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corundum/tb/test_axis_async_frame_fifo.py
Alex Forencich 2f883681d6 Add pararametrizable output pipeline to FIFOs
2020-09-07 00:14:22 -07:00

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#!/usr/bin/env python
"""
Copyright (c) 2014-2018 Alex Forencich
Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:
The above copyright notice and this permission notice shall be included in
all copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
THE SOFTWARE.
"""
from myhdl import *
import os
import axis_ep
module = 'axis_async_fifo'
testbench = 'test_axis_async_frame_fifo'
srcs = []
srcs.append("../rtl/%s.v" % module)
srcs.append("%s.v" % testbench)
src = ' '.join(srcs)
build_cmd = "iverilog -o %s.vvp %s" % (testbench, src)
def bench():
# Parameters
DEPTH = 512
DATA_WIDTH = 8
KEEP_ENABLE = (DATA_WIDTH>8)
KEEP_WIDTH = (DATA_WIDTH/8)
LAST_ENABLE = 1
ID_ENABLE = 1
ID_WIDTH = 8
DEST_ENABLE = 1
DEST_WIDTH = 8
USER_ENABLE = 1
USER_WIDTH = 1
PIPELINE_OUTPUT = 2
FRAME_FIFO = 1
USER_BAD_FRAME_VALUE = 1
USER_BAD_FRAME_MASK = 1
DROP_BAD_FRAME = 1
DROP_WHEN_FULL = 0
# Inputs
async_rst = Signal(bool(0))
s_clk = Signal(bool(0))
m_clk = Signal(bool(0))
current_test = Signal(intbv(0)[8:])
s_axis_tdata = Signal(intbv(0)[DATA_WIDTH:])
s_axis_tkeep = Signal(intbv(1)[KEEP_WIDTH:])
s_axis_tvalid = Signal(bool(0))
s_axis_tlast = Signal(bool(0))
s_axis_tid = Signal(intbv(0)[ID_WIDTH:])
s_axis_tdest = Signal(intbv(0)[DEST_WIDTH:])
s_axis_tuser = Signal(intbv(0)[USER_WIDTH:])
m_axis_tready = Signal(bool(0))
# Outputs
s_axis_tready = Signal(bool(0))
m_axis_tdata = Signal(intbv(0)[DATA_WIDTH:])
m_axis_tkeep = Signal(intbv(1)[KEEP_WIDTH:])
m_axis_tvalid = Signal(bool(0))
m_axis_tlast = Signal(bool(0))
m_axis_tid = Signal(intbv(0)[ID_WIDTH:])
m_axis_tdest = Signal(intbv(0)[DEST_WIDTH:])
m_axis_tuser = Signal(intbv(0)[USER_WIDTH:])
s_status_overflow = Signal(bool(0))
s_status_bad_frame = Signal(bool(0))
s_status_good_frame = Signal(bool(0))
m_status_overflow = Signal(bool(0))
m_status_bad_frame = Signal(bool(0))
m_status_good_frame = Signal(bool(0))
# sources and sinks
source_pause = Signal(bool(0))
sink_pause = Signal(bool(0))
source = axis_ep.AXIStreamSource()
source_logic = source.create_logic(
s_clk,
async_rst,
tdata=s_axis_tdata,
tkeep=s_axis_tkeep,
tvalid=s_axis_tvalid,
tready=s_axis_tready,
tlast=s_axis_tlast,
tid=s_axis_tid,
tdest=s_axis_tdest,
tuser=s_axis_tuser,
pause=source_pause,
name='source'
)
sink = axis_ep.AXIStreamSink()
sink_logic = sink.create_logic(
m_clk,
async_rst,
tdata=m_axis_tdata,
tkeep=m_axis_tkeep,
tvalid=m_axis_tvalid,
tready=m_axis_tready,
tlast=m_axis_tlast,
tid=m_axis_tid,
tdest=m_axis_tdest,
tuser=m_axis_tuser,
pause=sink_pause,
name='sink'
)
# DUT
if os.system(build_cmd):
raise Exception("Error running build command")
dut = Cosimulation(
"vvp -m myhdl %s.vvp -lxt2" % testbench,
async_rst=async_rst,
s_clk=s_clk,
m_clk=m_clk,
current_test=current_test,
