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
17 * WITHOUT ANY WARRANTY; without even the implied warranty of
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"
45 * BASIS AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
46 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
47 * PARTICULAR PURPOSE ARE HEREBY DISCLAIMED. IN NO EVENT SHALL SYNOPSYS
48 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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.
60 * All rights reserved.
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63 * modification, are permitted provided that the following conditions are met:
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73 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
74 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
75 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
76 * ARE DISCLAIMED. IN NO EVENT SHALL <COPYRIGHT HOLDER> BE LIABLE FOR ANY
77 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
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"
123 static int xgbe_dcb_ieee_getets(struct net_device
*netdev
,
124 struct ieee_ets
*ets
)
126 struct xgbe_prv_data
*pdata
= netdev_priv(netdev
);
128 /* Set number of supported traffic classes */
129 ets
->ets_cap
= pdata
->hw_feat
.tc_cnt
;
132 ets
->cbs
= pdata
->ets
->cbs
;
133 memcpy(ets
->tc_tx_bw
, pdata
->ets
->tc_tx_bw
,
134 sizeof(ets
->tc_tx_bw
));
135 memcpy(ets
->tc_tsa
, pdata
->ets
->tc_tsa
,
136 sizeof(ets
->tc_tsa
));
137 memcpy(ets
->prio_tc
, pdata
->ets
->prio_tc
,
138 sizeof(ets
->prio_tc
));
144 static int xgbe_dcb_ieee_setets(struct net_device
*netdev
,
145 struct ieee_ets
*ets
)
147 struct xgbe_prv_data
*pdata
= netdev_priv(netdev
);
148 unsigned int i
, tc_ets
, tc_ets_weight
;
152 for (i
= 0; i
< IEEE_8021QAZ_MAX_TCS
; i
++) {
153 DBGPR(" TC%u: tx_bw=%hhu, rx_bw=%hhu, tsa=%hhu\n", i
,
154 ets
->tc_tx_bw
[i
], ets
->tc_rx_bw
[i
], ets
->tc_tsa
[i
]);
155 DBGPR(" PRIO%u: TC=%hhu\n", i
, ets
->prio_tc
[i
]);
157 if ((ets
->tc_tx_bw
[i
] || ets
->tc_tsa
[i
]) &&
158 (i
>= pdata
->hw_feat
.tc_cnt
))
161 if (ets
->prio_tc
[i
] >= pdata
->hw_feat
.tc_cnt
)
164 switch (ets
->tc_tsa
[i
]) {
165 case IEEE_8021QAZ_TSA_STRICT
:
167 case IEEE_8021QAZ_TSA_ETS
:
169 tc_ets_weight
+= ets
->tc_tx_bw
[i
];
177 /* Weights must add up to 100% */
178 if (tc_ets
&& (tc_ets_weight
!= 100))
182 pdata
->ets
= devm_kzalloc(pdata
->dev
, sizeof(*pdata
->ets
),
188 memcpy(pdata
->ets
, ets
, sizeof(*pdata
->ets
));
190 pdata
->hw_if
.config_dcb_tc(pdata
);
195 static int xgbe_dcb_ieee_getpfc(struct net_device
*netdev
,
196 struct ieee_pfc
*pfc
)
198 struct xgbe_prv_data
*pdata
= netdev_priv(netdev
);
200 /* Set number of supported PFC traffic classes */
201 pfc
->pfc_cap
= pdata
->hw_feat
.tc_cnt
;
204 pfc
->pfc_en
= pdata
->pfc
->pfc_en
;
205 pfc
->mbc
= pdata
->pfc
->mbc
;
206 pfc
->delay
= pdata
->pfc
->delay
;
212 static int xgbe_dcb_ieee_setpfc(struct net_device
*netdev
,
213 struct ieee_pfc
*pfc
)
215 struct xgbe_prv_data
*pdata
= netdev_priv(netdev
);
217 DBGPR(" cap=%hhu, en=%hhx, mbc=%hhu, delay=%hhu\n",
218 pfc
->pfc_cap
, pfc
->pfc_en
, pfc
->mbc
, pfc
->delay
);
221 pdata
->pfc
= devm_kzalloc(pdata
->dev
, sizeof(*pdata
->pfc
),
227 memcpy(pdata
->pfc
, pfc
, sizeof(*pdata
->pfc
));
229 pdata
->hw_if
.config_dcb_pfc(pdata
);
234 static u8
xgbe_dcb_getdcbx(struct net_device
*netdev
)
236 return DCB_CAP_DCBX_HOST
| DCB_CAP_DCBX_VER_IEEE
;
239 static u8
xgbe_dcb_setdcbx(struct net_device
*netdev
, u8 dcbx
)
241 u8 support
= xgbe_dcb_getdcbx(netdev
);
243 DBGPR(" DCBX=%#hhx\n", dcbx
);
248 if ((dcbx
& support
) != support
)
254 static const struct dcbnl_rtnl_ops xgbe_dcbnl_ops
= {
255 /* IEEE 802.1Qaz std */
256 .ieee_getets
= xgbe_dcb_ieee_getets
,
257 .ieee_setets
= xgbe_dcb_ieee_setets
,
258 .ieee_getpfc
= xgbe_dcb_ieee_getpfc
,
259 .ieee_setpfc
= xgbe_dcb_ieee_setpfc
,
261 /* DCBX configuration */
262 .getdcbx
= xgbe_dcb_getdcbx
,
263 .setdcbx
= xgbe_dcb_setdcbx
,
266 const struct dcbnl_rtnl_ops
*xgbe_get_dcbnl_ops(void)
268 return &xgbe_dcbnl_ops
;