[util] move LatencyPipe into util

src/main/scala/rocketchip/TestHarness.scala

@@ -5,6 +5,7 @@ package rocketchip
 import Chisel._
 import cde.{Parameters, Field}
 import rocket.Util._
+import util.LatencyPipe
 import junctions._
 import junctions.NastiConstants._
 
@@ -175,23 +176,3 @@ class JTAGVPI(implicit val p: Parameters) extends BlackBox {
     tbsuccess := Bool(false)
   }
 }
-
-class LatencyPipe[T <: Data](typ: T, latency: Int) extends Module {
-  val io = new Bundle {
-    val in = Decoupled(typ).flip
-    val out = Decoupled(typ)
-  }
-
-  def doN[T](n: Int, func: T => T, in: T): T =
-    (0 until n).foldLeft(in)((last, _) => func(last))
-
-  io.out <> doN(latency, (last: DecoupledIO[T]) => Queue(last, 1, pipe=true), io.in)
-}
-
-object LatencyPipe {
-  def apply[T <: Data](in: DecoupledIO[T], latency: Int): DecoupledIO[T] = {
-    val pipe = Module(new LatencyPipe(in.bits, latency))
-    pipe.io.in <> in
-    pipe.io.out
-  }
-}

src/main/scala/util/LatencyPipe.scala

@@ -0,0 +1,25 @@
+// See LICENSE for license details.
+
+package util
+
+import Chisel._
+
+class LatencyPipe[T <: Data](typ: T, latency: Int) extends Module {
+  val io = new Bundle {
+    val in = Decoupled(typ).flip
+    val out = Decoupled(typ)
+  }
+
+  def doN[T](n: Int, func: T => T, in: T): T =
+    (0 until n).foldLeft(in)((last, _) => func(last))
+
+  io.out <> doN(latency, (last: DecoupledIO[T]) => Queue(last, 1, pipe=true), io.in)
+}
+
+object LatencyPipe {
+  def apply[T <: Data](in: DecoupledIO[T], latency: Int): DecoupledIO[T] = {
+    val pipe = Module(new LatencyPipe(in.bits, latency))
+    pipe.io.in <> in
+    pipe.io.out
+  }
+}