| 1 | /*- |
| 2 | * (MPSAFE) |
| 3 | * |
| 4 | * Copyright (c) 1999 Kazutaka YOKOTA <yokota@zodiac.mech.utsunomiya-u.ac.jp> |
| 5 | * All rights reserved. |
| 6 | * |
| 7 | * Redistribution and use in source and binary forms, with or without |
| 8 | * modification, are permitted provided that the following conditions |
| 9 | * are met: |
| 10 | * 1. Redistributions of source code must retain the above copyright |
| 11 | * notice, this list of conditions and the following disclaimer as |
| 12 | * the first lines of this file unmodified. |
| 13 | * 2. Redistributions in binary form must reproduce the above copyright |
| 14 | * notice, this list of conditions and the following disclaimer in the |
| 15 | * documentation and/or other materials provided with the distribution. |
| 16 | * |
| 17 | * THIS SOFTWARE IS PROVIDED BY THE AUTHORS ``AS IS'' AND ANY EXPRESS OR |
| 18 | * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
| 19 | * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
| 20 | * IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR ANY DIRECT, INDIRECT, |
| 21 | * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
| 22 | * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
| 23 | * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
| 24 | * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
| 25 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
| 26 | * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| 27 | * |
| 28 | * $FreeBSD: src/sys/dev/kbd/atkbd.c,v 1.25.2.4 2002/04/08 19:21:38 asmodai Exp $ |
| 29 | */ |
| 30 | /* |
| 31 | * NOTE: All locks are handled by the kbd wrappers. |
| 32 | */ |
| 33 | |
| 34 | #include "opt_kbd.h" |
| 35 | #include "opt_atkbd.h" |
| 36 | |
| 37 | #include <sys/param.h> |
| 38 | #include <sys/systm.h> |
| 39 | #include <sys/kernel.h> |
| 40 | #include <sys/bus.h> |
| 41 | #include <sys/proc.h> |
| 42 | #include <sys/malloc.h> |
| 43 | #include <sys/thread2.h> |
| 44 | |
| 45 | #ifdef __i386__ |
| 46 | #include <machine/md_var.h> |
| 47 | #include <machine/psl.h> |
| 48 | #include <machine/vm86.h> |
| 49 | #include <machine/pc/bios.h> |
| 50 | |
| 51 | #include <vm/vm.h> |
| 52 | #include <vm/pmap.h> |
| 53 | #endif /* __i386__ */ |
| 54 | |
| 55 | #include <sys/kbio.h> |
| 56 | #include "kbdreg.h" |
| 57 | #include "atkbdreg.h" |
| 58 | #include "atkbdcreg.h" |
| 59 | |
| 60 | #include <bus/isa/isareg.h> |
| 61 | |
| 62 | static timeout_t atkbd_timeout; |
| 63 | |
| 64 | #if 0 |
| 65 | static int atkbd_setmuxmode(KBDC kbdc, int value, int *mux_version); |
| 66 | #endif |
| 67 | |
| 68 | int |
| 69 | atkbd_probe_unit(int unit, int ctlr, int irq, int flags) |
| 70 | { |
| 71 | keyboard_switch_t *sw; |
| 72 | int args[2]; |
| 73 | int error; |
| 74 | |
| 75 | sw = kbd_get_switch(ATKBD_DRIVER_NAME); |
| 76 | if (sw == NULL) { |
| 77 | return ENXIO; |
| 78 | } |
| 79 | |
| 80 | args[0] = ctlr; |
| 81 | args[1] = irq; |
| 82 | error = (*sw->probe)(unit, args, flags); |
| 83 | |
| 84 | if (error) |
| 85 | return error; |
| 86 | return 0; |
| 87 | } |
| 88 | |
| 89 | int |
| 90 | atkbd_attach_unit(int unit, keyboard_t **kbd, int ctlr, int irq, int flags) |
| 91 | { |
| 92 | keyboard_switch_t *sw; |
| 93 | int args[2]; |
| 94 | int error; |
| 95 | |
| 96 | sw = kbd_get_switch(ATKBD_DRIVER_NAME); |
| 97 | if (sw == NULL) { |
| 98 | return ENXIO; |
| 99 | } |
| 100 | |
| 101 | /* reset, initialize and enable the device */ |
| 102 | args[0] = ctlr; |
| 103 | args[1] = irq; |
| 104 | *kbd = NULL; |
| 105 | error = (*sw->probe)(unit, args, flags); |
| 106 | if (error) { |
| 107 | return error; |
| 108 | } |
| 109 | error = (*sw->init)(unit, kbd, args, flags); |
| 110 | if (error) { |
| 111 | return error; |
| 112 | } |
| 113 | (*sw->enable)(*kbd); |
| 114 | |
| 115 | #ifdef KBD_INSTALL_CDEV |
| 116 | /* attach a virtual keyboard cdev */ |
| 117 | error = kbd_attach(*kbd); |
| 118 | if (error) { |
| 119 | return error; |
| 120 | } |
| 121 | #endif |
| 122 | |
| 123 | /* |
| 124 | * This is a kludge to compensate for lost keyboard interrupts. |
| 125 | * A similar code used to be in syscons. See below. XXX |
| 126 | */ |
| 127 | atkbd_timeout(*kbd); |
| 128 | |
| 129 | if (bootverbose) |
| 130 | (*sw->diag)(*kbd, bootverbose); |
| 131 | |
| 132 | return 0; |
| 133 | } |
| 134 | |
| 135 | static void |
| 136 | atkbd_timeout(void *arg) |
| 137 | { |
| 138 | keyboard_t *kbd; |
| 139 | |
| 140 | /* |
| 141 | * The original text of the following comments are extracted |
| 142 | * from syscons.c (1.287) |
| 143 | * |
| 144 | * With release 2.1 of the Xaccel server, the keyboard is left |
| 145 | * hanging pretty often. Apparently an interrupt from the |
| 146 | * keyboard is lost, and I don't know why (yet). |
| 147 | * This ugly hack calls the low-level interrupt routine if input |
| 148 | * is ready for the keyboard and conveniently hides the problem. XXX |
| 149 | * |
| 150 | * Try removing anything stuck in the keyboard controller; whether |
| 151 | * it's a keyboard scan code or mouse data. The low-level |
| 152 | * interrupt routine doesn't read the mouse data directly, |
| 153 | * but the keyboard controller driver will, as a side effect. |
| 154 | */ |
| 155 | /* |
| 156 | * And here is bde's original comment about this: |
| 157 | * |
| 158 | * This is necessary to handle edge triggered interrupts - if we |
| 159 | * returned when our IRQ is high due to unserviced input, then there |
| 160 | * would be no more keyboard IRQs until the keyboard is reset by |
| 161 | * external powers. |
| 162 | * |
| 163 | * The keyboard apparently unwedges the irq in most cases. |
| 164 | */ |
| 165 | crit_enter(); |
| 166 | kbd = (keyboard_t *)arg; |
| 167 | if (kbd_lock(kbd, TRUE)) { |
| 168 | /* |
| 169 | * We have seen the lock flag is not set. Let's reset |
| 170 | * the flag early, otherwise the LED update routine fails |
| 171 | * which may want the lock during the interrupt routine. |
| 172 | */ |
| 173 | kbd_lock(kbd, FALSE); |
| 174 | if (kbd_check_char(kbd)) |
| 175 | kbd_intr(kbd, NULL); |
| 176 | } |
| 177 | callout_reset(&kbd->kb_atkbd_timeout_ch, hz / 10, atkbd_timeout, arg); |
| 178 | crit_exit(); |
| 179 | } |
| 180 | |
| 181 | /* LOW-LEVEL */ |
| 182 | |
| 183 | #include <machine/limits.h> |
| 184 | #include <machine/clock.h> |
| 185 | |
| 186 | #define ATKBD_DEFAULT 0 |
| 187 | |
| 188 | typedef struct atkbd_state { |
| 189 | KBDC kbdc; /* keyboard controller */ |
