usb.c revision 1.106.6.3
1 /* $NetBSD: usb.c,v 1.106.6.3 2008/04/06 09:58:51 mjf 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 1.106.6.3 2008/04/06 09:58:51 mjf 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 #if 0 103 USBBASEDEVICE sc_dev; /* base device */ 104 #endif 105 usbd_bus_handle sc_bus; /* USB controller */ 106 struct usbd_port sc_port; /* dummy port for root hub */ 107 108 struct lwp *sc_event_thread; 109 110 char sc_dying; 111 }; 112 113 struct usb_taskq { 114 TAILQ_HEAD(, usb_task) tasks; 115 struct lwp *task_thread_lwp; 116 const char *name; 117 int taskcreated; /* task thread exists. */ 118 }; 119 120 static struct usb_taskq usb_taskq[USB_NUM_TASKQS]; 121 122 dev_type_open(usbopen); 123 dev_type_close(usbclose); 124 dev_type_read(usbread); 125 dev_type_ioctl(usbioctl); 126 dev_type_poll(usbpoll); 127 dev_type_kqfilter(usbkqfilter); 128 129 const struct cdevsw usb_cdevsw = { 130 usbopen, usbclose, usbread, nowrite, usbioctl, 131 nostop, notty, usbpoll, nommap, usbkqfilter, D_OTHER, 132 }; 133 134 Static void usb_discover(struct usb_softc *); 135 Static void usb_create_event_thread(device_t); 136 Static void usb_event_thread(void *); 137 Static void usb_task_thread(void *); 138 139 #define USB_MAX_EVENTS 100 140 struct usb_event_q { 141 struct usb_event ue; 142 SIMPLEQ_ENTRY(usb_event_q) next; 143 }; 144 Static SIMPLEQ_HEAD(, usb_event_q) usb_events = 145 SIMPLEQ_HEAD_INITIALIZER(usb_events); 146 Static int usb_nevents = 0; 147 Static struct selinfo usb_selevent; 148 Static usb_proc_ptr usb_async_proc; /* process that wants USB SIGIO */ 149 Static int usb_dev_open = 0; 150 Static struct usb_event *usb_alloc_event(void); 151 Static void usb_free_event(struct usb_event *); 152 Static void usb_add_event(int, struct usb_event *); 153 154 Static int usb_get_next_event(struct usb_event *); 155 156 #ifdef COMPAT_30 157 Static void usb_copy_old_devinfo(struct usb_device_info_old *, const struct usb_device_info *); 158 #endif 159 160 Static const char *usbrev_str[] = USBREV_STR; 161 162 static int usb_match(device_t, struct cfdata *, void *); 163 static void usb_attach(device_t, device_t, void *); 164 static int usb_detach(device_t, int); 165 static int usb_activate(device_t, enum devact); 166 static void usb_childdet(device_t, device_t); 167 static void usb_doattach(device_t); 168 169 extern struct cfdriver usb_cd; 170 171 CFATTACH_DECL2_NEW(usb, sizeof(struct usb_softc), 172 usb_match, usb_attach, usb_detach, usb_activate, NULL, usb_childdet); 173 174 USB_MATCH(usb) 175 { 176 DPRINTF(("usbd_match\n")); 177 return (UMATCH_GENERIC); 178 } 179 180 USB_ATTACH(usb) 181 { 182 struct usb_softc *sc = device_private(self); 183 int usbrev, maj; 184 185 sc->sc_bus = aux; 186 usbrev = sc->sc_bus->usbrev; 187 188 aprint_naive("\n"); 189 aprint_normal(": USB revision %s", usbrev_str[usbrev]); 190 switch (usbrev) { 191 case USBREV_1_0: 192 case USBREV_1_1: 193 case USBREV_2_0: 194 break; 195 default: 196 