2 * QEMU PS/2 keyboard/mouse emulation
4 * Copyright (c) 2003 Fabrice Bellard
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:
13 * The above copyright notice and this permission notice shall be included in
14 * all copies or substantial portions of the Software.
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
25 #include "hw/input/ps2.h"
26 #include "ui/console.h"
28 #include "sysemu/sysemu.h"
32 /* debug PC keyboard */
35 /* debug PC keyboard : only mouse */
38 /* Keyboard Commands */
39 #define KBD_CMD_SET_LEDS 0xED /* Set keyboard leds */
40 #define KBD_CMD_ECHO 0xEE
41 #define KBD_CMD_SCANCODE 0xF0 /* Get/set scancode set */
42 #define KBD_CMD_GET_ID 0xF2 /* get keyboard ID */
43 #define KBD_CMD_SET_RATE 0xF3 /* Set typematic rate */
44 #define KBD_CMD_ENABLE 0xF4 /* Enable scanning */
45 #define KBD_CMD_RESET_DISABLE 0xF5 /* reset and disable scanning */
46 #define KBD_CMD_RESET_ENABLE 0xF6 /* reset and enable scanning */
47 #define KBD_CMD_RESET 0xFF /* Reset */
49 /* Keyboard Replies */
50 #define KBD_REPLY_POR 0xAA /* Power on reset */
51 #define KBD_REPLY_ID 0xAB /* Keyboard ID */
52 #define KBD_REPLY_ACK 0xFA /* Command ACK */
53 #define KBD_REPLY_RESEND 0xFE /* Command NACK, send the cmd again */
56 #define AUX_SET_SCALE11 0xE6 /* Set 1:1 scaling */
57 #define AUX_SET_SCALE21 0xE7 /* Set 2:1 scaling */
58 #define AUX_SET_RES 0xE8 /* Set resolution */
59 #define AUX_GET_SCALE 0xE9 /* Get scaling factor */
60 #define AUX_SET_STREAM 0xEA /* Set stream mode */
61 #define AUX_POLL 0xEB /* Poll */
62 #define AUX_RESET_WRAP 0xEC /* Reset wrap mode */
63 #define AUX_SET_WRAP 0xEE /* Set wrap mode */
64 #define AUX_SET_REMOTE 0xF0 /* Set remote mode */
65 #define AUX_GET_TYPE 0xF2 /* Get type */
66 #define AUX_SET_SAMPLE 0xF3 /* Set sample rate */
67 #define AUX_ENABLE_DEV 0xF4 /* Enable aux device */
68 #define AUX_DISABLE_DEV 0xF5 /* Disable aux device */
69 #define AUX_SET_DEFAULT 0xF6
70 #define AUX_RESET 0xFF /* Reset aux device */
71 #define AUX_ACK 0xFA /* Command byte ACK. */
73 #define MOUSE_STATUS_REMOTE 0x40
74 #define MOUSE_STATUS_ENABLED 0x20
75 #define MOUSE_STATUS_SCALE21 0x10
77 #define PS2_QUEUE_SIZE 16 /* Buffer size required by PS/2 protocol */
80 /* Keep the data array 256 bytes long, which compatibility
81 with older qemu versions. */
83 int rptr, wptr, count;
89 void (*update_irq)(void *, int);
96 /* QEMU uses translated PC scancodes internally. To avoid multiple
97 conversions we do the translation (if any) in the PS/2 emulation
98 not the keyboard controller. */
100 int scancode_set; /* 1=XT, 2=AT, 3=PS/2 */
106 uint8_t mouse_status;
