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: src/sys/dev/kbd/atkbd.c,v 1.25.2.4 2002/04/08 19:21:38 asmodai Exp $ 27 * $DragonFly: src/sys/dev/misc/kbd/atkbd.c,v 1.4 2004/05/13 19:44:32 dillon Exp $ 28 */ 29 30 #include "opt_kbd.h" 31 #include "opt_atkbd.h" 32 33 #include <sys/param.h> 34 #include <sys/systm.h> 35 #include <sys/kernel.h> 36 #include <sys/bus.h> 37 #include <sys/proc.h> 38 #include <sys/malloc.h> 39 40 #include <machine/bus.h> 41 #include <machine/resource.h> 42 43 #ifdef __i386__ 44 #include <machine/md_var.h> 45 #include <machine/psl.h> 46 #include <machine/vm86.h> 47 #include <machine/pc/bios.h> 48 49 #include <vm/vm.h> 50 #include <vm/pmap.h> 51 #endif /* __i386__ */ 52 53 #include <sys/kbio.h> 54 #include "kbdreg.h" 55 #include "atkbdreg.h" 56 #include "atkbdcreg.h" 57 58 #include <bus/isa/isareg.h> 59 60 static timeout_t atkbd_timeout; 61 62 int 63 atkbd_probe_unit(int unit, int ctlr, int irq, int flags) 64 { 65 keyboard_switch_t *sw; 66 int args[2]; 67 int error; 68 69 sw = kbd_get_switch(ATKBD_DRIVER_NAME); 70 if (sw == NULL) 71 return ENXIO; 72 73 args[0] = ctlr; 74 args[1] = irq; 75 error = (*sw->probe)(unit, args, flags); 76 if (error) 77 return error; 78 return 0; 79 } 80 81 int 82 atkbd_attach_unit(int unit, keyboard_t **kbd, int ctlr, int irq, int flags) 83 { 84 keyboard_switch_t *sw; 85 int args[2]; 86 int error; 87 88 sw = kbd_get_switch(ATKBD_DRIVER_NAME); 89 if (sw == NULL) 90 return ENXIO; 91 92 /* reset, initialize and enable the device */ 93 args[0] = ctlr; 94 args[1] = irq; 95 *kbd = NULL; 96 error = (*sw->probe)(unit, args, flags); 97 if (error) 98 return error; 99 error = (*sw->init)(unit, kbd, args, flags); 100 if (error) 101 return error; 102 (*sw->enable)(*kbd); 103 104 #ifdef KBD_INSTALL_CDEV 105 /* attach a virtual keyboard cdev */ 106 error = kbd_attach(*kbd); 107 if (error) 108 return error; 109 #endif 110 111 /* 112 * This is a kludge to compensate for lost keyboard interrupts. 113 * A similar code used to be in syscons. See below. XXX 114 */ 115 atkbd_timeout(*kbd); 116 117 if (bootverbose) 118 (*sw->diag)(*kbd, bootverbose); 119 return 0; 120 } 121 122 static void 123 atkbd_timeout(void *arg) 124 { 125 keyboard_t *kbd; 126 int s; 127 128 /* 129 * The original text of the following comments are extracted 130 * from syscons.c (1.287) 131 * 132 * With release 2.1 of the Xaccel server, the keyboard is left 133 * hanging pretty often. Apparently an interrupt from the 134 * keyboard is lost, and I don't know why (yet). 135 * This ugly hack calls the low-level interrupt routine if input 136 * is ready for the keyboard and conveniently hides the problem. XXX 137 * 138 * Try removing anything stuck in the keyboard controller; whether 139 * it's a keyboard scan code or mouse data. The low-level 140 * interrupt routine doesn't read the mouse data directly, 141 * but the keyboard controller driver will, as a side effect. 142 */ 143 /* 144 * And here is bde's original comment about this: 145 * 146 * This is necessary to handle edge triggered interrupts - if we 147 * returned when our IRQ is high due to unserviced input, then there 148 * would be no more keyboard IRQs until the keyboard is reset by 149 * external powers. 150 * 151 * The keyboard apparently unwedges the irq in most cases. 152 */ 153 s = spltty(); 154 kbd = (keyboard_t *)arg; 155 if ((*kbdsw[kbd->kb_index]->lock)(kbd, TRUE)) { 156 /* 157 * We have seen the lock flag is not set. Let's reset 158 * the flag early, otherwise the LED update routine fails 159 * which may want the lock during the interrupt routine. 160 */ 161 (*kbdsw[kbd->kb_index]->lock)(kbd, FALSE); 162 if ((*kbdsw[kbd->kb_index]->check_char)(kbd)) 163 (*kbdsw[kbd->kb_index]->intr)(kbd, NULL); 164 } 165 splx(s); 166 timeout(atkbd_timeout, arg, hz/10); 167 } 168 169 /* LOW-LEVEL */ 170 171 #include <machine/limits.h> 172 #include <machine/clock.h> 173 174 #define ATKBD_DEFAULT 0 175 176 typedef struct atkbd_state { 177 KBDC kbdc; /* keyboard controller */ 178 /* XXX: don't move this field; pcvt 179 * expects `kbdc' to be the first 180 * field in this structure. */ 181 int ks_mode; /* input mode (K_XLATE,K_RAW,K_CODE) */ 182 int ks_flags; /* flags */ 183 #define COMPOSE (1 << 0) 184 int ks_polling; 185 int ks_state; /* shift/lock key state */ 186 int ks_accents; /* accent key index (> 0) */ 187 u_int ks_composed_char; /* composed char code (> 0) */ 188 u_char ks_prefix; /* AT scan code prefix */ 189 } atkbd_state_t; 190 191 /* keyboard driver declaration */ 192 static int atkbd_configure(int flags); 193 static kbd_probe_t atkbd_probe; 194 static kbd_init_t atkbd_init; 195 static kbd_term_t atkbd_term; 196 static