hw/usb-serial.c

   1 /*
   2  * FTDI FT232BM Device emulation
   3  *
   4  * Copyright (c) 2006 CodeSourcery.
   5  * Copyright (c) 2008 Samuel Thibault <samuel.thibault@ens-lyon.org>
   6  * Written by Paul Brook, reused for FTDI by Samuel Thibault
   7  *
   8  * This code is licenced under the LGPL.
   9  */
  10
  11 #include "qemu-common.h"
  12 #include "qemu-error.h"
  13 #include "usb.h"
  14 #include "qemu-char.h"
  15
  16 //#define DEBUG_Serial
  17
  18 #ifdef DEBUG_Serial
  19 #define DPRINTF(fmt, ...) \
  20 do { printf("usb-serial: " fmt , ## __VA_ARGS__); } while (0)
  21 #else
  22 #define DPRINTF(fmt, ...) do {} while(0)
  23 #endif
  24
  25 #define RECV_BUF 384
  26
  27 /* Commands */
  28 #define FTDI_RESET              0
  29 #define FTDI_SET_MDM_CTRL       1
  30 #define FTDI_SET_FLOW_CTRL      2
  31 #define FTDI_SET_BAUD           3
  32 #define FTDI_SET_DATA           4
  33 #define FTDI_GET_MDM_ST         5
  34 #define FTDI_SET_EVENT_CHR      6
  35 #define FTDI_SET_ERROR_CHR      7
  36 #define FTDI_SET_LATENCY        9
  37 #define FTDI_GET_LATENCY        10
  38
  39 #define DeviceOutVendor ((USB_DIR_OUT|USB_TYPE_VENDOR|USB_RECIP_DEVICE)<<8)
  40 #define DeviceInVendor  ((USB_DIR_IN |USB_TYPE_VENDOR|USB_RECIP_DEVICE)<<8)
  41
  42 /* RESET */
  43
  44 #define FTDI_RESET_SIO  0
  45 #define FTDI_RESET_RX   1
  46 #define FTDI_RESET_TX   2
  47
  48 /* SET_MDM_CTRL */
  49
  50 #define FTDI_DTR        1
  51 #define FTDI_SET_DTR    (FTDI_DTR << 8)
  52 #define FTDI_RTS        2
  53 #define FTDI_SET_RTS    (FTDI_RTS << 8)
  54
  55 /* SET_FLOW_CTRL */
  56
  57 #define FTDI_RTS_CTS_HS         1
  58 #define FTDI_DTR_DSR_HS         2
  59 #define FTDI_XON_XOFF_HS        4
  60
  61 /* SET_DATA */
  62
  63 #define FTDI_PARITY     (0x7 << 8)
  64 #define FTDI_ODD        (0x1 << 8)
  65 #define FTDI_EVEN       (0x2 << 8)
  66 #define FTDI_MARK       (0x3 << 8)
  67 #define FTDI_SPACE      (0x4 << 8)
  68
  69 #define FTDI_STOP       (0x3 << 11)
  70 #define FTDI_STOP1      (0x0 << 11)
  71 #define FTDI_STOP15     (0x1 << 11)
  72 #define FTDI_STOP2      (0x2 << 11)
  73
  74 /* GET_MDM_ST */
  75 /* TODO: should be sent every 40ms */
  76 #define FTDI_CTS  (1<<4)        // CTS line status
  77 #define FTDI_DSR  (1<<5)        // DSR line status
  78 #define FTDI_RI   (1<<6)        // RI line status
  79 #define FTDI_RLSD (1<<7)        // Receive Line Signal Detect
  80
  81 /* Status */
  82
  83 #define FTDI_DR   (1<<0)        // Data Ready
  84 #define FTDI_OE   (1<<1)        // Overrun Err
  85 #define FTDI_PE   (1<<2)        // Parity Err
  86 #define FTDI_FE   (1<<3)        // Framing Err
  87 #define FTDI_BI   (1<<4)        // Break Interrupt
  88 #define FTDI_THRE (1<<5)        // Transmitter Holding Register
  89 #define FTDI_TEMT (1<<6)        // Transmitter Empty
  90 #define FTDI_FIFO (1<<7)        // Error in FIFO
  91
  92 typedef struct {
  93     USBDevice dev;
  94     uint32_t vendorid;
  95     uint32_t productid;
  96     uint8_t recv_buf[RECV_BUF];
  97     uint16_t recv_ptr;
  98     uint16_t recv_used;
  99     uint8_t event_chr;
 100     uint8_t error_chr;
 101     uint8_t event_trigger;
 102     QEMUSerialSetParams params;
 103     int latency;        /* ms */
 104     CharDriverState *cs;
 105 } USBSerialState;
 106
