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 1.6 2004/09/19 02:15:44 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 callout_reset(&kbd->kb_atkbd_timeout_ch, hz / 10, atkbd_timeout, arg); 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 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_WAITOK|M_ZERO); 361 state = malloc(sizeof(*state), M_DEVBUF, M_WAITOK|M_ZERO); 362 keymap = malloc(sizeof(key_map), M_DEVBUF, M_WAITOK); 363 accmap = malloc(sizeof(accent_map), M_DEVBUF, M_WAITOK); 364 fkeymap = malloc(sizeof(fkey_tab), M_DEVBUF, M_WAITOK); 365 fkeymap_size = sizeof(fkey_tab)/sizeof(fkey_tab[0]); 366 } else if (KBD_IS_INITIALIZED(*kbdp) && KBD_IS_CONFIGURED(*kbdp)) { 367 return 0; 368 } else { 369 kbd = *kbdp; 370 state = (atkbd_state_t *)kbd->kb_data; 371 bzero(state, sizeof(*state)); 372 keymap = kbd->kb_keymap; 373 accmap = kbd->kb_accentmap; 374 fkeymap = kbd->kb_fkeytab; 375 fkeymap_size = kbd->kb_fkeytab_size; 376 } 377 378 if (!KBD_IS_PROBED(kbd)) { 379 state->kbdc = atkbdc_open(data[0]); 380 if (state->kbdc == NULL) 381 return ENXIO; 382 kbd_init_struct(kbd, ATKBD_DRIVER_NAME, KB_OTHER, unit, flags, 383 KB_PRI_ATKBD, 0, 0); 384 bcopy(&key_map, keymap, sizeof(key_map)); 385 bcopy(&accent_map, accmap, sizeof(accent_map)); 386 bcopy(fkey_tab, fkeymap, 387 imin(fkeymap_size*sizeof(fkeymap[0]), sizeof(fkey_tab))); 388 kbd_set_maps(kbd, keymap, accmap, fkeymap, fkeymap_size); 389 kbd->kb_data = (void *)state; 390 391 if (probe_keyboard(state->kbdc, flags)) { /* shouldn't happen */ 392 if (flags & KB_CONF_FAIL_IF_NO_KBD) 393 return ENXIO; 394 } else { 395 KBD_FOUND_DEVICE(kbd); 396 } 397 atkbd_clear_state(kbd); 398 state->ks_mode = K_XLATE; 399 /* 400 * FIXME: set the initial value for lock keys in ks_state 401 * according to the BIOS data? 402 */ 403 KBD_PROBE_DONE(kbd); 404 } 405 if (!KBD_IS_INITIALIZED(kbd) && !(flags & KB_CONF_PROBE_ONLY)) { 406 kbd->kb_config = flags & ~KB_CONF_PROBE_ONLY; 407 if (KBD_HAS_DEVICE(kbd) 408 && init_keyboard(state->kbdc, &kbd->kb_type, kbd->kb_config) 409 && (kbd->kb_config & KB_CONF_FAIL_IF_NO_KBD)) 410 return ENXIO; 411 atkbd_ioctl(kbd, KDSETLED, (caddr_t)&state->ks_state); 412 get_typematic(kbd); 413 delay[0] = kbd->kb_delay1; 414 delay[1] = kbd->kb_delay2; 415 atkbd_ioctl(kbd, KDSETREPEAT, (caddr_t)delay); 416 KBD_INIT_DONE(kbd); 417 } 418 if (!KBD_IS_CONFIGURED(kbd)) { 419 if (kbd_register(kbd) < 0) 420 return ENXIO; 421 KBD_CONFIG_DONE(kbd); 422 } 423 424 return 0; 425 } 426 427 /* finish using this keyboard */ 428 static int 429 atkbd_term(keyboard_t *kbd) 430 { 431 kbd_unregister(kbd); 432 return 0; 433 } 434 435 /* keyboard interrupt routine */ 436 static int 437 atkbd_intr(keyboard_t *kbd, void *arg) 438 { 439 atkbd_state_t *state; 440 int delay[2]; 441 int c; 442 443 if (KBD_IS_ACTIVE(kbd) && KBD_IS_BUSY(kbd)) { 444 /* let the callback function to process the input */ 445 (*kbd->kb_callback.kc_func)(kbd, KBDIO_KEYINPUT, 446 kbd->kb_callback.kc_arg); 447 } else { 448 /* read and discard the input; no one is waiting for input */ 449 do { 450 c = atkbd_read_char(kbd, FALSE); 451 } while (c != NOKEY); 452 453 if (!KBD_HAS_DEVICE(kbd)) { 454 /* 455 * The keyboard was not detected before; 456 * it must have been reconnected! 