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/* IBM_PROLOG_BEGIN_TAG */
/* This is an automatically generated prolog. */
/* */
/* $Source: src/import/chips/ocmb/explorer/procedures/hwp/memory/lib/dimm/exp_rank.H $ */
/* */
/* OpenPOWER HostBoot Project */
/* */
/* Contributors Listed Below - COPYRIGHT 2019 */
/* [+] 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 exp_rank.H
/// @brief Explorer rank definitions
///
// *HWP HWP Owner: Andre Marin <aamarin@us.ibm.com>
// *HWP HWP Backup: Stephen Glancy <sglancy@us.ibm.com>
// *HWP Team: Memory
// *HWP Level: 2
// *HWP Consumed by: FSP:HB
#ifndef _MSS_EXP_RANK_H_
#define _MSS_EXP_RANK_H_
#include <fapi2.H>
#include <generic/memory/lib/utils/mss_rank.H>
namespace mss
{
namespace rank
{
///
/// @brief Rank traits for explorer
///
template <>
class rankTraits<mss::mc_type::EXPLORER>
{
public:
static constexpr uint8_t MAX_DIMMS_PER_PORT = 2;
static constexpr uint8_t MAX_RANKS_PER_DIMM = 4;
static constexpr uint8_t RANK_INDEX_STEP = 4;
// Note! a configuration of 2 4-rank dimms is not possible.
// In this hypothetical scenario, the value for phy-rank would not
// be valid / does not apply, as there will be some rollover.
static constexpr uint8_t PHY_RANK_INDEX_STEP = 2;
};
///
/// @brief Return a vector of rank numbers which represent the primary rank pairs for this port
/// @param[in] i_target port target on which to operate
/// @param[out] o_ranks a vector of ranks
/// @return FAPI@_RC_SUCCESS iff all is ok
inline fapi2::ReturnCode primary_ranks( const fapi2::Target<fapi2::TARGET_TYPE_MEM_PORT>& i_target,
std::vector< uint64_t >& o_rps )
{
o_rps.clear();
std::vector<mss::rank::info<mss::mc_type::EXPLORER>> l_rank_info_vect;
FAPI_TRY(mss::rank::ranks_on_port<mss::mc_type::EXPLORER>(i_target, l_rank_info_vect));
// Loop through and assemble the ranks
for(const auto& l_rank_info : l_rank_info_vect)
{
o_rps.push_back(l_rank_info.get_port_rank());
}
fapi_try_exit:
return fapi2::current_err;
}
///
/// @brief Return a vector of rank numbers which represent the primary rank pairs for this dimm
/// @param[in] i_target DIMM target on which to operate
/// @param[out] o_ranks a vector of ranks
/// @return FAPI@_RC_SUCCESS iff all is ok
inline fapi2::ReturnCode primary_ranks( const fapi2::Target<fapi2::TARGET_TYPE_DIMM>& i_target,
std::vector< uint64_t >& o_rps )
{
o_rps.clear();
std::vector<mss::rank::info<mss::mc_type::EXPLORER>> l_rank_info_vect;
FAPI_TRY(mss::rank::ranks_on_dimm<mss::mc_type::EXPLORER>(i_target, l_rank_info_vect));
// Loop through and assemble the ranks
for(const auto& l_rank_info : l_rank_info_vect)
{
o_rps.push_back(l_rank_info.get_port_rank());
}
fapi_try_exit:
return fapi2::current_err;
}
///
/// @brief Return the *port relative position* of the DIMM which posesses this rank
/// @param[in] i_rank the rank number.
/// @return the relative position of the DIMM which contains this rank.
inline size_t get_dimm_from_rank(const uint64_t i_rank)
{
using TT = rankTraits<mss::mc_type::EXPLORER>;
return i_rank / TT::MAX_RANKS_PER_DIMM;
}
} // namespace rank
} // namespace mss
#endif
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