 107 static const uint8_t qemu_serial_dev_descriptor[] = {
 108         0x12,       /*  u8 bLength; */
 109         0x01,       /*  u8 bDescriptorType; Device */
 110         0x00, 0x02, /*  u16 bcdUSB; v2.0 */
 111
 112         0x00,       /*  u8  bDeviceClass; */
 113         0x00,       /*  u8  bDeviceSubClass; */
 114         0x00,       /*  u8  bDeviceProtocol; [ low/full speeds only ] */
 115         0x08,       /*  u8  bMaxPacketSize0; 8 Bytes */
 116
 117         /* Vendor and product id are arbitrary.  */
 118         0x03, 0x04, /*  u16 idVendor; */
 119         0x00, 0xFF, /*  u16 idProduct; */
 120         0x00, 0x04, /*  u16 bcdDevice */
 121
 122         0x01,       /*  u8  iManufacturer; */
 123         0x02,       /*  u8  iProduct; */
 124         0x03,       /*  u8  iSerialNumber; */
 125         0x01        /*  u8  bNumConfigurations; */
 126 };
 127
 128 static const uint8_t qemu_serial_config_descriptor[] = {
 129
 130         /* one configuration */
 131         0x09,       /*  u8  bLength; */
 132         0x02,       /*  u8  bDescriptorType; Configuration */
 133         0x20, 0x00, /*  u16 wTotalLength; */
 134         0x01,       /*  u8  bNumInterfaces; (1) */
 135         0x01,       /*  u8  bConfigurationValue; */
 136         0x00,       /*  u8  iConfiguration; */
 137         0x80,       /*  u8  bmAttributes;
 138                                  Bit 7: must be set,
 139                                      6: Self-powered,
 140                                      5: Remote wakeup,
 141                                      4..0: resvd */
 142         100/2,       /*  u8  MaxPower; */
 143
 144         /* one interface */
 145         0x09,       /*  u8  if_bLength; */
 146         0x04,       /*  u8  if_bDescriptorType; Interface */
 147         0x00,       /*  u8  if_bInterfaceNumber; */
 148         0x00,       /*  u8  if_bAlternateSetting; */
 149         0x02,       /*  u8  if_bNumEndpoints; */
 150         0xff,       /*  u8  if_bInterfaceClass; Vendor Specific */
 151         0xff,       /*  u8  if_bInterfaceSubClass; Vendor Specific */
 152         0xff,       /*  u8  if_bInterfaceProtocol; Vendor Specific */
 153         0x02,       /*  u8  if_iInterface; */
 154
 155         /* Bulk-In endpoint */
 156         0x07,       /*  u8  ep_bLength; */
 157         0x05,       /*  u8  ep_bDescriptorType; Endpoint */
 158         0x81,       /*  u8  ep_bEndpointAddress; IN Endpoint 1 */
 159         0x02,       /*  u8  ep_bmAttributes; Bulk */
 160         0x40, 0x00, /*  u16 ep_wMaxPacketSize; */
 161         0x00,       /*  u8  ep_bInterval; */
 162
 163         /* Bulk-Out endpoint */
 164         0x07,       /*  u8  ep_bLength; */
 165         0x05,       /*  u8  ep_bDescriptorType; Endpoint */
 166         0x02,       /*  u8  ep_bEndpointAddress; OUT Endpoint 2 */
 167         0x02,       /*  u8  ep_bmAttributes; Bulk */
 168         0x40, 0x00, /*  u16 ep_wMaxPacketSize; */
 169         0x00        /*  u8  ep_bInterval; */
 170 };
 171
 172 static void usb_serial_reset(USBSerialState *s)
 173 {
 174     /* TODO: Set flow control to none */
 175     s->event_chr = 0x0d;
 176     s->event_trigger = 0;
 177     s->recv_ptr = 0;
 178     s->recv_used = 0;
 179     /* TODO: purge in char driver */
 180 }
 181
 182 static void usb_serial_handle_reset(USBDevice *dev)