| 190 | int ks_mode; /* input mode (K_XLATE,K_RAW,K_CODE) */ |
| 191 | int ks_flags; /* flags */ |
| 192 | #define COMPOSE (1 << 0) |
| 193 | int ks_polling; |
| 194 | int ks_state; /* shift/lock key state */ |
| 195 | int ks_accents; /* accent key index (> 0) */ |
| 196 | u_int ks_composed_char; /* composed char code (> 0) */ |
| 197 | u_char ks_prefix; /* AT scan code prefix */ |
| 198 | } atkbd_state_t; |
| 199 | |
| 200 | /* keyboard driver declaration */ |
| 201 | static int atkbd_configure(int flags); |
| 202 | static kbd_probe_t atkbd_probe; |
| 203 | static kbd_init_t atkbd_init; |
| 204 | static kbd_term_t atkbd_term; |
| 205 | static kbd_intr_t atkbd_intr; |
| 206 | static kbd_test_if_t atkbd_test_if; |
| 207 | static kbd_enable_t atkbd_enable; |
| 208 | static kbd_disable_t atkbd_disable; |
| 209 | static kbd_read_t atkbd_read; |
| 210 | static kbd_check_t atkbd_check; |
| 211 | static kbd_read_char_t atkbd_read_char; |
| 212 | static kbd_check_char_t atkbd_check_char; |
| 213 | static kbd_ioctl_t atkbd_ioctl; |
| 214 | static kbd_lock_t atkbd_lock; |
| 215 | static kbd_clear_state_t atkbd_clear_state; |
| 216 | static kbd_get_state_t atkbd_get_state; |
| 217 | static kbd_set_state_t atkbd_set_state; |
| 218 | static kbd_poll_mode_t atkbd_poll; |
| 219 | |
| 220 | keyboard_switch_t atkbdsw = { |
| 221 | atkbd_probe, |
| 222 | atkbd_init, |
| 223 | atkbd_term, |
| 224 | atkbd_intr, |
| 225 | atkbd_test_if, |
| 226 | atkbd_enable, |
| 227 | atkbd_disable, |
| 228 | atkbd_read, |
| 229 | atkbd_check, |
| 230 | atkbd_read_char, |
| 231 | atkbd_check_char, |
| 232 | atkbd_ioctl, |
| 233 | atkbd_lock, |
| 234 | atkbd_clear_state, |
| 235 | atkbd_get_state, |
| 236 | atkbd_set_state, |
| 237 | genkbd_get_fkeystr, |
| 238 | atkbd_poll, |
| 239 | genkbd_diag, |
| 240 | }; |
| 241 | |
| 242 | KEYBOARD_DRIVER(atkbd, atkbdsw, atkbd_configure); |
| 243 | |
| 244 | /* local functions */ |
| 245 | static int get_typematic(keyboard_t *kbd); |
| 246 | static int setup_kbd_port(KBDC kbdc, int port, int intr); |
| 247 | static int get_kbd_echo(KBDC kbdc); |
| 248 | static int probe_keyboard(KBDC kbdc, int flags); |
| 249 | static int init_keyboard(KBDC kbdc, int *type, int flags); |
| 250 | static int write_kbd(KBDC kbdc, int command, int data); |
| 251 | static int get_kbd_id(KBDC kbdc, int cmd); |
| 252 | static int typematic(int delay, int rate); |
| 253 | static int typematic_delay(int delay); |
| 254 | static int typematic_rate(int rate); |
| 255 | |
| 256 | /* local variables */ |
| 257 | |
| 258 | /* the initial key map, accent map and fkey strings */ |
| 259 | #ifdef ATKBD_DFLT_KEYMAP |
| 260 | #define KBD_DFLT_KEYMAP |
| 261 | #include "atkbdmap.h" |
| 262 | #endif |
| 263 | #include "kbdtables.h" |
| 264 | |
| 265 | /* structures for the default keyboard */ |
| 266 | static keyboard_t default_kbd; |
| 267 | static atkbd_state_t default_kbd_state; |
| 268 | static keymap_t default_keymap; |
| 269 | static accentmap_t default_accentmap; |
| 270 | static fkeytab_t default_fkeytab[NUM_FKEYS]; |
| 271 | |
| 272 | /* |
| 273 | * The back door to the keyboard driver! |
| 274 | * This function is called by the console driver, via the kbdio module, |
| 275 | * to tickle keyboard drivers when the low-level console is being initialized. |
| 276 | * Almost nothing in the kernel has been initialied yet. Try to probe |
| 277 | * keyboards if possible. |
| 278 | * NOTE: because of the way the low-level console is initialized, this routine |
| 279 | * may be called more than once!! |
| 280 | */ |
| 281 | static int |
| 282 | atkbd_configure(int flags) |
| 283 | { |
| 284 | keyboard_t *kbd; |
| 285 | int arg[2]; |
| 286 | int i; |
| 287 | |
| 288 | /* |
| 289 | * Probe the keyboard controller, if not present or if the driver |
| 290 | * is disabled, unregister the keyboard if any. |
| 291 | */ |
| 292 | if (atkbdc_configure() != 0 || |
| 293 | resource_disabled("atkbd", ATKBD_DEFAULT)) { |
| 294 | i = kbd_find_keyboard(ATKBD_DRIVER_NAME, ATKBD_DEFAULT); |
| 295 | if (i >= 0) { |
| 296 | kbd = kbd_get_keyboard(i); |
| 297 | KBD_ALWAYS_LOCK(kbd); |
| 298 | kbd_unregister(kbd); |
| 299 | kbd = NULL; /* huh? */ |
| 300 | } |
| 301 | return 0; |
| 302 | } |
| 303 | |
| 304 | /* XXX: a kludge to obtain the device configuration flags */ |
| 305 | if (resource_int_value("atkbd", ATKBD_DEFAULT, "flags", &i) == 0) |
| 306 | flags |= i; |
| 307 | |
| 308 | /* probe the default keyboard */ |
| 309 | arg[0] = -1; |
| 310 | arg[1] = -1; |
| 311 | kbd = NULL; |
| 312 | if (atkbd_probe(ATKBD_DEFAULT, arg, flags)) { |
| 313 | return 0; |
| 314 | } |
| 315 | if (atkbd_init(ATKBD_DEFAULT, &kbd, arg, flags)) { |
| 316 | return 0; |
| 317 | } |
| 318 | |
| 319 | /* return the number of found keyboards */ |
| 320 | return 1; |
| 321 | } |
| 322 | |
| 323 | /* low-level functions */ |
| 324 | |
| 325 | /* detect a keyboard */ |
| 326 | static int |
| 327 | atkbd_probe(int unit, void *arg, int flags) |
| 328 | { |
| 329 | KBDC kbdc; |
| 330 | int *data = (int *)arg; /* data[0]: controller, data[1]: irq */ |
| 331 | |
| 332 | |
| 333 | if (unit == ATKBD_DEFAULT) { |
| 334 | if (KBD_IS_PROBED(&default_kbd)) { |
| 335 | return 0; |
| 336 | } |
| 337 | } |
| 338 | |
| 339 | kbdc = atkbdc_open(data[0]); |
| 340 | if (kbdc == NULL) { |
| 341 | return ENXIO; |
| 342 | } |
| 343 | if (probe_keyboard(kbdc, flags)) { |
| 344 | if (flags & KB_CONF_FAIL_IF_NO_KBD) { |
| 345 | return ENXIO; |
| 346 | } |
| 347 | } |
| 348 | |
| 349 | return 0; |
| 350 | } |
| 351 | |
| 352 | /* reset and initialize the device */ |
| 353 | static int |
| 354 | atkbd_init(int unit, keyboard_t **kbdp, void *arg, int flags) |
| 355 | { |
| 356 | keyboard_t *kbd; |
| 357 | atkbd_state_t *state; |
| 358 | keymap_t *keymap; |
| 359 | accentmap_t *accmap; |
| 360 | fkeytab_t *fkeymap; |
| 361 | int fkeymap_size; |
| 362 | int delay[2]; |
| 363 | int *data = (int *)arg; /* data[0]: controller, data[1]: irq */ |
| 364 | |
| 365 | /* XXX */ |
| 366 | if (unit == ATKBD_DEFAULT) { |
| 367 | *kbdp = kbd = &default_kbd; |
| 368 | if (KBD_IS_INITIALIZED(kbd) && KBD_IS_CONFIGURED(kbd)) { |
| 369 | return 0; |
| 370 | } |
| 371 | state = &default_kbd_state; |
| 372 | keymap = &default_keymap; |
| 373 | accmap = &default_accentmap; |
| 374 | fkeymap = default_fkeytab; |
| 375 | fkeymap_size = NELEM(default_fkeytab); |
| 376 | } else if (*kbdp == NULL) { |
