* Re: [RFC v1] PCIe support for the Armada 370 and Armada XP SoCs
2013-01-03 14:39 ` [RFC v1] PCIe support for the Armada 370 and Armada XP SoCs Thierry Reding
@ 2013-01-03 15:00 ` Bjorn Helgaas
2013-01-03 15:11 ` Thierry Reding
2013-01-03 15:09 ` Thomas Petazzoni
2013-01-03 15:56 ` Arnd Bergmann
2 siblings, 1 reply; 6+ messages in thread
From: Bjorn Helgaas @ 2013-01-03 15:00 UTC (permalink / raw)
To: Thierry Reding
Cc: Thomas Petazzoni, Jason Cooper, Andrew Lunn, Gregory Clement,
linux-arm-kernel, Stephen Warren, Lior Amsalem, Maen Suleiman,
Tawfik Bayouk, Shadi Ammouri, Eran Ben-Avi, Yehuda Yitschak,
Nadav Haklai, Arnd Bergmann, Rob Herring, Jason Gunthorpe,
linux-pci
On Thu, Jan 3, 2013 at 7:39 AM, Thierry Reding
<thierry.reding@avionic-design.de> wrote:
> Hi everyone,
>
> Thomas' RFC series incited me to put in some more work on the Tegra PCIe
> controller driver. This in turn brought up an old issue: should we move
> PCIe controller drivers to some central location rather than keeping
> them in machine-specific directories? Last time I brought this up there
> was no consensus but I really think there's some value in keeping these
> drivers in a common location, especially now that a few people are
> starting to work on similar problems. It may also provide some more
> momentum to get the various DT implementations factored out of various
> architectures.
>
> Stephen proposed drivers/pci/host on IRC and I second that.
>
> Bjorn, is this something you would be on board with?
Sounds fine to me.
^ permalink raw reply [flat|nested] 6+ messages in thread
* Re: [RFC v1] PCIe support for the Armada 370 and Armada XP SoCs
2013-01-03 15:00 ` Bjorn Helgaas
@ 2013-01-03 15:11 ` Thierry Reding
0 siblings, 0 replies; 6+ messages in thread
From: Thierry Reding @ 2013-01-03 15:11 UTC (permalink / raw)
To: Bjorn Helgaas
Cc: Thomas Petazzoni, Jason Cooper, Andrew Lunn, Gregory Clement,
linux-arm-kernel, Stephen Warren, Lior Amsalem, Maen Suleiman,
Tawfik Bayouk, Shadi Ammouri, Eran Ben-Avi, Yehuda Yitschak,
Nadav Haklai, Arnd Bergmann, Rob Herring, Jason Gunthorpe,
linux-pci
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On Thu, Jan 03, 2013 at 08:00:58AM -0700, Bjorn Helgaas wrote:
> On Thu, Jan 3, 2013 at 7:39 AM, Thierry Reding
> <thierry.reding@avionic-design.de> wrote:
> > Hi everyone,
> >
> > Thomas' RFC series incited me to put in some more work on the Tegra PCIe
> > controller driver. This in turn brought up an old issue: should we move
> > PCIe controller drivers to some central location rather than keeping
> > them in machine-specific directories? Last time I brought this up there
> > was no consensus but I really think there's some value in keeping these
> > drivers in a common location, especially now that a few people are
> > starting to work on similar problems. It may also provide some more
> > momentum to get the various DT implementations factored out of various
> > architectures.
> >
> > Stephen proposed drivers/pci/host on IRC and I second that.
> >
> > Bjorn, is this something you would be on board with?
>
> Sounds fine to me.
Great! Thomas, does that work for you as well?
Thierry
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^ permalink raw reply [flat|nested] 6+ messages in thread
* Re: [RFC v1] PCIe support for the Armada 370 and Armada XP SoCs
2013-01-03 14:39 ` [RFC v1] PCIe support for the Armada 370 and Armada XP SoCs Thierry Reding
2013-01-03 15:00 ` Bjorn Helgaas
@ 2013-01-03 15:09 ` Thomas Petazzoni
2013-01-03 15:56 ` Arnd Bergmann
2 siblings, 0 replies; 6+ messages in thread
From: Thomas Petazzoni @ 2013-01-03 15:09 UTC (permalink / raw)
To: Thierry Reding
Cc: Jason Cooper, Andrew Lunn, Gregory Clement, linux-arm-kernel,
Stephen Warren, Lior Amsalem, Maen Suleiman, Tawfik Bayouk,
Shadi Ammouri, Eran Ben-Avi, Yehuda Yitschak, Nadav Haklai,
Arnd Bergmann, Rob Herring, Jason Gunthorpe, Bjorn Helgaas,
linux-pci
Dear Thierry Reding,
On Thu, 3 Jan 2013 15:39:31 +0100, Thierry Reding wrote:
> Thomas' RFC series incited me to put in some more work on the Tegra
> PCIe controller driver. This in turn brought up an old issue: should
> we move PCIe controller drivers to some central location rather than
> keeping them in machine-specific directories? Last time I brought
> this up there was no consensus but I really think there's some value
> in keeping these drivers in a common location, especially now that a
> few people are starting to work on similar problems. It may also
> provide some more momentum to get the various DT implementations
> factored out of various architectures.
