kbd.c revision 122352
1/*- 2 * Copyright (c) 1999 Kazutaka YOKOTA <yokota@zodiac.mech.utsunomiya-u.ac.jp> 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer as 10 * the first lines of this file unmodified. 11 * 2. Redistributions in binary form must reproduce the above copyright 12 * notice, this list of conditions and the following disclaimer in the 13 * documentation and/or other materials provided with the distribution. 14 * 15 * THIS SOFTWARE IS PROVIDED BY THE AUTHORS ``AS IS'' AND ANY EXPRESS OR 16 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 17 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 18 * IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR ANY DIRECT, INDIRECT, 19 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 20 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 21 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 22 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 23 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 24 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 25 * 26 */ 27 28#include <sys/cdefs.h> 29__FBSDID("$FreeBSD: head/sys/dev/kbd/kbd.c 122352 2003-11-09 09:17:26Z tanimura $"); 30 31#include "opt_kbd.h" 32 33#include <sys/param.h> 34#include <sys/systm.h> 35#include <sys/kernel.h> 36#include <sys/malloc.h> 37#include <sys/conf.h> 38#include <sys/tty.h> 39#include <sys/poll.h> 40#include <sys/proc.h> 41#include <sys/sysctl.h> 42#include <sys/vnode.h> 43#include <sys/uio.h> 44 45#include <sys/kbio.h> 46 47#include <dev/kbd/kbdreg.h> 48 49#define KBD_INDEX(dev) minor(dev) 50 51typedef struct genkbd_softc { 52 int gkb_flags; /* flag/status bits */ 53#define KB_ASLEEP (1 << 0) 54 struct clist gkb_q; /* input queue */ 55 struct selinfo gkb_rsel; 56} genkbd_softc_t; 57 58static SLIST_HEAD(, keyboard_driver) keyboard_drivers = 59 SLIST_HEAD_INITIALIZER(keyboard_drivers); 60 61SET_DECLARE(kbddriver_set, const keyboard_driver_t); 62 63/* local arrays */ 64 65/* 66 * We need at least one entry each in order to initialize a keyboard 67 * for the kernel console. The arrays will be increased dynamically 68 * when necessary. 69 */ 70 71static int keyboards = 1; 72static keyboard_t *kbd_ini; 73static keyboard_t **keyboard = &kbd_ini; 74static keyboard_switch_t *kbdsw_ini; 75 keyboard_switch_t **kbdsw = &kbdsw_ini; 76 77static int keymap_restrict_change; 78SYSCTL_NODE(_hw, OID_AUTO, kbd, CTLFLAG_RD, 0, "kbd"); 79SYSCTL_INT(_hw_kbd, OID_AUTO, keymap_restrict_change, CTLFLAG_RW, 80 &keymap_restrict_change, 0, "restrict ability to change keymap"); 81 82#define ARRAY_DELTA 4 83 84static int 85kbd_realloc_array(void) 86{ 87 keyboard_t **new_kbd; 88 keyboard_switch_t **new_kbdsw; 89 int newsize; 90 int s; 91 92 s = spltty(); 93 newsize = ((keyboards + ARRAY_DELTA)/ARRAY_DELTA)*ARRAY_DELTA; 94 new_kbd = malloc(sizeof(*new_kbd)*newsize, M_DEVBUF, M_NOWAIT|M_ZERO); 95 if (new_kbd == NULL) { 96 splx(s); 97 return ENOMEM; 98 } 99 new_kbdsw = malloc(sizeof(*new_kbdsw)*newsize, M_DEVBUF, 100 M_NOWAIT|M_ZERO); 101 if (new_kbdsw == NULL) { 102 free(new_kbd, M_DEVBUF); 103 splx(s); 104 return ENOMEM; 105 } 106 bcopy(keyboard, new_kbd, sizeof(*keyboard)*keyboards); 107 bcopy(kbdsw, new_kbdsw, sizeof(*kbdsw)*keyboards); 108 if (keyboards > 1) { 109 free(keyboard, M_DEVBUF); 110 free(kbdsw, M_DEVBUF); 111 } 112 keyboard = new_kbd; 113 kbdsw = new_kbdsw; 114 keyboards = newsize; 115 splx(s); 116 117 if (bootverbose) 118 printf("kbd: new array size %d\n", keyboards); 119 120 return 0; 121} 122 123/* 124 * Low-level keyboard driver functions 125 * Keyboard subdrivers, such as the AT keyboard driver and the USB keyboard 126 * driver, call these functions to initialize the keyboard_t structure 127 * and register it to the virtual keyboard driver `kbd'. 