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/* IBM_PROLOG_BEGIN_TAG */
/* This is an automatically generated prolog. */
/* */
/* $Source: src/import/generic/memory/lib/data_engine/data_engine.H $ */
/* */
/* OpenPOWER HostBoot Project */
/* */
/* Contributors Listed Below - COPYRIGHT 2018,2019 */
/* [+] 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 pre_data_init.H
/// @brief Class to set preliminary eff_config attributes
///
// *HWP HWP Owner: Andre Marin <aamarin@us.ibm.com>
// *HWP FW Owner: Stephen Glancy <sglancy@us.ibm.com>
// *HWP Team: Memory
// *HWP Level: 2
// *HWP Consumed by: HB:CI
#ifndef _MSS_GEN_DATA_ENGINE_H_
#define _MSS_GEN_DATA_ENGINE_H_
#include <cstring>
#include <fapi2.H>
#include <generic/memory/lib/utils/shared/mss_generic_consts.H>
#include <generic/memory/lib/data_engine/attr_engine_traits.H>
#include <generic/memory/lib/data_engine/data_engine_utils.H>
#include <generic/memory/lib/spd/spd_utils.H>
#include <generic/memory/lib/utils/conversions.H>
#include <generic/memory/lib/mss_generic_attribute_getters.H>
namespace mss
{
///
/// @brief Alias for function pointer to spd_facade timing methods
///
using spd_facade_fptr = fapi2::ReturnCode (spd::facade::*)(int64_t& o_timing_in_mtb) const;
///
/// @brief Algorithm to calculate SPD timings in nCK
/// @tparam ET SPD fields enumeration (e.g. attr_eff_engine_fields)
/// @tparam F SPD field
/// @tparam OT output type
/// @tparam TT defaulted to setTimingTraits<ET, F>
/// @param[in] i_spd the SPD data
/// @param[out] o_timing_in_ps SPD timing value in picoseconds
/// @return FAPI2_RC_SUCCESS iff okay
///
template < typename ET,
ET F,
typename OT,
typename TT = setTimingTraits<ET, F> >
inline fapi2::ReturnCode calc_spd_time_in_ps(const spd::facade& i_spd,
OT& o_timing_in_ps)
{
const auto l_dimm = i_spd.get_dimm_target();
int64_t l_timing_mtb = 0;
int64_t l_timing_ftb = 0;
int64_t l_mtb = 0;
int64_t l_ftb = 0;
FAPI_TRY( spd::get_timebases(i_spd, l_mtb, l_ftb) );
FAPI_TRY( (i_spd.*TT::get_timing_in_mtb)(l_timing_mtb),
"Failed to get % (in MTB) for %s", TT::TIMING_NAME, spd::c_str(l_dimm) );
FAPI_TRY( (i_spd.*TT::get_timing_in_ftb)(l_timing_ftb),
"Failed to get %s (in FTB) for %s", TT::TIMING_NAME, spd::c_str(l_dimm) );
FAPI_DBG("%s medium timebase (ps): %ld, fine timebase (ps): %ld, %s (MTB): %ld, (FTB): %ld",
spd::c_str(l_dimm), l_mtb, l_ftb, TT::TIMING_NAME, l_timing_mtb, l_timing_ftb );
o_timing_in_ps = spd::calc_timing_from_timebase(l_timing_mtb, l_mtb, l_timing_ftb, l_ftb);
fapi_try_exit:
return fapi2::current_err;
}
///
/// @brief Algorithm to calculate SPD timings in nCK
/// @tparam ET SPD fields enumeration (e.g. attr_eff_engine_fields)
/// @tparam F SPD field
/// @tparam OT output type
/// @tparam TT defaulted to setTimingTraits<ET, F>
/// @param[in] i_spd the SPD data
/// @param[out] o_timing_in_ps SPD timing value in number of clocks (nCK)
/// @return FAPI2_RC_SUCCESS iff okay
///
template < typename ET,
ET F,
typename OT,
typename TT = setTimingTraits<ET, F> >
inline fapi2::ReturnCode calc_spd_time_in_nck(const spd::facade& i_spd,
OT& o_timing_in_nck)
{
const auto l_dimm = i_spd.get_dimm_target();
// Calculate the DIMM speed in picoseconds (a.k.a tCK == clock period)
int64_t l_tck_in_ps = 0;
uint64_t l_freq = 0;
FAPI_TRY( attr::get_freq(mss::find_target<fapi2::TARGET_TYPE_MEM_PORT>(l_dimm), l_freq) );
FAPI_TRY( freq_to_ps(l_freq, l_tck_in_ps),
"Failed to calculate clock period (tCK) for %s", spd::c_str(l_dimm) );
{
// Calculate the desired timing in ps
int64_t l_timing_in_ps = 0;
FAPI_TRY( (calc_spd_time_in_ps<ET, F>(i_spd, l_tck_in_ps)) );
// Calculate nck
FAPI_TRY( spd::calc_nck(l_timing_in_ps, l_tck_in_ps, spd::INVERSE_DDR4_CORRECTION_FACTOR, o_timing_in_nck),
"Error in calculating %s (nCK) for target %s, with value of %d",
TT::TIMING_NAME, spd::c_str(l_dimm), l_timing_in_ps );
FAPI_INF("tCK (ps): %d, %s (ps): %d, %s (nck): %d",
l_tck_in_ps, TT::TIMING_NAME, l_timing_in_ps, TT::TIMING_NAME, o_timing_in_nck);
}
fapi_try_exit:
return fapi2::current_err;
}
}// mss
#endif
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