bthidev.c revision 1.7.4.1
1 /* $NetBSD: bthidev.c,v 1.7.4.1 2007/05/07 10:55:25 yamt Exp $ */ 2 3 /*- 4 * Copyright (c) 2006 Itronix Inc. 5 * All rights reserved. 6 * 7 * Written by Iain Hibbert for Itronix Inc. 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 * 3. The name of Itronix Inc. may not be used to endorse 18 * or promote products derived from this software without specific 19 * prior written permission. 20 * 21 * THIS SOFTWARE IS PROVIDED BY ITRONIX INC. ``AS IS'' AND 22 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 23 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 24 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL ITRONIX INC. BE LIABLE FOR ANY 25 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES 26 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 27 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND 28 * ON ANY THEORY OF LIABILITY, WHETHER IN 29 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 30 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 31 * POSSIBILITY OF SUCH DAMAGE. 32 */ 33 34 #include <sys/cdefs.h> 35 __KERNEL_RCSID(0, "$NetBSD: bthidev.c,v 1.7.4.1 2007/05/07 10:55:25 yamt Exp $"); 36 37 #include <sys/param.h> 38 #include <sys/conf.h> 39 #include <sys/device.h> 40 #include <sys/fcntl.h> 41 #include <sys/kernel.h> 42 #include <sys/queue.h> 43 #include <sys/malloc.h> 44 #include <sys/mbuf.h> 45 #include <sys/proc.h> 46 #include <sys/systm.h> 47 48 #include <prop/proplib.h> 49 50 #include <netbt/bluetooth.h> 51 #include <netbt/l2cap.h> 52 53 #include <dev/usb/hid.h> 54 #include <dev/bluetooth/btdev.h> 55 #include <dev/bluetooth/bthid.h> 56 #include <dev/bluetooth/bthidev.h> 57 58 #include "locators.h" 59 60 /***************************************************************************** 61 * 62 * Bluetooth HID device 63 */ 64 65 #define MAX_DESCRIPTOR_LEN 1024 /* sanity check */ 66 67 /* bthidev softc */ 68 struct bthidev_softc { 69 struct btdev sc_btdev; 70 uint16_t sc_state; 71 uint16_t sc_flags; 72 73 bdaddr_t sc_laddr; /* local address */ 74 bdaddr_t sc_raddr; /* remote address */ 75 int sc_mode; /* link mode */ 76 77 uint16_t sc_ctlpsm; /* control PSM */ 78 struct l2cap_channel *sc_ctl; /* control channel */ 79 struct l2cap_channel *sc_ctl_l; /* control listen */ 80 81 uint16_t sc_intpsm; /* interrupt PSM */ 82 struct l2cap_channel *sc_int; /* interrupt channel */ 83 struct l2cap_channel *sc_int_l; /* interrupt listen */ 84 85 LIST_HEAD(,bthidev) sc_list; /* child list */ 86 87 struct callout sc_reconnect; 88 int sc_attempts; /* connection attempts */ 89 }; 90 91 /* sc_flags */ 92 #define BTHID_RECONNECT (1 << 0) /* reconnect on link loss */ 93 #define BTHID_CONNECTING (1 << 1) /* we are connecting */ 94 95 /* device state */ 96 #define BTHID_CLOSED 0 97 #define BTHID_WAIT_CTL 1 98 #define BTHID_WAIT_INT 2 99 #define BTHID_OPEN 3 100 #define BTHID_DETACHING 