From patchwork Fri Feb 3 07:00:21 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Daniel Golle X-Patchwork-Id: 13127059 X-Patchwork-Delegate: kuba@kernel.org Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 2B072C636CC for ; Fri, 3 Feb 2023 07:02:10 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231614AbjBCHCJ (ORCPT ); Fri, 3 Feb 2023 02:02:09 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:52570 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S230343AbjBCHCH (ORCPT ); Fri, 3 Feb 2023 02:02:07 -0500 Received: from fudo.makrotopia.org (fudo.makrotopia.org [IPv6:2a07:2ec0:3002::71]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 529E28E69F; Thu, 2 Feb 2023 23:02:06 -0800 (PST) Received: from local by fudo.makrotopia.org with esmtpsa (TLS1.3:TLS_AES_256_GCM_SHA384:256) (Exim 4.96) (envelope-from ) id 1pNq5C-0000nM-0x; Fri, 03 Feb 2023 08:02:02 +0100 Date: Fri, 3 Feb 2023 07:00:21 +0000 From: Daniel Golle To: netdev@vger.kernel.org, linux-mediatek@lists.infradead.org, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, Russell King , Heiner Kallweit , Lorenzo Bianconi , Mark Lee , John Crispin , Felix Fietkau , AngeloGioacchino Del Regno , Matthias Brugger , DENG Qingfang , Landen Chao , Sean Wang , Paolo Abeni , Jakub Kicinski , Eric Dumazet , "David S. Miller" , Vladimir Oltean , Florian Fainelli , Andrew Lunn Cc: Jianhui Zhao , =?iso-8859-1?q?Bj=F8rn?= Mork Subject: [PATCH 1/9] net: ethernet: mtk_eth_soc: add support for MT7981 SoC Message-ID: <301fa3e888d686283090d58a060579d8c2a5bebb.1675407169.git.daniel@makrotopia.org> References: MIME-Version: 1.0 Content-Disposition: inline In-Reply-To: Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org X-Patchwork-Delegate: kuba@kernel.org The MediaTek MT7981 SoC comes two 1G/2.5G SGMII, just like MT7986. In addition MT7981 comes with a built-in 1000Base-T PHY which can be used with GMAC1. As many MT7981 boards make use of swapping SGMII phase and neutral, add new device-tree attribute 'mediatek,pn_swap' to support them. Signed-off-by: Daniel Golle --- drivers/net/ethernet/mediatek/mtk_eth_path.c | 14 +++++++-- drivers/net/ethernet/mediatek/mtk_eth_soc.c | 21 +++++++++++++ drivers/net/ethernet/mediatek/mtk_eth_soc.h | 31 ++++++++++++++++++++ drivers/net/ethernet/mediatek/mtk_sgmii.c | 10 +++++++ 4 files changed, 73 insertions(+), 3 deletions(-) diff --git a/drivers/net/ethernet/mediatek/mtk_eth_path.c b/drivers/net/ethernet/mediatek/mtk_eth_path.c index 72648535a14d..317e447f4991 100644 --- a/drivers/net/ethernet/mediatek/mtk_eth_path.c +++ b/drivers/net/ethernet/mediatek/mtk_eth_path.c @@ -96,12 +96,20 @@ static int set_mux_gmac2_gmac0_to_gephy(struct mtk_eth *eth, int path) static int set_mux_u3_gmac2_to_qphy(struct mtk_eth *eth, int path) { - unsigned int val = 0; + unsigned int val = 0, mask = 0, reg = 0; bool updated = true; switch (path) { case MTK_ETH_PATH_GMAC2_SGMII: - val = CO_QPHY_SEL; + if (MTK_HAS_CAPS(eth->soc->caps, MTK_U3_COPHY_V2)) { + reg = USB_PHY_SWITCH_REG; + val = SGMII_QPHY_SEL; + mask = QPHY_SEL_MASK; + } else { + reg = INFRA_MISC2; + val = CO_QPHY_SEL; + mask = val; + } break; default: updated = false; @@ -109,7 +117,7 @@ static int set_mux_u3_gmac2_to_qphy(struct mtk_eth *eth, int path) } if (updated) - regmap_update_bits(eth->infra, INFRA_MISC2, CO_QPHY_SEL, val); + regmap_update_bits(eth->infra, reg, mask, val); dev_dbg(eth->dev, "path %s in %s updated = %d\n", mtk_eth_path_name(path), __func__, updated); diff --git a/drivers/net/ethernet/mediatek/mtk_eth_soc.c b/drivers/net/ethernet/mediatek/mtk_eth_soc.c index f1cb1efc94cf..a44ffff48c7b 100644 --- a/drivers/net/ethernet/mediatek/mtk_eth_soc.c +++ b/drivers/net/ethernet/mediatek/mtk_eth_soc.c @@ -4852,6 +4852,26 @@ static const struct mtk_soc_data mt7629_data = { }, }; +static const struct mtk_soc_data mt7981_data = { + .reg_map = &mt7986_reg_map, + .ana_rgc3 = 0x128, + .caps = MT7981_CAPS, + .hw_features = MTK_HW_FEATURES, + .required_clks = MT7981_CLKS_BITMAP, + .required_pctl = false, + .offload_version = 2, + .hash_offset = 4, + .foe_entry_size = sizeof(struct mtk_foe_entry), + .txrx = { + .txd_size = sizeof(struct mtk_tx_dma_v2), + .rxd_size = sizeof(struct mtk_rx_dma_v2), + .rx_irq_done_mask = MTK_RX_DONE_INT_V2, + .rx_dma_l4_valid = RX_DMA_L4_VALID_V2, + .dma_max_len = MTK_TX_DMA_BUF_LEN_V2, + .dma_len_offset = 8, + }, +}; + static const struct mtk_soc_data mt7986_data = { .reg_map = &mt7986_reg_map, .ana_rgc3 = 0x128, @@ -4894,6 +4914,7 @@ const struct of_device_id of_mtk_match[] = { { .compatible = "mediatek,mt7622-eth", .data = &mt7622_data}, { .compatible = "mediatek,mt7623-eth", .data = &mt7623_data}, { .compatible = "mediatek,mt7629-eth", .data = &mt7629_data}, + { .compatible = "mediatek,mt7981-eth", .data = &mt7981_data}, { .compatible = "mediatek,mt7986-eth", .data = &mt7986_data}, { .compatible = "ralink,rt5350-eth", .data = &rt5350_data}, {}, diff --git a/drivers/net/ethernet/mediatek/mtk_eth_soc.h b/drivers/net/ethernet/mediatek/mtk_eth_soc.h index afc9d52e79bf..7230dcb29315 100644 --- a/drivers/net/ethernet/mediatek/mtk_eth_soc.h +++ b/drivers/net/ethernet/mediatek/mtk_eth_soc.h @@ -551,11 +551,22 @@ #define SGMSYS_QPHY_PWR_STATE_CTRL 0xe8 #define SGMII_PHYA_PWD BIT(4) +/* Register to QPHY wrapper control */ +#define SGMSYS_QPHY_WRAP_CTRL 0xec +#define SGMII_PN_SWAP_MASK GENMASK(1, 0) +#define SGMII_PN_SWAP_TX_RX (BIT(0) | BIT(1)) +#define MTK_SGMII_FLAG_PN_SWAP BIT(0) + /* Infrasys subsystem config registers */ #define INFRA_MISC2 0x70c #define CO_QPHY_SEL BIT(0) #define GEPHY_MAC_SEL BIT(1) +/* Top misc registers */ +#define USB_PHY_SWITCH_REG 0x218 +#define QPHY_SEL_MASK GENMASK(1, 0) +#define SGMII_QPHY_SEL 0x2 + /* MT7628/88 specific stuff */ #define MT7628_PDMA_OFFSET 0x0800 #define MT7628_SDM_OFFSET 0x0c00 @@ -736,6 +747,17 @@ enum mtk_clks_map { BIT(MTK_CLK_SGMII2_CDR_FB) | \ BIT(MTK_CLK_SGMII_CK) | \ BIT(MTK_CLK_ETH2PLL) | BIT(MTK_CLK_SGMIITOP)) +#define MT7981_CLKS_BITMAP (BIT(MTK_CLK_FE) | BIT(MTK_CLK_GP2) | BIT(MTK_CLK_GP1) | \ + BIT(MTK_CLK_WOCPU0) | \ + BIT(MTK_CLK_SGMII_TX_250M) | \ + BIT(MTK_CLK_SGMII_RX_250M) | \ + BIT(MTK_CLK_SGMII_CDR_REF) | \ + BIT(MTK_CLK_SGMII_CDR_FB) | \ + BIT(MTK_CLK_SGMII2_TX_250M) | \ + BIT(MTK_CLK_SGMII2_RX_250M) | \ + BIT(MTK_CLK_SGMII2_CDR_REF) | \ + BIT(MTK_CLK_SGMII2_CDR_FB) | \ + BIT(MTK_CLK_SGMII_CK)) #define MT7986_CLKS_BITMAP (BIT(MTK_CLK_FE) | BIT(MTK_CLK_GP2) | BIT(MTK_CLK_GP1) | \ BIT(MTK_CLK_WOCPU1) | BIT(MTK_CLK_WOCPU0) | \ BIT(MTK_CLK_SGMII_TX_250M) | \ @@ -849,6 +871,7 @@ enum mkt_eth_capabilities { MTK_NETSYS_V2_BIT, MTK_SOC_MT7628_BIT, MTK_RSTCTRL_PPE1_BIT, + MTK_U3_COPHY_V2_BIT, /* MUX BITS*/ MTK_ETH_MUX_GDM1_TO_GMAC1_ESW_BIT, @@ -883,6 +906,7 @@ enum mkt_eth_capabilities { #define MTK_NETSYS_V2 BIT(MTK_NETSYS_V2_BIT) #define MTK_SOC_MT7628 BIT(MTK_SOC_MT7628_BIT) #define MTK_RSTCTRL_PPE1 BIT(MTK_RSTCTRL_PPE1_BIT) +#define MTK_U3_COPHY_V2 BIT(MTK_U3_COPHY_V2_BIT) #define MTK_ETH_MUX_GDM1_TO_GMAC1_ESW \ BIT(MTK_ETH_MUX_GDM1_TO_GMAC1_ESW_BIT) @@ -955,6 +979,11 @@ enum mkt_eth_capabilities { MTK_MUX_U3_GMAC2_TO_QPHY | \ MTK_MUX_GMAC12_TO_GEPHY_SGMII | MTK_QDMA) +#define MT7981_CAPS (MTK_GMAC1_SGMII | MTK_GMAC2_SGMII | MTK_GMAC2_GEPHY | \ + MTK_MUX_GMAC12_TO_GEPHY_SGMII | MTK_QDMA | \ + MTK_MUX_U3_GMAC2_TO_QPHY | MTK_U3_COPHY_V2 | \ + MTK_NETSYS_V2 | MTK_RSTCTRL_PPE1) + #define MT7986_CAPS (MTK_GMAC1_SGMII | MTK_GMAC2_SGMII | \ MTK_MUX_GMAC12_TO_GEPHY_SGMII | MTK_QDMA | \ MTK_NETSYS_V2 | MTK_RSTCTRL_PPE1) @@ -1068,12 +1097,14 @@ struct mtk_soc_data { * @ana_rgc3: The offset refers to register ANA_RGC3 related to regmap * @interface: Currently configured interface mode * @pcs: Phylink PCS structure + * @flags: Flags indicating hardware properties */ struct mtk_pcs { struct regmap *regmap; u32 ana_rgc3; phy_interface_t interface; struct phylink_pcs pcs; + u32 flags; }; /* struct mtk_sgmii - This is the structure holding sgmii regmap and its diff --git a/drivers/net/ethernet/mediatek/mtk_sgmii.c b/drivers/net/ethernet/mediatek/mtk_sgmii.c index bb00de1003ac..0fe403db23c9 100644 --- a/drivers/net/ethernet/mediatek/mtk_sgmii.c +++ b/drivers/net/ethernet/mediatek/mtk_sgmii.c @@ -88,6 +88,11 @@ static int mtk_pcs_config(struct phylink_pcs *pcs, unsigned int mode, regmap_update_bits(mpcs->regmap, SGMSYS_QPHY_PWR_STATE_CTRL, SGMII_PHYA_PWD, SGMII_PHYA_PWD); + if (mpcs->flags & MTK_SGMII_FLAG_PN_SWAP) + regmap_update_bits(mpcs->regmap, SGMSYS_QPHY_WRAP_CTRL, + SGMII_PN_SWAP_MASK, + SGMII_PN_SWAP_TX_RX); + if (interface == PHY_INTERFACE_MODE_2500BASEX) rgc3 = RG_PHY_SPEED_3_125G; else @@ -182,6 +187,11 @@ int mtk_sgmii_init(struct mtk_sgmii *ss, struct device_node *r, u32 ana_rgc3) ss->pcs[i].ana_rgc3 = ana_rgc3; ss->pcs[i].regmap = syscon_node_to_regmap(np); + + ss->pcs[i].flags = 0; + if (of_property_read_bool(np, "mediatek,pn_swap")) + ss->pcs[i].flags |= MTK_SGMII_FLAG_PN_SWAP; + of_node_put(np); if (IS_ERR(ss->pcs[i].regmap)) return PTR_ERR(ss->pcs[i].regmap); From patchwork Fri Feb 3 07:01:01 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Daniel Golle X-Patchwork-Id: 13127060 X-Patchwork-Delegate: kuba@kernel.org Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 477D2C636CC for ; Fri, 3 Feb 2023 07:03:27 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S232138AbjBCHDZ (ORCPT ); Fri, 3 Feb 2023 02:03:25 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:54342 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231716AbjBCHDW (ORCPT ); Fri, 3 Feb 2023 02:03:22 -0500 Received: from fudo.makrotopia.org (fudo.makrotopia.org [IPv6:2a07:2ec0:3002::71]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 6296A8F25C; Thu, 2 Feb 2023 23:02:44 -0800 (PST) Received: from local by fudo.makrotopia.org with esmtpsa (TLS1.3:TLS_AES_256_GCM_SHA384:256) (Exim 4.96) (envelope-from ) id 1pNq5p-0000oD-2W; Fri, 03 Feb 2023 08:02:41 +0100 Date: Fri, 3 Feb 2023 07:01:01 +0000 From: Daniel Golle To: netdev@vger.kernel.org, linux-mediatek@lists.infradead.org, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, Russell King , Heiner Kallweit , Lorenzo Bianconi , Mark Lee , John Crispin , Felix Fietkau , AngeloGioacchino Del Regno , Matthias Brugger , DENG Qingfang , Landen Chao , Sean Wang , Paolo Abeni , Jakub Kicinski , Eric Dumazet , "David S. Miller" , Vladimir Oltean , Florian Fainelli , Andrew Lunn Cc: Jianhui Zhao , =?iso-8859-1?q?Bj=F8rn?