sys/bus/usb/uhub.c

   1 /*      $NetBSD: uhub.c,v 1.68 2004/06/29 06:30:05 mycroft Exp $        */
   2 /*      $FreeBSD: src/sys/dev/usb/uhub.c,v 1.69.2.1 2005/12/18 15:51:31 iedowse Exp $   */
   3 /*      $DragonFly: src/sys/bus/usb/uhub.c,v 1.14 2007/06/27 12:27:59 hasso 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 #include <sys/module.h>
  51 #include <sys/bus.h>
  52 #include <sys/lock.h>
  53 #include <sys/thread2.h>
  54 #include <sys/sysctl.h>
  55
  56 #include <bus/usb/usb.h>
  57 #include <bus/usb/usbdi.h>
  58 #include <bus/usb/usbdi_util.h>
  59 #include <bus/usb/usbdivar.h>
  60
  61 #define UHUB_INTR_INTERVAL 255  /* ms */
  62
  63 #ifdef USB_DEBUG
  64 #define DPRINTF(x)      if (uhubdebug) logprintf x
  65 #define DPRINTFN(n,x)   if (uhubdebug>(n)) logprintf x
  66 int     uhubdebug = 0;
  67 SYSCTL_NODE(_hw_usb, OID_AUTO, uhub, CTLFLAG_RW, 0, "USB uhub");
  68 SYSCTL_INT(_hw_usb_uhub, OID_AUTO, debug, CTLFLAG_RW,
  69            &uhubdebug, 0, "uhub debug level");
  70 #else
  71 #define DPRINTF(x)
  72 #define DPRINTFN(n,x)
  73 #endif
  74
  75 struct uhub_softc {
  76         USBBASEDEVICE           sc_dev;         /* base device */
  77         usbd_device_handle      sc_hub;         /* USB device */
  78         usbd_pipe_handle        sc_ipipe;       /* interrupt pipe */
  79         u_int8_t                sc_status[1];   /* XXX more ports */
  80         u_char                  sc_running;
  81 };
  82 #define UHUB_PROTO(sc) ((sc)->sc_hub->ddesc.bDeviceProtocol)
  83 #define UHUB_IS_HIGH_SPEED(sc) (UHUB_PROTO(sc) != UDPROTO_FSHUB)
  84 #define UHUB_IS_SINGLE_TT(sc) (UHUB_PROTO(sc) == UDPROTO_HSHUBSTT)
  85
  86 Static usbd_status uhub_explore(usbd_device_handle hub);
  87 Static void uhub_intr(usbd_xfer_handle, usbd_private_handle,usbd_status);
  88
  89 Static bus_child_detached_t uhub_child_detached;
  90 Static bus_child_location_str_t uhub_child_location_str;
  91 Static bus_child_pnpinfo_str_t uhub_child_pnpinfo_str;
  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 USB_DECLARE_DRIVER_INIT(uhub,
 100         DEVMETHOD(bus_child_detached, uhub_child_detached),
 101         DEVMETHOD(bus_child_pnpinfo_str, uhub_child_pnpinfo_str),
 102         DEVMETHOD(bus_child_location_str, uhub_child_location_str),
 103         DEVMETHOD(bus_driver_added, bus_generic_driver_added),
 104         DEVMETHOD(device_suspend, bus_generic_suspend),
 105         DEVMETHOD(device_resume, bus_generic_resume),
 106         DEVMETHOD(device_shutdown, bus_generic_shutdown)
 107         );
 108
 109 /* Create the driver instance for the hub connected to usb case. */
 110 devclass_t uhubroot_devclass;
 111
 112 Static device_method_t uhubroot_methods[] = {
 113         DEVMETHOD(bus_child_detached, uhub_child_detached),
 114         DEVMETHOD(bus_child_location_str, uhub_child_location_str),
 115         DEVMETHOD(bus_child_pnpinfo_str, uhub_child_pnpinfo_str),
 116         DEVMETHOD(bus_driver_added, bus_generic_driver_added),
 117
 118         DEVMETHOD(device_probe, uhub_match),
 119         DEVMETHOD(device_attach, uhub_attach),
 120         DEVMETHOD(device_detach, uhub_detach),
 121         DEVMETHOD(device_suspend, bus_generic_suspend),
 122         DEVMETHOD(device_resume, bus_generic_resume),
 123         DEVMETHOD(device_shutdown, bus_generic_shutdown),
 124         {0,0}
 125 };
 126
 127 Static  driver_t uhubroot_driver = {
 128         "uhub",
 129         uhubroot_methods,
 130         sizeof(struct uhub_softc)
 131 };
 132
 133 USB_MATCH(uhub)
 134 {
 135         USB_MATCH_START(uhub, uaa);
 136         usb_device_descriptor_t *dd = usbd_get_device_descriptor(uaa->device);
 137
 138         DPRINTFN(5,("uhub_match, dd=%p\n", dd));
 139         /*
 140          * The subclass for hubs seems to be 0 for some and 1 for others,
 141          * so we just ignore the subclass.
