ext/dsent/model/std_cells/LATQ.cc - public/gem5 - Git at Google

 /* Copyright (c) 2012 Massachusetts Institute of Technology
  *
  * Permission is hereby granted, free of charge, to any person obtaining a copy
  * of this software and associated documentation files (the "Software"), to deal
  * in the Software without restriction, including without limitation the rights
  * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
  * copies of the Software, and to permit persons to whom the Software is
  * furnished to do so, subject to the following conditions:
  *
  * The above copyright notice and this permission notice shall be included in
  * all copies or substantial portions of the Software.
  *
  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
  * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
  * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
  * THE SOFTWARE.
  */

 #include "model/std_cells/LATQ.h"

 #include <cmath>

 #include "model/PortInfo.h"
 #include "model/TransitionInfo.h"
 #include "model/EventInfo.h"
 #include "model/std_cells/StdCellLib.h"
 #include "model/std_cells/CellMacros.h"
 #include "model/timing_graph/ElectricalNet.h"
 #include "model/timing_graph/ElectricalDriver.h"
 #include "model/timing_graph/ElectricalLoad.h"
 #include "model/timing_graph/ElectricalDelay.h"

 namespace DSENT
 {
     using std::ceil;
     using std::max;
     using std::min;

     LATQ::LATQ(const String& instance_name_, const TechModel* tech_model_)
         : StdCell(instance_name_, tech_model_)
     {
         initProperties();
     }

     LATQ::~LATQ()
     {}

     void LATQ::initProperties()
     {
         return;
     }

     void LATQ::constructModel()
     {
         // All constructModel should do is create Area/NDDPower/Energy Results as
         // well as instantiate any sub-instances using only the hard parameters

         createInputPort("D");
         createInputPort("G");
         createOutputPort("Q");

         createLoad("D_Cap");
         createLoad("G_Cap");
         createDelay("D_to_Q_delay");
         createDelay("G_to_Q_delay");
         createDriver("Q_Ron", true);

         ElectricalLoad* d_cap = getLoad("D_Cap");
         ElectricalLoad* g_cap = getLoad("G_Cap");
         ElectricalDelay* d_to_q_delay = getDelay("D_to_Q_delay");
         ElectricalDelay* g_to_q_delay = getDelay("G_to_Q_delay");
         ElectricalDriver* q_ron = getDriver("Q_Ron");

         getNet("D")->addDownstreamNode(d_cap);
         getNet("G")->addDownstreamNode(g_cap);
         d_cap->addDownstreamNode(d_to_q_delay);
         g_cap->addDownstreamNode(g_to_q_delay);
         g_to_q_delay->addDownstreamNode(q_ron);
         q_ron->addDownstreamNode(getNet("Q"));

         // Create Area result
         // Create NDD Power result
         createElectricalAtomicResults();
         // Create G Event Energy Result
         createElectricalEventAtomicResult("G");
         // Create DFF Event Energy Result
         createElectricalEventAtomicResult("LATD");
         createElectricalEventAtomicResult("LATQ");
         // Create Idle event for leakage
         // G pin is assumed to be on all the time
         //createElectricalEventAtomicResult("Idle");
         getEventInfo("Idle")->setStaticTransitionInfos();
         return;
     }

     void LATQ::updateModel()
     {
         // Get parameters
         double drive_strength = getDrivingStrength();
         Map<double>* cache = getTechModel()->getStdCellLib()->getStdCellCache();

         // Standard cell cache string
         String cell_name = "LATQ_X" + (String) drive_strength;

         // Get timing parameters
         getLoad("D_Cap")->setLoadCap(cache->get(cell_name + "->Cap->D"));
         getLoad("G_Cap")->setLoadCap(cache->get(cell_name + "->Cap->G"));
         getDriver("Q_Ron")->setOutputRes(cache->get(cell_name + "->DriveRes->Q"));
         getDelay("G_to_Q_delay")->setDelay(cache->get(cell_name + "->Delay->G_to_Q"));
         getDelay("D_to_Q_delay")->setDelay(cache->get(cell_name + "->Delay->D_to_Q"));

         // Set the cell area
         getAreaResult("Active")->setValue(cache->get(cell_name + "->Area->Active"));
         getAreaResult("Metal1Wire")->setValue(cache->get(cell_name + "->Area->Metal1Wire"));

         return;
     }

     void LATQ::evaluateModel()
     {
         return;
     }

     void LATQ::useModel()
     {
         // Get parameters
         double drive_strength = getDrivingStrength();
         Map<double>* cache = getTechModel()->getStdCellLib()->getStdCellCache();

