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dcfda673 GH |
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 | */ | |
83c9f4ca | 25 | #include "hw/hw.h" |
28ecbaee | 26 | #include "ui/console.h" |
1de7afc9 | 27 | #include "qemu/timer.h" |
0d09e41a | 28 | #include "hw/input/hid.h" |
dcfda673 GH |
29 | |
30 | #define HID_USAGE_ERROR_ROLLOVER 0x01 | |
31 | #define HID_USAGE_POSTFAIL 0x02 | |
32 | #define HID_USAGE_ERROR_UNDEFINED 0x03 | |
33 | ||
34 | /* Indices are QEMU keycodes, values are from HID Usage Table. Indices | |
35 | * above 0x80 are for keys that come after 0xe0 or 0xe1+0x1d or 0xe1+0x9d. */ | |
36 | static const uint8_t hid_usage_keys[0x100] = { | |
37 | 0x00, 0x29, 0x1e, 0x1f, 0x20, 0x21, 0x22, 0x23, | |
38 | 0x24, 0x25, 0x26, 0x27, 0x2d, 0x2e, 0x2a, 0x2b, | |
39 | 0x14, 0x1a, 0x08, 0x15, 0x17, 0x1c, 0x18, 0x0c, | |
40 | 0x12, 0x13, 0x2f, 0x30, 0x28, 0xe0, 0x04, 0x16, | |
41 | 0x07, 0x09, 0x0a, 0x0b, 0x0d, 0x0e, 0x0f, 0x33, | |
42 | 0x34, 0x35, 0xe1, 0x31, 0x1d, 0x1b, 0x06, 0x19, | |
43 | 0x05, 0x11, 0x10, 0x36, 0x37, 0x38, 0xe5, 0x55, | |
0ee4de58 | 44 | 0xe2, 0x2c, 0x39, 0x3a, 0x3b, 0x3c, 0x3d, 0x3e, |
dcfda673 GH |
45 | 0x3f, 0x40, 0x41, 0x42, 0x43, 0x53, 0x47, 0x5f, |
46 | 0x60, 0x61, 0x56, 0x5c, 0x5d, 0x5e, 0x57, 0x59, | |
47 | 0x5a, 0x5b, 0x62, 0x63, 0x00, 0x00, 0x00, 0x44, | |
48 | 0x45, 0x68, 0x69, 0x6a, 0x6b, 0x6c, 0x6d, 0x6e, | |
49 | 0xe8, 0xe9, 0x71, 0x72, 0x73, 0x00, 0x00, 0x00, | |
50 | 0x00, 0x00, 0x00, 0x85, 0x00, 0x00, 0x00, 0x00, | |
51 | 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, | |
52 | 0x00, 0x00, 0x00, 0x00, 0x00, 0xe3, 0xe7, 0x65, | |
53 | ||
54 | 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, | |
55 | 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, | |
56 | 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, | |
57 | 0x00, 0x00, 0x00, 0x00, 0x58, 0xe4, 0x00, 0x00, | |
58 | 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, | |
59 | 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, | |
60 | 0x00, 0x00, 0x00, 0x00, 0x00, 0x54, 0x00, 0x46, | |
61 | 0xe6, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, | |
62 | 0x00, 0x00, 0x00, 0x00, 0x00, 0x48, 0x00, 0x4a, | |
63 | 0x52, 0x4b, 0x00, 0x50, 0x00, 0x4f, 0x00, 0x4d, | |
64 | 0x51, 0x4e, 0x49, 0x4c, 0x00, 0x00, 0x00, 0x00, | |
65 | 0x00, 0x00, 0x00, 0xe3, 0xe7, 0x65, 0x00, 0x00, | |
66 | 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, | |
67 | 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, | |
68 | 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, | |
69 | 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, | |
70 | }; | |
71 | ||
72 | bool hid_has_events(HIDState *hs) | |
73 | { | |
