Modified the icache memory to read using the virtual (non physical) address in the PCNextF stage.

This allows recovering from an ITLBMiss to be 1 cycle after and simplifies the hptw slightly.
This commit is contained in:
Ross Thompson 2021-12-19 14:57:42 -06:00
parent 0257c08641
commit 9adcf86a40
5 changed files with 67 additions and 82 deletions

View File

@ -15,31 +15,31 @@ add wave -noupdate -expand -group {Memory Stage} /testbench/dut/hart/InstrM
add wave -noupdate -expand -group {Memory Stage} /testbench/dut/hart/lsu/IEUAdrM add wave -noupdate -expand -group {Memory Stage} /testbench/dut/hart/lsu/IEUAdrM
add wave -noupdate /testbench/dut/hart/ieu/dp/ResultM add wave -noupdate /testbench/dut/hart/ieu/dp/ResultM
add wave -noupdate /testbench/dut/hart/ieu/dp/ResultW add wave -noupdate /testbench/dut/hart/ieu/dp/ResultW
add wave -noupdate -group HDU -expand -group traps /testbench/dut/hart/priv/trap/InstrMisalignedFaultM add wave -noupdate -group HDU -group traps /testbench/dut/hart/priv/trap/InstrMisalignedFaultM
add wave -noupdate -group HDU -expand -group traps /testbench/dut/hart/priv/trap/InstrAccessFaultM add wave -noupdate -group HDU -group traps /testbench/dut/hart/priv/trap/InstrAccessFaultM
add wave -noupdate -group HDU -expand -group traps /testbench/dut/hart/priv/trap/IllegalInstrFaultM add wave -noupdate -group HDU -group traps /testbench/dut/hart/priv/trap/IllegalInstrFaultM
add wave -noupdate -group HDU -expand -group traps /testbench/dut/hart/priv/trap/BreakpointFaultM add wave -noupdate -group HDU -group traps /testbench/dut/hart/priv/trap/BreakpointFaultM
add wave -noupdate -group HDU -expand -group traps /testbench/dut/hart/priv/trap/LoadMisalignedFaultM add wave -noupdate -group HDU -group traps /testbench/dut/hart/priv/trap/LoadMisalignedFaultM
add wave -noupdate -group HDU -expand -group traps /testbench/dut/hart/priv/trap/StoreMisalignedFaultM add wave -noupdate -group HDU -group traps /testbench/dut/hart/priv/trap/StoreMisalignedFaultM
add wave -noupdate -group HDU -expand -group traps /testbench/dut/hart/priv/trap/LoadAccessFaultM add wave -noupdate -group HDU -group traps /testbench/dut/hart/priv/trap/LoadAccessFaultM
add wave -noupdate -group HDU -expand -group traps /testbench/dut/hart/priv/trap/StoreAccessFaultM add wave -noupdate -group HDU -group traps /testbench/dut/hart/priv/trap/StoreAccessFaultM
add wave -noupdate -group HDU -expand -group traps /testbench/dut/hart/priv/trap/EcallFaultM add wave -noupdate -group HDU -group traps /testbench/dut/hart/priv/trap/EcallFaultM
add wave -noupdate -group HDU -expand -group traps /testbench/dut/hart/priv/trap/InstrPageFaultM add wave -noupdate -group HDU -group traps /testbench/dut/hart/priv/trap/InstrPageFaultM
add wave -noupdate -group HDU -expand -group traps /testbench/dut/hart/priv/trap/LoadPageFaultM add wave -noupdate -group HDU -group traps /testbench/dut/hart/priv/trap/LoadPageFaultM
add wave -noupdate -group HDU -expand -group traps /testbench/dut/hart/priv/trap/StorePageFaultM add wave -noupdate -group HDU -group traps /testbench/dut/hart/priv/trap/StorePageFaultM
add wave -noupdate -group HDU -expand -group traps /testbench/dut/hart/priv/trap/InterruptM add wave -noupdate -group HDU -group traps /testbench/dut/hart/priv/trap/InterruptM
