Merge remote-tracking branch 'remotes/kraxel/tags/input-20171023-pull-request' into staging

input: fixes for ui input code and ps/2 keyboard (mostly sysrq key)

# gpg: Signature made Mon 23 Oct 2017 10:19:22 BST
# gpg:                using RSA key 0x4CB6D8EED3E87138
# gpg: Good signature from "Gerd Hoffmann (work) <kraxel@redhat.com>"
# gpg:                 aka "Gerd Hoffmann <gerd@kraxel.org>"
# gpg:                 aka "Gerd Hoffmann (private) <kraxel@gmail.com>"
# Primary key fingerprint: A032 8CFF B93A 17A7 9901  FE7D 4CB6 D8EE D3E8 7138

* remotes/kraxel/tags/input-20171023-pull-request:
  ui: pull in latest keycodemapdb
  ui: normalize the 'sysrq' key into the 'print' key
  ps2: fix scancodes sent for Ctrl+Pause key combination
  ps2: fix scancodess sent for Pause key in AT set 1
  ps2: fix scancodes sent for Shift/Ctrl+Print key combination
  ps2: fix scancodes sent for Alt-Print key combination (aka SysRq)
  ui: use correct union field for key number
  ui: fix crash with sendkey and raw key numbers
  input: use hex in ps2 keycode trace events

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>

6 files changed, 200 insertions, 38 deletions

diff --git a/hw/input/ps2.c b/hw/input/ps2.c
index dff3f1e024..f388a23c8e 100644
--- a/hw/input/ps2.c
+++ b/hw/input/ps2.c
@@ -78,6 +78,14 @@
 
 #define PS2_QUEUE_SIZE 16  /* Buffer size required by PS/2 protocol */
 
+/* Bits for 'modifiers' field in PS2KbdState */
+#define MOD_CTRL_L  (1 << 0)
+#define MOD_SHIFT_L (1 << 1)
+#define MOD_ALT_L   (1 << 2)
+#define MOD_CTRL_R  (1 << 3)
+#define MOD_SHIFT_R (1 << 4)
+#define MOD_ALT_R   (1 << 5)
+
 typedef struct {
     /* Keep the data array 256 bytes long, which compatibility
      with older qemu versions. */
@@ -99,6 +107,7 @@ typedef struct {
     int scancode_set; /* 1=XT, 2=AT, 3=PS/2 */
     int ledstate;
     bool need_high_bit;
+    unsigned int modifiers; /* bitmask of MOD_* constants above */
 } PS2KbdState;
 
 typedef struct {
@@ -545,6 +554,26 @@ static uint8_t translate_table[256] = {
     0xf8, 0xf9, 0xfa, 0xfb, 0xfc, 0xfd, 0xfe, 0xff,
 };
 
+static unsigned int ps2_modifier_bit(QKeyCode key)
+{
+    switch (key) {
+    case Q_KEY_CODE_CTRL:
+        return MOD_CTRL_L;
+    case Q_KEY_CODE_CTRL_R:
+        return MOD_CTRL_R;
+    case Q_KEY_CODE_SHIFT:
+        return MOD_SHIFT_L;
+    case Q_KEY_CODE_SHIFT_R:
+        return MOD_SHIFT_R;
+    case Q_KEY_CODE_ALT:
+        return MOD_ALT_L;
+    case Q_KEY_CODE_ALT_R:
+        return MOD_ALT_R;
+    default:
+        return 0;
+    }
+}
+
 static void ps2_reset_queue(PS2State *s)
 {
     PS2Queue *q = &s->queue;
@@ -596,32 +625,85 @@ static void ps2_keyboard_event(DeviceState *dev, QemuConsole *src,
     InputKeyEvent *key = evt->u.key.data;
     int qcode;
     uint16_t keycode;
+    int mod;
 
     qemu_system_wakeup_request(QEMU_WAKEUP_REASON_OTHER);
     assert(evt->type == INPUT_EVENT_KIND_KEY);
     qcode = qemu_input_key_value_to_qcode(key->key);
 
