From: Benjamin Herrenschmidt <benh@kernel.crashing.org>
To: Gianni Tedesco <gianni@ecsc.co.uk>
Cc: linux-kernel@vger.kernel.org
Subject: Re: AGP aperture is 16MB @ 0x0
Date: 02 Feb 2003 20:20:47 +0100 [thread overview]
Message-ID: <1044213647.586.6.camel@zion.wanadoo.fr> (raw)
In-Reply-To: <1044196570.6032.24.camel@lemsip>
On Sun, 2003-02-02 at 15:36, Gianni Tedesco wrote:
> Hi,
>
> I have a problem getting agpgart/drm to work on my TiBook, I have
> tracked the problem down to that suspect looking message.
>
> agpgart: AGP aperture is 16MB @ 0x00
> [drm] AGP 0.99 on Unkiwn @ 0x00000000 16MB
>
> which results in the following messages in my XFree86 logs:
>
> [agp] ring handle = 0x0000000
> [agp] Could not map ring
Ok, things are a bit weird with UniNorth, AGP base beeing at 0
is actually correct. You probably need fixed DRM which can deal
with UniNorth weirdies. Ask Michel Dänzer <michel@daenzer.net>
for up to date patches against XFree DRI CVS
> Its an ATI Radeon 7500 Mobility M7 on an Apple UniNorth 1.5 chipset.
>
> I think the correct aperture base is one of:
>
> AGP special page: 0xdffff000
> aper_base: b8000000 MC_FB_LOC to: bbffb800, MC_AGP_LOC to: ffffc000
No. These are addresses in the card's address space, and things are
setup differently than what is displayed by this debug code actually ;)
What you see there is what I would like to program in the card, but I
had to disable this for now as it's incompatible with current XFree
radeon driver.
--
Benjamin Herrenschmidt <benh@kernel.crashing.org>
prev parent reply other threads:[~2003-02-02 19:09 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2003-02-02 14:36 Gianni Tedesco
2003-02-02 19:20 ` Benjamin Herrenschmidt [this message]
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