--- /dev/null
+/** @file\r
+\r
+Copyright (c) 2006, Intel Corporation\r
+All rights reserved. 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
+\r
+Module Name:\r
+\r
+ WinNtGopInput.c\r
+\r
+Abstract:\r
+\r
+ This file produces the Simple Text In for an Gop window.\r
+\r
+ This stuff is linked at the hip to the Window, since the window\r
+ processing is done in a thread kicked off in WinNtGopImplementation.c\r
+\r
+ Since the window information is processed in an other thread we need\r
+ a keyboard Queue to pass data about. The Simple Text In code just\r
+ takes data off the Queue. The WinProc message loop takes keyboard input\r
+ and places it in the Queue.\r
+\r
+\r
+**/\r
+\r
+//\r
+// The package level header files this module uses\r
+//\r
+#include <Uefi.h>\r
+#include <WinNtDxe.h>\r
+//\r
+// The protocols, PPI and GUID defintions for this module\r
+//\r
+#include <Guid/EventGroup.h>\r
+#include <Protocol/WinNtIo.h>\r
+#include <Protocol/ComponentName.h>\r
+#include <Protocol/SimpleTextIn.h>\r
+#include <Protocol/DriverBinding.h>\r
+#include <Protocol/GraphicsOutput.h>\r
+//\r
+// The Library classes this module consumes\r
+//\r
+#include <Library/DebugLib.h>\r
+#include <Library/BaseLib.h>\r
+#include <Library/UefiDriverEntryPoint.h>\r
+#include <Library/UefiLib.h>\r
+#include <Library/BaseMemoryLib.h>\r
+#include <Library/UefiBootServicesTableLib.h>\r
+#include <Library/MemoryAllocationLib.h>\r
+\r
+#include "WinNtGop.h"\r
+\r
+\r
+/**\r
+ TODO: Add function description\r
+\r
+ @param Private TODO: add argument description\r
+\r
+ @retval EFI_SUCCESS TODO: Add description for return value\r
+\r
+**/\r
+EFI_STATUS\r
+GopPrivateCreateQ (\r
+ IN GOP_PRIVATE_DATA *Private\r
+ )\r
+{\r
+ Private->WinNtThunk->InitializeCriticalSection (&Private->QCriticalSection);\r
+\r
+ Private->Queue.Front = 0;\r
+ Private->Queue.Rear = MAX_Q - 1;\r
+ Private->Queue.Count = 0;\r
+ return EFI_SUCCESS;\r
+}\r
+\r
+\r
+/**\r
+ TODO: Add function description\r
+\r
+ @param Private TODO: add argument description\r
+\r
+ @retval EFI_SUCCESS TODO: Add description for return value\r
+\r
+**/\r
+EFI_STATUS\r
+GopPrivateDestroyQ (\r
+ IN GOP_PRIVATE_DATA *Private\r
+ )\r
+{\r
+ Private->Queue.Count = 0;\r
+ Private->WinNtThunk->DeleteCriticalSection (&Private->QCriticalSection);\r
+ return EFI_SUCCESS;\r
+}\r
+\r
+\r
+/**\r
+ TODO: Add function description\r
+\r
+ @param Private TODO: add argument description\r
+ @param Key TODO: add argument description\r
+\r
+ @retval EFI_NOT_READY TODO: Add description for return value\r
+ @retval EFI_SUCCESS TODO: Add description for return value\r
+\r
+**/\r
+EFI_STATUS\r
+GopPrivateAddQ (\r
+ IN GOP_PRIVATE_DATA *Private,\r
+ IN EFI_INPUT_KEY Key\r
+ )\r
+{\r
+ Private->WinNtThunk->EnterCriticalSection (&Private->QCriticalSection);\r
+\r
+ if (Private->Queue.Count == MAX_Q) {\r
+ Private->WinNtThunk->LeaveCriticalSection (&Private->QCriticalSection);\r
+ return EFI_NOT_READY;\r
+ }\r
+\r
+ Private->Queue.Rear = (Private->Queue.Rear + 1) % MAX_Q;\r
+ Private->Queue.Q[Private->Queue.Rear] = Key;\r
+ Private->Queue.Count++;\r
+\r
+ Private->WinNtThunk->LeaveCriticalSection (&Private->QCriticalSection);\r
+ return EFI_SUCCESS;\r
+}\r
+\r
+\r
+/**\r
+ TODO: Add function description\r
+\r
+ @param Private TODO: add argument description\r
+ @param Key TODO: add argument description\r
+\r
+ @retval EFI_NOT_READY TODO: Add description for return value\r
+ @retval EFI_SUCCESS TODO: Add description for return value\r
+\r
+**/\r
+EFI_STATUS\r
+GopPrivateDeleteQ (\r
+ IN GOP_PRIVATE_DATA *Private,\r
+ OUT EFI_INPUT_KEY *Key\r
+ )\r
+{\r
+ Private->WinNtThunk->EnterCriticalSection (&Private->QCriticalSection);\r
+\r
+ if (Private->Queue.Count == 0) {\r
+ Private->WinNtThunk->LeaveCriticalSection (&Private->QCriticalSection);\r
+ return EFI_NOT_READY;\r
+ }\r
+\r
+ *Key = Private->Queue.Q[Private->Queue.Front];\r
+ Private->Queue.Front = (Private->Queue.Front + 1) % MAX_Q;\r
+ Private->Queue.Count--;\r
+\r
+ Private->WinNtThunk->LeaveCriticalSection (&Private->QCriticalSection);\r
+ return EFI_SUCCESS;\r
+}\r
+\r
+\r
+/**\r
+ TODO: Add function description\r
+\r
+ @param Private TODO: add argument description\r
+\r
+ @retval EFI_NOT_READY TODO: Add description for return value\r
+ @retval EFI_SUCCESS TODO: Add description for return value\r
+\r
+**/\r
+EFI_STATUS\r
+GopPrivateCheckQ (\r
+ IN GOP_PRIVATE_DATA *Private\r
+ )\r
+{\r
+ if (Private->Queue.Count == 0) {\r
+ return EFI_NOT_READY;\r
+ }\r
+\r
+ return EFI_SUCCESS;\r
+}\r
+\r
+//\r
+// Simple Text In implementation.\r
+//\r
+\r
+\r
+/**\r
+ TODO: Add function description\r
+\r
+ @param This TODO: add argument description\r
+ @param ExtendedVerification TODO: add argument description\r
+\r
+ @retval EFI_SUCCESS TODO: Add description for return value\r
+\r
+**/\r
+EFI_STATUS\r
+EFIAPI\r
+WinNtGopSimpleTextInReset (\r
+ IN EFI_SIMPLE_TEXT_INPUT_PROTOCOL *This,\r
+ IN BOOLEAN ExtendedVerification\r
+ )\r
+{\r
+ GOP_PRIVATE_DATA *Private;\r
+ EFI_INPUT_KEY Key;\r
+ EFI_TPL OldTpl;\r
+\r
+ Private = GOP_PRIVATE_DATA_FROM_TEXT_IN_THIS (This);\r
+\r
+ //\r
+ // Enter critical section\r
+ //\r
+ OldTpl = gBS->RaiseTPL (TPL_NOTIFY);\r
+\r
+ //\r
+ // A reset is draining the Queue\r
+ //\r
+ while (GopPrivateDeleteQ (Private, &Key) == EFI_SUCCESS)\r
+ ;\r
+\r
+ //\r
+ // Leave critical section and return\r
+ //\r
+ gBS->RestoreTPL (OldTpl);\r
+ return EFI_SUCCESS;\r
+}\r
+\r
+\r
+/**\r
+ TODO: Add function description\r
+\r
+ @param This TODO: add argument description\r
+ @param Key TODO: add argument description\r
+\r
+ @return TODO: add return values\r
+\r
+**/\r
+STATIC\r
+EFI_STATUS\r
+EFIAPI\r
+WinNtGopSimpleTextInReadKeyStroke (\r
+ IN EFI_SIMPLE_TEXT_INPUT_PROTOCOL *This,\r
+ OUT EFI_INPUT_KEY *Key\r
+ )\r
+{\r
+ GOP_PRIVATE_DATA *Private;\r
+ EFI_STATUS Status;\r
+ EFI_TPL OldTpl;\r
+\r
+ Private = GOP_PRIVATE_DATA_FROM_TEXT_IN_THIS (This);\r
+\r
+ //\r
+ // Enter critical section\r
+ //\r
+ OldTpl = gBS->RaiseTPL (TPL_NOTIFY);\r
+\r
+ Status = GopPrivateCheckQ (Private);\r
+ if (!EFI_ERROR (Status)) {\r
+ //\r
+ // If a Key press exists try and read it.\r
+ //\r
+ Status = GopPrivateDeleteQ (Private, Key);\r
+ }\r
+\r
+ //\r
+ // Leave critical section and return\r
+ //\r
+ gBS->RestoreTPL (OldTpl);\r
+\r
+ return Status;\r
+}\r
+\r
+\r
+/**\r
+ TODO: Add function description\r
+\r
+ @param Event TODO: add argument description\r
+ @param Context TODO: add argument description\r
+\r
+ @return TODO: add return values\r
+\r
+**/\r
+STATIC\r
+VOID\r
+EFIAPI\r
+WinNtGopSimpleTextInWaitForKey (\r
+ IN EFI_EVENT Event,\r
+ IN VOID *Context\r
+ )\r
+{\r
+ GOP_PRIVATE_DATA *Private;\r
+ EFI_STATUS Status;\r
+ EFI_TPL OldTpl;\r
+\r
+ Private = (GOP_PRIVATE_DATA *) Context;\r
+\r
+ //\r
+ // Enter critical section\r
+ //\r
+ OldTpl = gBS->RaiseTPL (TPL_NOTIFY);\r
+\r
+ Status = GopPrivateCheckQ (Private);\r
+ if (!EFI_ERROR (Status)) {\r
+ //\r
+ // If a there is a key in the queue signal our event.\r
+ //\r
+ gBS->SignalEvent (Event);\r
+ } else {\r
+ //\r
+ // We need to sleep or NT will schedule this thread with such high\r
+ // priority that WinProc thread will never run and we will not see\r
+ // keyboard input. This Sleep makes the syste run 10x faster, so don't\r
+ // remove it.\r
+ //\r
+ Private->WinNtThunk->Sleep (1);\r
+ }\r
+\r
+ //\r
+ // Leave critical section and return\r
+ //\r
+ gBS->RestoreTPL (OldTpl);\r
+}\r
+\r
+\r
+/**\r
+ TODO: Add function description\r
+\r
+ @param Private TODO: add argument description\r
+\r
+ @return TODO: add return values\r
+\r
+**/\r
+EFI_STATUS\r
+WinNtGopInitializeSimpleTextInForWindow (\r
+ IN GOP_PRIVATE_DATA *Private\r
+ )\r
+{\r
+ EFI_STATUS Status;\r
+\r
+ GopPrivateCreateQ (Private);\r
+\r
+ //\r
+ // Initialize Simple Text In protoocol\r
+ //\r
+ Private->SimpleTextIn.Reset = WinNtGopSimpleTextInReset;\r
+ Private->SimpleTextIn.ReadKeyStroke = WinNtGopSimpleTextInReadKeyStroke;\r
+\r
+ Status = gBS->CreateEvent (\r
+ EVT_NOTIFY_WAIT,\r
+ TPL_NOTIFY,\r
+ WinNtGopSimpleTextInWaitForKey,\r
+ Private,\r
+ &Private->SimpleTextIn.WaitForKey\r
+ );\r
+\r
+ return Status;\r
+}\r
+\r
+\r
+/**\r
+ TODO: Add function description\r
+\r
+ @param Private TODO: add argument description\r
+\r
+ @retval EFI_SUCCESS TODO: Add description for return value\r
+\r
+**/\r
+EFI_STATUS\r
+WinNtGopDestroySimpleTextInForWindow (\r
+ IN GOP_PRIVATE_DATA *Private\r
+ )\r
+{\r
+ GopPrivateDestroyQ (Private);\r
+ return EFI_SUCCESS;\r
+}\r
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