2 * AMD 10Gb Ethernet driver
4 * This file is available to you under your choice of the following two
9 * Copyright (c) 2014 Advanced Micro Devices, Inc.
11 * This file is free software; you may copy, redistribute and/or modify
12 * it under the terms of the GNU General Public License as published by
13 * the Free Software Foundation, either version 2 of the License, or (at
14 * your option) any later version.
16 * This file is distributed in the hope that it will be useful, but
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18 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
19 * General Public License for more details.
21 * You should have received a copy of the GNU General Public License
22 * along with this program. If not, see <http://www.gnu.org/licenses/>.
24 * This file incorporates work covered by the following copyright and
26 * The Synopsys DWC ETHER XGMAC Software Driver and documentation
27 * (hereinafter "Software") is an unsupported proprietary work of Synopsys,
28 * Inc. unless otherwise expressly agreed to in writing between Synopsys
31 * The Software IS NOT an item of Licensed Software or Licensed Product
32 * under any End User Software License Agreement or Agreement for Licensed
33 * Product with Synopsys or any supplement thereto. Permission is hereby
34 * granted, free of charge, to any person obtaining a copy of this software
35 * annotated with this license and the Software, to deal in the Software
36 * without restriction, including without limitation the rights to use,
37 * copy, modify, merge, publish, distribute, sublicense, and/or sell copies
38 * of the Software, and to permit persons to whom the Software is furnished
39 * to do so, subject to the following conditions:
41 * The above copyright notice and this permission notice shall be included
42 * in all copies or substantial portions of the Software.
44 * THIS SOFTWARE IS BEING DISTRIBUTED BY SYNOPSYS SOLELY ON AN "AS IS"
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46 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
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49 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
50 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
51 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
52 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
53 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
54 * THE POSSIBILITY OF SUCH DAMAGE.
57 * License 2: Modified BSD
59 * Copyright (c) 2014 Advanced Micro Devices, Inc.
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78 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
79 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
80 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
81 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
82 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
84 * This file incorporates work covered by the following copyright and
86 * The Synopsys DWC ETHER XGMAC Software Driver and documentation
87 * (hereinafter "Software") is an unsupported proprietary work of Synopsys,
88 * Inc. unless otherwise expressly agreed to in writing between Synopsys
91 * The Software IS NOT an item of Licensed Software or Licensed Product
92 * under any End User Software License Agreement or Agreement for Licensed
93 * Product with Synopsys or any supplement thereto. Permission is hereby
94 * granted, free of charge, to any person obtaining a copy of this software
95 * annotated with this license and the Software, to deal in the Software
96 * without restriction, including without limitation the rights to use,
97 * copy, modify, merge, publish, distribute, sublicense, and/or sell copies
98 * of the Software, and to permit persons to whom the Software is furnished
99 * to do so, subject to the following conditions:
101 * The above copyright notice and this permission notice shall be included
102 * in all copies or substantial portions of the Software.
104 * THIS SOFTWARE IS BEING DISTRIBUTED BY SYNOPSYS SOLELY ON AN "AS IS"
105 * BASIS AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
106 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
107 * PARTICULAR PURPOSE ARE HEREBY DISCLAIMED. IN NO EVENT SHALL SYNOPSYS
108 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
109 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
110 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
111 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
112 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
113 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
114 * THE POSSIBILITY OF SUCH DAMAGE.
