1 /* $OpenBSD: uhub.c,v 1.26 2004/07/11 05:32:38 deraadt Exp $ */ 2 /* $NetBSD: uhub.c,v 1.64 2003/02/08 03:32:51 ichiro Exp $ */ 3 /* $FreeBSD: src/sys/dev/usb/uhub.c,v 1.18 1999/11/17 22:33:43 n_hibma Exp $ */ 4 5 /* 6 * Copyright (c) 1998 The NetBSD Foundation, Inc. 7 * All rights reserved. 8 * 9 * This code is derived from software contributed to The NetBSD Foundation 10 * by Lennart Augustsson (lennart@augustsson.net) at 11 * Carlstedt Research & Technology. 12 * 13 * Redistribution and use in source and binary forms, with or without 14 * modification, are permitted provided that the following conditions 15 * are met: 16 * 1. Redistributions of source code must retain the above copyright 17 * notice, this list of conditions and the following disclaimer. 18 * 2. Redistributions in binary form must reproduce the above copyright 19 * notice, this list of conditions and the following disclaimer in the 20 * documentation and/or other materials provided with the distribution. 21 * 3. All advertising materials mentioning features or use of this software 22 * must display the following acknowledgement: 23 * This product includes software developed by the NetBSD 24 * Foundation, Inc. and its contributors. 25 * 4. Neither the name of The NetBSD Foundation nor the names of its 26 * contributors may be used to endorse or promote products derived 27 * from this software without specific prior written permission. 28 * 29 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 30 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 31 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 32 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 33 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 34 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 35 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 36 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 37 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 38 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 39 * POSSIBILITY OF SUCH DAMAGE. 40 */ 41 42 /* 43 * USB spec: http://www.usb.org/developers/docs/usbspec.zip 44 */ 45 46 #include <sys/param.h> 47 #include <sys/systm.h> 48 #include <sys/kernel.h> 49 #include <sys/malloc.h> 50 #if defined(__NetBSD__) || defined(__OpenBSD__) 51 #include <sys/device.h> 52 #include <sys/proc.h> 53 #elif defined(__FreeBSD__) 54 #include <sys/module.h> 55 #include <sys/bus.h> 56 #include "bus_if.h" 57 #endif 58 59 #include <machine/bus.h> 60 61 #include <dev/usb/usb.h> 62 #include <dev/usb/usbdi.h> 63 #include <dev/usb/usbdi_util.h> 64 #include <dev/usb/usbdivar.h> 65 66 #define UHUB_INTR_INTERVAL 255 /* ms */ 67 68 #ifdef UHUB_DEBUG 69 #define DPRINTF(x) do { if (uhubdebug) logprintf x; } while (0) 70 #define DPRINTFN(n,x) do { if (uhubdebug>(n)) logprintf x; } while (0) 71 int uhubdebug = 0; 72 #else 73 #define DPRINTF(x) 74 #define DPRINTFN(n,x) 75 #endif 76 77 struct uhub_softc { 78 USBBASEDEVICE sc_dev; /* base device */ 79 usbd_device_handle sc_hub; /* USB device */ 80 usbd_pipe_handle sc_ipipe; /* interrupt pipe */ 81 u_int8_t sc_status[1]; /* XXX more ports */ 82 u_char sc_running; 83 }; 84 85 Static usbd_status