litex/misoclib/com/liteeth/frontend/etherbone/__init__.py

from misoclib.com.liteeth.common import *
from misoclib.com.liteeth.frontend.etherbone.packet import *
from misoclib.com.liteeth.frontend.etherbone.probe import *
from misoclib.com.liteeth.frontend.etherbone.record import *
from misoclib.com.liteeth.frontend.etherbone.wishbone import *


class LiteEthEtherbone(Module):
    def __init__(self, udp, udp_port):
        # decode/encode etherbone packets
        self.submodules.packet = packet = LiteEthEtherbonePacket(udp, udp_port)

        # packets can be probe (etherbone discovering) or records with
        # writes and reads
        self.submodules.probe = probe = LiteEthEtherboneProbe()
        self.submodules.record = record = LiteEthEtherboneRecord()

        # arbitrate/dispatch probe/records packets
        dispatcher = Dispatcher(packet.source, [probe.sink, record.sink])
        self.comb += dispatcher.sel.eq(~packet.source.pf)
        arbiter = Arbiter([probe.source, record.source], packet.sink)
        self.submodules += dispatcher, arbiter

        # create mmap ŵishbone master
        self.submodules.master = master = LiteEthEtherboneWishboneMaster()
        self.comb += [
            Record.connect(record.receiver.source, master.sink),
            Record.connect(master.source, record.sender.sink)
        ]