usb.c revision 1.62
1 /* $NetBSD: usb.c,v 1.62 2002/01/02 20:55:58 augustss Exp $ */ 2 3 /* 4 * Copyright (c) 1998, 2002 The NetBSD Foundation, Inc. 5 * All rights reserved. 6 * 7 * This code is derived from software contributed to The NetBSD Foundation 8 * by Lennart Augustsson (lennart (at) augustsson.net) at 9 * Carlstedt Research & Technology. 10 * 11 * Redistribution and use in source and binary forms, with or without 12 * modification, are permitted provided that the following conditions 13 * are met: 14 * 1. Redistributions of source code must retain the above copyright 15 * notice, this list of conditions and the following disclaimer. 16 * 2. Redistributions in binary form must reproduce the above copyright 17 * notice, this list of conditions and the following disclaimer in the 18 * documentation and/or other materials provided with the distribution. 19 * 3. All advertising materials mentioning features or use of this software 20 * must display the following acknowledgement: 21 * This product includes software developed by the NetBSD 22 * Foundation, Inc. and its contributors. 23 * 4. Neither the name of The NetBSD Foundation nor the names of its 24 * contributors may be used to endorse or promote products derived 25 * from this software without specific prior written permission. 26 * 27 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 28 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 29 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 30 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 31 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 32 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 33 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 34 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 35 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 36 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 37 * POSSIBILITY OF SUCH DAMAGE. 38 */ 39 40 /* 41 * USB specifications and other documentation can be found at 42 * http://www.usb.org/developers/data/ and 43 * http://www.usb.org/developers/index.html . 44 */ 45 46 #include <sys/cdefs.h> 47 __KERNEL_RCSID(0, "$NetBSD: usb.c,v 1.62 2002/01/02 20:55:58 augustss Exp $"); 48 49 #include <sys/param.h> 50 #include <sys/systm.h> 51 #include <sys/kernel.h> 52 #include <sys/malloc.h> 53 #include <sys/device.h> 54 #include <sys/kthread.h> 55 #include <sys/proc.h> 56 #include <sys/conf.h> 57 #include <sys/poll.h> 58 #include <sys/select.h> 59 #include <sys/vnode.h> 60 #include <sys/signalvar.h> 61 62 #include <dev/usb/usb.h> 63 #include <dev/usb/usbdi.h> 64 #include <dev/usb/usbdi_util.h> 65 66 #define USB_DEV_MINOR 255 67 68 #include <machine/bus.h> 69 70 #include <dev/usb/usbdivar.h> 71 #include <dev/usb/usb_quirks.h> 72 73 #ifdef USB_DEBUG 74 #define DPRINTF(x) if (usbdebug) logprintf x 75 #define DPRINTFN(n,x) if (usbdebug>(n)) logprintf x 76 int usbdebug = 0; 77 #ifdef UHCI_DEBUG 78 int uhcidebug; 79 #endif 80 #ifdef OHCI_DEBUG 81 int ohcidebug; 82 #endif 83 /* 84 * 0 - do usual exploration 85 * 1 - do not use timeout exploration 86 * >1 - do no exploration 87 */ 88 int usb_noexplore = 0; 89 #else 90 #define DPRINTF(x) 91 #define DPRINTFN(n,x) 92 #endif 93 94 struct usb_softc { 95 USBBASEDEVICE sc_dev; /* base device */ 96 usbd_bus_handle sc_bus; /* USB controller */ 97 struct usbd_port sc_port; /* dummy port for root hub */ 98 99 usb_proc_ptr *sc_event_thread; 100 101 char sc_dying; 102 }; 103 104 TAILQ_HEAD(, usb_task) usb_all_tasks; 105 106 cdev_decl(usb); 107 108 Static void usb_discover(void *); 109 Static void usb_create_event_thread(void *); 110 Static void usb_event_thread(void *); 111 Static void usb_task_thread(void *); 112 Static usb_proc_ptr *usb_task_thread_proc = NULL; 113 114 #define USB_MAX_EVENTS 100 115 struct usb_event_q { 116 struct usb_event ue; 117 SIMPLEQ_ENTRY(usb_event_q) next; 118 }; 119 Static SIMPLEQ_HEAD(, usb_event_q) usb_events = 120 SIMPLEQ_HEAD_INITIALIZER(usb_events); 121 Static int usb_nevents = 0; 122 Static struct selinfo usb_selevent; 123 Static usb_proc_ptr usb_async_proc; /* process that wants USB SIGIO */ 124 Static int usb_dev_open = 0; 125 Static void usb_add_event(int, struct usb_event *); 126 127 Static int usb_get_next_event(struct usb_event *); 128 129 Static const char *usbrev_str[] = USBREV_STR; 130 131 USB_DECLARE_DRIVER(usb); 132 133 USB_MATCH(usb) 134 { 135 DPRINTF(("usbd_match\n")); 136 return (UMATCH_GENERIC); 137 } 138 139 USB_ATTACH(usb) 140 { 141 struct usb_softc *sc = (struct usb_softc *)self; 142 usbd_device_handle dev; 143 usbd_status err; 144 int usbrev; 145 int speed; 146 struct usb_event ue; 147 148 DPRINTF(("usbd_attach\n")); 149 150 usbd_init(); 151 sc->sc_bus = aux; 152 sc->sc_bus->usbctl = sc; 153 sc->sc_port.power = USB_MAX_POWER; 154 155 usbrev = sc->sc_bus->usbrev; 156 printf(": USB revision %s", usbrev_str[usbrev]); 157 switch (usbrev) { 158 case USBREV_1_0: 159 case USBREV_1_1: 160 speed = USB_SPEED_FULL; 161 break; 162 case USBREV_2_0: 163 speed = USB_SPEED_HIGH; 164 break; 165 default: 166 printf(", not supported\n"); 167 sc->sc_dying = 1; 168 USB_ATTACH_ERROR_RETURN; 169 } 170 printf("\n"); 171 172 /* Make sure not to use tsleep() if we are cold booting. */ 173 if (cold) 174 sc->sc_bus->use_polling++; 175 176 ue.u.ue_ctrlr.ue_bus = USBDEVUNIT(sc->sc_dev); 177 usb_add_event(USB_EVENT_CTRLR_ATTACH, &ue); 178 179 #ifdef USB_USE_SOFTINTR 180 #ifdef __HAVE_GENERIC_SOFT_INTERRUPTS 181 /* XXX we should have our own level */ 182 sc->sc_bus->soft = softintr_establish(IPL_SOFTNET, 183 sc->sc_bus->methods->soft_intr, sc->sc_bus); 184 if (sc->sc_bus->soft == NULL) { 185 printf("%s: can't register softintr\n", USBDEVNAME(sc->sc_dev)); 186 sc->sc_dying = 1; 187 USB_ATTACH_ERROR_RETURN; 188 } 189 #else 190 callout_init(&sc->sc_bus->softi); 191 #endif 192 #endif 193 194 err = usbd_new_device(USBDEV(sc->sc_dev), sc->sc_bus, 0, speed, 0, 195 &sc->sc_port); 196 if (!err) { 197 dev = sc->sc_port.device; 198 if (dev->hub == NULL) { 199 sc->sc_dying = 1; 200 printf("%s: root device is not a hub\n", 201 USBDEVNAME(sc->sc_dev)); 202 USB_ATTACH_ERROR_RETURN; 203 } 204 sc->sc_bus->root_hub = dev; 205 #if 1 206 /* 207 * Turning this code off will delay attachment of USB devices 208 * until the USB event thread is running, which means that 209 * the keyboard will not work until after cold