1 /* $NetBSD: uhub.c,v 1.78 2006/04/14 16:26:46 christos 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, 2004 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@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 1.78 2006/04/14 16:26:46 christos 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 *devinfop; 152 usbd_status err; 153 struct usbd_hub *hub = NULL; 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 struct usbd_tt *tts = NULL; 160 161 DPRINTFN(1,("uhub_attach\n")); 162 sc->sc_hub = dev; 163 164 devinfop = usbd_devinfo_alloc(dev, 1); 165 USB_ATTACH_SETUP; 166 printf("%s: %s\n", USBDEVNAME(sc->sc_dev), devinfop); 167 usbd_devinfo_free(devinfop); 168 169 if (dev->depth > 0 && UHUB_IS_HIGH_SPEED(sc)) { 170 printf("%s: %s transaction translator%s\n", 171 USBDEVNAME(sc->sc_dev), 172 UHUB_IS_SINGLE_TT(sc) ? "single" : "multiple", 173 UHUB_IS_SINGLE_TT(sc) ? "" : "s"); 174 } 175 176 err = usbd_set_config_index(dev, 0, 1); 177 if (err) { 178 DPRINTF(("%s: configuration failed, error=%s\n", 179 USBDEVNAME(sc->sc_dev), usbd_errstr(err))); 180 USB_ATTACH_ERROR_RETURN; 181 } 182 183 if (dev->depth > USB_HUB_MAX_DEPTH) { 184 printf("%s: hub depth (%d) exceeded, hub ignored\n", 185 USBDEVNAME(sc->sc_dev), USB_HUB_MAX_DEPTH); 186 USB_ATTACH_ERROR_RETURN; 187 } 188 189 /* Get hub descriptor. */ 190 req.bmRequestType = UT_READ_CLASS_DEVICE; 191 req.bRequest = UR_GET_DESCRIPTOR; 192 USETW2(req.wValue, UDESC_HUB, 0); 193 USETW(req.wIndex, 0); 194 USETW(req.wLength, USB_HUB_DESCRIPTOR_SIZE); 195 DPRINTFN(1,("usb_init_hub: getting hub descriptor\n")); 196 err = usbd_do_request(dev, &req, &hubdesc); 197 nports = hubdesc.bNbrPorts; 198 if (!err && nports > 7) { 199 USETW(req.wLength, USB_HUB_DESCRIPTOR_SIZE + (nports+1) / 8); 200 err = usbd_do_request(dev, &req, &hubdesc); 201 } 202 if (err) { 203 DPRINTF(("%s: getting hub descriptor failed, error=%s\n", 204 USBDEVNAME(sc->sc_dev), usbd_errstr(err))); 205 USB_ATTACH_ERROR_RETURN; 206 } 207 208 for (nremov = 0, port = 1; port <= nports; port++) 209 if (!UHD_NOT_REMOV(&hubdesc, port)) 210 nremov++; 211 printf("%s: %d port%s with %d removable, %s powered\n", 212 USBDEVNAME(sc->sc_dev), nports, nports != 1 ? "s" : "", 213 nremov, dev->self_powered ? "self" : "bus"); 214 215 if (nports == 0) { 216 printf("%s: no ports, hub ignored\n", USBDEVNAME(sc->sc_dev)); 217 goto bad; 218 } 219 220 hub = malloc(sizeof(*hub) + (nports-1) * sizeof(struct usbd_port), 221 M_USBDEV, M_NOWAIT); 222 if (hub == NULL) 223 USB_ATTACH_ERROR_RETURN; 224 dev->hub = hub; 225 dev->hub->hubsoftc = sc; 226 hub->explore = uhub_explore; 227 hub->hubdesc = hubdesc; 228 229 DPRINTFN(1,("usbhub_init_hub: selfpowered=%d, parent=%p, " 230 "parent->selfpowered=%d\n", 231 dev->self_powered, dev->powersrc->parent, 232 dev->powersrc->parent ? 