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=-5.5 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED, USER_AGENT_SANE_1 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 CFE3FC41604 for ; Wed, 7 Oct 2020 16:23:58 +0000 (UTC) Received: from alsa0.perex.cz (alsa0.perex.cz [77.48.224.243]) (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 ABFF421707 for ; Wed, 7 Oct 2020 16:23:57 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=alsa-project.org header.i=@alsa-project.org header.b="FklSqPR3"; dkim=fail reason="signature verification failed" (1024-bit key) header.d=kernel.org header.i=@kernel.org header.b="ffkm/wdP" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org ABFF421707 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=kernel.org Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=alsa-devel-bounces@alsa-project.org Received: from alsa1.perex.cz (alsa1.perex.cz [207.180.221.201]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by alsa0.perex.cz (Postfix) with ESMTPS id E7A0016B3; Wed, 7 Oct 2020 18:23:05 +0200 (CEST) DKIM-Filter: OpenDKIM Filter v2.11.0 alsa0.perex.cz E7A0016B3 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=alsa-project.org; s=default; t=1602087836; bh=3wrrcD3lH8xpx+ROvHVv6b93NZnSzHjbk1/6UsjW6wQ=; h=Date:From:To:Subject:References:In-Reply-To:Cc:List-Id: List-Unsubscribe:List-Archive:List-Post:List-Help:List-Subscribe: From; b=FklSqPR3RxWfmhhvqFoKr6PQN13gPefXiNqBi6R+c9NU5O7HqOZppx7eueKMHdOVx jTqEERcYtOLNZ1Y/KMalQUID4JN+A4+o3L3ZOtI8X2/eHD0vXcsvSRUvpkNPdhyztX F1twd4pcrbFLSL5NEOisGXfRuEJiPK9wqHmHoUiI= Received: from alsa1.perex.cz (localhost.localdomain [127.0.0.1]) by alsa1.perex.cz (Postfix) with ESMTP id 86F8CF80090; Wed, 7 Oct 2020 18:23:05 +0200 (CEST) Received: by alsa1.perex.cz (Postfix, from userid 50401) id 315D0F80087; Wed, 7 Oct 2020 18:23:04 +0200 (CEST) Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by alsa1.perex.cz (Postfix) with ESMTPS id 32372F80087 for ; Wed, 7 Oct 2020 18:22:57 +0200 (CEST) DKIM-Filter: OpenDKIM Filter v2.11.0 alsa1.perex.cz 32372F80087 Authentication-Results: alsa1.perex.cz; dkim=pass (1024-bit key) header.d=kernel.org header.i=@kernel.org header.b="ffkm/wdP" Received: from localhost (fw-tnat.cambridge.arm.com [217.140.96.140]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id 49BAC215A4; Wed, 7 Oct 2020 16:22:54 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1602087774; bh=3wrrcD3lH8xpx+ROvHVv6b93NZnSzHjbk1/6UsjW6wQ=; h=Date:From:To:Cc:Subject:References:In-Reply-To:From; b=ffkm/wdPG/gpHfJFBx2gBgQiTl9tiW37wxu6O+DojB1NIHxNphvaJpfCMfZSJoUgg 8r9i+FOII/92QwE+YDyL8zqdoDj24CAAyoiEyXCTMEMAKHSnrKgKYRZ8qyMu2HIk+p KP9hlUiPnKiB1IDCvFomEicTF5r9oX7KeDgXIxqw= Date: Wed, 7 Oct 2020 17:22:52 +0100 From: Mark Brown To: Dan Williams Subject: Re: [PATCH 0/6] Ancillary bus implementation and SOF multi-client support Message-ID: <20201007162251.GB5030@sirena.org.uk> References: <20200930225051.889607-1-david.m.ertman@intel.com> <20201001071403.GC31191@kroah.com> <20201003090855.GD114893@kroah.com> <20201005112547.GA401816@kroah.com> <20201007091443.GA822254@kroah.com> MIME-Version: 1.0 Content-Type: multipart/signed; micalg=pgp-sha512; protocol="application/pgp-signature"; boundary="mxv5cy4qt+RJ9ypb" Content-Disposition: inline In-Reply-To: X-Cookie: Two heads are more numerous than one. User-Agent: Mutt/1.10.1 (2018-07-13) Cc: "alsa-devel@alsa-project.org" , "tiwai@suse.de" , "gregkh@linuxfoundation.org" , "Sridharan, Ranjani" , "pierre-louis.bossart@linux.intel.com" , "parav@nvidia.com" , "jgg@nvidia.com" , "Ertman, David M" X-BeenThere: alsa-devel@alsa-project.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: "Alsa-devel mailing list for ALSA developers - http://www.alsa-project.org" List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: alsa-devel-bounces@alsa-project.org Sender: "Alsa-devel" --mxv5cy4qt+RJ9ypb Content-Type: text/plain; charset=us-ascii Content-Disposition: inline On Wed, Oct 07, 2020 at 09:19:32AM -0700, Dan Williams wrote: > On Wed, Oct 7, 2020 at 2:14 AM gregkh@linuxfoundation.org > > "virtual" here means "not real" :) > Which of these aux device use cases is not a real device? One of my > planned usages for this facility is for the NPEM (Native PCIE > Enclosure Management) mechanism that can appear on any PCIE > bridge/endpoint. While it is true that the NPEM register set does not > get its own PCI-b:d:f address on the host bus, it is still > discoverable by a standard enumeration scheme. It is real auxiliary > device functionality that can appear on any PCIE device where the > kernel can now have one common NPEM driver for all instances in the > topology. Some if not all of the SOF cases are entirely software defined by the firmware downloaded to the audio DSPs. --mxv5cy4qt+RJ9ypb Content-Type: application/pgp-signature; name="signature.asc" -----BEGIN PGP SIGNATURE----- iQEzBAABCgAdFiEEreZoqmdXGLWf4p/qJNaLcl1Uh9AFAl9961sACgkQJNaLcl1U h9DlXwgAgDGmylapX/nx3eTwZNpY2SkpDt2dWNb1vUqp7z1c1u/I2SfGxl+fsbGH iUOET7reLpVaok4ooy8XVeOaJwql/7rRbUb4oY9zWlTp4tw8G8GtCBMtU/Ff2Imm ItrTGuYg9vhTMplwm3+2gug1mGnDlqzTykeufznPz37VdoAbxR0p+M2SwUNzSYm+ kmhIZqiy6DbFzeTXt9w4u6ZNepQMKGkrQeGK5eO1zj38vCHrvrdrafHkRaIR76nv cu1GJuEBlx2x+8z7GprFwWl3khil6P/Td75HgIcIYADMqFb9ZENAQh2Pe8/vK/QQ ZzFir6Rdz9zKwqPHoJMW8iXYTj+BcQ== =0Bcb -----END PGP SIGNATURE----- --mxv5cy4qt+RJ9ypb--