riscv/rocket-chip
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Make prefetch type available in a_type, issue probeInvalidates for putPrefetches

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This commit is contained in:
Henry Cook 2015-11-16 23:26:13 -08:00
parent d426ecee78
commit 2b977325e3
4 changed files with 33 additions and 20 deletions
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2
uncore/src/main/scala/broadcast.scala
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@ -219,7 +219,7 @@ class BroadcastAcquireTracker(trackerId: Int)
val coh = ManagerMetadata.onReset
assert(!(state != s_idle && xact.isBuiltInType() &&
Vec(Acquire.putAtomicType, Acquire.prefetchType).contains(xact.a_type)),
Vec(Acquire.putAtomicType, Acquire.getPrefetchType, Acquire.putPrefetchType).contains(xact.a_type)),
"Broadcast Hub does not support PutAtomics or prefetches") // TODO
val release_count = Reg(init=UInt(0, width = log2Up(io.inner.tlNCachingClients+1)))

9
uncore/src/main/scala/cache.scala
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@ -663,10 +663,11 @@ class L2AcquireTracker(trackerId: Int)(implicit p: Parameters) extends L2XactTra
val allowedTypes = List((Acquire.getType, Acquire.getType),
(Acquire.putType, Acquire.putType),
(Acquire.putBlockType, Acquire.putBlockType),
(Acquire.prefetchType, Acquire.prefetchType),
(Acquire.prefetchType, Acquire.getType),
(Acquire.prefetchType, Acquire.putType),
(Acquire.prefetchType, Acquire.putBlockType))
(Acquire.getPrefetchType, Acquire.getPrefetchType),
(Acquire.putPrefetchType, Acquire.putPrefetchType),
(Acquire.getPrefetchType, Acquire.getType),
(Acquire.putPrefetchType, Acquire.putType),
(Acquire.putPrefetchType, Acquire.putBlockType))
allowedTypes.map { case(a, b) => xact.isBuiltInType(a) && sec.isBuiltInType(b) }.reduce(_||_) &&
xact_op_code === sec.op_code() &&
sec.conflicts(xact_addr_block) &&

10
uncore/src/main/scala/coherence.scala
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@ -186,6 +186,8 @@ class MICoherence(dir: DirectoryRepresentation) extends CoherencePolicy(dir) {
Acquire.putBlockType -> probeInvalidate,
Acquire.getType -> probeCopy,
Acquire.putType -> probeInvalidate,
Acquire.getPrefetchType -> probeCopy,
Acquire.putPrefetchType -> probeInvalidate,
Acquire.putAtomicType -> probeInvalidate)),
probeInvalidate)
@ -286,6 +288,8 @@ class MEICoherence(dir: DirectoryRepresentation) extends CoherencePolicy(dir) {
Acquire.putBlockType -> probeInvalidate,
Acquire.getType -> probeCopy,
Acquire.putType -> probeInvalidate,
Acquire.getPrefetchType -> probeCopy,
Acquire.putPrefetchType -> probeInvalidate,
Acquire.putAtomicType -> probeInvalidate)),
probeInvalidate)
@ -397,6 +401,8 @@ class MSICoherence(dir: DirectoryRepresentation) extends CoherencePolicy(dir) {
Acquire.putBlockType -> probeInvalidate,
Acquire.getType -> probeCopy,
Acquire.putType -> probeInvalidate,
Acquire.getPrefetchType -> probeCopy,
Acquire.putPrefetchType -> probeInvalidate,
Acquire.putAtomicType -> probeInvalidate)),
MuxLookup(a.a_type, probeCopy, Array(
acquireShared -> probeDowngrade,
@ -515,6 +521,8 @@ class MESICoherence(dir: DirectoryRepresentation) extends CoherencePolicy(dir) {
Acquire.putBlockType -> probeInvalidate,
Acquire.getType -> probeCopy,
Acquire.putType -> probeInvalidate,
Acquire.getPrefetchType -> probeCopy,
Acquire.putPrefetchType -> probeInvalidate,
Acquire.putAtomicType -> probeInvalidate)),
MuxLookup(a.a_type, probeCopy, Array(
acquireShared -> probeDowngrade,
@ -654,6 +662,8 @@ class MigratoryCoherence(dir: DirectoryRepresentation) extends CoherencePolicy(d
Acquire.putBlockType -> probeInvalidate,
Acquire.getType -> probeCopy,
Acquire.putType -> probeInvalidate,
Acquire.getPrefetchType -> probeCopy,
Acquire.putPrefetchType -> probeInvalidate,
Acquire.putAtomicType -> probeInvalidate)),
MuxLookup(a.a_type, probeCopy, Array(
acquireShared -> probeDowngrade,

