From: Jason Gunthorpe <jgunthorpe@obsidianresearch.com>
To: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Cc: Bjorn Helgaas <bhelgaas@google.com>,
Gerlando Falauto <gerlando.falauto@keymile.com>,
"linux-pci@vger.kernel.org" <linux-pci@vger.kernel.org>,
"linux-arm-kernel@lists.infradead.org"
<linux-arm-kernel@lists.infradead.org>,
Andrew Lunn <andrew@lunn.ch>,
Sebastian Hesselbarth <sebastian.hesselbarth@gmail.com>,
Jason Cooper <jason@lakedaemon.net>,
"Longchamp, Valentin" <Valentin.Longchamp@keymile.com>,
Ezequiel Garcia <ezequiel.garcia@free-electrons.com>,
Lior Amsalem <alior@marvell.com>
Subject: Re: pci-mvebu driver on km_kirkwood
Date: Thu, 20 Feb 2014 10:35:18 -0700 [thread overview]
Message-ID: <20140220173518.GA19893@obsidianresearch.com> (raw)
In-Reply-To: <20140220095518.7ca36f0a@skate>
On Thu, Feb 20, 2014 at 09:55:18AM +0100, Thomas Petazzoni wrote:
> Does that make sense? Keep in mind that I'm still not completely
> familiar with the PCI terminology, so maybe the above explanation does
> not use the right terms.
Stated another way, the Marvel PCI-E to PCI-E bridge config space has
a quirk that requires the window BARs to be aligned on their size and
sized to a power of 2.
The first requirement is already being handled by hooking through
ARM's 'align_resource' callback.
One avenue would be to have mvebu_pcie_align_resource return a struct
resource and manipulate the size as well. Assuming the PCI core will
accommodate that.
Jason
WARNING: multiple messages have this Message-ID (diff)
From: jgunthorpe@obsidianresearch.com (Jason Gunthorpe)
To: linux-arm-kernel@lists.infradead.org
Subject: pci-mvebu driver on km_kirkwood
Date: Thu, 20 Feb 2014 10:35:18 -0700 [thread overview]
Message-ID: <20140220173518.GA19893@obsidianresearch.com> (raw)
In-Reply-To: <20140220095518.7ca36f0a@skate>
On Thu, Feb 20, 2014 at 09:55:18AM +0100, Thomas Petazzoni wrote:
> Does that make sense? Keep in mind that I'm still not completely
> familiar with the PCI terminology, so maybe the above explanation does
> not use the right terms.
Stated another way, the Marvel PCI-E to PCI-E bridge config space has
a quirk that requires the window BARs to be aligned on their size and
sized to a power of 2.
The first requirement is already being handled by hooking through
ARM's 'align_resource' callback.
One avenue would be to have mvebu_pcie_align_resource return a struct
resource and manipulate the size as well. Assuming the PCI core will
accommodate that.
Jason
next prev parent reply other threads:[~2014-02-20 17:35 UTC|newest]
Thread overview: 90+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-07-10 16:15 pci-mvebu driver on km_kirkwood Gerlando Falauto
2013-07-10 16:57 ` Thomas Petazzoni
2013-07-10 17:31 ` Gerlando Falauto
2013-07-10 19:56 ` Gerlando Falauto
2013-07-11 7:03 ` Valentin Longchamp
2013-07-12 8:59 ` Thomas Petazzoni
2013-07-15 15:46 ` Valentin Longchamp
2013-07-15 19:51 ` Thomas Petazzoni
