Re: Please revert: PCI: fix IDE legacy mode resources

Yoichi Yuasa
2007-12-06T05:58:37Z

On Thu, 06 Dec 2007 16:04:07 +1100
Benjamin Herrenschmidt <benh@kernel.crashing.org> wrote:

>
> On Thu, 2007-12-06 at 13:34 +0900, Yoichi Yuasa wrote:
> > > I don't understand how his fix can work on MIPS nor why the previous
> > > code didn't, but I don't know how MIPS does its remapping tricks,
> > > however it will definitely -not- work on powerpc (and will break a
> > > couple of machines out there).
> >
> > MIPS pcibios_fixup_bus() converts RAW BAR values(including offset) to
> > resource values. How does it fix up on powerpc?
>
> Same thing. We expect resources to contain raw values before .

Same.

> What I don't understand is thus why you are calling resource_to_bus on 0x1f0
> which is -not- a resource value, but is already a BAR value...

0x1f0 is resource value on MIPS Cobalt.
All RAW BAR values contain the offset(0x10000000) on it.

Do the BAR values on your target contain the offset?

Yoichi