027c03f7 | 74 | return hs->n > 0 || hs->idle_pending; |
dcfda673 GH |
75 | } |
76 | ||
027c03f7 | 77 | static void hid_idle_timer(void *opaque) |
b069d348 | 78 | { |
027c03f7 HG |
79 | HIDState *hs = opaque; |
80 | ||
81 | hs->idle_pending = true; | |
82 | hs->event(hs); | |
83 | } | |
84 | ||
85 | static void hid_del_idle_timer(HIDState *hs) | |
86 | { | |
87 | if (hs->idle_timer) { | |
bc72ad67 AB |
88 | timer_del(hs->idle_timer); |
89 | timer_free(hs->idle_timer); | |
027c03f7 HG |
90 | hs->idle_timer = NULL; |
91 | } | |
92 | } | |
93 | ||
94 | void hid_set_next_idle(HIDState *hs) | |
95 | { | |
96 | if (hs->idle) { | |
bc72ad67 | 97 | uint64_t expire_time = qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL) + |
027c03f7 HG |
98 | get_ticks_per_sec() * hs->idle * 4 / 1000; |
99 | if (!hs->idle_timer) { | |
bc72ad67 | 100 | hs->idle_timer = timer_new_ns(QEMU_CLOCK_VIRTUAL, hid_idle_timer, hs); |
027c03f7 | 101 | } |
bc72ad67 | 102 | timer_mod_ns(hs->idle_timer, expire_time); |
027c03f7 HG |
103 | } else { |
104 | hid_del_idle_timer(hs); | |
105 | } | |
b069d348 GH |
106 | } |
107 | ||
8b84286f GH |
108 | static void hid_pointer_event(DeviceState *dev, QemuConsole *src, |
109 | InputEvent *evt) | |
dcfda673 | 110 | { |
8b84286f GH |
111 | static const int bmap[INPUT_BUTTON_MAX] = { |
112 | [INPUT_BUTTON_LEFT] = 0x01, | |
113 | [INPUT_BUTTON_RIGHT] = 0x02, | |
114 | [INPUT_BUTTON_MIDDLE] = 0x04, | |
115 | }; | |
116 | HIDState *hs = (HIDState *)dev; | |
117 | HIDPointerEvent *e; | |
dcfda673 | 118 | |
8b84286f GH |
119 | assert(hs->n < QUEUE_LENGTH); |
120 | e = &hs->ptr.queue[(hs->head + hs->n) & QUEUE_MASK]; | |
121 | ||
122 | switch (evt->kind) { | |
123 | case INPUT_EVENT_KIND_REL: | |
124 | if (evt->rel->axis == INPUT_AXIS_X) { | |
125 | e->xdx += evt->rel->value; | |
126 | } else if (evt->rel->axis == INPUT_AXIS_Y) { | |
35e83d10 | 127 | e->ydy += evt->rel->value; |
8b84286f GH |
128 | } |
129 | break; | |
130 | ||
131 | case INPUT_EVENT_KIND_ABS: | |
132 | if (evt->rel->axis == INPUT_AXIS_X) { | |
133 | e->xdx = evt->rel->value; | |
134 | } else if (evt->rel->axis == INPUT_AXIS_Y) { | |
135 | e->ydy = evt->rel->value; | |
136 | } | |
137 | break; | |
138 | ||
139 | case INPUT_EVENT_KIND_BTN: | |
140 | if (evt->btn->down) { | |
141 | e->buttons_state |= bmap[evt->btn->button]; | |
142 | if (evt->btn->button == INPUT_BUTTON_WHEEL_UP) { | |
143 | e->dz--; | |
144 | } else if (evt->btn->button == INPUT_BUTTON_WHEEL_DOWN) { | |
145 | e->dz++; | |
146 | } | |
147 | } else { | |
148 | e->buttons_state &= ~bmap[evt->btn->button]; | |
dcfda673 | 149 | } |
8b84286f GH |
150 | break; |
151 | ||
152 | default: | |
153 | /* keep gcc happy */ | |
154 | break; | |
dcfda673 | 155 | } |
8b84286f | 156 | |
