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Implemented what I think is the last required change for the lsu state machine.

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This commit is contained in:
Ross Thompson 2021-12-19 17:57:12 -06:00
parent fe5c05eb8d
commit eceb418056
1 changed files with 4 additions and 3 deletions
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7
wally-pipelined/src/lsu/lsu.sv
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@ -222,8 +222,8 @@ module lsu
// signal to CPU it needs to wait on HPTW. // signal to CPU it needs to wait on HPTW.
assign InterlockStall_BUG = (CurrState == STATE_T0_READY & (DTLBMissM | ITLBMissF)) | assign InterlockStall_BUG = (CurrState == STATE_T0_READY & (DTLBMissM | ITLBMissF)) |
(CurrState == STATE_T3_DTLB_MISS & ~WalkerPageFaultM) | (CurrState == STATE_T4_ITLB_MISS & ~WalkerInstrPageFaultF) | (CurrState == STATE_T3_DTLB_MISS & ~WalkerPageFaultM) | (CurrState == STATE_T4_ITLB_MISS & ~WalkerInstrPageFaultRaw) |
(CurrState == STATE_T5_ITLB_MISS & ~WalkerInstrPageFaultF) | (CurrState == STATE_T7_DITLB_MISS & ~WalkerPageFaultM); (CurrState == STATE_T5_ITLB_MISS & ~WalkerInstrPageFaultRaw) | (CurrState == STATE_T7_DITLB_MISS & ~WalkerPageFaultM);
assign InterlockStall = InterlockStall_BUG === 1'bx ? 1'b0 : InterlockStall_BUG; assign InterlockStall = InterlockStall_BUG === 1'bx ? 1'b0 : InterlockStall_BUG;
@ -234,6 +234,7 @@ module lsu
(CurrState == STATE_T5_ITLB_MISS) | (CurrState == STATE_T7_DITLB_MISS); (CurrState == STATE_T5_ITLB_MISS) | (CurrState == STATE_T7_DITLB_MISS);
assign IgnoreRequest = CurrState == STATE_T0_READY & (ITLBMissF | DTLBMissM); assign IgnoreRequest = CurrState == STATE_T0_READY & (ITLBMissF | DTLBMissM);
assign WalkerInstrPageFaultF = WalkerInstrPageFaultRaw | CurrState == STATE_T0_FAULT_REPLAY;
flopenrc #(`XLEN) AddressMReg(clk, reset, FlushM, ~StallM, IEUAdrE, IEUAdrM); flopenrc #(`XLEN) AddressMReg(clk, reset, FlushM, ~StallM, IEUAdrE, IEUAdrM);
@ -259,7 +260,7 @@ module lsu
.HPTWStall, .HPTWStall,
.AnyCPUReqM, .AnyCPUReqM,
.MemAfterIWalkDone, .MemAfterIWalkDone,
.WalkerInstrPageFaultF(WalkerInstrPageFaultF), .WalkerInstrPageFaultF(WalkerInstrPageFaultRaw),
.WalkerLoadPageFaultM(WalkerLoadPageFaultM), .WalkerLoadPageFaultM(WalkerLoadPageFaultM),
.WalkerStorePageFaultM(WalkerStorePageFaultM)); .WalkerStorePageFaultM(WalkerStorePageFaultM));