kbd_intr_t atkbd_intr; 197 static kbd_test_if_t atkbd_test_if; 198 static kbd_enable_t atkbd_enable; 199 static kbd_disable_t atkbd_disable; 200 static kbd_read_t atkbd_read; 201 static kbd_check_t atkbd_check; 202 static kbd_read_char_t atkbd_read_char; 203 static kbd_check_char_t atkbd_check_char; 204 static kbd_ioctl_t atkbd_ioctl; 205 static kbd_lock_t atkbd_lock; 206 static kbd_clear_state_t atkbd_clear_state; 207 static kbd_get_state_t atkbd_get_state; 208 static kbd_set_state_t atkbd_set_state; 209 static kbd_poll_mode_t atkbd_poll; 210 211 keyboard_switch_t atkbdsw = { 212 atkbd_probe, 213 atkbd_init, 214 atkbd_term, 215 atkbd_intr, 216 atkbd_test_if, 217 atkbd_enable, 218 atkbd_disable, 219 atkbd_read, 220 atkbd_check, 221 atkbd_read_char, 222 atkbd_check_char, 223 atkbd_ioctl, 224 atkbd_lock, 225 atkbd_clear_state, 226 atkbd_get_state, 227 atkbd_set_state, 228 genkbd_get_fkeystr, 229 atkbd_poll, 230 genkbd_diag, 231 }; 232 233 KEYBOARD_DRIVER(atkbd, atkbdsw, atkbd_configure); 234 235 /* local functions */ 236 static int get_typematic(keyboard_t *kbd); 237 static int setup_kbd_port(KBDC kbdc, int port, int intr); 238 static int get_kbd_echo(KBDC kbdc); 239 static int probe_keyboard(KBDC kbdc, int flags); 240 static int init_keyboard(KBDC kbdc, int *type, int flags); 241 static int write_kbd(KBDC kbdc, int command, int data); 242 static int get_kbd_id(KBDC kbdc); 243 static int typematic(int delay, int rate); 244 static int typematic_delay(int delay); 245 static int typematic_rate(int rate); 246 247 /* local variables */ 248 249 /* the initial key map, accent map and fkey strings */ 250 #ifdef ATKBD_DFLT_KEYMAP 251 #define KBD_DFLT_KEYMAP 252 #include "atkbdmap.h" 253 #endif 254 #include "kbdtables.h" 255 256 /* structures for the default keyboard */ 257 static keyboard_t default_kbd; 258 static atkbd_state_t default_kbd_state; 259 static keymap_t default_keymap; 260 static accentmap_t default_accentmap; 261 static fkeytab_t default_fkeytab[NUM_FKEYS]; 262 263 /* 264 * The back door to the keyboard driver! 265 * This function is called by the console driver, via the kbdio module, 266 * to tickle keyboard drivers when the low-level console is being initialized. 267 * Almost nothing in the kernel has been initialied yet. Try to probe 268 * keyboards if possible. 269 * NOTE: because of the way the low-level console is initialized, this routine 270 * may be called more than once!! 271 */ 272 static int 273 atkbd_configure(int flags) 274 { 275 keyboard_t *kbd; 276 int arg[2]; 277 int i; 278 279 /* probe the keyboard controller */ 280 atkbdc_configure(); 281 282 /* if the driver is disabled, unregister the keyboard if any */ 283 if ((resource_int_value("atkbd", ATKBD_DEFAULT, "disabled", &i) == 0) 284 && i != 0) { 285 i = kbd_find_keyboard(ATKBD_DRIVER_NAME, ATKBD_DEFAULT); 286 if (i >= 0) { 287 kbd = kbd_get_keyboard(i); 288 kbd_unregister(kbd); 289 kbd->kb_flags &= ~KB_REGISTERED; 290 } 291 return 0; 292 } 293 294 /* XXX: a kludge to obtain the device configuration flags */ 295 if (resource_int_value("atkbd", ATKBD_DEFAULT, "flags", &i) == 0) 296 flags |= i; 297 298 /* probe the default keyboard */ 299 arg[0] = -1; 300 arg[1] = -1; 301 kbd = NULL; 302 if (atkbd_probe(ATKBD_DEFAULT, arg, flags)) 303 return 0; 304 if (atkbd_init(ATKBD_DEFAULT, &kbd, arg, flags)) 305 return 0; 306 307 /* return the number of found keyboards */ 308 return 1; 309 } 310 311 /* low-level functions */ 312 313 /* detect a keyboard */ 314 static int 315 atkbd_probe(int unit, void *arg, int flags) 316 { 317 KBDC kbdc; 318 int *data = (int *)arg; /* data[0]: controller, data[1]: irq */ 319 320 /* XXX */ 321 if (unit == ATKBD_DEFAULT) { 322 if (KBD_IS_PROBED(&default_kbd)) 323 return 0; 324 } 325 326 kbdc = atkbdc_open(data[0]); 327 if (kbdc == NULL) 328 return ENXIO; 329 if (probe_keyboard(kbdc, flags)) { 330 if (flags & KB_CONF_FAIL_IF_NO_KBD) 331 return ENXIO; 332 } 333 return 0; 334 } 335 336 /* reset and initialize the device */ 337 static int 338 atkbd_init(int unit, keyboard_t **kbdp, void *arg, int flags) 339 { 340 keyboard_t *kbd; 341 atkbd_state_t *state; 342 keymap_t *keymap; 343 accentmap_t *accmap; 344 fkeytab_t *fkeymap; 345 int fkeymap_size; 346 int delay[2]; 347 int *data = (int *)arg; /* data[0]: controller, data[1]: irq */ 348 349 /* XXX */ 350 if (unit == ATKBD_DEFAULT) { 351 *kbdp = kbd = &default_kbd; 352 if (KBD_IS_INITIALIZED(kbd) && KBD_IS_CONFIGURED(kbd)) 353 return 0; 354 state = &default_kbd_state; 355 keymap = &default_keymap; 356 accmap = &default_accentmap; 357 fkeymap = default_fkeytab; 358 fkeymap_size = 359 sizeof(default_fkeytab)/sizeof(default_fkeytab[0]); 360 } else if (*kbdp == NULL) { 361 *kbdp = kbd = malloc(sizeof(*kbd), M_DEVBUF, M_WAITOK|M_ZERO); 362 state = malloc(sizeof(*state), M_DEVBUF, M_WAITOK|M_ZERO); 363 keymap = malloc(sizeof(key_map), M_DEVBUF, M_WAITOK); 364 accmap = malloc(sizeof(accent_map), M_DEVBUF, M_WAITOK); 365 fkeymap = malloc(sizeof(fkey_tab), M_DEVBUF, M_WAITOK); 366 fkeymap_size = sizeof(fkey_tab)/sizeof(fkey_tab[0]); 367 } else if (KBD_IS_INITIALIZED(*kbdp) && KBD_IS_CONFIGURED(*kbdp)) { 368 return 0; 369 } else { 370 kbd = *kbdp; 371 state = (atkbd_state_t *)kbd->kb_data; 372 bzero(state, sizeof(*state)); 373 keymap = kbd->kb_keymap; 374 accmap = kbd->kb_accentmap; 375 fkeymap = kbd->kb_fkeytab; 376 fkeymap_size = kbd->kb_fkeytab_size; 377 } 378 379 if (!KBD_IS_PROBED(kbd)) { 380 state->kbdc = atkbdc_open(data[0]); 381 if (state->kbdc == NULL) 382 return ENXIO; 383 kbd_init_struct(kbd, ATKBD_DRIVER_NAME, KB_OTHER, unit, flags, 384 0, 0); 385 bcopy(&key_map, keymap, sizeof(key_map)); 386 bcopy(&accent_map, accmap, sizeof(accent_map)); 387 bcopy(fkey_tab, fkeymap, 388 imin(fkeymap_size*sizeof(fkeymap[0]), sizeof(fkey_tab))); 389 kbd_set_maps(kbd, keymap, accmap, fkeymap, fkeymap_size); 390 kbd->kb_data = (void *)state; 391 392 if (probe_keyboard(state->kbdc, flags)) { /* shouldn't happen */ 393 if (flags & KB_CONF_FAIL_IF_NO_KBD) 394 return ENXIO; 395 } else { 396 KBD_FOUND_DEVICE(kbd); 397 } 398 atkbd_clear_state(kbd); 399 state->ks_mode = K_XLATE; 400 /* 401 * FIXME: set the initial value for lock keys in ks_state 402 * according to the BIOS data? 403 */ 404 KBD_PROBE_DONE(kbd); 405 } 406 if (!KBD_IS_INITIALIZED(kbd) && !(flags & KB_CONF_PROBE_ONLY)) { 407 kbd->kb_config = flags & ~KB_CONF_PROBE_ONLY; 408 if (KBD_HAS_DEVICE(kbd) 409 && init_keyboard(state->kbdc, &kbd->kb_type, kbd->kb_config) 410 && (kbd->kb_config & KB_CONF_FAIL_IF_NO_KBD)) 411 return ENXIO; 412 atkbd_ioctl(kbd, KDSETLED, (caddr_t)&state->ks_state); 413 get_typematic(kbd); 414 delay[0] = kbd->kb_delay1; 415 delay[1] = kbd->kb_delay2; 416 atkbd_ioctl(kbd, KDSETREPEAT, (caddr_t)delay); 417 KBD_INIT_DONE(kbd); 418 } 419 if (!KBD_IS_CONFIGURED(kbd)) { 420 if (kbd_register(kbd) < 0) 421 return ENXIO; 422 KBD_CONFIG_DONE(kbd); 423 } 424 425 return 0; 426 } 427 428 /* finish using this keyboard */ 429 static int 430 atkbd_term(keyboard_t *kbd) 431 { 432 kbd_unregister(kbd); 433 return 0; 434 } 435 436 /* keyboard interrupt routine */ 437 static int 438 atkbd_intr(keyboard_t *kbd, void *arg) 439 { 440 atkbd_state_t *state; 441 int delay[2]; 442 int c; 443 444 if (KBD_IS_ACTIVE(kbd) && KBD_IS_BUSY(kbd)) { 445 /* let the callback function to process the input */ 446 (*kbd->kb_callback.kc_func)(kbd, KBDIO_KEYINPUT, 447 kbd->kb_callback.kc_arg); 448 } else { 449 /* read and discard the input; no one is waiting for input */ 450 do { 451 c = atkbd_read_char(kbd, FALSE); 452 } while (c != NOKEY); 453 454 if (!KBD_HAS_DEVICE(kbd)) { 455 /* 456 * The keyboard was not detected before; 457 * it must have been reconnected! 458 */ 459 state = (atkbd_state_t *)kbd->kb_data; 460 init_keyboard(state->kbdc, &kbd->kb_type, 461 kbd->kb_config); 462 atkbd_ioctl(kbd, KDSETLED, (caddr_t)&state->ks_state); 463 get_typematic(kbd); 464 delay[0] = kbd->kb_delay1; 465 delay[1] = kbd->kb_delay2; 466 atkbd_ioctl(kbd, KDSETREPEAT, (caddr_t)delay); 467 KBD_FOUND_DEVICE(kbd); 468 } 469 } 470 return 0; 471 } 472 473 /* test the interface to the device */ 474 static int 475 atkbd_test_if(keyboard_t *kbd) 476 { 477 int error; 478 int s; 479 480 error = 0; 481 empty_both_buffers(((atkbd_state_t *)kbd->kb_data)->kbdc, 10); 482 s = spltty(); 483 if (!test_controller(((atkbd_state_t *)kbd->kb_data)->kbdc)) 484 error = EIO; 485 else if (test_kbd_port(((atkbd_state_t *)kbd->kb_data)->kbdc) != 0) 486 error = EIO; 487 splx(s); 488 489 return error; 490 } 491 492 /* 493 * Enable the access to the device; until this function is called, 494 * the client cannot read from the keyboard. 495 */ 496 static int 497 atkbd_enable(keyboard_t *kbd) 498 { 499 int s; 500 501 s = spltty(); 502 KBD_ACTIVATE(kbd); 503 splx(s); 504 return 0; 505 } 506 507 /* disallow the access to the device */ 508 static int 509 atkbd_disable(keyboard_t *kbd) 510 { 511 int s; 512 513 s = spltty(); 514 KBD_DEACTIVATE(kbd); 515 splx(s); 516 return 0; 517 } 518 519 /* read one byte from the keyboard if it's allowed */ 520 static int 521 atkbd_read(keyboard_t *kbd, int wait) 522 { 523 int c; 524 525 if (wait) 526 c = read_kbd_data(((atkbd_state_t *)kbd->kb_data)->kbdc); 527 else 528 c = read_kbd_data_no_wait(((atkbd_state_t *)kbd->kb_data)->kbdc); 529 if (c != -1) 530 ++kbd->kb_count; 531 return (KBD_IS_ACTIVE(kbd) ? c : -1); 532 } 533 534 /* check if data is waiting */ 535 static int 536 atkbd_check(keyboard_t *kbd) 537 { 538 if (!KBD_IS_ACTIVE(kbd)) 539 return FALSE; 540 return kbdc_data_ready(((atkbd_state_t *)kbd->kb_data)->kbdc); 541 } 542 543 /* read char from the keyboard */ 544 static u_int 545 atkbd_read_char(keyboard_t *kbd, int wait) 546 { 547 atkbd_state_t *state; 548 u_int action; 549 int scancode; 550 int keycode; 551 552 state = (atkbd_state_t *)kbd->kb_data; 553 next_code: 554 /* do we have a composed char to return? */ 555 if (!