dcfda673 GH |
157 | } |
158 | ||
8b84286f | 159 | static void hid_pointer_sync(DeviceState *dev) |
dcfda673 | 160 | { |
8b84286f GH |
161 | HIDState *hs = (HIDState *)dev; |
162 | HIDPointerEvent *prev, *curr, *next; | |
163 | bool event_compression = false; | |
164 | ||
165 | if (hs->n == QUEUE_LENGTH-1) { | |
166 | /* | |
5d831be2 | 167 | * Queue full. We are losing information, but we at least |
8b84286f GH |
168 | * keep track of most recent button state. |
169 | */ | |
170 | return; | |
171 | } | |
172 | ||
173 | prev = &hs->ptr.queue[(hs->head + hs->n - 1) & QUEUE_MASK]; | |
174 | curr = &hs->ptr.queue[(hs->head + hs->n) & QUEUE_MASK]; | |
175 | next = &hs->ptr.queue[(hs->head + hs->n + 1) & QUEUE_MASK]; | |
176 | ||
177 | if (hs->n > 0) { | |
178 | /* | |
179 | * No button state change between previous and current event | |
180 | * (and previous wasn't seen by the guest yet), so there is | |
181 | * motion information only and we can combine the two event | |
182 | * into one. | |
183 | */ | |
184 | if (curr->buttons_state == prev->buttons_state) { | |
185 | event_compression = true; | |
186 | } | |
187 | } | |
188 | ||
189 | if (event_compression) { | |
190 | /* add current motion to previous, clear current */ | |
191 | if (hs->kind == HID_MOUSE) { | |
192 | prev->xdx += curr->xdx; | |
193 | curr->xdx = 0; | |
35e83d10 | 194 | prev->ydy += curr->ydy; |
8b84286f GH |
195 | curr->ydy = 0; |
196 | } else { | |
197 | prev->xdx = curr->xdx; | |
198 | prev->ydy = curr->ydy; | |
199 | } | |
200 | prev->dz += curr->dz; | |
201 | curr->dz = 0; | |
202 | } else { | |
203 | /* prepate next (clear rel, copy abs + btns) */ | |
204 | if (hs->kind == HID_MOUSE) { | |
205 | next->xdx = 0; | |
206 | next->ydy = 0; | |
207 | } else { | |
208 | next->xdx = curr->xdx; | |
209 | next->ydy = curr->ydy; | |
210 | } | |
211 | next->dz = 0; | |
212 | next->buttons_state = curr->buttons_state; | |
213 | /* make current guest visible, notify guest */ | |
dcfda673 | 214 | hs->n++; |
8b84286f | 215 | hs->event(hs); |
dcfda673 | 216 | } |
dcfda673 GH |
217 | } |
218 | ||
1ff5eedd GH |
219 | static void hid_keyboard_event(DeviceState *dev, QemuConsole *src, |
220 | InputEvent *evt) | |
dcfda673 | 221 | { |
1ff5eedd GH |
222 | HIDState *hs = (HIDState *)dev; |
223 | int scancodes[3], i, count; | |
dcfda673 GH |
224 | int slot; |
225 | ||
1ff5eedd GH |
226 | count = qemu_input_key_value_to_scancode(evt->key->key, |
227 | evt->key->down, | |
228 | scancodes); | |
229 | if (hs->n + count > QUEUE_LENGTH) { | |
dcfda673 GH |
230 | fprintf(stderr, "usb-kbd: warning: key event queue full\n"); |
231 | return; | |
232 | } | |
1ff5eedd GH |
233 | for (i = 0; i < count; i++) { |
