linux-kernel - Re: [RFC PATCH V3 0/4] APM X-Gene PCIe controller

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Message-ID: <CALdTtnsEo74UeYgoQ0DF7=LN074b_0bL0vg6Bxs02B9nDkRTNA@mail.gmail.com>
Date:	Sat, 25 Jan 2014 09:09:39 -0700
From:	Dann Frazier <dann.frazier@...onical.com>
To:	Tanmay Inamdar <tinamdar@....com>
Cc:	Bjorn Helgaas <bhelgaas@...gle.com>, Arnd Bergmann <arnd@...db.de>,
	Jason Gunthorpe <jgunthorpe@...idianresearch.com>,
	Grant Likely <grant.likely@...aro.org>,
	Rob Herring <robh+dt@...nel.org>,
	Catalin Marinas <catalin.marinas@....com>,
	Rob Landley <rob@...dley.net>, linux-pci@...r.kernel.org,
	devicetree@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
	linux-doc@...r.kernel.org, linux-kernel@...r.kernel.org,
	patches@....com, jcm@...hat.com
Subject: Re: [RFC PATCH V3 0/4] APM X-Gene PCIe controller

On Fri, Jan 24, 2014 at 2:32 PM, Tanmay Inamdar <tinamdar@....com> wrote:
> This patch adds support for AppliedMicro X-Gene PCIe host controller. The
> driver is tested on X-Gene platform with different gen1/2/3 PCIe endpoint
> cards.
>
> X-Gene PCIe controller driver has depedency on the pcie arch support for
> arm64. The arm64 pcie arch support is not yet part of mainline Linux kernel
> and approach for arch support is under discussion with arm64 maintainers.
> The reference patch can be found here --> https://lkml.org/lkml/2013/10/23/244

The reference patch looks corrupted (pcibios.c has no includes, etc),
would you mind reposting?

  -dann

> If someone wishes to test PCIe on X-Gene, arch support patch must be applied
> before the patches in this patch set.
>
> changes since V2:
> 1. redefined each PCI port in different PCI domain correctly.
> 2. removed setup_lane and setup_link functions from driver.
> 3. removed scan_bus wrapper and set_primary_bus hack.
> 4. added pci_ioremap_io for io resources.
>
> changes since V1:
> 1. added PCI domain support
> 2. reading cpu and pci addresses from device tree to configure regions.
> 3. got rid of unnecessary wrappers for readl and writel.
> 4. got rid of endpoint configuration code.
> 5. added 'dma-ranges' property support to read inbound region configuration.
> 6. renamed host driver file to 'pci-xgene.c' from 'pcie-xgene.c'
> 7. dropped 'clock-names' property from bindings
> 8. added comments whereever requested.
>
> Tanmay Inamdar (4):
>   pci: APM X-Gene PCIe controller driver
>   arm64: dts: APM X-Gene PCIe device tree nodes
>   dt-bindings: pci: xgene pcie device tree bindings
>   MAINTAINERS: entry for APM X-Gene PCIe host driver
>
>  .../devicetree/bindings/pci/xgene-pci.txt          |   52 ++
>  MAINTAINERS                                        |    7 +
>  arch/arm64/boot/dts/apm-mustang.dts                |    8 +
>  arch/arm64/boot/dts/apm-storm.dtsi                 |  155 ++++
>  drivers/pci/host/Kconfig                           |   10 +
>  drivers/pci/host/Makefile                          |    1 +
>  drivers/pci/host/pci-xgene.c                       |  784 ++++++++++++++++++++
>  7 files changed, 1017 insertions(+)
>  create mode 100644 Documentation/devicetree/bindings/pci/xgene-pci.txt
>  create mode 100644 drivers/pci/host/pci-xgene.c
>
> --
> 1.7.9.5
>
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