Re: [PATCH] of: treat PCI config space as IORESOURCE_MEM type

From: Jason Gunthorpe
Date: Fri May 30 2014 - 16:38:01 EST


On Fri, May 30, 2014 at 02:41:17AM +0100, Liviu Dudau wrote:

> Agree, I'm only concerned that if this ECAM config space gets added to
> the list of pci_host_bridge windows it will be indistinguishable from
> IORESOURCE_MEM resources and pci_create_root_bus() will add it to the
> bus and allow devices present on that bus to be assigned addresses from
> that range. Which might not be what one wants for certain BARs.

I wouldn't worry about supporting config in ranges. ECAM is the
logical use for config ranges, but it isn't specified and probably
will never be.

Will's driver the is the only driver I've seen to support ECAM and it
didn't use ranges.

Jason
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/