fix combinational loop in TileLink Unwrapper
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@ -1313,8 +1313,12 @@ class ClientTileLinkIOUnwrapper(implicit p: Parameters) extends TLModule()(p) {
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val acqArb = Module(new LockingRRArbiter(new Acquire, 2, tlDataBeats,
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Some((acq: Acquire) => acq.hasMultibeatData())))
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val roqArb = Module(new RRArbiter(new ReorderQueueWrite(
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new ClientTileLinkIOUnwrapperInfo, tlClientXactIdBits), 2))
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val acqRoq = Module(new ReorderQueue(
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Bool(), tlClientXactIdBits, tlMaxClientsPerPort))
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val relRoq = Module(new ReorderQueue(
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Bool(), tlClientXactIdBits, tlMaxClientsPerPort))
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val iacq = io.in.acquire.bits
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val irel = io.in.release.bits
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@ -1323,8 +1327,8 @@ class ClientTileLinkIOUnwrapper(implicit p: Parameters) extends TLModule()(p) {
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val acq_roq_enq = needsRoqEnq(iacq)
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val rel_roq_enq = needsRoqEnq(irel)
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val acq_roq_ready = !acq_roq_enq || roqArb.io.in(0).ready
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val rel_roq_ready = !rel_roq_enq || roqArb.io.in(1).ready
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val acq_roq_ready = !acq_roq_enq || acqRoq.io.enq.ready
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val rel_roq_ready = !rel_roq_enq || relRoq.io.enq.ready
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val acq_helper = DecoupledHelper(
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io.in.acquire.valid,
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@ -1336,10 +1340,9 @@ class ClientTileLinkIOUnwrapper(implicit p: Parameters) extends TLModule()(p) {
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rel_roq_ready,
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acqArb.io.in(1).ready)
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roqArb.io.in(0).valid := acq_helper.fire(acq_roq_ready, acq_roq_enq)
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roqArb.io.in(0).bits.data.voluntary := Bool(false)
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roqArb.io.in(0).bits.data.builtin := iacq.isBuiltInType()
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roqArb.io.in(0).bits.tag := iacq.client_xact_id
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acqRoq.io.enq.valid := acq_helper.fire(acq_roq_ready, acq_roq_enq)
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acqRoq.io.enq.bits.data := iacq.isBuiltInType()
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acqRoq.io.enq.bits.tag := iacq.client_xact_id
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acqArb.io.in(0).valid := acq_helper.fire(acqArb.io.in(0).ready)
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acqArb.io.in(0).bits := Acquire(
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@ -1351,13 +1354,12 @@ class ClientTileLinkIOUnwrapper(implicit p: Parameters) extends TLModule()(p) {
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addr_beat = iacq.addr_beat,
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data = iacq.data,
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union = Mux(iacq.isBuiltInType(),
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iacq.union, Cat(Acquire.fullWriteMask, Bool(false))))
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iacq.union, Cat(MT_Q, M_XRD, Bool(true))))
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io.in.acquire.ready := acq_helper.fire(io.in.acquire.valid)
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roqArb.io.in(1).valid := rel_helper.fire(rel_roq_ready, rel_roq_enq)
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roqArb.io.in(1).bits.data.voluntary := irel.isVoluntary()
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roqArb.io.in(1).bits.data.builtin := Bool(true)
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roqArb.io.in(1).bits.tag := irel.client_xact_id
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relRoq.io.enq.valid := rel_helper.fire(rel_roq_ready, rel_roq_enq)
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relRoq.io.enq.bits.data := irel.isVoluntary()
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relRoq.io.enq.bits.tag := irel.client_xact_id
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acqArb.io.in(1).valid := rel_helper.fire(acqArb.io.in(1).ready)
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acqArb.io.in(1).bits := PutBlock(
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@ -1370,25 +1372,33 @@ class ClientTileLinkIOUnwrapper(implicit p: Parameters) extends TLModule()(p) {
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io.out.acquire <> acqArb.io.out
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val roq = Module(new ReorderQueue(
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new ClientTileLinkIOUnwrapperInfo, tlClientXactIdBits, tlMaxClientsPerPort))
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roq.io.enq <> roqArb.io.out
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roq.io.deq.valid := io.out.grant.valid && needsRoqDeq(ognt)
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roq.io.deq.tag := ognt.client_xact_id
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acqRoq.io.deq.valid := io.out.grant.fire() && needsRoqDeq(ognt)
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acqRoq.io.deq.tag := ognt.client_xact_id
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val gnt_builtin = roq.io.deq.data.builtin
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val gnt_voluntary = roq.io.deq.data.voluntary
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relRoq.io.deq.valid := io.out.grant.fire() && needsRoqDeq(ognt)
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relRoq.io.deq.tag := ognt.client_xact_id
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io.in.grant.valid := io.out.grant.valid
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io.in.grant.bits := Grant(
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val gnt_builtin = acqRoq.io.deq.data
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val gnt_voluntary = relRoq.io.deq.data
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val acq_grant = Grant(
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is_builtin_type = gnt_builtin,
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g_type = MuxCase(ognt.g_type, Seq(
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(!gnt_builtin, tlCoh.getExclusiveGrantType),
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(gnt_voluntary, Grant.voluntaryAckType))),
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g_type = Mux(gnt_builtin, ognt.g_type, tlCoh.getExclusiveGrantType),
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client_xact_id = ognt.client_xact_id,
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manager_xact_id = ognt.manager_xact_id,
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addr_beat = ognt.addr_beat,
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data = ognt.data)
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val rel_grant = Grant(
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is_builtin_type = Bool(true),
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g_type = Mux(gnt_voluntary, Grant.voluntaryAckType, ognt.g_type),
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client_xact_id = ognt.client_xact_id,
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manager_xact_id = ognt.manager_xact_id,
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addr_beat = ognt.addr_beat,
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data = ognt.data)
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io.in.grant.valid := io.out.grant.valid
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io.in.grant.bits := Mux(acqRoq.io.deq.matches, acq_grant, rel_grant)
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io.out.grant.ready := io.in.grant.ready
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io.in.probe.valid := Bool(false)
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@ -121,6 +121,7 @@ class ReorderQueue[T <: Data](dType: T, tagWidth: Int, size: Int)
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val valid = Bool(INPUT)
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val tag = UInt(INPUT, tagWidth)
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val data = dType.cloneType.asOutput
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val matches = Bool(OUTPUT)
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}
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val full = Bool(OUTPUT)
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}
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@ -130,10 +131,12 @@ class ReorderQueue[T <: Data](dType: T, tagWidth: Int, size: Int)
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val roq_free = Reg(init = Vec.fill(size)(Bool(true)))
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val roq_enq_addr = PriorityEncoder(roq_free)
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val roq_deq_addr = PriorityEncoder(roq_tags.map(_ === io.deq.tag))
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val roq_matches = roq_tags.map(_ === io.deq.tag)
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val roq_deq_addr = PriorityEncoder(roq_matches)
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io.enq.ready := roq_free.reduce(_ || _)
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io.deq.data := roq_data(roq_deq_addr)
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io.deq.matches := roq_matches.reduce(_ || _)
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when (io.enq.valid && io.enq.ready) {
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roq_data(roq_enq_addr) := io.enq.bits.data
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