233 dev->powersrc->parent->self_powered : 0)); 234 235 if (!dev->self_powered && dev->powersrc->parent != NULL && 236 !dev->powersrc->parent->self_powered) { 237 printf("%s: bus powered hub connected to bus powered hub, " 238 "ignored\n", USBDEVNAME(sc->sc_dev)); 239 goto bad; 240 } 241 242 /* Set up interrupt pipe. */ 243 err = usbd_device2interface_handle(dev, 0, &iface); 244 if (err) { 245 printf("%s: no interface handle\n", USBDEVNAME(sc->sc_dev)); 246 goto bad; 247 } 248 ed = usbd_interface2endpoint_descriptor(iface, 0); 249 if (ed == NULL) { 250 printf("%s: no endpoint descriptor\n", USBDEVNAME(sc->sc_dev)); 251 goto bad; 252 } 253 if ((ed->bmAttributes & UE_XFERTYPE) != UE_INTERRUPT) { 254 printf("%s: bad interrupt endpoint\n", USBDEVNAME(sc->sc_dev)); 255 goto bad; 256 } 257 258 err = usbd_open_pipe_intr(iface, ed->bEndpointAddress, 259 USBD_SHORT_XFER_OK, &sc->sc_ipipe, sc, sc->sc_status, 260 sizeof(sc->sc_status), uhub_intr, UHUB_INTR_INTERVAL); 261 if (err) { 262 printf("%s: cannot open interrupt pipe\n", 263 USBDEVNAME(sc->sc_dev)); 264 goto bad; 265 } 266 267 /* Wait with power off for a while. */ 268 usbd_delay_ms(dev, USB_POWER_DOWN_TIME); 269 270 usbd_add_drv_event(USB_EVENT_DRIVER_ATTACH, dev, USBDEV(sc->sc_dev)); 271 272 /* 273 * To have the best chance of success we do things in the exact same 274 * order as Windoze98. This should not be necessary, but some 275 * devices do not follow the USB specs to the letter. 276 * 277 * These are the events on the bus when a hub is attached: 278 * Get device and config descriptors (see attach code) 279 * Get hub descriptor (see above) 280 * For all ports 281 * turn on power 282 * wait for power to become stable 283 * (all below happens in explore code) 284 * For all ports 285 * clear C_PORT_CONNECTION 286 * For all ports 287 * get port status 288 * if device connected 289 * wait 100 ms 290 * turn on reset 291 * wait 292 * clear C_PORT_RESET 293 * get port status 294 * proceed with device attachment 295 */ 296 297 if (UHUB_IS_HIGH_SPEED(sc) && nports > 0) { 298 tts = malloc((UHUB_IS_SINGLE_TT(sc) ? 1 : nports) * 299 sizeof (struct usbd_tt), M_USBDEV, M_NOWAIT); 300 if (!tts) 301 goto bad; 302 } 303 /* Set up data structures */ 304 for (p = 0; p < nports; p++) { 305 struct usbd_port *up = &hub->ports[p]; 306 up->device = NULL; 307 up->parent = dev; 308 up->portno = p+1; 309 if (dev->self_powered) 310 /* Self powered hub, give ports maximum current. */ 311 up->power = USB_MAX_POWER; 312 else 313 up->power = USB_MIN_POWER; 314 up->restartcnt = 0; 315 up->reattach = 0; 316 if (UHUB_IS_HIGH_SPEED(sc)) { 317 up->tt = &tts[UHUB_IS_SINGLE_TT(sc) ? 0 : p]; 318 up->tt->hub = hub; 319 } else { 320 up->tt = NULL; 321 } 322 } 323 324 /* XXX should check for none, individual, or ganged power? */ 325 326 pwrdly = dev->hub->hubdesc.bPwrOn2PwrGood * UHD_PWRON_FACTOR 327 + USB_EXTRA_POWER_UP_TIME; 328 for (port = 1; port <= nports; port++) { 329 /* Turn the power on. */ 330 err = usbd_set_port_feature(dev, port, UHF_PORT_POWER); 331 if (err) 332 printf("%s: port %d power on failed, %s\n", 333 USBDEVNAME(sc->sc_dev), port, 334 usbd_errstr(err)); 335 DPRINTF(("usb_init_port: turn on port %d power\n", port)); 336 /* Wait for stable power. */ 337 usbd_delay_ms(dev, pwrdly); 338 } 339 340 /* The usual exploration will finish the setup. */ 341 342 sc->sc_running = 1; 343 344 USB_ATTACH_SUCCESS_RETURN; 345 346 bad: 347 if (hub) 348 free(hub, M_USBDEV); 349 dev->hub = NULL; 350 USB_ATTACH_ERROR_RETURN; 351 } 352 353 usbd_status 354 uhub_explore(usbd_device_handle dev) 355 { 356 usb_hub_descriptor_t *hd = &dev->hub->hubdesc; 357 struct uhub_softc *sc = dev->hub->hubsoftc; 358 struct usbd_port *up; 359 usbd_status err; 360 int speed; 361 int port; 362 int change, status, reconnect; 363 364 DPRINTFN(10, ("uhub_explore dev=%p addr=%d\n", dev, dev->address)); 365 366 if (!sc->sc_running) 367 return (USBD_NOT_STARTED); 368 369 /* Ignore hubs that are too deep. */ 370 if (dev->depth > USB_HUB_MAX_DEPTH) 371 return (USBD_TOO_DEEP); 372 373 for(port = 1; port <= hd->bNbrPorts; port++) { 374 up = &dev->hub->ports[port-1]; 375 err = usbd_get_port_status(dev, port, &up->status); 376 if (err) { 377 DPRINTF(("uhub_explore: get port status failed, " 378 "error=%s\n", usbd_errstr(err))); 379 continue; 380 } 381 status = UGETW(up->status.wPortStatus); 382 change = UGETW(up->status.wPortChange); 383 reconnect = up->reattach; 384 up->reattach = 0; 385 DPRINTFN(3,("uhub_explore: %s port %d status 0x%04x 0x%04x\n", 386 USBDEVNAME(sc->sc_dev), port, status, change)); 387 if (change & UPS_C_PORT_ENABLED) { 388 DPRINTF(("uhub_explore: C_PORT_ENABLED\n")); 389 usbd_clear_port_feature(dev, port, UHF_C_PORT_ENABLE); 390 if (change & UPS_C_CONNECT_STATUS) { 391 /* Ignore the port error if the device 392 vanished. */ 393 } else if (status & UPS_PORT_ENABLED) { 394 printf("%s: illegal enable change, port %d\n", 395 USBDEVNAME(sc->sc_dev), port); 396 } else { 397 /* Port error condition. */ 398 if (up->restartcnt) /* no message first time */ 399 printf("%s: port error, restarting " 400 "port %d\n", 401 USBDEVNAME(sc->sc_dev), port); 402 403 if (up->restartcnt++ < USBD_RESTART_MAX) 404 goto disco; 405 else 406 printf("%s: port error, giving up " 407 "port %d\n", 408 USBDEVNAME(sc->sc_dev), port); 409 } 410 } 411 if (!reconnect && !(change & UPS_C_CONNECT_STATUS)) { 412 DPRINTFN(3,("uhub_explore: port=%d !C_CONNECT_" 413 "STATUS\n", port)); 414 /* No status change, just do recursive explore. */ 415 if (up->device != NULL && up->device->hub != NULL) 416 up->device->hub->explore(up->device); 417 #if 0 && defined(DIAGNOSTIC) 418 if (up->device == NULL && 419 (status & UPS_CURRENT_CONNECT_STATUS)) 420 printf("%s: connected, no device\n", 421 USBDEVNAME(sc->sc_dev)); 422 #endif 423 continue; 424 } 425 426 /* We have a connect status change, handle it. */ 427 428 DPRINTF(("uhub_explore: status change hub=%d port=%d\n", 429 dev->address, port)); 430 usbd_clear_port_feature(dev, port, UHF_C_PORT_CONNECTION); 431 /*usbd_clear_port_feature(dev, port, UHF_C_PORT_ENABLE);*/ 432 /* 433 * If there is already a device on the port the change status 434 * must mean that is has disconnected. Looking at the 435 * current connect status is not enough to figure this out 436 * since a new unit may have been connected before we handle 437 * the disconnect. 