| 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 | int |
| 65 | atkbd_probe_unit(int unit, int ctlr, int irq, int flags) |
| 66 | { |
| 67 | keyboard_switch_t *sw; |
| 68 | int args[2]; |
| 69 | int error; |
| 70 | |
| 71 | sw = kbd_get_switch(ATKBD_DRIVER_NAME); |
| 72 | if (sw == NULL) { |
| 73 | return ENXIO; |
| 74 | } |
| 75 | |
| 76 | args[0] = ctlr; |
| 77 | args[1] = irq; |
| 78 | error = (*sw->probe)(unit, args, flags); |
| 79 | |
| 80 | if (error) |
| 81 | return error; |
| 82 | return 0; |
| 83 | } |
| 84 | |
| 85 | int |
| 86 | atkbd_attach_unit(int unit, keyboard_t **kbd, int ctlr, int irq, int flags) |
| 87 | { |
| 88 | keyboard_switch_t *sw; |
| 89 | int args[2]; |
| 90 | int error; |
| 91 | |
| 92 | sw = kbd_get_switch(ATKBD_DRIVER_NAME); |
| 93 | if (sw == NULL) { |
| 94 | return ENXIO; |
| 95 | } |
| 96 | |
| 97 | /* reset, initialize and enable the device */ |
| 98 | args[0] = ctlr; |
| 99 | args[1] = irq; |
| 100 | *kbd = NULL; |
| 101 | error = (*sw->probe)(unit, args, flags); |
| 102 | if (error) { |
| 103 | return error; |
| 104 | } |
| 105 | error = (*sw->init)(unit, kbd, args, flags); |
| 106 | if (error) { |
| 107 | return error; |
| 108 | } |
| 109 | (*sw->enable)(*kbd); |
| 110 | |
| 111 | #ifdef KBD_INSTALL_CDEV |
| 112 | /* attach a virtual keyboard cdev */ |
| 113 | error = kbd_attach(*kbd); |
| 114 | if (error) { |
| 115 | return error; |
| 116 | } |
| 117 | #endif |
| 118 | |
| 119 | /* |
| 120 | * This is a kludge to compensate for lost keyboard interrupts. |
| 121 | * A similar code used to be in syscons. See below. XXX |
| 122 | */ |
| 123 | atkbd_timeout(*kbd); |
| 124 | |
| 125 | if (bootverbose) |
| 126 | (*sw->diag)(*kbd, bootverbose); |
| 127 | |
| 128 | return 0; |
| 129 | } |
| 130 | |
| 131 | static void |
| 132 | atkbd_timeout(void *arg) |
| 133 | { |
| 134 | keyboard_t *kbd; |
| 135 | |
| 136 | /* |
| 137 | * The original text of the following comments are extracted |
| 138 | * from syscons.c (1.287) |
| 139 | * |
| 140 | * With release 2.1 of the Xaccel server, the keyboard is left |
| 141 | * hanging pretty often. Apparently an interrupt from the |
| 142 | * keyboard is lost, and I don't know why (yet). |
| 143 | * This ugly hack calls the low-level interrupt routine if input |
| 144 | * is ready for the keyboard and conveniently hides the problem. XXX |
| 145 | * |
| 146 | * Try removing anything stuck in the keyboard controller; whether |
| 147 | * it's a keyboard scan code or mouse data. The low-level |
| 148 | * interrupt routine doesn't read the mouse data directly, |
| 149 | * but the keyboard controller driver will, as a side effect. |
| 150 | */ |
| 151 | /* |
| 152 | * And here is bde's original comment about this: |
| 153 | * |
| 154 | * This is necessary to handle edge triggered interrupts - if we |
| 155 | * returned when our IRQ is high due to unserviced input, then there |
| 156 | * would be no more keyboard IRQs until the keyboard is reset by |
| 157 | * external powers. |
| 158 | * |
| 159 | * The keyboard apparently unwedges the irq in most cases. |
| 160 | */ |
| 161 | crit_enter(); |
| 162 | kbd = (keyboard_t *)arg; |
| 163 | if (kbd_lock(kbd, TRUE)) { |
| 164 | /* |
| 165 | * We have seen the lock flag is not set. Let's reset |
| 166 | * the flag early, otherwise the LED update routine fails |
| 167 | * which may want the lock during the interrupt routine. |
| 168 | */ |
| 169 | kbd_lock(kbd, FALSE); |
| 170 | if (kbd_check_char(kbd)) |
| 171 | kbd_intr(kbd, NULL); |
| 172 | } |
| 173 | callout_reset(&kbd->kb_atkbd_timeout_ch, hz / 10, atkbd_timeout, arg); |
| 174 | crit_exit(); |
| 175 | } |
| 176 | |
| 177 | /* LOW-LEVEL */ |
| 178 | |
| 179 | #include <machine/limits.h> |
| 180 | #include <machine/clock.h> |
| 181 | |
| 182 | #define ATKBD_DEFAULT 0 |
| 183 | |
| 184 | typedef struct atkbd_state { |
| 185 | KBDC kbdc; /* keyboard controller */ |
| 186 | int ks_mode; /* input mode (K_XLATE,K_RAW,K_CODE) */ |
| 187 | int ks_flags; /* flags */ |
| 188 | #define COMPOSE (1 << 0) |
| 189 | int ks_polling; |
| 190 | int ks_state; /* shift/lock key state */ |
| 191 | int ks_accents; /* accent key index (> 0) */ |
| 192 | u_int ks_composed_char; /* composed char code (> 0) */ |
| 193 | u_char ks_prefix; /* AT scan code prefix */ |
| 194 | } atkbd_state_t; |
| 195 | |
| 196 | /* keyboard driver declaration */ |
| 197 | static int atkbd_configure(int flags); |
| 198 | static kbd_probe_t atkbd_probe; |
| 199 | static kbd_init_t atkbd_init; |
| 200 | static kbd_term_t atkbd_term; |
| 201 | static kbd_intr_t atkbd_intr; |
| 202 | static kbd_test_if_t atkbd_test_if; |
| 203 | static kbd_enable_t atkbd_enable; |
| 204 | static kbd_disable_t atkbd_disable; |
| 205 | static kbd_read_t atkbd_read; |
| 206 | static kbd_check_t atkbd_check; |
| 207 | static kbd_read_char_t atkbd_read_char; |
| 208 | static kbd_check_char_t atkbd_check_char; |
| 209 | static kbd_ioctl_t atkbd_ioctl; |
| 210 | static kbd_lock_t atkbd_lock; |
| 211 | static kbd_clear_state_t atkbd_clear_state; |
| 212 | static kbd_get_state_t atkbd_get_state; |
| 213 | static kbd_set_state_t atkbd_set_state; |
| 214 | static kbd_poll_mode_t atkbd_poll; |
| 215 | |
| 216 | keyboard_switch_t atkbdsw = { |
| 217 | atkbd_probe, |
| 218 | atkbd_init, |
| 219 | atkbd_term, |
| 220 | atkbd_intr, |
| 221 | atkbd_test_if, |
| 222 | atkbd_enable, |
| 223 | atkbd_disable, |
| 224 | atkbd_read, |
| 225 | atkbd_check, |
| 226 | atkbd_read_char, |
| 227 | atkbd_check_char, |
| 228 | atkbd_ioctl, |
| 229 | atkbd_lock, |
| 230 | atkbd_clear_state, |