= Mork Subject: [PATCH 2/9] net: ethernet: mtk_eth_soc: set MDIO bus clock frequency Message-ID: References: MIME-Version: 1.0 Content-Disposition: inline In-Reply-To: Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org X-Patchwork-Delegate: kuba@kernel.org Set MDIO bus clock frequency and allow setting a custom maximum frequency from device tree. Signed-off-by: Daniel Golle --- drivers/net/ethernet/mediatek/mtk_eth_soc.c | 25 +++++++++++++++++++++ drivers/net/ethernet/mediatek/mtk_eth_soc.h | 5 +++++ 2 files changed, 30 insertions(+) diff --git a/drivers/net/ethernet/mediatek/mtk_eth_soc.c b/drivers/net/ethernet/mediatek/mtk_eth_soc.c index a44ffff48c7b..9050423821dc 100644 --- a/drivers/net/ethernet/mediatek/mtk_eth_soc.c +++ b/drivers/net/ethernet/mediatek/mtk_eth_soc.c @@ -790,7 +790,9 @@ static const struct phylink_mac_ops mtk_phylink_ops = { static int mtk_mdio_init(struct mtk_eth *eth) { struct device_node *mii_np; + int clk = 25000000, max_clk = 2500000, divider = 1; int ret; + u32 val; mii_np = of_get_child_by_name(eth->dev->of_node, "mdio-bus"); if (!mii_np) { @@ -818,6 +820,29 @@ static int mtk_mdio_init(struct mtk_eth *eth) eth->mii_bus->parent = eth->dev; snprintf(eth->mii_bus->id, MII_BUS_ID_SIZE, "%pOFn", mii_np); + + if (!of_property_read_u32(mii_np, "clock-frequency", &val)) + max_clk = val; + + while (clk / divider > max_clk) { + if (divider >= 63) + break; + + divider++; + }; + + val = mtk_r32(eth, MTK_PPSC); + val |= PPSC_MDC_TURBO; + mtk_w32(eth, val, MTK_PPSC); + + /* Configure MDC Divider */ + val = mtk_r32(eth, MTK_PPSC); + val &= ~PPSC_MDC_CFG; + val |= FIELD_PREP(PPSC_MDC_CFG, divider); + mtk_w32(eth, val, MTK_PPSC); + + dev_dbg(eth->dev, "MDC is running on %d Hz\n", clk / divider); + ret = of_mdiobus_register(eth->mii_bus, mii_np); err_put_node: diff --git a/drivers/net/ethernet/mediatek/mtk_eth_soc.h b/drivers/net/ethernet/mediatek/mtk_eth_soc.h index 7230dcb29315..724815ae18a0 100644 --- a/drivers/net/ethernet/mediatek/mtk_eth_soc.h +++ b/drivers/net/ethernet/mediatek/mtk_eth_soc.h @@ -363,6 +363,11 @@ #define RX_DMA_VTAG_V2 BIT(0) #define RX_DMA_L4_VALID_V2 BIT(2) +/* PHY Polling and SMI Master Control registers */ +#define MTK_PPSC 0x10000 +#define PPSC_MDC_CFG GENMASK(29, 24) +#define PPSC_MDC_TURBO BIT(20) + /* PHY Indirect Access Control registers */ #define MTK_PHY_IAC 0x10004 #define PHY_IAC_ACCESS BIT(31) From patchwork Fri Feb 3 07:01:28 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Daniel Golle X-Patchwork-Id: 13127061 X-Patchwork-Delegate: kuba@kernel.org Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 5DAFEC636D7 for ; Fri, 3 Feb 2023 07:03:33 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S232168AbjBCHDc (ORCPT ); Fri, 3 Feb 2023 02:03:32 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:54458 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S232102AbjBCHD1 (ORCPT ); Fri, 3 Feb 2023 02:03:27 -0500 Received: from fudo.makrotopia.org (fudo.makrotopia.org [IPv6:2a07:2ec0:3002::71]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 1DD9220068; Thu, 2 Feb 2023 23:03:12 -0800 (PST) Received: from local by fudo.makrotopia.org with esmtpsa (TLS1.3:TLS_AES_256_GCM_SHA384:256) (Exim 4.96) (envelope-from ) id 1pNq6I-0000pB-1A; Fri, 03 Feb 2023 08:03:10 +0100 Date: Fri, 3 Feb 2023 07:01:28 +0000 From: Daniel Golle To: netdev@vger.kernel.org, linux-mediatek@lists.infradead.org, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, Russell King , Heiner Kallweit , Lorenzo Bianconi , Mark Lee , John Crispin , Felix Fietkau , AngeloGioacchino Del Regno , Matthias Brugger , DENG Qingfang , Landen Chao , Sean Wang , Paolo Abeni , Jakub Kicinski , Eric Dumazet , "David S. Miller" , Vladimir Oltean , Florian Fainelli , Andrew Lunn Cc: Jianhui Zhao , =?iso-8859-1?q?Bj=F8rn?= Mork Subject: [PATCH 3/9] net: ethernet: mtk_eth_soc: reset PCS state Message-ID: <5f07845b710e8464cd9509387f1fcdc6baeb5cb9.1675407169.git.daniel@makrotopia.org> References: MIME-Version: 1.0 Content-Disposition: inline In-Reply-To: Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org X-Patchwork-Delegate: kuba@kernel.org Reset PCS state when changing interface mode. Signed-off-by: Daniel Golle --- drivers/net/ethernet/mediatek/mtk_eth_soc.h | 4 ++++ drivers/net/ethernet/mediatek/mtk_sgmii.c | 4 ++++ 2 files changed, 8 insertions(+) diff --git a/drivers/net/ethernet/mediatek/mtk_eth_soc.h b/drivers/net/ethernet/mediatek/mtk_eth_soc.h index 724815ae18a0..d39717582a85 100644 --- a/drivers/net/ethernet/mediatek/mtk_eth_soc.h +++ b/drivers/net/ethernet/mediatek/mtk_eth_soc.h @@ -546,6 +546,10 @@ #define SGMII_SEND_AN_ERROR_EN BIT(11) #define SGMII_IF_MODE_MASK GENMASK(5, 1) +/* Register to reset SGMII design */ +#define SGMII_RESERVED_0 0x34 +#define SGMII_SW_RESET BIT(0) + /* Register to set SGMII speed, ANA RG_ Control Signals III*/ #define SGMSYS_ANA_RG_CS3 0x2028 #define RG_PHY_SPEED_MASK (BIT(2) | BIT(3)) diff --git a/drivers/net/ethernet/mediatek/mtk_sgmii.c b/drivers/net/ethernet/mediatek/mtk_sgmii.c index 0fe403db23c9..f3cf66a23e72 100644 --- a/drivers/net/ethernet/mediatek/mtk_sgmii.c +++ b/drivers/net/ethernet/mediatek/mtk_sgmii.c @@ -88,6 +88,10 @@ static int mtk_pcs_config(struct phylink_pcs *pcs, unsigned int mode, regmap_update_bits(mpcs->regmap, SGMSYS_QPHY_PWR_STATE_CTRL, SGMII_PHYA_PWD, SGMII_PHYA_PWD); + /* Reset SGMII PCS state */ + regmap_update_bits(mpcs->regmap, SGMII_RESERVED_0, + SGMII_SW_RESET, SGMII_SW_RESET); + if (mpcs->flags & MTK_SGMII_FLAG_PN_SWAP) regmap_update_bits(mpcs->regmap, SGMSYS_QPHY_WRAP_CTRL, SGMII_PN_SWAP_MASK, From patchwork Fri Feb 3 07:02:01 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Daniel Golle X-Patchwork-Id: 13127070 X-Patchwork-Delegate: kuba@kernel.org Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id CBD18C61DA4 for ; Fri, 3 Feb 2023 07:04:23 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231716AbjBCHEW (ORCPT ); Fri, 3 Feb 2023 02:04:22 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:55570 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231579AbjBCHEV (ORCPT ); Fri, 3 Feb 2023 02:04:21 -0500 Received: from fudo.makrotopia.org (fudo.makrotopia.org [IPv6:2a07:2ec0:3002::71]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 9B0204B8A8; Thu, 2 Feb 2023 23:03:46 -0800 (PST) Received: from local by fudo.makrotopia.org with esmtpsa (TLS1.3:TLS_AES_256_GCM_SHA384:256) (Exim 4.96) (envelope-from ) id 1pNq6o-0000qD-0K; Fri, 03 Feb 2023 08:03:42 +0100 Date: Fri, 3 Feb 2023 07:02:01 +0000 From: Daniel Golle To: netdev@vger.kernel.org, linux-mediatek@lists.infradead.org, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, Russell King , Heiner Kallweit , Lorenzo Bianconi , Mark Lee , John Crispin , Felix Fietkau , AngeloGioacchino Del Regno , Matthias Brugger , DENG Qingfang , Landen Chao , Sean Wang , Paolo Abeni , Jakub Kicinski , Eric Dumazet , "David S. Miller" , Vladimir Oltean , Florian Fainelli , Andrew Lunn Cc: Jianhui Zhao , =?iso-8859-1?q?Bj=F8rn?= Mork Subject: [PATCH 4/9] net: ethernet: mtk_eth_soc: only write values if needed Message-ID: References: MIME-Version: 1.0 Content-Disposition: inline In-Reply-To: Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org X-Patchwork-Delegate: kuba@kernel.org Only restart auto-negotiation and write link timer if actually necessary. Signed-off-by: Daniel Golle --- drivers/net/ethernet/mediatek/mtk_sgmii.c | 24 +++++++++++------------ 1 file changed, 12 insertions(+), 12 deletions(-) diff --git a/drivers/net/ethernet/mediatek/mtk_sgmii.c b/drivers/net/ethernet/mediatek/mtk_sgmii.c index f3cf66a23e72..58b5f2f70a66 100644 --- a/drivers/net/ethernet/mediatek/mtk_sgmii.c +++ b/drivers/net/ethernet/mediatek/mtk_sgmii.c @@ -41,17 +41,13 @@ static int mtk_pcs_config(struct phylink_pcs *pcs, unsigned int mode, struct mtk_pcs *mpcs = pcs_to_mtk_pcs(pcs); unsigned int rgc3, sgm_mode, bmcr; int advertise, link_timer; - bool changed, use_an; + bool mode_changed = false, changed, use_an; advertise = phylink_mii_c22_pcs_encode_advertisement(interface, advertising); if (advertise < 0) return advertise; - link_timer = phylink_get_link_timer_ns(interface); - if (link_timer < 0) - return link_timer; - /* Clearing IF_MODE_BIT0 switches the PCS to BASE-X mode, and * we assume that fixes it's speed at bitrate = line rate (in * other words, 1000Mbps or 2500Mbps). @@ -77,8 +73,7 @@ static int mtk_pcs_config(struct phylink_pcs *pcs, unsigned int mode, } if (use_an) { - /* FIXME: Do we need to set AN_RESTART here? */ - bmcr = SGMII_AN_RESTART | SGMII_AN_ENABLE; + bmcr = SGMII_AN_ENABLE; } else { bmcr = 0; } @@ -106,16 +101,21 @@ static int mtk_pcs_config(struct phylink_pcs *pcs, unsigned int mode, regmap_update_bits(mpcs->regmap, mpcs->ana_rgc3, RG_PHY_SPEED_3_125G, rgc3); + /* Setup the link timer and QPHY power up inside SGMIISYS */ + link_timer = phylink_get_link_timer_ns(interface); + if (link_timer < 0) + return link_timer; + + regmap_write(mpcs->regmap, SGMSYS_PCS_LINK_TIMER, link_timer / 2 / 8); + mpcs->interface = interface; + mode_changed = true; } /* Update the advertisement, noting whether it has changed */ regmap_update_bits_check(mpcs->regmap, SGMSYS_PCS_ADVERTISE, SGMII_ADVERTISE, advertise, &changed); - /* Setup the link timer and QPHY power up inside SGMIISYS */ - regmap_write(mpcs->regmap, SGMSYS_PCS_LINK_TIMER, link_timer / 2 / 8); - /* Update the sgmsys mode register */ regmap_update_bits(mpcs->regmap, SGMSYS_SGMII_MODE, SGMII_REMOTE_FAULT_DIS | SGMII_SPEED_DUPLEX_AN | @@ -123,7 +123,7 @@ static int mtk_pcs_config(struct phylink_pcs *pcs, unsigned int mode, /* Update the BMCR */ regmap_update_bits(mpcs->regmap, SGMSYS_PCS_CONTROL_1, - SGMII_AN_RESTART | SGMII_AN_ENABLE, bmcr); + SGMII_AN_ENABLE, bmcr); /* Release PHYA power down state * Only removing bit SGMII_PHYA_PWD