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 #include <linux/if_vlan.h>
36 #include <linux/export.h>
37
38 #include <linux/mlx4/cmd.h>
39
40 #include "mlx4.h"
41 #include "mlx4_stats.h"
42
43 #define MLX4_MAC_VALID (1ull << 63)
44
45 #define MLX4_VLAN_VALID (1u << 31)
46 #define MLX4_VLAN_MASK 0xfff
47
48 #define MLX4_STATS_TRAFFIC_COUNTERS_MASK 0xfULL
49 #define MLX4_STATS_TRAFFIC_DROPS_MASK 0xc0ULL
50 #define MLX4_STATS_ERROR_COUNTERS_MASK 0x1ffc30ULL
51 #define MLX4_STATS_PORT_COUNTERS_MASK 0x1fe00000ULL
52
53 #define MLX4_FLAG2_V_IGNORE_FCS_MASK BIT(1)
54 #define MLX4_FLAG2_V_USER_MTU_MASK BIT(5)
55 #define MLX4_FLAG2_V_USER_MAC_MASK BIT(6)
56 #define MLX4_FLAG_V_MTU_MASK BIT(0)
57 #define MLX4_FLAG_V_PPRX_MASK BIT(1)
58 #define MLX4_FLAG_V_PPTX_MASK BIT(2)
59 #define MLX4_IGNORE_FCS_MASK 0x1
60 #define MLX4_TC_MAX_NUMBER 8
61
mlx4_init_mac_table(struct mlx4_dev * dev,struct mlx4_mac_table * table)62 void mlx4_init_mac_table(struct mlx4_dev *dev, struct mlx4_mac_table *table)
63 {
64 int i;
65
66 mutex_init(&table->mutex);
67 for (i = 0; i < MLX4_MAX_MAC_NUM; i++) {
68 table->entries[i] = 0;
69 table->refs[i] = 0;
70 table->is_dup[i] = false;
71 }
72 table->max = 1 << dev->caps.log_num_macs;
73 table->total = 0;
74 }
75
mlx4_init_vlan_table(struct mlx4_dev * dev,struct mlx4_vlan_table * table)76 void mlx4_init_vlan_table(struct mlx4_dev *dev, struct mlx4_vlan_table *table)
77 {
78 int i;
79
80 mutex_init(&table->mutex);
81 for (i = 0; i < MLX4_MAX_VLAN_NUM; i++) {
82 table->entries[i] = 0;
83 table->refs[i] = 0;
84 table->is_dup[i] = false;
85 }
86 table->max = (1 << dev->caps.log_num_vlans) - MLX4_VLAN_REGULAR;
87 table->total = 0;
88 }
89
mlx4_init_roce_gid_table(struct mlx4_dev * dev,struct mlx4_roce_gid_table * table)90 void mlx4_init_roce_gid_table(struct mlx4_dev *dev,
91 struct mlx4_roce_gid_table *table)
92 {
93 int i;
94
95 mutex_init(&table->mutex);
96 for (i = 0; i < MLX4_ROCE_MAX_GIDS; i++)
97 memset(table->roce_gids[i].raw, 0, MLX4_ROCE_GID_ENTRY_SIZE);
98 }
99
validate_index(struct mlx4_dev * dev,struct mlx4_mac_table * table,int index)100 static int validate_index(struct mlx4_dev *dev,
101 struct mlx4_mac_table *table, int index)
102 {
103 int err = 0;
104
105 if (index < 0 || index >= table->max || !table->entries[index]) {
106 mlx4_warn(dev, "No valid Mac entry for the given index\n");
107 err = -EINVAL;
108 }
109 return err;
110 }
111
find_index(struct mlx4_dev * dev,struct mlx4_mac_table * table,u64 mac)112 static int find_index(struct mlx4_dev *dev,
113 struct mlx4_mac_table *table, u64 mac)
114 {
115 int i;
116
117 for (i = 0; i < MLX4_MAX_MAC_NUM; i++) {
118 if (table->refs[i] &&
119 (MLX4_MAC_MASK & mac) ==
120 (MLX4_MAC_MASK & be64_to_cpu(table->entries[i])))
121 return i;
122 }
123 /* Mac not found */
124 return -EINVAL;
125 }
126
mlx4_set_port_mac_table(struct mlx4_dev * dev,u8 port,__be64 * entries)127 static int mlx4_set_port_mac_table(struct mlx4_dev *dev, u8 port,
128 __be64 *entries)
129 {
130 struct mlx4_cmd_mailbox *mailbox;
131 u32 in_mod;
132 int err;
133
134 mailbox = mlx4_alloc_cmd_mailbox(dev);
135 if (IS_ERR(mailbox))
136 return PTR_ERR(mailbox);
137
138 memcpy(mailbox->buf, entries, MLX4_MAC_TABLE_SIZE);
139
140 in_mod = MLX4_SET_PORT_MAC_TABLE << 8 | port;
141
142 err = mlx4_cmd(dev, mailbox->dma, in_mod, MLX4_SET_PORT_ETH_OPCODE,
143 MLX4_CMD_SET_PORT, MLX4_CMD_TIME_CLASS_B,
144 MLX4_CMD_NATIVE);
145
146 mlx4_free_cmd_mailbox(dev, mailbox);
147 return err;
148 }
149
mlx4_find_cached_mac(struct mlx4_dev * dev,u8 port,u64 mac,int * idx)150 int mlx4_find_cached_mac(struct mlx4_dev *dev, u8 port, u64 mac, int *idx)
151 {
152 struct mlx4_port_info *info = &mlx4_priv(dev)->port[port];
153 struct mlx4_mac_table *table = &info->mac_table;
154 int i;
155
156 for (i = 0; i < MLX4_MAX_MAC_NUM; i++) {
157 if (!table->refs[i])
158 continue;
159
160 if (mac == (MLX4_MAC_MASK & be64_to_cpu(table->entries[i]))) {
161 *idx = i;
162 return 0;
163 }
164 }
165
166 return -ENOENT;
167 }
168 EXPORT_SYMBOL_GPL(mlx4_find_cached_mac);
169
mlx4_need_mf_bond(struct mlx4_dev * dev)170 static bool mlx4_need_mf_bond(struct mlx4_dev *dev)
171 {
172 int i, num_eth_ports = 0;
173
174 if (!mlx4_is_mfunc(dev))
175 return false;
176 mlx4_foreach_port(i, dev, MLX4_PORT_TYPE_ETH)
177 ++num_eth_ports;
178
179 return (num_eth_ports == 2) ? true : false;
180 }
181
__mlx4_register_mac(struct mlx4_dev * dev,u8 port,u64 mac)182 int __mlx4_register_mac(struct mlx4_dev *dev, u8 port, u64 mac)
183 {
184 struct mlx4_port_info *info = &mlx4_priv(dev)->port[port];
185 struct mlx4_mac_table *table = &info->mac_table;
186 int i, err = 0;
187 int free = -1;
188 int free_for_dup = -1;
189 bool dup = mlx4_is_mf_bonded(dev);
190 u8 dup_port = (port == 1) ? 2 : 1;
191 struct mlx4_mac_table *dup_table = &mlx4_priv(dev)->port[dup_port].mac_table;
192 bool need_mf_bond = mlx4_need_mf_bond(dev);
193 bool can_mf_bond = true;
194
195 mlx4_dbg(dev, "Registering MAC: 0x%llx for port %d %s duplicate\n",
196 (unsigned long long)mac, port,
197 dup ? "with" : "without");
198
199 if (need_mf_bond) {
200 if (port == 1) {
201 mutex_lock(&table->mutex);
202 mutex_lock_nested(&dup_table->mutex, SINGLE_DEPTH_NESTING);
203 } else {
204 mutex_lock(&dup_table->mutex);
205 mutex_lock_nested(&table->mutex, SINGLE_DEPTH_NESTING);
206 }
207 } else {
208 mutex_lock(&table->mutex);
209 }
210
211 if (need_mf_bond) {
212 int index_at_port = -1;
213 int index_at_dup_port = -1;
214
215 for (i = 0; i < MLX4_MAX_MAC_NUM; i++) {
216 if (((MLX4_MAC_MASK & mac) == (MLX4_MAC_MASK & be64_to_cpu(table->entries[i]))))
217 index_at_port = i;
218 if (((MLX4_MAC_MASK & mac) == (MLX4_MAC_MASK & be64_to_cpu(dup_table->entries[i]))))
219 index_at_dup_port = i;
220 }
221
222 /* check that same mac is not in the tables at different indices */
223 if ((index_at_port != index_at_dup_port) &&
224 (index_at_port >= 0) &&
225 (index_at_dup_port >= 0))
226 can_mf_bond = false;
227
228 /* If the mac is already in the primary table, the slot must be
229 * available in the duplicate table as well.
