From patchwork Wed Nov 13 15:46:07 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "Olech, Milena" X-Patchwork-Id: 13873946 Received: from mgamail.intel.com (mgamail.intel.com [192.198.163.8]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 70EA070808 for ; Wed, 13 Nov 2024 15:48:14 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=192.198.163.8 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1731512896; cv=none; b=kh3MSjJCEyqtsy0lbGAOQbB880Q4ab4VM+XGpNGtGoy54o3Dn2KTmi2/Jvgd/AOajTuzk4oTJhvKPVqQQa9MvoK1yi8NIFWXCW1yL/B4KJDqCEEFE/hquejQuXWxqSZRVBiYcH2B7FtsLVX4McLO+8KJ8asvi1E791uWz4pH1+E= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1731512896; c=relaxed/simple; bh=qHG84sX6f3ufA/50flHWraVatdJwVZN4tNgkvWeT4mo=; h=From:To:Cc:Subject:Date:Message-Id:MIME-Version; b=IoJRiqKGHQLNpVCcnDB3KEMS6WIOyuvxzF1R94FU0UCsLI2u5zQkJQ6629/4QnF25+UiJZU5RDb88651LAtDJBodkHmz3SBXRGGXNVLDUFpO2KkzIGwRdvgNOJn1NT11EYi/Padhb8wq1iEdVaozhNCZ0AlZ+Md46R1PY/522jg= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=intel.com; spf=pass smtp.mailfrom=intel.com; dkim=pass (2048-bit key) header.d=intel.com header.i=@intel.com header.b=i+bekai5; arc=none smtp.client-ip=192.198.163.8 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=intel.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=intel.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=intel.com header.i=@intel.com header.b="i+bekai5" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1731512894; x=1763048894; h=from:to:cc:subject:date:message-id:mime-version: content-transfer-encoding; bh=qHG84sX6f3ufA/50flHWraVatdJwVZN4tNgkvWeT4mo=; b=i+bekai5i/Ii+3RIV//tlH+VX30h3J0dwByZ8iulFKaC1yWgVBYI6OaE p7atGkimMqp4NIyZynW9F9C50N9LLJwMWasPem2AWvgmD/opDy+Ot9y4A WlcVKmgxNJ0yqV3wG2GeHq12UWkwBWJiH+RUcrez+8IUtYVeqvCQQp99f +/56vhXYPNmbf6Q2AMBys0Zj2jrlZGm3jcri6HNZCs1cAHNCm7E6hUHR4 vBTjlAsyMrjKwZv3GQRTqNXQVJRnEn2O2pKn+bYIdN8qWNCH0IhkKwzzX Ytyhmbr5HQgO5OChZDj75R3E1W+zj6ZXzI07hcwHadnQleNyHg6tETFXZ w==; X-CSE-ConnectionGUID: Z6Mq0CUOTDqhMtaIsdRCVg== X-CSE-MsgGUID: oYVyUf1VRlycGNw2t+3Xbw== X-IronPort-AV: E=McAfee;i="6700,10204,11254"; a="48918964" X-IronPort-AV: E=Sophos;i="6.12,151,1728975600"; d="scan'208";a="48918964" Received: from orviesa005.jf.intel.com ([10.64.159.145]) by fmvoesa102.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 13 Nov 2024 07:48:13 -0800 X-CSE-ConnectionGUID: Xg9wFP+qSO27UZWkqjkqIA== X-CSE-MsgGUID: 0+ovJoaTRQuBKy5FeAZQGQ== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="6.12,151,1728975600"; d="scan'208";a="92869217" Received: from unknown (HELO localhost.igk.intel.com) ([10.102.22.54]) by orviesa005.jf.intel.com with ESMTP; 13 Nov 2024 07:48:12 -0800 From: Milena Olech To: intel-wired-lan@lists.osuosl.org Cc: netdev@vger.kernel.org, anthony.l.nguyen@intel.com, przemyslaw.kitszel@intel.com, Milena Olech Subject: [PATCH iwl-net 00/10] initial PTP support Date: Wed, 13 Nov 2024 16:46:07 +0100 Message-Id: <20241113154616.2493297-1-milena.olech@intel.com> X-Mailer: git-send-email 2.31.1 Precedence: bulk X-Mailing-List: netdev@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Patchwork-Delegate: kuba@kernel.org This patch series introduces support for Precision Time Protocol (PTP) to Intel(R) Infrastructure Data Path Function (IDPF) driver. PTP