From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-5.3 required=3.0 tests=DKIM_ADSP_CUSTOM_MED, DKIM_INVALID,DKIM_SIGNED,FREEMAIL_FORGED_FROMDOMAIN,FREEMAIL_FROM, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,MENTIONS_GIT_HOSTING, SPF_HELO_NONE,SPF_PASS autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 93E14C47255 for ; Mon, 11 May 2020 20:46:34 +0000 (UTC) Received: from gabe.freedesktop.org (gabe.freedesktop.org [131.252.210.177]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 66E84206D7 for ; Mon, 11 May 2020 20:46:34 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=fail reason="signature verification failed" (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b="onbU+uII" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 66E84206D7 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=gmail.com Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=dri-devel-bounces@lists.freedesktop.org Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id CC63C89739; Mon, 11 May 2020 20:46:33 +0000 (UTC) Received: from mail-wr1-x443.google.com (mail-wr1-x443.google.com [IPv6:2a00:1450:4864:20::443]) by gabe.freedesktop.org (Postfix) with ESMTPS id 7242E89739 for ; Mon, 11 May 2020 20:46:32 +0000 (UTC) Received: by mail-wr1-x443.google.com with SMTP id l11so6792548wru.0 for ; Mon, 11 May 2020 13:46:32 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=mime-version:references:in-reply-to:from:date:message-id:subject:to :cc; bh=qori0jEe8833K+xXsk8AZatxV7QbwOqjDoJDqGMAGk4=; b=onbU+uIICwQ+nUf6GbjAMFfYyrBsWBEDvkqoWG3DCPjlgEc/KBWAmC6KWvo737c5Sk cXjeFnPO0ahHjqw1KusWmyZeERtyWKjaMaUD1BbZ4x1nXSVlVEtSBrEFL1jszptV8p/t Mp6+zT/rJQGCSGye89mRldqHURuEH62QZpd2it/BEcsf23QRhCUDH9lGMvWjtaCHOWFL ZmUWQh5KywWB5xFNwDjnouMD+2RzFPsnX/8fsImVV9Yc6T7Wksbbnladgoz26IBveE1/ OhygKIsTHRALBWr1JWTKuOyo43a3IbLgeZrA0hM3cEV6iaG2SP86JdVCXA3BXEn6A1jb hDZg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:mime-version:references:in-reply-to:from:date :message-id:subject:to:cc; bh=qori0jEe8833K+xXsk8AZatxV7QbwOqjDoJDqGMAGk4=; b=Ps/BzBoNPT9629hglOimcr0pNQfscchBsXMkD6oif9qY28U45YwDGrLqt+3p1jrLZY uOF/fZ15OHCgIFIK23upTYuDsVWeGxoy3FVxyt26JZZPHvPWoi0+uloxlYSHz1704Gs8 me3BLC+lkGCwOQLtDoPRsOC4qtD9c14WOI8ZNDzWvmI+wCGuF6vJZq9xep+fK2ckIrTT 0UGeJlUIUqedgPF5Ucadr2UL4S1PaatR8oad2yCnC/Hm8iSnjfwuGk8/ip/MC2YfBC+Q rtBX44VZIZrAIggltvMZOuBvwTJycWGR11ujqYt77rjfdr/IggQJzTNSgdRCUVtb7hhU NZwQ== X-Gm-Message-State: AGi0PuZT6M9Bbk5m2Mxied4GWvl62MwjsQ1AW/QDypAH9Nsq9Q1ZImBr RD2Rdc+M0aJZkICQQl4rjBgz2WbzM+Rvh8D8F+E= X-Google-Smtp-Source: APiQypJZPeU/MpVY/LFr2d/TCmjmMDT6PXHFvfzTOPtb8zQaRTwsgb4RqI65YXvcM2+FRhTApNLBLkCRdeL3A4URy78= X-Received: by 2002:a5d:4389:: with SMTP id i9mr21645732wrq.374.1589229991186; Mon, 11 May 2020 13:46:31 -0700 (PDT) MIME-Version: 1.0 References: <21a0d2ba-c27d-6b12-678e-89c04dc64a82@physik.fu-berlin.de> In-Reply-To: <21a0d2ba-c27d-6b12-678e-89c04dc64a82@physik.fu-berlin.de> From: Alex Deucher Date: Mon, 11 May 2020 16:46:19 -0400 Message-ID: Subject: Re: [RFC] Remove AGP support from Radeon/Nouveau/TTM To: John Paul Adrian Glaubitz X-BeenThere: dri-devel@lists.freedesktop.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Direct Rendering Infrastructure - Development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: =?UTF-8?Q?Christian_K=C3=B6nig?= , "debian-powerpc@lists.debian.org" , Maling list - DRI developers Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" On Mon, May 11, 2020 at 4:41 PM John Paul Adrian Glaubitz wrote: > > On 5/11/20 10:05 PM, Alex Deucher wrote: > >>> For Nouveau I'm not 100% sure, but from the code it of hand looks like we can do it similar to Radeon. > >>> > >>> Please comment what you think about this. > >> > >> I would be against such a move as AGP graphics is still used by people running the powerpc > >> and ppc64 Debian ports on their vintage hardware [1]. > >> > >> I have also CC'ed the debian-powerpc mailing list so that other users can voice their > >> opinion. > > > > Note there is no loss of functionality here, at least on radeon > > hardware. It just comes down to which MMU gets used for access to > > system memory, the AGP MMU on the chipset or the MMU built into the > > GPU. On powerpc hardware, AGP has been particularly unstable, and > > IIRC, AGP has been disabled by default on radeon on powerpc for a > > while. > Do you have a code reference at hand for this bit of information (AGP > being disabled on Macs)? It was disabled 2 years ago: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=037d1a66ae640ca2723f47c0115ffa9e603699b3 Alex > > Thanks, > Adrian > > -- > .''`. John Paul Adrian Glaubitz > : :' : Debian Developer - glaubitz@debian.org > `. `' Freie Universitaet Berlin - glaubitz@physik.fu-berlin.de > `- GPG: 62FF 8A75 84E0 2956 9546 0006 7426 3B37 F5B5 F913 _______________________________________________ dri-devel mailing list dri-devel@lists.freedesktop.org https://lists.freedesktop.org/mailman/listinfo/dri-devel