From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from ug-out-1314.google.com (ug-out-1314.google.com [66.249.92.171]) by ozlabs.org (Postfix) with ESMTP id 407F3DDE06 for ; Sun, 20 Jul 2008 20:03:22 +1000 (EST) Received: by ug-out-1314.google.com with SMTP id k3so164932ugf.0 for ; Sun, 20 Jul 2008 03:03:20 -0700 (PDT) Message-ID: <48830D56.2080704@genesi-usa.com> Date: Sun, 20 Jul 2008 11:03:02 +0100 From: Matt Sealey MIME-Version: 1.0 To: ppc-dev Subject: radeonfb, dedicate memory to something else Content-Type: text/plain; charset=UTF-8; format=flowed Sender: Matt Sealey List-Id: Linux on PowerPC Developers Mail List List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , 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 Genesi, Manager, Developer Relations