From patchwork Wed Dec 2 04:53:24 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Vinicius Costa Gomes X-Patchwork-Id: 336593 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_PASS, URIBL_BLOCKED, 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 CAF10C64E90 for ; Wed, 2 Dec 2020 04:55:03 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 748462222C for ; Wed, 2 Dec 2020 04:55:03 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728446AbgLBEzC (ORCPT ); Tue, 1 Dec 2020 23:55:02 -0500 Received: from mga04.intel.com ([192.55.52.120]:43301 "EHLO mga04.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726151AbgLBEzC (ORCPT ); Tue, 1 Dec 2020 23:55:02 -0500 IronPort-SDR: PS7X+Ea7RmHujVqB3+ZWpjBD56aTflVLRBOGgWf9nIizJKrS/Gopk+d8kAaYLmeCJayLAJD4vS lV+H0LrfE9UQ== X-IronPort-AV: E=McAfee;i="6000,8403,9822"; a="170387540" X-IronPort-AV: E=Sophos;i="5.78,385,1599548400"; d="scan'208";a="170387540" X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False Received: from orsmga005.jf.intel.com ([10.7.209.41]) by fmsmga104.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 01 Dec 2020 20:53:50 -0800 IronPort-SDR: YVrnecCPQENo2hfl06eRNaVcm0cgimH/R70lhkacYkV1i8YMh8Z5KMnBXOdi9Fg6fKcm99LL0a hDVj5FO5XIFg== X-IronPort-AV: E=Sophos;i="5.78,385,1599548400"; d="scan'208";a="549888388" Received: from shivanif-mobl.amr.corp.intel.com (HELO localhost.localdomain) ([10.212.152.222]) by orsmga005-auth.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 01 Dec 2020 20:53:50 -0800 From: Vinicius Costa Gomes To: netdev@vger.kernel.org Cc: Vinicius Costa Gomes , jhs@mojatatu.com, xiyou.wangcong@gmail.com, jiri@resnulli.us, kuba@kernel.org, m-karicheri2@ti.com, vladimir.oltean@nxp.com, Jose.Abreu@synopsys.com, po.liu@nxp.com, intel-wired-lan@lists.osuosl.org, anthony.l.nguyen@intel.com Subject: [PATCH net-next v1 8/9] igc: Add support for exposing frame preemption stats registers Date: Tue, 1 Dec 2020 20:53:24 -0800 Message-Id: <20201202045325.3254757-9-vinicius.gomes@intel.com> X-Mailer: git-send-email 2.29.2 In-Reply-To: <20201202045325.3254757-1-vinicius.gomes@intel.com> References: <20201202045325.3254757-1-vinicius.gomes@intel.com> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org Expose the Frame Preemption counters, so the number of express/preemptible packets can be monitored by userspace. These registers are cleared when read, so the value shown is the number of events that happened since the last read. Signed-off-by: Vinicius Costa Gomes --- drivers/net/ethernet/intel/igc/igc_ethtool.c | 8 ++++++++ drivers/net/ethernet/intel/igc/igc_regs.h | 10 ++++++++++ 2 files changed, 18 insertions(+) diff --git a/drivers/net/ethernet/intel/igc/igc_ethtool.c b/drivers/net/ethernet/intel/igc/igc_ethtool.c index 492c6592c150..14a14a61de45 100644 --- a/drivers/net/ethernet/intel/igc/igc_ethtool.c +++ b/drivers/net/ethernet/intel/igc/igc_ethtool.c @@ -325,6 +325,14 @@ static void igc_ethtool_get_regs(struct net_device *netdev, regs_buff[213] = adapter->stats.tlpic; regs_buff[214] = adapter->stats.rlpic; + regs_buff[215] = rd32(IGC_PRMPTDTCNT); + regs_buff[216] = rd32(IGC_PRMEVNTTCNT); + regs_buff[217] = rd32(IGC_PRMPTDRCNT); + regs_buff[218] = rd32(IGC_PRMEVNTRCNT); + regs_buff[219] = rd32(IGC_PRMPBLTCNT); + regs_buff[220] = rd32(IGC_PRMPBLRCNT); + regs_buff[221] = rd32(IGC_PRMEXPTCNT); + regs_buff[222] = rd32(IGC_PRMEXPRCNT); } static void igc_ethtool_get_wol(struct net_device *netdev, diff --git a/drivers/net/ethernet/intel/igc/igc_regs.h b/drivers/net/ethernet/intel/igc/igc_regs.h index b52dd9d737e8..69e295d69d84 100644 --- a/drivers/net/ethernet/intel/igc/igc_regs.h +++ b/drivers/net/ethernet/intel/igc/igc_regs.h @@ -197,6 +197,16 @@ #define IGC_FTQF(_n) (0x059E0 + (4 * (_n))) /* 5-tuple Queue Fltr */ +/* Time sync registers - preemption statistics */ +#define IGC_PRMPTDTCNT 0x04280 /* Good TX Preempted Packets */ +#define IGC_PRMEVNTTCNT 0x04298 /* TX Preemption event counter */ +#define IGC_PRMPTDRCNT 0x04284 /* Good RX Preempted Packets */ +#define IGC_PRMEVNTRCNT 0x0429C /* RX Preemption event counter */ +#define IGC_PRMPBLTCNT 0x04288 /* Good TX Preemptable Packets */ +#define IGC_PRMPBLRCNT 0x0428C /* Good RX Preemptable Packets */ +#define IGC_PRMEXPTCNT 0x04290 /* Good TX Express Packets */ +#define IGC_PRMEXPRCNT 0x042A0 /* Preemption Exception Counter */ + /* Transmit Scheduling Registers */ #define IGC_TQAVCTRL 0x3570 #define IGC_TXQCTL(_n) (0x3344 + 0x4 * (_n))