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/** @file
Definitions for HECI driver
@copyright
Copyright (c) 2006 - 2012 Intel Corporation. All rights reserved
This software and associated documentation (if any) is furnished
under a license and may only be used or copied in accordance
with the terms of the license. Except as permitted by such
license, no part of this software or documentation may be
reproduced, stored in a retrieval system, or transmitted in any
form or by any means without the express written consent of
Intel Corporation.
This file contains an 'Intel Peripheral Driver' and uniquely
identified as "Intel Reference Module" and is
licensed for Intel CPUs and chipsets under the terms of your
license agreement with Intel or your vendor. This file may
be modified by the user, subject to additional terms of the
license agreement
**/
#ifndef _HECI_HPET_H
#define _HECI_HPET_H
#include "EdkIIGlueDxe.h"
#include "MeAccess.h"
#include "HeciRegs.h"
#include "Pci22.h"
/**
Store the value of High Performance Timer
@param[in] None
@retval None
**/
VOID
SaveHpet (
VOID
)
;
/**
Restore the value of High Performance Timer
@param[in] None
@retval None
**/
VOID
RestoreHpet (
VOID
)
;
/**
Used for calculating timeouts
@param[out] Start Snapshot of the HPET timer
@param[out] End Calculated time when timeout period will be done
@param[in] Time Timeout period in microseconds
@retval None
**/
VOID
StartTimer (
OUT UINT32 *Start,
OUT UINT32 *End,
IN UINT32 Time
)
;
/**
Used to determine if a timeout has occured.
@param[in] Start Snapshot of the HPET timer when the timeout period started.
@param[in] End Calculated time when timeout period will be done.
@retval EFI_TIMEOUT Timeout occured.
@retval EFI_SUCCESS Not yet timed out
**/
EFI_STATUS
Timeout (
IN UINT32 Start,
IN UINT32 End
)
;
/**
Enable Hpet function.
@param[in] None.
@retval None
**/
VOID
EnableHpet (
VOID
)
;
/**
Delay for at least the request number of microseconds
@param[in] delayTime Number of microseconds to delay.
@retval None
**/
VOID
IoDelay (
IN UINT32 delayTime
)
;
#endif // _HECI_HPET_H
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