linux-kernel - Re: [PATCH v6 0/3] of/pci: Provide common support for PCI DT parsing

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Message-ID: <20130415175641.GM28693@titan.lakedaemon.net>
Date:	Mon, 15 Apr 2013 13:56:41 -0400
From:	Jason Cooper <jason@...edaemon.net>
To:	Andrew Murray <Andrew.Murray@....com>
Cc:	rob.herring@...xeda.com, siva.kallam@...sung.com,
	linux-pci@...r.kernel.org, linus.walleij@...aro.org,
	thierry.reding@...onic-design.de, Liviu.Dudau@....com,
	grant.likely@...retlab.ca, paulus@...ba.org,
	linux-samsung-soc@...r.kernel.org, linux@....linux.org.uk,
	jg1.han@...sung.com, jgunthorpe@...idianresearch.com,
	thomas.abraham@...aro.org, benh@...nel.crashing.org, arnd@...db.de,
	devicetree-discuss@...ts.ozlabs.org, kgene.kim@...sung.com,
	bhelgaas@...gle.com, linux-arm-kernel@...ts.infradead.org,
	thomas.petazzoni@...e-electrons.com, monstr@...str.eu,
	linux-kernel@...r.kernel.org, suren.reddy@...sung.com
Subject: Re: [PATCH v6 0/3] of/pci: Provide common support for PCI DT
 parsing

Andrew Murray, Thomas,

On Thu, Apr 11, 2013 at 04:26:06PM +0100, Andrew Murray wrote:
> This patchset factors out duplicated code associated with parsing PCI
> DT "ranges" properties across the architectures and introduces a
> "ranges" parser. This parser "of_pci_range_parser" can be used directly
> by ARM host bridge drivers enabling them to obtain ranges from device
> trees.
> 
> I've included the Reviewed-by and Tested-by's received from v5 in this
> patchset, earlier versions of this patchset (v3) have been tested-by:
> 
> Thierry Reding <thierry.reding@...onic-design.de>
> Jingoo Han <jg1.han@...sung.com>
> 
> I believe a version of this patchset has also been tested through its
> inclusion in Thomas Petazzoni's Armada 370 and Armada XP SoCs PCIe support by:
> 
> Linus Walleij <linus.walleij@...aro.org>
> 
> I've tested that this patchset builds and runs on ARM and that it builds on
> PowerPC.
> 
> Compared to the v5 sent by Andrew Murray, the following changes have
> been made:
> 
>  * Use of CONFIG_64BIT instead of CONFIG_[a32bitarch] as suggested by
>    Rob Herring in drivers/of/of_pci.c
> 
>  * Added forward declaration of struct pci_controller in linux/of_pci.h
>    to prevent compiler warning as suggested by Thomas Petazzoni
> 
>  * Improved error checking (!range check), removal of unnecessary be32_to_cpup
>    call, improved formatting of struct of_pci_range_parser layout and
>    replacement of macro with a static inline. All suggested by Rob Herring.
> 
> Compared to the v4 (incorrectly labelled v3) sent by Andrew Murray,
> the following changes have been made:
> 
>  * Split the patch as suggested by Rob Herring
> 
> Compared to the v3 sent by Andrew Murray, the following changes have
> been made:
> 
>  * Unify and move duplicate pci_process_bridge_OF_ranges functions to
>    drivers/of/of_pci.c as suggested by Rob Herring
> 
>  * Fix potential build errors with Microblaze/MIPS
> 
> Compared to "[PATCH v5 01/17] of/pci: Provide support for parsing PCI DT
> ranges property", the following changes have been made:
> 
>  * Correct use of IORESOURCE_* as suggested by Russell King
> 
>  * Improved interface and naming as suggested by Thierry Reding
> 
> Compared to the v2 sent by Andrew Murray, Thomas Petazzoni did:
> 
>  * Add a memset() on the struct of_pci_range_iter when starting the
>    for loop in for_each_pci_range(). Otherwise, with an uninitialized
>    of_pci_range_iter, of_pci_process_ranges() may crash.
> 
>  * Add parenthesis around 'res', 'np' and 'iter' in the
>    for_each_of_pci_range macro definitions. Otherwise, passing
>    something like &foobar as 'res' didn't work.
> 
>  * Rebased on top of 3.9-rc2, which required fixing a few conflicts in
>    the Microblaze code.
> 
> v2:
>   This follows on from suggestions made by Grant Likely
>   (marc.info/?l=linux-kernel&m=136079602806328)
> 
> Andrew Murray (3):
>   of/pci: Unify pci_process_bridge_OF_ranges from Microblaze and
>     PowerPC
>   of/pci: Provide support for parsing PCI DT ranges property
>   of/pci: mips: convert to common of_pci_range_parser
> 
>  arch/microblaze/include/asm/pci-bridge.h |    5 +-
>  arch/microblaze/pci/pci-common.c         |  192 ------------------------------
>  arch/mips/pci/pci.c                      |   50 +++------
>  arch/powerpc/include/asm/pci-bridge.h    |    5 +-
>  arch/powerpc/kernel/pci-common.c         |  192 ------------------------------
>  drivers/of/address.c                     |   66 ++++++++++
>  drivers/of/of_pci.c                      |  168 ++++++++++++++++++++++++++
>  include/linux/of_address.h               |   46 +++++++
>  include/linux/of_pci.h                   |    4 +
>  9 files changed, 302 insertions(+), 426 deletions(-)

As agreed with Rob Herring, series applied to mvebu/drivers to support
mvebu pcie driver.

thx,

Jason.
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