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 1.14 2007/04/22 10:43:00 y0netan1 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 #ifdef __i386__ 42 #include <machine/md_var.h> 43 #include <machine/psl.h> 44 #include <machine/vm86.h> 45 #include <machine/pc/bios.h> 46 47 #include <vm/vm.h> 48 #include <vm/pmap.h> 49 #endif /* __i386__ */ 50 51 #include <sys/kbio.h> 52 #include "kbdreg.h" 53 #include "atkbdreg.h" 54 #include "atkbdcreg.h" 55 56 #include <bus/isa/isareg.h> 57 58 static timeout_t atkbd_timeout; 59 60 int 61 atkbd_probe_unit(int unit, int ctlr, int irq, int flags) 62 { 63 keyboard_switch_t *sw; 64 int args[2]; 65 int error; 66 67 sw = kbd_get_switch(ATKBD_DRIVER_NAME); 68 if (sw == NULL) 69 return ENXIO; 70 71 args[0] = ctlr; 72 args[1] = irq; 73 error = (*sw->probe)(unit, args, flags); 74 if (error) 75 return error; 76 return 0; 77 } 78 79 int 80 atkbd_attach_unit(int unit, keyboard_t **kbd, int ctlr, int irq, int flags) 81 { 82 keyboard_switch_t *sw; 83 int args[2]; 84 int error; 85 86 sw = kbd_get_switch(ATKBD_DRIVER_NAME); 87 if (sw == NULL) 88 return ENXIO; 89 90 /* reset, initialize and enable the device */ 91 args[0] = ctlr; 92 args[1] = irq; 93 *kbd = NULL; 94 error = (*sw->probe)(unit, args, flags); 95 if (error) 96 return error; 97 error = (*sw->init)(unit, kbd, args, flags); 98 if (error) 99 return error; 100 (*sw->enable)(*kbd); 101 102 #ifdef KBD_INSTALL_CDEV 103 /* attach a virtual keyboard cdev */ 104 error = kbd_attach(*kbd); 105 if (error) 106 return error; 107 #endif 108 109 /* 110 * This is a kludge to compensate for lost keyboard interrupts. 111 * A similar code used to be in syscons. See below. XXX 112 */ 113 atkbd_timeout(*kbd); 114 115 if (bootverbose) 116 (*sw->diag)(*kbd, bootverbose); 117 return 0; 118 } 119 120 static void 121 atkbd_timeout(void *arg) 122 { 123 keyboard_t *kbd; 124 125 /* 126 * The original text of the following comments are extracted 127 * from syscons.c (1.287) 128 * 129 * With release 2.1 of the Xaccel server, the keyboard is left 130 * hanging pretty often. Apparently an interrupt from the 131 * keyboard is lost, and I don't know why (yet). 132 * This ugly hack calls the low-level interrupt routine if input 133 * is ready for the keyboard and conveniently hides the problem. XXX 134 * 135 * Try removing anything stuck in the keyboard controller; whether 136 * it's a keyboard scan code or mouse data. The low-level 137 * interrupt routine doesn't read the mouse data directly, 138 * but the keyboard controller driver will, as a side effect. 139 */ 140 /* 141 * And here is bde's original comment about this: 142 * 143 * This is necessary to handle edge triggered interrupts - if we 144 * returned when our IRQ is high due to unserviced input, then there 145 * would be no more keyboard IRQs until the keyboard is reset by 146 * external powers. 147 * 148 * The keyboard apparently unwedges the irq in most cases. 149 */ 150 crit_enter(); 151 kbd = (keyboard_t *)arg; 152 if (kbd_lock(kbd, TRUE)) { 153 /* 154 * We have seen the lock flag is not set. Let's reset 155 * the flag early, otherwise the LED update routine fails 156 * which may want the lock during the interrupt routine. 157 */ 158 kbd_lock(kbd, FALSE); 159 if (kbd_check_char(kbd)) 160 kbd_intr(kbd, NULL); 161 } 162 callout_reset(&kbd->kb_atkbd_timeout_ch, hz / 10, atkbd_timeout, arg); 163 crit_exit(); 164 } 165 166 /* LOW-LEVEL */ 167 168 #include <machine/limits.h> 169 #include <machine/clock.h> 170 171 #define ATKBD_DEFAULT 0 172 173 typedef struct atkbd_state { 174 KBDC kbdc; /* keyboard controller */ 175 int ks_mode; /* input mode (K_XLATE,K_RAW,K_CODE) */ 176 int ks_flags; /* flags */ 177 #define COMPOSE (1 << 0) 178 int ks_polling; 179 int ks_state; /* shift/lock key state */ 180 int ks_accents; /* accent key index (> 0) */ 181 u_int ks_composed_char; /* composed char code (> 0) */ 182 u_char ks_prefix; /* AT scan code prefix */ 183 } atkbd_state_t; 184 185 /* keyboard driver declaration */ 186 static int atkbd_configure(int flags); 187 static kbd_probe_t atkbd_probe; 188 static kbd_init_t atkbd_init; 189 static kbd_term_t atkbd_term; 190 static kbd_intr_t atkbd_intr; 191 static kbd_test_if_t atkbd_test_if; 192 static kbd_enable_t atkbd_enable; 193 static kbd_disable_t atkbd_disable; 194 static kbd_read_t atkbd_read; 195 static kbd_check_t atkbd_check; 196 static kbd_read_char_t atkbd_read_char; 197 static kbd_check_char_t atkbd_check_char; 198 static kbd_ioctl_t atkbd_ioctl; 199 static kbd_lock_t atkbd_lock; 200 static kbd_clear_state_t atkbd_clear_state; 201 static