usb.c revision 1.99
1 /* $NetBSD: usb.c,v 1.99 2007/08/15 04:00:34 kiyohara 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/docs/ and 43 * http://www.usb.org/developers/devclass_docs/ 44 */ 45 46 #include <sys/cdefs.h> 47 __KERNEL_RCSID(0, "$NetBSD: usb.c,v 1.99 2007/08/15 04:00:34 kiyohara Exp $"); 48 49 #include "opt_compat_netbsd.h" 50 51 #include "ohci.h" 52 #include "uhci.h" 53 54 #include <sys/param.h> 55 #include <sys/systm.h> 56 #include <sys/kernel.h> 57 #include <sys/malloc.h> 58 #include <sys/device.h> 59 #include <sys/kthread.h> 60 #include <sys/proc.h> 61 #include <sys/conf.h> 62 #include <sys/fcntl.h> 63 #include <sys/poll.h> 64 #include <sys/select.h> 65 #include <sys/vnode.h> 66 #include <sys/signalvar.h> 67 68 #include <dev/usb/usb.h> 69 #include <dev/usb/usbdi.h> 70 #include <dev/usb/usbdi_util.h> 71 72 #define USB_DEV_MINOR 255 73 74 #include <machine/bus.h> 75 76 #include <dev/usb/usbdivar.h> 77 #include <dev/usb/usb_quirks.h> 78 79 #ifdef USB_DEBUG 80 #define DPRINTF(x) if (usbdebug) logprintf x 81 #define DPRINTFN(n,x) if (usbdebug>(n)) logprintf x 82 int usbdebug = 0; 83 #if defined(UHCI_DEBUG) && NUHCI > 0 84 extern int uhcidebug; 85 #endif 86 #if defined(OHCI_DEBUG) && NOHCI > 0 87 extern int ohcidebug; 88 #endif 89 /* 90 * 0 - do usual exploration 91 * 1 - do not use timeout exploration 92 * >1 - do no exploration 93 */ 94 int usb_noexplore = 0; 95 #else 96 #define DPRINTF(x) 97 #define DPRINTFN(n,x) 98 #endif 99 100 struct usb_softc { 101 USBBASEDEVICE sc_dev; /* base device */ 102 usbd_bus_handle sc_bus; /* USB controller */ 103 struct usbd_port sc_port; /* dummy port for root hub */ 104 105 struct lwp *sc_event_thread; 106 107 char sc_dying; 108 }; 109 110 struct usb_taskq { 111 TAILQ_HEAD(, usb_task) tasks; 112 struct lwp *task_thread_lwp; 113 const char *name; 114 int taskcreated; /* task thread exists. */ 115 }; 116 117 static struct usb_taskq usb_taskq[USB_NUM_TASKQS]; 118 119 dev_type_open(usbopen); 120 dev_type_close(usbclose); 121 dev_type_read(usbread); 122 dev_type_ioctl(usbioctl); 123 dev_type_poll(usbpoll); 124 dev_type_kqfilter(usbkqfilter); 125 126 const struct cdevsw usb_cdevsw = { 127 usbopen, usbclose, usbread, nowrite, usbioctl, 128 nostop, notty, usbpoll, nommap, usbkqfilter, D_OTHER, 129 }; 130 131 Static void usb_discover(void *); 132 Static void usb_create_event_thread(void *); 133 Static void usb_event_thread(void *); 134 Static void usb_task_thread(void *); 135 136 #define USB_MAX_EVENTS 100 137 struct usb_event_q { 138 struct usb_event ue; 139 SIMPLEQ_ENTRY(usb_event_q) next; 140 }; 141 Static SIMPLEQ_HEAD(, usb_event_q) usb_events = 142 SIMPLEQ_HEAD_INITIALIZER(usb_events); 143 Static int usb_nevents = 0; 144 Static struct selinfo usb_selevent; 145 Static usb_proc_ptr usb_async_proc; /* process that wants USB SIGIO */ 146 Static int usb_dev_open = 0; 147 Static struct usb_event *usb_alloc_event(void); 