Subject: [PATCH 3/3] PCI: generic: Add support for Cavium ThunderX PCIe root complexes.

From: [email-masked] (Will Deacon)
Date: Tue, 22 Sep 2015 19:52:30 +0100

On Thu, Sep 17, 2015 at 11:41:34PM +0100, David Daney wrote:
> From: David Daney <[email-masked]>
> 
> The config space for external PCIe root complexes on some Cavium
> ThunderX SoCs is very similar to CAM and ECAM, but differs in the
> shift values that have to be applied to the bus and devfn numbers to
> compose that address window offset.  These root complexes also have
> the interesting property that there is no root bridge, so the standard
> manner of limiting scanning to only the first device doesn't work.  We
> can use the standard pci-host-generic driver if we make a minor
> addition to handle these differences, so we...
> 
> Add a mapping function for ThunderX PCIe root complexes with a bus
> shift of 24 and devfn shift of 16.  Ignore accesses for devices other
> than the first device on the primary bus.
> 
> Document the whole thing in devicetree/bindings/pci/host-generic-pci.txt
> 
> Signed-off-by: David Daney <[email-masked]>
> ---
>  .../devicetree/bindings/pci/host-generic-pci.txt   |  8 +++---
>  drivers/pci/host/pci-host-generic.c                | 29 ++++++++++++++++++++++
>  2 files changed, 34 insertions(+), 3 deletions(-)

Thanks, this looks better now:

  Acked-by: Will Deacon <[email-masked]>

Will