Now available: The Design and Implementation of the FreeBSD Operating System (Second Edition)
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sys/dev/kbd/atkbd.c
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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 "atkbd.h" 30 #include "opt_kbd.h" 31 #include "opt_atkbd.h" 32 #include "opt_devfs.h" 33 #ifdef __i386__ 34 #include "opt_vm86.h" 35 #endif 36 37 #if NATKBD > 0 38 39 #include <sys/param.h> 40 #include <sys/systm.h> 41 #include <sys/kernel.h> 42 #include <sys/conf.h> 43 #include <sys/proc.h> 44 #include <sys/tty.h> 45 #include <sys/fcntl.h> 46 #include <sys/malloc.h> 47 48 #ifdef __i386__ 49 #ifdef VM86 50 #include <machine/md_var.h> 51 #include <machine/psl.h> 52 #include <machine/vm86.h> 53 #include <machine/pc/bios.h> 54 55 #include <vm/vm.h> 56 #include <vm/pmap.h> 57 #endif /* VM86 */ 58 #endif /* __i386__ */ 59 60 #include <dev/kbd/kbdreg.h> 61 #include <dev/kbd/atkbdreg.h> 62 #include <dev/kbd/atkbdcreg.h> 63 64 #ifndef __i386__ 65 66 #include <sys/bus.h> 67 #include <isa/isareg.h> 68 69 #else /* __i386__ */ 70 71 #include <i386/isa/isa.h> 72 #include <i386/isa/isa_device.h> 73 74 extern struct isa_driver atkbddriver; /* XXX: a kludge; see below */ 75 76 #endif /* __i386__ */ 77 78 static timeout_t atkbd_timeout; 79 80 int 81 atkbd_probe_unit(int unit, int port, int irq, int flags) 82 { 83 keyboard_switch_t *sw; 84 int args[2]; 85 int error; 86 87 sw = kbd_get_switch(ATKBD_DRIVER_NAME); 88 if (sw == NULL) 89 return ENXIO; 90 91 args[0] = port; 92 args[1] = irq; 93 error = (*sw->probe)(unit, args, flags); 94 if (error) 95 return error; 96 return 0; 97 } 98 99 int 100 atkbd_attach_unit(int unit, keyboard_t **kbd, int port, int irq, int flags) 101 { 102 keyboard_switch_t *sw; 103 int args[2]; 104 int error; 105 106 sw = kbd_get_switch(ATKBD_DRIVER_NAME); 107 if (sw == NULL) 108 return ENXIO; 109 110 /* reset, initialize and enable the device */ 111 args[0] = port; 112 args[1] = irq; 113 *kbd = NULL; 114 error = (*sw->probe)(unit, args, flags); 115 if (error) 116 return error; 117 error = (*sw->init)(unit, kbd, args, flags); 118 if (error) 119 return error; 120 (*sw->enable)(*kbd); 121 122 #ifdef KBD_INSTALL_CDEV 123 /* attach a virtual keyboard cdev */ 124 error = kbd_attach(*kbd); 125 if (error) 126 return error; 127 #endif 128 129 /* 130 * This is a kludge to compensate for lost keyboard interrupts. 131 * A similar code used to be in syscons. See below. XXX 132 */ 133 atkbd_timeout(*kbd); 134 135 if (bootverbose) 136 (*sw->diag)(*kbd, bootverbose); 137 return 0; 138 } 139 140 static void 141 atkbd_timeout(void *arg) 142 { 143 keyboard_t *kbd; 144 int s; 145 146 /* The following comments are extracted from syscons.c (1.287) */ 147 /* 148 * With release 2.1 of the Xaccel server, the keyboard is left 149 * hanging pretty often. Apparently an interrupt from the 150 * keyboard is lost, and I don't know why (yet). 151 * This ugly hack calls scintr if input is ready for the keyboard 152 * and conveniently hides the problem. XXX 153 */ 154 /* 155 * Try removing anything stuck in the keyboard controller; whether 156 * it's a keyboard scan code or mouse data. `scintr()' doesn't 157 * read the mouse data directly, but `kbdio' routines will, as a 158 * side effect. 159 */ 160 s = spltty(); 161 kbd = (keyboard_t *)arg; 162 if ((*kbdsw[kbd->kb_index]->lock)(kbd, TRUE)) { 163 /* 164 * We have seen the lock flag is not set. Let's reset 165 * the flag early, otherwise the LED update routine fails 166 * which may want the lock during the interrupt routine. 167 */ 168 (*kbdsw[kbd->kb_index]->lock)(kbd, FALSE); 169 if ((*kbdsw[kbd->kb_index]->check_char)(kbd)) 170 (*kbdsw[kbd->kb_index]->intr)(kbd, NULL); 171 } 172 splx(s); 173 timeout(atkbd_timeout, arg, hz/10); 174 } 175 176 /* cdev driver functions */ 177 178 179 /* LOW-LEVEL */ 180 181 #include <machine/limits.h> 182 #include <machine/console.h> 183 #include <machine/clock.h> 184 185 #define ATKBD_DEFAULT 0 186 187 typedef struct atkbd_state { 188 KBDC kbdc; /* keyboard controller */ 189 /* XXX: don't move this field; pcvt 190 * expects `kbdc' to be the first 191 * field in this structure. */ 192 int ks_mode; /* input mode (K_XLATE,K_RAW,K_CODE) */ 193 int ks_flags; /* flags */ 194 #define COMPOSE (1 << 0) 195 int ks_polling; 196 int ks_state; /* shift/lock key state */ 197 int ks_accents; /* accent key index (> 0) */ 198 u_int ks_composed_char; /* composed char code (> 0) */ 199 u_char ks_prefix; /* AT scan code prefix */ 200 } atkbd_state_t; 201 202 /* keyboard driver declaration */ 203 static int