policy_fixed_prio.cc

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 * property including but not limited to intellectual property relating
 * to a hardware implementation of the functionality of the software
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 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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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::initRequestorName(std::string requestor, uint8_t priority)
{
    priorityMap.insert(
        this->pair<std::string, uint8_t>(requestor, priority));
}
 
void
FixedPriorityPolicy::initRequestorObj(const SimObject* requestor,
                                   uint8_t priority)
{
    priorityMap.insert(
        this->pair<const SimObject*, uint8_t>(requestor, priority));
}
 
uint8_t
FixedPriorityPolicy::schedule(const RequestorID id, const uint64_t data)
{
    // Reads a packet's RequestorID 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(id);
 
    if (ret != priorityMap.end()) {
        return ret->second;
    } else {
        DPRINTF(QOS, "Requestor %s (RequestorID %d) not present in "
                     "priorityMap, assigning default priority %d\n",
                      memCtrl->system()->getRequestorName(id),
                      id, defaultPriority);
        return defaultPriority;
    }
}
 
} // namespace QoS
 
QoS::FixedPriorityPolicy *
QoSFixedPriorityPolicyParams::create()
{
    return new QoS::FixedPriorityPolicy(this);
}