1 /*- 2 * Copyright (c) 2014 Jakub Wojciech Klama <jceel@FreeBSD.org> 3 * Copyright (c) 2015-2016 Vladimir Kondratyev <wulf@FreeBSD.org> 4 * All rights reserved. 5 * 6 * Redistribution and use in source and binary forms, with or without 7 * modification, are permitted provided that the following conditions 8 * are met: 9 * 1. Redistributions of source code must retain the above copyright 10 * notice, this list of conditions and the following disclaimer. 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 AUTHOR AND CONTRIBUTORS ``AS IS'' AND 16 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 17 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 18 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 19 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 20 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 21 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 22 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 23 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 24 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 25 * SUCH DAMAGE. 26 * 27 * $FreeBSD$ 28 */ 29 30 #include "opt_evdev.h" 31 32 #include <sys/param.h> 33 #include <sys/bitstring.h> 34 #include <sys/conf.h> 35 #include <sys/kernel.h> 36 #include <sys/malloc.h> 37 #include <sys/module.h> 38 #include <sys/sysctl.h> 39 #include <sys/systm.h> 40 41 #include <dev/evdev/evdev.h> 42 #include <dev/evdev/evdev_private.h> 43 #include <dev/evdev/input.h> 44 45 #ifdef EVDEV_DEBUG 46 #define debugf(evdev, fmt, args...) printf("evdev: " fmt "\n", ##args) 47 #else 48 #define debugf(evdev, fmt, args...) 49 #endif 50 51 #ifdef FEATURE 52 FEATURE(evdev, "Input event devices support"); 53 #ifdef EVDEV_SUPPORT 54 FEATURE(evdev_support, "Evdev support in hybrid drivers"); 55 #endif 56 #endif 57 58 enum evdev_sparse_result 59 { 60 EV_SKIP_EVENT, /* Event value not changed */ 61 EV_REPORT_EVENT, /* Event value changed */ 62 EV_REPORT_MT_SLOT, /* Event value and MT slot number changed */ 63 }; 64 65 MALLOC_DEFINE(M_EVDEV, "evdev", "evdev memory"); 66 67 int evdev_rcpt_mask = EVDEV_RCPT_SYSMOUSE | EVDEV_RCPT_KBDMUX; 68 int evdev_sysmouse_t_axis = 0; 69 70 #ifdef EVDEV_SUPPORT 71 SYSCTL_NODE(_kern, OID_AUTO, evdev, CTLFLAG_RW, 0, "Evdev args"); 72 SYSCTL_INT(_kern_evdev, OID_AUTO, rcpt_mask, CTLFLAG_RW, &evdev_rcpt_mask, 0, 73 "Who is receiving events: bit0 - sysmouse, bit1 - kbdmux, " 74 "bit2 - mouse hardware, bit3 - keyboard hardware"); 75 SYSCTL_INT(_kern_evdev, OID_AUTO, sysmouse_t_axis, CTLFLAG_RW, 76 &evdev_sysmouse_t_axis, 0, "Extract T-axis from 0-none, 1-ums, 2-psm"); 77 #endif 78 79 static void evdev_start_repeat(struct evdev_dev *, uint16_t); 80 static void evdev_stop_repeat(struct evdev_dev *); 81 static int evdev_check_event(struct evdev_dev *, uint16_t, uint16_t, int32_t); 82 83 static inline void 84 bit_change(bitstr_t *bitstr, int bit, int value) 85 { 86 if (value) 87 bit_set(bitstr, bit); 88 else 89 bit_clear(bitstr, bit); 90 } 91 92 struct evdev_dev * 93 evdev_alloc(void) 94 { 95 96 return malloc(sizeof(struct