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qemu/hw/ps2.c
Paolo Bonzini 83c9f4ca79 hw: include hw header files with full paths 
Done with this script:

cd hw
for i in `find . -name '*.h' | sed 's/^..//'`; do
  echo '\,^#.*include.*["<]'$i'[">], s,'$i',hw/&,'
done | sed -i -f - `find . -type f`

This is so that paths remain valid as files are moved.

Instead, files in hw/dataplane are referenced with the relative path.
We know they are not going to move to include/, and they are the only
include files that are in subdirectories _and_ move.

Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2013-03-01 15:01:17 +01:00

676 lines
20 KiB
C
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/*
* QEMU PS/2 keyboard/mouse emulation
*
* Copyright (c) 2003 Fabrice Bellard
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
*/
#include "hw/hw.h"
#include "hw/ps2.h"
#include "ui/console.h"
#include "sysemu/sysemu.h"
/* debug PC keyboard */
//#define DEBUG_KBD
/* debug PC keyboard : only mouse */
//#define DEBUG_MOUSE
/* Keyboard Commands */
#define KBD_CMD_SET_LEDS 0xED /* Set keyboard leds */
#define KBD_CMD_ECHO 0xEE
#define KBD_CMD_SCANCODE 0xF0 /* Get/set scancode set */
#define KBD_CMD_GET_ID 0xF2 /* get keyboard ID */
#define KBD_CMD_SET_RATE 0xF3 /* Set typematic rate */
#define KBD_CMD_ENABLE 0xF4 /* Enable scanning */
#define KBD_CMD_RESET_DISABLE 0xF5 /* reset and disable scanning */
#define KBD_CMD_RESET_ENABLE 0xF6 /* reset and enable scanning */
#define KBD_CMD_RESET 0xFF /* Reset */
/* Keyboard Replies */
#define KBD_REPLY_POR 0xAA /* Power on reset */
#define KBD_REPLY_ID 0xAB /* Keyboard ID */
#define KBD_REPLY_ACK 0xFA /* Command ACK */
#define KBD_REPLY_RESEND 0xFE /* Command NACK, send the cmd again */
/* Mouse Commands */
#define AUX_SET_SCALE11 0xE6 /* Set 1:1 scaling */
#define AUX_SET_SCALE21 0xE7 /* Set 2:1 scaling */
#define AUX_SET_RES 0xE8 /* Set resolution */
#define AUX_GET_SCALE 0xE9 /* Get scaling factor */
#define AUX_SET_STREAM 0xEA /* Set stream mode */
#define AUX_POLL 0xEB /* Poll */
#define AUX_RESET_WRAP 0xEC /* Reset wrap mode */
#define AUX_SET_WRAP 0xEE /* Set wrap mode */
#define AUX_SET_REMOTE 0xF0 /* Set remote mode */
#define AUX_GET_TYPE 0xF2 /* Get type */
#define AUX_SET_SAMPLE 0xF3 /* Set sample rate */
#define AUX_ENABLE_DEV 0xF4 /* Enable aux device */
#define AUX_DISABLE_DEV 0xF5 /* Disable aux device */
#define AUX_SET_DEFAULT 0xF6
#define AUX_RESET 0xFF /* Reset aux device */
#define AUX_ACK 0xFA /* Command byte ACK. */
#define MOUSE_STATUS_REMOTE 0x40
#define MOUSE_STATUS_ENABLED 0x20
#define MOUSE_STATUS_SCALE21 0x10
#define PS2_QUEUE_SIZE 256
typedef struct {
uint8_t data[PS2_QUEUE_SIZE];
int rptr, wptr, count;
} PS2Queue;