aprint_error(", not supported\n"); 197 sc->sc_dying = 1; 198 USB_ATTACH_ERROR_RETURN; 199 } 200 aprint_normal("\n"); 201 202 config_interrupts(self, usb_doattach); 203 204 maj = cdevsw_lookup_major(&usb_cdevsw); 205 device_register_name(makedev(maj, device_unit(self)), self, true, 206 DEV_OTHER, device_xname(self)); 207 } 208 209 static void 210 usb_doattach(device_t self) 211 { 212 static bool usb_selevent_init; /* XXX */ 213 struct usb_softc *sc = device_private(self); 214 usbd_device_handle dev; 215 usbd_status err; 216 int speed; 217 struct usb_event *ue; 218 219 if (!usb_selevent_init) { 220 selinit(&usb_selevent); 221 usb_selevent_init = true; 222 } 223 DPRINTF(("usbd_doattach\n")); 224 225 sc->sc_bus->usbctl = self; 226 sc->sc_port.power = USB_MAX_POWER; 227 228 switch (sc->sc_bus->usbrev) { 229 case USBREV_1_0: 230 case USBREV_1_1: 231 speed = USB_SPEED_FULL; 232 break; 233 case USBREV_2_0: 234 speed = USB_SPEED_HIGH; 235 break; 236 default: 237 panic("usb_doattach"); 238 } 239 240 ue = usb_alloc_event(); 241 ue->u.ue_ctrlr.ue_bus = device_unit(self); 242 usb_add_event(USB_EVENT_CTRLR_ATTACH, ue); 243 244 #ifdef USB_USE_SOFTINTR 245 /* XXX we should have our own level */ 246 sc->sc_bus->soft = softint_establish(SOFTINT_NET, 247 sc->sc_bus->methods->soft_intr, sc->sc_bus); 248 if (sc->sc_bus->soft == NULL) { 249 aprint_error("%s: can't register softintr\n", 250 device_xname(self)); 251 sc->sc_dying = 1; 252 USB_ATTACH_ERROR_RETURN; 253 } 254 #endif 255 256 err = usbd_new_device(self, sc->sc_bus, 0, speed, 0, 257 &sc->sc_port); 258 if (!err) { 259 dev = sc->sc_port.device; 260 if (dev->hub == NULL) { 261 sc->sc_dying = 1; 262 aprint_error("%s: root device is not a hub\n", 263 device_xname(self)); 264 USB_ATTACH_ERROR_RETURN; 265 } 266 sc->sc_bus->root_hub = dev; 267 #if 1 268 /* 269 * Turning this code off will delay attachment of USB devices 270 * until the USB event thread is running, which means that 271 * the keyboard will not work until after cold boot. 272 */ 273 if (cold && (device_cfdata(self)->cf_flags & 1)) 274 dev->hub->explore(sc->sc_bus->root_hub); 275 #endif 276 } else { 277 aprint_error("%s: root hub problem, error=%d\n", 278 device_xname(self), err); 279 sc->sc_dying = 1; 280 } 281 282 config_pending_incr(); 283 usb_create_event_thread(self); 284 285 if (!pmf_device_register(self, NULL, NULL)) 286 aprint_error_dev(self, "couldn't establish power handler\n"); 287 288 USB_ATTACH_SUCCESS_RETURN; 289 } 290 291 static const char *taskq_names[] = USB_TASKQ_NAMES; 292 293 #if defined(__NetBSD__) || defined(__OpenBSD__) 294 void 295 usb_create_event_thread(device_t self) 296 { 297 struct usb_softc *sc = device_private(self); 298 struct usb_taskq *taskq; 299 int i; 300 301 if (usb_kthread_create1(PRI_NONE, 0, NULL, usb_event_thread, sc, 302 &sc->sc_event_thread, "%s", device_xname(self))) { 303 printf("%s: unable to create event thread for\n", 304 device_xname(self)); 305 panic("usb_create_event_thread"); 