From e8ed7b1d1b5bef31e9874f679a5797c2e00d06f1 Mon Sep 17 00:00:00 2001
From: Nilay Vaish <nilay@cs.wisc.edu>
Date: Sat, 11 Oct 2014 15:02:23 -0500
Subject: ext: add the source code for DSENT This patch adds a tool called
 DSENT to the ext/ directory.  DSENT is a tool that models power and area for
 on-chip networks.  The next patch adds a script for using the tool.

---
 ext/dsent/model/timing_graph/ElectricalDriver.cc | 95 ++++++++++++++++++++++++
 1 file changed, 95 insertions(+)
 create mode 100644 ext/dsent/model/timing_graph/ElectricalDriver.cc

(limited to 'ext/dsent/model/timing_graph/ElectricalDriver.cc')

diff --git a/ext/dsent/model/timing_graph/ElectricalDriver.cc b/ext/dsent/model/timing_graph/ElectricalDriver.cc
new file mode 100644
index 000000000..9456ef067
--- /dev/null
+++ b/ext/dsent/model/timing_graph/ElectricalDriver.cc
@@ -0,0 +1,95 @@
+
+#include "model/timing_graph/ElectricalDriver.h"
+#include "model/timing_graph/ElectricalNet.h"
+#include "model/ElectricalModel.h"
+
+namespace DSENT
+{
+    ElectricalDriver::ElectricalDriver(const String& instance_name_, ElectricalModel* model_, bool sizable_)
+        : ElectricalTimingNode(instance_name_, model_), m_output_res_(0.0), m_sizable_(sizable_)
+    {
+
+    }
+
+    ElectricalDriver::~ElectricalDriver()
+    {
+
+    }
+    
+    void ElectricalDriver::setOutputRes(double output_res_)
+    {
+        m_output_res_ = output_res_;
+        return;
+    }
+
+    double ElectricalDriver::getOutputRes() const
+    {        
+        return m_output_res_;
+    }
+
+    double ElectricalDriver::calculateDelay() const
+    {
+        return 0.693 * m_output_res_ * getTotalDownstreamCap();
+    }    
+
+    double ElectricalDriver::calculateTransition() const
+    {
+        return 1.386 * getMaxUpstreamRes() * getTotalDownstreamCap();
+    }
+
+    double ElectricalDriver::getMaxUpstreamRes() const
+    {
+        return m_output_res_;
+    }
+
+    bool ElectricalDriver::isSizable() const
+    {
+        return m_sizable_;
+    }
+    
+    bool ElectricalDriver::hasMaxDrivingStrength() const
+    {
+        if (!isSizable())
+        {
+            return true;
+        }
+        return (getModel() == NULL) || (getModel()->hasMaxDrivingStrength());
+    }
+
+    bool ElectricalDriver::hasMinDrivingStrength() const
+    {
+        if (!isSizable())
+        {
+            return true;
+        }
+        return (getModel() == NULL) || (getModel()->hasMinDrivingStrength());
+    }
+    
+    void ElectricalDriver::increaseDrivingStrength()
+    {
+        ASSERT(isSizable(), "[Error] " + getInstanceName() + 
+            " -> Attempted to size up unsizable driver!");
+        if(!hasMaxDrivingStrength())
+        {
+            getModel()->increaseDrivingStrength();
+        }
+        return;
+    }
+
+    void ElectricalDriver::decreaseDrivingStrength()
+    {
+        ASSERT(isSizable(), "[Error] " + getInstanceName() + 
+            " -> Attempted to size down unsizable driver!");
+        if(!hasMinDrivingStrength())
+        {
+            getModel()->decreaseDrivingStrength();
+        }
+        return;
+    }
+    
+    bool ElectricalDriver::isDriver() const
+    {
+        return true;
+    }    
+} // namespace DSENT
+
-- 
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