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Implement proper stalls for dpu

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This commit is contained in:
Hansung Kim
2024-05-29 16:21:12 -07:00
parent ae573aeea1
commit 17886dc050
2 changed files with 63 additions and 14 deletions
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20
src/test/scala/radiance/TensorDPUTest.scala
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@@ -48,7 +48,7 @@ class TensorDotProductUnitTest extends AnyFlatSpec with ChiselScalatestTester {
it should "pass" in {
test(new TensorDotProductUnit)
.withAnnotations(Seq(VerilatorBackendAnnotation))
// .withAnnotations(Seq(VerilatorBackendAnnotation))
// .withAnnotations(Seq(WriteVcdAnnotation))
{ c =>
c.io.in.valid.poke(true.B)
@@ -69,14 +69,20 @@ class TensorDotProductUnitTest extends AnyFlatSpec with ChiselScalatestTester {
c.clock.step()
c.io.in.valid.poke(false.B)
c.io.out.valid.expect(false.B)
// stall the pipeline
// c.io.stall.poke(true.B)
c.io.stall.poke(true.B)
c.clock.step()
// c.io.stall.poke(false.B)
// c.io.out.valid.expect(false.B)
// c.clock.step()
// c.clock.step()
// 4-cycle latency
c.io.stall.poke(true.B)
c.clock.step()
c.io.stall.poke(true.B)
c.clock.step()
c.io.stall.poke(false.B)
c.clock.step()
c.clock.step()
c.clock.step()
// 4-cycle latency + stalls
c.io.out.valid.expect(true.B)
c.io.out.bits.data.expect(0x42da0000L.U)