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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 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 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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+
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+#include <linux/netdevice.h>
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+#include <net/dcbnl.h>
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+
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+#include "xgbe.h"
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+#include "xgbe-common.h"
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+
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+
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+static int xgbe_dcb_ieee_getets(struct net_device *netdev,
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+ struct ieee_ets *ets)
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+{
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+ struct xgbe_prv_data *pdata = netdev_priv(netdev);
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+
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+ /* Set number of supported traffic classes */
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+ ets->ets_cap = pdata->hw_feat.tc_cnt;
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+
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+ if (pdata->ets) {
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+ ets->cbs = pdata->ets->cbs;
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+ memcpy(ets->tc_tx_bw, pdata->ets->tc_tx_bw,
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+ sizeof(ets->tc_tx_bw));
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+ memcpy(ets->tc_tsa, pdata->ets->tc_tsa,
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+ sizeof(ets->tc_tsa));
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+ memcpy(ets->prio_tc, pdata->ets->prio_tc,
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+ sizeof(ets->prio_tc));
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+ }
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+
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+ return 0;
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+}
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+
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+static int xgbe_dcb_ieee_setets(struct net_device *netdev,
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+ struct ieee_ets *ets)
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+{
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+ struct xgbe_prv_data *pdata = netdev_priv(netdev);
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+ unsigned int i, tc_ets, tc_ets_weight;
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+
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+ tc_ets = 0;
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+ tc_ets_weight = 0;
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+ for (i = 0; i < IEEE_8021QAZ_MAX_TCS; i++) {
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+ DBGPR(" TC%u: tx_bw=%hhu, rx_bw=%hhu, tsa=%hhu\n", i,
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+ ets->tc_tx_bw[i], ets->tc_rx_bw[i], ets->tc_tsa[i]);
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+ DBGPR(" PRIO%u: TC=%hhu\n", i, ets->prio_tc[i]);
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+
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+ if ((ets->tc_tx_bw[i] || ets->tc_tsa[i]) &&
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+ (i >= pdata->hw_feat.tc_cnt))
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+ return -EINVAL;
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+
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+ if (ets->prio_tc[i] >= pdata->hw_feat.tc_cnt)
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+ return -EINVAL;
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+
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+ switch (ets->tc_tsa[i]) {
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+ case IEEE_8021QAZ_TSA_STRICT:
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+ break;
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+ case IEEE_8021QAZ_TSA_ETS:
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+ tc_ets = 1;
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+ tc_ets_weight += ets->tc_tx_bw[i];
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+ break;
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+
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+ default:
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+ return -EINVAL;
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+ }
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+ }
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+
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+ /* Weights must add up to 100% */
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+ if (tc_ets && (tc_ets_weight != 100))
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+ return -EINVAL;
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+
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+ if (!pdata->ets) {
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+ pdata->ets = devm_kzalloc(pdata->dev, sizeof(*pdata->ets),
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+ GFP_KERNEL);
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+ if (!pdata->ets)
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+ return -ENOMEM;
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+ }
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+
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+ memcpy(pdata->ets, ets, sizeof(*pdata->ets));
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+
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+ pdata->hw_if.config_dcb_tc(pdata);
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+
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+ return 0;
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+}
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+
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+static int xgbe_dcb_ieee_getpfc(struct net_device *netdev,
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+ struct ieee_pfc *pfc)
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+{
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+ struct xgbe_prv_data *pdata = netdev_priv(netdev);
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+
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+ /* Set number of supported PFC traffic classes */
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+ pfc->pfc_cap = pdata->hw_feat.tc_cnt;
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+
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+ if (pdata->pfc) {
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+ pfc->pfc_en = pdata->pfc->pfc_en;
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+ pfc->mbc = pdata->pfc->mbc;
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+ pfc->delay = pdata->pfc->delay;
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+ }
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+
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+ return 0;
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+}
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+
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+static int xgbe_dcb_ieee_setpfc(struct net_device *netdev,
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+ struct ieee_pfc *pfc)
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+{
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+ struct xgbe_prv_data *pdata = netdev_priv(netdev);
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+
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+ DBGPR(" cap=%hhu, en=%hhx, mbc=%hhu, delay=%hhu\n",
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+ pfc->pfc_cap, pfc->pfc_en, pfc->mbc, pfc->delay);
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+
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+ if (!pdata->pfc) {
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+ pdata->pfc = devm_kzalloc(pdata->dev, sizeof(*pdata->pfc),
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+ GFP_KERNEL);
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+ if (!pdata->pfc)
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+ return -ENOMEM;
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+ }
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+
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+ memcpy(pdata->pfc, pfc, sizeof(*pdata->pfc));
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+
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+ pdata->hw_if.config_dcb_pfc(pdata);
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+
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+ return 0;
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+}
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+
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+static u8 xgbe_dcb_getdcbx(struct net_device *netdev)
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+{
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+ return DCB_CAP_DCBX_HOST | DCB_CAP_DCBX_VER_IEEE;
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+}
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+
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+static u8 xgbe_dcb_setdcbx(struct net_device *netdev, u8 dcbx)
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+{
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+ u8 support = xgbe_dcb_getdcbx(netdev);
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+
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+ DBGPR(" DCBX=%#hhx\n", dcbx);
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+
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+ if (dcbx & ~support)
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+ return 1;
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+
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+ if ((dcbx & support) != support)
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+ return 1;
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+
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+ return 0;
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+}
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+
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+static const struct dcbnl_rtnl_ops xgbe_dcbnl_ops = {
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+ /* IEEE 802.1Qaz std */
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+ .ieee_getets = xgbe_dcb_ieee_getets,
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+ .ieee_setets = xgbe_dcb_ieee_setets,
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+ .ieee_getpfc = xgbe_dcb_ieee_getpfc,
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+ .ieee_setpfc = xgbe_dcb_ieee_setpfc,
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+
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+ /* DCBX configuration */
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+ .getdcbx = xgbe_dcb_getdcbx,
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+ .setdcbx = xgbe_dcb_setdcbx,
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+};
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+
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+const struct dcbnl_rtnl_ops *xgbe_get_dcbnl_ops(void)
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+{
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+ return &xgbe_dcbnl_ops;
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+}
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Lendacky, Thomas