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=-2.6 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS, 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 F29A7C433E1 for ; Thu, 2 Jul 2020 11:15:27 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id C73972075D for ; Thu, 2 Jul 2020 11:15:27 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1593688527; bh=T46/s05JJaZY2ZsHB2+vCYi4rc2Z76kKYeyjd9/b608=; h=Date:From:To:Cc:Subject:References:In-Reply-To:List-ID:From; b=VxOIXTvy/I6P5NqF3KIrPDUITN7DsB/5u4oLKhUp4mS5lR0TAGHFUEYbyuWr/6rWr FSI5AvjKeZ96KNBBdLMMoY68OeJ7Xf3ZwYFfAr7ZxSOfefl5ongLazC8/lk1xFXf7t ThG7DYiiU7R6xupgN6YLf1ukLnKqrph34WYlVjIQ= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728533AbgGBLP0 (ORCPT ); Thu, 2 Jul 2020 07:15:26 -0400 Received: from mail.kernel.org ([198.145.29.99]:45312 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726483AbgGBLP0 (ORCPT ); Thu, 2 Jul 2020 07:15:26 -0400 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 39A572070C; Thu, 2 Jul 2020 11:15:24 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1593688524; bh=T46/s05JJaZY2ZsHB2+vCYi4rc2Z76kKYeyjd9/b608=; h=Date:From:To:Cc:Subject:References:In-Reply-To:From; b=gYGVYjx2o+x8wg68Phh08ojPd0/BADKrvWSBawDOYoPfijtZHJ8u0lX3jtYM9Xffv QDVI9AS8f47OCMoW7Q6Z0lofKG1JRc0mHxla4MXRXPpIWec/M02j21S73Ok0S1lDur VZmQf/hsuT3k/qSXB5KFReklPLuh7eO1OGar5s2g= Date: Thu, 2 Jul 2020 12:15:22 +0100 From: Mark Brown To: Jason Gunthorpe Cc: Ranjani Sridharan , Greg KH , Takashi Iwai , Pierre-Louis Bossart , Jeff Kirsher , davem@davemloft.net, netdev@vger.kernel.org, linux-rdma@vger.kernel.org, nhorman@redhat.com, sassmann@redhat.com, Fred Oh , lee.jones@linaro.org Subject: Re: [net-next v4 10/12] ASoC: SOF: Introduce descriptors for SOF client Message-ID: <20200702111522.GA4483@sirena.org.uk> References: <20200527071733.GB52617@kroah.com> <20200629203317.GM5499@sirena.org.uk> <20200629225959.GF25301@ziepe.ca> <20200630103141.GA5272@sirena.org.uk> <20200630113245.GG25301@ziepe.ca> <936d8b1cbd7a598327e1b247441fa055d7083cb6.camel@linux.intel.com> <20200630172710.GJ25301@ziepe.ca> <20200701095049.GA5988@sirena.org.uk> <20200701233250.GP25301@ziepe.ca> MIME-Version: 1.0 Content-Type: multipart/signed; micalg=pgp-sha512; protocol="application/pgp-signature"; boundary="gKMricLos+KVdGMg" Content-Disposition: inline In-Reply-To: <20200701233250.GP25301@ziepe.ca> X-Cookie: I'm rated PG-34!! User-Agent: Mutt/1.10.1 (2018-07-13) Sender: netdev-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org --gKMricLos+KVdGMg Content-Type: text/plain; charset=us-ascii Content-Disposition: inline On Wed, Jul 01, 2020 at 08:32:50PM -0300, Jason Gunthorpe wrote: > On Wed, Jul 01, 2020 at 10:50:49AM +0100, Mark Brown wrote: > > Another part of this is that there's not a clean cut over between MMIO > > and not using any hardware resources at all - for example a device might > > be connected over I2C but use resources to distribute interrupts to > > subdevices. > How does the subdevice do anything if it only received an interrupt? Via some bus that isn't memory mapped like I2C or SPI. > That sounds rather more like virtual bus's use case.. These are very much physical devices often with distinct IPs in distinct address ranges and so on, it's just that those addresses happen not to be on buses it is sensible to memory map. --gKMricLos+KVdGMg Content-Type: application/pgp-signature; name="signature.asc" -----BEGIN PGP SIGNATURE----- iQEzBAABCgAdFiEEreZoqmdXGLWf4p/qJNaLcl1Uh9AFAl79wckACgkQJNaLcl1U h9CHqwf9FtZW3uRoi7muHR8kqXkUw0BLi3DH3/wixl7IIJS7enYClmelX0TnUHCW KCS2vc3hU1RKNFLComkzWs6rQoY8extTzFMvz56nHSoxzAY8oMDRyqiR1uRJB30l FCbvGaZg/m/q0rMpsGG7prF17Kf5e3JzRTPMWR2mTeZARDpkftWeFwAPBeAqD2vv YopwSL5iwcxzpxS7S8hhQP3oyLr+MXSgiSbhBt0uIfBtXrpJkuxGWQXOS/JePmUm 1M7S4XTtVOD0vtdG796x/LZfYQ8edWuKS6p+FfZhRES0y6t8j0OettPiWr+SC85c e7AXbLy/51pqnBAJI8bAPjlGWzYiyw== =vMGu -----END PGP SIGNATURE----- --gKMricLos+KVdGMg--