Re: [PATCH 0/5][RFC] Physical PCI slot objects

[Kenji Kaneshige]

Matthew Wilcox ????????:
> On Tue, Nov 13, 2007 at 03:33:14PM -0800, Kristen Carlson Accardi wrote:
> > As far as being able to retrieve the slot number (which it seemed from
> > the HP manageablity application perspective is the goal here), that
> > information is available from userspace as well for at least standard PCI
> > and pcie based systems for occupied slots.  For standard pci, you have
> > to make something up anyway - for shpchp we just use an incremental 
> > number and combine it with the bus number to represent the slot.  For
> > pcie, you can get this info from the slot capabilities register.
>
> Ummm ... that's not what the /spec/ says.  I've never worked on any shpc
> machines, but the shpc driver reads the slot values from the SLOT_CONFIG
> register, just like the spec says to.

The slot number for shpc slot is like 'YYYY_XXXX'.

YYYY is the bus number, though I don't know the specific reason
why it was added.

XXXX is slot number decided according to the shpc specification,
as you said.

Thanks,
Kenji Kaneshige

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