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