         // Standard cell cache string
         String cell_name = "LATQ_X" + (String) drive_strength;

         // Propagate the transition info and get P_D, P_M, and P_Q
         propagateTransitionInfo();
         double P_D = getInputPort("D")->getTransitionInfo().getProbability1();
         double P_G = getInputPort("G")->getTransitionInfo().getProbability1();
         double P_Q = getOutputPort("Q")->getTransitionInfo().getProbability1();
         double G_num_trans_01 = getInputPort("G")->getTransitionInfo().getNumberTransitions01();
         double D_num_trans_01 = getInputPort("D")->getTransitionInfo().getNumberTransitions01();
         double Q_num_trans_01 = getOutputPort("Q")->getTransitionInfo().getNumberTransitions01();

         // Calculate leakage
         double leakage = 0;
         leakage += cache->get(cell_name + "->Leakage->!D!G!Q") * (1 - P_D) * (1 - P_G) * (1 - P_Q);
         leakage += cache->get(cell_name + "->Leakage->!D!GQ") * (1 - P_D) * (1 - P_G) * P_Q;
         leakage += cache->get(cell_name + "->Leakage->!DG!Q") * (1 - P_D) * P_G * (1 - P_Q);
         leakage += cache->get(cell_name + "->Leakage->D!G!Q") * P_D * (1 - P_G) * (1 - P_Q);
         leakage += cache->get(cell_name + "->Leakage->D!GQ") * P_D * (1 - P_G) * P_Q;
         leakage += cache->get(cell_name + "->Leakage->DGQ") * P_D * P_G * P_Q;
         getNddPowerResult("Leakage")->setValue(leakage);

         // Get VDD
         double vdd = getTechModel()->get("Vdd");

         // Get capacitances
         double g_b_cap = cache->get(cell_name + "->Cap->G_b");
         double d_b_cap = cache->get(cell_name + "->Cap->D_b");
         double q_i_cap = cache->get(cell_name + "->Cap->Q_i");
         double q_b_cap = cache->get(cell_name + "->Cap->Q_b");
         double q_cap = cache->get(cell_name + "->Cap->Q");
         double q_load_cap = getNet("Q")->getTotalDownstreamCap();

         // Calculate G Event energy
         double g_event_energy = 0.0;
         g_event_energy += (g_b_cap) * G_num_trans_01;
         g_event_energy *= vdd * vdd;
         getEventResult("G")->setValue(g_event_energy);
         // Calculate LATD Event energy
         double latd_event_energy = 0.0;
         latd_event_energy += (d_b_cap) * D_num_trans_01;
         latd_event_energy *= vdd * vdd;
         getEventResult("LATD")->setValue(latd_event_energy);
         // Calculate LATQ Event energy
         double latq_event_energy = 0.0;
         latq_event_energy += (q_i_cap + q_b_cap + q_cap + q_load_cap) * Q_num_trans_01;
         latq_event_energy *= vdd * vdd;
         getEventResult("LATQ")->setValue(latq_event_energy);

         return;
     }

     void LATQ::propagateTransitionInfo()
     {
         const TransitionInfo& trans_G = getInputPort("G")->getTransitionInfo();
         const TransitionInfo& trans_D = getInputPort("D")->getTransitionInfo();

         double G_num_trans_01 = trans_G.getNumberTransitions01();
         double G_num_trans_10 = G_num_trans_01;
         double G_num_trans_00 = trans_G.getNumberTransitions00();
         double D_freq_mult = trans_D.getFrequencyMultiplier();

         // If the latch is sampling just as fast or faster than input data signal
         // Then it can capture all transitions (though it should be normalized to clock)
         if((G_num_trans_10 + G_num_trans_00) >= D_freq_mult)
         {
             const TransitionInfo& trans_Q = trans_D.scaleFrequencyMultiplier(G_num_trans_10 + G_num_trans_00);
             getOutputPort("Q")->setTransitionInfo(trans_Q);
         }
         // If the latch is sampling slower than the input data signal, then input
         // will look like they transition more
         else
         {
             // Calculate scale ratio
             double scale_ratio = (G_num_trans_10 + G_num_trans_00) / D_freq_mult;
             // 00 and 11 transitions become fewer
             double D_scaled_diff = 0.5 * (1 - scale_ratio) * (trans_D.getNumberTransitions00() + trans_D.getNumberTransitions11());
             double D_scaled_num_trans_00 = trans_D.getNumberTransitions00() * scale_ratio;
             double D_scaled_num_trans_11 = trans_D.getNumberTransitions11() * scale_ratio;
             // 01 and 10 transitions become more frequent
             double D_scaled_num_trans_10 = trans_D.getNumberTransitions01() + D_scaled_diff;

