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Prevent various debug prints by default

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This commit is contained in:
Peter Rugg
2025-01-08 18:43:05 +00:00
parent d1bea2faf0
commit 1df304a820
6 changed files with 127 additions and 105 deletions
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2
src_Core/RISCY_OOO/coherence/src/CCPipe.bsv
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@@ -494,7 +494,6 @@ module mkCCPipeSingleCycle#(
end
repRam.deqRdResp;
repT repInfo = fromMaybe(repRam.rdResp, e2m.repInfo);
$display("%t : doTagMatch repRamdeqRdResp ", $time);
// do tag match to get way to occupy
Vector#(wayNum, tagT) tagVec;
Vector#(wayNum, msiT) csVec;
@@ -564,7 +563,6 @@ module mkCCPipeSingleCycle#(
dataRam[i].rdReq(index);
end
repRam.rdReq(index);
$display("%t : enq repRam.rdReq ", $time);
// write reg
enq2MatchT e2m = Enq2Match {
cmd: cmd,

2
src_Core/RISCY_OOO/coherence/src/IBank.bsv
View File

@@ -145,7 +145,7 @@ module mkIBank#(
Add#(TAdd#(tagSz, indexSz), TAdd#(lgBankNum, LgLineSzBytes), AddrSz)
);
Bool verbose = True;
Bool verbose = False;
ICRqMshr#(cRqNum, wayT, tagT, procRqT, resultT) cRqMshr <- mkICRqMshrLocal;

224
src_Core/RISCY_OOO/coherence/src/Prefetcher.bsv
View File

@@ -65,12 +65,13 @@ module mkAlwaysRequestPrefetcher(Prefetcher);
endmodule
module mkPrintPrefetcher(Prefetcher);
Bool verbose = False;
method Action reportAccess(Addr addr, HitOrMiss hitMiss);
if (hitMiss == HIT) begin
$display("%t PrintPrefetcher report HIT %h", $time, addr);
if (verbose) $display("%t PrintPrefetcher report HIT %h", $time, addr);
end
else begin
$display("%t PrintPrefetcher report MISS %h", $time, addr);
if (verbose) $display("%t PrintPrefetcher report MISS %h", $time, addr);
end
endmethod
method ActionValue#(Addr) getNextPrefetchAddr if (False);
@@ -83,15 +84,16 @@ module mkNextLineOnMissPrefetcher(Prefetcher)
NumAlias#(nextLinesOnMiss, 1),
Alias#(rqCntT, Bit#(TLog#(TAdd#(nextLinesOnMiss, 1))))
);
Bool verbose = False;
Reg#(Addr) lastMissAddr <- mkReg(0);
Reg#(rqCntT) sentRequestCounter <- mkReg(fromInteger(valueOf(nextLinesOnMiss)));
method Action reportAccess(Addr addr, HitOrMiss hitMiss);
if (hitMiss == HIT) begin
$display("%t Prefetcher report HIT %h", $time, addr);
if (verbose) $display("%t Prefetcher report HIT %h", $time, addr);
end
else begin
$display("%t Prefetcher report MISS %h", $time, addr);
if (verbose) $display("%t Prefetcher report MISS %h", $time, addr);
lastMissAddr <= addr;
sentRequestCounter <= 0;
end
@@ -101,7 +103,7 @@ module mkNextLineOnMissPrefetcher(Prefetcher)
sentRequestCounter <= sentRequestCounter + 1;
let addrToRequest = lastMissAddr + (zeroExtend(sentRequestCounter) + 1)*fromInteger(valueOf(DataSz));
$display("%t Prefetcher getNextPrefetchAddr requesting %h", $time, addrToRequest);
if (verbose) $display("%t Prefetcher getNextPrefetchAddr requesting %h", $time, addrToRequest);
return addrToRequest;
endmethod
endmodule
@@ -111,17 +113,18 @@ module mkNextLineOnAllPrefetcher(Prefetcher)
NumAlias#(nextLinesOnAccess, 3),
Alias#(rqCntT, Bit#(TLog#(TAdd#(nextLinesOnAccess, 1))))
);
Bool verbose = False;
Reg#(Addr) lastAccessAddr <- mkReg(0);
Reg#(rqCntT) sentRequestCounter <- mkReg(fromInteger(valueOf(nextLinesOnAccess)));
method Action reportAccess(Addr addr, HitOrMiss hitMiss);
if (hitMiss == HIT) begin
$display("%t Prefetcher report HIT %h", $time, addr);
if (verbose) $display("%t Prefetcher report HIT %h", $time, addr);
lastAccessAddr <= addr;
sentRequestCounter <= 0;
end
else begin
$display("%t Prefetcher report MISS %h", $time, addr);
if (verbose) $display("%t Prefetcher report MISS %h", $time, addr);
lastAccessAddr <= addr;
sentRequestCounter <= 0;
end
@@ -131,12 +134,13 @@ module mkNextLineOnAllPrefetcher(Prefetcher)
sentRequestCounter <= sentRequestCounter + 1;
let addrToRequest = lastAccessAddr + (zeroExtend(sentRequestCounter) + 1)*fromInteger(valueOf(DataSz));
$display("%t Prefetcher getNextPrefetchAddr requesting %h", $time, addrToRequest);
if (verbose) $display("%t Prefetcher getNextPrefetchAddr requesting %h", $time, addrToRequest);
return addrToRequest;
endmethod
endmodule
module mkSingleWindowPrefetcher(Prefetcher);
Bool verbose = False;
Integer cacheLinesInRange = 2;
Reg#(LineAddr) rangeEnd <- mkReg(0); //Points to one CLine after end of range
Reg#(LineAddr) nextToAsk <- mkReg(0);
@@ -147,11 +151,11 @@ module mkSingleWindowPrefetcher(Prefetcher);
cl < rangeEnd) begin
let nextEnd = cl + fromInteger(cacheLinesInRange) + 1;
$display("%t Prefetcher report HIT %h, moving window end to %h", $time, addr, Addr'{nextEnd, '0});
if (verbose) $display("%t Prefetcher report HIT %h, moving window end to %h", $time, addr, Addr'{nextEnd, '0});
rangeEnd <= nextEnd;
end
else if (hitMiss == MISS) begin
$display("%t Prefetcher report MISS %h", $time, addr);
if (verbose) $display("%t Prefetcher report MISS %h", $time, addr);
//Reset window
nextToAsk <= getLineAddr(addr) + 1;
rangeEnd <= getLineAddr(addr) + fromInteger(cacheLinesInRange) + 1;
@@ -160,12 +164,13 @@ module mkSingleWindowPrefetcher(Prefetcher);
method ActionValue#(Addr) getNextPrefetchAddr if (nextToAsk != rangeEnd);
nextToAsk <= nextToAsk + 1;
let retAddr = Addr'{nextToAsk, '0}; //extend cache line address to regular address
