1 /*- 2 * (MPSAFE) 3 * 4 * Copyright (c) 1999 Kazutaka YOKOTA <yokota@zodiac.mech.utsunomiya-u.ac.jp> 5 * All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer as 12 * the first lines of this file unmodified. 13 * 2. Redistributions in binary form must reproduce the above copyright 14 * notice, this list of conditions and the following disclaimer in the 15 * documentation and/or other materials provided with the distribution. 16 * 17 * THIS SOFTWARE IS PROVIDED BY THE AUTHORS ``AS IS'' AND ANY EXPRESS OR 18 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 19 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 20 * IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR ANY DIRECT, INDIRECT, 21 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 22 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 23 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 24 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 25 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 26 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 27 * 28 * $FreeBSD: src/sys/dev/kbd/atkbd.c,v 1.25.2.4 2002/04/08 19:21:38 asmodai Exp $ 29 */ 30 /* 31 * NOTE: All locks are handled by the kbd wrappers. 32 */ 33 34 #include "opt_kbd.h" 35 #include "opt_atkbd.h" 36 37 #include <sys/param.h> 38 #include <sys/systm.h> 39 #include <sys/kernel.h> 40 #include <sys/bus.h> 41 #include <sys/proc.h> 42 #include <sys/malloc.h> 43 #include <sys/thread2.h> 44 45 #ifdef __i386__ 46 #include <machine/md_var.h> 47 #include <machine/psl.h> 48 #include <machine/vm86.h> 49 #include <machine/pc/bios.h> 50 51 #include <vm/vm.h> 52 #include <vm/pmap.h> 53 #endif /* __i386__ */ 54 55 #include <sys/kbio.h> 56 #include "kbdreg.h" 57 #include "atkbdreg.h" 58 #include "atkbdcreg.h" 59 60 #include <bus/isa/isareg.h> 61 62 static timeout_t atkbd_timeout; 63 64 #if 0 65 static int atkbd_setmuxmode(KBDC kbdc, int value, int *mux_version); 66 #endif 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 80 args[0] = ctlr; 81 args[1] = irq; 82 error = (*sw->probe)(unit, args, flags); 83 84 if (error) 85 return error; 86 return 0; 87 } 88 89 int 90 atkbd_attach_unit(int unit, keyboard_t **kbd, int ctlr, int irq, int flags) 91 { 92 keyboard_switch_t *sw; 93 int args[2]; 94 int error; 95 96 sw = kbd_get_switch(ATKBD_DRIVER_NAME); 97 if (sw == NULL) { 98 return ENXIO; 99 } 100 101 /* reset, initialize and enable the device */ 102 args[0] = ctlr; 103 args[1] = irq; 104 *kbd = NULL; 105 error = (*sw->probe)(unit, args, flags); 106 if (error) { 107 return error; 108 } 109 error = (*sw->init)(unit, kbd, args, flags); 110 if (error) { 111 return error; 112 } 113 (*sw->enable)(*kbd); 114 115 #ifdef KBD_INSTALL_CDEV 116 /* attach a virtual keyboard cdev */ 117 error = kbd_attach(*kbd); 118 if (error) { 119 return error; 120 } 121 #endif 122 123 /* 124 * This is a kludge to compensate for lost keyboard interrupts. 125 * A similar code used to be in syscons. See below. XXX 126 */ 127 atkbd_timeout(*kbd); 128 129 if (bootverbose) 130 (*sw->diag)(*kbd, bootverbose); 131 132 return 0; 133 } 134 135 static void 136 atkbd_timeout(void *arg) 137 { 138 keyboard_t *kbd; 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 crit_enter(); 166 kbd = (keyboard_t *)arg; 167 if (kbd_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 kbd_lock(kbd, FALSE); 174 if (kbd_check_char(kbd)) 175 kbd_intr(kbd, NULL); 176 } 177 callout_reset(&kbd->kb_atkbd_timeout_ch, hz / 10, atkbd_timeout, arg); 178 crit_exit(); 179 } 180 181 /* LOW-LEVEL */ 182 183 #include <machine/limits.h> 184 #include <machine/clock.h> 185 186 #define ATKBD_DEFAULT 0 187 188 typedef struct atkbd_state { 189 KBDC kbdc; /* keyboard controller */ 190 int ks_mode; /* input mode (K_XLATE,K_RAW,K_CODE) */ 191 int ks_flags; /* flags */ 192 #define COMPOSE (1 << 0) 193 int ks_polling; 194 int ks_state; /* shift/lock key state */ 195 int ks_accents; /* accent key index (> 0) */ 196 u_int ks_composed_char; /* composed char code (> 0) */ 197 u_char ks_prefix; /* AT scan code prefix */ 198 } atkbd_state_t; 199 200 /* keyboard driver declaration */ 201 static int atkbd_configure(int flags); 202 static kbd_probe_t atkbd_probe; 203 static kbd_init_t atkbd_init; 204 static kbd_term_t atkbd_term; 205 static kbd_intr_t atkbd_intr; 206 static kbd_test_if_t atkbd_test_if; 207 static kbd_enable_t atkbd_enable; 208 static kbd_disable_t atkbd_disable; 209 static kbd_read_t atkbd_read; 210 static kbd_check_t atkbd_check; 211 static kbd_read_char_t atkbd_read_char; 212 static kbd_check_char_t atkbd_check_char; 213 static kbd_ioctl_t atkbd_ioctl; 214 static kbd_lock_t atkbd_lock; 215 static kbd_clear_state_t atkbd_clear_state; 216 static kbd_get_state_t atkbd_get_state; 217 static kbd_set_state_t atkbd_set_state; 218 static kbd_poll_mode_t atkbd_poll; 219 220 keyboard_switch_t atkbdsw = { 221 atkbd_probe, 222 atkbd_init, 223 atkbd_term, 224 atkbd_intr, 225 atkbd_test_if, 226 atkbd_enable, 227 atkbd_disable, 228 atkbd_read, 229 atkbd_check, 230 atkbd_read_char, 231 atkbd_check_char, 