             // Create final transition info, remembering to apply scaling ratio to normalize to G
             const TransitionInfo trans_Q(   D_scaled_num_trans_00 * scale_ratio,
                                             D_scaled_num_trans_10 * scale_ratio,
                                             D_scaled_num_trans_11 * scale_ratio);
             getOutputPort("Q")->setTransitionInfo(trans_Q);
         }

         return;
     }

     // Creates the standard cell, characterizes and abstracts away the details
     void LATQ::cacheStdCell(StdCellLib* cell_lib_, double drive_strength_)
     {
         // Get parameters
         double gate_pitch = cell_lib_->getTechModel()->get("Gate->PitchContacted");
         Map<double>* cache = cell_lib_->getStdCellCache();

         // Standard cell cache string
         String cell_name = "LATQ_X" + (String) drive_strength_;

         Log::printLine("=== " + cell_name + " ===");


         // Now actually build the full standard cell model
         createInputPort("D");
         createInputPort("G");
         createOutputPort("Q");

         createNet("D_b");
         createNet("Q_i");
         createNet("Q_b");
         createNet("G_b");

         // Adds macros
         CellMacros::addInverter(this, "INV1", false, true, "D", "D_b");
         CellMacros::addInverter(this, "INV2", false, true, "Q_i", "Q_b");
         CellMacros::addInverter(this, "INV3", false, true, "Q_b", "Q");
         CellMacros::addInverter(this, "INV4", false, true, "G", "G_b");
         CellMacros::addTristate(this, "INVZ1", false, true, false, false, "D_b", "G", "G_b", "Q_i");        //trace timing through A->ZN path only
         CellMacros::addTristate(this, "INVZ2", false, false, false, false, "Q_b", "G_b", "G", "Q_i");       //don't trace timing through the feedback path

         // Update macros
         CellMacros::updateInverter(this, "INV1", drive_strength_ * 0.125);
         CellMacros::updateInverter(this, "INV2", drive_strength_ * 0.5);
         CellMacros::updateInverter(this, "INV3", drive_strength_ * 1.0);
         CellMacros::updateInverter(this, "INV4", drive_strength_ * 0.125);
         CellMacros::updateTristate(this, "INVZ1", drive_strength_ * 0.5);
         CellMacros::updateTristate(this, "INVZ2", drive_strength_ * 0.0625);

         // Cache area result
         double area = 0.0;
         area += gate_pitch * getTotalHeight() * 1;
         area += gate_pitch * getTotalHeight() * getGenProperties()->get("INV1_GatePitches").toDouble();
         area += gate_pitch * getTotalHeight() * getGenProperties()->get("INV2_GatePitches").toDouble();
         area += gate_pitch * getTotalHeight() * getGenProperties()->get("INV3_GatePitches").toDouble();
         area += gate_pitch * getTotalHeight() * getGenProperties()->get("INV4_GatePitches").toDouble();
         area += gate_pitch * getTotalHeight() * getGenProperties()->get("INVZ1_GatePitches").toDouble();
         area += gate_pitch * getTotalHeight() * getGenProperties()->get("INVZ2_GatePitches").toDouble();
         cache->set(cell_name + "->Area->Active", area);
         cache->set(cell_name + "->Area->Metal1Wire", area);     //Cover-block m1 area
         Log::printLine(cell_name + "->Area->Active=" + (String) area);
         Log::printLine(cell_name + "->Area->Metal1Wire=" + (String) area);

         // --------------------------------------------------------------------
         // Leakage Model Calculation
         // --------------------------------------------------------------------
         // Cache leakage power results (for every single signal combination)
         double leakage_000 = 0;         //!D, !G, !Q
         double leakage_001 = 0;         //!D, !G, Q
         double leakage_010 = 0;         //!D, G, !Q
         double leakage_100 = 0;         //D, !G, !Q
         double leakage_101 = 0;         //D, !G, Q
         double leakage_111 = 0;         //D, G, Q