$display("%t Prefetcher getNextPrefetchAddr requesting %h", $time, retAddr);
if (verbose) $display("%t Prefetcher getNextPrefetchAddr requesting %h", $time, retAddr);
return retAddr;
endmethod
endmodule
module mkSingleWindowL1LLPrefetcher(Prefetcher);
Bool verbose = False;
Integer cacheLinesInRange = 2;
Reg#(LineAddr) rangeEnd <- mkReg(0); //Points to one CLine after end of range
Reg#(LineAddr) nextToAsk <- mkReg(0);
@@ -175,11 +180,11 @@ module mkSingleWindowL1LLPrefetcher(Prefetcher);
cl < rangeEnd) begin
let nextEnd = cl + fromInteger(cacheLinesInRange) + 1;
$display("%t Prefetcher report HIT %h, moving window end to %h", $time, addr, Addr'{nextEnd, '0});
if (verbose) $display("%t Prefetcher report HIT %h, moving window end to %h", $time, addr, Addr'{nextEnd, '0});
rangeEnd <= nextEnd;
end
else if (hitMiss == MISS) begin
$display("%t Prefetcher report MISS %h", $time, addr);
if (verbose) $display("%t Prefetcher report MISS %h", $time, addr);
//Reset window
nextToAsk <= getLineAddr(addr) + 1;
rangeEnd <= getLineAddr(addr) + fromInteger(cacheLinesInRange) + 1;
@@ -188,7 +193,7 @@ module mkSingleWindowL1LLPrefetcher(Prefetcher);
method ActionValue#(Addr) getNextPrefetchAddr if (nextToAsk != rangeEnd);
nextToAsk <= nextToAsk + 1;
let retAddr = Addr'{nextToAsk, '0}; //extend cache line address to regular address
$display("%t Prefetcher getNextPrefetchAddr requesting %h", $time, retAddr);
if(verbose) $display("%t Prefetcher getNextPrefetchAddr requesting %h", $time, retAddr);
return retAddr;
endmethod
endmodule
@@ -204,11 +209,13 @@ provisos(
NumAlias#(numWindows, 4),
Alias#(windowIdxT, Bit#(TLog#(numWindows)))
);
Bool verbose = False;
Integer cacheLinesInRange = 2;
Vector#(numWindows, Reg#(StreamEntry)) streams
<- replicateM(mkReg(StreamEntry {rangeEnd: '0, nextToAsk: '0}));
Vector#(numWindows, Reg#(windowIdxT)) shiftReg <- genWithM(compose(mkReg, fromInteger));
function Action moveWindowToFront(windowIdxT window) =
action
if (shiftReg[0] == window) begin
@@ -257,13 +264,13 @@ provisos(
moveWindowToFront(pack(idx)); //Update window as just used
let newRangeEnd = getLineAddr(addr) + fromInteger(cacheLinesInRange) + 1;
if (hitMiss == HIT) begin
$display("%t Prefetcher report HIT %h, moving window end to %h for window idx %h",
if (verbose) $display("%t Prefetcher report HIT %h, moving window end to %h for window idx %h",
$time, addr, Addr'{newRangeEnd, '0}, idx);
streams[idx].rangeEnd <= newRangeEnd;
end
else if (hitMiss == MISS) begin
//Also reset nextToAsk on miss
$display("%t Prefetcher report MISS %h, moving window end to %h for window idx %h",
if (verbose) $display("%t Prefetcher report MISS %h, moving window end to %h for window idx %h",
$time, addr, Addr'{newRangeEnd, '0}, idx);
streams[idx] <=
StreamEntry {nextToAsk: getLineAddr(addr) + 1,
@@ -271,7 +278,7 @@ provisos(
end
end
else if (hitMiss == MISS) begin
$display("%t Prefetcher report MISS %h, allocating new window, idx %h", $time, addr, shiftReg[3]);
if (verbose) $display("%t Prefetcher report MISS %h, allocating new window, idx %h", $time, addr, shiftReg[3]);
streams[shiftReg[3]] <=
StreamEntry {nextToAsk: getLineAddr(addr) + 1,
rangeEnd: getLineAddr(addr) + fromInteger(cacheLinesInRange) + 1};
@@ -287,7 +294,7 @@ provisos(
streams[shiftReg[0]].nextToAsk <= streams[shiftReg[0]].nextToAsk + 1;
let retAddr = Addr'{streams[shiftReg[0]].nextToAsk, '0}; //extend cache line address to regular address
$display("%t Prefetcher getNextPrefetchAddr requesting %h from window idx %h", $time, retAddr, shiftReg[0]);
if (verbose) $display("%t Prefetcher getNextPrefetchAddr requesting %h from window idx %h", $time, retAddr, shiftReg[0]);
return retAddr;
endmethod
@@ -303,6 +310,8 @@ provisos(
<- replicateM(mkReg(StreamEntry {rangeEnd: '0, nextToAsk: '0}));
Vector#(numWindows, Reg#(windowIdxT)) shiftReg <- genWithM(compose(mkReg, fromInteger));
Bool verbose = False;
function Action moveWindowToFront(windowIdxT window) =
action
if (shiftReg[0] == window) begin
@@ -350,13 +359,13 @@ provisos(
if (idxMaybe matches tagged Valid .idx) begin
moveWindowToFront(pack(idx)); //Update window as just used
let newRangeEnd = getLineAddr(addr) + fromInteger(cacheLinesInRange) + 1;
$display("%t Prefetcher report access %h, moving window end to %h for window idx %h",
if (verbose) $display("%t Prefetcher report access %h, moving window end to %h for window idx %h",
$time, addr, Addr'{newRangeEnd, '0}, idx);
streams[idx].rangeEnd <= newRangeEnd;
end
else if (hitMiss == MISS) begin
//A miss in L1 is not necessarily a miss in L2, so this might create a window for lines already in L2
$display("%t Prefetcher report MISS %h, allocating new window, idx %h", $time, addr, shiftReg[3]);
if (verbose) $display("%t Prefetcher report MISS %h, allocating new window, idx %h", $time, addr, shiftReg[3]);
streams[shiftReg[3]] <=
StreamEntry {nextToAsk: getLineAddr(addr) + 1,
rangeEnd: getLineAddr(addr) + fromInteger(cacheLinesInRange) + 1};
@@ -372,7 +381,7 @@ provisos(
streams[shiftReg[0]].nextToAsk <= streams[shiftReg[0]].nextToAsk + 1;
let retAddr = Addr'{streams[shiftReg[0]].nextToAsk, '0}; //extend cache line address to regular address
$display("%t Prefetcher getNextPrefetchAddr requesting %h from window idx %h", $time, retAddr, shiftReg[0]);