boot. 210 */ 211 if (cold && (sc->sc_dev.dv_cfdata->cf_flags & 1)) 212 dev->hub->explore(sc->sc_bus->root_hub); 213 #endif 214 } else { 215 printf("%s: root hub problem, error=%d\n", 216 USBDEVNAME(sc->sc_dev), err); 217 sc->sc_dying = 1; 218 } 219 if (cold) 220 sc->sc_bus->use_polling--; 221 222 config_pending_incr(); 223 usb_kthread_create(usb_create_event_thread, sc); 224 225 USB_ATTACH_SUCCESS_RETURN; 226 } 227 228 #if defined(__NetBSD__) || defined(__OpenBSD__) 229 void 230 usb_create_event_thread(void *arg) 231 { 232 struct usb_softc *sc = arg; 233 static int created = 0; 234 235 if (usb_kthread_create1(usb_event_thread, sc, &sc->sc_event_thread, 236 "%s", sc->sc_dev.dv_xname)) { 237 printf("%s: unable to create event thread for\n", 238 sc->sc_dev.dv_xname); 239 panic("usb_create_event_thread"); 240 } 241 if (!created) { 242 created = 1; 243 TAILQ_INIT(&usb_all_tasks); 244 if (usb_kthread_create1(usb_task_thread, NULL, 245 &usb_task_thread_proc, "usbtask")) { 246 printf("unable to create task thread\n"); 247 panic("usb_create_event_thread task"); 248 } 249 } 250 } 251 252 /* 253 * Add a task to be performed by the task thread. This function can be 254 * called from any context and the task will be executed in a process 255 * context ASAP. 256 */ 257 void 258 usb_add_task(usbd_device_handle dev, struct usb_task *task) 259 { 260 int s; 261 262 s = splusb(); 263 if (!task->onqueue) { 264 DPRINTFN(2,("usb_add_task: task=%p\n", task)); 265 TAILQ_INSERT_TAIL(&usb_all_tasks, task, next); 266 task->onqueue = 1; 267 } else { 268 DPRINTFN(3,("usb_add_task: task=%p on q\n", task)); 269 } 270 wakeup(&usb_all_tasks); 271 splx(s); 272 } 273 274 void 275 usb_rem_task(usbd_device_handle dev, struct usb_task *task) 276 { 277 int s; 278 279 s = splusb(); 280 if (task->onqueue) { 281 TAILQ_REMOVE(&usb_all_tasks, task, next); 282 task->onqueue = 0; 283 } 284 splx(s); 285 } 286 287 void 288 usb_event_thread(void *arg) 289 { 290 struct usb_softc *sc = arg; 291 292 DPRINTF(("usb_event_thread: start\n")); 293 294 /* 295 * In case this controller is a companion controller to an 296 * EHCI controller we need to wait until the EHCI controller 297 * has grabbed the port. 298 */ 299 usb_delay_ms(sc->sc_bus, 500); 300 301 /* Make sure first discover does something. */ 302 sc->sc_bus->needs_explore = 1; 303 usb_discover(sc); 304 config_pending_decr(); 305 306 while (!sc->sc_dying) { 307 #ifdef USB_DEBUG 308 if (usb_noexplore < 2) 309 #endif 310 usb_discover(sc); 311 #ifdef USB_DEBUG 312 (void)tsleep(&sc->sc_bus->needs_explore, PWAIT, "usbevt", 313 usb_noexplore ? 0 : hz * 60); 314 #else 315 (void)tsleep(&sc->sc_bus->needs_explore, PWAIT, "usbevt", 316 hz * 60); 317 #endif 318 DPRINTFN(2,("usb_event_thread: woke up\n")); 319 } 320 sc->sc_event_thread = NULL; 321 322 /* In case parent is waiting for us to exit. */ 323 wakeup(sc); 324 325 DPRINTF(("usb_event_thread: exit\n")); 326 kthread_exit(0); 327 } 328 329 void 330 usb_task_thread(void *arg) 331 { 332 struct usb_task *task; 333 int s; 334 335 DPRINTF(("usb_task_thread: start\n")); 336 337 s = splusb(); 338 for (;;) { 339 task = TAILQ_FIRST(&usb_all_tasks); 340 if (task == NULL) { 341 