linux-kernel - Re: [PATCH v7 1/6] pci: Introduce pci_register_io

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Message-ID: <20140627124949.GR26276@arm.com>
Date:	Fri, 27 Jun 2014 13:49:49 +0100
From:	Will Deacon <will.deacon@....com>
To:	Arnd Bergmann <arnd@...db.de>
Cc:	Rob Herring <robherring2@...il.com>,
	Catalin Marinas <Catalin.Marinas@....com>,
	Bjorn Helgaas <bhelgaas@...gle.com>,
	"devicetree@...r.kernel.org" <devicetree@...r.kernel.org>,
	linaro-kernel <linaro-kernel@...ts.linaro.org>,
	linux-pci <linux-pci@...r.kernel.org>,
	LKML <linux-kernel@...r.kernel.org>,
	Grant Likely <grant.likely@...retlab.ca>,
	Tanmay Inamdar <tinamdar@....com>,
	Benjamin Herrenschmidt <benh@...nel.crashing.org>,
	Jon Masters <jonathan@...masters.org>,
	Liviu Dudau <Liviu.Dudau@....com>,
	LAKML <linux-arm-kernel@...ts.infradead.org>,
	Michal Simek <monstr@...str.eu>
Subject: Re: [PATCH v7 1/6] pci: Introduce pci_register_io_range() helper
 function.

On Fri, Jun 27, 2014 at 12:03:34PM +0100, Arnd Bergmann wrote:
> On Thursday 26 June 2014 19:44:21 Rob Herring wrote:
> > I don't agree arm32 is harder than microblaze. Yes, converting ALL of
> > arm would be, but that is not necessary. With Liviu's latest branch
> > the hacks I previously needed are gone (thanks!), and this is all I
> > need to get Versatile PCI working (under QEMU):
> 
> I meant converting all of arm32 would be harder, but I agree we don't
> have to do it. It would be nice to convert all of the drivers/pci/host
> drivers though, iow all multiplatform-enabled ones, and leaving the
> current arm32 pci implementation for the platforms we don't want to
> convert to multiplatform anyway (footbridge, iop, ixp4xx, ks8695 (?),
> pxa, sa1100).

I'm more than happy to convert the generic host controller we merged
recently, but I'd probably want the core changes merged first so that I
know I'm not wasting my time!

Will
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