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Merge branch 'master' into gh-pages

This commit is contained in:
Henry Cook 2015-05-07 12:35:14 -07:00
commit 90ced93eeb
2 changed files with 63 additions and 4 deletions

View File

@ -60,14 +60,14 @@ class MemPipeIO extends Bundle {
val resp = Valid(new MemResp).flip
}
class MemSerializedIO(w: Int) extends Bundle
{
class MemSerializedIO(w: Int) extends Bundle {
val req = Decoupled(Bits(width = w))
val resp = Valid(Bits(width = w)).flip
}
class MemSerdes(w: Int) extends MIFModule
class MemSerdes extends MIFModule
{
val w = params(HTIFWidth)
val io = new Bundle {
val wide = new MemIO().flip
val narrow = new MemSerializedIO(w)
@ -517,6 +517,65 @@ object HellaQueue
}
}
class MemIOArbiter(val arbN: Int) extends MIFModule {
val io = new Bundle {
val inner = Vec.fill(arbN){new MemIO}.flip
val outer = new MemIO
}
if(arbN > 1) {
val cmd_arb = Module(new RRArbiter(new MemReqCmd, arbN))
val choice_q = Module(new Queue(cmd_arb.io.chosen.clone, 4))
val (data_cnt, data_done) = Counter(io.outer.req_data.fire(), mifDataBeats)
io.inner.map(_.req_cmd).zipWithIndex.zip(cmd_arb.io.in).map{ case ((req, id), arb) => {
arb.valid := req.valid
arb.bits := req.bits
arb.bits.tag := Cat(req.bits.tag, UInt(id))
req.ready := arb.ready
}}
io.outer.req_cmd.bits := cmd_arb.io.out.bits
io.outer.req_cmd.valid := cmd_arb.io.out.valid && choice_q.io.enq.ready
cmd_arb.io.out.ready := io.outer.req_cmd.ready && choice_q.io.enq.ready
choice_q.io.enq.bits := cmd_arb.io.chosen
choice_q.io.enq.valid := cmd_arb.io.out.fire() && cmd_arb.io.out.bits.rw
io.outer.req_data.bits := io.inner(choice_q.io.deq.bits).req_data.bits
io.outer.req_data.valid := io.inner(choice_q.io.deq.bits).req_data.valid && choice_q.io.deq.valid
io.inner.map(_.req_data.ready).zipWithIndex.foreach {
case(r, i) => r := UInt(i) === choice_q.io.deq.bits && choice_q.io.deq.valid
}
choice_q.io.deq.ready := data_done
io.outer.resp.ready := Bool(false)
for (i <- 0 until arbN) {
io.inner(i).resp.valid := Bool(false)
when(io.outer.resp.bits.tag(log2Up(arbN)-1,0).toUInt === UInt(i)) {
io.inner(i).resp.valid := io.outer.resp.valid
io.outer.resp.ready := io.inner(i).resp.ready
}
io.inner(i).resp.bits := io.outer.resp.bits
io.inner(i).resp.bits.tag := io.outer.resp.bits.tag >> UInt(log2Up(arbN))
}
} else { io.inner.head <> io.outer }
}
object MemIOMemPipeIOConverter {
def apply(in: MemPipeIO): MemIO = {
val out = new MemIO().asDirectionless
in.resp.valid := out.resp.valid
in.resp.bits := out.resp.bits
out.resp.ready := Bool(true)
out.req_cmd.valid := in.req_cmd.valid
out.req_cmd.bits := in.req_cmd.bits
in.req_cmd.ready := out.req_cmd.ready
out.req_data.valid := in.req_data.valid
out.req_data.bits := in.req_data.bits
in.req_data.ready := out.req_data.ready
out
}
}
class MemPipeIOMemIOConverter(numRequests: Int) extends MIFModule {
val io = new Bundle {
val cpu = new MemIO().flip

View File

@ -488,7 +488,7 @@ class ProbeToDst extends Probe with HasClientId
/** Contains factories for [[uncore.Probe]] and [[uncore.ProbeToDst]]
*
* In general you should avoid using these factories directly and use
* [[uncore.ManagerMetadata.makeProbe(UInt,Acquire)*]] instead.
* [[uncore.ManagerMetadata.makeProbe(UInt,Acquire)* makeProbe]] instead.
*
* @param dst id of client to which probe should be sent
* @param p_type custom probe type