tsleep(&usb_all_tasks, PWAIT, "usbtsk", 0); 342 task = TAILQ_FIRST(&usb_all_tasks); 343 } 344 DPRINTFN(2,("usb_task_thread: woke up task=%p\n", task)); 345 if (task != NULL) { 346 TAILQ_REMOVE(&usb_all_tasks, task, next); 347 task->onqueue = 0; 348 splx(s); 349 task->fun(task->arg); 350 s = splusb(); 351 } 352 } 353 } 354 355 int 356 usbctlprint(void *aux, const char *pnp) 357 { 358 /* only "usb"es can attach to host controllers */ 359 if (pnp) 360 printf("usb at %s", pnp); 361 362 return (UNCONF); 363 } 364 #endif /* defined(__NetBSD__) || defined(__OpenBSD__) */ 365 366 int 367 usbopen(dev_t dev, int flag, int mode, usb_proc_ptr p) 368 { 369 int unit = minor(dev); 370 struct usb_softc *sc; 371 372 if (unit == USB_DEV_MINOR) { 373 if (usb_dev_open) 374 return (EBUSY); 375 usb_dev_open = 1; 376 usb_async_proc = 0; 377 return (0); 378 } 379 380 USB_GET_SC_OPEN(usb, unit, sc); 381 382 if (sc->sc_dying) 383 return (EIO); 384 385 return (0); 386 } 387 388 int 389 usbread(dev_t dev, struct uio *uio, int flag) 390 { 391 struct usb_event ue; 392 int s, error, n; 393 394 if (minor(dev) != USB_DEV_MINOR) 395 return (ENXIO); 396 397 if (uio->uio_resid != sizeof(struct usb_event)) 398 return (EINVAL); 399 400 error = 0; 401 s = splusb(); 402 for (;;) { 403 n = usb_get_next_event(&ue); 404 if (n != 0) 405 break; 406 if (flag & IO_NDELAY) { 407 error = EWOULDBLOCK; 408 break; 409 } 410 error = tsleep(&usb_events, PZERO | PCATCH, "usbrea", 0); 411 if (error) 412 break; 413 } 414 splx(s); 415 if (!error) 416 error = uiomove((void *)&ue, uio->uio_resid, uio); 417 418 return (error); 419 } 420 421 int 422 usbclose(dev_t dev, int flag, int mode, usb_proc_ptr p) 423 { 424 int unit = minor(dev); 425 426 if (unit == USB_DEV_MINOR) { 427 usb_async_proc = 0; 428 usb_dev_open = 0; 429 } 430 431 return (0); 432 } 433 434 int 435 usbioctl(dev_t devt, u_long cmd, caddr_t data, int flag, usb_proc_ptr p) 436 { 437 struct usb_softc *sc; 438 int unit = minor(devt); 439 440 if (unit == USB_DEV_MINOR) { 441 switch (cmd) { 442 case FIONBIO: 443 /* All handled in the upper FS layer. */ 444 return (0); 445 446 case FIOASYNC: 447 if (*(int *)data) 448 usb_async_proc = p; 449 else 450 usb_async_proc = 0; 451 return (0); 452 453 default: 454 return (EINVAL); 455 } 456 } 457 458 USB_GET_SC(usb, unit, sc); 459 460 if (sc->sc_dying) 461 return (EIO); 462 463 switch (cmd) { 464 #ifdef USB_DEBUG 465 case USB_SETDEBUG: 466 usbdebug = ((*(int *)data) & 0x000000ff); 467 #ifdef UHCI_DEBUG 468 uhcidebug = ((*(int *)data) & 0x0000ff00) >> 8; 469 #endif 470 #ifdef OHCI_DEBUG 471 ohcidebug = ((*(int *)data) & 0x00ff0000) >> 16; 472 #endif 473 break; 474 #endif /* USB_DEBUG */ 475 case USB_REQUEST: 476 { 477 struct usb_ctl_request *ur = (void *)data; 478 int len = UGETW(ur->request.wLength); 479 struct iovec iov; 480 struct uio uio; 481 void *ptr = 0; 482 int addr = ur->addr; 483 usbd_status err; 484 int error = 0; 485 486 DPRINTF(("usbioctl: USB_REQUEST addr=%d len=%d\n", addr, len)); 487 if (len < 0 || len > 32768) 488 return (EINVAL); 489 if (addr < 0 || addr >= USB_MAX_DEVICES || 490 sc->sc_bus->devices[addr] == 0) 491 return (EINVAL); 492 if (len != 0) { 493 iov.iov_base = (caddr_t)ur->data; 494 iov.iov_len = len; 495 uio.uio_iov = &iov; 496 uio.uio_iovcnt = 1; 497 uio.uio_resid = len; 498 uio.uio_offset = 0; 499 uio.uio_segflg = UIO_USERSPACE; 500 uio.uio_rw = 501 ur->request.bmRequestType & UT_READ ? 