Re: PCI Express support for 2.4 kernel

[Vladimir Kondratiev <vladimir.kondratiev@intel.com>]

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.