hw/usb/bus.c

   1 #include "hw/hw.h"
   2 #include "hw/usb.h"
   3 #include "hw/qdev.h"
   4 #include "sysemu/sysemu.h"
   5 #include "monitor/monitor.h"
   6 #include "trace.h"
   7
   8 static void usb_bus_dev_print(Monitor *mon, DeviceState *qdev, int indent);
   9
  10 static char *usb_get_dev_path(DeviceState *dev);
  11 static char *usb_get_fw_dev_path(DeviceState *qdev);
  12 static int usb_qdev_exit(DeviceState *qdev);
  13
  14 static Property usb_props[] = {
  15     DEFINE_PROP_STRING("port", USBDevice, port_path),
  16     DEFINE_PROP_STRING("serial", USBDevice, serial),
  17     DEFINE_PROP_BIT("full-path", USBDevice, flags,
  18                     USB_DEV_FLAG_FULL_PATH, true),
  19     DEFINE_PROP_BIT("msos-desc", USBDevice, flags,
  20                     USB_DEV_FLAG_MSOS_DESC_ENABLE, true),
  21     DEFINE_PROP_END_OF_LIST()
  22 };
  23
  24 static void usb_bus_class_init(ObjectClass *klass, void *data)
  25 {
  26     BusClass *k = BUS_CLASS(klass);
  27
  28     k->print_dev = usb_bus_dev_print;
  29     k->get_dev_path = usb_get_dev_path;
  30     k->get_fw_dev_path = usb_get_fw_dev_path;
  31 }
  32
  33 static const TypeInfo usb_bus_info = {
  34     .name = TYPE_USB_BUS,
  35     .parent = TYPE_BUS,
  36     .instance_size = sizeof(USBBus),
  37     .class_init = usb_bus_class_init,
  38 };
  39
  40 static int next_usb_bus = 0;
  41 static QTAILQ_HEAD(, USBBus) busses = QTAILQ_HEAD_INITIALIZER(busses);
  42
  43 static int usb_device_post_load(void *opaque, int version_id)
  44 {
  45     USBDevice *dev = opaque;
  46
  47     if (dev->state == USB_STATE_NOTATTACHED) {
  48         dev->attached = 0;
  49     } else {
  50         dev->attached = 1;
  51     }
  52     if (dev->setup_index >= sizeof(dev->data_buf) ||
  53         dev->setup_len >= sizeof(dev->data_buf)) {
  54         return -EINVAL;
  55     }
  56     return 0;
  57 }
  58
  59 const VMStateDescription vmstate_usb_device = {
  60     .name = "USBDevice",
  61     .version_id = 1,
  62     .minimum_version_id = 1,
  63     .post_load = usb_device_post_load,
  64     .fields = (VMStateField []) {
  65         VMSTATE_UINT8(addr, USBDevice),
  66         VMSTATE_INT32(state, USBDevice),
  67         VMSTATE_INT32(remote_wakeup, USBDevice),
  68         VMSTATE_INT32(setup_state, USBDevice),
  69         VMSTATE_INT32(setup_len, USBDevice),
  70         VMSTATE_INT32(setup_index, USBDevice),
  71         VMSTATE_UINT8_ARRAY(setup_buf, USBDevice, 8),
  72         VMSTATE_END_OF_LIST(),
  73     }
  74 };
  75
  76 void usb_bus_new(USBBus *bus, size_t bus_size,
  77                  USBBusOps *ops, DeviceState *host)
  78 {
  79     qbus_create_inplace(bus, bus_size, TYPE_USB_BUS, host, NULL);
  80     bus->ops = ops;
  81     bus->busnr = next_usb_bus++;
  82     bus->qbus.allow_hotplug = 1; /* Yes, we can */
  83     QTAILQ_INIT(&bus->free);
  84     QTAILQ_INIT(&bus->used);
  85     QTAILQ_INSERT_TAIL(&busses, bus, next);
  86 }
  87
  88 USBBus *usb_bus_find(int busnr)
  89 {
  90     USBBus *bus;
  91
  92     if (-1 == busnr)
  93         return QTAILQ_FIRST(&busses);
  94     QTAILQ_FOREACH(bus, &busses, next) {
  95         if (bus->busnr == busnr)
  96             return bus;
  97     }
  98     return NULL;
  99 }
 100
 101 static int usb_device_init(USBDevice *dev)
 102 {
 103     USBDeviceClass *klass = USB_DEVICE_GET_CLASS(dev);
 104     if (klass->init) {
 105         return klass->init(dev);
 106     }
 107     return 0;
 108 }
 109
 110 USBDevice *usb_device_find_device(USBDevice *dev, uint8_t addr)
 111 {
 112     USBDeviceClass *klass = USB_DEVICE_GET_CLASS(dev);
 113     if (klass->find_device) {
