meson: convert qapi-specific to meson
[qemu.git] / hw / input / adb-mouse.c
1 /*
2 * QEMU ADB mouse support
3 *
4 * Copyright (c) 2004 Fabrice Bellard
5 *
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:
12 *
13 * The above copyright notice and this permission notice shall be included in
14 * all copies or substantial portions of the Software.
15 *
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
22 * THE SOFTWARE.
23 */
24
25 #include "qemu/osdep.h"
26 #include "ui/console.h"
27 #include "hw/input/adb.h"
28 #include "migration/vmstate.h"
29 #include "qemu/module.h"
30 #include "adb-internal.h"
31 #include "trace.h"
32
33 #define ADB_MOUSE(obj) OBJECT_CHECK(MouseState, (obj), TYPE_ADB_MOUSE)
34
35 typedef struct MouseState {
36 /*< public >*/
37 ADBDevice parent_obj;
38 /*< private >*/
39
40 int buttons_state, last_buttons_state;
41 int dx, dy, dz;
42 } MouseState;
43
44 #define ADB_MOUSE_CLASS(class) \
45 OBJECT_CLASS_CHECK(ADBMouseClass, (class), TYPE_ADB_MOUSE)
46 #define ADB_MOUSE_GET_CLASS(obj) \
47 OBJECT_GET_CLASS(ADBMouseClass, (obj), TYPE_ADB_MOUSE)
48
49 typedef struct ADBMouseClass {
50 /*< public >*/
51 ADBDeviceClass parent_class;
52 /*< private >*/
53
54 DeviceRealize parent_realize;
55 } ADBMouseClass;
56
57 static void adb_mouse_event(void *opaque,
58 int dx1, int dy1, int dz1, int buttons_state)
59 {
60 MouseState *s = opaque;
61
62 s->dx += dx1;
63 s->dy += dy1;
64 s->dz += dz1;
65 s->buttons_state = buttons_state;
66 }
67
68
69 static int adb_mouse_poll(ADBDevice *d, uint8_t *obuf)
70 {
71 MouseState *s = ADB_MOUSE(d);
72 int dx, dy;
73
74 if (s->last_buttons_state == s->buttons_state &&
75 s->dx == 0 && s->dy == 0) {
76 return 0;
77 }
78
79 dx = s->dx;
80 if (dx < -63) {
81 dx = -63;
82 } else if (dx > 63) {
83 dx = 63;
84 }
85
86 dy = s->dy;
87 if (dy < -63) {
88 dy = -63;
89 } else if (dy > 63) {
90 dy = 63;
91 }
92
93 s->dx -= dx;
94 s->dy -= dy;
95 s->last_buttons_state = s->buttons_state;
96
97 dx &= 0x7f;
98 dy &= 0x7f;
99
100 if (!(s->buttons_state & MOUSE_EVENT_LBUTTON)) {
101 dy |= 0x80;
102 }
103 if (!(s->buttons_state & MOUSE_EVENT_RBUTTON)) {
104 dx |= 0x80;
105 }
106
107 obuf[0] = dy;
108 obuf[1] = dx;
109 return 2;
110 }
111
112 static int adb_mouse_request(ADBDevice *d, uint8_t *obuf,
113 const uint8_t *buf, int len)
114 {
115 MouseState *s = ADB_MOUSE(d);
116 int cmd, reg, olen;
117
118 if ((buf[0] & 0x0f) == ADB_FLUSH) {
119 /* flush mouse fifo */
120 s->buttons_state = s->last_buttons_state;
121 s->dx = 0;
122 s->dy = 0;
123 s->dz = 0;
124 trace_adb_device_mouse_flush();
125 return 0;
126 }
127
128 cmd = buf[0] & 0xc;
129 reg = buf[0] & 0x3;
130 olen = 0;
131 switch (cmd) {
132 case ADB_WRITEREG:
133 trace_adb_device_mouse_writereg(reg, buf[1]);
134 switch (reg) {
135 case 2:
136 break;
137 case 3:
138 /*
139 * MacOS 9 has a bug in its ADB driver whereby after configuring
140 * the ADB bus devices it sends another write of invalid length
141 * to reg 3. Make sure we ignore it to prevent an address clash
142 * with the previous device.
