public void StallControlPipelineModuleTest_IdleRun()
{
var t = Module <StallControlPipelineModule>();
Action <StallControlOutput> assert = (expected) => Assert.IsTrue(DeepDiff.DeepEquals(expected, t.outResult));
var idle = new StallControlInputs()
{
inProcessed = true, inReady = true
};
t.Cycle(idle);
assert(new StallControlOutput()
{
result = 0
});
t.Cycle(idle);
assert(new StallControlOutput()
{
result = 1
});
t.Cycle(idle);
assert(new StallControlOutput()
{
result = 2, ready = true
});
t.Cycle(idle);
assert(new StallControlOutput()
{
result = 3, ready = true
});
}
public void StallControlPipelineModuleTest_StallPrev()
{
var t = new RTLSimulator <StallControlPipelineModule, StallControlInputs>();
t.TraceToVCD(VCDOutputPath());
Action <StallControlOutput> assert = (expected) => Assert.IsTrue(DeepDiff.DeepEquals(expected, t.TopLevel.outResult));
t.ClockCycle(new StallControlInputs()
{
inProcessed = true, inData = 3, inReady = true
});
assert(new StallControlOutput());
t.ClockCycle(new StallControlInputs {
inProcessed = true
});
assert(new StallControlOutput()
{
result = 1, stage0Stalled = true
});
t.ClockCycle(new StallControlInputs {
inProcessed = true
});
assert(new StallControlOutput()
{
result = 5, stage0Stalled = true
});
t.ClockCycle(new StallControlInputs {
inProcessed = true
});
assert(new StallControlOutput()
{
result = 9, stage0Stalled = true
});
t.ClockCycle(new StallControlInputs {
inProcessed = true, inReady = true
});
assert(new StallControlOutput()
{
result = 13
});
t.ClockCycle(new StallControlInputs {
inProcessed = true, inReady = true
});
assert(new StallControlOutput()
{
result = 17, ready = true
});
t.ClockCycle(new StallControlInputs {
inProcessed = true
});
}
public virtual bool DeepEquals(object lhs, object rhs) => DeepDiff.DeepEquals(lhs, rhs);
public void StallControlTestPipelineModuleTest()
{
var sim = new RTLSimulator <StallControlTestPipelineModule, StallControlTestPipelineModuleInputs>();
sim.TraceToVCD(VCDOutputPath());
var dataLog = new IntegrationTestDataLogger();
// initial values
dataLog.setInputs(new StallControlTestPipelineModuleInputs());
Action <StallControlTestPipelineModuleInputs> clockCycle = (inputs) =>
{
dataLog.currentClock++;
dataLog.setInputs(inputs);
sim.ClockCycle(inputs);
};
Action <byte[]> assertStateCounters = (values) =>
{
var pl = sim.TopLevel.PipelineProps.Single().GetValue(sim.TopLevel) as IRTLPipeline;
var head = pl.Diag.Head;
var s0 = head.Peek <StallControlTestPipelineStage0>();
var s1 = head.Peek <StallControlTestPipelineStage1>();
var s2 = head.Peek <StallControlTestPipelineStage2>();
var s3 = head.Peek <StallControlTestPipelineStage3>();
Assert.AreEqual(values[0], s0.State.stage0Counter);
Assert.AreEqual(values[1], s1.State.stage1Counter);
Assert.AreEqual(values[2], s2.State.stage2Counter);
Assert.AreEqual(values[3], s3.State.stage3Counter);
};
Action <StallControlTestOutput> assert = (expected) =>
{
var compare = DeepDiff.DeepCompare(expected, sim.TopLevel.outResult);
if (compare != null)
{
Assert.Fail($"{string.Join(".", compare.Path.Select(p => p.Name))}: Expecting {compare.lhs}, Actual {compare.rhs}. {compare.Messages.ToCSV()}");
}
dataLog.SetOutputs(expected);
};
var idle = new StallControlTestPipelineModuleInputs();
clockCycle(idle);
assert(new StallControlTestOutput()
{
stage3Counter = 1
});
clockCycle(idle);
assert(new StallControlTestOutput()
{
stage2Counter = 1, stage3Counter = 2
});
clockCycle(idle);
assert(new StallControlTestOutput()
{
stage1Counter = 1, stage2Counter = 2, stage3Counter = 3
});
clockCycle(idle);
assert(new StallControlTestOutput()
{
stage0Counter = 1, stage1Counter = 2, stage2Counter = 3, stage3Counter = 4
});
// all counters should be at 4
assertStateCounters(new byte[] { 4, 4, 4, 4 });
#region stage3 stall control
// stall stage3
clockCycle(new StallControlTestPipelineModuleInputs()
{
stallStage3 = true
});
assertStateCounters(new byte[] { 4, 4, 4, 4 });
assert(new StallControlTestOutput()
{
stage0Counter = 1,
stage1Counter = 2,
stage2Counter = 3,
stage3Counter = 4,
