linux-kernel - Re: [RFC PATCH V3 1/4] pci: APM X-Gene PCIe controller driver

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Message-ID: <20140203221559.GG2519@obsidianresearch.com>
Date:	Mon, 3 Feb 2014 15:15:59 -0700
From:	Jason Gunthorpe <jgunthorpe@...idianresearch.com>
To:	Arnd Bergmann <arnd@...db.de>
Cc:	Tanmay Inamdar <tinamdar@....com>,
	Bjorn Helgaas <bhelgaas@...gle.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" <linux-pci@...r.kernel.org>,
	"devicetree@...r.kernel.org" <devicetree@...r.kernel.org>,
	linux-arm-kernel@...ts.infradead.org, linux-doc@...r.kernel.org,
	linux-kernel@...r.kernel.org, patches <patches@....com>,
	Jon Masters <jcm@...hat.com>, Liviu Dudau <Liviu.Dudau@....com>
Subject: Re: [RFC PATCH V3 1/4] pci: APM X-Gene PCIe controller driver

On Mon, Feb 03, 2014 at 09:12:32PM +0100, Arnd Bergmann wrote:

> Are you sure that is true for the root bridge as well? I don't
> remember the details, but I though that for the host bridge,
> we don't actually look at the BARs at all.

That is right, but this isn't a host bridge device, it is a PCI-PCI
bridge with root complex registers. The root complex bridge is not the
same as the host bridge.

Unfortunately the implementation is non-conforming. :(

Jason
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