atkbd.c revision 49820
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 * $Id: atkbd.c,v 1.12 1999/07/18 06:16:25 yokota Exp $ 27 */ 28 29#include "atkbd.h" 30#include "opt_kbd.h" 31#include "opt_atkbd.h" 32#include "opt_devfs.h" 33 34#if NATKBD > 0 35 36#include <sys/param.h> 37#include <sys/systm.h> 38#include <sys/kernel.h> 39#include <sys/conf.h> 40#include <sys/bus.h> 41#include <sys/proc.h> 42#include <sys/tty.h> 43#include <sys/fcntl.h> 44#include <sys/malloc.h> 45 46#include <dev/kbd/kbdreg.h> 47#include <dev/kbd/atkbdreg.h> 48#include <dev/kbd/atkbdcreg.h> 49 50#include <isa/isareg.h> 51 52#define ATKBD_SOFTC(unit) \ 53 ((atkbd_softc_t *)devclass_get_softc(atkbd_devclass, unit)) 54 55extern devclass_t atkbd_devclass; 56 57static timeout_t atkbd_timeout; 58 59#ifdef KBD_INSTALL_CDEV 60 61static d_open_t atkbdopen; 62static d_close_t atkbdclose; 63static d_read_t atkbdread; 64static d_ioctl_t atkbdioctl; 65static d_poll_t atkbdpoll; 66 67static struct cdevsw atkbd_cdevsw = { 68 /* open */ atkbdopen, 69 /* close */ atkbdclose, 70 /* read */ atkbdread, 71 /* write */ nowrite, 72 /* ioctl */ atkbdioctl, 73 /* stop */ nostop, 74 /* reset */ noreset, 75 /* devtotty */ nodevtotty, 76 /* poll */ atkbdpoll, 77 /* mmap */ nommap, 78 /* strategy */ nostrategy, 79 /* name */ ATKBD_DRIVER_NAME, 80 /* parms */ noparms, 81 /* maj */ -1, 82 /* dump */ nodump, 83 /* psize */ nopsize, 84 /* flags */ 0, 85 /* maxio */ 0, 86 /* bmaj */ -1 87}; 88 89#endif /* KBD_INSTALL_CDEV */ 90 91int 92atkbd_probe_unit(int unit, int port, int irq, int flags) 93{ 94 keyboard_switch_t *sw; 95 int args[2]; 96 int error; 97 98 sw = kbd_get_switch(ATKBD_DRIVER_NAME); 99 if (sw == NULL) 100 return ENXIO; 101 102 args[0] = port; 103 args[1] = irq; 104 error = (*sw->probe)(unit, args, flags); 105 if (error) 106 return error; 107 return 0; 108} 109 110int 111atkbd_attach_unit(int unit, atkbd_softc_t *sc, int port, int irq, int flags) 112{ 113 keyboard_switch_t *sw; 114 int args[2]; 115 int error; 116 117 if (sc->flags & ATKBD_ATTACHED) 118 return 0; 119 120 sw = kbd_get_switch(ATKBD_DRIVER_NAME); 121 if (sw == NULL) 122 return ENXIO; 123 124 /* reset, initialize and enable the device */ 125 args[0] = port; 126 args[1] = irq; 127 sc->kbd = NULL; 128 error = (*sw->probe)(unit, args, flags); 129 if (error) 130 return error; 131 error = (*sw->init)(unit, &sc->kbd, args, flags); 132 if (error) 133 return error; 134 (*sw->enable)(sc->kbd); 135 136#ifdef KBD_INSTALL_CDEV 137 /* attach a virtual keyboard cdev */ 138 error = kbd_attach(makedev(0, ATKBD_MKMINOR(unit)), sc->kbd, 139 &atkbd_cdevsw); 140 if (error) 141 return error; 142#endif 143 144 /* 145 * This is a kludge to compensate for lost keyboard interrupts. 146 * A similar code used to be in syscons. See below. XXX 147 */ 148 atkbd_timeout(sc->kbd); 149 150 if (bootverbose) 151 (*sw->diag)(sc->kbd, bootverbose); 152 153 sc->flags |= ATKBD_ATTACHED; 154 return 0; 155} 156 157static void 158atkbd_timeout(void *arg) 159{ 160 keyboard_t *kbd; 161 int s; 162 163 /* The following comments are extracted from syscons.c (1.287) */ 164 /* 165 * With release 2.1 of the Xaccel server, the keyboard is left 166 * hanging pretty often. Apparently an interrupt from the 167 * keyboard is lost, and I don't know why (yet). 168 * This ugly hack calls scintr if input is ready for the keyboard 169 * and conveniently hides the problem. XXX 170 */ 171 /* 172 * Try removing anything stuck in the keyboard controller; whether 173 * it's a keyboard scan code or mouse data. `scintr()' doesn't 174 * read the mouse data directly, but `kbdio' routines will, as a 175 * side effect. 176 */ 177 s = spltty(); 178 kbd = (keyboard_t *)arg; 179 if ((*kbdsw[kbd->kb_index]->lock)(kbd, TRUE)) { 180 /* 181 * We have seen the lock flag is not set. Let's reset 182 * the flag early, otherwise the LED update routine fails 183 * which may want the lock during the interrupt routine. 