atkbd_configure(int flags); 204 static kbd_probe_t atkbd_probe; 205 static kbd_init_t atkbd_init; 206 static kbd_term_t atkbd_term; 207 static kbd_intr_t atkbd_intr; 208 static kbd_test_if_t atkbd_test_if; 209 static kbd_enable_t atkbd_enable; 210 static kbd_disable_t atkbd_disable; 211 static kbd_read_t atkbd_read; 212 static kbd_check_t atkbd_check; 213 static kbd_read_char_t atkbd_read_char; 214 static kbd_check_char_t atkbd_check_char; 215 static kbd_ioctl_t atkbd_ioctl; 216 static kbd_lock_t atkbd_lock; 217 static kbd_clear_state_t atkbd_clear_state; 218 static kbd_get_state_t atkbd_get_state; 219 static kbd_set_state_t atkbd_set_state; 220 static kbd_poll_mode_t atkbd_poll; 221 222 keyboard_switch_t atkbdsw = { 223 atkbd_probe, 224 atkbd_init, 225 atkbd_term, 226 atkbd_intr, 227 atkbd_test_if, 228 atkbd_enable, 229 atkbd_disable, 230 atkbd_read, 231 atkbd_check, 232 atkbd_read_char, 233 atkbd_check_char, 234 atkbd_ioctl, 235 atkbd_lock, 236 atkbd_clear_state, 237 atkbd_get_state, 238 atkbd_set_state, 239 genkbd_get_fkeystr, 240 atkbd_poll, 241 genkbd_diag, 242 }; 243 244 KEYBOARD_DRIVER(atkbd, atkbdsw, atkbd_configure); 245 246 /* local functions */ 247 static int get_typematic(keyboard_t *kbd); 248 static int setup_kbd_port(KBDC kbdc, int port, int intr); 249 static int get_kbd_echo(KBDC kbdc); 250 static int probe_keyboard(KBDC kbdc, int flags); 251 static int init_keyboard(KBDC kbdc, int *type, int flags); 252 static int write_kbd(KBDC kbdc, int command, int data); 253 static int get_kbd_id(KBDC kbdc); 254 static int typematic(int delay, int rate); 255 static int typematic_delay(int delay); 256 static int typematic_rate(int rate); 257 258 /* local variables */ 259 260 /* the initial key map, accent map and fkey strings */ 261 #ifdef ATKBD_DFLT_KEYMAP 262 #define KBD_DFLT_KEYMAP 263 #include "atkbdmap.h" 264 #endif 265 #include <dev/kbd/kbdtables.h> 266 267 /* structures for the default keyboard */ 268 static keyboard_t default_kbd; 269 static atkbd_state_t default_kbd_state; 270 static keymap_t default_keymap; 271 static accentmap_t default_accentmap; 272 static fkeytab_t default_fkeytab[NUM_FKEYS]; 273 274 /* 275 * The back door to the keyboard driver! 276 * This function is called by the console driver, via the kbdio module, 277 * to tickle keyboard drivers when the low-level console is being initialized. 278 * Almost nothing in the kernel has been initialied yet. Try to probe 279 * keyboards if possible. 280 * NOTE: because of the way the low-level conole is initialized, this routine 281 * may be called more than once!! 282 */ 283 static int 284 atkbd_configure(int flags) 285 { 286 keyboard_t *kbd; 287 int arg[2]; 288 #ifdef __i386__ 289 struct isa_device *dev; 290 int i; 291 292 /* probe the keyboard controller */ 293 atkbdc_configure(); 294 295 /* XXX: a kludge to obtain the device configuration flags */ 296 dev = find_isadev(isa_devtab_tty, &atkbddriver, 0); 297 if (dev != NULL) { 298 flags |= dev->id_flags; 299 /* if the driver is disabled, unregister the keyboard if any */ 300 if (!dev->id_enabled) { 301 i = kbd_find_keyboard(ATKBD_DRIVER_NAME, ATKBD_DEFAULT); 302 if (i >= 0) { 303 kbd = kbd_get_keyboard(i); 304 kbd_unregister(kbd); 305 kbd->kb_flags &= ~KB_REGISTERED; 306 } 307 return 0; 308 } 309 } 310 #else 311 /* probe the keyboard controller */ 312 atkbdc_configure(); 313 #endif 314 /* probe the default keyboard */ 315 arg[0] = -1; 316 arg[1] = -1; 317 kbd = NULL; 318 if (atkbd_probe(ATKBD_DEFAULT, arg, flags)) 319 return 0; 320 if (atkbd_init(ATKBD_DEFAULT, &kbd, arg, flags)) 321 return 0; 322 323 /* return the number of found keyboards */ 324 return 1; 325 } 326 327 /* low-level functions */ 328 329 /* detect a keyboard */ 330 static int 331 atkbd_probe(int unit, void *arg, int flags) 332 { 333 KBDC kbdc; 334 int *data = (int *)arg; 335 336 /* XXX */ 337 if (unit == ATKBD_DEFAULT) { 338 if (KBD_IS_PROBED(&default_kbd)) 339 return 0; 340 } 341 342 kbdc = kbdc_open(data[0]); 343 if (kbdc == NULL) 344 return ENXIO; 345 if (probe_keyboard(kbdc, flags)) { 346 if (flags & KB_CONF_FAIL_IF_NO_KBD) 347 return ENXIO; 348 } 349 return 0; 350 } 351 352 /* reset and initialize the device */ 353 static int 354 atkbd_init(int unit, keyboard_t **kbdp, void *arg, int flags) 355 { 356 keyboard_t *kbd; 357 atkbd_state_t *state; 358 keymap_t *keymap; 359 accentmap_t *accmap; 360 fkeytab_t *fkeymap; 361 int fkeymap_size; 362 int delay[2]; 363 int *data = (int *)arg; 364 365 /* XXX */ 366 if (unit == ATKBD_DEFAULT) { 367 *kbdp = kbd = &default_kbd; 368 if (KBD_IS_INITIALIZED(kbd) && KBD_IS_CONFIGURED(kbd)) 