381 lines
19 KiB
C++
381 lines
19 KiB
C++
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#include "model/std_cells/LATQ.h"
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#include <cmath>
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#include "model/PortInfo.h"
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#include "model/TransitionInfo.h"
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#include "model/EventInfo.h"
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#include "model/std_cells/StdCellLib.h"
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#include "model/std_cells/CellMacros.h"
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#include "model/timing_graph/ElectricalNet.h"
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#include "model/timing_graph/ElectricalDriver.h"
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#include "model/timing_graph/ElectricalLoad.h"
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#include "model/timing_graph/ElectricalDelay.h"
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namespace DSENT
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{
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using std::ceil;
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using std::max;
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using std::min;
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LATQ::LATQ(const String& instance_name_, const TechModel* tech_model_)
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: StdCell(instance_name_, tech_model_)
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{
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initProperties();
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}
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LATQ::~LATQ()
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{}
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void LATQ::initProperties()
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{
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return;
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}
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void LATQ::constructModel()
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{
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// All constructModel should do is create Area/NDDPower/Energy Results as
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// well as instantiate any sub-instances using only the hard parameters
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createInputPort("D");
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createInputPort("G");
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createOutputPort("Q");
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createLoad("D_Cap");
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createLoad("G_Cap");
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createDelay("D_to_Q_delay");
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createDelay("G_to_Q_delay");
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createDriver("Q_Ron", true);
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ElectricalLoad* d_cap = getLoad("D_Cap");
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ElectricalLoad* g_cap = getLoad("G_Cap");
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ElectricalDelay* d_to_q_delay = getDelay("D_to_Q_delay");
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ElectricalDelay* g_to_q_delay = getDelay("G_to_Q_delay");
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ElectricalDriver* q_ron = getDriver("Q_Ron");
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getNet("D")->addDownstreamNode(d_cap);
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getNet("G")->addDownstreamNode(g_cap);
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d_cap->addDownstreamNode(d_to_q_delay);
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g_cap->addDownstreamNode(g_to_q_delay);
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g_to_q_delay->addDownstreamNode(q_ron);
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q_ron->addDownstreamNode(getNet("Q"));
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// Create Area result
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// Create NDD Power result
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createElectricalAtomicResults();
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// Create G Event Energy Result
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createElectricalEventAtomicResult("G");
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// Create DFF Event Energy Result
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createElectricalEventAtomicResult("LATD");
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createElectricalEventAtomicResult("LATQ");
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// Create Idle event for leakage
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// G pin is assumed to be on all the time
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//createElectricalEventAtomicResult("Idle");
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getEventInfo("Idle")->setStaticTransitionInfos();
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return;
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}
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void LATQ::updateModel()
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{
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// Get parameters
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double drive_strength = getDrivingStrength();
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Map<double>* cache = getTechModel()->getStdCellLib()->getStdCellCache();
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// Standard cell cache string
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String cell_name = "LATQ_X" + (String) drive_strength;
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// Get timing parameters
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getLoad("D_Cap")->setLoadCap(cache->get(cell_name + "->Cap->D"));
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getLoad("G_Cap")->setLoadCap(cache->get(cell_name + "->Cap->G"));
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getDriver("Q_Ron")->setOutputRes(cache->get(cell_name + "->DriveRes->Q"));
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getDelay("G_to_Q_delay")->setDelay(cache->get(cell_name + "->Delay->G_to_Q"));
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getDelay("D_to_Q_delay")->setDelay(cache->get(cell_name + "->Delay->D_to_Q"));
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// Set the cell area
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getAreaResult("Active")->setValue(cache->get(cell_name + "->Area->Active"));
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getAreaResult("Metal1Wire")->setValue(cache->get(cell_name + "->Area->Metal1Wire"));
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return;
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}
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void LATQ::evaluateModel()
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{
