/**
TODO: Add function description
@param Event TODO: add argument description
@param Context TODO: add argument description
@return TODO: add return values
**/
VOID
EFIAPI
WinNtGopSimpleTextInWaitForKey (
IN EFI_EVENT Event,
IN VOID *Context
)
{
GOP_PRIVATE_DATA *Private;
EFI_STATUS Status;
EFI_TPL OldTpl;
EFI_KEY_DATA KeyData;
Private = (GOP_PRIVATE_DATA *) Context;
//
// Enter critical section
//
OldTpl = gBS->RaiseTPL (TPL_NOTIFY);
//
// Call hot key callback before telling caller there is a key available
//
WinNtGopSimpleTextInTimerHandler (NULL, Private);
//
// WaitforKey doesn't suppor the partial key.
// Considering if the partial keystroke is enabled, there maybe a partial
// keystroke in the queue, so here skip the partial keystroke and get the
// next key from the queue
//
while (1) {
Status = GopPrivateCheckQ (&Private->QueueForRead);
if (!EFI_ERROR (Status)) {
//
// If a there is a key in the queue and it is not partial keystroke, signal event.
//
if (Private->QueueForRead.Q[Private->QueueForRead.Front].Key.ScanCode == SCAN_NULL &&
Private->QueueForRead.Q[Private->QueueForRead.Front].Key.UnicodeChar == CHAR_NULL) {
GopPrivateDeleteQ (Private,&Private->QueueForRead,&KeyData);
continue;
}
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);
}
break;
}
//
// Leave critical section and return
//
gBS->RestoreTPL (OldTpl);
}
VOID
WinNtGopSimpleTextInTimerHandler (
IN EFI_EVENT Event,
IN VOID *Context
)
{
GOP_PRIVATE_DATA *Private;
EFI_KEY_DATA KeyData;
Private = (GOP_PRIVATE_DATA *)Context;
while (GopPrivateDeleteQ (Private, &Private->QueueForNotify, &KeyData) == EFI_SUCCESS) {
GopPrivateInvokeRegisteredFunction (Private, &KeyData);
}
}
STATIC
EFI_STATUS
GopPrivateReadKeyStrokeWorker (
IN GOP_PRIVATE_DATA *Private,
OUT EFI_KEY_DATA *KeyData
)
/*++
Routine Description:
Reads the next keystroke from the input device. The WaitForKey Event can
be used to test for existance of a keystroke via WaitForEvent () call.
Arguments:
Private - The private structure of WinNt Gop device.
KeyData - A pointer to a buffer that is filled in with the keystroke
state data for the key that was pressed.
Returns:
EFI_SUCCESS - The keystroke information was returned.
EFI_NOT_READY - There was no keystroke data availiable.
EFI_DEVICE_ERROR - The keystroke information was not returned due to
hardware errors.
EFI_INVALID_PARAMETER - KeyData is NULL.
--*/
{
EFI_STATUS Status;
EFI_TPL OldTpl;
if (KeyData == NULL) {
return EFI_INVALID_PARAMETER;
}
//
// Enter critical section
//
OldTpl = gBS->RaiseTPL (EFI_TPL_NOTIFY);
Status = GopPrivateCheckQ (Private);
if (!EFI_ERROR (Status)) {
//
// If a Key press exists try and read it.
//
Status = GopPrivateDeleteQ (Private, &KeyData->Key);
#if (EFI_SPECIFICATION_VERSION >= 0x0002000A)
if (!EFI_ERROR (Status)) {
//
// Record Key shift state and toggle state
//
if (Private->LeftCtrl) {
Private->KeyState.KeyShiftState |= EFI_LEFT_CONTROL_PRESSED;
}
if (Private->RightCtrl) {
Private->KeyState.KeyShiftState |= EFI_RIGHT_CONTROL_PRESSED;
}
if (Private->LeftAlt) {
Private->KeyState.KeyShiftState |= EFI_LEFT_ALT_PRESSED;
}
if (Private->RightAlt) {
Private->KeyState.KeyShiftState |= EFI_RIGHT_ALT_PRESSED;
}
if (Private->LeftShift) {
Private->KeyState.KeyShiftState |= EFI_LEFT_SHIFT_PRESSED;
}
if (Private->RightShift) {
Private->KeyState.KeyShiftState |= EFI_RIGHT_SHIFT_PRESSED;
}
if (Private->LeftLogo) {
Private->KeyState.KeyShiftState |= EFI_LEFT_LOGO_PRESSED;
}
if (Private->RightLogo) {
Private->KeyState.KeyShiftState |= EFI_RIGHT_LOGO_PRESSED;
}
if (Private->Menu) {
Private->KeyState.KeyShiftState |= EFI_MENU_KEY_PRESSED;
}
if (Private->SysReq) {
Private->KeyState.KeyShiftState |= EFI_SYS_REQ_PRESSED;
}
if (Private->CapsLock) {
Private->KeyState.KeyToggleState |= EFI_CAPS_LOCK_ACTIVE;
}
if (Private->NumLock) {
Private->KeyState.KeyToggleState |= EFI_NUM_LOCK_ACTIVE;
}
if (Private->ScrollLock) {
Private->KeyState.KeyToggleState |= EFI_SCROLL_LOCK_ACTIVE;
}
KeyData->KeyState.KeyShiftState = Private->KeyState.KeyShiftState;
KeyData->KeyState.KeyToggleState = Private->KeyState.KeyToggleState;
Private->KeyState.KeyShiftState = EFI_SHIFT_STATE_VALID;
Private->KeyState.KeyToggleState = EFI_TOGGLE_STATE_VALID;
//
// Leave critical section and return
//
gBS->RestoreTPL (OldTpl);
GopPrivateInvokeRegisteredFunction (Private, KeyData);
return EFI_SUCCESS;
}
#endif
}
//
// Leave critical section and return
//
gBS->RestoreTPL (OldTpl);
return Status;
}
STATIC
EFI_STATUS
GopPrivateResetWorker (
IN GOP_PRIVATE_DATA *Private
)
/*++
Routine Description:
This function is a worker function for SimpleTextIn/SimpleTextInEx.Reset().
