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audk/MdeModulePkg/Bus/Usb/UsbKbDxe/EfiKey.c

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/** @file
USB Keyboard Driver that includes the implementation of interface.
Copyright (c) 2004 - 2008, 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.
**/
#include "EfiKey.h"
#include "KeyBoard.h"
/**
The Usb Keyboard Driver Entry Point.
@param ImageHandle The driver image handle.
@param SystemTable The system table.
@return EFI_SUCCESS The component name protocol is installed.
@return Others Failed to install.
**/
EFI_STATUS
EFIAPI
USBKeyboardDriverBindingEntryPoint (
IN EFI_HANDLE ImageHandle,
IN EFI_SYSTEM_TABLE *SystemTable
);
/**
Check whether USB keyboard driver support this device.
@param This The USB keyboard driver binding protocol.
@param Controller The controller handle to check.
@param RemainingDevicePath The remaining device path.
@retval EFI_SUCCESS The driver supports this controller.
@retval EFI_UNSUPPORTED This device isn't supported.
**/
EFI_STATUS
EFIAPI
USBKeyboardDriverBindingSupported (
IN EFI_DRIVER_BINDING_PROTOCOL *This,
IN EFI_HANDLE Controller,
IN EFI_DEVICE_PATH_PROTOCOL *RemainingDevicePath
);
/**
Start running driver on the controller.
@param This The USB keyboard driver binding instance.
@param Controller The controller to check.
@param RemainingDevicePath The remaining device patch.
@retval EFI_SUCCESS The controller is controlled by the usb keyboard driver.
@return Other The keyboard driver doesn't support this controller.
**/
EFI_STATUS
EFIAPI
USBKeyboardDriverBindingStart (
IN EFI_DRIVER_BINDING_PROTOCOL *This,
IN EFI_HANDLE Controller,
IN EFI_DEVICE_PATH_PROTOCOL *RemainingDevicePath
);
/**
Stop handle the controller by this USB keyboard driver.
@param This The USB keyboard driver binding protocol.
@param Controller The controller to release.
@param NumberOfChildren The number of handles in ChildHandleBuffer.
@param ChildHandleBuffer The array of child handle.
@retval EFI_SUCCESS The controller or children are stopped.
@retval EFI_DEVICE_ERROR Failed to stop the driver.
**/
EFI_STATUS
EFIAPI
USBKeyboardDriverBindingStop (
IN EFI_DRIVER_BINDING_PROTOCOL *This,
IN EFI_HANDLE Controller,
IN UINTN NumberOfChildren,
IN EFI_HANDLE *ChildHandleBuffer
);
/**
Reset Usb Keyboard.
@param This The protocol instance of EFI_SIMPLE_TEXT_INPUT_PROTOCOL.
@param ExtendedVerification Whether completely reset keyboard or not.
@retval EFI_SUCCESS Reset keyboard successfully.
@retval EFI_DEVICE_ERROR Reset keyboard failed.
**/
EFI_STATUS
EFIAPI
USBKeyboardReset (
IN EFI_SIMPLE_TEXT_INPUT_PROTOCOL *This,
IN BOOLEAN ExtendedVerification
);
/**
Implements EFI_SIMPLE_TEXT_INPUT_PROTOCOL.ReadKeyStroke() function.
@param This The EFI_SIMPLE_TEXT_INPUT_PROTOCOL instance.
@param Key A pointer to a buffer that is filled in with the keystroke
information for the key that was pressed.
@retval EFI_SUCCESS Read key stroke successfully.
@retval Other Read key stroke failed.
**/
EFI_STATUS
EFIAPI
USBKeyboardReadKeyStroke (
IN EFI_SIMPLE_TEXT_INPUT_PROTOCOL *This,
OUT EFI_INPUT_KEY *Key
);
/**
Handler function for WaitForKey event.
@param Event Event to be signaled when a key is pressed.
@param Context Points to USB_KB_DEV instance.
@return None.
**/
VOID
EFIAPI
USBKeyboardWaitForKey (
IN EFI_EVENT Event,
IN VOID *Context
);
/**
Check whether there is key pending.
@param UsbKeyboardDevice The USB_KB_DEV instance.
@retval EFI_SUCCESS Have key pending to read.
@retval Other Parse key failed.
**/
EFI_STATUS
EFIAPI
USBKeyboardCheckForKey (
IN USB_KB_DEV *UsbKeyboardDevice
);
EFI_GUID gEfiUsbKeyboardDriverGuid = {
0xa05f5f78, 0xfb3, 0x4d10, {0x90, 0x90, 0xac, 0x4, 0x6e, 0xeb, 0x7c, 0x3c}
};
/**
Free keyboard notify list.
@param ListHead The list head.
@retval EFI_SUCCESS Free the notify list successfully.
@retval EFI_INVALID_PARAMETER ListHead is invalid.
**/
EFI_STATUS
EFIAPI
KbdFreeNotifyList (
IN OUT LIST_ENTRY *ListHead
);
/**
Whether the pressed key matches a registered key or not.
@param RegsiteredData A pointer to a buffer that is filled in with the keystroke
state data for the key that was registered.
@param InputData A pointer to a buffer that is filled in with the keystroke
state data for the key that was pressed.
@retval TRUE Key pressed matches a registered key.
@retval FLASE Match failed.