 142          */
 143         if (uaa->iface == NULL && dd->bDeviceClass == UDCLASS_HUB)
 144                 return (UMATCH_DEVCLASS_DEVSUBCLASS);
 145         return (UMATCH_NONE);
 146 }
 147
 148 USB_ATTACH(uhub)
 149 {
 150         USB_ATTACH_START(uhub, sc, uaa);
 151         usbd_device_handle dev = uaa->device;
 152         char *devinfo;
 153         usbd_status err;
 154         struct usbd_hub *hub = NULL;
 155         usb_device_request_t req;
 156         usb_hub_descriptor_t hubdesc;
 157         int p, port, nports, nremov, pwrdly;
 158         usbd_interface_handle iface;
 159         usb_endpoint_descriptor_t *ed;
 160         struct usbd_tt *tts = NULL;
 161
 162         devinfo = kmalloc(1024, M_TEMP, M_WAITOK);
 163         DPRINTFN(1,("uhub_attach\n"));
 164         sc->sc_hub = dev;
 165         usbd_devinfo(dev, 1, devinfo);
 166         USB_ATTACH_SETUP;
 167
 168         if (dev->depth > 0 && UHUB_IS_HIGH_SPEED(sc)) {
 169                 kprintf("%s: %s transaction translator%s\n",
 170                     USBDEVNAME(sc->sc_dev),
 171                     UHUB_IS_SINGLE_TT(sc) ? "single" : "multiple",
 172                     UHUB_IS_SINGLE_TT(sc) ? "" : "s");
 173         }
 174         err = usbd_set_config_index(dev, 0, 1);
 175         if (err) {
 176                 DPRINTF(("%s: configuration failed, error=%s\n",
 177                          USBDEVNAME(sc->sc_dev), usbd_errstr(err)));
 178                 kfree(devinfo, M_TEMP);
 179                 USB_ATTACH_ERROR_RETURN;
 180         }
 181
 182         if (dev->depth > USB_HUB_MAX_DEPTH) {
 183                 kprintf("%s: hub depth (%d) exceeded, hub ignored\n",
 184                        USBDEVNAME(sc->sc_dev), USB_HUB_MAX_DEPTH);
 185                 kfree(devinfo, M_TEMP);
 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, (dev->address > 1 ? UDESC_HUB : 0), 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                 kfree(devinfo, M_TEMP);
 206                 USB_ATTACH_ERROR_RETURN;
 207         }
 208
 209         for (nremov = 0, port = 1; port <= nports; port++)
 210                 if (!UHD_NOT_REMOV(&hubdesc, port))
 211                         nremov++;
 212         kprintf("%s: %d port%s with %d removable, %s powered\n",
 213                USBDEVNAME(sc->sc_dev), nports, nports != 1 ? "s" : "",
 214                nremov, dev->self_powered ? "self" : "bus");
 215
 216         if (nports == 0) {
 217                 kprintf("%s: no ports, hub ignored\n", USBDEVNAME(sc->sc_dev));
 218                 goto bad;
 219         }
 220
 221         hub = kmalloc(sizeof(*hub) + (nports-1) * sizeof(struct usbd_port),
 222                      M_USBDEV, M_WAITOK);
 223         dev->hub = hub;
 224         dev->hub->hubsoftc = sc;
 225         hub->explore = uhub_explore;
 226         hub->hubdesc = hubdesc;
 227
 228         DPRINTFN(1,("usbhub_init_hub: selfpowered=%d, parent=%p, "
 229                     "parent->selfpowered=%d\n",
 230                  dev->self_powered, dev->powersrc->parent,
 231                  dev->powersrc->parent ?