         //This is so painful...
         leakage_000 += getGenProperties()->get("INV1_LeakagePower_0").toDouble();
         leakage_000 += getGenProperties()->get("INV2_LeakagePower_0").toDouble();
         leakage_000 += getGenProperties()->get("INV3_LeakagePower_1").toDouble();
         leakage_000 += getGenProperties()->get("INV4_LeakagePower_0").toDouble();
         leakage_000 += getGenProperties()->get("INVZ1_LeakagePower_011_0").toDouble();
         leakage_000 += getGenProperties()->get("INVZ2_LeakagePower_101_0").toDouble();

         leakage_001 += getGenProperties()->get("INV1_LeakagePower_0").toDouble();
         leakage_001 += getGenProperties()->get("INV2_LeakagePower_0").toDouble();
         leakage_001 += getGenProperties()->get("INV3_LeakagePower_0").toDouble();
         leakage_001 += getGenProperties()->get("INV4_LeakagePower_0").toDouble();
         leakage_001 += getGenProperties()->get("INVZ1_LeakagePower_011_1").toDouble();
         leakage_001 += getGenProperties()->get("INVZ2_LeakagePower_100_1").toDouble();

         leakage_010 += getGenProperties()->get("INV1_LeakagePower_0").toDouble();
         leakage_010 += getGenProperties()->get("INV2_LeakagePower_0").toDouble();
         leakage_010 += getGenProperties()->get("INV3_LeakagePower_1").toDouble();
         leakage_010 += getGenProperties()->get("INV4_LeakagePower_1").toDouble();
         leakage_010 += getGenProperties()->get("INVZ1_LeakagePower_101_0").toDouble();
         leakage_010 += getGenProperties()->get("INVZ2_LeakagePower_011_0").toDouble();

         leakage_100 += getGenProperties()->get("INV1_LeakagePower_1").toDouble();
         leakage_100 += getGenProperties()->get("INV2_LeakagePower_1").toDouble();
         leakage_100 += getGenProperties()->get("INV3_LeakagePower_1").toDouble();
         leakage_100 += getGenProperties()->get("INV4_LeakagePower_0").toDouble();
         leakage_100 += getGenProperties()->get("INVZ1_LeakagePower_010_0").toDouble();
         leakage_100 += getGenProperties()->get("INVZ2_LeakagePower_101_0").toDouble();

         leakage_101 += getGenProperties()->get("INV1_LeakagePower_1").toDouble();
         leakage_101 += getGenProperties()->get("INV2_LeakagePower_1").toDouble();
         leakage_101 += getGenProperties()->get("INV3_LeakagePower_0").toDouble();
         leakage_101 += getGenProperties()->get("INV4_LeakagePower_0").toDouble();
         leakage_101 += getGenProperties()->get("INVZ1_LeakagePower_010_1").toDouble();
         leakage_101 += getGenProperties()->get("INVZ2_LeakagePower_100_1").toDouble();

         leakage_111 += getGenProperties()->get("INV1_LeakagePower_1").toDouble();
         leakage_111 += getGenProperties()->get("INV2_LeakagePower_1").toDouble();
         leakage_111 += getGenProperties()->get("INV3_LeakagePower_0").toDouble();
         leakage_111 += getGenProperties()->get("INV4_LeakagePower_1").toDouble();
         leakage_111 += getGenProperties()->get("INVZ1_LeakagePower_100_1").toDouble();
         leakage_111 += getGenProperties()->get("INVZ2_LeakagePower_010_1").toDouble();

         cache->set(cell_name + "->Leakage->!D!G!Q", leakage_000);
         cache->set(cell_name + "->Leakage->!D!GQ", leakage_001);
         cache->set(cell_name + "->Leakage->!DG!Q", leakage_010);
         cache->set(cell_name + "->Leakage->D!G!Q", leakage_100);
         cache->set(cell_name + "->Leakage->D!GQ", leakage_101);
         cache->set(cell_name + "->Leakage->DGQ", leakage_111);
         Log::printLine(cell_name + "->Leakage->!D!G!Q=" + (String) leakage_000);
         Log::printLine(cell_name + "->Leakage->!D!GQ=" + (String) leakage_001);
         Log::printLine(cell_name + "->Leakage->!DG!Q=" + (String) leakage_010);
         Log::printLine(cell_name + "->Leakage->D!G!Q=" + (String) leakage_100);
         Log::printLine(cell_name + "->Leakage->D!GQ=" + (String) leakage_101);
         Log::printLine(cell_name + "->Leakage->DGQ=" + (String) leakage_111);
         // --------------------------------------------------------------------

