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Merge pull request #582 from ucb-bar/more-fuzzing

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Fuzzer enhancements
This commit is contained in:
Henry Cook 2017-03-13 15:31:51 -07:00 committed by GitHub
commit 4eb261c895
13 changed files with 71 additions and 34 deletions
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2
src/main/scala/uncore/ahb/Test.scala
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@ -25,7 +25,7 @@ class AHBFuzzBridge()(implicit p: Parameters) extends LazyModule
val gpio = LazyModule(new RRTest0(0x100))
model.node := fuzz.node
xbar.node := TLToAHB()(model.node)
xbar.node := TLToAHB()(TLDelayer(0.1)(model.node))
ram.node := xbar.node
gpio.node := xbar.node

2
src/main/scala/uncore/apb/Test.scala
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@ -25,7 +25,7 @@ class APBFuzzBridge()(implicit p: Parameters) extends LazyModule
val gpio = LazyModule(new RRTest0(0x100))
model.node := fuzz.node
xbar.node := TLToAPB()(model.node)
xbar.node := TLToAPB()(TLDelayer(0.1)(model.node))
ram.node := xbar.node
gpio.node := xbar.node

6
src/main/scala/uncore/axi4/Test.scala
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@ -25,7 +25,7 @@ class AXI4LiteFuzzRAM()(implicit p: Parameters) extends LazyModule
val ram = LazyModule(new AXI4RAM(AddressSet(0x0, 0x3ff)))
model.node := fuzz.node
xbar.node := model.node
xbar.node := TLDelayer(0.1)(model.node)
ram.node := AXI4Fragmenter(lite=true)(TLToAXI4(0, true )(xbar.node))
gpio.node := AXI4Fragmenter(lite=true)(TLToAXI4(0, false)(xbar.node))
@ -48,7 +48,7 @@ class AXI4FullFuzzRAM()(implicit p: Parameters) extends LazyModule
val ram = LazyModule(new AXI4RAM(AddressSet(0x0, 0x3ff)))
model.node := fuzz.node
xbar.node := model.node
xbar.node := TLDelayer(0.1)(model.node)
ram.node := AXI4Fragmenter(lite=false, maxInFlight = 2)(TLToAXI4(4,false)(xbar.node))
gpio.node := AXI4Fragmenter(lite=false, maxInFlight = 5)(TLToAXI4(4,true )(xbar.node))
@ -69,7 +69,7 @@ class AXI4FuzzMaster()(implicit p: Parameters) extends LazyModule
val model = LazyModule(new TLRAMModel("AXI4FuzzMaster"))
model.node := fuzz.node
node := TLToAXI4(4)(model.node)
node := TLToAXI4(4)(TLDelayer(0.1)(model.node))
lazy val module = new LazyModuleImp(this) {
val io = new Bundle {

2
src/main/scala/uncore/tilelink2/AsyncCrossing.scala
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@ -144,7 +144,7 @@ class TLRAMAsyncCrossing(implicit p: Parameters) extends LazyModule {
val cross = LazyModule(new TLAsyncCrossing)
model.node := fuzz.node
cross.node := TLFragmenter(4, 256)(model.node)
cross.node := TLFragmenter(4, 256)(TLDelayer(0.1)(model.node))
val monitor = (ram.node := cross.node)
lazy val module = new LazyModuleImp(this) with HasUnitTestIO {

2
src/main/scala/uncore/tilelink2/AtomicAutomata.scala
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@ -299,7 +299,7 @@ class TLRAMAtomicAutomata()(implicit p: Parameters) extends LazyModule {
val ram = LazyModule(new TLRAM(AddressSet(0x0, 0x3ff)))
model.node := fuzz.node
ram.node := TLFragmenter(4, 256)(TLAtomicAutomata()(model.node))
ram.node := TLFragmenter(4, 256)(TLDelayer(0.1)(TLAtomicAutomata()(TLDelayer(0.1)(model.node))))
lazy val module = new LazyModuleImp(this) with HasUnitTestIO {
io.finished := fuzz.module.io.finished