evdev_dev), M_EVDEV, M_WAITOK | M_ZERO); 97 } 98 99 void 100 evdev_free(struct evdev_dev *evdev) 101 { 102 103 if (evdev != NULL && evdev->ev_cdev != NULL && 104 evdev->ev_cdev->si_drv1 != NULL) 105 evdev_unregister(evdev); 106 107 free(evdev, M_EVDEV); 108 } 109 110 static struct input_absinfo * 111 evdev_alloc_absinfo(void) 112 { 113 114 return (malloc(sizeof(struct input_absinfo) * ABS_CNT, M_EVDEV, 115 M_WAITOK | M_ZERO)); 116 } 117 118 static void 119 evdev_free_absinfo(struct input_absinfo *absinfo) 120 { 121 122 free(absinfo, M_EVDEV); 123 } 124 125 int 126 evdev_set_report_size(struct evdev_dev *evdev, size_t report_size) 127 { 128 if (report_size > KEY_CNT + REL_CNT + ABS_CNT + MAX_MT_SLOTS * MT_CNT + 129 MSC_CNT + LED_CNT + SND_CNT + SW_CNT + FF_CNT) 130 return (EINVAL); 131 132 evdev->ev_report_size = report_size; 133 return (0); 134 } 135 136 static size_t 137 evdev_estimate_report_size(struct evdev_dev *evdev) 138 { 139 size_t size = 0; 140 int res; 141 142 /* 143 * Keyboards generate one event per report but other devices with 144 * buttons like mouses can report events simultaneously 145 */ 146 bit_ffs_at(evdev->ev_key_flags, KEY_OK, KEY_CNT - KEY_OK, &res); 147 if (res == -1) 148 bit_ffs(evdev->ev_key_flags, BTN_MISC, &res); 149 size += (res != -1); 150 bit_count(evdev->ev_key_flags, BTN_MISC, KEY_OK - BTN_MISC, &res); 151 size += res; 152 153 /* All relative axes can be reported simultaneously */ 154 bit_count(evdev->ev_rel_flags, 0, REL_CNT, &res); 155 size += res; 156 157 /* 158 * All absolute axes can be reported simultaneously. 159 * Multitouch axes can be reported ABS_MT_SLOT times 160 */ 161 if (evdev->ev_absinfo != NULL) { 162 bit_count(evdev->ev_abs_flags, 0, ABS_CNT, &res); 163 size += res; 164 bit_count(evdev->ev_abs_flags, ABS_MT_FIRST, MT_CNT, &res); 165 if (res > 0) { 166 res++; /* ABS_MT_SLOT or SYN_MT_REPORT */ 167 if (bit_test(evdev->ev_abs_flags, ABS_MT_SLOT)) 168 /* MT type B */ 169 size += res * MAXIMAL_MT_SLOT(evdev); 170 else 171 /* MT type A */ 172 size += res * (MAX_MT_REPORTS - 1); 173 } 174 } 175 176 /* All misc events can be reported simultaneously */ 177 bit_count(evdev->ev_msc_flags, 0, MSC_CNT, &res); 178 size += res; 179 180 /* All leds can be reported simultaneously */ 181 bit_count(evdev->ev_led_flags, 0, LED_CNT, &res); 182 size += res; 183 184 /* Assume other events are generated once per report */ 185 bit_ffs(evdev->ev_snd_flags, SND_CNT, &res); 186 size += (res != -1); 187 188 bit_ffs(evdev->ev_sw_flags, SW_CNT, &res); 189 size += (res != -1); 190 191 /* XXX: FF part is not implemented yet */ 192 193 size++; /* SYN_REPORT */ 194 return (size); 195 } 196 197 static int 198 evdev_register_common(struct evdev_dev *evdev) 199 { 200 int ret; 201 202 debugf(evdev, "%s: registered evdev provider: %s <%s>\n", 203 evdev->ev_shortname, evdev->ev_name, evdev->ev_serial); 204 205 /* Initialize internal structures */ 206 LIST_INIT(&evdev->ev_clients); 207 208 if (evdev_event_supported(evdev, EV_REP) && 209 bit_test(evdev->ev_flags, EVDEV_FLAG_SOFTREPEAT)) { 