IntelFrameworkModulePkg: Replace BSD License with BSD+Patent License

[mirror_edk2.git] / IntelFrameworkModulePkg / Bus / Isa / Ps2KeyboardDxe / Ps2KbdTextIn.c

diff --git a/IntelFrameworkModulePkg/Bus/Isa/Ps2KeyboardDxe/Ps2KbdTextIn.c b/IntelFrameworkModulePkg/Bus/Isa/Ps2KeyboardDxe/Ps2KbdTextIn.c
index 0efeb39e0da4249018154b52c933ba9c44822b5a..1d167d171c861184532e1bd2cd1d5045d0cdcab7 100644 (file)
--- a/IntelFrameworkModulePkg/Bus/Isa/Ps2KeyboardDxe/Ps2KbdTextIn.c
+++ b/IntelFrameworkModulePkg/Bus/Isa/Ps2KeyboardDxe/Ps2KbdTextIn.c
@@ -2,14 +2,8 @@
   Routines implements SIMPLE_TEXT_IN protocol's interfaces based on 8042 interfaces\r
   provided by Ps2KbdCtrller.c.\r
 \r
-Copyright (c) 2006 - 2012, Intel Corporation. All rights reserved.<BR>\r
-This program and the accompanying materials\r
-are licensed and made available under the terms and conditions of the BSD License\r
-which accompanies this distribution.  The full text of the license may be found at\r
-http://opensource.org/licenses/bsd-license.php\r
-\r
-THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,\r
-WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.\r
+Copyright (c) 2006 - 2018, Intel Corporation. All rights reserved.<BR>\r
+SPDX-License-Identifier: BSD-2-Clause-Patent\r
 \r
 **/\r
 \r
@@ -165,6 +159,10 @@ KeyboardReadKeyStrokeWorker (
     Status = EFI_DEVICE_ERROR;\r
   } else {\r
     Status = PopEfikeyBufHead (&ConsoleInDev->EfiKeyQueue, KeyData);\r
+    if (Status == EFI_NOT_READY) {\r
+      ZeroMem (&KeyData->Key, sizeof (KeyData->Key));\r
+      InitializeKeyState (ConsoleInDev, &KeyData->KeyState);\r
+    }\r
   }\r
 \r
   gBS->RestoreTPL (OldTpl);\r
@@ -268,7 +266,7 @@ KeyboardReadKeyStroke (
   EFI_KEY_DATA            KeyData;\r
 \r
   ConsoleIn = KEYBOARD_CONSOLE_IN_DEV_FROM_THIS (This);\r
-  \r
+\r
   //\r
   // Considering if the partial keystroke is enabled, there maybe a partial\r
   // keystroke in the queue, so here skip the partial keystroke and get the\r
@@ -533,9 +531,13 @@ Exit:
 \r
     @param This                       Protocol instance pointer.\r
     @param KeyData                    A pointer to a buffer that is filled in with the keystroke\r
-                                      information data for the key that was pressed.\r
+                                      information data for the key that was pressed. If KeyData.Key,\r
+                                      KeyData.KeyState.KeyToggleState and KeyData.KeyState.KeyShiftState\r
+                                      are 0, then any incomplete keystroke will trigger a notification of\r
+                                      the KeyNotificationFunction.\r
     @param KeyNotificationFunction    Points to the function to be called when the key\r
-                                      sequence is typed specified by KeyData.\r
+                                      sequence is typed specified by KeyData. This notification function\r
+                                      should be called at <=TPL_CALLBACK.\r
     @param NotifyHandle               Points to the unique handle assigned to the registered notification.\r
 \r
     @retval EFI_SUCCESS               The notification function was registered successfully.\r
@@ -681,3 +683,52 @@ Exit:
   return Status;\r
 }\r
 \r
+/**\r
+  Process key notify.\r
+\r
+  @param  Event                 Indicates the event that invoke this function.\r
+  @param  Context               Indicates the calling context.\r
+**/\r
+VOID\r
+EFIAPI\r
+KeyNotifyProcessHandler (\r
+  IN  EFI_EVENT                 Event,\r
+  IN  VOID                      *Context\r
+  )\r
+{\r
+  EFI_STATUS                    Status;\r
+  KEYBOARD_CONSOLE_IN_DEV       *ConsoleIn;\r
+  EFI_KEY_DATA                  KeyData;\r
+  LIST_ENTRY                    *Link;\r
+  LIST_ENTRY                    *NotifyList;\r
+  KEYBOARD_CONSOLE_IN_EX_NOTIFY *CurrentNotify;\r
+  EFI_TPL                       OldTpl;\r
+\r
+  ConsoleIn = (KEYBOARD_CONSOLE_IN_DEV *) Context;\r
+\r
+  //\r
+  // Invoke notification functions.\r
+  //\r
+  NotifyList = &ConsoleIn->NotifyList;\r
+  while (TRUE) {\r
+    //\r
+    // Enter critical section\r
+    //\r
+    OldTpl = gBS->RaiseTPL (TPL_NOTIFY);\r
+    Status = PopEfikeyBufHead (&ConsoleIn->EfiKeyQueueForNotify, &KeyData);\r
+    //\r
+    // Leave critical section\r
+    //\r
+    gBS->RestoreTPL (OldTpl);\r
+    if (EFI_ERROR (Status)) {\r
+      break;\r
+    }\r
+    for (Link = GetFirstNode (NotifyList); !IsNull (NotifyList, Link); Link = GetNextNode (NotifyList, Link)) {\r
+      CurrentNotify = CR (Link, KEYBOARD_CONSOLE_IN_EX_NOTIFY, NotifyEntry, KEYBOARD_CONSOLE_IN_EX_NOTIFY_SIGNATURE);\r
+      if (IsKeyRegistered (&CurrentNotify->KeyData, &KeyData)) {\r
+        CurrentNotify->KeyNotificationFn (&KeyData);\r
+      }\r
+    }\r
+  }\r
+}\r
+\r