230 */
231 if (index_at_port >= 0 && index_at_dup_port < 0 &&
232 dup_table->refs[index_at_port]) {
233 can_mf_bond = false;
234 }
235 /* If the mac is already in the duplicate table, check that the
236 * corresponding index is not occupied in the primary table, or
237 * the primary table already contains the mac at the same index.
238 * Otherwise, you cannot bond (primary contains a different mac
239 * at that index).
240 */
241 if (index_at_dup_port >= 0) {
242 if (!table->refs[index_at_dup_port] ||
243 ((MLX4_MAC_MASK & mac) == (MLX4_MAC_MASK & be64_to_cpu(table->entries[index_at_dup_port]))))
244 free_for_dup = index_at_dup_port;
245 else
246 can_mf_bond = false;
247 }
248 }
249
250 for (i = 0; i < MLX4_MAX_MAC_NUM; i++) {
251 if (!table->refs[i]) {
252 if (free < 0)
253 free = i;
254 if (free_for_dup < 0 && need_mf_bond && can_mf_bond) {
255 if (!dup_table->refs[i])
256 free_for_dup = i;
257 }
258 continue;
259 }
260
261 if ((MLX4_MAC_MASK & mac) ==
262 (MLX4_MAC_MASK & be64_to_cpu(table->entries[i]))) {
263 /* MAC already registered, increment ref count */
264 err = i;
265 ++table->refs[i];
266 if (dup) {
267 u64 dup_mac = MLX4_MAC_MASK & be64_to_cpu(dup_table->entries[i]);
268
269 if (dup_mac != mac || !dup_table->is_dup[i]) {
270 mlx4_warn(dev, "register mac: expect duplicate mac 0x%llx on port %d index %d\n",
271 mac, dup_port, i);
272 }
273 }
274 goto out;
275 }
276 }
277
278 if (need_mf_bond && (free_for_dup < 0)) {
279 if (dup) {
280 mlx4_warn(dev, "Fail to allocate duplicate MAC table entry\n");
281 mlx4_warn(dev, "High Availability for virtual functions may not work as expected\n");
282 dup = false;
283 }
284 can_mf_bond = false;
285 }
286
287 if (need_mf_bond && can_mf_bond)
288 free = free_for_dup;
289
290 mlx4_dbg(dev, "Free MAC index is %d\n", free);
291
292 if (table->total == table->max) {
293 /* No free mac entries */
294 err = -ENOSPC;
295 goto out;
296 }
297
298 /* Register new MAC */
299 table->entries[free] = cpu_to_be64(mac | MLX4_MAC_VALID);
300
301 err = mlx4_set_port_mac_table(dev, port, table->entries);
302 if (unlikely(err)) {
303 mlx4_err(dev, "Failed adding MAC: 0x%llx\n",
304 (unsigned long long) mac);
305 table->entries[free] = 0;
306 goto out;
307 }
308 table->refs[free] = 1;
309 table->is_dup[free] = false;
310 ++table->total;
311 if (dup) {
312 dup_table->refs[free] = 0;
313 dup_table->is_dup[free] = true;
314 dup_table->entries[free] = cpu_to_be64(mac | MLX4_MAC_VALID);
315
316 err = mlx4_set_port_mac_table(dev, dup_port, dup_table->entries);
317 if (unlikely(err)) {
318 mlx4_warn(dev, "Failed adding duplicate mac: 0x%llx\n", mac);
319 dup_table->is_dup[free] = false;
320 dup_table->entries[free] = 0;
321 goto out;
322 }
323 ++dup_table->total;
324 }
325 err = free;
326 out:
327 if (need_mf_bond) {
328 if (port == 2) {
329 mutex_unlock(&table->mutex);
330 mutex_unlock(&dup_table->mutex);
331 } else {
332 mutex_unlock(&dup_table->mutex);
333 mutex_unlock(&table->mutex);
334 }
335 } else {
336 mutex_unlock(&table->mutex);
337 }
338 return err;
339 }
340 EXPORT_SYMBOL_GPL(__mlx4_register_mac);
341
mlx4_register_mac(struct mlx4_dev * dev,u8 port,u64 mac)342 int mlx4_register_mac(struct mlx4_dev *dev, u8 port, u64 mac)
343 {
344 u64 out_param = 0;
345 int err = -EINVAL;
346
347 if (mlx4_is_mfunc(dev)) {
348 if (!(dev->flags & MLX4_FLAG_OLD_REG_MAC)) {
349 err = mlx4_cmd_imm(dev, mac, &out_param,
350 ((u32) port) << 8 | (u32) RES_MAC,
351 RES_OP_RESERVE_AND_MAP, MLX4_CMD_ALLOC_RES,
352 MLX4_CMD_TIME_CLASS_A, MLX4_CMD_WRAPPED);
353 }
354 if (err && err == -EINVAL && mlx4_is_slave(dev)) {
355 /* retry using old REG_MAC format */
356 set_param_l(&out_param, port);
357 err = mlx4_cmd_imm(dev, mac, &out_param, RES_MAC,
358 RES_OP_RESERVE_AND_MAP, MLX4_CMD_ALLOC_RES,
359 MLX4_CMD_TIME_CLASS_A, MLX4_CMD_WRAPPED);
360 if (!err)
361 dev->flags |= MLX4_FLAG_OLD_REG_MAC;
362 }
363 if (err)
364 return err;
365
366 return get_param_l(&out_param);
367 }
368 return __mlx4_register_mac(dev, port, mac);
369 }
370 EXPORT_SYMBOL_GPL(mlx4_register_mac);
371
mlx4_get_base_qpn(struct mlx4_dev * dev,u8 port)372 int mlx4_get_base_qpn(struct mlx4_dev *dev, u8 port)
