hw/input/adb.c

   1 /*
   2  * QEMU ADB support
   3  *
   4  * Copyright (c) 2004 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 #include "qemu/osdep.h"
  25 #include "hw/hw.h"
  26 #include "hw/input/adb.h"
  27 #include "ui/console.h"
  28 #include "include/hw/input/adb-keys.h"
  29 #include "ui/input.h"
  30 #include "sysemu/sysemu.h"
  31
  32 /* debug ADB */
  33 //#define DEBUG_ADB
  34
  35 #ifdef DEBUG_ADB
  36 #define ADB_DPRINTF(fmt, ...) \
  37 do { printf("ADB: " fmt , ## __VA_ARGS__); } while (0)
  38 #else
  39 #define ADB_DPRINTF(fmt, ...)
  40 #endif
  41
  42 /* ADB commands */
  43 #define ADB_BUSRESET            0x00
  44 #define ADB_FLUSH               0x01
  45 #define ADB_WRITEREG            0x08
  46 #define ADB_READREG             0x0c
  47
  48 /* ADB device commands */
  49 #define ADB_CMD_SELF_TEST               0xff
  50 #define ADB_CMD_CHANGE_ID               0xfe
  51 #define ADB_CMD_CHANGE_ID_AND_ACT       0xfd
  52 #define ADB_CMD_CHANGE_ID_AND_ENABLE    0x00
  53
  54 /* ADB default device IDs (upper 4 bits of ADB command byte) */
  55 #define ADB_DEVID_DONGLE   1
  56 #define ADB_DEVID_KEYBOARD 2
  57 #define ADB_DEVID_MOUSE    3
  58 #define ADB_DEVID_TABLET   4
  59 #define ADB_DEVID_MODEM    5
  60 #define ADB_DEVID_MISC     7
  61
  62 /* error codes */
  63 #define ADB_RET_NOTPRESENT (-2)
  64
  65 /* The adb keyboard doesn't have every key imaginable */
  66 #define NO_KEY 0xff
  67
  68 static void adb_device_reset(ADBDevice *d)
  69 {
  70     qdev_reset_all(DEVICE(d));
  71 }
  72
  73 int adb_request(ADBBusState *s, uint8_t *obuf, const uint8_t *buf, int len)
  74 {
  75     ADBDevice *d;
  76     int devaddr, cmd, i;
  77
  78     cmd = buf[0] & 0xf;
  79     if (cmd == ADB_BUSRESET) {
  80         for(i = 0; i < s->nb_devices; i++) {
  81             d = s->devices[i];
  82             adb_device_reset(d);
  83         }
  84         return 0;
  85     }
  86     devaddr = buf[0] >> 4;
  87     for(i = 0; i < s->nb_devices; i++) {
  88         d = s->devices[i];
  89         if (d->devaddr == devaddr) {
  90             ADBDeviceClass *adc = ADB_DEVICE_GET_CLASS(d);
  91             return adc->devreq(d, obuf, buf, len);
  92         }
  93     }
  94     return ADB_RET_NOTPRESENT;
  95 }
  96
  97 /* XXX: move that to cuda ? */
  98 int adb_poll(ADBBusState *s, uint8_t *obuf, uint16_t poll_mask)
  99 {
 100     ADBDevice *d;
 101     int olen, i;
 102     uint8_t buf[1];
 103
 104     olen = 0;
 105     for(i = 0; i < s->nb_devices; i++) {
 106         if (s->poll_index >= s->nb_devices)
 107             s->poll_index = 0;
 108         d = s->devices[s->poll_index];
 109         if ((1 << d->devaddr) & poll_mask) {
 110             buf[0] = ADB_READREG | (d->devaddr << 4);
 111             olen = adb_request(s, obuf + 1, buf, 1);
 112             /* if there is data, we poll again the same device */
 113             if (olen > 0) {
 114                 obuf[0] = buf[0];
 115                 olen++;
