policy.hh

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#ifndef __MEM_QOS_POLICY_HH__
#define __MEM_QOS_POLICY_HH__
 
#include <cstdint>
#include <utility>
 
#include "base/compiler.hh"
#include "base/logging.hh"
#include "base/trace.hh"
#include "debug/QOS.hh"
#include "mem/qos/mem_ctrl.hh"
#include "mem/packet.hh"
#include "mem/request.hh"
 
namespace gem5
{
 
struct QoSPolicyParams;
 
namespace memory
{
 
namespace qos
{

class Policy : public SimObject
{
  public:
    using Params = QoSPolicyParams;
    Policy(const Params &p);
 
    virtual ~Policy();
 
    virtual void regStats() override {};
 
    virtual void init() override {};

    void setMemCtrl(MemCtrl* mem) { memCtrl = mem; };

    template <typename Requestor, typename T>
    std::pair<RequestorID, T> pair(Requestor requestor, T value);

    virtual uint8_t schedule(const RequestorID requestor_id,
                              const uint64_t data) = 0;

    uint8_t schedule(const PacketPtr pkt);
 
  protected:
    MemCtrl* memCtrl;
};
 
template <typename Requestor, typename T>
std::pair<RequestorID, T>
Policy::pair(Requestor requestor, T value)
{
    auto id = memCtrl->system()->lookupRequestorId(requestor);
 
    panic_if(id == Request::invldRequestorId,
             "Unable to find requestor %s\n", requestor);
 
    DPRINTF(QOS,
            "Requestor %s [id %d] associated with QoS data %d\n",
            requestor, id, value);
 
    return std::pair<RequestorID, T>(id, value);
}
 
} // namespace qos
} // namespace memory
} // namespace gem5
 
#endif /* __MEM_QOS_POLICY_HH__ */