306 } 307 for (i = 0; i < USB_NUM_TASKQS; i++) { 308 taskq = &usb_taskq[i]; 309 310 if (taskq->taskcreated) 311 continue; 312 313 TAILQ_INIT(&taskq->tasks); 314 taskq->taskcreated = 1; 315 taskq->name = taskq_names[i]; 316 if (usb_kthread_create1(PRI_NONE, 0, NULL, usb_task_thread, 317 taskq, &taskq->task_thread_lwp, taskq->name)) { 318 printf("unable to create task thread: %s\n", taskq->name); 319 panic("usb_create_event_thread task"); 320 } 321 } 322 } 323 324 /* 325 * Add a task to be performed by the task thread. This function can be 326 * called from any context and the task will be executed in a process 327 * context ASAP. 328 */ 329 void 330 usb_add_task(usbd_device_handle dev, struct usb_task *task, int queue) 331 { 332 struct usb_taskq *taskq; 333 int s; 334 335 taskq = &usb_taskq[queue]; 336 s = splusb(); 337 if (task->queue == -1) { 338 DPRINTFN(2,("usb_add_task: task=%p\n", task)); 339 TAILQ_INSERT_TAIL(&taskq->tasks, task, next); 340 task->queue = queue; 341 } else { 342 DPRINTFN(3,("usb_add_task: task=%p on q\n", task)); 343 } 344 wakeup(&taskq->tasks); 345 splx(s); 346 } 347 348 void 349 usb_rem_task(usbd_device_handle dev, struct usb_task *task) 350 { 351 struct usb_taskq *taskq; 352 int s; 353 354 taskq = &usb_taskq[task->queue]; 355 s = splusb(); 356 if (task->queue != -1) { 357 TAILQ_REMOVE(&taskq->tasks, task, next); 358 task->queue = -1; 359 } 360 splx(s); 361 } 362 363 void 364 usb_event_thread(void *arg) 365 { 366 struct usb_softc *sc = arg; 367 368 DPRINTF(("usb_event_thread: start\n")); 369 370 /* 371 * In case this controller is a companion controller to an 372 * EHCI controller we need to wait until the EHCI controller 373 * has grabbed the port. 374 * XXX It would be nicer to do this with a tsleep(), but I don't 375 * know how to synchronize the creation of the threads so it 376 * will work. 377 */ 378 usb_delay_ms(sc->sc_bus, 500); 379 380 /* Make sure first discover does something. */ 381 sc->sc_bus->needs_explore = 1; 382 usb_discover(sc); 383 config_pending_decr(); 384 385 while (!sc->sc_dying) { 386 #ifdef USB_DEBUG 387 if (usb_noexplore < 2) 388 #endif 389 usb_discover(sc); 390 #ifdef USB_DEBUG 391 (void)tsleep(&sc->sc_bus->needs_explore, PWAIT, "usbevt", 392 usb_noexplore ? 0 : hz * 60); 393 #else 394 (void)tsleep(&sc->sc_bus->needs_explore, PWAIT, "usbevt", 395 hz * 60); 396 #endif 397 DPRINTFN(2,("usb_event_thread: woke up\n")); 398 } 399 sc->sc_event_thread = NULL; 400 401 /* In case parent is waiting for us to exit. */ 402 wakeup(sc); 403 404 DPRINTF(("usb_event_thread: exit\n")); 405 kthread_exit(0); 406 } 407 408 void 409 usb_task_thread(void *arg) 410 { 411 struct usb_task *task; 412 struct usb_taskq *taskq; 413 int s; 414 415 taskq = arg; 416 DPRINTF(("usb_task_thread: start taskq %s\n", taskq->name)); 417 418 s = splusb(); 419 for (;;) { 420 task = TAILQ_FIRST(&taskq->tasks); 421 if (task == NULL) { 422 tsleep(&taskq->tasks, PWAIT, "usbtsk", 0); 423 task = TAILQ_FIRST(&taskq->tasks); 