hw/usb/dev-hub.c

   1 /*
   2  * QEMU USB HUB emulation
   3  *
   4  * Copyright (c) 2005 Fabrice Bellard
   5  *
   6  * Permission is hereby granted, free of charge, to any person obtaining a copy
   7  * of this software and associated documentation files (the "Software"), to deal
   8  * in the Software without restriction, including without limitation the rights
   9  * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
  10  * copies of the Software, and to permit persons to whom the Software is
  11  * furnished to do so, subject to the following conditions:
  12  *
  13  * The above copyright notice and this permission notice shall be included in
  14  * all copies or substantial portions of the Software.
  15  *
  16  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  17  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  18  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
  19  * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  20  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
  21  * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
  22  * THE SOFTWARE.
  23  */
  24
  25 #include "qemu/osdep.h"
  26 #include "qapi/error.h"
  27 #include "qemu/timer.h"
  28 #include "trace.h"
  29 #include "hw/qdev-properties.h"
  30 #include "hw/usb.h"
  31 #include "migration/vmstate.h"
  32 #include "desc.h"
  33 #include "qemu/error-report.h"
  34 #include "qemu/module.h"
  35 #include "qom/object.h"
  36
  37 #define MAX_PORTS 8
  38
  39 typedef struct USBHubPort {
  40     USBPort port;
  41     uint16_t wPortStatus;
  42     uint16_t wPortChange;
  43 } USBHubPort;
  44
  45 struct USBHubState {
  46     USBDevice dev;
  47     USBEndpoint *intr;
  48     uint32_t num_ports;
  49     bool port_power;
  50     QEMUTimer *port_timer;
  51     USBHubPort ports[MAX_PORTS];
  52 };
  53 typedef struct USBHubState USBHubState;
  54
  55 #define TYPE_USB_HUB "usb-hub"
  56 DECLARE_INSTANCE_CHECKER(USBHubState, USB_HUB,
  57                          TYPE_USB_HUB)
  58
  59 #define ClearHubFeature         (0x2000 | USB_REQ_CLEAR_FEATURE)
  60 #define ClearPortFeature        (0x2300 | USB_REQ_CLEAR_FEATURE)
  61 #define GetHubDescriptor        (0xa000 | USB_REQ_GET_DESCRIPTOR)
  62 #define GetHubStatus            (0xa000 | USB_REQ_GET_STATUS)
  63 #define GetPortStatus           (0xa300 | USB_REQ_GET_STATUS)
  64 #define SetHubFeature           (0x2000 | USB_REQ_SET_FEATURE)
  65 #define SetPortFeature          (0x2300 | USB_REQ_SET_FEATURE)
  66
  67 #define PORT_STAT_CONNECTION    0x0001
  68 #define PORT_STAT_ENABLE        0x0002
  69 #define PORT_STAT_SUSPEND       0x0004
  70 #define PORT_STAT_OVERCURRENT   0x0008
  71 #define PORT_STAT_RESET         0x0010
  72 #define PORT_STAT_POWER         0x0100
  73 #define PORT_STAT_LOW_SPEED     0x0200
  74 #define PORT_STAT_HIGH_SPEED    0x0400
  75 #define PORT_STAT_TEST          0x0800
  76 #define PORT_STAT_INDICATOR     0x1000
  77
  78 #define PORT_STAT_C_CONNECTION  0x0001
  79 #define PORT_STAT_C_ENABLE      0x0002
  80 #define PORT_STAT_C_SUSPEND     0x0004
  81 #define PORT_STAT_C_OVERCURRENT 0x0008
  82 #define PORT_STAT_C_RESET       0x0010
  83
  84 #define PORT_CONNECTION         0
  85 #define PORT_ENABLE             1
  86 #define PORT_SUSPEND            2
