sys/dev/misc/kbd/atkbd.c

   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 #include <sys/kbio.h>
  46 #include "kbdreg.h"
  47 #include "atkbdreg.h"
  48 #include "atkbdcreg.h"
  49
  50 #include <bus/isa/isareg.h>
  51
  52 static timeout_t        atkbd_timeout;
  53
  54 #if 0
  55 static int atkbd_setmuxmode(KBDC kbdc, int value, int *mux_version);
  56 #endif
  57
  58 int
  59 atkbd_probe_unit(int unit, int ctlr, int irq, int flags)
  60 {
  61         keyboard_switch_t *sw;
  62         int args[2];
  63         int error;
  64
  65         sw = kbd_get_switch(ATKBD_DRIVER_NAME);
  66         if (sw == NULL) {
  67                 return ENXIO;
  68         }
  69
  70         args[0] = ctlr;
  71         args[1] = irq;
  72         error = (*sw->probe)(unit, args, flags);
  73
  74         if (error)
  75                 return error;
  76         return 0;
  77 }
  78
  79 int
  80 atkbd_attach_unit(int unit, keyboard_t **kbd, int ctlr, int irq, int flags)
  81 {
  82         keyboard_switch_t *sw;
  83         int args[2];
  84         int error;
  85
  86         sw = kbd_get_switch(ATKBD_DRIVER_NAME);
  87         if (sw == NULL) {
  88                 return ENXIO;
  89         }
  90
  91         /* reset, initialize and enable the device */
  92         args[0] = ctlr;
  93         args[1] = irq;
  94         *kbd = NULL;
  95         error = (*sw->probe)(unit, args, flags);
  96         if (error) {
  97                 return error;
  98         }
  99         error = (*sw->init)(unit, kbd, args, flags);
 100         if (error) {
 101                 return error;
 102         }
 103         (*sw->enable)(*kbd);
 104
 105 #ifdef KBD_INSTALL_CDEV
 106         /* attach a virtual keyboard cdev */
 107         error = kbd_attach(*kbd);
 108         if (error) {
 109                 return error;
 110         }
 111 #endif
 112
 113         /*
 114          * This is a kludge to compensate for lost keyboard interrupts.
 115          * A similar code used to be in syscons. See below. XXX
 116          */
 117         atkbd_timeout(*kbd);
 118
 119         if (bootverbose)
 120                 (*sw->diag)(*kbd, bootverbose);
 121
 122         return 0;
 123 }
 124
 125 static void
 126 atkbd_timeout(void *arg)
 127 {
 128         keyboard_t *kbd;
 129
 130         /*
 131          * The original text of the following comments are extracted
 132          * from syscons.c (1.287)
 133          *
 134          * With release 2.1 of the Xaccel server, the keyboard is left
 135          * hanging pretty often. Apparently an interrupt from the
 136          * keyboard is lost, and I don't know why (yet).
 137          * This ugly hack calls the low-level interrupt routine if input
 138          * is ready for the keyboard and conveniently hides the problem. XXX
 139          *
 140          * Try removing anything stuck in the keyboard controller; whether
 141          * it's a keyboard scan code or mouse data. The low-level
 142          * interrupt routine doesn't read the mouse data directly,
 143          * but the keyboard controller driver will, as a side effect.
 144          */
 145         /*
 146          * And here is bde's original comment about this:
 147          *
 148          * This is necessary to handle edge triggered interrupts - if we
 149          * returned when our IRQ is high due to unserviced input, then there
 150          * would be no more keyboard IRQs until the keyboard is reset by
 151          * external powers.
 152          *
 153          * The keyboard apparently unwedges the irq in most cases.
 154          */
 155         crit_enter();
 156         kbd = (keyboard_t *)arg;
 157         if (kbd_lock(kbd, TRUE)) {
 158                 /*
 159                  * We have seen the lock flag is not set. Let's reset
 160                  * the flag early, otherwise the LED update routine fails
 161                  * which may want the lock during the interrupt routine.
 162                  */
 163                 kbd_lock(kbd, FALSE);
 164                 if (kbd_check_char(kbd))
 165                         kbd_intr(kbd, NULL);
 166         }
 167         callout_reset(&kbd->kb_atkbd_timeout_ch, hz / 10, atkbd_timeout, arg);
 168         crit_exit();
 169 }
 170
 171 /* LOW-LEVEL */
 172
 173 #include <machine/limits.h>
 174 #include <machine/clock.h>
 175
 176 #define ATKBD_DEFAULT   0
 177
 178 typedef struct atkbd_state {
 179         KBDC            kbdc;           /* keyboard controller */
 180         int             ks_mode;        /* input mode (K_XLATE,K_RAW,K_CODE) */
 181         int             ks_flags;       /* flags */
 182 #define COMPOSE         (1 << 0)
 183         int             ks_polling;
 184         int             ks_state;       /* shift/lock key state */
 185         int             ks_accents;     /* accent key index (> 0) */
 186         u_int           ks_composed_char; /* composed char code (> 0) */
 187         u_char          ks_prefix;      /* AT scan code prefix */
 188 } atkbd_state_t;
 189
 190 /* keyboard driver declaration */
 191 static int              atkbd_configure(int flags);
 192 static kbd_probe_t      atkbd_probe;
 193 static kbd_init_t       atkbd_init;
 194 static kbd_term_t       atkbd_term;
 195 static kbd_intr_t       atkbd_intr;
 196 static kbd_test_if_t    atkbd_test_if;
 197 static kbd_enable_t     atkbd_enable;
 198 static kbd_disable_t    atkbd_disable;
 199 static kbd_read_t       atkbd_read;
 200 static kbd_check_t      atkbd_check;
 201 static kbd_read_char_t  atkbd_read_char;
 202 static kbd_check_char_t atkbd_check_char;
 203 static kbd_ioctl_t      atkbd_ioctl;
 204 static kbd_lock_t       atkbd_lock;
 205 static kbd_clear_state_t atkbd_clear_state;
 206 static kbd_get_state_t  atkbd_get_state;
 207 static kbd_set_state_t  atkbd_set_state;
 208 static kbd_poll_mode_t  atkbd_poll;
 209
 210 keyboard_switch_t atkbdsw = {
 211         atkbd_probe,
 212         atkbd_init,
 213         atkbd_term,
 214         atkbd_intr,
 215         atkbd_test_if,
 216         atkbd_enable,
 217         atkbd_disable,
 218         atkbd_read,
 219         atkbd_check,
 220         atkbd_read_char,
 221         atkbd_check_char,
 222         atkbd_ioctl,
 223         atkbd_lock,
 224         atkbd_clear_state,
 225         atkbd_get_state,
 226         atkbd_set_state,
 227         genkbd_get_fkeystr,
 228         atkbd_poll,
 229         genkbd_diag,
 230 };
 231
 232 KEYBOARD_DRIVER(atkbd, atkbdsw, atkbd_configure);
 233
 234 /* local functions */
 235 static int              get_typematic(keyboard_t *kbd);
 236 static int              setup_kbd_port(KBDC kbdc, int port, int intr);
 237 static int              get_kbd_echo(KBDC kbdc);
 238 static int              probe_keyboard(KBDC kbdc, int flags);
 239 static int              init_keyboard(KBDC kbdc, int *type, int flags);
 240 static int              write_kbd(KBDC kbdc, int command, int data);
 241 static int              get_kbd_id(KBDC kbdc, int cmd);
 242 static int              typematic(int delay, int rate);
 243 static int              typematic_delay(int delay);
 244 static int              typematic_rate(int rate);
 245
 246 /* local variables */
 247
 248 /* the initial key map, accent map and fkey strings */
 249 #ifdef ATKBD_DFLT_KEYMAP
 250 #define KBD_DFLT_KEYMAP
 251 #include "atkbdmap.h"
 252 #endif
 253 #include "kbdtables.h"
 254
 255 /* structures for the default keyboard */
 256 static keyboard_t       default_kbd;
 257 static atkbd_state_t    default_kbd_state;
 258 static keymap_t         default_keymap;
 259 static accentmap_t      default_accentmap;
 260 static fkeytab_t        default_fkeytab[NUM_FKEYS];
 261
 262 /*
 263  * The back door to the keyboard driver!