148 Static void usb_free_event(struct usb_event *); 149 Static void usb_add_event(int, struct usb_event *); 150 151 Static int usb_get_next_event(struct usb_event *); 152 153 #ifdef COMPAT_30 154 Static void usb_copy_old_devinfo(struct usb_device_info_old *, const struct usb_device_info *); 155 #endif 156 157 Static const char *usbrev_str[] = USBREV_STR; 158 159 USB_DECLARE_DRIVER(usb); 160 161 USB_MATCH(usb) 162 { 163 DPRINTF(("usbd_match\n")); 164 return (UMATCH_GENERIC); 165 } 166 167 USB_ATTACH(usb) 168 { 169 struct usb_softc *sc = (struct usb_softc *)self; 170 usbd_device_handle dev; 171 usbd_status err; 172 int usbrev; 173 int speed; 174 struct usb_event *ue; 175 176 DPRINTF(("usbd_attach\n")); 177 178 sc->sc_bus = aux; 179 sc->sc_bus->usbctl = sc; 180 sc->sc_port.power = USB_MAX_POWER; 181 182 usbrev = sc->sc_bus->usbrev; 183 printf(": USB revision %s", usbrev_str[usbrev]); 184 switch (usbrev) { 185 case USBREV_1_0: 186 case USBREV_1_1: 187 speed = USB_SPEED_FULL; 188 break; 189 case USBREV_2_0: 190 speed = USB_SPEED_HIGH; 191 break; 192 default: 193 printf(", not supported\n"); 194 sc->sc_dying = 1; 195 USB_ATTACH_ERROR_RETURN; 196 } 197 printf("\n"); 198 199 /* Make sure not to use tsleep() if we are cold booting. */ 200 if (cold) 201 sc->sc_bus->use_polling++; 202 203 ue = usb_alloc_event(); 204 ue->u.ue_ctrlr.ue_bus = USBDEVUNIT(sc->sc_dev); 205 usb_add_event(USB_EVENT_CTRLR_ATTACH, ue); 206 207 #ifdef USB_USE_SOFTINTR 208 /* XXX we should have our own level */ 209 sc->sc_bus->soft = softintr_establish(IPL_SOFTUSB, 210 sc->sc_bus->methods->soft_intr, sc->sc_bus); 211 if (sc->sc_bus->soft == NULL) { 212 printf("%s: can't register softintr\n", USBDEVNAME(sc->sc_dev)); 213 sc->sc_dying = 1; 214 USB_ATTACH_ERROR_RETURN; 215 } 216 #endif 217 218 err = usbd_new_device(USBDEV(sc->sc_dev), sc->sc_bus, 0, speed, 0, 219 &sc->sc_port); 220 if (!err) { 221 dev = sc->sc_port.device; 222 if (dev->hub == NULL) { 223 sc->sc_dying = 1; 224 printf("%s: root device is not a hub\n", 225 USBDEVNAME(sc->sc_dev)); 226 USB_ATTACH_ERROR_RETURN; 227 } 228 sc->sc_bus->root_hub = dev; 229 #if 1 230 /* 231 * Turning this code off will delay attachment of USB devices 232 * until the USB event thread is running, which means that 233 * the keyboard will not work until after cold boot. 234 */ 235 if (cold && (device_cfdata(&sc->sc_dev)->cf_flags & 1)) 236 dev->hub->explore(sc->sc_bus->root_hub); 237 #endif 238 } else { 239 printf("%s: root hub problem, error=%d\n", 240 USBDEVNAME(sc->sc_dev), err); 241 sc->sc_dying = 1; 242 } 243 if (cold) 244 sc->sc_bus->use_polling--; 245 246 config_pending_incr(); 247 usb_kthread_create(usb_create_event_thread, sc); 248 249 USB_ATTACH_SUCCESS_RETURN; 250 } 251 252 static const char *taskq_names[] = USB_TASKQ_NAMES; 253 254 #if defined(__NetBSD__) || defined(__OpenBSD__) 255 void 256 usb_create_event_thread(void *arg) 257 { 258 struct