X-Git-Url: https://gerrit.opnfv.org/gerrit/gitweb?a=blobdiff_plain;f=kernel%2Fdrivers%2Fnet%2Fethernet%2Famd%2Fxgbe%2Fxgbe-mdio.c;fp=kernel%2Fdrivers%2Fnet%2Fethernet%2Famd%2Fxgbe%2Fxgbe-mdio.c;h=59e267f3f1b77e1ca34cbd0eaca7c760653450b4;hb=9ca8dbcc65cfc63d6f5ef3312a33184e1d726e00;hp=0000000000000000000000000000000000000000;hpb=98260f3884f4a202f9ca5eabed40b1354c489b29;p=kvmfornfv.git
diff --git a/kernel/drivers/net/ethernet/amd/xgbe/xgbe-mdio.c b/kernel/drivers/net/ethernet/amd/xgbe/xgbe-mdio.c
new file mode 100644
index 000000000..59e267f3f
--- /dev/null
+++ b/kernel/drivers/net/ethernet/amd/xgbe/xgbe-mdio.c
@@ -0,0 +1,312 @@
+/*
+ * AMD 10Gb Ethernet driver
+ *
+ * This file is available to you under your choice of the following two
+ * licenses:
+ *
+ * License 1: GPLv2
+ *
+ * Copyright (c) 2014 Advanced Micro Devices, Inc.
+ *
+ * This file is free software; you may copy, redistribute and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 2 of the License, or (at
+ * your option) any later version.
+ *
+ * This file is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see .
+ *
+ * This file incorporates work covered by the following copyright and
+ * permission notice:
+ * The Synopsys DWC ETHER XGMAC Software Driver and documentation
+ * (hereinafter "Software") is an unsupported proprietary work of Synopsys,
+ * Inc. unless otherwise expressly agreed to in writing between Synopsys
+ * and you.
+ *
+ * The Software IS NOT an item of Licensed Software or Licensed Product
+ * under any End User Software License Agreement or Agreement for Licensed
+ * Product with Synopsys or any supplement thereto. Permission is hereby
+ * granted, free of charge, to any person obtaining a copy of this software
+ * annotated with this license and the Software, to deal in the Software
+ * without restriction, including without limitation the rights to use,
+ * copy, modify, merge, publish, distribute, sublicense, and/or sell copies
+ * of the Software, and to permit persons to whom the Software is furnished
+ * to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included
+ * in all copies or substantial portions of the Software.
+ *
+ * THIS SOFTWARE IS BEING DISTRIBUTED BY SYNOPSYS SOLELY ON AN "AS IS"
+ * BASIS AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
+ * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
+ * PARTICULAR PURPOSE ARE HEREBY DISCLAIMED. IN NO EVENT SHALL SYNOPSYS
+ * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
+ * THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ *
+ * License 2: Modified BSD
+ *
+ * Copyright (c) 2014 Advanced Micro Devices, Inc.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ * * Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * * Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ * * Neither the name of Advanced Micro Devices, Inc. nor the
+ * names of its contributors may be used to endorse or promote products
+ * derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL BE LIABLE FOR ANY
+ * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+ * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
+ * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+ * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ * This file incorporates work covered by the following copyright and
+ * permission notice:
+ * The Synopsys DWC ETHER XGMAC Software Driver and documentation
+ * (hereinafter "Software") is an unsupported proprietary work of Synopsys,
+ * Inc. unless otherwise expressly agreed to in writing between Synopsys
+ * and you.
+ *
+ * The Software IS NOT an item of Licensed Software or Licensed Product
+ * under any End User Software License Agreement or Agreement for Licensed
+ * Product with Synopsys or any supplement thereto. Permission is hereby
+ * granted, free of charge, to any person obtaining a copy of this software
+ * annotated with this license and the Software, to deal in the Software
+ * without restriction, including without limitation the rights to use,
+ * copy, modify, merge, publish, distribute, sublicense, and/or sell copies
+ * of the Software, and to permit persons to whom the Software is furnished
+ * to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included
+ * in all copies or substantial portions of the Software.
