From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S261724AbTJWTEd (ORCPT ); Thu, 23 Oct 2003 15:04:33 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S261746AbTJWTEd (ORCPT ); Thu, 23 Oct 2003 15:04:33 -0400 Received: from mail-3.tiscali.it ([195.130.225.149]:7910 "EHLO mail-3.tiscali.it") by vger.kernel.org with ESMTP id S261724AbTJWTEb (ORCPT ); Thu, 23 Oct 2003 15:04:31 -0400 Date: Thu, 23 Oct 2003 21:04:21 +0200 From: Kronos To: Eric Anholt Cc: linux-kernel@vger.kernel.org, linux-fbdev-devel@lists.sourceforge.net, "Jon Smirl" Subject: Re: [Linux-fbdev-devel] DRM and pci_driver conversion Message-ID: <20031023190421.GA4567@dreamland.darkstar.lan> Reply-To: kronos@kronoz.cjb.net References: <1066703516.646.24.camel@leguin> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <1066703516.646.24.camel@leguin> User-Agent: Mutt/1.4i Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Il Mon, Oct 20, 2003 at 07:31:56PM -0700, Eric Anholt ha scritto: > I recently committed a change to the DRM for Linux in DRI CVS that > converted it to use pci_driver and that probe system. Unfortunately, > we've found that there is a conflict between the DRM now and at least > the radeon framebuffer. Both want to attach to the same device, and > with pci_driver, the second one to come along doesn't get probe called > for that device. Is there any way to mark things shared, or in some > other way get the DRM to attach to a device that's already attached to, > in the new model? AFAIK no, pci_dev only stores one pointer to the driver. Two drivers fiddling with the same hw can be dangerous. What will happen if radeonfb starts using hw accel, touching registers without DRM knowing it? What is (IMHO) needed is a common layer that works with hardware and exposes an interface to both radeonfb and DRM. I think that Jon Smirl is working on something like this. Luca -- Reply-To: kronos@kronoz.cjb.net Home: http://kronoz.cjb.net "Sei l'unica donna della mia vita". (Adamo)