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OMG. It's working!

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This commit is contained in:
Ross Thompson 2021-07-01 17:37:53 -05:00
parent 9139cd2954
commit 3dae02818c
4 changed files with 141 additions and 142 deletions
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103
wally-pipelined/regression/wave.do
View File

@ -7,37 +7,37 @@ add wave -noupdate -expand -group {Execution Stage} /testbench/FunctionName/Func
add wave -noupdate -expand -group {Execution Stage} /testbench/dut/hart/ifu/PCE
add wave -noupdate -expand -group {Execution Stage} /testbench/InstrEName
add wave -noupdate -expand -group {Execution Stage} /testbench/dut/hart/ifu/InstrE
add wave -noupdate -group HDU -group traps /testbench/dut/hart/priv/trap/InstrMisalignedFaultM
add wave -noupdate -group HDU -group traps /testbench/dut/hart/priv/trap/InstrAccessFaultM
add wave -noupdate -group HDU -group traps /testbench/dut/hart/priv/trap/IllegalInstrFaultM
add wave -noupdate -group HDU -group traps /testbench/dut/hart/priv/trap/BreakpointFaultM
add wave -noupdate -group HDU -group traps /testbench/dut/hart/priv/trap/LoadMisalignedFaultM
add wave -noupdate -group HDU -group traps /testbench/dut/hart/priv/trap/StoreMisalignedFaultM
add wave -noupdate -group HDU -group traps /testbench/dut/hart/priv/trap/LoadAccessFaultM
add wave -noupdate -group HDU -group traps /testbench/dut/hart/priv/trap/StoreAccessFaultM
add wave -noupdate -group HDU -group traps /testbench/dut/hart/priv/trap/EcallFaultM
add wave -noupdate -group HDU -group traps /testbench/dut/hart/priv/trap/InstrPageFaultM
add wave -noupdate -group HDU -group traps /testbench/dut/hart/priv/trap/LoadPageFaultM
add wave -noupdate -group HDU -group traps /testbench/dut/hart/priv/trap/StorePageFaultM
add wave -noupdate -group HDU -group traps /testbench/dut/hart/priv/trap/InterruptM
add wave -noupdate -group HDU -expand -group hazards /testbench/dut/hart/hzu/BPPredWrongE
add wave -noupdate -group HDU -expand -group hazards /testbench/dut/hart/hzu/CSRWritePendingDEM
add wave -noupdate -group HDU -expand -group hazards /testbench/dut/hart/hzu/RetM
add wave -noupdate -group HDU -expand -group hazards /testbench/dut/hart/hzu/TrapM
add wave -noupdate -group HDU -expand -group hazards /testbench/dut/hart/hzu/LoadStallD
add wave -noupdate -group HDU -expand -group hazards /testbench/dut/hart/hzu/ICacheStallF
add wave -noupdate -group HDU -expand -group hazards /testbench/dut/hart/hzu/DCacheStall
add wave -noupdate -group HDU -expand -group hazards /testbench/dut/hart/MulDivStallD
add wave -noupdate -group HDU -group Flush -color Yellow /testbench/dut/hart/hzu/FlushF
add wave -noupdate -group HDU -group Flush -color Yellow /testbench/dut/hart/FlushD
add wave -noupdate -group HDU -group Flush -color Yellow /testbench/dut/hart/FlushE
add wave -noupdate -group HDU -group Flush -color Yellow /testbench/dut/hart/FlushM
add wave -noupdate -group HDU -group Flush -color Yellow /testbench/dut/hart/FlushW
add wave -noupdate -group HDU -expand -group Stall -color Orange /testbench/dut/hart/StallF
add wave -noupdate -group HDU -expand -group Stall -color Orange /testbench/dut/hart/StallD
add wave -noupdate -group HDU -expand -group Stall -color Orange /testbench/dut/hart/StallE
add wave -noupdate -group HDU -expand -group Stall -color Orange /testbench/dut/hart/StallM
add wave -noupdate -group HDU -expand -group Stall -color Orange /testbench/dut/hart/StallW
add wave -noupdate -expand -group HDU -expand -group traps /testbench/dut/hart/priv/trap/InstrMisalignedFaultM
