| 1 | /* |
| 2 | * QEMU HID devices |
| 3 | * |
| 4 | * Copyright (c) 2005 Fabrice Bellard |
| 5 | * Copyright (c) 2007 OpenMoko, Inc. (andrew@openedhand.com) |
| 6 | * |
| 7 | * Permission is hereby granted, free of charge, to any person obtaining a copy |
| 8 | * of this software and associated documentation files (the "Software"), to deal |
| 9 | * in the Software without restriction, including without limitation the rights |
| 10 | * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell |
| 11 | * copies of the Software, and to permit persons to whom the Software is |
| 12 | * furnished to do so, subject to the following conditions: |
| 13 | * |
| 14 | * The above copyright notice and this permission notice shall be included in |
| 15 | * all copies or substantial portions of the Software. |
| 16 | * |
| 17 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
| 18 | * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
| 19 | * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL |
| 20 | * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER |
| 21 | * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, |
| 22 | * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN |
| 23 | * THE SOFTWARE. |
| 24 | */ |
| 25 | |
| 26 | #include "qemu/osdep.h" |
| 27 | #include "ui/console.h" |
| 28 | #include "ui/input.h" |
| 29 | #include "qemu/timer.h" |
| 30 | #include "hw/input/hid.h" |
| 31 | #include "migration/vmstate.h" |
| 32 | #include "trace.h" |
| 33 | |
| 34 | #define HID_USAGE_ERROR_ROLLOVER 0x01 |
| 35 | #define HID_USAGE_POSTFAIL 0x02 |
| 36 | #define HID_USAGE_ERROR_UNDEFINED 0x03 |
| 37 | |
| 38 | /* Indices are QEMU keycodes, values are from HID Usage Table. Indices |
| 39 | * above 0x80 are for keys that come after 0xe0 or 0xe1+0x1d or 0xe1+0x9d. */ |
| 40 | static const uint8_t hid_usage_keys[0x100] = { |
| 41 | 0x00, 0x29, 0x1e, 0x1f, 0x20, 0x21, 0x22, 0x23, |
| 42 | 0x24, 0x25, 0x26, 0x27, 0x2d, 0x2e, 0x2a, 0x2b, |
| 43 | 0x14, 0x1a, 0x08, 0x15, 0x17, 0x1c, 0x18, 0x0c, |
| 44 | 0x12, 0x13, 0x2f, 0x30, 0x28, 0xe0, 0x04, 0x16, |
| 45 | 0x07, 0x09, 0x0a, 0x0b, 0x0d, 0x0e, 0x0f, 0x33, |
| 46 | 0x34, 0x35, 0xe1, 0x31, 0x1d, 0x1b, 0x06, 0x19, |
| 47 | 0x05, 0x11, 0x10, 0x36, 0x37, 0x38, 0xe5, 0x55, |
| 48 | 0xe2, 0x2c, 0x39, 0x3a, 0x3b, 0x3c, 0x3d, 0x3e, |
| 49 | 0x3f, 0x40, 0x41, 0x42, 0x43, 0x53, 0x47, 0x5f, |
| 50 | 0x60, 0x61, 0x56, 0x5c, 0x5d, 0x5e, 0x57, 0x59, |
| 51 | 0x5a, 0x5b, 0x62, 0x63, 0x46, 0x00, 0x64, 0x44, |
| 52 | 0x45, 0x68, 0x69, 0x6a, 0x6b, 0x6c, 0x6d, 0x6e, |
| 53 | 0xe8, 0xe9, 0x71, 0x72, 0x73, 0x00, 0x00, 0x00, |
| 54 | 0x00, 0x00, 0x00, 0x85, 0x00, 0x00, 0x00, 0x00, |
| 55 | 0x88, 0x00, 0x00, 0x87, 0x00, 0x00, 0x00, 0x00, |
| 56 | 0x00, 0x8a, 0x00, 0x8b, 0x00, 0x89, 0xe7, 0x65, |
| 57 | |
| 58 | 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, |
| 59 | 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, |
| 60 | 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, |