isn't enough. @@ -137,7 +137,7 @@ static int mtk_pcs_config(struct phylink_pcs *pcs, unsigned int mode, usleep_range(50, 100); regmap_write(mpcs->regmap, SGMSYS_QPHY_PWR_STATE_CTRL, 0); - return changed; + return changed || mode_changed; } static void mtk_pcs_restart_an(struct phylink_pcs *pcs) From patchwork Fri Feb 3 07:02:28 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Daniel Golle X-Patchwork-Id: 13127071 X-Patchwork-Delegate: kuba@kernel.org Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id BABD4C636CC for ; Fri, 3 Feb 2023 07:04:43 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S232000AbjBCHEm (ORCPT ); Fri, 3 Feb 2023 02:04:42 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:55756 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231579AbjBCHEk (ORCPT ); Fri, 3 Feb 2023 02:04:40 -0500 Received: from fudo.makrotopia.org (fudo.makrotopia.org [IPv6:2a07:2ec0:3002::71]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 85A152A17A; Thu, 2 Feb 2023 23:04:10 -0800 (PST) Received: from local by fudo.makrotopia.org with esmtpsa (TLS1.3:TLS_AES_256_GCM_SHA384:256) (Exim 4.96) (envelope-from ) id 1pNq7E-0000rX-35; Fri, 03 Feb 2023 08:04:09 +0100 Date: Fri, 3 Feb 2023 07:02:28 +0000 From: Daniel Golle To: netdev@vger.kernel.org, linux-mediatek@lists.infradead.org, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, Russell King , Heiner Kallweit , Lorenzo Bianconi , Mark Lee , John Crispin , Felix Fietkau , AngeloGioacchino Del Regno , Matthias Brugger , DENG Qingfang , Landen Chao , Sean Wang , Paolo Abeni , Jakub Kicinski , Eric Dumazet , "David S. Miller" , Vladimir Oltean , Florian Fainelli , Andrew Lunn Cc: Jianhui Zhao , =?iso-8859-1?q?Bj=F8rn?= Mork Subject: [PATCH 5/9] net: ethernet: mtk_eth_soc: fix RX data corruption issue Message-ID: <96c628df0991104d255e6d4696988686387bc2ef.1675407169.git.daniel@makrotopia.org> References: MIME-Version: 1.0 Content-Disposition: inline In-Reply-To: Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org X-Patchwork-Delegate: kuba@kernel.org Also set bit 12 when setting up MAC MCR, as MediaTek SDK did the same change stating: "If without this patch, kernel might receive invalid packets that are corrupted by GMAC."[1] [1]: https://git01.mediatek.com/plugins/gitiles/openwrt/feeds/mtk-openwrt-feeds/+/d8a2975939a12686c4a95c40db21efdc3f821f63 Signed-off-by: Daniel Golle --- drivers/net/ethernet/mediatek/mtk_eth_soc.c | 2 +- drivers/net/ethernet/mediatek/mtk_eth_soc.h | 1 + 2 files changed, 2 insertions(+), 1 deletion(-) diff --git a/drivers/net/ethernet/mediatek/mtk_eth_soc.c b/drivers/net/ethernet/mediatek/mtk_eth_soc.c index 9050423821dc..f09cd6a132c9 100644 --- a/drivers/net/ethernet/mediatek/mtk_eth_soc.c +++ b/drivers/net/ethernet/mediatek/mtk_eth_soc.c @@ -615,7 +615,7 @@ static int mtk_mac_finish(struct phylink_config *config, unsigned int mode, /* Setup gmac */ mcr_cur = mtk_r32(mac->hw, MTK_MAC_MCR(mac->id)); mcr_new = mcr_cur; - mcr_new |= MAC_MCR_IPG_CFG | MAC_MCR_FORCE_MODE | + mcr_new |= MAC_MCR_IPG_CFG | MAC_MCR_BIT_12 | MAC_MCR_FORCE_MODE | MAC_MCR_BACKOFF_EN | MAC_MCR_BACKPR_EN | MAC_MCR_FORCE_LINK; /* Only update control register when needed! */ diff --git a/drivers/net/ethernet/mediatek/mtk_eth_soc.h b/drivers/net/ethernet/mediatek/mtk_eth_soc.h index d39717582a85..20d8ea20f164 100644 --- a/drivers/net/ethernet/mediatek/mtk_eth_soc.h +++ b/drivers/net/ethernet/mediatek/mtk_eth_soc.h @@ -402,6 +402,7 @@ #define MAC_MCR_FORCE_MODE BIT(15) #define MAC_MCR_TX_EN BIT(14) #define MAC_MCR_RX_EN BIT(13) +#define MAC_MCR_BIT_12 BIT(12) #define MAC_MCR_BACKOFF_EN BIT(9) #define MAC_MCR_BACKPR_EN BIT(8) #define MAC_MCR_FORCE_RX_FC BIT(5) From patchwork Fri Feb 3 07:05:08 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Daniel Golle X-Patchwork-Id: 13127072 X-Patchwork-Delegate: kuba@kernel.org Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 2A2BCC636CC for ; Fri, 3 Feb 2023 07:06:58 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S232084AbjBCHG5 (ORCPT ); Fri, 3 Feb 2023 02:06:57 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:57920 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229837AbjBCHG4 (ORCPT ); Fri, 3 Feb 2023 02:06:56 -0500 Received: from fudo.makrotopia.org (fudo.makrotopia.org [IPv6:2a07:2ec0:3002::71]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 4B7FD206B7; Thu, 2 Feb 2023 23:06:54 -0800 (PST) Received: from local by fudo.makrotopia.org with esmtpsa (TLS1.3:TLS_AES_256_GCM_SHA384:256) (Exim 4.96) (envelope-from ) id 1pNq9p-0000t1-2y; Fri, 03 Feb 2023 08:06:50 +0100 Date: Fri, 3 Feb 2023 07:05:08 +0000 From: Daniel Golle To: netdev@vger.kernel.org, linux-mediatek@lists.infradead.org, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, Russell King , Heiner Kallweit , Lorenzo Bianconi , Mark Lee , John Crispin , Felix Fietkau , AngeloGioacchino Del Regno , Matthias Brugger , DENG Qingfang , Landen Chao , Sean Wang , Paolo Abeni , Jakub Kicinski , Eric Dumazet , "David S. Miller" , Vladimir Oltean , Florian Fainelli , Andrew Lunn Cc: Jianhui Zhao , =?iso-8859-1?q?Bj=F8rn?= Mork Subject: [PATCH 6/9] net: ethernet: mtk_eth_soc: ppe: add support for flow accounting Message-ID: <7ce673e90b72e1a19b7657bebc2ca8d1ea596f96.1675407169.git.daniel@makrotopia.org> References: MIME-Version: 1.0 Content-Disposition: inline In-Reply-To: Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org X-Patchwork-Delegate: kuba@kernel.org The PPE units found in MT7622 and newer support packet and byte accounting of hw-offloaded flows. Add support for reading those counters as found in MediaTek's SDK[1], make them accessible via debugfs and add them to the flow offload stats. [1]: https://git01.mediatek.com/plugins/gitiles/openwrt/feeds/mtk-openwrt-feeds/+/bc6a6a375c800dc2b80e1a325a2c732d1737df92 Signed-off-by: Daniel Golle --- drivers/net/ethernet/mediatek/mtk_eth_soc.c | 8 +- drivers/net/ethernet/mediatek/mtk_eth_soc.h | 1 + drivers/net/ethernet/mediatek/mtk_ppe.c | 110 +++++++++++++++++- drivers/net/ethernet/mediatek/mtk_ppe.h | 24 +++- .../net/ethernet/mediatek/mtk_ppe_debugfs.c | 9 +- .../net/ethernet/mediatek/mtk_ppe_offload.c | 7 ++ drivers/net/ethernet/mediatek/mtk_ppe_regs.h | 14 +++ 7 files changed, 168 insertions(+), 5 deletions(-) diff --git a/drivers/net/ethernet/mediatek/mtk_eth_soc.c b/drivers/net/ethernet/mediatek/mtk_eth_soc.c index f09cd6a132c9..d50dea1f20f3 100644 --- a/drivers/net/ethernet/mediatek/mtk_eth_soc.c +++ b/drivers/net/ethernet/mediatek/mtk_eth_soc.c @@ -4708,7 +4708,9 @@ static int mtk_probe(struct platform_device *pdev) u32 ppe_addr = eth->soc->reg_map->ppe_base + i * 0x400; eth->ppe[i] = mtk_ppe_init(eth, eth->base + ppe_addr, - eth->soc->offload_version, i); + eth->soc->offload_version, i, + eth->soc->has_accounting); + if (!eth->ppe[i]) { err = -ENOMEM; goto err_deinit_ppe; @@ -4830,6 +4832,7 @@ static const struct mtk_soc_data mt7622_data = { .required_pctl = false, .offload_version = 2, .hash_offset = 2, + .has_accounting = true, .foe_entry_size = sizeof(struct mtk_foe_entry) - 16, .txrx = { .txd_size = sizeof(struct mtk_tx_dma), @@ -4867,6 +4870,7 @@ static const struct mtk_soc_data mt7629_data = { .hw_features = MTK_HW_FEATURES, .required_clks = MT7629_CLKS_BITMAP, .required_pctl = false, + .has_accounting = true, .txrx = { .txd_size = sizeof(struct mtk_tx_dma), .rxd_size = sizeof(struct mtk_rx_dma), @@ -4887,6 +4891,7 @@ static const struct mtk_soc_data mt7981_data = { .offload_version = 2, .hash_offset = 4, .foe_entry_size = sizeof(struct mtk_foe_entry), + .has_accounting = true, .txrx = { .txd_size = sizeof(struct mtk_tx_dma_v2), .rxd_size = sizeof(struct mtk_rx_dma_v2), @@ -4907,6 +4912,7 @@ static const struct mtk_soc_data mt7986_data = { .offload_version = 2, .hash_offset = 4, .foe_entry_size = sizeof(struct mtk_foe_entry), + .has_accounting = true, .txrx = { .txd_size = sizeof(struct mtk_tx_dma_v2), .rxd_size = sizeof(struct mtk_rx_dma_v2), diff --git a/drivers/net/ethernet/mediatek/mtk_eth_soc.h b/drivers/net/ethernet/mediatek/mtk_eth_soc.h index 20d8ea20f164..982482712e0a 100644 --- a/drivers/net/ethernet/mediatek/mtk_eth_soc.h +++ b/drivers/net/ethernet/mediatek/mtk_eth_soc.h @@ -1085,6 +1085,7 @@ struct mtk_soc_data { u8 hash_offset; u16 foe_entry_size; netdev_features_t hw_features; + bool has_accounting; struct { u32 txd_size; u32 rxd_size; diff --git a/drivers/net/ethernet/mediatek/mtk_ppe.c b/drivers/net/ethernet/mediatek/mtk_ppe.c index 6883eb34cd8b..26fa89afc69a 100644 --- a/drivers/net/ethernet/mediatek/mtk_ppe.c +++ b/drivers/net/ethernet/mediatek/mtk_ppe.c @@ -74,6 +74,46 @@ static int mtk_ppe_wait_busy(struct mtk_ppe *ppe) return ret; } +static int mtk_ppe_mib_wait_busy(struct mtk_ppe *ppe) +{ + int ret; + u32 val; + + ret = readl_poll_timeout(ppe->base + MTK_PPE_MIB_SER_CR, val, + !