Now available: The Design and Implementation of the FreeBSD Operating System (Second Edition)
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sys/dev/atkbdc/atkbd.c
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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 */ 27 28 #include <sys/cdefs.h> 29 __FBSDID("$FreeBSD: releng/9.0/sys/dev/atkbdc/atkbd.c 224126 2011-07-17 08:19:19Z ed $"); 30 31 #include "opt_compat.h" 32 #include "opt_kbd.h" 33 #include "opt_atkbd.h" 34 35 #include <sys/param.h> 36 #include <sys/systm.h> 37 #include <sys/kernel.h> 38 #include <sys/bus.h> 39 #include <sys/eventhandler.h> 40 #include <sys/proc.h> 41 #include <sys/limits.h> 42 #include <sys/malloc.h> 43 44 #include <machine/bus.h> 45 #include <machine/resource.h> 46 47 #if defined(__i386__) || defined(__amd64__) 48 #include <machine/md_var.h> 49 #include <machine/psl.h> 50 #include <compat/x86bios/x86bios.h> 51 #include <machine/pc/bios.h> 52 53 #include <vm/vm.h> 54 #include <vm/pmap.h> 55 #include <vm/vm_param.h> 56 57 #include <isa/isareg.h> 58 #endif /* __i386__ || __amd64__ */ 59 60 #include <sys/kbio.h> 61 #include <dev/kbd/kbdreg.h> 62 #include <dev/atkbdc/atkbdreg.h> 63 #include <dev/atkbdc/atkbdcreg.h> 64 65 static timeout_t atkbd_timeout; 66 static void atkbd_shutdown_final(void *v); 67 68 int 69 atkbd_probe_unit(int unit, int ctlr, int irq, int flags) 70 { 71 keyboard_switch_t *sw; 72 int args[2]; 73 int error; 74 75 sw = kbd_get_switch(ATKBD_DRIVER_NAME); 76 if (sw == NULL) 77 return ENXIO; 78 79 args[0] = ctlr; 80 args[1] = irq; 81 error = (*sw->probe)(unit, args, flags); 82 if (error) 83 return error; 84 return 0; 85 } 86 87 int 88 atkbd_attach_unit(int unit, keyboard_t **kbd, int ctlr, int irq, int flags) 89 { 90 keyboard_switch_t *sw; 91 int args[2]; 92 int error; 93 94 sw = kbd_get_switch(ATKBD_DRIVER_NAME); 95 if (sw == NULL) 96 return ENXIO; 97 98 /* reset, initialize and enable the device */ 99 args[0] = ctlr; 100 args[1] = irq; 101 *kbd = NULL; 102 error = (*sw->probe)(unit, args, flags); 103 if (error) 104 return error; 105 error = (*sw->init)(unit, kbd, args, flags); 106 if (error) 107 return error; 108 (*sw->enable)(*kbd); 109 110 #ifdef KBD_INSTALL_CDEV 111 /* attach a virtual keyboard cdev */ 112 error = kbd_attach(*kbd); 113 if (error) 114 return error; 115 #endif 116 117 /* 118 * This is a kludge to compensate for lost keyboard interrupts. 119 * A similar code used to be in syscons. See below. XXX 120 */ 121 atkbd_timeout(*kbd); 122 123 if (bootverbose) 124 (*sw->diag)(*kbd, bootverbose); 125 126 EVENTHANDLER_REGISTER(shutdown_final, atkbd_shutdown_final, *kbd, 127 SHUTDOWN_PRI_DEFAULT); 128 129 return 0; 130 } 131 132 static void 133 atkbd_timeout(void *arg) 134 { 135 keyboard_t *kbd; 136 int s; 137 138 /* 139 * The original text of the following comments are extracted 140 * from syscons.c (1.287) 141 * 142 * With release 2.1 of the Xaccel server, the keyboard is left 143 * hanging pretty often. Apparently an interrupt from the 144 * keyboard is lost, and I don't know why (yet). 145 * This ugly hack calls the low-level interrupt routine if input 146 * is ready for the keyboard and conveniently hides the problem. XXX 147 * 148 * Try removing anything stuck in the keyboard controller; whether 149 * it's a keyboard scan code or mouse data. The low-level 150 * interrupt routine doesn't read the mouse data directly, 151 * but the keyboard controller driver will, as a side effect. 152 */ 153 /* 154 * And here is bde's original comment about this: 155 * 156 * This is necessary to handle edge triggered interrupts - if we 157 * returned when our IRQ is high due to unserviced input, then there 158 * would be no more keyboard IRQs until the keyboard is reset by 159 * external powers. 160 * 161 * The keyboard apparently unwedges the irq in most cases. 162 */ 163 s = spltty(); 164 kbd = (keyboard_t *)arg; 165 if (kbdd_lock(kbd, TRUE)) { 166 /* 167 * We have seen the lock flag is not set. Let's reset 168 * the flag early, otherwise the LED update routine fails 169 * which may want the lock during the interrupt routine. 170 */ 171 kbdd_lock(kbd, FALSE); 172 if (kbdd_check_char(kbd)) 173 kbdd_intr(kbd, NULL); 174 } 175 splx(s); 176 timeout(atkbd_timeout, arg, hz/10); 177 } 178 179 /* LOW-LEVEL */ 180 181 #define ATKBD_DEFAULT 0 182 183 typedef struct atkbd_state { 184 KBDC kbdc; /* keyboard controller */ 185 int ks_mode; /* input mode (K_XLATE,K_RAW,K_CODE) */ 186 int ks_flags; /* flags */ 187 #define COMPOSE (1 << 0) 188 int ks_polling; 189 int ks_state; /* shift/lock key state */ 190 int ks_accents; /* accent key index (> 0) */ 191 u_int ks_composed_char; /* composed char code (> 0) */ 192 u_char ks_prefix; /* AT scan code prefix */ 193 } atkbd_state_t; 194 195 /* keyboard driver declaration */ 196 static int atkbd_configure(int flags); 197 static kbd_probe_t atkbd_probe; 198 static kbd_init_t atkbd_init; 199 static kbd_term_t atkbd_term; 200 static kbd_intr_t atkbd_intr; 201 static kbd_test_if_t atkbd_test_if; 202 static kbd_enable_t atkbd_enable; 203 static kbd_disable_t atkbd_disable; 204 static kbd_read_t atkbd_read; 205 static kbd_check_t atkbd_check; 206 static kbd_read_char_t atkbd_read_char; 