424 } 425 DPRINTFN(2,("usb_task_thread: woke up task=%p\n", task)); 426 if (task != NULL) { 427 TAILQ_REMOVE(&taskq->tasks, task, next); 428 task->queue = -1; 429 splx(s); 430 task->fun(task->arg); 431 s = splusb(); 432 } 433 } 434 } 435 436 int 437 usbctlprint(void *aux, const char *pnp) 438 { 439 /* only "usb"es can attach to host controllers */ 440 if (pnp) 441 aprint_normal("usb at %s", pnp); 442 443 return (UNCONF); 444 } 445 #endif /* defined(__NetBSD__) || defined(__OpenBSD__) */ 446 447 int 448 usbopen(dev_t dev, int flag, int mode, struct lwp *l) 449 { 450 int unit = minor(dev); 451 struct usb_softc *sc; 452 453 if (unit == USB_DEV_MINOR) { 454 if (usb_dev_open) 455 return (EBUSY); 456 usb_dev_open = 1; 457 usb_async_proc = 0; 458 return (0); 459 } 460 461 sc = device_lookup_private(&usb_cd, unit); 462 463 if (sc->sc_dying) 464 return (EIO); 465 466 return (0); 467 } 468 469 int 470 usbread(dev_t dev, struct uio *uio, int flag) 471 { 472 struct usb_event *ue; 473 #ifdef COMPAT_30 474 struct usb_event_old *ueo = NULL; /* XXXGCC */ 475 #endif 476 int s, error, n, useold; 477 478 if (minor(dev) != USB_DEV_MINOR) 479 return (ENXIO); 480 481 useold = 0; 482 switch (uio->uio_resid) { 483 #ifdef COMPAT_30 484 case sizeof(struct usb_event_old): 485 ueo = malloc(sizeof(struct usb_event_old), M_USBDEV, 486 M_WAITOK|M_ZERO); 487 useold = 1; 488 /* FALLTHRU */ 489 #endif 490 case sizeof(struct usb_event): 491 ue = usb_alloc_event(); 492 break; 493 default: 494 return (EINVAL); 495 } 496 497 error = 0; 498 s = splusb(); 499 for (;;) { 500 n = usb_get_next_event(ue); 501 if (n != 0) 502 break; 503 if (flag & IO_NDELAY) { 504 error = EWOULDBLOCK; 505 break; 506 } 507 error = tsleep(&usb_events, PZERO | PCATCH, "usbrea", 0); 508 if (error) 509 break; 510 } 511 splx(s); 512 if (!error) { 513 #ifdef COMPAT_30 514 if (useold) { /* copy fields to old struct */ 515 ueo->ue_type = ue->ue_type; 516 memcpy(&ueo->ue_time, &ue->ue_time, 517 sizeof(struct timespec)); 518 switch (ue->ue_type) { 519 case USB_EVENT_DEVICE_ATTACH: 520 case USB_EVENT_DEVICE_DETACH: 521 usb_copy_old_devinfo(&ueo->u.ue_device, &ue->u.ue_device); 522 break; 523 524 case USB_EVENT_CTRLR_ATTACH: 525 case USB_EVENT_CTRLR_DETACH: 526 ueo->u.ue_ctrlr.ue_bus=ue->u.ue_ctrlr.ue_bus; 527 break; 528 529 case USB_EVENT_DRIVER_ATTACH: 530 case USB_EVENT_DRIVER_DETACH: 531 ueo->u.ue_driver.ue_cookie=ue->u.ue_driver.ue_cookie; 532 memcpy(ueo->u.ue_driver.ue_devname, 533 ue->u.ue_driver.ue_devname, 534 sizeof(ue->u.ue_driver.ue_devname)); 535 break; 536 default: 537 ; 538 } 539 540 error = uiomove((void *)ueo, sizeof *ueo, uio); 541 } else 542 #endif 543 error = uiomove((void *)ue, sizeof *ue, uio); 544 } 545 usb_free_event(ue); 546 #ifdef COMPAT_30 547 if (useold) 548 free(ueo, M_USBDEV); 549 #endif 550 551 return (error); 552 } 553 554 int 555 usbclose(dev_t dev, int flag, int mode, 556 struct lwp *l) 557 { 558 int unit = minor(dev); 559 560 if (unit == USB_DEV_MINOR) { 561 usb_async_proc = 0; 562 usb_dev_open = 0; 563 } 564 565 return (0); 566 } 567 568 int 569 usbioctl(dev_t devt, u_long cmd, void *data, int flag, struct lwp *l) 570 { 571 struct usb_softc *sc; 572 int unit = minor(devt); 573 574 if (unit == USB_DEV_MINOR) { 575 switch (cmd) { 576 case FIONBIO: 577 /* All handled in the upper FS layer. */ 578 return (0); 579 580 case FIOASYNC: 581 if (*(int *)data) 582 usb_async_proc = l->l_proc; 583 else 584 usb_async_proc = 0; 585 return (0); 586 587 default: 588 return (EINVAL); 589 } 590 } 591 592 sc = device_lookup_private(&usb_cd, unit); 593 594 if (sc->sc_dying) 595 return (EIO); 596 597 switch (cmd) { 598 #ifdef USB_DEBUG 599 case USB_SETDEBUG: 600 if (!(flag & FWRITE)) 601 return (EBADF); 602 usbdebug = ((*(int *)data) & 0x000000ff); 603 #if defined(UHCI_DEBUG) && NUHCI > 0 604 uhcidebug = ((*(int *)data) & 0x0000ff00) >> 8; 605 #endif 606 #if defined(OHCI_DEBUG) && NOHCI > 0 607 ohcidebug = ((*(int *)data) & 0x00ff0000) >> 16; 608 #endif 609 break; 610 #endif /* USB_DEBUG */ 611 case USB_REQUEST: 612 { 613 struct usb_ctl_request *ur = (void *)data; 614 int len = UGETW(ur->ucr_request.wLength); 615 struct iovec iov; 616 struct uio uio; 617 void *ptr = 0; 618 int addr = ur->ucr_addr; 619 usbd_status err; 620 int error = 0; 621 622 if (!(flag & FWRITE)) 623 return (EBADF); 624 625 DPRINTF(("usbioctl: USB_REQUEST addr=%d len=%d\n", addr, len)); 626 if (len < 0 || len > 32768) 627 return (EINVAL); 628 if (addr < 0 || addr >= USB_MAX_DEVICES || 629 sc->sc_bus->devices[addr] == 0) 630 return (EINVAL); 631 if (len != 0) { 632 iov.iov_base = (void *)ur->ucr_data; 633 iov.iov_len = len; 634 uio.uio_iov = &iov; 635 uio.uio_iovcnt = 1; 636 uio.uio_resid = len; 637 uio.uio_offset = 0; 638 uio.uio_rw = 639 ur->ucr_request.bmRequestType & UT_READ ? 640 UIO_READ : UIO_WRITE; 641 uio.uio_vmspace = l->l_proc->p_vmspace; 642 ptr = malloc(len, M_TEMP, M_WAITOK); 643 if (uio.uio_rw == UIO_WRITE) { 644 error = uiomove(ptr, len, &uio); 645 if (error) 646 goto ret; 647 } 648 } 649 err = usbd_do_request_flags(sc->sc_bus->devices[addr], 650 &ur->ucr_request, ptr, ur->ucr_flags, &ur->ucr_actlen, 651 USBD_DEFAULT_TIMEOUT); 652 if (err) { 653 error = EIO; 654 goto ret; 655 } 656 if (len > ur->ucr_actlen) 657 len = ur->ucr_actlen; 658 if (len != 0) { 659 if (uio.uio_rw == UIO_READ) { 660 error = uiomove(ptr, len, &uio); 661 if (error) 662 goto ret; 663 } 664 } 665 ret: 666 if (ptr) 667 free(ptr, M_TEMP); 668 return (error); 669 } 670 671 case USB_DEVICEINFO: 672 { 673 usbd_device_handle dev; 674 struct usb_device_info *di = (void *)data; 675 int addr = di->udi_addr; 676 677 if (addr < 1 || addr >= USB_MAX_DEVICES) 678 return EINVAL; 679 if ((dev = sc->sc_bus->devices[addr]) == NULL) 680 return ENXIO; 681 usbd_fill_deviceinfo(dev, di, 1); 682 break; 683 } 684 685 #ifdef COMPAT_30 686 case USB_DEVICEINFO_OLD: 687 { 688 usbd_device_handle dev; 689 struct usb_device_info_old *di = (void *)data; 690 int addr = di->udi_addr; 691 692 if (addr < 1 || addr >= USB_MAX_DEVICES) 693 return EINVAL; 694 if ((dev = sc->sc_bus->devices[addr]) == NULL) 695 return ENXIO; 696 usbd_fill_deviceinfo_old(dev, di, 1); 697 break; 698 } 699 #endif 700 701 case USB_DEVICESTATS: 702 *(struct usb_device_stats *)data = sc->sc_bus->stats; 703 break; 704 705 default: 706 return (EINVAL); 707 } 708 return (0); 709 } 710 711 int 712 usbpoll(dev_t dev, int events, struct lwp *l) 713 { 714 int revents, mask, s; 715 716 if (minor(dev) == USB_DEV_MINOR) { 717 revents = 0; 718 mask = POLLIN | POLLRDNORM; 719 720 s = splusb(); 721 if (events & mask && usb_nevents > 0) 722 revents |= events & mask; 723 if (revents == 0 && events & mask) 724 selrecord(l, &usb_selevent); 725 splx(s); 726 727 return (revents); 728 } else { 729 return (0); 730 } 731 } 732 733 static void 734 filt_usbrdetach(struct knote *kn) 735 { 736 int s; 737 738 s = splusb(); 739 SLIST_REMOVE(&usb_selevent.sel_klist, kn, knote, kn_selnext); 740 splx(s); 741 } 742 743 static int 744 filt_usbread(struct knote *kn, long hint) 745 { 746 747 if (usb_nevents == 0) 748 return (0); 749 750 kn->kn_data = sizeof(struct usb_event); 751 return (1); 752 } 753 754 static const struct filterops usbread_filtops = 755 { 1, NULL, filt_usbrdetach, filt_usbread }; 756 757 int 758 usbkqfilter(dev_t dev, struct knote *kn) 759 { 760 struct klist *klist; 761 int s; 762 763 switch (kn->kn_filter) { 764 case EVFILT_READ: 765 if (minor(dev) != USB_DEV_MINOR) 766 return (1); 767 klist = &usb_selevent.sel_klist; 768 kn->kn_fop = &usbread_filtops; 769 break; 770 771 default: 772 return (EINVAL); 773 } 774 775 kn->kn_hook = NULL; 776 777 s = splusb(); 778 SLIST_INSERT_HEAD(klist, kn, kn_selnext); 779 splx(s); 780 781 return (0); 782 } 783 784 /* Explore device tree from the root. */ 785 Static void 786 usb_discover(struct usb_softc *sc) 787 { 788 789 DPRINTFN(2,("usb_discover\n")); 790 #ifdef USB_DEBUG 791 if (usb_noexplore > 1) 792 return; 793 #endif 794 /* 795 * We need mutual exclusion while traversing the device tree, 796 * but this is guaranteed since this function is only called 797 * from the event thread for the controller. 798 */ 799 while (sc->sc_bus->needs_explore && !sc->sc_dying) { 800 sc->sc_bus->needs_explore = 0; 801 sc->sc_bus->root_hub->hub->explore(sc->sc_bus->root_hub); 802 } 803 } 804 805 void 806 usb_needs_explore(usbd_device_handle dev) 807 { 808 DPRINTFN(2,("usb_needs_explore\n")); 809 dev->bus->needs_explore = 1; 810 wakeup(&dev->bus->needs_explore); 811 } 812 813 void 814 usb_needs_reattach(usbd_device_handle dev) 815 { 816 DPRINTFN(2,("usb_needs_reattach\n")); 817 dev->powersrc->reattach = 1; 818 dev->bus->needs_explore = 1; 819 wakeup(&dev->bus->needs_explore); 820 } 821 822 /* Called at splusb() */ 823 int 824 usb_get_next_event(struct usb_event *ue) 825 { 826 struct usb_event_q *ueq; 827 828 if (usb_nevents <= 0) 829 return (0); 830 ueq = SIMPLEQ_FIRST(&usb_events); 831 #ifdef DIAGNOSTIC 832 if (ueq == NULL) { 833 printf("usb: usb_nevents got out of sync! %d\n", usb_nevents); 834 usb_nevents = 0; 835 return (0); 836 } 837 #endif 838 if (ue) 839 *ue = ueq->ue; 840 SIMPLEQ_REMOVE_HEAD(&usb_events, next); 841 usb_free_event((struct usb_event *)(void *)ueq); 842 usb_nevents--; 843 return (1); 844 } 845 846 void 847 usbd_add_dev_event(int type, usbd_device_handle udev) 848 { 849 struct usb_event *ue = usb_alloc_event(); 850 851 usbd_fill_deviceinfo(udev, &ue->u.ue_device, USB_EVENT_IS_ATTACH(type)); 852 usb_add_event(type, ue); 853 } 854 855 void 856 usbd_add_drv_event(int type, usbd_device_handle udev, device_ptr_t dev) 857 { 858 struct usb_event *ue = usb_alloc_event(); 859 860 ue->u.ue_driver.ue_cookie = udev->cookie; 861 strncpy(ue->u.ue_driver.ue_devname, USBDEVPTRNAME(dev), 862 sizeof ue->u.ue_driver.ue_devname); 863 usb_add_event(type, ue); 864 } 865 866 Static struct usb_event * 867 usb_alloc_event(void) 868 { 869 /* Yes, this is right; we allocate enough so that we can use it later */ 870 return malloc(sizeof(struct usb_event_q), M_USBDEV, M_WAITOK|M_ZERO); 871 } 872 873 Static void 874 usb_free_event(struct usb_event *uep) 875 { 876 free(uep, M_USBDEV); 877 } 878 879 Static void 880 usb_add_event(int type, struct usb_event *uep) 881 { 882 struct usb_event_q *ueq; 883 struct timeval thetime; 884 int s; 885 886 microtime(&thetime); 887 /* Don't want to wait here inside splusb() */ 888 ueq = (struct usb_event_q *)(void *)uep; 889 ueq->ue = *uep; 890 ueq->ue.ue_type = type; 891 TIMEVAL_TO_TIMESPEC(&thetime, &ueq->ue.ue_time); 892 893 s = splusb(); 894 if (++usb_nevents >= USB_MAX_EVENTS) { 895 /* Too many queued events, drop an old one. */ 896 DPRINTFN(-1,("usb: event dropped\n")); 897 (void)usb_get_next_event(0); 898 } 899 SIMPLEQ_INSERT_TAIL(&usb_events, ueq, next); 900 wakeup(&usb_events); 901 selnotify(&usb_selevent, 0, 0); 902 if (usb_async_proc != NULL) { 903 mutex_enter(&proclist_mutex); 904 psignal(usb_async_proc, SIGIO); 905 mutex_exit(&proclist_mutex); 906 } 907 splx(s); 908 } 909 910 void 911 usb_schedsoftintr(usbd_bus_handle bus) 912 { 913 DPRINTFN(10,("usb_schedsoftintr: polling=%d\n", bus->use_polling)); 914 #ifdef USB_USE_SOFTINTR 915 if (bus->use_polling) { 916 bus->methods->soft_intr(bus); 917 } else { 918 softint_schedule(bus->soft); 919 } 920 #else 921 bus->methods->soft_intr(bus); 922 #endif /* USB_USE_SOFTINTR */ 923 } 924 925 int 926 usb_activate(device_t self, enum devact act) 927 { 928 struct usb_softc *sc = device_private(self); 929 usbd_device_handle dev = sc->sc_port.device; 930 int i, rv = 0; 931 932 switch (act) { 933 case DVACT_ACTIVATE: 934 return (EOPNOTSUPP); 935 936 case DVACT_DEACTIVATE: 937 sc->sc_dying = 1; 938 if (dev != NULL && dev->cdesc != NULL && dev->subdevs != NULL) { 939 for (i = 0; dev->subdevs[i]; i++) 940 rv |= config_deactivate(dev->subdevs[i]); 941 } 942 break; 943 } 944 return (rv); 945 } 946 947 void 948 usb_childdet(device_t