command byte value.\n"); 1160 return EIO; 1161 } 1162 if (bootverbose) 1163 printf("atkbd: the current kbd controller command byte %04x\n", 1164 c); 1165 #if 0 1166 /* override the keyboard lock switch */ 1167 c |= KBD_OVERRIDE_KBD_LOCK; 1168 #endif 1169 1170 /* enable the keyboard port, but disable the keyboard intr. */ 1171 if (setup_kbd_port(kbdc, TRUE, FALSE)) { 1172 /* CONTROLLER ERROR: there is very little we can do... */ 1173 printf("atkbd: unable to set the command byte.\n"); 1174 kbdc_lock(kbdc, FALSE); 1175 return EIO; 1176 } 1177 1178 /* 1179 * Check if we have an XT keyboard before we attempt to reset it. 1180 * The procedure assumes that the keyboard and the controller have 1181 * been set up properly by BIOS and have not been messed up 1182 * during the boot process. 1183 */ 1184 codeset = -1; 1185 if (flags & KB_CONF_ALT_SCANCODESET) 1186 /* the user says there is a XT keyboard */ 1187 codeset = 1; 1188 #ifdef KBD_DETECT_XT_KEYBOARD 1189 else if ((c & KBD_TRANSLATION) == 0) { 1190 /* SET_SCANCODE_SET is not always supported; ignore error */ 1191 if (send_kbd_command_and_data(kbdc, KBDC_SET_SCANCODE_SET, 0) 1192 == KBD_ACK) 1193 codeset = read_kbd_data(kbdc); 1194 } 1195 if (bootverbose) 1196 printf("atkbd: scancode set %d\n", codeset); 1197 #endif /* KBD_DETECT_XT_KEYBOARD */ 1198 1199 *type = KB_OTHER; 1200 id = get_kbd_id(kbdc); 1201 switch(id) { 1202 case 0x41ab: /* 101/102/... Enhanced */ 1203 case 0x83ab: /* ditto */ 1204 case 0x54ab: /* SpaceSaver */ 1205 case 0x84ab: /* ditto */ 1206 #if 0 1207 case 0x90ab: /* 'G' */ 1208 case 0x91ab: /* 'P' */ 1209 case 0x92ab: /* 'A' */ 1210 #endif 1211 *type = KB_101; 1212 break; 1213 case -1: /* AT 84 keyboard doesn't return ID */ 1214 *type = KB_84; 1215 break; 1216 default: 1217 break; 1218 } 1219 if (bootverbose) 1220 printf("atkbd: keyboard ID 0x%x (%d)\n", id, *type); 1221 1222 /* reset keyboard hardware */ 1223 if (!(flags & KB_CONF_NO_RESET) && !reset_kbd(kbdc)) { 1224 /* 1225 * KEYBOARD ERROR 1226 * Keyboard reset may fail either because the keyboard 1227 * doen't exist, or because the keyboard doesn't pass 1228 * the self-test, or the keyboard controller on the 1229 * motherboard and the keyboard somehow fail to shake hands. 1230 * It is just possible, particularly in the last case, 1231 * that the keyoard controller may be left in a hung state. 1232 * test_controller() and test_kbd_port() appear to bring 1233 * the keyboard controller back (I don't know why and how, 1234 * though.) 1235 */ 1236 empty_both_buffers(kbdc, 10); 1237 test_controller(kbdc); 1238 test_kbd_port(kbdc); 1239 /* 1240 * We could disable the keyboard port and interrupt... but, 1241 * the keyboard may still exist (see above). 1242 */ 1243 set_controller_command_byte(kbdc, 0xff, c); 1244 kbdc_lock(kbdc, FALSE); 1245 if (bootverbose) 1246 printf("atkbd: failed to reset the keyboard.\n"); 1247 return EIO; 1248 } 1249 1250 /* 1251 * Allow us to set the XT_KEYBD flag in UserConfig so that keyboards 1252 * such as those on the IBM ThinkPad laptop computers can be used 1253 * with the standard console driver. 1254 */ 1255 if (codeset == 1) { 1256 if (send_kbd_command_and_data(kbdc, 1257 KBDC_SET_SCANCODE_SET, codeset) == KBD_ACK) { 1258 /* XT kbd doesn't need scan code translation */ 1259 c &= ~KBD_TRANSLATION; 1260 } else { 1261 /* 1262 * KEYBOARD ERROR 1263 * The XT kbd isn't usable unless the proper scan 1264 * code set is selected. 1265 */ 1266 set_controller_command_byte(kbdc, 0xff, c); 1267 kbdc_lock(kbdc, FALSE); 1268 printf("atkbd: unable to set the XT keyboard mode.