207 static kbd_check_char_t atkbd_check_char; 208 static kbd_ioctl_t atkbd_ioctl; 209 static kbd_lock_t atkbd_lock; 210 static kbd_clear_state_t atkbd_clear_state; 211 static kbd_get_state_t atkbd_get_state; 212 static kbd_set_state_t atkbd_set_state; 213 static kbd_poll_mode_t atkbd_poll; 214 215 static keyboard_switch_t atkbdsw = { 216 atkbd_probe, 217 atkbd_init, 218 atkbd_term, 219 atkbd_intr, 220 atkbd_test_if, 221 atkbd_enable, 222 atkbd_disable, 223 atkbd_read, 224 atkbd_check, 225 atkbd_read_char, 226 atkbd_check_char, 227 atkbd_ioctl, 228 atkbd_lock, 229 atkbd_clear_state, 230 atkbd_get_state, 231 atkbd_set_state, 232 genkbd_get_fkeystr, 233 atkbd_poll, 234 genkbd_diag, 235 }; 236 237 KEYBOARD_DRIVER(atkbd, atkbdsw, atkbd_configure); 238 239 /* local functions */ 240 static int get_typematic(keyboard_t *kbd); 241 static int setup_kbd_port(KBDC kbdc, int port, int intr); 242 static int get_kbd_echo(KBDC kbdc); 243 static int probe_keyboard(KBDC kbdc, int flags); 244 static int init_keyboard(KBDC kbdc, int *type, int flags); 245 static int write_kbd(KBDC kbdc, int command, int data); 246 static int get_kbd_id(KBDC kbdc); 247 static int typematic(int delay, int rate); 248 static int typematic_delay(int delay); 249 static int typematic_rate(int rate); 250 251 /* local variables */ 252 253 /* the initial key map, accent map and fkey strings */ 254 #ifdef ATKBD_DFLT_KEYMAP 255 #define KBD_DFLT_KEYMAP 256 #include "atkbdmap.h" 257 #endif 258 #include <dev/kbd/kbdtables.h> 259 260 /* structures for the default keyboard */ 261 static keyboard_t default_kbd; 262 static atkbd_state_t default_kbd_state; 263 static keymap_t default_keymap; 264 static accentmap_t default_accentmap; 265 static fkeytab_t default_fkeytab[NUM_FKEYS]; 266 267 /* 268 * The back door to the keyboard driver! 269 * This function is called by the console driver, via the kbdio module, 270 * to tickle keyboard drivers when the low-level console is being initialized. 271 * Almost nothing in the kernel has been initialied yet. Try to probe 272 * keyboards if possible. 273 * NOTE: because of the way the low-level console is initialized, this routine 274 * may be called more than once!! 275 */ 276 static int 277 atkbd_configure(int flags) 278 { 279 keyboard_t *kbd; 280 int arg[2]; 281 int i; 282 283 /* 284 * Probe the keyboard controller, if not present or if the driver 285 * is disabled, unregister the keyboard if any. 286 */ 287 if (atkbdc_configure() != 0 || 288 resource_disabled("atkbd", ATKBD_DEFAULT)) { 289 i = kbd_find_keyboard(ATKBD_DRIVER_NAME, ATKBD_DEFAULT); 290 if (i >= 0) { 291 kbd = kbd_get_keyboard(i); 292 kbd_unregister(kbd); 293 kbd->kb_flags &= ~KB_REGISTERED; 294 } 295 return 0; 296 } 297 298 /* XXX: a kludge to obtain the device configuration flags */ 299 if (resource_int_value("atkbd", ATKBD_DEFAULT, "flags", &i) == 0) 300 flags |= i; 301 302 /* probe the default keyboard */ 303 arg[0] = -1; 304 arg[1] = -1; 305 kbd = NULL; 306 if (atkbd_probe(ATKBD_DEFAULT, arg, flags)) 307 return 0; 308 if (atkbd_init(ATKBD_DEFAULT, &kbd, arg, flags)) 309 return 0; 310 311 /* return the number of found keyboards */ 312 return 1; 313 } 314 315 /* low-level functions */ 316 317 /* detect a keyboard */ 318 static int 319 atkbd_probe(int unit, void *arg, int flags) 320 { 321 KBDC kbdc; 322 int *data = (int *)arg; /* data[0]: controller, data[1]: irq */ 323 324 /* XXX */ 325 if (unit == ATKBD_DEFAULT) { 326 if (KBD_IS_PROBED(&default_kbd)) 327 return 0; 328 } 329 330 kbdc = atkbdc_open(data[0]); 331 if (kbdc == NULL) 332 return ENXIO; 333 if (probe_keyboard(kbdc, flags)) { 334 if (flags & KB_CONF_FAIL_IF_NO_KBD) 335 return ENXIO; 336 } 337 return 0; 338 } 339 340 /* reset and initialize the device */ 341 static int 342 atkbd_init(int unit, keyboard_t **kbdp, void *arg, int flags) 343 { 344 keyboard_t *kbd; 345 atkbd_state_t *state; 346 keymap_t *keymap; 347 accentmap_t *accmap; 348 fkeytab_t *fkeymap; 349 int fkeymap_size; 350 int delay[2]; 351 int *data = (int *)arg; /* data[0]: controller, data[1]: irq */ 352 int error, needfree; 353 354 /* XXX */ 355 if (unit == ATKBD_DEFAULT) { 356 *kbdp = kbd = &default_kbd; 357 if (KBD_IS_INITIALIZED(kbd) && KBD_IS_CONFIGURED(kbd)) 358 return 0; 359 state = &default_kbd_state; 360 keymap = &default_keymap; 361 accmap = &default_accentmap; 362 fkeymap = default_fkeytab; 363 fkeymap_size = 364 sizeof(default_fkeytab)/sizeof(default_fkeytab[0]); 365 needfree = 0; 366 } else if (*kbdp == NULL) { 367 *kbdp = kbd = malloc(sizeof(*kbd), M_DEVBUF, M_NOWAIT | M_ZERO); 368 state = malloc(sizeof(*state), M_DEVBUF, M_NOWAIT | M_ZERO); 369 /* NB: these will always be initialized 'cuz !KBD_IS_PROBED */ 370 keymap = malloc(sizeof(key_map), M_DEVBUF, M_NOWAIT); 371 accmap = malloc(sizeof(accent_map), M_DEVBUF, M_NOWAIT); 372 fkeymap = malloc(sizeof(fkey_tab), M_DEVBUF, M_NOWAIT); 373 fkeymap_size = sizeof(fkey_tab)/sizeof(fkey_tab[0]); 374 needfree = 1; 375 if ((kbd == NULL) || (state == NULL) || (keymap == NULL) 376 || (accmap == NULL) || (fkeymap == NULL)) { 377 error = ENOMEM; 378 goto bad; 379 } 380 } else if (KBD_IS_INITIALIZED(*kbdp) && KBD_IS_CONFIGURED(*kbdp)) { 381 return 0; 382 } else { 383 kbd = *kbdp; 384 state = (atkbd_state_t *)kbd->kb_data; 385 bzero(state, sizeof(*state)); 386 keymap = kbd->kb_keymap; 387 accmap = kbd->kb_accentmap; 388 fkeymap = kbd->kb_fkeytab; 389 fkeymap_size = kbd->kb_fkeytab_size; 390 needfree = 0; 391 } 392 393 if (!KBD_IS_PROBED(kbd)) { 394 state->kbdc = atkbdc_open(data[0]); 395 if (state->kbdc == NULL) { 396 error = ENXIO; 397 goto bad; 398 } 399 kbd_init_struct(kbd, ATKBD_DRIVER_NAME, KB_OTHER, unit, flags, 400 0, 0); 401 bcopy(&key_map, keymap, sizeof(key_map)); 402 bcopy(&accent_map, accmap, sizeof(accent_map)); 403 bcopy(fkey_tab, fkeymap, 404 imin(fkeymap_size*sizeof(fkeymap[0]), sizeof(fkey_tab))); 405 kbd_set_maps(kbd, keymap, accmap, fkeymap, fkeymap_size); 406 kbd->kb_data = (void *)state; 407 408 if (probe_keyboard(state->kbdc, flags)) { /* shouldn't happen */ 409 if (flags & KB_CONF_FAIL_IF_NO_KBD) { 410 error = ENXIO; 411 goto bad; 412 } 413 } else { 414 KBD_FOUND_DEVICE(kbd); 415 } 416 atkbd_clear_state(kbd); 417 state->ks_mode = K_XLATE; 418 /* 419 * FIXME: set the initial value for lock keys in ks_state 420 * according to the BIOS data? 421 */ 422 KBD_PROBE_DONE(kbd); 423 } 424 if (!KBD_IS_INITIALIZED(kbd) && !(flags & KB_CONF_PROBE_ONLY)) { 425 kbd->kb_config = flags & ~KB_CONF_PROBE_ONLY; 426 if (KBD_HAS_DEVICE(kbd) 427 && init_keyboard(state->kbdc, &kbd->kb_type, kbd->kb_config) 428 && (kbd->kb_config & KB_CONF_FAIL_IF_NO_KBD)) { 429 kbd_unregister(kbd); 430 error = ENXIO; 431 goto bad; 432 } 433 atkbd_ioctl(kbd, KDSETLED, (caddr_t)&state->ks_state); 434 get_typematic(kbd); 435 delay[0] = kbd->kb_delay1; 436 delay[1] = kbd->kb_delay2; 437 atkbd_ioctl(kbd, KDSETREPEAT, (caddr_t)delay); 438 KBD_INIT_DONE(kbd); 439 } 440 if (!KBD_IS_CONFIGURED(kbd)) { 441 if (kbd_register(kbd) < 0) { 442 error = ENXIO; 443 goto bad; 444 } 445 KBD_CONFIG_DONE(kbd); 446 } 447 448 return 0; 449 bad: 450 if (needfree) { 451 if (state != NULL) 452 free(state, M_DEVBUF); 453 if (keymap != NULL) 454 free(keymap, M_DEVBUF); 455 if (accmap != NULL) 456 free(accmap, M_DEVBUF); 457 if (fkeymap != NULL) 458 free(fkeymap, M_DEVBUF); 459 if (kbd != NULL) { 460 free(kbd, M_DEVBUF); 461 *kbdp = NULL; /* insure ref doesn't leak to caller */ 462 } 463 } 464 return error; 465 } 466 467 /* finish using this keyboard */ 468 static int 469 atkbd_term(keyboard_t *kbd) 470 { 471 kbd_unregister(kbd); 472 return 0; 473 } 474 475 /* keyboard interrupt routine */ 476 static int 477 atkbd_intr(keyboard_t *kbd, void *arg) 478 { 479 atkbd_state_t *state = (atkbd_state_t *)kbd->kb_data; 480 int delay[2]; 481 int c; 482 483 if (!KBD_HAS_DEVICE(kbd)) { 484 /* 485 * The keyboard was not detected before; 486 * it must have been reconnected! 487 */ 488 init_keyboard(state->kbdc, &kbd->kb_type, 489 kbd->kb_config); 490 KBD_FOUND_DEVICE(kbd); 491 atkbd_ioctl(kbd, KDSETLED, (caddr_t)&state->ks_state); 492 get_typematic(kbd); 493 delay[0] = kbd->kb_delay1; 494 delay[1] = kbd->kb_delay2; 495 atkbd_ioctl(kbd, KDSETREPEAT, (caddr_t)delay); 496 } 497 498 if (state->ks_polling) 499 return 0; 500 501 if (KBD_IS_ACTIVE(kbd) && KBD_IS_BUSY(kbd)) { 502 /* let the callback function to process the input */ 503 (*kbd->kb_callback.kc_func)(kbd, KBDIO_KEYINPUT, 504 kbd->kb_callback.kc_arg); 505 } else { 506 /* read and discard the input; no one is waiting for input */ 507 do { 508 c = atkbd_read_char(kbd, FALSE); 509 } while (c != NOKEY); 510 } 511 return 0; 512 } 513 514 /* test the interface to the device */ 515 static int 516 atkbd_test_if(keyboard_t *kbd) 517 { 518 int error; 519 int s; 520 521 error = 0; 522 empty_both_buffers(((atkbd_state_t *)kbd->kb_data)->kbdc, 10); 523 s = spltty(); 524 if (!test_controller(((atkbd_state_t *)kbd->kb_data)->kbdc)) 525 error = EIO; 526 else if (test_kbd_port(((atkbd_state_t *)kbd->kb_data)->kbdc) != 0) 527 error = EIO; 528 splx(s); 529 530 return error; 531 } 532 533 /* 534 * Enable the access to the device; until this function is called, 535 * the client cannot read from the keyboard. 536 */ 537 static int 538 atkbd_enable(keyboard_t *kbd) 539 { 540 int s; 541 542 s = spltty(); 543 KBD_ACTIVATE(kbd); 544 splx(s); 545 return 0; 546 } 547 548 /* disallow the access to the device */ 549 static int 550 atkbd_disable(keyboard_t *kbd) 551 { 552 int s; 553 554 s = spltty(); 555 KBD_DEACTIVATE(kbd); 556 splx(s); 557 return 0; 558 } 559 560 /* read one byte from the keyboard if it's allowed */ 561 static int 562 atkbd_read(keyboard_t *kbd, int wait) 563 { 564 int c; 565 566 if (wait) 567 c = read_kbd_data(((atkbd_state_t *)kbd->kb_data)->kbdc); 568 else 569 c = read_kbd_data_no_wait(((atkbd_state_t *)kbd->kb_data)->kbdc); 570 if (c != -1) 571 ++kbd->kb_count; 572 return (KBD_IS_ACTIVE(kbd) ? c : -1); 573 } 574 575 /* check if data is waiting */ 576 static int 577 atkbd_check(keyboard_t *kbd) 578 { 579 if (!KBD_IS_ACTIVE(kbd)) 580 return FALSE; 581 return kbdc_data_ready(((atkbd_state_t *)kbd->kb_data)->kbdc); 582 } 583 584 /* read char from the keyboard */ 585 static u_int 586 atkbd_read_char(keyboard_t *kbd, int wait) 587 { 588 atkbd_state_t *state; 589 u_int action; 590 int scancode; 591 int keycode; 592 593 state = (atkbd_state_t *)kbd->kb_data; 594 next_code: 595 /* do we have a composed char to return? */ 596 if (!