usb_softc *sc = arg; 259 struct usb_taskq *taskq; 260 int i; 261 262 if (usb_kthread_create1(PRI_NONE, 0, NULL, usb_event_thread, sc, 263 &sc->sc_event_thread, "%s", sc->sc_dev.dv_xname)) { 264 printf("%s: unable to create event thread for\n", 265 sc->sc_dev.dv_xname); 266 panic("usb_create_event_thread"); 267 } 268 for (i = 0; i < USB_NUM_TASKQS; i++) { 269 taskq = &usb_taskq[i]; 270 271 if (taskq->taskcreated) 272 continue; 273 274 TAILQ_INIT(&taskq->tasks); 275 taskq->taskcreated = 1; 276 taskq->name = taskq_names[i]; 277 if (usb_kthread_create1(PRI_NONE, 0, NULL, usb_task_thread, 278 taskq, &taskq->task_thread_lwp, taskq->name)) { 279 printf("unable to create task thread: %s\n", taskq->name); 280 panic("usb_create_event_thread task"); 281 } 282 } 283 } 284 285 /* 286 * Add a task to be performed by the task thread. This function can be 287 * called from any context and the task will be executed in a process 288 * context ASAP. 289 */ 290 void 291 usb_add_task(usbd_device_handle dev, struct usb_task *task, int queue) 292 { 293 struct usb_taskq *taskq; 294 int s; 295 296 taskq = &usb_taskq[queue]; 297 s = splusb(); 298 if (task->queue == -1) { 299 DPRINTFN(2,("usb_add_task: task=%p\n", task)); 300 TAILQ_INSERT_TAIL(&taskq->tasks, task, next); 301 task->queue = queue; 302 } else { 303 DPRINTFN(3,("usb_add_task: task=%p on q\n", task)); 304 } 305 wakeup(&taskq->tasks); 306 splx(s); 307 } 308 309 void 310 usb_rem_task(usbd_device_handle dev, struct usb_task *task) 311 { 312 struct usb_taskq *taskq; 313 int s; 314 315 taskq = &usb_taskq[task->queue]; 316 s = splusb(); 317 if (task->queue != -1) { 318 TAILQ_REMOVE(&taskq->tasks, task, next); 319 task->queue = -1; 320 } 321 splx(s); 322 } 323 324 void 325 usb_event_thread(void *arg) 326 { 327 struct usb_softc *sc = arg; 328 329 DPRINTF(("usb_event_thread: start\n")); 330 331 /* 332 * In case this controller is a companion controller to an 333 * EHCI controller we need to wait until the EHCI controller 334 * has grabbed the port. 335 * XXX It would be nicer to do this with a tsleep(), but I don't 336 * know how to synchronize the creation of the threads so it 337 * will work. 338 */ 339 usb_delay_ms(sc->sc_bus, 500); 340 341 /* Make sure first discover does something. */ 342 sc->sc_bus->needs_explore = 1; 343 usb_discover(sc); 344 config_pending_decr(); 345 346 while (!sc->sc_dying) { 347 #ifdef USB_DEBUG 348 if (usb_noexplore < 2) 349 #endif 350 usb_discover(sc); 351 #ifdef USB_DEBUG 352 (void)tsleep(&sc->sc_bus->needs_explore, PWAIT, "usbevt", 353 usb_noexplore ? 