uhub.c revision 1.71
1 /* $NetBSD: uhub.c,v 1.71 2004/10/26 05:00:59 augustss Exp $ */ 2 /* $FreeBSD: src/sys/dev/usb/uhub.c,v 1.18 1999/11/17 22:33:43 n_hibma Exp $ */ 3 4 /* 5 * Copyright (c) 1998 The NetBSD Foundation, Inc. 6 * All rights reserved. 7 * 8 * This code is derived from software contributed to The NetBSD Foundation 9 * by Lennart Augustsson (lennart (at) augustsson.net) at 10 * Carlstedt Research & Technology. 11 * 12 * Redistribution and use in source and binary forms, with or without 13 * modification, are permitted provided that the following conditions 14 * are met: 15 * 1. Redistributions of source code must retain the above copyright 16 * notice, this list of conditions and the following disclaimer. 17 * 2. Redistributions in binary form must reproduce the above copyright 18 * notice, this list of conditions and the following disclaimer in the 19 * documentation and/or other materials provided with the distribution. 20 * 3. All advertising materials mentioning features or use of this software 21 * must display the following acknowledgement: 22 * This product includes software developed by the NetBSD 23 * Foundation, Inc. and its contributors. 24 * 4. Neither the name of The NetBSD Foundation nor the names of its 25 * contributors may be used to endorse or promote products derived 26 * from this software without specific prior written permission. 27 * 28 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 29 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 30 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 31 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 32 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 33 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 34 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 35 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 36 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 37 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 38 * POSSIBILITY OF SUCH DAMAGE. 39 */ 40 41 /* 42 * USB spec: http://www.usb.org/developers/docs/usbspec.zip 43 */ 44 45 #include <sys/cdefs.h> 46 __KERNEL_RCSID(0, "$NetBSD: uhub.c,v 1.71 2004/10/26 05:00:59 augustss Exp $"); 47 48 #include <sys/param.h> 49 #include <sys/systm.h> 50 #include <sys/kernel.h> 51 #include <sys/malloc.h> 52 #if defined(__NetBSD__) || defined(__OpenBSD__) 53 #include <sys/device.h> 54 #include <sys/proc.h> 55 #elif defined(__FreeBSD__) 56 #include <sys/module.h> 57 #include <sys/bus.h> 58 #include "bus_if.h" 59 #endif 60 61 #include <machine/bus.h> 62 63 #include <dev/usb/usb.h> 64 #include <dev/usb/usbdi.h> 65 #include <dev/usb/usbdi_util.h> 66 #include <dev/usb/usbdivar.h> 67 68 #define UHUB_INTR_INTERVAL 255 /* ms */ 69 70 #ifdef UHUB_DEBUG 71 #define DPRINTF(x) if (uhubdebug) logprintf x 72 #define DPRINTFN(n,x) if (uhubdebug>(n)) logprintf x 73 int uhubdebug = 0; 74 #else 75 #define DPRINTF(x) 76 #define DPRINTFN(n,x) 77 #endif 78 79 struct uhub_softc { 80 USBBASEDEVICE sc_dev; /* base device */ 81 usbd_device_handle sc_hub; /* USB device */ 82 usbd_pipe_handle sc_ipipe; /* interrupt pipe */ 83 u_int8_t sc_status[1]; /* XXX