From patchwork Tue Jun 30 10:15:42 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: "Russell King \(Oracle\)" X-Patchwork-Id: 216812 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=-6.8 required=3.0 tests=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 0EDFEC433DF for ; Tue, 30 Jun 2020 10:15:52 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id D48B420760 for ; Tue, 30 Jun 2020 10:15:51 +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="iArVTnpR" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1732377AbgF3KPt (ORCPT ); Tue, 30 Jun 2020 06:15:49 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:42724 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1732333AbgF3KPq (ORCPT ); Tue, 30 Jun 2020 06:15:46 -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 19531C061755 for ; Tue, 30 Jun 2020 03:15:46 -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:Reply-To:Content-ID :Content-Description:Resent-Date:Resent-From:Resent-Sender:Resent-To: Resent-Cc:Resent-Message-ID:In-Reply-To:References:List-Id:List-Help: List-Unsubscribe:List-Subscribe:List-Post:List-Owner:List-Archive; bh=8rNKPO1NOa9ahIBYcklwrdMurx7H2sX2mi3XN4cm/FA=; b=iArVTnpRzuCj0tNK01fn1VJ8rO pBuHechmhBMVEhKk+k97ORuW7R8yU/7MMUKcWuYFC6OK511EbGrqpPLqW/AmXYsVv9NUoXSRq/4Ir VgUk8+fZUdIJiiSysWy8hX27qOCrSC4AERwMEhM8fGYsP2lvWD2dkfRWgLHi/Rexa52MU/2TlNgnc 4OvvUDVqYCAm60DrpsIvMJoeRuk44uTlTkdIARoNLlrP9/YF+lf9PRdGZ7VG9/0Hl8JjNQ9D3Lc0S XKDwFHmIXi4ClzcRxxobm857iH3BMgDS4XE0UN+hBD2iWfrzcmPa2V6YSnz7LaNdIlm7rk/ih9tdF b+tj+x0A==; Received: from e0022681537dd.dyn.armlinux.org.uk ([fd8f:7570:feb6:1:222:68ff:fe15:37dd]:45896 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 1jqDIk-0000Ng-7z; Tue, 30 Jun 2020 11:15:42 +0100 Received: from rmk by rmk-PC.armlinux.org.uk with local (Exim 4.92) (envelope-from ) id 1jqDIk-0004m5-0L; Tue, 30 Jun 2020 11:15:42 +0100 From: Russell King To: Andrew Lunn , Florian Fainelli , Heiner Kallweit , =?utf-8?b?UmVuw6k=?= van Dorst Cc: "David S. Miller" , netdev@vger.kernel.org, Felix Fietkau , John Crispin , Sean Wang , Mark Lee , Jakub Kicinski , Matthias Brugger , linux-arm-kernel@lists.infradead.org, linux-mediatek@lists.infradead.org Subject: [PATCH RFC net-next] net: mtk_eth_soc: use resolved link config for PCS PHY MIME-Version: 1.0 Content-Disposition: inline Message-Id: Date: Tue, 30 Jun 2020 11:15:42 +0100 Sender: netdev-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org The SGMII PCS PHY needs to be updated with the link configuration in the mac_link_up() call rather than in mac_config(). However, mtk_sgmii_setup_mode_force() programs the SGMII block during mac_config() when using 802.3z interface modes with the link configuration. Split that functionality from mtk_sgmii_setup_mode_force(), moving it to a new mtk_sgmii_link_up() function, and call it from mac_link_up(). This does not look correct to me: 802.3z modes operate at a fixed speed. The contents of mtk_sgmii_link_up() look more appropriate for SGMII mode, but the original code definitely did not call mtk_sgmii_setup_mode_force() for SGMII mode but only 802.3z mode. Signed-off-by: Russell King --- René, can you assist with this patch please - I really think there are problems with the existing code. You call mtk_sgmii_setup_mode_force() in a block which is conditionalised as: if (state->interface == PHY_INTERFACE_MODE_SGMII || phy_interface_mode_is_8023z(state->interface)) { ... if (state->interface != PHY_INTERFACE_MODE_SGMII) err = mtk_sgmii_setup_mode_force(eth->sgmii, sid, state); Hence, mtk_sgmii_setup_mode_force() is only called for 1000BASE-X and 2500BASE-X, which do not support anything but their native speeds. Yet, mtk_sgmii_setup_mode_force() tries to program the SGMII for 10M and 100M. Note that this patch is more about moving uses of state->{speed,duplex} into mac_link_up(), rather than fixing this problem, but I don't think the addition in mtk_mac_link_up(), nor mtk_sgmii_link_up() is of any use. Thanks. drivers/net/ethernet/mediatek/mtk_eth_soc.c | 9 ++++- drivers/net/ethernet/mediatek/mtk_eth_soc.h | 3 +- drivers/net/ethernet/mediatek/mtk_sgmii.c | 37 +++++++++++++++------ 3 files changed, 36 insertions(+), 