491 lines
16 KiB
C
491 lines
16 KiB
C
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/*
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* AMD 10Gb Ethernet driver
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*
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* This file is available to you under your choice of the following two
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* licenses:
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*
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* License 1: GPLv2
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*
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* Copyright (c) 2014-2016 Advanced Micro Devices, Inc.
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*
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* This file is free software; you may copy, redistribute and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 2 of the License, or (at
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* your option) any later version.
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*
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* This file is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*
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* This file incorporates work covered by the following copyright and
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* permission notice:
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* The Synopsys DWC ETHER XGMAC Software Driver and documentation
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* (hereinafter "Software") is an unsupported proprietary work of Synopsys,
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* Inc. unless otherwise expressly agreed to in writing between Synopsys
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* and you.
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*
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* The Software IS NOT an item of Licensed Software or Licensed Product
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* under any End User Software License Agreement or Agreement for Licensed
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* Product with Synopsys or any supplement thereto. Permission is hereby
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* granted, free of charge, to any person obtaining a copy of this software
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* annotated with this license and the Software, to deal in the Software
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* without restriction, including without limitation the rights to use,
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* copy, modify, merge, publish, distribute, sublicense, and/or sell copies
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* of the Software, and to permit persons to whom the Software is furnished
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* to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included
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* in all copies or substantial portions of the Software.
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*
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* THIS SOFTWARE IS BEING DISTRIBUTED BY SYNOPSYS SOLELY ON AN "AS IS"
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* BASIS AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
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* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
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* PARTICULAR PURPOSE ARE HEREBY DISCLAIMED. IN NO EVENT SHALL SYNOPSYS
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* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
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* THE POSSIBILITY OF SUCH DAMAGE.
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*
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*
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* License 2: Modified BSD
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*
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* Copyright (c) 2014-2016 Advanced Micro Devices, Inc.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are met:
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* * Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* * Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* * Neither the name of Advanced Micro Devices, Inc. nor the
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* names of its contributors may be used to endorse or promote products
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* derived from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL <COPYRIGHT HOLDER> BE LIABLE FOR ANY
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* DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
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* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
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* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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* This file incorporates work covered by the following copyright and
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* permission notice:
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* The Synopsys DWC ETHER XGMAC Software Driver and documentation
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* (hereinafter "Software") is an unsupported proprietary work of Synopsys,
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* Inc. unless otherwise expressly agreed to in writing between Synopsys
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* and you.
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*
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* The Software IS NOT an item of Licensed Software or Licensed Product
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* under any End User Software License Agreement or Agreement for Licensed
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* Product with Synopsys or any supplement thereto. Permission is hereby
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* granted, free of charge, to any person obtaining a copy of this software
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* annotated with this license and the Software, to deal in the Software
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* without restriction, including without limitation the rights to use,
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* copy, modify, merge, publish, distribute, sublicense, and/or sell copies
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* of the Software, and to permit persons to whom the Software is furnished
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* to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included
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* in all copies or substantial portions of the Software.