143 */
144 if (len != 3) {
145 return 0;
146 }
147
148 switch (buf[2]) {
149 case ADB_CMD_SELF_TEST:
150 break;
151 case ADB_CMD_CHANGE_ID:
152 case ADB_CMD_CHANGE_ID_AND_ACT:
153 case ADB_CMD_CHANGE_ID_AND_ENABLE:
154 d->devaddr = buf[1] & 0xf;
155 trace_adb_device_mouse_request_change_addr(d->devaddr);
156 break;
157 default:
158 d->devaddr = buf[1] & 0xf;
159 /*
160 * we support handlers:
161 * 0x01: Classic Apple Mouse Protocol / 100 cpi operations
162 * 0x02: Classic Apple Mouse Protocol / 200 cpi operations
163 * we don't support handlers (at least):
164 * 0x03: Mouse systems A3 trackball
165 * 0x04: Extended Apple Mouse Protocol
166 * 0x2f: Microspeed mouse
167 * 0x42: Macally
168 * 0x5f: Microspeed mouse
169 * 0x66: Microspeed mouse
170 */
171 if (buf[2] == 1 || buf[2] == 2) {
172 d->handler = buf[2];
173 }
174
175 trace_adb_device_mouse_request_change_addr_and_handler(
176 d->devaddr, d->handler);
177 break;
178 }
179 }
180 break;
181 case ADB_READREG:
182 switch (reg) {
183 case 0:
184 olen = adb_mouse_poll(d, obuf);
185 break;
186 case 1:
187 break;
188 case 3:
189 obuf[0] = d->devaddr;
190 obuf[1] = d->handler;
191 olen = 2;
192 break;
193 }
194 trace_adb_device_mouse_readreg(reg, obuf[0], obuf[1]);
195 break;
196 }
197 return olen;
198 }
199
200 static bool adb_mouse_has_data(ADBDevice *d)
201 {
202 MouseState *s = ADB_MOUSE(d);
203
204 return !(s->last_buttons_state == s->buttons_state &&
205 s->dx == 0 && s->dy == 0);
206 }
207
208 static void adb_mouse_reset(DeviceState *dev)
209 {
210 ADBDevice *d = ADB_DEVICE(dev);
211 MouseState *s = ADB_MOUSE(dev);
212
213 d->handler = 2;
214 d->devaddr = ADB_DEVID_MOUSE;
215 s->last_buttons_state = s->buttons_state = 0;
216 s->dx = s->dy = s->dz = 0;
217 }
218
219 static const VMStateDescription vmstate_adb_mouse = {
220 .name = "adb_mouse",
221 .version_id = 2,
222 .minimum_version_id = 2,
223 .fields = (VMStateField[]) {
224 VMSTATE_STRUCT(parent_obj, MouseState, 0, vmstate_adb_device,
225 ADBDevice),
226 VMSTATE_INT32(buttons_state, MouseState),
227 VMSTATE_INT32(last_buttons_state, MouseState),
228 VMSTATE_INT32(dx, MouseState),
229 VMSTATE_INT32(dy, MouseState),
230 VMSTATE_INT32(dz, MouseState),
231 VMSTATE_END_OF_LIST()
232 }
233 };
234
235 static void adb_mouse_realizefn(DeviceState *dev, Error **errp)
236 {
237 MouseState *s = ADB_MOUSE(dev);
238 ADBMouseClass *amc = ADB_MOUSE_GET_CLASS(dev);
239
240 amc->parent_realize(dev, errp);
241
242 qemu_add_mouse_event_handler(adb_mouse_event, s, 0, "QEMU ADB Mouse");
243 }
244
245 static void adb_mouse_initfn(Object *obj)
246 {
247 ADBDevice *d = ADB_DEVICE(obj);
248
249 d->devaddr = ADB_DEVID_MOUSE;
250 }
251
252 static void adb_mouse_class_init(ObjectClass *oc, void *data)
253 {
254 DeviceClass *dc = DEVICE_CLASS(oc);
255 ADBDeviceClass *adc = ADB_DEVICE_CLASS(oc);
256 ADBMouseClass *amc = ADB_MOUSE_CLASS(oc);
257
258 device_class_set_parent_realize(dc, adb_mouse_realizefn,
259 &amc->parent_realize);
260 set_bit(DEVICE_CATEGORY_INPUT, dc->categories);
261
262 adc->devreq = adb_mouse_request;
263 adc->devhasdata = adb_mouse_has_data;
264 dc->reset = adb_mouse_reset;
265 dc->vmsd = &vmstate_adb_mouse;
266 }
267
268 static const TypeInfo adb_mouse_type_info = {
269 .name = TYPE_ADB_MOUSE,
270 .parent = TYPE_ADB_DEVICE,
271 .instance_size = sizeof(MouseState),
272 .instance_init = adb_mouse_initfn,
273 .class_init = adb_mouse_class_init,
274 .class_size = sizeof(ADBMouseClass),
275 };
276
277 static void adb_mouse_register_types(void)
278 {
279 type_register_static(&adb_mouse_type_info);
280 }
281
282 type_init(adb_mouse_register_types)