| 231 | atkbd_get_state, |
| 232 | atkbd_set_state, |
| 233 | genkbd_get_fkeystr, |
| 234 | atkbd_poll, |
| 235 | genkbd_diag, |
| 236 | }; |
| 237 | |
| 238 | KEYBOARD_DRIVER(atkbd, atkbdsw, atkbd_configure); |
| 239 | |
| 240 | /* local functions */ |
| 241 | static int get_typematic(keyboard_t *kbd); |
| 242 | static int setup_kbd_port(KBDC kbdc, int port, int intr); |
| 243 | static int get_kbd_echo(KBDC kbdc); |
| 244 | static int probe_keyboard(KBDC kbdc, int flags); |
| 245 | static int init_keyboard(KBDC kbdc, int *type, int flags); |
| 246 | static int write_kbd(KBDC kbdc, int command, int data); |
| 247 | static int get_kbd_id(KBDC kbdc); |
| 248 | static int typematic(int delay, int rate); |
| 249 | static int typematic_delay(int delay); |
| 250 | static int typematic_rate(int rate); |
| 251 | |
| 252 | /* local variables */ |
| 253 | |
| 254 | /* the initial key map, accent map and fkey strings */ |
| 255 | #ifdef ATKBD_DFLT_KEYMAP |
| 256 | #define KBD_DFLT_KEYMAP |
| 257 | #include "atkbdmap.h" |
| 258 | #endif |
| 259 | #include "kbdtables.h" |
| 260 | |
| 261 | /* structures for the default keyboard */ |
| 262 | static keyboard_t default_kbd; |
| 263 | static atkbd_state_t default_kbd_state; |
| 264 | static keymap_t default_keymap; |
| 265 | static accentmap_t default_accentmap; |
| 266 | static fkeytab_t default_fkeytab[NUM_FKEYS]; |
| 267 | |
| 268 | /* |
| 269 | * The back door to the keyboard driver! |
| 270 | * This function is called by the console driver, via the kbdio module, |
| 271 | * to tickle keyboard drivers when the low-level console is being initialized. |
| 272 | * Almost nothing in the kernel has been initialied yet. Try to probe |
| 273 | * keyboards if possible. |
| 274 | * NOTE: because of the way the low-level console is initialized, this routine |
| 275 | * may be called more than once!! |
| 276 | */ |
| 277 | static int |
| 278 | atkbd_configure(int flags) |
| 279 | { |
| 280 | keyboard_t *kbd; |
| 281 | int arg[2]; |
| 282 | int i; |
| 283 | |
| 284 | /* |
| 285 | * Probe the keyboard controller, if not present or if the driver |
| 286 | * is disabled, unregister the keyboard if any. |
| 287 | */ |
| 288 | if (atkbdc_configure() != 0 || |
| 289 | resource_disabled("atkbd", ATKBD_DEFAULT)) { |
| 290 | i = kbd_find_keyboard(ATKBD_DRIVER_NAME, ATKBD_DEFAULT); |
| 291 | if (i >= 0) { |
| 292 | kbd = kbd_get_keyboard(i); |
| 293 | KBD_ALWAYS_LOCK(kbd); |
| 294 | kbd_unregister(kbd); |
| 295 | kbd = NULL; /* huh? */ |
| 296 | } |
| 297 | return 0; |
| 298 | } |
| 299 | |
| 300 | /* XXX: a kludge to obtain the device configuration flags */ |
| 301 | if (resource_int_value("atkbd", ATKBD_DEFAULT, "flags", &i) == 0) |
| 302 | flags |= i; |
| 303 | |
| 304 | /* probe the default keyboard */ |
| 305 | arg[0] = -1; |
| 306 | arg[1] = -1; |
| 307 | kbd = NULL; |
| 308 | if (atkbd_probe(ATKBD_DEFAULT, arg, flags)) { |
| 309 | return 0; |
| 310 | } |
| 311 | if (atkbd_init(ATKBD_DEFAULT, &kbd, arg, flags)) { |
| 312 | return 0; |
| 313 | } |
| 314 | |
| 315 | /* return the number of found keyboards */ |
| 316 | return 1; |
| 317 | } |
| 318 | |
| 319 | /* low-level functions */ |
| 320 | |
| 321 | /* detect a keyboard */ |
| 322 | static int |
| 323 | atkbd_probe(int unit, void *arg, int flags) |
| 324 | { |
| 325 | KBDC kbdc; |
| 326 | int *data = (int *)arg; /* data[0]: controller, data[1]: irq */ |
| 327 | |
| 328 | |
| 329 | if (unit == ATKBD_DEFAULT) { |
| 330 | if (KBD_IS_PROBED(&default_kbd)) { |
| 331 | return 0; |
| 332 | } |
| 333 | } |
| 334 | |
| 335 | kbdc = atkbdc_open(data[0]); |
| 336 | if (kbdc == NULL) { |
| 337 | return ENXIO; |
| 338 | } |
| 339 | if (probe_keyboard(kbdc, flags)) { |
| 340 | if (flags & KB_CONF_FAIL_IF_NO_KBD) { |
| 341 | return ENXIO; |
| 342 | } |
| 343 | } |
| 344 | |
| 345 | return 0; |
| 346 | } |
| 347 | |
| 348 | /* reset and initialize the device */ |
| 349 | static int |
| 350 | atkbd_init(int unit, keyboard_t **kbdp, void *arg, int flags) |
| 351 | { |
| 352 | keyboard_t *kbd; |
| 353 | atkbd_state_t *state; |
| 354 | keymap_t *keymap; |
| 355 | accentmap_t *accmap; |
| 356 | fkeytab_t *fkeymap; |
| 357 | int fkeymap_size; |
| 358 | int delay[2]; |
| 359 | int *data = (int *)arg; /* data[0]: controller, data[1]: irq */ |
| 360 | |
| 361 | /* XXX */ |
| 362 | if (unit == ATKBD_DEFAULT) { |
| 363 | *kbdp = kbd = &default_kbd; |
| 364 | if (KBD_IS_INITIALIZED(kbd) && KBD_IS_CONFIGURED(kbd)) { |
| 365 | return 0; |
| 366 | } |
| 367 | state = &default_kbd_state; |
| 368 | keymap = &default_keymap; |
| 369 | accmap = &default_accentmap; |
| 370 | fkeymap = default_fkeytab; |
| 371 | fkeymap_size = NELEM(default_fkeytab); |
| 372 | } else if (*kbdp == NULL) { |
| 373 | *kbdp = kbd = kmalloc(sizeof(*kbd), M_DEVBUF, M_WAITOK|M_ZERO); |
| 374 | state = kmalloc(sizeof(*state), M_DEVBUF, M_WAITOK|M_ZERO); |
| 375 | keymap = kmalloc(sizeof(key_map), M_DEVBUF, M_WAITOK); |
| 376 | accmap = kmalloc(sizeof(accent_map), M_DEVBUF, M_WAITOK); |
| 377 | fkeymap = kmalloc(sizeof(fkey_tab), M_DEVBUF, M_WAITOK); |
| 378 | fkeymap_size = NELEM(fkey_tab); |
| 379 | } else if (KBD_IS_INITIALIZED(*kbdp) && KBD_IS_CONFIGURED(*kbdp)) { |
| 380 | return 0; |
| 381 | } else { |
| 382 | kbd = *kbdp; |
| 383 | state = (atkbd_state_t *)kbd->kb_data; |
| 384 | bzero(state, sizeof(*state)); |
| 385 | keymap = kbd->kb_keymap; |
| 386 | accmap = kbd->kb_accentmap; |
| 387 | fkeymap = kbd->kb_fkeytab; |
| 388 | fkeymap_size = kbd->kb_fkeytab_size; |
| 389 | } |
| 390 | |
| 391 | if (!KBD_IS_PROBED(kbd)) { |
| 392 | state->kbdc = atkbdc_open(data[0]); |