**/
BOOLEAN
EFIAPI
IsKeyRegistered (
IN EFI_KEY_DATA *RegsiteredData,
IN EFI_KEY_DATA *InputData
);
//
// USB Keyboard Driver Global Variables
//
EFI_DRIVER_BINDING_PROTOCOL gUsbKeyboardDriverBinding = {
USBKeyboardDriverBindingSupported,
USBKeyboardDriverBindingStart,
USBKeyboardDriverBindingStop,
0xa,
NULL,
NULL
};
/**
The Usb Keyboard Driver Entry Point.
@param ImageHandle The driver image handle.
@param SystemTable The system table.
@return EFI_SUCCESS The component name protocol is installed.
@return Others Failed to install.
**/
EFI_STATUS
EFIAPI
USBKeyboardDriverBindingEntryPoint (
IN EFI_HANDLE ImageHandle,
IN EFI_SYSTEM_TABLE *SystemTable
)
{
return EfiLibInstallDriverBindingComponentName2 (
ImageHandle,
SystemTable,
&gUsbKeyboardDriverBinding,
ImageHandle,
&gUsbKeyboardComponentName,
&gUsbKeyboardComponentName2
);
}
/**
Check whether USB keyboard driver support this device.
@param This The USB keyboard driver binding protocol.
@param Controller The controller handle to check.
@param RemainingDevicePath The remaining device path.
@retval EFI_SUCCESS The driver supports this controller.
@retval EFI_UNSUPPORTED This device isn't supported.
**/
EFI_STATUS
EFIAPI
USBKeyboardDriverBindingSupported (
IN EFI_DRIVER_BINDING_PROTOCOL *This,
IN EFI_HANDLE Controller,
IN EFI_DEVICE_PATH_PROTOCOL *RemainingDevicePath
)
{
EFI_STATUS OpenStatus;
EFI_USB_IO_PROTOCOL *UsbIo;
EFI_STATUS Status;
//
// Check if USB_IO protocol is attached on the controller handle.
//
OpenStatus = gBS->OpenProtocol (
Controller,
&gEfiUsbIoProtocolGuid,
(VOID **) &UsbIo,
This->DriverBindingHandle,
Controller,
EFI_OPEN_PROTOCOL_BY_DRIVER
);
if (EFI_ERROR (OpenStatus)) {
return OpenStatus;
}
//
// Use the USB I/O protocol interface to check whether the Controller is
// the Keyboard controller that can be managed by this driver.
//
Status = EFI_SUCCESS;
if (!IsUSBKeyboard (UsbIo)) {
Status = EFI_UNSUPPORTED;
}
gBS->CloseProtocol (
Controller,
&gEfiUsbIoProtocolGuid,
This->DriverBindingHandle,
Controller
);
return Status;
}
/**
Start running driver on the controller.
@param This The USB keyboard driver binding instance.
@param Controller The controller to check.
@param RemainingDevicePath The remaining device patch.
@retval EFI_SUCCESS The controller is controlled by the usb keyboard driver.
@return Other The keyboard driver doesn't support this controller.
**/
EFI_STATUS
EFIAPI
USBKeyboardDriverBindingStart (
IN EFI_DRIVER_BINDING_PROTOCOL *This,
IN EFI_HANDLE Controller,
IN EFI_DEVICE_PATH_PROTOCOL *RemainingDevicePath
)
{
EFI_STATUS Status;
EFI_USB_IO_PROTOCOL *UsbIo;
USB_KB_DEV *UsbKeyboardDevice;
UINT8 EndpointNumber;
EFI_USB_ENDPOINT_DESCRIPTOR EndpointDescriptor;
UINT8 Index;
UINT8 EndpointAddr;
UINT8 PollingInterval;
UINT8 PacketSize;
BOOLEAN Found;
UsbKeyboardDevice = NULL;
Found = FALSE;
//
// Open USB_IO Protocol
//
Status = gBS->OpenProtocol (
Controller,
&gEfiUsbIoProtocolGuid,
(VOID **) &UsbIo,
This->DriverBindingHandle,
Controller,
EFI_OPEN_PROTOCOL_BY_DRIVER
);
if (EFI_ERROR (Status)) {
return Status;
}
UsbKeyboardDevice = AllocateZeroPool (sizeof (USB_KB_DEV));
if (UsbKeyboardDevice == NULL) {
gBS->CloseProtocol (
Controller,
&gEfiUsbIoProtocolGuid,
This->DriverBindingHandle,
Controller
);
return EFI_OUT_OF_RESOURCES;
}
//
// Get the Device Path Protocol on Controller's handle
//
Status = gBS->OpenProtocol (
Controller,
&gEfiDevicePathProtocolGuid,
(VOID **) &UsbKeyboardDevice->DevicePath,
This->DriverBindingHandle,
Controller,
EFI_OPEN_PROTOCOL_GET_PROTOCOL
);
if (EFI_ERROR (Status)) {
gBS->FreePool (UsbKeyboardDevice);
gBS->CloseProtocol (
Controller,
&gEfiUsbIoProtocolGuid,
This->DriverBindingHandle,
Controller
);
return Status;
}
//
// Report that the usb keyboard is being enabled
//
KbdReportStatusCode (
UsbKeyboardDevice->DevicePath,
EFI_PROGRESS_CODE,
PcdGet32 (PcdStatusCodeValueKeyboardEnable)
);
//
// This is pretty close to keyboard detection, so log progress
//
KbdReportStatusCode (
UsbKeyboardDevice->DevicePath,
EFI_PROGRESS_CODE,
PcdGet32 (PcdStatusCodeValueKeyboardPresenceDetect)
);
//
// Initialize UsbKeyboardDevice
//
UsbKeyboardDevice->UsbIo = UsbIo;
//
// Get interface & endpoint descriptor
//
UsbIo->UsbGetInterfaceDescriptor (
UsbIo,
&UsbKeyboardDevice->InterfaceDescriptor
);
EndpointNumber = UsbKeyboardDevice->InterfaceDescriptor.NumEndpoints;
for (Index = 0; Index < EndpointNumber; Index++) {
UsbIo->UsbGetEndpointDescriptor (
UsbIo,
Index,
&EndpointDescriptor
);
if ((EndpointDescriptor.Attributes & 0x03) == 0x03) {
//
// We only care interrupt endpoint here
//
CopyMem(&UsbKeyboardDevice->IntEndpointDescriptor, &EndpointDescriptor, sizeof(EndpointDescriptor));
Found = TRUE;
}
}
if (!Found) {
//
// No interrupt endpoint found, then return unsupported.