369 return 0; 370 state = &default_kbd_state; 371 keymap = &default_keymap; 372 accmap = &default_accentmap; 373 fkeymap = default_fkeytab; 374 fkeymap_size = 375 sizeof(default_fkeytab)/sizeof(default_fkeytab[0]); 376 } else if (*kbdp == NULL) { 377 *kbdp = kbd = malloc(sizeof(*kbd), M_DEVBUF, M_NOWAIT); 378 if (kbd == NULL) 379 return ENOMEM; 380 bzero(kbd, sizeof(*kbd)); 381 state = malloc(sizeof(*state), M_DEVBUF, M_NOWAIT); 382 keymap = malloc(sizeof(key_map), M_DEVBUF, M_NOWAIT); 383 accmap = malloc(sizeof(accent_map), M_DEVBUF, M_NOWAIT); 384 fkeymap = malloc(sizeof(fkey_tab), M_DEVBUF, M_NOWAIT); 385 fkeymap_size = sizeof(fkey_tab)/sizeof(fkey_tab[0]); 386 if ((state == NULL) || (keymap == NULL) || (accmap == NULL) 387 || (fkeymap == NULL)) { 388 if (state != NULL) 389 free(state, M_DEVBUF); 390 if (keymap != NULL) 391 free(keymap, M_DEVBUF); 392 if (accmap != NULL) 393 free(accmap, M_DEVBUF); 394 if (fkeymap != NULL) 395 free(fkeymap, M_DEVBUF); 396 free(kbd, M_DEVBUF); 397 return ENOMEM; 398 } 399 bzero(state, sizeof(*state)); 400 } else if (KBD_IS_INITIALIZED(*kbdp) && KBD_IS_CONFIGURED(*kbdp)) { 401 return 0; 402 } else { 403 kbd = *kbdp; 404 state = (atkbd_state_t *)kbd->kb_data; 405 bzero(state, sizeof(*state)); 406 keymap = kbd->kb_keymap; 407 accmap = kbd->kb_accentmap; 408 fkeymap = kbd->kb_fkeytab; 409 fkeymap_size = kbd->kb_fkeytab_size; 410 } 411 412 if (!KBD_IS_PROBED(kbd)) { 413 state->kbdc = kbdc_open(data[0]); 414 if (state->kbdc == NULL) 415 return ENXIO; 416 kbd_init_struct(kbd, ATKBD_DRIVER_NAME, KB_OTHER, unit, flags, 417 data[0], IO_KBDSIZE); 418 bcopy(&key_map, keymap, sizeof(key_map)); 419 bcopy(&accent_map, accmap, sizeof(accent_map)); 420 bcopy(fkey_tab, fkeymap, 421 imin(fkeymap_size*sizeof(fkeymap[0]), sizeof(fkey_tab))); 422 kbd_set_maps(kbd, keymap, accmap, fkeymap, fkeymap_size); 423 kbd->kb_data = (void *)state; 424 425 if (probe_keyboard(state->kbdc, flags)) { /* shouldn't happen */ 426 if (flags & KB_CONF_FAIL_IF_NO_KBD) 427 return ENXIO; 428 } else { 429 KBD_FOUND_DEVICE(kbd); 430 } 431 atkbd_clear_state(kbd); 432 state->ks_mode = K_XLATE; 433 /* 434 * FIXME: set the initial value for lock keys in ks_state 435 * according to the BIOS data? 436 */ 437 KBD_PROBE_DONE(kbd); 438 } 439 if (!KBD_IS_INITIALIZED(kbd) && !(flags & KB_CONF_PROBE_ONLY)) { 440 kbd->kb_config = flags & ~KB_CONF_PROBE_ONLY; 441 if (KBD_HAS_DEVICE(kbd) 442 && init_keyboard(state->kbdc, &kbd->kb_type, kbd->kb_config) 443 && (kbd->kb_config & KB_CONF_FAIL_IF_NO_KBD)) 444 return ENXIO; 445 atkbd_ioctl(kbd, KDSETLED, (caddr_t)&state->ks_state); 446 get_typematic(kbd); 447 delay[0] = kbd->kb_delay1; 448 delay[1] = kbd->kb_delay2; 449 atkbd_ioctl(kbd, KDSETREPEAT, (caddr_t)delay); 450 KBD_INIT_DONE(kbd); 451 } 452 if (!KBD_IS_CONFIGURED(kbd)) { 453 if (kbd_register(kbd) < 0) 454 return ENXIO; 455 KBD_CONFIG_DONE(kbd); 456 } 457 458 return 0; 459 } 460 461 /* finish using this keyboard */ 462 static int 463 atkbd_term(keyboard_t *kbd) 464 { 465 kbd_unregister(kbd); 466 return 0; 467 } 468 469 /* keyboard interrupt routine */ 470 static int 471 atkbd_intr(keyboard_t *kbd, void *arg) 472 { 473 atkbd_state_t *state; 474 int delay[2]; 475 int c; 476 477 if (KBD_IS_ACTIVE(kbd) && KBD_IS_BUSY(kbd)) { 478 /* let the callback function to process the input */ 479 (*kbd->kb_callback.kc_func)(kbd, KBDIO_KEYINPUT, 480 kbd->kb_callback.kc_arg); 481 } else { 482 /* read and discard the input; no one is waiting for input */ 483 do { 484 c = atkbd_read_char(kbd, FALSE); 485 } while (c != NOKEY); 486 487 if (!KBD_HAS_DEVICE(kbd)) { 488 /* 489 * The keyboard was not detected before; 490 * it must have been reconnected! 491 */ 492 state = (atkbd_state_t *)kbd->kb_data; 493 init_keyboard(state->kbdc, &kbd->kb_type, 494 kbd->kb_config); 495 atkbd_ioctl(kbd, KDSETLED, (caddr_t)&state->ks_state); 496 get_typematic(kbd); 497 delay[0] = kbd->kb_delay1; 498 delay[1] = kbd->kb_delay2; 499 atkbd_ioctl(kbd, KDSETREPEAT, (caddr_t)delay); 500 KBD_FOUND_DEVICE(kbd); 501 } 502 } 503 return 0; 504 } 505 506 /* test the interface to the device */ 507 static int 508 atkbd_test_if(keyboard_t *kbd) 509 { 510 int error; 511 int s; 512 513 error = 0; 514 empty_both_buffers(((atkbd_state_t *)kbd->kb_data)->kbdc, 10); 515 s = spltty(); 516 if (!test_controller(((atkbd_state_t *)kbd->kb_data)->kbdc)) 517 error = EIO; 518 else if (test_kbd_port(((atkbd_state_t *)kbd->kb_data)->kbdc) != 0) 519 error = EIO; 520 splx(s); 521 522 return error; 523 } 524 525 /* 526 * Enable the access to the device; until this function is called, 527 * the client cannot read from the keyboard. 