pipelineStalled = true,
stage0Stalled = true,
stage1Stalled = true,
stage2Stalled = true,
stage3Stalled = true
});
// stall pipeline from stage 3
clockCycle(new StallControlTestPipelineModuleInputs()
{
stallPipeline = true, stallStage3 = true
});
assertStateCounters(new byte[] { 4, 4, 4, 4 });
assert(new StallControlTestOutput()
{
stage0Counter = 1,
stage1Counter = 2,
stage2Counter = 3,
stage3Counter = 4,
pipelineStalled = true,
stage0Stalled = true,
stage1Stalled = true,
stage2Stalled = true,
stage3Stalled = true
});
// stall stage2 from stage 3
clockCycle(new StallControlTestPipelineModuleInputs()
{
stallPrev = true, stallStage3 = true
});
assertStateCounters(new byte[] { 4, 4, 4, 5 });
assert(new StallControlTestOutput()
{
stage0Counter = 2,
stage1Counter = 3,
stage2Counter = 4,
stage3Counter = 5,
pipelineStalled = false,
stage0Stalled = true,
stage1Stalled = true,
stage2Stalled = true,
stage3Stalled = false
});
// stall stage 2 from stage 3 again
clockCycle(new StallControlTestPipelineModuleInputs()
{
stallPrev = true, stallStage3 = true
});
assertStateCounters(new byte[] { 4, 4, 4, 6 });
assert(new StallControlTestOutput()
{
stage0Counter = 2,
stage1Counter = 3,
stage2Counter = 4,
stage3Counter = 6,
pipelineStalled = false,
stage0Stalled = true,
stage1Stalled = true,
stage2Stalled = true,
stage3Stalled = false
});
#endregion
#region stage2 stall control
// stall stage2
clockCycle(new StallControlTestPipelineModuleInputs()
{
stallStage2 = true
});
assertStateCounters(new byte[] { 4, 4, 4, 7 });
assert(new StallControlTestOutput()
{
stage0Counter = 2,
stage1Counter = 3,
stage2Counter = 4,
stage3Counter = 7,
pipelineStalled = false,
stage0Stalled = true,
stage1Stalled = true,
stage2Stalled = true,
stage3Stalled = false
});
// stall pipeline from stage 2
clockCycle(new StallControlTestPipelineModuleInputs()
{
stallPipeline = true, stallStage2 = true
});
assertStateCounters(new byte[] { 4, 4, 4, 7 });
assert(new StallControlTestOutput()
{
stage0Counter = 2,
stage1Counter = 3,
stage2Counter = 4,
stage3Counter = 7,
pipelineStalled = true,
stage0Stalled = true,
stage1Stalled = true,
stage2Stalled = true,
stage3Stalled = true
});
// stall stage1 from stage 2
clockCycle(new StallControlTestPipelineModuleInputs()
{
stallPrev = true, stallStage2 = true
});
assertStateCounters(new byte[] { 4, 4, 5, 8 });
assert(new StallControlTestOutput()
{
stage0Counter = 2,
stage1Counter = 3,
stage2Counter = 4,
stage3Counter = 8,
pipelineStalled = false,
stage0Stalled = true,
stage1Stalled = true,
stage2Stalled = false,
stage3Stalled = false
});
// stall stage1 from stage 2 again
clockCycle(new StallControlTestPipelineModuleInputs()
{
stallPrev = true, stallStage2 = true
});
assertStateCounters(new byte[] { 4, 4, 6, 9 });
assert(new StallControlTestOutput()
{
stage0Counter = 3,
stage1Counter = 4,
stage2Counter = 5,
stage3Counter = 9,
pipelineStalled = false,
stage0Stalled = true,
stage1Stalled = true,
stage2Stalled = false,
stage3Stalled = false
});
// stall stage1 from stage 2 one more time
clockCycle(new StallControlTestPipelineModuleInputs()
{
stallPrev = true, stallStage2 = true
});
assertStateCounters(new byte[] { 4, 4, 7, 10 });
assert(new StallControlTestOutput()
{
stage0Counter = 3,
stage1Counter = 4,
stage2Counter = 6,
stage3Counter = 10,
pipelineStalled = false,
stage0Stalled = true,
stage1Stalled = true,
stage2Stalled = false,
stage3Stalled = false
});
#endregion stage2 stall control
#region stage1 stall control
clockCycle(new StallControlTestPipelineModuleInputs()
{
stallStage1 = true
});
assertStateCounters(new byte[] { 4, 4, 8, 11 });
assert(new StallControlTestOutput()
{
stage0Counter = 3,
stage1Counter = 4,
stage2Counter = 7,
stage3Counter = 11,
pipelineStalled = false,
stage0Stalled = true,
stage1Stalled = true,
stage2Stalled = false,
stage3Stalled = false
});
clockCycle(new StallControlTestPipelineModuleInputs()
{
stallPipeline = true, stallStage1 = true
});
assertStateCounters(new byte[] { 4, 4, 8, 11 });
assert(new StallControlTestOutput()
{
stage0Counter = 3,
