From patchwork Mon May 4 13:44:22 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Nicolas Ferre X-Patchwork-Id: 11526013 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 4BA0414C0 for ; Mon, 4 May 2020 13:47:30 +0000 (UTC) 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 mail.kernel.org (Postfix) with ESMTPS id 299AB21582 for ; Mon, 4 May 2020 13:47:30 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=lists.infradead.org header.i=@lists.infradead.org header.b="LR3Jd7le"; dkim=fail reason="signature verification failed" (2048-bit key) header.d=microchip.com header.i=@microchip.com header.b="xWik7MKI" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 299AB21582 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=microchip.com Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20170209; h=Sender: Content-Transfer-Encoding:Content-Type:Cc:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:MIME-Version:References:In-Reply-To: Message-ID:Date:Subject:To:From:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=0iFX5dJwIJC4oo9j67FaX5/qrwiIurASm8Ea1LK40yo=; b=LR3Jd7leeQjARn hpXTJt2bo48f6Xl//JTjju1xvqv1vB9K31q7TbVEobIOf3srCJiwiiB4kIvi4ODORvjzsTqBAObf3 /mSRi8ltfZo5B6X97Ay9FIdq8vWyToW4on/lBvmKhQwlGpVVXE0EB3xklBtZkphpF94gXRWDqn6NC aQy+uztDZby3PwCOqySVAO8KuN8iFxPV+SaYYT71TKE+mG1yEfXlV582Uz3BiyNgSI585iG/bWLTs vQfocum0CgCtKBHCLecKQ+yYaE51O/r7Yv+5O855QXZbwH1jltcIJU+HuxHcCHb8A1AvIU8hGvnie DFPjauLHpvP0SLTgb4Hg==; Received: from localhost ([127.0.0.1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.92.3 #3 (Red Hat Linux)) id 1jVbRP-0007d1-7F; Mon, 04 May 2020 13:47:27 +0000 Received: from esa4.microchip.iphmx.com ([68.232.154.123]) by bombadil.infradead.org with esmtps (Exim 4.92.3 #3 (Red Hat Linux)) id 1jVbQt-00076c-En for linux-arm-kernel@lists.infradead.org; Mon, 04 May 2020 13:46:59 +0000 DKIM-Signature: v=1; a=rsa-sha256; c=simple/simple; d=microchip.com; i=@microchip.com; q=dns/txt; s=mchp; t=1588600015; x=1620136015; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=12xjLzI1c4xmu9itMWLk1HDPDRb1cJVAi53VDaonBYc=; b=xWik7MKIt16Q5SnCNyW+FlIlmcCLjhmxim5bimD/QEZ/oo5yscII1NoL EpnKeGASpq5BnxRFXFqp3WbwF1phDw/4kL1av/qpmMrvkJ8TQhpfck3lZ j7vmxitHzCfuwvuXNEXmfrODHK0oHEH8/dTS6eWkSAp7VTWbpwHWwR4ov QpDGFeB97EVR/m3CsvqlbpRe9achaZaT8P9duDhJ6vapjQID8k/3r03kn u31AaewXyR5Ng7VNAwjtJZfqOLIO8AO7DS/Vx6bGCxV9a+vtTWZUxtfpd bbLHIVJmJDYNC89ZMTVnde1TKo0gyEqWf+gk73VvJ+LNkPEveU3ljvjK2 w==; IronPort-SDR: ZXnc/wUiGFY/B3+inZSWq9bYwDHFMMv3hrflf0gpSWTmhoAoRQl28agtHAlcsB0fncaWN094wj 6m69xlWsR7TZQ5Xt6UQAvMnAkKi7jB5A4N1ih6mVK6fuc3mhGSf+bFPG4u3+/BlFaeJ2LFcQBO Ros5J1KaJ3lXYJRQT1aoSbX5Oxuafoo4gkY45I7J7eT0mOJmvKQNL+iuow+fzLZ5kuRr2wW4rh RKAp+9dKTK+m5NszmJ1KBO8qSes+Nq3HIP+mQwEme7+0EhsxzAIQs244SrkL9XVd+p5oh6P81A 4LM= X-IronPort-AV: E=Sophos;i="5.73,352,1583218800"; d="scan'208";a="72332658" Received: from smtpout.microchip.com (HELO email.microchip.com) ([198.175.253.82]) by esa4.microchip.iphmx.com with ESMTP/TLS/AES256-SHA256; 04 May 2020 06:46:52 -0700 Received: from chn-vm-ex03.mchp-main.com (10.10.85.151) by chn-vm-ex01.mchp-main.com (10.10.85.143) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.1713.5; Mon, 4 May 2020 06:46:53 -0700 Received: from localhost.localdomain (10.10.115.15) by chn-vm-ex03.mchp-main.com (10.10.85.151) with Microsoft SMTP Server id 15.1.1713.5 via Frontend Transport; Mon, 4 May 2020 06:46:49 -0700 From: To: , , "Claudiu Beznea" , Subject: [PATCH v3 7/7] net: macb: Add WoL interrupt support for MACB type of Ethernet controller Date: Mon, 4 May 2020 15:44:22 +0200 Message-ID: X-Mailer: git-send-email 2.26.2 In-Reply-To: References: MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20200504_064655_590846_4EC79385 