Arguments:
Private - WinNT GOP private structure
Returns:
EFI_SUCCESS - Reset successfully
--*/
{
EFI_INPUT_KEY Key;
EFI_TPL OldTpl;
//
// Enter critical section
//
OldTpl = gBS->RaiseTPL (EFI_TPL_NOTIFY);
//
// A reset is draining the Queue
//
while (GopPrivateDeleteQ (Private, &Key) == EFI_SUCCESS)
;
#if (EFI_SPECIFICATION_VERSION >= 0x0002000A)
Private->LeftShift = FALSE;
Private->RightShift = FALSE;
Private->LeftAlt = FALSE;
Private->RightAlt = FALSE;
Private->LeftCtrl = FALSE;
Private->RightCtrl = FALSE;
Private->LeftLogo = FALSE;
Private->RightLogo = FALSE;
Private->Menu = FALSE;
Private->SysReq = FALSE;
Private->CapsLock = FALSE;
Private->NumLock = FALSE;
Private->ScrollLock = FALSE;
Private->KeyState.KeyShiftState = EFI_SHIFT_STATE_VALID;
Private->KeyState.KeyToggleState = EFI_TOGGLE_STATE_VALID;
#endif
//
// Leave critical section and return
//
gBS->RestoreTPL (OldTpl);
return EFI_SUCCESS;
}
EFI_STATUS
GopPrivateReadKeyStrokeWorker (
IN GOP_PRIVATE_DATA *Private,
OUT EFI_KEY_DATA *KeyData
)
/*++
Routine Description:
Reads the next keystroke from the input device. The WaitForKey Event can
be used to test for existance of a keystroke via WaitForEvent () call.
Arguments:
Private - The private structure of WinNt Gop device.
KeyData - A pointer to a buffer that is filled in with the keystroke
state data for the key that was pressed.
Returns:
EFI_SUCCESS - The keystroke information was returned.
EFI_NOT_READY - There was no keystroke data availiable.
EFI_DEVICE_ERROR - The keystroke information was not returned due to
hardware errors.
EFI_INVALID_PARAMETER - KeyData is NULL.
--*/
{
EFI_STATUS Status;
EFI_TPL OldTpl;
if (KeyData == NULL) {
return EFI_INVALID_PARAMETER;
}
//
// Enter critical section
//
OldTpl = gBS->RaiseTPL (TPL_NOTIFY);
//
// Call hot key callback before telling caller there is a key available
//
WinNtGopSimpleTextInTimerHandler (NULL, Private);
ZeroMem (&KeyData->Key, sizeof (KeyData->Key));
InitializeKeyState (Private, &KeyData->KeyState);
Status = GopPrivateCheckQ (&Private->QueueForRead);
if (!EFI_ERROR (Status)) {
//
// If a Key press exists try and read it.
//
Status = GopPrivateDeleteQ (Private, &Private->QueueForRead, KeyData);
if (!EFI_ERROR (Status)) {
//
// If partial keystroke is not enabled, check whether it is value key. If not return
// EFI_NOT_READY.
//
if (!Private->IsPartialKeySupport) {
if (KeyData->Key.ScanCode == SCAN_NULL && KeyData->Key.UnicodeChar == CHAR_NULL) {
Status = EFI_NOT_READY;
}
}
}
}
//
// Leave critical section and return
//
gBS->RestoreTPL (OldTpl);
return Status;
}
EFI_STATUS
GopPrivateResetWorker (
IN GOP_PRIVATE_DATA *Private
)
/*++
Routine Description:
This function is a worker function for SimpleTextIn/SimpleTextInEx.Reset().
Arguments:
Private - WinNT GOP private structure
Returns:
EFI_SUCCESS - Reset successfully
--*/
{
EFI_KEY_DATA KeyData;
EFI_TPL OldTpl;
//
// Enter critical section
//
OldTpl = gBS->RaiseTPL (TPL_NOTIFY);
//
// A reset is draining the Queue
//
while (GopPrivateDeleteQ (Private, &Private->QueueForRead, &KeyData) == EFI_SUCCESS)
;
while (GopPrivateDeleteQ (Private, &Private->QueueForNotify, &KeyData) == EFI_SUCCESS)
;
Private->LeftShift = FALSE;
Private->RightShift = FALSE;
Private->LeftAlt = FALSE;
Private->RightAlt = FALSE;
Private->LeftCtrl = FALSE;
Private->RightCtrl = FALSE;
Private->LeftLogo = FALSE;
Private->RightLogo = FALSE;
Private->Menu = FALSE;
Private->SysReq = FALSE;
Private->CapsLock = FALSE;
Private->NumLock = FALSE;
Private->ScrollLock = FALSE;
Private->IsPartialKeySupport = FALSE;
Private->KeyState.KeyShiftState = EFI_SHIFT_STATE_VALID;
Private->KeyState.KeyToggleState = EFI_TOGGLE_STATE_VALID;
//
// Leave critical section and return
//
gBS->RestoreTPL (OldTpl);
return EFI_SUCCESS;
}