add wave -noupdate -group HDU -group interrupts /testbench/dut/hart/priv/trap/PendingIntsM add wave -noupdate -group HDU -group interrupts /testbench/dut/hart/priv/trap/PendingIntsM
add wave -noupdate -group HDU -group interrupts /testbench/dut/hart/priv/trap/CommittedM add wave -noupdate -group HDU -group interrupts /testbench/dut/hart/priv/trap/CommittedM
add wave -noupdate -group HDU -group interrupts /testbench/dut/hart/priv/trap/InstrValidM add wave -noupdate -group HDU -group interrupts /testbench/dut/hart/priv/trap/InstrValidM
add wave -noupdate -group HDU -group hazards /testbench/dut/hart/hzu/BPPredWrongE add wave -noupdate -group HDU -expand -group hazards /testbench/dut/hart/hzu/BPPredWrongE
add wave -noupdate -group HDU -group hazards /testbench/dut/hart/hzu/CSRWritePendingDEM add wave -noupdate -group HDU -expand -group hazards /testbench/dut/hart/hzu/CSRWritePendingDEM
add wave -noupdate -group HDU -group hazards /testbench/dut/hart/hzu/RetM add wave -noupdate -group HDU -expand -group hazards /testbench/dut/hart/hzu/RetM
add wave -noupdate -group HDU -group hazards /testbench/dut/hart/hzu/TrapM add wave -noupdate -group HDU -expand -group hazards /testbench/dut/hart/hzu/TrapM
add wave -noupdate -group HDU -group hazards /testbench/dut/hart/hzu/LoadStallD add wave -noupdate -group HDU -expand -group hazards /testbench/dut/hart/hzu/LoadStallD
add wave -noupdate -group HDU -group hazards /testbench/dut/hart/hzu/StoreStallD add wave -noupdate -group HDU -expand -group hazards /testbench/dut/hart/hzu/StoreStallD
add wave -noupdate -group HDU -group hazards /testbench/dut/hart/hzu/ICacheStallF add wave -noupdate -group HDU -expand -group hazards /testbench/dut/hart/hzu/ICacheStallF
add wave -noupdate -group HDU -group hazards /testbench/dut/hart/hzu/LSUStall add wave -noupdate -group HDU -expand -group hazards /testbench/dut/hart/hzu/LSUStall
add wave -noupdate -group HDU -group hazards /testbench/dut/hart/MulDivStallD add wave -noupdate -group HDU -expand -group hazards /testbench/dut/hart/MulDivStallD
add wave -noupdate -group HDU -expand -group Flush -color Yellow /testbench/dut/hart/hzu/FlushF add wave -noupdate -group HDU -expand -group Flush -color Yellow /testbench/dut/hart/hzu/FlushF
add wave -noupdate -group HDU -expand -group Flush -color Yellow /testbench/dut/hart/FlushD add wave -noupdate -group HDU -expand -group Flush -color Yellow /testbench/dut/hart/FlushD
add wave -noupdate -group HDU -expand -group Flush -color Yellow /testbench/dut/hart/FlushE add wave -noupdate -group HDU -expand -group Flush -color Yellow /testbench/dut/hart/FlushE
@ -97,21 +97,21 @@ add wave -noupdate -group Bpred -expand -group {bp wrong} /testbench/dut/hart/if
add wave -noupdate -group Bpred -expand -group {bp wrong} /testbench/dut/hart/ifu/bpred/bpred/BPPredClassNonCFIWrongE add wave -noupdate -group Bpred -expand -group {bp wrong} /testbench/dut/hart/ifu/bpred/bpred/BPPredClassNonCFIWrongE
add wave -noupdate -group Bpred -expand -group {bp wrong} /testbench/dut/hart/ifu/bpred/bpred/BPPredWrongE add wave -noupdate -group Bpred -expand -group {bp wrong} /testbench/dut/hart/ifu/bpred/bpred/BPPredWrongE
add wave -noupdate -group Bpred /testbench/dut/hart/ifu/bpred/bpred/BPPredWrongE add wave -noupdate -group Bpred /testbench/dut/hart/ifu/bpred/bpred/BPPredWrongE
add wave -noupdate -expand -group {instruction pipeline} /testbench/InstrFName add wave -noupdate -group {instruction pipeline} /testbench/InstrFName