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*
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* THIS SOFTWARE IS BEING DISTRIBUTED BY SYNOPSYS SOLELY ON AN "AS IS"
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* BASIS AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
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* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
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* PARTICULAR PURPOSE ARE HEREBY DISCLAIMED. IN NO EVENT SHALL SYNOPSYS
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* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
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* THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#include <linux/module.h>
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#include <linux/device.h>
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#include <linux/spinlock.h>
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#include <linux/netdevice.h>
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#include <linux/etherdevice.h>
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#include <linux/io.h>
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#include <linux/notifier.h>
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#include "xgbe.h"
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#include "xgbe-common.h"
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MODULE_AUTHOR("Tom Lendacky <thomas.lendacky@amd.com>");
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MODULE_LICENSE("Dual BSD/GPL");
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MODULE_DESCRIPTION(XGBE_DRV_DESC);
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static int debug = -1;
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module_param(debug, int, 0644);
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MODULE_PARM_DESC(debug, " Network interface message level setting");
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static const u32 default_msg_level = (NETIF_MSG_LINK | NETIF_MSG_IFDOWN |
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NETIF_MSG_IFUP);
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static void xgbe_default_config(struct xgbe_prv_data *pdata)
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{
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DBGPR("-->xgbe_default_config\n");
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pdata->blen = DMA_SBMR_BLEN_64;
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pdata->pbl = DMA_PBL_128;
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pdata->aal = 1;
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pdata->rd_osr_limit = 8;
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pdata->wr_osr_limit = 8;
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pdata->tx_sf_mode = MTL_TSF_ENABLE;
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pdata->tx_threshold = MTL_TX_THRESHOLD_64;
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pdata->tx_osp_mode = DMA_OSP_ENABLE;
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pdata->rx_sf_mode = MTL_RSF_DISABLE;
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pdata->rx_threshold = MTL_RX_THRESHOLD_64;
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pdata->pause_autoneg = 1;
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pdata->tx_pause = 1;
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pdata->rx_pause = 1;
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pdata->phy_speed = SPEED_UNKNOWN;
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pdata->power_down = 0;
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DBGPR("<--xgbe_default_config\n");
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}
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static void xgbe_init_all_fptrs(struct xgbe_prv_data *pdata)
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{
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xgbe_init_function_ptrs_dev(&pdata->hw_if);
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xgbe_init_function_ptrs_phy(&pdata->phy_if);
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xgbe_init_function_ptrs_i2c(&pdata->i2c_if);
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xgbe_init_function_ptrs_desc(&pdata->desc_if);
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pdata->vdata->init_function_ptrs_phy_impl(&pdata->phy_if);
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}
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struct xgbe_prv_data *xgbe_alloc_pdata(struct device *dev)
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{
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struct xgbe_prv_data *pdata;
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struct net_device *netdev;
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netdev = alloc_etherdev_mq(sizeof(struct xgbe_prv_data),
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XGBE_MAX_DMA_CHANNELS);
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if (!netdev) {
