usb.c revision 1.60
1 /* $NetBSD: usb.c,v 1.60 2001/12/31 12:15:22 augustss Exp $ */ 2 3 /* 4 * Copyright (c) 1998 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 1.60 2001/12/31 12:15:22 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 struct proc *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 struct proc *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 event 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 wakeup(&usb_all_tasks); 270 splx(s); 271 } 272 273 void 274 usb_rem_task(usbd_device_handle dev, struct usb_task *task) 275 { 276 int s; 277 278 s = splusb(); 279 if (task->onqueue) { 280 TAILQ_REMOVE(&usb_all_tasks, task, next); 281 task->onqueue = 0; 282 } 283 splx(s); 284 } 285 286 void 287 usb_event_thread(void *arg) 288 { 289 struct usb_softc *sc = arg; 290 291 DPRINTF(("usb_event_thread: start\n")); 292 293 #if 0 294 /* 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, 250); 300 #endif 301 302 /* Make sure first discover does something. */ 303 sc->sc_bus->needs_explore = 1; 304 usb_discover(sc); 305 config_pending_decr(); 306 307 while (!sc->sc_dying) { 308 #ifdef USB_DEBUG 309 if (usb_noexplore < 2) 310 #endif 311 usb_discover(sc); 312 #ifdef USB_DEBUG 313 (void)tsleep(&sc->sc_bus->needs_explore, PWAIT, "usbevt", 314 usb_noexplore ? 0 : hz * 60); 315 #else 316 (void)tsleep(&sc->sc_bus->needs_explore, PWAIT, "usbevt", 317 hz * 60); 318 #endif 319 DPRINTFN(2,("usb_event_thread: woke up\n")); 320 } 321 sc->sc_event_thread = NULL; 322 323 /* In case parent is waiting for us to exit. */ 324 wakeup(sc); 325 326 DPRINTF(("usb_event_thread: exit\n")); 327 kthread_exit(0); 328 } 329 330 void 331 usb_task_thread(void *arg) 332 { 333 struct usb_task *task; 334 int s; 335 336 DPRINTF(("usb_task_thread: start\n")); 337 338 s = splusb(); 339 for (;;) { 340 task = TAILQ_FIRST(&usb_all_tasks); 341 if (task == NULL) { 342 tsleep(&usb_all_tasks, PWAIT, "usbtsk", 0); 343 task = TAILQ_FIRST(&usb_all_tasks); 344 } 345 DPRINTFN(2,("usb_task_thread: woke up task=%p\n", task)); 346 if (task != NULL) { 347 TAILQ_REMOVE(&usb_all_tasks, task, next); 348 task->onqueue = 0; 349 splx(s); 350 task->fun(task->arg); 351 s = splusb(); 352 } 353 } 354 } 355 356 int 357 usbctlprint(void *aux, const char *pnp) 358 { 359 /* only "usb"es can attach to host controllers */ 360 if (pnp) 361 printf("usb at %s", pnp); 362 363 return (UNCONF); 364 } 365 #endif /* defined(__NetBSD__) || defined(__OpenBSD__) */ 366 367 int 368 usbopen(dev_t dev, int flag, int mode, usb_proc_ptr p) 369 { 370 int unit = minor(dev); 371 struct usb_softc *sc; 372 373 if (unit == USB_DEV_MINOR) { 374 if (usb_dev_open) 375 return (EBUSY); 376 usb_dev_open = 1; 377 usb_async_proc = 0; 378 return (0); 379 } 380 381 USB_GET_SC_OPEN(usb, unit, sc); 382 383 if (sc->sc_dying) 384 return (EIO); 385 386 return (0); 387 } 388 