uhub_explore(usbd_device_handle hub); 86 Static void uhub_intr(usbd_xfer_handle, usbd_private_handle,usbd_status); 87 88 #if defined(__FreeBSD__) 89 Static bus_child_detached_t uhub_child_detached; 90 #endif 91 92 93 /* 94 * We need two attachment points: 95 * hub to usb and hub to hub 96 * Every other driver only connects to hubs 97 */ 98 99 #if defined(__NetBSD__) || defined(__OpenBSD__) 100 USB_DECLARE_DRIVER(uhub); 101 102 #if defined(__NetBSD__) 103 /* Create the driver instance for the hub connected to hub case */ 104 CFATTACH_DECL(uhub_uhub, sizeof(struct uhub_softc), 105 uhub_match, uhub_attach, uhub_detach, uhub_activate); 106 #else 107 struct cfattach uhub_uhub_ca = { 108 sizeof(struct uhub_softc), uhub_match, uhub_attach, 109 uhub_detach, uhub_activate 110 }; 111 #endif 112 #elif defined(__FreeBSD__) 113 USB_DECLARE_DRIVER_INIT(uhub, 114 DEVMETHOD(bus_child_detached, uhub_child_detached)); 115 116 /* Create the driver instance for the hub connected to usb case. */ 117 devclass_t uhubroot_devclass; 118 119 Static device_method_t uhubroot_methods[] = { 120 DEVMETHOD(device_probe, uhub_match), 121 DEVMETHOD(device_attach, uhub_attach), 122 123 /* detach is not allowed for a root hub */ 124 {0,0} 125 }; 126 127 Static driver_t uhubroot_driver = { 128 "uhub", 129 uhubroot_methods, 130 sizeof(struct uhub_softc) 131 }; 132 #endif 133 134 USB_MATCH(uhub) 135 { 136 USB_MATCH_START(uhub, uaa); 137 usb_device_descriptor_t *dd = usbd_get_device_descriptor(uaa->device); 138 139 DPRINTFN(5,("uhub_match, dd=%p\n", dd)); 140 /* 141 * The subclass for hubs seems to be 0 for some and 1 for others, 142 * so we just ignore the subclass. 143 */ 144 if (uaa->iface == NULL && dd->bDeviceClass == UDCLASS_HUB) 145 return (UMATCH_DEVCLASS_DEVSUBCLASS); 146 return (UMATCH_NONE); 147 } 148 149 USB_ATTACH(uhub) 150 { 151 USB_ATTACH_START(uhub, sc, uaa); 152 usbd_device_handle dev = uaa->device; 153 char devinfo[1024]; 154 usbd_status err; 155 struct usbd_hub *hub; 156 usb_device_request_t req; 157 usb_hub_descriptor_t hubdesc; 158 int p, port, nports, nremov, pwrdly; 159 usbd_interface_handle iface; 160 usb_endpoint_descriptor_t *ed; 161 162 DPRINTFN(1,("uhub_attach\n")); 163 sc->sc_hub = dev; 164 usbd_devinfo(dev, 1, devinfo, sizeof devinfo); 165 USB_ATTACH_SETUP; 166 printf("%s: %s\n", USBDEVNAME(sc->sc_dev), devinfo); 167 168 err = usbd_set_config_index(dev, 0, 1); 169 if (err) { 170 DPRINTF(("%s: configuration failed, error=%s\n", 171 USBDEVNAME(sc->sc_dev), usbd_errstr(err))); 172 USB_ATTACH_ERROR_RETURN; 173 } 174 175 if (dev->depth > USB_HUB_MAX_DEPTH) { 176 printf("%s: hub depth (%d) exceeded, hub ignored\n", 177 USBDEVNAME(sc->sc_dev), USB_HUB_MAX_DEPTH); 178 USB_ATTACH_ERROR_RETURN; 179 } 180 181 /* Get hub descriptor. */ 182 req.bmRequestType = UT_READ_CLASS_DEVICE; 183 req.bRequest = UR_GET_DESCRIPTOR; 184 USETW2(req.wValue, UDESC_HUB, 0); 185 USETW(req.wIndex, 0); 186 USETW(req.wLength, USB_HUB_DESCRIPTOR_SIZE); 187 DPRINTFN(1,("usb_init_hub: getting hub descriptor\n")); 188 err = usbd_do_request(dev, &req, &hubdesc); 189 nports = hubdesc.bNbrPorts; 190 if (!err && nports > 7) { 191 USETW(req.wLength, USB_HUB_DESCRIPTOR_SIZE + (nports+1) / 8); 192 