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Add clock enable to XGMII test

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This commit is contained in:
Alex Forencich
2020-11-17 21:30:06 -08:00
parent 51218e3869
commit 404fdd6d28
2 changed files with 43 additions and 9 deletions
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47
tests/xgmii/test_xgmii.py
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@@ -45,10 +45,15 @@ class TB(object):
self.log = SimLog(f"cocotb.tb")
self.log.setLevel(logging.DEBUG)
self._enable_generator = None
self._enable_cr = None
cocotb.fork(Clock(dut.clk, 2, units="ns").start())
self.source = XgmiiSource(dut, "xgmii", dut.clk, dut.rst)
self.sink = XgmiiSink(dut, "xgmii", dut.clk, dut.rst)
self.source = XgmiiSource(dut, "xgmii", dut.clk, dut.rst, dut.xgmii_clk_en)
self.sink = XgmiiSink(dut, "xgmii", dut.clk, dut.rst, dut.xgmii_clk_en)
dut.xgmii_clk_en.setimmediatevalue(1)
async def reset(self):
self.dut.rst.setimmediatevalue(0)
@@ -61,7 +66,25 @@ class TB(object):
await RisingEdge(self.dut.clk)
await RisingEdge(self.dut.clk)
async def run_test(dut, payload_lengths=None, payload_data=None, ifg=12, enable_dic=True, force_offset_start=False):
def set_enable_generator(self, generator=None):
if self._enable_cr is not None:
self._enable_cr.kill()
self._enable_cr = None
self._enable_generator = generator
if self._enable_generator is not None:
self._enable_cr = cocotb.fork(self._run_enable())
def clear_enable_generator(self):
self.set_enable_generator(None)
async def _run_enable(self):
for val in self._enable_generator:
self.dut.xgmii_clk_en <= val
await RisingEdge(self.dut.clk)
async def run_test(dut, payload_lengths=None, payload_data=None, ifg=12, enable_dic=True, force_offset_start=False, enable_gen=None):
tb = TB(dut)
@@ -71,6 +94,9 @@ async def run_test(dut, payload_lengths=None, payload_data=None, ifg=12, enable_
tb.source.enable_dic = enable_dic
tb.source.force_offset_start = force_offset_start
if enable_gen is not None:
tb.set_enable_generator(enable_gen())
await tb.reset()
test_frames = [payload_data(l) for l in payload_lengths()]
@@ -91,7 +117,7 @@ async def run_test(dut, payload_lengths=None, payload_data=None, ifg=12, enable_
await RisingEdge(dut.clk)
await RisingEdge(dut.clk)
async def run_test_alignment(dut, payload_data=None, ifg=12, enable_dic=True, force_offset_start=False):
async def run_test_alignment(dut, payload_data=None, ifg=12, enable_dic=True, force_offset_start=False, enable_gen=False):
tb = TB(dut)
@@ -101,10 +127,13 @@ async def run_test_alignment(dut, payload_data=None, ifg=12, enable_dic=True, fo
tb.source.enable_dic = enable_dic
tb.source.force_offset_start = force_offset_start
await tb.reset()
if enable_gen is not None:
tb.set_enable_generator(enable_gen())
for length in range(64, 96):
await tb.reset()
test_frames = [payload_data(length) for k in range(10)]
start_lane = []
@@ -155,8 +184,7 @@ async def run_test_alignment(dut, payload_data=None, ifg=12, enable_dic=True, fo
assert start_lane_ref == start_lane
for k in range(10):
await RisingEdge(dut.clk)
await RisingEdge(dut.clk)
assert tb.sink.empty()
@@ -169,6 +197,9 @@ def size_list():
def incrementing_payload(length):
return bytearray(itertools.islice(itertools.cycle(range(256)), length))
def cycle_en():
return itertools.cycle([0, 0, 0, 1])
if cocotb.SIM_NAME:
factory = TestFactory(run_test)
@@ -177,6 +208,7 @@ if cocotb.SIM_NAME:
factory.add_option("ifg", [12, 0])
factory.add_option("enable_dic", [True, False])
factory.add_option("force_offset_start", [False, True])
factory.add_option("enable_gen", [None, cycle_en])
factory.generate_tests()
factory = TestFactory(run_test_alignment)
@@ -184,6 +216,7 @@ if cocotb.SIM_NAME:
factory.add_option("ifg", [12, 0])
factory.add_option("enable_dic", [True, False])
factory.add_option("force_offset_start", [False, True])
factory.add_option("enable_gen", [None, cycle_en])
factory.generate_tests()