117 #include <linux/netdevice.h>
118 #include <net/dcbnl.h>
121 #include "xgbe-common.h"
124 static int xgbe_dcb_ieee_getets(struct net_device *netdev,
125 struct ieee_ets *ets)
127 struct xgbe_prv_data *pdata = netdev_priv(netdev);
129 /* Set number of supported traffic classes */
130 ets->ets_cap = pdata->hw_feat.tc_cnt;
133 ets->cbs = pdata->ets->cbs;
134 memcpy(ets->tc_tx_bw, pdata->ets->tc_tx_bw,
135 sizeof(ets->tc_tx_bw));
136 memcpy(ets->tc_tsa, pdata->ets->tc_tsa,
137 sizeof(ets->tc_tsa));
138 memcpy(ets->prio_tc, pdata->ets->prio_tc,
139 sizeof(ets->prio_tc));
145 static int xgbe_dcb_ieee_setets(struct net_device *netdev,
146 struct ieee_ets *ets)
148 struct xgbe_prv_data *pdata = netdev_priv(netdev);
149 unsigned int i, tc_ets, tc_ets_weight;
153 for (i = 0; i < IEEE_8021QAZ_MAX_TCS; i++) {
154 DBGPR(" TC%u: tx_bw=%hhu, rx_bw=%hhu, tsa=%hhu\n", i,
155 ets->tc_tx_bw[i], ets->tc_rx_bw[i], ets->tc_tsa[i]);
156 DBGPR(" PRIO%u: TC=%hhu\n", i, ets->prio_tc[i]);
158 if ((ets->tc_tx_bw[i] || ets->tc_tsa[i]) &&
159 (i >= pdata->hw_feat.tc_cnt))
162 if (ets->prio_tc[i] >= pdata->hw_feat.tc_cnt)
165 switch (ets->tc_tsa[i]) {
166 case IEEE_8021QAZ_TSA_STRICT:
168 case IEEE_8021QAZ_TSA_ETS:
170 tc_ets_weight += ets->tc_tx_bw[i];
178 /* Weights must add up to 100% */
179 if (tc_ets && (tc_ets_weight != 100))
183 pdata->ets = devm_kzalloc(pdata->dev, sizeof(*pdata->ets),
189 memcpy(pdata->ets, ets, sizeof(*pdata->ets));
191 pdata->hw_if.config_dcb_tc(pdata);
196 static int xgbe_dcb_ieee_getpfc(struct net_device *netdev,
197 struct ieee_pfc *pfc)
199 struct xgbe_prv_data *pdata = netdev_priv(netdev);
201 /* Set number of supported PFC traffic classes */
202 pfc->pfc_cap = pdata->hw_feat.tc_cnt;
205 pfc->pfc_en = pdata->pfc->pfc_en;
206 pfc->mbc = pdata->pfc->mbc;
207 pfc->delay = pdata->pfc->delay;
213 static int xgbe_dcb_ieee_setpfc(struct net_device *netdev,
214 struct ieee_pfc *pfc)
216 struct xgbe_prv_data *pdata = netdev_priv(netdev);
218 DBGPR(" cap=%hhu, en=%hhx, mbc=%hhu, delay=%hhu\n",
219 pfc->pfc_cap, pfc->pfc_en, pfc->mbc, pfc->delay);
222 pdata->pfc = devm_kzalloc(pdata->dev, sizeof(*pdata->pfc),
228 memcpy(pdata->pfc, pfc, sizeof(*pdata->pfc));
230 pdata->hw_if.config_dcb_pfc(pdata);
235 static u8 xgbe_dcb_getdcbx(struct net_device *netdev)
237 return DCB_CAP_DCBX_HOST | DCB_CAP_DCBX_VER_IEEE;
240 static u8 xgbe_dcb_setdcbx(struct net_device *netdev, u8 dcbx)
242 u8 support = xgbe_dcb_getdcbx(netdev);
244 DBGPR(" DCBX=%#hhx\n", dcbx);
249 if ((dcbx & support) != support)
255 static const struct dcbnl_rtnl_ops xgbe_dcbnl_ops = {
256 /* IEEE 802.1Qaz std */
257 .ieee_getets = xgbe_dcb_ieee_getets,
258 .ieee_setets = xgbe_dcb_ieee_setets,
259 .ieee_getpfc = xgbe_dcb_ieee_getpfc,
260 .ieee_setpfc = xgbe_dcb_ieee_setpfc,
262 /* DCBX configuration */
263 .getdcbx = xgbe_dcb_getdcbx,
264 .setdcbx = xgbe_dcb_setdcbx,
267 const struct dcbnl_rtnl_ops *xgbe_get_dcbnl_ops(void)
269 return &xgbe_dcbnl_ops;