| 377 | *kbdp = kbd = kmalloc(sizeof(*kbd), M_DEVBUF, M_WAITOK|M_ZERO); |
| 378 | state = kmalloc(sizeof(*state), M_DEVBUF, M_WAITOK|M_ZERO); |
| 379 | keymap = kmalloc(sizeof(key_map), M_DEVBUF, M_WAITOK); |
| 380 | accmap = kmalloc(sizeof(accent_map), M_DEVBUF, M_WAITOK); |
| 381 | fkeymap = kmalloc(sizeof(fkey_tab), M_DEVBUF, M_WAITOK); |
| 382 | fkeymap_size = NELEM(fkey_tab); |
| 383 | } else if (KBD_IS_INITIALIZED(*kbdp) && KBD_IS_CONFIGURED(*kbdp)) { |
| 384 | return 0; |
| 385 | } else { |
| 386 | kbd = *kbdp; |
| 387 | state = (atkbd_state_t *)kbd->kb_data; |
| 388 | bzero(state, sizeof(*state)); |
| 389 | keymap = kbd->kb_keymap; |
| 390 | accmap = kbd->kb_accentmap; |
| 391 | fkeymap = kbd->kb_fkeytab; |
| 392 | fkeymap_size = kbd->kb_fkeytab_size; |
| 393 | } |
| 394 | |
| 395 | if (!KBD_IS_PROBED(kbd)) { |
| 396 | state->kbdc = atkbdc_open(data[0]); |
| 397 | if (state->kbdc == NULL) { |
| 398 | return ENXIO; |
| 399 | } |
| 400 | kbd_init_struct(kbd, ATKBD_DRIVER_NAME, KB_OTHER, unit, flags, |
| 401 | KB_PRI_ATKBD, 0, 0); |
| 402 | bcopy(&key_map, keymap, sizeof(key_map)); |
| 403 | bcopy(&accent_map, accmap, sizeof(accent_map)); |
| 404 | bcopy(fkey_tab, fkeymap, |
| 405 | imin(fkeymap_size*sizeof(fkeymap[0]), sizeof(fkey_tab))); |
| 406 | kbd_set_maps(kbd, keymap, accmap, fkeymap, fkeymap_size); |
| 407 | kbd->kb_data = (void *)state; |
| 408 | |
| 409 | if (probe_keyboard(state->kbdc, flags)) { /* shouldn't happen */ |
| 410 | if (flags & KB_CONF_FAIL_IF_NO_KBD) { |
| 411 | return ENXIO; |
| 412 | } |
| 413 | } else { |
| 414 | KBD_FOUND_DEVICE(kbd); |
| 415 | } |
| 416 | atkbd_clear_state(kbd); |
| 417 | state->ks_mode = K_XLATE; |
| 418 | /* |
| 419 | * FIXME: set the initial value for lock keys in ks_state |
| 420 | * according to the BIOS data? |
| 421 | */ |
| 422 | KBD_PROBE_DONE(kbd); |
| 423 | } |
| 424 | if (!KBD_IS_INITIALIZED(kbd) && !(flags & KB_CONF_PROBE_ONLY)) { |
| 425 | kbd->kb_config = flags & ~KB_CONF_PROBE_ONLY; |
| 426 | if (!KBD_HAS_DEVICE(kbd) |
| 427 | && init_keyboard(state->kbdc, &kbd->kb_type, kbd->kb_config) |
| 428 | && (kbd->kb_config & KB_CONF_FAIL_IF_NO_KBD)) { |
| 429 | return ENXIO; |
| 430 | } |
| 431 | atkbd_ioctl(kbd, KDSETLED, (caddr_t)&state->ks_state); |
| 432 | get_typematic(kbd); |
| 433 | delay[0] = kbd->kb_delay1; |
| 434 | delay[1] = kbd->kb_delay2; |
| 435 | atkbd_ioctl(kbd, KDSETREPEAT, (caddr_t)delay); |
| 436 | KBD_FOUND_DEVICE(kbd); |
| 437 | KBD_INIT_DONE(kbd); |
| 438 | } |
| 439 | if (!KBD_IS_CONFIGURED(kbd)) { |
| 440 | if (kbd_register(kbd) < 0) { |
| 441 | return ENXIO; |
| 442 | } |
| 443 | KBD_CONFIG_DONE(kbd); |
| 444 | } |
| 445 | |
| 446 | return 0; |
| 447 | } |
| 448 | |
| 449 | /* finish using this keyboard */ |
| 450 | static int |
| 451 | atkbd_term(keyboard_t *kbd) |
| 452 | { |
| 453 | kbd_unregister(kbd); |
| 454 | return 0; |
| 455 | } |
| 456 | |
| 457 | /* keyboard interrupt routine */ |
| 458 | static int |
| 459 | atkbd_intr(keyboard_t *kbd, void *arg) |
| 460 | { |
| 461 | atkbd_state_t *state; |
| 462 | int delay[2]; |
| 463 | int c; |
| 464 | |
| 465 | if (KBD_IS_ACTIVE(kbd) && KBD_IS_BUSY(kbd)) { |
| 466 | /* let the callback function to process the input */ |
| 467 | (*kbd->kb_callback.kc_func)(kbd, KBDIO_KEYINPUT, |
| 468 | kbd->kb_callback.kc_arg); |
| 469 | } else { |
| 470 | /* read and discard the input; no one is waiting for input */ |
| 471 | do { |
| 472 | c = atkbd_read_char(kbd, FALSE); |
| 473 | } while (c != NOKEY); |
| 474 | |
| 475 | if (!KBD_HAS_DEVICE(kbd)) { |
| 476 | /* |
| 477 | * The keyboard was not detected before; |
| 478 | * it must have been reconnected! |
| 479 | */ |
| 480 | state = (atkbd_state_t *)kbd->kb_data; |
| 481 | init_keyboard(state->kbdc, &kbd->kb_type, |
| 482 | kbd->kb_config); |
| 483 | atkbd_ioctl(kbd, KDSETLED, (caddr_t)&state->ks_state); |
| 484 | get_typematic(kbd); |
| 485 | delay[0] = kbd->kb_delay1; |
| 486 | delay[1] = kbd->kb_delay2; |
| 487 | atkbd_ioctl(kbd, KDSETREPEAT, (caddr_t)delay); |
| 488 | KBD_FOUND_DEVICE(kbd); |
| 489 | } |
| 490 | } |
| 491 | |
| 492 | return 0; |
| 493 | } |
| 494 | |
| 495 | /* test the interface to the device */ |
| 496 | static int |
| 497 | atkbd_test_if(keyboard_t *kbd) |
| 498 | { |
| 499 | int error; |
| 500 | |
| 501 | error = 0; |
| 502 | empty_both_buffers(((atkbd_state_t *)kbd->kb_data)->kbdc, 10); |
| 503 | crit_enter(); |
| 504 | if (!test_controller(((atkbd_state_t *)kbd->kb_data)->kbdc)) |
| 505 | error = EIO; |
| 506 | else if (test_kbd_port(((atkbd_state_t *)kbd->kb_data)->kbdc) != 0) |
| 507 | error = EIO; |
| 508 | crit_exit(); |
| 509 | |
| 510 | return error; |
| 511 | } |
| 512 | |
| 513 | /* |
| 514 | * Enable the access to the device; until this function is called, |
| 515 | * the client cannot read from the keyboard. |
| 516 | */ |
| 517 | static int |
| 518 | atkbd_enable(keyboard_t *kbd) |
| 519 | { |
| 520 | crit_enter(); |
| 521 | KBD_ACTIVATE(kbd); |
| 522 | crit_exit(); |
| 523 | return 0; |
| 524 | } |
| 525 | |
| 526 | /* disallow the access to the device */ |
| 527 | static int |
| 528 | atkbd_disable(keyboard_t *kbd) |
| 529 | { |
| 530 | crit_enter(); |
| 531 | KBD_DEACTIVATE(kbd); |
| 532 | crit_exit(); |
| 533 | return 0; |
| 534 | } |
| 535 | |
| 536 | /* read one byte from the keyboard if it's allowed */ |
| 537 | static int |
| 538 | atkbd_read(keyboard_t *kbd, int wait) |
| 539 | { |
| 540 | int c, ret; |
| 541 | |
| 542 | if (wait) |
| 543 | c = read_kbd_data(((atkbd_state_t *)kbd->kb_data)->kbdc); |
| 544 | else |
| 545 | c = read_kbd_data_no_wait(((atkbd_state_t *)kbd->kb_data)->kbdc); |
| 546 | if (c != -1) |
| 547 | ++kbd->kb_count; |
| 548 | |
| 549 | ret = (KBD_IS_ACTIVE(kbd) ? c : -1); |
| 550 | |
| 551 | return ret; |
| 552 | } |
| 553 | |
| 554 | /* check if data is waiting */ |
| 555 | static int |
| 556 | atkbd_check(keyboard_t *kbd) |
| 557 | { |
| 558 | int ret; |
| 559 | |
| 560 | if (!KBD_IS_ACTIVE(kbd)) { |
| 561 | return FALSE; |
| 562 | } |
| 563 | ret = kbdc_data_ready(((atkbd_state_t *)kbd->kb_data)->kbdc); |
| 564 | |
| 565 | return ret; |
| 566 | } |
| 567 | |
| 568 | /* read char from the keyboard */ |
| 569 | static u_int |
| 570 | atkbd_read_char(keyboard_t *kbd, int wait) |
| 571 | { |
| 572 | atkbd_state_t *state; |
| 573 | u_int action; |
| 574 | int scancode; |
| 575 | int keycode; |
| 576 | |
| 577 | state = (atkbd_state_t *)kbd->kb_data; |
| 578 | next_code: |
| 579 | /* do we have a composed char to return? */ |
