mirror of https://gitee.com/openkylin/qemu.git
281 lines
7.4 KiB
C
281 lines
7.4 KiB
C
/*
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* QEMU VMMouse emulation
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*
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* Copyright (C) 2007 Anthony Liguori <anthony@codemonkey.ws>
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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* THE SOFTWARE.
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*/
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#include "hw.h"
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#include "console.h"
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#include "ps2.h"
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#include "pc.h"
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/* debug only vmmouse */
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//#define DEBUG_VMMOUSE
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/* VMMouse Commands */
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#define VMMOUSE_GETVERSION 10
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#define VMMOUSE_DATA 39
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#define VMMOUSE_STATUS 40
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#define VMMOUSE_COMMAND 41
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#define VMMOUSE_READ_ID 0x45414552
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#define VMMOUSE_DISABLE 0x000000f5
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#define VMMOUSE_REQUEST_RELATIVE 0x4c455252
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#define VMMOUSE_REQUEST_ABSOLUTE 0x53424152
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#define VMMOUSE_QUEUE_SIZE 1024
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#define VMMOUSE_VERSION 0x3442554a
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#ifdef DEBUG_VMMOUSE
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#define DPRINTF(fmt, ...) printf(fmt, ## __VA_ARGS__)
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#else
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#define DPRINTF(fmt, ...) do { } while (0)
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#endif
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typedef struct _VMMouseState
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{
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uint32_t queue[VMMOUSE_QUEUE_SIZE];
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int32_t queue_size;
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uint16_t nb_queue;
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uint16_t status;
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uint8_t absolute;
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QEMUPutMouseEntry *entry;
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void *ps2_mouse;
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} VMMouseState;
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static uint32_t vmmouse_get_status(VMMouseState *s)
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{
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DPRINTF("vmmouse_get_status()\n");
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return (s->status << 16) | s->nb_queue;
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}
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static void vmmouse_mouse_event(void *opaque, int x, int y, int dz, int buttons_state)
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{
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VMMouseState *s = opaque;
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int buttons = 0;
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if (s->nb_queue > (VMMOUSE_QUEUE_SIZE - 4))
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return;
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DPRINTF("vmmouse_mouse_event(%d, %d, %d, %d)\n",
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x, y, dz, buttons_state);
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if ((buttons_state & MOUSE_EVENT_LBUTTON))
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buttons |= 0x20;
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if ((buttons_state & MOUSE_EVENT_RBUTTON))
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buttons |= 0x10;
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if ((buttons_state & MOUSE_EVENT_MBUTTON))
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buttons |= 0x08;
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if (s->absolute) {
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x <<= 1;
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y <<= 1;
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}
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s->queue[s->nb_queue++] = buttons;
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s->queue[s->nb_queue++] = x;
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s->queue[s->nb_queue++] = y;
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s->queue[s->nb_queue++] = dz;
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/* need to still generate PS2 events to notify driver to
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read from queue */
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i8042_isa_mouse_fake_event(s->ps2_mouse);
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}
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static void vmmouse_update_handler(VMMouseState *s)
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{
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if (s->entry) {
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qemu_remove_mouse_event_handler(s->entry);
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s->entry = NULL;
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}
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if (s->status == 0)
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s->entry = qemu_add_mouse_event_handler(vmmouse_mouse_event,
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s, s->absolute,
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"vmmouse");
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}
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static void vmmouse_read_id(VMMouseState *s)
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{
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DPRINTF("vmmouse_read_id()\n");
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if (s->nb_queue == VMMOUSE_QUEUE_SIZE)
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return;
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s->queue[s->nb_queue++] = VMMOUSE_VERSION;
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s->status = 0;
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vmmouse_update_handler(s);
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}
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static void vmmouse_request_relative(VMMouseState *s)
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{
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DPRINTF("vmmouse_request_relative()\n");
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s->absolute = 0;
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vmmouse_update_handler(s);
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}
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static void vmmouse_request_absolute(VMMouseState *s)
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{
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DPRINTF("vmmouse_request_absolute()\n");
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s->absolute = 1;
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vmmouse_update_handler(s);
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}
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static void vmmouse_disable(VMMouseState *s)
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{
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DPRINTF("vmmouse_disable()\n");
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s->status = 0xffff;
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vmmouse_update_handler(s);
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}
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static void vmmouse_data(VMMouseState *s, uint32_t *data, uint32_t size)
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{
