Now available: The Design and Implementation of the FreeBSD Operating System (Second Edition)
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FreeBSD/Linux Kernel Cross Reference
sys/dev/usb/uhub.c
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1 /* $NetBSD: uhub.c,v 1.65.2.2 2004/07/02 17:17:52 he 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@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 1.65.2.2 2004/07/02 17:17:52 he 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 87 Static usbd_status uhub_explore(usbd_device_handle hub); 88 Static void uhub_intr(usbd_xfer_handle, usbd_private_handle,usbd_status); 89 90 #if defined(__FreeBSD__) 91 Static bus_child_detached_t uhub_child_detached; 92 #endif 93 94 95 /* 96 * We need two attachment points: 97 * hub to usb and hub to hub 98 * Every other driver only connects to hubs 99 */ 100 101 #if defined(__NetBSD__) || defined(__OpenBSD__) 102 USB_DECLARE_DRIVER(uhub); 103 104 /* Create the driver instance for the hub connected to hub case */ 105 CFATTACH_DECL(uhub_uhub, sizeof(struct uhub_softc), 106 uhub_match, uhub_attach, uhub_detach, uhub_activate); 107 #elif defined(__FreeBSD__) 108 USB_DECLARE_DRIVER_INIT(uhub, 109 DEVMETHOD(bus_child_detached, uhub_child_detached)); 110 111 /* Create the driver instance for the hub connected to usb case. */ 112 devclass_t uhubroot_devclass; 113 114 Static device_method_t uhubroot_methods[] = { 115 DEVMETHOD(device_probe, uhub_match), 116 DEVMETHOD(device_attach, uhub_attach), 117 118 /* detach is not allowed for a root hub */ 119 {0,0} 120 }; 121 122 Static driver_t uhubroot_driver = { 123 "uhub", 124 uhubroot_methods, 125 sizeof(struct uhub_softc) 126 }; 127 #endif 128 129 USB_MATCH(uhub) 130 { 131 USB_MATCH_START(uhub, uaa); 132 usb_device_descriptor_t *dd = usbd_get_device_descriptor(uaa->device); 133 134 DPRINTFN(5,("uhub_match, dd=%p\n", dd)); 135 /* 136 * The subclass for hubs seems to be 0 for some and 1 for others, 137 * so we just ignore the subclass. 138 */ 139 if (uaa->iface == NULL && dd->bDeviceClass == UDCLASS_HUB) 140 return (UMATCH_DEVCLASS_DEVSUBCLASS); 141 return (UMATCH_NONE); 142 } 143 144 USB_ATTACH(uhub) 145 { 146 USB_ATTACH_START(uhub, sc, uaa); 147 usbd_device_handle dev = uaa->device; 148 char devinfo[1024]; 149 usbd_status err; 150 struct usbd_hub *hub; 151 usb_device_request_t req; 152 usb_hub_descriptor_t hubdesc; 153 int p, port, nports, nremov, pwrdly; 154 usbd_interface_handle iface; 155 usb_endpoint_descriptor_t *ed; 156 157 DPRINTFN(1,("uhub_attach\n")); 158 sc->sc_hub = dev; 159 usbd_devinfo(dev, 1, devinfo); 160 USB_ATTACH_SETUP; 161 printf("%s: %s\n", USBDEVNAME(sc->sc_dev), devinfo); 162 163 err = usbd_set_config_index(dev, 0, 1); 164 if (err) { 165 DPRINTF(("%s: configuration failed, error=%s\n", 166 USBDEVNAME(sc->sc_dev), usbd_errstr(err))); 167 USB_ATTACH_ERROR_RETURN; 168 } 169 170 if (dev->depth > USB_HUB_MAX_DEPTH) { 171 printf("%s: hub depth (%d) exceeded, hub ignored\n", 172 USBDEVNAME(sc->sc_dev), USB_HUB_MAX_DEPTH); 173 USB_ATTACH_ERROR_RETURN; 174 } 175 176 /* Get hub descriptor. */ 177 req.bmRequestType = UT_READ_CLASS_DEVICE; 178 req.bRequest = UR_GET_DESCRIPTOR; 179 USETW2(req.wValue, UDESC_HUB, 0); 180 USETW(req.wIndex, 0); 181 