 183 {
 184     USBSerialState *s = (USBSerialState *)dev;
 185
 186     DPRINTF("Reset\n");
 187
 188     usb_serial_reset(s);
 189     /* TODO: Reset char device, send BREAK? */
 190 }
 191
 192 static uint8_t usb_get_modem_lines(USBSerialState *s)
 193 {
 194     int flags;
 195     uint8_t ret;
 196
 197     if (qemu_chr_ioctl(s->cs, CHR_IOCTL_SERIAL_GET_TIOCM, &flags) == -ENOTSUP)
 198         return FTDI_CTS|FTDI_DSR|FTDI_RLSD;
 199
 200     ret = 0;
 201     if (flags & CHR_TIOCM_CTS)
 202         ret |= FTDI_CTS;
 203     if (flags & CHR_TIOCM_DSR)
 204         ret |= FTDI_DSR;
 205     if (flags & CHR_TIOCM_RI)
 206         ret |= FTDI_RI;
 207     if (flags & CHR_TIOCM_CAR)
 208         ret |= FTDI_RLSD;
 209
 210     return ret;
 211 }
 212
 213 static int usb_serial_handle_control(USBDevice *dev, int request, int value,
 214                                   int index, int length, uint8_t *data)
 215 {
 216     USBSerialState *s = (USBSerialState *)dev;
 217     int ret = 0;
 218
 219     //DPRINTF("got control %x, value %x\n",request, value);
 220     switch (request) {
 221     case DeviceRequest | USB_REQ_GET_STATUS:
 222         data[0] = (0 << USB_DEVICE_SELF_POWERED) |
 223             (dev->remote_wakeup << USB_DEVICE_REMOTE_WAKEUP);
 224         data[1] = 0x00;
 225         ret = 2;
 226         break;
 227     case DeviceOutRequest | USB_REQ_CLEAR_FEATURE:
 228         if (value == USB_DEVICE_REMOTE_WAKEUP) {
 229             dev->remote_wakeup = 0;
 230         } else {
 231             goto fail;
 232         }
 233         ret = 0;
 234         break;
 235     case DeviceOutRequest | USB_REQ_SET_FEATURE:
 236         if (value == USB_DEVICE_REMOTE_WAKEUP) {
 237             dev->remote_wakeup = 1;
 238         } else {
 239             goto fail;
 240         }
 241         ret = 0;
 242         break;
 243     case DeviceOutRequest | USB_REQ_SET_ADDRESS:
 244         dev->addr = value;
 245         ret = 0;
 246         break;
 247     case DeviceRequest | USB_REQ_GET_DESCRIPTOR:
 248         switch(value >> 8) {
 249         case USB_DT_DEVICE:
 250             memcpy(data, qemu_serial_dev_descriptor,
 251                    sizeof(qemu_serial_dev_descriptor));
 252             data[8] = s->vendorid & 0xff;
 253             data[9] = ((s->vendorid) >> 8) & 0xff;
 254             data[10] = s->productid & 0xff;
 255             data[11] = ((s->productid) >> 8) & 0xff;
 256             ret = sizeof(qemu_serial_dev_descriptor);
 257             break;
 258         case USB_DT_CONFIG:
 259             memcpy(data, qemu_serial_config_descriptor,
 260                    sizeof(qemu_serial_config_descriptor));
 261             ret = sizeof(qemu_serial_config_descriptor);
 262             break;
 263         case USB_DT_STRING:
 264             switch(value & 0xff) {
 265             case 0:
 266                 /* language ids */
 267                 data[0] = 4;
 268                 data[1] = 3;
 269                 data[2] = 0x09;
 270                 data[3] = 0x04;
 271                 ret = 4;
 272                 break;
 273             case 1:
 274                 /* vendor description */
 275                 ret = set_usb_string(data, "QEMU " QEMU_VERSION);
 276                 break;
 277             case 2:
 278                 /* product description */