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dev_err(dev, "alloc_etherdev_mq failed\n");
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return ERR_PTR(-ENOMEM);
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}
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SET_NETDEV_DEV(netdev, dev);
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pdata = netdev_priv(netdev);
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pdata->netdev = netdev;
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pdata->dev = dev;
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spin_lock_init(&pdata->lock);
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spin_lock_init(&pdata->xpcs_lock);
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mutex_init(&pdata->rss_mutex);
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spin_lock_init(&pdata->tstamp_lock);
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mutex_init(&pdata->i2c_mutex);
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init_completion(&pdata->i2c_complete);
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init_completion(&pdata->mdio_complete);
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pdata->msg_enable = netif_msg_init(debug, default_msg_level);
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set_bit(XGBE_DOWN, &pdata->dev_state);
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set_bit(XGBE_STOPPED, &pdata->dev_state);
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return pdata;
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}
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void xgbe_free_pdata(struct xgbe_prv_data *pdata)
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{
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struct net_device *netdev = pdata->netdev;
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free_netdev(netdev);
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}
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void xgbe_set_counts(struct xgbe_prv_data *pdata)
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{
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/* Set all the function pointers */
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xgbe_init_all_fptrs(pdata);
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/* Populate the hardware features */
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xgbe_get_all_hw_features(pdata);
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/* Set default max values if not provided */
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if (!pdata->tx_max_channel_count)
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pdata->tx_max_channel_count = pdata->hw_feat.tx_ch_cnt;
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if (!pdata->rx_max_channel_count)
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pdata->rx_max_channel_count = pdata->hw_feat.rx_ch_cnt;
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if (!pdata->tx_max_q_count)
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pdata->tx_max_q_count = pdata->hw_feat.tx_q_cnt;
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if (!pdata->rx_max_q_count)
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pdata->rx_max_q_count = pdata->hw_feat.rx_q_cnt;
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/* Calculate the number of Tx and Rx rings to be created
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* -Tx (DMA) Channels map 1-to-1 to Tx Queues so set
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* the number of Tx queues to the number of Tx channels
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* enabled
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* -Rx (DMA) Channels do not map 1-to-1 so use the actual
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* number of Rx queues or maximum allowed
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*/
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pdata->tx_ring_count = min_t(unsigned int, num_online_cpus(),
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pdata->hw_feat.tx_ch_cnt);
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pdata->tx_ring_count = min_t(unsigned int, pdata->tx_ring_count,
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pdata->tx_max_channel_count);
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pdata->tx_ring_count = min_t(unsigned int, pdata->tx_ring_count,
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pdata->tx_max_q_count);
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pdata->tx_q_count = pdata->tx_ring_count;
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pdata->rx_ring_count = min_t(unsigned int, num_online_cpus(),
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pdata->hw_feat.rx_ch_cnt);
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pdata->rx_ring_count = min_t(unsigned int, pdata->rx_ring_count,
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pdata->rx_max_channel_count);
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pdata->rx_q_count = min_t(unsigned int, pdata->hw_feat.rx_q_cnt,