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int i;
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DPRINTF("vmmouse_data(%d)\n", size);
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if (size == 0 || size > 6 || size > s->nb_queue) {
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printf("vmmouse: driver requested too much data %d\n", size);
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s->status = 0xffff;
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vmmouse_update_handler(s);
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return;
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}
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for (i = 0; i < size; i++)
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data[i] = s->queue[i];
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s->nb_queue -= size;
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if (s->nb_queue)
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memmove(s->queue, &s->queue[size], sizeof(s->queue[0]) * s->nb_queue);
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}
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static void vmmouse_get_data(uint32_t *data)
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{
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CPUState *env = cpu_single_env;
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data[0] = env->regs[R_EAX]; data[1] = env->regs[R_EBX];
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data[2] = env->regs[R_ECX]; data[3] = env->regs[R_EDX];
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data[4] = env->regs[R_ESI]; data[5] = env->regs[R_EDI];
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DPRINTF("get_data = {%x, %x, %x, %x, %x, %x}\n",
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data[0], data[1], data[2], data[3], data[4], data[5]);
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}
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static void vmmouse_set_data(const uint32_t *data)
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{
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CPUState *env = cpu_single_env;
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DPRINTF("set_data = {%x, %x, %x, %x, %x, %x}\n",
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data[0], data[1], data[2], data[3], data[4], data[5]);
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env->regs[R_EAX] = data[0]; env->regs[R_EBX] = data[1];
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env->regs[R_ECX] = data[2]; env->regs[R_EDX] = data[3];
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env->regs[R_ESI] = data[4]; env->regs[R_EDI] = data[5];
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}
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static uint32_t vmmouse_ioport_read(void *opaque, uint32_t addr)
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{
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VMMouseState *s = opaque;
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uint32_t data[6];
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uint16_t command;
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vmmouse_get_data(data);
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command = data[2] & 0xFFFF;
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switch (command) {
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case VMMOUSE_STATUS:
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data[0] = vmmouse_get_status(s);
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break;
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case VMMOUSE_COMMAND:
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switch (data[1]) {
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case VMMOUSE_DISABLE:
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vmmouse_disable(s);
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break;
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case VMMOUSE_READ_ID:
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vmmouse_read_id(s);
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break;
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case VMMOUSE_REQUEST_RELATIVE:
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vmmouse_request_relative(s);
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break;
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case VMMOUSE_REQUEST_ABSOLUTE:
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vmmouse_request_absolute(s);
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break;
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default:
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printf("vmmouse: unknown command %x\n", data[1]);
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break;
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}
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break;
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case VMMOUSE_DATA:
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vmmouse_data(s, data, data[1]);
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break;
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default:
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printf("vmmouse: unknown command %x\n", command);
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break;
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}
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vmmouse_set_data(data);
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return data[0];
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}
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static int vmmouse_post_load(void *opaque, int version_id)
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{
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VMMouseState *s = opaque;
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vmmouse_update_handler(s);
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return 0;
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}
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static const VMStateDescription vmstate_vmmouse = {
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.name = "vmmouse",
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.version_id = 0,
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.minimum_version_id = 0,
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.minimum_version_id_old = 0,
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.post_load = vmmouse_post_load,
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.fields = (VMStateField []) {
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VMSTATE_INT32_EQUAL(queue_size, VMMouseState),
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VMSTATE_UINT32_ARRAY(queue, VMMouseState, VMMOUSE_QUEUE_SIZE),
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VMSTATE_UINT16(nb_queue, VMMouseState),
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VMSTATE_UINT16(status, VMMouseState),
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VMSTATE_UINT8(absolute, VMMouseState),
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VMSTATE_END_OF_LIST()
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}
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};
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void *vmmouse_init(void *m)
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{
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VMMouseState *s = NULL;
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DPRINTF("vmmouse_init\n");
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s = qemu_mallocz(sizeof(VMMouseState));
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s->status = 0xffff;
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s->ps2_mouse = m;
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s->queue_size = VMMOUSE_QUEUE_SIZE;
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vmport_register(VMMOUSE_STATUS, vmmouse_ioport_read, s);
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vmport_register(VMMOUSE_COMMAND, vmmouse_ioport_read, s);
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vmport_register(VMMOUSE_DATA, vmmouse_ioport_read, s);
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vmstate_register(NULL, 0, &vmstate_vmmouse, s);
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return s;
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}
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