| 61 | 0x00, 0x00, 0x00, 0x00, 0x58, 0xe4, 0x00, 0x00, |
| 62 | 0x7f, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, |
| 63 | 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x81, 0x00, |
| 64 | 0x80, 0x00, 0x00, 0x00, 0x00, 0x54, 0x00, 0x46, |
| 65 | 0xe6, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, |
| 66 | 0x00, 0x00, 0x00, 0x00, 0x00, 0x48, 0x48, 0x4a, |
| 67 | 0x52, 0x4b, 0x00, 0x50, 0x00, 0x4f, 0x00, 0x4d, |
| 68 | 0x51, 0x4e, 0x49, 0x4c, 0x00, 0x00, 0x00, 0x00, |
| 69 | 0x00, 0x00, 0x00, 0xe3, 0xe7, 0x65, 0x66, 0x00, |
| 70 | 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, |
| 71 | 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, |
| 72 | 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, |
| 73 | 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, |
| 74 | }; |
| 75 | |
| 76 | bool hid_has_events(HIDState *hs) |
| 77 | { |
| 78 | return hs->n > 0 || hs->idle_pending; |
| 79 | } |
| 80 | |
| 81 | static void hid_idle_timer(void *opaque) |
| 82 | { |
| 83 | HIDState *hs = opaque; |
| 84 | |
| 85 | hs->idle_pending = true; |
| 86 | hs->event(hs); |
| 87 | } |
| 88 | |
| 89 | static void hid_del_idle_timer(HIDState *hs) |
| 90 | { |
| 91 | if (hs->idle_timer) { |
| 92 | timer_free(hs->idle_timer); |
| 93 | hs->idle_timer = NULL; |
| 94 | } |
| 95 | } |
| 96 | |
| 97 | void hid_set_next_idle(HIDState *hs) |
| 98 | { |
| 99 | if (hs->idle) { |
| 100 | uint64_t expire_time = qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL) + |
| 101 | NANOSECONDS_PER_SECOND * hs->idle * 4 / 1000; |
| 102 | if (!hs->idle_timer) { |
| 103 | hs->idle_timer = timer_new_ns(QEMU_CLOCK_VIRTUAL, hid_idle_timer, hs); |
| 104 | } |
| 105 | timer_mod_ns(hs->idle_timer, expire_time); |
| 106 | } else { |
| 107 | hid_del_idle_timer(hs); |
| 108 | } |
| 109 | } |
| 110 | |
| 111 | static void hid_pointer_event(DeviceState *dev, QemuConsole *src, |
| 112 | QemuInputEvent *evt) |
| 113 | { |
| 114 | static const int bmap[INPUT_BUTTON__MAX] = { |
| 115 | [INPUT_BUTTON_LEFT] = 0x01, |
| 116 | [INPUT_BUTTON_RIGHT] = 0x02, |
| 117 | [INPUT_BUTTON_MIDDLE] = 0x04, |
| 118 | [INPUT_BUTTON_SIDE] = 0x08, |
| 119 | [INPUT_BUTTON_EXTRA] = 0x10, |
| 120 | }; |
| 121 | HIDState *hs = (HIDState *)dev; |
| 122 | HIDPointerEvent *e; |
| 123 | |
| 124 | assert(hs->n < QUEUE_LENGTH); |
| 125 | e = &hs->ptr.queue[(hs->head + hs->n) & QUEUE_MASK]; |
| 126 | |
| 127 | switch (evt->type) { |
| 128 | case INPUT_EVENT_KIND_REL: |
| 129 | if (evt->rel.axis == INPUT_AXIS_X) { |
| 130 | e->xdx += evt->rel.value; |
| 131 | } else if (evt->rel.axis == INPUT_AXIS_Y) { |
| 132 | e->ydy += evt->rel.value; |
| 133 | } |
| 134 | break; |
| 135 | |
| 136 | case INPUT_EVENT_KIND_ABS: |
| 137 | if (evt->abs.axis == INPUT_AXIS_X) { |
| 138 | e->xdx = evt->abs.value; |
| 139 | } else if (evt->abs.axis == INPUT_AXIS_Y) { |
| 140 | e->ydy = evt->abs.value; |
| 141 | } |
| 142 | break; |