| 393 | if (state->kbdc == NULL) { |
| 394 | return ENXIO; |
| 395 | } |
| 396 | kbd_init_struct(kbd, ATKBD_DRIVER_NAME, KB_OTHER, unit, flags, |
| 397 | KB_PRI_ATKBD, 0, 0); |
| 398 | bcopy(&key_map, keymap, sizeof(key_map)); |
| 399 | bcopy(&accent_map, accmap, sizeof(accent_map)); |
| 400 | bcopy(fkey_tab, fkeymap, |
| 401 | imin(fkeymap_size*sizeof(fkeymap[0]), sizeof(fkey_tab))); |
| 402 | kbd_set_maps(kbd, keymap, accmap, fkeymap, fkeymap_size); |
| 403 | kbd->kb_data = (void *)state; |
| 404 | |
| 405 | if (probe_keyboard(state->kbdc, flags)) { /* shouldn't happen */ |
| 406 | if (flags & KB_CONF_FAIL_IF_NO_KBD) { |
| 407 | return ENXIO; |
| 408 | } |
| 409 | } else { |
| 410 | KBD_FOUND_DEVICE(kbd); |
| 411 | } |
| 412 | atkbd_clear_state(kbd); |
| 413 | state->ks_mode = K_XLATE; |
| 414 | /* |
| 415 | * FIXME: set the initial value for lock keys in ks_state |
| 416 | * according to the BIOS data? |
| 417 | */ |
| 418 | KBD_PROBE_DONE(kbd); |
| 419 | } |
| 420 | if (!KBD_IS_INITIALIZED(kbd) && !(flags & KB_CONF_PROBE_ONLY)) { |
| 421 | kbd->kb_config = flags & ~KB_CONF_PROBE_ONLY; |
| 422 | if (KBD_HAS_DEVICE(kbd) |
| 423 | && init_keyboard(state->kbdc, &kbd->kb_type, kbd->kb_config) |
| 424 | && (kbd->kb_config & KB_CONF_FAIL_IF_NO_KBD)) { |
| 425 | return ENXIO; |
| 426 | } |
| 427 | atkbd_ioctl(kbd, KDSETLED, (caddr_t)&state->ks_state); |
| 428 | get_typematic(kbd); |
| 429 | delay[0] = kbd->kb_delay1; |
| 430 | delay[1] = kbd->kb_delay2; |
| 431 | atkbd_ioctl(kbd, KDSETREPEAT, (caddr_t)delay); |
| 432 | KBD_INIT_DONE(kbd); |
| 433 | } |
| 434 | if (!KBD_IS_CONFIGURED(kbd)) { |
| 435 | if (kbd_register(kbd) < 0) { |
| 436 | return ENXIO; |
| 437 | } |
| 438 | KBD_CONFIG_DONE(kbd); |
| 439 | } |
| 440 | |
| 441 | return 0; |
| 442 | } |
| 443 | |
| 444 | /* finish using this keyboard */ |
| 445 | static int |
| 446 | atkbd_term(keyboard_t *kbd) |
| 447 | { |
| 448 | kbd_unregister(kbd); |
| 449 | return 0; |
| 450 | } |
| 451 | |
| 452 | /* keyboard interrupt routine */ |
| 453 | static int |
| 454 | atkbd_intr(keyboard_t *kbd, void *arg) |
| 455 | { |
| 456 | atkbd_state_t *state; |
| 457 | int delay[2]; |
| 458 | int c; |
| 459 | |
| 460 | if (KBD_IS_ACTIVE(kbd) && KBD_IS_BUSY(kbd)) { |
| 461 | /* let the callback function to process the input */ |
| 462 | (*kbd->kb_callback.kc_func)(kbd, KBDIO_KEYINPUT, |
| 463 | kbd->kb_callback.kc_arg); |
| 464 | } else { |
| 465 | /* read and discard the input; no one is waiting for input */ |
| 466 | do { |
| 467 | c = atkbd_read_char(kbd, FALSE); |
| 468 | } while (c != NOKEY); |
| 469 | |
| 470 | if (!KBD_HAS_DEVICE(kbd)) { |
| 471 | /* |
| 472 | * The keyboard was not detected before; |
| 473 | * it must have been reconnected! |
| 474 | */ |
| 475 | state = (atkbd_state_t *)kbd->kb_data; |
| 476 | init_keyboard(state->kbdc, &kbd->kb_type, |
| 477 | kbd->kb_config); |
| 478 | atkbd_ioctl(kbd, KDSETLED, (caddr_t)&state->ks_state); |
| 479 | get_typematic(kbd); |
| 480 | delay[0] = kbd->kb_delay1; |
| 481 | delay[1] = kbd->kb_delay2; |
| 482 | atkbd_ioctl(kbd, KDSETREPEAT, (caddr_t)delay); |
| 483 | KBD_FOUND_DEVICE(kbd); |
| 484 | } |
| 485 | } |
| 486 | |
| 487 | return 0; |
| 488 | } |
| 489 | |
| 490 | /* test the interface to the device */ |
| 491 | static int |
| 492 | atkbd_test_if(keyboard_t *kbd) |
| 493 | { |
| 494 | int error; |
| 495 | |
| 496 | error = 0; |
| 497 | empty_both_buffers(((atkbd_state_t *)kbd->kb_data)->kbdc, 10); |
| 498 | crit_enter(); |
| 499 | if (!test_controller(((atkbd_state_t *)kbd->kb_data)->kbdc)) |
| 500 | error = EIO; |
| 501 | else if (test_kbd_port(((atkbd_state_t *)kbd->kb_data)->kbdc) != 0) |
| 502 | error = EIO; |
| 503 | crit_exit(); |
| 504 | |
| 505 | return error; |
| 506 | } |
| 507 | |
| 508 | /* |
| 509 | * Enable the access to the device; until this function is called, |
| 510 | * the client cannot read from the keyboard. |
| 511 | */ |
| 512 | static int |
| 513 | atkbd_enable(keyboard_t *kbd) |
| 514 | { |
| 515 | crit_enter(); |
| 516 | KBD_ACTIVATE(kbd); |
| 517 | crit_exit(); |
| 518 | return 0; |
| 519 | } |
| 520 | |
| 521 | /* disallow the access to the device */ |
| 522 | static int |
| 523 | atkbd_disable(keyboard_t *kbd) |
| 524 | { |
| 525 | crit_enter(); |
| 526 | KBD_DEACTIVATE(kbd); |
| 527 | crit_exit(); |
| 528 | return 0; |
| 529 | } |
| 530 | |
| 531 | /* read one byte from the keyboard if it's allowed */ |
| 532 | static int |
| 533 | atkbd_read(keyboard_t *kbd, int wait) |
| 534 | { |
| 535 | int c, ret; |
| 536 | |
| 537 | if (wait) |
| 538 | c = read_kbd_data(((atkbd_state_t *)kbd->kb_data)->kbdc); |
| 539 | else |
| 540 | c = read_kbd_data_no_wait(((atkbd_state_t *)kbd->kb_data)->kbdc); |
| 541 | if (c != -1) |
| 542 | ++kbd->kb_count; |
| 543 | |
| 544 | ret = (KBD_IS_ACTIVE(kbd) ? c : -1); |
| 545 | |
| 546 | return ret; |
| 547 | } |
| 548 | |
| 549 | /* check if data is waiting */ |
| 550 | static int |
| 551 | atkbd_check(keyboard_t *kbd) |
| 552 | { |
| 553 | int ret; |
| 554 | |
| 555 | |
| 556 | if (!KBD_IS_ACTIVE(kbd)) { |
| 557 | return FALSE; |
| 558 | } |
| 559 | ret = kbdc_data_ready(((atkbd_state_t *)kbd->kb_data)->kbdc); |
| 560 | |
| 561 | return ret; |
| 562 | } |
| 563 | |
| 564 | /* read char from the keyboard */ |
| 565 | static u_int |
| 566 | atkbd_read_char(keyboard_t *kbd, int wait) |
| 567 | { |
| 568 | atkbd_state_t *state; |
| 569 | u_int action; |
| 570 | int scancode; |
| 571 | int keycode; |
| 572 | |
| 573 | state = (atkbd_state_t *)kbd->kb_data; |
| 574 | next_code: |