 116                 break;
 117             }
 118         }
 119         s->poll_index++;
 120     }
 121     return olen;
 122 }
 123
 124 static const TypeInfo adb_bus_type_info = {
 125     .name = TYPE_ADB_BUS,
 126     .parent = TYPE_BUS,
 127     .instance_size = sizeof(ADBBusState),
 128 };
 129
 130 static const VMStateDescription vmstate_adb_device = {
 131     .name = "adb_device",
 132     .version_id = 0,
 133     .minimum_version_id = 0,
 134     .fields = (VMStateField[]) {
 135         VMSTATE_INT32(devaddr, ADBDevice),
 136         VMSTATE_INT32(handler, ADBDevice),
 137         VMSTATE_END_OF_LIST()
 138     }
 139 };
 140
 141 static void adb_device_realizefn(DeviceState *dev, Error **errp)
 142 {
 143     ADBDevice *d = ADB_DEVICE(dev);
 144     ADBBusState *bus = ADB_BUS(qdev_get_parent_bus(dev));
 145
 146     if (bus->nb_devices >= MAX_ADB_DEVICES) {
 147         return;
 148     }
 149
 150     bus->devices[bus->nb_devices++] = d;
 151 }
 152
 153 static void adb_device_class_init(ObjectClass *oc, void *data)
 154 {
 155     DeviceClass *dc = DEVICE_CLASS(oc);
 156
 157     dc->realize = adb_device_realizefn;
 158     dc->bus_type = TYPE_ADB_BUS;
 159 }
 160
 161 static const TypeInfo adb_device_type_info = {
 162     .name = TYPE_ADB_DEVICE,
 163     .parent = TYPE_DEVICE,
 164     .instance_size = sizeof(ADBDevice),
 165     .abstract = true,
 166     .class_init = adb_device_class_init,
 167 };
 168
 169 /***************************************************************/
 170 /* Keyboard ADB device */
 171
 172 #define ADB_KEYBOARD(obj) OBJECT_CHECK(KBDState, (obj), TYPE_ADB_KEYBOARD)
 173
 174 typedef struct KBDState {
 175     /*< private >*/
 176     ADBDevice parent_obj;
 177     /*< public >*/
 178
 179     uint8_t data[128];
 180     int rptr, wptr, count;
 181 } KBDState;
 182
 183 #define ADB_KEYBOARD_CLASS(class) \
 184     OBJECT_CLASS_CHECK(ADBKeyboardClass, (class), TYPE_ADB_KEYBOARD)
 185 #define ADB_KEYBOARD_GET_CLASS(obj) \
 186     OBJECT_GET_CLASS(ADBKeyboardClass, (obj), TYPE_ADB_KEYBOARD)
 187
 188 typedef struct ADBKeyboardClass {
 189     /*< private >*/
 190     ADBDeviceClass parent_class;
 191     /*< public >*/
 192
 193     DeviceRealize parent_realize;
 194 } ADBKeyboardClass;
 195
 196 int qcode_to_adb_keycode[] = {
 197      /* Make sure future additions are automatically set to NO_KEY */
 198     [0 ... 0xff]               = NO_KEY,
 199
 200     [Q_KEY_CODE_SHIFT]         = ADB_KEY_LEFT_SHIFT,
 201     [Q_KEY_CODE_SHIFT_R]       = ADB_KEY_RIGHT_SHIFT,
 202     [Q_KEY_CODE_ALT]           = ADB_KEY_LEFT_OPTION,
 203     [Q_KEY_CODE_ALT_R]         = ADB_KEY_RIGHT_OPTION,
 204     [Q_KEY_CODE_ALTGR]         = ADB_KEY_RIGHT_OPTION,
 205     [Q_KEY_CODE_CTRL]          = ADB_KEY_LEFT_CONTROL,
 206     [Q_KEY_CODE_CTRL_R]        = ADB_KEY_RIGHT_CONTROL,
 207     [Q_KEY_CODE_META_L]        = ADB_KEY_COMMAND,
 208     [Q_KEY_CODE_META_R]        = ADB_KEY_COMMAND,
