1 /*- 2 * (MPSAFE) 3 * 4 * Copyright (c) 1999 Kazutaka YOKOTA <yokota@zodiac.mech.utsunomiya-u.ac.jp> 5 * All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer as 12 * the first lines of this file unmodified. 13 * 2. Redistributions in binary form must reproduce the above copyright 14 * notice, this list of conditions and the following disclaimer in the 15 * documentation and/or other materials provided with the distribution. 16 * 17 * THIS SOFTWARE IS PROVIDED BY THE AUTHORS ``AS IS'' AND ANY EXPRESS OR 18 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 19 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 20 * IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR ANY DIRECT, INDIRECT, 21 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 22 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 23 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 24 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 25 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 26 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 27 * 28 * $FreeBSD: src/sys/dev/kbd/atkbd.c,v 1.25.2.4 2002/04/08 19:21:38 asmodai Exp $ 29 */ 30 /* 31 * NOTE: All locks are handled by the kbd wrappers. 32 */ 33 34 #include "opt_kbd.h" 35 #include "opt_atkbd.h" 36 37 #include <sys/param.h> 38 #include <sys/systm.h> 39 #include <sys/kernel.h> 40 #include <sys/bus.h> 41 #include <sys/proc.h> 42 #include <sys/malloc.h> 43 #include <sys/thread2.h> 44 45 #ifdef __i386__ 46 #include <machine/md_var.h> 47 #include <machine/psl.h> 48 #include <machine/vm86.h> 49 #include <machine/pc/bios.h> 50 51 #include <vm/vm.h> 52 #include <vm/pmap.h> 53 #endif /* __i386__ */ 54 55 #include <sys/kbio.h> 56 #include "kbdreg.h" 57 #include "atkbdreg.h" 58 #include "atkbdcreg.h" 59 60 #include <bus/isa/isareg.h> 61 62 static timeout_t atkbd_timeout; 63 64 int 65 atkbd_probe_unit(int unit, int ctlr, int irq, int flags) 66 { 67 keyboard_switch_t *sw; 68 int args[2]; 69 int error; 70 71 sw = kbd_get_switch(ATKBD_DRIVER_NAME); 72 if (sw == NULL) { 73 return ENXIO; 74 } 75 76 args[0] = ctlr; 77 args[1] = irq; 78 error = (*sw->probe)(unit, args, flags); 79 80 if (error) 81 return error; 82 return 0; 83 } 84 85 int 86 atkbd_attach_unit(int unit, keyboard_t **kbd, int ctlr, int irq, int flags) 87 { 88 keyboard_switch_t *sw; 89 int args[2]; 90 int error; 91 92 sw = kbd_get_switch(ATKBD_DRIVER_NAME); 93 if (sw == NULL) { 94 return ENXIO; 95 } 96 97 /* reset, initialize and enable the device */ 98 args[0] = ctlr; 99 args[1] = irq; 100 *kbd = NULL; 101 error = (*sw->probe)(unit, args, flags); 102 if (error) { 103 return error; 104 } 105 error = (*sw->init)(unit, kbd, args, flags); 106 if (error) { 107 return error; 108 } 109 (*sw->enable)(*kbd); 110 111 #ifdef KBD_INSTALL_CDEV 112 /* attach a virtual keyboard cdev */ 113 error = kbd_attach(*kbd); 114 if (error) { 115 return error; 116 } 117 #endif 118 119 /* 120 * This is a kludge to compensate for lost keyboard interrupts. 121 * A similar code used to be in syscons. See below. XXX 122 */ 123 atkbd_timeout(*kbd); 124 125 if (bootverbose) 126 (*sw->diag)(*kbd, bootverbose); 127 128 return 0; 129 } 130 131 static void 132 atkbd_timeout(void *arg) 133 { 134 keyboard_t *kbd; 135 136 /* 137 * The original text of the following comments are extracted 138 * from syscons.c (1.287) 139 * 140 * With release 2.1 of the Xaccel server, the keyboard is left 141 * hanging pretty often. Apparently an interrupt from the 142 * keyboard is lost, and I don't know why (yet). 143 * This ugly hack calls the low-level interrupt routine if input 144 * is ready for the keyboard and conveniently hides the problem. XXX 145 * 146 * Try removing anything stuck in the keyboard controller; whether 147 * it's a keyboard scan code or mouse data. The low-level 148 * interrupt routine doesn't read the mouse data directly, 149 * but the keyboard controller driver will, as a side effect. 150 */ 151 /* 152 * And here is bde's original comment about this: 153 * 154 * This is necessary to handle edge triggered interrupts - if we 155 * returned when our IRQ is high due to unserviced input, then there 156 * would be no more keyboard IRQs until the keyboard is reset by 157 * external powers. 158 * 159 * The keyboard apparently unwedges the irq in most cases. 160 */ 161 crit_enter(); 162 kbd = (keyboard_t *)arg; 163 if (kbd_lock(kbd, TRUE)) { 164 /* 165 * We have seen the lock flag is not set. Let's reset 166 * the flag early, otherwise the LED update routine fails 167 * which may want the lock during the interrupt routine. 