  87 #define PORT_OVERCURRENT        3
  88 #define PORT_RESET              4
  89 #define PORT_POWER              8
  90 #define PORT_LOWSPEED           9
  91 #define PORT_HIGHSPEED          10
  92 #define PORT_C_CONNECTION       16
  93 #define PORT_C_ENABLE           17
  94 #define PORT_C_SUSPEND          18
  95 #define PORT_C_OVERCURRENT      19
  96 #define PORT_C_RESET            20
  97 #define PORT_TEST               21
  98 #define PORT_INDICATOR          22
  99
 100 /* same as Linux kernel root hubs */
 101
 102 enum {
 103     STR_MANUFACTURER = 1,
 104     STR_PRODUCT,
 105     STR_SERIALNUMBER,
 106 };
 107
 108 static const USBDescStrings desc_strings = {
 109     [STR_MANUFACTURER] = "QEMU",
 110     [STR_PRODUCT]      = "QEMU USB Hub",
 111     [STR_SERIALNUMBER] = "314159",
 112 };
 113
 114 static const USBDescIface desc_iface_hub = {
 115     .bInterfaceNumber              = 0,
 116     .bNumEndpoints                 = 1,
 117     .bInterfaceClass               = USB_CLASS_HUB,
 118     .eps = (USBDescEndpoint[]) {
 119         {
 120             .bEndpointAddress      = USB_DIR_IN | 0x01,
 121             .bmAttributes          = USB_ENDPOINT_XFER_INT,
 122             .wMaxPacketSize        = 1 + DIV_ROUND_UP(MAX_PORTS, 8),
 123             .bInterval             = 0xff,
 124         },
 125     }
 126 };
 127
 128 static const USBDescDevice desc_device_hub = {
 129     .bcdUSB                        = 0x0110,
 130     .bDeviceClass                  = USB_CLASS_HUB,
 131     .bMaxPacketSize0               = 8,
 132     .bNumConfigurations            = 1,
 133     .confs = (USBDescConfig[]) {
 134         {
 135             .bNumInterfaces        = 1,
 136             .bConfigurationValue   = 1,
 137             .bmAttributes          = USB_CFG_ATT_ONE | USB_CFG_ATT_SELFPOWER |
 138                                      USB_CFG_ATT_WAKEUP,
 139             .nif = 1,
 140             .ifs = &desc_iface_hub,
 141         },
 142     },
 143 };
 144
 145 static const USBDesc desc_hub = {
 146     .id = {
 147         .idVendor          = 0x0409,
 148         .idProduct         = 0x55aa,
 149         .bcdDevice         = 0x0101,
 150         .iManufacturer     = STR_MANUFACTURER,
 151         .iProduct          = STR_PRODUCT,
 152         .iSerialNumber     = STR_SERIALNUMBER,
 153     },
 154     .full = &desc_device_hub,
 155     .str  = desc_strings,
 156 };
 157
 158 static const uint8_t qemu_hub_hub_descriptor[] =
 159 {
 160         0x00,                   /*  u8  bLength; patched in later */
 161         0x29,                   /*  u8  bDescriptorType; Hub-descriptor */
 162         0x00,                   /*  u8  bNbrPorts; (patched later) */
 163         0x0a,                   /* u16  wHubCharacteristics; */
 164         0x00,                   /*   (per-port OC, no power switching) */
 165         0x01,                   /*  u8  bPwrOn2pwrGood; 2ms */
 166         0x00                    /*  u8  bHubContrCurrent; 0 mA */
 167
 168         /* DeviceRemovable and PortPwrCtrlMask patched in later */
 169 };
 170
 171 static bool usb_hub_port_change(USBHubPort *port, uint16_t status)
 172 {
 173     bool notify = false;
 174
 175     if (status & 0x1f) {
 176         port->wPortChange |= status;
 177         notify = true;
