[qemu.git] / hw / ps2.c

/*
 * 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.h"
#include "ps2.h"
#include "console.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 */
} 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
};

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;

    /* XXX: add support for scancode sets 1 and 3 */
    if (!s->translate && keycode < 0xe0 && s->scancode_set == 2)
      {
        if (keycode & 0x80)
            ps2_queue(&s->common, 0xf0);
        keycode = ps2_raw_keycode[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_reset_keyboard(PS2KbdState *s)
{
    s->scan_enabled = 1;
    s->scancode_set = 2;
    kbd_put_ledstate(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:
        kbd_put_ledstate(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 (!(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 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()
    }
};

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 *)qemu_mallocz(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 *)qemu_mallocz(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;
}
Commit	Line	Data
0e43e99c FB	1	/*
0e43e99c FB	2	* QEMU PS/2 keyboard/mouse emulation
5fafdf24	3	*
0e43e99c	4	* Copyright (c) 2003 Fabrice Bellard
5fafdf24	5	*
0e43e99c FB	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	*/
87ecb68b PB	24	#include "hw.h"
	25	#include "ps2.h"
	26	#include "console.h"
0e43e99c FB	27
	28	/* debug PC keyboard */
	29	//#define DEBUG_KBD
	30
	31	/* debug PC keyboard : only mouse */
	32	//#define DEBUG_MOUSE
	33
	34	/* Keyboard Commands */
	35	#define KBD_CMD_SET_LEDS 0xED /* Set keyboard leds */
	36	#define KBD_CMD_ECHO 0xEE
e7d93956	37	#define KBD_CMD_SCANCODE 0xF0 /* Get/set scancode set */
0e43e99c FB	38	#define KBD_CMD_GET_ID 0xF2 /* get keyboard ID */
	39	#define KBD_CMD_SET_RATE 0xF3 /* Set typematic rate */
	40	#define KBD_CMD_ENABLE 0xF4 /* Enable scanning */
	41	#define KBD_CMD_RESET_DISABLE 0xF5 /* reset and disable scanning */
	42	#define KBD_CMD_RESET_ENABLE 0xF6 /* reset and enable scanning */
	43	#define KBD_CMD_RESET 0xFF /* Reset */
	44
	45	/* Keyboard Replies */
	46	#define KBD_REPLY_POR 0xAA /* Power on reset */
35c4d671	47	#define KBD_REPLY_ID 0xAB /* Keyboard ID */
0e43e99c FB	48	#define KBD_REPLY_ACK 0xFA /* Command ACK */
	49	#define KBD_REPLY_RESEND 0xFE /* Command NACK, send the cmd again */
	50
	51	/* Mouse Commands */
	52	#define AUX_SET_SCALE11 0xE6 /* Set 1:1 scaling */
	53	#define AUX_SET_SCALE21 0xE7 /* Set 2:1 scaling */
	54	#define AUX_SET_RES 0xE8 /* Set resolution */
	55	#define AUX_GET_SCALE 0xE9 /* Get scaling factor */
	56	#define AUX_SET_STREAM 0xEA /* Set stream mode */