add wave -noupdate -expand -group {instruction pipeline} /testbench/dut/hart/ifu/icache/FinalInstrRawF add wave -noupdate -group {instruction pipeline} /testbench/dut/hart/ifu/icache/FinalInstrRawF
add wave -noupdate -expand -group {instruction pipeline} /testbench/dut/hart/ifu/InstrD add wave -noupdate -group {instruction pipeline} /testbench/dut/hart/ifu/InstrD
add wave -noupdate -expand -group {instruction pipeline} /testbench/dut/hart/ifu/InstrE add wave -noupdate -group {instruction pipeline} /testbench/dut/hart/ifu/InstrE
add wave -noupdate -expand -group {instruction pipeline} /testbench/dut/hart/ifu/InstrM add wave -noupdate -group {instruction pipeline} /testbench/dut/hart/ifu/InstrM
add wave -noupdate -expand -group {instruction pipeline} /testbench/InstrW add wave -noupdate -group {instruction pipeline} /testbench/InstrW
add wave -noupdate -group {PCNext Generation} /testbench/dut/hart/ifu/PCNextF add wave -noupdate -expand -group {PCNext Generation} /testbench/dut/hart/ifu/PCNextF
add wave -noupdate -group {PCNext Generation} /testbench/dut/hart/ifu/PCF add wave -noupdate -expand -group {PCNext Generation} /testbench/dut/hart/ifu/PCF
add wave -noupdate -group {PCNext Generation} /testbench/dut/hart/ifu/PCPlus2or4F add wave -noupdate -expand -group {PCNext Generation} /testbench/dut/hart/ifu/PCPlus2or4F
add wave -noupdate -group {PCNext Generation} /testbench/dut/hart/ifu/BPPredPCF add wave -noupdate -expand -group {PCNext Generation} /testbench/dut/hart/ifu/BPPredPCF
add wave -noupdate -group {PCNext Generation} /testbench/dut/hart/ifu/PCNext0F add wave -noupdate -expand -group {PCNext Generation} /testbench/dut/hart/ifu/PCNext0F
add wave -noupdate -group {PCNext Generation} /testbench/dut/hart/ifu/PCNext1F add wave -noupdate -expand -group {PCNext Generation} /testbench/dut/hart/ifu/PCNext1F
add wave -noupdate -group {PCNext Generation} /testbench/dut/hart/ifu/SelBPPredF add wave -noupdate -expand -group {PCNext Generation} /testbench/dut/hart/ifu/SelBPPredF
add wave -noupdate -group {PCNext Generation} /testbench/dut/hart/ifu/BPPredWrongE add wave -noupdate -expand -group {PCNext Generation} /testbench/dut/hart/ifu/BPPredWrongE
add wave -noupdate -group {PCNext Generation} /testbench/dut/hart/ifu/PrivilegedChangePCM add wave -noupdate -expand -group {PCNext Generation} /testbench/dut/hart/ifu/PrivilegedChangePCM
add wave -noupdate -group {Decode Stage} /testbench/dut/hart/ifu/InstrD add wave -noupdate -group {Decode Stage} /testbench/dut/hart/ifu/InstrD
add wave -noupdate -group {Decode Stage} /testbench/InstrDName add wave -noupdate -group {Decode Stage} /testbench/InstrDName
add wave -noupdate -group {Decode Stage} /testbench/dut/hart/ieu/c/RegWriteD add wave -noupdate -group {Decode Stage} /testbench/dut/hart/ieu/c/RegWriteD
@ -126,7 +126,6 @@ add wave -noupdate -group RegFile /testbench/dut/hart/ieu/dp/regf/rd1
add wave -noupdate -group RegFile /testbench/dut/hart/ieu/dp/regf/rd2 add wave -noupdate -group RegFile /testbench/dut/hart/ieu/dp/regf/rd2
add wave -noupdate -group RegFile /testbench/dut/hart/ieu/dp/regf/we3 add wave -noupdate -group RegFile /testbench/dut/hart/ieu/dp/regf/we3
add wave -noupdate -group RegFile /testbench/dut/hart/ieu/dp/regf/wd3 add wave -noupdate -group RegFile /testbench/dut/hart/ieu/dp/regf/wd3
