X-Git-Url: https://git.proxmox.com/?p=mirror_edk2.git;a=blobdiff_plain;f=MdeModulePkg%2FBus%2FIsa%2FPs2KeyboardDxe%2FPs2KbdTextIn.c;h=04e3365f9e6d8533b28c4002c19fb86d257e66d0;hp=f6ccd9598fb0b0e7d98043c85f4a59b891f9d8e8;hb=b4e96b82b4e2e47e95014b51787ba5b43abac784;hpb=4aa68cbc97e06d93a82189ade1317104f95535c1

diff --git a/MdeModulePkg/Bus/Isa/Ps2KeyboardDxe/Ps2KbdTextIn.c b/MdeModulePkg/Bus/Isa/Ps2KeyboardDxe/Ps2KbdTextIn.c
index f6ccd9598f..04e3365f9e 100644
--- a/MdeModulePkg/Bus/Isa/Ps2KeyboardDxe/Ps2KbdTextIn.c
+++ b/MdeModulePkg/Bus/Isa/Ps2KeyboardDxe/Ps2KbdTextIn.c
@@ -2,7 +2,7 @@
   Routines implements SIMPLE_TEXT_IN protocol's interfaces based on 8042 interfaces
   provided by Ps2KbdCtrller.c.
 
-Copyright (c) 2006 - 2016, Intel Corporation. All rights reserved.<BR>
+Copyright (c) 2006 - 2017, Intel Corporation. All rights reserved.<BR>
 This program and the accompanying materials
 are licensed and made available under the terms and conditions of the BSD License
 which accompanies this distribution.  The full text of the license may be found at
@@ -533,9 +533,12 @@ Exit:
 
     @param This                       Protocol instance pointer.
     @param KeyData                    A pointer to a buffer that is filled in with the keystroke
-                                      information data for the key that was pressed.
+                                      information data for the key that was pressed. If KeyData.Key,
+                                      KeyData.KeyState.KeyToggleState and KeyData.KeyState.KeyShiftState are 0,
+                                      then any incomplete keystroke will trigger a notification of the KeyNotificationFunction.
     @param KeyNotificationFunction    Points to the function to be called when the key
-                                      sequence is typed specified by KeyData.
+                                      sequence is typed specified by KeyData. This notification function
+                                      should be called at <=TPL_CALLBACK.
     @param NotifyHandle               Points to the unique handle assigned to the registered notification.
 
     @retval EFI_SUCCESS               The notification function was registered successfully.
@@ -681,3 +684,52 @@ Exit:
   return Status;
 }
 
+/**
+  Process key notify.
+
+  @param  Event                 Indicates the event that invoke this function.
+  @param  Context               Indicates the calling context.
+**/
+VOID
+EFIAPI
+KeyNotifyProcessHandler (
+  IN  EFI_EVENT                 Event,
+  IN  VOID                      *Context
+  )
+{
+  EFI_STATUS                    Status;
+  KEYBOARD_CONSOLE_IN_DEV       *ConsoleIn;
+  EFI_KEY_DATA                  KeyData;
+  LIST_ENTRY                    *Link;
+  LIST_ENTRY                    *NotifyList;
+  KEYBOARD_CONSOLE_IN_EX_NOTIFY *CurrentNotify;
+  EFI_TPL                       OldTpl;
+
+  ConsoleIn = (KEYBOARD_CONSOLE_IN_DEV *) Context;
+
+  //
+  // Invoke notification functions.
+  //
+  NotifyList = &ConsoleIn->NotifyList;
+  while (TRUE) {
+    //
+    // Enter critical section
+    //  
+    OldTpl = gBS->RaiseTPL (TPL_NOTIFY);
+    Status = PopEfikeyBufHead (&ConsoleIn->EfiKeyQueueForNotify, &KeyData);
+    //
+    // Leave critical section
+    //
+    gBS->RestoreTPL (OldTpl);
+    if (EFI_ERROR (Status)) {
+      break;
+    }
+    for (Link = GetFirstNode (NotifyList); !IsNull (NotifyList, Link); Link = GetNextNode (NotifyList, Link)) {
+      CurrentNotify = CR (Link, KEYBOARD_CONSOLE_IN_EX_NOTIFY, NotifyEntry, KEYBOARD_CONSOLE_IN_EX_NOTIFY_SIGNATURE);
+      if (IsKeyRegistered (&CurrentNotify->KeyData, &KeyData)) {
+        CurrentNotify->KeyNotificationFn (&KeyData);
+      }
+    }
+  }
+}
+