LATQ.cc revision 10447
1#include "model/std_cells/LATQ.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/StdCellLib.h" 9#include "model/std_cells/CellMacros.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 using std::min; 20 21 LATQ::LATQ(const String& instance_name_, const TechModel* tech_model_) 22 : StdCell(instance_name_, tech_model_) 23 { 24 initProperties(); 25 } 26 27 LATQ::~LATQ() 28 {} 29 30 void LATQ::initProperties() 31 { 32 return; 33 } 34 35 void LATQ::constructModel() 36 { 37 // All constructModel should do is create Area/NDDPower/Energy Results as 38 // well as instantiate any sub-instances using only the hard parameters 39 40 createInputPort("D"); 41 createInputPort("G"); 42 createOutputPort("Q"); 43 44 createLoad("D_Cap"); 45 createLoad("G_Cap"); 46 createDelay("D_to_Q_delay"); 47 createDelay("G_to_Q_delay"); 48 createDriver("Q_Ron", true); 49 50 ElectricalLoad* d_cap = getLoad("D_Cap"); 51 ElectricalLoad* g_cap = getLoad("G_Cap"); 52 ElectricalDelay* d_to_q_delay = getDelay("D_to_Q_delay"); 53 ElectricalDelay* g_to_q_delay = getDelay("G_to_Q_delay"); 54 ElectricalDriver* q_ron = getDriver("Q_Ron"); 55 56 getNet("D")->addDownstreamNode(d_cap); 57 getNet("G")->addDownstreamNode(g_cap); 58 d_cap->addDownstreamNode(d_to_q_delay); 59 g_cap->addDownstreamNode(g_to_q_delay); 60 g_to_q_delay->addDownstreamNode(q_ron); 61 q_ron->addDownstreamNode(getNet("Q")); 62 63 // Create Area result 64 // Create NDD Power result 65 createElectricalAtomicResults(); 66 // Create G Event Energy Result 67 createElectricalEventAtomicResult("G"); 68 // Create DFF Event Energy Result 69 createElectricalEventAtomicResult("LATD"); 70 createElectricalEventAtomicResult("LATQ"); 71 // Create Idle event for leakage 72 // G pin is assumed to be on all the time 73 //createElectricalEventAtomicResult("Idle"); 74 getEventInfo("Idle")->setStaticTransitionInfos(); 75 return; 76 } 77 78 void LATQ::updateModel() 79 { 80 // Get parameters 81 double drive_strength = getDrivingStrength(); 82 Map<double>* cache = getTechModel()->getStdCellLib()->getStdCellCache(); 83 84 // Standard cell cache string 85 String cell_name = "LATQ_X" + (String) drive_strength; 86 87 // Get timing parameters 88 getLoad("D_Cap")->setLoadCap(cache->get(cell_name + "->Cap->D")); 89 getLoad("G_Cap")->setLoadCap(cache->get(cell_name + "->Cap->G")); 90 getDriver("Q_Ron")->setOutputRes(cache->get(cell_name + "->DriveRes->Q")); 91 getDelay("G_to_Q_delay")->setDelay(cache->get(cell_name + "->Delay->G_to_Q")); 92 getDelay("D_to_Q_delay")->setDelay(cache->get(cell_name + "->Delay->D_to_Q")); 93 94 // Set the cell area 95 getAreaResult("Active")->setValue(cache->get(cell_name + "->Area->Active")); 96 getAreaResult("Metal1Wire")->setValue(cache->get(cell_name + "->Area->Metal1Wire")); 97 98 return; 99 } 100 101 void LATQ::evaluateModel() 102 { 103 return; 104 } 105 106 void LATQ::useModel() 107 { 108 // Get parameters 109 double drive_strength = getDrivingStrength(); 110 Map<double>* cache = getTechModel()->getStdCellLib()->getStdCellCache(); 111 112 // Standard cell cache string 113 String cell_name = "LATQ_X" + (String) drive_strength; 114 115 // Propagate the transition info and get P_D, P_M, and P_Q 116 propagateTransitionInfo(); 117 double P_D = getInputPort("D")->getTransitionInfo().getProbability1(); 118 double P_G = getInputPort("G")->getTransitionInfo().getProbability1(); 119 double P_Q = getOutputPort("Q")->getTransitionInfo().getProbability1(); 120 double G_num_trans_01 = getInputPort("G")->getTransitionInfo().getNumberTransitions01(); 121 double D_num_trans_01 = getInputPort("D")->getTransitionInfo().getNumberTransitions01(); 122 double Q_num_trans_01 = getOutputPort("Q")->getTransitionInfo().getNumberTransitions01(); 123 124 // Calculate leakage 125 double leakage = 0; 126 leakage += cache->get(cell_name + "->Leakage->!D!G!Q") * (1 - P_D) * (1 - P_G) * (1 - P_Q); 127 leakage += cache->get(cell_name + "->Leakage->!D!GQ") * (1 - P_D) * (1 - P_G) * P_Q; 128 leakage += cache->get(cell_name + "->Leakage->!DG!Q") * (1 - P_D) * P_G * (1 - P_Q); 129 leakage += cache->get(cell_name + "->Leakage->D!G!Q") * P_D * (1 - P_G) * (1 - P_Q); 130 leakage += cache->get(cell_name + "->Leakage->D!GQ") * P_D * (1 - P_G) * P_Q; 131 leakage += cache->get(cell_name + "->Leakage->DGQ") * P_D * P_G * P_Q; 132 getNddPowerResult("Leakage")->setValue(leakage); 133 134 // Get VDD 135 double vdd = getTechModel()->get("Vdd"); 136 137 // Get capacitances 138 double g_b_cap = cache->get(cell_name + "->Cap->G_b"); 139 double d_b_cap = cache->get(cell_name + "->Cap->D_b"); 140 double q_i_cap = cache->get(cell_name + "->Cap->Q_i"); 141 double q_b_cap = cache->get(cell_name + "->Cap->Q_b"); 142 double q_cap = cache->get(cell_name + "->Cap->Q"); 143 double q_load_cap = getNet("Q")->getTotalDownstreamCap(); 144 145 // Calculate G Event energy 146 double g_event_energy = 0.0; 147 g_event_energy += (g_b_cap) * G_num_trans_01; 148 g_event_energy *= vdd * vdd; 149 getEventResult("G")->setValue(g_event_energy); 150 // Calculate LATD Event energy 151 double latd_event_energy = 0.0; 152 latd_event_energy += (d_b_cap) * D_num_trans_01; 153 latd_event_energy *= vdd * vdd; 154 getEventResult("LATD")->setValue(latd_event_energy); 155 // Calculate LATQ Event energy 156 double latq_event_energy = 0.0; 157 latq_event_energy += (q_i_cap + q_b_cap + q_cap + q_load_cap) * Q_num_trans_01; 158 latq_event_energy *= vdd * vdd; 159 getEventResult("LATQ")->setValue(latq_event_energy); 160 161 return; 162 } 163 164 void LATQ::propagateTransitionInfo() 165 { 166 const TransitionInfo& trans_G = getInputPort("G")->getTransitionInfo(); 167 const TransitionInfo& trans_D = getInputPort("D")->getTransitionInfo(); 168 169 double G_num_trans_01 = trans_G.getNumberTransitions01(); 170 double G_num_trans_10 = G_num_trans_01; 171 double G_num_trans_00 = trans_G.getNumberTransitions00(); 172 double D_freq_mult = trans_D.getFrequencyMultiplier(); 173 174 // If the latch is sampling just as fast or faster than input data signal 175 // Then it can capture all transitions (though it should be normalized to clock) 176 if((G_num_trans_10 + G_num_trans_00) >= D_freq_mult) 177 { 178 const TransitionInfo& trans_Q = trans_D.scaleFrequencyMultiplier(G_num_trans_10 + G_num_trans_00); 179 getOutputPort("Q")->setTransitionInfo(trans_Q); 180 } 181 // If the latch is sampling slower than the input data signal, then input 182 // will look like they transition more 183 else 184 { 185 // Calculate scale ratio 186 double scale_ratio = (G_num_trans_10 + G_num_trans_00) / D_freq_mult; 187 // 00 and 11 transitions become fewer 188 double D_scaled_diff = 0.5 * (1 - scale_ratio) * (trans_D.getNumberTransitions00() + trans_D.getNumberTransitions11()); 189 double D_scaled_num_trans_00 = trans_D.getNumberTransitions00() * scale_ratio; 190 double