s_axis_tdata=s_axis_tdata,
s_axis_tkeep=s_axis_tkeep,
s_axis_tvalid=s_axis_tvalid,
s_axis_tready=s_axis_tready,
s_axis_tlast=s_axis_tlast,
s_axis_tid=s_axis_tid,
s_axis_tdest=s_axis_tdest,
s_axis_tuser=s_axis_tuser,
m_axis_tdata=m_axis_tdata,
m_axis_tkeep=m_axis_tkeep,
m_axis_tvalid=m_axis_tvalid,
m_axis_tready=m_axis_tready,
m_axis_tlast=m_axis_tlast,
m_axis_tid=m_axis_tid,
m_axis_tdest=m_axis_tdest,
m_axis_tuser=m_axis_tuser,
s_status_overflow=s_status_overflow,
s_status_bad_frame=s_status_bad_frame,
s_status_good_frame=s_status_good_frame,
m_status_overflow=m_status_overflow,
m_status_bad_frame=m_status_bad_frame,
m_status_good_frame=m_status_good_frame
)
@always(delay(4))
def s_clkgen():
s_clk.next = not s_clk
@always(delay(5))
def m_clkgen():
m_clk.next = not m_clk
s_status_overflow_asserted = Signal(bool(0))
s_status_bad_frame_asserted = Signal(bool(0))
s_status_good_frame_asserted = Signal(bool(0))
m_status_overflow_asserted = Signal(bool(0))
m_status_bad_frame_asserted = Signal(bool(0))
m_status_good_frame_asserted = Signal(bool(0))
@always(s_clk.posedge)
def monitor_1():
if (s_status_overflow):
s_status_overflow_asserted.next = 1
if (s_status_bad_frame):
s_status_bad_frame_asserted.next = 1
if (s_status_good_frame):
s_status_good_frame_asserted.next = 1
@always(m_clk.posedge)
def monitor_2():
if (m_status_overflow):
m_status_overflow_asserted.next = 1
if (m_status_bad_frame):
m_status_bad_frame_asserted.next = 1
if (m_status_good_frame):
m_status_good_frame_asserted.next = 1
@instance
def check():
yield delay(100)
yield s_clk.posedge
async_rst.next = 1
yield s_clk.posedge
yield s_clk.posedge
yield s_clk.posedge
async_rst.next = 0
yield s_clk.posedge
yield delay(100)
yield s_clk.posedge
yield s_clk.posedge
yield s_clk.posedge
print("test 1: test packet")
current_test.next = 1
test_frame = axis_ep.AXIStreamFrame(
b'\xDA\xD1\xD2\xD3\xD4\xD5' +
b'\x5A\x51\x52\x53\x54\x55' +
b'\x80\x00' +
b'\x00\x01\x02\x03\x04\x05\x06\x07\x08\x09\x0a\x0b\x0c\x0d\x0e\x0f\x10',
id=1,
dest=1
)
s_status_overflow_asserted.next = 0
s_status_bad_frame_asserted.next = 0
s_status_good_frame_asserted.next = 0
m_status_overflow_asserted.next = 0
m_status_bad_frame_asserted.next = 0
m_status_good_frame_asserted.next = 0
source.send(test_frame)
yield sink.wait()
rx_frame = sink.recv()
assert rx_frame == test_frame
assert not s_status_overflow_asserted
assert not s_status_bad_frame_asserted
assert s_status_good_frame_asserted
assert not m_status_overflow_asserted
assert not m_status_bad_frame_asserted
assert m_status_good_frame_asserted
yield delay(100)
yield s_clk.posedge
print("test 2: longer packet")
current_test.next = 2
test_frame = axis_ep.AXIStreamFrame(
b'\xDA\xD1\xD2\xD3\xD4\xD5' +
b'\x5A\x51\x52\x53\x54\x55' +
b'\x80\x00' +
bytearray(range(256)),
id=2,
dest=1
)
s_status_overflow_asserted.next = 0
s_status_bad_frame_asserted.next = 0
s_status_good_frame_asserted.next = 0
m_status_overflow_asserted.next = 0