0 : hz * 60); 354 #else 355 (void)tsleep(&sc->sc_bus->needs_explore, PWAIT, "usbevt", 356 hz * 60); 357 #endif 358 DPRINTFN(2,("usb_event_thread: woke up\n")); 359 } 360 sc->sc_event_thread = NULL; 361 362 /* In case parent is waiting for us to exit. */ 363 wakeup(sc); 364 365 DPRINTF(("usb_event_thread: exit\n")); 366 kthread_exit(0); 367 } 368 369 void 370 usb_task_thread(void *arg) 371 { 372 struct usb_task *task; 373 struct usb_taskq *taskq; 374 int s; 375 376 taskq = arg; 377 DPRINTF(("usb_task_thread: start taskq %s\n", taskq->name)); 378 379 s = splusb(); 380 for (;;) { 381 task = TAILQ_FIRST(&taskq->tasks); 382 if (task == NULL) { 383 tsleep(&taskq->tasks, PWAIT, "usbtsk", 0); 384 task = TAILQ_FIRST(&taskq->tasks); 385 } 386 DPRINTFN(2,("usb_task_thread: woke up task=%p\n", task)); 387 if (task != NULL) { 388 TAILQ_REMOVE(&taskq->tasks, task, next); 389 task->queue = -1; 390 splx(s); 391 task->fun(task->arg); 392 s = splusb(); 393 } 394 } 395 } 396 397 int 398 usbctlprint(void *aux, const char *pnp) 399 { 400 /* only "usb"es can attach to host controllers */ 401 if (pnp) 402 aprint_normal("usb at %s", pnp); 403 404 return (UNCONF); 405 } 406 #endif /* defined(__NetBSD__) || defined(__OpenBSD__) */ 407 408 int 409 usbopen(dev_t dev, int flag, int mode, struct lwp *l) 410 { 411 int unit = minor(dev); 412 struct usb_softc *sc; 413 414 if (unit == USB_DEV_MINOR) { 415 if (usb_dev_open) 416 return (EBUSY); 417 usb_dev_open = 1; 418 usb_async_proc = 0; 419 return (0); 420 } 421 422 USB_GET_SC_OPEN(usb, unit, sc); 423 424 if (sc->sc_dying) 425 return (EIO); 426 427 return (0); 428 } 429 430 int 431 usbread(dev_t dev, struct uio *uio, int flag) 432 { 433 struct usb_event *ue; 434 #ifdef COMPAT_30 435 struct usb_event_old *ueo = NULL; /* XXXGCC */ 436 #endif 437 int s, error, n, useold; 438 439 if (minor(dev) != USB_DEV_MINOR) 440 return (ENXIO); 441 442 useold = 0; 443 switch (uio->uio_resid) { 444 #ifdef COMPAT_30 445 case sizeof(struct usb_event_old): 446 ueo = malloc(sizeof(struct usb_event_old), M_USBDEV, 447 M_WAITOK|M_ZERO); 448 useold = 1; 449 /* FALLTHRU */ 450 #endif 451 case sizeof(struct usb_event): 452 ue = usb_alloc_event(); 453 break; 454 default: 455 return (EINVAL); 456 } 457 458 error = 0; 459 s = splusb(); 460 for (;;) { 461 n = usb_get_next_event(ue); 462 if (n != 0) 463 break; 464 if (flag & IO_NDELAY) { 465 error = EWOULDBLOCK; 466 break; 467 } 468 error = tsleep(&usb_events, PZERO | PCATCH, "usbrea", 0); 469 if (error) 470 break; 471 } 472 splx(s); 473 if (!error) { 474 #ifdef COMPAT_30 475 if (useold) { /* copy fields to old struct */ 476 ueo->ue_type = ue->ue_type; 477 memcpy(&ueo->ue_time, &ue->ue_time, 478 sizeof(struct timespec)); 479 switch (ue->ue_type) { 480 case USB_EVENT_DEVICE_ATTACH: 481 case USB_EVENT_DEVICE_DETACH: 482 usb_copy_old_devinfo(&ueo->u.ue_device, &ue->u.ue_device); 483 break; 484 485 case USB_EVENT_CTRLR_ATTACH: 486 case USB_EVENT_CTRLR_DETACH: 487 ueo->u.ue_ctrlr.ue_bus=ue->u.ue_ctrlr.ue_bus; 488 break; 489 490 case USB_EVENT_DRIVER_ATTACH: 491 case USB_EVENT_DRIVER_DETACH: 492 ueo->u.ue_driver.ue_cookie=ue->u.ue_driver.ue_cookie; 493 memcpy(ueo->u.ue_driver.ue_devname, 494 ue->u.ue_driver.ue_devname, 495 sizeof(ue->u.ue_driver.ue_devname)); 496 break; 