tile: BaseTile refactor, pt 2

* 2 layer cake
* no more bundle traits, only call to IO

src/main/scala/rocket/Frontend.scala

@@ -315,10 +315,6 @@ trait HasICacheFrontend extends CanHavePTW { this: BaseTile =>
   nPTWPorts += 1
 }
 
-trait HasICacheFrontendBundle {
-  val outer: HasICacheFrontend
-}
-
 trait HasICacheFrontendModule extends CanHavePTWModule {
   val outer: HasICacheFrontend
   ptwPorts += outer.frontend.module.io.ptw

src/main/scala/rocket/HellaCache.scala

@@ -194,7 +194,7 @@ class HellaCacheModule(outer: HellaCache) extends LazyModuleImp(outer)
 
 /** Mix-ins for constructing tiles that have a HellaCache */
 
-trait HasHellaCache extends HasTileParameters { this: BaseTile =>
+trait HasHellaCache { this: BaseTile =>
   val module: HasHellaCacheModule
   implicit val p: Parameters
   def findScratchpadFromICache: Option[AddressSet]
@@ -207,13 +207,8 @@ trait HasHellaCache extends HasTileParameters { this: BaseTile =>
   tlMasterXbar.node := dcache.node
 }
 
-trait HasHellaCacheBundle {
-  val outer: HasHellaCache
-}
-
 trait HasHellaCacheModule {
   val outer: HasHellaCache
-  //val io: HasHellaCacheBundle
   val dcachePorts = ListBuffer[HellaCacheIO]()
   val dcacheArb = Module(new HellaCacheArbiter(outer.nDCachePorts)(outer.p))
   outer.dcache.module.io.cpu <> dcacheArb.io.mem

src/main/scala/rocket/PTW.scala

@@ -287,8 +287,7 @@ class PTW(n: Int)(implicit edge: TLEdgeOut, p: Parameters) extends CoreModule()(
 }
 
 /** Mix-ins for constructing tiles that might have a PTW */
-trait CanHavePTW extends HasHellaCache { this: BaseTile =>
-  implicit val p: Parameters
+trait CanHavePTW extends HasTileParameters with HasHellaCache { this: BaseTile =>
   val module: CanHavePTWModule
   var nPTWPorts = 1
   nDCachePorts += usingPTW.toInt

src/main/scala/rocket/ScratchpadSlavePort.scala

@@ -137,10 +137,6 @@ trait CanHaveScratchpad extends HasHellaCache with HasICacheFrontend { this: Bas
   nDCachePorts += (scratch.isDefined).toInt
 }
 
-trait CanHaveScratchpadBundle extends HasHellaCacheBundle with HasICacheFrontendBundle {
-  val outer: CanHaveScratchpad
-}
-
 trait CanHaveScratchpadModule extends HasHellaCacheModule with HasICacheFrontendModule {
   val outer: CanHaveScratchpad