 209     [Q_KEY_CODE_SPC]           = ADB_KEY_SPACEBAR,
 210
 211     [Q_KEY_CODE_ESC]           = ADB_KEY_ESC,
 212     [Q_KEY_CODE_1]             = ADB_KEY_1,
 213     [Q_KEY_CODE_2]             = ADB_KEY_2,
 214     [Q_KEY_CODE_3]             = ADB_KEY_3,
 215     [Q_KEY_CODE_4]             = ADB_KEY_4,
 216     [Q_KEY_CODE_5]             = ADB_KEY_5,
 217     [Q_KEY_CODE_6]             = ADB_KEY_6,
 218     [Q_KEY_CODE_7]             = ADB_KEY_7,
 219     [Q_KEY_CODE_8]             = ADB_KEY_8,
 220     [Q_KEY_CODE_9]             = ADB_KEY_9,
 221     [Q_KEY_CODE_0]             = ADB_KEY_0,
 222     [Q_KEY_CODE_MINUS]         = ADB_KEY_MINUS,
 223     [Q_KEY_CODE_EQUAL]         = ADB_KEY_EQUAL,
 224     [Q_KEY_CODE_BACKSPACE]     = ADB_KEY_DELETE,
 225     [Q_KEY_CODE_TAB]           = ADB_KEY_TAB,
 226     [Q_KEY_CODE_Q]             = ADB_KEY_Q,
 227     [Q_KEY_CODE_W]             = ADB_KEY_W,
 228     [Q_KEY_CODE_E]             = ADB_KEY_E,
 229     [Q_KEY_CODE_R]             = ADB_KEY_R,
 230     [Q_KEY_CODE_T]             = ADB_KEY_T,
 231     [Q_KEY_CODE_Y]             = ADB_KEY_Y,
 232     [Q_KEY_CODE_U]             = ADB_KEY_U,
 233     [Q_KEY_CODE_I]             = ADB_KEY_I,
 234     [Q_KEY_CODE_O]             = ADB_KEY_O,
 235     [Q_KEY_CODE_P]             = ADB_KEY_P,
 236     [Q_KEY_CODE_BRACKET_LEFT]  = ADB_KEY_LEFT_BRACKET,
 237     [Q_KEY_CODE_BRACKET_RIGHT] = ADB_KEY_RIGHT_BRACKET,
 238     [Q_KEY_CODE_RET]           = ADB_KEY_RETURN,
 239     [Q_KEY_CODE_A]             = ADB_KEY_A,
 240     [Q_KEY_CODE_S]             = ADB_KEY_S,
 241     [Q_KEY_CODE_D]             = ADB_KEY_D,
 242     [Q_KEY_CODE_F]             = ADB_KEY_F,
 243     [Q_KEY_CODE_G]             = ADB_KEY_G,
 244     [Q_KEY_CODE_H]             = ADB_KEY_H,
 245     [Q_KEY_CODE_J]             = ADB_KEY_J,
 246     [Q_KEY_CODE_K]             = ADB_KEY_K,
 247     [Q_KEY_CODE_L]             = ADB_KEY_L,
 248     [Q_KEY_CODE_SEMICOLON]     = ADB_KEY_SEMICOLON,
 249     [Q_KEY_CODE_APOSTROPHE]    = ADB_KEY_APOSTROPHE,
 250     [Q_KEY_CODE_GRAVE_ACCENT]  = ADB_KEY_GRAVE_ACCENT,
 251     [Q_KEY_CODE_BACKSLASH]     = ADB_KEY_BACKSLASH,
 252     [Q_KEY_CODE_Z]             = ADB_KEY_Z,
 253     [Q_KEY_CODE_X]             = ADB_KEY_X,
 254     [Q_KEY_CODE_C]             = ADB_KEY_C,
 255     [Q_KEY_CODE_V]             = ADB_KEY_V,
 256     [Q_KEY_CODE_B]             = ADB_KEY_B,
 257     [Q_KEY_CODE_N]             = ADB_KEY_N,
 258     [Q_KEY_CODE_M]             = ADB_KEY_M,
 259     [Q_KEY_CODE_COMMA]         = ADB_KEY_COMMA,
 260     [Q_KEY_CODE_DOT]           = ADB_KEY_PERIOD,
 261     [Q_KEY_CODE_SLASH]         = ADB_KEY_FORWARD_SLASH,
 262     [Q_KEY_CODE_ASTERISK]      = ADB_KEY_KP_MULTIPLY,
 263     [Q_KEY_CODE_CAPS_LOCK]     = ADB_KEY_CAPS_LOCK,
 264
 265     [Q_KEY_CODE_F1]            = ADB_KEY_F1,
 266     [Q_KEY_CODE_F2]            = ADB_KEY_F2,
 267     [Q_KEY_CODE_F3]            = ADB_KEY_F3,
 268     [Q_KEY_CODE_F4]            = ADB_KEY_F4,
 269     [Q_KEY_CODE_F5]            = ADB_KEY_F5,
