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Commit | Line | Data |
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aa71cf80 AJ |
1 | /* |
2 | * QEMU Microsoft serial mouse emulation | |
3 | * | |
4 | * Copyright (c) 2008 Lubomir Rintel | |
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 | */ | |
9c058332 | 24 | #include "qemu/osdep.h" |
28ecbaee | 25 | #include "qemu-common.h" |
dccfcd0e | 26 | #include "sysemu/char.h" |
28ecbaee | 27 | #include "ui/console.h" |
96d7c072 | 28 | #include "ui/input.h" |
aa71cf80 AJ |
29 | |
30 | #define MSMOUSE_LO6(n) ((n) & 0x3f) | |
31 | #define MSMOUSE_HI2(n) (((n) & 0xc0) >> 6) | |
32 | ||
cde8dcbc | 33 | typedef struct { |
0ec7b3e7 | 34 | Chardev parent; |
41ac54b2 | 35 | |
96d7c072 GH |
36 | QemuInputHandlerState *hs; |
37 | int axis[INPUT_AXIS__MAX]; | |
38 | bool btns[INPUT_BUTTON__MAX]; | |
d7b7f526 | 39 | bool btnc[INPUT_BUTTON__MAX]; |
57a4e3b9 GH |
40 | uint8_t outbuf[32]; |
41 | int outlen; | |
0ec7b3e7 | 42 | } MouseChardev; |
cde8dcbc | 43 | |
0ec7b3e7 | 44 | static void msmouse_chr_accept_input(Chardev *chr) |
57a4e3b9 | 45 | { |
0ec7b3e7 | 46 | MouseChardev *mouse = (MouseChardev *)chr; |
57a4e3b9 GH |
47 | int len; |
48 | ||
49 | len = qemu_chr_be_can_write(chr); | |
50 | if (len > mouse->outlen) { | |
51 | len = mouse->outlen; | |
52 | } | |
53 | if (!len) { | |
54 | return; | |
55 | } | |
56 | ||
57 | qemu_chr_be_write(chr, mouse->outbuf, len); | |
58 | mouse->outlen -= len; | |
59 | if (mouse->outlen) { | |
60 | memmove(mouse->outbuf, mouse->outbuf + len, mouse->outlen); | |
61 | } | |
62 | } | |
63 | ||
0ec7b3e7 | 64 | static void msmouse_queue_event(MouseChardev *mouse) |
aa71cf80 | 65 | { |
aa71cf80 | 66 | unsigned char bytes[4] = { 0x40, 0x00, 0x00, 0x00 }; |
d7b7f526 | 67 | int dx, dy, count = 3; |
96d7c072 GH |
68 | |
69 | dx = mouse->axis[INPUT_AXIS_X]; | |
70 | mouse->axis[INPUT_AXIS_X] = 0; | |
71 | ||
72 | dy = mouse->axis[INPUT_AXIS_Y]; | |
73 | mouse->axis[INPUT_AXIS_Y] = 0; | |
aa71cf80 AJ |
74 | |
75 | /* Movement deltas */ | |
76 | bytes[0] |= (MSMOUSE_HI2(dy) << 2) | MSMOUSE_HI2(dx); | |
77 | bytes[1] |= MSMOUSE_LO6(dx); | |
78 | bytes[2] |= MSMOUSE_LO6(dy); | |
79 | ||
80 | /* Buttons */ | |
96d7c072 GH |
81 | bytes[0] |= (mouse->btns[INPUT_BUTTON_LEFT] ? 0x20 : 0x00); |
82 | bytes[0] |= (mouse->btns[INPUT_BUTTON_RIGHT] ? 0x10 : 0x00); | |
d7b7f526 GH |
83 | if (mouse->btns[INPUT_BUTTON_MIDDLE] || |
84 | mouse->btnc[INPUT_BUTTON_MIDDLE]) { | |
85 | bytes[3] |= (mouse->btns[INPUT_BUTTON_MIDDLE] ? 0x20 : 0x00); | |
86 | mouse->btnc[INPUT_BUTTON_MIDDLE] = false; | |
87 | count = 4; | |
88 | } | |
89 | ||
90 | if (mouse->outlen <= sizeof(mouse->outbuf) - count) { | |
91 | memcpy(mouse->outbuf + mouse->outlen, bytes, count); | |
92 | mouse->outlen += count; | |
57a4e3b9 GH |
93 | } else { |
94 | /* queue full -> drop event */ | |
95 | } | |
96d7c072 | 96 | } |
57a4e3b9 | 97 | |
96d7c072 GH |
98 | static void msmouse_input_event(DeviceState *dev, QemuConsole *src, |
99 | InputEvent *evt) | |
100 | { | |
0ec7b3e7 | 101 | MouseChardev *mouse = (MouseChardev *)dev; |
