Re: PCI Express support for 2.4 kernel

[Vladimir Kondratiev]

Greg KH wrote:

> > Hi,
> > PCI-Express platforms will soon appear on the market. It is worth to
> > support it.
> >    
>
> Yes it is worth it, any chance to get access to hardware to test this
> out on?
>  
If it were up to me, I will give away full specs and test platforms. But 
it is not...

> No, we need to get this into 2.6 first.  Can you please forward port
> this to 2.6, clean up the formatting and address the issues everyone
> else has made so far and post it?
>  
I will. It take some time, I did not installed 2.6 yet.

> > * command line argument "pci=exp" to force PCI Express, similar to "conf1" and "conf2"
> >    
>
> We should be able to do this automatically, and not force this on the
> boot command line, correct?
>  
Yes. Default is autodetect. Command line is to suppress autodetection.

> How about information on how to detect it as per chipset type?  We need
> to do this automatically some how.
> + * 
> + * There is no standard method to recognize presence of PCI Express,
>  
>
>
> Are you sure?  I thought there was (don't have my spec in front of me
> right now...)
>  
I thought this way also. But I found that it is not. You may know 
several chipsets,
and do per-chipset stuff, but there is no generic procedure. At least 
authors of PCI-E
don't know (it is nice to have access to the authors ;-) ).

Vladimir.

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