hw/input/virtio-input-hid.c

   1 /*
   2  * This work is licensed under the terms of the GNU GPL, version 2 or
   3  * (at your option) any later version.  See the COPYING file in the
   4  * top-level directory.
   5  */
   6
   7 #include "qemu/osdep.h"
   8 #include "qemu/iov.h"
   9
  10 #include "hw/qdev.h"
  11 #include "hw/virtio/virtio.h"
  12 #include "hw/virtio/virtio-input.h"
  13
  14 #undef CONFIG_CURSES
  15 #include "ui/console.h"
  16
  17 #include "standard-headers/linux/input.h"
  18
  19 #define VIRTIO_ID_NAME_KEYBOARD "QEMU Virtio Keyboard"
  20 #define VIRTIO_ID_NAME_MOUSE    "QEMU Virtio Mouse"
  21 #define VIRTIO_ID_NAME_TABLET   "QEMU Virtio Tablet"
  22
  23 /* ----------------------------------------------------------------- */
  24
  25 static const unsigned int keymap_qcode[Q_KEY_CODE__MAX] = {
  26     [Q_KEY_CODE_ESC]                 = KEY_ESC,
  27     [Q_KEY_CODE_1]                   = KEY_1,
  28     [Q_KEY_CODE_2]                   = KEY_2,
  29     [Q_KEY_CODE_3]                   = KEY_3,
  30     [Q_KEY_CODE_4]                   = KEY_4,
  31     [Q_KEY_CODE_5]                   = KEY_5,
  32     [Q_KEY_CODE_6]                   = KEY_6,
  33     [Q_KEY_CODE_7]                   = KEY_7,
  34     [Q_KEY_CODE_8]                   = KEY_8,
  35     [Q_KEY_CODE_9]                   = KEY_9,
  36     [Q_KEY_CODE_0]                   = KEY_0,
  37     [Q_KEY_CODE_MINUS]               = KEY_MINUS,
  38     [Q_KEY_CODE_EQUAL]               = KEY_EQUAL,
  39     [Q_KEY_CODE_BACKSPACE]           = KEY_BACKSPACE,
  40
  41     [Q_KEY_CODE_TAB]                 = KEY_TAB,
  42     [Q_KEY_CODE_Q]                   = KEY_Q,
  43     [Q_KEY_CODE_W]                   = KEY_W,
  44     [Q_KEY_CODE_E]                   = KEY_E,
  45     [Q_KEY_CODE_R]                   = KEY_R,
  46     [Q_KEY_CODE_T]                   = KEY_T,
  47     [Q_KEY_CODE_Y]                   = KEY_Y,
  48     [Q_KEY_CODE_U]                   = KEY_U,
  49     [Q_KEY_CODE_I]                   = KEY_I,
  50     [Q_KEY_CODE_O]                   = KEY_O,
  51     [Q_KEY_CODE_P]                   = KEY_P,
  52     [Q_KEY_CODE_BRACKET_LEFT]        = KEY_LEFTBRACE,
  53     [Q_KEY_CODE_BRACKET_RIGHT]       = KEY_RIGHTBRACE,
  54     [Q_KEY_CODE_RET]                 = KEY_ENTER,
  55
  56     [Q_KEY_CODE_CTRL]                = KEY_LEFTCTRL,
  57     [Q_KEY_CODE_A]                   = KEY_A,
  58     [Q_KEY_CODE_S]                   = KEY_S,
  59     [Q_KEY_CODE_D]                   = KEY_D,
  60     [Q_KEY_CODE_F]                   = KEY_F,
  61     [Q_KEY_CODE_G]                   = KEY_G,
  62     [Q_KEY_CODE_H]                   = KEY_H,
  63     [Q_KEY_CODE_J]                   = KEY_J,
  64     [Q_KEY_CODE_K]                   = KEY_K,
  65     [Q_KEY_CODE_L]                   = KEY_L,
  66     [Q_KEY_CODE_SEMICOLON]           = KEY_SEMICOLON,
  67     [Q_KEY_CODE_APOSTROPHE]          = KEY_APOSTROPHE,
  68     [Q_KEY_CODE_GRAVE_ACCENT]        = KEY_GRAVE,
  69
  70     [Q_KEY_CODE_SHIFT]               = KEY_LEFTSHIFT,
  71     [Q_KEY_CODE_BACKSLASH]           = KEY_BACKSLASH,
  72     [Q_KEY_CODE_LESS]                = KEY_102ND,
  73     [Q_KEY_CODE_Z]                   = KEY_Z,
  74     [Q_KEY_CODE_X]                   = KEY_X,
  75     [Q_KEY_CODE_C]                   = KEY_C,
  76     [Q_KEY_CODE_V]                   = KEY_V,
  77     [Q_KEY_CODE_B]                   = KEY_B,
