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merged coverage exclusions

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David Harris 2023-04-17 10:17:48 -07:00
commit b00b8ba366
38 changed files with 632 additions and 501 deletions
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18
sim/GetLineNum.do Normal file
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@ -0,0 +1,18 @@
# Alec Vercruysse
# 2023-04-12
# Note that the target string is regex, and needs to be double-escaped.
# e.g. to match a (, you need \\(.
proc GetLineNum {fname target} {
set f [open $fname]
set linectr 1
while {[gets $f line] != -1} {
if {[regexp $target $line]} {
close $f
return $linectr
}
incr linectr
}
close $f
return -code error \
"target string not found"
}

42
sim/coverage-exclusions-rv64gc.do
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@ -27,6 +27,8 @@
# This file should be a last resort. It's preferable to put
# // coverage off
# statements inline with the code whenever possible.
# a hack to describe coverage exclusions without hardcoding linenumbers:
do GetLineNum.do
# LZA (i<64) statement confuses coverage tool
# This is ugly to exlcude the whole file - is there a better option? // coverage off isn't working
@ -35,6 +37,46 @@ coverage exclude -srcfile lzc.sv
# FDIVSQRT has
coverage exclude -scope /core/fpu/fpu/fdivsqrt/fdivsqrtfsm -ftrans state DONE->BUSY
### Exclude D$ states and logic for the I$ instance
# This is cleaner than trying to set an I$-specific pragma in cachefsm.sv (which would exclude it for the D$ instance too)
# Also exclude the write line to ready transition for the I$ since we can't get a flush during this operation.
coverage exclude -scope /dut/core/ifu/bus/icache/icache/cachefsm -fstate CurrState STATE_FLUSH STATE_FLUSH_WRITEBACK STATE_FLUSH_WRITEBACK STATE_WRITEBACK
coverage exclude -scope /dut/core/ifu/bus/icache/icache/cachefsm -ftrans CurrState STATE_WRITE_LINE->STATE_READY
# exclude unused transitions from case statement. Unfortunately the whole branch needs to be excluded I think. Expression coverage should still work.
coverage exclude -scope /dut/core/ifu/bus/icache/icache/cachefsm -linerange [GetLineNum ../src/cache/cachefsm.sv "exclusion-tag: icache state-case"] -item b 1
# exclude branch/condition coverage: LineDirty if statement
coverage exclude -scope /dut/core/ifu/bus/icache/icache/cachefsm -linerange [GetLineNum ../src/cache/cachefsm.sv "exclusion-tag: icache FETCHStatement"] -item bc 1
# exclude the unreachable logic
set start [GetLineNum ../src/cache/cachefsm.sv "exclusion-tag-start: icache case"]
set end [GetLineNum ../src/cache/cachefsm.sv "exclusion-tag-end: icache case"]
coverage exclude -scope /dut/core/ifu/bus/icache/icache/cachefsm -linerange $start-$end
coverage exclude -scope /dut/core/ifu/bus/icache/icache/cachefsm -linerange [GetLineNum ../src/cache/cachefsm.sv "exclusion-tag: icache WRITEBACKStatement"]
# exclude Atomic Operation logic
coverage exclude -scope /dut/core/ifu/bus/icache/icache/cachefsm -linerange [GetLineNum ../src/cache/cachefsm.sv "exclusion-tag: icache storeAMO"] -item e 1 -fecexprrow 6
coverage exclude -scope /dut/core/ifu/bus/icache/icache/cachefsm -linerange [GetLineNum ../src/cache/cachefsm.sv "exclusion-tag: icache storeAMO1"] -item e 1 -fecexprrow 2-4
coverage exclude -scope /dut/core/ifu/bus/icache/icache/cachefsm -linerange [GetLineNum ../src/cache/cachefsm.sv "exclusion-tag: icache AnyUpdateHit"] -item e 1 -fecexprrow 2
# cache write logic
coverage exclude -scope /dut/core/ifu/bus/icache/icache/cachefsm -linerange [GetLineNum ../src/cache/cachefsm.sv "exclusion-tag: icache CacheW"] -item e 1 -fecexprrow 4
# output signal logic
coverage exclude -scope /dut/core/ifu/bus/icache/icache/cachefsm -linerange [GetLineNum ../src/cache/cachefsm.sv "exclusion-tag: icache StallStates"] -item e 1 -fecexprrow 8 12 14
set start [GetLineNum ../src/cache/cachefsm.sv "exclusion-tag-start: icache flushdirtycontrols"]
set end [GetLineNum ../src/cache/cachefsm.sv "exclusion-tag-end: icache flushdirtycontrols"]
coverage exclude -scope /dut/core/ifu/bus/icache/icache/cachefsm -linerange $start-$end
coverage exclude -scope /dut/core/ifu/bus/icache/icache/cachefsm -linerange [GetLineNum ../src/cache/cachefsm.sv "exclusion-tag: icache CacheBusW"]
coverage exclude -scope /dut/core/ifu/bus/icache/icache/cachefsm -linerange [GetLineNum ../src/cache/cachefsm.sv "exclusion-tag: icache SelAdrCauses"] -item e 1 -fecexprrow 4 10
coverage exclude -scope /dut/core/ifu/bus/icache/icache/cachefsm -linerange [GetLineNum ../src/cache/cachefsm.sv "exclusion-tag: icache CacheBusRCauses"] -item e 1 -fecexprrow 1-2 12
# cache.sv AdrSelMux and CacheBusAdrMux, excluding unhit Flush branch
coverage exclude -scope /dut/core/ifu/bus/icache/icache/AdrSelMux -linerange [GetLineNum ../src/generic/mux.sv "exclusion-tag: mux3"] -item b 1
coverage exclude -scope /dut/core/ifu/bus/icache/icache/CacheBusAdrMux -linerange [GetLineNum ../src/generic/mux.sv "exclusion-tag: mux3"] -item b 1 3
# CacheWay Dirty logic. -scope does not accept wildcards.
set numcacheways 4
for {set i 0} {$i < $numcacheways} {incr i} {
coverage exclude -scope /dut/core/ifu/bus/icache/icache/CacheWays[$i] -linerange [GetLineNum ../src/cache/cacheway.sv "exclusion-tag: icache SetDirtyWay"] -item e 1
coverage exclude -scope /dut/core/ifu/bus/icache/icache/CacheWays[$i] -linerange [GetLineNum ../src/cache/cacheway.sv "exclusion-tag: icache SelectedWiteWordEn"] -item e 1 -fecexprrow 4 6
# below: flushD can't go high during an icache write b/c of pipeline stall
coverage exclude -scope /dut/core/ifu/bus/icache/icache/CacheWays[$i] -linerange [GetLineNum ../src/cache/cacheway.sv "exclusion-tag: icache SetValidEN"] -item e 1 -fecexprrow 4
}
# Excluding peripherals as sources of instructions for the ifu
coverage exclude -scope /dut/core/ifu/immu/immu/pmachecker/adrdecs/clintdec

20
src/cache/cache.sv vendored
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@ -1,5 +1,5 @@
///////////////////////////////////////////
// cache
// cache.sv
//
// Written: Ross Thompson ross1728@gmail.com
// Created: 7 July 2021
@ -122,7 +122,7 @@ module cache #(parameter LINELEN, NUMLINES, NUMWAYS, LOGBWPL, WORDLEN, MUXINTE
// Select victim way for associative caches
if(NUMWAYS > 1) begin:vict
cacheLRU #(NUMWAYS, SETLEN, OFFSETLEN, NUMLINES) cacheLRU(
.clk, .reset, .CacheEn, .FlushStage, .HitWay, .ValidWay, .VictimWay, .CacheSet, .LRUWriteEn,
.clk, .reset, .CacheEn, .HitWay, .ValidWay, .VictimWay, .CacheSet, .LRUWriteEn,
.SetValid, .PAdr(PAdr[SETTOP-1:OFFSETLEN]), .InvalidateCache, .FlushCache);
end else
assign VictimWay = 1'b1; // one hot.
@ -167,22 +167,22 @@ module cache #(parameter LINELEN, NUMLINES, NUMWAYS, LOGBWPL, WORDLEN, MUXINTE
// Adjust byte mask from word to cache line
onehotdecoder #(LOGCWPL) adrdec(.bin(PAdr[LOGCWPL+LOGLLENBYTES-1:LOGLLENBYTES]), .decoded(MemPAdrDecoded));
for(index = 0; index < 2**LOGCWPL; index++) begin
assign DemuxedByteMask[(index+1)*(WORDLEN/8)-1:index*(WORDLEN/8)] = MemPAdrDecoded[index] ? ByteMask : '0;
assign DemuxedByteMask[(index+1)*(WORDLEN/8)-1:index*(WORDLEN/8)] = MemPAdrDecoded[index] ? ByteMask : '0;
end
assign FetchBufferByteSel = SetValid & ~SetDirty ? '1 : ~DemuxedByteMask; // If load miss set all muxes to 1.
// Merge write data into fetched cache line for store miss
for(index = 0; index < LINELEN/8; index++) begin
mux2 #(8) WriteDataMux(.d0(CacheWriteData[(8*index)%WORDLEN+7:(8*index)%WORDLEN]),
.d1(FetchBuffer[8*index+7:8*index]), .s(FetchBufferByteSel[index]), .y(LineWriteData[8*index+7:8*index]));
mux2 #(8) WriteDataMux(.d0(CacheWriteData[(8*index)%WORDLEN+7:(8*index)%WORDLEN]),
.d1(FetchBuffer[8*index+7:8*index]), .s(FetchBufferByteSel[index]), .y(LineWriteData[8*index+7:8*index]));
end
assign LineByteMask = SetValid ? '1 : SetDirty ? DemuxedByteMask : '0;
end
else
begin:WriteSelLogic
// No need for this mux if the cache does not handle writes.
assign LineWriteData = FetchBuffer;
assign LineByteMask = '1;
// No need for this mux if the cache does not handle writes.
assign LineWriteData = FetchBuffer;
assign LineByteMask = '1;
end
/////////////////////////////////////////////////////////////////////////////////////////////
// Flush logic
@ -203,8 +203,8 @@ module cache #(parameter LINELEN, NUMLINES, NUMWAYS, LOGBWPL, WORDLEN, MUXINTE
assign FlushWayFlag = FlushWay[NUMWAYS-1];
end // block: flushlogic
else begin:flushlogic
assign FlushWayFlag = 0;
assign FlushAdrFlag = 0;
assign FlushWayFlag = 0;
assign FlushAdrFlag = 0;
end
/////////////////////////////////////////////////////////////////////////////////////////////

