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make Cache Flush Logic dependent on !READ_ONLY_CACHE

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read-only caches do not have flush logic since they do not have to
deal with dirty bits.
This commit is contained in:
Alec Vercruysse 2023-04-05 11:45:26 -07:00
parent 247af17b6b
commit d3a988c96c
1 changed files with 18 additions and 12 deletions
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6
src/cache/cache.sv vendored
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@ -188,6 +188,7 @@ module cache #(parameter LINELEN, NUMLINES, NUMWAYS, LOGBWPL, WORDLEN, MUXINTE
// Flush logic // Flush logic
///////////////////////////////////////////////////////////////////////////////////////////// /////////////////////////////////////////////////////////////////////////////////////////////
if (!READ_ONLY_CACHE) begin:flushlogic
// Flush address (line number) // Flush address (line number)
assign ResetOrFlushCntRst = reset | FlushCntRst; assign ResetOrFlushCntRst = reset | FlushCntRst;
flopenr #(SETLEN) FlushAdrReg(clk, ResetOrFlushCntRst, FlushAdrCntEn, FlushAdrP1, NextFlushAdr); flopenr #(SETLEN) FlushAdrReg(clk, ResetOrFlushCntRst, FlushAdrCntEn, FlushAdrP1, NextFlushAdr);
@ -200,6 +201,11 @@ module cache #(parameter LINELEN, NUMLINES, NUMWAYS, LOGBWPL, WORDLEN, MUXINTE
if(NUMWAYS > 1) assign NextFlushWay = {FlushWay[NUMWAYS-2:0], FlushWay[NUMWAYS-1]}; if(NUMWAYS > 1) assign NextFlushWay = {FlushWay[NUMWAYS-2:0], FlushWay[NUMWAYS-1]};
else assign NextFlushWay = FlushWay[NUMWAYS-1]; else assign NextFlushWay = FlushWay[NUMWAYS-1];
assign FlushWayFlag = FlushWay[NUMWAYS-1]; assign FlushWayFlag = FlushWay[NUMWAYS-1];
end // block: flushlogic
else begin:flushlogic
assign FlushWayFlag = 0;
assign FlushAdrFlag = 0;
end
///////////////////////////////////////////////////////////////////////////////////////////// /////////////////////////////////////////////////////////////////////////////////////////////
// Cache FSM // Cache FSM