58 lines
1.8 KiB
Python
58 lines
1.8 KiB
Python
#
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# This file is part of LiteEth.
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#
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# Copyright (c) 2015-2021 Florent Kermarrec <florent@enjoy-digital.fr>
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# SPDX-License-Identifier: BSD-2-Clause
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from liteeth.common import *
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from liteeth.crossbar import LiteEthCrossbar
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from liteeth.packet import Depacketizer, Packetizer
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# MAC Packetizer/Depacketizer ----------------------------------------------------------------------
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class LiteEthMACDepacketizer(Depacketizer):
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def __init__(self, dw):
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Depacketizer.__init__(self,
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eth_phy_description(dw),
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eth_mac_description(dw),
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mac_header)
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class LiteEthMACPacketizer(Packetizer):
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def __init__(self, dw):
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Packetizer.__init__(self,
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eth_mac_description(dw),
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eth_phy_description(dw),
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mac_header)
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# MAC Ports ----------------------------------------------------------------------------------------
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class LiteEthMACMasterPort:
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def __init__(self, dw):
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self.source = stream.Endpoint(eth_mac_description(dw))
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self.sink = stream.Endpoint(eth_mac_description(dw))
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class LiteEthMACSlavePort:
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def __init__(self, dw):
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self.sink = stream.Endpoint(eth_mac_description(dw))
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self.source = stream.Endpoint(eth_mac_description(dw))
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class LiteEthMACUserPort(LiteEthMACSlavePort):
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def __init__(self, dw):
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LiteEthMACSlavePort.__init__(self, dw)
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class LiteEthMACCrossbar(LiteEthCrossbar):
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def __init__(self, dw=8):
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LiteEthCrossbar.__init__(self, LiteEthMACMasterPort, "ethernet_type", dw)
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def get_port(self, ethernet_type, dw=8):
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port = LiteEthMACUserPort(dw)
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if ethernet_type in self.users.keys():
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raise ValueError("Ethernet type {0:#x} already assigned".format(ethernet_type))
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self.users[ethernet_type] = port
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return port
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