| 143 | |
| 144 | case INPUT_EVENT_KIND_BTN: |
| 145 | if (evt->btn.down) { |
| 146 | e->buttons_state |= bmap[evt->btn.button]; |
| 147 | if (evt->btn.button == INPUT_BUTTON_WHEEL_UP) { |
| 148 | e->dz--; |
| 149 | } else if (evt->btn.button == INPUT_BUTTON_WHEEL_DOWN) { |
| 150 | e->dz++; |
| 151 | } |
| 152 | } else { |
| 153 | e->buttons_state &= ~bmap[evt->btn.button]; |
| 154 | } |
| 155 | break; |
| 156 | |
| 157 | default: |
| 158 | /* keep gcc happy */ |
| 159 | break; |
| 160 | } |
| 161 | |
| 162 | } |
| 163 | |
| 164 | static void hid_pointer_sync(DeviceState *dev) |
| 165 | { |
| 166 | HIDState *hs = (HIDState *)dev; |
| 167 | HIDPointerEvent *prev, *curr, *next; |
| 168 | bool event_compression = false; |
| 169 | |
| 170 | if (hs->n == QUEUE_LENGTH-1) { |
| 171 | /* |
| 172 | * Queue full. We are losing information, but we at least |
| 173 | * keep track of most recent button state. |
| 174 | */ |
| 175 | return; |
| 176 | } |
| 177 | |
| 178 | prev = &hs->ptr.queue[(hs->head + hs->n - 1) & QUEUE_MASK]; |
| 179 | curr = &hs->ptr.queue[(hs->head + hs->n) & QUEUE_MASK]; |
| 180 | next = &hs->ptr.queue[(hs->head + hs->n + 1) & QUEUE_MASK]; |
| 181 | |
| 182 | if (hs->n > 0) { |
| 183 | /* |
| 184 | * No button state change between previous and current event |
| 185 | * (and previous wasn't seen by the guest yet), so there is |
| 186 | * motion information only and we can combine the two event |
| 187 | * into one. |
| 188 | */ |
| 189 | if (curr->buttons_state == prev->buttons_state) { |
| 190 | event_compression = true; |
| 191 | } |
| 192 | } |
| 193 | |
| 194 | if (event_compression) { |
| 195 | /* add current motion to previous, clear current */ |
| 196 | if (hs->kind == HID_MOUSE) { |
| 197 | prev->xdx += curr->xdx; |
| 198 | curr->xdx = 0; |
| 199 | prev->ydy += curr->ydy; |
| 200 | curr->ydy = 0; |
| 201 | } else { |
| 202 | prev->xdx = curr->xdx; |
| 203 | prev->ydy = curr->ydy; |
| 204 | } |
| 205 | prev->dz += curr->dz; |
| 206 | curr->dz = 0; |
| 207 | } else { |
| 208 | /* prepare next (clear rel, copy abs + btns) */ |
| 209 | if (hs->kind == HID_MOUSE) { |
| 210 | next->xdx = 0; |
| 211 | next->ydy = 0; |
| 212 | } else { |
| 213 | next->xdx = curr->xdx; |
| 214 | next->ydy = curr->ydy; |
| 215 | } |
| 216 | next->dz = 0; |
| 217 | next->buttons_state = curr->buttons_state; |
| 218 | /* make current guest visible, notify guest */ |
| 219 | hs->n++; |
| 220 | hs->event(hs); |
| 221 | } |
| 222 | } |
| 223 | |
| 224 | static void hid_keyboard_event(DeviceState *dev, QemuConsole *src, |
| 225 | QemuInputEvent *evt) |
| 226 | { |
| 227 | HIDState *hs = (HIDState *)dev; |
| 228 | int scancodes[3], i, count; |
| 229 | int slot; |
| 230 | |
| 231 | count = qemu_input_linux_to_scancode(evt->key.key, evt->key.down, |
| 232 | scancodes); |
| 233 | if (hs->n + count > QUEUE_LENGTH) { |
| 234 | trace_hid_kbd_queue_full(); |
| 235 | return; |
| 236 | } |
