diff options
Diffstat (limited to 'MdeModulePkg/Bus/Usb/UsbKbDxe/EfiKey.c')
| -rw-r--r-- | MdeModulePkg/Bus/Usb/UsbKbDxe/EfiKey.c | 180 |
1 files changed, 62 insertions, 118 deletions
diff --git a/MdeModulePkg/Bus/Usb/UsbKbDxe/EfiKey.c b/MdeModulePkg/Bus/Usb/UsbKbDxe/EfiKey.c index 278c2da19a..fa1c7e076b 100644 --- a/MdeModulePkg/Bus/Usb/UsbKbDxe/EfiKey.c +++ b/MdeModulePkg/Bus/Usb/UsbKbDxe/EfiKey.c @@ -2,7 +2,7 @@ USB Keyboard Driver that manages USB keyboard and produces Simple Text Input
Protocol and Simple Text Input Ex Protocol.
-Copyright (c) 2004 - 2010, Intel Corporation. All rights reserved.<BR>
+Copyright (c) 2004 - 2011, Intel Corporation. All rights reserved.<BR>
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
@@ -263,6 +263,20 @@ USBKeyboardDriverBindingStart ( InitializeListHead (&UsbKeyboardDevice->NotifyList);
Status = gBS->CreateEvent (
+ EVT_TIMER | EVT_NOTIFY_SIGNAL,
+ TPL_NOTIFY,
+ USBKeyboardTimerHandler,
+ UsbKeyboardDevice,
+ &UsbKeyboardDevice->TimerEvent
+ );
+ if (!EFI_ERROR (Status)) {
+ Status = gBS->SetTimer (UsbKeyboardDevice->TimerEvent, TimerPeriodic, KEYBOARD_TIMER_INTERVAL);
+ }
+ if (EFI_ERROR (Status)) {
+ goto ErrorExit;
+ }
+
+ Status = gBS->CreateEvent (
EVT_NOTIFY_WAIT,
TPL_NOTIFY,
USBKeyboardWaitForKey,
@@ -391,6 +405,9 @@ USBKeyboardDriverBindingStart ( //
ErrorExit:
if (UsbKeyboardDevice != NULL) {
+ if (UsbKeyboardDevice->TimerEvent != NULL) {
+ gBS->CloseEvent (UsbKeyboardDevice->TimerEvent);
+ }
if (UsbKeyboardDevice->SimpleInput.WaitForKey != NULL) {
gBS->CloseEvent (UsbKeyboardDevice->SimpleInput.WaitForKey);
}
@@ -513,11 +530,12 @@ USBKeyboardDriverBindingStop ( //
// Free all resources.
//
+ gBS->CloseEvent (UsbKeyboardDevice->TimerEvent);
gBS->CloseEvent (UsbKeyboardDevice->RepeatTimer);
gBS->CloseEvent (UsbKeyboardDevice->DelayedRecoveryEvent);
- gBS->CloseEvent ((UsbKeyboardDevice->SimpleInput).WaitForKey);
- gBS->CloseEvent (UsbKeyboardDevice->SimpleInputEx.WaitForKeyEx);
- KbdFreeNotifyList (&UsbKeyboardDevice->NotifyList);
+ gBS->CloseEvent (UsbKeyboardDevice->SimpleInput.WaitForKey);
+ gBS->CloseEvent (UsbKeyboardDevice->SimpleInputEx.WaitForKeyEx);
+ KbdFreeNotifyList (&UsbKeyboardDevice->NotifyList);
ReleaseKeyboardLayoutResources (UsbKeyboardDevice);
gBS->CloseEvent (UsbKeyboardDevice->KeyboardLayoutEvent);
@@ -526,6 +544,9 @@ USBKeyboardDriverBindingStop ( FreeUnicodeStringTable (UsbKeyboardDevice->ControllerNameTable);
}
+ DestroyQueue (&UsbKeyboardDevice->UsbKeyQueue);
+ DestroyQueue (&UsbKeyboardDevice->EfiKeyQueue);
+
FreePool (UsbKeyboardDevice);
return Status;
@@ -547,89 +568,20 @@ USBKeyboardDriverBindingStop ( **/
EFI_STATUS
-EFIAPI
USBKeyboardReadKeyStrokeWorker (
IN OUT USB_KB_DEV *UsbKeyboardDevice,
OUT EFI_KEY_DATA *KeyData
)
{
- EFI_STATUS Status;
- UINT8 KeyCode;
- LIST_ENTRY *Link;
- LIST_ENTRY *NotifyList;
- KEYBOARD_CONSOLE_IN_EX_NOTIFY *CurrentNotify;
- EFI_KEY_DATA OriginalKeyData;
-
if (KeyData == NULL) {
return EFI_INVALID_PARAMETER;
}
- //
- // If there is no saved USB keycode, fetch it
- // by calling USBKeyboardCheckForKey().