96d7c072 GH |
102 | InputMoveEvent *move; |
103 | InputBtnEvent *btn; | |
104 | ||
105 | switch (evt->type) { | |
106 | case INPUT_EVENT_KIND_REL: | |
107 | move = evt->u.rel.data; | |
108 | mouse->axis[move->axis] += move->value; | |
109 | break; | |
110 | ||
111 | case INPUT_EVENT_KIND_BTN: | |
112 | btn = evt->u.btn.data; | |
113 | mouse->btns[btn->button] = btn->down; | |
d7b7f526 | 114 | mouse->btnc[btn->button] = true; |
96d7c072 GH |
115 | break; |
116 | ||
117 | default: | |
118 | /* keep gcc happy */ | |
119 | break; | |
120 | } | |
121 | } | |
122 | ||
123 | static void msmouse_input_sync(DeviceState *dev) | |
124 | { | |
0ec7b3e7 MAL |
125 | MouseChardev *mouse = (MouseChardev *)dev; |
126 | Chardev *chr = (Chardev *)dev; | |
96d7c072 GH |
127 | |
128 | msmouse_queue_event(mouse); | |
41ac54b2 | 129 | msmouse_chr_accept_input(chr); |
aa71cf80 AJ |
130 | } |
131 | ||
0ec7b3e7 | 132 | static int msmouse_chr_write(struct Chardev *s, const uint8_t *buf, int len) |
aa71cf80 AJ |
133 | { |
134 | /* Ignore writes to mouse port */ | |
135 | return len; | |
136 | } | |
137 | ||
0ec7b3e7 | 138 | static void msmouse_chr_free(struct Chardev *chr) |
aa71cf80 | 139 | { |
0ec7b3e7 | 140 | MouseChardev *mouse = (MouseChardev *)chr; |
cde8dcbc | 141 | |
96d7c072 | 142 | qemu_input_handler_unregister(mouse->hs); |
aa71cf80 AJ |
143 | } |
144 | ||
96d7c072 GH |
145 | static QemuInputHandler msmouse_handler = { |
146 | .name = "QEMU Microsoft Mouse", | |
147 | .mask = INPUT_EVENT_MASK_BTN | INPUT_EVENT_MASK_REL, | |
148 | .event = msmouse_input_event, | |
149 | .sync = msmouse_input_sync, | |
150 | }; | |
151 | ||
0ec7b3e7 MAL |
152 | static Chardev *qemu_chr_open_msmouse(const CharDriver *driver, |
153 | const char *id, | |
154 | ChardevBackend *backend, | |
155 | ChardevReturn *ret, | |
156 | bool *be_opened, | |
157 | Error **errp) | |
aa71cf80 | 158 | { |
32bafa8f | 159 | ChardevCommon *common = backend->u.msmouse.data; |
0ec7b3e7 MAL |
160 | MouseChardev *mouse; |
161 | Chardev *chr; | |
aa71cf80 | 162 | |
b68e956a | 163 | chr = qemu_chr_alloc(driver, common, errp); |
71200fb9 LM |
164 | if (!chr) { |
165 | return NULL; | |
166 | } | |
82878dac | 167 | *be_opened = false; |
aa71cf80 | 168 | |
0ec7b3e7 | 169 | mouse = (MouseChardev *)chr; |
96d7c072 GH |
170 | mouse->hs = qemu_input_handler_register((DeviceState *)mouse, |
171 | &msmouse_handler); | |
cde8dcbc | 172 | |
aa71cf80 | 173 | |
1f51470d | 174 | return chr; |
aa71cf80 | 175 | } |
5ab8211b AL |
176 | |
177 | static void register_types(void) | |
178 | { | |
0b812f31 | 179 | static const CharDriver driver = { |
0ec7b3e7 | 180 | .instance_size = sizeof(MouseChardev), |
0b812f31 MAL |
181 | .kind = CHARDEV_BACKEND_KIND_MSMOUSE, |
182 | .create = qemu_chr_open_msmouse, | |
b68e956a MAL |
183 | .chr_write = msmouse_chr_write, |
184 | .chr_accept_input = msmouse_chr_accept_input, | |
185 | .chr_free = msmouse_chr_free, | |
0b812f31 MAL |
186 | }; |
187 | register_char_driver(&driver); | |
5ab8211b AL |
188 | } |
189 | ||
190 | type_init(register_types); |