INV.cc revision 10447 
1#include "model/std_cells/INV.h"
2
3#include <cmath>
4
5#include "model/PortInfo.h"
6#include "model/TransitionInfo.h"
7#include "model/EventInfo.h"
8#include "model/std_cells/CellMacros.h"
9#include "model/std_cells/StdCellLib.h"
10#include "model/timing_graph/ElectricalNet.h"
11#include "model/timing_graph/ElectricalDriver.h"
12#include "model/timing_graph/ElectricalLoad.h"
13#include "model/timing_graph/ElectricalDelay.h"
14
15namespace DSENT
16{
17    using std::ceil;
18    using std::max;
19
20    INV::INV(const String& instance_name_, const TechModel* tech_model_)
21        : StdCell(instance_name_, tech_model_)
22    {
23        initProperties();
24    }
25
26    INV::~INV()
27    {}
28
29    void INV::initProperties()
30    {
31        return;
32    }
33
34    void INV::constructModel()
35    {
36        // All constructModel should do is create Area/NDDPower/Energy Results as
37        // well as instantiate any sub-instances using only the hard parameters
38
39        // Build Electrical Connectivity
40        createInputPort("A");
41        createOutputPort("Y");
42
43        createLoad("A_Cap");
44        createDelay("A_to_Y_delay");
45        createDriver("Y_Ron", true);
46
47        ElectricalLoad* a_cap = getLoad("A_Cap");
48        ElectricalDelay* a_to_y_delay = getDelay("A_to_Y_delay");
49        ElectricalDriver* y_ron = getDriver("Y_Ron");
50
51        getNet("A")->addDownstreamNode(a_cap);
52        a_cap->addDownstreamNode(a_to_y_delay);
53        a_to_y_delay->addDownstreamNode(y_ron);
54        y_ron->addDownstreamNode(getNet("Y"));
55
56        // Create Area result
57        // Create NDD Power result
58        createElectricalAtomicResults();
59        // Create INV Event Energy Result
60        createElectricalEventAtomicResult("INV");
61
62        getEventInfo("Idle")->setStaticTransitionInfos();
63
64        return;
65    }
66
67    void INV::updateModel()
68    {
69        // All updateModel should do is calculate numbers for the Area/NDDPower/Energy
70        // Results as anything else that needs to be done using either soft or hard parameters
71
72        // Get parameters
73        double drive_strength = getDrivingStrength();
74        Map<double>* cache = getTechModel()->getStdCellLib()->getStdCellCache();
75
76        // Standard cell cache string
77        String cell_name = "INV_X" + (String) drive_strength;
78
79        // Get timing parameters
80        getLoad("A_Cap")->setLoadCap(cache->get(cell_name + "->Cap->A"));
81        getDriver("Y_Ron")->setOutputRes(cache->get(cell_name + "->DriveRes->Y"));
82        getDelay("A_to_Y_delay")->setDelay(cache->get(cell_name + "->Delay->A_to_Y"));
83
84        // Set the cell area
85        getAreaResult("Active")->setValue(cache->get(cell_name + "->Area->Active"));
86        getAreaResult("Metal1Wire")->setValue(cache->get(cell_name + "->Area->Metal1Wire"));
87
88        return;
89    }
90
91    void INV::evaluateModel()
92    {
93        return;
94    }
95
96    void INV::useModel()
97    {
98        // Get parameters
99        double drive_strength = getDrivingStrength();
100        Map<double>* cache = getTechModel()->getStdCellLib()->getStdCellCache();
101
102        // Standard cell cache string
103        String cell_name = "INV_X" + (String) drive_strength;
104
105        // Propagate the transition info and get the 0->1 transtion count
106        propagateTransitionInfo();
107        double P_A = getInputPort("A")->getTransitionInfo().getProbability1();
108        double Y_num_trans_01 = getOutputPort("Y")->getTransitionInfo().getNumberTransitions01();
109
110        // Calculate leakage
111        double leakage = 0;
112        leakage += cache->get(cell_name + "->Leakage->!A") * (1 - P_A);
113        leakage += cache->get(cell_name + "->Leakage->A") * P_A;
114        getNddPowerResult("Leakage")->setValue(leakage);
115
116        // Get VDD
117        double vdd = getTechModel()->get("Vdd");
118
119        // Get capacitances
120        //double a_cap = cache->get(cell_name + "->Cap->A");
121        double y_cap = cache->get(cell_name + "->Cap->Y");
122        double y_load_cap = getNet("Y")->getTotalDownstreamCap();
123
124        // Calculate INV Event energy
125        double energy_per_trans_01 = (y_cap + y_load_cap) * vdd * vdd;
126        getEventResult("INV")->setValue(energy_per_trans_01 * Y_num_trans_01);
127        return;
128    }
129