232 atkbd_ioctl, 233 atkbd_lock, 234 atkbd_clear_state, 235 atkbd_get_state, 236 atkbd_set_state, 237 genkbd_get_fkeystr, 238 atkbd_poll, 239 genkbd_diag, 240 }; 241 242 KEYBOARD_DRIVER(atkbd, atkbdsw, atkbd_configure); 243 244 /* local functions */ 245 static int get_typematic(keyboard_t *kbd); 246 static int setup_kbd_port(KBDC kbdc, int port, int intr); 247 static int get_kbd_echo(KBDC kbdc); 248 static int probe_keyboard(KBDC kbdc, int flags); 249 static int init_keyboard(KBDC kbdc, int *type, int flags); 250 static int write_kbd(KBDC kbdc, int command, int data); 251 static int get_kbd_id(KBDC kbdc, int cmd); 252 static int typematic(int delay, int rate); 253 static int typematic_delay(int delay); 254 static int typematic_rate(int rate); 255 256 /* local variables */ 257 258 /* the initial key map, accent map and fkey strings */ 259 #ifdef ATKBD_DFLT_KEYMAP 260 #define KBD_DFLT_KEYMAP 261 #include "atkbdmap.h" 262 #endif 263 #include "kbdtables.h" 264 265 /* structures for the default keyboard */ 266 static keyboard_t default_kbd; 267 static atkbd_state_t default_kbd_state; 268 static keymap_t default_keymap; 269 static accentmap_t default_accentmap; 270 static fkeytab_t default_fkeytab[NUM_FKEYS]; 271 272 /* 273 * The back door to the keyboard driver! 274 * This function is called by the console driver, via the kbdio module, 275 * to tickle keyboard drivers when the low-level console is being initialized. 276 * Almost nothing in the kernel has been initialied yet. Try to probe 277 * keyboards if possible. 278 * NOTE: because of the way the low-level console is initialized, this routine 279 * may be called more than once!! 280 */ 281 static int 282 atkbd_configure(int flags) 283 { 284 keyboard_t *kbd; 285 int arg[2]; 286 int i; 287 288 /* 289 * Probe the keyboard controller, if not present or if the driver 290 * is disabled, unregister the keyboard if any. 291 */ 292 if (atkbdc_configure() != 0 || 293 resource_disabled("atkbd", ATKBD_DEFAULT)) { 294 i = kbd_find_keyboard(ATKBD_DRIVER_NAME, ATKBD_DEFAULT); 295 if (i >= 0) { 296 kbd = kbd_get_keyboard(i); 297 KBD_ALWAYS_LOCK(kbd); 298 kbd_unregister(kbd); 299 kbd = NULL; /* huh? */ 300 } 301 return 0; 302 } 303 304 /* XXX: a kludge to obtain the device configuration flags */ 305 if (resource_int_value("atkbd", ATKBD_DEFAULT, "flags", &i) == 0) 306 flags |= i; 307 308 /* probe the default keyboard */ 309 arg[0] = -1; 310 arg[1] = -1; 311 kbd = NULL; 312 if (atkbd_probe(ATKBD_DEFAULT, arg, flags)) { 313 return 0; 314 } 315 if (atkbd_init(ATKBD_DEFAULT, &kbd, arg, flags)) { 316 return 0; 317 } 318 319 /* return the number of found keyboards */ 320 return 1; 321 } 322 323 /* low-level functions */ 324 325 /* detect a keyboard */ 326 static int 327 atkbd_probe(int unit, void *arg, int flags) 328 { 329 KBDC kbdc; 330 int *data = (int *)arg; /* data[0]: controller, data[1]: irq */ 331 332 333 if (unit == ATKBD_DEFAULT) { 334 if (KBD_IS_PROBED(&default_kbd)) { 335 return 0; 336 } 337 } 338 339 kbdc = atkbdc_open(data[0]); 340 if (kbdc == NULL) { 341 return ENXIO; 342 } 343 if (probe_keyboard(kbdc, flags)) { 344 if (flags & KB_CONF_FAIL_IF_NO_KBD) { 345 return ENXIO; 346 } 347 } 348 349 return 0; 350 } 351 352 /* reset and initialize the device */ 353 static int 354 atkbd_init(int unit, keyboard_t **kbdp, void *arg, int flags) 355 { 356 keyboard_t *kbd; 357 atkbd_state_t *state; 358 keymap_t *keymap; 359 accentmap_t *accmap; 360 fkeytab_t *fkeymap; 361 int fkeymap_size; 362 int delay[2]; 363 int *data = (int *)arg; /* data[0]: controller, data[1]: irq */ 364 365 /* XXX */ 366 if (unit == ATKBD_DEFAULT) { 367 *kbdp = kbd = &default_kbd; 368 if (KBD_IS_INITIALIZED(kbd) && KBD_IS_CONFIGURED(kbd)) { 369 return 0; 370 } 371 state = &default_kbd_state; 372 keymap = &default_keymap; 373 accmap = &default_accentmap; 374 fkeymap = default_fkeytab; 375 fkeymap_size = NELEM(default_fkeytab); 376 } else if (*kbdp == NULL) { 377 *kbdp = kbd = kmalloc(sizeof(*kbd), M_DEVBUF, M_WAITOK|M_ZERO); 378 state = kmalloc(sizeof(*state), M_DEVBUF, M_WAITOK|M_ZERO); 379 keymap = kmalloc(sizeof(key_map), M_DEVBUF, M_WAITOK); 380 accmap = kmalloc(sizeof(accent_map), M_DEVBUF, M_WAITOK); 381 fkeymap = kmalloc(sizeof(fkey_tab), M_DEVBUF, M_WAITOK); 382 fkeymap_size = NELEM(fkey_tab); 383 } else if (KBD_IS_INITIALIZED(*kbdp) && KBD_IS_CONFIGURED(*kbdp)) { 384 return 0; 385 } else { 386 kbd = *kbdp; 387 state = (atkbd_state_t *)kbd->kb_data; 388 bzero(state, sizeof(*state)); 389 keymap = kbd->kb_keymap; 390 accmap = kbd->kb_accentmap; 391 fkeymap = kbd->kb_fkeytab; 392 fkeymap_size = kbd->kb_fkeytab_size; 393 } 394 395 if (!KBD_IS_PROBED(kbd)) { 396 state->kbdc = atkbdc_open(data[0]); 397 if (state->kbdc == NULL) { 398 return ENXIO; 399 } 400 kbd_init_struct(kbd, ATKBD_DRIVER_NAME, KB_OTHER, unit, flags, 401 KB_PRI_ATKBD, 0, 0); 402 bcopy(&key_map, keymap, sizeof(key_map)); 403 bcopy(&accent_map, accmap, sizeof(accent_map)); 404 bcopy(fkey_tab, fkeymap, 405 imin(fkeymap_size*sizeof(fkeymap[0]), sizeof(fkey_tab))); 406 