128 */ 129 130/* initialize the keyboard_t structure */ 131void 132kbd_init_struct(keyboard_t *kbd, char *name, int type, int unit, int config, 133 int port, int port_size) 134{ 135 kbd->kb_flags = KB_NO_DEVICE; /* device has not been found */ 136 kbd->kb_name = name; 137 kbd->kb_type = type; 138 kbd->kb_unit = unit; 139 kbd->kb_config = config & ~KB_CONF_PROBE_ONLY; 140 kbd->kb_led = 0; /* unknown */ 141 kbd->kb_io_base = port; 142 kbd->kb_io_size = port_size; 143 kbd->kb_data = NULL; 144 kbd->kb_keymap = NULL; 145 kbd->kb_accentmap = NULL; 146 kbd->kb_fkeytab = NULL; 147 kbd->kb_fkeytab_size = 0; 148 kbd->kb_delay1 = KB_DELAY1; /* these values are advisory only */ 149 kbd->kb_delay2 = KB_DELAY2; 150 kbd->kb_count = 0L; 151 bzero(kbd->kb_lastact, sizeof(kbd->kb_lastact)); 152} 153 154void 155kbd_set_maps(keyboard_t *kbd, keymap_t *keymap, accentmap_t *accmap, 156 fkeytab_t *fkeymap, int fkeymap_size) 157{ 158 kbd->kb_keymap = keymap; 159 kbd->kb_accentmap = accmap; 160 kbd->kb_fkeytab = fkeymap; 161 kbd->kb_fkeytab_size = fkeymap_size; 162} 163 164/* declare a new keyboard driver */ 165int 166kbd_add_driver(keyboard_driver_t *driver) 167{ 168 if (SLIST_NEXT(driver, link)) 169 return EINVAL; 170 SLIST_INSERT_HEAD(&keyboard_drivers, driver, link); 171 return 0; 172} 173 174int 175kbd_delete_driver(keyboard_driver_t *driver) 176{ 177 SLIST_REMOVE(&keyboard_drivers, driver, keyboard_driver, link); 178 SLIST_NEXT(driver, link) = NULL; 179 return 0; 180} 181 182/* register a keyboard and associate it with a function table */ 183int 184kbd_register(keyboard_t *kbd) 185{ 186 const keyboard_driver_t **list; 187 const keyboard_driver_t *p; 188 int index; 189 190 for (index = 0; index < keyboards; ++index) { 191 if (keyboard[index] == NULL) 192 break; 193 } 194 if (index >= keyboards) { 195 if (kbd_realloc_array()) 196 return -1; 197 } 198 199 kbd->kb_index = index; 200 KBD_UNBUSY(kbd); 201 KBD_VALID(kbd); 202 kbd->kb_active = 0; /* disabled until someone calls kbd_enable() */ 203 kbd->kb_token = NULL; 204 kbd->kb_callback.kc_func = NULL; 205 kbd->kb_callback.kc_arg = NULL; 206 207 SLIST_FOREACH(p, &keyboard_drivers, link) { 208 if (strcmp(p->name, kbd->kb_name) == 0) { 209 keyboard[index] = kbd; 210 kbdsw[index] = p->kbdsw; 211 return index; 212 } 213 } 214 SET_FOREACH(list, kbddriver_set) { 215 p = *list; 216 if (strcmp(p->name, kbd->kb_name) == 0) { 217 keyboard[index] = kbd; 218 kbdsw[index] = p->kbdsw; 219 return index; 220 } 221 } 222 223 return -1; 224} 225 226int 227kbd_unregister(keyboard_t *kbd) 228{ 229 int error; 230 int s; 231 232 if ((kbd->kb_index < 0) || (kbd->kb_index >= keyboards)) 233 return ENOENT; 234 if (keyboard[kbd->kb_index] != kbd) 235 return ENOENT; 236 237 s = spltty(); 238 if (KBD_IS_BUSY(kbd)) { 239 error = (*kbd->kb_callback.kc_func)(kbd, KBDIO_UNLOADING, 240 kbd->kb_callback.kc_arg); 241 if (error) { 242 splx(s); 243 return error; 244 } 245 if (KBD_IS_BUSY(kbd)) { 246 splx(s); 247 return EBUSY; 248 } 249 } 250 KBD_INVALID(kbd); 251 keyboard[kbd->kb_index] = NULL; 252 kbdsw[kbd->kb_index] = NULL; 253 254 splx(s); 255 return 0; 256} 257 258/* find a funciton table by the driver name */ 259keyboard_switch_t 260*kbd_get_switch(char *driver) 261{ 262 const keyboard_driver_t **list; 263 const keyboard_driver_t *p; 264 265 SLIST_FOREACH(p, &keyboard_drivers, link) { 266 if (strcmp(p->name, driver) == 0) 267 return p->kbdsw; 268 } 269 SET_FOREACH(list, kbddriver_set) { 270 p = *list; 271 if (strcmp(p->name, driver) == 0) 272 return p->kbdsw; 273 } 274 275 return NULL; 276} 277 278/* 279 * Keyboard client functions 280 * Keyboard clients, such as the console driver `syscons' and the keyboard 281 * cdev driver, use these functions to claim and release a keyboard for 282 * exclusive use. 283 */ 284 285/* find the keyboard specified by a driver name and a unit number */ 286int 287kbd_find_keyboard(char *driver, int unit) 288{ 289 int i; 290 291 for (i = 0; i < keyboards; ++i) { 292 if (keyboard[i] == NULL) 293 continue; 294 if (!KBD_IS_VALID(keyboard[i])) 295 continue; 296 if (strcmp("*", driver) && strcmp(keyboard[i]->kb_name, driver)) 297 continue; 298 if ((unit != -1) && (keyboard[i]->kb_unit != unit)) 299 continue; 300 return i; 301 } 302 return -1; 303} 304 305/* allocate a keyboard */ 306int 307kbd_allocate(char *driver, int unit, void *id, kbd_callback_func_t *func, 308 void *arg) 309{ 310 int index; 311 int s; 312 313 if (func == NULL) 314 return -1; 315 316 s = spltty(); 317 index = kbd_find_keyboard(driver, unit); 318 if (index >= 0) { 319 if (KBD_IS_BUSY(keyboard[index])) { 320 splx(s); 321 return -1; 322 } 323 keyboard[index]->kb_token = id; 324 KBD_BUSY(keyboard[index]); 325 keyboard[index]->kb_callback.kc_func = func; 326 keyboard[index]->kb_callback.kc_arg = arg; 327 (*kbdsw[index]->clear_state)(keyboard[index]); 328 } 329 splx(s); 330 return index; 331} 332 333int 334kbd_release(keyboard_t *kbd, void *id) 335{ 336 int error; 337 int s; 338 339 s = spltty(); 340 if (!KBD_IS_VALID(kbd) || !KBD_IS_BUSY(kbd)) { 341 error = EINVAL; 342 } else if (kbd->kb_token != id) { 343 error = EPERM; 344 } else { 345 kbd->kb_token = NULL; 346 KBD_UNBUSY(kbd); 347 kbd->kb_callback.kc_func = NULL; 348 kbd->kb_callback.kc_arg = NULL; 349 (*kbdsw[kbd->kb_index]->clear_state)(kbd); 350 error = 0; 351 } 352 splx(s); 353 return error; 354} 355 356int 357kbd_change_callback(keyboard_t *kbd, void *id, kbd_callback_func_t *func, 358 void *arg) 359{ 360 int error; 361 int s; 362 363 s = spltty(); 364 if (!KBD_IS_VALID(kbd) || !KBD_IS_BUSY(kbd)) { 365 error = EINVAL; 366 } else if (kbd->kb_token != id) { 367 error = EPERM; 368 } else if (func == NULL) { 369 error = EINVAL; 370 } else { 371 kbd->kb_callback.kc_func = func; 372 kbd->kb_callback.kc_arg = arg; 373 error = 0; 374 } 375 splx(s); 376 return error; 377} 378 379/* get a keyboard structure */ 380keyboard_t 381*kbd_get_keyboard(int index) 382{ 383 if ((index < 0) || (index >= keyboards)) 384 return NULL; 385 if (keyboard[index] == NULL) 386 return NULL; 387 if (!KBD_IS_VALID(keyboard[index])) 388 return NULL; 389 return keyboard[index]; 390} 391 392/* 393 * The back door for the console driver; configure keyboards 394 * This function is for the kernel console to initialize keyboards 395 * at very early stage. 396 */ 397 398int 399kbd_configure(int flags) 400{ 401 const keyboard_driver_t **list; 402 const keyboard_driver_t *p; 403 404 SLIST_FOREACH(p, &keyboard_drivers, link) { 405 if (p->configure != NULL) 406 (*p->configure)(flags); 407 } 408 SET_FOREACH(list, kbddriver_set) { 409 p = *list; 410 if (p->configure != NULL) 411 (*p->configure)(flags); 412 } 413 414 return 0; 415} 416 417#ifdef KBD_INSTALL_CDEV 418 419/* 420 * Virtual keyboard cdev driver functions 421 * The virtual keyboard driver dispatches driver functions to 422 * appropriate subdrivers. 423 */ 424 425#define KBD_UNIT(dev) minor(dev) 426 427static d_open_t genkbdopen; 428static d_close_t genkbdclose; 429static d_read_t genkbdread; 430static d_write_t genkbdwrite; 431static d_ioctl_t genkbdioctl; 432static d_poll_t genkbdpoll; 433 434#define CDEV_MAJOR 112 435 436static struct cdevsw kbd_cdevsw = { 437 .d_open = genkbdopen, 438 .d_close = genkbdclose, 439 .d_read = genkbdread, 440 .d_write = genkbdwrite, 441 .d_ioctl = genkbdioctl, 442 .d_poll = genkbdpoll, 443 .d_name = "kbd", 444 .d_maj = CDEV_MAJOR, 445}; 446 447int 448kbd_attach(keyboard_t *kbd) 449{ 450 451 if (kbd->kb_index >= keyboards) 452 return EINVAL; 453 if (keyboard[kbd->kb_index] != kbd) 454 return EINVAL; 455 456 kbd->kb_dev = make_dev(&kbd_cdevsw, kbd->kb_index, UID_ROOT, GID_WHEEL, 0600, 457 "kbd%r", kbd->kb_index); 458 kbd->kb_dev->si_drv1 = malloc(sizeof(genkbd_softc_t), M_DEVBUF, 459 M_WAITOK | M_ZERO); 460 printf("kbd%d at %s%d\n", kbd->kb_index, kbd->kb_name, kbd->kb_unit); 461 return 0; 462} 463 464int 465kbd_detach(keyboard_t *kbd) 466{ 467 468 if (kbd->kb_index >= keyboards) 469 return EINVAL; 470 if (keyboard[kbd->kb_index] != kbd) 471 return EINVAL; 472 473 free(kbd->kb_dev->si_drv1, M_DEVBUF); 474 destroy_dev(kbd->kb_dev); 475 476 return 0; 477} 478 479/* 480 * Generic keyboard cdev driver functions 481 * Keyboard subdrivers may call these functions to implement common 482 * driver functions. 483 */ 484 485#define KB_QSIZE 512 486#define KB_BUFSIZE 64 487 488static kbd_callback_func_t genkbd_event; 489 490static int 491genkbdopen(dev_t dev, int mode, int flag, struct thread *td) 492{ 493 keyboard_t *kbd; 494 genkbd_softc_t *sc; 495 int s; 496 int i; 497 498 s = spltty(); 499 sc = dev->si_drv1; 500 kbd = kbd_get_keyboard(KBD_INDEX(dev)); 501 if ((sc == NULL) || (kbd == NULL) || !KBD_IS_VALID(kbd)) { 502 splx(s); 503 return ENXIO; 504 } 505 i = kbd_allocate(kbd->kb_name, kbd->kb_unit, sc, 506 genkbd_event, (void *)sc); 507 if (i < 0) { 508 splx(s); 509 return EBUSY; 510 } 511 /* assert(i == kbd->kb_index) */ 512 /* assert(kbd == kbd_get_keyboard(i)) */ 513 514 /* 515 * NOTE: even when we have successfully claimed a keyboard, 516 * the device may still be missing (!KBD_HAS_DEVICE(kbd)). 