atkbd.c revision 47625
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 1.10 1999/05/20 09:49:33 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 /* if the driver is disabled, unregister the keyboard if any */ 359 if ((resource_int_value("atkbd", ATKBD_DEFAULT, "disabled", &i) == 0) 360 && i != 0) { 361 i = kbd_find_keyboard(ATKBD_DRIVER_NAME, ATKBD_DEFAULT); 362 if (i >= 0) { 363 kbd = kbd_get_keyboard(i); 364 kbd_unregister(kbd); 365 kbd->kb_flags &= ~KB_REGISTERED; 366 return 0; 367 } 368 } 369 370 /* XXX: a kludge to obtain the device configuration flags */ 371 if (resource_int_value("atkbd", ATKBD_DEFAULT, "flags", &i) == 0) 372 flags |= i; 373 374 /* probe the keyboard controller */ 375 atkbdc_configure(); 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 if (KBD_HAS_DEVICE(kbd) 503 && init_keyboard(state->kbdc, &kbd->kb_type, kbd->kb_config) 504 && (kbd->kb_config & KB_CONF_FAIL_IF_NO_KBD)) 505 return ENXIO; 506 atkbd_ioctl(kbd, KDSETLED, (caddr_t)&state->ks_state); 507 KBD_INIT_DONE(kbd); 508 } 509 if (!KBD_IS_CONFIGURED(kbd)) { 510 if (kbd_register(kbd) < 0) 511 return ENXIO; 512 KBD_CONFIG_DONE(kbd); 513 } 514 515 return 0; 516} 517 518/* finish using this keyboard */ 519static int 520atkbd_term(keyboard_t *kbd) 521{ 522 kbd_unregister(kbd); 523 return 0; 524} 525 526/* keyboard interrupt routine */ 527static int 528atkbd_intr(keyboard_t *kbd, void *arg) 529{ 530 atkbd_state_t *state; 531 int c; 532 533 if (KBD_IS_ACTIVE(kbd) && KBD_IS_BUSY(kbd)) { 534 /* let the callback function to process the input */ 535 (*kbd->kb_callback.kc_func)(kbd, KBDIO_KEYINPUT, 536 kbd->kb_callback.kc_arg); 537 } else { 538 /* read and discard the input; no one is waiting for input */ 539 do { 540 c = atkbd_read_char(kbd, FALSE); 541 } while (c != NOKEY); 542 543 if (!KBD_HAS_DEVICE(kbd)) { 544 /* 545 * The keyboard was not detected before; 546 * it must have been reconnected! 547 */ 548 state = (atkbd_state_t *)kbd->kb_data; 549 init_keyboard(state->kbdc, &kbd->kb_type, 550 kbd->kb_config); 551 atkbd_ioctl(kbd, KDSETLED, (caddr_t)&state->ks_state); 552 KBD_FOUND_DEVICE(kbd); 553 } 554 } 555 return 0; 556} 557 558/* test the interface to the device */ 559static int 560atkbd_test_if(keyboard_t *kbd) 561{ 562 int error; 563 int s; 564 565 error = 0; 566 empty_both_buffers(((atkbd_state_t *)kbd->kb_data)->kbdc, 10); 567 s = spltty(); 568 if (!test_controller(((atkbd_state_t *)kbd->kb_data)->kbdc)) 569 error = EIO; 570 else if (test_kbd_port(((atkbd_state_t *)kbd->kb_data)->kbdc) != 0) 571 error = EIO; 572 splx(s); 573 574 return error; 575} 576 577/* 578 * Enable the access to the device; until this function is called, 579 * the client cannot read from the keyboard. 