\n"); 1269 return EIO; 1270 } 1271 } 1272 1273 #ifdef __alpha__ 1274 if (send_kbd_command_and_data( 1275 kbdc, KBDC_SET_SCANCODE_SET, 2) != KBD_ACK) { 1276 printf("atkbd: can't set translation.\n"); 1277 1278 } 1279 c |= KBD_TRANSLATION; 1280 #endif 1281 1282 /* enable the keyboard port and intr. */ 1283 if (!set_controller_command_byte(kbdc, 1284 KBD_KBD_CONTROL_BITS | KBD_TRANSLATION | KBD_OVERRIDE_KBD_LOCK, 1285 (c & (KBD_TRANSLATION | KBD_OVERRIDE_KBD_LOCK)) 1286 | KBD_ENABLE_KBD_PORT | KBD_ENABLE_KBD_INT)) { 1287 /* 1288 * CONTROLLER ERROR 1289 * This is serious; we are left with the disabled 1290 * keyboard intr. 1291 */ 1292 set_controller_command_byte(kbdc, 0xff, c); 1293 kbdc_lock(kbdc, FALSE); 1294 printf("atkbd: unable to enable the keyboard port and intr.\n"); 1295 return EIO; 1296 } 1297 1298 kbdc_lock(kbdc, FALSE); 1299 return 0; 1300 } 1301 1302 static int 1303 write_kbd(KBDC kbdc, int command, int data) 1304 { 1305 int s; 1306 1307 /* prevent the timeout routine from polling the keyboard */ 1308 if (!kbdc_lock(kbdc, TRUE)) 1309 return EBUSY; 1310 1311 /* disable the keyboard and mouse interrupt */ 1312 s = spltty(); 1313 #if 0 1314 c = get_controller_command_byte(kbdc); 1315 if ((c == -1) 1316 || !set_controller_command_byte(kbdc, 1317 kbdc_get_device_mask(kbdc), 1318 KBD_DISABLE_KBD_PORT | KBD_DISABLE_KBD_INT 1319 | KBD_DISABLE_AUX_PORT | KBD_DISABLE_AUX_INT)) { 1320 /* CONTROLLER ERROR */ 1321 kbdc_lock(kbdc, FALSE); 1322 splx(s); 1323 return EIO; 1324 } 1325 /* 1326 * Now that the keyboard controller is told not to generate 1327 * the keyboard and mouse interrupts, call `splx()' to allow 1328 * the other tty interrupts. The clock interrupt may also occur, 1329 * but the timeout routine (`scrn_timer()') will be blocked 1330 * by the lock flag set via `kbdc_lock()' 1331 */ 1332 splx(s); 1333 #endif 1334 1335 if (send_kbd_command_and_data(kbdc, command, data) != KBD_ACK) 1336 send_kbd_command(kbdc, KBDC_ENABLE_KBD); 1337 1338 #if 0 1339 /* restore the interrupts */ 1340 if (!set_controller_command_byte(kbdc, 1341 kbdc_get_device_mask(kbdc), 1342 c & (KBD_KBD_CONTROL_BITS | KBD_AUX_CONTROL_BITS))) { 1343 /* CONTROLLER ERROR */ 1344 } 1345 #else 1346 splx(s); 1347 #endif 1348 kbdc_lock(kbdc, FALSE); 1349 1350 return 0; 1351 } 1352 1353 static int 1354 get_kbd_id(KBDC kbdc) 1355 { 1356 int id1, id2; 1357 1358 empty_both_buffers(kbdc, 10); 1359 id1 = id2 = -1; 1360 if (send_kbd_command(kbdc, KBDC_SEND_DEV_ID) != KBD_ACK) 1361 return -1; 1362 1363 DELAY(10000); /* 10 msec delay */ 1364 id1 = read_kbd_data(kbdc); 1365 if (id1 != -1) 1366 id2 = read_kbd_data(kbdc); 1367 1368 if ((id1 == -1) || (id2 == -1)) { 1369 empty_both_buffers(kbdc, 10); 1370 test_controller(kbdc); 1371 test_kbd_port(kbdc); 1372 return -1; 1373 } 1374 return ((id2 << 8) | id1); 1375 } 1376 1377 static int delays[] = { 250, 500, 750, 1000 }; 1378 static int rates[] = { 34, 38, 42, 46, 50, 55, 59, 63, 1379 68, 76, 84, 92, 100, 110, 118, 126, 1380 136, 152, 168, 184, 200, 220, 236, 252, 1381 272, 304, 336, 368, 400, 440, 472, 504 }; 1382 1383 static int 1384 typematic_delay(int i) 1385 { 1386 return delays[(i >> 5) & 3]; 1387 } 1388 1389 static int 1390 typematic_rate(int i) 1391 { 1392 return rates[i & 0x1f]; 1393 } 1394 1395 static int 1396 typematic(int delay, int rate) 1397 { 1398 int value; 1399 int i; 1400 1401 for (i = sizeof(delays)/sizeof(delays[0]) - 1; i > 0; --i) { 1402 if (delay >= delays[i]) 1403 break; 1404 } 1405 value = i << 5; 1406 for (i = sizeof(rates)/sizeof(rates[0]) - 1; i > 0; --i) { 1407 if (rate >= rates[i]) 1408 break; 1409 } 1410 value |= i; 1411 return value; 1412 } 1413