373 {
374 return dev->caps.reserved_qps_base[MLX4_QP_REGION_ETH_ADDR] +
375 (port - 1) * (1 << dev->caps.log_num_macs);
376 }
377 EXPORT_SYMBOL_GPL(mlx4_get_base_qpn);
378
__mlx4_unregister_mac(struct mlx4_dev * dev,u8 port,u64 mac)379 void __mlx4_unregister_mac(struct mlx4_dev *dev, u8 port, u64 mac)
380 {
381 struct mlx4_port_info *info;
382 struct mlx4_mac_table *table;
383 int index;
384 bool dup = mlx4_is_mf_bonded(dev);
385 u8 dup_port = (port == 1) ? 2 : 1;
386 struct mlx4_mac_table *dup_table = &mlx4_priv(dev)->port[dup_port].mac_table;
387
388 if (port < 1 || port > dev->caps.num_ports) {
389 mlx4_warn(dev, "invalid port number (%d), aborting...\n", port);
390 return;
391 }
392 info = &mlx4_priv(dev)->port[port];
393 table = &info->mac_table;
394
395 if (dup) {
396 if (port == 1) {
397 mutex_lock(&table->mutex);
398 mutex_lock_nested(&dup_table->mutex, SINGLE_DEPTH_NESTING);
399 } else {
400 mutex_lock(&dup_table->mutex);
401 mutex_lock_nested(&table->mutex, SINGLE_DEPTH_NESTING);
402 }
403 } else {
404 mutex_lock(&table->mutex);
405 }
406
407 index = find_index(dev, table, mac);
408
409 if (validate_index(dev, table, index))
410 goto out;
411
412 if (--table->refs[index] || table->is_dup[index]) {
413 mlx4_dbg(dev, "Have more references for index %d, no need to modify mac table\n",
414 index);
415 if (!table->refs[index])
416 dup_table->is_dup[index] = false;
417 goto out;
418 }
419
420 table->entries[index] = 0;
421 if (mlx4_set_port_mac_table(dev, port, table->entries))
422 mlx4_warn(dev, "Fail to set mac in port %d during unregister\n", port);
423 --table->total;
424
425 if (dup) {
426 dup_table->is_dup[index] = false;
427 if (dup_table->refs[index])
428 goto out;
429 dup_table->entries[index] = 0;
430 if (mlx4_set_port_mac_table(dev, dup_port, dup_table->entries))
431 mlx4_warn(dev, "Fail to set mac in duplicate port %d during unregister\n", dup_port);
432
433 --table->total;
434 }
435 out:
436 if (dup) {
437 if (port == 2) {
438 mutex_unlock(&table->mutex);
439 mutex_unlock(&dup_table->mutex);
440 } else {
441 mutex_unlock(&dup_table->mutex);
442 mutex_unlock(&table->mutex);
443 }
444 } else {
445 mutex_unlock(&table->mutex);
446 }
447 }
448 EXPORT_SYMBOL_GPL(__mlx4_unregister_mac);
449
mlx4_unregister_mac(struct mlx4_dev * dev,u8 port,u64 mac)450 void mlx4_unregister_mac(struct mlx4_dev *dev, u8 port, u64 mac)
451 {
452 u64 out_param = 0;
453
454 if (mlx4_is_mfunc(dev)) {
455 if (!(dev->flags & MLX4_FLAG_OLD_REG_MAC)) {
456 (void) mlx4_cmd_imm(dev, mac, &out_param,
457 ((u32) port) << 8 | (u32) RES_MAC,
458 RES_OP_RESERVE_AND_MAP, MLX4_CMD_FREE_RES,
459 MLX4_CMD_TIME_CLASS_A, MLX4_CMD_WRAPPED);
460 } else {
461 /* use old unregister mac format */
462 set_param_l(&out_param, port);
463 (void) mlx4_cmd_imm(dev, mac, &out_param, RES_MAC,
464 RES_OP_RESERVE_AND_MAP, MLX4_CMD_FREE_RES,
465 MLX4_CMD_TIME_CLASS_A, MLX4_CMD_WRAPPED);
466 }
467 return;
468 }
469 __mlx4_unregister_mac(dev, port, mac);
470 return;
471 }
472 EXPORT_SYMBOL_GPL(mlx4_unregister_mac);
473
__mlx4_replace_mac(struct mlx4_dev * dev,u8 port,int qpn,u64 new_mac)474 int __mlx4_replace_mac(struct mlx4_dev *dev, u8 port, int qpn, u64 new_mac)
475 {
476 struct mlx4_port_info *info = &mlx4_priv(dev)->port[port];
477 struct mlx4_mac_table *table = &info->mac_table;
478 int index = qpn - info->base_qpn;
479 int err = 0;
480 bool dup = mlx4_is_mf_bonded(dev);
481 u8 dup_port = (port == 1) ? 2 : 1;
482 struct mlx4_mac_table *dup_table = &mlx4_priv(dev)->port[dup_port].mac_table;
483
484 /* CX1 doesn't support multi-functions */
485 if (dup) {
486 if (port == 1) {
487 mutex_lock(&table->mutex);
488 mutex_lock_nested(&dup_table->mutex, SINGLE_DEPTH_NESTING);
489 } else {
490 mutex_lock(&dup_table->mutex);
491 mutex_lock_nested(&table->mutex, SINGLE_DEPTH_NESTING);
492 }
493 } else {
494 mutex_lock(&table->mutex);
495 }
496
497 err = validate_index(dev, table, index);
498 if (err)
499 goto out;
500
501 table->entries[index] = cpu_to_be64(new_mac | MLX4_MAC_VALID);
502
503 err = mlx4_set_port_mac_table(dev, port, table->entries);
504 if (unlikely(err)) {
505 mlx4_err(dev, "Failed adding MAC: 0x%llx\n",
