riscv/rocket-chip
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generous hit detection on PutBlocks

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This commit is contained in:
Henry Cook 2015-03-18 18:49:32 -07:00
parent 19059bf0eb
commit fb8071c12d
1 changed files with 8 additions and 8 deletions
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16
uncore/src/main/scala/cache.scala
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@ -609,10 +609,10 @@ class L2AcquireTracker(trackerId: Int, bankId: Int) extends L2XactTracker {
val present_puts = Reg(init=Bits(0, width = innerDataBeats)) val present_puts = Reg(init=Bits(0, width = innerDataBeats))
present_puts := (present_puts | addPendingBitWhenHasData(io.inner.acquire)) present_puts := (present_puts | addPendingBitWhenHasData(io.inner.acquire))
val is_hit = xact_tag_match && val is_hit = (if(isLastLevelCache)
(xact_meta.coh.outer.isHit(xact.op_code()) || (xact.isBuiltInType(Acquire.putBlockType) ||
(Bool(isLastLevelCache) && // LLC has all the permissions xact_meta.coh.outer.isValid())
xact_meta.coh.outer.isValid())) else (xact_tag_match && xact_meta.coh.outer.isHit(xact.op_code())))
val do_allocate = xact.allocate() val do_allocate = xact.allocate()
val needs_writeback = !xact_tag_match && do_allocate && val needs_writeback = !xact_tag_match && do_allocate &&
(xact_meta.coh.outer.requiresVoluntaryWriteback() || (xact_meta.coh.outer.requiresVoluntaryWriteback() ||
@ -857,10 +857,10 @@ class L2AcquireTracker(trackerId: Int, bankId: Int) extends L2XactTracker {
pending_coh := io.meta.resp.bits.meta.coh pending_coh := io.meta.resp.bits.meta.coh
val _coh = io.meta.resp.bits.meta.coh val _coh = io.meta.resp.bits.meta.coh
val _tag_match = io.meta.resp.bits.tag_match val _tag_match = io.meta.resp.bits.tag_match
val _is_hit = _tag_match && val _is_hit = (if(isLastLevelCache)
(_coh.outer.isHit(xact.op_code()) || (xact.isBuiltInType(Acquire.putBlockType) ||
(Bool(isLastLevelCache) && // LLC has all the permissions _coh.outer.isValid())
_coh.outer.isValid())) else (_tag_match && _coh.outer.isHit(xact.op_code())))
val _needs_writeback = !_tag_match && do_allocate && val _needs_writeback = !_tag_match && do_allocate &&
(_coh.outer.requiresVoluntaryWriteback() || (_coh.outer.requiresVoluntaryWriteback() ||