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/* IBM_PROLOG_BEGIN_TAG */
/* This is an automatically generated prolog. */
/* */
/* $Source: src/usr/diag/prdf/common/plat/mem/prdfMemThresholds.C $ */
/* */
/* OpenPOWER HostBoot Project */
/* */
/* Contributors Listed Below - COPYRIGHT 2013,2017 */
/* [+] International Business Machines Corp. */
/* */
/* */
/* Licensed under the Apache License, Version 2.0 (the "License"); */
/* you may not use this file except in compliance with the License. */
/* You may obtain a copy of the License at */
/* */
/* http://www.apache.org/licenses/LICENSE-2.0 */
/* */
/* Unless required by applicable law or agreed to in writing, software */
/* distributed under the License is distributed on an "AS IS" BASIS, */
/* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or */
/* implied. See the License for the specific language governing */
/* permissions and limitations under the License. */
/* */
/* IBM_PROLOG_END_TAG */
/** @file prdfMemThresholds.C
* @brief Utility functions used to get specific memory thresholds.
*/
// Framework includes
#include <prdfExtensibleChip.H>
#include <prdfMfgThresholdMgr.H>
#include <prdfPlatServices.H>
// Platform includes
#include <prdfMemThresholds.H>
#include <prdfMemUtils.H>
using namespace TARGETING;
namespace PRDF
{
using namespace PlatServices;
enum DefaultThresholds
{
MCA_RCD_PARITY_NON_MNFG_TH = 32, ///< Non-MNFG RCD parity error TH
MCA_IUE_NON_MNFG_TH = 8, ///< Non-MNFG IUE TH
MBA_RCE_NON_MNFG_TH = 8, ///< Non-MNFG RCE TH
MBA_SCRUB_CE_NON_MNFG_TH = 80, ///< Non-MNFG Scrub soft/inter CE TH
};
//------------------------------------------------------------------------------
/**
* @brief Returns the manufacturing memory CE thresholds Per 2GB ( base ).
*/
uint8_t getMnfgCeTh()
{
#ifndef __HOSTBOOT_RUNTIME
return MfgThresholdMgr::getInstance()->
getThreshold( TARGETING::ATTR_MNFG_TH_CEN_MBA_IPL_SOFT_CE_TH_ALGO );
#else
return MfgThresholdMgr::getInstance()->
getThreshold( TARGETING::ATTR_MNFG_TH_CEN_MBA_RT_SOFT_CE_TH_ALGO );
#endif
}
//------------------------------------------------------------------------------
#ifdef __HOSTBOOT_MODULE
ThresholdResolution::ThresholdPolicy getRcdParityTh()
{
uint32_t th = MCA_RCD_PARITY_NON_MNFG_TH;
if ( mfgMode() )
{
th = MfgThresholdMgr::getInstance()->
getThreshold(ATTR_MNFG_TH_RCD_PARITY_ERRORS);
}
return ThresholdResolution::ThresholdPolicy( th,
ThresholdResolution::ONE_DAY );
}
#endif
//------------------------------------------------------------------------------
#ifdef __HOSTBOOT_MODULE
ThresholdResolution::ThresholdPolicy getIueTh()
{
uint32_t th = MCA_IUE_NON_MNFG_TH;
if ( mfgMode() )
{
th = MfgThresholdMgr::getInstance()->
getThreshold(ATTR_MNFG_TH_MEMORY_IUES);
}
return ThresholdResolution::ThresholdPolicy( th,
ThresholdResolution::ONE_DAY );
}
#endif
//------------------------------------------------------------------------------
ThresholdResolution::ThresholdPolicy getRceThreshold()
{
uint32_t th = MBA_RCE_NON_MNFG_TH;
if ( mfgMode() )
{
th = MfgThresholdMgr::getInstance()->
getThreshold( ATTR_MNFG_TH_CEN_MBA_RT_RCE_PER_RANK );
if( th > MBA_RCE_NON_MNFG_TH ) th = MBA_RCE_NON_MNFG_TH;
}
return ThresholdResolution::ThresholdPolicy( th,
ThresholdResolution::ONE_DAY );
}
//------------------------------------------------------------------------------
template <TYPE T>
void getMnfgMemCeTh( ExtensibleChip * i_chip, const MemRank & i_rank,
uint32_t & o_cePerDram, uint32_t & o_cePerRank,
uint32_t & o_cePerDimm )
{
// Get base threshold ( 2GB ).
uint8_t baseTh = getMnfgCeTh();
// A base threhold of 0 indicates there should be no thresholding.
if ( 0 == baseTh )
{
o_cePerDram = o_cePerRank = o_cePerDimm =
MfgThreshold::INFINITE_LIMIT_THR;
}
else
{
// Get DRAM size
uint8_t size = MemUtils::getDramSize<T>( i_chip, i_rank.getDimmSlct() );
// Get number of ranks per DIMM select.
uint8_t rankCount = getNumRanksPerDimm<T>( i_chip->getTrgt(),
i_rank.getDimmSlct() );
PRDF_ASSERT( 0 != rankCount ); // Code bug.
// Get number of allowed CEs.
uint8_t baseAllowed = baseTh - 1;
// Calculate CEs per DRAM.
// The DRAM size is in MBAXCR[6:7], where 0 = 2Gb, 1 = 4Gb, 2 = 8Gb,
// and 3 = 16 Gb. So the allowed CEs per DRAM can be calculated with
// the following:
// perDram = base * 2^(MBAXCR[6:7]+1) * (9/16)
// or, perDram = (base << MBAXCR[6:7]+1) * (9/16)
uint32_t computeBase = (baseAllowed << (size+1)) * 9;
o_cePerDram = (computeBase + 8) / 16;
// Calculate CEs per DIMM.
o_cePerDimm = ((computeBase * (2 + rankCount)) + 8) / 16;
// Calculate CEs per rank per DIMM.
// Same as perDimm where rankCount is 1;
o_cePerRank = ((computeBase * (2 + 1)) + 8) / 16;
}
}
// need these templates to avoid linker errors
template
void getMnfgMemCeTh<TYPE_MCA>( ExtensibleChip * i_chip, const MemRank & i_rank,
uint32_t & o_cePerDram, uint32_t & o_cePerRank,
uint32_t & o_cePerDimm );
template
void getMnfgMemCeTh<TYPE_MBA>( ExtensibleChip * i_chip, const MemRank & i_rank,
uint32_t & o_cePerDram, uint32_t & o_cePerRank,
uint32_t & o_cePerDimm );
//------------------------------------------------------------------------------
template <TYPE T>
uint32_t getScrubCeThreshold( ExtensibleChip * i_chip, const MemRank & i_rank )
{
uint32_t o_thr = MBA_SCRUB_CE_NON_MNFG_TH;
if ( mfgMode() )
{
uint32_t junk1 = 0, junk2 = 0;
getMnfgMemCeTh<T>( i_chip, i_rank, o_thr, junk1, junk2 );
// getMnfgMemCeTh() returns the number of CEs allowed. Will need to add
// one to get the real threshold.
o_thr++;
}
return o_thr;
}
// need these templates to avoid linker errors
template
uint32_t getScrubCeThreshold<TYPE_MCA>( ExtensibleChip * i_chip,
const MemRank & i_rank );
template
uint32_t getScrubCeThreshold<TYPE_MBA>( ExtensibleChip * i_chip,
const MemRank & i_rank );
} // end namespace PRDF
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