 264  * This function is called by the console driver, via the kbdio module,
 265  * to tickle keyboard drivers when the low-level console is being initialized.
 266  * Almost nothing in the kernel has been initialied yet.  Try to probe
 267  * keyboards if possible.
 268  * NOTE: because of the way the low-level console is initialized, this routine
 269  * may be called more than once!!
 270  */
 271 static int
 272 atkbd_configure(int flags)
 273 {
 274         keyboard_t *kbd;
 275         int arg[2];
 276         int i;
 277
 278         /*
 279          * Probe the keyboard controller, if not present or if the driver
 280          * is disabled, unregister the keyboard if any.
 281          */
 282         if (atkbdc_configure() != 0 ||
 283             resource_disabled("atkbd", ATKBD_DEFAULT)) {
 284                 i = kbd_find_keyboard(ATKBD_DRIVER_NAME, ATKBD_DEFAULT);
 285                 if (i >= 0) {
 286                         kbd = kbd_get_keyboard(i);
 287                         KBD_ALWAYS_LOCK(kbd);
 288                         kbd_unregister(kbd);
 289                         kbd = NULL; /* huh? */
 290                 }
 291                 return 0;
 292         }
 293
 294         /* XXX: a kludge to obtain the device configuration flags */
 295         if (resource_int_value("atkbd", ATKBD_DEFAULT, "flags", &i) == 0)
 296                 flags |= i;
 297
 298         /* probe the default keyboard */
 299         arg[0] = -1;
 300         arg[1] = -1;
 301         kbd = NULL;
 302         if (atkbd_probe(ATKBD_DEFAULT, arg, flags)) {
 303                 return 0;
 304         }
 305         if (atkbd_init(ATKBD_DEFAULT, &kbd, arg, flags)) {
 306                 return 0;
 307         }
 308
 309         /* return the number of found keyboards */
 310         return 1;
 311 }
 312
 313 /* low-level functions */
 314
 315 /* detect a keyboard */
 316 static int
 317 atkbd_probe(int unit, void *arg, int flags)
 318 {
 319         KBDC kbdc;
 320         int *data = (int *)arg; /* data[0]: controller, data[1]: irq */
 321
 322
 323         if (unit == ATKBD_DEFAULT) {
 324                 if (KBD_IS_PROBED(&default_kbd)) {
 325                         return 0;
 326                 }
 327         }
 328
 329         kbdc = atkbdc_open(data[0]);
 330         if (kbdc == NULL) {
 331                 return ENXIO;
 332         }
 333         if (probe_keyboard(kbdc, flags)) {
 334                 if (flags & KB_CONF_FAIL_IF_NO_KBD) {
 335                         return ENXIO;
 336                 }
 337         }
 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
 355         /* XXX */
 356         if (unit == ATKBD_DEFAULT) {
 357                 *kbdp = kbd = &default_kbd;
 358                 if (KBD_IS_INITIALIZED(kbd) && KBD_IS_CONFIGURED(kbd)) {
 359                         return 0;
 360                 }
 361                 state = &default_kbd_state;
 362                 keymap = &default_keymap;
 363                 accmap = &default_accentmap;
 364                 fkeymap = default_fkeytab;
 365                 fkeymap_size = NELEM(default_fkeytab);
 366         } else if (*kbdp == NULL) {
 367                 *kbdp = kbd = kmalloc(sizeof(*kbd), M_DEVBUF, M_WAITOK|M_ZERO);
 368                 state = kmalloc(sizeof(*state), M_DEVBUF, M_WAITOK|M_ZERO);
 369                 keymap = kmalloc(sizeof(key_map), M_DEVBUF, M_WAITOK);
 370                 accmap = kmalloc(sizeof(accent_map), M_DEVBUF, M_WAITOK);
 371                 fkeymap = kmalloc(sizeof(fkey_tab), M_DEVBUF, M_WAITOK);
 372                 fkeymap_size = NELEM(fkey_tab);
 373         } else if (KBD_IS_INITIALIZED(*kbdp) && KBD_IS_CONFIGURED(*kbdp)) {
 374                 return 0;
 375         } else {
 376                 kbd = *kbdp;
 377                 state = (atkbd_state_t *)kbd->kb_data;
 378                 bzero(state, sizeof(*state));
 379                 keymap = kbd->kb_keymap;
 380                 accmap = kbd->kb_accentmap;
 381                 fkeymap = kbd->kb_fkeytab;
 382                 fkeymap_size = kbd->kb_fkeytab_size;
 383         }
 384
 385         if (!KBD_IS_PROBED(kbd)) {
 386                 state->kbdc = atkbdc_open(data[0]);
 387                 if (state->kbdc == NULL) {
 388                         return ENXIO;
 389                 }
 390                 kbd_init_struct(kbd, ATKBD_DRIVER_NAME, KB_OTHER, unit, flags,
 391                                 KB_PRI_ATKBD, 0, 0);
 392                 bcopy(&key_map, keymap, sizeof(key_map));
 393                 bcopy(&accent_map, accmap, sizeof(accent_map));
 394                 bcopy(fkey_tab, fkeymap,
 395                       imin(fkeymap_size*sizeof(fkeymap[0]), sizeof(fkey_tab)));
 396                 kbd_set_maps(kbd, keymap, accmap, fkeymap, fkeymap_size);
 397                 kbd->kb_data = (void *)state;
 398
 399                 if (probe_keyboard(state->kbdc, flags)) { /* shouldn't happen */
 400                         if (flags & KB_CONF_FAIL_IF_NO_KBD) {
 401                                 return ENXIO;
 402                         }
 403                 } else {
 404                         KBD_FOUND_DEVICE(kbd);
 405                 }
 406                 atkbd_clear_state(kbd);
 407                 state->ks_mode = K_XLATE;
 408                 /*
 409                  * FIXME: set the initial value for lock keys in ks_state
 410                  * according to the BIOS data?