(state->ks_flags & COMPOSE) && (state->ks_composed_char > 0)) { 556 action = state->ks_composed_char; 557 state->ks_composed_char = 0; 558 if (action > UCHAR_MAX) 559 return ERRKEY; 560 return action; 561 } 562 563 /* see if there is something in the keyboard port */ 564 if (wait) { 565 do { 566 scancode = read_kbd_data(state->kbdc); 567 } while (scancode == -1); 568 } else { 569 scancode = read_kbd_data_no_wait(state->kbdc); 570 if (scancode == -1) 571 return NOKEY; 572 } 573 ++kbd->kb_count; 574 575 #if KBDIO_DEBUG >= 10 576 printf("atkbd_read_char(): scancode:0x%x\n", scancode); 577 #endif 578 579 /* return the byte as is for the K_RAW mode */ 580 if (state->ks_mode == K_RAW) 581 return scancode; 582 583 /* translate the scan code into a keycode */ 584 keycode = scancode & 0x7F; 585 switch (state->ks_prefix) { 586 case 0x00: /* normal scancode */ 587 switch(scancode) { 588 case 0xB8: /* left alt (compose key) released */ 589 if (state->ks_flags & COMPOSE) { 590 state->ks_flags &= ~COMPOSE; 591 if (state->ks_composed_char > UCHAR_MAX) 592 state->ks_composed_char = 0; 593 } 594 break; 595 case 0x38: /* left alt (compose key) pressed */ 596 if (!(state->ks_flags & COMPOSE)) { 597 state->ks_flags |= COMPOSE; 598 state->ks_composed_char = 0; 599 } 600 break; 601 case 0xE0: 602 case 0xE1: 603 state->ks_prefix = scancode; 604 goto next_code; 605 } 606 break; 607 case 0xE0: /* 0xE0 prefix */ 608 state->ks_prefix = 0; 609 switch (keycode) { 610 case 0x1C: /* right enter key */ 611 keycode = 0x59; 612 break; 613 case 0x1D: /* right ctrl key */ 614 keycode = 0x5A; 615 break; 616 case 0x35: /* keypad divide key */ 617 keycode = 0x5B; 618 break; 619 case 0x37: /* print scrn key */ 620 keycode = 0x5C; 621 break; 622 case 0x38: /* right alt key (alt gr) */ 623 keycode = 0x5D; 624 break; 625 case 0x46: /* ctrl-pause/break on AT 101 (see below) */ 626 keycode = 0x68; 627 break; 628 case 0x47: /* grey home key */ 629 keycode = 0x5E; 630 break; 631 case 0x48: /* grey up arrow key */ 632 keycode = 0x5F; 633 break; 634 case 0x49: /* grey page up key */ 635 keycode = 0x60; 636 break; 637 case 0x4B: /* grey left arrow key */ 638 keycode = 0x61; 639 break; 640 case 0x4D: /* grey right arrow key */ 641 keycode = 0x62; 642 break; 643 case 0x4F: /* grey end key */ 644 keycode = 0x63; 645 break; 646 case 0x50: /* grey down arrow key */ 647 keycode = 0x64; 648 break; 649 case 0x51: /* grey page down key */ 650 keycode = 0x65; 651 break; 652 case 0x52: /* grey insert key */ 653 keycode = 0x66; 654 break; 655 case 0x53: /* grey delete key */ 656 keycode = 0x67; 657 break; 658 /* the following 3 are only used on the MS "Natural" keyboard */ 659 case 0x5b: /* left Window key */ 660 keycode = 0x69; 661 break; 662 case 0x5c: /* right Window key */ 663 keycode = 0x6a; 664 break; 665 case 0x5d: /* menu key */ 666 keycode = 0x6b; 667 break; 668 default: /* ignore everything else */ 669 goto next_code; 670 } 671 break; 672 case 0xE1: /* 0xE1 prefix */ 673 /* 674 * The pause/break key on the 101 keyboard produces: 675 * E1-1D-45 E1-9D-C5 676 * Ctrl-pause/break produces: 677 * E0-46 E0-C6 (See above.) 678 */ 679 state->ks_prefix = 0; 680 if (keycode == 0x1D) 681 state->ks_prefix = 0x1D; 682 goto next_code; 683 /* NOT REACHED */ 684 case 0x1D: /* pause / break */ 685 state->ks_prefix = 0; 686 if (keycode != 0x45) 687 goto next_code; 688 keycode = 0x68; 689 break; 690 } 691 692 if (kbd->kb_type == KB_84) { 693 switch (keycode) { 694 case 0x37: /* *(numpad)/print screen */ 695 if (state->ks_flags & SHIFTS) 696 keycode = 0x5c; /* print screen */ 697 break; 698 case 0x45: /* num lock/pause */ 699 if (state->ks_flags & CTLS) 700 keycode = 0x68; /* pause */ 701 break; 702 case 0x46: /* scroll lock/break */ 703 if (state->ks_flags & CTLS) 704 keycode = 0x6c; /* break */ 705 break; 706 } 707 } else if (kbd->kb_type == KB_101) { 708 switch (keycode) { 709 case 0x5c: /* print screen */ 710 if (state->ks_flags & ALTS) 711 keycode = 0x54; /* sysrq */ 712 break; 713 case 0x68: /* pause/break */ 714 if (state->ks_flags & CTLS) 715 keycode = 0x6c; /* break */ 716 break; 717 } 718 } 719 720 /* return the key code in the K_CODE