USB, PCI and registers

[Benjamin Herrenschmidt]

On Sat, Jul 29, 1939,  <> wrote:

>I'm a bit confused as to why pci.c would have base_address[6] as a 
>member to start with - and just as confused as to why there would
>be a difference between architectures.  
>
>Anyone have any comments that might help clarify this confusion?

Those base addresses correspond to the base-addresses registers of the
board's configuration space. If a given PCI chip uses the 5th register,
then the driver must look for base_addresses[4], that's logical. They are
not assigned in any special order: which register to use depends on the
hw implementation and can make HW that uses the 2nd and 3rd registers and
not the fist, for example.

-- 
           E-Mail: <mailto:bh40 at calva.net>
BenH.      Web   : <http://calvaweb.calvacom.fr/bh40/>





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