107 uint8_t mouse_resolution;
108 uint8_t mouse_sample_rate;
110 uint8_t mouse_type; /* 0 = PS2, 3 = IMPS/2, 4 = IMEX */
111 uint8_t mouse_detect_state;
112 int mouse_dx; /* current values, needed for 'poll' mode */
115 uint8_t mouse_buttons;
118 /* Table to convert from PC scancodes to raw scancodes. */
119 static const unsigned char ps2_raw_keycode[128] = {
120 0, 118, 22, 30, 38, 37, 46, 54, 61, 62, 70, 69, 78, 85, 102, 13,
121 21, 29, 36, 45, 44, 53, 60, 67, 68, 77, 84, 91, 90, 20, 28, 27,
122 35, 43, 52, 51, 59, 66, 75, 76, 82, 14, 18, 93, 26, 34, 33, 42,
123 50, 49, 58, 65, 73, 74, 89, 124, 17, 41, 88, 5, 6, 4, 12, 3,
124 11, 2, 10, 1, 9, 119, 126, 108, 117, 125, 123, 107, 115, 116, 121, 105,
125 114, 122, 112, 113, 127, 96, 97, 120, 7, 15, 23, 31, 39, 47, 55, 63,
126 71, 79, 86, 94, 8, 16, 24, 32, 40, 48, 56, 64, 72, 80, 87, 111,
127 19, 25, 57, 81, 83, 92, 95, 98, 99, 100, 101, 103, 104, 106, 109, 110
129 static const unsigned char ps2_raw_keycode_set3[128] = {
130 0, 8, 22, 30, 38, 37, 46, 54, 61, 62, 70, 69, 78, 85, 102, 13,
131 21, 29, 36, 45, 44, 53, 60, 67, 68, 77, 84, 91, 90, 17, 28, 27,
132 35, 43, 52, 51, 59, 66, 75, 76, 82, 14, 18, 92, 26, 34, 33, 42,
133 50, 49, 58, 65, 73, 74, 89, 126, 25, 41, 20, 7, 15, 23, 31, 39,
134 47, 2, 63, 71, 79, 118, 95, 108, 117, 125, 132, 107, 115, 116, 124, 105,
135 114, 122, 112, 113, 127, 96, 97, 86, 94, 15, 23, 31, 39, 47, 55, 63,
136 71, 79, 86, 94, 8, 16, 24, 32, 40, 48, 56, 64, 72, 80, 87, 111,
137 19, 25, 57, 81, 83, 92, 95, 98, 99, 100, 101, 103, 104, 106, 109, 110
140 void ps2_queue(void *opaque, int b)
142 PS2State *s = (PS2State *)opaque;
143 PS2Queue *q = &s->queue;
145 if (q->count >= PS2_QUEUE_SIZE - 1)
147 q->data[q->wptr] = b;
148 if (++q->wptr == PS2_QUEUE_SIZE)
151 s->update_irq(s->update_arg, 1);
155 keycode is expressed as follow:
156 bit 7 - 0 key pressed, 1 = key released
157 bits 6-0 - translated scancode set 2
159 static void ps2_put_keycode(void *opaque, int keycode)
161 PS2KbdState *s = opaque;
163 trace_ps2_put_keycode(opaque, keycode);
164 qemu_system_wakeup_request(QEMU_WAKEUP_REASON_OTHER);
165 /* XXX: add support for scancode set 1 */
166 if (!s->translate && keycode < 0xe0 && s->scancode_set > 1) {
167 if (keycode & 0x80) {
168 ps2_queue(&s->common, 0xf0);
170 if (s->scancode_set == 2) {
171 keycode = ps2_raw_keycode[keycode & 0x7f];
172 } else if (s->scancode_set == 3) {
173 keycode = ps2_raw_keycode_set3[keycode & 0x7f];
176 ps2_queue(&s->common, keycode);
179 static void ps2_keyboard_event(DeviceState *dev, QemuConsole *src,
182 PS2KbdState *s = (PS2KbdState *)dev;
183 int scancodes[3], i, count;
