/* 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/MUX2.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;
MUX2::MUX2(const String& instance_name_, const TechModel* tech_model_)
: StdCell(instance_name_, tech_model_)
{
initProperties();
}
MUX2::~MUX2()
{}
void MUX2::initProperties()
{
return;
}
void MUX2::constructModel()
{
// All constructModel should do is create Area/NDDPower/Energy Results as
// well as instantiate any sub-instances using only the hard parameters
createInputPort("A");
createInputPort("B");
createInputPort("S0");
createOutputPort("Y");
createLoad("A_Cap");
createLoad("B_Cap");
createLoad("S0_Cap");
createDelay("A_to_Y_delay");
createDelay("B_to_Y_delay");
createDelay("S0_to_Y_delay");
createDriver("Y_Ron", true);
ElectricalLoad* a_cap = getLoad("A_Cap");
ElectricalLoad* b_cap = getLoad("B_Cap");
ElectricalLoad* s0_cap = getLoad("S0_Cap");
ElectricalDelay* a_to_y_delay = getDelay("A_to_Y_delay");
ElectricalDelay* b_to_y_delay = getDelay("B_to_Y_delay");
ElectricalDelay* s0_to_y_delay = getDelay("S0_to_Y_delay");
ElectricalDriver* y_ron = getDriver("Y_Ron");
getNet("A")->addDownstreamNode(a_cap);
getNet("B")->addDownstreamNode(b_cap);
getNet("S0")->addDownstreamNode(s0_cap);
a_cap->addDownstreamNode(a_to_y_delay);
b_cap->addDownstreamNode(b_to_y_delay);
s0_cap->addDownstreamNode(s0_to_y_delay);
a_to_y_delay->addDownstreamNode(y_ron);
b_to_y_delay->addDownstreamNode(y_ron);
s0_to_y_delay->addDownstreamNode(y_ron);
y_ron->addDownstreamNode(getNet("Y"));
// Create Area result
createElectricalAtomicResults();
getEventInfo("Idle")->setStaticTransitionInfos();
// Create MUX2 Event Energy Result
createElectricalEventAtomicResult("MUX2");
return;
}
void MUX2::updateModel()
{
// Get parameters
double drive_strength = getDrivingStrength();
Map<double>* cache = getTechModel()->getStdCellLib()->getStdCellCache();
// Standard cell cache string
String cell_name = "MUX2_X" + (String) drive_strength;
// Get timing parameters
getLoad("A_Cap")->setLoadCap(cache->get(cell_name + "->Cap->A"));
getLoad("B_Cap")->setLoadCap(cache->get(cell_name + "->Cap->B"));
getLoad("S0_Cap")->setLoadCap(cache->get(cell_name + "->Cap->S0"));
getDelay("A_to_Y_delay")->setDelay(cache->get(cell_name + "->Delay->A_to_Y"));
getDelay("B_to_Y_delay")->setDelay(cache->get(cell_name + "->Delay->B_to_Y"));
getDelay("S0_to_Y_delay")->setDelay(cache->get(cell_name + "->Delay->S0_to_Y"));
getDriver("Y_Ron")->setOutputRes(cache->get(cell_name + "->DriveRes->Y"));
// Set the cell area
getAreaResult("Active")->setValue(cache->get(cell_name + "->ActiveArea"));
getAreaResult("Metal1Wire")->setValue(cache->get(cell_name + "->ActiveArea"));
return;
}
void MUX2::evaluateModel()
{
return;
}
void MUX2::useModel()
{
// Get parameters
double drive_strength = getDrivingStrength();
Map<double>* cache = getTechModel()->getStdCellLib()->getStdCellCache();
// Standard cell cache string
String cell_name = "MUX2_X" + (String) drive_strength;
// Propagate the transition and get the 0->1 transition count
propagateTransitionInfo();
double P_A = getInputPort("A")->getTransitionInfo().getProbability1();