4 101 102 #define BTHID_RETRY_INTERVAL 5 /* seconds between connection attempts */ 103 104 /* bthidev internals */ 105 static void bthidev_timeout(void *); 106 static int bthidev_listen(struct bthidev_softc *); 107 static int bthidev_connect(struct bthidev_softc *); 108 static int bthidev_output(struct bthidev *, uint8_t *, int); 109 static void bthidev_null(struct bthidev *, uint8_t *, int); 110 111 /* autoconf(9) glue */ 112 static int bthidev_match(struct device *, struct cfdata *, void *); 113 static void bthidev_attach(struct device *, struct device *, void *); 114 static int bthidev_detach(struct device *, int); 115 static int bthidev_print(void *, const char *); 116 117 CFATTACH_DECL(bthidev, sizeof(struct bthidev_softc), 118 bthidev_match, bthidev_attach, bthidev_detach, NULL); 119 120 /* bluetooth(9) protocol methods for L2CAP */ 121 static void bthidev_connecting(void *); 122 static void bthidev_ctl_connected(void *); 123 static void bthidev_int_connected(void *); 124 static void bthidev_ctl_disconnected(void *, int); 125 static void bthidev_int_disconnected(void *, int); 126 static void *bthidev_ctl_newconn(void *, struct sockaddr_bt *, struct sockaddr_bt *); 127 static void *bthidev_int_newconn(void *, struct sockaddr_bt *, struct sockaddr_bt *); 128 static void bthidev_complete(void *, int); 129 static void bthidev_linkmode(void *, int); 130 static void bthidev_input(void *, struct mbuf *); 131 132 static const struct btproto bthidev_ctl_proto = { 133 bthidev_connecting, 134 bthidev_ctl_connected, 135 bthidev_ctl_disconnected, 136 bthidev_ctl_newconn, 137 bthidev_complete, 138 bthidev_linkmode, 139 bthidev_input, 140 }; 141 142 static const struct btproto bthidev_int_proto = { 143 bthidev_connecting, 144 bthidev_int_connected, 145 bthidev_int_disconnected, 146 bthidev_int_newconn, 147 bthidev_complete, 148 bthidev_linkmode, 149 bthidev_input, 150 }; 151 152 /***************************************************************************** 153 * 154 * bthidev autoconf(9) routines 155 */ 156 157 static int 158 bthidev_match(struct device *self, struct cfdata *cfdata, 159 void *aux) 160 { 161 prop_dictionary_t dict = aux; 162 prop_object_t obj; 163 164 obj = prop_dictionary_get(dict, BTDEVservice); 165 if (prop_string_equals_cstring(obj, "HID")) 166 return 1; 167 168 return 0; 169 } 170 171 static void 172 bthidev_attach(struct device *parent, struct device *self, void *aux) 173 { 174 struct bthidev_softc *sc = (struct bthidev_softc *)self; 175 prop_dictionary_t dict = aux; 176 prop_object_t obj; 177 struct bthidev_attach_args bha; 178 struct bthidev *dev; 179 struct hid_data *d; 180 struct hid_item h; 181 const void *desc; 182 int locs[BTHIDBUSCF_NLOCS]; 183 int maxid, rep, s, dlen; 184 185 /* 186 * Init softc 187 */ 188 LIST_INIT(&sc->sc_list); 189 callout_init(&sc->sc_reconnect); 190 callout_setfunc(&sc->sc_reconnect, bthidev_timeout, sc); 