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77cb0f5a LV |
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 | #include "qemu/osdep.h" | |
25 | #include "ui/console.h" | |
26 | #include "hw/input/adb.h" | |
27 | #include "adb-internal.h" | |
28 | #include "trace.h" | |
29 | ||
30 | #define ADB_MOUSE(obj) OBJECT_CHECK(MouseState, (obj), TYPE_ADB_MOUSE) | |
31 | ||
32 | typedef struct MouseState { | |
33 | /*< public >*/ | |
34 | ADBDevice parent_obj; | |
35 | /*< private >*/ | |
36 | ||
37 | int buttons_state, last_buttons_state; | |
38 | int dx, dy, dz; | |
39 | } MouseState; | |
40 | ||
41 | #define ADB_MOUSE_CLASS(class) \ | |
42 | OBJECT_CLASS_CHECK(ADBMouseClass, (class), TYPE_ADB_MOUSE) | |
43 | #define ADB_MOUSE_GET_CLASS(obj) \ | |
44 | OBJECT_GET_CLASS(ADBMouseClass, (obj), TYPE_ADB_MOUSE) | |
45 | ||
46 | typedef struct ADBMouseClass { | |
47 | /*< public >*/ | |
48 | ADBDeviceClass parent_class; | |
49 | /*< private >*/ | |
50 | ||
51 | DeviceRealize parent_realize; | |
52 | } ADBMouseClass; | |
53 | ||
54 | static void adb_mouse_event(void *opaque, | |
55 | int dx1, int dy1, int dz1, int buttons_state) | |
56 | { | |
57 | MouseState *s = opaque; | |
58 | ||
59 | s->dx += dx1; | |
60 | s->dy += dy1; | |
61 | s->dz += dz1; | |
62 | s->buttons_state = buttons_state; | |
63 | } | |
64 | ||
65 | ||
66 | static int adb_mouse_poll(ADBDevice *d, uint8_t *obuf) | |
67 | { | |
68 | MouseState *s = ADB_MOUSE(d); | |
69 | int dx, dy; | |
70 | ||
71 | if (s->last_buttons_state == s->buttons_state && | |
72 | s->dx == 0 && s->dy == 0) { | |
73 | return 0; | |
74 | } | |
75 | ||
76 | dx = s->dx; | |
77 | if (dx < -63) { | |
78 | dx = -63; | |
79 | } else if (dx > 63) { | |
80 | dx = 63; | |
81 | } | |
82 | ||
83 | dy = s->dy; | |
84 | if (dy < -63) { | |
85 | dy = -63; | |
86 | } else if (dy > 63) { | |
87 | dy = 63; | |
88 | } | |
89 | ||
90 | s->dx -= dx; | |
91 | s->dy -= dy; | |
92 | s->last_buttons_state = s->buttons_state; | |
93 | ||
94 | dx &= 0x7f; | |
95 | dy &= 0x7f; | |
96 | ||
97 | if (!(s->buttons_state & MOUSE_EVENT_LBUTTON)) { | |
98 | dy |= 0x80; | |
99 | } | |
100 | if (!(s->buttons_state & MOUSE_EVENT_RBUTTON)) { | |
101 | dx |= 0x80; | |
102 | } | |
103 | ||
104 | obuf[0] = dy; | |
105 | obuf[1] = dx; | |
106 | return 2; | |
107 | } | |
108 | ||
109 | static int adb_mouse_request(ADBDevice *d, uint8_t *obuf, | |
110 | const uint8_t *buf, int len) | |
111 | { | |
112 | MouseState *s = ADB_MOUSE(d); | |
113 | int cmd, reg, olen; | |
114 | ||
115 | if ((buf[0] & 0x0f) == ADB_FLUSH) { | |
116 | /* flush mouse fifo */ | |
117 | s->buttons_state = s->last_buttons_state; | |
118 | s->dx = 0; | |
119 | s->dy = 0; | |
120 | s->dz = 0; | |
9d9769c2 | 121 | trace_adb_mouse_flush(); |
77cb0f5a LV |
122 | return 0; |
123 | } | |
124 | ||
125 | cmd = buf[0] & 0xc; | |
126 | reg = buf[0] & 0x3; | |
127 | olen = 0; | |
128 | switch (cmd) { | |
129 | case ADB_WRITEREG: | |
130 | trace_adb_mouse_writereg(reg, buf[1]); | |
131 | switch (reg) { | |
132 | case 2: | |
133 | break; | |
134 | case 3: | |
135 | switch (buf[2]) { | |
136 | case ADB_CMD_SELF_TEST: | |
137 | break; | |
138 | case ADB_CMD_CHANGE_ID: | |
139 | case ADB_CMD_CHANGE_ID_AND_ACT: | |
140 | case ADB_CMD_CHANGE_ID_AND_ENABLE: | |
141 | d->devaddr = buf[1] & 0xf; | |
9d9769c2 | 142 | trace_adb_mouse_request_change_addr(d->devaddr); |
77cb0f5a LV |
143 | break; |
144 | default: | |
84051eb4 MCA |
145 | if (!d->disable_direct_reg3_writes) { |
146 | d->devaddr = buf[1] & 0xf; | |
147 | ||
148 | /* we support handlers: | |
149 | * 0x01: Classic Apple Mouse Protocol / 100 cpi operations | |