 411                  */
 412                 KBD_PROBE_DONE(kbd);
 413         }
 414         if (!KBD_IS_INITIALIZED(kbd) && !(flags & KB_CONF_PROBE_ONLY)) {
 415                 kbd->kb_config = flags & ~KB_CONF_PROBE_ONLY;
 416                 if (!KBD_HAS_DEVICE(kbd)
 417                     && init_keyboard(state->kbdc, &kbd->kb_type, kbd->kb_config)
 418                     && (kbd->kb_config & KB_CONF_FAIL_IF_NO_KBD)) {
 419                         return ENXIO;
 420                 }
 421                 atkbd_ioctl(kbd, KDSETLED, (caddr_t)&state->ks_state);
 422                 get_typematic(kbd);
 423                 delay[0] = kbd->kb_delay1;
 424                 delay[1] = kbd->kb_delay2;
 425                 atkbd_ioctl(kbd, KDSETREPEAT, (caddr_t)delay);
 426                 KBD_FOUND_DEVICE(kbd);
 427                 KBD_INIT_DONE(kbd);
 428         }
 429         if (!KBD_IS_CONFIGURED(kbd)) {
 430                 if (kbd_register(kbd) < 0) {
 431                         return ENXIO;
 432                 }
 433                 KBD_CONFIG_DONE(kbd);
 434         }
 435
 436         return 0;
 437 }
 438
 439 /* finish using this keyboard */
 440 static int
 441 atkbd_term(keyboard_t *kbd)
 442 {
 443         kbd_unregister(kbd);
 444         return 0;
 445 }
 446
 447 /* keyboard interrupt routine */
 448 static int
 449 atkbd_intr(keyboard_t *kbd, void *arg)
 450 {
 451         atkbd_state_t *state;
 452         int delay[2];
 453         int c;
 454
 455         if (KBD_IS_ACTIVE(kbd) && KBD_IS_BUSY(kbd)) {
 456                 /* let the callback function to process the input */
 457                 (*kbd->kb_callback.kc_func)(kbd, KBDIO_KEYINPUT,
 458                                             kbd->kb_callback.kc_arg);
 459         } else {
 460                 /* read and discard the input; no one is waiting for input */
 461                 do {
 462                         c = atkbd_read_char(kbd, FALSE);
 463                 } while (c != NOKEY);
 464
 465                 if (!KBD_HAS_DEVICE(kbd)) {
 466                         /*
 467                          * The keyboard was not detected before;
 468                          * it must have been reconnected!
 469                          */
 470                         state = (atkbd_state_t *)kbd->kb_data;
 471                         init_keyboard(state->kbdc, &kbd->kb_type,
 472                                       kbd->kb_config);
 473                         atkbd_ioctl(kbd, KDSETLED, (caddr_t)&state->ks_state);
 474                         get_typematic(kbd);
 475                         delay[0] = kbd->kb_delay1;
 476                         delay[1] = kbd->kb_delay2;
 477                         atkbd_ioctl(kbd, KDSETREPEAT, (caddr_t)delay);
 478                         KBD_FOUND_DEVICE(kbd);
 479                 }
 480         }
 481
 482         return 0;
 483 }
 484
 485 /* test the interface to the device */
 486 static int
 487 atkbd_test_if(keyboard_t *kbd)
 488 {
 489         int error;
 490
 491         error = 0;
 492         empty_both_buffers(((atkbd_state_t *)kbd->kb_data)->kbdc, 10);
 493         crit_enter();
 494         if (!test_controller(((atkbd_state_t *)kbd->kb_data)->kbdc))
 495                 error = EIO;
 496         else if (test_kbd_port(((atkbd_state_t *)kbd->kb_data)->kbdc) != 0)
 497                 error = EIO;
 498         crit_exit();
 499
 500         return error;
 501 }
 502
 503 /*
 504  * Enable the access to the device; until this function is called,
 505  * the client cannot read from the keyboard.
 506  */
 507 static int
 508 atkbd_enable(keyboard_t *kbd)
 509 {
 510         crit_enter();
 511         KBD_ACTIVATE(kbd);
 512         crit_exit();
 513         return 0;
 514 }
 515
 516 /* disallow the access to the device */
 517 static int
 518 atkbd_disable(keyboard_t *kbd)
 519 {
 520         crit_enter();
 521         KBD_DEACTIVATE(kbd);
 522         crit_exit();
 523         return 0;
 524 }
 525
 526 /* read one byte from the keyboard if it's allowed */
 527 static int
 528 atkbd_read(keyboard_t *kbd, int wait)
 529 {
 530         int c, ret;
 531
 532         if (wait)
 533                 c = read_kbd_data(((atkbd_state_t *)kbd->kb_data)->kbdc);
 534         else
 535                 c = read_kbd_data_no_wait(((atkbd_state_t *)kbd->kb_data)->kbdc);
 536         if (c != -1)
 537                 ++kbd->kb_count;
 538
 539         ret = (KBD_IS_ACTIVE(kbd) ? c : -1);
 540
 541         return ret;
 542 }
 543
 544 /* check if data is waiting */
 545 static int
 546 atkbd_check(keyboard_t *kbd)
 547 {
 548         int ret;
 549
 550         if (!KBD_IS_ACTIVE(kbd)) {
 551                 return FALSE;
 552         }
 553         ret = kbdc_data_ready(((atkbd_state_t *)kbd->kb_data)->kbdc);
 554
 555         return ret;
 556 }
 557
 558 /* read char from the keyboard */
 559 static u_int
 560 atkbd_read_char(keyboard_t *kbd, int wait)
 561 {
 562         atkbd_state_t *state;
 563         u_int action;
 564         int scancode;
 565         int keycode;
 566
 567         state = (atkbd_state_t *)kbd->kb_data;
 568 next_code:
 569         /* do we have a composed char to return? */
 570         if (!(state->ks_flags & COMPOSE) && (state->ks_composed_char > 0)) {
 571                 action = state->ks_composed_char;
 572                 state->ks_composed_char = 0;
 573                 if (action > UCHAR_MAX) {
 574                         return ERRKEY;
 575                 }
 576                 return action;
 577         }
 578
 579         /* see if there is something in the keyboard port */
 580         if (wait) {
 581                 do {
 582                         scancode = read_kbd_data(state->kbdc);
 583                 } while (scancode == -1);
 584         } else {
 585                 scancode = read_kbd_data_no_wait(state->kbdc);
 586                 if (scancode == -1) {
 587                         return NOKEY;
 588                 }
 589         }
 590         ++kbd->kb_count;
 591
 592 #if KBDIO_DEBUG >= 10
 593         kprintf("atkbd_read_char(): scancode:0x%x\n", scancode);
 594 #endif
 595
 596         /* return the byte as is for the K_RAW mode */
 597         if (state->ks_mode == K_RAW) {
 598                 return scancode;
 599         }
 600
 601         /* translate the scan code into a keycode */
 602         keycode = scancode & 0x7F;
 603         switch (state->ks_prefix) {
 604         case 0x00:      /* normal scancode */
 605                 switch(scancode) {
 606                 case 0xB8:      /* left alt (compose key) released */
 607                         if (state->ks_flags & COMPOSE) {
 608                                 state->ks_flags &= ~COMPOSE;
 609                                 if (state->ks_composed_char > UCHAR_MAX)
 610                                         state->ks_composed_char = 0;
 611                         }
 612                         break;
 613                 case 0x38:      /* left alt (compose key) pressed */
 614                         if (!(state->ks_flags & COMPOSE)) {
 615                                 state->ks_flags |= COMPOSE;
 616                                 state->ks_composed_char = 0;
 617                         }
 618                         break;
 619                 case 0xE0:
 620                 case 0xE1:
