move ReorderQueue and DecoupledHelper in from uncore
This commit is contained in:
parent
6a0352c6d0
commit
19c526de59
@ -143,3 +143,65 @@ class JunctionsCountingArbiter[T <: Data](
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
class ReorderQueueWrite[T <: Data](dType: T, tagWidth: Int) extends Bundle {
|
||||
val data = dType.cloneType
|
||||
val tag = UInt(width = tagWidth)
|
||||
|
||||
override def cloneType =
|
||||
new ReorderQueueWrite(dType, tagWidth).asInstanceOf[this.type]
|
||||
}
|
||||
|
||||
class ReorderEnqueueIO[T <: Data](dType: T, tagWidth: Int)
|
||||
extends DecoupledIO(new ReorderQueueWrite(dType, tagWidth))
|
||||
|
||||
class ReorderDequeueIO[T <: Data](dType: T, tagWidth: Int) extends Bundle {
|
||||
val valid = Bool(INPUT)
|
||||
val tag = UInt(INPUT, tagWidth)
|
||||
val data = dType.cloneType.asOutput
|
||||
val matches = Bool(OUTPUT)
|
||||
|
||||
override def cloneType =
|
||||
new ReorderDequeueIO(dType, tagWidth).asInstanceOf[this.type]
|
||||
}
|
||||
|
||||
class ReorderQueue[T <: Data](dType: T, tagWidth: Int, size: Int)
|
||||
extends Module {
|
||||
val io = new Bundle {
|
||||
val enq = new ReorderEnqueueIO(dType, tagWidth).flip
|
||||
val deq = new ReorderDequeueIO(dType, tagWidth)
|
||||
}
|
||||
|
||||
val roq_data = Reg(Vec(size, dType.cloneType))
|
||||
val roq_tags = Reg(Vec(size, UInt(width = tagWidth)))
|
||||
val roq_free = Reg(init = Vec.fill(size)(Bool(true)))
|
||||
|
||||
val roq_enq_addr = PriorityEncoder(roq_free)
|
||||
val roq_matches = roq_tags.zip(roq_free)
|
||||
.map { case (tag, free) => tag === io.deq.tag && !free }
|
||||
val roq_deq_addr = PriorityEncoder(roq_matches)
|
||||
|
||||
io.enq.ready := roq_free.reduce(_ || _)
|
||||
io.deq.data := roq_data(roq_deq_addr)
|
||||
io.deq.matches := roq_matches.reduce(_ || _)
|
||||
|
||||
when (io.enq.valid && io.enq.ready) {
|
||||
roq_data(roq_enq_addr) := io.enq.bits.data
|
||||
roq_tags(roq_enq_addr) := io.enq.bits.tag
|
||||
roq_free(roq_enq_addr) := Bool(false)
|
||||
}
|
||||
|
||||
when (io.deq.valid) {
|
||||
roq_free(roq_deq_addr) := Bool(true)
|
||||
}
|
||||
}
|
||||
|
||||
object DecoupledHelper {
|
||||
def apply(rvs: Bool*) = new DecoupledHelper(rvs)
|
||||
}
|
||||
|
||||
class DecoupledHelper(val rvs: Seq[Bool]) {
|
||||
def fire(exclude: Bool, includes: Bool*) = {
|
||||
(rvs.filter(_ ne exclude) ++ includes).reduce(_ && _)
|
||||
}
|
||||
}
|
||||
|
Loading…
Reference in New Issue
Block a user