  78     [Q_KEY_CODE_N]                   = KEY_N,
  79     [Q_KEY_CODE_M]                   = KEY_M,
  80     [Q_KEY_CODE_COMMA]               = KEY_COMMA,
  81     [Q_KEY_CODE_DOT]                 = KEY_DOT,
  82     [Q_KEY_CODE_SLASH]               = KEY_SLASH,
  83     [Q_KEY_CODE_SHIFT_R]             = KEY_RIGHTSHIFT,
  84
  85     [Q_KEY_CODE_ALT]                 = KEY_LEFTALT,
  86     [Q_KEY_CODE_SPC]                 = KEY_SPACE,
  87     [Q_KEY_CODE_CAPS_LOCK]           = KEY_CAPSLOCK,
  88
  89     [Q_KEY_CODE_F1]                  = KEY_F1,
  90     [Q_KEY_CODE_F2]                  = KEY_F2,
  91     [Q_KEY_CODE_F3]                  = KEY_F3,
  92     [Q_KEY_CODE_F4]                  = KEY_F4,
  93     [Q_KEY_CODE_F5]                  = KEY_F5,
  94     [Q_KEY_CODE_F6]                  = KEY_F6,
  95     [Q_KEY_CODE_F7]                  = KEY_F7,
  96     [Q_KEY_CODE_F8]                  = KEY_F8,
  97     [Q_KEY_CODE_F9]                  = KEY_F9,
  98     [Q_KEY_CODE_F10]                 = KEY_F10,
  99     [Q_KEY_CODE_NUM_LOCK]            = KEY_NUMLOCK,
 100     [Q_KEY_CODE_SCROLL_LOCK]         = KEY_SCROLLLOCK,
 101
 102     [Q_KEY_CODE_KP_0]                = KEY_KP0,
 103     [Q_KEY_CODE_KP_1]                = KEY_KP1,
 104     [Q_KEY_CODE_KP_2]                = KEY_KP2,
 105     [Q_KEY_CODE_KP_3]                = KEY_KP3,
 106     [Q_KEY_CODE_KP_4]                = KEY_KP4,
 107     [Q_KEY_CODE_KP_5]                = KEY_KP5,
 108     [Q_KEY_CODE_KP_6]                = KEY_KP6,
 109     [Q_KEY_CODE_KP_7]                = KEY_KP7,
 110     [Q_KEY_CODE_KP_8]                = KEY_KP8,
 111     [Q_KEY_CODE_KP_9]                = KEY_KP9,
 112     [Q_KEY_CODE_KP_SUBTRACT]         = KEY_KPMINUS,
 113     [Q_KEY_CODE_KP_ADD]              = KEY_KPPLUS,
 114     [Q_KEY_CODE_KP_DECIMAL]          = KEY_KPDOT,
 115     [Q_KEY_CODE_KP_ENTER]            = KEY_KPENTER,
 116     [Q_KEY_CODE_KP_DIVIDE]           = KEY_KPSLASH,
 117     [Q_KEY_CODE_KP_MULTIPLY]         = KEY_KPASTERISK,
 118
 119     [Q_KEY_CODE_F11]                 = KEY_F11,
 120     [Q_KEY_CODE_F12]                 = KEY_F12,
 121
 122     [Q_KEY_CODE_CTRL_R]              = KEY_RIGHTCTRL,
 123     [Q_KEY_CODE_SYSRQ]               = KEY_SYSRQ,
 124     [Q_KEY_CODE_PRINT]               = KEY_SYSRQ,
 125     [Q_KEY_CODE_PAUSE]               = KEY_PAUSE,
 126     [Q_KEY_CODE_ALT_R]               = KEY_RIGHTALT,
 127
 128     [Q_KEY_CODE_HOME]                = KEY_HOME,
 129     [Q_KEY_CODE_UP]                  = KEY_UP,
 130     [Q_KEY_CODE_PGUP]                = KEY_PAGEUP,
 131     [Q_KEY_CODE_LEFT]                = KEY_LEFT,
 132     [Q_KEY_CODE_RIGHT]               = KEY_RIGHT,
 133     [Q_KEY_CODE_END]                 = KEY_END,
 134     [Q_KEY_CODE_DOWN]                = KEY_DOWN,
 135     [Q_KEY_CODE_PGDN]                = KEY_PAGEDOWN,
 136     [Q_KEY_CODE_INSERT]              = KEY_INSERT,
 137     [Q_KEY_CODE_DELETE]              = KEY_DELETE,
 138
 139     [Q_KEY_CODE_META_L]              = KEY_LEFTMETA,
 140     [Q_KEY_CODE_META_R]              = KEY_RIGHTMETA,
 141     [Q_KEY_CODE_MENU]                = KEY_MENU,
 142 };
 143
 144 static const unsigned int keymap_button[INPUT_BUTTON__MAX] = {
 145     [INPUT_BUTTON_LEFT]              = BTN_LEFT,
 146     [INPUT_BUTTON_RIGHT]             = BTN_RIGHT,
 147     [INPUT_BUTTON_MIDDLE]            = BTN_MIDDLE,
 148     [INPUT_BUTTON_WHEEL_UP]          = BTN_GEAR_UP,