(val & MTK_PPE_MIB_SER_CR_ST), + 20, MTK_PPE_WAIT_TIMEOUT_US); + + if (ret) + dev_err(ppe->dev, "MIB table busy"); + + return ret; +} + +static int mtk_mib_entry_read(struct mtk_ppe *ppe, u16 index, u64 *bytes, u64 *packets) +{ + u32 val, cnt_r0, cnt_r1, cnt_r2; + u32 byte_cnt_low, byte_cnt_high, pkt_cnt_low, pkt_cnt_high; + + val = FIELD_PREP(MTK_PPE_MIB_SER_CR_ADDR, index) | MTK_PPE_MIB_SER_CR_ST; + ppe_w32(ppe, MTK_PPE_MIB_SER_CR, val); + + if (mtk_ppe_mib_wait_busy(ppe)) + return -ETIMEDOUT; + + cnt_r0 = readl(ppe->base + MTK_PPE_MIB_SER_R0); + cnt_r1 = readl(ppe->base + MTK_PPE_MIB_SER_R1); + cnt_r2 = readl(ppe->base + MTK_PPE_MIB_SER_R2); + + byte_cnt_low = FIELD_GET(MTK_PPE_MIB_SER_R0_BYTE_CNT_LOW, cnt_r0); + byte_cnt_high = FIELD_GET(MTK_PPE_MIB_SER_R1_BYTE_CNT_HIGH, cnt_r1); + pkt_cnt_low = FIELD_GET(MTK_PPE_MIB_SER_R1_PKT_CNT_LOW, cnt_r1); + pkt_cnt_high = FIELD_GET(MTK_PPE_MIB_SER_R2_PKT_CNT_HIGH, cnt_r2); + *bytes = ((u64)byte_cnt_high << 32) | byte_cnt_low; + *packets = (pkt_cnt_high << 16) | pkt_cnt_low; + + return 0; +} + static void mtk_ppe_cache_clear(struct mtk_ppe *ppe) { ppe_set(ppe, MTK_PPE_CACHE_CTL, MTK_PPE_CACHE_CTL_CLEAR); @@ -458,6 +498,13 @@ __mtk_foe_entry_clear(struct mtk_ppe *ppe, struct mtk_flow_entry *entry) hwe->ib1 &= ~MTK_FOE_IB1_STATE; hwe->ib1 |= FIELD_PREP(MTK_FOE_IB1_STATE, MTK_FOE_STATE_INVALID); dma_wmb(); + if (ppe->accounting) { + struct mtk_foe_accounting *acct; + + acct = ppe->acct_table + entry->hash * sizeof(*acct); + acct->packets = 0; + acct->bytes = 0; + } } entry->hash = 0xffff; @@ -565,6 +612,9 @@ __mtk_foe_entry_commit(struct mtk_ppe *ppe, struct mtk_foe_entry *entry, wmb(); hwe->ib1 = entry->ib1; + if (ppe->accounting) + *mtk_foe_entry_ib2(eth, hwe) |= MTK_FOE_IB2_MIB_CNT; + dma_wmb(); mtk_ppe_cache_clear(ppe); @@ -756,14 +806,42 @@ int mtk_ppe_prepare_reset(struct mtk_ppe *ppe) return mtk_ppe_wait_busy(ppe); } +struct mtk_foe_accounting *mtk_foe_entry_get_mib(struct mtk_ppe *ppe, u32 index, + struct mtk_foe_accounting *diff) +{ + struct mtk_foe_accounting *acct; + int size = sizeof(struct mtk_foe_accounting); + u64 bytes, packets; + + if (!ppe->accounting) + return NULL; + + if (mtk_mib_entry_read(ppe, index, &bytes, &packets)) + return NULL; + + acct = ppe->acct_table + index * size; + + acct->bytes += bytes; + acct->packets += packets; + + if (diff) { + diff->bytes = bytes; + diff->packets = packets; + } + + return acct; +} + struct mtk_ppe *mtk_ppe_init(struct mtk_eth *eth, void __iomem *base, - int version, int index) + int version, int index, bool accounting) { const struct mtk_soc_data *soc = eth->soc; struct device *dev = eth->dev; struct mtk_ppe *ppe; u32 foe_flow_size; void *foe; + struct mtk_mib_entry *mib; + struct mtk_foe_accounting *acct; ppe = devm_kzalloc(dev, sizeof(*ppe), GFP_KERNEL); if (!ppe) @@ -778,6 +856,7 @@ struct mtk_ppe *mtk_ppe_init(struct mtk_eth *eth, void __iomem *base, ppe->eth = eth; ppe->dev = dev; ppe->version = version; + ppe->accounting = accounting; foe = dmam_alloc_coherent(ppe->dev, MTK_PPE_ENTRIES * soc->foe_entry_size, @@ -793,6 +872,25 @@ struct mtk_ppe *mtk_ppe_init(struct mtk_eth *eth, void __iomem *base, if (!ppe->foe_flow) goto err_free_l2_flows; + if (accounting) { + mib = dmam_alloc_coherent(ppe->dev, MTK_PPE_ENTRIES * sizeof(*mib), + &ppe->mib_phys, GFP_KERNEL); + if (!mib) + return NULL; + + memset(mib, 0, MTK_PPE_ENTRIES * sizeof(*mib)); + + ppe->mib_table = mib; + + acct = devm_kzalloc(dev, MTK_PPE_ENTRIES * sizeof(*acct), + GFP_KERNEL); + + if (!acct) + return NULL; + + ppe->acct_table = acct; + } + mtk_ppe_debugfs_init(ppe, index); return ppe; @@ -922,6 +1020,16 @@ void mtk_ppe_start(struct mtk_ppe *ppe) ppe_w32(ppe, MTK_PPE_DEFAULT_CPU_PORT1, 0xcb777); ppe_w32(ppe, MTK_PPE_SBW_CTRL, 0x7f); } + + if (ppe->accounting && ppe->mib_phys) { + ppe_w32(ppe, MTK_PPE_MIB_TB_BASE, ppe->mib_phys); + ppe_m32(ppe, MTK_PPE_MIB_CFG, MTK_PPE_MIB_CFG_EN, + MTK_PPE_MIB_CFG_EN); + ppe_m32(ppe, MTK_PPE_MIB_CFG, MTK_PPE_MIB_CFG_RD_CLR, + MTK_PPE_MIB_CFG_RD_CLR); + ppe_m32(ppe, MTK_PPE_MIB_CACHE_CTL, MTK_PPE_MIB_CACHE_CTL_EN, + MTK_PPE_MIB_CFG_RD_CLR); + } } int mtk_ppe_stop(struct mtk_ppe *ppe) diff --git a/drivers/net/ethernet/mediatek/mtk_ppe.h b/drivers/net/ethernet/mediatek/mtk_ppe.h index 5e8bc48252b1..db43fc9762bd 100644 --- a/drivers/net/ethernet/mediatek/mtk_ppe.h +++ b/drivers/net/ethernet/mediatek/mtk_ppe.h @@ -57,6 +57,7 @@ enum { #define MTK_FOE_IB2_MULTICAST BIT(8) #define MTK_FOE_IB2_WDMA_QID2 GENMASK(13, 12) +#define MTK_FOE_IB2_MIB_CNT BIT(15) #define MTK_FOE_IB2_WDMA_DEVIDX BIT(16) #define MTK_FOE_IB2_WDMA_WINFO BIT(17) @@ -285,16 +286,34 @@ struct mtk_flow_entry { unsigned long cookie; }; +struct mtk_mib_entry { + u32 byt_cnt_l; + u16 byt_cnt_h; + u32 pkt_cnt_l; + u8 pkt_cnt_h; + u8 _rsv0; + u32 _rsv1; +} __packed; + +struct mtk_foe_accounting { + u64 bytes; + u64 packets; +}; + struct mtk_ppe { struct mtk_eth *eth; struct device *dev; void __iomem *base; int version; char dirname[5]; + bool accounting; void *foe_table; dma_addr_t foe_phys; + struct mtk_mib_entry *mib_table; + dma_addr_t mib_phys; + u16 foe_check_time[MTK_PPE_ENTRIES]; struct hlist_head *foe_flow; @@ -304,7 +323,8 @@ struct mtk_ppe { }; struct mtk_ppe *mtk_ppe_init(struct mtk_eth *eth, void __iomem *base, - int version, int index); + int version, int index, bool accounting); + void mtk_ppe_deinit(struct mtk_eth *eth); void mtk_ppe_start(struct mtk_ppe *ppe); int mtk_ppe_stop(struct mtk_ppe *ppe); @@ -359,5 +379,7 @@ int mtk_foe_entry_commit(struct mtk_ppe *ppe, struct mtk_flow_entry *entry); void mtk_foe_entry_clear(struct mtk_ppe *ppe, struct mtk_flow_entry *entry); int mtk_foe_entry_idle_time(struct mtk_ppe *ppe, struct mtk_flow_entry *entry); int mtk_ppe_debugfs_init(struct mtk_ppe *ppe, int index); +struct mtk_foe_accounting *mtk_foe_entry_get_mib(struct mtk_ppe *ppe, u32 index, + struct mtk_foe_accounting *diff); #endif diff --git a/drivers/net/ethernet/mediatek/mtk_ppe_debugfs.c b/drivers/net/ethernet/mediatek/mtk_ppe_debugfs.c index 391b071bcff3..39775740340b 100644 --- a/drivers/net/ethernet/mediatek/mtk_ppe_debugfs.c +++ b/drivers/net/ethernet/mediatek/mtk_ppe_debugfs.c @@ -82,6 +82,7 @@ mtk_ppe_debugfs_foe_show(struct seq_file *m, void *private, bool bind) struct mtk_foe_entry *entry = mtk_foe_get_entry(ppe, i); struct mtk_foe_mac_info *l2; struct mtk_flow_addr_info ai = {}; + struct mtk_foe_accounting *acct; unsigned char h_source[ETH_ALEN]; unsigned char h_dest[ETH_ALEN]; int type, state; @@ -95,6 +96,8 @@ mtk_ppe_debugfs_foe_show(struct seq_file *m, void *private, bool bind) if (bind && state != MTK_FOE_STATE_BIND) continue; + acct = mtk_foe_entry_get_mib(ppe, i, NULL); + type = FIELD_GET(MTK_FOE_IB1_PACKET_TYPE, entry->ib1); seq_printf(m, "%05x %s %7s", i, mtk_foe_entry_state_str(state), @@ -153,9 +156,11 @@ mtk_ppe_debugfs_foe_show(struct seq_file *m, void *private, bool bind) *((__be16 *)&h_dest[4]) = htons(l2->dest_mac_lo); seq_printf(m, " eth=%pM->%pM etype=%04x" - " vlan=%d,%d ib1=%08x ib2=%08x\n", + " vlan=%d,%d ib1=%08x ib2=%08x" + " packets=%lld bytes=%lld\n", h_source, h_dest, ntohs(l2->etype), - l2->vlan1, l2->vlan2, entry->ib1, ib2); + l2->vlan1, l2->vlan2, entry->ib1, ib2, + acct->packets, acct->bytes); } return 0; diff --git a/drivers/net/ethernet/mediatek/mtk_ppe_offload.c b/drivers/net/ethernet/mediatek/mtk_ppe_offload.c index 81afd5ee3fbf..832e11ad9a16 100644 --- a/drivers/net/ethernet/mediatek/mtk_ppe_offload.c +++ b/drivers/net/ethernet/mediatek/mtk_ppe_offload.c @@ -497,6 +497,7 @@ static int mtk_flow_offload_stats(struct mtk_eth *eth, struct flow_cls_offload *f) { struct mtk_flow_entry *entry; + struct mtk_foe_accounting diff; u32 idle; entry = rhashtable_lookup(ð->flow_table, &f->cookie, @@ -507,6 +508,12 @@ mtk_flow_offload_stats(struct mtk_eth *eth, struct flow_cls_offload *f) idle = mtk_foe_entry_idle_time(eth->ppe[entry->ppe_index], entry); f->stats.lastused = jiffies - idle * HZ; + if (entry->hash != 0xFFFF) { + mtk_foe_entry_get_mib(eth->ppe[entry->ppe_index], entry->hash, &diff); + f->stats.pkts += diff.packets; + f->stats.bytes += diff.bytes; + } + return 0; } diff --git a/drivers/net/ethernet/mediatek/mtk_ppe_regs.h b/drivers/net/ethernet/mediatek/mtk_ppe_regs.h index 0fdb983b0a88..a2e61b3eb006 100644 --- a/drivers/net/ethernet/mediatek/mtk_ppe_regs.h +++ b/drivers/net/ethernet/mediatek/mtk_ppe_regs.h @@ -149,6 +149,20 @@ enum { #define MTK_PPE_MIB_TB_BASE 0x338 +#define MTK_PPE_MIB_SER_CR 0x33C +#define MTK_PPE_MIB_SER_CR_ST BIT(16) +#define MTK_PPE_MIB_SER_CR_ADDR GENMASK(13, 0) + +#define MTK_PPE_MIB_SER_R0 0x340 +#define MTK_PPE_MIB_SER_R0_BYTE_CNT_LOW GENMASK(31, 0) + +#define MTK_PPE_MIB_SER_R1 0x344 +#define MTK_PPE_MIB_SER_R1_PKT_CNT_LOW GENMASK(31, 16) +#define MTK_PPE_MIB_SER_R1_BYTE_CNT_HIGH GENMASK(15, 0) + +#define MTK_PPE_MIB_SER_R2 0x348 +#define MTK_PPE_MIB_SER_R2_PKT_CNT_HIGH GENMASK(23, 0) + #define MTK_PPE_MIB_CACHE_CTL 0x350 #define MTK_PPE_MIB_CACHE_CTL_EN BIT(0) #define MTK_PPE_MIB_CACHE_CTL_FLUSH BIT(2) From patchwork Fri Feb 3 07:05:34 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Daniel Golle X-Patchwork-Id: 13127073 X-Patchwork-Delegate: kuba@kernel.org Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id D03DEC636CC for ; Fri, 3 Feb 2023 07:07:21 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S232258AbjBCHHU (ORCPT ); Fri, 3 Feb 2023 02:07:20 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:58058 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231614AbjBCHHT (ORCPT ); Fri, 3 Feb 2023 02:07:19 -0500 Received: from fudo.makrotopia.org (fudo.makrotopia.org [IPv6:2a07:2ec0:3002::71]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 9450D40E1; Thu, 2 Feb 2023 23:07:17 -0800 (PST) Received: from local by fudo.makrotopia.org with esmtpsa (TLS1.3:TLS_AES_256_GCM_SHA384:256) (Exim 4.96) (envelope-from ) id 1pNqAF-0000tO-2y; Fri, 03 Feb 2023 08:07:16 +0100 Date: Fri, 3 Feb 2023 07:05:34 +0000 From: Daniel Golle To: netdev@vger.kernel.org, linux-mediatek@lists.infradead.org, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, Russell King , Heiner Kallweit , Lorenzo Bianconi , Mark Lee , John Crispin , Felix Fietkau , AngeloGioacchino Del Regno , Matthias Brugger , DENG Qingfang , Landen Chao , Sean Wang , Paolo Abeni , Jakub Kicinski , Eric Dumazet , "David S. Miller" , Vladimir Oltean , Florian Fainelli , Andrew Lunn Cc: Jianhui Zhao , =?iso-8859-1?q?Bj=F8rn?