168 */ 169 kbd_lock(kbd, FALSE); 170 if (kbd_check_char(kbd)) 171 kbd_intr(kbd, NULL); 172 } 173 callout_reset(&kbd->kb_atkbd_timeout_ch, hz / 10, atkbd_timeout, arg); 174 crit_exit(); 175 } 176 177 /* LOW-LEVEL */ 178 179 #include <machine/limits.h> 180 #include <machine/clock.h> 181 182 #define ATKBD_DEFAULT 0 183 184 typedef struct atkbd_state { 185 KBDC kbdc; /* keyboard controller */ 186 int ks_mode; /* input mode (K_XLATE,K_RAW,K_CODE) */ 187 int ks_flags; /* flags */ 188 #define COMPOSE (1 << 0) 189 int ks_polling; 190 int ks_state; /* shift/lock key state */ 191 int ks_accents; /* accent key index (> 0) */ 192 u_int ks_composed_char; /* composed char code (> 0) */ 193 u_char ks_prefix; /* AT scan code prefix */ 194 } atkbd_state_t; 195 196 /* keyboard driver declaration */ 197 static int atkbd_configure(int flags); 198 static kbd_probe_t atkbd_probe; 199 static kbd_init_t atkbd_init; 200 static kbd_term_t atkbd_term; 201 static kbd_intr_t atkbd_intr; 202 static kbd_test_if_t atkbd_test_if; 203 static kbd_enable_t atkbd_enable; 204 static kbd_disable_t atkbd_disable; 205 static kbd_read_t atkbd_read; 206 static kbd_check_t atkbd_check; 207 static kbd_read_char_t atkbd_read_char; 208 static kbd_check_char_t atkbd_check_char; 209 static kbd_ioctl_t atkbd_ioctl; 210 static kbd_lock_t atkbd_lock; 211 static kbd_clear_state_t atkbd_clear_state; 212 static kbd_get_state_t atkbd_get_state; 213 static kbd_set_state_t atkbd_set_state; 214 static kbd_poll_mode_t atkbd_poll; 215 216 keyboard_switch_t atkbdsw = { 217 atkbd_probe, 218 atkbd_init, 219 atkbd_term, 220 atkbd_intr, 221 atkbd_test_if, 222 atkbd_enable, 223 atkbd_disable, 224 atkbd_read, 225 atkbd_check, 226 atkbd_read_char, 227 atkbd_check_char, 228 atkbd_ioctl, 229 atkbd_lock, 230 atkbd_clear_state, 231 atkbd_get_state, 232 atkbd_set_state, 233 genkbd_get_fkeystr, 234 atkbd_poll, 235 genkbd_diag, 236 }; 237 238 KEYBOARD_DRIVER(atkbd, atkbdsw, atkbd_configure); 239 240 /* local functions */ 241 static int get_typematic(keyboard_t *kbd); 242 static int setup_kbd_port(KBDC kbdc, int port, int intr); 243 static int get_kbd_echo(KBDC kbdc); 244 static int probe_keyboard(KBDC kbdc, int flags); 245 static int init_keyboard(KBDC kbdc, int *type, int flags); 246 static int write_kbd(KBDC kbdc, int command, int data); 247 static int get_kbd_id(KBDC kbdc); 248 static int typematic(int delay, int rate); 249 static int typematic_delay(int delay); 250 static int typematic_rate(int rate); 251 252 /* local variables */ 253 254 /* the initial key map, accent map and fkey strings */ 255 #ifdef ATKBD_DFLT_KEYMAP 256 #define KBD_DFLT_KEYMAP 257 #include "atkbdmap.h" 258 #endif 259 #include "kbdtables.h" 260 261 /* structures for the default keyboard */ 262 static keyboard_t default_kbd; 263 static atkbd_state_t default_kbd_state; 264 static keymap_t default_keymap; 265 static accentmap_t default_accentmap; 266 static fkeytab_t default_fkeytab[NUM_FKEYS]; 267 268 /* 269 * The back door to the keyboard driver! 270 * This function is called by the console driver, via the kbdio module, 271 * to tickle keyboard drivers when the low-level console is being initialized. 272 * Almost nothing in the kernel has been initialied yet. Try to probe 273 * keyboards if possible. 274 * NOTE: because of the way the low-level console is initialized, this routine 275 * may be called more than once!! 276 */ 277 static int 278 atkbd_configure(int flags) 279 { 280 keyboard_t *kbd; 281 int arg[2]; 282 int i; 283 284 /* 285 * Probe the keyboard controller, if not present or if the driver 286 * is disabled, unregister the keyboard if any. 287 */ 288 if (atkbdc_configure() != 0 || 289 resource_disabled("atkbd", ATKBD_DEFAULT)) { 290 i = kbd_find_keyboard(ATKBD_DRIVER_NAME, ATKBD_DEFAULT); 291 if (i >= 0) { 292 kbd = kbd_get_keyboard(i); 293 kbd_unregister(kbd); 294 kbd = NULL; /* huh? */ 295 } 296 return 0; 297 } 298 299 /* XXX: a kludge to obtain the device configuration flags */ 300 if (resource_int_value("atkbd", ATKBD_DEFAULT, "flags", &i) == 0) 301 flags |= i; 302 303 /* probe the default keyboard */ 304 arg[0] = -1; 305 arg[1] = -1; 306 kbd = NULL; 307 if (atkbd_probe(ATKBD_DEFAULT, arg, flags)) { 308 return 0; 309 } 310 if (atkbd_init(ATKBD_DEFAULT, &kbd, arg, flags)) { 311 return 0; 312 } 313 314 /* return the number of found keyboards */ 315 return 1; 316 } 317 318 /* low-level functions */ 319 320 /* detect a keyboard */ 321 static int 322 atkbd_probe(int unit, void *arg, int flags) 323 { 324 KBDC kbdc; 325 int *data = (int *)arg; /* data[0]: controller, data[1]: irq */ 326 327 328 if (unit == ATKBD_DEFAULT) { 329 if (KBD_IS_PROBED(&default_kbd)) { 330 return 0; 331 } 332 } 333 334 kbdc = atkbdc_open(data[0]); 335 if (kbdc == NULL) { 336 return ENXIO; 337 } 338 if (probe_keyboard(kbdc, flags)) { 