usb.c revision 1.98.6.3
1 /* $NetBSD: usb.c,v 1.98.6.3 2007/10/26 15:47:56 joerg 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 1.98.6.3 2007/10/26 15:47:56 joerg 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 #include <sys/intr.h> 68 69 #include <dev/usb/usb.h> 70 #include <dev/usb/usbdi.h> 71 #include <dev/usb/usbdi_util.h> 72 73 #define USB_DEV_MINOR 255 74 75 #include <sys/bus.h> 76 77 #include <dev/usb/usbdivar.h> 78 #include <dev/usb/usb_quirks.h> 79 80 #ifdef USB_DEBUG 81 #define DPRINTF(x) if (usbdebug) logprintf x 82 #define DPRINTFN(n,x) if (usbdebug>(n)) logprintf x 83 int usbdebug = 0; 84 #if defined(UHCI_DEBUG) && NUHCI > 0 85 extern int uhcidebug; 86 #endif 87 #if defined(OHCI_DEBUG) && NOHCI > 0 88 extern int ohcidebug; 89 #endif 90 /* 91 * 0 - do usual exploration 92 * 1 - do not use timeout exploration 93 * >1 - do no exploration 94 */ 95 int usb_noexplore = 0; 96 #else 97 #define DPRINTF(x) 98 #define DPRINTFN(n,x) 99 #endif 100 101 struct usb_softc { 102 USBBASEDEVICE sc_dev; /* base device */ 103 usbd_bus_handle sc_bus; /* USB controller */ 104 struct usbd_port sc_port; /* dummy port for root hub */ 105 106 struct lwp *sc_event_thread; 107 108 char sc_dying; 109 }; 110 111 struct usb_taskq { 112 TAILQ_HEAD(, usb_task) tasks; 113 struct lwp *task_thread_lwp; 114 const char *name; 115 int taskcreated; /* task thread exists. */ 116 }; 117 118 static struct usb_taskq usb_taskq[USB_NUM_TASKQS]; 119 120 dev_type_open(usbopen); 121 dev_type_close(usbclose); 122 dev_type_read(usbread); 123 dev_type_ioctl(usbioctl); 124 dev_type_poll(usbpoll); 125 dev_type_kqfilter(usbkqfilter); 126 127 const struct cdevsw usb_cdevsw = { 128 usbopen, usbclose, usbread, nowrite, usbioctl, 129 nostop, notty, usbpoll, nommap, usbkqfilter, D_OTHER, 130 }; 131 132 Static void usb_discover(void *); 133 Static void usb_create_event_thread(void *); 134 Static void usb_event_thread(void *); 135 Static void usb_task_thread(void *); 136 137 #define USB_MAX_EVENTS 100 138 struct usb_event_q { 139 struct usb_event ue; 140 SIMPLEQ_ENTRY(usb_event_q) next; 141 }; 142 Static SIMPLEQ_HEAD(, usb_event_q) usb_events = 143 SIMPLEQ_HEAD_INITIALIZER(usb_events); 144 Static int usb_nevents = 0; 145 Static struct selinfo usb_selevent; 146 Static usb_proc_ptr usb_async_proc; /* process that wants USB SIGIO */ 147 Static int usb_dev_open = 0; 148 Static struct usb_event *usb_alloc_event(void); 149 Static void usb_free_event(struct usb_event *); 150 Static void usb_add_event(int, struct usb_event *); 151 152 Static int usb_get_next_event(struct usb_event *); 153 154 #ifdef COMPAT_30 155 Static void usb_copy_old_devinfo(struct usb_device_info_old *, const struct usb_device_info *); 156 #endif 157 158 Static const char *usbrev_str[] = USBREV_STR; 159 160 USB_DECLARE_DRIVER(usb); 161 162 USB_MATCH(usb) 163 { 164 