506 (unsigned long long) new_mac);
507 table->entries[index] = 0;
508 } else {
509 if (dup) {
510 dup_table->entries[index] = cpu_to_be64(new_mac | MLX4_MAC_VALID);
511
512 err = mlx4_set_port_mac_table(dev, dup_port, dup_table->entries);
513 if (unlikely(err)) {
514 mlx4_err(dev, "Failed adding duplicate MAC: 0x%llx\n",
515 (unsigned long long)new_mac);
516 dup_table->entries[index] = 0;
517 }
518 }
519 }
520 out:
521 if (dup) {
522 if (port == 2) {
523 mutex_unlock(&table->mutex);
524 mutex_unlock(&dup_table->mutex);
525 } else {
526 mutex_unlock(&dup_table->mutex);
527 mutex_unlock(&table->mutex);
528 }
529 } else {
530 mutex_unlock(&table->mutex);
531 }
532 return err;
533 }
534 EXPORT_SYMBOL_GPL(__mlx4_replace_mac);
535
mlx4_set_port_vlan_table(struct mlx4_dev * dev,u8 port,__be32 * entries)536 static int mlx4_set_port_vlan_table(struct mlx4_dev *dev, u8 port,
537 __be32 *entries)
538 {
539 struct mlx4_cmd_mailbox *mailbox;
540 u32 in_mod;
541 int err;
542
543 mailbox = mlx4_alloc_cmd_mailbox(dev);
544 if (IS_ERR(mailbox))
545 return PTR_ERR(mailbox);
546
547 memcpy(mailbox->buf, entries, MLX4_VLAN_TABLE_SIZE);
548 in_mod = MLX4_SET_PORT_VLAN_TABLE << 8 | port;
549 err = mlx4_cmd(dev, mailbox->dma, in_mod, MLX4_SET_PORT_ETH_OPCODE,
550 MLX4_CMD_SET_PORT, MLX4_CMD_TIME_CLASS_B,
551 MLX4_CMD_NATIVE);
552
553 mlx4_free_cmd_mailbox(dev, mailbox);
554
555 return err;
556 }
557
mlx4_find_cached_vlan(struct mlx4_dev * dev,u8 port,u16 vid,int * idx)558 int mlx4_find_cached_vlan(struct mlx4_dev *dev, u8 port, u16 vid, int *idx)
559 {
560 struct mlx4_vlan_table *table = &mlx4_priv(dev)->port[port].vlan_table;
561 int i;
562
563 for (i = 0; i < MLX4_MAX_VLAN_NUM; ++i) {
564 if (table->refs[i] &&
565 (vid == (MLX4_VLAN_MASK &
566 be32_to_cpu(table->entries[i])))) {
567 /* VLAN already registered, increase reference count */
568 *idx = i;
569 return 0;
570 }
571 }
572
573 return -ENOENT;
574 }
575 EXPORT_SYMBOL_GPL(mlx4_find_cached_vlan);
576
__mlx4_register_vlan(struct mlx4_dev * dev,u8 port,u16 vlan,int * index)577 int __mlx4_register_vlan(struct mlx4_dev *dev, u8 port, u16 vlan,
578 int *index)
579 {
580 struct mlx4_vlan_table *table = &mlx4_priv(dev)->port[port].vlan_table;
581 int i, err = 0;
582 int free = -1;
583 int free_for_dup = -1;
584 bool dup = mlx4_is_mf_bonded(dev);
585 u8 dup_port = (port == 1) ? 2 : 1;
586 struct mlx4_vlan_table *dup_table = &mlx4_priv(dev)->port[dup_port].vlan_table;
587 bool need_mf_bond = mlx4_need_mf_bond(dev);
588 bool can_mf_bond = true;
589
590 mlx4_dbg(dev, "Registering VLAN: %d for port %d %s duplicate\n",
591 vlan, port,
592 dup ? "with" : "without");
593
594 if (need_mf_bond) {
595 if (port == 1) {
596 mutex_lock(&table->mutex);
597 mutex_lock_nested(&dup_table->mutex, SINGLE_DEPTH_NESTING);
598 } else {
599 mutex_lock(&dup_table->mutex);
600 mutex_lock_nested(&table->mutex, SINGLE_DEPTH_NESTING);
601 }
602 } else {
603 mutex_lock(&table->mutex);
604 }
605
606 if (table->total == table->max) {
607 /* No free vlan entries */
608 err = -ENOSPC;
609 goto out;
610 }
611
612 if (need_mf_bond) {
613 int index_at_port = -1;
614 int index_at_dup_port = -1;
615
616 for (i = MLX4_VLAN_REGULAR; i < MLX4_MAX_VLAN_NUM; i++) {
617 if (vlan == (MLX4_VLAN_MASK & be32_to_cpu(table->entries[i])))
618 index_at_port = i;
619 if (vlan == (MLX4_VLAN_MASK & be32_to_cpu(dup_table->entries[i])))
620 index_at_dup_port = i;
621 }
622 /* check that same vlan is not in the tables at different indices */
623 if ((index_at_port != index_at_dup_port) &&
624 (index_at_port >= 0) &&
625 (index_at_dup_port >= 0))
626 can_mf_bond = false;
627
628 /* If the vlan is already in the primary table, the slot must be
629 * available in the duplicate table as well.
630 */
631 if (index_at_port >= 0 && index_at_dup_port < 0 &&
632 dup_table->refs[index_at_port]) {
633 can_mf_bond = false;
634 }
635 /* If the vlan is already in the duplicate table, check that the
636 * corresponding index is not occupied in the primary table, or
637 * the primary table already contains the vlan at the same index.
638 * Otherwise, you cannot bond (primary contains a different vlan
639 * at that index).