339 if (flags & KB_CONF_FAIL_IF_NO_KBD) { 340 return ENXIO; 341 } 342 } 343 344 return 0; 345 } 346 347 /* reset and initialize the device */ 348 static int 349 atkbd_init(int unit, keyboard_t **kbdp, void *arg, int flags) 350 { 351 keyboard_t *kbd; 352 atkbd_state_t *state; 353 keymap_t *keymap; 354 accentmap_t *accmap; 355 fkeytab_t *fkeymap; 356 int fkeymap_size; 357 int delay[2]; 358 int *data = (int *)arg; /* data[0]: controller, data[1]: irq */ 359 360 /* XXX */ 361 if (unit == ATKBD_DEFAULT) { 362 *kbdp = kbd = &default_kbd; 363 if (KBD_IS_INITIALIZED(kbd) && KBD_IS_CONFIGURED(kbd)) { 364 return 0; 365 } 366 state = &default_kbd_state; 367 keymap = &default_keymap; 368 accmap = &default_accentmap; 369 fkeymap = default_fkeytab; 370 fkeymap_size = NELEM(default_fkeytab); 371 } else if (*kbdp == NULL) { 372 *kbdp = kbd = kmalloc(sizeof(*kbd), M_DEVBUF, M_WAITOK|M_ZERO); 373 state = kmalloc(sizeof(*state), M_DEVBUF, M_WAITOK|M_ZERO); 374 keymap = kmalloc(sizeof(key_map), M_DEVBUF, M_WAITOK); 375 accmap = kmalloc(sizeof(accent_map), M_DEVBUF, M_WAITOK); 376 fkeymap = kmalloc(sizeof(fkey_tab), M_DEVBUF, M_WAITOK); 377 fkeymap_size = NELEM(fkey_tab); 378 } else if (KBD_IS_INITIALIZED(*kbdp) && KBD_IS_CONFIGURED(*kbdp)) { 379 return 0; 380 } else { 381 kbd = *kbdp; 382 state = (atkbd_state_t *)kbd->kb_data; 383 bzero(state, sizeof(*state)); 384 keymap = kbd->kb_keymap; 385 accmap = kbd->kb_accentmap; 386 fkeymap = kbd->kb_fkeytab; 387 fkeymap_size = kbd->kb_fkeytab_size; 388 } 389 390 if (!KBD_IS_PROBED(kbd)) { 391 state->kbdc = atkbdc_open(data[0]); 392 if (state->kbdc == NULL) { 393 return ENXIO; 394 } 395 kbd_init_struct(kbd, ATKBD_DRIVER_NAME, KB_OTHER, unit, flags, 396 KB_PRI_ATKBD, 0, 0); 397 bcopy(&key_map, keymap, sizeof(key_map)); 398 bcopy(&accent_map, accmap, sizeof(accent_map)); 399 bcopy(fkey_tab, fkeymap, 400 imin(fkeymap_size*sizeof(fkeymap[0]), sizeof(fkey_tab))); 401 kbd_set_maps(kbd, keymap, accmap, fkeymap, fkeymap_size); 402 kbd->kb_data = (void *)state; 403 404 if (probe_keyboard(state->kbdc, flags)) { /* shouldn't happen */ 405 if (flags & KB_CONF_FAIL_IF_NO_KBD) { 406 return ENXIO; 407 } 408 } else { 409 KBD_FOUND_DEVICE(kbd); 410 } 411 atkbd_clear_state(kbd); 412 state->ks_mode = K_XLATE; 413 /* 414 * FIXME: set the initial value for lock keys in ks_state 415 * according to the BIOS data? 416 */ 417 KBD_PROBE_DONE(kbd); 418 } 419 if (!KBD_IS_INITIALIZED(kbd) && !(flags & KB_CONF_PROBE_ONLY)) { 420 kbd->kb_config = flags & ~KB_CONF_PROBE_ONLY; 421 if (KBD_HAS_DEVICE(kbd) 422 && init_keyboard(state->kbdc, &kbd->kb_type, kbd->kb_config) 423 && (kbd->kb_config & KB_CONF_FAIL_IF_NO_KBD)) { 424 return ENXIO; 425 } 426 atkbd_ioctl(kbd, KDSETLED, (caddr_t)&state->ks_state); 427 get_typematic(kbd); 428 delay[0] = kbd->kb_delay1; 429 delay[1] = kbd->kb_delay2; 430 atkbd_ioctl(kbd, KDSETREPEAT, (caddr_t)delay); 431 KBD_INIT_DONE(kbd); 432 } 433 if (!KBD_IS_CONFIGURED(kbd)) { 434 if (kbd_register(kbd) < 0) { 435 return ENXIO; 436 } 437 KBD_CONFIG_DONE(kbd); 438 } 439 440 return 0; 441 } 442 443 /* finish using this keyboard */ 444 static int 445 atkbd_term(keyboard_t *kbd) 446 { 447 kbd_unregister(kbd); 448 return 0; 449 } 450 451 /* keyboard interrupt routine */ 452 static int 453 atkbd_intr(keyboard_t *kbd, void *arg) 454 { 455 atkbd_state_t *state; 456 int delay[2]; 457 int c; 458 459 if (KBD_IS_ACTIVE(kbd) && KBD_IS_BUSY(kbd)) { 460 /* let the callback function to process the input */ 461 (*kbd->kb_callback.kc_func)(kbd, KBDIO_KEYINPUT, 462 kbd->kb_callback.kc_arg); 463 } else { 464 /* read and discard the input; no one is waiting for input */ 465 do { 466 c = atkbd_read_char(kbd, FALSE); 467 } while (c != NOKEY); 468 469 if (!KBD_HAS_DEVICE(kbd)) { 470 /* 471 * The keyboard was not detected before; 472 * it must have been reconnected! 473 */ 474 state = (atkbd_state_t *)kbd->kb_data; 475 init_keyboard(state->kbdc, &kbd->kb_type, 476 kbd->kb_config); 477 atkbd_ioctl(kbd, KDSETLED, (caddr_t)&state->ks_state); 478 get_typematic(kbd); 479 delay[0] = kbd->kb_delay1; 480 delay[1] = kbd->kb_delay2; 481 atkbd_ioctl(kbd, KDSETREPEAT, (caddr_t)delay); 482 KBD_FOUND_DEVICE(kbd); 483 } 484 } 485 486 return 0; 487 } 488 489 /* test the interface to the device */ 490 static int 491 atkbd_test_if(keyboard_t *kbd) 492 { 493 int error; 494 495 error = 0; 496 empty_both_buffers(((atkbd_state_t *)kbd->kb_data)->kbdc, 10); 497 crit_enter(); 498 if (!test_controller(((atkbd_state_t *)kbd->kb_data)->kbdc)) 499 error = EIO; 500 else if (test_kbd_port(((atkbd_state_t *)kbd->kb_data)->kbdc) != 0) 501 error = EIO; 502 crit_exit(); 503 504 return error; 505 } 506 507 /* 508 * Enable the access to the device; until this function is called, 509 * the client cannot read from the keyboard. 