1 /*- 2 * Copyright (c) 1999 Kazutaka YOKOTA <yokota@zodiac.mech.utsunomiya-u.ac.jp> 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer as 10 * the first lines of this file unmodified. 11 * 2. Redistributions in binary form must reproduce the above copyright 12 * notice, this list of conditions and the following disclaimer in the 13 * documentation and/or other materials provided with the distribution. 14 * 15 * THIS SOFTWARE IS PROVIDED BY THE AUTHORS ``AS IS'' AND ANY EXPRESS OR 16 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 17 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 18 * IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR ANY DIRECT, INDIRECT, 19 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 20 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 21 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 22 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 23 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 24 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 25 * 26 * $FreeBSD: src/sys/dev/kbd/atkbd.c,v 1.25.2.4 2002/04/08 19:21:38 asmodai Exp $ 27 * $DragonFly: src/sys/dev/misc/kbd/atkbd.c,v 1.11 2006/09/05 00:55:38 dillon Exp $ 28 */ 29 30 #include "opt_kbd.h" 31 #include "opt_atkbd.h" 32 33 #include <sys/param.h> 34 #include <sys/systm.h> 35 #include <sys/kernel.h> 36 #include <sys/bus.h> 37 #include <sys/proc.h> 38 #include <sys/malloc.h> 39 #include <sys/thread2.h> 40 41 #include <machine/bus.h> 42 #include <machine/resource.h> 43 44 #ifdef __i386__ 45 #include <machine/md_var.h> 46 #include <machine/psl.h> 47 #include <machine/vm86.h> 48 #include <machine/pc/bios.h> 49 50 #include <vm/vm.h> 51 #include <vm/pmap.h> 52 #endif /* __i386__ */ 53 54 #include <sys/kbio.h> 55 #include "kbdreg.h" 56 #include "atkbdreg.h" 57 #include "atkbdcreg.h" 58 59 #include <bus/isa/isareg.h> 60 61 static timeout_t atkbd_timeout; 62 63 int 64 atkbd_probe_unit(int unit, int ctlr, int irq, int flags) 65 { 66 keyboard_switch_t *sw; 67 int args[2]; 68 int error; 69 70 sw = kbd_get_switch(ATKBD_DRIVER_NAME); 71 if (sw == NULL) 72 return ENXIO; 73 74 args[0] = ctlr; 75 args[1] = irq; 76 error = (*sw->probe)(unit, args, flags); 77 if (error) 78 return error; 79 return 0; 80 } 81 82 int 83 atkbd_attach_unit(int unit, keyboard_t **kbd, int ctlr, int irq, int flags) 84 { 85 keyboard_switch_t *sw; 86 int args[2]; 87 int error; 88 89 sw = kbd_get_switch(ATKBD_DRIVER_NAME); 90 if (sw == NULL) 91 return ENXIO; 92 93 /* reset, initialize and enable the device */ 94 args[0] = ctlr; 95 args[1] = irq; 96 *kbd = NULL; 97 error = (*sw->probe)(unit, args, flags); 98 if (error) 99 return error; 100 error = (*sw->init)(unit, kbd, args, flags); 101 if (error) 102 return error; 103 (*sw->enable)(*kbd); 104 105 #ifdef KBD_INSTALL_CDEV 106 /* attach a virtual keyboard cdev */ 107 error = kbd_attach(*kbd); 108 if (error) 109 return error; 110 #endif 111 112 /* 113 * This is a kludge to compensate for lost keyboard interrupts. 114 * A similar code used to be in syscons. See below. XXX 115 */ 116 atkbd_timeout(*kbd); 117 118 if (bootverbose) 119 (*sw->diag)(*kbd, bootverbose); 120 return 0; 121 } 122 123 static void 124 atkbd_timeout(void *arg) 125 { 126 keyboard_t *kbd; 127 128 /* 129 * The original text of the following comments are extracted 130 * from syscons.c (1.287) 131 * 132 * With release 2.1 of the Xaccel server, the keyboard is left 133 * hanging pretty often. Apparently an interrupt from the 134 * keyboard is lost, and I don't know why (yet). 135 * This ugly hack calls the low-level interrupt routine if input 136 * is ready for the keyboard and conveniently hides the problem. XXX 137 * 138 * Try removing anything stuck in the keyboard controller; whether 139 * it's a keyboard scan code or mouse data. The low-level 140 * interrupt routine doesn't read the mouse data directly, 141 * but the keyboard controller driver will, as a side effect. 142 */ 143 /* 144 * And here is bde's original comment about this: 145 * 146 * This is necessary to handle edge triggered interrupts - if we 147 * returned when our IRQ is high due to unserviced input, then there 148 * would be no more keyboard IRQs until the keyboard is reset by 149 * external powers. 150 * 151 * The keyboard apparently unwedges the irq in most cases. 152 */ 153 crit_enter(); 154 kbd = (keyboard_t *)arg; 155 if ((*kbdsw[kbd->kb_index]->lock)(kbd, TRUE)) { 156 /* 157 * We have seen the lock flag is not set. Let's reset 158 * the flag early, otherwise the LED update routine fails 159 * which may want the lock during the interrupt routine. 