438 */ 439 disco: 440 if (up->device != NULL) { 441 /* Disconnected */ 442 DPRINTF(("uhub_explore: device addr=%d disappeared " 443 "on port %d\n", up->device->address, port)); 444 usb_disconnect_port(up, USBDEV(sc->sc_dev)); 445 usbd_clear_port_feature(dev, port, 446 UHF_C_PORT_CONNECTION); 447 } 448 if (!(status & UPS_CURRENT_CONNECT_STATUS)) { 449 /* Nothing connected, just ignore it. */ 450 DPRINTFN(3,("uhub_explore: port=%d !CURRENT_CONNECT" 451 "_STATUS\n", port)); 452 continue; 453 } 454 455 /* Connected */ 456 457 if (!(status & UPS_PORT_POWER)) 458 printf("%s: strange, connected port %d has no power\n", 459 USBDEVNAME(sc->sc_dev), port); 460 461 /* Wait for maximum device power up time. */ 462 usbd_delay_ms(dev, USB_PORT_POWERUP_DELAY); 463 464 /* Reset port, which implies enabling it. */ 465 if (usbd_reset_port(dev, port, &up->status)) { 466 printf("%s: port %d reset failed\n", 467 USBDEVNAME(sc->sc_dev), port); 468 continue; 469 } 470 /* Get port status again, it might have changed during reset */ 471 err = usbd_get_port_status(dev, port, &up->status); 472 if (err) { 473 DPRINTF(("uhub_explore: get port status failed, " 474 "error=%s\n", usbd_errstr(err))); 475 continue; 476 } 477 status = UGETW(up->status.wPortStatus); 478 change = UGETW(up->status.wPortChange); 479 if (!(status & UPS_CURRENT_CONNECT_STATUS)) { 480 /* Nothing connected, just ignore it. */ 481 #ifdef DIAGNOSTIC 482 printf("%s: port %d, device disappeared after reset\n", 483 USBDEVNAME(sc->sc_dev), port); 484 #endif 485 continue; 486 } 487 488 #if 0 489 if (UHUB_IS_HIGH_SPEED(sc) && !(status & UPS_HIGH_SPEED)) { 490 printf("%s: port %d, transaction translation not " 491 "implemented, low/full speed device ignored\n", 492 USBDEVNAME(sc->sc_dev), port); 493 continue; 494 } 495 #endif 496 497 /* Figure out device speed */ 498 if (status & UPS_HIGH_SPEED) 499 speed = USB_SPEED_HIGH; 500 else if (status & UPS_LOW_SPEED) 501 speed = USB_SPEED_LOW; 502 else 503 speed = USB_SPEED_FULL; 504 /* Get device info and set its address. */ 505 err = usbd_new_device(USBDEV(sc->sc_dev), dev->bus, 506 dev->depth + 1, speed, port, up); 507 /* XXX retry a few times? */ 508 if (err) { 509 DPRINTFN(-1,("uhub_explore: usb_new_device failed, " 510 "error=%s\n", usbd_errstr(err))); 511 /* Avoid addressing problems by disabling. */ 512 /* usbd_reset_port(dev, port, &up->status); */ 513 514 /* 515 * The unit refused to accept a new address, or had 516 * some other serious problem. Since we cannot leave 517 * at 0 we have to disable the port instead. 518 */ 519 printf("%s: device problem, disabling port %d\n", 520 USBDEVNAME(sc->sc_dev), port); 521 usbd_clear_port_feature(dev, port, UHF_PORT_ENABLE); 522 } else { 523 /* The port set up succeeded, reset error count. */ 524 up->restartcnt = 0; 525 526 if (up->device->hub) 527 up->device->hub->explore(up->device); 528 } 529 } 530 return (USBD_NORMAL_COMPLETION); 531 } 532 533 #if defined(__NetBSD__) || defined(__OpenBSD__) 534 int 535 uhub_activate(device_ptr_t self, enum devact act) 536 { 537 struct uhub_softc *sc = (struct uhub_softc *)self; 538 struct usbd_hub *hub = sc->sc_hub->hub; 539 usbd_device_handle