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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/9.2/sys/dev/atkbdc/atkbd.c 246045 2013-01-28 23:16:47Z imp $"); 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(device_t dev, 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] = device_get_unit(device_get_parent(dev)); 80 args[1] = irq; 81 error = (*sw->probe)(device_get_unit(dev), args, flags); 82 if (error) 83 return error; 84 return 0; 85 } 86 87 int 88 atkbd_attach_unit(device_t dev, keyboard_t **kbd, int irq, int flags) 89 { 90 keyboard_switch_t *sw; 91 int args[2]; 92 int error; 93 int unit; 94 95 sw = kbd_get_switch(ATKBD_DRIVER_NAME); 96 if (sw == NULL) 97 return ENXIO; 98 99 /* reset, initialize and enable the device */ 100 unit = device_get_unit(dev); 101 args[0] = device_get_unit(device_get_parent(dev)); 102 args[1] = irq; 103 *kbd = NULL; 104 error = (*sw->probe)(unit, args, flags); 105 if (error) 106 return error; 107 error = (*sw->init)(unit, kbd, args, flags); 108 if (error) 109 return error; 110 (*sw->enable)(*kbd); 111 112 #ifdef KBD_INSTALL_CDEV 113 /* attach a virtual keyboard cdev */ 114 error = kbd_attach(*kbd); 115 if (error) 116 return error; 117 #endif 118 119 /* 120 * This is a kludge to compensate for lost keyboard interrupts. 121 * A similar code used to be in syscons. See below. XXX 122 */ 123 atkbd_timeout(*kbd); 124 125 if (bootverbose) 126 (*sw->diag)(*kbd, bootverbose); 127 128 EVENTHANDLER_REGISTER(shutdown_final, atkbd_shutdown_final, *kbd, 129 SHUTDOWN_PRI_DEFAULT); 130 131 return 0; 132 } 133 134 static void 135 atkbd_timeout(void *arg) 136 { 137 keyboard_t *kbd; 138 int s; 139 140 /* 141 * The original text of the following comments are extracted 142 * from syscons.c (1.287) 143 * 144 * With release 2.1 of the Xaccel server, the keyboard is left 145 * hanging pretty often. Apparently an interrupt from the 146 * keyboard is lost, and I don't know why (yet). 147 * This ugly hack calls the low-level interrupt routine if input 148 * is ready for the keyboard and conveniently hides the problem. XXX 149 * 150 * Try removing anything stuck in the keyboard controller; whether 151 * it's a keyboard scan code or mouse data. The low-level 152 * interrupt routine doesn't read the mouse data directly, 153 * but the keyboard controller driver will, as a side effect. 154 */ 155 /* 156 * And here is bde's original comment about this: 157 * 158 * This is necessary to handle edge triggered interrupts - if we 159 * returned when our IRQ is high due to unserviced input, then there 160 * would be no more keyboard IRQs until the keyboard is reset by 161 * external powers. 162 * 163 * The keyboard apparently unwedges the irq in most cases. 164 */ 165 s = spltty(); 166 kbd = (keyboard_t *)arg; 167 if (kbdd_lock(kbd, TRUE)) { 168 /* 169 * We have seen the lock flag is not set. Let's reset 170 * the flag early, otherwise the LED update routine fails 171 * which may want the lock during the interrupt routine. 172 */ 173 kbdd_lock(kbd, FALSE); 174 if (kbdd_check_char(kbd)) 175 kbdd_intr(kbd, NULL); 176 } 177 splx(s); 178 timeout(atkbd_timeout, arg, hz/10); 179 } 180 181 /* LOW-LEVEL */ 182 183 #define ATKBD_DEFAULT 0 184 185 typedef struct atkbd_state { 186 KBDC kbdc; /* keyboard controller */ 187 int ks_mode; /* input mode (K_XLATE,K_RAW,K_CODE) */ 188 int ks_flags; /* flags */ 189 #define COMPOSE (1 << 0) 190 int ks_polling; 191 int ks_state; /* shift/lock key state */ 192 int ks_accents; /* accent key index (> 0) */ 193 u_int ks_composed_char; /* composed char code (> 0) */ 194 u_char ks_prefix; /* AT scan code prefix */ 195 } atkbd_state_t; 196 197 /* keyboard driver declaration */ 198 static int atkbd_configure(int flags); 199 static kbd_probe_t atkbd_probe; 200 static kbd_init_t atkbd_init; 201 static kbd_term_t atkbd_term; 202 static kbd_intr_t atkbd_intr; 203 static kbd_test_if_t atkbd_test_if; 204 static kbd_enable_t atkbd_enable; 205 static kbd_disable_t atkbd_disable; 206 static kbd_read_t atkbd_read; 207 static kbd_check_t atkbd_check; 208 static kbd_read_char_t atkbd_read_char; 209 static kbd_check_char_t atkbd_check_char; 210 static kbd_ioctl_t atkbd_ioctl; 211 static kbd_lock_t atkbd_lock; 212 static kbd_clear_state_t atkbd_clear_state; 213 static kbd_get_state_t atkbd_get_state; 214 static kbd_set_state_t atkbd_set_state; 215 static kbd_poll_mode_t atkbd_poll; 216 217 static keyboard_switch_t atkbdsw = { 218 atkbd_probe, 219 atkbd_init, 220 atkbd_term, 221 atkbd_intr, 222 atkbd_test_if, 223 atkbd_enable, 224 atkbd_disable, 225 atkbd_read, 226 atkbd_check, 227 atkbd_read_char, 228 atkbd_check_char, 229 atkbd_ioctl, 230 atkbd_lock, 231 atkbd_clear_state, 232 atkbd_get_state, 233 atkbd_set_state, 234 genkbd_get_fkeystr, 235 atkbd_poll, 236 genkbd_diag, 237 }; 238 239 KEYBOARD_DRIVER(atkbd, atkbdsw, atkbd_configure); 240 241 /* local functions */ 242 static int get_typematic(keyboard_t *kbd); 243 static int setup_kbd_port(KBDC kbdc, int port, int intr); 244 static int get_kbd_echo(KBDC kbdc); 245 static int probe_keyboard(KBDC