On Fri, Mar 21, 2014 at 3:47 PM, Cristina Olariu <colariu@xxxxxxxxx> wrote: > https://bugzilla.kernel.org/show_bug.cgi?id=72681 >>>> On Fri, Mar 21, 2014 at 11:56 AM, Cristina Olariu <colariu@xxxxxxxxx> >>>> wrote: >>>> > >>>> > I was trying to use the pci_slot module in order to associate a network >>>> > interface to its corresponding network port by matching devices with >>>> > physical slot information. >>>> > >>>> > Unfortunately the PCIe slots on our platform don't support the hot-plug >>>> > function and the pci_slot module doesn't expose the slots interface in >>>> > sysfs. >>>> > >>>> > Is there another way to list devices by physical add-in slots? We are >>>> > using >>>> > kernel version 3.4.67. >>>> > Any pointers you may be able to offer would be appreciated. Your lspci (from the bugzilla mentioned above) shows 12 devices that claim to have a slot, based on the PCIe Capabilities Register, but most of them have a "Physical Slot Number" of zero: 00:01.0 Intel Root Port Slot #0 to [bus 01] 00:02.0 Intel Root Port Slot #0 to [bus 02] 00:02.2 Intel Root Port Slot #0 to [bus 03-09] 00:03.0 Intel Root Port Slot #0 to [bus 0a-0b] 00:03.1 Intel Root Port Slot #0 to [bus 0c-0d] 00:03.2 Intel Root Port Slot #0 to [bus 0e] 00:1c.0 Intel Root Port Slot #0 to [bus 10] 00:1c.1 Intel Root Port Slot #0 to [bus 11] 00:1c.2 Intel Root Port Slot #0 to [bus 12] 04:00.0 PLX Downstream Port Slot #0 to [bus 05-06] 04:01.0 PLX Downstream Port Slot #1 to [bus 07-08] 04:08.0 PLX Downstream Port Slot #8 to [bus 09] 03:00.0 PLX Upstream Port to [bus 04-09] 05:00.0 Intel 82599ES 10G NIC (in Slot #0) 07:00.0 Intel 82599ES 10G NIC (in Slot #1) My guess is that the ones you care about are the slots connected to the PLX Downstream Ports, but I don't know how to make a rule about which ones we should expose. I think the slot code can disambiguate them by adding a suffix, so I guess one possibility is to expose them all as, e.g., "0", "0-1", "0-2", "0-3", etc. Then you'd end up with the PLX Downstream Port slots being "0-9", "1", and "8", which seems sort of ugly. What's the network port information you want to match up with these slot numbers? Bjorn -- 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