add wave -noupdate -group RegFile -group {write regfile mux} /testbench/dut/hart/ieu/dp/IntResultW
add wave -noupdate -group RegFile -group {write regfile mux} /testbench/dut/hart/ieu/dp/ReadDataW add wave -noupdate -group RegFile -group {write regfile mux} /testbench/dut/hart/ieu/dp/ReadDataW
add wave -noupdate -group RegFile -group {write regfile mux} /testbench/dut/hart/ieu/dp/CSRReadValW add wave -noupdate -group RegFile -group {write regfile mux} /testbench/dut/hart/ieu/dp/CSRReadValW
add wave -noupdate -group RegFile -group {write regfile mux} /testbench/dut/hart/ieu/dp/ResultSrcW add wave -noupdate -group RegFile -group {write regfile mux} /testbench/dut/hart/ieu/dp/ResultSrcW
@ -134,8 +133,6 @@ add wave -noupdate -group RegFile -group {write regfile mux} /testbench/dut/hart
add wave -noupdate -group alu /testbench/dut/hart/ieu/dp/alu/A add wave -noupdate -group alu /testbench/dut/hart/ieu/dp/alu/A
add wave -noupdate -group alu /testbench/dut/hart/ieu/dp/alu/B add wave -noupdate -group alu /testbench/dut/hart/ieu/dp/alu/B
add wave -noupdate -group alu /testbench/dut/hart/ieu/dp/alu/ALUControl add wave -noupdate -group alu /testbench/dut/hart/ieu/dp/alu/ALUControl
add wave -noupdate -group alu /testbench/dut/hart/ieu/dp/alu/result
add wave -noupdate -group alu /testbench/dut/hart/ieu/dp/alu/FlagsE
add wave -noupdate -group alu -divider internals add wave -noupdate -group alu -divider internals
add wave -noupdate -group Forward /testbench/dut/hart/ieu/fw/Rs1D add wave -noupdate -group Forward /testbench/dut/hart/ieu/fw/Rs1D
add wave -noupdate -group Forward /testbench/dut/hart/ieu/fw/Rs2D add wave -noupdate -group Forward /testbench/dut/hart/ieu/fw/Rs2D
@ -154,13 +151,12 @@ add wave -noupdate -group {alu execution stage} /testbench/dut/hart/ieu/dp/Write
add wave -noupdate -group {alu execution stage} /testbench/dut/hart/ieu/dp/ALUResultE add wave -noupdate -group {alu execution stage} /testbench/dut/hart/ieu/dp/ALUResultE
add wave -noupdate -group {alu execution stage} /testbench/dut/hart/ieu/dp/SrcAE add wave -noupdate -group {alu execution stage} /testbench/dut/hart/ieu/dp/SrcAE
add wave -noupdate -group {alu execution stage} /testbench/dut/hart/ieu/dp/SrcBE add wave -noupdate -group {alu execution stage} /testbench/dut/hart/ieu/dp/SrcBE
add wave -noupdate -expand -group PCS /testbench/dut/hart/ifu/PCNextF add wave -noupdate -group PCS /testbench/dut/hart/ifu/PCNextF
add wave -noupdate -expand -group PCS /testbench/dut/hart/PCF add wave -noupdate -group PCS /testbench/dut/hart/PCF
add wave -noupdate -expand -group PCS /testbench/dut/hart/ifu/PCD add wave -noupdate -group PCS /testbench/dut/hart/ifu/PCD
add wave -noupdate -expand -group PCS /testbench/dut/hart/PCE add wave -noupdate -group PCS /testbench/dut/hart/PCE
add wave -noupdate -expand -group PCS /testbench/dut/hart/PCM add wave -noupdate -group PCS /testbench/dut/hart/PCM
add wave -noupdate -expand -group PCS /testbench/PCW add wave -noupdate -group PCS /testbench/PCW
add wave -noupdate -group muldiv /testbench/dut/hart/mdu/InstrD
add wave -noupdate -group muldiv /testbench/dut/hart/mdu/ForwardedSrcAE add wave -noupdate -group muldiv /testbench/dut/hart/mdu/ForwardedSrcAE
add wave -noupdate -group muldiv /testbench/dut/hart/mdu/ForwardedSrcBE add wave -noupdate -group muldiv /testbench/dut/hart/mdu/ForwardedSrcBE
