linux-kernel - Re: [PATCH 2.6.18] PCI: Turn pci_fixup_video into generic for embedded VGA

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Date:	Thu, 28 Sep 2006 12:18:22 +0100
From:	Alan Cox <alan@...rguk.ukuu.org.uk>
To:	eiichiro.oiwa.nm@...achi.com
Cc:	akpm@...l.org, tony.luck@...el.com, greg@...ah.com,
	Jesse Barnes <jesse.barnes@...el.com>,
	linux-ia64@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH 2.6.18] PCI: Turn pci_fixup_video into generic for
	embedded VGA

Ar Iau, 2006-09-28 am 13:55 +0900, ysgrifennodd
eiichiro.oiwa.nm@...achi.com:
> pci_fixup_video turns into generic code because there are many platforms need this fixup
> for embedded VGA as well as x86. The Video BIOS integrates into System BIOS on a machine
> has embedded VGA although embedded VGA generally don't have PCI ROM. As a result,
> embedded VGA need the way that the sysfs rom points to the Video BIOS of System
> RAM (0xC0000). PCI-to-PCI Bridge Architecture specification describes the condition whether
> or not PCI ROM forwards VGA compatible memory address. fixup_video suits this specification.
> Although the Video ROM generally implements in x86 code regardless of platform, some
> application such as X Window System can run this code by dosemu86. Therefore,
> pci_fixup_video should turn into generic code.
> 
> 
> Signed-off-by: Eiichiro Oiwa <eiichiro.oiwa.nm@...achi.com>

Acked-by: Alan Cox <alan@...hat.com>

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