mode */ 721 if (state->ks_mode == K_CODE) 722 return (keycode | (scancode & 0x80)); 723 724 /* compose a character code */ 725 if (state->ks_flags & COMPOSE) { 726 switch (keycode | (scancode & 0x80)) { 727 /* key pressed, process it */ 728 case 0x47: case 0x48: case 0x49: /* keypad 7,8,9 */ 729 state->ks_composed_char *= 10; 730 state->ks_composed_char += keycode - 0x40; 731 if (state->ks_composed_char > UCHAR_MAX) 732 return ERRKEY; 733 goto next_code; 734 case 0x4B: case 0x4C: case 0x4D: /* keypad 4,5,6 */ 735 state->ks_composed_char *= 10; 736 state->ks_composed_char += keycode - 0x47; 737 if (state->ks_composed_char > UCHAR_MAX) 738 return ERRKEY; 739 goto next_code; 740 case 0x4F: case 0x50: case 0x51: /* keypad 1,2,3 */ 741 state->ks_composed_char *= 10; 742 state->ks_composed_char += keycode - 0x4E; 743 if (state->ks_composed_char > UCHAR_MAX) 744 return ERRKEY; 745 goto next_code; 746 case 0x52: /* keypad 0 */ 747 state->ks_composed_char *= 10; 748 if (state->ks_composed_char > UCHAR_MAX) 749 return ERRKEY; 750 goto next_code; 751 752 /* key released, no interest here */ 753 case 0xC7: case 0xC8: case 0xC9: /* keypad 7,8,9 */ 754 case 0xCB: case 0xCC: case 0xCD: /* keypad 4,5,6 */ 755 case 0xCF: case 0xD0: case 0xD1: /* keypad 1,2,3 */ 756 case 0xD2: /* keypad 0 */ 757 goto next_code; 758 759 case 0x38: /* left alt key */ 760 break; 761 762 default: 763 if (state->ks_composed_char > 0) { 764 state->ks_flags &= ~COMPOSE; 765 state->ks_composed_char = 0; 766 return ERRKEY; 767 } 768 break; 769 } 770 } 771 772 /* keycode to key action */ 773 action = genkbd_keyaction(kbd, keycode, scancode & 0x80, 774 &state->ks_state, &state->ks_accents); 775 if (action == NOKEY) 776 goto next_code; 777 else 778 return action; 779 } 780 781 /* check if char is waiting */ 782 static int 783 atkbd_check_char(keyboard_t *kbd) 784 { 785 atkbd_state_t *state; 786 787 if (!KBD_IS_ACTIVE(kbd)) 788 return FALSE; 789 state = (atkbd_state_t *)kbd->kb_data; 790 if (!(state->ks_flags & COMPOSE) && (state->ks_composed_char > 0)) 791 return TRUE; 792 return kbdc_data_ready(state->kbdc); 793 } 794 795 /* some useful control functions */ 796 static int 797 atkbd_ioctl(keyboard_t *kbd, u_long cmd, caddr_t arg) 798 { 799 /* trasnlate LED_XXX bits into the device specific bits */ 800 static u_char ledmap[8] = { 801 0, 4, 2, 6, 1, 5, 3, 7, 802 }; 803 atkbd_state_t *state = kbd->kb_data; 804 int error; 805 int s; 806 int i; 807 808 s = spltty(); 809 switch (cmd) { 810 811 case KDGKBMODE: /* get keyboard mode */ 812 *(int *)arg = state->ks_mode; 813 break; 814 case KDSKBMODE: /* set keyboard mode */ 815 switch (*(int *)arg) { 816 case K_XLATE: 817 if (state->ks_mode != K_XLATE) { 818 /* make lock key state and LED state match */ 819 state->ks_state &= ~LOCK_MASK; 820 state->ks_state |= KBD_LED_VAL(kbd); 821 } 822 /* FALL THROUGH */ 823 case K_RAW: 824 case K_CODE: 825 if (state->ks_mode != *(int *)arg) { 826 atkbd_clear_state(kbd); 827 state->ks_mode = *(int *)arg; 828 } 829 break; 830 default: 831 splx(s); 832 return EINVAL; 833 } 834 break; 835 836 case KDGETLED: /* get keyboard LED */ 837 *(int *)arg = KBD_LED_VAL(kbd); 838 break; 839 case KDSETLED: /* set keyboard LED */ 840 /* NOTE: lock key state in ks_state won't be changed */ 841 if (*(int *)arg & ~LOCK_MASK) { 842 splx(s); 843 return EINVAL; 844 } 845 i = *(int *)arg; 846 /* replace CAPS LED with ALTGR LED for ALTGR keyboards */ 847 if (state->ks_mode == K_XLATE && 848 kbd->kb_keymap->n_keys > ALTGR_OFFSET) { 849 if (i & ALKED) 850 i |= CLKED; 851 else 852 i &= ~CLKED; 853 } 854 if (KBD_HAS_DEVICE(kbd)) { 855 error = write_kbd(state->kbdc, KBDC_SET_LEDS, 856 ledmap[i & LED_MASK]); 857 if (error) { 858 splx(s); 859 return error; 860 } 861 } 862 KBD_LED_VAL(kbd) = *(int *)arg; 863 break; 864 865 case KDGKBSTATE: /* get lock key state */ 866 *(int *)arg = state->ks_state & LOCK_MASK; 867 break; 868 case KDSKBSTATE: /* set lock key state */ 869 if (*(int *)arg & ~LOCK_MASK) { 870 splx(s); 871 return EINVAL; 872 } 873 state->ks_state &= ~LOCK_MASK; 874 state->ks_state |= *(int *)arg; 875 splx(s); 876 /* set LEDs and quit */ 877 return atkbd_ioctl(kbd, KDSETLED, arg); 878 879 case KDSETREPEAT: /* set keyboard repeat rate (new interface) */ 880 splx(s); 881 if (!KBD_HAS_DEVICE(kbd)) 882 return 0; 883 i = typematic(((int *)arg)[0], ((int *)arg)[1]); 884 error = write_kbd(state->kbdc, KBDC_SET_TYPEMATIC, i); 885 if (error == 0) { 886 kbd->kb_delay1 = typematic_delay(i); 887 kbd->kb_delay2 = typematic_rate(i); 888 } 889 return error; 890 891 case KDSETRAD: /* set keyboard repeat rate (old interface) */ 892 splx(s); 893 if (!KBD_HAS_DEVICE(kbd)) 894 return 0; 895 