add wave -noupdate -expand -group HDU -expand -group traps /testbench/dut/hart/priv/trap/InstrAccessFaultM
add wave -noupdate -expand -group HDU -expand -group traps /testbench/dut/hart/priv/trap/IllegalInstrFaultM
add wave -noupdate -expand -group HDU -expand -group traps /testbench/dut/hart/priv/trap/BreakpointFaultM
add wave -noupdate -expand -group HDU -expand -group traps /testbench/dut/hart/priv/trap/LoadMisalignedFaultM
add wave -noupdate -expand -group HDU -expand -group traps /testbench/dut/hart/priv/trap/StoreMisalignedFaultM
add wave -noupdate -expand -group HDU -expand -group traps /testbench/dut/hart/priv/trap/LoadAccessFaultM
add wave -noupdate -expand -group HDU -expand -group traps /testbench/dut/hart/priv/trap/StoreAccessFaultM
add wave -noupdate -expand -group HDU -expand -group traps /testbench/dut/hart/priv/trap/EcallFaultM
add wave -noupdate -expand -group HDU -expand -group traps /testbench/dut/hart/priv/trap/InstrPageFaultM
add wave -noupdate -expand -group HDU -expand -group traps /testbench/dut/hart/priv/trap/LoadPageFaultM
add wave -noupdate -expand -group HDU -expand -group traps /testbench/dut/hart/priv/trap/StorePageFaultM
add wave -noupdate -expand -group HDU -expand -group traps /testbench/dut/hart/priv/trap/InterruptM
add wave -noupdate -expand -group HDU -expand -group hazards /testbench/dut/hart/hzu/BPPredWrongE
add wave -noupdate -expand -group HDU -expand -group hazards /testbench/dut/hart/hzu/CSRWritePendingDEM
add wave -noupdate -expand -group HDU -expand -group hazards /testbench/dut/hart/hzu/RetM
add wave -noupdate -expand -group HDU -expand -group hazards /testbench/dut/hart/hzu/TrapM
add wave -noupdate -expand -group HDU -expand -group hazards /testbench/dut/hart/hzu/LoadStallD
add wave -noupdate -expand -group HDU -expand -group hazards /testbench/dut/hart/hzu/ICacheStallF
add wave -noupdate -expand -group HDU -expand -group hazards /testbench/dut/hart/hzu/DCacheStall
add wave -noupdate -expand -group HDU -expand -group hazards /testbench/dut/hart/MulDivStallD
add wave -noupdate -expand -group HDU -group Flush -color Yellow /testbench/dut/hart/hzu/FlushF
add wave -noupdate -expand -group HDU -group Flush -color Yellow /testbench/dut/hart/FlushD
add wave -noupdate -expand -group HDU -group Flush -color Yellow /testbench/dut/hart/FlushE
add wave -noupdate -expand -group HDU -group Flush -color Yellow /testbench/dut/hart/FlushM
add wave -noupdate -expand -group HDU -group Flush -color Yellow /testbench/dut/hart/FlushW
add wave -noupdate -expand -group HDU -expand -group Stall -color Orange /testbench/dut/hart/StallF
add wave -noupdate -expand -group HDU -expand -group Stall -color Orange /testbench/dut/hart/StallD
add wave -noupdate -expand -group HDU -expand -group Stall -color Orange /testbench/dut/hart/StallE
add wave -noupdate -expand -group HDU -expand -group Stall -color Orange /testbench/dut/hart/StallM
add wave -noupdate -expand -group HDU -expand -group Stall -color Orange /testbench/dut/hart/StallW
add wave -noupdate -group Bpred -color Orange /testbench/dut/hart/ifu/bpred/bpred/Predictor/DirPredictor/GHR
add wave -noupdate -group Bpred -expand -group {branch update selection inputs} /testbench/dut/hart/ifu/bpred/bpred/Predictor/DirPredictor/BPPredF
add wave -noupdate -group Bpred -expand -group {branch update selection inputs} {/testbench/dut/hart/ifu/bpred/bpred/Predictor/DirPredictor/InstrClassE[0]}
@ -299,6 +299,8 @@ add wave -noupdate -expand -group ptwalker -color Gold /testbench/dut/hart/paget
