From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 6C08AC5CFC1 for ; Tue, 11 Aug 2026 09:29:40 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender:List-Subscribe:List-Help :List-Post:List-Archive:List-Unsubscribe:List-Id:Content-Transfer-Encoding: MIME-Version:References:In-Reply-To:Message-ID:Date:Subject:To:From:Reply-To: Cc:Content-Type:Content-ID:Content-Description:Resent-Date:Resent-From: Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Owner; bh=5mpB2vpD+uaY+L+h47uF+iOxZ8EZmM0AVQF+rKLz4B8=; b=xF+ahfDlUBt2QWCWntSsT7jUFY VQ3wMUzTX5arFjowZ7tW89UpkfxKi4VO+WIAK95jsihLqMjDWnhnO2gitHHUmuneCWUxeLWGfbAq2 oi3b/JojrTT6136y2cjL7PKDRxkQU412OkOOPwaETeph6/4K93lklq+5gI9fOxibdkbGVL+T28Qm7 GugWo+vJPiC/yQiMebDv8db7VgJX3L7vko3ZxI7nWHavo5Dhw0xr7UPRckWDoc+pyJw+p+ItPgIFE pEVj78jJ6N/EcBySFQcgrOpxY8BQpGC3IynvTd9p/1Ga+2EuB/AsXZMKsi66zwt1mMLMGYa5d4N9L mjKbytNQ==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.99.1 #2 (Red Hat Linux)) id 1wtini-0000000DjiA-3z6b; Tue, 11 Aug 2026 09:29:38 +0000 Received: from desiato.infradead.org ([2001:8b0:10b:1:d65d:64ff:fe57:4e05]) by bombadil.infradead.org with esmtps (Exim 4.99.1 #2 (Red Hat Linux)) id 1wtinX-0000000DjRO-2dQl for linux-mediatek@bombadil.infradead.org; Tue, 11 Aug 2026 09:29:27 +0000 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=infradead.org; s=desiato.20200630; h=Content-Transfer-Encoding:MIME-Version :References:In-Reply-To:Message-ID:Date:Subject:To:From:Sender:Reply-To:Cc: Content-Type:Content-ID:Content-Description; bh=5mpB2vpD+uaY+L+h47uF+iOxZ8EZmM0AVQF+rKLz4B8=; b=lPXEzTfpoMluy1GfInPEJAq6q/ ZFmXK/Jip7ny7CHc7/6wnspcEP0WXMlEjQm6+Jtc/iZOuRSjmbZ/ue9UjiQY6033dbQiG4+jx0oAl SItdTxZ6qSq6yZaIBz5j3wxuYM/N5dB4TE8vfhT/U1r2CFZ9EjpJvBTeAGZjiGgHvsrCNNuii9ISJ gweDvaYOlJB/hw4ELToOg+WFZslN+X7KCNXz0ZXkxrlLJwzc+VYDRL4li9wPezJxxX9tI2E9+zpq4 6vsYshmH0RFquxBOANDlG15fmaS+j2er12UmTLyfaVgElagceqW2hEl/0Ig5UTWKHltW2K4SwZi2i UrWXYi1A==; Received: from mail-wm1-x32e.google.com ([2a00:1450:4864:20::32e]) by desiato.infradead.org with esmtps (Exim 4.99.2 #2 (Red Hat Linux)) id 1wtinT-0000000ESy2-0sik for linux-mediatek@lists.infradead.org; Tue, 11 Aug 2026 09:29:26 +0000 Received: by mail-wm1-x32e.google.com with SMTP id 5b1f17b1804b1-498028b3d5eso32249205e9.1 for ; Tue, 11 Aug 2026 02:29:22 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20251104; t=1786440562; x=1787045362; darn=lists.infradead.org; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:to:from:from:to:cc:subject:date:message-id :reply-to:content-type; bh=5mpB2vpD+uaY+L+h47uF+iOxZ8EZmM0AVQF+rKLz4B8=; b=ZM6sUjwj8CRWNftQH1fbBEnT7kRgvVkl9GEwHbVSX5OEE2pmoG8yAdsQDIE2H5+DF5 Bt2RxU23qFqySSMQ+W4bvzwvATsLl+gjbbY6J47pXKdmZ5Zu5olBNcZEbnG5EIEcYG70 r2jkJB6LqKXwGEp/9hVrjXHgIaPZ2Uo58PkfoJG7R9oj0LkEp2ePvIJOn4zrYTZCfqQO RTWyusZQELTUMzYlrg+XGtAf/WFSX8aV3p0n/CWD9IMs0D33OXU6TEFb8O2C23gK+V5s ylYId2hUw+OIyiaxkmYGXz7Q74bn5wPrZ3SX7UCCJ/+umSnjClBIY3rW+Edq+coYMUZf VceQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20251104; t=1786440562; x=1787045362; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:to:from:x-gm-gg:x-gm-message-state:from:to :cc:subject:date:message-id:reply-to:content-type; bh=5mpB2vpD+uaY+L+h47uF+iOxZ8EZmM0AVQF+rKLz4B8=; b=czAImIwy+grD2tQS99MNjZd9NeGtE8f/uPe8VX/eRKD9s95dvD11LWsC348UiXSS/8 VaXk8Pi3O7j1eJTMG1WZ5GLcFhxkMNBMRSQD6lHhoT41I7rZgFL+Dv2MO2+gts7JAIx8 qESJCgMkFsVToIPTH8xb+nbIz0D4Or1RZJ8fK8ZUDy4/SI7YoV/REr9U00TMc2gYZlip OzqtvOoaHNpNi/ILBotaaoBjVdHLKoqhORHv5uwLzNkIndHuhF6LMCarOpC6qxoizXbJ 9FRJpNkuQH1B8ps2i+nnTHbxufTZbfaV6HLwKl9HWcXdI3lun8cG+SDIhrpj5Ox2v/4+ vNWg== X-Forwarded-Encrypted: i=1; AHgh+RohRaFezdtzgZ8TCB9w62k84oVjuv6OJxYpm9Nul/4oJA/Dbb5a8FDCz3u0oXjHROkDAkY/ak+Fkl9p1ARzwA==@lists.infradead.org X-Gm-Message-State: AOJu0YxIAoo2ypdV2mKmZhZsIiXcY+b7Og2U6ig2dc4fCDel33/qVZcs VPfHUUEZAyYzXo8V3EZ9WVuWF3EMODyKr4Yj2KFLZEIJDU8UVahoFMYs X-Gm-Gg: AR+sD13HW/CK6DI/aanExnc7ZFiOyRaAGWnkpHlGRKXHmnrDAKKflucqjy8mTRig6z4 4fLAm+r9gun9BOg0+jWGTsad5mq5gM4aRGYTFbtEQHmFloA9DSTi5tGCgTxkRfVxjmjm4txqkZm FjutZQvNIvsRqs7oGl6n0Cg028VahLSrGrpTCU6tz+jx/NWKXLaCA/MnXrPAPYXHa5cpIxX3GXw s5OGJOKHLRrjFnSjuHJ7ii95hjwPMm+KAWa7Na+9IlbcOyiKdyfP3f54sAo+64le9a+F717aN9g +D6qREQ4mLtFIOqhcRmVNRF6aMNyovLQY0BMqYRvJTegu2Oj14mIyVHsGPUoAbwOcP+cQBUbIrN hghWz47vHLcXOImX+Jv62GkUTw7zX7ftkdFq4+ny+WG7PgouW6HZpdmETmvi5onMPFfpkbMRkQM IYkLkKifD9KuJIoINBgGEGXcYGCwQSEbfUX8hffV7ya3/kBb4202vJZg8z6ZjykrFHSRJ22lLDp hYZ7RmyOq7X56Zi3f+N9ewI6ywlw2KQtzc/mh9Oi0ssqDe6wLblRaJO+arY X-Received: by 2002:a05:600c:4fcf:b0:499:7219:122f with SMTP id 5b1f17b1804b1-4997843073emr24510875e9.4.1786440561565; Tue, 11 Aug 2026 02:29:21 -0700 (PDT) Received: from Ansuel-XPS24.localdomain (host-87-20-3-207.retail.telecomitalia.it. [87.20.3.207]) by smtp.googlemail.com with ESMTPSA id 5b1f17b1804b1-4997402a89bsm56135735e9.0.2026.08.11.02.29.18 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 11 Aug 2026 02:29:20 -0700 (PDT) From: Christian Marangi To: Maxime Chevallier , Andrew Lunn , "David S. Miller" , Eric Dumazet , Jakub Kicinski , Paolo Abeni , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Simon Horman , Jonathan Corbet , Shuah Khan , Christian Marangi , Lorenzo Bianconi , Heiner Kallweit , Russell King , Philipp Zabel , Nathan Chancellor , Nick Desaulniers , Bill Wendling , Justin Stitt , netdev@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, linux-doc@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-mediatek@lists.infradead.org, llvm@lists.linux.dev Subject: [PATCH net-next v13 09/12] net: phylink: add .pcs_link_down PCS OP Date: Tue, 11 Aug 2026 11:28:34 +0200 Message-ID: <20260811092843.673837-10-ansuelsmth@gmail.com> X-Mailer: git-send-email 2.53.0 In-Reply-To: <20260811092843.673837-1-ansuelsmth@gmail.com> References: <20260811092843.673837-1-ansuelsmth@gmail.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.9.