sys/dev/usb/uhub.c

   1 /*      $NetBSD: uhub.c,v 1.57 2001/11/20 16:08:37 augustss Exp $       */
   2 /*      $FreeBSD$       */
   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@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/data/usbspec.zip
  43  */
  44
  45 #include <sys/param.h>
  46 #include <sys/systm.h>
  47 #include <sys/kernel.h>
  48 #include <sys/malloc.h>
  49 #if defined(__NetBSD__) || defined(__OpenBSD__)
  50 #include <sys/device.h>
  51 #include <sys/proc.h>
  52 #elif defined(__FreeBSD__)
  53 #include <sys/module.h>
  54 #include <sys/bus.h>
  55 #include "bus_if.h"
  56 #endif
  57 #include <sys/sysctl.h>
  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 USB_DEBUG
  69 #define DPRINTF(x)      if (uhubdebug) logprintf x
  70 #define DPRINTFN(n,x)   if (uhubdebug>(n)) logprintf x
  71 int     uhubdebug = 0;
  72 SYSCTL_NODE(_hw_usb, OID_AUTO, uhub, CTLFLAG_RW, 0, "USB uhub");
  73 SYSCTL_INT(_hw_usb_uhub, OID_AUTO, debug, CTLFLAG_RW,
  74            &uhubdebug, 0, "uhub debug level");
  75 #else
  76 #define DPRINTF(x)
  77 #define DPRINTFN(n,x)
  78 #endif
  79
  80 struct uhub_softc {
  81         USBBASEDEVICE           sc_dev;         /* base device */
  82         usbd_device_handle      sc_hub;         /* USB device */
  83         usbd_pipe_handle        sc_ipipe;       /* interrupt pipe */
  84         u_int8_t                sc_status[1];   /* XXX more ports */
  85         u_char                  sc_running;
  86 };
  87
  88 Static usbd_status uhub_explore(usbd_device_handle hub);
  89 Static void uhub_intr(usbd_xfer_handle, usbd_private_handle,usbd_status);
  90
  91 #if defined(__FreeBSD__)
  92 Static bus_driver_added_t uhub_driver_added;
  93 Static bus_child_detached_t uhub_child_detached;
  94 #endif
  95
  96
  97 /*
  98  * We need two attachment points:
  99  * hub to usb and hub to hub
 100  * Every other driver only connects to hubs
 101  */
 102
 103 #if defined(__NetBSD__) || defined(__OpenBSD__)
 104 USB_DECLARE_DRIVER(uhub);
 105
 106 /* Create the driver instance for the hub connected to hub case */
 107 struct cfattach uhub_uhub_ca = {
 108         sizeof(struct uhub_softc), uhub_match, uhub_attach,
 109         uhub_detach, uhub_activate
 110 };
 111 #elif defined(__FreeBSD__)
 112 USB_DECLARE_DRIVER_INIT(uhub,
 113                         DEVMETHOD(bus_driver_added, uhub_driver_added),
 114                         DEVMETHOD(bus_child_detached, uhub_child_detached),
 115                         DEVMETHOD(device_suspend, bus_generic_suspend),
 116                         DEVMETHOD(device_resume, bus_generic_resume),
 117                         DEVMETHOD(device_shutdown, bus_generic_shutdown)
 118                         );
 119
 120 /* Create the driver instance for the hub connected to usb case. */
 121 devclass_t uhubroot_devclass;
 122
 123 Static device_method_t uhubroot_methods[] = {
 124         DEVMETHOD(device_probe, uhub_match),
 125         DEVMETHOD(device_attach, uhub_attach),
 126
 127         /* detach is not allowed for a root hub */
 128         DEVMETHOD(device_suspend, bus_generic_suspend),
 129         DEVMETHOD(device_resume, bus_generic_resume),
 130         DEVMETHOD(device_shutdown, bus_generic_shutdown),
 131         {0,0}
 132 };
 133
 134 Static  driver_t uhubroot_driver = {
 135         "uhub",
 136         uhubroot_methods,
 137         sizeof(struct uhub_softc)
 138 };
 139 #endif
 140
 141 USB_MATCH(uhub)
 142 {
 143         USB_MATCH_START(uhub, uaa);
 144         usb_device_descriptor_t *dd = usbd_get_device_descriptor(uaa->device);
 145
 146         DPRINTFN(5,("uhub_match, dd=%p\n", dd));
 147         /*
 148          * The subclass for hubs seems to be 0 for some and 1 for others,
 149          * so we just ignore the subclass.