kbd_set_maps(kbd, keymap, accmap, fkeymap, fkeymap_size); 407 kbd->kb_data = (void *)state; 408 409 if (probe_keyboard(state->kbdc, flags)) { /* shouldn't happen */ 410 if (flags & KB_CONF_FAIL_IF_NO_KBD) { 411 return ENXIO; 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 return ENXIO; 430 } 431 atkbd_ioctl(kbd, KDSETLED, (caddr_t)&state->ks_state); 432 get_typematic(kbd); 433 delay[0] = kbd->kb_delay1; 434 delay[1] = kbd->kb_delay2; 435 atkbd_ioctl(kbd, KDSETREPEAT, (caddr_t)delay); 436 KBD_FOUND_DEVICE(kbd); 437 KBD_INIT_DONE(kbd); 438 } 439 if (!KBD_IS_CONFIGURED(kbd)) { 440 if (kbd_register(kbd) < 0) { 441 return ENXIO; 442 } 443 KBD_CONFIG_DONE(kbd); 444 } 445 446 return 0; 447 } 448 449 /* finish using this keyboard */ 450 static int 451 atkbd_term(keyboard_t *kbd) 452 { 453 kbd_unregister(kbd); 454 return 0; 455 } 456 457 /* keyboard interrupt routine */ 458 static int 459 atkbd_intr(keyboard_t *kbd, void *arg) 460 { 461 atkbd_state_t *state; 462 int delay[2]; 463 int c; 464 465 if (KBD_IS_ACTIVE(kbd) && KBD_IS_BUSY(kbd)) { 466 /* let the callback function to process the input */ 467 (*kbd->kb_callback.kc_func)(kbd, KBDIO_KEYINPUT, 468 kbd->kb_callback.kc_arg); 469 } else { 470 /* read and discard the input; no one is waiting for input */ 471 do { 472 c = atkbd_read_char(kbd, FALSE); 473 } while (c != NOKEY); 474 475 if (!KBD_HAS_DEVICE(kbd)) { 476 /* 477 * The keyboard was not detected before; 478 * it must have been reconnected! 479 */ 480 state = (atkbd_state_t *)kbd->kb_data; 481 init_keyboard(state->kbdc, &kbd->kb_type, 482 kbd->kb_config); 483 atkbd_ioctl(kbd, KDSETLED, (caddr_t)&state->ks_state); 484 get_typematic(kbd); 485 delay[0] = kbd->kb_delay1; 486 delay[1] = kbd->kb_delay2; 487 atkbd_ioctl(kbd, KDSETREPEAT, (caddr_t)delay); 488 KBD_FOUND_DEVICE(kbd); 489 } 490 } 491 492 return 0; 493 } 494 495 /* test the interface to the device */ 496 static int 497 atkbd_test_if(keyboard_t *kbd) 498 { 499 int error; 500 501 error = 0; 502 empty_both_buffers(((atkbd_state_t *)kbd->kb_data)->kbdc, 10); 503 crit_enter(); 504 if (!test_controller(((atkbd_state_t *)kbd->kb_data)->kbdc)) 505 error = EIO; 506 else if (test_kbd_port(((atkbd_state_t *)kbd->kb_data)->kbdc) != 0) 507 error = EIO; 508 crit_exit(); 509 510 return error; 511 } 512 513 /* 514 * Enable the access to the device; until this function is called, 515 * the client cannot read from the keyboard. 516 */ 517 static int 518 atkbd_enable(keyboard_t *kbd) 519 { 520 crit_enter(); 521 KBD_ACTIVATE(kbd); 522 crit_exit(); 523 return 0; 524 } 525 526 /* disallow the access to the device */ 527 static int 528 atkbd_disable(keyboard_t *kbd) 529 { 530 crit_enter(); 531 KBD_DEACTIVATE(kbd); 532 crit_exit(); 533 return 0; 534 } 535 536 /* read one byte from the keyboard if it's allowed */ 537 static int 538 atkbd_read(keyboard_t *kbd, int wait) 539 { 540 int c, ret; 541 542 if (wait) 543 c = read_kbd_data(((atkbd_state_t *)kbd->kb_data)->kbdc); 544 else 545 c = read_kbd_data_no_wait(((atkbd_state_t *)kbd->kb_data)->kbdc); 546 if (c != -1) 547 ++kbd->kb_count; 548 549 ret = (KBD_IS_ACTIVE(kbd) ? c : -1); 550 551 return ret; 552 } 553 554 /* check if data is waiting */ 555 static int 556 atkbd_check(keyboard_t *kbd) 557 { 558 int ret; 559 560 if (!KBD_IS_ACTIVE(kbd)) { 561 return FALSE; 562 } 563 ret = kbdc_data_ready(((atkbd_state_t *)kbd->kb_data)->kbdc); 564 565 return ret; 566 } 567 568 /* read char from the keyboard */ 569 static u_int 570 atkbd_read_char(keyboard_t *kbd, int wait) 571 { 572 atkbd_state_t *state; 573 u_int action; 574 int scancode; 575 int keycode; 576 577 state = (atkbd_state_t *)kbd->kb_data; 578 next_code: 579 /* do we have a composed char to return? */ 580 if (!(state->ks_flags & COMPOSE) && (state->ks_composed_char > 0)) { 581 action = state->ks_composed_char; 582 state->ks_composed_char = 0; 583 if (action > UCHAR_MAX) { 584 return ERRKEY; 585 } 586 return action; 587 } 588 589 /* see if there is something in the keyboard port */ 590 if (wait) { 591 do { 592 scancode = read_kbd_data(state->kbdc); 593 } while (scancode == -1); 594 } else { 595 scancode = read_kbd_data_no_wait(state->kbdc); 596 if (scancode == -1) { 597 return NOKEY; 598 } 599 } 600 ++kbd->kb_count; 601 602 #if KBDIO_DEBUG >= 10 603 kprintf("atkbd_read_char(): scancode:0x%x\n", scancode); 604 #endif 605 606 /* return the byte as is for the K_RAW mode */ 607 if (state->ks_mode == K_RAW) { 608 return scancode; 609 } 610 611 /* translate the scan code into a keycode */ 612 keycode = scancode & 0x7F; 613 switch (state->ks_prefix) { 614 case 0x00: /* normal scancode */ 615 switch(scancode) { 616 case 0xB8: /* left alt (compose key) released */ 617 if (state->ks_flags & COMPOSE) { 618 state->ks_flags &= ~COMPOSE; 619 if (state->ks_composed_char > UCHAR_MAX) 620 state->ks_composed_char = 0; 621 } 622 break; 623 case 0x38: /* left alt (compose key) pressed */ 624 if (!