add wave -noupdate -expand -group ptwalker -color Salmon /testbench/dut/hart/pagetablewalker/HPTWStall
add wave -noupdate -expand -group ptwalker /testbench/dut/hart/pagetablewalker/HPTWRead
add wave -noupdate -expand -group ptwalker /testbench/dut/hart/pagetablewalker/MMUPAdr
add wave -noupdate -expand -group ptwalker /testbench/dut/hart/pagetablewalker/MMUStall
add wave -noupdate -expand -group ptwalker /testbench/dut/hart/pagetablewalker/EndWalk
add wave -noupdate -expand -group ptwalker -expand -group pte /testbench/dut/hart/pagetablewalker/MMUReadPTE
add wave -noupdate -expand -group ptwalker -expand -group pte /testbench/dut/hart/pagetablewalker/PRegEn
add wave -noupdate -expand -group ptwalker -expand -group pte /testbench/dut/hart/pagetablewalker/CurrentPTE
@ -318,17 +320,17 @@ add wave -noupdate -expand -group ptwalker -group {fsm outputs} /testbench/dut/h
add wave -noupdate -expand -group ptwalker -group {fsm outputs} /testbench/dut/hart/pagetablewalker/MMUStall
add wave -noupdate -expand -group ptwalker -group {fsm outputs} /testbench/dut/hart/pagetablewalker/EndWalk
add wave -noupdate -expand -group ptwalker /testbench/dut/hart/pagetablewalker/MMUPAdr
add wave -noupdate -group {LSU ARB} -color Gold /testbench/dut/hart/arbiter/CurrState
add wave -noupdate -group {LSU ARB} /testbench/dut/hart/arbiter/SelPTW
add wave -noupdate -group {LSU ARB} -expand -group hptw /testbench/dut/hart/arbiter/HPTWTranslate
add wave -noupdate -group {LSU ARB} -expand -group hptw /testbench/dut/hart/arbiter/HPTWRead
add wave -noupdate -group {LSU ARB} -expand -group hptw /testbench/dut/hart/arbiter/HPTWPAdr
add wave -noupdate -group {LSU ARB} -expand -group hptw /testbench/dut/hart/arbiter/HPTWReadPTE
add wave -noupdate -group {LSU ARB} -expand -group hptw /testbench/dut/hart/arbiter/HPTWReady
add wave -noupdate -group {LSU ARB} -expand -group toLSU /testbench/dut/hart/arbiter/MemAdrMtoLSU
add wave -noupdate -expand -group {LSU ARB} -color Gold /testbench/dut/hart/arbiter/CurrState
add wave -noupdate -expand -group {LSU ARB} -color {Medium Orchid} /testbench/dut/hart/arbiter/SelPTW
add wave -noupdate -expand -group {LSU ARB} /testbench/dut/hart/pagetablewalker/MMUStall
add wave -noupdate -expand -group {LSU ARB} -expand -group hptw /testbench/dut/hart/arbiter/HPTWTranslate
add wave -noupdate -expand -group {LSU ARB} -expand -group hptw /testbench/dut/hart/arbiter/HPTWRead
add wave -noupdate -expand -group {LSU ARB} -expand -group hptw /testbench/dut/hart/arbiter/HPTWPAdr
add wave -noupdate -expand -group {LSU ARB} -expand -group hptw /testbench/dut/hart/arbiter/HPTWReadPTE
add wave -noupdate -expand -group {LSU ARB} -expand -group hptw /testbench/dut/hart/arbiter/HPTWReady
add wave -noupdate -expand -group {LSU ARB} -group toLSU /testbench/dut/hart/arbiter/MemAdrMtoLSU
add wave -noupdate /testbench/dut/hart/lsu/DataStall
add wave -noupdate -group csr /testbench/dut/hart/priv/csr/MIP_REGW
add wave -noupdate /testbench/dut/uncore/genblk2/plic/ExtIntM
add wave -noupdate -group uart /testbench/dut/uncore/genblk4/uart/HCLK
add wave -noupdate -group uart /testbench/dut/uncore/genblk4/uart/HRESETn
add wave -noupdate -group uart /testbench/dut/uncore/genblk4/uart/HSELUART
@ -351,8 +353,8 @@ add wave -noupdate -group uart -expand -group outputs /testbench/dut/uncore/genb
add wave -noupdate -group uart -expand -group outputs /testbench/dut/uncore/genblk4/uart/INTR
add wave -noupdate -group uart -expand -group outputs /testbench/dut/uncore/genblk4/uart/TXRDYb
add wave -noupdate -group uart -expand -group outputs /testbench/dut/uncore/genblk4/uart/RXRDYb
