liteeth/test/etherbone_tb.py

   1 from migen.fhdl.std import *
   2 from migen.bus import wishbone
   3 from migen.bus.transactions import *
   4 from migen.sim.generic import run_simulation
   5
   6 from liteeth.common import *
   7 from liteeth.core import LiteEthUDPIPCore
   8 from liteeth.core.etherbone import LiteEthEtherbone
   9
  10 from liteeth.test.common import *
  11 from liteeth.test.model import phy, mac, arp, ip, udp, etherbone
  12
  13 ip_address = 0x12345678
  14 mac_address = 0x12345678abcd
  15
  16 class TB(Module):
  17         def __init__(self):
  18                 self.submodules.phy_model = phy.PHY(8, debug=True)
  19                 self.submodules.mac_model = mac.MAC(self.phy_model, debug=True, loopback=False)
  20                 self.submodules.arp_model = arp.ARP(self.mac_model, mac_address, ip_address, debug=False)
  21                 self.submodules.ip_model = ip.IP(self.mac_model, mac_address, ip_address, debug=True, loopback=False)
  22                 self.submodules.udp_model = udp.UDP(self.ip_model, ip_address, debug=True, loopback=False)
  23                 self.submodules.etherbone_model = etherbone.Etherbone(self.udp_model, debug=True)
  24
  25                 self.submodules.core = LiteEthUDPIPCore(self.phy_model, mac_address, ip_address, 100000)
  26                 self.submodules.etherbone = LiteEthEtherbone(self.core.udp, 20000)
  27
  28                 # use sys_clk for each clock_domain
  29                 self.clock_domains.cd_eth_rx = ClockDomain()
  30                 self.clock_domains.cd_eth_tx = ClockDomain()
  31                 self.comb += [
  32                         self.cd_eth_rx.clk.eq(ClockSignal()),
  33                         self.cd_eth_rx.rst.eq(ResetSignal()),
  34                         self.cd_eth_tx.clk.eq(ClockSignal()),
  35                         self.cd_eth_tx.rst.eq(ResetSignal()),
  36                 ]
  37
  38         def gen_simulation(self, selfp):
  39                 selfp.cd_eth_rx.rst = 1
  40                 selfp.cd_eth_tx.rst = 1
  41                 yield
  42                 selfp.cd_eth_rx.rst = 0
  43                 selfp.cd_eth_tx.rst = 0
  44
  45                 for i in range(100):
  46                         yield
  47
  48                 # test probe
  49                 packet = etherbone.EtherbonePacket()
  50                 packet.pf = 1
  51                 self.etherbone_model.send(packet)
  52
  53 if __name__ == "__main__":
  54         run_simulation(TB(), ncycles=1024, vcd_name="my.vcd", keep_files=True)