mirror of
https://github.com/alexforencich/verilog-ethernet.git
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595 lines
18 KiB
Python
595 lines
18 KiB
Python
#!/usr/bin/env python
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"""
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Copyright (c) 2023 Alex Forencich
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Permission is hereby granted, free of charge, to any person obtaining a copy
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of this software and associated documentation files (the "Software"), to deal
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in the Software without restriction, including without limitation the rights
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to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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copies of the Software, and to permit persons to whom the Software is
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furnished to do so, subject to the following conditions:
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The above copyright notice and this permission notice shall be included in
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all copies or substantial portions of the Software.
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THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY
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FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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THE SOFTWARE.
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"""
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import itertools
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import logging
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import os
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import random
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from scapy.layers.l2 import Ether
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import pytest
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import cocotb_test.simulator
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import cocotb
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from cocotb.clock import Clock
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from cocotb.triggers import RisingEdge
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from cocotb.regression import TestFactory
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from cocotbext.axi import AxiStreamBus, AxiStreamSource, AxiStreamSink, AxiStreamFrame
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from cocotbext.axi.stream import define_stream
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McfBus, McfTransaction, McfSource, McfSink, McfMonitor = define_stream("Mcf",
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signals=["valid", "eth_dst", "eth_src", "eth_type", "opcode", "params"],
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optional_signals=["ready", "id", "dest", "user"]
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)
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class TB:
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def __init__(self, dut):
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self.dut = dut
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self.log = logging.getLogger("cocotb.tb")
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self.log.setLevel(logging.DEBUG)
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cocotb.start_soon(Clock(dut.clk, 8, units="ns").start())
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self.source = AxiStreamSource(AxiStreamBus.from_prefix(dut, "s_axis"), dut.clk, dut.rst)
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self.sink = AxiStreamSink(AxiStreamBus.from_prefix(dut, "m_axis"), dut.clk, dut.rst)
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self.mcf_sink = McfSink(McfBus.from_prefix(dut, "mcf"), dut.clk, dut.rst)
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dut.cfg_mcf_rx_eth_dst_mcast.setimmediatevalue(0)
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dut.cfg_mcf_rx_check_eth_dst_mcast.setimmediatevalue(0)
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dut.cfg_mcf_rx_eth_dst_ucast.setimmediatevalue(0)
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dut.cfg_mcf_rx_check_eth_dst_ucast.setimmediatevalue(0)
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dut.cfg_mcf_rx_eth_src.setimmediatevalue(0)
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dut.cfg_mcf_rx_check_eth_src.setimmediatevalue(0)
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dut.cfg_mcf_rx_eth_type.setimmediatevalue(0)
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dut.cfg_mcf_rx_opcode_lfc.setimmediatevalue(0)
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dut.cfg_mcf_rx_check_opcode_lfc.setimmediatevalue(0)
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dut.cfg_mcf_rx_opcode_pfc.setimmediatevalue(0)
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dut.cfg_mcf_rx_check_opcode_pfc.setimmediatevalue(0)
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dut.cfg_mcf_rx_forward.setimmediatevalue(0)
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dut.cfg_mcf_rx_enable.setimmediatevalue(0)
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def set_idle_generator(self, generator=None):
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if generator:
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self.source.set_pause_generator(generator())
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def set_backpressure_generator(self, generator=None):
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if generator:
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self.sink.set_pause_generator(generator())
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async def reset(self):
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self.dut.rst.setimmediatevalue(0)
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await RisingEdge(self.dut.clk)
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await RisingEdge(self.dut.clk)
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self.dut.rst.value = 1
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await RisingEdge(self.dut.clk)
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await RisingEdge(self.dut.clk)
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self.dut.rst.value = 0
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await RisingEdge(self.dut.clk)
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await RisingEdge(self.dut.clk)
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async def send(self, pkt):
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await self.source.send(bytes(pkt))
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async def recv(self):
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rx_frame = await self.sink.recv()
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assert not rx_frame.tuser
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return Ether(bytes(rx_frame))
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async def recv_mcf(self):
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rx_frame = await self.mcf_sink.recv()
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data = bytearray()
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data.extend(rx_frame.eth_dst.integer.to_bytes(6, 'big'))
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data.extend(rx_frame.eth_src.integer.to_bytes(6, 'big'))
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data.extend(rx_frame.eth_type.integer.to_bytes(2, 'big'))
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data.extend(rx_frame.opcode.integer.to_bytes(2, 'big'))
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data.extend(rx_frame.params.integer.to_bytes(44, 'little'))
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return Ether(data)
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async def run_test_data(dut, payload_lengths=None, payload_data=None, idle_inserter=None, backpressure_inserter=None):
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tb = TB(dut)
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id_width = len(tb.source.bus.tid)
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id_count = 2**id_width
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id_mask = id_count-1
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src_width = 1
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src_mask = 2**src_width-1 if src_width else 0
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src_shift = id_width-src_width
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max_count = 2**src_shift
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count_mask = max_count-1
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cur_id = 1
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await tb.reset()
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tb.set_idle_generator(idle_inserter)
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tb.set_backpressure_generator(backpressure_inserter)
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test_frames = []
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for test_data in [payload_data(x) for x in payload_lengths()]:
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test_frame = AxiStreamFrame(test_data)
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test_frame.tid = cur_id
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test_frame.tdest = cur_id | (0 << src_shift)
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test_frames.append(test_frame)
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await tb.source.send(test_frame)
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cur_id = (cur_id + 1) % max_count
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for test_frame in test_frames:
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rx_frame = await tb.sink.recv()
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assert rx_frame.tdata == test_frame.tdata
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assert rx_frame.tid == test_frame.tid
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assert rx_frame.tdest == test_frame.tdest
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assert not rx_frame.tuser
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assert tb.sink.empty()
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assert tb.mcf_sink.empty()
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await RisingEdge(dut.clk)
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await RisingEdge(dut.clk)
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async def run_test_mcf(dut, payload_lengths=None, payload_data=None, idle_inserter=None, backpressure_inserter=None):
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tb = TB(dut)
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id_width = len(tb.source.bus.tid)
