On Dec 2, 2007, at 12:20 PM, Frank Wille wrote:

> Hi!
>
> While reading the source for powerpc/pci/pcib.c I wondered about  
> the direct
> access to register offset 0x40 and 0x60 in PCI configuration space.  
> I compared
> the docs of various PCI-ISA bridges and those registers have different
> meaning!
>
> Maybe this is 83C553F-specific?
>
> I would suggest to implement a call to a machine-dependant hook- 
> function in
> pcibattach(). Port-prep already inserted some code there with  
> #ifdef prep ...
>

Anything >= 0x40 is chip-specific.