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Merge pull request #810 from freechipsproject/isp-fixes

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ISP fixes
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Henry Cook 2017-06-20 16:35:06 -07:00 committed by GitHub
commit 7521050a48
1 changed files with 7 additions and 5 deletions
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12
src/main/scala/uncore/tilelink2/Splitter.scala
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@ -6,7 +6,7 @@ import Chisel._
import config._
import diplomacy._
class TLSplitter(policy: TLArbiter.Policy = TLArbiter.lowestIndexFirst)(implicit p: Parameters) extends LazyModule
class TLSplitter(policy: TLArbiter.Policy = TLArbiter.roundRobin)(implicit p: Parameters) extends LazyModule
{
val node = TLSplitterNode(
clientFn = { case SplitterArg(newSize, ports) =>
@ -21,14 +21,14 @@ class TLSplitter(policy: TLArbiter.Policy = TLArbiter.lowestIndexFirst)(implicit
seq(0).copy(
minLatency = seq.map(_.minLatency).min,
endSinkId = outputIdRanges.map(_.map(_.end).getOrElse(0)).max,
managers = ManagerUnification(seq.zipWithIndex.flatMap { case (port, i) =>
managers = seq.zipWithIndex.flatMap { case (port, i) =>
require (port.beatBytes == seq(0).beatBytes,
s"Splitter data widths don't match: ${port.managers.map(_.name)} has ${port.beatBytes}B vs ${seq(0).managers.map(_.name)} has ${seq(0).beatBytes}B")
val fifoIdMapper = fifoIdFactory()
port.managers map { manager => manager.copy(
fifoId = manager.fifoId.map(fifoIdMapper(_))
)}
})
}
)
}
})
@ -42,7 +42,9 @@ class TLSplitter(policy: TLArbiter.Policy = TLArbiter.lowestIndexFirst)(implicit
def group[T](x: Seq[T]) =
if (x.isEmpty) Nil else x.grouped(node.edgesIn.size).toList.transpose
((node.edgesIn zip io.in) zip (group(node.edgesOut) zip group(io.out))) foreach {
if (node.edgesIn.size <= 1) {
io.out <> io.in
} else ((node.edgesIn zip io.in) zip (group(node.edgesOut) zip group(io.out))) foreach {
case ((edgeIn, io_in), (edgesOut, io_out)) =>
// Grab the port ID mapping
@ -51,7 +53,7 @@ class TLSplitter(policy: TLArbiter.Policy = TLArbiter.lowestIndexFirst)(implicit
// Find a good mask for address decoding
val port_addrs = edgesOut.map(_.manager.managers.map(_.address).flatten)
val routingMask = AddressDecoder(port_addrs)
val route_addrs = port_addrs.map(_.map(_.widen(~routingMask)).distinct)
val route_addrs = port_addrs.map(seq => AddressSet.unify(seq.map(_.widen(~routingMask)).distinct))
val outputPorts = route_addrs.map(seq => (addr: UInt) => seq.map(_.contains(addr)).reduce(_ || _))
// We need an intermediate size of bundle with the widest possible identifiers