1 /* 2 * vkbd.c 3 */ 4 5 /*- 6 * Copyright (c) 2004 Maksim Yevmenkin <m_evmenkin@yahoo.com> 7 * All rights reserved. 8 * 9 * Redistribution and use in source and binary forms, with or without 10 * modification, are permitted provided that the following conditions 11 * are met: 12 * 1. Redistributions of source code must retain the above copyright 13 * notice, this list of conditions and the following disclaimer. 14 * 2. Redistributions in binary form must reproduce the above copyright 15 * notice, this list of conditions and the following disclaimer in the 16 * documentation and/or other materials provided with the distribution. 17 * 18 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 19 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 20 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 21 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 22 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 23 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 24 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 25 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 26 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 27 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 28 * SUCH DAMAGE. 29 * 30 * $Id: vkbd.c,v 1.20 2004/11/15 23:53:30 max Exp $ 31 * $FreeBSD$ 32 */ 33 34 #include "opt_compat.h" 35 #include "opt_kbd.h" 36 37 #include <sys/param.h> 38 #include <sys/conf.h> 39 #include <sys/fcntl.h> 40 #include <sys/kbio.h> 41 #include <sys/kernel.h> 42 #include <sys/limits.h> 43 #include <sys/lock.h> 44 #include <sys/malloc.h> 45 #include <sys/module.h> 46 #include <sys/mutex.h> 47 #include <sys/poll.h> 48 #include <sys/proc.h> 49 #include <sys/queue.h> 50 #include <sys/selinfo.h> 51 #include <sys/systm.h> 52 #include <sys/taskqueue.h> 53 #include <sys/uio.h> 54 #include <dev/kbd/kbdreg.h> 55 #include <dev/kbd/kbdtables.h> 56 #include <dev/vkbd/vkbd_var.h> 57 58 #define DEVICE_NAME "vkbdctl" 59 #define KEYBOARD_NAME "vkbd" 60 61 MALLOC_DECLARE(M_VKBD); 62 MALLOC_DEFINE(M_VKBD, KEYBOARD_NAME, "Virtual AT keyboard"); 63 64 /***************************************************************************** 65 ***************************************************************************** 66 ** Keyboard state 67 ***************************************************************************** 68 *****************************************************************************/ 69 70 /* 71 * XXX 72 * For now rely on Giant mutex to protect our data structures. 73 * Just like the rest of keyboard drivers and syscons(4) do. 74 */ 75 76 #if 0 /* not yet */ 77 #define VKBD_LOCK_DECL struct mtx ks_lock 78 #define VKBD_LOCK_INIT(s) mtx_init(&(s)->ks_lock, "vkbd_lock", NULL, MTX_DEF|MTX_RECURSE) 79 #define VKBD_LOCK_DESTROY(s) mtx_destroy(&(s)->ks_lock) 80 #define VKBD_LOCK(s) mtx_lock(&(s)->ks_lock) 81 #define VKBD_UNLOCK(s) mtx_unlock(&(s)->ks_lock) 82 #define VKBD_LOCK_ASSERT(s, w) mtx_assert(&(s)->ks_lock, w) 83 #define VKBD_SLEEP(s, f, d, t) \ 84 msleep(&(s)->f, &(s)->ks_lock, PCATCH | (PZERO + 1), d, t) 85 #else 86 #define VKBD_LOCK_DECL 87 #define VKBD_LOCK_INIT(s) 88 #define VKBD_LOCK_DESTROY(s) 89 #define VKBD_LOCK(s) 90 #define VKBD_UNLOCK(s) 91 #define VKBD_LOCK_ASSERT(s, w) 92 #define VKBD_SLEEP(s, f, d, t) tsleep(&(s)->f, PCATCH | (PZERO + 1), d, t) 93 #endif 94 95 #define VKBD_KEYBOARD(d) \ 96 kbd_get_keyboard(kbd_find_keyboard(KEYBOARD_NAME, dev2unit(d))) 97 98 /* vkbd queue */ 99 struct vkbd_queue 100 { 101 int q[VKBD_Q_SIZE]; /* queue */ 102 int head; /* index of the first code */ 103 int tail; /* index of the last code */ 104 int cc; /* number of codes in queue */ 105 }; 106 107 typedef struct vkbd_queue vkbd_queue_t; 108 109 /* vkbd state */ 110 struct vkbd_state 111 { 112 struct cdev *ks_dev; /* control device */ 113 114 struct selinfo ks_rsel; /* select(2) */ 115 struct selinfo ks_wsel; 116 117 vkbd_queue_t ks_inq; /* input key codes queue */ 118 struct task ks_task; /* interrupt task */ 119 120 int ks_flags; /* flags */ 121 #define OPEN (1 << 0) /* control device is open */ 122 #define COMPOSE (1 << 1) /* compose flag */ 123 #define STATUS (1 << 2) /* status has changed */ 124 #define TASK (1 << 3) /* interrupt task queued */ 125 #define READ (1 << 4) /* read pending */ 126 #define WRITE (1 << 5) /* write pending */ 127 128 int ks_mode; /* K_XLATE, K_RAW, K_CODE */ 129 int ks_polling; /* polling flag */ 130 int ks_state; /* shift/lock key state */ 131 int ks_accents; /* accent key index (> 0) */ 132 u_int ks_composed_char; /* composed