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diplomacy: remove node arity and allow empty Nexus nodes (Xbars)

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This removes the mostly obsolete 'numIn/Out' range restrictions on nodes.
It also makes it possible to connect optional crossbars that disappear.

val x = TLXbar()
x := master
slave := x

val y = TLXbar()
x :=* y // only connect y if it gets used

This will create crossbar x, but crossbar y will disappear.
This commit is contained in:
Wesley W. Terpstra
2017-11-30 14:43:43 -08:00
parent 6a25a3b7ac
commit e489c4226e
16 changed files with 155 additions and 182 deletions
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6
src/main/scala/amba/ahb/Nodes.scala
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@ -24,10 +24,8 @@ case class AHBMasterNode(portParams: Seq[AHBMasterPortParameters])(implicit valN
case class AHBSlaveNode(portParams: Seq[AHBSlavePortParameters])(implicit valName: ValName) extends SinkNode(AHBImp)(portParams)
case class AHBNexusNode(
masterFn: Seq[AHBMasterPortParameters] => AHBMasterPortParameters,
slaveFn: Seq[AHBSlavePortParameters] => AHBSlavePortParameters,
numMasterPorts: Range.Inclusive = 1 to 999,
numSlavePorts: Range.Inclusive = 1 to 999)(
slaveFn: Seq[AHBSlavePortParameters] => AHBSlavePortParameters)(
implicit valName: ValName)
extends NexusNode(AHBImp)(masterFn, slaveFn, numMasterPorts, numSlavePorts)
extends NexusNode(AHBImp)(masterFn, slaveFn)
case class AHBIdentityNode()(implicit valName: ValName) extends IdentityNode(AHBImp)()