580 */ 581static int 582atkbd_enable(keyboard_t *kbd) 583{ 584 int s; 585 586 s = spltty(); 587 KBD_ACTIVATE(kbd); 588 splx(s); 589 return 0; 590} 591 592/* disallow the access to the device */ 593static int 594atkbd_disable(keyboard_t *kbd) 595{ 596 int s; 597 598 s = spltty(); 599 KBD_DEACTIVATE(kbd); 600 splx(s); 601 return 0; 602} 603 604/* read one byte from the keyboard if it's allowed */ 605static int 606atkbd_read(keyboard_t *kbd, int wait) 607{ 608 int c; 609 610 if (wait) 611 c = read_kbd_data(((atkbd_state_t *)kbd->kb_data)->kbdc); 612 else 613 c = read_kbd_data_no_wait(((atkbd_state_t *)kbd->kb_data)->kbdc); 614 return (KBD_IS_ACTIVE(kbd) ? c : -1); 615} 616 617/* check if data is waiting */ 618static int 619atkbd_check(keyboard_t *kbd) 620{ 621 if (!KBD_IS_ACTIVE(kbd)) 622 return FALSE; 623 return kbdc_data_ready(((atkbd_state_t *)kbd->kb_data)->kbdc); 624} 625 626/* read char from the keyboard */ 627static u_int 628atkbd_read_char(keyboard_t *kbd, int wait) 629{ 630 atkbd_state_t *state; 631 u_int action; 632 int scancode; 633 int keycode; 634 635 state = (atkbd_state_t *)kbd->kb_data; 636next_code: 637 /* do we have a composed char to return? */ 638 if (!(state->ks_flags & COMPOSE) && (state->ks_composed_char > 0)) { 639 action = state->ks_composed_char; 640 state->ks_composed_char = 0; 641 if (action > UCHAR_MAX) 642 return ERRKEY; 643 return action; 644 } 645 646 /* see if there is something in the keyboard port */ 647 if (wait) { 648 do { 649 scancode = read_kbd_data(state->kbdc); 650 } while (scancode == -1); 651 } else { 652 scancode = read_kbd_data_no_wait(state->kbdc); 653 if (scancode == -1) 654 return NOKEY; 655 } 656 657 /* return the byte as is for the K_RAW mode */ 658 if (state->ks_mode == K_RAW) 659 return scancode; 660 661 /* translate the scan code into a keycode */ 662 keycode = scancode & 0x7F; 663 switch (state->ks_prefix) { 664 case 0x00: /* normal scancode */ 665 switch(scancode) { 666 case 0xB8: /* left alt (compose key) released */ 667 if (state->ks_flags & COMPOSE) { 668 state->ks_flags &= ~COMPOSE; 669 if (state->ks_composed_char > UCHAR_MAX) 670 state->ks_composed_char = 0; 671 } 672 break; 673 case 0x38: /* left alt (compose key) pressed */ 674 if (!(state->ks_flags & COMPOSE)) { 675 state->ks_flags |= COMPOSE; 676 state->ks_composed_char = 0; 677 } 678 break; 679 case 0xE0: 680 case 0xE1: 681 state->ks_prefix = scancode; 682 goto next_code; 683 } 684 break; 685 case 0xE0: /* 0xE0 prefix */ 686 state->ks_prefix = 0; 687 switch (keycode) { 688 case 0x1C: /* right enter key */ 689 keycode = 0x59; 690 break; 691 case 0x1D: /* right ctrl key */ 692 keycode = 0x5A; 693 break; 694 case 0x35: /* keypad divide key */ 695 keycode = 0x5B; 696 break; 697 case 0x37: /* print scrn key */ 698 keycode = 0x5C; 699 break; 700 case 0x38: /* right alt key (alt gr) */ 701 keycode = 0x5D; 702 break; 703 case 0x46: /* ctrl-pause/break on AT 101 (see below) */ 704 keycode = 0x68; 705 break; 706 case 0x47: /* grey home key */ 707 keycode = 0x5E; 708 break; 709 case 0x48: /* grey up arrow key */ 710 keycode = 0x5F; 711 break; 712 case 0x49: /* grey page up key */ 713 keycode = 0x60; 714 break; 715 case 0x4B: /* grey left arrow key */ 716 keycode = 0x61; 717 break; 718 case 0x4D: /* grey right arrow key */ 719 keycode = 0x62; 720 break; 721 case 0x4F: /* grey end key */ 722 keycode = 0x63; 723 break; 724 case 0x50: /* grey down arrow key */ 725 keycode = 0x64; 726 break; 727 case 0x51: /* grey page down key */ 728 keycode = 0x65; 729 break; 730 case 0x52: /* grey insert key */ 731 keycode = 0x66; 732 break; 733 case 0x53: /* grey delete key */ 734 keycode = 0x67; 735 break; 736 /* the following 3 are only used on the MS "Natural" keyboard */ 737 case 0x5b: /* left Window key */ 738 keycode = 0x69; 739 break; 740 case 0x5c: /* right Window key */ 741 keycode = 0x6a; 742 break; 743 case 0x5d: /* menu key */ 744 keycode = 0x6b; 745 break; 746 default: /* ignore everything else */ 747 goto next_code; 748 } 749 break; 750 case 0xE1: /* 0xE1 prefix */ 751 /* 752 * The pause/break key on the 101 keyboard produces: 753 * E1-1D-45 E1-9D-C5 754 * Ctrl-pause/break produces: 755 * E0-46 E0-C6 (See above.) 756 */ 757 state->ks_prefix = 0; 758 if (keycode == 0x1D) 759 state->ks_prefix = 0x1D; 760 goto next_code; 761 /* NOT REACHED */ 762 case 0x1D: /* pause / break */ 763 state->ks_prefix = 0; 764 if (keycode != 0x45) 765 goto next_code; 766 keycode = 0x68; 767 break; 768 } 769 770 if (kbd->kb_type == KB_84) { 771 switch (keycode) { 772 case 0x37: /* *(numpad)/print screen */ 773 if (state->ks_flags & SHIFTS) 774 keycode = 0x5c; /* print screen */ 775 break; 776 case 0x45: /* num lock/pause */ 777 if (state->ks_flags & CTLS) 778 keycode = 0x68; /* pause */ 779 break; 780 case 0x46: /* scroll lock/break */ 781 if (state->ks_flags & CTLS) 782 keycode = 0x6c; /* break */ 783 break; 784 } 785 } else if (kbd->kb_type == KB_101) { 786 switch (keycode) { 787 case 0x5c: /* print screen */ 788 if (state->ks_flags & ALTS) 789 keycode = 0x54; /* sysrq */ 790 break; 791 case 0x68: /* pause/break */ 792 if (state->ks_flags & CTLS) 793 keycode = 0x6c; /* break */ 794 break; 795 } 796 } 797 798 /* return the key code in the K_CODE mode */ 799 if (state->ks_mode == K_CODE) 800 return (keycode | (scancode & 0x80)); 801 802 /* compose a character code */ 803 if (state->ks_flags & COMPOSE) { 804 switch (keycode | (scancode & 0x80)) { 805 /* key pressed, process it */ 806 case 0x47: case 0x48: case 0x49: /* keypad 7,8,9 */ 807 state->ks_composed_char *= 10; 808 state->ks_composed_char += keycode - 0x40; 809 if (state->ks_composed_char > UCHAR_MAX) 810 return ERRKEY; 811 goto next_code; 812 case 0x4B: case 0x4C: case 0x4D: /* keypad 4,5,6 */ 813 state->ks_composed_char *= 10; 814 state->ks_composed_char += keycode - 0x47; 815 if (state->ks_composed_char > UCHAR_MAX) 816 return ERRKEY; 817 goto next_code; 818 case 0x4F: case 0x50: case 0x51: /* keypad 1,2,3 */ 819 state->ks_composed_char *= 10; 820 state->ks_composed_char += keycode - 0x4E; 821 if (state->ks_composed_char > UCHAR_MAX) 822 return ERRKEY; 823 goto next_code; 824 case 0x52: /* keypad 0 */ 825 state->ks_composed_char *= 10; 826 if (state->ks_composed_char > UCHAR_MAX) 827 return ERRKEY; 828 goto next_code; 829 830 /* key released, no interest here */ 831 case 0xC7: case 0xC8: case 0xC9: /* keypad 7,8,9 */ 832 