#!/usr/bin/env python """ Copyright (c) 2015-2016 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 struct import zlib try: from queue import Queue except ImportError: from Queue import Queue import axis_ep import eth_ep module = 'axis_eth_fcs_insert_64' srcs = [] srcs.append("../rtl/%s.v" % module) srcs.append("../rtl/eth_crc_8.v") srcs.append("../rtl/eth_crc_16.v") srcs.append("../rtl/eth_crc_24.v") srcs.append("../rtl/eth_crc_32.v") srcs.append("../rtl/eth_crc_40.v") srcs.append("../rtl/eth_crc_48.v") srcs.append("../rtl/eth_crc_56.v") srcs.append("../rtl/eth_crc_64.v") srcs.append("test_%s_pad.v" % module) src = ' '.join(srcs) build_cmd = "iverilog -o test_%s.vvp %s" % (module, src) def dut_axis_eth_fcs_insert_64(clk, rst, current_test, input_axis_tdata, input_axis_tkeep, input_axis_tvalid, input_axis_tready, input_axis_tlast, input_axis_tuser, output_axis_tdata, output_axis_tkeep, output_axis_tvalid, output_axis_tready, output_axis_tlast, output_axis_tuser, busy): if os.system(build_cmd): raise Exception("Error running build command") return Cosimulation("vvp -m myhdl test_%s.vvp -lxt2" % module, clk=clk, rst=rst, current_test=current_test, input_axis_tdata=input_axis_tdata, input_axis_tkeep=input_axis_tkeep, input_axis_tvalid=input_axis_tvalid, input_axis_tready=input_axis_tready, input_axis_tlast=input_axis_tlast, input_axis_tuser=input_axis_tuser, output_axis_tdata=output_axis_tdata, output_axis_tkeep=output_axis_tkeep, output_axis_tvalid=output_axis_tvalid, output_axis_tready=output_axis_tready, output_axis_tlast=output_axis_tlast, output_axis_tuser=output_axis_tuser, busy=busy) def bench(): # Parameters ENABLE_PADDING = 1 MIN_FRAME_LENGTH = 64 # Inputs clk = Signal(bool(0)) rst = Signal(bool(0)) current_test = Signal(intbv(0)[8:]) input_axis_tdata = Signal(intbv(0)[64:]) input_axis_tkeep = Signal(intbv(0)[8:]) input_axis_tvalid = Signal(bool(0)) input_axis_tlast = Signal(bool(0)) input_axis_tuser = Signal(bool(0)) output_axis_tready = Signal(bool(0)) # Outputs input_axis_tready = Signal(bool(0)) output_axis_tdata = Signal(intbv(0)[64:]) output_axis_tkeep = Signal(intbv(0)[8:]) output_axis_tvalid = Signal(bool(0)) output_axis_tlast = Signal(bool(0)) output_axis_tuser = Signal(bool(0)) busy = Signal(bool(0)) # sources and sinks source_queue = Queue() source_pause = Signal(bool(0)) sink_queue = Queue() sink_pause = Signal(bool(0)) source = axis_ep.AXIStreamSource(clk, rst, tdata=input_axis_tdata, tkeep=input_axis_tkeep, tvalid=input_axis_tvalid, tready=input_axis_tready, tlast=input_axis_tlast, tuser=input_axis_tuser, fifo=source_queue, pause=source_pause, name='source') sink = axis_ep.AXIStreamSink(clk, rst, tdata=output_axis_tdata, tkeep=output_axis_tkeep, tvalid=output_axis_tvalid, tready=output_axis_tready, tlast=output_axis_tlast, tuser=output_axis_tuser, fifo=sink_queue, pause=sink_pause, name='sink') # DUT dut = dut_axis_eth_fcs_insert_64(clk, rst, current_test, input_axis_tdata, input_axis_tkeep, input_axis_tvalid, input_axis_tready, input_axis_tlast, input_axis_tuser, output_axis_tdata, output_axis_tkeep, output_axis_tvalid, output_axis_tready, output_axis_tlast, output_axis_tuser, busy) @always(delay(4)) def clkgen(): clk.next = not clk def wait_normal(): while input_axis_tvalid or output_axis_tvalid: yield clk.posedge def wait_pause_source(): while input_axis_tvalid or output_axis_tvalid: source_pause.next = True yield clk.posedge yield clk.posedge yield clk.posedge source_pause.next = False yield clk.posedge def wait_pause_sink(): while input_axis_tvalid or output_axis_tvalid: sink_pause.next = True yield clk.posedge yield clk.posedge yield clk.posedge sink_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 for payload_len in list(range(1,18))+list(range(40,58)): yield clk.posedge print("test 1: test packet, length %d" % payload_len) current_test.next = 1 test_frame = eth_ep.EthFrame() test_frame.eth_dest_mac = 0xDAD1D2D3D4D5 test_frame.eth_src_mac = 0x5A5152535455 test_frame.eth_type = 0x8000 test_frame.payload = bytearray(range(payload_len)) test_frame.update_fcs() axis_frame = test_frame.build_axis() for wait in wait_normal, wait_pause_source, wait_pause_sink: source_queue.put(axis_frame) yield clk.posedge yield clk.posedge yield wait() yield clk.posedge yield clk.posedge yield clk.posedge rx_frame = None if not sink_queue.empty(): rx_frame = sink_queue.get() eth_frame = eth_ep.EthFrame() eth_frame.parse_axis_fcs(rx_frame) print(hex(eth_frame.eth_fcs)) print(hex(eth_frame.calc_fcs())) assert len(eth_frame.payload.data) == max(payload_len, 46) assert eth_frame.eth_fcs == eth_frame.calc_fcs() assert eth_frame.eth_dest_mac == test_frame.eth_dest_mac assert eth_frame.eth_src_mac == test_frame.eth_src_mac assert eth_frame.eth_type == test_frame.eth_type assert eth_frame.payload.data.index(test_frame.payload.data) == 0 assert sink_queue.empty() yield delay(100) yield clk.posedge print("test 2: back-to-back packets, length %d" % payload_len) current_test.next = 2 test_frame1 = eth_ep.EthFrame() test_frame1.eth_dest_mac = 0xDAD1D2D3D4D5 test_frame1.eth_src_mac = 0x5A5152535455 test_frame1.eth_type = 0x8000 test_frame1.payload = bytearray(range(payload_len)) test_frame1.update_fcs() test_frame2 = eth_ep.EthFrame() test_frame2.eth_dest_mac = 0xDAD1D2D3D4D5 test_frame2.eth_src_mac = 0x5A5152535455 test_frame2.eth_type = 0x8000 test_frame2.payload = bytearray(range(payload_len)) test_frame2.update_fcs() axis_frame1 = test_frame1.build_axis() axis_frame2 = test_frame2.build_axis() for wait in wait_normal, wait_pause_source, wait_pause_sink: source_queue.put(axis_frame1) source_queue.put(axis_frame2) yield clk.posedge yield clk.posedge yield wait() yield clk.posedge yield clk.posedge yield clk.posedge rx_frame = None if not sink_queue.empty(): rx_frame = sink_queue.get() eth_frame = eth_ep.EthFrame() eth_frame.parse_axis_fcs(rx_frame) print(hex(eth_frame.eth_fcs)) print(hex(eth_frame.calc_fcs())) assert len(eth_frame.payload.data) == max(payload_len, 46) assert eth_frame.eth_fcs == eth_frame.calc_fcs() assert eth_frame.eth_dest_mac == test_frame1.eth_dest_mac assert eth_frame.eth_src_mac == test_frame1.eth_src_mac assert eth_frame.eth_type == test_frame1.eth_type assert eth_frame.payload.data.index(test_frame1.payload.data) == 0 rx_frame = None if not sink_queue.empty(): rx_frame = sink_queue.get() eth_frame = eth_ep.EthFrame() eth_frame.parse_axis_fcs(rx_frame) print(hex(eth_frame.eth_fcs)) print(hex(eth_frame.calc_fcs())) assert len(eth_frame.payload.data) == max(payload_len, 46) assert eth_frame.eth_fcs == eth_frame.calc_fcs() assert eth_frame.eth_dest_mac == test_frame2.eth_dest_mac assert eth_frame.eth_src_mac == test_frame2.eth_src_mac assert eth_frame.eth_type == test_frame2.eth_type assert eth_frame.payload.data.index(test_frame2.payload.data) == 0 assert sink_queue.empty() yield delay(100) yield clk.posedge print("test 3: tuser assert, length %d" % payload_len) current_test.next = 3 test_frame1 = eth_ep.EthFrame() test_frame1.eth_dest_mac = 0xDAD1D2D3D4D5 test_frame1.eth_src_mac = 0x5A5152535455 test_frame1.eth_type = 0x8000 test_frame1.payload = bytearray(range(payload_len)) test_frame1.update_fcs() test_frame2 = eth_ep.EthFrame() test_frame2.eth_dest_mac = 0xDAD1D2D3D4D5 test_frame2.eth_src_mac = 0x5A5152535455 test_frame2.eth_type = 0x8000 test_frame2.payload = bytearray(range(payload_len)) test_frame2.update_fcs() axis_frame1 = test_frame1.build_axis() axis_frame2 = test_frame2.build_axis() axis_frame1.user = 1 for wait in wait_normal, wait_pause_source, wait_pause_sink: source_queue.put(axis_frame1) source_queue.put(axis_frame2) yield clk.posedge yield clk.posedge yield wait() yield clk.posedge yield clk.posedge yield clk.posedge rx_frame = None if not sink_queue.empty(): rx_frame = sink_queue.get() assert rx_frame.user[-1] rx_frame = None if not sink_queue.empty(): rx_frame = sink_queue.get() eth_frame = eth_ep.EthFrame() eth_frame.parse_axis_fcs(rx_frame) print(hex(eth_frame.eth_fcs)) print(hex(eth_frame.calc_fcs())) assert len(eth_frame.payload.data) == max(payload_len, 46) assert eth_frame.eth_fcs == eth_frame.calc_fcs() assert eth_frame.eth_dest_mac == test_frame2.eth_dest_mac assert eth_frame.eth_src_mac == test_frame2.eth_src_mac assert eth_frame.eth_type == test_frame2.eth_type assert eth_frame.payload.data.index(test_frame2.payload.data) == 0 assert sink_queue.empty() yield delay(100) for payload_len in list(range(1,18)): yield clk.posedge print("test 4: test short packet, length %d" % payload_len) current_test.next = 4 test_frame = bytearray(range(payload_len)) for wait in wait_normal, wait_pause_source, wait_pause_sink: source_queue.put(test_frame) yield clk.posedge yield clk.posedge yield wait() yield clk.posedge yield clk.posedge yield clk.posedge rx_frame = None if not sink_queue.empty(): rx_frame = sink_queue.get() payload = rx_frame.data[:-4] fcs = struct.unpack('