185 qemu_system_wakeup_request(QEMU_WAKEUP_REASON_OTHER);
186 count = qemu_input_key_value_to_scancode(evt->key->key,
189 for (i = 0; i < count; i++) {
190 ps2_put_keycode(s, scancodes[i]);
194 uint32_t ps2_read_data(void *opaque)
196 PS2State *s = (PS2State *)opaque;
200 trace_ps2_read_data(opaque);
203 /* NOTE: if no data left, we return the last keyboard one
204 (needed for EMM386) */
205 /* XXX: need a timer to do things correctly */
208 index = PS2_QUEUE_SIZE - 1;
209 val = q->data[index];
211 val = q->data[q->rptr];
212 if (++q->rptr == PS2_QUEUE_SIZE)
215 /* reading deasserts IRQ */
216 s->update_irq(s->update_arg, 0);
217 /* reassert IRQs if data left */
218 s->update_irq(s->update_arg, q->count != 0);
223 static void ps2_set_ledstate(PS2KbdState *s, int ledstate)
225 trace_ps2_set_ledstate(s, ledstate);
226 s->ledstate = ledstate;
227 kbd_put_ledstate(ledstate);
230 static void ps2_reset_keyboard(PS2KbdState *s)
232 trace_ps2_reset_keyboard(s);
235 ps2_set_ledstate(s, 0);
238 void ps2_write_keyboard(void *opaque, int val)
240 PS2KbdState *s = (PS2KbdState *)opaque;
242 trace_ps2_write_keyboard(opaque, val);
243 switch(s->common.write_cmd) {
248 ps2_queue(&s->common, KBD_REPLY_ACK);
251 ps2_queue(&s->common, KBD_REPLY_RESEND);
254 ps2_queue(&s->common, KBD_REPLY_ACK);
255 /* We emulate a MF2 AT keyboard here */
256 ps2_queue(&s->common, KBD_REPLY_ID);
258 ps2_queue(&s->common, 0x41);
260 ps2_queue(&s->common, 0x83);
263 ps2_queue(&s->common, KBD_CMD_ECHO);
267 ps2_queue(&s->common, KBD_REPLY_ACK);
269 case KBD_CMD_SCANCODE:
270 case KBD_CMD_SET_LEDS:
271 case KBD_CMD_SET_RATE:
272 s->common.write_cmd = val;
273 ps2_queue(&s->common, KBD_REPLY_ACK);
275 case KBD_CMD_RESET_DISABLE:
276 ps2_reset_keyboard(s);
278 ps2_queue(&s->common, KBD_REPLY_ACK);
280 case KBD_CMD_RESET_ENABLE:
281 ps2_reset_keyboard(s);
283 ps2_queue(&s->common, KBD_REPLY_ACK);
286 ps2_reset_keyboard(s);
287 ps2_queue(&s->common, KBD_REPLY_ACK);
288 ps2_queue(&s->common, KBD_REPLY_POR);
291 ps2_queue(&s->common, KBD_REPLY_ACK);
295 case KBD_CMD_SCANCODE:
297 if (s->scancode_set == 1)
298 ps2_put_keycode(s, 0x43);
299 else if (s->scancode_set == 2)
300 ps2_put_keycode(s, 0x41);
301 else if (s->scancode_set == 3)
302 ps2_put_keycode(s, 0x3f);
304 if (val >= 1 && val <= 3)
305 s->scancode_set = val;
306 ps2_queue(&s->common, KBD_REPLY_ACK);
308 s->common.write_cmd = -1;
310 case KBD_CMD_SET_LEDS:
311 ps2_set_ledstate(s, val);
312 ps2_queue(&s->common, KBD_REPLY_ACK);
313 s->common.write_cmd = -1;
315 case KBD_CMD_SET_RATE:
316 ps2_queue(&s->common, KBD_REPLY_ACK);
317 s->common.write_cmd = -1;
322 /* Set the scancode translation mode.