160 */ 161 (*kbdsw[kbd->kb_index]->lock)(kbd, FALSE); 162 if ((*kbdsw[kbd->kb_index]->check_char)(kbd)) 163 (*kbdsw[kbd->kb_index]->intr)(kbd, NULL); 164 } 165 callout_reset(&kbd->kb_atkbd_timeout_ch, hz / 10, atkbd_timeout, arg); 166 crit_exit(); 167 } 168 169 /* LOW-LEVEL */ 170 171 #include <machine/limits.h> 172 #include <machine/clock.h> 173 174 #define ATKBD_DEFAULT 0 175 176 typedef struct atkbd_state { 177 KBDC kbdc; /* keyboard controller */ 178 int ks_mode; /* input mode (K_XLATE,K_RAW,K_CODE) */ 179 int ks_flags; /* flags */ 180 #define COMPOSE (1 << 0) 181 int ks_polling; 182 int ks_state; /* shift/lock key state */ 183 int ks_accents; /* accent key index (> 0) */ 184 u_int ks_composed_char; /* composed char code (> 0) */ 185 u_char ks_prefix; /* AT scan code prefix */ 186 } atkbd_state_t; 187 188 /* keyboard driver declaration */ 189 static int atkbd_configure(int flags); 190 static kbd_probe_t atkbd_probe; 191 static kbd_init_t atkbd_init; 192 static kbd_term_t atkbd_term; 193 static kbd_intr_t atkbd_intr; 194 static kbd_test_if_t atkbd_test_if; 195 static kbd_enable_t atkbd_enable; 196 static kbd_disable_t atkbd_disable; 197 static kbd_read_t atkbd_read; 198 static kbd_check_t atkbd_check; 199 static kbd_read_char_t atkbd_read_char; 200 static kbd_check_char_t atkbd_check_char; 201 static kbd_ioctl_t atkbd_ioctl; 202 static kbd_lock_t atkbd_lock; 203 static kbd_clear_state_t atkbd_clear_state; 204 static kbd_get_state_t atkbd_get_state; 205 static kbd_set_state_t atkbd_set_state; 206 static kbd_poll_mode_t atkbd_poll; 207 208 keyboard_switch_t atkbdsw = { 209 atkbd_probe, 210 atkbd_init, 211 atkbd_term, 212 atkbd_intr, 213 atkbd_test_if, 214 atkbd_enable, 215 atkbd_disable, 216 atkbd_read, 217 atkbd_check, 218 atkbd_read_char, 219 atkbd_check_char, 220 atkbd_ioctl, 221 atkbd_lock, 222 atkbd_clear_state, 223 atkbd_get_state, 224 atkbd_set_state, 225 genkbd_get_fkeystr, 226 atkbd_poll, 227 genkbd_diag, 228 }; 229 230 KEYBOARD_DRIVER(atkbd, atkbdsw, atkbd_configure); 231 232 /* local functions */ 233 static int get_typematic(keyboard_t *kbd); 234 static int setup_kbd_port(KBDC kbdc, int port, int intr); 235 static int get_kbd_echo(KBDC kbdc); 236 static int probe_keyboard(KBDC kbdc, int flags); 237 static int init_keyboard(KBDC kbdc, int *type, int flags); 238 static int write_kbd(KBDC kbdc, int command, int data); 239 static int get_kbd_id(KBDC kbdc); 240 static int typematic(int delay, int rate); 241 static int typematic_delay(int delay); 242 static int typematic_rate(int rate); 243 244 /* local variables */ 245 246 /* the initial key map, accent map and fkey strings */ 247 #ifdef ATKBD_DFLT_KEYMAP 248 #define KBD_DFLT_KEYMAP 249 #include "atkbdmap.h" 250 #endif 251 #include "kbdtables.h" 252 253 /* structures for the default keyboard */ 254 static keyboard_t default_kbd; 255 static atkbd_state_t default_kbd_state; 256 static keymap_t default_keymap; 257 static accentmap_t default_accentmap; 258 static fkeytab_t default_fkeytab[NUM_FKEYS]; 259 260 /* 261 * The back door to the keyboard driver! 262 * This function is called by the console driver, via the kbdio module, 263 * to tickle keyboard drivers when the low-level console is being initialized. 264 * Almost nothing in the kernel has been initialied yet. Try to probe 265 * keyboards if possible. 266 * NOTE: because of the way the low-level console is initialized, this routine 267 * may be called more than once!! 268 */ 269 static int 270 atkbd_configure(int flags) 271 { 272 keyboard_t *kbd; 273 int arg[2]; 274 int i; 275 276 /* probe the keyboard controller */ 277 atkbdc_configure(); 278 279 /* if the driver is disabled, unregister the keyboard if any */ 280 if ((resource_int_value("atkbd", ATKBD_DEFAULT, "disabled", &i) == 0) 281 && i != 0) { 282 i = kbd_find_keyboard(ATKBD_DRIVER_NAME, ATKBD_DEFAULT); 283 if (i >= 0) { 284 kbd = kbd_get_keyboard(i); 285 kbd_unregister(kbd); 286 kbd->kb_flags &= ~KB_REGISTERED; 287 } 288 return 0; 289 } 290 291 /* XXX: a kludge to obtain the device configuration flags */ 292 if (resource_int_value("atkbd", ATKBD_DEFAULT, "flags", &i) == 0) 293 flags |= i; 294 295 /* probe the default keyboard */ 296 arg[0] = -1; 297 arg[1] = -1; 298 kbd = NULL; 299 if (atkbd_probe(ATKBD_DEFAULT, arg, flags)) 300 return 0; 301 if (atkbd_init(ATKBD_DEFAULT, &kbd, arg, flags)) 302 return 0; 303 304 /* return the number of found keyboards */ 305 return 1; 306 } 307 308 /* low-level functions */ 309 310 /* detect a keyboard */ 311 static int 312 atkbd_probe(int unit, void *arg, int flags) 313 { 314 KBDC kbdc; 315 int *data = (int *)arg; /* data[0]: controller, data[1]: irq */ 316 317 if (unit == ATKBD_DEFAULT) { 318 if (KBD_IS_PROBED(&default_kbd)) 319 return 0; 320 } 321 322 kbdc = atkbdc_open(data[0]); 323 if (kbdc == NULL) 324 return ENXIO; 325 if (probe_keyboard(kbdc, flags)) { 326 if (flags & KB_CONF_FAIL_IF_NO_KBD) 327 return ENXIO; 328 } 