On Tue, Jan 26, 2010 at 01:23:50PM +0100, Andreas Besse wrote: > Alex Chiang wrote: > > * Greg KH <greg@xxxxxxxxx>: > > > >> On Mon, Jan 25, 2010 at 09:27:18PM -0700, Alex Chiang wrote: > >> > >>> * Greg KH <greg@xxxxxxxxx>: > >>> > >>>> On Mon, Jan 25, 2010 at 09:57:45AM -0800, Gary Hade wrote: > >>>> > >>>>> Andreas, Would the physical slot number to PCI ID mapping > >>>>> provided in /sys/bus/pci/slots by the 'pci_slot' driver possibly > >>>>> be of any use to you? > >>>>> > >>>> That mapping should be already there if it is provided by the BIOS. > >>>> > >>> Where? Somewhere else in sysfs? > >>> > >>> /sys/bus/pci/slots/ only gets populated when a hotplug driver or > >>> pci_slot are loaded. > >>> > >>> And if those slots aren't hotplug capable, then that directory > >>> won't get populated. > >>> > >> Ah, I was thinking of the pci_slot stuff. > >> > > > > Gah, I was attempting to clarify, but instead made things worse. > > > > If the slots aren't physically capable of hotplug, then loading a > > hotplug driver (pciehp, acpiphp, shpchp, etc.) will not populate > > the directory. However, you may still have a chance at populating > > the directory if the slots are described in ACPI by the BIOS. > > > > > >>> Finally, if the slots aren't described by ACPI, that directory > >>> also won't get populated. > >>> > > > > In that scenario -- non hotplug slots, but described by ACPI -- > > you can modprobe pci_slot and you will indeed get entries in > > /sys/bus/pci/slots/ > > > > thanks for your clarification. > > the directory /sys/bus/pci/slots does not exist on my machine (kernel > 2.6.25.20-0.5-pae, openSUSE 11.0). > > if i type "modprobe pci_slot" i get the following error: > FATAL: Module pci_slot not found. > > is the module pci_slot only available in newer kernel releases? If you are able to update, it looks like openSUSE 11.2 has it. Gary -- Gary Hade System x Enablement IBM Linux Technology Center 503-578-4503 IBM T/L: 775-4503 garyhade@xxxxxxxxxx http://www.ibm.com/linux/ltc -- To unsubscribe from this list: send the line "unsubscribe linux-pci" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