USETW(req.wLength, USB_HUB_DESCRIPTOR_SIZE); 182 DPRINTFN(1,("usb_init_hub: getting hub descriptor\n")); 183 err = usbd_do_request(dev, &req, &hubdesc); 184 nports = hubdesc.bNbrPorts; 185 if (!err && nports > 7) { 186 USETW(req.wLength, USB_HUB_DESCRIPTOR_SIZE + (nports+1) / 8); 187 err = usbd_do_request(dev, &req, &hubdesc); 188 } 189 if (err) { 190 DPRINTF(("%s: getting hub descriptor failed, error=%s\n", 191 USBDEVNAME(sc->sc_dev), usbd_errstr(err))); 192 USB_ATTACH_ERROR_RETURN; 193 } 194 195 for (nremov = 0, port = 1; port <= nports; port++) 196 if (!UHD_NOT_REMOV(&hubdesc, port)) 197 nremov++; 198 printf("%s: %d port%s with %d removable, %s powered\n", 199 USBDEVNAME(sc->sc_dev), nports, nports != 1 ? "s" : "", 200 nremov, dev->self_powered ? "self" : "bus"); 201 202 hub = malloc(sizeof(*hub) + (nports-1) * sizeof(struct usbd_port), 203 M_USBDEV, M_NOWAIT); 204 if (hub == NULL) 205 USB_ATTACH_ERROR_RETURN; 206 dev->hub = hub; 207 dev->hub->hubsoftc = sc; 208 hub->explore = uhub_explore; 209 hub->hubdesc = hubdesc; 210 211 DPRINTFN(1,("usbhub_init_hub: selfpowered=%d, parent=%p, " 212 "parent->selfpowered=%d\n", 213 dev->self_powered, dev->powersrc->parent, 214 dev->powersrc->parent ? 215 dev->powersrc->parent->self_powered : 0)); 216 217 if (!dev->self_powered && dev->powersrc->parent != NULL && 218 !dev->powersrc->parent->self_powered) { 219 printf("%s: bus powered hub connected to bus powered hub, " 220 "ignored\n", USBDEVNAME(sc->sc_dev)); 221 goto bad; 222 } 223 224 /* Set up interrupt pipe. */ 225 err = usbd_device2interface_handle(dev, 0, &iface); 226 if (err) { 227 printf("%s: no interface handle\n", USBDEVNAME(sc->sc_dev)); 228 goto bad; 229 } 230 ed = usbd_interface2endpoint_descriptor(iface, 0); 231 if (ed == NULL) { 232 printf("%s: no endpoint descriptor\n", USBDEVNAME(sc->sc_dev)); 233 goto bad; 234 } 235 if ((ed->bmAttributes & UE_XFERTYPE) != UE_INTERRUPT) { 236 printf("%s: bad interrupt endpoint\n", USBDEVNAME(sc->sc_dev)); 237 goto bad; 238 } 239 240 err = usbd_open_pipe_intr(iface, ed->bEndpointAddress, 241 USBD_SHORT_XFER_OK, &sc->sc_ipipe, sc, sc->sc_status, 242 sizeof(sc->sc_status), uhub_intr, UHUB_INTR_INTERVAL); 243 if (err) { 244 printf("%s: cannot open interrupt pipe\n", 245 USBDEVNAME(sc->sc_dev)); 246 goto bad; 247 } 248 249 /* Wait with power off for a while. */ 250 usbd_delay_ms(dev, USB_POWER_DOWN_TIME); 251 252 usbd_add_drv_event(USB_EVENT_DRIVER_ATTACH, dev, USBDEV(sc->sc_dev)); 253 254 /* 255 * To have the best chance of success we do things in the exact same 256 * order as Windoze98. This should not be necessary, but some 257 * devices do not follow the USB specs to the letter. 258 * 259 * These are the events on the bus when a hub is attached: 260 * Get device and config descriptors (see attach code) 261 * Get hub descriptor (see above) 262 * For all ports 263 * turn on power 264 * wait for power to become stable 265 * (all below happens in explore code) 266 * For all ports 267 * clear C_PORT_CONNECTION 268 * For all ports 269 * get port status 270 * if device connected 271 * wait 100 ms 272 * turn on reset 273 * wait 274 * clear C_PORT_RESET 275 * get port status 276 * proceed with device attachment 277 */ 278 279 /* Set up data structures */ 280 for (p = 0; p < nports; p++) { 281 