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return;
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}
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void LATQ::useModel()
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{
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// Get parameters
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double drive_strength = getDrivingStrength();
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Map<double>* cache = getTechModel()->getStdCellLib()->getStdCellCache();
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// Standard cell cache string
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String cell_name = "LATQ_X" + (String) drive_strength;
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// Propagate the transition info and get P_D, P_M, and P_Q
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propagateTransitionInfo();
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double P_D = getInputPort("D")->getTransitionInfo().getProbability1();
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double P_G = getInputPort("G")->getTransitionInfo().getProbability1();
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double P_Q = getOutputPort("Q")->getTransitionInfo().getProbability1();
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double G_num_trans_01 = getInputPort("G")->getTransitionInfo().getNumberTransitions01();
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double D_num_trans_01 = getInputPort("D")->getTransitionInfo().getNumberTransitions01();
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double Q_num_trans_01 = getOutputPort("Q")->getTransitionInfo().getNumberTransitions01();
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// Calculate leakage
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double leakage = 0;
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leakage += cache->get(cell_name + "->Leakage->!D!G!Q") * (1 - P_D) * (1 - P_G) * (1 - P_Q);
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leakage += cache->get(cell_name + "->Leakage->!D!GQ") * (1 - P_D) * (1 - P_G) * P_Q;
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leakage += cache->get(cell_name + "->Leakage->!DG!Q") * (1 - P_D) * P_G * (1 - P_Q);
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leakage += cache->get(cell_name + "->Leakage->D!G!Q") * P_D * (1 - P_G) * (1 - P_Q);
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leakage += cache->get(cell_name + "->Leakage->D!GQ") * P_D * (1 - P_G) * P_Q;
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leakage += cache->get(cell_name + "->Leakage->DGQ") * P_D * P_G * P_Q;
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getNddPowerResult("Leakage")->setValue(leakage);
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// Get VDD
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double vdd = getTechModel()->get("Vdd");
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// Get capacitances
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double g_b_cap = cache->get(cell_name + "->Cap->G_b");
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double d_b_cap = cache->get(cell_name + "->Cap->D_b");
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double q_i_cap = cache->get(cell_name + "->Cap->Q_i");
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double q_b_cap = cache->get(cell_name + "->Cap->Q_b");
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double q_cap = cache->get(cell_name + "->Cap->Q");
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double q_load_cap = getNet("Q")->getTotalDownstreamCap();
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// Calculate G Event energy
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double g_event_energy = 0.0;
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g_event_energy += (g_b_cap) * G_num_trans_01;
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g_event_energy *= vdd * vdd;
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getEventResult("G")->setValue(g_event_energy);
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// Calculate LATD Event energy
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double latd_event_energy = 0.0;
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latd_event_energy += (d_b_cap) * D_num_trans_01;
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latd_event_energy *= vdd * vdd;
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getEventResult("LATD")->setValue(latd_event_energy);
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// Calculate LATQ Event energy
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double latq_event_energy = 0.0;
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latq_event_energy += (q_i_cap + q_b_cap + q_cap + q_load_cap) * Q_num_trans_01;
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latq_event_energy *= vdd * vdd;
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getEventResult("LATQ")->setValue(latq_event_energy);
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return;
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}
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void LATQ::propagateTransitionInfo()
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{
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const TransitionInfo& trans_G = getInputPort("G")->getTransitionInfo();
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const TransitionInfo& trans_D = getInputPort("D")->getTransitionInfo();
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double G_num_trans_01 = trans_G.getNumberTransitions01();
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double G_num_trans_10 = G_num_trans_01;
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double G_num_trans_00 = trans_G.getNumberTransitions00();
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double D_freq_mult = trans_D.getFrequencyMultiplier();
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// If the latch is sampling just as fast or faster than input data signal
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// Then it can capture all transitions (though it should be normalized to clock)
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if((G_num_trans_10 + G_num_trans_00) >= D_freq_mult)
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{
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const TransitionInfo& trans_Q = trans_D.scaleFrequencyMultiplier(G_num_trans_10 + G_num_trans_00);
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getOutputPort("Q")->setTransitionInfo(trans_Q);
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}
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// If the latch is sampling slower than the input data signal, then input
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// will look like they transition more
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else
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{
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// Calculate scale ratio
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double scale_ratio = (G_num_trans_10 + G_num_trans_00) / D_freq_mult;