 279                 ret = set_usb_string(data, "QEMU USB SERIAL");
 280                 break;
 281             case 3:
 282                 /* serial number */
 283                 ret = set_usb_string(data, "1");
 284                 break;
 285             default:
 286                 goto fail;
 287             }
 288             break;
 289         default:
 290             goto fail;
 291         }
 292         break;
 293     case DeviceRequest | USB_REQ_GET_CONFIGURATION:
 294         data[0] = 1;
 295         ret = 1;
 296         break;
 297     case DeviceOutRequest | USB_REQ_SET_CONFIGURATION:
 298         ret = 0;
 299         break;
 300     case DeviceRequest | USB_REQ_GET_INTERFACE:
 301         data[0] = 0;
 302         ret = 1;
 303         break;
 304     case InterfaceOutRequest | USB_REQ_SET_INTERFACE:
 305         ret = 0;
 306         break;
 307     case EndpointOutRequest | USB_REQ_CLEAR_FEATURE:
 308         ret = 0;
 309         break;
 310
 311         /* Class specific requests.  */
 312     case DeviceOutVendor | FTDI_RESET:
 313         switch (value) {
 314         case FTDI_RESET_SIO:
 315             usb_serial_reset(s);
 316             break;
 317         case FTDI_RESET_RX:
 318             s->recv_ptr = 0;
 319             s->recv_used = 0;
 320             /* TODO: purge from char device */
 321             break;
 322         case FTDI_RESET_TX:
 323             /* TODO: purge from char device */
 324             break;
 325         }
 326         break;
 327     case DeviceOutVendor | FTDI_SET_MDM_CTRL:
 328     {
 329         static int flags;
 330         qemu_chr_ioctl(s->cs,CHR_IOCTL_SERIAL_GET_TIOCM, &flags);
 331         if (value & FTDI_SET_RTS) {
 332             if (value & FTDI_RTS)
 333                 flags |= CHR_TIOCM_RTS;
 334             else
 335                 flags &= ~CHR_TIOCM_RTS;
 336         }
 337         if (value & FTDI_SET_DTR) {
 338             if (value & FTDI_DTR)
 339                 flags |= CHR_TIOCM_DTR;
 340             else
 341                 flags &= ~CHR_TIOCM_DTR;
 342         }
 343         qemu_chr_ioctl(s->cs,CHR_IOCTL_SERIAL_SET_TIOCM, &flags);
 344         break;
 345     }
 346     case DeviceOutVendor | FTDI_SET_FLOW_CTRL:
 347         /* TODO: ioctl */
 348         break;
 349     case DeviceOutVendor | FTDI_SET_BAUD: {
 350         static const int subdivisors8[8] = { 0, 4, 2, 1, 3, 5, 6, 7 };
 351         int subdivisor8 = subdivisors8[((value & 0xc000) >> 14)
 352                                      | ((index & 1) << 2)];
 353         int divisor = value & 0x3fff;
 354
 355         /* chip special cases */
 356         if (divisor == 1 && subdivisor8 == 0)
 357             subdivisor8 = 4;
 358         if (divisor == 0 && subdivisor8 == 0)
 359             divisor = 1;
 360
 361         s->params.speed = (48000000 / 2) / (8 * divisor + subdivisor8);
 362         qemu_chr_ioctl(s->cs, CHR_IOCTL_SERIAL_SET_PARAMS, &s->params);
 363         break;
 364     }
 365     case DeviceOutVendor | FTDI_SET_DATA:
 366         switch (value & FTDI_PARITY) {
 367             case 0:
 368                 s->params.parity = 'N';
 369                 break;
 370             case FTDI_ODD:
 371                 s->params.parity = 'O';
 372                 break;
