pci_bus_for_each_resource, transparent bridges and rsrc_nonstatic.c

[Dominik Brodowski]

On Mon, Mar 22, 2010 at 01:36:03PM -0700, Bjorn Helgaas wrote:
> > You can still use subtractive-decoded resources, but then you have to add
> > them to /etc/pcmcia/config.opts and run pcmcia-startup-bridges (or echo the
> > resource to a sysfs file).
> 
> It's too bad we still have such manual configuration.

Agreed.

> Is there still
> information there that we can't figure out automatically?

That's unknown to me -- are there any ISA-capable systems being sold? If so,
then I suspect the answer may be "yes".

> > Now, "usecrs" is only used on 2008-or-newer systems where we _hope_ that all
> > resource "consumers" are accounted for. So the problem might be mitigated.
> > However, I wouldn't dare to use ioports 0x0-0xff anyways for they usually
> > are used for onboard legacy devices...
> 
> Right.  But PCMCIA is at no greater risk than regular PCI, right?
> It looks like both will allocate only above PCIBIOS_MIN_IO (0x1000).

No, PCMCIA will happily allocate below this limit.

Best,
	Dominik