53
src/cache/cacheLRU.sv vendored
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@ -1,5 +1,5 @@
///////////////////////////////////////////
// dcache (data cache)
// cacheLRU.sv
//
// Written: Ross Thompson ross1728@gmail.com
// Created: 20 July 2021
@ -32,12 +32,11 @@
module cacheLRU
#(parameter NUMWAYS = 4, SETLEN = 9, OFFSETLEN = 5, NUMLINES = 128) (
input logic clk,
input logic reset,
input logic FlushStage, // Pipeline flush of second stage (prevent writes and bus operations)
input logic reset,
input logic CacheEn, // Enable the cache memory arrays. Disable hold read data constant
input logic [NUMWAYS-1:0] HitWay, // Which way is valid and matches PAdr's tag
input logic [NUMWAYS-1:0] ValidWay, // Which ways for a particular set are valid, ignores tag
input logic [SETLEN-1:0] CacheSet, // Cache address, the output of the address select mux, NextAdr, PAdr, or FlushAdr
input logic [SETLEN-1:0] CacheSet, // Cache address, the output of the address select mux, NextAdr, PAdr, or FlushAdr
input logic [SETLEN-1:0] PAdr, // Physical address
input logic LRUWriteEn, // Update the LRU state
input logic SetValid, // Set the dirty bit in the selected way and set
@ -90,16 +89,26 @@ module cacheLRU
assign WayExpanded[StartIndex : EndIndex] = {{DuplicationFactor}{WayEncoded[row]}};
end
genvar r, a, s;
genvar node;
assign LRUUpdate[NUMWAYS-2] = '1;
for(s = NUMWAYS-2; s >= NUMWAYS/2; s--) begin : enables
localparam p = NUMWAYS - s - 1;
localparam g = log2(p);
localparam t0 = s - p;
localparam t1 = t0 - 1;
localparam r = LOGNUMWAYS - g;
assign LRUUpdate[t0] = LRUUpdate[s] & ~WayEncoded[r];
assign LRUUpdate[t1] = LRUUpdate[s] & WayEncoded[r];
for(node = NUMWAYS-2; node >= NUMWAYS/2; node--) begin : enables
localparam ctr = NUMWAYS - node - 1;
localparam ctr_depth = log2(ctr);
localparam lchild = node - ctr;
localparam rchild = lchild - 1;
localparam r = LOGNUMWAYS - ctr_depth;
// the child node will be updated if its parent was updated and
// the WayEncoded bit was the correct value.
// The if statement is only there for coverage since LRUUpdate[root] is always 1.
if (node == NUMWAYS-2) begin
assign LRUUpdate[lchild] = ~WayEncoded[r];
assign LRUUpdate[rchild] = WayEncoded[r];
end
else begin
assign LRUUpdate[lchild] = LRUUpdate[node] & ~WayEncoded[r];
assign LRUUpdate[rchild] = LRUUpdate[node] & WayEncoded[r];
end
end
// The root node of the LRU tree will always be selected in LRUUpdate. No mux needed.
@ -107,15 +116,15 @@ module cacheLRU
mux2 #(1) LRUMuxes[NUMWAYS-3:0](CurrLRU[NUMWAYS-3:0], ~WayExpanded[NUMWAYS-3:0], LRUUpdate[NUMWAYS-3:0], NextLRU[NUMWAYS-3:0]);
// Compute next victim way.
for(s = NUMWAYS-2; s >= NUMWAYS/2; s--) begin
localparam t0 = 2*s - NUMWAYS;
for(node = NUMWAYS-2; node >= NUMWAYS/2; node--) begin
localparam t0 = 2*node - NUMWAYS;
localparam t1 = t0 + 1;
assign Intermediate[s] = CurrLRU[s] ? Intermediate[t0] : Intermediate[t1];
assign Intermediate[node] = CurrLRU[node] ? Intermediate[t0] : Intermediate[t1];
end
for(s = NUMWAYS/2-1; s >= 0; s--) begin
localparam int0 = (NUMWAYS/2-1-s)*2;
for(node = NUMWAYS/2-1; node >= 0; node--) begin
localparam int0 = (NUMWAYS/2-1-node)*2;
localparam int1 = int0 + 1;
assign Intermediate[s] = CurrLRU[s] ? int1[LOGNUMWAYS-1:0] : int0[LOGNUMWAYS-1:0];
assign Intermediate[node] = CurrLRU[node] ? int1[LOGNUMWAYS-1:0] : int0[LOGNUMWAYS-1:0];
end
logic [NUMWAYS-1:0] FirstZero;
@ -134,11 +143,9 @@ module cacheLRU
always_ff @(posedge clk) begin
if (reset) for (int set = 0; set < NUMLINES; set++) LRUMemory[set] <= '0;
if(CacheEn) begin
// if((InvalidateCache | FlushCache) & ~FlushStage) for (int set = 0; set < NUMLINES; set++) LRUMemory[set] <= '0;
if (LRUWriteEn & ~FlushStage) begin
if(LRUWriteEn)
LRUMemory[PAdr] <= NextLRU;
end
if(LRUWriteEn & ~FlushStage & (PAdr == CacheSet))
if(LRUWriteEn & (PAdr == CacheSet))
CurrLRU <= #1 NextLRU;
else
CurrLRU <= #1 LRUMemory[CacheSet];

42
src/cache/cachefsm.sv vendored
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@ -1,11 +1,11 @@
///////////////////////////////////////////
// dcache (data cache) fsm
// cachefsm.sv
//
// Written: Ross Thompson ross1728@gmail.com
// Created: 25 August 2021
// Modified: 20 January 2023
//
// Purpose: Controller for the dcache fsm
// Purpose: Controller for the cache fsm
//
// Documentation: RISC-V System on Chip Design Chapter 7 (Figure 7.14 and Table 7.1)
//
@ -89,13 +89,13 @@ module cachefsm #(parameter READ_ONLY_CACHE = 0) (
assign AMO = CacheAtomic[1] & (&CacheRW);
assign StoreAMO = AMO | CacheRW[0];
assign AnyMiss = (StoreAMO | CacheRW[1]) & ~CacheHit & ~InvalidateCache;
assign AnyUpdateHit = (StoreAMO) & CacheHit;
assign AnyHit = AnyUpdateHit | (CacheRW[1] & CacheHit);
assign AnyMiss = (StoreAMO | CacheRW[1]) & ~CacheHit & ~InvalidateCache; // exclusion-tag: icache storeAMO
assign AnyUpdateHit = (StoreAMO) & CacheHit; // exclusion-tag: icache storeAMO1
assign AnyHit = AnyUpdateHit | (CacheRW[1] & CacheHit); // exclusion-tag: icache AnyUpdateHit
assign FlushFlag = FlushAdrFlag & FlushWayFlag;
// outputs for the performance counters.
assign CacheAccess = (AMO | CacheRW[1] | CacheRW[0]) & CurrState == STATE_READY;
assign CacheAccess = (AMO | CacheRW[1] | CacheRW[0]) & CurrState == STATE_READY; // exclusion-tag: icache CacheW
assign CacheMiss = CacheAccess & ~CacheHit;
// special case on reset. When the fsm first exists reset the
@ -109,17 +109,18 @@ module cachefsm #(parameter READ_ONLY_CACHE = 0) (
always_comb begin
NextState = STATE_READY;
case (CurrState)
case (CurrState) // exclusion-tag: icache state-case
STATE_READY: if(InvalidateCache) NextState = STATE_READY;
else if(FlushCache & ~READ_ONLY_CACHE) NextState = STATE_FLUSH;
else if(AnyMiss & (READ_ONLY_CACHE | ~LineDirty)) NextState = STATE_FETCH;
else if(AnyMiss & LineDirty) NextState = STATE_WRITEBACK;
else if(AnyMiss & (READ_ONLY_CACHE | ~LineDirty)) NextState = STATE_FETCH; // exclusion-tag: icache FETCHStatement
else if(AnyMiss & LineDirty) NextState = STATE_WRITEBACK; // exclusion-tag: icache WRITEBACKStatement
else NextState = STATE_READY;
STATE_FETCH: if(CacheBusAck) NextState = STATE_WRITE_LINE;
else NextState = STATE_FETCH;
STATE_WRITE_LINE: NextState = STATE_READ_HOLD;
STATE_READ_HOLD: if(Stall) NextState = STATE_READ_HOLD;
else NextState = STATE_READY;
// exclusion-tag-start: icache case
STATE_WRITEBACK: if(CacheBusAck) NextState = STATE_FETCH;
else NextState = STATE_WRITEBACK;
// eviction needs a delay as the bus fsm does not correctly handle sending the write command at the same time as getting back the bus ack.
@ -129,13 +130,14 @@ module cachefsm #(parameter READ_ONLY_CACHE = 0) (
STATE_FLUSH_WRITEBACK: if(CacheBusAck & ~FlushFlag) NextState = STATE_FLUSH;
else if(CacheBusAck) NextState = STATE_READ_HOLD;
else NextState = STATE_FLUSH_WRITEBACK;
// exclusion-tag-end: icache case
default: NextState = STATE_READY;
endcase
end
// com back to CPU
assign CacheCommitted = (CurrState != STATE_READY) & ~(READ_ONLY_CACHE & CurrState == STATE_READ_HOLD);
assign CacheStall = (CurrState == STATE_READY & (FlushCache | AnyMiss)) |
assign CacheStall = (CurrState == STATE_READY & (FlushCache | AnyMiss)) | // exclusion-tag: icache StallStates
(CurrState == STATE_FETCH) |
(CurrState == STATE_WRITEBACK) |
(CurrState == STATE_WRITE_LINE) | // this cycle writes the sram, must keep stalling so the next cycle can read the next hit/miss unless its a write.
@ -143,12 +145,14 @@ module cachefsm #(parameter READ_ONLY_CACHE = 0) (
(CurrState == STATE_FLUSH_WRITEBACK);
// write enables internal to cache
assign SetValid = CurrState == STATE_WRITE_LINE;
assign SetDirty = (CurrState == STATE_READY & AnyUpdateHit) |
(CurrState == STATE_WRITE_LINE & (StoreAMO));
assign ClearDirty = (CurrState == STATE_WRITE_LINE & ~(StoreAMO)) |
(CurrState == STATE_FLUSH & LineDirty); // This is wrong in a multicore snoop cache protocal. Dirty must be cleared concurrently and atomically with writeback. For single core cannot clear after writeback on bus ack and change flushadr. Clears the wrong set.
// coverage off -item e 1 -fecexprrow 8
assign LRUWriteEn = (CurrState == STATE_READY & AnyHit) |
(CurrState == STATE_WRITE_LINE);
(CurrState == STATE_WRITE_LINE) & ~FlushStage;
// exclusion-tag-start: icache flushdirtycontrols
assign SetDirty = (CurrState == STATE_READY & AnyUpdateHit) | // exclusion-tag: icache SetDirty
(CurrState == STATE_WRITE_LINE & (StoreAMO));
assign ClearDirty = (CurrState == STATE_WRITE_LINE & ~(StoreAMO)) | // exclusion-tag: icache ClearDirty
(CurrState == STATE_FLUSH & LineDirty); // This is wrong in a multicore snoop cache protocal. Dirty must be cleared concurrently and atomically with writeback. For single core cannot clear after writeback on bus ack and change flushadr. Clears the wrong set.
// Flush and eviction controls
assign SelWriteback = (CurrState == STATE_WRITEBACK & ~CacheBusAck) |
(CurrState == STATE_READY & AnyMiss & LineDirty);
@ -162,20 +166,20 @@ module cachefsm #(parameter READ_ONLY_CACHE = 0) (
(CurrState == STATE_FLUSH_WRITEBACK & CacheBusAck);
assign FlushCntRst = (CurrState == STATE_FLUSH & FlushFlag & ~LineDirty) |
(CurrState == STATE_FLUSH_WRITEBACK & FlushFlag & CacheBusAck);
// exclusion-tag-end: icache flushdirtycontrols
// Bus interface controls
assign CacheBusRW[1] = (CurrState == STATE_READY & AnyMiss & ~LineDirty) |
assign CacheBusRW[1] = (CurrState == STATE_READY & AnyMiss & ~LineDirty) | // exclusion-tag: icache CacheBusRCauses
(CurrState == STATE_FETCH & ~CacheBusAck) |
(CurrState == STATE_WRITEBACK & CacheBusAck);
assign CacheBusRW[0] = (CurrState == STATE_READY & AnyMiss & LineDirty) |
assign CacheBusRW[0] = (CurrState == STATE_READY & AnyMiss & LineDirty) | // exclusion-tag: icache CacheBusW
(CurrState == STATE_WRITEBACK & ~CacheBusAck) |
(CurrState == STATE_FLUSH_WRITEBACK & ~CacheBusAck);
assign SelAdr = (CurrState == STATE_READY & (StoreAMO | AnyMiss)) | // changes if store delay hazard removed
assign SelAdr = (CurrState == STATE_READY & (StoreAMO | AnyMiss)) | // exclusion-tag: icache SelAdrCauses // changes if store delay hazard removed
(CurrState == STATE_FETCH) |
(CurrState == STATE_WRITEBACK) |
(CurrState == STATE_WRITE_LINE) |
resetDelay;
assign SelFetchBuffer = CurrState == STATE_WRITE_LINE | CurrState == STATE_READ_HOLD;
assign CacheEn = (~Stall | FlushCache | AnyMiss) | (CurrState != STATE_READY) | reset | InvalidateCache;

11
src/cache/cacheway.sv vendored
View file

@ -97,18 +97,13 @@ module cacheway #(parameter NUMLINES=512, LINELEN = 256, TAGLEN = 26,
/////////////////////////////////////////////////////////////////////////////////////////////
assign SetValidWay = SetValid & SelData;
assign SetDirtyWay = SetDirty & SelData; // exclusion-tag: icache SetDirtyWay
assign ClearDirtyWay = ClearDirty & SelData;
if (!READ_ONLY_CACHE) begin
assign SetDirtyWay = SetDirty & SelData;
assign SelectedWriteWordEn = (SetValidWay | SetDirtyWay) & ~FlushStage;
end
else begin
assign SelectedWriteWordEn = SetValidWay & ~FlushStage;
end
assign SelectedWriteWordEn = (SetValidWay | SetDirtyWay) & ~FlushStage; // exclusion-tag: icache SelectedWiteWordEn
assign SetValidEN = SetValidWay & ~FlushStage; // exclusion-tag: icache SetValidEN
// If writing the whole line set all write enables to 1, else only set the correct word.
assign FinalByteMask = SetValidWay ? '1 : LineByteMask; // OR
assign SetValidEN = SetValidWay & ~FlushStage;
/////////////////////////////////////////////////////////////////////////////////////////////
// Tag Array

5
src/cache/subcachelineread.sv vendored
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@ -1,11 +1,11 @@
///////////////////////////////////////////
// subcachelineread
// subcachelineread.sv
//
// Written: Ross Thompson ross1728@gmail.com
// Created: 4 February 2022
// Modified: 20 January 2023
//
// Purpose: Muxes the cache line downto the word size. Also include possilbe save/restore registers/muxes.
// Purpose: Muxes the cache line down to the word size. Also include possible save/restore registers/muxes.
//
// Documentation: RISC-V System on Chip Design Chapter 7
@ -31,7 +31,6 @@
module subcachelineread #(parameter LINELEN, WORDLEN,
parameter MUXINTERVAL )( // The number of bits between mux. Set to 16 for I$ to support compressed. Set to `LLEN for D$
input logic [$clog2(LINELEN/8) - $clog2(MUXINTERVAL/8) - 1 : 0] PAdr, // Physical address
input logic [LINELEN-1:0] ReadDataLine,// Read data of the whole cacheline
output logic [WORDLEN-1:0] ReadDataWord // read data of selected word.