double P_B = getInputPort("B")->getTransitionInfo().getProbability1();
double P_S0 = getInputPort("S0")->getTransitionInfo().getProbability1();
double S0_num_trans_01 = getInputPort("S0")->getTransitionInfo().getNumberTransitions01();
double Y_num_trans_01 = getOutputPort("Y")->getTransitionInfo().getNumberTransitions01();
// Calculate leakage
double leakage = 0;
leakage += cache->get(cell_name + "->Leakage->!A!B!S0") * (1 - P_A) * (1 - P_B) * (1 - P_S0);
leakage += cache->get(cell_name + "->Leakage->!A!BS0") * (1 - P_A) * (1 - P_B) * P_S0;
leakage += cache->get(cell_name + "->Leakage->!AB!S0") * (1 - P_A) * P_B * (1 - P_S0);
leakage += cache->get(cell_name + "->Leakage->!ABS0") * (1 - P_A) * P_B * P_S0;
leakage += cache->get(cell_name + "->Leakage->A!B!S0") * P_A * (1 - P_B) * (1 - P_S0);
leakage += cache->get(cell_name + "->Leakage->A!BS0") * P_A * (1 - P_B) * P_S0;
leakage += cache->get(cell_name + "->Leakage->AB!S0") * P_A * P_B * (1 - P_S0);
leakage += cache->get(cell_name + "->Leakage->ABS0") * P_A * P_B * P_S0;
getNddPowerResult("Leakage")->setValue(leakage);
// Get VDD
double vdd = getTechModel()->get("Vdd");
// Get capacitances
double s0_b_cap = cache->get(cell_name + "->Cap->S0_b");
double y_bar_cap = cache->get(cell_name + "->Cap->Y_b");
double y_cap = cache->get(cell_name + "->Cap->Y");
double y_load_cap = getNet("Y")->getTotalDownstreamCap();
// Create mux2 event energy
double mux2_event_energy = 0.0;
mux2_event_energy += (s0_b_cap) * S0_num_trans_01;
mux2_event_energy += (y_bar_cap + y_cap + y_load_cap) * Y_num_trans_01;
mux2_event_energy *= vdd * vdd;
getEventResult("MUX2")->setValue(mux2_event_energy);
return;
}
void MUX2::propagateTransitionInfo()
{
// Get input signal transition info
const TransitionInfo& trans_A = getInputPort("A")->getTransitionInfo();
const TransitionInfo& trans_B = getInputPort("B")->getTransitionInfo();
const TransitionInfo& trans_S0 = getInputPort("S0")->getTransitionInfo();
// Scale all transition information to the highest freq multiplier
double max_freq_mult = max(max(trans_A.getFrequencyMultiplier(), trans_B.getFrequencyMultiplier()), trans_S0.getFrequencyMultiplier());
const TransitionInfo& scaled_trans_A = trans_A.scaleFrequencyMultiplier(max_freq_mult);
const TransitionInfo& scaled_trans_B = trans_B.scaleFrequencyMultiplier(max_freq_mult);
const TransitionInfo& scaled_trans_S0 = trans_S0.scaleFrequencyMultiplier(max_freq_mult);
// Compute the probability of each transition on a given cycle
double A_prob_00 = scaled_trans_A.getNumberTransitions00() / max_freq_mult;
double A_prob_01 = scaled_trans_A.getNumberTransitions01() / max_freq_mult;
double A_prob_10 = A_prob_01;
double A_prob_11 = scaled_trans_A.getNumberTransitions11() / max_freq_mult;
double B_prob_00 = scaled_trans_B.getNumberTransitions00() / max_freq_mult;
double B_prob_01 = scaled_trans_B.getNumberTransitions01() / max_freq_mult;
double B_prob_10 = B_prob_01;
double B_prob_11 = scaled_trans_B.getNumberTransitions11() / max_freq_mult;
double S0_prob_00 = scaled_trans_S0.getNumberTransitions00() / max_freq_mult;
double S0_prob_01 = scaled_trans_S0.getNumberTransitions01() / max_freq_mult;
double S0_prob_10 = S0_prob_01;