457 */ 458 state = (atkbd_state_t *)kbd->kb_data; 459 init_keyboard(state->kbdc, &kbd->kb_type, 460 kbd->kb_config); 461 atkbd_ioctl(kbd, KDSETLED, (caddr_t)&state->ks_state); 462 get_typematic(kbd); 463 delay[0] = kbd->kb_delay1; 464 delay[1] = kbd->kb_delay2; 465 atkbd_ioctl(kbd, KDSETREPEAT, (caddr_t)delay); 466 KBD_FOUND_DEVICE(kbd); 467 } 468 } 469 return 0; 470 } 471 472 /* test the interface to the device */ 473 static int 474 atkbd_test_if(keyboard_t *kbd) 475 { 476 int error; 477 int s; 478 479 error = 0; 480 empty_both_buffers(((atkbd_state_t *)kbd->kb_data)->kbdc, 10); 481 s = spltty(); 482 if (!test_controller(((atkbd_state_t *)kbd->kb_data)->kbdc)) 483 error = EIO; 484 else if (test_kbd_port(((atkbd_state_t *)kbd->kb_data)->kbdc) != 0) 485 error = EIO; 486 splx(s); 487 488 return error; 489 } 490 491 /* 492 * Enable the access to the device; until this function is called, 493 * the client cannot read from the keyboard. 494 */ 495 static int 496 atkbd_enable(keyboard_t *kbd) 497 { 498 int s; 499 500 s = spltty(); 501 KBD_ACTIVATE(kbd); 502 splx(s); 503 return 0; 504 } 505 506 /* disallow the access to the device */ 507 static int 508 atkbd_disable(keyboard_t *kbd) 509 { 510 int s; 511 512 s = spltty(); 513 KBD_DEACTIVATE(kbd); 514 splx(s); 515 return 0; 516 } 517 518 /* read one byte from the keyboard if it's allowed */ 519 static int 520 atkbd_read(keyboard_t *kbd, int wait) 521 { 522 int c; 523 524 if (wait) 525 c = read_kbd_data(((atkbd_state_t *)kbd->kb_data)->kbdc); 526 else 527 c = read_kbd_data_no_wait(((atkbd_state_t *)kbd->kb_data)->kbdc); 528 if (c != -1) 529 ++kbd->kb_count; 530 return (KBD_IS_ACTIVE(kbd) ? c : -1); 531 } 532 533 /* check if data is waiting */ 534 static int 535 atkbd_check(keyboard_t *kbd) 536 { 537 if (!KBD_IS_ACTIVE(kbd)) 538 return FALSE; 539 return kbdc_data_ready(((atkbd_state_t *)kbd->kb_data)->kbdc); 540 } 541 542 /* read char from the keyboard */ 543 static u_int 544 atkbd_read_char(keyboard_t *kbd, int wait) 545 { 546 atkbd_state_t *state; 547 u_int action; 548 int scancode; 549 int keycode; 550 551 state = (atkbd_state_t *)kbd->kb_data; 552 next_code: 553 /* do we have a composed char to return? */ 554 if (!(state->ks_flags & COMPOSE) && (state->ks_composed_char > 0)) { 555 action = state->ks_composed_char; 556 state->ks_composed_char = 0; 557 if (action > UCHAR_MAX) 558 return ERRKEY; 559 return action; 560 } 561 562 /* see if there is something in the keyboard port */ 563 if (wait) { 564 do { 565 scancode = read_kbd_data(state->kbdc); 566 } while (scancode == -1); 567 } else { 568 scancode = read_kbd_data_no_wait(state->kbdc); 569 if (scancode == -1) 570 return NOKEY; 571 } 572 ++kbd->kb_count; 573 574 #if KBDIO_DEBUG >= 10 575 printf("atkbd_read_char(): scancode:0x%x\n", scancode); 576 #endif 577 578 /* return the byte as is for the K_RAW mode */ 579 if (state->ks_mode == K_RAW) 580 return scancode; 581 582 /* translate the scan code into a keycode */ 583 keycode = scancode & 0x7F; 584 switch (state->ks_prefix) { 585 case 0x00: /* normal scancode */ 586 switch(scancode) { 587 case 0xB8: /* left alt (compose key) released */ 588 if (state->ks_flags & COMPOSE) { 589 state->ks_flags &= ~COMPOSE; 590 if (state->ks_composed_char > UCHAR_MAX) 591 state->ks_composed_char = 0; 592 } 593 break; 594 case 0x38: /* left alt (compose key) pressed */ 595 if (!