add wave -noupdate -expand -group dtlb /testbench/dut/hart/lsu/dmmu/TLBMiss
add wave -noupdate -expand -group dtlb /testbench/dut/hart/lsu/dmmu/tlb/TLBWrite
add wave -noupdate -group dtlb /testbench/dut/hart/lsu/dmmu/TLBMiss
add wave -noupdate -group dtlb /testbench/dut/hart/lsu/dmmu/tlb/TLBWrite
add wave -noupdate -group itlb /testbench/dut/hart/ifu/ITLBMissF
add wave -noupdate /testbench/dut/hart/pagetablewalker/StartWalk
add wave -noupdate /testbench/dut/hart/lsu/dmmu/tlb/DisableTranslation
@ -364,20 +366,9 @@ add wave -noupdate -group tlbread /testbench/dut/hart/lsu/dmmu/tlb/tlbcam/Virtua
add wave -noupdate -group tlbwrite /testbench/dut/hart/lsu/dmmu/tlb/tlbcam/TLBWrite
add wave -noupdate -group tlbwrite /testbench/dut/hart/lsu/dmmu/tlb/PTEWriteVal
add wave -noupdate -group tlbwrite /testbench/dut/hart/lsu/dmmu/tlb/tlbcam/WriteLines
add wave -noupdate /testbench/dut/hart/lsu/dmmu/tlb/SATP_REGW
add wave -noupdate /testbench/dut/hart/lsu/dmmu/tlb/STATUS_MXR
add wave -noupdate /testbench/dut/hart/lsu/dmmu/tlb/STATUS_SUM
add wave -noupdate /testbench/dut/hart/lsu/dmmu/tlb/PrivilegeModeW
add wave -noupdate /testbench/dut/hart/lsu/dmmu/tlb/TLBAccessType
add wave -noupdate /testbench/dut/hart/lsu/dmmu/tlb/DisableTranslation
add wave -noupdate /testbench/dut/hart/lsu/dmmu/tlb/VirtualAddress
add wave -noupdate /testbench/dut/hart/lsu/dmmu/tlb/PTEWriteVal
add wave -noupdate /testbench/dut/hart/lsu/dmmu/tlb/PageTypeWriteVal
add wave -noupdate /testbench/dut/hart/lsu/dmmu/tlb/TLBWrite
add wave -noupdate /testbench/dut/hart/lsu/dmmu/tlb/TLBFlush
TreeUpdate [SetDefaultTree]
WaveRestoreCursors {{Cursor 8} {3766 ns} 0} {{Cursor 3} {3377 ns} 0} {{Cursor 4} {3215 ns} 0}
quietly wave cursor active 3
WaveRestoreCursors {{Cursor 8} {4545 ns} 0} {{Cursor 3} {3377 ns} 0} {{Cursor 4} {3215 ns} 0}
quietly wave cursor active 1
configure wave -namecolwidth 250
configure wave -valuecolwidth 189
configure wave -justifyvalue left
@ -392,4 +383,4 @@ configure wave -griddelta 40
configure wave -timeline 0
configure wave -timelineunits ns
update
WaveRestoreZoom {3163 ns} {3403 ns}
WaveRestoreZoom {4209 ns} {4657 ns}

124
wally-pipelined/src/cache/ICacheCntrl.sv vendored
View File

@ -25,48 +25,50 @@
`include "wally-config.vh"
module ICacheCntrl #(parameter BLOCKLEN = 256) (
// Inputs from pipeline
input logic clk, reset,
input logic StallF, StallD,
input logic FlushD,
module ICacheCntrl #(parameter BLOCKLEN = 256)
(
// Inputs from pipeline
input logic clk, reset,
input logic StallF, StallD,
input logic FlushD,
// Input the address to read
// The upper bits of the physical pc
input logic [`PA_BITS-1:0] PCNextF,
input logic [`PA_BITS-1:0] PCPF,
// Signals to/from cache memory
// The read coming out of it
input logic [31:0] ICacheMemReadData,
input logic ICacheMemReadValid,
// The address at which we want to search the cache memory
output logic [`PA_BITS-1:0] PCTagF,
output logic [`PA_BITS-1:0] PCNextIndexF,
output logic ICacheReadEn,
// Load data into the cache
output logic ICacheMemWriteEnable,
output logic [BLOCKLEN-1:0] ICacheMemWriteData,
// Input the address to read
// The upper bits of the physical pc
input logic [`PA_BITS-1:0] PCNextF,
input logic [`PA_BITS-1:0] PCPF,
// Signals to/from cache memory
// The read coming out of it
input logic [31:0] ICacheMemReadData,
input logic ICacheMemReadValid,
// The address at which we want to search the cache memory
output logic [`PA_BITS-1:0] PCTagF,
output logic [`PA_BITS-1:0] PCNextIndexF,
output logic ICacheReadEn,
// Load data into the cache
output logic ICacheMemWriteEnable,
