From: Matt Sealey <matt@genesi-usa•com>
To: ppc-dev <linuxppc-dev@ozlabs•org>
Subject: radeonfb, dedicate memory to something else
Date: Sun, 20 Jul 2008 11:03:02 +0100 [thread overview]
Message-ID: <48830D56.2080704@genesi-usa.com> (raw)
Hi guys,
I know this isn't a PPC question, but since some of the RadeonFB developers
live here I thought best (and it's about a PPC platform).
Is there any way to hack up the RadeonFB driver - or anything related - to
reserve portions of the memory for a "fake" MTD or so, and still use the
Radeon as a graphics device? What I am talking about basically is turning
a 64MB Radeon card into a 32MB Radeon card, or a 128MB one into a 64MB
card..
I think this can be done by hacking a PCI fixup perhaps, for Efika only
in my case, whereby the memory ranges are fiddled.
Perhaps, a better solution is to use some kind of in-kernel subsystem to
"allocate" and return a 32MB segment of PCI memory (and put it in an
named rheap) but I assume other drivers can and will simply walk all
over it?
--
Matt Sealey <matt@genesi-usa•com>
Genesi, Manager, Developer Relations
next reply other threads:[~2008-07-20 10:03 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-07-20 10:03 Matt Sealey [this message]
2008-07-20 15:26 ` radeonfb, dedicate memory to something else Jon Smirl
2008-07-22 8:31 ` Matt Sealey
2008-07-22 8:52 ` Michel Dänzer
2008-07-22 9:05 ` Matt Sealey
2008-07-22 14:25 ` Jon Smirl
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