char code */ 133 u_char ks_prefix; /* AT scan code prefix */ 134 135 VKBD_LOCK_DECL; 136 }; 137 138 typedef struct vkbd_state vkbd_state_t; 139 140 /***************************************************************************** 141 ***************************************************************************** 142 ** Character device 143 ***************************************************************************** 144 *****************************************************************************/ 145 146 static void vkbd_dev_clone(void *, struct ucred *, char *, int, 147 struct cdev **); 148 static d_open_t vkbd_dev_open; 149 static d_close_t vkbd_dev_close; 150 static d_read_t vkbd_dev_read; 151 static d_write_t vkbd_dev_write; 152 static d_ioctl_t vkbd_dev_ioctl; 153 static d_poll_t vkbd_dev_poll; 154 static void vkbd_dev_intr(void *, int); 155 static void vkbd_status_changed(vkbd_state_t *); 156 static int vkbd_data_ready(vkbd_state_t *); 157 static int vkbd_data_read(vkbd_state_t *, int); 158 159 static struct cdevsw vkbd_dev_cdevsw = { 160 .d_version = D_VERSION, 161 .d_flags = D_PSEUDO | D_NEEDGIANT, 162 .d_open = vkbd_dev_open, 163 .d_close = vkbd_dev_close, 164 .d_read = vkbd_dev_read, 165 .d_write = vkbd_dev_write, 166 .d_ioctl = vkbd_dev_ioctl, 167 .d_poll = vkbd_dev_poll, 168 .d_name = DEVICE_NAME, 169 }; 170 171 static struct clonedevs *vkbd_dev_clones = NULL; 172 173 /* Clone device */ 174 static void 175 vkbd_dev_clone(void *arg, struct ucred *cred, char *name, int namelen, 176 struct cdev **dev) 177 { 178 int unit; 179 180 if (*dev != NULL) 181 return; 182 183 if (strcmp(name, DEVICE_NAME) == 0) 184 unit = -1; 185 else if (dev_stdclone(name, NULL, DEVICE_NAME, &unit) != 1) 186 return; /* don't recognize the name */ 187 188 /* find any existing device, or allocate new unit number */ 189 if (clone_create(&vkbd_dev_clones, &vkbd_dev_cdevsw, &unit, dev, 0)) { 190 *dev = make_dev(&vkbd_dev_cdevsw, unit2minor(unit), 191 UID_ROOT, GID_WHEEL, 0600, DEVICE_NAME "%d", unit); 192 if (*dev != NULL) { 193 dev_ref(*dev); 194 (*dev)->si_flags |= SI_CHEAPCLONE; 195 } 196 } 197 } 198 199 /* Open device */ 200 static int 201 vkbd_dev_open(struct cdev *dev, int flag, int mode, struct thread *td) 202 { 203 int unit = dev2unit(dev), error; 204 keyboard_switch_t *sw = NULL; 205 keyboard_t *kbd = NULL; 206 vkbd_state_t *state = (vkbd_state_t *) dev->si_drv1; 207 208 /* XXX FIXME: dev->si_drv1 locking */ 209 if (state == NULL) { 210 if ((sw = kbd_get_switch(KEYBOARD_NAME)) == NULL) 211 return (ENXIO); 212 213 if ((error = (*sw->probe)(unit, NULL, 0)) != 0 || 214 (error = (*sw->init)(unit, &kbd, NULL, 0)) != 0) 215 return (error); 216 217 state = (vkbd_state_t *) kbd->kb_data; 218 219 if ((error = (*sw->enable)(kbd)) != 0) { 220 (*sw->term)(kbd); 221 return (error); 222 } 223 224 #ifdef KBD_INSTALL_CDEV 225 if ((error = kbd_attach(kbd)) != 0) { 226 (*sw->disable)(kbd); 227 (*sw->term)(kbd); 228 return (error); 229 } 230 #endif /* def KBD_INSTALL_CDEV */ 231 232 dev->si_drv1 = kbd->kb_data; 233 } 234 235 VKBD_LOCK(state); 236 237 if (state->ks_flags & OPEN) { 238 VKBD_UNLOCK(state); 239 return (EBUSY); 240 } 241 242 state->ks_flags |= OPEN; 243 state->ks_dev = dev; 244 245 VKBD_UNLOCK(state); 246 247 return (0); 248 } 249 250 /* Close device */ 251 static int 252 vkbd_dev_close(struct cdev *dev, int foo, int bar, struct thread *td) 253 { 254 keyboard_t *kbd = VKBD_KEYBOARD(dev); 255 vkbd_state_t *state = NULL; 256 257 if (kbd == NULL) 258 return (ENXIO); 259 260 if (kbd->kb_data == NULL || kbd->kb_data != dev->si_drv1) 261 panic("%s: kbd->kb_data != dev->si_drv1\n", __func__); 262 263 state = (vkbd_state_t *) kbd->kb_data; 264 265 VKBD_LOCK(state); 266 267 /* wait for interrupt task */ 268 while (state->ks_flags & TASK) 269 VKBD_SLEEP(state, ks_task, "vkbdc", 0); 270 271 /* wakeup poll()ers */ 272 selwakeuppri(&state->ks_rsel, PZERO + 1); 273 selwakeuppri(&state->ks_wsel, PZERO + 1); 274 275 state->ks_flags &= ~OPEN; 276 state->ks_dev = NULL; 277 state->ks_inq.head = state->ks_inq.tail = state->ks_inq.cc = 0; 278 279 VKBD_UNLOCK(state); 280 281 kbdd_disable(kbd); 282 #ifdef KBD_INSTALL_CDEV 283 kbd_detach(kbd); 284 #endif /* def KBD_INSTALL_CDEV */ 285 kbdd_term(kbd); 286 287 /* XXX FIXME: dev->si_drv1 locking */ 288 dev->si_drv1 = NULL; 289 290 return (0); 291 } 292 293 /* Read status */ 294 static int 295 vkbd_dev_read(struct cdev *dev, struct uio *uio, int flag) 296 { 297 keyboard_t *kbd = VKBD_KEYBOARD(dev); 298 vkbd_state_t *state = NULL; 299 vkbd_status_t status; 