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.

1 files changed, 55 insertions, 0 deletions

diff --git a/ext/dsent/model/timing_graph/ElectricalDelay.cc b/ext/dsent/model/timing_graph/ElectricalDelay.cc
new file mode 100644
index 000000000..e87a77be9
--- /dev/null
+++ b/ext/dsent/model/timing_graph/ElectricalDelay.cc
@@ -0,0 +1,55 @@
+
+#include "model/timing_graph/ElectricalDelay.h"
+#include "model/timing_graph/ElectricalLoad.h"
+
+namespace DSENT
+{
+    //-------------------------------------------------------------------------
+    // Electrical Delay
+    //-------------------------------------------------------------------------
+
+    ElectricalDelay::ElectricalDelay(const String& instance_name_, ElectricalModel* model_)
+        : ElectricalTimingNode(instance_name_, model_), m_delay_(0.0)
+    {
+
+    }
+
+    ElectricalDelay::~ElectricalDelay()
+    {
+
+    }
+
+    void ElectricalDelay::setDelay(double delay_)
+    {
+        m_delay_ = delay_;
+        return;
+    }
+
+    double ElectricalDelay::getDelay() const
+    {
+        return m_delay_;
+    }
+    
+    double ElectricalDelay::calculateDelay() const
+    {
+        return m_delay_;
+    }
+
+    double ElectricalDelay::calculateTransition() const
+    {
+        return 1.386 * getMaxUpstreamRes() * getTotalDownstreamCap();
+    }
+
+    double ElectricalDelay::getMaxUpstreamRes() const
+    {
+        return ElectricalTimingNode::getMaxUpstreamRes();
+    }
+    
+    double ElectricalDelay::getTotalDownstreamCap() const
+    {
+        return ElectricalTimingNode::getTotalDownstreamCap();
+    }
+    
+} // namespace DSENT
+
+