kbd_get_state_t atkbd_get_state; 202 static kbd_set_state_t atkbd_set_state; 203 static kbd_poll_mode_t atkbd_poll; 204 205 keyboard_switch_t atkbdsw = { 206 atkbd_probe, 207 atkbd_init, 208 atkbd_term, 209 atkbd_intr, 210 atkbd_test_if, 211 atkbd_enable, 212 atkbd_disable, 213 atkbd_read, 214 atkbd_check, 215 atkbd_read_char, 216 atkbd_check_char, 217 atkbd_ioctl, 218 atkbd_lock, 219 atkbd_clear_state, 220 atkbd_get_state, 221 atkbd_set_state, 222 genkbd_get_fkeystr, 223 atkbd_poll, 224 genkbd_diag, 225 }; 226 227 KEYBOARD_DRIVER(atkbd, atkbdsw, atkbd_configure); 228 229 /* local functions */ 230 static int get_typematic(keyboard_t *kbd); 231 static int setup_kbd_port(KBDC kbdc, int port, int intr); 232 static int get_kbd_echo(KBDC kbdc); 233 static int probe_keyboard(KBDC kbdc, int flags); 234 static int init_keyboard(KBDC kbdc, int *type, int flags); 235 static int write_kbd(KBDC kbdc, int command, int data); 236 static int get_kbd_id(KBDC kbdc); 237 static int typematic(int delay, int rate); 238 static int typematic_delay(int delay); 239 static int typematic_rate(int rate); 240 241 /* local variables */ 242 243 /* the initial key map, accent map and fkey strings */ 244 #ifdef ATKBD_DFLT_KEYMAP 245 #define KBD_DFLT_KEYMAP 246 #include "atkbdmap.h" 247 #endif 248 #include "kbdtables.h" 249 250 /* structures for the default keyboard */ 251 static keyboard_t default_kbd; 252 static atkbd_state_t default_kbd_state; 253 static keymap_t default_keymap; 254 static accentmap_t default_accentmap; 255 static fkeytab_t default_fkeytab[NUM_FKEYS]; 256 257 /* 258 * The back door to the keyboard driver! 259 * This function is called by the console driver, via the kbdio module, 260 * to tickle keyboard drivers when the low-level console is being initialized. 261 * Almost nothing in the kernel has been initialied yet. Try to probe 262 * keyboards if possible. 263 * NOTE: because of the way the low-level console is initialized, this routine 264 * may be called more than once!! 265 */ 266 static int 267 atkbd_configure(int flags) 268 { 269 keyboard_t *kbd; 270 int arg[2]; 271 int i; 272 273 /* 274 * Probe the keyboard controller, if not present or if the driver 275 * is disabled, unregister the keyboard if any. 276 */ 277 if (atkbdc_configure() != 0 || 278 resource_disabled("atkbd", ATKBD_DEFAULT)) { 279 i = kbd_find_keyboard(ATKBD_DRIVER_NAME, ATKBD_DEFAULT); 280 if (i >= 0) { 281 kbd = kbd_get_keyboard(i); 282 kbd_unregister(kbd); 283 kbd->kb_flags &= ~KB_REGISTERED; 284 } 285 return 0; 286 } 287 288 /* XXX: a kludge to obtain the device configuration flags */ 289 if (resource_int_value("atkbd", ATKBD_DEFAULT, "flags", &i) == 0) 290 flags |= i; 291 292 /* probe the default keyboard */ 293 arg[0] = -1; 294 arg[1] = -1; 295 kbd = NULL; 296 if (atkbd_probe(ATKBD_DEFAULT, arg, flags)) 297 return 0; 298 if (atkbd_init(ATKBD_DEFAULT, &kbd, arg, flags)) 299 return 0; 300 301 /* return the number of found keyboards */ 302 return 1; 303 } 304 305 /* low-level functions */ 306 307 /* detect a keyboard */ 308 static int 309 atkbd_probe(int unit, void *arg, int flags) 310 { 311 KBDC kbdc; 312 int *data = (int *)arg; /* data[0]: controller, data[1]: irq */ 313 314 if (unit == ATKBD_DEFAULT) { 315 if (KBD_IS_PROBED(&default_kbd)) 316 return 0; 317 } 318 319 kbdc = atkbdc_open(data[0]); 320 if (kbdc == NULL) 321 return ENXIO; 322 if (probe_keyboard(kbdc, flags)) { 323 if (flags & KB_CONF_FAIL_IF_NO_KBD) 324 return ENXIO; 325 } 326 return 0; 327 } 328 329 /* reset and initialize the device */ 330 static int 331 atkbd_init(int unit, keyboard_t **kbdp, void *arg, int flags) 332 { 333 keyboard_t *kbd; 334 atkbd_state_t *state; 335 keymap_t *keymap; 336 accentmap_t *accmap; 337 fkeytab_t *fkeymap; 338 int fkeymap_size; 339 int delay[2]; 340 int *data = (int *)arg; /* data[0]: controller, data[1]: irq */ 341 342 /* XXX */ 343 if (unit == ATKBD_DEFAULT) { 344 *kbdp = kbd = &default_kbd; 345 if (KBD_IS_INITIALIZED(kbd) && KBD_IS_CONFIGURED(kbd)) 346 return 0; 347 state = &default_kbd_state; 348 keymap = &default_keymap; 349 accmap = &default_accentmap; 350 fkeymap = default_fkeytab; 351 fkeymap_size = 352 sizeof(default_fkeytab)/sizeof(default_fkeytab[0]); 353 } else if (*kbdp == NULL) { 354 *kbdp = kbd = kmalloc(sizeof(*kbd), M_DEVBUF, M_WAITOK|M_ZERO); 355 state = kmalloc(sizeof(*state), M_DEVBUF, M_WAITOK|M_ZERO); 356 keymap = kmalloc(sizeof(key_map), M_DEVBUF, M_WAITOK); 357 accmap = kmalloc(sizeof(accent_map), M_DEVBUF, M_WAITOK); 358 fkeymap = kmalloc(sizeof(fkey_tab), M_DEVBUF, M_WAITOK); 359 fkeymap_size = sizeof(fkey_tab)/sizeof(fkey_tab[0]); 360 } else if (KBD_IS_INITIALIZED(*kbdp) && KBD_IS_CONFIGURED(*kbdp)) { 361 return 0; 362 } else { 363 kbd = *kbdp; 364 state = (atkbd_state_t *)kbd->kb_data; 365 bzero(state, sizeof(*state)); 366 keymap = kbd->kb_keymap; 367 accmap = kbd->kb_accentmap; 368 fkeymap = kbd->kb_fkeytab; 369 fkeymap_size = kbd->kb_fkeytab_size; 370 } 371 372 if (!KBD_IS_PROBED(kbd)) { 373 state->kbdc = atkbdc_open(data[0]); 374 if (state->kbdc == NULL) 375 return ENXIO; 376 kbd_init_struct(kbd, ATKBD_DRIVER_NAME, KB_OTHER, unit, flags, 377 KB_PRI_ATKBD, 0, 0); 378 bcopy(&key_map, keymap, sizeof(key_map)); 379 bcopy(&accent_map, accmap, sizeof(accent_map)); 380 bcopy(fkey_tab, fkeymap, 381 imin(fkeymap_size*sizeof(fkeymap[0]), sizeof(fkey_tab))); 382 kbd_set_maps(kbd, keymap, accmap, fkeymap, fkeymap_size); 383 kbd->kb_data = (void *)state; 384 385 if (probe_keyboard(state->kbdc, flags)) { /* shouldn't happen */ 386 if (flags & KB_CONF_FAIL_IF_NO_KBD) 387 return ENXIO; 388 } else { 389 KBD_FOUND_DEVICE(kbd); 390 } 391 atkbd_clear_state(kbd); 392 state->ks_mode = K_XLATE; 393 /* 394 * FIXME: set the initial value for lock keys in ks_state 395 * according to the BIOS data? 396 */ 397 KBD_PROBE_DONE(kbd); 398 } 399 if (!KBD_IS_INITIALIZED(kbd) && !(flags & KB_CONF_PROBE_ONLY)) { 400 kbd->kb_config = flags & ~KB_CONF_PROBE_ONLY; 401 if (KBD_HAS_DEVICE(kbd) 402 && init_keyboard(state->kbdc, &kbd->kb_type, kbd->kb_config) 403 && (kbd->kb_config & KB_CONF_FAIL_IF_NO_KBD)) 404 return ENXIO; 405 atkbd_ioctl(kbd, KDSETLED, (caddr_t)&state->ks_state); 406 get_typematic(kbd); 407 delay[0] = kbd->kb_delay1; 408 delay[1] = kbd->kb_delay2; 409 atkbd_ioctl(kbd, KDSETREPEAT, (caddr_t)delay); 410 KBD_INIT_DONE(kbd); 411 } 412 if (!KBD_IS_CONFIGURED(kbd)) { 413 if (kbd_register(kbd) < 0) 414 return ENXIO; 415 KBD_CONFIG_DONE(kbd); 416 } 417 418 return 0; 419 } 420 421 /* finish using this keyboard */ 422 static int 423 atkbd_term(keyboard_t *kbd) 424 { 425 kbd_unregister(kbd); 426 return 0; 427 } 428 429 /* keyboard interrupt routine */ 430 static int 431 atkbd_intr(keyboard_t *kbd, void *arg) 432 { 433 atkbd_state_t *state; 434 int delay[2]; 435 int c; 436 437 if (KBD_IS_ACTIVE(kbd) && KBD_IS_BUSY(kbd)) { 438 /* let the callback function to process the input */ 439 (*kbd->kb_callback.kc_func)(kbd, KBDIO_KEYINPUT, 440 kbd->kb_callback.kc_arg); 441 } else { 442 /* read and discard the input; no one is waiting for input */ 443 do { 444 c = atkbd_read_char(kbd, FALSE); 445 } while (c != NOKEY); 446 447 if (!KBD_HAS_DEVICE(kbd)) { 448 /* 449 * The keyboard was not detected before; 450 * it must have been reconnected! 451 */ 452 state = (atkbd_state_t *)kbd->kb_data; 453 init_keyboard(state->kbdc, &kbd->kb_type, 454 kbd->kb_config); 455 atkbd_ioctl(kbd, KDSETLED, (caddr_t)&state->ks_state); 456 get_typematic(kbd); 457 delay[0] = kbd->kb_delay1; 458 delay[1] = kbd->kb_delay2; 459 atkbd_ioctl(kbd, KDSETREPEAT, (caddr_t)delay); 460 KBD_FOUND_DEVICE(kbd); 461 } 462 } 463 return 0; 464 } 465 466 /* test the interface to the device */ 467 static int 468 atkbd_test_if(keyboard_t *kbd) 469 { 470 int error; 471 472 error = 0; 473 empty_both_buffers(((atkbd_state_t *)kbd->kb_data)->kbdc, 10); 474 crit_enter(); 475 if (!test_controller(((atkbd_state_t *)kbd->kb_data)->kbdc)) 476 error = EIO; 477 else if (test_kbd_port(((atkbd_state_t *)kbd->kb_data)->kbdc) != 0) 478 error = EIO; 479 crit_exit(); 480 481 return error; 482 } 483 484 /* 485 * Enable the access to the device; until this function is called, 486 * the client cannot read from the keyboard. 487 */ 488 static int 489 atkbd_enable(keyboard_t *kbd) 490 { 491 crit_enter(); 492 KBD_ACTIVATE(kbd); 493 crit_exit(); 494 return 0; 495 } 496 497 /* disallow the access to the device */ 498 static int 499 atkbd_disable(keyboard_t *kbd) 500 { 501 crit_enter(); 502 KBD_DEACTIVATE(kbd); 503 crit_exit(); 504 return 0; 505 } 506 507 /* read one byte from the keyboard if it's allowed */ 508 static int 509 atkbd_read(keyboard_t *kbd, int wait) 510 { 511 int c; 512 513 if (wait) 514 c = read_kbd_data(((atkbd_state_t *)kbd->kb_data)->kbdc); 515 else 516 c = read_kbd_data_no_wait(((atkbd_state_t *)kbd->kb_data)->kbdc); 517 if (c != -1) 518 ++kbd->kb_count; 519 return (KBD_IS_ACTIVE(kbd) ? c : -1); 520 } 521 522 /* check if data is waiting */ 523 static int 524 atkbd_check(keyboard_t *kbd) 525 { 526 if (!KBD_IS_ACTIVE(kbd)) 527 return FALSE; 528 return kbdc_data_ready(((atkbd_state_t *)kbd->kb_data)->kbdc); 529 } 530 531 /* read char from the keyboard */ 532 static u_int 533 atkbd_read_char(keyboard_t *kbd, int wait) 534 { 535 atkbd_state_t *state; 536 u_int action; 537 int scancode; 538 int keycode; 539 540 state = (atkbd_state_t *)kbd->kb_data; 541 next_code: 542 /* do we have a composed char to return? */ 543 if (!