         // --------------------------------------------------------------------
         // Get Node Capacitances
         // --------------------------------------------------------------------
         double d_cap = getNet("D")->getTotalDownstreamCap();
         double d_b_cap = getNet("D_b")->getTotalDownstreamCap();
         double q_i_cap = getNet("Q_i")->getTotalDownstreamCap();
         double q_b_cap = getNet("Q_b")->getTotalDownstreamCap();
         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
	/* Copyright (c) 2012 Massachusetts Institute of Technology
	*
	* Permission is hereby granted, free of charge, to any person obtaining a copy
	* of this software and associated documentation files (the "Software"), to deal
	* in the Software without restriction, including without limitation the rights
	* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
	* copies of the Software, and to permit persons to whom the Software is
	* furnished to do so, subject to the following conditions:
	*
	* The above copyright notice and this permission notice shall be included in
	* all copies or substantial portions of the Software.
	*
	* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
	* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
	* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
	* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
	* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
	* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
	* THE SOFTWARE.
	*/

	#include "model/std_cells/LATQ.h"

	#include <cmath>

	#include "model/PortInfo.h"
	#include "model/TransitionInfo.h"
	#include "model/EventInfo.h"
	#include "model/std_cells/StdCellLib.h"
	#include "model/std_cells/CellMacros.h"
	#include "model/timing_graph/ElectricalNet.h"
	#include "model/timing_graph/ElectricalDriver.h"
	#include "model/timing_graph/ElectricalLoad.h"
	#include "model/timing_graph/ElectricalDelay.h"

	namespace DSENT
	{
	using std::ceil;
	using std::max;
	using std::min;

	LATQ::LATQ(const String& instance_name_, const TechModel* tech_model_)
	: StdCell(instance_name_, tech_model_)
	{
	initProperties();
	}

	LATQ::~LATQ()
	{}

	void LATQ::initProperties()
	{
	return;
	}

	void LATQ::constructModel()
	{
	// All constructModel should do is create Area/NDDPower/Energy Results as
	// well as instantiate any sub-instances using only the hard parameters

	createInputPort("D");
	createInputPort("G");
	createOutputPort("Q");

	createLoad("D_Cap");
	createLoad("G_Cap");
	createDelay("D_to_Q_delay");
	createDelay("G_to_Q_delay");
	createDriver("Q_Ron", true);

	ElectricalLoad* d_cap = getLoad("D_Cap");
	ElectricalLoad* g_cap = getLoad("G_Cap");
	ElectricalDelay* d_to_q_delay = getDelay("D_to_Q_delay");
	ElectricalDelay* g_to_q_delay = getDelay("G_to_Q_delay");
	ElectricalDriver* q_ron = getDriver("Q_Ron");

	getNet("D")->addDownstreamNode(d_cap);
	getNet("G")->addDownstreamNode(g_cap);
	d_cap->addDownstreamNode(d_to_q_delay);
	g_cap->addDownstreamNode(g_to_q_delay);
	g_to_q_delay->addDownstreamNode(q_ron);
	q_ron->addDownstreamNode(getNet("Q"));

	// Create Area result
	// Create NDD Power result
	createElectricalAtomicResults();
	// Create G Event Energy Result
	createElectricalEventAtomicResult("G");
	// Create DFF Event Energy Result
	createElectricalEventAtomicResult("LATD");
	createElectricalEventAtomicResult("LATQ");
	// Create Idle event for leakage
	// G pin is assumed to be on all the time
	//createElectricalEventAtomicResult("Idle");
	getEventInfo("Idle")->setStaticTransitionInfos();
	return;
	}

	void LATQ::updateModel()
	{
	// Get parameters
	double drive_strength = getDrivingStrength();
	Map<double>* cache = getTechModel()->getStdCellLib()->getStdCellCache();

	// Standard cell cache string
	String cell_name = "LATQ_X" + (String) drive_strength;

	// Get timing parameters
	getLoad("D_Cap")->setLoadCap(cache->get(cell_name + "->Cap->D"));
	getLoad("G_Cap")->setLoadCap(cache->get(cell_name + "->Cap->G"));
	getDriver("Q_Ron")->setOutputRes(cache->get(cell_name + "->DriveRes->Q"));
	getDelay("G_to_Q_delay")->setDelay(cache->get(cell_name + "->Delay->G_to_Q"));
	getDelay("D_to_Q_delay")->setDelay(cache->get(cell_name + "->Delay->D_to_Q"));

	// Set the cell area
	getAreaResult("Active")->setValue(cache->get(cell_name + "->Area->Active"));
	getAreaResult("Metal1Wire")->setValue(cache->get(cell_name + "->Area->Metal1Wire"));

	return;
	}

	void LATQ::evaluateModel()
	{
	return;
	}

	void LATQ::useModel()
	{
	// Get parameters
	double drive_strength = getDrivingStrength();
	Map<double>* cache = getTechModel()->getStdCellLib()->getStdCellCache();

