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// The MIT License
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// The MIT License
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// Copyright (c) 2006-2007 Massachusetts Institute of Technology
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// Copyright (c) 2006-2007 Massachusetts Institute of Technology
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// Permission is hereby granted, free of charge, to any person obtaining a copy
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// Permission is hereby granted, free of charge, to any person obtaining a copy
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// of this software and associated documentation files (the "Software"), to deal
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// of this software and associated documentation files (the "Software"), to deal
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// in the Software without restriction, including without limitation the rights
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// in the Software without restriction, including without limitation the rights
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// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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// copies of the Software, and to permit persons to whom the Software is
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// copies of the Software, and to permit persons to whom the Software is
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// furnished to do so, subject to the following conditions:
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// furnished to do so, subject to the following conditions:
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// The above copyright notice and this permission notice shall be included in
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// The above copyright notice and this permission notice shall be included in
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// all copies or substantial portions of the Software.
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// all copies or substantial portions of the Software.
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// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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// THE SOFTWARE.
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// THE SOFTWARE.
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//**********************************************************************
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//**********************************************************************
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// Memory for Entropy Decoder
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// Memory for Entropy Decoder
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//----------------------------------------------------------------------
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//----------------------------------------------------------------------
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//
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//
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//
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//
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//
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//
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import H264Types::*;
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import H264Types::*;
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import IMemEDDecoupled::*;
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import IMemEDDecoupled::*;
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import RegFile::*;
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import RegFile::*;
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import GetPut::*;
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import GetPut::*;
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import ClientServer::*;
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import ClientServer::*;
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import FIFO::*;
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import FIFO::*;
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//----------------------------------------------------------------------
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//----------------------------------------------------------------------
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// Main module
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// Main module
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//----------------------------------------------------------------------
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//----------------------------------------------------------------------
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module mkMemEDDecoupled(IMemEDDecoupled#(index_size,data_size))
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module mkMemEDDecoupled(IMemEDDecoupled#(index_size,data_size))
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provisos (Bits#(MemReq#(index_size,data_size),mReqLen),
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provisos (Bits#(MemReq#(index_size,data_size),mReqLen),
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Bits#(MemResp#(data_size),mRespLen));
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Bits#(MemResp#(data_size),mRespLen));
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//-----------------------------------------------------------
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//-----------------------------------------------------------
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// State
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// State
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RegFile#(Bit#(index_size),Bit#(data_size)) rfile <- mkRegFileWCF(0,fromInteger(valueof(TSub#(TExp#(index_size),1))));
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RegFile#(Bit#(index_size),Bit#(data_size)) rfile <- mkRegFileWCF(0,fromInteger(valueof(TSub#(TExp#(index_size),1))));
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FIFO#(MemReq#(index_size,data_size)) reqQStore <- mkFIFO();
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FIFO#(MemReq#(index_size,data_size)) reqQStore <- mkFIFO();
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FIFO#(MemReq#(index_size,data_size)) reqQLoad <- mkFIFO();
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FIFO#(MemReq#(index_size,data_size)) reqQLoad <- mkFIFO();
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FIFO#(MemResp#(data_size)) respQ <- mkFIFO();
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FIFO#(MemResp#(data_size)) respQ <- mkFIFO();
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rule storing ( reqQStore.first() matches tagged StoreReq { addr:.addrt,data:.datat} );
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rule storing ( reqQStore.first() matches tagged StoreReq { addr:.addrt,data:.datat} );
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rfile.upd(addrt,datat);
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rfile.upd(addrt,datat);
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reqQStore.deq();
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reqQStore.deq();
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endrule
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endrule
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rule reading ( reqQLoad.first() matches tagged LoadReq .addrt );
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rule reading ( reqQLoad.first() matches tagged LoadReq .addrt );
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respQ.enq( tagged LoadResp (rfile.sub(addrt)) );
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respQ.enq( tagged LoadResp (rfile.sub(addrt)) );
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reqQLoad.deq();
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reqQLoad.deq();
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endrule
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endrule
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interface Put request_store = fifoToPut(reqQStore);
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interface Put request_store = fifoToPut(reqQStore);
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interface Put request_load = fifoToPut(reqQLoad);
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interface Put request_load = fifoToPut(reqQLoad);
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interface Get response = fifoToGet(respQ);
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interface Get response = fifoToGet(respQ);
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endmodule
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endmodule
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