X-CRM114-Status: GOOD ( 13.01 ) X-Spam-Score: -2.5 (--) X-Spam-Report: SpamAssassin version 3.4.4 on bombadil.infradead.org summary: Content analysis details: (-2.5 points) pts rule name description ---- ---------------------- -------------------------------------------------- -2.3 RCVD_IN_DNSWL_MED RBL: Sender listed at https://www.dnswl.org/, medium trust [68.232.154.123 listed in list.dnswl.org] 0.0 SPF_HELO_NONE SPF: HELO does not publish an SPF Record -0.0 SPF_PASS SPF: sender matches SPF record -0.1 DKIM_VALID Message has at least one valid DKIM or DK signature -0.1 DKIM_VALID_EF Message has a valid DKIM or DK signature from envelope-from domain 0.1 DKIM_SIGNED Message has a DKIM or DK signature, not necessarily valid -0.1 DKIM_VALID_AU Message has a valid DKIM or DK signature from author's domain X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: andrew@lunn.ch, Alexandre Belloni , f.fainelli@gmail.com, michal.simek@xilinx.com, antoine.tenart@bootlin.com, linux@armlinux.org.uk, linux-kernel@vger.kernel.org, "David S. Miller" Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org From: Nicolas Ferre Handle the Wake-on-Lan interrupt for the Cadence MACB Ethernet controller. As we do for the GEM version, we handle of WoL interrupt in a specialized interrupt handler for MACB version that is positionned just between suspend() and resume() calls. Cc: Claudiu Beznea Cc: Harini Katakam Signed-off-by: Nicolas Ferre --- Changes in v2: - Addition of pm_wakeup_event() in WoL IRQ drivers/net/ethernet/cadence/macb_main.c | 39 +++++++++++++++++++++++- 1 file changed, 38 insertions(+), 1 deletion(-) diff --git a/drivers/net/ethernet/cadence/macb_main.c b/drivers/net/ethernet/cadence/macb_main.c index be8454a8535b..f8dc3c1b807b 100644 --- a/drivers/net/ethernet/cadence/macb_main.c +++ b/drivers/net/ethernet/cadence/macb_main.c @@ -1513,6 +1513,35 @@ static void macb_tx_restart(struct macb_queue *queue) macb_writel(bp, NCR, macb_readl(bp, NCR) | MACB_BIT(TSTART)); } +static irqreturn_t macb_wol_interrupt(int irq, void *dev_id) +{ + struct macb_queue *queue = dev_id; + struct macb *bp = queue->bp; + u32 status; + + status = queue_readl(queue, ISR); + + if (unlikely(!status)) + return IRQ_NONE; + + spin_lock(&bp->lock); + + if (status & MACB_BIT(WOL)) { + queue_writel(queue, IDR, MACB_BIT(WOL)); + macb_writel(bp, WOL, 0); + netdev_vdbg(bp->dev, "MACB WoL: queue = %u, isr = 0x%08lx\n", + (unsigned int)(queue - bp->queues), + (unsigned long)status); + if (bp->caps & MACB_CAPS_ISR_CLEAR_ON_WRITE) + queue_writel(queue, ISR, MACB_BIT(WOL)); + pm_wakeup_event(&bp->pdev->dev, 0); + } + + spin_unlock(&bp->lock); + + return IRQ_HANDLED; +} + static irqreturn_t gem_wol_interrupt(int irq, void *dev_id) { struct macb_queue *queue = dev_id; @@ -4586,8 +4615,8 @@ static int __maybe_unused macb_suspend(struct device *dev) /* Change interrupt handler and * Enable WoL IRQ on queue 0 */ + devm_free_irq(dev, bp->queues[0].irq, bp->queues); if (macb_is_gem(bp)) { - devm_free_irq(dev, bp->queues[0].irq, bp->queues); err = devm_request_irq(dev, bp->queues[0].irq, gem_wol_interrupt, IRQF_SHARED, netdev->name, bp->queues); if (err) { @@ -4599,6 +4628,14 @@ static int __maybe_unused macb_suspend(struct device *dev) queue_writel(bp->queues, IER, GEM_BIT(WOL)); gem_writel(bp, WOL, MACB_BIT(MAG)); } else { + err = devm_request_irq(dev, bp->queues[0].irq, macb_wol_interrupt, + IRQF_SHARED, netdev->name, bp->queues); + if (err) { + dev_err(dev, + "Unable to request IRQ %d (error %d)\n", + bp->queues[0].irq, err); + return err; + } queue_writel(bp->queues, IER, MACB_BIT(WOL)); macb_writel(bp, WOL, MACB_BIT(MAG)); }