 149     [INPUT_BUTTON_WHEEL_DOWN]        = BTN_GEAR_DOWN,
 150 };
 151
 152 static const unsigned int axismap_rel[INPUT_AXIS__MAX] = {
 153     [INPUT_AXIS_X]                   = REL_X,
 154     [INPUT_AXIS_Y]                   = REL_Y,
 155 };
 156
 157 static const unsigned int axismap_abs[INPUT_AXIS__MAX] = {
 158     [INPUT_AXIS_X]                   = ABS_X,
 159     [INPUT_AXIS_Y]                   = ABS_Y,
 160 };
 161
 162 /* ----------------------------------------------------------------- */
 163
 164 static void virtio_input_key_config(VirtIOInput *vinput,
 165                                     const unsigned int *keymap,
 166                                     size_t mapsize)
 167 {
 168     virtio_input_config keys;
 169     int i, bit, byte, bmax = 0;
 170
 171     memset(&keys, 0, sizeof(keys));
 172     for (i = 0; i < mapsize; i++) {
 173         bit = keymap[i];
 174         if (!bit) {
 175             continue;
 176         }
 177         byte = bit / 8;
 178         bit  = bit % 8;
 179         keys.u.bitmap[byte] |= (1 << bit);
 180         if (bmax < byte+1) {
 181             bmax = byte+1;
 182         }
 183     }
 184     keys.select = VIRTIO_INPUT_CFG_EV_BITS;
 185     keys.subsel = EV_KEY;
 186     keys.size   = bmax;
 187     virtio_input_add_config(vinput, &keys);
 188 }
 189
 190 static void virtio_input_handle_event(DeviceState *dev, QemuConsole *src,
 191                                       InputEvent *evt)
 192 {
 193     VirtIOInput *vinput = VIRTIO_INPUT(dev);
 194     virtio_input_event event;
 195     int qcode;
 196     InputKeyEvent *key;
 197     InputMoveEvent *move;
 198     InputBtnEvent *btn;
 199
 200     switch (evt->type) {
 201     case INPUT_EVENT_KIND_KEY:
 202         key = evt->u.key.data;
 203         qcode = qemu_input_key_value_to_qcode(key->key);
 204         if (qcode && keymap_qcode[qcode]) {
 205             event.type  = cpu_to_le16(EV_KEY);
 206             event.code  = cpu_to_le16(keymap_qcode[qcode]);
 207             event.value = cpu_to_le32(key->down ? 1 : 0);
 208             virtio_input_send(vinput, &event);
 209         } else {
 210             if (key->down) {
 211                 fprintf(stderr, "%s: unmapped key: %d [%s]\n", __func__,
 212                         qcode, QKeyCode_lookup[qcode]);
 213             }
 214         }
 215         break;
 216     case INPUT_EVENT_KIND_BTN:
 217         btn = evt->u.btn.data;
 218         if (keymap_button[btn->button]) {
 219             event.type  = cpu_to_le16(EV_KEY);
 220             event.code  = cpu_to_le16(keymap_button[btn->button]);
 221             event.value = cpu_to_le32(btn->down ? 1 : 0);
 222             virtio_input_send(vinput, &event);
 223         } else {
 224             if (btn->down) {
 225                 fprintf(stderr, "%s: unmapped button: %d [%s]\n", __func__,
 226                         btn->button,
 227                         InputButton_lookup[btn->button]);
 228             }
 229         }
 230         break;
 231     case INPUT_EVENT_KIND_REL:
 232         move = evt->u.rel.data;
 233         event.type  = cpu_to_le16(EV_REL);
 234         event.code  = cpu_to_le16(axismap_rel[move->axis]);
 235         event.value = cpu_to_le32(move->value);
 236         virtio_input_send(vinput, &event);
 237         break;
 238     case INPUT_EVENT_KIND_ABS:
 239         move = evt->u.abs.data;