 621                         state->ks_prefix = scancode;
 622                         goto next_code;
 623                 }
 624                 break;
 625         case 0xE0:      /* 0xE0 prefix */
 626                 state->ks_prefix = 0;
 627                 switch (keycode) {
 628                 case 0x1C:      /* right enter key */
 629                         keycode = 0x59;
 630                         break;
 631                 case 0x1D:      /* right ctrl key */
 632                         keycode = 0x5A;
 633                         break;
 634                 case 0x35:      /* keypad divide key */
 635                         keycode = 0x5B;
 636                         break;
 637                 case 0x37:      /* print scrn key */
 638                         keycode = 0x5C;
 639                         break;
 640                 case 0x38:      /* right alt key (alt gr) */
 641                         keycode = 0x5D;
 642                         break;
 643                 case 0x46:      /* ctrl-pause/break on AT 101 (see below) */
 644                         keycode = 0x68;
 645                         break;
 646                 case 0x47:      /* grey home key */
 647                         keycode = 0x5E;
 648                         break;
 649                 case 0x48:      /* grey up arrow key */
 650                         keycode = 0x5F;
 651                         break;
 652                 case 0x49:      /* grey page up key */
 653                         keycode = 0x60;
 654                         break;
 655                 case 0x4B:      /* grey left arrow key */
 656                         keycode = 0x61;
 657                         break;
 658                 case 0x4D:      /* grey right arrow key */
 659                         keycode = 0x62;
 660                         break;
 661                 case 0x4F:      /* grey end key */
 662                         keycode = 0x63;
 663                         break;
 664                 case 0x50:      /* grey down arrow key */
 665                         keycode = 0x64;
 666                         break;
 667                 case 0x51:      /* grey page down key */
 668                         keycode = 0x65;
 669                         break;
 670                 case 0x52:      /* grey insert key */
 671                         keycode = 0x66;
 672                         break;
 673                 case 0x53:      /* grey delete key */
 674                         keycode = 0x67;
 675                         break;
 676                 /* the following 3 are only used on the MS "Natural" keyboard */
 677                 case 0x5b:      /* left Window key */
 678                         keycode = 0x69;
 679                         break;
 680                 case 0x5c:      /* right Window key */
 681                         keycode = 0x6a;
 682                         break;
 683                 case 0x5d:      /* menu key */
 684                         keycode = 0x6b;
 685                         break;
 686                 default:        /* ignore everything else */
 687                         goto next_code;
 688                 }
 689                 break;
 690         case 0xE1:      /* 0xE1 prefix */
 691                 /*
 692                  * The pause/break key on the 101 keyboard produces:
 693                  * E1-1D-45 E1-9D-C5
 694                  * Ctrl-pause/break produces:
 695                  * E0-46 E0-C6 (See above.)
 696                  */
 697                 state->ks_prefix = 0;
 698                 if (keycode == 0x1D)
 699                         state->ks_prefix = 0x1D;
 700                 goto next_code;
 701                 /* NOT REACHED */
 702         case 0x1D:      /* pause / break */
 703                 state->ks_prefix = 0;
 704                 if (keycode != 0x45)
 705                         goto next_code;
 706                 keycode = 0x68;
 707                 break;
 708         }
 709
 710         if (kbd->kb_type == KB_84) {
 711                 switch (keycode) {
 712                 case 0x37:      /* *(numpad)/print screen */
 713                         if (state->ks_flags & SHIFTS)
 714                                 keycode = 0x5c; /* print screen */
 715                         break;
 716                 case 0x45:      /* num lock/pause */
 717                         if (state->ks_flags & CTLS)
 718                                 keycode = 0x68; /* pause */
 719                         break;
 720                 case 0x46:      /* scroll lock/break */
 721                         if (state->ks_flags & CTLS)
 722                                 keycode = 0x6c; /* break */
 723                         break;
 724                 }
 725         } else if (kbd->kb_type == KB_101) {
 726                 switch (keycode) {
 727                 case 0x5c:      /* print screen */
 728                         if (state->ks_flags & ALTS)
 729                                 keycode = 0x54; /* sysrq */
 730                         break;
 731                 case 0x68:      /* pause/break */
 732                         if (state->ks_flags & CTLS)
 733                                 keycode = 0x6c; /* break */
 734                         break;
 735                 }
 736         }
 737
 738         /* return the key code in the K_CODE mode */
 739         if (state->ks_mode == K_CODE) {
 740                 return (keycode | (scancode & 0x80));
 741         }
 742
 743         /* compose a character code */
 744         if (state->ks_flags & COMPOSE) {
 745                 switch (keycode | (scancode & 0x80)) {
 746                 /* key pressed, process it */
 747                 case 0x47: case 0x48: case 0x49:        /* keypad 7,8,9 */
 748                         state->ks_composed_char *= 10;
 749                         state->ks_composed_char += keycode - 0x40;
 750                         if (state->ks_composed_char > UCHAR_MAX)
 751                                 return ERRKEY;
 752                         goto next_code;
 753                 case 0x4B: case 0x4C: case 0x4D:        /* keypad 4,5,6 */
 754                         state->ks_composed_char *= 10;
 755                         state->ks_composed_char += keycode - 0x47;
 756                         if (state->ks_composed_char > UCHAR_MAX)
 757                                 return ERRKEY;
 758                         goto next_code;
 759                 case 0x4F: case 0x50: case 0x51:        /* keypad 1,2,3 */
 760                         state->ks_composed_char *= 10;
 761                         state->ks_composed_char += keycode - 0x4E;
 762                         if (state->ks_composed_char > UCHAR_MAX)
 763                                 return ERRKEY;
 764                         goto next_code;
 765                 case 0x52:                              /* keypad 0 */
 766                         state->ks_composed_char *= 10;
 767                         if (state->ks_composed_char > UCHAR_MAX)
 768                                 return ERRKEY;
 769                         goto next_code;
 770
 771                 /* key released, no interest here */
 772                 case 0xC7: case 0xC8: case 0xC9:        /* keypad 7,8,9 */
 773                 case 0xCB: case 0xCC: case 0xCD:        /* keypad 4,5,6 */