 150          */
 151         if (uaa->iface == NULL && dd->bDeviceClass == UDCLASS_HUB)
 152                 return (UMATCH_DEVCLASS_DEVSUBCLASS);
 153         return (UMATCH_NONE);
 154 }
 155
 156 USB_ATTACH(uhub)
 157 {
 158         USB_ATTACH_START(uhub, sc, uaa);
 159         usbd_device_handle dev = uaa->device;
 160         char *devinfo;
 161         usbd_status err;
 162         struct usbd_hub *hub;
 163         usb_device_request_t req;
 164         usb_hub_descriptor_t hubdesc;
 165         int p, port, nports, nremov, pwrdly;
 166         usbd_interface_handle iface;
 167         usb_endpoint_descriptor_t *ed;
 168
 169         devinfo = malloc(1024, M_TEMP, M_NOWAIT);
 170         if (devinfo == NULL) {
 171                 USB_ATTACH_ERROR_RETURN;
 172         }
 173         DPRINTFN(1,("uhub_attach\n"));
 174         sc->sc_hub = dev;
 175         usbd_devinfo(dev, 1, devinfo);
 176         USB_ATTACH_SETUP;
 177         printf("%s: %s\n", USBDEVNAME(sc->sc_dev), devinfo);
 178
 179         err = usbd_set_config_index(dev, 0, 1);
 180         if (err) {
 181                 DPRINTF(("%s: configuration failed, error=%s\n",
 182                          USBDEVNAME(sc->sc_dev), usbd_errstr(err)));
 183                 free(devinfo, M_TEMP);
 184                 USB_ATTACH_ERROR_RETURN;
 185         }
 186
 187         if (dev->depth > USB_HUB_MAX_DEPTH) {
 188                 printf("%s: hub depth (%d) exceeded, hub ignored\n",
 189                        USBDEVNAME(sc->sc_dev), USB_HUB_MAX_DEPTH);
 190                 free(devinfo, M_TEMP);
 191                 USB_ATTACH_ERROR_RETURN;
 192         }
 193
 194         /* Get hub descriptor. */
 195         req.bmRequestType = UT_READ_CLASS_DEVICE;
 196         req.bRequest = UR_GET_DESCRIPTOR;
 197         USETW(req.wValue, 0);
 198         USETW(req.wIndex, 0);
 199         USETW(req.wLength, USB_HUB_DESCRIPTOR_SIZE);
 200         DPRINTFN(1,("usb_init_hub: getting hub descriptor\n"));
 201         err = usbd_do_request(dev, &req, &hubdesc);
 202         nports = hubdesc.bNbrPorts;
 203         if (!err && nports > 7) {
 204                 USETW(req.wLength, USB_HUB_DESCRIPTOR_SIZE + (nports+1) / 8);
 205                 err = usbd_do_request(dev, &req, &hubdesc);
 206         }
 207         if (err) {
 208                 DPRINTF(("%s: getting hub descriptor failed, error=%s\n",
 209                          USBDEVNAME(sc->sc_dev), usbd_errstr(err)));
 210                 free(devinfo, M_TEMP);
 211                 USB_ATTACH_ERROR_RETURN;
 212         }
 213
 214         for (nremov = 0, port = 1; port <= nports; port++)
 215                 if (!UHD_NOT_REMOV(&hubdesc, port))
 216                         nremov++;
 217         printf("%s: %d port%s with %d removable, %s powered\n",
 218                USBDEVNAME(sc->sc_dev), nports, nports != 1 ? "s" : "",
 219                nremov, dev->self_powered ? "self" : "bus");
 220
 221         hub = malloc(sizeof(*hub) + (nports-1) * sizeof(struct usbd_port),
 222                      M_USBDEV, M_NOWAIT);
 223         if (hub == NULL) {
 224                 free(devinfo, M_TEMP);
 225                 USB_ATTACH_ERROR_RETURN;
 226         }
 227         dev->hub = hub;
 228         dev->hub->hubsoftc = sc;
 229         hub->explore = uhub_explore;
 230         hub->hubdesc = hubdesc;
 231
 232         DPRINTFN(1,("usbhub_init_hub: selfpowered=%d, parent=%p, "
 233                     "parent->selfpowered=%d\n",
 234                  dev->self_powered, dev->powersrc->parent,
 235                  dev->powersrc->parent ?