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id_count = 2**id_width
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id_mask = id_count-1
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src_width = 1
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src_mask = 2**src_width-1 if src_width else 0
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src_shift = id_width-src_width
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max_count = 2**src_shift
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count_mask = max_count-1
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cur_id = 1
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await tb.reset()
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dut.cfg_mcf_rx_eth_dst_mcast.value = 0x0180C2000001
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dut.cfg_mcf_rx_check_eth_dst_mcast.value = 0
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dut.cfg_mcf_rx_eth_dst_ucast.value = 0xDAD1D2D3D4D5
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dut.cfg_mcf_rx_check_eth_dst_ucast.value = 0
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dut.cfg_mcf_rx_eth_src.value = 0x5A5152535455
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dut.cfg_mcf_rx_check_eth_src.value = 0
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dut.cfg_mcf_rx_eth_type.value = 0x8808
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dut.cfg_mcf_rx_opcode_lfc.value = 0x0001
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dut.cfg_mcf_rx_check_opcode_lfc.value = 0
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dut.cfg_mcf_rx_opcode_pfc.value = 0x0101
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dut.cfg_mcf_rx_check_opcode_pfc.value = 0
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dut.cfg_mcf_rx_forward.value = 0
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dut.cfg_mcf_rx_enable.value = 1
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tb.set_idle_generator(idle_inserter)
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tb.set_backpressure_generator(backpressure_inserter)
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test_pkts = []
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for payload in [payload_data(x) for x in payload_lengths()]:
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eth = Ether(src='5A:51:52:53:54:55', dst='01:80:C2:00:00:01', type=0x8808)
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test_pkt = eth / (cur_id.to_bytes(2, 'big') + payload)
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test_pkts.append((cur_id, test_pkt.copy()))
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test_frame = AxiStreamFrame(bytes(test_pkt))
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test_frame.tid = cur_id
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test_frame.tdest = cur_id | (1 << src_shift)
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await tb.source.send(test_frame)
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cur_id = (cur_id + 1) % max_count
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for cur_id, test_pkt in test_pkts:
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rx_frame = await tb.sink.recv()
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assert rx_frame.tdata == bytes(test_pkt)
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assert rx_frame.tid == cur_id
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assert rx_frame.tdest == cur_id | (1 << src_shift)
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assert rx_frame.tuser
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rx_pkt = await tb.recv_mcf()
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tb.log.info("RX packet: %s", repr(rx_pkt))
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# check prefix as padding may be different
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assert bytes(rx_pkt).find(bytes(test_pkt)) == 0
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assert tb.sink.empty()
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assert tb.mcf_sink.empty()
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await RisingEdge(dut.clk)
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await RisingEdge(dut.clk)
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async def run_test_tuser_assert(dut):
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tb = TB(dut)
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byte_lanes = tb.source.byte_lanes
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await tb.reset()
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dut.cfg_mcf_rx_eth_dst_mcast.value = 0x0180C2000001
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dut.cfg_mcf_rx_check_eth_dst_mcast.value = 0
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dut.cfg_mcf_rx_eth_dst_ucast.value = 0xDAD1D2D3D4D5
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dut.cfg_mcf_rx_check_eth_dst_ucast.value = 0
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dut.cfg_mcf_rx_eth_src.value = 0x5A5152535455
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dut.cfg_mcf_rx_check_eth_src.value = 0
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dut.cfg_mcf_rx_eth_type.value = 0x8808
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dut.cfg_mcf_rx_opcode_lfc.value = 0x0001
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dut.cfg_mcf_rx_check_opcode_lfc.value = 0