517 */ 518 519#if 0 520 bzero(&sc->gkb_q, sizeof(sc->gkb_q)); 521#endif 522 clist_alloc_cblocks(&sc->gkb_q, KB_QSIZE, KB_QSIZE/2); /* XXX */ 523 splx(s); 524 525 return 0; 526} 527 528static int 529genkbdclose(dev_t dev, int mode, int flag, struct thread *td) 530{ 531 keyboard_t *kbd; 532 genkbd_softc_t *sc; 533 int s; 534 535 /* 536 * NOTE: the device may have already become invalid. 537 * kbd == NULL || !KBD_IS_VALID(kbd) 538 */ 539 s = spltty(); 540 sc = dev->si_drv1; 541 kbd = kbd_get_keyboard(KBD_INDEX(dev)); 542 if ((sc == NULL) || (kbd == NULL) || !KBD_IS_VALID(kbd)) { 543 /* XXX: we shall be forgiving and don't report error... */ 544 } else { 545 kbd_release(kbd, (void *)sc); 546#if 0 547 clist_free_cblocks(&sc->gkb_q); 548#endif 549 } 550 splx(s); 551 return 0; 552} 553 554static int 555genkbdread(dev_t dev, struct uio *uio, int flag) 556{ 557 keyboard_t *kbd; 558 genkbd_softc_t *sc; 559 u_char buffer[KB_BUFSIZE]; 560 int len; 561 int error; 562 int s; 563 564 /* wait for input */ 565 s = spltty(); 566 sc = dev->si_drv1; 567 kbd = kbd_get_keyboard(KBD_INDEX(dev)); 568 if ((sc == NULL) || (kbd == NULL) || !KBD_IS_VALID(kbd)) { 569 splx(s); 570 return ENXIO; 571 } 572 while (sc->gkb_q.c_cc == 0) { 573 if (flag & IO_NDELAY) { 574 splx(s); 575 return EWOULDBLOCK; 576 } 577 sc->gkb_flags |= KB_ASLEEP; 578 error = tsleep(sc, PZERO | PCATCH, "kbdrea", 0); 579 kbd = kbd_get_keyboard(KBD_INDEX(dev)); 580 if ((kbd == NULL) || !KBD_IS_VALID(kbd)) { 581 splx(s); 582 return ENXIO; /* our keyboard has gone... */ 583 } 584 if (error) { 585 sc->gkb_flags &= ~KB_ASLEEP; 586 splx(s); 587 return error; 588 } 589 } 590 splx(s); 591 592 /* copy as much input as possible */ 593 error = 0; 594 while (uio->uio_resid > 0) { 595 len = imin(uio->uio_resid, sizeof(buffer)); 596 len = q_to_b(&sc->gkb_q, buffer, len); 597 if (len <= 0) 598 break; 599 error = uiomove(buffer, len, uio); 600 if (error) 601 break; 602 } 603 604 return error; 605} 606 607static int 608genkbdwrite(dev_t dev, struct uio *uio, int flag) 609{ 610 keyboard_t *kbd; 611 612 kbd = kbd_get_keyboard(KBD_INDEX(dev)); 613 if ((kbd == NULL) || !KBD_IS_VALID(kbd)) 614 return ENXIO; 615 return ENODEV; 616} 617 618static int 619genkbdioctl(dev_t dev, u_long cmd, caddr_t arg, int flag, struct thread *td) 620{ 621 keyboard_t *kbd; 622 int error; 623 624 kbd = kbd_get_keyboard(KBD_INDEX(dev)); 625 if ((kbd == NULL) || !KBD_IS_VALID(kbd)) 626 return ENXIO; 627 error = (*kbdsw[kbd->kb_index]->ioctl)(kbd, cmd, arg); 628 if (error == ENOIOCTL) 629 error = ENODEV; 630 return error; 631} 632 633static int 634genkbdpoll(dev_t dev, int events, struct thread *td) 635{ 636 keyboard_t *kbd; 637 genkbd_softc_t *sc; 638 int revents; 639 int s; 640 641 revents = 0; 642 s = spltty(); 643 sc = dev->si_drv1; 644 kbd = kbd_get_keyboard(KBD_INDEX(dev)); 645 if ((sc == NULL) || (kbd == NULL) || !KBD_IS_VALID(kbd)) { 646 revents = POLLHUP; /* the keyboard has gone */ 647 } else if (events & (POLLIN | POLLRDNORM)) { 648 if (sc->gkb_q.c_cc > 0) 649 revents = events & (POLLIN | POLLRDNORM); 650 else 651 selrecord(td, &sc->gkb_rsel); 652 } 653 splx(s); 654 return revents; 655} 656 657static int 658genkbd_event(keyboard_t *kbd, int event, void *arg) 659{ 660 genkbd_softc_t *sc; 661 size_t len; 662 u_char *cp; 663 int mode; 664 int c; 665 666 /* assert(KBD_IS_VALID(kbd)) */ 667 sc = (genkbd_softc_t *)arg; 668 669 switch (event) { 670 case KBDIO_KEYINPUT: 671 break; 672 case KBDIO_UNLOADING: 673 /* the keyboard is going... */ 674 kbd_release(kbd, (void *)sc); 675 if (sc->gkb_flags & KB_ASLEEP) { 676 sc->gkb_flags &= ~KB_ASLEEP; 677 wakeup(sc); 678 } 679 selwakeuppri(&sc->gkb_rsel, PZERO); 680 return 0; 681 default: 682 return EINVAL; 683 } 684 685 /* obtain the current key input mode */ 686 if ((*kbdsw[kbd->kb_index]->ioctl)(kbd, KDGKBMODE, (caddr_t)&mode)) 687 mode = K_XLATE; 688 689 /* read all pending input */ 690 while ((*kbdsw[kbd->kb_index]->check_char)(kbd)) { 691 c = (*kbdsw[kbd->kb_index]->read_char)(kbd, FALSE); 692 if (c == NOKEY) 693 continue; 694 if (c == ERRKEY) /* XXX: ring bell? */ 695 continue; 696 if (!KBD_IS_BUSY(kbd)) 697 /* the device is not open, discard the input */ 698 continue; 699 700 /* store the byte as is for K_RAW and K_CODE modes */ 701 if (mode != K_XLATE) { 702 putc(KEYCHAR(c), &sc->gkb_q); 703 continue; 704 } 705 706 /* K_XLATE */ 707 if (c & RELKEY) /* key release is ignored */ 708 continue; 709 710 /* process special keys; most of them are just ignored... */ 711 if (c & SPCLKEY) { 712 switch (KEYCHAR(c)) { 713 default: 714 /* ignore them... */ 715 continue; 716 case BTAB: /* a backtab: ESC [ Z */ 717 putc(0x1b, &sc->gkb_q); 718 putc('[', &sc->gkb_q); 719 putc('Z', &sc->gkb_q); 720 continue; 721 } 722 } 723 724 /* normal chars, normal chars with the META, function keys */ 725 switch (KEYFLAGS(c)) { 726 case 0: /* a normal char */ 727 putc(KEYCHAR(c), &sc->gkb_q); 728 break; 729 case MKEY: /* the META flag: prepend ESC */ 730 putc(0x1b, &sc->gkb_q); 731 putc(KEYCHAR(c), &sc->gkb_q); 732 break; 733 case FKEY | SPCLKEY: /* a function key, return string */ 734 cp = (*kbdsw[kbd->kb_index]->get_fkeystr)(kbd, 735 KEYCHAR(c), &len); 736 if (cp != NULL) { 737 while (len-- > 0) 738 putc(*cp++, &sc->gkb_q); 739 } 740 break; 741 } 742 } 743 744 /* wake up sleeping/polling processes */ 745 if (sc->gkb_q.c_cc > 0) { 746 if (sc->gkb_flags & KB_ASLEEP) { 747 sc->gkb_flags &= ~KB_ASLEEP; 748 wakeup(sc); 749 } 750 selwakeuppri(&sc->gkb_rsel, PZERO); 751 } 752 753 return 0; 754} 755 756#endif /* KBD_INSTALL_CDEV */ 757 758/* 759 * Generic low-level keyboard functions 760 * The low-level functions in the keyboard subdriver may use these 761 * functions. 762 */ 763 764#ifndef KBD_DISABLE_KEYMAP_LOAD 765static int key_change_ok(struct keyent_t *, struct keyent_t *, struct thread *); 766static int keymap_change_ok(keymap_t *, keymap_t *, struct thread *); 767static int accent_change_ok(accentmap_t *, accentmap_t *, struct thread *); 768static int fkey_change_ok(fkeytab_t *, fkeyarg_t *, struct thread *); 769#endif 770 771int 772genkbd_commonioctl(keyboard_t *kbd, u_long cmd, caddr_t arg) 773{ 774 keyarg_t *keyp; 775 fkeyarg_t *fkeyp; 776 int s; 777 int i; 778#ifndef KBD_DISABLE_KEYMAP_LOAD 779 int error; 780#endif 781 782 s = spltty(); 783 switch (cmd) { 784 785 case KDGKBINFO: /* get keyboard information */ 786 ((keyboard_info_t *)arg)->kb_index = kbd->kb_index; 787 i = imin(strlen(kbd->kb_name) + 1, 788 sizeof(((keyboard_info_t *)arg)->kb_name)); 789 bcopy(kbd->kb_name, ((keyboard_info_t *)arg)->kb_name, i); 790 ((keyboard_info_t *)arg)->kb_unit = kbd->kb_unit; 791 ((keyboard_info_t *)arg)->kb_type = kbd->kb_type; 792 ((keyboard_info_t *)arg)->kb_config = kbd->kb_config; 793 ((keyboard_info_t *)arg)->kb_flags = kbd->kb_flags; 794 break; 795 796 case KDGKBTYPE: /* get keyboard type */ 797 *(int *)arg = kbd->kb_type; 798 break; 799 800 case KDGETREPEAT: /* get keyboard repeat rate */ 801 ((int *)arg)[0] = kbd->kb_delay1; 802 ((int *)arg)[1] = kbd->kb_delay2; 803 break; 804 805 case GIO_KEYMAP: /* get keyboard translation table */ 806 bcopy(kbd->kb_keymap, arg, sizeof(*kbd->kb_keymap)); 807 break; 808 case PIO_KEYMAP: /* set keyboard translation table */ 809#ifndef KBD_DISABLE_KEYMAP_LOAD 810 error = keymap_change_ok(kbd->kb_keymap, (keymap_t *)arg, 811 curthread); 812 if (error != 0) { 813 splx(s); 814 return error; 815 } 816 bzero(kbd->kb_accentmap, sizeof(*kbd->kb_accentmap)); 817 bcopy(arg, kbd->kb_keymap, sizeof(*kbd->kb_keymap)); 818 break; 819#else 820 splx(s); 821 return ENODEV; 822#endif 823 824 case GIO_KEYMAPENT: /* get keyboard translation table entry */ 825 keyp = (keyarg_t *)arg; 826 if (keyp->keynum >= sizeof(kbd->kb_keymap->key) 827 /sizeof(kbd->kb_keymap->key[0])) { 828 splx(s); 829 return EINVAL; 830 } 831 bcopy(&kbd->kb_keymap->key[keyp->keynum], &keyp->key, 832 sizeof(keyp->key)); 833 break; 834 case PIO_KEYMAPENT: /* set keyboard translation table entry */ 835#ifndef KBD_DISABLE_KEYMAP_LOAD 836 keyp = (keyarg_t *)arg; 837 if (keyp->keynum >= sizeof(kbd->kb_keymap->key) 838 /sizeof(kbd->kb_keymap->key[0])) { 839 splx(s); 840 return EINVAL; 841 } 842 error = key_change_ok(&kbd->kb_keymap->key[keyp->keynum], 843 &keyp->key, curthread); 844 if (error != 0) { 845 splx(s); 846 return error; 847 } 848 bcopy(&keyp->key, &kbd->kb_keymap->key[keyp->keynum], 849 sizeof(keyp->key)); 850 break; 851#else 852 splx(s); 853 return ENODEV; 854#endif 855 856 case GIO_DEADKEYMAP: /* get accent key translation table */ 857 bcopy(kbd->kb_accentmap, arg, sizeof(*kbd->kb_accentmap)); 