2012-12-12 09:05:28 +01:00
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package object uncore {
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import Chisel._
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2012-10-16 03:52:48 +02:00
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2013-01-07 22:57:48 +01:00
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//TODO: Remove these Networking classes from the package object once Scala bug
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//SI-3439 is resolved.
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2012-12-12 09:05:28 +01:00
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case class PhysicalNetworkConfiguration(nEndpoints: Int, idBits: Int)
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class PhysicalHeader(implicit conf: PhysicalNetworkConfiguration) extends Bundle {
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val src = UFix(width = conf.idBits)
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val dst = UFix(width = conf.idBits)
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}
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abstract class PhysicalNetworkIO[T <: Data]()(data: => T)(implicit conf: PhysicalNetworkConfiguration) extends FIFOIO()(data) {
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val header = (new PhysicalHeader).asOutput
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}
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class BasicCrossbarIO[T <: Data]()(data: => T)(implicit conf: PhysicalNetworkConfiguration) extends PhysicalNetworkIO()(data)(conf)
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abstract class PhysicalNetwork(conf: PhysicalNetworkConfiguration) extends Component
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class BasicCrossbar[T <: Data]()(data: => T)(implicit conf: PhysicalNetworkConfiguration) extends PhysicalNetwork(conf) {
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val io = new Bundle {
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val in = Vec(conf.nEndpoints) { (new BasicCrossbarIO) { data } }.flip
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val out = Vec(conf.nEndpoints) { (new BasicCrossbarIO) { data } }
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}
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2013-01-07 22:57:48 +01:00
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val rdyVecs = List.fill(conf.nEndpoints)(Vec(conf.nEndpoints){Bool()})
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io.out.zip(rdyVecs).zipWithIndex.map{ case ((out, rdys), i) => {
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2012-12-12 09:05:28 +01:00
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val rrarb = new RRArbiter(conf.nEndpoints)(data)
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2013-01-07 22:57:48 +01:00
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(rrarb.io.in, io.in, rdys).zipped.map{ case (arb, in, rdy) => {
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arb.valid := in.valid && (in.header.dst === UFix(i))
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arb.bits := in.bits
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rdy := arb.ready && (in.header.dst === UFix(i))
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}}
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out <> rrarb.io.out
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out.header.src := rrarb.io.chosen.toUFix
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out.header.dst := UFix(i)
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}}
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for(i <- 0 until conf.nEndpoints) {
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io.in(i).ready := rdyVecs.map(r => r(i)).reduceLeft(_||_)
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2012-12-12 09:05:28 +01:00
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}
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}
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case class LogicalNetworkConfiguration(nEndpoints: Int, idBits: Int, nHubs: Int, nTiles: Int)
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2012-12-13 20:39:14 +01:00
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abstract class LogicalNetwork[TileLinkType <: Bundle](endpoints: Seq[CoherenceAgent])(implicit conf: LogicalNetworkConfiguration) extends Component {
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2012-12-12 09:05:28 +01:00
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val io: Vec[TileLinkType]
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val physicalNetworks: Seq[PhysicalNetwork]
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require(endpoints.length == conf.nEndpoints)
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2012-10-16 03:52:48 +02:00
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}
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2012-12-12 09:05:28 +01:00
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class LogicalHeader(implicit conf: LogicalNetworkConfiguration) extends Bundle {
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val src = UFix(width = conf.idBits)
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val dst = UFix(width = conf.idBits)
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}
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abstract class LogicalNetworkIO[T <: Data]()(data: => T)(implicit conf: LogicalNetworkConfiguration) extends FIFOIO()(data) {
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val header = (new LogicalHeader).asOutput
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}
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class TileIO[T <: Data]()(data: => T)(implicit conf: LogicalNetworkConfiguration) extends LogicalNetworkIO()(data)(conf)
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class HubIO[T <: Data]()(data: => T)(implicit conf: LogicalNetworkConfiguration) extends LogicalNetworkIO()(data)(conf){flip()}
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2013-01-07 22:57:48 +01:00
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class TileLinkIO(implicit conf: LogicalNetworkConfiguration) extends Bundle {
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2012-12-12 09:05:28 +01:00
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val xact_init = (new TileIO) { new TransactionInit }
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val xact_init_data = (new TileIO) { new TransactionInitData }
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val xact_abort = (new HubIO) { new TransactionAbort }
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val probe_req = (new HubIO) { new ProbeRequest }
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val probe_rep = (new TileIO) { new ProbeReply }
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val probe_rep_data = (new TileIO) { new ProbeReplyData }
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val xact_rep = (new HubIO) { new TransactionReply }
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val xact_finish = (new TileIO) { new TransactionFinish }
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2013-01-07 22:57:48 +01:00
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override def clone = { new TileLinkIO().asInstanceOf[this.type] }
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2012-12-12 09:05:28 +01:00
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}
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}
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