640 */
641 if (index_at_dup_port >= 0) {
642 if (!table->refs[index_at_dup_port] ||
643 (vlan == (MLX4_VLAN_MASK & be32_to_cpu(dup_table->entries[index_at_dup_port]))))
644 free_for_dup = index_at_dup_port;
645 else
646 can_mf_bond = false;
647 }
648 }
649
650 for (i = MLX4_VLAN_REGULAR; i < MLX4_MAX_VLAN_NUM; i++) {
651 if (!table->refs[i]) {
652 if (free < 0)
653 free = i;
654 if (free_for_dup < 0 && need_mf_bond && can_mf_bond) {
655 if (!dup_table->refs[i])
656 free_for_dup = i;
657 }
658 }
659
660 if ((table->refs[i] || table->is_dup[i]) &&
661 (vlan == (MLX4_VLAN_MASK &
662 be32_to_cpu(table->entries[i])))) {
663 /* Vlan already registered, increase references count */
664 mlx4_dbg(dev, "vlan %u is already registered.\n", vlan);
665 *index = i;
666 ++table->refs[i];
667 if (dup) {
668 u16 dup_vlan = MLX4_VLAN_MASK & be32_to_cpu(dup_table->entries[i]);
669
670 if (dup_vlan != vlan || !dup_table->is_dup[i]) {
671 mlx4_warn(dev, "register vlan: expected duplicate vlan %u on port %d index %d\n",
672 vlan, dup_port, i);
673 }
674 }
675 goto out;
676 }
677 }
678
679 if (need_mf_bond && (free_for_dup < 0)) {
680 if (dup) {
681 mlx4_warn(dev, "Fail to allocate duplicate VLAN table entry\n");
682 mlx4_warn(dev, "High Availability for virtual functions may not work as expected\n");
683 dup = false;
684 }
685 can_mf_bond = false;
686 }
687
688 if (need_mf_bond && can_mf_bond)
689 free = free_for_dup;
690
691 if (free < 0) {
692 err = -ENOMEM;
693 goto out;
694 }
695
696 /* Register new VLAN */
697 table->refs[free] = 1;
698 table->is_dup[free] = false;
699 table->entries[free] = cpu_to_be32(vlan | MLX4_VLAN_VALID);
700
701 err = mlx4_set_port_vlan_table(dev, port, table->entries);
702 if (unlikely(err)) {
703 mlx4_warn(dev, "Failed adding vlan: %u\n", vlan);
704 table->refs[free] = 0;
705 table->entries[free] = 0;
706 goto out;
707 }
708 ++table->total;
709 if (dup) {
710 dup_table->refs[free] = 0;
711 dup_table->is_dup[free] = true;
712 dup_table->entries[free] = cpu_to_be32(vlan | MLX4_VLAN_VALID);
713
714 err = mlx4_set_port_vlan_table(dev, dup_port, dup_table->entries);
715 if (unlikely(err)) {
716 mlx4_warn(dev, "Failed adding duplicate vlan: %u\n", vlan);
717 dup_table->is_dup[free] = false;
718 dup_table->entries[free] = 0;
719 goto out;
720 }
721 ++dup_table->total;
722 }
723
724 *index = free;
725 out:
726 if (need_mf_bond) {
727 if (port == 2) {
728 mutex_unlock(&table->mutex);
729 mutex_unlock(&dup_table->mutex);
730 } else {
731 mutex_unlock(&dup_table->mutex);
732 mutex_unlock(&table->mutex);
733 }
734 } else {
735 mutex_unlock(&table->mutex);
736 }
737 return err;
738 }
739
mlx4_register_vlan(struct mlx4_dev * dev,u8 port,u16 vlan,int * index)740 int mlx4_register_vlan(struct mlx4_dev *dev, u8 port, u16 vlan, int *index)
741 {
742 u64 out_param = 0;
743 int err;
744
745 if (vlan > 4095)
746 return -EINVAL;
747
748 if (mlx4_is_mfunc(dev)) {
749 err = mlx4_cmd_imm(dev, vlan, &out_param,
750 ((u32) port) << 8 | (u32) RES_VLAN,
751 RES_OP_RESERVE_AND_MAP, MLX4_CMD_ALLOC_RES,
752 MLX4_CMD_TIME_CLASS_A, MLX4_CMD_WRAPPED);
753 if (!err)
754 *index = get_param_l(&out_param);
755
756 return err;
757 }
758 return __mlx4_register_vlan(dev, port, vlan, index);
759 }
760 EXPORT_SYMBOL_GPL(mlx4_register_vlan);
761
__mlx4_unregister_vlan(struct mlx4_dev * dev,u8 port,u16 vlan)762 void __mlx4_unregister_vlan(struct mlx4_dev *dev, u8 port, u16 vlan)
763 {
764 struct mlx4_vlan_table *table = &mlx4_priv(dev)->port[port].vlan_table;
765 int index;
766 bool dup = mlx4_is_mf_bonded(dev);
767 u8 dup_port = (port == 1) ? 2 : 1;
768 struct mlx4_vlan_table *dup_table = &mlx4_priv(dev)->port[dup_port].vlan_table;
769
770 if (dup) {
771 if (port == 1) {
772 mutex_lock(&table->mutex);
773 mutex_lock_nested(&dup_table->mutex, SINGLE_DEPTH_NESTING);
774 } else {
775 mutex_lock(&dup_table->mutex);
776 mutex_lock_nested(&table->mutex, SINGLE_DEPTH_NESTING);
777 }
778 } else {
779 mutex_lock(&table->mutex);
780 }
781
782 if (mlx4_find_cached_vlan(dev, port, vlan, &index)) {
783 mlx4_warn(dev, "vlan 0x%x is not in the vlan table\n", vlan);
784 goto out;
785 }
786
787 if (index < MLX4_VLAN_REGULAR) {
788 mlx4_warn(dev, "Trying to free special vlan index %d\n", index);
789 goto out;
790 }
791
792 if (--table->refs[index] || table->is_dup[index]) {
793 mlx4_dbg(dev, "Have %d more references for index %d, no need to modify vlan table\n",
794 table->refs[index], index);
795 if (!table->refs[index])
796 dup_table->is_dup[index] = false;
797 goto out;
798 }
799 table->entries[index] = 0;
800 if (mlx4_set_port_vlan_table(dev, port, table->entries))
801 mlx4_warn(dev, "Fail to set vlan in port %d during unregister\n", port);
802 --table->total;
803 if (dup) {
804 dup_table->is_dup[index] = false;
805 if (dup_table->refs[index])
806 goto out;
807 dup_table->entries[index] = 0;
808 if (mlx4_set_port_vlan_table(dev, dup_port, dup_table->entries))
809 mlx4_warn(dev, "Fail to set vlan in duplicate port %d during unregister\n", dup_port);
810 --dup_table->total;
811 }
812 out:
813 if (dup) {
814 if (port == 2) {
815 mutex_unlock(&table->mutex);
816 mutex_unlock(&dup_table->mutex);
817 } else {
