uhub.c revision 1.69
1 /* $NetBSD: uhub.c,v 1.69 2004/10/22 12:03:21 augustss Exp $ */ 2 /* $FreeBSD: src/sys/dev/usb/uhub.c,v 1.18 1999/11/17 22:33:43 n_hibma Exp $ */ 3 4 /* 5 * Copyright (c) 1998 The NetBSD Foundation, Inc. 6 * All rights reserved. 7 * 8 * This code is derived from software contributed to The NetBSD Foundation 9 * by Lennart Augustsson (lennart (at) augustsson.net) at 10 * Carlstedt Research & Technology. 11 * 12 * Redistribution and use in source and binary forms, with or without 13 * modification, are permitted provided that the following conditions 14 * are met: 15 * 1. Redistributions of source code must retain the above copyright 16 * notice, this list of conditions and the following disclaimer. 17 * 2. Redistributions in binary form must reproduce the above copyright 18 * notice, this list of conditions and the following disclaimer in the 19 * documentation and/or other materials provided with the distribution. 20 * 3. All advertising materials mentioning features or use of this software 21 * must display the following acknowledgement: 22 * This product includes software developed by the NetBSD 23 * Foundation, Inc. and its contributors. 24 * 4. Neither the name of The NetBSD Foundation nor the names of its 25 * contributors may be used to endorse or promote products derived 26 * from this software without specific prior written permission. 27 * 28 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 29 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 30 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 31 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 32 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 33 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 34 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 35 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 36 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 37 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 38 * POSSIBILITY OF SUCH DAMAGE. 39 */ 40 41 /* 42 * USB spec: http://www.usb.org/developers/docs/usbspec.zip 43 */ 44 45 #include <sys/cdefs.h> 46 __KERNEL_RCSID(0, "$NetBSD: uhub.c,v 1.69 2004/10/22 12:03:21 augustss Exp $"); 47 48 #include <sys/param.h> 49 #include <sys/systm.h> 50 #include <sys/kernel.h> 51 #include <sys/malloc.h> 52 #if defined(__NetBSD__) || defined(__OpenBSD__) 53 #include <sys/device.h> 54 #include <sys/proc.h> 55 #elif defined(__FreeBSD__) 56 #include <sys/module.h> 57 #include <sys/bus.h> 58 #include "bus_if.h" 59 #endif 60 61 #include <machine/bus.h> 62 63 #include <dev/usb/usb.h> 64 #include <dev/usb/usbdi.h> 65 #include <dev/usb/usbdi_util.h> 66 #include <dev/usb/usbdivar.h> 67 68 #define UHUB_INTR_INTERVAL 255 /* ms */ 69 70 #ifdef UHUB_DEBUG 71 #define DPRINTF(x) if (uhubdebug) logprintf x 72 #define DPRINTFN(n,x) if (uhubdebug>(n)) logprintf x 73 int uhubdebug = 0; 74 #else 75 #define DPRINTF(x) 76 #define DPRINTFN(n,x) 77 #endif 78 79 struct uhub_softc { 80 USBBASEDEVICE sc_dev; /* base device */ 81 usbd_device_handle sc_hub; /* USB device */ 82 usbd_pipe_handle sc_ipipe; /* interrupt pipe */ 83 u_int8_t sc_status[1]; /* XXX more ports */ 84 u_char sc_running; 85 }; 86 #define UHUB_PROTO(sc) ((sc)->sc_hub->ddesc.bDeviceProtocol) 87 #define