1 /*
2 * AMD 10Gb Ethernet driver
3 *
4 * Copyright (c) 2014-2016,2020 Advanced Micro Devices, Inc.
5 *
6 * This file is available to you under your choice of the following two
7 * licenses:
8 *
9 * License 1: GPLv2
10 *
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.
15 *
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.
20 *
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/>.
23 *
24 * This file incorporates work covered by the following copyright and
25 * permission notice:
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
29 * and you.
30 *
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:
40 *
41 * The above copyright notice and this permission notice shall be included
42 * in all copies or substantial portions of the Software.
43 *
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.
55 *
56 *
57 * License 2: Modified BSD
58 *
59 * Redistribution and use in source and binary forms, with or without
60 * modification, are permitted provided that the following conditions are met:
61 * * Redistributions of source code must retain the above copyright
62 * notice, this list of conditions and the following disclaimer.
63 * * Redistributions in binary form must reproduce the above copyright
64 * notice, this list of conditions and the following disclaimer in the
65 * documentation and/or other materials provided with the distribution.
66 * * Neither the name of Advanced Micro Devices, Inc. nor the
67 * names of its contributors may be used to endorse or promote products
68 * derived from this software without specific prior written permission.
69 *
70 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
71 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
72 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
73 * ARE DISCLAIMED. IN NO EVENT SHALL <COPYRIGHT HOLDER> BE LIABLE FOR ANY
74 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
75 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
76 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
77 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
78 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
79 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
80 *
81 * This file incorporates work covered by the following copyright and
82 * permission notice:
83 * The Synopsys DWC ETHER XGMAC Software Driver and documentation
84 * (hereinafter "Software") is an unsupported proprietary work of Synopsys,
85 * Inc. unless otherwise expressly agreed to in writing between Synopsys
86 * and you.
87 *
88 * The Software IS NOT an item of Licensed Software or Licensed Product
89 * under any End User Software License Agreement or Agreement for Licensed
90 * Product with Synopsys or any supplement thereto. Permission is hereby
91 * granted, free of charge, to any person obtaining a copy of this software
92 * annotated with this license and the Software, to deal in the Software
93 * without restriction, including without limitation the rights to use,
94 * copy, modify, merge, publish, distribute, sublicense, and/or sell copies
95 * of the Software, and to permit persons to whom the Software is furnished
96 * to do so, subject to the following conditions:
97 *
98 * The above copyright notice and this permission notice shall be included
99 * in all copies or substantial portions of the Software.
100 *
101 * THIS SOFTWARE IS BEING DISTRIBUTED BY SYNOPSYS SOLELY ON AN "AS IS"
102 * BASIS AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
103 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
104 * PARTICULAR PURPOSE ARE HEREBY DISCLAIMED. IN NO EVENT SHALL SYNOPSYS
105 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
106 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
107 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
108 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
109 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
110 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
111 * THE POSSIBILITY OF SUCH DAMAGE.
112 */
113
114 #include <sys/cdefs.h>
115 #include "xgbe.h"
116 #include "xgbe-common.h"
117
118 static void
xgbe_wrapper_tx_descriptor_init(struct xgbe_prv_data * pdata)119 xgbe_wrapper_tx_descriptor_init(struct xgbe_prv_data *pdata)
120 {
121 struct xgbe_hw_if *hw_if = &pdata->hw_if;
122 struct xgbe_channel *channel;
123 struct xgbe_ring *ring;
124 struct xgbe_ring_data *rdata;
125 struct xgbe_ring_desc *rdesc;
126 bus_addr_t rdesc_paddr;
127 unsigned int i, j;
128
129 DBGPR("-->xgbe_wrapper_tx_descriptor_init\n");
130
131 for (i = 0; i < pdata->channel_count; i++) {
132
133 channel = pdata->channel[i];
134
135 ring = channel->tx_ring;
136 if (!ring)
137 break;
138
139 rdesc = ring->rdesc;
140 rdesc_paddr = ring->rdesc_paddr;
141
142 for (j = 0; j < ring->rdesc_count; j++) {
143 rdata = XGBE_GET_DESC_DATA(ring, j);
144
145 rdata->rdesc = rdesc;
146 rdata->rdata_paddr = rdesc_paddr;
147
148 rdesc++;
149 rdesc_paddr += sizeof(struct xgbe_ring_desc);
150 }
151
152 ring->cur = 0;
153 ring->dirty = 0;
154 memset(&ring->tx, 0, sizeof(ring->tx));
155
156 hw_if->tx_desc_init(channel);
157 }
158
159 DBGPR("<--xgbe_wrapper_tx_descriptor_init\n");
160 }
161
162 static void
xgbe_wrapper_rx_descriptor_init(struct xgbe_prv_data * pdata)163 xgbe_wrapper_rx_descriptor_init(struct xgbe_prv_data *pdata)
164 {
165 struct xgbe_hw_if *hw_if = &pdata->hw_if;
166 struct xgbe_channel *channel;
167 struct xgbe_ring *ring;
168 struct xgbe_ring_desc *rdesc;
169 struct xgbe_ring_data *rdata;
170 bus_addr_t rdesc_paddr;
171 unsigned int i, j;
172
173 DBGPR("-->xgbe_wrapper_rx_descriptor_init\n");
174
175 for (i = 0; i < pdata->channel_count; i++) {
176
177 channel = pdata->channel[i];
178
179 ring = channel->rx_ring;
180 if (!ring)
181 break;
182
183 rdesc = ring->rdesc;
184 rdesc_paddr = ring->rdesc_paddr;
185
186 for (j = 0; j < ring->rdesc_count; j++) {
187 rdata = XGBE_GET_DESC_DATA(ring, j);
188
189 rdata->rdesc = rdesc;
190 rdata->rdata_paddr = rdesc_paddr;
191
192 rdesc++;
193 rdesc_paddr += sizeof(struct xgbe_ring_desc);
194 }
195
196 ring->cur = 0;
197 ring->dirty = 0;
198
199 hw_if->rx_desc_init(channel);
200 }
201 }
202
203 void
xgbe_init_function_ptrs_desc(struct xgbe_desc_if * desc_if)204 xgbe_init_function_ptrs_desc(struct xgbe_desc_if *desc_if)
205 {
206
207 desc_if->wrapper_tx_desc_init = xgbe_wrapper_tx_descriptor_init;
208 desc_if->wrapper_rx_desc_init = xgbe_wrapper_rx_descriptor_init;
209 }
210