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tilelink2: maxLgSize should be accurate (#332)

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Wesley W. Terpstra 2016-09-22 22:06:22 -07:00 committed by GitHub
parent 7ee79efc15
commit 47843d8ec1
2 changed files with 7 additions and 3 deletions
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4
src/main/scala/uncore/tilelink2/Edges.scala
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@ -216,11 +216,15 @@ class TLEdge(
x match {
case _: TLBundleE => UInt(0)
case bundle: TLDataChannel => {
if (maxLgSize == 0) {
UInt(0)
} else {
val decode = UIntToOH1(size(bundle), maxLgSize) >> log2Ceil(manager.beatBytes)
Mux(hasData(bundle), decode, UInt(0))
}
}
}
}
}
class TLEdgeOut(

2
src/main/scala/uncore/tilelink2/Parameters.scala
View File

@ -383,7 +383,7 @@ case class TLEdgeParameters(
manager: TLManagerPortParameters)
{
val maxTransfer = max(client.maxTransfer, manager.maxTransfer)
val maxLgSize = log2Up(maxTransfer)
val maxLgSize = log2Ceil(maxTransfer)
// Sanity check the link...
require (maxTransfer >= manager.beatBytes)