191 sc->sc_state = BTHID_CLOSED; 192 sc->sc_flags = BTHID_CONNECTING; 193 sc->sc_ctlpsm = L2CAP_PSM_HID_CNTL; 194 sc->sc_intpsm = L2CAP_PSM_HID_INTR; 195 196 /* 197 * extract config from proplist 198 */ 199 obj = prop_dictionary_get(dict, BTDEVladdr); 200 bdaddr_copy(&sc->sc_laddr, prop_data_data_nocopy(obj)); 201 202 obj = prop_dictionary_get(dict, BTDEVraddr); 203 bdaddr_copy(&sc->sc_raddr, prop_data_data_nocopy(obj)); 204 205 obj = prop_dictionary_get(dict, BTDEVmode); 206 if (prop_object_type(obj) == PROP_TYPE_STRING) { 207 if (prop_string_equals_cstring(obj, BTDEVauth)) 208 sc->sc_mode = L2CAP_LM_AUTH; 209 else if (prop_string_equals_cstring(obj, BTDEVencrypt)) 210 sc->sc_mode = L2CAP_LM_ENCRYPT; 211 else if (prop_string_equals_cstring(obj, BTDEVsecure)) 212 sc->sc_mode = L2CAP_LM_SECURE; 213 else { 214 aprint_error(" unknown %s\n", BTDEVmode); 215 return; 216 } 217 218 aprint_verbose(" %s %s", BTDEVmode, 219 prop_string_cstring_nocopy(obj)); 220 } 221 222 obj = prop_dictionary_get(dict, BTHIDEVcontrolpsm); 223 if (prop_object_type(obj) == PROP_TYPE_NUMBER) { 224 sc->sc_ctlpsm = prop_number_integer_value(obj); 225 if (L2CAP_PSM_INVALID(sc->sc_ctlpsm)) { 226 aprint_error(" invalid %s\n", BTHIDEVcontrolpsm); 227 return; 228 } 229 } 230 231 obj = prop_dictionary_get(dict, BTHIDEVinterruptpsm); 232 if (prop_object_type(obj) == PROP_TYPE_NUMBER) { 233 sc->sc_intpsm = prop_number_integer_value(obj); 234 if (L2CAP_PSM_INVALID(sc->sc_intpsm)) { 235 aprint_error(" invalid %s\n", BTHIDEVinterruptpsm); 236 return; 237 } 238 } 239 240 obj = prop_dictionary_get(dict, BTHIDEVdescriptor); 241 if (prop_object_type(obj) == PROP_TYPE_DATA) { 242 dlen = prop_data_size(obj); 243 desc = prop_data_data_nocopy(obj); 244 } else { 245 aprint_error(" no %s\n", BTHIDEVdescriptor); 246 return; 247 } 248 249 obj = prop_dictionary_get(dict, BTHIDEVreconnect); 250 if (prop_object_type(obj) == PROP_TYPE_BOOL 251 && !prop_bool_true(obj)) 252 sc->sc_flags |= BTHID_RECONNECT; 253 254 /* 255 * Parse the descriptor and attach child devices, one per report. 256 */ 257 maxid = -1; 258 h.report_ID = 0; 259 d = hid_start_parse(desc, dlen, hid_none); 260 while (hid_get_item(d, &h)) { 261 if (h.report_ID > maxid) 262 maxid = h.report_ID; 263 } 264 hid_end_parse(d); 265 266 if (maxid < 0) { 267 aprint_error(" no reports found\n"); 268 return; 269 } 270 271 aprint_normal("\n"); 272 273 for (rep = 0 ; rep <= maxid ; rep++) { 274 if (hid_report_size(desc, dlen, hid_feature, rep) == 0 275 && hid_report_size(desc, dlen, hid_input, rep) == 0 276 && hid_report_size(desc, dlen, hid_output, rep) == 0) 277 continue; 278 279 bha.ba_desc = desc; 280 bha.ba_dlen = dlen; 281 bha.ba_input = bthidev_null; 282 bha.ba_feature = bthidev_null; 283 bha.ba_output = bthidev_output; 284 bha.ba_id = rep; 285 286 locs[BTHIDBUSCF_REPORTID] = rep; 287 288 dev = (struct