 178     }
 179     return notify;
 180 }
 181
 182 static bool usb_hub_port_set(USBHubPort *port, uint16_t status)
 183 {
 184     if (port->wPortStatus & status) {
 185         return false;
 186     }
 187     port->wPortStatus |= status;
 188     return usb_hub_port_change(port, status);
 189 }
 190
 191 static bool usb_hub_port_clear(USBHubPort *port, uint16_t status)
 192 {
 193     if (!(port->wPortStatus & status)) {
 194         return false;
 195     }
 196     port->wPortStatus &= ~status;
 197     return usb_hub_port_change(port, status);
 198 }
 199
 200 static bool usb_hub_port_update(USBHubPort *port)
 201 {
 202     bool notify = false;
 203
 204     if (port->port.dev && port->port.dev->attached) {
 205         notify = usb_hub_port_set(port, PORT_STAT_CONNECTION);
 206         if (port->port.dev->speed == USB_SPEED_LOW) {
 207             usb_hub_port_set(port, PORT_STAT_LOW_SPEED);
 208         } else {
 209             usb_hub_port_clear(port, PORT_STAT_LOW_SPEED);
 210         }
 211     }
 212     return notify;
 213 }
 214
 215 static void usb_hub_port_update_timer(void *opaque)
 216 {
 217     USBHubState *s = opaque;
 218     bool notify = false;
 219     int i;
 220
 221     for (i = 0; i < s->num_ports; i++) {
 222         notify |= usb_hub_port_update(&s->ports[i]);
 223     }
 224     if (notify) {
 225         usb_wakeup(s->intr, 0);
 226     }
 227 }
 228
 229 static void usb_hub_attach(USBPort *port1)
 230 {
 231     USBHubState *s = port1->opaque;
 232     USBHubPort *port = &s->ports[port1->index];
 233
 234     trace_usb_hub_attach(s->dev.addr, port1->index + 1);
 235     usb_hub_port_update(port);
 236     usb_wakeup(s->intr, 0);
 237 }
 238
 239 static void usb_hub_detach(USBPort *port1)
 240 {
 241     USBHubState *s = port1->opaque;
 242     USBHubPort *port = &s->ports[port1->index];
 243
 244     trace_usb_hub_detach(s->dev.addr, port1->index + 1);
 245     usb_wakeup(s->intr, 0);
 246
 247     /* Let upstream know the device on this port is gone */
 248     s->dev.port->ops->child_detach(s->dev.port, port1->dev);
 249
 250     usb_hub_port_clear(port, PORT_STAT_CONNECTION);
 251     usb_hub_port_clear(port, PORT_STAT_ENABLE);
 252     usb_hub_port_clear(port, PORT_STAT_SUSPEND);
 253     usb_wakeup(s->intr, 0);
 254 }
 255
 256 static void usb_hub_child_detach(USBPort *port1, USBDevice *child)
 257 {
 258     USBHubState *s = port1->opaque;
 259
 260     /* Pass along upstream */
 261     s->dev.port->ops->child_detach(s->dev.port, child);
 262 }
 263
 264 static void usb_hub_wakeup(USBPort *port1)
 265 {
 266     USBHubState *s = port1->opaque;
 267     USBHubPort *port = &s->ports[port1->index];
 268
 269     if (usb_hub_port_clear(port, PORT_STAT_SUSPEND)) {
 270         usb_wakeup(s->intr, 0);
 271     }
 272 }
 273
 274 static void usb_hub_complete(USBPort *port, USBPacket *packet)
 275 {
 276     USBHubState *s = port->opaque;
 277
 278     /*
 279      * Just pass it along upstream for now.
 280      *
 281      * If we ever implement usb 2.0 split transactions this will
 282      * become a little more complicated ...
 283      *
 284      * Can't use usb_packet_complete() here because packet->owner is
 285      * cleared already, go call the ->complete() callback directly
 286      * instead.
