From mboxrd@z Thu Jan 1 00:00:00 1970 From: Daniel Vetter Subject: Re: [RFC 4/4] drm: Add NVIDIA Tegra support Date: Wed, 11 Apr 2012 16:49:58 +0200 Message-ID: <20120411144958.GN4296@phenom.ffwll.local> References: <1334146230-1795-1-git-send-email-thierry.reding@avionic-design.de> <1334146230-1795-5-git-send-email-thierry.reding@avionic-design.de> <20120411124810.GK4296@phenom.ffwll.local> <20120411132326.GD27337@avionic-0098.adnet.avionic-design.de> <20120411133512.GL4296@phenom.ffwll.local> <20120411141108.GI27337@avionic-0098.adnet.avionic-design.de> <20120411143456.GM4296@phenom.ffwll.local> <20120411154309.1f04fb80@pyramind.ukuu.org.uk> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Return-path: Content-Disposition: inline In-Reply-To: <20120411154309.1f04fb80-38n7/U1jhRXW96NNrWNlrekiAK3p4hvP@public.gmane.org> Sender: linux-tegra-owner-u79uwXL29TY76Z2rM5mHXA@public.gmane.org To: Alan Cox Cc: Daniel Vetter , Thierry Reding , Stephen Warren , Joerg Roedel , devicetree-discuss-uLR06cmDAlY/bJ5BZ2RsiQ@public.gmane.org, dri-devel-PD4FTy7X32lNgt0PjOBp9y5qC8QIuHrW@public.gmane.org, Jon Mayo , iommu-cunTk1MwBs9QetFLy7KEm3xJsTq8ys+cHZ5vskTnxNA@public.gmane.org, Colin Cross , linux-tegra-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, Hiroshi Doyu List-Id: linux-tegra@vger.kernel.org On Wed, Apr 11, 2012 at 03:43:09PM +0100, Alan Cox wrote: > > Hm, in that case it looks like your iommu works more like the gtt on intel > > chips > > Don't overgeneralize there - on the GMA500/600 the GTT doesn't allow CPU > side access of the GTT map (ie you can't use it to linearise pages for > CPU view) and the 3600 is even stranger.... Sorry, I really try to totally ignore everything related to gma500 ;-) -Daniel -- Daniel Vetter Mail: daniel-/w4YWyX8dFk@public.gmane.org Mobile: +41 (0)79 365 57 48