184 */ 185 (*kbdsw[kbd->kb_index]->lock)(kbd, FALSE); 186 if ((*kbdsw[kbd->kb_index]->check_char)(kbd)) 187 (*kbdsw[kbd->kb_index]->intr)(kbd, NULL); 188 } 189 splx(s); 190 timeout(atkbd_timeout, arg, hz/10); 191} 192 193/* cdev driver functions */ 194 195#ifdef KBD_INSTALL_CDEV 196 197static int 198atkbdopen(dev_t dev, int flag, int mode, struct proc *p) 199{ 200 atkbd_softc_t *sc; 201 202 sc = ATKBD_SOFTC(ATKBD_UNIT(dev)); 203 if (sc == NULL) 204 return ENXIO; 205 if (mode & (FWRITE | O_CREAT | O_APPEND | O_TRUNC)) 206 return ENODEV; 207 208 /* FIXME: set the initial input mode (K_XLATE?) and lock state? */ 209 return genkbdopen(&sc->gensc, sc->kbd, flag, mode, p); 210} 211 212static int 213atkbdclose(dev_t dev, int flag, int mode, struct proc *p) 214{ 215 atkbd_softc_t *sc; 216 217 sc = ATKBD_SOFTC(ATKBD_UNIT(dev)); 218 return genkbdclose(&sc->gensc, sc->kbd, flag, mode, p); 219} 220 221static int 222atkbdread(dev_t dev, struct uio *uio, int flag) 223{ 224 atkbd_softc_t *sc; 225 226 sc = ATKBD_SOFTC(ATKBD_UNIT(dev)); 227 return genkbdread(&sc->gensc, sc->kbd, uio, flag); 228} 229 230static int 231atkbdioctl(dev_t dev, u_long cmd, caddr_t arg, int flag, struct proc *p) 232{ 233 atkbd_softc_t *sc; 234 235 sc = ATKBD_SOFTC(ATKBD_UNIT(dev)); 236 return genkbdioctl(&sc->gensc, sc->kbd, cmd, arg, flag, p); 237} 238 239static int 240atkbdpoll(dev_t dev, int event, struct proc *p) 241{ 242 atkbd_softc_t *sc; 243 244 sc = ATKBD_SOFTC(ATKBD_UNIT(dev)); 245 return genkbdpoll(&sc->gensc, sc->kbd, event, p); 246} 247 248#endif /* KBD_INSTALL_CDEV */ 249 250/* LOW-LEVEL */ 251 252#include <machine/limits.h> 253#include <machine/console.h> 254#include <machine/clock.h> 255 256#define ATKBD_DEFAULT 0 257 258typedef struct atkbd_state { 259 KBDC kbdc; /* keyboard controller */ 260 /* XXX: don't move this field; pcvt 261 * expects `kbdc' to be the first 262 * field in this structure. */ 263 int ks_mode; /* input mode (K_XLATE,K_RAW,K_CODE) */ 264 int ks_flags; /* flags */ 265#define COMPOSE (1 << 0) 266 int ks_polling; 267 int ks_state; /* shift/lock key state */ 268 int ks_accents; /* accent key index (> 0) */ 269 u_int ks_composed_char; /* composed char code (> 0) */ 270 u_char ks_prefix; /* AT scan code prefix */ 271} atkbd_state_t; 272 273/* keyboard driver declaration */ 274static int atkbd_configure(int flags); 275static kbd_probe_t atkbd_probe; 276static kbd_init_t atkbd_init; 277static kbd_term_t atkbd_term; 278static kbd_intr_t atkbd_intr; 279static kbd_test_if_t atkbd_test_if; 280static kbd_enable_t atkbd_enable; 281static kbd_disable_t atkbd_disable; 282static kbd_read_t atkbd_read; 283static kbd_check_t atkbd_check; 284static kbd_read_char_t atkbd_read_char; 285static kbd_check_char_t atkbd_check_char; 286static kbd_ioctl_t atkbd_ioctl; 287static kbd_lock_t atkbd_lock; 288static kbd_clear_state_t atkbd_clear_state; 289static kbd_get_state_t atkbd_get_state; 290static kbd_set_state_t atkbd_set_state; 291static kbd_poll_mode_t atkbd_poll; 292 293keyboard_switch_t atkbdsw = { 294 atkbd_probe, 295 atkbd_init, 296 atkbd_term, 297 atkbd_intr, 298 atkbd_test_if, 299 atkbd_enable, 300 atkbd_disable, 301 atkbd_read, 302 atkbd_check, 303 atkbd_read_char, 304 atkbd_check_char, 305 atkbd_ioctl, 306 atkbd_lock, 307 atkbd_clear_state, 308 atkbd_get_state, 309 atkbd_set_state, 310 genkbd_get_fkeystr, 311 atkbd_poll, 312 genkbd_diag, 313}; 314 315KEYBOARD_DRIVER(atkbd, atkbdsw, atkbd_configure); 316 317/* local functions */ 318static int setup_kbd_port(KBDC kbdc, int port, int intr); 319static int get_kbd_echo(KBDC kbdc); 320static int probe_keyboard(KBDC kbdc, int flags); 321static int init_keyboard(KBDC kbdc, int *type, int flags); 322static int write_kbd(KBDC kbdc, int command, int data); 323static int get_kbd_id(KBDC kbdc); 324static int typematic(int delay, int rate); 325 326/* local variables */ 327 328/* the initial key map, accent map and fkey strings */ 329#ifdef ATKBD_DFLT_KEYMAP 330#define KBD_DFLT_KEYMAP 331#include "atkbdmap.h" 332#endif 333#include <dev/kbd/kbdtables.h> 334 335/* structures for the default keyboard */ 336static keyboard_t default_kbd; 337static atkbd_state_t default_kbd_state; 338static keymap_t default_keymap; 339static accentmap_t default_accentmap; 340static fkeytab_t default_fkeytab[NUM_FKEYS]; 341 342/* 343 * The back door to the keyboard driver! 344 * This function is called by the console driver, via the kbdio module, 345 * to tickle keyboard drivers when the low-level console is being initialized. 346 * Almost nothing in the kernel has been initialied yet. Try to probe 347 * keyboards if possible. 