typedef struct {
PS2Queue queue;
int32_t write_cmd;
void (*update_irq)(void *, int);
void *update_arg;
} PS2State;
typedef struct {
PS2State common;
int scan_enabled;
/* QEMU uses translated PC scancodes internally. To avoid multiple
conversions we do the translation (if any) in the PS/2 emulation
not the keyboard controller. */
int translate;
int scancode_set; /* 1=XT, 2=AT, 3=PS/2 */
int ledstate;
} PS2KbdState;
typedef struct {
PS2State common;
uint8_t mouse_status;
uint8_t mouse_resolution;
uint8_t mouse_sample_rate;
uint8_t mouse_wrap;
uint8_t mouse_type; /* 0 = PS2, 3 = IMPS/2, 4 = IMEX */
uint8_t mouse_detect_state;
int mouse_dx; /* current values, needed for 'poll' mode */
int mouse_dy;
int mouse_dz;
uint8_t mouse_buttons;
} PS2MouseState;
/* Table to convert from PC scancodes to raw scancodes. */
static const unsigned char ps2_raw_keycode[128] = {
0, 118, 22, 30, 38, 37, 46, 54, 61, 62, 70, 69, 78, 85, 102, 13,
21, 29, 36, 45, 44, 53, 60, 67, 68, 77, 84, 91, 90, 20, 28, 27,
35, 43, 52, 51, 59, 66, 75, 76, 82, 14, 18, 93, 26, 34, 33, 42,
50, 49, 58, 65, 73, 74, 89, 124, 17, 41, 88, 5, 6, 4, 12, 3,
11, 2, 10, 1, 9, 119, 126, 108, 117, 125, 123, 107, 115, 116, 121, 105,
114, 122, 112, 113, 127, 96, 97, 120, 7, 15, 23, 31, 39, 47, 55, 63,
71, 79, 86, 94, 8, 16, 24, 32, 40, 48, 56, 64, 72, 80, 87, 111,
19, 25, 57, 81, 83, 92, 95, 98, 99, 100, 101, 103, 104, 106, 109, 110
};
static const unsigned char ps2_raw_keycode_set3[128] = {
0, 8, 22, 30, 38, 37, 46, 54, 61, 62, 70, 69, 78, 85, 102, 13,
21, 29, 36, 45, 44, 53, 60, 67, 68, 77, 84, 91, 90, 17, 28, 27,
35, 43, 52, 51, 59, 66, 75, 76, 82, 14, 18, 92, 26, 34, 33, 42,
50, 49, 58, 65, 73, 74, 89, 126, 25, 41, 20, 7, 15, 23, 31, 39,
47, 2, 63, 71, 79, 118, 95, 108, 117, 125, 132, 107, 115, 116, 124, 105,
114, 122, 112, 113, 127, 96, 97, 86, 94, 15, 23, 31, 39, 47, 55, 63,
71, 79, 86, 94, 8, 16, 24, 32, 40, 48, 56, 64, 72, 80, 87, 111,
19, 25, 57, 81, 83, 92, 95, 98, 99, 100, 101, 103, 104, 106, 109, 110
};
void ps2_queue(void *opaque, int b)
{
PS2State *s = (PS2State *)opaque;
PS2Queue *q = &s->queue;
if (q->count >= PS2_QUEUE_SIZE)
return;
q->data[q->wptr] = b;
if (++q->wptr == PS2_QUEUE_SIZE)
q->wptr = 0;
q->count++;
s->update_irq(s->update_arg, 1);
}
/*
keycode is expressed as follow:
bit 7 - 0 key pressed, 1 = key released
bits 6-0 - translated scancode set 2
*/
static void ps2_put_keycode(void *opaque, int keycode)
{
PS2KbdState *s = opaque;
qemu_system_wakeup_request(QEMU_WAKEUP_REASON_OTHER);
/* XXX: add support for scancode set 1 */
if (!s->translate && keycode < 0xe0 && s->scancode_set > 1) {
if (keycode & 0x80) {
ps2_queue(&s->common, 0xf0);
}
if (s->scancode_set == 2) {
keycode = ps2_raw_keycode[keycode & 0x7f];
} else if (s->scancode_set == 3) {