kbdc, int flags); 246 static int init_keyboard(KBDC kbdc, int *type, int flags); 247 static int write_kbd(KBDC kbdc, int command, int data); 248 static int get_kbd_id(KBDC kbdc); 249 static int typematic(int delay, int rate); 250 static int typematic_delay(int delay); 251 static int typematic_rate(int rate); 252 253 /* local variables */ 254 255 /* the initial key map, accent map and fkey strings */ 256 #ifdef ATKBD_DFLT_KEYMAP 257 #define KBD_DFLT_KEYMAP 258 #include "atkbdmap.h" 259 #endif 260 #include <dev/kbd/kbdtables.h> 261 262 /* structures for the default keyboard */ 263 static keyboard_t default_kbd; 264 static atkbd_state_t default_kbd_state; 265 static keymap_t default_keymap; 266 static accentmap_t default_accentmap; 267 static fkeytab_t default_fkeytab[NUM_FKEYS]; 268 269 /* 270 * The back door to the keyboard driver! 271 * This function is called by the console driver, via the kbdio module, 272 * to tickle keyboard drivers when the low-level console is being initialized. 273 * Almost nothing in the kernel has been initialied yet. Try to probe 274 * keyboards if possible. 275 * NOTE: because of the way the low-level console is initialized, this routine 276 * may be called more than once!! 277 */ 278 static int 279 atkbd_configure(int flags) 280 { 281 keyboard_t *kbd; 282 int arg[2]; 283 int i; 284 285 /* 286 * Probe the keyboard controller, if not present or if the driver 287 * is disabled, unregister the keyboard if any. 288 */ 289 if (atkbdc_configure() != 0 || 290 resource_disabled("atkbd", ATKBD_DEFAULT)) { 291 i = kbd_find_keyboard(ATKBD_DRIVER_NAME, ATKBD_DEFAULT); 292 if (i >= 0) { 293 kbd = kbd_get_keyboard(i); 294 kbd_unregister(kbd); 295 kbd->kb_flags &= ~KB_REGISTERED; 296 } 297 return 0; 298 } 299 300 /* XXX: a kludge to obtain the device configuration flags */ 301 if (resource_int_value("atkbd", ATKBD_DEFAULT, "flags", &i) == 0) 302 flags |= i; 303 304 /* probe the default keyboard */ 305 arg[0] = -1; 306 arg[1] = -1; 307 kbd = NULL; 308 if (atkbd_probe(ATKBD_DEFAULT, arg, flags)) 309 return 0; 310 if (atkbd_init(ATKBD_DEFAULT, &kbd, arg, flags)) 311 return 0; 312 313 /* return the number of found keyboards */ 314 return 1; 315 } 316 317 /* low-level functions */ 318 319 /* detect a keyboard */ 320 static int 321 atkbd_probe(int unit, void *arg, int flags) 322 { 323 KBDC kbdc; 324 int *data = (int *)arg; /* data[0]: controller, data[1]: irq */ 325 326 /* XXX */ 327 if (unit == ATKBD_DEFAULT) { 328 if (KBD_IS_PROBED(&default_kbd)) 329 return 0; 330 } 331 332 kbdc = atkbdc_open(data[0]); 333 if (kbdc == NULL) 334 return ENXIO; 335 if (probe_keyboard(kbdc, flags)) { 336 if (flags & KB_CONF_FAIL_IF_NO_KBD) 337 return ENXIO; 338 } 339 return 0; 340 } 341 342 /* reset and initialize the device */ 343 static int 344 atkbd_init(int unit, keyboard_t **kbdp, void *arg, int flags) 345 { 346 keyboard_t *kbd; 347 atkbd_state_t *state; 348 keymap_t *keymap; 349 accentmap_t *accmap; 350 fkeytab_t *fkeymap; 351 int fkeymap_size; 352 int delay[2]; 353 int *data = (int *)arg; /* data[0]: controller, data[1]: irq */ 354 int error, needfree; 355 356 /* XXX */ 357 if (unit == ATKBD_DEFAULT) { 358 *kbdp = kbd = &default_kbd; 359 if (KBD_IS_INITIALIZED(kbd) && KBD_IS_CONFIGURED(kbd)) 360 return 0; 361 state = &default_kbd_state; 362 keymap = &default_keymap; 363 accmap = &default_accentmap; 364 fkeymap = default_fkeytab; 365 fkeymap_size = 366 sizeof(default_fkeytab)/sizeof(default_fkeytab[0]); 367 needfree = 0; 368 } else if (*kbdp == NULL) { 369 *kbdp = kbd = malloc(sizeof(*kbd), M_DEVBUF, M_NOWAIT | M_ZERO); 370 state = malloc(sizeof(*state), M_DEVBUF, M_NOWAIT | M_ZERO); 371 /* NB: these will always be initialized 'cuz !KBD_IS_PROBED */ 372 keymap = malloc(sizeof(key_map), M_DEVBUF, M_NOWAIT); 373 accmap = malloc(sizeof(accent_map), M_DEVBUF, M_NOWAIT); 374 fkeymap = malloc(sizeof(fkey_tab), M_DEVBUF, M_NOWAIT); 375 fkeymap_size = sizeof(fkey_tab)/sizeof(fkey_tab[0]); 376 needfree = 1; 377 if ((kbd == NULL) || (state == NULL) || (keymap == NULL) 378 || (accmap == NULL) || (fkeymap == NULL)) { 379 error = ENOMEM; 380 goto bad; 381 } 382 } else if (KBD_IS_INITIALIZED(*kbdp) && KBD_IS_CONFIGURED(*kbdp)) { 383 return 0; 384 } else { 385 kbd = *kbdp; 386 state = (atkbd_state_t *)kbd->kb_data; 387 bzero(state, sizeof(*state)); 388 keymap = kbd->kb_keymap; 389 accmap = kbd->kb_accentmap; 390 fkeymap = kbd->kb_fkeytab; 391 fkeymap_size = kbd->kb_fkeytab_size; 392 needfree = 0; 393 } 394 395 if (!KBD_IS_PROBED(kbd)) { 396 state->kbdc = atkbdc_open(data[0]); 397 if (state->kbdc == NULL) { 398 error = ENXIO; 399 goto bad; 400 } 401 kbd_init_struct(kbd, ATKBD_DRIVER_NAME, KB_OTHER, unit, flags, 402 0, 0); 403 bcopy(&key_map, keymap, sizeof(key_map)); 404 bcopy(&accent_map, accmap, sizeof(accent_map)); 405 bcopy(fkey_tab, fkeymap, 406 imin(fkeymap_size * sizeof(fkeymap[0]), sizeof(fkey_tab))); 407 kbd_set_maps(kbd, keymap, accmap, fkeymap, fkeymap_size); 408 kbd->kb_data = (void *)state; 409 410 if (probe_keyboard(state->kbdc, flags)) { /* shouldn't happen */ 411 if (flags & KB_CONF_FAIL_IF_NO_KBD) { 412 error = ENXIO; 413 goto bad; 414 } 415 } else { 416 KBD_FOUND_DEVICE(kbd); 417 } 418 atkbd_clear_state(kbd); 419 state->ks_mode = K_XLATE; 420 /* 421 * FIXME: set the initial value for lock keys in ks_state 422 * according to the BIOS data? 423 */ 424 KBD_PROBE_DONE(kbd); 425 } 426 if (!KBD_IS_INITIALIZED(kbd) && !