from liteeth.common import * from liteeth.mac.common import * class LiteEthMACTXLastBE(Module): def __init__(self, dw): self.sink = sink = Sink(eth_mac_description(dw)) self.source = source = Source(eth_phy_description(dw)) ### ongoing = Signal() self.sync += \ If(sink.stb & sink.ack, If(sink.sop, ongoing.eq(1) ).Elif(sink.last_be, ongoing.eq(0) ) ) self.comb += [ source.stb.eq(sink.stb & (sink.sop | ongoing)), source.sop.eq(sink.sop), source.eop.eq(sink.last_be), source.data.eq(sink.data), sink.ack.eq(source.ack) ] class LiteEthMACRXLastBE(Module): def __init__(self, dw): self.sink = sink = Sink(eth_phy_description(dw)) self.source = source = Source(eth_mac_description(dw)) ### self.comb += [ source.stb.eq(sink.stb), source.sop.eq(sink.sop), source.eop.eq(sink.eop), source.data.eq(sink.data), source.last_be.eq(sink.eop), sink.ack.eq(source.ack) ]