add wave -noupdate -group muldiv /testbench/dut/hart/mdu/Funct3E add wave -noupdate -group muldiv /testbench/dut/hart/mdu/Funct3E
@ -241,6 +237,9 @@ add wave -noupdate -expand -group icache -expand -group {fsm out and control} /t
add wave -noupdate -expand -group icache -expand -group {fsm out and control} /testbench/dut/hart/ifu/icache/controller/CntReset add wave -noupdate -expand -group icache -expand -group {fsm out and control} /testbench/dut/hart/ifu/icache/controller/CntReset
add wave -noupdate -expand -group icache -expand -group {fsm out and control} /testbench/dut/hart/ifu/icache/controller/PreCntEn add wave -noupdate -expand -group icache -expand -group {fsm out and control} /testbench/dut/hart/ifu/icache/controller/PreCntEn
add wave -noupdate -expand -group icache -expand -group {fsm out and control} /testbench/dut/hart/ifu/icache/controller/CntEn add wave -noupdate -expand -group icache -expand -group {fsm out and control} /testbench/dut/hart/ifu/icache/controller/CntEn
add wave -noupdate -expand -group icache /testbench/dut/hart/ifu/icache/SelAdr
add wave -noupdate -expand -group icache /testbench/dut/hart/ifu/icache/RAdr
add wave -noupdate -expand -group icache /testbench/dut/hart/ifu/icache/FinalInstrRawF
add wave -noupdate -expand -group icache -expand -group memory /testbench/dut/hart/ifu/icache/InstrPAdrF add wave -noupdate -expand -group icache -expand -group memory /testbench/dut/hart/ifu/icache/InstrPAdrF
add wave -noupdate -expand -group icache -expand -group memory /testbench/dut/hart/ifu/icache/InstrInF add wave -noupdate -expand -group icache -expand -group memory /testbench/dut/hart/ifu/icache/InstrInF
add wave -noupdate -expand -group icache -expand -group memory /testbench/dut/hart/ifu/icache/controller/FetchCountFlag add wave -noupdate -expand -group icache -expand -group memory /testbench/dut/hart/ifu/icache/controller/FetchCountFlag
@ -367,7 +366,6 @@ add wave -noupdate -expand -group lsu -expand -group dcache -group Victim /testb
add wave -noupdate -expand -group lsu -expand -group dcache -group Victim /testbench/dut/hart/lsu/dcache/VictimDirtyWay add wave -noupdate -expand -group lsu -expand -group dcache -group Victim /testbench/dut/hart/lsu/dcache/VictimDirtyWay
add wave -noupdate -expand -group lsu -expand -group dcache -group Victim /testbench/dut/hart/lsu/dcache/VictimDirty add wave -noupdate -expand -group lsu -expand -group dcache -group Victim /testbench/dut/hart/lsu/dcache/VictimDirty
add wave -noupdate -expand -group lsu -expand -group dcache -expand -group {CPU side} /testbench/dut/hart/lsu/dcache/MemRWM add wave -noupdate -expand -group lsu -expand -group dcache -expand -group {CPU side} /testbench/dut/hart/lsu/dcache/MemRWM
add wave -noupdate -expand -group lsu -expand -group dcache -expand -group {CPU side} /testbench/dut/hart/lsu/dcache/MemAdrE
add wave -noupdate -expand -group lsu -expand -group dcache -expand -group {CPU side} /testbench/dut/hart/lsu/dcache/MemPAdrM add wave -noupdate -expand -group lsu -expand -group dcache -expand -group {CPU side} /testbench/dut/hart/lsu/dcache/MemPAdrM
add wave -noupdate -expand -group lsu -expand -group dcache -expand -group {CPU side} /testbench/dut/hart/lsu/dcache/Funct3M add wave -noupdate -expand -group lsu -expand -group dcache -expand -group {CPU side} /testbench/dut/hart/lsu/dcache/Funct3M
