usb.c revision 1.61
1 /* $NetBSD: usb.c,v 1.61 2001/12/31 15:55:51 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 1.61 2001/12/31 15:55:51 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 /* 294 * In case this controller is a companion controller to an 295 * EHCI controller we need to wait until the EHCI controller 296 * has grabbed the port. 297 */ 298 usb_delay_ms(sc->sc_bus, 500); 299 300 /* Make sure first discover does something. */ 301 sc->sc_bus->needs_explore = 1; 302 usb_discover(sc); 303 config_pending_decr(); 304 305 while (!sc->sc_dying) { 306 #ifdef USB_DEBUG 307 if (usb_noexplore < 2) 308 #endif 309 usb_discover(sc); 310 #ifdef USB_DEBUG 311 (void)tsleep(&sc->sc_bus->needs_explore, PWAIT, "usbevt", 312 usb_noexplore ? 0 : hz * 60); 313 #else 314 (void)tsleep(&sc->sc_bus->needs_explore, PWAIT, "usbevt", 315 hz * 60); 316 #endif 317 DPRINTFN(2,("usb_event_thread: woke up\n")); 318 } 319 sc->sc_event_thread = NULL; 320 321 /* In case parent is waiting for us to exit. */ 322 wakeup(sc); 323 324 DPRINTF(("usb_event_thread: exit\n")); 325 kthread_exit(0); 326 } 327 328 void 329 usb_task_thread(void *arg) 330 { 331 struct usb_task *task; 332 int s; 333 334 DPRINTF(("usb_task_thread: start\n")); 335 336 s = splusb(); 337 for (;;) { 338 task = TAILQ_FIRST(&usb_all_tasks); 339 if (task == NULL) { 340 tsleep(&usb_all_tasks, PWAIT, "usbtsk", 0); 341 task = TAILQ_FIRST(&usb_all_tasks); 342 } 343 DPRINTFN(2,("usb_task_thread: woke up task=%p\n", task)); 344 if (task != NULL) { 345 TAILQ_REMOVE(&usb_all_tasks, task, next); 346 task->onqueue = 0; 347 splx(s); 348 task->fun(task->arg); 349 s = splusb(); 350 } 351 } 352 } 353 354 int 355 usbctlprint(void *aux, const char *pnp) 356 { 357 /* only "usb"es can attach to host controllers */ 358 if (pnp) 359 printf("usb at %s", pnp); 360 361 return (UNCONF); 362 } 363 #endif /* defined(__NetBSD__) || defined(__OpenBSD__) */ 364 365 int 366 usbopen(dev_t dev, int flag, int mode, usb_proc_ptr p) 367 { 368 int unit = minor(dev); 369 struct usb_softc *sc; 370 371 if (unit == USB_DEV_MINOR) { 372 if (usb_dev_open) 373 return (EBUSY); 374 usb_dev_open = 1; 375 usb_async_proc = 0; 376 return (0); 377 } 378 379 USB_GET_SC_OPEN(usb, unit, sc); 380 381 if (sc->sc_dying) 382 return (EIO); 383 384 return (0); 385 } 386 387 int 388 usbread(dev_t dev, struct uio *uio, int flag) 389 { 390 struct usb_event ue; 391 int s, error, n; 392 393 if (minor(dev) != USB_DEV_MINOR) 394 return (ENXIO); 395 396 if (uio->uio_resid != sizeof(struct usb_event)) 397 return (EINVAL); 398 399 error = 0; 400 s = splusb(); 401 for (;;) { 402 n = usb_get_next_event(&ue); 403 if (n != 0) 404 break; 405 if (flag & IO_NDELAY) { 406 error = EWOULDBLOCK; 407 break; 408 } 409 error = tsleep(&usb_events, PZERO | PCATCH, "usbrea", 0); 410 if (error) 411 break; 412 } 413 splx(s); 414 if (!error) 415 error = uiomove((void *)&ue, uio->uio_resid, uio); 416 417 return (error); 418 } 419 420 int 421 usbclose(dev_t dev, int flag, int mode, usb_proc_ptr p) 422 { 423 int unit = minor(dev); 424 425 if (unit == USB_DEV_MINOR) { 426 usb_async_proc = 0; 427 usb_dev_open = 0; 428 } 429 430 return (0); 431 } 432 433 int 434 usbioctl(dev_t devt, u_long cmd, caddr_t data, int flag, usb_proc_ptr p) 435 { 436 struct usb_softc *sc; 437 int unit = minor(devt); 438 439 if (unit == USB_DEV_MINOR) { 440 switch (cmd) { 441 case FIONBIO: 442 /* All handled in the upper FS layer. */ 443 return (0); 444 445 case FIOASYNC: 446 if (*(int *)data) 447 usb_async_proc = p; 448 else 449 usb_async_proc = 0; 450 return (0); 451 452 default: 453 return (EINVAL); 454 } 455 } 