28
src/ebu/ahbcacheinterface.sv
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@ -38,27 +38,27 @@ module ahbcacheinterface #(
)(
input logic HCLK, HRESETn,
// bus interface controls
input logic HREADY, // AHB peripheral ready
input logic HREADY, // AHB peripheral ready
output logic [1:0] HTRANS, // AHB transaction type, 00: IDLE, 10 NON_SEQ, 11 SEQ
output logic HWRITE, // AHB 0: Read operation 1: Write operation
output logic [2:0] HSIZE, // AHB transaction width
output logic [2:0] HBURST, // AHB burst length
// bus interface buses
input logic [`AHBW-1:0] HRDATA, // AHB read data
input logic [`AHBW-1:0] HRDATA, // AHB read data
output logic [`PA_BITS-1:0] HADDR, // AHB address
output logic [`AHBW-1:0] HWDATA, // AHB write data
output logic [`AHBW/8-1:0] HWSTRB, // AHB byte mask
// cache interface
input logic [`PA_BITS-1:0] CacheBusAdr, // Address of cache line
input logic [`LLEN-1:0] CacheReadDataWordM, // one word of cache line during a writeback
input logic CacheableOrFlushCacheM, // Memory operation is cacheable or flushing D$
input logic Cacheable, // Memory operation is cachable
input logic [1:0] CacheBusRW, // Cache bus operation, 01: writeback, 10: fetch
output logic CacheBusAck, // Handshack to $ indicating bus transaction completed
output logic [LINELEN-1:0] FetchBuffer, // Register to hold beats of cache line as the arrive from bus
output logic [AHBWLOGBWPL-1:0] BeatCount, // Beat position within the cache line in the Address Phase
output logic SelBusBeat, // Tells the cache to select the word from ReadData or WriteData from BeatCount rather than PAdr
input logic [`PA_BITS-1:0] CacheBusAdr, // Address of cache line
input logic [`LLEN-1:0] CacheReadDataWordM, // One word of cache line during a writeback
input logic CacheableOrFlushCacheM, // Memory operation is cacheable or flushing D$
input logic Cacheable, // Memory operation is cachable
input logic [1:0] CacheBusRW, // Cache bus operation, 01: writeback, 10: fetch
output logic CacheBusAck, // Handshake to $ indicating bus transaction completed
output logic [LINELEN-1:0] FetchBuffer, // Register to hold beats of cache line as the arrive from bus
output logic [AHBWLOGBWPL-1:0] BeatCount, // Beat position within the cache line in the Address Phase
output logic SelBusBeat, // Tells the cache to select the word from ReadData or WriteData from BeatCount rather than PAdr
// uncached interface
input logic [`PA_BITS-1:0] PAdr, // Physical address of uncached memory operation
@ -77,7 +77,7 @@ module ahbcacheinterface #(
logic [`PA_BITS-1:0] LocalHADDR; // Address after selecting between cached and uncached operation
logic [AHBWLOGBWPL-1:0] BeatCountDelayed; // Beat within the cache line in the second (Data) cache stage
logic CaptureEn; // Enable updating the Fetch buffer with valid data from HRDATA
logic [`AHBW/8-1:0] BusByteMaskM; // Byte enables within a word. For cache request all 1s
logic [`AHBW/8-1:0] BusByteMaskM; // Byte enables within a word. For cache request all 1s
logic [`AHBW-1:0] PreHWDATA; // AHB Address phase write data
genvar index;
@ -107,7 +107,7 @@ module ahbcacheinterface #(
end else assign CacheReadDataWordAHB = CacheReadDataWordM[`AHBW-1:0];
mux2 #(`AHBW) HWDATAMux(.d0(CacheReadDataWordAHB), .d1(WriteDataM[`AHBW-1:0]),
.s(~(CacheableOrFlushCacheM)), .y(PreHWDATA));
.s(~(CacheableOrFlushCacheM)), .y(PreHWDATA));
flopen #(`AHBW) wdreg(HCLK, HREADY, PreHWDATA, HWDATA); // delay HWDATA by 1 cycle per spec
// *** bummer need a second byte mask for bus as it is AHBW rather than LLEN.
@ -119,5 +119,5 @@ module ahbcacheinterface #(
buscachefsm #(BeatCountThreshold, AHBWLOGBWPL, READ_ONLY_CACHE) AHBBuscachefsm(
.HCLK, .HRESETn, .Flush, .BusRW, .Stall, .BusCommitted, .BusStall, .CaptureEn, .SelBusBeat,
.CacheBusRW, .CacheBusAck, .BeatCount, .BeatCountDelayed,
.HREADY, .HTRANS, .HWRITE, .HBURST);
.HREADY, .HTRANS, .HWRITE, .HBURST);
endmodule

16
src/ebu/ahbinterface.sv
View file

@ -32,21 +32,21 @@
module ahbinterface #(
parameter LSU = 0 // 1: LSU bus width is `XLEN, 0: IFU bus width is 32 bits
)(
input logic HCLK, HRESETn,
input logic HCLK, HRESETn,
// bus interface
input logic HREADY, // AHB peripheral ready
input logic HREADY, // AHB peripheral ready
output logic [1:0] HTRANS, // AHB transaction type, 00: IDLE, 10 NON_SEQ, 11 SEQ
output logic HWRITE, // AHB 0: Read operation 1: Write operation
input logic [`XLEN-1:0] HRDATA, // AHB read data
input logic [`XLEN-1:0] HRDATA, // AHB read data
output logic [`XLEN-1:0] HWDATA, // AHB write data
output logic [`XLEN/8-1:0] HWSTRB, // AHB byte mask
// lsu/ifu interface
input logic Stall, // Core pipeline is stalled
input logic Flush, // Pipeline stage flush. Prevents bus transaction from starting
input logic [1:0] BusRW, // Memory operation read/write control: 10: read, 01: write
input logic [`XLEN/8-1:0] ByteMask, // Bytes enables within a word
input logic [`XLEN-1:0] WriteData, // IEU write data for a store
input logic Stall, // Core pipeline is stalled
input logic Flush, // Pipeline stage flush. Prevents bus transaction from starting
input logic [1:0] BusRW, // Memory operation read/write control: 10: read, 01: write
input logic [`XLEN/8-1:0] ByteMask, // Bytes enables within a word
input logic [`XLEN-1:0] WriteData, // IEU write data for a store
output logic BusStall, // Bus is busy with an in flight memory operation
output logic BusCommitted, // Bus is busy with an in flight memory operation and it is not safe to take an interrupt
output logic [(LSU ? `XLEN : 32)-1:0] FetchBuffer // Register to hold HRDATA after arriving from the bus

30
src/ebu/buscachefsm.sv
View file

@ -40,29 +40,29 @@ module buscachefsm #(
input logic HRESETn,
// IEU interface
input logic Stall, // Core pipeline is stalled
input logic Flush, // Pipeline stage flush. Prevents bus transaction from starting
input logic [1:0] BusRW, // Uncached memory operation read/write control: 10: read, 01: write
output logic BusStall, // Bus is busy with an in flight memory operation
output logic BusCommitted, // Bus is busy with an in flight memory operation and it is not safe to take an interrupt
input logic Stall, // Core pipeline is stalled
input logic Flush, // Pipeline stage flush. Prevents bus transaction from starting
input logic [1:0] BusRW, // Uncached memory operation read/write control: 10: read, 01: write
output logic BusStall, // Bus is busy with an in flight memory operation
output logic BusCommitted, // Bus is busy with an in flight memory operation and it is not safe to take an interrupt
// ahb cache interface locals.
output logic CaptureEn, // Enable updating the Fetch buffer with valid data from HRDATA
output logic CaptureEn, // Enable updating the Fetch buffer with valid data from HRDATA
// cache interface
input logic [1:0] CacheBusRW, // Cache bus operation, 01: writeback, 10: fetch
output logic CacheBusAck, // Handshack to $ indicating bus transaction completed
input logic [1:0] CacheBusRW, // Cache bus operation, 01: writeback, 10: fetch
output logic CacheBusAck, // Handshack to $ indicating bus transaction completed
// lsu interface
output logic [AHBWLOGBWPL-1:0] BeatCount, // Beat position within the cache line in the Address Phase
output logic [AHBWLOGBWPL-1:0] BeatCountDelayed, // Beat within the cache line in the second (Data) cache stage
output logic SelBusBeat, // Tells the cache to select the word from ReadData or WriteData from BeatCount rather than PAdr
output logic SelBusBeat, // Tells the cache to select the word from ReadData or WriteData from BeatCount rather than PAdr
// BUS interface
input logic HREADY, // AHB peripheral ready
output logic [1:0] HTRANS, // AHB transaction type, 00: IDLE, 10 NON_SEQ, 11 SEQ
output logic HWRITE, // AHB 0: Read operation 1: Write operation
output logic [2:0] HBURST // AHB burst length
input logic HREADY, // AHB peripheral ready
output logic [1:0] HTRANS, // AHB transaction type, 00: IDLE, 10 NON_SEQ, 11 SEQ
output logic HWRITE, // AHB 0: Read operation 1: Write operation
output logic [2:0] HBURST // AHB burst length
);
typedef enum logic [2:0] {ADR_PHASE, DATA_PHASE, MEM3, CACHE_FETCH, CACHE_WRITEBACK} busstatetype;
@ -78,8 +78,8 @@ module buscachefsm #(
logic CacheAccess;
always_ff @(posedge HCLK)
if (~HRESETn | Flush) CurrState <= #1 ADR_PHASE;
else CurrState <= #1 NextState;
if (~HRESETn | Flush) CurrState <= #1 ADR_PHASE;
else CurrState <= #1 NextState;
always_comb begin
case(CurrState)

36
src/ebu/controllerinput.sv
View file

@ -1,5 +1,5 @@
///////////////////////////////////////////
// controller input stage
// controllerinput.sv
//
// Written: Ross Thompson ross1728@gmail.com
// Created: August 31, 2022
@ -36,26 +36,26 @@
module controllerinput #(
parameter SAVE_ENABLED = 1 // 1: Save manager inputs if Save = 1, 0: Don't save inputs
)(
input logic HCLK,
input logic HRESETn,
input logic Save, // Two or more managers requesting (HTRANS != 00) at the same time. Save the non-granted manager inputs
input logic Restore, // Restore a saved manager inputs when it is finally granted
input logic Disable, // Supress HREADY to the non-granted manager
input logic HCLK,
input logic HRESETn,
input logic Save, // Two or more managers requesting (HTRANS != 00) at the same time. Save the non-granted manager inputs
input logic Restore, // Restore a saved manager inputs when it is finally granted
input logic Disable, // Suppress HREADY to the non-granted manager
output logic Request, // This manager is making a request
// controller input
input logic [1:0] HTRANSIn, // Manager input. AHB transaction type, 00: IDLE, 10 NON_SEQ, 11 SEQ
input logic HWRITEIn, // Manager input. AHB 0: Read operation 1: Write operation
input logic [2:0] HSIZEIn, // Manager input. AHB transaction width
input logic [2:0] HBURSTIn, // Manager input. AHB burst length
input logic [`PA_BITS-1:0] HADDRIn, // Manager input. AHB address
output logic HREADYOut, // Indicate to manager the peripherial is not busy and another manager does not have priority
input logic [1:0] HTRANSIn, // Manager input. AHB transaction type, 00: IDLE, 10 NON_SEQ, 11 SEQ
input logic HWRITEIn, // Manager input. AHB 0: Read operation 1: Write operation
input logic [2:0] HSIZEIn, // Manager input. AHB transaction width
input logic [2:0] HBURSTIn, // Manager input. AHB burst length
input logic [`PA_BITS-1:0] HADDRIn, // Manager input. AHB address
output logic HREADYOut, // Indicate to manager the peripheral is not busy and another manager does not have priority
// controller output
output logic [1:0] HTRANSOut, // Aribrated manager transaction. AHB transaction type, 00: IDLE, 10 NON_SEQ, 11 SEQ
output logic HWRITEOut, // Aribrated manager transaction. AHB 0: Read operation 1: Write operation
output logic [2:0] HSIZEOut, // Aribrated manager transaction. AHB transaction width
output logic [2:0] HBURSTOut, // Aribrated manager transaction. AHB burst length
output logic [`PA_BITS-1:0] HADDROut, // Aribrated manager transaction. AHB address
input logic HREADYIn // Peripherial ready
output logic [1:0] HTRANSOut, // Arbitrated manager transaction. AHB transaction type, 00: IDLE, 10 NON_SEQ, 11 SEQ
output logic HWRITEOut, // Arbitrated manager transaction. AHB 0: Read operation 1: Write operation
output logic [2:0] HSIZEOut, // Arbitrated manager transaction. AHB transaction width
output logic [2:0] HBURSTOut, // Arbitrated manager transaction. AHB burst length
output logic [`PA_BITS-1:0] HADDROut, // Arbitrated manager transaction. AHB address
input logic HREADYIn // Peripheral ready
);
logic HWRITESave;