| 580 | if (!(state->ks_flags & COMPOSE) && (state->ks_composed_char > 0)) { |
| 581 | action = state->ks_composed_char; |
| 582 | state->ks_composed_char = 0; |
| 583 | if (action > UCHAR_MAX) { |
| 584 | return ERRKEY; |
| 585 | } |
| 586 | return action; |
| 587 | } |
| 588 | |
| 589 | /* see if there is something in the keyboard port */ |
| 590 | if (wait) { |
| 591 | do { |
| 592 | scancode = read_kbd_data(state->kbdc); |
| 593 | } while (scancode == -1); |
| 594 | } else { |
| 595 | scancode = read_kbd_data_no_wait(state->kbdc); |
| 596 | if (scancode == -1) { |
| 597 | return NOKEY; |
| 598 | } |
| 599 | } |
| 600 | ++kbd->kb_count; |
| 601 | |
| 602 | #if KBDIO_DEBUG >= 10 |
| 603 | kprintf("atkbd_read_char(): scancode:0x%x\n", scancode); |
| 604 | #endif |
| 605 | |
| 606 | /* return the byte as is for the K_RAW mode */ |
| 607 | if (state->ks_mode == K_RAW) { |
| 608 | return scancode; |
| 609 | } |
| 610 | |
| 611 | /* translate the scan code into a keycode */ |
| 612 | keycode = scancode & 0x7F; |
| 613 | switch (state->ks_prefix) { |
| 614 | case 0x00: /* normal scancode */ |
| 615 | switch(scancode) { |
| 616 | case 0xB8: /* left alt (compose key) released */ |
| 617 | if (state->ks_flags & COMPOSE) { |
| 618 | state->ks_flags &= ~COMPOSE; |
| 619 | if (state->ks_composed_char > UCHAR_MAX) |
| 620 | state->ks_composed_char = 0; |
| 621 | } |
| 622 | break; |
| 623 | case 0x38: /* left alt (compose key) pressed */ |
| 624 | if (!(state->ks_flags & COMPOSE)) { |
| 625 | state->ks_flags |= COMPOSE; |
| 626 | state->ks_composed_char = 0; |
| 627 | } |
| 628 | break; |
| 629 | case 0xE0: |
| 630 | case 0xE1: |
| 631 | state->ks_prefix = scancode; |
| 632 | goto next_code; |
| 633 | } |
| 634 | break; |
| 635 | case 0xE0: /* 0xE0 prefix */ |
| 636 | state->ks_prefix = 0; |
| 637 | switch (keycode) { |
| 638 | case 0x1C: /* right enter key */ |
| 639 | keycode = 0x59; |
| 640 | break; |
| 641 | case 0x1D: /* right ctrl key */ |
| 642 | keycode = 0x5A; |
| 643 | break; |
| 644 | case 0x35: /* keypad divide key */ |
| 645 | keycode = 0x5B; |
| 646 | break; |
| 647 | case 0x37: /* print scrn key */ |
| 648 | keycode = 0x5C; |
| 649 | break; |
| 650 | case 0x38: /* right alt key (alt gr) */ |
| 651 | keycode = 0x5D; |
| 652 | break; |
| 653 | case 0x46: /* ctrl-pause/break on AT 101 (see below) */ |
| 654 | keycode = 0x68; |
| 655 | break; |
| 656 | case 0x47: /* grey home key */ |
| 657 | keycode = 0x5E; |
| 658 | break; |
| 659 | case 0x48: /* grey up arrow key */ |
| 660 | keycode = 0x5F; |
| 661 | break; |
| 662 | case 0x49: /* grey page up key */ |
| 663 | keycode = 0x60; |
| 664 | break; |
| 665 | case 0x4B: /* grey left arrow key */ |
| 666 | keycode = 0x61; |
| 667 | break; |
| 668 | case 0x4D: /* grey right arrow key */ |
| 669 | keycode = 0x62; |
| 670 | break; |
| 671 | case 0x4F: /* grey end key */ |
| 672 | keycode = 0x63; |
| 673 | break; |
| 674 | case 0x50: /* grey down arrow key */ |
| 675 | keycode = 0x64; |
| 676 | break; |
| 677 | case 0x51: /* grey page down key */ |
| 678 | keycode = 0x65; |
| 679 | break; |
| 680 | case 0x52: /* grey insert key */ |
| 681 | keycode = 0x66; |
| 682 | break; |
| 683 | case 0x53: /* grey delete key */ |
| 684 | keycode = 0x67; |
| 685 | break; |
| 686 | /* the following 3 are only used on the MS "Natural" keyboard */ |
| 687 | case 0x5b: /* left Window key */ |
| 688 | keycode = 0x69; |
| 689 | break; |
| 690 | case 0x5c: /* right Window key */ |
| 691 | keycode = 0x6a; |
| 692 | break; |
| 693 | case 0x5d: /* menu key */ |
| 694 | keycode = 0x6b; |
| 695 | break; |
| 696 | default: /* ignore everything else */ |
| 697 | goto next_code; |
| 698 | } |
| 699 | break; |
| 700 | case 0xE1: /* 0xE1 prefix */ |
| 701 | /* |
| 702 | * The pause/break key on the 101 keyboard produces: |
| 703 | * E1-1D-45 E1-9D-C5 |
| 704 | * Ctrl-pause/break produces: |
| 705 | * E0-46 E0-C6 (See above.) |
| 706 | */ |
| 707 | state->ks_prefix = 0; |
| 708 | if (keycode == 0x1D) |
| 709 | state->ks_prefix = 0x1D; |
| 710 | goto next_code; |
| 711 | /* NOT REACHED */ |
| 712 | case 0x1D: /* pause / break */ |
| 713 | state->ks_prefix = 0; |
| 714 | if (keycode != 0x45) |
| 715 | goto next_code; |
| 716 | keycode = 0x68; |
| 717 | break; |
| 718 | } |
| 719 | |
| 720 | if (kbd->kb_type == KB_84) { |
| 721 | switch (keycode) { |
| 722 | case 0x37: /* *(numpad)/print screen */ |
| 723 | if (state->ks_flags & SHIFTS) |
| 724 | keycode = 0x5c; /* print screen */ |
| 725 | break; |
| 726 | case 0x45: /* num lock/pause */ |
| 727 | if (state->ks_flags & CTLS) |
| 728 | keycode = 0x68; /* pause */ |
| 729 | break; |
| 730 | case 0x46: /* scroll lock/break */ |
| 731 | if (state->ks_flags & CTLS) |
| 732 | keycode = 0x6c; /* break */ |
| 733 | break; |
| 734 | } |
| 735 | } else if (kbd->kb_type == KB_101) { |
| 736 | switch (keycode) { |
| 737 | case 0x5c: /* print screen */ |
| 738 | if (state->ks_flags & ALTS) |
| 739 | keycode = 0x54; /* sysrq */ |
| 740 | break; |
| 741 | case 0x68: /* pause/break */ |
| 742 | if (state->ks_flags & CTLS) |
| 743 | keycode = 0x6c; /* break */ |
| 744 | break; |
| 745 | } |
| 746 | } |
| 747 | |
| 748 | /* return the key code in the K_CODE mode */ |
| 749 | if (state->ks_mode == K_CODE) { |
| 750 | return (keycode | (scancode & 0x80)); |
| 751 | } |
| 752 | |
| 753 | /* compose a character code */ |
| 754 | if (state->ks_flags & COMPOSE) { |
| 755 | switch (keycode | (scancode & 0x80)) { |
| 756 | /* key pressed, process it */ |
| 757 | case 0x47: case 0x48: case 0x49: /* keypad 7,8,9 */ |
| 758 | state->ks_composed_char *= 10; |
| 759 | state->ks_composed_char += keycode - 0x40; |
| 760 | if (state->ks_composed_char > UCHAR_MAX) |
| 761 | return ERRKEY; |
| 762 | goto next_code; |
| 763 | case 0x4B: case 0x4C: case 0x4D: /* keypad 4,5,6 */ |
| 764 | state->ks_composed_char *= 10; |
| 765 | state->ks_composed_char += keycode - 0x47; |
| 766 | if (state->ks_composed_char > UCHAR_MAX) |
| 767 | return ERRKEY; |
| 768 | goto next_code; |
| 769 | case 0x4F: case 0x50: case 0x51: /* keypad 1,2,3 */ |
| 770 | state->ks_composed_char *= 10; |
| 771 | state->ks_composed_char += keycode - 0x4E; |
| 772 | if (state->ks_composed_char > UCHAR_MAX) |
| 773 | return ERRKEY; |
| 774 | goto next_code; |
| 775 | case 0x52: /* keypad 0 */ |
| 776 | state->ks_composed_char *= 10; |
| 777 | if (state->ks_composed_char > UCHAR_MAX) |
| 778 | return ERRKEY; |