if (verbose) $display("%t Prefetcher getNextPrefetchAddr requesting %h from window idx %h", $time, retAddr, shiftReg[0]);
return retAddr;
endmethod
@@ -408,6 +417,7 @@ module mkTargetTable(TargetTable#(narrowTableSize, wideTableSize)) provisos
Add#(c__, TLog#(wideTableSize), 32),
Add#(d__, TLog#(wideTableSize), 58)
);
Bool verbose = False;
Vector#(narrowTableSize, Ehr#(2, Maybe#(narrowTargetEntryT))) narrowTable <- replicateM(mkEhr(Invalid));
Vector#(wideTableSize, Ehr#(2, Maybe#(wideTargetEntryT))) wideTable <- replicateM(mkEhr(Invalid));
method Action set(LineAddr prevAddr, LineAddr currAddr);
@@ -471,6 +481,7 @@ module mkTargetTableBRAM(TargetTableBRAM#(narrowTableSize, wideTableSize)) provi
Add#(c__, TLog#(wideTableSize), 32),
Add#(d__, TLog#(wideTableSize), 58)
);
Bool verbose = False;
RWBramCore#(Bit#(narrowTableIdxBits), Maybe#(narrowTargetEntryT)) narrowTable <- mkRWBramCore;
RWBramCore#(Bit#(wideTableIdxBits), Maybe#(wideTargetEntryT)) wideTable <- mkRWBramCore;
Reg#(LineAddr) readReqLineAddr <- mkReg(?);
@@ -519,7 +530,7 @@ module mkTargetTableBRAM(TargetTableBRAM#(narrowTableSize, wideTableSize)) provi
if (clearEntry) begin
//narrowTable.wrReq(narrowIdx, Invalid);
end
$display("%t found narrow table entry %h", $time, addr + signExtend(pack(entry.distance)));
if (verbose) $display("%t found narrow table entry %h", $time, addr + signExtend(pack(entry.distance)));
return Valid(addr + signExtend(pack(entry.distance)));
end
else if (wideTable.rdResp matches tagged Valid .entry
@@ -527,7 +538,7 @@ module mkTargetTableBRAM(TargetTableBRAM#(narrowTableSize, wideTableSize)) provi
if (clearEntry) begin
//wideTable.wrReq(wideIdx, Invalid);
end
$display("%t found wide table entry %h", $time, entry.target);
if (verbose) $display("%t found wide table entry %h", $time, entry.target);
return Valid(entry.target);
end
else begin
@@ -558,6 +569,8 @@ module mkTargetTableDouble(TargetTableDouble#(narrowTableSize, wideTableSize)) p
Add#(d__, TLog#(wideTableSize), 58)
);
Bool verbose = False;
//on any request, read all 4 tables. get prefetches. if it's a miss save both MRU entries.
//on a miss, perform a regular table write to the MRU table. if it's a narrow write, write the old MRU narrow entry to the LRU narrow table.
//one method, readReq, with parameter isMiss. sends read requests to all 4 tables.
@@ -667,7 +680,7 @@ module mkTargetTableDouble(TargetTableDouble#(narrowTableSize, wideTableSize)) p
action
let distance = currAddr - lastMissAddr;
Bit#(32) lastMissAddrHash = hash(lastMissAddr);
$display("%t Recording miss from %x to %x", $time, lastMissAddr, currAddr);
if (verbose) $display("%t Recording miss from %x to %x", $time, lastMissAddr, currAddr);
if (abs(distance) < fromInteger(valueOf(narrowMaxDistanceAbs))) begin
//Store lastMissAddr -> currAddr in narrow MRU table
@@ -709,7 +722,7 @@ module mkTargetTableDouble(TargetTableDouble#(narrowTableSize, wideTableSize)) p
endfunction
method Action sendReadWriteReq(LineAddr addr, HitOrMiss hitMiss);
$display("%t send read write req for %x", $time, addr);
if (verbose) $display("%t send read write req for %x", $time, addr);
Bit#(32) addrHash = hash(addr);
Bit#(narrowTableIdxBits) narrowIdx = truncate(addrHash);
narrowTableMRU.rdReq(narrowIdx);
@@ -747,7 +760,7 @@ module mkTargetTableDouble(TargetTableDouble#(narrowTableSize, wideTableSize)) p
let entryMRU <- checkReadResp(addr, addrHash, narrowTableMRU.rdResp, wideTableMRU.rdResp);
let entryLRU <- checkReadResp(addr, addrHash, narrowTableLRU.rdResp, wideTableLRU.rdResp);
Tuple2#(Maybe#(LineAddr), Maybe#(LineAddr)) retval = tuple2(entryMRU, entryLRU);
$display("%t read resp for %x returning ", $time, addr, fshow(retval));
if (verbose) $display("%t read resp for %x returning ", $time, addr, fshow(retval));
return retval;
endmethod
endmodule
@@ -756,6 +769,7 @@ module mkBRAMSingleWindowTargetPrefetcher(Prefetcher) provisos
(
NumAlias#(numLastRequests, 16)
);
Bool verbose = False;
Integer cacheLinesInRange = 1;
Reg#(LineAddr) rangeEnd <- mkReg(0); //Points to one CLine after end of range
Reg#(LineAddr) nextToAsk <- mkReg(0);
@@ -778,17 +792,17 @@ module mkBRAMSingleWindowTargetPrefetcher(Prefetcher) provisos
method Action reportAccess(Addr addr, HitOrMiss hitMiss);
let cl = getLineAddr(addr);
$display("%t prefecher reportAccess", $time);
if (verbose) $display("%t prefecher reportAccess", $time);
if (hitMiss == HIT &&
rangeEnd - fromInteger(cacheLinesInRange) - 1 < cl &&
cl < rangeEnd) begin
let nextEnd = cl + fromInteger(cacheLinesInRange) + 1;
$display("%t Prefetcher report HIT %h, moving window end to %h", $time, addr, Addr'{nextEnd, '0});
if (verbose) $display("%t Prefetcher report HIT %h, moving window end to %h", $time, addr, Addr'{nextEnd, '0});
rangeEnd <= nextEnd;
end
else if (hitMiss == MISS) begin
$display("%t Prefetcher report MISS %h", $time, addr);
if (verbose) $display("%t Prefetcher report MISS %h", $time, addr);
//Reset window
nextToAsk <= cl + 1;
rangeEnd <= cl + fromInteger(cacheLinesInRange) + 1;
@@ -796,14 +810,14 @@ module mkBRAMSingleWindowTargetPrefetcher(Prefetcher) provisos
if (hitMiss == MISS && cl != lastChildRequest + 1 && cl != lastChildRequest && cl != lastChildRequest - 1) begin
//Try only recording table entries on a miss!
