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Reduced cache fsm complexity.

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This commit is contained in:
Rose Thompson 2023-11-27 13:13:36 -06:00
parent c3da4c3c31
commit 08549446ef
1 changed files with 1 additions and 2 deletions
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3
src/cache/cachefsm.sv vendored
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@ -130,8 +130,7 @@ module cachefsm import cvw::*; #(parameter cvw_t P,
STATE_READ_HOLD: if(Stall) NextState = STATE_READ_HOLD; STATE_READ_HOLD: if(Stall) NextState = STATE_READ_HOLD;
else NextState = STATE_READY; else NextState = STATE_READY;
// exclusion-tag-start: icache case // exclusion-tag-start: icache case
STATE_WRITEBACK: if (CacheBusAck & (CMOp[1] | CMOp[2])) NextState = STATE_READ_HOLD; STATE_WRITEBACK: if(CacheBusAck & ~CMOp[3]) NextState = STATE_FETCH;
else if(CacheBusAck & ~CMOp[3]) NextState = STATE_FETCH;
else if(CacheBusAck) NextState = STATE_READ_HOLD; else if(CacheBusAck) NextState = STATE_READ_HOLD;
else NextState = STATE_WRITEBACK; 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. // 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.