 240         event.type  = cpu_to_le16(EV_ABS);
 241         event.code  = cpu_to_le16(axismap_abs[move->axis]);
 242         event.value = cpu_to_le32(move->value);
 243         virtio_input_send(vinput, &event);
 244         break;
 245     default:
 246         /* keep gcc happy */
 247         break;
 248     }
 249 }
 250
 251 static void virtio_input_handle_sync(DeviceState *dev)
 252 {
 253     VirtIOInput *vinput = VIRTIO_INPUT(dev);
 254     virtio_input_event event = {
 255         .type  = cpu_to_le16(EV_SYN),
 256         .code  = cpu_to_le16(SYN_REPORT),
 257         .value = 0,
 258     };
 259
 260     virtio_input_send(vinput, &event);
 261 }
 262
 263 static void virtio_input_hid_realize(DeviceState *dev, Error **errp)
 264 {
 265     VirtIOInputHID *vhid = VIRTIO_INPUT_HID(dev);
 266
 267     vhid->hs = qemu_input_handler_register(dev, vhid->handler);
 268     if (vhid->display && vhid->hs) {
 269         qemu_input_handler_bind(vhid->hs, vhid->display, vhid->head, NULL);
 270     }
 271 }
 272
 273 static void virtio_input_hid_unrealize(DeviceState *dev, Error **errp)
 274 {
 275     VirtIOInputHID *vhid = VIRTIO_INPUT_HID(dev);
 276     qemu_input_handler_unregister(vhid->hs);
 277 }
 278
 279 static void virtio_input_hid_change_active(VirtIOInput *vinput)
 280 {
 281     VirtIOInputHID *vhid = VIRTIO_INPUT_HID(vinput);
 282
 283     if (vinput->active) {
 284         qemu_input_handler_activate(vhid->hs);
 285     } else {
 286         qemu_input_handler_deactivate(vhid->hs);
 287     }
 288 }
 289
 290 static void virtio_input_hid_handle_status(VirtIOInput *vinput,
 291                                            virtio_input_event *event)
 292 {
 293     VirtIOInputHID *vhid = VIRTIO_INPUT_HID(vinput);
 294     int ledbit = 0;
 295
 296     switch (le16_to_cpu(event->type)) {
 297     case EV_LED:
 298         if (event->code == LED_NUML) {
 299             ledbit = QEMU_NUM_LOCK_LED;
 300         } else if (event->code == LED_CAPSL) {
 301             ledbit = QEMU_CAPS_LOCK_LED;
 302         } else if (event->code == LED_SCROLLL) {
 303             ledbit = QEMU_SCROLL_LOCK_LED;
 304         }
 305         if (event->value) {
 306             vhid->ledstate |= ledbit;
 307         } else {
 308             vhid->ledstate &= ~ledbit;
 309         }
 310         kbd_put_ledstate(vhid->ledstate);
 311         break;
 312     default:
 313         fprintf(stderr, "%s: unknown type %d\n", __func__,
 314                 le16_to_cpu(event->type));
 315         break;
 316     }
 317 }
 318
 319 static Property virtio_input_hid_properties[] = {
 320     DEFINE_PROP_STRING("display", VirtIOInputHID, display),
 321     DEFINE_PROP_UINT32("head", VirtIOInputHID, head, 0),
 322     DEFINE_PROP_END_OF_LIST(),
 323 };
 324
 325 static void virtio_input_hid_class_init(ObjectClass *klass, void *data)
 326 {
 327     DeviceClass *dc = DEVICE_CLASS(klass);
 328     VirtIOInputClass *vic = VIRTIO_INPUT_CLASS(klass);
 329
 330     dc->props          = virtio_input_hid_properties;
 331     vic->realize       = virtio_input_hid_realize;
 332     vic->unrealize     = virtio_input_hid_unrealize;
 333     vic->change_active = virtio_input_hid_change_active;
 334     vic->handle_status = virtio_input_hid_handle_status;
 335 }
 336
 337 static const TypeInfo virtio_input_hid_info = {
 338     .name          = TYPE_VIRTIO_INPUT_HID,
 339     .parent        = TYPE_VIRTIO_INPUT,