(flags & KB_CONF_PROBE_ONLY)) { 427 kbd->kb_config = flags & ~KB_CONF_PROBE_ONLY; 428 if (KBD_HAS_DEVICE(kbd) 429 && init_keyboard(state->kbdc, &kbd->kb_type, kbd->kb_config) 430 && (kbd->kb_config & KB_CONF_FAIL_IF_NO_KBD)) { 431 kbd_unregister(kbd); 432 error = ENXIO; 433 goto bad; 434 } 435 atkbd_ioctl(kbd, KDSETLED, (caddr_t)&state->ks_state); 436 get_typematic(kbd); 437 delay[0] = kbd->kb_delay1; 438 delay[1] = kbd->kb_delay2; 439 atkbd_ioctl(kbd, KDSETREPEAT, (caddr_t)delay); 440 KBD_INIT_DONE(kbd); 441 } 442 if (!KBD_IS_CONFIGURED(kbd)) { 443 if (kbd_register(kbd) < 0) { 444 error = ENXIO; 445 goto bad; 446 } 447 KBD_CONFIG_DONE(kbd); 448 } 449 450 return 0; 451 bad: 452 if (needfree) { 453 if (state != NULL) 454 free(state, M_DEVBUF); 455 if (keymap != NULL) 456 free(keymap, M_DEVBUF); 457 if (accmap != NULL) 458 free(accmap, M_DEVBUF); 459 if (fkeymap != NULL) 460 free(fkeymap, M_DEVBUF); 461 if (kbd != NULL) { 462 free(kbd, M_DEVBUF); 463 *kbdp = NULL; /* insure ref doesn't leak to caller */ 464 } 465 } 466 return error; 467 } 468 469 /* finish using this keyboard */ 470 static int 471 atkbd_term(keyboard_t *kbd) 472 { 473 kbd_unregister(kbd); 474 return 0; 475 } 476 477 /* keyboard interrupt routine */ 478 static int 479 atkbd_intr(keyboard_t *kbd, void *arg) 480 { 481 atkbd_state_t *state = (atkbd_state_t *)kbd->kb_data; 482 int delay[2]; 483 int c; 484 485 if (!KBD_HAS_DEVICE(kbd)) { 486 /* 487 * The keyboard was not detected before; 488 * it must have been reconnected! 489 */ 490 init_keyboard(state->kbdc, &kbd->kb_type, kbd->kb_config); 491 KBD_FOUND_DEVICE(kbd); 492 atkbd_ioctl(kbd, KDSETLED, (caddr_t)&state->ks_state); 493 get_typematic(kbd); 494 delay[0] = kbd->kb_delay1; 495 delay[1] = kbd->kb_delay2; 496 atkbd_ioctl(kbd, KDSETREPEAT, (caddr_t)delay); 497 } 498 499 if (state->ks_polling) 500 return 0; 501 502 if (KBD_IS_ACTIVE(kbd) && KBD_IS_BUSY(kbd)) { 503 /* let the callback function to process the input */ 504 (*kbd->kb_callback.kc_func)(kbd, KBDIO_KEYINPUT, 505 kbd->kb_callback.kc_arg); 506 } else { 507 /* read and discard the input; no one is waiting for input */ 508 do { 509 c = atkbd_read_char(kbd, FALSE); 510 } while (c != NOKEY); 511 } 512 return 0; 513 } 514 515 /* test the interface to the device */ 516 static int 517 atkbd_test_if(keyboard_t *kbd) 518 { 519 int error; 520 int s; 521 522 error = 0; 523 empty_both_buffers(((atkbd_state_t *)kbd->kb_data)->kbdc, 10); 524 s = spltty(); 525 if (!test_controller(((atkbd_state_t *)kbd->kb_data)->kbdc)) 526 error = EIO; 527 else if (test_kbd_port(((atkbd_state_t *)kbd->kb_data)->kbdc) != 0) 528 error = EIO; 529 splx(s); 530 531 return error; 532 } 533 534 /* 535 * Enable the access to the device; until this function is called, 536 * the client cannot read from the keyboard. 537 */ 538 static int 539 atkbd_enable(keyboard_t *kbd) 540 { 541 int s; 542 543 s = spltty(); 544 KBD_ACTIVATE(kbd); 545 splx(s); 546 return 0; 547 } 548 549 /* disallow the access to the device */ 550 static int 551 atkbd_disable(keyboard_t *kbd) 552 { 553 int s; 554 555 s = spltty(); 556 KBD_DEACTIVATE(kbd); 557 splx(s); 558 return 0; 559 } 560 561 /* read one byte from the keyboard if it's allowed */ 562 static int 563 atkbd_read(keyboard_t *kbd, int wait) 564 { 565 int c; 566 567 if (wait) 568 c = read_kbd_data(((atkbd_state_t *)kbd->kb_data)->kbdc); 569 else 570 c = read_kbd_data_no_wait(((atkbd_state_t *)kbd->kb_data)->kbdc); 571 if (c != -1) 572 ++kbd->kb_count; 573 return (KBD_IS_ACTIVE(kbd) ? c : -1); 574 } 575 576 /* check if data is waiting */ 577 static int 578 atkbd_check(keyboard_t *kbd) 579 { 580 if (!KBD_IS_ACTIVE(kbd)) 581 return FALSE; 582 return kbdc_data_ready(((atkbd_state_t *)kbd->kb_data)->kbdc); 583 } 584 585 /* read char from the keyboard */ 586 static u_int 587 atkbd_read_char(keyboard_t *kbd, int wait) 588 { 589 atkbd_state_t *state; 590 u_int action; 591 int scancode; 592 int keycode; 593 594 state = (atkbd_state_t *)kbd->kb_data; 595 next_code: 596 /* do we have a composed char to return? */ 597 if (!(state->ks_flags & COMPOSE) && (state->ks_composed_char > 0)) { 598 action = state->ks_composed_char; 599 state->ks_composed_char = 0; 600 if (action > UCHAR_MAX) 601 return ERRKEY; 602 return action; 603 } 604 605 /* see if there is something in the keyboard port */ 606 if (wait) { 607 do { 608 scancode = read_kbd_data(state->kbdc); 609 } while (scancode == -1); 610 } else { 611 scancode = read_kbd_data_no_wait(state->kbdc); 612 if (scancode == -1) 613 return NOKEY; 614 } 615 ++kbd->kb_count; 616 617 #if KBDIO_DEBUG >= 10 618 printf("atkbd_read_char(): scancode:0x%x\n", scancode); 619 #endif 620 621 /* return the byte as is for the K_RAW mode */ 622 if (state->ks_mode == K_RAW) 623 return scancode; 624 625 /* translate the scan code into a keycode */ 626 keycode = scancode & 0x7F; 627 switch (state->ks_prefix) { 628 case 0x00: /* normal scancode */ 629 switch(scancode) { 630 case 0xB8: /* left alt (compose key) released */ 631 if (state->ks_flags & COMPOSE) { 632 state->ks_flags &= ~COMPOSE; 633 if (state->ks_composed_char > UCHAR_MAX) 634 state->ks_composed_char = 0; 635 } 636 break; 637 case 0x38: /* left alt (compose key) pressed */ 638 if (!