	57	#define AUX_POLL 0xEB /* Poll */
	58	#define AUX_RESET_WRAP 0xEC /* Reset wrap mode */
	59	#define AUX_SET_WRAP 0xEE /* Set wrap mode */
	60	#define AUX_SET_REMOTE 0xF0 /* Set remote mode */
	61	#define AUX_GET_TYPE 0xF2 /* Get type */
	62	#define AUX_SET_SAMPLE 0xF3 /* Set sample rate */
	63	#define AUX_ENABLE_DEV 0xF4 /* Enable aux device */
	64	#define AUX_DISABLE_DEV 0xF5 /* Disable aux device */
	65	#define AUX_SET_DEFAULT 0xF6
	66	#define AUX_RESET 0xFF /* Reset aux device */
	67	#define AUX_ACK 0xFA /* Command byte ACK. */
	68
	69	#define MOUSE_STATUS_REMOTE 0x40
	70	#define MOUSE_STATUS_ENABLED 0x20
	71	#define MOUSE_STATUS_SCALE21 0x10
	72
	73	#define PS2_QUEUE_SIZE 256
	74
	75	typedef struct {
	76	uint8_t data[PS2_QUEUE_SIZE];
	77	int rptr, wptr, count;
	78	} PS2Queue;
	79
	80	typedef struct {
	81	PS2Queue queue;
	82	int32_t write_cmd;
	83	void (update_irq)(void , int);
	84	void *update_arg;
	85	} PS2State;
	86
	87	typedef struct {
	88	PS2State common;
	89	int scan_enabled;
f94f5d71 PB	90	/* Qemu uses translated PC scancodes internally. To avoid multiple
	91	conversions we do the translation (if any) in the PS/2 emulation
	92	not the keyboard controller. */
	93	int translate;
e7d93956	94	int scancode_set; /* 1=XT, 2=AT, 3=PS/2 */
0e43e99c FB	95	} PS2KbdState;
	96
	97	typedef struct {
	98	PS2State common;
	99	uint8_t mouse_status;
	100	uint8_t mouse_resolution;
	101	uint8_t mouse_sample_rate;
	102	uint8_t mouse_wrap;
	103	uint8_t mouse_type; /* 0 = PS2, 3 = IMPS/2, 4 = IMEX */
	104	uint8_t mouse_detect_state;
	105	int mouse_dx; /* current values, needed for 'poll' mode */
	106	int mouse_dy;
	107	int mouse_dz;
	108	uint8_t mouse_buttons;
	109	} PS2MouseState;
	110
f94f5d71 PB	111	/* Table to convert from PC scancodes to raw scancodes. */
	112	static const unsigned char ps2_raw_keycode[128] = {
	113	0,118, 22, 30, 38, 37, 46, 54, 61, 62, 70, 69, 78, 85,102, 13,
	114	21, 29, 36, 45, 44, 53, 60, 67, 68, 77, 84, 91, 90, 20, 28, 27,
	115	35, 43, 52, 51, 59, 66, 75, 76, 82, 14, 18, 93, 26, 34, 33, 42,
	116	50, 49, 58, 65, 73, 74, 89,124, 17, 41, 88, 5, 6, 4, 12, 3,
	117	11, 2, 10, 1, 9,119,126,108,117,125,123,107,115,116,121,105,
	118	114,122,112,113,127, 96, 97,120, 7, 15, 23, 31, 39, 47, 55, 63,
	119	71, 79, 86, 94, 8, 16, 24, 32, 40, 48, 56, 64, 72, 80, 87,111,
	120	19, 25, 57, 81, 83, 92, 95, 98, 99,100,101,103,104,106,109,110
	121	};
	122
0e43e99c FB	123	void ps2_queue(void *opaque, int b)
	124	{
	125	PS2State s = (PS2State )opaque;
	126	PS2Queue *q = &s->queue;
	127
	128	if (q->count >= PS2_QUEUE_SIZE)
	129	return;
	130	q->data[q->wptr] = b;
	131	if (++q->wptr == PS2_QUEUE_SIZE)
	132	q->wptr = 0;
	133	q->count++;
	134	s->update_irq(s->update_arg, 1);
	135	}
	136
35c4d671 AJ	137	/*