510 */ 511 static int 512 atkbd_enable(keyboard_t *kbd) 513 { 514 crit_enter(); 515 KBD_ACTIVATE(kbd); 516 crit_exit(); 517 return 0; 518 } 519 520 /* disallow the access to the device */ 521 static int 522 atkbd_disable(keyboard_t *kbd) 523 { 524 crit_enter(); 525 KBD_DEACTIVATE(kbd); 526 crit_exit(); 527 return 0; 528 } 529 530 /* read one byte from the keyboard if it's allowed */ 531 static int 532 atkbd_read(keyboard_t *kbd, int wait) 533 { 534 int c, ret; 535 536 if (wait) 537 c = read_kbd_data(((atkbd_state_t *)kbd->kb_data)->kbdc); 538 else 539 c = read_kbd_data_no_wait(((atkbd_state_t *)kbd->kb_data)->kbdc); 540 if (c != -1) 541 ++kbd->kb_count; 542 543 ret = (KBD_IS_ACTIVE(kbd) ? c : -1); 544 545 return ret; 546 } 547 548 /* check if data is waiting */ 549 static int 550 atkbd_check(keyboard_t *kbd) 551 { 552 int ret; 553 554 555 if (!KBD_IS_ACTIVE(kbd)) { 556 return FALSE; 557 } 558 ret = kbdc_data_ready(((atkbd_state_t *)kbd->kb_data)->kbdc); 559 560 return ret; 561 } 562 563 /* read char from the keyboard */ 564 static u_int 565 atkbd_read_char(keyboard_t *kbd, int wait) 566 { 567 atkbd_state_t *state; 568 u_int action; 569 int scancode; 570 int keycode; 571 572 state = (atkbd_state_t *)kbd->kb_data; 573 next_code: 574 /* do we have a composed char to return? */ 575 if (!(state->ks_flags & COMPOSE) && (state->ks_composed_char > 0)) { 576 action = state->ks_composed_char; 577 state->ks_composed_char = 0; 578 if (action > UCHAR_MAX) { 579 return ERRKEY; 580 } 581 return action; 582 } 583 584 /* see if there is something in the keyboard port */ 585 if (wait) { 586 do { 587 scancode = read_kbd_data(state->kbdc); 588 } while (scancode == -1); 589 } else { 590 scancode = read_kbd_data_no_wait(state->kbdc); 591 if (scancode == -1) { 592 return NOKEY; 593 } 594 } 595 ++kbd->kb_count; 596 597 #if KBDIO_DEBUG >= 10 598 kprintf("atkbd_read_char(): scancode:0x%x\n", scancode); 599 #endif 600 601 /* return the byte as is for the K_RAW mode */ 602 if (state->ks_mode == K_RAW) { 603 return scancode; 604 } 605 606 /* translate the scan code into a keycode */ 607 keycode = scancode & 0x7F; 608 switch (state->ks_prefix) { 609 case 0x00: /* normal scancode */ 610 switch(scancode) { 611 case 0xB8: /* left alt (compose key) released */ 612 if (state->ks_flags & COMPOSE) { 613 state->ks_flags &= ~COMPOSE; 614 if (state->ks_composed_char > UCHAR_MAX) 615 state->ks_composed_char = 0; 616 } 617 break; 618 case 0x38: /* left alt (compose key) pressed */ 619 if (!(state->ks_flags & COMPOSE)) { 620 state->ks_flags |= COMPOSE; 621 state->ks_composed_char = 0; 622 } 623 break; 624 case 0xE0: 625 case 0xE1: 626 state->ks_prefix = scancode; 627 goto next_code; 628 } 629 break; 630 case 0xE0: /* 0xE0 prefix */ 631 state->ks_prefix = 0; 632 switch (keycode) { 633 case 0x1C: /* right enter key */ 634 keycode = 0x59; 635 break; 636 case 0x1D: /* right ctrl key */ 637 keycode = 0x5A; 638 break; 639 case 0x35: /* keypad divide key */ 640 keycode = 0x5B; 641 break; 642 case 0x37: /* print scrn key */ 643 keycode = 0x5C; 644 break; 645 case 0x38: /* right alt key (alt gr) */ 646 keycode = 0x5D; 647 break; 648 case 0x46: /* ctrl-pause/break on AT 101 (see below) */ 649 keycode = 0x68; 650 break; 651 case 0x47: /* grey home key */ 652 keycode = 0x5E; 653 break; 654 case 0x48: /* grey up arrow key */ 655 keycode = 0x5F; 656 break; 657 case 0x49: /* grey page up key */ 658 keycode = 0x60; 659 break; 660 case 0x4B: /* grey left arrow key */ 661 keycode = 0x61; 662 break; 663 case 0x4D: /* grey right arrow key */ 664 keycode = 0x62; 665 break; 666 case 0x4F: /* grey end key */ 667 keycode = 0x63; 668 break; 669 case 0x50: /* grey down arrow key */ 670 keycode = 0x64; 671 break; 672 case 0x51: /* grey page down key */ 673 keycode = 0x65; 674 break; 675 case 0x52: /* grey insert key */ 676 keycode = 0x66; 677 break; 678 case 0x53: /* grey delete key */ 679 keycode = 0x67; 680 break; 681 /* the following 3 are only used on the MS "Natural" keyboard */ 682 case 0x5b: /* left Window key */ 683 keycode = 0x69; 684 break; 685 case 0x5c: /* right Window key */ 686 keycode = 0x6a; 687 break; 688 case 0x5d: /* menu key */ 689 keycode = 0x6b; 690 break; 691 default: /* ignore everything else */ 692 goto next_code; 693 } 694 break; 695 case 0xE1: /* 0xE1 prefix */ 696 /* 697 * The pause/break key on the 101 keyboard produces: 698 * E1-1D-45 E1-9D-C5 699 * Ctrl-pause/break produces: 700 * E0-46 E0-C6 (See above.) 