528 */ 529 static int 530 atkbd_enable(keyboard_t *kbd) 531 { 532 int s; 533 534 s = spltty(); 535 KBD_ACTIVATE(kbd); 536 splx(s); 537 return 0; 538 } 539 540 /* disallow the access to the device */ 541 static int 542 atkbd_disable(keyboard_t *kbd) 543 { 544 int s; 545 546 s = spltty(); 547 KBD_DEACTIVATE(kbd); 548 splx(s); 549 return 0; 550 } 551 552 /* read one byte from the keyboard if it's allowed */ 553 static int 554 atkbd_read(keyboard_t *kbd, int wait) 555 { 556 int c; 557 558 if (wait) 559 c = read_kbd_data(((atkbd_state_t *)kbd->kb_data)->kbdc); 560 else 561 c = read_kbd_data_no_wait(((atkbd_state_t *)kbd->kb_data)->kbdc); 562 return (KBD_IS_ACTIVE(kbd) ? c : -1); 563 } 564 565 /* check if data is waiting */ 566 static int 567 atkbd_check(keyboard_t *kbd) 568 { 569 if (!KBD_IS_ACTIVE(kbd)) 570 return FALSE; 571 return kbdc_data_ready(((atkbd_state_t *)kbd->kb_data)->kbdc); 572 } 573 574 /* read char from the keyboard */ 575 static u_int 576 atkbd_read_char(keyboard_t *kbd, int wait) 577 { 578 atkbd_state_t *state; 579 u_int action; 580 int scancode; 581 int keycode; 582 583 state = (atkbd_state_t *)kbd->kb_data; 584 next_code: 585 /* do we have a composed char to return? */ 586 if (!(state->ks_flags & COMPOSE) && (state->ks_composed_char > 0)) { 587 action = state->ks_composed_char; 588 state->ks_composed_char = 0; 589 if (action > UCHAR_MAX) 590 return ERRKEY; 591 return action; 592 } 593 594 /* see if there is something in the keyboard port */ 595 if (wait) { 596 do { 597 scancode = read_kbd_data(state->kbdc); 598 } while (scancode == -1); 599 } else { 600 scancode = read_kbd_data_no_wait(state->kbdc); 601 if (scancode == -1) 602 return NOKEY; 603 } 604 605 /* return the byte as is for the K_RAW mode */ 606 if (state->ks_mode == K_RAW) 607 return scancode; 608 609 /* translate the scan code into a keycode */ 610 keycode = scancode & 0x7F; 611 switch (state->ks_prefix) { 612 case 0x00: /* normal scancode */ 613 switch(scancode) { 614 case 0xB8: /* left alt (compose key) released */ 615 if (state->ks_flags & COMPOSE) { 616 state->ks_flags &= ~COMPOSE; 617 if (state->ks_composed_char > UCHAR_MAX) 618 state->ks_composed_char = 0; 619 } 620 break; 621 case 0x38: /* left alt (compose key) pressed */ 622 if (!(state->ks_flags & COMPOSE)) { 623 state->ks_flags |= COMPOSE; 624 state->ks_composed_char = 0; 625 } 626 break; 627 case 0xE0: 628 case 0xE1: 629 state->ks_prefix = scancode; 630 goto next_code; 631 } 632 break; 633 case 0xE0: /* 0xE0 prefix */ 634 state->ks_prefix = 0; 635 switch (keycode) { 636 case 0x1C: /* right enter key */ 637 keycode = 0x59; 638 break; 639 case 0x1D: /* right ctrl key */ 640 keycode = 0x5A; 641 break; 642 case 0x35: /* keypad divide key */ 643 keycode = 0x5B; 644 break; 645 case 0x37: /* print scrn key */ 646 keycode = 0x5C; 647 break; 648 case 0x38: /* right alt key (alt gr) */ 649 keycode = 0x5D; 650 break; 651 case 0x46: /* ctrl-pause/break on AT 101 (see below) */ 652 keycode = 0x68; 653 break; 654 case 0x47: /* grey home key */ 655 keycode = 0x5E; 656 break; 657 case 0x48: /* grey up arrow key */ 658 keycode = 0x5F; 659 break; 660 case 0x49: /* grey page up key */ 661 keycode = 0x60; 662 break; 663 case 0x4B: /* grey left arrow key */ 664 keycode = 0x61; 665 break; 666 case 0x4D: /* grey right arrow key */ 667 keycode = 0x62; 668 break; 669 case 0x4F: /* grey end key */ 670 keycode = 0x63; 671 break; 672 case 0x50: /* grey down arrow key */ 673 keycode = 0x64; 674 break; 675 case 0x51: /* grey page down key */ 676 keycode = 0x65; 677 break; 678 case 0x52: /* grey insert key */ 679 keycode = 0x66; 680 break; 681 case 0x53: /* grey delete key */ 682 keycode = 0x67; 683 break; 684 /* the following 3 are only used on the MS "Natural" keyboard */ 685 case 0x5b: /* left Window key */ 686 keycode = 0x69; 687 break; 688 case 0x5c: /* right Window key */ 689 keycode = 0x6a; 690 break; 691 case 0x5d: /* menu key */ 692 keycode = 0x6b; 693 break; 694 default: /* ignore everything else */ 695 goto next_code; 696 } 697 break; 698 case 0xE1: /* 0xE1 prefix */ 699 /* 700 * The pause/break key on the 101 keyboard produces: 701 * E1-1D-45 E1-9D-C5 702 * Ctrl-pause/break produces: 703 * E0-46 E0-C6 (See above.) 