456 457 USB_GET_SC(usb, unit, sc); 458 459 if (sc->sc_dying) 460 return (EIO); 461 462 switch (cmd) { 463 #ifdef USB_DEBUG 464 case USB_SETDEBUG: 465 usbdebug = ((*(int *)data) & 0x000000ff); 466 #ifdef UHCI_DEBUG 467 uhcidebug = ((*(int *)data) & 0x0000ff00) >> 8; 468 #endif 469 #ifdef OHCI_DEBUG 470 ohcidebug = ((*(int *)data) & 0x00ff0000) >> 16; 471 #endif 472 break; 473 #endif /* USB_DEBUG */ 474 case USB_REQUEST: 475 { 476 struct usb_ctl_request *ur = (void *)data; 477 int len = UGETW(ur->request.wLength); 478 struct iovec iov; 479 struct uio uio; 480 void *ptr = 0; 481 int addr = ur->addr; 482 usbd_status err; 483 int error = 0; 484 485 DPRINTF(("usbioctl: USB_REQUEST addr=%d len=%d\n", addr, len)); 486 if (len < 0 || len > 32768) 487 return (EINVAL); 488 if (addr < 0 || addr >= USB_MAX_DEVICES || 489 sc->sc_bus->devices[addr] == 0) 490 return (EINVAL); 491 if (len != 0) { 492 iov.iov_base = (caddr_t)ur->data; 493 iov.iov_len = len; 494 uio.uio_iov = &iov; 495 uio.uio_iovcnt = 1; 496 uio.uio_resid = len; 497 uio.uio_offset = 0; 498 uio.uio_segflg = UIO_USERSPACE; 499 uio.uio_rw = 500 ur->request.bmRequestType & UT_READ ? 501 UIO_READ : UIO_WRITE; 502 uio.uio_procp = p; 503 ptr = malloc(len, M_TEMP, M_WAITOK); 504 if (uio.uio_rw == UIO_WRITE) { 505 error = uiomove(ptr, len, &uio); 506 if (error) 507 goto ret; 508 } 509 } 510 err = usbd_do_request_flags(sc->sc_bus->devices[addr], 511 &ur->request, ptr, ur->flags, &ur->actlen); 512 if (err) { 513 error = EIO; 514 goto ret; 515 } 516 if (len != 0) { 517 if (uio.uio_rw == UIO_READ) { 518 error = uiomove(ptr, len, &uio); 519 if (error) 520 goto ret; 521 } 522 } 523 ret: 524 if (ptr) 525 free(ptr, M_TEMP); 526 return (error); 527 } 528 529 case USB_DEVICEINFO: 530 { 531 struct usb_device_info *di = (void *)data; 532 int addr = di->addr; 533 usbd_device_handle dev; 534 535 if (addr < 1 || addr >= USB_MAX_DEVICES) 536 return (EINVAL); 537 dev = sc->sc_bus->devices[addr]; 538 if (dev == NULL) 539 return (ENXIO); 540 usbd_fill_deviceinfo(dev, di, 1); 541 break; 542 } 543 544 case USB_DEVICESTATS: 545 *(struct usb_device_stats *)data = sc->sc_bus->stats; 546 break; 547 548 default: 549 return (EINVAL); 550 } 551 return (0); 552 } 553 554 int 555 usbpoll(dev_t dev, int events, usb_proc_ptr p) 556 { 557 int revents, mask, s; 558 559 if (minor(dev) == USB_DEV_MINOR) { 560 revents = 0; 561 mask = POLLIN | POLLRDNORM; 562 563 s = splusb(); 564 if (events & mask && usb_nevents > 0) 565 revents |= events & mask; 566 if (revents == 0 && events & mask) 567 selrecord(p, &usb_selevent); 568 splx(s); 569 570 return (revents); 571 } else { 572 return (ENXIO); 573 } 574 } 575 576 /* Explore device tree from the root. */ 577 Static void 578 usb_discover(void *v) 579 { 580 struct usb_softc *sc = v; 581 582 DPRINTFN(2,("usb_discover\n")); 583 #ifdef USB_DEBUG 584 if (usb_noexplore > 1) 585 return; 586 #endif 587 /* 588 * We need mutual exclusion while traversing the device tree, 589 * but this is guaranteed since this function is only called 590 * from the event thread for the controller. 