tilelink2: add a Buffer adapter to insert pipeline stages
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uncore/src/main/scala/tilelink2/Buffer.scala
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30
uncore/src/main/scala/tilelink2/Buffer.scala
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// See LICENSE for license details.
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package uncore.tilelink2
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import Chisel._
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class TLBuffer(entries: Int = 2, pipe: Boolean = false) extends LazyModule
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{
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val node = TLIdentityNode()
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lazy val module = Module(new LazyModuleImp(this) {
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val io = new Bundle {
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val in = node.bundleIn
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val out = node.bundleOut
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}
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val in = io.in(0)
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val out = io.out(0)
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out.a <> Queue(in .a, entries, pipe)
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in .d <> Queue(out.d, entries, pipe)
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val edge = node.edgesOut(0) // same as edgeIn(0)
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if (edge.manager.anySupportAcquire && edge.client.anySupportProbe) {
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in .b <> Queue(out.b, entries, pipe)
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out.c <> Queue(in .c, entries, pipe)
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out.e <> Queue(out.e, entries, pipe)
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}
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})
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}
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