348 * NOTE: because of the way the low-level conole is initialized, this routine 349 * may be called more than once!! 350 */ 351static int 352atkbd_configure(int flags) 353{ 354 keyboard_t *kbd; 355 int arg[2]; 356 int i; 357 358 /* probe the keyboard controller */ 359 atkbdc_configure(); 360 361 /* if the driver is disabled, unregister the keyboard if any */ 362 if ((resource_int_value("atkbd", ATKBD_DEFAULT, "disabled", &i) == 0) 363 && i != 0) { 364 i = kbd_find_keyboard(ATKBD_DRIVER_NAME, ATKBD_DEFAULT); 365 if (i >= 0) { 366 kbd = kbd_get_keyboard(i); 367 kbd_unregister(kbd); 368 kbd->kb_flags &= ~KB_REGISTERED; 369 } 370 return 0; 371 } 372 373 /* XXX: a kludge to obtain the device configuration flags */ 374 if (resource_int_value("atkbd", ATKBD_DEFAULT, "flags", &i) == 0) 375 flags |= i; 376 377 /* probe the default keyboard */ 378 arg[0] = -1; 379 arg[1] = -1; 380 kbd = NULL; 381 if (atkbd_probe(ATKBD_DEFAULT, arg, flags)) 382 return 0; 383 if (atkbd_init(ATKBD_DEFAULT, &kbd, arg, flags)) 384 return 0; 385 386 /* return the number of found keyboards */ 387 return 1; 388} 389 390/* low-level functions */ 391 392/* detect a keyboard */ 393static int 394atkbd_probe(int unit, void *arg, int flags) 395{ 396 KBDC kbdc; 397 int *data = (int *)arg; 398 399 /* XXX */ 400 if (unit == ATKBD_DEFAULT) { 401 if (KBD_IS_PROBED(&default_kbd)) 402 return 0; 403 } 404 405 kbdc = kbdc_open(data[0]); 406 if (kbdc == NULL) 407 return ENXIO; 408 if (probe_keyboard(kbdc, flags)) { 409 if (flags & KB_CONF_FAIL_IF_NO_KBD) 410 return ENXIO; 411 } 412 return 0; 413} 414 415/* reset and initialize the device */ 416static int 417atkbd_init(int unit, keyboard_t **kbdp, void *arg, int flags) 418{ 419 keyboard_t *kbd; 420 atkbd_state_t *state; 421 keymap_t *keymap; 422 accentmap_t *accmap; 423 fkeytab_t *fkeymap; 424 int fkeymap_size; 425 int *data = (int *)arg; 426 427 /* XXX */ 428 if (unit == ATKBD_DEFAULT) { 429 *kbdp = kbd = &default_kbd; 430 if (KBD_IS_INITIALIZED(kbd) && KBD_IS_CONFIGURED(kbd)) 431 return 0; 432 state = &default_kbd_state; 433 keymap = &default_keymap; 434 accmap = &default_accentmap; 435 fkeymap = default_fkeytab; 436 fkeymap_size = 437 sizeof(default_fkeytab)/sizeof(default_fkeytab[0]); 438 } else if (*kbdp == NULL) { 439 *kbdp = kbd = malloc(sizeof(*kbd), M_DEVBUF, M_NOWAIT); 440 if (kbd == NULL) 441 return ENOMEM; 442 bzero(kbd, sizeof(*kbd)); 443 state = malloc(sizeof(*state), M_DEVBUF, M_NOWAIT); 444 keymap = malloc(sizeof(key_map), M_DEVBUF, M_NOWAIT); 445 accmap = malloc(sizeof(accent_map), M_DEVBUF, M_NOWAIT); 446 fkeymap = malloc(sizeof(fkey_tab), M_DEVBUF, M_NOWAIT); 447 fkeymap_size = sizeof(fkey_tab)/sizeof(fkey_tab[0]); 448 if ((state == NULL) || (keymap == NULL) || (accmap == NULL) 449 || (fkeymap == NULL)) { 450 if (state != NULL) 451 free(state, M_DEVBUF); 452 if (keymap != NULL) 453 free(keymap, M_DEVBUF); 454 if (accmap != NULL) 455 free(accmap, M_DEVBUF); 456 if (fkeymap != NULL) 457 free(fkeymap, M_DEVBUF); 458 free(kbd, M_DEVBUF); 459 return ENOMEM; 460 } 461 bzero(state, sizeof(*state)); 462 } else if (KBD_IS_INITIALIZED(*kbdp) && KBD_IS_CONFIGURED(*kbdp)) { 463 return 0; 464 } else { 465 kbd = *kbdp; 466 state = (atkbd_state_t *)kbd->kb_data; 467 bzero(state, sizeof(*state)); 468 keymap = kbd->kb_keymap; 469 accmap = kbd->kb_accentmap; 470 fkeymap = kbd->kb_fkeytab; 471 fkeymap_size = kbd->kb_fkeytab_size; 472 } 473 474 if (!KBD_IS_PROBED(kbd)) { 475 state->kbdc = kbdc_open(data[0]); 476 if (state->kbdc == NULL) 477 return ENXIO; 478 kbd_init_struct(kbd, ATKBD_DRIVER_NAME, KB_OTHER, unit, flags, 479 data[0], IO_KBDSIZE); 480 bcopy(&key_map, keymap, sizeof(key_map)); 481 bcopy(&accent_map, accmap, sizeof(accent_map)); 482 bcopy(fkey_tab, fkeymap, 483 imin(fkeymap_size*sizeof(fkeymap[0]), sizeof(fkey_tab))); 484 kbd_set_maps(kbd, keymap, accmap, fkeymap, fkeymap_size); 485 kbd->kb_data = (void *)state; 486 487 if (probe_keyboard(state->kbdc, flags)) { /* shouldn't happen */ 488 if (flags & KB_CONF_FAIL_IF_NO_KBD) 489 return ENXIO; 490 } else { 491 KBD_FOUND_DEVICE(kbd); 492 } 493 atkbd_clear_state(kbd); 494 state->ks_mode = K_XLATE; 495 /* 496 * FIXME: set the initial value for lock keys in ks_state 497 * according to the BIOS data? 498 */ 499 KBD_PROBE_DONE(kbd); 500 } 501 if (!KBD_IS_INITIALIZED(kbd) && !(flags & KB_CONF_PROBE_ONLY)) { 502 kbd->kb_config = flags & ~KB_CONF_PROBE_ONLY; 503 if (KBD_HAS_DEVICE(kbd) 504 && init_keyboard(state->kbdc, &kbd->kb_type, kbd->kb_config) 505 && (kbd->kb_config & KB_CONF_FAIL_IF_NO_KBD)) 506 return ENXIO; 507 atkbd_ioctl(kbd, KDSETLED, (caddr_t)&state->ks_state); 508 KBD_INIT_DONE(kbd); 509 } 510 if (!KBD_IS_CONFIGURED(kbd)) { 511 if (kbd_register(kbd) < 0) 512 return ENXIO; 513 KBD_CONFIG_DONE(kbd); 514 } 515 516 return 0; 517} 518 519/* finish using this keyboard */ 520static int 521atkbd_term(keyboard_t *kbd) 522{ 523 kbd_unregister(kbd); 524 return 0; 525} 526 527/* keyboard interrupt routine */ 528static int 529atkbd_intr(keyboard_t *kbd, void *arg) 530{ 531 atkbd_state_t *state; 532 int c; 533 534 if (KBD_IS_ACTIVE(kbd) && KBD_IS_BUSY(kbd)) { 535 /* let the callback function to process the input */ 536 (*kbd->kb_callback.kc_func)(kbd, KBDIO_KEYINPUT, 537 kbd->kb_callback.kc_arg); 538 } else { 539 /* read and discard the input; no one is waiting for input */ 540 do { 541 c = atkbd_read_char(kbd, FALSE); 542 } while (c != NOKEY); 543 544 if (!KBD_HAS_DEVICE(kbd)) { 545 /* 546 * The keyboard was not detected before; 547 * it must have been reconnected! 