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Release 4.11 drivers/net/ethernet/amd/xgbe/xgbe-main.c

/*
 * AMD 10Gb Ethernet driver
 *
 * This file is available to you under your choice of the following two
 * licenses:
 *
 * License 1: GPLv2
 *
 * Copyright (c) 2014-2016 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 <http://www.gnu.org/licenses/>.
 *
 * 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) 2014-2016 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 <COPYRIGHT HOLDER> 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 <linux/module.h>
#include <linux/device.h>
#include <linux/spinlock.h>
#include <linux/netdevice.h>
#include <linux/etherdevice.h>
#include <linux/io.h>

#include "xgbe.h"
#include "xgbe-common.h"

MODULE_AUTHOR("Tom Lendacky <thomas.lendacky@amd.com>");
MODULE_LICENSE("Dual BSD/GPL");

MODULE_VERSION(XGBE_DRV_VERSION);

MODULE_DESCRIPTION(XGBE_DRV_DESC);


static int debug = -1;
module_param(debug, int, S_IWUSR | S_IRUGO);
MODULE_PARM_DESC(debug, " Network interface message level setting");


static const u32 default_msg_level = (NETIF_MSG_LINK | NETIF_MSG_IFDOWN |
				      NETIF_MSG_IFUP);


static void xgbe_default_config(struct xgbe_prv_data *pdata) { DBGPR("-->xgbe_default_config\n"); pdata->pblx8 = DMA_PBL_X8_ENABLE; pdata->tx_sf_mode = MTL_TSF_ENABLE; pdata->tx_threshold = MTL_TX_THRESHOLD_64; pdata->tx_pbl = DMA_PBL_16; pdata->tx_osp_mode = DMA_OSP_ENABLE; pdata->rx_sf_mode = MTL_RSF_DISABLE; pdata->rx_threshold = MTL_RX_THRESHOLD_64; pdata->rx_pbl = DMA_PBL_16; pdata->pause_autoneg = 1; pdata->tx_pause = 1; pdata->rx_pause = 1; pdata->phy_speed = SPEED_UNKNOWN; pdata->power_down = 0; DBGPR("<--xgbe_default_config\n"); }

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Tom Lendacky99100.00%2100.00%
Total99100.00%2100.00%


static void xgbe_init_all_fptrs(struct xgbe_prv_data *pdata) { xgbe_init_function_ptrs_dev(&pdata->hw_if); xgbe_init_function_ptrs_phy(&pdata->phy_if); xgbe_init_function_ptrs_i2c(&pdata->i2c_if); xgbe_init_function_ptrs_desc(&pdata->desc_if); pdata->vdata->init_function_ptrs_phy_impl(&pdata->phy_if); }

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Tom Lendacky55100.00%4100.00%
Total55100.00%4100.00%


struct xgbe_prv_data *xgbe_alloc_pdata(struct device *dev) { struct xgbe_prv_data *pdata; struct net_device *netdev; netdev = alloc_etherdev_mq(sizeof(struct xgbe_prv_data), XGBE_MAX_DMA_CHANNELS); if (!netdev) { dev_err(dev, "alloc_etherdev_mq failed\n"); return ERR_PTR(-ENOMEM); } SET_NETDEV_DEV(netdev, dev); pdata = netdev_priv(netdev); pdata->netdev = netdev; pdata->dev = dev; spin_lock_init(&pdata->lock); spin_lock_init(&pdata->xpcs_lock); mutex_init(&pdata->rss_mutex); spin_lock_init(&pdata->tstamp_lock); mutex_init(&pdata->i2c_mutex); init_completion(&pdata->i2c_complete); init_completion(&pdata->mdio_complete); pdata->msg_enable = netif_msg_init(debug, default_msg_level); set_bit(XGBE_DOWN, &pdata->dev_state); set_bit(XGBE_STOPPED, &pdata->dev_state); return pdata; }

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Tom Lendacky172100.00%6100.00%
Total172100.00%6100.00%


void xgbe_free_pdata(struct xgbe_prv_data *pdata) { struct net_device *netdev = pdata->netdev; free_netdev(netdev); }