output logic [BLOCKLEN-1:0] ICacheMemWriteData,
// Outputs to rest of ifu
// High if the instruction in the fetch stage is compressed
output logic CompressedF,
// The instruction that was requested
// If this instruction is compressed, upper 16 bits may be the next 16 bits or may be zeros
output logic [31:0] FinalInstrRawF,
// Outputs to rest of ifu
// High if the instruction in the fetch stage is compressed
output logic CompressedF,
// The instruction that was requested
// If this instruction is compressed, upper 16 bits may be the next 16 bits or may be zeros
output logic [31:0] FinalInstrRawF,
// Outputs to pipeline control stuff
output logic ICacheStallF, EndFetchState,
input logic ITLBMissF,
input logic ITLBWriteF,
// Outputs to pipeline control stuff
output logic ICacheStallF, EndFetchState,
input logic ITLBMissF,
input logic ITLBWriteF,
input logic WalkerInstrPageFaultF,
// Signals to/from ahblite interface
// A read containing the requested data
input logic [`XLEN-1:0] InstrInF,
input logic InstrAckF,
// The read we request from main memory
output logic [`PA_BITS-1:0] InstrPAdrF,
output logic InstrReadF
);
// Signals to/from ahblite interface
// A read containing the requested data
input logic [`XLEN-1:0] InstrInF,
input logic InstrAckF,
// The read we request from main memory
output logic [`PA_BITS-1:0] InstrPAdrF,
output logic InstrReadF
);
// FSM states
localparam STATE_READY = 0;
@ -125,39 +127,39 @@ module ICacheCntrl #(parameter BLOCKLEN = 256) (
localparam WORDSPERLINE = BLOCKLEN/`XLEN;
localparam LOGWPL = $clog2(WORDSPERLINE);
localparam integer PA_WIDTH = `PA_BITS - 2;
localparam integer PA_WIDTH = `PA_BITS - 2;
logic [4:0] CurrState, NextState;
logic hit, spill;
logic SavePC;
logic [1:0] PCMux;
logic CntReset;
logic PreCntEn, CntEn;
logic spillSave;
logic UnalignedSelect;
logic FetchCountFlag;
logic [4:0] CurrState, NextState;
logic hit, spill;
logic SavePC;
logic [1:0] PCMux;
logic CntReset;
logic PreCntEn, CntEn;
logic spillSave;
logic UnalignedSelect;
logic FetchCountFlag;
localparam FetchCountThreshold = WORDSPERLINE - 1;
logic [LOGWPL:0] FetchCount, NextFetchCount;
logic [LOGWPL:0] FetchCount, NextFetchCount;
logic [`PA_BITS-1:0] PCPreFinalF, PCPSpillF;
logic [`PA_BITS-1:0] PCPreFinalF, PCPSpillF;
logic [`PA_BITS-1:OFFSETWIDTH] PCPTrunkF;
logic [15:0] SpillDataBlock0;
logic [15:0] SpillDataBlock0;
localparam [31:0] NOP = 32'h13;
logic reset_q;
logic [1:0] PCMux_q;
logic reset_q;
logic [1:0] PCMux_q;
// Misaligned signals
//logic [`XLEN:0] MisalignedInstrRawF;
//logic MisalignedStall;
// Cache fault signals
//logic FaultStall;
// Misaligned signals
//logic [`XLEN:0] MisalignedInstrRawF;
//logic MisalignedStall;
// Cache fault signals
//logic FaultStall;
// on spill we want to get the first 2 bytes of the next cache block.
// the spill only occurs if the PCPF mod BlockByteLength == -2. Therefore we can
@ -181,7 +183,7 @@ module ICacheCntrl #(parameter BLOCKLEN = 256) (
// truncate the offset from PCPF for memory address generation
assign PCPTrunkF = PCTagF[`PA_BITS-1:OFFSETWIDTH];
// Detect if the instruction is compressed
// Detect if the instruction is compressed
assign CompressedF = FinalInstrRawF[1:0] != 2'b11;
@ -372,7 +374,7 @@ module ICacheCntrl #(parameter BLOCKLEN = 256) (
NextState = STATE_READY;
end
STATE_TLB_MISS: begin
if (ITLBWriteF) begin
if (ITLBWriteF | WalkerInstrPageFaultF) begin
NextState = STATE_TLB_MISS_DONE;
end else begin
NextState = STATE_TLB_MISS;
@ -425,7 +427,7 @@ module ICacheCntrl #(parameter BLOCKLEN = 256) (
// store read data from memory interface before writing into SRAM.