(state->ks_flags & COMPOSE)) { 639 state->ks_flags |= COMPOSE; 640 state->ks_composed_char = 0; 641 } 642 break; 643 case 0xE0: 644 case 0xE1: 645 state->ks_prefix = scancode; 646 goto next_code; 647 } 648 break; 649 case 0xE0: /* 0xE0 prefix */ 650 state->ks_prefix = 0; 651 switch (keycode) { 652 case 0x1C: /* right enter key */ 653 keycode = 0x59; 654 break; 655 case 0x1D: /* right ctrl key */ 656 keycode = 0x5A; 657 break; 658 case 0x35: /* keypad divide key */ 659 keycode = 0x5B; 660 break; 661 case 0x37: /* print scrn key */ 662 keycode = 0x5C; 663 break; 664 case 0x38: /* right alt key (alt gr) */ 665 keycode = 0x5D; 666 break; 667 case 0x46: /* ctrl-pause/break on AT 101 (see below) */ 668 keycode = 0x68; 669 break; 670 case 0x47: /* grey home key */ 671 keycode = 0x5E; 672 break; 673 case 0x48: /* grey up arrow key */ 674 keycode = 0x5F; 675 break; 676 case 0x49: /* grey page up key */ 677 keycode = 0x60; 678 break; 679 case 0x4B: /* grey left arrow key */ 680 keycode = 0x61; 681 break; 682 case 0x4D: /* grey right arrow key */ 683 keycode = 0x62; 684 break; 685 case 0x4F: /* grey end key */ 686 keycode = 0x63; 687 break; 688 case 0x50: /* grey down arrow key */ 689 keycode = 0x64; 690 break; 691 case 0x51: /* grey page down key */ 692 keycode = 0x65; 693 break; 694 case 0x52: /* grey insert key */ 695 keycode = 0x66; 696 break; 697 case 0x53: /* grey delete key */ 698 keycode = 0x67; 699 break; 700 /* the following 3 are only used on the MS "Natural" keyboard */ 701 case 0x5b: /* left Window key */ 702 keycode = 0x69; 703 break; 704 case 0x5c: /* right Window key */ 705 keycode = 0x6a; 706 break; 707 case 0x5d: /* menu key */ 708 keycode = 0x6b; 709 break; 710 case 0x5e: /* power key */ 711 keycode = 0x6d; 712 break; 713 case 0x5f: /* sleep key */ 714 keycode = 0x6e; 715 break; 716 case 0x63: /* wake key */ 717 keycode = 0x6f; 718 break; 719 default: /* ignore everything else */ 720 goto next_code; 721 } 722 break; 723 case 0xE1: /* 0xE1 prefix */ 724 /* 725 * The pause/break key on the 101 keyboard produces: 726 * E1-1D-45 E1-9D-C5 727 * Ctrl-pause/break produces: 728 * E0-46 E0-C6 (See above.) 729 */ 730 state->ks_prefix = 0; 731 if (keycode == 0x1D) 732 state->ks_prefix = 0x1D; 733 goto next_code; 734 /* NOT REACHED */ 735 case 0x1D: /* pause / break */ 736 state->ks_prefix = 0; 737 if (keycode != 0x45) 738 goto next_code; 739 keycode = 0x68; 740 break; 741 } 742 743 if (kbd->kb_type == KB_84) { 744 switch (keycode) { 745 case 0x37: /* *(numpad)/print screen */ 746 if (state->ks_flags & SHIFTS) 747 keycode = 0x5c; /* print screen */ 748 break; 749 case 0x45: /* num lock/pause */ 750 if (state->ks_flags & CTLS) 751 keycode = 0x68; /* pause */ 752 break; 753 case 0x46: /* scroll lock/break */ 754 if (state->ks_flags & CTLS) 755 keycode = 0x6c; /* break */ 756 break; 757 } 758 } else if (kbd->kb_type == KB_101) { 759 switch (keycode) { 760 case 0x5c: /* print screen */ 761 if (state->ks_flags & ALTS) 762 keycode = 0x54; /* sysrq */ 763 break; 764 case 0x68: /* pause/break */ 765 if (state->ks_flags & CTLS) 766 keycode = 0x6c; /* break */ 767 break; 768 } 769 } 770 771 /* return the key code in the K_CODE mode */ 772 if (state->ks_mode == K_CODE) 773 return (keycode | (scancode & 0x80)); 774 775 /* compose a character code */ 776 if (state->ks_flags & COMPOSE) { 777 switch (keycode | (scancode & 0x80)) { 778 /* key pressed, process it */ 779 case 0x47: case 0x48: case 0x49: /* keypad 7,8,9 */ 780 state->ks_composed_char *= 10; 781 state->ks_composed_char += keycode - 0x40; 782 if (state->ks_composed_char > UCHAR_MAX) 783 return ERRKEY; 784 goto next_code; 785 case 0x4B: case 0x4C: case 0x4D: /* keypad 4,5,6 */ 786 state->ks_composed_char *= 10; 787 state->ks_composed_char += keycode - 0x47; 788 if (state->ks_composed_char > UCHAR_MAX) 789 return ERRKEY; 790 goto next_code; 791 case 0x4F: case 0x50: case 0x51: /* keypad 1,2,3 */ 792 state->ks_composed_char *= 10; 793 state->ks_composed_char += keycode - 0x4E; 794 if (state->ks_composed_char > UCHAR_MAX) 795 return ERRKEY; 796 goto next_code; 797 case 0x52: /* keypad 0 */ 798 state->ks_composed_char *= 10; 799 if (state->ks_composed_char > UCHAR_MAX) 800 return ERRKEY; 801 goto next_code; 802 803 /* key released, no interest here */ 804 case 0xC7: case 0xC8: case 0xC9: /* keypad 7,8,9 */ 805 case 0xCB: case 0xCC: case 0xCD: /* keypad 4,5,6 */ 806 case 0xCF: case 0xD0: case 0xD1: /* keypad 1,2,3 */ 807 case 0xD2: /* keypad 0 */ 808 goto next_code; 809 810 case 0x38: /* left alt key */ 811 break; 812 813 default: 814 if (state->ks_composed_char > 0) { 815 state->ks_flags &= ~COMPOSE; 816 state->ks_composed_char = 0; 817 return ERRKEY; 818 } 819 break; 820 } 821 } 822 823 /* keycode to key action */ 824 action = genkbd_keyaction(kbd, keycode, scancode & 0x80, 825 &state->ks_state, &state->ks_accents); 826 if (action == NOKEY) 827 goto next_code; 828 else 829 return action; 830 } 831 832 /* check if char is waiting */ 833 static int 834 atkbd_check_char(keyboard_t *kbd) 835 { 836 atkbd_state_t *state; 837 838 if (!KBD_IS_ACTIVE(kbd)) 839 return FALSE; 840 state = (atkbd_state_t *)kbd->kb_data; 841 if (!