= Mork Subject: [PATCH 7/9] net: pcs: add driver for MediaTek SGMII PCS Message-ID: <30f3ff512a2082ba4cf58bf6098f2ed776051976.1675407169.git.daniel@makrotopia.org> References: MIME-Version: 1.0 Content-Disposition: inline In-Reply-To: Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org X-Patchwork-Delegate: kuba@kernel.org The SGMII core found in several MediaTek SoCs is identical to what can also be found in MediaTek's MT7531 Ethernet switch IC. As this has not always been clear, both drivers developed different implementations to deal with the PCS. Add a dedicated driver, mostly by copying the code now found in the Ethernet driver. The now redundant code will be removed by a follow-up commit. Signed-off-by: Daniel Golle --- MAINTAINERS | 7 + drivers/net/pcs/Kconfig | 6 + drivers/net/pcs/Makefile | 1 + drivers/net/pcs/pcs-mtk.c | 314 ++++++++++++++++++++++++++++++++++++ include/linux/pcs/pcs-mtk.h | 13 ++ 5 files changed, 341 insertions(+) create mode 100644 drivers/net/pcs/pcs-mtk.c create mode 100644 include/linux/pcs/pcs-mtk.h diff --git a/MAINTAINERS b/MAINTAINERS index abed40db41f0..a05f0cdcad89 100644 --- a/MAINTAINERS +++ b/MAINTAINERS @@ -13000,6 +13000,13 @@ L: netdev@vger.kernel.org S: Maintained F: drivers/net/ethernet/mediatek/ +MEDIATEK ETHERNET PCS DRIVER +M: Daniel Golle +L: netdev@vger.kernel.org +S: Maintained +F: drivers/net/pcs/pcs-mtk.c +F: include/linux/pcs/pcs-mtk.h + MEDIATEK I2C CONTROLLER DRIVER M: Qii Wang L: linux-i2c@vger.kernel.org diff --git a/drivers/net/pcs/Kconfig b/drivers/net/pcs/Kconfig index 6e7e6c346a3e..cf65646656e9 100644 --- a/drivers/net/pcs/Kconfig +++ b/drivers/net/pcs/Kconfig @@ -18,6 +18,12 @@ config PCS_LYNX This module provides helpers to phylink for managing the Lynx PCS which is part of the Layerscape and QorIQ Ethernet SERDES. +config PCS_MTK + tristate + help + This module provides helpers to phylink for managing the LynxI PCS + which is part of MediaTek's SoC and Ethernet switch ICs. + config PCS_RZN1_MIIC tristate "Renesas RZ/N1 MII converter" depends on OF && (ARCH_RZN1 || COMPILE_TEST) diff --git a/drivers/net/pcs/Makefile b/drivers/net/pcs/Makefile index 4c780d8f2e98..0242d95715c0 100644 --- a/drivers/net/pcs/Makefile +++ b/drivers/net/pcs/Makefile @@ -5,5 +5,6 @@ pcs_xpcs-$(CONFIG_PCS_XPCS) := pcs-xpcs.o pcs-xpcs-nxp.o obj-$(CONFIG_PCS_XPCS) += pcs_xpcs.o obj-$(CONFIG_PCS_LYNX) += pcs-lynx.o +obj-$(CONFIG_PCS_MTK) += pcs-mtk.o obj-$(CONFIG_PCS_RZN1_MIIC) += pcs-rzn1-miic.o obj-$(CONFIG_PCS_ALTERA_TSE) += pcs-altera-tse.o diff --git a/drivers/net/pcs/pcs-mtk.c b/drivers/net/pcs/pcs-mtk.c new file mode 100644 index 000000000000..b4236df10815 --- /dev/null +++ b/drivers/net/pcs/pcs-mtk.c @@ -0,0 +1,314 @@ +// SPDX-License-Identifier: GPL-2.0 +// Copyright (c) 2018-2019 MediaTek Inc. +/* A library for MediaTek SGMII circuit + * + * Author: Sean Wang + * Author: Daniel Golle + * + */ +#include +#include +#include +#include +#include +#include + +/* SGMII subsystem config registers */ +/* BMCR (low 16) BMSR (high 16) */ +#define SGMSYS_PCS_CONTROL_1 0x0 +#define SGMII_BMCR GENMASK(15, 0) +#define SGMII_BMSR GENMASK(31, 16) +#define SGMII_AN_RESTART BIT(9) +#define SGMII_ISOLATE BIT(10) +#define SGMII_AN_ENABLE BIT(12) +#define SGMII_LINK_STATYS BIT(18) +#define SGMII_AN_ABILITY BIT(19) +#define SGMII_AN_COMPLETE BIT(21) +#define SGMII_PCS_FAULT BIT(23) +#define SGMII_AN_EXPANSION_CLR BIT(30) + +#define SGMSYS_PCS_DEVICE_ID 0x4 +#define SGMII_LYNXI_DEV_ID 0x4d544950 + +#define SGMSYS_PCS_ADVERTISE 0x8 +#define SGMII_ADVERTISE GENMASK(15, 0) +#define SGMII_LPA GENMASK(31, 16) + +#define SGMSYS_PCS_SCRATCH 0x14 +#define SGMII_DEV_VERSION GENMASK(31, 16) + +/* Register to programmable link timer, the unit in 2 * 8ns */ +#define SGMSYS_PCS_LINK_TIMER 0x18 +#define SGMII_LINK_TIMER_MASK GENMASK(19, 0) +#define SGMII_LINK_TIMER_DEFAULT (0x186a0 & SGMII_LINK_TIMER_MASK) + +/* Register to control remote fault */ +#define SGMSYS_SGMII_MODE 0x20 +#define SGMII_IF_MODE_SGMII BIT(0) +#define SGMII_SPEED_DUPLEX_AN BIT(1) +#define SGMII_SPEED_MASK GENMASK(3, 2) +#define SGMII_SPEED_10 FIELD_PREP(SGMII_SPEED_MASK, 0) +#define SGMII_SPEED_100 FIELD_PREP(SGMII_SPEED_MASK, 1) +#define SGMII_SPEED_1000 FIELD_PREP(SGMII_SPEED_MASK, 2) +#define SGMII_DUPLEX_HALF BIT(4) +#define SGMII_REMOTE_FAULT_DIS BIT(8) +#define SGMII_CODE_SYNC_SET_VAL BIT(9) +#define SGMII_CODE_SYNC_SET_EN BIT(10) +#define SGMII_SEND_AN_ERROR_EN BIT(11) + +/* Register to reset SGMII design */ +#define SGMII_RESERVED_0 0x34 +#define SGMII_SW_RESET BIT(0) + +/* Register to set SGMII speed, ANA RG_ Control Signals III */ +#define SGMSYS_ANA_RG_CS3 0x2028 +#define RG_PHY_SPEED_MASK (BIT(2) | BIT(3)) +#define RG_PHY_SPEED_1_25G 0x0 +#define RG_PHY_SPEED_3_125G BIT(2) + +/* Register to power up QPHY */ +#define SGMSYS_QPHY_PWR_STATE_CTRL 0xe8 +#define SGMII_PHYA_PWD BIT(4) + +/* Register to QPHY wrapper control */ +#define SGMSYS_QPHY_WRAP_CTRL 0xec +#define SGMII_PN_SWAP_MASK GENMASK(1, 0) +#define SGMII_PN_SWAP_TX_RX (BIT(0) | BIT(1)) + +/* struct mtk_pcs - This structure holds each sgmii regmap and associated + * data + * @regmap: The register map pointing at the range used to setup + * SGMII modes + * @dev: Pointer to device owning the PCS + * @ana_rgc3: The offset refers to register ANA_RGC3 related to regmap + * @interface: Currently configured interface mode + * @pcs: Phylink PCS structure + * @flags: Flags indicating hardware properties + */ +struct mtk_pcs { + struct regmap *regmap; + struct device *dev; + u32 ana_rgc3; + phy_interface_t interface; + struct phylink_pcs pcs; + u32 flags; +}; + +static struct mtk_pcs *pcs_to_mtk_pcs(struct phylink_pcs *pcs) +{ + return container_of(pcs, struct mtk_pcs, pcs); +} + +static void mtk_pcs_get_state(struct phylink_pcs *pcs, + struct phylink_link_state *state) +{ + struct mtk_pcs *mpcs = pcs_to_mtk_pcs(pcs); + unsigned int bm, adv; + + /* Read the BMSR and LPA */ + regmap_read(mpcs->regmap, SGMSYS_PCS_CONTROL_1, &bm); + regmap_read(mpcs->regmap, SGMSYS_PCS_ADVERTISE, &adv); + + phylink_mii_c22_pcs_decode_state(state, FIELD_GET(SGMII_BMSR, bm), + FIELD_GET(SGMII_LPA, adv)); +} + +static int mtk_pcs_config(struct phylink_pcs *pcs, unsigned int mode, + phy_interface_t interface, + const unsigned long *advertising, + bool permit_pause_to_mac) +{ + struct mtk_pcs *mpcs = pcs_to_mtk_pcs(pcs); + unsigned int rgc3, sgm_mode, bmcr; + int advertise, link_timer; + bool mode_changed = false, changed, use_an; + + advertise = phylink_mii_c22_pcs_encode_advertisement(interface, + advertising); + if (advertise < 0) + return advertise; + + /* Clearing IF_MODE_BIT0 switches the PCS to BASE-X mode, and + * we assume that fixes it's speed at bitrate = line rate (in + * other words, 1000Mbps or 2500Mbps). + */ + if (interface == PHY_INTERFACE_MODE_SGMII) { + sgm_mode = SGMII_IF_MODE_SGMII; + if (phylink_autoneg_inband(mode)) { + sgm_mode |= SGMII_REMOTE_FAULT_DIS | + SGMII_SPEED_DUPLEX_AN; + use_an = true; + } else { + use_an = false; + } + } else if (phylink_autoneg_inband(mode)) { + /* 1000base-X or 2500base-X autoneg */ + sgm_mode = SGMII_REMOTE_FAULT_DIS; + use_an = linkmode_test_bit(ETHTOOL_LINK_MODE_Autoneg_BIT, + advertising); + } else { + /* 1000base-X or 2500base-X without autoneg */ + sgm_mode = 0; + use_an = false; + } + + if (use_an) + bmcr = SGMII_AN_ENABLE; + else + bmcr = 0; + + if (mpcs->interface != interface) { + /* PHYA power down */ + regmap_update_bits(mpcs->regmap, SGMSYS_QPHY_PWR_STATE_CTRL, + SGMII_PHYA_PWD, SGMII_PHYA_PWD); + + /* Reset SGMII PCS state */ + regmap_update_bits(mpcs->regmap, SGMII_RESERVED_0, + SGMII_SW_RESET, SGMII_SW_RESET); + + if (mpcs->flags & MTK_SGMII_FLAG_PN_SWAP) + regmap_update_bits(mpcs->regmap, SGMSYS_QPHY_WRAP_CTRL, + SGMII_PN_SWAP_MASK, + SGMII_PN_SWAP_TX_RX); + + if (interface == PHY_INTERFACE_MODE_2500BASEX) + rgc3 = RG_PHY_SPEED_3_125G; + else + rgc3 = 0; + + /* Configure the underlying interface speed */ + regmap_update_bits(mpcs->regmap, mpcs->ana_rgc3, + RG_PHY_SPEED_MASK, rgc3); + + /* Setup the link timer and QPHY power up inside SGMIISYS */ + link_timer = phylink_get_link_timer_ns(interface); + if (link_timer < 0) + return link_timer; + + regmap_write(mpcs->regmap, SGMSYS_PCS_LINK_TIMER, link_timer / 2 / 8); + + mpcs->interface = interface; + mode_changed = true; + } + + /* Update the advertisement, noting whether it has changed */ + regmap_update_bits_check(mpcs->regmap, SGMSYS_PCS_ADVERTISE, + SGMII_ADVERTISE, advertise, &changed); + + /* Update the sgmsys mode register */ + regmap_update_bits(mpcs->regmap, SGMSYS_SGMII_MODE, + SGMII_REMOTE_FAULT_DIS | SGMII_SPEED_DUPLEX_AN | + SGMII_IF_MODE_SGMII, sgm_mode); + + /* Update the BMCR */ + regmap_update_bits(mpcs->regmap, SGMSYS_PCS_CONTROL_1, + SGMII_AN_ENABLE, bmcr); + + /* Release PHYA power down state + * Only removing bit SGMII_PHYA_PWD isn't enough. + * There are cases when the SGMII_PHYA_PWD register contains 0x9 which + * prevents SGMII from working. The SGMII still shows link but no traffic + * can flow. Writing 0x0 to the PHYA_PWD register fix the issue. 0x0 was + * taken from a good working state of the SGMII interface. + * Unknown how much the QPHY needs but it is racy without a sleep. + * Tested on mt7622 & mt7986. + */ + usleep_range(50, 100); + regmap_write(mpcs->regmap, SGMSYS_QPHY_PWR_STATE_CTRL, 0); + + return changed || mode_changed; +} + +static void mtk_pcs_restart_an(struct phylink_pcs *pcs) +{ + struct mtk_pcs *mpcs = pcs_to_mtk_pcs(pcs); + + regmap_update_bits(mpcs->regmap, SGMSYS_PCS_CONTROL_1, + SGMII_AN_RESTART, SGMII_AN_RESTART); +} + +static void mtk_pcs_link_up(struct phylink_pcs *pcs, unsigned int mode, + phy_interface_t interface, int speed, int duplex) +{ + struct mtk_pcs *mpcs = pcs_to_mtk_pcs(pcs); + unsigned int sgm_mode; + + if (!phylink_autoneg_inband(mode)) { + /* Force the speed and duplex setting */ + if (speed == SPEED_10) + sgm_mode = SGMII_SPEED_10; + else if (speed == SPEED_100) + sgm_mode = SGMII_SPEED_100; + else + sgm_mode = SGMII_SPEED_1000; + + if (duplex != DUPLEX_FULL) + sgm_mode |= SGMII_DUPLEX_HALF; + + regmap_update_bits(mpcs->regmap, SGMSYS_SGMII_MODE, + SGMII_DUPLEX_HALF | SGMII_SPEED_MASK, + sgm_mode); + } +} + +static const struct phylink_pcs_ops mtk_pcs_ops = { + .pcs_get_state = mtk_pcs_get_state, + .pcs_config = mtk_pcs_config, + .pcs_an_restart = mtk_pcs_restart_an, + .pcs_link_up = mtk_pcs_link_up, +}; + +struct phylink_pcs *mtk_pcs_create(struct device *dev, struct regmap *regmap, + u32 ana_rgc3, u32 flags) +{ + struct mtk_pcs *mpcs; + u32 id, ver; + int ret; + + ret = regmap_read(regmap, SGMSYS_PCS_DEVICE_ID, &id); + if (ret < 0) + return NULL; + + if (id != SGMII_LYNXI_DEV_ID) { + dev_err(dev, "unknown PCS device id %08x\n", id); + return NULL; + } + + ret = regmap_read(regmap, SGMSYS_PCS_SCRATCH, &ver); + if (ret < 0) + return NULL; + + ver = FIELD_GET(SGMII_DEV_VERSION, ver); + if (ver != 0x1) { + dev_err(dev, "unknown PCS device version %04x\n", ver); + return NULL; + } + + dev_dbg(dev, "MediaTek