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20260811_102923_421026_969BA7A3 X-CRM114-Status: GOOD ( 14.27 ) X-BeenThere: linux-mediatek@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "Linux-mediatek" Errors-To: linux-mediatek-bounces+linux-mediatek=archiver.kernel.org@lists.infradead.org Permit for PCS driver to define specific operation to tear down the link between the MAC and the PCS. This might be needed for some PCS that reset counter or require special reset to correctly work if the link needs to be restored later. On phylink_link_down() call, the additional phylink_pcs_link_down() will be called after .mac_link_down to tear down the link. PCS driver will need to define .pcs_link_down to make use of this. Signed-off-by: Christian Marangi Reviewed-by: Maxime Chevallier --- drivers/net/phy/phylink.c | 9 +++++++++ include/linux/phylink.h | 12 ++++++++++++ 2 files changed, 21 insertions(+) diff --git a/drivers/net/phy/phylink.c b/drivers/net/phy/phylink.c index 39d742c90db7..ef9ccec0cd81 100644 --- a/drivers/net/phy/phylink.c +++ b/drivers/net/phy/phylink.c @@ -990,6 +990,12 @@ static void phylink_pcs_link_up(struct phylink_pcs *pcs, unsigned int neg_mode, pcs->ops->pcs_link_up(pcs, neg_mode, interface, speed, duplex); } +static void phylink_pcs_link_down(struct phylink_pcs *pcs) +{ + if (pcs && pcs->ops->pcs_link_down) + pcs->ops->pcs_link_down(pcs); +} + static void phylink_pcs_disable_eee(struct phylink_pcs *pcs) { if (pcs && pcs->ops->pcs_disable_eee) @@ -1701,6 +1707,9 @@ static void phylink_link_down(struct phylink *pl) pl->mac_ops->mac_link_down(pl->config, pl->act_link_an_mode, pl->cur_interface); + + phylink_pcs_link_down(pl->pcs); + phylink_info(pl, "Link is Down\n"); } diff --git a/include/linux/phylink.h b/include/linux/phylink.h index ca9dfc142388..ea554c0d41f8 100644 --- a/include/linux/phylink.h +++ b/include/linux/phylink.h @@ -528,6 +528,7 @@ struct phylink_pcs { * @pcs_an_restart: restart 802.3z BaseX autonegotiation. * @pcs_link_up: program the PCS for the resolved link configuration * (where necessary). + * @pcs_link_down: tear down link between MAC and PCS. * @pcs_disable_eee: optional notification to PCS that EEE has been disabled * at the MAC. * @pcs_enable_eee: optional notification to PCS that EEE will be enabled at @@ -555,6 +556,7 @@ struct phylink_pcs_ops { void (*pcs_an_restart)(struct phylink_pcs *pcs); void (*pcs_link_up)(struct phylink_pcs *pcs, unsigned int neg_mode, phy_interface_t interface, int speed, int duplex); + void (*pcs_link_down)(struct phylink_pcs *pcs); void (*pcs_disable_eee)(struct phylink_pcs *pcs); void (*pcs_enable_eee)(struct phylink_pcs *pcs); int (*pcs_pre_init)(struct phylink_pcs *pcs); @@ -690,6 +692,16 @@ void pcs_an_restart(struct phylink_pcs *pcs); void pcs_link_up(struct phylink_pcs *pcs, unsigned int neg_mode, phy_interface_t interface, int speed, int duplex); +/** + * pcs_link_down() - tear down link between MAC and PCS + * @pcs: a pointer to a &struct phylink_pcs. + * + * This call will be made just after mac_link_down() to inform the PCS the + * link has gone down. PCS should be configured to stop processing packets + * for transmission and reception. + */ +void pcs_link_down(struct phylink_pcs *pcs); + /** * pcs_disable_eee() - Disable EEE at the PCS * @pcs: a pointer to a &struct phylink_pcs -- 2.53.0