(state->ks_flags & COMPOSE) && (state->ks_composed_char > 0)) { 544 action = state->ks_composed_char; 545 state->ks_composed_char = 0; 546 if (action > UCHAR_MAX) 547 return ERRKEY; 548 return action; 549 } 550 551 /* see if there is something in the keyboard port */ 552 if (wait) { 553 do { 554 scancode = read_kbd_data(state->kbdc); 555 } while (scancode == -1); 556 } else { 557 scancode = read_kbd_data_no_wait(state->kbdc); 558 if (scancode == -1) 559 return NOKEY; 560 } 561 ++kbd->kb_count; 562 563 #if KBDIO_DEBUG >= 10 564 kprintf("atkbd_read_char(): scancode:0x%x\n", scancode); 565 #endif 566 567 /* return the byte as is for the K_RAW mode */ 568 if (state->ks_mode == K_RAW) 569 return scancode; 570 571 /* translate the scan code into a keycode */ 572 keycode = scancode & 0x7F; 573 switch (state->ks_prefix) { 574 case 0x00: /* normal scancode */ 575 switch(scancode) { 576 case 0xB8: /* left alt (compose key) released */ 577 if (state->ks_flags & COMPOSE) { 578 state->ks_flags &= ~COMPOSE; 579 if (state->ks_composed_char > UCHAR_MAX) 580 state->ks_composed_char = 0; 581 } 582 break; 583 case 0x38: /* left alt (compose key) pressed */ 584 if (!(state->ks_flags & COMPOSE)) { 585 state->ks_flags |= COMPOSE; 586 state->ks_composed_char = 0; 587 } 588 break; 589 case 0xE0: 590 case 0xE1: 591 state->ks_prefix = scancode; 592 goto next_code; 593 } 594 break; 595 case 0xE0: /* 0xE0 prefix */ 596 state->ks_prefix = 0; 597 switch (keycode) { 598 case 0x1C: /* right enter key */ 599 keycode = 0x59; 600 break; 601 case 0x1D: /* right ctrl key */ 602 keycode = 0x5A; 603 break; 604 case 0x35: /* keypad divide key */ 605 keycode = 0x5B; 606 break; 607 case 0x37: /* print scrn key */ 608 keycode = 0x5C; 609 break; 610 case 0x38: /* right alt key (alt gr) */ 611 keycode = 0x5D; 612 break; 613 case 0x46: /* ctrl-pause/break on AT 101 (see below) */ 614 keycode = 0x68; 615 break; 616 case 0x47: /* grey home key */ 617 keycode = 0x5E; 618 break; 619 case 0x48: /* grey up arrow key */ 620 keycode = 0x5F; 621 break; 622 case 0x49: /* grey page up key */ 623 keycode = 0x60; 624 break; 625 case 0x4B: /* grey left arrow key */ 626 keycode = 0x61; 627 break; 628 case 0x4D: /* grey right arrow key */ 629 keycode = 0x62; 630 break; 631 case 0x4F: /* grey end key */ 632 keycode = 0x63; 633 break; 634 case 0x50: /* grey down arrow key */ 635 keycode = 0x64; 636 break; 637 case 0x51: /* grey page down key */ 638 keycode = 0x65; 639 break; 640 case 0x52: /* grey insert key */ 641 keycode = 0x66; 642 break; 643 case 0x53: /* grey delete key */ 644 keycode = 0x67; 645 break; 646 /* the following 3 are only used on the MS "Natural" keyboard */ 647 case 0x5b: /* left Window key */ 648 keycode = 0x69; 649 break; 650 case 0x5c: /* right Window key */ 651 keycode = 0x6a; 652 break; 653 case 0x5d: /* menu key */ 654 keycode = 0x6b; 655 break; 656 default: /* ignore everything else */ 657 goto next_code; 658 } 659 break; 660 case 0xE1: /* 0xE1 prefix */ 661 /* 662 * The pause/break key on the 101 keyboard produces: 663 * E1-1D-45 E1-9D-C5 664 * Ctrl-pause/break produces: 665 * E0-46 E0-C6 (See above.) 666 */ 667 state->ks_prefix = 0; 668 if (keycode == 0x1D) 669 state->ks_prefix = 0x1D; 670 goto next_code; 671 /* NOT REACHED */ 672 case 0x1D: /* pause / break */ 673 state->ks_prefix = 0; 674 if (keycode != 0x45) 675 goto next_code; 676 keycode = 0x68; 677 break; 678 } 679 680 if (kbd->kb_type == KB_84) { 681 switch (keycode) { 682 case 0x37: /* *(numpad)/print screen */ 683 if (state->ks_flags & SHIFTS) 684 keycode = 0x5c; /* print screen */ 685 break; 686 case 0x45: /* num lock/pause */ 687 if (state->ks_flags & CTLS) 688 keycode = 0x68; /* pause */ 689 break; 690 case 0x46: /* scroll lock/break */ 691 if (state->ks_flags & CTLS) 692 keycode = 0x6c; /* break */ 693 break; 694 } 695 } else if (kbd->kb_type == KB_101) { 696 switch (keycode) { 697 case 0x5c: /* print screen */ 698 if (state->ks_flags & ALTS) 699 keycode = 0x54; /* sysrq */ 700 break; 701 case 0x68: /* pause/break */ 702 if (state->ks_flags & CTLS) 703 keycode = 0x6c; /* break */ 704 break; 705 } 706 } 707 708 /* return the key code in the K_CODE mode */ 709 if (state->ks_mode == K_CODE) 710 return (keycode | (scancode & 0x80)); 711 712 /* compose a character code */ 713 if (state->ks_flags & COMPOSE) { 714 switch (keycode | (scancode & 0x80)) { 715 /* key pressed, process it */ 716 case 0x47: case 0x48: case 0x49: /* keypad 7,8,9 */ 717 state->ks_composed_char *= 10; 718 state->ks_composed_char += keycode - 0x40; 719 if (state->ks_composed_char > UCHAR_MAX) 720 return ERRKEY; 721 goto next_code; 722 case 0x4B: case 0x4C: case 0x4D: /* keypad 4,5,6 */ 723 state->ks_composed_char *= 10; 724 state->ks_composed_char += keycode - 0x47; 725 if (state->ks_composed_char > UCHAR_MAX) 726 return ERRKEY; 727 goto next_code; 728 case 0x4F: case 0x50: case 0x51: /* keypad 1,2,3 */ 729 state->ks_composed_char *= 10; 730 state->ks_composed_char += keycode - 0x4E; 731 if (state->ks_composed_char > UCHAR_MAX) 732 return ERRKEY; 733 goto next_code; 734 case 0x52: /* keypad 0 */ 735 state->ks_composed_char *= 10; 736 if (state->ks_composed_char > UCHAR_MAX) 737 return ERRKEY; 738 goto next_code; 739 740 /* key released, no interest here */ 741 case 0xC7: case 0xC8: case 0xC9: /* keypad 7,8,9 */ 742 case 0xCB: case 0xCC: case 0xCD: /* keypad 4,5,6 */ 743 case 0xCF: case 0xD0: case 0xD1: /* keypad 1,2,3 */ 744 case 0xD2: /* keypad 0 */ 745 goto next_code; 746 747 case 0x38: /* left alt key */ 748 break; 749 750 default: 751 if (state->ks_composed_char > 0) { 752 state->ks_flags &= ~COMPOSE; 753 state->ks_composed_char = 0; 754 return ERRKEY; 755 } 756 break; 757 } 758 } 759 760 /* keycode to key action */ 761 action = genkbd_keyaction(kbd, keycode, scancode & 0x80, 762 &state->ks_state, &state->ks_accents); 763 if (action == NOKEY) 764 goto next_code; 765 else 766 return action; 767 } 768 769 /* check if char is waiting */ 770 static int 771 atkbd_check_char(keyboard_t *kbd) 772 { 773 atkbd_state_t *state; 774 775 if (!KBD_IS_ACTIVE(kbd)) 776 return FALSE; 777 state = (atkbd_state_t *)kbd->kb_data; 778 if (!(state->ks_flags & COMPOSE) && (state->ks_composed_char > 0)) 779 return TRUE; 780 return kbdc_data_ready(state->kbdc); 781 } 782 783 /* some useful control functions */ 784 static int 785 atkbd_ioctl(keyboard_t *kbd, u_long cmd, caddr_t arg) 786 { 787 /* trasnlate LED_XXX bits into the device specific bits */ 788 static u_char ledmap[8] = { 789 0, 4, 2, 6, 1, 5, 3, 7, 790 }; 791 atkbd_state_t *state = kbd->kb_data; 792 int error; 793 int i; 794 795 crit_enter(); 796 797 switch (cmd) { 798 799 case KDGKBMODE: /* get keyboard mode */ 800 *(int *)arg = state->ks_mode; 801 break; 802 case KDSKBMODE: /* set keyboard mode */ 803 switch (*(int *)arg) { 804 case K_XLATE: 805 if (state->ks_mode != K_XLATE) { 806 /* make lock key state and LED state match */ 807 state->ks_state &= ~LOCK_MASK; 808 state->ks_state |= KBD_LED_VAL(kbd); 809 } 810 /* FALL THROUGH */ 811 case K_RAW: 812 case K_CODE: 813 if (state->ks_mode != *(int *)arg) { 814 atkbd_clear_state(kbd); 815 state->ks_mode = *(int *)arg; 816 } 817 break; 818 default: 819 crit_exit(); 820 return EINVAL; 821 } 822 break; 823 824 case KDGETLED: /* get keyboard LED */ 825 *(int *)arg = KBD_LED_VAL(kbd); 826 break; 827 case KDSETLED: /* set keyboard LED */ 828 /* NOTE: lock key state in ks_state won't be changed */ 829 if (*(int *)arg & ~LOCK_MASK) { 830 crit_exit(); 831 return EINVAL; 832 } 833 i = *(int *)arg; 834 /* replace CAPS LED with ALTGR LED for ALTGR keyboards */ 835 if (state->ks_mode == K_XLATE && 836 kbd->kb_keymap->n_keys > ALTGR_OFFSET) { 837 if (i & ALKED) 838 i |= CLKED; 839 else 840 i &= ~CLKED; 841 } 842 if (KBD_HAS_DEVICE(kbd)) { 843 error = write_kbd(state->kbdc, KBDC_SET_LEDS, 844 ledmap[i & LED_MASK]); 845 if (error) { 846 crit_exit(); 847 return error; 848 } 849 } 850 KBD_LED_VAL(kbd) = *(int *)arg; 851 break; 852 853 case KDGKBSTATE: /* get lock key state */ 854 *(int *)arg = state->ks_state & LOCK_MASK; 855 break; 856 case KDSKBSTATE: /* set lock key state */ 857 if (*(int *)arg & ~LOCK_MASK) { 858 crit_exit(); 859 return EINVAL; 860 } 861 state->ks_state &= ~LOCK_MASK; 862 state->ks_state |= *(int *)arg; 863 crit_exit(); 864 /* set LEDs and quit */ 865 return atkbd_ioctl(kbd, KDSETLED, arg); 866 867 case KDSETREPEAT: /* set keyboard repeat rate (new interface) */ 868 crit_exit(); 869 if (!KBD_HAS_DEVICE(kbd)) 870 return 0; 871 i = typematic(((int *)arg)[0], ((int *)arg)[1]); 872 error = write_kbd(state->kbdc, KBDC_SET_TYPEMATIC, i); 873 if (error == 0) { 874 kbd->kb_delay1 = typematic_delay(i); 875 kbd->kb_delay2 = typematic_rate(i); 876 } 877 return error; 878 879 case KDSETRAD: /* set keyboard repeat rate (old interface) */ 880 crit_exit(); 881 if (!KBD_HAS_DEVICE(kbd)) 882 return 0; 883 error = write_kbd(state->kbdc, KBDC_SET_TYPEMATIC, *(int *)arg); 884 if (error == 0) { 885 kbd->kb_delay1 = typematic_delay(*(int *)arg); 886 kbd->kb_delay2 = typematic_rate(*(int *)arg); 887 } 888 return error; 889 890 case PIO_KEYMAP: /* set keyboard translation table */ 891 case PIO_KEYMAPENT: /* set keyboard translation table entry */ 892 case PIO_DEADKEYMAP: /* set accent key translation table */ 893 state->ks_accents = 0; 894 /* FALL THROUGH */ 895 default: 896 crit_exit(); 897 return genkbd_commonioctl(kbd, cmd, arg); 898 } 899 900 crit_exit(); 901 return 0; 902 } 903 904 /* lock the access to the keyboard */ 905 static int 906 atkbd_lock(keyboard_t *kbd, int lock) 907 { 908 return kbdc_lock(((atkbd_state_t *)kbd->kb_data)->kbdc, lock); 909 } 910 911 /* clear the internal state of the keyboard */ 912 static void 913 atkbd_clear_state(keyboard_t *kbd) 914 { 915 atkbd_state_t *state; 916 917 state = (atkbd_state_t *)kbd->kb_data; 918 state->ks_flags = 0; 919 state->ks_polling = 0; 920 state->ks_state &= LOCK_MASK; /* preserve locking key state */ 921 state->ks_accents = 0; 922 state->ks_composed_char = 0; 923 #if 0 924 state->ks_prefix = 0; /* XXX */ 925 #endif 926 } 927 928 /* save the internal state */ 929 static int 930 atkbd_get_state(keyboard_t *kbd, void *buf, size_t len) 931 { 932 if (len == 0) 933 return sizeof(atkbd_state_t); 934 if (len < sizeof(atkbd_state_t)) 935 return -1; 936 bcopy(kbd->kb_data, buf, sizeof(atkbd_state_t)); 937 return 0; 938 } 939 940 /* set the internal state */ 941 static int 942 atkbd_set_state(keyboard_t *kbd, void *buf, size_t len) 943 { 944 if (len < sizeof(atkbd_state_t)) 945 return ENOMEM; 946 if (((atkbd_state_t *)kbd->kb_data)->kbdc 947 != ((atkbd_state_t *)buf)->kbdc) 948 return ENOMEM; 949 bcopy(buf, kbd->kb_data, sizeof(atkbd_state_t)); 950 return 0; 951 } 952 953 static int 954 atkbd_poll(keyboard_t *kbd, int on) 955 { 956 atkbd_state_t *state; 957 958 state = (atkbd_state_t *)kbd->kb_data; 959 crit_enter(); 960 if (on) 961 ++state->ks_polling; 962 else 963 --state->ks_polling; 964 crit_exit(); 965 return 0; 966 } 967 968 /* local functions */ 969 970 static int 971 get_typematic(keyboard_t *kbd) 972 { 973 #ifdef __i386__ 974 /* 975 * Only some systems allow us to retrieve the keyboard repeat 976 * rate previously set via the BIOS... 977 */ 978 struct vm86frame vmf; 979 u_int32_t p; 980 981 bzero(&vmf, sizeof(vmf)); 982 vmf.vmf_ax = 0xc000; 983 vm86_intcall(0x15, &vmf); 984 if ((vmf.vmf_eflags & PSL_C) || vmf.vmf_ah) 985 return ENODEV; 986 p = BIOS_PADDRTOVADDR(((u_int32_t)vmf.vmf_es << 4) + vmf.vmf_bx); 987 if ((readb(p + 6) & 0x40) == 0) /* int 16, function 0x09 supported? */ 988 return ENODEV; 989 vmf.vmf_ax = 0x0900; 990 vm86_intcall(0x16, &vmf); 991 if ((vmf.vmf_al & 0x08) == 0) /* int 16, function 0x0306 supported? */ 992 return ENODEV; 993 vmf.vmf_ax = 0x0306; 994 vm86_intcall(0x16, &vmf); 995 kbd->kb_delay1 = typematic_delay(vmf.vmf_bh << 5); 996 kbd->kb_delay2 = typematic_rate(vmf.vmf_bl); 997 return 0; 998 #else 999 return ENODEV; 1000 #endif /* __i386__ */ 1001 } 1002 1003 static int 1004 setup_kbd_port(KBDC kbdc, int port, int intr) 1005 { 1006 if (!set_controller_command_byte(kbdc, 1007 KBD_KBD_CONTROL_BITS, 1008 ((port) ? KBD_ENABLE_KBD_PORT : KBD_DISABLE_KBD_PORT) 1009 | ((intr) ? KBD_ENABLE_KBD_INT : KBD_DISABLE_KBD_INT))) 1010 return 1; 1011 return 0; 1012 } 1013 1014 static int 1015 get_kbd_echo(KBDC kbdc) 1016 { 1017 /* enable the keyboard port, but disable the keyboard intr. */ 1018 if (setup_kbd_port(kbdc, TRUE, FALSE)) 1019 /* CONTROLLER ERROR: there is very little we can do... */ 1020 return ENXIO; 1021 1022 /* see if something is present */ 1023 write_kbd_command(kbdc, KBDC_ECHO); 1024 if (read_kbd_data(kbdc) != KBD_ECHO) { 1025 empty_both_buffers(kbdc, 10); 1026 test_controller(kbdc); 1027 test_kbd_port(kbdc); 1028 return ENXIO; 1029 } 1030 1031 /* enable the keyboard port and intr. */ 1032 if (setup_kbd_port(kbdc, TRUE, TRUE)) { 1033 /* 1034 * CONTROLLER ERROR 1035 * This is serious; the keyboard intr is left disabled! 1036 */ 1037 return ENXIO; 1038 } 1039 1040 return 0; 1041 } 1042 1043 static int 1044 probe_keyboard(KBDC kbdc, int flags) 1045 { 1046 /* 1047 * Don't try to print anything in this function. The low-level 1048 * console may not have been initialized yet... 1049 */ 1050 int err; 1051 int c; 1052 int m; 1053 1054 if (!kbdc_lock(kbdc, TRUE)) { 1055 /* driver error? */ 1056 return ENXIO; 1057 } 1058 1059 /* temporarily block data transmission from the keyboard */ 1060 write_controller_command(kbdc, KBDC_DISABLE_KBD_PORT); 1061 1062 /* flush any noise in the buffer */ 1063 empty_both_buffers(kbdc, 100); 1064 1065 /* save the current keyboard controller command byte */ 1066 m = kbdc_get_device_mask(kbdc) & ~KBD_KBD_CONTROL_BITS; 1067 c = get_controller_command_byte(kbdc); 1068 if (c == -1) { 1069 /* CONTROLLER ERROR */ 1070 kbdc_set_device_mask(kbdc, m); 1071 kbdc_lock(kbdc, FALSE); 1072 return ENXIO; 1073 } 1074 1075 /* 1076 * The keyboard may have been screwed up by the boot block. 