 232                  dev->powersrc->parent->self_powered : 0));
 233
 234         if (!dev->self_powered && dev->powersrc->parent != NULL &&
 235             !dev->powersrc->parent->self_powered) {
 236                 kprintf("%s: bus powered hub connected to bus powered hub, "
 237                        "ignored\n", USBDEVNAME(sc->sc_dev));
 238                 goto bad;
 239         }
 240
 241         /* Set up interrupt pipe. */
 242         err = usbd_device2interface_handle(dev, 0, &iface);
 243         if (err) {
 244                 kprintf("%s: no interface handle\n", USBDEVNAME(sc->sc_dev));
 245                 goto bad;
 246         }
 247         ed = usbd_interface2endpoint_descriptor(iface, 0);
 248         if (ed == NULL) {
 249                 kprintf("%s: no endpoint descriptor\n", USBDEVNAME(sc->sc_dev));
 250                 goto bad;
 251         }
 252         if ((ed->bmAttributes & UE_XFERTYPE) != UE_INTERRUPT) {
 253                 kprintf("%s: bad interrupt endpoint\n", USBDEVNAME(sc->sc_dev));
 254                 goto bad;
 255         }
 256
 257         err = usbd_open_pipe_intr(iface, ed->bEndpointAddress,
 258                   USBD_SHORT_XFER_OK, &sc->sc_ipipe, sc, sc->sc_status,
 259                   sizeof(sc->sc_status), uhub_intr, UHUB_INTR_INTERVAL);
 260         if (err) {
 261                 kprintf("%s: cannot open interrupt pipe\n",
 262                        USBDEVNAME(sc->sc_dev));
 263                 goto bad;
 264         }
 265
 266         /* Wait with power off for a while. */
 267         usbd_delay_ms(dev, USB_POWER_DOWN_TIME);
 268
 269         usbd_add_drv_event(USB_EVENT_DRIVER_ATTACH, dev, sc->sc_dev);
 270
 271         /*
 272          * To have the best chance of success we do things in the exact same
 273          * order as Windoze98.  This should not be necessary, but some
 274          * devices do not follow the USB specs to the letter.
 275          *
 276          * These are the events on the bus when a hub is attached:
 277          *  Get device and config descriptors (see attach code)
 278          *  Get hub descriptor (see above)
 279          *  For all ports
 280          *     turn on power
 281          *     wait for power to become stable
 282          * (all below happens in explore code)
 283          *  For all ports
 284          *     clear C_PORT_CONNECTION
 285          *  For all ports
 286          *     get port status
 287          *     if device connected
 288          *        wait 100 ms
 289          *        turn on reset
 290          *        wait
 291          *        clear C_PORT_RESET
 292          *        get port status
 293          *        proceed with device attachment
 294          */
 295
 296         if (UHUB_IS_HIGH_SPEED(sc)) {
 297                 tts = kmalloc((UHUB_IS_SINGLE_TT(sc) ? 1 : nports) *
 298                               sizeof(struct usbd_tt), M_USBDEV, M_WAITOK);
 299         }
 300
 301         /* Set up data structures */
 302         for (p = 0; p < nports; p++) {
 303                 struct usbd_port *up = &hub->ports[p];
 304                 up->device = NULL;
 305                 up->parent = dev;
 306                 up->portno = p+1;
 307                 if (dev->self_powered)
 308                         /* Self powered hub, give ports maximum current. */
 309                         up->power = USB_MAX_POWER;
 310                 else
 311                         up->power = USB_MIN_POWER;
 312                 up->restartcnt = 0;
 313                 if (UHUB_IS_HIGH_SPEED(sc)) {
 314                         up->tt = &tts[UHUB_IS_SINGLE_TT(sc) ? 0 : p];
 315                         up->tt->hub = hub;
 316                 } else {
 317                         up->tt = NULL;
 318                 }
 319         }
 320
 321         /* XXX should check for none, individual, or ganged power? */
 322
 323         pwrdly = dev->hub->hubdesc.bPwrOn2PwrGood * UHD_PWRON_FACTOR
 324             + USB_EXTRA_POWER_UP_TIME;
 325         for (port = 1; port <= nports; port++) {
 326                 /* Turn the power on. */
 327                 err = usbd_set_port_feature(dev, port, UHF_PORT_POWER);
 328                 if (err)
 329                         kprintf("%s: port %d power on failed, %s\n",
 330                                USBDEVNAME(sc->sc_dev), port,
 331                                usbd_errstr(err));
 332                 DPRINTF(("usb_init_port: turn on port %d power\n", port));
 333                 /* Wait for stable power. */
 334                 usbd_delay_ms(dev, pwrdly);
 335         }
 336
 337         /* The usual exploration will finish the setup. */
 338
 339         sc->sc_running = 1;