keycode = ps2_raw_keycode_set3[keycode & 0x7f];
}
}
ps2_queue(&s->common, keycode);
}
uint32_t ps2_read_data(void *opaque)
{
PS2State *s = (PS2State *)opaque;
PS2Queue *q;
int val, index;
q = &s->queue;
if (q->count == 0) {
/* NOTE: if no data left, we return the last keyboard one
(needed for EMM386) */
/* XXX: need a timer to do things correctly */
index = q->rptr - 1;
if (index < 0)
index = PS2_QUEUE_SIZE - 1;
val = q->data[index];
} else {
val = q->data[q->rptr];
if (++q->rptr == PS2_QUEUE_SIZE)
q->rptr = 0;
q->count--;
/* reading deasserts IRQ */
s->update_irq(s->update_arg, 0);
/* reassert IRQs if data left */
s->update_irq(s->update_arg, q->count != 0);
}
return val;
}
static void ps2_set_ledstate(PS2KbdState *s, int ledstate)
{
s->ledstate = ledstate;
kbd_put_ledstate(ledstate);
}
static void ps2_reset_keyboard(PS2KbdState *s)
{
s->scan_enabled = 1;
s->scancode_set = 2;
ps2_set_ledstate(s, 0);
}
void ps2_write_keyboard(void *opaque, int val)
{
PS2KbdState *s = (PS2KbdState *)opaque;
switch(s->common.write_cmd) {
default:
case -1:
switch(val) {
case 0x00:
ps2_queue(&s->common, KBD_REPLY_ACK);
break;
case 0x05:
ps2_queue(&s->common, KBD_REPLY_RESEND);
break;
case KBD_CMD_GET_ID:
ps2_queue(&s->common, KBD_REPLY_ACK);
/* We emulate a MF2 AT keyboard here */
ps2_queue(&s->common, KBD_REPLY_ID);
if (s->translate)
ps2_queue(&s->common, 0x41);
else
ps2_queue(&s->common, 0x83);
break;
case KBD_CMD_ECHO:
ps2_queue(&s->common, KBD_CMD_ECHO);
break;
case KBD_CMD_ENABLE:
s->scan_enabled = 1;
ps2_queue(&s->common, KBD_REPLY_ACK);
break;
case KBD_CMD_SCANCODE:
case KBD_CMD_SET_LEDS:
case KBD_CMD_SET_RATE:
s->common.write_cmd = val;
ps2_queue(&s->common, KBD_REPLY_ACK);
break;
case KBD_CMD_RESET_DISABLE:
ps2_reset_keyboard(s);
s->scan_enabled = 0;
ps2_queue(&s->common, KBD_REPLY_ACK);
break;
case KBD_CMD_RESET_ENABLE:
ps2_reset_keyboard(s);
s->scan_enabled = 1;
ps2_queue(&s->common, KBD_REPLY_ACK);
break;
case KBD_CMD_RESET:
ps2_reset_keyboard(s);
ps2_queue(&s->common, KBD_REPLY_ACK);
ps2_queue(&s->common, KBD_REPLY_POR);
break;
default:
ps2_queue(&s->common, KBD_REPLY_ACK);
break;
}
break;
case KBD_CMD_SCANCODE:
if (val == 0) {
if (s->scancode_set == 1)
ps2_put_keycode(s, 0x43);
else if (s->scancode_set == 2)
ps2_put_keycode(s, 0x41);
else if (s->scancode_set == 3)
ps2_put_keycode(s, 0x3f);
} else {
if (val >= 1 && val <= 3)
s->scancode_set = val;
ps2_queue(&s->common, KBD_REPLY_ACK);
}
s->common.write_cmd = -1;
break;
case KBD_CMD_SET_LEDS:
ps2_set_ledstate(s, val);
ps2_queue(&s->common, KBD_REPLY_ACK);
s->common.write_cmd = -1;
break;
case KBD_CMD_SET_RATE:
ps2_queue(&s->common, KBD_REPLY_ACK);
s->common.write_cmd = -1;
break;
}
}
/* Set the scancode translation mode.
0 = raw scancodes.