| 575 | /* do we have a composed char to return? */ |
| 576 | if (!(state->ks_flags & COMPOSE) && (state->ks_composed_char > 0)) { |
| 577 | action = state->ks_composed_char; |
| 578 | state->ks_composed_char = 0; |
| 579 | if (action > UCHAR_MAX) { |
| 580 | return ERRKEY; |
| 581 | } |
| 582 | return action; |
| 583 | } |
| 584 | |
| 585 | /* see if there is something in the keyboard port */ |
| 586 | if (wait) { |
| 587 | do { |
| 588 | scancode = read_kbd_data(state->kbdc); |
| 589 | } while (scancode == -1); |
| 590 | } else { |
| 591 | scancode = read_kbd_data_no_wait(state->kbdc); |
| 592 | if (scancode == -1) { |
| 593 | return NOKEY; |
| 594 | } |
| 595 | } |
| 596 | ++kbd->kb_count; |
| 597 | |
| 598 | #if KBDIO_DEBUG >= 10 |
| 599 | kprintf("atkbd_read_char(): scancode:0x%x\n", scancode); |
| 600 | #endif |
| 601 | |
| 602 | /* return the byte as is for the K_RAW mode */ |
| 603 | if (state->ks_mode == K_RAW) { |
| 604 | return scancode; |
| 605 | } |
| 606 | |
| 607 | /* translate the scan code into a keycode */ |
| 608 | keycode = scancode & 0x7F; |
| 609 | switch (state->ks_prefix) { |
| 610 | case 0x00: /* normal scancode */ |
| 611 | switch(scancode) { |
| 612 | case 0xB8: /* left alt (compose key) released */ |
| 613 | if (state->ks_flags & COMPOSE) { |
| 614 | state->ks_flags &= ~COMPOSE; |
| 615 | if (state->ks_composed_char > UCHAR_MAX) |
| 616 | state->ks_composed_char = 0; |
| 617 | } |
| 618 | break; |
| 619 | case 0x38: /* left alt (compose key) pressed */ |
| 620 | if (!(state->ks_flags & COMPOSE)) { |
| 621 | state->ks_flags |= COMPOSE; |
| 622 | state->ks_composed_char = 0; |
| 623 | } |
| 624 | break; |
| 625 | case 0xE0: |
| 626 | case 0xE1: |
| 627 | state->ks_prefix = scancode; |
| 628 | goto next_code; |
| 629 | } |
| 630 | break; |
| 631 | case 0xE0: /* 0xE0 prefix */ |
| 632 | state->ks_prefix = 0; |
| 633 | switch (keycode) { |
| 634 | case 0x1C: /* right enter key */ |
| 635 | keycode = 0x59; |
| 636 | break; |
| 637 | case 0x1D: /* right ctrl key */ |
| 638 | keycode = 0x5A; |
| 639 | break; |
| 640 | case 0x35: /* keypad divide key */ |
| 641 | keycode = 0x5B; |
| 642 | break; |
| 643 | case 0x37: /* print scrn key */ |
| 644 | keycode = 0x5C; |
| 645 | break; |
| 646 | case 0x38: /* right alt key (alt gr) */ |
| 647 | keycode = 0x5D; |
| 648 | break; |
| 649 | case 0x46: /* ctrl-pause/break on AT 101 (see below) */ |
| 650 | keycode = 0x68; |
| 651 | break; |
| 652 | case 0x47: /* grey home key */ |
| 653 | keycode = 0x5E; |
| 654 | break; |
| 655 | case 0x48: /* grey up arrow key */ |
| 656 | keycode = 0x5F; |
| 657 | break; |
| 658 | case 0x49: /* grey page up key */ |
| 659 | keycode = 0x60; |
| 660 | break; |
| 661 | case 0x4B: /* grey left arrow key */ |
| 662 | keycode = 0x61; |
| 663 | break; |
| 664 | case 0x4D: /* grey right arrow key */ |
| 665 | keycode = 0x62; |
| 666 | break; |
| 667 | case 0x4F: /* grey end key */ |
| 668 | keycode = 0x63; |
| 669 | break; |
| 670 | case 0x50: /* grey down arrow key */ |
| 671 | keycode = 0x64; |
| 672 | break; |
| 673 | case 0x51: /* grey page down key */ |
| 674 | keycode = 0x65; |
| 675 | break; |
| 676 | case 0x52: /* grey insert key */ |
| 677 | keycode = 0x66; |
| 678 | break; |
| 679 | case 0x53: /* grey delete key */ |
| 680 | keycode = 0x67; |
| 681 | break; |
| 682 | /* the following 3 are only used on the MS "Natural" keyboard */ |
| 683 | case 0x5b: /* left Window key */ |
| 684 | keycode = 0x69; |
| 685 | break; |
| 686 | case 0x5c: /* right Window key */ |
| 687 | keycode = 0x6a; |
| 688 | break; |
| 689 | case 0x5d: /* menu key */ |
| 690 | keycode = 0x6b; |
| 691 | break; |
| 692 | default: /* ignore everything else */ |
| 693 | goto next_code; |
| 694 | } |
| 695 | break; |
| 696 | case 0xE1: /* 0xE1 prefix */ |
| 697 | /* |
| 698 | * The pause/break key on the 101 keyboard produces: |
| 699 | * E1-1D-45 E1-9D-C5 |
| 700 | * Ctrl-pause/break produces: |
| 701 | * E0-46 E0-C6 (See above.) |
| 702 | */ |
| 703 | state->ks_prefix = 0; |
| 704 | if (keycode == 0x1D) |
| 705 | state->ks_prefix = 0x1D; |
| 706 | goto next_code; |
| 707 | /* NOT REACHED */ |
| 708 | case 0x1D: /* pause / break */ |
| 709 | state->ks_prefix = 0; |
| 710 | if (keycode != 0x45) |
| 711 | goto next_code; |
| 712 | keycode = 0x68; |
| 713 | break; |
| 714 | } |
| 715 | |
| 716 | if (kbd->kb_type == KB_84) { |
| 717 | switch (keycode) { |
| 718 | case 0x37: /* *(numpad)/print screen */ |
| 719 | if (state->ks_flags & SHIFTS) |
| 720 | keycode = 0x5c; /* print screen */ |
| 721 | break; |
| 722 | case 0x45: /* num lock/pause */ |
| 723 | if (state->ks_flags & CTLS) |
| 724 | keycode = 0x68; /* pause */ |
| 725 | break; |
| 726 | case 0x46: /* scroll lock/break */ |
| 727 | if (state->ks_flags & CTLS) |
| 728 | keycode = 0x6c; /* break */ |
| 729 | break; |
| 730 | } |
| 731 | } else if (kbd->kb_type == KB_101) { |
| 732 | switch (keycode) { |
| 733 | case 0x5c: /* print screen */ |
| 734 | if (state->ks_flags & ALTS) |
| 735 | keycode = 0x54; /* sysrq */ |
| 736 | break; |
| 737 | case 0x68: /* pause/break */ |
| 738 | if (state->ks_flags & CTLS) |
| 739 | keycode = 0x6c; /* break */ |
| 740 | break; |
| 741 | } |
| 742 | } |
| 743 | |
| 744 | /* return the key code in the K_CODE mode */ |
| 745 | if (state->ks_mode == K_CODE) { |
| 746 | return (keycode | (scancode & 0x80)); |
| 747 | } |
| 748 | |
| 749 | /* compose a character code */ |
| 750 | if (state->ks_flags & COMPOSE) { |
| 751 | switch (keycode | (scancode & 0x80)) { |
| 752 | /* key pressed, process it */ |
| 753 | case 0x47: case 0x48: case 0x49: /* keypad 7,8,9 */ |