 340
 341         USB_ATTACH_SUCCESS_RETURN;
 342
 343  bad:
 344         if (hub)
 345                 kfree(hub, M_USBDEV);
 346         kfree(devinfo, M_TEMP);
 347         dev->hub = NULL;
 348         USB_ATTACH_ERROR_RETURN;
 349 }
 350
 351 usbd_status
 352 uhub_explore(usbd_device_handle dev)
 353 {
 354         usb_hub_descriptor_t *hd = &dev->hub->hubdesc;
 355         struct uhub_softc *sc = dev->hub->hubsoftc;
 356         struct usbd_port *up;
 357         usbd_status err;
 358         int speed;
 359         int port;
 360         int change, status;
 361
 362         DPRINTFN(10, ("uhub_explore dev=%p addr=%d\n", dev, dev->address));
 363
 364         if (!sc->sc_running)
 365                 return (USBD_NOT_STARTED);
 366
 367         /* Ignore hubs that are too deep. */
 368         if (dev->depth > USB_HUB_MAX_DEPTH)
 369                 return (USBD_TOO_DEEP);
 370
 371         for(port = 1; port <= hd->bNbrPorts; port++) {
 372                 up = &dev->hub->ports[port-1];
 373                 err = usbd_get_port_status(dev, port, &up->status);
 374                 if (err) {
 375                         DPRINTF(("uhub_explore: get port status failed, "
 376                                  "error=%s\n", usbd_errstr(err)));
 377                         continue;
 378                 }
 379                 status = UGETW(up->status.wPortStatus);
 380                 change = UGETW(up->status.wPortChange);
 381                 DPRINTFN(3,("uhub_explore: %s port %d status 0x%04x 0x%04x\n",
 382                             USBDEVNAME(sc->sc_dev), port, status, change));
 383                 if (change & UPS_C_PORT_ENABLED) {
 384                         DPRINTF(("uhub_explore: C_PORT_ENABLED 0x%x\n", change));
 385                         usbd_clear_port_feature(dev, port, UHF_C_PORT_ENABLE);
 386                         if (change & UPS_C_CONNECT_STATUS) {
 387                                 /* Ignore the port error if the device
 388                                    vanished. */
 389                         } else if (status & UPS_PORT_ENABLED) {
 390                                 kprintf("%s: illegal enable change, port %d\n",
 391                                        USBDEVNAME(sc->sc_dev), port);
 392                         } else {
 393                                 /* Port error condition. */
 394                                 if (up->restartcnt) /* no message first time */
 395                                         kprintf("%s: port error, restarting "
 396                                                "port %d\n",
 397                                                USBDEVNAME(sc->sc_dev), port);
 398
 399                                 if (up->restartcnt++ < USBD_RESTART_MAX)
 400                                         goto disco;
 401                                 else
 402                                         kprintf("%s: port error, giving up "
 403                                                "port %d\n",
 404                                           USBDEVNAME(sc->sc_dev), port);
 405                         }
 406                 }
 407                 if (!(change & UPS_C_CONNECT_STATUS)) {
 408                         DPRINTFN(3,("uhub_explore: port=%d !C_CONNECT_"
 409                                     "STATUS\n", port));
 410                         /* No status change, just do recursive explore. */
 411                         if (up->device != NULL && up->device->hub != NULL)
 412                                 up->device->hub->explore(up->device);
 413 #if 0 && defined(DIAGNOSTIC)
 414                         if (up->device == NULL &&
 415                             (status & UPS_CURRENT_CONNECT_STATUS))
 416                                 kprintf("%s: connected, no device\n",
 417                                        USBDEVNAME(sc->sc_dev));
 418 #endif
 419                         continue;
 420                 }
 421
 422                 /* We have a connect status change, handle it. */
 423
 424                 DPRINTF(("uhub_explore: status change hub=%d port=%d\n",
 425                          dev->address, port));
 426                 usbd_clear_port_feature(dev, port, UHF_C_PORT_CONNECTION);
 427                 /*usbd_clear_port_feature(dev, port, UHF_C_PORT_ENABLE);*/
 428                 /*
 429                  * If there is already a device on the port the change status
 430                  * must mean that is has disconnected.  Looking at the
 431                  * current connect status is not enough to figure this out
 432                  * since a new unit may have been connected before we handle
 433                  * the disconnect.
