litex/misoclib/liteeth/test/icmp_tb.py

from migen.fhdl.std import *
from migen.bus import wishbone
from migen.bus.transactions import *
from migen.sim.generic import run_simulation

from misoclib.liteeth.common import *
from misoclib.liteeth.core import LiteEthIPCore

from misoclib.liteeth.test.common import *
from misoclib.liteeth.test.model.dumps import *
from misoclib.liteeth.test.model.mac import *
from misoclib.liteeth.test.model.ip import *
from misoclib.liteeth.test.model.icmp import *
from misoclib.liteeth.test.model import phy, mac, arp, ip, icmp

ip_address = 0x12345678
mac_address = 0x12345678abcd

class TB(Module):
	def __init__(self):
		self.submodules.phy_model = phy.PHY(8, debug=True)
		self.submodules.mac_model = mac.MAC(self.phy_model, debug=True, loopback=False)
		self.submodules.arp_model = arp.ARP(self.mac_model, mac_address, ip_address, debug=True)
		self.submodules.ip_model = ip.IP(self.mac_model, mac_address, ip_address, debug=True, loopback=False)
		self.submodules.icmp_model = icmp.ICMP(self.ip_model, ip_address, debug=True)

		self.submodules.ip = LiteEthIPCore(self.phy_model, mac_address, ip_address, 100000)

		# 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

		packet = MACPacket(ping_request)
		packet.decode_remove_header()
		packet = IPPacket(packet)
		packet.decode()
		packet = ICMPPacket(packet)
		packet.decode()
		self.icmp_model.send(packet)

if __name__ == "__main__":
	run_simulation(TB(), ncycles=2048, vcd_name="my.vcd", keep_files=True)