case 0xCB: case 0xCC: case 0xCD: /* keypad 4,5,6 */ 833 case 0xCF: case 0xD0: case 0xD1: /* keypad 1,2,3 */ 834 case 0xD2: /* keypad 0 */ 835 goto next_code; 836 837 case 0x38: /* left alt key */ 838 break; 839 840 default: 841 if (state->ks_composed_char > 0) { 842 state->ks_flags &= ~COMPOSE; 843 state->ks_composed_char = 0; 844 return ERRKEY; 845 } 846 break; 847 } 848 } 849 850 /* keycode to key action */ 851 action = genkbd_keyaction(kbd, keycode, scancode & 0x80, 852 &state->ks_state, &state->ks_accents); 853 if (action == NOKEY) 854 goto next_code; 855 else 856 return action; 857} 858 859/* check if char is waiting */ 860static int 861atkbd_check_char(keyboard_t *kbd) 862{ 863 atkbd_state_t *state; 864 865 if (!KBD_IS_ACTIVE(kbd)) 866 return FALSE; 867 state = (atkbd_state_t *)kbd->kb_data; 868 if (!(state->ks_flags & COMPOSE) && (state->ks_composed_char > 0)) 869 return TRUE; 870 return kbdc_data_ready(state->kbdc); 871} 872 873/* some useful control functions */ 874static int 875atkbd_ioctl(keyboard_t *kbd, u_long cmd, caddr_t arg) 876{ 877 /* trasnlate LED_XXX bits into the device specific bits */ 878 static u_char ledmap[8] = { 879 0, 4, 2, 6, 1, 5, 3, 7, 880 }; 881 atkbd_state_t *state = kbd->kb_data; 882 int error; 883 int s; 884 int i; 885 886 s = spltty(); 887 switch (cmd) { 888 889 case KDGKBMODE: /* get keyboard mode */ 890 *(int *)arg = state->ks_mode; 891 break; 892 case KDSKBMODE: /* set keyboard mode */ 893 switch (*(int *)arg) { 894 case K_XLATE: 895 if (state->ks_mode != K_XLATE) { 896 /* make lock key state and LED state match */ 897 state->ks_state &= ~LOCK_MASK; 898 state->ks_state |= KBD_LED_VAL(kbd); 899 } 900 /* FALL THROUGH */ 901 case K_RAW: 902 case K_CODE: 903 if (state->ks_mode != *(int *)arg) { 904 atkbd_clear_state(kbd); 905 state->ks_mode = *(int *)arg; 906 } 907 break; 908 default: 909 splx(s); 910 return EINVAL; 911 } 912 break; 913 914 case KDGETLED: /* get keyboard LED */ 915 *(int *)arg = KBD_LED_VAL(kbd); 916 break; 917 case KDSETLED: /* set keyboard LED */ 918 /* NOTE: lock key state in ks_state won't be changed */ 919 if (*(int *)arg & ~LOCK_MASK) { 920 splx(s); 921 return EINVAL; 922 } 923 i = *(int *)arg; 924 /* replace CAPS LED with ALTGR LED for ALTGR keyboards */ 925 if (kbd->kb_keymap->n_keys > ALTGR_OFFSET) { 926 if (i & ALKED) 927 i |= CLKED; 928 else 929 i &= ~CLKED; 930 } 931 if (KBD_HAS_DEVICE(kbd)) { 932 error = write_kbd(state->kbdc, KBDC_SET_LEDS, 933 ledmap[i & LED_MASK]); 934 if (error) { 935 splx(s); 936 return error; 937 } 938 } 939 KBD_LED_VAL(kbd) = *(int *)arg; 940 break; 941 942 case KDGKBSTATE: /* get lock key state */ 943 *(int *)arg = state->ks_state & LOCK_MASK; 944 break; 945 case KDSKBSTATE: /* set lock key state */ 946 if (*(int *)arg & ~LOCK_MASK) { 947 splx(s); 948 return EINVAL; 949 } 950 state->ks_state &= ~LOCK_MASK; 951 state->ks_state |= *(int *)arg; 952 splx(s); 953 /* set LEDs and quit */ 954 return atkbd_ioctl(kbd, KDSETLED, arg); 955 956 case KDSETREPEAT: /* set keyboard repeat rate (new