234 | slot = (hs->head + hs->n) & QUEUE_MASK; hs->n++; | |
235 | hs->kbd.keycodes[slot] = scancodes[i]; | |
236 | } | |
dcfda673 GH |
237 | hs->event(hs); |
238 | } | |
239 | ||
240 | static void hid_keyboard_process_keycode(HIDState *hs) | |
241 | { | |
242 | uint8_t hid_code, key; | |
243 | int i, keycode, slot; | |
244 | ||
245 | if (hs->n == 0) { | |
246 | return; | |
247 | } | |
248 | slot = hs->head & QUEUE_MASK; QUEUE_INCR(hs->head); hs->n--; | |
249 | keycode = hs->kbd.keycodes[slot]; | |
250 | ||
251 | key = keycode & 0x7f; | |
252 | hid_code = hid_usage_keys[key | ((hs->kbd.modifiers >> 1) & (1 << 7))]; | |
253 | hs->kbd.modifiers &= ~(1 << 8); | |
254 | ||
255 | switch (hid_code) { | |
256 | case 0x00: | |
257 | return; | |
258 | ||
259 | case 0xe0: | |
260 | if (hs->kbd.modifiers & (1 << 9)) { | |
261 | hs->kbd.modifiers ^= 3 << 8; | |
262 | return; | |
263 | } | |
264 | case 0xe1 ... 0xe7: | |
265 | if (keycode & (1 << 7)) { | |
266 | hs->kbd.modifiers &= ~(1 << (hid_code & 0x0f)); | |
267 | return; | |
268 | } | |
269 | case 0xe8 ... 0xef: | |
270 | hs->kbd.modifiers |= 1 << (hid_code & 0x0f); | |
271 | return; | |
272 | } | |
273 | ||
274 | if (keycode & (1 << 7)) { | |
275 | for (i = hs->kbd.keys - 1; i >= 0; i--) { | |
276 | if (hs->kbd.key[i] == hid_code) { | |
277 | hs->kbd.key[i] = hs->kbd.key[-- hs->kbd.keys]; | |
278 | hs->kbd.key[hs->kbd.keys] = 0x00; | |
279 | break; | |
280 | } | |
281 | } | |
282 | if (i < 0) { | |
283 | return; | |
284 | } | |
285 | } else { | |
286 | for (i = hs->kbd.keys - 1; i >= 0; i--) { | |
287 | if (hs->kbd.key[i] == hid_code) { | |
288 | break; | |
289 | } | |
290 | } | |
291 | if (i < 0) { | |
292 | if (hs->kbd.keys < sizeof(hs->kbd.key)) { | |
293 | hs->kbd.key[hs->kbd.keys++] = hid_code; | |
294 | } | |
295 | } else { | |
296 | return; | |
297 | } | |
298 | } | |
299 | } | |
300 | ||
301 | static inline int int_clamp(int val, int vmin, int vmax) | |
302 | { | |
303 | if (val < vmin) { | |
304 | return vmin; | |
305 | } else if (val > vmax) { | |
306 | return vmax; | |
307 | } else { | |
308 | return val; | |
309 | } | |
310 | } | |
311 | ||
21635e12 GH |
312 | void hid_pointer_activate(HIDState *hs) |
313 | { | |
314 | if (!hs->ptr.mouse_grabbed) { | |
8b84286f | 315 | qemu_input_handler_activate(hs->s); |
21635e12 GH |
316 | hs->ptr.mouse_grabbed = 1; |
317 | } | |
318 | } | |
319 | ||
dcfda673 GH |
320 | int hid_pointer_poll(HIDState *hs, uint8_t *buf, int len) |
321 | { | |
8b84286f | 322 | int dx, dy, dz, l; |
dcfda673 GH |
323 | int index; |
324 | HIDPointerEvent *e; | |
325 | ||
027c03f7 HG |
326 | hs->idle_pending = false; |
327 | ||
21635e12 | 328 | hid_pointer_activate(hs); |
dcfda673 GH |
329 | |