502 UIO_READ : UIO_WRITE; 503 uio.uio_procp = p; 504 ptr = malloc(len, M_TEMP, M_WAITOK); 505 if (uio.uio_rw == UIO_WRITE) { 506 error = uiomove(ptr, len, &uio); 507 if (error) 508 goto ret; 509 } 510 } 511 err = usbd_do_request_flags(sc->sc_bus->devices[addr], 512 &ur->request, ptr, ur->flags, &ur->actlen); 513 if (err) { 514 error = EIO; 515 goto ret; 516 } 517 if (len != 0) { 518 if (uio.uio_rw == UIO_READ) { 519 error = uiomove(ptr, len, &uio); 520 if (error) 521 goto ret; 522 } 523 } 524 ret: 525 if (ptr) 526 free(ptr, M_TEMP); 527 return (error); 528 } 529 530 case USB_DEVICEINFO: 531 { 532 struct usb_device_info *di = (void *)data; 533 int addr = di->addr; 534 usbd_device_handle dev; 535 536 if (addr < 1 || addr >= USB_MAX_DEVICES) 537 return (EINVAL); 538 dev = sc->sc_bus->devices[addr]; 539 if (dev == NULL) 540 return (ENXIO); 541 usbd_fill_deviceinfo(dev, di, 1); 542 break; 543 } 544 545 case USB_DEVICESTATS: 546 *(struct usb_device_stats *)data = sc->sc_bus->stats; 547 break; 548 549 default: 550 return (EINVAL); 551 } 552 return (0); 553 } 554 555 int 556 usbpoll(dev_t dev, int events, usb_proc_ptr p) 557 { 558 int revents, mask, s; 559 560 if (minor(dev) == USB_DEV_MINOR) { 561 revents = 0; 562 mask = POLLIN | POLLRDNORM; 563 564 s = splusb(); 565 if (events & mask && usb_nevents > 0) 566 revents |= events & mask; 567 if (revents == 0 && events & mask) 568 selrecord(p, &usb_selevent); 569 splx(s); 570 571 return (revents); 572 } else { 573 return (ENXIO); 574 } 575 } 576 577 /* Explore device tree from the root. */ 578 Static void 579 usb_discover(void *v) 580 { 581 struct usb_softc *sc = v; 582 583 DPRINTFN(2,("usb_discover\n")); 584 #ifdef USB_DEBUG 585 if (usb_noexplore > 1) 586 return; 587 #endif 588 /* 589 * We need mutual exclusion while traversing the device tree, 590 * but this is guaranteed since this function is only called 591 * from the event thread for the controller. 592 */ 593 while (sc->sc_bus->needs_explore && !sc->sc_dying) { 594 sc->sc_bus->needs_explore = 0; 595 sc->sc_bus->root_hub->hub->explore(sc->sc_bus->root_hub); 596 } 597 } 598 599 void 600 usb_needs_explore(usbd_device_handle dev) 601 { 602 DPRINTFN(2,("usb_needs_explore\n")); 603 dev->bus->needs_explore = 1; 604 wakeup(&dev->bus->needs_explore); 605 } 606 607 /* Called at splusb() */ 608 int 609 usb_get_next_event(struct usb_event *ue) 610 { 611 struct usb_event_q *ueq; 612 613 if (usb_nevents <= 0) 614 return (0); 615 ueq = SIMPLEQ_FIRST(&usb_events); 616 *ue = ueq->ue; 617 SIMPLEQ_REMOVE_HEAD(&usb_events, ueq, next); 618 free(ueq, M_USBDEV); 619 usb_nevents--; 620 return (1); 621 } 622 623 void 624 usbd_add_dev_event(int type, usbd_device_handle udev) 625 { 626 struct usb_event ue; 627 628 usbd_fill_deviceinfo(udev, &ue.u.ue_device, USB_EVENT_IS_ATTACH(type)); 629 usb_add_event(type, &ue); 630 } 631 632 void 633 usbd_add_drv_event(int type, usbd_device_handle udev, device_ptr_t dev) 634 { 635 