audk/EmulatorPkg/TimerDxe/Timer.h

/*++ @file
  Emu Emulation Architectural Protocol Driver as defined in UEFI/PI.
  This Timer module uses an UNIX Thread to simulate the timer-tick driven
  timer service.

Copyright (c) 2006, Intel Corporation. All rights reserved.<BR>
Portions copyright (c) 2010 - 2011, Apple Inc. 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 _TIMER_H_
#define _TIMER_H_




//
// Legal timer value range in 100 ns units
//
#define TIMER_MINIMUM_VALUE 0
#define TIMER_MAXIMUM_VALUE (0x100000000ULL - 1)

//
// Default timer value in 100 ns units (50 ms)
//
#define DEFAULT_TIMER_TICK_DURATION 500000

//
// Function Prototypes
//
EFI_STATUS
EFIAPI
EmuTimerDriverInitialize (
  IN EFI_HANDLE        ImageHandle,
  IN EFI_SYSTEM_TABLE  *SystemTable
  );

EFI_STATUS
EFIAPI
EmuTimerDriverRegisterHandler (
  IN EFI_TIMER_ARCH_PROTOCOL  *This,
  IN EFI_TIMER_NOTIFY         NotifyFunction
  );

EFI_STATUS
EFIAPI
EmuTimerDriverSetTimerPeriod (
  IN EFI_TIMER_ARCH_PROTOCOL  *This,
  IN UINT64                   TimerPeriod
  );

EFI_STATUS
EFIAPI
EmuTimerDriverGetTimerPeriod (
  IN EFI_TIMER_ARCH_PROTOCOL   *This,
  OUT UINT64                   *TimerPeriod
  );

EFI_STATUS
EFIAPI
EmuTimerDriverGenerateSoftInterrupt (
  IN EFI_TIMER_ARCH_PROTOCOL  *This
  );

#endif