UHUB_IS_HIGH_SPEED(sc) (UHUB_PROTO(sc) != UDPROTO_FSHUB) 88 #define UHUB_IS_SINGLE_TT(sc) (UHUB_PROTO(sc) == UDPROTO_HSHUBSTT) 89 90 Static usbd_status uhub_explore(usbd_device_handle hub); 91 Static void uhub_intr(usbd_xfer_handle, usbd_private_handle,usbd_status); 92 93 #if defined(__FreeBSD__) 94 Static bus_child_detached_t uhub_child_detached; 95 #endif 96 97 98 /* 99 * We need two attachment points: 100 * hub to usb and hub to hub 101 * Every other driver only connects to hubs 102 */ 103 104 #if defined(__NetBSD__) || defined(__OpenBSD__) 105 USB_DECLARE_DRIVER(uhub); 106 107 /* Create the driver instance for the hub connected to hub case */ 108 CFATTACH_DECL(uhub_uhub, sizeof(struct uhub_softc), 109 uhub_match, uhub_attach, uhub_detach, uhub_activate); 110 #elif defined(__FreeBSD__) 111 USB_DECLARE_DRIVER_INIT(uhub, 112 DEVMETHOD(bus_child_detached, uhub_child_detached)); 113 114 /* Create the driver instance for the hub connected to usb case. */ 115 devclass_t uhubroot_devclass; 116 117 Static device_method_t uhubroot_methods[] = { 118 DEVMETHOD(device_probe, uhub_match), 119 DEVMETHOD(device_attach, uhub_attach), 120 121 /* detach is not allowed for a root hub */ 122 {0,0} 123 }; 124 125 Static driver_t uhubroot_driver = { 126 "uhub", 127 uhubroot_methods, 128 sizeof(struct uhub_softc) 129 }; 130 #endif 131 132 USB_MATCH(uhub) 133 { 134 USB_MATCH_START(uhub, uaa); 135 usb_device_descriptor_t *dd = usbd_get_device_descriptor(uaa->device); 136 137 DPRINTFN(5,("uhub_match, dd=%p\n", dd)); 138 /* 139 * The subclass for hubs seems to be 0 for some and 1 for others, 140 * so we just ignore the subclass. 141 */ 142 if (uaa->iface == NULL && dd->bDeviceClass == UDCLASS_HUB) 143 return (UMATCH_DEVCLASS_DEVSUBCLASS); 144 return (UMATCH_NONE); 145 } 146 147 USB_ATTACH(uhub) 148 { 149 USB_ATTACH_START(uhub, sc, uaa); 150 usbd_device_handle dev = uaa->device; 151 char devinfo[1024]; 152 usbd_status err; 153 struct usbd_hub *hub; 154 usb_device_request_t req; 155 usb_hub_descriptor_t hubdesc; 156 int p, port, nports, nremov, pwrdly; 157 usbd_interface_handle iface; 158 usb_endpoint_descriptor_t *ed; 159 160 DPRINTFN(1,("uhub_attach\n")); 161 sc->sc_hub = dev; 162 usbd_devinfo(dev, 1, devinfo, sizeof(devinfo)); 163 USB_ATTACH_SETUP; 164 printf("%s: %s\n", USBDEVNAME(sc->sc_dev), devinfo); 165 166 if (UHUB_IS_HIGH_SPEED(sc)) { 167 printf("%s: %s\n",USBDEVNAME(sc->sc_dev), 168 UHUB_IS_SINGLE_TT(sc) ? "single TT" : "multiple TTs"); 169 } 170 171 err = usbd_set_config_index(dev, 0, 1); 172 if (err) { 173 DPRINTF(("%s: configuration failed, error=%s\n", 174 USBDEVNAME(sc->sc_dev), usbd_errstr(err))); 175 USB_ATTACH_ERROR_RETURN; 176 } 177 178 if (dev->depth > USB_HUB_MAX_DEPTH) { 179 printf("%s: hub depth (%d) exceeded, hub ignored\n", 180 USBDEVNAME(sc->sc_dev), USB_HUB_MAX_DEPTH); 181 USB_ATTACH_ERROR_RETURN; 182 } 183 184 /* Get hub descriptor. */ 185 req.bmRequestType = UT_READ_CLASS_DEVICE; 186 req.bRequest = UR_GET_DESCRIPTOR; 187 USETW2(req.wValue, UDESC_HUB, 0); 188 USETW(req.wIndex, 0); 189 USETW(req.wLength, USB_HUB_DESCRIPTOR_SIZE); 190 DPRINTFN(1,("usb_init_hub: getting hub descriptor\n")); 191 err = usbd_do_request(dev, &req, &hubdesc); 192 nports = hubdesc.bNbrPorts; 193 if (!err && nports > 7) { 194 