(state->ks_flags & COMPOSE)) { 625 state->ks_flags |= COMPOSE; 626 state->ks_composed_char = 0; 627 } 628 break; 629 case 0xE0: 630 case 0xE1: 631 state->ks_prefix = scancode; 632 goto next_code; 633 } 634 break; 635 case 0xE0: /* 0xE0 prefix */ 636 state->ks_prefix = 0; 637 switch (keycode) { 638 case 0x1C: /* right enter key */ 639 keycode = 0x59; 640 break; 641 case 0x1D: /* right ctrl key */ 642 keycode = 0x5A; 643 break; 644 case 0x35: /* keypad divide key */ 645 keycode = 0x5B; 646 break; 647 case 0x37: /* print scrn key */ 648 keycode = 0x5C; 649 break; 650 case 0x38: /* right alt key (alt gr) */ 651 keycode = 0x5D; 652 break; 653 case 0x46: /* ctrl-pause/break on AT 101 (see below) */ 654 keycode = 0x68; 655 break; 656 case 0x47: /* grey home key */ 657 keycode = 0x5E; 658 break; 659 case 0x48: /* grey up arrow key */ 660 keycode = 0x5F; 661 break; 662 case 0x49: /* grey page up key */ 663 keycode = 0x60; 664 break; 665 case 0x4B: /* grey left arrow key */ 666 keycode = 0x61; 667 break; 668 case 0x4D: /* grey right arrow key */ 669 keycode = 0x62; 670 break; 671 case 0x4F: /* grey end key */ 672 keycode = 0x63; 673 break; 674 case 0x50: /* grey down arrow key */ 675 keycode = 0x64; 676 break; 677 case 0x51: /* grey page down key */ 678 keycode = 0x65; 679 break; 680 case 0x52: /* grey insert key */ 681 keycode = 0x66; 682 break; 683 case 0x53: /* grey delete key */ 684 keycode = 0x67; 685 break; 686 /* the following 3 are only used on the MS "Natural" keyboard */ 687 case 0x5b: /* left Window key */ 688 keycode = 0x69; 689 break; 690 case 0x5c: /* right Window key */ 691 keycode = 0x6a; 692 break; 693 case 0x5d: /* menu key */ 694 keycode = 0x6b; 695 break; 696 default: /* ignore everything else */ 697 goto next_code; 698 } 699 break; 700 case 0xE1: /* 0xE1 prefix */ 701 /* 702 * The pause/break key on the 101 keyboard produces: 703 * E1-1D-45 E1-9D-C5 704 * Ctrl-pause/break produces: 705 * E0-46 E0-C6 (See above.) 706 */ 707 state->ks_prefix = 0; 708 if (keycode == 0x1D) 709 state->ks_prefix = 0x1D; 710 goto next_code; 711 /* NOT REACHED */ 712 case 0x1D: /* pause / break */ 713 state->ks_prefix = 0; 714 if (keycode != 0x45) 715 goto next_code; 716 keycode = 0x68; 717 break; 718 } 719 720 if (kbd->kb_type == KB_84) { 721 switch (keycode) { 722 case 0x37: /* *(numpad)/print screen */ 723 if (state->ks_flags & SHIFTS) 724 keycode = 0x5c; /* print screen */ 725 break; 726 case 0x45: /* num lock/pause */ 727 if (state->ks_flags & CTLS) 728 keycode = 0x68; /* pause */ 729 break; 730 case 0x46: /* scroll lock/break */ 731 if (state->ks_flags & CTLS) 732 keycode = 0x6c; /* break */ 733 break; 734 } 735 } else if (kbd->kb_type == KB_101) { 736 switch (keycode) { 737 case 0x5c: /* print screen */ 738 if (state->ks_flags & ALTS) 739 keycode = 0x54; /* sysrq */ 740 break; 741 case 0x68: /* pause/break */ 742 if (state->ks_flags & CTLS) 743 keycode = 0x6c; /* break */ 744 break; 745 } 746 } 747 748 /* return the key code in the K_CODE mode */ 749 if (state->ks_mode == K_CODE) { 750 return (keycode | (scancode & 0x80)); 751 } 752 753 /* compose a character code */ 754 if (state->ks_flags & COMPOSE) { 755 switch (keycode | (scancode & 0x80)) { 756 /* key pressed, process it */ 757 case 0x47: case 0x48: case 0x49: /* keypad 7,8,9 */ 758 state->ks_composed_char *= 10; 759 state->ks_composed_char += keycode - 0x40; 760 if (state->ks_composed_char > UCHAR_MAX) 761 return ERRKEY; 762 goto next_code; 763 case 0x4B: case 0x4C: case 0x4D: /* keypad 4,5,6 */ 764 state->ks_composed_char *= 10; 765 state->ks_composed_char += keycode - 0x47; 766 if (state->ks_composed_char > UCHAR_MAX) 767 return ERRKEY; 768 goto next_code; 769 case 0x4F: case 0x50: case 0x51: /* keypad 1,2,3 */ 770 state->ks_composed_char *= 10; 771 state->ks_composed_char += keycode - 0x4E; 772 if (state->ks_composed_char > UCHAR_MAX) 773 return ERRKEY; 774 goto next_code; 775 case 0x52: /* keypad 0 */ 776 state->ks_composed_char *= 10; 777 if (state->ks_composed_char > UCHAR_MAX) 778 return ERRKEY; 779 goto next_code; 780 781 /* key released, no interest here */ 782 case 0xC7: case 0xC8: case 0xC9: /* keypad 7,8,9 */ 783 case 0xCB: case 0xCC: case 0xCD: /* keypad 4,5,6 */ 784 case 0xCF: case 0xD0: case 0xD1: /* keypad 1,2,3 */ 785 case 0xD2: /* keypad 0 */ 786 goto next_code; 787 788 case 0x38: /* left alt key */ 789 break; 790 791 default: 792 if (state->ks_composed_char > 0) { 793 state->ks_flags &= ~COMPOSE; 794 state->ks_composed_char = 0; 795 return ERRKEY; 796 } 797 break; 798 } 799 } 800 801 /* keycode to key action */ 802 action = genkbd_keyaction(kbd, keycode, scancode & 0x80, 803 &state->ks_state, &state->ks_accents); 804 if (action == NOKEY) { 805 goto next_code; 806 } else { 807 return action; 808 } 809 } 810 811 /* check if char is waiting */ 812 static int 813 atkbd_check_char(keyboard_t *kbd) 814 { 815 atkbd_state_t *state; 816 int ret; 817 818 if (!KBD_IS_ACTIVE(kbd)) { 819 return FALSE; 820 } 821 state = (atkbd_state_t *)kbd->kb_data; 822 if (!