 236                  dev->powersrc->parent->self_powered : 0));
 237
 238         if (!dev->self_powered && dev->powersrc->parent != NULL &&
 239             !dev->powersrc->parent->self_powered) {
 240                 printf("%s: bus powered hub connected to bus powered hub, "
 241                        "ignored\n", USBDEVNAME(sc->sc_dev));
 242                 goto bad;
 243         }
 244
 245         /* Set up interrupt pipe. */
 246         err = usbd_device2interface_handle(dev, 0, &iface);
 247         if (err) {
 248                 printf("%s: no interface handle\n", USBDEVNAME(sc->sc_dev));
 249                 goto bad;
 250         }
 251         ed = usbd_interface2endpoint_descriptor(iface, 0);
 252         if (ed == NULL) {
 253                 printf("%s: no endpoint descriptor\n", USBDEVNAME(sc->sc_dev));
 254                 goto bad;
 255         }
 256         if ((ed->bmAttributes & UE_XFERTYPE) != UE_INTERRUPT) {
 257                 printf("%s: bad interrupt endpoint\n", USBDEVNAME(sc->sc_dev));
 258                 goto bad;
 259         }
 260
 261         err = usbd_open_pipe_intr(iface, ed->bEndpointAddress,
 262                   USBD_SHORT_XFER_OK, &sc->sc_ipipe, sc, sc->sc_status,
 263                   sizeof(sc->sc_status), uhub_intr, UHUB_INTR_INTERVAL);
 264         if (err) {
 265                 printf("%s: cannot open interrupt pipe\n",
 266                        USBDEVNAME(sc->sc_dev));
 267                 goto bad;
 268         }
 269
 270         /* Wait with power off for a while. */
 271         usbd_delay_ms(dev, USB_POWER_DOWN_TIME);
 272
 273         usbd_add_drv_event(USB_EVENT_DRIVER_ATTACH, dev, USBDEV(sc->sc_dev));
 274
 275         /*
 276          * To have the best chance of success we do things in the exact same
 277          * order as Windoze98.  This should not be necessary, but some
 278          * devices do not follow the USB specs to the letter.
 279          *
 280          * These are the events on the bus when a hub is attached:
 281          *  Get device and config descriptors (see attach code)
 282          *  Get hub descriptor (see above)
 283          *  For all ports
 284          *     turn on power
 285          *     wait for power to become stable
 286          * (all below happens in explore code)
 287          *  For all ports
 288          *     clear C_PORT_CONNECTION
 289          *  For all ports
 290          *     get port status
 291          *     if device connected
 292          *        wait 100 ms
 293          *        turn on reset
 294          *        wait
 295          *        clear C_PORT_RESET
 296          *        get port status
 297          *        proceed with device attachment
 298          */
 299
 300         /* Set up data structures */
 301         for (p = 0; p < nports; p++) {
 302                 struct usbd_port *up = &hub->ports[p];
 303                 up->device = 0;
 304                 up->parent = dev;
 305                 up->portno = p+1;
 306                 if (dev->self_powered)
 307                         /* Self powered hub, give ports maximum current. */
 308                         up->power = USB_MAX_POWER;
 309                 else
 310                         up->power = USB_MIN_POWER;
 311         }
 312
 313         /* XXX should check for none, individual, or ganged power? */
 314
 315         pwrdly = dev->hub->hubdesc.bPwrOn2PwrGood * UHD_PWRON_FACTOR
 316             + USB_EXTRA_POWER_UP_TIME;
 317         for (port = 1; port <= nports; port++) {
 318                 /* Turn the power on. */
 319                 err = usbd_set_port_feature(dev, port, UHF_PORT_POWER);
 320                 if (err)
 321                         printf("%s: port %d power on failed, %s\n",
 322                                USBDEVNAME(sc->sc_dev), port,
 323                                usbd_errstr(err));
 324                 DPRINTF(("usb_init_port: turn on port %d power\n", port));
 325                 /* Wait for stable power. */
 326                 usbd_delay_ms(dev, pwrdly);
 327         }
 328
 329         /* The usual exploration will finish the setup. */
 330
 331         sc->sc_running = 1;
 332
 333         USB_ATTACH_SUCCESS_RETURN;
 334
 335  bad:
 336         free(hub, M_USBDEV);
 337         free(devinfo, M_TEMP);