300 int error; 301 302 if (kbd == NULL) 303 return (ENXIO); 304 305 if (uio->uio_resid != sizeof(status)) 306 return (EINVAL); 307 308 if (kbd->kb_data == NULL || kbd->kb_data != dev->si_drv1) 309 panic("%s: kbd->kb_data != dev->si_drv1\n", __func__); 310 311 state = (vkbd_state_t *) kbd->kb_data; 312 313 VKBD_LOCK(state); 314 315 if (state->ks_flags & READ) { 316 VKBD_UNLOCK(state); 317 return (EALREADY); 318 } 319 320 state->ks_flags |= READ; 321 again: 322 if (state->ks_flags & STATUS) { 323 state->ks_flags &= ~STATUS; 324 325 status.mode = state->ks_mode; 326 status.leds = KBD_LED_VAL(kbd); 327 status.lock = state->ks_state & LOCK_MASK; 328 status.delay = kbd->kb_delay1; 329 status.rate = kbd->kb_delay2; 330 bzero(status.reserved, sizeof(status.reserved)); 331 332 error = uiomove(&status, sizeof(status), uio); 333 } else { 334 if (flag & O_NONBLOCK) { 335 error = EWOULDBLOCK; 336 goto done; 337 } 338 339 error = VKBD_SLEEP(state, ks_flags, "vkbdr", 0); 340 if (error != 0) 341 goto done; 342 343 goto again; 344 } 345 done: 346 state->ks_flags &= ~READ; 347 348 VKBD_UNLOCK(state); 349 350 return (error); 351 } 352 353 /* Write scancodes */ 354 static int 355 vkbd_dev_write(struct cdev *dev, struct uio *uio, int flag) 356 { 357 keyboard_t *kbd = VKBD_KEYBOARD(dev); 358 vkbd_state_t *state = NULL; 359 vkbd_queue_t *q = NULL; 360 int error, avail, bytes; 361 362 if (kbd == NULL) 363 return (ENXIO); 364 365 if (uio->uio_resid <= 0) 366 return (EINVAL); 367 368 if (kbd->kb_data == NULL || kbd->kb_data != dev->si_drv1) 369 panic("%s: kbd->kb_data != dev->si_drv1\n", __func__); 370 371 state = (vkbd_state_t *) kbd->kb_data; 372 373 VKBD_LOCK(state); 374 375 if (state->ks_flags & WRITE) { 376 VKBD_UNLOCK(state); 377 return (EALREADY); 378 } 379 380 state->ks_flags |= WRITE; 381 error = 0; 382 q = &state->ks_inq; 383 384 while (uio->uio_resid >= sizeof(q->q[0])) { 385 if (q->head == q->tail) { 386 if (q->cc == 0) 387 avail = sizeof(q->q)/sizeof(q->q[0]) - q->head; 388 else 389 avail = 0; /* queue must be full */ 390 } else if (q->head < q->tail) 391 avail = sizeof(q->q)/sizeof(q->q[0]) - q->tail; 392 else 393 avail = q->head - q->tail; 394 395 if (avail == 0) { 396 if (flag & O_NONBLOCK) { 397 error = EWOULDBLOCK; 398 break; 399 } 400 401 error = VKBD_SLEEP(state, ks_inq, "vkbdw", 0); 402 if (error != 0) 403 break; 404 } else { 405 bytes = avail * sizeof(q->q[0]); 406 if (bytes > uio->uio_resid) { 407 avail = uio->uio_resid / sizeof(q->q[0]); 408 bytes = avail * sizeof(q->q[0]); 409 } 410 411 error = uiomove((void *) &q->q[q->tail], bytes, uio); 412 if (error != 0) 413 break; 414 415 q->cc += avail; 416 q->tail += avail; 417 if (q->tail == sizeof(q->q)/sizeof(q->q[0])) 418 q->tail = 0; 419 420 /* queue interrupt task if needed */ 421 if (!(state->ks_flags & TASK) && 422 taskqueue_enqueue(taskqueue_swi_giant, &state->ks_task) == 0) 423 state->ks_flags |= TASK; 424 } 425 } 426 427 state->ks_flags &= ~WRITE; 428 429 VKBD_UNLOCK(state); 430 431 return (error); 432 } 433 434 /* Process ioctl */ 435 static int 436 vkbd_dev_ioctl(struct cdev *dev, u_long cmd, caddr_t data, int flag, struct thread *td) 437 { 438 keyboard_t *kbd = VKBD_KEYBOARD(dev); 439 440 return ((kbd == NULL)? ENXIO : kbdd_ioctl(kbd, cmd, data)); 441 } 442 443 /* Poll device */ 444 static int 445 vkbd_dev_poll(struct cdev *dev, int events, struct thread *td) 446 { 447 vkbd_state_t *state = (vkbd_state_t *) dev->si_drv1; 448 vkbd_queue_t *q = NULL; 449 int revents = 0; 450 451 if (state == NULL) 452 return (ENXIO); 453 454 VKBD_LOCK(state); 455 456 q = &state->ks_inq; 457 458 if (events & (POLLIN | POLLRDNORM)) { 459 if (state->ks_flags & STATUS) 460 revents |= events & (POLLIN | POLLRDNORM); 461 else 462 selrecord(td, &state->ks_rsel); 463 } 464 465 if (events & (POLLOUT | POLLWRNORM)) { 466 if (q->cc < sizeof(q->q)/sizeof(q->q[0])) 467 revents |= events & (POLLOUT | POLLWRNORM); 468 else 469 selrecord(td, &state->ks_wsel); 470 } 471 472 VKBD_UNLOCK(state); 473 474 return (revents); 475 } 476 477 /* Interrupt handler */ 478 void 479 vkbd_dev_intr(void *xkbd, int pending) 480 { 481 keyboard_t *kbd = (keyboard_t *) xkbd; 482 vkbd_state_t *state = (vkbd_state_t *) kbd->kb_data; 483 484 kbdd_intr(kbd, NULL); 485 486 VKBD_LOCK(state); 487 488 state->ks_flags &= ~TASK; 489 wakeup(&state->ks_task); 490 491 VKBD_UNLOCK(state); 492 } 493 494 /* Set status change flags */ 495 static void 496 vkbd_status_changed(vkbd_state_t *state) 497 { 498 VKBD_LOCK_ASSERT(state, MA_OWNED); 499 500 if (!