error = write_kbd(state->kbdc, KBDC_SET_TYPEMATIC, *(int *)arg); 896 if (error == 0) { 897 kbd->kb_delay1 = typematic_delay(*(int *)arg); 898 kbd->kb_delay2 = typematic_rate(*(int *)arg); 899 } 900 return error; 901 902 case PIO_KEYMAP: /* set keyboard translation table */ 903 case PIO_KEYMAPENT: /* set keyboard translation table entry */ 904 case PIO_DEADKEYMAP: /* set accent key translation table */ 905 state->ks_accents = 0; 906 /* FALL THROUGH */ 907 default: 908 splx(s); 909 return genkbd_commonioctl(kbd, cmd, arg); 910 } 911 912 splx(s); 913 return 0; 914 } 915 916 /* lock the access to the keyboard */ 917 static int 918 atkbd_lock(keyboard_t *kbd, int lock) 919 { 920 return kbdc_lock(((atkbd_state_t *)kbd->kb_data)->kbdc, lock); 921 } 922 923 /* clear the internal state of the keyboard */ 924 static void 925 atkbd_clear_state(keyboard_t *kbd) 926 { 927 atkbd_state_t *state; 928 929 state = (atkbd_state_t *)kbd->kb_data; 930 state->ks_flags = 0; 931 state->ks_polling = 0; 932 state->ks_state &= LOCK_MASK; /* preserve locking key state */ 933 state->ks_accents = 0; 934 state->ks_composed_char = 0; 935 #if 0 936 state->ks_prefix = 0; /* XXX */ 937 #endif 938 } 939 940 /* save the internal state */ 941 static int 942 atkbd_get_state(keyboard_t *kbd, void *buf, size_t len) 943 { 944 if (len == 0) 945 return sizeof(atkbd_state_t); 946 if (len < sizeof(atkbd_state_t)) 947 return -1; 948 bcopy(kbd->kb_data, buf, sizeof(atkbd_state_t)); 949 return 0; 950 } 951 952 /* set the internal state */ 953 static int 954 atkbd_set_state(keyboard_t *kbd, void *buf, size_t len) 955 { 956 if (len < sizeof(atkbd_state_t)) 957 return ENOMEM; 958 if (((atkbd_state_t *)kbd->kb_data)->kbdc 959 != ((atkbd_state_t *)buf)->kbdc) 960 return ENOMEM; 961 bcopy(buf, kbd->kb_data, sizeof(atkbd_state_t)); 962 return 0; 963 } 964 965 static int 966 atkbd_poll(keyboard_t *kbd, int on) 967 { 968 atkbd_state_t *state; 969 int s; 970 971 state = (atkbd_state_t *)kbd->kb_data; 972 s = spltty(); 973 if (on) 974 ++state->ks_polling; 975 else 976 --state->ks_polling; 977 splx(s); 978 return 0; 979 } 980 981 /* local functions */ 982 983 static int 984 get_typematic(keyboard_t *kbd) 985 { 986 #ifdef __i386__ 987 /* 988 * Only some systems allow us to retrieve the keyboard repeat 989 * rate previously set via the BIOS... 990 */ 991 struct vm86frame vmf; 992 u_int32_t p; 993 994 bzero(&vmf, sizeof(vmf)); 995 vmf.vmf_ax = 0xc000; 996 vm86_intcall(0x15, &vmf); 997 if ((vmf.vmf_eflags & PSL_C) || vmf.vmf_ah) 998 return ENODEV; 999 p = BIOS_PADDRTOVADDR(((u_int32_t)vmf.vmf_es << 4) + vmf.vmf_bx); 1000 if ((readb(p + 6) & 0x40) == 0) /* int 16, function 0x09 supported? */ 1001 return ENODEV; 1002 vmf.vmf_ax = 0x0900; 1003 vm86_intcall(0x16, &vmf); 1004 if ((vmf.vmf_al & 0x08) == 0) /* int 16, function 0x0306 supported? */ 1005 return ENODEV; 1006 vmf.vmf_ax = 0x0306; 1007 vm86_intcall(0x16, &vmf); 1008 kbd->kb_delay1 = typematic_delay(vmf.vmf_bh << 5); 1009 kbd->kb_delay2 = typematic_rate(vmf.vmf_bl); 1010 return 0; 1011 #else 1012 return ENODEV; 1013 #endif /* __i386__ */ 1014 } 1015 1016 static int 1017 setup_kbd_port(KBDC kbdc, int port, int intr) 1018 { 1019 if (!set_controller_command_byte(kbdc, 1020 KBD_KBD_CONTROL_BITS, 1021 ((port) ? KBD_ENABLE_KBD_PORT : KBD_DISABLE_KBD_PORT) 1022 | ((intr) ? KBD_ENABLE_KBD_INT : KBD_DISABLE_KBD_INT))) 1023 return 1; 1024 return 0; 1025 } 1026 1027 static int 1028 get_kbd_echo(KBDC kbdc) 1029 { 1030 /* enable the keyboard port, but disable the keyboard intr. */ 1031 if (setup_kbd_port(kbdc, TRUE, FALSE)) 1032 /* CONTROLLER ERROR: there is very little we can do... */ 1033 return ENXIO; 1034 1035 /* see if something is present */ 1036 write_kbd_command(kbdc, KBDC_ECHO); 1037 if (read_kbd_data(kbdc) != KBD_ECHO) { 1038 empty_both_buffers(kbdc, 10); 1039 test_controller(kbdc); 1040 test_kbd_port(kbdc); 1041 return ENXIO; 1042 } 1043 1044 /* enable the keyboard port and intr. */ 1045 if (setup_kbd_port(kbdc, TRUE, TRUE)) { 1046 /* 1047 * CONTROLLER ERROR 1048 * This is serious; the keyboard intr is left disabled! 1049 */ 1050 return ENXIO; 1051 } 1052 1053 return 0; 1054 } 1055 1056 static int 1057 probe_keyboard(KBDC kbdc, int flags) 1058 { 1059 /* 1060 * Don't try to print anything in this function. The low-level 1061 * console may not have been initialized yet... 1062 */ 1063 int err; 1064 int c; 1065 int m; 1066 1067 if (!kbdc_lock(kbdc, TRUE)) { 1068 /* driver error? */ 1069 return ENXIO; 1070 } 1071 1072 /* temporarily block data transmission from the keyboard */ 1073 write_controller_command(kbdc, KBDC_DISABLE_KBD_PORT); 1074 1075 /* flush any noise in the buffer */ 1076 empty_both_buffers(kbdc, 100); 1077 1078 /* save the current keyboard controller command byte */ 1079 m = kbdc_get_device_mask(kbdc) & ~KBD_KBD_CONTROL_BITS; 1080 c = get_controller_command_byte(kbdc); 1081 if (c == -1) { 1082 /* CONTROLLER ERROR */ 1083 kbdc_set_device_mask(kbdc, m); 1084 kbdc_lock(kbdc, FALSE); 1085 return ENXIO; 1086 } 1087 1088 /* 1089 * The keyboard may have been screwed up by the boot block. 