 114         return klass->find_device(dev, addr);
 115     }
 116     return NULL;
 117 }
 118
 119 static void usb_device_handle_destroy(USBDevice *dev)
 120 {
 121     USBDeviceClass *klass = USB_DEVICE_GET_CLASS(dev);
 122     if (klass->handle_destroy) {
 123         klass->handle_destroy(dev);
 124     }
 125 }
 126
 127 void usb_device_cancel_packet(USBDevice *dev, USBPacket *p)
 128 {
 129     USBDeviceClass *klass = USB_DEVICE_GET_CLASS(dev);
 130     if (klass->cancel_packet) {
 131         klass->cancel_packet(dev, p);
 132     }
 133 }
 134
 135 void usb_device_handle_attach(USBDevice *dev)
 136 {
 137     USBDeviceClass *klass = USB_DEVICE_GET_CLASS(dev);
 138     if (klass->handle_attach) {
 139         klass->handle_attach(dev);
 140     }
 141 }
 142
 143 void usb_device_handle_reset(USBDevice *dev)
 144 {
 145     USBDeviceClass *klass = USB_DEVICE_GET_CLASS(dev);
 146     if (klass->handle_reset) {
 147         klass->handle_reset(dev);
 148     }
 149 }
 150
 151 void usb_device_handle_control(USBDevice *dev, USBPacket *p, int request,
 152                                int value, int index, int length, uint8_t *data)
 153 {
 154     USBDeviceClass *klass = USB_DEVICE_GET_CLASS(dev);
 155     if (klass->handle_control) {
 156         klass->handle_control(dev, p, request, value, index, length, data);
 157     }
 158 }
 159
 160 void usb_device_handle_data(USBDevice *dev, USBPacket *p)
 161 {
 162     USBDeviceClass *klass = USB_DEVICE_GET_CLASS(dev);
 163     if (klass->handle_data) {
 164         klass->handle_data(dev, p);
 165     }
 166 }
 167
 168 const char *usb_device_get_product_desc(USBDevice *dev)
 169 {
 170     USBDeviceClass *klass = USB_DEVICE_GET_CLASS(dev);
 171     return klass->product_desc;
 172 }
 173
 174 const USBDesc *usb_device_get_usb_desc(USBDevice *dev)
 175 {
 176     USBDeviceClass *klass = USB_DEVICE_GET_CLASS(dev);
 177     if (dev->usb_desc) {
 178         return dev->usb_desc;
 179     }
 180     return klass->usb_desc;
 181 }
 182
 183 void usb_device_set_interface(USBDevice *dev, int interface,
 184                               int alt_old, int alt_new)
 185 {
 186     USBDeviceClass *klass = USB_DEVICE_GET_CLASS(dev);
 187     if (klass->set_interface) {
 188         klass->set_interface(dev, interface, alt_old, alt_new);
 189     }
 190 }
 191
 192 void usb_device_flush_ep_queue(USBDevice *dev, USBEndpoint *ep)
 193 {
 194     USBDeviceClass *klass = USB_DEVICE_GET_CLASS(dev);
 195     if (klass->flush_ep_queue) {
 196         klass->flush_ep_queue(dev, ep);
 197     }
 198 }
 199
 200 void usb_device_ep_stopped(USBDevice *dev, USBEndpoint *ep)
 201 {
 202     USBDeviceClass *klass = USB_DEVICE_GET_CLASS(dev);
 203     if (klass->ep_stopped) {
 204         klass->ep_stopped(dev, ep);
 205     }
 206 }
 207
 208 int usb_device_alloc_streams(USBDevice *dev, USBEndpoint **eps, int nr_eps,
 209                              int streams)
 210 {
 211     USBDeviceClass *klass = USB_DEVICE_GET_CLASS(dev);
 212     if (klass->alloc_streams) {
 213         return klass->alloc_streams(dev, eps, nr_eps, streams);
 214     }
 215     return 0;
 216 }
 217
 218 void usb_device_free_streams(USBDevice *dev, USBEndpoint **eps, int nr_eps)
 219 {
 220     USBDeviceClass *klass = USB_DEVICE_GET_CLASS(dev);
 221     if (klass->free_streams) {
 222         klass->free_streams(dev, eps, nr_eps);
 223     }
 224 }
 225
 226 static int usb_qdev_init(DeviceState *qdev)
 227 {
 228     USBDevice *dev = USB_DEVICE(qdev);
 229     int rc;
 230
 231     pstrcpy(dev->product_desc, sizeof(dev->product_desc),
 232             usb_device_get_product_desc(dev));
 233     dev->auto_attach = 1;