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pdata->rx_max_q_count);
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if (netif_msg_probe(pdata)) {
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dev_dbg(pdata->dev, "TX/RX DMA channel count = %u/%u\n",
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pdata->tx_ring_count, pdata->rx_ring_count);
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dev_dbg(pdata->dev, "TX/RX hardware queue count = %u/%u\n",
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pdata->tx_q_count, pdata->rx_q_count);
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}
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}
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int xgbe_config_netdev(struct xgbe_prv_data *pdata)
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{
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struct net_device *netdev = pdata->netdev;
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struct device *dev = pdata->dev;
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int ret;
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netdev->irq = pdata->dev_irq;
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netdev->base_addr = (unsigned long)pdata->xgmac_regs;
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eth_hw_addr_set(netdev, pdata->mac_addr);
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/* Initialize ECC timestamps */
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pdata->tx_sec_period = jiffies;
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pdata->tx_ded_period = jiffies;
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pdata->rx_sec_period = jiffies;
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pdata->rx_ded_period = jiffies;
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pdata->desc_sec_period = jiffies;
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pdata->desc_ded_period = jiffies;
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/* Issue software reset to device */
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ret = pdata->hw_if.exit(pdata);
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if (ret) {
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dev_err(dev, "software reset failed\n");
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return ret;
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}
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/* Set default configuration data */
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xgbe_default_config(pdata);
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/* Set the DMA mask */
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ret = dma_set_mask_and_coherent(dev,
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DMA_BIT_MASK(pdata->hw_feat.dma_width));
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if (ret) {
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dev_err(dev, "dma_set_mask_and_coherent failed\n");
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return ret;
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}
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/* Set default max values if not provided */
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if (!pdata->tx_max_fifo_size)
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pdata->tx_max_fifo_size = pdata->hw_feat.tx_fifo_size;
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if (!pdata->rx_max_fifo_size)
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pdata->rx_max_fifo_size = pdata->hw_feat.rx_fifo_size;
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/* Set and validate the number of descriptors for a ring */
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BUILD_BUG_ON_NOT_POWER_OF_2(XGBE_TX_DESC_CNT);
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pdata->tx_desc_count = XGBE_TX_DESC_CNT;
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BUILD_BUG_ON_NOT_POWER_OF_2(XGBE_RX_DESC_CNT);
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pdata->rx_desc_count = XGBE_RX_DESC_CNT;
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/* Adjust the number of queues based on interrupts assigned */
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if (pdata->channel_irq_count) {
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pdata->tx_ring_count = min_t(unsigned int, pdata->tx_ring_count,
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pdata->channel_irq_count);
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pdata->rx_ring_count = min_t(unsigned int, pdata->rx_ring_count,
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pdata->channel_irq_count);
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if (netif_msg_probe(pdata))
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dev_dbg(pdata->dev,
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"adjusted TX/RX DMA channel count = %u/%u\n",
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pdata->tx_ring_count, pdata->rx_ring_count);
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}