interface) */ 957 splx(s); 958 if (!KBD_HAS_DEVICE(kbd)) 959 return 0; 960 i = typematic(((int *)arg)[0], ((int *)arg)[1]); 961 return write_kbd(state->kbdc, KBDC_SET_TYPEMATIC, i); 962 963 case KDSETRAD: /* set keyboard repeat rate (old interface) */ 964 splx(s); 965 if (!KBD_HAS_DEVICE(kbd)) 966 return 0; 967 return write_kbd(state->kbdc, KBDC_SET_TYPEMATIC, *(int *)arg); 968 969 case PIO_KEYMAP: /* set keyboard translation table */ 970 case PIO_KEYMAPENT: /* set keyboard translation table entry */ 971 case PIO_DEADKEYMAP: /* set accent key translation table */ 972 state->ks_accents = 0; 973 /* FALL THROUGH */ 974 default: 975 splx(s); 976 return genkbd_commonioctl(kbd, cmd, arg); 977 } 978 979 splx(s); 980 return 0; 981} 982 983/* lock the access to the keyboard */ 984static int 985atkbd_lock(keyboard_t *kbd, int lock) 986{ 987 return kbdc_lock(((atkbd_state_t *)kbd->kb_data)->kbdc, lock); 988} 989 990/* clear the internal state of the keyboard */ 991static void 992atkbd_clear_state(keyboard_t *kbd) 993{ 994 atkbd_state_t *state; 995 996 state = (atkbd_state_t *)kbd->kb_data; 997 state->ks_flags = 0; 998 state->ks_polling = 0; 999 state->ks_state &= LOCK_MASK; /* preserve locking key state */ 1000 state->ks_accents = 0; 1001 state->ks_composed_char = 0; 1002#if 0 1003 state->ks_prefix = 0; /* XXX */ 1004#endif 1005} 1006 1007/* save the internal state */ 1008static int 1009atkbd_get_state(keyboard_t *kbd, void *buf, size_t len) 1010{ 1011 if (len == 0) 1012 return sizeof(atkbd_state_t); 1013 if (len < sizeof(atkbd_state_t)) 1014 return -1; 1015 bcopy(kbd->kb_data, buf, sizeof(atkbd_state_t)); 1016 return 0; 1017} 1018 1019/* set the internal state */ 1020static int 1021atkbd_set_state(keyboard_t *kbd, void *buf, size_t len) 1022{ 1023 if (len < sizeof(atkbd_state_t)) 1024 return ENOMEM; 1025 if (((atkbd_state_t *)kbd->kb_data)->kbdc 1026 != ((atkbd_state_t *)buf)->kbdc) 1027 return ENOMEM; 1028 bcopy(buf, kbd->kb_data, sizeof(atkbd_state_t)); 1029 return 0; 1030} 1031 1032static int 1033atkbd_poll(keyboard_t *kbd, int on) 1034{ 1035 atkbd_state_t *state; 1036 int s; 1037 1038 state = (atkbd_state_t *)kbd->kb_data; 1039 s = spltty(); 1040 if (on) 1041 ++state->ks_polling; 1042 else 1043 --state->ks_polling; 1044 splx(s); 1045 return 0; 1046} 1047 1048/* local functions */ 1049 1050static int 1051setup_kbd_port(KBDC kbdc, int port, int intr) 1052{ 1053 if (!set_controller_command_byte(kbdc, 1054 KBD_KBD_CONTROL_BITS, 1055 ((port) ? KBD_ENABLE_KBD_PORT : KBD_DISABLE_KBD_PORT) 1056 | ((intr) ? KBD_ENABLE_KBD_INT : KBD_DISABLE_KBD_INT))) 1057 return 1; 1058 return 0; 1059} 1060 1061static int 1062get_kbd_echo(KBDC kbdc) 1063{ 1064 /* enable the keyboard port, but disable the keyboard intr. */ 1065 if (setup_kbd_port(kbdc, TRUE, FALSE)) 1066 /* CONTROLLER ERROR: there is very little we can do... */ 1067 return ENXIO; 1068 1069 /* see if something is present */ 1070 write_kbd_command(kbdc, KBDC_ECHO); 1071 if (read_kbd_data(kbdc) != KBD_ECHO) { 1072 empty_both_buffers(kbdc, 10); 1073 test_controller(kbdc); 1074 test_kbd_port(kbdc); 1075 return ENXIO; 1076 } 1077 1078 /* enable the keyboard port and intr. */ 1079 if (setup_kbd_port(kbdc, TRUE, TRUE)) { 1080 /* 1081 * CONTROLLER ERROR 1082 * This is serious; the keyboard intr is left disabled! 