bthidev *)config_found_sm_loc((struct device *)sc, "bthidbus", 289 locs, &bha, bthidev_print, config_stdsubmatch); 290 if (dev != NULL) { 291 dev->sc_parent = (struct device *)sc; 292 dev->sc_id = rep; 293 dev->sc_input = bha.ba_input; 294 dev->sc_feature = bha.ba_feature; 295 LIST_INSERT_HEAD(&sc->sc_list, dev, sc_next); 296 } 297 } 298 299 /* 300 * start bluetooth connections 301 */ 302 s = splsoftnet(); 303 if ((sc->sc_flags & BTHID_RECONNECT) == 0) 304 bthidev_listen(sc); 305 306 if (sc->sc_flags & BTHID_CONNECTING) 307 bthidev_connect(sc); 308 splx(s); 309 } 310 311 static int 312 bthidev_detach(struct device *self, int flags) 313 { 314 struct bthidev_softc *sc = (struct bthidev_softc *)self; 315 struct bthidev *dev; 316 int s; 317 318 s = splsoftnet(); 319 sc->sc_flags = 0; /* disable reconnecting */ 320 321 /* release interrupt listen */ 322 if (sc->sc_int_l != NULL) { 323 l2cap_detach(&sc->sc_int_l); 324 sc->sc_int_l = NULL; 325 } 326 327 /* release control listen */ 328 if (sc->sc_ctl_l != NULL) { 329 l2cap_detach(&sc->sc_ctl_l); 330 sc->sc_ctl_l = NULL; 331 } 332 333 /* close interrupt channel */ 334 if (sc->sc_int != NULL) { 335 l2cap_disconnect(sc->sc_int, 0); 336 l2cap_detach(&sc->sc_int); 337 sc->sc_int = NULL; 338 } 339 340 /* close control channel */ 341 if (sc->sc_ctl != NULL) { 342 l2cap_disconnect(sc->sc_ctl, 0); 343 l2cap_detach(&sc->sc_ctl); 344 sc->sc_ctl = NULL; 345 } 346 347 /* remove callout */ 348 sc->sc_state = BTHID_DETACHING; 349 callout_stop(&sc->sc_reconnect); 350 if (callout_invoking(&sc->sc_reconnect)) 351 tsleep(sc, PWAIT, "bthidetach", 0); 352 353 splx(s); 354 355 /* detach children */ 356 while ((dev = LIST_FIRST(&sc->sc_list)) != NULL) { 357 LIST_REMOVE(dev, sc_next); 358 config_detach((struct device *)dev, flags); 359 } 360 361 return 0; 362 } 363 364 /* 365 * bthidev config print 366 */ 367 static int 368 bthidev_print(void *aux, const char *pnp) 369 { 370 struct bthidev_attach_args *ba = aux; 371 372 if (pnp != NULL) 373 aprint_normal("%s:", pnp); 374 375 if (ba->ba_id > 0) 376 aprint_normal(" reportid %d", ba->ba_id); 377 378 return UNCONF; 379 } 380 381 /***************************************************************************** 382 * 383 * bluetooth(4) HID attach/detach routines 384 */ 385 386 /* 387 * callouts are scheduled after connections have been lost, in order 388 * to clean up and reconnect. 389 */ 390 static void 391 bthidev_timeout(void *arg) 392 { 393 struct bthidev_softc *sc = arg; 394 int s; 395 396 s = splsoftnet(); 397 callout_ack(&sc->sc_reconnect); 398 399 switch (sc->sc_state) { 400 case BTHID_CLOSED: 401 if (sc->sc_int != NULL) { 402 l2cap_disconnect(sc->sc_int, 0); 403 break; 404 } 405 406 if (sc->sc_ctl != NULL) { 407 l2cap_disconnect(sc->sc_ctl, 0); 408 break; 409 } 410 411 if (sc->sc_flags & BTHID_RECONNECT) { 412 sc->sc_flags |= BTHID_CONNECTING; 413 