more ports */ 84 u_char sc_running; 85 }; 86 #define UHUB_PROTO(sc) ((sc)->sc_hub->ddesc.bDeviceProtocol) 87 #define UHUB_IS_HIGH_SPEED(sc) (UHUB_PROTO(sc) != UDPROTO_FSHUB) 88 #define UHUB_IS_SINGLE_TT(sc) (UHUB_PROTO(sc) == UDPROTO_HSHUBSTT) 89 90 Static usbd_status uhub_explore(usbd_device_handle hub); 91 Static void uhub_intr(usbd_xfer_handle, usbd_private_handle,usbd_status); 92 93 #if defined(__FreeBSD__) 94 Static bus_child_detached_t uhub_child_detached; 95 #endif 96 97 98 /* 99 * We need two attachment points: 100 * hub to usb and hub to hub 101 * Every other driver only connects to hubs 102 */ 103 104 #if defined(__NetBSD__) || defined(__OpenBSD__) 105 USB_DECLARE_DRIVER(uhub); 106 107 /* Create the driver instance for the hub connected to hub case */ 108 CFATTACH_DECL(uhub_uhub, sizeof(struct uhub_softc), 109 uhub_match, uhub_attach, uhub_detach, uhub_activate); 110 #elif defined(__FreeBSD__) 111 USB_DECLARE_DRIVER_INIT(uhub, 112 DEVMETHOD(bus_child_detached, uhub_child_detached)); 113 114 /* Create the driver instance for the hub connected to usb case. */ 115 devclass_t uhubroot_devclass; 116 117 Static device_method_t uhubroot_methods[] = { 118 DEVMETHOD(device_probe, uhub_match), 119 DEVMETHOD(device_attach, uhub_attach), 120 121 /* detach is not allowed for a root hub */ 122 {0,0} 123 }; 124 125 Static driver_t uhubroot_driver = { 126 "uhub", 127 uhubroot_methods, 128 sizeof(struct uhub_softc) 129 }; 130 #endif 131 132 USB_MATCH(uhub) 133 { 134 USB_MATCH_START(uhub, uaa); 135 usb_device_descriptor_t *dd = usbd_get_device_descriptor(uaa->device); 136 137 DPRINTFN(5,("uhub_match, dd=%p\n", dd)); 138 /* 139 * The subclass for hubs seems to be 0 for some and 1 for others, 140 * so we just ignore the subclass. 141 */ 142 if (uaa->iface == NULL && dd->bDeviceClass == UDCLASS_HUB) 143 return (UMATCH_DEVCLASS_DEVSUBCLASS); 144 return (UMATCH_NONE); 145 } 146 147 USB_ATTACH(uhub) 148 { 149 USB_ATTACH_START(uhub, sc, uaa); 150 usbd_device_handle dev = uaa->device; 151 char devinfo[1024]; 152 usbd_status err; 153 struct usbd_hub *hub = 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 usbd_devinfo(dev, 1, devinfo, sizeof(devinfo)); 164 USB_ATTACH_SETUP; 165 printf("%s: %s\n", USBDEVNAME(sc->sc_dev), devinfo); 166 167 if (UHUB_IS_HIGH_SPEED(sc)) { 168 printf("%s: %s transaction translator%s\n", 169 USBDEVNAME(sc->sc_dev), 170 UHUB_IS_SINGLE_TT(sc) ? "single" : "multiple", 171 UHUB_IS_SINGLE_TT(sc) ? "" : "s"); 172 } 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 USB_ATTACH_ERROR_RETURN; 179 } 180 181 if (dev->depth > USB_HUB_MAX_DEPTH) { 182 printf("%s: hub depth (%d) exceeded, hub ignored\n", 183 USBDEVNAME(sc->sc_dev), USB_HUB_MAX_DEPTH); 184 USB_ATTACH_ERROR_RETURN; 185 } 186 187 /* Get hub descriptor. */ 188 req.bmRequestType = UT_READ_CLASS_DEVICE; 189 req.bRequest = UR_GET_DESCRIPTOR; 190 USETW2(req.wValue, UDESC_HUB, 0); 191 USETW(req.wIndex, 0); 192 USETW(req.wLength, USB_HUB_DESCRIPTOR_SIZE); 193 DPRINTFN(1,("usb_init_hub: getting hub descriptor\n")); 194 err = usbd_do_request(dev, &req, &hubdesc); 195 nports = hubdesc.bNbrPorts; 196 if (!err && nports > 7) { 197 USETW(req.wLength, USB_HUB_DESCRIPTOR_SIZE + (nports+1) / 8); 198 err = usbd_do_request(dev, &req, &hubdesc); 199 } 200 if (err) { 201 DPRINTF(("%s: getting hub descriptor failed, error=%s\n", 202 USBDEVNAME(sc->sc_dev), usbd_errstr(err))); 203 USB_ATTACH_ERROR_RETURN; 204 } 205 206 for (nremov = 0, port = 1; port <= nports; port++) 207 if (!UHD_NOT_REMOV(&hubdesc, port)) 208 nremov++; 209 printf("%s: %d port%s with %d removable, %s powered\n", 210 USBDEVNAME(sc->sc_dev), nports, nports != 1 ? "s" : "", 211 nremov, dev->self_powered ? "self" : "bus"); 212 213 if (nports == 0) { 214 printf("%s: no ports, hub ignored\n", USBDEVNAME(sc->sc_dev)); 215 goto bad; 216 } 217 218 hub = malloc(sizeof(*hub) + (nports-1) * sizeof(struct usbd_port), 219 M_USBDEV, M_NOWAIT); 220 if (hub == NULL) 221 USB_ATTACH_ERROR_RETURN; 222 dev->hub = hub; 223 dev->hub->hubsoftc = sc; 224 hub->explore = uhub_explore; 225 hub->hubdesc = hubdesc; 226 227 DPRINTFN(1,("usbhub_init_hub: selfpowered=%d, parent=%p, " 228 "parent->selfpowered=%d\n", 229 dev->self_powered, dev->powersrc->parent, 230 dev->powersrc->parent ? 231 dev->powersrc->parent->self_powered : 0)); 232 233 if (!dev->self_powered && dev->powersrc->parent != NULL && 234 !dev->powersrc->parent->self_powered) { 235 printf("%s: bus powered hub connected to bus powered hub, " 236 "ignored\n", USBDEVNAME(sc->sc_dev)); 237 goto bad; 238 } 239 240 /* Set up interrupt pipe. */ 241 err = usbd_device2interface_handle(dev, 0, &iface); 242 if (err) { 243 printf("%s: no interface handle\n", USBDEVNAME(sc->sc_dev)); 244 goto bad; 245 } 246 ed = usbd_interface2endpoint_descriptor(iface, 0); 247 if (ed == NULL) { 248 printf("%s: no endpoint descriptor\n", USBDEVNAME(sc->sc_dev)); 249 goto bad; 250 } 251 if ((ed->bmAttributes & UE_XFERTYPE) != UE_INTERRUPT) { 252 printf("%s: bad interrupt endpoint\n", USBDEVNAME(sc->sc_dev)); 253 goto bad; 254 } 255 256 err = usbd_open_pipe_intr(iface, ed->bEndpointAddress, 257 USBD_SHORT_XFER_OK, &sc->sc_ipipe, sc, sc->sc_status, 258 sizeof(sc->sc_status), uhub_intr, UHUB_INTR_INTERVAL); 259 if (err) { 260 printf("%s: cannot open interrupt pipe\n", 261 USBDEVNAME(sc->sc_dev)); 262 goto bad; 263 } 264 265 /* Wait with power off for a while. */ 266 usbd_delay_ms(dev, USB_POWER_DOWN_TIME); 267 268 usbd_add_drv_event(USB_EVENT_DRIVER_ATTACH, dev, USBDEV(sc->sc_dev)); 269 270 /* 271 * To have the best chance of success we do things in the exact same 272 * order as Windoze98. This should not be necessary, but some 273 * devices do not follow the USB specs to the letter. 274 * 275 * These are the events on the bus when a hub is attached: 276 * Get device and config descriptors (see attach code) 277 * Get hub descriptor (see above) 278 * For all ports 279 * turn on power 280 * wait for power to become stable 281 * (all below happens in explore code) 282 * For all ports 283 * clear C_PORT_CONNECTION 284 * For all ports 285 * get port status 286 * if device connected 287 * wait 100 ms 288 * turn on reset 289 * wait 290 * clear C_PORT_RESET 291 * get port status 292 * proceed with device attachment 293 */ 294 295 if (UHUB_IS_HIGH_SPEED(sc)) { 296 tts = malloc((UHUB_IS_SINGLE_TT(sc) ? 