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/* IBM_PROLOG_BEGIN_TAG */
/* This is an automatically generated prolog. */
/* */
/* $Source: src/usr/diag/prdf/common/plat/mem/prdfMemRank.H $ */
/* */
/* OpenPOWER HostBoot Project */
/* */
/* Contributors Listed Below - COPYRIGHT 2016,2017 */
/* [+] 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 prdfMemRank.H
* @brief Memory rank container class for Centaur MBA and P9 MCBIST.
*/
#ifndef __prdfMemRank_H
#define __prdfMemRank_H
#include <prdfAssert.h>
#include <prdf_types.h>
namespace PRDF
{
//------------------------------------------------------------------------------
// Class MemRank
//------------------------------------------------------------------------------
/** @brief Simple container for a memory rank.
* @note These ranks are relative to the MBA and MCA targets. Therefore, they
* do not contain information like the port, which is needed for MCBIST
* targets. So that information will need to be derived elsewhere.
*/
class MemRank
{
public: // enums, constants
enum
{
MAX_DSLCT_PER_PORT = 2, ///< DIMM select per port
MAX_RSLCT_PER_DSLCT = 4, ///< rank select per DIMM select
MAX_MRNK_PER_PORT = MAX_DSLCT_PER_PORT * MAX_RSLCT_PER_DSLCT,
MAX_SRNK_PER_MRNK = 8,
};
public: // functions
/** @brief Default constructor */
MemRank() = default;
/**
* @brief Constructor from components.
* @param i_mrank The 3-bit master rank (combined DIMM slct and rank slct).
* @param i_srank The 3-bit slave rank.
*/
explicit MemRank( uint8_t i_mrnk, uint8_t i_srnk = 0 ) :
iv_mrnk(i_mrnk), iv_srnk(i_srnk)
{
PRDF_ASSERT( iv_mrnk < MAX_MRNK_PER_PORT );
PRDF_ASSERT( iv_srnk < MAX_SRNK_PER_MRNK );
}
/** @return The master rank (combined DIMM slct and rank slct). */
uint8_t getMaster() const { return iv_mrnk; }
/** @return The slave rank. */
uint8_t getSlave() const { return iv_srnk; }
/** @return The master DIMM select. */
uint8_t getDimmSlct() const { return iv_mrnk >> 2; }
/** @return The master rank select. */
uint8_t getRankSlct() const { return iv_mrnk & 0x3; }
/** @return This value will mostly be used for traces. The first nibble will
* contain the master rank, including DIMM select. The second
* nibble will contain the slave rank. For example, 0x41 will be
* master rank 4, slave rank 1. */
uint8_t getKey() const { return getMaster() << 4 | getSlave(); }
/** @brief '==' operator */
bool operator==( const MemRank & i_rank ) const
{
return ( (this->getMaster() == i_rank.getMaster()) &&
(this->getSlave() == i_rank.getSlave() ) );
}
/** @brief '!=' operator */
bool operator!=( const MemRank & i_rank ) const
{ return !(*this == i_rank); }
/** @brief '<' operator */
bool operator<( const MemRank & i_rank ) const
{
return ( ( (this->getMaster() < i_rank.getMaster()) ) ||
( (this->getMaster() == i_rank.getMaster()) &&
(this->getSlave() < i_rank.getSlave() ) ) );
}
private: // data
uint8_t iv_mrnk = 0; ///< Master rank (combined DIMM slct and rank slct)
uint8_t iv_srnk = 0; ///< Slave rank
};
} // end namespace PRDF
#endif // __prdfMemRank_H
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