[PATCH/2.6.17-rc4 1/10] Powerpc: Add general support for mpc7 448h pc2 (Taiga) platform

[Liu Dave-r63238]

> > If I really need to use bat0 or bat1( I see that the 
> general mmu use 
> > bat2 and bat3,
> > where should I set up them?
> > 
> > For tsi108 pci configuration access, I need to map 16Mbyte
> > physical address.  If I do not use an extra bat, I can not 
> get the correct 
> > virtual address use ioremap.
> 
> What do you mean ? An ioremap will work, it will give you any 
> virtual address, you just have to store that in a global 
> instead of hard coding it. Hard coded virtual addresses are 
> bad. Especially for things like PCI config space that really 
> isn't performance sensitive.
> 

I agree ben about PCI config space, It should use ioremap
 to get virtual address. No performace indeed. 

I think we need find the root cause that the ioremap failed.

Dave