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/* IBM_PROLOG_BEGIN_TAG */
/* This is an automatically generated prolog. */
/* */
/* $Source: src/import/generic/memory/lib/utils/voltage/gen_mss_volt.H $ */
/* */
/* OpenPOWER HostBoot Project */
/* */
/* Contributors Listed Below - COPYRIGHT 2018,2020 */
/* [+] 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 gen_mss_volt.H
/// @brief Functions used by mss_volt procedure
///
// *HWP HWP Owner: Louis Stermole <stermole@us.ibm.com>
// *HWP HWP Backup: Andre A. Marin <aamarin@us.ibm.com>
// *HWP Team: Memory
// *HWP Level: 3
// *HWP Consumed by: HB:FSP
#ifndef _GEN_MSS_VOLT_H_
#define _GEN_MSS_VOLT_H_
#include <fapi2.H>
#include <generic/memory/lib/utils/find.H>
#include <generic/memory/lib/utils/c_str.H>
#include <generic/memory/lib/utils/shared/mss_generic_consts.H>
#include <generic/memory/lib/utils/voltage/gen_mss_voltage_traits.H>
namespace mss
{
///
/// @brief Determine what voltages are supported for the given memory controller and DRAM generation
/// @tparam M mss::mc_type memory controller type
/// @tparam D mss::spd::device_type DRAM device type (generation)
/// @tparam TT mss::voltage_traits voltage traits for the given mc_type/device_type pairing
/// @param[in] i_target the target for accessing voltage attributes from SPD
/// @param[out] o_supported_dram_voltages vector of supported rail voltages in millivolts to be used in set_voltage_attributes
/// @return FAPI2_RC_SUCCESS iff ok
///
template<mss::mc_type M, mss::spd::device_type D, typename TT = mss::voltage_traits<M, D>>
fapi2::ReturnCode get_supported_voltages(const fapi2::Target<TT::SPD_TARGET_TYPE>& i_target,
std::vector<uint32_t>& o_supported_dram_voltages);
///
/// @brief Set voltage rail attributes
/// @tparam M mss::mc_type memory controller type
/// @tparam D mss::spd::device_type DRAM device type (generation)
/// @tparam TT mss::voltage_traits voltage traits for the given mc_type/device_type pairing
/// @param[in] i_target the target for setting voltage attributes
/// @param[in] i_selected_dram_voltages vector of selected rail voltages in millivolts for nominal voltage
/// @return FAPI2_RC_SUCCESS iff ok
///
template<mss::mc_type M, mss::spd::device_type D, typename TT = mss::voltage_traits<M, D>>
inline fapi2::ReturnCode set_voltage_attributes(const fapi2::Target<TT::VOLTAGE_TARGET_TYPE>& i_target,
const std::vector<uint32_t>& i_selected_dram_voltages)
{
// Check that the number of supplied voltage values is correct
const auto l_num_setters = TT::voltage_setters.size();
const auto l_num_supplied_voltages = i_selected_dram_voltages.size();
FAPI_ASSERT(l_num_supplied_voltages == l_num_setters,
fapi2::MSS_VOLT_WRONG_NUMBER_OF_VOLTAGES().
set_SUPPLIED_NUMBER(l_num_supplied_voltages).
set_EXPECTED_NUMBER(l_num_setters).
set_VOLT_TARGET(i_target),
"%s: Incorrect number of voltages supplied to set_voltage_attributes function: %d (expected %d)",
mss::c_str(i_target),
l_num_supplied_voltages,
l_num_setters);
for (size_t l_setter_index = 0; l_setter_index < l_num_setters; ++l_setter_index)
{
FAPI_TRY( (*TT::voltage_setters[l_setter_index])(i_target, i_selected_dram_voltages[l_setter_index]) );
}
fapi_try_exit:
return fapi2::current_err;
}
///
/// @brief Setup and save off rail voltages
/// @tparam M mss::mc_type memory controller type
/// @tparam D mss::spd::device_type DRAM device type (generation)
/// @tparam TT mss::voltage_traits voltage traits for the given mc_type/device_type pairing
/// @param[in] i_target the target for accessing voltage attributes from SPD
/// @return FAPI2_RC_SUCCESS iff ok
///
template<mss::mc_type M, mss::spd::device_type D, typename TT = mss::voltage_traits<M, D>>
inline fapi2::ReturnCode setup_voltage_rail_values(const fapi2::Target<TT::SPD_TARGET_TYPE>& i_target)
{
const auto l_voltage_target = mss::find_target<TT::VOLTAGE_TARGET_TYPE>(i_target);
const auto l_spd_target = mss::find_target<TT::SPD_TARGET_TYPE>(i_target);
std::vector<uint32_t> l_dram_voltages;
FAPI_TRY( (mss::get_supported_voltages<M, D>(l_spd_target, l_dram_voltages)),
"Failed to get supported voltages for %s", mss::c_str(l_spd_target) );
FAPI_TRY( (mss::set_voltage_attributes<M, D>(l_voltage_target, l_dram_voltages)),
"Failed to set volt attributes for %s", mss::c_str(l_voltage_target) );
fapi_try_exit:
return fapi2::current_err;
}
} // mss
#endif
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