| 237 | for (i = 0; i < count; i++) { |
| 238 | slot = (hs->head + hs->n) & QUEUE_MASK; hs->n++; |
| 239 | hs->kbd.keycodes[slot] = scancodes[i]; |
| 240 | } |
| 241 | hs->event(hs); |
| 242 | } |
| 243 | |
| 244 | static void hid_keyboard_process_keycode(HIDState *hs) |
| 245 | { |
| 246 | uint8_t hid_code, index, key; |
| 247 | int i, keycode, slot; |
| 248 | |
| 249 | if (hs->n == 0) { |
| 250 | return; |
| 251 | } |
| 252 | slot = hs->head & QUEUE_MASK; QUEUE_INCR(hs->head); hs->n--; |
| 253 | keycode = hs->kbd.keycodes[slot]; |
| 254 | |
| 255 | if (!hs->n) { |
| 256 | trace_hid_kbd_queue_empty(); |
| 257 | } |
| 258 | |
| 259 | key = keycode & 0x7f; |
| 260 | index = key | ((hs->kbd.modifiers & (1 << 8)) >> 1); |
| 261 | hid_code = hid_usage_keys[index]; |
| 262 | hs->kbd.modifiers &= ~(1 << 8); |
| 263 | |
| 264 | switch (hid_code) { |
| 265 | case 0x00: |
| 266 | return; |
| 267 | |
| 268 | case 0xe0: |
| 269 | assert(key == 0x1d); |
| 270 | if (hs->kbd.modifiers & (1 << 9)) { |
| 271 | /* The hid_codes for the 0xe1/0x1d scancode sequence are 0xe9/0xe0. |
| 272 | * Here we're processing the second hid_code. By dropping bit 9 |
| 273 | * and setting bit 8, the scancode after 0x1d will access the |
| 274 | * second half of the table. |
| 275 | */ |
| 276 | hs->kbd.modifiers ^= (1 << 8) | (1 << 9); |
| 277 | return; |
| 278 | } |
| 279 | /* fall through to process Ctrl_L */ |
| 280 | case 0xe1 ... 0xe7: |
| 281 | /* Ctrl_L/Ctrl_R, Shift_L/Shift_R, Alt_L/Alt_R, Win_L/Win_R. |
| 282 | * Handle releases here, or fall through to process presses. |
| 283 | */ |
| 284 | if (keycode & (1 << 7)) { |
| 285 | hs->kbd.modifiers &= ~(1 << (hid_code & 0x0f)); |
| 286 | return; |
| 287 | } |
| 288 | /* fall through */ |
| 289 | case 0xe8 ... 0xe9: |
| 290 | /* USB modifiers are just 1 byte long. Bits 8 and 9 of |
| 291 | * hs->kbd.modifiers implement a state machine that detects the |
| 292 | * 0xe0 and 0xe1/0x1d sequences. These bits do not follow the |
| 293 | * usual rules where bit 7 marks released keys; they are cleared |
| 294 | * elsewhere in the function as the state machine dictates. |
| 295 | */ |
| 296 | hs->kbd.modifiers |= 1 << (hid_code & 0x0f); |
| 297 | return; |
| 298 | |
| 299 | case 0xea ... 0xef: |
| 300 | abort(); |
| 301 | |
| 302 | default: |
| 303 | break; |
| 304 | } |
| 305 | |
| 306 | if (keycode & (1 << 7)) { |
| 307 | for (i = hs->kbd.keys - 1; i >= 0; i--) { |
| 308 | if (hs->kbd.key[i] == hid_code) { |
| 309 | hs->kbd.key[i] = hs->kbd.key[-- hs->kbd.keys]; |
| 310 | hs->kbd.key[hs->kbd.keys] = 0x00; |
| 311 | break; |
| 312 | } |
| 313 | } |
| 314 | if (i < 0) { |
| 315 | return; |
| 316 | } |
| 317 | } else { |
| 318 | for (i = hs->kbd.keys - 1; i >= 0; i--) { |
| 319 | if (hs->kbd.key[i] == hid_code) { |
| 320 | break; |
| 321 | } |
| 322 | } |
| 323 | if (i < 0) { |
| 324 | if (hs->kbd.keys < sizeof(hs->kbd.key)) { |
| 325 | hs->kbd.key[hs->kbd.keys++] = hid_code; |
| 326 | } |