(state->ks_flags & COMPOSE)) { 596 state->ks_flags |= COMPOSE; 597 state->ks_composed_char = 0; 598 } 599 break; 600 case 0xE0: 601 case 0xE1: 602 state->ks_prefix = scancode; 603 goto next_code; 604 } 605 break; 606 case 0xE0: /* 0xE0 prefix */ 607 state->ks_prefix = 0; 608 switch (keycode) { 609 case 0x1C: /* right enter key */ 610 keycode = 0x59; 611 break; 612 case 0x1D: /* right ctrl key */ 613 keycode = 0x5A; 614 break; 615 case 0x35: /* keypad divide key */ 616 keycode = 0x5B; 617 break; 618 case 0x37: /* print scrn key */ 619 keycode = 0x5C; 620 break; 621 case 0x38: /* right alt key (alt gr) */ 622 keycode = 0x5D; 623 break; 624 case 0x46: /* ctrl-pause/break on AT 101 (see below) */ 625 keycode = 0x68; 626 break; 627 case 0x47: /* grey home key */ 628 keycode = 0x5E; 629 break; 630 case 0x48: /* grey up arrow key */ 631 keycode = 0x5F; 632 break; 633 case 0x49: /* grey page up key */ 634 keycode = 0x60; 635 break; 636 case 0x4B: /* grey left arrow key */ 637 keycode = 0x61; 638 break; 639 case 0x4D: /* grey right arrow key */ 640 keycode = 0x62; 641 break; 642 case 0x4F: /* grey end key */ 643 keycode = 0x63; 644 break; 645 case 0x50: /* grey down arrow key */ 646 keycode = 0x64; 647 break; 648 case 0x51: /* grey page down key */ 649 keycode = 0x65; 650 break; 651 case 0x52: /* grey insert key */ 652 keycode = 0x66; 653 break; 654 case 0x53: /* grey delete key */ 655 keycode = 0x67; 656 break; 657 /* the following 3 are only used on the MS "Natural" keyboard */ 658 case 0x5b: /* left Window key */ 659 keycode = 0x69; 660 break; 661 case 0x5c: /* right Window key */ 662 keycode = 0x6a; 663 break; 664 case 0x5d: /* menu key */ 665 keycode = 0x6b; 666 break; 667 default: /* ignore everything else */ 668 goto next_code; 669 } 670 break; 671 case 0xE1: /* 0xE1 prefix */ 672 /* 673 * The pause/break key on the 101 keyboard produces: 674 * E1-1D-45 E1-9D-C5 675 * Ctrl-pause/break produces: 676 * E0-46 E0-C6 (See above.) 677 */ 678 state->ks_prefix = 0; 679 if (keycode == 0x1D) 680 state->ks_prefix = 0x1D; 681 goto next_code; 682 /* NOT REACHED */ 683 case 0x1D: /* pause / break */ 684 state->ks_prefix = 0; 685 if (keycode != 0x45) 686 goto next_code; 687 keycode = 0x68; 688 break; 689 } 690 691 if (kbd->kb_type == KB_84) { 692 switch (keycode) { 693 case 0x37: /* *(numpad)/print screen */ 694 if (state->ks_flags & SHIFTS) 695 keycode = 0x5c; /* print screen */ 696 break; 697 case 0x45: /* num lock/pause */ 698 if (state->ks_flags & CTLS) 699 keycode = 0x68; /* pause */ 700 break; 701 case 0x46: /* scroll lock/break */ 702 if (state->ks_flags & CTLS) 703 keycode = 0x6c; /* break */ 704 break; 705 } 706 } else if (kbd->kb_type == KB_101) { 707 switch (keycode) { 708 case 0x5c: /* print screen */ 709 if (state->ks_flags & ALTS) 710 keycode = 0x54; /* sysrq */ 711 break; 712 case 0x68: /* pause/break */ 713 if (state->ks_flags & CTLS) 714 keycode = 0x6c; /* break */ 715 break; 716 } 717 } 718 719 /* return the key code in the K_CODE mode */ 720 if (state->ks_mode == K_CODE) 721 return (keycode | (scancode & 0x80)); 722 723 /* compose a character code */ 724 if (state->ks_flags & COMPOSE) { 725 switch (keycode | (scancode & 0x80)) { 726 /* key pressed, process it */ 727 case 0x47: case 0x48: case 0x49: /* keypad 7,8,9 */ 728 state->ks_composed_char *= 10; 729 state->ks_composed_char += keycode - 0x40; 730 if (state->ks_composed_char > UCHAR_MAX) 731 return ERRKEY; 732 goto next_code; 733 case 0x4B: case 0x4C: case 0x4D: /* keypad 4,5,6 */ 734 state->ks_composed_char *= 10; 735 state->ks_composed_char += keycode - 0x47; 736 if (state->ks_composed_char > UCHAR_MAX) 737 return ERRKEY; 738 goto next_code; 739 case 0x4F: case 0x50: case 0x51: /* keypad 1,2,3 */ 740 state->ks_composed_char *= 10; 741 state->ks_composed_char += keycode - 0x4E; 742 if (state->ks_composed_char > UCHAR_MAX) 743 return ERRKEY; 744 goto next_code; 745 case 0x52: /* keypad 0 */ 746 state->ks_composed_char *= 10; 747 if (state->ks_composed_char > UCHAR_MAX) 748 return ERRKEY; 749 goto next_code; 750 751 /* key released, no interest here */ 752 case 0xC7: case 0xC8: case 0xC9: /* keypad 7,8,9 */ 753 case 0xCB: case 0xCC: case 0xCD: /* keypad 4,5,6 */ 754 case 0xCF: case 0xD0: case 0xD1: /* keypad 1,2,3 */ 755 case 0xD2: /* keypad 0 */ 756 goto next_code; 757 758 case 0x38: /* left alt key */ 759 break; 760 761 default: 762 if (state->ks_composed_char > 0) { 763 state->ks_flags &= ~COMPOSE; 764 state->ks_composed_char = 0; 765 return ERRKEY; 766 } 767 break; 768 } 769 } 770 771 /* keycode to key action */ 772 action = genkbd_keyaction(kbd, keycode, scancode & 0x80, 773 &state->ks_state, &state->ks_accents); 774 if (action == NOKEY) 775 goto next_code; 776 else 777 return action; 778 } 779 780 /* check if char is waiting */ 781 static int 782 atkbd_check_char(keyboard_t *kbd) 783 { 784 atkbd_state_t *state; 785 786 if (!KBD_IS_ACTIVE(kbd)) 787 return FALSE; 788 state = (atkbd_state_t *)kbd->kb_data; 789 if (!(state->ks_flags & COMPOSE) && (state->ks_composed_char > 0)) 790 return TRUE; 791 return kbdc_data_ready(state->kbdc); 792 } 793 794 /* some useful control functions */ 795 static int 796 atkbd_ioctl(keyboard_t *kbd, u_long cmd, caddr_t arg) 797 { 798 /* trasnlate LED_XXX bits into the device specific bits */ 799 static u_char ledmap[8] = { 800 0, 4, 2, 6, 1, 5, 3, 7, 801 }; 802 atkbd_state_t *state = kbd->kb_data; 803 int error; 804 int s; 805 int i; 806 807 s = spltty(); 808 switch (cmd) { 809 810 case KDGKBMODE: /* get keyboard mode */ 811 *(int *)arg = state->ks_mode; 812 break; 813 case KDSKBMODE: /* set keyboard mode */ 814 switch (*(int *)arg) { 815 case K_XLATE: 816 if (state->ks_mode != K_XLATE) { 817 /* make lock key state and LED state match */ 818 state->ks_state &= ~LOCK_MASK; 819 state->ks_state |= KBD_LED_VAL(kbd); 820 } 821 /* FALL THROUGH */ 822 case K_RAW: 823 case K_CODE: 824 if (state->ks_mode != *(int *)arg) { 825 atkbd_clear_state(kbd); 826 state->ks_mode = *(int *)arg; 827 } 828 break; 829 default: 830 splx(s); 831 return EINVAL; 832 } 833 break; 834 835 case KDGETLED: /* get keyboard LED */ 836 *(int *)arg = KBD_LED_VAL(kbd); 837 break; 838 case KDSETLED: /* set keyboard LED */ 839 /* NOTE: lock key state in ks_state won't be changed */ 840 if (*(int *)arg & ~LOCK_MASK) { 841 splx(s); 842 return EINVAL; 843 } 844 i = *(int *)arg; 845 /* replace CAPS LED with ALTGR LED for ALTGR keyboards */ 846 if (state->ks_mode == K_XLATE && 847 kbd->kb_keymap->n_keys > ALTGR_OFFSET) { 848 if (i & ALKED) 849 i |= CLKED; 850 else 851 i &= ~CLKED; 852 } 853 if (KBD_HAS_DEVICE(kbd)) { 854 error = write_kbd(state->kbdc, KBDC_SET_LEDS, 855 ledmap[i & LED_MASK]); 856 if (error) { 857 splx(s); 858 return error; 859 } 860 } 861 KBD_LED_VAL(kbd) = *(int *)arg; 862 break; 863 864 case KDGKBSTATE: /* get lock key state */ 865 *(int *)arg = state->ks_state & LOCK_MASK; 866 break; 867 case KDSKBSTATE: /* set lock key state */ 868 if (*(int *)arg & ~LOCK_MASK) { 869 splx(s); 870 return EINVAL; 871 } 872 state->ks_state &= ~LOCK_MASK; 873 state->ks_state |= *(int *)arg; 874 splx(s); 875 /* set LEDs and quit */ 876 return atkbd_ioctl(kbd, KDSETLED, arg); 877 878 case KDSETREPEAT: /* set keyboard repeat rate (new interface) */ 879 splx(s); 880 if (!KBD_HAS_DEVICE(kbd)) 881 return 0; 882 i = typematic(((int *)arg)[0], ((int *)arg)[1]); 883 error = write_kbd(state->kbdc, KBDC_SET_TYPEMATIC, i); 884 if (error == 0) { 885 kbd->kb_delay1 = typematic_delay(i); 886 kbd->kb_delay2 = typematic_rate(i); 887 } 888 return error; 