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Miller" , Eric Dumazet , Jakub Kicinski , Paolo Abeni , Jan Petrous , Ondrej Spacek , Ghennadi Procopciuc , Andra-Teodora Ilie , =?utf-8?q?Andreas_F=C3=A4rber?= , Matthias Brugger Subject: [PATCH v2 5/5] net: stmmac: Add NXP S32 SoC family support Date: Mon, 28 Nov 2022 13:49:20 +0800 Message-Id: <20221128054920.2113-6-clin@suse.com> X-Mailer: git-send-email 2.37.3 In-Reply-To: <20221128054920.2113-1-clin@suse.com> References: <20221128054920.2113-1-clin@suse.com> X-ClientProxiedBy: TYCP286CA0138.JPNP286.PROD.OUTLOOK.COM (2603:1096:400:31b::13) To VI1PR0402MB3439.eurprd04.prod.outlook.com (2603:10a6:803:4::13) MIME-Version: 1.0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: VI1PR0402MB3439:EE_|DB9PR04MB8478:EE_ X-MS-Office365-Filtering-Correlation-Id: c1eb77fa-d20e-4953-ae41-08dad1046e5d X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0; X-Microsoft-Antispam-Message-Info: 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 X-Forefront-Antispam-Report: CIP:255.255.255.255;CTRY:;LANG:en;SCL:1;SRV:;IPV:NLI;SFV:NSPM;H:VI1PR0402MB3439.eurprd04.prod.outlook.com;PTR:;CAT:NONE;SFS:(13230022)(346002)(39860400002)(376002)(396003)(366004)(136003)(451199015)(107886003)(2906002)(186003)(6486002)(966005)(6506007)(36756003)(478600001)(6666004)(6512007)(1076003)(38100700002)(86362001)(83380400001)(2616005)(41300700001)(30864003)(66556008)(66476007)(8676002)(66946007)(5660300002)(4326008)(7416002)(8936002)(54906003)(316002)(110136005);DIR:OUT;SFP:1101; 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This driver is mainly based on NXP's downstream implementation on CodeAurora[1]. [1] https://source.codeaurora.org/external/autobsps32/linux/tree/drivers/net/ethernet/stmicro/stmmac?h=bsp34.0-5.10.120-rt Signed-off-by: Jan Petrous Signed-off-by: Ghennadi Procopciuc Signed-off-by: Andra-Teodora Ilie Signed-off-by: Chester Lin --- Changes in v2: - Replace clock names tx_sgmii/rx_sgmii with tx_pcs/rx_pcs. - Adjust error handlings while calling devm_clk_get(). - Remove redundant dev_info messages. - Remove unnecessary if conditions. - Fix the copyright format suggested by NXP. drivers/net/ethernet/stmicro/stmmac/Kconfig | 13 + drivers/net/ethernet/stmicro/stmmac/Makefile | 1 + .../net/ethernet/stmicro/stmmac/dwmac-s32cc.c | 304 ++++++++++++++++++ 3 files changed, 318 insertions(+) create mode 100644 drivers/net/ethernet/stmicro/stmmac/dwmac-s32cc.c diff --git a/drivers/net/ethernet/stmicro/stmmac/Kconfig b/drivers/net/ethernet/stmicro/stmmac/Kconfig index 31ff35174034..dd3fb5e462b7 100644 --- a/drivers/net/ethernet/stmicro/stmmac/Kconfig +++ b/drivers/net/ethernet/stmicro/stmmac/Kconfig @@ -153,6 +153,19 @@ config DWMAC_ROCKCHIP This selects the Rockchip RK3288 SoC glue layer support for the stmmac device driver. +config DWMAC_S32CC + tristate "NXP S32 series GMAC support" + default ARCH_S32 + depends on OF && (ARCH_S32 || COMPILE_TEST) + select MFD_SYSCON + select PHYLINK + help + Support for ethernet controller on NXP S32 series SOCs. + + This selects NXP SoC glue layer support for the stmmac + device driver. This driver is used for the S32 series + SOCs GMAC ethernet controller. + config DWMAC_SOCFPGA tristate "SOCFPGA dwmac support" default ARCH_INTEL_SOCFPGA diff --git a/drivers/net/ethernet/stmicro/stmmac/Makefile b/drivers/net/ethernet/stmicro/stmmac/Makefile index d4e12e9ace4f..ec92cc2becd7 100644 --- a/drivers/net/ethernet/stmicro/stmmac/Makefile +++ b/drivers/net/ethernet/stmicro/stmmac/Makefile @@ -32,6 +32,7 @@ obj-$(CONFIG_DWMAC_INTEL_PLAT) += dwmac-intel-plat.o obj-$(CONFIG_DWMAC_GENERIC) += dwmac-generic.o obj-$(CONFIG_DWMAC_IMX8) += dwmac-imx.o obj-$(CONFIG_DWMAC_VISCONTI) += dwmac-visconti.o +obj-$(CONFIG_DWMAC_S32CC) += dwmac-s32cc.o stmmac-platform-objs:= stmmac_platform.o dwmac-altr-socfpga-objs := altr_tse_pcs.o dwmac-socfpga.o diff --git a/drivers/net/ethernet/stmicro/stmmac/dwmac-s32cc.c b/drivers/net/ethernet/stmicro/stmmac/dwmac-s32cc.c new file mode 100644 index 000000000000..92a132ad985a --- /dev/null +++ b/drivers/net/ethernet/stmicro/stmmac/dwmac-s32cc.c @@ -0,0 +1,304 @@ +// SPDX-License-Identifier: GPL-2.0-only +/* + * DWMAC Specific Glue layer for NXP S32 Common Chassis + * + * Copyright 2019-2022 NXP + * Copyright (C) 2022 SUSE LLC + * + */ + +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include + +#include "stmmac_platform.h" + +#define GMAC_TX_RATE_125M 125000000 /* 125MHz */ +#define GMAC_TX_RATE_25M 25000000 /* 25MHz */ +#define GMAC_TX_RATE_2M5 2500000 /* 2.5MHz */ + +/* S32 SRC register for phyif selection */ +#define PHY_INTF_SEL_MII 0x00 +#define PHY_INTF_SEL_SGMII 0x01 +#define PHY_INTF_SEL_RGMII 0x02 +#define PHY_INTF_SEL_RMII 0x08 + +/* AXI4 ACE control settings */ +#define ACE_DOMAIN_SIGNAL 0x2 +#define ACE_CACHE_SIGNAL 0xf +#define ACE_CONTROL_SIGNALS ((ACE_DOMAIN_SIGNAL << 4) | ACE_CACHE_SIGNAL) +#define ACE_PROTECTION 0x2 + +struct s32cc_priv_data { + void __iomem *ctrl_sts; + struct device *dev; + phy_interface_t intf_mode; + struct clk *tx_clk; + struct clk *rx_clk; +}; + +static int s32cc_gmac_init(struct platform_device *pdev, void *priv) +{ + struct s32cc_priv_data *gmac = priv; + u32 intf_sel; + int ret; + + ret = clk_prepare_enable(gmac->tx_clk); + if (ret) { + dev_err(&pdev->dev, "Can't enable tx clock\n"); + return ret; + } + + ret = clk_prepare_enable(gmac->rx_clk); + if (ret) { + dev_err(&pdev->dev, "Can't enable rx clock\n"); + return ret; + } + + /* set interface mode */ + switch (gmac->intf_mode) { + case PHY_INTERFACE_MODE_SGMII: + intf_sel = PHY_INTF_SEL_SGMII; + break; + case PHY_INTERFACE_MODE_RGMII: + case PHY_INTERFACE_MODE_RGMII_ID: + case PHY_INTERFACE_MODE_RGMII_TXID: + case PHY_INTERFACE_MODE_RGMII_RXID: + intf_sel = PHY_INTF_SEL_RGMII; + break; + case PHY_INTERFACE_MODE_RMII: + intf_sel = PHY_INTF_SEL_RMII; + break; + case PHY_INTERFACE_MODE_MII: + intf_sel = PHY_INTF_SEL_MII; + break; + default: + dev_err(&pdev->dev, "Unsupported PHY interface: %s\n", + phy_modes(gmac->intf_mode)); + return -EINVAL; + } + + writel(intf_sel, gmac->ctrl_sts); + + dev_dbg(&pdev->dev, "PHY mode set to %s\n", phy_modes(gmac->intf_mode)); + + return 0; +} + +static void s32cc_gmac_exit(struct platform_device *pdev, void *priv) +{ + struct s32cc_priv_data *gmac = priv; + + clk_disable_unprepare(gmac->tx_clk); + clk_disable_unprepare(gmac->rx_clk); +} + +static void s32cc_fix_speed(void *priv, unsigned int speed) +{ + struct s32cc_priv_data *gmac = priv; + + /* SGMII mode doesn't support the clock reconfiguration */ + if (gmac->intf_mode == PHY_INTERFACE_MODE_SGMII) + return; + + switch (speed) { + case SPEED_1000: + dev_info(gmac->dev, "Set TX clock to 125M\n"); + clk_set_rate(gmac->tx_clk, GMAC_TX_RATE_125M); + break; + case SPEED_100: + dev_info(gmac->dev, "Set TX clock to 25M\n"); + clk_set_rate(gmac->tx_clk, GMAC_TX_RATE_25M); + break; + case SPEED_10: + dev_info(gmac->dev, "Set TX clock to 2.5M\n"); + clk_set_rate(gmac->tx_clk, GMAC_TX_RATE_2M5); + break; + default: + dev_err(gmac->dev, "Unsupported/Invalid speed: %d\n", speed); + return; + } +} + +static int s32cc_config_cache_coherency(struct platform_device *pdev, + struct plat_stmmacenet_data *plat_dat) +{ + plat_dat->axi4_ace_ctrl = + devm_kzalloc(&pdev->dev, + sizeof(struct stmmac_axi4_ace_ctrl), + GFP_KERNEL); + + if (!plat_dat->axi4_ace_ctrl) + return -ENOMEM; + + plat_dat->axi4_ace_ctrl->tx_ar_reg = (ACE_CONTROL_SIGNALS << 16) + | (ACE_CONTROL_SIGNALS << 8) | ACE_CONTROL_SIGNALS; + + plat_dat->axi4_ace_ctrl->rx_aw_reg = (ACE_CONTROL_SIGNALS << 24) + | (ACE_CONTROL_SIGNALS << 16) | (ACE_CONTROL_SIGNALS << 8) + | ACE_CONTROL_SIGNALS; + + plat_dat->axi4_ace_ctrl->txrx_awar_reg = (ACE_PROTECTION << 20) + | (ACE_PROTECTION << 16) | (ACE_CONTROL_SIGNALS << 8) + | ACE_CONTROL_SIGNALS; + + return 0; +} + +static int s32cc_dwmac_probe(struct platform_device *pdev) +{ + struct plat_stmmacenet_data *plat_dat; + struct stmmac_resources stmmac_res; + struct s32cc_priv_data *gmac; + struct resource *res; + const char *tx_clk, *rx_clk; + int ret; + + ret = stmmac_get_platform_resources(pdev, &stmmac_res); + if (ret) + return ret; + + gmac = devm_kzalloc(&pdev->dev, sizeof(*gmac), GFP_KERNEL); + if (!gmac) + return PTR_ERR(gmac); + + gmac->dev = &pdev->dev; + + /* S32G control reg */ + res = platform_get_resource(pdev, IORESOURCE_MEM, 1); + gmac->ctrl_sts = devm_ioremap_resource(&pdev->dev, res); + if (IS_ERR_OR_NULL(gmac->ctrl_sts)) { + dev_err(&pdev->dev, "S32CC config region is missing\n"); + return PTR_ERR(gmac->ctrl_sts); + } + + plat_dat = stmmac_probe_config_dt(pdev, stmmac_res.mac); + if (IS_ERR(plat_dat)) + return PTR_ERR(plat_dat); + + plat_dat->bsp_priv = gmac; + + switch (plat_dat->phy_interface) { + case PHY_INTERFACE_MODE_SGMII: + tx_clk = "tx_pcs"; + rx_clk = "rx_pcs"; + break; + case PHY_INTERFACE_MODE_RGMII: + case PHY_INTERFACE_MODE_RGMII_ID: + case PHY_INTERFACE_MODE_RGMII_TXID: + case PHY_INTERFACE_MODE_RGMII_RXID: + tx_clk = "tx_rgmii"; + rx_clk = "rx_rgmii"; + break; + case PHY_INTERFACE_MODE_RMII: + tx_clk = "tx_rmii"; + rx_clk = "rx_rmii"; + break; + case PHY_INTERFACE_MODE_MII: + tx_clk = "tx_mii"; + rx_clk = "rx_mii"; + break; + default: + dev_err(&pdev->dev, "Not supported phy interface mode: [%s]\n", + phy_modes(plat_dat->phy_interface)); + return -EINVAL; + }; + + gmac->intf_mode = plat_dat->phy_interface; + + /* DMA cache coherency settings */ + if (of_dma_is_coherent(pdev->dev.of_node)) { + ret = s32cc_config_cache_coherency(pdev, plat_dat); + if (ret) + goto err_remove_config_dt; + } + + /* tx clock */ + gmac->tx_clk = devm_clk_get(&pdev->dev, tx_clk); + if (IS_ERR(gmac->tx_clk)) { + dev_err(&pdev->dev, "Get TX clock failed\n"); + ret = PTR_ERR(gmac->tx_clk); + goto err_remove_config_dt; + } + + /* rx clock */ + gmac->rx_clk = devm_clk_get(&pdev->dev, rx_clk); + if (IS_ERR(gmac->rx_clk)) { + dev_err(&pdev->dev, "Get RX clock failed\n"); + ret = PTR_ERR(gmac->rx_clk); + goto err_remove_config_dt; + } + + ret = s32cc_gmac_init(pdev, gmac); + if (ret) + goto err_remove_config_dt; + + /* core feature set */ + plat_dat->has_gmac4 = true; + plat_dat->pmt = 1; + + plat_dat->init = s32cc_gmac_init; + plat_dat->exit = s32cc_gmac_exit; + plat_dat->fix_mac_speed = s32cc_fix_speed; + + /* safety feature config */ + plat_dat->safety_feat_cfg = + devm_kzalloc(&pdev->dev, sizeof(*plat_dat->safety_feat_cfg), + GFP_KERNEL); + + if (!plat_dat->safety_feat_cfg) { + dev_err(&pdev->dev, "Allocate safety_feat_cfg failed\n"); + goto err_gmac_exit; + } + + plat_dat->safety_feat_cfg->tsoee = 1; + plat_dat->safety_feat_cfg->mrxpee = 1; + plat_dat->safety_feat_cfg->mestee = 1; + plat_dat->safety_feat_cfg->mrxee = 1; + plat_dat->safety_feat_cfg->mtxee = 1; + plat_dat->safety_feat_cfg->epsi = 1; + plat_dat->safety_feat_cfg->edpp = 1; + plat_dat->safety_feat_cfg->prtyen = 1; + plat_dat->safety_feat_cfg->tmouten = 1; + + ret = stmmac_dvr_probe(&pdev->dev, plat_dat, &stmmac_res); + if (ret) + goto err_gmac_exit; + + return 0; + +err_gmac_exit: + s32cc_gmac_exit(pdev, plat_dat->bsp_priv); +err_remove_config_dt: + stmmac_remove_config_dt(pdev, plat_dat); + return ret; +} + +static const struct of_device_id s32_dwmac_match[] = { + { .compatible = "nxp,s32cc-dwmac" }, + { } +}; +MODULE_DEVICE_TABLE(of, s32_dwmac_match); + +static struct platform_driver s32_dwmac_driver = { + .probe = s32cc_dwmac_probe, + .remove = stmmac_pltfr_remove, + .driver = { + .name = "s32cc-dwmac", + .pm = &stmmac_pltfr_pm_ops, + .of_match_table = s32_dwmac_match, + }, +}; +module_platform_driver(s32_dwmac_driver); + +MODULE_AUTHOR("Jan Petrous "); +MODULE_DESCRIPTION("NXP S32 common chassis GMAC driver"); +MODULE_LICENSE("GPL v2");