self, device_t child) 949 { 950 int i, last = -1; 951 struct usb_softc *sc = device_private(self); 952 struct usbd_device *dev; 953 954 if ((dev = sc->sc_port.device) == NULL || dev->subdevs == NULL) 955 return; 956 957 for (i = 0; dev->subdevs[i] != NULL; i++) 958 last = i; 959 960 for (i = 0; dev->subdevs[i] != NULL; i++) { 961 if (dev->subdevs[i] == child) { 962 dev->subdevs[i] = dev->subdevs[last]; 963 dev->subdevs[last] = NULL; 964 } 965 } 966 } 967 968 int 969 usb_detach(device_t self, int flags) 970 { 971 struct usb_softc *sc = device_private(self); 972 struct usb_event *ue; 973 974 DPRINTF(("usb_detach: start\n")); 975 976 device_deregister_all(self); 977 pmf_device_deregister(self); 978 /* Kill off event thread. */ 979 while (sc->sc_event_thread != NULL) { 980 wakeup(&sc->sc_bus->needs_explore); 981 tsleep(sc, PWAIT, "usbdet", hz * 60); 982 } 983 DPRINTF(("usb_detach: event thread dead\n")); 984 985 /* Make all devices disconnect. */ 986 if (sc->sc_port.device != NULL) 987 usb_disconnect_port(&sc->sc_port, self); 988 989 #ifdef USB_USE_SOFTINTR 990 if (sc->sc_bus->soft != NULL) { 991 softint_disestablish(sc->sc_bus->soft); 992 sc->sc_bus->soft = NULL; 993 } 994 #endif 995 996 ue = usb_alloc_event(); 997 ue->u.ue_ctrlr.ue_bus = device_unit(self); 998 usb_add_event(USB_EVENT_CTRLR_DETACH, ue); 999 1000 return (0); 1001 } 1002 1003 #ifdef COMPAT_30 1004 Static void 1005 usb_copy_old_devinfo(struct usb_device_info_old *uo, 1006 const struct usb_device_info *ue) 1007 { 1008 const unsigned char *p; 1009 unsigned char *q; 1010 int i, n; 1011 1012 uo->udi_bus = ue->udi_bus; 1013 uo->udi_addr = ue->udi_addr; 1014 uo->udi_cookie = ue->udi_cookie; 1015 for (i = 0, p = (const unsigned char *)ue->udi_product, 1016 q = (unsigned char *)uo->udi_product; 1017 *p && i < USB_MAX_STRING_LEN - 1; p++) { 1018 if (*p < 0x80) 1019 q[i++] = *p; 1020 else { 1021 q[i++] = '?'; 1022 if ((*p & 0xe0) == 0xe0) 1023 p++; 1024 p++; 1025 } 1026 } 1027 q[i] = 0; 1028 1029 for (i = 0, p = ue->udi_vendor, q = uo->udi_vendor; 1030 *p && i < USB_MAX_STRING_LEN - 1; p++) { 1031 if (* p < 0x80) 1032 q[i++] = *p; 1033 else { 1034 q[i++] = '?'; 1035 p++; 1036 if ((*p & 0xe0) == 0xe0) 1037 p++; 1038 } 1039 } 1040 q[i] = 0; 1041 1042 memcpy(uo->udi_release, ue->udi_release, sizeof(uo->udi_release)); 1043 1044 uo->udi_productNo = ue->udi_productNo; 1045 uo->udi_vendorNo = ue->udi_vendorNo; 1046 uo->udi_releaseNo = ue->udi_releaseNo; 1047 uo->udi_class = ue->udi_class; 1048 uo->udi_subclass = ue->udi_subclass; 1049 uo->udi_protocol = ue->udi_protocol; 1050 uo->udi_config = ue->udi_config; 1051 uo->udi_speed = ue->udi_speed; 1052 uo->udi_power = ue->udi_power; 1053 uo->udi_nports = ue->udi_nports; 1054 1055 for (n=0; n<USB_MAX_DEVNAMES; n++) 1056 memcpy(uo->udi_devnames[n], 1057 ue->udi_devnames[n], USB_MAX_DEVNAMELEN); 1058 memcpy(uo->udi_ports, ue->udi_ports, sizeof(uo->udi_ports)); 1059 } 1060 #endif 1061
Indexes created Mon Sep 29 21:09:56 GMT 2025