6
src/ebu/ebufsmarb.sv
View file

@ -1,5 +1,5 @@
///////////////////////////////////////////
// ebufsmarb
// ebufsmarb.sv
//
// Written: Ross Thompson ross1728@gmail.com
// Created: 23 January 2023
@ -55,7 +55,7 @@ module ebufsmarb (
logic IFUReqD; // 1 cycle delayed IFU request. Part of arbitration
logic FinalBeat, FinalBeatD; // Indicates the last beat of a burst
logic BeatCntEn;
logic [3:0] BeatCount; // Position within a burst transfer
logic [3:0] BeatCount; // Position within a burst transfer
logic BeatCntReset;
logic [3:0] Threshold; // Number of beats derived from HBURST
@ -86,7 +86,7 @@ module ebufsmarb (
// Controller 1 (LSU)
// When both the IFU and LSU request at the same time, the FSM will go into the arbitrate state.
// Once the LSU request is done the fsm returns to IDLE. To prevent the LSU from regaining
// priority and re issuing the same memroy operation, the delayed IFUReqD squashes the LSU request.
// priority and re-issuing the same memory operation, the delayed IFUReqD squashes the LSU request.
// This is necessary because the pipeline is stalled for the entire duration of both transactions,
// and the LSU memory request will stil be active.
flopr #(1) ifureqreg(HCLK, ~HRESETn, IFUReq, IFUReqD);

44
src/fpu/fdivsqrt/fdivsqrtexpcalc.sv
View file

@ -1,5 +1,5 @@
///////////////////////////////////////////
// fdivsqrtpreproc.sv
// fdivsqrtexpcalc.sv
//
// Written: David_Harris@hmc.edu, me@KatherineParry.com, cturek@hmc.edu
// Modified:13 January 2022
@ -30,11 +30,11 @@
module fdivsqrtexpcalc(
input logic [`FMTBITS-1:0] Fmt,
input logic [`NE-1:0] Xe, Ye,
input logic Sqrt,
input logic XZero,
input logic [`DIVBLEN:0] ell, m,
output logic [`NE+1:0] Qe
input logic [`NE-1:0] Xe, Ye,
input logic Sqrt,
input logic XZero,
input logic [`DIVBLEN:0] ell, m,
output logic [`NE+1:0] Qe
);
logic [`NE-2:0] Bias;
logic [`NE+1:0] SXExp;
@ -42,28 +42,28 @@ module fdivsqrtexpcalc(
logic [`NE+1:0] DExp;
if (`FPSIZES == 1) begin
assign Bias = (`NE-1)'(`BIAS);
assign Bias = (`NE-1)'(`BIAS);
end else if (`FPSIZES == 2) begin
assign Bias = Fmt ? (`NE-1)'(`BIAS) : (`NE-1)'(`BIAS1);
assign Bias = Fmt ? (`NE-1)'(`BIAS) : (`NE-1)'(`BIAS1);
end else if (`FPSIZES == 3) begin
always_comb
case (Fmt)
`FMT: Bias = (`NE-1)'(`BIAS);
`FMT1: Bias = (`NE-1)'(`BIAS1);
`FMT2: Bias = (`NE-1)'(`BIAS2);
default: Bias = 'x;
endcase
always_comb
case (Fmt)
`FMT: Bias = (`NE-1)'(`BIAS);
`FMT1: Bias = (`NE-1)'(`BIAS1);
`FMT2: Bias = (`NE-1)'(`BIAS2);
default: Bias = 'x;
endcase
end else if (`FPSIZES == 4) begin
always_comb
case (Fmt)
2'h3: Bias = (`NE-1)'(`Q_BIAS);
2'h1: Bias = (`NE-1)'(`D_BIAS);
2'h0: Bias = (`NE-1)'(`S_BIAS);
2'h2: Bias = (`NE-1)'(`H_BIAS);
endcase
always_comb
case (Fmt)
2'h3: Bias = (`NE-1)'(`Q_BIAS);
2'h1: Bias = (`NE-1)'(`D_BIAS);
2'h0: Bias = (`NE-1)'(`S_BIAS);
2'h2: Bias = (`NE-1)'(`H_BIAS);
endcase
end
assign SXExp = {2'b0, Xe} - {{(`NE+1-`DIVBLEN){1'b0}}, ell} - (`NE+2)'(`BIAS);
assign SExp = {SXExp[`NE+1], SXExp[`NE+1:1]} + {2'b0, Bias};

2
src/fpu/fdivsqrt/fdivsqrtfgen2.sv
View file

@ -29,7 +29,7 @@
`include "wally-config.vh"
module fdivsqrtfgen2 (
input logic up, uz,
input logic up, uz,
input logic [`DIVb+3:0] C, U, UM,
output logic [`DIVb+3:0] F
);

2
src/fpu/fdivsqrt/fdivsqrtfgen4.sv
View file

@ -29,7 +29,7 @@
`include "wally-config.vh"
module fdivsqrtfgen4 (
input logic [3:0] udigit,
input logic [3:0] udigit,
input logic [`DIVb+3:0] C, U, UM,
output logic [`DIVb+3:0] F
);

34
src/fpu/fdivsqrt/fdivsqrtfsm.sv
View file

@ -29,24 +29,24 @@
`include "wally-config.vh"
module fdivsqrtfsm(
input logic clk,
input logic reset,
input logic clk,
input logic reset,
input logic [`FMTBITS-1:0] FmtE,
input logic XInfE, YInfE,
input logic XZeroE, YZeroE,
input logic XNaNE, YNaNE,
input logic FDivStartE, IDivStartE,
input logic XsE,
input logic SqrtE,
input logic StallM,
input logic FlushE,
input logic WZeroE,
input logic IntDivE,
input logic [`DIVBLEN:0] nE,
input logic ISpecialCaseE,
output logic IFDivStartE,
output logic FDivBusyE, FDivDoneE,
output logic SpecialCaseM
input logic XInfE, YInfE,
input logic XZeroE, YZeroE,
input logic XNaNE, YNaNE,
input logic FDivStartE, IDivStartE,
input logic XsE,
input logic SqrtE,
input logic StallM,
input logic FlushE,
input logic WZeroE,
input logic IntDivE,
input logic [`DIVBLEN:0] nE,
input logic ISpecialCaseE,
output logic IFDivStartE,
output logic FDivBusyE, FDivDoneE,
output logic SpecialCaseM
);
typedef enum logic [1:0] {IDLE, BUSY, DONE} statetype;

8
src/fpu/fdivsqrt/fdivsqrtiter.sv
View file

@ -29,10 +29,10 @@
`include "wally-config.vh"
module fdivsqrtiter(
input logic clk,
input logic IFDivStartE,
input logic FDivBusyE,
input logic SqrtE,
input logic clk,
input logic IFDivStartE,
input logic FDivBusyE,
input logic SqrtE,
input logic [`DIVb+3:0] X,
input logic [`DIVb-1:0] DPreproc,
output logic [`DIVb-1:0] D,

2
src/fpu/fdivsqrt/fdivsqrtpostproc.sv
View file

@ -112,7 +112,7 @@ module fdivsqrtpostproc(
// Select quotient or remainder and do normalization shift
mux2 #(`DIVBLEN+1) normshiftmux(((`DIVBLEN+1)'(`DIVb) - (nM * (`DIVBLEN+1)'(`LOGR))), (mM + (`DIVBLEN+1)'(`DIVa)), RemOpM, NormShiftM);
mux2 #(`DIVb+4) presresultmux(NormQuotM, NormRemM, RemOpM, PreResultM);
mux2 #(`DIVb+4) presresultmux(NormQuotM, NormRemM, RemOpM, PreResultM);
assign PreIntResultM = $signed(PreResultM >>> NormShiftM);
// special case logic

2
src/fpu/fdivsqrt/fdivsqrtqsel2.sv
View file

@ -30,7 +30,7 @@
module fdivsqrtqsel2 (
input logic [3:0] ps, pc,
output logic up, uz, un
output logic up, uz, un
);
logic [3:0] p, g;

6
src/fpu/fdivsqrt/fdivsqrtstage4.sv
View file

@ -31,7 +31,7 @@
module fdivsqrtstage4 (
input logic [`DIVb-1:0] D,
input logic [`DIVb+3:0] DBar, D2, DBar2,
input logic [`DIVb:0] U,UM,
input logic [`DIVb:0] U,UM,
input logic [`DIVb+3:0] WS, WC,
input logic [`DIVb+1:0] C,
input logic SqrtE, j1,
@ -58,8 +58,8 @@ module fdivsqrtstage4 (
// 0000 = 0
// 0010 = -1
// 0001 = -2
assign Smsbs = U[`DIVb:`DIVb-4];
assign Dmsbs = D[`DIVb-1:`DIVb-3];
assign Smsbs = U[`DIVb:`DIVb-4];
assign Dmsbs = D[`DIVb-1:`DIVb-3];
assign WCmsbs = WC[`DIVb+3:`DIVb-4];
assign WSmsbs = WS[`DIVb+3:`DIVb-4];

6
src/fpu/fdivsqrt/fdivsqrtuotfc2.sv
View file

@ -32,10 +32,10 @@
// Unified OTFC, Radix 2 //
///////////////////////////////
module fdivsqrtuotfc2(
input logic up, un,
input logic up, un,
input logic [`DIVb+1:0] C,
input logic [`DIVb:0] U, UM,
output logic [`DIVb:0] UNext, UMNext
input logic [`DIVb:0] U, UM,
output logic [`DIVb:0] UNext, UMNext
);
// The on-the-fly converter transfers the divsqrt
// bits to the quotient as they come.

2
src/fpu/fdivsqrt/fdivsqrtuotfc4.sv
View file

@ -29,7 +29,7 @@
`include "wally-config.vh"
module fdivsqrtuotfc4(
input logic [3:0] udigit,
input logic [3:0] udigit,
input logic [`DIVb:0] U, UM,
input logic [`DIVb:0] C,
output logic [`DIVb:0] UNext, UMNext

2
src/generic/lzc.sv
View file

@ -24,7 +24,7 @@
////////////////////////////////////////////////////////////////////////////////////////////////
module lzc #(parameter WIDTH = 1) (
input logic [WIDTH-1:0] num, // number to count the leading zeroes of
input logic [WIDTH-1:0] num, // number to count the leading zeroes of
output logic [$clog2(WIDTH+1)-1:0] ZeroCnt // the number of leading zeroes
);

2
src/generic/mux.sv
View file

@ -40,7 +40,7 @@ module mux3 #(parameter WIDTH = 8) (
input logic [1:0] s,
output logic [WIDTH-1:0] y);
assign y = s[1] ? d2 : (s[0] ? d1 : d0);
assign y = s[1] ? d2 : (s[0] ? d1 : d0); // exclusion-tag: mux3
endmodule
module mux4 #(parameter WIDTH = 8) (

2
src/generic/onehotdecoder.sv
View file

@ -1,5 +1,5 @@
///////////////////////////////////////////
// oneHotDecoder.sv
// onehotdecoder.sv
//
// Written: ross1728@gmail.com July 09, 2021
// Modified:

14
src/hazard/hazard.sv
View file

@ -30,13 +30,13 @@
module hazard (
// Detect hazards
input logic BPWrongE, CSRWriteFenceM, RetM, TrapM,
input logic LoadStallD, StoreStallD, MDUStallD, CSRRdStallD,
input logic LSUStallM, IFUStallF,
input logic FCvtIntStallD, FPUStallD,
input logic DivBusyE, FDivBusyE,
input logic EcallFaultM, BreakpointFaultM,
input logic wfiM, IntPendingM,
input logic BPWrongE, CSRWriteFenceM, RetM, TrapM,
input logic LoadStallD, StoreStallD, MDUStallD, CSRRdStallD,
input logic LSUStallM, IFUStallF,
input logic FCvtIntStallD, FPUStallD,
input logic DivBusyE, FDivBusyE,
input logic EcallFaultM, BreakpointFaultM,
input logic wfiM, IntPendingM,
// Stall & flush outputs
output logic StallF, StallD, StallE, StallM, StallW,
output logic FlushD, FlushE, FlushM, FlushW

2
src/ieu/bmu/byte.sv
View file

@ -31,7 +31,7 @@
module byteUnit #(parameter WIDTH=32) (
input logic [WIDTH-1:0] A, // Operands
input logic ByteSelect, // LSB of Immediate
input logic ByteSelect, // LSB of Immediate
output logic [WIDTH-1:0] ByteResult); // rev8, orcb result
logic [WIDTH-1:0] OrcBResult, Rev8Result;

4
src/ieu/bmu/cnt.sv
View file

@ -32,8 +32,8 @@
module cnt #(parameter WIDTH = 32) (
input logic [WIDTH-1:0] A, RevA, // Operands
input logic [1:0] B, // Last 2 bits of immediate
input logic W64, // Indicates word operation
input logic [1:0] B, // Last 2 bits of immediate
input logic W64, // Indicates word operation
output logic [WIDTH-1:0] CntResult // count result
);