LynxI SGMII PCS (id 0x%08x, ver 0x%04x)\n", id, + ver); + + mpcs = kzalloc(sizeof(*mpcs), GFP_KERNEL); + if (!mpcs) + return NULL; + + mpcs->dev = dev; + mpcs->ana_rgc3 = ana_rgc3; + mpcs->regmap = regmap; + mpcs->flags = flags; + mpcs->pcs.ops = &mtk_pcs_ops; + mpcs->pcs.poll = true; + mpcs->interface = PHY_INTERFACE_MODE_NA; + + return &mpcs->pcs; +} +EXPORT_SYMBOL(mtk_pcs_create); + +void mtk_pcs_destroy(struct phylink_pcs *pcs) +{ + struct mtk_pcs *mpcs = pcs_to_mtk_pcs(pcs); + + kfree(mpcs); +} +EXPORT_SYMBOL(mtk_pcs_destroy); + +MODULE_LICENSE("GPL"); diff --git a/include/linux/pcs/pcs-mtk.h b/include/linux/pcs/pcs-mtk.h new file mode 100644 index 000000000000..d75cd114b859 --- /dev/null +++ b/include/linux/pcs/pcs-mtk.h @@ -0,0 +1,13 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +#ifndef __LINUX_PCS_MTK_H +#define __LINUX_PCS_MTK_H + +#include +#include + +#define MTK_SGMII_FLAG_PN_SWAP BIT(0) +struct phylink_pcs *mtk_pcs_create(struct device *dev, struct regmap *regmap, + u32 ana_rgc3, u32 flags); +void mtk_pcs_destroy(struct phylink_pcs *pcs); + +#endif From patchwork Fri Feb 3 07:06:10 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Daniel Golle X-Patchwork-Id: 13127074 X-Patchwork-Delegate: kuba@kernel.org Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id C7AD9C636CC for ; Fri, 3 Feb 2023 07:08:23 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231598AbjBCHIV (ORCPT ); Fri, 3 Feb 2023 02:08:21 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:59492 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229837AbjBCHIV (ORCPT ); Fri, 3 Feb 2023 02:08:21 -0500 Received: from fudo.makrotopia.org (fudo.makrotopia.org [IPv6:2a07:2ec0:3002::71]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 682134B77B; Thu, 2 Feb 2023 23:07:53 -0800 (PST) Received: from local by fudo.makrotopia.org with esmtpsa (TLS1.3:TLS_AES_256_GCM_SHA384:256) (Exim 4.96) (envelope-from ) id 1pNqAp-0000uJ-0c; Fri, 03 Feb 2023 08:07:51 +0100 Date: Fri, 3 Feb 2023 07:06:10 +0000 From: Daniel Golle To: netdev@vger.kernel.org, linux-mediatek@lists.infradead.org, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, Russell King , Heiner Kallweit , Lorenzo Bianconi , Mark Lee , John Crispin , Felix Fietkau , AngeloGioacchino Del Regno , Matthias Brugger , DENG Qingfang , Landen Chao , Sean Wang , Paolo Abeni , Jakub Kicinski , Eric Dumazet , "David S. Miller" , Vladimir Oltean , Florian Fainelli , Andrew Lunn Cc: Jianhui Zhao , =?iso-8859-1?q?Bj=F8rn?= Mork Subject: [PATCH 8/9] net: ethernet: mtk_eth_soc: switch to external PCS driver Message-ID: <3bac780184867e111c3a1567d8b55658abd931da.1675407169.git.daniel@makrotopia.org> References: MIME-Version: 1.0 Content-Disposition: inline In-Reply-To: Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org X-Patchwork-Delegate: kuba@kernel.org Now that we got a PCS driver, use it and remove the now redundant PCS code and its header macros from the Ethernet driver. Signed-off-by: Daniel Golle --- drivers/net/ethernet/mediatek/Kconfig | 2 + drivers/net/ethernet/mediatek/mtk_eth_soc.c | 13 +- drivers/net/ethernet/mediatek/mtk_eth_soc.h | 80 +------- drivers/net/ethernet/mediatek/mtk_sgmii.c | 200 +++----------------- 4 files changed, 37 insertions(+), 258 deletions(-) diff --git a/drivers/net/ethernet/mediatek/Kconfig b/drivers/net/ethernet/mediatek/Kconfig index 97374fb3ee79..8f9d2f663885 100644 --- a/drivers/net/ethernet/mediatek/Kconfig +++ b/drivers/net/ethernet/mediatek/Kconfig @@ -19,6 +19,8 @@ config NET_MEDIATEK_SOC select DIMLIB select PAGE_POOL select PAGE_POOL_STATS + select PCS_MTK + select REGMAP_MMIO help This driver supports the gigabit ethernet MACs in the MediaTek SoC family. diff --git a/drivers/net/ethernet/mediatek/mtk_eth_soc.c b/drivers/net/ethernet/mediatek/mtk_eth_soc.c index d50dea1f20f3..5c833b82c93e 100644 --- a/drivers/net/ethernet/mediatek/mtk_eth_soc.c +++ b/drivers/net/ethernet/mediatek/mtk_eth_soc.c @@ -4081,6 +4081,7 @@ static int mtk_unreg_dev(struct mtk_eth *eth) static int mtk_cleanup(struct mtk_eth *eth) { + mtk_sgmii_destroy(eth->sgmii); mtk_unreg_dev(eth); mtk_free_dev(eth); cancel_work_sync(ð->pending_work); @@ -4578,6 +4579,7 @@ static int mtk_probe(struct platform_device *pdev) if (!eth->sgmii) return -ENOMEM; + eth->sgmii->dev = eth->dev; err = mtk_sgmii_init(eth->sgmii, pdev->dev.of_node, eth->soc->ana_rgc3); @@ -4590,14 +4592,17 @@ static int mtk_probe(struct platform_device *pdev) "mediatek,pctl"); if (IS_ERR(eth->pctl)) { dev_err(&pdev->dev, "no pctl regmap found\n"); - return PTR_ERR(eth->pctl); + err = PTR_ERR(eth->pctl); + goto err_destroy_sgmii; } } if (MTK_HAS_CAPS(eth->soc->caps, MTK_NETSYS_V2)) { res = platform_get_resource(pdev, IORESOURCE_MEM, 0); - if (!res) - return -EINVAL; + if (!res) { + err = -EINVAL; + goto err_destroy_sgmii; + } } if (eth->soc->offload_version) { @@ -4749,6 +4754,8 @@ static int mtk_probe(struct platform_device *pdev) return 0; +err_destroy_sgmii: + mtk_sgmii_destroy(eth->sgmii); err_deinit_ppe: mtk_ppe_deinit(eth); mtk_mdio_cleanup(eth); diff --git a/drivers/net/ethernet/mediatek/mtk_eth_soc.h b/drivers/net/ethernet/mediatek/mtk_eth_soc.h index 982482712e0a..46d76ca4ad2d 100644 --- a/drivers/net/ethernet/mediatek/mtk_eth_soc.h +++ b/drivers/net/ethernet/mediatek/mtk_eth_soc.h @@ -508,65 +508,6 @@ #define ETHSYS_DMA_AG_MAP_QDMA BIT(1) #define ETHSYS_DMA_AG_MAP_PPE BIT(2) -/* SGMII subsystem config registers */ -/* BMCR (low 16) BMSR (high 16) */ -#define SGMSYS_PCS_CONTROL_1 0x0 -#define SGMII_BMCR GENMASK(15, 0) -#define SGMII_BMSR GENMASK(31, 16) -#define SGMII_AN_RESTART BIT(9) -#define SGMII_ISOLATE BIT(10) -#define SGMII_AN_ENABLE BIT(12) -#define SGMII_LINK_STATYS BIT(18) -#define SGMII_AN_ABILITY BIT(19) -#define SGMII_AN_COMPLETE BIT(21) -#define SGMII_PCS_FAULT BIT(23) -#define SGMII_AN_EXPANSION_CLR BIT(30) - -#define SGMSYS_PCS_ADVERTISE 0x8 -#define SGMII_ADVERTISE GENMASK(15, 0) -#define SGMII_LPA GENMASK(31, 16) - -/* Register to programmable link timer, the unit in 2 * 8ns */ -#define SGMSYS_PCS_LINK_TIMER 0x18 -#define SGMII_LINK_TIMER_MASK GENMASK(19, 0) -#define SGMII_LINK_TIMER_DEFAULT (0x186a0 & SGMII_LINK_TIMER_MASK) - -/* Register to control remote fault */ -#define SGMSYS_SGMII_MODE 0x20 -#define SGMII_IF_MODE_SGMII BIT(0) -#define SGMII_SPEED_DUPLEX_AN BIT(1) -#define SGMII_SPEED_MASK GENMASK(3, 2) -#define SGMII_SPEED_10 FIELD_PREP(SGMII_SPEED_MASK, 0) -#define SGMII_SPEED_100 FIELD_PREP(SGMII_SPEED_MASK, 1) -#define SGMII_SPEED_1000 FIELD_PREP(SGMII_SPEED_MASK, 2) -#define SGMII_DUPLEX_HALF BIT(4) -#define SGMII_IF_MODE_BIT5 BIT(5) -#define SGMII_REMOTE_FAULT_DIS BIT(8) -#define SGMII_CODE_SYNC_SET_VAL BIT(9) -#define SGMII_CODE_SYNC_SET_EN BIT(10) -#define SGMII_SEND_AN_ERROR_EN BIT(11) -#define SGMII_IF_MODE_MASK GENMASK(5, 1) - -/* Register to reset SGMII design */ -#define SGMII_RESERVED_0 0x34 -#define SGMII_SW_RESET BIT(0) - -/* Register to set SGMII speed, ANA RG_ Control Signals III*/ -#define SGMSYS_ANA_RG_CS3 0x2028 -#define RG_PHY_SPEED_MASK (BIT(2) | BIT(3)) -#define RG_PHY_SPEED_1_25G 0x0 -#define RG_PHY_SPEED_3_125G BIT(2) - -/* Register to power up QPHY */ -#define SGMSYS_QPHY_PWR_STATE_CTRL 0xe8 -#define SGMII_PHYA_PWD BIT(4) - -/* Register to QPHY wrapper control */ -#define SGMSYS_QPHY_WRAP_CTRL 0xec -#define SGMII_PN_SWAP_MASK GENMASK(1, 0) -#define SGMII_PN_SWAP_TX_RX (BIT(0) | BIT(1)) -#define MTK_SGMII_FLAG_PN_SWAP BIT(0) - /* Infrasys subsystem config registers */ #define INFRA_MISC2 0x70c #define CO_QPHY_SEL BIT(0) @@ -1101,29 +1042,13 @@ struct mtk_soc_data { /* currently no SoC has more than 2 macs */ #define MTK_MAX_DEVS 2 -/* struct mtk_pcs - This structure holds each sgmii regmap and associated - * data - * @regmap: The register map pointing at the range used to setup - * SGMII modes - * @ana_rgc3: The offset refers to register ANA_RGC3 related to regmap - * @interface: Currently configured interface mode - * @pcs: Phylink PCS structure - * @flags: Flags indicating hardware properties - */ -struct mtk_pcs { - struct regmap *regmap; - u32 ana_rgc3; - phy_interface_t interface; - struct phylink_pcs pcs; - u32 flags; -}; - /* struct mtk_sgmii - This is the structure holding sgmii regmap and its * characteristics * @pcs Array of individual PCS structures */ struct mtk_sgmii { - struct mtk_pcs pcs[MTK_MAX_DEVS]; + struct phylink_pcs *pcs[MTK_MAX_DEVS]; + struct device *dev; }; /* struct mtk_eth - This is the main datasructure for holding the state @@ -1351,6 +1276,7 @@ u32 mtk_r32(struct mtk_eth *eth, unsigned reg); struct phylink_pcs *mtk_sgmii_select_pcs(struct mtk_sgmii *ss, int id); int mtk_sgmii_init(struct mtk_sgmii *ss, struct device_node *np, u32 ana_rgc3); +void mtk_sgmii_destroy(struct mtk_sgmii *ss); int mtk_gmac_sgmii_path_setup(struct mtk_eth *eth, int mac_id); int mtk_gmac_gephy_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 58b5f2f70a66..d2c320c9746b 100644 --- a/drivers/net/ethernet/mediatek/mtk_sgmii.c +++ b/drivers/net/ethernet/mediatek/mtk_sgmii.c @@ -10,199 +10,34 @@ #include #include #include +#include #include #include "mtk_eth_soc.h" -static struct mtk_pcs *pcs_to_mtk_pcs(struct phylink_pcs *pcs) -{ - return container_of(pcs, struct mtk_pcs, pcs); -} - -static void mtk_pcs_get_state(struct phylink_pcs *pcs, - struct phylink_link_state *state) -{ - struct mtk_pcs *mpcs = pcs_to_mtk_pcs(pcs); - unsigned int bm, adv; - - /* Read the BMSR and LPA */ - regmap_read(mpcs->regmap, SGMSYS_PCS_CONTROL_1, &bm); - regmap_read(mpcs->regmap, SGMSYS_PCS_ADVERTISE, &adv); - - phylink_mii_c22_pcs_decode_state(state, FIELD_GET(SGMII_BMSR, bm), - FIELD_GET(SGMII_LPA, adv)); -} - -static int mtk_pcs_config(struct phylink_pcs *pcs, unsigned int mode, - phy_interface_t interface, - const unsigned long *advertising, - bool permit_pause_to_mac) -{ - struct mtk_pcs *mpcs = pcs_to_mtk_pcs(pcs); - unsigned int rgc3, sgm_mode, bmcr; - int advertise, link_timer; - bool mode_changed = false, changed, use_an; - - advertise = phylink_mii_c22_pcs_encode_advertisement(interface, - advertising); - if (advertise < 0) - return