(state->ks_flags & COMPOSE) && (state->ks_composed_char > 0)) { 823 return TRUE; 824 } 825 ret = kbdc_data_ready(state->kbdc); 826 return ret; 827 } 828 829 /* some useful control functions */ 830 static int 831 atkbd_ioctl(keyboard_t *kbd, u_long cmd, caddr_t arg) 832 { 833 /* trasnlate LED_XXX bits into the device specific bits */ 834 static u_char ledmap[8] = { 835 0, 4, 2, 6, 1, 5, 3, 7, 836 }; 837 atkbd_state_t *state = kbd->kb_data; 838 int error; 839 int i; 840 841 crit_enter(); 842 843 switch (cmd) { 844 845 case KDGKBMODE: /* get keyboard mode */ 846 *(int *)arg = state->ks_mode; 847 break; 848 case KDSKBMODE: /* set keyboard mode */ 849 switch (*(int *)arg) { 850 case K_XLATE: 851 if (state->ks_mode != K_XLATE) { 852 /* make lock key state and LED state match */ 853 state->ks_state &= ~LOCK_MASK; 854 state->ks_state |= KBD_LED_VAL(kbd); 855 } 856 /* FALL THROUGH */ 857 case K_RAW: 858 case K_CODE: 859 if (state->ks_mode != *(int *)arg) { 860 atkbd_clear_state(kbd); 861 state->ks_mode = *(int *)arg; 862 } 863 break; 864 default: 865 crit_exit(); 866 return EINVAL; 867 } 868 break; 869 870 case KDGETLED: /* get keyboard LED */ 871 *(int *)arg = KBD_LED_VAL(kbd); 872 break; 873 case KDSETLED: /* set keyboard LED */ 874 /* NOTE: lock key state in ks_state won't be changed */ 875 if (*(int *)arg & ~LOCK_MASK) { 876 crit_exit(); 877 return EINVAL; 878 } 879 i = *(int *)arg; 880 /* replace CAPS LED with ALTGR LED for ALTGR keyboards */ 881 if (state->ks_mode == K_XLATE && 882 kbd->kb_keymap->n_keys > ALTGR_OFFSET) { 883 if (i & ALKED) 884 i |= CLKED; 885 else 886 i &= ~CLKED; 887 } 888 if (KBD_HAS_DEVICE(kbd)) { 889 error = write_kbd(state->kbdc, KBDC_SET_LEDS, 890 ledmap[i & LED_MASK]); 891 if (error) { 892 crit_exit(); 893 return error; 894 } 895 } 896 KBD_LED_VAL(kbd) = *(int *)arg; 897 break; 898 899 case KDGKBSTATE: /* get lock key state */ 900 *(int *)arg = state->ks_state & LOCK_MASK; 901 break; 902 case KDSKBSTATE: /* set lock key state */ 903 if (*(int *)arg & ~LOCK_MASK) { 904 crit_exit(); 905 return EINVAL; 906 } 907 state->ks_state &= ~LOCK_MASK; 908 state->ks_state |= *(int *)arg; 909 crit_exit(); 910 /* set LEDs and quit */ 911 return atkbd_ioctl(kbd, KDSETLED, arg); 912 913 case KDSETREPEAT: /* set keyboard repeat rate (new interface) */ 914 crit_exit(); 915 if (!KBD_HAS_DEVICE(kbd)) { 916 return 0; 917 } 918 i = typematic(((int *)arg)[0], ((int *)arg)[1]); 919 error = write_kbd(state->kbdc, KBDC_SET_TYPEMATIC, i); 920 if (error == 0) { 921 kbd->kb_delay1 = typematic_delay(i); 922 kbd->kb_delay2 = typematic_rate(i); 923 } 924 return error; 925 926 case KDSETRAD: /* set keyboard repeat rate (old interface) */ 927 crit_exit(); 928 if (!KBD_HAS_DEVICE(kbd)) { 929 return 0; 930 } 931 error = write_kbd(state->kbdc, KBDC_SET_TYPEMATIC, *(int *)arg); 932 if (error == 0) { 933 kbd->kb_delay1 = typematic_delay(*(int *)arg); 934 kbd->kb_delay2 = typematic_rate(*(int *)arg); 935 } 936 return error; 937 938 case PIO_KEYMAP: /* set keyboard translation table */ 939 case PIO_KEYMAPENT: /* set keyboard translation table entry */ 940 case PIO_DEADKEYMAP: /* set accent key translation table */ 941 state->ks_accents = 0; 942 /* FALL THROUGH */ 943 default: 944 crit_exit(); 945 return genkbd_commonioctl(kbd, cmd, arg); 946 } 947 948 crit_exit(); 949 return 0; 950 } 951 952 /* lock the access to the keyboard */ 953 static int 954 atkbd_lock(keyboard_t *kbd, int lock) 955 { 956 return kbdc_lock(((atkbd_state_t *)kbd->kb_data)->kbdc, lock); 957 } 958 959 /* clear the internal state of the keyboard */ 960 static void 961 atkbd_clear_state(keyboard_t *kbd) 962 { 963 atkbd_state_t *state; 964 965 state = (atkbd_state_t *)kbd->kb_data; 966 state->ks_flags = 0; 967 state->ks_polling = 0; 968 state->ks_state &= LOCK_MASK; /* preserve locking key state */ 969 state->ks_accents = 0; 970 state->ks_composed_char = 0; 971 #if 0 972 state->ks_prefix = 0; /* XXX */ 973 #endif 974 } 975 976 /* save the internal state */ 977 static int 978 atkbd_get_state(keyboard_t *kbd, void *buf, size_t len) 979 { 980 if (len == 0) 981 return sizeof(atkbd_state_t); 982 if (len < sizeof(atkbd_state_t)) 983 return -1; 984 985 bcopy(kbd->kb_data, buf, sizeof(atkbd_state_t)); 986 return 0; 987 } 988 989 /* set the internal state */ 990 static int 991 atkbd_set_state(keyboard_t *kbd, void *buf, size_t len) 992 { 993 if (len < sizeof(atkbd_state_t)) 994 return ENOMEM; 995 if (((atkbd_state_t *)kbd->kb_data)->kbdc 996 != ((atkbd_state_t *)buf)->kbdc) 997 return ENOMEM; 998 bcopy(buf, kbd->kb_data, sizeof(atkbd_state_t)); 999 return 0; 1000 } 1001 1002 static int 1003 atkbd_poll(keyboard_t *kbd, int on) 1004 { 1005 atkbd_state_t *state; 1006 1007 state = (atkbd_state_t *)kbd->kb_data; 1008 crit_enter(); 1009 if (on) 1010 state->ks_polling = 1; 1011 else 1012 state->ks_polling = 0; 1013 crit_exit(); 1014 return 0; 1015 } 1016 1017 /* local functions */ 1018 1019 static int 1020 get_typematic(keyboard_t *kbd) 1021 { 1022 #ifdef __i386__ 1023 /* 1024 * Only some systems allow us to retrieve the keyboard repeat 1025 * rate previously set via the BIOS... 1026 */ 1027 struct vm86frame vmf; 1028 u_int32_t p; 1029 1030 bzero(&vmf, sizeof(vmf)); 1031 vmf.vmf_ax = 0xc000; 1032 