blob: e2fdab42c4ceabee3f5eb02c5cd5b53ed8fdce28 [file] [log] [blame]
Yevgeny Petrilin2a2336f2008-10-22 11:44:46 -07001/*
2 * Copyright (c) 2007 Mellanox Technologies. All rights reserved.
3 *
4 * This software is available to you under a choice of one of two
5 * licenses. You may choose to be licensed under the terms of the GNU
6 * General Public License (GPL) Version 2, available from the file
7 * COPYING in the main directory of this source tree, or the
8 * OpenIB.org BSD license below:
9 *
10 * Redistribution and use in source and binary forms, with or
11 * without modification, are permitted provided that the following
12 * conditions are met:
13 *
14 * - Redistributions of source code must retain the above
15 * copyright notice, this list of conditions and the following
16 * disclaimer.
17 *
18 * - Redistributions in binary form must reproduce the above
19 * copyright notice, this list of conditions and the following
20 * disclaimer in the documentation and/or other materials
21 * provided with the distribution.
22 *
23 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
24 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
25 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
26 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
27 * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
28 * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
29 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
30 * SOFTWARE.
31 */
32
33#include <linux/errno.h>
34#include <linux/if_ether.h>
35
36#include <linux/mlx4/cmd.h>
37
38#include "mlx4.h"
39
40#define MLX4_MAC_VALID (1ull << 63)
41#define MLX4_MAC_MASK 0xffffffffffffULL
42
43#define MLX4_VLAN_VALID (1u << 31)
44#define MLX4_VLAN_MASK 0xfff
45
46void mlx4_init_mac_table(struct mlx4_dev *dev, struct mlx4_mac_table *table)
47{
48 int i;
49
50 mutex_init(&table->mutex);
51 for (i = 0; i < MLX4_MAX_MAC_NUM; i++) {
52 table->entries[i] = 0;
53 table->refs[i] = 0;
54 }
55 table->max = 1 << dev->caps.log_num_macs;
56 table->total = 0;
57}
58
59void mlx4_init_vlan_table(struct mlx4_dev *dev, struct mlx4_vlan_table *table)
60{
61 int i;
62
63 mutex_init(&table->mutex);
64 for (i = 0; i < MLX4_MAX_VLAN_NUM; i++) {
65 table->entries[i] = 0;
66 table->refs[i] = 0;
67 }
68 table->max = 1 << dev->caps.log_num_vlans;
69 table->total = 0;
70}
71
72static int mlx4_set_port_mac_table(struct mlx4_dev *dev, u8 port,
73 __be64 *entries)
74{
75 struct mlx4_cmd_mailbox *mailbox;
76 u32 in_mod;
77 int err;
78
79 mailbox = mlx4_alloc_cmd_mailbox(dev);
80 if (IS_ERR(mailbox))
81 return PTR_ERR(mailbox);
82
83 memcpy(mailbox->buf, entries, MLX4_MAC_TABLE_SIZE);
84
85 in_mod = MLX4_SET_PORT_MAC_TABLE << 8 | port;
86 err = mlx4_cmd(dev, mailbox->dma, in_mod, 1, MLX4_CMD_SET_PORT,
87 MLX4_CMD_TIME_CLASS_B);
88
89 mlx4_free_cmd_mailbox(dev, mailbox);
90 return err;
91}
92
93int mlx4_register_mac(struct mlx4_dev *dev, u8 port, u64 mac, int *index)
94{
95 struct mlx4_mac_table *table = &mlx4_priv(dev)->port[port].mac_table;
96 int i, err = 0;
97 int free = -1;
98
99 mlx4_dbg(dev, "Registering MAC: 0x%llx\n", (unsigned long long) mac);
100 mutex_lock(&table->mutex);
101 for (i = 0; i < MLX4_MAX_MAC_NUM - 1; i++) {
102 if (free < 0 && !table->refs[i]) {
103 free = i;
104 continue;
105 }
106
107 if (mac == (MLX4_MAC_MASK & be64_to_cpu(table->entries[i]))) {
108 /* MAC already registered, increase refernce count */
109 *index = i;
110 ++table->refs[i];
111 goto out;
112 }
113 }
114 mlx4_dbg(dev, "Free MAC index is %d\n", free);
115
116 if (table->total == table->max) {
117 /* No free mac entries */
118 err = -ENOSPC;
119 goto out;
120 }
121
122 /* Register new MAC */
123 table->refs[free] = 1;
124 table->entries[free] = cpu_to_be64(mac | MLX4_MAC_VALID);
125
126 err = mlx4_set_port_mac_table(dev, port, table->entries);
127 if (unlikely(err)) {
128 mlx4_err(dev, "Failed adding MAC: 0x%llx\n", (unsigned long long) mac);
129 table->refs[free] = 0;
130 table->entries[free] = 0;
131 goto out;
132 }
133
134 *index = free;