53
src/main/scala/uncore/tilelink2/Delayer.scala
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@ -19,19 +19,60 @@ class TLDelayer(q: Double)(implicit p: Parameters) extends LazyModule
val out = node.bundleOut
}
def feed[T <: Data](sink: DecoupledIO[T], source: DecoupledIO[T]) {
def feed[T <: Data](sink: DecoupledIO[T], source: DecoupledIO[T], noise: T) {
val allow = UInt((q * 65535.0).toInt) <= LFSR16(source.valid)
sink.valid := source.valid && allow
source.ready := sink.ready && allow
sink.bits := source.bits
when (!sink.valid) { sink.bits := noise }
}
(io.in zip io.out) foreach { case (in, out) =>
feed(out.a, in.a)
feed(out.c, in.c)
feed(out.e, in.e)
feed(in.b, out.b)
feed(in.d, out.d)
val anoise = Wire(in.a.bits)
anoise.opcode := LFSRNoiseMaker(3)
anoise.param := LFSRNoiseMaker(3)
anoise.size := LFSRNoiseMaker(anoise.params.sizeBits)
anoise.source := LFSRNoiseMaker(anoise.params.sourceBits)
anoise.address := LFSRNoiseMaker(anoise.params.addressBits)
anoise.mask := LFSRNoiseMaker(anoise.params.dataBits/8)
anoise.data := LFSRNoiseMaker(anoise.params.dataBits)
val bnoise = Wire(out.b.bits)
bnoise.opcode := LFSRNoiseMaker(3)
bnoise.param := LFSRNoiseMaker(3)
bnoise.size := LFSRNoiseMaker(bnoise.params.sizeBits)
bnoise.source := LFSRNoiseMaker(bnoise.params.sourceBits)
bnoise.address := LFSRNoiseMaker(bnoise.params.addressBits)
bnoise.mask := LFSRNoiseMaker(bnoise.params.dataBits/8)
bnoise.data := LFSRNoiseMaker(bnoise.params.dataBits)
val cnoise = Wire(in.c.bits)
cnoise.opcode := LFSRNoiseMaker(3)
cnoise.param := LFSRNoiseMaker(3)
cnoise.size := LFSRNoiseMaker(cnoise.params.sizeBits)
cnoise.source := LFSRNoiseMaker(cnoise.params.sourceBits)
cnoise.address := LFSRNoiseMaker(cnoise.params.addressBits)
cnoise.data := LFSRNoiseMaker(cnoise.params.dataBits)
cnoise.error := LFSRNoiseMaker(1)(0)
val dnoise = Wire(out.d.bits)
dnoise.opcode := LFSRNoiseMaker(3)
dnoise.param := LFSRNoiseMaker(3)
dnoise.size := LFSRNoiseMaker(dnoise.params.sizeBits)
dnoise.source := LFSRNoiseMaker(dnoise.params.sourceBits)
dnoise.sink := LFSRNoiseMaker(dnoise.params.sinkBits)
dnoise.addr_lo := LFSRNoiseMaker(dnoise.params.addrLoBits)
dnoise.data := LFSRNoiseMaker(dnoise.params.dataBits)
dnoise.error := LFSRNoiseMaker(1)(0)
val enoise = Wire(in.e.bits)
enoise.sink := LFSRNoiseMaker(enoise.params.sinkBits)
feed(out.a, in.a, anoise)
feed(out.c, in.c, cnoise)
feed(out.e, in.e, enoise)
feed(in.b, out.b, bnoise)
feed(in.d, out.d, dnoise)
}
}
}

2
src/main/scala/uncore/tilelink2/Fragmenter.scala
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@ -267,7 +267,7 @@ class TLRAMFragmenter(ramBeatBytes: Int, maxSize: Int)(implicit p: Parameters) e
val ram = LazyModule(new TLRAM(AddressSet(0x0, 0x3ff), beatBytes = ramBeatBytes))
model.node := fuzz.node
ram.node := TLFragmenter(ramBeatBytes, maxSize)(model.node)
ram.node := TLDelayer(0.1)(TLFragmenter(ramBeatBytes, maxSize)(TLDelayer(0.1)(model.node)))
lazy val module = new LazyModuleImp(this) with HasUnitTestIO {
io.finished := fuzz.module.io.finished

14
src/main/scala/uncore/tilelink2/Fuzzer.scala
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@ -34,18 +34,14 @@ class IDMapGenerator(numIds: Int) extends Module {
object LFSR64
{
private var counter = 0
private def next: Int = {
counter += 1
counter
}
def apply(increment: Bool = Bool(true), seed: Int = next): UInt =
def apply(increment: Bool = Bool(true)): UInt =
{
val wide = 64
val lfsr = RegInit(UInt((seed * 0xDEADBEEFCAFEBAB1L) >>> 1, width = wide))
val lfsr = Reg(UInt(width = wide)) // random initial value based on simulation seed
val xor = lfsr(0) ^ lfsr(1) ^ lfsr(3) ^ lfsr(4)
when (increment) { lfsr := Cat(xor, lfsr(wide-1,1)) }
when (increment) {
lfsr := Mux(lfsr === UInt(0), UInt(1), Cat(xor, lfsr(wide-1,1)))
}
lfsr
}
}

