From patchwork Fri Sep 4 07:29:11 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "Russell King \(Oracle\)" X-Patchwork-Id: 261535 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=-9.8 required=3.0 tests=BAYES_00,DKIM_INVALID, DKIM_SIGNED, HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH, MAILING_LIST_MULTI, SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED 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 7576BC43461 for ; Fri, 4 Sep 2020 07:29:22 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 38320206D4 for ; Fri, 4 Sep 2020 07:29:22 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=fail reason="signature verification failed" (2048-bit key) header.d=armlinux.org.uk header.i=@armlinux.org.uk header.b="qdeW1xaQ" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1729655AbgIDH3V (ORCPT ); Fri, 4 Sep 2020 03:29:21 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:51734 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1728205AbgIDH3S (ORCPT ); Fri, 4 Sep 2020 03:29:18 -0400 Received: from pandora.armlinux.org.uk (pandora.armlinux.org.uk [IPv6:2001:4d48:ad52:32c8:5054:ff:fe00:142]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 99807C061244 for ; Fri, 4 Sep 2020 00:29:18 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=armlinux.org.uk; s=pandora-2019; h=Date:Sender:Message-Id:Content-Type: Content-Transfer-Encoding:MIME-Version:Subject:Cc:To:From:References: In-Reply-To:Reply-To:Content-ID:Content-Description:Resent-Date:Resent-From: Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Id:List-Help: List-Unsubscribe:List-Subscribe:List-Post:List-Owner:List-Archive; bh=JMtQFOGUAp+bB8PvyH2Z+74bUr9Mc433bodCglOYdoI=; b=qdeW1xaQ2UuMg7ZrMUtMciKG4t fxxnPLCKtlwpm/3933A/joSxh5WBjm8FfEdci0aExjceml+cLR56TPllPefi03fsdcWvjqLImXZbU L37RLwzZChYQH1WFjO525YaE1gcr44tlSsOTlJCaRlvQkO5M4ajXS3ouuP7DECKSppJkcLPdw33cu 1MW4fbAAZU0ld5f5XRTABfDqtKNrCKUBKXyFDXmeUI9cLoeykX7ZQWBkXL4DZDXn+Dv6AgxdDh94K yB/PZlx1DUKSx/hJdAuARD6EA9v0agO3IDmHbCqO6JkjGMd7yChYkPqzaGn/0K/eoEedoLQA+UM+J a/A97HUw==; Received: from e0022681537dd.dyn.armlinux.org.uk ([fd8f:7570:feb6:1:222:68ff:fe15:37dd]:57904 helo=rmk-PC.armlinux.org.uk) by pandora.armlinux.org.uk with esmtpsa (TLS1.3:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.92) (envelope-from ) id 1kE69o-0007OS-3S; Fri, 04 Sep 2020 08:29:12 +0100 Received: from rmk by rmk-PC.armlinux.org.uk with local (Exim 4.92) (envelope-from ) id 1kE69n-000576-Sg; Fri, 04 Sep 2020 08:29:11 +0100 In-Reply-To: <20200904072828.GQ1551@shell.armlinux.org.uk> References: <20200904072828.GQ1551@shell.armlinux.org.uk> From: Russell King To: Alexandre Belloni , Antoine Tenart , Richard Cochran Cc: Matteo Croce , Andre Przywara , Sven Auhagen , "David S. Miller" , Jakub Kicinski , netdev@vger.kernel.org Subject: [PATCH net-next v2 1/6] net: mvpp2: restructure "link status" interrupt handling MIME-Version: 1.0 Content-Disposition: inline Message-Id: Date: Fri, 04 Sep 2020 08:29:11 +0100 Sender: netdev-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org The "link status" interrupt is used for more than just link status. Restructure mvpp2_link_status_isr() so we can add additional