err = usbd_do_request(dev, &req, &hubdesc); 193 } 194 if (err) { 195 DPRINTF(("%s: getting hub descriptor failed, error=%s\n", 196 USBDEVNAME(sc->sc_dev), usbd_errstr(err))); 197 USB_ATTACH_ERROR_RETURN; 198 } 199 200 for (nremov = 0, port = 1; port <= nports; port++) 201 if (!UHD_NOT_REMOV(&hubdesc, port)) 202 nremov++; 203 printf("%s: %d port%s with %d removable, %s powered\n", 204 USBDEVNAME(sc->sc_dev), nports, nports != 1 ? "s" : "", 205 nremov, dev->self_powered ? "self" : "bus"); 206 207 hub = malloc(sizeof(*hub) + (nports-1) * sizeof(struct usbd_port), 208 M_USBDEV, M_NOWAIT); 209 if (hub == NULL) 210 USB_ATTACH_ERROR_RETURN; 211 dev->hub = hub; 212 dev->hub->hubsoftc = sc; 213 hub->explore = uhub_explore; 214 hub->hubdesc = hubdesc; 215 216 DPRINTFN(1,("usbhub_init_hub: selfpowered=%d, parent=%p, " 217 "parent->selfpowered=%d\n", 218 dev->self_powered, dev->powersrc->parent, 219 dev->powersrc->parent ? 220 dev->powersrc->parent->self_powered : 0)); 221 222 if (!dev->self_powered && dev->powersrc->parent != NULL && 223 !dev->powersrc->parent->self_powered) { 224 printf("%s: bus powered hub connected to bus powered hub, " 225 "ignored\n", USBDEVNAME(sc->sc_dev)); 226 goto bad; 227 } 228 229 /* Set up interrupt pipe. */ 230 err = usbd_device2interface_handle(dev, 0, &iface); 231 if (err) { 232 printf("%s: no interface handle\n", USBDEVNAME(sc->sc_dev)); 233 goto bad; 234 } 235 ed = usbd_interface2endpoint_descriptor(iface, 0); 236 if (ed == NULL) { 237 printf("%s: no endpoint descriptor\n", USBDEVNAME(sc->sc_dev)); 238 goto bad; 239 } 240 if ((ed->bmAttributes & UE_XFERTYPE) != UE_INTERRUPT) { 241 printf("%s: bad interrupt endpoint\n", USBDEVNAME(sc->sc_dev)); 242 goto bad; 243 } 244 245 err = usbd_open_pipe_intr(iface, ed->bEndpointAddress, 246 USBD_SHORT_XFER_OK, &sc->sc_ipipe, sc, sc->sc_status, 247 sizeof(sc->sc_status), uhub_intr, UHUB_INTR_INTERVAL); 248 if (err) { 249 printf("%s: cannot open interrupt pipe\n", 250 USBDEVNAME(sc->sc_dev)); 251 goto bad; 252 } 253 254 /* Wait with power off for a while. */ 255 usbd_delay_ms(dev, USB_POWER_DOWN_TIME); 256 257 usbd_add_drv_event(USB_EVENT_DRIVER_ATTACH, dev, USBDEV(sc->sc_dev)); 258 259 /* 260 * To have the best chance of success we do things in the exact same 261 * order as Windoze98. This should not be necessary, but some 262 * devices do not follow the USB specs to the letter. 263 * 264 * These are the events on the bus when a hub is attached: 265 * Get device and config descriptors (see attach code) 266 * Get hub descriptor (see above) 267 * For all ports 268 * turn on power 269 * wait for power to become stable 270 * (all below happens in explore code) 271 * For all ports 272 * clear C_PORT_CONNECTION 273 * For all ports 274 * get port status 275 * if device connected 276 * wait 100 ms 277 * turn on reset 278 * wait 279 * clear C_PORT_RESET 280 * get port status 281 * proceed with device attachment 282 */ 283 284 /* Set up data structures */ 285 for (p = 0; p < nports; p++) { 286 struct usbd_port *up = &hub->ports[p]; 287 up->device = 0; 288 up->parent = dev; 289 up->portno = p+1; 290 if (dev->self_powered) 291 /* Self powered hub, give ports maximum current. */ 292 