m_status_bad_frame_asserted.next = 0
m_status_good_frame_asserted.next = 0
source.send(test_frame)
yield sink.wait()
rx_frame = sink.recv()
assert rx_frame == test_frame
assert not s_status_overflow_asserted
assert not s_status_bad_frame_asserted
assert s_status_good_frame_asserted
assert not m_status_overflow_asserted
assert not m_status_bad_frame_asserted
assert m_status_good_frame_asserted
yield s_clk.posedge
print("test 3: test packet with pauses")
current_test.next = 3
test_frame = axis_ep.AXIStreamFrame(
b'\xDA\xD1\xD2\xD3\xD4\xD5' +
b'\x5A\x51\x52\x53\x54\x55' +
b'\x80\x00' +
b'\x00\x01\x02\x03\x04\x05\x06\x07\x08\x09\x0a\x0b\x0c\x0d\x0e\x0f\x10',
id=3,
dest=1
)
s_status_overflow_asserted.next = 0
s_status_bad_frame_asserted.next = 0
s_status_good_frame_asserted.next = 0
m_status_overflow_asserted.next = 0
m_status_bad_frame_asserted.next = 0
m_status_good_frame_asserted.next = 0
source.send(test_frame)
yield s_clk.posedge
yield delay(64)
yield s_clk.posedge
source_pause.next = True
yield delay(32)
yield s_clk.posedge
source_pause.next = False
yield delay(64)
yield m_clk.posedge
sink_pause.next = True
yield delay(32)
yield m_clk.posedge
sink_pause.next = False
yield sink.wait()
rx_frame = sink.recv()
assert rx_frame == test_frame
assert not s_status_overflow_asserted
assert not s_status_bad_frame_asserted
assert s_status_good_frame_asserted
assert not m_status_overflow_asserted
assert not m_status_bad_frame_asserted
assert m_status_good_frame_asserted
yield delay(100)
yield s_clk.posedge
print("test 4: back-to-back packets")
current_test.next = 4
test_frame1 = axis_ep.AXIStreamFrame(
b'\xDA\xD1\xD2\xD3\xD4\xD5' +
b'\x5A\x51\x52\x53\x54\x55' +
b'\x80\x00' +
b'\x01\x01\x02\x03\x04\x05\x06\x07\x08\x09\x0a\x0b\x0c\x0d\x0e\x0f\x10',
id=4,
dest=1
)
test_frame2 = axis_ep.AXIStreamFrame(
b'\xDA\xD1\xD2\xD3\xD4\xD5' +
b'\x5A\x51\x52\x53\x54\x55' +
b'\x80\x00' +
b'\x02\x01\x02\x03\x04\x05\x06\x07\x08\x09\x0a\x0b\x0c\x0d\x0e\x0f\x10',
id=4,
dest=2
)
s_status_overflow_asserted.next = 0
s_status_bad_frame_asserted.next = 0
s_status_good_frame_asserted.next = 0
m_status_overflow_asserted.next = 0
m_status_bad_frame_asserted.next = 0
m_status_good_frame_asserted.next = 0
source.send(test_frame1)
source.send(test_frame2)
yield sink.wait()
rx_frame = sink.recv()
assert rx_frame == test_frame1
yield sink.wait()
rx_frame = sink.recv()
assert rx_frame == test_frame2
assert not s_status_overflow_asserted
assert not s_status_bad_frame_asserted
assert s_status_good_frame_asserted
assert not m_status_overflow_asserted
assert not m_status_bad_frame_asserted
assert m_status_good_frame_asserted
yield delay(100)
yield s_clk.posedge
print("test 5: alternate pause source")
current_test.next = 5
test_frame1 = axis_ep.AXIStreamFrame(
b'\xDA\xD1\xD2\xD3\xD4\xD5' +
b'\x5A\x51\x52\x53\x54\x55' +
b'\x80\x00' +
b'\x01\x01\x02\x03\x04\x05\x06\x07\x08\x09\x0a\x0b\x0c\x0d\x0e\x0f\x10',
id=5,
dest=1
)
test_frame2 = axis_ep.AXIStreamFrame(