double S0_prob_11 = scaled_trans_S0.getNumberTransitions11() / max_freq_mult;
// Compute output probabilities
double Y_prob_00 = S0_prob_00 * A_prob_00 +
S0_prob_01 * (A_prob_00 + A_prob_01) * (B_prob_00 + B_prob_10) +
S0_prob_10 * (A_prob_00 + A_prob_10) * (B_prob_00 + B_prob_01) +
S0_prob_11 * B_prob_00;
double Y_prob_01 = S0_prob_00 * A_prob_01 +
S0_prob_01 * (A_prob_00 + A_prob_01) * (B_prob_01 + B_prob_11) +
S0_prob_10 * (A_prob_01 + A_prob_11) * (B_prob_00 + B_prob_01) +
S0_prob_11 * B_prob_01;
double Y_prob_11 = S0_prob_00 * A_prob_11 +
S0_prob_01 * (A_prob_10 + A_prob_11) * (B_prob_01 + B_prob_11) +
S0_prob_10 * (A_prob_01 + A_prob_11) * (B_prob_10 + B_prob_11) +
S0_prob_11 * B_prob_11;
// Check that probabilities add up to 1.0 with some finite tolerance
ASSERT(LibUtil::Math::isEqual((Y_prob_00 + Y_prob_01 + Y_prob_01 + Y_prob_11), 1.0),
"[Error] " + getInstanceName() + "Output transition probabilities must add up to 1 (" +
(String) Y_prob_00 + ", " + (String) Y_prob_01 + ", " + (String) Y_prob_11 + ")!");
// Turn probability of transitions per cycle into number of transitions per time unit
TransitionInfo trans_Y(Y_prob_00 * max_freq_mult, Y_prob_01 * max_freq_mult, Y_prob_11 * max_freq_mult);
getOutputPort("Y")->setTransitionInfo(trans_Y);
return;
}
// Creates the standard cell, characterizes and abstracts away the details
void MUX2::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 = "MUX2_X" + (String) drive_strength_;
Log::printLine("=== " + cell_name + " ===");
// Now actually build the full standard cell model
createInputPort("A");
createInputPort("B");
createInputPort("S0");
createOutputPort("Y");
createNet("S0_b");
createNet("Y_b");
// Adds macros
CellMacros::addInverter(this, "INV1", false, true, "S0", "S0_b");
CellMacros::addInverter(this, "INV2", false, true, "Y_b", "Y");
CellMacros::addTristate(this, "INVZ1", true, true, true, true, "A", "S0_b", "S0", "Y_b");
CellMacros::addTristate(this, "INVZ2", true, true, true, true, "B", "S0", "S0_b", "Y_b");
// I have no idea how to size each of the parts haha
CellMacros::updateInverter(this, "INV1", drive_strength_ * 0.250);
CellMacros::updateInverter(this, "INV2", drive_strength_ * 1.000);
CellMacros::updateTristate(this, "INVZ1", drive_strength_ * 0.500);
CellMacros::updateTristate(this, "INVZ2", drive_strength_ * 0.500);
// 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("INVZ1_GatePitches").toDouble();
area += gate_pitch * getTotalHeight() * getGenProperties()->get("INVZ2_GatePitches").toDouble();
cache->set(cell_name + "->ActiveArea", area);
Log::printLine(cell_name + "->ActiveArea=" + (String) area);
// --------------------------------------------------------------------
// Cache Leakage Power (for every single signal combination)
// --------------------------------------------------------------------
double leakage_000 = 0; //!A, !B, !S0
double leakage_001 = 0; //!A, !B, S0
double leakage_010 = 0; //!A, B, !S0
double leakage_011 = 0; //!A, B, S0
double leakage_100 = 0; //A, !B, !S0
double leakage_101 = 0; //A, !B, S0
double leakage_110 = 0; //A, B, !S0
double leakage_111 = 0; //A, B, S0
//This is so painful...
