Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1161112AbaDBXWm (ORCPT ); Wed, 2 Apr 2014 19:22:42 -0400 Received: from mail-qc0-f176.google.com ([209.85.216.176]:50056 "EHLO mail-qc0-f176.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1161080AbaDBXWi (ORCPT ); Wed, 2 Apr 2014 19:22:38 -0400 MIME-Version: 1.0 In-Reply-To: References: <1395650554-31925-1-git-send-email-acourbot@nvidia.com> <1395650554-31925-12-git-send-email-acourbot@nvidia.com> <20140324231014.GI17218@mithrandir> Date: Thu, 3 Apr 2014 09:14:48 +1000 Message-ID: Subject: Re: [Nouveau] [PATCH 11/12] drm/nouveau: support GK20A in nouveau_accel_init() From: Ben Skeggs To: Ilia Mirkin Cc: Alexandre Courbot , "nouveau@lists.freedesktop.org" , "linux-kernel@vger.kernel.org" , "dri-devel@lists.freedesktop.org" , Ben Skeggs , "linux-tegra@vger.kernel.org" Content-Type: text/plain; charset=ISO-8859-1 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Thu, Apr 3, 2014 at 12:23 AM, Ilia Mirkin wrote: > On Wed, Apr 2, 2014 at 10:14 AM, Alexandre Courbot wrote: >>>>> + /* Need to figure out how to handle sw for gk20a */ >>>>> + if (device->chipset == 0xea) >>>>> + goto skip_sw_init; >>>> >>>> The commit message makes it sound like SW isn't needed since gk20a >>>> "lacks any display hardware". In that case the comment here doesn't make >>>> much sense. >> >> Correct. As far as I have looked (that is, not very far), SW methods >> are used for display-related functions, but there might be other >> use-cases too. Maybe someone who knows better can confirm? > > http://cgit.freedesktop.org/~darktama/nouveau/tree/nvkm/engine/software/nvc0.c > > Take a look at nvc0_software_mthd_mp_control -- that's used in the > mesa driver to... well, control those things :) They're related to > PGRAPH, which should be available on the GK20A. [Not sure what they do > though. One of them is about turning off error reporting.] Hm, I don't know why I didn't notice that was there for now.. I wouldn't be entirely surprised if nvidia had reserved method ids in the 3d object class that were supposed to be used for this, rather than from a sw object class.. > > -ilia -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/