389 int 390 usbread(dev_t dev, struct uio *uio, int flag) 391 { 392 struct usb_event ue; 393 int s, error, n; 394 395 if (minor(dev) != USB_DEV_MINOR) 396 return (ENXIO); 397 398 if (uio->uio_resid != sizeof(struct usb_event)) 399 return (EINVAL); 400 401 error = 0; 402 s = splusb(); 403 for (;;) { 404 n = usb_get_next_event(&ue); 405 if (n != 0) 406 break; 407 if (flag & IO_NDELAY) { 408 error = EWOULDBLOCK; 409 break; 410 } 411 error = tsleep(&usb_events, PZERO | PCATCH, "usbrea", 0); 412 if (error) 413 break; 414 } 415 splx(s); 416 if (!error) 417 error = uiomove((void *)&ue, uio->uio_resid, uio); 418 419 return (error); 420 } 421 422 int 423 usbclose(dev_t dev, int flag, int mode, usb_proc_ptr p) 424 { 425 int unit = minor(dev); 426 427 if (unit == USB_DEV_MINOR) { 428 usb_async_proc = 0; 429 usb_dev_open = 0; 430 } 431 432 return (0); 433 } 434 435 int 436 usbioctl(dev_t devt, u_long cmd, caddr_t data, int flag, usb_proc_ptr p) 437 { 438 struct usb_softc *sc; 439 int unit = minor(devt); 440 441 if (unit == USB_DEV_MINOR) { 442 switch (cmd) { 443 case FIONBIO: 444 /* All handled in the upper FS layer. */ 445 return (0); 446 447 case FIOASYNC: 448 if (*(int *)data) 449 usb_async_proc = p; 450 else 451 usb_async_proc = 0; 452 return (0); 453 454 default: 455 return (EINVAL); 456 } 457 } 458 459 USB_GET_SC(usb, unit, sc); 460 461 if (sc->sc_dying) 462 return (EIO); 463 464 switch (cmd) { 465 #ifdef USB_DEBUG 466 case USB_SETDEBUG: 467 usbdebug = ((*(int *)data) & 0x000000ff); 468 #ifdef UHCI_DEBUG 469 uhcidebug = ((*(int *)data) & 0x0000ff00) >> 8; 470 #endif 471 #ifdef OHCI_DEBUG 472 ohcidebug = ((*(int *)data) & 0x00ff0000) >> 16; 473 #endif 474 break; 475 #endif /* USB_DEBUG */ 476 case USB_REQUEST: 477 { 478 struct usb_ctl_request *ur = (void *)data; 479 int len = UGETW(ur->request.wLength); 480 struct iovec iov; 481 struct uio uio; 482 void *ptr = 0; 483 int addr = ur->addr; 484 usbd_status err; 485 int error = 0; 486 487 DPRINTF(("usbioctl: USB_REQUEST addr=%d len=%d\n", addr, len)); 488 if (len < 0 || len > 32768) 489 return (EINVAL); 490 if (addr < 0 || addr >= USB_MAX_DEVICES || 491 sc->sc_bus->devices[addr] == 0) 492 return (EINVAL); 493 if (len != 0) { 494 iov.iov_base = (caddr_t)ur->data; 495 iov.iov_len = len; 496 uio.uio_iov = &iov; 497 uio.uio_iovcnt = 1; 498 uio.uio_resid = len; 499 uio.uio_offset = 0; 500 uio.uio_segflg = UIO_USERSPACE; 501 uio.uio_rw = 502 ur->request.bmRequestType & UT_READ ? 