DPRINTF(("usbd_match\n")); 165 return (UMATCH_GENERIC); 166 } 167 168 USB_ATTACH(usb) 169 { 170 struct usb_softc *sc = (struct usb_softc *)self; 171 usbd_device_handle dev; 172 usbd_status err; 173 int usbrev; 174 int speed; 175 struct usb_event *ue; 176 177 DPRINTF(("usbd_attach\n")); 178 179 sc->sc_bus = aux; 180 sc->sc_bus->usbctl = sc; 181 sc->sc_port.power = USB_MAX_POWER; 182 183 usbrev = sc->sc_bus->usbrev; 184 printf(": USB revision %s", usbrev_str[usbrev]); 185 switch (usbrev) { 186 case USBREV_1_0: 187 case USBREV_1_1: 188 speed = USB_SPEED_FULL; 189 break; 190 case USBREV_2_0: 191 speed = USB_SPEED_HIGH; 192 break; 193 default: 194 printf(", not supported\n"); 195 sc->sc_dying = 1; 196 USB_ATTACH_ERROR_RETURN; 197 } 198 printf("\n"); 199 200 /* Make sure not to use tsleep() if we are cold booting. */ 201 if (cold) 202 sc->sc_bus->use_polling++; 203 204 ue = usb_alloc_event(); 205 ue->u.ue_ctrlr.ue_bus = USBDEVUNIT(sc->sc_dev); 206 usb_add_event(USB_EVENT_CTRLR_ATTACH, ue); 207 208 #ifdef USB_USE_SOFTINTR 209 /* XXX we should have our own level */ 210 sc->sc_bus->soft = softint_establish(SOFTINT_NET, 211 sc->sc_bus->methods->soft_intr, sc->sc_bus); 212 if (sc->sc_bus->soft == NULL) { 213 printf("%s: can't register softintr\n", USBDEVNAME(sc->sc_dev)); 214 sc->sc_dying = 1; 215 USB_ATTACH_ERROR_RETURN; 216 } 217 #endif 218 219 err = usbd_new_device(USBDEV(sc->sc_dev), sc->sc_bus, 0, speed, 0, 220 &sc->sc_port); 221 if (!err) { 222 dev = sc->sc_port.device; 223 if (dev->hub == NULL) { 224 sc->sc_dying = 1; 225 printf("%s: root device is not a hub\n", 226 USBDEVNAME(sc->sc_dev)); 227 USB_ATTACH_ERROR_RETURN; 228 } 229 sc->sc_bus->root_hub = dev; 230 #if 1 231 /* 232 * Turning this code off will delay attachment of USB devices 233 * until the USB event thread is running, which means that 234 * the keyboard will not work until after cold boot. 235 */ 236 if (cold && (device_cfdata(&sc->sc_dev)->cf_flags & 1)) 237 dev->hub->explore(sc->sc_bus->root_hub); 238 #endif 239 } else { 240 printf("%s: root hub problem, error=%d\n", 241 USBDEVNAME(sc->sc_dev), err); 242 sc->sc_dying = 1; 243 } 244 if (cold) 245 sc->sc_bus->use_polling--; 246 247 config_pending_incr(); 248 usb_kthread_create(usb_create_event_thread, sc); 249 250 (void)pnp_register(self, pnp_generic_power); 251 252 USB_ATTACH_SUCCESS_RETURN; 253 } 254 255 static const char *taskq_names[] = USB_TASKQ_NAMES; 256 257 #if defined(__NetBSD__) || defined(__OpenBSD__) 258 void 259 usb_create_event_thread(void *arg) 260 { 261 struct usb_softc *sc = arg; 262 struct usb_taskq *taskq; 263 int i; 264 265 if (usb_kthread_create1(PRI_NONE, 0, NULL, usb_event_thread, sc, 266 &sc->sc_event_thread, "%s", sc->sc_dev.dv_xname)) { 267 printf("%s: unable to create event thread for\n", 268 sc->sc_dev.dv_xname); 269 panic("usb_create_event_thread"); 270 } 271 for (i = 0; i < USB_NUM_TASKQS; i++) { 272 taskq = &usb_taskq[i]; 273 274 if (taskq->taskcreated) 275 continue; 276 277 TAILQ_INIT(&taskq->tasks); 278 taskq->taskcreated = 1; 279 taskq->name = taskq_names[i]; 280 if (usb_kthread_create1(PRI_NONE, 0, NULL, usb_task_thread, 281 taskq, &taskq->task_thread_lwp, taskq->name)) { 282 printf("unable to create task thread: %s\n", taskq->name); 283 panic("usb_create_event_thread task"); 284 } 285 } 286 } 287 288 /* 289 * Add a task to be performed by the task thread. This function can be 290 * called from any context and the task will be executed in a process 291 * context ASAP. 292 */ 293 void 294 usb_add_task(usbd_device_handle dev, struct usb_task *task, int queue) 295 { 296 struct usb_taskq *taskq; 297 int s; 298 299 taskq = &usb_taskq[queue]; 300 s = splusb(); 301 if (task->queue == -1) { 302 DPRINTFN(2,("usb_add_task: task=%p\n", task)); 303 TAILQ_INSERT_TAIL(&taskq->tasks, task, next); 304 task->queue = queue; 305 } else { 306 DPRINTFN(3,("usb_add_task: task=%p on q\n", task)); 307 } 308 wakeup(&taskq->tasks); 309 splx(s); 310 } 311 312 void 313 usb_rem_task(usbd_device_handle dev, struct usb_task *task) 314 { 315 struct usb_taskq *taskq; 316 int s; 317 318 taskq = &usb_taskq[task->queue]; 319 s = splusb(); 320 if (task->queue != -1) { 321 TAILQ_REMOVE(&taskq->tasks, task, next); 322 task->queue = -1; 323 } 324 splx(s); 325 } 326 327 void 328 usb_event_thread(void *arg) 329 { 330 struct usb_softc *sc = arg; 331 332 DPRINTF(("usb_event_thread: start\n")); 333 334 /* 335 * In case this controller is a companion controller to an 336 * EHCI controller we need to wait until the EHCI controller 337 * has grabbed the port. 338 * XXX It would be nicer to do this with a tsleep(), but I don't 339 * know how to synchronize the creation of the threads so it 340 * will work. 341 */ 342 usb_delay_ms(sc->sc_bus, 500); 343 344 /* Make sure first discover does something. */ 345 sc->sc_bus->needs_explore = 1; 346 usb_discover(sc); 347 config_pending_decr(); 348 349 while (!sc->sc_dying) { 350 #ifdef USB_DEBUG 351 if (usb_noexplore < 2) 352 #endif 353 usb_discover(sc); 354 #ifdef USB_DEBUG 355 (void)tsleep(&sc->sc_bus->needs_explore, PWAIT, "usbevt", 356 usb_noexplore ? 0 : hz * 60); 357 #else 358 (void)tsleep(&sc->sc_bus->needs_explore, PWAIT, "usbevt", 359 hz * 60); 360 #endif 361 DPRINTFN(2,("usb_event_thread: woke up\n")); 362 } 363 sc->sc_event_thread = NULL; 364 365 /* In case parent is waiting for us to exit. */ 366 wakeup(sc); 367 368 DPRINTF(("usb_event_thread: exit\n")); 369 kthread_exit(0); 370 } 371 372 void 373 usb_task_thread(void *arg) 374 { 375 struct usb_task *task; 376 struct usb_taskq *taskq; 377 int s; 378 379 taskq = arg; 380 DPRINTF(("usb_task_thread: start taskq %s\n", taskq->name)); 381 382 s = splusb(); 383 for (;;) { 384 task = TAILQ_FIRST(&taskq->tasks); 385 if (task == NULL) { 386 tsleep(&taskq->tasks, PWAIT, "usbtsk", 0); 387 task = TAILQ_FIRST(&taskq->tasks); 388 } 389 DPRINTFN(2,("usb_task_thread: woke up task=%p\n", task)); 390 if (task != NULL) { 391 TAILQ_REMOVE(&taskq->tasks, task, next); 392 task->queue = -1; 393 splx(s); 394 task->fun(task->arg); 395 s = splusb(); 396 } 397 } 398 } 399 400 int 401 usbctlprint(void *aux, const char *pnp) 402 { 403 /* only "usb"es can attach to host controllers */ 404 if (pnp) 405 aprint_normal("usb at %s", pnp); 406 407 return (UNCONF); 408 } 409 #endif /* defined(__NetBSD__) || defined(__OpenBSD__) */ 410 411 int 412 usbopen(dev_t dev, int flag, int mode, struct lwp *l) 413 { 414 int unit = minor(dev); 415 struct usb_softc *sc; 416 417 if (unit == USB_DEV_MINOR) { 418 if (usb_dev_open) 419 return (EBUSY); 420 usb_dev_open = 1; 421 usb_async_proc = 0; 422 return (0); 423 } 424 425 USB_GET_SC_OPEN(usb, unit, sc); 426 427 if (sc->sc_dying) 428 return (EIO); 429 430 return (0); 431 } 432 433 int 434 usbread(dev_t dev, struct uio *uio, int flag) 435 { 436 struct usb_event *ue; 437 #ifdef COMPAT_30 438 struct usb_event_old *ueo = NULL; /* XXXGCC */ 439 #endif 440 int s, error, n, useold; 441 442 if (minor(dev) != USB_DEV_MINOR) 443 return (ENXIO); 444 445 useold = 0; 446 switch (uio->uio_resid) { 447 #ifdef COMPAT_30 448 case sizeof(struct usb_event_old): 449 ueo = malloc(sizeof(struct usb_event_old), M_USBDEV, 450 M_WAITOK|M_ZERO); 451 useold = 1; 452 /* FALLTHRU */ 453 #endif 454 case sizeof(struct usb_event): 455 ue = usb_alloc_event(); 456 break; 457 default: 458 return (EINVAL); 459 } 460 461 error = 0; 462 s = splusb(); 463 for (;;) { 464 n = usb_get_next_event(ue); 465 if (n != 0) 466 break; 467 if (flag & IO_NDELAY) { 468 error = EWOULDBLOCK; 469 break; 470 } 471 error = tsleep(&usb_events, PZERO | PCATCH, "usbrea", 0); 472 if (error) 473 break; 474 } 475 splx(s); 476 if (!error) { 477 #ifdef COMPAT_30 478 if (useold) { /* copy fields to old struct */ 479 ueo->ue_type = ue->ue_type; 480 memcpy(&ueo->ue_time, &ue->ue_time, 481 sizeof(struct timespec)); 482 switch (ue->ue_type) { 483 case USB_EVENT_DEVICE_ATTACH: 484 case USB_EVENT_DEVICE_DETACH: 485 usb_copy_old_devinfo(&ueo->u.ue_device, &ue->u.ue_device); 486 break; 487 488 case USB_EVENT_CTRLR_ATTACH: 489 case USB_EVENT_CTRLR_DETACH: 490 ueo->u.ue_ctrlr.ue_bus=ue->u.ue_ctrlr.ue_bus; 491 break; 492 493 case USB_EVENT_DRIVER_ATTACH: 494 case USB_EVENT_DRIVER_DETACH: 495 ueo->u.ue_driver.ue_cookie=ue->u.ue_driver.ue_cookie; 496 memcpy(ueo->u.ue_driver.ue_devname, 497 ue->u.ue_driver.ue_devname, 498 sizeof(ue->u.ue_driver.ue_devname)); 499 break; 500 default: 501 ; 502 } 503 504 error = uiomove((void *)ueo, uio->uio_resid, uio); 505 } else 506 #endif 507 error = uiomove((void *)ue, uio->uio_resid, uio); 508 } 509 usb_free_event(ue); 510 #ifdef COMPAT_30 511 if (useold) 512 free(ueo, M_USBDEV); 513 #endif 514 515 return (error); 516 } 517 518 int 519 usbclose(dev_t dev, int flag, int mode, 520 struct lwp *l) 521 { 522 int unit = minor(dev); 523 524 if (unit == USB_DEV_MINOR) { 525 usb_async_proc = 0; 526 usb_dev_open = 0; 527 } 528 529 return (0); 530 } 531 532 int 533 usbioctl(dev_t devt, u_long cmd, void *data, int flag, struct lwp *l) 534 { 535 struct usb_softc *sc; 536 int unit = minor(devt); 537 538 if (unit == USB_DEV_MINOR) { 539 switch (cmd) { 540 case FIONBIO: 541 /* All handled in the upper FS layer. */ 542 return (0); 543 544 case FIOASYNC: 545 if (*(int *)data) 546 usb_async_proc = l->l_proc; 547 else 548 usb_async_proc = 0; 549 return (0); 550 551 default: 552 return (EINVAL); 553 } 554 } 555 556 USB_GET_SC(usb, unit, sc); 557 558 if (sc->sc_dying) 559 return (EIO); 560 561 switch (cmd) { 562 #ifdef USB_DEBUG 563 case USB_SETDEBUG: 564 if (!(flag & FWRITE)) 565 return (EBADF); 566 usbdebug = ((*(int *)data) & 0x000000ff); 567 #if defined(UHCI_DEBUG) && NUHCI > 0 568 uhcidebug = ((*(int *)data) & 0x0000ff00) >> 8; 569 #endif 570 #if defined(OHCI_DEBUG) && NOHCI > 0 571 ohcidebug = ((*(int *)data) & 0x00ff0000) >> 16; 572 #endif 573 break; 574 #endif /* USB_DEBUG */ 575 case USB_REQUEST: 576 { 577 struct usb_ctl_request *ur = (void *)data; 578 int len = UGETW(ur->ucr_request.wLength); 579 struct iovec iov; 580 struct uio uio; 581 void *ptr = 0; 582 int addr = ur->ucr_addr; 583 usbd_status err; 584 int error = 0; 585 586 if (!(flag & FWRITE)) 587 return (EBADF); 588 589 DPRINTF(("usbioctl: USB_REQUEST addr=%d len=%d\n", addr, len)); 590 if (len < 0 || len > 32768) 591 return (EINVAL); 592 if (addr < 0 || addr >= USB_MAX_DEVICES || 593 sc->sc_bus->devices[addr] == 0) 594 return (EINVAL); 595 if (len != 0) { 596 iov.iov_base = (void *)ur->ucr_data; 597 iov.iov_len = len; 598 uio.uio_iov = &iov; 599 uio.uio_iovcnt = 1; 600 uio.uio_resid = len; 601 uio.uio_offset = 0; 602 uio.uio_rw = 603 ur->ucr_request.bmRequestType & UT_READ ? 604 UIO_READ : UIO_WRITE; 605 uio.uio_vmspace = l->l_proc->p_vmspace; 606 ptr = malloc(len, M_TEMP, M_WAITOK); 607 if (uio.uio_rw == UIO_WRITE) { 608 error = uiomove(ptr, len, &uio); 609 if (error) 610 goto ret; 611 } 612 } 613 err = usbd_do_request_flags(sc->sc_bus->devices[addr], 614 &ur->ucr_request, ptr, ur->ucr_flags, &ur->ucr_actlen, 615 USBD_DEFAULT_TIMEOUT); 616 if (err) { 617 error = EIO; 618 goto ret; 619 } 620 if (len != 0) { 621 if (uio.uio_rw == UIO_READ) { 622 error = uiomove(ptr, len, &uio); 623 if (error) 624 goto ret; 625 } 626 } 627 ret: 628 if (ptr) 629 free(ptr, M_TEMP); 630 return (error); 631 } 632 633 case USB_DEVICEINFO: 634 { 635 usbd_device_handle dev; 636 struct usb_device_info *di = (void *)data; 637 int addr = di->udi_addr; 638 639 if (addr < 1 || addr >= USB_MAX_DEVICES) 640 return EINVAL; 641 if ((dev = sc->sc_bus->devices[addr]) == NULL) 642 return ENXIO; 643 usbd_fill_deviceinfo(dev, di, 1); 644 break; 645 } 646 647 #ifdef COMPAT_30 648 case USB_DEVICEINFO_OLD: 649 { 650 usbd_device_handle dev; 651 struct usb_device_info_old *di = (void *)data; 652 int addr = di->udi_addr; 653 654 if (addr < 1 || addr >= USB_MAX_DEVICES) 655 return EINVAL; 656 if ((dev = sc->sc_bus->devices[addr]) == NULL) 657 return ENXIO; 658 usbd_fill_deviceinfo_old(dev, di, 1); 659 break; 660 } 661 #endif 662 663 case USB_DEVICESTATS: 664 *(struct usb_device_stats *)data = sc->sc_bus->stats; 665 break; 666 667 default: 668 return (EINVAL); 669 } 670 return (0); 671 } 672 673 int 674 usbpoll(dev_t dev, int events, struct lwp *l) 675 { 676 int revents, mask, s; 677 678 if (minor(dev) == USB_DEV_MINOR) { 679 revents = 0; 680 mask = POLLIN | POLLRDNORM; 681 682 s = splusb(); 683 if (events & mask && usb_nevents > 0) 684 revents |= events & mask; 685 if (revents == 0 && events & mask) 686 selrecord(l, &usb_selevent); 687 splx(s); 688 689 return (revents); 690 } else { 691 return (0); 692 } 693 } 694 695 static void 696 filt_usbrdetach(struct knote *kn) 697 { 698 int s; 699 700 s = splusb(); 701 SLIST_REMOVE(&usb_selevent.sel_klist, kn, knote, kn_selnext); 702 splx(s); 703 } 704 705 static int 706 filt_usbread(struct knote *kn, long hint) 707 { 708 709 if (usb_nevents == 0) 710 return (0); 711 712 kn->kn_data = sizeof(struct usb_event); 713 return (1); 714 } 715 716 static const struct filterops usbread_filtops = 717 { 1, NULL, filt_usbrdetach, filt_usbread }; 718 719 int 720 usbkqfilter(dev_t dev, struct knote *kn) 721 { 722 struct klist *klist; 723 int s; 724 725 switch (kn->kn_filter) { 726 case EVFILT_READ: 727 if (minor(dev) != USB_DEV_MINOR) 728 return (1); 729 klist = &usb_selevent.sel_klist; 730 kn->kn_fop = &usbread_filtops; 731 break; 732 733 default: 734 return (1); 735 } 736 737 kn->kn_hook = NULL; 738 739 s = splusb(); 740 SLIST_INSERT_HEAD(klist, kn, kn_selnext); 741 splx(s); 742 743 return (0); 744 } 745 746 /* Explore device tree from the root. */ 747 Static void 748 usb_discover(void *v) 749 { 750 struct usb_softc *sc = v; 751 752 DPRINTFN(2,("usb_discover\n")); 753 #ifdef USB_DEBUG 754 if (usb_noexplore > 1) 755 return; 756 #endif 757 /* 758 * We need mutual exclusion while traversing the device tree, 759 * but this is guaranteed since this function is only called 760 * from the event thread for the controller. 