 373             case FTDI_EVEN:
 374                 s->params.parity = 'E';
 375                 break;
 376             default:
 377                 DPRINTF("unsupported parity %d\n", value & FTDI_PARITY);
 378                 goto fail;
 379         }
 380         switch (value & FTDI_STOP) {
 381             case FTDI_STOP1:
 382                 s->params.stop_bits = 1;
 383                 break;
 384             case FTDI_STOP2:
 385                 s->params.stop_bits = 2;
 386                 break;
 387             default:
 388                 DPRINTF("unsupported stop bits %d\n", value & FTDI_STOP);
 389                 goto fail;
 390         }
 391         qemu_chr_ioctl(s->cs, CHR_IOCTL_SERIAL_SET_PARAMS, &s->params);
 392         /* TODO: TX ON/OFF */
 393         break;
 394     case DeviceInVendor | FTDI_GET_MDM_ST:
 395         data[0] = usb_get_modem_lines(s) | 1;
 396         data[1] = 0;
 397         ret = 2;
 398         break;
 399     case DeviceOutVendor | FTDI_SET_EVENT_CHR:
 400         /* TODO: handle it */
 401         s->event_chr = value;
 402         break;
 403     case DeviceOutVendor | FTDI_SET_ERROR_CHR:
 404         /* TODO: handle it */
 405         s->error_chr = value;
 406         break;
 407     case DeviceOutVendor | FTDI_SET_LATENCY:
 408         s->latency = value;
 409         break;
 410     case DeviceInVendor | FTDI_GET_LATENCY:
 411         data[0] = s->latency;
 412         ret = 1;
 413         break;
 414     default:
 415     fail:
 416         DPRINTF("got unsupported/bogus control %x, value %x\n", request, value);
 417         ret = USB_RET_STALL;
 418         break;
 419     }
 420     return ret;
 421 }
 422
 423 static int usb_serial_handle_data(USBDevice *dev, USBPacket *p)
 424 {
 425     USBSerialState *s = (USBSerialState *)dev;
 426     int ret = 0;
 427     uint8_t devep = p->devep;
 428     uint8_t *data = p->data;
 429     int len = p->len;
 430     int first_len;
 431
 432     switch (p->pid) {
 433     case USB_TOKEN_OUT:
 434         if (devep != 2)
 435             goto fail;
 436         qemu_chr_write(s->cs, data, len);
 437         break;
 438
 439     case USB_TOKEN_IN:
 440         if (devep != 1)
 441             goto fail;
 442         first_len = RECV_BUF - s->recv_ptr;
 443         if (len <= 2) {
 444             ret = USB_RET_NAK;
 445             break;
 446         }
 447         *data++ = usb_get_modem_lines(s) | 1;
 448         /* We do not have the uart details */
 449         /* handle serial break */
 450         if (s->event_trigger && s->event_trigger & FTDI_BI) {
 451             s->event_trigger &= ~FTDI_BI;
 452             *data = FTDI_BI;
 453             ret = 2;
 454             break;
 455         } else {
 456             *data++ = 0;
 457         }
 458         len -= 2;
 459         if (len > s->recv_used)
 460             len = s->recv_used;
 461         if (!len) {
 462             ret = USB_RET_NAK;
 463             break;
 464         }
 465         if (first_len > len)
 466             first_len = len;
 467         memcpy(data, s->recv_buf + s->recv_ptr, first_len);
 468         if (len > first_len)
 469             memcpy(data + first_len, s->recv_buf, len - first_len);
 470         s->recv_used -= len;
 471         s->recv_ptr = (s->recv_ptr + len) % RECV_BUF;
 472         ret = len + 2;
