From patchwork Thu Feb 2 08:15:59 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Clark Wang X-Patchwork-Id: 51783 Return-Path: Delivered-To: ouuuleilei@gmail.com Received: by 2002:adf:eb09:0:0:0:0:0 with SMTP id s9csp109196wrn; Thu, 2 Feb 2023 00:22:32 -0800 (PST) X-Google-Smtp-Source: AK7set8gQL5p176l5rFokpCvxGFJYdBpE7PJ8cNY5hBfhGJXxTQ6UuxbZf9p/3Y38HK6bNu5Unzm X-Received: by 2002:a17:90b:1e41:b0:229:4a88:47de with SMTP id pi1-20020a17090b1e4100b002294a8847demr5532128pjb.13.1675326152678; Thu, 02 Feb 2023 00:22:32 -0800 (PST) ARC-Seal: i=2; a=rsa-sha256; t=1675326152; cv=pass; d=google.com; s=arc-20160816; b=o4JAguQxqd+wZEHG8lUFLrMx0jTSVIlqxfnAFyroeCOdsO0rpSfhDRrHFPvtjsFdL+ dWOlWr6RJJihzqOsjsjD8YjwDTo8aJml8odo5TOhvBk4ZVYjN4tocuYxkBYNHUjc+5Ht ftvZX7qo/ZeoiVZa/i5pt10jEreFA984jfr5T2H7jfBzPNYJaghnsCyhBh05cu/OiefL 1o/qkxnsnt15rRC6M6RjMhr0fSiryPz1YqYLh8yJP/0oQt/gvrIfXnvcfz9P2oa9cmWm X+5xJVcbpavPATOPcdwz7jbA2mZ/HBNUu9VYhZHO1yEYx5eJ6te5RgiIsPvGKyAU0Pqt pW5Q== ARC-Message-Signature: i=2; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=list-id:precedence:mime-version:content-transfer-encoding :message-id:date:subject:cc:to:from:dkim-signature; bh=nywlvBN/FbAwNmekc7G9y0+h2Jo2nRoaVJGeOUlwXmA=; b=n/hm3larnTLsxQjVG+8NGqwYbiVzM1Th+2K2vfmgo/WRDQ90Y8hU50u0s8nG0PgDqW JbH2qYfprKEXOHYTBgpjkg5iUSolebYiBGhuPg1noJGBdDzwlwIuA4EmWDLz+EqBDSLR IiDVfhDANW5Q6gYo0gEDYYLQoWahD3LISGK5neRHyoMKU8FknErFqNGn0d1YKjwV7G9v 5d+m5dE7wo1HxOQzyJ5a0Anum0GXd3hSmJhogLwSN/XBH9j4q7eydYFOnYVIBlcP0c11 GPPN0kCfwVg6XDAKj7CvVj5+oeZSTXl3RH2R9+uUFaASAKNh97IJX3pOrR6QqdwVFmIk Qglg== ARC-Authentication-Results: i=2; mx.google.com; dkim=pass header.i=@nxp.com header.s=selector2 header.b=g9hA9QzJ; arc=pass (i=1 spf=pass spfdomain=nxp.com dkim=pass dkdomain=nxp.com dmarc=pass fromdomain=nxp.com); spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=pass (p=NONE sp=NONE dis=NONE) header.from=nxp.com Received: from out1.vger.email (out1.vger.email. [2620:137:e000::1:20]) by mx.google.com with ESMTP id j14-20020a637a4e000000b004e9311fc092si2431975pgn.568.2023.02.02.00.22.20; Thu, 02 Feb 2023 00:22:32 -0800 (PST) Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) client-ip=2620:137:e000::1:20; Authentication-Results: mx.google.com; dkim=pass header.i=@nxp.com header.s=selector2 header.b=g9hA9QzJ; arc=pass (i=1 spf=pass spfdomain=nxp.com dkim=pass dkdomain=nxp.com dmarc=pass fromdomain=nxp.com); spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=pass (p=NONE sp=NONE dis=NONE) header.from=nxp.com Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231964AbjBBIRN (ORCPT + 99 others); Thu, 2 Feb 2023 03:17:13 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:34690 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229479AbjBBIRH (ORCPT ); Thu, 2 Feb 2023 03:17:07 -0500 Received: from EUR03-AM7-obe.outbound.protection.outlook.com (mail-am7eur03on2060.outbound.protection.outlook.com [40.107.105.60]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 67F788241A; Thu, 2 Feb 2023 00:17:06 -0800 (PST) ARC-Seal: i=1; a=rsa-sha256; s=arcselector9901; d=microsoft.com; cv=none; b=QRhZ8deG6NJbQkncs78RmWbrZXaB8YhRFh4s67DBM6pwCMWemebXRjQiAEqPwbNTuLytyEGTn/GcNGlIbd/gEMThrYFMSE/YqPsZ5EolOs62ENxW5u+eEwAbfZbWXzMtYZ4SQ4XE+UE/4Sb1ViHnLMTgaSs6fCw1t5V2k7H6DVBk44GdQsaRc/H7H0N4ksifsdg/7jxyvJ0ry52PixXkC9+RADQbWulU0wHrJd91InICkqKqPanyD4UwwVmQ62A3L23GcH+5RF9io3gHNgVHaS7MKcpbJRRaGJa8mAGDjQFi+59TutI3FR06e4XGwyrnPU/5R698J82HoDM7WUlr+g== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=microsoft.com; s=arcselector9901; h=From:Date:Subject:Message-ID:Content-Type:MIME-Version:X-MS-Exchange-AntiSpam-MessageData-ChunkCount:X-MS-Exchange-AntiSpam-MessageData-0:X-MS-Exchange-AntiSpam-MessageData-1; bh=nywlvBN/FbAwNmekc7G9y0+h2Jo2nRoaVJGeOUlwXmA=; b=QgRC95tlowVMN4VcrkfE0/8YYmVy8ic90CfOo0LC9eDAZ3hkJgjIDvRMwUV55g9mwhxpuwS8GUXs1pu6Zk65omsME7p4StrO9IGFZEBYDFK/lvBLwvDIm1gzCtRGYvCSI/8GIxbxdJ00DwwS6w/cLOfr4EdzL21nijYAa5XAr008SMfqm9LasQpvdTbFGh0mFc8CA4j32PhrNjfWwo806G+lWjrIXkGZKeqRYyqs+JDEepZIJ8hNSB+aLFatyhtTq52FFRYAXdDtTVF8p/ZcaYor0y1kfeggcw7xC0LM/lsT7RS2+Exh/qYPOaW4kK8YUvQnapFw1cNiWo3oqOvFPA== ARC-Authentication-Results: i=1; mx.microsoft.com 1; spf=pass smtp.mailfrom=nxp.com; dmarc=pass action=none header.from=nxp.com; dkim=pass header.d=nxp.com; arc=none DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=nxp.com; s=selector2; h=From:Date:Subject:Message-ID:Content-Type:MIME-Version:X-MS-Exchange-SenderADCheck; bh=nywlvBN/FbAwNmekc7G9y0+h2Jo2nRoaVJGeOUlwXmA=; b=g9hA9QzJadigpPkhpGkxrBaVkyE4fAx2KPModHrzh0iPa1MMGWH1vGoFa5eU7qtzOV22+mTI506pWhiMiR4Wd+TrqC0OyBl4nLOwSaMVje+3TV3HHy6c0cNfILoxObSTO3TtdGxPZUQhmrtBCZNbPd1WAj3HWmgipv4yPYe7So8= Authentication-Results: dkim=none (message not signed) header.d=none;dmarc=none action=none header.from=nxp.com; Received: from HE1PR0402MB2939.eurprd04.prod.outlook.com (2603:10a6:3:db::18) by VI1PR04MB6912.eurprd04.prod.outlook.com (2603:10a6:803:134::12) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.6064.22; Thu, 2 Feb 2023 08:17:03 +0000 Received: from HE1PR0402MB2939.eurprd04.prod.outlook.com ([fe80::4980:91ae:a2a8:14e1]) by HE1PR0402MB2939.eurprd04.prod.outlook.com ([fe80::4980:91ae:a2a8:14e1%4]) with mapi id 15.20.6064.027; Thu, 2 Feb 2023 08:17:03 +0000 From: Clark Wang To: peppe.cavallaro@st.com, alexandre.torgue@foss.st.com, joabreu@synopsys.com, davem@davemloft.net, edumazet@google.com, kuba@kernel.org, pabeni@redhat.com, mcoquelin.stm32@gmail.com, linux@armlinux.org.uk, andrew@lunn.ch, hkallweit1@gmail.com Cc: netdev@vger.kernel.org, linux-stm32@st-md-mailman.stormreply.com, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, linux-imx@nxp.com Subject: [PATCH V3 1/2] net: phylink: add a function to resume phy alone to fix resume issue with WoL enabled Date: Thu, 2 Feb 2023 16:15:59 +0800 Message-Id: <20230202081559.3553637-1-xiaoning.wang@nxp.com> X-Mailer: git-send-email 2.34.1 X-ClientProxiedBy: SGXP274CA0024.SGPP274.PROD.OUTLOOK.COM (2603:1096:4:b8::36) To HE1PR0402MB2939.eurprd04.prod.outlook.com (2603:10a6:3:db::18) MIME-Version: 1.0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: HE1PR0402MB2939:EE_|VI1PR04MB6912:EE_ X-MS-Office365-Filtering-Correlation-Id: 44ec787d-5d72-4f25-84bf-08db04f5dd25 X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0; X-Microsoft-Antispam-Message-Info: 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 X-Forefront-Antispam-Report: CIP:255.255.255.255;CTRY:;LANG:en;SCL:1;SRV:;IPV:NLI;SFV:NSPM;H:HE1PR0402MB2939.eurprd04.prod.outlook.com;PTR:;CAT:NONE;SFS:(13230025)(4636009)(136003)(346002)(366004)(39860400002)(376002)(396003)(451199018)(36756003)(86362001)(921005)(1076003)(38100700002)(38350700002)(66556008)(66946007)(66476007)(41300700001)(4326008)(8676002)(8936002)(316002)(7416002)(26005)(5660300002)(6666004)(83380400001)(2616005)(2906002)(478600001)(6506007)(6486002)(52116002)(186003)(6512007);DIR:OUT;SFP:1101; X-MS-Exchange-AntiSpam-MessageData-ChunkCount: 1 X-MS-Exchange-AntiSpam-MessageData-0: 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 X-OriginatorOrg: nxp.com X-MS-Exchange-CrossTenant-Network-Message-Id: 44ec787d-5d72-4f25-84bf-08db04f5dd25 X-MS-Exchange-CrossTenant-AuthSource: HE1PR0402MB2939.eurprd04.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Internal X-MS-Exchange-CrossTenant-OriginalArrivalTime: 02 Feb 2023 08:17:02.9279 (UTC) X-MS-Exchange-CrossTenant-FromEntityHeader: Hosted X-MS-Exchange-CrossTenant-Id: 686ea1d3-bc2b-4c6f-a92c-d99c5c301635 X-MS-Exchange-CrossTenant-MailboxType: HOSTED X-MS-Exchange-CrossTenant-UserPrincipalName: MAO4Ie4UNuXNzcpHBhoWvq89O16atess6pvf4hB644OlP5n6WwvBaCbxhAhW/mklnhARYzY+xA+5nkZpCytvJQ== X-MS-Exchange-Transport-CrossTenantHeadersStamped: VI1PR04MB6912 X-Spam-Status: No, score=-2.1 required=5.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,DKIM_VALID_EF,RCVD_IN_DNSWL_NONE, RCVD_IN_MSPIKE_H2,SPF_HELO_PASS,SPF_PASS autolearn=ham autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on lindbergh.monkeyblade.net Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org X-getmail-retrieved-from-mailbox: =?utf-8?q?INBOX?= X-GMAIL-THRID: =?utf-8?q?1756706795527607581?= X-GMAIL-MSGID: =?utf-8?q?1756706795527607581?= Issue we met: On some platforms, mac cannot work after resumed from the suspend with WoL enabled. The cause of the issue: 1. phylink_resolve() is in a workqueue which will not be executed immediately. This is the call sequence: phylink_resolve()->phylink_link_up()->pl->mac_ops->mac_link_up() For stmmac driver, mac_link_up() will set the correct speed/duplex... values which are from link_state. 2. In stmmac_resume(), it will call stmmac_hw_setup() after called the phylink_resume(), because mac need phy rx_clk to do the reset. stmmac_core_init() is called in function stmmac_hw_setup(), which will reset the mac and set the speed/duplex... to default value. Conclusion: Because phylink_resolve() cannot determine when it is called, it cannot be guaranteed to be called after stmmac_core_init(). Once stmmac_core_init() is called after phylink_resolve(), the mac will be misconfigured and cannot be used. In order to avoid this problem, add a function called phylink_phy_resume() to resume phy