leakage_000 += getGenProperties()->get("INV1_LeakagePower_0").toDouble();
leakage_000 += getGenProperties()->get("INV2_LeakagePower_1").toDouble();
leakage_000 += getGenProperties()->get("INVZ1_LeakagePower_100_1").toDouble();
leakage_000 += getGenProperties()->get("INVZ2_LeakagePower_010_1").toDouble();
leakage_001 += getGenProperties()->get("INV1_LeakagePower_1").toDouble();
leakage_001 += getGenProperties()->get("INV2_LeakagePower_1").toDouble();
leakage_001 += getGenProperties()->get("INVZ1_LeakagePower_010_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_1").toDouble();
leakage_010 += getGenProperties()->get("INVZ1_LeakagePower_100_1").toDouble();
leakage_010 += getGenProperties()->get("INVZ2_LeakagePower_011_1").toDouble();
leakage_011 += getGenProperties()->get("INV1_LeakagePower_1").toDouble();
leakage_011 += getGenProperties()->get("INV2_LeakagePower_0").toDouble();
leakage_011 += getGenProperties()->get("INVZ1_LeakagePower_010_0").toDouble();
leakage_011 += getGenProperties()->get("INVZ2_LeakagePower_101_0").toDouble();
leakage_100 += getGenProperties()->get("INV1_LeakagePower_0").toDouble();
leakage_100 += getGenProperties()->get("INV2_LeakagePower_0").toDouble();
leakage_100 += getGenProperties()->get("INVZ1_LeakagePower_101_0").toDouble();
leakage_100 += getGenProperties()->get("INVZ2_LeakagePower_010_0").toDouble();
leakage_101 += getGenProperties()->get("INV1_LeakagePower_1").toDouble();
leakage_101 += getGenProperties()->get("INV2_LeakagePower_0").toDouble();
leakage_101 += getGenProperties()->get("INVZ1_LeakagePower_011_1").toDouble();
leakage_101 += getGenProperties()->get("INVZ2_LeakagePower_100_1").toDouble();
leakage_110 += getGenProperties()->get("INV1_LeakagePower_1").toDouble();
leakage_110 += getGenProperties()->get("INV2_LeakagePower_1").toDouble();
leakage_110 += getGenProperties()->get("INVZ1_LeakagePower_101_0").toDouble();
leakage_110 += getGenProperties()->get("INVZ2_LeakagePower_011_0").toDouble();
leakage_111 += getGenProperties()->get("INV1_LeakagePower_1").toDouble();
leakage_111 += getGenProperties()->get("INV2_LeakagePower_1").toDouble();
leakage_111 += getGenProperties()->get("INVZ1_LeakagePower_011_0").toDouble();
leakage_111 += getGenProperties()->get("INVZ2_LeakagePower_101_0").toDouble();
cache->set(cell_name + "->Leakage->!A!B!S0", leakage_000);
cache->set(cell_name + "->Leakage->!A!BS0", leakage_001);
cache->set(cell_name + "->Leakage->!AB!S0", leakage_010);
cache->set(cell_name + "->Leakage->!ABS0", leakage_011);
cache->set(cell_name + "->Leakage->A!B!S0", leakage_100);
cache->set(cell_name + "->Leakage->A!BS0", leakage_101);
cache->set(cell_name + "->Leakage->AB!S0", leakage_110);
cache->set(cell_name + "->Leakage->ABS0", leakage_111);
Log::printLine(cell_name + "->Leakage->!A!B!S0=" + (String) leakage_000);
Log::printLine(cell_name + "->Leakage->!A!BS0=" + (String) leakage_001);
Log::printLine(cell_name + "->Leakage->!AB!S0=" + (String) leakage_010);
Log::printLine(cell_name + "->Leakage->!ABS0=" + (String) leakage_011);
Log::printLine(cell_name + "->Leakage->A!B!S0=" + (String) leakage_100);
Log::printLine(cell_name + "->Leakage->A!BS0=" + (String) leakage_101);
Log::printLine(cell_name + "->Leakage->AB!S0=" + (String) leakage_110);
Log::printLine(cell_name + "->Leakage->ABS0=" + (String) leakage_111);
// Cache event energy results
/*
double event_a_flip = 0.0;
event_a_flip += getGenProperties()->get("INVZ1_A_Flip").toDouble();
cache->set(cell_name + "->Event_A_Flip", event_a_flip);
Log::printLine(cell_name + "->Event_A_Flip=" + (String) event_a_flip);
double event_b_flip = 0.0;
event_b_flip += getGenProperties()->get("INVZ1_A_Flip").toDouble();
cache->set(cell_name + "->Event_B_Flip", event_b_flip);
Log::printLine(cell_name + "->Event_B_Flip=" + (String) event_b_flip);
double event_s0_flip = 0.0;
event_s0_flip += getGenProperties()->get("INV1_A_Flip").toDouble();