 270     [Q_KEY_CODE_F6]            = ADB_KEY_F6,
 271     [Q_KEY_CODE_F7]            = ADB_KEY_F7,
 272     [Q_KEY_CODE_F8]            = ADB_KEY_F8,
 273     [Q_KEY_CODE_F9]            = ADB_KEY_F9,
 274     [Q_KEY_CODE_F10]           = ADB_KEY_F10,
 275     [Q_KEY_CODE_F11]           = ADB_KEY_F11,
 276     [Q_KEY_CODE_F12]           = ADB_KEY_F12,
 277     [Q_KEY_CODE_PRINT]         = ADB_KEY_F13,
 278     [Q_KEY_CODE_SYSRQ]         = ADB_KEY_F13,
 279     [Q_KEY_CODE_SCROLL_LOCK]   = ADB_KEY_F14,
 280     [Q_KEY_CODE_PAUSE]         = ADB_KEY_F15,
 281
 282     [Q_KEY_CODE_NUM_LOCK]      = ADB_KEY_KP_CLEAR,
 283     [Q_KEY_CODE_KP_EQUALS]     = ADB_KEY_KP_EQUAL,
 284     [Q_KEY_CODE_KP_DIVIDE]     = ADB_KEY_KP_DIVIDE,
 285     [Q_KEY_CODE_KP_MULTIPLY]   = ADB_KEY_KP_MULTIPLY,
 286     [Q_KEY_CODE_KP_SUBTRACT]   = ADB_KEY_KP_SUBTRACT,
 287     [Q_KEY_CODE_KP_ADD]        = ADB_KEY_KP_PLUS,
 288     [Q_KEY_CODE_KP_ENTER]      = ADB_KEY_KP_ENTER,
 289     [Q_KEY_CODE_KP_DECIMAL]    = ADB_KEY_KP_PERIOD,
 290     [Q_KEY_CODE_KP_0]          = ADB_KEY_KP_0,
 291     [Q_KEY_CODE_KP_1]          = ADB_KEY_KP_1,
 292     [Q_KEY_CODE_KP_2]          = ADB_KEY_KP_2,
 293     [Q_KEY_CODE_KP_3]          = ADB_KEY_KP_3,
 294     [Q_KEY_CODE_KP_4]          = ADB_KEY_KP_4,
 295     [Q_KEY_CODE_KP_5]          = ADB_KEY_KP_5,
 296     [Q_KEY_CODE_KP_6]          = ADB_KEY_KP_6,
 297     [Q_KEY_CODE_KP_7]          = ADB_KEY_KP_7,
 298     [Q_KEY_CODE_KP_8]          = ADB_KEY_KP_8,
 299     [Q_KEY_CODE_KP_9]          = ADB_KEY_KP_9,
 300
 301     [Q_KEY_CODE_UP]            = ADB_KEY_UP,
 302     [Q_KEY_CODE_DOWN]          = ADB_KEY_DOWN,
 303     [Q_KEY_CODE_LEFT]          = ADB_KEY_LEFT,
 304     [Q_KEY_CODE_RIGHT]         = ADB_KEY_RIGHT,
 305
 306     [Q_KEY_CODE_HELP]          = ADB_KEY_HELP,
 307     [Q_KEY_CODE_INSERT]        = ADB_KEY_HELP,
 308     [Q_KEY_CODE_DELETE]        = ADB_KEY_FORWARD_DELETE,
 309     [Q_KEY_CODE_HOME]          = ADB_KEY_HOME,
 310     [Q_KEY_CODE_END]           = ADB_KEY_END,
 311     [Q_KEY_CODE_PGUP]          = ADB_KEY_PAGE_UP,
 312     [Q_KEY_CODE_PGDN]          = ADB_KEY_PAGE_DOWN,
 313
 314     [Q_KEY_CODE_POWER]         = ADB_KEY_POWER
 315 };
 316
 317 static void adb_kbd_put_keycode(void *opaque, int keycode)
 318 {
 319     KBDState *s = opaque;
 320
 321     if (s->count < sizeof(s->data)) {
 322         s->data[s->wptr] = keycode;
 323         if (++s->wptr == sizeof(s->data))
 324             s->wptr = 0;
 325         s->count++;
 326     }
 327 }
 328
 329 static int adb_kbd_poll(ADBDevice *d, uint8_t *obuf)
 330 {
 331     KBDState *s = ADB_KEYBOARD(d);
 332     int keycode;
 333     int olen;
 334
 335     olen = 0;
 336     if (s->count == 0) {
 337         return 0;
 338     }
 339     keycode = s->data[s->rptr];
 340     s->rptr++;
 341     if (s->rptr == sizeof(s->data)) {
 342         s->rptr = 0;
 343     }
 344     s->count--;
 345     /*
 346      * The power key is the only two byte value key, so it is a special case.