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dut.cfg_mcf_rx_opcode_pfc.value = 0x0101
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dut.cfg_mcf_rx_check_opcode_pfc.value = 0
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dut.cfg_mcf_rx_forward.value = 0
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dut.cfg_mcf_rx_enable.value = 1
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# data
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payload = bytearray(itertools.islice(itertools.cycle(range(256)), byte_lanes*16))
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eth = Ether(src='5A:51:52:53:54:55', dst='DA:D1:D2:D3:D4:D5', type=0x8000)
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test_pkt = eth / payload
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test_frame = AxiStreamFrame(bytes(test_pkt), tuser=1)
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await tb.source.send(test_frame)
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rx_frame = await tb.sink.recv()
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assert rx_frame.tdata == test_frame.tdata
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assert rx_frame.tuser
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# MAC control
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payload = bytearray(itertools.islice(itertools.cycle(range(256)), 18))
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eth = Ether(src='5A:51:52:53:54:55', dst='01:80:C2:00:00:01', type=0x8808)
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test_pkt = eth / (b'\x00\x00' + payload)
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test_frame = AxiStreamFrame(bytes(test_pkt), tuser=1)
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await tb.source.send(test_frame)
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rx_frame = await tb.sink.recv()
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assert rx_frame.tdata == test_frame.tdata
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assert rx_frame.tuser
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assert tb.sink.empty()
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assert tb.mcf_sink.empty()
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await RisingEdge(dut.clk)
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await RisingEdge(dut.clk)
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async def run_test_mcf_filter(dut):
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tb = TB(dut)
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await tb.reset()
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dut.cfg_mcf_rx_eth_dst_mcast.value = 0x0180C2000001
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dut.cfg_mcf_rx_check_eth_dst_mcast.value = 0
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dut.cfg_mcf_rx_eth_dst_ucast.value = 0xDAD1D2D3D4D5
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dut.cfg_mcf_rx_check_eth_dst_ucast.value = 0
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dut.cfg_mcf_rx_eth_src.value = 0x5A5152535455
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dut.cfg_mcf_rx_check_eth_src.value = 0
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dut.cfg_mcf_rx_eth_type.value = 0x8808
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dut.cfg_mcf_rx_opcode_lfc.value = 0x0001
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dut.cfg_mcf_rx_check_opcode_lfc.value = 0
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dut.cfg_mcf_rx_opcode_pfc.value = 0x0101
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dut.cfg_mcf_rx_check_opcode_pfc.value = 0
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dut.cfg_mcf_rx_forward.value = 0
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dut.cfg_mcf_rx_enable.value = 1
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async def check(tb, pkt, should_match):
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await tb.source.send(bytes(pkt))
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rx_frame = await tb.sink.recv()
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assert rx_frame.tdata == bytes(pkt)
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if should_match:
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assert rx_frame.tuser
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rx_pkt = await tb.recv_mcf()
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assert bytes(rx_pkt).find(bytes(pkt)) == 0
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else:
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assert not rx_frame.tuser
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assert tb.sink.empty()
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assert tb.mcf_sink.empty()
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payload = bytearray(itertools.islice(itertools.cycle(range(256)), 18))
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# Multicast destination address
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dut.cfg_mcf_rx_check_eth_dst_mcast.value = 1
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eth = Ether(src='5A:51:52:53:54:55', dst='01:80:C2:00:00:01', type=0x8808)
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test_pkt = eth / (b'\x00\x00' + payload)
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await check(tb, test_pkt, True)
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eth = Ether(src='5A:51:52:53:54:55', dst='DA:D1:D2:D3:D4:D5', type=0x8808)