add wave -noupdate -expand -group lsu -expand -group dcache -expand -group {CPU side} /testbench/dut/hart/lsu/dcache/Funct7M add wave -noupdate -expand -group lsu -expand -group dcache -expand -group {CPU side} /testbench/dut/hart/lsu/dcache/Funct7M
@ -426,9 +424,9 @@ add wave -noupdate -expand -group lsu -expand -group ptwalker -expand -group typ
add wave -noupdate -expand -group lsu -expand -group ptwalker -expand -group types /testbench/dut/hart/lsu/hptw/WalkerLoadPageFaultM add wave -noupdate -expand -group lsu -expand -group ptwalker -expand -group types /testbench/dut/hart/lsu/hptw/WalkerLoadPageFaultM
add wave -noupdate -expand -group lsu -expand -group ptwalker -expand -group types /testbench/dut/hart/lsu/hptw/WalkerStorePageFaultM add wave -noupdate -expand -group lsu -expand -group ptwalker -expand -group types /testbench/dut/hart/lsu/hptw/WalkerStorePageFaultM
add wave -noupdate -group csr /testbench/dut/hart/priv/csr/MIP_REGW add wave -noupdate -group csr /testbench/dut/hart/priv/csr/MIP_REGW
add wave -noupdate -expand -group itlb /testbench/dut/hart/ifu/immu/TLBWrite add wave -noupdate -group itlb /testbench/dut/hart/ifu/immu/TLBWrite
add wave -noupdate -expand -group itlb /testbench/dut/hart/ifu/ITLBMissF add wave -noupdate -group itlb /testbench/dut/hart/ifu/ITLBMissF
add wave -noupdate -expand -group itlb /testbench/dut/hart/ifu/immu/PhysicalAddress add wave -noupdate -group itlb /testbench/dut/hart/ifu/immu/PhysicalAddress
add wave -noupdate /testbench/dut/hart/lsu/dcache/VAdr add wave -noupdate /testbench/dut/hart/lsu/dcache/VAdr
add wave -noupdate /testbench/dut/hart/lsu/dcache/MemPAdrM add wave -noupdate /testbench/dut/hart/lsu/dcache/MemPAdrM
add wave -noupdate -group plic /testbench/dut/uncore/plic/plic/HCLK add wave -noupdate -group plic /testbench/dut/uncore/plic/plic/HCLK
@ -499,26 +497,12 @@ add wave -noupdate -group UART /testbench/dut/uncore/uart/uart/HSELUART
add wave -noupdate -group UART /testbench/dut/uncore/uart/uart/HADDR add wave -noupdate -group UART /testbench/dut/uncore/uart/uart/HADDR
add wave -noupdate -group UART /testbench/dut/uncore/uart/uart/HWRITE add wave -noupdate -group UART /testbench/dut/uncore/uart/uart/HWRITE
add wave -noupdate -group UART /testbench/dut/uncore/uart/uart/HWDATA add wave -noupdate -group UART /testbench/dut/uncore/uart/uart/HWDATA
add wave -noupdate -color Gold /testbench/dut/hart/lsu/dcache/subwordread/offset0 add wave -noupdate /testbench/dut/hart/lsu/CurrState
add wave -noupdate /testbench/dut/hart/lsu/dcache/subwordread/offset1 add wave -noupdate /testbench/dut/hart/lsu/InterlockStall
add wave -noupdate /testbench/dut/hart/lsu/dcache/subwordread/offset2 add wave -noupdate /testbench/dut/hart/ifu/icache/PCNextF
add wave -noupdate /testbench/dut/hart/lsu/dcache/subwordread/offset3
add wave -noupdate /testbench/dut/hart/ExceptionM
add wave -noupdate /testbench/dut/hart/PendingInterruptM
add wave -noupdate /testbench/dut/hart/TrapM
add wave -noupdate /testbench/dut/hart/ifu/icache/CompressedF
add wave -noupdate /testbench/dut/hart/ifu/icache/PCPF add wave -noupdate /testbench/dut/hart/ifu/icache/PCPF
add wave -noupdate /testbench/dut/hart/ifu/PCPFmmu
add wave -noupdate /testbench/dut/hart/ifu/PCF
add wave -noupdate /testbench/dut/hart/ifu/immu/Translate
add wave -noupdate /testbench/dut/hart/ifu/icache/FinalInstrRawF
add wave -noupdate /testbench/dut/hart/ifu/icache/StallF
add wave -noupdate /testbench/dut/hart/ifu/icache/ICacheMemReadData