| 754 | state->ks_composed_char *= 10; |
| 755 | state->ks_composed_char += keycode - 0x40; |
| 756 | if (state->ks_composed_char > UCHAR_MAX) |
| 757 | return ERRKEY; |
| 758 | goto next_code; |
| 759 | case 0x4B: case 0x4C: case 0x4D: /* keypad 4,5,6 */ |
| 760 | state->ks_composed_char *= 10; |
| 761 | state->ks_composed_char += keycode - 0x47; |
| 762 | if (state->ks_composed_char > UCHAR_MAX) |
| 763 | return ERRKEY; |
| 764 | goto next_code; |
| 765 | case 0x4F: case 0x50: case 0x51: /* keypad 1,2,3 */ |
| 766 | state->ks_composed_char *= 10; |
| 767 | state->ks_composed_char += keycode - 0x4E; |
| 768 | if (state->ks_composed_char > UCHAR_MAX) |
| 769 | return ERRKEY; |
| 770 | goto next_code; |
| 771 | case 0x52: /* keypad 0 */ |
| 772 | state->ks_composed_char *= 10; |
| 773 | if (state->ks_composed_char > UCHAR_MAX) |
| 774 | return ERRKEY; |
| 775 | goto next_code; |
| 776 | |
| 777 | /* key released, no interest here */ |
| 778 | case 0xC7: case 0xC8: case 0xC9: /* keypad 7,8,9 */ |
| 779 | case 0xCB: case 0xCC: case 0xCD: /* keypad 4,5,6 */ |
| 780 | case 0xCF: case 0xD0: case 0xD1: /* keypad 1,2,3 */ |
| 781 | case 0xD2: /* keypad 0 */ |
| 782 | goto next_code; |
| 783 | |
| 784 | case 0x38: /* left alt key */ |
| 785 | break; |
| 786 | |
| 787 | default: |
| 788 | if (state->ks_composed_char > 0) { |
| 789 | state->ks_flags &= ~COMPOSE; |
| 790 | state->ks_composed_char = 0; |
| 791 | return ERRKEY; |
| 792 | } |
| 793 | break; |
| 794 | } |
| 795 | } |
| 796 | |
| 797 | /* keycode to key action */ |
| 798 | action = genkbd_keyaction(kbd, keycode, scancode & 0x80, |
| 799 | &state->ks_state, &state->ks_accents); |
| 800 | if (action == NOKEY) { |
| 801 | goto next_code; |
| 802 | } else { |
| 803 | return action; |
| 804 | } |
| 805 | } |
| 806 | |
| 807 | /* check if char is waiting */ |
| 808 | static int |
| 809 | atkbd_check_char(keyboard_t *kbd) |
| 810 | { |
| 811 | atkbd_state_t *state; |
| 812 | int ret; |
| 813 | |
| 814 | if (!KBD_IS_ACTIVE(kbd)) { |
| 815 | return FALSE; |
| 816 | } |
| 817 | state = (atkbd_state_t *)kbd->kb_data; |
| 818 | if (!(state->ks_flags & COMPOSE) && (state->ks_composed_char > 0)) { |
| 819 | return TRUE; |
| 820 | } |
| 821 | ret = kbdc_data_ready(state->kbdc); |
| 822 | return ret; |
| 823 | } |
| 824 | |
| 825 | /* some useful control functions */ |
| 826 | static int |
| 827 | atkbd_ioctl(keyboard_t *kbd, u_long cmd, caddr_t arg) |
| 828 | { |
| 829 | /* trasnlate LED_XXX bits into the device specific bits */ |
| 830 | static u_char ledmap[8] = { |
| 831 | 0, 4, 2, 6, 1, 5, 3, 7, |
| 832 | }; |
| 833 | atkbd_state_t *state = kbd->kb_data; |
| 834 | int error; |
| 835 | int i; |
| 836 | |
| 837 | crit_enter(); |
| 838 | |
| 839 | switch (cmd) { |
| 840 | |
| 841 | case KDGKBMODE: /* get keyboard mode */ |
| 842 | *(int *)arg = state->ks_mode; |
| 843 | break; |
| 844 | case KDSKBMODE: /* set keyboard mode */ |
| 845 | switch (*(int *)arg) { |
| 846 | case K_XLATE: |
| 847 | if (state->ks_mode != K_XLATE) { |
| 848 | /* make lock key state and LED state match */ |
| 849 | state->ks_state &= ~LOCK_MASK; |
| 850 | state->ks_state |= KBD_LED_VAL(kbd); |
| 851 | } |
| 852 | /* FALL THROUGH */ |
| 853 | case K_RAW: |
| 854 | case K_CODE: |
| 855 | if (state->ks_mode != *(int *)arg) { |
| 856 | atkbd_clear_state(kbd); |
| 857 | state->ks_mode = *(int *)arg; |
| 858 | } |
| 859 | break; |
| 860 | default: |
| 861 | crit_exit(); |
| 862 | return EINVAL; |
| 863 | } |
| 864 | break; |
| 865 | |
| 866 | case KDGETLED: /* get keyboard LED */ |
| 867 | *(int *)arg = KBD_LED_VAL(kbd); |
| 868 | break; |
| 869 | case KDSETLED: /* set keyboard LED */ |
| 870 | /* NOTE: lock key state in ks_state won't be changed */ |
| 871 | if (*(int *)arg & ~LOCK_MASK) { |
| 872 | crit_exit(); |
| 873 | return EINVAL; |
| 874 | } |
| 875 | i = *(int *)arg; |
| 876 | /* replace CAPS LED with ALTGR LED for ALTGR keyboards */ |
| 877 | if (state->ks_mode == K_XLATE && |
| 878 | kbd->kb_keymap->n_keys > ALTGR_OFFSET) { |
| 879 | if (i & ALKED) |
| 880 | i |= CLKED; |
| 881 | else |
| 882 | i &= ~CLKED; |
| 883 | } |
| 884 | if (KBD_HAS_DEVICE(kbd)) { |
| 885 | error = write_kbd(state->kbdc, KBDC_SET_LEDS, |
| 886 | ledmap[i & LED_MASK]); |
| 887 | if (error) { |
| 888 | crit_exit(); |
| 889 | return error; |
| 890 | } |
| 891 | } |
| 892 | KBD_LED_VAL(kbd) = *(int *)arg; |
| 893 | break; |
| 894 | |
| 895 | case KDGKBSTATE: /* get lock key state */ |
| 896 | *(int *)arg = state->ks_state & LOCK_MASK; |
| 897 | break; |
| 898 | case KDSKBSTATE: /* set lock key state */ |
| 899 | if (*(int *)arg & ~LOCK_MASK) { |
| 900 | crit_exit(); |
| 901 | return EINVAL; |
| 902 | } |
| 903 | state->ks_state &= ~LOCK_MASK; |
| 904 | state->ks_state |= *(int *)arg; |
| 905 | crit_exit(); |
| 906 | /* set LEDs and quit */ |
| 907 | return atkbd_ioctl(kbd, KDSETLED, arg); |
| 908 | |
| 909 | case KDSETREPEAT: /* set keyboard repeat rate (new interface) */ |
| 910 | crit_exit(); |
| 911 | if (!KBD_HAS_DEVICE(kbd)) { |
| 912 | return 0; |
| 913 | } |
| 914 | i = typematic(((int *)arg)[0], ((int *)arg)[1]); |
| 915 | error = write_kbd(state->kbdc, KBDC_SET_TYPEMATIC, i); |
| 916 | if (error == 0) { |
| 917 | kbd->kb_delay1 = typematic_delay(i); |
| 918 | kbd->kb_delay2 = typematic_rate(i); |
| 919 | } |
| 920 | return error; |
| 921 | |
| 922 | case KDSETRAD: /* set keyboard repeat rate (old interface) */ |
| 923 | crit_exit(); |
| 924 | if (!KBD_HAS_DEVICE(kbd)) { |
| 925 | return 0; |
| 926 | } |
| 927 | error = write_kbd(state->kbdc, KBDC_SET_TYPEMATIC, *(int *)arg); |
