# Copyright 2021 Max Planck Institute for Software Systems, and
# National University of Singapore
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"""Validation experiment for our PCI interface by running with the builtin gem5
e1000 NIC, and then with the extracted gem5 e1000 NIC connected through
SimBricks."""

import simbricks.experiments as exp
import simbricks.nodeconfig as node
import simbricks.simulators as sim

experiments = []

for internal in [True, False]:
    if internal:
        e = exp.Experiment('pci_validation-internal')
    else:
        e = exp.Experiment('pci_validation-external')
    e.checkpoint = False

    net = sim.SwitchNet()
    e.add_network(net)

    # server
    nc_server = node.E1000LinuxNode()
    nc_server.prefix = 24
    nc_server.ip = '10.0.0.1'
    nc_server.force_mac_addr = '00:90:00:00:00:01'
    nc_server.app = node.NetperfServer()

    server = sim.Gem5Host(nc_server)
    server.name = 'server'
    e.add_host(server)

    # client
    nc_client = node.E1000LinuxNode()
    nc_client.prefix = 24
    nc_client.ip = '10.0.0.2'
    nc_client.force_mac_addr = '00:90:00:00:00:02'
    nc_client.app = node.NetperfClient()
    nc_client.app.server_ip = '10.0.0.1'
    nc_client.app.duration_tp = -1000000
    nc_client.app.duration_lat = -1000

    client = sim.Gem5Host(nc_client)
    client.name = 'client'
    client.wait = True
    e.add_host(client)

    for h in [client, server]:
        h.cpu_type = h.cpu_type_cp = 'TimingSimpleCPU'
        h.variant = 'opt'  # need opt gem5 variant with debug support
        h.extra_main_args.append((
            '--debug-flags='
            'SimBricksEthernet,SimBricksPci,EthernetAll,EthernetDesc'
        ))
        if internal:
            h.add_netdirect(net)
        else:
            nic = sim.E1000NIC()
            nic.debug = True
            nic.set_network(net)
            # force same mac address in HW as in gem5 (same default for both)
            nic.mac = '00:90:00:00:00:01'
            h.add_nic(nic)
            e.add_nic(nic)

    experiments.append(e)
