| Message ID | 20200313224914.5997-1-grygorii.strashko@ti.com |
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Return-Path: <SRS0=EYtZ=46=vger.kernel.org=netdev-owner@kernel.org> 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=-8.9 required=3.0 tests=DKIMWL_WL_HIGH, DKIM_SIGNED, DKIM_VALID, DKIM_VALID_AU, HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI, MENTIONS_GIT_HOSTING,SPF_HELO_NONE,SPF_PASS,USER_AGENT_GIT autolearn=unavailable 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 DB0A4C5ACBF for <netdev@archiver.kernel.org>; Fri, 13 Mar 2020 22:49:33 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 9A87D2074D for <netdev@archiver.kernel.org>; Fri, 13 Mar 2020 22:49:33 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=ti.com header.i=@ti.com header.b="paIeQVVX" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727455AbgCMWtb (ORCPT <rfc822;netdev@archiver.kernel.org>); Fri, 13 Mar 2020 18:49:31 -0400 Received: from lelv0143.ext.ti.com ([198.47.23.248]:35520 "EHLO lelv0143.ext.ti.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726591AbgCMWtb (ORCPT <rfc822;netdev@vger.kernel.org>); Fri, 13 Mar 2020 18:49:31 -0400 Received: from fllv0034.itg.ti.com ([10.64.40.246]) by lelv0143.ext.ti.com (8.15.2/8.15.2) with ESMTP id 02DMnNI6065991; Fri, 13 Mar 2020 17:49:23 -0500 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=ti.com; s=ti-com-17Q1; t=1584139763; bh=EDAcxx9hPCEaIVnbAlrIt8w8VCoEDec78aIzj6j3P88=; h=From:To:CC:Subject:Date; b=paIeQVVXlPKNtZhMLBqoOA9zuuvxYb4tyyXMw3lkOCi3syaxOSULT2+afTIhl55vX V6INxKuLXL+ifMkfbDvkHnR9ESH5L2b5FiYg+WX+qVC9m7yW5Up3PBNpSSlfbrA+A9 wlK+kVxtQSnlN8pJSYaoWXd//GQxD2Fgwk1yGrLE= Received: from DFLE113.ent.ti.com (dfle113.ent.ti.com [10.64.6.34]) by fllv0034.itg.ti.com (8.15.2/8.15.2) with ESMTPS id 02DMnNaD127481 (version=TLSv1.2 cipher=AES256-GCM-SHA384 bits=256 verify=FAIL); Fri, 13 Mar 2020 17:49:23 -0500 Received: from DFLE114.ent.ti.com (10.64.6.35) by DFLE113.ent.ti.com (10.64.6.34) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256_P256) id 15.1.1847.3; Fri, 13 Mar 2020 17:49:23 -0500 Received: from fllv0040.itg.ti.com (10.64.41.20) by DFLE114.ent.ti.com (10.64.6.35) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256_P256) id 15.1.1847.3 via Frontend Transport; Fri, 13 Mar 2020 17:49:23 -0500 Received: from localhost (ileax41-snat.itg.ti.com [10.172.224.153]) by fllv0040.itg.ti.com (8.15.2/8.15.2) with ESMTP id 02DMnM9t008389; Fri, 13 Mar 2020 17:49:22 -0500 From: Grygorii Strashko <grygorii.strashko@ti.com> To: "David S . Miller" <davem@davemloft.net>, Richard Cochran <richardcochran@gmail.com>, Lokesh Vutla <lokeshvutla@ti.com>, Tony Lindgren <tony@atomide.com> CC: Sekhar Nori <nsekhar@ti.com>, Murali Karicheri <m-karicheri2@ti.com>, netdev <netdev@vger.kernel.org>, <linux-omap@vger.kernel.org>, <linux-kernel@vger.kernel.org>, Grygorii Strashko <grygorii.strashko@ti.com> Subject: [PATCH net-next 00/11] net: ethernet: ti: cpts: add irq and HW_TS_PUSH events Date: Sat, 14 Mar 2020 00:49:03 +0200 Message-ID: <20200313224914.5997-1-grygorii.strashko@ti.com> X-Mailer: git-send-email 2.17.1 MIME-Version: 1.0 Content-Type: text/plain X-EXCLAIMER-MD-CONFIG: e1e8a2fd-e40a-4ac6-ac9b-f7e9cc9ee180 Sender: netdev-owner@vger.kernel.org Precedence: bulk List-ID: <netdev.vger.kernel.org> X-Mailing-List: netdev@vger.kernel.org |
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net: ethernet: ti: cpts: add irq and HW_TS_PUSH events
