On Mon, Mar 22, 2021 at 04:18:23PM +0100, Christoph Hellwig wrote: > 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? I already have a quirk in arch/arm/kernel/bios32.c for this - but it is no longer sufficient due to changes in the PCI layer, where much of this is documented. -- RMK's Patch system: https://www.armlinux.org.uk/developer/patches/ FTTP is here! 40Mbps down 10Mbps up. Decent connectivity at last!
