ext/dsent/model/timing_graph/ElectricalTimingOptimizer.cc

   1 /* Copyright (c) 2012 Massachusetts Institute of Technology
   2  *
   3  * Permission is hereby granted, free of charge, to any person obtaining a copy
   4  * of this software and associated documentation files (the "Software"), to deal
   5  * in the Software without restriction, including without limitation the rights
   6  * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
   7  * copies of the Software, and to permit persons to whom the Software is
   8  * furnished to do so, subject to the following conditions:
   9  *
  10  * The above copyright notice and this permission notice shall be included in
  11  * all copies or substantial portions of the Software.
  12  *
  13  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  14  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  15  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
  16  * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  17  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
  18  * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
  19  * THE SOFTWARE.
  20  */
  21
  22 #include "model/timing_graph/ElectricalTimingOptimizer.h"
  23
  24 #include "model/PortInfo.h"
  25 #include "model/ModelGen.h"
  26 #include "model/std_cells/StdCell.h"
  27 #include "model/std_cells/StdCellLib.h"
  28 #include "model/timing_graph/ElectricalNet.h"
  29 #include "model/timing_graph/ElectricalTimingTree.h"
  30
  31 namespace DSENT
  32 {
  33     ElectricalTimingOptimizer::ElectricalTimingOptimizer(const String& instance_name_, const TechModel* tech_model_)
  34         : ElectricalModel(instance_name_, tech_model_), m_model_(NULL)
  35     {}
  36
  37     ElectricalTimingOptimizer::~ElectricalTimingOptimizer()
  38     {}
  39
  40     void ElectricalTimingOptimizer::setModel(ElectricalModel* model_)
  41     {
  42         m_model_ = model_;
  43         return;
  44     }
  45
  46     ElectricalModel* ElectricalTimingOptimizer::getModel()
  47     {
  48         return m_model_;
  49     }
  50
  51     void ElectricalTimingOptimizer::constructModel()
  52     {
  53         if(getModel() == NULL)
  54         {
  55             return;
  56         }
  57
  58         const Map<PortInfo*>* port_info = getModel()->getInputs();
  59         Map<PortInfo*>::ConstIterator it_begin = port_info->begin();
  60         Map<PortInfo*>::ConstIterator it_end = port_info->end();
  61         Map<PortInfo*>::ConstIterator it;
  62
  63         for(it = it_begin; it != it_end; ++it)
  64         {
  65             const String& port_name = it->first;
  66             const PortInfo* port_info = it->second;
  67             StdCell* inv0 = getTechModel()->getStdCellLib()->createStdCell("INV", port_name + "Driver0");
  68             inv0->construct();
  69             StdCell* inv1 = getTechModel()->getStdCellLib()->createStdCell("INV", port_name + "Driver1");
  70             inv1->construct();
  71
  72             addSubInstances(inv0, 1.0);
  73             addSubInstances(inv1, 1.0);
  74
  75             createInputPort(port_name, port_info->getNetIndex());
  76             createNet(port_name + "Driver0In");
  77             createNet(port_name + "Driver0Out");
  78             createNet(port_name + "Driver1Out");
  79             assignVirtualFanin(port_name + "Driver0In", port_name);
  80             portConnect(inv0, "A", port_name + "Driver0In");
  81             portConnect(inv0, "Y", port_name + "Driver0Out");
  82             portConnect(inv1, "A", port_name + "Driver0Out");
  83             portConnect(inv1, "Y", port_name + "Driver1Out");
  84
  85             createNet(port_name + "In", port_info->getNetIndex());
  86             assignVirtualFanout(port_name + "In", port_name + "Driver1Out");
  87
  88             portConnect(getModel(), port_name, port_name + "In");
  89         }
  90
  91         return;
  92     }
  93 }// namespace DSENT
  94