riscv/rocket-chip
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coreplex: first cut at using RocketCrossingParams

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This commit is contained in:
Henry Cook
2017-10-09 23:43:18 -07:00
parent d6766a8c68
commit 9026646459
8 changed files with 65 additions and 41 deletions
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43
src/main/scala/coreplex/RocketCoreplex.scala
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@ -11,8 +11,23 @@ import freechips.rocketchip.tile._
import freechips.rocketchip.tilelink._
import freechips.rocketchip.util._
// TODO: how specific are these to RocketTiles?
case class TilePortParams(
addBuffers: Int = 0,
blockerCtrlAddr: Option[BigInt] = None)
case class RocketCrossingParams(
crossingType: CoreplexClockCrossing = SynchronousCrossing(),
master: TilePortParams = TilePortParams(),
slave: TilePortParams = TilePortParams()) {
def knownRatio: Option[Int] = crossingType match {
case RationalCrossing(_) => Some(2)
case _ => None
}
}
case object RocketTilesKey extends Field[Seq[RocketTileParams]](Nil)
case object RocketCrossing extends Field[CoreplexClockCrossing](SynchronousCrossing())
case object RocketCrossingKey extends Field[Seq[RocketCrossingParams]](List(RocketCrossingParams()))
trait HasRocketTiles extends HasTiles
with HasPeripheryBus
@ -21,35 +36,43 @@ trait HasRocketTiles extends HasTiles
with HasPeripheryDebug {
val module: HasRocketTilesModuleImp
private val crossing = p(RocketCrossing)
protected val tileParams = p(RocketTilesKey)
private val NumRocketTiles = tileParams.size
private val crossingParams = p(RocketCrossingKey)
private val crossings = crossingParams.size match {
case 1 => List.fill(NumRocketTiles) { crossingParams.head }
case NumRocketTiles => crossingParams
case _ => throw new Exception("RocketCrossingKey.size must == 1 or == RocketTilesKey.size")
}
// Make a wrapper for each tile that will wire it to coreplex devices and crossbars,
// according to the specified type of clock crossing.
val tiles: Seq[BaseTile] = localIntNodes.zip(tileParams).map { case (lip, tp) =>
private val crossingTuples = localIntNodes.zip(tileParams).zip(crossings)
val tiles: Seq[BaseTile] = crossingTuples.map { case ((lip, tp), crossing) =>
val pWithExtra = p.alterPartial {
case TileKey => tp
case BuildRoCC => tp.rocc
case SharedMemoryTLEdge => sharedMemoryTLEdge
case RocketCrossingKey => List(crossing)
}
val wrapper = crossing match {
val wrapper = crossing.crossingType match {
case SynchronousCrossing(params) => {
val wrapper = LazyModule(new SyncRocketTile(tp)(pWithExtra))
sbus.fromSyncTiles(params, tp.externalMasterBuffers, tp.name) :=* wrapper.masterNode
FlipRendering { implicit p => wrapper.slaveNode :*= pbus.toSyncSlaves(tp.name, tp.externalSlaveBuffers) }
sbus.fromSyncTiles(params, crossing.master, tp.name) :=* wrapper.masterNode
FlipRendering { implicit p => wrapper.slaveNode :*= pbus.toSyncSlaves(tp.name, crossing.slave.addBuffers) }
wrapper
}
case AsynchronousCrossing(depth, sync) => {
val wrapper = LazyModule(new AsyncRocketTile(tp)(pWithExtra))
sbus.fromAsyncTiles(depth, sync, tp.externalMasterBuffers, tp.name) :=* wrapper.masterNode
FlipRendering { implicit p => wrapper.slaveNode :*= pbus.toAsyncSlaves(sync, tp.name, tp.externalSlaveBuffers) }
sbus.fromAsyncTiles(depth, sync, crossing.master, tp.name) :=* wrapper.masterNode
FlipRendering { implicit p => wrapper.slaveNode :*= pbus.toAsyncSlaves(sync, tp.name, crossing.slave.addBuffers) }
wrapper
}
case RationalCrossing(direction) => {
val wrapper = LazyModule(new RationalRocketTile(tp)(pWithExtra))
sbus.fromRationalTiles(direction, tp.externalMasterBuffers, tp.name) :=* wrapper.masterNode
FlipRendering { implicit p => wrapper.slaveNode :*= pbus.toRationalSlaves(tp.name, tp.externalSlaveBuffers) }
sbus.fromRationalTiles(direction, crossing.master, tp.name) :=* wrapper.masterNode
FlipRendering { implicit p => wrapper.slaveNode :*= pbus.toRationalSlaves(tp.name, crossing.slave.addBuffers) }
wrapper
}
}