 234     QLIST_INIT(&dev->strings);
 235     usb_ep_init(dev);
 236     rc = usb_claim_port(dev);
 237     if (rc != 0) {
 238         return rc;
 239     }
 240     rc = usb_device_init(dev);
 241     if (rc != 0) {
 242         usb_release_port(dev);
 243         return rc;
 244     }
 245     if (dev->auto_attach) {
 246         rc = usb_device_attach(dev);
 247         if (rc != 0) {
 248             usb_qdev_exit(qdev);
 249             return rc;
 250         }
 251     }
 252     return 0;
 253 }
 254
 255 static int usb_qdev_exit(DeviceState *qdev)
 256 {
 257     USBDevice *dev = USB_DEVICE(qdev);
 258
 259     if (dev->attached) {
 260         usb_device_detach(dev);
 261     }
 262     usb_device_handle_destroy(dev);
 263     if (dev->port) {
 264         usb_release_port(dev);
 265     }
 266     return 0;
 267 }
 268
 269 typedef struct LegacyUSBFactory
 270 {
 271     const char *name;
 272     const char *usbdevice_name;
 273     USBDevice *(*usbdevice_init)(USBBus *bus, const char *params);
 274 } LegacyUSBFactory;
 275
 276 static GSList *legacy_usb_factory;
 277
 278 void usb_legacy_register(const char *typename, const char *usbdevice_name,
 279                          USBDevice *(*usbdevice_init)(USBBus *bus,
 280                                                       const char *params))
 281 {
 282     if (usbdevice_name) {
 283         LegacyUSBFactory *f = g_malloc0(sizeof(*f));
 284         f->name = typename;
 285         f->usbdevice_name = usbdevice_name;
 286         f->usbdevice_init = usbdevice_init;
 287         legacy_usb_factory = g_slist_append(legacy_usb_factory, f);
 288     }
 289 }
 290
 291 USBDevice *usb_create(USBBus *bus, const char *name)
 292 {
 293     DeviceState *dev;
 294
 295     dev = qdev_create(&bus->qbus, name);
 296     return USB_DEVICE(dev);
 297 }
 298
 299 USBDevice *usb_create_simple(USBBus *bus, const char *name)
 300 {
 301     USBDevice *dev = usb_create(bus, name);
 302     int rc;
 303
 304     if (!dev) {
 305         error_report("Failed to create USB device '%s'", name);
 306         return NULL;
 307     }
 308     rc = qdev_init(&dev->qdev);
 309     if (rc < 0) {
 310         error_report("Failed to initialize USB device '%s'", name);
 311         return NULL;
 312     }
 313     return dev;
 314 }
 315
 316 static void usb_fill_port(USBPort *port, void *opaque, int index,
 317                           USBPortOps *ops, int speedmask)
 318 {
 319     port->opaque = opaque;
 320     port->index = index;
 321     port->ops = ops;
 322     port->speedmask = speedmask;
 323     usb_port_location(port, NULL, index + 1);
 324 }
 325
 326 void usb_register_port(USBBus *bus, USBPort *port, void *opaque, int index,
 327                        USBPortOps *ops, int speedmask)
 328 {
 329     usb_fill_port(port, opaque, index, ops, speedmask);
 330     QTAILQ_INSERT_TAIL(&bus->free, port, next);
 331     bus->nfree++;
 332 }
 333
 334 int usb_register_companion(const char *masterbus, USBPort *ports[],
 335                            uint32_t portcount, uint32_t firstport,
 336                            void *opaque, USBPortOps *ops, int speedmask)
 337 {
 338     USBBus *bus;
 339     int i;
 340
 341     QTAILQ_FOREACH(bus, &busses, next) {
 342         if (strcmp(bus->qbus.name, masterbus) == 0) {
 343             break;
 344         }
 345     }
 346
 347     if (!bus || !bus->ops->register_companion) {
 348         qerror_report(QERR_INVALID_PARAMETER_VALUE, "masterbus",
 349                       "an USB masterbus");
 350         if (bus) {
 351             error_printf_unless_qmp(
 352                 "USB bus '%s' does not allow companion controllers\n",
