mirror of
https://github.com/fpganinja/taxi.git
synced 2025-12-09 17:08:38 -08:00
124 lines
3.1 KiB
Python
124 lines
3.1 KiB
Python
#!/usr/bin/env python
|
|
# SPDX-License-Identifier: CERN-OHL-S-2.0
|
|
"""
|
|
|
|
Copyright (c) 2020-2025 FPGA Ninja, LLC
|
|
|
|
Authors:
|
|
- Alex Forencich
|
|
|
|
"""
|
|
|
|
import logging
|
|
import os
|
|
|
|
import cocotb_test.simulator
|
|
import pytest
|
|
|
|
import cocotb
|
|
from cocotb.triggers import Timer
|
|
|
|
|
|
@cocotb.test()
|
|
async def run_single_bit(dut):
|
|
|
|
log = logging.getLogger("cocotb.tb")
|
|
log.setLevel(logging.DEBUG)
|
|
|
|
for i in range(32):
|
|
in_val = 1 << i
|
|
|
|
log.info("In: 0x%08x", in_val)
|
|
dut.input_mask.value = in_val
|
|
|
|
await Timer(1, "ns")
|
|
|
|
log.info("Out (index): %d", int(dut.output_index.value))
|
|
log.info("Out (mask): 0x%08x", int(dut.output_mask.value))
|
|
|
|
assert int(dut.output_valid.value)
|
|
assert int(dut.output_index.value) == i
|
|
assert int(dut.output_mask.value) == 1 << i
|
|
|
|
|
|
@cocotb.test()
|
|
async def run_two_bits(dut):
|
|
|
|
lsb_high_prio = bool(int(dut.LSB_HIGH_PRIO.value))
|
|
|
|
log = logging.getLogger("cocotb.tb")
|
|
log.setLevel(logging.DEBUG)
|
|
|
|
for i in range(32):
|
|
for j in range(32):
|
|
in_val = (1 << i) | (1 << j)
|
|
|
|
log.info("In: 0x%08x", in_val)
|
|
dut.input_mask.value = in_val
|
|
|
|
await Timer(1, "ns")
|
|
|
|
log.info("Out (index): %d", int(dut.output_index.value))
|
|
log.info("Out (mask): 0x%08x", int(dut.output_mask.value))
|
|
|
|
assert int(dut.output_valid.value)
|
|
if lsb_high_prio:
|
|
assert int(dut.output_index.value) == min(i, j)
|
|
assert int(dut.output_mask.value) == 1 << min(i, j)
|
|
else:
|
|
assert int(dut.output_index.value) == max(i, j)
|
|
assert int(dut.output_mask.value) == 1 << max(i, j)
|
|
|
|
|
|
# cocotb-test
|
|
|
|
tests_dir = os.path.abspath(os.path.dirname(__file__))
|
|
rtl_dir = os.path.abspath(os.path.join(tests_dir, '..', '..', '..', 'rtl'))
|
|
|
|
|
|
def process_f_files(files):
|
|
lst = {}
|
|
for f in files:
|
|
if f[-2:].lower() == '.f':
|
|
with open(f, 'r') as fp:
|
|
l = fp.read().split()
|
|
for f in process_f_files([os.path.join(os.path.dirname(f), x) for x in l]):
|
|
lst[os.path.basename(f)] = f
|
|
else:
|
|
lst[os.path.basename(f)] = f
|
|
return list(lst.values())
|
|
|
|
|
|
@pytest.mark.parametrize("lsb_high_prio", [0, 1])
|
|
def test_taxi_penc(request, lsb_high_prio):
|
|
dut = "taxi_penc"
|
|
module = os.path.splitext(os.path.basename(__file__))[0]
|
|
toplevel = dut
|
|
|
|
verilog_sources = [
|
|
os.path.join(rtl_dir, "prim", f"{dut}.sv"),
|
|
]
|
|
|
|
verilog_sources = process_f_files(verilog_sources)
|
|
|
|
parameters = {}
|
|
|
|
parameters['WIDTH'] = 32
|
|
parameters['LSB_HIGH_PRIO'] = f"1'b{lsb_high_prio}"
|
|
|
|
extra_env = {f'PARAM_{k}': str(v) for k, v in parameters.items()}
|
|
|
|
sim_build = os.path.join(tests_dir, "sim_build",
|
|
request.node.name.replace('[', '-').replace(']', ''))
|
|
|
|
cocotb_test.simulator.run(
|
|
simulator="verilator",
|
|
python_search=[tests_dir],
|
|
verilog_sources=verilog_sources,
|
|
toplevel=toplevel,
|
|
module=module,
|
|
parameters=parameters,
|
|
sim_build=sim_build,
|
|
extra_env=extra_env,
|
|
)
|