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/*
* Copyright (c) 2018 ARM Limited
* All rights reserved
*
* The license below extends only to copyright in the software and shall
* not be construed as granting a license to any other intellectual
* property including but not limited to intellectual property relating
* to a hardware implementation of the functionality of the software
* licensed hereunder. You may use the software subject to the license
* terms below provided that you ensure that this notice is replicated
* unmodified and in its entirety in all distributions of the software,
* modified or unmodified, in source code or in binary form.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are
* met: redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer;
* redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution;
* neither the name of the copyright holders nor the names of its
* contributors may be used to endorse or promote products derived from
* this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
* Author: Matteo Andreozzi
*/
#include "mem/qos/policy_fixed_prio.hh"
#include <algorithm>
#include <functional>
#include "mem/request.hh"
namespace QoS {
FixedPriorityPolicy::FixedPriorityPolicy(const Params* p)
: Policy(p), defaultPriority(p->qos_fixed_prio_default_prio)
{}
FixedPriorityPolicy::~FixedPriorityPolicy()
{}
void
FixedPriorityPolicy::init()
{
}
void
FixedPriorityPolicy::initMasterName(std::string master, uint8_t priority)
{
priorityMap.insert(
this->pair<std::string, uint8_t>(master, priority));
}
void
FixedPriorityPolicy::initMasterObj(const SimObject* master, uint8_t priority)
{
priorityMap.insert(
this->pair<const SimObject*, uint8_t>(master, priority));
}
uint8_t
FixedPriorityPolicy::schedule(const MasterID mId, const uint64_t data)
{
// Reads a packet's MasterID contained in its encapsulated request
// if a match is found in the configured priority map, returns the
// matching priority, else returns zero
auto ret = priorityMap.find(mId);
if (ret != priorityMap.end()) {
return ret->second;
} else {
DPRINTF(QOS, "Master %s (MasterID %d) not present in priorityMap, "
"assigning default priority %d\n",
memCtrl->system()->getMasterName(mId),
mId, defaultPriority);
return defaultPriority;
}
}
} // namespace QoS
QoS::FixedPriorityPolicy *
QoSFixedPriorityPolicyParams::create()
{
return new QoS::FixedPriorityPolicy(this);
}
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