(state->ks_flags & COMPOSE) && (state->ks_composed_char > 0)) { 597 action = state->ks_composed_char; 598 state->ks_composed_char = 0; 599 if (action > UCHAR_MAX) 600 return ERRKEY; 601 return action; 602 } 603 604 /* see if there is something in the keyboard port */ 605 if (wait) { 606 do { 607 scancode = read_kbd_data(state->kbdc); 608 } while (scancode == -1); 609 } else { 610 scancode = read_kbd_data_no_wait(state->kbdc); 611 if (scancode == -1) 612 return NOKEY; 613 } 614 ++kbd->kb_count; 615 616 #if KBDIO_DEBUG >= 10 617 printf("atkbd_read_char(): scancode:0x%x\n", scancode); 618 #endif 619 620 /* return the byte as is for the K_RAW mode */ 621 if (state->ks_mode == K_RAW) 622 return scancode; 623 624 /* translate the scan code into a keycode */ 625 keycode = scancode & 0x7F; 626 switch (state->ks_prefix) { 627 case 0x00: /* normal scancode */ 628 switch(scancode) { 629 case 0xB8: /* left alt (compose key) released */ 630 if (state->ks_flags & COMPOSE) { 631 state->ks_flags &= ~COMPOSE; 632 if (state->ks_composed_char > UCHAR_MAX) 633 state->ks_composed_char = 0; 634 } 635 break; 636 case 0x38: /* left alt (compose key) pressed */ 637 if (!(state->ks_flags & COMPOSE)) { 638 state->ks_flags |= COMPOSE; 639 state->ks_composed_char = 0; 640 } 641 break; 642 case 0xE0: 643 case 0xE1: 644 state->ks_prefix = scancode; 645 goto next_code; 646 } 647 break; 648 case 0xE0: /* 0xE0 prefix */ 649 state->ks_prefix = 0; 650 switch (keycode) { 651 case 0x1C: /* right enter key */ 652 keycode = 0x59; 653 break; 654 case 0x1D: /* right ctrl key */ 655 keycode = 0x5A; 656 break; 657 case 0x35: /* keypad divide key */ 658 keycode = 0x5B; 659 break; 660 case 0x37: /* print scrn key */ 661 keycode = 0x5C; 662 break; 663 case 0x38: /* right alt key (alt gr) */ 664 keycode = 0x5D; 665 break; 666 case 0x46: /* ctrl-pause/break on AT 101 (see below) */ 667 keycode = 0x68; 668 break; 669 case 0x47: /* grey home key */ 670 keycode = 0x5E; 671 break; 672 case 0x48: /* grey up arrow key */ 673 keycode = 0x5F; 674 break; 675 case 0x49: /* grey page up key */ 676 keycode = 0x60; 677 break; 678 case 0x4B: /* grey left arrow key */ 679 keycode = 0x61; 680 break; 681 case 0x4D: /* grey right arrow key */ 682 keycode = 0x62; 683 break; 684 case 0x4F: /* grey end key */ 685 keycode = 0x63; 686 break; 687 case 0x50: /* grey down arrow key */ 688 keycode = 0x64; 689 break; 690 case 0x51: /* grey page down key */ 691 keycode = 0x65; 692 break; 693 case 0x52: /* grey insert key */ 694 keycode = 0x66; 695 break; 696 case 0x53: /* grey delete key */ 697 keycode = 0x67; 698 break; 699 /* the following 3 are only used on the MS "Natural" keyboard */ 700 case 0x5b: /* left Window key */ 701 keycode = 0x69; 702 break; 703 case 0x5c: /* right Window key */ 704 keycode = 0x6a; 705 break; 706 case 0x5d: /* menu key */ 707 keycode = 0x6b; 708 break; 709 case 0x5e: /* power key */ 710 keycode = 0x6d; 711 break; 712 case 0x5f: /* sleep key */ 713 keycode = 0x6e; 714 break; 715 case 0x63: /* wake key */ 716 keycode = 0x6f; 717 break; 718 default: /* ignore everything else */ 719 goto next_code; 720 } 721 break; 722 case 0xE1: /* 0xE1 prefix */ 723 /* 724 * The pause/break key on the 101 keyboard produces: 725 * E1-1D-45 E1-9D-C5 726 * Ctrl-pause/break produces: 727 * E0-46 E0-C6 (See above.) 728 */ 729 state->ks_prefix = 0; 730 if (keycode == 0x1D) 731 state->ks_prefix = 0x1D; 732 goto next_code; 733 /* NOT REACHED */ 734 case 0x1D: /* pause / break */ 735 state->ks_prefix = 0; 736 if (keycode != 0x45) 737 goto next_code; 738 keycode = 0x68; 739 break; 740 } 741 742 if (kbd->kb_type == KB_84) { 743 switch (keycode) { 744 case 0x37: /* *(numpad)/print screen */ 745 if (state->ks_flags & SHIFTS) 746 keycode = 0x5c; /* print screen */ 747 break; 748 case 0x45: /* num lock/pause */ 749 if (state->ks_flags & CTLS) 750 keycode = 0x68; /* pause */ 751 break; 752 case 0x46: /* scroll lock/break */ 753 if (state->ks_flags & CTLS) 754 keycode = 0x6c; /* break */ 755 break; 756 } 757 } else if (kbd->kb_type == KB_101) { 758 switch (keycode) { 759 case 0x5c: /* print screen */ 760 if (state->ks_flags & ALTS) 761 keycode = 0x54; /* sysrq */ 762 break; 763 case 0x68: /* pause/break */ 764 if (state->ks_flags & CTLS) 765 keycode = 0x6c; /* break */ 766 break; 767 } 768 } 769 770 /* return the key code in the K_CODE mode */ 771 if (state->ks_mode == K_CODE) 772 return (keycode | (scancode & 0x80)); 773 774 /* compose a character code */ 775 if (state->ks_flags & COMPOSE) { 776 switch (keycode | (scancode & 0x80)) { 777 /* key pressed, process it */ 778 case 0x47: case 0x48: case 0x49: /* keypad 7,8,9 */ 779 state->ks_composed_char *= 10; 780 state->ks_composed_char += keycode - 0x40; 781 if (state->ks_composed_char > UCHAR_MAX) 782 return ERRKEY; 783 goto next_code; 784 case 0x4B: case 0x4C: case 0x4D: /* keypad 4,5,6 */ 785 state->ks_composed_char *= 10; 786 state->ks_composed_char += keycode - 0x47; 787 if (state->ks_composed_char > UCHAR_MAX) 788 return ERRKEY; 789 goto next_code; 790 case 0x4F: case 0x50: case 0x51: /* keypad 1,2,3 */ 791 state->ks_composed_char *= 10; 792 state->ks_composed_char += keycode - 0x4E; 