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More cache simplifications.

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This commit is contained in:
Ross Thompson 2022-02-11 22:54:05 -06:00
parent ae2011eb07
commit 6fa9490d0b
1 changed files with 18 additions and 18 deletions
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36
pipelined/src/cache/cachefsm.sv vendored
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@ -83,23 +83,23 @@ module cachefsm
logic DoAnyMiss; logic DoAnyMiss;
logic FlushFlag, FlushWayAndNotAdrFlag; logic FlushFlag, FlushWayAndNotAdrFlag;
typedef enum logic [3:0] {STATE_READY, typedef enum logic [3:0] {STATE_READY, // hit states
// miss states
STATE_MISS_FETCH_WDV, STATE_MISS_FETCH_WDV,
STATE_MISS_FETCH_DONE, STATE_MISS_FETCH_DONE,
STATE_MISS_EVICT_DIRTY, STATE_MISS_EVICT_DIRTY,
STATE_MISS_WRITE_CACHE_LINE, STATE_MISS_WRITE_CACHE_LINE,
STATE_MISS_READ_WORD, STATE_MISS_READ_WORD,
STATE_MISS_READ_WORD_DELAY, STATE_MISS_READ_WORD_DELAY,
STATE_MISS_WRITE_WORD, STATE_MISS_WRITE_WORD,
// cpu stalled replay/restore state
STATE_CPU_BUSY, STATE_CPU_BUSY,
// flush cache
STATE_FLUSH, STATE_FLUSH,
STATE_FLUSH_CHECK, STATE_FLUSH_CHECK,
STATE_FLUSH_INCR, STATE_FLUSH_INCR,
STATE_FLUSH_WRITE_BACK, STATE_FLUSH_WRITE_BACK,
STATE_FLUSH_CLEAR_DIRTY} statetype; STATE_FLUSH_CLEAR_DIRTY} statetype;
(* mark_debug = "true" *) statetype CurrState, NextState; (* mark_debug = "true" *) statetype CurrState, NextState;
logic IgnoreRequest; logic IgnoreRequest;
@ -176,9 +176,9 @@ module cachefsm
assign CacheStall = (CurrState == STATE_READY & (DoFlush | DoAnyMiss)) | assign CacheStall = (CurrState == STATE_READY & (DoFlush | DoAnyMiss)) |
(CurrState == STATE_MISS_FETCH_WDV) | (CurrState == STATE_MISS_FETCH_WDV) |
(CurrState == STATE_MISS_FETCH_DONE) | (CurrState == STATE_MISS_FETCH_DONE) |
(CurrState == STATE_MISS_EVICT_DIRTY) |
(CurrState == STATE_MISS_WRITE_CACHE_LINE) | (CurrState == STATE_MISS_WRITE_CACHE_LINE) |
(CurrState == STATE_MISS_READ_WORD) | (CurrState == STATE_MISS_READ_WORD) |
(CurrState == STATE_MISS_EVICT_DIRTY) |
(CurrState == STATE_FLUSH) | (CurrState == STATE_FLUSH) |
(CurrState == STATE_FLUSH_CHECK & ~(FlushFlag)) | (CurrState == STATE_FLUSH_CHECK & ~(FlushFlag)) |
(CurrState == STATE_FLUSH_INCR) | (CurrState == STATE_FLUSH_INCR) |