761 */ 762 while (sc->sc_bus->needs_explore && !sc->sc_dying) { 763 sc->sc_bus->needs_explore = 0; 764 sc->sc_bus->root_hub->hub->explore(sc->sc_bus->root_hub); 765 } 766 } 767 768 void 769 usb_needs_explore(usbd_device_handle dev) 770 { 771 DPRINTFN(2,("usb_needs_explore\n")); 772 dev->bus->needs_explore = 1; 773 wakeup(&dev->bus->needs_explore); 774 } 775 776 void 777 usb_needs_reattach(usbd_device_handle dev) 778 { 779 DPRINTFN(2,("usb_needs_reattach\n")); 780 dev->powersrc->reattach = 1; 781 dev->bus->needs_explore = 1; 782 wakeup(&dev->bus->needs_explore); 783 } 784 785 /* Called at splusb() */ 786 int 787 usb_get_next_event(struct usb_event *ue) 788 { 789 struct usb_event_q *ueq; 790 791 if (usb_nevents <= 0) 792 return (0); 793 ueq = SIMPLEQ_FIRST(&usb_events); 794 #ifdef DIAGNOSTIC 795 if (ueq == NULL) { 796 printf("usb: usb_nevents got out of sync! %d\n", usb_nevents); 797 usb_nevents = 0; 798 return (0); 799 } 800 #endif 801 if (ue) 802 *ue = ueq->ue; 803 SIMPLEQ_REMOVE_HEAD(&usb_events, next); 804 usb_free_event((struct usb_event *)(void *)ueq); 805 usb_nevents--; 806 return (1); 807 } 808 809 void 810 usbd_add_dev_event(int type, usbd_device_handle udev) 811 { 812 struct usb_event *ue = usb_alloc_event(); 813 814 usbd_fill_deviceinfo(udev, &ue->u.ue_device, USB_EVENT_IS_ATTACH(type)); 815 usb_add_event(type, ue); 816 } 817 818 void 819 usbd_add_drv_event(int type, usbd_device_handle udev, device_ptr_t dev) 820 { 821 struct usb_event *ue = usb_alloc_event(); 822 823 ue->u.ue_driver.ue_cookie = udev->cookie; 824 strncpy(ue->u.ue_driver.ue_devname, USBDEVPTRNAME(dev), 825 sizeof ue->u.ue_driver.ue_devname); 826 usb_add_event(type, ue); 827 } 828 829 Static struct usb_event * 830 usb_alloc_event(void) 831 { 832 /* Yes, this is right; we allocate enough so that we can use it later */ 833 return malloc(sizeof(struct usb_event_q), M_USBDEV, M_WAITOK|M_ZERO); 834 } 835 836 Static void 837 usb_free_event(struct usb_event *uep) 838 { 839 free(uep, M_USBDEV); 840 } 841 842 Static void 843 usb_add_event(int type, struct usb_event *uep) 844 { 845 struct usb_event_q *ueq; 846 struct timeval thetime; 847 int s; 848 849 microtime(&thetime); 850 /* Don't want to wait here inside splusb() */ 851 ueq = (struct usb_event_q *)(void *)uep; 852 ueq->ue = *uep; 853 ueq->ue.ue_type = type; 854 TIMEVAL_TO_TIMESPEC(&thetime, &ueq->ue.ue_time); 855 856 s = splusb(); 857 if (++usb_nevents >= USB_MAX_EVENTS) { 858 /* Too many queued events, drop an old one. */ 859 DPRINTFN(-1,("usb: event dropped\n")); 860 (void)usb_get_next_event(0); 861 } 862 SIMPLEQ_INSERT_TAIL(&usb_events, ueq, next); 863 wakeup(&usb_events); 864 selnotify(&usb_selevent, 0); 865 if (usb_async_proc != NULL) { 866 mutex_enter(&proclist_mutex); 867 psignal(usb_async_proc, SIGIO); 868 mutex_exit(&proclist_mutex); 869 } 870 splx(s); 871 } 872 873 void 874 usb_schedsoftintr(usbd_bus_handle bus) 875 { 876 DPRINTFN(10,("usb_schedsoftintr: polling=%d\n", bus->use_polling)); 877 #ifdef USB_USE_SOFTINTR 878 if (bus->use_polling) { 879 bus->methods->soft_intr(bus); 880 } else { 881 softint_schedule(bus->soft); 882 } 883 #else 884 bus->methods->soft_intr(bus); 885 #endif /* USB_USE_SOFTINTR */ 886 } 887 888 int 889 usb_activate(device_ptr_t self, enum devact act) 