 347      * Since 0x7f is not a used keycode for ADB we overload it to indicate the
 348      * power button when we're storing keycodes in our internal buffer, and
 349      * expand it out to two bytes when we send to the guest.
 350      */
 351     if (keycode == 0x7f) {
 352         obuf[0] = 0x7f;
 353         obuf[1] = 0x7f;
 354         olen = 2;
 355     } else {
 356         obuf[0] = keycode;
 357         /* NOTE: the power key key-up is the two byte sequence 0xff 0xff;
 358          * otherwise we could in theory send a second keycode in the second
 359          * byte, but choose not to bother.
 360          */
 361         obuf[1] = 0xff;
 362         olen = 2;
 363     }
 364
 365     return olen;
 366 }
 367
 368 static int adb_kbd_request(ADBDevice *d, uint8_t *obuf,
 369                            const uint8_t *buf, int len)
 370 {
 371     KBDState *s = ADB_KEYBOARD(d);
 372     int cmd, reg, olen;
 373
 374     if ((buf[0] & 0x0f) == ADB_FLUSH) {
 375         /* flush keyboard fifo */
 376         s->wptr = s->rptr = s->count = 0;
 377         return 0;
 378     }
 379
 380     cmd = buf[0] & 0xc;
 381     reg = buf[0] & 0x3;
 382     olen = 0;
 383     switch(cmd) {
 384     case ADB_WRITEREG:
 385         switch(reg) {
 386         case 2:
 387             /* LED status */
 388             break;
 389         case 3:
 390             switch(buf[2]) {
 391             case ADB_CMD_SELF_TEST:
 392                 break;
 393             case ADB_CMD_CHANGE_ID:
 394             case ADB_CMD_CHANGE_ID_AND_ACT:
 395             case ADB_CMD_CHANGE_ID_AND_ENABLE:
 396                 d->devaddr = buf[1] & 0xf;
 397                 break;
 398             default:
 399                 /* XXX: check this */
 400                 d->devaddr = buf[1] & 0xf;
 401                 d->handler = buf[2];
 402                 break;
 403             }
 404         }
 405         break;
 406     case ADB_READREG:
 407         switch(reg) {
 408         case 0:
 409             olen = adb_kbd_poll(d, obuf);
 410             break;
 411         case 1:
 412             break;
 413         case 2:
 414             obuf[0] = 0x00; /* XXX: check this */
 415             obuf[1] = 0x07; /* led status */
 416             olen = 2;
 417             break;
 418         case 3:
 419             obuf[0] = d->handler;
 420             obuf[1] = d->devaddr;
 421             olen = 2;
 422             break;
 423         }
 424         break;
 425     }
 426     return olen;
 427 }
 428
 429 /* This is where keyboard events enter this file */
 430 static void adb_keyboard_event(DeviceState *dev, QemuConsole *src,
 431                                InputEvent *evt)
 432 {
 433     KBDState *s = (KBDState *)dev;
 434     int qcode, keycode;
 435
 436     qcode = qemu_input_key_value_to_qcode(evt->u.key.data->key);
 437     if (qcode >= ARRAY_SIZE(qcode_to_adb_keycode)) {
 438         return;
 439     }