503 UIO_READ : UIO_WRITE; 504 uio.uio_procp = p; 505 ptr = malloc(len, M_TEMP, M_WAITOK); 506 if (uio.uio_rw == UIO_WRITE) { 507 error = uiomove(ptr, len, &uio); 508 if (error) 509 goto ret; 510 } 511 } 512 err = usbd_do_request_flags(sc->sc_bus->devices[addr], 513 &ur->request, ptr, ur->flags, &ur->actlen); 514 if (err) { 515 error = EIO; 516 goto ret; 517 } 518 if (len != 0) { 519 if (uio.uio_rw == UIO_READ) { 520 error = uiomove(ptr, len, &uio); 521 if (error) 522 goto ret; 523 } 524 } 525 ret: 526 if (ptr) 527 free(ptr, M_TEMP); 528 return (error); 529 } 530 531 case USB_DEVICEINFO: 532 { 533 struct usb_device_info *di = (void *)data; 534 int addr = di->addr; 535 usbd_device_handle dev; 536 537 if (addr < 1 || addr >= USB_MAX_DEVICES) 538 return (EINVAL); 539 dev = sc->sc_bus->devices[addr]; 540 if (dev == NULL) 541 return (ENXIO); 542 usbd_fill_deviceinfo(dev, di, 1); 543 break; 544 } 545 546 case USB_DEVICESTATS: 547 *(struct usb_device_stats *)data = sc->sc_bus->stats; 548 break; 549 550 default: 551 return (EINVAL); 552 } 553 return (0); 554 } 555 556 int 557 usbpoll(dev_t dev, int events, usb_proc_ptr p) 558 { 559 int revents, mask, s; 560 561 if (minor(dev) == USB_DEV_MINOR) { 562 revents = 0; 563 mask = POLLIN | POLLRDNORM; 564 565 s = splusb(); 566 if (events & mask && usb_nevents > 0) 567 revents |= events & mask; 568 if (revents == 0 && events & mask) 569 selrecord(p, &usb_selevent); 570 splx(s); 571 572 return (revents); 573 } else { 574 return (ENXIO); 575 } 576 } 577 578 /* Explore device tree from the root. */ 579 Static void 580 usb_discover(void *v) 581 { 582 struct usb_softc *sc = v; 583 584 DPRINTFN(2,("usb_discover\n")); 585 #ifdef USB_DEBUG 586 if (usb_noexplore > 1) 587 return; 588 #endif 589 /* 590 * We need mutual exclusion while traversing the device tree, 591 * but this is guaranteed since this function is only called 592 * from the event thread for the controller. 593 */ 594 while (sc->sc_bus->needs_explore && !sc->sc_dying) { 595 sc->sc_bus->needs_explore = 0; 596 sc->sc_bus->root_hub->hub->explore(sc->sc_bus->root_hub); 597 } 598 } 599 600 void 601 usb_needs_explore(usbd_device_handle dev) 602 { 603 DPRINTFN(2,("usb_needs_explore\n")); 604 dev->bus->needs_explore = 1; 605 wakeup(&dev->bus->needs_explore); 606 } 607 608 /* Called at splusb() */ 609 int 610 usb_get_next_event(struct usb_event *ue) 611 { 612 struct usb_event_q *ueq; 613 614 if (usb_nevents <= 0) 615 return (0); 616 ueq = SIMPLEQ_FIRST(&usb_events); 617 *ue = ueq->ue; 618 SIMPLEQ_REMOVE_HEAD(&usb_events, ueq, next); 619 free(ueq, M_USBDEV); 620 usb_nevents--; 621 return (1); 622 } 623 624 void 625 usbd_add_dev_event(int type, usbd_device_handle udev) 626 { 627 struct usb_event ue; 628 629 usbd_fill_deviceinfo(udev, &ue.u.ue_device, USB_EVENT_IS_ATTACH(type)); 630 usb_add_event(type, &ue); 631 } 632 633 void 634 usbd_add_drv_event(int type, usbd_device_handle udev, device_ptr_t dev) 635 { 636 struct usb_event ue; 637 638 ue.u.ue_driver.ue_cookie = udev->cookie; 639 strncpy(ue.u.ue_driver.ue_devname, USBDEVPTRNAME(dev), 640 sizeof ue.u.ue_driver.ue_devname); 641 usb_add_event(type, &ue); 642 } 643 644 Static void 645 usb_add_event(int type, struct usb_event *uep) 646 { 647 struct