 353                 masterbus);
 354         }
 355         return -1;
 356     }
 357
 358     for (i = 0; i < portcount; i++) {
 359         usb_fill_port(ports[i], opaque, i, ops, speedmask);
 360     }
 361
 362     return bus->ops->register_companion(bus, ports, portcount, firstport);
 363 }
 364
 365 void usb_port_location(USBPort *downstream, USBPort *upstream, int portnr)
 366 {
 367     if (upstream) {
 368         snprintf(downstream->path, sizeof(downstream->path), "%s.%d",
 369                  upstream->path, portnr);
 370         downstream->hubcount = upstream->hubcount + 1;
 371     } else {
 372         snprintf(downstream->path, sizeof(downstream->path), "%d", portnr);
 373         downstream->hubcount = 0;
 374     }
 375 }
 376
 377 void usb_unregister_port(USBBus *bus, USBPort *port)
 378 {
 379     if (port->dev) {
 380         object_unparent(OBJECT(port->dev));
 381     }
 382     QTAILQ_REMOVE(&bus->free, port, next);
 383     bus->nfree--;
 384 }
 385
 386 int usb_claim_port(USBDevice *dev)
 387 {
 388     USBBus *bus = usb_bus_from_device(dev);
 389     USBPort *port;
 390
 391     assert(dev->port == NULL);
 392
 393     if (dev->port_path) {
 394         QTAILQ_FOREACH(port, &bus->free, next) {
 395             if (strcmp(port->path, dev->port_path) == 0) {
 396                 break;
 397             }
 398         }
 399         if (port == NULL) {
 400             error_report("Error: usb port %s (bus %s) not found (in use?)",
 401                          dev->port_path, bus->qbus.name);
 402             return -1;
 403         }
 404     } else {
 405         if (bus->nfree == 1 && strcmp(object_get_typename(OBJECT(dev)), "usb-hub") != 0) {
 406             /* Create a new hub and chain it on */
 407             usb_create_simple(bus, "usb-hub");
 408         }
 409         if (bus->nfree == 0) {
 410             error_report("Error: tried to attach usb device %s to a bus "
 411                          "with no free ports", dev->product_desc);
 412             return -1;
 413         }
 414         port = QTAILQ_FIRST(&bus->free);
 415     }
 416     trace_usb_port_claim(bus->busnr, port->path);
 417
 418     QTAILQ_REMOVE(&bus->free, port, next);
 419     bus->nfree--;
 420
 421     dev->port = port;
 422     port->dev = dev;
 423
 424     QTAILQ_INSERT_TAIL(&bus->used, port, next);
 425     bus->nused++;
 426     return 0;
 427 }
 428
 429 void usb_release_port(USBDevice *dev)
 430 {
 431     USBBus *bus = usb_bus_from_device(dev);
 432     USBPort *port = dev->port;
 433
 434     assert(port != NULL);
 435     trace_usb_port_release(bus->busnr, port->path);
 436
 437     QTAILQ_REMOVE(&bus->used, port, next);
 438     bus->nused--;
 439
 440     dev->port = NULL;
 441     port->dev = NULL;
 442
 443     QTAILQ_INSERT_TAIL(&bus->free, port, next);
 444     bus->nfree++;
 445 }
 446
 447 static void usb_mask_to_str(char *dest, size_t size,
 448                             unsigned int speedmask)
 449 {
 450     static const struct {
 451         unsigned int mask;
 452         const char *name;
 453     } speeds[] = {
 454         { .mask = USB_SPEED_MASK_FULL,  .name = "full"  },
 455         { .mask = USB_SPEED_MASK_HIGH,  .name = "high"  },
 456         { .mask = USB_SPEED_MASK_SUPER, .name = "super" },
 457     };
 458     int i, pos = 0;
 459
 460     for (i = 0; i < ARRAY_SIZE(speeds); i++) {
 461         if (speeds[i].mask & speedmask) {
 462             pos += snprintf(dest + pos, size - pos, "%s%s",
 463                             pos ? "+" : "",
 464                             speeds[i].name);
 465         }
 466     }
 467 }
 468