330 | /* When the buffer is empty, return the last event. Relative | |
331 | movements will all be zero. */ | |
332 | index = (hs->n ? hs->head : hs->head - 1); | |
333 | e = &hs->ptr.queue[index & QUEUE_MASK]; | |
334 | ||
335 | if (hs->kind == HID_MOUSE) { | |
336 | dx = int_clamp(e->xdx, -127, 127); | |
337 | dy = int_clamp(e->ydy, -127, 127); | |
338 | e->xdx -= dx; | |
339 | e->ydy -= dy; | |
340 | } else { | |
341 | dx = e->xdx; | |
342 | dy = e->ydy; | |
343 | } | |
344 | dz = int_clamp(e->dz, -127, 127); | |
345 | e->dz -= dz; | |
346 | ||
dcfda673 GH |
347 | if (hs->n && |
348 | !e->dz && | |
349 | (hs->kind == HID_TABLET || (!e->xdx && !e->ydy))) { | |
350 | /* that deals with this event */ | |
351 | QUEUE_INCR(hs->head); | |
352 | hs->n--; | |
353 | } | |
354 | ||
355 | /* Appears we have to invert the wheel direction */ | |
356 | dz = 0 - dz; | |
357 | l = 0; | |
358 | switch (hs->kind) { | |
359 | case HID_MOUSE: | |
360 | if (len > l) { | |
8b84286f | 361 | buf[l++] = e->buttons_state; |
dcfda673 GH |
362 | } |
363 | if (len > l) { | |
364 | buf[l++] = dx; | |
365 | } | |
366 | if (len > l) { | |
367 | buf[l++] = dy; | |
368 | } | |
369 | if (len > l) { | |
370 | buf[l++] = dz; | |
371 | } | |
372 | break; | |
373 | ||
374 | case HID_TABLET: | |
375 | if (len > l) { | |
8b84286f | 376 | buf[l++] = e->buttons_state; |
dcfda673 GH |
377 | } |
378 | if (len > l) { | |
379 | buf[l++] = dx & 0xff; | |
380 | } | |
381 | if (len > l) { | |
382 | buf[l++] = dx >> 8; | |
383 | } | |
384 | if (len > l) { | |
385 | buf[l++] = dy & 0xff; | |
386 | } | |
387 | if (len > l) { | |
388 | buf[l++] = dy >> 8; | |
389 | } | |
390 | if (len > l) { | |
391 | buf[l++] = dz; | |
392 | } | |
393 | break; | |
394 | ||
395 | default: | |
396 | abort(); | |
397 | } | |
398 | ||
399 | return l; | |
400 | } | |
401 | ||
402 | int hid_keyboard_poll(HIDState *hs, uint8_t *buf, int len) | |
403 | { | |
027c03f7 HG |
404 | hs->idle_pending = false; |
405 | ||
dcfda673 GH |
406 | if (len < 2) { |
407 | return 0; | |
408 | } | |
409 | ||
410 | hid_keyboard_process_keycode(hs); | |
411 | ||
412 | buf[0] = hs->kbd.modifiers & 0xff; | |
413 | buf[1] = 0; | |
414 | if (hs->kbd.keys > 6) { | |
415 | memset(buf + 2, HID_USAGE_ERROR_ROLLOVER, MIN(8, len) - 2); | |
416 | } else { | |
417 | memcpy(buf + 2, hs->kbd.key, MIN(8, len) - 2); | |
418 | } | |
419 | ||
420 | return MIN(8, len); | |
421 | } | |
422 | ||
423 | int hid_keyboard_write(HIDState *hs, uint8_t *buf, int len) | |
424 | { | |
425 | if (len > 0) { | |
426 | int ledstate = 0; | |
427 | /* 0x01: Num Lock LED | |
428 | * 0x02: Caps Lock LED | |
429 | * 0x04: Scroll Lock LED | |
430 | * 0x08: Compose LED | |
431 | * 0x10: Kana LED */ | |
432 | hs->kbd.leds = buf[0]; | |