329 return 0; 330 } 331 332 /* reset and initialize the device */ 333 static int 334 atkbd_init(int unit, keyboard_t **kbdp, void *arg, int flags) 335 { 336 keyboard_t *kbd; 337 atkbd_state_t *state; 338 keymap_t *keymap; 339 accentmap_t *accmap; 340 fkeytab_t *fkeymap; 341 int fkeymap_size; 342 int delay[2]; 343 int *data = (int *)arg; /* data[0]: controller, data[1]: irq */ 344 345 /* XXX */ 346 if (unit == ATKBD_DEFAULT) { 347 *kbdp = kbd = &default_kbd; 348 if (KBD_IS_INITIALIZED(kbd) && KBD_IS_CONFIGURED(kbd)) 349 return 0; 350 state = &default_kbd_state; 351 keymap = &default_keymap; 352 accmap = &default_accentmap; 353 fkeymap = default_fkeytab; 354 fkeymap_size = 355 sizeof(default_fkeytab)/sizeof(default_fkeytab[0]); 356 } else if (*kbdp == NULL) { 357 *kbdp = kbd = kmalloc(sizeof(*kbd), M_DEVBUF, M_WAITOK|M_ZERO); 358 state = kmalloc(sizeof(*state), M_DEVBUF, M_WAITOK|M_ZERO); 359 keymap = kmalloc(sizeof(key_map), M_DEVBUF, M_WAITOK); 360 accmap = kmalloc(sizeof(accent_map), M_DEVBUF, M_WAITOK); 361 fkeymap = kmalloc(sizeof(fkey_tab), M_DEVBUF, M_WAITOK); 362 fkeymap_size = sizeof(fkey_tab)/sizeof(fkey_tab[0]); 363 } else if (KBD_IS_INITIALIZED(*kbdp) && KBD_IS_CONFIGURED(*kbdp)) { 364 return 0; 365 } else { 366 kbd = *kbdp; 367 state = (atkbd_state_t *)kbd->kb_data; 368 bzero(state, sizeof(*state)); 369 keymap = kbd->kb_keymap; 370 accmap = kbd->kb_accentmap; 371 fkeymap = kbd->kb_fkeytab; 372 fkeymap_size = kbd->kb_fkeytab_size; 373 } 374 375 if (!KBD_IS_PROBED(kbd)) { 376 state->kbdc = atkbdc_open(data[0]); 377 if (state->kbdc == NULL) 378 return ENXIO; 379 kbd_init_struct(kbd, ATKBD_DRIVER_NAME, KB_OTHER, unit, flags, 380 KB_PRI_ATKBD, 0, 0); 381 bcopy(&key_map, keymap, sizeof(key_map)); 382 bcopy(&accent_map, accmap, sizeof(accent_map)); 383 bcopy(fkey_tab, fkeymap, 384 imin(fkeymap_size*sizeof(fkeymap[0]), sizeof(fkey_tab))); 385 kbd_set_maps(kbd, keymap, accmap, fkeymap, fkeymap_size); 386 kbd->kb_data = (void *)state; 387 388 if (probe_keyboard(state->kbdc, flags)) { /* shouldn't happen */ 389 if (flags & KB_CONF_FAIL_IF_NO_KBD) 390 return ENXIO; 391 } else { 392 KBD_FOUND_DEVICE(kbd); 393 } 394 atkbd_clear_state(kbd); 395 state->ks_mode = K_XLATE; 396 /* 397 * FIXME: set the initial value for lock keys in ks_state 398 * according to the BIOS data? 399 */ 400 KBD_PROBE_DONE(kbd); 401 } 402 if (!KBD_IS_INITIALIZED(kbd) && !(flags & KB_CONF_PROBE_ONLY)) { 403 kbd->kb_config = flags & ~KB_CONF_PROBE_ONLY; 404 if (KBD_HAS_DEVICE(kbd) 405 && init_keyboard(state->kbdc, &kbd->kb_type, kbd->kb_config) 406 && (kbd->kb_config & KB_CONF_FAIL_IF_NO_KBD)) 407 return ENXIO; 408 atkbd_ioctl(kbd, KDSETLED, (caddr_t)&state->ks_state); 409 get_typematic(kbd); 410 delay[0] = kbd->kb_delay1; 411 delay[1] = kbd->kb_delay2; 412 atkbd_ioctl(kbd, KDSETREPEAT, (caddr_t)delay); 413 KBD_INIT_DONE(kbd); 414 } 415 if (!KBD_IS_CONFIGURED(kbd)) { 416 if (kbd_register(kbd) < 0) 417 return ENXIO; 418 KBD_CONFIG_DONE(kbd); 419 } 420 421 return 0; 422 } 423 424 /* finish using this keyboard */ 425 static int 426 atkbd_term(keyboard_t *kbd) 427 { 428 kbd_unregister(kbd); 429 return 0; 430 } 431 432 /* keyboard interrupt routine */ 433 static int 434 atkbd_intr(keyboard_t *kbd, void *arg) 435 { 436 atkbd_state_t *state; 437 int delay[2]; 438 int c; 439 440 if (KBD_IS_ACTIVE(kbd) && KBD_IS_BUSY(kbd)) { 441 /* let the callback function to process the input */ 442 (*kbd->kb_callback.kc_func)(kbd, KBDIO_KEYINPUT, 443 kbd->kb_callback.kc_arg); 444 } else { 445 /* read and discard the input; no one is waiting for input */ 446 do { 447 c = atkbd_read_char(kbd, FALSE); 448 } while (c != NOKEY); 449 450 if (!KBD_HAS_DEVICE(kbd)) { 451 /* 452 * The keyboard was not detected before; 453 * it must have been reconnected! 454 */ 455 state = (atkbd_state_t *)kbd->kb_data; 456 init_keyboard(state->kbdc, &kbd->kb_type, 457 kbd->kb_config); 458 atkbd_ioctl(kbd, KDSETLED, (caddr_t)&state->ks_state); 459 get_typematic(kbd); 460 delay[0] = kbd->kb_delay1; 461 delay[1] = kbd->kb_delay2; 462 atkbd_ioctl(kbd, KDSETREPEAT, (caddr_t)delay); 463 KBD_FOUND_DEVICE(kbd); 464 } 465 } 466 return 0; 467 } 468 469 /* test the interface to the device */ 470 static int 471 atkbd_test_if(keyboard_t *kbd) 472 { 473 int error; 474 475 error = 0; 476 empty_both_buffers(((atkbd_state_t *)kbd->kb_data)->kbdc, 10); 477 crit_enter(); 478 if (!test_controller(((atkbd_state_t *)kbd->kb_data)->kbdc)) 479 error = EIO; 480 else if (test_kbd_port(((atkbd_state_t *)kbd->kb_data)->kbdc) != 0) 481 error = EIO; 482 crit_exit(); 483 484 return error; 485 } 486 487 /* 488 * Enable the access to the device; until this function is called, 489 * the client cannot read from the keyboard. 