324 1 = translated scancodes (used by qemu internally). */
326 void ps2_keyboard_set_translation(void *opaque, int mode)
328 PS2KbdState *s = (PS2KbdState *)opaque;
329 trace_ps2_keyboard_set_translation(opaque, mode);
333 static void ps2_mouse_send_packet(PS2MouseState *s)
341 /* XXX: increase range to 8 bits ? */
350 b = 0x08 | ((dx1 < 0) << 4) | ((dy1 < 0) << 5) | (s->mouse_buttons & 0x07);
351 ps2_queue(&s->common, b);
352 ps2_queue(&s->common, dx1 & 0xff);
353 ps2_queue(&s->common, dy1 & 0xff);
354 /* extra byte for IMPS/2 or IMEX */
355 switch(s->mouse_type) {
363 ps2_queue(&s->common, dz1 & 0xff);
370 b = (dz1 & 0x0f) | ((s->mouse_buttons & 0x18) << 1);
371 ps2_queue(&s->common, b);
375 trace_ps2_mouse_send_packet(s, dx1, dy1, dz1, b);
382 static void ps2_mouse_event(DeviceState *dev, QemuConsole *src,
385 static const int bmap[INPUT_BUTTON_MAX] = {
386 [INPUT_BUTTON_LEFT] = MOUSE_EVENT_LBUTTON,
387 [INPUT_BUTTON_MIDDLE] = MOUSE_EVENT_MBUTTON,
388 [INPUT_BUTTON_RIGHT] = MOUSE_EVENT_RBUTTON,
390 PS2MouseState *s = (PS2MouseState *)dev;
392 /* check if deltas are recorded when disabled */
393 if (!(s->mouse_status & MOUSE_STATUS_ENABLED))
397 case INPUT_EVENT_KIND_REL:
398 if (evt->rel->axis == INPUT_AXIS_X) {
399 s->mouse_dx += evt->rel->value;
400 } else if (evt->rel->axis == INPUT_AXIS_Y) {
401 s->mouse_dy -= evt->rel->value;
405 case INPUT_EVENT_KIND_BTN:
406 if (evt->btn->down) {
407 s->mouse_buttons |= bmap[evt->btn->button];
408 if (evt->btn->button == INPUT_BUTTON_WHEEL_UP) {
410 } else if (evt->btn->button == INPUT_BUTTON_WHEEL_DOWN) {
414 s->mouse_buttons &= ~bmap[evt->btn->button];
424 static void ps2_mouse_sync(DeviceState *dev)
426 PS2MouseState *s = (PS2MouseState *)dev;
428 if (s->mouse_buttons) {
429 qemu_system_wakeup_request(QEMU_WAKEUP_REASON_OTHER);
431 if (!(s->mouse_status & MOUSE_STATUS_REMOTE)) {
432 while (s->common.queue.count < PS2_QUEUE_SIZE - 4) {
433 /* if not remote, send event. Multiple events are sent if
435 ps2_mouse_send_packet(s);
436 if (s->mouse_dx == 0 && s->mouse_dy == 0 && s->mouse_dz == 0)
442 void ps2_mouse_fake_event(void *opaque)
444 PS2MouseState *s = opaque;
445 trace_ps2_mouse_fake_event(opaque);
447 ps2_mouse_sync(opaque);
450 void ps2_write_mouse(void *opaque, int val)
452 PS2MouseState *s = (PS2MouseState *)opaque;
454 trace_ps2_write_mouse(opaque, val);
456 printf("kbd: write mouse 0x%02x\n", val);
458 switch(s->common.write_cmd) {
463 if (val == AUX_RESET_WRAP) {
465 ps2_queue(&s->common, AUX_ACK);
467 } else if (val != AUX_RESET) {
468 ps2_queue(&s->common, val);
473 case AUX_SET_SCALE11:
474 s->mouse_status &= ~MOUSE_STATUS_SCALE21;
475 ps2_queue(&s->common, AUX_ACK);
477 case AUX_SET_SCALE21:
478 s->mouse_status |= MOUSE_STATUS_SCALE21;
479 ps2_queue(&s->common, AUX_ACK);
482 s->mouse_status &= ~MOUSE_STATUS_REMOTE;
483 ps2_queue(&s->common, AUX_ACK);
487 ps2_queue(&s->common, AUX_ACK);
490 s->mouse_status |= MOUSE_STATUS_REMOTE;
491 ps2_queue(&s->common, AUX_ACK);
494 ps2_queue(&s->common, AUX_ACK);
495 ps2_queue(&s->common, s->mouse_type);
499 s->common.write_cmd = val;
500 ps2_queue(&s->common, AUX_ACK);
503 ps2_queue(&s->common, AUX_ACK);
504 ps2_queue(&s->common, s->mouse_status);