433 | if (hs->kbd.leds & 0x04) { | |
434 | ledstate |= QEMU_SCROLL_LOCK_LED; | |
435 | } | |
436 | if (hs->kbd.leds & 0x01) { | |
437 | ledstate |= QEMU_NUM_LOCK_LED; | |
438 | } | |
439 | if (hs->kbd.leds & 0x02) { | |
440 | ledstate |= QEMU_CAPS_LOCK_LED; | |
441 | } | |
442 | kbd_put_ledstate(ledstate); | |
443 | } | |
444 | return 0; | |
445 | } | |
446 | ||
447 | void hid_reset(HIDState *hs) | |
448 | { | |
449 | switch (hs->kind) { | |
450 | case HID_KEYBOARD: | |
dcfda673 GH |
451 | memset(hs->kbd.keycodes, 0, sizeof(hs->kbd.keycodes)); |
452 | memset(hs->kbd.key, 0, sizeof(hs->kbd.key)); | |
453 | hs->kbd.keys = 0; | |
454 | break; | |
455 | case HID_MOUSE: | |
456 | case HID_TABLET: | |
457 | memset(hs->ptr.queue, 0, sizeof(hs->ptr.queue)); | |
458 | break; | |
459 | } | |
460 | hs->head = 0; | |
461 | hs->n = 0; | |
b069d348 GH |
462 | hs->protocol = 1; |
463 | hs->idle = 0; | |
027c03f7 HG |
464 | hs->idle_pending = false; |
465 | hid_del_idle_timer(hs); | |
dcfda673 GH |
466 | } |
467 | ||
468 | void hid_free(HIDState *hs) | |
469 | { | |
8b84286f | 470 | qemu_input_handler_unregister(hs->s); |
027c03f7 | 471 | hid_del_idle_timer(hs); |
dcfda673 GH |
472 | } |
473 | ||
1ff5eedd GH |
474 | static QemuInputHandler hid_keyboard_handler = { |
475 | .name = "QEMU HID Keyboard", | |
476 | .mask = INPUT_EVENT_MASK_KEY, | |
477 | .event = hid_keyboard_event, | |
478 | }; | |
479 | ||
8b84286f GH |
480 | static QemuInputHandler hid_mouse_handler = { |
481 | .name = "QEMU HID Mouse", | |
482 | .mask = INPUT_EVENT_MASK_BTN | INPUT_EVENT_MASK_REL, | |
483 | .event = hid_pointer_event, | |
484 | .sync = hid_pointer_sync, | |
485 | }; | |
486 | ||
487 | static QemuInputHandler hid_tablet_handler = { | |
488 | .name = "QEMU HID Tablet", | |
489 | .mask = INPUT_EVENT_MASK_BTN | INPUT_EVENT_MASK_ABS, | |
490 | .event = hid_pointer_event, | |
491 | .sync = hid_pointer_sync, | |
492 | }; | |
493 | ||
dcfda673 GH |
494 | void hid_init(HIDState *hs, int kind, HIDEventFunc event) |
495 | { | |
496 | hs->kind = kind; | |
497 | hs->event = event; | |
498 | ||
bb0db527 | 499 | if (hs->kind == HID_KEYBOARD) { |
1ff5eedd GH |
500 | hs->s = qemu_input_handler_register((DeviceState *)hs, |
501 | &hid_keyboard_handler); | |
502 | qemu_input_handler_activate(hs->s); | |
bb0db527 | 503 | } else if (hs->kind == HID_MOUSE) { |
8b84286f GH |
504 | hs->s = qemu_input_handler_register((DeviceState *)hs, |
505 | &hid_mouse_handler); | |
dcfda673 | 506 | } else if (hs->kind == HID_TABLET) { |
8b84286f GH |
507 | hs->s = qemu_input_handler_register((DeviceState *)hs, |
508 | &hid_tablet_handler); | |
dcfda673 GH |
509 | } |
510 | } | |
ccd4ed06 MW |
511 | |