struct usbd_port *up = &hub->ports[p]; 282 up->device = 0; 283 up->parent = dev; 284 up->portno = p+1; 285 if (dev->self_powered) 286 /* Self powered hub, give ports maximum current. */ 287 up->power = USB_MAX_POWER; 288 else 289 up->power = USB_MIN_POWER; 290 up->restartcnt = 0; 291 } 292 293 /* XXX should check for none, individual, or ganged power? */ 294 295 pwrdly = dev->hub->hubdesc.bPwrOn2PwrGood * UHD_PWRON_FACTOR 296 + USB_EXTRA_POWER_UP_TIME; 297 for (port = 1; port <= nports; port++) { 298 /* Turn the power on. */ 299 err = usbd_set_port_feature(dev, port, UHF_PORT_POWER); 300 if (err) 301 printf("%s: port %d power on failed, %s\n", 302 USBDEVNAME(sc->sc_dev), port, 303 usbd_errstr(err)); 304 DPRINTF(("usb_init_port: turn on port %d power\n", port)); 305 /* Wait for stable power. */ 306 usbd_delay_ms(dev, pwrdly); 307 } 308 309 /* The usual exploration will finish the setup. */ 310 311 sc->sc_running = 1; 312 313 USB_ATTACH_SUCCESS_RETURN; 314 315 bad: 316 free(hub, M_USBDEV); 317 dev->hub = 0; 318 USB_ATTACH_ERROR_RETURN; 319 } 320 321 usbd_status 322 uhub_explore(usbd_device_handle dev) 323 { 324 usb_hub_descriptor_t *hd = &dev->hub->hubdesc; 325 struct uhub_softc *sc = dev->hub->hubsoftc; 326 struct usbd_port *up; 327 usbd_status err; 328 int speed; 329 int port; 330 int change, status; 331 332 DPRINTFN(10, ("uhub_explore dev=%p addr=%d\n", dev, dev->address)); 333 334 if (!sc->sc_running) 335 return (USBD_NOT_STARTED); 336 337 /* Ignore hubs that are too deep. */ 338 if (dev->depth > USB_HUB_MAX_DEPTH) 339 return (USBD_TOO_DEEP); 340 341 for(port = 1; port <= hd->bNbrPorts; port++) { 342 up = &dev->hub->ports[port-1]; 343 err = usbd_get_port_status(dev, port, &up->status); 344 if (err) { 345 DPRINTF(("uhub_explore: get port status failed, " 346 "error=%s\n", usbd_errstr(err))); 347 continue; 348 } 349 status = UGETW(up->status.wPortStatus); 350 change = UGETW(up->status.wPortChange); 351 DPRINTFN(3,("uhub_explore: %s port %d status 0x%04x 0x%04x\n", 352 USBDEVNAME(sc->sc_dev), port, status, change)); 353 if (change & UPS_C_PORT_ENABLED) { 354 DPRINTF(("uhub_explore: C_PORT_ENABLED\n")); 355 usbd_clear_port_feature(dev, port, UHF_C_PORT_ENABLE); 356 if (change & UPS_C_CONNECT_STATUS) { 357 /* Ignore the port error if the device 358 vanished. */ 359 } else if (status & UPS_PORT_ENABLED) { 360 printf("%s: illegal enable change, port %d\n", 361 USBDEVNAME(sc->sc_dev), port); 362 } else { 363 /* Port error condition. */ 364 if (up->restartcnt) /* no message first time */ 365 printf("%s: port error, restarting " 366 "port %d\n", 367 USBDEVNAME(sc->sc_dev), port); 368 369 if (up->restartcnt++ < USBD_RESTART_MAX) 370 goto disco; 371 else 372 printf("%s: port error, giving up " 373 "port %d\n", 374 USBDEVNAME(sc->sc_dev), port); 375 } 376 } 377 if (!