diff --git a/wally-pipelined/src/mmu/pagetablewalker.sv b/wally-pipelined/src/mmu/pagetablewalker.sv index 1c4b75252..3c377980b 100644 --- a/wally-pipelined/src/mmu/pagetablewalker.sv +++ b/wally-pipelined/src/mmu/pagetablewalker.sv @@ -82,7 +82,7 @@ module pagetablewalker assign CurrentPPN = PTE[`PPN_BITS+9:10]; // State flops -= flopenr #(1) TLBMissMReg(clk, reset, StartWalk, DTLBMissM, DTLBWalk); // when walk begins, record whether it was for DTLB (or record 0 for ITLB) + flopenr #(1) TLBMissMReg(clk, reset, StartWalk, DTLBMissM, DTLBWalk); // when walk begins, record whether it was for DTLB (or record 0 for ITLB) flopenr #(`XLEN) PTEReg(clk, reset, PRegEn, HPTWReadPTE, PTE); // Capture page table entry from data cache // Assign PTE descriptors common across all XLEN values @@ -95,8 +95,8 @@ module pagetablewalker // Enable and select signals based on states assign StartWalk = (WalkerState == IDLE) & TLBMiss; - assign PRegEn = (NextWalkerState == LEVEL3) | (NextWalkerState == LEVEL2) | (NextWalkerState == LEVEL1) | (NextWalkerState == LEVEL0); assign HPTWRead = (WalkerState == LEVEL3_READ) | (WalkerState == LEVEL2_READ) | (WalkerState == LEVEL1_READ) | (WalkerState == LEVEL0_READ); + assign PRegEn = HPTWRead & ~HPTWStall; assign SelPTW = (WalkerState != IDLE) & (WalkerState != FAULT); assign DTLBWriteM = (WalkerState == LEAF) & DTLBWalk; assign ITLBWriteF = (WalkerState == LEAF) & ~DTLBWalk;