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=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,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 E0D8EC2D0C3 for ; Wed, 18 Dec 2019 14:43:20 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id B38252176D for ; Wed, 18 Dec 2019 14:43:20 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1576680200; bh=iO+tOjqXZhOe4UTZKagiax9WLTYHh3JX3Ykh8qcBQNw=; h=Date:From:To:Cc:Subject:References:In-Reply-To:List-ID:From; b=d25Zvb8xf+2nb8wGPy47MVGG8fHpKExpCHmRAJhcm1rWYFQ5Qfuf95A/e3SBgzDMn tBkOBngZPn8fL31HUFqW3e5JDmbHwfXFaVeblDp9wX2cVXqz8grdDPBS7RS868eFwb AQ4eUBfUbaEVP5VWIGMr5ZY9+NlTcUbayl9zvP0I= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727176AbfLROnT (ORCPT ); Wed, 18 Dec 2019 09:43:19 -0500 Received: from mail.kernel.org ([198.145.29.99]:43904 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726856AbfLROnT (ORCPT ); Wed, 18 Dec 2019 09:43:19 -0500 Received: from localhost (83-86-89-107.cable.dynamic.v4.ziggo.nl [83.86.89.107]) (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 13E2721582; Wed, 18 Dec 2019 14:43:18 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1576680198; bh=iO+tOjqXZhOe4UTZKagiax9WLTYHh3JX3Ykh8qcBQNw=; h=Date:From:To:Cc:Subject:References:In-Reply-To:From; b=cNIE+m65yGEXDIT8q1cCn6jCzz+YbLIi6jcXwozIVcrH4rjlTlTkzfQuLgEvPj5Mx tUJg4m3NqoDIm1arP2yEPR0bI2gfMCcN4xPRjzYU4x1rDwcNCfyV7mYfGgqiRaNq+Z 9W7bn8XgTFtaD8dRKDtcpHfAdjF6DUYiwhpBsHWo= Date: Wed, 18 Dec 2019 15:43:16 +0100 From: Greg Kroah-Hartman To: Mika Westerberg Cc: linux-usb@vger.kernel.org, Andreas Noever , Michael Jamet , Yehezkel Bernat , Rajmohan Mani , Nicholas Johnson , Lukas Wunner , Alan Stern , Mario.Limonciello@dell.com, Anthony Wong , Oliver Neukum , Christian Kellner , "David S . Miller" , netdev@vger.kernel.org, linux-kernel@vger.kernel.org Subject: Re: [PATCH v2 0/9] thunderbolt: Add support for USB4 Message-ID: <20191218144316.GA321016@kroah.com> References: <20191217123345.31850-1-mika.westerberg@linux.intel.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20191217123345.31850-1-mika.westerberg@linux.intel.com> Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Tue, Dec 17, 2019 at 03:33:36PM +0300, Mika Westerberg wrote: > Hi all, > > USB4 is the public specification of Thunderbolt 3 protocol and can be > downloaded here: > > https://www.usb.org/sites/default/files/USB4%20Specification_1.zip > > USB4 is about tunneling different protocols over a single cable (in the > same way as Thunderbolt). The current USB4 spec supports PCIe, Display Port > and USB 3.x, and also software based protocols such as networking between > domains (hosts). > > So far PCs have been using firmware based Connection Manager (FW CM, ICM) > and Apple systems have been using software based one (SW CM, ECM). A > Connection Manager is the entity that handles creation of different tunnel > types through the USB4 (and Thunderbolt) fabric. With USB4 the plan is to > have software based Connection Manager everywhere but some early systems > will come with firmware based connection manager. > > Current Linux Thunderbolt driver supports both "modes" and can detect which > one to use dynamically. > > This series extends the Linux Thunderbolt driver to support USB4 compliant > hosts and devices (this applies to both firmware and software based > connection managers). USB4 Features enabled by this series include: > > - PCIe tunneling > - Display Port tunneling > - USB 3.x tunneling > - P2P networking (implemented in drivers/net/thunderbolt.c) > - Host and device NVM firmware upgrade > > Power management support is still work in progress. It will be submitted > later on once properly tested. > > The previous versions of the series can be seen here: > > v1: https://lore.kernel.org/linux-usb/20191023112154.64235-1-mika.westerberg@linux.intel.com/ > RFC: https://lore.kernel.org/lkml/20191001113830.13028-1-mika.westerberg@linux.intel.com/ > > Changes from v1: > > * Rebased on top of v5.5-rc2. > * Add a new patch to populate PG field in hotplug ack packet. > * Rename the networking driver Kconfig symbol to CONFIG_USB4_NET to > follow the driver itself (CONFIG_USB4). At a quick glance, this looks nice and sane, good job. I've taken all of these into my tree, let's see if 0-day has any problems with it :) thanks, greg k-h