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verilog-ethernet/tb/test_axis_switch_4x4_64.py
Alex Forencich 3063bba54b Update testbenches to use wait
2018-07-02 16:19:35 -07:00

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#!/usr/bin/env python
"""
Copyright (c) 2016-2018 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_switch_4x4'
testbench = 'test_%s_64' % module
srcs = []
srcs.append("../rtl/%s.v" % module)
srcs.append("../rtl/arbiter.v")
srcs.append("../rtl/priority_encoder.v")
srcs.append("%s.v" % testbench)
src = ' '.join(srcs)
build_cmd = "iverilog -o %s.vvp %s" % (testbench, src)
def bench():
# Parameters
DATA_WIDTH = 64
KEEP_ENABLE = (DATA_WIDTH>8)
KEEP_WIDTH = (DATA_WIDTH/8)
ID_ENABLE = 1
ID_WIDTH = 8
DEST_WIDTH = 3
USER_ENABLE = 1
USER_WIDTH = 1
OUT_0_BASE = 0
OUT_0_TOP = 0
OUT_0_CONNECT = 0xf
OUT_1_BASE = 1
OUT_1_TOP = 1
OUT_1_CONNECT = 0xf
OUT_2_BASE = 2
OUT_2_TOP = 2
OUT_2_CONNECT = 0xf
OUT_3_BASE = 3
OUT_3_TOP = 3
OUT_3_CONNECT = 0xf
ARB_TYPE = "ROUND_ROBIN"
LSB_PRIORITY = "HIGH"
# Inputs
clk = Signal(bool(0))
rst = Signal(bool(0))
current_test = Signal(intbv(0)[8:])
input_0_axis_tdata = Signal(intbv(0)[DATA_WIDTH:])
input_0_axis_tkeep = Signal(intbv(1)[KEEP_WIDTH:])
input_0_axis_tvalid = Signal(bool(0))
input_0_axis_tlast = Signal(bool(0))
input_0_axis_tid = Signal(intbv(0)[ID_WIDTH:])
input_0_axis_tdest = Signal(intbv(0)[DEST_WIDTH:])
input_0_axis_tuser = Signal(intbv(0)[USER_WIDTH:])
input_1_axis_tdata = Signal(intbv(0)[DATA_WIDTH:])
input_1_axis_tkeep = Signal(intbv(1)[KEEP_WIDTH:])
input_1_axis_tvalid = Signal(bool(0))
input_1_axis_tlast = Signal(bool(0))
input_1_axis_tid = Signal(intbv(0)[ID_WIDTH:])
input_1_axis_tdest = Signal(intbv(0)[DEST_WIDTH:])
input_1_axis_tuser = Signal(intbv(0)[USER_WIDTH:])
input_2_axis_tdata = Signal(intbv(0)[DATA_WIDTH:])
input_2_axis_tkeep = Signal(intbv(1)[KEEP_WIDTH:])
input_2_axis_tvalid = Signal(bool(0))
input_2_axis_tlast = Signal(bool(0))
input_2_axis_tid = Signal(intbv(0)[ID_WIDTH:])
input_2_axis_tdest = Signal(intbv(0)[DEST_WIDTH:])
input_2_axis_tuser = Signal(intbv(0)[USER_WIDTH:])
input_3_axis_tdata = Signal(intbv(0)[DATA_WIDTH:])
input_3_axis_tkeep = Signal(intbv(1)[KEEP_WIDTH:])
input_3_axis_tvalid = Signal(bool(0))
input_3_axis_tlast = Signal(bool(0))
input_3_axis_tid = Signal(intbv(0)[ID_WIDTH:])
input_3_axis_tdest = Signal(intbv(0)[DEST_WIDTH:])
input_3_axis_tuser = Signal(intbv(0)[USER_WIDTH:])
output_0_axis_tready = Signal(bool(0))
output_1_axis_tready = Signal(bool(0))
output_2_axis_tready = Signal(bool(0))
output_3_axis_tready = Signal(bool(0))
# Outputs
input_0_axis_tready = Signal(bool(0))
input_1_axis_tready = Signal(bool(0))
input_2_axis_tready = Signal(bool(0))