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Tom Lendacky24100.00%3100.00%
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void xgbe_set_counts(struct xgbe_prv_data *pdata) { /* Set all the function pointers */ xgbe_init_all_fptrs(pdata); /* Populate the hardware features */ xgbe_get_all_hw_features(pdata); /* Set default max values if not provided */ if (!pdata->tx_max_channel_count) pdata->tx_max_channel_count = pdata->hw_feat.tx_ch_cnt; if (!pdata->rx_max_channel_count) pdata->rx_max_channel_count = pdata->hw_feat.rx_ch_cnt; if (!pdata->tx_max_q_count) pdata->tx_max_q_count = pdata->hw_feat.tx_q_cnt; if (!pdata->rx_max_q_count) pdata->rx_max_q_count = pdata->hw_feat.rx_q_cnt; /* Calculate the number of Tx and Rx rings to be created * -Tx (DMA) Channels map 1-to-1 to Tx Queues so set * the number of Tx queues to the number of Tx channels * enabled * -Rx (DMA) Channels do not map 1-to-1 so use the actual * number of Rx queues or maximum allowed */ pdata->tx_ring_count = min_t(unsigned int, num_online_cpus(), pdata->hw_feat.tx_ch_cnt); pdata->tx_ring_count = min_t(unsigned int, pdata->tx_ring_count, pdata->tx_max_channel_count); pdata->tx_ring_count = min_t(unsigned int, pdata->tx_ring_count, pdata->tx_max_q_count); pdata->tx_q_count = pdata->tx_ring_count; pdata->rx_ring_count = min_t(unsigned int, num_online_cpus(), pdata->hw_feat.rx_ch_cnt); pdata->rx_ring_count = min_t(unsigned int, pdata->rx_ring_count, pdata->rx_max_channel_count); pdata->rx_q_count = min_t(unsigned int, pdata->hw_feat.rx_q_cnt, pdata->rx_max_q_count); if (netif_msg_probe(pdata)) { dev_dbg(pdata->dev, "TX/RX DMA channel count = %u/%u\n", pdata->tx_ring_count, pdata->rx_ring_count); dev_dbg(pdata->dev, "TX/RX hardware queue count = %u/%u\n", pdata->tx_q_count, pdata->rx_q_count); } }

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Tom Lendacky221100.00%6100.00%
Total221100.00%6100.00%