USETW(req.wLength, USB_HUB_DESCRIPTOR_SIZE + (nports+1) / 8); 195 err = usbd_do_request(dev, &req, &hubdesc); 196 } 197 if (err) { 198 DPRINTF(("%s: getting hub descriptor failed, error=%s\n", 199 USBDEVNAME(sc->sc_dev), usbd_errstr(err))); 200 USB_ATTACH_ERROR_RETURN; 201 } 202 203 for (nremov = 0, port = 1; port <= nports; port++) 204 if (!UHD_NOT_REMOV(&hubdesc, port)) 205 nremov++; 206 printf("%s: %d port%s with %d removable, %s powered\n", 207 USBDEVNAME(sc->sc_dev), nports, nports != 1 ? "s" : "", 208 nremov, dev->self_powered ? "self" : "bus"); 209 210 hub = malloc(sizeof(*hub) + (nports-1) * sizeof(struct usbd_port), 211 M_USBDEV, M_NOWAIT); 212 if (hub == NULL) 213 USB_ATTACH_ERROR_RETURN; 214 dev->hub = hub; 215 dev->hub->hubsoftc = sc; 216 hub->explore = uhub_explore; 217 hub->hubdesc = hubdesc; 218 219 DPRINTFN(1,("usbhub_init_hub: selfpowered=%d, parent=%p, " 220 "parent->selfpowered=%d\n", 221 dev->self_powered, dev->powersrc->parent, 222 dev->powersrc->parent ? 223 dev->powersrc->parent->self_powered : 0)); 224 225 if (!dev->self_powered && dev->powersrc->parent != NULL && 226 !dev->powersrc->parent->self_powered) { 227 printf("%s: bus powered hub connected to bus powered hub, " 228 "ignored\n", USBDEVNAME(sc->sc_dev)); 229 goto bad; 230 } 231 232 /* Set up interrupt pipe. */ 233 err = usbd_device2interface_handle(dev, 0, &iface); 234 if (err) { 235 printf("%s: no interface handle\n", USBDEVNAME(sc->sc_dev)); 236 goto bad; 237 } 238 ed = usbd_interface2endpoint_descriptor(iface, 0); 239 if (ed == NULL) { 240 printf("%s: no endpoint descriptor\n", USBDEVNAME(sc->sc_dev)); 241 goto bad; 242 } 243 if ((ed->bmAttributes & UE_XFERTYPE) != UE_INTERRUPT) { 244 printf("%s: bad interrupt endpoint\n", USBDEVNAME(sc->sc_dev)); 245 goto bad; 246 } 247 248 err = usbd_open_pipe_intr(iface, ed->bEndpointAddress, 249 USBD_SHORT_XFER_OK, &sc->sc_ipipe, sc, sc->sc_status, 250 sizeof(sc->sc_status), uhub_intr, UHUB_INTR_INTERVAL); 251 if (err) { 252 printf("%s: cannot open interrupt pipe\n", 253 USBDEVNAME(sc->sc_dev)); 254 goto bad; 255 } 256 257 /* Wait with power off for a while. */ 258 usbd_delay_ms(dev, USB_POWER_DOWN_TIME); 259 260 usbd_add_drv_event(USB_EVENT_DRIVER_ATTACH, dev, USBDEV(sc->sc_dev)); 261 262 /* 263 * To have the best chance of success we do things in the exact same 264 * order as Windoze98. This should not be necessary, but some 265 * devices do not follow the USB specs to the letter. 266 * 267 * These are the events on the bus when a hub is attached: 268 * Get device and config descriptors (see attach code) 269 * Get hub descriptor (see above) 270 * For all ports 271 * turn on power 272 * wait for power to become stable 273 * (all below happens in explore code) 274 * For all ports 275 * clear C_PORT_CONNECTION 276 * For all ports 277 * get port status 278 * if device connected 279 * wait 100 ms 280 * turn on reset 281 * wait 282 * clear C_PORT_RESET 283 * get port status 284 * proceed with device attachment 285 */ 286 287 /* Set up data structures */ 288 for (p = 0; p < nports; p++) { 289 struct usbd_port *up = &hub->ports[p]; 290 up->device = 0; 291 up->parent = dev; 292 up->portno = p+1; 293 if (dev->self_powered) 294 /* Self powered hub, give ports maximum current. */ 295 up->power = USB_MAX_POWER; 296 