490 */ 491 static int 492 atkbd_enable(keyboard_t *kbd) 493 { 494 crit_enter(); 495 KBD_ACTIVATE(kbd); 496 crit_exit(); 497 return 0; 498 } 499 500 /* disallow the access to the device */ 501 static int 502 atkbd_disable(keyboard_t *kbd) 503 { 504 crit_enter(); 505 KBD_DEACTIVATE(kbd); 506 crit_exit(); 507 return 0; 508 } 509 510 /* read one byte from the keyboard if it's allowed */ 511 static int 512 atkbd_read(keyboard_t *kbd, int wait) 513 { 514 int c; 515 516 if (wait) 517 c = read_kbd_data(((atkbd_state_t *)kbd->kb_data)->kbdc); 518 else 519 c = read_kbd_data_no_wait(((atkbd_state_t *)kbd->kb_data)->kbdc); 520 if (c != -1) 521 ++kbd->kb_count; 522 return (KBD_IS_ACTIVE(kbd) ? c : -1); 523 } 524 525 /* check if data is waiting */ 526 static int 527 atkbd_check(keyboard_t *kbd) 528 { 529 if (!KBD_IS_ACTIVE(kbd)) 530 return FALSE; 531 return kbdc_data_ready(((atkbd_state_t *)kbd->kb_data)->kbdc); 532 } 533 534 /* read char from the keyboard */ 535 static u_int 536 atkbd_read_char(keyboard_t *kbd, int wait) 537 { 538 atkbd_state_t *state; 539 u_int action; 540 int scancode; 541 int keycode; 542 543 state = (atkbd_state_t *)kbd->kb_data; 544 next_code: 545 /* do we have a composed char to return? */ 546 if (!(state->ks_flags & COMPOSE) && (state->ks_composed_char > 0)) { 547 action = state->ks_composed_char; 548 state->ks_composed_char = 0; 549 if (action > UCHAR_MAX) 550 return ERRKEY; 551 return action; 552 } 553 554 /* see if there is something in the keyboard port */ 555 if (wait) { 556 do { 557 scancode = read_kbd_data(state->kbdc); 558 } while (scancode == -1); 559 } else { 560 scancode = read_kbd_data_no_wait(state->kbdc); 561 if (scancode == -1) 562 return NOKEY; 563 } 564 ++kbd->kb_count; 565 566 #if KBDIO_DEBUG >= 10 567 printf("atkbd_read_char(): scancode:0x%x\n", scancode); 568 #endif 569 570 /* return the byte as is for the K_RAW mode */ 571 if (state->ks_mode == K_RAW) 572 return scancode; 573 574 /* translate the scan code into a keycode */ 575 keycode = scancode & 0x7F; 576 switch (state->ks_prefix) { 577 case 0x00: /* normal scancode */ 578 switch(scancode) { 579 case 0xB8: /* left alt (compose key) released */ 580 if (state->ks_flags & COMPOSE) { 581 state->ks_flags &= ~COMPOSE; 582 if (state->ks_composed_char > UCHAR_MAX) 583 state->ks_composed_char = 0; 584 } 585 break; 586 case 0x38: /* left alt (compose key) pressed */ 587 if (!(state->ks_flags & COMPOSE)) { 588 state->ks_flags |= COMPOSE; 589 state->ks_composed_char = 0; 590 } 591 break; 592 case 0xE0: 593 case 0xE1: 594 state->ks_prefix = scancode; 595 goto next_code; 596 } 597 break; 598 case 0xE0: /* 0xE0 prefix */ 599 state->ks_prefix = 0; 600 switch (keycode) { 601 case 0x1C: /* right enter key */ 602 keycode = 0x59; 603 break; 604 case 0x1D: /* right ctrl key */ 605 keycode = 0x5A; 606 break; 607 case 0x35: /* keypad divide key */ 608 keycode = 0x5B; 609 break; 610 case 0x37: /* print scrn key */ 611 keycode = 0x5C; 612 break; 613 case 0x38: /* right alt key (alt gr) */ 614 keycode = 0x5D; 615 break; 616 case 0x46: /* ctrl-pause/break on AT 101 (see below) */ 617 keycode = 0x68; 618 break; 619 case 0x47: /* grey home key */ 620 keycode = 0x5E; 621 break; 622 case 0x48: /* grey up arrow key */ 623 keycode = 0x5F; 624 break; 625 case 0x49: /* grey page up key */ 626 keycode = 0x60; 627 break; 628 case 0x4B: /* grey left arrow key */ 629 keycode = 0x61; 630 break; 631 case 0x4D: /* grey right arrow key */ 632 keycode = 0x62; 633 break; 634 case 0x4F: /* grey end key */ 635 keycode = 0x63; 636 break; 637 case 0x50: /* grey down arrow key */ 638 keycode = 0x64; 639 break; 640 case 0x51: /* grey page down key */ 641 keycode = 0x65; 642 break; 643 case 0x52: /* grey insert key */ 644 keycode = 0x66; 645 break; 646 case 0x53: /* grey delete key */ 647 keycode = 0x67; 648 break; 649 /* the following 3 are only used on the MS "Natural" keyboard */ 650 case 0x5b: /* left Window key */ 651 keycode = 0x69; 652 break; 653 case 0x5c: /* right Window key */ 654 keycode = 0x6a; 655 break; 656 case 0x5d: /* menu key */ 657 keycode = 0x6b; 658 break; 659 default: /* ignore everything else */ 660 goto next_code; 661 } 662 break; 663 case 0xE1: /* 0xE1 prefix */ 664 /* 665 * The pause/break key on the 101 keyboard produces: 666 * E1-1D-45 E1-9D-C5 667 * Ctrl-pause/break produces: 668 * E0-46 E0-C6 (See above.) 