diff options
Diffstat (limited to 'EdkNt32Pkg/Dxe/WinNtThunk/Bus/Uga/WinNtUgaInput.c')
| -rw-r--r-- | EdkNt32Pkg/Dxe/WinNtThunk/Bus/Uga/WinNtUgaInput.c | 411 |
1 files changed, 411 insertions, 0 deletions
diff --git a/EdkNt32Pkg/Dxe/WinNtThunk/Bus/Uga/WinNtUgaInput.c b/EdkNt32Pkg/Dxe/WinNtThunk/Bus/Uga/WinNtUgaInput.c new file mode 100644 index 0000000000..19bca36359 --- /dev/null +++ b/EdkNt32Pkg/Dxe/WinNtThunk/Bus/Uga/WinNtUgaInput.c @@ -0,0 +1,411 @@ +/*++
+
+Copyright (c) 2006, Intel Corporation
+All rights reserved. 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
+http://opensource.org/licenses/bsd-license.php
+
+THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
+WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
+
+Module Name:
+
+ WinNtUgaInput.c
+
+Abstract:
+
+ This file produces the Simple Text In for an Uga window.
+
+ This stuff is linked at the hip to the Window, since the window
+ processing is done in a thread kicked off in WinNtUgaImplementation.c
+
+ Since the window information is processed in an other thread we need
+ a keyboard Queue to pass data about. The Simple Text In code just
+ takes data off the Queue. The WinProc message loop takes keyboard input
+ and places it in the Queue.
+
+--*/
+
+#include "WinNtUga.h"
+
+EFI_STATUS
+UgaPrivateCreateQ (
+ IN UGA_PRIVATE_DATA *Private
+ )
+/*++
+
+Routine Description:
+
+ TODO: Add function description
+
+Arguments:
+
+ Private - TODO: add argument description
+
+Returns:
+
+ EFI_SUCCESS - TODO: Add description for return value
+
+--*/
+{
+ Private->WinNtThunk->InitializeCriticalSection (&Private->QCriticalSection);
+
+ Private->Queue.Front = 0;
+ Private->Queue.Rear = MAX_Q - 1;
+ Private->Queue.Count = 0;
+ return EFI_SUCCESS;
+}
+
+EFI_STATUS
+UgaPrivateDestroyQ (
+ IN UGA_PRIVATE_DATA *Private
+ )
+/*++
+
+Routine Description:
+
+ TODO: Add function description
+
+Arguments:
+
+ Private - TODO: add argument description
+
+Returns:
+
+ EFI_SUCCESS - TODO: Add description for return value
+
+--*/
+{
+ Private->Queue.Count = 0;
+ Private->WinNtThunk->DeleteCriticalSection (&Private->QCriticalSection);
+ return EFI_SUCCESS;
+}
+
+EFI_STATUS
+UgaPrivateAddQ (
+ IN UGA_PRIVATE_DATA *Private,
+ IN EFI_INPUT_KEY Key
+ )
+/*++
+
+Routine Description:
+
+ TODO: Add function description
+
+Arguments:
+
+ Private - TODO: add argument description
+ Key - TODO: add argument description
+
+Returns:
+
+ EFI_NOT_READY - TODO: Add description for return value
+ EFI_SUCCESS - TODO: Add description for return value
+
+--*/
+{
+ Private->WinNtThunk->EnterCriticalSection (&Private->QCriticalSection);
+
+ if (Private->Queue.Count == MAX_Q) {
+ Private->WinNtThunk->LeaveCriticalSection (&Private->QCriticalSection);
+ return EFI_NOT_READY;
+ }
+
+ Private->Queue.Rear = (Private->Queue.Rear + 1) % MAX_Q;
+ Private->Queue.Q[Private->Queue.Rear] = Key;
+ Private->Queue.Count++;
+
+ Private->WinNtThunk->LeaveCriticalSection (&Private->QCriticalSection);
+ return EFI_SUCCESS;
+}
+
+EFI_STATUS
+UgaPrivateDeleteQ (
+ IN UGA_PRIVATE_DATA *Private,
+ OUT EFI_INPUT_KEY *Key
+ )
+/*++
+
+Routine Description:
+
+ TODO: Add function description
+
+Arguments:
+
+ Private - TODO: add argument description
+ Key - TODO: add argument description
+
+Returns:
+
+ EFI_NOT_READY - TODO: Add description for return value
+ EFI_SUCCESS - TODO: Add description for return value
+
+--*/
+{
+ Private->WinNtThunk->EnterCriticalSection (&Private->QCriticalSection);
+
+ if (Private->Queue.Count == 0) {
+ Private->WinNtThunk->LeaveCriticalSection (&Private->QCriticalSection);
+ return EFI_NOT_READY;
+ }
+
+ *Key = Private->Queue.Q[Private->Queue.Front];
+ Private->Queue.Front = (Private->Queue.Front + 1) % MAX_Q;
+ Private->Queue.Count--;
+
+ Private->WinNtThunk->LeaveCriticalSection (&Private->QCriticalSection);
+ return EFI_SUCCESS;
+}
+
+EFI_STATUS
+UgaPrivateCheckQ (
+ IN UGA_PRIVATE_DATA *Private
+ )
+/*++
+
+Routine Description:
+
+ TODO: Add function description
+
+Arguments:
+
+ Private - TODO: add argument description
+
+Returns:
+
+ EFI_NOT_READY - TODO: Add description for return value
+ EFI_SUCCESS - TODO: Add description for return value
+
+--*/
+{
+ if (Private->Queue.Count == 0) {
+ return EFI_NOT_READY;
+ }
+
+ return EFI_SUCCESS;
+}
+
+//
+// Simple Text In implementation.