add wave -noupdate /testbench/dut/hart/ifu/icache/PCTagF
add wave -noupdate /testbench/dut/hart/ifu/icache/PCPSpillF
add wave -noupdate /testbench/dut/hart/ifu/icache/ICacheReadEn
TreeUpdate [SetDefaultTree] TreeUpdate [SetDefaultTree]
WaveRestoreCursors {{Cursor 6} {24475 ns} 1} {{Cursor 2} {22501 ns} 1} {{Cursor 3} {44117 ns} 0} WaveRestoreCursors {{Cursor 6} {24475 ns} 1} {{Cursor 2} {22501 ns} 1} {{Cursor 3} {23208 ns} 0}
quietly wave cursor active 3 quietly wave cursor active 3
configure wave -namecolwidth 250 configure wave -namecolwidth 250
configure wave -valuecolwidth 297 configure wave -valuecolwidth 297
@ -534,4 +518,4 @@ configure wave -griddelta 40
configure wave -timeline 0 configure wave -timeline 0
configure wave -timelineunits ns configure wave -timelineunits ns
update update
WaveRestoreZoom {43912 ns} {44304 ns} WaveRestoreZoom {23041 ns} {23377 ns}

View File

@ -32,6 +32,7 @@ module icache
input logic StallF, input logic StallF,
input logic [`PA_BITS-1:0] PCNextF, input logic [`PA_BITS-1:0] PCNextF,
input logic [`PA_BITS-1:0] PCPF, input logic [`PA_BITS-1:0] PCPF,
input logic [`XLEN-1:0] PCF,
input logic ExceptionM, PendingInterruptM, input logic ExceptionM, PendingInterruptM,
@ -125,7 +126,7 @@ module icache
mux3 #(INDEXLEN) mux3 #(INDEXLEN)
AdrSelMux(.d0(PCNextF[INDEXLEN+OFFSETLEN-1:OFFSETLEN]), AdrSelMux(.d0(PCNextF[INDEXLEN+OFFSETLEN-1:OFFSETLEN]),
.d1(PCPF[INDEXLEN+OFFSETLEN-1:OFFSETLEN]), .d1(PCF[INDEXLEN+OFFSETLEN-1:OFFSETLEN]),
.d2(PCPSpillF[INDEXLEN+OFFSETLEN-1:OFFSETLEN]), .d2(PCPSpillF[INDEXLEN+OFFSETLEN-1:OFFSETLEN]),
.s(SelAdr), .s(SelAdr),
.y(RAdr)); .y(RAdr));
@ -219,7 +220,7 @@ module icache
// Detect if the instruction is compressed // Detect if the instruction is compressed
assign CompressedF = FinalInstrRawF[1:0] != 2'b11; assign CompressedF = FinalInstrRawF[1:0] != 2'b11;
assign spill = PCPF[4:1] == 4'b1111 ? 1'b1 : 1'b0; assign spill = PCF[4:1] == 4'b1111 ? 1'b1 : 1'b0;
// to compute the fetch address we need to add the bit shifted // to compute the fetch address we need to add the bit shifted

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@ -168,6 +168,7 @@ module ifu (
.PCNextF(PCNextFPhys), .PCNextF(PCNextFPhys),
.PCPF(PCPFmmu), .PCPF(PCPFmmu),
.PCF,
.WalkerInstrPageFaultF, .WalkerInstrPageFaultF,
.InvalidateICacheM); .InvalidateICacheM);

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@ -141,7 +141,6 @@ module lsu
statetype CurrState, NextState; statetype CurrState, NextState;
logic InterlockStall; logic InterlockStall;
logic SelReplayCPURequest; logic SelReplayCPURequest;
logic SelPTW2;
logic WalkerInstrPageFaultRaw; logic WalkerInstrPageFaultRaw;
@ -222,10 +221,13 @@ module lsu
end // always_comb end // always_comb
// signal to CPU it needs to wait on HPTW. // signal to CPU it needs to wait on HPTW.
assign InterlockStall = (NextState != STATE_T0_READY) | (NextState != STATE_T0_FAULT_REPLAY) | (NextState != STATE_T0_READY); assign InterlockStall = (CurrState == STATE_T0_READY & (DTLBMissM | ITLBMissF)) |
(CurrState == STATE_T3_DTLB_MISS) | (CurrState == STATE_T4_ITLB_MISS) |
(CurrState == STATE_T5_ITLB_MISS) | (CurrState == STATE_T7_DITLB_MISS);
// When replaying CPU memory request after PTW select the IEUAdrM for correct address. // When replaying CPU memory request after PTW select the IEUAdrM for correct address.
