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=-3.0 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,SPF_PASS,USER_AGENT_GIT 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 4F5AFC282C2 for ; Wed, 6 Feb 2019 13:23:41 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 235F520844 for ; Wed, 6 Feb 2019 13:23:41 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1731241AbfBFNXi (ORCPT ); Wed, 6 Feb 2019 08:23:38 -0500 Received: from mga03.intel.com ([134.134.136.65]:26739 "EHLO mga03.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726716AbfBFNRo (ORCPT ); Wed, 6 Feb 2019 08:17:44 -0500 X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False Received: from fmsmga007.fm.intel.com ([10.253.24.52]) by orsmga103.jf.intel.com with ESMTP/TLS/DHE-RSA-AES256-GCM-SHA384; 06 Feb 2019 05:17:41 -0800 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.58,340,1544515200"; d="scan'208";a="120384276" Received: from black.fi.intel.com ([10.237.72.28]) by fmsmga007.fm.intel.com with ESMTP; 06 Feb 2019 05:17:39 -0800 Received: by black.fi.intel.com (Postfix, from userid 1001) id 66C29E7; Wed, 6 Feb 2019 15:17:38 +0200 (EET) From: Mika Westerberg To: linux-kernel@vger.kernel.org Cc: Michael Jamet , Yehezkel Bernat , Andreas Noever , Lukas Wunner , "David S . Miller" , Mika Westerberg , Andy Shevchenko , netdev@vger.kernel.org Subject: [PATCH v2 00/28] thunderbolt: Software connection manager improvements Date: Wed, 6 Feb 2019 16:17:10 +0300 Message-Id: <20190206131738.43696-1-mika.westerberg@linux.intel.com> X-Mailer: git-send-email 2.20.1 MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Hi, Software connection manager (drivers/thunderbolt/tb.c) is used on older Apple hardware with Light Ridge, Cactus Ridge or Falcon Ridge controllers to create PCIe tunnels when a Thunderbolt device is connected. Currently only one PCIe tunnel is supported. On newer Alpine Ridge based Apple systems the driver starts the firmware which then takes care creating tunnels. This series improves the software connection manager so that it will support: - Full PCIe daisy chains (up to 6 devices) - Display Port tunneling - P2P networking We also add support for Titan Ridge based Apple systems where we can use the same flows than with Alpine Ridge to start the firmware. Note in order to prevent possible DMA attacks on these systems we should make sure IOMMU is enabled. One option is to force dmar_platform_optin() return true on Apple hardware. However, it is not part of this series. I'm trusting people using Linux on such systems to take care of it. :-) Previous version of the patch series can be viewed here: https://lkml.org/lkml/2019/1/29/924 Changes from v1: * Added ACK from David * Add constant (TMU_ACCESS_EN) for BIT(20) when TMU access is enabled. We keep it in cap.c close to the LR/ER workaround. Also we enable/disable only during capability walk. If it turns we need to have it enabled elsewhere we can move it to switch.c and enable just once during switch enumeration. * Use 0 to mean no cap_adap instead of negative value. This follows cap_phy. * Use correct PCI IDs (_BRIDGE) in the last patch where we start firmware on Titan Ridge. It wrongly used NHI PCI IDs in v1. Mika Westerberg (28): net: thunderbolt: Unregister ThunderboltIP protocol handler when suspending thunderbolt: Do not allocate switch if depth is greater than 6 thunderbolt: Enable TMU access when accessing port space on legacy devices thunderbolt: Add dummy read after port capability list walk on Light Ridge thunderbolt: Move LC specific functionality into a separate file thunderbolt: Configure lanes when switch is initialized thunderbolt: Set sleep bit when suspending switch thunderbolt: Properly disable path thunderbolt: Cache adapter specific capability offset into struct port thunderbolt: Rename tunnel_pci to tunnel thunderbolt: Generalize tunnel creation functionality thunderbolt: Add functions for allocating and releasing hop IDs thunderbolt: Add helper function to iterate from one port to another thunderbolt: Extend tunnel creation to more than 2 adjacent switches thunderbolt: Deactivate all paths before restarting them thunderbolt: Discover preboot PCIe paths the boot firmware established thunderbolt: Add support for full PCIe daisy chains thunderbolt: Scan only valid NULL adapter ports in hotplug thunderbolt: Generalize port finding routines to support all port types thunderbolt: Rework NFC credits handling thunderbolt: Add support for Display Port tunnels thunderbolt: Run tb_xdp_handle_request() in system workqueue thunderbolt: Add XDomain UUID exchange support thunderbolt: Add support for DMA tunnels thunderbolt: Make tb_switch_alloc() return ERR_PTR() thunderbolt: Add support for XDomain connections thunderbolt: Make rest of the logging to happen at debug level thunderbolt: Start firmware on Titan Ridge Apple systems drivers/net/thunderbolt.c | 3 + drivers/thunderbolt/Makefile | 4 +- drivers/thunderbolt/cap.c | 90 +++- drivers/thunderbolt/ctl.c | 2 +- drivers/thunderbolt/icm.c | 15 +- drivers/thunderbolt/lc.c | 179 ++++++++ drivers/thunderbolt/path.c | 326 +++++++++++++-- drivers/thunderbolt/switch.c | 466 ++++++++++++++++++--- drivers/thunderbolt/tb.c | 529 ++++++++++++++++++------ drivers/thunderbolt/tb.h | 67 ++- drivers/thunderbolt/tb_msgs.h | 11 + drivers/thunderbolt/tb_regs.h | 50 ++- drivers/thunderbolt/tunnel.c | 681 +++++++++++++++++++++++++++++++ drivers/thunderbolt/tunnel.h | 75 ++++ drivers/thunderbolt/tunnel_pci.c | 226 ---------- drivers/thunderbolt/tunnel_pci.h | 31 -- drivers/thunderbolt/xdomain.c | 142 ++++++- include/linux/thunderbolt.h | 8 + 18 files changed, 2389 insertions(+), 516 deletions(-) create mode 100644 drivers/thunderbolt/lc.c create mode 100644 drivers/thunderbolt/tunnel.c create mode 100644 drivers/thunderbolt/tunnel.h delete mode 100644 drivers/thunderbolt/tunnel_pci.c delete mode 100644 drivers/thunderbolt/tunnel_pci.h -- 2.20.1