bthidev_connect(sc); 414 break; 415 } 416 417 break; 418 419 case BTHID_WAIT_CTL: 420 break; 421 422 case BTHID_WAIT_INT: 423 break; 424 425 case BTHID_OPEN: 426 break; 427 428 case BTHID_DETACHING: 429 wakeup(sc); 430 break; 431 432 default: 433 break; 434 } 435 splx(s); 436 } 437 438 /* 439 * listen for our device 440 */ 441 static int 442 bthidev_listen(struct bthidev_softc *sc) 443 { 444 struct sockaddr_bt sa; 445 int err; 446 447 memset(&sa, 0, sizeof(sa)); 448 sa.bt_len = sizeof(sa); 449 sa.bt_family = AF_BLUETOOTH; 450 bdaddr_copy(&sa.bt_bdaddr, &sc->sc_laddr); 451 452 /* 453 * Listen on control PSM 454 */ 455 err = l2cap_attach(&sc->sc_ctl_l, &bthidev_ctl_proto, sc); 456 if (err) 457 return err; 458 459 err = l2cap_setopt(sc->sc_ctl_l, SO_L2CAP_LM, &sc->sc_mode); 460 if (err) 461 return err; 462 463 sa.bt_psm = sc->sc_ctlpsm; 464 err = l2cap_bind(sc->sc_ctl_l, &sa); 465 if (err) 466 return err; 467 468 err = l2cap_listen(sc->sc_ctl_l); 469 if (err) 470 return err; 471 472 /* 473 * Listen on interrupt PSM 474 */ 475 err = l2cap_attach(&sc->sc_int_l, &bthidev_int_proto, sc); 476 if (err) 477 return err; 478 479 err = l2cap_setopt(sc->sc_int_l, SO_L2CAP_LM, &sc->sc_mode); 480 if (err) 481 return err; 482 483 sa.bt_psm = sc->sc_intpsm; 484 err = l2cap_bind(sc->sc_int_l, &sa); 485 if (err) 486 return err; 487 488 err = l2cap_listen(sc->sc_int_l); 489 if (err) 490 return err; 491 492 sc->sc_state = BTHID_WAIT_CTL; 493 return 0; 494 } 495 496 /* 497 * start connecting to our device 498 */ 499 static int 500 bthidev_connect(struct bthidev_softc *sc) 501 { 502 struct sockaddr_bt sa; 503 int err; 504 505 if (sc->sc_attempts++ > 0) 506 printf("%s: connect (#%d)\n", 507 device_xname((struct device *)sc), sc->sc_attempts); 508 509 memset(&sa, 0, sizeof(sa)); 510 sa.bt_len = sizeof(sa); 511 sa.bt_family = AF_BLUETOOTH; 512 513 err = l2cap_attach(&sc->sc_ctl, &bthidev_ctl_proto, sc); 514 if (err) { 515 printf("%s: l2cap_attach failed (%d)\n", 516 device_xname((struct device *)sc), err); 517 return err; 518 } 519 520 err = l2cap_setopt(sc->sc_ctl, SO_L2CAP_LM, &sc->sc_mode); 521 if (err) 522 return err; 523 524 bdaddr_copy(&sa.bt_bdaddr, &sc->sc_laddr); 525 err = l2cap_bind(sc->sc_ctl, &sa); 526 if (err) { 527 printf("%s: l2cap_bind failed (%d)\n", 528 device_xname((struct device *)sc), err); 529 return err; 530 } 531 532 sa.bt_psm = sc->sc_ctlpsm; 533 bdaddr_copy(&sa.bt_bdaddr, &sc->sc_raddr); 534 err = l2cap_connect(sc->sc_ctl, &sa); 535 if (err) { 536 printf("%s: l2cap_connect failed (%d)\n", 537 device_xname((struct device *)sc), err); 538 return err; 539 } 540 541 sc->sc_state = BTHID_WAIT_CTL; 542 return 0; 543 } 544 545 /***************************************************************************** 546 * 547 * bluetooth(9) callback methods for L2CAP 548 * 549 * All these are called from Bluetooth Protocol code, in a soft 550 * interrupt context at IPL_SOFTNET. 