riscv/rocket-chip
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diplomacy: support zero-port Nodes

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This commit is contained in:
Wesley W. Terpstra
2017-01-19 18:36:39 -08:00
parent c0496fab29
commit 9dc7f180b6
9 changed files with 48 additions and 45 deletions
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11
src/main/scala/uncore/ahb/Nodes.scala
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@ -11,14 +11,9 @@ object AHBImp extends NodeImp[AHBMasterPortParameters, AHBSlavePortParameters, A
{
def edgeO(pd: AHBMasterPortParameters, pu: AHBSlavePortParameters): AHBEdgeParameters = AHBEdgeParameters(pd, pu)
def edgeI(pd: AHBMasterPortParameters, pu: AHBSlavePortParameters): AHBEdgeParameters = AHBEdgeParameters(pd, pu)
def bundleO(eo: Seq[AHBEdgeParameters]): Vec[AHBBundle] = {
require (!eo.isEmpty)
Vec(eo.size, AHBBundle(eo.map(_.bundle).reduce(_.union(_))))
}
def bundleI(ei: Seq[AHBEdgeParameters]): Vec[AHBBundle] = {
require (!ei.isEmpty)
Vec(ei.size, AHBBundle(ei.map(_.bundle).reduce(_.union(_))))
}
def bundleO(eo: Seq[AHBEdgeParameters]): Vec[AHBBundle] = Vec(eo.size, AHBBundle(AHBBundleParameters.union(eo.map(_.bundle))))
def bundleI(ei: Seq[AHBEdgeParameters]): Vec[AHBBundle] = Vec(ei.size, AHBBundle(AHBBundleParameters.union(ei.map(_.bundle))))
def colour = "#00ccff" // bluish
override def labelI(ei: AHBEdgeParameters) = (ei.slave.beatBytes * 8).toString

3
src/main/scala/uncore/ahb/Parameters.scala
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@ -85,6 +85,9 @@ case class AHBBundleParameters(
object AHBBundleParameters
{
val emptyBundleParams = AHBBundleParameters(addrBits = 1, dataBits = 8)
def union(x: Seq[AHBBundleParameters]) = x.foldLeft(emptyBundleParams)((x,y) => x.union(y))
def apply(master: AHBMasterPortParameters, slave: AHBSlavePortParameters) =
new AHBBundleParameters(
addrBits = log2Up(slave.maxAddress+1),