genvar i;
genvar i;
generate
for (i = 0; i < WORDSPERLINE; i++) begin
flopenr #(`XLEN) flop(.clk(clk),

39
wally-pipelined/src/lsu/lsuArb.sv
View File

@ -101,23 +101,38 @@ module lsuArb
always_comb begin
case(CurrState)
StateReady:
/* -----\/----- EXCLUDED -----\/-----
if (HPTWTranslate & DataStall) NextState = StatePTWPending;
else
-----/\----- EXCLUDED -----/\----- */
if (HPTWTranslate) NextState = StatePTWActive;
else NextState = StateReady;
StatePTWPending:
if (HPTWTranslate & ~DataStall) NextState = StatePTWActive;
else if (HPTWTranslate & DataStall) NextState = StatePTWPending;
else NextState = StateReady;
if (HPTWTranslate) NextState = StatePTWActive;
else NextState = StateReady;
StatePTWActive:
if (HPTWTranslate) NextState = StatePTWActive;
else NextState = StateReady;
if (HPTWTranslate) NextState = StatePTWActive;
else NextState = StateReady;
default: NextState = StateReady;
endcase
end
/* -----\/----- EXCLUDED -----\/-----
always_comb begin
case(CurrState)
StateReady:
/-* -----\/----- EXCLUDED -----\/-----
if (HPTWTranslate & DataStall) NextState = StatePTWPending;
else
-----/\----- EXCLUDED -----/\----- *-/
if (HPTWTranslate) NextState = StatePTWActive;
else NextState = StateReady;
StatePTWPending:
if (HPTWTranslate & ~DataStall) NextState = StatePTWActive;
else if (HPTWTranslate & DataStall) NextState = StatePTWPending;
else NextState = StateReady;
StatePTWActive:
if (HPTWTranslate) NextState = StatePTWActive;
else NextState = StateReady;
default: NextState = StateReady;
endcase
end
-----/\----- EXCLUDED -----/\----- */
// multiplex the outputs to LSU
assign DisableTranslation = SelPTW; // change names between SelPTW would be confusing in DTLB.

17
wally-pipelined/src/mmu/pagetablewalker.sv
View File

@ -369,9 +369,6 @@ module pagetablewalker
HPTWRead = 1'b1;
end else begin
NextWalkerState = FAULT;
WalkerInstrPageFaultF = ~DTLBMissMQ;
WalkerLoadPageFaultM = DTLBMissMQ && ~MemStore;
WalkerStorePageFaultM = DTLBMissMQ && MemStore;
end
end
@ -409,9 +406,6 @@ module pagetablewalker
HPTWRead = 1'b1;
end else begin
NextWalkerState = FAULT;
WalkerInstrPageFaultF = ~DTLBMissMQ;
WalkerLoadPageFaultM = DTLBMissMQ && ~MemStore;
WalkerStorePageFaultM = DTLBMissMQ && MemStore;
end
end
@ -450,9 +444,6 @@ module pagetablewalker
HPTWRead = 1'b1;
end else begin
NextWalkerState = FAULT;
WalkerInstrPageFaultF = ~DTLBMissMQ;
WalkerLoadPageFaultM = DTLBMissMQ && ~MemStore;
WalkerStorePageFaultM = DTLBMissMQ && MemStore;
end
end
@ -479,9 +470,6 @@ module pagetablewalker
TranslationPAdr = TranslationVAdrQ;
end else begin
NextWalkerState = FAULT;
WalkerInstrPageFaultF = ~DTLBMissMQ;
WalkerLoadPageFaultM = DTLBMissMQ && ~MemStore;
WalkerStorePageFaultM = DTLBMissMQ && MemStore;
end
end
@ -492,7 +480,10 @@ module pagetablewalker
FAULT: begin
NextWalkerState = IDLE;
MMUStall = 1'b0;
WalkerInstrPageFaultF = ~DTLBMissMQ;
WalkerLoadPageFaultM = DTLBMissMQ && ~MemStore;
WalkerStorePageFaultM = DTLBMissMQ && MemStore;
MMUStall = 1'b0;
end
// Default case should never happen