 473         break;
 474
 475     default:
 476         DPRINTF("Bad token\n");
 477     fail:
 478         ret = USB_RET_STALL;
 479         break;
 480     }
 481
 482     return ret;
 483 }
 484
 485 static void usb_serial_handle_destroy(USBDevice *dev)
 486 {
 487     USBSerialState *s = (USBSerialState *)dev;
 488
 489     qemu_chr_close(s->cs);
 490 }
 491
 492 static int usb_serial_can_read(void *opaque)
 493 {
 494     USBSerialState *s = opaque;
 495     return RECV_BUF - s->recv_used;
 496 }
 497
 498 static void usb_serial_read(void *opaque, const uint8_t *buf, int size)
 499 {
 500     USBSerialState *s = opaque;
 501     int first_size, start;
 502
 503     /* room in the buffer? */
 504     if (size > (RECV_BUF - s->recv_used))
 505         size = RECV_BUF - s->recv_used;
 506
 507     start = s->recv_ptr + s->recv_used;
 508     if (start < RECV_BUF) {
 509         /* copy data to end of buffer */
 510         first_size = RECV_BUF - start;
 511         if (first_size > size)
 512             first_size = size;
 513
 514         memcpy(s->recv_buf + start, buf, first_size);
 515
 516         /* wrap around to front if needed */
 517         if (size > first_size)
 518             memcpy(s->recv_buf, buf + first_size, size - first_size);
 519     } else {
 520         start -= RECV_BUF;
 521         memcpy(s->recv_buf + start, buf, size);
 522     }
 523     s->recv_used += size;
 524 }
 525
 526 static void usb_serial_event(void *opaque, int event)
 527 {
 528     USBSerialState *s = opaque;
 529
 530     switch (event) {
 531         case CHR_EVENT_BREAK:
 532             s->event_trigger |= FTDI_BI;
 533             break;
 534         case CHR_EVENT_FOCUS:
 535             break;
 536         case CHR_EVENT_OPENED:
 537             usb_serial_reset(s);
 538             /* TODO: Reset USB port */
 539             break;
 540     }
 541 }
 542
 543 static int usb_serial_initfn(USBDevice *dev)
 544 {
 545     USBSerialState *s = DO_UPCAST(USBSerialState, dev, dev);
 546     s->dev.speed = USB_SPEED_FULL;
 547
 548     qemu_chr_add_handlers(s->cs, usb_serial_can_read, usb_serial_read,
 549                           usb_serial_event, s);
 550     usb_serial_handle_reset(dev);
 551     return 0;
 552 }
 553
 554 static USBDevice *usb_serial_init(const char *filename)
 555 {
 556     USBDevice *dev;
 557     CharDriverState *cdrv;
 558     uint32_t vendorid = 0, productid = 0;
 559     char label[32];
 560     static int index;
 561
 562     while (*filename && *filename != ':') {
 563         const char *p;
 564         char *e;
 565         if (strstart(filename, "vendorid=", &p)) {
 566             vendorid = strtol(p, &e, 16);
 567             if (e == p || (*e && *e != ',' && *e != ':')) {
 568                 error_report("bogus vendor ID %s", p);
 569                 return NULL;
 570             }
 571             filename = e;
 572         } else if (strstart(filename, "productid=", &p)) {
 573             productid = strtol(p, &e, 16);
 574             if (e == p || (*e && *e != ',' && *e != ':')) {
 575                 error_report("bogus product ID %s", p);
 576                 return NULL;
 577             }
 578             filename = e;
 579         } else {
 580             error_report("unrecognized serial USB option %s", filename);