b'\xDA\xD1\xD2\xD3\xD4\xD5' +
b'\x5A\x51\x52\x53\x54\x55' +
b'\x80\x00' +
b'\x02\x01\x02\x03\x04\x05\x06\x07\x08\x09\x0a\x0b\x0c\x0d\x0e\x0f\x10',
id=5,
dest=2
)
s_status_overflow_asserted.next = 0
s_status_bad_frame_asserted.next = 0
s_status_good_frame_asserted.next = 0
m_status_overflow_asserted.next = 0
m_status_bad_frame_asserted.next = 0
m_status_good_frame_asserted.next = 0
source.send(test_frame1)
source.send(test_frame2)
yield s_clk.posedge
while s_axis_tvalid or m_axis_tvalid:
yield s_clk.posedge
yield s_clk.posedge
source_pause.next = False
yield s_clk.posedge
source_pause.next = True
yield s_clk.posedge
source_pause.next = False
yield sink.wait()
rx_frame = sink.recv()
assert rx_frame == test_frame1
yield sink.wait()
rx_frame = sink.recv()
assert rx_frame == test_frame2
assert not s_status_overflow_asserted
assert not s_status_bad_frame_asserted
assert s_status_good_frame_asserted
assert not m_status_overflow_asserted
assert not m_status_bad_frame_asserted
assert m_status_good_frame_asserted
yield delay(100)
yield s_clk.posedge
print("test 6: alternate pause sink")
current_test.next = 6
test_frame1 = axis_ep.AXIStreamFrame(
b'\xDA\xD1\xD2\xD3\xD4\xD5' +
b'\x5A\x51\x52\x53\x54\x55' +
b'\x80\x00' +
b'\x01\x01\x02\x03\x04\x05\x06\x07\x08\x09\x0a\x0b\x0c\x0d\x0e\x0f\x10',
id=1,
dest=6
)
test_frame2 = axis_ep.AXIStreamFrame(
b'\xDA\xD1\xD2\xD3\xD4\xD5' +
b'\x5A\x51\x52\x53\x54\x55' +
b'\x80\x00' +
b'\x02\x01\x02\x03\x04\x05\x06\x07\x08\x09\x0a\x0b\x0c\x0d\x0e\x0f\x10',
id=6,
dest=2
)
s_status_overflow_asserted.next = 0
s_status_bad_frame_asserted.next = 0
s_status_good_frame_asserted.next = 0
m_status_overflow_asserted.next = 0
m_status_bad_frame_asserted.next = 0
m_status_good_frame_asserted.next = 0
source.send(test_frame1)
source.send(test_frame2)
yield s_clk.posedge
while s_axis_tvalid or m_axis_tvalid:
sink_pause.next = True
yield m_clk.posedge
yield m_clk.posedge
yield m_clk.posedge
sink_pause.next = False
yield m_clk.posedge
yield sink.wait()
rx_frame = sink.recv()
assert rx_frame == test_frame1
yield sink.wait()
rx_frame = sink.recv()
assert rx_frame == test_frame2
assert not s_status_overflow_asserted
assert not s_status_bad_frame_asserted
assert s_status_good_frame_asserted
assert not m_status_overflow_asserted
assert not m_status_bad_frame_asserted
assert m_status_good_frame_asserted
yield delay(100)
yield s_clk.posedge
print("test 7: tuser assert")
current_test.next = 7
test_frame = axis_ep.AXIStreamFrame(
b'\xDA\xD1\xD2\xD3\xD4\xD5' +
b'\x5A\x51\x52\x53\x54\x55' +
b'\x80\x00' +
b'\x00\x01\x02\x03\x04\x05\x06\x07\x08\x09\x0a\x0b\x0c\x0d\x0e\x0f\x10',
id=7,
dest=1,
last_cycle_user=1
)
s_status_overflow_asserted.next = 0
s_status_bad_frame_asserted.next = 0
s_status_good_frame_asserted.next = 0
m_status_overflow_asserted.next = 0
m_status_bad_frame_asserted.next = 0
m_status_good_frame_asserted.next = 0
source.send(test_frame)
yield s_clk.posedge
yield delay(1000)
assert sink.empty()