 774                 case 0xCF: case 0xD0: case 0xD1:        /* keypad 1,2,3 */
 775                 case 0xD2:                              /* keypad 0 */
 776                         goto next_code;
 777
 778                 case 0x38:                              /* left alt key */
 779                         break;
 780
 781                 default:
 782                         if (state->ks_composed_char > 0) {
 783                                 state->ks_flags &= ~COMPOSE;
 784                                 state->ks_composed_char = 0;
 785                                 return ERRKEY;
 786                         }
 787                         break;
 788                 }
 789         }
 790
 791         /* keycode to key action */
 792         action = genkbd_keyaction(kbd, keycode, scancode & 0x80,
 793                                   &state->ks_state, &state->ks_accents);
 794         if (action == NOKEY) {
 795                 goto next_code;
 796         } else {
 797                 return action;
 798         }
 799 }
 800
 801 /* check if char is waiting */
 802 static int
 803 atkbd_check_char(keyboard_t *kbd)
 804 {
 805         atkbd_state_t *state;
 806         int ret;
 807
 808         if (!KBD_IS_ACTIVE(kbd)) {
 809                 return FALSE;
 810         }
 811         state = (atkbd_state_t *)kbd->kb_data;
 812         if (!(state->ks_flags & COMPOSE) && (state->ks_composed_char > 0)) {
 813                 return TRUE;
 814         }
 815         ret = kbdc_data_ready(state->kbdc);
 816         return ret;
 817 }
 818
 819 /* some useful control functions */
 820 static int
 821 atkbd_ioctl(keyboard_t *kbd, u_long cmd, caddr_t arg)
 822 {
 823         /* trasnlate LED_XXX bits into the device specific bits */
 824         static u_char ledmap[8] = {
 825                 0, 4, 2, 6, 1, 5, 3, 7,
 826         };
 827         atkbd_state_t *state = kbd->kb_data;
 828         int error;
 829         int i;
 830
 831         crit_enter();
 832
 833         switch (cmd) {
 834
 835         case KDGKBMODE:         /* get keyboard mode */
 836                 *(int *)arg = state->ks_mode;
 837                 break;
 838         case KDSKBMODE:         /* set keyboard mode */
 839                 switch (*(int *)arg) {
 840                 case K_XLATE:
 841                         if (state->ks_mode != K_XLATE) {
 842                                 /* make lock key state and LED state match */
 843                                 state->ks_state &= ~LOCK_MASK;
 844                                 state->ks_state |= KBD_LED_VAL(kbd);
 845                         }
 846                         /* FALL THROUGH */
 847                 case K_RAW:
 848                 case K_CODE:
 849                         if (state->ks_mode != *(int *)arg) {
 850                                 atkbd_clear_state(kbd);
 851                                 state->ks_mode = *(int *)arg;
 852                         }
 853                         break;
 854                 default:
 855                         crit_exit();
 856                         return EINVAL;
 857                 }
 858                 break;
 859
 860         case KDGETLED:          /* get keyboard LED */
 861                 *(int *)arg = KBD_LED_VAL(kbd);
 862                 break;
 863         case KDSETLED:          /* set keyboard LED */
 864                 /* NOTE: lock key state in ks_state won't be changed */
 865                 if (*(int *)arg & ~LOCK_MASK) {
 866                         crit_exit();
 867                         return EINVAL;
 868                 }
 869                 i = *(int *)arg;
 870                 /* replace CAPS LED with ALTGR LED for ALTGR keyboards */
 871                 if (state->ks_mode == K_XLATE &&
 872                     kbd->kb_keymap->n_keys > ALTGR_OFFSET) {
 873                         if (i & ALKED)
 874                                 i |= CLKED;
 875                         else
 876                                 i &= ~CLKED;
 877                 }
 878                 if (KBD_HAS_DEVICE(kbd)) {
 879                         error = write_kbd(state->kbdc, KBDC_SET_LEDS,
 880                                           ledmap[i & LED_MASK]);
 881                         if (error) {
 882                                 crit_exit();
 883                                 return error;
 884                         }
 885                 }
 886                 KBD_LED_VAL(kbd) = *(int *)arg;
 887                 break;
 888
 889         case KDGKBSTATE:        /* get lock key state */
 890                 *(int *)arg = state->ks_state & LOCK_MASK;
 891                 break;
 892         case KDSKBSTATE:        /* set lock key state */
 893                 if (*(int *)arg & ~LOCK_MASK) {
 894                         crit_exit();
 895                         return EINVAL;
 896                 }
 897                 state->ks_state &= ~LOCK_MASK;
 898                 state->ks_state |= *(int *)arg;
 899                 crit_exit();
 900                 /* set LEDs and quit */
 901                 return atkbd_ioctl(kbd, KDSETLED, arg);
 902
 903         case KDSETREPEAT:       /* set keyboard repeat rate (new interface) */
 904                 crit_exit();
 905                 if (!KBD_HAS_DEVICE(kbd)) {
 906                         return 0;
 907                 }
 908                 i = typematic(((int *)arg)[0], ((int *)arg)[1]);
 909                 error = write_kbd(state->kbdc, KBDC_SET_TYPEMATIC, i);
 910                 if (error == 0) {
 911                         kbd->kb_delay1 = typematic_delay(i);
 912                         kbd->kb_delay2 = typematic_rate(i);
 913                 }
 914                 return error;
 915
 916         case PIO_KEYMAP:        /* set keyboard translation table */
 917         case PIO_KEYMAPENT:     /* set keyboard translation table entry */
 918         case PIO_DEADKEYMAP:    /* set accent key translation table */
 919                 state->ks_accents = 0;
 920                 /* FALL THROUGH */
 921         default:
 922                 crit_exit();
 923                 return genkbd_commonioctl(kbd, cmd, arg);
 924         }
 925
 926         crit_exit();
 927         return 0;
 928 }
 929
 930 /* lock the access to the keyboard */
 931 static int
 932 atkbd_lock(keyboard_t *kbd, int lock)
 933 {
 934         return kbdc_lock(((atkbd_state_t *)kbd->kb_data)->kbdc, lock);
 935 }
 936
 937 /* clear the internal state of the keyboard */
 938 static void
 939 atkbd_clear_state(keyboard_t *kbd)
 940 {
 941         atkbd_state_t *state;
 942
 943         state = (atkbd_state_t *)kbd->kb_data;
 944         state->ks_flags = 0;
 945         state->ks_polling = 0;
 946         state->ks_state &= LOCK_MASK;   /* preserve locking key state */
 947         state->ks_accents = 0;
 948         state->ks_composed_char = 0;
 949 #if 0
 950         state->ks_prefix = 0; /* XXX */
 951 #endif
 952 }
 953
 954 /* save the internal state */
 955 static int
 956 atkbd_get_state(keyboard_t *kbd, void *buf, size_t len)
 957 {
 958         if (len == 0)
 959                 return sizeof(atkbd_state_t);
 960         if (len < sizeof(atkbd_state_t))
 961                 return -1;
 962
 963         bcopy(kbd->kb_data, buf, sizeof(atkbd_state_t));
 964         return 0;
 965 }
 966