 338         dev->hub = 0;
 339         USB_ATTACH_ERROR_RETURN;
 340 }
 341
 342 usbd_status
 343 uhub_explore(usbd_device_handle dev)
 344 {
 345         usb_hub_descriptor_t *hd = &dev->hub->hubdesc;
 346         struct uhub_softc *sc = dev->hub->hubsoftc;
 347         struct usbd_port *up;
 348         usbd_status err;
 349         int speed;
 350         int port;
 351         int change, status;
 352
 353         DPRINTFN(10, ("uhub_explore dev=%p addr=%d\n", dev, dev->address));
 354
 355         if (!sc->sc_running)
 356                 return (USBD_NOT_STARTED);
 357
 358         /* Ignore hubs that are too deep. */
 359         if (dev->depth > USB_HUB_MAX_DEPTH)
 360                 return (USBD_TOO_DEEP);
 361
 362         for(port = 1; port <= hd->bNbrPorts; port++) {
 363                 up = &dev->hub->ports[port-1];
 364                 err = usbd_get_port_status(dev, port, &up->status);
 365                 if (err) {
 366                         DPRINTF(("uhub_explore: get port status failed, "
 367                                  "error=%s\n", usbd_errstr(err)));
 368                         continue;
 369                 }
 370                 status = UGETW(up->status.wPortStatus);
 371                 change = UGETW(up->status.wPortChange);
 372                 DPRINTFN(3,("uhub_explore: %s port %d status 0x%04x 0x%04x\n",
 373                             USBDEVNAME(sc->sc_dev), port, status, change));
 374                 if (change & UPS_C_PORT_ENABLED) {
 375                         DPRINTF(("uhub_explore: C_PORT_ENABLED\n"));
 376                         usbd_clear_port_feature(dev, port, UHF_C_PORT_ENABLE);
 377                         if (status & UPS_PORT_ENABLED) {
 378                                 printf("%s: illegal enable change, port %d\n",
 379                                        USBDEVNAME(sc->sc_dev), port);
 380                         } else {
 381                                 /* Port error condition. */
 382                                 if (up->restartcnt) /* no message first time */
 383                                         printf("%s: port error, restarting "
 384                                                "port %d\n",
 385                                                USBDEVNAME(sc->sc_dev), port);
 386
 387                                 if (up->restartcnt++ < USBD_RESTART_MAX)
 388                                         goto disco;
 389                                 else
 390                                         printf("%s: port error, giving up "
 391                                                "port %d\n",
 392                                                USBDEVNAME(sc->sc_dev), port);
 393                         }
 394                 }
 395                 if (!(change & UPS_C_CONNECT_STATUS)) {
 396                         DPRINTFN(3,("uhub_explore: port=%d !C_CONNECT_"
 397                                     "STATUS\n", port));
 398                         /* No status change, just do recursive explore. */
 399                         if (up->device != NULL && up->device->hub != NULL)
 400                                 up->device->hub->explore(up->device);
 401 #if 0 && defined(DIAGNOSTIC)
 402                         if (up->device == NULL &&
 403                             (status & UPS_CURRENT_CONNECT_STATUS))
 404                                 printf("%s: connected, no device\n",
 405                                        USBDEVNAME(sc->sc_dev));
 406 #endif
 407                         continue;
 408                 }
 409
 410                 /* We have a connect status change, handle it. */
 411
 412                 DPRINTF(("uhub_explore: status change hub=%d port=%d\n",
 413                          dev->address, port));
 414                 usbd_clear_port_feature(dev, port, UHF_C_PORT_CONNECTION);
 415                 /*usbd_clear_port_feature(dev, port, UHF_C_PORT_ENABLE);*/
 416                 /*
 417                  * If there is already a device on the port the change status
 418                  * must mean that is has disconnected.  Looking at the
 419                  * current connect status is not enough to figure this out
 420                  * since a new unit may have been connected before we handle
 421                  * the disconnect.