1090 * We may just be able to recover from error by testing the controller 1091 * and the keyboard port. The controller command byte needs to be 1092 * saved before this recovery operation, as some controllers seem 1093 * to set the command byte to particular values. 1094 */ 1095 test_controller(kbdc); 1096 test_kbd_port(kbdc); 1097 1098 err = get_kbd_echo(kbdc); 1099 1100 /* 1101 * Even if the keyboard doesn't seem to be present (err != 0), 1102 * we shall enable the keyboard port and interrupt so that 1103 * the driver will be operable when the keyboard is attached 1104 * to the system later. It is NOT recommended to hot-plug 1105 * the AT keyboard, but many people do so... 1106 */ 1107 kbdc_set_device_mask(kbdc, m | KBD_KBD_CONTROL_BITS); 1108 setup_kbd_port(kbdc, TRUE, TRUE); 1109 #if 0 1110 if (err == 0) { 1111 kbdc_set_device_mask(kbdc, m | KBD_KBD_CONTROL_BITS); 1112 } else { 1113 /* try to restore the command byte as before */ 1114 set_controller_command_byte(kbdc, 0xff, c); 1115 kbdc_set_device_mask(kbdc, m); 1116 } 1117 #endif 1118 1119 kbdc_lock(kbdc, FALSE); 1120 return err; 1121 } 1122 1123 static int 1124 init_keyboard(KBDC kbdc, int *type, int flags) 1125 { 1126 int codeset; 1127 int id; 1128 int c; 1129 1130 if (!kbdc_lock(kbdc, TRUE)) { 1131 /* driver error? */ 1132 return EIO; 1133 } 1134 1135 /* temporarily block data transmission from the keyboard */ 1136 write_controller_command(kbdc, KBDC_DISABLE_KBD_PORT); 1137 1138 /* save the current controller command byte */ 1139 empty_both_buffers(kbdc, 200); 1140 c = get_controller_command_byte(kbdc); 1141 if (c == -1) { 1142 /* CONTROLLER ERROR */ 1143 kbdc_lock(kbdc, FALSE); 1144 printf("atkbd: unable to get the current command byte value.\n"); 1145 return EIO; 1146 } 1147 if (bootverbose) 1148 printf("atkbd: the current kbd controller command byte %04x\n", 1149 c); 1150 #if 0 1151 /* override the keyboard lock switch */ 1152 c |= KBD_OVERRIDE_KBD_LOCK; 1153 #endif 1154 1155 /* enable the keyboard port, but disable the keyboard intr. */ 1156 if (setup_kbd_port(kbdc, TRUE, FALSE)) { 1157 /* CONTROLLER ERROR: there is very little we can do... */ 1158 printf("atkbd: unable to set the command byte.\n"); 1159 kbdc_lock(kbdc, FALSE); 1160 return EIO; 1161 } 1162 1163 /* 1164 * Check if we have an XT keyboard before we attempt to reset it. 1165 * The procedure assumes that the keyboard and the controller have 1166 * been set up properly by BIOS and have not been messed up 1167 * during the boot process. 1168 */ 1169 codeset = -1; 1170 if (flags & KB_CONF_ALT_SCANCODESET) 1171 /* the user says there is a XT keyboard */ 1172 codeset = 1; 1173 #ifdef KBD_DETECT_XT_KEYBOARD 1174 else if ((c & KBD_TRANSLATION) == 0) { 1175 /* SET_SCANCODE_SET is not always supported; ignore error */ 1176 if (send_kbd_command_and_data(kbdc, KBDC_SET_SCANCODE_SET, 0) 1177 == KBD_ACK) 1178 codeset = read_kbd_data(kbdc); 1179 } 1180 if (bootverbose) 1181 printf("atkbd: scancode set %d\n", codeset); 1182 #endif /* KBD_DETECT_XT_KEYBOARD */ 1183 1184 *type = KB_OTHER; 1185 id = get_kbd_id(kbdc); 1186 switch(id) { 1187 case 0x41ab: /* 101/102/... Enhanced */ 1188 case 0x83ab: /* ditto */ 1189 case 0x54ab: /* SpaceSaver */ 1190 case 0x84ab: /* ditto */ 1191 #if 0 1192 case 0x90ab: /* 'G' */ 1193 case 0x91ab: /* 'P' */ 1194 case 0x92ab: /* 'A' */ 1195 #endif 1196 *type = KB_101; 1197 break; 1198 case -1: /* AT 84 keyboard doesn't return ID */ 1199 *type = KB_84; 1200 break; 1201 default: 1202 break; 1203 } 1204 if (bootverbose) 1205 printf("atkbd: keyboard ID 0x%x (%d)\n", id, *type); 1206 1207 /* reset keyboard hardware */ 1208 if (!(flags & KB_CONF_NO_RESET) && !reset_kbd(kbdc)) { 1209 /* 1210 * KEYBOARD ERROR 1211 * Keyboard reset may fail either because the keyboard 1212 * doen't exist, or because the keyboard doesn't pass 1213 * the self-test, or the keyboard controller on the 1214 * motherboard and the keyboard somehow fail to shake hands. 1215 * It is just possible, particularly in the last case, 1216 * that the keyoard controller may be left in a hung state. 1217 * test_controller() and test_kbd_port() appear to bring 1218 * the keyboard controller back (I don't know why and how, 1219 * though.) 