event_s0_flip += getGenProperties()->get("INV1_ZN_Flip").toDouble();
event_s0_flip += getGenProperties()->get("INVZ1_OE_Flip").toDouble() + getGenProperties()->get("INVZ1_OEN_Flip").toDouble();
event_s0_flip += getGenProperties()->get("INVZ2_OE_Flip").toDouble() + getGenProperties()->get("INVZ2_OEN_Flip").toDouble();
cache->set(cell_name + "->Event_S0_Flip", event_s0_flip);
Log::printLine(cell_name + "->Event_S0_Flip=" + (String) event_s0_flip);
double event_y_flip = 0.0;
event_y_flip += getGenProperties()->get("INVZ1_ZN_Flip").toDouble();
event_y_flip += getGenProperties()->get("INVZ2_ZN_Flip").toDouble();
event_y_flip += getGenProperties()->get("INV2_A_Flip").toDouble();
event_y_flip += getGenProperties()->get("INV2_ZN_Flip").toDouble();
cache->set(cell_name + "->Event_Y_Flip", event_y_flip);
Log::printLine(cell_name + "->Event_Y_Flip=" + (String) event_y_flip);
double a_cap = getLoad("INVZ1_CgA")->getLoadCap();
double b_cap = getLoad("INVZ2_CgA")->getLoadCap();
double s0_cap = getLoad("INV1_CgA")->getLoadCap() + getLoad("INVZ1_CgOEN")->getLoadCap() + getLoad("INVZ2_CgOE")->getLoadCap();
double y_ron = getDriver("INV2_RonZN")->getOutputRes();
*/
// --------------------------------------------------------------------
// --------------------------------------------------------------------
// Get Node capacitances
// --------------------------------------------------------------------
double a_cap = getNet("A")->getTotalDownstreamCap();
double b_cap = getNet("B")->getTotalDownstreamCap();
double s0_cap = getNet("S0")->getTotalDownstreamCap();
double s0_b_cap = getNet("S0_b")->getTotalDownstreamCap();
double y_b_cap = getNet("Y_b")->getTotalDownstreamCap();
double y_cap = getNet("Y")->getTotalDownstreamCap();
cache->set(cell_name + "->Cap->A", a_cap);
cache->set(cell_name + "->Cap->B", b_cap);
cache->set(cell_name + "->Cap->S0", s0_cap);
cache->set(cell_name + "->Cap->S0_b", s0_b_cap);
cache->set(cell_name + "->Cap->Y_b", y_b_cap);
cache->set(cell_name + "->Cap->Y", y_cap);
Log::printLine(cell_name + "->Cap->A=" + (String) a_cap);
Log::printLine(cell_name + "->Cap->B=" + (String) b_cap);
Log::printLine(cell_name + "->Cap->S0=" + (String) s0_cap);
Log::printLine(cell_name + "->Cap->S0_b=" + (String) s0_b_cap);
Log::printLine(cell_name + "->Cap->Y_b=" + (String) y_b_cap);
Log::printLine(cell_name + "->Cap->Y=" + (String) y_cap);
// --------------------------------------------------------------------
// --------------------------------------------------------------------
// Build Internal Delay Model
// --------------------------------------------------------------------
// Build abstracted timing model
double y_ron = getDriver("INV2_RonZN")->getOutputRes();
double a_to_y_delay = 0.0;
a_to_y_delay += getDriver("INVZ1_RonZN")->calculateDelay();
a_to_y_delay += getDriver("INV2_RonZN")->calculateDelay();
double b_to_y_delay = 0.0;
b_to_y_delay += getDriver("INVZ1_RonZN")->calculateDelay();
b_to_y_delay += getDriver("INV2_RonZN")->calculateDelay();
double s0_to_y_delay = 0.0;
s0_to_y_delay += getDriver("INV1_RonZN")->calculateDelay();
s0_to_y_delay += max(getDriver("INVZ1_RonZN")->calculateDelay(), getDriver("INVZ1_RonZN")->calculateDelay());
s0_to_y_delay += getDriver("INV2_RonZN")->calculateDelay();
cache->set(cell_name + "->DriveRes->Y", y_ron);
cache->set(cell_name + "->Delay->A_to_Y", a_to_y_delay);
cache->set(cell_name + "->Delay->B_to_Y", b_to_y_delay);
cache->set(cell_name + "->Delay->S0_to_Y", s0_to_y_delay);
Log::printLine(cell_name + "->DriveRes->Y=" + (String) y_ron);
Log::printLine(cell_name + "->Delay->A_to_Y=" + (String) a_to_y_delay);
Log::printLine(cell_name + "->Delay->B_to_Y=" + (String) b_to_y_delay);
Log::printLine(cell_name + "->Delay->S0_to_Y=" + (String) s0_to_y_delay);
// --------------------------------------------------------------------
return;
}
} // namespace DSENT