669 */ 670 state->ks_prefix = 0; 671 if (keycode == 0x1D) 672 state->ks_prefix = 0x1D; 673 goto next_code; 674 /* NOT REACHED */ 675 case 0x1D: /* pause / break */ 676 state->ks_prefix = 0; 677 if (keycode != 0x45) 678 goto next_code; 679 keycode = 0x68; 680 break; 681 } 682 683 if (kbd->kb_type == KB_84) { 684 switch (keycode) { 685 case 0x37: /* *(numpad)/print screen */ 686 if (state->ks_flags & SHIFTS) 687 keycode = 0x5c; /* print screen */ 688 break; 689 case 0x45: /* num lock/pause */ 690 if (state->ks_flags & CTLS) 691 keycode = 0x68; /* pause */ 692 break; 693 case 0x46: /* scroll lock/break */ 694 if (state->ks_flags & CTLS) 695 keycode = 0x6c; /* break */ 696 break; 697 } 698 } else if (kbd->kb_type == KB_101) { 699 switch (keycode) { 700 case 0x5c: /* print screen */ 701 if (state->ks_flags & ALTS) 702 keycode = 0x54; /* sysrq */ 703 break; 704 case 0x68: /* pause/break */ 705 if (state->ks_flags & CTLS) 706 keycode = 0x6c; /* break */ 707 break; 708 } 709 } 710 711 /* return the key code in the K_CODE mode */ 712 if (state->ks_mode == K_CODE) 713 return (keycode | (scancode & 0x80)); 714 715 /* compose a character code */ 716 if (state->ks_flags & COMPOSE) { 717 switch (keycode | (scancode & 0x80)) { 718 /* key pressed, process it */ 719 case 0x47: case 0x48: case 0x49: /* keypad 7,8,9 */ 720 state->ks_composed_char *= 10; 721 state->ks_composed_char += keycode - 0x40; 722 if (state->ks_composed_char > UCHAR_MAX) 723 return ERRKEY; 724 goto next_code; 725 case 0x4B: case 0x4C: case 0x4D: /* keypad 4,5,6 */ 726 state->ks_composed_char *= 10; 727 state->ks_composed_char += keycode - 0x47; 728 if (state->ks_composed_char > UCHAR_MAX) 729 return ERRKEY; 730 goto next_code; 731 case 0x4F: case 0x50: case 0x51: /* keypad 1,2,3 */ 732 state->ks_composed_char *= 10; 733 state->ks_composed_char += keycode - 0x4E; 734 if (state->ks_composed_char > UCHAR_MAX) 735 return ERRKEY; 736 goto next_code; 737 case 0x52: /* keypad 0 */ 738 state->ks_composed_char *= 10; 739 if (state->ks_composed_char > UCHAR_MAX) 740 return ERRKEY; 741 goto next_code; 742 743 /* key released, no interest here */ 744 case 0xC7: case 0xC8: case 0xC9: /* keypad 7,8,9 */ 745 case 0xCB: case 0xCC: case 0xCD: /* keypad 4,5,6 */ 746 case 0xCF: case 0xD0: case 0xD1: /* keypad 1,2,3 */ 747 case 0xD2: /* keypad 0 */ 748 goto next_code; 749 750 case 0x38: /* left alt key */ 751 break; 752 753 default: 754 if (state->ks_composed_char > 0) { 755 state->ks_flags &= ~COMPOSE; 756 state->ks_composed_char = 0; 757 return ERRKEY; 758 } 759 break; 760 } 761 } 762 763 /* keycode to key action */ 764 action = genkbd_keyaction(kbd, keycode, scancode & 0x80, 765 &state->ks_state, &state->ks_accents); 766 if (action == NOKEY) 767 goto next_code; 768 else 769 return action; 770 } 771 772 /* check if char is waiting */ 773 static int 774 atkbd_check_char(keyboard_t *kbd) 775 { 776 atkbd_state_t *state; 777 778 if (!KBD_IS_ACTIVE(kbd)) 779 return FALSE; 780 state = (atkbd_state_t *)kbd->kb_data; 781 if (!(state->ks_flags & COMPOSE) && (state->ks_composed_char > 0)) 782 return TRUE; 783 return kbdc_data_ready(state->kbdc); 784 } 785 786 /* some useful control functions */ 787 static int 788 atkbd_ioctl(keyboard_t *kbd, u_long cmd, caddr_t arg) 789 { 790 /* trasnlate LED_XXX bits into the device specific bits */ 791 static u_char ledmap[8] = { 792 0, 4, 2, 6, 1, 5, 3, 7, 793 }; 794 atkbd_state_t *state = kbd->kb_data; 795 int error; 796 int i; 797 798 crit_enter(); 799 800 switch (cmd) { 801 802 case KDGKBMODE: /* get keyboard mode */ 803 *(int *)arg = state->ks_mode; 804 break; 805 case KDSKBMODE: /* set keyboard mode */ 806 switch (*(int *)arg) { 807 case K_XLATE: 808 if (state->ks_mode != K_XLATE) { 809 /* make lock key state and LED state match */ 810 state->ks_state &= ~LOCK_MASK; 811 state->ks_state |= KBD_LED_VAL(kbd); 812 } 813 /* FALL THROUGH */ 814 case K_RAW: 815 case K_CODE: 816 if (state->ks_mode != *(int *)arg) { 817 atkbd_clear_state(kbd); 818 state->ks_mode = *(int *)arg; 819 } 820 break; 821 default: 822 crit_exit(); 823 return EINVAL; 824 } 825 break; 826 827 case KDGETLED: /* get keyboard LED */ 828 *(int *)arg = KBD_LED_VAL(kbd); 829 break; 830 case KDSETLED: /* set keyboard LED */ 831 /* NOTE: lock key state in ks_state won't be changed */ 832 if (*(int *)arg & ~LOCK_MASK) { 833 crit_exit(); 834 return EINVAL; 835 } 836 i = *(int *)arg; 837 /* replace CAPS LED with ALTGR LED for ALTGR keyboards */ 838 if (state->ks_mode == K_XLATE && 839 kbd->kb_keymap->n_keys > ALTGR_OFFSET) { 840 if (i & ALKED) 841 i |= CLKED; 842 else 843 i &= ~CLKED; 844 } 845 if (KBD_HAS_DEVICE(kbd)) { 846 error = write_kbd(state->kbdc, KBDC_SET_LEDS, 847 ledmap[i & LED_MASK]); 848 if (error) { 849 crit_exit(); 850 return error; 851 } 852 } 853 KBD_LED_VAL(kbd) = *(int *)arg; 854 break; 855 856 case KDGKBSTATE: /* get lock key state */ 857 *(int *)arg = state->ks_state & LOCK_MASK; 858 break; 859 case KDSKBSTATE: /* set lock key state */ 860 if (*(int *)arg & ~LOCK_MASK) { 861 crit_exit(); 862 return EINVAL; 863 } 864 state->ks_state &= ~LOCK_MASK; 865 state->ks_state |= *(int *)arg; 866 crit_exit(); 867 /* set LEDs and quit */ 868 return atkbd_ioctl(kbd, KDSETLED, arg); 869 870 case