| 327 | } else { |
| 328 | return; |
| 329 | } |
| 330 | } |
| 331 | } |
| 332 | |
| 333 | static inline int int_clamp(int val, int vmin, int vmax) |
| 334 | { |
| 335 | if (val < vmin) { |
| 336 | return vmin; |
| 337 | } else if (val > vmax) { |
| 338 | return vmax; |
| 339 | } else { |
| 340 | return val; |
| 341 | } |
| 342 | } |
| 343 | |
| 344 | void hid_pointer_activate(HIDState *hs) |
| 345 | { |
| 346 | if (!hs->ptr.mouse_grabbed) { |
| 347 | qemu_input_handler_activate(hs->s); |
| 348 | hs->ptr.mouse_grabbed = 1; |
| 349 | } |
| 350 | } |
| 351 | |
| 352 | int hid_pointer_poll(HIDState *hs, uint8_t *buf, int len) |
| 353 | { |
| 354 | int dx, dy, dz, l; |
| 355 | int index; |
| 356 | HIDPointerEvent *e; |
| 357 | |
| 358 | hs->idle_pending = false; |
| 359 | |
| 360 | hid_pointer_activate(hs); |
| 361 | |
| 362 | /* When the buffer is empty, return the last event. Relative |
| 363 | movements will all be zero. */ |
| 364 | index = (hs->n ? hs->head : hs->head - 1); |
| 365 | e = &hs->ptr.queue[index & QUEUE_MASK]; |
| 366 | |
| 367 | if (hs->kind == HID_MOUSE) { |
| 368 | dx = int_clamp(e->xdx, -127, 127); |
| 369 | dy = int_clamp(e->ydy, -127, 127); |
| 370 | e->xdx -= dx; |
| 371 | e->ydy -= dy; |
| 372 | } else { |
| 373 | dx = e->xdx; |
| 374 | dy = e->ydy; |
| 375 | } |
| 376 | dz = int_clamp(e->dz, -127, 127); |
| 377 | e->dz -= dz; |
| 378 | |
| 379 | if (hs->n && |
| 380 | !e->dz && |
| 381 | (hs->kind == HID_TABLET || (!e->xdx && !e->ydy))) { |
| 382 | /* that deals with this event */ |
| 383 | QUEUE_INCR(hs->head); |
| 384 | hs->n--; |
| 385 | } |
| 386 | |
| 387 | /* Appears we have to invert the wheel direction */ |
| 388 | dz = 0 - dz; |
| 389 | l = 0; |
| 390 | switch (hs->kind) { |
| 391 | case HID_MOUSE: |
| 392 | if (len > l) { |
| 393 | buf[l++] = e->buttons_state; |
| 394 | } |
| 395 | if (len > l) { |
| 396 | buf[l++] = dx; |
| 397 | } |
| 398 | if (len > l) { |
| 399 | buf[l++] = dy; |
| 400 | } |
| 401 | if (len > l) { |
| 402 | buf[l++] = dz; |
| 403 | } |
| 404 | break; |
| 405 | |
| 406 | case HID_TABLET: |
| 407 | if (len > l) { |
| 408 | buf[l++] = e->buttons_state; |
| 409 | } |
| 410 | if (len > l) { |
| 411 | buf[l++] = dx & 0xff; |
| 412 | } |
| 413 | if (len > l) { |
| 414 | buf[l++] = dx >> 8; |
| 415 | } |
| 416 | if (len > l) { |
| 417 | buf[l++] = dy & 0xff; |
| 418 | } |
| 419 | if (len > l) { |
| 420 | buf[l++] = dy >> 8; |
| 421 | } |
| 422 | if (len > l) { |
| 423 | buf[l++] = dz; |
| 424 | } |
| 425 | break; |
| 426 | |
| 427 | default: |
| 428 | abort(); |
| 429 | } |
| 430 | |
| 431 | return l; |
| 432 | } |
| 433 | |
| 434 | int hid_keyboard_poll(HIDState *hs, uint8_t *buf, int len) |
| 435 | { |
| 436 | hs->idle_pending = false; |
| 437 | |
| 438 | if (len < 2) { |
| 439 | return 0; |
| 440 | } |
| 441 | |
| 442 | hid_keyboard_process_keycode(hs); |
| 443 | |
| 444 | buf[0] = hs->kbd.modifiers & 0xff; |
| 445 | buf[1] = 0; |