505 ps2_queue(&s->common, s->mouse_resolution);
506 ps2_queue(&s->common, s->mouse_sample_rate);
509 ps2_queue(&s->common, AUX_ACK);
510 ps2_mouse_send_packet(s);
513 s->mouse_status |= MOUSE_STATUS_ENABLED;
514 ps2_queue(&s->common, AUX_ACK);
516 case AUX_DISABLE_DEV:
517 s->mouse_status &= ~MOUSE_STATUS_ENABLED;
518 ps2_queue(&s->common, AUX_ACK);
520 case AUX_SET_DEFAULT:
521 s->mouse_sample_rate = 100;
522 s->mouse_resolution = 2;
524 ps2_queue(&s->common, AUX_ACK);
527 s->mouse_sample_rate = 100;
528 s->mouse_resolution = 2;
531 ps2_queue(&s->common, AUX_ACK);
532 ps2_queue(&s->common, 0xaa);
533 ps2_queue(&s->common, s->mouse_type);
540 s->mouse_sample_rate = val;
541 /* detect IMPS/2 or IMEX */
542 switch(s->mouse_detect_state) {
546 s->mouse_detect_state = 1;
550 s->mouse_detect_state = 2;
552 s->mouse_detect_state = 3;
554 s->mouse_detect_state = 0;
558 s->mouse_type = 3; /* IMPS/2 */
559 s->mouse_detect_state = 0;
563 s->mouse_type = 4; /* IMEX */
564 s->mouse_detect_state = 0;
567 ps2_queue(&s->common, AUX_ACK);
568 s->common.write_cmd = -1;
571 s->mouse_resolution = val;
572 ps2_queue(&s->common, AUX_ACK);
573 s->common.write_cmd = -1;
578 static void ps2_common_reset(PS2State *s)
586 s->update_irq(s->update_arg, 0);
589 static void ps2_common_post_load(PS2State *s)
591 PS2Queue *q = &s->queue;
594 int tmp_data[PS2_QUEUE_SIZE];
596 /* set the useful data buffer queue size, < PS2_QUEUE_SIZE */
597 size = q->count > PS2_QUEUE_SIZE ? 0 : q->count;
599 /* move the queue elements to the start of data array */
601 for (i = 0; i < size; i++) {
602 /* move the queue elements to the temporary buffer */
603 tmp_data[i] = q->data[q->rptr];
604 if (++q->rptr == 256) {
608 memcpy(q->data, tmp_data, size);
610 /* reset rptr/wptr/count */
614 s->update_irq(s->update_arg, q->count != 0);
617 static void ps2_kbd_reset(void *opaque)
619 PS2KbdState *s = (PS2KbdState *) opaque;
621 trace_ps2_kbd_reset(opaque);
622 ps2_common_reset(&s->common);
628 static void ps2_mouse_reset(void *opaque)
630 PS2MouseState *s = (PS2MouseState *) opaque;
632 trace_ps2_mouse_reset(opaque);
633 ps2_common_reset(&s->common);
635 s->mouse_resolution = 0;
636 s->mouse_sample_rate = 0;
639 s->mouse_detect_state = 0;
643 s->mouse_buttons = 0;
646 static const VMStateDescription vmstate_ps2_common = {
647 .name = "PS2 Common State",
649 .minimum_version_id = 2,
650 .fields = (VMStateField[]) {
651 VMSTATE_INT32(write_cmd, PS2State),
652 VMSTATE_INT32(queue.rptr, PS2State),
653 VMSTATE_INT32(queue.wptr, PS2State),
654 VMSTATE_INT32(queue.count, PS2State),
655 VMSTATE_BUFFER(queue.data, PS2State),
656 VMSTATE_END_OF_LIST()
660 static bool ps2_keyboard_ledstate_needed(void *opaque)
662 PS2KbdState *s = opaque;
664 return s->ledstate != 0; /* 0 is default state */
667 static int ps2_kbd_ledstate_post_load(void *opaque, int version_id)
669 PS2KbdState *s = opaque;
671 kbd_put_ledstate(s->ledstate);
675 static const VMStateDescription vmstate_ps2_keyboard_ledstate = {
676 .name = "ps2kbd/ledstate",
678 .minimum_version_id = 2,
679 .post_load = ps2_kbd_ledstate_post_load,
680 .needed = ps2_keyboard_ledstate_needed,
681 .fields = (VMStateField[]) {
