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Does not work. But there is a bug hiding the IgnoreRequest confusion.

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This commit is contained in:
Rose Thompson 2024-10-11 12:07:26 -05:00
parent 6a905aa2f2
commit fe5f342d2f
2 changed files with 3 additions and 3 deletions
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4
src/lsu/lsu.sv
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@ -342,7 +342,7 @@ module lsu import cvw::*; #(parameter cvw_t P) (
.FetchBuffer, .CacheBusRW(CacheBusRWTemp),
.CacheBusAck(DCacheBusAck), .InvalidateCache(1'b0), .CMOpM(CacheCMOpM));
assign DCacheStallM = CacheStall & ~IgnoreRequestTLB;
assign DCacheStallM = CacheStall;
assign CacheBusRW = CacheBusRWTemp;
ahbcacheinterface #(.P(P), .BEATSPERLINE(BEATSPERLINE), .AHBWLOGBWPL(AHBWLOGBWPL), .LINELEN(LINELEN), .LLENPOVERAHBW(LLENPOVERAHBW), .READ_ONLY_CACHE(0)) ahbcacheinterface(
@ -386,7 +386,7 @@ module lsu import cvw::*; #(parameter cvw_t P) (
assign {DCacheStallM, DCacheCommittedM} = '0;
end
assign LSUBusStallM = BusStall & ~IgnoreRequestTLB;
assign LSUBusStallM = BusStall;
/////////////////////////////////////////////////////////////////////////////////////////////
// Atomic operations

2
src/mmu/hptw.sv
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@ -300,7 +300,7 @@ module hptw import cvw::*; #(parameter cvw_t P) (
default: NextWalkerState = IDLE; // Should never be reached
endcase // case (WalkerState)
assign IgnoreRequestTLB = (WalkerState == IDLE & TLBMissOrUpdateDA) | (HPTWFaultM); // If hptw request has pmp/a fault suppress bus access.
assign IgnoreRequestTLB = (WalkerState == IDLE & TLBMissOrUpdateDA) | (WalkerState != IDLE & HPTWFaultM); // If hptw request has pmp/a fault suppress bus access.
assign SelHPTW = WalkerState != IDLE;
assign HPTWStall = (WalkerState != IDLE & WalkerState != FAULT) | (WalkerState == IDLE & TLBMissOrUpdateDA);