701 */ 702 state->ks_prefix = 0; 703 if (keycode == 0x1D) 704 state->ks_prefix = 0x1D; 705 goto next_code; 706 /* NOT REACHED */ 707 case 0x1D: /* pause / break */ 708 state->ks_prefix = 0; 709 if (keycode != 0x45) 710 goto next_code; 711 keycode = 0x68; 712 break; 713 } 714 715 if (kbd->kb_type == KB_84) { 716 switch (keycode) { 717 case 0x37: /* *(numpad)/print screen */ 718 if (state->ks_flags & SHIFTS) 719 keycode = 0x5c; /* print screen */ 720 break; 721 case 0x45: /* num lock/pause */ 722 if (state->ks_flags & CTLS) 723 keycode = 0x68; /* pause */ 724 break; 725 case 0x46: /* scroll lock/break */ 726 if (state->ks_flags & CTLS) 727 keycode = 0x6c; /* break */ 728 break; 729 } 730 } else if (kbd->kb_type == KB_101) { 731 switch (keycode) { 732 case 0x5c: /* print screen */ 733 if (state->ks_flags & ALTS) 734 keycode = 0x54; /* sysrq */ 735 break; 736 case 0x68: /* pause/break */ 737 if (state->ks_flags & CTLS) 738 keycode = 0x6c; /* break */ 739 break; 740 } 741 } 742 743 /* return the key code in the K_CODE mode */ 744 if (state->ks_mode == K_CODE) { 745 return (keycode | (scancode & 0x80)); 746 } 747 748 /* compose a character code */ 749 if (state->ks_flags & COMPOSE) { 750 switch (keycode | (scancode & 0x80)) { 751 /* key pressed, process it */ 752 case 0x47: case 0x48: case 0x49: /* keypad 7,8,9 */ 753 state->ks_composed_char *= 10; 754 state->ks_composed_char += keycode - 0x40; 755 if (state->ks_composed_char > UCHAR_MAX) 756 return ERRKEY; 757 goto next_code; 758 case 0x4B: case 0x4C: case 0x4D: /* keypad 4,5,6 */ 759 state->ks_composed_char *= 10; 760 state->ks_composed_char += keycode - 0x47; 761 if (state->ks_composed_char > UCHAR_MAX) 762 return ERRKEY; 763 goto next_code; 764 case 0x4F: case 0x50: case 0x51: /* keypad 1,2,3 */ 765 state->ks_composed_char *= 10; 766 state->ks_composed_char += keycode - 0x4E; 767 if (state->ks_composed_char > UCHAR_MAX) 768 return ERRKEY; 769 goto next_code; 770 case 0x52: /* keypad 0 */ 771 state->ks_composed_char *= 10; 772 if (state->ks_composed_char > UCHAR_MAX) 773 return ERRKEY; 774 goto next_code; 775 776 /* key released, no interest here */ 777 case 0xC7: case 0xC8: case 0xC9: /* keypad 7,8,9 */ 778 case 0xCB: case 0xCC: case 0xCD: /* keypad 4,5,6 */ 779 case 0xCF: case 0xD0: case 0xD1: /* keypad 1,2,3 */ 780 case 0xD2: /* keypad 0 */ 781 goto next_code; 782 783 case 0x38: /* left alt key */ 784 break; 785 786 default: 787 if (state->ks_composed_char > 0) { 788 state->ks_flags &= ~COMPOSE; 789 state->ks_composed_char = 0; 790 return ERRKEY; 791 } 792 break; 793 } 794 } 795 796 /* keycode to key action */ 797 action = genkbd_keyaction(kbd, keycode, scancode & 0x80, 798 &state->ks_state, &state->ks_accents); 799 if (action == NOKEY) { 800 goto next_code; 801 } else { 802 return action; 803 } 804 } 805 806 /* check if char is waiting */ 807 static int 808 atkbd_check_char(keyboard_t *kbd) 809 { 810 atkbd_state_t *state; 811 int ret; 812 813 if (!KBD_IS_ACTIVE(kbd)) { 814 return FALSE; 815 } 816 state = (atkbd_state_t *)kbd->kb_data; 817 if (!(state->ks_flags & COMPOSE) && (state->ks_composed_char > 0)) { 818 return TRUE; 819 } 820 ret = kbdc_data_ready(state->kbdc); 821 return ret; 822 } 823 824 /* some useful control functions */ 825 static int 826 atkbd_ioctl(keyboard_t *kbd, u_long cmd, caddr_t arg) 827 { 828 /* trasnlate LED_XXX bits into the device specific bits */ 829 static u_char ledmap[8] = { 830 0, 4, 2, 6, 1, 5, 3, 7, 831 }; 832 atkbd_state_t *state = kbd->kb_data; 833 int error; 834 int i; 835 836 crit_enter(); 837 838 switch (cmd) { 839 840 case KDGKBMODE: /* get keyboard mode */ 841 *(int *)arg = state->ks_mode; 842 break; 843 case KDSKBMODE: /* set keyboard mode */ 844 switch (*(int *)arg) { 845 case K_XLATE: 846 if (state->ks_mode != K_XLATE) { 847 /* make lock key state and LED state match */ 848 state->ks_state &= ~LOCK_MASK; 849 state->ks_state |= KBD_LED_VAL(kbd); 850 } 851 /* FALL THROUGH */ 852 case K_RAW: 853 case K_CODE: 854 if (state->ks_mode != *(int *)arg) { 855 atkbd_clear_state(kbd); 856 state->ks_mode = *(int *)arg; 857 } 858 break; 859 default: 860 crit_exit(); 861 return EINVAL; 862 } 863 break; 864 865 case KDGETLED: /* get keyboard LED */ 866 *(int *)arg = KBD_LED_VAL(kbd); 867 break; 868 case KDSETLED: /* set keyboard LED */ 869 /* NOTE: lock key state in ks_state won't be changed */ 870 if (*(int *)arg & ~LOCK_MASK) { 871 crit_exit(); 872 return EINVAL; 873 } 874 i = *(int *)arg; 875 /* replace CAPS LED with ALTGR LED for ALTGR keyboards */ 876 if (state->ks_mode == K_XLATE && 877 kbd->kb_keymap->n_keys > ALTGR_OFFSET) { 878 if (i & ALKED) 879 i |= CLKED; 880 else 881 i &= ~CLKED; 882 } 883 if (KBD_HAS_DEVICE(kbd)) { 884 error = write_kbd(state->kbdc, KBDC_SET_LEDS, 885 ledmap[i & LED_MASK]); 886 if (error) { 887 crit_exit(); 888 return error; 889 } 890 } 