linux-kernel - Re: [PATCH 2.6.18] IA64: Add pci_fixup_video into IA64 kernel for embedded VGA

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Message-Id: <200609260848.53556.jesse.barnes@intel.com>
Date:	Tue, 26 Sep 2006 08:48:53 -0700
From:	Jesse Barnes <jesse.barnes@...el.com>
To:	Bjorn Helgaas <bjorn.helgaas@...com>
Cc:	eiichiro.oiwa.nm@...achi.com, akpm@...l.org, tony.luck@...el.com,
	greg@...ah.com, linux-ia64@...r.kernel.org,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH 2.6.18] IA64: Add pci_fixup_video into IA64 kernel for embedded VGA

On Tuesday, September 26, 2006 8:09 am, Bjorn Helgaas wrote:
> On Tuesday 26 September 2006 01:42, eiichiro.oiwa.nm@...achi.com wrote:
> > To be compatible with Xorg's handling of PCI, we need pci_fixup_video
> > on IA64 platform like x86 platform. There are also machines, which
> > have VGA embedded into main board, among IA64 platform. Embedded VGA
> > generally don't have PCI ROM, and there are VGA ROM image in System
> > BIOS. Therefore, these machines need pci_fixup_video for the sysfs
> > rom. pci_fixup_video already exists in x86 Linux kernel. However since
> > this function doesn't exist in IA64 kernel, we could not run X server
> > on IA64 box has embedded-VGA.
> >
> > I tested pci_fixup_video on IA64 box has embedded-VGA. I confirmed we
> > can read VGA BIOS from the sysfs rom regardless of embedded-VGA.
>
> What other architectures will need this?  There's nothing ia64-specific
> in the patch below.  Can it be put somewhere more generic?

It could go into drivers/pci, but setting the flag implies that the ROM is 
at 0xc0000, so it does have some arch dependencies (though at least x86, 
x86_64 and ia64 have machines that do this).

Jesse
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