(state->ks_flags & COMPOSE) && (state->ks_composed_char > 0)) 842 return TRUE; 843 return kbdc_data_ready(state->kbdc); 844 } 845 846 /* some useful control functions */ 847 static int 848 atkbd_ioctl(keyboard_t *kbd, u_long cmd, caddr_t arg) 849 { 850 /* translate LED_XXX bits into the device specific bits */ 851 static u_char ledmap[8] = { 852 0, 4, 2, 6, 1, 5, 3, 7, 853 }; 854 atkbd_state_t *state = kbd->kb_data; 855 int error; 856 int s; 857 int i; 858 #if defined(COMPAT_FREEBSD6) || defined(COMPAT_FREEBSD5) || \ 859 defined(COMPAT_FREEBSD4) || defined(COMPAT_43) 860 int ival; 861 #endif 862 863 s = spltty(); 864 switch (cmd) { 865 866 case KDGKBMODE: /* get keyboard mode */ 867 *(int *)arg = state->ks_mode; 868 break; 869 #if defined(COMPAT_FREEBSD6) || defined(COMPAT_FREEBSD5) || \ 870 defined(COMPAT_FREEBSD4) || defined(COMPAT_43) 871 case _IO('K', 7): 872 ival = IOCPARM_IVAL(arg); 873 arg = (caddr_t)&ival; 874 /* FALLTHROUGH */ 875 #endif 876 case KDSKBMODE: /* set keyboard mode */ 877 switch (*(int *)arg) { 878 case K_XLATE: 879 if (state->ks_mode != K_XLATE) { 880 /* make lock key state and LED state match */ 881 state->ks_state &= ~LOCK_MASK; 882 state->ks_state |= KBD_LED_VAL(kbd); 883 } 884 /* FALLTHROUGH */ 885 case K_RAW: 886 case K_CODE: 887 if (state->ks_mode != *(int *)arg) { 888 atkbd_clear_state(kbd); 889 state->ks_mode = *(int *)arg; 890 } 891 break; 892 default: 893 splx(s); 894 return EINVAL; 895 } 896 break; 897 898 case KDGETLED: /* get keyboard LED */ 899 *(int *)arg = KBD_LED_VAL(kbd); 900 break; 901 #if defined(COMPAT_FREEBSD6) || defined(COMPAT_FREEBSD5) || \ 902 defined(COMPAT_FREEBSD4) || defined(COMPAT_43) 903 case _IO('K', 66): 904 ival = IOCPARM_IVAL(arg); 905 arg = (caddr_t)&ival; 906 /* FALLTHROUGH */ 907 #endif 908 case KDSETLED: /* set keyboard LED */ 909 /* NOTE: lock key state in ks_state won't be changed */ 910 if (*(int *)arg & ~LOCK_MASK) { 911 splx(s); 912 return EINVAL; 913 } 914 i = *(int *)arg; 915 /* replace CAPS LED with ALTGR LED for ALTGR keyboards */ 916 if (state->ks_mode == K_XLATE && 917 kbd->kb_keymap->n_keys > ALTGR_OFFSET) { 918 if (i & ALKED) 919 i |= CLKED; 920 else 921 i &= ~CLKED; 922 } 923 if (KBD_HAS_DEVICE(kbd)) { 924 error = write_kbd(state->kbdc, KBDC_SET_LEDS, 925 ledmap[i & LED_MASK]); 926 if (error) { 927 splx(s); 928 return error; 929 } 930 } 931 KBD_LED_VAL(kbd) = *(int *)arg; 932 break; 933 934 case KDGKBSTATE: /* get lock key state */ 935 *(int *)arg = state->ks_state & LOCK_MASK; 936 break; 937 #if defined(COMPAT_FREEBSD6) || defined(COMPAT_FREEBSD5) || \ 938 defined(COMPAT_FREEBSD4) || defined(COMPAT_43) 939 case _IO('K', 20): 940 ival = IOCPARM_IVAL(arg); 941 arg = (caddr_t)&ival; 942 /* FALLTHROUGH */ 943 #endif 944 case KDSKBSTATE: /* set lock key state */ 945 if (*(int *)arg & ~LOCK_MASK) { 946 splx(s); 947 return EINVAL; 948 } 949 state->ks_state &= ~LOCK_MASK; 950 state->ks_state |= *(int *)arg; 951 splx(s); 952 /* set LEDs and quit */ 953 return atkbd_ioctl(kbd, KDSETLED, arg); 954 955 case KDSETREPEAT: /* set keyboard repeat rate (new interface) */ 956 splx(s); 957 if (!KBD_HAS_DEVICE(kbd)) 958 return 0; 959 i = typematic(((int *)arg)[0], ((int *)arg)[1]); 960 error = write_kbd(state->kbdc, KBDC_SET_TYPEMATIC, i); 961 if (error == 0) { 962 kbd->kb_delay1 = typematic_delay(i); 963 kbd->kb_delay2 = typematic_rate(i); 964 } 965 return error; 966 967 #if defined(COMPAT_FREEBSD6) || defined(COMPAT_FREEBSD5) || \ 968 defined(COMPAT_FREEBSD4) || defined(COMPAT_43) 969 case _IO('K', 67): 970 ival = IOCPARM_IVAL(arg); 971 arg = (caddr_t)&ival; 972 /* FALLTHROUGH */ 973 #endif 974 case KDSETRAD: /* set keyboard repeat rate (old interface) */ 975 splx(s); 976 if (!KBD_HAS_DEVICE(kbd)) 977 return 0; 978 error = write_kbd(state->kbdc, KBDC_SET_TYPEMATIC, *(int *)arg); 979 if (error == 0) { 980 kbd->kb_delay1 = typematic_delay(*(int *)arg); 981 kbd->kb_delay2 = typematic_rate(*(int *)arg); 982 } 983 return error; 984 985 case PIO_KEYMAP: /* set keyboard translation table */ 986 case OPIO_KEYMAP: /* set keyboard translation table (compat) */ 987 case PIO_KEYMAPENT: /* set keyboard translation table entry */ 988 case PIO_DEADKEYMAP: /* set accent key translation table */ 989 state->ks_accents = 0; 990 /* FALLTHROUGH */ 991 default: 992 splx(s); 993 return genkbd_commonioctl(kbd, cmd, arg); 994 } 995 996 splx(s); 997 return 0; 998 } 999 1000 /* lock the access to the keyboard */ 1001 static