13 deletions(-) diff --git a/drivers/net/ethernet/mediatek/mtk_eth_soc.c b/drivers/net/ethernet/mediatek/mtk_eth_soc.c index 20db302d31ce..ef9ec3b6a5c8 100644 --- a/drivers/net/ethernet/mediatek/mtk_eth_soc.c +++ b/drivers/net/ethernet/mediatek/mtk_eth_soc.c @@ -326,7 +326,7 @@ static void mtk_mac_config(struct phylink_config *config, unsigned int mode, /* Setup SGMIISYS with the determined property */ if (state->interface != PHY_INTERFACE_MODE_SGMII) err = mtk_sgmii_setup_mode_force(eth->sgmii, sid, - state); + state->interface); else if (phylink_autoneg_inband(mode)) err = mtk_sgmii_setup_mode_an(eth->sgmii, sid); @@ -423,6 +423,13 @@ static void mtk_mac_link_up(struct phylink_config *config, phylink_config); u32 mcr = mtk_r32(mac->hw, MTK_MAC_MCR(mac->id)); + if (phy_interface_mode_is_8023z(interface)) { + /* Decide how GMAC and SGMIISYS be mapped */ + int sid = (MTK_HAS_CAPS(eth->soc->caps, MTK_SHARED_SGMII)) ? + 0 : mac->id; + mtk_sgmii_link_up(eth->sgmii, sid, speed, duplex); + } + mcr &= ~(MAC_MCR_SPEED_100 | MAC_MCR_SPEED_1000 | MAC_MCR_FORCE_DPX | MAC_MCR_FORCE_TX_FC | MAC_MCR_FORCE_RX_FC); diff --git a/drivers/net/ethernet/mediatek/mtk_eth_soc.h b/drivers/net/ethernet/mediatek/mtk_eth_soc.h index 454cfcd465fd..6f4b99bb7bfb 100644 --- a/drivers/net/ethernet/mediatek/mtk_eth_soc.h +++ b/drivers/net/ethernet/mediatek/mtk_eth_soc.h @@ -932,7 +932,8 @@ int mtk_sgmii_init(struct mtk_sgmii *ss, struct device_node *np, u32 ana_rgc3); int mtk_sgmii_setup_mode_an(struct mtk_sgmii *ss, int id); int mtk_sgmii_setup_mode_force(struct mtk_sgmii *ss, int id, - const struct phylink_link_state *state); + phy_interface_t interface); +void mtk_sgmii_link_up(struct mtk_sgmii *ss, int id, int speed, int duplex); void mtk_sgmii_restart_an(struct mtk_eth *eth, int mac_id); int mtk_gmac_sgmii_path_setup(struct mtk_eth *eth, int mac_id); diff --git a/drivers/net/ethernet/mediatek/mtk_sgmii.c b/drivers/net/ethernet/mediatek/mtk_sgmii.c index 32d83421226a..372c85c830b5 100644 --- a/drivers/net/ethernet/mediatek/mtk_sgmii.c +++ b/drivers/net/ethernet/mediatek/mtk_sgmii.c @@ -60,7 +60,7 @@ int mtk_sgmii_setup_mode_an(struct mtk_sgmii *ss, int id) } int mtk_sgmii_setup_mode_force(struct mtk_sgmii *ss, int id, - const struct phylink_link_state *state) + phy_interface_t interface) { unsigned int val; @@ -69,7 +69,7 @@ int mtk_sgmii_setup_mode_force(struct mtk_sgmii *ss, int id, regmap_read(ss->regmap[id], ss->ana_rgc3, &val); val &= ~RG_PHY_SPEED_MASK; - if (state->interface == PHY_INTERFACE_MODE_2500BASEX) + if (interface == PHY_INTERFACE_MODE_2500BASEX) val |= RG_PHY_SPEED_3_125G; regmap_write(ss->regmap[id], ss->ana_rgc3, val); @@ -78,11 +78,33 @@ int mtk_sgmii_setup_mode_force(struct mtk_sgmii *ss, int id, val &= ~SGMII_AN_ENABLE; regmap_write(ss->regmap[id], SGMSYS_PCS_CONTROL_1, val); + if (interface == PHY_INTERFACE_MODE_1000BASEX || + interface == PHY_INTERFACE_MODE_2500BASEX) { + /* SGMII force mode setting */ + regmap_read(ss->regmap[id], SGMSYS_SGMII_MODE, &val); + val &= ~SGMII_IF_MODE_MASK; + val |= SGMII_SPEED_1000; + val |= SGMII_DUPLEX_FULL; + regmap_write(ss->regmap[id], SGMSYS_SGMII_MODE, val); + } + + /* Release PHYA power down state */ + regmap_read(ss->regmap[id], SGMSYS_QPHY_PWR_STATE_CTRL, &val); + val &= ~SGMII_PHYA_PWD; + regmap_write(ss->regmap[id], SGMSYS_QPHY_PWR_STATE_CTRL, val); + + return 0; +} + +void mtk_sgmii_link_up(struct mtk_sgmii *ss, int id, int speed, int duplex) +{ + unsigned int val; + /* SGMII force mode setting */ regmap_read(ss->regmap[id], SGMSYS_SGMII_MODE, &val); val &= ~SGMII_IF_MODE_MASK; - switch (state->speed) { + switch (speed) { case SPEED_10: val |= SGMII_SPEED_10; break; @@ -95,17 +117,10 @@ int mtk_sgmii_setup_mode_force(struct mtk_sgmii *ss, int id, break; } - if (state->duplex == DUPLEX_FULL) + if (duplex == DUPLEX_FULL) val |= SGMII_DUPLEX_FULL; regmap_write(ss->regmap[id], SGMSYS_SGMII_MODE, val); - - /* Release PHYA power down state */ - regmap_read(ss->regmap[id], SGMSYS_QPHY_PWR_STATE_CTRL, &val); - val &= ~SGMII_PHYA_PWD; - regmap_write(ss->regmap[id], SGMSYS_QPHY_PWR_STATE_CTRL, val); - - return 0; } void mtk_sgmii_restart_an(struct mtk_eth *eth, int mac_id)