	// Standard cell cache string
	String cell_name = "LATQ_X" + (String) drive_strength;

	// Propagate the transition info and get P_D, P_M, and P_Q
	propagateTransitionInfo();
	double P_D = getInputPort("D")->getTransitionInfo().getProbability1();
	double P_G = getInputPort("G")->getTransitionInfo().getProbability1();
	double P_Q = getOutputPort("Q")->getTransitionInfo().getProbability1();
	double G_num_trans_01 = getInputPort("G")->getTransitionInfo().getNumberTransitions01();
	double D_num_trans_01 = getInputPort("D")->getTransitionInfo().getNumberTransitions01();
	double Q_num_trans_01 = getOutputPort("Q")->getTransitionInfo().getNumberTransitions01();

	// Calculate leakage
	double leakage = 0;
	leakage += cache->get(cell_name + "->Leakage->!D!G!Q") * (1 - P_D) * (1 - P_G) * (1 - P_Q);
	leakage += cache->get(cell_name + "->Leakage->!D!GQ") * (1 - P_D) * (1 - P_G) * P_Q;
	leakage += cache->get(cell_name + "->Leakage->!DG!Q") * (1 - P_D) * P_G * (1 - P_Q);
	leakage += cache->get(cell_name + "->Leakage->D!G!Q") * P_D * (1 - P_G) * (1 - P_Q);
	leakage += cache->get(cell_name + "->Leakage->D!GQ") * P_D * (1 - P_G) * P_Q;
	leakage += cache->get(cell_name + "->Leakage->DGQ") * P_D * P_G * P_Q;
	getNddPowerResult("Leakage")->setValue(leakage);

	// Get VDD
	double vdd = getTechModel()->get("Vdd");

	// Get capacitances
	double g_b_cap = cache->get(cell_name + "->Cap->G_b");
	double d_b_cap = cache->get(cell_name + "->Cap->D_b");
	double q_i_cap = cache->get(cell_name + "->Cap->Q_i");
	double q_b_cap = cache->get(cell_name + "->Cap->Q_b");
	double q_cap = cache->get(cell_name + "->Cap->Q");
	double q_load_cap = getNet("Q")->getTotalDownstreamCap();

	// Calculate G Event energy
	double g_event_energy = 0.0;
	g_event_energy += (g_b_cap) * G_num_trans_01;
	g_event_energy = vdd vdd;
	getEventResult("G")->setValue(g_event_energy);
	// Calculate LATD Event energy
	double latd_event_energy = 0.0;
	latd_event_energy += (d_b_cap) * D_num_trans_01;
	latd_event_energy = vdd vdd;
	getEventResult("LATD")->setValue(latd_event_energy);
	// Calculate LATQ Event energy
	double latq_event_energy = 0.0;
	latq_event_energy += (q_i_cap + q_b_cap + q_cap + q_load_cap) * Q_num_trans_01;
	latq_event_energy = vdd vdd;
	getEventResult("LATQ")->setValue(latq_event_energy);

	return;
	}

	void LATQ::propagateTransitionInfo()
	{
	const TransitionInfo& trans_G = getInputPort("G")->getTransitionInfo();
	const TransitionInfo& trans_D = getInputPort("D")->getTransitionInfo();

	double G_num_trans_01 = trans_G.getNumberTransitions01();
	double G_num_trans_10 = G_num_trans_01;
	double G_num_trans_00 = trans_G.getNumberTransitions00();
	double D_freq_mult = trans_D.getFrequencyMultiplier();

	// If the latch is sampling just as fast or faster than input data signal
	// Then it can capture all transitions (though it should be normalized to clock)
	if((G_num_trans_10 + G_num_trans_00) >= D_freq_mult)
	{
	const TransitionInfo& trans_Q = trans_D.scaleFrequencyMultiplier(G_num_trans_10 + G_num_trans_00);
	getOutputPort("Q")->setTransitionInfo(trans_Q);
	}
	// If the latch is sampling slower than the input data signal, then input
	// will look like they transition more
	else
	{
	// Calculate scale ratio
	double scale_ratio = (G_num_trans_10 + G_num_trans_00) / D_freq_mult;
	// 00 and 11 transitions become fewer
	double D_scaled_diff = 0.5 * (1 - scale_ratio) * (trans_D.getNumberTransitions00() + trans_D.getNumberTransitions11());
	double D_scaled_num_trans_00 = trans_D.getNumberTransitions00() * scale_ratio;
	double D_scaled_num_trans_11 = trans_D.getNumberTransitions11() * scale_ratio;
	// 01 and 10 transitions become more frequent
	double D_scaled_num_trans_10 = trans_D.getNumberTransitions01() + D_scaled_diff;

