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p9_mss_memdiag.C
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p9_mss_memdiag.C
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/* IBM_PROLOG_BEGIN_TAG */
/* This is an automatically generated prolog. */
/* */
/* $Source: src/import/chips/p9/procedures/hwp/memory/p9_mss_memdiag.C $ */
/* */
/* OpenPOWER HostBoot Project */
/* */
/* Contributors Listed Below - COPYRIGHT 2015,2017 */
/* [+] 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 p9_mss_memdiag.C
/// @brief Mainstore pattern testing
///
// *HWP HWP Owner: Brian Silver <bsilver@us.ibm.com>
// *HWP HWP Backup: Andre Marin <aamarin@us.ibm.com>
// *HWP Team: Memory
// *HWP Level: 2
// *HWP Consumed by: FSP:HB
#include <fapi2.H>
#include <p9_mss_memdiag.H>
#include <lib/utils/poll.H>
#include <generic/memory/lib/utils/find.H>
#include <lib/utils/count_dimm.H>
#include <lib/mcbist/address.H>
#include <lib/mcbist/memdiags.H>
#include <lib/mcbist/mcbist.H>
#include <lib/mc/port.H>
#include <lib/ecc/ecc.H>
using fapi2::TARGET_TYPE_MCBIST;
using fapi2::TARGET_TYPE_SYSTEM;
using fapi2::TARGET_TYPE_MCA;
extern "C"
{
///
/// @brief Pattern test the DRAM
/// @param[in] i_target the McBIST of the ports of the dram you're training
/// @return FAPI2_RC_SUCCESS iff ok
///
fapi2::ReturnCode p9_mss_memdiag( const fapi2::Target<TARGET_TYPE_MCBIST>& i_target )
{
FAPI_INF("Start memdiag");
// If there are no DIMM we don't need to bother. In fact, we can't as we didn't setup
// attributes for the PHY, etc.
if (mss::count_dimm(i_target) == 0)
{
FAPI_INF("... skipping mem_diags %s - no DIMM ...", mss::c_str(i_target));
return fapi2::FAPI2_RC_SUCCESS;
}
uint8_t l_sim = false;
FAPI_TRY( mss::is_simulation( l_sim) );
// Read the bad_dq_bitmap attribute and place corresponding symbol and chip marks
for (const auto& l_mca : mss::find_targets<TARGET_TYPE_MCA>(i_target))
{
fapi2::buffer<uint8_t> l_repairs_applied;
fapi2::buffer<uint8_t> l_repairs_exceeded;
std::vector<uint64_t> l_ranks;
FAPI_TRY( mss::restore_repairs( l_mca, l_repairs_applied, l_repairs_exceeded) );
// assert if we have exceeded the allowed repairs
for (const auto& l_dimm : mss::find_targets<fapi2::TARGET_TYPE_DIMM>(l_mca))
{
// Note: using MCA here as the scoms used to collect FFDC data fail on the DIMM level target
FAPI_ASSERT( !(l_repairs_exceeded.getBit(mss::index(l_dimm))),
fapi2::MSS_MEMDIAGS_REPAIRS_EXCEEDED().set_TARGET(l_mca),
"p9_mss_memdiag bad bit repairs exceeded %s", mss::c_str(l_mca) );
}
#ifdef __HOSTBOOT_MODULE
// assert if both chip and symbol marks exist for any given rank
FAPI_TRY( mss::rank::ranks(l_mca, l_ranks) );
for (const auto l_rank : l_ranks)
{
if (l_repairs_applied.getBit(l_rank))
{
uint64_t l_galois = 0;
mss::states l_confirmed = mss::NO;
// check for chip mark in hardware mark store
FAPI_TRY( mss::ecc::get_hwms(l_mca, l_rank, l_galois, l_confirmed) );
if (l_confirmed)
{
auto l_type = mss::ecc::fwms::mark_type::CHIP;
auto l_region = mss::ecc::fwms::mark_region::DISABLED;
auto l_addr = mss::mcbist::address(0);
// check for symbol mark in firmware mark store
FAPI_TRY( mss::ecc::get_fwms(l_mca, l_rank, l_galois, l_type, l_region, l_addr) );
FAPI_ASSERT( l_region == mss::ecc::fwms::mark_region::DISABLED,
fapi2::MSS_MEMDIAGS_CHIPMARK_AND_SYMBOLMARK().set_TARGET(l_mca).set_RANK(l_rank),
"p9_mss_memdiag both chip mark and symbol mark on rank %d: %s", l_rank, mss::c_str(l_mca) );
}
}
}
#endif
}
// We start the sf_init (write 0's) and it'll tickle the MCBIST complete FIR. PRD will see that
// and start a background scrub.
FAPI_TRY( memdiags::sf_init(i_target, mss::mcbist::PATTERN_0) );
// If we're in the sim, we want to poll for the FIR bit. I don't think this ever really happens
// unless we're expressly testing this API.
if (l_sim)
{
// Poll for the fir bit. We expect this to be set ...
fapi2::buffer<uint64_t> l_status;
// A small vector of addresses to poll during the polling loop
const std::vector<mss::poll_probe<fapi2::TARGET_TYPE_MCBIST>> l_probes =
{
{i_target, "mcbist current address", MCBIST_MCBMCATQ},
};
mss::poll_parameters l_poll_parameters;
bool l_poll_results = mss::poll(i_target, MCBIST_MCBISTFIRQ, l_poll_parameters,
[&l_status](const size_t poll_remaining,
const fapi2::buffer<uint64_t>& stat_reg) -> bool
{
FAPI_DBG("mcbist firq 0x%llx, remaining: %d", stat_reg, poll_remaining);
l_status = stat_reg;
return l_status.getBit<MCBIST_MCBISTFIRQ_MCBIST_PROGRAM_COMPLETE>() == true;
},
l_probes);
FAPI_ASSERT( l_poll_results == true,
fapi2::MSS_MEMDIAGS_SUPERFAST_INIT_FAILED_TO_INIT().set_TARGET(i_target),
"p9_mss_memdiags timedout %s", mss::c_str(i_target) );
}
fapi_try_exit:
FAPI_INF("End memdiag");
return fapi2::current_err;
}
}