/* * QEMU VMMouse emulation * * Copyright (C) 2007 Anthony Liguori <anthony@codemonkey.ws> * * 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 "console.h"#include "ps2.h"#include "pc.h"/* debug only vmmouse *///#define DEBUG_VMMOUSE/* VMMouse Commands */#define VMMOUSE_GETVERSION	10#define VMMOUSE_DATA		39#define VMMOUSE_STATUS		40#define VMMOUSE_COMMAND		41#define VMMOUSE_READ_ID			0x45414552#define VMMOUSE_DISABLE			0x000000f5#define VMMOUSE_REQUEST_RELATIVE	0x4c455252#define VMMOUSE_REQUEST_ABSOLUTE	0x53424152#define VMMOUSE_QUEUE_SIZE	1024#define VMMOUSE_VERSION		0x3442554a#ifdef DEBUG_VMMOUSE#define DPRINTF(fmt, ...) printf(fmt, ## __VA_ARGS__)#else#define DPRINTF(fmt, ...) do { } while (0)#endiftypedef struct _VMMouseState{    uint32_t queue[VMMOUSE_QUEUE_SIZE];    uint16_t nb_queue;    uint16_t status;    uint8_t absolute;    QEMUPutMouseEntry *entry;    void *ps2_mouse;} VMMouseState;static uint32_t vmmouse_get_status(VMMouseState *s){    DPRINTF("vmmouse_get_status()\n");    return (s->status << 16) | s->nb_queue;}static void vmmouse_mouse_event(void *opaque, int x, int y, int dz, int buttons_state){    VMMouseState *s = opaque;    int buttons = 0;    if (s->nb_queue > (VMMOUSE_QUEUE_SIZE - 4))        return;    DPRINTF("vmmouse_mouse_event(%d, %d, %d, %d)\n",            x, y, dz, buttons_state);    if ((buttons_state & MOUSE_EVENT_LBUTTON))        buttons |= 0x20;    if ((buttons_state & MOUSE_EVENT_RBUTTON))        buttons |= 0x10;    if ((buttons_state & MOUSE_EVENT_MBUTTON))        buttons |= 0x08;    if (s->absolute) {        x <<= 1;        y <<= 1;    }    s->queue[s->nb_queue++] = buttons;    s->queue[s->nb_queue++] = x;    s->queue[s->nb_queue++] = y;    s->queue[s->nb_queue++] = dz;    /* need to still generate PS2 events to notify driver to       read from queue */    ps2_mouse_fake_event(s->ps2_mouse);}static void vmmouse_update_handler(VMMouseState *s){    if (s->entry) {        qemu_remove_mouse_event_handler(s->entry);        s->entry = NULL;    }    if (s->status == 0)        s->entry = qemu_add_mouse_event_handler(vmmouse_mouse_event,                                                s, s->absolute,                                                "vmmouse");}static void vmmouse_read_id(VMMouseState *s){    DPRINTF("vmmouse_read_id()\n");    if (s->nb_queue == VMMOUSE_QUEUE_SIZE)        return;    s->queue[s->nb_queue++] = VMMOUSE_VERSION;    s->status = 0;    vmmouse_update_handler(s);}static void vmmouse_request_relative(VMMouseState *s){    DPRINTF("vmmouse_request_relative()\n");    s->absolute = 0;    vmmouse_update_handler(s);}static void vmmouse_request_absolute(VMMouseState *s){    DPRINTF("vmmouse_request_absolute()\n");    s->absolute = 1;    vmmouse_update_handler(s);}static void vmmouse_disable(VMMouseState *s){    DPRINTF("vmmouse_disable()\n");    s->status = 0xffff;    vmmouse_update_handler(s);}static void vmmouse_data(VMMouseState *s, uint32_t *data, uint32_t size){    int i;    DPRINTF("vmmouse_data(%d)\n", size);    if (size == 0 || size > 6 || size > s->nb_queue) {        printf("vmmouse: driver requested too much data %d\n", size);        s->status = 0xffff;        vmmouse_update_handler(s);        