210 /* Initialize callout */ 211 callout_init_mtx(&evdev->ev_rep_callout, &evdev->ev_mtx, 0); 212 213 if (evdev->ev_rep[REP_DELAY] == 0 && 214 evdev->ev_rep[REP_PERIOD] == 0) { 215 /* Supply default values */ 216 evdev->ev_rep[REP_DELAY] = 250; 217 evdev->ev_rep[REP_PERIOD] = 33; 218 } 219 } 220 221 /* Initialize multitouch protocol type B states */ 222 if (bit_test(evdev->ev_abs_flags, ABS_MT_SLOT) && 223 evdev->ev_absinfo != NULL && MAXIMAL_MT_SLOT(evdev) > 0) 224 evdev_mt_init(evdev); 225 226 /* Estimate maximum report size */ 227 if (evdev->ev_report_size == 0) { 228 ret = evdev_set_report_size(evdev, 229 evdev_estimate_report_size(evdev)); 230 if (ret != 0) 231 goto bail_out; 232 } 233 234 /* Create char device node */ 235 ret = evdev_cdev_create(evdev); 236 bail_out: 237 return (ret); 238 } 239 240 int 241 evdev_register(struct evdev_dev *evdev) 242 { 243 int ret; 244 245 evdev->ev_lock_type = EV_LOCK_INTERNAL; 246 evdev->ev_lock = &evdev->ev_mtx; 247 mtx_init(&evdev->ev_mtx, "evmtx", NULL, MTX_DEF); 248 249 ret = evdev_register_common(evdev); 250 if (ret != 0) 251 mtx_destroy(&evdev->ev_mtx); 252 253 return (ret); 254 } 255 256 int 257 evdev_register_mtx(struct evdev_dev *evdev, struct mtx *mtx) 258 { 259 260 evdev->ev_lock_type = EV_LOCK_MTX; 261 evdev->ev_lock = mtx; 262 return (evdev_register_common(evdev)); 263 } 264 265 int 266 evdev_unregister(struct evdev_dev *evdev) 267 { 268 struct evdev_client *client; 269 int ret; 270 debugf(evdev, "%s: unregistered evdev provider: %s\n", 271 evdev->ev_shortname, evdev->ev_name); 272 273 EVDEV_LOCK(evdev); 274 evdev->ev_cdev->si_drv1 = NULL; 275 /* Wake up sleepers */ 276 LIST_FOREACH(client, &evdev->ev_clients, ec_link) { 277 evdev_revoke_client(client); 278 evdev_dispose_client(evdev, client); 279 EVDEV_CLIENT_LOCKQ(client); 280 evdev_notify_event(client); 281 EVDEV_CLIENT_UNLOCKQ(client); 282 } 283 EVDEV_UNLOCK(evdev); 284 285 /* destroy_dev can sleep so release lock */ 286 ret = evdev_cdev_destroy(evdev); 287 evdev->ev_cdev = NULL; 288 if (ret == 0 && evdev->ev_lock_type == EV_LOCK_INTERNAL) 289 mtx_destroy(&evdev->ev_mtx); 290 291 evdev_free_absinfo(evdev->ev_absinfo); 292 evdev_mt_free(evdev); 293 294 return (ret); 295 } 296 297 inline void 298 evdev_set_name(struct evdev_dev *evdev, const char *name) 299 { 300 301 snprintf(evdev->ev_name, NAMELEN, "%s", name); 302 } 303 304 inline void 305 evdev_set_id(struct evdev_dev *evdev, uint16_t bustype, uint16_t vendor, 306 uint16_t product, uint16_t version) 307 { 308 309 evdev->ev_id = (struct input_id) { 310 .bustype = bustype, 311 .vendor = vendor, 312 .product = product, 313 .version = version 314 }; 315 } 316 317 inline void 318 evdev_set_phys(struct evdev_dev *evdev, const char *name) 319 { 320 321 snprintf(evdev->ev_shortname, NAMELEN, "%s", name); 322 } 323 324 inline void 325 evdev_set_serial(struct evdev_dev *evdev, const char *serial) 326 { 327 328 snprintf(evdev->ev_serial, NAMELEN, "%s", serial); 329 } 330 331 inline void 332 evdev_set_methods(struct evdev_dev *evdev, void *softc, 333 const struct evdev_methods *methods) 334 { 335 336 evdev->ev_methods = methods; 337 evdev->ev_softc = softc; 338 } 339 340 inline void 341 evdev_support_prop(struct evdev_dev *evdev, uint16_t prop) 342 { 343 344 KASSERT(prop < INPUT_PROP_CNT, ("invalid evdev input property")); 345 bit_set(evdev->ev_prop_flags, prop); 346 } 347 348 inline void 349 evdev_support_event(struct evdev_dev *evdev, uint16_t type) 350 { 351 352 KASSERT(type < EV_CNT, ("invalid evdev event property")); 353 bit_set(evdev->ev_type_flags, type); 354 } 355 356 inline void 357 evdev_support_key(struct evdev_dev *evdev, uint16_t code) 358 { 359 360 KASSERT(code < KEY_CNT, ("invalid evdev key property")); 361 bit_set(evdev->ev_key_flags, code); 362 } 363 364 inline void 365 evdev_support_rel(struct evdev_dev *evdev, uint16_t code) 366 { 367 368 KASSERT(code < REL_CNT, ("invalid evdev rel property")); 369 bit_set(evdev->ev_rel_flags, code); 370 } 371 372 inline void 373 evdev_support_abs(struct evdev_dev *evdev, uint16_t code, int32_t value, 374 int32_t minimum, int32_t maximum, int32_t fuzz, int32_t flat, 375 int32_t resolution) 376 { 377 struct input_absinfo absinfo; 378 379 KASSERT(code < ABS_CNT, ("invalid evdev abs property")); 380 381 absinfo = (struct input_absinfo) { 382 .value = value, 383 .minimum = minimum, 384 .maximum = maximum, 385 .fuzz = fuzz, 386 .flat = flat, 387 .resolution = resolution, 388 }; 389 evdev_set_abs_bit(evdev, code); 390 evdev_set_absinfo(evdev, code, &absinfo); 391 } 392 393 inline void 394 evdev_set_abs_bit(struct evdev_dev *evdev, uint16_t code) 395 { 396 397 KASSERT(code < ABS_CNT, ("invalid evdev abs property")); 398 if (evdev->ev_absinfo == NULL) 399 evdev->ev_absinfo = evdev_alloc_absinfo(); 400 bit_set(evdev->ev_abs_flags, code); 401 } 402 403 inline void 404 evdev_support_msc(struct evdev_dev *evdev, uint16_t code) 405 { 406 407 KASSERT(code < MSC_CNT, ("invalid evdev msc property")); 408 bit_set(evdev->ev_msc_flags, code); 409 } 410 411 412 inline void 413 evdev_support_led(struct evdev_dev *evdev, uint16_t code) 414 { 415 416 KASSERT(code < LED_CNT, ("invalid evdev led property")); 417 bit_set(evdev->ev_led_flags, code); 418 } 419 420 inline void 421 evdev_support_snd(struct evdev_dev *evdev, uint16_t code) 422 { 423 424 KASSERT(code < SND_CNT, ("invalid evdev snd property")); 425 bit_set(evdev->ev_snd_flags, code); 426 } 427 428 inline void 429 evdev_support_sw(struct evdev_dev *evdev, uint16_t code) 430 { 431 432 KASSERT(code < SW_CNT, ("invalid evdev sw property")); 433 bit_set(evdev->ev_sw_flags, code); 434 } 435 436 bool 437 evdev_event_supported(struct evdev_dev *evdev, uint16_t type) 438 { 439 440 KASSERT(type < EV_CNT, ("invalid evdev event property")); 441 return (bit_test(evdev->ev_type_flags, type)); 442 } 443 444 inline void 445 evdev_set_absinfo(struct evdev_dev *evdev, uint16_t axis, 446 struct input_absinfo *absinfo) 447 { 448 449 KASSERT(axis < ABS_CNT, ("invalid evdev abs property")); 450 451 if (axis == ABS_MT_SLOT && 452 (absinfo->maximum < 1 || absinfo->maximum >= MAX_MT_SLOTS)) 453 return; 454 455 if (evdev->ev_absinfo == NULL) 456 evdev->ev_absinfo = evdev_alloc_absinfo(); 457 458 if (axis == ABS_MT_SLOT) 459 evdev->ev_absinfo[ABS_MT_SLOT].maximum = absinfo->maximum; 460 else 461 memcpy(&evdev->ev_absinfo[axis], absinfo, 462 sizeof(struct input_absinfo)); 463 } 464 465 inline void 466 evdev_set_repeat_params(struct evdev_dev *evdev, uint16_t property, int value) 467 { 468 469 KASSERT(property < REP_CNT, ("invalid evdev repeat property")); 470 evdev->ev_rep[property] = value; 471 } 472 473 inline void 474 evdev_set_flag(struct evdev_dev *evdev, uint16_t flag) 475 { 476 477 KASSERT(flag < EVDEV_FLAG_CNT, ("invalid evdev flag property")); 478 bit_set(evdev->ev_flags, flag); 479 } 480 481 static int 482 evdev_check_event(struct evdev_dev *evdev, uint16_t type, uint16_t code, 483 int32_t value) 484 { 485 486 if (type >= EV_CNT) 487 return (EINVAL); 488 489 /* Allow SYN events implicitly */ 490 if (type != EV_SYN && !evdev_event_supported(evdev, type)) 491 return (EINVAL); 492 493 switch (type) { 494 case EV_SYN: 495 if (code >= SYN_CNT) 496 return (EINVAL); 497 break; 498 499 case EV_KEY: 500 if (code >= KEY_CNT) 501 return (EINVAL); 502 if (!bit_test(evdev->ev_key_flags, code)) 503 return (EINVAL); 504 break; 505 506 case EV_REL: 507 if (code >= REL_CNT) 508 return (EINVAL); 509 if (!bit_test(evdev->ev_rel_flags, code)) 510 return (EINVAL); 511 break; 512 513 case EV_ABS: 514 if (code >= ABS_CNT) 515 return (EINVAL); 516 if (!bit_test(evdev->ev_abs_flags, code)) 517 return (EINVAL); 518 if (code == ABS_MT_SLOT && 519 (value < 0 || value > MAXIMAL_MT_SLOT(evdev))) 520 return (EINVAL); 521 if (ABS_IS_MT(code) && evdev->ev_mt == NULL && 522 bit_test(evdev->ev_abs_flags, ABS_MT_SLOT)) 523 return (EINVAL); 524 break; 525 526 case EV_MSC: 527 if (code >= MSC_CNT) 528 return (EINVAL); 529 if (!bit_test(evdev->ev_msc_flags, code)) 530 return (EINVAL); 531 break; 532 533 case EV_LED: 534 if (code >= LED_CNT) 535 return (EINVAL); 536 if (!bit_test(evdev->ev_led_flags, code)) 537 return (EINVAL); 538 break; 539 540 case EV_SND: 541 if (code >= SND_CNT) 542 return (EINVAL); 543 if (!bit_test(evdev->ev_snd_flags, code)) 544 return (EINVAL); 545 break; 546 547 case EV_SW: 548 if (code >= SW_CNT) 549 return (EINVAL); 550 if (!bit_test(evdev->ev_sw_flags, code)) 551 return (EINVAL); 552 break; 553 554 case EV_REP: 555 if (code >= REP_CNT) 556 return (EINVAL); 557 break; 558 559 default: 560 return (EINVAL); 561 } 562 563 return (0); 564 } 565 566 static void 567 evdev_modify_event(struct evdev_dev *evdev, uint16_t type, uint16_t code, 568 int32_t *value) 569 { 570 571 EVDEV_LOCK_ASSERT(evdev); 572 573 switch (type) { 574 case EV_KEY: 575 if (!evdev_event_supported(evdev, EV_REP)) 576 break; 577 578 if (!bit_test(evdev->ev_flags, EVDEV_FLAG_SOFTREPEAT)) { 579 /* Detect driver key repeats. */ 580 if (bit_test(evdev->ev_key_states, code) && 581 *value == KEY_EVENT_DOWN) 582 *value = KEY_EVENT_REPEAT; 583 } else { 584 /* Start/stop callout for evdev repeats */ 585 if (bit_test(evdev->ev_key_states, code) == !