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2a2336f8 YP |
1 | /* |
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 | ||
46 | void 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 | ||
59 | void 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 | ||
72 | static 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 | ||
93 | int 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; | |
136 | out: | |
137 | mutex_unlock(&table->mutex); | |
138 | return err; | |
139 | } | |
140 | EXPORT_SYMBOL_GPL(mlx4_register_mac); | |
141 | ||
142 | void 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; | |
159 | out: | |
160 | mutex_unlock(&table->mutex); | |
161 | } | |
162 | EXPORT_SYMBOL_GPL(mlx4_unregister_mac); | |
163 | ||
164 | static 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 | ||
185 | int 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; | |
228 | out: | |
229 | mutex_unlock(&table->mutex); | |
230 | return err; | |
231 | } | |
232 | EXPORT_SYMBOL_GPL(mlx4_register_vlan); | |
233 | ||
234 | void 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; | |
256 | out: | |
257 | mutex_unlock(&table->mutex); | |
258 | } | |
259 | EXPORT_SYMBOL_GPL(mlx4_unregister_vlan); | |
7ff93f8b | 260 | |
9a5aa622 JM |
261 | int mlx4_get_port_ib_caps(struct mlx4_dev *dev, u8 port, __be32 *caps) |
262 | { | |
263 | struct mlx4_cmd_mailbox *inmailbox, *outmailbox; | |
264 | u8 *inbuf, *outbuf; | |
265 | int err; | |
266 | ||
267 | inmailbox = mlx4_alloc_cmd_mailbox(dev); | |
268 | if (IS_ERR(inmailbox)) | |
269 | return PTR_ERR(inmailbox); | |
270 | ||
271 | outmailbox = mlx4_alloc_cmd_mailbox(dev); | |
272 | if (IS_ERR(outmailbox)) { | |
273 | mlx4_free_cmd_mailbox(dev, inmailbox); | |
274 | return PTR_ERR(outmailbox); | |
275 | } | |
276 | ||
277 | inbuf = inmailbox->buf; | |
278 | outbuf = outmailbox->buf; | |
279 | memset(inbuf, 0, 256); | |
280 | memset(outbuf, 0, 256); | |
281 | inbuf[0] = 1; | |
282 | inbuf[1] = 1; | |
283 | inbuf[2] = 1; | |
284 | inbuf[3] = 1; | |
285 | *(__be16 *) (&inbuf[16]) = cpu_to_be16(0x0015); | |
286 | *(__be32 *) (&inbuf[20]) = cpu_to_be32(port); | |
287 | ||
288 | err = mlx4_cmd_box(dev, inmailbox->dma, outmailbox->dma, port, 3, | |
289 | MLX4_CMD_MAD_IFC, MLX4_CMD_TIME_CLASS_C); | |
290 | if (!err) | |
291 | *caps = *(__be32 *) (outbuf + 84); | |
292 | mlx4_free_cmd_mailbox(dev, inmailbox); | |
293 | mlx4_free_cmd_mailbox(dev, outmailbox); | |
294 | return err; | |
295 | } | |
296 | ||
7ff93f8b YP |
297 | int mlx4_SET_PORT(struct mlx4_dev *dev, u8 port) |
298 | { | |
299 | struct mlx4_cmd_mailbox *mailbox; | |
300 | int err; | |
301 | u8 is_eth = dev->caps.port_type[port] == MLX4_PORT_TYPE_ETH; | |
302 | ||
303 | mailbox = mlx4_alloc_cmd_mailbox(dev); | |
304 | if (IS_ERR(mailbox)) | |
305 | return PTR_ERR(mailbox); | |
306 | ||
307 | memset(mailbox->buf, 0, 256); | |
308 | if (is_eth) { | |
309 | ((u8 *) mailbox->buf)[3] = 6; | |
310 | ((__be16 *) mailbox->buf)[4] = cpu_to_be16(1 << 15); | |
311 | ((__be16 *) mailbox->buf)[6] = cpu_to_be16(1 << 15); | |
9a5aa622 JM |
312 | } else |
313 | ((__be32 *) mailbox->buf)[1] = dev->caps.ib_port_def_cap[port]; | |
7ff93f8b YP |
314 | err = mlx4_cmd(dev, mailbox->dma, port, is_eth, MLX4_CMD_SET_PORT, |
315 | MLX4_CMD_TIME_CLASS_B); | |
316 | ||
317 | mlx4_free_cmd_mailbox(dev, mailbox); | |
318 | return err; | |
319 | } |