+//
+
+EFI_STATUS
+EFIAPI
+WinNtUgaSimpleTextInReset (
+ IN EFI_SIMPLE_TEXT_IN_PROTOCOL *This,
+ IN BOOLEAN ExtendedVerification
+ )
+/*++
+
+Routine Description:
+
+ TODO: Add function description
+
+Arguments:
+
+ This - TODO: add argument description
+ ExtendedVerification - TODO: add argument description
+
+Returns:
+
+ EFI_SUCCESS - TODO: Add description for return value
+
+--*/
+{
+ UGA_PRIVATE_DATA *Private;
+ EFI_INPUT_KEY Key;
+ EFI_TPL OldTpl;
+
+ Private = UGA_PRIVATE_DATA_FROM_TEXT_IN_THIS (This);
+
+ //
+ // Enter critical section
+ //
+ OldTpl = gBS->RaiseTPL (EFI_TPL_NOTIFY);
+
+ //
+ // A reset is draining the Queue
+ //
+ while (UgaPrivateDeleteQ (Private, &Key) == EFI_SUCCESS)
+ ;
+
+ //
+ // Leave critical section and return
+ //
+ gBS->RestoreTPL (OldTpl);
+ return EFI_SUCCESS;
+}
+
+STATIC
+EFI_STATUS
+EFIAPI
+WinNtUgaSimpleTextInReadKeyStroke (
+ IN EFI_SIMPLE_TEXT_IN_PROTOCOL *This,
+ OUT EFI_INPUT_KEY *Key
+ )
+/*++
+
+Routine Description:
+
+ TODO: Add function description
+
+Arguments:
+
+ This - TODO: add argument description
+ Key - TODO: add argument description
+
+Returns:
+
+ TODO: add return values
+
+--*/
+{
+ UGA_PRIVATE_DATA *Private;
+ EFI_STATUS Status;
+ EFI_TPL OldTpl;
+
+ Private = UGA_PRIVATE_DATA_FROM_TEXT_IN_THIS (This);
+
+ //
+ // Enter critical section
+ //
+ OldTpl = gBS->RaiseTPL (EFI_TPL_NOTIFY);
+
+ Status = UgaPrivateCheckQ (Private);
+ if (!EFI_ERROR (Status)) {
+ //
+ // If a Key press exists try and read it.
+ //
+ Status = UgaPrivateDeleteQ (Private, Key);
+ }
+
+ //
+ // Leave critical section and return
+ //
+ gBS->RestoreTPL (OldTpl);
+
+ return Status;
+}
+
+STATIC
+VOID
+EFIAPI
+WinNtUgaSimpleTextInWaitForKey (
+ IN EFI_EVENT Event,
+ IN VOID *Context
+ )
+/*++
+
+Routine Description:
+
+ TODO: Add function description
+
+Arguments:
+
+ Event - TODO: add argument description
+ Context - TODO: add argument description
+
+Returns:
+
+ TODO: add return values
+
+--*/
+{
+ UGA_PRIVATE_DATA *Private;
+ EFI_STATUS Status;
+ EFI_TPL OldTpl;
+
+ Private = (UGA_PRIVATE_DATA *) Context;
+
+ //
+ // Enter critical section
+ //
+ OldTpl = gBS->RaiseTPL (EFI_TPL_NOTIFY);
+
+ Status = UgaPrivateCheckQ (Private);
+ if (!EFI_ERROR (Status)) {
+ //
+ // If a there is a key in the queue signal our event.
+ //
+ gBS->SignalEvent (Event);
+ } else {
+ //
+ // We need to sleep or NT will schedule this thread with such high
+ // priority that WinProc thread will never run and we will not see
+ // keyboard input. This Sleep makes the syste run 10x faster, so don't
+ // remove it.
+ //
+ Private->WinNtThunk->Sleep (1);
+ }
+
+ //
+ // Leave critical section and return
+ //
+ gBS->RestoreTPL (OldTpl);
+}
+
+EFI_STATUS
+WinNtUgaInitializeSimpleTextInForWindow (
+ IN UGA_PRIVATE_DATA *Private
+ )
+/*++
+
+Routine Description:
+
+ TODO: Add function description
+
+Arguments:
+
+ Private - TODO: add argument description
+
+Returns:
+
+ TODO: add return values
+
+--*/
+{
+ EFI_STATUS Status;
+
+ UgaPrivateCreateQ (Private);
+
+ //
+ // Initialize Simple Text In protoocol
+ //
+ Private->SimpleTextIn.Reset = WinNtUgaSimpleTextInReset;
+ Private->SimpleTextIn.ReadKeyStroke = WinNtUgaSimpleTextInReadKeyStroke;
+
+ Status = gBS->CreateEvent (
+ EFI_EVENT_NOTIFY_WAIT,
+ EFI_TPL_NOTIFY,
+ WinNtUgaSimpleTextInWaitForKey,
+ Private,
+ &Private->SimpleTextIn.WaitForKey
+ );
+
+ return Status;
+}
+
+EFI_STATUS
+WinNtUgaDestroySimpleTextInForWindow (
+ IN UGA_PRIVATE_DATA *Private
+ )
+/*++
+
+Routine Description:
+
+ TODO: Add function description
+
+Arguments:
+
+ Private - TODO: add argument description
+
+Returns:
+
+ EFI_SUCCESS - TODO: Add description for return value
+
+--*/
+{
+ UgaPrivateDestroyQ (Private);
+ return EFI_SUCCESS;
+}
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