 287      */
 288     s->dev.port->ops->complete(s->dev.port, packet);
 289 }
 290
 291 static USBDevice *usb_hub_find_device(USBDevice *dev, uint8_t addr)
 292 {
 293     USBHubState *s = USB_HUB(dev);
 294     USBHubPort *port;
 295     USBDevice *downstream;
 296     int i;
 297
 298     for (i = 0; i < s->num_ports; i++) {
 299         port = &s->ports[i];
 300         if (!(port->wPortStatus & PORT_STAT_ENABLE)) {
 301             continue;
 302         }
 303         downstream = usb_find_device(&port->port, addr);
 304         if (downstream != NULL) {
 305             return downstream;
 306         }
 307     }
 308     return NULL;
 309 }
 310
 311 static void usb_hub_handle_reset(USBDevice *dev)
 312 {
 313     USBHubState *s = USB_HUB(dev);
 314     USBHubPort *port;
 315     int i;
 316
 317     trace_usb_hub_reset(s->dev.addr);
 318     for (i = 0; i < s->num_ports; i++) {
 319         port = s->ports + i;
 320         port->wPortStatus = 0;
 321         port->wPortChange = 0;
 322         usb_hub_port_set(port, PORT_STAT_POWER);
 323         usb_hub_port_update(port);
 324     }
 325 }
 326
 327 static const char *feature_name(int feature)
 328 {
 329     static const char *name[] = {
 330         [PORT_CONNECTION]    = "connection",
 331         [PORT_ENABLE]        = "enable",
 332         [PORT_SUSPEND]       = "suspend",
 333         [PORT_OVERCURRENT]   = "overcurrent",
 334         [PORT_RESET]         = "reset",
 335         [PORT_POWER]         = "power",
 336         [PORT_LOWSPEED]      = "lowspeed",
 337         [PORT_HIGHSPEED]     = "highspeed",
 338         [PORT_C_CONNECTION]  = "change-connection",
 339         [PORT_C_ENABLE]      = "change-enable",
 340         [PORT_C_SUSPEND]     = "change-suspend",
 341         [PORT_C_OVERCURRENT] = "change-overcurrent",
 342         [PORT_C_RESET]       = "change-reset",
 343         [PORT_TEST]          = "test",
 344         [PORT_INDICATOR]     = "indicator",
 345     };
 346     if (feature < 0 || feature >= ARRAY_SIZE(name)) {
 347         return "?";
 348     }
 349     return name[feature] ?: "?";
 350 }
 351
 352 static void usb_hub_handle_control(USBDevice *dev, USBPacket *p,
 353                int request, int value, int index, int length, uint8_t *data)
 354 {
 355     USBHubState *s = (USBHubState *)dev;
 356     int ret;
 357
 358     trace_usb_hub_control(s->dev.addr, request, value, index, length);
 359
 360     ret = usb_desc_handle_control(dev, p, request, value, index, length, data);
 361     if (ret >= 0) {
 362         return;
 363     }
 364
 365     switch(request) {
 366     case EndpointOutRequest | USB_REQ_CLEAR_FEATURE:
 367         if (value == 0 && index != 0x81) { /* clear ep halt */
 368             goto fail;
 369         }
 370         break;
 371         /* usb specific requests */
 372     case GetHubStatus:
 373         data[0] = 0;
 374         data[1] = 0;
 375         data[2] = 0;
 376         data[3] = 0;
 377         p->actual_length = 4;
 378         break;
 379     case GetPortStatus:
 380         {
 381             unsigned int n = index - 1;
 382             USBHubPort *port;
 383             if (n >= s->num_ports) {
 384                 goto fail;
 385             }
 386             port = &s->ports[n];
 387             trace_usb_hub_get_port_status(s->dev.addr, index,
 388                                           port->wPortStatus,
 389                                           port->wPortChange);
 390             data[0] = port->wPortStatus;
 391             data[1] = port->wPortStatus >> 8;
 392             data[2] = port->wPortChange;
 393             data[3] = port->wPortChange >> 8;