793 if (state->ks_composed_char > UCHAR_MAX) 794 return ERRKEY; 795 goto next_code; 796 case 0x52: /* keypad 0 */ 797 state->ks_composed_char *= 10; 798 if (state->ks_composed_char > UCHAR_MAX) 799 return ERRKEY; 800 goto next_code; 801 802 /* key released, no interest here */ 803 case 0xC7: case 0xC8: case 0xC9: /* keypad 7,8,9 */ 804 case 0xCB: case 0xCC: case 0xCD: /* keypad 4,5,6 */ 805 case 0xCF: case 0xD0: case 0xD1: /* keypad 1,2,3 */ 806 case 0xD2: /* keypad 0 */ 807 goto next_code; 808 809 case 0x38: /* left alt key */ 810 break; 811 812 default: 813 if (state->ks_composed_char > 0) { 814 state->ks_flags &= ~COMPOSE; 815 state->ks_composed_char = 0; 816 return ERRKEY; 817 } 818 break; 819 } 820 } 821 822 /* keycode to key action */ 823 action = genkbd_keyaction(kbd, keycode, scancode & 0x80, 824 &state->ks_state, &state->ks_accents); 825 if (action == NOKEY) 826 goto next_code; 827 else 828 return action; 829 } 830 831 /* check if char is waiting */ 832 static int 833 atkbd_check_char(keyboard_t *kbd) 834 { 835 atkbd_state_t *state; 836 837 if (!KBD_IS_ACTIVE(kbd)) 838 return FALSE; 839 state = (atkbd_state_t *)kbd->kb_data; 840 if (!(state->ks_flags & COMPOSE) && (state->ks_composed_char > 0)) 841 return TRUE; 842 return kbdc_data_ready(state->kbdc); 843 } 844 845 /* some useful control functions */ 846 static int 847 atkbd_ioctl(keyboard_t *kbd, u_long cmd, caddr_t arg) 848 { 849 /* translate LED_XXX bits into the device specific bits */ 850 static u_char ledmap[8] = { 851 0, 4, 2, 6, 1, 5, 3, 7, 852 }; 853 atkbd_state_t *state = kbd->kb_data; 854 int error; 855 int s; 856 int i; 857 #if defined(COMPAT_FREEBSD6) || defined(COMPAT_FREEBSD5) || \ 858 defined(COMPAT_FREEBSD4) || defined(COMPAT_43) 859 int ival; 860 #endif 861 862 s = spltty(); 863 switch (cmd) { 864 865 case KDGKBMODE: /* get keyboard mode */ 866 *(int *)arg = state->ks_mode; 867 break; 868 #if defined(COMPAT_FREEBSD6) || defined(COMPAT_FREEBSD5) || \ 869 defined(COMPAT_FREEBSD4) || defined(COMPAT_43) 870 case _IO('K', 7): 871 ival = IOCPARM_IVAL(arg); 872 arg = (caddr_t)&ival; 873 /* FALLTHROUGH */ 874 #endif 875 case KDSKBMODE: /* set keyboard mode */ 876 switch (*(int *)arg) { 877 case K_XLATE: 878 if (state->ks_mode != K_XLATE) { 879 /* make lock key state and LED state match */ 880 state->ks_state &= ~LOCK_MASK; 881 state->ks_state |= KBD_LED_VAL(kbd); 882 } 883 /* FALLTHROUGH */ 884 case K_RAW: 885 case K_CODE: 886 if (state->ks_mode != *(int *)arg) { 887 atkbd_clear_state(kbd); 888 state->ks_mode = *(int *)arg; 889 } 890 break; 891 default: 892 splx(s); 893 return EINVAL; 894 } 895 break; 896 897 case KDGETLED: /* get keyboard LED */ 898 *(int *)arg = KBD_LED_VAL(kbd); 899 break; 900 #if defined(COMPAT_FREEBSD6) || defined(COMPAT_FREEBSD5) || \ 901 defined(COMPAT_FREEBSD4) || defined(COMPAT_43) 902 case _IO('K', 66): 903 ival = IOCPARM_IVAL(arg); 904 arg = (caddr_t)&ival; 905 /* FALLTHROUGH */ 906 #endif 907 case KDSETLED: /* set keyboard LED */ 908 /* NOTE: lock key state in ks_state won't be changed */ 909 if (*(int *)arg & ~LOCK_MASK) { 910 splx(s); 911 return EINVAL; 912 } 913 i = *(int *)arg; 914 /* replace CAPS LED with ALTGR LED for ALTGR keyboards */ 915 if (state->ks_mode == K_XLATE && 916 kbd->kb_keymap->n_keys > ALTGR_OFFSET) { 917 if (i & ALKED) 918 i |= CLKED; 919 else 920 i &= ~CLKED; 921 } 922 if (KBD_HAS_DEVICE(kbd)) { 923 error = write_kbd(state->kbdc, KBDC_SET_LEDS, 924 ledmap[i & LED_MASK]); 925 if (error) { 926 splx(s); 927 return error; 928 } 929 } 930 KBD_LED_VAL(kbd) = *(int *)arg; 931 break; 932 933 case KDGKBSTATE: /* get lock key state */ 934 *(int *)arg = state->ks_state & LOCK_MASK; 935 break; 936 #if defined(COMPAT_FREEBSD6) || defined(COMPAT_FREEBSD5) || \ 937 defined(COMPAT_FREEBSD4) || defined(COMPAT_43) 938 case _IO('K', 20): 939 ival = IOCPARM_IVAL(arg); 940 arg = (caddr_t)&ival; 941 /* FALLTHROUGH */ 942 #endif 943 case KDSKBSTATE: /* set lock key state */ 944 if (*(int *)arg & ~LOCK_MASK) { 945 splx(s); 946 return EINVAL; 947 } 948 state->ks_state &= ~LOCK_MASK; 949 state->ks_state |= *(int *)arg; 950 splx(s); 951 /* set LEDs and quit */ 952 return atkbd_ioctl(kbd, KDSETLED, arg); 953 954 case KDSETREPEAT: /* set keyboard repeat rate (new interface) */ 955 splx(s); 956 if (!KBD_HAS_DEVICE(kbd)) 957 return 0; 958 i = typematic(((int *)arg)[0], ((int *)arg)[1]); 959 error = write_kbd(state->kbdc, KBDC_SET_TYPEMATIC, i); 960 if (error == 0) { 961 kbd->kb_delay1 = typematic_delay(i); 962 kbd->kb_delay2 = typematic_rate(i); 963 } 964 return error; 965 966 #if defined(COMPAT_FREEBSD6) || defined(COMPAT_FREEBSD5) || \ 967 defined(COMPAT_FREEBSD4) || defined(COMPAT_43) 968 case _IO('K', 67): 969 ival = IOCPARM_IVAL(arg); 970 arg = (caddr_t)&ival; 971 /* FALLTHROUGH */ 972 #endif 973 case KDSETRAD: /* set keyboard repeat rate (old interface) */ 974 splx(s); 975 if (!KBD_HAS_DEVICE(kbd)) 976 return 0; 977 error = write_kbd(state->kbdc, KBDC_SET_TYPEMATIC, *(int *)arg); 978 if (error == 0) { 979 kbd->kb_delay1 = typematic_delay(*(int *)arg); 980 kbd->kb_delay2 = typematic_rate(*(int *)arg); 981 } 982 return error; 983 984 case PIO_KEYMAP: /* set keyboard translation table */ 985 case