| /* |
| * Copyright (c) 2012 ARM Limited |
| * All rights reserved |
| * |
| * The license below extends only to copyright in the software and shall |
| * not be construed as granting a license to any other intellectual |
| * property including but not limited to intellectual property relating |
| * to a hardware implementation of the functionality of the software |
| * licensed hereunder. You may use the software subject to the license |
| * terms below provided that you ensure that this notice is replicated |
| * unmodified and in its entirety in all distributions of the software, |
| * modified or unmodified, in source code or in binary form. |
| * |
| * Copyright (c) 2001-2005 The Regents of The University of Michigan |
| * 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. |
| * |
| * Authors: Ron Dreslinski |
| * Andreas Hansson |
| */ |
| |
| /** |
| * @file |
| * SimpleMemory declaration |
| */ |
| |
| #ifndef __SIMPLE_MEMORY_HH__ |
| #define __SIMPLE_MEMORY_HH__ |
| |
| #include "mem/abstract_mem.hh" |
| #include "mem/tport.hh" |
| #include "params/SimpleMemory.hh" |
| |
| /** |
| * The simple memory is a basic multi-ported memory with an infinite |
| * throughput and a fixed latency, potentially with a variance added |
| * to it. It uses a SimpleTimingPort to implement the timing accesses. |
| */ |
| class SimpleMemory : public AbstractMemory |
| { |
| |
| private: |
| |
| class MemoryPort : public SimpleTimingPort |
| { |
| SimpleMemory& memory; |
| |
| public: |
| |
| MemoryPort(const std::string& _name, SimpleMemory& _memory); |
| |
| protected: |
| |
| virtual Tick recvAtomic(PacketPtr pkt); |
| |
| virtual void recvFunctional(PacketPtr pkt); |
| |
| virtual AddrRangeList getAddrRanges(); |
| |
| }; |
| |
| std::vector<MemoryPort*> ports; |
| |
| Tick lat; |
| Tick lat_var; |
| |
| public: |
| |
| typedef SimpleMemoryParams Params; |
| SimpleMemory(const Params *p); |
| virtual ~SimpleMemory() { } |
| |
| unsigned int drain(Event* de); |
| |
| virtual SlavePort& getSlavePort(const std::string& if_name, int idx = -1); |
| virtual void init(); |
| |
| const Params * |
| params() const |
| { |
| return dynamic_cast<const Params *>(_params); |
| } |
| |
| protected: |
| |
| Tick doAtomicAccess(PacketPtr pkt); |
| void doFunctionalAccess(PacketPtr pkt); |
| virtual Tick calculateLatency(PacketPtr pkt); |
| |
| }; |
| |
| #endif //__SIMPLE_MEMORY_HH__ |