| 928 | if (error == 0) { |
| 929 | kbd->kb_delay1 = typematic_delay(*(int *)arg); |
| 930 | kbd->kb_delay2 = typematic_rate(*(int *)arg); |
| 931 | } |
| 932 | return error; |
| 933 | |
| 934 | case PIO_KEYMAP: /* set keyboard translation table */ |
| 935 | case PIO_KEYMAPENT: /* set keyboard translation table entry */ |
| 936 | case PIO_DEADKEYMAP: /* set accent key translation table */ |
| 937 | state->ks_accents = 0; |
| 938 | /* FALL THROUGH */ |
| 939 | default: |
| 940 | crit_exit(); |
| 941 | return genkbd_commonioctl(kbd, cmd, arg); |
| 942 | } |
| 943 | |
| 944 | crit_exit(); |
| 945 | return 0; |
| 946 | } |
| 947 | |
| 948 | /* lock the access to the keyboard */ |
| 949 | static int |
| 950 | atkbd_lock(keyboard_t *kbd, int lock) |
| 951 | { |
| 952 | return kbdc_lock(((atkbd_state_t *)kbd->kb_data)->kbdc, lock); |
| 953 | } |
| 954 | |
| 955 | /* clear the internal state of the keyboard */ |
| 956 | static void |
| 957 | atkbd_clear_state(keyboard_t *kbd) |
| 958 | { |
| 959 | atkbd_state_t *state; |
| 960 | |
| 961 | state = (atkbd_state_t *)kbd->kb_data; |
| 962 | state->ks_flags = 0; |
| 963 | state->ks_polling = 0; |
| 964 | state->ks_state &= LOCK_MASK; /* preserve locking key state */ |
| 965 | state->ks_accents = 0; |
| 966 | state->ks_composed_char = 0; |
| 967 | #if 0 |
| 968 | state->ks_prefix = 0; /* XXX */ |
| 969 | #endif |
| 970 | } |
| 971 | |
| 972 | /* save the internal state */ |
| 973 | static int |
| 974 | atkbd_get_state(keyboard_t *kbd, void *buf, size_t len) |
| 975 | { |
| 976 | if (len == 0) |
| 977 | return sizeof(atkbd_state_t); |
| 978 | if (len < sizeof(atkbd_state_t)) |
| 979 | return -1; |
| 980 | |
| 981 | bcopy(kbd->kb_data, buf, sizeof(atkbd_state_t)); |
| 982 | return 0; |
| 983 | } |
| 984 | |
| 985 | /* set the internal state */ |
| 986 | static int |
| 987 | atkbd_set_state(keyboard_t *kbd, void *buf, size_t len) |
| 988 | { |
| 989 | if (len < sizeof(atkbd_state_t)) |
| 990 | return ENOMEM; |
| 991 | if (((atkbd_state_t *)kbd->kb_data)->kbdc |
| 992 | != ((atkbd_state_t *)buf)->kbdc) |
| 993 | return ENOMEM; |
| 994 | bcopy(buf, kbd->kb_data, sizeof(atkbd_state_t)); |
| 995 | return 0; |
| 996 | } |
| 997 | |
| 998 | static int |
| 999 | atkbd_poll(keyboard_t *kbd, int on) |
| 1000 | { |
| 1001 | atkbd_state_t *state; |
| 1002 | |
| 1003 | state = (atkbd_state_t *)kbd->kb_data; |
| 1004 | crit_enter(); |
| 1005 | if (on) |
| 1006 | state->ks_polling = 1; |
| 1007 | else |
| 1008 | state->ks_polling = 0; |
| 1009 | crit_exit(); |
| 1010 | return 0; |
| 1011 | } |
| 1012 | |
| 1013 | /* local functions */ |
| 1014 | |
| 1015 | static int |
| 1016 | get_typematic(keyboard_t *kbd) |
| 1017 | { |
| 1018 | #ifdef __i386__ |
| 1019 | /* |
| 1020 | * Only some systems allow us to retrieve the keyboard repeat |
| 1021 | * rate previously set via the BIOS... |
| 1022 | */ |
| 1023 | struct vm86frame vmf; |
| 1024 | u_int32_t p; |
| 1025 | |
| 1026 | bzero(&vmf, sizeof(vmf)); |
| 1027 | vmf.vmf_ax = 0xc000; |
| 1028 | vm86_intcall(0x15, &vmf); |
| 1029 | if ((vmf.vmf_eflags & PSL_C) || vmf.vmf_ah) |
| 1030 | return ENODEV; |
| 1031 | p = BIOS_PADDRTOVADDR(((u_int32_t)vmf.vmf_es << 4) + vmf.vmf_bx); |
| 1032 | if ((readb(p + 6) & 0x40) == 0) /* int 16, function 0x09 supported? */ |
| 1033 | return ENODEV; |
| 1034 | vmf.vmf_ax = 0x0900; |
| 1035 | vm86_intcall(0x16, &vmf); |
| 1036 | if ((vmf.vmf_al & 0x08) == 0) /* int 16, function 0x0306 supported? */ |
| 1037 | return ENODEV; |
| 1038 | vmf.vmf_ax = 0x0306; |
| 1039 | vm86_intcall(0x16, &vmf); |
| 1040 | kbd->kb_delay1 = typematic_delay(vmf.vmf_bh << 5); |
| 1041 | kbd->kb_delay2 = typematic_rate(vmf.vmf_bl); |
| 1042 | return 0; |
| 1043 | #else |
| 1044 | return ENODEV; |
| 1045 | #endif /* __i386__ */ |
| 1046 | } |
| 1047 | |
| 1048 | static int |
| 1049 | setup_kbd_port(KBDC kbdc, int port, int intr) |
| 1050 | { |
| 1051 | if (!set_controller_command_byte(kbdc, |
| 1052 | KBD_KBD_CONTROL_BITS, |
| 1053 | ((port) ? KBD_ENABLE_KBD_PORT : KBD_DISABLE_KBD_PORT) |
| 1054 | | ((intr) ? KBD_ENABLE_KBD_INT : KBD_DISABLE_KBD_INT))) |
| 1055 | return 1; |
| 1056 | return 0; |
| 1057 | } |
| 1058 | |
| 1059 | static int |
| 1060 | get_kbd_echo(KBDC kbdc) |
| 1061 | { |
| 1062 | /* enable the keyboard port, but disable the keyboard intr. */ |
| 1063 | if (setup_kbd_port(kbdc, TRUE, FALSE)) |
| 1064 | /* CONTROLLER ERROR: there is very little we can do... */ |
| 1065 | return ENXIO; |
| 1066 | |
| 1067 | /* see if something is present */ |
| 1068 | write_kbd_command(kbdc, KBDC_ECHO); |
| 1069 | if (read_kbd_data(kbdc) != KBD_ECHO) { |
| 1070 | empty_both_buffers(kbdc, 10); |
| 1071 | test_controller(kbdc); |
| 1072 | test_kbd_port(kbdc); |
| 1073 | return ENXIO; |
| 1074 | } |
| 1075 | |
| 1076 | /* enable the keyboard port and intr. */ |
| 1077 | if (setup_kbd_port(kbdc, TRUE, TRUE)) { |
| 1078 | /* |
| 1079 | * CONTROLLER ERROR |
| 1080 | * This is serious; the keyboard intr is left disabled! |
| 1081 | */ |
| 1082 | return ENXIO; |
| 1083 | } |
| 1084 | |
| 1085 | return 0; |
| 1086 | } |
| 1087 | |
| 1088 | static int |
| 1089 | probe_keyboard(KBDC kbdc, int flags) |
| 1090 | { |
| 1091 | /* |
| 1092 | * Don't try to print anything in this function. The low-level |
| 1093 | * console may not have been initialized yet... |
| 1094 | */ |
| 1095 | int err; |
| 1096 | int c; |
| 1097 | int m; |
| 1098 | |
| 1099 | if (!kbdc_lock(kbdc, TRUE)) { |
| 1100 | /* driver error? */ |
| 1101 | return ENXIO; |
| 1102 | } |
| 1103 | |