//
gBS->FreePool (UsbKeyboardDevice);
gBS->CloseProtocol (
Controller,
&gEfiUsbIoProtocolGuid,
This->DriverBindingHandle,
Controller
);
return EFI_UNSUPPORTED;
}
UsbKeyboardDevice->Signature = USB_KB_DEV_SIGNATURE;
UsbKeyboardDevice->SimpleInput.Reset = USBKeyboardReset;
UsbKeyboardDevice->SimpleInput.ReadKeyStroke = USBKeyboardReadKeyStroke;
UsbKeyboardDevice->SimpleInputEx.Reset = USBKeyboardResetEx;
UsbKeyboardDevice->SimpleInputEx.ReadKeyStrokeEx = USBKeyboardReadKeyStrokeEx;
UsbKeyboardDevice->SimpleInputEx.SetState = USBKeyboardSetState;
UsbKeyboardDevice->SimpleInputEx.RegisterKeyNotify = USBKeyboardRegisterKeyNotify;
UsbKeyboardDevice->SimpleInputEx.UnregisterKeyNotify = USBKeyboardUnregisterKeyNotify;
InitializeListHead (&UsbKeyboardDevice->NotifyList);
Status = gBS->CreateEvent (
EVT_NOTIFY_WAIT,
TPL_NOTIFY,
USBKeyboardWaitForKey,
UsbKeyboardDevice,
&(UsbKeyboardDevice->SimpleInputEx.WaitForKeyEx)
);
if (EFI_ERROR (Status)) {
goto ErrorExit;
}
Status = InitKeyboardLayout (UsbKeyboardDevice);
if (EFI_ERROR (Status)) {
goto ErrorExit;
}
Status = gBS->CreateEvent (
EVT_NOTIFY_WAIT,
TPL_NOTIFY,
USBKeyboardWaitForKey,
UsbKeyboardDevice,
&(UsbKeyboardDevice->SimpleInput.WaitForKey)
);
if (EFI_ERROR (Status)) {
gBS->FreePool (UsbKeyboardDevice);
gBS->CloseProtocol (
Controller,
&gEfiUsbIoProtocolGuid,
This->DriverBindingHandle,
Controller
);
return Status;
}
//
// Install simple txt in protocol interface
// for the usb keyboard device.
// Usb keyboard is a hot plug device, and expected to work immediately
// when plugging into system, so a HotPlugDeviceGuid is installed onto
// the usb keyboard device handle, to distinguish it from other conventional
// console devices.
//
Status = gBS->InstallMultipleProtocolInterfaces (
&Controller,
&gEfiSimpleTextInProtocolGuid,
&UsbKeyboardDevice->SimpleInput,
&gEfiSimpleTextInputExProtocolGuid,
&UsbKeyboardDevice->SimpleInputEx,
&gEfiHotPlugDeviceGuid,
NULL,
NULL
);
if (EFI_ERROR (Status)) {
gBS->CloseEvent (UsbKeyboardDevice->SimpleInput.WaitForKey);
gBS->FreePool (UsbKeyboardDevice);
gBS->CloseProtocol (
Controller,
&gEfiUsbIoProtocolGuid,
This->DriverBindingHandle,
Controller
);
return Status;
}
//
// Reset USB Keyboard Device
//
Status = UsbKeyboardDevice->SimpleInput.Reset (
&UsbKeyboardDevice->SimpleInput,
TRUE
);
if (EFI_ERROR (Status)) {
gBS->UninstallMultipleProtocolInterfaces (
Controller,
&gEfiSimpleTextInProtocolGuid,
&UsbKeyboardDevice->SimpleInput,
&gEfiSimpleTextInputExProtocolGuid,
&UsbKeyboardDevice->SimpleInputEx,
&gEfiHotPlugDeviceGuid,
NULL,
NULL
);
gBS->CloseEvent (UsbKeyboardDevice->SimpleInput.WaitForKey);
gBS->FreePool (UsbKeyboardDevice);
gBS->CloseProtocol (
Controller,
&gEfiUsbIoProtocolGuid,
This->DriverBindingHandle,
Controller
);
return Status;
}
//
// submit async interrupt transfer
//
EndpointAddr = UsbKeyboardDevice->IntEndpointDescriptor.EndpointAddress;
PollingInterval = UsbKeyboardDevice->IntEndpointDescriptor.Interval;
PacketSize = (UINT8) (UsbKeyboardDevice->IntEndpointDescriptor.MaxPacketSize);
Status = UsbIo->UsbAsyncInterruptTransfer (
UsbIo,
EndpointAddr,
TRUE,
PollingInterval,
PacketSize,
KeyboardHandler,
UsbKeyboardDevice
);
if (EFI_ERROR (Status)) {
gBS->UninstallMultipleProtocolInterfaces (
Controller,
&gEfiSimpleTextInProtocolGuid,
&UsbKeyboardDevice->SimpleInput,
&gEfiSimpleTextInputExProtocolGuid,
