aa71cf802e
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
79 lines
2.6 KiB
C
79 lines
2.6 KiB
C
/*
|
|
* 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;
|
|
}
|