+ *
+ * THIS SOFTWARE IS BEING DISTRIBUTED BY SYNOPSYS SOLELY ON AN "AS IS"
+ * BASIS AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
+ * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
+ * PARTICULAR PURPOSE ARE HEREBY DISCLAIMED. IN NO EVENT SHALL SYNOPSYS
+ * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
+ * THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#include
+#include
+#include
+#include
+#include
+
+#include "xgbe.h"
+#include "xgbe-common.h"
+
+static int xgbe_mdio_read(struct mii_bus *mii, int prtad, int mmd_reg)
+{
+ struct xgbe_prv_data *pdata = mii->priv;
+ struct xgbe_hw_if *hw_if = &pdata->hw_if;
+ int mmd_data;
+
+ DBGPR_MDIO("-->xgbe_mdio_read: prtad=%#x mmd_reg=%#x\n",
+ prtad, mmd_reg);
+
+ mmd_data = hw_if->read_mmd_regs(pdata, prtad, mmd_reg);
+
+ DBGPR_MDIO("<--xgbe_mdio_read: mmd_data=%#x\n", mmd_data);
+
+ return mmd_data;
+}
+
+static int xgbe_mdio_write(struct mii_bus *mii, int prtad, int mmd_reg,
+ u16 mmd_val)
+{
+ struct xgbe_prv_data *pdata = mii->priv;
+ struct xgbe_hw_if *hw_if = &pdata->hw_if;
+ int mmd_data = mmd_val;
+
+ DBGPR_MDIO("-->xgbe_mdio_write: prtad=%#x mmd_reg=%#x mmd_data=%#x\n",
+ prtad, mmd_reg, mmd_data);
+
+ hw_if->write_mmd_regs(pdata, prtad, mmd_reg, mmd_data);
+
+ DBGPR_MDIO("<--xgbe_mdio_write\n");
+
+ return 0;
+}
+
+void xgbe_dump_phy_registers(struct xgbe_prv_data *pdata)
+{
+ struct device *dev = pdata->dev;
+ struct phy_device *phydev = pdata->mii->phy_map[XGBE_PRTAD];
+ int i;
+
+ dev_alert(dev, "\n************* PHY Reg dump **********************\n");
+
+ dev_alert(dev, "PCS Control Reg (%#04x) = %#04x\n", MDIO_CTRL1,
+ XMDIO_READ(pdata, MDIO_MMD_PCS, MDIO_CTRL1));
+ dev_alert(dev, "PCS Status Reg (%#04x) = %#04x\n", MDIO_STAT1,
+ XMDIO_READ(pdata, MDIO_MMD_PCS, MDIO_STAT1));
+ dev_alert(dev, "Phy Id (PHYS ID 1 %#04x)= %#04x\n", MDIO_DEVID1,
+ XMDIO_READ(pdata, MDIO_MMD_PCS, MDIO_DEVID1));
+ dev_alert(dev, "Phy Id (PHYS ID 2 %#04x)= %#04x\n", MDIO_DEVID2,
+ XMDIO_READ(pdata, MDIO_MMD_PCS, MDIO_DEVID2));
+ dev_alert(dev, "Devices in Package (%#04x)= %#04x\n", MDIO_DEVS1,
+ XMDIO_READ(pdata, MDIO_MMD_PCS, MDIO_DEVS1));
+ dev_alert(dev, "Devices in Package (%#04x)= %#04x\n", MDIO_DEVS2,
+ XMDIO_READ(pdata, MDIO_MMD_PCS, MDIO_DEVS2));
+
+ dev_alert(dev, "Auto-Neg Control Reg (%#04x) = %#04x\n", MDIO_CTRL1,
+ XMDIO_READ(pdata, MDIO_MMD_AN, MDIO_CTRL1));
+ dev_alert(dev, "Auto-Neg Status Reg (%#04x) = %#04x\n", MDIO_STAT1,
+ XMDIO_READ(pdata, MDIO_MMD_AN, MDIO_STAT1));
+ dev_alert(dev, "Auto-Neg Ad Reg 1 (%#04x) = %#04x\n",
+ MDIO_AN_ADVERTISE,
+ XMDIO_READ(pdata, MDIO_MMD_AN, MDIO_AN_ADVERTISE));
+ dev_alert(dev, "Auto-Neg Ad Reg 2 (%#04x) = %#04x\n",
+ MDIO_AN_ADVERTISE + 1,
+ XMDIO_READ(pdata, MDIO_MMD_AN, MDIO_AN_ADVERTISE + 1));
+ dev_alert(dev, "Auto-Neg Ad Reg 3 (%#04x) = %#04x\n",
+ MDIO_AN_ADVERTISE + 2,
+ XMDIO_READ(pdata, MDIO_MMD_AN, MDIO_AN_ADVERTISE + 2));
+ dev_alert(dev, "Auto-Neg Completion Reg (%#04x) = %#04x\n",
