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[Qemu-devel] [PULL 7/7] ps2: fix sending of PAUSE/BREAK scancodes
From: |
Gerd Hoffmann |
Subject: |
[Qemu-devel] [PULL 7/7] ps2: fix sending of PAUSE/BREAK scancodes |
Date: |
Thu, 27 Jul 2017 16:00:25 +0200 |
From: "Daniel P. Berrange" <address@hidden>
The processing of the scancodes for PAUSE/BREAK has been broken since
the conversion to qcodes in:
commit 8c10e0baf0260b59a4e984744462a18016662e3e
Author: Hervé Poussineau <address@hidden>
Date: Thu Sep 15 22:06:26 2016 +0200
ps2: use QEMU qcodes instead of scancodes
When using a VNC client, with the raw scancode extension, the client
will send a scancode of 0xc6 for both PAUSE and BREAK. There is mistakenly
no entry in the qcode_to_number table for this scancode, so
ps2_keyboard_event() just generates a log message and discards the
scancode
When using a SPICE client, it will also send 0xc6 for BREAK, but
will send 0xe1 0x1d 0x45 0xe1 0x9d 0xc5 for PAUSE. There is no
entry in the qcode_to_number table for the scancode 0xe1 because
it is a special XT keyboard prefix not mapping to any QKeyCode.
Again ps2_keyboard_event() just generates a log message and discards
the scancode. The following 0x1d, 0x45, 0x9d, 0xc5 scancodes get
handled correctly. Rather than trying to handle 3 byte sequences
of scancodes in the PS/2 driver, special case the SPICE input
code so that it captures the 3 byte pause sequence and turns it
into a Pause QKeyCode.
Signed-off-by: Daniel P. Berrange <address@hidden>
Message-id: address@hidden
Signed-off-by: Gerd Hoffmann <address@hidden>
---
ui/keymaps.h | 1 +
ui/input-keymap.c | 1 +
ui/spice-input.c | 20 ++++++++++++++++++++
3 files changed, 22 insertions(+)
diff --git a/ui/keymaps.h b/ui/keymaps.h
index 47d061343e..8757465529 100644
--- a/ui/keymaps.h
+++ b/ui/keymaps.h
@@ -59,6 +59,7 @@ typedef struct {
/* "grey" keys will usually need a 0xe0 prefix */
#define SCANCODE_GREY 0x80
#define SCANCODE_EMUL0 0xE0
+#define SCANCODE_EMUL1 0xE1
/* "up" flag */
#define SCANCODE_UP 0x80
diff --git a/ui/input-keymap.c b/ui/input-keymap.c
index f96adf4165..0d9ddde9c9 100644
--- a/ui/input-keymap.c
+++ b/ui/input-keymap.c
@@ -233,6 +233,7 @@ static const int qcode_to_number[] = {
[Q_KEY_CODE_KP_ENTER] = 0x9c,
[Q_KEY_CODE_KP_DECIMAL] = 0x53,
[Q_KEY_CODE_SYSRQ] = 0x54,
+ [Q_KEY_CODE_PAUSE] = 0xc6,
[Q_KEY_CODE_KP_0] = 0x52,
[Q_KEY_CODE_KP_1] = 0x4f,
diff --git a/ui/spice-input.c b/ui/spice-input.c
index 918580239d..cda9976469 100644
--- a/ui/spice-input.c
+++ b/ui/spice-input.c
@@ -32,6 +32,7 @@ typedef struct QemuSpiceKbd {
SpiceKbdInstance sin;
int ledstate;
bool emul0;
+ size_t pauseseq;
} QemuSpiceKbd;
static void kbd_push_key(SpiceKbdInstance *sin, uint8_t frag);
@@ -64,6 +65,25 @@ static void kbd_push_key(SpiceKbdInstance *sin, uint8_t
scancode)
keycode |= SCANCODE_GREY;
}
+ if (scancode == SCANCODE_EMUL1) {
+ kbd->pauseseq++;
+ return;
+ } else if (kbd->pauseseq == 1) {
+ if (keycode == 0x1d) {
+ kbd->pauseseq++;
+ return;
+ } else {
+ kbd->pauseseq = 0;
+ }
+ } else if (kbd->pauseseq == 2) {
+ if (keycode == 0x45) {
+ qemu_input_event_send_key_qcode(NULL, Q_KEY_CODE_PAUSE, !up);
+ kbd->pauseseq = 0;
+ return;
+ }
+ kbd->pauseseq = 0;
+ }
+
qemu_input_event_send_key_number(NULL, keycode, !up);
}
--
2.9.3
- [Qemu-devel] [PULL 0/7] Ui 20170727 patches, Gerd Hoffmann, 2017/07/27
- [Qemu-devel] [PULL 2/7] ui: move qemu_input_linux_to_qcode(), Gerd Hoffmann, 2017/07/27
- [Qemu-devel] [PULL 5/7] ps2: enable multimedia keys, Gerd Hoffmann, 2017/07/27
- [Qemu-devel] [PULL 1/7] ui: add next and prior keysyms, Gerd Hoffmann, 2017/07/27
- [Qemu-devel] [PULL 3/7] ui: update keymaps, Gerd Hoffmann, 2017/07/27
- [Qemu-devel] [PULL 7/7] ps2: fix sending of PAUSE/BREAK scancodes,
Gerd Hoffmann <=
- [Qemu-devel] [PULL 6/7] ui: drop altgr and altgr_r QKeyCodes, Gerd Hoffmann, 2017/07/27
- [Qemu-devel] [PULL 4/7] ui: add multimedia keys, Gerd Hoffmann, 2017/07/27
Re: [Qemu-devel] [PULL 0/7] Ui 20170727 patches, Peter Maydell, 2017/07/27