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tilelink2: add a Buffer adapter to insert pipeline stages

This commit is contained in:
Wesley W. Terpstra 2016-08-31 15:53:25 -07:00
parent 50f0dee69e
commit 4a401fc480

View File

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// See LICENSE for license details.
package uncore.tilelink2
import Chisel._
class TLBuffer(entries: Int = 2, pipe: Boolean = false) extends LazyModule
{
val node = TLIdentityNode()
lazy val module = Module(new LazyModuleImp(this) {
val io = new Bundle {
val in = node.bundleIn
val out = node.bundleOut
}
val in = io.in(0)
val out = io.out(0)
out.a <> Queue(in .a, entries, pipe)
in .d <> Queue(out.d, entries, pipe)
val edge = node.edgesOut(0) // same as edgeIn(0)
if (edge.manager.anySupportAcquire && edge.client.anySupportProbe) {
in .b <> Queue(out.b, entries, pipe)
out.c <> Queue(in .c, entries, pipe)
out.e <> Queue(out.e, entries, pipe)
}
})
}