D_scaled_num_trans_11 = trans_D.getNumberTransitions11() * scale_ratio; 191 // 01 and 10 transitions become more frequent 192 double D_scaled_num_trans_10 = trans_D.getNumberTransitions01() + D_scaled_diff; 193 194 // Create final transition info, remembering to apply scaling ratio to normalize to G 195 const TransitionInfo trans_Q( D_scaled_num_trans_00 * scale_ratio, 196 D_scaled_num_trans_10 * scale_ratio, 197 D_scaled_num_trans_11 * scale_ratio); 198 getOutputPort("Q")->setTransitionInfo(trans_Q); 199 } 200 201 return; 202 } 203 204 // Creates the standard cell, characterizes and abstracts away the details 205 void LATQ::cacheStdCell(StdCellLib* cell_lib_, double drive_strength_) 206 { 207 // Get parameters 208 double gate_pitch = cell_lib_->getTechModel()->get("Gate->PitchContacted"); 209 Map<double>* cache = cell_lib_->getStdCellCache(); 210 211 // Standard cell cache string 212 String cell_name = "LATQ_X" + (String) drive_strength_; 213 214 Log::printLine("=== " + cell_name + " ==="); 215 216 217 // Now actually build the full standard cell model 218 createInputPort("D"); 219 createInputPort("G"); 220 createOutputPort("Q"); 221 222 createNet("D_b"); 223 createNet("Q_i"); 224 createNet("Q_b"); 225 createNet("G_b"); 226 227 // Adds macros 228 CellMacros::addInverter(this, "INV1", false, true, "D", "D_b"); 229 CellMacros::addInverter(this, "INV2", false, true, "Q_i", "Q_b"); 230 CellMacros::addInverter(this, "INV3", false, true, "Q_b", "Q"); 231 CellMacros::addInverter(this, "INV4", false, true, "G", "G_b"); 232 CellMacros::addTristate(this, "INVZ1", false, true, false, false, "D_b", "G", "G_b", "Q_i"); //trace timing through A->ZN path only 233 CellMacros::addTristate(this, "INVZ2", false, false, false, false, "Q_b", "G_b", "G", "Q_i"); //don't trace timing through the feedback path 234 235 // Update macros 236 CellMacros::updateInverter(this, "INV1", drive_strength_ * 0.125); 237 CellMacros::updateInverter(this, "INV2", drive_strength_ * 0.5); 238 CellMacros::updateInverter(this, "INV3", drive_strength_ * 1.0); 239 CellMacros::updateInverter(this, "INV4", drive_strength_ * 0.125); 240 CellMacros::updateTristate(this, "INVZ1", drive_strength_ * 0.5); 241 CellMacros::updateTristate(this, "INVZ2", drive_strength_ * 0.0625); 242 243 // Cache area result 244 double area = 0.0; 245 area += gate_pitch * getTotalHeight() * 1; 246 area += gate_pitch * getTotalHeight() * getGenProperties()->get("INV1_GatePitches").toDouble(); 247 area += gate_pitch * getTotalHeight() * getGenProperties()->get("INV2_GatePitches").toDouble(); 248 area += gate_pitch * getTotalHeight() * getGenProperties()->get("INV3_GatePitches").toDouble(); 249 area += gate_pitch * getTotalHeight() * getGenProperties()->get("INV4_GatePitches").toDouble(); 250 area += gate_pitch * getTotalHeight() * getGenProperties()->get("INVZ1_GatePitches").toDouble(); 251 area += gate_pitch * getTotalHeight() * getGenProperties()->get("INVZ2_GatePitches").toDouble(); 252 cache->set(cell_name + "->Area->Active", area); 253 cache->set(cell_name + "->Area->Metal1Wire", area); //Cover-block m1 area 254 Log::printLine(cell_name + "->Area->Active=" + (String) area); 255 Log::printLine(cell_name + "->Area->Metal1Wire=" + (String) area); 256 257 // -------------------------------------------------------------------- 258 // Leakage Model Calculation 259 // -------------------------------------------------------------------- 260 // Cache leakage power results (for every single signal combination) 261 double leakage_000 = 0; //!D, !G, !Q 262 double leakage_001 = 0; //!D, !G, Q 263 double leakage_010 = 0; //!D, G, !Q 264 double leakage_100 = 0; //D, !G, !Q 265 double leakage_101 = 0; //D, !G, Q 266 double leakage_111 = 0; //D, G, Q 267 268 //This is so painful... 