2
src/ieu/bmu/ext.sv
View file

@ -32,7 +32,7 @@
module ext #(parameter WIDTH = 32) (
input logic [WIDTH-1:0] A, // Operands
input logic [1:0] ExtSelect, // B[2], B[0] of immediate
input logic [1:0] ExtSelect, // B[2], B[0] of immediate
output logic [WIDTH-1:0] ExtResult); // Extend Result
logic [WIDTH-1:0] sexthResult, zexthResult, sextbResult;

2
src/ieu/bmu/popcnt.sv
View file

@ -27,7 +27,7 @@
////////////////////////////////////////////////////////////////////////////////////////////////
module popcnt #(parameter WIDTH = 32) (
input logic [WIDTH-1:0] num, // number to count total ones
input logic [WIDTH-1:0] num, // number to count total ones
output logic [$clog2(WIDTH):0] PopCnt // the total number of ones
);

2
src/ieu/ieu.sv
View file

@ -29,7 +29,7 @@
`include "wally-config.vh"
module ieu (
input logic clk, reset,
input logic clk, reset,
// Decode stage signals
input logic [31:0] InstrD, // Instruction
input logic IllegalIEUFPUInstrD, // Illegal instruction

6
src/ieu/shifter.sv
View file

@ -35,9 +35,9 @@ module shifter (
input logic Right, Rotate, W64, SubArith, // Shift right, rotate, W64-type operation, arithmetic shift
output logic [`XLEN-1:0] Y); // Shifted result
logic [2*`XLEN-2:0] Z, ZShift; // Input to funnel shifter, shifted amount before truncated to 32 or 64 bits
logic [`LOG_XLEN-1:0] TruncAmt, Offset; // Shift amount adjusted for RV64, right-shift amount
logic Sign; // Sign bit for sign extension
logic [2*`XLEN-2:0] Z, ZShift; // Input to funnel shifter, shifted amount before truncated to 32 or 64 bits
logic [`LOG_XLEN-1:0] TruncAmt, Offset; // Shift amount adjusted for RV64, right-shift amount
logic Sign; // Sign bit for sign extension
assign Sign = A[`XLEN-1] & SubArith; // sign bit for sign extension
if (`XLEN==32) begin // rv32

26
src/ifu/bpred/bpred.sv
View file

@ -48,25 +48,25 @@ module bpred (
input logic [`XLEN-1:0] PCE, // Execution stage instruction address
input logic [`XLEN-1:0] PCM, // Memory stage instruction address
input logic [31:0] PostSpillInstrRawF, // Instruction
input logic [31:0] PostSpillInstrRawF, // Instruction
// Branch and jump outcome
input logic InstrValidD, InstrValidE,
input logic InstrValidD, InstrValidE,
input logic BranchD, BranchE,
input logic JumpD, JumpE,
input logic PCSrcE, // Executation stage branch is taken
input logic [`XLEN-1:0] IEUAdrE, // The branch/jump target address
input logic [`XLEN-1:0] IEUAdrM, // The branch/jump target address
input logic [`XLEN-1:0] PCLinkE, // The address following the branch instruction. (AKA Fall through address)
input logic PCSrcE, // Executation stage branch is taken
input logic [`XLEN-1:0] IEUAdrE, // The branch/jump target address
input logic [`XLEN-1:0] IEUAdrM, // The branch/jump target address
input logic [`XLEN-1:0] PCLinkE, // The address following the branch instruction. (AKA Fall through address)
output logic [3:0] InstrClassM, // The valid instruction class. 1-hot encoded as call, return, jr (not return), j, br
// Report branch prediction status
output logic BPWrongE, // Prediction is wrong
output logic BPWrongM, // Prediction is wrong
output logic BPWrongE, // Prediction is wrong
output logic BPWrongM, // Prediction is wrong
output logic BPDirPredWrongM, // Prediction direction is wrong
output logic BTAWrongM, // Prediction target wrong
output logic BTAWrongM, // Prediction target wrong
output logic RASPredPCWrongM, // RAS prediction is wrong
output logic IClassWrongM // Class prediction is wrong
output logic IClassWrongM // Class prediction is wrong
);
logic [1:0] BPDirPredF;
@ -187,7 +187,7 @@ module bpred (
// Correct branch/jump target.
mux2 #(`XLEN) pccorrectemux(PCLinkE, IEUAdrE, PCSrcE, PCCorrectE);
// If the fence/csrw was predicted as a taken branch then we select PCF, rather PCE.
// If the fence/csrw was predicted as a taken branch then we select PCF, rather than PCE.
// Effectively this is PCM+4 or the non-existant PCLinkM
if(`INSTR_CLASS_PRED) mux2 #(`XLEN) pcmuxBPWrongInvalidateFlush(PCE, PCF, BPWrongM, NextValidPCE);
else assign NextValidPCE = PCE;
@ -201,11 +201,11 @@ module bpred (
// 3. target ras (ras target wrong / class[2])
// 4. direction (br dir wrong / class[0])
// Unforuantely we can't use PCD to infer the correctness of the BTB or RAS because the class prediction
// Unfortunately we can't use PCD to infer the correctness of the BTB or RAS because the class prediction
// could be wrong or the fall through address selected for branch predict not taken.
// By pipeline the BTB's PC and RAS address through the pipeline we can measure the accuracy of
// both without the above inaccuracies.
// **** use BPBTAWrongM from BTB.
// **** use BPBTAWrongM from BTB.
assign BTAWrongE = (BPBTAE != IEUAdrE) & (BranchE | JumpE & ~ReturnE) & PCSrcE;
assign RASPredPCWrongE = (RASPCE != IEUAdrE) & ReturnE & PCSrcE;

22
src/ifu/bpred/btb.sv
View file

@ -1,7 +1,7 @@
///////////////////////////////////////////
// btb.sv
//
// Written: Ross Thomposn ross1728@gmail.com
// Written: Ross Thompson ross1728@gmail.com
// Created: February 15, 2021
// Modified: 24 January 2023
//
@ -34,19 +34,19 @@ module btb #(parameter Depth = 10 ) (
input logic clk,
input logic reset,
input logic StallF, StallD, StallE, StallM, StallW, FlushD, FlushE, FlushM, FlushW,
input logic [`XLEN-1:0] PCNextF, PCF, PCD, PCE, PCM,// PC at various stages
output logic [`XLEN-1:0] BPBTAF, // BTB's guess at PC
input logic [`XLEN-1:0] PCNextF, PCF, PCD, PCE, PCM, // PC at various stages
output logic [`XLEN-1:0] BPBTAF, // BTB's guess at PC
output logic [`XLEN-1:0] BPBTAD,
output logic [`XLEN-1:0] BPBTAE,
output logic [3:0] BTBIClassF, // BTB's guess at instruction class
output logic [3:0] BTBIClassF, // BTB's guess at instruction class
// update
input logic IClassWrongM, // BTB's instruction class guess was wrong
input logic IClassWrongM, // BTB's instruction class guess was wrong
input logic IClassWrongE,
input logic [`XLEN-1:0] IEUAdrE, // Branch/jump target address to insert into btb
input logic [`XLEN-1:0] IEUAdrM, // Branch/jump target address to insert into btb
input logic [3:0] InstrClassD, // Instruction class to insert into btb
input logic [3:0] InstrClassE, // Instruction class to insert into btb
input logic [3:0] InstrClassM, // Instruction class to insert into btb
input logic [`XLEN-1:0] IEUAdrE, // Branch/jump target address to insert into btb
input logic [`XLEN-1:0] IEUAdrM, // Branch/jump target address to insert into btb
input logic [3:0] InstrClassD, // Instruction class to insert into btb
input logic [3:0] InstrClassE, // Instruction class to insert into btb
input logic [3:0] InstrClassM, // Instruction class to insert into btb
input logic [3:0] InstrClassW
);
@ -73,7 +73,7 @@ module btb #(parameter Depth = 10 ) (
// must output a valid PC and valid bit during reset. Because only PCF, not PCNextF is reset, PCNextF is invalid
// during reset. The BTB must produce a non X PC1NextF to allow the simulation to run.
// While thie mux could be included in IFU it is not necessary for the IROM/I$/bus.
// While the mux could be included in IFU it is not necessary for the IROM/I$/bus.
// For now it is optimal to leave it here.
assign ResetPC = `RESET_VECTOR;
assign PCNextFIndex = reset ? ResetPC[Depth+1:2] : {PCNextF[Depth+1] ^ PCNextF[1], PCNextF[Depth:2]};

3
src/privileged/csrsr.sv
View file

@ -198,9 +198,12 @@ module csrsr (
STATUS_UBE <= #1 CSRWriteValM[6] & `U_SUPPORTED & `BIGENDIAN_SUPPORTED;
STATUS_MBE <= #1 nextMBE;
STATUS_SBE <= #1 nextSBE;
// coverage off
// MSTATUSH only exists in 32-bit configurations, will not be hit on rv64gc
end else if (WriteMSTATUSHM) begin
STATUS_MBE <= #1 CSRWriteValM[5] & `BIGENDIAN_SUPPORTED;
STATUS_SBE <= #1 CSRWriteValM[4] & `S_SUPPORTED & `BIGENDIAN_SUPPORTED;
// coverage on
end else if (WriteSSTATUSM) begin // write a subset of the STATUS bits
STATUS_MXR_INT <= #1 CSRWriteValM[19];
STATUS_SUM_INT <= #1 CSRWriteValM[18];

3
src/privileged/trap.sv
View file

@ -81,11 +81,14 @@ module trap (
///////////////////////////////////////////
assign BothInstrAccessFaultM = InstrAccessFaultM | HPTWInstrAccessFaultM;
// coverage off -item e 1 -fecexprrow 2
// excludes InstrMisalignedFaultM from coverage of this line, since misaligned instructions cannot occur in rv64gc.
assign ExceptionM = InstrMisalignedFaultM | BothInstrAccessFaultM | IllegalInstrFaultM |
LoadMisalignedFaultM | StoreAmoMisalignedFaultM |
InstrPageFaultM | LoadPageFaultM | StoreAmoPageFaultM |
BreakpointFaultM | EcallFaultM |
LoadAccessFaultM | StoreAmoAccessFaultM;
// coverage on
assign TrapM = ExceptionM | InterruptM;
assign RetM = mretM | sretM;