891 KBD_LED_VAL(kbd) = *(int *)arg; 892 break; 893 894 case KDGKBSTATE: /* get lock key state */ 895 *(int *)arg = state->ks_state & LOCK_MASK; 896 break; 897 case KDSKBSTATE: /* set lock key state */ 898 if (*(int *)arg & ~LOCK_MASK) { 899 crit_exit(); 900 return EINVAL; 901 } 902 state->ks_state &= ~LOCK_MASK; 903 state->ks_state |= *(int *)arg; 904 crit_exit(); 905 /* set LEDs and quit */ 906 return atkbd_ioctl(kbd, KDSETLED, arg); 907 908 case KDSETREPEAT: /* set keyboard repeat rate (new interface) */ 909 crit_exit(); 910 if (!KBD_HAS_DEVICE(kbd)) { 911 return 0; 912 } 913 i = typematic(((int *)arg)[0], ((int *)arg)[1]); 914 error = write_kbd(state->kbdc, KBDC_SET_TYPEMATIC, i); 915 if (error == 0) { 916 kbd->kb_delay1 = typematic_delay(i); 917 kbd->kb_delay2 = typematic_rate(i); 918 } 919 return error; 920 921 case KDSETRAD: /* set keyboard repeat rate (old interface) */ 922 crit_exit(); 923 if (!KBD_HAS_DEVICE(kbd)) { 924 return 0; 925 } 926 error = write_kbd(state->kbdc, KBDC_SET_TYPEMATIC, *(int *)arg); 927 if (error == 0) { 928 kbd->kb_delay1 = typematic_delay(*(int *)arg); 929 kbd->kb_delay2 = typematic_rate(*(int *)arg); 930 } 931 return error; 932 933 case PIO_KEYMAP: /* set keyboard translation table */ 934 case PIO_KEYMAPENT: /* set keyboard translation table entry */ 935 case PIO_DEADKEYMAP: /* set accent key translation table */ 936 state->ks_accents = 0; 937 /* FALL THROUGH */ 938 default: 939 crit_exit(); 940 return genkbd_commonioctl(kbd, cmd, arg); 941 } 942 943 crit_exit(); 944 return 0; 945 } 946 947 /* lock the access to the keyboard */ 948 static int 949 atkbd_lock(keyboard_t *kbd, int lock) 950 { 951 return kbdc_lock(((atkbd_state_t *)kbd->kb_data)->kbdc, lock); 952 } 953 954 /* clear the internal state of the keyboard */ 955 static void 956 atkbd_clear_state(keyboard_t *kbd) 957 { 958 atkbd_state_t *state; 959 960 state = (atkbd_state_t *)kbd->kb_data; 961 state->ks_flags = 0; 962 state->ks_polling = 0; 963 state->ks_state &= LOCK_MASK; /* preserve locking key state */ 964 state->ks_accents = 0; 965 state->ks_composed_char = 0; 966 #if 0 967 state->ks_prefix = 0; /* XXX */ 968 #endif 969 } 970 971 /* save the internal state */ 972 static int 973 atkbd_get_state(keyboard_t *kbd, void *buf, size_t len) 974 { 975 if (len == 0) 976 return sizeof(atkbd_state_t); 977 if (len < sizeof(atkbd_state_t)) 978 return -1; 979 980 bcopy(kbd->kb_data, buf, sizeof(atkbd_state_t)); 981 return 0; 982 } 983 984 /* set the internal state */ 985 static int 986 atkbd_set_state(keyboard_t *kbd, void *buf, size_t len) 987 { 988 if (len < sizeof(atkbd_state_t)) 989 return ENOMEM; 990 if (((atkbd_state_t *)kbd->kb_data)->kbdc 991 != ((atkbd_state_t *)buf)->kbdc) 992 return ENOMEM; 993 bcopy(buf, kbd->kb_data, sizeof(atkbd_state_t)); 994 return 0; 995 } 996 997 static int 998 atkbd_poll(keyboard_t *kbd, int on) 999 { 1000 atkbd_state_t *state; 1001 1002 state = (atkbd_state_t *)kbd->kb_data; 1003 crit_enter(); 1004 if (on) 1005 state->ks_polling = 1; 1006 else 1007 state->ks_polling = 0; 1008 crit_exit(); 1009 return 0; 1010 } 1011 1012 /* local functions */ 1013 1014 static int 1015 get_typematic(keyboard_t *kbd) 1016 { 1017 #ifdef __i386__ 1018 /* 1019 * Only some systems allow us to retrieve the keyboard repeat 1020 * rate previously set via the BIOS... 1021 */ 1022 struct vm86frame vmf; 1023 u_int32_t p; 1024 1025 bzero(&vmf, sizeof(vmf)); 1026 vmf.vmf_ax = 0xc000; 1027 vm86_intcall(0x15, &vmf); 1028 if ((vmf.vmf_eflags & PSL_C) || vmf.vmf_ah) 1029 return ENODEV; 1030 p = BIOS_PADDRTOVADDR(((u_int32_t)vmf.vmf_es << 4) + vmf.vmf_bx); 1031 if ((readb(p + 6) & 0x40) == 0) /* int 16, function 0x09 supported? */ 1032 return ENODEV; 1033 vmf.vmf_ax = 0x0900; 1034 vm86_intcall(0x16, &vmf); 1035 if ((vmf.vmf_al & 0x08) == 0) /* int 16, function 0x0306 supported? */ 1036 return ENODEV; 1037 vmf.vmf_ax = 0x0306; 1038 vm86_intcall(0x16, &vmf); 1039 kbd->kb_delay1 = typematic_delay(vmf.vmf_bh << 5); 1040 kbd->kb_delay2 = typematic_rate(vmf.vmf_bl); 1041 return 0; 1042 #else 1043 return ENODEV; 1044 #endif /* __i386__ */ 1045 } 1046 1047 static int 1048 setup_kbd_port(KBDC kbdc, int port, int intr) 1049 { 1050 if (!set_controller_command_byte(kbdc, 1051 KBD_KBD_CONTROL_BITS, 1052 ((port) ? KBD_ENABLE_KBD_PORT : KBD_DISABLE_KBD_PORT) 1053 | ((intr) ? KBD_ENABLE_KBD_INT : KBD_DISABLE_KBD_INT))) 1054 return 1; 1055 return 0; 1056 } 1057 1058 static int 1059 get_kbd_echo(KBDC kbdc) 1060 { 1061 /* enable the keyboard port, but disable the keyboard intr. */ 1062 if (setup_kbd_port(kbdc, TRUE, FALSE)) 1063 /* CONTROLLER ERROR: there is very little we can do... */ 1064 return ENXIO; 1065 1066 /* see if something is present */ 1067 write_kbd_command(kbdc, KBDC_ECHO); 1068 if (read_kbd_data(kbdc) != KBD_ECHO) { 1069 empty_both_buffers(kbdc, 10); 1070 test_controller(kbdc); 1071 test_kbd_port(kbdc); 1072 return ENXIO; 1073 } 1074 1075 /* enable the keyboard port and intr. */ 1076 if (setup_kbd_port(kbdc, TRUE, TRUE)) { 1077 /* 1078 * CONTROLLER ERROR 1079 * This is serious; the keyboard intr is left disabled! 