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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