2
src/main/scala/uncore/tilelink2/HintHandler.scala
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@ -116,7 +116,7 @@ class TLRAMHintHandler()(implicit p: Parameters) extends LazyModule {
val ram = LazyModule(new TLRAM(AddressSet(0x0, 0x3ff)))
model.node := fuzz.node
ram.node := TLFragmenter(4, 256)(TLHintHandler()(model.node))
ram.node := TLFragmenter(4, 256)(TLDelayer(0.1)(TLHintHandler()(TLDelayer(0.1)(model.node))))
lazy val module = new LazyModuleImp(this) with HasUnitTestIO {
io.finished := fuzz.module.io.finished

4
src/main/scala/uncore/tilelink2/RegisterRouterTest.scala
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@ -259,7 +259,7 @@ class FuzzRRTest0()(implicit p: Parameters) extends LazyModule {
val fuzz = LazyModule(new TLFuzzer(5000))
val rrtr = LazyModule(new RRTest0(0x400))
rrtr.node := TLFragmenter(4, 32)(TLBuffer()(fuzz.node))
rrtr.node := TLFragmenter(4, 32)(TLDelayer(0.1)(fuzz.node))
lazy val module = new LazyModuleImp(this) with HasUnitTestIO {
io.finished := fuzz.module.io.finished
@ -274,7 +274,7 @@ class FuzzRRTest1()(implicit p: Parameters) extends LazyModule {
val fuzz = LazyModule(new TLFuzzer(5000))
val rrtr = LazyModule(new RRTest1(0x400))
rrtr.node := TLFragmenter(4, 32)(TLBuffer()(fuzz.node))
rrtr.node := TLFragmenter(4, 32)(TLDelayer(0.1)(fuzz.node))
lazy val module = new LazyModuleImp(this) with HasUnitTestIO {
io.finished := fuzz.module.io.finished

2
src/main/scala/uncore/tilelink2/SRAM.scala
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@ -95,7 +95,7 @@ class TLRAMSimple(ramBeatBytes: Int)(implicit p: Parameters) extends LazyModule
val ram = LazyModule(new TLRAM(AddressSet(0x0, 0x3ff), beatBytes = ramBeatBytes))
model.node := fuzz.node
ram.node := model.node
ram.node := TLDelayer(0.25)(model.node)
lazy val module = new LazyModuleImp(this) with HasUnitTestIO {
io.finished := fuzz.module.io.finished

6
src/main/scala/uncore/tilelink2/WidthWidget.scala
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@ -180,11 +180,11 @@ class TLRAMWidthWidget(first: Int, second: Int)(implicit p: Parameters) extends
val ram = LazyModule(new TLRAM(AddressSet(0x0, 0x3ff)))
model.node := fuzz.node
ram.node := TLFragmenter(4, 256)(
if (first == second ) { TLWidthWidget(first)(model.node) }
ram.node := TLDelayer(0.1)(TLFragmenter(4, 256)(
if (first == second ) { TLWidthWidget(first)(TLDelayer(0.1)(model.node)) }
else {
TLWidthWidget(second)(
TLWidthWidget(first)(model.node))})
TLWidthWidget(first)(TLDelayer(0.1)(model.node)))}))
lazy val module = new LazyModuleImp(this) with HasUnitTestIO {
io.finished := fuzz.module.io.finished

8
src/main/scala/uncore/tilelink2/Xbar.scala
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@ -191,10 +191,10 @@ class TLRAMXbar(nManagers: Int)(implicit p: Parameters) extends LazyModule {
val xbar = LazyModule(new TLXbar)
model.node := fuzz.node
xbar.node := model.node
xbar.node := TLDelayer(0.1)(model.node)
(0 until nManagers) foreach { n =>
val ram = LazyModule(new TLRAM(AddressSet(0x0+0x400*n, 0x3ff)))
ram.node := TLFragmenter(4, 256)(xbar.node)
ram.node := TLFragmenter(4, 256)(TLDelayer(0.1)(xbar.node))
}
lazy val module = new LazyModuleImp(this) with HasUnitTestIO {
@ -211,13 +211,13 @@ class TLMulticlientXbar(nManagers: Int, nClients: Int)(implicit p: Parameters) e
val fuzzers = (0 until nClients) map { n =>
val fuzz = LazyModule(new TLFuzzer(5000))
xbar.node := fuzz.node
xbar.node := TLDelayer(0.1)(fuzz.node)
fuzz
}
(0 until nManagers) foreach { n =>
val ram = LazyModule(new TLRAM(AddressSet(0x0+0x400*n, 0x3ff)))
ram.node := TLFragmenter(4, 256)(xbar.node)
ram.node := TLFragmenter(4, 256)(TLDelayer(0.1)(xbar.node))
}
lazy val module = new LazyModuleImp(this) with HasUnitTestIO {