889 890 case KDSETRAD: /* set keyboard repeat rate (old interface) */ 891 splx(s); 892 if (!KBD_HAS_DEVICE(kbd)) 893 return 0; 894 error = write_kbd(state->kbdc, KBDC_SET_TYPEMATIC, *(int *)arg); 895 if (error == 0) { 896 kbd->kb_delay1 = typematic_delay(*(int *)arg); 897 kbd->kb_delay2 = typematic_rate(*(int *)arg); 898 } 899 return error; 900 901 case PIO_KEYMAP: /* set keyboard translation table */ 902 case PIO_KEYMAPENT: /* set keyboard translation table entry */ 903 case PIO_DEADKEYMAP: /* set accent key translation table */ 904 state->ks_accents = 0; 905 /* FALL THROUGH */ 906 default: 907 splx(s); 908 return genkbd_commonioctl(kbd, cmd, arg); 909 } 910 911 splx(s); 912 return 0; 913 } 914 915 /* lock the access to the keyboard */ 916 static int 917 atkbd_lock(keyboard_t *kbd, int lock) 918 { 919 return kbdc_lock(((atkbd_state_t *)kbd->kb_data)->kbdc, lock); 920 } 921 922 /* clear the internal state of the keyboard */ 923 static void 924 atkbd_clear_state(keyboard_t *kbd) 925 { 926 atkbd_state_t *state; 927 928 state = (atkbd_state_t *)kbd->kb_data; 929 state->ks_flags = 0; 930 state->ks_polling = 0; 931 state->ks_state &= LOCK_MASK; /* preserve locking key state */ 932 state->ks_accents = 0; 933 state->ks_composed_char = 0; 934 #if 0 935 state->ks_prefix = 0; /* XXX */ 936 #endif 937 } 938 939 /* save the internal state */ 940 static int 941 atkbd_get_state(keyboard_t *kbd, void *buf, size_t len) 942 { 943 if (len == 0) 944 return sizeof(atkbd_state_t); 945 if (len < sizeof(atkbd_state_t)) 946 return -1; 947 bcopy(kbd->kb_data, buf, sizeof(atkbd_state_t)); 948 return 0; 949 } 950 951 /* set the internal state */ 952 static int 953 atkbd_set_state(keyboard_t *kbd, void *buf, size_t len) 954 { 955 if (len < sizeof(atkbd_state_t)) 956 return ENOMEM; 957 if (((atkbd_state_t *)kbd->kb_data)->kbdc 958 != ((atkbd_state_t *)buf)->kbdc) 959 return ENOMEM; 960 bcopy(buf, kbd->kb_data, sizeof(atkbd_state_t)); 961 return 0; 962 } 963 964 static int 965 atkbd_poll(keyboard_t *kbd, int on) 966 { 967 atkbd_state_t *state; 968 int s; 969 970 state = (atkbd_state_t *)kbd->kb_data; 971 s = spltty(); 972 if (on) 973 ++state->ks_polling; 974 else 975 --state->ks_polling; 976 splx(s); 977 return 0; 978 } 979 980 /* local functions */ 981 982 static int 983 get_typematic(keyboard_t *kbd) 984 { 985 #ifdef __i386__ 986 /* 987 * Only some systems allow us to retrieve the keyboard repeat 988 * rate previously set via the BIOS... 989 */ 990 struct vm86frame vmf; 991 u_int32_t p; 992 993 bzero(&vmf, sizeof(vmf)); 994 vmf.vmf_ax = 0xc000; 995 vm86_intcall(0x15, &vmf); 996 if ((vmf.vmf_eflags & PSL_C) || vmf.vmf_ah) 997 return ENODEV; 998 p = BIOS_PADDRTOVADDR(((u_int32_t)vmf.vmf_es << 4) + vmf.vmf_bx); 999 if ((readb(p + 6) & 0x40) == 0) /* int 16, function 0x09 supported? */ 1000 return ENODEV; 1001 vmf.vmf_ax = 0x0900; 1002 vm86_intcall(0x16, &vmf); 1003 if ((vmf.vmf_al & 0x08) == 0) /* int 16, function 0x0306 supported? */ 1004 return ENODEV; 1005 vmf.vmf_ax = 0x0306; 1006 vm86_intcall(0x16, &vmf); 1007 kbd->kb_delay1 = typematic_delay(vmf.vmf_bh << 5); 1008 kbd->kb_delay2 = typematic_rate(vmf.vmf_bl); 1009 return 0; 1010 #else 1011 return ENODEV; 1012 #endif /* __i386__ */ 1013 } 1014 1015 static int 1016 setup_kbd_port(KBDC kbdc, int port, int intr) 1017 { 1018 if (!set_controller_command_byte(kbdc, 1019 KBD_KBD_CONTROL_BITS, 1020 ((port) ? KBD_ENABLE_KBD_PORT : KBD_DISABLE_KBD_PORT) 1021 | ((intr) ? KBD_ENABLE_KBD_INT : KBD_DISABLE_KBD_INT))) 1022 return 1; 1023 return 0; 1024 } 1025 