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// 00 and 11 transitions become fewer
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double D_scaled_diff = 0.5 * (1 - scale_ratio) * (trans_D.getNumberTransitions00() + trans_D.getNumberTransitions11());
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double D_scaled_num_trans_00 = trans_D.getNumberTransitions00() * scale_ratio;
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double D_scaled_num_trans_11 = trans_D.getNumberTransitions11() * scale_ratio;
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// 01 and 10 transitions become more frequent
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double D_scaled_num_trans_10 = trans_D.getNumberTransitions01() + D_scaled_diff;
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// Create final transition info, remembering to apply scaling ratio to normalize to G
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const TransitionInfo trans_Q( D_scaled_num_trans_00 * scale_ratio,
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D_scaled_num_trans_10 * scale_ratio,
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D_scaled_num_trans_11 * scale_ratio);
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getOutputPort("Q")->setTransitionInfo(trans_Q);
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}
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return;
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}
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// Creates the standard cell, characterizes and abstracts away the details
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void LATQ::cacheStdCell(StdCellLib* cell_lib_, double drive_strength_)
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{
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// Get parameters
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double gate_pitch = cell_lib_->getTechModel()->get("Gate->PitchContacted");
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Map<double>* cache = cell_lib_->getStdCellCache();
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// Standard cell cache string
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String cell_name = "LATQ_X" + (String) drive_strength_;
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Log::printLine("=== " + cell_name + " ===");
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// Now actually build the full standard cell model
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createInputPort("D");
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createInputPort("G");
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createOutputPort("Q");
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createNet("D_b");
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createNet("Q_i");
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createNet("Q_b");
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createNet("G_b");
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// Adds macros
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CellMacros::addInverter(this, "INV1", false, true, "D", "D_b");
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CellMacros::addInverter(this, "INV2", false, true, "Q_i", "Q_b");
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CellMacros::addInverter(this, "INV3", false, true, "Q_b", "Q");
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CellMacros::addInverter(this, "INV4", false, true, "G", "G_b");
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CellMacros::addTristate(this, "INVZ1", false, true, false, false, "D_b", "G", "G_b", "Q_i"); //trace timing through A->ZN path only
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CellMacros::addTristate(this, "INVZ2", false, false, false, false, "Q_b", "G_b", "G", "Q_i"); //don't trace timing through the feedback path
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// Update macros
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CellMacros::updateInverter(this, "INV1", drive_strength_ * 0.125);
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CellMacros::updateInverter(this, "INV2", drive_strength_ * 0.5);
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CellMacros::updateInverter(this, "INV3", drive_strength_ * 1.0);
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CellMacros::updateInverter(this, "INV4", drive_strength_ * 0.125);
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CellMacros::updateTristate(this, "INVZ1", drive_strength_ * 0.5);
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CellMacros::updateTristate(this, "INVZ2", drive_strength_ * 0.0625);
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// Cache area result
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double area = 0.0;
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area += gate_pitch * getTotalHeight() * 1;
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area += gate_pitch * getTotalHeight() * getGenProperties()->get("INV1_GatePitches").toDouble();
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area += gate_pitch * getTotalHeight() * getGenProperties()->get("INV2_GatePitches").toDouble();
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area += gate_pitch * getTotalHeight() * getGenProperties()->get("INV3_GatePitches").toDouble();
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area += gate_pitch * getTotalHeight() * getGenProperties()->get("INV4_GatePitches").toDouble();
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area += gate_pitch * getTotalHeight() * getGenProperties()->get("INVZ1_GatePitches").toDouble();
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area += gate_pitch * getTotalHeight() * getGenProperties()->get("INVZ2_GatePitches").toDouble();
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cache->set(cell_name + "->Area->Active", area);
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cache->set(cell_name + "->Area->Metal1Wire", area); //Cover-block m1 area
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Log::printLine(cell_name + "->Area->Active=" + (String) area);
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Log::printLine(cell_name + "->Area->Metal1Wire=" + (String) area);
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// --------------------------------------------------------------------
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// Leakage Model Calculation
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// --------------------------------------------------------------------
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// Cache leakage power results (for every single signal combination)
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double leakage_000 = 0; //!D, !G, !Q
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double leakage_001 = 0; //!D, !G, Q
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double leakage_010 = 0; //!D, G, !Q
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double leakage_100 = 0; //D, !G, !Q
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double leakage_101 = 0; //D, !G, Q
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double leakage_111 = 0; //D, G, Q
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//This is so painful...
