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25#include "qemu/osdep.h"
26#include "qapi/error.h"
27#include "ui/console.h"
28#include "hw/i386/vmport.h"
29#include "hw/input/i8042.h"
30#include "hw/qdev-properties.h"
31#include "migration/vmstate.h"
32#include "cpu.h"
33#include "qom/object.h"
34
35
36
37
38#define VMMOUSE_READ_ID 0x45414552
39#define VMMOUSE_DISABLE 0x000000f5
40#define VMMOUSE_REQUEST_RELATIVE 0x4c455252
41#define VMMOUSE_REQUEST_ABSOLUTE 0x53424152
42
43#define VMMOUSE_QUEUE_SIZE 1024
44
45#define VMMOUSE_VERSION 0x3442554a
46
47#ifdef DEBUG_VMMOUSE
48#define DPRINTF(fmt, ...) printf(fmt, ## __VA_ARGS__)
49#else
50#define DPRINTF(fmt, ...) do { } while (0)
51#endif
52
53#define TYPE_VMMOUSE "vmmouse"
54OBJECT_DECLARE_SIMPLE_TYPE(VMMouseState, VMMOUSE)
55
56struct VMMouseState {
57 ISADevice parent_obj;
58
59 uint32_t queue[VMMOUSE_QUEUE_SIZE];
60 int32_t queue_size;
61 uint16_t nb_queue;
62 uint16_t status;
63 uint8_t absolute;
64 QEMUPutMouseEntry *entry;
65 ISAKBDState *i8042;
66};
67
68static void vmmouse_get_data(uint32_t *data)
69{
70 X86CPU *cpu = X86_CPU(current_cpu);
71 CPUX86State *env = &cpu->env;
72
73 data[0] = env->regs[R_EAX]; data[1] = env->regs[R_EBX];
74 data[2] = env->regs[R_ECX]; data[3] = env->regs[R_EDX];
75 data[4] = env->regs[R_ESI]; data[5] = env->regs[R_EDI];
76}
77
78static void vmmouse_set_data(const uint32_t *data)
79{
80 X86CPU *cpu = X86_CPU(current_cpu);
81 CPUX86State *env = &cpu->env;
82
83 env->regs[R_EAX] = data[0]; env->regs[R_EBX] = data[1];
84 env->regs[R_ECX] = data[2]; env->regs[R_EDX] = data[3];
85 env->regs[R_ESI] = data[4]; env->regs[R_EDI] = data[5];
86}
87
88static uint32_t vmmouse_get_status(VMMouseState *s)
89{
90 DPRINTF("vmmouse_get_status()\n");
91 return (s->status << 16) | s->nb_queue;
92}
93
94static void vmmouse_mouse_event(void *opaque, int x, int y, int dz, int buttons_state)
95{
96 VMMouseState *s = opaque;
97 int buttons = 0;
98
99 if (s->nb_queue > (VMMOUSE_QUEUE_SIZE - 4))
100 return;
101
102 DPRINTF("vmmouse_mouse_event(%d, %d, %d, %d)\n",
103 x, y, dz, buttons_state);
104
105 if ((buttons_state & MOUSE_EVENT_LBUTTON))
106 buttons |= 0x20;
107 if ((buttons_state & MOUSE_EVENT_RBUTTON))
108 buttons |= 0x10;
109 if ((buttons_state & MOUSE_EVENT_MBUTTON))
110 buttons |= 0x08;
111
112 if (s->absolute) {
113 x <<= 1;
114 y <<= 1;
115 }
116
117 s->queue[s->nb_queue++] = buttons;
118 s->queue[s->nb_queue++] = x;
119 s->queue[s->nb_queue++] = y;
120 s->queue[s->nb_queue++] = dz;
121
122
123
124 i8042_isa_mouse_fake_event(s->i8042);
125}
126
127static void vmmouse_remove_handler(VMMouseState *s)
128{
129 if (s->entry) {
130 qemu_remove_mouse_event_handler(s->entry);
131 s->entry = NULL;
132 }
133}
134
135static void vmmouse_update_handler(VMMouseState *s, int absolute)
136{
137 if (s->status != 0) {
138 return;
139 }
140 if (s->absolute != absolute) {
141 s->absolute = absolute;
142 vmmouse_remove_handler(s);
143 }
144 if (s->entry == NULL) {
145 s->entry = qemu_add_mouse_event_handler(vmmouse_mouse_event,
146 s, s->absolute,
147 "vmmouse");
148 qemu_activate_mouse_event_handler(s->entry);
149 }
150}
151
152static void vmmouse_read_id(VMMouseState *s)
153{
154 DPRINTF("vmmouse_read_id()\n");
155
156 if (s->nb_queue == VMMOUSE_QUEUE_SIZE)
157 return;
158
159 s->queue[s->nb_queue++] = VMMOUSE_VERSION;
160 s->status = 0;
161}
162
163static void vmmouse_request_relative(VMMouseState *s)
164{
165 DPRINTF("vmmouse_request_relative()\n");
166 vmmouse_update_handler(s, 0);
167}
168
169static void vmmouse_request_absolute(VMMouseState *s)
170{
171 DPRINTF("vmmouse_request_absolute()\n");
172 vmmouse_update_handler(s, 1);
173}
174
175static void vmmouse_disable(VMMouseState *s)
176{
177 DPRINTF("vmmouse_disable()\n");
178 s->status = 0xffff;