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test_pkt = eth / (b'\x00\x00' + payload)
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await check(tb, test_pkt, False)
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dut.cfg_mcf_rx_check_eth_dst_mcast.value = 0
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# Unicast destination address
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dut.cfg_mcf_rx_check_eth_dst_ucast.value = 1
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eth = Ether(src='5A:51:52:53:54:55', dst='DA:D1:D2:D3:D4:D5', type=0x8808)
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test_pkt = eth / (b'\x00\x00' + payload)
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await check(tb, test_pkt, True)
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eth = Ether(src='5A:51:52:53:54:55', dst='01:80:C2:00:00:01', type=0x8808)
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test_pkt = eth / (b'\x00\x00' + payload)
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await check(tb, test_pkt, False)
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dut.cfg_mcf_rx_check_eth_dst_ucast.value = 0
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# Source address
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dut.cfg_mcf_rx_check_eth_src.value = 1
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eth = Ether(src='5A:51:52:53:54:55', dst='01:80:C2:00:00:01', type=0x8808)
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test_pkt = eth / (b'\x00\x00' + payload)
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await check(tb, test_pkt, True)
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eth = Ether(src='5A:51:52:AA:AA:AA', dst='01:80:C2:00:00:01', type=0x8808)
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test_pkt = eth / (b'\x00\x00' + payload)
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await check(tb, test_pkt, False)
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dut.cfg_mcf_rx_check_eth_src.value = 0
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# Ethertype
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eth = Ether(src='5A:51:52:53:54:55', dst='01:80:C2:00:00:01', type=0x8808)
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test_pkt = eth / (b'\x00\x00' + payload)
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await check(tb, test_pkt, True)
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eth = Ether(src='5A:51:52:53:54:55', dst='01:80:C2:00:00:01', type=0x8880)
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test_pkt = eth / (b'\x00\x00' + payload)
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await check(tb, test_pkt, False)
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# Opcode
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dut.cfg_mcf_rx_check_opcode_lfc.value = 1
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dut.cfg_mcf_rx_check_opcode_pfc.value = 1
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eth = Ether(src='5A:51:52:53:54:55', dst='01:80:C2:00:00:01', type=0x8808)
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test_pkt = eth / (b'\x00\x01' + payload)
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await check(tb, test_pkt, True)
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eth = Ether(src='5A:51:52:53:54:55', dst='01:80:C2:00:00:01', type=0x8808)
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test_pkt = eth / (b'\x01\x01' + payload)
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await check(tb, test_pkt, True)
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eth = Ether(src='5A:51:52:53:54:55', dst='01:80:C2:00:00:01', type=0x8808)
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test_pkt = eth / (b'\x00\x00' + payload)
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await check(tb, test_pkt, False)
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dut.cfg_mcf_rx_check_opcode_lfc.value = 0
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dut.cfg_mcf_rx_check_opcode_pfc.value = 0
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assert tb.sink.empty()
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assert tb.mcf_sink.empty()
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await RisingEdge(dut.clk)
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await RisingEdge(dut.clk)
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async def run_stress_test(dut, idle_inserter=None, backpressure_inserter=None):
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tb = TB(dut)
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byte_lanes = tb.source.byte_lanes
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id_width = len(tb.source.bus.tid)
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id_count = 2**id_width
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id_mask = id_count-1
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src_width = 1
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src_mask = 2**src_width-1 if src_width else 0
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src_shift = id_width-src_width
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max_count = 2**src_shift
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count_mask = max_count-1
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cur_id = 1
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await tb.reset()
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dut.cfg_mcf_rx_eth_dst_mcast.value = 0x0180C2000001