1080 */ 1081 return ENXIO; 1082 } 1083 1084 return 0; 1085 } 1086 1087 static int 1088 probe_keyboard(KBDC kbdc, int flags) 1089 { 1090 /* 1091 * Don't try to print anything in this function. The low-level 1092 * console may not have been initialized yet... 1093 */ 1094 int err; 1095 int c; 1096 int m; 1097 1098 if (!kbdc_lock(kbdc, TRUE)) { 1099 /* driver error? */ 1100 return ENXIO; 1101 } 1102 1103 /* temporarily block data transmission from the keyboard */ 1104 write_controller_command(kbdc, KBDC_DISABLE_KBD_PORT); 1105 1106 /* flush any noise in the buffer */ 1107 empty_both_buffers(kbdc, 100); 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 1131 /* 1132 * Even if the keyboard doesn't seem to be present (err != 0), 1133 * we shall enable the keyboard port and interrupt so that 1134 * the driver will be operable when the keyboard is attached 1135 * to the system later. It is NOT recommended to hot-plug 1136 * the AT keyboard, but many people do so... 1137 */ 1138 kbdc_set_device_mask(kbdc, m | KBD_KBD_CONTROL_BITS); 1139 setup_kbd_port(kbdc, TRUE, TRUE); 1140 #if 0 1141 if (err == 0) { 1142 kbdc_set_device_mask(kbdc, m | KBD_KBD_CONTROL_BITS); 1143 } else { 1144 /* try to restore the command byte as before */ 1145 set_controller_command_byte(kbdc, 0xff, c); 1146 kbdc_set_device_mask(kbdc, m); 1147 } 1148 #endif 1149 1150 kbdc_lock(kbdc, FALSE); 1151 return err; 1152 } 1153 1154 static int 1155 init_keyboard(KBDC kbdc, int *type, int flags) 1156 { 1157 int codeset; 1158 int id; 1159 int c; 1160 1161 if (!kbdc_lock(kbdc, TRUE)) { 1162 /* driver error? */ 1163 return EIO; 1164 } 1165 1166 /* temporarily block data transmission from the keyboard */ 1167 write_controller_command(kbdc, KBDC_DISABLE_KBD_PORT); 1168 1169 /* save the current controller command byte */ 1170 empty_both_buffers(kbdc, 200); 1171 c = get_controller_command_byte(kbdc); 1172 if (c == -1) { 1173 /* CONTROLLER ERROR */ 1174 kbdc_lock(kbdc, FALSE); 1175 kprintf("atkbd: unable to get the current command byte value.\n"); 1176 return EIO; 1177 } 1178 if (bootverbose) 1179 kprintf("atkbd: the current kbd controller command byte %04x\n", 1180 c); 1181 #if 0 1182 /* override the keyboard lock switch */ 1183 c |= KBD_OVERRIDE_KBD_LOCK; 1184 #endif 1185 1186 /* enable the keyboard port, but disable the keyboard intr. */ 1187 if (setup_kbd_port(kbdc, TRUE, FALSE)) { 1188 /* CONTROLLER ERROR: there is very little we can do... */ 1189 kprintf("atkbd: unable to set the command byte.\n"); 1190 kbdc_lock(kbdc, FALSE); 1191 return EIO; 1192 } 1193 1194 /* 1195 * Check if we have an XT keyboard before we attempt to reset it. 1196 * The procedure assumes that the keyboard and the controller have 1197 * been set up properly by BIOS and have not been messed up 1198 * during the boot process. 1199 */ 1200 codeset = -1; 1201 if (flags & KB_CONF_ALT_SCANCODESET) 1202 /* the user says there is a XT keyboard */ 1203 codeset = 1; 1204 #ifdef KBD_DETECT_XT_KEYBOARD 1205 else if ((c & KBD_TRANSLATION) == 0) { 1206 /* SET_SCANCODE_SET is not always supported; ignore error */ 1207 if (send_kbd_command_and_data(kbdc, KBDC_SET_SCANCODE_SET, 0) 1208 == KBD_ACK) 1209 codeset = read_kbd_data(kbdc); 1210 } 1211 if (bootverbose) 1212 kprintf("atkbd: scancode set %d\n", codeset); 1213 #endif /* KBD_DETECT_XT_KEYBOARD */ 1214 1215 *type = KB_OTHER; 1216 id = get_kbd_id(kbdc); 1217 switch(id) { 1218 case 0x41ab: /* 101/102/... Enhanced */ 1219 case 0x83ab: /* ditto */ 1220 case 0x54ab: /* SpaceSaver */ 1221 case 0x84ab: /* ditto */ 1222 #if 0 1223 case 0x90ab: /* 'G' */ 1224 case 0x91ab: /* 'P' */ 1225 case 0x92ab: /* 'A' */ 1226 #endif 1227 *type = KB_101; 1228 break; 1229 case -1: /* AT 84 keyboard doesn't return ID */ 1230 *type = KB_84; 1231 break; 1232 default: 1233 break; 1234 } 1235 if (bootverbose) 1236 kprintf("atkbd: keyboard ID 0x%x (%d)\n", id, *type); 1237 1238 /* reset keyboard hardware */ 1239 if (!(flags & KB_CONF_NO_RESET) && !reset_kbd(kbdc)) { 1240 /* 1241 * KEYBOARD ERROR 1242 * Keyboard reset may fail either because the keyboard 1243 * doen't exist, or because the keyboard doesn't pass 1244 * the self-test, or the keyboard controller on the 1245 * motherboard and the keyboard somehow fail to shake hands. 