7abe7eb294
This fixes an issue by adding bounds checking to multi-byte packets where the PS/2 mouse data stream may become corrupted due to data being discarded when the PS/2 ringbuffer is full. Interrupts for Multi-byte responses are postponed until the final byte has been queued. These changes fix a bug where windows guests drop the mouse device entirely requring the guest to be restarted. Signed-off-by: Geoffrey McRae <geoff@hostfission.com> Message-Id: <20180507150310.2FEA0381924@moya.office.hostfission.com> [ kraxel: codestyle fixes ] Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
50 lines
2.0 KiB
C
50 lines
2.0 KiB
C
/*
|
|
* QEMU PS/2 keyboard/mouse emulation
|
|
*
|
|
* Copyright (C) 2003 Fabrice Bellard
|
|
*
|
|
* 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.
|
|
*/
|
|
|
|
#ifndef HW_PS2_H
|
|
#define HW_PS2_H
|
|
|
|
#define PS2_MOUSE_BUTTON_LEFT 0x01
|
|
#define PS2_MOUSE_BUTTON_RIGHT 0x02
|
|
#define PS2_MOUSE_BUTTON_MIDDLE 0x04
|
|
#define PS2_MOUSE_BUTTON_SIDE 0x08
|
|
#define PS2_MOUSE_BUTTON_EXTRA 0x10
|
|
|
|
/* ps2.c */
|
|
void *ps2_kbd_init(void (*update_irq)(void *, int), void *update_arg);
|
|
void *ps2_mouse_init(void (*update_irq)(void *, int), void *update_arg);
|
|
void ps2_write_mouse(void *, int val);
|
|
void ps2_write_keyboard(void *, int val);
|
|
uint32_t ps2_read_data(PS2State *s);
|
|
void ps2_queue_noirq(PS2State *s, int b);
|
|
void ps2_raise_irq(PS2State *s);
|
|
void ps2_queue(PS2State *s, int b);
|
|
void ps2_queue_2(PS2State *s, int b1, int b2);
|
|
void ps2_queue_3(PS2State *s, int b1, int b2, int b3);
|
|
void ps2_queue_4(PS2State *s, int b1, int b2, int b3, int b4);
|
|
void ps2_keyboard_set_translation(void *opaque, int mode);
|
|
void ps2_mouse_fake_event(void *opaque);
|
|
|
|
#endif /* HW_PS2_H */
|