 394             p->actual_length = 4;
 395         }
 396         break;
 397     case SetHubFeature:
 398     case ClearHubFeature:
 399         if (value != 0 && value != 1) {
 400             goto fail;
 401         }
 402         break;
 403     case SetPortFeature:
 404         {
 405             unsigned int n = index - 1;
 406             USBHubPort *port;
 407             USBDevice *dev;
 408
 409             trace_usb_hub_set_port_feature(s->dev.addr, index,
 410                                            feature_name(value));
 411
 412             if (n >= s->num_ports) {
 413                 goto fail;
 414             }
 415             port = &s->ports[n];
 416             dev = port->port.dev;
 417             switch(value) {
 418             case PORT_SUSPEND:
 419                 port->wPortStatus |= PORT_STAT_SUSPEND;
 420                 break;
 421             case PORT_RESET:
 422                 usb_hub_port_set(port, PORT_STAT_RESET);
 423                 usb_hub_port_clear(port, PORT_STAT_RESET);
 424                 if (dev && dev->attached) {
 425                     usb_device_reset(dev);
 426                     usb_hub_port_set(port, PORT_STAT_ENABLE);
 427                 }
 428                 usb_wakeup(s->intr, 0);
 429                 break;
 430             case PORT_POWER:
 431                 if (s->port_power) {
 432                     int64_t now = qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL);
 433                     usb_hub_port_set(port, PORT_STAT_POWER);
 434                     timer_mod(s->port_timer, now + 5000000); /* 5 ms */
 435                 }
 436                 break;
 437             default:
 438                 goto fail;
 439             }
 440         }
 441         break;
 442     case ClearPortFeature:
 443         {
 444             unsigned int n = index - 1;
 445             USBHubPort *port;
 446
 447             trace_usb_hub_clear_port_feature(s->dev.addr, index,
 448                                              feature_name(value));
 449
 450             if (n >= s->num_ports) {
 451                 goto fail;
 452             }
 453             port = &s->ports[n];
 454             switch(value) {
 455             case PORT_ENABLE:
 456                 port->wPortStatus &= ~PORT_STAT_ENABLE;
 457                 break;
 458             case PORT_C_ENABLE:
 459                 port->wPortChange &= ~PORT_STAT_C_ENABLE;
 460                 break;
 461             case PORT_SUSPEND:
 462                 usb_hub_port_clear(port, PORT_STAT_SUSPEND);
 463                 break;
 464             case PORT_C_SUSPEND:
 465                 port->wPortChange &= ~PORT_STAT_C_SUSPEND;
 466                 break;
 467             case PORT_C_CONNECTION:
 468                 port->wPortChange &= ~PORT_STAT_C_CONNECTION;
 469                 break;
 470             case PORT_C_OVERCURRENT:
 471                 port->wPortChange &= ~PORT_STAT_C_OVERCURRENT;
 472                 break;
 473             case PORT_C_RESET:
 474                 port->wPortChange &= ~PORT_STAT_C_RESET;
 475                 break;
 476             case PORT_POWER:
 477                 if (s->port_power) {
 478                     usb_hub_port_clear(port, PORT_STAT_POWER);
 479                     usb_hub_port_clear(port, PORT_STAT_CONNECTION);
 480                     usb_hub_port_clear(port, PORT_STAT_ENABLE);
 481                     usb_hub_port_clear(port, PORT_STAT_SUSPEND);
 482                     port->wPortChange = 0;
 483                 }
 484             default:
 485                 goto fail;
 486             }
 487         }