*value && 586 !LIST_EMPTY(&evdev->ev_clients)) { 587 if (*value == KEY_EVENT_DOWN) 588 evdev_start_repeat(evdev, code); 589 else 590 evdev_stop_repeat(evdev); 591 } 592 } 593 break; 594 595 case EV_ABS: 596 /* TBD: implement fuzz */ 597 break; 598 } 599 } 600 601 static enum evdev_sparse_result 602 evdev_sparse_event(struct evdev_dev *evdev, uint16_t type, uint16_t code, 603 int32_t value) 604 { 605 int32_t last_mt_slot; 606 607 EVDEV_LOCK_ASSERT(evdev); 608 609 /* 610 * For certain event types, update device state bits 611 * and convert level reporting to edge reporting 612 */ 613 switch (type) { 614 case EV_KEY: 615 switch (value) { 616 case KEY_EVENT_UP: 617 case KEY_EVENT_DOWN: 618 if (bit_test(evdev->ev_key_states, code) == value) 619 return (EV_SKIP_EVENT); 620 bit_change(evdev->ev_key_states, code, value); 621 break; 622 623 case KEY_EVENT_REPEAT: 624 if (bit_test(evdev->ev_key_states, code) == 0 || 625 !evdev_event_supported(evdev, EV_REP)) 626 return (EV_SKIP_EVENT); 627 break; 628 629 default: 630 return (EV_SKIP_EVENT); 631 } 632 break; 633 634 case EV_LED: 635 if (bit_test(evdev->ev_led_states, code) == value) 636 return (EV_SKIP_EVENT); 637 bit_change(evdev->ev_led_states, code, value); 638 break; 639 640 case EV_SND: 641 bit_change(evdev->ev_snd_states, code, value); 642 break; 643 644 case EV_SW: 645 if (bit_test(evdev->ev_sw_states, code) == value) 646 return (EV_SKIP_EVENT); 647 bit_change(evdev->ev_sw_states, code, value); 648 break; 649 650 case EV_REP: 651 if (evdev->ev_rep[code] == value) 652 return (EV_SKIP_EVENT); 653 evdev_set_repeat_params(evdev, code, value); 654 break; 655 656 case EV_REL: 657 if (value == 0) 658 return (EV_SKIP_EVENT); 659 break; 660 661 /* For EV_ABS, save last value in absinfo and ev_mt_states */ 662 case EV_ABS: 663 switch (code) { 664 case ABS_MT_SLOT: 665 /* Postpone ABS_MT_SLOT till next event */ 666 evdev_set_last_mt_slot(evdev, value); 667 return (EV_SKIP_EVENT); 668 669 case ABS_MT_FIRST ... ABS_MT_LAST: 670 /* Pass MT protocol type A events as is */ 671 if (!bit_test(evdev->ev_abs_flags, ABS_MT_SLOT)) 672 break; 673 /* Don`t repeat MT protocol type B events */ 674 last_mt_slot = evdev_get_last_mt_slot(evdev); 675 if (evdev_get_mt_value(evdev, last_mt_slot, code) 676 == value) 677 return (EV_SKIP_EVENT); 678 evdev_set_mt_value(evdev, last_mt_slot, code, value); 679 if (last_mt_slot != CURRENT_MT_SLOT(evdev)) { 680 CURRENT_MT_SLOT(evdev) = last_mt_slot; 681 evdev->ev_report_opened = true; 682 return (EV_REPORT_MT_SLOT); 683 } 684 break; 685 686 default: 687 if (evdev->ev_absinfo[code].value == value) 688 return (EV_SKIP_EVENT); 689 evdev->ev_absinfo[code].value = value; 690 } 691 break; 692 693 case EV_SYN: 694 if (code == SYN_REPORT) { 695 /* Count empty reports as well as non empty */ 696 evdev->ev_report_count++; 697 /* Skip empty reports */ 698 if (!evdev->ev_report_opened) 699 return (EV_SKIP_EVENT); 700 evdev->ev_report_opened = false; 701 return (EV_REPORT_EVENT); 702 } 703 break; 704 } 705 706 evdev->ev_report_opened = true; 707 return (EV_REPORT_EVENT); 708 } 709 710 static void 711 evdev_propagate_event(struct evdev_dev *evdev, uint16_t type, uint16_t code, 712 int32_t value) 713 { 714 struct evdev_client *client; 715 716 debugf(evdev, "%s pushed event %d/%d/%d", 717 evdev->ev_shortname, type, code, value); 718 719 EVDEV_LOCK_ASSERT(evdev); 720 721 /* Propagate event through all clients */ 722 LIST_FOREACH(client, &evdev->ev_clients, ec_link) { 723 if (evdev->ev_grabber != NULL && evdev->ev_grabber != client) 724 continue; 725 726 EVDEV_CLIENT_LOCKQ(client); 727 evdev_client_push(client, type, code, value); 728 if (type == EV_SYN && code == SYN_REPORT) 729 evdev_notify_event(client); 730 EVDEV_CLIENT_UNLOCKQ(client); 731 } 732 733 evdev->ev_event_count++; 734 } 735 736 void 737 evdev_send_event(struct evdev_dev *evdev, uint16_t type, uint16_t code, 738 int32_t value) 739 { 740 enum evdev_sparse_result sparse; 741 742 EVDEV_LOCK_ASSERT(evdev); 743 744 sparse = evdev_sparse_event(evdev, type, code, value); 745 switch (sparse) { 746 case EV_REPORT_MT_SLOT: 747 /* report postponed ABS_MT_SLOT */ 748 evdev_propagate_event(evdev, EV_ABS, ABS_MT_SLOT, 749 CURRENT_MT_SLOT(evdev)); 750 /* FALLTHROUGH */ 751 case EV_REPORT_EVENT: 752 evdev_propagate_event(evdev, type, code, value); 753 /* FALLTHROUGH */ 754 case EV_SKIP_EVENT: 755 break; 756 } 757 } 758 759 int 760 evdev_push_event(struct evdev_dev *evdev, uint16_t type, uint16_t code, 761 int32_t value) 762 { 763 764 if (evdev_check_event(evdev, type, code, value) != 0) 765 return (EINVAL); 766 767 EVDEV_ENTER(evdev); 768 769 evdev_modify_event(evdev, type, code, &value); 770 if (type == EV_SYN && code == SYN_REPORT && 771 bit_test(evdev->ev_flags, EVDEV_FLAG_MT_AUTOREL)) 772 evdev_send_mt_autorel(evdev); 773 if (type == EV_SYN && code == SYN_REPORT && evdev->ev_report_opened && 774 bit_test(evdev->ev_flags, EVDEV_FLAG_MT_STCOMPAT)) 775 evdev_send_mt_compat(evdev); 776 evdev_send_event(evdev, type, code, value); 777 778 EVDEV_EXIT(evdev); 779 780 return (0); 781 } 782 783 int 784 evdev_inject_event(struct evdev_dev *evdev, uint16_t type, uint16_t code, 785 int32_t value) 786 { 787 int ret = 0; 788 789 switch (type) { 790 case EV_REP: 791 /* evdev repeats should not be processed by hardware driver */ 792 if (bit_test(evdev->ev_flags, EVDEV_FLAG_SOFTREPEAT)) 793 goto push; 794 /* FALLTHROUGH */ 795 case EV_LED: 796 case EV_MSC: 797 case EV_SND: 798 case EV_FF: 799 if (evdev->ev_methods != NULL && 800 evdev->ev_methods->ev_event != NULL) 801 evdev->ev_methods->ev_event(evdev, evdev->ev_softc, 802 type, code, value); 803 /* 804 * Leds and driver repeats should be reported in ev_event 805 * method body to interoperate with kbdmux states and rates 806 * propagation so both ways (ioctl and evdev) of changing it 807 * will produce only one evdev event report to client. 