	// Create final transition info, remembering to apply scaling ratio to normalize to G
	const TransitionInfo trans_Q( D_scaled_num_trans_00 * scale_ratio,
	D_scaled_num_trans_10 * scale_ratio,
	D_scaled_num_trans_11 * scale_ratio);
	getOutputPort("Q")->setTransitionInfo(trans_Q);
	}

	return;
	}

	// Creates the standard cell, characterizes and abstracts away the details
	void LATQ::cacheStdCell(StdCellLib* cell_lib_, double drive_strength_)
	{
	// Get parameters
	double gate_pitch = cell_lib_->getTechModel()->get("Gate->PitchContacted");
	Map<double>* cache = cell_lib_->getStdCellCache();

	// Standard cell cache string
	String cell_name = "LATQ_X" + (String) drive_strength_;

	Log::printLine("=== " + cell_name + " ===");


	// Now actually build the full standard cell model
	createInputPort("D");
	createInputPort("G");
	createOutputPort("Q");

	createNet("D_b");
	createNet("Q_i");
	createNet("Q_b");
	createNet("G_b");

	// Adds macros
	CellMacros::addInverter(this, "INV1", false, true, "D", "D_b");
	CellMacros::addInverter(this, "INV2", false, true, "Q_i", "Q_b");
	CellMacros::addInverter(this, "INV3", false, true, "Q_b", "Q");
	CellMacros::addInverter(this, "INV4", false, true, "G", "G_b");
	CellMacros::addTristate(this, "INVZ1", false, true, false, false, "D_b", "G", "G_b", "Q_i"); //trace timing through A->ZN path only
	CellMacros::addTristate(this, "INVZ2", false, false, false, false, "Q_b", "G_b", "G", "Q_i"); //don't trace timing through the feedback path

	// Update macros
	CellMacros::updateInverter(this, "INV1", drive_strength_ * 0.125);
	CellMacros::updateInverter(this, "INV2", drive_strength_ * 0.5);
	CellMacros::updateInverter(this, "INV3", drive_strength_ * 1.0);
	CellMacros::updateInverter(this, "INV4", drive_strength_ * 0.125);
	CellMacros::updateTristate(this, "INVZ1", drive_strength_ * 0.5);
	CellMacros::updateTristate(this, "INVZ2", drive_strength_ * 0.0625);

	// Cache area result
	double area = 0.0;
	area += gate_pitch * getTotalHeight() * 1;
	area += gate_pitch * getTotalHeight() * getGenProperties()->get("INV1_GatePitches").toDouble();
	area += gate_pitch * getTotalHeight() * getGenProperties()->get("INV2_GatePitches").toDouble();
	area += gate_pitch * getTotalHeight() * getGenProperties()->get("INV3_GatePitches").toDouble();
	area += gate_pitch * getTotalHeight() * getGenProperties()->get("INV4_GatePitches").toDouble();
	area += gate_pitch * getTotalHeight() * getGenProperties()->get("INVZ1_GatePitches").toDouble();
	area += gate_pitch * getTotalHeight() * getGenProperties()->get("INVZ2_GatePitches").toDouble();
	cache->set(cell_name + "->Area->Active", area);
	cache->set(cell_name + "->Area->Metal1Wire", area); //Cover-block m1 area
	Log::printLine(cell_name + "->Area->Active=" + (String) area);
	Log::printLine(cell_name + "->Area->Metal1Wire=" + (String) area);

	// --------------------------------------------------------------------
	// Leakage Model Calculation
	// --------------------------------------------------------------------
	// Cache leakage power results (for every single signal combination)
	double leakage_000 = 0; //!D, !G, !Q
	double leakage_001 = 0; //!D, !G, Q
	double leakage_010 = 0; //!D, G, !Q
	double leakage_100 = 0; //D, !G, !Q
	double leakage_101 = 0; //D, !G, Q
	double leakage_111 = 0; //D, G, Q