int 1002 atkbd_lock(keyboard_t *kbd, int lock) 1003 { 1004 return kbdc_lock(((atkbd_state_t *)kbd->kb_data)->kbdc, lock); 1005 } 1006 1007 /* clear the internal state of the keyboard */ 1008 static void 1009 atkbd_clear_state(keyboard_t *kbd) 1010 { 1011 atkbd_state_t *state; 1012 1013 state = (atkbd_state_t *)kbd->kb_data; 1014 state->ks_flags = 0; 1015 state->ks_polling = 0; 1016 state->ks_state &= LOCK_MASK; /* preserve locking key state */ 1017 state->ks_accents = 0; 1018 state->ks_composed_char = 0; 1019 #if 0 1020 state->ks_prefix = 0; /* XXX */ 1021 #endif 1022 } 1023 1024 /* save the internal state */ 1025 static int 1026 atkbd_get_state(keyboard_t *kbd, void *buf, size_t len) 1027 { 1028 if (len == 0) 1029 return sizeof(atkbd_state_t); 1030 if (len < sizeof(atkbd_state_t)) 1031 return -1; 1032 bcopy(kbd->kb_data, buf, sizeof(atkbd_state_t)); 1033 return 0; 1034 } 1035 1036 /* set the internal state */ 1037 static int 1038 atkbd_set_state(keyboard_t *kbd, void *buf, size_t len) 1039 { 1040 if (len < sizeof(atkbd_state_t)) 1041 return ENOMEM; 1042 if (((atkbd_state_t *)kbd->kb_data)->kbdc 1043 != ((atkbd_state_t *)buf)->kbdc) 1044 return ENOMEM; 1045 bcopy(buf, kbd->kb_data, sizeof(atkbd_state_t)); 1046 return 0; 1047 } 1048 1049 static int 1050 atkbd_poll(keyboard_t *kbd, int on) 1051 { 1052 atkbd_state_t *state; 1053 int s; 1054 1055 state = (atkbd_state_t *)kbd->kb_data; 1056 s = spltty(); 1057 if (on) 1058 ++state->ks_polling; 1059 else 1060 --state->ks_polling; 1061 splx(s); 1062 return 0; 1063 } 1064 1065 static void 1066 atkbd_shutdown_final(void *v) 1067 { 1068 #ifdef __sparc64__ 1069 keyboard_t *kbd = v; 1070 KBDC kbdc = ((atkbd_state_t *)kbd->kb_data)->kbdc; 1071 1072 /* 1073 * Turn off the translation in preparation for handing the keyboard 1074 * over to the OFW as the OBP driver doesn't use translation and 1075 * also doesn't disable it itself resulting in a broken keymap at 1076 * the boot prompt. Also disable the aux port and the interrupts as 1077 * the OBP driver doesn't use them, i.e. polls the keyboard. Not 1078 * disabling the interrupts doesn't cause real problems but the 1079 * responsiveness is a bit better when they are turned off. 1080 */ 1081 send_kbd_command(kbdc, KBDC_DISABLE_KBD); 1082 set_controller_command_byte(kbdc, 1083 KBD_AUX_CONTROL_BITS | KBD_KBD_CONTROL_BITS | KBD_TRANSLATION, 1084 KBD_DISABLE_AUX_PORT | KBD_DISABLE_KBD_INT | KBD_ENABLE_KBD_PORT); 1085 send_kbd_command(kbdc, KBDC_ENABLE_KBD); 1086 #endif 1087 } 1088 1089 /* local functions */ 1090 1091 static int 1092 get_typematic(keyboard_t *kbd) 1093 { 1094 #if defined(__i386__) || defined(__amd64__) 1095 /* 1096 * Only some systems allow us to retrieve the keyboard repeat 1097 * rate previously set via the BIOS... 1098 */ 1099 x86regs_t regs; 1100 uint8_t *p; 1101 1102 /* 1103 * Traditional entry points of int 0x15 and 0x16 are fixed 1104 * and later BIOSes follow them. (U)EFI CSM specification 1105 * also mandates these fixed entry points. 1106 * 1107 * Validate the entry points here before we proceed further. 1108 * It's known that some recent laptops does not have the 1109 * same entry point and hang on boot if we call it. 1110 */ 1111 if (x86bios_get_intr(0x15) != 0xf000f859 || 1112 x86bios_get_intr(0x16) != 0xf000e82e) 1113 return (ENODEV); 1114 1115 /* Is BIOS system configuration table supported? */ 1116 x86bios_init_regs(®s); 1117 regs.R_AH = 0xc0; 1118 x86bios_intr(®s, 0x15); 1119 if ((regs.R_FLG & PSL_C) != 0 || regs.R_AH != 0) 1120 return (ENODEV); 1121 1122 /* Is int 0x16, function 0x09 supported? */ 1123 p = x86bios_offset((regs.R_ES << 4) + regs.R_BX); 1124 if (readw(p) < 5 || (readb(p + 6) & 0x40) == 0) 1125 return (ENODEV); 1126 1127 /* Is int 0x16, function 0x0306 supported? */ 1128 x86bios_init_regs(®s); 1129 regs.R_AH = 0x09; 1130 x86bios_intr(®s, 0x16); 1131 if ((regs.R_AL & 0x08) == 0) 1132 return (ENODEV); 1133 1134 x86bios_init_regs(®s); 1135 regs.R_AX = 0x0306; 1136 x86bios_intr(®s, 0x16); 1137 kbd->kb_delay1 = typematic_delay(regs.R_BH << 5); 1138 kbd->kb_delay2 = typematic_rate(regs.R_BL); 1139 return (0); 1140 #else 1141 return (ENODEV); 1142 #endif /* __i386__ || __amd64__ */ 1143 } 1144 1145 static int 1146 setup_kbd_port(KBDC kbdc, int port, int intr) 1147 { 1148 if (!set_controller_command_byte(kbdc, 1149 KBD_KBD_CONTROL_BITS, 1150 ((port) ? KBD_ENABLE_KBD_PORT : KBD_DISABLE_KBD_PORT) 1151 | ((intr) ? KBD_ENABLE_KBD_INT : KBD_DISABLE_KBD_INT))) 1152 return 1; 1153 return 0; 1154 } 1155 1156 static int 1157 get_kbd_echo(KBDC kbdc) 1158 { 1159 /* enable the keyboard port, but disable the keyboard intr. */ 1160 if (setup_kbd_port(kbdc, TRUE, FALSE)) 1161 /* CONTROLLER ERROR: there is very little we can do... */ 1162 return ENXIO; 1163 1164 /* see if something is present */ 1165 write_kbd_command(kbdc, KBDC_ECHO); 1166 if (read_kbd_data(kbdc) != KBD_ECHO) { 1167 empty_both_buffers(kbdc, 10); 1168 test_controller(kbdc); 1169 test_kbd_port(kbdc); 1170 return ENXIO; 1171 } 1172 1173 /* enable the keyboard port and intr. */ 1174 if (setup_kbd_port(kbdc, TRUE, TRUE)) { 1175 /* 1176 * CONTROLLER ERROR 1177 * This is serious; the keyboard intr is left disabled! 