818 mutex_unlock(&dup_table->mutex);
819 mutex_unlock(&table->mutex);
820 }
821 } else {
822 mutex_unlock(&table->mutex);
823 }
824 }
825
mlx4_unregister_vlan(struct mlx4_dev * dev,u8 port,u16 vlan)826 void mlx4_unregister_vlan(struct mlx4_dev *dev, u8 port, u16 vlan)
827 {
828 u64 out_param = 0;
829
830 if (mlx4_is_mfunc(dev)) {
831 (void) mlx4_cmd_imm(dev, vlan, &out_param,
832 ((u32) port) << 8 | (u32) RES_VLAN,
833 RES_OP_RESERVE_AND_MAP,
834 MLX4_CMD_FREE_RES, MLX4_CMD_TIME_CLASS_A,
835 MLX4_CMD_WRAPPED);
836 return;
837 }
838 __mlx4_unregister_vlan(dev, port, vlan);
839 }
840 EXPORT_SYMBOL_GPL(mlx4_unregister_vlan);
841
mlx4_bond_mac_table(struct mlx4_dev * dev)842 int mlx4_bond_mac_table(struct mlx4_dev *dev)
843 {
844 struct mlx4_mac_table *t1 = &mlx4_priv(dev)->port[1].mac_table;
845 struct mlx4_mac_table *t2 = &mlx4_priv(dev)->port[2].mac_table;
846 int ret = 0;
847 int i;
848 bool update1 = false;
849 bool update2 = false;
850
851 mutex_lock(&t1->mutex);
852 mutex_lock(&t2->mutex);
853 for (i = 0; i < MLX4_MAX_MAC_NUM; i++) {
854 if ((t1->entries[i] != t2->entries[i]) &&
855 t1->entries[i] && t2->entries[i]) {
856 mlx4_warn(dev, "can't duplicate entry %d in mac table\n", i);
857 ret = -EINVAL;
858 goto unlock;
859 }
860 }
861
862 for (i = 0; i < MLX4_MAX_MAC_NUM; i++) {
863 if (t1->entries[i] && !t2->entries[i]) {
864 t2->entries[i] = t1->entries[i];
865 t2->is_dup[i] = true;
866 update2 = true;
867 } else if (!t1->entries[i] && t2->entries[i]) {
868 t1->entries[i] = t2->entries[i];
869 t1->is_dup[i] = true;
870 update1 = true;
871 } else if (t1->entries[i] && t2->entries[i]) {
872 t1->is_dup[i] = true;
873 t2->is_dup[i] = true;
874 }
875 }
876
877 if (update1) {
878 ret = mlx4_set_port_mac_table(dev, 1, t1->entries);
879 if (ret)
880 mlx4_warn(dev, "failed to set MAC table for port 1 (%d)\n", ret);
881 }
882 if (!ret && update2) {
883 ret = mlx4_set_port_mac_table(dev, 2, t2->entries);
884 if (ret)
885 mlx4_warn(dev, "failed to set MAC table for port 2 (%d)\n", ret);
886 }
887
888 if (ret)
889 mlx4_warn(dev, "failed to create mirror MAC tables\n");
890 unlock:
891 mutex_unlock(&t2->mutex);
892 mutex_unlock(&t1->mutex);
893 return ret;
894 }
895
mlx4_unbond_mac_table(struct mlx4_dev * dev)896 int mlx4_unbond_mac_table(struct mlx4_dev *dev)
897 {
898 struct mlx4_mac_table *t1 = &mlx4_priv(dev)->port[1].mac_table;
899 struct mlx4_mac_table *t2 = &mlx4_priv(dev)->port[2].mac_table;
900 int ret = 0;
901 int ret1;
902 int i;
903 bool update1 = false;
904 bool update2 = false;
905
906 mutex_lock(&t1->mutex);
907 mutex_lock(&t2->mutex);
908 for (i = 0; i < MLX4_MAX_MAC_NUM; i++) {
909 if (t1->entries[i] != t2->entries[i]) {
910 mlx4_warn(dev, "mac table is in an unexpected state when trying to unbond\n");
911 ret = -EINVAL;
912 goto unlock;
913 }
914 }
915
916 for (i = 0; i < MLX4_MAX_MAC_NUM; i++) {
917 if (!t1->entries[i])
918 continue;
919 t1->is_dup[i] = false;
920 if (!t1->refs[i]) {
921 t1->entries[i] = 0;
922 update1 = true;
923 }
924 t2->is_dup[i] = false;
925 if (!t2->refs[i]) {
926 t2->entries[i] = 0;
927 update2 = true;
928 }
929 }
930
931 if (update1) {
932 ret = mlx4_set_port_mac_table(dev, 1, t1->entries);
933 if (ret)
934 mlx4_warn(dev, "failed to unmirror MAC tables for port 1(%d)\n", ret);
935 }
936 if (update2) {
937 ret1 = mlx4_set_port_mac_table(dev, 2, t2->entries);
938 if (ret1) {
939 mlx4_warn(dev, "failed to unmirror MAC tables for port 2(%d)\n", ret1);
940 ret = ret1;
941 }
942 }
943 unlock:
944 mutex_unlock(&t2->mutex);
945 mutex_unlock(&t1->mutex);
946 return ret;
947 }
948
mlx4_bond_vlan_table(struct mlx4_dev * dev)949 int mlx4_bond_vlan_table(struct mlx4_dev *dev)
950 {
951 struct mlx4_vlan_table *t1 = &mlx4_priv(dev)->port[1].vlan_table;
952 struct mlx4_vlan_table *t2 = &mlx4_priv(dev)->port[2].vlan_table;
953 int ret = 0;
954 int i;
955 bool update1 = false;
956 bool update2 = false;
957
958 mutex_lock(&t1->mutex);
959 mutex_lock(&t2->mutex);
960 for (i = 0; i < MLX4_MAX_VLAN_NUM; i++) {
961 if ((t1->entries[i] != t2->entries[i]) &&
962 t1->entries[i] && t2->entries[i]) {
963 mlx4_warn(dev, "can't duplicate entry %d in vlan table\n", i);
964 ret = -EINVAL;
965 goto unlock;
966 }
967 }
968
969 for (i = 0; i < MLX4_MAX_VLAN_NUM; i++) {
970 if (t1->entries[i] && !t2->entries[i]) {
971 t2->entries[i] = t1->entries[i];
972 t2->is_dup[i] = true;
973 update2 = true;
974 } else if (!t1->entries[i] && t2->entries[i]) {
975 t1->entries[i] = t2->entries[i];
976 t1->is_dup[i] = true;
977 update1 = true;
978 } else if (t1->entries[i] && t2->entries[i]) {
979 t1->is_dup[i] = true;
980 t2->is_dup[i] = true;
981 }
982 }
983
984 if (update1) {
985 ret = mlx4_set_port_vlan_table(dev, 1, t1->entries);
986 if (ret)
987 mlx4_warn(dev, "failed to set VLAN table for port 1 (%d)\n", ret);
988 }
989 if (!ret && update2) {
990 ret = mlx4_set_port_vlan_table(dev, 2, t2->entries);
991 if (ret)
992 mlx4_warn(dev, "failed to set VLAN table for port 2 (%d)\n", ret);
993 }
994
995 if (ret)
996 mlx4_warn(dev, "failed to create mirror VLAN tables\n");
997 unlock:
998 mutex_unlock(&t2->mutex);
999 mutex_unlock(&t1->mutex);
1000 return ret;
1001 }
1002
