Pci driver can not handle multiple root complex system

[Alexander Boettcher]

Hello,

On 08.06.2013 01:13, Jilong Kuang - SISA wrote:
> I just found out current Genode pci driver does not support a system
> with multiple root complexes.

yes, this is true.
Until now we had neither the demand nor the hardware to develop for this
feature.

I suggest to open at Genode at ...197... a feature request. If you have any
insights or pointers to some public low level documentation about
multiple PCI root complexes in regards to how to use, to handle them, it
would be nice to share these information at the github feature request.

Regards,

Alex.
> 
>  
> 
> More specifically, in the bus_valid() function, it only scans all the
> devices under the first root complex (starting from bus number 0).  As a
> result, other devices under different root complexes are considered
> INVALID, thus will be skipped by pci driver code.
> 
>  
> 
> Maybe a simple patch will fix the problem.
> 
>  
> 
> Best regards,
> 
> Jilong
> 
>  
> 
>  
> 
> -- 
> *Jilong Kuang Ph.D. C.Sci. | Samsung Research America – Silicon Valley
> (SRA-SV)*
> 
> Senior Research Engineer, Computer Science Lab
> t: 408-544-2705   c: 951-318-2995
> jilong.kuang at ...60... <mailto:jilong.kuang at ...60...>
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