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/* $NoKeywords:$ */
/**
* @file
*
* Coherent Feature Northbridge common routines.
*
* Provide access to hardware for routing, coherent discovery.
*
* @xrefitem bom "File Content Label" "Release Content"
* @e project: AGESA
* @e sub-project: HyperTransport
* @e \$Revision: 44324 $ @e \$Date: 2010-12-22 02:16:51 -0700 (Wed, 22 Dec 2010) $
*
*/
/*
*****************************************************************************
*
* Copyright (C) 2012 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.
*
* ***************************************************************************
*
*/
/*
*----------------------------------------------------------------------------
* MODULES USED
*
*----------------------------------------------------------------------------
*/
/***************************************************************************
*** FAMILY/NORTHBRIDGE GENERIC FUNCTIONS ***
***************************************************************************/
/**
* Establish a Temporary route from one Node to another.
*
*/
VOID
WriteRoutingTable (
IN UINT8 Node,
IN UINT8 Target,
IN UINT8 Link,
IN NORTHBRIDGE *Nb
);
/**
* Modifies the NodeID register on the target Node
*
*/
VOID
WriteNodeID (
IN UINT8 Node,
IN UINT8 NodeID,
IN NORTHBRIDGE *Nb
);
/**
* Read the Default Link
*
*/
UINT8
ReadDefaultLink (
IN UINT8 Node,
IN NORTHBRIDGE *Nb
);
/**
* Turns routing tables on for a given Node
*
*/
VOID
EnableRoutingTables (
IN UINT8 Node,
IN NORTHBRIDGE *Nb
);
/**
* Turns routing tables off for a given Node
*
*/
VOID
DisableRoutingTables (
IN UINT8 Node,
IN NORTHBRIDGE *Nb
);
/**
* Verify that the Link is coherent, connected, and ready
*
*/
BOOLEAN
VerifyLinkIsCoherent (
IN UINT8 Node,
IN UINT8 Link,
IN NORTHBRIDGE *Nb
);
/**
* Read the token stored in the scratchpad register field.
*
*/
UINT8
ReadToken (
IN UINT8 Node,
IN NORTHBRIDGE *Nb
);
/**
* Write the token stored in the scratchpad register
*
*/
VOID
WriteToken (
IN UINT8 Node,
IN UINT8 Value,
IN NORTHBRIDGE *Nb
);
/**
* Full Routing Table Register initialization
*
*/
VOID
WriteFullRoutingTable (
IN UINT8 Node,
IN UINT8 Target,
IN UINT8 ReqLink,
IN UINT8 RspLink,
IN UINT32 BroadcastLinks,
IN NORTHBRIDGE *Nb
);
/**
* Determine whether a Node is compatible with the discovered configuration so far.
*
*/
BOOLEAN
IsIllegalTypeMix (
IN UINT8 Node,
IN NORTHBRIDGE *Nb
);
/**
* Fix (hopefully) exceptional conditions.
*
*/
BOOLEAN
HandleSpecialNodeCase (
IN UINT8 Node,
IN UINT8 Link,
IN STATE_DATA *State,
IN NORTHBRIDGE *Nb
);
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