vm86_intcall(0x15, &vmf); 1033 if ((vmf.vmf_eflags & PSL_C) || vmf.vmf_ah) 1034 return ENODEV; 1035 p = BIOS_PADDRTOVADDR(((u_int32_t)vmf.vmf_es << 4) + vmf.vmf_bx); 1036 if ((readb(p + 6) & 0x40) == 0) /* int 16, function 0x09 supported? */ 1037 return ENODEV; 1038 vmf.vmf_ax = 0x0900; 1039 vm86_intcall(0x16, &vmf); 1040 if ((vmf.vmf_al & 0x08) == 0) /* int 16, function 0x0306 supported? */ 1041 return ENODEV; 1042 vmf.vmf_ax = 0x0306; 1043 vm86_intcall(0x16, &vmf); 1044 kbd->kb_delay1 = typematic_delay(vmf.vmf_bh << 5); 1045 kbd->kb_delay2 = typematic_rate(vmf.vmf_bl); 1046 return 0; 1047 #else 1048 return ENODEV; 1049 #endif /* __i386__ */ 1050 } 1051 1052 static int 1053 setup_kbd_port(KBDC kbdc, int port, int intr) 1054 { 1055 if (!set_controller_command_byte(kbdc, 1056 KBD_KBD_CONTROL_BITS, 1057 ((port) ? KBD_ENABLE_KBD_PORT : KBD_DISABLE_KBD_PORT) | 1058 ((intr) ? KBD_ENABLE_KBD_INT : KBD_DISABLE_KBD_INT))) 1059 return 1; 1060 return 0; 1061 } 1062 1063 static int 1064 get_kbd_echo(KBDC kbdc) 1065 { 1066 /* enable the keyboard port, but disable the keyboard intr. */ 1067 if (setup_kbd_port(kbdc, TRUE, FALSE)) 1068 /* CONTROLLER ERROR: there is very little we can do... */ 1069 return ENXIO; 1070 1071 /* see if something is present */ 1072 write_kbd_command(kbdc, KBDC_ECHO); 1073 if (read_kbd_data(kbdc) != KBD_ECHO) { 1074 empty_both_buffers(kbdc, 10); 1075 test_controller(kbdc); 1076 test_kbd_port(kbdc); 1077 return ENXIO; 1078 } 1079 1080 /* enable the keyboard port and intr. */ 1081 if (setup_kbd_port(kbdc, TRUE, TRUE)) { 1082 /* 1083 * CONTROLLER ERROR 1084 * This is serious; the keyboard intr is left disabled! 1085 */ 1086 return ENXIO; 1087 } 1088 1089 return 0; 1090 } 1091 1092 static int 1093 probe_keyboard(KBDC kbdc, int flags) 1094 { 1095 /* 1096 * Don't try to print anything in this function. The low-level 1097 * console may not have been initialized yet... 1098 */ 1099 int err; 1100 int c; 1101 1102 if (!kbdc_lock(kbdc, TRUE)) { 1103 /* driver error? */ 1104 return ENXIO; 1105 } 1106 1107 /* 1108 * XXX block data transmission from the keyboard. This can cause 1109 * the keyboard to stop sending keystrokes even when re-enabled 1110 * under certain circumstances if not followed by a full reset. 1111 */ 1112 write_controller_command(kbdc, KBDC_DISABLE_KBD_PORT); 1113 1114 /* flush any noise in the buffer */ 1115 empty_both_buffers(kbdc, 100); 1116 1117 /* save the current keyboard controller command byte */ 1118 c = get_controller_command_byte(kbdc); 1119 if (c == -1) { 1120 /* CONTROLLER ERROR */ 1121 kbdc_lock(kbdc, FALSE); 1122 return ENXIO; 1123 } 1124 1125 /* 1126 * The keyboard may have been screwed up by the boot block. 1127 * We may just be able to recover from error by testing the controller 1128 * and the keyboard port. The controller command byte needs to be 1129 * saved before this recovery operation, as some controllers seem 1130 * to set the command byte to particular values. 1131 */ 1132 test_controller(kbdc); 1133 test_kbd_port(kbdc); 1134 1135 err = get_kbd_echo(kbdc); 1136 1137 /* 1138 * Even if the keyboard doesn't seem to be present (err != 0), 1139 * we shall enable the keyboard port and interrupt so that 1140 * the driver will be operable when the keyboard is attached 1141 * to the system later. It is NOT recommended to hot-plug 1142 * the AT keyboard, but many people do so... 1143 */ 1144 setup_kbd_port(kbdc, TRUE, TRUE); 1145 #if 0 1146 if (err) { 1147 /* try to restore the command byte as before */ 1148 set_controller_command_byte(kbdc, KBD_KBD_CONTROL_BITS, c); 1149 } 1150 #endif 1151 1152 kbdc_lock(kbdc, FALSE); 1153 return err; 1154 } 1155 1156 static int 1157 init_keyboard(KBDC kbdc, int *type, int flags) 1158 { 1159 int codeset; 1160 int id; 1161 int c; 1162 int mux_version; 1163 int mux_mask; 1164 int mux_val; 1165 1166 if (!kbdc_lock(kbdc, TRUE)) { 1167 /* driver error? */ 1168 return EIO; 1169 } 1170 1171 /* 1172 * XXX block data transmission from the keyboard. This can cause 1173 * the keyboard to stop sending keystrokes even when re-enabled 1174 * under certain circumstances if not followed by a full reset. 1175 */ 1176 write_controller_command(kbdc, KBDC_DISABLE_KBD_PORT); 1177 1178 #if 0 1179 if (atkbd_setmuxmode(kbdc, 1, &mux_version)) { 1180 kprintf("atkbd: no mux\n"); 1181 mux_version = -1; 1182 } else { 1183 kprintf("atkbd: mux present version %d\n", mux_version); 1184 } 1185 #else 1186 mux_version = -1; 1187 #endif 1188 1189 /* save the current controller command byte */ 1190 empty_both_buffers(kbdc, 200); 1191 c = get_controller_command_byte(kbdc); 1192 if (c == -1) { 1193 /* CONTROLLER ERROR */ 1194 kbdc_lock(kbdc, FALSE); 1195 kprintf("atkbd: unable to get the current command byte value.\n"); 1196 return EIO; 1197 } 1198 if (bootverbose) 1199 kprintf("atkbd: the current kbd controller command byte %04x\n", 1200 c); 1201 #if 0 1202 /* override the keyboard lock switch */ 1203 c |= KBD_OVERRIDE_KBD_LOCK; 1204 #endif 1205 1206 /* enable the keyboard port, but disable the keyboard intr. */ 1207 if (setup_kbd_port(kbdc, TRUE, FALSE)) { 1208 /* CONTROLLER ERROR: there is very little we can do... */ 1209 kprintf("atkbd: unable to set the command byte.