1 : nports) * 297 sizeof (struct usbd_tt), M_USBDEV, M_NOWAIT); 298 if (!tts) 299 goto bad; 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 printf("%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 free(hub, M_USBDEV); 346 dev->hub = NULL; 347 USB_ATTACH_ERROR_RETURN; 348 } 349 350 usbd_status 351 uhub_explore(usbd_device_handle dev) 352 { 353 usb_hub_descriptor_t *hd = &dev->hub->hubdesc; 354 struct uhub_softc *sc = dev->hub->hubsoftc; 355 struct usbd_port *up; 356 usbd_status err; 357 int speed; 358 int port; 359 int change, status; 360 361 DPRINTFN(10, ("uhub_explore dev=%p addr=%d\n", dev, dev->address)); 362 363 if (!sc->sc_running) 364 return (USBD_NOT_STARTED); 365 366 /* Ignore hubs that are too deep. */ 367 if (dev->depth > USB_HUB_MAX_DEPTH) 368 return (USBD_TOO_DEEP); 369 370 for(port = 1; port <= hd->bNbrPorts; port++) { 371 up = &dev->hub->ports[port-1]; 372 err = usbd_get_port_status(dev, port, &up->status); 373 if (err) { 374 DPRINTF(("uhub_explore: get port status failed, " 375 "error=%s\n", usbd_errstr(err))); 376 continue; 377 } 378 status = UGETW(up->status.wPortStatus); 379 change = UGETW(up->status.wPortChange); 380 DPRINTFN(3,("uhub_explore: %s port %d status 0x%04x 0x%04x\n", 381 USBDEVNAME(sc->sc_dev), port, status, change)); 382 if (change & UPS_C_PORT_ENABLED) { 383 DPRINTF(("uhub_explore: C_PORT_ENABLED\n")); 384 usbd_clear_port_feature(dev, port, UHF_C_PORT_ENABLE); 385 if (change & UPS_C_CONNECT_STATUS) { 386 /* Ignore the port error if the device 387 vanished. */ 388 } else if (status & UPS_PORT_ENABLED) { 389 printf("%s: illegal enable change, port %d\n", 390 USBDEVNAME(sc->sc_dev), port); 391 } else { 392 /* Port error condition. */ 393 if (up->restartcnt) /* no message first time */ 394 printf("%s: port error, restarting " 395 "port %d\n", 396 USBDEVNAME(sc->sc_dev), port); 397 398 if (up->restartcnt++ < USBD_RESTART_MAX) 399 goto disco; 400 else 401 printf("%s: port error, giving up " 402 "port %d\n", 403 USBDEVNAME(sc->sc_dev), port); 404 } 405 } 406 if (!(change & UPS_C_CONNECT_STATUS)) { 407 DPRINTFN(3,("uhub_explore: port=%d !C_CONNECT_" 408 "STATUS\n", port)); 409 /* No status change, just do recursive explore. */ 410 if (up->device != NULL && up->device->hub != NULL) 411 up->device->hub->explore(up->device); 412 #if 0 && defined(DIAGNOSTIC) 413 if (up->device == NULL && 414 (status & UPS_CURRENT_CONNECT_STATUS)) 415 printf("%s: connected, no device\n", 416 USBDEVNAME(sc->sc_dev)); 417 #endif 418 continue; 419 } 420 421 /* We have a connect status change, handle it. */ 422 423 DPRINTF(("uhub_explore: status change hub=%d port=%d\n", 424 dev->address, port)); 425 usbd_clear_port_feature(dev, port, UHF_C_PORT_CONNECTION); 426 /*usbd_clear_port_feature(dev, port, UHF_C_PORT_ENABLE);*/ 427 /* 428 * If there is already a device on the port the change status 429 * must mean that is has disconnected. Looking at the 430 * current connect status is not enough to figure this out 431 * since a new unit may have been connected before we handle 432 * the disconnect. 