stage1Counter = 4,
stage2Counter = 7,
stage3Counter = 11,
pipelineStalled = true,
stage0Stalled = true,
stage1Stalled = true,
stage2Stalled = true,
stage3Stalled = true
});
clockCycle(new StallControlTestPipelineModuleInputs()
{
stallPrev = true, stallStage1 = true
});
assertStateCounters(new byte[] { 4, 5, 9, 12 });
assert(new StallControlTestOutput()
{
stage0Counter = 3,
stage1Counter = 4,
stage2Counter = 8,
stage3Counter = 12,
pipelineStalled = false,
stage0Stalled = true,
stage1Stalled = false,
stage2Stalled = false,
stage3Stalled = false
});
clockCycle(new StallControlTestPipelineModuleInputs()
{
stallPrev = true, stallStage1 = true
});
assertStateCounters(new byte[] { 4, 6, 10, 13 });
assert(new StallControlTestOutput()
{
stage0Counter = 3,
stage1Counter = 4,
stage2Counter = 9,
stage3Counter = 13,
pipelineStalled = false,
stage0Stalled = true,
stage1Stalled = false,
stage2Stalled = false,
stage3Stalled = false
});
clockCycle(new StallControlTestPipelineModuleInputs()
{
stallPrev = true, stallStage1 = true
});
assertStateCounters(new byte[] { 4, 7, 11, 14 });
assert(new StallControlTestOutput()
{
stage0Counter = 4,
stage1Counter = 5,
stage2Counter = 10,
stage3Counter = 14,
pipelineStalled = false,
stage0Stalled = true,
stage1Stalled = false,
stage2Stalled = false,
stage3Stalled = false
});
#endregion stage1 stall control
#region stage2 stall control
clockCycle(new StallControlTestPipelineModuleInputs()
{
stallStage0 = true
});
assertStateCounters(new byte[] { 4, 8, 12, 15 });
assert(new StallControlTestOutput()
{
stage0Counter = 4,
stage1Counter = 6,
stage2Counter = 11,
stage3Counter = 15,
pipelineStalled = false,
stage0Stalled = true,
stage1Stalled = false,
stage2Stalled = false,
stage3Stalled = false
});
clockCycle(new StallControlTestPipelineModuleInputs()
{
stallPipeline = true, stallStage0 = true
});
assertStateCounters(new byte[] { 4, 8, 12, 15 });
assert(new StallControlTestOutput()
{
stage0Counter = 4,
stage1Counter = 6,
stage2Counter = 11,
stage3Counter = 15,
pipelineStalled = true,
stage0Stalled = true,
stage1Stalled = true,
stage2Stalled = true,
stage3Stalled = true
});
clockCycle(new StallControlTestPipelineModuleInputs()
{
stallPrev = true, stallStage0 = true
});
assertStateCounters(new byte[] { 5, 9, 13, 16 });
assert(new StallControlTestOutput()
{
stage0Counter = 4,
stage1Counter = 7,
stage2Counter = 12,
stage3Counter = 16,
pipelineStalled = false,
stage0Stalled = false,
stage1Stalled = false,
stage2Stalled = false,
stage3Stalled = false
});
clockCycle(new StallControlTestPipelineModuleInputs()
{
stallPrev = true, stallStage0 = true
});
assertStateCounters(new byte[] { 6, 10, 14, 17 });
assert(new StallControlTestOutput()
{
stage0Counter = 4,
stage1Counter = 8,
stage2Counter = 13,
stage3Counter = 17,
pipelineStalled = false,
stage0Stalled = false,
stage1Stalled = false,
stage2Stalled = false,
stage3Stalled = false
});
clockCycle(new StallControlTestPipelineModuleInputs()
{
stallPrev = true, stallStage0 = true
});
assertStateCounters(new byte[] { 7, 11, 15, 18 });
assert(new StallControlTestOutput()
{
stage0Counter = 4,
stage1Counter = 9,
stage2Counter = 14,
stage3Counter = 18,
pipelineStalled = false,
stage0Stalled = false,
stage1Stalled = false,
stage2Stalled = false,
stage3Stalled = false
});
clockCycle(new StallControlTestPipelineModuleInputs()
{
stallPrev = true, stallStage0 = true
});
assertStateCounters(new byte[] { 8, 12, 16, 19 });
assert(new StallControlTestOutput()
{
stage0Counter = 5,
stage1Counter = 10,
stage2Counter = 15,
stage3Counter = 19,
pipelineStalled = false,
stage0Stalled = false,
stage1Stalled = false,
stage2Stalled = false,
stage3Stalled = false
});
#endregion stage2 stall control
// filler in VCD
clockCycle(new StallControlTestPipelineModuleInputs()
{
stallPipeline = true, stallStage3 = true
});
clockCycle(new StallControlTestPipelineModuleInputs()
{
stallPipeline = true, stallStage3 = true
});
clockCycle(new StallControlTestPipelineModuleInputs()
{
stallPipeline = true, stallStage3 = true
});
dataLog.Generate();
}