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Hi Richard, All, This is re-spin of patches to add CPSW IRQ and HW_TS_PUSH events support I've sent long time ago [1]. In this series, I've tried to restructure and split changes, and also add few additional optimizations comparing to initial RFC submission [1]. The HW_TS_PUSH events intended to serve for different timesync purposes on of which is to add PPS generation function, which can be implemented as below: +-----------------+ | Control | | application | +------->+ +----------+ | | | | | | | | | +-----------------+ | | | | | | PTP_EXTTS_REQUEST | | | | | +----------------------------------------------------------------+ | | Kernel +-------+----------+ +-------v--------+ | \dev\ptpX | | /sys/class/pwm/| | | | | +-------^----------+ +-------+--------+ | | | | | +-------v-------------------+ +-------+----------+ | | | CPTS driver | |pwm/pwm-omap-dmtimer.c | | | +---------------------------+ +-------^----------+ |clocksource/timer_ti_dm.c | | +-------+-------------------+ |HWx_TS_PUSH evt | +----------------------------------------------------------------+ | | HW +-------+----------+ +-------v--------+ | CPTS | | DMTimer | | | | | | HWx_TS_PUSH X<-----------------+ | | + | | +------------------+ +-------+--------+ | X timer4 As per my knowledge there is at least one public implemented above PPS generation schema from Tusori Tibor [2] based on initial HW_TS_PUSH enable submission[1]. And now there is work done by Lokesh Vutla <lokeshvutla@ti.com> published to enable PWM enable/improve PWM adjustment from user space [3][4][5]. Main changes comparing to initial submission: - both RX/TX timestamp processing deferred to ptp worker - both CPTS IRQ and polling events processing supported to make it work for Keystone 2 also - switch to use new .gettimex64() interface - no DT updates as number of HWx_TS_PUSH inputs is static per HW Dependency: ff7cf1822b93 kthread: mark timer used by delayed kthread works as IRQ safe which was merged in -next, but has to be back-ported for testing with earlier versions Testing on am571x-idk/omap2plus_defconfig/+CONFIG_PREEMPT=y: 1) testing HW_TS_PUSH - enable pwm in DT pwm16: dmtimer-pwm { compatible = "ti,omap-dmtimer-pwm"; ti,timers = <&timer16>; #pwm-cells = <3>; }; - configure and start pwm echo 0 > /sys/class/pwm/pwmchip0/export echo 1000000000 > /sys/class/pwm/pwmchip0/pwm0/period echo 500000000 > /sys/class/pwm/pwmchip0/pwm0/duty_cycle echo 1 > /sys/class/pwm/pwmchip0/pwm0/enable - test HWx_TS_PUSH using Kernel selftest testptp application ./tools/testing/selftests/ptp/testptp -d /dev/ptp0 -e 1000 -i 3 2) testing phc2sys # ./linuxptp/phc2sys -s CLOCK_REALTIME -c eth0 -m -O 0 -u30 phc2sys[1616.791]: eth0 rms 408190379792180864 max 1580914543017209856 freq +864 +/- 4635 delay 645 +/- 29 phc2sys[1646.795]: eth0 rms 41 max 108 freq +0 +/- 36 delay 656 +/- 29 phc2sys[1676.800]: eth0 rms 43 max 83 freq +2 +/- 38 delay 650 +/- 0 phc2sys[1706.804]: eth0 rms 39 max 87 freq +4 +/- 34 delay 672 +/- 55 phc2sys[1736.808]: eth0 rms 35 max 66 freq +1 +/- 30 delay 667 +/- 49 phc2sys[1766.813]: eth0 rms 38 max 79 freq +2 +/- 33 delay 656 +/- 29 phc2sys[1796.817]: eth0 rms 45 max 98 freq +1 +/- 39 delay 656 +/- 29 phc2sys[1826.821]: eth0 rms 40 max 87 freq +5 +/- 35 delay 650 +/- 0 phc2sys[1856.826]: eth0 rms 29 max 76 freq -0 +/- 25 delay 656 +/- 29 phc2sys[1886.830]: eth0 rms 40 max 97 freq +4 +/- 35 delay 667 +/- 49 phc2sys[1916.834]: eth0 rms 42 max 94 freq +2 +/- 36 delay 661 +/- 41 phc2sys[1946.839]: eth0 rms 40 max 91 freq +2 +/- 35 delay 661 +/- 41 phc2sys[1976.843]: eth0 rms 46 max 88 freq -0 +/- 40 delay 667 +/- 49 phc2sys[2006.847]: eth0 rms 49 max 97 freq +2 +/- 43 delay 650 +/- 0 3) testing ptp4l - 1G connection # ./linuxptp/ptp4l -P -2 -H -i eth0 -l 6 -m -q -p /dev/ptp0 -f ptp.cfg -s ptp4l[862.891]: port 1: UNCALIBRATED to SLAVE on MASTER_CLOCK_SELECTED ptp4l[923.894]: rms 1019697354682 max 5768279314068 freq +26053 +/- 72 delay 488 +/- 1 ptp4l[987.896]: rms 13 max 26 freq +26005 +/- 29 delay 488 +/- 1 ptp4l[1051.899]: rms 14 max 50 freq +25895 +/- 21 delay 488 +/- 1 ptp4l[1115.901]: rms 11 max 27 freq +25878 +/- 17 delay 488 +/- 1 ptp4l[1179.904]: rms 10 max 27 freq +25857 +/- 12 delay 488 +/- 1 ptp4l[1243.906]: rms 14 max 37 freq +25851 +/- 15 delay 488 +/- 1 ptp4l[1307.909]: rms 12 max 33 freq +25835 +/- 15 delay 488 +/- 1 ptp4l[1371.911]: rms 11 max 27 freq +25832 +/- 14 delay 488 +/- 1 ptp4l[1435.914]: rms 11 max 26 freq +25823 +/- 11 delay 488 +/- 1 ptp4l[1499.916]: rms 10 max 29 freq +25829 +/- 11 delay 489 +/- 1 ptp4l[1563.919]: rms 11 max 27 freq +25827 +/- 12 delay 488 +/- 1 - 10M connection # ./linuxptp/ptp4l -P -2 -H -i eth0 -l 6 -m -q -p /dev/ptp0 -f ptp.cfg -s ptp4l[51.955]: port 1: UNCALIBRATED to SLAVE on MASTER_CLOCK_SELECTED ptp4l[112.957]: rms 279468848453933920 max 1580914542977391360 freq +25390 +/- 3207 delay 8222 +/- 36 ptp4l[176.960]: rms 254 max 522 freq +25809 +/- 219 delay 8271 +/- 30 ptp4l[240.962]: rms 271 max 684 freq +25868 +/- 234 delay 8249 +/- 22 ptp4l[304.965]: rms 263 max 556 freq +25894 +/- 227 delay 8225 +/- 47 ptp4l[368.967]: rms 238 max 648 freq +25908 +/- 204 delay 8234 +/- 40 ptp4l[432.970]: rms 274 max 658 freq +25932 +/- 237 delay 8241 +/- 22 ptp4l[496.972]: rms 247 max 557 freq +25943 +/- 213 delay 8223 +/- 26 ptp4l[560.974]: rms 291 max 756 freq +25968 +/- 251 delay 8244 +/- 41 ptp4l[624.977]: rms 249 max 697 freq +25975 +/- 216 delay 8258 +/- 22 [1] https://lore.kernel.org/patchwork/cover/799251/ [2] https://usermanual.wiki/Document/SetupGuide.632280828.pdf https://github.com/t-tibor/msc_thesis [3] https://patchwork.kernel.org/cover/11421329/ [4] https://patchwork.kernel.org/cover/11433197/ [5] https://sourceforge.net/p/linuxptp/mailman/message/36943248/ Grygorii Strashko (11): net: ethernet: ti: cpts: use dev_yy() api for logs net: ethernet: ti: cpts: separate hw counter read from timecounter net: ethernet: ti: cpts: move tc mult update in cpts_fifo_read() net: ethernet: ti: cpts: switch to use new .gettimex64() interface net: ethernet: ti: cpts: optimize packet to event matching net: ethernet: ti: cpts: move tx timestamp processing to ptp worker only net: ethernet: ti: cpts: rework locking net: ethernet: ti: cpts: move rx timestamp processing to ptp worker only net: ethernet: ti: cpts: add irq support net: ethernet: ti: cpts: add support for HW_TS_PUSH events net: ethernet: ti: cpsw: enable cpts irq drivers/net/ethernet/ti/cpsw.c | 35 +- drivers/net/ethernet/ti/cpsw_new.c | 33 +- drivers/net/ethernet/ti/cpsw_priv.c | 17 +- drivers/net/ethernet/ti/cpsw_priv.h | 2 + drivers/net/ethernet/ti/cpts.c | 508 +++++++++++++++++--------- drivers/net/ethernet/ti/cpts.h | 27 +- drivers/net/ethernet/ti/netcp_ethss.c | 3 +- 7 files changed, 442 insertions(+), 183 deletions(-)