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=-0.8 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS autolearn=no 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 A08A8C54FD0 for ; Mon, 27 Apr 2020 17:07:52 +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 779B920738 for ; Mon, 27 Apr 2020 17:07:52 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 779B920738 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=intel.com Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=intel-gfx-bounces@lists.freedesktop.org Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 154E36E342; Mon, 27 Apr 2020 17:07:52 +0000 (UTC) Received: from mga01.intel.com (mga01.intel.com [192.55.52.88]) by gabe.freedesktop.org (Postfix) with ESMTPS id DA2996E342 for ; Mon, 27 Apr 2020 17:07:50 +0000 (UTC) IronPort-SDR: B4nFe13ctVu4SK6N3pg2pRNGwrBKlNqgQCxSXpTN2EOBjchMgDp93lUXrcXD0ycqxsDRegsS1p +O1xVoxnYW9A== X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False Received: from orsmga008.jf.intel.com ([10.7.209.65]) by fmsmga101.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 27 Apr 2020 10:07:50 -0700 IronPort-SDR: ru8y6koDooEZl6njh7CRx9xtm4i0nDeN66BfF0h0zF9mEGzQdesYszgwjUJyUx9X3FpJpe0iMM iaJsj+NgcU+A== X-IronPort-AV: E=Sophos;i="5.73,324,1583222400"; d="scan'208";a="293595341" Received: from rdvivi-losangeles.jf.intel.com (HELO intel.com) ([10.165.21.202]) by orsmga008-auth.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 27 Apr 2020 10:07:50 -0700 Date: Mon, 27 Apr 2020 10:07:06 -0700 From: Rodrigo Vivi To: Alexei Podtelezhnikov Message-ID: <20200427170706.GB3697495@intel.com> References: <20200427032232.4307-1-apodtele@gmail.com> <20200427140248.GG6112@intel.com> <158799689628.17035.14733867368309109586@build.alporthouse.com> <158799871806.17035.9616562654177490399@build.alporthouse.com> MIME-Version: 1.0 Content-Disposition: inline In-Reply-To: Subject: Re: [Intel-gfx] [patch] PCI ID review X-BeenThere: intel-gfx@lists.freedesktop.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Intel graphics driver community testing & development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: intel-gfx@lists.freedesktop.org, Chris Wilson Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Errors-To: intel-gfx-bounces@lists.freedesktop.org Sender: "Intel-gfx" On Mon, Apr 27, 2020 at 11:18:46AM -0400, Alexei Podtelezhnikov wrote: > On Mon, Apr 27, 2020 at 10:45 AM Chris Wilson wrote: > > > > Quoting Alexei Podtelezhnikov (2020-04-27 15:40:42) > > > > > > > > These do not exist. They are fake PCI-ID for Windows95 multi monitor. > > > > The single device appears twice on the bus as a second function. We > > > > never had that restriction and could do multiple monitors on the single > > > > device. > > > > > > Windows 10 drivers list them, they do show up on lspci and I'll quote > > > from Atom datasheet. > > > "This register is unique in Function 1 (the Function 0 DID is > > > separate). This difference in Device ID is necessary for allowing > > > distinct Plug and Play enumeration of function 1 when both function 0 > > > and function 1 have the same class code." > > > Whatever this means. > > > > It means it's a hack for the Window's driver. There is no HW behind it. > > Intel talks about two separate engines (threads?) > https://www.intel.com/content/www/us/en/support/articles/000005880/graphics-drivers/legacy-graphics.html > https://www.intel.com/content/www/us/en/support/articles/000005747/graphics-drivers.html > Still not buying? Hi Alexei, thanks for these. With this information in mind it looks very wrong to simply add the PCI ID. ADD2 device is not supported by i915. I don't believe it will be as simple as just adding the PCI ID here. > _______________________________________________ > Intel-gfx mailing list > Intel-gfx@lists.freedesktop.org > https://lists.freedesktop.org/mailman/listinfo/intel-gfx _______________________________________________ Intel-gfx mailing list Intel-gfx@lists.freedesktop.org https://lists.freedesktop.org/mailman/listinfo/intel-gfx