On 25 October 2013 20:48, Bjorn Helgaas <bhelgaas@xxxxxxxxxx> wrote: > On Fri, Oct 25, 2013 at 12:18 PM, Karicheri, Muralidharan > <m-karicheri2@xxxxxx> wrote: >>>> -----Original Message----- >>>> From: Andrew Murray [mailto:amurray@xxxxxxxxxxxxxxxxxxx] >>>> Sent: Friday, October 25, 2013 12:27 PM >>>> To: Karicheri, Muralidharan >>>> Cc: linux-pci@xxxxxxxxxxxxxxx >>>> Subject: Re: AER driver on ARM platform >>>> >>>> On 25 October 2013 16:56, Karicheri, Muralidharan <m-karicheri2@xxxxxx> wrote: >>>> > Did anyone successfully tested PCIe AER driver on an ARM platform? I saw this enabled in >>>> a tegra platform. Could someone from nVidia respond? >>>> >>>> I've previously used this on a custom ARM platform - it works. >>>> >>>> You need to ensure that PCIe port services are enabled, I believe at one point this required >>>> 'pcie_ports=native' to be set on the kernel command line. >>>> >>>> Andrew Murray >>>> >> >> Yes. That was it. It probes the driver now. > > You should not have to boot with "pcie_ports=native" unless you are > debugging or working around a firmware issue. > > It looks like get_port_device_capability() expects the arch to > implement a pcie_port_platform_notify() that sets a bitmask of PCIe > services that Linux should take control of. But that's only > implemented for ACPI systems (x86 and ia64), so probably every other > arch is stuck with the "pcie_ports=native" hack. > > This is a bug, and somebody should fix it. Consider yourself > empowered to implement whatever you need on ARM to negotiate for > control of these PCIe services. I'll pick this up. Andrew Murray -- 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
