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/* $NoKeywords:$ */
/**
* @file
*
* Link Optimization Feature.
*
* Contains interface for Link Optimization.
*
* @xrefitem bom "File Content Label" "Release Content"
* @e project: AGESA
* @e sub-project: HyperTransport
* @e \$Revision: 34897 $ @e \$Date: 2010-07-14 10:07:10 +0800 (Wed, 14 Jul 2010) $
*
*/
/*
*****************************************************************************
*
* Copyright (c) 2011, Advanced Micro Devices, Inc.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* * Neither the name of Advanced Micro Devices, Inc. nor the names of
* its contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL ADVANCED MICRO DEVICES, INC. BE LIABLE FOR ANY
* DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
* ***************************************************************************
*
*/
#ifndef _HT_FEAT_OPTIMIZATION_H_
#define _HT_FEAT_OPTIMIZATION_H_
/*----------------------------------------------------------------------------
* Mixed (DEFINITIONS AND MACROS / TYPEDEFS, STRUCTURES, ENUMS)
*
*----------------------------------------------------------------------------
*/
/*-----------------------------------------------------------------------------
* DEFINITIONS AND MACROS
*
*-----------------------------------------------------------------------------
*/
/*----------------------------------------------------------------------------
* FUNCTIONS PROTOTYPE
*
*----------------------------------------------------------------------------
*/
/**
* Translate a desired width setting to the bits to set in the register field.
*/
UINT8
ConvertWidthToBits (
IN UINT8 Value
);
/**
* Access HT Link Control Register.
*
*/
VOID
SetHtControlRegisterBits (
IN PCI_ADDR Reg,
IN UINT8 HiBit,
IN UINT8 LoBit,
IN UINT32 *Value,
IN STATE_DATA *State
);
/**
* Get Link features into system data structure.
*
*/
VOID
GatherLinkData (
IN STATE_DATA *State
);
/**
* Optimize Links.
*
*/
VOID
SelectOptimalWidthAndFrequency (
IN OUT STATE_DATA *State
);
/**
* Change the hardware state for all Links according to the now optimized data in the
* port list data structure.
*
*/
VOID
SetLinkData (
IN STATE_DATA *State
);
/**
* Retry must be enabled on all coherent links if it is enabled on any coherent links.
*
*/
BOOLEAN
IsCoherentRetryFixup (
IN STATE_DATA *State
);
/**
* Find a specific HT capability type.
*
* @retval FALSE the capability was not found
*/
BOOLEAN
DoesDeviceHaveHtSubtypeCap (
IN PCI_ADDR DevicePointer,
IN UINT8 CapSubType,
OUT PCI_ADDR *CapabilityBase,
IN STATE_DATA *State
);
#endif /* _HT_FEAT_OPTIMIZATION_H_ */
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