1026 static int 1027 get_kbd_echo(KBDC kbdc) 1028 { 1029 /* enable the keyboard port, but disable the keyboard intr. */ 1030 if (setup_kbd_port(kbdc, TRUE, FALSE)) 1031 /* CONTROLLER ERROR: there is very little we can do... */ 1032 return ENXIO; 1033 1034 /* see if something is present */ 1035 write_kbd_command(kbdc, KBDC_ECHO); 1036 if (read_kbd_data(kbdc) != KBD_ECHO) { 1037 empty_both_buffers(kbdc, 10); 1038 test_controller(kbdc); 1039 test_kbd_port(kbdc); 1040 return ENXIO; 1041 } 1042 1043 /* enable the keyboard port and intr. */ 1044 if (setup_kbd_port(kbdc, TRUE, TRUE)) { 1045 /* 1046 * CONTROLLER ERROR 1047 * This is serious; the keyboard intr is left disabled! 1048 */ 1049 return ENXIO; 1050 } 1051 1052 return 0; 1053 } 1054 1055 static int 1056 probe_keyboard(KBDC kbdc, int flags) 1057 { 1058 /* 1059 * Don't try to print anything in this function. The low-level 1060 * console may not have been initialized yet... 1061 */ 1062 int err; 1063 int c; 1064 int m; 1065 1066 if (!kbdc_lock(kbdc, TRUE)) { 1067 /* driver error? */ 1068 return ENXIO; 1069 } 1070 1071 /* temporarily block data transmission from the keyboard */ 1072 write_controller_command(kbdc, KBDC_DISABLE_KBD_PORT); 1073 1074 /* flush any noise in the buffer */ 1075 empty_both_buffers(kbdc, 100); 1076 1077 /* save the current keyboard controller command byte */ 1078 m = kbdc_get_device_mask(kbdc) & ~KBD_KBD_CONTROL_BITS; 1079 c = get_controller_command_byte(kbdc); 1080 if (c == -1) { 1081 /* CONTROLLER ERROR */ 1082 kbdc_set_device_mask(kbdc, m); 1083 kbdc_lock(kbdc, FALSE); 1084 return ENXIO; 1085 } 1086 1087 /* 1088 * The keyboard may have been screwed up by the boot block. 1089 * We may just be able to recover from error by testing the controller 1090 * and the keyboard port. The controller command byte needs to be 1091 * saved before this recovery operation, as some controllers seem 1092 * to set the command byte to particular values. 1093 */ 1094 test_controller(kbdc); 1095 test_kbd_port(kbdc); 1096 1097 err = get_kbd_echo(kbdc); 1098 1099 /* 1100 * Even if the keyboard doesn't seem to be present (err != 0), 1101 * we shall enable the keyboard port and interrupt so that 1102 * the driver will be operable when the keyboard is attached 1103 * to the system later. It is NOT recommended to hot-plug 1104 * the AT keyboard, but many people do so... 1105 */ 1106 kbdc_set_device_mask(kbdc, m | KBD_KBD_CONTROL_BITS); 1107 setup_kbd_port(kbdc, TRUE, TRUE); 1108 #if 0 1109 if (err == 0) { 1110 kbdc_set_device_mask(kbdc, m | KBD_KBD_CONTROL_BITS); 1111 } else { 1112 /* try to restore the command byte as before */ 1113 set_controller_command_byte(kbdc, 0xff, c); 1114 kbdc_set_device_mask(kbdc, m); 1115 } 1116 #endif 1117 1118 kbdc_lock(kbdc, FALSE); 1119 return err; 1120 } 1121 1122 static int 1123 init_keyboard(KBDC kbdc, int *type, int flags) 1124 { 1125 int codeset; 1126 int id; 1127 int c; 1128 1129 if (!kbdc_lock(kbdc, TRUE)) { 1130 /* driver error? */ 1131 return EIO; 1132 } 1133 1134 /* temporarily block data transmission from the keyboard */ 1135 write_controller_command(kbdc, KBDC_DISABLE_KBD_PORT); 1136 1137 /* save the current controller command byte */ 1138 empty_both_buffers(kbdc, 200); 1139 c = get_controller_command_byte(kbdc); 1140 if (c == -1) { 1141 /* CONTROLLER ERROR */ 1142 kbdc_lock(kbdc, FALSE); 1143 printf("atkbd: unable to get the current command byte value.