 967 /* set the internal state */
 968 static int
 969 atkbd_set_state(keyboard_t *kbd, void *buf, size_t len)
 970 {
 971         if (len < sizeof(atkbd_state_t))
 972                 return ENOMEM;
 973         if (((atkbd_state_t *)kbd->kb_data)->kbdc
 974                 != ((atkbd_state_t *)buf)->kbdc)
 975                 return ENOMEM;
 976         bcopy(buf, kbd->kb_data, sizeof(atkbd_state_t));
 977         return 0;
 978 }
 979
 980 static int
 981 atkbd_poll(keyboard_t *kbd, int on)
 982 {
 983         atkbd_state_t *state;
 984
 985         state = (atkbd_state_t *)kbd->kb_data;
 986         crit_enter();
 987         if (on)
 988                 state->ks_polling = 1;
 989         else
 990                 state->ks_polling = 0;
 991         crit_exit();
 992         return 0;
 993 }
 994
 995 /* local functions */
 996
 997 static int
 998 get_typematic(keyboard_t *kbd)
 999 {
1000         return ENODEV;
1001 }
1002
1003 static int
1004 setup_kbd_port(KBDC kbdc, int port, int intr)
1005 {
1006         if (!set_controller_command_byte(kbdc,
1007                 KBD_KBD_CONTROL_BITS,
1008                 ((port) ? KBD_ENABLE_KBD_PORT : KBD_DISABLE_KBD_PORT) |
1009                 ((intr) ? KBD_ENABLE_KBD_INT : KBD_DISABLE_KBD_INT)))
1010                 return 1;
1011         return 0;
1012 }
1013
1014 static int
1015 get_kbd_echo(KBDC kbdc)
1016 {
1017         /* enable the keyboard port, but disable the keyboard intr. */
1018         if (setup_kbd_port(kbdc, TRUE, FALSE))
1019                 /* CONTROLLER ERROR: there is very little we can do... */
1020                 return ENXIO;
1021
1022         /* see if something is present */
1023         write_kbd_command(kbdc, KBDC_ECHO);
1024         if (read_kbd_data(kbdc) != KBD_ECHO) {
1025                 empty_both_buffers(kbdc, 10);
1026                 test_controller(kbdc);
1027                 test_kbd_port(kbdc);
1028                 return ENXIO;
1029         }
1030
1031         /* enable the keyboard port and intr. */
1032         if (setup_kbd_port(kbdc, TRUE, TRUE)) {
1033                 /*
1034                  * CONTROLLER ERROR
1035                  * This is serious; the keyboard intr is left disabled!
1036                  */
1037                 return ENXIO;
1038         }
1039
1040         return 0;
1041 }
1042
1043 static int
1044 probe_keyboard(KBDC kbdc, int flags)
1045 {
1046         /*
1047          * Don't try to print anything in this function.  The low-level
1048          * console may not have been initialized yet...
1049          */
1050         int err;
1051         int c;
1052
1053         if (!kbdc_lock(kbdc, TRUE)) {
1054                 /* driver error? */
1055                 return ENXIO;
1056         }
1057
1058         /*
1059          * XXX block data transmission from the keyboard.  This can cause
1060          * the keyboard to stop sending keystrokes even when re-enabled
1061          * under certain circumstances if not followed by a full reset.
1062          */
1063         write_controller_command(kbdc, KBDC_DISABLE_KBD_PORT);
1064
1065         /* flush any noise in the buffer */
1066         empty_both_buffers(kbdc, 100);
1067
1068         /* save the current keyboard controller command byte */
1069         c = get_controller_command_byte(kbdc);
1070         if (c == -1) {
1071                 /* CONTROLLER ERROR */
1072                 kbdc_lock(kbdc, FALSE);
1073                 return ENXIO;
1074         }
1075
1076         /*
1077          * The keyboard may have been screwed up by the boot block.
1078          * We may just be able to recover from error by testing the controller
1079          * and the keyboard port. The controller command byte needs to be
1080          * saved before this recovery operation, as some controllers seem
1081          * to set the command byte to particular values.
1082          */
1083         test_controller(kbdc);
1084         test_kbd_port(kbdc);
1085
1086         err = get_kbd_echo(kbdc);
1087
1088         /*
1089          * Even if the keyboard doesn't seem to be present (err != 0),
1090          * we shall enable the keyboard port and interrupt so that
1091          * the driver will be operable when the keyboard is attached
1092          * to the system later.  It is NOT recommended to hot-plug
1093          * the AT keyboard, but many people do so...
1094          */
1095         setup_kbd_port(kbdc, TRUE, TRUE);
1096 #if 0
1097         if (err) {
1098                 /* try to restore the command byte as before */
1099                 set_controller_command_byte(kbdc, KBD_KBD_CONTROL_BITS, c);
1100         }
1101 #endif
1102
1103         kbdc_lock(kbdc, FALSE);
1104         return err;
1105 }
1106
1107 static int
1108 init_keyboard(KBDC kbdc, int *type, int flags)
1109 {
1110         int codeset;
1111         int id;
1112         int c;
1113         int mux_version;
1114         int mux_mask;
1115         int mux_val;
1116
1117         if (!kbdc_lock(kbdc, TRUE)) {
1118                 /* driver error? */
1119                 return EIO;
1120         }
1121
1122         /*
1123          * XXX block data transmission from the keyboard.  This can cause
1124          * the keyboard to stop sending keystrokes even when re-enabled
1125          * under certain circumstances if not followed by a full reset.
1126          */
1127         write_controller_command(kbdc, KBDC_DISABLE_KBD_PORT);
1128
1129 #if 0
1130         if (atkbd_setmuxmode(kbdc, 1, &mux_version)) {
1131                 kprintf("atkbd: no mux\n");
1132                 mux_version = -1;
1133         } else {
1134                 kprintf("atkbd: mux present version %d\n", mux_version);
1135         }
1136 #else
1137         mux_version = -1;
1138 #endif
1139
1140         /* save the current controller command byte */
1141         empty_both_buffers(kbdc, 200);
1142         c = get_controller_command_byte(kbdc);
1143         if (c == -1) {
1144                 /* CONTROLLER ERROR */
1145                 kbdc_lock(kbdc, FALSE);
1146                 kprintf("atkbd: unable to get the current command byte value.\n");
1147                 return EIO;
1148         }
1149         if (bootverbose)
1150                 kprintf("atkbd: the current kbd controller command byte %04x\n",
1151                        c);
1152 #if 0
1153         /* override the keyboard lock switch */
1154         c |= KBD_OVERRIDE_KBD_LOCK;
1155 #endif
1156
1157         /* enable the keyboard port, but disable the keyboard intr. */
1158         if (setup_kbd_port(kbdc, TRUE, FALSE)) {
1159                 /* CONTROLLER ERROR: there is very little we can do... */
1160                 kprintf("atkbd: unable to set the command byte.\n");
1161                 kbdc_lock(kbdc, FALSE);
1162                 return EIO;
1163         }
1164
1165         /* default codeset */
1166         codeset = -1;
1167
1168         /* reset keyboard hardware */
1169         if (!(flags & KB_CONF_NO_RESET) && !reset_kbd(kbdc)) {
1170                 /*
1171                  * KEYBOARD ERROR
1172                  * Keyboard reset may fail either because the keyboard
1173                  * doen't exist, or because the keyboard doesn't pass
1174                  * the self-test, or the keyboard controller on the
1175                  * motherboard and the keyboard somehow fail to shake hands.
