root / hw / msmouse.c @ b8c18e4c
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1 | aa71cf80 | aurel32 | /*
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2 | aa71cf80 | aurel32 | * QEMU Microsoft serial mouse emulation
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3 | aa71cf80 | aurel32 | *
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4 | aa71cf80 | aurel32 | * Copyright (c) 2008 Lubomir Rintel
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5 | aa71cf80 | aurel32 | *
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6 | aa71cf80 | aurel32 | * Permission is hereby granted, free of charge, to any person obtaining a copy
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7 | aa71cf80 | aurel32 | * of this software and associated documentation files (the "Software"), to deal
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8 | aa71cf80 | aurel32 | * in the Software without restriction, including without limitation the rights
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9 | aa71cf80 | aurel32 | * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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10 | aa71cf80 | aurel32 | * copies of the Software, and to permit persons to whom the Software is
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11 | aa71cf80 | aurel32 | * furnished to do so, subject to the following conditions:
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12 | aa71cf80 | aurel32 | *
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13 | aa71cf80 | aurel32 | * The above copyright notice and this permission notice shall be included in
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14 | aa71cf80 | aurel32 | * all copies or substantial portions of the Software.
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15 | aa71cf80 | aurel32 | *
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16 | aa71cf80 | aurel32 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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17 | aa71cf80 | aurel32 | * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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18 | aa71cf80 | aurel32 | * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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19 | aa71cf80 | aurel32 | * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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20 | aa71cf80 | aurel32 | * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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21 | aa71cf80 | aurel32 | * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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22 | aa71cf80 | aurel32 | * THE SOFTWARE.
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23 | aa71cf80 | aurel32 | */
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24 | aa71cf80 | aurel32 | #include <stdlib.h> |
25 | aa71cf80 | aurel32 | #include "../qemu-common.h" |
26 | aa71cf80 | aurel32 | #include "../qemu-char.h" |
27 | aa71cf80 | aurel32 | #include "../console.h" |
28 | aa71cf80 | aurel32 | #include "msmouse.h" |
29 | aa71cf80 | aurel32 | |
30 | aa71cf80 | aurel32 | #define MSMOUSE_LO6(n) ((n) & 0x3f) |
31 | aa71cf80 | aurel32 | #define MSMOUSE_HI2(n) (((n) & 0xc0) >> 6) |
32 | aa71cf80 | aurel32 | |
33 | aa71cf80 | aurel32 | static void msmouse_event(void *opaque, |
34 | aa71cf80 | aurel32 | int dx, int dy, int dz, int buttons_state) |
35 | aa71cf80 | aurel32 | { |
36 | aa71cf80 | aurel32 | CharDriverState *chr = (CharDriverState *)opaque; |
37 | aa71cf80 | aurel32 | |
38 | aa71cf80 | aurel32 | unsigned char bytes[4] = { 0x40, 0x00, 0x00, 0x00 }; |
39 | aa71cf80 | aurel32 | |
40 | aa71cf80 | aurel32 | /* Movement deltas */
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41 | aa71cf80 | aurel32 | bytes[0] |= (MSMOUSE_HI2(dy) << 2) | MSMOUSE_HI2(dx); |
42 | aa71cf80 | aurel32 | bytes[1] |= MSMOUSE_LO6(dx);
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43 | aa71cf80 | aurel32 | bytes[2] |= MSMOUSE_LO6(dy);
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44 | aa71cf80 | aurel32 | |
45 | aa71cf80 | aurel32 | /* Buttons */
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46 | aa71cf80 | aurel32 | bytes[0] |= (buttons_state & 0x01 ? 0x20 : 0x00); |
47 | aa71cf80 | aurel32 | bytes[0] |= (buttons_state & 0x02 ? 0x10 : 0x00); |
48 | aa71cf80 | aurel32 | bytes[3] |= (buttons_state & 0x04 ? 0x20 : 0x00); |
49 | aa71cf80 | aurel32 | |
50 | aa71cf80 | aurel32 | /* We always send the packet of, so that we do not have to keep track
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51 | aa71cf80 | aurel32 | of previous state of the middle button. This can potentially confuse
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52 | aa71cf80 | aurel32 | some very old drivers for two button mice though. */
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53 | aa71cf80 | aurel32 | qemu_chr_read(chr, bytes, 4);
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54 | aa71cf80 | aurel32 | } |
55 | aa71cf80 | aurel32 | |
56 | aa71cf80 | aurel32 | static int msmouse_chr_write (struct CharDriverState *s, const uint8_t *buf, int len) |
57 | aa71cf80 | aurel32 | { |
58 | aa71cf80 | aurel32 | /* Ignore writes to mouse port */
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59 | aa71cf80 | aurel32 | return len;
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60 | aa71cf80 | aurel32 | } |
61 | aa71cf80 | aurel32 | |
62 | aa71cf80 | aurel32 | static void msmouse_chr_close (struct CharDriverState *chr) |
63 | aa71cf80 | aurel32 | { |
64 | aa71cf80 | aurel32 | qemu_free (chr); |
65 | aa71cf80 | aurel32 | } |
66 | aa71cf80 | aurel32 | |
67 | aa71cf80 | aurel32 | CharDriverState *qemu_chr_open_msmouse(void)
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68 | aa71cf80 | aurel32 | { |
69 | aa71cf80 | aurel32 | CharDriverState *chr; |
70 | aa71cf80 | aurel32 | |
71 | aa71cf80 | aurel32 | chr = qemu_mallocz(sizeof(CharDriverState));
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72 | aa71cf80 | aurel32 | chr->chr_write = msmouse_chr_write; |
73 | aa71cf80 | aurel32 | chr->chr_close = msmouse_chr_close; |
74 | aa71cf80 | aurel32 | |
75 | aa71cf80 | aurel32 | qemu_add_mouse_event_handler(msmouse_event, chr, 0, "QEMU Microsoft Mouse"); |
76 | aa71cf80 | aurel32 | |
77 | aa71cf80 | aurel32 | return chr;
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78 | aa71cf80 | aurel32 | } |