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/* IBM_PROLOG_BEGIN_TAG */
/* This is an automatically generated prolog. */
/* */
/* $Source: src/import/chips/centaur/procedures/hwp/memory/lib/utils/mem_size.C $ */
/* */
/* OpenPOWER HostBoot Project */
/* */
/* Contributors Listed Below - COPYRIGHT 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 */
#include <fapi2.H>
#include <lib/shared/dimmConsts.H>
#include <generic/memory/lib/utils/memory_size.H>
#include <generic/memory/lib/utils/find.H>
namespace mss
{
///
/// @brief Check if a given DIMM is functional
/// @param[in] i_valid_dimm_bitmap from ATTR_CEN_MSS_EFF_DIMM_FUNCTIONAL_VECTOR
/// @param[in] i_port port index [0:1]
/// @param[in] i_dimm dimm index [0:1]
/// @return true if dimm is functional, false otherwise
///
bool is_dimm_functional(const uint8_t i_valid_dimm_bitmap,
const uint8_t i_port,
const uint8_t i_dimm)
{
// TODO - RTC:174931 See if we can clean up is_dimm_functional when indexing API is implemented
constexpr uint8_t PORT0_DIMM0_BIT_POS = 0;
constexpr uint8_t PORT0_DIMM1_BIT_POS = 1;
constexpr uint8_t PORT1_DIMM0_BIT_POS = 4;
constexpr uint8_t PORT1_DIMM1_BIT_POS = 5;
// Map that represents a valid dimm position for ATTR_CEN_MSS_EFF_DIMM_FUNCTIONAL_VECTOR
// Taken from attribute description
static constexpr uint8_t const VALID_DIMM_POS[MAX_PORTS_PER_MBA][MAX_DIMM_PER_PORT] =
{
{ PORT0_DIMM0_BIT_POS, PORT0_DIMM1_BIT_POS },
{ PORT1_DIMM0_BIT_POS, PORT1_DIMM1_BIT_POS },
};
if (i_port >= MAX_PORTS_PER_MBA)
{
FAPI_ERR("Port index out of bounds: %d", i_port);
fapi2::Assert(false);
}
if (i_dimm >= MAX_DIMM_PER_PORT)
{
FAPI_ERR("DIMM index out of bounds: %d", i_dimm);
fapi2::Assert(false);
}
// We are just checking bits are set from bitmap
// that states whether a certain dimm is functional
return fapi2::buffer<uint8_t>(i_valid_dimm_bitmap).getBit(VALID_DIMM_POS[i_port][i_dimm]);
}
///
/// @brief Return the total memory size behind a DMI
/// @param[in] i_target the DMI target
/// @param[out] o_size the size of memory in GB behind the target
/// @return FAPI2_RC_SUCCESS if ok
///
template<>
fapi2::ReturnCode eff_memory_size( const fapi2::Target<fapi2::TARGET_TYPE_DMI>& i_target, uint64_t& o_size )
{
o_size = 0;
for (const auto& mba : mss::find_targets<fapi2::TARGET_TYPE_MBA>(i_target))
{
uint8_t l_sizes[MAX_PORTS_PER_MBA][MAX_DIMM_PER_PORT] = {};
uint8_t l_func_dimms_bitmap = 0;
FAPI_TRY( FAPI_ATTR_GET(fapi2::ATTR_CEN_MSS_EFF_DIMM_FUNCTIONAL_VECTOR, mba, l_func_dimms_bitmap),
"Failed to access attribute ATTR_CEN_MSS_EFF_DIMM_FUNCTIONAL_VECTOR for %s", mss::c_str(mba) );
FAPI_TRY( FAPI_ATTR_GET(fapi2::ATTR_CEN_EFF_DIMM_SIZE, mba, l_sizes),
"Failed to access attribute ATTR_CEN_EFF_DIMM_SIZE for %s", mss::c_str(mba) );
for( size_t p = 0; p < MAX_PORTS_PER_MBA; ++p)
{
for( size_t d = 0; d < MAX_DIMM_PER_PORT; ++d)
{
if( is_dimm_functional(l_func_dimms_bitmap, p, d) )
{
o_size += l_sizes[p][d];
}
}// dimm
}// port
}// mba
fapi_try_exit:
return fapi2::current_err;
}
}// mss
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