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PeripheryErrorSlave: do not put a TLMonitor between the fragmenter and slave

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This edge has the largest number of source bits by far. Let's just exclude it.
This commit is contained in:
Wesley W. Terpstra 2017-06-13 16:04:57 -07:00
parent 94f85e8bc8
commit b4b165112c
1 changed files with 5 additions and 1 deletions
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6
src/main/scala/rocketchip/Periphery.scala
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@ -346,7 +346,11 @@ trait HasPeripheryErrorSlave extends HasSystemNetworks {
private val config = p(ErrorConfig)
private val maxXfer = min(config.address.map(_.alignment).max.toInt, 4096)
val error = LazyModule(new TLError(config.address, peripheryBusConfig.beatBytes))
error.node := TLFragmenter(peripheryBusConfig.beatBytes, maxXfer)(peripheryBus.node)
// Override the default Parameters to exclude the TLMonitor between the Fragmenter and error slave.
// Most slaves do not support a 4kB burst so this slave ends up with many more source bits than others.
private def sourceInfo(implicit x: chisel3.internal.sourceinfo.SourceInfo) = x
error.node.:=(TLFragmenter(peripheryBusConfig.beatBytes, maxXfer)(peripheryBus.node))(new WithoutTLMonitors ++ p, sourceInfo)
}