497 default: 498 ; 499 } 500 501 error = uiomove((void *)ueo, uio->uio_resid, uio); 502 } else 503 #endif 504 error = uiomove((void *)ue, uio->uio_resid, uio); 505 } 506 usb_free_event(ue); 507 #ifdef COMPAT_30 508 if (useold) 509 free(ueo, M_USBDEV); 510 #endif 511 512 return (error); 513 } 514 515 int 516 usbclose(dev_t dev, int flag, int mode, 517 struct lwp *l) 518 { 519 int unit = minor(dev); 520 521 if (unit == USB_DEV_MINOR) { 522 usb_async_proc = 0; 523 usb_dev_open = 0; 524 } 525 526 return (0); 527 } 528 529 int 530 usbioctl(dev_t devt, u_long cmd, void *data, int flag, struct lwp *l) 531 { 532 struct usb_softc *sc; 533 int unit = minor(devt); 534 535 if (unit == USB_DEV_MINOR) { 536 switch (cmd) { 537 case FIONBIO: 538 /* All handled in the upper FS layer. */ 539 return (0); 540 541 case FIOASYNC: 542 if (*(int *)data) 543 usb_async_proc = l->l_proc; 544 else 545 usb_async_proc = 0; 546 return (0); 547 548 default: 549 return (EINVAL); 550 } 551 } 552 553 USB_GET_SC(usb, unit, sc); 554 555 if (sc->sc_dying) 556 return (EIO); 557 558 switch (cmd) { 559 #ifdef USB_DEBUG 560 case USB_SETDEBUG: 561 if (!(flag & FWRITE)) 562 return (EBADF); 563 usbdebug = ((*(int *)data) & 0x000000ff); 564 #if defined(UHCI_DEBUG) && NUHCI > 0 565 uhcidebug = ((*(int *)data) & 0x0000ff00) >> 8; 566 #endif 567 #if defined(OHCI_DEBUG) && NOHCI > 0 568 ohcidebug = ((*(int *)data) & 0x00ff0000) >> 16; 569 #endif 570 break; 571 #endif /* USB_DEBUG */ 572 case USB_REQUEST: 573 { 574 struct usb_ctl_request *ur = (void *)data; 575 int len = UGETW(ur->ucr_request.wLength); 576 struct iovec iov; 577 struct uio uio; 578 void *ptr = 0; 579 int addr = ur->ucr_addr; 580 usbd_status err; 581 int error = 0; 582 583 if (!(flag & FWRITE)) 584 return (EBADF); 585 586 DPRINTF(("usbioctl: USB_REQUEST addr=%d len=%d\n", addr, len)); 587 if (len < 0 || len > 32768) 588 return (EINVAL); 589 if (addr < 0 || addr >= USB_MAX_DEVICES || 590 sc->sc_bus->devices[addr] == 0) 591 return (EINVAL); 592 if (len != 0) { 593 iov.iov_base = (void *)ur->ucr_data; 594 iov.iov_len = len; 595 uio.uio_iov = &iov; 596 uio.uio_iovcnt = 1; 597 uio.uio_resid = len; 598 uio.uio_offset = 0; 599 uio.uio_rw = 600 ur->ucr_request.bmRequestType & UT_READ ? 601 UIO_READ : UIO_WRITE; 602 uio.uio_vmspace = l->l_proc->p_vmspace; 603 ptr = malloc(len, M_TEMP, M_WAITOK); 604 if (uio.uio_rw == UIO_WRITE) { 605 error = uiomove(ptr, len, &uio); 606 if (error) 607 goto ret; 608 } 609 } 610 err = usbd_do_request_flags(sc->sc_bus->devices[addr], 611 &ur->ucr_request, ptr, ur->ucr_flags, &ur->ucr_actlen, 612 USBD_DEFAULT_TIMEOUT); 613 if (err) { 614 error = EIO; 615 goto ret; 616 } 617 if (len != 0) { 618 if (uio.uio_rw == UIO_READ) { 619 error = uiomove(ptr, len, &uio); 620 if (error) 621 goto ret; 622 } 623 } 624 ret: 625 if (ptr) 626 free(ptr, M_TEMP); 627 return (error); 628 } 629 630 case USB_DEVICEINFO: 631 { 632 usbd_device_handle