$display("%t Prefetcher add target entry from addr %h to addr %h", $time, Addr'{lastChildRequest, '0}, addr);
if (verbose) $display("%t Prefetcher add target entry from addr %h to addr %h", $time, Addr'{lastChildRequest, '0}, addr);
targetTable.writeReq(lastChildRequest, cl);
end
// Send target request if not in last 16 hits.
if (!elem(hash(cl), lastTargetRequests)) begin
targetTable.readReq(cl);
$display("%t Prefetcher sending target read request for %h", $time, cl);
if (verbose) $display("%t Prefetcher sending target read request for %h", $time, cl);
lastTargetRequests <= shiftInAt0(lastTargetRequests, hash(cl));
end
lastChildRequest <= cl;
@@ -816,13 +830,13 @@ module mkBRAMSingleWindowTargetPrefetcher(Prefetcher) provisos
// prefetch the stored target first
retAddr = {targetTableReadResp.first, '0};
targetTableReadResp.deq();
$display("%t Prefetcher getNextPrefetchAddr requesting target entry %h", $time, retAddr);
if (verbose) $display("%t Prefetcher getNextPrefetchAddr requesting target entry %h", $time, retAddr);
end
else begin
//If no table entry, prefetch further in window
nextToAsk <= nextToAsk + 1;
retAddr = {nextToAsk, '0};
$display("%t Prefetcher getNextPrefetchAddr requesting next-line %h", $time, retAddr);
if (verbose) $display("%t Prefetcher getNextPrefetchAddr requesting next-line %h", $time, retAddr);
end
return retAddr;
endmethod
@@ -844,10 +858,12 @@ provisos(
FIFOF#(LineAddr) targetTableReadResp <- mkBypassFIFOF;
Reg#(Vector#(numLastRequests, Bit#(32))) lastTargetRequests <- mkReg(replicate(0));
Bool verbose = False;
rule sendReadReq;
if (!elem(hash(lastChildRequest), lastTargetRequests)) begin
targetTable.readReq(lastChildRequest);
$display("%t Prefetcher sending target read request for %h", $time, Addr'{lastChildRequest, 'h0});
if (verbose) $display("%t Prefetcher sending target read request for %h", $time, Addr'{lastChildRequest, 'h0});
lastTargetRequests <= shiftInAt0(lastTargetRequests, hash(lastChildRequest));
end
endrule
@@ -909,13 +925,13 @@ provisos(
moveWindowToFront(pack(idx)); //Update window as just used
let newRangeEnd = getLineAddr(addr) + fromInteger(cacheLinesInRange) + 1;
if (hitMiss == HIT) begin
$display("%t Prefetcher report HIT %h, moving window end to %h for window idx %h",
if (verbose) $display("%t Prefetcher report HIT %h, moving window end to %h for window idx %h",
$time, addr, Addr'{newRangeEnd, '0}, idx);
streams[idx].rangeEnd <= newRangeEnd;
end
else if (hitMiss == MISS) begin
//Also reset nextToAsk on miss
$display("%t Prefetcher report MISS %h, moving window end to %h for window idx %h",
if (verbose) $display("%t Prefetcher report MISS %h, moving window end to %h for window idx %h",
$time, addr, Addr'{newRangeEnd, '0}, idx);
streams[idx] <=
StreamEntry {nextToAsk: getLineAddr(addr) + 1,
@@ -923,7 +939,7 @@ provisos(
end
end
else if (hitMiss == MISS) begin
$display("%t Prefetcher report MISS %h, allocating new window, idx %h", $time, addr, shiftReg[3]);
if (verbose) $display("%t Prefetcher report MISS %h, allocating new window, idx %h", $time, addr, shiftReg[3]);
streams[shiftReg[3]] <=
StreamEntry {nextToAsk: getLineAddr(addr) + 1,
rangeEnd: getLineAddr(addr) + fromInteger(cacheLinesInRange) + 1};
@@ -935,7 +951,7 @@ provisos(
// Update target prefetcher
if (hitMiss == MISS && cl != lastChildRequest + 1 && cl != lastChildRequest && cl != lastChildRequest - 1) begin
$display("%t Prefetcher add target entry from addr %h to addr %h", $time, Addr'{lastChildRequest, '0}, addr);
if (verbose) $display("%t Prefetcher add target entry from addr %h to addr %h", $time, Addr'{lastChildRequest, '0}, addr);
targetTable.writeReq(lastChildRequest, cl);
end
lastChildRequest <= cl;
@@ -951,12 +967,12 @@ provisos(
// prefetch the stored target first
retAddr = {targetTableReadResp.first, '0};
targetTableReadResp.deq();
$display("%t Prefetcher getNextPrefetchAddr requesting target entry %h", $time, retAddr);
if (verbose) $display("%t Prefetcher getNextPrefetchAddr requesting target entry %h", $time, retAddr);
end
else begin
streams[shiftReg[0]].nextToAsk <= streams[shiftReg[0]].nextToAsk + 1;
retAddr = Addr'{streams[shiftReg[0]].nextToAsk, '0}; //extend cache line address to regular address
$display("%t Prefetcher getNextPrefetchAddr requesting %h from window idx %h", $time, retAddr, shiftReg[0]);
if (verbose) $display("%t Prefetcher getNextPrefetchAddr requesting %h from window idx %h", $time, retAddr, shiftReg[0]);
end
return retAddr;
endmethod
@@ -968,6 +984,7 @@ module mkBRAMMarkovPrefetcher(Prefetcher) provisos
NumAlias#(maxChainLength, 2),
Alias#(chainLengthT, Bit#(TLog#(TAdd#(maxChainLength,1))))
);
Bool verbose = False;
Reg#(LineAddr) lastLastChildRequest <- mkReg(0);
Reg#(LineAddr) lastChildRequest <- mkReg(0);
TargetTableBRAM#(65536, 4096) targetTable <- mkTargetTableBRAM;
@@ -978,7 +995,7 @@ module mkBRAMMarkovPrefetcher(Prefetcher) provisos
Reg#(LineAddr) chainNextToLookup <- mkReg(?);
rule sendReadReq (chainNumberToPrefetch != 0);
$display ("%t Prefetcher send read req for %h", $time, Addr'{chainNextToLookup, '0});
if (verbose) $display ("%t Prefetcher send read req for %h", $time, Addr'{chainNextToLookup, '0});
targetTable.readReq(chainNextToLookup);