551 */ 552 553 static void 554 bthidev_connecting(void *arg) 555 { 556 557 /* dont care */ 558 } 559 560 static void 561 bthidev_ctl_connected(void *arg) 562 { 563 struct sockaddr_bt sa; 564 struct bthidev_softc *sc = arg; 565 int err; 566 567 if (sc->sc_state != BTHID_WAIT_CTL) 568 return; 569 570 KASSERT(sc->sc_ctl != NULL); 571 KASSERT(sc->sc_int == NULL); 572 573 if (sc->sc_flags & BTHID_CONNECTING) { 574 /* initiate connect on interrupt PSM */ 575 err = l2cap_attach(&sc->sc_int, &bthidev_int_proto, sc); 576 if (err) 577 goto fail; 578 579 err = l2cap_setopt(sc->sc_int, SO_L2CAP_LM, &sc->sc_mode); 580 if (err) 581 goto fail; 582 583 memset(&sa, 0, sizeof(sa)); 584 sa.bt_len = sizeof(sa); 585 sa.bt_family = AF_BLUETOOTH; 586 bdaddr_copy(&sa.bt_bdaddr, &sc->sc_laddr); 587 588 err = l2cap_bind(sc->sc_int, &sa); 589 if (err) 590 goto fail; 591 592 sa.bt_psm = sc->sc_intpsm; 593 bdaddr_copy(&sa.bt_bdaddr, &sc->sc_raddr); 594 err = l2cap_connect(sc->sc_int, &sa); 595 if (err) 596 goto fail; 597 } 598 599 sc->sc_state = BTHID_WAIT_INT; 600 return; 601 602 fail: 603 l2cap_detach(&sc->sc_ctl); 604 sc->sc_ctl = NULL; 605 606 printf("%s: connect failed (%d)\n", 607 device_xname((struct device *)sc), err); 608 } 609 610 static void 611 bthidev_int_connected(void *arg) 612 { 613 struct bthidev_softc *sc = arg; 614 615 if (sc->sc_state != BTHID_WAIT_INT) 616 return; 617 618 KASSERT(sc->sc_ctl != NULL); 619 KASSERT(sc->sc_int != NULL); 620 621 sc->sc_attempts = 0; 622 sc->sc_flags &= ~BTHID_CONNECTING; 623 sc->sc_state = BTHID_OPEN; 624 625 printf("%s: connected\n", device_xname((struct device *)sc)); 626 } 627 628 /* 629 * Disconnected 630 * 631 * Depending on our state, this could mean several things, but essentially 632 * we are lost. If both channels are closed, and we are marked to reconnect, 633 * schedule another try otherwise just give up. They will contact us. 634 */ 635 static void 636 bthidev_ctl_disconnected(void *arg, int err) 637 { 638 struct bthidev_softc *sc = arg; 639 640 if (sc->sc_ctl != NULL) { 641 l2cap_detach(&sc->sc_ctl); 642 sc->sc_ctl = NULL; 643 } 644 645 sc->sc_state = BTHID_CLOSED; 646 647 if (sc->sc_int == NULL) { 648 printf("%s: disconnected\n", 649 device_xname((struct device *)sc)); 650 sc->sc_flags &= ~BTHID_CONNECTING; 651 652 if (sc->sc_flags & BTHID_RECONNECT) 653 callout_schedule(&sc->sc_reconnect, 654 BTHID_RETRY_INTERVAL * hz); 655 else 656 sc->sc_state = BTHID_WAIT_CTL; 657 } else { 658 /* 659 * The interrupt channel should have been closed first, 660 * but its potentially unsafe to detach that from here. 661 * Give them a second to do the right thing or let the 662 * callout handle it. 663 */ 664 callout_schedule(&sc->sc_reconnect, hz); 665 } 666 } 667 668 static void 669 bthidev_int_disconnected(void *arg, int err) 670 { 671 struct bthidev_softc *sc = arg; 672 673 if (sc->sc_int != NULL) { 674 l2cap_detach(&sc->sc_int); 675 sc->sc_int = NULL; 676 } 677 678 sc->sc_state = BTHID_CLOSED; 679 680 if (sc->sc_ctl == NULL) { 681 printf("%s: disconnected\n", 682 device_xname((struct device *)sc)); 683 sc->sc_flags &= ~BTHID_CONNECTING; 684 685 if (sc->sc_flags & BTHID_RECONNECT) 686 callout_schedule(&sc->sc_reconnect, 687 BTHID_RETRY_INTERVAL * hz); 688 else 689 sc->sc_state = BTHID_WAIT_CTL; 690 } else { 691 /* 692 * The control channel should be closing also, allow 693 * them a chance to do that before we force it. 694 */ 695 callout_schedule(&sc->sc_reconnect, hz); 696 } 697 } 698 699 /* 700 * New Connections 701 * 702 * We give a new L2CAP handle back if this matches the BDADDR we are 703 * listening for and we are in the right state. bthidev_connected will 704 * be called when the connection is open, so nothing else to do here 705 */ 706 static void * 707 bthidev_ctl_newconn(void *arg, struct sockaddr_bt *laddr, 708 struct sockaddr_bt *raddr) 709 { 710 struct bthidev_softc *sc = arg; 711 712 if (bdaddr_same(&raddr->bt_bdaddr, &sc->sc_raddr) == 0 713 || (sc->sc_flags & BTHID_CONNECTING) 714 || sc->sc_state != BTHID_WAIT_CTL 715 || sc->sc_ctl != NULL 716 || sc->sc_int != NULL) 717 return NULL; 718 719 l2cap_attach(&sc->sc_ctl, &bthidev_ctl_proto, sc); 720 return sc->sc_ctl; 721 } 722 723 static void * 724 bthidev_int_newconn(void *arg, struct sockaddr_bt *laddr, 725 struct sockaddr_bt *raddr) 726 { 727 struct bthidev_softc *sc = arg; 728 729 if (bdaddr_same(&raddr->bt_bdaddr, &sc->sc_raddr) == 0 730 || (sc->sc_flags & BTHID_CONNECTING) 731 || sc->sc_state != BTHID_WAIT_INT 732 || sc->sc_ctl == NULL 733 || sc->sc_int != NULL) 734 return NULL; 735 736 l2cap_attach(&sc->sc_int, &bthidev_int_proto, sc); 737 return sc->sc_int; 738 } 739 740 static void 741 bthidev_complete(void *arg, int count) 742 { 743 744 /* dont care */ 745 } 746 747 static void 748 bthidev_linkmode(void *arg, int new) 749 { 750 struct bthidev_softc *sc = arg; 751 752 if ((sc->sc_mode & L2CAP_LM_AUTH) && !(new & L2CAP_LM_AUTH)) 753 printf("%s: auth failed\n", device_xname((struct device *)sc)); 754 else if ((sc->sc_mode & L2CAP_LM_ENCRYPT) && !(new & L2CAP_LM_ENCRYPT)) 755 printf("%s: encrypt off\n", device_xname((struct device *)sc)); 756 else if ((sc->sc_mode & L2CAP_LM_SECURE) && !(new & L2CAP_LM_SECURE)) 757 printf("%s: insecure\n", device_xname((struct device *)sc)); 758 else 759 return; 760 761 if (sc->sc_int != NULL) 762 l2cap_disconnect(sc->sc_int, 0); 763 764 if (sc->sc_ctl != NULL) 765 l2cap_disconnect(sc->sc_ctl, 0); 766 } 767 768 /* 769 * Receive reports from the protocol stack. 