up->power = USB_MAX_POWER; 293 else 294 up->power = USB_MIN_POWER; 295 up->restartcnt = 0; 296 } 297 298 /* XXX should check for none, individual, or ganged power? */ 299 300 pwrdly = dev->hub->hubdesc.bPwrOn2PwrGood * UHD_PWRON_FACTOR 301 + USB_EXTRA_POWER_UP_TIME; 302 for (port = 1; port <= nports; port++) { 303 /* Turn the power on. */ 304 err = usbd_set_port_feature(dev, port, UHF_PORT_POWER); 305 if (err) 306 printf("%s: port %d power on failed, %s\n", 307 USBDEVNAME(sc->sc_dev), port, 308 usbd_errstr(err)); 309 DPRINTF(("usb_init_port: turn on port %d power\n", port)); 310 /* Wait for stable power. */ 311 usbd_delay_ms(dev, pwrdly); 312 } 313 314 /* The usual exploration will finish the setup. */ 315 316 sc->sc_running = 1; 317 318 USB_ATTACH_SUCCESS_RETURN; 319 320 bad: 321 free(hub, M_USBDEV); 322 dev->hub = 0; 323 USB_ATTACH_ERROR_RETURN; 324 } 325 326 usbd_status 327 uhub_explore(usbd_device_handle dev) 328 { 329 usb_hub_descriptor_t *hd = &dev->hub->hubdesc; 330 struct uhub_softc *sc = dev->hub->hubsoftc; 331 struct usbd_port *up; 332 usbd_status err; 333 int speed; 334 int port; 335 int change, status; 336 337 DPRINTFN(10, ("uhub_explore dev=%p addr=%d\n", dev, dev->address)); 338 339 if (!sc->sc_running) 340 return (USBD_NOT_STARTED); 341 342 /* Ignore hubs that are too deep. */ 343 if (dev->depth > USB_HUB_MAX_DEPTH) 344 return (USBD_TOO_DEEP); 345 346 for(port = 1; port <= hd->bNbrPorts; port++) { 347 up = &dev->hub->ports[port-1]; 348 err = usbd_get_port_status(dev, port, &up->status); 349 if (err) { 350 DPRINTF(("uhub_explore: get port status failed, " 351 "error=%s\n", usbd_errstr(err))); 352 continue; 353 } 354 status = UGETW(up->status.wPortStatus); 355 change = UGETW(up->status.wPortChange); 356 DPRINTFN(3,("uhub_explore: %s port %d status 0x%04x 0x%04x\n", 357 USBDEVNAME(sc->sc_dev), port, status, change)); 358 if (change & UPS_C_PORT_ENABLED) { 359 DPRINTF(("uhub_explore: C_PORT_ENABLED\n")); 360 usbd_clear_port_feature(dev, port, UHF_C_PORT_ENABLE); 361 if (change & UPS_C_CONNECT_STATUS) { 362 /* Ignore the port error if the device 363 vanished. */ 364 } else if (status & UPS_PORT_ENABLED) { 365 printf("%s: illegal enable change, port %d\n", 366 USBDEVNAME(sc->sc_dev), port); 367 } else { 368 /* Port error condition. */ 369 if (up->restartcnt) /* no message first time */ 370 printf("%s: port error, restarting " 371 "port %d\n", 372 USBDEVNAME(sc->sc_dev), port); 373 374 if (up->restartcnt++ < USBD_RESTART_MAX) 375 goto disco; 376 else 377 printf("%s: port error, giving up " 378 "port %d\n", 379 USBDEVNAME(sc->sc_dev), port); 380 } 381 } 382 if (!(change & UPS_C_CONNECT_STATUS)) { 383 DPRINTFN(3,("uhub_explore: port=%d !C_CONNECT_" 384 "STATUS\n", port)); 385 /* No status change, just do recursive explore. */ 386 if (up->device != NULL && up->device->hub != NULL) 387 up->device->hub->explore(up->device); 388 #if 0 && defined(DIAGNOSTIC) 389 if (up->device == NULL && 390 (status & UPS_CURRENT_CONNECT_STATUS)) 391 printf("%s: connected, no device\n", 392 USBDEVNAME(sc->sc_dev)); 393 #endif 394 continue; 395 } 396 397 /* We have a connect status change, handle it. */ 398 399 DPRINTF(("uhub_explore: status change hub=%d port=%d\n", 400 dev->address, port)); 401 usbd_clear_port_feature(dev, port, UHF_C_PORT_CONNECTION); 402 /*usbd_clear_port_feature(dev, port, UHF_C_PORT_ENABLE);*/ 403 /* 404 * If there is already a device on the port the change status 405 * must mean that is has disconnected. Looking at the 406 * current connect status is not enough to figure this out 407 * since a new unit may have been connected before we handle 408 * the disconnect. 