| 1104 | /* temporarily block data transmission from the keyboard */ |
| 1105 | write_controller_command(kbdc, KBDC_DISABLE_KBD_PORT); |
| 1106 | |
| 1107 | /* flush any noise in the buffer */ |
| 1108 | empty_both_buffers(kbdc, 100); |
| 1109 | |
| 1110 | /* save the current keyboard controller command byte */ |
| 1111 | m = kbdc_get_device_mask(kbdc) & ~KBD_KBD_CONTROL_BITS; |
| 1112 | c = get_controller_command_byte(kbdc); |
| 1113 | if (c == -1) { |
| 1114 | /* CONTROLLER ERROR */ |
| 1115 | kbdc_set_device_mask(kbdc, m); |
| 1116 | kbdc_lock(kbdc, FALSE); |
| 1117 | return ENXIO; |
| 1118 | } |
| 1119 | |
| 1120 | /* |
| 1121 | * The keyboard may have been screwed up by the boot block. |
| 1122 | * We may just be able to recover from error by testing the controller |
| 1123 | * and the keyboard port. The controller command byte needs to be |
| 1124 | * saved before this recovery operation, as some controllers seem |
| 1125 | * to set the command byte to particular values. |
| 1126 | */ |
| 1127 | test_controller(kbdc); |
| 1128 | test_kbd_port(kbdc); |
| 1129 | |
| 1130 | err = get_kbd_echo(kbdc); |
| 1131 | |
| 1132 | /* |
| 1133 | * Even if the keyboard doesn't seem to be present (err != 0), |
| 1134 | * we shall enable the keyboard port and interrupt so that |
| 1135 | * the driver will be operable when the keyboard is attached |
| 1136 | * to the system later. It is NOT recommended to hot-plug |
| 1137 | * the AT keyboard, but many people do so... |
| 1138 | */ |
| 1139 | kbdc_set_device_mask(kbdc, m | KBD_KBD_CONTROL_BITS); |
| 1140 | setup_kbd_port(kbdc, TRUE, TRUE); |
| 1141 | #if 0 |
| 1142 | if (err == 0) { |
| 1143 | kbdc_set_device_mask(kbdc, m | KBD_KBD_CONTROL_BITS); |
| 1144 | } else { |
| 1145 | /* try to restore the command byte as before */ |
| 1146 | set_controller_command_byte(kbdc, 0xff, c); |
| 1147 | kbdc_set_device_mask(kbdc, m); |
| 1148 | } |
| 1149 | #endif |
| 1150 | |
| 1151 | kbdc_lock(kbdc, FALSE); |
| 1152 | return err; |
| 1153 | } |
| 1154 | |
| 1155 | static int |
| 1156 | init_keyboard(KBDC kbdc, int *type, int flags) |
| 1157 | { |
| 1158 | int codeset; |
| 1159 | int id; |
| 1160 | int c; |
| 1161 | |
| 1162 | if (!kbdc_lock(kbdc, TRUE)) { |
| 1163 | /* driver error? */ |
| 1164 | return EIO; |
| 1165 | } |
| 1166 | |
| 1167 | /* temporarily block data transmission from the keyboard */ |
| 1168 | write_controller_command(kbdc, KBDC_DISABLE_KBD_PORT); |
| 1169 | |
| 1170 | /* save the current controller command byte */ |
| 1171 | empty_both_buffers(kbdc, 200); |
| 1172 | c = get_controller_command_byte(kbdc); |
| 1173 | if (c == -1) { |
| 1174 | /* CONTROLLER ERROR */ |
| 1175 | kbdc_lock(kbdc, FALSE); |
| 1176 | kprintf("atkbd: unable to get the current command byte value.\n"); |
| 1177 | return EIO; |
| 1178 | } |
| 1179 | if (bootverbose) |
| 1180 | kprintf("atkbd: the current kbd controller command byte %04x\n", |
| 1181 | c); |
| 1182 | #if 0 |
| 1183 | /* override the keyboard lock switch */ |
| 1184 | c |= KBD_OVERRIDE_KBD_LOCK; |
| 1185 | #endif |
| 1186 | |
| 1187 | /* enable the keyboard port, but disable the keyboard intr. */ |
| 1188 | if (setup_kbd_port(kbdc, TRUE, FALSE)) { |
| 1189 | /* CONTROLLER ERROR: there is very little we can do... */ |
| 1190 | kprintf("atkbd: unable to set the command byte.\n"); |
| 1191 | kbdc_lock(kbdc, FALSE); |
| 1192 | return EIO; |
| 1193 | } |
| 1194 | |
| 1195 | /* |
| 1196 | * Check if we have an XT keyboard before we attempt to reset it. |
| 1197 | * The procedure assumes that the keyboard and the controller have |
| 1198 | * been set up properly by BIOS and have not been messed up |
| 1199 | * during the boot process. |
| 1200 | */ |
| 1201 | codeset = -1; |
| 1202 | if (flags & KB_CONF_ALT_SCANCODESET) |
| 1203 | /* the user says there is a XT keyboard */ |
| 1204 | codeset = 1; |
| 1205 | #ifdef KBD_DETECT_XT_KEYBOARD |
| 1206 | else if ((c & KBD_TRANSLATION) == 0) { |
| 1207 | /* SET_SCANCODE_SET is not always supported; ignore error */ |
| 1208 | if (send_kbd_command_and_data(kbdc, KBDC_SET_SCANCODE_SET, 0) |
| 1209 | == KBD_ACK) |
| 1210 | codeset = read_kbd_data(kbdc); |
| 1211 | } |
| 1212 | if (bootverbose) |
| 1213 | kprintf("atkbd: scancode set %d\n", codeset); |
| 1214 | #endif /* KBD_DETECT_XT_KEYBOARD */ |
| 1215 | |
| 1216 | *type = KB_OTHER; |
| 1217 | id = get_kbd_id(kbdc); |
| 1218 | switch(id) { |
| 1219 | case 0x41ab: /* 101/102/... Enhanced */ |
| 1220 | case 0x83ab: /* ditto */ |
| 1221 | case 0x54ab: /* SpaceSaver */ |
| 1222 | case 0x84ab: /* ditto */ |
| 1223 | #if 0 |
| 1224 | case 0x90ab: /* 'G' */ |
| 1225 | case 0x91ab: /* 'P' */ |
| 1226 | case 0x92ab: /* 'A' */ |
| 1227 | #endif |
| 1228 | *type = KB_101; |
| 1229 | break; |
| 1230 | case -1: /* AT 84 keyboard doesn't return ID */ |
| 1231 | *type = KB_84; |
| 1232 | break; |
| 1233 | default: |
| 1234 | break; |
| 1235 | } |
| 1236 | if (bootverbose) |
| 1237 | kprintf("atkbd: keyboard ID 0x%x (%d)\n", id, *type); |
| 1238 | |
| 1239 | /* reset keyboard hardware */ |
| 1240 | if (!(flags & KB_CONF_NO_RESET) && !reset_kbd(kbdc)) { |
| 1241 | /* |
| 1242 | * KEYBOARD ERROR |
| 1243 | * Keyboard reset may fail either because the keyboard |
| 1244 | * doen't exist, or because the keyboard doesn't pass |
| 1245 | * the self-test, or the keyboard controller on the |
| 1246 | * motherboard and the keyboard somehow fail to shake hands. |
| 1247 | * It is just possible, particularly in the last case, |
| 1248 | * that the keyoard controller may be left in a hung state. |
| 1249 | * test_controller() and test_kbd_port() appear to bring |