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dut.cfg_mcf_rx_check_eth_dst_mcast.value = 0
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dut.cfg_mcf_rx_eth_dst_ucast.value = 0xDAD1D2D3D4D5
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dut.cfg_mcf_rx_check_eth_dst_ucast.value = 0
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dut.cfg_mcf_rx_eth_src.value = 0x5A5152535455
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dut.cfg_mcf_rx_check_eth_src.value = 0
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dut.cfg_mcf_rx_eth_type.value = 0x8808
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dut.cfg_mcf_rx_opcode_lfc.value = 0x0001
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dut.cfg_mcf_rx_check_opcode_lfc.value = 0
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|
dut.cfg_mcf_rx_opcode_pfc.value = 0x0101
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dut.cfg_mcf_rx_check_opcode_pfc.value = 0
|
|
|
|
dut.cfg_mcf_rx_forward.value = 0
|
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dut.cfg_mcf_rx_enable.value = 1
|
|
|
|
tb.set_idle_generator(idle_inserter)
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|
tb.set_backpressure_generator(backpressure_inserter)
|
|
|
|
test_pkts = []
|
|
|
|
for k in range(256):
|
|
if random.randrange(8) != 0:
|
|
length = random.randint(1, byte_lanes*16)
|
|
payload = bytearray(itertools.islice(itertools.cycle(range(256)), length))
|
|
|
|
eth = Ether(src='5A:51:52:53:54:55', dst='DA:D1:D2:D3:D4:D5', type=0x8000)
|
|
test_pkt = eth / (cur_id.to_bytes(2, 'big') + payload)
|
|
test_pkts.append((cur_id, test_pkt.copy()))
|
|
dest = cur_id | (0 << src_shift)
|
|
else:
|
|
length = random.randint(1, 18)
|
|
payload = bytearray(itertools.islice(itertools.cycle(range(256)), length))
|
|
|
|
eth = Ether(src='5A:51:52:53:54:55', dst='01:80:C2:00:00:01', type=0x8808)
|
|
test_pkt = eth / (cur_id.to_bytes(2, 'big') + payload)
|
|
test_pkts.append((cur_id, test_pkt.copy()))
|
|
dest = cur_id | (1 << src_shift)
|
|
|
|
test_frame = AxiStreamFrame(bytes(test_pkt))
|
|
test_frame.tid = cur_id
|
|
test_frame.tdest = dest
|
|
|
|
await tb.source.send(test_frame)
|
|
|
|
cur_id = (cur_id + 1) % max_count
|
|
|
|
for cur_id, test_pkt in test_pkts:
|
|
rx_frame = await tb.sink.recv()
|
|
|
|
assert rx_frame.tdata == bytes(test_pkt)
|
|
assert rx_frame.tid == cur_id
|
|
assert (rx_frame.tdest & count_mask) == cur_id
|
|
|
|
if rx_frame.tdest >> src_shift:
|
|
assert rx_frame.tuser
|
|
|
|
rx_pkt = await tb.recv_mcf()
|
|
|
|
tb.log.info("RX packet: %s", repr(rx_pkt))
|
|
|
|
# check prefix as padding may be different
|
|
assert bytes(rx_pkt).find(bytes(test_pkt)) == 0
|
|
else:
|
|
assert not rx_frame.tuser
|
|
|
|
for k in range(1000):
|
|
await RisingEdge(dut.clk)
|
|
|
|
assert tb.sink.empty()
|
|
assert tb.mcf_sink.empty()
|
|
|
|
await RisingEdge(dut.clk)
|
|
await RisingEdge(dut.clk)
|
|
|
|
|
|
def cycle_pause():
|
|
return itertools.cycle([1, 1, 1, 0])
|
|
|
|
|
|
def size_list():
|
|
return list(range(1, 128)) + [512, 1514, 9214] + [60]*10
|
|
|
|
|
|
def mcf_size_list():
|
|
return list(range(1, 19))
|
|
|
|
|
|
def incrementing_payload(length):
|
|
return bytes(itertools.islice(itertools.cycle(range(256)), length))
|
|
|
|
|
|
if cocotb.SIM_NAME:
|
|
|
|
factory = TestFactory(run_test_data)
|
|
factory.add_option("payload_lengths", [size_list])
|
|
factory.add_option("payload_data", [incrementing_payload])
|
|
factory.add_option("idle_inserter", [None, cycle_pause])
|
|
factory.add_option("backpressure_inserter", [None, cycle_pause])
|
|
factory.generate_tests()
|
|
|
|
factory = TestFactory(run_test_mcf)
|
|
factory.add_option("payload_lengths", [mcf_size_list])
|
|
factory.add_option("payload_data", [incrementing_payload])
|
|
factory.add_option("idle_inserter", [None, cycle_pause])
|
|
factory.add_option("backpressure_inserter", [None, cycle_pause])
|
|
factory.generate_tests()
|
|
|
|
factory = TestFactory(run_test_tuser_assert)
|
|
factory.generate_tests()
|
|
|
|
factory = TestFactory(run_test_mcf_filter)
|
|
factory.generate_tests()
|
|
|
|
factory = TestFactory(run_stress_test)
|
|
factory.add_option("idle_inserter", [None, cycle_pause])
|
|
factory.add_option("backpressure_inserter", [None, cycle_pause])
|
|
factory.generate_tests()
|
|
|
|
|
|
# cocotb-test
|
|
|
|
tests_dir = os.path.abspath(os.path.dirname(__file__))
|
|
rtl_dir = os.path.abspath(os.path.join(tests_dir, '..', '..', 'rtl'))
|
|
lib_dir = os.path.abspath(os.path.join(rtl_dir, '..', 'lib'))
|
|
axis_rtl_dir = os.path.abspath(os.path.join(lib_dir, 'axis', 'rtl'))
|
|
|
|
|
|
@pytest.mark.parametrize("data_width", [8, 16, 32, 64, 128, 256, 512])
|
|
def test_mac_ctrl_rx(request, data_width):
|
|
dut = "mac_ctrl_rx"
|
|
module = os.path.splitext(os.path.basename(__file__))[0]
|
|
toplevel = dut
|
|
|
|
verilog_sources = [
|
|
os.path.join(rtl_dir, f"{dut}.v"),
|
|
]
|
|
|
|
parameters = {}
|
|
|
|
parameters['DATA_WIDTH'] = data_width
|
|
parameters['KEEP_ENABLE'] = int(parameters['DATA_WIDTH'] > 8)
|
|
parameters['KEEP_WIDTH'] = parameters['DATA_WIDTH'] // 8
|
|
parameters['ID_ENABLE'] = 1
|
|
parameters['ID_WIDTH'] = 8
|
|
parameters['DEST_ENABLE'] = 1
|
|
parameters['DEST_WIDTH'] = 8
|
|
parameters['USER_WIDTH'] = 1
|
|
parameters['USE_READY'] = 1
|
|
parameters['MCF_PARAMS_SIZE'] = 18
|
|
|
|
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(
|
|
python_search=[tests_dir],
|
|
verilog_sources=verilog_sources,
|
|
toplevel=toplevel,
|
|
module=module,
|
|
parameters=parameters,
|
|
sim_build=sim_build,
|
|
extra_env=extra_env,
|
|
)
|