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leakage_000 += getGenProperties()->get("INV1_LeakagePower_0").toDouble();
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leakage_000 += getGenProperties()->get("INV2_LeakagePower_0").toDouble();
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leakage_000 += getGenProperties()->get("INV3_LeakagePower_1").toDouble();
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leakage_000 += getGenProperties()->get("INV4_LeakagePower_0").toDouble();
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leakage_000 += getGenProperties()->get("INVZ1_LeakagePower_011_0").toDouble();
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leakage_000 += getGenProperties()->get("INVZ2_LeakagePower_101_0").toDouble();
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leakage_001 += getGenProperties()->get("INV1_LeakagePower_0").toDouble();
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leakage_001 += getGenProperties()->get("INV2_LeakagePower_0").toDouble();
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leakage_001 += getGenProperties()->get("INV3_LeakagePower_0").toDouble();
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leakage_001 += getGenProperties()->get("INV4_LeakagePower_0").toDouble();
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leakage_001 += getGenProperties()->get("INVZ1_LeakagePower_011_1").toDouble();
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leakage_001 += getGenProperties()->get("INVZ2_LeakagePower_100_1").toDouble();
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leakage_010 += getGenProperties()->get("INV1_LeakagePower_0").toDouble();
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leakage_010 += getGenProperties()->get("INV2_LeakagePower_0").toDouble();
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leakage_010 += getGenProperties()->get("INV3_LeakagePower_1").toDouble();
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leakage_010 += getGenProperties()->get("INV4_LeakagePower_1").toDouble();
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leakage_010 += getGenProperties()->get("INVZ1_LeakagePower_101_0").toDouble();
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leakage_010 += getGenProperties()->get("INVZ2_LeakagePower_011_0").toDouble();
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leakage_100 += getGenProperties()->get("INV1_LeakagePower_1").toDouble();
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leakage_100 += getGenProperties()->get("INV2_LeakagePower_1").toDouble();
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leakage_100 += getGenProperties()->get("INV3_LeakagePower_1").toDouble();
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leakage_100 += getGenProperties()->get("INV4_LeakagePower_0").toDouble();
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leakage_100 += getGenProperties()->get("INVZ1_LeakagePower_010_0").toDouble();
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leakage_100 += getGenProperties()->get("INVZ2_LeakagePower_101_0").toDouble();
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leakage_101 += getGenProperties()->get("INV1_LeakagePower_1").toDouble();
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leakage_101 += getGenProperties()->get("INV2_LeakagePower_1").toDouble();
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leakage_101 += getGenProperties()->get("INV3_LeakagePower_0").toDouble();
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leakage_101 += getGenProperties()->get("INV4_LeakagePower_0").toDouble();
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leakage_101 += getGenProperties()->get("INVZ1_LeakagePower_010_1").toDouble();
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leakage_101 += getGenProperties()->get("INVZ2_LeakagePower_100_1").toDouble();
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leakage_111 += getGenProperties()->get("INV1_LeakagePower_1").toDouble();
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leakage_111 += getGenProperties()->get("INV2_LeakagePower_1").toDouble();
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leakage_111 += getGenProperties()->get("INV3_LeakagePower_0").toDouble();
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leakage_111 += getGenProperties()->get("INV4_LeakagePower_1").toDouble();
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leakage_111 += getGenProperties()->get("INVZ1_LeakagePower_100_1").toDouble();
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leakage_111 += getGenProperties()->get("INVZ2_LeakagePower_010_1").toDouble();
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cache->set(cell_name + "->Leakage->!D!G!Q", leakage_000);