858 break; 859 case PIO_DEADKEYMAP: /* set accent key translation table */ 860#ifndef KBD_DISABLE_KEYMAP_LOAD 861 error = accent_change_ok(kbd->kb_accentmap, 862 (accentmap_t *)arg, curthread); 863 if (error != 0) { 864 splx(s); 865 return error; 866 } 867 bcopy(arg, kbd->kb_accentmap, sizeof(*kbd->kb_accentmap)); 868 break; 869#else 870 splx(s); 871 return ENODEV; 872#endif 873 874 case GETFKEY: /* get functionkey string */ 875 fkeyp = (fkeyarg_t *)arg; 876 if (fkeyp->keynum >= kbd->kb_fkeytab_size) { 877 splx(s); 878 return EINVAL; 879 } 880 bcopy(kbd->kb_fkeytab[fkeyp->keynum].str, fkeyp->keydef, 881 kbd->kb_fkeytab[fkeyp->keynum].len); 882 fkeyp->flen = kbd->kb_fkeytab[fkeyp->keynum].len; 883 break; 884 case SETFKEY: /* set functionkey string */ 885#ifndef KBD_DISABLE_KEYMAP_LOAD 886 fkeyp = (fkeyarg_t *)arg; 887 if (fkeyp->keynum >= kbd->kb_fkeytab_size) { 888 splx(s); 889 return EINVAL; 890 } 891 error = fkey_change_ok(&kbd->kb_fkeytab[fkeyp->keynum], 892 fkeyp, curthread); 893 if (error != 0) { 894 splx(s); 895 return error; 896 } 897 kbd->kb_fkeytab[fkeyp->keynum].len = imin(fkeyp->flen, MAXFK); 898 bcopy(fkeyp->keydef, kbd->kb_fkeytab[fkeyp->keynum].str, 899 kbd->kb_fkeytab[fkeyp->keynum].len); 900 break; 901#else 902 splx(s); 903 return ENODEV; 904#endif 905 906 default: 907 splx(s); 908 return ENOIOCTL; 909 } 910 911 splx(s); 912 return 0; 913} 914 915#ifndef KBD_DISABLE_KEYMAP_LOAD 916#define RESTRICTED_KEY(key, i) \ 917 ((key->spcl & (0x80 >> i)) && \ 918 (key->map[i] == RBT || key->map[i] == SUSP || \ 919 key->map[i] == STBY || key->map[i] == DBG || \ 920 key->map[i] == PNC || key->map[i] == HALT || \ 921 key->map[i] == PDWN)) 922 923static int 924key_change_ok(struct keyent_t *oldkey, struct keyent_t *newkey, struct thread *td) 925{ 926 int i; 927 928 /* Low keymap_restrict_change means any changes are OK. */ 929 if (keymap_restrict_change <= 0) 930 return 0; 931 932 /* High keymap_restrict_change means only root can change the keymap. */ 933 if (keymap_restrict_change >= 2) { 934 for (i = 0; i < NUM_STATES; i++) 935 if (oldkey->map[i] != newkey->map[i]) 936 return suser(td); 937 if (oldkey->spcl != newkey->spcl) 938 return suser(td); 939 if (oldkey->flgs != newkey->flgs) 940 return suser(td); 941 return 0; 942 } 943 944 /* Otherwise we have to see if any special keys are being changed. */ 945 for (i = 0; i < NUM_STATES; i++) { 946 /* 947 * If either the oldkey or the newkey action is restricted 948 * then we must make sure that the action doesn't change. 949 */ 950 if (!RESTRICTED_KEY(oldkey, i) && !RESTRICTED_KEY(newkey, i)) 951 continue; 952 if ((oldkey->spcl & (0x80 >> i)) == (newkey->spcl & (0x80 >> i)) 953 && oldkey->map[i] == newkey->map[i]) 954 continue; 955 return suser(td); 956 } 957 958 return 0; 959} 960 961static int 962keymap_change_ok(keymap_t *oldmap, keymap_t *newmap, struct thread *td) 963{ 964 int keycode, error; 965 966 for (keycode = 0; keycode < NUM_KEYS; keycode++) { 967 if ((error = key_change_ok(&oldmap->key[keycode], 968 &newmap->key[keycode], td)) != 0) 969 return error; 970 } 971 return 0; 972} 973 974static int 975accent_change_ok(accentmap_t *oldmap, accentmap_t *newmap, struct thread *td) 976{ 977 struct acc_t *oldacc, *newacc; 978 int accent, i; 979 980 if (keymap_restrict_change <= 2) 981 return 0; 982 983 if (oldmap->n_accs != newmap->n_accs) 984 return suser(td); 985 986 for (accent = 0; accent < oldmap->n_accs; accent++) { 987 oldacc = &oldmap->acc[accent]; 988 newacc = &newmap->acc[accent]; 989 if (oldacc->accchar != newacc->accchar) 990 return suser(td); 991 for (i = 0; i < NUM_ACCENTCHARS; ++i) { 992 if (oldacc->map[i][0] != newacc->map[i][0]) 993 return suser(td); 994 if (oldacc->map[i][0] == 0) /* end of table */ 995 break; 996 if (oldacc->map[i][1] != newacc->map[i][1]) 997 return suser(td); 998 } 999 } 1000 1001 return 0; 1002} 1003 1004static int 1005fkey_change_ok(fkeytab_t *oldkey, fkeyarg_t *newkey, struct thread *td) 1006{ 1007 if (keymap_restrict_change <= 3) 1008 return 0; 1009 1010 if (oldkey->len != newkey->flen || 1011 bcmp(oldkey->str, newkey->keydef, oldkey->len) != 0) 1012 return suser(td); 1013 1014 return 0; 1015} 1016#endif 1017 1018/* get a pointer to the string associated with the given function