433 */ 434 disco: 435 if (up->device != NULL) { 436 /* Disconnected */ 437 DPRINTF(("uhub_explore: device addr=%d disappeared " 438 "on port %d\n", up->device->address, port)); 439 usb_disconnect_port(up, USBDEV(sc->sc_dev)); 440 usbd_clear_port_feature(dev, port, 441 UHF_C_PORT_CONNECTION); 442 } 443 if (!(status & UPS_CURRENT_CONNECT_STATUS)) { 444 /* Nothing connected, just ignore it. */ 445 DPRINTFN(3,("uhub_explore: port=%d !CURRENT_CONNECT" 446 "_STATUS\n", port)); 447 continue; 448 } 449 450 /* Connected */ 451 452 if (!(status & UPS_PORT_POWER)) 453 printf("%s: strange, connected port %d has no power\n", 454 USBDEVNAME(sc->sc_dev), port); 455 456 /* Wait for maximum device power up time. */ 457 usbd_delay_ms(dev, USB_PORT_POWERUP_DELAY); 458 459 /* Reset port, which implies enabling it. */ 460 if (usbd_reset_port(dev, port, &up->status)) { 461 printf("%s: port %d reset failed\n", 462 USBDEVNAME(sc->sc_dev), port); 463 continue; 464 } 465 /* Get port status again, it might have changed during reset */ 466 err = usbd_get_port_status(dev, port, &up->status); 467 if (err) { 468 DPRINTF(("uhub_explore: get port status failed, " 469 "error=%s\n", usbd_errstr(err))); 470 continue; 471 } 472 status = UGETW(up->status.wPortStatus); 473 change = UGETW(up->status.wPortChange); 474 if (!(status & UPS_CURRENT_CONNECT_STATUS)) { 475 /* Nothing connected, just ignore it. */ 476 #ifdef DIAGNOSTIC 477 printf("%s: port %d, device disappeared after reset\n", 478 USBDEVNAME(sc->sc_dev), port); 479 #endif 480 continue; 481 } 482 483 #if 0 484 if (UHUB_IS_HIGH_SPEED(sc) && !(status & UPS_HIGH_SPEED)) { 485 printf("%s: port %d, transaction translation not " 486 "implemented, low/full speed device ignored\n", 487 USBDEVNAME(sc->sc_dev), port); 488 continue; 489 } 490 #endif 491 492 /* Figure out device speed */ 493 if (status & UPS_HIGH_SPEED) 494 speed = USB_SPEED_HIGH; 495 else if (status & UPS_LOW_SPEED) 496 speed = USB_SPEED_LOW; 497 else 498 speed = USB_SPEED_FULL; 499 /* Get device info and set its address. */ 500 err = usbd_new_device(USBDEV(sc->sc_dev), dev->bus, 501 dev->depth + 1, speed, port, up); 502 /* XXX retry a few times? */ 503 if (err) { 504 DPRINTFN(-1,("uhub_explore: usb_new_device failed, " 505 "error=%s\n", usbd_errstr(err))); 506 /* Avoid addressing problems by disabling. */ 507 /* usbd_reset_port(dev, port, &up->status); */ 508 509 /* 510 * The unit refused to accept a new address, or had 511 * some other serious problem. Since we cannot leave 512 * at 0 we have to disable the port instead. 513 */ 514 printf("%s: device problem, disabling port %d\n", 515 USBDEVNAME(sc->sc_dev), port); 516 usbd_clear_port_feature(dev, port, UHF_PORT_ENABLE); 517 } else { 518 /* The port set up succeeded, reset error count. */ 519 up->restartcnt = 0; 520 521 if (up->device->hub) 522 up->device->hub->explore(up->device); 523 } 524 } 525 return (USBD_NORMAL_COMPLETION); 526 } 527 528 #if defined(__NetBSD__) || defined(__OpenBSD__) 529 int 530 uhub_activate(device_ptr_t self, enum devact act) 531 { 532 struct uhub_softc *sc = (struct uhub_softc *)self; 533 struct usbd_hub *hub = sc->sc_hub->hub; 534 