dev; 633 struct usb_device_info *di = (void *)data; 634 int addr = di->udi_addr; 635 636 if (addr < 1 || addr >= USB_MAX_DEVICES) 637 return EINVAL; 638 if ((dev = sc->sc_bus->devices[addr]) == NULL) 639 return ENXIO; 640 usbd_fill_deviceinfo(dev, di, 1); 641 break; 642 } 643 644 #ifdef COMPAT_30 645 case USB_DEVICEINFO_OLD: 646 { 647 usbd_device_handle dev; 648 struct usb_device_info_old *di = (void *)data; 649 int addr = di->udi_addr; 650 651 if (addr < 1 || addr >= USB_MAX_DEVICES) 652 return EINVAL; 653 if ((dev = sc->sc_bus->devices[addr]) == NULL) 654 return ENXIO; 655 usbd_fill_deviceinfo_old(dev, di, 1); 656 break; 657 } 658 #endif 659 660 case USB_DEVICESTATS: 661 *(struct usb_device_stats *)data = sc->sc_bus->stats; 662 break; 663 664 default: 665 return (EINVAL); 666 } 667 return (0); 668 } 669 670 int 671 usbpoll(dev_t dev, int events, struct lwp *l) 672 { 673 int revents, mask, s; 674 675 if (minor(dev) == USB_DEV_MINOR) { 676 revents = 0; 677 mask = POLLIN | POLLRDNORM; 678 679 s = splusb(); 680 if (events & mask && usb_nevents > 0) 681 revents |= events & mask; 682 if (revents == 0 && events & mask) 683 selrecord(l, &usb_selevent); 684 splx(s); 685 686 return (revents); 687 } else { 688 return (0); 689 } 690 } 691 692 static void 693 filt_usbrdetach(struct knote *kn) 694 { 695 int s; 696 697 s = splusb(); 698 SLIST_REMOVE(&usb_selevent.sel_klist, kn, knote, kn_selnext); 699 splx(s); 700 } 701 702 static int 703 filt_usbread(struct knote *kn, long hint) 704 { 705 706 if (usb_nevents == 0) 707 return (0); 708 709 kn->kn_data = sizeof(struct usb_event); 710 return (1); 711 } 712 713 static const struct filterops usbread_filtops = 714 { 1, NULL, filt_usbrdetach, filt_usbread }; 715 716 int 717 usbkqfilter(dev_t dev, struct knote *kn) 718 { 719 struct klist *klist; 720 int s; 721 722 switch (kn->kn_filter) { 723 case EVFILT_READ: 724 if (minor(dev) != USB_DEV_MINOR) 725 return (1); 726 klist = &usb_selevent.sel_klist; 727 kn->kn_fop = &usbread_filtops; 728 break; 729 730 default: 731 return (1); 732 } 733 734 kn->kn_hook = NULL; 735 736 s = splusb(); 737 SLIST_INSERT_HEAD(klist, kn, kn_selnext); 738 splx(s); 739 740 return (0); 741 } 742 743 /* Explore device tree from the root. */ 744 Static void 745 usb_discover(void *v) 746 { 747 struct usb_softc *sc = v; 748 749 DPRINTFN(2,("usb_discover\n")); 750 #ifdef USB_DEBUG 751 if (usb_noexplore > 1) 752 return; 753 #endif 754 /* 755 * We need mutual exclusion while traversing the device tree, 756 * but this is guaranteed since this function is only called 757 * from the event thread for the controller. 