 434                  */
 435         disco:
 436                 if (up->device != NULL) {
 437                         /* Disconnected */
 438                         DPRINTF(("uhub_explore: device addr=%d disappeared "
 439                                  "on port %d\n", up->device->address, port));
 440                         usb_disconnect_port(up, sc->sc_dev);
 441                         usbd_clear_port_feature(dev, port,
 442                                                 UHF_C_PORT_CONNECTION);
 443                 }
 444                 if (!(status & UPS_CURRENT_CONNECT_STATUS)) {
 445                         /* Nothing connected, just ignore it. */
 446                         DPRINTFN(3,("uhub_explore: port=%d !CURRENT_CONNECT"
 447                                     "_STATUS\n", port));
 448                         continue;
 449                 }
 450
 451                 /* Connected */
 452
 453                 if (!(status & UPS_PORT_POWER))
 454                         kprintf("%s: strange, connected port %d has no power\n",
 455                                USBDEVNAME(sc->sc_dev), port);
 456
 457                 /* Wait for maximum device power up time. */
 458                 usbd_delay_ms(dev, USB_PORT_POWERUP_DELAY);
 459
 460                 /* Reset port, which implies enabling it. */
 461                 if (usbd_reset_port(dev, port, &up->status)) {
 462                         kprintf("%s: port %d reset failed\n",
 463                                USBDEVNAME(sc->sc_dev), port);
 464                         continue;
 465                 }
 466                 /* Get port status again, it might have changed during reset */
 467                 err = usbd_get_port_status(dev, port, &up->status);
 468                 if (err) {
 469                         DPRINTF(("uhub_explore: get port status failed, "
 470                                  "error=%s\n", usbd_errstr(err)));
 471                         continue;
 472                 }
 473                 status = UGETW(up->status.wPortStatus);
 474                 change = UGETW(up->status.wPortChange);
 475                 if (!(status & UPS_CURRENT_CONNECT_STATUS)) {
 476                         /* Nothing connected, just ignore it. */
 477 #ifdef DIAGNOSTIC
 478                         kprintf("%s: port %d, device disappeared after reset\n",
 479                                USBDEVNAME(sc->sc_dev), port);
 480 #endif
 481                         continue;
 482                 }
 483
 484 #if 0
 485                 if (UHUB_IS_HIGH_SPEED(sc) && !(status & UPS_HIGH_SPEED)) {
 486                         kprintf("%s: port %d, transaction translation not "
 487                             "implemented, low/full speed device ignored\n",
 488                             USBDEVNAME(sc->sc_dev), port);
 489                         continue;
 490                 }
 491 #endif
 492
 493                 /* Figure out device speed */
 494                 if (status & UPS_HIGH_SPEED)
 495                         speed = USB_SPEED_HIGH;
 496                 else if (status & UPS_LOW_SPEED)
 497                         speed = USB_SPEED_LOW;
 498                 else
 499                         speed = USB_SPEED_FULL;
 500                 /* Get device info and set its address. */
 501                 err = usbd_new_device(sc->sc_dev, dev->bus,
 502                     dev->depth + 1, speed, port, up);
 503                 /* XXX retry a few times? */
 504                 if (err) {
 505                         DPRINTFN(-1,("uhub_explore: usb_new_device failed, "
 506                                      "error=%s\n", usbd_errstr(err)));
 507                         /* Avoid addressing problems by disabling. */
 508                         /* usbd_reset_port(dev, port, &up->status); */
 509
 510                         /*
 511                          * The unit refused to accept a new address, or had
 512                          * some other serious problem.  Since we cannot leave
 513                          * at 0 we have to disable the port instead.