input_3_axis_tready = Signal(bool(0))
output_0_axis_tdata = Signal(intbv(0)[DATA_WIDTH:])
output_0_axis_tkeep = Signal(intbv(1)[KEEP_WIDTH:])
output_0_axis_tvalid = Signal(bool(0))
output_0_axis_tlast = Signal(bool(0))
output_0_axis_tid = Signal(intbv(0)[ID_WIDTH:])
output_0_axis_tdest = Signal(intbv(0)[DEST_WIDTH:])
output_0_axis_tuser = Signal(intbv(0)[USER_WIDTH:])
output_1_axis_tdata = Signal(intbv(0)[DATA_WIDTH:])
output_1_axis_tkeep = Signal(intbv(1)[KEEP_WIDTH:])
output_1_axis_tvalid = Signal(bool(0))
output_1_axis_tlast = Signal(bool(0))
output_1_axis_tid = Signal(intbv(0)[ID_WIDTH:])
output_1_axis_tdest = Signal(intbv(0)[DEST_WIDTH:])
output_1_axis_tuser = Signal(intbv(0)[USER_WIDTH:])
output_2_axis_tdata = Signal(intbv(0)[DATA_WIDTH:])
output_2_axis_tkeep = Signal(intbv(1)[KEEP_WIDTH:])
output_2_axis_tvalid = Signal(bool(0))
output_2_axis_tlast = Signal(bool(0))
output_2_axis_tid = Signal(intbv(0)[ID_WIDTH:])
output_2_axis_tdest = Signal(intbv(0)[DEST_WIDTH:])
output_2_axis_tuser = Signal(intbv(0)[USER_WIDTH:])
output_3_axis_tdata = Signal(intbv(0)[DATA_WIDTH:])
output_3_axis_tkeep = Signal(intbv(1)[KEEP_WIDTH:])
output_3_axis_tvalid = Signal(bool(0))
output_3_axis_tlast = Signal(bool(0))
output_3_axis_tid = Signal(intbv(0)[ID_WIDTH:])
output_3_axis_tdest = Signal(intbv(0)[DEST_WIDTH:])
output_3_axis_tuser = Signal(intbv(0)[USER_WIDTH:])
# sources and sinks
source_0_pause = Signal(bool(0))
source_1_pause = Signal(bool(0))
source_2_pause = Signal(bool(0))
source_3_pause = Signal(bool(0))
sink_0_pause = Signal(bool(0))
sink_1_pause = Signal(bool(0))
sink_2_pause = Signal(bool(0))
sink_3_pause = Signal(bool(0))
source_0 = axis_ep.AXIStreamSource()
source_0_logic = source_0.create_logic(
clk,
rst,
tdata=input_0_axis_tdata,
tkeep=input_0_axis_tkeep,
tvalid=input_0_axis_tvalid,
tready=input_0_axis_tready,
tlast=input_0_axis_tlast,
tid=input_0_axis_tid,
tdest=input_0_axis_tdest,
tuser=input_0_axis_tuser,
pause=source_0_pause,
name='source_0'
)
source_1 = axis_ep.AXIStreamSource()
source_1_logic = source_1.create_logic(
clk,
rst,
tdata=input_1_axis_tdata,
tkeep=input_1_axis_tkeep,
tvalid=input_1_axis_tvalid,
tready=input_1_axis_tready,
tlast=input_1_axis_tlast,
tid=input_1_axis_tid,
tdest=input_1_axis_tdest,
tuser=input_1_axis_tuser,
pause=source_1_pause,
name='source_1'
)
source_2 = axis_ep.AXIStreamSource()
source_2_logic = source_2.create_logic(
clk,
rst,
tdata=input_2_axis_tdata,
tkeep=input_2_axis_tkeep,
tvalid=input_2_axis_tvalid,
tready=input_2_axis_tready,
tlast=input_2_axis_tlast,
tid=input_2_axis_tid,
tdest=input_2_axis_tdest,
tuser=input_2_axis_tuser,
pause=source_2_pause,
name='source_2'
)
source_3 = axis_ep.AXIStreamSource()