&UsbKeyboardDevice->SimpleInputEx,
&gEfiHotPlugDeviceGuid,
NULL,
NULL
);
gBS->CloseEvent (UsbKeyboardDevice->SimpleInput.WaitForKey);
gBS->FreePool (UsbKeyboardDevice);
gBS->CloseProtocol (
Controller,
&gEfiUsbIoProtocolGuid,
This->DriverBindingHandle,
Controller
);
return Status;
}
UsbKeyboardDevice->ControllerNameTable = NULL;
AddUnicodeString2 (
"eng",
gUsbKeyboardComponentName.SupportedLanguages,
&UsbKeyboardDevice->ControllerNameTable,
L"Generic Usb Keyboard",
TRUE
);
AddUnicodeString2 (
"en",
gUsbKeyboardComponentName2.SupportedLanguages,
&UsbKeyboardDevice->ControllerNameTable,
L"Generic Usb Keyboard",
FALSE
);
return EFI_SUCCESS;
ErrorExit:
if (UsbKeyboardDevice != NULL) {
if (UsbKeyboardDevice->SimpleInput.WaitForKey != NULL) {
gBS->CloseEvent (UsbKeyboardDevice->SimpleInput.WaitForKey);
}
if (UsbKeyboardDevice->SimpleInputEx.WaitForKeyEx != NULL) {
gBS->CloseEvent (UsbKeyboardDevice->SimpleInputEx.WaitForKeyEx);
}
KbdFreeNotifyList (&UsbKeyboardDevice->NotifyList);
gBS->FreePool (UsbKeyboardDevice);
UsbKeyboardDevice = NULL;
}
gBS->CloseProtocol (
Controller,
&gEfiUsbIoProtocolGuid,
This->DriverBindingHandle,
Controller
);
return Status;
}
/**
Stop handle the controller by this USB keyboard driver.
@param This The USB keyboard driver binding protocol.
@param Controller The controller to release.
@param NumberOfChildren The number of handles in ChildHandleBuffer.
@param ChildHandleBuffer The array of child handle.
@retval EFI_SUCCESS The controller or children are stopped.
@retval EFI_DEVICE_ERROR Failed to stop the driver.
**/
EFI_STATUS
EFIAPI
USBKeyboardDriverBindingStop (
IN EFI_DRIVER_BINDING_PROTOCOL *This,
IN EFI_HANDLE Controller,
IN UINTN NumberOfChildren,
IN EFI_HANDLE *ChildHandleBuffer
)
{
EFI_STATUS Status;
EFI_SIMPLE_TEXT_INPUT_PROTOCOL *SimpleInput;
USB_KB_DEV *UsbKeyboardDevice;
Status = gBS->OpenProtocol (
Controller,
&gEfiSimpleTextInProtocolGuid,
(VOID **) &SimpleInput,
This->DriverBindingHandle,
Controller,
EFI_OPEN_PROTOCOL_GET_PROTOCOL
);
if (EFI_ERROR (Status)) {
return EFI_UNSUPPORTED;
}
Status = gBS->OpenProtocol (
Controller,
&gEfiSimpleTextInputExProtocolGuid,
NULL,
This->DriverBindingHandle,
Controller,
EFI_OPEN_PROTOCOL_TEST_PROTOCOL
);
if (EFI_ERROR (Status)) {
return EFI_UNSUPPORTED;
}
//
// Get USB_KB_DEV instance.
//
UsbKeyboardDevice = USB_KB_DEV_FROM_THIS (SimpleInput);
gBS->CloseProtocol (
Controller,
&gEfiSimpleTextInProtocolGuid,
This->DriverBindingHandle,
Controller
);
//
// Uninstall the Asyn Interrupt Transfer from this device
// will disable the key data input from this device
//
KbdReportStatusCode (
UsbKeyboardDevice->DevicePath,
EFI_PROGRESS_CODE,
PcdGet32 (PcdStatusCodeValueKeyboardDisable)
);
//
// Destroy asynchronous interrupt transfer
//
UsbKeyboardDevice->UsbIo->UsbAsyncInterruptTransfer (
UsbKeyboardDevice->UsbIo,
UsbKeyboardDevice->IntEndpointDescriptor.EndpointAddress,
FALSE,
UsbKeyboardDevice->IntEndpointDescriptor.Interval,
0,
NULL,
NULL
);
gBS->CloseProtocol (
Controller,
&gEfiUsbIoProtocolGuid,
This->DriverBindingHandle,
Controller
);
Status = gBS->UninstallMultipleProtocolInterfaces (
Controller,
&gEfiSimpleTextInProtocolGuid,
&UsbKeyboardDevice->SimpleInput,
&gEfiSimpleTextInputExProtocolGuid,
&UsbKeyboardDevice->SimpleInputEx,
&gEfiHotPlugDeviceGuid,
NULL,
NULL
);
//
// free all the resources.