 514                          */
 515                         kprintf("%s: device problem (%s), disabling port %d\n",
 516                                USBDEVNAME(sc->sc_dev), usbd_errstr(err), port);
 517                         usbd_clear_port_feature(dev, port, UHF_PORT_ENABLE);
 518                 } else {
 519                         /* The port set up succeeded, reset error count. */
 520                         up->restartcnt = 0;
 521
 522                         if (up->device->hub)
 523                                 up->device->hub->explore(up->device);
 524                 }
 525         }
 526         return (USBD_NORMAL_COMPLETION);
 527 }
 528
 529 /*
 530  * Called from process context when the hub is gone.
 531  * Detach all devices on active ports.
 532  */
 533 USB_DETACH(uhub)
 534 {
 535         USB_DETACH_START(uhub, sc);
 536         struct usbd_hub *hub = sc->sc_hub->hub;
 537         struct usbd_port *rup;
 538         int port, nports;
 539
 540         DPRINTF(("uhub_detach: sc=%port\n", sc));
 541
 542         crit_enter();
 543
 544         if (hub == NULL) {              /* Must be partially working */
 545                 crit_exit();
 546                 return (0);
 547         }
 548
 549         usbd_abort_pipe(sc->sc_ipipe);
 550         usbd_close_pipe(sc->sc_ipipe);
 551
 552         nports = hub->hubdesc.bNbrPorts;
 553         for(port = 0; port < nports; port++) {
 554                 rup = &hub->ports[port];
 555                 if (rup->device)
 556                         usb_disconnect_port(rup, self);
 557         }
 558
 559         usbd_add_drv_event(USB_EVENT_DRIVER_DETACH, sc->sc_hub,
 560                            sc->sc_dev);
 561
 562         if (hub->ports[0].tt)
 563                 kfree(hub->ports[0].tt, M_USBDEV);
 564         kfree(hub, M_USBDEV);
 565         sc->sc_hub->hub = NULL;
 566
 567         crit_exit();
 568
 569         return (0);
 570 }
 571
 572 int
 573 uhub_child_location_str(device_t cbdev, device_t child, char *buf,
 574     size_t buflen)
 575 {
 576         struct uhub_softc *sc = device_get_softc(cbdev);
 577         usbd_device_handle devhub = sc->sc_hub;
 578         usbd_device_handle dev;
 579         int nports;
 580         int port;
 581         int i;
 582
 583         crit_enter();
 584         nports = devhub->hub->hubdesc.bNbrPorts;
 585         for (port = 0; port < nports; port++) {
 586                 dev = devhub->hub->ports[port].device;
 587                 if (dev && dev->subdevs) {
 588                         for (i = 0; dev->subdevs[i]; i++) {
 589                                 if (dev->subdevs[i] == child) {
 590                                         if (dev->ifacenums == NULL) {
 591                                                 ksnprintf(buf, buflen,
 592                                                     "port=%i", port);
 593                                         } else {
 594                                                 ksnprintf(buf, buflen,
 595                                                     "port=%i interface=%i",
 596                                                     port, dev->ifacenums[i]);
 597                                         }
 598                                         goto found_dev;
 599                                 }
 600                         }
 601                 }
 602         }
 603         DPRINTFN(0,("uhub_child_location_str: device not on hub\n"));
 604         buf[0] = '\0';
 605 found_dev:
 606         crit_exit();
 607         return (0);
 608 }
 609
 610 int
 611 uhub_child_pnpinfo_str(device_t cbdev, device_t child, char *buf,
 612     size_t buflen)
 613 {
 614         struct uhub_softc *sc = device_get_softc(cbdev);
 615         usbd_device_handle devhub = sc->sc_hub;
 616         usbd_device_handle dev;
 617         struct usbd_interface *iface;
 618         char serial[128];
 619         int nports;
 620         int port;
 621         int i;
 622
 623         crit_enter();