+    mod = ps2_modifier_bit(qcode);
+    trace_ps2_keyboard_event(s, qcode, key->down, mod, s->modifiers);
+    if (key->down) {
+        s->modifiers |= mod;
+    } else {
+        s->modifiers &= ~mod;
+    }
+
     if (s->scancode_set == 1) {
         if (qcode == Q_KEY_CODE_PAUSE) {
-            if (key->down) {
-                ps2_put_keycode(s, 0xe1);
-                ps2_put_keycode(s, 0x1d);
-                ps2_put_keycode(s, 0x45);
-                ps2_put_keycode(s, 0x91);
-                ps2_put_keycode(s, 0x9d);
-                ps2_put_keycode(s, 0xc5);
+            if (s->modifiers & (MOD_CTRL_L | MOD_CTRL_R)) {
+                if (key->down) {
+                    ps2_put_keycode(s, 0xe0);
+                    ps2_put_keycode(s, 0x46);
+                    ps2_put_keycode(s, 0xe0);
+                    ps2_put_keycode(s, 0xc6);
+                }
+            } else {
+                if (key->down) {
+                    ps2_put_keycode(s, 0xe1);
+                    ps2_put_keycode(s, 0x1d);
+                    ps2_put_keycode(s, 0x45);
+                    ps2_put_keycode(s, 0xe1);
+                    ps2_put_keycode(s, 0x9d);
+                    ps2_put_keycode(s, 0xc5);
+                }
             }
         } else if (qcode == Q_KEY_CODE_PRINT) {
-            if (key->down) {
-                ps2_put_keycode(s, 0xe0);
-                ps2_put_keycode(s, 0x2a);
-                ps2_put_keycode(s, 0xe0);
-                ps2_put_keycode(s, 0x37);
+            if (s->modifiers & MOD_ALT_L) {
+                if (key->down) {
+                    ps2_put_keycode(s, 0xb8);
+                    ps2_put_keycode(s, 0x38);
+                    ps2_put_keycode(s, 0x54);
+                } else {
+                    ps2_put_keycode(s, 0xd4);
+                    ps2_put_keycode(s, 0xb8);
+                    ps2_put_keycode(s, 0x38);
+                }
+            } else if (s->modifiers & MOD_ALT_R) {
+                if (key->down) {
+                    ps2_put_keycode(s, 0xe0);
+                    ps2_put_keycode(s, 0xb8);
+                    ps2_put_keycode(s, 0xe0);
+                    ps2_put_keycode(s, 0x38);
+                    ps2_put_keycode(s, 0x54);
+                } else {
+                    ps2_put_keycode(s, 0xd4);
+                    ps2_put_keycode(s, 0xe0);
+                    ps2_put_keycode(s, 0xb8);
+                    ps2_put_keycode(s, 0xe0);
+                    ps2_put_keycode(s, 0x38);
+                }
+            } else if (s->modifiers & (MOD_SHIFT_L | MOD_CTRL_L |
+                                       MOD_SHIFT_R | MOD_CTRL_R)) {
+                if (key->down) {
+                    ps2_put_keycode(s, 0xe0);
+                    ps2_put_keycode(s, 0x37);
+                } else {
+                    ps2_put_keycode(s, 0xe0);
+                    ps2_put_keycode(s, 0xb7);
+                }
             } else {
-                ps2_put_keycode(s, 0xe0);
-                ps2_put_keycode(s, 0xb7);
-                ps2_put_keycode(s, 0xe0);
-                ps2_put_keycode(s, 0xaa);
+                if (key->down) {
+                    ps2_put_keycode(s, 0xe0);
+                    ps2_put_keycode(s, 0x2a);
+                    ps2_put_keycode(s, 0xe0);
+                    ps2_put_keycode(s, 0x37);
+                } else {
+                    ps2_put_keycode(s, 0xe0);
+                    ps2_put_keycode(s, 0xb7);
+                    ps2_put_keycode(s, 0xe0);
+                    ps2_put_keycode(s, 0xaa);
+                }
             }
         } else {
             keycode = qcode_to_keycode_set1[qcode];
@@ -640,29 +722,81 @@ static void ps2_keyboard_event(DeviceState *dev, QemuConsole *src,
         }
     } else if (s->scancode_set == 2) {
         if (qcode == Q_KEY_CODE_PAUSE) {
-            if (key->down) {
-                ps2_put_keycode(s, 0xe1);
-                ps2_put_keycode(s, 0x14);
-                ps2_put_keycode(s, 0x77);
-                ps2_put_keycode(s, 0xe1);
