riscv/rocket-chip
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diplomacy: implement DisableMonitors scope

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This commit is contained in:
Wesley W. Terpstra
2017-09-07 14:25:33 -07:00
parent a450357744
commit 1365c5f90c
5 changed files with 36 additions and 24 deletions
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14
src/main/scala/rocket/ScratchpadSlavePort.scala
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@ -103,16 +103,18 @@ trait CanHaveScratchpad extends HasHellaCache with HasICacheFrontend with HasCor
val slaveNode = TLInputNode() // Up to two uses for this input node:
// 1) Frontend always exists, but may or may not have a scratchpad node
// 2) ScratchpadSlavePort always has a node, but only exists when the HellaCache has a scratchpad
val fg = LazyModule(new TLFragmenter(fetchWidth*coreInstBytes, p(CacheBlockBytes), earlyAck=true))
val ww = LazyModule(new TLWidthWidget(xLen/8))
frontend.slaveNode connectButDontMonitorSlaves fg.node
fg.node connectButDontMonitorSlaves ww.node
ww.node connectButDontMonitorSlaves slaveNode
// 2) ScratchpadSlavePort always has a node, but only exists when the HellaCache has a scratchpad
val scratch = tileParams.dcache.flatMap(d => d.scratch.map(s =>
LazyModule(new ScratchpadSlavePort(AddressSet(s, d.dataScratchpadBytes-1)))))
scratch foreach { lm => lm.node connectButDontMonitor TLFragmenter(xLen/8, p(CacheBlockBytes), earlyAck=true)(slaveNode) }
DisableMonitors { implicit p =>
frontend.slaveNode :*= fg.node
fg.node :*= ww.node
ww.node :*= slaveNode
scratch foreach { lm => lm.node := TLFragmenter(xLen/8, p(CacheBlockBytes), earlyAck=true)(slaveNode) }
}
def findScratchpadFromICache: Option[AddressSet] = scratch.map { s =>
val finalNode = frontend.masterNode.edgesOut.head.manager.managers.find(_.nodePath.last == s.node)