return;    }    for (i = 0; i < size; i++)        data[i] = s->queue[i];    s->nb_queue -= size;    if (s->nb_queue)        memmove(s->queue, &s->queue[size], sizeof(s->queue[0]) * s->nb_queue);}static void vmmouse_get_data(uint32_t *data){    CPUState *env = cpu_single_env;    data[0] = env->regs[R_EAX]; data[1] = env->regs[R_EBX];    data[2] = env->regs[R_ECX]; data[3] = env->regs[R_EDX];    data[4] = env->regs[R_ESI]; data[5] = env->regs[R_EDI];    DPRINTF("get_data = {%x, %x, %x, %x, %x, %x}\n",            data[0], data[1], data[2], data[3], data[4], data[5]);}static void vmmouse_set_data(const uint32_t *data){    CPUState *env = cpu_single_env;    DPRINTF("set_data = {%x, %x, %x, %x, %x, %x}\n",            data[0], data[1], data[2], data[3], data[4], data[5]);    env->regs[R_EAX] = data[0]; env->regs[R_EBX] = data[1];    env->regs[R_ECX] = data[2]; env->regs[R_EDX] = data[3];    env->regs[R_ESI] = data[4]; env->regs[R_EDI] = data[5];}static uint32_t vmmouse_ioport_read(void *opaque, uint32_t addr){    VMMouseState *s = opaque;    uint32_t data[6];    uint16_t command;    vmmouse_get_data(data);    command = data[2] & 0xFFFF;    switch (command) {    case VMMOUSE_STATUS:        data[0] = vmmouse_get_status(s);        break;    case VMMOUSE_COMMAND:        switch (data[1]) {        case VMMOUSE_DISABLE:            vmmouse_disable(s);            break;        case VMMOUSE_READ_ID:            vmmouse_read_id(s);            break;        case VMMOUSE_REQUEST_RELATIVE:            vmmouse_request_relative(s);            break;        case VMMOUSE_REQUEST_ABSOLUTE:            vmmouse_request_absolute(s);            break;        default:            printf("vmmouse: unknown command %x\n", data[1]);            break;        }        break;    case VMMOUSE_DATA:        vmmouse_data(s, data, data[1]);        break;    default:        printf("vmmouse: unknown command %x\n", command);        break;    }    vmmouse_set_data(data);    return data[0];}static void vmmouse_save(QEMUFile *f, void *opaque){    VMMouseState *s = opaque;    int i;    qemu_put_be32(f, VMMOUSE_QUEUE_SIZE);    for (i = 0; i < VMMOUSE_QUEUE_SIZE; i++)        qemu_put_be32s(f, &s->queue[i]);    qemu_put_be16s(f, &s->nb_queue);    qemu_put_be16s(f, &s->status);    qemu_put_8s(f, &s->absolute);}static int vmmouse_load(QEMUFile *f, void *opaque, int version_id){    VMMouseState *s = opaque;    int i;    if (version_id != 0)        return -EINVAL;    if (qemu_get_be32(f) != VMMOUSE_QUEUE_SIZE)        return -EINVAL;    for (i = 0; i < VMMOUSE_QUEUE_SIZE; i++)        qemu_get_be32s(f, &s->queue[i]);    qemu_get_be16s(f, &s->nb_queue);    qemu_get_be16s(f, &s->status);    qemu_get_8s(f, &s->absolute);    vmmouse_update_handler(s);    return 0;}void *vmmouse_init(void *m){    VMMouseState *s = NULL;    DPRINTF("vmmouse_init\n");    s = qemu_mallocz(sizeof(VMMouseState));    if (!s)        return NULL;    s->status = 0xffff;    s->ps2_mouse = m;    vmport_register(VMMOUSE_STATUS, vmmouse_ioport_read, s);    vmport_register(VMMOUSE_COMMAND, vmmouse_ioport_read, s);    vmport_register(VMMOUSE_DATA, vmmouse_ioport_read, s);    register_savevm("vmmouse", 0, 0, vmmouse_save, vmmouse_load, s);    return s;}