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Each completion queue contains 2-cycle burst valid signal #78

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zhenhaohe opened this issue Sep 29, 2024 · 3 comments
Open

Each completion queue contains 2-cycle burst valid signal #78

zhenhaohe opened this issue Sep 29, 2024 · 3 comments
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@zhenhaohe
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Hi all,

Recently I found a potential bug with the completion queue of Coyote. Each compeletion of the request comes with a 2-cycle burst valid signal instead of a 1-cycle valid.

@maximilianheer
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Hi @zhenhaohe or @quetric, can we maybe get a bit more context on this issue? Which scenario, which busses are we talking about? Do you maybe even have a screenshot of waveforms or something like this?

@quetric
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quetric commented Oct 9, 2024

This bug is observed on the cq_wr bus. I don't have a screenshot of waveforms, but the context is that after a write request is issued on sq_wr, we are observing cq_wr for a completion. The bug is that instead of TVALID staying high for 1 cycle to signal a completion, it stays high for 2 consecutive cycles.

@maximilianheer
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Hi @quetric, thanks a lot for the clarification. We'll be looking into it.

@bo3z bo3z added the bug Something isn't working label Oct 22, 2024
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