150 | * 0x02: Classic Apple Mouse Protocol / 200 cpi operations | |
151 | * we don't support handlers (at least): | |
152 | * 0x03: Mouse systems A3 trackball | |
153 | * 0x04: Extended Apple Mouse Protocol | |
154 | * 0x2f: Microspeed mouse | |
155 | * 0x42: Macally | |
156 | * 0x5f: Microspeed mouse | |
157 | * 0x66: Microspeed mouse | |
158 | */ | |
159 | if (buf[2] == 1 || buf[2] == 2) { | |
160 | d->handler = buf[2]; | |
161 | } | |
162 | ||
163 | trace_adb_mouse_request_change_addr_and_handler( | |
164 | d->devaddr, d->handler); | |
77cb0f5a LV |
165 | } |
166 | break; | |
167 | } | |
168 | } | |
169 | break; | |
170 | case ADB_READREG: | |
171 | switch (reg) { | |
172 | case 0: | |
173 | olen = adb_mouse_poll(d, obuf); | |
174 | break; | |
175 | case 1: | |
176 | break; | |
177 | case 3: | |
fb6649f1 MCA |
178 | obuf[0] = d->devaddr; |
179 | obuf[1] = d->handler; | |
77cb0f5a LV |
180 | olen = 2; |
181 | break; | |
182 | } | |
183 | trace_adb_mouse_readreg(reg, obuf[0], obuf[1]); | |
184 | break; | |
185 | } | |
186 | return olen; | |
187 | } | |
188 | ||
189 | static void adb_mouse_reset(DeviceState *dev) | |
190 | { | |
191 | ADBDevice *d = ADB_DEVICE(dev); | |
192 | MouseState *s = ADB_MOUSE(dev); | |
193 | ||
194 | d->handler = 2; | |
195 | d->devaddr = ADB_DEVID_MOUSE; | |
196 | s->last_buttons_state = s->buttons_state = 0; | |
197 | s->dx = s->dy = s->dz = 0; | |
198 | } | |
199 | ||
200 | static const VMStateDescription vmstate_adb_mouse = { | |
201 | .name = "adb_mouse", | |
202 | .version_id = 2, | |
203 | .minimum_version_id = 2, | |
204 | .fields = (VMStateField[]) { | |
205 | VMSTATE_STRUCT(parent_obj, MouseState, 0, vmstate_adb_device, | |
206 | ADBDevice), | |
207 | VMSTATE_INT32(buttons_state, MouseState), | |
208 | VMSTATE_INT32(last_buttons_state, MouseState), | |
209 | VMSTATE_INT32(dx, MouseState), | |
210 | VMSTATE_INT32(dy, MouseState), | |
211 | VMSTATE_INT32(dz, MouseState), | |
212 | VMSTATE_END_OF_LIST() | |
213 | } | |
214 | }; | |
215 | ||
216 | static void adb_mouse_realizefn(DeviceState *dev, Error **errp) | |
217 | { | |
218 | MouseState *s = ADB_MOUSE(dev); | |
219 | ADBMouseClass *amc = ADB_MOUSE_GET_CLASS(dev); | |
220 | ||
221 | amc->parent_realize(dev, errp); | |
222 | ||
223 | qemu_add_mouse_event_handler(adb_mouse_event, s, 0, "QEMU ADB Mouse"); | |
224 | } | |
225 | ||
226 | static void adb_mouse_initfn(Object *obj) | |
227 | { | |
228 | ADBDevice *d = ADB_DEVICE(obj); | |
229 | ||
230 | d->devaddr = ADB_DEVID_MOUSE; | |
231 | } | |
232 | ||
233 | static void adb_mouse_class_init(ObjectClass *oc, void *data) | |
234 | { | |
235 | DeviceClass *dc = DEVICE_CLASS(oc); | |
236 | ADBDeviceClass *adc = ADB_DEVICE_CLASS(oc); | |
237 | ADBMouseClass *amc = ADB_MOUSE_CLASS(oc); | |
238 | ||
bf853881 PMD |
239 | device_class_set_parent_realize(dc, adb_mouse_realizefn, |
240 | &amc->parent_realize); | |
77cb0f5a LV |
241 | set_bit(DEVICE_CATEGORY_INPUT, dc->categories); |
242 | ||
243 | adc->devreq = adb_mouse_request; | |
244 | dc->reset = adb_mouse_reset; | |
245 | dc->vmsd = &vmstate_adb_mouse; | |
246 | } | |
247 | ||
248 | static const TypeInfo adb_mouse_type_info = { | |
249 | .name = TYPE_ADB_MOUSE, | |
250 | .parent = TYPE_ADB_DEVICE, | |
251 | .instance_size = sizeof(MouseState), | |
252 | .instance_init = adb_mouse_initfn, | |
253 | .class_init = adb_mouse_class_init, | |
254 | .class_size = sizeof(ADBMouseClass), | |
255 | }; | |
256 | ||
257 | static void adb_mouse_register_types(void) | |
258 | { | |
259 | type_register_static(&adb_mouse_type_info); | |
260 | } | |
261 | ||
262 | type_init(adb_mouse_register_types) |