rocket-chip/src/main/scala/uncore/tilelink2/package.scala

package uncore

import Chisel._
import diplomacy._

package object tilelink2
{
  type TLOutwardNode = OutwardNode[TLClientPortParameters, TLManagerPortParameters, TLBundle]
  type TLAsyncOutwardNode = OutwardNode[TLAsyncClientPortParameters, TLAsyncManagerPortParameters, TLAsyncBundle]
  type IntOutwardNode = OutwardNode[IntSourcePortParameters, IntSinkPortParameters, Vec[Bool]]
  def OH1ToUInt(x: UInt) = OHToUInt((x << 1 | UInt(1)) ^ x)
  def UIntToOH1(x: UInt, width: Int) = ~(SInt(-1, width=width).asUInt << x)(width-1, 0)
  def trailingZeros(x: Int) = if (x > 0) Some(log2Ceil(x & -x)) else None
  def highOR(x: UInt) = {
    val w = x.getWidth
    def helper(s: Int, x: UInt): UInt =
      if (s >= w) x else helper(s+s, x | (x << s)(w-1,0))
    helper(1, x)
  }
}