KDSETREPEAT: /* set keyboard repeat rate (new interface) */ 871 crit_exit(); 872 if (!KBD_HAS_DEVICE(kbd)) 873 return 0; 874 i = typematic(((int *)arg)[0], ((int *)arg)[1]); 875 error = write_kbd(state->kbdc, KBDC_SET_TYPEMATIC, i); 876 if (error == 0) { 877 kbd->kb_delay1 = typematic_delay(i); 878 kbd->kb_delay2 = typematic_rate(i); 879 } 880 return error; 881 882 case KDSETRAD: /* set keyboard repeat rate (old interface) */ 883 crit_exit(); 884 if (!KBD_HAS_DEVICE(kbd)) 885 return 0; 886 error = write_kbd(state->kbdc, KBDC_SET_TYPEMATIC, *(int *)arg); 887 if (error == 0) { 888 kbd->kb_delay1 = typematic_delay(*(int *)arg); 889 kbd->kb_delay2 = typematic_rate(*(int *)arg); 890 } 891 return error; 892 893 case PIO_KEYMAP: /* set keyboard translation table */ 894 case PIO_KEYMAPENT: /* set keyboard translation table entry */ 895 case PIO_DEADKEYMAP: /* set accent key translation table */ 896 state->ks_accents = 0; 897 /* FALL THROUGH */ 898 default: 899 crit_exit(); 900 return genkbd_commonioctl(kbd, cmd, arg); 901 } 902 903 crit_exit(); 904 return 0; 905 } 906 907 /* lock the access to the keyboard */ 908 static int 909 atkbd_lock(keyboard_t *kbd, int lock) 910 { 911 return kbdc_lock(((atkbd_state_t *)kbd->kb_data)->kbdc, lock); 912 } 913 914 /* clear the internal state of the keyboard */ 915 static void 916 atkbd_clear_state(keyboard_t *kbd) 917 { 918 atkbd_state_t *state; 919 920 state = (atkbd_state_t *)kbd->kb_data; 921 state->ks_flags = 0; 922 state->ks_polling = 0; 923 state->ks_state &= LOCK_MASK; /* preserve locking key state */ 924 state->ks_accents = 0; 925 state->ks_composed_char = 0; 926 #if 0 927 state->ks_prefix = 0; /* XXX */ 928 #endif 929 } 930 931 /* save the internal state */ 932 static int 933 atkbd_get_state(keyboard_t *kbd, void *buf, size_t len) 934 { 935 if (len == 0) 936 return sizeof(atkbd_state_t); 937 if (len < sizeof(atkbd_state_t)) 938 return -1; 939 bcopy(kbd->kb_data, buf, sizeof(atkbd_state_t)); 940 return 0; 941 } 942 943 /* set the internal state */ 944 static int 945 atkbd_set_state(keyboard_t *kbd, void *buf, size_t len) 946 { 947 if (len < sizeof(atkbd_state_t)) 948 return ENOMEM; 949 if (((atkbd_state_t *)kbd->kb_data)->kbdc 950 != ((atkbd_state_t *)buf)->kbdc) 951 return ENOMEM; 952 bcopy(buf, kbd->kb_data, sizeof(atkbd_state_t)); 953 return 0; 954 } 955 956 static int 957 atkbd_poll(keyboard_t *kbd, int on) 958 { 959 atkbd_state_t *state; 960 961 state = (atkbd_state_t *)kbd->kb_data; 962 crit_enter(); 963 if (on) 964 ++state->ks_polling; 965 else 966 --state->ks_polling; 967 crit_exit(); 968 return 0; 969 } 970 971 /* local functions */ 972 973 static int 974 get_typematic(keyboard_t *kbd) 975 { 976 #ifdef __i386__ 977 /* 978 * Only some systems allow us to retrieve the keyboard repeat 979 * rate previously set via the BIOS... 980 */ 981 struct vm86frame vmf; 982 u_int32_t p; 983 984 bzero(&vmf, sizeof(vmf)); 985 vmf.vmf_ax = 0xc000; 986 vm86_intcall(0x15, &vmf); 987 if ((vmf.vmf_eflags & PSL_C) || vmf.vmf_ah) 988 return ENODEV; 989 p = BIOS_PADDRTOVADDR(((u_int32_t)vmf.vmf_es << 4) + vmf.vmf_bx); 990 if ((readb(p + 6) & 0x40) == 0) /* int 16, function 0x09 supported? */ 991 return ENODEV; 992 vmf.vmf_ax = 0x0900; 993 vm86_intcall(0x16, &vmf); 994 if ((vmf.vmf_al & 0x08) == 0) /* int 16, function 0x0306 supported? */ 995 return ENODEV; 996 vmf.vmf_ax = 0x0306; 997 vm86_intcall(0x16, &vmf); 998 kbd->kb_delay1 = typematic_delay(vmf.vmf_bh << 5); 999 kbd->kb_delay2 = typematic_rate(vmf.vmf_bl); 1000 return 0; 1001 #else 1002 return ENODEV; 1003 #endif /* __i386__ */ 1004 } 1005 1006 static int 1007 setup_kbd_port(KBDC kbdc, int port, int intr) 1008 { 1009 if (!set_controller_command_byte(kbdc, 1010 KBD_KBD_CONTROL_BITS, 1011 ((port) ? KBD_ENABLE_KBD_PORT : KBD_DISABLE_KBD_PORT) 1012 | ((intr) ? KBD_ENABLE_KBD_INT : KBD_DISABLE_KBD_INT))) 1013 return 1; 1014 return 0; 1015 } 1016 1017 static int 1018 get_kbd_echo(KBDC kbdc) 1019 { 1020 /* enable the keyboard port, but disable the keyboard intr. */ 1021 if (setup_kbd_port(kbdc, TRUE, FALSE)) 1022 /* CONTROLLER ERROR: there is very little we can do... */ 1023 return ENXIO; 1024 1025 /* see if something is present */ 1026 write_kbd_command(kbdc, KBDC_ECHO); 1027 if (read_kbd_data(kbdc) != KBD_ECHO) { 1028 empty_both_buffers(kbdc, 10); 1029 test_controller(kbdc); 1030 test_kbd_port(kbdc); 1031 return ENXIO; 1032 } 1033 1034 /* enable the keyboard port and intr. */ 1035 if (setup_kbd_port(kbdc, TRUE, TRUE)) { 1036 /* 1037 * CONTROLLER ERROR 1038 * This is serious; the keyboard intr is left disabled! 