adb-kbd.c (13421B)
1 /* 2 * QEMU ADB keyboard 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 25 #include "qemu/osdep.h" 26 #include "hw/input/adb.h" 27 #include "migration/vmstate.h" 28 #include "qemu/module.h" 29 #include "ui/input.h" 30 #include "hw/input/adb-keys.h" 31 #include "adb-internal.h" 32 #include "trace.h" 33 #include "qom/object.h" 34 35 OBJECT_DECLARE_TYPE(KBDState, ADBKeyboardClass, ADB_KEYBOARD) 36 37 struct KBDState { 38 /*< private >*/ 39 ADBDevice parent_obj; 40 /*< public >*/ 41 42 uint8_t data[128]; 43 int rptr, wptr, count; 44 }; 45 46 47 struct ADBKeyboardClass { 48 /*< private >*/ 49 ADBDeviceClass parent_class; 50 /*< public >*/ 51 52 DeviceRealize parent_realize; 53 }; 54 55 /* The adb keyboard doesn't have every key imaginable */ 56 #define NO_KEY 0xff 57 58 int qcode_to_adb_keycode[] = { 59 /* Make sure future additions are automatically set to NO_KEY */ 60 [0 ... 0xff] = NO_KEY, 61 62 [Q_KEY_CODE_SHIFT] = ADB_KEY_LEFT_SHIFT, 63 [Q_KEY_CODE_SHIFT_R] = ADB_KEY_RIGHT_SHIFT, 64 [Q_KEY_CODE_ALT] = ADB_KEY_LEFT_OPTION, 65 [Q_KEY_CODE_ALT_R] = ADB_KEY_RIGHT_OPTION, 66 [Q_KEY_CODE_CTRL] = ADB_KEY_LEFT_CONTROL, 67 [Q_KEY_CODE_CTRL_R] = ADB_KEY_RIGHT_CONTROL, 68 [Q_KEY_CODE_META_L] = ADB_KEY_COMMAND, 69 [Q_KEY_CODE_META_R] = ADB_KEY_COMMAND, 70 [Q_KEY_CODE_SPC] = ADB_KEY_SPACEBAR, 71 72 [Q_KEY_CODE_ESC] = ADB_KEY_ESC, 73 [Q_KEY_CODE_1] = ADB_KEY_1, 74 [Q_KEY_CODE_2] = ADB_KEY_2, 75 [Q_KEY_CODE_3] = ADB_KEY_3, 76 [Q_KEY_CODE_4] = ADB_KEY_4, 77 [Q_KEY_CODE_5] = ADB_KEY_5, 78 [Q_KEY_CODE_6] = ADB_KEY_6, 79 [Q_KEY_CODE_7] = ADB_KEY_7, 80 [Q_KEY_CODE_8] = ADB_KEY_8, 81 [Q_KEY_CODE_9] = ADB_KEY_9, 82 [Q_KEY_CODE_0] = ADB_KEY_0, 83 [Q_KEY_CODE_MINUS] = ADB_KEY_MINUS, 84 [Q_KEY_CODE_EQUAL] = ADB_KEY_EQUAL, 85 [Q_KEY_CODE_BACKSPACE] = ADB_KEY_DELETE, 86 [Q_KEY_CODE_TAB] = ADB_KEY_TAB, 87 [Q_KEY_CODE_Q] = ADB_KEY_Q, 88 [Q_KEY_CODE_W] = ADB_KEY_W, 89 [Q_KEY_CODE_E] = ADB_KEY_E, 90 [Q_KEY_CODE_R] = ADB_KEY_R, 91 [Q_KEY_CODE_T] = ADB_KEY_T, 92 [Q_KEY_CODE_Y] = ADB_KEY_Y, 93 [Q_KEY_CODE_U] = ADB_KEY_U, 94 [Q_KEY_CODE_I] = ADB_KEY_I, 95 [Q_KEY_CODE_O] = ADB_KEY_O, 96 [Q_KEY_CODE_P] = ADB_KEY_P, 97 [Q_KEY_CODE_BRACKET_LEFT] = ADB_KEY_LEFT_BRACKET, 98 [Q_KEY_CODE_BRACKET_RIGHT] = ADB_KEY_RIGHT_BRACKET, 99 [Q_KEY_CODE_RET] = ADB_KEY_RETURN, 100 [Q_KEY_CODE_A] = ADB_KEY_A, 101 [Q_KEY_CODE_S] = ADB_KEY_S, 102 [Q_KEY_CODE_D] = ADB_KEY_D, 103 [Q_KEY_CODE_F] = ADB_KEY_F, 104 [Q_KEY_CODE_G] = ADB_KEY_G, 105 [Q_KEY_CODE_H] = ADB_KEY_H, 106 [Q_KEY_CODE_J] = ADB_KEY_J, 107 [Q_KEY_CODE_K] = ADB_KEY_K, 108 [Q_KEY_CODE_L] = ADB_KEY_L, 109 [Q_KEY_CODE_SEMICOLON] = ADB_KEY_SEMICOLON, 110 [Q_KEY_CODE_APOSTROPHE] = ADB_KEY_APOSTROPHE, 111 [Q_KEY_CODE_GRAVE_ACCENT] = ADB_KEY_GRAVE_ACCENT, 112 [Q_KEY_CODE_BACKSLASH] = ADB_KEY_BACKSLASH, 113 [Q_KEY_CODE_Z] = ADB_KEY_Z, 114 [Q_KEY_CODE_X] = ADB_KEY_X, 115 [Q_KEY_CODE_C] = ADB_KEY_C, 116 [Q_KEY_CODE_V] = ADB_KEY_V, 117 [Q_KEY_CODE_B] = ADB_KEY_B, 118 [Q_KEY_CODE_N] = ADB_KEY_N, 119 [Q_KEY_CODE_M] = ADB_KEY_M, 120 [Q_KEY_CODE_COMMA] = ADB_KEY_COMMA, 121 [Q_KEY_CODE_DOT] = ADB_KEY_PERIOD, 122 [Q_KEY_CODE_SLASH] = ADB_KEY_FORWARD_SLASH, 123 [Q_KEY_CODE_ASTERISK] = ADB_KEY_KP_MULTIPLY, 124 [Q_KEY_CODE_CAPS_LOCK] = ADB_KEY_CAPS_LOCK, 125 126 [Q_KEY_CODE_F1] = ADB_KEY_F1, 127 [Q_KEY_CODE_F2] = ADB_KEY_F2, 128 [Q_KEY_CODE_F3] = ADB_KEY_F3, 129 [Q_KEY_CODE_F4] = ADB_KEY_F4, 130 [Q_KEY_CODE_F5] = ADB_KEY_F5, 131 [Q_KEY_CODE_F6] = ADB_KEY_F6, 132 [Q_KEY_CODE_F7] = ADB_KEY_F7, 133 [Q_KEY_CODE_F8] = ADB_KEY_F8, 134 [Q_KEY_CODE_F9] = ADB_KEY_F9, 135 [Q_KEY_CODE_F10] = ADB_KEY_F10, 136 [Q_KEY_CODE_F11] = ADB_KEY_F11, 137 [Q_KEY_CODE_F12] = ADB_KEY_F12, 138 [Q_KEY_CODE_PRINT] = ADB_KEY_F13, 139 [Q_KEY_CODE_SYSRQ] = ADB_KEY_F13, 140 [Q_KEY_CODE_SCROLL_LOCK] = ADB_KEY_F14, 141 [Q_KEY_CODE_PAUSE] = ADB_KEY_F15, 142 143 [Q_KEY_CODE_NUM_LOCK] = ADB_KEY_KP_CLEAR, 144 [Q_KEY_CODE_KP_EQUALS] = ADB_KEY_KP_EQUAL, 145 [Q_KEY_CODE_KP_DIVIDE] = ADB_KEY_KP_DIVIDE, 146 [Q_KEY_CODE_KP_MULTIPLY] = ADB_KEY_KP_MULTIPLY, 147 [Q_KEY_CODE_KP_SUBTRACT] = ADB_KEY_KP_SUBTRACT, 148 [Q_KEY_CODE_KP_ADD] = ADB_KEY_KP_PLUS, 149 [Q_KEY_CODE_KP_ENTER] = ADB_KEY_KP_ENTER, 150 [Q_KEY_CODE_KP_DECIMAL] = ADB_KEY_KP_PERIOD, 151 [Q_KEY_CODE_KP_0] = ADB_KEY_KP_0, 152 [Q_KEY_CODE_KP_1] = ADB_KEY_KP_1, 153 [Q_KEY_CODE_KP_2] = ADB_KEY_KP_2, 154 [Q_KEY_CODE_KP_3] = ADB_KEY_KP_3, 155 [Q_KEY_CODE_KP_4] = ADB_KEY_KP_4, 156 [Q_KEY_CODE_KP_5] = ADB_KEY_KP_5, 157 [Q_KEY_CODE_KP_6] = ADB_KEY_KP_6, 158 [Q_KEY_CODE_KP_7] = ADB_KEY_KP_7, 159 [Q_KEY_CODE_KP_8] = ADB_KEY_KP_8, 160 [Q_KEY_CODE_KP_9] = ADB_KEY_KP_9, 161 162 [Q_KEY_CODE_UP] = ADB_KEY_UP, 163 [Q_KEY_CODE_DOWN] = ADB_KEY_DOWN, 164 [Q_KEY_CODE_LEFT] = ADB_KEY_LEFT, 165 [Q_KEY_CODE_RIGHT] = ADB_KEY_RIGHT, 166 167 [Q_KEY_CODE_HELP] = ADB_KEY_HELP, 168 [Q_KEY_CODE_INSERT] = ADB_KEY_HELP, 169 [Q_KEY_CODE_DELETE] = ADB_KEY_FORWARD_DELETE, 170 [Q_KEY_CODE_HOME] = ADB_KEY_HOME, 171 [Q_KEY_CODE_END] = ADB_KEY_END, 172 [Q_KEY_CODE_PGUP] = ADB_KEY_PAGE_UP, 173 [Q_KEY_CODE_PGDN] = ADB_KEY_PAGE_DOWN, 174 175 [Q_KEY_CODE_POWER] = ADB_KEY_POWER 176 }; 177 178 static void adb_kbd_put_keycode(void *opaque, int keycode) 179 { 180 KBDState *s = opaque; 181 182 if (s->count < sizeof(s->data)) { 183 s->data[s->wptr] = keycode; 184 if (++s->wptr == sizeof(s->data)) { 185 s->wptr = 0; 186 } 187 s->count++; 188 } 189 } 190 191 static int adb_kbd_poll(ADBDevice *d, uint8_t *obuf) 192 { 193 KBDState *s = ADB_KEYBOARD(d); 194 int keycode; 195 196 if (s->count == 0) { 197 return 0; 198 } 199 