else 297 up->power = USB_MIN_POWER; 298 up->restartcnt = 0; 299 } 300 301 /* XXX should check for none, individual, or ganged power? */ 302 303 pwrdly = dev->hub->hubdesc.bPwrOn2PwrGood * UHD_PWRON_FACTOR 304 + USB_EXTRA_POWER_UP_TIME; 305 for (port = 1; port <= nports; port++) { 306 /* Turn the power on. */ 307 err = usbd_set_port_feature(dev, port, UHF_PORT_POWER); 308 if (err) 309 printf("%s: port %d power on failed, %s\n", 310 USBDEVNAME(sc->sc_dev), port, 311 usbd_errstr(err)); 312 DPRINTF(("usb_init_port: turn on port %d power\n", port)); 313 /* Wait for stable power. */ 314 usbd_delay_ms(dev, pwrdly); 315 } 316 317 /* The usual exploration will finish the setup. */ 318 319 sc->sc_running = 1; 320 321 USB_ATTACH_SUCCESS_RETURN; 322 323 bad: 324 free(hub, M_USBDEV); 325 dev->hub = 0; 326 USB_ATTACH_ERROR_RETURN; 327 } 328 329 usbd_status 330 uhub_explore(usbd_device_handle dev) 331 { 332 usb_hub_descriptor_t *hd = &dev->hub->hubdesc; 333 struct uhub_softc *sc = dev->hub->hubsoftc; 334 struct usbd_port *up; 335 usbd_status err; 336 int speed; 337 int port; 338 int change, status; 339 340 DPRINTFN(10, ("uhub_explore dev=%p addr=%d\n", dev, dev->address)); 341 342 if (!sc->sc_running) 343 return (USBD_NOT_STARTED); 344 345 /* Ignore hubs that are too deep. */ 346 if (dev->depth > USB_HUB_MAX_DEPTH) 347 return (USBD_TOO_DEEP); 348 349 for(port = 1; port <= hd->bNbrPorts; port++) { 350 up = &dev->hub->ports[port-1]; 351 err = usbd_get_port_status(dev, port, &up->status); 352 if (err) { 353 DPRINTF(("uhub_explore: get port status failed, " 354 "error=%s\n", usbd_errstr(err))); 355 continue; 356 } 357 status = UGETW(up->status.wPortStatus); 358 change = UGETW(up->status.wPortChange); 359 DPRINTFN(3,("uhub_explore: %s port %d status 0x%04x 0x%04x\n", 360 USBDEVNAME(sc->sc_dev), port, status, change)); 361 if (change & UPS_C_PORT_ENABLED) { 362 DPRINTF(("uhub_explore: C_PORT_ENABLED\n")); 363 usbd_clear_port_feature(dev, port, UHF_C_PORT_ENABLE); 364 if (change & UPS_C_CONNECT_STATUS) { 365 /* Ignore the port error if the device 366 vanished. */ 367 } else if (status & UPS_PORT_ENABLED) { 368 printf("%s: illegal enable change, port %d\n", 369 USBDEVNAME(sc->sc_dev), port); 370 } else { 371 /* Port error condition. */ 372 if (up->restartcnt) /* no message first time */ 373 printf("%s: port error, restarting " 374 "port %d\n", 375 USBDEVNAME(sc->sc_dev), port); 376 377 if (up->restartcnt++ < USBD_RESTART_MAX) 378 goto disco; 379 else 380 printf("%s: port error, giving up " 381 "port %d\n", 382 USBDEVNAME(sc->sc_dev), port); 383 } 384 } 385 if (!(change & UPS_C_CONNECT_STATUS)) { 386 DPRINTFN(3,("uhub_explore: port=%d !C_CONNECT_" 387 "STATUS\n", port)); 388 /* No status change, just do recursive explore. */ 389 if (up->device != NULL && up->device->hub != NULL) 390 up->device->hub->explore(up->device); 391 #if 0 && defined(DIAGNOSTIC) 392 if (up->device == NULL && 393 (status & UPS_CURRENT_CONNECT_STATUS)) 394 printf("%s: connected, no device\n", 395 USBDEVNAME(sc->sc_dev)); 396 #endif 397 continue; 398 } 399 400 /* We have a connect status change, handle it. */ 401 402 DPRINTF(("uhub_explore: status change hub=%d port=%d\n", 403 dev->address, port)); 404 usbd_clear_port_feature(dev, port, UHF_C_PORT_CONNECTION); 405 /*usbd_clear_port_feature(dev, port, UHF_C_PORT_ENABLE);*/ 406 /* 407 * If there is already a device on the port the change status 408 * must mean that is has disconnected. Looking at the 409 * current connect status is not enough to figure this out 410 * since a new unit may have been connected before we handle 411 * the disconnect. 