dev; 540 int nports, port, i; 541 542 switch (act) { 543 case DVACT_ACTIVATE: 544 return (EOPNOTSUPP); 545 546 case DVACT_DEACTIVATE: 547 if (hub == NULL) /* malfunctioning hub */ 548 break; 549 nports = hub->hubdesc.bNbrPorts; 550 for(port = 0; port < nports; port++) { 551 dev = hub->ports[port].device; 552 if (dev != NULL && dev->subdevs != NULL) { 553 for (i = 0; dev->subdevs[i] != NULL; i++) 554 config_deactivate(dev->subdevs[i]); 555 } 556 } 557 break; 558 } 559 return (0); 560 } 561 #endif 562 563 /* 564 * Called from process context when the hub is gone. 565 * Detach all devices on active ports. 566 */ 567 USB_DETACH(uhub) 568 { 569 USB_DETACH_START(uhub, sc); 570 struct usbd_hub *hub = sc->sc_hub->hub; 571 struct usbd_port *rup; 572 int port, nports; 573 574 #if defined(__NetBSD__) || defined(__OpenBSD__) 575 DPRINTF(("uhub_detach: sc=%p flags=%d\n", sc, flags)); 576 #elif defined(__FreeBSD__) 577 DPRINTF(("uhub_detach: sc=%port\n", sc)); 578 #endif 579 580 if (hub == NULL) /* Must be partially working */ 581 return (0); 582 583 usbd_abort_pipe(sc->sc_ipipe); 584 usbd_close_pipe(sc->sc_ipipe); 585 586 nports = hub->hubdesc.bNbrPorts; 587 for(port = 0; port < nports; port++) { 588 rup = &hub->ports[port]; 589 if (rup->device) 590 usb_disconnect_port(rup, self); 591 } 592 593 usbd_add_drv_event(USB_EVENT_DRIVER_DETACH, sc->sc_hub, 594 USBDEV(sc->sc_dev)); 595 596 if (hub->ports[0].tt) 597 free(hub->ports[0].tt, M_USBDEV); 598 free(hub, M_USBDEV); 599 sc->sc_hub->hub = NULL; 600 601 return (0); 602 } 603 604 #if defined(__FreeBSD__) 605 /* Called when a device has been detached from it */ 606 Static void 607 uhub_child_detached(device_t self, device_t child) 608 { 609 struct uhub_softc *sc = device_get_softc(self); 610 usbd_device_handle devhub = sc->sc_hub; 611 usbd_device_handle dev; 612 int nports; 613 int port; 614 int i; 615 616 if (!devhub->hub) 617 /* should never happen; children are only created after init */ 618 panic("hub not fully initialised, but child deleted?"); 619 620 nports = devhub->hub->hubdesc.bNbrPorts; 621 for (port = 0; port < nports; port++) { 622 dev = devhub->hub->ports[port].device; 623 if (dev && dev->subdevs) { 624 for (i = 0; dev->subdevs[i]; i++) { 625 if (dev->subdevs[i] == child) { 626 dev->subdevs[i] = NULL; 627 return; 628 } 629 } 630 } 631 } 632 } 633 #endif 634 635 636 /* 637 * Hub interrupt. 638 * This an indication that some port has changed status. 639 * Notify the bus event handler thread that we need 640 * to be explored again. 641 */ 642 void 643 uhub_intr(usbd_xfer_handle xfer, usbd_private_handle addr, usbd_status status) 644 { 645 struct uhub_softc *sc = addr; 646 647 DPRINTFN(5,("uhub_intr: sc=%p\n", sc)); 648 if (status == USBD_STALLED) 649 usbd_clear_endpoint_stall_async(sc->sc_ipipe); 650 else if (status == USBD_NORMAL_COMPLETION) 651 usb_needs_explore(sc->sc_hub); 652 } 653 654 #if defined(__FreeBSD__) 655 DRIVER_MODULE(uhub, usb, uhubroot_driver, uhubroot_devclass, 0, 0); 656 DRIVER_MODULE(uhub, uhub, uhub_driver, uhub_devclass, usbd_driver_load, 0); 657 #endif 658