source_3_logic = source_3.create_logic(
clk,
rst,
tdata=input_3_axis_tdata,
tkeep=input_3_axis_tkeep,
tvalid=input_3_axis_tvalid,
tready=input_3_axis_tready,
tlast=input_3_axis_tlast,
tid=input_3_axis_tid,
tdest=input_3_axis_tdest,
tuser=input_3_axis_tuser,
pause=source_3_pause,
name='source_3'
)
sink_0 = axis_ep.AXIStreamSink()
sink_0_logic = sink_0.create_logic(
clk,
rst,
tdata=output_0_axis_tdata,
tkeep=output_0_axis_tkeep,
tvalid=output_0_axis_tvalid,
tready=output_0_axis_tready,
tlast=output_0_axis_tlast,
tid=output_0_axis_tid,
tdest=output_0_axis_tdest,
tuser=output_0_axis_tuser,
pause=sink_0_pause,
name='sink_0'
)
sink_1 = axis_ep.AXIStreamSink()
sink_1_logic = sink_1.create_logic(
clk,
rst,
tdata=output_1_axis_tdata,
tkeep=output_1_axis_tkeep,
tvalid=output_1_axis_tvalid,
tready=output_1_axis_tready,
tlast=output_1_axis_tlast,
tid=output_1_axis_tid,
tdest=output_1_axis_tdest,
tuser=output_1_axis_tuser,
pause=sink_1_pause,
name='sink_1'
)
sink_2 = axis_ep.AXIStreamSink()
sink_2_logic = sink_2.create_logic(
clk,
rst,
tdata=output_2_axis_tdata,
tkeep=output_2_axis_tkeep,
tvalid=output_2_axis_tvalid,
tready=output_2_axis_tready,
tlast=output_2_axis_tlast,
tid=output_2_axis_tid,
tdest=output_2_axis_tdest,
tuser=output_2_axis_tuser,
pause=sink_2_pause,
name='sink_2'
)
sink_3 = axis_ep.AXIStreamSink()
sink_3_logic = sink_3.create_logic(
clk,
rst,
tdata=output_3_axis_tdata,
tkeep=output_3_axis_tkeep,
tvalid=output_3_axis_tvalid,
tready=output_3_axis_tready,
tlast=output_3_axis_tlast,
tid=output_3_axis_tid,
tdest=output_3_axis_tdest,
tuser=output_3_axis_tuser,
pause=sink_3_pause,
name='sink_3'
)
# DUT
if os.system(build_cmd):
raise Exception("Error running build command")
dut = Cosimulation(
"vvp -m myhdl %s.vvp -lxt2" % testbench,
clk=clk,
rst=rst,
current_test=current_test,
input_0_axis_tdata=input_0_axis_tdata,
input_0_axis_tkeep=input_0_axis_tkeep,
input_0_axis_tvalid=input_0_axis_tvalid,
input_0_axis_tready=input_0_axis_tready,
input_0_axis_tlast=input_0_axis_tlast,
input_0_axis_tid=input_0_axis_tid,
input_0_axis_tdest=input_0_axis_tdest,
input_0_axis_tuser=input_0_axis_tuser,
input_1_axis_tdata=input_1_axis_tdata,
input_1_axis_tkeep=input_1_axis_tkeep,
input_1_axis_tvalid=input_1_axis_tvalid,
input_1_axis_tready=input_1_axis_tready,
input_1_axis_tlast=input_1_axis_tlast,
input_1_axis_tid=input_1_axis_tid,
input_1_axis_tdest=input_1_axis_tdest,
input_1_axis_tuser=input_1_axis_tuser,
input_2_axis_tdata=input_2_axis_tdata,
input_2_axis_tkeep=input_2_axis_tkeep,
input_2_axis_tvalid=input_2_axis_tvalid,
input_2_axis_tready=input_2_axis_tready,
input_2_axis_tlast=input_2_axis_tlast,
input_2_axis_tid=input_2_axis_tid,