758 */ 759 while (sc->sc_bus->needs_explore && !sc->sc_dying) { 760 sc->sc_bus->needs_explore = 0; 761 sc->sc_bus->root_hub->hub->explore(sc->sc_bus->root_hub); 762 } 763 } 764 765 void 766 usb_needs_explore(usbd_device_handle dev) 767 { 768 DPRINTFN(2,("usb_needs_explore\n")); 769 dev->bus->needs_explore = 1; 770 wakeup(&dev->bus->needs_explore); 771 } 772 773 void 774 usb_needs_reattach(usbd_device_handle dev) 775 { 776 DPRINTFN(2,("usb_needs_reattach\n")); 777 dev->powersrc->reattach = 1; 778 dev->bus->needs_explore = 1; 779 wakeup(&dev->bus->needs_explore); 780 } 781 782 /* Called at splusb() */ 783 int 784 usb_get_next_event(struct usb_event *ue) 785 { 786 struct usb_event_q *ueq; 787 788 if (usb_nevents <= 0) 789 return (0); 790 ueq = SIMPLEQ_FIRST(&usb_events); 791 #ifdef DIAGNOSTIC 792 if (ueq == NULL) { 793 printf("usb: usb_nevents got out of sync! %d\n", usb_nevents); 794 usb_nevents = 0; 795 return (0); 796 } 797 #endif 798 if (ue) 799 *ue = ueq->ue; 800 SIMPLEQ_REMOVE_HEAD(&usb_events, next); 801 usb_free_event((struct usb_event *)(void *)ueq); 802 usb_nevents--; 803 return (1); 804 } 805 806 void 807 usbd_add_dev_event(int type, usbd_device_handle udev) 808 { 809 struct usb_event *ue = usb_alloc_event(); 810 811 usbd_fill_deviceinfo(udev, &ue->u.ue_device, USB_EVENT_IS_ATTACH(type)); 812 usb_add_event(type, ue); 813 } 814 815 void 816 usbd_add_drv_event(int type, usbd_device_handle udev, device_ptr_t dev) 817 { 818 struct usb_event *ue = usb_alloc_event(); 819 820 ue->u.ue_driver.ue_cookie = udev->cookie; 821 strncpy(ue->u.ue_driver.ue_devname, USBDEVPTRNAME(dev), 822 sizeof ue->u.ue_driver.ue_devname); 823 usb_add_event(type, ue); 824 } 825 826 Static struct usb_event * 827 usb_alloc_event(void) 828 { 829 /* Yes, this is right; we allocate enough so that we can use it later */ 830 return malloc(sizeof(struct usb_event_q), M_USBDEV, M_WAITOK|M_ZERO); 831 } 832 833 Static void 834 usb_free_event(struct usb_event *uep) 835 { 836 free(uep, M_USBDEV); 837 } 838 839 Static void 840 usb_add_event(int type, struct usb_event *uep) 841 { 842 struct usb_event_q *ueq; 843 struct timeval thetime; 844 int s; 845 846 microtime(&thetime); 847 /* Don't want to wait here inside splusb() */ 848 ueq = (struct usb_event_q *)(void *)uep; 849 ueq->ue = *uep; 850 ueq->ue.ue_type = type; 851 TIMEVAL_TO_TIMESPEC(&thetime, &ueq->ue.ue_time); 852 853 s = splusb(); 854 if (++usb_nevents >= USB_MAX_EVENTS) { 855 /* Too many queued events, drop an old one. */ 856 DPRINTFN(-1,("usb: event dropped\n")); 857 (void)usb_get_next_event(0); 858 } 859 SIMPLEQ_INSERT_TAIL(&usb_events, ueq, next); 860 wakeup(&usb_events); 861 selnotify(&usb_selevent, 0); 862 if (usb_async_proc != NULL) { 863 mutex_enter(&proclist_mutex); 864 psignal(usb_async_proc, SIGIO); 865 mutex_exit(&proclist_mutex); 866 } 867 splx(s); 868 } 869 870 void 871 usb_schedsoftintr(usbd_bus_handle bus) 872 { 873 DPRINTFN(10,("usb_schedsoftintr: polling=%d\n", bus->use_polling)); 874 #ifdef USB_USE_SOFTINTR 875 if (bus->use_polling) { 876 bus->methods->soft_intr(bus); 877 } else { 878 softintr_schedule(bus->soft); 879 } 880 #else 881 bus->methods->soft_intr(bus); 882 #endif /* USB_USE_SOFTINTR */ 883 } 884 885 