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/optical/RingModulator.h | 54 +++++++++++++++++++++++++++++++++
 1 file changed, 54 insertions(+)
 create mode 100644 ext/dsent/model/optical/RingModulator.h

(limited to 'ext/dsent/model/optical/RingModulator.h')

diff --git a/ext/dsent/model/optical/RingModulator.h b/ext/dsent/model/optical/RingModulator.h
new file mode 100644
index 000000000..bbfa7f4ee
--- /dev/null
+++ b/ext/dsent/model/optical/RingModulator.h
@@ -0,0 +1,54 @@
+#ifndef __DSENT_MODEL_OPTICAL_RINGMODULATOR_H__
+#define __DSENT_MODEL_OPTICAL_RINGMODULATOR_H__
+
+#include "util/CommonType.h"
+#include "model/OpticalModel.h"
+#include "model/optical_graph/OpticalTransmitter.h"
+
+namespace DSENT
+{
+    class RingModulator : public OpticalModel, public OpticalTransmitter
+    {
+        public:
+            RingModulator(const String& instance_name_, const TechModel* tech_model_);
+            virtual ~RingModulator();
+
+        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();
+            // Set the transmitter specifications, returns whether it is possible
+            // to build a modulator that met those specs
+            bool setTransmitterSpec(double IL_dB_, double ER_dB_);
+            // Returns power of the transmitter at a given utilization
+            double getPower(double util_) const;
+        
+        private:
+            // Precompute values based on tech parameters
+            void precomputeTech();
+            // Design ring modulator driver
+            bool designModulator(double IL_dB_, double ER_dB_);
+            // Calculate modulator energy
+            double calcModulatorEnergy() const;
+            
+        protected:
+            // Build the model
+            virtual void constructModel();
+            virtual void updateModel();
+            virtual void useModel();
+            virtual void propagateTransitionInfo();
+
+        private:
+            // Some precomputed tech values
+            double m_precompute_V_bi_;
+            double m_precompute_x_d0_;
+            double m_precompute_C_j0_;
+            double m_precompute_Q_0_;
+            
+            
+    }; // class RingModulator
+} // namespace DSENT
+
+#endif // __DSENT_MODEL_OPTICAL_RINGMODULATOR_H__
+
-- 
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