548 */ 549 state = (atkbd_state_t *)kbd->kb_data; 550 init_keyboard(state->kbdc, &kbd->kb_type, 551 kbd->kb_config); 552 atkbd_ioctl(kbd, KDSETLED, (caddr_t)&state->ks_state); 553 KBD_FOUND_DEVICE(kbd); 554 } 555 } 556 return 0; 557} 558 559/* test the interface to the device */ 560static int 561atkbd_test_if(keyboard_t *kbd) 562{ 563 int error; 564 int s; 565 566 error = 0; 567 empty_both_buffers(((atkbd_state_t *)kbd->kb_data)->kbdc, 10); 568 s = spltty(); 569 if (!test_controller(((atkbd_state_t *)kbd->kb_data)->kbdc)) 570 error = EIO; 571 else if (test_kbd_port(((atkbd_state_t *)kbd->kb_data)->kbdc) != 0) 572 error = EIO; 573 splx(s); 574 575 return error; 576} 577 578/* 579 * Enable the access to the device; until this function is called, 580 * the client cannot read from the keyboard. 581 */ 582static int 583atkbd_enable(keyboard_t *kbd) 584{ 585 int s; 586 587 s = spltty(); 588 KBD_ACTIVATE(kbd); 589 splx(s); 590 return 0; 591} 592 593/* disallow the access to the device */ 594static int 595atkbd_disable(keyboard_t *kbd) 596{ 597 int s; 598 599 s = spltty(); 600 KBD_DEACTIVATE(kbd); 601 splx(s); 602 return 0; 603} 604 605/* read one byte from the keyboard if it's allowed */ 606static int 607atkbd_read(keyboard_t *kbd, int wait) 608{ 609 int c; 610 611 if (wait) 612 c = read_kbd_data(((atkbd_state_t *)kbd->kb_data)->kbdc); 613 else 614 c = read_kbd_data_no_wait(((atkbd_state_t *)kbd->kb_data)->kbdc); 615 return (KBD_IS_ACTIVE(kbd) ? c : -1); 616} 617 618/* check if data is waiting */ 619static int 620atkbd_check(keyboard_t *kbd) 621{ 622 if (!KBD_IS_ACTIVE(kbd)) 623 return FALSE; 624 return kbdc_data_ready(((atkbd_state_t *)kbd->kb_data)->kbdc); 625} 626 627/* read char from the keyboard */ 628static u_int 629atkbd_read_char(keyboard_t *kbd, int wait) 630{ 631 atkbd_state_t *state; 632 u_int action; 633 int scancode; 634 int keycode; 635 636 state = (atkbd_state_t *)kbd->kb_data; 637next_code: 638 /* do we have a composed char to return? */ 639 if (!(state->ks_flags & COMPOSE) && (state->ks_composed_char > 0)) { 640 action = state->ks_composed_char; 641 state->ks_composed_char = 0; 642 if (action > UCHAR_MAX) 643 return ERRKEY; 644 return action; 645 } 646 647 /* see if there is something in the keyboard port */ 648 if (wait) { 649 do { 650 scancode = read_kbd_data(state->kbdc); 651 } while (scancode == -1); 652 } else { 653 scancode = read_kbd_data_no_wait(state->kbdc); 654 if (scancode == -1) 655 return NOKEY; 656 } 657 658 /* return the byte as is for the K_RAW mode */ 659 if (state->ks_mode == K_RAW) 660 return scancode; 661 662 /* translate the scan code into a keycode */ 663 keycode = scancode & 0x7F; 664 switch (state->ks_prefix) { 665 case 0x00: /* normal scancode */ 666 switch(scancode) { 667 case 0xB8: /* left alt (compose key) released */ 668 if (state->ks_flags & COMPOSE) { 669 state->ks_flags &= ~COMPOSE; 670 if (state->ks_composed_char > UCHAR_MAX) 671 state->ks_composed_char = 0; 672 } 673 break; 674 case 0x38: /* left alt (compose key) pressed */ 675 if (!(state->ks_flags & COMPOSE)) { 676 state->ks_flags |= COMPOSE; 677 state->ks_composed_char = 0; 678 } 679 break; 680 case 0xE0: 681 case 0xE1: 682 state->ks_prefix = scancode; 683 goto next_code; 684 } 685 break; 686 case 0xE0: /* 0xE0 prefix */ 687 state->ks_prefix = 0; 688 switch (keycode) { 689 case 0x1C: /* right enter key */ 690 keycode = 0x59; 691 break; 692 case 0x1D: /* right ctrl key */ 693 keycode = 0x5A; 694 break; 695 case 0x35: /* keypad divide key */ 696 keycode = 0x5B; 697 break; 698 case 0x37: /* print scrn key */ 699 keycode = 0x5C; 700 break; 701 case 0x38: /* right alt key (alt gr) */ 702 keycode = 0x5D; 703 break; 704 case 0x46: /* ctrl-pause/break on AT 101 (see below) */ 705 keycode = 0x68; 706 break; 707 case 0x47: /* grey home key */ 708 keycode = 0x5E; 709 break; 710 case 0x48: /* grey up arrow key */ 711 keycode = 0x5F; 712 break; 713 case 0x49: /* grey page up key */ 714 keycode = 0x60; 715 break; 716 case 0x4B: /* grey left arrow key */ 717 keycode = 0x61; 718 break; 719 case 0x4D: /* grey right arrow key */ 720 keycode = 0x62; 721 break; 722 case 0x4F: /* grey