704 */ 705 state->ks_prefix = 0; 706 if (keycode == 0x1D) 707 state->ks_prefix = 0x1D; 708 goto next_code; 709 /* NOT REACHED */ 710 case 0x1D: /* pause / break */ 711 state->ks_prefix = 0; 712 if (keycode != 0x45) 713 goto next_code; 714 keycode = 0x68; 715 break; 716 } 717 718 if (kbd->kb_type == KB_84) { 719 switch (keycode) { 720 case 0x37: /* *(numpad)/print screen */ 721 if (state->ks_flags & SHIFTS) 722 keycode = 0x5c; /* print screen */ 723 break; 724 case 0x45: /* num lock/pause */ 725 if (state->ks_flags & CTLS) 726 keycode = 0x68; /* pause */ 727 break; 728 case 0x46: /* scroll lock/break */ 729 if (state->ks_flags & CTLS) 730 keycode = 0x6c; /* break */ 731 break; 732 } 733 } else if (kbd->kb_type == KB_101) { 734 switch (keycode) { 735 case 0x5c: /* print screen */ 736 if (state->ks_flags & ALTS) 737 keycode = 0x54; /* sysrq */ 738 break; 739 case 0x68: /* pause/break */ 740 if (state->ks_flags & CTLS) 741 keycode = 0x6c; /* break */ 742 break; 743 } 744 } 745 746 /* return the key code in the K_CODE mode */ 747 if (state->ks_mode == K_CODE) 748 return (keycode | (scancode & 0x80)); 749 750 /* compose a character code */ 751 if (state->ks_flags & COMPOSE) { 752 switch (keycode | (scancode & 0x80)) { 753 /* key pressed, process it */ 754 case 0x47: case 0x48: case 0x49: /* keypad 7,8,9 */ 755 state->ks_composed_char *= 10; 756 state->ks_composed_char += keycode - 0x40; 757 if (state->ks_composed_char > UCHAR_MAX) 758 return ERRKEY; 759 goto next_code; 760 case 0x4B: case 0x4C: case 0x4D: /* keypad 4,5,6 */ 761 state->ks_composed_char *= 10; 762 state->ks_composed_char += keycode - 0x47; 763 if (state->ks_composed_char > UCHAR_MAX) 764 return ERRKEY; 765 goto next_code; 766 case 0x4F: case 0x50: case 0x51: /* keypad 1,2,3 */ 767 state->ks_composed_char *= 10; 768 state->ks_composed_char += keycode - 0x4E; 769 if (state->ks_composed_char > UCHAR_MAX) 770 return ERRKEY; 771 goto next_code; 772 case 0x52: /* keypad 0 */ 773 state->ks_composed_char *= 10; 774 if (state->ks_composed_char > UCHAR_MAX) 775 return ERRKEY; 776 goto next_code; 777 778 /* key released, no interest here */ 779 case 0xC7: case 0xC8: case 0xC9: /* keypad 7,8,9 */ 780 case 0xCB: case 0xCC: case 0xCD: /* keypad 4,5,6 */ 781 case 0xCF: case 0xD0: case 0xD1: /* keypad 1,2,3 */ 782 case 0xD2: /* keypad 0 */ 783 goto next_code; 784 785 case 0x38: /* left alt key */ 786 break; 787 788 default: 789 if (state->ks_composed_char > 0) { 790 state->ks_flags &= ~COMPOSE; 791 state->ks_composed_char = 0; 792 return ERRKEY; 793 } 794 break; 795 } 796 } 797 798 /* keycode to key action */ 799 action = genkbd_keyaction(kbd, keycode, scancode & 0x80, 800 &state->ks_state, &state->ks_accents); 801 if (action == NOKEY) 802 goto next_code; 803 else 804 return action; 805 } 806 807 /* check if char is waiting */ 808 static int 809 atkbd_check_char(keyboard_t *kbd) 810 { 811 atkbd_state_t *state; 812 813 if (!KBD_IS_ACTIVE(kbd)) 814 return FALSE; 815 state = (atkbd_state_t *)kbd->kb_data; 816 if (!(state->ks_flags & COMPOSE) && (state->ks_composed_char > 0)) 817 return TRUE; 818 return kbdc_data_ready(state->kbdc); 819 } 820 821 /* some useful control functions */ 822 static int 823 atkbd_ioctl(keyboard_t *kbd, u_long cmd, caddr_t arg) 824 { 825 /* trasnlate LED_XXX bits into the device specific bits */ 826 static u_char ledmap[8] = { 827 0, 4, 2, 6, 1, 5, 3, 7, 828 }; 829 atkbd_state_t *state = kbd->kb_data; 830 int error; 831 int s; 832 int i; 833 834 s = spltty(); 835 switch (cmd) { 836 837 case KDGKBMODE: /* get keyboard mode */ 838 *(int *)arg = state->ks_mode; 839 break; 840 case KDSKBMODE: /* set keyboard mode */ 841 switch (*(int *)arg) { 842 case K_XLATE: 843 if (state->ks_mode != K_XLATE) { 844 /* make lock key state and LED state match */ 845 state->ks_state &= ~LOCK_MASK; 846 state->ks_state |= KBD_LED_VAL(kbd); 847 } 848 /* FALL THROUGH */ 849 case K_RAW: 850 case K_CODE: 851 if (state->ks_mode != *(int *)arg) { 852 atkbd_clear_state(kbd); 853 state->ks_mode = *(int *)arg; 854 } 855 break; 856 default: 857 splx(s); 858 return EINVAL; 859 } 860 break; 861 862 case KDGETLED: /* get keyboard LED */ 863 *(int *)arg = KBD_LED_VAL(kbd); 864 break; 865 case KDSETLED: /* set keyboard LED */ 866 /* NOTE: lock key state in ks_state won't be changed */ 867 if (*(int *)arg & ~LOCK_MASK) { 868 splx(s); 869 return EINVAL; 870 } 871 i = *(int *)arg; 872 /* replace CAPS LED with ALTGR LED for ALTGR keyboards */ 873 if (kbd->kb_keymap->n_keys > ALTGR_OFFSET) { 874 if (i & ALKED) 875 i |= CLKED; 876 else 877 i &= ~CLKED; 878 } 879 if (KBD_HAS_DEVICE(kbd)) { 880 error = write_kbd(state->kbdc, KBDC_SET_LEDS, 881 ledmap[i & LED_MASK]); 882 if (error) { 883 splx(s); 884 return error; 885 } 886 } 887 KBD_LED_VAL(kbd) = *(int *)arg; 888 break; 889 890 case KDGKBSTATE: /* get lock key state */ 891 *(int *)arg = state->ks_state & LOCK_MASK; 892 break; 893 case KDSKBSTATE: /* set lock key state */ 894 if (*(int *)arg & ~LOCK_MASK) { 895 splx(s); 896 return EINVAL; 897 } 898 state->ks_state &= ~LOCK_MASK; 899 state->ks_state |= *(int *)arg; 900 splx(s); 901 /* set LEDs and quit */ 902 return atkbd_ioctl(kbd, KDSETLED, arg); 903 904 case KDSETREPEAT: /* set keyboard repeat rate (new interface) */ 905 splx(s); 906 if (!KBD_HAS_DEVICE(kbd)) 907 return 0; 908 i = typematic(((int *)arg)[0], ((int *)arg)[1]); 909 error = write_kbd(state->kbdc, KBDC_SET_TYPEMATIC, i); 910 if (error == 0) { 911 kbd->kb_delay1 = typematic_delay(i); 912 kbd->kb_delay2 = typematic_rate(i); 913 } 914 return error; 915 916 case KDSETRAD: /* set keyboard repeat rate (old interface) */ 917 splx(s); 918 if (!KBD_HAS_DEVICE(kbd)) 919 return 0; 920 error = write_kbd(state->kbdc, KBDC_SET_TYPEMATIC, *(int *)arg); 921 if (error == 0) { 922 kbd->kb_delay1 = typematic_delay(*(int *)arg); 923 kbd->kb_delay2 = typematic_rate(*(int *)arg); 924 } 925 return error; 926 927 case PIO_KEYMAP: /* set keyboard translation table */ 928 case PIO_KEYMAPENT: /* set keyboard translation table entry */ 929 case PIO_DEADKEYMAP: /* set accent key translation table */ 930 state->ks_accents = 0; 931 /* FALL THROUGH */ 932 default: 933 splx(s); 934 return genkbd_commonioctl(kbd, cmd, arg); 935 } 936 937 splx(s); 938 return 0; 939 } 940 941 /* lock the access to the keyboard */ 942 static int 943 atkbd_lock(keyboard_t *kbd, int lock) 944 { 945 return kbdc_lock(((atkbd_state_t *)kbd->kb_data)->kbdc, lock); 946 } 947 948 /* clear the internal state of the keyboard */ 949 static void 950 atkbd_clear_state(keyboard_t *kbd) 951 { 952 atkbd_state_t *state; 953 954 state = (atkbd_state_t *)kbd->kb_data; 955 state->ks_flags = 0; 956 state->ks_polling = 0; 957 state->ks_state &= LOCK_MASK; /* preserve locking key state */ 958 state->ks_accents = 0; 959 state->ks_composed_char = 0; 960 #if 0 961 state->ks_prefix = 0; /* XXX */ 962 #endif 963 } 964 965 /* save the internal state */ 966 static int 967 atkbd_get_state(keyboard_t *kbd, void *buf, size_t len) 968 { 969 if (len == 0) 970 return sizeof(atkbd_state_t); 971 if (len < sizeof(atkbd_state_t)) 972 return -1; 973 bcopy(kbd->kb_data, buf, sizeof(atkbd_state_t)); 974 return 0; 975 } 976 977 /* set the internal state */ 978 static int 979 atkbd_set_state(keyboard_t *kbd, void *buf, size_t len) 980 { 981 if (len < sizeof(atkbd_state_t)) 982 return ENOMEM; 983 if (((atkbd_state_t *)kbd->kb_data)->kbdc 984 != ((atkbd_state_t *)buf)->kbdc) 985 return ENOMEM; 986 bcopy(buf, kbd->kb_data, sizeof(atkbd_state_t)); 987 return 0; 988 } 989 990 static int 991 atkbd_poll(keyboard_t *kbd, int on) 992 { 993 atkbd_state_t *state; 994 int s; 995 996 state = (atkbd_state_t *)kbd->kb_data; 997 s = spltty(); 998 if (on) 999 ++state->ks_polling; 1000 else 1001 --state->ks_polling; 1002 splx(s); 1003 return 0; 1004 } 1005 1006 /* local functions */ 1007 1008 static int 1009 get_typematic(keyboard_t *kbd) 1010 { 1011 #ifdef __i386__ 1012 #ifdef VM86 1013 /* 1014 * Only some systems allow us to retrieve the keyboard repeat 1015 * rate previously set via the BIOS... 1016 */ 1017 struct vm86frame vmf; 1018 u_int32_t p; 1019 1020 bzero(&vmf, sizeof(vmf)); 1021 vmf.vmf_ax = 0xc000; 1022 vm86_intcall(0x15, &vmf); 1023 if ((vmf.vmf_eflags & PSL_C) || vmf.vmf_ah) 1024 return ENODEV; 1025 p = BIOS_PADDRTOVADDR(((u_int32_t)vmf.vmf_es << 4) + vmf.vmf_bx); 1026 if ((readb(p + 6) & 0x40) == 0) /* int 16, function 0x09 supported? */ 1027 return ENODEV; 1028 vmf.vmf_ax = 0x0900; 1029 vm86_intcall(0x16, &vmf); 1030 if ((vmf.vmf_al & 0x08) == 0) /* int 16, function 0x0306 supported? */ 1031 return ENODEV; 1032 vmf.vmf_ax = 0x0306; 1033 vm86_intcall(0x16, &vmf); 1034 kbd->kb_delay1 = typematic_delay(vmf.vmf_bh << 5); 1035 kbd->kb_delay2 = typematic_rate(vmf.vmf_bl); 1036 return 0; 1037 #else 1038 return ENODEV; 1039 #endif /* VM86 */ 1040 #else 1041 return ENODEV; 1042 #endif /* __i386__ */ 1043 } 1044 1045 static int 1046 setup_kbd_port(KBDC kbdc, int port, int intr) 1047 { 1048 if (!set_controller_command_byte(kbdc, 1049 KBD_KBD_CONTROL_BITS, 1050 ((port) ? KBD_ENABLE_KBD_PORT : KBD_DISABLE_KBD_PORT) 1051 | ((intr) ? KBD_ENABLE_KBD_INT : KBD_DISABLE_KBD_INT))) 1052 return 1; 1053 return 0; 1054 } 1055 1056 static int 1057 get_kbd_echo(KBDC kbdc) 1058 { 1059 /* enable the keyboard port, but disable the keyboard intr. */ 1060 if (setup_kbd_port(kbdc, TRUE, FALSE)) 1061 /* CONTROLLER ERROR: there is very little we can do... */ 1062 return ENXIO; 1063 1064 /* see if something is present */ 1065 write_kbd_command(kbdc, KBDC_ECHO); 1066 if (read_kbd_data(kbdc) != KBD_ECHO) { 1067 empty_both_buffers(kbdc, 10); 1068 test_controller(kbdc); 1069 test_kbd_port(kbdc); 1070 return ENXIO; 1071 } 1072 1073 /* enable the keyboard port and intr. */ 1074 if (setup_kbd_port(kbdc, TRUE, TRUE)) { 1075 /* 1076 * CONTROLLER ERROR 1077 * This is serious; the keyboard intr is left disabled! 