endrule
@@ -990,10 +1007,10 @@ module mkBRAMMarkovPrefetcher(Prefetcher) provisos
targetTableReadResp.enq(cline);
chainNextToLookup <= cline;
chainNumberToPrefetch <= chainNumberToPrefetch - 1;
$display("%t Prefetcher found read resp data! %h", $time, Addr'{cline, '0});
if (verbose) $display("%t Prefetcher found read resp data! %h", $time, Addr'{cline, '0});
end
else begin
$display("%t Prefetcher found read resp invalid!", $time);
if (verbose) $display("%t Prefetcher found read resp invalid!", $time);
chainNumberToPrefetch <= 0;
end
endrule
@@ -1002,7 +1019,7 @@ module mkBRAMMarkovPrefetcher(Prefetcher) provisos
targetTableReadResp.deq();
let cline = targetTableReadResp.first;
Addr retAddr = {cline, '0};
$display("%t Prefetcher getNextPrefetchAddr requesting chain entry %h", $time, retAddr);
if (verbose) $display("%t Prefetcher getNextPrefetchAddr requesting chain entry %h", $time, retAddr);
return retAddr;
endmethod
@@ -1010,7 +1027,7 @@ module mkBRAMMarkovPrefetcher(Prefetcher) provisos
let cl = getLineAddr(addr);
if (hitMiss == MISS && cl != lastChildRequest) begin
//Test only tracking misses, to avoid double noise of too many requests, many to the same location
$display("%t Prefetcher report %s add target entry from addr %h to addr %h",
if (verbose) $display("%t Prefetcher report %s add target entry from addr %h to addr %h",
$time, hitMiss == HIT ? "HIT" : "MISS", Addr'{lastChildRequest, '0}, Addr'{cl, '0});
targetTable.writeReq(lastChildRequest, cl);
lastChildRequest <= cl;
@@ -1033,6 +1050,7 @@ module mkBRAMMarkovOnHitPrefetcher(Prefetcher) provisos
NumAlias#(numLastRequests, 32),
Alias#(chainLengthT, Bit#(TLog#(TAdd#(maxChainLength,1))))
);
Bool verbose = False;
Reg#(LineAddr) lastLastChildRequest <- mkReg(0);
Reg#(LineAddr) lastChildRequest <- mkReg(0);
Reg#(Vector#(numLastRequests, Bit#(32))) lastAddrRequests <- mkReg(replicate(0));
@@ -1044,7 +1062,7 @@ module mkBRAMMarkovOnHitPrefetcher(Prefetcher) provisos
Reg#(LineAddr) chainNextToLookup <- mkReg(?);
rule sendReadReq (chainNumberToPrefetch != 0);
$display ("%t Prefetcher send read req for %h", $time, Addr'{chainNextToLookup, '0});
if (verbose) $display ("%t Prefetcher send read req for %h", $time, Addr'{chainNextToLookup, '0});
targetTable.readReq(chainNextToLookup);
endrule
@@ -1056,10 +1074,10 @@ module mkBRAMMarkovOnHitPrefetcher(Prefetcher) provisos
targetTableReadResp.enq(cline);
chainNextToLookup <= cline;
chainNumberToPrefetch <= chainNumberToPrefetch - 1;
$display("%t Prefetcher found read resp data! %h", $time, Addr'{cline, '0});
if (verbose) $display("%t Prefetcher found read resp data! %h", $time, Addr'{cline, '0});
end
else begin
$display("%t Prefetcher found read resp invalid!", $time);
if (verbose) $display("%t Prefetcher found read resp invalid!", $time);
chainNumberToPrefetch <= 0;
end
endrule
@@ -1068,7 +1086,7 @@ module mkBRAMMarkovOnHitPrefetcher(Prefetcher) provisos
targetTableReadResp.deq();
let cline = targetTableReadResp.first;
Addr retAddr = {cline, '0};
$display("%t Prefetcher getNextPrefetchAddr requesting chain entry %h", $time, retAddr);
if (verbose) $display("%t Prefetcher getNextPrefetchAddr requesting chain entry %h", $time, retAddr);
return retAddr;
endmethod
@@ -1076,7 +1094,7 @@ module mkBRAMMarkovOnHitPrefetcher(Prefetcher) provisos
let cl = getLineAddr(addr);
if (hitMiss == MISS && cl != lastChildRequest) begin
//Test only tracking misses, to avoid double noise of too many requests, many to the same location
$display("%t Prefetcher report %s add target entry from addr %h to addr %h",
if (verbose) $display("%t Prefetcher report %s add target entry from addr %h to addr %h",
$time, hitMiss == HIT ? "HIT" : "MISS", Addr'{lastChildRequest, '0}, Addr'{cl, '0});
targetTable.writeReq(lastChildRequest, cl);
lastChildRequest <= cl;
@@ -1085,7 +1103,7 @@ module mkBRAMMarkovOnHitPrefetcher(Prefetcher) provisos
if (!elem(hash(cl), lastAddrRequests)) begin
//Don't start markov chain if we started a markov chain with that address recently
$display("%t Prefetcher start new chain with %h", $time, addr);
if (verbose) $display("%t Prefetcher start new chain with %h", $time, addr);
lastAddrRequests <= shiftInAt0(lastAddrRequests, hash(cl));
chainNextToLookup <= cl;
chainNumberToPrefetch <= fromInteger(valueOf(maxChainLength));
@@ -1100,6 +1118,7 @@ module mkMarkovOnHit2Prefetcher(Prefetcher) provisos
NumAlias#(numLastRequests, 32),
Alias#(chainLengthT, Bit#(TLog#(TAdd#(maxChainLength,1))))
);
Bool verbose = False;
Reg#(LineAddr) lastChildRequest <- mkReg(0);
Reg#(Vector#(numLastRequests, Bit#(32))) lastAddrRequests <- mkReg(replicate(0));
TargetTableDouble#(65536, 4096) targetTable <- mkTargetTableDouble;
@@ -1132,18 +1151,18 @@ module mkMarkovOnHit2Prefetcher(Prefetcher) provisos
retAddr = {lowPriorityPrefetches.first, '0};
lowPriorityPrefetches.deq;
end
$display("%t Prefetcher getNextPrefetchAddr requesting chain entry %h", $time, retAddr);
if (verbose) $display("%t Prefetcher getNextPrefetchAddr requesting chain entry %h", $time, retAddr);
return retAddr;
endmethod
method Action reportAccess(Addr addr, HitOrMiss hitMiss);
let cl = getLineAddr(addr);
if (hitMiss == MISS)
$display("%t Prefetcher report MISS %h", $time, addr);