//
gBS->CloseEvent (UsbKeyboardDevice->RepeatTimer);
gBS->CloseEvent (UsbKeyboardDevice->DelayedRecoveryEvent);
gBS->CloseEvent ((UsbKeyboardDevice->SimpleInput).WaitForKey);
gBS->CloseEvent (UsbKeyboardDevice->SimpleInputEx.WaitForKeyEx);
KbdFreeNotifyList (&UsbKeyboardDevice->NotifyList);
ReleaseKeyboardLayoutResources (UsbKeyboardDevice);
gBS->CloseEvent (UsbKeyboardDevice->KeyboardLayoutEvent);
if (UsbKeyboardDevice->ControllerNameTable != NULL) {
FreeUnicodeStringTable (UsbKeyboardDevice->ControllerNameTable);
}
gBS->FreePool (UsbKeyboardDevice);
return Status;
}
/**
Reads the next keystroke from the input device. The WaitForKey Event can
be used to test for existance of a keystroke via WaitForEvent () call.
@param UsbKeyboardDevice Usb keyboard's private structure.
@param KeyData A pointer to a buffer that is filled in with the keystroke
state data for the key that was pressed.
@return EFI_SUCCESS The keystroke information was returned.
@return EFI_NOT_READY There was no keystroke data availiable.
@return EFI_DEVICE_ERROR The keystroke information was not returned due to
hardware errors.
@return EFI_INVALID_PARAMETER KeyData is NULL.
**/
EFI_STATUS
EFIAPI
USBKeyboardReadKeyStrokeWorker (
IN USB_KB_DEV *UsbKeyboardDevice,
OUT EFI_KEY_DATA *KeyData
)
{
EFI_STATUS Status;
UINT8 KeyChar;
LIST_ENTRY *Link;
KEYBOARD_CONSOLE_IN_EX_NOTIFY *CurrentNotify;
EFI_KEY_DATA OriginalKeyData;
if (KeyData == NULL) {
return EFI_INVALID_PARAMETER;
}
//
// if there is no saved ASCII byte, fetch it
// by calling USBKeyboardCheckForKey().
//
if (UsbKeyboardDevice->CurKeyChar == 0) {
Status = USBKeyboardCheckForKey (UsbKeyboardDevice);
if (EFI_ERROR (Status)) {
return Status;
}
}
KeyData->Key.UnicodeChar = 0;
KeyData->Key.ScanCode = SCAN_NULL;
KeyChar = UsbKeyboardDevice->CurKeyChar;
UsbKeyboardDevice->CurKeyChar = 0;
//
// Translate saved ASCII byte into EFI_INPUT_KEY
//
Status = USBKeyCodeToEFIScanCode (UsbKeyboardDevice, KeyChar, &KeyData->Key);
if (EFI_ERROR (Status)) {
return Status;
}
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 USBKeyCodeToEFIScanCode() 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 != 0) {
if (OriginalKeyData.Key.UnicodeChar >= 0x01 && OriginalKeyData.Key.UnicodeChar <= 0x1A) {
if (UsbKeyboardDevice->CapsOn != 0) {
OriginalKeyData.Key.UnicodeChar = (CHAR16)(OriginalKeyData.Key.UnicodeChar + 'A' - 1);
} else {
OriginalKeyData.Key.UnicodeChar = (CHAR16)(OriginalKeyData.Key.UnicodeChar + 'a' - 1);
}
}
}
//
// Invoke notification functions if exist
//
for (Link = UsbKeyboardDevice->NotifyList.ForwardLink; Link != &UsbKeyboardDevice->NotifyList; Link = Link->ForwardLink) {
CurrentNotify = CR (
Link,
KEYBOARD_CONSOLE_IN_EX_NOTIFY,
NotifyEntry,
USB_KB_CONSOLE_IN_EX_NOTIFY_SIGNATURE
);
if (IsKeyRegistered (&CurrentNotify->KeyData, &OriginalKeyData)) {
CurrentNotify->KeyNotificationFn (&OriginalKeyData);
}
}
return EFI_SUCCESS;
}
/**
Reset Usb Keyboard.
@param This The protocol instance of EFI_SIMPLE_TEXT_INPUT_PROTOCOL.
@param ExtendedVerification Whether completely reset keyboard or not.
@retval EFI_SUCCESS Reset keyboard successfully.
@retval EFI_DEVICE_ERROR Reset keyboard failed.
**/
EFI_STATUS
EFIAPI
USBKeyboardReset (
IN EFI_SIMPLE_TEXT_INPUT_PROTOCOL *This,
IN BOOLEAN ExtendedVerification
)
{
EFI_STATUS Status;
USB_KB_DEV *UsbKeyboardDevice;
UsbKeyboardDevice = USB_KB_DEV_FROM_THIS (This);
KbdReportStatusCode (
UsbKeyboardDevice->DevicePath,
EFI_PROGRESS_CODE,
PcdGet32 (PcdStatusCodeValueKeyboardReset)
);
//
// Non Exhaustive reset:
// only reset private data structures.