	138	keycode is expressed as follow:
	139	bit 7 - 0 key pressed, 1 = key released
	140	bits 6-0 - translated scancode set 2
	141	*/
0e43e99c FB	142	static void ps2_put_keycode(void *opaque, int keycode)
0e43e99c FB	143	{
f94f5d71	144	PS2KbdState *s = opaque;
e7d93956 AJ	145
	146	/* XXX: add support for scancode sets 1 and 3 */
	147	if (!s->translate && keycode < 0xe0 && s->scancode_set == 2)
f94f5d71 PB	148	{
	149	if (keycode & 0x80)
	150	ps2_queue(&s->common, 0xf0);
	151	keycode = ps2_raw_keycode[keycode & 0x7f];
	152	}
0e43e99c FB	153	ps2_queue(&s->common, keycode);
	154	}
	155
	156	uint32_t ps2_read_data(void *opaque)
	157	{
	158	PS2State s = (PS2State )opaque;
	159	PS2Queue *q;
	160	int val, index;
3b46e624	161
0e43e99c FB	162	q = &s->queue;
	163	if (q->count == 0) {
	164	/* NOTE: if no data left, we return the last keyboard one
	165	(needed for EMM386) */
	166	/* XXX: need a timer to do things correctly */
	167	index = q->rptr - 1;
	168	if (index < 0)
	169	index = PS2_QUEUE_SIZE - 1;
	170	val = q->data[index];
	171	} else {
	172	val = q->data[q->rptr];
	173	if (++q->rptr == PS2_QUEUE_SIZE)
	174	q->rptr = 0;
	175	q->count--;
	176	/* reading deasserts IRQ */
	177	s->update_irq(s->update_arg, 0);
	178	/* reassert IRQs if data left */
	179	s->update_irq(s->update_arg, q->count != 0);
	180	}
	181	return val;
	182	}
	183
	184	static void ps2_reset_keyboard(PS2KbdState *s)
	185	{
	186	s->scan_enabled = 1;
e7d93956	187	s->scancode_set = 2;
6937b376	188	kbd_put_ledstate(0);
0e43e99c FB	189	}
	190
	191	void ps2_write_keyboard(void *opaque, int val)
	192	{
	193	PS2KbdState s = (PS2KbdState )opaque;
	194
	195	switch(s->common.write_cmd) {
	196	default:
	197	case -1:
	198	switch(val) {
	199	case 0x00:
	200	ps2_queue(&s->common, KBD_REPLY_ACK);
	201	break;
	202	case 0x05:
	203	ps2_queue(&s->common, KBD_REPLY_RESEND);
	204	break;
	205	case KBD_CMD_GET_ID:
	206	ps2_queue(&s->common, KBD_REPLY_ACK);
e7d93956	207	/* We emulate a MF2 AT keyboard here */
35c4d671 AJ	208	ps2_queue(&s->common, KBD_REPLY_ID);
	209	if (s->translate)
	210	ps2_queue(&s->common, 0x41);
	211	else
	212	ps2_queue(&s->common, 0x83);
0e43e99c FB	213	break;
	214	case KBD_CMD_ECHO:
	215	ps2_queue(&s->common, KBD_CMD_ECHO);
	216	break;
	217	case KBD_CMD_ENABLE:
	218	s->scan_enabled = 1;
	219	ps2_queue(&s->common, KBD_REPLY_ACK);
	220	break;
e7d93956	221	case KBD_CMD_SCANCODE:
0e43e99c FB	222	case KBD_CMD_SET_LEDS:
	223	case KBD_CMD_SET_RATE:
	224	s->common.write_cmd = val;
	225	ps2_queue(&s->common, KBD_REPLY_ACK);
	226	break;
	227	case KBD_CMD_RESET_DISABLE:
	228	ps2_reset_keyboard(s);
	229	s->scan_enabled = 0;
	230	ps2_queue(&s->common, KBD_REPLY_ACK);
	231	break;
	232	case KBD_CMD_RESET_ENABLE:
