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audk/EdkModulePkg/Bus/Usb/UsbKb/Dxe/efikey.c

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/*++
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:
EfiKey.c
Abstract:
USB Keyboard Driver
Revision History
--*/
#include "efikey.h"
#include "keyboard.h"
//
// Prototypes
// Driver model protocol interface
//
EFI_STATUS
EFIAPI
USBKeyboardDriverBindingEntryPoint (
IN EFI_HANDLE ImageHandle,
IN EFI_SYSTEM_TABLE *SystemTable
);
EFI_STATUS
EFIAPI
USBKeyboardDriverBindingSupported (
IN EFI_DRIVER_BINDING_PROTOCOL *This,
IN EFI_HANDLE Controller,
IN EFI_DEVICE_PATH_PROTOCOL *RemainingDevicePath
);
EFI_STATUS
EFIAPI
USBKeyboardDriverBindingStart (
IN EFI_DRIVER_BINDING_PROTOCOL *This,
IN EFI_HANDLE Controller,
IN EFI_DEVICE_PATH_PROTOCOL *RemainingDevicePath
);
EFI_STATUS
EFIAPI
USBKeyboardDriverBindingStop (
IN EFI_DRIVER_BINDING_PROTOCOL *This,
IN EFI_HANDLE Controller,
IN UINTN NumberOfChildren,
IN EFI_HANDLE *ChildHandleBuffer
);
//
// Simple Text In Protocol Interface
//
STATIC
EFI_STATUS
EFIAPI
USBKeyboardReset (
IN EFI_SIMPLE_TEXT_IN_PROTOCOL *This,
IN BOOLEAN ExtendedVerification
);
STATIC
EFI_STATUS
EFIAPI
USBKeyboardReadKeyStroke (
IN EFI_SIMPLE_TEXT_IN_PROTOCOL *This,
OUT EFI_INPUT_KEY *Key
);
STATIC
VOID
EFIAPI
USBKeyboardWaitForKey (
IN EFI_EVENT Event,
IN VOID *Context
);
//
// Helper functions
//
STATIC
EFI_STATUS
USBKeyboardCheckForKey (
IN USB_KB_DEV *UsbKeyboardDevice
);
//
// USB Keyboard Driver Global Variables
//
EFI_DRIVER_BINDING_PROTOCOL gUsbKeyboardDriverBinding = {
USBKeyboardDriverBindingSupported,
USBKeyboardDriverBindingStart,
USBKeyboardDriverBindingStop,
0x10,
NULL,
NULL
};
EFI_STATUS
EFIAPI
USBKeyboardDriverBindingSupported (
IN EFI_DRIVER_BINDING_PROTOCOL *This,
IN EFI_HANDLE Controller,
IN EFI_DEVICE_PATH_PROTOCOL *RemainingDevicePath
)
/*++
Routine Description:
Supported.
Arguments:
This - EFI_DRIVER_BINDING_PROTOCOL
Controller - Controller handle
RemainingDevicePath - EFI_DEVICE_PATH_PROTOCOL
Returns:
EFI_STATUS
--*/
{
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;
}
EFI_STATUS
EFIAPI
USBKeyboardDriverBindingStart (
IN EFI_DRIVER_BINDING_PROTOCOL *This,
IN EFI_HANDLE Controller,
IN EFI_DEVICE_PATH_PROTOCOL *RemainingDevicePath
)
/*++
Routine Description:
Start.
Arguments:
This - EFI_DRIVER_BINDING_PROTOCOL
Controller - Controller handle
RemainingDevicePath - EFI_DEVICE_PATH_PROTOCOL
Returns:
EFI_SUCCESS - Success
EFI_OUT_OF_RESOURCES - Can't allocate memory
EFI_UNSUPPORTED - The Start routine fail
--*/
{
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,
(EFI_PERIPHERAL_KEYBOARD | EFI_P_PC_ENABLE)
);
//
// This is pretty close to keyboard detection, so log progress
//
KbdReportStatusCode (
UsbKeyboardDevice->DevicePath,
EFI_PROGRESS_CODE,
(EFI_PERIPHERAL_KEYBOARD | EFI_P_PC_PRESENCE_DETECT)
);
//
// 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));
//UsbKeyboardDevice->IntEndpointDescriptor = 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;
Status = gBS->CreateEvent (
EFI_EVENT_NOTIFY_WAIT,
EFI_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,
&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,
&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,
&gEfiHotPlugDeviceGuid,
NULL,
NULL
);
gBS->CloseEvent (UsbKeyboardDevice->SimpleInput.WaitForKey);
gBS->FreePool (UsbKeyboardDevice);
gBS->CloseProtocol (
Controller,
&gEfiUsbIoProtocolGuid,
This->DriverBindingHandle,
Controller
);
return Status;
}
UsbKeyboardDevice->ControllerNameTable = NULL;
AddUnicodeString (
"eng",
gUsbKeyboardComponentName.SupportedLanguages,
&UsbKeyboardDevice->ControllerNameTable,
(CHAR16 *) L"Generic Usb Keyboard"
);
return EFI_SUCCESS;
}
EFI_STATUS
EFIAPI
USBKeyboardDriverBindingStop (
IN EFI_DRIVER_BINDING_PROTOCOL *This,
IN EFI_HANDLE Controller,
IN UINTN NumberOfChildren,
IN EFI_HANDLE *ChildHandleBuffer
)
/*++
Routine Description:
Stop.