1176                  * It is just possible, particularly in the last case,
1177                  * that the keyoard controller may be left in a hung state.
1178                  * test_controller() and test_kbd_port() appear to bring
1179                  * the keyboard controller back (I don't know why and how,
1180                  * though.)
1181                  */
1182                 empty_both_buffers(kbdc, 10);
1183                 test_controller(kbdc);
1184                 test_kbd_port(kbdc);
1185                 /*
1186                  * We could disable the keyboard port and interrupt... but,
1187                  * the keyboard may still exist (see above).
1188                  */
1189                 set_controller_command_byte(kbdc, KBD_KBD_CONTROL_BITS, c);
1190                 kbdc_lock(kbdc, FALSE);
1191                 if (bootverbose)
1192                         kprintf("atkbd: failed to reset the keyboard.\n");
1193                 return EIO;
1194         }
1195
1196         /*
1197          * Check if we have an XT keyboard before we attempt to reset it.
1198          * The procedure assumes that the keyboard and the controller have
1199          * been set up properly by BIOS and have not been messed up
1200          * during the boot process.
1201          */
1202         codeset = -1;
1203         if (flags & KB_CONF_ALT_SCANCODESET)
1204                 /* the user says there is a XT keyboard */
1205                 codeset = 1;
1206 #ifdef KBD_DETECT_XT_KEYBOARD
1207         else if ((c & KBD_TRANSLATION) == 0) {
1208                 /* SET_SCANCODE_SET is not always supported; ignore error */
1209                 if (send_kbd_command_and_data(kbdc, KBDC_SET_SCANCODE_SET, 0)
1210                         == KBD_ACK)
1211                         codeset = read_kbd_data(kbdc);
1212         }
1213 #endif /* KBD_DETECT_XT_KEYBOARD */
1214         if (bootverbose)
1215                 kprintf("atkbd: scancode set %d\n", codeset);
1216
1217         /*
1218          * Get the keyboard id.
1219          */
1220         *type = KB_OTHER;
1221         id = get_kbd_id(kbdc, ATKBD_CMD_GETID);
1222         switch(id) {
1223         case 0x41ab:    /* 101/102/... Enhanced */
1224         case 0x83ab:    /* ditto */
1225         case 0x54ab:    /* SpaceSaver */
1226         case 0x84ab:    /* ditto */
1227 #if 0
1228         case 0x90ab:    /* 'G' */
1229         case 0x91ab:    /* 'P' */
1230         case 0x92ab:    /* 'A' */
1231 #endif
1232                 *type = KB_101;
1233                 break;
1234         case -1:        /* AT 84 keyboard doesn't return ID */
1235                 *type = KB_84;
1236                 break;
1237         default:
1238                 break;
1239         }
1240         if (bootverbose)
1241                 kprintf("atkbd: keyboard ID 0x%x (%d)\n", id, *type);
1242
1243         /*
1244          * Allow us to set the XT_KEYBD flag in UserConfig so that keyboards
1245          * such as those on the IBM ThinkPad laptop computers can be used
1246          * with the standard console driver.
1247          */
1248         if (codeset == 1) {
1249                 if (send_kbd_command_and_data(kbdc,
1250                         KBDC_SET_SCANCODE_SET, codeset) == KBD_ACK) {
1251                         /* XT kbd doesn't need scan code translation */
1252                         c &= ~KBD_TRANSLATION;
1253                 } else {
1254                         /*
1255                          * KEYBOARD ERROR
1256                          * The XT kbd isn't usable unless the proper scan
1257                          * code set is selected.
1258                          */
1259                         set_controller_command_byte(kbdc,
1260                                                     KBD_KBD_CONTROL_BITS, c);
1261                         kbdc_lock(kbdc, FALSE);
1262                         kprintf("atkbd: unable to set the XT keyboard mode.\n");
1263                         return EIO;
1264                 }
1265         }
1266
1267 #if 0
1268         if (send_kbd_command_and_data(kbdc, ATKBD_CMD_EX_ENABLE, 0x71) != KBD_ACK)
1269                 kprintf("atkbd: can't CMD_EX_ENABLE\n");
1270
1271         if (send_kbd_command(kbdc, ATKBD_CMD_SETALL_MB) != KBD_ACK)
1272                 kprintf("atkbd: can't SETALL_MB\n");
1273         if (send_kbd_command(kbdc, ATKBD_CMD_SETALL_MBR) != KBD_ACK)
1274                 kprintf("atkbd: can't SETALL_MBR\n");
1275 #endif
1276 #if 0
1277         if (send_kbd_command_and_data(kbdc, ATKBD_CMD_SSCANSET, 2) != KBD_ACK)
1278                 kprintf("atkbd: can't SSCANSET\n");
1279         if (send_kbd_command_and_data(kbdc, ATKBD_CMD_GSCANSET, 0) != KBD_ACK)
1280                 kprintf("atkbd: can't SSCANSET\n");
1281         else
1282                 kprintf("atkbd: scanset %d\n", read_kbd_data(kbdc));
1283 #endif
1284 #if 0
1285         kprintf("atkbd: id %04x\n", get_kbd_id(kbdc, ATKBD_CMD_OK_GETID));
1286         if (send_kbd_command_and_data(kbdc, ATKBD_CMD_SETLEDS, 0) != KBD_ACK)
1287                 kprintf("atkbd: setleds failed\n");
1288         if (send_kbd_command_and_data(kbdc, ATKBD_CMD_SETREP, 255) != KBD_ACK)
1289                 kprintf("atkbd: setrep failed\n");
1290         if (send_kbd_command(kbdc, ATKBD_CMD_RESEND) != KBD_ACK)
1291                 kprintf("atkbd: resend failed\n");
1292 #endif
1293         /*
1294          * Some keyboards require a SETLEDS command to be sent after
1295          * the reset command before they will send keystrokes to us
1296          * (Acer C720).