	233	ps2_reset_keyboard(s);
	234	s->scan_enabled = 1;
	235	ps2_queue(&s->common, KBD_REPLY_ACK);
	236	break;
	237	case KBD_CMD_RESET:
	238	ps2_reset_keyboard(s);
	239	ps2_queue(&s->common, KBD_REPLY_ACK);
	240	ps2_queue(&s->common, KBD_REPLY_POR);
	241	break;
	242	default:
	243	ps2_queue(&s->common, KBD_REPLY_ACK);
	244	break;
	245	}
	246	break;
e7d93956 AJ	247	case KBD_CMD_SCANCODE:
	248	if (val == 0) {
	249	if (s->scancode_set == 1)
	250	ps2_put_keycode(s, 0x43);
	251	else if (s->scancode_set == 2)
	252	ps2_put_keycode(s, 0x41);
	253	else if (s->scancode_set == 3)
	254	ps2_put_keycode(s, 0x3f);
	255	} else {
	256	if (val >= 1 && val <= 3)
	257	s->scancode_set = val;
	258	ps2_queue(&s->common, KBD_REPLY_ACK);
	259	}
	260	s->common.write_cmd = -1;
	261	break;
0e43e99c	262	case KBD_CMD_SET_LEDS:
6937b376	263	kbd_put_ledstate(val);
0e43e99c FB	264	ps2_queue(&s->common, KBD_REPLY_ACK);
	265	s->common.write_cmd = -1;
	266	break;
	267	case KBD_CMD_SET_RATE:
	268	ps2_queue(&s->common, KBD_REPLY_ACK);
	269	s->common.write_cmd = -1;
	270	break;
	271	}
	272	}
	273
f94f5d71 PB	274	/* Set the scancode translation mode.
	275	0 = raw scancodes.
	276	1 = translated scancodes (used by qemu internally). */
	277
	278	void ps2_keyboard_set_translation(void *opaque, int mode)
	279	{
	280	PS2KbdState s = (PS2KbdState )opaque;
	281	s->translate = mode;
	282	}
	283
0e43e99c FB	284	static void ps2_mouse_send_packet(PS2MouseState *s)
	285	{
	286	unsigned int b;
	287	int dx1, dy1, dz1;
	288
	289	dx1 = s->mouse_dx;
	290	dy1 = s->mouse_dy;
	291	dz1 = s->mouse_dz;
	292	/* XXX: increase range to 8 bits ? */
	293	if (dx1 > 127)
	294	dx1 = 127;
	295	else if (dx1 < -127)
	296	dx1 = -127;
	297	if (dy1 > 127)
	298	dy1 = 127;
	299	else if (dy1 < -127)
	300	dy1 = -127;
	301	b = 0x08 \| ((dx1 < 0) << 4) \| ((dy1 < 0) << 5) \| (s->mouse_buttons & 0x07);
	302	ps2_queue(&s->common, b);
	303	ps2_queue(&s->common, dx1 & 0xff);
	304	ps2_queue(&s->common, dy1 & 0xff);
	305	/* extra byte for IMPS/2 or IMEX */
	306	switch(s->mouse_type) {
	307	default:
	308	break;
	309	case 3:
	310	if (dz1 > 127)
	311	dz1 = 127;
	312	else if (dz1 < -127)
	313	dz1 = -127;
	314	ps2_queue(&s->common, dz1 & 0xff);
	315	break;
	316	case 4:
	317	if (dz1 > 7)
	318	dz1 = 7;
	319	else if (dz1 < -7)
	320	dz1 = -7;
	321	b = (dz1 & 0x0f) \| ((s->mouse_buttons & 0x18) << 1);
	322	ps2_queue(&s->common, b);
	323	break;
	324	}
	325
	326	/* update deltas */
	327	s->mouse_dx -= dx1;
	328	s->mouse_dy -= dy1;
	329	s->mouse_dz -= dz1;
	330	}
	331
5fafdf24	332	static void ps2_mouse_event(void *opaque,
0e43e99c FB	333	int dx, int dy, int dz, int buttons_state)
	334	{
	335	PS2MouseState *s = opaque;
	336
	337	/* check if deltas are recorded when disabled */
	338	if (!(s->mouse_status & MOUSE_STATUS_ENABLED))
	339	return;
	340
	341	s->mouse_dx += dx;
	342	s->mouse_dy -= dy;
	343	s->mouse_dz += dz;
	344	/* XXX: SDL sometimes generates nul events: we delete them */
	345	if (s->mouse_dx == 0 && s->mouse_dy == 0 && s->mouse_dz == 0 &&
	346	s->mouse_buttons == buttons_state)
	347	return;
	348	s->mouse_buttons = buttons_state;
3b46e624	349
0e43e99c FB	350	if (!(s->mouse_status & MOUSE_STATUS_REMOTE) &&
	351	(s->common.queue.count < (PS2_QUEUE_SIZE - 16))) {
	352	for(;;) {
	353	/* if not remote, send event. Multiple events are sent if
	354	too big deltas */
	355	ps2_mouse_send_packet(s);
	356	if (s->mouse_dx == 0 && s->mouse_dy == 0 && s->mouse_dz == 0)
	357	break;
	358	}
	359	}
	360	}
	361
548df2ac TS	362	void ps2_mouse_fake_event(void *opaque)
	363	{
	364	ps2_mouse_event(opaque, 1, 0, 0, 0);
	365	}
	366
0e43e99c FB	367	void ps2_write_mouse(void *opaque, int val)
	368	{
	369	PS2MouseState s = (PS2MouseState )opaque;
	370	#ifdef DEBUG_MOUSE
	371	printf("kbd: write mouse 0x%02x\n", val);
	372	#endif
	373	switch(s->common.write_cmd) {
	374	default:
	375	case -1:
	376	/* mouse command */
	377	if (s->mouse_wrap) {
	378	if (val == AUX_RESET_WRAP) {
	379	s->mouse_wrap = 0;
	380	ps2_queue(&s->common, AUX_ACK);
	381	return;
	382	} else if (val != AUX_RESET) {
	383	ps2_queue(&s->common, val);
	384	return;
	385	}
	386	}
	387	switch(val) {
	388	case AUX_SET_SCALE11:
	389	s->mouse_status &= ~MOUSE_STATUS_SCALE21;
	390	ps2_queue(&s->common, AUX_ACK);
	391	break;
	392	case AUX_SET_SCALE21:
	393	s->mouse_status \|= MOUSE_STATUS_SCALE21;
	394	ps2_queue(&s->common, AUX_ACK);
	395	break;
	396	case AUX_SET_STREAM:
	397	s->mouse_status &= ~MOUSE_STATUS_REMOTE;
	398	ps2_queue(&s->common, AUX_ACK);
	399	break;
	400	case AUX_SET_WRAP:
	401	s->mouse_wrap = 1;
	402	ps2_queue(&s->common, AUX_ACK);
	403	break;
	404	case AUX_SET_REMOTE:
	405	s->mouse_status \|= MOUSE_STATUS_REMOTE;
	406	ps2_queue(&s->common, AUX_ACK);
	407	break;
	408	case AUX_GET_TYPE:
	409	ps2_queue(&s->common, AUX_ACK);
	410	ps2_queue(&s->common, s->mouse_type);
	411	break;
	412	case AUX_SET_RES:
	413	case AUX_SET_SAMPLE:
	414	s->common.write_cmd = val;
	415	ps2_queue(&s->common, AUX_ACK);
	416	break;
	417	case AUX_GET_SCALE:
	418	ps2_queue(&s->common, AUX_ACK);
	419	ps2_queue(&s->common, s->mouse_status);
	420	ps2_queue(&s->common, s->mouse_resolution);
	421	ps2_queue(&s->common, s->mouse_sample_rate);
	422	break;
	423	case AUX_POLL:
	424	ps2_queue(&s->common, AUX_ACK);
	425	ps2_mouse_send_packet(s);
	426	break;
	427	case AUX_ENABLE_DEV:
	428	s->mouse_status \|= MOUSE_STATUS_ENABLED;
	429	ps2_queue(&s->common, AUX_ACK);
	430	break;
431	case AUX_DISABLE_DEV:
432	s->mouse_status &= ~MOUSE_STATUS_ENABLED;