682 VMSTATE_INT32(ledstate, PS2KbdState),
683 VMSTATE_END_OF_LIST()
687 static int ps2_kbd_post_load(void* opaque, int version_id)
689 PS2KbdState *s = (PS2KbdState*)opaque;
690 PS2State *ps2 = &s->common;
695 ps2_common_post_load(ps2);
700 static void ps2_kbd_pre_save(void *opaque)
702 PS2KbdState *s = (PS2KbdState *)opaque;
703 PS2State *ps2 = &s->common;
705 ps2_common_post_load(ps2);
708 static const VMStateDescription vmstate_ps2_keyboard = {
711 .minimum_version_id = 2,
712 .post_load = ps2_kbd_post_load,
713 .pre_save = ps2_kbd_pre_save,
714 .fields = (VMStateField[]) {
715 VMSTATE_STRUCT(common, PS2KbdState, 0, vmstate_ps2_common, PS2State),
716 VMSTATE_INT32(scan_enabled, PS2KbdState),
717 VMSTATE_INT32(translate, PS2KbdState),
718 VMSTATE_INT32_V(scancode_set, PS2KbdState,3),
719 VMSTATE_END_OF_LIST()
721 .subsections = (const VMStateDescription*[]) {
722 &vmstate_ps2_keyboard_ledstate,
727 static int ps2_mouse_post_load(void *opaque, int version_id)
729 PS2MouseState *s = (PS2MouseState *)opaque;
730 PS2State *ps2 = &s->common;
732 ps2_common_post_load(ps2);
737 static void ps2_mouse_pre_save(void *opaque)
739 PS2MouseState *s = (PS2MouseState *)opaque;
740 PS2State *ps2 = &s->common;
742 ps2_common_post_load(ps2);
745 static const VMStateDescription vmstate_ps2_mouse = {
748 .minimum_version_id = 2,
749 .post_load = ps2_mouse_post_load,
750 .pre_save = ps2_mouse_pre_save,
751 .fields = (VMStateField[]) {
752 VMSTATE_STRUCT(common, PS2MouseState, 0, vmstate_ps2_common, PS2State),
753 VMSTATE_UINT8(mouse_status, PS2MouseState),
754 VMSTATE_UINT8(mouse_resolution, PS2MouseState),
755 VMSTATE_UINT8(mouse_sample_rate, PS2MouseState),
756 VMSTATE_UINT8(mouse_wrap, PS2MouseState),
757 VMSTATE_UINT8(mouse_type, PS2MouseState),
758 VMSTATE_UINT8(mouse_detect_state, PS2MouseState),
759 VMSTATE_INT32(mouse_dx, PS2MouseState),
760 VMSTATE_INT32(mouse_dy, PS2MouseState),
761 VMSTATE_INT32(mouse_dz, PS2MouseState),
762 VMSTATE_UINT8(mouse_buttons, PS2MouseState),
763 VMSTATE_END_OF_LIST()
767 static QemuInputHandler ps2_keyboard_handler = {
768 .name = "QEMU PS/2 Keyboard",
769 .mask = INPUT_EVENT_MASK_KEY,
770 .event = ps2_keyboard_event,
773 void *ps2_kbd_init(void (*update_irq)(void *, int), void *update_arg)
775 PS2KbdState *s = (PS2KbdState *)g_malloc0(sizeof(PS2KbdState));
777 trace_ps2_kbd_init(s);
778 s->common.update_irq = update_irq;
779 s->common.update_arg = update_arg;
781 vmstate_register(NULL, 0, &vmstate_ps2_keyboard, s);
782 qemu_input_handler_register((DeviceState *)s,
783 &ps2_keyboard_handler);
784 qemu_register_reset(ps2_kbd_reset, s);
788 static QemuInputHandler ps2_mouse_handler = {
789 .name = "QEMU PS/2 Mouse",
790 .mask = INPUT_EVENT_MASK_BTN | INPUT_EVENT_MASK_REL,
791 .event = ps2_mouse_event,
792 .sync = ps2_mouse_sync,
795 void *ps2_mouse_init(void (*update_irq)(void *, int), void *update_arg)
797 PS2MouseState *s = (PS2MouseState *)g_malloc0(sizeof(PS2MouseState));
799 trace_ps2_mouse_init(s);
800 s->common.update_irq = update_irq;
801 s->common.update_arg = update_arg;
802 vmstate_register(NULL, 0, &vmstate_ps2_mouse, s);
803 qemu_input_handler_register((DeviceState *)s,
805 qemu_register_reset(ps2_mouse_reset, s);