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, 54 insertions, 0 deletions

diff --git a/ext/dsent/model/electrical/BroadcastHTree.h b/ext/dsent/model/electrical/BroadcastHTree.h
new file mode 100644
index 000000000..f2c8d407b
--- /dev/null
+++ b/ext/dsent/model/electrical/BroadcastHTree.h
@@ -0,0 +1,54 @@
+#ifndef __DSENT_MODEL_ELECTRICAL_BROADCAST_HTREE_H__
+#define __DSENT_MODEL_ELECTRICAL_BROADCAST_HTREE_H__
+
+#include "util/CommonType.h"
+#include "model/ElectricalModel.h"
+
+#include <vector>
+
+namespace DSENT
+{
+    using std::vector;
+
+    class StdCell;
+    class ElectricalLoad;
+    class ElectricalTimingTree;
+
+    class BroadcastHTree : public ElectricalModel
+    {
+        public:
+            BroadcastHTree(const String& instance_name_, const TechModel* tech_model_);
+            virtual ~BroadcastHTree();
+
+        public:
+            // Set a list of properties' name needed to construct model
+            void initParameters();
+            // Set a list of properties' name needed to construct model
+            void initProperties();
+
+            // Clone and return a new instance
+            virtual BroadcastHTree* clone() const;
+
+        protected:
+            // Build the model
+            virtual void constructModel();
+            virtual void updateModel();
+            virtual void useModel();
+            virtual void propagateTransitionInfo();
+
+        private:
+            vector<StdCell*> m_repeaters_;
+            vector<ElectricalLoad*> m_repeater_loads_;
+            vector<ElectricalTimingTree*> m_timing_trees_;
+            vector<unsigned int> m_number_segments_;
+
+            vector<StdCell*> m_leaf_drivers_;
+            ElectricalLoad* m_leaf_load_;
+            StdCell* m_leaf_head_driver_;
+            ElectricalLoad* m_leaf_head_load_;
+
+    }; // class BroadcastHTree
+} // namespace DSENT
+
+#endif // __DSENT_MODEL_ELECTRICAL_BROADCAST_HTREE_H__
+