808 */ 809 if (type == EV_LED || type == EV_REP) 810 break; 811 /* FALLTHROUGH */ 812 case EV_SYN: 813 case EV_KEY: 814 case EV_REL: 815 case EV_ABS: 816 case EV_SW: 817 push: 818 if (evdev->ev_lock_type != EV_LOCK_INTERNAL) 819 EVDEV_LOCK(evdev); 820 ret = evdev_push_event(evdev, type, code, value); 821 if (evdev->ev_lock_type != EV_LOCK_INTERNAL) 822 EVDEV_UNLOCK(evdev); 823 break; 824 825 default: 826 ret = EINVAL; 827 } 828 829 return (ret); 830 } 831 832 int 833 evdev_register_client(struct evdev_dev *evdev, struct evdev_client *client) 834 { 835 int ret = 0; 836 837 debugf(evdev, "adding new client for device %s", evdev->ev_shortname); 838 839 EVDEV_LOCK_ASSERT(evdev); 840 841 if (LIST_EMPTY(&evdev->ev_clients) && evdev->ev_methods != NULL && 842 evdev->ev_methods->ev_open != NULL) { 843 debugf(evdev, "calling ev_open() on device %s", 844 evdev->ev_shortname); 845 ret = evdev->ev_methods->ev_open(evdev, evdev->ev_softc); 846 } 847 if (ret == 0) 848 LIST_INSERT_HEAD(&evdev->ev_clients, client, ec_link); 849 return (ret); 850 } 851 852 void 853 evdev_dispose_client(struct evdev_dev *evdev, struct evdev_client *client) 854 { 855 debugf(evdev, "removing client for device %s", evdev->ev_shortname); 856 857 EVDEV_LOCK_ASSERT(evdev); 858 859 LIST_REMOVE(client, ec_link); 860 if (LIST_EMPTY(&evdev->ev_clients)) { 861 if (evdev->ev_methods != NULL && 862 evdev->ev_methods->ev_close != NULL) 863 evdev->ev_methods->ev_close(evdev, evdev->ev_softc); 864 if (evdev_event_supported(evdev, EV_REP) && 865 bit_test(evdev->ev_flags, EVDEV_FLAG_SOFTREPEAT)) 866 evdev_stop_repeat(evdev); 867 } 868 evdev_release_client(evdev, client); 869 } 870 871 int 872 evdev_grab_client(struct evdev_dev *evdev, struct evdev_client *client) 873 { 874 875 EVDEV_LOCK_ASSERT(evdev); 876 877 if (evdev->ev_grabber != NULL) 878 return (EBUSY); 879 880 evdev->ev_grabber = client; 881 882 return (0); 883 } 884 885 int 886 evdev_release_client(struct evdev_dev *evdev, struct evdev_client *client) 887 { 888 889 EVDEV_LOCK_ASSERT(evdev); 890 891 if (evdev->ev_grabber != client) 892 return (EINVAL); 893 894 evdev->ev_grabber = NULL; 895 896 return (0); 897 } 898 899 static void 900 evdev_repeat_callout(void *arg) 901 { 902 struct evdev_dev *evdev = (struct evdev_dev *)arg; 903 904 evdev_send_event(evdev, EV_KEY, evdev->ev_rep_key, KEY_EVENT_REPEAT); 905 evdev_send_event(evdev, EV_SYN, SYN_REPORT, 1); 906 907 if (evdev->ev_rep[REP_PERIOD]) 908 callout_reset(&evdev->ev_rep_callout, 909 evdev->ev_rep[REP_PERIOD] * hz / 1000, 910 evdev_repeat_callout, evdev); 911 else 912 evdev->ev_rep_key = KEY_RESERVED; 913 } 914 915 static void 916 evdev_start_repeat(struct evdev_dev *evdev, uint16_t key) 917 { 918 919 EVDEV_LOCK_ASSERT(evdev); 920 921 if (evdev->ev_rep[REP_DELAY]) { 922 evdev->ev_rep_key = key; 923 callout_reset(&evdev->ev_rep_callout, 924 evdev->ev_rep[REP_DELAY] * hz / 1000, 925 evdev_repeat_callout, evdev); 926 } 927 } 928 929 static void 930 evdev_stop_repeat(struct evdev_dev *evdev) 931 { 932 933 EVDEV_LOCK_ASSERT(evdev); 934 935 if (evdev->ev_rep_key != KEY_RESERVED) { 936 callout_stop(&evdev->ev_rep_callout); 937 evdev->ev_rep_key = KEY_RESERVED; 938 } 939 } 940 941 MODULE_VERSION(evdev, 1); 942