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cache->set(cell_name + "->Leakage->!D!GQ", leakage_001);
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cache->set(cell_name + "->Leakage->!DG!Q", leakage_010);
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cache->set(cell_name + "->Leakage->D!G!Q", leakage_100);
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cache->set(cell_name + "->Leakage->D!GQ", leakage_101);
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cache->set(cell_name + "->Leakage->DGQ", leakage_111);
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Log::printLine(cell_name + "->Leakage->!D!G!Q=" + (String) leakage_000);
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Log::printLine(cell_name + "->Leakage->!D!GQ=" + (String) leakage_001);
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Log::printLine(cell_name + "->Leakage->!DG!Q=" + (String) leakage_010);
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Log::printLine(cell_name + "->Leakage->D!G!Q=" + (String) leakage_100);
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Log::printLine(cell_name + "->Leakage->D!GQ=" + (String) leakage_101);
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Log::printLine(cell_name + "->Leakage->DGQ=" + (String) leakage_111);
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// --------------------------------------------------------------------
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// --------------------------------------------------------------------
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// Get Node Capacitances
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// --------------------------------------------------------------------
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double d_cap = getNet("D")->getTotalDownstreamCap();
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double d_b_cap = getNet("D_b")->getTotalDownstreamCap();
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double q_i_cap = getNet("Q_i")->getTotalDownstreamCap();
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double q_b_cap = getNet("Q_b")->getTotalDownstreamCap();
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||
|
double q_cap = getNet("Q")->getTotalDownstreamCap();
|
||
|
double g_cap = getNet("G")->getTotalDownstreamCap();
|
||
|
double g_b_cap = getNet("G_b")->getTotalDownstreamCap();
|
||
|
|
||
|
cache->set(cell_name + "->Cap->D", d_cap);
|
||
|
cache->set(cell_name + "->Cap->D_b", d_b_cap);
|
||
|
cache->set(cell_name + "->Cap->Q_i", q_i_cap);
|
||
|
cache->set(cell_name + "->Cap->Q_b", q_b_cap);
|
||
|
cache->set(cell_name + "->Cap->Q", q_cap);
|
||
|
cache->set(cell_name + "->Cap->G", g_cap);
|
||
|
cache->set(cell_name + "->Cap->G_b", g_b_cap);
|
||
|
|
||
|
Log::printLine(cell_name + "->Cap->D=" + (String) d_cap);
|
||
|
Log::printLine(cell_name + "->Cap->D_b=" + (String) d_b_cap);
|
||
|
Log::printLine(cell_name + "->Cap->Q_i=" + (String) q_i_cap);
|
||
|
Log::printLine(cell_name + "->Cap->Q_b=" + (String) q_b_cap);
|
||
|
Log::printLine(cell_name + "->Cap->Q=" + (String) q_cap);
|
||
|
Log::printLine(cell_name + "->Cap->G=" + (String) g_cap);
|
||
|
Log::printLine(cell_name + "->Cap->G_b=" + (String) g_b_cap);
|
||
|
// --------------------------------------------------------------------
|
||
|
|
||
|
// --------------------------------------------------------------------
|
||
|
// Build Internal Delay Model
|
||
|
// --------------------------------------------------------------------
|
||
|
double q_ron = getDriver("INV3_RonZN")->getOutputRes();
|
||
|
|
||
|
double d_to_q_delay = getDriver("INV1_RonZN")->calculateDelay() +
|
||
|
getDriver("INVZ1_RonZN")->calculateDelay() +
|
||
|
getDriver("INV2_RonZN")->calculateDelay() +
|
||
|
getDriver("INV3_RonZN")->calculateDelay();
|
||
|
double g_to_q_delay = getDriver("INV4_RonZN")->calculateDelay() +
|
||
|
getDriver("INVZ1_RonZN")->calculateDelay() +
|
||
|
getDriver("INV2_RonZN")->calculateDelay() +
|
||
|
getDriver("INV3_RonZN")->calculateDelay();
|
||
|
|
||
|
cache->set(cell_name + "->DriveRes->Q", q_ron);
|
||
|
cache->set(cell_name + "->Delay->D_to_Q", d_to_q_delay);
|
||
|
cache->set(cell_name + "->Delay->G_to_Q", g_to_q_delay);
|
||
|
Log::printLine(cell_name + "->DriveRes->Q=" + (String) q_ron);
|
||
|
Log::printLine(cell_name + "->Delay->D_to_Q=" + (String) d_to_q_delay);
|
||
|
Log::printLine(cell_name + "->Delay->G_to_Q=" + (String) g_to_q_delay);
|
||
|
|
||
|
return;
|
||
|
// --------------------------------------------------------------------
|
||
|
|
||
|
}
|
||
|
|
||
|
} // namespace DSENT
|
||
|
|