blob: cfc6cdbe468a5f2407ce67601f25f591d59359c1 [file] [log] [blame]
/**
* Copyright © 2019 IBM Corporation
*
* 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.
*/
#include "mru.hpp"
#include <phosphor-logging/lg2.hpp>
namespace openpower
{
namespace pels
{
namespace src
{
// The MRU substructure supports up to 15 MRUs.
static constexpr size_t maxMRUs = 15;
MRU::MRU(Stream& pel)
{
pel >> _type >> _size >> _flags >> _reserved4B;
size_t numMRUs = _flags & 0xF;
for (size_t i = 0; i < numMRUs; i++)
{
MRUCallout mru;
pel >> mru.priority;
pel >> mru.id;
_mrus.push_back(std::move(mru));
}
size_t actualSize =
sizeof(_type) + sizeof(_size) + sizeof(_flags) + sizeof(_reserved4B) +
(sizeof(MRUCallout) * _mrus.size());
if (_size != actualSize)
{
lg2::warning(
"MRU callout section in PEL with {NUM_MRUS} MRUs has listed size "
"{SUBSTRUCTURE_SIZE} that doesn't match the actual size "
"{ACTUAL_SIZE}",
"SUBSTRUCTURE_SIZE", _size, "NUM_MRUS", _mrus.size(), "ACTUAL_SIZE",
actualSize);
}
}
MRU::MRU(const std::vector<MRUCallout>& mrus)
{
if (mrus.empty())
{
lg2::error("Trying to create a MRU section with no MRUs");
throw std::runtime_error{"Trying to create a MRU section with no MRUs"};
}
_mrus = mrus;
if (_mrus.size() > maxMRUs)
{
_mrus.resize(maxMRUs);
}
_type = substructureType;
_size = sizeof(_type) + sizeof(_size) + sizeof(_flags) +
sizeof(_reserved4B) + (sizeof(MRUCallout) * _mrus.size());
_flags = _mrus.size();
_reserved4B = 0;
}
void MRU::flatten(Stream& pel) const
{
pel << _type << _size << _flags << _reserved4B;
for (auto& mru : _mrus)
{
pel << mru.priority;
pel << mru.id;
}
}
} // namespace src
} // namespace pels
} // namespace openpower