usb_event_q *ueq; 648 struct usb_event ue; 649 struct timeval thetime; 650 int s; 651 652 microtime(&thetime); 653 /* Don't want to wait here inside splusb() */ 654 ueq = malloc(sizeof *ueq, M_USBDEV, M_WAITOK); 655 ueq->ue = *uep; 656 ueq->ue.ue_type = type; 657 TIMEVAL_TO_TIMESPEC(&thetime, &ueq->ue.ue_time); 658 659 s = splusb(); 660 if (++usb_nevents >= USB_MAX_EVENTS) { 661 /* Too many queued events, drop an old one. */ 662 DPRINTFN(-1,("usb: event dropped\n")); 663 (void)usb_get_next_event(&ue); 664 } 665 SIMPLEQ_INSERT_TAIL(&usb_events, ueq, next); 666 wakeup(&usb_events); 667 selwakeup(&usb_selevent); 668 if (usb_async_proc != NULL) 669 psignal(usb_async_proc, SIGIO); 670 splx(s); 671 } 672 673 void 674 usb_schedsoftintr(usbd_bus_handle bus) 675 { 676 DPRINTFN(10,("usb_schedsoftintr: polling=%d\n", bus->use_polling)); 677 #ifdef USB_USE_SOFTINTR 678 if (bus->use_polling) { 679 bus->methods->soft_intr(bus); 680 } else { 681 #ifdef __HAVE_GENERIC_SOFT_INTERRUPTS 682 softintr_schedule(bus->soft); 683 #else 684 if (!callout_pending(&bus->softi)) 685 callout_reset(&bus->softi, 0, bus->methods->soft_intr, 686 bus); 687 #endif /* __HAVE_GENERIC_SOFT_INTERRUPTS */ 688 } 689 #else 690 bus->methods->soft_intr(bus); 691 #endif /* USB_USE_SOFTINTR */ 692 } 693 694 int 695 usb_activate(device_ptr_t self, enum devact act) 696 { 697 struct usb_softc *sc = (struct usb_softc *)self; 698 usbd_device_handle dev = sc->sc_port.device; 699 int i, rv = 0; 700 701 switch (act) { 702 case DVACT_ACTIVATE: 703 return (EOPNOTSUPP); 704 break; 705 706 case DVACT_DEACTIVATE: 707 sc->sc_dying = 1; 708 if (dev && dev->cdesc && dev->subdevs) { 709 for (i = 0; dev->subdevs[i]; i++) 710 rv |= config_deactivate(dev->subdevs[i]); 711 } 712 break; 713 } 714 return (rv); 715 } 716 717 int 718 usb_detach(device_ptr_t self, int flags) 719 { 720 struct usb_softc *sc = (struct usb_softc *)self; 721 struct usb_event ue; 722 723 DPRINTF(("usb_detach: start\n")); 724 725 sc->sc_dying = 1; 726 727 /* Make all devices disconnect. */ 728 if (sc->sc_port.device) 729 usb_disconnect_port(&sc->sc_port, self); 730 731 /* Kill off event thread. */ 732 if (sc->sc_event_thread) { 733 wakeup(&sc->sc_bus->needs_explore); 734 if (tsleep(sc, PWAIT, "usbdet", hz * 60)) 735 printf("%s: event thread didn't die\n", 736 USBDEVNAME(sc->sc_dev)); 737 DPRINTF(("usb_detach: event thread dead\n")); 738 } 739 740 usbd_finish(); 741 742 #ifdef USB_USE_SOFTINTR 743 #ifdef __HAVE_GENERIC_SOFT_INTERRUPTS 744 if (sc->sc_bus->soft != NULL) { 745 softintr_disestablish(sc->sc_bus->soft); 746 sc->sc_bus->soft = NULL; 747 } 748 #else 749 callout_stop(&sc->sc_bus->softi); 750 #endif 751 #endif 752 753 ue.u.ue_ctrlr.ue_bus = USBDEVUNIT(sc->sc_dev); 754 usb_add_event(USB_EVENT_CTRLR_DETACH, &ue); 755 756 return (0); 757 } 758
Indexes created Fri Sep 26 20:09:58 GMT 2025