diff options
Diffstat (limited to 'EdkNt32Pkg/Dxe/WinNtThunk/Bus/Gop/WinNtGopInput.c')
| -rw-r--r-- | EdkNt32Pkg/Dxe/WinNtThunk/Bus/Gop/WinNtGopInput.c | 352 |
1 files changed, 352 insertions, 0 deletions
diff --git a/EdkNt32Pkg/Dxe/WinNtThunk/Bus/Gop/WinNtGopInput.c b/EdkNt32Pkg/Dxe/WinNtThunk/Bus/Gop/WinNtGopInput.c new file mode 100644 index 0000000000..77006af74e --- /dev/null +++ b/EdkNt32Pkg/Dxe/WinNtThunk/Bus/Gop/WinNtGopInput.c @@ -0,0 +1,352 @@ +/** @file + +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: + + WinNtGopInput.c + +Abstract: + + This file produces the Simple Text In for an Gop window. + + This stuff is linked at the hip to the Window, since the window + processing is done in a thread kicked off in WinNtGopImplementation.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 "WinNtGop.h" + + +/** + TODO: Add function description + + @param Private TODO: add argument description + + @retval EFI_SUCCESS TODO: Add description for return value + +**/ +EFI_STATUS +GopPrivateCreateQ ( + IN GOP_PRIVATE_DATA *Private + ) +{ + Private->WinNtThunk->InitializeCriticalSection (&Private->QCriticalSection); + + Private->Queue.Front = 0; + Private->Queue.Rear = MAX_Q - 1; + Private->Queue.Count = 0; + return EFI_SUCCESS; +} + + +/** + TODO: Add function description + + @param Private TODO: add argument description + + @retval EFI_SUCCESS TODO: Add description for return value + +**/ +EFI_STATUS +GopPrivateDestroyQ ( + IN GOP_PRIVATE_DATA *Private + ) +{ + Private->Queue.Count = 0; + Private->WinNtThunk->DeleteCriticalSection (&Private->QCriticalSection); + return EFI_SUCCESS; +} + + +/** + TODO: Add function description + + @param Private TODO: add argument description + @param Key TODO: add argument description + + @retval EFI_NOT_READY TODO: Add description for return value + @retval EFI_SUCCESS TODO: Add description for return value + +**/ +EFI_STATUS +GopPrivateAddQ ( + IN GOP_PRIVATE_DATA *Private, + IN EFI_INPUT_KEY Key + ) +{ + 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; +} + + +/** + TODO: Add function description + + @param Private TODO: add argument description + @param Key TODO: add argument description + + @retval EFI_NOT_READY TODO: Add description for return value + @retval EFI_SUCCESS TODO: Add description for return value + +**/ +EFI_STATUS +GopPrivateDeleteQ ( + IN GOP_PRIVATE_DATA *Private, + OUT EFI_INPUT_KEY *Key + ) +{ + 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; +} + + +/** + TODO: Add function description + + @param Private TODO: add argument description + + @retval EFI_NOT_READY TODO: Add description for return value + @retval EFI_SUCCESS TODO: Add description for return value + +**/ +EFI_STATUS +GopPrivateCheckQ ( + IN GOP_PRIVATE_DATA *Private + ) +{ + if (Private->Queue.Count == 0) { + return EFI_NOT_READY; + } + + return EFI_SUCCESS; +} + +// +// Simple Text In implementation. +// + + +/** + TODO: Add function description + + @param This TODO: add argument description + @param ExtendedVerification TODO: add argument description + + @retval EFI_SUCCESS TODO: Add description for return value + +**/ +EFI_STATUS +EFIAPI +WinNtGopSimpleTextInReset ( + IN EFI_SIMPLE_TEXT_INPUT_PROTOCOL *This, + IN BOOLEAN ExtendedVerification + ) +{ + GOP_PRIVATE_DATA *Private; + EFI_INPUT_KEY Key; + EFI_TPL OldTpl; + + Private = GOP_PRIVATE_DATA_FROM_TEXT_IN_THIS (This); + + // + // Enter critical section + // + OldTpl = gBS->RaiseTPL (TPL_NOTIFY); + + // + // A reset is draining the Queue + // + while (GopPrivateDeleteQ (Private, &Key) == EFI_SUCCESS) + ; + + // + // Leave critical section and return + // + gBS->RestoreTPL (OldTpl); + return EFI_SUCCESS; +} + + +/** + TODO: Add function description + + @param This TODO: add argument description + @param Key TODO: add argument description + + @return TODO: add return values + +**/ +STATIC +EFI_STATUS +EFIAPI +WinNtGopSimpleTextInReadKeyStroke ( + IN EFI_SIMPLE_TEXT_INPUT_PROTOCOL *This, + OUT EFI_INPUT_KEY *Key + ) +{ + GOP_PRIVATE_DATA *Private; + EFI_STATUS Status; + EFI_TPL OldTpl; + + Private = GOP_PRIVATE_DATA_FROM_TEXT_IN_THIS (This); + + // + // Enter critical section + // + OldTpl = gBS->RaiseTPL (TPL_NOTIFY); + + Status = GopPrivateCheckQ (Private); + if (!EFI_ERROR (Status)) { + // + // If a Key press exists try and read it. + // + Status = GopPrivateDeleteQ (Private, Key); + } + + // + // Leave critical section and return + // + gBS->RestoreTPL (OldTpl); + + return Status; +} + + +/** + TODO: Add function description + + @param Event TODO: add argument description + @param Context TODO: add argument description + + @return TODO: add return values + +**/ +STATIC +VOID +EFIAPI +WinNtGopSimpleTextInWaitForKey ( + IN EFI_EVENT Event, + IN VOID *Context + ) +{ + GOP_PRIVATE_DATA *Private; + EFI_STATUS Status; + EFI_TPL OldTpl; + + Private = (GOP_PRIVATE_DATA *) Context; + + // + // Enter critical section + // + OldTpl = gBS->RaiseTPL (TPL_NOTIFY); + + Status = GopPrivateCheckQ (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); +} + + +/** + TODO: Add function description + + @param Private TODO: add argument description + + @return TODO: add return values + +**/ +EFI_STATUS +WinNtGopInitializeSimpleTextInForWindow ( + IN GOP_PRIVATE_DATA *Private + ) +{ + EFI_STATUS Status; + + GopPrivateCreateQ (Private); + + // + // Initialize Simple Text In protoocol + // + Private->SimpleTextIn.Reset = WinNtGopSimpleTextInReset; + Private->SimpleTextIn.ReadKeyStroke = WinNtGopSimpleTextInReadKeyStroke; + + Status = gBS->CreateEvent ( + EVENT_NOTIFY_WAIT, + TPL_NOTIFY, + WinNtGopSimpleTextInWaitForKey, + Private, + &Private->SimpleTextIn.WaitForKey + ); + + return Status; +} + + +/** + TODO: Add function description + + @param Private TODO: add argument description + + @retval EFI_SUCCESS TODO: Add description for return value + +**/ +EFI_STATUS +WinNtGopDestroySimpleTextInForWindow ( + IN GOP_PRIVATE_DATA *Private + ) +{ + GopPrivateDestroyQ (Private); + return EFI_SUCCESS; +} |