diff options
| author | Geoffrey McRae <geoff@hostfission.com> | 2018-05-07 23:13:12 +1000 |
|---|---|---|
| committer | Gerd Hoffmann <kraxel@redhat.com> | 2018-05-15 11:31:33 +0200 |
| commit | 7abe7eb29494b4e4a11ec99ae5623083409a2f1e (patch) | |
| tree | aa098e5265093a38774a3c2d54a618140c128cf3 /include/hw/input | |
| parent | 143c04c7e0639e53086519592ead15d2556bfbf2 (diff) | |
ps2: Fix mouse stream corruption due to lost data
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>
Diffstat (limited to 'include/hw/input')
| -rw-r--r-- | include/hw/input/ps2.h | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/include/hw/input/ps2.h b/include/hw/input/ps2.h index 94709b8502..213aa16aa3 100644 --- a/include/hw/input/ps2.h +++ b/include/hw/input/ps2.h @@ -37,7 +37,12 @@ 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); |