struct usb_event ue; 636 637 ue.u.ue_driver.ue_cookie = udev->cookie; 638 strncpy(ue.u.ue_driver.ue_devname, USBDEVPTRNAME(dev), 639 sizeof ue.u.ue_driver.ue_devname); 640 usb_add_event(type, &ue); 641 } 642 643 Static void 644 usb_add_event(int type, struct usb_event *uep) 645 { 646 struct usb_event_q *ueq; 647 struct usb_event ue; 648 struct timeval thetime; 649 int s; 650 651 microtime(&thetime); 652 /* Don't want to wait here inside splusb() */ 653 ueq = malloc(sizeof *ueq, M_USBDEV, M_WAITOK); 654 ueq->ue = *uep; 655 ueq->ue.ue_type = type; 656 TIMEVAL_TO_TIMESPEC(&thetime, &ueq->ue.ue_time); 657 658 s = splusb(); 659 if (++usb_nevents >= USB_MAX_EVENTS) { 660 /* Too many queued events, drop an old one. */ 661 DPRINTFN(-1,("usb: event dropped\n")); 662 (void)usb_get_next_event(&ue); 663 } 664 SIMPLEQ_INSERT_TAIL(&usb_events, ueq, next); 665 wakeup(&usb_events); 666 selwakeup(&usb_selevent); 667 if (usb_async_proc != NULL) 668 psignal(usb_async_proc, SIGIO); 669 splx(s); 670 } 671 672 void 673 usb_schedsoftintr(usbd_bus_handle bus) 674 { 675 DPRINTFN(10,("usb_schedsoftintr: polling=%d\n", bus->use_polling)); 676 #ifdef USB_USE_SOFTINTR 677 if (bus->use_polling) { 678 bus->methods->soft_intr(bus); 679 } else { 680 #ifdef __HAVE_GENERIC_SOFT_INTERRUPTS 681 softintr_schedule(bus->soft); 682 #else 683 if (!callout_pending(&bus->softi)) 684 callout_reset(&bus->softi, 0, bus->methods->soft_intr, 685 bus); 686 #endif /* __HAVE_GENERIC_SOFT_INTERRUPTS */ 687 } 688 #else 689 bus->methods->soft_intr(bus); 690 #endif /* USB_USE_SOFTINTR */ 691 } 692 693 int 694 usb_activate(device_ptr_t self, enum devact act) 695 { 696 struct usb_softc *sc = (struct usb_softc *)self; 697 usbd_device_handle dev = sc->sc_port.device; 698 int i, rv = 0; 699 700 switch (act) { 701 case DVACT_ACTIVATE: 702 return (EOPNOTSUPP); 703 break; 704 705 case DVACT_DEACTIVATE: 706 sc->sc_dying = 1; 707 if (dev != NULL && dev->cdesc != NULL && dev->subdevs != NULL) { 708 for (i = 0; dev->subdevs[i]; i++) 709 rv |= config_deactivate(dev->subdevs[i]); 710 } 711 break; 712 } 713 return (rv); 714 } 715 716 int 717 usb_detach(device_ptr_t self, int flags) 718 { 719 struct usb_softc *sc = (struct usb_softc *)self; 720 struct usb_event ue; 721 722 DPRINTF(("usb_detach: start\n")); 723 724 sc->sc_dying = 1; 725 726 /* Make all devices disconnect. */ 727 if (sc->sc_port.device != NULL) 728 usb_disconnect_port(&sc->sc_port, self); 729 730 /* Kill off event thread. */ 731 if (sc->sc_event_thread != NULL) { 732 wakeup(&sc->sc_bus->needs_explore); 733 if (tsleep(sc, PWAIT, "usbdet", hz * 60)) 734 printf("%s: event thread didn't die\n", 735 USBDEVNAME(sc->sc_dev)); 736 DPRINTF(("usb_detach: event thread dead\n")); 737 } 738 739 usbd_finish(); 740 741 #ifdef USB_USE_SOFTINTR 742 #ifdef __HAVE_GENERIC_SOFT_INTERRUPTS 743 if (sc->sc_bus->soft != NULL) { 744 softintr_disestablish(sc->sc_bus->soft); 745 sc->sc_bus->soft = NULL; 746 } 747 #else 748 callout_stop(&sc->sc_bus->softi); 749 #endif 750 #endif 751 752 ue.u.ue_ctrlr.ue_bus = USBDEVUNIT(sc->sc_dev); 753 usb_add_event(USB_EVENT_CTRLR_DETACH, &ue); 754 755 return (0); 756 } 757
Indexes created Tue Sep 23 23:09:58 GMT 2025