-                ps2_put_keycode(s, 0xf0);
-                ps2_put_keycode(s, 0x14);
-                ps2_put_keycode(s, 0xf0);
-                ps2_put_keycode(s, 0x77);
+            if (s->modifiers & (MOD_CTRL_L | MOD_CTRL_R)) {
+                if (key->down) {
+                    ps2_put_keycode(s, 0xe0);
+                    ps2_put_keycode(s, 0x7e);
+                    ps2_put_keycode(s, 0xe0);
+                    ps2_put_keycode(s, 0xf0);
+                    ps2_put_keycode(s, 0x7e);
+                }
+            } else {
+                if (key->down) {
+                    ps2_put_keycode(s, 0xe1);
+                    ps2_put_keycode(s, 0x14);
+                    ps2_put_keycode(s, 0x77);
+                    ps2_put_keycode(s, 0xe1);
+                    ps2_put_keycode(s, 0xf0);
+                    ps2_put_keycode(s, 0x14);
+                    ps2_put_keycode(s, 0xf0);
+                    ps2_put_keycode(s, 0x77);
+                }
             }
         } else if (qcode == Q_KEY_CODE_PRINT) {
-            if (key->down) {
-                ps2_put_keycode(s, 0xe0);
-                ps2_put_keycode(s, 0x12);
-                ps2_put_keycode(s, 0xe0);
-                ps2_put_keycode(s, 0x7c);
+            if (s->modifiers & MOD_ALT_L) {
+                if (key->down) {
+                    ps2_put_keycode(s, 0xf0);
+                    ps2_put_keycode(s, 0x11);
+                    ps2_put_keycode(s, 0x11);
+                    ps2_put_keycode(s, 0x84);
+                } else {
+                    ps2_put_keycode(s, 0xf0);
+                    ps2_put_keycode(s, 0x84);
+                    ps2_put_keycode(s, 0xf0);
+                    ps2_put_keycode(s, 0x11);
+                    ps2_put_keycode(s, 0x11);
+                }
+            } else if (s->modifiers & MOD_ALT_R) {
+                if (key->down) {
+                    ps2_put_keycode(s, 0xe0);
+                    ps2_put_keycode(s, 0xf0);
+                    ps2_put_keycode(s, 0x11);
+                    ps2_put_keycode(s, 0xe0);
+                    ps2_put_keycode(s, 0x11);
+                    ps2_put_keycode(s, 0x84);
+                } else {
+                    ps2_put_keycode(s, 0xf0);
+                    ps2_put_keycode(s, 0x84);
+                    ps2_put_keycode(s, 0xe0);
+                    ps2_put_keycode(s, 0xf0);
+                    ps2_put_keycode(s, 0x11);
+                    ps2_put_keycode(s, 0xe0);
+                    ps2_put_keycode(s, 0x11);
+                }
+            } else if (s->modifiers & (MOD_SHIFT_L | MOD_CTRL_L |
+                                       MOD_SHIFT_R | MOD_CTRL_R)) {
+                if (key->down) {
+                    ps2_put_keycode(s, 0xe0);
+                    ps2_put_keycode(s, 0x7c);
+                } else {
+                    ps2_put_keycode(s, 0xe0);
+                    ps2_put_keycode(s, 0xf0);
+                    ps2_put_keycode(s, 0x7c);
+                }
             } else {
-                ps2_put_keycode(s, 0xe0);
-                ps2_put_keycode(s, 0xf0);
-                ps2_put_keycode(s, 0x7c);
-                ps2_put_keycode(s, 0xe0);
-                ps2_put_keycode(s, 0xf0);
-                ps2_put_keycode(s, 0x12);
+                if (key->down) {
+                    ps2_put_keycode(s, 0xe0);
+                    ps2_put_keycode(s, 0x12);
+                    ps2_put_keycode(s, 0xe0);
+                    ps2_put_keycode(s, 0x7c);
+                } else {
+                    ps2_put_keycode(s, 0xe0);
+                    ps2_put_keycode(s, 0xf0);
+                    ps2_put_keycode(s, 0x7c);
+                    ps2_put_keycode(s, 0xe0);
+                    ps2_put_keycode(s, 0xf0);
+                    ps2_put_keycode(s, 0x12);
+                }
             }
         } else {
             keycode = qcode_to_keycode_set2[qcode];
@@ -1125,6 +1259,7 @@ static void ps2_kbd_reset(void *opaque)
     s->scan_enabled = 0;
     s->translate = 0;
     s->scancode_set = 2;
+    s->modifiers = 0;
 }
 
