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/* IBM_PROLOG_BEGIN_TAG */
/* This is an automatically generated prolog. */
/* */
/* $Source: src/import/chips/ocmb/explorer/procedures/hwp/memory/lib/workarounds/exp_omi_workarounds.C $ */
/* */
/* 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_omi_workarounds.C
/// @brief Workarounds for exp_omi_* procedures
///
// *HWP HWP Owner: Mark Pizzutillo <Mark.Pizzutillo@ibm.com>
// *HWP HWP Backup: Stephen Glancy <sglancy@us.ibm.com>
// *HWP Team: Memory
// *HWP Level: 2
// *HWP Consumed by: Memory
#include <fapi2.H>
#include <generic/memory/lib/utils/find.H>
#include <lib/workarounds/exp_omi_workarounds.H>
#include <lib/shared/exp_consts.H>
#include <lib/omi/exp_omi_utils.H>
#include <generic/memory/lib/mss_generic_attribute_getters.H>
#include <generic/memory/lib/mss_generic_system_attribute_getters.H>
#include <lib/inband/exp_inband.H>
#include <exp_oc_regs.H>
namespace mss
{
namespace exp
{
namespace workarounds
{
namespace omi
{
///
/// @brief Determine if OCMB PRBS workaround needs to be performed
///
/// @param[in] i_ocmb_chip OCMB target
/// @param[out] o_required workaround needs to be performed
/// @return FAPI2_RC_SUCCESS iff success
///
fapi2::ReturnCode is_prbs_ocmb_required(
const fapi2::Target<fapi2::TARGET_TYPE_OCMB_CHIP> i_ocmb_chip,
bool& o_required)
{
// Check chip type
uint8_t l_proc_type = 0;
const auto& l_proc_chip = mss::find_target<fapi2::TARGET_TYPE_PROC_CHIP>(i_ocmb_chip);
FAPI_TRY(FAPI_ATTR_GET_PRIVILEGED(fapi2::ATTR_NAME, l_proc_chip, l_proc_type),
"Error getting ATTR_NAME of %s", mss::c_str(l_proc_chip));
// OCMB Workaround Logic:
// Axone: OCMB workaround off
// Non-axone (Apollo): OCMB workaround on
// P10 - No workaround required (no enum for this yet, so we must revisit this when the time comes)
o_required = l_proc_type != fapi2::ENUM_ATTR_NAME_AXONE;
fapi_try_exit:
return fapi2::current_err;
}
///
/// @brief Performs OCMB PRBS workaround
///
/// @param[in] i_ocmb_chip OCMB chip
/// @param[in] i_dl_x4_backoff_en backoff enable
/// @return fapi2::ReturnCode FAPI2_RC_SUCCESS iff success
///
fapi2::ReturnCode prbs_ocmb(
const fapi2::Target<fapi2::TARGET_TYPE_OCMB_CHIP> i_ocmb_chip,
const uint8_t i_dl_x4_backoff_en)
{
FAPI_DBG("Performing PRBS OCMB workaround on %s", mss::c_str(i_ocmb_chip));
uint8_t l_sim = 0;
uint32_t l_prbs_time = 0;
uint64_t l_prbs_time_scaled = 0;
FAPI_TRY( mss::attr::get_is_simulation( l_sim) );
FAPI_TRY(mss::attr::get_omi_dl_preipl_prbs_time(mss::find_target<fapi2::TARGET_TYPE_OMI>(i_ocmb_chip), l_prbs_time),
"Error from FAPI_ATTR_GET (ATTR_OMI_DL_PREIPL_PRBS_TIME)");
l_prbs_time_scaled = l_prbs_time * mss::common_timings::DELAY_1MS;
// State 6
FAPI_TRY(mss::exp::omi::setup_omi_dl0_config0(i_ocmb_chip,
mss::omi::train_mode::TX_TRAINING_STATE3,
i_dl_x4_backoff_en));
// Set configurable delay based on the PRBS ATTR and SIM mode
FAPI_TRY(fapi2::delay(l_prbs_time_scaled, mss::common_timings::DELAY_1US));
FAPI_DBG("OMI Training Pre-ipl PRBS Time = %dns",
(l_sim ? mss::common_timings::DELAY_1US : l_prbs_time_scaled));
// Enable training state 1 to send Pattern A
FAPI_TRY(mss::exp::omi::setup_omi_dl0_config0(i_ocmb_chip,
mss::omi::train_mode::TX_PATTERN_A,
i_dl_x4_backoff_en));
// Not calling with ENABLE_AUTO_TRAINING for explorer
fapi_try_exit:
return fapi2::current_err;
}
///
/// @brief Determine if we need to bypass MENTERP register reads/writes
///
/// @param[in] i_target OCMB chip
/// @param[out] o_workaround true (1) for gemini, else false (0)
/// @return fapi2::ReturnCode FAPI2_RC_SUCCESS iff success, else error code
///
fapi2::ReturnCode gem_menterp(const fapi2::Target<fapi2::TARGET_TYPE_OCMB_CHIP> i_target,
uint8_t& o_workaround)
{
o_workaround = 0;
FAPI_TRY(FAPI_ATTR_GET(fapi2::ATTR_CHIP_EC_FEATURE_GEMINI_MENTERP_WORKAROUND, i_target, o_workaround),
"Error getting ATTR_CHIP_EC_FEATURE_GEMINI_MENTERP_WORKAROUND");
fapi_try_exit:
return fapi2::current_err;
}
/// @brief Determine if / perform the gemini workaround to setup the OMI config registers
///
/// @param[in] i_target OCMB (gemini)
/// @return fapi2::ReturnCode FAPI2_RC_SUCCESS iff success, else error
/// @note Gemini workaround to setup METADATA and TEMPLATE bits before doing reads
///
fapi2::ReturnCode gem_setup_config(const fapi2::Target<fapi2::TARGET_TYPE_OCMB_CHIP>& i_target)
{
uint8_t l_gemini_config_workaround = 0;
// Check if gemini workaround should be performed
FAPI_TRY(FAPI_ATTR_GET(fapi2::ATTR_CHIP_EC_FEATURE_GEMINI_OMI_SETUP_CONFIG_WORKAROUND, i_target,
l_gemini_config_workaround),
"Error getting ATTR_CHIP_EC_FEATURE_GEMINI_OMI_SETUP_CONFIG_WORKAROUND");
if (l_gemini_config_workaround)
{
// Set metadata bits
fapi2::buffer<uint32_t> l_value;
l_value.setBit<EXPLR_OC_OCTRLPID_MSB_METADATA_SUPPORTED>();
l_value.setBit<EXPLR_OC_OCTRLPID_MSB_METADATA_ENABLED>();
FAPI_TRY(mss::exp::ib::putOCCfg(i_target, EXPLR_OC_OCTRLPID_MSB, l_value));
// Set template bits
l_value.flush<0>();
l_value.setBit<EXPLR_OC_OTTCFG_MSB_TEMPLATE_0>();
l_value.setBit<EXPLR_OC_OTTCFG_MSB_TEMPLATE_5>();
FAPI_TRY(mss::exp::ib::putOCCfg(i_target, EXPLR_OC_OTTCFG_MSB, l_value));
}
fapi_try_exit:
return fapi2::current_err;
}
} // omi
} // workarounds
} // exp
} // mss
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