int xgbe_config_netdev(struct xgbe_prv_data *pdata) { struct net_device *netdev = pdata->netdev; struct device *dev = pdata->dev; unsigned int i; int ret; netdev->irq = pdata->dev_irq; netdev->base_addr = (unsigned long)pdata->xgmac_regs; memcpy(netdev->dev_addr, pdata->mac_addr, netdev->addr_len); /* Initialize ECC timestamps */ pdata->tx_sec_period = jiffies; pdata->tx_ded_period = jiffies; pdata->rx_sec_period = jiffies; pdata->rx_ded_period = jiffies; pdata->desc_sec_period = jiffies; pdata->desc_ded_period = jiffies; /* Issue software reset to device */ pdata->hw_if.exit(pdata); /* Set default configuration data */ xgbe_default_config(pdata); /* Set the DMA mask */ ret = dma_set_mask_and_coherent(dev, DMA_BIT_MASK(pdata->hw_feat.dma_width)); if (ret) { dev_err(dev, "dma_set_mask_and_coherent failed\n"); return ret; } /* Set default max values if not provided */ if (!pdata->tx_max_fifo_size) pdata->tx_max_fifo_size = pdata->hw_feat.tx_fifo_size; if (!pdata->rx_max_fifo_size) pdata->rx_max_fifo_size = pdata->hw_feat.rx_fifo_size; /* Set and validate the number of descriptors for a ring */ BUILD_BUG_ON_NOT_POWER_OF_2(XGBE_TX_DESC_CNT); pdata->tx_desc_count = XGBE_TX_DESC_CNT; BUILD_BUG_ON_NOT_POWER_OF_2(XGBE_RX_DESC_CNT); pdata->rx_desc_count = XGBE_RX_DESC_CNT; /* Adjust the number of queues based on interrupts assigned */ if (pdata->channel_irq_count) { pdata->tx_ring_count = min_t(unsigned int, pdata->tx_ring_count, pdata->channel_irq_count); pdata->rx_ring_count = min_t(unsigned int, pdata->rx_ring_count, pdata->channel_irq_count); if (netif_msg_probe(pdata)) dev_dbg(pdata->dev, "adjusted TX/RX DMA channel count = %u/%u\n", pdata->tx_ring_count, pdata->rx_ring_count); } /* Set the number of queues */ ret = netif_set_real_num_tx_queues(netdev, pdata->tx_ring_count); if (ret) { dev_err(dev, "error setting real tx queue count\n"); return ret; } ret = netif_set_real_num_rx_queues(netdev, pdata->rx_ring_count); if (ret) { dev_err(dev, "error setting real rx queue count\n"); return ret; } /* Initialize RSS hash key and lookup table */ netdev_rss_key_fill(pdata->rss_key, sizeof(pdata->rss_key)); for (i = 0; i < XGBE_RSS_MAX_TABLE_SIZE; i++) XGMAC_SET_BITS(pdata->rss_table[i], MAC_RSSDR, DMCH, i % pdata->rx_ring_count); XGMAC_SET_BITS(pdata->rss_options, MAC_RSSCR, IP2TE, 1); XGMAC_SET_BITS(pdata->rss_options, MAC_RSSCR, TCP4TE, 1); XGMAC_SET_BITS(pdata->rss_options, MAC_RSSCR, UDP4TE, 1); /* Call MDIO/PHY initialization routine */ 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; 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; } /* Create the PHY/ANEG name based on netdev name */ snprintf(pdata->an_name, sizeof(pdata->an_name) - 1, "%s-pcs", netdev_name(netdev)); /* Create the ECC name based on netdev name */ snprintf(pdata->ecc_name, sizeof(pdata->ecc_name) - 1, "%s-ecc", netdev_name(netdev)); /* Create the I2C name based on netdev name */ snprintf(pdata->i2c_name, sizeof(pdata->i2c_name) - 1, "%s-i2c", netdev_name(netdev)); /* Create workqueues */ pdata->dev_workqueue = create_singlethread_workqueue(netdev_name(netdev)); if (!pdata->dev_workqueue) { netdev_err(netdev, "device workqueue creation failed\n"); ret = -ENOMEM; goto err_netdev; } pdata->an_workqueue = create_singlethread_workqueue(pdata->an_name); if (!pdata->an_workqueue) { netdev_err(netdev, "phy workqueue creation failed\n"); ret = -ENOMEM; goto err_wq; } 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; err_wq: destroy_workqueue(pdata->dev_workqueue); err_netdev: unregister_netdev(netdev); return ret; }

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PersonTokensPropCommitsCommitProp
Tom Lendacky77395.43%1976.00%
Jarod Wilson121.48%14.00%
Suravee Suthikulpanit101.23%14.00%
Wei Yongjun70.86%28.00%
Nico Pitre70.86%14.00%
Eric Dumazet10.12%14.00%
Total810100.00%25100.00%


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); pdata->phy_if.phy_exit(pdata); flush_workqueue(pdata->an_workqueue); destroy_workqueue(pdata->an_workqueue); flush_workqueue(pdata->dev_workqueue); destroy_workqueue(pdata->dev_workqueue); unregister_netdev(netdev); }

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Tom Lendacky7191.03%360.00%
James Morse56.41%120.00%
Linus Torvalds22.56%120.00%
Total78100.00%5100.00%


static int __init xgbe_mod_init(void) { int ret; ret = xgbe_platform_init(); if (ret) return ret; ret = xgbe_pci_init(); if (ret) return ret; return 0; }

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Tom Lendacky39100.00%4100.00%
Total39100.00%4100.00%


static void __exit xgbe_mod_exit(void) { xgbe_pci_exit(); xgbe_platform_exit(); }

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Tom Lendacky15100.00%3100.00%
Total15100.00%3100.00%

module_init(xgbe_mod_init); module_exit(xgbe_mod_exit);

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PersonTokensPropCommitsCommitProp
Tom Lendacky156297.26%2475.00%
Jarod Wilson120.75%13.12%
Suravee Suthikulpanit100.62%13.12%
Wei Yongjun70.44%26.25%
Nico Pitre70.44%13.12%
James Morse50.31%13.12%
Linus Torvalds20.12%13.12%
Eric Dumazet10.06%13.12%
Total1606100.00%32100.00%
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