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diff --git a/src/mem/ruby/structures/MemoryControl.hh b/src/mem/ruby/structures/MemoryControl.hh
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+/*
+ * Copyright (c) 1999-2008 Mark D. Hill and David A. Wood
+ * Copyright (c) 2012 Advanced Micro Devices, Inc.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are
+ * met: redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer;
+ * redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution;
+ * neither the name of the copyright holders nor the names of its
+ * contributors may be used to endorse or promote products derived from
+ * this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#ifndef __MEM_RUBY_SYSTEM_ABSTRACT_MEMORY_CONTROL_HH__
+#define __MEM_RUBY_SYSTEM_ABSTRACT_MEMORY_CONTROL_HH__
+
+#include <iostream>
+#include <list>
+#include <string>
+
+#include "mem/protocol/MemoryControlRequestType.hh"
+#include "mem/ruby/common/Consumer.hh"
+#include "mem/ruby/slicc_interface/Message.hh"
+#include "mem/ruby/structures/MemoryNode.hh"
+#include "params/MemoryControl.hh"
+#include "sim/clocked_object.hh"
+
+//////////////////////////////////////////////////////////////////////////////
+
+class MemoryControl : public ClockedObject, public Consumer
+{
+  public:
+    typedef MemoryControlParams Params;
+    const Params *params() const
+    { return dynamic_cast<const Params *>(_params); }
+
+    MemoryControl(const Params *p);
+    virtual void init() = 0;
+    virtual void reset() = 0;
+
+    ~MemoryControl();
+
+    virtual void wakeup() = 0;
+
+    virtual void setConsumer(Consumer* consumer_ptr) = 0;
+    virtual Consumer* getConsumer() = 0;
+    virtual void setClockObj(ClockedObject* consumer_ptr) {}
+
+    virtual void setDescription(const std::string& name) = 0;
+    virtual std::string getDescription() = 0;
+
+    // Called from the directory:
+    virtual void enqueue(const MsgPtr& message, Cycles latency) = 0;
+    virtual void enqueueMemRef(MemoryNode *memRef) = 0;
+    virtual void dequeue() = 0;
+    virtual const Message* peek() = 0;
+    virtual MemoryNode *peekNode() = 0;
+    virtual bool isReady() = 0;
+    virtual bool areNSlotsAvailable(int n) = 0;  // infinite queue length
+
+    virtual void print(std::ostream& out) const = 0;
+    virtual void regStats() {};
+
+    virtual const int getChannel(const physical_address_t addr) const = 0;
+    virtual const int getBank(const physical_address_t addr) const = 0;
+    virtual const int getRank(const physical_address_t addr) const = 0;
+    virtual const int getRow(const physical_address_t addr) const = 0;
+
+    //added by SS
+    virtual int getBanksPerRank() = 0;
+    virtual int getRanksPerDimm() = 0;
+    virtual int getDimmsPerChannel() = 0;
+
+    virtual void recordRequestType(MemoryControlRequestType requestType);
+
+    virtual bool functionalReadBuffers(Packet *pkt)
+    { fatal("Functional read access not implemented!");}
+    virtual uint32_t functionalWriteBuffers(Packet *pkt)
+    { fatal("Functional read access not implemented!");}
+
+protected:
+    class MemCntrlEvent : public Event
+    {
+      public:
+        MemCntrlEvent(MemoryControl* _mem_cntrl)
+        {
+            mem_cntrl = _mem_cntrl;
+        }
+      private:
+        void process() { mem_cntrl->wakeup(); }
+
+        MemoryControl* mem_cntrl;
+    };
+
+    MemCntrlEvent m_event;
+};
+
+#endif //   __MEM_RUBY_SYSTEM_ABSTRACT_MEMORY_CONTROL_HH__