input_2_axis_tdest=input_2_axis_tdest,
input_2_axis_tuser=input_2_axis_tuser,
input_3_axis_tdata=input_3_axis_tdata,
input_3_axis_tkeep=input_3_axis_tkeep,
input_3_axis_tvalid=input_3_axis_tvalid,
input_3_axis_tready=input_3_axis_tready,
input_3_axis_tlast=input_3_axis_tlast,
input_3_axis_tid=input_3_axis_tid,
input_3_axis_tdest=input_3_axis_tdest,
input_3_axis_tuser=input_3_axis_tuser,
output_0_axis_tdata=output_0_axis_tdata,
output_0_axis_tkeep=output_0_axis_tkeep,
output_0_axis_tvalid=output_0_axis_tvalid,
output_0_axis_tready=output_0_axis_tready,
output_0_axis_tlast=output_0_axis_tlast,
output_0_axis_tid=output_0_axis_tid,
output_0_axis_tdest=output_0_axis_tdest,
output_0_axis_tuser=output_0_axis_tuser,
output_1_axis_tdata=output_1_axis_tdata,
output_1_axis_tkeep=output_1_axis_tkeep,
output_1_axis_tvalid=output_1_axis_tvalid,
output_1_axis_tready=output_1_axis_tready,
output_1_axis_tlast=output_1_axis_tlast,
output_1_axis_tid=output_1_axis_tid,
output_1_axis_tdest=output_1_axis_tdest,
output_1_axis_tuser=output_1_axis_tuser,
output_2_axis_tdata=output_2_axis_tdata,
output_2_axis_tkeep=output_2_axis_tkeep,
output_2_axis_tvalid=output_2_axis_tvalid,
output_2_axis_tready=output_2_axis_tready,
output_2_axis_tlast=output_2_axis_tlast,
output_2_axis_tid=output_2_axis_tid,
output_2_axis_tdest=output_2_axis_tdest,
output_2_axis_tuser=output_2_axis_tuser,
output_3_axis_tdata=output_3_axis_tdata,
output_3_axis_tkeep=output_3_axis_tkeep,
output_3_axis_tvalid=output_3_axis_tvalid,
output_3_axis_tready=output_3_axis_tready,
output_3_axis_tlast=output_3_axis_tlast,
output_3_axis_tid=output_3_axis_tid,
output_3_axis_tdest=output_3_axis_tdest,
output_3_axis_tuser=output_3_axis_tuser
)
@always(delay(4))
def clkgen():
clk.next = not clk
def wait_normal():
while input_0_axis_tvalid or input_1_axis_tvalid or input_2_axis_tvalid or input_3_axis_tvalid:
yield clk.posedge
def wait_pause_source():
while input_0_axis_tvalid or input_1_axis_tvalid or input_2_axis_tvalid or input_3_axis_tvalid:
source_0_pause.next = True
source_1_pause.next = True
source_2_pause.next = True
source_3_pause.next = True
yield clk.posedge
yield clk.posedge
yield clk.posedge
source_0_pause.next = False
source_1_pause.next = False
source_2_pause.next = False
source_3_pause.next = False
yield clk.posedge
def wait_pause_sink():
while input_0_axis_tvalid or input_1_axis_tvalid or input_2_axis_tvalid or input_3_axis_tvalid:
sink_0_pause.next = True
sink_1_pause.next = True
sink_2_pause.next = True
sink_3_pause.next = True
yield clk.posedge
yield clk.posedge
yield clk.posedge
sink_0_pause.next = False
sink_1_pause.next = False
sink_2_pause.next = False
sink_3_pause.next = False
yield clk.posedge
@instance