feature is supported when the PTP capability is negotiated with the Control Plane (CP). IDPF creates a PTP clock and sets a set of supported functions. During the PTP initialization, IDPF requests a set of PTP capabilities and receives a writeback from the CP with the set of supported options. These options are: - get time of the PTP clock - get cross timestamp - set the time of the PTP clock - adjust the PTP clock - Tx timestamping Each feature is considered to have direct access, where the operations on PCIe BAR registers are allowed, or the mailbox access, where the virtchnl messages are used to perform any PTP action. Mailbox access means that PTP requests are sent to the CP through dedicated secondary mailbox and the CP reads/writes/modifies desired resource - PTP Clock or Tx timestamp registers. Tx timestamp capabilities are negotiated only for vports that have UPLINK_VPORT flag set by the CP. Capabilities provide information about the number of available Tx timestamp latches, their indexes and size of the Tx timestamp value. IDPF requests Tx timestamp by setting the TSYN bit and the requested timestamp index in the context descriptor for the PTP packets. When the completion tag for that packet is received, IDPF schedules a worker to read the Tx timestamp value. Current implementation of the IDPF driver does not allow to get stable Tx timestamping, when more than 1 request per 1 second is sent to the driver. Debug is in progress, however PTP feature seems to be affected by the IDPF transmit flow, as the Tx timestamping relies on the completion tag. Milena Olech (10): idpf: initial PTP support virtchnl: add PTP virtchnl definitions idpf: move virtchnl structures to the header file idpf: negotiate PTP capabilies and get PTP clock idpf: add mailbox access to read PTP clock time idpf: add PTP clock configuration idpf: add Tx timestamp capabilities negotiation idpf: add Tx timestamp flows idpf: add support for Rx timestamping idpf: change the method for mailbox workqueue allocation drivers/net/ethernet/intel/idpf/Kconfig | 1 + drivers/net/ethernet/intel/idpf/Makefile | 3 + drivers/net/ethernet/intel/idpf/idpf.h | 18 + .../ethernet/intel/idpf/idpf_controlq_api.h | 3 + drivers/net/ethernet/intel/idpf/idpf_dev.c | 14 + .../net/ethernet/intel/idpf/idpf_ethtool.c | 63 ++ .../ethernet/intel/idpf/idpf_lan_pf_regs.h | 4 + .../net/ethernet/intel/idpf/idpf_lan_txrx.h | 13 +- drivers/net/ethernet/intel/idpf/idpf_lib.c | 40 + drivers/net/ethernet/intel/idpf/idpf_main.c | 8 +- drivers/net/ethernet/intel/idpf/idpf_ptp.c | 1006 +++++++++++++++++ drivers/net/ethernet/intel/idpf/idpf_ptp.h | 352 ++++++ drivers/net/ethernet/intel/idpf/idpf_txrx.c | 166 ++- drivers/net/ethernet/intel/idpf/idpf_txrx.h | 17 +- .../net/ethernet/intel/idpf/idpf_virtchnl.c | 160 ++- .../net/ethernet/intel/idpf/idpf_virtchnl.h | 84 ++ .../ethernet/intel/idpf/idpf_virtchnl_ptp.c | 674 +++++++++++ drivers/net/ethernet/intel/idpf/virtchnl2.h | 312 ++++- 18 files changed, 2839 insertions(+), 99 deletions(-) create mode 100644 drivers/net/ethernet/intel/idpf/idpf_ptp.c create mode 100644 drivers/net/ethernet/intel/idpf/idpf_ptp.h create mode 100644 drivers/net/ethernet/intel/idpf/idpf_virtchnl_ptp.c base-commit: 6d0dbb3dae5273e8efd6fd25deb00404ff5a8f38