567
testbench/testbench.sv
View file

@ -52,29 +52,29 @@ module testbench;
string tests[];
logic [3:0] dummy;
logic [`AHBW-1:0] HRDATAEXT;
logic HREADYEXT, HRESPEXT;
logic [`AHBW-1:0] HRDATAEXT;
logic HREADYEXT, HRESPEXT;
logic [`PA_BITS-1:0] HADDR;
logic [`AHBW-1:0] HWDATA;
logic [`XLEN/8-1:0] HWSTRB;
logic HWRITE;
logic [2:0] HSIZE;
logic [2:0] HBURST;
logic [3:0] HPROT;
logic [1:0] HTRANS;
logic HMASTLOCK;
logic HCLK, HRESETn;
logic [`XLEN-1:0] PCW;
logic [`AHBW-1:0] HWDATA;
logic [`XLEN/8-1:0] HWSTRB;
logic HWRITE;
logic [2:0] HSIZE;
logic [2:0] HBURST;
logic [3:0] HPROT;
logic [1:0] HTRANS;
logic HMASTLOCK;
logic HCLK, HRESETn;
logic [`XLEN-1:0] PCW;
string ProgramAddrMapFile, ProgramLabelMapFile;
integer ProgramAddrLabelArray [string] = '{ "begin_signature" : 0, "tohost" : 0 };
string ProgramAddrMapFile, ProgramLabelMapFile;
integer ProgramAddrLabelArray [string] = '{ "begin_signature" : 0, "tohost" : 0 };
logic DCacheFlushDone, DCacheFlushStart;
logic DCacheFlushDone, DCacheFlushStart;
logic riscofTest;
logic StartSample, EndSample;
flopenr #(`XLEN) PCWReg(clk, reset, ~dut.core.ieu.dp.StallW, dut.core.ifu.PCM, PCW);
flopenr #(32) InstrWReg(clk, reset, ~dut.core.ieu.dp.StallW, dut.core.ifu.InstrM, InstrW);
flopenr #(32) InstrWReg(clk, reset, ~dut.core.ieu.dp.StallW, dut.core.ifu.InstrM, InstrW);
// check assertions for a legal configuration
riscvassertions riscvassertions();
@ -85,62 +85,62 @@ module testbench;
//tests = '{};
if (`XLEN == 64) begin // RV64
case (TEST)
"arch64i": tests = arch64i;
"arch64priv": tests = arch64priv;
"arch64i": tests = arch64i;
"arch64priv": tests = arch64priv;
"arch64c": if (`C_SUPPORTED)
if (`ZICSR_SUPPORTED) tests = {arch64c, arch64cpriv};
else tests = {arch64c};
"arch64m": if (`M_SUPPORTED) tests = arch64m;
"arch64f": if (`F_SUPPORTED) tests = arch64f;
"arch64d": if (`D_SUPPORTED) tests = arch64d;
if (`ZICSR_SUPPORTED) tests = {arch64c, arch64cpriv};
else tests = {arch64c};
"arch64m": if (`M_SUPPORTED) tests = arch64m;
"arch64f": if (`F_SUPPORTED) tests = arch64f;
"arch64d": if (`D_SUPPORTED) tests = arch64d;
"arch64zi": if (`ZIFENCEI_SUPPORTED) tests = arch64zi;
"imperas64i": tests = imperas64i;
"imperas64f": if (`F_SUPPORTED) tests = imperas64f;
"imperas64d": if (`D_SUPPORTED) tests = imperas64d;
"imperas64m": if (`M_SUPPORTED) tests = imperas64m;
"wally64a": if (`A_SUPPORTED) tests = wally64a;
"imperas64c": if (`C_SUPPORTED) tests = imperas64c;
else tests = imperas64iNOc;
"custom": tests = custom;
"wally64i": tests = wally64i;
"wally64priv": tests = wally64priv;
"wally64periph": tests = wally64periph;
"coremark": tests = coremark;
"fpga": tests = fpga;
"ahb" : tests = ahb;
"coverage64gc" : tests = coverage64gc;
"arch64zba": if (`ZBA_SUPPORTED) tests = arch64zba;
"arch64zbb": if (`ZBB_SUPPORTED) tests = arch64zbb;
"arch64zbc": if (`ZBC_SUPPORTED) tests = arch64zbc;
"arch64zbs": if (`ZBS_SUPPORTED) tests = arch64zbs;
"imperas64i": tests = imperas64i;
"imperas64f": if (`F_SUPPORTED) tests = imperas64f;
"imperas64d": if (`D_SUPPORTED) tests = imperas64d;
"imperas64m": if (`M_SUPPORTED) tests = imperas64m;
"wally64a": if (`A_SUPPORTED) tests = wally64a;
"imperas64c": if (`C_SUPPORTED) tests = imperas64c;
else tests = imperas64iNOc;
"custom": tests = custom;
"wally64i": tests = wally64i;
"wally64priv": tests = wally64priv;
"wally64periph": tests = wally64periph;
"coremark": tests = coremark;
"fpga": tests = fpga;
"ahb" : tests = ahb;
"coverage64gc" : tests = coverage64gc;
"arch64zba": if (`ZBA_SUPPORTED) tests = arch64zba;
"arch64zbb": if (`ZBB_SUPPORTED) tests = arch64zbb;
"arch64zbc": if (`ZBC_SUPPORTED) tests = arch64zbc;
"arch64zbs": if (`ZBS_SUPPORTED) tests = arch64zbs;
endcase
end else begin // RV32
case (TEST)
"arch32i": tests = arch32i;
"arch32priv": tests = arch32priv;
"arch32i": tests = arch32i;
"arch32priv": tests = arch32priv;
"arch32c": if (`C_SUPPORTED)
if (`ZICSR_SUPPORTED) tests = {arch32c, arch32cpriv};
else tests = {arch32c};
"arch32m": if (`M_SUPPORTED) tests = arch32m;
"arch32f": if (`F_SUPPORTED) tests = arch32f;
"arch32d": if (`D_SUPPORTED) tests = arch32d;
if (`ZICSR_SUPPORTED) tests = {arch32c, arch32cpriv};
else tests = {arch32c};
"arch32m": if (`M_SUPPORTED) tests = arch32m;
"arch32f": if (`F_SUPPORTED) tests = arch32f;
"arch32d": if (`D_SUPPORTED) tests = arch32d;
"arch32zi": if (`ZIFENCEI_SUPPORTED) tests = arch32zi;
"imperas32i": tests = imperas32i;
"imperas32f": if (`F_SUPPORTED) tests = imperas32f;
"imperas32m": if (`M_SUPPORTED) tests = imperas32m;
"wally32a": if (`A_SUPPORTED) tests = wally32a;
"imperas32c": if (`C_SUPPORTED) tests = imperas32c;
else tests = imperas32iNOc;
"wally32i": tests = wally32i;
"wally32e": tests = wally32e;
"wally32priv": tests = wally32priv;
"wally32periph": tests = wally32periph;
"embench": tests = embench;
"coremark": tests = coremark;
"arch32zba": if (`ZBA_SUPPORTED) tests = arch32zba;
"arch32zbb": if (`ZBB_SUPPORTED) tests = arch32zbb;
"arch32zbc": if (`ZBC_SUPPORTED) tests = arch32zbc;
"arch32zbs": if (`ZBS_SUPPORTED) tests = arch32zbs;
"imperas32i": tests = imperas32i;
"imperas32f": if (`F_SUPPORTED) tests = imperas32f;
"imperas32m": if (`M_SUPPORTED) tests = imperas32m;
"wally32a": if (`A_SUPPORTED) tests = wally32a;
"imperas32c": if (`C_SUPPORTED) tests = imperas32c;
else tests = imperas32iNOc;
"wally32i": tests = wally32i;
"wally32e": tests = wally32e;
"wally32priv": tests = wally32priv;
"wally32periph": tests = wally32periph;
"embench": tests = embench;
"coremark": tests = coremark;
"arch32zba": if (`ZBA_SUPPORTED) tests = arch32zba;
"arch32zbb": if (`ZBB_SUPPORTED) tests = arch32zbb;
"arch32zbc": if (`ZBC_SUPPORTED) tests = arch32zbc;
"arch32zbs": if (`ZBS_SUPPORTED) tests = arch32zbs;
endcase
end
if (tests.size() == 0) begin
@ -149,7 +149,7 @@ module testbench;
end
end
string signame, memfilename, pathname, objdumpfilename, adrstr, outputfile;
string signame, memfilename, pathname, objdumpfilename, adrstr, outputfile;
integer outputFilePointer;
logic [31:0] GPIOIN, GPIOOUT, GPIOEN;
@ -160,16 +160,16 @@ module testbench;
logic SDCCmdOut;
logic SDCCmdOE;
logic [3:0] SDCDatIn;
tri1 [3:0] SDCDat;
tri1 [3:0] SDCDat;
tri1 SDCCmd;
logic HREADY;
logic HSELEXT;
logic InitializingMemories;
integer ResetCount, ResetThreshold;
logic InReset;
logic Begin;
logic InitializingMemories;
integer ResetCount, ResetThreshold;
logic InReset;
logic BeginSample;
// instantiate device to be tested
assign GPIOIN = 0;
@ -225,13 +225,14 @@ module testbench;
totalerrors = 0;
testadr = 0;
testadrNoBase = 0;
// riscof tests have a different signature, tests[0] == "1" refers to RiscvArchTests and tests[0] == "2" refers to WallyRiscvArchTests
// riscof tests have a different signature, tests[0] == "1" refers to RiscvArchTests
// and tests[0] == "2" refers to WallyRiscvArchTests
riscofTest = tests[0] == "1" | tests[0] == "2";
// fill memory with defined values to reduce Xs in simulation
// Quick note the memory will need to be initialized. The C library does not
// guarantee the initialized reads. For example a strcmp can read 6 byte
// strings, but uses a load double to read them in. If the last 2 bytes are
// not initialized the compare results in an 'x' which propagates through
// guarantee the initialized reads. For example a strcmp can read 6 byte
// strings, but uses a load double to read them in. If the last 2 bytes are
// not initialized the compare results in an 'x' which propagates through
// the design.
if (TEST == "coremark")
for (i=MemStartAddr; i<MemEndAddr; i = i+1)
@ -243,7 +244,7 @@ module testbench;
pathname = tvpaths[0];
else pathname = tvpaths[1]; */
if (riscofTest) memfilename = {pathname, tests[test], "/ref/ref.elf.memfile"};
else memfilename = {pathname, tests[test], ".elf.memfile"};
else memfilename = {pathname, tests[test], ".elf.memfile"};
if (`FPGA) begin
string romfilename, sdcfilename;
romfilename = {"../tests/custom/fpga-test-sdc/bin/fpga-test-sdc.memfile"};
@ -253,9 +254,9 @@ module testbench;
// force sdc timers
force dut.uncore.uncore.sdc.SDC.LimitTimers = 1;
end else begin
if (`IROM_SUPPORTED) $readmemh(memfilename, dut.core.ifu.irom.irom.rom.ROM);
if (`IROM_SUPPORTED) $readmemh(memfilename, dut.core.ifu.irom.irom.rom.ROM);
else if (`BUS_SUPPORTED) $readmemh(memfilename, dut.uncore.uncore.ram.ram.memory.RAM);
if (`DTIM_SUPPORTED) $readmemh(memfilename, dut.core.lsu.dtim.dtim.ram.RAM);
if (`DTIM_SUPPORTED) $readmemh(memfilename, dut.core.lsu.dtim.dtim.ram.RAM);
end
if (riscofTest) begin
@ -265,8 +266,9 @@ module testbench;
ProgramAddrMapFile = {pathname, tests[test], ".elf.objdump.addr"};
ProgramLabelMapFile = {pathname, tests[test], ".elf.objdump.lab"};
end
// declare memory labels that interest us, the updateProgramAddrLabelArray task will find the addr of each label and fill the array
// to expand, add more elements to this array and initialize them to zero (also initilaize them to zero at the start of the next test)
// declare memory labels that interest us, the updateProgramAddrLabelArray task will find
// the addr of each label and fill the array. To expand, add more elements to this array
// and initialize them to zero (also initilaize them to zero at the start of the next test)
if(!`FPGA) begin
updateProgramAddrLabelArray(ProgramAddrMapFile, ProgramLabelMapFile, ProgramAddrLabelArray);
$display("Read memfile %s", memfilename);
@ -294,99 +296,99 @@ module testbench;
ResetCount = 0;
end
end else begin
if (TEST == "coremark")
if (TEST == "coremark")
if (dut.core.priv.priv.EcallFaultM) begin
$display("Benchmark: coremark is done.");
$stop;
$display("Benchmark: coremark is done.");
$stop;
end
// Termination condition (i.e. we finished running current test)
if (DCacheFlushDone) begin
// Termination condition (i.e. we finished running current test)
if (DCacheFlushDone) begin
integer begin_signature_addr;
InReset = 1;
begin_signature_addr = ProgramAddrLabelArray["begin_signature"];
if (!begin_signature_addr)
$display("begin_signature addr not found in %s", ProgramLabelMapFile);
$display("begin_signature addr not found in %s", ProgramLabelMapFile);
testadr = ($unsigned(begin_signature_addr))/(`XLEN/8);
testadrNoBase = (begin_signature_addr - `UNCORE_RAM_BASE)/(`XLEN/8);
#600; // give time for instructions in pipeline to finish
if (TEST == "embench") begin
// Writes contents of begin_signature to .sim.output file
// this contains instret and cycles for start and end of test run, used by embench python speed script to calculate embench speed score
// also begin_signature contains the results of the self checking mechanism, which will be read by the python script for error checking
// this contains instret and cycles for start and end of test run, used by embench
// python speed script to calculate embench speed score.
// also, begin_signature contains the results of the self checking mechanism,
// which will be read by the python script for error checking
$display("Embench Benchmark: %s is done.", tests[test]);
if (riscofTest) outputfile = {pathname, tests[test], "/ref/ref.sim.output"};
else outputfile = {pathname, tests[test], ".sim.output"};
outputFilePointer = $fopen(outputfile);
i = 0;
while ($unsigned(i) < $unsigned(5'd5)) begin
$fdisplayh(outputFilePointer, DCacheFlushFSM.ShadowRAM[testadr+i]);
i = i + 1;
$fdisplayh(outputFilePointer, DCacheFlushFSM.ShadowRAM[testadr+i]);
i = i + 1;
end
$fclose(outputFilePointer);
$display("Embench Benchmark: created output file: %s", outputfile);
end else if (TEST == "coverage64gc") begin
$display("Coverage tests don't get checked");
end else begin
// for tests with no self checking mechanism, read .signature.output file and compare to check for errors
// clear signature to prevent contamination from previous tests
for(i=0; i<SIGNATURESIZE; i=i+1) begin
// for tests with no self checking mechanism, read .signature.output file and compare to check for errors
// clear signature to prevent contamination from previous tests
for(i=0; i<SIGNATURESIZE; i=i+1) begin
sig32[i] = 'bx;
end
if (riscofTest) signame = {pathname, tests[test], "/ref/Reference-sail_c_simulator.signature"};
else signame = {pathname, tests[test], ".signature.output"};
// read signature, reformat in 64 bits if necessary
$readmemh(signame, sig32);
i = 0;
while (i < SIGNATURESIZE) begin
end
if (riscofTest) signame = {pathname, tests[test], "/ref/Reference-sail_c_simulator.signature"};
else signame = {pathname, tests[test], ".signature.output"};
// read signature, reformat in 64 bits if necessary
$readmemh(signame, sig32);
i = 0;
while (i < SIGNATURESIZE) begin
if (`XLEN == 32) begin
signature[i] = sig32[i];
i = i+1;
signature[i] = sig32[i];
i = i+1;
end else begin
signature[i/2] = {sig32[i+1], sig32[i]};
i = i + 2;
signature[i/2] = {sig32[i+1], sig32[i]};
i = i + 2;
end
if (i >= 4 & sig32[i-4] === 'bx) begin
if (i == 4) begin
if (i == 4) begin
i = SIGNATURESIZE+1; // flag empty file
$display(" Error: empty test file");
end else i = SIGNATURESIZE; // skip over the rest of the x's for efficiency
end else i = SIGNATURESIZE; // skip over the rest of the x's for efficiency
end
end
end
// Check errors
errors = (i == SIGNATURESIZE+1); // error if file is empty
i = 0;
/* verilator lint_off INFINITELOOP */
while (signature[i] !== 'bx) begin
// Check errors
errors = (i == SIGNATURESIZE+1); // error if file is empty
i = 0;
/* verilator lint_off INFINITELOOP */
while (signature[i] !== 'bx) begin
logic [`XLEN-1:0] sig;
if (`DTIM_SUPPORTED) sig = dut.core.lsu.dtim.dtim.ram.RAM[testadrNoBase+i];
else if (`UNCORE_RAM_SUPPORTED) sig = dut.uncore.uncore.ram.ram.memory.RAM[testadrNoBase+i];
//$display("signature[%h] = %h sig = %h", i, signature[i], sig);
if (signature[i] !== sig & (signature[i] !== DCacheFlushFSM.ShadowRAM[testadr+i])) begin
errors = errors+1;
$display(" Error on test %s result %d: adr = %h sim (D$) %h sim (DTIM_SUPPORTED) = %h, signature = %h",
tests[test], i, (testadr+i)*(`XLEN/8), DCacheFlushFSM.ShadowRAM[testadr+i], sig, signature[i]);
$stop;//***debug
errors = errors+1;
$display(" Error on test %s result %d: adr = %h sim (D$) %h sim (DTIM_SUPPORTED) = %h, signature = %h",
tests[test], i, (testadr+i)*(`XLEN/8), DCacheFlushFSM.ShadowRAM[testadr+i], sig, signature[i]);
$stop; //***debug
end
i = i + 1;
end
/* verilator lint_on INFINITELOOP */
if (errors == 0) begin
end
/* verilator lint_on INFINITELOOP */
if (errors == 0) begin
$display("%s succeeded. Brilliant!!!", tests[test]);
end
else begin
end else begin
$display("%s failed with %d errors. :(", tests[test], errors);
totalerrors = totalerrors+1;
end
end
end
// move onto the next test, check to see if we're done
test = test + 1;
if (test == tests.size()) begin
if (totalerrors == 0) $display("SUCCESS! All tests ran without failures.");
else $display("FAIL: %d test programs had errors", totalerrors);
$stop;
end
else begin
if (totalerrors == 0) $display("SUCCESS! All tests ran without failures.");
else $display("FAIL: %d test programs had errors", totalerrors);
$stop;
end else begin
InitializingMemories = 1;
// If there are still additional tests to run, read in information for the next test
//pathname = tvpaths[tests[0]];
@ -394,7 +396,7 @@ module testbench;
else memfilename = {pathname, tests[test], ".elf.memfile"};
//$readmemh(memfilename, dut.uncore.uncore.ram.ram.memory.RAM);
if (`IROM_SUPPORTED) $readmemh(memfilename, dut.core.ifu.irom.irom.rom.ROM);
else if (`UNCORE_RAM_SUPPORTED) $readmemh(memfilename, dut.uncore.uncore.ram.ram.memory.RAM);
else if (`UNCORE_RAM_SUPPORTED) $readmemh(memfilename, dut.uncore.uncore.ram.ram.memory.RAM);
if (`DTIM_SUPPORTED) $readmemh(memfilename, dut.core.lsu.dtim.dtim.ram.RAM);
if (riscofTest) begin
@ -405,22 +407,22 @@ module testbench;
ProgramLabelMapFile = {pathname, tests[test], ".elf.objdump.lab"};
end
ProgramAddrLabelArray = '{ "begin_signature" : 0, "tohost" : 0 };
