policy_fixed_prio.cc

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 * 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);
}