\n"); 1144 return EIO; 1145 } 1146 if (bootverbose) 1147 printf("atkbd: the current kbd controller command byte %04x\n", 1148 c); 1149 #if 0 1150 /* override the keyboard lock switch */ 1151 c |= KBD_OVERRIDE_KBD_LOCK; 1152 #endif 1153 1154 /* enable the keyboard port, but disable the keyboard intr. */ 1155 if (setup_kbd_port(kbdc, TRUE, FALSE)) { 1156 /* CONTROLLER ERROR: there is very little we can do... */ 1157 printf("atkbd: unable to set the command byte.\n"); 1158 kbdc_lock(kbdc, FALSE); 1159 return EIO; 1160 } 1161 1162 /* 1163 * Check if we have an XT keyboard before we attempt to reset it. 1164 * The procedure assumes that the keyboard and the controller have 1165 * been set up properly by BIOS and have not been messed up 1166 * during the boot process. 1167 */ 1168 codeset = -1; 1169 if (flags & KB_CONF_ALT_SCANCODESET) 1170 /* the user says there is a XT keyboard */ 1171 codeset = 1; 1172 #ifdef KBD_DETECT_XT_KEYBOARD 1173 else if ((c & KBD_TRANSLATION) == 0) { 1174 /* SET_SCANCODE_SET is not always supported; ignore error */ 1175 if (send_kbd_command_and_data(kbdc, KBDC_SET_SCANCODE_SET, 0) 1176 == KBD_ACK) 1177 codeset = read_kbd_data(kbdc); 1178 } 1179 if (bootverbose) 1180 printf("atkbd: scancode set %d\n", codeset); 1181 #endif /* KBD_DETECT_XT_KEYBOARD */ 1182 1183 *type = KB_OTHER; 1184 id = get_kbd_id(kbdc); 1185 switch(id) { 1186 case 0x41ab: /* 101/102/... Enhanced */ 1187 case 0x83ab: /* ditto */ 1188 case 0x54ab: /* SpaceSaver */ 1189 case 0x84ab: /* ditto */ 1190 #if 0 1191 case 0x90ab: /* 'G' */ 1192 case 0x91ab: /* 'P' */ 1193 case 0x92ab: /* 'A' */ 1194 #endif 1195 *type = KB_101; 1196 break; 1197 case -1: /* AT 84 keyboard doesn't return ID */ 1198 *type = KB_84; 1199 break; 1200 default: 1201 break; 1202 } 1203 if (bootverbose) 1204 printf("atkbd: keyboard ID 0x%x (%d)\n", id, *type); 1205 1206 /* reset keyboard hardware */ 1207 if (!(flags & KB_CONF_NO_RESET) && !reset_kbd(kbdc)) { 1208 /* 1209 * KEYBOARD ERROR 1210 * Keyboard reset may fail either because the keyboard 1211 * doen't exist, or because the keyboard doesn't pass 1212 * the self-test, or the keyboard controller on the 1213 * motherboard and the keyboard somehow fail to shake hands. 1214 * It is just possible, particularly in the last case, 1215 * that the keyoard controller may be left in a hung state. 1216 * test_controller() and test_kbd_port() appear to bring 1217 * the keyboard controller back (I don't know why and how, 1218 * though.) 1219 */ 1220 empty_both_buffers(kbdc, 10); 1221 test_controller(kbdc); 1222 test_kbd_port(kbdc); 1223 /* 1224 * We could disable the keyboard port and interrupt... but, 1225 * the keyboard may still exist (see above). 1226 */ 1227 set_controller_command_byte(kbdc, 0xff, c); 1228 kbdc_lock(kbdc, FALSE); 1229 if (bootverbose) 1230 printf("atkbd: failed to reset the keyboard.\n"); 1231 return EIO; 1232 } 1233 1234 /* 1235 * Allow us to set the XT_KEYBD flag in UserConfig so that keyboards 1236 * such as those on the IBM ThinkPad laptop computers can be used 1237 * with the standard console driver. 1238 */ 1239 if (codeset == 1) { 1240 if (send_kbd_command_and_data(kbdc, 1241 KBDC_SET_SCANCODE_SET, codeset) == KBD_ACK) { 1242 /* XT kbd doesn't need scan code translation */ 1243 c &= ~KBD_TRANSLATION; 1244 } else { 1245 /* 1246 * KEYBOARD ERROR 1247 * The XT kbd isn't usable unless the proper scan 1248 * code set is selected. 1249 */ 1250 set_controller_command_byte(kbdc, 0xff, c); 1251 kbdc_lock(kbdc, FALSE); 1252 printf("atkbd: unable to set the XT keyboard mode.\n"); 1253 return EIO; 1254 } 1255 } 1256 1257 #ifdef __alpha__ 1258 if (send_kbd_command_and_data( 1259 kbdc, KBDC_SET_SCANCODE_SET, 2) != KBD_ACK) { 1260 printf("atkbd: can't set translation.