 static void ps2_mouse_reset(void *opaque)
diff --git a/hw/input/trace-events b/hw/input/trace-events
index 6fcb3c063f..88150ef7a6 100644
--- a/hw/input/trace-events
+++ b/hw/input/trace-events
@@ -1,7 +1,8 @@
 # See docs/devel/tracing.txt for syntax documentation.
 
 # hw/input/ps2.c
-ps2_put_keycode(void *opaque, int keycode) "%p keycode %d"
+ps2_put_keycode(void *opaque, int keycode) "%p keycode 0x%02x"
+ps2_keyboard_event(void *opaque, int qcode, int down, unsigned int modifier, unsigned int modifiers) "%p qcode %d down %d modifier 0x%x modifiers 0x%x"
 ps2_read_data(void *opaque) "%p"
 ps2_set_ledstate(void *s, int ledstate) "%p ledstate %d"
 ps2_reset_keyboard(void *s) "%p"
diff --git a/qapi/ui.json b/qapi/ui.json
index e5d6610b4a..07b468f625 100644
--- a/qapi/ui.json
+++ b/qapi/ui.json
@@ -748,6 +748,13 @@
 # @ac_bookmarks: since 2.10
 # altgr, altgr_r: dropped in 2.10
 #
+# 'sysrq' was mistakenly added to hack around the fact that
+# the ps2 driver was not generating correct scancodes sequences
+# when 'alt+print' was pressed. This flaw is now fixed and the
+# 'sysrq' key serves no further purpose. Any further use of
+# 'sysrq' will be transparently changed to 'print', so they
+# are effectively synonyms.
+#
 # Since: 1.3.0
 #
 ##
diff --git a/ui/input-legacy.c b/ui/input-legacy.c
index 6bc3525499..c75aba1549 100644
--- a/ui/input-legacy.c
+++ b/ui/input-legacy.c
@@ -76,6 +76,11 @@ static KeyValue *copy_key_value(KeyValue *src)
 {
     KeyValue *dst = g_new(KeyValue, 1);
     memcpy(dst, src, sizeof(*src));
+    if (dst->type == KEY_VALUE_KIND_NUMBER) {
+        QKeyCode code = qemu_input_key_number_to_qcode(dst->u.number.data);
+        dst->type = KEY_VALUE_KIND_QCODE;
+        dst->u.qcode.data = code;
+    }
     return dst;
 }
 
diff --git a/ui/input.c b/ui/input.c
index 290b47354a..3e2d324278 100644
--- a/ui/input.c
+++ b/ui/input.c
@@ -162,7 +162,7 @@ void qmp_input_send_event(bool has_device, const char *device,
         if (evt->type == INPUT_EVENT_KIND_KEY &&
             evt->u.key.data->key->type == KEY_VALUE_KIND_NUMBER) {
             KeyValue *key = evt->u.key.data->key;
-            QKeyCode code = qemu_input_key_number_to_qcode(key->u.qcode.data);
+            QKeyCode code = qemu_input_key_number_to_qcode(key->u.number.data);
             qemu_input_event_send_key_qcode(con, code, evt->u.key.data->down);
         } else {
             qemu_input_event_send(con, evt);
@@ -353,6 +353,20 @@ void qemu_input_event_send(QemuConsole *src, InputEvent *evt)
     assert(!(evt->type == INPUT_EVENT_KIND_KEY &&
              evt->u.key.data->key->type == KEY_VALUE_KIND_NUMBER));
 
+
+    /*
+     * 'sysrq' was mistakenly added to hack around the fact that
+     * the ps2 driver was not generating correct scancodes sequences
+     * when 'alt+print' was pressed. This flaw is now fixed and the
+     * 'sysrq' key serves no further purpose. We normalize it to
+     * 'print', so that downstream receivers of the event don't
+     * neeed to deal with this mistake
+     */
+    if (evt->type == INPUT_EVENT_KIND_KEY &&
+        evt->u.key.data->key->u.qcode.data == Q_KEY_CODE_SYSRQ) {
+        evt->u.key.data->key->u.qcode.data = Q_KEY_CODE_PRINT;
+    }
+
     if (!runstate_is_running() && !runstate_check(RUN_STATE_SUSPENDED)) {
         return;
     }
diff --git a/ui/keycodemapdb b/ui/keycodemapdb
-Subproject 56ce5650d2c6ea216b4580df44b9a6dd3bc92c3
+Subproject 10739aa26051a5d49d88132604539d3ed085e72