Re: [PATCH v10 3/8] PCI: dwc: Advertise dynamic inbound mapping support

Christian Bruel
2026-03-16T12:41:38Z

Hi Koichiro,

>
> If I understood the problem correctly, would something like the patch below
> address it? My expectation is that the subrange mapping test would then fail
> consistently on platforms that do not have enough free IB iATU regions.
>

Thank you for your patch. Yes, now the bar subrange tests fail
consistently, so that is enough to say this is not a regression.

However, I think there was a clear BAR missing somewhere before running
the tests in the EPF driver, as the BARs could be reallocated during the
other tests. This is not due to the subrange tests, but the EPF test
driver supposes a 1:1 BAR/ATU mapping. Now this assumption is broken.
I'm wondering if this could be improved to make the subrange tests pass
on all platforms

Cheers

Christian