 440     keycode = qcode_to_adb_keycode[qcode];
 441     if (keycode == NO_KEY) {  /* We don't want to send this to the guest */
 442         ADB_DPRINTF("Ignoring NO_KEY\n");
 443         return;
 444     }
 445     if (evt->u.key.data->down == false) { /* if key release event */
 446         keycode = keycode | 0x80;   /* create keyboard break code */
 447     }
 448
 449     adb_kbd_put_keycode(s, keycode);
 450 }
 451
 452 static const VMStateDescription vmstate_adb_kbd = {
 453     .name = "adb_kbd",
 454     .version_id = 2,
 455     .minimum_version_id = 2,
 456     .fields = (VMStateField[]) {
 457         VMSTATE_STRUCT(parent_obj, KBDState, 0, vmstate_adb_device, ADBDevice),
 458         VMSTATE_BUFFER(data, KBDState),
 459         VMSTATE_INT32(rptr, KBDState),
 460         VMSTATE_INT32(wptr, KBDState),
 461         VMSTATE_INT32(count, KBDState),
 462         VMSTATE_END_OF_LIST()
 463     }
 464 };
 465
 466 static void adb_kbd_reset(DeviceState *dev)
 467 {
 468     ADBDevice *d = ADB_DEVICE(dev);
 469     KBDState *s = ADB_KEYBOARD(dev);
 470
 471     d->handler = 1;
 472     d->devaddr = ADB_DEVID_KEYBOARD;
 473     memset(s->data, 0, sizeof(s->data));
 474     s->rptr = 0;
 475     s->wptr = 0;
 476     s->count = 0;
 477 }
 478
 479 static QemuInputHandler adb_keyboard_handler = {
 480     .name  = "QEMU ADB Keyboard",
 481     .mask  = INPUT_EVENT_MASK_KEY,
 482     .event = adb_keyboard_event,
 483 };
 484
 485 static void adb_kbd_realizefn(DeviceState *dev, Error **errp)
 486 {
 487     ADBKeyboardClass *akc = ADB_KEYBOARD_GET_CLASS(dev);
 488     akc->parent_realize(dev, errp);
 489     qemu_input_handler_register(dev, &adb_keyboard_handler);
 490 }
 491
 492 static void adb_kbd_initfn(Object *obj)
 493 {
 494     ADBDevice *d = ADB_DEVICE(obj);
 495
 496     d->devaddr = ADB_DEVID_KEYBOARD;
 497 }
 498
 499 static void adb_kbd_class_init(ObjectClass *oc, void *data)
 500 {
 501     DeviceClass *dc = DEVICE_CLASS(oc);
 502     ADBDeviceClass *adc = ADB_DEVICE_CLASS(oc);
 503     ADBKeyboardClass *akc = ADB_KEYBOARD_CLASS(oc);
 504
 505     akc->parent_realize = dc->realize;
 506     dc->realize = adb_kbd_realizefn;
 507     set_bit(DEVICE_CATEGORY_INPUT, dc->categories);
 508
 509     adc->devreq = adb_kbd_request;
 510     dc->reset = adb_kbd_reset;
 511     dc->vmsd = &vmstate_adb_kbd;
 512 }
 513
 514 static const TypeInfo adb_kbd_type_info = {
 515     .name = TYPE_ADB_KEYBOARD,
 516     .parent = TYPE_ADB_DEVICE,
 517     .instance_size = sizeof(KBDState),
 518     .instance_init = adb_kbd_initfn,
 519     .class_init = adb_kbd_class_init,
 520     .class_size = sizeof(ADBKeyboardClass),
 521 };
 522
 523 /***************************************************************/
 524 /* Mouse ADB device */
 525
 526 #define ADB_MOUSE(obj) OBJECT_CHECK(MouseState, (obj), TYPE_ADB_MOUSE)
 527
 528 typedef struct MouseState {
 529     /*< public >*/
 530     ADBDevice parent_obj;
 531     /*< private >*/
 532
 533     int buttons_state, last_buttons_state;