| 446 | if (hs->kbd.keys > 6) { |
| 447 | memset(buf + 2, HID_USAGE_ERROR_ROLLOVER, MIN(8, len) - 2); |
| 448 | } else { |
| 449 | memcpy(buf + 2, hs->kbd.key, MIN(8, len) - 2); |
| 450 | } |
| 451 | |
| 452 | return MIN(8, len); |
| 453 | } |
| 454 | |
| 455 | int hid_keyboard_write(HIDState *hs, uint8_t *buf, int len) |
| 456 | { |
| 457 | if (len > 0) { |
| 458 | int ledstate = 0; |
| 459 | /* 0x01: Num Lock LED |
| 460 | * 0x02: Caps Lock LED |
| 461 | * 0x04: Scroll Lock LED |
| 462 | * 0x08: Compose LED |
| 463 | * 0x10: Kana LED */ |
| 464 | hs->kbd.leds = buf[0]; |
| 465 | if (hs->kbd.leds & 0x04) { |
| 466 | ledstate |= QEMU_SCROLL_LOCK_LED; |
| 467 | } |
| 468 | if (hs->kbd.leds & 0x01) { |
| 469 | ledstate |= QEMU_NUM_LOCK_LED; |
| 470 | } |
| 471 | if (hs->kbd.leds & 0x02) { |
| 472 | ledstate |= QEMU_CAPS_LOCK_LED; |
| 473 | } |
| 474 | qemu_input_handler_set_leds_mask(hs->s, ledstate); |
| 475 | return 1; |
| 476 | } |
| 477 | return 0; |
| 478 | } |
| 479 | |
| 480 | void hid_reset(HIDState *hs) |
| 481 | { |
| 482 | switch (hs->kind) { |
| 483 | case HID_KEYBOARD: |
| 484 | memset(hs->kbd.keycodes, 0, sizeof(hs->kbd.keycodes)); |
| 485 | memset(hs->kbd.key, 0, sizeof(hs->kbd.key)); |
| 486 | hs->kbd.keys = 0; |
| 487 | hs->kbd.modifiers = 0; |
| 488 | break; |
| 489 | case HID_MOUSE: |
| 490 | case HID_TABLET: |
| 491 | memset(hs->ptr.queue, 0, sizeof(hs->ptr.queue)); |
| 492 | break; |
| 493 | } |
| 494 | hs->head = 0; |
| 495 | hs->n = 0; |
| 496 | hs->protocol = 1; |
| 497 | hs->idle = 0; |
| 498 | hs->idle_pending = false; |
| 499 | hid_del_idle_timer(hs); |
| 500 | } |
| 501 | |
| 502 | void hid_free(HIDState *hs) |
| 503 | { |
| 504 | qemu_input_handler_unregister(hs->s); |
| 505 | hid_del_idle_timer(hs); |
| 506 | } |
| 507 | |
| 508 | static const QemuInputHandler hid_keyboard_handler = { |
| 509 | .name = "QEMU HID Keyboard", |
| 510 | .mask = INPUT_EVENT_MASK_KEY, |
| 511 | .event = hid_keyboard_event, |
| 512 | }; |
| 513 | |
| 514 | static const QemuInputHandler hid_mouse_handler = { |
| 515 | .name = "QEMU HID Mouse", |
| 516 | .mask = INPUT_EVENT_MASK_BTN | INPUT_EVENT_MASK_REL, |
| 517 | .event = hid_pointer_event, |
| 518 | .sync = hid_pointer_sync, |
| 519 | }; |
| 520 | |
| 521 | static const QemuInputHandler hid_tablet_handler = { |
| 522 | .name = "QEMU HID Tablet", |
| 523 | .mask = INPUT_EVENT_MASK_BTN | INPUT_EVENT_MASK_ABS, |
| 524 | .event = hid_pointer_event, |
| 525 | .sync = hid_pointer_sync, |
| 526 | }; |
| 527 | |
| 528 | void hid_init(HIDState *hs, int kind, HIDEventFunc event) |
| 529 | { |
| 530 | hs->kind = kind; |
| 531 | hs->event = event; |
| 532 | |
| 533 | if (hs->kind == HID_KEYBOARD) { |
| 534 | hs->s = qemu_input_handler_register((DeviceState *)hs, |
| 535 | &hid_keyboard_handler); |
| 536 | qemu_input_handler_activate(hs->s); |
| 537 | } else if (hs->kind == HID_MOUSE) { |
| 538 | hs->s = qemu_input_handler_register((DeviceState *)hs, |
