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test/axi: add crossbar stress tests

This commit is contained in:
Jędrzej Boczar 2020-07-22 16:31:51 +02:00
parent 706bc25dc1
commit 8ae501c391
1 changed files with 40 additions and 23 deletions
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63
test/test_axi.py
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@ -972,9 +972,10 @@ class TestAXILiteInterconnect(unittest.TestCase):
("r", 0x300, 1), ("r", 0x300, 1),
]) ])
def interconnect_shared_test(self, master_patterns, slave_decoders, def interconnect_test(self, master_patterns, slave_decoders,
master_delay=0, slave_ready_latency=0, slave_response_latency=0, master_delay=0, slave_ready_latency=0, slave_response_latency=0,
disconnected_slaves=None, timeout=300, **kwargs): disconnected_slaves=None, timeout=300, interconnect=AXILiteInterconnectShared,
**kwargs):
# number of masters/slaves is defined by the number of patterns/decoders # number of masters/slaves is defined by the number of patterns/decoders
# master_patterns: list of patterns per master, pattern = list(tuple(rw, addr, data)) # master_patterns: list of patterns per master, pattern = list(tuple(rw, addr, data))
# slave_decoders: list of address decoders per slave # slave_decoders: list of address decoders per slave
@ -985,7 +986,7 @@ class TestAXILiteInterconnect(unittest.TestCase):
self.masters = [AXILiteInterface(name="master") for _ in range(n_masters)] self.masters = [AXILiteInterface(name="master") for _ in range(n_masters)]
self.slaves = [AXILiteInterface(name="slave") for _ in range(len(decoders))] self.slaves = [AXILiteInterface(name="slave") for _ in range(len(decoders))]
slaves = list(zip(decoders, self.slaves)) slaves = list(zip(decoders, self.slaves))
self.submodules.interconnect = AXILiteInterconnectShared(self.masters, slaves, **kwargs) self.submodules.interconnect = interconnect(self.masters, slaves, **kwargs)
class ReadDataGenerator: class ReadDataGenerator:
# Generates data based on decoded addresses and data defined in master_patterns # Generates data based on decoded addresses and data defined in master_patterns
@ -1031,8 +1032,8 @@ class TestAXILiteInterconnect(unittest.TestCase):
] ]
slave_decoders = [self.address_decoder(i) for i in range(3)] slave_decoders = [self.address_decoder(i) for i in range(3)]
generators, checkers = self.interconnect_shared_test(master_patterns, slave_decoders, generators, checkers = self.interconnect_test(master_patterns, slave_decoders,
master_delay=1) master_delay=1)
for gen in generators: for gen in generators:
self.assertEqual(gen.errors, 0) self.assertEqual(gen.errors, 0)
@ -1047,7 +1048,7 @@ class TestAXILiteInterconnect(unittest.TestCase):
self.assertEqual(addr(checkers[1].reads), []) self.assertEqual(addr(checkers[1].reads), [])
self.assertEqual(addr(checkers[2].reads), []) self.assertEqual(addr(checkers[2].reads), [])
def interconnect_shared_stress_test(self, timeout=1000, **kwargs): def interconnect_stress_test(self, timeout=1000, **kwargs):
prng = random.Random(42) prng = random.Random(42)
n_masters = 3 n_masters = 3
@ -1072,8 +1073,8 @@ class TestAXILiteInterconnect(unittest.TestCase):
slave_decoders_py = [self.address_decoder(i, size=slave_region_size, python=True) slave_decoders_py = [self.address_decoder(i, size=slave_region_size, python=True)
for i in range(n_slaves)] for i in range(n_slaves)]
generators, checkers = self.interconnect_shared_test(master_patterns, slave_decoders, generators, checkers = self.interconnect_test(master_patterns, slave_decoders,
timeout=timeout, **kwargs) timeout=timeout, **kwargs)
for gen in generators: for gen in generators:
read_errors = [" 0x{:08x} vs 0x{:08x}".format(v, ref) for v, ref in gen.read_errors] read_errors = [" 0x{:08x} vs 0x{:08x}".format(v, ref) for v, ref in gen.read_errors]
@ -1091,28 +1092,44 @@ class TestAXILiteInterconnect(unittest.TestCase):
self.assertNotEqual(decoder(addr >> 2), 0) self.assertNotEqual(decoder(addr >> 2), 0)
def test_interconnect_shared_stress_no_delay(self): def test_interconnect_shared_stress_no_delay(self):
self.interconnect_shared_stress_test(timeout=1000, self.interconnect_stress_test(timeout=1000,
master_delay=0, master_delay=0,
slave_ready_latency=0, slave_ready_latency=0,
slave_response_latency=0) slave_response_latency=0)
def test_interconnect_shared_stress_rand_short(self): def test_interconnect_shared_stress_rand_short(self):
prng = random.Random(42) prng = random.Random(42)
rand = lambda: prng.randrange(4) rand = lambda: prng.randrange(4)
self.interconnect_shared_stress_test(timeout=2000, self.interconnect_stress_test(timeout=2000,
master_delay=rand, master_delay=rand,
slave_ready_latency=rand, slave_ready_latency=rand,
slave_response_latency=rand) slave_response_latency=rand)
def test_interconnect_shared_stress_rand_long(self): def test_interconnect_shared_stress_rand_long(self):
prng = random.Random(42) prng = random.Random(42)
rand = lambda: prng.randrange(16) rand = lambda: prng.randrange(16)
self.interconnect_shared_stress_test(timeout=4000, self.interconnect_stress_test(timeout=4000,
master_delay=rand, master_delay=rand,
slave_ready_latency=rand, slave_ready_latency=rand,
slave_response_latency=rand) slave_response_latency=rand)
def test_interconnect_shared_stress_timeout(self): def test_interconnect_shared_stress_timeout(self):
self.interconnect_shared_stress_test(timeout=4000, self.interconnect_stress_test(timeout=4000,
disconnected_slaves=[1], disconnected_slaves=[1],
timeout_cycles=50) timeout_cycles=50)
def test_crossbar_stress_no_delay(self):
self.interconnect_stress_test(timeout=1000,
master_delay=0,
slave_ready_latency=0,
slave_response_latency=0,
interconnect=AXILiteCrossbar)
def test_crossbar_stress_rand(self):
prng = random.Random(42)
rand = lambda: prng.randrange(4)
self.interconnect_stress_test(timeout=2000,
master_delay=rand,
slave_ready_latency=rand,
slave_response_latency=rand,
interconnect=AXILiteCrossbar)