On Sat, 30 Aug 2008, Linus Torvalds wrote:

quoted text
>

> We simply shouldn't try to compare the BAR start with randomly chosen

> things.

Btw, looking at that bogus BAR#3 some more: I don't actually think it's

even an MCFG resource.
I think it's literally the resource that describes the HT window for the

host bridge. So it's literally like the "root" resource - all external

MMIO resources that go over HT have to be in that window.
IOW, I'm starting to think that it's not even broken. It is probably

perfectly real. It's not a "PCI bridge" in the sense that it doesn't

bridge one PCI bus to another, but it's a host bridge, and it bridges the

CPU memory accesses to another bus. 
The fact that the MCFG area happens to be at the start of that window is

probably just a random detail.
Does anybody know how to find chipset docs for AMD/ATI chipsets? I find

CPU docs, and the GPU docs, but not the 790 chipset docs anywhere (yeah,

it looks promising with a link that says "AMD 790FX Chipset

Specifications", but the link just takes you to some trivial overview, not

any actual specs.
Anybody?
			Linus

--

unsubscribe notice
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in

the body of a message to majordomo@vger.kernel.org

More majordomo info at  http://vger.kernel.org/majordomo-info.html

Please read the FAQ at  http://www.tux.org/lkml/