1 = translated scancodes (used by qemu internally). */
void ps2_keyboard_set_translation(void *opaque, int mode)
{
PS2KbdState *s = (PS2KbdState *)opaque;
s->translate = mode;
}
static void ps2_mouse_send_packet(PS2MouseState *s)
{
unsigned int b;
int dx1, dy1, dz1;
dx1 = s->mouse_dx;
dy1 = s->mouse_dy;
dz1 = s->mouse_dz;
/* XXX: increase range to 8 bits ? */
if (dx1 > 127)
dx1 = 127;
else if (dx1 < -127)
dx1 = -127;
if (dy1 > 127)
dy1 = 127;
else if (dy1 < -127)
dy1 = -127;
b = 0x08 | ((dx1 < 0) << 4) | ((dy1 < 0) << 5) | (s->mouse_buttons & 0x07);
ps2_queue(&s->common, b);
ps2_queue(&s->common, dx1 & 0xff);
ps2_queue(&s->common, dy1 & 0xff);
/* extra byte for IMPS/2 or IMEX */
switch(s->mouse_type) {
default:
break;
case 3:
if (dz1 > 127)
dz1 = 127;
else if (dz1 < -127)
dz1 = -127;
ps2_queue(&s->common, dz1 & 0xff);
break;
case 4:
if (dz1 > 7)
dz1 = 7;
else if (dz1 < -7)
dz1 = -7;
b = (dz1 & 0x0f) | ((s->mouse_buttons & 0x18) << 1);
ps2_queue(&s->common, b);
break;
}
/* update deltas */
s->mouse_dx -= dx1;
s->mouse_dy -= dy1;
s->mouse_dz -= dz1;
}
static void ps2_mouse_event(void *opaque,
int dx, int dy, int dz, int buttons_state)
{
PS2MouseState *s = opaque;
/* check if deltas are recorded when disabled */
if (!(s->mouse_status & MOUSE_STATUS_ENABLED))
return;
s->mouse_dx += dx;
s->mouse_dy -= dy;
s->mouse_dz += dz;
/* XXX: SDL sometimes generates nul events: we delete them */
if (s->mouse_dx == 0 && s->mouse_dy == 0 && s->mouse_dz == 0 &&
s->mouse_buttons == buttons_state)
return;
s->mouse_buttons = buttons_state;
if (buttons_state) {
qemu_system_wakeup_request(QEMU_WAKEUP_REASON_OTHER);
}
if (!(s->mouse_status & MOUSE_STATUS_REMOTE) &&
(s->common.queue.count < (PS2_QUEUE_SIZE - 16))) {
for(;;) {
/* if not remote, send event. Multiple events are sent if
too big deltas */
ps2_mouse_send_packet(s);
if (s->mouse_dx == 0 && s->mouse_dy == 0 && s->mouse_dz == 0)
break;
}
}
}
void ps2_mouse_fake_event(void *opaque)
{
ps2_mouse_event(opaque, 1, 0, 0, 0);
}
void ps2_write_mouse(void *opaque, int val)
{
PS2MouseState *s = (PS2MouseState *)opaque;
#ifdef DEBUG_MOUSE
printf("kbd: write mouse 0x%02x\n", val);
#endif
switch(s->common.write_cmd) {
default:
case -1:
/* mouse command */
if (s->mouse_wrap) {
if (val == AUX_RESET_WRAP) {
s->mouse_wrap = 0;
ps2_queue(&s->common, AUX_ACK);
return;
} else if (val != AUX_RESET) {
ps2_queue(&s->common, val);
return;
}
}
switch(val) {
case AUX_SET_SCALE11:
s->mouse_status &= ~MOUSE_STATUS_SCALE21;
ps2_queue(&s->common, AUX_ACK);
break;
case AUX_SET_SCALE21:
s->mouse_status |= MOUSE_STATUS_SCALE21;
ps2_queue(&s->common, AUX_ACK);
break;
case AUX_SET_STREAM:
s->mouse_status &= ~MOUSE_STATUS_REMOTE;
ps2_queue(&s->common, AUX_ACK);
break;
case AUX_SET_WRAP:
s->mouse_wrap = 1;
ps2_queue(&s->common, AUX_ACK);
break;
case AUX_SET_REMOTE:
s->mouse_status |= MOUSE_STATUS_REMOTE;