OPIO_KEYMAP: /* set keyboard translation table (compat) */ 986 case PIO_KEYMAPENT: /* set keyboard translation table entry */ 987 case PIO_DEADKEYMAP: /* set accent key translation table */ 988 state->ks_accents = 0; 989 /* FALLTHROUGH */ 990 default: 991 splx(s); 992 return genkbd_commonioctl(kbd, cmd, arg); 993 } 994 995 splx(s); 996 return 0; 997 } 998 999 /* lock the access to the keyboard */ 1000 static int 1001 atkbd_lock(keyboard_t *kbd, int lock) 1002 { 1003 return kbdc_lock(((atkbd_state_t *)kbd->kb_data)->kbdc, lock); 1004 } 1005 1006 /* clear the internal state of the keyboard */ 1007 static void 1008 atkbd_clear_state(keyboard_t *kbd) 1009 { 1010 atkbd_state_t *state; 1011 1012 state = (atkbd_state_t *)kbd->kb_data; 1013 state->ks_flags = 0; 1014 state->ks_polling = 0; 1015 state->ks_state &= LOCK_MASK; /* preserve locking key state */ 1016 state->ks_accents = 0; 1017 state->ks_composed_char = 0; 1018 #if 0 1019 state->ks_prefix = 0; /* XXX */ 1020 #endif 1021 } 1022 1023 /* save the internal state */ 1024 static int 1025 atkbd_get_state(keyboard_t *kbd, void *buf, size_t len) 1026 { 1027 if (len == 0) 1028 return sizeof(atkbd_state_t); 1029 if (len < sizeof(atkbd_state_t)) 1030 return -1; 1031 bcopy(kbd->kb_data, buf, sizeof(atkbd_state_t)); 1032 return 0; 1033 } 1034 1035 /* set the internal state */ 1036 static int 1037 atkbd_set_state(keyboard_t *kbd, void *buf, size_t len) 1038 { 1039 if (len < sizeof(atkbd_state_t)) 1040 return ENOMEM; 1041 if (((atkbd_state_t *)kbd->kb_data)->kbdc 1042 != ((atkbd_state_t *)buf)->kbdc) 1043 return ENOMEM; 1044 bcopy(buf, kbd->kb_data, sizeof(atkbd_state_t)); 1045 return 0; 1046 } 1047 1048 static int 1049 atkbd_poll(keyboard_t *kbd, int on) 1050 { 1051 atkbd_state_t *state; 1052 int s; 1053 1054 state = (atkbd_state_t *)kbd->kb_data; 1055 s = spltty(); 1056 if (on) 1057 ++state->ks_polling; 1058 else 1059 --state->ks_polling; 1060 splx(s); 1061 return 0; 1062 } 1063 1064 static void 1065 atkbd_shutdown_final(void *v) 1066 { 1067 #ifdef __sparc64__ 1068 keyboard_t *kbd = v; 1069 KBDC kbdc = ((atkbd_state_t *)kbd->kb_data)->kbdc; 1070 1071 /* 1072 * Turn off the translation in preparation for handing the keyboard 1073 * over to the OFW as the OBP driver doesn't use translation and 1074 * also doesn't disable it itself resulting in a broken keymap at 1075 * the boot prompt. Also disable the aux port and the interrupts as 1076 * the OBP driver doesn't use them, i.e. polls the keyboard. Not 1077 * disabling the interrupts doesn't cause real problems but the 1078 * responsiveness is a bit better when they are turned off. 1079 */ 1080 send_kbd_command(kbdc, KBDC_DISABLE_KBD); 1081 set_controller_command_byte(kbdc, 1082 KBD_AUX_CONTROL_BITS | KBD_KBD_CONTROL_BITS | KBD_TRANSLATION, 1083 KBD_DISABLE_AUX_PORT | KBD_DISABLE_KBD_INT | KBD_ENABLE_KBD_PORT); 1084 send_kbd_command(kbdc, KBDC_ENABLE_KBD); 1085 #endif 1086 } 1087 1088 /* local functions */ 1089 1090 static int 1091 get_typematic(keyboard_t *kbd) 1092 { 1093 #if defined(__i386__) || defined(__amd64__) 1094 /* 1095 * Only some systems allow us to retrieve the keyboard repeat 1096 * rate previously set via the BIOS... 1097 */ 1098 x86regs_t regs; 1099 uint8_t *p; 1100 1101 /* 1102 * Traditional entry points of int 0x15 and 0x16 are fixed 1103 * and later BIOSes follow them. (U)EFI CSM specification 1104 * also mandates these fixed entry points. 1105 * 1106 * Validate the entry points here before we proceed further. 1107 * It's known that some recent laptops does not have the 1108 * same entry point and hang on boot if we call it. 1109 */ 1110 if (x86bios_get_intr(0x15) != 0xf000f859 || 1111 x86bios_get_intr(0x16) != 0xf000e82e) 1112 return (ENODEV); 1113 1114 /* Is BIOS system configuration table supported? */ 1115 x86bios_init_regs(®s); 1116 regs.R_AH = 0xc0; 1117 x86bios_intr(®s, 0x15); 1118 if ((regs.R_FLG & PSL_C) != 0 || regs.R_AH != 0) 1119 return (ENODEV); 1120 1121 /* Is int 0x16, function 0x09 supported? */ 1122 p = x86bios_offset((regs.R_ES << 4) + regs.R_BX); 1123 if (readw(p) < 5 || (readb(p + 6) & 0x40) == 0) 1124 return (ENODEV); 1125 1126 /* Is int 0x16, function 0x0306 supported? */ 1127 x86bios_init_regs(®s); 1128 regs.R_AH = 0x09; 1129 x86bios_intr(®s, 0x16); 1130 if ((regs.R_AL & 0x08) == 0) 1131 return (ENODEV); 1132 1133 x86bios_init_regs(®s); 1134 regs.R_AX = 0x0306; 1135 x86bios_intr(®s, 0x16); 1136 kbd->kb_delay1 = typematic_delay(regs.R_BH << 5); 1137 kbd->kb_delay2 = typematic_rate(regs.R_BL); 1138 return (0); 1139 #else 1140 return (ENODEV); 1141 #endif /* __i386__ || __amd64__ */ 1142 } 1143 1144 static int 1145 setup_kbd_port(KBDC kbdc, int port, int intr) 1146 { 1147 if (!set_controller_command_byte(kbdc, 1148 KBD_KBD_CONTROL_BITS, 1149 ((port) ? KBD_ENABLE_KBD_PORT : KBD_DISABLE_KBD_PORT) 1150 | ((intr) ? KBD_ENABLE_KBD_INT : KBD_DISABLE_KBD_INT))) 1151 return 1; 1152 return 0; 1153 } 1154 1155 static int 1156 get_kbd_echo(KBDC kbdc) 1157 { 1158 /* enable the keyboard port, but disable the keyboard intr. */ 1159 if (setup_kbd_port(kbdc, TRUE, FALSE)) 1160 /* CONTROLLER ERROR: there is very little we can do... */ 1161 return ENXIO; 1162 1163 /* see if something is present */ 1164 write_kbd_command(kbdc, KBDC_ECHO); 1165 if (read_kbd_data(kbdc) != KBD_ECHO) { 1166 empty_both_buffers(kbdc, 10); 1167 test_controller(kbdc); 1168 test_kbd_port(kbdc); 1169 return ENXIO; 1170 } 1171 1172 /* enable the keyboard port and intr. */ 1173 if (setup_kbd_port(kbdc, TRUE, TRUE)) { 1174 /* 1175 * CONTROLLER ERROR 1176 * This is serious; the keyboard intr is left disabled! 