512 | static int hid_post_load(void *opaque, int version_id) | |
513 | { | |
514 | HIDState *s = opaque; | |
515 | ||
027c03f7 | 516 | hid_set_next_idle(s); |
ba4d2606 GH |
517 | |
518 | if (s->n == QUEUE_LENGTH && (s->kind == HID_TABLET || | |
519 | s->kind == HID_MOUSE)) { | |
520 | /* | |
521 | * Handle ptr device migration from old qemu with full queue. | |
522 | * | |
523 | * Throw away everything but the last event, so we propagate | |
524 | * at least the current button state to the guest. Also keep | |
525 | * current position for the tablet, signal "no motion" for the | |
526 | * mouse. | |
527 | */ | |
528 | HIDPointerEvent evt; | |
529 | evt = s->ptr.queue[(s->head+s->n) & QUEUE_MASK]; | |
530 | if (s->kind == HID_MOUSE) { | |
531 | evt.xdx = 0; | |
532 | evt.ydy = 0; | |
533 | } | |
534 | s->ptr.queue[0] = evt; | |
535 | s->head = 0; | |
536 | s->n = 1; | |
537 | } | |
ccd4ed06 MW |
538 | return 0; |
539 | } | |
540 | ||
541 | static const VMStateDescription vmstate_hid_ptr_queue = { | |
542 | .name = "HIDPointerEventQueue", | |
543 | .version_id = 1, | |
544 | .minimum_version_id = 1, | |
545 | .fields = (VMStateField[]) { | |
546 | VMSTATE_INT32(xdx, HIDPointerEvent), | |
547 | VMSTATE_INT32(ydy, HIDPointerEvent), | |
548 | VMSTATE_INT32(dz, HIDPointerEvent), | |
549 | VMSTATE_INT32(buttons_state, HIDPointerEvent), | |
550 | VMSTATE_END_OF_LIST() | |
551 | } | |
552 | }; | |
553 | ||
554 | const VMStateDescription vmstate_hid_ptr_device = { | |
555 | .name = "HIDPointerDevice", | |
556 | .version_id = 1, | |
557 | .minimum_version_id = 1, | |
558 | .post_load = hid_post_load, | |
559 | .fields = (VMStateField[]) { | |
560 | VMSTATE_STRUCT_ARRAY(ptr.queue, HIDState, QUEUE_LENGTH, 0, | |
561 | vmstate_hid_ptr_queue, HIDPointerEvent), | |
562 | VMSTATE_UINT32(head, HIDState), | |
563 | VMSTATE_UINT32(n, HIDState), | |
564 | VMSTATE_INT32(protocol, HIDState), | |
565 | VMSTATE_UINT8(idle, HIDState), | |
566 | VMSTATE_END_OF_LIST(), | |
567 | } | |
568 | }; | |
569 | ||
570 | const VMStateDescription vmstate_hid_keyboard_device = { | |
571 | .name = "HIDKeyboardDevice", | |
572 | .version_id = 1, | |
573 | .minimum_version_id = 1, | |
574 | .post_load = hid_post_load, | |
575 | .fields = (VMStateField[]) { | |
576 | VMSTATE_UINT32_ARRAY(kbd.keycodes, HIDState, QUEUE_LENGTH), | |
577 | VMSTATE_UINT32(head, HIDState), | |
578 | VMSTATE_UINT32(n, HIDState), | |
579 | VMSTATE_UINT16(kbd.modifiers, HIDState), | |
580 | VMSTATE_UINT8(kbd.leds, HIDState), | |
581 | VMSTATE_UINT8_ARRAY(kbd.key, HIDState, 16), | |
582 | VMSTATE_INT32(kbd.keys, HIDState), | |
583 | VMSTATE_INT32(protocol, HIDState), | |
584 | VMSTATE_UINT8(idle, HIDState), | |
585 | VMSTATE_END_OF_LIST(), | |
586 | } | |
587 | }; |