	//This is so painful...
	leakage_000 += getGenProperties()->get("INV1_LeakagePower_0").toDouble();
	leakage_000 += getGenProperties()->get("INV2_LeakagePower_0").toDouble();
	leakage_000 += getGenProperties()->get("INV3_LeakagePower_1").toDouble();
	leakage_000 += getGenProperties()->get("INV4_LeakagePower_0").toDouble();
	leakage_000 += getGenProperties()->get("INVZ1_LeakagePower_011_0").toDouble();
	leakage_000 += getGenProperties()->get("INVZ2_LeakagePower_101_0").toDouble();

	leakage_001 += getGenProperties()->get("INV1_LeakagePower_0").toDouble();
	leakage_001 += getGenProperties()->get("INV2_LeakagePower_0").toDouble();
	leakage_001 += getGenProperties()->get("INV3_LeakagePower_0").toDouble();
	leakage_001 += getGenProperties()->get("INV4_LeakagePower_0").toDouble();
	leakage_001 += getGenProperties()->get("INVZ1_LeakagePower_011_1").toDouble();
	leakage_001 += getGenProperties()->get("INVZ2_LeakagePower_100_1").toDouble();

	leakage_010 += getGenProperties()->get("INV1_LeakagePower_0").toDouble();
	leakage_010 += getGenProperties()->get("INV2_LeakagePower_0").toDouble();
	leakage_010 += getGenProperties()->get("INV3_LeakagePower_1").toDouble();
	leakage_010 += getGenProperties()->get("INV4_LeakagePower_1").toDouble();
	leakage_010 += getGenProperties()->get("INVZ1_LeakagePower_101_0").toDouble();
	leakage_010 += getGenProperties()->get("INVZ2_LeakagePower_011_0").toDouble();

	leakage_100 += getGenProperties()->get("INV1_LeakagePower_1").toDouble();
	leakage_100 += getGenProperties()->get("INV2_LeakagePower_1").toDouble();
	leakage_100 += getGenProperties()->get("INV3_LeakagePower_1").toDouble();
	leakage_100 += getGenProperties()->get("INV4_LeakagePower_0").toDouble();
	leakage_100 += getGenProperties()->get("INVZ1_LeakagePower_010_0").toDouble();
	leakage_100 += getGenProperties()->get("INVZ2_LeakagePower_101_0").toDouble();

	leakage_101 += getGenProperties()->get("INV1_LeakagePower_1").toDouble();
	leakage_101 += getGenProperties()->get("INV2_LeakagePower_1").toDouble();
	leakage_101 += getGenProperties()->get("INV3_LeakagePower_0").toDouble();
	leakage_101 += getGenProperties()->get("INV4_LeakagePower_0").toDouble();
	leakage_101 += getGenProperties()->get("INVZ1_LeakagePower_010_1").toDouble();
	leakage_101 += getGenProperties()->get("INVZ2_LeakagePower_100_1").toDouble();

	leakage_111 += getGenProperties()->get("INV1_LeakagePower_1").toDouble();
	leakage_111 += getGenProperties()->get("INV2_LeakagePower_1").toDouble();
	leakage_111 += getGenProperties()->get("INV3_LeakagePower_0").toDouble();
	leakage_111 += getGenProperties()->get("INV4_LeakagePower_1").toDouble();
	leakage_111 += getGenProperties()->get("INVZ1_LeakagePower_100_1").toDouble();
	leakage_111 += getGenProperties()->get("INVZ2_LeakagePower_010_1").toDouble();

	cache->set(cell_name + "->Leakage->!D!G!Q", leakage_000);
	cache->set(cell_name + "->Leakage->!D!GQ", leakage_001);
	cache->set(cell_name + "->Leakage->!DG!Q", leakage_010);
	cache->set(cell_name + "->Leakage->D!G!Q", leakage_100);
	cache->set(cell_name + "->Leakage->D!GQ", leakage_101);
	cache->set(cell_name + "->Leakage->DGQ", leakage_111);
	Log::printLine(cell_name + "->Leakage->!D!G!Q=" + (String) leakage_000);
	Log::printLine(cell_name + "->Leakage->!D!GQ=" + (String) leakage_001);
	Log::printLine(cell_name + "->Leakage->!DG!Q=" + (String) leakage_010);
	Log::printLine(cell_name + "->Leakage->D!G!Q=" + (String) leakage_100);
	Log::printLine(cell_name + "->Leakage->D!GQ=" + (String) leakage_101);
	Log::printLine(cell_name + "->Leakage->DGQ=" + (String) leakage_111);
	// --------------------------------------------------------------------

	// --------------------------------------------------------------------
	// Get Node Capacitances
	// --------------------------------------------------------------------
	double d_cap = getNet("D")->getTotalDownstreamCap();
	double d_b_cap = getNet("D_b")->getTotalDownstreamCap();
	double q_i_cap = getNet("Q_i")->getTotalDownstreamCap();
	double q_b_cap = getNet("Q_b")->getTotalDownstreamCap();
	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