1077 * We may just be able to recover from error by testing the controller 1078 * and the keyboard port. The controller command byte needs to be 1079 * saved before this recovery operation, as some controllers seem 1080 * to set the command byte to particular values. 1081 */ 1082 test_controller(kbdc); 1083 test_kbd_port(kbdc); 1084 1085 err = get_kbd_echo(kbdc); 1086 1087 /* 1088 * Even if the keyboard doesn't seem to be present (err != 0), 1089 * we shall enable the keyboard port and interrupt so that 1090 * the driver will be operable when the keyboard is attached 1091 * to the system later. It is NOT recommended to hot-plug 1092 * the AT keyboard, but many people do so... 1093 */ 1094 kbdc_set_device_mask(kbdc, m | KBD_KBD_CONTROL_BITS); 1095 setup_kbd_port(kbdc, TRUE, TRUE); 1096 #if 0 1097 if (err == 0) { 1098 kbdc_set_device_mask(kbdc, m | KBD_KBD_CONTROL_BITS); 1099 } else { 1100 /* try to restore the command byte as before */ 1101 set_controller_command_byte(kbdc, 0xff, c); 1102 kbdc_set_device_mask(kbdc, m); 1103 } 1104 #endif 1105 1106 kbdc_lock(kbdc, FALSE); 1107 return err; 1108 } 1109 1110 static int 1111 init_keyboard(KBDC kbdc, int *type, int flags) 1112 { 1113 int codeset; 1114 int id; 1115 int c; 1116 1117 if (!kbdc_lock(kbdc, TRUE)) { 1118 /* driver error? */ 1119 return EIO; 1120 } 1121 1122 /* temporarily block data transmission from the keyboard */ 1123 write_controller_command(kbdc, KBDC_DISABLE_KBD_PORT); 1124 1125 /* save the current controller command byte */ 1126 empty_both_buffers(kbdc, 200); 1127 c = get_controller_command_byte(kbdc); 1128 if (c == -1) { 1129 /* CONTROLLER ERROR */ 1130 kbdc_lock(kbdc, FALSE); 1131 kprintf("atkbd: unable to get the current command byte value.\n"); 1132 return EIO; 1133 } 1134 if (bootverbose) 1135 kprintf("atkbd: the current kbd controller command byte %04x\n", 1136 c); 1137 #if 0 1138 /* override the keyboard lock switch */ 1139 c |= KBD_OVERRIDE_KBD_LOCK; 1140 #endif 1141 1142 /* enable the keyboard port, but disable the keyboard intr. */ 1143 if (setup_kbd_port(kbdc, TRUE, FALSE)) { 1144 /* CONTROLLER ERROR: there is very little we can do... */ 1145 kprintf("atkbd: unable to set the command byte.\n"); 1146 kbdc_lock(kbdc, FALSE); 1147 return EIO; 1148 } 1149 1150 /* 1151 * Check if we have an XT keyboard before we attempt to reset it. 1152 * The procedure assumes that the keyboard and the controller have 1153 * been set up properly by BIOS and have not been messed up 1154 * during the boot process. 1155 */ 1156 codeset = -1; 1157 if (flags & KB_CONF_ALT_SCANCODESET) 1158 /* the user says there is a XT keyboard */ 1159 codeset = 1; 1160 #ifdef KBD_DETECT_XT_KEYBOARD 1161 else if ((c & KBD_TRANSLATION) == 0) { 1162 /* SET_SCANCODE_SET is not always supported; ignore error */ 1163 if (send_kbd_command_and_data(kbdc, KBDC_SET_SCANCODE_SET, 0) 1164 == KBD_ACK) 1165 codeset = read_kbd_data(kbdc); 1166 } 1167 if (bootverbose) 1168 kprintf("atkbd: scancode set %d\n", codeset); 1169 #endif /* KBD_DETECT_XT_KEYBOARD */ 1170 1171 *type = KB_OTHER; 1172 id = get_kbd_id(kbdc); 1173 switch(id) { 1174 case 0x41ab: /* 101/102/... Enhanced */ 1175 case 0x83ab: /* ditto */ 1176 case 0x54ab: /* SpaceSaver */ 1177 case 0x84ab: /* ditto */ 1178 #if 0 1179 case 0x90ab: /* 'G' */ 1180 case 0x91ab: /* 'P' */ 1181 case 0x92ab: /* 'A' */ 1182 #endif 1183 *type = KB_101; 1184 break; 1185 case -1: /* AT 84 keyboard doesn't return ID */ 1186 *type = KB_84; 1187 break; 1188 default: 1189 break; 1190 } 1191 if (bootverbose) 1192 kprintf("atkbd: keyboard ID 0x%x (%d)\n", id, *type); 1193 1194 /* reset keyboard hardware */ 1195 if (!(flags & KB_CONF_NO_RESET) && !reset_kbd(kbdc)) { 1196 /* 1197 * KEYBOARD ERROR 1198 * Keyboard reset may fail either because the keyboard 1199 * doen't exist, or because the keyboard doesn't pass 1200 * the self-test, or the keyboard controller on the 1201 * motherboard and the keyboard somehow fail to shake hands. 1202 * It is just possible, particularly in the last case, 1203 * that the keyoard controller may be left in a hung state. 1204 * test_controller() and test_kbd_port() appear to bring 1205 * the keyboard controller back (I don't know why and how, 1206 * though.) 