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tilelink2: Hints are not special

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Hints have a TransferSize limit just like all other message types.
This commit is contained in:
Wesley W. Terpstra
2016-09-12 17:15:28 -07:00
parent ad8e563c89
commit ca5f98f138
5 changed files with 17 additions and 25 deletions
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8
src/main/scala/uncore/tilelink2/HintHandler.scala
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@ -9,8 +9,8 @@ import chisel3.internal.sourceinfo.SourceInfo
class TLHintHandler(supportManagers: Boolean = true, supportClients: Boolean = false, passthrough: Boolean = true) extends LazyModule
{
val node = TLAdapterNode(
clientFn = { case Seq(c) => if (supportClients) c.copy(clients = c.clients .map(_.copy(supportsHint = true))) else c },
managerFn = { case Seq(m) => if (supportManagers) m.copy(managers = m.managers.map(_.copy(supportsHint = true))) else m })
clientFn = { case Seq(c) => if (!supportClients) c else c.copy(clients = c.clients .map(_.copy(supportsHint = TransferSizes(1, c.maxTransfer)))) },
managerFn = { case Seq(m) => if (!supportManagers) m else m.copy(managers = m.managers.map(_.copy(supportsHint = TransferSizes(1, m.maxTransfer)))) })
lazy val module = new LazyModuleImp(this) {
val io = new Bundle {
@ -28,7 +28,7 @@ class TLHintHandler(supportManagers: Boolean = true, supportClients: Boolean = f
require (!supportClients || bce)
if (supportManagers) {
val handleA = if (passthrough) !edgeOut.manager.supportsHint(edgeIn.address(in.a.bits)) else Bool(true)
val handleA = if (passthrough) !edgeOut.manager.supportsHint(edgeIn.address(in.a.bits), edgeIn.size(in.a.bits)) else Bool(true)
val bypassD = handleA && in.a.bits.opcode === TLMessages.Hint
// Prioritize existing D traffic over HintAck
@ -50,7 +50,7 @@ class TLHintHandler(supportManagers: Boolean = true, supportClients: Boolean = f
}
if (supportClients) {
val handleB = if (passthrough) !edgeIn.client.supportsHint(out.b.bits.source) else Bool(true)
val handleB = if (passthrough) !edgeIn.client.supportsHint(out.b.bits.source, edgeOut.size(out.b.bits)) else Bool(true)
val bypassC = handleB && out.b.bits.opcode === TLMessages.Hint
// Prioritize existing C traffic over HintAck