key */ 1019u_char 1020*genkbd_get_fkeystr(keyboard_t *kbd, int fkey, size_t *len) 1021{ 1022 if (kbd == NULL) 1023 return NULL; 1024 fkey -= F_FN; 1025 if (fkey > kbd->kb_fkeytab_size) 1026 return NULL; 1027 *len = kbd->kb_fkeytab[fkey].len; 1028 return kbd->kb_fkeytab[fkey].str; 1029} 1030 1031/* diagnostic dump */ 1032static char 1033*get_kbd_type_name(int type) 1034{ 1035 static struct { 1036 int type; 1037 char *name; 1038 } name_table[] = { 1039 { KB_84, "AT 84" }, 1040 { KB_101, "AT 101/102" }, 1041 { KB_OTHER, "generic" }, 1042 }; 1043 int i; 1044 1045 for (i = 0; i < sizeof(name_table)/sizeof(name_table[0]); ++i) { 1046 if (type == name_table[i].type) 1047 return name_table[i].name; 1048 } 1049 return "unknown"; 1050} 1051 1052void 1053genkbd_diag(keyboard_t *kbd, int level) 1054{ 1055 if (level > 0) { 1056 printf("kbd%d: %s%d, %s (%d), config:0x%x, flags:0x%x", 1057 kbd->kb_index, kbd->kb_name, kbd->kb_unit, 1058 get_kbd_type_name(kbd->kb_type), kbd->kb_type, 1059 kbd->kb_config, kbd->kb_flags); 1060 if (kbd->kb_io_base > 0) 1061 printf(", port:0x%x-0x%x", kbd->kb_io_base, 1062 kbd->kb_io_base + kbd->kb_io_size - 1); 1063 printf("\n"); 1064 } 1065} 1066 1067#define set_lockkey_state(k, s, l) \ 1068 if (!((s) & l ## DOWN)) { \ 1069 int i; \ 1070 (s) |= l ## DOWN; \ 1071 (s) ^= l ## ED; \ 1072 i = (s) & LOCK_MASK; \ 1073 (*kbdsw[(k)->kb_index]->ioctl)((k), KDSETLED, (caddr_t)&i); \ 1074 } 1075 1076static u_int 1077save_accent_key(keyboard_t *kbd, u_int key, int *accents) 1078{ 1079 int i; 1080 1081 /* make an index into the accent map */ 1082 i = key - F_ACC + 1; 1083 if ((i > kbd->kb_accentmap->n_accs) 1084 || (kbd->kb_accentmap->acc[i - 1].accchar == 0)) { 1085 /* the index is out of range or pointing to an empty entry */ 1086 *accents = 0; 1087 return ERRKEY; 1088 } 1089 1090 /* 1091 * If the same accent key has been hit twice, produce the accent char 1092 * itself. 1093 */ 1094 if (i == *accents) { 1095 key = kbd->kb_accentmap->acc[i - 1].accchar; 1096 *accents = 0; 1097 return key; 1098 } 1099 1100 /* remember the index and wait for the next key */ 1101 *accents = i; 1102 return NOKEY; 1103} 1104 1105static u_int 1106make_accent_char(keyboard_t *kbd, u_int ch, int *accents) 1107{ 1108 struct acc_t *acc; 1109 int i; 1110 1111 acc = &kbd->kb_accentmap->acc[*accents - 1]; 1112 *accents = 0; 1113 1114 /* 1115 * If the accent key is followed by the space key, 1116 * produce the accent char itself. 1117 */ 1118 if (ch == ' ') 1119 return acc->accchar; 1120 1121 /* scan the accent map */ 1122 for (i = 0; i < NUM_ACCENTCHARS; ++i) { 1123 if (acc->map[i][0] == 0) /* end of table */ 1124 break; 1125 if (acc->map[i][0] == ch) 1126 return acc->map[i][1]; 1127 } 1128 /* this char cannot be accented... */ 1129 return ERRKEY; 1130} 1131 1132int 1133genkbd_keyaction(keyboard_t *kbd, int keycode, int up, int *shiftstate, 1134 int *accents) 1135{ 1136 struct keyent_t *key; 1137 int state = *shiftstate; 1138 int action; 1139 int f; 1140 int i; 1141 1142 i = keycode; 1143 f = state & (AGRS | ALKED); 1144 if ((f == AGRS1) || (f == AGRS2) || (f == ALKED)) 1145 i += ALTGR_OFFSET; 1146 key = &kbd->kb_keymap->key[i]; 1147 i = ((state & SHIFTS) ? 1 : 0) 1148 | ((state & CTLS) ? 2 : 0) 1149 | ((state & ALTS) ? 4 : 0); 1150 if (((key->flgs & FLAG_LOCK_C) && (state & CLKED)) 1151 || ((key->flgs & FLAG_LOCK_N) && (state & NLKED)) ) 1152 i ^= 1; 1153 1154 if (up) { /* break: key released */ 1155 action = kbd->kb_lastact[keycode]; 1156 kbd->kb_lastact[keycode] = NOP; 1157 switch (action) { 1158 case LSHA: 1159 if (state & SHIFTAON) { 1160 set_lockkey_state(kbd, state, ALK); 1161 state &= ~ALKDOWN; 1162 } 1163 action = LSH; 1164 /* FALL THROUGH */ 1165 case LSH: 1166 state &= ~SHIFTS1; 1167 break; 1168 case RSHA: 1169 if (state & SHIFTAON) { 1170 set_lockkey_state(kbd, state, ALK); 1171 state &= ~ALKDOWN; 1172 } 1173 action = RSH; 1174 /* FALL THROUGH */ 1175 case RSH: 1176 state &= ~SHIFTS2; 1177 break; 1178 case LCTRA: 1179 if (state & SHIFTAON) { 1180 set_lockkey_state(kbd, state, ALK); 1181 state &= ~ALKDOWN; 1182 } 1183 action = LCTR; 1184 /* FALL THROUGH */ 1185 case LCTR: 1186 state &= ~CTLS1; 1187 break; 1188 case RCTRA: 1189 if (state & SHIFTAON) { 1190 set_lockkey_state(kbd, state, ALK); 1191 state &= ~ALKDOWN; 