riscv/rocket-chip
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diplomacy: support :=? for unknown star inference

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This commit is contained in:
Wesley W. Terpstra 2017-09-06 15:30:25 -07:00
parent 6bfea86dbf
commit 1b705f62f6
2 changed files with 45 additions and 1 deletions
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29
src/main/scala/diplomacy/Nodes.scala
View File

@ -4,10 +4,27 @@ package freechips.rocketchip.diplomacy
import Chisel._
import chisel3.internal.sourceinfo.SourceInfo
import freechips.rocketchip.config.Parameters
import freechips.rocketchip.config.{Parameters,Field}
import freechips.rocketchip.util.HeterogeneousBag
import scala.collection.mutable.ListBuffer
object CardinalityInferenceDirection {
val cases = Seq(SOURCE_TO_SINK, SINK_TO_SOURCE, NO_INFERENCE)
sealed trait T {
def flip = this match {
case SOURCE_TO_SINK => SINK_TO_SOURCE
case SINK_TO_SOURCE => SOURCE_TO_SINK
case NO_INFERENCE => NO_INFERENCE
}
}
case object SOURCE_TO_SINK extends T
case object SINK_TO_SOURCE extends T
case object NO_INFERENCE extends T
}
case object CardinalityInferenceDirectionKey extends Field[CardinalityInferenceDirection.T]
// DI = Downwards flowing Parameters received on the inner side of the node
// UI = Upwards flowing Parameters generated by the inner side of the node
// EI = Edge Parameters describing a connection on the inner side of the node
@ -84,6 +101,8 @@ trait InwardNodeHandle[DI, UI, BI <: Data]
inward.:*=(h)(p, sourceInfo)
def :=* (h: OutwardNodeHandle[DI, UI, BI])(implicit p: Parameters, sourceInfo: SourceInfo): Option[MonitorBase] =
inward.:=*(h)(p, sourceInfo)
def :=? (h: OutwardNodeHandle[DI, UI, BI])(implicit p: Parameters, sourceInfo: SourceInfo): Option[MonitorBase] =
inward.:=?(h)(p, sourceInfo)
}
sealed trait NodeBinding
@ -264,6 +283,14 @@ abstract class MixedNode[DI, UI, EI, BI <: Data, DO, UO, EO, BO <: Data](
override def := (h: OutwardNodeHandle[DI, UI, BI])(implicit p: Parameters, sourceInfo: SourceInfo): Option[MonitorBase] = bind(h, BIND_ONCE, true)
override def :*= (h: OutwardNodeHandle[DI, UI, BI])(implicit p: Parameters, sourceInfo: SourceInfo): Option[MonitorBase] = bind(h, BIND_STAR, true)
override def :=* (h: OutwardNodeHandle[DI, UI, BI])(implicit p: Parameters, sourceInfo: SourceInfo): Option[MonitorBase] = bind(h, BIND_QUERY, true)
override def :=? (h: OutwardNodeHandle[DI, UI, BI])(implicit p: Parameters, sourceInfo: SourceInfo): Option[MonitorBase] = {
p.lift(CardinalityInferenceDirectionKey) match {
case Some(CardinalityInferenceDirection.SOURCE_TO_SINK) => this :=* h
case Some(CardinalityInferenceDirection.SINK_TO_SOURCE) => this :*= h
case Some(CardinalityInferenceDirection.NO_INFERENCE) => this := h
case None => this := h
}
}
def connectButDontMonitor(h: OutwardNodeHandle[DI, UI, BI])(implicit p: Parameters, sourceInfo: SourceInfo): Option[MonitorBase] = bind(h, BIND_ONCE, false)
def connectButDontMonitorSlaves(h: OutwardNodeHandle[DI, UI, BI])(implicit p: Parameters, sourceInfo: SourceInfo): Option[MonitorBase] = bind(h, BIND_STAR, false)

17
src/main/scala/diplomacy/package.scala
View File

@ -3,6 +3,7 @@
package freechips.rocketchip
import chisel3.internal.sourceinfo.{SourceInfo, SourceLine, UnlocatableSourceInfo}
import freechips.rocketchip.config.Parameters
package object diplomacy
{
@ -20,4 +21,20 @@ package object diplomacy
bitIndexes(x.clearBit(lowest), lowest +: tail)
}
}
def LeftStar[T](body: Parameters => T)(implicit p: Parameters) = body(p.alterPartial {
case CardinalityInferenceDirectionKey => CardinalityInferenceDirection.SINK_TO_SOURCE
})
def RightStar[T](body: Parameters => T)(implicit p: Parameters) = body(p.alterPartial {
case CardinalityInferenceDirectionKey => CardinalityInferenceDirection.SOURCE_TO_SINK
})
def NoStar[T](body: Parameters => T)(implicit p: Parameters) = body(p.alterPartial {
case CardinalityInferenceDirectionKey => CardinalityInferenceDirection.NO_INFERENCE
})
def FlipStar[T](body: Parameters => T)(implicit p: Parameters) = body(p.alterPartial {
case CardinalityInferenceDirectionKey => p
.lift(CardinalityInferenceDirectionKey)
.map(_.flip)
.getOrElse(CardinalityInferenceDirection.NO_INFERENCE)
})
}