1177 */ 1178 return ENXIO; 1179 } 1180 1181 return 0; 1182 } 1183 1184 static int 1185 probe_keyboard(KBDC kbdc, int flags) 1186 { 1187 /* 1188 * Don't try to print anything in this function. The low-level 1189 * console may not have been initialized yet... 1190 */ 1191 int err; 1192 int c; 1193 int m; 1194 1195 if (!kbdc_lock(kbdc, TRUE)) { 1196 /* driver error? */ 1197 return ENXIO; 1198 } 1199 1200 /* temporarily block data transmission from the keyboard */ 1201 write_controller_command(kbdc, KBDC_DISABLE_KBD_PORT); 1202 1203 /* flush any noise in the buffer */ 1204 empty_both_buffers(kbdc, 100); 1205 1206 /* save the current keyboard controller command byte */ 1207 m = kbdc_get_device_mask(kbdc) & ~KBD_KBD_CONTROL_BITS; 1208 c = get_controller_command_byte(kbdc); 1209 if (c == -1) { 1210 /* CONTROLLER ERROR */ 1211 kbdc_set_device_mask(kbdc, m); 1212 kbdc_lock(kbdc, FALSE); 1213 return ENXIO; 1214 } 1215 1216 /* 1217 * The keyboard may have been screwed up by the boot block. 1218 * We may just be able to recover from error by testing the controller 1219 * and the keyboard port. The controller command byte needs to be 1220 * saved before this recovery operation, as some controllers seem 1221 * to set the command byte to particular values. 1222 */ 1223 test_controller(kbdc); 1224 if (!(flags & KB_CONF_NO_PROBE_TEST)) 1225 test_kbd_port(kbdc); 1226 1227 err = get_kbd_echo(kbdc); 1228 1229 /* 1230 * Even if the keyboard doesn't seem to be present (err != 0), 1231 * we shall enable the keyboard port and interrupt so that 1232 * the driver will be operable when the keyboard is attached 1233 * to the system later. It is NOT recommended to hot-plug 1234 * the AT keyboard, but many people do so... 1235 */ 1236 kbdc_set_device_mask(kbdc, m | KBD_KBD_CONTROL_BITS); 1237 setup_kbd_port(kbdc, TRUE, TRUE); 1238 #if 0 1239 if (err == 0) { 1240 kbdc_set_device_mask(kbdc, m | KBD_KBD_CONTROL_BITS); 1241 } else { 1242 /* try to restore the command byte as before */ 1243 set_controller_command_byte(kbdc, 0xff, c); 1244 kbdc_set_device_mask(kbdc, m); 1245 } 1246 #endif 1247 1248 kbdc_lock(kbdc, FALSE); 1249 return err; 1250 } 1251 1252 static int 1253 init_keyboard(KBDC kbdc, int *type, int flags) 1254 { 1255 int codeset; 1256 int id; 1257 int c; 1258 1259 if (!kbdc_lock(kbdc, TRUE)) { 1260 /* driver error? */ 1261 return EIO; 1262 } 1263 1264 /* temporarily block data transmission from the keyboard */ 1265 write_controller_command(kbdc, KBDC_DISABLE_KBD_PORT); 1266 1267 /* save the current controller command byte */ 1268 empty_both_buffers(kbdc, 200); 1269 c = get_controller_command_byte(kbdc); 1270 if (c == -1) { 1271 /* CONTROLLER ERROR */ 1272 kbdc_lock(kbdc, FALSE); 1273 printf("atkbd: unable to get the current command byte value.\n"); 1274 return EIO; 1275 } 1276 if (bootverbose) 1277 printf("atkbd: the current kbd controller command byte %04x\n", 1278 c); 1279 #if 0 1280 /* override the keyboard lock switch */ 1281 c |= KBD_OVERRIDE_KBD_LOCK; 1282 #endif 1283 1284 /* enable the keyboard port, but disable the keyboard intr. */ 1285 if (setup_kbd_port(kbdc, TRUE, FALSE)) { 1286 /* CONTROLLER ERROR: there is very little we can do... */ 1287 printf("atkbd: unable to set the command byte.\n"); 1288 kbdc_lock(kbdc, FALSE); 1289 return EIO; 1290 } 1291 1292 /* 1293 * Check if we have an XT keyboard before we attempt to reset it. 1294 * The procedure assumes that the keyboard and the controller have 1295 * been set up properly by BIOS and have not been messed up 1296 * during the boot process. 1297 */ 1298 codeset = -1; 1299 if (flags & KB_CONF_ALT_SCANCODESET) 1300 /* the user says there is a XT keyboard */ 1301 codeset = 1; 1302 #ifdef KBD_DETECT_XT_KEYBOARD 1303 else if ((c & KBD_TRANSLATION) == 0) { 1304 /* SET_SCANCODE_SET is not always supported; ignore error */ 1305 if (send_kbd_command_and_data(kbdc, KBDC_SET_SCANCODE_SET, 0) 1306 == KBD_ACK) 1307 codeset = read_kbd_data(kbdc); 1308 } 1309 if (bootverbose) 1310 printf("atkbd: scancode set %d\n", codeset); 1311 #endif /* KBD_DETECT_XT_KEYBOARD */ 1312 1313 *type = KB_OTHER; 1314 id = get_kbd_id(kbdc); 1315 switch(id) { 1316 case 0x41ab: /* 101/102/... Enhanced */ 1317 case 0x83ab: /* ditto */ 1318 case 0x54ab: /* SpaceSaver */ 1319 case 0x84ab: /* ditto */ 1320 #if 0 1321 case 0x90ab: /* 'G' */ 1322 case 0x91ab: /* 'P' */ 1323 case 0x92ab: /* 'A' */ 1324 #endif 1325 *type = KB_101; 1326 break; 1327 case -1: /* AT 84 keyboard doesn't return ID */ 1328 *type = KB_84; 1329 break; 1330 default: 1331 break; 1332 } 1333 if (bootverbose) 1334 printf("atkbd: keyboard ID 0x%x (%d)\n", id, *type); 1335 1336 /* reset keyboard hardware */ 1337 if (!