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/*
* 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 <linux/notifier.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, 0644);
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->blen = DMA_SBMR_BLEN_64;
pdata->pbl = DMA_PBL_128;
pdata->aal = 1;
pdata->rd_osr_limit = 8;
pdata->wr_osr_limit = 8;
pdata->tx_sf_mode = MTL_TSF_ENABLE;
pdata->tx_threshold = MTL_TX_THRESHOLD_64;
pdata->tx_osp_mode = DMA_OSP_ENABLE;
pdata->rx_sf_mode = MTL_RSF_DISABLE;
pdata->rx_threshold = MTL_RX_THRESHOLD_64;
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");
}
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);
}
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);
INIT_LIST_HEAD(&pdata->vxlan_ports);
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;
}
void xgbe_free_pdata(struct xgbe_prv_data *pdata)
{
struct net_device *netdev = pdata->netdev;
free_netdev(netdev);
}
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);
}
}
int xgbe_config_netdev(struct xgbe_prv_data *pdata)
{
struct net_device *netdev = pdata->netdev;
struct device *dev = pdata->dev;
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 */
ret = pdata->hw_if.exit(pdata);
if (ret) {
dev_err(dev, "software reset failed\n");
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