(state->ks_flags & STATUS)) { 501 state->ks_flags |= STATUS; 502 selwakeuppri(&state->ks_rsel, PZERO + 1); 503 wakeup(&state->ks_flags); 504 } 505 } 506 507 /* Check if we have data in the input queue */ 508 static int 509 vkbd_data_ready(vkbd_state_t *state) 510 { 511 VKBD_LOCK_ASSERT(state, MA_OWNED); 512 513 return (state->ks_inq.cc > 0); 514 } 515 516 /* Read one code from the input queue */ 517 static int 518 vkbd_data_read(vkbd_state_t *state, int wait) 519 { 520 vkbd_queue_t *q = &state->ks_inq; 521 int c; 522 523 VKBD_LOCK_ASSERT(state, MA_OWNED); 524 525 if (q->cc == 0) 526 return (-1); 527 528 /* get first code from the queue */ 529 q->cc --; 530 c = q->q[q->head ++]; 531 if (q->head == sizeof(q->q)/sizeof(q->q[0])) 532 q->head = 0; 533 534 /* wakeup ks_inq writers/poll()ers */ 535 selwakeuppri(&state->ks_wsel, PZERO + 1); 536 wakeup(q); 537 538 return (c); 539 } 540 541 /**************************************************************************** 542 **************************************************************************** 543 ** Keyboard driver 544 **************************************************************************** 545 ****************************************************************************/ 546 547 static int vkbd_configure(int flags); 548 static kbd_probe_t vkbd_probe; 549 static kbd_init_t vkbd_init; 550 static kbd_term_t vkbd_term; 551 static kbd_intr_t vkbd_intr; 552 static kbd_test_if_t vkbd_test_if; 553 static kbd_enable_t vkbd_enable; 554 static kbd_disable_t vkbd_disable; 555 static kbd_read_t vkbd_read; 556 static kbd_check_t vkbd_check; 557 static kbd_read_char_t vkbd_read_char; 558 static kbd_check_char_t vkbd_check_char; 559 static kbd_ioctl_t vkbd_ioctl; 560 static kbd_lock_t vkbd_lock; 561 static void vkbd_clear_state_locked(vkbd_state_t *state); 562 static kbd_clear_state_t vkbd_clear_state; 563 static kbd_get_state_t vkbd_get_state; 564 static kbd_set_state_t vkbd_set_state; 565 static kbd_poll_mode_t vkbd_poll; 566 567 static keyboard_switch_t vkbdsw = { 568 .probe = vkbd_probe, 569 .init = vkbd_init, 570 .term = vkbd_term, 571 .intr = vkbd_intr, 572 .test_if = vkbd_test_if, 573 .enable = vkbd_enable, 574 .disable = vkbd_disable, 575 .read = vkbd_read, 576 .check = vkbd_check, 577 .read_char = vkbd_read_char, 578 .check_char = vkbd_check_char, 579 .ioctl = vkbd_ioctl, 580 .lock = vkbd_lock, 581 .clear_state = vkbd_clear_state, 582 .get_state = vkbd_get_state, 583 .set_state = vkbd_set_state, 584 .get_fkeystr = genkbd_get_fkeystr, 585 .poll = vkbd_poll, 586 .diag = genkbd_diag, 587 }; 588 589 static int typematic(int delay, int rate); 590 static int typematic_delay(int delay); 591 static int typematic_rate(int rate); 592 593 /* Return the number of found keyboards */ 594 static int 595 vkbd_configure(int flags) 596 { 597 return (1); 598 } 599 600 /* Detect a keyboard */ 601 static int 602 vkbd_probe(int unit, void *arg, int flags) 603 { 604 return (0); 605 } 606 607 /* Reset and initialize the keyboard (stolen from atkbd.c) */ 608 static int 609 vkbd_init(int unit, keyboard_t **kbdp, void *arg, int flags) 610 { 611 keyboard_t *kbd = NULL; 612 vkbd_state_t *state = NULL; 613 keymap_t *keymap = NULL; 614 accentmap_t *accmap = NULL; 615 fkeytab_t *fkeymap = NULL; 616 int fkeymap_size, delay[2]; 617 int error, needfree; 618 619 if (*kbdp == NULL) { 620 *kbdp = kbd = malloc(sizeof(*kbd), M_VKBD, M_NOWAIT | M_ZERO); 621 state = malloc(sizeof(*state), M_VKBD, M_NOWAIT | M_ZERO); 622 keymap = malloc(sizeof(key_map), M_VKBD, M_NOWAIT); 623 accmap = malloc(sizeof(accent_map), M_VKBD, M_NOWAIT); 624 fkeymap = malloc(sizeof(fkey_tab), M_VKBD, M_NOWAIT); 625 fkeymap_size = sizeof(fkey_tab)/sizeof(fkey_tab[0]); 626 needfree = 1; 627 if ((kbd == NULL) || (state == NULL) || (keymap == NULL) || 628 (accmap == NULL) || (fkeymap == NULL)) { 629 error = ENOMEM; 630 goto bad; 631 } 632 633 VKBD_LOCK_INIT(state); 634 state->ks_inq.head = state->ks_inq.tail = state->ks_inq.cc = 0; 635 TASK_INIT(&state->ks_task, 0, vkbd_dev_intr, (void *) kbd); 636 } else if (KBD_IS_INITIALIZED(*kbdp) && KBD_IS_CONFIGURED(*kbdp)) { 637 return (0); 638 } else { 639 kbd = *kbdp; 640 state = (vkbd_state_t *) kbd->kb_data; 641 keymap = kbd->kb_keymap; 642 accmap = kbd->kb_accentmap; 643 fkeymap = kbd->kb_fkeytab; 644 fkeymap_size = kbd->kb_fkeytab_size; 645 needfree = 0; 646 } 647 648 if (!KBD_IS_PROBED(kbd)) { 649 kbd_init_struct(kbd, KEYBOARD_NAME, KB_OTHER, unit, flags, 0, 0); 650 bcopy(&key_map, keymap, sizeof(key_map)); 651 bcopy(&accent_map, accmap, sizeof(accent_map)); 652 bcopy(fkey_tab, fkeymap, 653 imin(fkeymap_size*sizeof(fkeymap[0]), sizeof(fkey_tab))); 654 kbd_set_maps(kbd, keymap, accmap, fkeymap, fkeymap_size); 655 kbd->kb_data = (void *)state; 656 657 KBD_FOUND_DEVICE(kbd); 658 KBD_PROBE_DONE(kbd); 659 660 VKBD_LOCK(state); 661 vkbd_clear_state_locked(state); 662 state->ks_mode = K_XLATE; 663 /* FIXME: set the initial value for lock keys in ks_state */ 664 VKBD_UNLOCK(state); 665 } 666 if (!KBD_IS_INITIALIZED(kbd) && !