end key */ 723 keycode = 0x63; 724 break; 725 case 0x50: /* grey down arrow key */ 726 keycode = 0x64; 727 break; 728 case 0x51: /* grey page down key */ 729 keycode = 0x65; 730 break; 731 case 0x52: /* grey insert key */ 732 keycode = 0x66; 733 break; 734 case 0x53: /* grey delete key */ 735 keycode = 0x67; 736 break; 737 /* the following 3 are only used on the MS "Natural" keyboard */ 738 case 0x5b: /* left Window key */ 739 keycode = 0x69; 740 break; 741 case 0x5c: /* right Window key */ 742 keycode = 0x6a; 743 break; 744 case 0x5d: /* menu key */ 745 keycode = 0x6b; 746 break; 747 default: /* ignore everything else */ 748 goto next_code; 749 } 750 break; 751 case 0xE1: /* 0xE1 prefix */ 752 /* 753 * The pause/break key on the 101 keyboard produces: 754 * E1-1D-45 E1-9D-C5 755 * Ctrl-pause/break produces: 756 * E0-46 E0-C6 (See above.) 757 */ 758 state->ks_prefix = 0; 759 if (keycode == 0x1D) 760 state->ks_prefix = 0x1D; 761 goto next_code; 762 /* NOT REACHED */ 763 case 0x1D: /* pause / break */ 764 state->ks_prefix = 0; 765 if (keycode != 0x45) 766 goto next_code; 767 keycode = 0x68; 768 break; 769 } 770 771 if (kbd->kb_type == KB_84) { 772 switch (keycode) { 773 case 0x37: /* *(numpad)/print screen */ 774 if (state->ks_flags & SHIFTS) 775 keycode = 0x5c; /* print screen */ 776 break; 777 case 0x45: /* num lock/pause */ 778 if (state->ks_flags & CTLS) 779 keycode = 0x68; /* pause */ 780 break; 781 case 0x46: /* scroll lock/break */ 782 if (state->ks_flags & CTLS) 783 keycode = 0x6c; /* break */ 784 break; 785 } 786 } else if (kbd->kb_type == KB_101) { 787 switch (keycode) { 788 case 0x5c: /* print screen */ 789 if (state->ks_flags & ALTS) 790 keycode = 0x54; /* sysrq */ 791 break; 792 case 0x68: /* pause/break */ 793 if (state->ks_flags & CTLS) 794 keycode = 0x6c; /* break */ 795 break; 796 } 797 } 798 799 /* return the key code in the K_CODE mode */ 800 if (state->ks_mode == K_CODE) 801 return (keycode | (scancode & 0x80)); 802 803 /* compose a character code */ 804 if (state->ks_flags & COMPOSE) { 805 switch (keycode | (scancode & 0x80)) { 806 /* key pressed, process it */ 807 case 0x47: case 0x48: case 0x49: /* keypad 7,8,9 */ 808 state->ks_composed_char *= 10; 809 state->ks_composed_char += keycode - 0x40; 810 if (state->ks_composed_char > UCHAR_MAX) 811 return ERRKEY; 812 goto next_code; 813 case 0x4B: case 0x4C: case 0x4D: /* keypad 4,5,6 */ 814 state->ks_composed_char *= 10; 815 state->ks_composed_char += keycode - 0x47; 816 if (state->ks_composed_char > UCHAR_MAX) 817 return ERRKEY; 818 goto next_code; 819 case 0x4F: case 0x50: case 0x51: /* keypad 1,2,3 */ 820 state->ks_composed_char *= 10; 821 state->ks_composed_char += keycode - 0x4E; 822 if (state->ks_composed_char > UCHAR_MAX) 823 return ERRKEY; 824 goto next_code; 825 case 0x52: /* keypad 0 */ 826 state->ks_composed_char *= 10; 827 if (state->ks_composed_char > UCHAR_MAX) 828 return ERRKEY; 829 goto next_code; 830 831 /* key released, no interest here */ 832 case 0xC7: case 0xC8: case 0xC9: /* keypad 7,8,9 */ 833 case 0xCB: case 0xCC: case 0xCD: /* keypad 4,5,6 */ 834 case 0xCF: case 0xD0: case 0xD1: /* keypad 1,2,3 */ 835 case 0xD2: /* keypad 0 */ 836 goto next_code; 837 838 case 0x38: /* left alt key */ 839 break; 840 841 default: 842 if (state->ks_composed_char > 0) { 843 state->ks_flags &= ~COMPOSE; 844 state->ks_composed_char = 0; 845 return ERRKEY; 846 } 847 break; 848 } 849 } 850 851 /* keycode to key action */ 852 action = genkbd_keyaction(kbd, keycode, scancode & 0x80, 853 &state->ks_state, &state->ks_accents); 854 if (action == NOKEY) 855 goto next_code; 856 else 857 return action; 858} 859 860/* check if char is waiting */ 861static int 862atkbd_check_char(keyboard_t *kbd) 863{ 864 atkbd_state_t *state; 865 866 if (!KBD_IS_ACTIVE(kbd)) 867 return FALSE; 868 state = (atkbd_state_t *)kbd->kb_data; 869 if (!(state->ks_flags & COMPOSE) && (state->ks_composed_char > 0)) 870 return TRUE; 871 return kbdc_data_ready(state->kbdc); 872} 873 874/* some useful control functions */ 875static int 876atkbd_ioctl(keyboard_t *kbd, u_long cmd, caddr_t arg) 877{ 878 /* trasnlate LED_XXX bits into the device specific bits */ 879 static u_char ledmap[8] = { 880 0, 4, 2, 6, 1, 5, 3, 7, 881 }; 882 atkbd_state_t *state = kbd->kb_data; 883 int error; 884 int s; 885 int i; 886 887 s = spltty(); 888 switch (cmd) { 889 890 case KDGKBMODE: /* get keyboard mode */ 891 *(int *)arg = state->ks_mode; 892 break; 893 case KDSKBMODE: /* set keyboard mode */ 894 switch (*(int *)arg) { 895 case K_XLATE: 896 if (state->ks_mode != K_XLATE) { 897 /* make lock key state and LED state match */ 898 state->ks_state &= ~LOCK_MASK; 899 state->ks_state |= KBD_LED_VAL(kbd); 900 } 901 /* FALL THROUGH */ 902 case K_RAW: 903 case K_CODE: 904 if (state->ks_mode != *(int *)arg) { 905 atkbd_clear_state(kbd); 906 state->ks_mode = *(int *)arg; 907 } 908 break; 909 default: 910 splx(s); 911 return EINVAL; 912 } 913 break; 914 915 case KDGETLED: /* get keyboard LED */ 916 *(int *)arg = KBD_LED_VAL(kbd); 917 break; 918 case KDSETLED: /* set keyboard LED */ 919 /* NOTE: lock key state in ks_state won't be changed */ 920 if (*(int *)arg & ~LOCK_MASK) { 921 splx(s); 922 return EINVAL; 923 } 924 i = *(int *)arg; 925 /* replace CAPS LED with ALTGR LED for ALTGR keyboards */ 926 if (kbd->kb_keymap->n_keys > ALTGR_OFFSET) { 927 if (i & ALKED) 928 i |= CLKED; 929 else 930 i &= ~CLKED; 931 } 932 if (KBD_HAS_DEVICE(kbd)) { 933 error = write_kbd(state->kbdc, KBDC_SET_LEDS, 934 ledmap[i & LED_MASK]); 935 if (error) { 936 splx(s); 937 return error; 938 } 939 } 940 KBD_LED_VAL(kbd) = *(int *)arg; 941 break; 942 943 case KDGKBSTATE: /* get lock key state */ 944 *(int *)arg = state->ks_state & LOCK_MASK; 945 break; 946 case KDSKBSTATE: /* set lock key state */ 947 if (*(int *)arg & ~LOCK_MASK) { 948 splx(s); 949 return EINVAL; 950 } 951 state->ks_state &= ~LOCK_MASK; 952 state->ks_state |= *(int *)arg; 953 splx(s); 954 /* set LEDs and quit */ 955 return atkbd_ioctl(kbd, KDSETLED, arg); 956 957 case KDSETREPEAT: /* set keyboard repeat rate (new interface) */ 958 splx(s); 959 if (!KBD_HAS_DEVICE(kbd)) 960 return 0; 961 i = typematic(((int *)arg)[0], ((int *)arg)[1]); 962 return write_kbd(state->kbdc, KBDC_SET_TYPEMATIC, i); 963 964 case KDSETRAD: /* set keyboard repeat rate (old interface) */ 965 splx(s); 966 if (!KBD_HAS_DEVICE(kbd)) 967 return 0; 968 return write_kbd(state->kbdc, KBDC_SET_TYPEMATIC, *(int *)arg); 969 970 case PIO_KEYMAP: /* set keyboard translation table */ 971 case PIO_KEYMAPENT: /* set keyboard translation table entry */ 972 case PIO_DEADKEYMAP: /* set accent key translation table */ 973 state->ks_accents = 0; 974 /* FALL THROUGH */ 975 default: 976 splx(s); 977 return genkbd_commonioctl(kbd, cmd, arg); 978 } 979 980 splx(s); 981 return 0; 982} 983 984/* lock the access to the keyboard */ 985static int 986atkbd_lock(keyboard_t *kbd, int lock) 987{ 988 return kbdc_lock(((atkbd_state_t *)kbd->kb_data)->kbdc, lock); 989} 990 991/* clear the internal state of the keyboard */ 992static void 993atkbd_clear_state(keyboard_t *kbd) 994{ 995 atkbd_state_t *state; 996 997 state = (atkbd_state_t *)kbd->kb_data; 998 state->ks_flags = 0; 999 state->ks_polling = 0; 1000 state->ks_state &= LOCK_MASK; /* preserve locking key state */ 1001 state->ks_accents = 0; 1002 state->ks_composed_char = 0; 1003#if 0 1004 state->ks_prefix = 0; /* XXX */ 1005#endif 1006} 1007 1008/* save the internal state */ 1009static int 1010atkbd_get_state(keyboard_t *kbd, void *buf, size_t len) 1011{ 1012 if (len == 0) 1013 return sizeof(atkbd_state_t); 1014 if (len < sizeof(atkbd_state_t)) 1015 return -1; 1016 bcopy(kbd->kb_data, buf, sizeof(atkbd_state_t)); 1017 return 0; 1018} 1019 1020/* set the internal state */ 1021static int 1022atkbd_set_state(keyboard_t *kbd, void *buf, size_t len) 1023{ 1024 if (len < sizeof(atkbd_state_t)) 1025 return ENOMEM; 1026 if (((atkbd_state_t *)kbd->kb_data)->kbdc 1027 != ((atkbd_state_t *)buf)->kbdc) 1028 return ENOMEM; 1029 bcopy(buf, kbd->kb_data, sizeof(atkbd_state_t)); 1030 return 0; 1031} 1032 1033static int 1034atkbd_poll(keyboard_t *kbd, int on) 1035{ 1036 atkbd_state_t *state; 1037 int s; 1038 1039 state = (atkbd_state_t *)kbd->kb_data; 1040 s = spltty(); 1041 if (on) 1042 ++state->ks_polling; 1043 else 1044 --state->ks_polling; 1045 splx(s); 1046 return 0; 1047} 1048 1049/* local functions */ 1050 1051static int 1052setup_kbd_port(KBDC kbdc, int port, int intr) 1053{ 1054 if (!set_controller_command_byte(kbdc, 1055 KBD_KBD_CONTROL_BITS, 1056 ((port) ? KBD_ENABLE_KBD_PORT : KBD_DISABLE_KBD_PORT) 1057 | ((intr) ? KBD_ENABLE_KBD_INT : KBD_DISABLE_KBD_INT))) 1058 return 1; 1059 return 0; 1060} 1061 1062static int 1063get_kbd_echo(KBDC kbdc) 1064{ 1065 /* enable the keyboard port, but disable the keyboard intr. */ 1066 if (setup_kbd_port(kbdc, TRUE, FALSE)) 1067 /* CONTROLLER ERROR: there is very little we can do... */ 1068 return ENXIO; 1069 1070 /* see if something is present */ 1071 write_kbd_command(kbdc, KBDC_ECHO); 1072 if (read_kbd_data(kbdc) != KBD_ECHO) { 1073 empty_both_buffers(kbdc, 10); 1074 test_controller(kbdc); 1075 test_kbd_port(kbdc); 1076 return ENXIO; 1077 } 1078 1079 /* enable the keyboard port and intr. */ 1080 if (setup_kbd_port(kbdc, TRUE, TRUE)) { 1081 /* 1082 * CONTROLLER ERROR 1083 * This is serious; the keyboard intr is left disabled! 