if(!`FPGA) begin
if(!`FPGA) begin
updateProgramAddrLabelArray(ProgramAddrMapFile, ProgramLabelMapFile, ProgramAddrLabelArray);
$display("Read memfile %s", memfilename);
end
end
end
end // if (DCacheFlushDone)
end // if (DCacheFlushDone)
end
end // always @ (negedge clk)
if(`PrintHPMCounters & `ZICOUNTERS_SUPPORTED) begin : HPMCSample
integer HPMCindex;
logic StartSampleFirst;
logic StartSampleDelayed, BeginDelayed;
logic EndSampleFirst, EndSampleDelayed;
logic [`XLEN-1:0] InitialHPMCOUNTERH[`COUNTERS-1:0];
integer HPMCindex;
logic StartSampleFirst;
logic StartSampleDelayed, BeginDelayed;
logic EndSampleFirst, EndSampleDelayed;
logic [`XLEN-1:0] InitialHPMCOUNTERH[`COUNTERS-1:0];
string HPMCnames[] = '{"Mcycle",
"------",
@ -433,8 +435,8 @@ module testbench;
"BP Target Wrong",
"RAS Wrong",
"Instr Class Wrong",
"Load Stall",
"Store Stall",
"Load Stall",
"Store Stall",
"D Cache Access",
"D Cache Miss",
"D Cache Cycles",
@ -447,56 +449,55 @@ module testbench;
"Interrupt",
"Exception",
"Divide Cycles"
};
};
if(TEST == "embench") begin
// embench runs warmup then runs start_trigger
// embench end with stop_trigger.
assign StartSampleFirst = FunctionName.FunctionName.FunctionName == "start_trigger";
flopr #(1) StartSampleReg(clk, reset, StartSampleFirst, StartSampleDelayed);
assign StartSample = StartSampleFirst & ~ StartSampleDelayed;
if(TEST == "embench") begin
// embench runs warmup then runs start_trigger
// embench end with stop_trigger.
assign StartSampleFirst = FunctionName.FunctionName.FunctionName == "start_trigger";
flopr #(1) StartSampleReg(clk, reset, StartSampleFirst, StartSampleDelayed);
assign StartSample = StartSampleFirst & ~ StartSampleDelayed;
assign EndSampleFirst = FunctionName.FunctionName.FunctionName == "stop_trigger";
flopr #(1) EndSampleReg(clk, reset, EndSampleFirst, EndSampleDelayed);
assign EndSample = EndSampleFirst & ~ EndSampleDelayed;
assign EndSampleFirst = FunctionName.FunctionName.FunctionName == "stop_trigger";
flopr #(1) EndSampleReg(clk, reset, EndSampleFirst, EndSampleDelayed);
assign EndSample = EndSampleFirst & ~ EndSampleDelayed;
end else if(TEST == "coremark") begin
// embench runs warmup then runs start_trigger
// embench end with stop_trigger.
assign StartSampleFirst = FunctionName.FunctionName.FunctionName == "start_time";
flopr #(1) StartSampleReg(clk, reset, StartSampleFirst, StartSampleDelayed);
assign StartSample = StartSampleFirst & ~ StartSampleDelayed;
end else if(TEST == "coremark") begin
// embench runs warmup then runs start_trigger
// embench end with stop_trigger.
assign StartSampleFirst = FunctionName.FunctionName.FunctionName == "start_time";
flopr #(1) StartSampleReg(clk, reset, StartSampleFirst, StartSampleDelayed);
assign StartSample = StartSampleFirst & ~ StartSampleDelayed;
assign EndSampleFirst = FunctionName.FunctionName.FunctionName == "stop_time";
flopr #(1) EndSampleReg(clk, reset, EndSampleFirst, EndSampleDelayed);
assign EndSample = EndSampleFirst & ~ EndSampleDelayed;
assign EndSampleFirst = FunctionName.FunctionName.FunctionName == "stop_time";
flopr #(1) EndSampleReg(clk, reset, EndSampleFirst, EndSampleDelayed);
assign EndSample = EndSampleFirst & ~ EndSampleDelayed;
end else begin
// default start condiction is reset
// default end condiction is end of test (DCacheFlushDone)
assign StartSampleFirst = InReset;
flopr #(1) StartSampleReg(clk, reset, StartSampleFirst, StartSampleDelayed);
assign StartSample = StartSampleFirst & ~ StartSampleDelayed;
assign EndSample = DCacheFlushStart & ~DCacheFlushDone;
end else begin
// default start condiction is reset
// default end condiction is end of test (DCacheFlushDone)
assign StartSampleFirst = InReset;
flopr #(1) StartSampleReg(clk, reset, StartSampleFirst, StartSampleDelayed);
assign StartSample = StartSampleFirst & ~ StartSampleDelayed;
assign EndSample = DCacheFlushStart & ~DCacheFlushDone;
flop #(1) BeginReg(clk, StartSampleFirst, BeginDelayed);
assign Begin = StartSampleFirst & ~BeginDelayed;
flop #(1) BeginReg(clk, StartSampleFirst, BeginDelayed);
assign BeginSample = StartSampleFirst & ~BeginDelayed;
end
end
always @(negedge clk) begin
if(StartSample) begin
for(HPMCindex = 0; HPMCindex < 32; HPMCindex += 1) begin
InitialHPMCOUNTERH[HPMCindex] <= dut.core.priv.priv.csr.counters.counters.HPMCOUNTER_REGW[HPMCindex];
end
end
if(StartSample) begin
for(HPMCindex = 0; HPMCindex < 32; HPMCindex += 1) begin
InitialHPMCOUNTERH[HPMCindex] <= dut.core.priv.priv.csr.counters.counters.HPMCOUNTER_REGW[HPMCindex];
end
end
if(EndSample) begin
for(HPMCindex = 0; HPMCindex < HPMCnames.size(); HPMCindex += 1) begin
// unlikely to have more than 10M in any counter.
$display("Cnt[%2d] = %7d %s", HPMCindex, dut.core.priv.priv.csr.counters.counters.HPMCOUNTER_REGW[HPMCindex] - InitialHPMCOUNTERH[HPMCindex], HPMCnames[HPMCindex]);
end
end
end
end
end
end
end
@ -535,58 +536,59 @@ module testbench;
if (`BPRED_SUPPORTED) begin
integer adrindex;
always @(*) begin
if(reset) begin
for(adrindex = 0; adrindex < 2**`BTB_SIZE; adrindex++) begin
force dut.core.ifu.bpred.bpred.TargetPredictor.memory.mem[adrindex] = 0;
end
for(adrindex = 0; adrindex < 2**`BPRED_SIZE; adrindex++) begin
force dut.core.ifu.bpred.bpred.Predictor.DirPredictor.PHT.mem[adrindex] = 0;
end
#1;
for(adrindex = 0; adrindex < 2**`BTB_SIZE; adrindex++) begin
release dut.core.ifu.bpred.bpred.TargetPredictor.memory.mem[adrindex];
end
for(adrindex = 0; adrindex < 2**`BPRED_SIZE; adrindex++) begin
release dut.core.ifu.bpred.bpred.Predictor.DirPredictor.PHT.mem[adrindex];
end
end
end
end
always @(*) begin
if(reset) begin
for(adrindex = 0; adrindex < 2**`BTB_SIZE; adrindex++) begin
force dut.core.ifu.bpred.bpred.TargetPredictor.memory.mem[adrindex] = 0;
end
for(adrindex = 0; adrindex < 2**`BPRED_SIZE; adrindex++) begin
force dut.core.ifu.bpred.bpred.Predictor.DirPredictor.PHT.mem[adrindex] = 0;
end
#1;
for(adrindex = 0; adrindex < 2**`BTB_SIZE; adrindex++) begin
release dut.core.ifu.bpred.bpred.TargetPredictor.memory.mem[adrindex];
end
for(adrindex = 0; adrindex < 2**`BPRED_SIZE; adrindex++) begin
release dut.core.ifu.bpred.bpred.Predictor.DirPredictor.PHT.mem[adrindex];
end
end
end
end
if (`ICACHE_SUPPORTED && `I_CACHE_ADDR_LOGGER) begin : ICacheLogger
int file;
string LogFile;
logic resetD, resetEdge;
logic Enable, InvalDelayed;
logic Enable;
logic InvalDelayed, InvalEdge;
assign Enable = dut.core.ifu.bus.icache.icache.cachefsm.LRUWriteEn &
dut.core.ifu.immu.immu.pmachecker.Cacheable &
~dut.core.ifu.bus.icache.icache.cachefsm.FlushStage &
~reset;
flop #(1) ResetDReg(clk, reset, resetD);
assign resetEdge = ~reset & resetD;
flop #(1) ResetDReg(clk, reset, resetD);
assign resetEdge = ~reset & resetD;
flop #(1) InvalReg(clk, dut.core.ifu.InvalidateICacheM, InvalDelayed);
assign InvalEdge = dut.core.ifu.InvalidateICacheM & ~InvalDelayed;
assign InvalEdge = dut.core.ifu.InvalidateICacheM & ~InvalDelayed;
initial begin
LogFile = $psprintf("ICache.log");
LogFile = $psprintf("ICache.log");
file = $fopen(LogFile, "w");
$fwrite(file, "BEGIN %s\n", memfilename);
end
$fwrite(file, "BEGIN %s\n", memfilename);
end
string AccessTypeString, HitMissString;
assign HitMissString = dut.core.ifu.bus.icache.icache.CacheHit ? "H" :
dut.core.ifu.bus.icache.icache.vict.cacheLRU.AllValid ? "E" : "M";
always @(posedge clk) begin
if(resetEdge) $fwrite(file, "TRAIN\n");
if(Begin) $fwrite(file, "BEGIN %s\n", memfilename);
if(Enable) begin // only log i cache reads
$fwrite(file, "%h R %s\n", dut.core.ifu.PCPF, HitMissString);
end
if(resetEdge) $fwrite(file, "TRAIN\n");
if(BeginSample) $fwrite(file, "BEGIN %s\n", memfilename);
if(Enable) begin // only log i cache reads
$fwrite(file, "%h R %s\n", dut.core.ifu.PCPF, HitMissString);
end
if(InvalEdge) $fwrite(file, "0 I X\n");
if(EndSample) $fwrite(file, "END %s\n", memfilename);
if(EndSample) $fwrite(file, "END %s\n", memfilename);
end
end
@ -615,18 +617,18 @@ end
(AccessTypeString != "NULL");
initial begin
LogFile = $psprintf("DCache.log");
LogFile = $psprintf("DCache.log");
file = $fopen(LogFile, "w");
$fwrite(file, "BEGIN %s\n", memfilename);
end
$fwrite(file, "BEGIN %s\n", memfilename);
end
always @(posedge clk) begin
if(resetEdge) $fwrite(file, "TRAIN\n");
if(Begin) $fwrite(file, "BEGIN %s\n", memfilename);
if(Enabled) begin
$fwrite(file, "%h %s %s\n", dut.core.lsu.PAdrM, AccessTypeString, HitMissString);
end
if(dut.core.lsu.bus.dcache.dcache.cachefsm.FlushFlag) $fwrite(file, "0 F X\n");
if(EndSample) $fwrite(file, "END %s\n", memfilename);
if(resetEdge) $fwrite(file, "TRAIN\n");
if(BeginSample) $fwrite(file, "BEGIN %s\n", memfilename);
if(Enabled) begin
$fwrite(file, "%h %s %s\n", dut.core.lsu.PAdrM, AccessTypeString, HitMissString);
end
if(dut.core.lsu.bus.dcache.dcache.cachefsm.FlushFlag) $fwrite(file, "0 F X\n");
if(EndSample) $fwrite(file, "END %s\n", memfilename);
end
end
@ -634,45 +636,45 @@ end
if (`BPRED_LOGGER) begin
string direction;
int file;
logic PCSrcM;
string LogFile;
logic resetD, resetEdge;
flopenrc #(1) PCSrcMReg(clk, reset, dut.core.FlushM, ~dut.core.StallM, dut.core.ifu.bpred.bpred.Predictor.DirPredictor.PCSrcE, PCSrcM);
flop #(1) ResetDReg(clk, reset, resetD);
assign resetEdge = ~reset & resetD;
logic PCSrcM;
string LogFile;
logic resetD, resetEdge;
flopenrc #(1) PCSrcMReg(clk, reset, dut.core.FlushM, ~dut.core.StallM, dut.core.ifu.bpred.bpred.Predictor.DirPredictor.PCSrcE, PCSrcM);
flop #(1) ResetDReg(clk, reset, resetD);
assign resetEdge = ~reset & resetD;
initial begin
LogFile = $psprintf("branch_%s%0d.log", `BPRED_TYPE, `BPRED_SIZE);
LogFile = $psprintf("branch_%s%0d.log", `BPRED_TYPE, `BPRED_SIZE);
file = $fopen(LogFile, "w");
end
end
always @(posedge clk) begin
if(resetEdge) $fwrite(file, "TRAIN\n");
if(StartSample) $fwrite(file, "BEGIN %s\n", memfilename);
if(dut.core.ifu.InstrClassM[0] & ~dut.core.StallW & ~dut.core.FlushW & dut.core.InstrValidM) begin
direction = PCSrcM ? "t" : "n";
$fwrite(file, "%h %s\n", dut.core.PCM, direction);
end
if(EndSample) $fwrite(file, "END %s\n", memfilename);
end
if(resetEdge) $fwrite(file, "TRAIN\n");
if(StartSample) $fwrite(file, "BEGIN %s\n", memfilename);
if(dut.core.ifu.InstrClassM[0] & ~dut.core.StallW & ~dut.core.FlushW & dut.core.InstrValidM) begin
direction = PCSrcM ? "t" : "n";
$fwrite(file, "%h %s\n", dut.core.PCM, direction);
end
if(EndSample) $fwrite(file, "END %s\n", memfilename);
end
end
end
// check for hange up.
// check for hang up.
logic [`XLEN-1:0] OldPCW;
integer WatchDogTimerCount;
localparam WatchDogTimerThreshold = 1000000;
logic WatchDogTimeOut;
integer WatchDogTimerCount;
localparam WatchDogTimerThreshold = 1000000;
logic WatchDogTimeOut;
always_ff @(posedge clk) begin
OldPCW <= PCW;
if(OldPCW == PCW) WatchDogTimerCount = WatchDogTimerCount + 1'b1;
else WatchDogTimerCount = '0;
OldPCW <= PCW;
if(OldPCW == PCW) WatchDogTimerCount = WatchDogTimerCount + 1'b1;
else WatchDogTimerCount = '0;
end
always_comb begin
WatchDogTimeOut = WatchDogTimerCount >= WatchDogTimerThreshold;
if(WatchDogTimeOut) begin
$display("FAILURE: Watch Dog Time Out triggered. PCW stuck at %x for more than %d cycles", PCW, WatchDogTimerCount);
$stop;
end
WatchDogTimeOut = WatchDogTimerCount >= WatchDogTimerThreshold;
if(WatchDogTimeOut) begin
$display("FAILURE: Watch Dog Time Out triggered. PCW stuck at %x for more than %d cycles", PCW, WatchDogTimerCount);
$stop;
end
end
endmodule
@ -690,34 +692,34 @@ module DCacheFlushFSM
logic [`XLEN-1:0] ShadowRAM[`UNCORE_RAM_BASE>>(1+`XLEN/32):(`UNCORE_RAM_RANGE+`UNCORE_RAM_BASE)>>1+(`XLEN/32)];
if(`DCACHE_SUPPORTED) begin
localparam numlines = testbench.dut.core.lsu.bus.dcache.dcache.NUMLINES;
localparam numways = testbench.dut.core.lsu.bus.dcache.dcache.NUMWAYS;
localparam linebytelen = testbench.dut.core.lsu.bus.dcache.dcache.LINEBYTELEN;
localparam linelen = testbench.dut.core.lsu.bus.dcache.dcache.LINELEN;
localparam sramlen = testbench.dut.core.lsu.bus.dcache.dcache.CacheWays[0].SRAMLEN;
localparam cachesramwords = testbench.dut.core.lsu.bus.dcache.dcache.CacheWays[0].NUMSRAM;
localparam numwords = sramlen/`XLEN;
localparam lognumlines = $clog2(numlines);
localparam loglinebytelen = $clog2(linebytelen);
localparam lognumways = $clog2(numways);
localparam tagstart = lognumlines + loglinebytelen;
if(`DCACHE_SUPPORTED) begin
localparam numlines = testbench.dut.core.lsu.bus.dcache.dcache.NUMLINES;
localparam numways = testbench.dut.core.lsu.bus.dcache.dcache.NUMWAYS;
localparam linebytelen = testbench.dut.core.lsu.bus.dcache.dcache.LINEBYTELEN;
localparam linelen = testbench.dut.core.lsu.bus.dcache.dcache.LINELEN;
localparam sramlen = testbench.dut.core.lsu.bus.dcache.dcache.CacheWays[0].SRAMLEN;
localparam cachesramwords = testbench.dut.core.lsu.bus.dcache.dcache.CacheWays[0].NUMSRAM;
localparam numwords = sramlen/`XLEN;
localparam lognumlines = $clog2(numlines);
localparam loglinebytelen = $clog2(linebytelen);
localparam lognumways = $clog2(numways);
localparam tagstart = lognumlines + loglinebytelen;
genvar index, way, cacheWord;
logic [sramlen-1:0] CacheData [numways-1:0] [numlines-1:0] [cachesramwords-1:0];
logic [sramlen-1:0] cacheline;
logic [`XLEN-1:0] CacheTag [numways-1:0] [numlines-1:0] [cachesramwords-1:0];
logic CacheValid [numways-1:0] [numlines-1:0] [cachesramwords-1:0];
logic CacheDirty [numways-1:0] [numlines-1:0] [cachesramwords-1:0];
logic [`PA_BITS-1:0] CacheAdr [numways-1:0] [numlines-1:0] [cachesramwords-1:0];
genvar index, way, cacheWord;
logic [sramlen-1:0] CacheData [numways-1:0] [numlines-1:0] [cachesramwords-1:0];
logic [sramlen-1:0] cacheline;
logic [`XLEN-1:0] CacheTag [numways-1:0] [numlines-1:0] [cachesramwords-1:0];
logic CacheValid [numways-1:0] [numlines-1:0] [cachesramwords-1:0];
logic CacheDirty [numways-1:0] [numlines-1:0] [cachesramwords-1:0];
logic [`PA_BITS-1:0] CacheAdr [numways-1:0] [numlines-1:0] [cachesramwords-1:0];
for(index = 0; index < numlines; index++) begin
for(way = 0; way < numways; way++) begin
for(cacheWord = 0; cacheWord < cachesramwords; cacheWord++) begin
copyShadow #(.tagstart(tagstart),
.loglinebytelen(loglinebytelen), .sramlen(sramlen))
copyShadow(.clk,
for(way = 0; way < numways; way++) begin
for(cacheWord = 0; cacheWord < cachesramwords; cacheWord++) begin
copyShadow #(.tagstart(tagstart),
.loglinebytelen(loglinebytelen), .sramlen(sramlen))
copyShadow(.clk,
.start,
.tag(testbench.dut.core.lsu.bus.dcache.dcache.CacheWays[way].CacheTagMem.RAM[index][`PA_BITS-1-tagstart:0]),
.valid(testbench.dut.core.lsu.bus.dcache.dcache.CacheWays[way].ValidBits[index]),
@ -766,18 +768,18 @@ endmodule
module copyShadow
#(parameter tagstart, loglinebytelen, sramlen)
(input logic clk,
input logic start,
input logic [`PA_BITS-1:tagstart] tag,
input logic valid, dirty,
input logic [sramlen-1:0] data,
input logic [32-1:0] index,
input logic [32-1:0] cacheWord,
output logic [sramlen-1:0] CacheData,
output logic [`PA_BITS-1:0] CacheAdr,
output logic [`XLEN-1:0] CacheTag,
output logic CacheValid,
output logic CacheDirty);
(input logic clk,
input logic start,
input logic [`PA_BITS-1:tagstart] tag,
input logic valid, dirty,
input logic [sramlen-1:0] data,
input logic [32-1:0] index,
input logic [32-1:0] cacheWord,
output logic [sramlen-1:0] CacheData,
output logic [`PA_BITS-1:0] CacheAdr,
output logic [`XLEN-1:0] CacheTag,
output logic CacheValid,
output logic CacheDirty);
always_ff @(posedge clk) begin
@ -806,8 +808,7 @@ task automatic updateProgramAddrLabelArray;
integer returncode;
returncode = $fscanf(ProgramLabelMapFP, "%s\n", label);
returncode = $fscanf(ProgramAddrMapFP, "%s\n", adrstr);
if (ProgramAddrLabelArray.exists(label))
ProgramAddrLabelArray[label] = adrstr.atohex();
if (ProgramAddrLabelArray.exists(label)) ProgramAddrLabelArray[label] = adrstr.atohex();
end
end
$fclose(ProgramLabelMapFP);