| 779 | goto next_code; |
| 780 | |
| 781 | /* key released, no interest here */ |
| 782 | case 0xC7: case 0xC8: case 0xC9: /* keypad 7,8,9 */ |
| 783 | case 0xCB: case 0xCC: case 0xCD: /* keypad 4,5,6 */ |
| 784 | case 0xCF: case 0xD0: case 0xD1: /* keypad 1,2,3 */ |
| 785 | case 0xD2: /* keypad 0 */ |
| 786 | goto next_code; |
| 787 | |
| 788 | case 0x38: /* left alt key */ |
| 789 | break; |
| 790 | |
| 791 | default: |
| 792 | if (state->ks_composed_char > 0) { |
| 793 | state->ks_flags &= ~COMPOSE; |
| 794 | state->ks_composed_char = 0; |
| 795 | return ERRKEY; |
| 796 | } |
| 797 | break; |
| 798 | } |
| 799 | } |
| 800 | |
| 801 | /* keycode to key action */ |
| 802 | action = genkbd_keyaction(kbd, keycode, scancode & 0x80, |
| 803 | &state->ks_state, &state->ks_accents); |
| 804 | if (action == NOKEY) { |
| 805 | goto next_code; |
| 806 | } else { |
| 807 | return action; |
| 808 | } |
| 809 | } |
| 810 | |
| 811 | /* check if char is waiting */ |
| 812 | static int |
| 813 | atkbd_check_char(keyboard_t *kbd) |
| 814 | { |
| 815 | atkbd_state_t *state; |
| 816 | int ret; |
| 817 | |
| 818 | if (!KBD_IS_ACTIVE(kbd)) { |
| 819 | return FALSE; |
| 820 | } |
| 821 | state = (atkbd_state_t *)kbd->kb_data; |
| 822 | if (!(state->ks_flags & COMPOSE) && (state->ks_composed_char > 0)) { |
| 823 | return TRUE; |
| 824 | } |
| 825 | ret = kbdc_data_ready(state->kbdc); |
| 826 | return ret; |
| 827 | } |
| 828 | |
| 829 | /* some useful control functions */ |
| 830 | static int |
| 831 | atkbd_ioctl(keyboard_t *kbd, u_long cmd, caddr_t arg) |
| 832 | { |
| 833 | /* trasnlate LED_XXX bits into the device specific bits */ |
| 834 | static u_char ledmap[8] = { |
| 835 | 0, 4, 2, 6, 1, 5, 3, 7, |
| 836 | }; |
| 837 | atkbd_state_t *state = kbd->kb_data; |
| 838 | int error; |
| 839 | int i; |
| 840 | |
| 841 | crit_enter(); |
| 842 | |
| 843 | switch (cmd) { |
| 844 | |
| 845 | case KDGKBMODE: /* get keyboard mode */ |
| 846 | *(int *)arg = state->ks_mode; |
| 847 | break; |
| 848 | case KDSKBMODE: /* set keyboard mode */ |
| 849 | switch (*(int *)arg) { |
| 850 | case K_XLATE: |
| 851 | if (state->ks_mode != K_XLATE) { |
| 852 | /* make lock key state and LED state match */ |
| 853 | state->ks_state &= ~LOCK_MASK; |
| 854 | state->ks_state |= KBD_LED_VAL(kbd); |
| 855 | } |
| 856 | /* FALL THROUGH */ |
| 857 | case K_RAW: |
| 858 | case K_CODE: |
| 859 | if (state->ks_mode != *(int *)arg) { |
| 860 | atkbd_clear_state(kbd); |
| 861 | state->ks_mode = *(int *)arg; |
| 862 | } |
| 863 | break; |
| 864 | default: |
| 865 | crit_exit(); |
| 866 | return EINVAL; |
| 867 | } |
| 868 | break; |
| 869 | |
| 870 | case KDGETLED: /* get keyboard LED */ |
| 871 | *(int *)arg = KBD_LED_VAL(kbd); |
| 872 | break; |
| 873 | case KDSETLED: /* set keyboard LED */ |
| 874 | /* NOTE: lock key state in ks_state won't be changed */ |
| 875 | if (*(int *)arg & ~LOCK_MASK) { |
| 876 | crit_exit(); |
| 877 | return EINVAL; |
| 878 | } |
| 879 | i = *(int *)arg; |
| 880 | /* replace CAPS LED with ALTGR LED for ALTGR keyboards */ |
| 881 | if (state->ks_mode == K_XLATE && |
| 882 | kbd->kb_keymap->n_keys > ALTGR_OFFSET) { |
| 883 | if (i & ALKED) |
| 884 | i |= CLKED; |
| 885 | else |
| 886 | i &= ~CLKED; |
| 887 | } |
| 888 | if (KBD_HAS_DEVICE(kbd)) { |
| 889 | error = write_kbd(state->kbdc, KBDC_SET_LEDS, |
| 890 | ledmap[i & LED_MASK]); |
| 891 | if (error) { |
| 892 | crit_exit(); |
| 893 | return error; |
| 894 | } |
| 895 | } |
| 896 | KBD_LED_VAL(kbd) = *(int *)arg; |
| 897 | break; |
| 898 | |
| 899 | case KDGKBSTATE: /* get lock key state */ |
| 900 | *(int *)arg = state->ks_state & LOCK_MASK; |
| 901 | break; |
| 902 | case KDSKBSTATE: /* set lock key state */ |
| 903 | if (*(int *)arg & ~LOCK_MASK) { |
| 904 | crit_exit(); |
| 905 | return EINVAL; |
| 906 | } |
| 907 | state->ks_state &= ~LOCK_MASK; |
| 908 | state->ks_state |= *(int *)arg; |
| 909 | crit_exit(); |
| 910 | /* set LEDs and quit */ |
| 911 | return atkbd_ioctl(kbd, KDSETLED, arg); |
| 912 | |
| 913 | case KDSETREPEAT: /* set keyboard repeat rate (new interface) */ |
| 914 | crit_exit(); |
| 915 | if (!KBD_HAS_DEVICE(kbd)) { |
| 916 | return 0; |
| 917 | } |
| 918 | i = typematic(((int *)arg)[0], ((int *)arg)[1]); |
| 919 | error = write_kbd(state->kbdc, KBDC_SET_TYPEMATIC, i); |
| 920 | if (error == 0) { |
| 921 | kbd->kb_delay1 = typematic_delay(i); |
| 922 | kbd->kb_delay2 = typematic_rate(i); |
| 923 | } |
| 924 | return error; |
| 925 | |
| 926 | case KDSETRAD: /* set keyboard repeat rate (old interface) */ |
| 927 | crit_exit(); |
| 928 | if (!KBD_HAS_DEVICE(kbd)) { |
| 929 | return 0; |
| 930 | } |
| 931 | error = write_kbd(state->kbdc, KBDC_SET_TYPEMATIC, *(int *)arg); |
| 932 | if (error == 0) { |
| 933 | kbd->kb_delay1 = typematic_delay(*(int *)arg); |
| 934 | kbd->kb_delay2 = typematic_rate(*(int *)arg); |
| 935 | } |
| 936 | return error; |
| 937 | |
| 938 | case PIO_KEYMAP: /* set keyboard translation table */ |
| 939 | case PIO_KEYMAPENT: /* set keyboard translation table entry */ |
| 940 | case PIO_DEADKEYMAP: /* set accent key translation table */ |
| 941 | state->ks_accents = 0; |
| 942 | /* FALL THROUGH */ |
| 943 | default: |
| 944 | crit_exit(); |
| 945 | return genkbd_commonioctl(kbd, cmd, arg); |
| 946 | } |
| 947 | |
| 948 | crit_exit(); |
| 949 | return 0; |
| 950 | } |
| 951 | |
| 952 | /* lock the access to the keyboard */ |
| 953 | static int |
| 954 | atkbd_lock(keyboard_t *kbd, int lock) |
| 955 | { |
| 956 | return kbdc_lock(((atkbd_state_t *)kbd->kb_data)->kbdc, lock); |
| 957 | } |
| 958 | |
| 959 | /* clear the internal state of the keyboard */ |
| 960 | static void |
| 961 | atkbd_clear_state(keyboard_t *kbd) |
| 962 | { |
| 963 | atkbd_state_t *state; |
| 964 | |
| 965 | state = (atkbd_state_t *)kbd->kb_data; |
| 966 | state->ks_flags = 0; |
| 967 | state->ks_polling = 0; |
| 968 | state->ks_state &= LOCK_MASK; /* preserve locking key state */ |
| 969 | state->ks_accents = 0; |
| 970 | state->ks_composed_char = 0; |
| 971 | #if 0 |
| 972 | state->ks_prefix = 0; /* XXX */ |
| 973 | #endif |
| 974 | } |
| 975 | |
| 976 | /* save the internal state */ |
| 977 | static int |
| 978 | atkbd_get_state(keyboard_t *kbd, void *buf, size_t len) |
| 979 | { |
| 980 | if (len == 0) |
| 981 | return sizeof(atkbd_state_t); |
| 982 | if (len < sizeof(atkbd_state_t)) |
| 983 | return -1; |
| 984 | |
| 985 | bcopy(kbd->kb_data, buf, sizeof(atkbd_state_t)); |