 624         nports = devhub->hub->hubdesc.bNbrPorts;
 625         for (port = 0; port < nports; port++) {
 626                 dev = devhub->hub->ports[port].device;
 627                 if (dev && dev->subdevs) {
 628                         for (i = 0; dev->subdevs[i]; i++) {
 629                                 if (dev->subdevs[i] == child) {
 630                                         goto found_dev;
 631                                 }
 632                         }
 633                 }
 634         }
 635         DPRINTFN(0,("uhub_child_pnpinfo_str: device not on hub\n"));
 636         buf[0] = '\0';
 637         crit_exit();
 638         return (0);
 639
 640 found_dev:
 641         /* XXX can sleep */
 642         (void)usbd_get_string(dev, dev->ddesc.iSerialNumber, &serial[0]);
 643         if (dev->ifacenums == NULL) {
 644                 ksnprintf(buf, buflen, "vendor=0x%04x product=0x%04x "
 645                     "devclass=0x%02x devsubclass=0x%02x "
 646                     "release=0x%04x sernum=\"%s\"",
 647                     UGETW(dev->ddesc.idVendor), UGETW(dev->ddesc.idProduct),
 648                     dev->ddesc.bDeviceClass, dev->ddesc.bDeviceSubClass,
 649                     UGETW(dev->ddesc.bcdDevice), serial);
 650         } else {
 651                 iface = &dev->ifaces[dev->ifacenums[i]];
 652                 ksnprintf(buf, buflen, "vendor=0x%04x product=0x%04x "
 653                     "devclass=0x%02x devsubclass=0x%02x "
 654                     "release=0x%04x sernum=\"%s\" "
 655                     "intclass=0x%02x intsubclass=0x%02x",
 656                     UGETW(dev->ddesc.idVendor), UGETW(dev->ddesc.idProduct),
 657                     dev->ddesc.bDeviceClass, dev->ddesc.bDeviceSubClass,
 658                     UGETW(dev->ddesc.bcdDevice), serial,
 659                     iface->idesc->bInterfaceClass,
 660                     iface->idesc->bInterfaceSubClass);
 661         }
 662         crit_exit();
 663         return (0);
 664 }
 665
 666 Static void
 667 uhub_child_detached(device_t self, device_t child)
 668 {
 669         struct uhub_softc *sc = device_get_softc(self);
 670         usbd_device_handle devhub = sc->sc_hub;
 671         usbd_device_handle dev = NULL;
 672         int nports, port, i = 0;
 673
 674         crit_enter();
 675         nports = devhub->hub->hubdesc.bNbrPorts;
 676         for (port = 0; port < nports; port++) {
 677                 dev = devhub->hub->ports[port].device;
 678                 if (dev && dev->subdevs) {
 679                         for (i = 0; dev->subdevs[i]; ++i) {
 680                                 if (dev->subdevs[i] == child)
 681                                         goto found_dev;
 682                         }
 683                 }
 684         }
 685         crit_exit();
 686         return;
 687
 688 found_dev:
 689 #if 0
 690         kprintf("%s: at %s", USBDEVPTRNAME(dev->subdevs[i]),
 691                USBDEVPTRNAME(self));
 692         if (port != 0)
 693                 kprintf(" port %d", port);
 694         kprintf(" (addr %d) disconnected\n", dev->address);
 695 #endif
 696         kfree(device_get_ivars(dev->subdevs[i]), M_USB);
 697         dev->subdevs[i] = NULL;
 698         crit_exit();
 699 }
 700
 701 /*
 702  * Hub interrupt.
 703  * This an indication that some port has changed status.
 704  * Notify the bus event handler thread that we need
 705  * to be explored again.
 706  */
 707 void
 708 uhub_intr(usbd_xfer_handle xfer, usbd_private_handle addr, usbd_status status)
 709 {
 710         struct uhub_softc *sc = addr;
 711
 712         DPRINTFN(5,("uhub_intr: sc=%p\n", sc));
 713         if (status == USBD_STALLED)
 714                 usbd_clear_endpoint_stall_async(sc->sc_ipipe);
 715         else if (status == USBD_NORMAL_COMPLETION)
 716                 usb_needs_explore(sc->sc_hub);
 717 }
 718
 719 DRIVER_MODULE(uhub, usb, uhubroot_driver, uhubroot_devclass, 0, 0);
 720 DRIVER_MODULE(uhub, uhub, uhub_driver, uhub_devclass, usbd_driver_load, 0);