| 539 | &hid_mouse_handler); |
| 540 | } else if (hs->kind == HID_TABLET) { |
| 541 | hs->s = qemu_input_handler_register((DeviceState *)hs, |
| 542 | &hid_tablet_handler); |
| 543 | } |
| 544 | } |
| 545 | |
| 546 | static int hid_post_load(void *opaque, int version_id) |
| 547 | { |
| 548 | HIDState *s = opaque; |
| 549 | |
| 550 | hid_set_next_idle(s); |
| 551 | |
| 552 | if (s->n == QUEUE_LENGTH && (s->kind == HID_TABLET || |
| 553 | s->kind == HID_MOUSE)) { |
| 554 | /* |
| 555 | * Handle ptr device migration from old qemu with full queue. |
| 556 | * |
| 557 | * Throw away everything but the last event, so we propagate |
| 558 | * at least the current button state to the guest. Also keep |
| 559 | * current position for the tablet, signal "no motion" for the |
| 560 | * mouse. |
| 561 | */ |
| 562 | HIDPointerEvent evt; |
| 563 | evt = s->ptr.queue[(s->head+s->n) & QUEUE_MASK]; |
| 564 | if (s->kind == HID_MOUSE) { |
| 565 | evt.xdx = 0; |
| 566 | evt.ydy = 0; |
| 567 | } |
| 568 | s->ptr.queue[0] = evt; |
| 569 | s->head = 0; |
| 570 | s->n = 1; |
| 571 | } |
| 572 | return 0; |
| 573 | } |
| 574 | |
| 575 | static const VMStateDescription vmstate_hid_ptr_queue = { |
| 576 | .name = "HIDPointerEventQueue", |
| 577 | .version_id = 1, |
| 578 | .minimum_version_id = 1, |
| 579 | .fields = (const VMStateField[]) { |
| 580 | VMSTATE_INT32(xdx, HIDPointerEvent), |
| 581 | VMSTATE_INT32(ydy, HIDPointerEvent), |
| 582 | VMSTATE_INT32(dz, HIDPointerEvent), |
| 583 | VMSTATE_INT32(buttons_state, HIDPointerEvent), |
| 584 | VMSTATE_END_OF_LIST() |
| 585 | } |
| 586 | }; |
| 587 | |
| 588 | const VMStateDescription vmstate_hid_ptr_device = { |
| 589 | .name = "HIDPointerDevice", |
| 590 | .version_id = 1, |
| 591 | .minimum_version_id = 1, |
| 592 | .post_load = hid_post_load, |
| 593 | .fields = (const VMStateField[]) { |
| 594 | VMSTATE_STRUCT_ARRAY(ptr.queue, HIDState, QUEUE_LENGTH, 0, |
| 595 | vmstate_hid_ptr_queue, HIDPointerEvent), |
| 596 | VMSTATE_UINT32(head, HIDState), |
| 597 | VMSTATE_UINT32(n, HIDState), |
| 598 | VMSTATE_INT32(protocol, HIDState), |
| 599 | VMSTATE_UINT8(idle, HIDState), |
| 600 | VMSTATE_END_OF_LIST(), |
| 601 | } |
| 602 | }; |
| 603 | |
| 604 | const VMStateDescription vmstate_hid_keyboard_device = { |
| 605 | .name = "HIDKeyboardDevice", |
| 606 | .version_id = 1, |
| 607 | .minimum_version_id = 1, |
| 608 | .post_load = hid_post_load, |
| 609 | .fields = (const VMStateField[]) { |
| 610 | VMSTATE_UINT32_ARRAY(kbd.keycodes, HIDState, QUEUE_LENGTH), |
| 611 | VMSTATE_UINT32(head, HIDState), |
| 612 | VMSTATE_UINT32(n, HIDState), |
| 613 | VMSTATE_UINT16(kbd.modifiers, HIDState), |
| 614 | VMSTATE_UINT8(kbd.leds, HIDState), |
| 615 | VMSTATE_UINT8_ARRAY(kbd.key, HIDState, 16), |
| 616 | VMSTATE_INT32(kbd.keys, HIDState), |
| 617 | VMSTATE_INT32(protocol, HIDState), |
| 618 | VMSTATE_UINT8(idle, HIDState), |
| 619 | VMSTATE_END_OF_LIST(), |
| 620 | } |
| 621 | }; |