Arguments:
This - EFI_DRIVER_BINDING_PROTOCOL
Controller - Controller handle
NumberOfChildren - Child handle number
ChildHandleBuffer - Child handle buffer
Returns:
EFI_SUCCESS - Success
EFI_UNSUPPORTED - Can't support
--*/
{
EFI_STATUS Status;
EFI_SIMPLE_TEXT_IN_PROTOCOL *SimpleInput;
USB_KB_DEV *UsbKeyboardDevice;
EFI_USB_IO_PROTOCOL *UsbIo;
Status = gBS->OpenProtocol (
Controller,
&gEfiSimpleTextInProtocolGuid,
(VOID **) &SimpleInput,
This->DriverBindingHandle,
Controller,
EFI_OPEN_PROTOCOL_BY_DRIVER
);
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
);
UsbIo = UsbKeyboardDevice->UsbIo;
//
// Uninstall the Asyn Interrupt Transfer from this device
// will disable the key data input from this device
//
KbdReportStatusCode (
UsbKeyboardDevice->DevicePath,
EFI_PROGRESS_CODE,
(EFI_PERIPHERAL_KEYBOARD | EFI_P_PC_DISABLE)
);
//
// 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,
&gEfiHotPlugDeviceGuid,
NULL,
NULL
);
//
// free all the resources.
//
gBS->CloseEvent (UsbKeyboardDevice->RepeatTimer);
gBS->CloseEvent (UsbKeyboardDevice->DelayedRecoveryEvent);
gBS->CloseEvent ((UsbKeyboardDevice->SimpleInput).WaitForKey);
if (UsbKeyboardDevice->ControllerNameTable != NULL) {
FreeUnicodeStringTable (UsbKeyboardDevice->ControllerNameTable);
}
gBS->FreePool (UsbKeyboardDevice);
return Status;
}
EFI_STATUS
EFIAPI
USBKeyboardReset (
IN EFI_SIMPLE_TEXT_IN_PROTOCOL *This,
IN BOOLEAN ExtendedVerification
)
/*++
Routine Description:
Implements EFI_SIMPLE_TEXT_IN_PROTOCOL.Reset() function.
Arguments:
This The EFI_SIMPLE_TEXT_IN_PROTOCOL instance.
ExtendedVerification
Indicates that the driver may perform a more exhaustive
verification operation of the device during reset.
Returns:
EFI_SUCCESS - Success
EFI_DEVICE_ERROR - Hardware Error
--*/
{
EFI_STATUS Status;
USB_KB_DEV *UsbKeyboardDevice;
EFI_USB_IO_PROTOCOL *UsbIo;
UsbKeyboardDevice = USB_KB_DEV_FROM_THIS (This);
UsbIo = UsbKeyboardDevice->UsbIo;
KbdReportStatusCode (
UsbKeyboardDevice->DevicePath,
EFI_PROGRESS_CODE,
(EFI_PERIPHERAL_KEYBOARD | EFI_P_PC_RESET)
);
//
// Non Exhaustive reset:
// only reset private data structures.
//
if (!ExtendedVerification) {
//
// Clear the key buffer of this Usb keyboard
//
KbdReportStatusCode (
UsbKeyboardDevice->DevicePath,
EFI_PROGRESS_CODE,
(EFI_PERIPHERAL_KEYBOARD | EFI_P_KEYBOARD_PC_CLEAR_BUFFER)
);
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;
}
STATIC
EFI_STATUS
EFIAPI
USBKeyboardReadKeyStroke (
IN EFI_SIMPLE_TEXT_IN_PROTOCOL *This,
OUT EFI_INPUT_KEY *Key
)
/*++
Routine Description:
Implements EFI_SIMPLE_TEXT_IN_PROTOCOL.ReadKeyStroke() function.
Arguments:
This The EFI_SIMPLE_TEXT_IN_PROTOCOL instance.
Key A pointer to a buffer that is filled in with the keystroke
information for the key that was pressed.
Returns:
EFI_SUCCESS - Success
--*/
{
USB_KB_DEV *UsbKeyboardDevice;
EFI_STATUS Status;
UINT8 KeyChar;
UsbKeyboardDevice = USB_KB_DEV_FROM_THIS (This);
//
// 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;
}
}
Key->UnicodeChar = 0;
Key->ScanCode = SCAN_NULL;
KeyChar = UsbKeyboardDevice->CurKeyChar;
UsbKeyboardDevice->CurKeyChar = 0;
//
// Translate saved ASCII byte into EFI_INPUT_KEY
//
Status = USBKeyCodeToEFIScanCode (UsbKeyboardDevice, KeyChar, Key);
return Status;
}
STATIC
VOID
EFIAPI
USBKeyboardWaitForKey (
IN EFI_EVENT Event,
IN VOID *Context
)
/*++
Routine Description:
Handler function for WaitForKey event.
Arguments:
Event Event to be signaled when a key is pressed.
Context Points to USB_KB_DEV instance.
Returns:
VOID
--*/
{
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);
}
STATIC
EFI_STATUS
USBKeyboardCheckForKey (
IN USB_KB_DEV *UsbKeyboardDevice
)
/*++
Routine Description:
Check whether there is key pending.
Arguments:
UsbKeyboardDevice The USB_KB_DEV instance.
Returns:
EFI_SUCCESS - Success
--*/
{
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;
}
VOID
KbdReportStatusCode (
IN EFI_DEVICE_PATH_PROTOCOL *DevicePath,
IN EFI_STATUS_CODE_TYPE CodeType,
IN EFI_STATUS_CODE_VALUE Value
)
/*++
Routine Description:
Report Status Code in Usb Bot Driver
Arguments:
DevicePath - Use this to get Device Path
CodeType - Status Code Type
CodeValue - Status Code Value
Returns:
None
--*/
{
REPORT_STATUS_CODE_WITH_DEVICE_PATH (
CodeType,
Value,
DevicePath
);
}
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