ps2_queue(&s->common, AUX_ACK);
break;
case AUX_GET_TYPE:
ps2_queue(&s->common, AUX_ACK);
ps2_queue(&s->common, s->mouse_type);
break;
case AUX_SET_RES:
case AUX_SET_SAMPLE:
s->common.write_cmd = val;
ps2_queue(&s->common, AUX_ACK);
break;
case AUX_GET_SCALE:
ps2_queue(&s->common, AUX_ACK);
ps2_queue(&s->common, s->mouse_status);
ps2_queue(&s->common, s->mouse_resolution);
ps2_queue(&s->common, s->mouse_sample_rate);
break;
case AUX_POLL:
ps2_queue(&s->common, AUX_ACK);
ps2_mouse_send_packet(s);
break;
case AUX_ENABLE_DEV:
s->mouse_status |= MOUSE_STATUS_ENABLED;
ps2_queue(&s->common, AUX_ACK);
break;
case AUX_DISABLE_DEV:
s->mouse_status &= ~MOUSE_STATUS_ENABLED;
ps2_queue(&s->common, AUX_ACK);
break;
case AUX_SET_DEFAULT:
s->mouse_sample_rate = 100;
s->mouse_resolution = 2;
s->mouse_status = 0;
ps2_queue(&s->common, AUX_ACK);
break;
case AUX_RESET:
s->mouse_sample_rate = 100;
s->mouse_resolution = 2;
s->mouse_status = 0;
s->mouse_type = 0;
ps2_queue(&s->common, AUX_ACK);
ps2_queue(&s->common, 0xaa);
ps2_queue(&s->common, s->mouse_type);
break;
default:
break;
}
break;
case AUX_SET_SAMPLE:
s->mouse_sample_rate = val;
/* detect IMPS/2 or IMEX */
switch(s->mouse_detect_state) {
default:
case 0:
if (val == 200)
s->mouse_detect_state = 1;
break;
case 1:
if (val == 100)
s->mouse_detect_state = 2;
else if (val == 200)
s->mouse_detect_state = 3;
else
s->mouse_detect_state = 0;
break;
case 2:
if (val == 80)
s->mouse_type = 3; /* IMPS/2 */
s->mouse_detect_state = 0;
break;
case 3:
if (val == 80)
s->mouse_type = 4; /* IMEX */
s->mouse_detect_state = 0;
break;
}
ps2_queue(&s->common, AUX_ACK);
s->common.write_cmd = -1;
break;
case AUX_SET_RES:
s->mouse_resolution = val;
ps2_queue(&s->common, AUX_ACK);
s->common.write_cmd = -1;
break;
}
}
static void ps2_common_reset(PS2State *s)
{
PS2Queue *q;
s->write_cmd = -1;
q = &s->queue;
q->rptr = 0;
q->wptr = 0;
q->count = 0;
s->update_irq(s->update_arg, 0);
}
static void ps2_kbd_reset(void *opaque)
{
PS2KbdState *s = (PS2KbdState *) opaque;
ps2_common_reset(&s->common);
s->scan_enabled = 0;
s->translate = 0;
s->scancode_set = 0;
}
static void ps2_mouse_reset(void *opaque)
{
PS2MouseState *s = (PS2MouseState *) opaque;
ps2_common_reset(&s->common);
s->mouse_status = 0;
s->mouse_resolution = 0;
s->mouse_sample_rate = 0;
s->mouse_wrap = 0;
s->mouse_type = 0;
s->mouse_detect_state = 0;
s->mouse_dx = 0;
s->mouse_dy = 0;
s->mouse_dz = 0;
s->mouse_buttons = 0;
}
static const VMStateDescription vmstate_ps2_common = {
.name = "PS2 Common State",
.version_id = 3,
.minimum_version_id = 2,
.minimum_version_id_old = 2,
.fields = (VMStateField []) {
VMSTATE_INT32(write_cmd, PS2State),
VMSTATE_INT32(queue.rptr, PS2State),
VMSTATE_INT32(queue.wptr, PS2State),
VMSTATE_INT32(queue.count, PS2State),
VMSTATE_BUFFER(queue.data, PS2State),
VMSTATE_END_OF_LIST()
}