2013-07-11 14:32 ` Thomas Petazzoni
2014-02-18 17:29 ` Gerlando Falauto
2014-02-18 20:27 ` Thomas Petazzoni
2014-02-19 8:38 ` Gerlando Falauto
2014-02-19 9:26 ` Thomas Petazzoni
2014-02-19 9:39 ` Gerlando Falauto
2014-02-19 13:37 ` Thomas Petazzoni
2014-02-19 13:37 ` Thomas Petazzoni
2014-02-19 21:45 ` Bjorn Helgaas
2014-02-19 21:45 ` Bjorn Helgaas
2014-02-20 8:55 ` Thomas Petazzoni
2014-02-20 8:55 ` Thomas Petazzoni
2014-02-20 17:35 ` Jason Gunthorpe [this message]
2014-02-20 17:35 ` Jason Gunthorpe
2014-02-20 20:29 ` Thomas Petazzoni
2014-02-20 20:29 ` Thomas Petazzoni
2014-02-21 0:32 ` Jason Gunthorpe
2014-02-21 0:32 ` Jason Gunthorpe
2014-02-21 8:34 ` Thomas Petazzoni
2014-02-21 8:34 ` Thomas Petazzoni
2014-02-21 8:58 ` Gerlando Falauto
2014-02-21 8:58 ` Gerlando Falauto
2014-02-21 9:12 ` Thomas Petazzoni
2014-02-21 9:12 ` Thomas Petazzoni
2014-02-21 9:16 ` Gerlando Falauto
2014-02-21 9:16 ` Gerlando Falauto
2014-02-21 9:39 ` Thomas Petazzoni
2014-02-21 9:39 ` Thomas Petazzoni
2014-02-21 12:24 ` Gerlando Falauto
2014-02-21 12:24 ` Gerlando Falauto
2014-02-21 13:47 ` Thomas Petazzoni
2014-02-21 13:47 ` Thomas Petazzoni
2014-02-21 15:05 ` Arnd Bergmann
2014-02-21 15:05 ` Arnd Bergmann
2014-02-21 15:11 ` Thomas Petazzoni
2014-02-21 15:11 ` Thomas Petazzoni
2014-02-21 15:20 ` Arnd Bergmann
2014-02-21 15:20 ` Arnd Bergmann
2014-02-21 15:37 ` Thomas Petazzoni
2014-02-21 15:37 ` Thomas Petazzoni
2014-02-21 16:39 ` Jason Gunthorpe
2014-02-21 16:39 ` Jason Gunthorpe
2014-02-21 17:05 ` Thomas Petazzoni
2014-02-21 17:05 ` Thomas Petazzoni
2014-02-21 17:31 ` Jason Gunthorpe
2014-02-21 17:31 ` Jason Gunthorpe
2014-02-21 18:05 ` Arnd Bergmann
2014-02-21 18:05 ` Arnd Bergmann
2014-02-21 18:29 ` Gerlando Falauto
2014-02-21 18:29 ` Gerlando Falauto
2014-02-21 18:18 ` Gerlando Falauto
2014-02-21 18:18 ` Gerlando Falauto
2014-02-21 18:45 ` Thomas Petazzoni
2014-02-21 18:45 ` Thomas Petazzoni
2014-02-20 19:18 ` Bjorn Helgaas
2014-02-20 19:18 ` Bjorn Helgaas
2014-02-21 0:24 ` Jason Gunthorpe
2014-02-21 0:24 ` Jason Gunthorpe
2014-02-21 19:05 ` Bjorn Helgaas
2014-02-21 19:05 ` Bjorn Helgaas
2014-02-21 19:21 ` Thomas Petazzoni
2014-02-21 19:21 ` Thomas Petazzoni
2014-02-21 19:53 ` Benjamin Herrenschmidt
2014-02-21 19:53 ` Benjamin Herrenschmidt
2014-02-23 3:43 ` Gavin Shan
2013-07-31 8:03 ` Thomas Petazzoni
2013-07-31 8:26 ` Gerlando Falauto
2013-07-31 9:00 ` Thomas Petazzoni
2013-07-31 20:50 ` Jason Gunthorpe
2013-08-09 14:01 ` Thierry Reding
2013-08-26 9:27 ` Gerlando Falauto
2013-08-26 9:27 ` Gerlando Falauto
2013-08-26 12:02 ` Thierry Reding
2013-08-26 12:02 ` Thierry Reding
2013-08-26 14:49 ` Gerlando Falauto
2013-08-26 14:49 ` Gerlando Falauto
2013-08-26 19:16 ` Jason Gunthorpe
2013-08-26 19:16 ` Jason Gunthorpe
2013-11-04 14:49 ` Gerlando Falauto
2013-11-04 14:49 ` Gerlando Falauto
2013-11-05 8:13 ` Thierry Reding
2013-11-05 8:13 ` Thierry Reding
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