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author | aurel32 <aurel32@c046a42c-6fe2-441c-8c8c-71466251a162> | 2009-02-08 15:53:20 +0000 |
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committer | aurel32 <aurel32@c046a42c-6fe2-441c-8c8c-71466251a162> | 2009-02-08 15:53:20 +0000 |
commit | aa71cf802eb884dcdaebae6fbbd008248a64a01b (patch) | |
tree | 938f1e79c08d2d106f84915825be8b4d0bd4699a /hw | |
parent | d5853c20f2bd7c4551fcb99b4d1a188c25ffd140 (diff) | |
download | qemu-aa71cf802eb884dcdaebae6fbbd008248a64a01b.zip qemu-aa71cf802eb884dcdaebae6fbbd008248a64a01b.tar.gz qemu-aa71cf802eb884dcdaebae6fbbd008248a64a01b.tar.bz2 |
QEMU Microsoft serial mouse emulation
Adds "msmouse" character device, which emulates a serial mouse.
Use it with -serial msmouse.
Signed-Off-By: Lubomir Rintel <lkundrak@v3.sk>
Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@6559 c046a42c-6fe2-441c-8c8c-71466251a162
Diffstat (limited to 'hw')
-rw-r--r-- | hw/msmouse.c | 78 | ||||
-rw-r--r-- | hw/msmouse.h | 2 |
2 files changed, 80 insertions, 0 deletions
diff --git a/hw/msmouse.c b/hw/msmouse.c new file mode 100644 index 0000000..69356a5 --- /dev/null +++ b/hw/msmouse.c @@ -0,0 +1,78 @@ +/* + * QEMU Microsoft serial mouse emulation + * + * Copyright (c) 2008 Lubomir Rintel + * + * Permission is hereby granted, free of charge, to any person obtaining a copy + * of this software and associated documentation files (the "Software"), to deal + * in the Software without restriction, including without limitation the rights + * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell + * copies of the Software, and to permit persons to whom the Software is + * furnished to do so, subject to the following conditions: + * + * The above copyright notice and this permission notice shall be included in + * all copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR + * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, + * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL + * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER + * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, + * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN + * THE SOFTWARE. + */ +#include <stdlib.h> +#include "../qemu-common.h" +#include "../qemu-char.h" +#include "../console.h" +#include "msmouse.h" + +#define MSMOUSE_LO6(n) ((n) & 0x3f) +#define MSMOUSE_HI2(n) (((n) & 0xc0) >> 6) + +static void msmouse_event(void *opaque, + int dx, int dy, int dz, int buttons_state) +{ + CharDriverState *chr = (CharDriverState *)opaque; + + unsigned char bytes[4] = { 0x40, 0x00, 0x00, 0x00 }; + + /* Movement deltas */ + bytes[0] |= (MSMOUSE_HI2(dy) << 2) | MSMOUSE_HI2(dx); + bytes[1] |= MSMOUSE_LO6(dx); + bytes[2] |= MSMOUSE_LO6(dy); + + /* Buttons */ + bytes[0] |= (buttons_state & 0x01 ? 0x20 : 0x00); + bytes[0] |= (buttons_state & 0x02 ? 0x10 : 0x00); + bytes[3] |= (buttons_state & 0x04 ? 0x20 : 0x00); + + /* We always send the packet of, so that we do not have to keep track + of previous state of the middle button. This can potentially confuse + some very old drivers for two button mice though. */ + qemu_chr_read(chr, bytes, 4); +} + +static int msmouse_chr_write (struct CharDriverState *s, const uint8_t *buf, int len) +{ + /* Ignore writes to mouse port */ + return len; +} + +static void msmouse_chr_close (struct CharDriverState *chr) +{ + qemu_free (chr); +} + +CharDriverState *qemu_chr_open_msmouse(void) +{ + CharDriverState *chr; + + chr = qemu_mallocz(sizeof(CharDriverState)); + chr->chr_write = msmouse_chr_write; + chr->chr_close = msmouse_chr_close; + + qemu_add_mouse_event_handler(msmouse_event, chr, 0, "QEMU Microsoft Mouse"); + + return chr; +} diff --git a/hw/msmouse.h b/hw/msmouse.h new file mode 100644 index 0000000..947afd9 --- /dev/null +++ b/hw/msmouse.h @@ -0,0 +1,2 @@ +/* msmouse.c */ +CharDriverState *qemu_chr_open_msmouse(void); |