1084 */ 1085 return ENXIO; 1086 } 1087 1088 return 0; 1089} 1090 1091static int 1092probe_keyboard(KBDC kbdc, int flags) 1093{ 1094 /* 1095 * Don't try to print anything in this function. The low-level 1096 * console may not have been initialized yet... 1097 */ 1098 int err; 1099 int c; 1100 int m; 1101 1102 if (!kbdc_lock(kbdc, TRUE)) { 1103 /* driver error? */ 1104 return ENXIO; 1105 } 1106 1107 /* flush any noise in the buffer */ 1108 empty_both_buffers(kbdc, 10); 1109 1110 /* save the current keyboard controller command byte */ 1111 m = kbdc_get_device_mask(kbdc) & ~KBD_KBD_CONTROL_BITS; 1112 c = get_controller_command_byte(kbdc); 1113 if (c == -1) { 1114 /* CONTROLLER ERROR */ 1115 kbdc_set_device_mask(kbdc, m); 1116 kbdc_lock(kbdc, FALSE); 1117 return ENXIO; 1118 } 1119 1120 /* 1121 * The keyboard may have been screwed up by the boot block. 1122 * We may just be able to recover from error by testing the controller 1123 * and the keyboard port. The controller command byte needs to be 1124 * saved before this recovery operation, as some controllers seem 1125 * to set the command byte to particular values. 1126 */ 1127 test_controller(kbdc); 1128 test_kbd_port(kbdc); 1129 1130 err = get_kbd_echo(kbdc); 1131 if (err == 0) { 1132 kbdc_set_device_mask(kbdc, m | KBD_KBD_CONTROL_BITS); 1133 } else { 1134 if (c != -1) 1135 /* try to restore the command byte as before */ 1136 set_controller_command_byte(kbdc, 0xff, c); 1137 kbdc_set_device_mask(kbdc, m); 1138 } 1139 1140 kbdc_lock(kbdc, FALSE); 1141 return err; 1142} 1143 1144static int 1145init_keyboard(KBDC kbdc, int *type, int flags) 1146{ 1147 int codeset; 1148 int id; 1149 int c; 1150 1151 if (!kbdc_lock(kbdc, TRUE)) { 1152 /* driver error? */ 1153 return EIO; 1154 } 1155 1156 /* save the current controller command byte */ 1157 empty_both_buffers(kbdc, 10); 1158 c = get_controller_command_byte(kbdc); 1159 if (c == -1) { 1160 /* CONTROLLER ERROR */ 1161 kbdc_lock(kbdc, FALSE); 1162 printf("atkbd: unable to get the current command byte value.\n"); 1163 return EIO; 1164 } 1165 if (bootverbose) 1166 printf("atkbd: the current kbd controller command byte %04x\n", 1167 c); 1168#if 0 1169 /* override the keyboard lock switch */ 1170 c |= KBD_OVERRIDE_KBD_LOCK; 1171#endif 1172 1173 /* enable the keyboard port, but disable the keyboard intr. */ 1174 if (setup_kbd_port(kbdc, TRUE, FALSE)) { 1175 /* CONTROLLER ERROR: there is very little we can do... */ 1176 printf("atkbd: unable to set the command byte.\n"); 1177 kbdc_lock(kbdc, FALSE); 1178 return EIO; 1179 } 1180 1181 /* 1182 * Check if we have an XT keyboard before we attempt to reset it. 1183 * The procedure assumes that the keyboard and the controller have 1184 * been set up properly by BIOS and have not been messed up 1185 * during the boot process. 1186 */ 1187 codeset = -1; 1188 if (flags & KB_CONF_ALT_SCANCODESET) 1189 /* the user says there is a XT keyboard */ 1190 codeset = 1; 1191#ifdef KBD_DETECT_XT_KEYBOARD 1192 else if ((c & KBD_TRANSLATION) == 0) { 1193 /* SET_SCANCODE_SET is not always supported; ignore error */ 1194 if (send_kbd_command_and_data(kbdc, KBDC_SET_SCANCODE_SET, 0) 1195 == KBD_ACK) 1196 codeset = read_kbd_data(kbdc); 1197 } 1198 if (bootverbose) 1199 printf("atkbd: scancode set %d\n", codeset); 1200#endif /* KBD_DETECT_XT_KEYBOARD */ 1201 1202 *type = KB_OTHER; 1203 id = get_kbd_id(kbdc); 1204 switch(id) { 1205 case 0x41ab: 1206 case 0x83ab: 1207 *type = KB_101; 1208 break; 1209 case -1: /* AT 84 keyboard doesn't return ID */ 1210 *type = KB_84; 1211 break; 1212 default: 1213 break; 1214 } 1215 if (bootverbose) 1216 printf("atkbd: keyboard ID 0x%x (%d)\n", id, *type); 1217 1218 /* reset keyboard hardware */ 1219 if (!(flags & KB_CONF_NO_RESET) && !reset_kbd(kbdc)) { 1220 /* 1221 * KEYBOARD ERROR 1222 * Keyboard reset may fail either because the keyboard 1223 * doen't exist, or because the keyboard doesn't pass 1224 * the self-test, or the keyboard controller on the 1225 * motherboard and the keyboard somehow fail to shake hands. 1226 * It is just possible, particularly in the last case, 1227 * that the keyoard controller may be left in a hung state. 1228 * test_controller() and test_kbd_port() appear to bring 1229 * the keyboard controller back (I don't know why and how, 1230 * though.) 