(change & UPS_C_CONNECT_STATUS)) { 378 DPRINTFN(3,("uhub_explore: port=%d !C_CONNECT_" 379 "STATUS\n", port)); 380 /* No status change, just do recursive explore. */ 381 if (up->device != NULL && up->device->hub != NULL) 382 up->device->hub->explore(up->device); 383 #if 0 && defined(DIAGNOSTIC) 384 if (up->device == NULL && 385 (status & UPS_CURRENT_CONNECT_STATUS)) 386 printf("%s: connected, no device\n", 387 USBDEVNAME(sc->sc_dev)); 388 #endif 389 continue; 390 } 391 392 /* We have a connect status change, handle it. */ 393 394 DPRINTF(("uhub_explore: status change hub=%d port=%d\n", 395 dev->address, port)); 396 usbd_clear_port_feature(dev, port, UHF_C_PORT_CONNECTION); 397 /*usbd_clear_port_feature(dev, port, UHF_C_PORT_ENABLE);*/ 398 /* 399 * If there is already a device on the port the change status 400 * must mean that is has disconnected. Looking at the 401 * current connect status is not enough to figure this out 402 * since a new unit may have been connected before we handle 403 * the disconnect. 404 */ 405 disco: 406 if (up->device != NULL) { 407 /* Disconnected */ 408 DPRINTF(("uhub_explore: device addr=%d disappeared " 409 "on port %d\n", up->device->address, port)); 410 usb_disconnect_port(up, USBDEV(sc->sc_dev)); 411 usbd_clear_port_feature(dev, port, 412 UHF_C_PORT_CONNECTION); 413 } 414 if (!(status & UPS_CURRENT_CONNECT_STATUS)) { 415 /* Nothing connected, just ignore it. */ 416 DPRINTFN(3,("uhub_explore: port=%d !CURRENT_CONNECT" 417 "_STATUS\n", port)); 418 continue; 419 } 420 421 /* Connected */ 422 423 if (!(status & UPS_PORT_POWER)) 424 printf("%s: strange, connected port %d has no power\n", 425 USBDEVNAME(sc->sc_dev), port); 426 427 /* Wait for maximum device power up time. */ 428 usbd_delay_ms(dev, USB_PORT_POWERUP_DELAY); 429 430 /* Reset port, which implies enabling it. */ 431 if (usbd_reset_port(dev, port, &up->status)) { 432 printf("%s: port %d reset failed\n", 433 USBDEVNAME(sc->sc_dev), port); 434 continue; 435 } 436 /* Get port status again, it might have changed during reset */ 437 err = usbd_get_port_status(dev, port, &up->status); 438 if (err) { 439 DPRINTF(("uhub_explore: get port status failed, " 440 "error=%s\n", usbd_errstr(err))); 441 continue; 442 } 443 status = UGETW(up->status.wPortStatus); 444 change = UGETW(up->status.wPortChange); 445 if (!(status & UPS_CURRENT_CONNECT_STATUS)) { 446 /* Nothing connected, just ignore it. */ 447 #ifdef DIAGNOSTIC 448 printf("%s: port %d, device disappeared after reset\n", 449 USBDEVNAME(sc->sc_dev), port); 450 #endif 451 continue; 452 } 453 454 /* Figure out device speed */ 455 if (status & UPS_HIGH_SPEED) 456 speed = USB_SPEED_HIGH; 457 else if (status & UPS_LOW_SPEED) 458 speed = USB_SPEED_LOW; 459 else 460 speed = USB_SPEED_FULL; 461 /* Get device info and set its address. */ 462 err = usbd_new_device(USBDEV(sc->sc_dev), dev->bus, 463 dev->depth + 1, speed, port, up); 464 /* XXX retry a few times? */ 465 if (err) { 466 DPRINTFN(-1,("uhub_explore: usb_new_device failed, " 467 "error=%s\n", usbd_errstr(err))); 468 /* Avoid addressing problems by disabling. */ 469 /* usbd_reset_port(dev, port, &up->status); */ 470 471 /* 472 * The unit refused to accept a new address, or had 473 * some other serious problem. Since we cannot leave 474 * at 0 we have to disable the port instead. 