1039 */ 1040 return ENXIO; 1041 } 1042 1043 return 0; 1044 } 1045 1046 static int 1047 probe_keyboard(KBDC kbdc, int flags) 1048 { 1049 /* 1050 * Don't try to print anything in this function. The low-level 1051 * console may not have been initialized yet... 1052 */ 1053 int err; 1054 int c; 1055 int m; 1056 1057 if (!kbdc_lock(kbdc, TRUE)) { 1058 /* driver error? */ 1059 return ENXIO; 1060 } 1061 1062 /* temporarily block data transmission from the keyboard */ 1063 write_controller_command(kbdc, KBDC_DISABLE_KBD_PORT); 1064 1065 /* flush any noise in the buffer */ 1066 empty_both_buffers(kbdc, 100); 1067 1068 /* save the current keyboard controller command byte */ 1069 m = kbdc_get_device_mask(kbdc) & ~KBD_KBD_CONTROL_BITS; 1070 c = get_controller_command_byte(kbdc); 1071 if (c == -1) { 1072 /* CONTROLLER ERROR */ 1073 kbdc_set_device_mask(kbdc, m); 1074 kbdc_lock(kbdc, FALSE); 1075 return ENXIO; 1076 } 1077 1078 /* 1079 * The keyboard may have been screwed up by the boot block. 1080 * We may just be able to recover from error by testing the controller 1081 * and the keyboard port. The controller command byte needs to be 1082 * saved before this recovery operation, as some controllers seem 1083 * to set the command byte to particular values. 1084 */ 1085 test_controller(kbdc); 1086 test_kbd_port(kbdc); 1087 1088 err = get_kbd_echo(kbdc); 1089 1090 /* 1091 * Even if the keyboard doesn't seem to be present (err != 0), 1092 * we shall enable the keyboard port and interrupt so that 1093 * the driver will be operable when the keyboard is attached 1094 * to the system later. It is NOT recommended to hot-plug 1095 * the AT keyboard, but many people do so... 1096 */ 1097 kbdc_set_device_mask(kbdc, m | KBD_KBD_CONTROL_BITS); 1098 setup_kbd_port(kbdc, TRUE, TRUE); 1099 #if 0 1100 if (err == 0) { 1101 kbdc_set_device_mask(kbdc, m | KBD_KBD_CONTROL_BITS); 1102 } else { 1103 /* try to restore the command byte as before */ 1104 set_controller_command_byte(kbdc, 0xff, c); 1105 kbdc_set_device_mask(kbdc, m); 1106 } 1107 #endif 1108 1109 kbdc_lock(kbdc, FALSE); 1110 return err; 1111 } 1112 1113 static int 1114 init_keyboard(KBDC kbdc, int *type, int flags) 1115 { 1116 int codeset; 1117 int id; 1118 int c; 1119 1120 if (!kbdc_lock(kbdc, TRUE)) { 1121 /* driver error? */ 1122 return EIO; 1123 } 1124 1125 /* temporarily block data transmission from the keyboard */ 1126 write_controller_command(kbdc, KBDC_DISABLE_KBD_PORT); 1127 1128 /* save the current controller command byte */ 1129 empty_both_buffers(kbdc, 200); 1130 c = get_controller_command_byte(kbdc); 1131 if (c == -1) { 1132 /* CONTROLLER ERROR */ 1133 kbdc_lock(kbdc, FALSE); 1134 printf("atkbd: unable to get the current command byte value.\n"); 1135 return EIO; 1136 } 1137 if (bootverbose) 1138 printf("atkbd: the current kbd controller command byte %04x\n", 1139 c); 1140 #if 0 1141 /* override the keyboard lock switch */ 1142 c |= KBD_OVERRIDE_KBD_LOCK; 1143 #endif 1144 1145 /* enable the keyboard port, but disable the keyboard intr. */ 1146 if (setup_kbd_port(kbdc, TRUE, FALSE)) { 1147 /* CONTROLLER ERROR: there is very little we can do... */ 1148 printf("atkbd: unable to set the command byte.\n"); 1149 kbdc_lock(kbdc, FALSE); 1150 return EIO; 1151 } 1152 1153 /* 1154 * Check if we have an XT keyboard before we attempt to reset it. 1155 * The procedure assumes that the keyboard and the controller have 1156 * been set up properly by BIOS and have not been messed up 1157 * during the boot process. 1158 */ 1159 codeset = -1; 1160 if (flags & KB_CONF_ALT_SCANCODESET) 1161 /* the user says there is a XT keyboard */ 1162 codeset = 1; 1163 #ifdef KBD_DETECT_XT_KEYBOARD 1164 else if ((c & KBD_TRANSLATION) == 0) { 1165 /* SET_SCANCODE_SET is not always supported; ignore error */ 1166 if (send_kbd_command_and_data(kbdc, KBDC_SET_SCANCODE_SET, 0) 1167 == KBD_ACK) 1168 codeset = read_kbd_data(kbdc); 1169 } 1170 if (bootverbose) 1171 printf("atkbd: scancode set %d\n", codeset); 1172 #endif /* KBD_DETECT_XT_KEYBOARD */ 1173 1174 *type = KB_OTHER; 1175 id = get_kbd_id(kbdc); 1176 switch(id) { 1177 case 0x41ab: /* 101/102/... Enhanced */ 1178 case 0x83ab: /* ditto */ 1179 case 0x54ab: /* SpaceSaver */ 1180 case 0x84ab: /* ditto */ 1181 #if 0 1182 case 0x90ab: /* 'G' */ 1183 case 0x91ab: /* 'P' */ 1184 case 0x92ab: /* 'A' */ 1185 #endif 1186 *type = KB_101; 1187 break; 1188 case -1: /* AT 84 keyboard doesn't return ID */ 1189 *type = KB_84; 1190 break; 1191 default: 1192 break; 1193 } 1194 if (bootverbose) 1195 printf("atkbd: keyboard ID 0x%x (%d)\n", id, *type); 1196 1197 /* reset keyboard hardware */ 1198 if (!(flags & KB_CONF_NO_RESET) && !reset_kbd(kbdc)) { 1199 /* 1200 * KEYBOARD ERROR 1201 * Keyboard reset may fail either because the keyboard 1202 * doen't exist, or because the keyboard doesn't pass 1203 * the self-test, or the keyboard controller on the 1204 * motherboard and the keyboard somehow fail to shake hands. 