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 X-Spam-Level: X-Spam-Status: No, score=-6.1 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SIGNED_OFF_BY, SPF_PASS,URIBL_BLOCKED,USER_AGENT_GIT 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 0FD7FC43381 for ; Mon, 18 Feb 2019 14:23:43 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id D214821902 for ; Mon, 18 Feb 2019 14:23:42 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1550499822; bh=Is6tAJa3lftB0TzA673/Hzzonh7YC/6FLMJ193h0Qi8=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=qp+4rrA/UH7UlhH1X6Aoum1ArubsSPjP7x2oGZMFkNNJ/isA15yD/6hiPFmOTrU6r gEnmq5+v3Bl4gcsbb7bPS7/2OfxcLi5JC1NugFKPMz14V4p2pzINXlL7oI+GOgahkF 0mE6crtU4hocO56nKKt8RgblZjSazGMYWQUyOB1o= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2389904AbfBROE1 (ORCPT ); Mon, 18 Feb 2019 09:04:27 -0500 Received: from mail.kernel.org ([198.145.29.99]:46848 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S2389292AbfBROEY (ORCPT ); Mon, 18 Feb 2019 09:04:24 -0500 Received: from localhost (5356596B.cm-6-7b.dynamic.ziggo.nl [83.86.89.107]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id 8D15221901; Mon, 18 Feb 2019 14:04:22 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1550498663; bh=Is6tAJa3lftB0TzA673/Hzzonh7YC/6FLMJ193h0Qi8=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=SdtbRKDsFhg9c3hva5gF5hbFIGRWjMNIbIsii24/h6Wfhp8RD7RG8PkR4oiipw5Sr LpXcnR4SHw3t23ASILxVdKPLAqUjkjaBZsseZHehp0xp0ZIRiYS1t6MQKVrCWKnLg7 p5+kb9uWuVLZS9GlYqWeF7w66ImOWiwjlDXB0h2w= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Florian Fainelli , "David S. Miller" Subject: [PATCH 4.4 081/143] net: systemport: Fix WoL with password after deep sleep Date: Mon, 18 Feb 2019 14:43:29 +0100 Message-Id: <20190218133532.037665967@linuxfoundation.org> X-Mailer: git-send-email 2.20.1 In-Reply-To: <20190218133529.099444112@linuxfoundation.org> References: <20190218133529.099444112@linuxfoundation.org> User-Agent: quilt/0.65 X-stable: review X-Patchwork-Hint: ignore MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org 4.4-stable review patch. If anyone has any objections, please let me know. ------------------ From: Florian Fainelli [ Upstream commit 8dfb8d2cceb76b74ad5b58cc65c75994329b4d5e ] Broadcom STB chips support a deep sleep mode where all register contents are lost. Because we were stashing the MagicPacket password into some of these registers a suspend into that deep sleep then a resumption would not lead to being able to wake-up from MagicPacket with password again. Fix this by keeping a software copy of the password and program it during suspend. Fixes: 83e82f4c706b ("net: systemport: add Wake-on-LAN support") Signed-off-by: Florian Fainelli Signed-off-by: David S. Miller Signed-off-by: Greg Kroah-Hartman --- drivers/net/ethernet/broadcom/bcmsysport.c | 25 ++++++++++--------------- drivers/net/ethernet/broadcom/bcmsysport.h | 2 ++ 2 files changed, 12 insertions(+), 15 deletions(-) --- a/drivers/net/ethernet/broadcom/bcmsysport.c +++ b/drivers/net/ethernet/broadcom/bcmsysport.c @@ -400,7 +400,6 @@ static void bcm_sysport_get_wol(struct n struct ethtool_wolinfo *wol) { struct bcm_sysport_priv *priv = netdev_priv(dev); - u32 reg; wol->supported = WAKE_MAGIC | WAKE_MAGICSECURE; wol->wolopts = priv->wolopts; @@ -408,11 +407,7 @@ static void bcm_sysport_get_wol(struct n if (!(priv->wolopts & WAKE_MAGICSECURE)) return; - /* Return the programmed SecureOn password */ - reg = umac_readl(priv, UMAC_PSW_MS); - put_unaligned_be16(reg, &wol->sopass[0]); - reg = umac_readl(priv, UMAC_PSW_LS); - put_unaligned_be32(reg, &wol->sopass[2]); + memcpy(wol->sopass, priv->sopass, sizeof(priv->sopass)); } static int bcm_sysport_set_wol(struct net_device *dev, @@ -428,13 +423,8 @@ static int bcm_sysport_set_wol(struct ne if (wol->wolopts & ~supported) return -EINVAL; - /* Program the SecureOn password */ - if (wol->wolopts & WAKE_MAGICSECURE) { - umac_writel(priv, get_unaligned_be16(&wol->sopass[0]), - UMAC_PSW_MS); - umac_writel(priv, get_unaligned_be32(&wol->sopass[2]), - UMAC_PSW_LS); - } + if (wol->wolopts & WAKE_MAGICSECURE) + memcpy(priv->sopass, wol->sopass, sizeof(priv->sopass)); /* Flag the device and relevant IRQ as wakeup capable */ if (wol->wolopts) { @@ -1889,12 +1879,17 @@ static int bcm_sysport_suspend_to_wol(st unsigned int timeout = 1000; u32 reg; - /* Password has already been programmed */ reg = umac_readl(priv, UMAC_MPD_CTRL); reg |= MPD_EN; reg &= ~PSW_EN; - if (priv->wolopts & WAKE_MAGICSECURE) + if (priv->wolopts & WAKE_MAGICSECURE) { + /* Program the SecureOn password */ + umac_writel(priv, get_unaligned_be16(&priv->sopass[0]), + UMAC_PSW_MS); + umac_writel(priv, get_unaligned_be32(&priv->sopass[2]), + UMAC_PSW_LS); reg |= PSW_EN; + } umac_writel(priv, reg, UMAC_MPD_CTRL); /* Make sure RBUF entered WoL mode as result */ --- a/drivers/net/ethernet/broadcom/bcmsysport.h +++ b/drivers/net/ethernet/broadcom/bcmsysport.h @@ -11,6 +11,7 @@ #ifndef __BCM_SYSPORT_H #define __BCM_SYSPORT_H +#include #include /* Receive/transmit descriptor format */ @@ -682,6 +683,7 @@ struct bcm_sysport_priv { unsigned int crc_fwd:1; u16 rev; u32 wolopts; + u8 sopass[SOPASS_MAX]; unsigned int wol_irq_disabled:1; /* MIB related fields */