1220 */ 1221 empty_both_buffers(kbdc, 10); 1222 test_controller(kbdc); 1223 test_kbd_port(kbdc); 1224 /* 1225 * We could disable the keyboard port and interrupt... but, 1226 * the keyboard may still exist (see above). 1227 */ 1228 set_controller_command_byte(kbdc, 0xff, c); 1229 kbdc_lock(kbdc, FALSE); 1230 if (bootverbose) 1231 printf("atkbd: failed to reset the keyboard.\n"); 1232 return EIO; 1233 } 1234 1235 /* 1236 * Allow us to set the XT_KEYBD flag in UserConfig so that keyboards 1237 * such as those on the IBM ThinkPad laptop computers can be used 1238 * with the standard console driver. 1239 */ 1240 if (codeset == 1) { 1241 if (send_kbd_command_and_data(kbdc, 1242 KBDC_SET_SCANCODE_SET, codeset) == KBD_ACK) { 1243 /* XT kbd doesn't need scan code translation */ 1244 c &= ~KBD_TRANSLATION; 1245 } else { 1246 /* 1247 * KEYBOARD ERROR 1248 * The XT kbd isn't usable unless the proper scan 1249 * code set is selected. 1250 */ 1251 set_controller_command_byte(kbdc, 0xff, c); 1252 kbdc_lock(kbdc, FALSE); 1253 printf("atkbd: unable to set the XT keyboard mode.\n"); 1254 return EIO; 1255 } 1256 } 1257 1258 #ifdef __alpha__ 1259 if (send_kbd_command_and_data( 1260 kbdc, KBDC_SET_SCANCODE_SET, 2) != KBD_ACK) { 1261 printf("atkbd: can't set translation.\n"); 1262 1263 } 1264 c |= KBD_TRANSLATION; 1265 #endif 1266 1267 /* enable the keyboard port and intr. */ 1268 if (!set_controller_command_byte(kbdc, 1269 KBD_KBD_CONTROL_BITS | KBD_TRANSLATION | KBD_OVERRIDE_KBD_LOCK, 1270 (c & (KBD_TRANSLATION | KBD_OVERRIDE_KBD_LOCK)) 1271 | KBD_ENABLE_KBD_PORT | KBD_ENABLE_KBD_INT)) { 1272 /* 1273 * CONTROLLER ERROR 1274 * This is serious; we are left with the disabled 1275 * keyboard intr. 1276 */ 1277 set_controller_command_byte(kbdc, 0xff, c); 1278 kbdc_lock(kbdc, FALSE); 1279 printf("atkbd: unable to enable the keyboard port and intr.\n"); 1280 return EIO; 1281 } 1282 1283 kbdc_lock(kbdc, FALSE); 1284 return 0; 1285 } 1286 1287 static int 1288 write_kbd(KBDC kbdc, int command, int data) 1289 { 1290 int s; 1291 1292 /* prevent the timeout routine from polling the keyboard */ 1293 if (!kbdc_lock(kbdc, TRUE)) 1294 return EBUSY; 1295 1296 /* disable the keyboard and mouse interrupt */ 1297 s = spltty(); 1298 #if 0 1299 c = get_controller_command_byte(kbdc); 1300 if ((c == -1) 1301 || !set_controller_command_byte(kbdc, 1302 kbdc_get_device_mask(kbdc), 1303 KBD_DISABLE_KBD_PORT | KBD_DISABLE_KBD_INT 1304 | KBD_DISABLE_AUX_PORT | KBD_DISABLE_AUX_INT)) { 1305 /* CONTROLLER ERROR */ 1306 kbdc_lock(kbdc, FALSE); 1307 splx(s); 1308 return EIO; 1309 } 1310 /* 1311 * Now that the keyboard controller is told not to generate 1312 * the keyboard and mouse interrupts, call `splx()' to allow 1313 * the other tty interrupts. The clock interrupt may also occur, 1314 * but the timeout routine (`scrn_timer()') will be blocked 1315 * by the lock flag set via `kbdc_lock()' 1316 */ 1317 splx(s); 1318 #endif 1319 1320 if (send_kbd_command_and_data(kbdc, command, data) != KBD_ACK) 1321 send_kbd_command(kbdc, KBDC_ENABLE_KBD); 1322 1323 #if 0 1324 /* restore the interrupts */ 1325 if (!set_controller_command_byte(kbdc, 1326 kbdc_get_device_mask(kbdc), 1327 c & (KBD_KBD_CONTROL_BITS | KBD_AUX_CONTROL_BITS))) { 1328 /* CONTROLLER ERROR */ 1329 } 1330 #else 1331 splx(s); 1332 #endif 1333 kbdc_lock(kbdc, FALSE); 1334 1335 return 0; 1336 } 1337 1338 static int 1339 get_kbd_id(KBDC kbdc) 1340 { 1341 int id1, id2; 1342 1343 empty_both_buffers(kbdc, 10); 1344 id1 = id2 = -1; 1345 if (send_kbd_command(kbdc, KBDC_SEND_DEV_ID) != KBD_ACK) 1346 return -1; 1347 1348 DELAY(10000); /* 10 msec delay */ 1349 id1 = read_kbd_data(kbdc); 1350 if (id1 != -1) 1351 id2 = read_kbd_data(kbdc); 1352 1353 if ((id1 == -1) || (id2 == -1)) { 1354 empty_both_buffers(kbdc, 10); 1355 test_controller(kbdc); 1356 test_kbd_port(kbdc); 1357 return -1; 1358 } 1359 return ((id2 << 8) | id1); 1360 } 1361 1362 static int delays[] = { 250, 500, 750, 1000 }; 1363 static int rates[] = { 34, 38, 42, 46, 50, 55, 59, 63, 1364 68, 76, 84, 92, 100, 110, 118, 126, 1365 136, 152, 168, 184, 200, 220, 236, 252, 1366 272, 304, 336, 368, 400, 440, 472, 504 }; 1367 1368 static int 1369 typematic_delay(int i) 1370 { 1371 return delays[(i >> 5) & 3]; 1372 } 1373 1374 static int 1375 typematic_rate(int i) 1376 { 1377 return rates[i & 0x1f]; 1378 } 1379 1380 static int 1381 typematic(int delay, int rate) 1382 { 1383 int value; 1384 int i; 1385 1386 for (i = sizeof(delays)/sizeof(delays[0]) - 1; i > 0; --i) { 1387 if (delay >= delays[i]) 1388 break; 1389 } 1390 value = i << 5; 1391 for (i = sizeof(rates)/sizeof(rates[0]) - 1; i > 0; --i) { 1392 if (rate >= rates[i]) 1393 break; 1394 } 1395 value |= i; 1396 return value; 1397 } 1398