1231 */ 1232 empty_both_buffers(kbdc, 10); 1233 test_controller(kbdc); 1234 test_kbd_port(kbdc); 1235 /* 1236 * We could disable the keyboard port and interrupt... but, 1237 * the keyboard may still exist (see above). 1238 */ 1239 set_controller_command_byte(kbdc, 0xff, c); 1240 kbdc_lock(kbdc, FALSE); 1241 if (bootverbose) 1242 printf("atkbd: failed to reset the keyboard.\n"); 1243 return EIO; 1244 } 1245 1246 /* 1247 * Allow us to set the XT_KEYBD flag in UserConfig so that keyboards 1248 * such as those on the IBM ThinkPad laptop computers can be used 1249 * with the standard console driver. 1250 */ 1251 if (codeset == 1) { 1252 if (send_kbd_command_and_data(kbdc, 1253 KBDC_SET_SCANCODE_SET, codeset) == KBD_ACK) { 1254 /* XT kbd doesn't need scan code translation */ 1255 c &= ~KBD_TRANSLATION; 1256 } else { 1257 /* 1258 * KEYBOARD ERROR 1259 * The XT kbd isn't usable unless the proper scan 1260 * code set is selected. 1261 */ 1262 set_controller_command_byte(kbdc, 0xff, c); 1263 kbdc_lock(kbdc, FALSE); 1264 printf("atkbd: unable to set the XT keyboard mode.\n"); 1265 return EIO; 1266 } 1267 } 1268 1269#ifdef __alpha__ 1270 if (send_kbd_command_and_data( 1271 kbdc, KBDC_SET_SCANCODE_SET, 2) != KBD_ACK) { 1272 printf("atkbd: can't set translation.\n"); 1273 1274 } 1275 c |= KBD_TRANSLATION; 1276#endif 1277 1278 /* enable the keyboard port and intr. */ 1279 if (!set_controller_command_byte(kbdc, 1280 KBD_KBD_CONTROL_BITS | KBD_TRANSLATION | KBD_OVERRIDE_KBD_LOCK, 1281 (c & (KBD_TRANSLATION | KBD_OVERRIDE_KBD_LOCK)) 1282 | KBD_ENABLE_KBD_PORT | KBD_ENABLE_KBD_INT)) { 1283 /* 1284 * CONTROLLER ERROR 1285 * This is serious; we are left with the disabled 1286 * keyboard intr. 1287 */ 1288 set_controller_command_byte(kbdc, 0xff, c); 1289 kbdc_lock(kbdc, FALSE); 1290 printf("atkbd: unable to enable the keyboard port and intr.\n"); 1291 return EIO; 1292 } 1293 1294 kbdc_lock(kbdc, FALSE); 1295 return 0; 1296} 1297 1298static int 1299write_kbd(KBDC kbdc, int command, int data) 1300{ 1301 int s; 1302 1303 /* prevent the timeout routine from polling the keyboard */ 1304 if (!kbdc_lock(kbdc, TRUE)) 1305 return EBUSY; 1306 1307 /* disable the keyboard and mouse interrupt */ 1308 s = spltty(); 1309#if 0 1310 c = get_controller_command_byte(kbdc); 1311 if ((c == -1) 1312 || !set_controller_command_byte(kbdc, 1313 kbdc_get_device_mask(kbdc), 1314 KBD_DISABLE_KBD_PORT | KBD_DISABLE_KBD_INT 1315 | KBD_DISABLE_AUX_PORT | KBD_DISABLE_AUX_INT)) { 1316 /* CONTROLLER ERROR */ 1317 kbdc_lock(kbdc, FALSE); 1318 splx(s); 1319 return EIO; 1320 } 1321 /* 1322 * Now that the keyboard controller is told not to generate 1323 * the keyboard and mouse interrupts, call `splx()' to allow 1324 * the other tty interrupts. The clock interrupt may also occur, 1325 * but the timeout routine (`scrn_timer()') will be blocked 1326 * by the lock flag set via `kbdc_lock()' 1327 */ 1328 splx(s); 1329#endif 1330 1331 if (send_kbd_command_and_data(kbdc, command, data) != KBD_ACK) 1332 send_kbd_command(kbdc, KBDC_ENABLE_KBD); 1333 1334#if 0 1335 /* restore the interrupts */ 1336 if (!set_controller_command_byte(kbdc, 1337 kbdc_get_device_mask(kbdc), 1338 c & (KBD_KBD_CONTROL_BITS | KBD_AUX_CONTROL_BITS))) { 1339 /* CONTROLLER ERROR */ 1340 } 1341#else 1342 splx(s); 1343#endif 1344 kbdc_lock(kbdc, FALSE); 1345 1346 return 0; 1347} 1348 1349static int 1350get_kbd_id(KBDC kbdc) 1351{ 1352 int id1, id2; 1353 1354 empty_both_buffers(kbdc, 10); 1355 id1 = id2 = -1; 1356 if (send_kbd_command(kbdc, KBDC_SEND_DEV_ID) != KBD_ACK) 1357 return -1; 1358 1359 DELAY(10000); /* 10 msec delay */ 1360 id1 = read_kbd_data(kbdc); 1361 if (id1 != -1) 1362 id2 = read_kbd_data(kbdc); 1363 1364 if ((id1 == -1) || (id2 == -1)) { 1365 empty_both_buffers(kbdc, 10); 1366 test_controller(kbdc); 1367 test_kbd_port(kbdc); 1368 return -1; 1369 } 1370 return ((id2 << 8) | id1); 1371} 1372 1373static int 1374typematic(int delay, int rate) 1375{ 1376 static int delays[] = { 250, 500, 750, 1000 }; 1377 static int rates[] = { 34, 38, 42, 46, 50, 55, 59, 63, 1378 68, 76, 84, 92, 100, 110, 118, 126, 1379 136, 152, 168, 184, 200, 220, 236, 252, 1380 272, 304, 336, 368, 400, 440, 472, 504 }; 1381 int value; 1382 int i; 1383 1384 for (i = sizeof(delays)/sizeof(delays[0]) - 1; i > 0; --i) { 1385 if (delay >= delays[i]) 1386 break; 1387 } 1388 value = i << 5; 1389 for (i = sizeof(rates)/sizeof(rates[0]) - 1; i > 0; --i) { 1390 if (rate >= rates[i]) 1391 break; 1392 } 1393 value |= i; 1394 return value; 1395} 1396 1397#endif /* NATKBD > 0 */ 1398