Cleaned up names in lsuvirtmem.

pipelined/src/lsu/lsuvirtmen.sv

@@ -75,13 +75,15 @@ module lsuvirtmem(
   logic [2:0]                 HPTWSize;
   logic                       SelReplayCPURequest;
   logic [11:0]                PreLSUAdrE;  
-  logic                       ITLBMissOrDAFaultF;
-  logic                       DTLBMissOrDAFaultM;  
+  logic                       ITLBMissOrDAFaultF, ITLBMissOrDAFaultNoTrapF;
+  logic                       DTLBMissOrDAFaultM, DTLBMissOrDAFaultNoTrapM;  
   logic                       HPTWWrite;
 
   assign AnyCPUReqM = (|MemRWM) | (|AtomicM);
   assign ITLBMissOrDAFaultF = ITLBMissF | (`HPTW_WRITES_SUPPORTED & InstrDAPageFaultF);
   assign DTLBMissOrDAFaultM = DTLBMissM | (`HPTW_WRITES_SUPPORTED & DataDAPageFaultM);  
+  assign ITLBMissOrDAFaultNoTrapF = ITLBMissOrDAFaultF & ~TrapM;
+  assign DTLBMissOrDAFaultNoTrapM = DTLBMissOrDAFaultM & ~TrapM;
   interlockfsm interlockfsm (
     .clk, .reset, .AnyCPUReqM, .ITLBMissOrDAFaultF, .ITLBWriteF,
     .DTLBMissOrDAFaultM, .DTLBWriteM, .TrapM, .DCacheStallM,
@@ -89,7 +91,7 @@ module lsuvirtmem(
   hptw hptw( // *** remove logic from (), mention this in style guide CH3
     .clk, .reset, .SATP_REGW, .PCF, .IEUAdrExtM, .MemRWM, .AtomicM,
     .STATUS_MXR, .STATUS_SUM, .STATUS_MPRV, .STATUS_MPP, .PrivilegeModeW,
-    .ITLBMissF(ITLBMissOrDAFaultF & ~TrapM), .DTLBMissM(DTLBMissOrDAFaultM & ~TrapM), // *** Fix me.  *** I'm not sure ITLBMiss should be suppressed on TrapM.
+    .ITLBMissOrDAFaultNoTrapF, .DTLBMissOrDAFaultNoTrapM,
     .PTE, .PageType, .ITLBWriteF, .DTLBWriteM, .HPTWReadPTE(ReadDataM),
     .DCacheStallM, .HPTWAdr, .HPTWRead, .HPTWWrite, .HPTWSize);
 

pipelined/src/mmu/hptw.sv

@@ -41,7 +41,7 @@ module hptw
    input logic                 STATUS_MXR, STATUS_SUM, STATUS_MPRV,
    input logic [1:0]           STATUS_MPP,
    input logic [1:0]           PrivilegeModeW,
-   (* mark_debug = "true" *) input logic ITLBMissF, DTLBMissM, // TLB Miss
+   (* mark_debug = "true" *) input logic ITLBMissOrDAFaultNoTrapF, DTLBMissOrDAFaultNoTrapM, // TLB Miss
    input logic [`XLEN-1:0]     HPTWReadPTE, // page table entry from LSU
    input logic                 DCacheStallM, // stall from LSU
    output logic [`XLEN-1:0]    PTE, // page table entry to TLBs
@@ -82,14 +82,14 @@ module hptw
 	// Extract bits from CSRs and inputs
 	assign SvMode = SATP_REGW[`XLEN-1:`XLEN-`SVMODE_BITS];
 	assign BasePageTablePPN = SATP_REGW[`PPN_BITS-1:0];
-	assign TLBMiss = (DTLBMissM | ITLBMissF);
+	assign TLBMiss = (DTLBMissOrDAFaultNoTrapM | ITLBMissOrDAFaultNoTrapF);
 
 	// Determine which address to translate
 	assign TranslationVAdr = DTLBWalk ? IEUAdrExtM[`XLEN-1:0] : PCF;
 	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, DTLBMissOrDAFaultNoTrapM, DTLBWalk); // when walk begins, record whether it was for DTLB (or record 0 for ITLB)
 	assign PRegEn = HPTWRead & ~DCacheStallM;
   
 	flopenr #(`XLEN) PTEReg(clk, reset, PRegEn | UpdatePTE, NextPTE, PTE); // Capture page table entry from data cache