keycode = s->data[s->rptr]; 200 s->rptr++; 201 if (s->rptr == sizeof(s->data)) { 202 s->rptr = 0; 203 } 204 s->count--; 205 /* 206 * The power key is the only two byte value key, so it is a special case. 207 * Since 0x7f is not a used keycode for ADB we overload it to indicate the 208 * power button when we're storing keycodes in our internal buffer, and 209 * expand it out to two bytes when we send to the guest. 210 */ 211 if (keycode == 0x7f) { 212 obuf[0] = 0x7f; 213 obuf[1] = 0x7f; 214 } else { 215 obuf[0] = keycode; 216 /* NOTE: the power key key-up is the two byte sequence 0xff 0xff; 217 * otherwise we could in theory send a second keycode in the second 218 * byte, but choose not to bother. 219 */ 220 obuf[1] = 0xff; 221 } 222 223 return 2; 224 } 225 226 static int adb_kbd_request(ADBDevice *d, uint8_t *obuf, 227 const uint8_t *buf, int len) 228 { 229 KBDState *s = ADB_KEYBOARD(d); 230 int cmd, reg, olen; 231 232 if ((buf[0] & 0x0f) == ADB_FLUSH) { 233 /* flush keyboard fifo */ 234 s->wptr = s->rptr = s->count = 0; 235 return 0; 236 } 237 238 cmd = buf[0] & 0xc; 239 reg = buf[0] & 0x3; 240 olen = 0; 241 switch (cmd) { 242 case ADB_WRITEREG: 243 trace_adb_device_kbd_writereg(reg, buf[1]); 244 switch (reg) { 245 case 2: 246 /* LED status */ 247 break; 248 case 3: 249 switch (buf[2]) { 250 case ADB_CMD_SELF_TEST: 251 break; 252 case ADB_CMD_CHANGE_ID: 253 case ADB_CMD_CHANGE_ID_AND_ACT: 254 case ADB_CMD_CHANGE_ID_AND_ENABLE: 255 d->devaddr = buf[1] & 0xf; 256 trace_adb_device_kbd_request_change_addr(d->devaddr); 257 break; 258 default: 259 d->devaddr = buf[1] & 0xf; 260 /* 261 * we support handlers: 262 * 1: Apple Standard Keyboard 263 * 2: Apple Extended Keyboard (LShift = RShift) 264 * 3: Apple Extended Keyboard (LShift != RShift) 265 */ 266 if (buf[2] == 1 || buf[2] == 2 || buf[2] == 3) { 267 d->handler = buf[2]; 268 } 269 270 trace_adb_device_kbd_request_change_addr_and_handler( 271 d->devaddr, d->handler); 272 break; 273 } 274 } 275 break; 276 case ADB_READREG: 277 switch (reg) { 278 case 0: 279 olen = adb_kbd_poll(d, obuf); 280 break; 281 case 1: 282 break; 283 case 2: 284 obuf[0] = 0x00; /* XXX: check this */ 285 obuf[1] = 0x07; /* led status */ 286 olen = 2; 287 break; 288 case 3: 289 obuf[0] = d->devaddr; 290 obuf[1] = d->handler; 291 olen = 2; 292 break; 293 } 294 trace_adb_device_kbd_readreg(reg, obuf[0], obuf[1]); 295 break; 296 } 297 return olen; 298 } 299 300 static bool adb_kbd_has_data(ADBDevice *d) 301 { 302 KBDState *s = ADB_KEYBOARD(d); 303 304 return s->count > 0; 305 } 306 307 /* This is where keyboard events enter this file */ 308 static void adb_keyboard_event(DeviceState *dev, QemuConsole *src, 309 InputEvent *evt) 310 { 311 KBDState *s = (KBDState *)dev; 312 int qcode, keycode; 