| 986 | return 0; |
| 987 | } |
| 988 | |
| 989 | /* set the internal state */ |
| 990 | static int |
| 991 | atkbd_set_state(keyboard_t *kbd, void *buf, size_t len) |
| 992 | { |
| 993 | if (len < sizeof(atkbd_state_t)) |
| 994 | return ENOMEM; |
| 995 | if (((atkbd_state_t *)kbd->kb_data)->kbdc |
| 996 | != ((atkbd_state_t *)buf)->kbdc) |
| 997 | return ENOMEM; |
| 998 | bcopy(buf, kbd->kb_data, sizeof(atkbd_state_t)); |
| 999 | return 0; |
| 1000 | } |
| 1001 | |
| 1002 | static int |
| 1003 | atkbd_poll(keyboard_t *kbd, int on) |
| 1004 | { |
| 1005 | atkbd_state_t *state; |
| 1006 | |
| 1007 | state = (atkbd_state_t *)kbd->kb_data; |
| 1008 | crit_enter(); |
| 1009 | if (on) |
| 1010 | state->ks_polling = 1; |
| 1011 | else |
| 1012 | state->ks_polling = 0; |
| 1013 | crit_exit(); |
| 1014 | return 0; |
| 1015 | } |
| 1016 | |
| 1017 | /* local functions */ |
| 1018 | |
| 1019 | static int |
| 1020 | get_typematic(keyboard_t *kbd) |
| 1021 | { |
| 1022 | #ifdef __i386__ |
| 1023 | /* |
| 1024 | * Only some systems allow us to retrieve the keyboard repeat |
| 1025 | * rate previously set via the BIOS... |
| 1026 | */ |
| 1027 | struct vm86frame vmf; |
| 1028 | u_int32_t p; |
| 1029 | |
| 1030 | bzero(&vmf, sizeof(vmf)); |
| 1031 | vmf.vmf_ax = 0xc000; |
| 1032 | vm86_intcall(0x15, &vmf); |
| 1033 | if ((vmf.vmf_eflags & PSL_C) || vmf.vmf_ah) |
| 1034 | return ENODEV; |
| 1035 | p = BIOS_PADDRTOVADDR(((u_int32_t)vmf.vmf_es << 4) + vmf.vmf_bx); |
| 1036 | if ((readb(p + 6) & 0x40) == 0) /* int 16, function 0x09 supported? */ |
| 1037 | return ENODEV; |
| 1038 | vmf.vmf_ax = 0x0900; |
| 1039 | vm86_intcall(0x16, &vmf); |
| 1040 | if ((vmf.vmf_al & 0x08) == 0) /* int 16, function 0x0306 supported? */ |
| 1041 | return ENODEV; |
| 1042 | vmf.vmf_ax = 0x0306; |
| 1043 | vm86_intcall(0x16, &vmf); |
| 1044 | kbd->kb_delay1 = typematic_delay(vmf.vmf_bh << 5); |
| 1045 | kbd->kb_delay2 = typematic_rate(vmf.vmf_bl); |
| 1046 | return 0; |
| 1047 | #else |
| 1048 | return ENODEV; |
| 1049 | #endif /* __i386__ */ |
| 1050 | } |
| 1051 | |
| 1052 | static int |
| 1053 | setup_kbd_port(KBDC kbdc, int port, int intr) |
| 1054 | { |
| 1055 | if (!set_controller_command_byte(kbdc, |
| 1056 | KBD_KBD_CONTROL_BITS, |
| 1057 | ((port) ? KBD_ENABLE_KBD_PORT : KBD_DISABLE_KBD_PORT) |
| 1058 | | ((intr) ? KBD_ENABLE_KBD_INT : KBD_DISABLE_KBD_INT))) |
| 1059 | return 1; |
| 1060 | return 0; |
| 1061 | } |
| 1062 | |
| 1063 | static int |
| 1064 | get_kbd_echo(KBDC kbdc) |
| 1065 | { |
| 1066 | /* enable the keyboard port, but disable the keyboard intr. */ |
| 1067 | if (setup_kbd_port(kbdc, TRUE, FALSE)) |
| 1068 | /* CONTROLLER ERROR: there is very little we can do... */ |
| 1069 | return ENXIO; |
| 1070 | |
| 1071 | /* see if something is present */ |
| 1072 | write_kbd_command(kbdc, KBDC_ECHO); |
| 1073 | if (read_kbd_data(kbdc) != KBD_ECHO) { |
| 1074 | empty_both_buffers(kbdc, 10); |
| 1075 | test_controller(kbdc); |
| 1076 | test_kbd_port(kbdc); |
| 1077 | return ENXIO; |
| 1078 | } |
| 1079 | |
| 1080 | /* enable the keyboard port and intr. */ |
| 1081 | if (setup_kbd_port(kbdc, TRUE, TRUE)) { |
| 1082 | /* |
| 1083 | * CONTROLLER ERROR |
| 1084 | * This is serious; the keyboard intr is left disabled! |
| 1085 | */ |
| 1086 | return ENXIO; |
| 1087 | } |
| 1088 | |
| 1089 | return 0; |
| 1090 | } |
| 1091 | |
| 1092 | static int |
| 1093 | probe_keyboard(KBDC kbdc, int flags) |
| 1094 | { |
| 1095 | /* |
| 1096 | * Don't try to print anything in this function. The low-level |
| 1097 | * console may not have been initialized yet... |
| 1098 | */ |
| 1099 | int err; |
| 1100 | int c; |
| 1101 | int m; |
| 1102 | |
| 1103 | if (!kbdc_lock(kbdc, TRUE)) { |
| 1104 | /* driver error? */ |
| 1105 | return ENXIO; |
| 1106 | } |
| 1107 | |
| 1108 | /* temporarily block data transmission from the keyboard */ |
| 1109 | write_controller_command(kbdc, KBDC_DISABLE_KBD_PORT); |
| 1110 | |
| 1111 | /* flush any noise in the buffer */ |
| 1112 | empty_both_buffers(kbdc, 100); |
| 1113 | |
| 1114 | /* save the current keyboard controller command byte */ |
| 1115 | m = kbdc_get_device_mask(kbdc) & ~KBD_KBD_CONTROL_BITS; |
| 1116 | c = get_controller_command_byte(kbdc); |
| 1117 | if (c == -1) { |
| 1118 | /* CONTROLLER ERROR */ |
| 1119 | kbdc_set_device_mask(kbdc, m); |
| 1120 | kbdc_lock(kbdc, FALSE); |
| 1121 | return ENXIO; |
| 1122 | } |
| 1123 | |
| 1124 | /* |
| 1125 | * The keyboard may have been screwed up by the boot block. |
| 1126 | * We may just be able to recover from error by testing the controller |
| 1127 | * and the keyboard port. The controller command byte needs to be |
| 1128 | * saved before this recovery operation, as some controllers seem |
| 1129 | * to set the command byte to particular values. |
| 1130 | */ |
| 1131 | test_controller(kbdc); |
| 1132 | test_kbd_port(kbdc); |
| 1133 | |
| 1134 | err = get_kbd_echo(kbdc); |
| 1135 | |
| 1136 | /* |
| 1137 | * Even if the keyboard doesn't seem to be present (err != 0), |
| 1138 | * we shall enable the keyboard port and interrupt so that |
| 1139 | * the driver will be operable when the keyboard is attached |
| 1140 | * to the system later. It is NOT recommended to hot-plug |
| 1141 | * the AT keyboard, but many people do so... |
| 1142 | */ |
| 1143 | kbdc_set_device_mask(kbdc, m | KBD_KBD_CONTROL_BITS); |
| 1144 | setup_kbd_port(kbdc, TRUE, TRUE); |
| 1145 | #if 0 |
| 1146 | if (err == 0) { |
| 1147 | kbdc_set_device_mask(kbdc, m | KBD_KBD_CONTROL_BITS); |
| 1148 | } else { |
| 1149 | /* try to restore the command byte as before */ |
| 1150 | set_controller_command_byte(kbdc, 0xff, c); |
| 1151 | kbdc_set_device_mask(kbdc, m); |
| 1152 | } |
| 1153 | #endif |
| 1154 | |
| 1155 | kbdc_lock(kbdc, FALSE); |
| 1156 | return err; |
| 1157 | } |
| 1158 | |
| 1159 | static int |
| 1160 | init_keyboard(KBDC kbdc, int *type, int flags) |
| 1161 | { |
| 1162 | int codeset; |
| 1163 | int id; |
| 1164 | int c; |
| 1165 | int mux_version; |
| 1166 | int mux_mask; |
| 1167 | int mux_val; |
| 1168 | |
| 1169 | if (!kbdc_lock(kbdc, TRUE)) { |
| 1170 | /* driver error? */ |
| 1171 | return EIO; |
| 1172 | } |
| 1173 | |
| 1174 | /* temporarily block data transmission from the keyboard */ |
| 1175 | write_controller_command(kbdc, KBDC_DISABLE_KBD_PORT); |
| 1176 | |
| 1177 | #if 0 |
| 1178 | if (atkbd_setmuxmode(kbdc, 1, &mux_version)) { |
| 1179 | kprintf("atkbd: no mux\n"); |