- //
- if (UsbKeyboardDevice->CurKeyCode == 0) {
- Status = USBKeyboardCheckForKey (UsbKeyboardDevice);
- if (EFI_ERROR (Status)) {
- return EFI_NOT_READY;
- }
- }
-
- KeyData->Key.UnicodeChar = 0;
- KeyData->Key.ScanCode = SCAN_NULL;
-
- //
- // Store the current keycode and clear it.
- //
- KeyCode = UsbKeyboardDevice->CurKeyCode;
- UsbKeyboardDevice->CurKeyCode = 0;
-
- //
- // Translate saved USB keycode into EFI_INPUT_KEY
- //
- Status = UsbKeyCodeToEfiInputKey (UsbKeyboardDevice, KeyCode, &KeyData->Key);
- if (EFI_ERROR (Status)) {
- return Status;
+ if (IsQueueEmpty (&UsbKeyboardDevice->EfiKeyQueue)) {
+ return EFI_NOT_READY;
}
- //
- // Get current state of various toggled attributes as well as input modifier values,
- // and set them as valid.
- //
- CopyMem (&KeyData->KeyState, &UsbKeyboardDevice->KeyState, sizeof (KeyData->KeyState));
-
- UsbKeyboardDevice->KeyState.KeyShiftState = EFI_SHIFT_STATE_VALID;
- UsbKeyboardDevice->KeyState.KeyToggleState = EFI_TOGGLE_STATE_VALID;
-
- //
- // Switch the control value to their original characters.
- // In UsbKeyCodeToEfiInputKey() the CTRL-Alpha characters have been switched to
- // their corresponding control value (ctrl-a = 0x0001 through ctrl-Z = 0x001A),
- // here switch them back for notification function.
- //
- CopyMem (&OriginalKeyData, KeyData, sizeof (EFI_KEY_DATA));
- if (UsbKeyboardDevice->CtrlOn) {
- if (OriginalKeyData.Key.UnicodeChar >= 0x01 && OriginalKeyData.Key.UnicodeChar <= 0x1A) {
- if (UsbKeyboardDevice->CapsOn) {
- OriginalKeyData.Key.UnicodeChar = (CHAR16)(OriginalKeyData.Key.UnicodeChar + 'A' - 1);
- } else {
- OriginalKeyData.Key.UnicodeChar = (CHAR16)(OriginalKeyData.Key.UnicodeChar + 'a' - 1);
- }
- }
- }
-
- //
- // Invoke notification functions if the key is registered.
- //
- NotifyList = &UsbKeyboardDevice->NotifyList;
- for (Link = GetFirstNode (NotifyList);
- !IsNull (NotifyList, Link);
- Link = GetNextNode (NotifyList, Link)) {
- CurrentNotify = CR (Link, KEYBOARD_CONSOLE_IN_EX_NOTIFY, NotifyEntry, USB_KB_CONSOLE_IN_EX_NOTIFY_SIGNATURE);
- if (IsKeyRegistered (&CurrentNotify->KeyData, &OriginalKeyData)) {
- CurrentNotify->KeyNotificationFn (&OriginalKeyData);
- }
- }
+ Dequeue (&UsbKeyboardDevice->EfiKeyQueue, KeyData, sizeof (*KeyData));
return EFI_SUCCESS;
}
@@ -680,8 +632,8 @@ USBKeyboardReset ( //
// Clear the key buffer of this USB keyboard
//
- InitUSBKeyBuffer (&(UsbKeyboardDevice->KeyboardBuffer));
- UsbKeyboardDevice->CurKeyCode = 0;
+ InitQueue (&UsbKeyboardDevice->UsbKeyQueue, sizeof (USB_KEY));
+ InitQueue (&UsbKeyboardDevice->EfiKeyQueue, sizeof (EFI_KEY_DATA));
return EFI_SUCCESS;
}
@@ -690,7 +642,6 @@ USBKeyboardReset ( // Exhaustive reset
//
Status = InitUSBKeyboard (UsbKeyboardDevice);
- UsbKeyboardDevice->CurKeyCode = 0;
if (EFI_ERROR (Status)) {
return EFI_DEVICE_ERROR;
}
@@ -755,50 +706,55 @@ USBKeyboardWaitForKey ( UsbKeyboardDevice = (USB_KB_DEV *) Context;
- if (UsbKeyboardDevice->CurKeyCode == 0) {
- if (EFI_ERROR (USBKeyboardCheckForKey (UsbKeyboardDevice))) {
- //
- // If no pending key, simply return.