313 314 qcode = qemu_input_key_value_to_qcode(evt->u.key.data->key); 315 if (qcode >= ARRAY_SIZE(qcode_to_adb_keycode)) { 316 return; 317 } 318 /* FIXME: take handler into account when translating qcode */ 319 keycode = qcode_to_adb_keycode[qcode]; 320 if (keycode == NO_KEY) { /* We don't want to send this to the guest */ 321 trace_adb_device_kbd_no_key(); 322 return; 323 } 324 if (evt->u.key.data->down == false) { /* if key release event */ 325 keycode = keycode | 0x80; /* create keyboard break code */ 326 } 327 328 adb_kbd_put_keycode(s, keycode); 329 } 330 331 static const VMStateDescription vmstate_adb_kbd = { 332 .name = "adb_kbd", 333 .version_id = 2, 334 .minimum_version_id = 2, 335 .fields = (VMStateField[]) { 336 VMSTATE_STRUCT(parent_obj, KBDState, 0, vmstate_adb_device, ADBDevice), 337 VMSTATE_BUFFER(data, KBDState), 338 VMSTATE_INT32(rptr, KBDState), 339 VMSTATE_INT32(wptr, KBDState), 340 VMSTATE_INT32(count, KBDState), 341 VMSTATE_END_OF_LIST() 342 } 343 }; 344 345 static void adb_kbd_reset(DeviceState *dev) 346 { 347 ADBDevice *d = ADB_DEVICE(dev); 348 KBDState *s = ADB_KEYBOARD(dev); 349 350 d->handler = 1; 351 d->devaddr = ADB_DEVID_KEYBOARD; 352 memset(s->data, 0, sizeof(s->data)); 353 s->rptr = 0; 354 s->wptr = 0; 355 s->count = 0; 356 } 357 358 static QemuInputHandler adb_keyboard_handler = { 359 .name = "QEMU ADB Keyboard", 360 .mask = INPUT_EVENT_MASK_KEY, 361 .event = adb_keyboard_event, 362 }; 363 364 static void adb_kbd_realizefn(DeviceState *dev, Error **errp) 365 { 366 ADBKeyboardClass *akc = ADB_KEYBOARD_GET_CLASS(dev); 367 akc->parent_realize(dev, errp); 368 qemu_input_handler_register(dev, &adb_keyboard_handler); 369 } 370 371 static void adb_kbd_initfn(Object *obj) 372 { 373 ADBDevice *d = ADB_DEVICE(obj); 374 375 d->devaddr = ADB_DEVID_KEYBOARD; 376 } 377 378 static void adb_kbd_class_init(ObjectClass *oc, void *data) 379 { 380 DeviceClass *dc = DEVICE_CLASS(oc); 381 ADBDeviceClass *adc = ADB_DEVICE_CLASS(oc); 382 ADBKeyboardClass *akc = ADB_KEYBOARD_CLASS(oc); 383 384 device_class_set_parent_realize(dc, adb_kbd_realizefn, 385 &akc->parent_realize); 386 set_bit(DEVICE_CATEGORY_INPUT, dc->categories); 387 388 adc->devreq = adb_kbd_request; 389 adc->devhasdata = adb_kbd_has_data; 390 dc->reset = adb_kbd_reset; 391 dc->vmsd = &vmstate_adb_kbd; 392 } 393 394 static const TypeInfo adb_kbd_type_info = { 395 .name = TYPE_ADB_KEYBOARD, 396 .parent = TYPE_ADB_DEVICE, 397 .instance_size = sizeof(KBDState), 398 .instance_init = adb_kbd_initfn, 399 .class_init = adb_kbd_class_init, 400 .class_size = sizeof(ADBKeyboardClass), 401 }; 402 403 static void adb_kbd_register_types(void) 404 { 405 type_register_static(&adb_kbd_type_info); 406 } 407 408 type_init(adb_kbd_register_types)