1178 */ 1179 return ENXIO; 1180 } 1181 1182 return 0; 1183 } 1184 1185 static int 1186 probe_keyboard(KBDC kbdc, int flags) 1187 { 1188 /* 1189 * Don't try to print anything in this function. The low-level 1190 * console may not have been initialized yet... 1191 */ 1192 int err; 1193 int c; 1194 int m; 1195 1196 if (!kbdc_lock(kbdc, TRUE)) { 1197 /* driver error? */ 1198 return ENXIO; 1199 } 1200 1201 /* temporarily block data transmission from the keyboard */ 1202 write_controller_command(kbdc, KBDC_DISABLE_KBD_PORT); 1203 1204 /* flush any noise in the buffer */ 1205 empty_both_buffers(kbdc, 100); 1206 1207 /* save the current keyboard controller command byte */ 1208 m = kbdc_get_device_mask(kbdc) & ~KBD_KBD_CONTROL_BITS; 1209 c = get_controller_command_byte(kbdc); 1210 if (c == -1) { 1211 /* CONTROLLER ERROR */ 1212 kbdc_set_device_mask(kbdc, m); 1213 kbdc_lock(kbdc, FALSE); 1214 return ENXIO; 1215 } 1216 1217 /* 1218 * The keyboard may have been screwed up by the boot block. 1219 * We may just be able to recover from error by testing the controller 1220 * and the keyboard port. The controller command byte needs to be 1221 * saved before this recovery operation, as some controllers seem 1222 * to set the command byte to particular values. 1223 */ 1224 test_controller(kbdc); 1225 if (!(flags & KB_CONF_NO_PROBE_TEST)) 1226 test_kbd_port(kbdc); 1227 1228 err = get_kbd_echo(kbdc); 1229 1230 /* 1231 * Even if the keyboard doesn't seem to be present (err != 0), 1232 * we shall enable the keyboard port and interrupt so that 1233 * the driver will be operable when the keyboard is attached 1234 * to the system later. It is NOT recommended to hot-plug 1235 * the AT keyboard, but many people do so... 1236 */ 1237 kbdc_set_device_mask(kbdc, m | KBD_KBD_CONTROL_BITS); 1238 setup_kbd_port(kbdc, TRUE, TRUE); 1239 #if 0 1240 if (err == 0) { 1241 kbdc_set_device_mask(kbdc, m | KBD_KBD_CONTROL_BITS); 1242 } else { 1243 /* try to restore the command byte as before */ 1244 set_controller_command_byte(kbdc, 0xff, c); 1245 kbdc_set_device_mask(kbdc, m); 1246 } 1247 #endif 1248 1249 kbdc_lock(kbdc, FALSE); 1250 return err; 1251 } 1252 1253 static int 1254 init_keyboard(KBDC kbdc, int *type, int flags) 1255 { 1256 int codeset; 1257 int id; 1258 int c; 1259 1260 if (!kbdc_lock(kbdc, TRUE)) { 1261 /* driver error? */ 1262 return EIO; 1263 } 1264 1265 /* temporarily block data transmission from the keyboard */ 1266 write_controller_command(kbdc, KBDC_DISABLE_KBD_PORT); 1267 1268 /* save the current controller command byte */ 1269 empty_both_buffers(kbdc, 200); 1270 c = get_controller_command_byte(kbdc); 1271 if (c == -1) { 1272 /* CONTROLLER ERROR */ 1273 kbdc_lock(kbdc, FALSE); 1274 printf("atkbd: unable to get the current command byte value.\n"); 1275 return EIO; 1276 } 1277 if (bootverbose) 1278 printf("atkbd: the current kbd controller command byte %04x\n", 1279 c); 1280 #if 0 1281 /* override the keyboard lock switch */ 1282 c |= KBD_OVERRIDE_KBD_LOCK; 1283 #endif 1284 1285 /* enable the keyboard port, but disable the keyboard intr. */ 1286 if (setup_kbd_port(kbdc, TRUE, FALSE)) { 1287 /* CONTROLLER ERROR: there is very little we can do... */ 1288 printf("atkbd: unable to set the command byte.\n"); 1289 kbdc_lock(kbdc, FALSE); 1290 return EIO; 1291 } 1292 1293 /* 1294 * Check if we have an XT keyboard before we attempt to reset it. 1295 * The procedure assumes that the keyboard and the controller have 1296 * been set up properly by BIOS and have not been messed up 1297 * during the boot process. 1298 */ 1299 codeset = -1; 1300 if (flags & KB_CONF_ALT_SCANCODESET) 1301 /* the user says there is a XT keyboard */ 1302 codeset = 1; 1303 #ifdef KBD_DETECT_XT_KEYBOARD 1304 else if ((c & KBD_TRANSLATION) == 0) { 1305 /* SET_SCANCODE_SET is not always supported; ignore error */ 1306 if (send_kbd_command_and_data(kbdc, KBDC_SET_SCANCODE_SET, 0) 1307 == KBD_ACK) 1308 codeset = read_kbd_data(kbdc); 1309 } 1310 if (bootverbose) 1311 printf("atkbd: scancode set %d\n", codeset); 1312 #endif /* KBD_DETECT_XT_KEYBOARD */ 1313 1314 *type = KB_OTHER; 1315 id = get_kbd_id(kbdc); 1316 switch(id) { 1317 case 0x41ab: /* 101/102/... Enhanced */ 1318 case 0x83ab: /* ditto */ 1319 case 0x54ab: /* SpaceSaver */ 1320 case 0x84ab: /* ditto */ 1321 #if 0 1322 case 0x90ab: /* 'G' */ 1323 case 0x91ab: /* 'P' */ 1324 case 0x92ab: /* 'A' */ 1325 #endif 1326 *type = KB_101; 1327 break; 1328 case -1: /* AT 84 keyboard doesn't return ID */ 1329 *type = KB_84; 1330 break; 1331 default: 1332 break; 1333 } 1334 if (bootverbose) 1335 printf("atkbd: keyboard ID 0x%x (%d)\n", id, *type); 1336 1337 /* reset keyboard hardware */ 1338 if (!(flags & KB_CONF_NO_RESET) && !reset_kbd(kbdc)) { 1339 /* 1340 * KEYBOARD ERROR 1341 * Keyboard reset may fail either because the keyboard 1342 * doen't exist, or because the keyboard doesn't pass 1343 * the self-test, or the keyboard controller on the 1344 * motherboard and the keyboard somehow fail to shake hands. 