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ifu cachefsm coverage

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This commit is contained in:
David Harris 2024-02-08 13:15:06 -08:00
parent ea14162c40
commit 6f53adad80
2 changed files with 3 additions and 1 deletions
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2
sim/coverage-exclusions-rv64gc.do
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@ -61,6 +61,8 @@ coverage exclude -scope /dut/core/ifu/bus/icache/icache/cachefsm -fstate CurrSta
coverage exclude -scope /dut/core/ifu/bus/icache/icache/cachefsm -ftrans CurrState STATE_WRITE_LINE->STATE_READY STATE_FETCH->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
# I$ does not flush
coverage exclude -scope /dut/core/ifu/bus/icache/icache/cachefsm -linerange [GetLineNum ../src/cache/cachefsm.sv "exclusion-tag: icache FlushCache"] -item e 1 -fecexprrow 2
# 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
coverage exclude -scope /dut/core/ifu/bus/icache/icache/cachefsm -linerange [GetLineNum ../src/cache/cachefsm.sv "exclusion-tag: icache FLUSHStatement"] -item bs 1

2
src/cache/cachefsm.sv vendored
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@ -144,7 +144,7 @@ module cachefsm import cvw::*; #(parameter cvw_t P,
// com back to CPU
assign CacheCommitted = (CurrState != STATE_READY) & ~(READ_ONLY_CACHE & (CurrState == STATE_READ_HOLD));
assign StallConditions = FlushCache | AnyMiss | CMOWriteback;
assign StallConditions = FlushCache | AnyMiss | CMOWriteback; // exclusion-tag: icache FlushCache
assign CacheStall = (CurrState == STATE_READY & StallConditions) | // exclusion-tag: icache StallStates
(CurrState == STATE_FETCH) |
(CurrState == STATE_WRITEBACK) |