//
if (!ExtendedVerification) {
//
// Clear the key buffer of this Usb keyboard
//
KbdReportStatusCode (
UsbKeyboardDevice->DevicePath,
EFI_PROGRESS_CODE,
PcdGet32 (PcdStatusCodeValueKeyboardClearBuffer)
);
InitUSBKeyBuffer (&(UsbKeyboardDevice->KeyboardBuffer));
UsbKeyboardDevice->CurKeyChar = 0;
return EFI_SUCCESS;
}
//
// Exhaustive reset
//
Status = InitUSBKeyboard (UsbKeyboardDevice);
UsbKeyboardDevice->CurKeyChar = 0;
if (EFI_ERROR (Status)) {
return EFI_DEVICE_ERROR;
}
return EFI_SUCCESS;
}
/**
Implements EFI_SIMPLE_TEXT_INPUT_PROTOCOL.ReadKeyStroke() function.
@param This The EFI_SIMPLE_TEXT_INPUT_PROTOCOL instance.
@param Key A pointer to a buffer that is filled in with the keystroke
information for the key that was pressed.
@retval EFI_SUCCESS Read key stroke successfully.
@retval Other Read key stroke failed.
**/
EFI_STATUS
EFIAPI
USBKeyboardReadKeyStroke (
IN EFI_SIMPLE_TEXT_INPUT_PROTOCOL *This,
OUT EFI_INPUT_KEY *Key
)
{
USB_KB_DEV *UsbKeyboardDevice;
EFI_STATUS Status;
EFI_KEY_DATA KeyData;
UsbKeyboardDevice = USB_KB_DEV_FROM_THIS (This);
Status = USBKeyboardReadKeyStrokeWorker (UsbKeyboardDevice, &KeyData);
if (EFI_ERROR (Status)) {
return Status;
}
CopyMem (Key, &KeyData.Key, sizeof (EFI_INPUT_KEY));
return EFI_SUCCESS;
}
/**
Handler function for WaitForKey event.
@param Event Event to be signaled when a key is pressed.
@param Context Points to USB_KB_DEV instance.
@return None.
**/
VOID
EFIAPI
USBKeyboardWaitForKey (
IN EFI_EVENT Event,
IN VOID *Context
)
{
USB_KB_DEV *UsbKeyboardDevice;
UsbKeyboardDevice = (USB_KB_DEV *) Context;
if (UsbKeyboardDevice->CurKeyChar == 0) {
if (EFI_ERROR (USBKeyboardCheckForKey (UsbKeyboardDevice))) {
return ;
}
}
//
// If has key pending, signal the event.
//
gBS->SignalEvent (Event);
}
/**
Check whether there is key pending.
@param UsbKeyboardDevice The USB_KB_DEV instance.
@retval EFI_SUCCESS Have key pending to read.
@retval Other Parse key failed.
**/
EFI_STATUS
EFIAPI
USBKeyboardCheckForKey (
IN USB_KB_DEV *UsbKeyboardDevice
)
{
EFI_STATUS Status;
UINT8 KeyChar;
//
// Fetch raw data from the USB keyboard input,
// and translate it into ASCII data.
//
Status = USBParseKey (UsbKeyboardDevice, &KeyChar);
if (EFI_ERROR (Status)) {
return Status;
}
UsbKeyboardDevice->CurKeyChar = KeyChar;
return EFI_SUCCESS;
}
/**
Report Status Code in Usb Keyboard Driver.
@param DevicePath Use this to get Device Path.
@param CodeType Status Code Type.
@param CodeValue Status Code Value.
@return None.
**/
VOID
EFIAPI
KbdReportStatusCode (
IN EFI_DEVICE_PATH_PROTOCOL *DevicePath,
IN EFI_STATUS_CODE_TYPE CodeType,
IN EFI_STATUS_CODE_VALUE Value
)
{
REPORT_STATUS_CODE_WITH_DEVICE_PATH (
CodeType,
Value,
DevicePath
);
}
/**
Free keyboard notify list.
@param ListHead The list head.
@retval EFI_SUCCESS Free the notify list successfully.
@retval EFI_INVALID_PARAMETER ListHead is invalid.
**/
EFI_STATUS
EFIAPI
KbdFreeNotifyList (
IN OUT LIST_ENTRY *ListHead
)
{
KEYBOARD_CONSOLE_IN_EX_NOTIFY *NotifyNode;
if (ListHead == NULL) {
return EFI_INVALID_PARAMETER;
}
while (!IsListEmpty (ListHead)) {
NotifyNode = CR (
ListHead->ForwardLink,
KEYBOARD_CONSOLE_IN_EX_NOTIFY,
NotifyEntry,
USB_KB_CONSOLE_IN_EX_NOTIFY_SIGNATURE
);
RemoveEntryList (ListHead->ForwardLink);
gBS->FreePool (NotifyNode);
}
return EFI_SUCCESS;
}
/**
Whether the pressed key matches a registered key or not.
@param RegsiteredData A pointer to a buffer that is filled in with the keystroke
state data for the key that was registered.
@param InputData A pointer to a buffer that is filled in with the keystroke
state data for the key that was pressed.
@retval TRUE Key pressed matches a registered key.
@retval FLASE Match failed.