770 */ 771 static void 772 bthidev_input(void *arg, struct mbuf *m) 773 { 774 struct bthidev_softc *sc = arg; 775 struct bthidev *dev; 776 uint8_t *data; 777 int len; 778 779 if (sc->sc_state != BTHID_OPEN) 780 goto release; 781 782 if (m->m_pkthdr.len > m->m_len) 783 printf("%s: truncating HID report\n", 784 device_xname((struct device *)sc)); 785 786 len = m->m_len; 787 data = mtod(m, uint8_t *); 788 789 if (BTHID_TYPE(data[0]) == BTHID_DATA) { 790 /* 791 * data[0] == type / parameter 792 * data[1] == id 793 * data[2..len] == report 794 */ 795 if (len < 3) 796 goto release; 797 798 LIST_FOREACH(dev, &sc->sc_list, sc_next) { 799 if (data[1] == dev->sc_id) { 800 switch (BTHID_DATA_PARAM(data[0])) { 801 case BTHID_DATA_INPUT: 802 (*dev->sc_input)(dev, data + 2, len - 2); 803 break; 804 805 case BTHID_DATA_FEATURE: 806 (*dev->sc_feature)(dev, data + 2, len - 2); 807 break; 808 809 default: 810 break; 811 } 812 813 goto release; 814 } 815 } 816 printf("%s: report id %d, len = %d ignored\n", 817 device_xname((struct device *)sc), data[1], len - 2); 818 819 goto release; 820 } 821 822 if (BTHID_TYPE(data[0]) == BTHID_CONTROL) { 823 if (len < 1) 824 goto release; 825 826 if (BTHID_DATA_PARAM(data[0]) == BTHID_CONTROL_UNPLUG) { 827 printf("%s: unplugged\n", 828 device_xname((struct device *)sc)); 829 830 /* close interrupt channel */ 831 if (sc->sc_int != NULL) { 832 l2cap_disconnect(sc->sc_int, 0); 833 l2cap_detach(&sc->sc_int); 834 sc->sc_int = NULL; 835 } 836 837 /* close control channel */ 838 if (sc->sc_ctl != NULL) { 839 l2cap_disconnect(sc->sc_ctl, 0); 840 l2cap_detach(&sc->sc_ctl); 841 sc->sc_ctl = NULL; 842 } 843 } 844 845 goto release; 846 } 847 848 release: 849 m_freem(m); 850 } 851 852 /***************************************************************************** 853 * 854 * IO routines 855 */ 856 857 static void 858 bthidev_null(struct bthidev *dev, uint8_t *report, 859 int len) 860 { 861 862 /* 863 * empty routine just in case the device 864 * provided no method to handle this report 865 */ 866 } 867 868 static int 869 bthidev_output(struct bthidev *dev, uint8_t *report, int rlen) 870 { 871 struct bthidev_softc *sc = (struct bthidev_softc *)dev->sc_parent; 872 struct mbuf *m; 873 int s, err; 874 875 if (sc == NULL || sc->sc_state != BTHID_OPEN) 876 return ENOTCONN; 877 878 KASSERT(sc->sc_ctl != NULL); 879 KASSERT(sc->sc_int != NULL); 880 881 if (rlen == 0 || report == NULL) 882 return 0; 883 884 if (rlen > MHLEN - 2) { 885 printf("%s: output report too long (%d)!\n", 886 device_xname((struct device *)sc), rlen); 887 888 return EMSGSIZE; 889 } 890 891 m = m_gethdr(M_DONTWAIT, MT_DATA); 892 if (m == NULL) 893 return ENOMEM; 894 895 /* 896 * data[0] = type / parameter 897 * data[1] = id 898 * data[2..N] = report 899 */ 900 mtod(m, uint8_t *)[0] = (uint8_t)((BTHID_DATA << 4) | BTHID_DATA_OUTPUT); 901 mtod(m, uint8_t *)[1] = dev->sc_id; 902 memcpy(mtod(m, uint8_t *) + 2, report, rlen); 903 m->m_pkthdr.len = m->m_len = rlen + 2; 904 905 s = splsoftnet(); 906 err = l2cap_send(sc->sc_int, m); 907 splx(s); 908 909 return err; 910 } 911
Indexes created Wed Oct 01 18:09:54 GMT 2025