riscv/rocket-chip
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refactor cache params

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This commit is contained in:
Henry Cook 2014-12-17 14:28:14 -08:00
parent ab39cbb15d
commit bfcfc3fe18
1 changed files with 16 additions and 13 deletions
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29
uncore/src/main/scala/cache.scala
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@ -30,8 +30,6 @@ abstract trait CacheParameters extends UsesParameters {
val rowWords = rowBits/wordBits
val rowBytes = rowBits/8
val rowOffBits = log2Up(rowBytes)
val refillCyclesPerBeat = params(TLDataBits)/rowBits
val refillCycles = refillCyclesPerBeat*params(TLDataBeats)
}
abstract class CacheBundle extends Bundle with CacheParameters
@ -99,7 +97,12 @@ class MetadataArray[T <: Metadata](makeRstVal: () => T) extends CacheModule {
}
abstract trait L2HellaCacheParameters extends CacheParameters
with CoherenceAgentParameters
with CoherenceAgentParameters {
val idxMSB = idxBits-1
val idxLSB = 0
val refillCyclesPerBeat = params(TLDataBits)/rowBits
val refillCycles = refillCyclesPerBeat*params(TLDataBeats)
}
abstract class L2HellaCacheBundle extends Bundle with L2HellaCacheParameters
abstract class L2HellaCacheModule extends Module with L2HellaCacheParameters
@ -415,13 +418,13 @@ class L2VoluntaryReleaseTracker(trackerId: Int, bankId: Int, innerId: String, ou
io.data.write.bits.data := xact_data(local_data_cnt)
io.meta.read.valid := Bool(false)
io.meta.read.bits.id := UInt(trackerId)
io.meta.read.bits.idx := xact_addr(untagBits-1,blockOffBits)
io.meta.read.bits.tag := xact_addr >> UInt(untagBits)
io.meta.read.bits.idx := xact_addr(idxMSB,idxLSB)
io.meta.read.bits.tag := xact_addr >> UInt(idxBits)
io.meta.write.valid := Bool(false)
io.meta.write.bits.id := UInt(trackerId)
io.meta.write.bits.idx := xact_addr(untagBits-1,blockOffBits)
io.meta.write.bits.idx := xact_addr(idxMSB,idxLSB)
io.meta.write.bits.way_en := xact_way_en
io.meta.write.bits.data.tag := xact_addr >> UInt(untagBits)
io.meta.write.bits.data.tag := xact_addr >> UInt(idxBits)
io.meta.write.bits.data.coh := co.masterMetadataOnRelease(xact,
xact_meta.coh,
xact_src)
@ -505,7 +508,7 @@ class L2AcquireTracker(trackerId: Int, bankId: Int, innerId: String, outerId: St
val crel_wb_src = Reg(init = UInt(0, width = log2Up(nClients)))
val crel_wb_g_type = Reg(init = UInt(0, width = co.grantTypeWidth))
val wb_buffer = Vec.fill(tlDataBeats){ Reg(io.inner.acquire.bits.payload.data.clone) }
val wb_addr = Cat(xact_meta.tag, xact_addr(untagBits-1,blockOffBits))
val wb_addr = Cat(xact_meta.tag, xact_addr(idxMSB,idxLSB))
val collect_cacq_data = Reg(init=Bool(false))
//TODO: zero width wires
@ -535,7 +538,7 @@ class L2AcquireTracker(trackerId: Int, bankId: Int, innerId: String, outerId: St
//TODO: Are there any races between lines with the same idx?
//TODO: Allow hit under miss for stores
io.has_acquire_conflict := co.isCoherenceConflict(xact.addr, c_acq.payload.addr) &&
xact.addr(untagBits-1,0) === c_acq.payload.addr(untagBits-1,0) &&
xact.addr(idxMSB,idxLSB) === c_acq.payload.addr(idxMSB,idxLSB) &&
(state != s_idle) &&
!collect_cacq_data
io.has_release_conflict := (co.isCoherenceConflict(xact.addr, c_rel.payload.addr) ||
@ -598,13 +601,13 @@ class L2AcquireTracker(trackerId: Int, bankId: Int, innerId: String, outerId: St
io.data.write.bits.data := xact_data(local_data_write_cnt)
io.meta.read.valid := Bool(false)
io.meta.read.bits.id := UInt(trackerId)
io.meta.read.bits.idx := xact_addr(untagBits-1,blockOffBits)
io.meta.read.bits.tag := xact_addr >> UInt(untagBits)
io.meta.read.bits.idx := xact_addr(idxMSB,idxLSB)
io.meta.read.bits.tag := xact_addr >> UInt(idxBits)
io.meta.write.valid := Bool(false)
io.meta.write.bits.id := UInt(trackerId)
io.meta.write.bits.idx := xact_addr(untagBits-1,blockOffBits)
io.meta.write.bits.idx := xact_addr(idxMSB,idxLSB)
io.meta.write.bits.way_en := xact_way_en
io.meta.write.bits.data.tag := xact_addr >> UInt(untagBits)
io.meta.write.bits.data.tag := xact_addr >> UInt(idxBits)
io.meta.write.bits.data.coh := next_coh_on_grant
when(collect_cacq_data) {