22
uncore/src/main/scala/tilelink.scala
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@ -194,7 +194,8 @@ trait HasAcquireType extends HasTileLinkParameters {
def isSubBlockType(dummy: Int = 0): Bool = isBuiltInType() && Acquire.typesOnSubBlocks.contains(a_type)
/** Is this message a built-in prefetch message */
def isPrefetch(dummy: Int = 0): Bool = isBuiltInType() && is(Acquire.prefetchType)
def isPrefetch(dummy: Int = 0): Bool = isBuiltInType() &&
(is(Acquire.getPrefetchType) || is(Acquire.putPrefetchType))
/** Does this message contain data? Assumes that no custom message types have data. */
def hasData(dummy: Int = 0): Bool = isBuiltInType() && Acquire.typesWithData.contains(a_type)
@ -319,7 +320,8 @@ object Acquire {
def putType = UInt("b010") // Put a single beat of data
def putBlockType = UInt("b011") // Put a whole block of data
def putAtomicType = UInt("b100") // Perform an atomic memory op
def prefetchType = UInt("b101") // Prefetch a whole block of data
def getPrefetchType = UInt("b101") // Prefetch a whole block of data
def putPrefetchType = UInt("b110") // Prefetch a whole block of data, with intent to write
def typesWithData = Vec(putType, putBlockType, putAtomicType)
def typesWithMultibeatData = Vec(putBlockType)
def typesOnSubBlocks = Vec(putType, getType, putAtomicType)
@ -332,7 +334,8 @@ object Acquire {
Acquire.putType -> Grant.putAckType,
Acquire.putBlockType -> Grant.putAckType,
Acquire.putAtomicType -> Grant.getDataBeatType,
Acquire.prefetchType -> Grant.prefetchAckType))
Acquire.getPrefetchType -> Grant.prefetchAckType,
Acquire.putPrefetchType -> Grant.prefetchAckType))
}
def makeUnion(
@ -348,7 +351,8 @@ object Acquire {
Acquire.putType -> Cat(wmask, alloc),
Acquire.putBlockType -> Cat(wmask, alloc),
Acquire.putAtomicType -> Cat(addr_byte, operand_size, opcode, alloc),
Acquire.prefetchType -> Cat(opcode, alloc)))
Acquire.getPrefetchType -> Cat(M_XRD, alloc),
Acquire.putPrefetchType -> Cat(M_XWR, alloc)))
}
def fullWriteMask(implicit p: Parameters) = SInt(-1, width = p(TLKey(p(TLId))).writeMaskBits).toUInt
@ -489,10 +493,9 @@ object GetPrefetch {
addr_block: UInt)
(implicit p: Parameters): Acquire = {
BuiltInAcquireBuilder(
a_type = Acquire.prefetchType,
a_type = Acquire.getPrefetchType,
client_xact_id = client_xact_id,
addr_block = addr_block,
opcode = M_XRD)
addr_block = addr_block)
}
}
@ -587,10 +590,9 @@ object PutPrefetch {
addr_block: UInt)
(implicit p: Parameters): Acquire = {
BuiltInAcquireBuilder(
a_type = Acquire.prefetchType,
a_type = Acquire.putPrefetchType,
client_xact_id = client_xact_id,
addr_block = addr_block,
opcode = M_XWR)
addr_block = addr_block)
}
}