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/* IBM_PROLOG_BEGIN_TAG */
/* This is an automatically generated prolog. */
/* */
/* $Source: src/import/chips/p9/procedures/hwp/memory/lib/dimm/rcd_load.C $ */
/* */
/* OpenPOWER HostBoot Project */
/* */
/* Contributors Listed Below - COPYRIGHT 2015,2019 */
/* [+] 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 rcd_load.C
/// @brief Run and manage the RCD_LOAD engine
///
// *HWP HWP Owner: Jacob Harvey <jlharvey@us.ibm.com>
// *HWP HWP Backup: Andre Marin <aamarin@us.ibm.com>
// *HWP Team: Memory
// *HWP Level: 3
// *HWP Consumed by: FSP:HB
#include <fapi2.H>
#include <mss.H>
#include <lib/dimm/rcd_load.H>
#include <lib/dimm/rcd_load_ddr4.H>
#include <lib/utils/nimbus_find.H>
using fapi2::TARGET_TYPE_MCBIST;
using fapi2::TARGET_TYPE_MCA;
using fapi2::TARGET_TYPE_MCS;
using fapi2::TARGET_TYPE_DIMM;
using fapi2::FAPI2_RC_SUCCESS;
namespace mss
{
///
/// @brief Perform the rcd_load operations - TARGET_TYPE_MCA specialization
/// @param[in] i_target, a fapi2::Target<TARGET_TYPE_MCA>
/// @return FAPI2_RC_SUCCESS if and only if ok
///
template<>
fapi2::ReturnCode rcd_load<TARGET_TYPE_MCA>( const fapi2::Target<TARGET_TYPE_MCA>& i_target )
{
const auto& l_mcbist = mss::find_target<TARGET_TYPE_MCBIST>(i_target);
// A vector of CCS instructions. We'll ask the targets to fill it, and then we'll execute it
ccs::program l_program;
uint8_t l_sim = 0;
// Clear the initial delays. This will force the CCS engine to recompute the delay based on the
// instructions in the CCS instruction vector
l_program.iv_poll.iv_initial_delay = 0;
l_program.iv_poll.iv_initial_sim_delay = 0;
FAPI_TRY(mss::is_simulation(l_sim));
for ( const auto& d : mss::find_targets<TARGET_TYPE_DIMM>(i_target) )
{
// CKE needs to be LOW before running the RCW sequence
// So we use the power down entry command to achieve this
if(!l_sim)
{
l_program.iv_instructions.push_back( ccs::pde_command() );
}
FAPI_DBG("rcd load for %s", mss::c_str(d));
FAPI_TRY( perform_rcd_load(d, l_program.iv_instructions),
"Failed perform_rcd_load() for %s", mss::c_str(d) );
}// dimms
// We have to configure the CCS engine to let it know which port these instructions are
// going out (or whether it's broadcast ...) so lets execute the instructions we presently
// have so that we kind of do this by port
FAPI_TRY( ccs::execute(l_mcbist, l_program, i_target),
"Failed to execute ccs for %s", mss::c_str(i_target) );
fapi_try_exit:
return fapi2::current_err;
}
///
/// @brief Perform the rcd_load operations - TARGET_TYPE_MCBIST specialization
/// @param[in] i_target, a fapi2::Target<TARGET_TYPE_MCBIST>
/// @return FAPI2_RC_SUCCESS if and only if ok
///
template<>
fapi2::ReturnCode rcd_load<TARGET_TYPE_MCBIST>( const fapi2::Target<TARGET_TYPE_MCBIST>& i_target )
{
for ( const auto& p : mss::find_targets<TARGET_TYPE_MCA>(i_target) )
{
FAPI_TRY( rcd_load(p) );
}
fapi_try_exit:
return fapi2::current_err;
}
///
/// @brief Perform the rcd_load operations - unknown DIMM case
/// @param[in] i_target, a fapi2::Target<TARGET_TYPE_DIMM>
/// @param[in] a vector of CCS instructions we should add to (unused)
/// @return FAPI2_RC_SUCCESS if and only if ok
///
template<>
fapi2::ReturnCode perform_rcd_load<DEFAULT_KIND>( const fapi2::Target<TARGET_TYPE_DIMM>& i_target,
std::vector< ccs::instruction_t >& i_inst)
{
uint8_t l_type = 0;
uint8_t l_gen = 0;
FAPI_TRY( mss::eff_dimm_type(i_target, l_type) );
FAPI_TRY( mss::eff_dram_gen(i_target, l_gen) );
// If we're here, we have a problem. The DIMM kind (type and/or generation) wasn't known
// to our dispatcher. We have a DIMM plugged in we don't know how to deal with.