 422                  */
 423         disco:
 424                 if (up->device != NULL) {
 425                         /* Disconnected */
 426                         DPRINTF(("uhub_explore: device addr=%d disappeared "
 427                                  "on port %d\n", up->device->address, port));
 428                         usb_disconnect_port(up, USBDEV(sc->sc_dev));
 429                         usbd_clear_port_feature(dev, port,
 430                                                 UHF_C_PORT_CONNECTION);
 431                 }
 432                 if (!(status & UPS_CURRENT_CONNECT_STATUS)) {
 433                         /* Nothing connected, just ignore it. */
 434                         DPRINTFN(3,("uhub_explore: port=%d !CURRENT_CONNECT"
 435                                     "_STATUS\n", port));
 436                         continue;
 437                 }
 438
 439                 /* Connected */
 440
 441                 if (!(status & UPS_PORT_POWER))
 442                         printf("%s: strange, connected port %d has no power\n",
 443                                USBDEVNAME(sc->sc_dev), port);
 444
 445                 /* Wait for maximum device power up time. */
 446                 usbd_delay_ms(dev, USB_PORT_POWERUP_DELAY);
 447
 448                 /* Reset port, which implies enabling it. */
 449                 if (usbd_reset_port(dev, port, &up->status)) {
 450                         printf("%s: port %d reset failed\n",
 451                                USBDEVNAME(sc->sc_dev), port);
 452                         continue;
 453                 }
 454                 /* Get port status again, it might have changed during reset */
 455                 err = usbd_get_port_status(dev, port, &up->status);
 456                 if (err) {
 457                         DPRINTF(("uhub_explore: get port status failed, "
 458                                  "error=%s\n", usbd_errstr(err)));
 459                         continue;
 460                 }
 461                 status = UGETW(up->status.wPortStatus);
 462                 change = UGETW(up->status.wPortChange);
 463                 if (!(status & UPS_CURRENT_CONNECT_STATUS)) {
 464                         /* Nothing connected, just ignore it. */
 465 #ifdef DIAGNOSTIC
 466                         printf("%s: port %d, device disappeared after reset\n",
 467                                USBDEVNAME(sc->sc_dev), port);
 468 #endif
 469                         continue;
 470                 }
 471
 472                 /* Figure out device speed */
 473                 if (status & UPS_HIGH_SPEED)
 474                         speed = USB_SPEED_HIGH;
 475                 else if (status & UPS_LOW_SPEED)
 476                         speed = USB_SPEED_LOW;
 477                 else
 478                         speed = USB_SPEED_FULL;
 479                 /* Get device info and set its address. */
 480                 err = usbd_new_device(USBDEV(sc->sc_dev), dev->bus,
 481                     dev->depth + 1, speed, port, up);
 482                 /* XXX retry a few times? */
 483                 if (err) {
 484                         DPRINTFN(-1,("uhub_explore: usb_new_device failed, "
 485                                      "error=%s\n", usbd_errstr(err)));
 486                         /* Avoid addressing problems by disabling. */
 487                         /* usbd_reset_port(dev, port, &up->status); */
 488
 489                         /*
 490                          * The unit refused to accept a new address, or had
 491                          * some other serious problem.  Since we cannot leave
 492                          * at 0 we have to disable the port instead.
 493                          */
 494                         printf("%s: device problem, disabling port %d\n",
 495                                USBDEVNAME(sc->sc_dev), port);
 496                         usbd_clear_port_feature(dev, port, UHF_PORT_ENABLE);
 497                 } else {
 498                         /* The port set up succeeded, reset error count. */
 499                         up->restartcnt = 0;
 500
 501                         if (up->device->hub)
 502                                 up->device->hub->explore(up->device);
 503                 }
 504         }
 505         return (USBD_NORMAL_COMPLETION);
 506 }
 507
 508 #if defined(__NetBSD__) || defined(__OpenBSD__)
 509 int
 510 uhub_activate(device_ptr_t self, enum devact act)
 511 {
 512         struct uhub_softc *sc = (struct uhub_softc *)self;
 513         struct usbd_hub *hub = sc->sc_hub->hub;
 514         usbd_device_handle dev;
 515         int nports, port, i;
 516
 517         switch (act) {
 518         case DVACT_ACTIVATE:
 519                 return (EOPNOTSUPP);
 520                 break;
 521
 522         case DVACT_DEACTIVATE:
 523                 if (hub == NULL) /* malfunctioning hub */
 524                         break;
 525                 nports = hub->hubdesc.bNbrPorts;
 526                 for(port = 0; port < nports; port++) {
 527                         dev = hub->ports[port].device;
 528                         if (dev != NULL && dev->subdevs != NULL) {
 529                                 for (i = 0; dev->subdevs[i] != NULL; i++)
 530                                         config_deactivate(dev->subdevs[i]);
 531                         }
 532                 }
 533                 break;
 534         }
 535         return (0);
 536 }
 537 #endif
 538
 539 /*
 540  * Called from process context when the hub is gone.