1083 */ 1084 return ENXIO; 1085 } 1086 1087 return 0; 1088} 1089 1090static int 1091probe_keyboard(KBDC kbdc, int flags) 1092{ 1093 /* 1094 * Don't try to print anything in this function. The low-level 1095 * console may not have been initialized yet... 1096 */ 1097 int err; 1098 int c; 1099 int m; 1100 1101 if (!kbdc_lock(kbdc, TRUE)) { 1102 /* driver error? */ 1103 return ENXIO; 1104 } 1105 1106 /* flush any noise in the buffer */ 1107 empty_both_buffers(kbdc, 10); 1108 1109 /* save the current keyboard controller command byte */ 1110 m = kbdc_get_device_mask(kbdc) & ~KBD_KBD_CONTROL_BITS; 1111 c = get_controller_command_byte(kbdc); 1112 if (c == -1) { 1113 /* CONTROLLER ERROR */ 1114 kbdc_set_device_mask(kbdc, m); 1115 kbdc_lock(kbdc, FALSE); 1116 return ENXIO; 1117 } 1118 1119 /* 1120 * The keyboard may have been screwed up by the boot block. 1121 * We may just be able to recover from error by testing the controller 1122 * and the keyboard port. The controller command byte needs to be 1123 * saved before this recovery operation, as some controllers seem 1124 * to set the command byte to particular values. 1125 */ 1126 test_controller(kbdc); 1127 test_kbd_port(kbdc); 1128 1129 err = get_kbd_echo(kbdc); 1130 if (err == 0) { 1131 kbdc_set_device_mask(kbdc, m | KBD_KBD_CONTROL_BITS); 1132 } else { 1133 if (c != -1) 1134 /* try to restore the command byte as before */ 1135 set_controller_command_byte(kbdc, 0xff, c); 1136 kbdc_set_device_mask(kbdc, m); 1137 } 1138 1139 kbdc_lock(kbdc, FALSE); 1140 return err; 1141} 1142 1143static int 1144init_keyboard(KBDC kbdc, int *type, int flags) 1145{ 1146 int codeset; 1147 int id; 1148 int c; 1149 1150 if (!kbdc_lock(kbdc, TRUE)) { 1151 /* driver error? */ 1152 return EIO; 1153 } 1154 1155 /* save the current controller command byte */ 1156 empty_both_buffers(kbdc, 10); 1157 c = get_controller_command_byte(kbdc); 1158 if (c == -1) { 1159 /* CONTROLLER ERROR */ 1160 kbdc_lock(kbdc, FALSE); 1161 printf("atkbd: unable to get the current command byte value.\n"); 1162 return EIO; 1163 } 1164 if (bootverbose) 1165 printf("atkbd: the current kbd controller command byte %04x\n", 1166 c); 1167#if 0 1168 /* override the keyboard lock switch */ 1169 c |= KBD_OVERRIDE_KBD_LOCK; 1170#endif 1171 1172 /* enable the keyboard port, but disable the keyboard intr. */ 1173 if (setup_kbd_port(kbdc, TRUE, FALSE)) { 1174 /* CONTROLLER ERROR: there is very little we can do... */ 1175 printf("atkbd: unable to set the command byte.\n"); 1176 kbdc_lock(kbdc, FALSE); 1177 return EIO; 1178 } 1179 1180 /* 1181 * Check if we have an XT keyboard before we attempt to reset it. 1182 * The procedure assumes that the keyboard and the controller have 1183 * been set up properly by BIOS and have not been messed up 1184 * during the boot process. 