1192 } 1193 action = RCTR; 1194 /* FALL THROUGH */ 1195 case RCTR: 1196 state &= ~CTLS2; 1197 break; 1198 case LALTA: 1199 if (state & SHIFTAON) { 1200 set_lockkey_state(kbd, state, ALK); 1201 state &= ~ALKDOWN; 1202 } 1203 action = LALT; 1204 /* FALL THROUGH */ 1205 case LALT: 1206 state &= ~ALTS1; 1207 break; 1208 case RALTA: 1209 if (state & SHIFTAON) { 1210 set_lockkey_state(kbd, state, ALK); 1211 state &= ~ALKDOWN; 1212 } 1213 action = RALT; 1214 /* FALL THROUGH */ 1215 case RALT: 1216 state &= ~ALTS2; 1217 break; 1218 case ASH: 1219 state &= ~AGRS1; 1220 break; 1221 case META: 1222 state &= ~METAS1; 1223 break; 1224 case NLK: 1225 state &= ~NLKDOWN; 1226 break; 1227 case CLK: 1228#ifndef PC98 1229 state &= ~CLKDOWN; 1230#else 1231 state &= ~CLKED; 1232 i = state & LOCK_MASK; 1233 (*kbdsw[kbd->kb_index]->ioctl)(kbd, KDSETLED, 1234 (caddr_t)&i); 1235#endif 1236 break; 1237 case SLK: 1238 state &= ~SLKDOWN; 1239 break; 1240 case ALK: 1241 state &= ~ALKDOWN; 1242 break; 1243 case NOP: 1244 /* release events of regular keys are not reported */ 1245 *shiftstate &= ~SHIFTAON; 1246 return NOKEY; 1247 } 1248 *shiftstate = state & ~SHIFTAON; 1249 return (SPCLKEY | RELKEY | action); 1250 } else { /* make: key pressed */ 1251 action = key->map[i]; 1252 state &= ~SHIFTAON; 1253 if (key->spcl & (0x80 >> i)) { 1254 /* special keys */ 1255 if (kbd->kb_lastact[keycode] == NOP) 1256 kbd->kb_lastact[keycode] = action; 1257 if (kbd->kb_lastact[keycode] != action) 1258 action = NOP; 1259 switch (action) { 1260 /* LOCKING KEYS */ 1261 case NLK: 1262 set_lockkey_state(kbd, state, NLK); 1263 break; 1264 case CLK: 1265#ifndef PC98 1266 set_lockkey_state(kbd, state, CLK); 1267#else 1268 state |= CLKED; 1269 i = state & LOCK_MASK; 1270 (*kbdsw[kbd->kb_index]->ioctl)(kbd, KDSETLED, 1271 (caddr_t)&i); 1272#endif 1273 break; 1274 case SLK: 1275 set_lockkey_state(kbd, state, SLK); 1276 break; 1277 case ALK: 1278 set_lockkey_state(kbd, state, ALK); 1279 break; 1280 /* NON-LOCKING KEYS */ 1281 case SPSC: case RBT: case SUSP: case STBY: 1282 case DBG: case NEXT: case PREV: case PNC: 1283 case HALT: case PDWN: 1284 *accents = 0; 1285 break; 1286 case BTAB: 1287 *accents = 0; 1288 action |= BKEY; 1289 break; 1290 case LSHA: 1291 state |= SHIFTAON; 1292 action = LSH; 1293 /* FALL THROUGH */ 1294 case LSH: 1295 state |= SHIFTS1; 1296 break; 1297 case RSHA: 1298 state |= SHIFTAON; 1299 action = RSH; 1300 /* FALL THROUGH */ 1301 case RSH: 1302 state |= SHIFTS2; 1303 break; 1304 case LCTRA: 1305 state |= SHIFTAON; 1306 action = LCTR; 1307 /* FALL THROUGH */ 1308 case LCTR: 1309 state |= CTLS1; 1310 break; 1311 case RCTRA: 1312 state |= SHIFTAON; 1313 action = RCTR; 1314 /* FALL THROUGH */ 1315 case RCTR: 1316 state |= CTLS2; 1317 break; 1318 case LALTA: 1319 state |= SHIFTAON; 1320 action = LALT; 1321 /* FALL THROUGH */ 1322 case LALT: 1323 state |= ALTS1; 1324 break; 1325 case RALTA: 1326 state |= SHIFTAON; 1327 action = RALT; 1328 /* FALL THROUGH */ 1329 case RALT: 1330 state |= ALTS2; 1331 break; 1332 case ASH: 1333 state |= AGRS1; 1334 break; 1335 case META: 1336 state |= METAS1; 1337 break; 1338 case NOP: 1339 *shiftstate = state; 1340 return NOKEY; 1341 default: 1342 /* is this an accent (dead) key? */ 1343 *shiftstate = state; 1344 if (action >= F_ACC && action <= L_ACC) { 1345 action = save_accent_key(kbd, action, 1346 accents); 1347 switch (action) { 1348 case NOKEY: 1349 case ERRKEY: 1350 return action; 1351 default: 1352 if (state & METAS) 1353 return (action | MKEY); 1354 else 1355 return action; 1356 } 1357 /* NOT REACHED */ 1358 } 1359 /* other special keys */ 1360 if (*accents > 0) { 1361 *accents = 0; 1362 return ERRKEY; 1363 } 1364 if (action >= F_FN && action <= L_FN) 1365 action |= FKEY; 1366 /* XXX: return fkey string for the FKEY? */ 1367 return (SPCLKEY | action); 1368 } 1369 *shiftstate = state; 1370 return (SPCLKEY | action); 1371 } else { 1372 /* regular keys */ 1373 kbd->kb_lastact[keycode] = NOP; 1374 *shiftstate = state; 1375 if (*accents > 0) { 1376 /* make an accented char */ 1377 action = make_accent_char(kbd, action, accents); 1378 if (action == ERRKEY) 1379 return action; 1380 } 1381 if (state & METAS) 1382 action |= MKEY; 1383 return action; 1384 } 1385 } 1386 /* NOT REACHED */ 1387} 1388