1246 * It is just possible, particularly in the last case, 1247 * that the keyoard controller may be left in a hung state. 1248 * test_controller() and test_kbd_port() appear to bring 1249 * the keyboard controller back (I don't know why and how, 1250 * though.) 1251 */ 1252 empty_both_buffers(kbdc, 10); 1253 test_controller(kbdc); 1254 test_kbd_port(kbdc); 1255 /* 1256 * We could disable the keyboard port and interrupt... but, 1257 * the keyboard may still exist (see above). 1258 */ 1259 set_controller_command_byte(kbdc, 0xff, c); 1260 kbdc_lock(kbdc, FALSE); 1261 if (bootverbose) 1262 kprintf("atkbd: failed to reset the keyboard.\n"); 1263 return EIO; 1264 } 1265 1266 /* 1267 * Allow us to set the XT_KEYBD flag in UserConfig so that keyboards 1268 * such as those on the IBM ThinkPad laptop computers can be used 1269 * with the standard console driver. 1270 */ 1271 if (codeset == 1) { 1272 if (send_kbd_command_and_data(kbdc, 1273 KBDC_SET_SCANCODE_SET, codeset) == KBD_ACK) { 1274 /* XT kbd doesn't need scan code translation */ 1275 c &= ~KBD_TRANSLATION; 1276 } else { 1277 /* 1278 * KEYBOARD ERROR 1279 * The XT kbd isn't usable unless the proper scan 1280 * code set is selected. 1281 */ 1282 set_controller_command_byte(kbdc, 0xff, c); 1283 kbdc_lock(kbdc, FALSE); 1284 kprintf("atkbd: unable to set the XT keyboard mode.\n"); 1285 return EIO; 1286 } 1287 } 1288 1289 /* enable the keyboard port and intr. */ 1290 if (!set_controller_command_byte(kbdc, 1291 KBD_KBD_CONTROL_BITS | KBD_TRANSLATION | KBD_OVERRIDE_KBD_LOCK, 1292 (c & (KBD_TRANSLATION | KBD_OVERRIDE_KBD_LOCK)) 1293 | KBD_ENABLE_KBD_PORT | KBD_ENABLE_KBD_INT)) { 1294 /* 1295 * CONTROLLER ERROR 1296 * This is serious; we are left with the disabled 1297 * keyboard intr. 1298 */ 1299 set_controller_command_byte(kbdc, 0xff, c); 1300 kbdc_lock(kbdc, FALSE); 1301 kprintf("atkbd: unable to enable the keyboard port and intr.\n"); 1302 return EIO; 1303 } 1304 1305 kbdc_lock(kbdc, FALSE); 1306 return 0; 1307 } 1308 1309 static int 1310 write_kbd(KBDC kbdc, int command, int data) 1311 { 1312 /* prevent the timeout routine from polling the keyboard */ 1313 if (!kbdc_lock(kbdc, TRUE)) 1314 return EBUSY; 1315 1316 /* disable the keyboard and mouse interrupt */ 1317 crit_enter(); 1318 #if 0 1319 c = get_controller_command_byte(kbdc); 1320 if ((c == -1) 1321 || !set_controller_command_byte(kbdc, 1322 kbdc_get_device_mask(kbdc), 1323 KBD_DISABLE_KBD_PORT | KBD_DISABLE_KBD_INT 1324 | KBD_DISABLE_AUX_PORT | KBD_DISABLE_AUX_INT)) { 1325 /* CONTROLLER ERROR */ 1326 kbdc_lock(kbdc, FALSE); 1327 crit_exit(); 1328 return EIO; 1329 } 1330 /* 1331 * Now that the keyboard controller is told not to generate 1332 * the keyboard and mouse interrupts, call `splx()' to allow 1333 * the other tty interrupts. The clock interrupt may also occur, 1334 * but the timeout routine (`scrn_timer()') will be blocked 1335 * by the lock flag set via `kbdc_lock()' 1336 */ 1337 crit_exit(); 1338 #endif 1339 1340 if (send_kbd_command_and_data(kbdc, command, data) != KBD_ACK) 1341 send_kbd_command(kbdc, KBDC_ENABLE_KBD); 1342 1343 #if 0 1344 /* restore the interrupts */ 1345 if (!set_controller_command_byte(kbdc, 1346 kbdc_get_device_mask(kbdc), 1347 c & (KBD_KBD_CONTROL_BITS | KBD_AUX_CONTROL_BITS))) { 1348 /* CONTROLLER ERROR */ 1349 } 1350 #else 1351 crit_exit(); 1352 #endif 1353 kbdc_lock(kbdc, FALSE); 1354 1355 return 0; 1356 } 1357 1358 static int 1359 get_kbd_id(KBDC kbdc) 1360 { 1361 int id1, id2; 1362 1363 empty_both_buffers(kbdc, 10); 1364 id1 = id2 = -1; 1365 if (send_kbd_command(kbdc, KBDC_SEND_DEV_ID) != KBD_ACK) 1366 return -1; 1367 1368 DELAY(10000); /* 10 msec delay */ 1369 id1 = read_kbd_data(kbdc); 1370 if (id1 != -1) 1371 id2 = read_kbd_data(kbdc); 1372 1373 if ((id1 == -1) || (id2 == -1)) { 1374 empty_both_buffers(kbdc, 10); 1375 test_controller(kbdc); 1376 test_kbd_port(kbdc); 1377 return -1; 1378 } 1379 return ((id2 << 8) | id1); 1380 } 1381 1382 static int delays[] = { 250, 500, 750, 1000 }; 1383 static int rates[] = { 34, 38, 42, 46, 50, 55, 59, 63, 1384 68, 76, 84, 92, 100, 110, 118, 126, 1385 136, 152, 168, 184, 200, 220, 236, 252, 1386 272, 304, 336, 368, 400, 440, 472, 504 }; 1387 1388 static int 1389 typematic_delay(int i) 1390 { 1391 return delays[(i >> 5) & 3]; 1392 } 1393 1394 static int 1395 typematic_rate(int i) 1396 { 1397 return rates[i & 0x1f]; 1398 } 1399 1400 static int 1401 typematic(int delay, int rate) 1402 { 1403 int value; 1404 int i; 1405 1406 for (i = NELEM(delays) - 1; i > 0; --i) { 1407 if (delay >= delays[i]) 1408 break; 1409 } 1410 value = i << 5; 1411 for (i = NELEM(rates) - 1; i > 0; --i) { 1412 if (rate >= rates[i]) 1413 break; 1414 } 1415 value |= i; 1416 return value; 1417 } 1418