From patchwork Sat Jun 5 00:23:55 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Vinicius Costa Gomes X-Patchwork-Id: 12300943 X-Patchwork-Delegate: bhelgaas@google.com 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=-16.7 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_NONE,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 9399DC48BCD for ; Sat, 5 Jun 2021 00:24:12 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 76E44613C9 for ; Sat, 5 Jun 2021 00:24:12 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229906AbhFEAZ6 (ORCPT ); Fri, 4 Jun 2021 20:25:58 -0400 Received: from mga02.intel.com ([134.134.136.20]:53213 "EHLO mga02.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S230169AbhFEAZ5 (ORCPT ); Fri, 4 Jun 2021 20:25:57 -0400 IronPort-SDR: NVvloYRae+ZyU/Smh5gJU4K8UPtSNmUNrsByjpF8IVtxPbCkm5UdCewVwj0FiRZSnQa1TpRRoi aIFAxwqWa33g== X-IronPort-AV: E=McAfee;i="6200,9189,10005"; a="191505928" X-IronPort-AV: E=Sophos;i="5.83,249,1616482800"; d="scan'208";a="191505928" Received: from orsmga008.jf.intel.com ([10.7.209.65]) by orsmga101.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 04 Jun 2021 17:24:10 -0700 IronPort-SDR: z6QmGzKs64cXTDVV87TY/wK9bX5xy67uCv27SJu+wez5AAGE0rFUvgrJFALvjN1CRaCzZ3KaQ2 V3OWxFj+duvw== X-IronPort-AV: E=Sophos;i="5.83,249,1616482800"; d="scan'208";a="446862953" Received: from lmrivera-mobl.amr.corp.intel.com (HELO localhost.localdomain) ([10.251.24.65]) by orsmga008-auth.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 04 Jun 2021 17:24:09 -0700 From: Vinicius Costa Gomes To: intel-wired-lan@lists.osuosl.org Cc: Vinicius Costa Gomes , sasha.neftin@intel.com, anthony.l.nguyen@intel.com, linux-pci@vger.kernel.org, bhelgaas@google.com, netdev@vger.kernel.org, mlichvar@redhat.com, richardcochran@gmail.com, hch@infradead.org, helgaas@kernel.org Subject: [PATCH next-queue v5 3/4] igc: Enable PCIe PTM Date: Fri, 4 Jun 2021 17:23:55 -0700 Message-Id: <20210605002356.3996853-4-vinicius.gomes@intel.com> X-Mailer: git-send-email 2.31.1 In-Reply-To: <20210605002356.3996853-1-vinicius.gomes@intel.com> References: <20210605002356.3996853-1-vinicius.gomes@intel.com> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-pci@vger.kernel.org Enables PCIe PTM (Precision Time Measurement) support in the igc driver. Notifies the PCI devices that PCIe PTM should be enabled. PCIe PTM is similar protocol to PTP (Precision Time Protocol) running in the PCIe fabric, it allows devices to report time measurements from their internal clocks and the correlation with the PCIe root clock. The i225 NIC exposes some registers that expose those time measurements, those registers will be used, in later patches, to implement the PTP_SYS_OFFSET_PRECISE ioctl(). Signed-off-by: Vinicius Costa Gomes --- drivers/net/ethernet/intel/igc/igc_main.c | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/drivers/net/ethernet/intel/igc/igc_main.c b/drivers/net/ethernet/intel/igc/igc_main.c index a05e6d8ec660..f23d0303e53b 100644 --- a/drivers/net/ethernet/intel/igc/igc_main.c +++ b/drivers/net/ethernet/intel/igc/igc_main.c @@ -12,6 +12,8 @@ #include #include #include +#include + #include #include "igc.h" @@ -5864,6 +5866,10 @@ static int igc_probe(struct pci_dev *pdev, pci_enable_pcie_error_reporting(pdev); + err = pci_enable_ptm(pdev, NULL); + if (err < 0) + dev_err(&pdev->dev, "PTM not supported\n"); + pci_set_master(pdev); err = -ENOMEM;