advertise; - - /* Clearing IF_MODE_BIT0 switches the PCS to BASE-X mode, and - * we assume that fixes it's speed at bitrate = line rate (in - * other words, 1000Mbps or 2500Mbps). - */ - if (interface == PHY_INTERFACE_MODE_SGMII) { - sgm_mode = SGMII_IF_MODE_SGMII; - if (phylink_autoneg_inband(mode)) { - sgm_mode |= SGMII_REMOTE_FAULT_DIS | - SGMII_SPEED_DUPLEX_AN; - use_an = true; - } else { - use_an = false; - } - } else if (phylink_autoneg_inband(mode)) { - /* 1000base-X or 2500base-X autoneg */ - sgm_mode = SGMII_REMOTE_FAULT_DIS; - use_an = linkmode_test_bit(ETHTOOL_LINK_MODE_Autoneg_BIT, - advertising); - } else { - /* 1000base-X or 2500base-X without autoneg */ - sgm_mode = 0; - use_an = false; - } - - if (use_an) { - bmcr = SGMII_AN_ENABLE; - } else { - bmcr = 0; - } - - if (mpcs->interface != interface) { - /* PHYA power down */ - regmap_update_bits(mpcs->regmap, SGMSYS_QPHY_PWR_STATE_CTRL, - SGMII_PHYA_PWD, SGMII_PHYA_PWD); - - /* Reset SGMII PCS state */ - regmap_update_bits(mpcs->regmap, SGMII_RESERVED_0, - SGMII_SW_RESET, SGMII_SW_RESET); - - if (mpcs->flags & MTK_SGMII_FLAG_PN_SWAP) - regmap_update_bits(mpcs->regmap, SGMSYS_QPHY_WRAP_CTRL, - SGMII_PN_SWAP_MASK, - SGMII_PN_SWAP_TX_RX); - - if (interface == PHY_INTERFACE_MODE_2500BASEX) - rgc3 = RG_PHY_SPEED_3_125G; - else - rgc3 = 0; - - /* Configure the underlying interface speed */ - regmap_update_bits(mpcs->regmap, mpcs->ana_rgc3, - RG_PHY_SPEED_3_125G, rgc3); - - /* Setup the link timer and QPHY power up inside SGMIISYS */ - link_timer = phylink_get_link_timer_ns(interface); - if (link_timer < 0) - return link_timer; - - regmap_write(mpcs->regmap, SGMSYS_PCS_LINK_TIMER, link_timer / 2 / 8); - - mpcs->interface = interface; - mode_changed = true; - } - - /* Update the advertisement, noting whether it has changed */ - regmap_update_bits_check(mpcs->regmap, SGMSYS_PCS_ADVERTISE, - SGMII_ADVERTISE, advertise, &changed); - - /* Update the sgmsys mode register */ - regmap_update_bits(mpcs->regmap, SGMSYS_SGMII_MODE, - SGMII_REMOTE_FAULT_DIS | SGMII_SPEED_DUPLEX_AN | - SGMII_IF_MODE_SGMII, sgm_mode); - - /* Update the BMCR */ - regmap_update_bits(mpcs->regmap, SGMSYS_PCS_CONTROL_1, - SGMII_AN_ENABLE, bmcr); - - /* Release PHYA power down state - * Only removing bit SGMII_PHYA_PWD isn't enough. - * There are cases when the SGMII_PHYA_PWD register contains 0x9 which - * prevents SGMII from working. The SGMII still shows link but no traffic - * can flow. Writing 0x0 to the PHYA_PWD register fix the issue. 0x0 was - * taken from a good working state of the SGMII interface. - * Unknown how much the QPHY needs but it is racy without a sleep. - * Tested on mt7622 & mt7986. - */ - usleep_range(50, 100); - regmap_write(mpcs->regmap, SGMSYS_QPHY_PWR_STATE_CTRL, 0); - - return changed || mode_changed; -} - -static void mtk_pcs_restart_an(struct phylink_pcs *pcs) -{ - struct mtk_pcs *mpcs = pcs_to_mtk_pcs(pcs); - - regmap_update_bits(mpcs->regmap, SGMSYS_PCS_CONTROL_1, - SGMII_AN_RESTART, SGMII_AN_RESTART); -} - -static void mtk_pcs_link_up(struct phylink_pcs *pcs, unsigned int mode, - phy_interface_t interface, int speed, int duplex) -{ - struct mtk_pcs *mpcs = pcs_to_mtk_pcs(pcs); - unsigned int sgm_mode; - - if (!phylink_autoneg_inband(mode)) { - /* Force the speed and duplex setting */ - if (speed == SPEED_10) - sgm_mode = SGMII_SPEED_10; - else if (speed == SPEED_100) - sgm_mode = SGMII_SPEED_100; - else - sgm_mode = SGMII_SPEED_1000; - - if (duplex != DUPLEX_FULL) - sgm_mode |= SGMII_DUPLEX_HALF; - - regmap_update_bits(mpcs->regmap, SGMSYS_SGMII_MODE, - SGMII_DUPLEX_HALF | SGMII_SPEED_MASK, - sgm_mode); - } -} - -static const struct phylink_pcs_ops mtk_pcs_ops = { - .pcs_get_state = mtk_pcs_get_state, - .pcs_config = mtk_pcs_config, - .pcs_an_restart = mtk_pcs_restart_an, - .pcs_link_up = mtk_pcs_link_up, -}; - int mtk_sgmii_init(struct mtk_sgmii *ss, struct device_node *r, u32 ana_rgc3) { struct device_node *np; int i; + u32 flags; + struct regmap *regmap; for (i = 0; i < MTK_MAX_DEVS; i++) { np = of_parse_phandle(r, "mediatek,sgmiisys", i); if (!np) break; - ss->pcs[i].ana_rgc3 = ana_rgc3; - ss->pcs[i].regmap = syscon_node_to_regmap(np); - - ss->pcs[i].flags = 0; + flags = 0; if (of_property_read_bool(np, "pn_swap")) - ss->pcs[i].flags |= MTK_SGMII_FLAG_PN_SWAP; + flags |= MTK_SGMII_FLAG_PN_SWAP; of_node_put(np); - if (IS_ERR(ss->pcs[i].regmap)) - return PTR_ERR(ss->pcs[i].regmap); - ss->pcs[i].pcs.ops = &mtk_pcs_ops; - ss->pcs[i].pcs.poll = true; - ss->pcs[i].interface = PHY_INTERFACE_MODE_NA; + regmap = syscon_node_to_regmap(np); + if (IS_ERR(regmap)) + return PTR_ERR(regmap); + + ss->pcs[i] = mtk_pcs_create(ss->dev, regmap, ana_rgc3, flags); } return 0; @@ -210,8 +45,17 @@ int mtk_sgmii_init(struct mtk_sgmii *ss, struct device_node *r, u32 ana_rgc3) struct phylink_pcs *mtk_sgmii_select_pcs(struct mtk_sgmii *ss, int id) { - if (!ss->pcs[id].regmap) - return NULL; + return ss->pcs[id]; +} + +void mtk_sgmii_destroy(struct mtk_sgmii *ss) +{ + int i; + + if (!ss) + return; - return &ss->pcs[id].pcs; + for (i = 0; i < MTK_MAX_DEVS; i++) + if (ss->pcs[i]) + mtk_pcs_destroy(ss->pcs[i]); } From patchwork Fri Feb 3 07:06:53 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Daniel Golle X-Patchwork-Id: 13127085 X-Patchwork-Delegate: kuba@kernel.org Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 5F90BC636CC for ; Fri, 3 Feb 2023 07:08:58 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S232096AbjBCHI4 (ORCPT ); Fri, 3 Feb 2023 02:08:56 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:60288 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231644AbjBCHIz (ORCPT ); Fri, 3 Feb 2023 02:08:55 -0500 Received: from fudo.makrotopia.org (fudo.makrotopia.org [IPv6:2a07:2ec0:3002::71]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 7DF0F23652; Thu, 2 Feb 2023 23:08:38 -0800 (PST) Received: from local by fudo.makrotopia.org with esmtpsa (TLS1.3:TLS_AES_256_GCM_SHA384:256) (Exim 4.96) (envelope-from ) id 1pNqBX-0000uy-2P; Fri, 03 Feb 2023 08:08:35 +0100 Date: Fri, 3 Feb 2023 07:06:53 +0000 From: Daniel Golle To: netdev@vger.kernel.org, linux-mediatek@lists.infradead.org, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, Russell King , Heiner Kallweit , Lorenzo Bianconi , Mark Lee , John Crispin , Felix Fietkau , AngeloGioacchino Del Regno , Matthias Brugger , DENG Qingfang , Landen Chao , Sean Wang , Paolo Abeni , Jakub Kicinski , Eric Dumazet , "David S. Miller" , Vladimir Oltean , Florian Fainelli , Andrew Lunn Cc: Jianhui Zhao , =?iso-8859-1?q?Bj=F8rn?= Mork Subject: [PATCH 9/9] net: dsa: mt7530: use external PCS driver Message-ID: <677a5e37aab97a4f992d35c41329733c5f3082fb.1675407169.git.daniel@makrotopia.org> References: MIME-Version: 1.0 Content-Disposition: inline In-Reply-To: Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org X-Patchwork-Delegate: kuba@kernel.org Implement regmap access wrappers, for now only to be used by the pcs-mtk driver. Make use of external PCS driver and drop the reduntant implementation in mt7530.c. As a nice side effect the SGMII registers can now also more easily be inspected for debugging via /sys/kernel/debug/regmap. Signed-off-by: Daniel Golle --- drivers/net/dsa/Kconfig | 2 + drivers/net/dsa/mt7530.c | 278 ++++++++++----------------------------- drivers/net/dsa/mt7530.h | 43 +----- 3 files changed, 72 insertions(+), 251 deletions(-) diff --git a/drivers/net/dsa/Kconfig b/drivers/net/dsa/Kconfig index f6f3b43dfb06..61b6608e45d6 100644 --- a/drivers/net/dsa/Kconfig +++ b/drivers/net/dsa/Kconfig @@ -38,6 +38,8 @@ config NET_DSA_MT7530 tristate "MediaTek MT7530 and MT7531 Ethernet switch support" select NET_DSA_TAG_MTK select MEDIATEK_GE_PHY + select PCS_MTK + select REGMAP help This enables support for the MediaTek MT7530 and MT7531 Ethernet switch chips. Multi-chip module MT7530 in MT7621AT, MT7621DAT, diff --git a/drivers/net/dsa/mt7530.c b/drivers/net/dsa/mt7530.c index 616b21c90d05..fb8ec7e479d1 100644 --- a/drivers/net/dsa/mt7530.c +++ b/drivers/net/dsa/mt7530.c @@ -14,6 +14,7 @@ #include #include #include +#include #include #include #include @@ -2555,128 +2556,11 @@ static int mt7531_rgmii_setup(struct mt7530_priv *priv, u32 port, return 0; } -static void mt7531_pcs_link_up(struct phylink_pcs *pcs, unsigned int mode, - phy_interface_t interface, int speed, int duplex) -{ - struct mt7530_priv *priv = pcs_to_mt753x_pcs(pcs)->priv; - int port = pcs_to_mt753x_pcs(pcs)->port; - unsigned int val; - - /* For adjusting speed and duplex of SGMII force mode. */ - if (interface != PHY_INTERFACE_MODE_SGMII || - phylink_autoneg_inband(mode)) - return; - - /* SGMII force mode setting */ - val = mt7530_read(priv, MT7531_SGMII_MODE(port)); - val &= ~MT7531_SGMII_IF_MODE_MASK; - - switch (speed) { - case SPEED_10: - val |= MT7531_SGMII_FORCE_SPEED_10; - break; - case SPEED_100: - val |= MT7531_SGMII_FORCE_SPEED_100; - break; - case SPEED_1000: - val |= MT7531_SGMII_FORCE_SPEED_1000; - break; - } - - /* MT7531 SGMII 1G force mode can only work in full duplex mode, - * no matter MT7531_SGMII_FORCE_HALF_DUPLEX is set or not. - * - * The speed check is unnecessary as the MAC capabilities apply - * this restriction. --rmk - */ - if ((speed == SPEED_10 || speed == SPEED_100) && - duplex != DUPLEX_FULL) - val |= MT7531_SGMII_FORCE_HALF_DUPLEX; - - mt7530_write(priv, MT7531_SGMII_MODE(port), val); -} - static bool mt753x_is_mac_port(u32 port) { return (port == 5 || port == 6); } -static int mt7531_sgmii_setup_mode_force(struct mt7530_priv *priv, u32 port, - phy_interface_t interface) -{ - u32 val; - - if (!mt753x_is_mac_port(port)) - return -EINVAL; - - mt7530_set(priv, MT7531_QPHY_PWR_STATE_CTRL(port), - MT7531_SGMII_PHYA_PWD); - - val = mt7530_read(priv, MT7531_PHYA_CTRL_SIGNAL3(port)); - val &= ~MT7531_RG_TPHY_SPEED_MASK; - /* Setup 2.5 times faster clock for 2.5Gbps data speeds with 10B/8B - * encoding. - */ - val |= (interface == PHY_INTERFACE_MODE_2500BASEX) ? - MT7531_RG_TPHY_SPEED_3_125G : MT7531_RG_TPHY_SPEED_1_25G; - mt7530_write(priv, MT7531_PHYA_CTRL_SIGNAL3(port), val); - - mt7530_clear(priv, MT7531_PCS_CONTROL_1(port), MT7531_SGMII_AN_ENABLE); - - /* MT7531 