+ MDIO_AN_COMP_STAT,
+ XMDIO_READ(pdata, MDIO_MMD_AN, MDIO_AN_COMP_STAT));
+
+ dev_alert(dev, "MMD Device Mask = %#x\n",
+ phydev->c45_ids.devices_in_package);
+ for (i = 0; i < ARRAY_SIZE(phydev->c45_ids.device_ids); i++)
+ dev_alert(dev, " MMD %d: ID = %#08x\n", i,
+ phydev->c45_ids.device_ids[i]);
+
+ dev_alert(dev, "\n*************************************************\n");
+}
+
+int xgbe_mdio_register(struct xgbe_prv_data *pdata)
+{
+ struct mii_bus *mii;
+ struct phy_device *phydev;
+ int ret = 0;
+
+ DBGPR("-->xgbe_mdio_register\n");
+
+ mii = mdiobus_alloc();
+ if (!mii) {
+ dev_err(pdata->dev, "mdiobus_alloc failed\n");
+ return -ENOMEM;
+ }
+
+ /* Register on the MDIO bus (don't probe any PHYs) */
+ mii->name = XGBE_PHY_NAME;
+ mii->read = xgbe_mdio_read;
+ mii->write = xgbe_mdio_write;
+ snprintf(mii->id, sizeof(mii->id), "%s", pdata->mii_bus_id);
+ mii->priv = pdata;
+ mii->phy_mask = ~0;
+ mii->parent = pdata->dev;
+ ret = mdiobus_register(mii);
+ if (ret) {
+ dev_err(pdata->dev, "mdiobus_register failed\n");
+ goto err_mdiobus_alloc;
+ }
+ DBGPR(" mdiobus_register succeeded for %s\n", pdata->mii_bus_id);
+
+ /* Probe the PCS using Clause 45 */
+ phydev = get_phy_device(mii, XGBE_PRTAD, true);
+ if (IS_ERR(phydev) || !phydev ||
+ !phydev->c45_ids.device_ids[MDIO_MMD_PCS]) {
+ dev_err(pdata->dev, "get_phy_device failed\n");
+ ret = phydev ? PTR_ERR(phydev) : -ENOLINK;
+ goto err_mdiobus_register;
+ }
+ request_module(MDIO_MODULE_PREFIX MDIO_ID_FMT,
+ MDIO_ID_ARGS(phydev->c45_ids.device_ids[MDIO_MMD_PCS]));
+
+ ret = phy_device_register(phydev);
+ if (ret) {
+ dev_err(pdata->dev, "phy_device_register failed\n");
+ goto err_phy_device;
+ }
+ if (!phydev->dev.driver) {
+ dev_err(pdata->dev, "phy driver probe failed\n");
+ ret = -EIO;
+ goto err_phy_device;
+ }
+
+ /* Add a reference to the PHY driver so it can't be unloaded */
+ pdata->phy_module = phydev->dev.driver->owner;
+ if (!try_module_get(pdata->phy_module)) {
+ dev_err(pdata->dev, "try_module_get failed\n");
+ ret = -EIO;
+ goto err_phy_device;
+ }
+
+ pdata->mii = mii;
+ pdata->mdio_mmd = MDIO_MMD_PCS;
+
+ phydev->autoneg = pdata->default_autoneg;
+ if (phydev->autoneg == AUTONEG_DISABLE) {
+ phydev->speed = pdata->default_speed;
+ phydev->duplex = DUPLEX_FULL;
+
+ phydev->advertising &= ~ADVERTISED_Autoneg;
+ }
+
+ pdata->phydev = phydev;
+
+ DBGPHY_REGS(pdata);
+
+ DBGPR("<--xgbe_mdio_register\n");
+
+ return 0;
+
+err_phy_device:
+ phy_device_free(phydev);
+
+err_mdiobus_register:
+ mdiobus_unregister(mii);
+
+err_mdiobus_alloc:
+ mdiobus_free(mii);
+
+ return ret;
+}
+
+void xgbe_mdio_unregister(struct xgbe_prv_data *pdata)
+{
+ DBGPR("-->xgbe_mdio_unregister\n");
+
+ pdata->phydev = NULL;
+
+ module_put(pdata->phy_module);
+ pdata->phy_module = NULL;
+
+ mdiobus_unregister(pdata->mii);
+ pdata->mii->priv = NULL;
+
+ mdiobus_free(pdata->mii);
+ pdata->mii = NULL;
+
+ DBGPR("<--xgbe_mdio_unregister\n");
+}