59
tests/coverage/priv.S
View file

@ -142,6 +142,65 @@ main:
# Test writes to floating point CSRs
csrw frm, t0
csrw fflags, t0
# CSRC MCOUNTEREN Register
# Go to machine mode
li a0, 3
ecall
# Activate HPM3
li t0, -1
csrw mcounteren, t0
csrw scounteren, t0
# Go to supervisor
li a0, 1
ecall
#try to write to HPMs
csrw 333, t0
#go to user mode
li a0, 0
ecall
csrr t0, hpmcounter22
# setting registers bits to 0
li a0, 3 # back to machine mode
ecall
li t0, 0
csrw mcounteren, t0
csrw scounteren, t0
# Write to satp when status.TVM is 1 from machine mode
bseti t0, zero, 20
csrs mstatus, t0
csrw satp, t0
# Test checking privilege for reading counters (using counter 22 as an example)
# Go to machine mode
li a0, 3
ecall
# Set SCOUNTEREN to all 0s, MCOUNTEREN to all 1s
li t0, 0
csrw scounteren, t0
li t1, -1
csrw mcounteren, t1
# Go to supervisor mode
li a0, 1
ecall
# try to read from HPM22
csrr t0, hpmcounter22
# go to user mode
li a0, 0
ecall
csrr t0, hpmcounter22
j done