mlx4_unbond_vlan_table(struct mlx4_dev * dev)1003 int mlx4_unbond_vlan_table(struct mlx4_dev *dev)
1004 {
1005 struct mlx4_vlan_table *t1 = &mlx4_priv(dev)->port[1].vlan_table;
1006 struct mlx4_vlan_table *t2 = &mlx4_priv(dev)->port[2].vlan_table;
1007 int ret = 0;
1008 int ret1;
1009 int i;
1010 bool update1 = false;
1011 bool update2 = false;
1012
1013 mutex_lock(&t1->mutex);
1014 mutex_lock(&t2->mutex);
1015 for (i = 0; i < MLX4_MAX_VLAN_NUM; i++) {
1016 if (t1->entries[i] != t2->entries[i]) {
1017 mlx4_warn(dev, "vlan table is in an unexpected state when trying to unbond\n");
1018 ret = -EINVAL;
1019 goto unlock;
1020 }
1021 }
1022
1023 for (i = 0; i < MLX4_MAX_VLAN_NUM; i++) {
1024 if (!t1->entries[i])
1025 continue;
1026 t1->is_dup[i] = false;
1027 if (!t1->refs[i]) {
1028 t1->entries[i] = 0;
1029 update1 = true;
1030 }
1031 t2->is_dup[i] = false;
1032 if (!t2->refs[i]) {
1033 t2->entries[i] = 0;
1034 update2 = true;
1035 }
1036 }
1037
1038 if (update1) {
1039 ret = mlx4_set_port_vlan_table(dev, 1, t1->entries);
1040 if (ret)
1041 mlx4_warn(dev, "failed to unmirror VLAN tables for port 1(%d)\n", ret);
1042 }
1043 if (update2) {
1044 ret1 = mlx4_set_port_vlan_table(dev, 2, t2->entries);
1045 if (ret1) {
1046 mlx4_warn(dev, "failed to unmirror VLAN tables for port 2(%d)\n", ret1);
1047 ret = ret1;
1048 }
1049 }
1050 unlock:
1051 mutex_unlock(&t2->mutex);
1052 mutex_unlock(&t1->mutex);
1053 return ret;
1054 }
1055
mlx4_get_port_ib_caps(struct mlx4_dev * dev,u8 port,__be32 * caps)1056 int mlx4_get_port_ib_caps(struct mlx4_dev *dev, u8 port, __be32 *caps)
1057 {
1058 struct mlx4_cmd_mailbox *inmailbox, *outmailbox;
1059 u8 *inbuf, *outbuf;
1060 int err;
1061
1062 inmailbox = mlx4_alloc_cmd_mailbox(dev);
1063 if (IS_ERR(inmailbox))
1064 return PTR_ERR(inmailbox);
1065
1066 outmailbox = mlx4_alloc_cmd_mailbox(dev);
1067 if (IS_ERR(outmailbox)) {
1068 mlx4_free_cmd_mailbox(dev, inmailbox);
1069 return PTR_ERR(outmailbox);
1070 }
1071
1072 inbuf = inmailbox->buf;
1073 outbuf = outmailbox->buf;
1074 inbuf[0] = 1;
1075 inbuf[1] = 1;
1076 inbuf[2] = 1;
1077 inbuf[3] = 1;
1078 *(__be16 *) (&inbuf[16]) = cpu_to_be16(0x0015);
1079 *(__be32 *) (&inbuf[20]) = cpu_to_be32(port);
1080
1081 err = mlx4_cmd_box(dev, inmailbox->dma, outmailbox->dma, port, 3,
1082 MLX4_CMD_MAD_IFC, MLX4_CMD_TIME_CLASS_C,
1083 MLX4_CMD_NATIVE);
1084 if (!err)
1085 *caps = *(__be32 *) (outbuf + 84);
1086 mlx4_free_cmd_mailbox(dev, inmailbox);
1087 mlx4_free_cmd_mailbox(dev, outmailbox);
1088 return err;
1089 }
1090 static struct mlx4_roce_gid_entry zgid_entry;
1091
mlx4_get_slave_num_gids(struct mlx4_dev * dev,int slave,int port)1092 int mlx4_get_slave_num_gids(struct mlx4_dev *dev, int slave, int port)
1093 {
1094 int vfs;
1095 int slave_gid = slave;
1096 unsigned i;
1097 struct mlx4_slaves_pport slaves_pport;
1098 struct mlx4_active_ports actv_ports;
1099 unsigned max_port_p_one;
1100
1101 if (slave == 0)
1102 return MLX4_ROCE_PF_GIDS;
1103
1104 /* Slave is a VF */
1105 slaves_pport = mlx4_phys_to_slaves_pport(dev, port);
1106 actv_ports = mlx4_get_active_ports(dev, slave);
1107 max_port_p_one = find_first_bit(actv_ports.ports, dev->caps.num_ports) +
1108 bitmap_weight(actv_ports.ports, dev->caps.num_ports) + 1;
1109
1110 for (i = 1; i < max_port_p_one; i++) {
1111 struct mlx4_active_ports exclusive_ports;
1112 struct mlx4_slaves_pport slaves_pport_actv;
1113 bitmap_zero(exclusive_ports.ports, dev->caps.num_ports);
1114 set_bit(i - 1, exclusive_ports.ports);
1115 if (i == port)
1116 continue;
1117 slaves_pport_actv = mlx4_phys_to_slaves_pport_actv(
1118 dev, &exclusive_ports);
1119 slave_gid -= bitmap_weight(slaves_pport_actv.slaves,
1120 dev->persist->num_vfs + 1);
1121 }
1122 vfs = bitmap_weight(slaves_pport.slaves, dev->persist->num_vfs + 1) - 1;
1123 if (slave_gid <= ((MLX4_ROCE_MAX_GIDS - MLX4_ROCE_PF_GIDS) % vfs))
1124 return ((MLX4_ROCE_MAX_GIDS - MLX4_ROCE_PF_GIDS) / vfs) + 1;
1125 return (MLX4_ROCE_MAX_GIDS - MLX4_ROCE_PF_GIDS) / vfs;
1126 }
1127
mlx4_get_base_gid_ix(struct mlx4_dev * dev,int slave,int port)1128 int mlx4_get_base_gid_ix(struct mlx4_dev *dev, int slave, int port)
1129 {
1130 int gids;
1131 unsigned i;
1132 int slave_gid = slave;
1133 int vfs;
1134
1135 struct mlx4_slaves_pport slaves_pport;
1136 struct mlx4_active_ports actv_ports;
1137 unsigned max_port_p_one;
1138
1139 if (slave == 0)
1140 return 0;
1141
1142 slaves_pport = mlx4_phys_to_slaves_pport(dev, port);
1143 actv_ports = mlx4_get_active_ports(dev, slave);
1144 max_port_p_one = find_first_bit(actv_ports.ports, dev->caps.num_ports) +
1145 bitmap_weight(actv_ports.ports, dev->caps.num_ports) + 1;
1146
1147 for (i = 1; i < max_port_p_one; i++) {
1148 struct mlx4_active_ports exclusive_ports;
1149 struct mlx4_slaves_pport slaves_pport_actv;
1150 bitmap_zero(exclusive_ports.ports, dev->caps.num_ports);
1151 set_bit(i - 1, exclusive_ports.ports);
1152 if (i == port)
1153 continue;
1154 slaves_pport_actv = mlx4_phys_to_slaves_pport_actv(
1155 dev, &exclusive_ports);
1156 slave_gid -= bitmap_weight(slaves_pport_actv.slaves,
1157 dev->persist->num_vfs + 1);
1158 }
1159 gids = MLX4_ROCE_MAX_GIDS - MLX4_ROCE_PF_GIDS;