135 ++table->total;
136out:
137 mutex_unlock(&table->mutex);
138 return err;
139}
140EXPORT_SYMBOL_GPL(mlx4_register_mac);
141
142void mlx4_unregister_mac(struct mlx4_dev *dev, u8 port, int index)
143{
144 struct mlx4_mac_table *table = &mlx4_priv(dev)->port[port].mac_table;
145
146 mutex_lock(&table->mutex);
147 if (!table->refs[index]) {
148 mlx4_warn(dev, "No MAC entry for index %d\n", index);
149 goto out;
150 }
151 if (--table->refs[index]) {
152 mlx4_warn(dev, "Have more references for index %d,"
153 "no need to modify MAC table\n", index);
154 goto out;
155 }
156 table->entries[index] = 0;
157 mlx4_set_port_mac_table(dev, port, table->entries);
158 --table->total;
159out:
160 mutex_unlock(&table->mutex);
161}
162EXPORT_SYMBOL_GPL(mlx4_unregister_mac);
163
164static int mlx4_set_port_vlan_table(struct mlx4_dev *dev, u8 port,
165 __be32 *entries)
166{
167 struct mlx4_cmd_mailbox *mailbox;
168 u32 in_mod;
169 int err;
170
171 mailbox = mlx4_alloc_cmd_mailbox(dev);
172 if (IS_ERR(mailbox))
173 return PTR_ERR(mailbox);
174
175 memcpy(mailbox->buf, entries, MLX4_VLAN_TABLE_SIZE);
176 in_mod = MLX4_SET_PORT_VLAN_TABLE << 8 | port;
177 err = mlx4_cmd(dev, mailbox->dma, in_mod, 1, MLX4_CMD_SET_PORT,
178 MLX4_CMD_TIME_CLASS_B);
179
180 mlx4_free_cmd_mailbox(dev, mailbox);
181
182 return err;
183}
184
185int mlx4_register_vlan(struct mlx4_dev *dev, u8 port, u16 vlan, int *index)
186{
187 struct mlx4_vlan_table *table = &mlx4_priv(dev)->port[port].vlan_table;
188 int i, err = 0;
189 int free = -1;
190
191 mutex_lock(&table->mutex);
192 for (i = MLX4_VLAN_REGULAR; i < MLX4_MAX_VLAN_NUM; i++) {
193 if (free < 0 && (table->refs[i] == 0)) {
194 free = i;
195 continue;
196 }
197
198 if (table->refs[i] &&
199 (vlan == (MLX4_VLAN_MASK &
200 be32_to_cpu(table->entries[i])))) {
201 /* Vlan already registered, increase refernce count */
202 *index = i;
203 ++table->refs[i];
204 goto out;
205 }
206 }
207
208 if (table->total == table->max) {
209 /* No free vlan entries */
210 err = -ENOSPC;
211 goto out;
212 }
213
214 /* Register new MAC */
215 table->refs[free] = 1;
216 table->entries[free] = cpu_to_be32(vlan | MLX4_VLAN_VALID);
217
218 err = mlx4_set_port_vlan_table(dev, port, table->entries);
219 if (unlikely(err)) {
220 mlx4_warn(dev, "Failed adding vlan: %u\n", vlan);
221 table->refs[free] = 0;
222 table->entries[free] = 0;
223 goto out;
224 }
225
226 *index = free;
227 ++table->total;
228out:
229 mutex_unlock(&table->mutex);
230 return err;
231}
232EXPORT_SYMBOL_GPL(mlx4_register_vlan);
233
234void mlx4_unregister_vlan(struct mlx4_dev *dev, u8 port, int index)
235{
236 struct mlx4_vlan_table *table = &mlx4_priv(dev)->port[port].vlan_table;
237
238 if (index < MLX4_VLAN_REGULAR) {
239 mlx4_warn(dev, "Trying to free special vlan index %d\n", index);
240 return;
241 }
242
243 mutex_lock(&table->mutex);
244 if (!table->refs[index]) {
245 mlx4_warn(dev, "No vlan entry for index %d\n", index);
246 goto out;
247 }
248 if (--table->refs[index]) {
249 mlx4_dbg(dev, "Have more references for index %d,"
250 "no need to modify vlan table\n", index);
251 goto out;
252 }
253 table->entries[index] = 0;
254 mlx4_set_port_vlan_table(dev, port, table->entries);
255 --table->total;
256out:
257 mutex_unlock(&table->mutex);
258}
259EXPORT_SYMBOL_GPL(mlx4_unregister_vlan);
Yevgeny Petrilin7ff93f82008-10-22 15:38:42 -0700260
261int mlx4_SET_PORT(struct mlx4_dev *dev, u8 port)
262{
263 struct mlx4_cmd_mailbox *mailbox;
264 int err;
265 u8 is_eth = dev->caps.port_type[port] == MLX4_PORT_TYPE_ETH;
266
267 mailbox = mlx4_alloc_cmd_mailbox(dev);
268 if (IS_ERR(mailbox))
269 return PTR_ERR(mailbox);
270
271 memset(mailbox->buf, 0, 256);
272 if (is_eth) {
273 ((u8 *) mailbox->buf)[3] = 6;
274 ((__be16 *) mailbox->buf)[4] = cpu_to_be16(1 << 15);
275 ((__be16 *) mailbox->buf)[6] = cpu_to_be16(1 << 15);
276 }
277 err = mlx4_cmd(dev, mailbox->dma, port, is_eth, MLX4_CMD_SET_PORT,
278 MLX4_CMD_TIME_CLASS_B);
279
280 mlx4_free_cmd_mailbox(dev, mailbox);
281 return err;
282}