- //
- return ;
- }
+ if (!IsQueueEmpty (&UsbKeyboardDevice->EfiKeyQueue)) {
+ //
+ // If there is pending key, signal the event.
+ //
+ gBS->SignalEvent (Event);
}
- //
- // If there is pending key, signal the event.
- //
- gBS->SignalEvent (Event);
}
-
/**
- Check whether there is key pending in the keyboard buffer.
-
- @param UsbKeyboardDevice The USB_KB_DEV instance.
-
- @retval EFI_SUCCESS There is pending key to read.
- @retval EFI_NOT_READY No pending key to read.
+ Timer handler to convert the key from USB.
+ @param Event Indicates the event that invoke this function.
+ @param Context Indicates the calling context.
**/
-EFI_STATUS
+VOID
EFIAPI
-USBKeyboardCheckForKey (
- IN OUT USB_KB_DEV *UsbKeyboardDevice
+USBKeyboardTimerHandler (
+ IN EFI_EVENT Event,
+ IN VOID *Context
)
{
- EFI_STATUS Status;
- UINT8 KeyCode;
+ EFI_STATUS Status;
+ USB_KB_DEV *UsbKeyboardDevice;
+ UINT8 KeyCode;
+ EFI_KEY_DATA KeyData;
+ UsbKeyboardDevice = (USB_KB_DEV *) Context;
+
//
// Fetch raw data from the USB keyboard buffer,
// and translate it into USB keycode.
//
Status = USBParseKey (UsbKeyboardDevice, &KeyCode);
if (EFI_ERROR (Status)) {
- return EFI_NOT_READY;
+ return ;
}
- UsbKeyboardDevice->CurKeyCode = KeyCode;
- return EFI_SUCCESS;
+ //
+ // Translate saved USB keycode into EFI_INPUT_KEY
+ //
+ Status = UsbKeyCodeToEfiInputKey (UsbKeyboardDevice, KeyCode, &KeyData);
+ if (EFI_ERROR (Status)) {
+ return ;
+ }
+
+ //
+ // Insert to the EFI Key queue
+ //
+ Enqueue (&UsbKeyboardDevice->EfiKeyQueue, &KeyData, sizeof (KeyData));
}
/**
@@ -811,7 +767,6 @@ USBKeyboardCheckForKey ( **/
EFI_STATUS
-EFIAPI
KbdFreeNotifyList (
IN OUT LIST_ENTRY *NotifyList
)
@@ -843,7 +798,6 @@ KbdFreeNotifyList ( **/
BOOLEAN
-EFIAPI
IsKeyRegistered (
IN EFI_KEY_DATA *RegsiteredData,
IN EFI_KEY_DATA *InputData
@@ -905,8 +859,6 @@ USBKeyboardResetEx ( {
EFI_STATUS Status;
USB_KB_DEV *UsbKeyboardDevice;
- EFI_TPL OldTpl;
-
UsbKeyboardDevice = TEXT_INPUT_EX_USB_KB_DEV_FROM_THIS (This);
@@ -915,11 +867,6 @@ USBKeyboardResetEx ( return EFI_DEVICE_ERROR;
}
- OldTpl = gBS->RaiseTPL (TPL_NOTIFY);
- UsbKeyboardDevice->KeyState.KeyShiftState = EFI_SHIFT_STATE_VALID;
- UsbKeyboardDevice->KeyState.KeyToggleState = EFI_TOGGLE_STATE_VALID;
- gBS->RestoreTPL (OldTpl);
-
return EFI_SUCCESS;
}
@@ -986,8 +933,7 @@ USBKeyboardSetState ( UsbKeyboardDevice = TEXT_INPUT_EX_USB_KB_DEV_FROM_THIS (This);
- if (((UsbKeyboardDevice->KeyState.KeyToggleState & EFI_TOGGLE_STATE_VALID) != EFI_TOGGLE_STATE_VALID) ||
- ((*KeyToggleState & EFI_TOGGLE_STATE_VALID) != EFI_TOGGLE_STATE_VALID)) {
+ if ((*KeyToggleState & EFI_TOGGLE_STATE_VALID) != EFI_TOGGLE_STATE_VALID) {
return EFI_UNSUPPORTED;
}
@@ -1011,8 +957,6 @@ USBKeyboardSetState ( SetKeyLED (UsbKeyboardDevice);
- UsbKeyboardDevice->KeyState.KeyToggleState = *KeyToggleState;
-
return EFI_SUCCESS;
}
|