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cxp pipeline GW: add eop marker

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morgan 2025-01-14 10:45:34 +08:00
parent ca3f6e4bba
commit 7ea3d563e6
1 changed files with 20 additions and 0 deletions
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20
src/gateware/cxp_pipeline.py
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@ -611,3 +611,23 @@ class DChar_Dropper(Module):
self.sink.ack.eq(~self.source.stb | self.source.ack),
]
class EOP_Marker(Module):
def __init__(self):
self.sink = stream.Endpoint(word_layout_dchar)
self.source = stream.Endpoint(word_layout_dchar)
# # #
self.sync += [
If((~self.source.stb | self.source.ack),
If(~((self.sink.dchar == KCode["pak_end"]) & (self.sink.dchar_k == 1)),
self.sink.connect(self.source, omit={"ack", "eop"}),
).Else(
self.source.stb.eq(0),
)
),
]
self.comb += [
self.sink.ack.eq(~self.source.stb | self.source.ack),
self.source.eop.eq(((self.sink.dchar == KCode["pak_end"]) & (self.sink.dchar_k == 1))),
]