| 1180 | mux_version = -1; |
| 1181 | } else { |
| 1182 | kprintf("atkbd: mux present version %d\n", mux_version); |
| 1183 | } |
| 1184 | #else |
| 1185 | mux_version = -1; |
| 1186 | #endif |
| 1187 | |
| 1188 | /* save the current controller command byte */ |
| 1189 | empty_both_buffers(kbdc, 200); |
| 1190 | c = get_controller_command_byte(kbdc); |
| 1191 | if (c == -1) { |
| 1192 | /* CONTROLLER ERROR */ |
| 1193 | kbdc_lock(kbdc, FALSE); |
| 1194 | kprintf("atkbd: unable to get the current command byte value.\n"); |
| 1195 | return EIO; |
| 1196 | } |
| 1197 | if (bootverbose) |
| 1198 | kprintf("atkbd: the current kbd controller command byte %04x\n", |
| 1199 | c); |
| 1200 | #if 0 |
| 1201 | /* override the keyboard lock switch */ |
| 1202 | c |= KBD_OVERRIDE_KBD_LOCK; |
| 1203 | #endif |
| 1204 | |
| 1205 | /* enable the keyboard port, but disable the keyboard intr. */ |
| 1206 | if (setup_kbd_port(kbdc, TRUE, FALSE)) { |
| 1207 | /* CONTROLLER ERROR: there is very little we can do... */ |
| 1208 | kprintf("atkbd: unable to set the command byte.\n"); |
| 1209 | kbdc_lock(kbdc, FALSE); |
| 1210 | return EIO; |
| 1211 | } |
| 1212 | |
| 1213 | /* default codeset */ |
| 1214 | codeset = -1; |
| 1215 | |
| 1216 | /* reset keyboard hardware */ |
| 1217 | if (!(flags & KB_CONF_NO_RESET) && !reset_kbd(kbdc)) { |
| 1218 | /* |
| 1219 | * KEYBOARD ERROR |
| 1220 | * Keyboard reset may fail either because the keyboard |
| 1221 | * doen't exist, or because the keyboard doesn't pass |
| 1222 | * the self-test, or the keyboard controller on the |
| 1223 | * motherboard and the keyboard somehow fail to shake hands. |
| 1224 | * It is just possible, particularly in the last case, |
| 1225 | * that the keyoard controller may be left in a hung state. |
| 1226 | * test_controller() and test_kbd_port() appear to bring |
| 1227 | * the keyboard controller back (I don't know why and how, |
| 1228 | * though.) |
| 1229 | */ |
| 1230 | empty_both_buffers(kbdc, 10); |
| 1231 | test_controller(kbdc); |
| 1232 | test_kbd_port(kbdc); |
| 1233 | /* |
| 1234 | * We could disable the keyboard port and interrupt... but, |
| 1235 | * the keyboard may still exist (see above). |
| 1236 | */ |
| 1237 | set_controller_command_byte(kbdc, 0xff, c); |
| 1238 | kbdc_lock(kbdc, FALSE); |
| 1239 | if (bootverbose) |
| 1240 | kprintf("atkbd: failed to reset the keyboard.\n"); |
| 1241 | return EIO; |
| 1242 | } |
| 1243 | |
| 1244 | /* |
| 1245 | * Check if we have an XT keyboard before we attempt to reset it. |
| 1246 | * The procedure assumes that the keyboard and the controller have |
| 1247 | * been set up properly by BIOS and have not been messed up |
| 1248 | * during the boot process. |
| 1249 | */ |
| 1250 | codeset = -1; |
| 1251 | if (flags & KB_CONF_ALT_SCANCODESET) |
| 1252 | /* the user says there is a XT keyboard */ |
| 1253 | codeset = 1; |
| 1254 | #ifdef KBD_DETECT_XT_KEYBOARD |
| 1255 | else if ((c & KBD_TRANSLATION) == 0) { |
| 1256 | /* SET_SCANCODE_SET is not always supported; ignore error */ |
| 1257 | if (send_kbd_command_and_data(kbdc, KBDC_SET_SCANCODE_SET, 0) |
| 1258 | == KBD_ACK) |
| 1259 | codeset = read_kbd_data(kbdc); |
| 1260 | } |
| 1261 | #endif /* KBD_DETECT_XT_KEYBOARD */ |
| 1262 | if (bootverbose) |
| 1263 | kprintf("atkbd: scancode set %d\n", codeset); |
| 1264 | |
| 1265 | /* |
| 1266 | * Get the keyboard id. |
| 1267 | */ |
| 1268 | *type = KB_OTHER; |
| 1269 | id = get_kbd_id(kbdc, ATKBD_CMD_GETID); |
| 1270 | switch(id) { |
| 1271 | case 0x41ab: /* 101/102/... Enhanced */ |
| 1272 | case 0x83ab: /* ditto */ |
| 1273 | case 0x54ab: /* SpaceSaver */ |
| 1274 | case 0x84ab: /* ditto */ |
| 1275 | #if 0 |
| 1276 | case 0x90ab: /* 'G' */ |
| 1277 | case 0x91ab: /* 'P' */ |
| 1278 | case 0x92ab: /* 'A' */ |
| 1279 | #endif |
| 1280 | *type = KB_101; |
| 1281 | break; |
| 1282 | case -1: /* AT 84 keyboard doesn't return ID */ |
| 1283 | *type = KB_84; |
| 1284 | break; |
| 1285 | default: |
| 1286 | break; |
| 1287 | } |
| 1288 | if (bootverbose) |
| 1289 | kprintf("atkbd: keyboard ID 0x%x (%d)\n", id, *type); |
| 1290 | |
| 1291 | /* |
| 1292 | * Allow us to set the XT_KEYBD flag in UserConfig so that keyboards |
| 1293 | * such as those on the IBM ThinkPad laptop computers can be used |
| 1294 | * with the standard console driver. |
| 1295 | */ |
| 1296 | if (codeset == 1) { |
| 1297 | if (send_kbd_command_and_data(kbdc, |
| 1298 | KBDC_SET_SCANCODE_SET, codeset) == KBD_ACK) { |
| 1299 | /* XT kbd doesn't need scan code translation */ |
| 1300 | c &= ~KBD_TRANSLATION; |
| 1301 | } else { |
| 1302 | /* |
| 1303 | * KEYBOARD ERROR |
| 1304 | * The XT kbd isn't usable unless the proper scan |
| 1305 | * code set is selected. |
| 1306 | */ |
| 1307 | set_controller_command_byte(kbdc, 0xff, c); |
| 1308 | kbdc_lock(kbdc, FALSE); |
| 1309 | kprintf("atkbd: unable to set the XT keyboard mode.\n"); |
| 1310 | return EIO; |
| 1311 | } |
| 1312 | } |
| 1313 | |
| 1314 | #if 0 |
| 1315 | if (send_kbd_command_and_data(kbdc, ATKBD_CMD_EX_ENABLE, 0x71) != KBD_ACK) |
| 1316 | kprintf("atkbd: can't CMD_EX_ENABLE\n"); |
| 1317 | |
| 1318 | if (send_kbd_command(kbdc, ATKBD_CMD_SETALL_MB) != KBD_ACK) |
| 1319 | kprintf("atkbd: can't SETALL_MB\n"); |
| 1320 | if (send_kbd_command(kbdc, ATKBD_CMD_SETALL_MBR) != KBD_ACK) |
| 1321 | kprintf("atkbd: can't SETALL_MBR\n"); |
| 1322 | #endif |
| 1323 | #if 0 |
| 1324 | if (send_kbd_command_and_data(kbdc, ATKBD_CMD_SSCANSET, 2) != KBD_ACK) |
| 1325 | kprintf("atkbd: can't SSCANSET\n"); |
| 1326 | if (send_kbd_command_and_data(kbdc, ATKBD_CMD_GSCANSET, 0) != KBD_ACK) |
| 1327 | kprintf("atkbd: can't SSCANSET\n"); |
| 1328 | else |
| 1329 | kprintf("atkbd: scanset %d\n", read_kbd_data(kbdc)); |
| 1330 | #endif |
| 1331 | #if 0 |
| 1332 | kprintf("atkbd: id %04x\n", get_kbd_id(kbdc, ATKBD_CMD_OK_GETID)); |
| 1333 | if (send_kbd_command_and_data(kbdc, ATKBD_CMD_SETLEDS, 0) != KBD_ACK) |
| 1334 | kprintf("atkbd: setleds failed\n"); |
| 1335 | if (send_kbd_command_and_data(kbdc, ATKBD_CMD_SETREP, 255) != KBD_ACK) |
| 1336 | kprintf("atkbd: setrep failed\n"); |
| 1337 | if (send_kbd_command(kbdc, ATKBD_CMD_RESEND) != KBD_ACK) |
| 1338 | kprintf("atkbd: resend failed\n"); |
| 1339 | #endif |
| 1340 | /* |
| 1341 | * Some keyboards require a SETLEDS command to be sent after |
| 1342 | * the reset command before they will send keystrokes to us |
| 1343 | * (Acer C720). |
| 1344 | */ |