412 */ 413 disco: 414 if (up->device != NULL) { 415 /* Disconnected */ 416 DPRINTF(("uhub_explore: device addr=%d disappeared " 417 "on port %d\n", up->device->address, port)); 418 usb_disconnect_port(up, USBDEV(sc->sc_dev)); 419 usbd_clear_port_feature(dev, port, 420 UHF_C_PORT_CONNECTION); 421 } 422 if (!(status & UPS_CURRENT_CONNECT_STATUS)) { 423 /* Nothing connected, just ignore it. */ 424 DPRINTFN(3,("uhub_explore: port=%d !CURRENT_CONNECT" 425 "_STATUS\n", port)); 426 continue; 427 } 428 429 /* Connected */ 430 431 if (!(status & UPS_PORT_POWER)) 432 printf("%s: strange, connected port %d has no power\n", 433 USBDEVNAME(sc->sc_dev), port); 434 435 /* Wait for maximum device power up time. */ 436 usbd_delay_ms(dev, USB_PORT_POWERUP_DELAY); 437 438 /* Reset port, which implies enabling it. */ 439 if (usbd_reset_port(dev, port, &up->status)) { 440 printf("%s: port %d reset failed\n", 441 USBDEVNAME(sc->sc_dev), port); 442 continue; 443 } 444 /* Get port status again, it might have changed during reset */ 445 err = usbd_get_port_status(dev, port, &up->status); 446 if (err) { 447 DPRINTF(("uhub_explore: get port status failed, " 448 "error=%s\n", usbd_errstr(err))); 449 continue; 450 } 451 status = UGETW(up->status.wPortStatus); 452 change = UGETW(up->status.wPortChange); 453 if (!(status & UPS_CURRENT_CONNECT_STATUS)) { 454 /* Nothing connected, just ignore it. */ 455 #ifdef DIAGNOSTIC 456 printf("%s: port %d, device disappeared after reset\n", 457 USBDEVNAME(sc->sc_dev), port); 458 #endif 459 continue; 460 } 461 462 if (UHUB_IS_HIGH_SPEED(sc) && !(status & UPS_HIGH_SPEED)) { 463 printf("%s: port %d, transaction translation not " 464 "implemented, low/full speed device ignored\n", 465 USBDEVNAME(sc->sc_dev), port); 466 continue; 467 } 468 469 /* Figure out device speed */ 470 if (status & UPS_HIGH_SPEED) 471 speed = USB_SPEED_HIGH; 472 else if (status & UPS_LOW_SPEED) 473 speed = USB_SPEED_LOW; 474 else 475 speed = USB_SPEED_FULL; 476 /* Get device info and set its address. */ 477 err = usbd_new_device(USBDEV(sc->sc_dev), dev->bus, 478 dev->depth + 1, speed, port, up); 479 /* XXX retry a few times? */ 480 if (err) { 481 DPRINTFN(-1,("uhub_explore: usb_new_device failed, " 482 "error=%s\n", usbd_errstr(err))); 483 /* Avoid addressing problems by disabling. */ 484 /* usbd_reset_port(dev, port, &up->status); */ 485 486 /* 487 * The unit refused to accept a new address, or had 488 * some other serious problem. Since we cannot leave 489 * at 0 we have to disable the port instead. 