1185 */ 1186 codeset = -1; 1187 if (flags & KB_CONF_ALT_SCANCODESET) 1188 /* the user says there is a XT keyboard */ 1189 codeset = 1; 1190#ifdef KBD_DETECT_XT_KEYBOARD 1191 else if ((c & KBD_TRANSLATION) == 0) { 1192 /* SET_SCANCODE_SET is not always supported; ignore error */ 1193 if (send_kbd_command_and_data(kbdc, KBDC_SET_SCANCODE_SET, 0) 1194 == KBD_ACK) 1195 codeset = read_kbd_data(kbdc); 1196 } 1197 if (bootverbose) 1198 printf("atkbd: scancode set %d\n", codeset); 1199#endif /* KBD_DETECT_XT_KEYBOARD */ 1200 1201 *type = KB_OTHER; 1202 id = get_kbd_id(kbdc); 1203 switch(id) { 1204 case 0x41ab: 1205 case 0x83ab: 1206 *type = KB_101; 1207 break; 1208 case -1: /* AT 84 keyboard doesn't return ID */ 1209 *type = KB_84; 1210 break; 1211 default: 1212 break; 1213 } 1214 if (bootverbose) 1215 printf("atkbd: keyboard ID 0x%x (%d)\n", id, *type); 1216 1217 /* reset keyboard hardware */ 1218 if (!(flags & KB_CONF_NO_RESET) && !reset_kbd(kbdc)) { 1219 /* 1220 * KEYBOARD ERROR 1221 * Keyboard reset may fail either because the keyboard 1222 * doen't exist, or because the keyboard doesn't pass 1223 * the self-test, or the keyboard controller on the 1224 * motherboard and the keyboard somehow fail to shake hands. 1225 * It is just possible, particularly in the last case, 1226 * that the keyoard controller may be left in a hung state. 1227 * test_controller() and test_kbd_port() appear to bring 1228 * the keyboard controller back (I don't know why and how, 1229 * though.) 1230 */ 1231 empty_both_buffers(kbdc, 10); 1232 test_controller(kbdc); 1233 test_kbd_port(kbdc); 1234 /* 1235 * We could disable the keyboard port and interrupt... but, 1236 * the keyboard may still exist (see above). 1237 */ 1238 set_controller_command_byte(kbdc, 0xff, c); 1239 kbdc_lock(kbdc, FALSE); 1240 if (bootverbose) 1241 printf("atkbd: failed to reset the keyboard.\n"); 1242 return EIO; 1243 } 1244 1245 /* 1246 * Allow us to set the XT_KEYBD flag in UserConfig so that keyboards 1247 * such as those on the IBM ThinkPad laptop computers can be used 1248 * with the standard console driver. 1249 */ 1250 if (codeset == 1) { 1251 if (send_kbd_command_and_data(kbdc, 1252 KBDC_SET_SCANCODE_SET, codeset) == KBD_ACK) { 1253 /* XT kbd doesn't need scan code translation */ 1254 c &= ~KBD_TRANSLATION; 1255 } else { 1256 /* 1257 * KEYBOARD ERROR 1258 * The XT kbd isn't usable unless the proper scan 1259 * code set is selected. 1260 */ 1261 set_controller_command_byte(kbdc, 0xff, c); 1262 kbdc_lock(kbdc, FALSE); 1263 printf("atkbd: unable to set the XT keyboard mode.\n"); 1264 return EIO; 1265 } 1266 } 1267 1268#ifdef __alpha__ 1269 if (send_kbd_command_and_data( 1270 kbdc, KBDC_SET_SCANCODE_SET, 2) != KBD_ACK) { 1271 printf("atkbd: can't set translation.