91 lines
2.3 KiB
C++
91 lines
2.3 KiB
C++
/*
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* RefreshManager.cpp
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*
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* Created on: Mar 29, 2014
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* Author: robert
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*/
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#include "RefreshManager.h"
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#include "../Controller.h"
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using namespace tlm;
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namespace core {
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RefreshManager::RefreshManager(Controller& controller) :
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controller(controller), nextPlannedRefresh(SC_ZERO_TIME), timing(controller.config.Timings.refreshTimings.at(0)),
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refreshPayloads(controller.state.bankStates.getNumberOfBanks())
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{
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setupTransactions();
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planNextRefresh();
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}
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RefreshManager::~RefreshManager()
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{
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}
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bool RefreshManager::hasCollision(const CommandSchedule& schedule)
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{
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return !(schedule.getEnd() < nextPlannedRefresh);
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}
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void RefreshManager::scheduleRefresh(tlm::tlm_generic_payload& payload, sc_time time)
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{
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if (time != nextPlannedRefresh)
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return;
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ScheduledCommand nextRefresh(refreshPayloads.at(0), Command::AutoRefresh, time, timing.tRFC);
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if (!controller.state.bankStates.allRowBuffersAreClosed())
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{
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ScheduledCommand precharge(refreshPayloads.at(0), Command::PrechargeAll, time,
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controller.config.Timings.tRP);
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nextRefresh.setStart(precharge.getEnd());
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controller.state.change(precharge);
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for (tlm::tlm_generic_payload& payload : refreshPayloads)
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{
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ScheduledCommand prechargeToSend(payload, Command::PrechargeAll, precharge.getStart(),
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controller.config.Timings.tRP);
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controller.wrapper.send(prechargeToSend);
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}
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}
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controller.state.change(nextRefresh);
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for (tlm::tlm_generic_payload& payload : refreshPayloads)
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{
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ScheduledCommand refreshToSend(payload, Command::AutoRefresh, nextRefresh.getStart(),
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timing.tRFC);
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controller.wrapper.send(refreshToSend);
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}
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planNextRefresh();
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}
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void RefreshManager::planNextRefresh()
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{
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nextPlannedRefresh += timing.tREFI;
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controller.wrapper.send(RefreshTrigger, nextPlannedRefresh, refreshPayloads.at(0));
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}
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void RefreshManager::setupTransactions()
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{
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for (Bank bank : controller.state.bankStates.getBanks())
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{
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tlm_generic_payload& payload = refreshPayloads.at(bank.ID());
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payload.set_address(getStartAddress(bank));
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payload.set_command(tlm::TLM_READ_COMMAND);
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payload.set_data_length(0);
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payload.set_response_status(tlm::TLM_OK_RESPONSE);
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payload.set_dmi_allowed(false);
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payload.set_byte_enable_length(0);
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payload.set_streaming_width(0);
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payload.set_extension(new DramExtension(Thread(0), bank, Row(0), Column(0))); //payload takes ownership
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}
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}
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} /* namespace core */
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