\n"); 1210 kbdc_lock(kbdc, FALSE); 1211 return EIO; 1212 } 1213 1214 /* default codeset */ 1215 codeset = -1; 1216 1217 /* reset keyboard hardware */ 1218 if (!(flags & KB_CONF_NO_RESET) && !reset_kbd(kbdc)) { 1219 /* 1220 * KEYBOARD ERROR 1221 * Keyboard reset may fail either because the keyboard 1222 * doen't exist, or because the keyboard doesn't pass 1223 * the self-test, or the keyboard controller on the 1224 * motherboard and the keyboard somehow fail to shake hands. 1225 * It is just possible, particularly in the last case, 1226 * that the keyoard controller may be left in a hung state. 1227 * test_controller() and test_kbd_port() appear to bring 1228 * the keyboard controller back (I don't know why and how, 1229 * though.) 1230 */ 1231 empty_both_buffers(kbdc, 10); 1232 test_controller(kbdc); 1233 test_kbd_port(kbdc); 1234 /* 1235 * We could disable the keyboard port and interrupt... but, 1236 * the keyboard may still exist (see above). 1237 */ 1238 set_controller_command_byte(kbdc, KBD_KBD_CONTROL_BITS, c); 1239 kbdc_lock(kbdc, FALSE); 1240 if (bootverbose) 1241 kprintf("atkbd: failed to reset the keyboard.\n"); 1242 return EIO; 1243 } 1244 1245 /* 1246 * Check if we have an XT keyboard before we attempt to reset it. 1247 * The procedure assumes that the keyboard and the controller have 1248 * been set up properly by BIOS and have not been messed up 1249 * during the boot process. 1250 */ 1251 codeset = -1; 1252 if (flags & KB_CONF_ALT_SCANCODESET) 1253 /* the user says there is a XT keyboard */ 1254 codeset = 1; 1255 #ifdef KBD_DETECT_XT_KEYBOARD 1256 else if ((c & KBD_TRANSLATION) == 0) { 1257 /* SET_SCANCODE_SET is not always supported; ignore error */ 1258 if (send_kbd_command_and_data(kbdc, KBDC_SET_SCANCODE_SET, 0) 1259 == KBD_ACK) 1260 codeset = read_kbd_data(kbdc); 1261 } 1262 #endif /* KBD_DETECT_XT_KEYBOARD */ 1263 if (bootverbose) 1264 kprintf("atkbd: scancode set %d\n", codeset); 1265 1266 /* 1267 * Get the keyboard id. 1268 */ 1269 *type = KB_OTHER; 1270 id = get_kbd_id(kbdc, ATKBD_CMD_GETID); 1271 switch(id) { 1272 case 0x41ab: /* 101/102/... Enhanced */ 1273 case 0x83ab: /* ditto */ 1274 case 0x54ab: /* SpaceSaver */ 1275 case 0x84ab: /* ditto */ 1276 #if 0 1277 case 0x90ab: /* 'G' */ 1278 case 0x91ab: /* 'P' */ 1279 case 0x92ab: /* 'A' */ 1280 #endif 1281 *type = KB_101; 1282 break; 1283 case -1: /* AT 84 keyboard doesn't return ID */ 1284 *type = KB_84; 1285 break; 1286 default: 1287 break; 1288 } 1289 if (bootverbose) 1290 kprintf("atkbd: keyboard ID 0x%x (%d)\n", id, *type); 1291 1292 /* 1293 * Allow us to set the XT_KEYBD flag in UserConfig so that keyboards 1294 * such as those on the IBM ThinkPad laptop computers can be used 1295 * with the standard console driver. 1296 */ 1297 if (codeset == 1) { 1298 if (send_kbd_command_and_data(kbdc, 1299 KBDC_SET_SCANCODE_SET, codeset) == KBD_ACK) { 1300 /* XT kbd doesn't need scan code translation */ 1301 c &= ~KBD_TRANSLATION; 1302 } else { 1303 /* 1304 * KEYBOARD ERROR 1305 * The XT kbd isn't usable unless the proper scan 1306 * code set is selected. 1307 */ 1308 set_controller_command_byte(kbdc, 1309 KBD_KBD_CONTROL_BITS, c); 1310 kbdc_lock(kbdc, FALSE); 1311 kprintf("atkbd: unable to set the XT keyboard mode.\n"); 1312 return EIO; 1313 } 1314 } 1315 1316 #if 0 1317 if (send_kbd_command_and_data(kbdc, ATKBD_CMD_EX_ENABLE, 0x71) != KBD_ACK) 1318 kprintf("atkbd: can't CMD_EX_ENABLE\n"); 1319 1320 if (send_kbd_command(kbdc, ATKBD_CMD_SETALL_MB) != KBD_ACK) 1321 kprintf("atkbd: can't SETALL_MB\n"); 1322 if (send_kbd_command(kbdc, ATKBD_CMD_SETALL_MBR) != KBD_ACK) 1323 kprintf("atkbd: can't SETALL_MBR\n"); 1324 #endif 1325 #if 0 1326 if (send_kbd_command_and_data(kbdc, ATKBD_CMD_SSCANSET, 2) != KBD_ACK) 1327 kprintf("atkbd: can't SSCANSET\n"); 1328 if (send_kbd_command_and_data(kbdc, ATKBD_CMD_GSCANSET, 0) != KBD_ACK) 1329 kprintf("atkbd: can't SSCANSET\n"); 1330 else 1331 kprintf("atkbd: scanset %d\n", read_kbd_data(kbdc)); 1332 #endif 1333 #if 0 1334 kprintf("atkbd: id %04x\n", get_kbd_id(kbdc, ATKBD_CMD_OK_GETID)); 1335 if (send_kbd_command_and_data(kbdc, ATKBD_CMD_SETLEDS, 0) != KBD_ACK) 1336 kprintf("atkbd: setleds failed\n"); 1337 if (send_kbd_command_and_data(kbdc, ATKBD_CMD_SETREP, 255) != KBD_ACK) 1338 kprintf("atkbd: setrep failed\n"); 1339 if (send_kbd_command(kbdc, ATKBD_CMD_RESEND) != KBD_ACK) 1340 kprintf("atkbd: resend failed\n"); 1341 #endif 1342 /* 1343 * Some keyboards require a SETLEDS command to be sent after 1344 * the reset command before they will send keystrokes to us 1345 * (Acer C720). 