(flags & KB_CONF_PROBE_ONLY)) { 667 kbd->kb_config = flags & ~KB_CONF_PROBE_ONLY; 668 669 vkbd_ioctl(kbd, KDSETLED, (caddr_t)&state->ks_state); 670 delay[0] = kbd->kb_delay1; 671 delay[1] = kbd->kb_delay2; 672 vkbd_ioctl(kbd, KDSETREPEAT, (caddr_t)delay); 673 674 KBD_INIT_DONE(kbd); 675 } 676 if (!KBD_IS_CONFIGURED(kbd)) { 677 if (kbd_register(kbd) < 0) { 678 error = ENXIO; 679 goto bad; 680 } 681 KBD_CONFIG_DONE(kbd); 682 } 683 684 return (0); 685 bad: 686 if (needfree) { 687 if (state != NULL) 688 free(state, M_VKBD); 689 if (keymap != NULL) 690 free(keymap, M_VKBD); 691 if (accmap != NULL) 692 free(accmap, M_VKBD); 693 if (fkeymap != NULL) 694 free(fkeymap, M_VKBD); 695 if (kbd != NULL) { 696 free(kbd, M_VKBD); 697 *kbdp = NULL; /* insure ref doesn't leak to caller */ 698 } 699 } 700 return (error); 701 } 702 703 /* Finish using this keyboard */ 704 static int 705 vkbd_term(keyboard_t *kbd) 706 { 707 vkbd_state_t *state = (vkbd_state_t *) kbd->kb_data; 708 709 kbd_unregister(kbd); 710 711 VKBD_LOCK_DESTROY(state); 712 bzero(state, sizeof(*state)); 713 free(state, M_VKBD); 714 715 free(kbd->kb_keymap, M_VKBD); 716 free(kbd->kb_accentmap, M_VKBD); 717 free(kbd->kb_fkeytab, M_VKBD); 718 free(kbd, M_VKBD); 719 720 return (0); 721 } 722 723 /* Keyboard interrupt routine */ 724 static int 725 vkbd_intr(keyboard_t *kbd, void *arg) 726 { 727 int c; 728 729 if (KBD_IS_ACTIVE(kbd) && KBD_IS_BUSY(kbd)) { 730 /* let the callback function to process the input */ 731 (*kbd->kb_callback.kc_func)(kbd, KBDIO_KEYINPUT, 732 kbd->kb_callback.kc_arg); 733 } else { 734 /* read and discard the input; no one is waiting for input */ 735 do { 736 c = vkbd_read_char(kbd, FALSE); 737 } while (c != NOKEY); 738 } 739 740 return (0); 741 } 742 743 /* Test the interface to the device */ 744 static int 745 vkbd_test_if(keyboard_t *kbd) 746 { 747 return (0); 748 } 749 750 /* 751 * Enable the access to the device; until this function is called, 752 * the client cannot read from the keyboard. 753 */ 754 755 static int 756 vkbd_enable(keyboard_t *kbd) 757 { 758 KBD_ACTIVATE(kbd); 759 return (0); 760 } 761 762 /* Disallow the access to the device */ 763 static int 764 vkbd_disable(keyboard_t *kbd) 765 { 766 KBD_DEACTIVATE(kbd); 767 return (0); 768 } 769 770 /* Read one byte from the keyboard if it's allowed */ 771 static int 772 vkbd_read(keyboard_t *kbd, int wait) 773 { 774 vkbd_state_t *state = (vkbd_state_t *) kbd->kb_data; 775 int c; 776 777 VKBD_LOCK(state); 778 c = vkbd_data_read(state, wait); 779 VKBD_UNLOCK(state); 780 781 if (c != -1) 782 kbd->kb_count ++; 783 784 return (KBD_IS_ACTIVE(kbd)? c : -1); 785 } 786 787 /* Check if data is waiting */ 788 static int 789 vkbd_check(keyboard_t *kbd) 790 { 791 vkbd_state_t *state = NULL; 792 int ready; 793 794 if (!KBD_IS_ACTIVE(kbd)) 795 return (FALSE); 796 797 state = (vkbd_state_t *) kbd->kb_data; 798 799 VKBD_LOCK(state); 800 ready = vkbd_data_ready(state); 801 VKBD_UNLOCK(state); 802 803 return (ready); 804 } 805 806 /* Read char from the keyboard (stolen from atkbd.c) */ 807 static u_int 808 vkbd_read_char(keyboard_t *kbd, int wait) 809 { 810 vkbd_state_t *state = (vkbd_state_t *) kbd->kb_data; 811 u_int action; 812 int scancode, keycode; 813 814 VKBD_LOCK(state); 815 816 next_code: 817 818 /* do we have a composed char to return? */ 819 if (!(state->ks_flags & COMPOSE) && (state->ks_composed_char > 0)) { 820 action = state->ks_composed_char; 821 state->ks_composed_char = 0; 822 if (action > UCHAR_MAX) { 823 VKBD_UNLOCK(state); 824 return (ERRKEY); 825 } 826 827 VKBD_UNLOCK(state); 828 return (action); 829 } 830 831 /* see if there is something in the keyboard port */ 832 scancode = vkbd_data_read(state, wait); 833 if (scancode == -1) { 834 VKBD_UNLOCK(state); 835 return (NOKEY); 836 } 837 /* XXX FIXME: check for -1 if wait == 1! */ 838 839 kbd->kb_count ++; 840 841 /* return the byte as is for the K_RAW mode */ 842 if (state->ks_mode == K_RAW) { 843 VKBD_UNLOCK(state); 844 return (scancode); 845 } 846 847 /* translate the scan code into a keycode */ 848 keycode = scancode & 0x7F; 849 switch (state->ks_prefix) { 850 case 0x00: /* normal scancode */ 851 switch(scancode) { 852 case 0xB8: /* left alt (compose key) released */ 853 if (state->ks_flags & COMPOSE) { 854 state->ks_flags &= ~COMPOSE; 855 if (state->ks_composed_char > UCHAR_MAX) 856 state->ks_composed_char = 0; 857 } 858 break; 859 case 0x38: /* left alt (compose key) pressed */ 860 if (!