**/
BOOLEAN
EFIAPI
IsKeyRegistered (
IN EFI_KEY_DATA *RegsiteredData,
IN EFI_KEY_DATA *InputData
)
{
ASSERT (RegsiteredData != NULL && InputData != NULL);
if ((RegsiteredData->Key.ScanCode != InputData->Key.ScanCode) ||
(RegsiteredData->Key.UnicodeChar != InputData->Key.UnicodeChar)) {
return FALSE;
}
//
// Assume KeyShiftState/KeyToggleState = 0 in Registered key data means these state could be ignored.
//
if (RegsiteredData->KeyState.KeyShiftState != 0 &&
RegsiteredData->KeyState.KeyShiftState != InputData->KeyState.KeyShiftState) {
return FALSE;
}
if (RegsiteredData->KeyState.KeyToggleState != 0 &&
RegsiteredData->KeyState.KeyToggleState != InputData->KeyState.KeyToggleState) {
return FALSE;
}
return TRUE;
}
//
// Simple Text Input Ex protocol functions
//
/**
The extension routine to reset the input device.
@param This Protocol instance pointer.
@param ExtendedVerification Driver may perform diagnostics on reset.
@retval EFI_SUCCESS The device was reset.
@retval EFI_DEVICE_ERROR The device is not functioning properly and could
not be reset.
**/
EFI_STATUS
EFIAPI
USBKeyboardResetEx (
IN EFI_SIMPLE_TEXT_INPUT_EX_PROTOCOL *This,
IN BOOLEAN ExtendedVerification
)
{
EFI_STATUS Status;
USB_KB_DEV *UsbKeyboardDevice;
EFI_TPL OldTpl;
UsbKeyboardDevice = TEXT_INPUT_EX_USB_KB_DEV_FROM_THIS (This);
Status = UsbKeyboardDevice->SimpleInput.Reset (&UsbKeyboardDevice->SimpleInput, ExtendedVerification);
if (EFI_ERROR (Status)) {
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;
}
/**
Reads the next keystroke from the input device. The WaitForKey Event can
be used to test for existance of a keystroke via WaitForEvent () call.
@param This Protocol instance pointer.
@param KeyData A pointer to a buffer that is filled in with the keystroke
state data for the key that was pressed.
@return EFI_SUCCESS The keystroke information was returned successfully.
@retval EFI_INVALID_PARAMETER KeyData is NULL.
@retval Other Read key stroke information failed.
**/
EFI_STATUS
EFIAPI
USBKeyboardReadKeyStrokeEx (
IN EFI_SIMPLE_TEXT_INPUT_EX_PROTOCOL *This,
OUT EFI_KEY_DATA *KeyData
)
{
USB_KB_DEV *UsbKeyboardDevice;
if (KeyData == NULL) {
return EFI_INVALID_PARAMETER;
}
UsbKeyboardDevice = TEXT_INPUT_EX_USB_KB_DEV_FROM_THIS (This);
return USBKeyboardReadKeyStrokeWorker (UsbKeyboardDevice, KeyData);
}
/**
Set certain state for the input device.
@param This Protocol instance pointer.
@param KeyToggleState A pointer to the EFI_KEY_TOGGLE_STATE to set the
state for the input device.
@retval EFI_SUCCESS The device state was set successfully.
@retval EFI_UNSUPPORTED The device does not have the ability to set its state.
@retval EFI_INVALID_PARAMETER KeyToggleState is NULL.
**/
EFI_STATUS
EFIAPI
USBKeyboardSetState (
IN EFI_SIMPLE_TEXT_INPUT_EX_PROTOCOL *This,
IN EFI_KEY_TOGGLE_STATE *KeyToggleState
)
{
USB_KB_DEV *UsbKeyboardDevice;
if (KeyToggleState == NULL) {
return EFI_INVALID_PARAMETER;
}
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)) {
return EFI_UNSUPPORTED;
}
//
// Update the status light
//
UsbKeyboardDevice->ScrollOn = 0;
UsbKeyboardDevice->NumLockOn = 0;
UsbKeyboardDevice->CapsOn = 0;
if ((*KeyToggleState & EFI_SCROLL_LOCK_ACTIVE) == EFI_SCROLL_LOCK_ACTIVE) {
UsbKeyboardDevice->ScrollOn = 1;
}
if ((*KeyToggleState & EFI_NUM_LOCK_ACTIVE) == EFI_NUM_LOCK_ACTIVE) {
UsbKeyboardDevice->NumLockOn = 1;
}
if ((*KeyToggleState & EFI_CAPS_LOCK_ACTIVE) == EFI_CAPS_LOCK_ACTIVE) {
UsbKeyboardDevice->CapsOn = 1;
}
SetKeyLED (UsbKeyboardDevice);
UsbKeyboardDevice->KeyState.KeyToggleState = *KeyToggleState;
return EFI_SUCCESS;
}
/**
Register a notification function for a particular keystroke for the input device.
@param This Protocol instance pointer.
@param KeyData A pointer to a buffer that is filled in with the keystroke
information data for the key that was pressed.
@param KeyNotificationFunction Points to the function to be called when the key
sequence is typed specified by KeyData.
@param NotifyHandle Points to the unique handle assigned to the registered notification.
@retval EFI_SUCCESS The notification function was registered successfully.
@retval EFI_OUT_OF_RESOURCES Unable to allocate resources for necesssary data structures.