\n"); 1272 1273 } 1274 c |= KBD_TRANSLATION; 1275#endif 1276 1277 /* enable the keyboard port and intr. */ 1278 if (!set_controller_command_byte(kbdc, 1279 KBD_KBD_CONTROL_BITS | KBD_TRANSLATION | KBD_OVERRIDE_KBD_LOCK, 1280 (c & (KBD_TRANSLATION | KBD_OVERRIDE_KBD_LOCK)) 1281 | KBD_ENABLE_KBD_PORT | KBD_ENABLE_KBD_INT)) { 1282 /* 1283 * CONTROLLER ERROR 1284 * This is serious; we are left with the disabled 1285 * keyboard intr. 1286 */ 1287 set_controller_command_byte(kbdc, 0xff, c); 1288 kbdc_lock(kbdc, FALSE); 1289 printf("atkbd: unable to enable the keyboard port and intr.\n"); 1290 return EIO; 1291 } 1292 1293 kbdc_lock(kbdc, FALSE); 1294 return 0; 1295} 1296 1297static int 1298write_kbd(KBDC kbdc, int command, int data) 1299{ 1300 int s; 1301 1302 /* prevent the timeout routine from polling the keyboard */ 1303 if (!kbdc_lock(kbdc, TRUE)) 1304 return EBUSY; 1305 1306 /* disable the keyboard and mouse interrupt */ 1307 s = spltty(); 1308#if 0 1309 c = get_controller_command_byte(kbdc); 1310 if ((c == -1) 1311 || !set_controller_command_byte(kbdc, 1312 kbdc_get_device_mask(kbdc), 1313 KBD_DISABLE_KBD_PORT | KBD_DISABLE_KBD_INT 1314 | KBD_DISABLE_AUX_PORT | KBD_DISABLE_AUX_INT)) { 1315 /* CONTROLLER ERROR */ 1316 kbdc_lock(kbdc, FALSE); 1317 splx(s); 1318 return EIO; 1319 } 1320 /* 1321 * Now that the keyboard controller is told not to generate 1322 * the keyboard and mouse interrupts, call `splx()' to allow 1323 * the other tty interrupts. The clock interrupt may also occur, 1324 * but the timeout routine (`scrn_timer()') will be blocked 1325 * by the lock flag set via `kbdc_lock()' 1326 */ 1327 splx(s); 1328#endif 1329 1330 if (send_kbd_command_and_data(kbdc, command, data) != KBD_ACK) 1331 send_kbd_command(kbdc, KBDC_ENABLE_KBD); 1332 1333#if 0 1334 /* restore the interrupts */ 1335 if (!set_controller_command_byte(kbdc, 1336 kbdc_get_device_mask(kbdc), 1337 c & (KBD_KBD_CONTROL_BITS | KBD_AUX_CONTROL_BITS))) { 1338 /* CONTROLLER ERROR */ 1339 } 1340#else 1341 splx(s); 1342#endif 1343 kbdc_lock(kbdc, FALSE); 1344 1345 return 0; 1346} 1347 1348static int 1349get_kbd_id(KBDC kbdc) 1350{ 1351 int id1, id2; 1352 1353 empty_both_buffers(kbdc, 10); 1354 id1 = id2 = -1; 1355 if (send_kbd_command(kbdc, KBDC_SEND_DEV_ID) != KBD_ACK) 1356 return -1; 1357 1358 DELAY(10000); /* 10 msec delay */ 1359 id1 = read_kbd_data(kbdc); 1360 if (id1 != -1) 1361 id2 = read_kbd_data(kbdc); 1362 1363 if ((id1 == -1) || (id2 == -1)) { 1364 empty_both_buffers(kbdc, 10); 1365 test_controller(kbdc); 1366 test_kbd_port(kbdc); 1367 return -1; 1368 } 1369 return ((id2 << 8) | id1); 1370} 1371 1372static int 1373typematic(int delay, int rate) 1374{ 1375 static int delays[] = { 250, 500, 750, 1000 }; 1376 static int rates[] = { 34, 38, 42, 46, 50, 55, 59, 63, 1377 68, 76, 84, 92, 100, 110, 118, 126, 1378 136, 152, 168, 184, 200, 220, 236, 252, 1379 272, 304, 336, 368, 400, 440, 472, 504 }; 1380 int value; 1381 int i; 1382 1383 for (i = sizeof(delays)/sizeof(delays[0]) - 1; i > 0; --i) { 1384 if (delay >= delays[i]) 1385 break; 1386 } 1387 value = i << 5; 1388 for (i = sizeof(rates)/sizeof(rates[0]) - 1; i > 0; --i) { 1389 if (rate >= rates[i]) 1390 break; 1391 } 1392 value |= i; 1393 return value; 1394} 1395 1396#endif /* NATKBD > 0 */ 1397