 340     .instance_size = sizeof(VirtIOInputHID),
 341     .class_init    = virtio_input_hid_class_init,
 342     .abstract      = true,
 343 };
 344
 345 /* ----------------------------------------------------------------- */
 346
 347 static QemuInputHandler virtio_keyboard_handler = {
 348     .name  = VIRTIO_ID_NAME_KEYBOARD,
 349     .mask  = INPUT_EVENT_MASK_KEY,
 350     .event = virtio_input_handle_event,
 351     .sync  = virtio_input_handle_sync,
 352 };
 353
 354 static struct virtio_input_config virtio_keyboard_config[] = {
 355     {
 356         .select    = VIRTIO_INPUT_CFG_ID_NAME,
 357         .size      = sizeof(VIRTIO_ID_NAME_KEYBOARD),
 358         .u.string  = VIRTIO_ID_NAME_KEYBOARD,
 359     },{
 360         .select    = VIRTIO_INPUT_CFG_ID_DEVIDS,
 361         .size      = sizeof(struct virtio_input_devids),
 362         .u.ids     = {
 363             .bustype = const_le16(BUS_VIRTUAL),
 364             .vendor  = const_le16(0x0627), /* same we use for usb hid devices */
 365             .product = const_le16(0x0001),
 366             .version = const_le16(0x0001),
 367         },
 368     },{
 369         .select    = VIRTIO_INPUT_CFG_EV_BITS,
 370         .subsel    = EV_REP,
 371         .size      = 1,
 372     },{
 373         .select    = VIRTIO_INPUT_CFG_EV_BITS,
 374         .subsel    = EV_LED,
 375         .size      = 1,
 376         .u.bitmap  = {
 377             (1 << LED_NUML) | (1 << LED_CAPSL) | (1 << LED_SCROLLL),
 378         },
 379     },
 380     { /* end of list */ },
 381 };
 382
 383 static void virtio_keyboard_init(Object *obj)
 384 {
 385     VirtIOInputHID *vhid = VIRTIO_INPUT_HID(obj);
 386     VirtIOInput *vinput = VIRTIO_INPUT(obj);
 387
 388     vhid->handler = &virtio_keyboard_handler;
 389     virtio_input_init_config(vinput, virtio_keyboard_config);
 390     virtio_input_key_config(vinput, keymap_qcode,
 391                             ARRAY_SIZE(keymap_qcode));
 392 }
 393
 394 static const TypeInfo virtio_keyboard_info = {
 395     .name          = TYPE_VIRTIO_KEYBOARD,
 396     .parent        = TYPE_VIRTIO_INPUT_HID,
 397     .instance_size = sizeof(VirtIOInputHID),
 398     .instance_init = virtio_keyboard_init,
 399 };
 400
 401 /* ----------------------------------------------------------------- */
 402
 403 static QemuInputHandler virtio_mouse_handler = {
 404     .name  = VIRTIO_ID_NAME_MOUSE,
 405     .mask  = INPUT_EVENT_MASK_BTN | INPUT_EVENT_MASK_REL,
 406     .event = virtio_input_handle_event,
 407     .sync  = virtio_input_handle_sync,
 408 };
 409
 410 static struct virtio_input_config virtio_mouse_config[] = {
 411     {
 412         .select    = VIRTIO_INPUT_CFG_ID_NAME,
 413         .size      = sizeof(VIRTIO_ID_NAME_MOUSE),
 414         .u.string  = VIRTIO_ID_NAME_MOUSE,
 415     },{
 416         .select    = VIRTIO_INPUT_CFG_ID_DEVIDS,
 417         .size      = sizeof(struct virtio_input_devids),
 418         .u.ids     = {
 419             .bustype = const_le16(BUS_VIRTUAL),
 420             .vendor  = const_le16(0x0627), /* same we use for usb hid devices */
 421             .product = const_le16(0x0002),
 422             .version = const_le16(0x0001),
 423         },
 424     },{
 425         .select    = VIRTIO_INPUT_CFG_EV_BITS,
 426         .subsel    = EV_REL,
 427         .size      = 1,
 428         .u.bitmap  = {
 429             (1 << REL_X) | (1 << REL_Y),
 430         },
 431     },
 432     { /* end of list */ },