1078 */ 1079 return ENXIO; 1080 } 1081 1082 return 0; 1083 } 1084 1085 static int 1086 probe_keyboard(KBDC kbdc, int flags) 1087 { 1088 /* 1089 * Don't try to print anything in this function. The low-level 1090 * console may not have been initialized yet... 1091 */ 1092 int err; 1093 int c; 1094 int m; 1095 1096 if (!kbdc_lock(kbdc, TRUE)) { 1097 /* driver error? */ 1098 return ENXIO; 1099 } 1100 1101 /* flush any noise in the buffer */ 1102 empty_both_buffers(kbdc, 10); 1103 1104 /* save the current keyboard controller command byte */ 1105 m = kbdc_get_device_mask(kbdc) & ~KBD_KBD_CONTROL_BITS; 1106 c = get_controller_command_byte(kbdc); 1107 if (c == -1) { 1108 /* CONTROLLER ERROR */ 1109 kbdc_set_device_mask(kbdc, m); 1110 kbdc_lock(kbdc, FALSE); 1111 return ENXIO; 1112 } 1113 1114 /* 1115 * The keyboard may have been screwed up by the boot block. 1116 * We may just be able to recover from error by testing the controller 1117 * and the keyboard port. The controller command byte needs to be 1118 * saved before this recovery operation, as some controllers seem 1119 * to set the command byte to particular values. 1120 */ 1121 test_controller(kbdc); 1122 test_kbd_port(kbdc); 1123 1124 err = get_kbd_echo(kbdc); 1125 if (err == 0) { 1126 kbdc_set_device_mask(kbdc, m | KBD_KBD_CONTROL_BITS); 1127 } else { 1128 if (c != -1) 1129 /* try to restore the command byte as before */ 1130 set_controller_command_byte(kbdc, 0xff, c); 1131 kbdc_set_device_mask(kbdc, m); 1132 } 1133 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 /* save the current controller command byte */ 1151 empty_both_buffers(kbdc, 10); 1152 c = get_controller_command_byte(kbdc); 1153 if (c == -1) { 1154 /* CONTROLLER ERROR */ 1155 kbdc_lock(kbdc, FALSE); 1156 printf("atkbd: unable to get the current command byte value.\n"); 1157 return EIO; 1158 } 1159 if (bootverbose) 1160 printf("atkbd: the current kbd controller command byte %04x\n", 1161 c); 1162 #if 0 1163 /* override the keyboard lock switch */ 1164 c |= KBD_OVERRIDE_KBD_LOCK; 1165 #endif 1166 1167 /* enable the keyboard port, but disable the keyboard intr. */ 1168 if (setup_kbd_port(kbdc, TRUE, FALSE)) { 1169 /* CONTROLLER ERROR: there is very little we can do... */ 1170 printf("atkbd: unable to set the command byte.\n"); 1171 kbdc_lock(kbdc, FALSE); 1172 return EIO; 1173 } 1174 1175 /* 1176 * Check if we have an XT keyboard before we attempt to reset it. 1177 * The procedure assumes that the keyboard and the controller have 1178 * been set up properly by BIOS and have not been messed up 1179 * during the boot process. 1180 */ 1181 codeset = -1; 1182 if (flags & KB_CONF_ALT_SCANCODESET) 1183 /* the user says there is a XT keyboard */ 1184 codeset = 1; 1185 #ifdef KBD_DETECT_XT_KEYBOARD 1186 else if ((c & KBD_TRANSLATION) == 0) { 1187 /* SET_SCANCODE_SET is not always supported; ignore error */ 1188 if (send_kbd_command_and_data(kbdc, KBDC_SET_SCANCODE_SET, 0) 1189 == KBD_ACK) 1190 codeset = read_kbd_data(kbdc); 1191 } 1192 if (bootverbose) 1193 printf("atkbd: scancode set %d\n", codeset); 1194 #endif /* KBD_DETECT_XT_KEYBOARD */ 1195 1196 *type = KB_OTHER; 1197 id = get_kbd_id(kbdc); 1198 switch(id) { 1199 case 0x41ab: 1200 case 0x83ab: 1201 *type = KB_101; 1202 break; 1203 case -1: /* AT 84 keyboard doesn't return ID */ 1204 *type = KB_84; 1205 break; 1206 default: 1207 break; 1208 } 1209 if (bootverbose) 1210 printf("atkbd: keyboard ID 0x%x (%d)\n", id, *type); 1211 1212 /* reset keyboard hardware */ 1213 if (!(flags & KB_CONF_NO_RESET) && !reset_kbd(kbdc)) { 1214 /* 1215 * KEYBOARD ERROR 1216 * Keyboard reset may fail either because the keyboard 1217 * doen't exist, or because the keyboard doesn't pass 1218 * the self-test, or the keyboard controller on the 1219 * motherboard and the keyboard somehow fail to shake hands. 1220 * It is just possible, particularly in the last case, 1221 * that the keyoard controller may be left in a hung state. 1222 * test_controller() and test_kbd_port() appear to bring 1223 * the keyboard controller back (I don't know why and how, 1224 * though.) 1225 */ 1226 empty_both_buffers(kbdc, 10); 1227 test_controller(kbdc); 1228 test_kbd_port(kbdc); 1229 /* 1230 * We could disable the keyboard port and interrupt... but, 1231 * the keyboard may still exist (see above). 