475 */ 476 printf("%s: device problem, disabling port %d\n", 477 USBDEVNAME(sc->sc_dev), port); 478 usbd_clear_port_feature(dev, port, UHF_PORT_ENABLE); 479 } else { 480 /* The port set up succeeded, reset error count. */ 481 up->restartcnt = 0; 482 483 if (up->device->hub) 484 up->device->hub->explore(up->device); 485 } 486 } 487 return (USBD_NORMAL_COMPLETION); 488 } 489 490 #if defined(__NetBSD__) || defined(__OpenBSD__) 491 int 492 uhub_activate(device_ptr_t self, enum devact act) 493 { 494 struct uhub_softc *sc = (struct uhub_softc *)self; 495 struct usbd_hub *hub = sc->sc_hub->hub; 496 usbd_device_handle dev; 497 int nports, port, i; 498 499 switch (act) { 500 case DVACT_ACTIVATE: 501 return (EOPNOTSUPP); 502 503 case DVACT_DEACTIVATE: 504 if (hub == NULL) /* malfunctioning hub */ 505 break; 506 nports = hub->hubdesc.bNbrPorts; 507 for(port = 0; port < nports; port++) { 508 dev = hub->ports[port].device; 509 if (dev != NULL && dev->subdevs != NULL) { 510 for (i = 0; dev->subdevs[i] != NULL; i++) 511 config_deactivate(dev->subdevs[i]); 512 } 513 } 514 break; 515 } 516 return (0); 517 } 518 #endif 519 520 /* 521 * Called from process context when the hub is gone. 522 * Detach all devices on active ports. 523 */ 524 USB_DETACH(uhub) 525 { 526 USB_DETACH_START(uhub, sc); 527 struct usbd_hub *hub = sc->sc_hub->hub; 528 struct usbd_port *rup; 529 int port, nports; 530 531 #if defined(__NetBSD__) || defined(__OpenBSD__) 532 DPRINTF(("uhub_detach: sc=%p flags=%d\n", sc, flags)); 533 #elif defined(__FreeBSD__) 534 DPRINTF(("uhub_detach: sc=%port\n", sc)); 535 #endif 536 537 if (hub == NULL) /* Must be partially working */ 538 return (0); 539 540 usbd_abort_pipe(sc->sc_ipipe); 541 usbd_close_pipe(sc->sc_ipipe); 542 543 nports = hub->hubdesc.bNbrPorts; 544 for(port = 0; port < nports; port++) { 545 rup = &hub->ports[port]; 546 if (rup->device) 547 usb_disconnect_port(rup, self); 548 } 549 550 usbd_add_drv_event(USB_EVENT_DRIVER_DETACH, sc->sc_hub, 551 USBDEV(sc->sc_dev)); 552 553 free(hub, M_USBDEV); 554 sc->sc_hub->hub = NULL; 555 556 return (0); 557 } 558 559 #if defined(__FreeBSD__) 560 /* Called when a device has been detached from it */ 561 Static void 562 uhub_child_detached(device_t self, device_t child) 563 { 564 struct uhub_softc *sc = device_get_softc(self); 565 usbd_device_handle devhub = sc->sc_hub; 566 usbd_device_handle dev; 567 int nports; 568 int port; 569 int i; 570 571 if (!devhub->hub) 572 /* should never happen; children are only created after init */ 573 panic("hub not fully initialised, but child deleted?"); 574 575 nports = devhub->hub->hubdesc.bNbrPorts; 576 for (port = 0; port < nports; port++) { 577 dev = devhub->hub->ports[port].device; 578 if (dev && dev->subdevs) { 579 for (i = 0; dev->subdevs[i]; i++) { 580 if (dev->subdevs[i] == child) { 581 dev->subdevs[i] = NULL; 582 return; 583 } 584 } 585 } 586 } 587 } 588 #endif 589 590 591 /* 592 * Hub interrupt. 593 * This an indication that some port has changed status. 594 * Notify the bus event handler thread that we need 595 * to be explored again. 596 */ 597 void 598 uhub_intr(usbd_xfer_handle xfer, usbd_private_handle addr, usbd_status status) 599 { 600 struct uhub_softc *sc = addr; 601 602 DPRINTFN(5,("uhub_intr: sc=%p\n", sc)); 603 if (status == USBD_STALLED) 604 usbd_clear_endpoint_stall_async(sc->sc_ipipe); 605 else if (status == USBD_NORMAL_COMPLETION) 606 usb_needs_explore(sc->sc_hub); 607 } 608 609 #if defined(__FreeBSD__) 610 DRIVER_MODULE(uhub, usb, uhubroot_driver, uhubroot_devclass, 0, 0); 611 DRIVER_MODULE(uhub, uhub, uhub_driver, uhub_devclass, usbd_driver_load, 0); 612 #endif
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