separately. This eliminates the need to call phylink_resume() before stmmac_hw_setup(). Add another judgement before called phy_start() in phylink_start(). This way phy_start() will not be called multiple times when resumes. At the same time, it may not affect other drivers that do not use phylink_phy_resume(). Signed-off-by: Clark Wang --- V2 change: - add mac_resume_phy_separately flag to struct phylink to mark if the mac driver uses the phylink_phy_resume() first. V3 change: - add brace to avoid ambiguous 'else' Reported-by: kernel test robot --- drivers/net/phy/phylink.c | 32 ++++++++++++++++++++++++++++++-- include/linux/phylink.h | 1 + 2 files changed, 31 insertions(+), 2 deletions(-) diff --git a/drivers/net/phy/phylink.c b/drivers/net/phy/phylink.c index 319790221d7f..c2fe66f0b78f 100644 --- a/drivers/net/phy/phylink.c +++ b/drivers/net/phy/phylink.c @@ -80,6 +80,8 @@ struct phylink { DECLARE_PHY_INTERFACE_MASK(sfp_interfaces); __ETHTOOL_DECLARE_LINK_MODE_MASK(sfp_support); u8 sfp_port; + + bool mac_resume_phy_separately; }; #define phylink_printk(level, pl, fmt, ...) \ @@ -1509,6 +1511,7 @@ struct phylink *phylink_create(struct phylink_config *config, return ERR_PTR(-EINVAL); } + pl->mac_resume_phy_separately = false; pl->using_mac_select_pcs = using_mac_select_pcs; pl->phy_state.interface = iface; pl->link_interface = iface; @@ -1943,8 +1946,12 @@ void phylink_start(struct phylink *pl) } if (poll) mod_timer(&pl->link_poll, jiffies + HZ); - if (pl->phydev) - phy_start(pl->phydev); + if (pl->phydev) { + if (!pl->mac_resume_phy_separately) + phy_start(pl->phydev); + else + pl->mac_resume_phy_separately = false; + } if (pl->sfp_bus) sfp_upstream_start(pl->sfp_bus); } @@ -2024,6 +2031,27 @@ void phylink_suspend(struct phylink *pl, bool mac_wol) } EXPORT_SYMBOL_GPL(phylink_suspend); +/** + * phylink_phy_resume() - resume phy alone + * @pl: a pointer to a &struct phylink returned from phylink_create() + * + * In the MAC driver using phylink, if the MAC needs the clock of the phy + * when it resumes, can call this function to resume the phy separately. + * Then proceed to MAC resume operations. + */ +void phylink_phy_resume(struct phylink *pl) +{ + ASSERT_RTNL(); + + if (!test_bit(PHYLINK_DISABLE_MAC_WOL, &pl->phylink_disable_state) + && pl->phydev) { + phy_start(pl->phydev); + pl->mac_resume_phy_separately = true; + } + +} +EXPORT_SYMBOL_GPL(phylink_phy_resume); + /** * phylink_resume() - handle a network device resume event * @pl: a pointer to a &struct phylink returned from phylink_create() diff --git a/include/linux/phylink.h b/include/linux/phylink.h index c492c26202b5..6edfab5f754c 100644 --- a/include/linux/phylink.h +++ b/include/linux/phylink.h @@ -589,6 +589,7 @@ void phylink_stop(struct phylink *); void phylink_suspend(struct phylink *pl, bool mac_wol); void phylink_resume(struct phylink *pl); +void phylink_phy_resume(struct phylink *pl); void phylink_ethtool_get_wol(struct phylink *, struct ethtool_wolinfo *); int phylink_ethtool_set_wol(struct phylink *, struct ethtool_wolinfo *);