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Possible start to resolution on issue #839.

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This commit is contained in:
Rose Thompson 2024-10-10 17:14:27 -05:00
parent d15500256d
commit 6a905aa2f2
1 changed files with 8 additions and 8 deletions
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16
src/mmu/hptw.sv
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@ -274,23 +274,23 @@ module hptw import cvw::*; #(parameter cvw_t P) (
IDLE: if (TLBMissOrUpdateDA) NextWalkerState = InitialWalkerState;
else NextWalkerState = IDLE;
L3_ADR: NextWalkerState = L3_RD; // First access in SV48
L3_RD: if (DCacheBusStallM) NextWalkerState = L3_RD;
else if (HPTWFaultM) NextWalkerState = FAULT;
L3_RD: if (HPTWFaultM) NextWalkerState = FAULT;
else if (DCacheBusStallM) NextWalkerState = L3_RD;
else NextWalkerState = L2_ADR;
L2_ADR: if (InitialWalkerState == L2_ADR | ValidNonLeafPTE) NextWalkerState = L2_RD; // First access in SV39
else NextWalkerState = LEAF;
L2_RD: if (DCacheBusStallM) NextWalkerState = L2_RD;
else if (HPTWFaultM) NextWalkerState = FAULT;
L2_RD: if (HPTWFaultM) NextWalkerState = FAULT;
else if (DCacheBusStallM) NextWalkerState = L2_RD;
else NextWalkerState = L1_ADR;
L1_ADR: if (InitialWalkerState == L1_ADR | ValidNonLeafPTE) NextWalkerState = L1_RD; // First access in SV32
else NextWalkerState = LEAF;
L1_RD: if (DCacheBusStallM) NextWalkerState = L1_RD;
else if (HPTWFaultM) NextWalkerState = FAULT;
L1_RD: if (HPTWFaultM) NextWalkerState = FAULT;
else if (DCacheBusStallM) NextWalkerState = L1_RD;
else NextWalkerState = L0_ADR;
L0_ADR: if (ValidNonLeafPTE) NextWalkerState = L0_RD;
else NextWalkerState = LEAF;
L0_RD: if (DCacheBusStallM) NextWalkerState = L0_RD;
else if (HPTWFaultM) NextWalkerState = FAULT;
L0_RD: if (HPTWFaultM) NextWalkerState = FAULT;
else if (DCacheBusStallM) NextWalkerState = L0_RD;
else NextWalkerState = LEAF;
LEAF: if (P.SVADU_SUPPORTED & HPTWUpdateDA) NextWalkerState = UPDATE_PTE;
else NextWalkerState = IDLE;