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Subversion Repositories bluespec-h264
[/] [bluespec-h264/] [trunk/] [LumaChromaParallel/] [mkFrameBuffer.bsv] - Rev 92
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// The MIT License
// Copyright (c) 2006-2007 Massachusetts Institute of Technology
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to deal
// in the Software without restriction, including without limitation the rights
// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
// copies of the Software, and to permit persons to whom the Software is
// furnished to do so, subject to the following conditions:
// The above copyright notice and this permission notice shall be included in
// all copies or substantial portions of the Software.
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
// THE SOFTWARE.
//**********************************************************************
// Frame Buffer
//----------------------------------------------------------------------
//
//
//
package mkFrameBuffer;
import H264Types::*;
import IFrameBuffer::*;
import RegFile::*;
import GetPut::*;
import ClientServer::*;
import FIFO::*;
//-----------------------------------------------------------
// Register file module
//-----------------------------------------------------------
interface FBRFile2;
method Action store( Bit#(FrameBufferSz) addr, Bit#(32) data );
method Bit#(32) load1( Bit#(FrameBufferSz) addr );
method Bit#(32) load2( Bit#(FrameBufferSz) addr );
method Bit#(32) load3( Bit#(FrameBufferSz) addr );
endinterface
module mkFBRFile2( FBRFile2 );
RegFile#(Bit#(FrameBufferSz),Bit#(32)) rfile <- mkRegFile(0,frameBufferSize);
method Action store( Bit#(FrameBufferSz) addr, Bit#(32) data );
rfile.upd( addr, data );
endmethod
method Bit#(32) load1( Bit#(FrameBufferSz) addr );
return rfile.sub(addr);
endmethod
method Bit#(32) load2( Bit#(FrameBufferSz) addr );
return rfile.sub(addr);
endmethod
method Bit#(32) load3( Bit#(FrameBufferSz) addr );
return rfile.sub(addr);
endmethod
endmodule
//----------------------------------------------------------------------
// Main module
//----------------------------------------------------------------------
module mkFrameBuffer( IFrameBuffer );
//-----------------------------------------------------------
// State
FBRFile2 rfile2 <- mkFBRFile2;
FIFO#(FrameBufferLoadReq) loadReqQ1 <- mkFIFO();
FIFO#(FrameBufferLoadResp) loadRespQ1 <- mkFIFO();
FIFO#(FrameBufferLoadReq) loadReqQ2 <- mkFIFO();
FIFO#(FrameBufferLoadResp) loadRespQ2 <- mkFIFO();
FIFO#(FrameBufferLoadReq) loadReqQ3 <- mkFIFO();
FIFO#(FrameBufferLoadResp) loadRespQ3 <- mkFIFO();
FIFO#(FrameBufferStoreReq) storeReqQ <- mkFIFO();
rule loading1 ( loadReqQ1.first() matches tagged FBLoadReq .addrt );
if(addrt<frameBufferSize)
begin
loadRespQ1.enq( tagged FBLoadResp rfile2.load1(addrt) );
loadReqQ1.deq();
end
else
$display( "ERROR FrameBuffer: loading1 outside range" );
endrule
rule loading2 ( loadReqQ2.first() matches tagged FBLoadReq .addrt );
$display("Trace FrameBuffer interLumaReq");
if(addrt<frameBufferSize)
begin
loadRespQ2.enq( tagged FBLoadResp rfile2.load2(addrt) );
loadReqQ2.deq();
end
else
$display( "ERROR FrameBuffer: loading2 outside range" );
endrule
rule loading3 ( loadReqQ3.first() matches tagged FBLoadReq .addrt );
$display("Trace FrameBuffer interChromaReq");
if(addrt<frameBufferSize)
begin
loadRespQ3.enq( tagged FBLoadResp rfile2.load3(addrt) );
loadReqQ3.deq();
end
else
$display( "ERROR FrameBuffer: loading2 outside range" );
endrule
rule storing ( storeReqQ.first() matches tagged FBStoreReq { addr:.addrt,data:.datat} );
if(addrt<frameBufferSize)
begin
rfile2.store(addrt,datat);
storeReqQ.deq();
end
else
$display( "ERROR FrameBuffer: storing outside range" );
endrule
rule syncing ( loadReqQ1.first() matches tagged FBEndFrameSync &&& loadReqQ2.first() matches tagged FBEndFrameSync &&&
loadReqQ3.first() matches tagged FBEndFrameSync &&& storeReqQ.first() matches tagged FBEndFrameSync);
$display("Trace FrameBuffer: EndOfFrame Sync");
loadReqQ1.deq();
loadReqQ2.deq();
loadReqQ3.deq();
storeReqQ.deq();
endrule
rule loadReq1Blocked;
$display("Trace FrameBuffer: check LoadQ1 %h", loadReqQ1.first);
endrule
rule loadReq2Blocked;
$display("Trace FrameBuffer: check LoadQ2 %h", loadReqQ2.first);
endrule
rule loadReq3Blocked;
$display("Trace FrameBuffer: check LoadQ3 %h", loadReqQ3.first);
endrule
interface Server server_load1;
interface Put request = fifoToPut(loadReqQ1);
interface Get response = fifoToGet(loadRespQ1);
endinterface
interface Server server_load2;
interface Put request = fifoToPut(loadReqQ2);
interface Get response = fifoToGet(loadRespQ2);
endinterface
interface Server server_load3;
interface Put request = fifoToPut(loadReqQ3);
interface Get response = fifoToGet(loadRespQ3);
endinterface
interface Put server_store = fifoToPut(storeReqQ);
endmodule
endpackage
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