(flags & KB_CONF_NO_RESET) && !reset_kbd(kbdc)) { 1338 /* 1339 * KEYBOARD ERROR 1340 * Keyboard reset may fail either because the keyboard 1341 * doen't exist, or because the keyboard doesn't pass 1342 * the self-test, or the keyboard controller on the 1343 * motherboard and the keyboard somehow fail to shake hands. 1344 * It is just possible, particularly in the last case, 1345 * that the keyboard controller may be left in a hung state. 1346 * test_controller() and test_kbd_port() appear to bring 1347 * the keyboard controller back (I don't know why and how, 1348 * though.) 1349 */ 1350 empty_both_buffers(kbdc, 10); 1351 test_controller(kbdc); 1352 test_kbd_port(kbdc); 1353 /* 1354 * We could disable the keyboard port and interrupt... but, 1355 * the keyboard may still exist (see above). 1356 */ 1357 set_controller_command_byte(kbdc, 0xff, c); 1358 kbdc_lock(kbdc, FALSE); 1359 if (bootverbose) 1360 printf("atkbd: failed to reset the keyboard.\n"); 1361 return EIO; 1362 } 1363 1364 /* 1365 * Allow us to set the XT_KEYBD flag so that keyboards 1366 * such as those on the IBM ThinkPad laptop computers can be used 1367 * with the standard console driver. 1368 */ 1369 if (codeset == 1) { 1370 if (send_kbd_command_and_data(kbdc, 1371 KBDC_SET_SCANCODE_SET, codeset) == KBD_ACK) { 1372 /* XT kbd doesn't need scan code translation */ 1373 c &= ~KBD_TRANSLATION; 1374 } else { 1375 /* 1376 * KEYBOARD ERROR 1377 * The XT kbd isn't usable unless the proper scan 1378 * code set is selected. 1379 */ 1380 set_controller_command_byte(kbdc, 0xff, c); 1381 kbdc_lock(kbdc, FALSE); 1382 printf("atkbd: unable to set the XT keyboard mode.\n"); 1383 return EIO; 1384 } 1385 } 1386 1387 #if defined(__sparc64__) 1388 if (send_kbd_command_and_data( 1389 kbdc, KBDC_SET_SCANCODE_SET, 2) != KBD_ACK) { 1390 printf("atkbd: can't set translation.\n"); 1391 } 1392 c |= KBD_TRANSLATION; 1393 #endif 1394 1395 /* enable the keyboard port and intr. */ 1396 if (!set_controller_command_byte(kbdc, 1397 KBD_KBD_CONTROL_BITS | KBD_TRANSLATION | KBD_OVERRIDE_KBD_LOCK, 1398 (c & (KBD_TRANSLATION | KBD_OVERRIDE_KBD_LOCK)) 1399 | KBD_ENABLE_KBD_PORT | KBD_ENABLE_KBD_INT)) { 1400 /* 1401 * CONTROLLER ERROR 1402 * This is serious; we are left with the disabled 1403 * keyboard intr. 1404 */ 1405 set_controller_command_byte(kbdc, 0xff, c); 1406 kbdc_lock(kbdc, FALSE); 1407 printf("atkbd: unable to enable the keyboard port and intr.\n"); 1408 return EIO; 1409 } 1410 1411 kbdc_lock(kbdc, FALSE); 1412 return 0; 1413 } 1414 1415 static int 1416 write_kbd(KBDC kbdc, int command, int data) 1417 { 1418 int s; 1419 1420 /* prevent the timeout routine from polling the keyboard */ 1421 if (!kbdc_lock(kbdc, TRUE)) 1422 return EBUSY; 1423 1424 /* disable the keyboard and mouse interrupt */ 1425 s = spltty(); 1426 #if 0 1427 c = get_controller_command_byte(kbdc); 1428 if ((c == -1) 1429 || !set_controller_command_byte(kbdc, 1430 kbdc_get_device_mask(kbdc), 1431 KBD_DISABLE_KBD_PORT | KBD_DISABLE_KBD_INT 1432 | KBD_DISABLE_AUX_PORT | KBD_DISABLE_AUX_INT)) { 1433 /* CONTROLLER ERROR */ 1434 kbdc_lock(kbdc, FALSE); 1435 splx(s); 1436 return EIO; 1437 } 1438 /* 1439 * Now that the keyboard controller is told not to generate 1440 * the keyboard and mouse interrupts, call `splx()' to allow 1441 * the other tty interrupts. The clock interrupt may also occur, 1442 * but the timeout routine (`scrn_timer()') will be blocked 1443 * by the lock flag set via `kbdc_lock()' 1444 */ 1445 splx(s); 1446 #endif 1447 1448 if (send_kbd_command_and_data(kbdc, command, data) != KBD_ACK) 1449 send_kbd_command(kbdc, KBDC_ENABLE_KBD); 1450 1451 #if 0 1452 /* restore the interrupts */ 1453 if (!set_controller_command_byte(kbdc, 1454 kbdc_get_device_mask(kbdc), 1455 c & (KBD_KBD_CONTROL_BITS | KBD_AUX_CONTROL_BITS))) { 1456 /* CONTROLLER ERROR */ 1457 } 1458 #else 1459 splx(s); 1460 #endif 1461 kbdc_lock(kbdc, FALSE); 1462 1463 return 0; 1464 } 1465 1466 static int 1467 get_kbd_id(KBDC kbdc) 1468 { 1469 int id1, id2; 1470 1471 empty_both_buffers(kbdc, 10); 1472 id1 = id2 = -1; 1473 if (send_kbd_command(kbdc, KBDC_SEND_DEV_ID) != KBD_ACK) 1474 return -1; 1475 1476 DELAY(10000); /* 10 msec delay */ 1477 id1 = read_kbd_data(kbdc); 1478 if (id1 != -1) 1479 id2 = read_kbd_data(kbdc); 1480 1481 if ((id1 == -1) || (id2 == -1)) { 1482 empty_both_buffers(kbdc, 10); 1483 test_controller(kbdc); 1484 test_kbd_port(kbdc); 1485 return -1; 1486 } 1487 return ((id2 << 8) | id1); 1488 } 1489 1490 static int delays[] = { 250, 500, 750, 1000 }; 1491 static int rates[] = { 34, 38, 42, 46, 50, 55, 59, 63, 1492 68, 76, 84, 92, 100, 110, 118, 126, 1493 136, 152, 168, 184, 200, 220, 236, 252, 1494 272, 304, 336, 368, 400, 440, 472, 504 }; 1495 1496 static int 1497 typematic_delay(int i) 1498 { 1499 return delays[(i >> 5) & 3]; 1500 } 1501 1502 static int 1503 typematic_rate(int i) 1504 { 1505 return rates[i & 0x1f]; 1506 } 1507 1508 static int 1509 typematic(int delay, int rate) 1510 { 1511 int value; 1512 int i; 1513 1514 for (i = sizeof(delays)/sizeof(delays[0]) - 1; i > 0; --i) { 1515 if (delay >= delays[i]) 1516 break; 1517 } 1518 value = i << 5; 1519 for (i = sizeof(rates)/sizeof(rates[0]) - 1; i > 0; --i) { 1520 if (rate >= rates[i]) 1521 break; 1522 } 1523 value |= i; 1524 return value; 1525 }
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