>
> Stephen proposed drivers/pci/host on IRC and I second that.
I for sure would be interested in a direction such as this one being
taken for PCI support. Having drivers in a common directory will help
comparing them, extracting common patterns, etc.
Best regards,
Thomas
--
Thomas Petazzoni, Free Electrons
Kernel, drivers, real-time and embedded Linux
development, consulting, training and support.
http://free-electrons.com
^ permalink raw reply [flat|nested] 6+ messages in thread
* Re: [RFC v1] PCIe support for the Armada 370 and Armada XP SoCs
2013-01-03 14:39 ` [RFC v1] PCIe support for the Armada 370 and Armada XP SoCs Thierry Reding
2013-01-03 15:00 ` Bjorn Helgaas
2013-01-03 15:09 ` Thomas Petazzoni
@ 2013-01-03 15:56 ` Arnd Bergmann
2013-01-03 16:01 ` Thierry Reding
2 siblings, 1 reply; 6+ messages in thread
From: Arnd Bergmann @ 2013-01-03 15:56 UTC (permalink / raw)
To: Thierry Reding
Cc: Thomas Petazzoni, Jason Cooper, Andrew Lunn, Gregory Clement,
linux-arm-kernel, Stephen Warren, Lior Amsalem, Maen Suleiman,
Tawfik Bayouk, Shadi Ammouri, Eran Ben-Avi, Yehuda Yitschak,
Nadav Haklai, Rob Herring, Jason Gunthorpe, Bjorn Helgaas,
linux-pci
On Thursday 03 January 2013, Thierry Reding wrote:
> Stephen proposed drivers/pci/host on IRC and I second that.
Agreed, I like that, too. There is a little problem with cross-platform
PCI hosts still because some portion of the interface is still arch
specific, but I don't see this as a show-stopper for moving drivers
there. The ARM specific drivers can still use the ARM interfaces
for now, until everything is made generic. If they are going to
be shared with other architectures, those can use the same interfaces
that ARM has. I think Microblaze, ARC and Metag are strong candidates
for doing this.
Arnd
^ permalink raw reply [flat|nested] 6+ messages in thread
* Re: [RFC v1] PCIe support for the Armada 370 and Armada XP SoCs
2013-01-03 15:56 ` Arnd Bergmann
@ 2013-01-03 16:01 ` Thierry Reding
0 siblings, 0 replies; 6+ messages in thread
From: Thierry Reding @ 2013-01-03 16:01 UTC (permalink / raw)
To: Arnd Bergmann
Cc: Thomas Petazzoni, Jason Cooper, Andrew Lunn, Gregory Clement,
linux-arm-kernel, Stephen Warren, Lior Amsalem, Maen Suleiman,
Tawfik Bayouk, Shadi Ammouri, Eran Ben-Avi, Yehuda Yitschak,
Nadav Haklai, Rob Herring, Jason Gunthorpe, Bjorn Helgaas,
linux-pci
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On Thu, Jan 03, 2013 at 03:56:31PM +0000, Arnd Bergmann wrote:
> On Thursday 03 January 2013, Thierry Reding wrote:
> > Stephen proposed drivers/pci/host on IRC and I second that.
>
> Agreed, I like that, too. There is a little problem with cross-platform
> PCI hosts still because some portion of the interface is still arch
> specific, but I don't see this as a show-stopper for moving drivers
> there. The ARM specific drivers can still use the ARM interfaces
> for now, until everything is made generic. If they are going to
> be shared with other architectures, those can use the same interfaces
> that ARM has. I think Microblaze, ARC and Metag are strong candidates
> for doing this.
Great, sounds like a plan. I'll move Tegra PCIe into drivers/pci/host
then.
Thierry
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^ permalink raw reply [flat|nested] 6+ messages in thread