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