179 vmmouse_remove_handler(s);
180}
181
182static void vmmouse_data(VMMouseState *s, uint32_t *data, uint32_t size)
183{
184 int i;
185
186 DPRINTF("vmmouse_data(%d)\n", size);
187
188 if (size == 0 || size > 6 || size > s->nb_queue) {
189 printf("vmmouse: driver requested too much data %d\n", size);
190 s->status = 0xffff;
191 vmmouse_remove_handler(s);
192 return;
193 }
194
195 for (i = 0; i < size; i++)
196 data[i] = s->queue[i];
197
198 s->nb_queue -= size;
199 if (s->nb_queue)
200 memmove(s->queue, &s->queue[size], sizeof(s->queue[0]) * s->nb_queue);
201}
202
203static uint32_t vmmouse_ioport_read(void *opaque, uint32_t addr)
204{
205 VMMouseState *s = opaque;
206 uint32_t data[6];
207 uint16_t command;
208
209 vmmouse_get_data(data);
210
211 command = data[2] & 0xFFFF;
212
213 switch (command) {
214 case VMPORT_CMD_VMMOUSE_STATUS:
215 data[0] = vmmouse_get_status(s);
216 break;
217 case VMPORT_CMD_VMMOUSE_COMMAND:
218 switch (data[1]) {
219 case VMMOUSE_DISABLE:
220 vmmouse_disable(s);
221 break;
222 case VMMOUSE_READ_ID:
223 vmmouse_read_id(s);
224 break;
225 case VMMOUSE_REQUEST_RELATIVE:
226 vmmouse_request_relative(s);
227 break;
228 case VMMOUSE_REQUEST_ABSOLUTE:
229 vmmouse_request_absolute(s);
230 break;
231 default:
232 printf("vmmouse: unknown command %x\n", data[1]);
233 break;
234 }
235 break;
236 case VMPORT_CMD_VMMOUSE_DATA:
237 vmmouse_data(s, data, data[1]);
238 break;
239 default:
240 printf("vmmouse: unknown command %x\n", command);
241 break;
242 }
243
244 vmmouse_set_data(data);
245 return data[0];
246}
247
248static int vmmouse_post_load(void *opaque, int version_id)
249{
250 VMMouseState *s = opaque;
251
252 vmmouse_remove_handler(s);
253 vmmouse_update_handler(s, s->absolute);
254 return 0;
255}
256
257static const VMStateDescription vmstate_vmmouse = {
258 .name = "vmmouse",
259 .version_id = 0,
260 .minimum_version_id = 0,
261 .post_load = vmmouse_post_load,
262 .fields = (VMStateField[]) {
263 VMSTATE_INT32_EQUAL(queue_size, VMMouseState, NULL),
264 VMSTATE_UINT32_ARRAY(queue, VMMouseState, VMMOUSE_QUEUE_SIZE),
265 VMSTATE_UINT16(nb_queue, VMMouseState),
266 VMSTATE_UINT16(status, VMMouseState),
267 VMSTATE_UINT8(absolute, VMMouseState),
268 VMSTATE_END_OF_LIST()
269 }
270};
271
272static void vmmouse_reset(DeviceState *d)
273{
274 VMMouseState *s = VMMOUSE(d);
275
276 s->queue_size = VMMOUSE_QUEUE_SIZE;
277 s->nb_queue = 0;
278
279 vmmouse_disable(s);
280}
281
282static void vmmouse_realizefn(DeviceState *dev, Error **errp)
283{
284 VMMouseState *s = VMMOUSE(dev);
285
286 DPRINTF("vmmouse_init\n");
287
288 if (!object_resolve_path_type("", TYPE_VMPORT, NULL)) {
289 error_setg(errp, "vmmouse needs a machine with vmport");
290 return;
291 }
292
293 vmport_register(VMPORT_CMD_VMMOUSE_STATUS, vmmouse_ioport_read, s);
294 vmport_register(VMPORT_CMD_VMMOUSE_COMMAND, vmmouse_ioport_read, s);
295 vmport_register(VMPORT_CMD_VMMOUSE_DATA, vmmouse_ioport_read, s);
296}
297
298static Property vmmouse_properties[] = {
299 DEFINE_PROP_LINK("i8042", VMMouseState, i8042, TYPE_I8042, ISAKBDState *),
300 DEFINE_PROP_END_OF_LIST(),
301};
302
303static void vmmouse_class_initfn(ObjectClass *klass, void *data)
304{
305 DeviceClass *dc = DEVICE_CLASS(klass);
306
307 dc->realize = vmmouse_realizefn;
308 dc->reset = vmmouse_reset;
309 dc->vmsd = &vmstate_vmmouse;
310 device_class_set_props(dc, vmmouse_properties);
311 set_bit(DEVICE_CATEGORY_INPUT, dc->categories);
312}
313
314static const TypeInfo vmmouse_info = {
315 .name = TYPE_VMMOUSE,
316 .parent = TYPE_ISA_DEVICE,
317 .instance_size = sizeof(VMMouseState),
318 .class_init = vmmouse_class_initfn,
319};
320
321static void vmmouse_register_types(void)
322{
323 type_register_static(&vmmouse_info);
324}
325
326type_init(vmmouse_register_types)
327