SGMII 1G and 2.5G force mode can only work in full duplex - * mode, no matter MT7531_SGMII_FORCE_HALF_DUPLEX is set or not. - */ - mt7530_rmw(priv, MT7531_SGMII_MODE(port), - MT7531_SGMII_IF_MODE_MASK | MT7531_SGMII_REMOTE_FAULT_DIS, - MT7531_SGMII_FORCE_SPEED_1000); - - mt7530_write(priv, MT7531_QPHY_PWR_STATE_CTRL(port), 0); - - return 0; -} - -static int mt7531_sgmii_setup_mode_an(struct mt7530_priv *priv, int port, - phy_interface_t interface) -{ - if (!mt753x_is_mac_port(port)) - return -EINVAL; - - mt7530_set(priv, MT7531_QPHY_PWR_STATE_CTRL(port), - MT7531_SGMII_PHYA_PWD); - - mt7530_rmw(priv, MT7531_PHYA_CTRL_SIGNAL3(port), - MT7531_RG_TPHY_SPEED_MASK, MT7531_RG_TPHY_SPEED_1_25G); - - mt7530_set(priv, MT7531_SGMII_MODE(port), - MT7531_SGMII_REMOTE_FAULT_DIS | - MT7531_SGMII_SPEED_DUPLEX_AN); - - mt7530_rmw(priv, MT7531_PCS_SPEED_ABILITY(port), - MT7531_SGMII_TX_CONFIG_MASK, 1); - - mt7530_set(priv, MT7531_PCS_CONTROL_1(port), MT7531_SGMII_AN_ENABLE); - - mt7530_set(priv, MT7531_PCS_CONTROL_1(port), MT7531_SGMII_AN_RESTART); - - mt7530_write(priv, MT7531_QPHY_PWR_STATE_CTRL(port), 0); - - return 0; -} - -static void mt7531_pcs_an_restart(struct phylink_pcs *pcs) -{ - struct mt7530_priv *priv = pcs_to_mt753x_pcs(pcs)->priv; - int port = pcs_to_mt753x_pcs(pcs)->port; - u32 val; - - /* Only restart AN when AN is enabled */ - val = mt7530_read(priv, MT7531_PCS_CONTROL_1(port)); - if (val & MT7531_SGMII_AN_ENABLE) { - val |= MT7531_SGMII_AN_RESTART; - mt7530_write(priv, MT7531_PCS_CONTROL_1(port), val); - } -} - static int mt7531_mac_config(struct dsa_switch *ds, int port, unsigned int mode, phy_interface_t interface) @@ -2699,11 +2583,11 @@ mt7531_mac_config(struct dsa_switch *ds, int port, unsigned int mode, phydev = dp->slave->phydev; return mt7531_rgmii_setup(priv, port, interface, phydev); case PHY_INTERFACE_MODE_SGMII: - return mt7531_sgmii_setup_mode_an(priv, port, interface); case PHY_INTERFACE_MODE_NA: case PHY_INTERFACE_MODE_1000BASEX: case PHY_INTERFACE_MODE_2500BASEX: - return mt7531_sgmii_setup_mode_force(priv, port, interface); + /* handled in SGMII PCS driver */ + return 0; default: return -EINVAL; } @@ -2728,11 +2612,14 @@ mt753x_phylink_mac_select_pcs(struct dsa_switch *ds, int port, switch (interface) { case PHY_INTERFACE_MODE_TRGMII: + return &priv->pcs[port].pcs; case PHY_INTERFACE_MODE_SGMII: case PHY_INTERFACE_MODE_1000BASEX: case PHY_INTERFACE_MODE_2500BASEX: - return &priv->pcs[port].pcs; + if (!mt753x_is_mac_port(port)) + return ERR_PTR(-EINVAL); + return priv->sgmii_pcs[port - 5]; default: return NULL; } @@ -2970,86 +2857,6 @@ static void mt7530_pcs_get_state(struct phylink_pcs *pcs, state->pause |= MLO_PAUSE_TX; } -static int -mt7531_sgmii_pcs_get_state_an(struct mt7530_priv *priv, int port, - struct phylink_link_state *state) -{ - u32 status, val; - u16 config_reg; - - status = mt7530_read(priv, MT7531_PCS_CONTROL_1(port)); - state->link = !!(status & MT7531_SGMII_LINK_STATUS); - state->an_complete = !!(status & MT7531_SGMII_AN_COMPLETE); - if (state->interface == PHY_INTERFACE_MODE_SGMII && - (status & MT7531_SGMII_AN_ENABLE)) { - val = mt7530_read(priv, MT7531_PCS_SPEED_ABILITY(port)); - config_reg = val >> 16; - - switch (config_reg & LPA_SGMII_SPD_MASK) { - case LPA_SGMII_1000: - state->speed = SPEED_1000; - break; - case LPA_SGMII_100: - state->speed = SPEED_100; - break; - case LPA_SGMII_10: - state->speed = SPEED_10; - break; - default: - dev_err(priv->dev, "invalid sgmii PHY speed\n"); - state->link = false; - return -EINVAL; - } - - if (config_reg & LPA_SGMII_FULL_DUPLEX) - state->duplex = DUPLEX_FULL; - else - state->duplex = DUPLEX_HALF; - } - - return 0; -} - -static void -mt7531_sgmii_pcs_get_state_inband(struct mt7530_priv *priv, int port, - struct phylink_link_state *state) -{ - unsigned int val; - - val = mt7530_read(priv, MT7531_PCS_CONTROL_1(port)); - state->link = !!(val & MT7531_SGMII_LINK_STATUS); - if (!state->link) - return; - - state->an_complete = state->link; - - if (state->interface == PHY_INTERFACE_MODE_2500BASEX) - state->speed = SPEED_2500; - else - state->speed = SPEED_1000; - - state->duplex = DUPLEX_FULL; - state->pause = MLO_PAUSE_NONE; -} - -static void mt7531_pcs_get_state(struct phylink_pcs *pcs, - struct phylink_link_state *state) -{ - struct mt7530_priv *priv = pcs_to_mt753x_pcs(pcs)->priv; - int port = pcs_to_mt753x_pcs(pcs)->port; - - if (state->interface == PHY_INTERFACE_MODE_SGMII) { - mt7531_sgmii_pcs_get_state_an(priv, port, state); - return; - } else if ((state->interface == PHY_INTERFACE_MODE_1000BASEX) || - (state->interface == PHY_INTERFACE_MODE_2500BASEX)) { - mt7531_sgmii_pcs_get_state_inband(priv, port, state); - return; - } - - state->link = false; -} - static int mt753x_pcs_config(struct phylink_pcs *pcs, unsigned int mode, phy_interface_t interface, const unsigned long *advertising, @@ -3069,18 +2876,57 @@ static const struct phylink_pcs_ops mt7530_pcs_ops = { .pcs_an_restart = mt7530_pcs_an_restart, }; -static const struct phylink_pcs_ops mt7531_pcs_ops = { - .pcs_validate = mt753x_pcs_validate, - .pcs_get_state = mt7531_pcs_get_state, - .pcs_config = mt753x_pcs_config, - .pcs_an_restart = mt7531_pcs_an_restart, - .pcs_link_up = mt7531_pcs_link_up, +static int mt7530_regmap_read(void *context, unsigned int reg, unsigned int *val) +{ + struct mt7530_priv *priv = context; + + *val = mt7530_read(priv, reg); + return 0; +}; + +static int mt7530_regmap_write(void *context, unsigned int reg, unsigned int val) +{ + struct mt7530_priv *priv = context; + + mt7530_write(priv, reg, val); + return 0; +}; + +static int mt7530_regmap_update_bits(void *context, unsigned int reg, + unsigned int mask, unsigned int val) +{ + struct mt7530_priv *priv = context; + + mt7530_rmw(priv, reg, mask, val); + return 0; +}; + +static const struct regmap_bus mt7531_regmap_bus = { + .reg_write = mt7530_regmap_write, + .reg_read = mt7530_regmap_read, + .reg_update_bits = mt7530_regmap_update_bits, +}; + +#define MT7531_PCS_REGMAP_CONFIG(_name, _reg_base) \ + { \ + .name = _name, \ + .reg_bits = 16, \ + .val_bits = 32, \ + .reg_stride = 4, \ + .reg_base = _reg_base, \ + .max_register = 0x17c, \ + } + +static const struct regmap_config mt7531_pcs_config[] = { + MT7531_PCS_REGMAP_CONFIG("port5", MT7531_SGMII_REG_BASE(5)), + MT7531_PCS_REGMAP_CONFIG("port6", MT7531_SGMII_REG_BASE(6)), }; static int mt753x_setup(struct dsa_switch *ds) { struct mt7530_priv *priv = ds->priv; + struct regmap *regmap; int i, ret; /* Initialise the PCS devices */ @@ -3088,8 +2934,6 @@ mt753x_setup(struct dsa_switch *ds) priv->pcs[i].pcs.ops = priv->info->pcs_ops; priv->pcs[i].priv = priv; priv->pcs[i].port = i; - if (mt753x_is_mac_port(i)) - priv->pcs[i].pcs.poll = 1; } ret = priv->info->sw_setup(ds); @@ -3104,6 +2948,15 @@ mt753x_setup(struct dsa_switch *ds) if (ret && priv->irq) mt7530_free_irq_common(priv); + if (priv->id == ID_MT7531) + for (i = 0; i < 2; ++i) { + regmap = devm_regmap_init(ds->dev, + &mt7531_regmap_bus, priv, + &mt7531_pcs_config[i]); + priv->sgmii_pcs[i] = mtk_pcs_create(ds->dev, regmap, + 0x128, 0); + } + return ret; } @@ -3199,7 +3052,7 @@ static const struct mt753x_info mt753x_table[] = { }, [ID_MT7531] = { .id = ID_MT7531, - .pcs_ops = &mt7531_pcs_ops, + .pcs_ops = &mt7530_pcs_ops, .sw_setup = mt7531_setup, .phy_read_c22 = mt7531_ind_c22_phy_read, .phy_write_c22 = mt7531_ind_c22_phy_write, @@ -3309,7 +3162,7 @@ static void mt7530_remove(struct mdio_device *mdiodev) { struct mt7530_priv *priv = dev_get_drvdata(&mdiodev->dev); - int ret = 0; + int ret = 0, i; if (!priv) return; @@ -3328,6 +3181,11 @@ mt7530_remove(struct mdio_device *mdiodev) mt7530_free_irq(priv); dsa_unregister_switch(priv->ds); + + for (i = 0; i < 2; ++i) + if (priv->sgmii_pcs[i]) + mtk_pcs_destroy(priv->sgmii_pcs[i]); + mutex_destroy(&priv->reg_mutex); } diff --git a/drivers/net/dsa/mt7530.h b/drivers/net/dsa/mt7530.h index 6b2fc6290ea8..dedbd707634a 100644 --- a/drivers/net/dsa/mt7530.h +++ b/drivers/net/dsa/mt7530.h @@ -364,47 +364,7 @@ enum mt7530_vlan_port_acc_frm { CCR_TX_OCT_CNT_BAD) /* MT7531 SGMII register group */ -#define MT7531_SGMII_REG_BASE 0x5000 -#define MT7531_SGMII_REG(p, r) (MT7531_SGMII_REG_BASE + \ - ((p) - 5) * 0x1000 + (r)) - -/* Register forSGMII PCS_CONTROL_1 */ -#define MT7531_PCS_CONTROL_1(p) MT7531_SGMII_REG(p, 0x00) -#define MT7531_SGMII_LINK_STATUS BIT(18) -#define MT7531_SGMII_AN_ENABLE BIT(12) -#define MT7531_SGMII_AN_RESTART BIT(9) -#define MT7531_SGMII_AN_COMPLETE BIT(21) - -/* Register for SGMII PCS_SPPED_ABILITY */ -#define MT7531_PCS_SPEED_ABILITY(p) MT7531_SGMII_REG(p, 0x08) -#define MT7531_SGMII_TX_CONFIG_MASK GENMASK(15, 0) -#define MT7531_SGMII_TX_CONFIG BIT(0) - -/* Register for SGMII_MODE */ -#define MT7531_SGMII_MODE(p) MT7531_SGMII_REG(p, 0x20) -#define MT7531_SGMII_REMOTE_FAULT_DIS BIT(8) -#define MT7531_SGMII_IF_MODE_MASK GENMASK(5, 1) -#define MT7531_SGMII_FORCE_DUPLEX BIT(4) -#define MT7531_SGMII_FORCE_SPEED_MASK GENMASK(3, 2) -#define MT7531_SGMII_FORCE_SPEED_1000 BIT(3) -#define MT7531_SGMII_FORCE_SPEED_100 BIT(2) -#define MT7531_SGMII_FORCE_SPEED_10 0 -#define MT7531_SGMII_SPEED_DUPLEX_AN BIT(1) - -enum mt7531_sgmii_force_duplex { - MT7531_SGMII_FORCE_FULL_DUPLEX = 0, - MT7531_SGMII_FORCE_HALF_DUPLEX = 0x10, -}; - -/* Fields of QPHY_PWR_STATE_CTRL */ -#define MT7531_QPHY_PWR_STATE_CTRL(p) MT7531_SGMII_REG(p, 0xe8) -#define MT7531_SGMII_PHYA_PWD BIT(4) - -/* Values of SGMII SPEED */ -#define MT7531_PHYA_CTRL_SIGNAL3(p) MT7531_SGMII_REG(p, 0x128) -#define MT7531_RG_TPHY_SPEED_MASK (BIT(2) | BIT(3)) -#define MT7531_RG_TPHY_SPEED_1_25G 0x0 -#define MT7531_RG_TPHY_SPEED_3_125G BIT(2) +#define MT7531_SGMII_REG_BASE(p) (0x5000 + ((p) - 5) * 0x1000) /* Register for system reset */ #define MT7530_SYS_CTRL 0x7000 @@ -828,6 +788,7 @@ struct mt7530_priv { struct mt7530_port ports[MT7530_NUM_PORTS]; struct mt753x_pcs pcs[MT7530_NUM_PORTS]; + struct phylink_pcs *sgmii_pcs[2]; /* protect among processes for registers access*/ struct mutex reg_mutex; int irq;