def check():
yield delay(100)
yield clk.posedge
rst.next = 1
yield clk.posedge
rst.next = 0
yield clk.posedge
yield delay(100)
yield clk.posedge
# testbench stimulus
yield clk.posedge
print("test 1: 0123 -> 0123")
current_test.next = 1
test_frame0 = axis_ep.AXIStreamFrame(b'\x01\x00\x00\xFF\x01\x02\x03\x04\x05\x06\x07\x08', id=0, dest=0)
test_frame1 = axis_ep.AXIStreamFrame(b'\x01\x01\x01\xFF\x01\x02\x03\x04\x05\x06\x07\x08', id=1, dest=1)
test_frame2 = axis_ep.AXIStreamFrame(b'\x01\x02\x02\xFF\x01\x02\x03\x04\x05\x06\x07\x08', id=2, dest=2)
test_frame3 = axis_ep.AXIStreamFrame(b'\x01\x03\x03\xFF\x01\x02\x03\x04\x05\x06\x07\x08', id=3, dest=3)
for wait in wait_normal, wait_pause_source, wait_pause_sink:
source_0.send(test_frame0)
source_1.send(test_frame1)
source_2.send(test_frame2)
source_3.send(test_frame3)
yield clk.posedge
yield clk.posedge
yield wait()
yield sink_0.wait()
rx_frame0 = sink_0.recv()
assert rx_frame0 == test_frame0
yield sink_1.wait()
rx_frame1 = sink_1.recv()
assert rx_frame1 == test_frame1
yield sink_2.wait()
rx_frame2 = sink_2.recv()
assert rx_frame2 == test_frame2
yield sink_3.wait()
rx_frame3 = sink_3.recv()
assert rx_frame3 == test_frame3
yield delay(100)
yield clk.posedge
print("test 2: 0123 -> 3210")
current_test.next = 2
test_frame0 = axis_ep.AXIStreamFrame(b'\x02\x00\x03\xFF\x01\x02\x03\x04\x05\x06\x07\x08', id=0, dest=3)
test_frame1 = axis_ep.AXIStreamFrame(b'\x02\x01\x02\xFF\x01\x02\x03\x04\x05\x06\x07\x08', id=1, dest=2)
test_frame2 = axis_ep.AXIStreamFrame(b'\x02\x02\x01\xFF\x01\x02\x03\x04\x05\x06\x07\x08', id=2, dest=1)
test_frame3 = axis_ep.AXIStreamFrame(b'\x02\x03\x00\xFF\x01\x02\x03\x04\x05\x06\x07\x08', id=3, dest=0)
for wait in wait_normal, wait_pause_source, wait_pause_sink:
source_0.send(test_frame0)
source_1.send(test_frame1)
source_2.send(test_frame2)
source_3.send(test_frame3)
yield clk.posedge
yield clk.posedge
yield wait()
yield sink_0.wait()
rx_frame0 = sink_0.recv()
assert rx_frame0 == test_frame3
yield sink_1.wait()
rx_frame1 = sink_1.recv()
assert rx_frame1 == test_frame2
yield sink_2.wait()
rx_frame2 = sink_2.recv()
assert rx_frame2 == test_frame1
yield sink_3.wait()
rx_frame3 = sink_3.recv()
assert rx_frame3 == test_frame0
yield delay(100)
yield clk.posedge
print("test 3: 0000 -> 0123")
current_test.next = 3
test_frame0 = axis_ep.AXIStreamFrame(b'\x02\x00\x00\xFF\x01\x02\x03\x04\x05\x06\x07\x08', id=0, dest=0)
test_frame1 = axis_ep.AXIStreamFrame(b'\x02\x00\x01\xFF\x01\x02\x03\x04\x05\x06\x07\x08', id=0, dest=1)
test_frame2 = axis_ep.AXIStreamFrame(b'\x02\x00\x02\xFF\x01\x02\x03\x04\x05\x06\x07\x08', id=0, dest=2)
test_frame3 = axis_ep.AXIStreamFrame(b'\x02\x00\x03\xFF\x01\x02\x03\x04\x05\x06\x07\x08', id=0, dest=3)