433	ps2_queue(&s->common, AUX_ACK);
434	break;
435	case AUX_SET_DEFAULT:
436	s->mouse_sample_rate = 100;
437	s->mouse_resolution = 2;
438	s->mouse_status = 0;
439	ps2_queue(&s->common, AUX_ACK);
440	break;
441	case AUX_RESET:
442	s->mouse_sample_rate = 100;
443	s->mouse_resolution = 2;
444	s->mouse_status = 0;
445	s->mouse_type = 0;
446	ps2_queue(&s->common, AUX_ACK);
447	ps2_queue(&s->common, 0xaa);
448	ps2_queue(&s->common, s->mouse_type);
449	break;
450	default:
451	break;
452	}
453	break;
454	case AUX_SET_SAMPLE:
455	s->mouse_sample_rate = val;
456	/* detect IMPS/2 or IMEX */
457	switch(s->mouse_detect_state) {
458	default:
459	case 0:
460	if (val == 200)
461	s->mouse_detect_state = 1;
462	break;
463	case 1:
464	if (val == 100)
465	s->mouse_detect_state = 2;
466	else if (val == 200)
467	s->mouse_detect_state = 3;
468	else
469	s->mouse_detect_state = 0;
470	break;
471	case 2:
5fafdf24	472	if (val == 80)
0e43e99c FB	473	s->mouse_type = 3; /* IMPS/2 */
	474	s->mouse_detect_state = 0;
	475	break;
	476	case 3:
5fafdf24	477	if (val == 80)
0e43e99c FB	478	s->mouse_type = 4; /* IMEX */
	479	s->mouse_detect_state = 0;
	480	break;
	481	}
	482	ps2_queue(&s->common, AUX_ACK);
	483	s->common.write_cmd = -1;
	484	break;
	485	case AUX_SET_RES:
	486	s->mouse_resolution = val;
	487	ps2_queue(&s->common, AUX_ACK);
	488	s->common.write_cmd = -1;
	489	break;
	490	}
	491	}
	492
ef74679a	493	static void ps2_common_reset(PS2State *s)
0e43e99c	494	{
0e43e99c FB	495	PS2Queue *q;
	496	s->write_cmd = -1;
	497	q = &s->queue;
	498	q->rptr = 0;
	499	q->wptr = 0;
	500	q->count = 0;
deeccef3	501	s->update_irq(s->update_arg, 0);
0e43e99c FB	502	}
0e43e99c FB	503
ef74679a DS	504	static void ps2_kbd_reset(void *opaque)
	505	{
	506	PS2KbdState s = (PS2KbdState ) opaque;
	507
	508	ps2_common_reset(&s->common);
	509	s->scan_enabled = 0;
	510	s->translate = 0;
	511	s->scancode_set = 0;
	512	}
	513
	514	static void ps2_mouse_reset(void *opaque)
	515	{
	516	PS2MouseState s = (PS2MouseState ) opaque;
	517
	518	ps2_common_reset(&s->common);
	519	s->mouse_status = 0;
	520	s->mouse_resolution = 0;
	521	s->mouse_sample_rate = 0;
	522	s->mouse_wrap = 0;
	523	s->mouse_type = 0;
	524	s->mouse_detect_state = 0;
	525	s->mouse_dx = 0;
	526	s->mouse_dy = 0;
	527	s->mouse_dz = 0;
	528	s->mouse_buttons = 0;
	529	}
	530
b31442c3 JQ	531	static const VMStateDescription vmstate_ps2_common = {
	532	.name = "PS2 Common State",
	533	.version_id = 3,
	534	.minimum_version_id = 2,
	535	.minimum_version_id_old = 2,
	536	.fields = (VMStateField []) {
	537	VMSTATE_INT32(write_cmd, PS2State),
	538	VMSTATE_INT32(queue.rptr, PS2State),
	539	VMSTATE_INT32(queue.wptr, PS2State),
	540	VMSTATE_INT32(queue.count, PS2State),
