Message-ID: <43EAE4AC.6070807@snapgear.com>
Date: Thu, 09 Feb 2006 16:43:56 +1000
From: Greg Ungerer <gerg@snapgear.com>
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To: linux-kernel@vger.kernel.org
CC: Jon Ringle <jringle@vertical.com>
Subject: Re: Linux running on a PCI Option device?
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Hi Jon,

Jon Ringle wrote:
> I am working on a new board that will have Linux running on an xscale 
> processor. This board will be a PCI Option device. I currently have a IXDP465 
> eval board which has a PCI Option connector that I will use for prototyping. 
> From what I can tell so far, Linux wants to scan the PCI bus for devices as 
> if it is the PCI host. Is there any provision in Linux so that it can take on 
> the role of a PCI option rather than a PCI host?

Have a look at the code in arch/arm/mach-ixp4xx/common-pci.c, in
the function ixp4xx_pci_preinit().

It does a check on whether the PCI bus is configured as HOST or not.
I don't know if that code support is enough for it all to work right
though (I certainly haven't tried it on either the 425 or 465...)

Regards
Greg


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Greg Ungerer  --  Chief Software Dude       EMAIL:     gerg@snapgear.com
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