Bit of a rocket-chip specific question here, but I'm keen to try and access the raw interrupt inputs to a tile (mainly to route to a clock gate control).
I've tried adding the following to BaseTileModuleImp in BaseTile.scala:

  val ints = IO(Bool(OUTPUT))
  val ints_flat = outer.intXbar.intnode.in.map { case (i, e) => i.orR }
  ints := ints_flat.orR

Please forgive the hackiest Chisel in the world, I don't even know if that's the correct way of extracting and or-reducing the interrupt input vector from a sequence of tuples, but that doesn't work because, first of all, intXbar is protected inside the abstract class:

  protected val intXbar = LazyModule(new IntXbar)

and then if I juggle things around and remove the protected and put the ints_flat in the abstract class, it blows up with:

[error] Caused by: java.lang.IllegalArgumentException: requirement failed: intXbar.intnode.in should only be called from the context of its module implementation

In fact, most things I try end with that one.

I think diplomacy is in the way here - all I really want is to be able to pick off all of the raw interrupt lines. Anyone got any suggestions?