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/* Initialize RSS hash key */
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netdev_rss_key_fill(pdata->rss_key, sizeof(pdata->rss_key));
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XGMAC_SET_BITS(pdata->rss_options, MAC_RSSCR, IP2TE, 1);
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XGMAC_SET_BITS(pdata->rss_options, MAC_RSSCR, TCP4TE, 1);
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XGMAC_SET_BITS(pdata->rss_options, MAC_RSSCR, UDP4TE, 1);
|
||
|
|
|
||
|
|
/* Call MDIO/PHY initialization routine */
|
||
|
|
pdata->debugfs_an_cdr_workaround = pdata->vdata->an_cdr_workaround;
|
||
|
|
ret = pdata->phy_if.phy_init(pdata);
|
||
|
|
if (ret)
|
||
|
|
return ret;
|
||
|
|
|
||
|
|
/* Set device operations */
|
||
|
|
netdev->netdev_ops = xgbe_get_netdev_ops();
|
||
|
|
netdev->ethtool_ops = xgbe_get_ethtool_ops();
|
||
|
|
#ifdef CONFIG_AMD_XGBE_DCB
|
||
|
|
netdev->dcbnl_ops = xgbe_get_dcbnl_ops();
|
||
|
|
#endif
|
||
|
|
|
||
|
|
/* Set device features */
|
||
|
|
netdev->hw_features = NETIF_F_SG |
|
||
|
|
NETIF_F_IP_CSUM |
|
||
|
|
NETIF_F_IPV6_CSUM |
|
||
|
|
NETIF_F_RXCSUM |
|
||
|
|
NETIF_F_TSO |
|
||
|
|
NETIF_F_TSO6 |
|
||
|
|
NETIF_F_GRO |
|
||
|
|
NETIF_F_HW_VLAN_CTAG_RX |
|
||
|
|
NETIF_F_HW_VLAN_CTAG_TX |
|
||
|
|
NETIF_F_HW_VLAN_CTAG_FILTER;
|
||
|
|
|
||
|
|
if (pdata->hw_feat.rss)
|
||
|
|
netdev->hw_features |= NETIF_F_RXHASH;
|
||
|
|
|
||
|
|
if (pdata->hw_feat.vxn) {
|
||
|
|
netdev->hw_enc_features = NETIF_F_SG |
|
||
|
|
NETIF_F_IP_CSUM |
|
||
|
|
NETIF_F_IPV6_CSUM |
|
||
|
|
NETIF_F_RXCSUM |
|
||
|
|
NETIF_F_TSO |
|
||
|
|
NETIF_F_TSO6 |
|
||
|
|
NETIF_F_GRO |
|
||
|
|
NETIF_F_GSO_UDP_TUNNEL |
|
||
|
|
NETIF_F_GSO_UDP_TUNNEL_CSUM;
|
||
|
|
|
||
|
|
netdev->hw_features |= NETIF_F_GSO_UDP_TUNNEL |
|
||
|
|
NETIF_F_GSO_UDP_TUNNEL_CSUM;
|
||
|
|
|
||
|
|
netdev->udp_tunnel_nic_info = xgbe_get_udp_tunnel_info();
|
||
|
|
}
|
||
|
|
|
||
|
|
netdev->vlan_features |= NETIF_F_SG |
|
||
|
|
NETIF_F_IP_CSUM |
|
||
|
|
NETIF_F_IPV6_CSUM |
|
||
|
|
NETIF_F_TSO |
|
||
|
|
NETIF_F_TSO6;
|
||
|
|
|
||
|
|
netdev->features |= netdev->hw_features;
|
||
|
|
pdata->netdev_features = netdev->features;
|
||
|
|
|
||
|
|
netdev->priv_flags |= IFF_UNICAST_FLT;
|
||
|
|
netdev->min_mtu = 0;
|
||
|
|
netdev->max_mtu = XGMAC_JUMBO_PACKET_MTU;
|
||
|
|
|
||
|
|
/* Use default watchdog timeout */
|
||
|
|
netdev->watchdog_timeo = 0;
|
||
|
|
|
||
|
|
xgbe_init_rx_coalesce(pdata);
|
||
|
|
xgbe_init_tx_coalesce(pdata);
|
||
|
|
|
||
|
|
netif_carrier_off(netdev);
|
||
|
|
ret = register_netdev(netdev);
|
||
|
|
if (ret) {
|
||
|
|
dev_err(dev, "net device registration failed\n");
|
||
|
|
return ret;
|
||
|
|
}
|
||
|
|
|
||
|
|
if (IS_REACHABLE(CONFIG_PTP_1588_CLOCK))
|
||
|
|
xgbe_ptp_register(pdata);
|
||
|
|
|
||
|
|
xgbe_debugfs_init(pdata);
|
||
|
|
|
||
|
|
netif_dbg(pdata, drv, pdata->netdev, "%u Tx software queues\n",
|
||
|
|
pdata->tx_ring_count);
|
||
|
|
netif_dbg(pdata, drv, pdata->netdev, "%u Rx software queues\n",
|
||
|
|
pdata->rx_ring_count);
|
||
|
|
|
||
|
|
return 0;
|
||
|
|
}
|
||
|
|
|
||
|
|
void xgbe_deconfig_netdev(struct xgbe_prv_data *pdata)
|
||
|
|
{
|
||
|
|
struct net_device *netdev = pdata->netdev;
|
||
|
|
|
||
|
|
xgbe_debugfs_exit(pdata);
|
||
|
|
|
||
|
|
if (IS_REACHABLE(CONFIG_PTP_1588_CLOCK))
|
||
|
|
xgbe_ptp_unregister(pdata);
|
||
|
|
|
||
|
|
unregister_netdev(netdev);
|
||
|
|
|
||
|
|
pdata->phy_if.phy_exit(pdata);
|
||
|
|
}
|
||
|
|
|
||
|
|
static int xgbe_netdev_event(struct notifier_block *nb, unsigned long event,
|
||
|
|
void *data)
|
||
|
|
{
|
||
|
|
struct net_device *netdev = netdev_notifier_info_to_dev(data);
|
||
|
|
struct xgbe_prv_data *pdata = netdev_priv(netdev);
|
||
|
|
|
||
|
|
if (netdev->netdev_ops != xgbe_get_netdev_ops())
|
||
|
|
goto out;
|
||
|
|
|
||
|
|
switch (event) {
|
||
|
|
case NETDEV_CHANGENAME:
|
||
|
|
xgbe_debugfs_rename(pdata);
|
||
|
|
break;
|
||
|
|
|
||
|
|
default:
|
||
|
|
break;
|
||
|
|
}
|
||
|
|
|
||
|
|
out:
|
||
|
|
return NOTIFY_DONE;
|
||
|
|
}
|
||
|
|
|
||
|
|
static struct notifier_block xgbe_netdev_notifier = {
|
||
|
|
.notifier_call = xgbe_netdev_event,
|
||
|
|
};
|
||
|
|
|
||
|
|
static int __init xgbe_mod_init(void)
|
||
|
|
{
|
||
|
|
int ret;
|
||
|
|
|
||
|
|
ret = register_netdevice_notifier(&xgbe_netdev_notifier);
|
||
|
|
if (ret)
|
||
|
|
return ret;
|
||
|
|
|
||
|
|
ret = xgbe_platform_init();
|
||
|
|
if (ret)
|
||
|
|
goto err_platform_init;
|
||
|
|
|
||
|
|
ret = xgbe_pci_init();
|
||
|
|
if (ret)
|
||
|
|
goto err_pci_init;
|
||
|
|
|
||
|
|
return 0;
|
||
|
|
|
||
|
|
err_pci_init:
|
||
|
|
xgbe_platform_exit();
|
||
|
|
err_platform_init:
|
||
|
|
unregister_netdevice_notifier(&xgbe_netdev_notifier);
|
||
|
|
return ret;
|
||
|
|
}
|
||
|
|
|
||
|
|
static void __exit xgbe_mod_exit(void)
|
||
|
|
{
|
||
|
|
xgbe_pci_exit();
|
||
|
|
|
||
|
|
xgbe_platform_exit();
|
||
|
|
|
||
|
|
unregister_netdevice_notifier(&xgbe_netdev_notifier);
|
||
|
|
}
|
||
|
|
|
||
|
|
module_init(xgbe_mod_init);
|
||
|
|
module_exit(xgbe_mod_exit);
|