assign SelReplayCPURequest = NextState == STATE_T0_READY; assign SelReplayCPURequest = NextState == STATE_T0_READY;
assign SelPTW2 = (CurrState == STATE_T3_DTLB_MISS) | (CurrState == STATE_T4_ITLB_MISS) | assign SelPTW = (CurrState == STATE_T3_DTLB_MISS) | (CurrState == STATE_T4_ITLB_MISS) |
(CurrState == STATE_T5_ITLB_MISS) | (CurrState == STATE_T7_DITLB_MISS); (CurrState == STATE_T5_ITLB_MISS) | (CurrState == STATE_T7_DITLB_MISS);
@ -250,7 +252,6 @@ module lsu
.DCacheStall(DCacheStall), .DCacheStall(DCacheStall),
.TranslationPAdr, .TranslationPAdr,
.HPTWRead(HPTWRead), .HPTWRead(HPTWRead),
.SelPTW(SelPTW),
.HPTWStall, .HPTWStall,
.AnyCPUReqM, .AnyCPUReqM,
.MemAfterIWalkDone, .MemAfterIWalkDone,
@ -258,14 +259,14 @@ module lsu
.WalkerLoadPageFaultM(WalkerLoadPageFaultM), .WalkerLoadPageFaultM(WalkerLoadPageFaultM),
.WalkerStorePageFaultM(WalkerStorePageFaultM)); .WalkerStorePageFaultM(WalkerStorePageFaultM));
assign LSUStall = DCacheStall | HPTWStall; assign LSUStall = DCacheStall | InterlockStall;
assign WalkerPageFaultM = WalkerStorePageFaultM | WalkerLoadPageFaultM; assign WalkerPageFaultM = WalkerStorePageFaultM | WalkerLoadPageFaultM;
// arbiter between IEU and hptw // arbiter between IEU and hptw
lsuArb arbiter(.clk(clk), lsuArb arbiter(.clk(clk),
// HPTW connection // HPTW connection
.SelPTW(SelPTW), .SelPTW,
.HPTWRead(HPTWRead), .HPTWRead(HPTWRead),
.TranslationPAdrE(TranslationPAdr), .TranslationPAdrE(TranslationPAdr),
// CPU connection // CPU connection
@ -371,7 +372,7 @@ module lsu
.ITLBWriteF(ITLBWriteF), .ITLBWriteF(ITLBWriteF),
.ITLBMissF, .ITLBMissF,
.MemAfterIWalkDone, .MemAfterIWalkDone,
.SelPTW(SelPTW), .SelPTW,
.WalkerPageFaultM(WalkerPageFaultM), .WalkerPageFaultM(WalkerPageFaultM),
.WalkerInstrPageFaultF(WalkerInstrPageFaultF), .WalkerInstrPageFaultF(WalkerInstrPageFaultF),

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@ -44,7 +44,6 @@ module hptw
output logic [`XLEN-1:0] PTE, // page table entry to TLBs output logic [`XLEN-1:0] PTE, // page table entry to TLBs
output logic [1:0] PageType, // page type to TLBs output logic [1:0] PageType, // page type to TLBs
output logic ITLBWriteF, DTLBWriteM, // write TLB with new entry output logic ITLBWriteF, DTLBWriteM, // write TLB with new entry
output logic SelPTW, // LSU Arbiter should select signals from the PTW rather than from the IEU
output logic HPTWStall, output logic HPTWStall,
output logic [`PA_BITS-1:0] TranslationPAdr, output logic [`PA_BITS-1:0] TranslationPAdr,
output logic HPTWRead, // HPTW requesting to read memory output logic HPTWRead, // HPTW requesting to read memory
@ -101,7 +100,6 @@ module hptw
// Enable and select signals based on states // Enable and select signals based on states
assign StartWalk = (WalkerState == IDLE) & TLBMiss; assign StartWalk = (WalkerState == IDLE) & TLBMiss;
assign HPTWRead = (WalkerState == L3_RD) | (WalkerState == L2_RD) | (WalkerState == L1_RD) | (WalkerState == L0_RD); assign HPTWRead = (WalkerState == L3_RD) | (WalkerState == L2_RD) | (WalkerState == L1_RD) | (WalkerState == L0_RD);
assign SelPTW = (WalkerState != IDLE) & (WalkerState != FAULT) & (WalkerState != LEAF) & (WalkerState != LEAF_DELAY);
assign HPTWStall = (WalkerState != IDLE) & (WalkerState != FAULT); assign HPTWStall = (WalkerState != IDLE) & (WalkerState != FAULT);
assign DTLBWriteM = (WalkerState == LEAF) & DTLBWalk; assign DTLBWriteM = (WalkerState == LEAF) & DTLBWalk;
assign ITLBWriteF = (WalkerState == LEAF) & ~DTLBWalk; assign ITLBWriteF = (WalkerState == LEAF) & ~DTLBWalk;
@ -213,7 +211,7 @@ module hptw
end end
endcase endcase
end else begin // No Virtual memory supported; tie HPTW outputs to 0 end else begin // No Virtual memory supported; tie HPTW outputs to 0
assign HPTWRead = 0; assign SelPTW = 0; assign HPTWRead = 0;
assign WalkerInstrPageFaultF = 0; assign WalkerLoadPageFaultM = 0; assign WalkerStorePageFaultM = 0; assign WalkerInstrPageFaultF = 0; assign WalkerLoadPageFaultM = 0; assign WalkerStorePageFaultM = 0;
assign TranslationPAdr = 0; assign TranslationPAdr = 0;
end end