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

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Message-ID: <CACoXjcmwspC58WwELQgfbJ-ye5RR0OQh9QA=sVeRDvFTuAxBUA@mail.gmail.com>
Date:	Mon, 27 Jan 2014 14:58:10 -0800
From:	Tanmay Inamdar <tinamdar@....com>
To:	Dann Frazier <dann.frazier@...onical.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-arm-kernel@...ts.infradead.org>, linux-doc@...r.kernel.org,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	patches <patches@....com>, Jon Masters <jcm@...hat.com>
Subject: Re: [RFC PATCH V3 0/4] APM X-Gene PCIe controller

On Sat, Jan 25, 2014 at 8:09 AM, Dann Frazier
<dann.frazier@...onical.com> wrote:
> 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?

Yes. You are right. I will re-post the patch.

>
>   -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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