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, 71 insertions, 0 deletions

diff --git a/ext/dsent/model/std_cells/StdCell.cc b/ext/dsent/model/std_cells/StdCell.cc
new file mode 100644
index 000000000..bc95f97c3
--- /dev/null
+++ b/ext/dsent/model/std_cells/StdCell.cc
@@ -0,0 +1,71 @@
+#include "model/std_cells/StdCell.h"
+
+#include "model/timing_graph/ElectricalNet.h"
+#include "model/timing_graph/ElectricalDriver.h"
+#include "model/timing_graph/ElectricalLoad.h"
+
+#include <cmath>
+#include <algorithm>
+
+namespace DSENT
+{
+    StdCell::StdCell(const String& instance_name_, const TechModel* tech_model_)
+        : ElectricalModel(instance_name_, tech_model_)
+    {
+        initParameters();
+        initProperties();
+    }
+
+    StdCell::~StdCell()
+    {
+
+    }
+    
+    
+    void StdCell::initParameters()
+    {
+        addParameterName("AvailableDrivingStrengths");
+        return;
+    }
+    
+    void StdCell::initProperties()
+    {
+        addPropertyName("DrivingStrength");
+        return;
+    }
+
+    // Get PMOS to NMOS ratio
+    double StdCell::getPToNRatio() const
+    {
+        return m_p_to_n_ratio_;
+    }
+    
+    void StdCell::setPToNRatio(double p_to_n_ratio_)
+    {
+        m_p_to_n_ratio_ = p_to_n_ratio_;
+    }
+    
+    // Get height of the standard cell taken by active transistors
+    double StdCell::getActiveHeight() const
+    {
+        return m_active_height_;
+    }
+    
+    void StdCell::setActiveHeight(double active_height_)
+    {
+        m_active_height_ = active_height_;
+    }
+    
+    // Get total height of the standard cell including overheads
+    double StdCell::getTotalHeight() const
+    {
+        return m_total_height_;
+    }
+
+    void StdCell::setTotalHeight(double total_height_)
+    {
+        m_total_height_ = total_height_;
+    }
+
+} // namespace DSENT
+