1346 */ 1347 if (send_kbd_command_and_data(kbdc, ATKBD_CMD_SETLEDS, 0) != KBD_ACK) 1348 kprintf("atkbd: setleds failed\n"); 1349 send_kbd_command(kbdc, ATKBD_CMD_ENABLE); 1350 1351 #if 0 1352 /* DEBUGGING */ 1353 { 1354 int retry; 1355 int c; 1356 kprintf("atkbd: waiting for keypress"); 1357 for (retry = 0; retry < 10; ++retry) { 1358 c = read_kbd_data_no_wait(kbdc); 1359 kprintf(" %d", c); 1360 tsleep(&c, 0, "wait", hz); 1361 } 1362 kprintf("\n"); 1363 } 1364 #endif 1365 1366 if (mux_version == -1) { 1367 mux_mask = 0; 1368 mux_val = 0; 1369 } else { 1370 mux_mask = KBD_AUX_CONTROL_BITS; 1371 mux_val = 0; 1372 kprintf("atkbd: setaux for multiplexer\n"); 1373 } 1374 1375 /* enable the keyboard port and intr. */ 1376 if (!set_controller_command_byte(kbdc, 1377 KBD_KBD_CONTROL_BITS | KBD_TRANSLATION | 1378 KBD_OVERRIDE_KBD_LOCK | mux_mask, 1379 (c & (KBD_TRANSLATION | KBD_OVERRIDE_KBD_LOCK)) 1380 | KBD_ENABLE_KBD_PORT | KBD_ENABLE_KBD_INT | mux_val)) { 1381 /* 1382 * CONTROLLER ERROR 1383 * This is serious; we are left with the disabled 1384 * keyboard intr. 1385 */ 1386 set_controller_command_byte(kbdc, 1387 KBD_KBD_CONTROL_BITS | KBD_TRANSLATION | 1388 KBD_OVERRIDE_KBD_LOCK | mux_mask, 1389 c); 1390 kbdc_lock(kbdc, FALSE); 1391 kprintf("atkbd: unable to enable the keyboard port and intr.\n"); 1392 return EIO; 1393 } 1394 1395 kbdc_lock(kbdc, FALSE); 1396 return 0; 1397 } 1398 1399 #if 0 1400 1401 static 1402 int 1403 atkbd_setmuxmode(KBDC kbdc, int enable, int *mux_version) 1404 { 1405 int param; 1406 int val; 1407 int i; 1408 1409 kbdc->mux_active = 0; 1410 empty_both_buffers(kbdc, 100); 1411 val = 0xf0; 1412 if ((param = write_controller_w1r1(kbdc, KBDC_AUX_LOOP, val)) != val) { 1413 kprintf("setmuxmode: fail1\n"); 1414 return(-1); 1415 } 1416 val = enable ? 0x56 : 0xf6; 1417 if ((param = write_controller_w1r1(kbdc, KBDC_AUX_LOOP, val)) != val) { 1418 kprintf("setmuxmode: fail2\n"); 1419 return(-1); 1420 } 1421 val = enable ? 0xa4 : 0xa5; 1422 if ((param = write_controller_w1r1(kbdc, KBDC_AUX_LOOP, val)) != val) { 1423 kprintf("setmuxmode: fail3\n"); 1424 return(-1); 1425 } 1426 kprintf("mux version %02x\n", param); 1427 if (param == 0xac) { 1428 kprintf("setmuxmode: fail4\n"); 1429 return(-1); 1430 } 1431 1432 if (enable) { 1433 for (i = 0; i < KBD_NUM_MUX_PORTS; ++i) { 1434 write_controller_command(kbdc, KBDC_MUX_PFX + i); 1435 write_controller_command(kbdc, KBDC_ENABLE_AUX_PORT); 1436 1437 } 1438 } 1439 kbdc->mux_active = 1; 1440 if (mux_version) 1441 *mux_version = param; 1442 return 0; 1443 } 1444 1445 #endif 1446 1447 static int 1448 write_kbd(KBDC kbdc, int command, int data) 1449 { 1450 /* prevent the timeout routine from polling the keyboard */ 1451 if (!kbdc_lock(kbdc, TRUE)) 1452 return EBUSY; 1453 1454 /* disable the keyboard and mouse interrupt */ 1455 crit_enter(); 1456 1457 #if 0 1458 /* 1459 * XXX NOTE: We can't just disable the KBD port any more, even 1460 * temporarily, without blowing up some BIOS emulations 1461 * if not followed by a full reset. 1462 */ 1463 c = get_controller_command_byte(kbdc); 1464 if ((c == -1) || 1465 !set_controller_command_byte(kbdc, 1466 KBD_KBD_CONTROL_BITS, 1467 KBD_DISABLE_KBD_PORT | KBD_DISABLE_KBD_INT)) { 1468 /* CONTROLLER ERROR */ 1469 kbdc_lock(kbdc, FALSE); 1470 crit_exit(); 1471 return EIO; 1472 } 1473 /* 1474 * Now that the keyboard controller is told not to generate 1475 * the keyboard and mouse interrupts, call `splx()' to allow 1476 * the other tty interrupts. The clock interrupt may also occur, 1477 * but the timeout routine (`scrn_timer()') will be blocked 1478 * by the lock flag set via `kbdc_lock()' 1479 */ 1480 crit_exit(); 1481 #endif 1482 1483 if (send_kbd_command_and_data(kbdc, command, data) != KBD_ACK) 1484 send_kbd_command(kbdc, KBDC_ENABLE_KBD); 1485 1486 #if 0 1487 /* restore the interrupts */ 1488 if (!set_controller_command_byte(kbdc, KBD_KBD_CONTROL_BITS, c)) { 1489 /* CONTROLLER ERROR */ 1490 } 1491 #else 1492 crit_exit(); 1493 #endif 1494 kbdc_lock(kbdc, FALSE); 1495 1496 return 0; 1497 } 1498 1499 static int 1500 get_kbd_id(KBDC kbdc, int cmd) 1501 { 1502 int id1, id2; 1503 1504 empty_both_buffers(kbdc, 10); 1505 id1 = id2 = -1; 1506 if (send_kbd_command(kbdc, cmd) != KBD_ACK) 1507 return -1; 1508 1509 DELAY(10000); /* 10 msec delay */ 1510 id1 = read_kbd_data(kbdc); 1511 if (id1 != -1) 1512 id2 = read_kbd_data(kbdc); 1513 1514 if ((id1 == -1) || (id2 == -1)) { 1515 empty_both_buffers(kbdc, 10); 1516 test_controller(kbdc); 1517 test_kbd_port(kbdc); 1518 return -1; 1519 } 1520 return ((id2 << 8) | id1); 1521 } 1522 1523 static int delays[] = { 250, 500, 750, 1000 }; 1524 static int rates[] = { 34, 38, 42, 46, 50, 55, 59, 63, 1525 68, 76, 84, 92, 100, 110, 118, 126, 1526 136, 152, 168, 184, 200, 220, 236, 252, 1527 272, 304, 336, 368, 400, 440, 472, 504 }; 1528 1529 static int 1530 typematic_delay(int i) 1531 { 1532 return delays[(i >> 5) & 3]; 1533 } 1534 1535 static int 1536 typematic_rate(int i) 1537 { 1538 return rates[i & 0x1f]; 1539 } 1540 1541 static int 1542 typematic(int delay, int rate) 1543 { 1544 int value; 1545 int i; 1546 1547 for (i = NELEM(delays) - 1; i > 0; --i) { 1548 if (delay >= delays[i]) 1549 break; 1550 } 1551 value = i << 5; 1552 for (i = NELEM(rates) - 1; i > 0; --i) { 1553 if (rate >= rates[i]) 1554 break; 1555 } 1556 value |= i; 1557 return value; 1558 } 1559