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Continued fixing fsm to work right with svmode

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Kip Macsai-Goren 2021-06-22 13:29:49 -04:00
parent 3e19eba20d
commit 2c41da0275
1 changed files with 6 additions and 4 deletions
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6
wally-pipelined/src/mmu/pagetablewalker.sv
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@ -263,10 +263,12 @@ module pagetablewalker (
else if (ValidPTE && LeafPTE && ~AccessAlert) NextWalkerState = LEAF; else if (ValidPTE && LeafPTE && ~AccessAlert) NextWalkerState = LEAF;
else NextWalkerState = FAULT; else NextWalkerState = FAULT;
LEAF: if (MMUTranslate) NextWalkerState = LEVEL3; LEAF: if (MMUTranslate && SvMode == `SV48) NextWalkerState = LEVEL3;
else if (MMUTranslate && SvMode == `SV39) NextWalkerState = LEVEL2;
else NextWalkerState = IDLE; else NextWalkerState = IDLE;
FAULT: if (MMUTranslate) NextWalkerState = LEVEL3; FAULT: if (MMUTranslate && SvMode == `SV48) NextWalkerState = LEVEL3;
else if (MMUTranslate && SvMode == `SV39) NextWalkerState = LEVEL2;
else NextWalkerState = IDLE; else NextWalkerState = IDLE;
// Default case should never happen, but is included for linter. // Default case should never happen, but is included for linter.
default: NextWalkerState = IDLE; default: NextWalkerState = IDLE;