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/** @file
The internal header file includes the common header files, defines
internal functions used by WatchDogTimer module.
Copyright (c) 2006 - 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.
**/
#ifndef _WATCHDOG_TIMER_H_
#define _WATCHDOG_TIMER_H_
#include <Uefi.h>
#include <Library/DebugLib.h>
#include <Library/UefiDriverEntryPoint.h>
#include <Library/ReportStatusCodeLib.h>
#include <Library/UefiBootServicesTableLib.h>
#include <Library/UefiRuntimeServicesTableLib.h>
#include <Library/PcdLib.h>
#include <Protocol/WatchdogTimer.h>
/**
This function registers a handler that is to be invoked when the watchdog
timer fires. By default, the EFI_WATCHDOG_TIMER protocol will call the
Runtime Service ResetSystem() when the watchdog timer fires. If a
NotifyFunction is registered, then the NotifyFunction will be called before
the Runtime Service ResetSystem() is called. If NotifyFunction is NULL, then
the watchdog handler is unregistered. If a watchdog handler is registered,
then EFI_SUCCESS is returned. If an attempt is made to register a handler
when a handler is already registered, then EFI_ALREADY_STARTED is returned.
If an attempt is made to uninstall a handler when a handler is not installed,
then return EFI_INVALID_PARAMETER.
@param This The EFI_WATCHDOG_TIMER_ARCH_PROTOCOL instance.
@param NotifyFunction The function to call when the watchdog timer fires. If this
is NULL, then the handler will be unregistered.
@return EFI_SUCCESS The watchdog timer handler was registered or unregistered.
@return EFI_ALREADY_STARTED NotifyFunction is not NULL, and a handler is already registered.
@return EFI_INVALID_PARAMETER NotifyFunction is NULL, and a handler was not previously registered.
**/
EFI_STATUS
EFIAPI
WatchdogTimerDriverRegisterHandler (
IN EFI_WATCHDOG_TIMER_ARCH_PROTOCOL *This,
IN EFI_WATCHDOG_TIMER_NOTIFY NotifyFunction
);
/**
This function sets the amount of time to wait before firing the watchdog
timer to TimerPeriod 100 nS units. If TimerPeriod is 0, then the watchdog
timer is disabled.
@param This The EFI_WATCHDOG_TIMER_ARCH_PROTOCOL instance.
@param TimerPeriod The amount of time in 100 nS units to wait before the watchdog
timer is fired. If TimerPeriod is zero, then the watchdog
timer is disabled.
@return EFI_SUCCESS The watchdog timer has been programmed to fire in Time
100 nS units.
@return EFI_DEVICE_ERROR A watchdog timer could not be programmed due to a device
error.
**/
EFI_STATUS
EFIAPI
WatchdogTimerDriverSetTimerPeriod (
IN EFI_WATCHDOG_TIMER_ARCH_PROTOCOL *This,
IN UINT64 TimerPeriod
);
/**
This function retrieves the amount of time the system will wait before firing
the watchdog timer. This period is returned in TimerPeriod, and EFI_SUCCESS
is returned. If TimerPeriod is NULL, then EFI_INVALID_PARAMETER is returned.
@param This The EFI_WATCHDOG_TIMER_ARCH_PROTOCOL instance.
@param TimerPeriod A pointer to the amount of time in 100 nS units that the system
will wait before the watchdog timer is fired. If TimerPeriod of
zero is returned, then the watchdog timer is disabled.
@return EFI_SUCCESS The amount of time that the system will wait before
firing the watchdog timer was returned in TimerPeriod.
@return EFI_INVALID_PARAMETER TimerPeriod is NULL.
**/
EFI_STATUS
EFIAPI
WatchdogTimerDriverGetTimerPeriod (
IN EFI_WATCHDOG_TIMER_ARCH_PROTOCOL *This,
IN UINT64 *TimerPeriod
);
/**
Initialize the Watchdog Timer Architectural Protocol driver.
@param ImageHandle ImageHandle of the loaded driver.
@param SystemTable Pointer to the System Table.
@return EFI_SUCCESS Timer Architectural Protocol created.
**/
EFI_STATUS
EFIAPI
WatchdogTimerDriverInitialize (
IN EFI_HANDLE ImageHandle,
IN EFI_SYSTEM_TABLE *SystemTable
);
#endif
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