 469 int usb_device_attach(USBDevice *dev)
 470 {
 471     USBBus *bus = usb_bus_from_device(dev);
 472     USBPort *port = dev->port;
 473     char devspeed[32], portspeed[32];
 474
 475     assert(port != NULL);
 476     assert(!dev->attached);
 477     usb_mask_to_str(devspeed, sizeof(devspeed), dev->speedmask);
 478     usb_mask_to_str(portspeed, sizeof(portspeed), port->speedmask);
 479     trace_usb_port_attach(bus->busnr, port->path,
 480                           devspeed, portspeed);
 481
 482     if (!(port->speedmask & dev->speedmask)) {
 483         error_report("Warning: speed mismatch trying to attach"
 484                      " usb device \"%s\" (%s speed)"
 485                      " to bus \"%s\", port \"%s\" (%s speed)",
 486                      dev->product_desc, devspeed,
 487                      bus->qbus.name, port->path, portspeed);
 488         return -1;
 489     }
 490
 491     dev->attached++;
 492     usb_attach(port);
 493
 494     return 0;
 495 }
 496
 497 int usb_device_detach(USBDevice *dev)
 498 {
 499     USBBus *bus = usb_bus_from_device(dev);
 500     USBPort *port = dev->port;
 501
 502     assert(port != NULL);
 503     assert(dev->attached);
 504     trace_usb_port_detach(bus->busnr, port->path);
 505
 506     usb_detach(port);
 507     dev->attached--;
 508     return 0;
 509 }
 510
 511 int usb_device_delete_addr(int busnr, int addr)
 512 {
 513     USBBus *bus;
 514     USBPort *port;
 515     USBDevice *dev;
 516
 517     bus = usb_bus_find(busnr);
 518     if (!bus)
 519         return -1;
 520
 521     QTAILQ_FOREACH(port, &bus->used, next) {
 522         if (port->dev->addr == addr)
 523             break;
 524     }
 525     if (!port)
 526         return -1;
 527     dev = port->dev;
 528
 529     object_unparent(OBJECT(dev));
 530     return 0;
 531 }
 532
 533 static const char *usb_speed(unsigned int speed)
 534 {
 535     static const char *txt[] = {
 536         [ USB_SPEED_LOW  ] = "1.5",
 537         [ USB_SPEED_FULL ] = "12",
 538         [ USB_SPEED_HIGH ] = "480",
 539         [ USB_SPEED_SUPER ] = "5000",
 540     };
 541     if (speed >= ARRAY_SIZE(txt))
 542         return "?";
 543     return txt[speed];
 544 }
 545
 546 static void usb_bus_dev_print(Monitor *mon, DeviceState *qdev, int indent)
 547 {
 548     USBDevice *dev = USB_DEVICE(qdev);
 549     USBBus *bus = usb_bus_from_device(dev);
 550
 551     monitor_printf(mon, "%*saddr %d.%d, port %s, speed %s, name %s%s\n",
 552                    indent, "", bus->busnr, dev->addr,
 553                    dev->port ? dev->port->path : "-",
 554                    usb_speed(dev->speed), dev->product_desc,
 555                    dev->attached ? ", attached" : "");
 556 }
 557
 558 static char *usb_get_dev_path(DeviceState *qdev)
 559 {
 560     USBDevice *dev = USB_DEVICE(qdev);
 561     DeviceState *hcd = qdev->parent_bus->parent;
 562     char *id = NULL;
 563
 564     if (dev->flags & (1 << USB_DEV_FLAG_FULL_PATH)) {
 565         id = qdev_get_dev_path(hcd);
 566     }
 567     if (id) {
 568         char *ret = g_strdup_printf("%s/%s", id, dev->port->path);
 569         g_free(id);
 570         return ret;
 571     } else {
 572         return g_strdup(dev->port->path);
 573     }
 574 }
 575
 576 static char *usb_get_fw_dev_path(DeviceState *qdev)
 577 {
 578     USBDevice *dev = USB_DEVICE(qdev);
 579     char *fw_path, *in;
 580     ssize_t pos = 0, fw_len;
 581     long nr;
 582
 583     fw_len = 32 + strlen(dev->port->path) * 6;
 584     fw_path = g_malloc(fw_len);
 585     in = dev->port->path;
 586     while (fw_len - pos > 0) {
 587         nr = strtol(in, &in, 10);