 581             return NULL;
 582         }
 583         while(*filename == ',')
 584             filename++;
 585     }
 586     if (!*filename) {
 587         error_report("character device specification needed");
 588         return NULL;
 589     }
 590     filename++;
 591
 592     snprintf(label, sizeof(label), "usbserial%d", index++);
 593     cdrv = qemu_chr_open(label, filename, NULL);
 594     if (!cdrv)
 595         return NULL;
 596
 597     dev = usb_create(NULL /* FIXME */, "usb-serial");
 598     if (!dev) {
 599         return NULL;
 600     }
 601     qdev_prop_set_chr(&dev->qdev, "chardev", cdrv);
 602     if (vendorid)
 603         qdev_prop_set_uint16(&dev->qdev, "vendorid", vendorid);
 604     if (productid)
 605         qdev_prop_set_uint16(&dev->qdev, "productid", productid);
 606     qdev_init_nofail(&dev->qdev);
 607
 608     return dev;
 609 }
 610
 611 static USBDevice *usb_braille_init(const char *unused)
 612 {
 613     USBDevice *dev;
 614     CharDriverState *cdrv;
 615
 616     cdrv = qemu_chr_open("braille", "braille", NULL);
 617     if (!cdrv)
 618         return NULL;
 619
 620     dev = usb_create(NULL /* FIXME */, "usb-braille");
 621     qdev_prop_set_chr(&dev->qdev, "chardev", cdrv);
 622     qdev_init_nofail(&dev->qdev);
 623
 624     return dev;
 625 }
 626
 627 static struct USBDeviceInfo serial_info = {
 628     .product_desc   = "QEMU USB Serial",
 629     .qdev.name      = "usb-serial",
 630     .qdev.size      = sizeof(USBSerialState),
 631     .init           = usb_serial_initfn,
 632     .handle_packet  = usb_generic_handle_packet,
 633     .handle_reset   = usb_serial_handle_reset,
 634     .handle_control = usb_serial_handle_control,
 635     .handle_data    = usb_serial_handle_data,
 636     .handle_destroy = usb_serial_handle_destroy,
 637     .usbdevice_name = "serial",
 638     .usbdevice_init = usb_serial_init,
 639     .qdev.props     = (Property[]) {
 640         DEFINE_PROP_CHR("chardev",     USBSerialState, cs),
 641         DEFINE_PROP_HEX32("vendorid",  USBSerialState, vendorid,  0x0403),
 642         DEFINE_PROP_HEX32("productid", USBSerialState, productid, 0x6001),
 643         DEFINE_PROP_END_OF_LIST(),
 644     },
 645 };
 646
 647 static struct USBDeviceInfo braille_info = {
 648     .product_desc   = "QEMU USB Braille",
 649     .qdev.name      = "usb-braille",
 650     .qdev.size      = sizeof(USBSerialState),
 651     .init           = usb_serial_initfn,
 652     .handle_packet  = usb_generic_handle_packet,
 653     .handle_reset   = usb_serial_handle_reset,
 654     .handle_control = usb_serial_handle_control,
 655     .handle_data    = usb_serial_handle_data,
 656     .handle_destroy = usb_serial_handle_destroy,
 657     .usbdevice_name = "braille",
 658     .usbdevice_init = usb_braille_init,
 659     .qdev.props     = (Property[]) {
 660         DEFINE_PROP_CHR("chardev",     USBSerialState, cs),
 661         DEFINE_PROP_HEX32("vendorid",  USBSerialState, vendorid,  0x0403),
 662         DEFINE_PROP_HEX32("productid", USBSerialState, productid, 0xfe72),
 663         DEFINE_PROP_END_OF_LIST(),
 664     },
 665 };
 666
 667 static void usb_serial_register_devices(void)
 668 {
 669     usb_qdev_register(&serial_info);
 670     usb_qdev_register(&braille_info);
 671 }
 672 device_init(usb_serial_register_devices)