from migen.fhdl.std import * from migen.bus import wishbone from migen.bus.transactions import * from migen.sim.generic import run_simulation from misoclib.com.liteeth.common import * from misoclib.com.liteeth.core import LiteEthUDPIPCore from misoclib.com.liteeth.test.common import * from misoclib.com.liteeth.test.model import phy, mac, arp, ip, udp ip_address = 0x12345678 mac_address = 0x12345678abcd class TB(Module): def __init__(self, dw=8): self.dw = dw self.submodules.phy_model = phy.PHY(8, debug=False) self.submodules.mac_model = mac.MAC(self.phy_model, debug=False, loopback=False) self.submodules.arp_model = arp.ARP(self.mac_model, mac_address, ip_address, debug=False) self.submodules.ip_model = ip.IP(self.mac_model, mac_address, ip_address, debug=False, loopback=False) self.submodules.udp_model = udp.UDP(self.ip_model, ip_address, debug=False, loopback=True) self.submodules.core = LiteEthUDPIPCore(self.phy_model, mac_address, ip_address, 100000) udp_port = self.core.udp.crossbar.get_port(0x5678, dw) self.submodules.streamer = PacketStreamer(eth_udp_user_description(dw)) self.submodules.logger = PacketLogger(eth_udp_user_description(dw)) self.comb += [ Record.connect(self.streamer.source, udp_port.sink), udp_port.sink.ip_address.eq(0x12345678), udp_port.sink.src_port.eq(0x1234), udp_port.sink.dst_port.eq(0x5678), udp_port.sink.length.eq(64//(dw//8)), Record.connect(udp_port.source, self.logger.sink) ] # use sys_clk for each clock_domain self.clock_domains.cd_eth_rx = ClockDomain() self.clock_domains.cd_eth_tx = ClockDomain() self.comb += [ self.cd_eth_rx.clk.eq(ClockSignal()), self.cd_eth_rx.rst.eq(ResetSignal()), self.cd_eth_tx.clk.eq(ClockSignal()), self.cd_eth_tx.rst.eq(ResetSignal()), ] def gen_simulation(self, selfp): selfp.cd_eth_rx.rst = 1 selfp.cd_eth_tx.rst = 1 yield selfp.cd_eth_rx.rst = 0 selfp.cd_eth_tx.rst = 0 for i in range(100): yield while True: packet = Packet([i for i in range(64//(self.dw//8))]) yield from self.streamer.send(packet) yield from self.logger.receive() # check results s, l, e = check(packet, self.logger.packet) print("shift "+ str(s) + " / length " + str(l) + " / errors " + str(e)) if __name__ == "__main__": run_simulation(TB(8), ncycles=2048, vcd_name="my.vcd", keep_files=True) run_simulation(TB(16), ncycles=2048, vcd_name="my.vcd", keep_files=True) run_simulation(TB(32), ncycles=2048, vcd_name="my.vcd", keep_files=True)