riscv/rocket-chip
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Clean up TileLinkRecursiveInterconnect a bit

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This commit is contained in:
Andrew Waterman 2016-04-27 14:53:11 -07:00
parent 87cecc336f
commit 81ff127dc3
1 changed files with 15 additions and 23 deletions
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38
uncore/src/main/scala/interconnect.scala
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@ -257,27 +257,25 @@ abstract class TileLinkInterconnect(implicit p: Parameters) extends TLModule()(p
}
class TileLinkRecursiveInterconnect(
val nInner: Int, val nOuter: Int,
addrmap: AddrMap, base: BigInt)
val nInner: Int, addrmap: AddrMap, base: BigInt)
(implicit p: Parameters) extends TileLinkInterconnect()(p) {
var lastEnd = base
var outInd = 0
val levelSize = addrmap.size
val realAddrMap = new ArraySeq[(BigInt, BigInt)](addrmap.size)
val nOuter = addrmap.countSlaves
addrmap.zipWithIndex.foreach { case (AddrMapEntry(name, startOpt, region), i) =>
val start = startOpt.getOrElse(lastEnd)
val realAddrMap = addrmap map { case AddrMapEntry(name, region) =>
val start = lastEnd
val size = region.size
require(bigIntPow2(size),
require(isPow2(size),
s"Region $name size $size is not a power of 2")
require(start % size == 0,
f"Region $name start address 0x$start%x not divisible by 0x$size%x" )
require(start >= lastEnd,
f"Region $name start address 0x$start%x before previous region end")
realAddrMap(i) = (start, size)
lastEnd = start + size
(start, size)
}
val routeSel = (addr: UInt) => {
@ -289,25 +287,19 @@ class TileLinkRecursiveInterconnect(
val xbar = Module(new ClientUncachedTileLinkIOCrossbar(nInner, levelSize, routeSel))
xbar.io.in <> io.in
addrmap.zip(realAddrMap).zip(xbar.io.out).zipWithIndex.foreach {
io.out <> addrmap.zip(realAddrMap).zip(xbar.io.out).zipWithIndex.flatMap {
case (((entry, (start, size)), xbarOut), i) => {
entry.region match {
case MemSize(_, _, _) =>
io.out(outInd) <> xbarOut
outInd += 1
Some(xbarOut)
case MemSubmap(_, submap) if submap.isEmpty =>
xbarOut.acquire.ready := Bool(false)
xbarOut.grant.valid := Bool(false)
None
case MemSubmap(_, submap) =>
if (submap.isEmpty) {
xbarOut.acquire.ready := Bool(false)
xbarOut.grant.valid := Bool(false)
} else {
val subSlaves = submap.countSlaves
val outputs = io.out.drop(outInd).take(subSlaves)
val ic = Module(new TileLinkRecursiveInterconnect(1, subSlaves, submap, start))
ic.io.in.head <> xbarOut
for ((o, s) <- outputs zip ic.io.out)
o <> s
outInd += subSlaves
}
val ic = Module(new TileLinkRecursiveInterconnect(1, submap, start))
ic.io.in.head <> xbarOut
ic.io.out
}
}
}