 433 };
 434
 435 static void virtio_mouse_init(Object *obj)
 436 {
 437     VirtIOInputHID *vhid = VIRTIO_INPUT_HID(obj);
 438     VirtIOInput *vinput = VIRTIO_INPUT(obj);
 439
 440     vhid->handler = &virtio_mouse_handler;
 441     virtio_input_init_config(vinput, virtio_mouse_config);
 442     virtio_input_key_config(vinput, keymap_button,
 443                             ARRAY_SIZE(keymap_button));
 444 }
 445
 446 static const TypeInfo virtio_mouse_info = {
 447     .name          = TYPE_VIRTIO_MOUSE,
 448     .parent        = TYPE_VIRTIO_INPUT_HID,
 449     .instance_size = sizeof(VirtIOInputHID),
 450     .instance_init = virtio_mouse_init,
 451 };
 452
 453 /* ----------------------------------------------------------------- */
 454
 455 static QemuInputHandler virtio_tablet_handler = {
 456     .name  = VIRTIO_ID_NAME_TABLET,
 457     .mask  = INPUT_EVENT_MASK_BTN | INPUT_EVENT_MASK_ABS,
 458     .event = virtio_input_handle_event,
 459     .sync  = virtio_input_handle_sync,
 460 };
 461
 462 static struct virtio_input_config virtio_tablet_config[] = {
 463     {
 464         .select    = VIRTIO_INPUT_CFG_ID_NAME,
 465         .size      = sizeof(VIRTIO_ID_NAME_TABLET),
 466         .u.string  = VIRTIO_ID_NAME_TABLET,
 467     },{
 468         .select    = VIRTIO_INPUT_CFG_ID_DEVIDS,
 469         .size      = sizeof(struct virtio_input_devids),
 470         .u.ids     = {
 471             .bustype = const_le16(BUS_VIRTUAL),
 472             .vendor  = const_le16(0x0627), /* same we use for usb hid devices */
 473             .product = const_le16(0x0003),
 474             .version = const_le16(0x0001),
 475         },
 476     },{
 477         .select    = VIRTIO_INPUT_CFG_EV_BITS,
 478         .subsel    = EV_ABS,
 479         .size      = 1,
 480         .u.bitmap  = {
 481             (1 << ABS_X) | (1 << ABS_Y),
 482         },
 483     },{
 484         .select    = VIRTIO_INPUT_CFG_ABS_INFO,
 485         .subsel    = ABS_X,
 486         .size      = sizeof(virtio_input_absinfo),
 487         .u.abs.max = const_le32(INPUT_EVENT_ABS_SIZE - 1),
 488     },{
 489         .select    = VIRTIO_INPUT_CFG_ABS_INFO,
 490         .subsel    = ABS_Y,
 491         .size      = sizeof(virtio_input_absinfo),
 492         .u.abs.max = const_le32(INPUT_EVENT_ABS_SIZE - 1),
 493     },
 494     { /* end of list */ },
 495 };
 496
 497 static void virtio_tablet_init(Object *obj)
 498 {
 499     VirtIOInputHID *vhid = VIRTIO_INPUT_HID(obj);
 500     VirtIOInput *vinput = VIRTIO_INPUT(obj);
 501
 502     vhid->handler = &virtio_tablet_handler;
 503     virtio_input_init_config(vinput, virtio_tablet_config);
 504     virtio_input_key_config(vinput, keymap_button,
 505                             ARRAY_SIZE(keymap_button));
 506 }
 507
 508 static const TypeInfo virtio_tablet_info = {
 509     .name          = TYPE_VIRTIO_TABLET,
 510     .parent        = TYPE_VIRTIO_INPUT_HID,
 511     .instance_size = sizeof(VirtIOInputHID),
 512     .instance_init = virtio_tablet_init,
 513 };
 514
 515 /* ----------------------------------------------------------------- */
 516
 517 static void virtio_register_types(void)
 518 {
 519     type_register_static(&virtio_input_hid_info);
 520     type_register_static(&virtio_keyboard_info);
 521     type_register_static(&virtio_mouse_info);
 522     type_register_static(&virtio_tablet_info);
 523 }
 524
 525 type_init(virtio_register_types)