 488         break;
 489     case GetHubDescriptor:
 490         {
 491             unsigned int n, limit, var_hub_size = 0;
 492             memcpy(data, qemu_hub_hub_descriptor,
 493                    sizeof(qemu_hub_hub_descriptor));
 494             data[2] = s->num_ports;
 495
 496             if (s->port_power) {
 497                 data[3] &= ~0x03;
 498                 data[3] |= 0x01;
 499             }
 500
 501             /* fill DeviceRemovable bits */
 502             limit = DIV_ROUND_UP(s->num_ports + 1, 8) + 7;
 503             for (n = 7; n < limit; n++) {
 504                 data[n] = 0x00;
 505                 var_hub_size++;
 506             }
 507
 508             /* fill PortPwrCtrlMask bits */
 509             limit = limit + DIV_ROUND_UP(s->num_ports, 8);
 510             for (;n < limit; n++) {
 511                 data[n] = 0xff;
 512                 var_hub_size++;
 513             }
 514
 515             p->actual_length = sizeof(qemu_hub_hub_descriptor) + var_hub_size;
 516             data[0] = p->actual_length;
 517             break;
 518         }
 519     default:
 520     fail:
 521         p->status = USB_RET_STALL;
 522         break;
 523     }
 524 }
 525
 526 static void usb_hub_handle_data(USBDevice *dev, USBPacket *p)
 527 {
 528     USBHubState *s = (USBHubState *)dev;
 529
 530     switch(p->pid) {
 531     case USB_TOKEN_IN:
 532         if (p->ep->nr == 1) {
 533             USBHubPort *port;
 534             unsigned int status;
 535             uint8_t buf[4];
 536             int i, n;
 537             n = DIV_ROUND_UP(s->num_ports + 1, 8);
 538             if (p->iov.size == 1) { /* FreeBSD workaround */
 539                 n = 1;
 540             } else if (n > p->iov.size) {
 541                 p->status = USB_RET_BABBLE;
 542                 return;
 543             }
 544             status = 0;
 545             for (i = 0; i < s->num_ports; i++) {
 546                 port = &s->ports[i];
 547                 if (port->wPortChange)
 548                     status |= (1 << (i + 1));
 549             }
 550             if (status != 0) {
 551                 trace_usb_hub_status_report(s->dev.addr, status);
 552                 for(i = 0; i < n; i++) {
 553                     buf[i] = status >> (8 * i);
 554                 }
 555                 usb_packet_copy(p, buf, n);
 556             } else {
 557                 p->status = USB_RET_NAK; /* usb11 11.13.1 */
 558             }
 559         } else {
 560             goto fail;
 561         }
 562         break;
 563     case USB_TOKEN_OUT:
 564     default:
 565     fail:
 566         p->status = USB_RET_STALL;
 567         break;
 568     }
 569 }
 570
 571 static void usb_hub_unrealize(USBDevice *dev)
 572 {
 573     USBHubState *s = (USBHubState *)dev;
 574     int i;
 575
 576     for (i = 0; i < s->num_ports; i++) {
 577         usb_unregister_port(usb_bus_from_device(dev),
 578                             &s->ports[i].port);
 579     }
 580
 581     timer_del(s->port_timer);
 582     timer_free(s->port_timer);
 583 }
 584
 585 static USBPortOps usb_hub_port_ops = {
 586     .attach = usb_hub_attach,
 587     .detach = usb_hub_detach,
 588     .child_detach = usb_hub_child_detach,
 589     .wakeup = usb_hub_wakeup,
 590     .complete = usb_hub_complete,
 591 };
 592
 593 static void usb_hub_realize(USBDevice *dev, Error **errp)
 594 {
 595     USBHubState *s = USB_HUB(dev);
 596     USBHubPort *port;
 597     int i;
 598
 599     if (s->num_ports < 1 || s->num_ports > MAX_PORTS) {
 600         error_setg(errp, "num_ports (%d) out of range (1..%d)",
