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/* IBM_PROLOG_BEGIN_TAG */
/* This is an automatically generated prolog. */
/* */
/* $Source: src/import/chips/p9a/procedures/hwp/memory/p9a_omi_train.C $ */
/* */
/* 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 p9a_omi_train.C
/// @brief Check the omi status
///
// *HWP HWP Owner: Andre Marin <aamarin@us.ibm.com>
// *HWP HWP Backup: Stephen Glancy <sglancy@us.ibm.com>
// *HWP Team: Memory
// *HWP Level: 3
// *HWP Consumed by: Memory
#include <lib/shared/axone_defaults.H>
#include <p9a_omi_train.H>
#include <fapi2.H>
#include <p9a_mc_scom_addresses.H>
#include <p9a_mc_scom_addresses_fld.H>
#include <p9a_mc_scom_addresses_fixes.H>
#include <p9a_mc_scom_addresses_fld_fixes.H>
#include <generic/memory/lib/utils/c_str.H>
#include <generic/memory/lib/utils/scom.H>
#include <generic/memory/lib/utils/buffer_ops.H>
#include <generic/memory/lib/utils/find.H>
#include <generic/memory/lib/utils/shared/mss_generic_consts.H>
#include <lib/mc/omi.H>
#include <lib/workarounds/p9a_omi_workarounds.H>
#include <generic/memory/mss_git_data_helper.H>
///
/// @brief Turn on Axone config regs to enable training
/// @param[in] i_target the OMI target to operate on
/// @return FAPI2_RC_SUCCESS iff ok
///
fapi2::ReturnCode p9a_omi_train( const fapi2::Target<fapi2::TARGET_TYPE_OMI>& i_target)
{
mss::display_git_commit_info("p9a_omi_train");
FAPI_INF("%s Start p9a_omi_train", mss::c_str(i_target));
const auto& l_ocmbs = mss::find_targets<fapi2::TARGET_TYPE_OCMB_CHIP>(i_target);
if(l_ocmbs.empty())
{
// No ocmbs, no training needed
return fapi2::FAPI2_RC_SUCCESS;
}
{
// Only one OCMB per OMI for axone
const auto& l_ocmb = l_ocmbs[0];
const auto& l_proc = mss::find_target<fapi2::TARGET_TYPE_PROC_CHIP>(l_ocmb);
uint8_t l_dl_x4_backoff_en = 0;
bool l_gem_or_non_axone_workaround = false;
bool l_axone_workarounds_required = false;
uint8_t l_proc_type = 0;
uint8_t l_ocmb_type = 0;
// Get BACKOFF_ENABLE CHIP_EC attribute
FAPI_TRY(FAPI_ATTR_GET(fapi2::ATTR_CHIP_EC_FEATURE_OMI_DL_X4_BACKOFF_ENABLE, l_ocmb, l_dl_x4_backoff_en),
"Error getting ATTR_CHIP_EC_FEATURE_OMI_DL_X4_BACKOFF_ENABLE");
// Determine if workarounds will be performed, if so, perform them
FAPI_TRY(mss::workarounds::mc::get_ocmb_proc_types(l_ocmb, l_proc, l_ocmb_type, l_proc_type));
l_gem_or_non_axone_workaround = mss::workarounds::mc::is_prbs_omi_required(l_ocmb_type, l_proc_type);
l_axone_workarounds_required = mss::workarounds::mc::is_prbs_omi_axone_required(l_ocmb_type, l_proc_type);
if (l_axone_workarounds_required)
{
// TX_PATTERN_A
FAPI_TRY(mss::workarounds::mc::omi_training_prbs(i_target, l_dl_x4_backoff_en));
}
else if (l_gem_or_non_axone_workaround)
{
// TX_TRAINING_STATE_3, TX_PATTERN_A
FAPI_TRY(mss::workarounds::mc::omi_training_prbs_gem(i_target, l_dl_x4_backoff_en));
// 2 second delay for gemini
FAPI_TRY(fapi2::delay(2 * mss::common_timings::DELAY_1S, mss::common_timings::DELAY_1MS));
}
// Enable auto training
FAPI_TRY(mss::mc::setup_mc_config0(i_target, mss::omi::train_mode::ENABLE_AUTO_TRAINING, l_dl_x4_backoff_en));
return fapi2::FAPI2_RC_SUCCESS;
}
fapi_try_exit:
return fapi2::current_err;
}// p9a_omi_train
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