1205 * It is just possible, particularly in the last case, 1206 * that the keyoard controller may be left in a hung state. 1207 * test_controller() and test_kbd_port() appear to bring 1208 * the keyboard controller back (I don't know why and how, 1209 * though.) 1210 */ 1211 empty_both_buffers(kbdc, 10); 1212 test_controller(kbdc); 1213 test_kbd_port(kbdc); 1214 /* 1215 * We could disable the keyboard port and interrupt... but, 1216 * the keyboard may still exist (see above). 1217 */ 1218 set_controller_command_byte(kbdc, 0xff, c); 1219 kbdc_lock(kbdc, FALSE); 1220 if (bootverbose) 1221 printf("atkbd: failed to reset the keyboard.\n"); 1222 return EIO; 1223 } 1224 1225 /* 1226 * Allow us to set the XT_KEYBD flag in UserConfig so that keyboards 1227 * such as those on the IBM ThinkPad laptop computers can be used 1228 * with the standard console driver. 1229 */ 1230 if (codeset == 1) { 1231 if (send_kbd_command_and_data(kbdc, 1232 KBDC_SET_SCANCODE_SET, codeset) == KBD_ACK) { 1233 /* XT kbd doesn't need scan code translation */ 1234 c &= ~KBD_TRANSLATION; 1235 } else { 1236 /* 1237 * KEYBOARD ERROR 1238 * The XT kbd isn't usable unless the proper scan 1239 * code set is selected. 1240 */ 1241 set_controller_command_byte(kbdc, 0xff, c); 1242 kbdc_lock(kbdc, FALSE); 1243 printf("atkbd: unable to set the XT keyboard mode.\n"); 1244 return EIO; 1245 } 1246 } 1247 1248 /* enable the keyboard port and intr. */ 1249 if (!set_controller_command_byte(kbdc, 1250 KBD_KBD_CONTROL_BITS | KBD_TRANSLATION | KBD_OVERRIDE_KBD_LOCK, 1251 (c & (KBD_TRANSLATION | KBD_OVERRIDE_KBD_LOCK)) 1252 | KBD_ENABLE_KBD_PORT | KBD_ENABLE_KBD_INT)) { 1253 /* 1254 * CONTROLLER ERROR 1255 * This is serious; we are left with the disabled 1256 * keyboard intr. 1257 */ 1258 set_controller_command_byte(kbdc, 0xff, c); 1259 kbdc_lock(kbdc, FALSE); 1260 printf("atkbd: unable to enable the keyboard port and intr.\n"); 1261 return EIO; 1262 } 1263 1264 kbdc_lock(kbdc, FALSE); 1265 return 0; 1266 } 1267 1268 static int 1269 write_kbd(KBDC kbdc, int command, int data) 1270 { 1271 /* prevent the timeout routine from polling the keyboard */ 1272 if (!kbdc_lock(kbdc, TRUE)) 1273 return EBUSY; 1274 1275 /* disable the keyboard and mouse interrupt */ 1276 crit_enter(); 1277 #if 0 1278 c = get_controller_command_byte(kbdc); 1279 if ((c == -1) 1280 || !set_controller_command_byte(kbdc, 1281 kbdc_get_device_mask(kbdc), 1282 KBD_DISABLE_KBD_PORT | KBD_DISABLE_KBD_INT 1283 | KBD_DISABLE_AUX_PORT | KBD_DISABLE_AUX_INT)) { 1284 /* CONTROLLER ERROR */ 1285 kbdc_lock(kbdc, FALSE); 1286 crit_exit(); 1287 return EIO; 1288 } 1289 /* 1290 * Now that the keyboard controller is told not to generate 1291 * the keyboard and mouse interrupts, call `splx()' to allow 1292 * the other tty interrupts. The clock interrupt may also occur, 1293 * but the timeout routine (`scrn_timer()') will be blocked 1294 * by the lock flag set via `kbdc_lock()' 1295 */ 1296 crit_exit(); 1297 #endif 1298 1299 if (send_kbd_command_and_data(kbdc, command, data) != KBD_ACK) 1300 send_kbd_command(kbdc, KBDC_ENABLE_KBD); 1301 1302 #if 0 1303 /* restore the interrupts */ 1304 if (!set_controller_command_byte(kbdc, 1305 kbdc_get_device_mask(kbdc), 1306 c & (KBD_KBD_CONTROL_BITS | KBD_AUX_CONTROL_BITS))) { 1307 /* CONTROLLER ERROR */ 1308 } 1309 #else 1310 crit_exit(); 1311 #endif 1312 kbdc_lock(kbdc, FALSE); 1313 1314 return 0; 1315 } 1316 1317 static int 1318 get_kbd_id(KBDC kbdc) 1319 { 1320 int id1, id2; 1321 1322 empty_both_buffers(kbdc, 10); 1323 id1 = id2 = -1; 1324 if (send_kbd_command(kbdc, KBDC_SEND_DEV_ID) != KBD_ACK) 1325 return -1; 1326 1327 DELAY(10000); /* 10 msec delay */ 1328 id1 = read_kbd_data(kbdc); 1329 if (id1 != -1) 1330 id2 = read_kbd_data(kbdc); 1331 1332 if ((id1 == -1) || (id2 == -1)) { 1333 empty_both_buffers(kbdc, 10); 1334 test_controller(kbdc); 1335 test_kbd_port(kbdc); 1336 return -1; 1337 } 1338 return ((id2 << 8) | id1); 1339 } 1340 1341 static int delays[] = { 250, 500, 750, 1000 }; 1342 static int rates[] = { 34, 38, 42, 46, 50, 55, 59, 63, 1343 68, 76, 84, 92, 100, 110, 118, 126, 1344 136, 152, 168, 184, 200, 220, 236, 252, 1345 272, 304, 336, 368, 400, 440, 472, 504 }; 1346 1347 static int 1348 typematic_delay(int i) 1349 { 1350 return delays[(i >> 5) & 3]; 1351 } 1352 1353 static int 1354 typematic_rate(int i) 1355 { 1356 return rates[i & 0x1f]; 1357 } 1358 1359 static int 1360 typematic(int delay, int rate) 1361 { 1362 int value; 1363 int i; 1364 1365 for (i = sizeof(delays)/sizeof(delays[0]) - 1; i > 0; --i) { 1366 if (delay >= delays[i]) 1367 break; 1368 } 1369 value = i << 5; 1370 for (i = sizeof(rates)/sizeof(rates[0]) - 1; i > 0; --i) { 1371 if (rate >= rates[i]) 1372 break; 1373 } 1374 value |= i; 1375 return value; 1376 } 1377