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We have a custom IC that just had first silicon show up in our lab. It is a
multifunction device with two functions. So far we have found one problem in
the PCI interface
That problem is that the device issues a DEVSEL# for config space accesses to
all 8 possible functions. The result is that we have 2 functioning config spaces
and 6 config spaces that have read-only registers that contain 0's.
This is not a good thing, but I think it is a problem that can be lived with.
The BARs return all 0's when read so the system won't allocate any space to
the 6 extra devices, and we won't conflict with any other config spaces.
Does anyone see a problem with not spending the time and money on fixing this
if it remains that only bug?