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🐛 fix buskeeper timeout error #315

Merged
merged 3 commits into from
May 16, 2022
Merged

🐛 fix buskeeper timeout error #315

merged 3 commits into from
May 16, 2022

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stnolting
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@stnolting stnolting commented May 12, 2022

Fixes #314. @GideonZ

The BUSKEEPER raises an internal timeout error if an external access (via Wishbone) has the same access latency as there are maximum internal timeout cycles (max_proc_int_response_time_c).

buskeeper raises an internal timeout error if an *external* access (via Wishbone) has the same access latency as there are maximum _internal_ timeout cycles
@stnolting stnolting added bug Something isn't working HW hardware-related labels May 12, 2022
@stnolting stnolting self-assigned this May 12, 2022
* stop timeout counter when it has reached zero
* optimized size of timeout counter (1 bit less)
@stnolting stnolting marked this pull request as ready for review May 13, 2022 15:25
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I think this is ready to be merged. What do you think @GideonZ?

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GideonZ commented May 16, 2022 via email

@stnolting
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Yes, I think you can safely merge this fix. It solves the crashes I was
seeing. [...] But aside from that, this fix is very important, so please go
ahead and merge it.

👍

I am still a bit confused to see the err_i signals fire during
normal operation. It makes it a bit difficult to trigger on such a fault in
SignalTap.

Hmm, that's strange. Do you see this just during accesses via the external memory interface?

@stnolting stnolting merged commit e0640c8 into main May 16, 2022
@stnolting stnolting deleted the hotfix_buskeeper branch May 16, 2022 21:11
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Bus_keeper module incorrectly generates bus errors
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