On Mon, Mar 22, 2021 at 03:15:03PM +0000, Russell King - ARM Linux admin wrote:
It gets worse than that though - due to a change to remove pcibios_min_io from the generic code, moving it into the ARM architecture code, this has caused a regression that prevents the legacy resources being registered against the bus resource. So even if they are there, they cause probe failures. I haven't found a reasonable way to solve this yet, but until there is, there is no way that the PATA driver can be used as the "legacy mode" support is effectively done via the PCI code assigning virtual IO port resources. I'm quite surprised that the CY82C693 even works on Alpha - I've asked for a lspci for that last week but nothing has yet been forthcoming from whoever responded to your patch for Alpha - so I can't compare what I'm seeing with what's happening with Alpha.
That sounds like something we could fix with a quirk for function 2 in the PCI resource assignment code. Can you show what vendor and device ID function 2 has so that I could try to come up with one?
