4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync/** @file
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync The internal include file for WatchDogTimer module.
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsyncCopyright (c) 2006 - 2008, Intel Corporation. All rights reserved.<BR>
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsyncThis program and the accompanying materials
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsyncare licensed and made available under the terms and conditions of the BSD License
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsyncwhich accompanies this distribution. The full text of the license may be found at
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsynchttp://opensource.org/licenses/bsd-license.php
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsyncTHE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsyncWITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync**/
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync#ifndef _WATCHDOG_TIMER_H_
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync#define _WATCHDOG_TIMER_H_
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync#include <Uefi.h>
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync#include <Library/DebugLib.h>
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync#include <Library/UefiDriverEntryPoint.h>
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync#include <Library/ReportStatusCodeLib.h>
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync#include <Library/UefiBootServicesTableLib.h>
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync#include <Library/UefiRuntimeServicesTableLib.h>
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync#include <Protocol/WatchdogTimer.h>
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync/**
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync Registers a handler that is to be invoked when the watchdog timer fires.
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync This function registers a handler that is to be invoked when the watchdog
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync timer fires. By default, the EFI_WATCHDOG_TIMER protocol will call the
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync Runtime Service ResetSystem() when the watchdog timer fires. If a
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync NotifyFunction is registered, then the NotifyFunction will be called before
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync the Runtime Service ResetSystem() is called. If NotifyFunction is NULL, then
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync the watchdog handler is unregistered. If a watchdog handler is registered,
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync then EFI_SUCCESS is returned. If an attempt is made to register a handler
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync when a handler is already registered, then EFI_ALREADY_STARTED is returned.
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync If an attempt is made to uninstall a handler when a handler is not installed,
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync then return EFI_INVALID_PARAMETER.
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync @param This The EFI_WATCHDOG_TIMER_ARCH_PROTOCOL instance.
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync @param NotifyFunction The function to call when the watchdog timer fires. If this
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync is NULL, then the handler will be unregistered.
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync @retval EFI_SUCCESS The watchdog timer handler was registered or unregistered.
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync @retval EFI_ALREADY_STARTED NotifyFunction is not NULL, and a handler is already registered.
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync @retval EFI_INVALID_PARAMETER NotifyFunction is NULL, and a handler was not previously registered.
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync**/
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsyncEFI_STATUS
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsyncEFIAPI
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsyncWatchdogTimerDriverRegisterHandler (
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync IN EFI_WATCHDOG_TIMER_ARCH_PROTOCOL *This,
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync IN EFI_WATCHDOG_TIMER_NOTIFY NotifyFunction
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync );
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync/**
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync Sets the amount of time in the future to fire the watchdog timer.
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync This function sets the amount of time to wait before firing the watchdog
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync timer to TimerPeriod 100 ns units. If TimerPeriod is 0, then the watchdog
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync timer is disabled.
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync @param This The EFI_WATCHDOG_TIMER_ARCH_PROTOCOL instance.
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync @param TimerPeriod The amount of time in 100 ns units to wait before the watchdog
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync timer is fired. If TimerPeriod is zero, then the watchdog
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync timer is disabled.
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync @retval EFI_SUCCESS The watchdog timer has been programmed to fire in Time
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync 100 ns units.
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync @retval EFI_DEVICE_ERROR A watchdog timer could not be programmed due to a device
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync error.
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync**/
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsyncEFI_STATUS
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsyncEFIAPI
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsyncWatchdogTimerDriverSetTimerPeriod (
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync IN EFI_WATCHDOG_TIMER_ARCH_PROTOCOL *This,
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync IN UINT64 TimerPeriod
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync );
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync/**
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync Retrieves the amount of time in 100 ns units that the system will wait before firing the watchdog timer.
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync This function retrieves the amount of time the system will wait before firing
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync the watchdog timer. This period is returned in TimerPeriod, and EFI_SUCCESS
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync is returned. If TimerPeriod is NULL, then EFI_INVALID_PARAMETER is returned.
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync @param This The EFI_WATCHDOG_TIMER_ARCH_PROTOCOL instance.
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync @param TimerPeriod A pointer to the amount of time in 100 ns units that the system
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync will wait before the watchdog timer is fired. If TimerPeriod of
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync zero is returned, then the watchdog timer is disabled.
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync @retval EFI_SUCCESS The amount of time that the system will wait before
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync firing the watchdog timer was returned in TimerPeriod.
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync @retval EFI_INVALID_PARAMETER TimerPeriod is NULL.
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync**/
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsyncEFI_STATUS
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsyncEFIAPI
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsyncWatchdogTimerDriverGetTimerPeriod (
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync IN EFI_WATCHDOG_TIMER_ARCH_PROTOCOL *This,
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync IN UINT64 *TimerPeriod
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync );
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync#endif