269 leakage_000 += getGenProperties()->get("INV1_LeakagePower_0").toDouble(); 270 leakage_000 += getGenProperties()->get("INV2_LeakagePower_0").toDouble(); 271 leakage_000 += getGenProperties()->get("INV3_LeakagePower_1").toDouble(); 272 leakage_000 += getGenProperties()->get("INV4_LeakagePower_0").toDouble(); 273 leakage_000 += getGenProperties()->get("INVZ1_LeakagePower_011_0").toDouble(); 274 leakage_000 += getGenProperties()->get("INVZ2_LeakagePower_101_0").toDouble(); 275 276 leakage_001 += getGenProperties()->get("INV1_LeakagePower_0").toDouble(); 277 leakage_001 += getGenProperties()->get("INV2_LeakagePower_0").toDouble(); 278 leakage_001 += getGenProperties()->get("INV3_LeakagePower_0").toDouble(); 279 leakage_001 += getGenProperties()->get("INV4_LeakagePower_0").toDouble(); 280 leakage_001 += getGenProperties()->get("INVZ1_LeakagePower_011_1").toDouble(); 281 leakage_001 += getGenProperties()->get("INVZ2_LeakagePower_100_1").toDouble(); 282 283 leakage_010 += getGenProperties()->get("INV1_LeakagePower_0").toDouble(); 284 leakage_010 += getGenProperties()->get("INV2_LeakagePower_0").toDouble(); 285 leakage_010 += getGenProperties()->get("INV3_LeakagePower_1").toDouble(); 286 leakage_010 += getGenProperties()->get("INV4_LeakagePower_1").toDouble(); 287 leakage_010 += getGenProperties()->get("INVZ1_LeakagePower_101_0").toDouble(); 288 leakage_010 += getGenProperties()->get("INVZ2_LeakagePower_011_0").toDouble(); 289 290 leakage_100 += getGenProperties()->get("INV1_LeakagePower_1").toDouble(); 291 leakage_100 += getGenProperties()->get("INV2_LeakagePower_1").toDouble(); 292 leakage_100 += getGenProperties()->get("INV3_LeakagePower_1").toDouble(); 293 leakage_100 += getGenProperties()->get("INV4_LeakagePower_0").toDouble(); 294 leakage_100 += getGenProperties()->get("INVZ1_LeakagePower_010_0").toDouble(); 295 leakage_100 += getGenProperties()->get("INVZ2_LeakagePower_101_0").toDouble(); 296 297 leakage_101 += getGenProperties()->get("INV1_LeakagePower_1").toDouble(); 298 leakage_101 += getGenProperties()->get("INV2_LeakagePower_1").toDouble(); 299 leakage_101 += getGenProperties()->get("INV3_LeakagePower_0").toDouble(); 300 leakage_101 += getGenProperties()->get("INV4_LeakagePower_0").toDouble(); 301 leakage_101 += getGenProperties()->get("INVZ1_LeakagePower_010_1").toDouble(); 302 leakage_101 += getGenProperties()->get("INVZ2_LeakagePower_100_1").toDouble(); 303 304 leakage_111 += getGenProperties()->get("INV1_LeakagePower_1").toDouble(); 305 leakage_111 += getGenProperties()->get("INV2_LeakagePower_1").toDouble(); 306 leakage_111 += getGenProperties()->get("INV3_LeakagePower_0").toDouble(); 307 leakage_111 += getGenProperties()->get("INV4_LeakagePower_1").toDouble(); 308 leakage_111 += getGenProperties()->get("INVZ1_LeakagePower_100_1").toDouble(); 309 leakage_111 += getGenProperties()->get("INVZ2_LeakagePower_010_1").toDouble(); 310 311 cache->set(cell_name + "->Leakage->!D!G!Q", leakage_000); 312 cache->set(cell_name + "->Leakage->!D!GQ", leakage_001); 313 cache->set(cell_name + "->Leakage->!DG!Q", leakage_010); 