	541	VMSTATE_BUFFER(queue.data, PS2State),
	542	VMSTATE_END_OF_LIST()
	543	}
	544	};
0e43e99c	545
db596c53	546	static int ps2_kbd_post_load(void* opaque, int version_id)
0e43e99c FB	547	{
0e43e99c FB	548	PS2KbdState s = (PS2KbdState)opaque;
7783e9f0	549
db596c53	550	if (version_id == 2)
e7d93956	551	s->scancode_set=2;
0e43e99c FB	552	return 0;
	553	}
	554
b31442c3 JQ	555	static const VMStateDescription vmstate_ps2_keyboard = {
	556	.name = "ps2kbd",
	557	.version_id = 3,
db596c53	558	.minimum_version_id = 2,
b31442c3	559	.minimum_version_id_old = 2,
db596c53	560	.post_load = ps2_kbd_post_load,
b31442c3 JQ	561	.fields = (VMStateField []) {
	562	VMSTATE_STRUCT(common, PS2KbdState, 0, vmstate_ps2_common, PS2State),
	563	VMSTATE_INT32(scan_enabled, PS2KbdState),
	564	VMSTATE_INT32(translate, PS2KbdState),
	565	VMSTATE_INT32_V(scancode_set, PS2KbdState,3),
	566	VMSTATE_END_OF_LIST()
	567	}
	568	};
7783e9f0	569
b31442c3 JQ	570	static const VMStateDescription vmstate_ps2_mouse = {
	571	.name = "ps2mouse",
	572	.version_id = 2,
	573	.minimum_version_id = 2,
	574	.minimum_version_id_old = 2,
	575	.fields = (VMStateField []) {
	576	VMSTATE_STRUCT(common, PS2MouseState, 0, vmstate_ps2_common, PS2State),
	577	VMSTATE_UINT8(mouse_status, PS2MouseState),
	578	VMSTATE_UINT8(mouse_resolution, PS2MouseState),
	579	VMSTATE_UINT8(mouse_sample_rate, PS2MouseState),
	580	VMSTATE_UINT8(mouse_wrap, PS2MouseState),
	581	VMSTATE_UINT8(mouse_type, PS2MouseState),
	582	VMSTATE_UINT8(mouse_detect_state, PS2MouseState),
	583	VMSTATE_INT32(mouse_dx, PS2MouseState),
	584	VMSTATE_INT32(mouse_dy, PS2MouseState),
	585	VMSTATE_INT32(mouse_dz, PS2MouseState),
	586	VMSTATE_UINT8(mouse_buttons, PS2MouseState),
	587	VMSTATE_END_OF_LIST()
	588	}
	589	};
0e43e99c FB	590
	591	void ps2_kbd_init(void (update_irq)(void , int), void update_arg)
	592	{
	593	PS2KbdState s = (PS2KbdState )qemu_mallocz(sizeof(PS2KbdState));
	594
	595	s->common.update_irq = update_irq;
	596	s->common.update_arg = update_arg;
e7d93956	597	s->scancode_set = 2;
0be71e32	598	vmstate_register(NULL, 0, &vmstate_ps2_keyboard, s);
0e43e99c	599	qemu_add_kbd_event_handler(ps2_put_keycode, s);
ef74679a	600	qemu_register_reset(ps2_kbd_reset, s);
0e43e99c FB	601	return s;
	602	}
	603
	604	void ps2_mouse_init(void (update_irq)(void , int), void update_arg)
	605	{
	606	PS2MouseState s = (PS2MouseState )qemu_mallocz(sizeof(PS2MouseState));
	607
	608	s->common.update_irq = update_irq;
	609	s->common.update_arg = update_arg;
0be71e32	610	vmstate_register(NULL, 0, &vmstate_ps2_mouse, s);
455204eb	611	qemu_add_mouse_event_handler(ps2_mouse_event, s, 0, "QEMU PS/2 Mouse");
ef74679a	612	qemu_register_reset(ps2_mouse_reset, s);
0e43e99c FB	613	return s;
0e43e99c FB	614	}