1345 * It is just possible, particularly in the last case, 1346 * that the keyboard controller may be left in a hung state. 1347 * test_controller() and test_kbd_port() appear to bring 1348 * the keyboard controller back (I don't know why and how, 1349 * though.) 1350 */ 1351 empty_both_buffers(kbdc, 10); 1352 test_controller(kbdc); 1353 test_kbd_port(kbdc); 1354 /* 1355 * We could disable the keyboard port and interrupt... but, 1356 * the keyboard may still exist (see above). 1357 */ 1358 set_controller_command_byte(kbdc, 0xff, c); 1359 kbdc_lock(kbdc, FALSE); 1360 if (bootverbose) 1361 printf("atkbd: failed to reset the keyboard.\n"); 1362 return EIO; 1363 } 1364 1365 /* 1366 * Allow us to set the XT_KEYBD flag so that keyboards 1367 * such as those on the IBM ThinkPad laptop computers can be used 1368 * with the standard console driver. 1369 */ 1370 if (codeset == 1) { 1371 if (send_kbd_command_and_data(kbdc, 1372 KBDC_SET_SCANCODE_SET, codeset) == KBD_ACK) { 1373 /* XT kbd doesn't need scan code translation */ 1374 c &= ~KBD_TRANSLATION; 1375 } else { 1376 /* 1377 * KEYBOARD ERROR 1378 * The XT kbd isn't usable unless the proper scan 1379 * code set is selected. 1380 */ 1381 set_controller_command_byte(kbdc, 0xff, c); 1382 kbdc_lock(kbdc, FALSE); 1383 printf("atkbd: unable to set the XT keyboard mode.\n"); 1384 return EIO; 1385 } 1386 } 1387 1388 #if defined(__sparc64__) 1389 if (send_kbd_command_and_data( 1390 kbdc, KBDC_SET_SCANCODE_SET, 2) != KBD_ACK) { 1391 printf("atkbd: can't set translation.\n"); 1392 } 1393 c |= KBD_TRANSLATION; 1394 #endif 1395 1396 /* enable the keyboard port and intr. */ 1397 if (!set_controller_command_byte(kbdc, 1398 KBD_KBD_CONTROL_BITS | KBD_TRANSLATION | KBD_OVERRIDE_KBD_LOCK, 1399 (c & (KBD_TRANSLATION | KBD_OVERRIDE_KBD_LOCK)) 1400 | KBD_ENABLE_KBD_PORT | KBD_ENABLE_KBD_INT)) { 1401 /* 1402 * CONTROLLER ERROR 1403 * This is serious; we are left with the disabled 1404 * keyboard intr. 1405 */ 1406 set_controller_command_byte(kbdc, 0xff, c); 1407 kbdc_lock(kbdc, FALSE); 1408 printf("atkbd: unable to enable the keyboard port and intr.\n"); 1409 return EIO; 1410 } 1411 1412 kbdc_lock(kbdc, FALSE); 1413 return 0; 1414 } 1415 1416 static int 1417 write_kbd(KBDC kbdc, int command, int data) 1418 { 1419 int s; 1420 1421 /* prevent the timeout routine from polling the keyboard */ 1422 if (!kbdc_lock(kbdc, TRUE)) 1423 return EBUSY; 1424 1425 /* disable the keyboard and mouse interrupt */ 1426 s = spltty(); 1427 #if 0 1428 c = get_controller_command_byte(kbdc); 1429 if ((c == -1) 1430 || !set_controller_command_byte(kbdc, 1431 kbdc_get_device_mask(kbdc), 1432 KBD_DISABLE_KBD_PORT | KBD_DISABLE_KBD_INT 1433 | KBD_DISABLE_AUX_PORT | KBD_DISABLE_AUX_INT)) { 1434 /* CONTROLLER ERROR */ 1435 kbdc_lock(kbdc, FALSE); 1436 splx(s); 1437 return EIO; 1438 } 1439 /* 1440 * Now that the keyboard controller is told not to generate 1441 * the keyboard and mouse interrupts, call `splx()' to allow 1442 * the other tty interrupts. The clock interrupt may also occur, 1443 * but the timeout routine (`scrn_timer()') will be blocked 1444 * by the lock flag set via `kbdc_lock()' 1445 */ 1446 splx(s); 1447 #endif 1448 if (send_kbd_command_and_data(kbdc, command, data) != KBD_ACK) 1449 send_kbd_command(kbdc, KBDC_ENABLE_KBD); 1450 #if 0 1451 /* restore the interrupts */ 1452 if (!set_controller_command_byte(kbdc, kbdc_get_device_mask(kbdc), 1453 c & (KBD_KBD_CONTROL_BITS | KBD_AUX_CONTROL_BITS))) { 1454 /* CONTROLLER ERROR */ 1455 } 1456 #else 1457 splx(s); 1458 #endif 1459 kbdc_lock(kbdc, FALSE); 1460 1461 return 0; 1462 } 1463 1464 static int 1465 get_kbd_id(KBDC kbdc) 1466 { 1467 int id1, id2; 1468 1469 empty_both_buffers(kbdc, 10); 1470 id1 = id2 = -1; 1471 if (send_kbd_command(kbdc, KBDC_SEND_DEV_ID) != KBD_ACK) 1472 return -1; 1473 1474 DELAY(10000); /* 10 msec delay */ 1475 id1 = read_kbd_data(kbdc); 1476 if (id1 != -1) 1477 id2 = read_kbd_data(kbdc); 1478 1479 if ((id1 == -1) || (id2 == -1)) { 1480 empty_both_buffers(kbdc, 10); 1481 test_controller(kbdc); 1482 test_kbd_port(kbdc); 1483 return -1; 1484 } 1485 return ((id2 << 8) | id1); 1486 } 1487 1488 static int delays[] = { 250, 500, 750, 1000 }; 1489 static int rates[] = { 34, 38, 42, 46, 50, 55, 59, 63, 1490 68, 76, 84, 92, 100, 110, 118, 126, 1491 136, 152, 168, 184, 200, 220, 236, 252, 1492 272, 304, 336, 368, 400, 440, 472, 504 }; 1493 1494 static int 1495 typematic_delay(int i) 1496 { 1497 return delays[(i >> 5) & 3]; 1498 } 1499 1500 static int 1501 typematic_rate(int i) 1502 { 1503 return rates[i & 0x1f]; 1504 } 1505 1506 static int 1507 typematic(int delay, int rate) 1508 { 1509 int value; 1510 int i; 1511 1512 for (i = sizeof(delays)/sizeof(delays[0]) - 1; i > 0; --i) { 1513 if (delay >= delays[i]) 1514 break; 1515 } 1516 value = i << 5; 1517 for (i = sizeof(rates)/sizeof(rates[0]) - 1; i > 0; --i) { 1518 if (rate >= rates[i]) 1519 break; 1520 } 1521 value |= i; 1522 return value; 1523 }
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