129 lines
3.1 KiB
C++
129 lines
3.1 KiB
C++
/*
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* Utils.cpp
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*
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* Created on: Mar 12, 2014
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* Author: jonny
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*/
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#include "TimingCalculation.h"
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#include "configuration/TimingConfiguration.h"
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#include "ControllerCore.h"
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#include "../../common/DebugManager.h"
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#include "configuration/Configuration.h"
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#include "../../common/Utils.h"
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namespace core {
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sc_time getDelayToMeetConstraint(sc_time previous, sc_time start, sc_time constraint)
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{
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if (previous + constraint > start)
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return previous + constraint - start;
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else
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return SC_ZERO_TIME;
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}
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const sc_time clkAlign(sc_time time, Alignment alignment)
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{
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sc_time clk = Configuration::getInstance().Timings.clk;
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if (alignment == UP)
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return ceil(time / clk) * clk;
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else
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return floor(time / clk) * clk;
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}
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sc_time getExecutionTime(Command command, tlm::tlm_generic_payload& payload)
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{
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TimingConfiguration& config = Configuration::getInstance().Timings;
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if (command == Command::Precharge || command == Command::PrechargeAll)
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{
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return config.tRP;
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}
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else if (command == Command::Activate)
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{
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return config.tRCD;
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}
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else if (command == Command::Read)
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{
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return config.tRL + getReadAccessTime();
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}
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else if (command == Command::ReadA)
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{
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return config.tRTP + config.tRP;
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}
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else if (command == Command::Write)
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{
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return config.tWL + getWriteAccessTime();
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}
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else if (command == Command::WriteA)
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{
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return config.tWL + getWriteAccessTime() + config.tWR + config.tRP;
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}
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else if (command == Command::PrechargeAll)
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{
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return config.tRP;
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}
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else if (command == Command::AutoRefresh)
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{
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return getElementFromMap(config.refreshTimings, DramExtension::getExtension(payload).getBank()).tRFC;
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}
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else if (command == Command::PDNAX || command == Command::PDNPX || command == Command::SREFX)
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{
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return config.clk;
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}
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else
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{
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SC_REPORT_FATAL("getExecutionTime", "command not known or command doesn't have a fixed execution time");
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return SC_ZERO_TIME;
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}
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}
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sc_time getMinimalExecutionTime(Command command, tlm::tlm_generic_payload& payload)
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{
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TimingConfiguration& config = Configuration::getInstance().Timings;
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if (command == Command::PDNA || command == Command::PDNP)
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{
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return config.tCKE;
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}
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else if (command == Command::SREF)
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{
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return config.tCKESR;
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}
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else
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{
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SC_REPORT_FATAL("getMinimalExecutionTime", "command is not know or command has a fixed execution time");
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return SC_ZERO_TIME;
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}
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}
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bool isClkAligned(sc_time time, sc_time clk)
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{
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return !((time / clk) - ceil(time / clk));
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}
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sc_time getReadAccessTime()
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{
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Configuration& config = Configuration::getInstance();
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return config.BurstLength/config.DataRate*config.Timings.clk;
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}
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sc_time getWriteAccessTime()
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{
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Configuration& config = Configuration::getInstance();
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if (config.DataRate == 1)
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{
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return config.Timings.clk * (config.BurstLength-1) ;
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}
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else
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{
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return config.Timings.clk * config.BurstLength / config.DataRate;
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}
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}
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}
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