| 1250 | * the keyboard controller back (I don't know why and how, |
| 1251 | * though.) |
| 1252 | */ |
| 1253 | empty_both_buffers(kbdc, 10); |
| 1254 | test_controller(kbdc); |
| 1255 | test_kbd_port(kbdc); |
| 1256 | /* |
| 1257 | * We could disable the keyboard port and interrupt... but, |
| 1258 | * the keyboard may still exist (see above). |
| 1259 | */ |
| 1260 | set_controller_command_byte(kbdc, 0xff, c); |
| 1261 | kbdc_lock(kbdc, FALSE); |
| 1262 | if (bootverbose) |
| 1263 | kprintf("atkbd: failed to reset the keyboard.\n"); |
| 1264 | return EIO; |
| 1265 | } |
| 1266 | |
| 1267 | /* |
| 1268 | * Allow us to set the XT_KEYBD flag in UserConfig so that keyboards |
| 1269 | * such as those on the IBM ThinkPad laptop computers can be used |
| 1270 | * with the standard console driver. |
| 1271 | */ |
| 1272 | if (codeset == 1) { |
| 1273 | if (send_kbd_command_and_data(kbdc, |
| 1274 | KBDC_SET_SCANCODE_SET, codeset) == KBD_ACK) { |
| 1275 | /* XT kbd doesn't need scan code translation */ |
| 1276 | c &= ~KBD_TRANSLATION; |
| 1277 | } else { |
| 1278 | /* |
| 1279 | * KEYBOARD ERROR |
| 1280 | * The XT kbd isn't usable unless the proper scan |
| 1281 | * code set is selected. |
| 1282 | */ |
| 1283 | set_controller_command_byte(kbdc, 0xff, c); |
| 1284 | kbdc_lock(kbdc, FALSE); |
| 1285 | kprintf("atkbd: unable to set the XT keyboard mode.\n"); |
| 1286 | return EIO; |
| 1287 | } |
| 1288 | } |
| 1289 | |
| 1290 | /* enable the keyboard port and intr. */ |
| 1291 | if (!set_controller_command_byte(kbdc, |
| 1292 | KBD_KBD_CONTROL_BITS | KBD_TRANSLATION | KBD_OVERRIDE_KBD_LOCK, |
| 1293 | (c & (KBD_TRANSLATION | KBD_OVERRIDE_KBD_LOCK)) |
| 1294 | | KBD_ENABLE_KBD_PORT | KBD_ENABLE_KBD_INT)) { |
| 1295 | /* |
| 1296 | * CONTROLLER ERROR |
| 1297 | * This is serious; we are left with the disabled |
| 1298 | * keyboard intr. |
| 1299 | */ |
| 1300 | set_controller_command_byte(kbdc, 0xff, c); |
| 1301 | kbdc_lock(kbdc, FALSE); |
| 1302 | kprintf("atkbd: unable to enable the keyboard port and intr.\n"); |
| 1303 | return EIO; |
| 1304 | } |
| 1305 | |
| 1306 | kbdc_lock(kbdc, FALSE); |
| 1307 | return 0; |
| 1308 | } |
| 1309 | |
| 1310 | static int |
| 1311 | write_kbd(KBDC kbdc, int command, int data) |
| 1312 | { |
| 1313 | /* prevent the timeout routine from polling the keyboard */ |
| 1314 | if (!kbdc_lock(kbdc, TRUE)) |
| 1315 | return EBUSY; |
| 1316 | |
| 1317 | /* disable the keyboard and mouse interrupt */ |
| 1318 | crit_enter(); |
| 1319 | #if 0 |
| 1320 | c = get_controller_command_byte(kbdc); |
| 1321 | if ((c == -1) |
| 1322 | || !set_controller_command_byte(kbdc, |
| 1323 | kbdc_get_device_mask(kbdc), |
| 1324 | KBD_DISABLE_KBD_PORT | KBD_DISABLE_KBD_INT |
| 1325 | | KBD_DISABLE_AUX_PORT | KBD_DISABLE_AUX_INT)) { |
| 1326 | /* CONTROLLER ERROR */ |
| 1327 | kbdc_lock(kbdc, FALSE); |
| 1328 | crit_exit(); |
| 1329 | return EIO; |
| 1330 | } |
| 1331 | /* |
| 1332 | * Now that the keyboard controller is told not to generate |
| 1333 | * the keyboard and mouse interrupts, call `splx()' to allow |
| 1334 | * the other tty interrupts. The clock interrupt may also occur, |
| 1335 | * but the timeout routine (`scrn_timer()') will be blocked |
| 1336 | * by the lock flag set via `kbdc_lock()' |
| 1337 | */ |
| 1338 | crit_exit(); |
| 1339 | #endif |
| 1340 | |
| 1341 | if (send_kbd_command_and_data(kbdc, command, data) != KBD_ACK) |
| 1342 | send_kbd_command(kbdc, KBDC_ENABLE_KBD); |
| 1343 | |
| 1344 | #if 0 |
| 1345 | /* restore the interrupts */ |
| 1346 | if (!set_controller_command_byte(kbdc, |
| 1347 | kbdc_get_device_mask(kbdc), |
| 1348 | c & (KBD_KBD_CONTROL_BITS | KBD_AUX_CONTROL_BITS))) { |
| 1349 | /* CONTROLLER ERROR */ |
| 1350 | } |
| 1351 | #else |
| 1352 | crit_exit(); |
| 1353 | #endif |
| 1354 | kbdc_lock(kbdc, FALSE); |
| 1355 | |
| 1356 | return 0; |
| 1357 | } |
| 1358 | |
| 1359 | static int |
| 1360 | get_kbd_id(KBDC kbdc) |
| 1361 | { |
| 1362 | int id1, id2; |
| 1363 | |
| 1364 | empty_both_buffers(kbdc, 10); |
| 1365 | id1 = id2 = -1; |
| 1366 | if (send_kbd_command(kbdc, KBDC_SEND_DEV_ID) != KBD_ACK) |
| 1367 | return -1; |
| 1368 | |
| 1369 | DELAY(10000); /* 10 msec delay */ |
| 1370 | id1 = read_kbd_data(kbdc); |
| 1371 | if (id1 != -1) |
| 1372 | id2 = read_kbd_data(kbdc); |
| 1373 | |
| 1374 | if ((id1 == -1) || (id2 == -1)) { |
| 1375 | empty_both_buffers(kbdc, 10); |
| 1376 | test_controller(kbdc); |
| 1377 | test_kbd_port(kbdc); |
| 1378 | return -1; |
| 1379 | } |
| 1380 | return ((id2 << 8) | id1); |
| 1381 | } |
| 1382 | |
| 1383 | static int delays[] = { 250, 500, 750, 1000 }; |
| 1384 | static int rates[] = { 34, 38, 42, 46, 50, 55, 59, 63, |
| 1385 | 68, 76, 84, 92, 100, 110, 118, 126, |
| 1386 | 136, 152, 168, 184, 200, 220, 236, 252, |
| 1387 | 272, 304, 336, 368, 400, 440, 472, 504 }; |
| 1388 | |
| 1389 | static int |
| 1390 | typematic_delay(int i) |
| 1391 | { |
| 1392 | return delays[(i >> 5) & 3]; |
| 1393 | } |
| 1394 | |
| 1395 | static int |
| 1396 | typematic_rate(int i) |
| 1397 | { |
| 1398 | return rates[i & 0x1f]; |
| 1399 | } |
| 1400 | |
| 1401 | static int |
| 1402 | typematic(int delay, int rate) |
| 1403 | { |
| 1404 | int value; |
| 1405 | int i; |
| 1406 | |
| 1407 | for (i = NELEM(delays) - 1; i > 0; --i) { |
| 1408 | if (delay >= delays[i]) |
| 1409 | break; |
| 1410 | } |
| 1411 | value = i << 5; |
| 1412 | for (i = NELEM(rates) - 1; i > 0; --i) { |
| 1413 | if (rate >= rates[i]) |
| 1414 | break; |
| 1415 | } |
| 1416 | value |= i; |
| 1417 | return value; |
| 1418 | } |