if (verbose) $display("%t Prefetcher report MISS %h", $time, addr);
if (hitMiss == MISS || !elem(hash(cl), lastAddrRequests)) begin
//Don't start a markov chain if we started a markov chain with that address recently
$display("%t Prefetcher start new chain with %h", $time, addr);
if (verbose) $display("%t Prefetcher start new chain with %h", $time, addr);
targetTable.sendReadWriteReq(cl, hitMiss);
lastAddrRequests <= shiftInAt0(lastAddrRequests, hash(cl));
end
@@ -1154,29 +1173,30 @@ module mkBlockPrefetcher(Prefetcher) provisos (
NumAlias#(numLinesEachWay, 1),
Alias#(lineCountT, Bit#(TLog#(TAdd#(numLinesEachWay, 1))))
);
Bool verbose = False;
Reg#(Bool) nextIsForward <- mkReg(?);
Reg#(LineAddr) prefetchAround <- mkReg(?);
Reg#(lineCountT) linesEachWayPrefetched <- mkReg(fromInteger(valueOf(numLinesEachWay)));
method Action reportAccess(Addr addr, HitOrMiss hitMiss);
if (hitMiss == MISS) begin
$display("%t Prefetcher report MISS %h", $time, addr);
if (verbose) $display("%t Prefetcher report MISS %h", $time, addr);
nextIsForward <= True;
prefetchAround <= getLineAddr(addr);
linesEachWayPrefetched <= 0;
end
else
$display("%t Prefetcher report HIT %h", $time, addr);
if (verbose) $display("%t Prefetcher report HIT %h", $time, addr);
endmethod
method ActionValue#(Addr) getNextPrefetchAddr if (linesEachWayPrefetched != fromInteger(valueOf(numLinesEachWay)));
nextIsForward <= !nextIsForward;
if (nextIsForward) begin
Addr retAddr = {prefetchAround + (extend(linesEachWayPrefetched)+1), 0};
$display("%t Prefetcher getNextPrefetchAddr requesting forward %h", $time, retAddr);
if (verbose) $display("%t Prefetcher getNextPrefetchAddr requesting forward %h", $time, retAddr);
return retAddr;
end
else begin
Addr retAddr = {prefetchAround - (extend(linesEachWayPrefetched)+1), 0};
$display("%t Prefetcher getNextPrefetchAddr requesting backward %h", $time, retAddr);
if (verbose) $display("%t Prefetcher getNextPrefetchAddr requesting backward %h", $time, retAddr);
linesEachWayPrefetched <= linesEachWayPrefetched + 1;
return retAddr;
end
@@ -1210,11 +1230,12 @@ module mkDoNothingPCPrefetcher(PCPrefetcher);
endmodule
module mkPrintPCPrefetcher(PCPrefetcher);
Bool verbose = False;
method Action reportAccess(Addr addr, Bit#(16) pcHash, HitOrMiss hitMiss);
if (hitMiss == HIT)
$display("%t PCPrefetcher report HIT %h", $time, addr);
if (verbose) $display("%t PCPrefetcher report HIT %h", $time, addr);
else
$display("%t PCPrefetcher report MISS %h", $time, addr);
if (verbose) $display("%t PCPrefetcher report MISS %h", $time, addr);
endmethod
method ActionValue#(Addr) getNextPrefetchAddr if (False);
return 64'h0000000080000080;
@@ -1238,6 +1259,7 @@ provisos(
NumAlias#(cLinesAheadToPrefetch, 2),
Alias#(strideTableIndexT, Bit#(TLog#(strideTableSize)))
);
Bool verbose = False;
RWBramCore#(strideTableIndexT, StrideEntry) strideTable <- mkRWBramCoreForwarded;
FIFOF#(Tuple3#(Addr, Bit#(16), HitOrMiss)) memAccesses <- mkSizedBypassFIFOF(8);
Reg#(Tuple3#(Addr, Bit#(16), HitOrMiss)) rdRespEntry <- mkReg(?);
@@ -1249,7 +1271,7 @@ provisos(
rule sendReadReq if (!holdReadReq);
match {.addr, .pcHash, .hitMiss} = memAccesses.first;
$display("%t Sending read req for %h!", $time, pcHash);
if (verbose) $display("%t Sending read req for %h!", $time, pcHash);
strideTable.rdReq(truncate(pcHash));
rdRespEntry <= memAccesses.first;
memAccesses.deq;
@@ -1269,24 +1291,24 @@ provisos(
strideTable.deqRdResp;
StrideEntry seNext = se;
Bit#(13) observedStride = {1'b0, addr[11:0]} - {1'b0, se.lastAddr};
$writeh("%t Stride Prefetcher updateStrideEntry ", $time,
if (verbose) $writeh("%t Stride Prefetcher updateStrideEntry ", $time,
fshow(hitMiss), " ", addr,
". Entry ", index, " state is ", fshow(se.state));
if (se.state == EMPTY) begin
if (hitMiss == MISS) begin
seNext.lastAddr = truncate(addr);
seNext.state = INIT;
$display(", allocate entry");
if (verbose) $display(", allocate entry");
end
else begin
$display(", ignore");
if (verbose) $display(", ignore");
end
end
else if (se.state == INIT && observedStride != 0) begin
seNext.stride = observedStride;
seNext.state = TRANSIENT;
seNext.lastAddr = truncate(addr);
$display(", set stride to %h", seNext.stride);
if (verbose) $display(", set stride to %h", seNext.stride);
end
else if ((se.state == TRANSIENT || se.state == STEADY) && observedStride != 0) begin
if (observedStride == se.stride) begin
@@ -1304,17 +1326,17 @@ provisos(
end
seNext.state = STEADY;
seNext.lastAddr = truncate(addr);
$display(", stride %h is confirmed!", seNext.stride);
if (verbose) $display(", stride %h is confirmed!", seNext.stride);
end
else begin
seNext.state = TRANSIENT;
seNext.stride = observedStride;
seNext.lastAddr = truncate(addr);
$display(", old stride is broken! New stride: %h", seNext.stride);
if (verbose) $display(", old stride is broken! New stride: %h", seNext.stride);
end
end
else
$display("");
if (verbose) $display("");
strideEntryForPrefetch.enq(tuple3(seNext, addr, pcHash));
endrule
@@ -1351,11 +1373,11 @@ provisos(
// so hold off any potential read requests until we do a writeback
holdReadReq.send();
cLinesPrefetchedLatest <= Valid(cLinesPrefetched + 1);
