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axi4: make maxFlight a per-master parameter

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This commit is contained in:
Wesley W. Terpstra
2017-04-25 18:49:33 -07:00
parent e1a072a644
commit d27e1928dd
5 changed files with 69 additions and 36 deletions
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12
src/main/scala/uncore/axi4/Parameters.scala
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@ -62,21 +62,21 @@ case class AXI4SlavePortParameters(
}
case class AXI4MasterParameters(
id: IdRange = IdRange(0, 1),
aligned: Boolean = false,
nodePath: Seq[BaseNode] = Seq())
id: IdRange = IdRange(0, 1),
aligned: Boolean = false,
maxFlight: Option[Int] = None, // None = infinite, else is a per-ID cap
nodePath: Seq[BaseNode] = Seq())
{
val name = nodePath.lastOption.map(_.lazyModule.name).getOrElse("disconnected")
maxFlight.foreach { m => require (m >= 0) }
}
case class AXI4MasterPortParameters(
masters: Seq[AXI4MasterParameters],
userBits: Int = 0,
maxFlight: Int = 0) // at most X transactions per ID (0 = unlimited)
userBits: Int = 0)
{
val endId = masters.map(_.id.end).max
require (userBits >= 0)
require (maxFlight >= 0)
// Require disjoint ranges for ids
masters.combinations(2).foreach { case Seq(x,y) => require (!x.id.overlaps(y.id), s"$x and $y overlap") }