@retval EFI_INVALID_PARAMETER KeyData or NotifyHandle is NULL.
**/
EFI_STATUS
EFIAPI
USBKeyboardRegisterKeyNotify (
IN EFI_SIMPLE_TEXT_INPUT_EX_PROTOCOL *This,
IN EFI_KEY_DATA *KeyData,
IN EFI_KEY_NOTIFY_FUNCTION KeyNotificationFunction,
OUT EFI_HANDLE *NotifyHandle
)
{
USB_KB_DEV *UsbKeyboardDevice;
EFI_STATUS Status;
KEYBOARD_CONSOLE_IN_EX_NOTIFY *NewNotify;
LIST_ENTRY *Link;
KEYBOARD_CONSOLE_IN_EX_NOTIFY *CurrentNotify;
if (KeyData == NULL || NotifyHandle == NULL || KeyNotificationFunction == NULL) {
return EFI_INVALID_PARAMETER;
}
UsbKeyboardDevice = TEXT_INPUT_EX_USB_KB_DEV_FROM_THIS (This);
//
// Return EFI_SUCCESS if the (KeyData, NotificationFunction) is already registered.
//
for (Link = UsbKeyboardDevice->NotifyList.ForwardLink; Link != &UsbKeyboardDevice->NotifyList; Link = Link->ForwardLink) {
CurrentNotify = CR (
Link,
KEYBOARD_CONSOLE_IN_EX_NOTIFY,
NotifyEntry,
USB_KB_CONSOLE_IN_EX_NOTIFY_SIGNATURE
);
if (IsKeyRegistered (&CurrentNotify->KeyData, KeyData)) {
if (CurrentNotify->KeyNotificationFn == KeyNotificationFunction) {
*NotifyHandle = CurrentNotify->NotifyHandle;
return EFI_SUCCESS;
}
}
}
//
// Allocate resource to save the notification function
//
NewNotify = (KEYBOARD_CONSOLE_IN_EX_NOTIFY *) AllocateZeroPool (sizeof (KEYBOARD_CONSOLE_IN_EX_NOTIFY));
if (NewNotify == NULL) {
return EFI_OUT_OF_RESOURCES;
}
NewNotify->Signature = USB_KB_CONSOLE_IN_EX_NOTIFY_SIGNATURE;
NewNotify->KeyNotificationFn = KeyNotificationFunction;
CopyMem (&NewNotify->KeyData, KeyData, sizeof (EFI_KEY_DATA));
InsertTailList (&UsbKeyboardDevice->NotifyList, &NewNotify->NotifyEntry);
//
// Use gSimpleTextInExNotifyGuid to get a valid EFI_HANDLE
//
Status = gBS->InstallMultipleProtocolInterfaces (
&NewNotify->NotifyHandle,
&gSimpleTextInExNotifyGuid,
NULL,
NULL
);
ASSERT_EFI_ERROR (Status);
*NotifyHandle = NewNotify->NotifyHandle;
return EFI_SUCCESS;
}
/**
Remove a registered notification function from a particular keystroke.
@param This Protocol instance pointer.
@param NotificationHandle The handle of the notification function being unregistered.
@retval EFI_SUCCESS The notification function was unregistered successfully.
@retval EFI_INVALID_PARAMETER The NotificationHandle is invalid or opening gSimpleTextInExNotifyGuid
on NotificationHandle fails.
@retval EFI_NOT_FOUND Can not find the matching entry in database.
**/
EFI_STATUS
EFIAPI
USBKeyboardUnregisterKeyNotify (
IN EFI_SIMPLE_TEXT_INPUT_EX_PROTOCOL *This,
IN EFI_HANDLE NotificationHandle
)
{
USB_KB_DEV *UsbKeyboardDevice;
EFI_STATUS Status;
KEYBOARD_CONSOLE_IN_EX_NOTIFY *CurrentNotify;
LIST_ENTRY *Link;
if (NotificationHandle == NULL) {
return EFI_INVALID_PARAMETER;
}
UsbKeyboardDevice = TEXT_INPUT_EX_USB_KB_DEV_FROM_THIS (This);
Status = gBS->OpenProtocol (
NotificationHandle,
&gSimpleTextInExNotifyGuid,
NULL,
NULL,
NULL,
EFI_OPEN_PROTOCOL_TEST_PROTOCOL
);
if (EFI_ERROR (Status)) {
return EFI_INVALID_PARAMETER;
}
for (Link = UsbKeyboardDevice->NotifyList.ForwardLink; Link != &UsbKeyboardDevice->NotifyList; Link = Link->ForwardLink) {
CurrentNotify = CR (
Link,
KEYBOARD_CONSOLE_IN_EX_NOTIFY,
NotifyEntry,
USB_KB_CONSOLE_IN_EX_NOTIFY_SIGNATURE
);
if (CurrentNotify->NotifyHandle == NotificationHandle) {
//
// Remove the notification function from NotifyList and free resources
//
RemoveEntryList (&CurrentNotify->NotifyEntry);
Status = gBS->UninstallMultipleProtocolInterfaces (
CurrentNotify->NotifyHandle,
&gSimpleTextInExNotifyGuid,
NULL,
NULL
);
ASSERT_EFI_ERROR (Status);
gBS->FreePool (CurrentNotify);
return EFI_SUCCESS;
}
}
return EFI_NOT_FOUND;
}
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