 601                    s->num_ports, MAX_PORTS);
 602         return;
 603     }
 604
 605     if (dev->port->hubcount == 5) {
 606         error_setg(errp, "usb hub chain too deep");
 607         return;
 608     }
 609
 610     usb_desc_create_serial(dev);
 611     usb_desc_init(dev);
 612     s->port_timer = timer_new_ns(QEMU_CLOCK_VIRTUAL,
 613                                  usb_hub_port_update_timer, s);
 614     s->intr = usb_ep_get(dev, USB_TOKEN_IN, 1);
 615     for (i = 0; i < s->num_ports; i++) {
 616         port = &s->ports[i];
 617         usb_register_port(usb_bus_from_device(dev),
 618                           &port->port, s, i, &usb_hub_port_ops,
 619                           USB_SPEED_MASK_LOW | USB_SPEED_MASK_FULL);
 620         usb_port_location(&port->port, dev->port, i+1);
 621     }
 622     usb_hub_handle_reset(dev);
 623 }
 624
 625 static const VMStateDescription vmstate_usb_hub_port = {
 626     .name = "usb-hub-port",
 627     .version_id = 1,
 628     .minimum_version_id = 1,
 629     .fields = (VMStateField[]) {
 630         VMSTATE_UINT16(wPortStatus, USBHubPort),
 631         VMSTATE_UINT16(wPortChange, USBHubPort),
 632         VMSTATE_END_OF_LIST()
 633     }
 634 };
 635
 636 static bool usb_hub_port_timer_needed(void *opaque)
 637 {
 638     USBHubState *s = opaque;
 639
 640     return s->port_power;
 641 }
 642
 643 static const VMStateDescription vmstate_usb_hub_port_timer = {
 644     .name = "usb-hub/port-timer",
 645     .version_id = 1,
 646     .minimum_version_id = 1,
 647     .needed = usb_hub_port_timer_needed,
 648     .fields = (VMStateField[]) {
 649         VMSTATE_TIMER_PTR(port_timer, USBHubState),
 650         VMSTATE_END_OF_LIST()
 651     },
 652 };
 653
 654 static const VMStateDescription vmstate_usb_hub = {
 655     .name = "usb-hub",
 656     .version_id = 1,
 657     .minimum_version_id = 1,
 658     .fields = (VMStateField[]) {
 659         VMSTATE_USB_DEVICE(dev, USBHubState),
 660         VMSTATE_STRUCT_ARRAY(ports, USBHubState, MAX_PORTS, 0,
 661                              vmstate_usb_hub_port, USBHubPort),
 662         VMSTATE_END_OF_LIST()
 663     },
 664     .subsections = (const VMStateDescription * []) {
 665         &vmstate_usb_hub_port_timer,
 666         NULL
 667     }
 668 };
 669
 670 static Property usb_hub_properties[] = {
 671     DEFINE_PROP_UINT32("ports", USBHubState, num_ports, 8),
 672     DEFINE_PROP_BOOL("port-power", USBHubState, port_power, false),
 673     DEFINE_PROP_END_OF_LIST(),
 674 };
 675
 676 static void usb_hub_class_initfn(ObjectClass *klass, void *data)
 677 {
 678     DeviceClass *dc = DEVICE_CLASS(klass);
 679     USBDeviceClass *uc = USB_DEVICE_CLASS(klass);
 680
 681     uc->realize        = usb_hub_realize;
 682     uc->product_desc   = "QEMU USB Hub";
 683     uc->usb_desc       = &desc_hub;
 684     uc->find_device    = usb_hub_find_device;
 685     uc->handle_reset   = usb_hub_handle_reset;
 686     uc->handle_control = usb_hub_handle_control;
 687     uc->handle_data    = usb_hub_handle_data;
 688     uc->unrealize      = usb_hub_unrealize;
 689     set_bit(DEVICE_CATEGORY_BRIDGE, dc->categories);
 690     dc->fw_name = "hub";
 691     dc->vmsd = &vmstate_usb_hub;
 692     device_class_set_props(dc, usb_hub_properties);
 693 }
 694
 695 static const TypeInfo hub_info = {
 696     .name          = TYPE_USB_HUB,
 697     .parent        = TYPE_USB_DEVICE,
 698     .instance_size = sizeof(USBHubState),
 699     .class_init    = usb_hub_class_initfn,
 700 };
 701
 702 static void usb_hub_register_types(void)
 703 {
 704     type_register_static(&hub_info);
 705 }
 706
 707 type_init(usb_hub_register_types)