| 1345 | if (send_kbd_command_and_data(kbdc, ATKBD_CMD_SETLEDS, 0) != KBD_ACK) |
| 1346 | kprintf("atkbd: setleds failed\n"); |
| 1347 | send_kbd_command(kbdc, ATKBD_CMD_ENABLE); |
| 1348 | |
| 1349 | #if 0 |
| 1350 | /* DEBUGGING */ |
| 1351 | { |
| 1352 | int retry; |
| 1353 | int c; |
| 1354 | kprintf("atkbd: waiting for keypress"); |
| 1355 | for (retry = 0; retry < 10; ++retry) { |
| 1356 | c = read_kbd_data_no_wait(kbdc); |
| 1357 | kprintf(" %d", c); |
| 1358 | tsleep(&c, 0, "wait", hz); |
| 1359 | } |
| 1360 | kprintf("\n"); |
| 1361 | } |
| 1362 | #endif |
| 1363 | |
| 1364 | if (mux_version == -1) { |
| 1365 | mux_mask = 0; |
| 1366 | mux_val = 0; |
| 1367 | } else { |
| 1368 | mux_mask = KBD_AUX_CONTROL_BITS; |
| 1369 | mux_val = 0; |
| 1370 | kprintf("atkbd: setaux for multiplexer\n"); |
| 1371 | } |
| 1372 | |
| 1373 | /* enable the keyboard port and intr. */ |
| 1374 | if (!set_controller_command_byte(kbdc, |
| 1375 | KBD_KBD_CONTROL_BITS | KBD_TRANSLATION | |
| 1376 | KBD_OVERRIDE_KBD_LOCK | mux_mask, |
| 1377 | (c & (KBD_TRANSLATION | KBD_OVERRIDE_KBD_LOCK)) |
| 1378 | | KBD_ENABLE_KBD_PORT | KBD_ENABLE_KBD_INT | mux_val)) { |
| 1379 | /* |
| 1380 | * CONTROLLER ERROR |
| 1381 | * This is serious; we are left with the disabled |
| 1382 | * keyboard intr. |
| 1383 | */ |
| 1384 | set_controller_command_byte(kbdc, 0xff, c); |
| 1385 | kbdc_lock(kbdc, FALSE); |
| 1386 | kprintf("atkbd: unable to enable the keyboard port and intr.\n"); |
| 1387 | return EIO; |
| 1388 | } |
| 1389 | |
| 1390 | kbdc_lock(kbdc, FALSE); |
| 1391 | return 0; |
| 1392 | } |
| 1393 | |
| 1394 | #if 0 |
| 1395 | |
| 1396 | static |
| 1397 | int |
| 1398 | atkbd_setmuxmode(KBDC kbdc, int enable, int *mux_version) |
| 1399 | { |
| 1400 | int param; |
| 1401 | int val; |
| 1402 | int i; |
| 1403 | |
| 1404 | kbdc->mux_active = 0; |
| 1405 | empty_both_buffers(kbdc, 100); |
| 1406 | val = 0xf0; |
| 1407 | if ((param = write_controller_w1r1(kbdc, KBDC_AUX_LOOP, val)) != val) { |
| 1408 | kprintf("setmuxmode: fail1\n"); |
| 1409 | return(-1); |
| 1410 | } |
| 1411 | val = enable ? 0x56 : 0xf6; |
| 1412 | if ((param = write_controller_w1r1(kbdc, KBDC_AUX_LOOP, val)) != val) { |
| 1413 | kprintf("setmuxmode: fail2\n"); |
| 1414 | return(-1); |
| 1415 | } |
| 1416 | val = enable ? 0xa4 : 0xa5; |
| 1417 | if ((param = write_controller_w1r1(kbdc, KBDC_AUX_LOOP, val)) != val) { |
| 1418 | kprintf("setmuxmode: fail3\n"); |
| 1419 | return(-1); |
| 1420 | } |
| 1421 | kprintf("mux version %02x\n", param); |
| 1422 | if (param == 0xac) { |
| 1423 | kprintf("setmuxmode: fail4\n"); |
| 1424 | return(-1); |
| 1425 | } |
| 1426 | |
| 1427 | if (enable) { |
| 1428 | for (i = 0; i < KBD_NUM_MUX_PORTS; ++i) { |
| 1429 | write_controller_command(kbdc, KBDC_MUX_PFX + i); |
| 1430 | write_controller_command(kbdc, KBDC_ENABLE_AUX_PORT); |
| 1431 | |
| 1432 | } |
| 1433 | } |
| 1434 | kbdc->mux_active = 1; |
| 1435 | if (mux_version) |
| 1436 | *mux_version = param; |
| 1437 | return 0; |
| 1438 | } |
| 1439 | |
| 1440 | #endif |
| 1441 | |
| 1442 | static int |
| 1443 | write_kbd(KBDC kbdc, int command, int data) |
| 1444 | { |
| 1445 | /* prevent the timeout routine from polling the keyboard */ |
| 1446 | if (!kbdc_lock(kbdc, TRUE)) |
| 1447 | return EBUSY; |
| 1448 | |
| 1449 | /* disable the keyboard and mouse interrupt */ |
| 1450 | crit_enter(); |
| 1451 | #if 0 |
| 1452 | c = get_controller_command_byte(kbdc); |
| 1453 | if ((c == -1) |
| 1454 | || !set_controller_command_byte(kbdc, |
| 1455 | kbdc_get_device_mask(kbdc), |
| 1456 | KBD_DISABLE_KBD_PORT | KBD_DISABLE_KBD_INT |
| 1457 | | KBD_DISABLE_AUX_PORT | KBD_DISABLE_AUX_INT)) { |
| 1458 | /* CONTROLLER ERROR */ |
| 1459 | kbdc_lock(kbdc, FALSE); |
| 1460 | crit_exit(); |
| 1461 | return EIO; |
| 1462 | } |
| 1463 | /* |
| 1464 | * Now that the keyboard controller is told not to generate |
| 1465 | * the keyboard and mouse interrupts, call `splx()' to allow |
| 1466 | * the other tty interrupts. The clock interrupt may also occur, |
| 1467 | * but the timeout routine (`scrn_timer()') will be blocked |
| 1468 | * by the lock flag set via `kbdc_lock()' |
| 1469 | */ |
| 1470 | crit_exit(); |
| 1471 | #endif |
| 1472 | |
| 1473 | if (send_kbd_command_and_data(kbdc, command, data) != KBD_ACK) |
| 1474 | send_kbd_command(kbdc, KBDC_ENABLE_KBD); |
| 1475 | |
| 1476 | #if 0 |
| 1477 | /* restore the interrupts */ |
| 1478 | if (!set_controller_command_byte(kbdc, |
| 1479 | kbdc_get_device_mask(kbdc), |
| 1480 | c & (KBD_KBD_CONTROL_BITS | KBD_AUX_CONTROL_BITS))) { |
| 1481 | /* CONTROLLER ERROR */ |
| 1482 | } |
| 1483 | #else |
| 1484 | crit_exit(); |
| 1485 | #endif |
| 1486 | kbdc_lock(kbdc, FALSE); |
| 1487 | |
| 1488 | return 0; |
| 1489 | } |
| 1490 | |
| 1491 | static int |
| 1492 | get_kbd_id(KBDC kbdc, int cmd) |
| 1493 | { |
| 1494 | int id1, id2; |
| 1495 | |
| 1496 | empty_both_buffers(kbdc, 10); |
| 1497 | id1 = id2 = -1; |
| 1498 | if (send_kbd_command(kbdc, cmd) != KBD_ACK) |
| 1499 | return -1; |
| 1500 | |
| 1501 | DELAY(10000); /* 10 msec delay */ |
| 1502 | id1 = read_kbd_data(kbdc); |
| 1503 | if (id1 != -1) |
| 1504 | id2 = read_kbd_data(kbdc); |
| 1505 | |
| 1506 | if ((id1 == -1) || (id2 == -1)) { |
| 1507 | empty_both_buffers(kbdc, 10); |
| 1508 | test_controller(kbdc); |
| 1509 | test_kbd_port(kbdc); |
| 1510 | return -1; |
| 1511 | } |
| 1512 | return ((id2 << 8) | id1); |
| 1513 | } |
| 1514 | |
| 1515 | static int delays[] = { 250, 500, 750, 1000 }; |
| 1516 | static int rates[] = { 34, 38, 42, 46, 50, 55, 59, 63, |
| 1517 | 68, 76, 84, 92, 100, 110, 118, 126, |
| 1518 | 136, 152, 168, 184, 200, 220, 236, 252, |
| 1519 | 272, 304, 336, 368, 400, 440, 472, 504 }; |
| 1520 | |
| 1521 | static int |
| 1522 | typematic_delay(int i) |
| 1523 | { |
| 1524 | return delays[(i >> 5) & 3]; |
| 1525 | } |
| 1526 | |
| 1527 | static int |
| 1528 | typematic_rate(int i) |
| 1529 | { |
| 1530 | return rates[i & 0x1f]; |
| 1531 | } |
| 1532 | |
| 1533 | static int |
| 1534 | typematic(int delay, int rate) |
| 1535 | { |
| 1536 | int value; |
| 1537 | int i; |
| 1538 | |
| 1539 | for (i = NELEM(delays) - 1; i > 0; --i) { |
| 1540 | if (delay >= delays[i]) |
| 1541 | break; |
| 1542 | } |
| 1543 | value = i << 5; |
| 1544 | for (i = NELEM(rates) - 1; i > 0; --i) { |
| 1545 | if (rate >= rates[i]) |
| 1546 | break; |
| 1547 | } |
| 1548 | value |= i; |
| 1549 | return value; |
| 1550 | } |