litex/liteeth/core/etherbone/__init__.py

from liteeth.common import *

from liteeth.generic.arbiter import Arbiter
from liteeth.generic.dispatcher import Dispatcher

from liteeth.core.etherbone.packet import *
from liteeth.core.etherbone.probe import *
from liteeth.core.etherbone.record import *
from liteeth.core.etherbone.wishbone import *

class LiteEthEtherbone(Module):
	def __init__(self, udp, udp_port):
		self.submodules.packet = packet = LiteEthEtherbonePacket(udp, udp_port)
		self.submodules.probe = probe = LiteEthEtherboneProbe()
		self.submodules.record = record = LiteEthEtherboneRecord()

		dispatcher = Dispatcher(packet.source, [probe.sink, record.sink])
		self.comb += dispatcher.sel.eq(~packet.source.pf)
		self.submodules += dispatcher

		arbiter = Arbiter([probe.source, record.source], packet.sink)
		self.submodules += arbiter

		self.submodules.wishbone = wishbone = LiteEthEtherboneWishboneMaster()
		self.comb += [
			Record.connect(record.receiver.wr_source, wishbone.wr_sink),
			Record.connect(record.receiver.rd_source, wishbone.rd_sink),
			Record.connect(wishbone.wr_source, record.sender.wr_sink),
			Record.connect(wishbone.rd_source, record.sender.rd_sink)
		]