for wait in wait_normal, wait_pause_source, wait_pause_sink:
source_0.send(test_frame0)
source_0.send(test_frame1)
source_0.send(test_frame2)
source_0.send(test_frame3)
yield clk.posedge
yield clk.posedge
yield wait()
yield sink_0.wait()
rx_frame0 = sink_0.recv()
assert rx_frame0 == test_frame0
yield sink_1.wait()
rx_frame1 = sink_1.recv()
assert rx_frame1 == test_frame1
yield sink_2.wait()
rx_frame2 = sink_2.recv()
assert rx_frame2 == test_frame2
yield sink_3.wait()
rx_frame3 = sink_3.recv()
assert rx_frame3 == test_frame3
yield delay(100)
yield clk.posedge
print("test 4: 0123 -> 0000")
current_test.next = 4
test_frame0 = axis_ep.AXIStreamFrame(b'\x02\x00\x00\xFF\x01\x02\x03\x04\x05\x06\x07\x08', id=0, dest=0)
test_frame1 = axis_ep.AXIStreamFrame(b'\x02\x01\x00\xFF\x01\x02\x03\x04\x05\x06\x07\x08', id=1, dest=0)
test_frame2 = axis_ep.AXIStreamFrame(b'\x02\x02\x00\xFF\x01\x02\x03\x04\x05\x06\x07\x08', id=2, dest=0)
test_frame3 = axis_ep.AXIStreamFrame(b'\x02\x03\x00\xFF\x01\x02\x03\x04\x05\x06\x07\x08', id=3, dest=0)
for wait in wait_normal, wait_pause_source, wait_pause_sink:
source_0.send(test_frame0)
yield clk.posedge
source_1.send(test_frame1)
source_2.send(test_frame2)
source_3.send(test_frame3)
yield clk.posedge
yield wait()
yield sink_0.wait()
rx_frame0 = sink_0.recv()
assert rx_frame0 == test_frame0
yield sink_0.wait()
rx_frame1 = sink_0.recv()
assert rx_frame1 == test_frame1
yield sink_0.wait()
rx_frame2 = sink_0.recv()
assert rx_frame2 == test_frame2
yield sink_0.wait()
rx_frame3 = sink_0.recv()
assert rx_frame3 == test_frame3
yield delay(100)
yield clk.posedge
print("test 1: bad decoding")
current_test.next = 1
test_frame0 = axis_ep.AXIStreamFrame(b'\x01\x00\x00\xFF\x01\x02\x03\x04\x05\x06\x07\x08', id=0, dest=0)
test_frame1 = axis_ep.AXIStreamFrame(b'\x01\x01\x01\xFF\x01\x02\x03\x04\x05\x06\x07\x08', id=1, dest=1)
test_frame2 = axis_ep.AXIStreamFrame(b'\x01\x02\x04\xFF\x01\x02\x03\x04\x05\x06\x07\x08', id=2, dest=4)
test_frame3 = axis_ep.AXIStreamFrame(b'\x01\x03\x05\xFF\x01\x02\x03\x04\x05\x06\x07\x08', id=3, dest=5)
for wait in wait_normal, wait_pause_source, wait_pause_sink:
source_0.send(test_frame0)
source_1.send(test_frame1)
source_2.send(test_frame2)
source_3.send(test_frame3)
yield clk.posedge
yield clk.posedge
yield wait()
yield sink_0.wait()
rx_frame0 = sink_0.recv()
assert rx_frame0 == test_frame0
yield sink_1.wait()
rx_frame1 = sink_1.recv()
assert rx_frame1 == test_frame1
yield delay(100)
raise StopSimulation
return instances()
def test_bench():
sim = Simulation(bench())
sim.run()
if __name__ == '__main__':
print("Running test...")
test_bench()
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