riscv/rocket-chip
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change the way rocc is parameterized

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This commit is contained in:
Howard Mao 2015-12-01 17:54:56 -08:00
parent e80340198a
commit e76dfa55f7
1 changed files with 11 additions and 9 deletions
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18
rocket/src/main/scala/tile.scala
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@ -8,15 +8,16 @@ import Util._
import cde.{Parameters, Field}
case object CoreName extends Field[String]
case object BuildRoCC extends Field[Seq[Parameters => RoCC]]
case object RoccOpcodes extends Field[Seq[OpcodeSet]]
case object RoccAcceleratorMemChannels extends Field[Seq[Int]]
case object BuildRoCC extends Field[Seq[RoccParameters]]
case class RoccParameters(
opcodes: OpcodeSet,
generator: Parameters => RoCC,
nMemChannels: Int = 1)
abstract class Tile(resetSignal: Bool = null)
(implicit p: Parameters) extends Module(_reset = resetSignal) {
val buildRocc = p(BuildRoCC)
val roccOpcodes = p(RoccOpcodes)
val roccMemChannels = p(RoccAcceleratorMemChannels)
val usingRocc = !buildRocc.isEmpty
val nRocc = buildRocc.size
val nDCachePorts = 2 + nRocc
@ -66,13 +67,14 @@ class RocketTile(resetSignal: Bool = null)(implicit p: Parameters) extends Tile(
val respArb = Module(new RRArbiter(new RoCCResponse, nRocc))
core.io.rocc.resp <> respArb.io.out
val roccOpcodes = buildRocc.map(_.opcodes)
val cmdRouter = Module(new RoccCommandRouter(roccOpcodes))
cmdRouter.io.in <> core.io.rocc.cmd
val roccs = buildRocc.zip(roccMemChannels).zipWithIndex.map {
case ((buildItHere, nchannels), i) =>
val roccs = buildRocc.zipWithIndex.map {
case (RoccParameters(_, generator, nchannels), i) =>
val accelParams = p.alterPartial({ case RoccNMemChannels => nchannels })
val rocc = buildItHere(accelParams)
val rocc = generator(accelParams)
val dcIF = Module(new SimpleHellaCacheIF()(dcacheParams))
rocc.io.cmd <> cmdRouter.io.out(i)
rocc.io.s := core.io.rocc.s