/* * 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 "qemu/osdep.h" #include "qapi/error.h" #include "ui/console.h" #include "hw/i386/vmport.h" #include "hw/input/i8042.h" #include "hw/qdev-properties.h" #include "migration/vmstate.h" #include "cpu.h" #include "qom/object.h" /* debug only vmmouse */ //#define DEBUG_VMMOUSE #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) #endif #define TYPE_VMMOUSE "vmmouse" OBJECT_DECLARE_SIMPLE_TYPE(VMMouseState, VMMOUSE) struct VMMouseState { ISADevice parent_obj; uint32_t queue[VMMOUSE_QUEUE_SIZE]; int32_t queue_size; uint16_t nb_queue; uint16_t status; uint8_t absolute; QEMUPutMouseEntry *entry; ISAKBDState *i8042; }; static void vmmouse_get_data(uint32_t *data) { X86CPU *cpu = X86_CPU(current_cpu); CPUX86State *env = &cpu->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]; } static void vmmouse_set_data(const uint32_t *data) { X86CPU *cpu = X86_CPU(current_cpu); CPUX86State *env = &cpu->env; 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_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 */ i8042_isa_mouse_fake_event(s->i8042); } static void vmmouse_remove_handler(VMMouseState *s) { if (s->entry) { qemu_remove_mouse_event_handler(s->entry); s->entry = NULL; } } static void vmmouse_update_handler(VMMouseState *s, int absolute) { if (s->status != 0) { return; } if (s->absolute != absolute) { s->absolute = absolute; vmmouse_remove_handler(s); } if (s->entry == NULL) { s->entry = qemu_add_mouse_event_handler(vmmouse_mouse_event, s, s->absolute, "vmmouse"); qemu_activate_mouse_event_handler(s->entry); } } 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; } static void vmmouse_request_relative(VMMouseState *s) { DPRINTF("vmmouse_request_relative()\n"); vmmouse_update_handler(s, 0); } static void vmmouse_request_absolute(VMMouseState *s) { DPRINTF("vmmouse_request_absolute()\n"); vmmouse_update_handler(s, 1); } static void vmmouse_disable(VMMouseState *s) { DPRINTF("vmmouse_disable()\n"); s->status = 0xffff; vmmouse_remove_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_remove_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 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 VMPORT_CMD_VMMOUSE_STATUS: data[0] = vmmouse_get_status(s); break; case VMPORT_CMD_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 VMPORT_CMD_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 int vmmouse_post_load(void *opaque, int version_id) { VMMouseState *s = opaque; vmmouse_remove_handler(s); vmmouse_update_handler(s, s->absolute); return 0; } static const VMStateDescription vmstate_vmmouse = { .name = "vmmouse", .version_id = 0, .minimum_version_id = 0, .post_load = vmmouse_post_load, .fields = (VMStateField[]) { VMSTATE_INT32_EQUAL(queue_size, VMMouseState, NULL), VMSTATE_UINT32_ARRAY(queue, VMMouseState, VMMOUSE_QUEUE_SIZE), VMSTATE_UINT16(nb_queue, VMMouseState), VMSTATE_UINT16(status, VMMouseState), VMSTATE_UINT8(absolute, VMMouseState), VMSTATE_END_OF_LIST() } }; static void vmmouse_reset(DeviceState *d) { VMMouseState *s = VMMOUSE(d); s->queue_size = VMMOUSE_QUEUE_SIZE; s->nb_queue = 0; vmmouse_disable(s); } static void vmmouse_realizefn(DeviceState *dev, Error **errp) { VMMouseState *s = VMMOUSE(dev); DPRINTF("vmmouse_init\n"); if (!object_resolve_path_type("", TYPE_VMPORT, NULL)) { error_setg(errp, "vmmouse needs a machine with vmport"); return; } vmport_register(VMPORT_CMD_VMMOUSE_STATUS, vmmouse_ioport_read, s); vmport_register(VMPORT_CMD_VMMOUSE_COMMAND, vmmouse_ioport_read, s); vmport_register(VMPORT_CMD_VMMOUSE_DATA, vmmouse_ioport_read, s); } static Property vmmouse_properties[] = { DEFINE_PROP_LINK("i8042", VMMouseState, i8042, TYPE_I8042, ISAKBDState *), DEFINE_PROP_END_OF_LIST(), }; static void vmmouse_class_initfn(ObjectClass *klass, void *data) { DeviceClass *dc = DEVICE_CLASS(klass); dc->realize = vmmouse_realizefn; dc->reset = vmmouse_reset; dc->vmsd = &vmstate_vmmouse; device_class_set_props(dc, vmmouse_properties); set_bit(DEVICE_CATEGORY_INPUT, dc->categories); } static const TypeInfo vmmouse_info = { .name = TYPE_VMMOUSE, .parent = TYPE_ISA_DEVICE, .instance_size = sizeof(VMMouseState), .class_init = vmmouse_class_initfn, }; static void vmmouse_register_types(void) { type_register_static(&vmmouse_info); } type_init(vmmouse_register_types)