 588         if (in[0] == '.') {
 589             /* some hub between root port and device */
 590             pos += snprintf(fw_path + pos, fw_len - pos, "hub@%ld/", nr);
 591             in++;
 592         } else {
 593             /* the device itself */
 594             pos += snprintf(fw_path + pos, fw_len - pos, "%s@%ld",
 595                             qdev_fw_name(qdev), nr);
 596             break;
 597         }
 598     }
 599     return fw_path;
 600 }
 601
 602 void usb_info(Monitor *mon, const QDict *qdict)
 603 {
 604     USBBus *bus;
 605     USBDevice *dev;
 606     USBPort *port;
 607
 608     if (QTAILQ_EMPTY(&busses)) {
 609         monitor_printf(mon, "USB support not enabled\n");
 610         return;
 611     }
 612
 613     QTAILQ_FOREACH(bus, &busses, next) {
 614         QTAILQ_FOREACH(port, &bus->used, next) {
 615             dev = port->dev;
 616             if (!dev)
 617                 continue;
 618             monitor_printf(mon, "  Device %d.%d, Port %s, Speed %s Mb/s, Product %s\n",
 619                            bus->busnr, dev->addr, port->path, usb_speed(dev->speed),
 620                            dev->product_desc);
 621         }
 622     }
 623 }
 624
 625 /* handle legacy -usbdevice cmd line option */
 626 USBDevice *usbdevice_create(const char *cmdline)
 627 {
 628     USBBus *bus = usb_bus_find(-1 /* any */);
 629     LegacyUSBFactory *f = NULL;
 630     GSList *i;
 631     char driver[32];
 632     const char *params;
 633     int len;
 634
 635     params = strchr(cmdline,':');
 636     if (params) {
 637         params++;
 638         len = params - cmdline;
 639         if (len > sizeof(driver))
 640             len = sizeof(driver);
 641         pstrcpy(driver, len, cmdline);
 642     } else {
 643         params = "";
 644         pstrcpy(driver, sizeof(driver), cmdline);
 645     }
 646
 647     for (i = legacy_usb_factory; i; i = i->next) {
 648         f = i->data;
 649         if (strcmp(f->usbdevice_name, driver) == 0) {
 650             break;
 651         }
 652     }
 653     if (i == NULL) {
 654 #if 0
 655         /* no error because some drivers are not converted (yet) */
 656         error_report("usbdevice %s not found", driver);
 657 #endif
 658         return NULL;
 659     }
 660
 661     if (!bus) {
 662         error_report("Error: no usb bus to attach usbdevice %s, "
 663                      "please try -machine usb=on and check that "
 664                      "the machine model supports USB", driver);
 665         return NULL;
 666     }
 667
 668     if (!f->usbdevice_init) {
 669         if (*params) {
 670             error_report("usbdevice %s accepts no params", driver);
 671             return NULL;
 672         }
 673         return usb_create_simple(bus, f->name);
 674     }
 675     return f->usbdevice_init(bus, params);
 676 }
 677
 678 static void usb_device_class_init(ObjectClass *klass, void *data)
 679 {
 680     DeviceClass *k = DEVICE_CLASS(klass);
 681     k->bus_type = TYPE_USB_BUS;
 682     k->init     = usb_qdev_init;
 683     k->unplug   = qdev_simple_unplug_cb;
 684     k->exit     = usb_qdev_exit;
 685     k->props    = usb_props;
 686 }
 687
 688 static const TypeInfo usb_device_type_info = {
 689     .name = TYPE_USB_DEVICE,
 690     .parent = TYPE_DEVICE,
 691     .instance_size = sizeof(USBDevice),
 692     .abstract = true,
 693     .class_size = sizeof(USBDeviceClass),
 694     .class_init = usb_device_class_init,
 695 };
 696
 697 static void usb_register_types(void)
 698 {
 699     type_register_static(&usb_bus_info);
 700     type_register_static(&usb_device_type_info);
 701 }
 702
 703 type_init(usb_register_types)