PCI Hotplug Slot Naming Scheme

[John Rose]

Don't we already do that?  The problem is directories with 48 character
names.

Thanks-
John

On Fri, 2004-03-26 at 11:29, Linda Xie wrote:
> We can keep symlinks between "bus ids" and "loc-codes" and create
> symlinks look like,
> 0001:00:02.6 --> U7311.D11.104CE9A-P1-C1, So our tools can still use
> "loc-codes".
>
> Thoughts?
>
> Thanks,
>
> Linda
>
> Inactive hide details for
> garyhade at us.ltcfwd.linux.ibm.comgaryhade@us.ltcfwd.linux.ibm.com
>
>
>
>
>                                 garyhade at us.ltcfwd.linux.ibm.com
>                                 Sent by: owner-linuxppc64-dev at lists.linuxppc.org
>
>                                 03/26/04 11:10 AM
>
>
>
>
>
> To: John Rose
> <johnrose at austin.ibm.com>
> cc: External List
> <linuxppc64-dev at lists.linuxppc.org>
> Subject: Re: PCI
> Hotplug Slot Naming
> Scheme
>
>
> John,
> The 'acpiphp' ACPI PCI hotplug driver uses a simple 1,2,3,...
> slot directory naming scheme with the longer linux-style
> names stored in an 'address' files within each slot directory.
>
> If you changed to this simplified slot directory naming
> scheme you could store both styles in separate files within
> each slot directory.
>
> Gary
>
> --
> Gary Hade
> IBM Linux Technology Center
> 503-578-4503  IBM T/L: 775-4503
> garyhade at us.ibm.com
> http://www.ibm.com/linux/ltc
>
> On Fri, Mar 26, 2004 at 10:31:38AM -0600, John Rose wrote:
> >
> > Opinions requested.  The PCI Hotplug module currently uses IBM-style
> bus
> > names when naming the PCI Hotplug slots.  These are registered as
> kobjects,
> > and represented by sysfs directories.
> >
> > For a particular new hardware platform, to remain unnamed :), a
> firmware guy
> > tells us these names can be up to 48 chars long.  We have been
> dealing with
> > 10 character slot names up to this point.  Our options moving
> forward are
> >
> > 1) Continue to use ibm slot names, for which the hotplug directory
> could
> >    look like:
> >
> >    # ls /sys/bus/pci/slots
> >    ..   U7311.D11.104CE9A-P1-C1  U7879.001.DQD0027-P1-C2
> >    U7311.D11.104CE9A-P1-C2  U7879.001.DQD0027-P1-C3
> >    U7311.D11.104CE9A-P1-C3  U7879.001.DQD0027-P1-C4
> >    U7311.D11.104CE9A-P1-C5  U7879.001.DQD0027-P1-C5
> >    U7311.D11.104CE9A-P1-C6  U7879.001.DQD0027-P1-C6
> >    U7311.D11.104CE9A-P1-C7  U9117.570.104F3DC-V1-C0
> >
> >    These are just 23 chars long, imagine 48.
> >
> > 2) Use linux-style bus names, as in xxxx:xx:xx:x.  This is more
> consistent
> >    with other PCI Hotplug implementations, and the names are always
> 12 chars
> >    long.
> >
> > Although it's late in the game to be asking such questions, we'd
> rather change
> > things now if necessary than after this functionality ships.
> Thoughts?
> >
> > Thanks-
> > John
> >
> >
> >
>
>


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