(state->ks_flags & COMPOSE)) { 861 state->ks_flags |= COMPOSE; 862 state->ks_composed_char = 0; 863 } 864 break; 865 case 0xE0: 866 case 0xE1: 867 state->ks_prefix = scancode; 868 goto next_code; 869 } 870 break; 871 case 0xE0: /* 0xE0 prefix */ 872 state->ks_prefix = 0; 873 switch (keycode) { 874 case 0x1C: /* right enter key */ 875 keycode = 0x59; 876 break; 877 case 0x1D: /* right ctrl key */ 878 keycode = 0x5A; 879 break; 880 case 0x35: /* keypad divide key */ 881 keycode = 0x5B; 882 break; 883 case 0x37: /* print scrn key */ 884 keycode = 0x5C; 885 break; 886 case 0x38: /* right alt key (alt gr) */ 887 keycode = 0x5D; 888 break; 889 case 0x46: /* ctrl-pause/break on AT 101 (see below) */ 890 keycode = 0x68; 891 break; 892 case 0x47: /* grey home key */ 893 keycode = 0x5E; 894 break; 895 case 0x48: /* grey up arrow key */ 896 keycode = 0x5F; 897 break; 898 case 0x49: /* grey page up key */ 899 keycode = 0x60; 900 break; 901 case 0x4B: /* grey left arrow key */ 902 keycode = 0x61; 903 break; 904 case 0x4D: /* grey right arrow key */ 905 keycode = 0x62; 906 break; 907 case 0x4F: /* grey end key */ 908 keycode = 0x63; 909 break; 910 case 0x50: /* grey down arrow key */ 911 keycode = 0x64; 912 break; 913 case 0x51: /* grey page down key */ 914 keycode = 0x65; 915 break; 916 case 0x52: /* grey insert key */ 917 keycode = 0x66; 918 break; 919 case 0x53: /* grey delete key */ 920 keycode = 0x67; 921 break; 922 /* the following 3 are only used on the MS "Natural" keyboard */ 923 case 0x5b: /* left Window key */ 924 keycode = 0x69; 925 break; 926 case 0x5c: /* right Window key */ 927 keycode = 0x6a; 928 break; 929 case 0x5d: /* menu key */ 930 keycode = 0x6b; 931 break; 932 case 0x5e: /* power key */ 933 keycode = 0x6d; 934 break; 935 case 0x5f: /* sleep key */ 936 keycode = 0x6e; 937 break; 938 case 0x63: /* wake key */ 939 keycode = 0x6f; 940 break; 941 default: /* ignore everything else */ 942 goto next_code; 943 } 944 break; 945 case 0xE1: /* 0xE1 prefix */ 946 /* 947 * The pause/break key on the 101 keyboard produces: 948 * E1-1D-45 E1-9D-C5 949 * Ctrl-pause/break produces: 950 * E0-46 E0-C6 (See above.) 951 */ 952 state->ks_prefix = 0; 953 if (keycode == 0x1D) 954 state->ks_prefix = 0x1D; 955 goto next_code; 956 /* NOT REACHED */ 957 case 0x1D: /* pause / break */ 958 state->ks_prefix = 0; 959 if (keycode != 0x45) 960 goto next_code; 961 keycode = 0x68; 962 break; 963 } 964 965 if (kbd->kb_type == KB_84) { 966 switch (keycode) { 967 case 0x37: /* *(numpad)/print screen */ 968 if (state->ks_flags & SHIFTS) 969 keycode = 0x5c; /* print screen */ 970 break; 971 case 0x45: /* num lock/pause */ 972 if (state->ks_flags & CTLS) 973 keycode = 0x68; /* pause */ 974 break; 975 case 0x46: /* scroll lock/break */ 976 if (state->ks_flags & CTLS) 977 keycode = 0x6c; /* break */ 978 break; 979 } 980 } else if (kbd->kb_type == KB_101) { 981 switch (keycode) { 982 case 0x5c: /* print screen */ 983 if (state->ks_flags & ALTS) 984 keycode = 0x54; /* sysrq */ 985 break; 986 case 0x68: /* pause/break */ 987 if (state->ks_flags & CTLS) 988 keycode = 0x6c; /* break */ 989 break; 990 } 991 } 992 993 /* return the key code in the K_CODE mode */ 994 if (state->ks_mode == K_CODE) { 995 VKBD_UNLOCK(state); 996 return (keycode | (scancode & 0x80)); 997 } 998 999 /* compose a character code */ 1000 if (state->ks_flags & COMPOSE) { 1001 switch (keycode | (scancode & 0x80)) { 1002 /* key pressed, process it */ 1003 case 0x47: case 0x48: case 0x49: /* keypad 7,8,9 */ 1004 state->ks_composed_char *= 10; 1005 state->ks_composed_char += keycode - 0x40; 1006 if (state->ks_composed_char > UCHAR_MAX) { 1007 VKBD_UNLOCK(state); 1008 return (ERRKEY); 1009 } 1010 goto next_code; 1011 case 0x4B: case 0x4C: case 0x4D: /* keypad 4,5,6 */ 1012 state->ks_composed_char *= 10; 1013 state->ks_composed_char += keycode - 0x47; 1014 if (state->ks_composed_char > UCHAR_MAX) { 1015 VKBD_UNLOCK(state); 1016 return (ERRKEY); 1017 } 1018 goto next_code; 1019 case 0x4F: case 0x50: case 0x51: /* keypad 1,2,3 */ 1020 state->ks_composed_char *= 10; 1021 state->ks_composed_char += keycode - 0x4E; 1022 if (state->ks_composed_char > UCHAR_MAX) { 1023 VKBD_UNLOCK(state); 1024 return (ERRKEY); 1025 } 1026 goto next_code; 1027 case 0x52: /* keypad 0 */ 1028 state->ks_composed_char *= 10; 1029 if (state->ks_composed_char > UCHAR_MAX) { 1030 VKBD_UNLOCK(state); 1031 return (ERRKEY); 1032 } 1033 goto next_code; 1034 1035 /* key released, no interest here */ 1036 case 0xC7: case 0xC8: case 0xC9: /* keypad 7,8,9 */ 1037 case 0xCB: case 0xCC: case 0xCD: /* keypad 4,5,6 */ 1038 case 0xCF: case 0xD0: case 0xD1: /* keypad 1,2,3 */ 1039 case 0xD2: /* keypad 0 */ 1040 goto next_code; 1041 1042 case 0x38: /* left alt key */ 1043 break; 1044 1045 default: 1046 if (state->ks_composed_char > 0) { 1047 state->ks_flags &= ~COMPOSE; 1048 state->ks_composed_char = 0; 1049 VKBD_UNLOCK(state); 1050 return (ERRKEY); 1051 } 1052 break; 1053 } 1054 } 1055 1056 /* keycode to key action */ 1057 action = genkbd_keyaction(kbd, keycode, scancode & 0x80, 1058 &state->ks_state, &state->ks_accents); 1059 if (action == NOKEY) 1060 goto next_code; 1061 1062 VKBD_UNLOCK(state); 1063 1064 return (action); 1065 } 1066 1067 /* Check if char is waiting */ 1068 static int 1069 vkbd_check_char(keyboard_t *kbd) 1070 { 1071 vkbd_state_t *state = NULL; 1072 int ready; 1073 1074 if (!KBD_IS_ACTIVE(kbd)) 1075 return (FALSE); 1076 1077 state = (vkbd_state_t *) kbd->kb_data; 1078 1079 VKBD_LOCK(state); 1080 if (!(state->ks_flags & COMPOSE) && (state->ks_composed_char > 0)) 1081 ready = TRUE; 1082 else 1083 ready = vkbd_data_ready(state); 1084 VKBD_UNLOCK(state); 1085 1086 return (ready); 1087 } 1088 1089 /* Some useful control functions (stolen from atkbd.c) */ 1090 static int 1091 vkbd_ioctl(keyboard_t *kbd, u_long cmd, caddr_t arg) 1092 { 1093 vkbd_state_t *state = (vkbd_state_t *) kbd->kb_data; 1094 int i; 1095 #ifdef COMPAT_FREEBSD6 1096 int ival; 1097 #endif 1098 1099 VKBD_LOCK(state); 1100 1101 switch (cmd) { 1102 case KDGKBMODE: /* get keyboard mode */ 1103 *(int *)arg = state->ks_mode; 1104 break; 1105 1106 #ifdef COMPAT_FREEBSD6 1107 case _IO('K', 7): 1108 ival = IOCPARM_IVAL(arg); 1109 arg = (caddr_t)&ival; 1110 /* FALLTHROUGH */ 1111 #endif 1112 case KDSKBMODE: /* set keyboard mode */ 1113 switch (*(int *)arg) { 1114 case K_XLATE: 1115 if (state->ks_mode != K_XLATE) { 1116 /* make lock key state and LED state match */ 1117 state->ks_state &= ~LOCK_MASK; 1118 state->ks_state |= KBD_LED_VAL(kbd); 1119 vkbd_status_changed(state); 1120 } 1121 /* FALLTHROUGH */ 1122 1123 case K_RAW: 1124 case K_CODE: 1125 if (state->ks_mode != *(int *)arg) { 1126 vkbd_clear_state_locked(state); 1127 state->ks_mode = *(int *)arg; 1128 vkbd_status_changed(state); 1129 } 1130 break; 1131 1132 default: 1133 VKBD_UNLOCK(state); 1134 return (EINVAL); 1135 } 1136 break; 1137 1138 case KDGETLED: /* get keyboard LED */ 1139 *(int *)arg = KBD_LED_VAL(kbd); 1140 break; 1141 1142 #ifdef COMPAT_FREEBSD6 1143 case _IO('K', 66): 1144 ival = IOCPARM_IVAL(arg); 1145 arg = (caddr_t)&ival; 1146 /* FALLTHROUGH */ 1147 #endif 1148 case KDSETLED: /* set keyboard LED */ 1149 /* NOTE: lock key state in ks_state won't be changed */ 1150 if (*(int *)arg & ~LOCK_MASK) { 1151 VKBD_UNLOCK(state); 1152 return (EINVAL); 1153 } 1154 1155 i = *(int *)arg; 1156 /* replace CAPS LED with ALTGR LED for ALTGR keyboards */ 1157 if (state->ks_mode == K_XLATE && 1158 kbd->kb_keymap->n_keys > ALTGR_OFFSET) { 1159 if (i & ALKED) 1160 i |= CLKED; 1161 else 1162 i &= ~CLKED; 1163 } 1164 1165 KBD_LED_VAL(kbd) = *(int *)arg; 1166 vkbd_status_changed(state); 1167 break; 1168 1169 case KDGKBSTATE: /* get lock key state */ 1170 *(int *)arg = state->ks_state & LOCK_MASK; 1171 break; 1172 1173 #ifdef COMPAT_FREEBSD6 1174 case _IO('K', 20): 1175 ival = IOCPARM_IVAL(arg); 1176 arg = (caddr_t)&ival; 1177 /* FALLTHROUGH */ 1178 #endif 1179 case KDSKBSTATE: /* set lock key state */ 1180 if (*(int *)arg & ~LOCK_MASK) { 1181 VKBD_UNLOCK(state); 1182 return (EINVAL); 1183 } 1184 state->ks_state &= ~LOCK_MASK; 1185 state->ks_state |= *(int *)arg; 1186 vkbd_status_changed(state); 1187 VKBD_UNLOCK(state); 1188 /* set LEDs and quit */ 1189 return (vkbd_ioctl(kbd, KDSETLED, arg)); 1190 1191 case KDSETREPEAT: /* set keyboard repeat rate (new interface) */ 1192 i = typematic(((int *)arg)[0], ((int *)arg)[1]); 1193 kbd->kb_delay1 = typematic_delay(i); 1194 kbd->kb_delay2 = typematic_rate(i); 1195 vkbd_status_changed(state); 1196 break; 1197 1198 #ifdef COMPAT_FREEBSD6 1199 case _IO('K', 67): 1200 ival = IOCPARM_IVAL(arg); 1201 arg = (caddr_t)&ival; 1202 /* FALLTHROUGH */ 1203 #endif 1204 case KDSETRAD: /* set keyboard repeat rate (old interface) */ 1205 kbd->kb_delay1 = typematic_delay(*(int *)arg); 1206 kbd->kb_delay2 = typematic_rate(*(int *)arg); 1207 vkbd_status_changed(state); 1208 break; 1209 1210 case PIO_KEYMAP: /* set keyboard translation table */ 1211 case PIO_KEYMAPENT: /* set keyboard translation table entry */ 1212 case PIO_DEADKEYMAP: /* set accent key translation table */ 1213 state->ks_accents = 0; 1214 /* FALLTHROUGH */ 1215 1216 default: 1217 VKBD_UNLOCK(state); 1218 return (genkbd_commonioctl(kbd, cmd, arg)); 1219 } 1220 1221 VKBD_UNLOCK(state); 1222 1223 return (0); 1224 } 1225 1226 /* Lock the access to the keyboard */ 1227 static int 1228 vkbd_lock(keyboard_t *kbd, int lock) 1229 { 1230 return (1); /* XXX */ 1231 } 1232 1233 /* Clear the internal state of the keyboard */ 1234 static void 1235 vkbd_clear_state_locked(vkbd_state_t *state) 1236 { 1237 VKBD_LOCK_ASSERT(state, MA_OWNED); 1238 1239 state->ks_flags &= ~COMPOSE; 1240 state->ks_polling = 0; 1241 state->ks_state &= LOCK_MASK; /* preserve locking key state */ 1242 state->ks_accents = 0; 1243 state->ks_composed_char = 0; 1244 /* state->ks_prefix = 0; XXX */ 1245 1246 /* flush ks_inq and wakeup writers/poll()ers */ 1247 state->ks_inq.head = state->ks_inq.tail = state->ks_inq.cc = 0; 1248 selwakeuppri(&state->ks_wsel, PZERO + 1); 1249 wakeup(&state->ks_inq); 1250 } 1251 1252 static void 1253 vkbd_clear_state(keyboard_t *kbd) 1254 { 1255 vkbd_state_t *state = (vkbd_state_t *) kbd->kb_data; 1256 1257 VKBD_LOCK(state); 1258 vkbd_clear_state_locked(state); 1259 VKBD_UNLOCK(state); 1260 } 1261 1262 /* Save the internal state */ 1263 static int 1264 vkbd_get_state(keyboard_t *kbd, void *buf, size_t len) 1265 { 1266 if (len == 0) 1267 return (sizeof(vkbd_state_t)); 1268 if (len < sizeof(vkbd_state_t)) 1269 return (-1); 1270 bcopy(kbd->kb_data, buf, sizeof(vkbd_state_t)); /* XXX locking? */ 1271 return (0); 1272 } 1273 1274 /* Set the internal state */ 1275 static int 1276 vkbd_set_state(keyboard_t *kbd, void *buf, size_t len) 1277 { 1278 if (len < sizeof(vkbd_state_t)) 1279 return (ENOMEM); 1280 bcopy(buf, kbd->kb_data, sizeof(vkbd_state_t)); /* XXX locking? */ 1281 return (0); 1282 } 1283 1284 /* Set polling */ 1285 static int 1286 vkbd_poll(keyboard_t *kbd, int on) 1287 { 1288 vkbd_state_t *state = NULL; 1289 1290 state = (vkbd_state_t *) kbd->kb_data; 1291 1292 VKBD_LOCK(state); 1293 1294 if (on) 1295 state->ks_polling ++; 1296 else 1297 state->ks_polling --; 1298 1299 VKBD_UNLOCK(state); 1300 1301 return (0); 1302 } 1303 1304 /* 1305 * Local functions 1306 */ 1307 1308 static int delays[] = { 250, 500, 750, 1000 }; 1309 static int rates[] = { 34, 38, 42, 46, 50, 55, 59, 63, 1310 68, 76, 84, 92, 100, 110, 118, 126, 1311 136, 152, 168, 184, 200, 220, 236, 252, 1312 272, 304, 336, 368, 400, 440, 472, 504 }; 1313 1314 static int 1315 typematic_delay(int i) 1316 { 1317 return (delays[(i >> 5) & 3]); 1318 } 1319 1320 static int 1321 typematic_rate(int i) 1322 { 1323 return (rates[i & 0x1f]); 1324 } 1325 1326 static int 1327 typematic(int delay, int rate) 1328 { 1329 int value; 1330 int i; 1331 1332 for (i = sizeof(delays)/sizeof(delays[0]) - 1; i > 0; i --) { 1333 if (delay >= delays[i]) 1334 break; 1335 } 1336 value = i << 5; 1337 for (i = sizeof(rates)/sizeof(rates[0]) - 1; i > 0; i --) { 1338 if (rate >= rates[i]) 1339 break; 1340 } 1341 value |= i; 1342 return (value); 1343 } 1344 1345 /***************************************************************************** 1346 ***************************************************************************** 1347 ** Module 1348 ***************************************************************************** 1349 *****************************************************************************/ 1350 1351 KEYBOARD_DRIVER(vkbd, vkbdsw, vkbd_configure); 1352 1353 static int 1354 vkbd_modevent(module_t mod, int type, void *data) 1355 { 1356 static eventhandler_tag tag; 1357 1358 switch (type) { 1359 case MOD_LOAD: 1360 clone_setup(&vkbd_dev_clones); 1361 tag = EVENTHANDLER_REGISTER(dev_clone, vkbd_dev_clone, 0, 1000); 1362 if (tag == NULL) { 1363 clone_cleanup(&vkbd_dev_clones); 1364 return (ENOMEM); 1365 } 1366 kbd_add_driver(&vkbd_kbd_driver); 1367 break; 1368 1369 case MOD_UNLOAD: 1370 kbd_delete_driver(&vkbd_kbd_driver); 1371 EVENTHANDLER_DEREGISTER(dev_clone, tag); 1372 clone_cleanup(&vkbd_dev_clones); 1373 break; 1374 1375 default: 1376 return (EOPNOTSUPP); 1377 } 1378 1379 return (0); 1380 } 1381 1382 DEV_MODULE(vkbd, vkbd_modevent, NULL); 1383 1384