409 */ 410 disco: 411 if (up->device != NULL) { 412 /* Disconnected */ 413 DPRINTF(("uhub_explore: device addr=%d disappeared " 414 "on port %d\n", up->device->address, port)); 415 usb_disconnect_port(up, USBDEV(sc->sc_dev)); 416 usbd_clear_port_feature(dev, port, 417 UHF_C_PORT_CONNECTION); 418 } 419 if (!(status & UPS_CURRENT_CONNECT_STATUS)) { 420 /* Nothing connected, just ignore it. */ 421 DPRINTFN(3,("uhub_explore: port=%d !CURRENT_CONNECT" 422 "_STATUS\n", port)); 423 continue; 424 } 425 426 /* Connected */ 427 428 if (!(status & UPS_PORT_POWER)) 429 printf("%s: strange, connected port %d has no power\n", 430 USBDEVNAME(sc->sc_dev), port); 431 432 /* Wait for maximum device power up time. */ 433 usbd_delay_ms(dev, USB_PORT_POWERUP_DELAY); 434 435 /* Reset port, which implies enabling it. */ 436 if (usbd_reset_port(dev, port, &up->status)) { 437 printf("%s: port %d reset failed\n", 438 USBDEVNAME(sc->sc_dev), port); 439 continue; 440 } 441 /* Get port status again, it might have changed during reset */ 442 err = usbd_get_port_status(dev, port, &up->status); 443 if (err) { 444 DPRINTF(("uhub_explore: get port status failed, " 445 "error=%s\n", usbd_errstr(err))); 446 continue; 447 } 448 status = UGETW(up->status.wPortStatus); 449 change = UGETW(up->status.wPortChange); 450 if (!(status & UPS_CURRENT_CONNECT_STATUS)) { 451 /* Nothing connected, just ignore it. */ 452 #ifdef UHUB_DEBUG 453 printf("%s: port %d, device disappeared after reset\n", 454 USBDEVNAME(sc->sc_dev), port); 455 #endif 456 continue; 457 } 458 459 /* Figure out device speed */ 460 if (status & UPS_HIGH_SPEED) 461 speed = USB_SPEED_HIGH; 462 else if (status & UPS_LOW_SPEED) 463 speed = USB_SPEED_LOW; 464 else 465 speed = USB_SPEED_FULL; 466 /* Get device info and set its address. */ 467 err = usbd_new_device(USBDEV(sc->sc_dev), dev->bus, 468 dev->depth + 1, speed, port, up); 469 /* XXX retry a few times? */ 470 if (err) { 471 DPRINTFN(-1,("uhub_explore: usb_new_device failed, " 472 "error=%s\n", usbd_errstr(err))); 473 /* Avoid addressing problems by disabling. */ 474 /* usbd_reset_port(dev, port, &up->status); */ 475 476 /* 477 * The unit refused to accept a new address, or had 478 * some other serious problem. Since we cannot leave 479 * at 0 we have to disable the port instead. 