usbd_device_handle dev; 535 int nports, port, i; 536 537 switch (act) { 538 case DVACT_ACTIVATE: 539 return (EOPNOTSUPP); 540 541 case DVACT_DEACTIVATE: 542 if (hub == NULL) /* malfunctioning hub */ 543 break; 544 nports = hub->hubdesc.bNbrPorts; 545 for(port = 0; port < nports; port++) { 546 dev = hub->ports[port].device; 547 if (dev != NULL && dev->subdevs != NULL) { 548 for (i = 0; dev->subdevs[i] != NULL; i++) 549 config_deactivate(dev->subdevs[i]); 550 } 551 } 552 break; 553 } 554 return (0); 555 } 556 #endif 557 558 /* 559 * Called from process context when the hub is gone. 560 * Detach all devices on active ports. 561 */ 562 USB_DETACH(uhub) 563 { 564 USB_DETACH_START(uhub, sc); 565 struct usbd_hub *hub = sc->sc_hub->hub; 566 struct usbd_port *rup; 567 int port, nports; 568 569 #if defined(__NetBSD__) || defined(__OpenBSD__) 570 DPRINTF(("uhub_detach: sc=%p flags=%d\n", sc, flags)); 571 #elif defined(__FreeBSD__) 572 DPRINTF(("uhub_detach: sc=%port\n", sc)); 573 #endif 574 575 if (hub == NULL) /* Must be partially working */ 576 return (0); 577 578 usbd_abort_pipe(sc->sc_ipipe); 579 usbd_close_pipe(sc->sc_ipipe); 580 581 nports = hub->hubdesc.bNbrPorts; 582 for(port = 0; port < nports; port++) { 583 rup = &hub->ports[port]; 584 if (rup->device) 585 usb_disconnect_port(rup, self); 586 } 587 588 usbd_add_drv_event(USB_EVENT_DRIVER_DETACH, sc->sc_hub, 589 USBDEV(sc->sc_dev)); 590 591 if (hub->ports[0].tt) 592 free(hub->ports[0].tt, M_USBDEV); 593 free(hub, M_USBDEV); 594 sc->sc_hub->hub = NULL; 595 596 return (0); 597 } 598 599 #if defined(__FreeBSD__) 600 /* Called when a device has been detached from it */ 601 Static void 602 uhub_child_detached(device_t self, device_t child) 603 { 604 struct uhub_softc *sc = device_get_softc(self); 605 usbd_device_handle devhub = sc->sc_hub; 606 usbd_device_handle dev; 607 int nports; 608 int port; 609 int i; 610 611 if (!devhub->hub) 612 /* should never happen; children are only created after init */ 613 panic("hub not fully initialised, but child deleted?"); 614 615 nports = devhub->hub->hubdesc.bNbrPorts; 616 for (port = 0; port < nports; port++) { 617 dev = devhub->hub->ports[port].device; 618 if (dev && dev->subdevs) { 619 for (i = 0; dev->subdevs[i]; i++) { 620 if (dev->subdevs[i] == child) { 621 dev->subdevs[i] = NULL; 622 return; 623 } 624 } 625 } 626 } 627 } 628 #endif 629 630 631 /* 632 * Hub interrupt. 633 * This an indication that some port has changed status. 634 * Notify the bus event handler thread that we need 635 * to be explored again. 636 */ 637 void 638 uhub_intr(usbd_xfer_handle xfer, usbd_private_handle addr, usbd_status status) 639 { 640 struct uhub_softc *sc = addr; 641 642 DPRINTFN(5,("uhub_intr: sc=%p\n", sc)); 643 if (status == USBD_STALLED) 644 usbd_clear_endpoint_stall_async(sc->sc_ipipe); 645 else if (status == USBD_NORMAL_COMPLETION) 646 usb_needs_explore(sc->sc_hub); 647 } 648 649 #if defined(__FreeBSD__) 650 DRIVER_MODULE(uhub, usb, uhubroot_driver, uhubroot_devclass, 0, 0); 651 DRIVER_MODULE(uhub, uhub, uhub_driver, uhub_devclass, usbd_driver_load, 0); 652 #endif 653
Indexes created Wed Sep 24 05:09:52 GMT 2025