1232 */ 1233 set_controller_command_byte(kbdc, 0xff, c); 1234 kbdc_lock(kbdc, FALSE); 1235 if (bootverbose) 1236 printf("atkbd: failed to reset the keyboard.\n"); 1237 return EIO; 1238 } 1239 1240 /* 1241 * Allow us to set the XT_KEYBD flag in UserConfig so that keyboards 1242 * such as those on the IBM ThinkPad laptop computers can be used 1243 * with the standard console driver. 1244 */ 1245 if (codeset == 1) { 1246 if (send_kbd_command_and_data(kbdc, 1247 KBDC_SET_SCANCODE_SET, codeset) == KBD_ACK) { 1248 /* XT kbd doesn't need scan code translation */ 1249 c &= ~KBD_TRANSLATION; 1250 } else { 1251 /* 1252 * KEYBOARD ERROR 1253 * The XT kbd isn't usable unless the proper scan 1254 * code set is selected. 1255 */ 1256 set_controller_command_byte(kbdc, 0xff, c); 1257 kbdc_lock(kbdc, FALSE); 1258 printf("atkbd: unable to set the XT keyboard mode.\n"); 1259 return EIO; 1260 } 1261 } 1262 1263 #ifdef __alpha__ 1264 if (send_kbd_command_and_data( 1265 kbdc, KBDC_SET_SCANCODE_SET, 2) != KBD_ACK) { 1266 printf("atkbd: can't set translation.\n"); 1267 1268 } 1269 c |= KBD_TRANSLATION; 1270 #endif 1271 1272 /* enable the keyboard port and intr. */ 1273 if (!set_controller_command_byte(kbdc, 1274 KBD_KBD_CONTROL_BITS | KBD_TRANSLATION | KBD_OVERRIDE_KBD_LOCK, 1275 (c & (KBD_TRANSLATION | KBD_OVERRIDE_KBD_LOCK)) 1276 | KBD_ENABLE_KBD_PORT | KBD_ENABLE_KBD_INT)) { 1277 /* 1278 * CONTROLLER ERROR 1279 * This is serious; we are left with the disabled 1280 * keyboard intr. 1281 */ 1282 set_controller_command_byte(kbdc, 0xff, c); 1283 kbdc_lock(kbdc, FALSE); 1284 printf("atkbd: unable to enable the keyboard port and intr.\n"); 1285 return EIO; 1286 } 1287 1288 kbdc_lock(kbdc, FALSE); 1289 return 0; 1290 } 1291 1292 static int 1293 write_kbd(KBDC kbdc, int command, int data) 1294 { 1295 int s; 1296 1297 /* prevent the timeout routine from polling the keyboard */ 1298 if (!kbdc_lock(kbdc, TRUE)) 1299 return EBUSY; 1300 1301 /* disable the keyboard and mouse interrupt */ 1302 s = spltty(); 1303 #if 0 1304 c = get_controller_command_byte(kbdc); 1305 if ((c == -1) 1306 || !set_controller_command_byte(kbdc, 1307 kbdc_get_device_mask(kbdc), 1308 KBD_DISABLE_KBD_PORT | KBD_DISABLE_KBD_INT 1309 | KBD_DISABLE_AUX_PORT | KBD_DISABLE_AUX_INT)) { 1310 /* CONTROLLER ERROR */ 1311 kbdc_lock(kbdc, FALSE); 1312 splx(s); 1313 return EIO; 1314 } 1315 /* 1316 * Now that the keyboard controller is told not to generate 1317 * the keyboard and mouse interrupts, call `splx()' to allow 1318 * the other tty interrupts. The clock interrupt may also occur, 1319 * but the timeout routine (`scrn_timer()') will be blocked 1320 * by the lock flag set via `kbdc_lock()' 1321 */ 1322 splx(s); 1323 #endif 1324 1325 if (send_kbd_command_and_data(kbdc, command, data) != KBD_ACK) 1326 send_kbd_command(kbdc, KBDC_ENABLE_KBD); 1327 1328 #if 0 1329 /* restore the interrupts */ 1330 if (!set_controller_command_byte(kbdc, 1331 kbdc_get_device_mask(kbdc), 1332 c & (KBD_KBD_CONTROL_BITS | KBD_AUX_CONTROL_BITS))) { 1333 /* CONTROLLER ERROR */ 1334 } 1335 #else 1336 splx(s); 1337 #endif 1338 kbdc_lock(kbdc, FALSE); 1339 1340 return 0; 1341 } 1342 1343 static int 1344 get_kbd_id(KBDC kbdc) 1345 { 1346 int id1, id2; 1347 1348 empty_both_buffers(kbdc, 10); 1349 id1 = id2 = -1; 1350 if (send_kbd_command(kbdc, KBDC_SEND_DEV_ID) != KBD_ACK) 1351 return -1; 1352 1353 DELAY(10000); /* 10 msec delay */ 1354 id1 = read_kbd_data(kbdc); 1355 if (id1 != -1) 1356 id2 = read_kbd_data(kbdc); 1357 1358 if ((id1 == -1) || (id2 == -1)) { 1359 empty_both_buffers(kbdc, 10); 1360 test_controller(kbdc); 1361 test_kbd_port(kbdc); 1362 return -1; 1363 } 1364 return ((id2 << 8) | id1); 1365 } 1366 1367 static int delays[] = { 250, 500, 750, 1000 }; 1368 static int rates[] = { 34, 38, 42, 46, 50, 55, 59, 63, 1369 68, 76, 84, 92, 100, 110, 118, 126, 1370 136, 152, 168, 184, 200, 220, 236, 252, 1371 272, 304, 336, 368, 400, 440, 472, 504 }; 1372 1373 static int 1374 typematic_delay(int i) 1375 { 1376 return delays[(i >> 5) & 3]; 1377 } 1378 1379 static int 1380 typematic_rate(int i) 1381 { 1382 return rates[i & 0x1f]; 1383 } 1384 1385 static int 1386 typematic(int delay, int rate) 1387 { 1388 int value; 1389 int i; 1390 1391 for (i = sizeof(delays)/sizeof(delays[0]) - 1; i > 0; --i) { 1392 if (delay >= delays[i]) 1393 break; 1394 } 1395 value = i << 5; 1396 for (i = sizeof(rates)/sizeof(rates[0]) - 1; i > 0; --i) { 1397 if (rate >= rates[i]) 1398 break; 1399 } 1400 value |= i; 1401 return value; 1402 } 1403 1404 #endif /* NATKBD > 0 */
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