assert not s_status_overflow_asserted
assert s_status_bad_frame_asserted
assert not s_status_good_frame_asserted
assert not m_status_overflow_asserted
assert m_status_bad_frame_asserted
assert not m_status_good_frame_asserted
yield delay(100)
yield s_clk.posedge
print("test 8: single packet overflow")
current_test.next = 8
test_frame = axis_ep.AXIStreamFrame(
b'\xDA\xD1\xD2\xD3\xD4\xD5' +
b'\x5A\x51\x52\x53\x54\x55' +
b'\x80\x00' +
bytearray(range(256))*2,
id=8,
dest=1
)
s_status_overflow_asserted.next = 0
s_status_bad_frame_asserted.next = 0
s_status_good_frame_asserted.next = 0
m_status_overflow_asserted.next = 0
m_status_bad_frame_asserted.next = 0
m_status_good_frame_asserted.next = 0
source.send(test_frame)
yield s_clk.posedge
yield delay(10000)
assert sink.empty()
assert s_status_overflow_asserted
assert not s_status_bad_frame_asserted
assert not s_status_good_frame_asserted
assert m_status_overflow_asserted
assert not m_status_bad_frame_asserted
assert not m_status_good_frame_asserted
yield delay(100)
yield s_clk.posedge
print("test 9: initial sink pause")
current_test.next = 9
test_frame = axis_ep.AXIStreamFrame(
b'\x01\x02\x03',
id=9,
dest=1
)
sink_pause.next = 1
source.send(test_frame)
yield s_clk.posedge
yield s_clk.posedge
yield s_clk.posedge
yield s_clk.posedge
sink_pause.next = 0
yield sink.wait()
rx_frame = sink.recv()
assert rx_frame == test_frame
yield delay(100)
yield s_clk.posedge
print("test 10: initial sink pause, assert reset")
current_test.next = 10
test_frame = axis_ep.AXIStreamFrame(
b'\x01\x02\x03',
id=10,
dest=1
)
sink_pause.next = 1
source.send(test_frame)
yield s_clk.posedge
yield s_clk.posedge
yield s_clk.posedge
yield s_clk.posedge
async_rst.next = 1
yield s_clk.posedge
async_rst.next = 0
sink_pause.next = 0
yield delay(100)
yield m_clk.posedge
yield m_clk.posedge
yield m_clk.posedge
assert sink.empty()
yield delay(100)
yield s_clk.posedge
print("test 11: backpressure test")
current_test.next = 11
test_frame = axis_ep.AXIStreamFrame(
b'\xDA\xD1\xD2\xD3\xD4\xD5' +
b'\x5A\x51\x52\x53\x54\x55' +
b'\x80\x00' +
bytearray(range(256)),
id=11,
dest=1
)
sink_pause.next = 1
source.send(test_frame)
source.send(test_frame)
yield delay(5000)
yield s_clk.posedge
sink_pause.next = 0
yield sink.wait()
rx_frame = sink.recv()
assert rx_frame == test_frame
yield sink.wait()
rx_frame = sink.recv()
assert rx_frame == test_frame
yield delay(100)
yield s_clk.posedge
print("test 12: many small packets")
current_test.next = 12
test_frame = axis_ep.AXIStreamFrame(
b'\xAA',
id=12,
dest=1
)
for k in range(64):
source.send(test_frame)
for k in range(64):
yield sink.wait()
rx_frame = sink.recv()
assert rx_frame == test_frame
yield delay(100)
raise StopSimulation
return instances()
def test_bench():
os.chdir(os.path.dirname(os.path.abspath(__file__)))
sim = Simulation(bench())
sim.run()
if __name__ == '__main__':
print("Running test...")
test_bench()
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