litex/misoclib/com/liteeth/mac/__init__.py

34 lines
1.4 KiB
Python

from misoclib.com.liteeth.common import *
from misoclib.com.liteeth.generic import *
from misoclib.com.liteeth.mac.common import *
from misoclib.com.liteeth.mac.core import LiteEthMACCore
from misoclib.com.liteeth.mac.frontend.wishbone import LiteEthMACWishboneInterface
class LiteEthMAC(Module, AutoCSR):
def __init__(self, phy, dw, interface="crossbar", endianness="big",
with_hw_preamble_crc=True):
self.submodules.core = LiteEthMACCore(phy, dw, endianness, with_hw_preamble_crc)
self.csrs = []
if interface == "crossbar":
self.submodules.crossbar = LiteEthMACCrossbar()
self.submodules.packetizer = LiteEthMACPacketizer()
self.submodules.depacketizer = LiteEthMACDepacketizer()
self.comb += [
Record.connect(self.crossbar.master.source, self.packetizer.sink),
Record.connect(self.packetizer.source, self.core.sink),
Record.connect(self.core.source, self.depacketizer.sink),
Record.connect(self.depacketizer.source, self.crossbar.master.sink)
]
elif interface == "wishbone":
self.submodules.interface = LiteEthMACWishboneInterface(dw, 2, 2)
self.comb += Port.connect(self.interface, self.core)
self.ev, self.bus = self.interface.sram.ev, self.interface.bus
self.csrs = self.interface.get_csrs() + self.core.get_csrs()
elif interface == "dma":
raise NotImplementedError
else:
raise ValueError(interface + " not supported by LiteEthMac!")
def get_csrs(self):
return self.csrs