314 cache->set(cell_name + "->Leakage->D!G!Q", leakage_100); 315 cache->set(cell_name + "->Leakage->D!GQ", leakage_101); 316 cache->set(cell_name + "->Leakage->DGQ", leakage_111); 317 Log::printLine(cell_name + "->Leakage->!D!G!Q=" + (String) leakage_000); 318 Log::printLine(cell_name + "->Leakage->!D!GQ=" + (String) leakage_001); 319 Log::printLine(cell_name + "->Leakage->!DG!Q=" + (String) leakage_010); 320 Log::printLine(cell_name + "->Leakage->D!G!Q=" + (String) leakage_100); 321 Log::printLine(cell_name + "->Leakage->D!GQ=" + (String) leakage_101); 322 Log::printLine(cell_name + "->Leakage->DGQ=" + (String) leakage_111); 323 // -------------------------------------------------------------------- 324 325 // -------------------------------------------------------------------- 326 // Get Node Capacitances 327 // -------------------------------------------------------------------- 328 double d_cap = getNet("D")->getTotalDownstreamCap(); 329 double d_b_cap = getNet("D_b")->getTotalDownstreamCap(); 330 double q_i_cap = getNet("Q_i")->getTotalDownstreamCap(); 331 double q_b_cap = getNet("Q_b")->getTotalDownstreamCap(); 332 double q_cap = getNet("Q")->getTotalDownstreamCap(); 333 double g_cap = getNet("G")->getTotalDownstreamCap(); 334 double g_b_cap = getNet("G_b")->getTotalDownstreamCap(); 335 336 cache->set(cell_name + "->Cap->D", d_cap); 337 cache->set(cell_name + "->Cap->D_b", d_b_cap); 338 cache->set(cell_name + "->Cap->Q_i", q_i_cap); 339 cache->set(cell_name + "->Cap->Q_b", q_b_cap); 340 cache->set(cell_name + "->Cap->Q", q_cap); 341 cache->set(cell_name + "->Cap->G", g_cap); 342 cache->set(cell_name + "->Cap->G_b", g_b_cap); 343 344 Log::printLine(cell_name + "->Cap->D=" + (String) d_cap); 345 Log::printLine(cell_name + "->Cap->D_b=" + (String) d_b_cap); 346 Log::printLine(cell_name + "->Cap->Q_i=" + (String) q_i_cap); 347 Log::printLine(cell_name + "->Cap->Q_b=" + (String) q_b_cap); 348 Log::printLine(cell_name + "->Cap->Q=" + (String) q_cap); 349 Log::printLine(cell_name + "->Cap->G=" + (String) g_cap); 350 Log::printLine(cell_name + "->Cap->G_b=" + (String) g_b_cap); 351 // -------------------------------------------------------------------- 352 353 // -------------------------------------------------------------------- 354 // Build Internal Delay Model 355 // -------------------------------------------------------------------- 356 double q_ron = getDriver("INV3_RonZN")->getOutputRes(); 357 358 double d_to_q_delay = getDriver("INV1_RonZN")->calculateDelay() + 359 getDriver("INVZ1_RonZN")->calculateDelay() + 360 getDriver("INV2_RonZN")->calculateDelay() + 361 getDriver("INV3_RonZN")->calculateDelay(); 362 double g_to_q_delay = getDriver("INV4_RonZN")->calculateDelay() + 363 getDriver("INVZ1_RonZN")->calculateDelay() + 364 getDriver("INV2_RonZN")->calculateDelay() + 365 getDriver("INV3_RonZN")->calculateDelay(); 366 367 cache->set(cell_name + "->DriveRes->Q", q_ron); 368 cache->set(cell_name + "->Delay->D_to_Q", d_to_q_delay); 369 cache->set(cell_name + "->Delay->G_to_Q", g_to_q_delay); 370 Log::printLine(cell_name + "->DriveRes->Q=" + (String) q_ron); 371 Log::printLine(cell_name + "->Delay->D_to_Q=" + (String) d_to_q_delay); 372 Log::printLine(cell_name + "->Delay->G_to_Q=" + (String) g_to_q_delay); 373 374 return; 375 // -------------------------------------------------------------------- 376 377 } 378 379} // namespace DSENT 380 381