int 886 usb_activate(device_ptr_t self, enum devact act) 887 { 888 struct usb_softc *sc = (struct usb_softc *)self; 889 usbd_device_handle dev = sc->sc_port.device; 890 int i, rv = 0; 891 892 switch (act) { 893 case DVACT_ACTIVATE: 894 return (EOPNOTSUPP); 895 896 case DVACT_DEACTIVATE: 897 sc->sc_dying = 1; 898 if (dev != NULL && dev->cdesc != NULL && dev->subdevs != NULL) { 899 for (i = 0; dev->subdevs[i]; i++) 900 rv |= config_deactivate(dev->subdevs[i]); 901 } 902 break; 903 } 904 return (rv); 905 } 906 907 int 908 usb_detach(device_ptr_t self, int flags) 909 { 910 struct usb_softc *sc = (struct usb_softc *)self; 911 struct usb_event *ue; 912 913 DPRINTF(("usb_detach: start\n")); 914 915 /* Kill off event thread. */ 916 while (sc->sc_event_thread != NULL) { 917 wakeup(&sc->sc_bus->needs_explore); 918 tsleep(sc, PWAIT, "usbdet", hz * 60); 919 } 920 DPRINTF(("usb_detach: event thread dead\n")); 921 922 /* Make all devices disconnect. */ 923 if (sc->sc_port.device != NULL) 924 usb_disconnect_port(&sc->sc_port, self); 925 926 #ifdef USB_USE_SOFTINTR 927 if (sc->sc_bus->soft != NULL) { 928 softintr_disestablish(sc->sc_bus->soft); 929 sc->sc_bus->soft = NULL; 930 } 931 #endif 932 933 ue = usb_alloc_event(); 934 ue->u.ue_ctrlr.ue_bus = USBDEVUNIT(sc->sc_dev); 935 usb_add_event(USB_EVENT_CTRLR_DETACH, ue); 936 937 return (0); 938 } 939 940 #ifdef COMPAT_30 941 Static void 942 usb_copy_old_devinfo(struct usb_device_info_old *uo, 943 const struct usb_device_info *ue) 944 { 945 const unsigned char *p; 946 unsigned char *q; 947 int i, n; 948 949 uo->udi_bus = ue->udi_bus; 950 uo->udi_addr = ue->udi_addr; 951 uo->udi_cookie = ue->udi_cookie; 952 for (i = 0, p = (const unsigned char *)ue->udi_product, 953 q = (unsigned char *)uo->udi_product; 954 *p && i < USB_MAX_STRING_LEN - 1; p++) { 955 if (*p < 0x80) 956 q[i++] = *p; 957 else { 958 q[i++] = '?'; 959 if ((*p & 0xe0) == 0xe0) 960 p++; 961 p++; 962 } 963 } 964 q[i] = 0; 965 966 for (i = 0, p = ue->udi_vendor, q = uo->udi_vendor; 967 *p && i < USB_MAX_STRING_LEN - 1; p++) { 968 if (* p < 0x80) 969 q[i++] = *p; 970 else { 971 q[i++] = '?'; 972 p++; 973 if ((*p & 0xe0) == 0xe0) 974 p++; 975 } 976 } 977 q[i] = 0; 978 979 memcpy(uo->udi_release, ue->udi_release, sizeof(uo->udi_release)); 980 981 uo->udi_productNo = ue->udi_productNo; 982 uo->udi_vendorNo = ue->udi_vendorNo; 983 uo->udi_releaseNo = ue->udi_releaseNo; 984 uo->udi_class = ue->udi_class; 985 uo->udi_subclass = ue->udi_subclass; 986 uo->udi_protocol = ue->udi_protocol; 987 uo->udi_config = ue->udi_config; 988 uo->udi_speed = ue->udi_speed; 989 uo->udi_power = ue->udi_power; 990 uo->udi_nports = ue->udi_nports; 991 992 for (n=0; n<USB_MAX_DEVNAMES; n++) 993 memcpy(uo->udi_devnames[n], 994 ue->udi_devnames[n], USB_MAX_DEVNAMELEN); 995 memcpy(uo->udi_ports, ue->udi_ports, sizeof(uo->udi_ports)); 996 } 997 #endif 998
Indexes created Tue Sep 23 20:09:58 GMT 2025