\n"); 1261 1262 } 1263 c |= KBD_TRANSLATION; 1264 #endif 1265 1266 /* enable the keyboard port and intr. */ 1267 if (!set_controller_command_byte(kbdc, 1268 KBD_KBD_CONTROL_BITS | KBD_TRANSLATION | KBD_OVERRIDE_KBD_LOCK, 1269 (c & (KBD_TRANSLATION | KBD_OVERRIDE_KBD_LOCK)) 1270 | KBD_ENABLE_KBD_PORT | KBD_ENABLE_KBD_INT)) { 1271 /* 1272 * CONTROLLER ERROR 1273 * This is serious; we are left with the disabled 1274 * keyboard intr. 1275 */ 1276 set_controller_command_byte(kbdc, 0xff, c); 1277 kbdc_lock(kbdc, FALSE); 1278 printf("atkbd: unable to enable the keyboard port and intr.\n"); 1279 return EIO; 1280 } 1281 1282 kbdc_lock(kbdc, FALSE); 1283 return 0; 1284 } 1285 1286 static int 1287 write_kbd(KBDC kbdc, int command, int data) 1288 { 1289 int s; 1290 1291 /* prevent the timeout routine from polling the keyboard */ 1292 if (!kbdc_lock(kbdc, TRUE)) 1293 return EBUSY; 1294 1295 /* disable the keyboard and mouse interrupt */ 1296 s = spltty(); 1297 #if 0 1298 c = get_controller_command_byte(kbdc); 1299 if ((c == -1) 1300 || !set_controller_command_byte(kbdc, 1301 kbdc_get_device_mask(kbdc), 1302 KBD_DISABLE_KBD_PORT | KBD_DISABLE_KBD_INT 1303 | KBD_DISABLE_AUX_PORT | KBD_DISABLE_AUX_INT)) { 1304 /* CONTROLLER ERROR */ 1305 kbdc_lock(kbdc, FALSE); 1306 splx(s); 1307 return EIO; 1308 } 1309 /* 1310 * Now that the keyboard controller is told not to generate 1311 * the keyboard and mouse interrupts, call `splx()' to allow 1312 * the other tty interrupts. The clock interrupt may also occur, 1313 * but the timeout routine (`scrn_timer()') will be blocked 1314 * by the lock flag set via `kbdc_lock()' 1315 */ 1316 splx(s); 1317 #endif 1318 1319 if (send_kbd_command_and_data(kbdc, command, data) != KBD_ACK) 1320 send_kbd_command(kbdc, KBDC_ENABLE_KBD); 1321 1322 #if 0 1323 /* restore the interrupts */ 1324 if (!set_controller_command_byte(kbdc, 1325 kbdc_get_device_mask(kbdc), 1326 c & (KBD_KBD_CONTROL_BITS | KBD_AUX_CONTROL_BITS))) { 1327 /* CONTROLLER ERROR */ 1328 } 1329 #else 1330 splx(s); 1331 #endif 1332 kbdc_lock(kbdc, FALSE); 1333 1334 return 0; 1335 } 1336 1337 static int 1338 get_kbd_id(KBDC kbdc) 1339 { 1340 int id1, id2; 1341 1342 empty_both_buffers(kbdc, 10); 1343 id1 = id2 = -1; 1344 if (send_kbd_command(kbdc, KBDC_SEND_DEV_ID) != KBD_ACK) 1345 return -1; 1346 1347 DELAY(10000); /* 10 msec delay */ 1348 id1 = read_kbd_data(kbdc); 1349 if (id1 != -1) 1350 id2 = read_kbd_data(kbdc); 1351 1352 if ((id1 == -1) || (id2 == -1)) { 1353 empty_both_buffers(kbdc, 10); 1354 test_controller(kbdc); 1355 test_kbd_port(kbdc); 1356 return -1; 1357 } 1358 return ((id2 << 8) | id1); 1359 } 1360 1361 static int delays[] = { 250, 500, 750, 1000 }; 1362 static int rates[] = { 34, 38, 42, 46, 50, 55, 59, 63, 1363 68, 76, 84, 92, 100, 110, 118, 126, 1364 136, 152, 168, 184, 200, 220, 236, 252, 1365 272, 304, 336, 368, 400, 440, 472, 504 }; 1366 1367 static int 1368 typematic_delay(int i) 1369 { 1370 return delays[(i >> 5) & 3]; 1371 } 1372 1373 static int 1374 typematic_rate(int i) 1375 { 1376 return rates[i & 0x1f]; 1377 } 1378 1379 static int 1380 typematic(int delay, int rate) 1381 { 1382 int value; 1383 int i; 1384 1385 for (i = sizeof(delays)/sizeof(delays[0]) - 1; i > 0; --i) { 1386 if (delay >= delays[i]) 1387 break; 1388 } 1389 value = i << 5; 1390 for (i = sizeof(rates)/sizeof(rates[0]) - 1; i > 0; --i) { 1391 if (rate >= rates[i]) 1392 break; 1393 } 1394 value |= i; 1395 return value; 1396 } 1397