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_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_mouse_writereg(reg, buf[1]); |
134 | switch (reg) { |
135 | case 2: |
136 | break; |
137 | case 3: |
138 | switch (buf[2]) { |
139 | case ADB_CMD_SELF_TEST: |
140 | break; |
141 | case ADB_CMD_CHANGE_ID: |
142 | case ADB_CMD_CHANGE_ID_AND_ACT: |
143 | case ADB_CMD_CHANGE_ID_AND_ENABLE: |
144 | d->devaddr = buf[1] & 0xf; |
145 | trace_adb_mouse_request_change_addr(d->devaddr); |
146 | break; |
147 | default: |
148 | if (!d->disable_direct_reg3_writes) { |
149 | d->devaddr = buf[1] & 0xf; |
150 | |
151 | /* we support handlers: |
152 | * 0x01: Classic Apple Mouse Protocol / 100 cpi operations |
153 | * 0x02: Classic Apple Mouse Protocol / 200 cpi operations |
154 | * we don't support handlers (at least): |
155 | * 0x03: Mouse systems A3 trackball |
156 | * 0x04: Extended Apple Mouse Protocol |
157 | * 0x2f: Microspeed mouse |
158 | * 0x42: Macally |
159 | * 0x5f: Microspeed mouse |
160 | * 0x66: Microspeed mouse |
161 | */ |
162 | if (buf[2] == 1 || buf[2] == 2) { |
163 | d->handler = buf[2]; |
164 | } |
165 | |
166 | trace_adb_mouse_request_change_addr_and_handler( |
167 | d->devaddr, d->handler); |
168 | } |
169 | break; |
170 | } |
171 | } |
172 | break; |
173 | case ADB_READREG: |
174 | switch (reg) { |
175 | case 0: |
176 | olen = adb_mouse_poll(d, obuf); |
177 | break; |
178 | case 1: |
179 | break; |
180 | case 3: |
181 | obuf[0] = d->devaddr; |
182 | obuf[1] = d->handler; |
183 | olen = 2; |
184 | break; |
185 | } |
186 | trace_adb_mouse_readreg(reg, obuf[0], obuf[1]); |
187 | break; |
188 | } |
189 | return olen; |
190 | } |
191 | |
192 | static void adb_mouse_reset(DeviceState *dev) |
193 | { |
194 | ADBDevice *d = ADB_DEVICE(dev); |
195 | MouseState *s = ADB_MOUSE(dev); |
196 | |
197 | d->handler = 2; |
198 | d->devaddr = ADB_DEVID_MOUSE; |
199 | s->last_buttons_state = s->buttons_state = 0; |
200 | s->dx = s->dy = s->dz = 0; |
201 | } |
202 | |
203 | static const VMStateDescription vmstate_adb_mouse = { |
204 | .name = "adb_mouse" , |
205 | .version_id = 2, |
206 | .minimum_version_id = 2, |
207 | .fields = (VMStateField[]) { |
208 | VMSTATE_STRUCT(parent_obj, MouseState, 0, vmstate_adb_device, |
209 | ADBDevice), |
210 | VMSTATE_INT32(buttons_state, MouseState), |
211 | VMSTATE_INT32(last_buttons_state, MouseState), |
212 | VMSTATE_INT32(dx, MouseState), |
213 | VMSTATE_INT32(dy, MouseState), |
214 | VMSTATE_INT32(dz, MouseState), |
215 | VMSTATE_END_OF_LIST() |
216 | } |
217 | }; |
218 | |
219 | static void adb_mouse_realizefn(DeviceState *dev, Error **errp) |
220 | { |
221 | MouseState *s = ADB_MOUSE(dev); |
222 | ADBMouseClass *amc = ADB_MOUSE_GET_CLASS(dev); |
223 | |
224 | amc->parent_realize(dev, errp); |
225 | |
226 | qemu_add_mouse_event_handler(adb_mouse_event, s, 0, "QEMU ADB Mouse" ); |
227 | } |
228 | |
229 | static void adb_mouse_initfn(Object *obj) |
230 | { |
231 | ADBDevice *d = ADB_DEVICE(obj); |
232 | |
233 | d->devaddr = ADB_DEVID_MOUSE; |
234 | } |
235 | |
236 | static void adb_mouse_class_init(ObjectClass *oc, void *data) |
237 | { |
238 | DeviceClass *dc = DEVICE_CLASS(oc); |
239 | ADBDeviceClass *adc = ADB_DEVICE_CLASS(oc); |
240 | ADBMouseClass *amc = ADB_MOUSE_CLASS(oc); |
241 | |
242 | device_class_set_parent_realize(dc, adb_mouse_realizefn, |
243 | &amc->parent_realize); |
244 | set_bit(DEVICE_CATEGORY_INPUT, dc->categories); |
245 | |
246 | adc->devreq = adb_mouse_request; |
247 | dc->reset = adb_mouse_reset; |
248 | dc->vmsd = &vmstate_adb_mouse; |
249 | } |
250 | |
251 | static const TypeInfo adb_mouse_type_info = { |
252 | .name = TYPE_ADB_MOUSE, |
253 | .parent = TYPE_ADB_DEVICE, |
254 | .instance_size = sizeof(MouseState), |
255 | .instance_init = adb_mouse_initfn, |
256 | .class_init = adb_mouse_class_init, |
257 | .class_size = sizeof(ADBMouseClass), |
258 | }; |
259 | |
260 | static void adb_mouse_register_types(void) |
261 | { |
262 | type_register_static(&adb_mouse_type_info); |
263 | } |
264 | |
265 | type_init(adb_mouse_register_types) |
266 | |