FAPI_ASSERT(false,
fapi2::MSS_UNKNOWN_DIMM()
.set_DIMM_TYPE(l_type)
.set_DRAM_GEN(l_gen)
.set_DIMM_IN_ERROR(i_target),
"Unable to perform rcd load on %s: unknown type (%d) or generation (%d)",
mss::c_str(i_target), l_type, l_gen);
fapi_try_exit:
return fapi2::current_err;
}
///
/// @brief Perform the rcd_load operations - RDIMM DDR4
/// @param[in] i_target, a fapi2::Target<TARGET_TYPE_DIMM>
/// @param[in] a vector of CCS instructions we should add to
/// @return FAPI2_RC_SUCCESS if and only if ok
///
template<>
fapi2::ReturnCode perform_rcd_load<KIND_RDIMM_DDR4>( const fapi2::Target<TARGET_TYPE_DIMM>& i_target,
std::vector< ccs::instruction_t >& i_inst)
{
uint8_t l_sim = 0;
FAPI_TRY( mss::is_simulation(l_sim) );
FAPI_DBG("perform rcd_load for %s [expecting rdimm (ddr4)]", mss::c_str(i_target));
FAPI_TRY( rcd_load_ddr4(i_target, l_sim, i_inst),
"Failed rcd_load_ddr4() for %s", mss::c_str(i_target) );
fapi_try_exit:
return fapi2::current_err;
}
///
/// @brief Perform the rcd_load operations - LRDIMM DDR4
/// @param[in] i_target, a fapi2::Target<TARGET_TYPE_DIMM>
/// @param[in] a vector of CCS instructions we should add to
/// @return FAPI2_RC_SUCCESS if and only if ok
///
template<>
fapi2::ReturnCode perform_rcd_load<KIND_LRDIMM_DDR4>( const fapi2::Target<TARGET_TYPE_DIMM>& i_target,
std::vector< ccs::instruction_t >& i_inst)
{
uint8_t l_sim = 0;
FAPI_TRY( mss::is_simulation(l_sim) );
FAPI_DBG("perform rcd_load for %s [expecting lrdimm (ddr4)]", mss::c_str(i_target));
FAPI_TRY( rcd_load_ddr4(i_target, l_sim, i_inst) );
fapi_try_exit:
return fapi2::current_err;
}
///
/// @brief Perform the rcd_load operations - start the dispatcher
/// @param[in] i_target, a fapi2::Target<TARGET_TYPE_DIMM>
/// @param[in] a vector of CCS instructions we should add to
/// @return FAPI2_RC_SUCCESS if and only if ok
///
template<>
fapi2::ReturnCode perform_rcd_load<FORCE_DISPATCH>( const fapi2::Target<TARGET_TYPE_DIMM>& i_target,
std::vector< ccs::instruction_t >& i_inst)
{
uint8_t l_type = 0;
uint8_t l_gen = 0;
FAPI_TRY( mss::eff_dimm_type(i_target, l_type) );
FAPI_TRY( mss::eff_dram_gen(i_target, l_gen) );
return perform_rcd_load_dispatch<FORCE_DISPATCH>(dimm_kind( l_type, l_gen ), i_target, i_inst);
fapi_try_exit:
FAPI_ERR("couldn't get dimm type, dram gen: %s", mss::c_str(i_target));
return fapi2::current_err;
}
///
/// @brief Helper function to bring CKE high and hold for 400 cycles
/// @param[in] i_target MCA target on which to operate
/// @return FAPI2_RC_SUCCESS if and only if ok
///
fapi2::ReturnCode draminit_cke_helper( const fapi2::Target<fapi2::TARGET_TYPE_MCA>& i_target)
{
auto l_des = mss::ccs::des_command();
mss::ccs::program l_program;
// Also a Deselect command must be registered as required from the Spec.
// Register DES instruction, which pulls CKE high. Idle 400 cycles, and then begin RCD loading
// Note: This only is sent to one of the MCA as we still have the mux_addr_sel bit set, meaning
// we'll PDE/DES all DIMM at the same time.
l_des.arr1.insertFromRight<MCBIST_CCS_INST_ARR1_00_IDLES, MCBIST_CCS_INST_ARR1_00_IDLES_LEN>(400);
l_program.iv_instructions.push_back(l_des);
FAPI_TRY( mss::ccs::execute(mss::find_target<fapi2::TARGET_TYPE_MCBIST>(i_target),
l_program,
i_target),
"%s Failed execute in p9_mss_draminit",
mss::c_str(i_target) );
fapi_try_exit:
return fapi2::current_err;
}
} // namespace
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