handling. Reviewed-by: Andrew Lunn Signed-off-by: Russell King --- .../net/ethernet/marvell/mvpp2/mvpp2_main.c | 83 ++++++++++++------- 1 file changed, 51 insertions(+), 32 deletions(-) diff --git a/drivers/net/ethernet/marvell/mvpp2/mvpp2_main.c b/drivers/net/ethernet/marvell/mvpp2/mvpp2_main.c index d0bbe3a64b8d..81473911a822 100644 --- a/drivers/net/ethernet/marvell/mvpp2/mvpp2_main.c +++ b/drivers/net/ethernet/marvell/mvpp2/mvpp2_main.c @@ -2974,44 +2974,17 @@ static irqreturn_t mvpp2_isr(int irq, void *dev_id) return IRQ_HANDLED; } -/* Per-port interrupt for link status changes */ -static irqreturn_t mvpp2_link_status_isr(int irq, void *dev_id) +static void mvpp2_isr_handle_link(struct mvpp2_port *port, bool link) { - struct mvpp2_port *port = (struct mvpp2_port *)dev_id; struct net_device *dev = port->dev; - bool event = false, link = false; - u32 val; - - mvpp22_gop_mask_irq(port); - - if (mvpp2_port_supports_xlg(port) && - mvpp2_is_xlg(port->phy_interface)) { - val = readl(port->base + MVPP22_XLG_INT_STAT); - if (val & MVPP22_XLG_INT_STAT_LINK) { - event = true; - val = readl(port->base + MVPP22_XLG_STATUS); - if (val & MVPP22_XLG_STATUS_LINK_UP) - link = true; - } - } else if (phy_interface_mode_is_rgmii(port->phy_interface) || - phy_interface_mode_is_8023z(port->phy_interface) || - port->phy_interface == PHY_INTERFACE_MODE_SGMII) { - val = readl(port->base + MVPP22_GMAC_INT_STAT); - if (val & MVPP22_GMAC_INT_STAT_LINK) { - event = true; - val = readl(port->base + MVPP2_GMAC_STATUS0); - if (val & MVPP2_GMAC_STATUS0_LINK_UP) - link = true; - } - } if (port->phylink) { phylink_mac_change(port->phylink, link); - goto handled; + return; } - if (!netif_running(dev) || !event) - goto handled; + if (!netif_running(dev)) + return; if (link) { mvpp2_interrupts_enable(port); @@ -3028,8 +3001,54 @@ static irqreturn_t mvpp2_link_status_isr(int irq, void *dev_id) mvpp2_interrupts_disable(port); } +} + +static void mvpp2_isr_handle_xlg(struct mvpp2_port *port) +{ + bool link; + u32 val; + + val = readl(port->base + MVPP22_XLG_INT_STAT); + if (val & MVPP22_XLG_INT_STAT_LINK) { + val = readl(port->base + MVPP22_XLG_STATUS); + if (val & MVPP22_XLG_STATUS_LINK_UP) + link = true; + mvpp2_isr_handle_link(port, link); + } +} + +static void mvpp2_isr_handle_gmac_internal(struct mvpp2_port *port) +{ + bool link; + u32 val; + + if (phy_interface_mode_is_rgmii(port->phy_interface) || + phy_interface_mode_is_8023z(port->phy_interface) || + port->phy_interface == PHY_INTERFACE_MODE_SGMII) { + val = readl(port->base + MVPP22_GMAC_INT_STAT); + if (val & MVPP22_GMAC_INT_STAT_LINK) { + val = readl(port->base + MVPP2_GMAC_STATUS0); + if (val & MVPP2_GMAC_STATUS0_LINK_UP) + link = true; + mvpp2_isr_handle_link(port, link); + } + } +} + +/* Per-port interrupt for link status changes */ +static irqreturn_t mvpp2_link_status_isr(int irq, void *dev_id) +{ + struct mvpp2_port *port = (struct mvpp2_port *)dev_id; + + mvpp22_gop_mask_irq(port); + + if (mvpp2_port_supports_xlg(port) && + mvpp2_is_xlg(port->phy_interface)) { + mvpp2_isr_handle_xlg(port); + } else { + mvpp2_isr_handle_gmac_internal(port); + } -handled: mvpp22_gop_unmask_irq(port); return IRQ_HANDLED; }