2
* QEMU VMMouse emulation
4
* Copyright (C) 2007 Anthony Liguori <anthony@codemonkey.ws>
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:
13
* The above copyright notice and this permission notice shall be included in
14
* all copies or substantial portions of the Software.
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
30
/* debug only vmmouse */
31
//#define DEBUG_VMMOUSE
33
/* VMMouse Commands */
34
#define VMMOUSE_GETVERSION 10
35
#define VMMOUSE_DATA 39
36
#define VMMOUSE_STATUS 40
37
#define VMMOUSE_COMMAND 41
39
#define VMMOUSE_READ_ID 0x45414552
40
#define VMMOUSE_DISABLE 0x000000f5
41
#define VMMOUSE_REQUEST_RELATIVE 0x4c455252
42
#define VMMOUSE_REQUEST_ABSOLUTE 0x53424152
44
#define VMMOUSE_QUEUE_SIZE 1024
46
#define VMMOUSE_VERSION 0x3442554a
49
#define DPRINTF(fmt, ...) printf(fmt, ## __VA_ARGS__)
51
#define DPRINTF(fmt, ...) do { } while (0)
54
typedef struct _VMMouseState
57
uint32_t queue[VMMOUSE_QUEUE_SIZE];
62
QEMUPutMouseEntry *entry;
66
static uint32_t vmmouse_get_status(VMMouseState *s)
68
DPRINTF("vmmouse_get_status()\n");
69
return (s->status << 16) | s->nb_queue;
72
static void vmmouse_mouse_event(void *opaque, int x, int y, int dz, int buttons_state)
74
VMMouseState *s = opaque;
77
if (s->nb_queue > (VMMOUSE_QUEUE_SIZE - 4))
80
DPRINTF("vmmouse_mouse_event(%d, %d, %d, %d)\n",
81
x, y, dz, buttons_state);
83
if ((buttons_state & MOUSE_EVENT_LBUTTON))
85
if ((buttons_state & MOUSE_EVENT_RBUTTON))
87
if ((buttons_state & MOUSE_EVENT_MBUTTON))
95
s->queue[s->nb_queue++] = buttons;
96
s->queue[s->nb_queue++] = x;
97
s->queue[s->nb_queue++] = y;
98
s->queue[s->nb_queue++] = dz;
100
/* need to still generate PS2 events to notify driver to
102
i8042_isa_mouse_fake_event(s->ps2_mouse);
105
static void vmmouse_remove_handler(VMMouseState *s)
108
qemu_remove_mouse_event_handler(s->entry);
113
static void vmmouse_update_handler(VMMouseState *s, int absolute)
115
if (s->status != 0) {
118
if (s->absolute != absolute) {
119
s->absolute = absolute;
120
vmmouse_remove_handler(s);
122
if (s->entry == NULL) {
123
s->entry = qemu_add_mouse_event_handler(vmmouse_mouse_event,
126
qemu_activate_mouse_event_handler(s->entry);
130
static void vmmouse_read_id(VMMouseState *s)
132
DPRINTF("vmmouse_read_id()\n");
134
if (s->nb_queue == VMMOUSE_QUEUE_SIZE)
137
s->queue[s->nb_queue++] = VMMOUSE_VERSION;
141
static void vmmouse_request_relative(VMMouseState *s)
143
DPRINTF("vmmouse_request_relative()\n");
144
vmmouse_update_handler(s, 0);
147
static void vmmouse_request_absolute(VMMouseState *s)
149
DPRINTF("vmmouse_request_absolute()\n");
150
vmmouse_update_handler(s, 1);
153
static void vmmouse_disable(VMMouseState *s)
155
DPRINTF("vmmouse_disable()\n");
157
vmmouse_remove_handler(s);
160
static void vmmouse_data(VMMouseState *s, uint32_t *data, uint32_t size)
164
DPRINTF("vmmouse_data(%d)\n", size);
166
if (size == 0 || size > 6 || size > s->nb_queue) {
167
printf("vmmouse: driver requested too much data %d\n", size);
169
vmmouse_remove_handler(s);
173
for (i = 0; i < size; i++)
174
data[i] = s->queue[i];
178
memmove(s->queue, &s->queue[size], sizeof(s->queue[0]) * s->nb_queue);
181
static uint32_t vmmouse_ioport_read(void *opaque, uint32_t addr)
183
VMMouseState *s = opaque;
187
vmmouse_get_data(data);
189
command = data[2] & 0xFFFF;
193
data[0] = vmmouse_get_status(s);
195
case VMMOUSE_COMMAND:
197
case VMMOUSE_DISABLE:
200
case VMMOUSE_READ_ID:
203
case VMMOUSE_REQUEST_RELATIVE:
204
vmmouse_request_relative(s);
206
case VMMOUSE_REQUEST_ABSOLUTE:
207
vmmouse_request_absolute(s);
210
printf("vmmouse: unknown command %x\n", data[1]);
215
vmmouse_data(s, data, data[1]);
218
printf("vmmouse: unknown command %x\n", command);
222
vmmouse_set_data(data);
226
static int vmmouse_post_load(void *opaque, int version_id)
228
VMMouseState *s = opaque;
230
vmmouse_remove_handler(s);
231
vmmouse_update_handler(s, s->absolute);
235
static const VMStateDescription vmstate_vmmouse = {
238
.minimum_version_id = 0,
239
.minimum_version_id_old = 0,
240
.post_load = vmmouse_post_load,
241
.fields = (VMStateField []) {
242
VMSTATE_INT32_EQUAL(queue_size, VMMouseState),
243
VMSTATE_UINT32_ARRAY(queue, VMMouseState, VMMOUSE_QUEUE_SIZE),
244
VMSTATE_UINT16(nb_queue, VMMouseState),
245
VMSTATE_UINT16(status, VMMouseState),
246
VMSTATE_UINT8(absolute, VMMouseState),
247
VMSTATE_END_OF_LIST()
251
static void vmmouse_reset(DeviceState *d)
253
VMMouseState *s = container_of(d, VMMouseState, dev.qdev);
256
s->queue_size = VMMOUSE_QUEUE_SIZE;
259
static int vmmouse_initfn(ISADevice *dev)
261
VMMouseState *s = DO_UPCAST(VMMouseState, dev, dev);
263
DPRINTF("vmmouse_init\n");
265
vmport_register(VMMOUSE_STATUS, vmmouse_ioport_read, s);
266
vmport_register(VMMOUSE_COMMAND, vmmouse_ioport_read, s);
267
vmport_register(VMMOUSE_DATA, vmmouse_ioport_read, s);
272
static ISADeviceInfo vmmouse_info = {
273
.init = vmmouse_initfn,
274
.qdev.name = "vmmouse",
275
.qdev.size = sizeof(VMMouseState),
276
.qdev.vmsd = &vmstate_vmmouse,
278
.qdev.reset = vmmouse_reset,
279
.qdev.props = (Property[]) {
280
DEFINE_PROP_PTR("ps2_mouse", VMMouseState, ps2_mouse),
281
DEFINE_PROP_END_OF_LIST(),
285
static void vmmouse_dev_register(void)
287
isa_qdev_register(&vmmouse_info);
289
device_init(vmmouse_dev_register)