 534     int dx, dy, dz;
 535 } MouseState;
 536
 537 #define ADB_MOUSE_CLASS(class) \
 538     OBJECT_CLASS_CHECK(ADBMouseClass, (class), TYPE_ADB_MOUSE)
 539 #define ADB_MOUSE_GET_CLASS(obj) \
 540     OBJECT_GET_CLASS(ADBMouseClass, (obj), TYPE_ADB_MOUSE)
 541
 542 typedef struct ADBMouseClass {
 543     /*< public >*/
 544     ADBDeviceClass parent_class;
 545     /*< private >*/
 546
 547     DeviceRealize parent_realize;
 548 } ADBMouseClass;
 549
 550 static void adb_mouse_event(void *opaque,
 551                             int dx1, int dy1, int dz1, int buttons_state)
 552 {
 553     MouseState *s = opaque;
 554
 555     s->dx += dx1;
 556     s->dy += dy1;
 557     s->dz += dz1;
 558     s->buttons_state = buttons_state;
 559 }
 560
 561
 562 static int adb_mouse_poll(ADBDevice *d, uint8_t *obuf)
 563 {
 564     MouseState *s = ADB_MOUSE(d);
 565     int dx, dy;
 566
 567     if (s->last_buttons_state == s->buttons_state &&
 568         s->dx == 0 && s->dy == 0)
 569         return 0;
 570
 571     dx = s->dx;
 572     if (dx < -63)
 573         dx = -63;
 574     else if (dx > 63)
 575         dx = 63;
 576
 577     dy = s->dy;
 578     if (dy < -63)
 579         dy = -63;
 580     else if (dy > 63)
 581         dy = 63;
 582
 583     s->dx -= dx;
 584     s->dy -= dy;
 585     s->last_buttons_state = s->buttons_state;
 586
 587     dx &= 0x7f;
 588     dy &= 0x7f;
 589
 590     if (!(s->buttons_state & MOUSE_EVENT_LBUTTON))
 591         dy |= 0x80;
 592     if (!(s->buttons_state & MOUSE_EVENT_RBUTTON))
 593         dx |= 0x80;
 594
 595     obuf[0] = dy;
 596     obuf[1] = dx;
 597     return 2;
 598 }
 599
 600 static int adb_mouse_request(ADBDevice *d, uint8_t *obuf,
 601                              const uint8_t *buf, int len)
 602 {
 603     MouseState *s = ADB_MOUSE(d);
 604     int cmd, reg, olen;
 605
 606     if ((buf[0] & 0x0f) == ADB_FLUSH) {
 607         /* flush mouse fifo */
 608         s->buttons_state = s->last_buttons_state;
 609         s->dx = 0;
 610         s->dy = 0;
 611         s->dz = 0;
 612         return 0;
 613     }
 614
 615     cmd = buf[0] & 0xc;
 616     reg = buf[0] & 0x3;
 617     olen = 0;
 618     switch(cmd) {
 619     case ADB_WRITEREG:
 620         ADB_DPRINTF("write reg %d val 0x%2.2x\n", reg, buf[1]);
 621         switch(reg) {
 622         case 2:
 623             break;
 624         case 3:
 625             switch(buf[2]) {
 626             case ADB_CMD_SELF_TEST:
 627                 break;
 628             case ADB_CMD_CHANGE_ID:
 629             case ADB_CMD_CHANGE_ID_AND_ACT:
 630             case ADB_CMD_CHANGE_ID_AND_ENABLE:
 631                 d->devaddr = buf[1] & 0xf;
 632                 break;
 633             default:
 634                 /* XXX: check this */
 635                 d->devaddr = buf[1] & 0xf;
 636                 break;
 637             }
 638         }
 639         break;
 640     case ADB_READREG:
 641         switch(reg) {
 642         case 0:
 643             olen = adb_mouse_poll(d, obuf);
 644             break;
 645         case 1:
 646             break;
 647         case 3:
 648             obuf[0] = d->handler;
 649             obuf[1] = d->devaddr;
 650             olen = 2;
 651             break;
 652         }
 653         ADB_DPRINTF("read reg %d obuf[0] 0x%2.2x obuf[1] 0x%2.2x\n", reg,
 654                     obuf[0], obuf[1]);
 655         break;
 656     }
 657     return olen;
 658 }
 659
 660 static void adb_mouse_reset(DeviceState *dev)
 661 {
 662     ADBDevice *d = ADB_DEVICE(dev);
 663     MouseState *s = ADB_MOUSE(dev);
 664
 665     d->handler = 2;
 666     d->devaddr = ADB_DEVID_MOUSE;
 667     s->last_buttons_state = s->buttons_state = 0;
 668     s->dx = s->dy = s->dz = 0;
 669 }
 670
 671 static const VMStateDescription vmstate_adb_mouse = {
 672     .name = "adb_mouse",
 673     .version_id = 2,
 674     .minimum_version_id = 2,
 675     .fields = (VMStateField[]) {
 676         VMSTATE_STRUCT(parent_obj, MouseState, 0, vmstate_adb_device,
 677                        ADBDevice),
 678         VMSTATE_INT32(buttons_state, MouseState),
 679         VMSTATE_INT32(last_buttons_state, MouseState),
 680         VMSTATE_INT32(dx, MouseState),
 681         VMSTATE_INT32(dy, MouseState),
 682         VMSTATE_INT32(dz, MouseState),
 683         VMSTATE_END_OF_LIST()
 684     }
 685 };
 686
 687 static void adb_mouse_realizefn(DeviceState *dev, Error **errp)
 688 {
 689     MouseState *s = ADB_MOUSE(dev);
 690     ADBMouseClass *amc = ADB_MOUSE_GET_CLASS(dev);
 691
 692     amc->parent_realize(dev, errp);
 693
 694     qemu_add_mouse_event_handler(adb_mouse_event, s, 0, "QEMU ADB Mouse");
 695 }
 696
 697 static void adb_mouse_initfn(Object *obj)
 698 {
 699     ADBDevice *d = ADB_DEVICE(obj);
 700
 701     d->devaddr = ADB_DEVID_MOUSE;
 702 }
 703
 704 static void adb_mouse_class_init(ObjectClass *oc, void *data)
 705 {
 706     DeviceClass *dc = DEVICE_CLASS(oc);
 707     ADBDeviceClass *adc = ADB_DEVICE_CLASS(oc);
 708     ADBMouseClass *amc = ADB_MOUSE_CLASS(oc);
 709
 710     amc->parent_realize = dc->realize;
 711     dc->realize = adb_mouse_realizefn;
 712     set_bit(DEVICE_CATEGORY_INPUT, dc->categories);
 713
 714     adc->devreq = adb_mouse_request;
 715     dc->reset = adb_mouse_reset;
 716     dc->vmsd = &vmstate_adb_mouse;
 717 }
 718
 719 static const TypeInfo adb_mouse_type_info = {
 720     .name = TYPE_ADB_MOUSE,
 721     .parent = TYPE_ADB_DEVICE,
 722     .instance_size = sizeof(MouseState),
 723     .instance_init = adb_mouse_initfn,
 724     .class_init = adb_mouse_class_init,
 725     .class_size = sizeof(ADBMouseClass),
 726 };
 727
 728
 729 static void adb_register_types(void)
 730 {
 731     type_register_static(&adb_bus_type_info);
 732     type_register_static(&adb_device_type_info);
 733     type_register_static(&adb_kbd_type_info);
 734     type_register_static(&adb_mouse_type_info);
 735 }
 736
 737 type_init(adb_register_types)