130    void INV::propagateTransitionInfo()
131    {
132        // Get input transition info
133        const TransitionInfo& trans_A = getInputPort("A")->getTransitionInfo();
134
135        // Set output transition info
136        double Y_num_trans_00 = trans_A.getNumberTransitions11();
137        double Y_num_trans_01 = trans_A.getNumberTransitions01();
138        double Y_num_trans_11 = trans_A.getNumberTransitions00();
139
140        TransitionInfo trans_Y(Y_num_trans_00, Y_num_trans_01, Y_num_trans_11);
141        getOutputPort("Y")->setTransitionInfo(trans_Y);
142        return;
143    }
144
145    // Creates the standard cell, characterizes and abstracts away the details
146    void INV::cacheStdCell(StdCellLib* cell_lib_, double drive_strength_)
147    {
148        // Standard cell cache string
149        String cell_name = "INV_X" + (String) drive_strength_;
150
151        Log::printLine("=== " + cell_name + " ===");
152
153        // Get parameters
154        double gate_pitch = cell_lib_->getTechModel()->get("Gate->PitchContacted");
155        Map<double>* cache = cell_lib_->getStdCellCache();
156
157        // Now actually build the full standard cell model
158        // Create the two input ports
159        createInputPort("A");
160        createOutputPort("Y");
161
162        // Adds macros
163        CellMacros::addInverter(this, "INV", true, true, "A", "Y");
164        CellMacros::updateInverter(this, "INV", drive_strength_);
165
166        // Cache area result
167        double area = gate_pitch * getTotalHeight() * (1 + getGenProperties()->get("INV_GatePitches").toDouble());
168        cache->set(cell_name + "->Area->Active", area);
169        cache->set(cell_name + "->Area->Metal1Wire", area);
170        Log::printLine(cell_name + "->Area->Active=" + (String) area);
171        Log::printLine(cell_name + "->Area->Metal1Wire=" + (String) area);
172
173        // --------------------------------------------------------------------
174        // Leakage Model Calculation
175        // --------------------------------------------------------------------
176        double leakage_a0 = getGenProperties()->get("INV_LeakagePower_0").toDouble();
177        double leakage_a1 = getGenProperties()->get("INV_LeakagePower_1").toDouble();
178        cache->set(cell_name + "->Leakage->!A", leakage_a0);
179        cache->set(cell_name + "->Leakage->A", leakage_a1);
180        Log::printLine(cell_name + "->Leakage->!A=" + (String) leakage_a0);
181        Log::printLine(cell_name + "->Leakage->A=" + (String) leakage_a1);
182        // --------------------------------------------------------------------
183
184        /*
185        // Cache event energy results
186        double event_a_flip = getGenProperties()->get("INV_A_Flip").toDouble() + getGenProperties()->get("INV_ZN_Flip").toDouble();
187        cache->set(cell_name + "->Event_A_Flip", event_a_flip);
188        Log::printLine(cell_name + "->Event_A_Flip=" + (String) event_a_flip);
189        */
190
191        // --------------------------------------------------------------------
192        // Get Node Capacitances
193        // --------------------------------------------------------------------
194        double a_cap = getNet("A")->getTotalDownstreamCap();
195        double y_cap = getNet("Y")->getTotalDownstreamCap();
196
197        cache->set(cell_name + "->Cap->A", a_cap);
198        cache->set(cell_name + "->Cap->Y", y_cap);
199        Log::printLine(cell_name + "->Cap->A=" + (String) a_cap);
200        Log::printLine(cell_name + "->Cap->Y=" + (String) y_cap);
201        // --------------------------------------------------------------------
202
203        // --------------------------------------------------------------------
204        // Build Internal Delay Model
205        // --------------------------------------------------------------------
206        double y_ron = getDriver("INV_RonZN")->getOutputRes();
207        double a_to_y_delay = getDriver("INV_RonZN")->calculateDelay();
208        cache->set(cell_name + "->DriveRes->Y", y_ron);
209        cache->set(cell_name + "->Delay->A_to_Y", a_to_y_delay);
210        Log::printLine(cell_name + "->DriveRes->Y=" + (String) y_ron);
211        Log::printLine(cell_name + "->Delay->A_to_Y=" + (String) a_to_y_delay);
212        // --------------------------------------------------------------------
213
214        return;
215
216    }
217
218} // namespace DSENT
219
220