480 */ 481 printf("%s: device problem, disabling port %d\n", 482 USBDEVNAME(sc->sc_dev), port); 483 usbd_clear_port_feature(dev, port, UHF_PORT_ENABLE); 484 } else { 485 /* The port set up succeeded, reset error count. */ 486 up->restartcnt = 0; 487 488 if (up->device->hub) 489 up->device->hub->explore(up->device); 490 } 491 } 492 return (USBD_NORMAL_COMPLETION); 493 } 494 495 #if defined(__NetBSD__) || defined(__OpenBSD__) 496 int 497 uhub_activate(device_ptr_t self, enum devact act) 498 { 499 struct uhub_softc *sc = (struct uhub_softc *)self; 500 struct usbd_hub *hub = sc->sc_hub->hub; 501 usbd_device_handle dev; 502 int nports, port, i; 503 504 switch (act) { 505 case DVACT_ACTIVATE: 506 return (EOPNOTSUPP); 507 508 case DVACT_DEACTIVATE: 509 if (hub == NULL) /* malfunctioning hub */ 510 break; 511 nports = hub->hubdesc.bNbrPorts; 512 for(port = 0; port < nports; port++) { 513 dev = hub->ports[port].device; 514 if (dev != NULL && dev->subdevs != NULL) { 515 for (i = 0; dev->subdevs[i] != NULL; i++) 516 config_deactivate(dev->subdevs[i]); 517 } 518 } 519 break; 520 } 521 return (0); 522 } 523 #endif 524 525 /* 526 * Called from process context when the hub is gone. 527 * Detach all devices on active ports. 528 */ 529 USB_DETACH(uhub) 530 { 531 USB_DETACH_START(uhub, sc); 532 struct usbd_hub *hub = sc->sc_hub->hub; 533 struct usbd_port *rup; 534 int port, nports; 535 536 #if defined(__NetBSD__) || defined(__OpenBSD__) 537 DPRINTF(("uhub_detach: sc=%p flags=%d\n", sc, flags)); 538 #elif defined(__FreeBSD__) 539 DPRINTF(("uhub_detach: sc=%port\n", sc)); 540 #endif 541 542 if (hub == NULL) /* Must be partially working */ 543 return (0); 544 545 usbd_abort_pipe(sc->sc_ipipe); 546 usbd_close_pipe(sc->sc_ipipe); 547 548 nports = hub->hubdesc.bNbrPorts; 549 for(port = 0; port < nports; port++) { 550 rup = &hub->ports[port]; 551 if (rup->device) 552 usb_disconnect_port(rup, self); 553 } 554 555 usbd_add_drv_event(USB_EVENT_DRIVER_DETACH, sc->sc_hub, 556 USBDEV(sc->sc_dev)); 557 558 free(hub, M_USBDEV); 559 sc->sc_hub->hub = NULL; 560 561 return (0); 562 } 563 564 #if defined(__FreeBSD__) 565 /* Called when a device has been detached from it */ 566 Static void 567 uhub_child_detached(device_t self, device_t child) 568 { 569 struct uhub_softc *sc = device_get_softc(self); 570 usbd_device_handle devhub = sc->sc_hub; 571 usbd_device_handle dev; 572 int nports; 573 int port; 574 int i; 575 576 if (!devhub->hub) 577 /* should never happen; children are only created after init */ 578 panic("hub not fully initialised, but child deleted?"); 579 580 nports = devhub->hub->hubdesc.bNbrPorts; 581 for (port = 0; port < nports; port++) { 582 dev = devhub->hub->ports[port].device; 583 if (dev && dev->subdevs) { 584 for (i = 0; dev->subdevs[i]; i++) { 585 if (dev->subdevs[i] == child) { 586 dev->subdevs[i] = NULL; 587 return; 588 } 589 } 590 } 591 } 592 } 593 #endif 594 595 596 /* 597 * Hub interrupt. 598 * This an indication that some port has changed status. 599 * Notify the bus event handler thread that we need 600 * to be explored again. 601 */ 602 void 603 uhub_intr(usbd_xfer_handle xfer, usbd_private_handle addr, usbd_status status) 604 { 605 struct uhub_softc *sc = addr; 606 607 DPRINTFN(5,("uhub_intr: sc=%p\n", sc)); 608 if (status == USBD_STALLED) 609 usbd_clear_endpoint_stall_async(sc->sc_ipipe); 610 else if (status == USBD_NORMAL_COMPLETION) 611 usb_needs_explore(sc->sc_hub); 612 } 613 614 #if defined(__FreeBSD__) 615 DRIVER_MODULE(uhub, usb, uhubroot_driver, uhubroot_devclass, 0, 0); 616 DRIVER_MODULE(uhub, uhub, uhub_driver, uhub_devclass, usbd_driver_load, 0); 617 #endif 618