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Add ClientUncachedTileLinkEnqueuer utility

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This commit is contained in:
Andrew Waterman 2016-09-02 14:53:42 -07:00
parent 7aeb42fa55
commit e23e4d6de5
1 changed files with 22 additions and 0 deletions
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22
src/main/scala/uncore/util/Enqueuer.scala
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@ -6,6 +6,7 @@ import cde.Parameters
/** Struct for describing per-channel queue depths */
case class TileLinkDepths(acq: Int, prb: Int, rel: Int, gnt: Int, fin: Int)
case class UncachedTileLinkDepths(acq: Int, gnt: Int)
/** Optionally enqueues each [[uncore.TileLinkChannel]] individually */
class TileLinkEnqueuer(depths: TileLinkDepths)(implicit p: Parameters) extends Module {
@ -54,3 +55,24 @@ object ClientTileLinkEnqueuer {
apply(in, TileLinkDepths(depth, depth, depth, depth, depth))
}
}
class ClientUncachedTileLinkEnqueuer(depths: UncachedTileLinkDepths)(implicit p: Parameters) extends Module {
val io = new Bundle {
val inner = new ClientUncachedTileLinkIO().flip
val outer = new ClientUncachedTileLinkIO
}
io.outer.acquire <> (if(depths.acq > 0) Queue(io.inner.acquire, depths.acq) else io.inner.acquire)
io.inner.grant <> (if(depths.gnt > 0) Queue(io.outer.grant, depths.gnt) else io.outer.grant)
}
object ClientUncachedTileLinkEnqueuer {
def apply(in: ClientUncachedTileLinkIO, depths: UncachedTileLinkDepths)(implicit p: Parameters): ClientUncachedTileLinkIO = {
val t = Module(new ClientUncachedTileLinkEnqueuer(depths))
t.io.inner <> in
t.io.outer
}
def apply(in: ClientUncachedTileLinkIO, depth: Int)(implicit p: Parameters): ClientUncachedTileLinkIO = {
apply(in, UncachedTileLinkDepths(depth, depth))
}
}