890 { 891 struct usb_softc *sc = (struct usb_softc *)self; 892 usbd_device_handle dev = sc->sc_port.device; 893 int i, rv = 0; 894 895 switch (act) { 896 case DVACT_ACTIVATE: 897 return (EOPNOTSUPP); 898 899 case DVACT_DEACTIVATE: 900 sc->sc_dying = 1; 901 if (dev != NULL && dev->cdesc != NULL && dev->subdevs != NULL) { 902 for (i = 0; dev->subdevs[i]; i++) 903 rv |= config_deactivate(dev->subdevs[i]); 904 } 905 break; 906 } 907 return (rv); 908 } 909 910 int 911 usb_detach(device_ptr_t self, int flags) 912 { 913 struct usb_softc *sc = (struct usb_softc *)self; 914 struct usb_event *ue; 915 916 DPRINTF(("usb_detach: start\n")); 917 918 /* Kill off event thread. */ 919 while (sc->sc_event_thread != NULL) { 920 wakeup(&sc->sc_bus->needs_explore); 921 tsleep(sc, PWAIT, "usbdet", hz * 60); 922 } 923 DPRINTF(("usb_detach: event thread dead\n")); 924 925 /* Make all devices disconnect. */ 926 if (sc->sc_port.device != NULL) 927 usb_disconnect_port(&sc->sc_port, self); 928 929 #ifdef USB_USE_SOFTINTR 930 if (sc->sc_bus->soft != NULL) { 931 softint_disestablish(sc->sc_bus->soft); 932 sc->sc_bus->soft = NULL; 933 } 934 #endif 935 936 ue = usb_alloc_event(); 937 ue->u.ue_ctrlr.ue_bus = USBDEVUNIT(sc->sc_dev); 938 usb_add_event(USB_EVENT_CTRLR_DETACH, ue); 939 940 return (0); 941 } 942 943 #ifdef COMPAT_30 944 Static void 945 usb_copy_old_devinfo(struct usb_device_info_old *uo, 946 const struct usb_device_info *ue) 947 { 948 const unsigned char *p; 949 unsigned char *q; 950 int i, n; 951 952 uo->udi_bus = ue->udi_bus; 953 uo->udi_addr = ue->udi_addr; 954 uo->udi_cookie = ue->udi_cookie; 955 for (i = 0, p = (const unsigned char *)ue->udi_product, 956 q = (unsigned char *)uo->udi_product; 957 *p && i < USB_MAX_STRING_LEN - 1; p++) { 958 if (*p < 0x80) 959 q[i++] = *p; 960 else { 961 q[i++] = '?'; 962 if ((*p & 0xe0) == 0xe0) 963 p++; 964 p++; 965 } 966 } 967 q[i] = 0; 968 969 for (i = 0, p = ue->udi_vendor, q = uo->udi_vendor; 970 *p && i < USB_MAX_STRING_LEN - 1; p++) { 971 if (* p < 0x80) 972 q[i++] = *p; 973 else { 974 q[i++] = '?'; 975 p++; 976 if ((*p & 0xe0) == 0xe0) 977 p++; 978 } 979 } 980 q[i] = 0; 981 982 memcpy(uo->udi_release, ue->udi_release, sizeof(uo->udi_release)); 983 984 uo->udi_productNo = ue->udi_productNo; 985 uo->udi_vendorNo = ue->udi_vendorNo; 986 uo->udi_releaseNo = ue->udi_releaseNo; 987 uo->udi_class = ue->udi_class; 988 uo->udi_subclass = ue->udi_subclass; 989 uo->udi_protocol = ue->udi_protocol; 990 uo->udi_config = ue->udi_config; 991 uo->udi_speed = ue->udi_speed; 992 uo->udi_power = ue->udi_power; 993 uo->udi_nports = ue->udi_nports; 994 995 for (n=0; n<USB_MAX_DEVNAMES; n++) 996 memcpy(uo->udi_devnames[n], 997 ue->udi_devnames[n], USB_MAX_DEVNAMELEN); 998 memcpy(uo->udi_ports, ue->udi_ports, sizeof(uo->udi_ports)); 999 } 1000 #endif 1001
Indexes created Mon Sep 29 03:10:08 GMT 2025