$display("%t Stride Prefetcher getNextPrefetchAddr requesting %h for entry %h", $time, reqAddr, pcHash[7:0]);
if (verbose) $display("%t Stride Prefetcher getNextPrefetchAddr requesting %h for entry %h", $time, reqAddr, pcHash[7:0]);
end
else begin
//cant prefetch
$display("%t Stride Prefetcher no possible prefetch for entry %h", $time, strideTableIndexT'(truncate(pcHash)));
if (verbose) $display("%t Stride Prefetcher no possible prefetch for entry %h", $time, strideTableIndexT'(truncate(pcHash)));
strideEntryForPrefetch.deq;
se.cLinesPrefetched = cLinesPrefetched;
cLinesPrefetchedLatest <= Invalid;
@@ -1391,6 +1413,7 @@ provisos(
NumAlias#(cLinesAheadToPrefetch, 2), // TODO fetch more if have repeatedly hit an entry, and if stride big
Alias#(strideTableIndexT, Bit#(TLog#(strideTableSize)))
);
Bool verbose = False;
RWBramCore#(strideTableIndexT, StrideEntry2) strideTable <- mkRWBramCoreForwarded;
FIFOF#(Tuple3#(Addr, Bit#(16), HitOrMiss)) memAccesses <- mkSizedBypassFIFOF(8);
Reg#(Tuple3#(Addr, Bit#(16), HitOrMiss)) rdRespEntry <- mkReg(?);
@@ -1402,7 +1425,7 @@ provisos(
rule sendReadReq if (!holdReadReq);
match {.addr, .pcHash, .hitMiss} = memAccesses.first;
$display("%t Sending read req for %h!", $time, pcHash);
if (verbose) $display("%t Sending read req for %h!", $time, pcHash);
strideTable.rdReq(truncate(pcHash));
rdRespEntry <= memAccesses.first;
memAccesses.deq;
@@ -1422,19 +1445,19 @@ provisos(
strideTable.deqRdResp;
StrideEntry2 seNext = se;
Int#(12) observedStride = unpack(addr[11:0] - se.lastAddr);
$writeh("%t Stride Prefetcher updateStrideEntry ", $time,
if (verbose) $writeh("%t Stride Prefetcher updateStrideEntry ", $time,
fshow(hitMiss), " ", addr,
". Entry ", index, " state is ", fshow(se.state));
if (se.state == INIT && observedStride != 0) begin
if (se.stride == observedStride) begin
//fast track to steady
seNext.state = STEADY;
$display(", stride matches so fast track back to STEADY");
if (verbose) $display(", stride matches so fast track back to STEADY");
end
else begin
seNext.stride = observedStride;
seNext.state = TRANSIENT;
$display(", stride doesn't match, so set to %h", seNext.stride);
if (verbose) $display(", stride doesn't match, so set to %h", seNext.stride);
end
seNext.lastAddr = truncate(addr);
end
@@ -1443,13 +1466,13 @@ provisos(
//stride confimed, move to steady
seNext.cLinesPrefetched = 0;
seNext.state = STEADY;
$display(", stride %h is confirmed!", seNext.stride);
if (verbose) $display(", stride %h is confirmed!", seNext.stride);
end
else begin
//We're seeing random accesses, go to no pred
seNext.state = NO_PRED;
seNext.stride = observedStride;
$display(", we have a random stride (%h), go to NO_PRED", seNext.stride);
if (verbose) $display(", we have a random stride (%h), go to NO_PRED", seNext.stride);
end
seNext.lastAddr = truncate(addr);
end
@@ -1460,29 +1483,29 @@ provisos(
seNext.cLinesPrefetched =
(se.cLinesPrefetched == 0) ? 0 : se.cLinesPrefetched - 1;
end
$display(", stride %h stays confirmed!", seNext.stride);
if (verbose) $display(", stride %h stays confirmed!", seNext.stride);
end
else begin
//We jump to some other random location, so reset number of lines prefetched
seNext.cLinesPrefetched = 0;
seNext.state = INIT;
$display(", random jump (%x)! Move to INIT, don't reset stride", observedStride);
if (verbose) $display(", random jump (%x)! Move to INIT, don't reset stride", observedStride);
end
seNext.lastAddr = truncate(addr);
end
else if (se.state == NO_PRED && observedStride != 0) begin
if (observedStride == se.stride) begin
seNext.state = TRANSIENT;
$display(", have repeated stride: %h, move to TRANSIENT", seNext.stride);
if (verbose) $display(", have repeated stride: %h, move to TRANSIENT", seNext.stride);
end
else begin
seNext.stride = observedStride;
$display(", have random stride: %h", seNext.stride);
if (verbose) $display(", have random stride: %h", seNext.stride);
end
seNext.lastAddr = truncate(addr);
end
else
$display("");
if (verbose) $display("");
strideEntryForPrefetch.enq(tuple3(seNext, addr, pcHash));
endrule
@@ -1512,11 +1535,11 @@ provisos(
// so hold off any potential read requests until we do a writeback
holdReadReq.send();
cLinesPrefetchedLatest <= Valid(cLinesPrefetched + 1);
$display("%t Stride Prefetcher getNextPrefetchAddr requesting %h for entry %h", $time, reqAddr, pcHash[7:0]);
if (verbose) $display("%t Stride Prefetcher getNextPrefetchAddr requesting %h for entry %h", $time, reqAddr, pcHash[7:0]);
end
else begin
//cant prefetch
$display("%t Stride Prefetcher no possible prefetch for entry %h", $time, strideTableIndexT'(truncate(pcHash)));
if (verbose) $display("%t Stride Prefetcher no possible prefetch for entry %h", $time, strideTableIndexT'(truncate(pcHash)));
strideEntryForPrefetch.deq;
se.cLinesPrefetched = cLinesPrefetched;
cLinesPrefetchedLatest <= Invalid;
@@ -1551,6 +1574,7 @@ provisos(
NumAlias#(minConfidenceToPrefetch, 2),
Alias#(strideTableIndexT, Bit#(TLog#(strideTableSize)))
);
Bool verbose = False;
Vector#(strideTableSize, Reg#(SimpleStrideEntry)) strideTable <- replicateM(mkReg(unpack(0)));
Reg#(Addr) addrToPrefetch <- mkReg(0);
@@ -1558,11 +1582,11 @@ provisos(
Ehr#(2, Bit#(3)) prefetchesIssued <- mkEhr(fromInteger(valueOf(cLinesAheadToPrefetch)));