490 */ 491 printf("%s: device problem, disabling port %d\n", 492 USBDEVNAME(sc->sc_dev), port); 493 usbd_clear_port_feature(dev, port, UHF_PORT_ENABLE); 494 } else { 495 /* The port set up succeeded, reset error count. */ 496 up->restartcnt = 0; 497 498 if (up->device->hub) 499 up->device->hub->explore(up->device); 500 } 501 } 502 return (USBD_NORMAL_COMPLETION); 503 } 504 505 #if defined(__NetBSD__) || defined(__OpenBSD__) 506 int 507 uhub_activate(device_ptr_t self, enum devact act) 508 { 509 struct uhub_softc *sc = (struct uhub_softc *)self; 510 struct usbd_hub *hub = sc->sc_hub->hub; 511 usbd_device_handle dev; 512 int nports, port, i; 513 514 switch (act) { 515 case DVACT_ACTIVATE: 516 return (EOPNOTSUPP); 517 518 case DVACT_DEACTIVATE: 519 if (hub == NULL) /* malfunctioning hub */ 520 break; 521 nports = hub->hubdesc.bNbrPorts; 522 for(port = 0; port < nports; port++) { 523 dev = hub->ports[port].device; 524 if (dev != NULL && dev->subdevs != NULL) { 525 for (i = 0; dev->subdevs[i] != NULL; i++) 526 config_deactivate(dev->subdevs[i]); 527 } 528 } 529 break; 530 } 531 return (0); 532 } 533 #endif 534 535 /* 536 * Called from process context when the hub is gone. 537 * Detach all devices on active ports. 538 */ 539 USB_DETACH(uhub) 540 { 541 USB_DETACH_START(uhub, sc); 542 struct usbd_hub *hub = sc->sc_hub->hub; 543 struct usbd_port *rup; 544 int port, nports; 545 546 #if defined(__NetBSD__) || defined(__OpenBSD__) 547 DPRINTF(("uhub_detach: sc=%p flags=%d\n", sc, flags)); 548 #elif defined(__FreeBSD__) 549 DPRINTF(("uhub_detach: sc=%port\n", sc)); 550 #endif 551 552 if (hub == NULL) /* Must be partially working */ 553 return (0); 554 555 usbd_abort_pipe(sc->sc_ipipe); 556 usbd_close_pipe(sc->sc_ipipe); 557 558 nports = hub->hubdesc.bNbrPorts; 559 for(port = 0; port < nports; port++) { 560 rup = &hub->ports[port]; 561 if (rup->device) 562 usb_disconnect_port(rup, self); 563 } 564 565 usbd_add_drv_event(USB_EVENT_DRIVER_DETACH, sc->sc_hub, 566 USBDEV(sc->sc_dev)); 567 568 free(hub, M_USBDEV); 569 sc->sc_hub->hub = NULL; 570 571 return (0); 572 } 573 574 #if defined(__FreeBSD__) 575 /* Called when a device has been detached from it */ 576 Static void 577 uhub_child_detached(device_t self, device_t child) 578 { 579 struct uhub_softc *sc = device_get_softc(self); 580 usbd_device_handle devhub = sc->sc_hub; 581 usbd_device_handle dev; 582 int nports; 583 int port; 584 int i; 585 586 if (!devhub->hub) 587 /* should never happen; children are only created after init */ 588 panic("hub not fully initialised, but child deleted?"); 589 590 nports = devhub->hub->hubdesc.bNbrPorts; 591 for (port = 0; port < nports; port++) { 592 dev = devhub->hub->ports[port].device; 593 if (dev && dev->subdevs) { 594 for (i = 0; dev->subdevs[i]; i++) { 595 if (dev->subdevs[i] == child) { 596 dev->subdevs[i] = NULL; 597 return; 598 } 599 } 600 } 601 } 602 } 603 #endif 604 605 606 /* 607 * Hub interrupt. 608 * This an indication that some port has changed status. 609 * Notify the bus event handler thread that we need 610 * to be explored again. 611 */ 612 void 613 uhub_intr(usbd_xfer_handle xfer, usbd_private_handle addr, usbd_status status) 614 { 615 struct uhub_softc *sc = addr; 616 617 DPRINTFN(5,("uhub_intr: sc=%p\n", sc)); 618 if (status == USBD_STALLED) 619 usbd_clear_endpoint_stall_async(sc->sc_ipipe); 620 else if (status == USBD_NORMAL_COMPLETION) 621 usb_needs_explore(sc->sc_hub); 622 } 623 624 #if defined(__FreeBSD__) 625 DRIVER_MODULE(uhub, usb, uhubroot_driver, uhubroot_devclass, 0, 0); 626 DRIVER_MODULE(uhub, uhub, uhub_driver, uhub_devclass, usbd_driver_load, 0); 627 #endif 628
Indexes created Wed Sep 24 22:09:59 GMT 2025