591 */ 592 while (sc->sc_bus->needs_explore && !sc->sc_dying) { 593 sc->sc_bus->needs_explore = 0; 594 sc->sc_bus->root_hub->hub->explore(sc->sc_bus->root_hub); 595 } 596 } 597 598 void 599 usb_needs_explore(usbd_device_handle dev) 600 { 601 DPRINTFN(2,("usb_needs_explore\n")); 602 dev->bus->needs_explore = 1; 603 wakeup(&dev->bus->needs_explore); 604 } 605 606 /* Called at splusb() */ 607 int 608 usb_get_next_event(struct usb_event *ue) 609 { 610 struct usb_event_q *ueq; 611 612 if (usb_nevents <= 0) 613 return (0); 614 ueq = SIMPLEQ_FIRST(&usb_events); 615 *ue = ueq->ue; 616 SIMPLEQ_REMOVE_HEAD(&usb_events, ueq, next); 617 free(ueq, M_USBDEV); 618 usb_nevents--; 619 return (1); 620 } 621 622 void 623 usbd_add_dev_event(int type, usbd_device_handle udev) 624 { 625 struct usb_event ue; 626 627 usbd_fill_deviceinfo(udev, &ue.u.ue_device, USB_EVENT_IS_ATTACH(type)); 628 usb_add_event(type, &ue); 629 } 630 631 void 632 usbd_add_drv_event(int type, usbd_device_handle udev, device_ptr_t dev) 633 { 634 struct usb_event ue; 635 636 ue.u.ue_driver.ue_cookie = udev->cookie; 637 strncpy(ue.u.ue_driver.ue_devname, USBDEVPTRNAME(dev), 638 sizeof ue.u.ue_driver.ue_devname); 639 usb_add_event(type, &ue); 640 } 641 642 Static void 643 usb_add_event(int type, struct usb_event *uep) 644 { 645 struct usb_event_q *ueq; 646 struct usb_event ue; 647 struct timeval thetime; 648 int s; 649 650 microtime(&thetime); 651 /* Don't want to wait here inside splusb() */ 652 ueq = malloc(sizeof *ueq, M_USBDEV, M_WAITOK); 653 ueq->ue = *uep; 654 ueq->ue.ue_type = type; 655 TIMEVAL_TO_TIMESPEC(&thetime, &ueq->ue.ue_time); 656 657 s = splusb(); 658 if (++usb_nevents >= USB_MAX_EVENTS) { 659 /* Too many queued events, drop an old one. */ 660 DPRINTFN(-1,("usb: event dropped\n")); 661 (void)usb_get_next_event(&ue); 662 } 663 SIMPLEQ_INSERT_TAIL(&usb_events, ueq, next); 664 wakeup(&usb_events); 665 selwakeup(&usb_selevent); 666 if (usb_async_proc != NULL) 667 psignal(usb_async_proc, SIGIO); 668 splx(s); 669 } 670 671 void 672 usb_schedsoftintr(usbd_bus_handle bus) 673 { 674 DPRINTFN(10,("usb_schedsoftintr: polling=%d\n", bus->use_polling)); 675 #ifdef USB_USE_SOFTINTR 676 if (bus->use_polling) { 677 bus->methods->soft_intr(bus); 678 } else { 679 #ifdef __HAVE_GENERIC_SOFT_INTERRUPTS 680 softintr_schedule(bus->soft); 681 #else 682 if (!callout_pending(&bus->softi)) 683 callout_reset(&bus->softi, 0, bus->methods->soft_intr, 684 bus); 685 #endif /* __HAVE_GENERIC_SOFT_INTERRUPTS */ 686 } 687 #else 688 bus->methods->soft_intr(bus); 689 #endif /* USB_USE_SOFTINTR */ 690 } 691 692 int 693 usb_activate(device_ptr_t self, enum devact act) 694 { 695 struct usb_softc *sc = (struct usb_softc *)self; 696 usbd_device_handle dev = sc->sc_port.device; 697 int i, rv = 0; 698 699 switch (act) { 700 case DVACT_ACTIVATE: 701 return (EOPNOTSUPP); 702 break; 703 704 case DVACT_DEACTIVATE: 705 sc->sc_dying = 1; 706 if (dev && dev->cdesc && dev->subdevs) { 707 for (i = 0; dev->subdevs[i]; i++) 708 rv |= config_deactivate(dev->subdevs[i]); 709 } 710 break; 711 } 712 return (rv); 713 } 714 715 int 716 usb_detach(device_ptr_t self, int flags) 717 { 718 struct usb_softc *sc = (struct usb_softc *)self; 719 struct usb_event ue; 720 721 DPRINTF(("usb_detach: start\n")); 722 723 sc->sc_dying = 1; 724 725 /* Make all devices disconnect. */ 726 if (sc->sc_port.device) 727 usb_disconnect_port(&sc->sc_port, self); 728 729 /* Kill off event thread. */ 730 if (sc->sc_event_thread) { 731 wakeup(&sc->sc_bus->needs_explore); 732 if (tsleep(sc, PWAIT, "usbdet", hz * 60)) 733 printf("%s: event thread didn't die\n", 734 USBDEVNAME(sc->sc_dev)); 735 DPRINTF(("usb_detach: event thread dead\n")); 736 } 737 738 usbd_finish(); 739 740 #ifdef USB_USE_SOFTINTR 741 #ifdef __HAVE_GENERIC_SOFT_INTERRUPTS 742 if (sc->sc_bus->soft != NULL) { 743 softintr_disestablish(sc->sc_bus->soft); 744 sc->sc_bus->soft = NULL; 745 } 746 #else 747 callout_stop(&sc->sc_bus->softi); 748 #endif 749 #endif 750 751 ue.u.ue_ctrlr.ue_bus = USBDEVUNIT(sc->sc_dev); 752 usb_add_event(USB_EVENT_CTRLR_DETACH, &ue); 753 754 return (0); 755 } 756
Indexes created Tue Sep 23 07:09:52 GMT 2025