1207 */ 1208 empty_both_buffers(kbdc, 10); 1209 test_controller(kbdc); 1210 test_kbd_port(kbdc); 1211 /* 1212 * We could disable the keyboard port and interrupt... but, 1213 * the keyboard may still exist (see above). 1214 */ 1215 set_controller_command_byte(kbdc, 0xff, c); 1216 kbdc_lock(kbdc, FALSE); 1217 if (bootverbose) 1218 kprintf("atkbd: failed to reset the keyboard.\n"); 1219 return EIO; 1220 } 1221 1222 /* 1223 * Allow us to set the XT_KEYBD flag in UserConfig so that keyboards 1224 * such as those on the IBM ThinkPad laptop computers can be used 1225 * with the standard console driver. 1226 */ 1227 if (codeset == 1) { 1228 if (send_kbd_command_and_data(kbdc, 1229 KBDC_SET_SCANCODE_SET, codeset) == KBD_ACK) { 1230 /* XT kbd doesn't need scan code translation */ 1231 c &= ~KBD_TRANSLATION; 1232 } else { 1233 /* 1234 * KEYBOARD ERROR 1235 * The XT kbd isn't usable unless the proper scan 1236 * code set is selected. 1237 */ 1238 set_controller_command_byte(kbdc, 0xff, c); 1239 kbdc_lock(kbdc, FALSE); 1240 kprintf("atkbd: unable to set the XT keyboard mode.\n"); 1241 return EIO; 1242 } 1243 } 1244 1245 /* enable the keyboard port and intr. */ 1246 if (!set_controller_command_byte(kbdc, 1247 KBD_KBD_CONTROL_BITS | KBD_TRANSLATION | KBD_OVERRIDE_KBD_LOCK, 1248 (c & (KBD_TRANSLATION | KBD_OVERRIDE_KBD_LOCK)) 1249 | KBD_ENABLE_KBD_PORT | KBD_ENABLE_KBD_INT)) { 1250 /* 1251 * CONTROLLER ERROR 1252 * This is serious; we are left with the disabled 1253 * keyboard intr. 1254 */ 1255 set_controller_command_byte(kbdc, 0xff, c); 1256 kbdc_lock(kbdc, FALSE); 1257 kprintf("atkbd: unable to enable the keyboard port and intr.\n"); 1258 return EIO; 1259 } 1260 1261 kbdc_lock(kbdc, FALSE); 1262 return 0; 1263 } 1264 1265 static int 1266 write_kbd(KBDC kbdc, int command, int data) 1267 { 1268 /* prevent the timeout routine from polling the keyboard */ 1269 if (!kbdc_lock(kbdc, TRUE)) 1270 return EBUSY; 1271 1272 /* disable the keyboard and mouse interrupt */ 1273 crit_enter(); 1274 #if 0 1275 c = get_controller_command_byte(kbdc); 1276 if ((c == -1) 1277 || !set_controller_command_byte(kbdc, 1278 kbdc_get_device_mask(kbdc), 1279 KBD_DISABLE_KBD_PORT | KBD_DISABLE_KBD_INT 1280 | KBD_DISABLE_AUX_PORT | KBD_DISABLE_AUX_INT)) { 1281 /* CONTROLLER ERROR */ 1282 kbdc_lock(kbdc, FALSE); 1283 crit_exit(); 1284 return EIO; 1285 } 1286 /* 1287 * Now that the keyboard controller is told not to generate 1288 * the keyboard and mouse interrupts, call `splx()' to allow 1289 * the other tty interrupts. The clock interrupt may also occur, 1290 * but the timeout routine (`scrn_timer()') will be blocked 1291 * by the lock flag set via `kbdc_lock()' 1292 */ 1293 crit_exit(); 1294 #endif 1295 1296 if (send_kbd_command_and_data(kbdc, command, data) != KBD_ACK) 1297 send_kbd_command(kbdc, KBDC_ENABLE_KBD); 1298 1299 #if 0 1300 /* restore the interrupts */ 1301 if (!set_controller_command_byte(kbdc, 1302 kbdc_get_device_mask(kbdc), 1303 c & (KBD_KBD_CONTROL_BITS | KBD_AUX_CONTROL_BITS))) { 1304 /* CONTROLLER ERROR */ 1305 } 1306 #else 1307 crit_exit(); 1308 #endif 1309 kbdc_lock(kbdc, FALSE); 1310 1311 return 0; 1312 } 1313 1314 static int 1315 get_kbd_id(KBDC kbdc) 1316 { 1317 int id1, id2; 1318 1319 empty_both_buffers(kbdc, 10); 1320 id1 = id2 = -1; 1321 if (send_kbd_command(kbdc, KBDC_SEND_DEV_ID) != KBD_ACK) 1322 return -1; 1323 1324 DELAY(10000); /* 10 msec delay */ 1325 id1 = read_kbd_data(kbdc); 1326 if (id1 != -1) 1327 id2 = read_kbd_data(kbdc); 1328 1329 if ((id1 == -1) || (id2 == -1)) { 1330 empty_both_buffers(kbdc, 10); 1331 test_controller(kbdc); 1332 test_kbd_port(kbdc); 1333 return -1; 1334 } 1335 return ((id2 << 8) | id1); 1336 } 1337 1338 static int delays[] = { 250, 500, 750, 1000 }; 1339 static int rates[] = { 34, 38, 42, 46, 50, 55, 59, 63, 1340 68, 76, 84, 92, 100, 110, 118, 126, 1341 136, 152, 168, 184, 200, 220, 236, 252, 1342 272, 304, 336, 368, 400, 440, 472, 504 }; 1343 1344 static int 1345 typematic_delay(int i) 1346 { 1347 return delays[(i >> 5) & 3]; 1348 } 1349 1350 static int 1351 typematic_rate(int i) 1352 { 1353 return rates[i & 0x1f]; 1354 } 1355 1356 static int 1357 typematic(int delay, int rate) 1358 { 1359 int value; 1360 int i; 1361 1362 for (i = sizeof(delays)/sizeof(delays[0]) - 1; i > 0; --i) { 1363 if (delay >= delays[i]) 1364 break; 1365 } 1366 value = i << 5; 1367 for (i = sizeof(rates)/sizeof(rates[0]) - 1; i > 0; --i) { 1368 if (rate >= rates[i]) 1369 break; 1370 } 1371 value |= i; 1372 return value; 1373 } 1374