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=-5.1 required=3.0 tests=DKIM_INVALID,DKIM_SIGNED, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI,SPF_HELO_NONE, SPF_PASS,USER_AGENT_SANE_1 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 A261FC33CB1 for ; Sat, 18 Jan 2020 11:23:18 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 6C5B024690 for ; Sat, 18 Jan 2020 11:23:18 +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="LhZ/51kN" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728760AbgARLXR (ORCPT ); Sat, 18 Jan 2020 06:23:17 -0500 Received: from pandora.armlinux.org.uk ([78.32.30.218]:58728 "EHLO pandora.armlinux.org.uk" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727071AbgARLXR (ORCPT ); Sat, 18 Jan 2020 06:23:17 -0500 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=armlinux.org.uk; s=pandora-2019; h=Sender:In-Reply-To:Content-Type: MIME-Version:References:Message-ID:Subject:Cc:To:From:Date:Reply-To: Content-Transfer-Encoding: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=gHOn1x5kWgpscXIClSnxXt3MgjXYwlXWukmSRM8KTug=; b=LhZ/51kNSVRqZWWGaNO7KdPj2 HKOKHcBcrHc5pLnkmfOH9JhOuKPaRL9fmD489WvBF/Rg0j4LZl3tcUevj9yXyD9EM76R4zvGuZ0A6 hyAwcCIxdXqKfFiaNDoFxahygFLv5bY5wcu5Vb+3rnFoJwKmJJa/KpwEeAAxPyAXW0Uu+ZMmf3Ud5 NYX1UnWvFY/3d+gJZ9+7FVgr1AugVE8UP8zfqJh699nDOGkbSMp4eiWj3emImJE6PHB4jfG+84Pjo IdGAHbl9jhpGxdO1OU3tsrFO9Q4tJUfOL9slkDGepc1RSIpsuy0Xz2+m80jjS8bF66a4kfVLfW2MS Q+dCR7Rog==; Received: from shell.armlinux.org.uk ([fd8f:7570:feb6:1:5054:ff:fe00:4ec]:39958) by pandora.armlinux.org.uk with esmtpsa (TLSv1.2:ECDHE-RSA-AES256-GCM-SHA384:256) (Exim 4.90_1) (envelope-from ) id 1ismC4-0002GV-Dx; Sat, 18 Jan 2020 11:23:08 +0000 Received: from linux by shell.armlinux.org.uk with local (Exim 4.92) (envelope-from ) id 1ismBv-0000px-2P; Sat, 18 Jan 2020 11:22:59 +0000 Date: Sat, 18 Jan 2020 11:22:59 +0000 From: Russell King - ARM Linux admin To: Andre Przywara Cc: Andrew Lunn , netdev@vger.kernel.org, Radhey Shyam Pandey , Michal Simek , linux-kernel@vger.kernel.org, Robert Hancock , "David S . Miller" , linux-arm-kernel@lists.infradead.org Subject: Re: [PATCH 07/14] net: axienet: Fix SGMII support Message-ID: <20200118112258.GT25745@shell.armlinux.org.uk> References: <20200110115415.75683-1-andre.przywara@arm.com> <20200110115415.75683-8-andre.przywara@arm.com> <20200110140415.GE19739@lunn.ch> <20200110142038.2ed094ba@donnerap.cambridge.arm.com> <20200110150409.GD25745@shell.armlinux.org.uk> <20200110152215.GF25745@shell.armlinux.org.uk> <20200110170457.GH25745@shell.armlinux.org.uk> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20200110170457.GH25745@shell.armlinux.org.uk> User-Agent: Mutt/1.10.1 (2018-07-13) Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Fri, Jan 10, 2020 at 05:04:57PM +0000, Russell King - ARM Linux admin wrote: > Maybe something like the below will help? > > Basically, use phylink_mii_pcs_get_state() instead of > axienet_mac_pcs_get_state(), and setup lp->phylink_config.pcs_mii > to point at the MII bus, and lp->phylink_config.pcs_mii_addr to > access the internal PHY (as per C_PHYADDR parameter.) > > You may have some fuzz (with gnu patch) while trying to apply this, > as you won't have the context for the first and last hunks in this > patch. > > This will probably not be the final version of the patch anyway; > there's some possibility to pull some of the functionality out of > phylib into a more general library which would avoid some of the > functional duplication. Hi Andre, Did you have a chance to see whether this helps? Russell. > > diff --git a/drivers/net/phy/phylink.c b/drivers/net/phy/phylink.c > index 75a74a16dc3d..44198fdb3c01 100644 > --- a/drivers/net/phy/phylink.c > +++ b/drivers/net/phy/phylink.c > @@ -2073,4 +2073,105 @@ phy_interface_t phylink_select_serdes_interface(unsigned long *interfaces, > } > EXPORT_SYMBOL_GPL(phylink_select_serdes_interface); > > +static void phylink_decode_advertisement(struct phylink_link_state *state) > +{ > + __ETHTOOL_DECLARE_LINK_MODE_MASK(u); > + > + linkmode_and(u, state->lp_advertising, state->advertising); > + > + if (linkmode_test_bit(ETHTOOL_LINK_MODE_Pause_BIT, u)) { > + state->pause = MLO_PAUSE_RX | MLO_PAUSE_TX; > + } else if (linkmode_test_bit(ETHTOOL_LINK_MODE_Asym_Pause_BIT, u)) { > + if (linkmode_test_bit(ETHTOOL_LINK_MODE_Pause_BIT, > + state->lp_advertising)) > + state->pause |= MLO_PAUSE_TX; > + if (linkmode_test_bit(ETHTOOL_LINK_MODE_Pause_BIT, > + state->advertising)) > + state->pause |= MLO_PAUSE_RX; > + } > + > + if (linkmode_test_bit(ETHTOOL_LINK_MODE_2500baseX_Full_BIT, u)) { > + state->speed = SPEED_2500; > + state->duplex = DUPLEX_FULL; > + } else if (linkmode_test_bit(ETHTOOL_LINK_MODE_1000baseX_Full_BIT, u)) { > + state->pause = SPEED_1000; > + state->duplex = DUPLEX_FULL; > + } else { > + state->link = false; > + } > +} > + > +void phylink_mii_pcs_get_state(struct phylink_config *config, > + struct phylink_link_state *state) > +{ > + struct mii_bus *bus = config->pcs_mii; > + int addr = config->pcs_mii_addr; > + int bmsr, lpa; > + > + bmsr = mdiobus_read(bus, addr, MII_BMSR); > + lpa = mdiobus_read(bus, addr, MII_LPA); > + if (bmsr < 0 || lpa < 0) { > + state->link = false; > + return; > + } > + > + state->link = !!(bmsr & BMSR_LSTATUS); > + state->an_complete = !!(bmsr & BMSR_ANEGCOMPLETE); > + > + switch (state->interface) { > + case PHY_INTERFACE_MODE_1000BASEX: > + if (lpa & LPA_1000XFULL) > + linkmode_set_bit(ETHTOOL_LINK_MODE_1000baseX_Full_BIT, > + state->lp_advertising); > + goto lpa_8023z; > + > + case PHY_INTERFACE_MODE_2500BASEX: > + if (lpa & LPA_1000XFULL) > + linkmode_set_bit(ETHTOOL_LINK_MODE_2500baseX_Full_BIT, > + state->lp_advertising); > + lpa_8023z: > + if (lpa & LPA_1000XPAUSE) > + linkmode_set_bit(ETHTOOL_LINK_MODE_Pause_BIT, > + state->lp_advertising); > + if (lpa & LPA_1000XPAUSE_ASYM) > + linkmode_set_bit(ETHTOOL_LINK_MODE_Asym_Pause_BIT, > + state->lp_advertising); > + if (lpa & LPA_LPACK) > + linkmode_set_bit(ETHTOOL_LINK_MODE_Autoneg_BIT, > + state->lp_advertising); > + phylink_decode_advertisement(state); > + break; > + > + case PHY_INTERFACE_MODE_SGMII: > + switch (lpa & 0x8c00) { > + case 0x8000: > + state->speed = SPEED_10; > + break; > + case 0x8400: > + state->speed = SPEED_100; > + break; > + case 0x8800: > + state->speed = SPEED_1000; > + break; > + default: > + state->link = false; > + break; > + } > + switch (lpa & 0x9000) { > + case 0x9000: > + state->duplex = DUPLEX_FULL; > + break; > + case 0x8000: > + state->duplex = DUPLEX_HALF; > + break; > + } > + break; > + > + default: > + state->link = false; > + break; > + } > +} > +EXPORT_SYMBOL_GPL(phylink_mii_pcs_get_state); > + > MODULE_LICENSE("GPL v2"); > diff --git a/include/linux/phylink.h b/include/linux/phylink.h > index 4ea76e083847..cf0fa39b4b21 100644 > --- a/include/linux/phylink.h > +++ b/include/linux/phylink.h > @@ -65,6 +65,9 @@ enum phylink_op_type { > struct phylink_config { > struct device *dev; > enum phylink_op_type type; > + > + struct mii_bus *pcs_mii; > + int pcs_mii_addr; > }; > > /** > @@ -292,4 +295,7 @@ phy_interface_t phylink_select_serdes_interface(unsigned long *interfaces, > const phy_interface_t *pref, > size_t nprefs); > > +void phylink_mii_pcs_get_state(struct phylink_config *config, > + struct phylink_link_state *state); > + > #endif > > -- > RMK's Patch system: https://www.armlinux.org.uk/developer/patches/ > FTTC broadband for 0.8mile line in suburbia: sync at 12.1Mbps down 622kbps up > According to speedtest.net: 11.9Mbps down 500kbps up > > _______________________________________________ > linux-arm-kernel mailing list > linux-arm-kernel@lists.infradead.org > http://lists.infradead.org/mailman/listinfo/linux-arm-kernel > -- RMK's Patch system: https://www.armlinux.org.uk/developer/patches/ FTTC broadband for 0.8mile line in suburbia: sync at 12.1Mbps down 622kbps up According to speedtest.net: 11.9Mbps down 500kbps up 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=-5.3 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI, SPF_HELO_NONE,SPF_PASS,USER_AGENT_SANE_1 autolearn=unavailable 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 9DB9BC33CB1 for ; 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Sat, 18 Jan 2020 11:23:08 +0000 Received: from linux by shell.armlinux.org.uk with local (Exim 4.92) (envelope-from ) id 1ismBv-0000px-2P; Sat, 18 Jan 2020 11:22:59 +0000 Date: Sat, 18 Jan 2020 11:22:59 +0000 From: Russell King - ARM Linux admin To: Andre Przywara Subject: Re: [PATCH 07/14] net: axienet: Fix SGMII support Message-ID: <20200118112258.GT25745@shell.armlinux.org.uk> References: <20200110115415.75683-1-andre.przywara@arm.com> <20200110115415.75683-8-andre.przywara@arm.com> <20200110140415.GE19739@lunn.ch> <20200110142038.2ed094ba@donnerap.cambridge.arm.com> <20200110150409.GD25745@shell.armlinux.org.uk> <20200110152215.GF25745@shell.armlinux.org.uk> <20200110170457.GH25745@shell.armlinux.org.uk> MIME-Version: 1.0 Content-Disposition: inline In-Reply-To: <20200110170457.GH25745@shell.armlinux.org.uk> User-Agent: Mutt/1.10.1 (2018-07-13) X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20200118_032329_604110_04C6DEFE X-CRM114-Status: GOOD ( 18.73 ) 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 , netdev@vger.kernel.org, Radhey Shyam Pandey , Michal Simek , linux-kernel@vger.kernel.org, Robert Hancock , "David S . Miller" , linux-arm-kernel@lists.infradead.org Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+infradead-linux-arm-kernel=archiver.kernel.org@lists.infradead.org On Fri, Jan 10, 2020 at 05:04:57PM +0000, Russell King - ARM Linux admin wrote: > Maybe something like the below will help? > > Basically, use phylink_mii_pcs_get_state() instead of > axienet_mac_pcs_get_state(), and setup lp->phylink_config.pcs_mii > to point at the MII bus, and lp->phylink_config.pcs_mii_addr to > access the internal PHY (as per C_PHYADDR parameter.) > > You may have some fuzz (with gnu patch) while trying to apply this, > as you won't have the context for the first and last hunks in this > patch. > > This will probably not be the final version of the patch anyway; > there's some possibility to pull some of the functionality out of > phylib into a more general library which would avoid some of the > functional duplication. Hi Andre, Did you have a chance to see whether this helps? Russell. > > diff --git a/drivers/net/phy/phylink.c b/drivers/net/phy/phylink.c > index 75a74a16dc3d..44198fdb3c01 100644 > --- a/drivers/net/phy/phylink.c > +++ b/drivers/net/phy/phylink.c > @@ -2073,4 +2073,105 @@ phy_interface_t phylink_select_serdes_interface(unsigned long *interfaces, > } > EXPORT_SYMBOL_GPL(phylink_select_serdes_interface); > > +static void phylink_decode_advertisement(struct phylink_link_state *state) > +{ > + __ETHTOOL_DECLARE_LINK_MODE_MASK(u); > + > + linkmode_and(u, state->lp_advertising, state->advertising); > + > + if (linkmode_test_bit(ETHTOOL_LINK_MODE_Pause_BIT, u)) { > + state->pause = MLO_PAUSE_RX | MLO_PAUSE_TX; > + } else if (linkmode_test_bit(ETHTOOL_LINK_MODE_Asym_Pause_BIT, u)) { > + if (linkmode_test_bit(ETHTOOL_LINK_MODE_Pause_BIT, > + state->lp_advertising)) > + state->pause |= MLO_PAUSE_TX; > + if (linkmode_test_bit(ETHTOOL_LINK_MODE_Pause_BIT, > + state->advertising)) > + state->pause |= MLO_PAUSE_RX; > + } > + > + if (linkmode_test_bit(ETHTOOL_LINK_MODE_2500baseX_Full_BIT, u)) { > + state->speed = SPEED_2500; > + state->duplex = DUPLEX_FULL; > + } else if (linkmode_test_bit(ETHTOOL_LINK_MODE_1000baseX_Full_BIT, u)) { > + state->pause = SPEED_1000; > + state->duplex = DUPLEX_FULL; > + } else { > + state->link = false; > + } > +} > + > +void phylink_mii_pcs_get_state(struct phylink_config *config, > + struct phylink_link_state *state) > +{ > + struct mii_bus *bus = config->pcs_mii; > + int addr = config->pcs_mii_addr; > + int bmsr, lpa; > + > + bmsr = mdiobus_read(bus, addr, MII_BMSR); > + lpa = mdiobus_read(bus, addr, MII_LPA); > + if (bmsr < 0 || lpa < 0) { > + state->link = false; > + return; > + } > + > + state->link = !!(bmsr & BMSR_LSTATUS); > + state->an_complete = !!(bmsr & BMSR_ANEGCOMPLETE); > + > + switch (state->interface) { > + case PHY_INTERFACE_MODE_1000BASEX: > + if (lpa & LPA_1000XFULL) > + linkmode_set_bit(ETHTOOL_LINK_MODE_1000baseX_Full_BIT, > + state->lp_advertising); > + goto lpa_8023z; > + > + case PHY_INTERFACE_MODE_2500BASEX: > + if (lpa & LPA_1000XFULL) > + linkmode_set_bit(ETHTOOL_LINK_MODE_2500baseX_Full_BIT, > + state->lp_advertising); > + lpa_8023z: > + if (lpa & LPA_1000XPAUSE) > + linkmode_set_bit(ETHTOOL_LINK_MODE_Pause_BIT, > + state->lp_advertising); > + if (lpa & LPA_1000XPAUSE_ASYM) > + linkmode_set_bit(ETHTOOL_LINK_MODE_Asym_Pause_BIT, > + state->lp_advertising); > + if (lpa & LPA_LPACK) > + linkmode_set_bit(ETHTOOL_LINK_MODE_Autoneg_BIT, > + state->lp_advertising); > + phylink_decode_advertisement(state); > + break; > + > + case PHY_INTERFACE_MODE_SGMII: > + switch (lpa & 0x8c00) { > + case 0x8000: > + state->speed = SPEED_10; > + break; > + case 0x8400: > + state->speed = SPEED_100; > + break; > + case 0x8800: > + state->speed = SPEED_1000; > + break; > + default: > + state->link = false; > + break; > + } > + switch (lpa & 0x9000) { > + case 0x9000: > + state->duplex = DUPLEX_FULL; > + break; > + case 0x8000: > + state->duplex = DUPLEX_HALF; > + break; > + } > + break; > + > + default: > + state->link = false; > + break; > + } > +} > +EXPORT_SYMBOL_GPL(phylink_mii_pcs_get_state); > + > MODULE_LICENSE("GPL v2"); > diff --git a/include/linux/phylink.h b/include/linux/phylink.h > index 4ea76e083847..cf0fa39b4b21 100644 > --- a/include/linux/phylink.h > +++ b/include/linux/phylink.h > @@ -65,6 +65,9 @@ enum phylink_op_type { > struct phylink_config { > struct device *dev; > enum phylink_op_type type; > + > + struct mii_bus *pcs_mii; > + int pcs_mii_addr; > }; > > /** > @@ -292,4 +295,7 @@ phy_interface_t phylink_select_serdes_interface(unsigned long *interfaces, > const phy_interface_t *pref, > size_t nprefs); > > +void phylink_mii_pcs_get_state(struct phylink_config *config, > + struct phylink_link_state *state); > + > #endif > > -- > RMK's Patch system: https://www.armlinux.org.uk/developer/patches/ > FTTC broadband for 0.8mile line in suburbia: sync at 12.1Mbps down 622kbps up > According to speedtest.net: 11.9Mbps down 500kbps up > > _______________________________________________ > linux-arm-kernel mailing list > linux-arm-kernel@lists.infradead.org > http://lists.infradead.org/mailman/listinfo/linux-arm-kernel > -- RMK's Patch system: https://www.armlinux.org.uk/developer/patches/ FTTC broadband for 0.8mile line in suburbia: sync at 12.1Mbps down 622kbps up According to speedtest.net: 11.9Mbps down 500kbps up _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel