On Thu, Jan 9, 2014 at 3:51 AM, Sunil Kovvuri <sunil.kovvuri@xxxxxxxxx> wrote: > Hi, > > I have a platform which has a on-board PCIe device attached to PCIe port. > This device is an ethernet device with SRIOV capability having morethan > 8 virtual functions. > > I am going through Linux's ARI configuration code and saw that it is checking > if upstream bridge supports ARI or not. In our case its a on-board device and > no bridge is involved. > > Need some help or ideas on how i can configure ARI on the device so that > all VFs gets added. > > Do i need to change the ARI configuration code or is there a way to fake a > PCI bridge for this purpose ? I assume you're referring to pci_configure_ari(). A PCIe endpoint such as your ethernet device always has an upstream bridge. In your case, the device is on-board and there's no PCIe switch involved, but the root port is the upstream device, and it is handled as a bridge. It looks like pci_configure_ari() should enable ARI by default when it is supported. But apparently it isn't being enabled on your system? Can you collect the "lspci -vv" output for the root port and the NIC? 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
