riscv/rocket-chip
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hookup all memory ports

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This commit is contained in:
Yunsup Lee
2013-11-05 17:12:09 -08:00
parent eae571e371
commit 4c56323f6f
2 changed files with 17 additions and 8 deletions
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4
rocket/src/main/scala/rocc.scala
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@@ -38,6 +38,10 @@ class RoCCInterface(implicit conf: RocketConfiguration) extends Bundle
val cmd = Decoupled(new RoCCCommand).flip
val resp = Decoupled(new RoCCResponse)
val mem = new HellaCacheIO()(conf.dcache)
val imem = new UncachedTileLinkIO()(conf.tl)
val iptw = new TLBPTWIO
val dptw = new TLBPTWIO
val pptw = new TLBPTWIO
val busy = Bool(OUTPUT)
val interrupt = Bool(OUTPUT)

21
rocket/src/main/scala/tile.scala
View File

@@ -21,9 +21,10 @@ case class RocketConfiguration(tl: TileLinkConfiguration,
class Tile(resetSignal: Bool = null)(confIn: RocketConfiguration) extends Module(_reset = resetSignal) with ClientCoherenceAgent
{
val memPorts = 2 // Number of ports to outer memory system from tile: 1 from I$, 1 from D$
val memPorts = 2 + !confIn.rocc.isEmpty // Number of ports to outer memory system from tile: 1 from I$, 1 from D$, maybe 1 from Rocc
val dcachePortId = 0
val icachePortId = 1
val roccPortId = 2
val dcachePorts = 2 + !confIn.rocc.isEmpty // Number of ports into D$: 1 from core, 1 from PTW, maybe 1 from RoCC
implicit val tlConf = confIn.tl
implicit val lnConf = confIn.tl.ln
@@ -39,7 +40,7 @@ class Tile(resetSignal: Bool = null)(confIn: RocketConfiguration) extends Module
val core = Module(new Core)
val icache = Module(new Frontend)
val dcache = Module(new HellaCache)
val ptw = Module(new PTW(2)) // 2 ports, 1 from I$, 1 from D$
val ptw = Module(new PTW(if (confIn.rocc.isEmpty) 2 else 5)) // 2 ports, 1 from I$, 1 from D$, maybe 3 from RoCC
val dcacheArb = Module(new HellaCacheArbiter(dcachePorts))
dcacheArb.io.requestor(0) <> ptw.io.mem
@@ -49,12 +50,6 @@ class Tile(resetSignal: Bool = null)(confIn: RocketConfiguration) extends Module
ptw.io.requestor(0) <> icache.io.cpu.ptw
ptw.io.requestor(1) <> dcache.io.cpu.ptw
if (!conf.rocc.isEmpty) {
val rocc = Module((conf.rocc.get)(conf))
core.io.rocc <> rocc.io
dcacheArb.io.requestor(2) <> rocc.io.mem
}
core.io.host <> io.host
core.io.imem <> icache.io.cpu
core.io.ptw <> ptw.io.dpath
@@ -63,6 +58,16 @@ class Tile(resetSignal: Bool = null)(confIn: RocketConfiguration) extends Module
memArb.io.in(dcachePortId) <> dcache.io.mem
memArb.io.in(icachePortId) <> icache.io.mem
if (!conf.rocc.isEmpty) {
val rocc = Module((conf.rocc.get)(conf))
core.io.rocc <> rocc.io
dcacheArb.io.requestor(2) <> rocc.io.mem
memArb.io.in(roccPortId) <> rocc.io.imem
ptw.io.requestor(2) <> rocc.io.iptw
ptw.io.requestor(3) <> rocc.io.dptw
ptw.io.requestor(4) <> rocc.io.pptw
}
io.tilelink.acquire <> memArb.io.out.acquire
memArb.io.out.grant <> io.tilelink.grant
io.tilelink.grant_ack <> memArb.io.out.grant_ack