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103 lines
4.1 KiB
C
103 lines
4.1 KiB
C
/** @file
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The internal include file for WatchDogTimer module.
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Copyright (c) 2006 - 2018, Intel Corporation. All rights reserved.<BR>
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SPDX-License-Identifier: BSD-2-Clause-Patent
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**/
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#ifndef _WATCHDOG_TIMER_H_
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#define _WATCHDOG_TIMER_H_
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#include <Uefi.h>
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#include <Library/DebugLib.h>
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#include <Library/UefiDriverEntryPoint.h>
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#include <Library/ReportStatusCodeLib.h>
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#include <Library/UefiBootServicesTableLib.h>
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#include <Library/UefiRuntimeServicesTableLib.h>
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#include <Protocol/WatchdogTimer.h>
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/**
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Registers a handler that is to be invoked when the watchdog timer fires.
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This function registers a handler that is to be invoked when the watchdog
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timer fires. By default, the EFI_WATCHDOG_TIMER protocol will call the
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Runtime Service ResetSystem() when the watchdog timer fires. If a
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NotifyFunction is registered, then the NotifyFunction will be called before
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the Runtime Service ResetSystem() is called. If NotifyFunction is NULL, then
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the watchdog handler is unregistered. If a watchdog handler is registered,
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then EFI_SUCCESS is returned. If an attempt is made to register a handler
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when a handler is already registered, then EFI_ALREADY_STARTED is returned.
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If an attempt is made to uninstall a handler when a handler is not installed,
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then return EFI_INVALID_PARAMETER.
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@param This The EFI_WATCHDOG_TIMER_ARCH_PROTOCOL instance.
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@param NotifyFunction The function to call when the watchdog timer fires. If this
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is NULL, then the handler will be unregistered.
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@retval EFI_SUCCESS The watchdog timer handler was registered or unregistered.
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@retval EFI_ALREADY_STARTED NotifyFunction is not NULL, and a handler is already registered.
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@retval EFI_INVALID_PARAMETER NotifyFunction is NULL, and a handler was not previously registered.
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**/
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EFI_STATUS
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EFIAPI
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WatchdogTimerDriverRegisterHandler (
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IN EFI_WATCHDOG_TIMER_ARCH_PROTOCOL *This,
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IN EFI_WATCHDOG_TIMER_NOTIFY NotifyFunction
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);
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/**
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Sets the amount of time in the future to fire the watchdog timer.
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This function sets the amount of time to wait before firing the watchdog
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timer to TimerPeriod 100 ns units. If TimerPeriod is 0, then the watchdog
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timer is disabled.
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@param This The EFI_WATCHDOG_TIMER_ARCH_PROTOCOL instance.
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@param TimerPeriod The amount of time in 100 ns units to wait before the watchdog
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timer is fired. If TimerPeriod is zero, then the watchdog
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timer is disabled.
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@retval EFI_SUCCESS The watchdog timer has been programmed to fire in Time
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100 ns units.
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@retval EFI_DEVICE_ERROR A watchdog timer could not be programmed due to a device
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error.
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**/
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EFI_STATUS
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EFIAPI
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WatchdogTimerDriverSetTimerPeriod (
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IN EFI_WATCHDOG_TIMER_ARCH_PROTOCOL *This,
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IN UINT64 TimerPeriod
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);
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/**
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Retrieves the amount of time in 100 ns units that the system will wait before firing the watchdog timer.
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This function retrieves the amount of time the system will wait before firing
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the watchdog timer. This period is returned in TimerPeriod, and EFI_SUCCESS
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is returned. If TimerPeriod is NULL, then EFI_INVALID_PARAMETER is returned.
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@param This The EFI_WATCHDOG_TIMER_ARCH_PROTOCOL instance.
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@param TimerPeriod A pointer to the amount of time in 100 ns units that the system
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will wait before the watchdog timer is fired. If TimerPeriod of
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zero is returned, then the watchdog timer is disabled.
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@retval EFI_SUCCESS The amount of time that the system will wait before
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firing the watchdog timer was returned in TimerPeriod.
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@retval EFI_INVALID_PARAMETER TimerPeriod is NULL.
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**/
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EFI_STATUS
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EFIAPI
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WatchdogTimerDriverGetTimerPeriod (
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IN EFI_WATCHDOG_TIMER_ARCH_PROTOCOL *This,
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IN UINT64 *TimerPeriod
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);
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#endif
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