};
static bool ps2_keyboard_ledstate_needed(void *opaque)
{
PS2KbdState *s = opaque;
return s->ledstate != 0; /* 0 is default state */
}
static int ps2_kbd_ledstate_post_load(void *opaque, int version_id)
{
PS2KbdState *s = opaque;
kbd_put_ledstate(s->ledstate);
return 0;
}
static const VMStateDescription vmstate_ps2_keyboard_ledstate = {
.name = "ps2kbd/ledstate",
.version_id = 3,
.minimum_version_id = 2,
.minimum_version_id_old = 2,
.post_load = ps2_kbd_ledstate_post_load,
.fields = (VMStateField []) {
VMSTATE_INT32(ledstate, PS2KbdState),
VMSTATE_END_OF_LIST()
}
};
static int ps2_kbd_post_load(void* opaque, int version_id)
{
PS2KbdState *s = (PS2KbdState*)opaque;
if (version_id == 2)
s->scancode_set=2;
return 0;
}
static const VMStateDescription vmstate_ps2_keyboard = {
.name = "ps2kbd",
.version_id = 3,
.minimum_version_id = 2,
.minimum_version_id_old = 2,
.post_load = ps2_kbd_post_load,
.fields = (VMStateField []) {
VMSTATE_STRUCT(common, PS2KbdState, 0, vmstate_ps2_common, PS2State),
VMSTATE_INT32(scan_enabled, PS2KbdState),
VMSTATE_INT32(translate, PS2KbdState),
VMSTATE_INT32_V(scancode_set, PS2KbdState,3),
VMSTATE_END_OF_LIST()
},
.subsections = (VMStateSubsection []) {
{
.vmsd = &vmstate_ps2_keyboard_ledstate,
.needed = ps2_keyboard_ledstate_needed,
}, {
/* empty */
}
}
};
static const VMStateDescription vmstate_ps2_mouse = {
.name = "ps2mouse",
.version_id = 2,
.minimum_version_id = 2,
.minimum_version_id_old = 2,
.fields = (VMStateField []) {
VMSTATE_STRUCT(common, PS2MouseState, 0, vmstate_ps2_common, PS2State),
VMSTATE_UINT8(mouse_status, PS2MouseState),
VMSTATE_UINT8(mouse_resolution, PS2MouseState),
VMSTATE_UINT8(mouse_sample_rate, PS2MouseState),
VMSTATE_UINT8(mouse_wrap, PS2MouseState),
VMSTATE_UINT8(mouse_type, PS2MouseState),
VMSTATE_UINT8(mouse_detect_state, PS2MouseState),
VMSTATE_INT32(mouse_dx, PS2MouseState),
VMSTATE_INT32(mouse_dy, PS2MouseState),
VMSTATE_INT32(mouse_dz, PS2MouseState),
VMSTATE_UINT8(mouse_buttons, PS2MouseState),
VMSTATE_END_OF_LIST()
}
};
void *ps2_kbd_init(void (*update_irq)(void *, int), void *update_arg)
{
PS2KbdState *s = (PS2KbdState *)g_malloc0(sizeof(PS2KbdState));
s->common.update_irq = update_irq;
s->common.update_arg = update_arg;
s->scancode_set = 2;
vmstate_register(NULL, 0, &vmstate_ps2_keyboard, s);
qemu_add_kbd_event_handler(ps2_put_keycode, s);
qemu_register_reset(ps2_kbd_reset, s);
return s;
}
void *ps2_mouse_init(void (*update_irq)(void *, int), void *update_arg)
{
PS2MouseState *s = (PS2MouseState *)g_malloc0(sizeof(PS2MouseState));
s->common.update_irq = update_irq;
s->common.update_arg = update_arg;
vmstate_register(NULL, 0, &vmstate_ps2_mouse, s);
qemu_add_mouse_event_handler(ps2_mouse_event, s, 0, "QEMU PS/2 Mouse");
qemu_register_reset(ps2_mouse_reset, s);
return s;
}
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