 541  * Detach all devices on active ports.
 542  */
 543 USB_DETACH(uhub)
 544 {
 545         USB_DETACH_START(uhub, sc);
 546         struct usbd_hub *hub = sc->sc_hub->hub;
 547         struct usbd_port *rup;
 548         int port, nports;
 549
 550 #if defined(__NetBSD__) || defined(__OpenBSD__)
 551         DPRINTF(("uhub_detach: sc=%p flags=%d\n", sc, flags));
 552 #elif defined(__FreeBSD__)
 553         DPRINTF(("uhub_detach: sc=%port\n", sc));
 554 #endif
 555
 556         if (hub == NULL)                /* Must be partially working */
 557                 return (0);
 558
 559         usbd_abort_pipe(sc->sc_ipipe);
 560         usbd_close_pipe(sc->sc_ipipe);
 561
 562         nports = hub->hubdesc.bNbrPorts;
 563         for(port = 0; port < nports; port++) {
 564                 rup = &hub->ports[port];
 565                 if (rup->device)
 566                         usb_disconnect_port(rup, self);
 567         }
 568
 569         usbd_add_drv_event(USB_EVENT_DRIVER_DETACH, sc->sc_hub,
 570                            USBDEV(sc->sc_dev));
 571
 572         free(hub, M_USBDEV);
 573         sc->sc_hub->hub = NULL;
 574
 575         return (0);
 576 }
 577
 578 #if defined(__FreeBSD__)
 579 /* Called when a device has been detached from it */
 580 Static void
 581 uhub_child_detached(device_t self, device_t child)
 582 {
 583        struct uhub_softc *sc = device_get_softc(self);
 584        usbd_device_handle devhub = sc->sc_hub;
 585        usbd_device_handle dev;
 586        int nports;
 587        int port;
 588        int i;
 589
 590        if (!devhub->hub)
 591                /* should never happen; children are only created after init */
 592                panic("hub not fully initialised, but child deleted?");
 593
 594        nports = devhub->hub->hubdesc.bNbrPorts;
 595        for (port = 0; port < nports; port++) {
 596                dev = devhub->hub->ports[port].device;
 597                if (dev && dev->subdevs) {
 598                        for (i = 0; dev->subdevs[i]; i++) {
 599                                if (dev->subdevs[i] == child) {
 600                                        dev->subdevs[i] = NULL;
 601                                        return;
 602                                }
 603                        }
 604                }
 605        }
 606 }
 607
 608 Static void
 609 uhub_driver_added(device_t _dev, driver_t *_driver)
 610 {
 611         /* Don't do anything, as reprobing does not work currently. We should
 612          * really call through to usbd_new_device or a function along those
 613          * lines that reinitialises the device if it is not owned by any
 614          * driver. But this is complicated. Manual replugging by the user is
 615          * easier.
 616          */
 617
 618          ;
 619 }
 620 #endif
 621
 622
 623 /*
 624  * Hub interrupt.
 625  * This an indication that some port has changed status.
 626  * Notify the bus event handler thread that we need
 627  * to be explored again.
 628  */
 629 void
 630 uhub_intr(usbd_xfer_handle xfer, usbd_private_handle addr, usbd_status status)
 631 {
 632         struct uhub_softc *sc = addr;
 633
 634         DPRINTFN(5,("uhub_intr: sc=%p\n", sc));
 635         if (status == USBD_STALLED)
 636                 usbd_clear_endpoint_stall_async(sc->sc_ipipe);
 637         else if (status == USBD_NORMAL_COMPLETION)
 638                 usb_needs_explore(sc->sc_hub);
 639 }
 640
 641 #if defined(__FreeBSD__)
 642 DRIVER_MODULE(uhub, usb, uhubroot_driver, uhubroot_devclass, 0, 0);
 643 DRIVER_MODULE(uhub, uhub, uhub_driver, uhub_devclass, usbd_driver_load, 0);
 644 #endif