Re: [Qemu-devel] [PATCH] PPC: fix PCI configuration space MemoryRegions for grackle/uninorth

[Benjamin Herrenschmidt]

On Wed, 2013-12-18 at 13:34 +0100, Alexander Graf wrote:
> Hrm. Are you 100% sure this correct? This UniNorth is a real headache.
> The closest thing to a spec for it is the U4 spec which is generations
> ahead:
> 
>   http://www.datasheetarchive.com/dl/Datasheets-SW3/DSASW0048084.pdf
> 
> On that at page 109 you can see that you do indeed have a range of
> registers and a few fancy modes that can even be used to directly
> access config space registers without the usual index/data cycle.
> 
> Ben, do you have any more insight into how the original Uninorth
> worked?

Just index/data. Look at Linux :-)

Cheers,
Ben.