method Action reportAccess(Addr addr, Bit#(16) pcHash, HitOrMiss hitMiss);
$display("%t report access %x %x", $time, addr, pcHash);
if (verbose) $display("%t report access %x %x", $time, addr, pcHash);
strideTableIndexT idx = truncate(pcHash);
SimpleStrideEntry entry = strideTable[idx];
Int#(13) calc_stride = unpack(truncate(addr - entry.lastAddr));
$display("found stride %x", entry.stride);
if (verbose) $display("found stride %x", entry.stride);
entry.lastAddr = addr;
if (calc_stride == entry.stride) begin
if (entry.confidence != 2'd3) begin
@@ -1601,7 +1625,7 @@ provisos(
(pack(signExtend(strideToUse)) * zeroExtend(prefetchesIssued[0] + 1));
check(reqAddr[63:12] == addrToPrefetch[63:12]);
$display("%t getprefetchaddr ret %x", $time, reqAddr);
if (verbose) $display("%t getprefetchaddr ret %x", $time, reqAddr);
return reqAddr;
endmethod
@@ -1627,6 +1651,7 @@ provisos(
NumAlias#(cLinesBigStridePrefetchMax, 5),
Alias#(strideTableIndexT, Bit#(TLog#(strideTableSize)))
);
Bool verbose = False;
RWBramCore#(strideTableIndexT, StrideEntryAdaptive) strideTable <- mkRWBramCoreForwarded;
FIFOF#(Tuple3#(Addr, Bit#(16), HitOrMiss)) memAccesses <- mkSizedBypassFIFOF(8);
Reg#(Tuple3#(Addr, Bit#(16), HitOrMiss)) rdRespEntry <- mkReg(?);
@@ -1681,7 +1706,7 @@ provisos(
rule sendReadReq if (!holdReadReq);
match {.addr, .pcHash, .hitMiss} = memAccesses.first;
$display("%t Sending read req for %h!", $time, pcHash);
if (verbose) $display("%t Sending read req for %h!", $time, pcHash);
strideTable.rdReq(truncate(pcHash));
rdRespEntry <= memAccesses.first;
memAccesses.deq;
@@ -1701,36 +1726,36 @@ provisos(
strideTable.deqRdResp;
StrideEntryAdaptive seNext = se;
Bit#(13) observedStride = {1'b0, addr[11:0]} - {1'b0, se.lastAddr};
$writeh("%t Stride Prefetcher updateStrideEntry ", $time,
if (verbose) $writeh("%t Stride Prefetcher updateStrideEntry ", $time,
fshow(hitMiss), " ", addr,
". Entry ", index, " state is ", fshow(se.state));
if (se.state == EMPTY) begin
if (hitMiss == MISS) begin
seNext.lastAddr = truncate(addr);
seNext.state = INIT;
$display(", allocate entry");
if (verbose) $display(", allocate entry");
end
else begin
$display(", ignore");
if (verbose) $display(", ignore");
end
end
else if (se.state == INIT && observedStride != 0) begin
seNext.stride = observedStride;
seNext.state = TRANSIENT;
seNext.lastAddr = truncate(addr);
$display(", set stride to %h", seNext.stride);
if (verbose) $display(", set stride to %h", seNext.stride);
end
else if (se.state == TRANSIENT && observedStride != 0) begin
if (observedStride == se.stride) begin
//Here we transition from TRANSIENT to STEADY, so init this field
seNext.cLinesPrefetched = 0;
seNext.state = STEADY1;
$display(", stride %h is confirmed!", seNext.stride);
if (verbose) $display(", stride %h is confirmed!", seNext.stride);
end
else begin
seNext.state = TRANSIENT;
seNext.stride = observedStride;
$display(", old stride is broken! New stride: %h", seNext.stride);
if (verbose) $display(", old stride is broken! New stride: %h", seNext.stride);
end
seNext.lastAddr = truncate(addr);
end
@@ -1742,23 +1767,23 @@ provisos(
(se.cLinesPrefetched == 0) ? 0 : se.cLinesPrefetched - 1;
end
seNext.state = incrementSteady(se.state);
$display(", stride %h is sustained, advance STEADY number!", se.stride);
if (verbose) $display(", stride %h is sustained, advance STEADY number!", se.stride);
end
else if (se.state == STEADY4 || se.state == STEADYLAST) begin
//Leniency towards some stride changes
seNext.state = STEADY1;
seNext.cLinesPrefetched = 0; //We've jumped to some other address, so start fetching again!
$display(", old stride is broken, but tolerate it! Keep old stride: %h", se.stride);
if (verbose) $display(", old stride is broken, but tolerate it! Keep old stride: %h", se.stride);
end
else begin
seNext.state = TRANSIENT;
seNext.stride = observedStride;
$display(", old stride is broken! New stride: %h", seNext.stride);
if (verbose) $display(", old stride is broken! New stride: %h", seNext.stride);
end
seNext.lastAddr = truncate(addr);
end
else
$display("");
if (verbose) $display("");
strideEntryForPrefetch.enq(tuple3(seNext, addr, pcHash));
endrule
@@ -1795,11 +1820,11 @@ provisos(
// so hold off any potential read requests until we do a writeback
holdReadReq.send();
cLinesPrefetchedLatest <= Valid(cLinesPrefetched + 1);
$display("%t Stride Prefetcher getNextPrefetchAddr requesting %h for entry %h", $time, reqAddr, pcHash[7:0]);
if (verbose) $display("%t Stride Prefetcher getNextPrefetchAddr requesting %h for entry %h", $time, reqAddr, pcHash[7:0]);
end
else begin
//cant prefetch
$display("%t Stride Prefetcher no possible prefetch for entry %h", $time, strideTableIndexT'(truncate(pcHash)));
if (verbose) $display("%t Stride Prefetcher no possible prefetch for entry %h", $time, strideTableIndexT'(truncate(pcHash)));
strideEntryForPrefetch.deq;
se.cLinesPrefetched = cLinesPrefetched;
cLinesPrefetchedLatest <= Invalid;
@@ -1830,6 +1855,7 @@ module mkPrefetcherVector#(module#(Prefetcher) mkPrefetcher)
) provisos (
Alias#(idxT, Bit#(TLog#(size)))
);
Bool verbose = False;
Vector#(size, Prefetcher) prefetchers <- replicateM(mkPrefetcher);
Fifo#(1, Tuple2#(Addr, idxT)) prefetchRq <- mkBypassFifo;