1297          */
1298         if (send_kbd_command_and_data(kbdc, ATKBD_CMD_SETLEDS, 0) != KBD_ACK)
1299                 kprintf("atkbd: setleds failed\n");
1300         send_kbd_command(kbdc, ATKBD_CMD_ENABLE);
1301
1302 #if 0
1303         /* DEBUGGING */
1304         {
1305                 int retry;
1306                 int c;
1307                 kprintf("atkbd: waiting for keypress");
1308                 for (retry = 0; retry < 10; ++retry) {
1309                         c = read_kbd_data_no_wait(kbdc);
1310                         kprintf(" %d", c);
1311                         tsleep(&c, 0, "wait", hz);
1312                 }
1313                 kprintf("\n");
1314         }
1315 #endif
1316
1317         if (mux_version == -1) {
1318                 mux_mask = 0;
1319                 mux_val = 0;
1320         } else {
1321                 mux_mask = KBD_AUX_CONTROL_BITS;
1322                 mux_val = 0;
1323                 kprintf("atkbd: setaux for multiplexer\n");
1324         }
1325
1326         /* enable the keyboard port and intr. */
1327         if (!set_controller_command_byte(kbdc,
1328                 KBD_KBD_CONTROL_BITS | KBD_TRANSLATION |
1329                 KBD_OVERRIDE_KBD_LOCK | mux_mask,
1330                 (c & (KBD_TRANSLATION | KBD_OVERRIDE_KBD_LOCK))
1331                     | KBD_ENABLE_KBD_PORT | KBD_ENABLE_KBD_INT | mux_val)) {
1332                 /*
1333                  * CONTROLLER ERROR
1334                  * This is serious; we are left with the disabled
1335                  * keyboard intr.
1336                  */
1337                 set_controller_command_byte(kbdc,
1338                                 KBD_KBD_CONTROL_BITS | KBD_TRANSLATION |
1339                                 KBD_OVERRIDE_KBD_LOCK | mux_mask,
1340                                 c);
1341                 kbdc_lock(kbdc, FALSE);
1342                 kprintf("atkbd: unable to enable the keyboard port and intr.\n");
1343                 return EIO;
1344         }
1345
1346         kbdc_lock(kbdc, FALSE);
1347         return 0;
1348 }
1349
1350 #if 0
1351
1352 static
1353 int
1354 atkbd_setmuxmode(KBDC kbdc, int enable, int *mux_version)
1355 {
1356         int param;
1357         int val;
1358         int i;
1359
1360         kbdc->mux_active = 0;
1361         empty_both_buffers(kbdc, 100);
1362         val = 0xf0;
1363         if ((param = write_controller_w1r1(kbdc, KBDC_AUX_LOOP, val)) != val) {
1364                 kprintf("setmuxmode: fail1\n");
1365                 return(-1);
1366         }
1367         val = enable ? 0x56 : 0xf6;
1368         if ((param = write_controller_w1r1(kbdc, KBDC_AUX_LOOP, val)) != val) {
1369                 kprintf("setmuxmode: fail2\n");
1370                 return(-1);
1371         }
1372         val = enable ? 0xa4 : 0xa5;
1373         if ((param = write_controller_w1r1(kbdc, KBDC_AUX_LOOP, val)) != val) {
1374                 kprintf("setmuxmode: fail3\n");
1375                 return(-1);
1376         }
1377         kprintf("mux version %02x\n", param);
1378         if (param == 0xac) {
1379                 kprintf("setmuxmode: fail4\n");
1380                 return(-1);
1381         }
1382
1383         if (enable) {
1384                 for (i = 0; i < KBD_NUM_MUX_PORTS; ++i) {
1385                         write_controller_command(kbdc, KBDC_MUX_PFX + i);
1386                         write_controller_command(kbdc, KBDC_ENABLE_AUX_PORT);
1387
1388                 }
1389         }
1390         kbdc->mux_active = 1;
1391         if (mux_version)
1392                 *mux_version = param;
1393         return 0;
1394 }
1395
1396 #endif
1397
1398 static int
1399 write_kbd(KBDC kbdc, int command, int data)
1400 {
1401     /* prevent the timeout routine from polling the keyboard */
1402     if (!kbdc_lock(kbdc, TRUE))
1403         return EBUSY;
1404
1405     /* disable the keyboard and mouse interrupt */
1406     crit_enter();
1407
1408 #if 0
1409     /*
1410      * XXX NOTE: We can't just disable the KBD port any more, even
1411      *           temporarily, without blowing up some BIOS emulations
1412      *           if not followed by a full reset.
1413      */
1414     c = get_controller_command_byte(kbdc);
1415     if ((c == -1) ||
1416         !set_controller_command_byte(kbdc,
1417                 KBD_KBD_CONTROL_BITS,
1418                 KBD_DISABLE_KBD_PORT | KBD_DISABLE_KBD_INT)) {
1419         /* CONTROLLER ERROR */
1420         kbdc_lock(kbdc, FALSE);
1421         crit_exit();
1422         return EIO;
1423     }
1424     /*
1425      * Now that the keyboard controller is told not to generate
1426      * the keyboard and mouse interrupts, call `splx()' to allow
1427      * the other tty interrupts. The clock interrupt may also occur,
1428      * but the timeout routine (`scrn_timer()') will be blocked
1429      * by the lock flag set via `kbdc_lock()'
1430      */
1431     crit_exit();
1432 #endif
1433
1434     if (send_kbd_command_and_data(kbdc, command, data) != KBD_ACK)
1435         send_kbd_command(kbdc, KBDC_ENABLE_KBD);
1436
1437 #if 0
1438     /* restore the interrupts */
1439     if (!set_controller_command_byte(kbdc, KBD_KBD_CONTROL_BITS, c)) {
1440         /* CONTROLLER ERROR */
1441     }
1442 #else
1443     crit_exit();
1444 #endif
1445     kbdc_lock(kbdc, FALSE);
1446
1447     return 0;
1448 }
1449
1450 static int
1451 get_kbd_id(KBDC kbdc, int cmd)
1452 {
1453         int id1, id2;
1454
1455         empty_both_buffers(kbdc, 10);
1456         id1 = id2 = -1;
1457         if (send_kbd_command(kbdc, cmd) != KBD_ACK)
1458                 return -1;
1459
1460         DELAY(10000);   /* 10 msec delay */
1461         id1 = read_kbd_data(kbdc);
1462         if (id1 != -1)
1463                 id2 = read_kbd_data(kbdc);
1464
1465         if ((id1 == -1) || (id2 == -1)) {
1466                 empty_both_buffers(kbdc, 10);
1467                 test_controller(kbdc);
1468                 test_kbd_port(kbdc);
1469                 return -1;
1470         }
1471         return ((id2 << 8) | id1);
1472 }
1473
1474 static int delays[] = { 250, 500, 750, 1000 };
1475 static int rates[] = {  34,  38,  42,  46,  50,  55,  59,  63,
1476                         68,  76,  84,  92, 100, 110, 118, 126,
1477                        136, 152, 168, 184, 200, 220, 236, 252,
1478                        272, 304, 336, 368, 400, 440, 472, 504 };
1479
1480 static int
1481 typematic_delay(int i)
1482 {
1483         return delays[(i >> 5) & 3];
1484 }
1485
1486 static int
1487 typematic_rate(int i)
1488 {
1489         return rates[i & 0x1f];
1490 }
1491
1492 static int
1493 typematic(int delay, int rate)
1494 {
1495         int value;
1496         int i;
1497
1498         for (i = NELEM(delays) - 1; i > 0; --i) {
1499                 if (delay >= delays[i])
1500                         break;
1501         }
1502         value = i << 5;
1503         for (i = NELEM(rates) - 1; i > 0; --i) {
1504                 if (rate >= rates[i])
1505                         break;
1506         }
1507         value |= i;
1508         return value;
1509 }