1160 vfs = bitmap_weight(slaves_pport.slaves, dev->persist->num_vfs + 1) - 1;
1161 if (slave_gid <= gids % vfs)
1162 return MLX4_ROCE_PF_GIDS + ((gids / vfs) + 1) * (slave_gid - 1);
1163
1164 return MLX4_ROCE_PF_GIDS + (gids % vfs) +
1165 ((gids / vfs) * (slave_gid - 1));
1166 }
1167 EXPORT_SYMBOL_GPL(mlx4_get_base_gid_ix);
1168
mlx4_reset_roce_port_gids(struct mlx4_dev * dev,int slave,int port,struct mlx4_cmd_mailbox * mailbox)1169 static int mlx4_reset_roce_port_gids(struct mlx4_dev *dev, int slave,
1170 int port, struct mlx4_cmd_mailbox *mailbox)
1171 {
1172 struct mlx4_roce_gid_entry *gid_entry_mbox;
1173 struct mlx4_priv *priv = mlx4_priv(dev);
1174 int num_gids, base, offset;
1175 int i, err;
1176
1177 num_gids = mlx4_get_slave_num_gids(dev, slave, port);
1178 base = mlx4_get_base_gid_ix(dev, slave, port);
1179
1180 memset(mailbox->buf, 0, MLX4_MAILBOX_SIZE);
1181
1182 mutex_lock(&(priv->port[port].gid_table.mutex));
1183 /* Zero-out gids belonging to that slave in the port GID table */
1184 for (i = 0, offset = base; i < num_gids; offset++, i++)
1185 memcpy(priv->port[port].gid_table.roce_gids[offset].raw,
1186 zgid_entry.raw, MLX4_ROCE_GID_ENTRY_SIZE);
1187
1188 /* Now, copy roce port gids table to mailbox for passing to FW */
1189 gid_entry_mbox = (struct mlx4_roce_gid_entry *)mailbox->buf;
1190 for (i = 0; i < MLX4_ROCE_MAX_GIDS; gid_entry_mbox++, i++)
1191 memcpy(gid_entry_mbox->raw,
1192 priv->port[port].gid_table.roce_gids[i].raw,
1193 MLX4_ROCE_GID_ENTRY_SIZE);
1194
1195 err = mlx4_cmd(dev, mailbox->dma,
1196 ((u32)port) | (MLX4_SET_PORT_GID_TABLE << 8),
1197 MLX4_SET_PORT_ETH_OPCODE, MLX4_CMD_SET_PORT,
1198 MLX4_CMD_TIME_CLASS_B, MLX4_CMD_NATIVE);
1199 mutex_unlock(&(priv->port[port].gid_table.mutex));
1200 return err;
1201 }
1202
1203
mlx4_reset_roce_gids(struct mlx4_dev * dev,int slave)1204 void mlx4_reset_roce_gids(struct mlx4_dev *dev, int slave)
1205 {
1206 struct mlx4_active_ports actv_ports;
1207 struct mlx4_cmd_mailbox *mailbox;
1208 int num_eth_ports, err;
1209 int i;
1210
1211 if (slave < 0 || slave > dev->persist->num_vfs)
1212 return;
1213
1214 actv_ports = mlx4_get_active_ports(dev, slave);
1215
1216 for (i = 0, num_eth_ports = 0; i < dev->caps.num_ports; i++) {
1217 if (test_bit(i, actv_ports.ports)) {
1218 if (dev->caps.port_type[i + 1] != MLX4_PORT_TYPE_ETH)
1219 continue;
1220 num_eth_ports++;
1221 }
1222 }
1223
1224 if (!num_eth_ports)
1225 return;
1226
1227 /* have ETH ports. Alloc mailbox for SET_PORT command */
1228 mailbox = mlx4_alloc_cmd_mailbox(dev);
1229 if (IS_ERR(mailbox))
1230 return;
1231
1232 for (i = 0; i < dev->caps.num_ports; i++) {
1233 if (test_bit(i, actv_ports.ports)) {
1234 if (dev->caps.port_type[i + 1] != MLX4_PORT_TYPE_ETH)
1235 continue;
1236 err = mlx4_reset_roce_port_gids(dev, slave, i + 1, mailbox);
1237 if (err)
1238 mlx4_warn(dev, "Could not reset ETH port GID table for slave %d, port %d (%d)\n",
1239 slave, i + 1, err);
1240 }
1241 }
1242
1243 mlx4_free_cmd_mailbox(dev, mailbox);
1244 return;
1245 }
1246
1247 static void
mlx4_en_set_port_mtu(struct mlx4_dev * dev,int slave,int port,struct mlx4_set_port_general_context * gen_context)1248 mlx4_en_set_port_mtu(struct mlx4_dev *dev, int slave, int port,
1249 struct mlx4_set_port_general_context *gen_context)
1250 {
1251 struct mlx4_priv *priv = mlx4_priv(dev);
1252 struct mlx4_mfunc_master_ctx *master = &priv->mfunc.master;
1253 struct mlx4_slave_state *slave_st = &master->slave_state[slave];
1254 u16 mtu, prev_mtu;
1255
1256 /* Mtu is configured as the max USER_MTU among all
1257 * the functions on the port.
1258 */
1259 mtu = be16_to_cpu(gen_context->mtu);
1260 mtu = min_t(int, mtu, dev->caps.eth_mtu_cap[port] +
1261 ETH_HLEN + VLAN_HLEN + ETH_FCS_LEN);
1262 prev_mtu = slave_st->mtu[port];
1263 slave_st->mtu[port] = mtu;
1264 if (mtu > master->max_mtu[port])
1265 master->max_mtu[port] = mtu;
1266 if (mtu < prev_mtu && prev_mtu == master->max_mtu[port]) {
1267 int i;
1268
1269 slave_st->mtu[port] = mtu;
1270 master->max_mtu[port] = mtu;
1271 for (i = 0; i < dev->num_slaves; i++)
1272 master->max_mtu[port] =
1273 max_t(u16, master->max_mtu[port],
1274 master->slave_state[i].mtu[port]);
1275 }
1276 gen_context->mtu = cpu_to_be16(master->max_mtu[port]);
1277 }
1278
1279 static void
mlx4_en_set_port_user_mtu(struct mlx4_dev * dev,int slave,int port,struct mlx4_set_port_general_context * gen_context)1280 mlx4_en_set_port_user_mtu(struct mlx4_dev *dev, int slave, int port,
1281 struct mlx4_set_port_general_context *gen_context)
1282 {
1283 struct mlx4_priv *priv = mlx4_priv(dev);
1284 struct mlx4_mfunc_master_ctx *master = &priv->mfunc.master;
1285 struct mlx4_slave_state *slave_st = &master->slave_state[slave];
1286 u16 user_mtu, prev_user_mtu;
1287
1288 /* User Mtu is configured as the max USER_MTU among all
1289 * the functions on the port.
1290 */
1291 user_mtu = be16_to_cpu(gen_context->user_mtu);
1292 user_mtu = min_t(int, user_mtu, dev->caps.eth_mtu_cap[port]);
1293 prev_user_mtu = slave_st->user_mtu[port];
1294 slave_st->user_mtu[port] = user_mtu;
1295 if (user_mtu > master->max_user_mtu[port])
1296 master->max_user_mtu[port] = user_mtu;
1297 if (user_mtu < prev_user_mtu &&
1298 prev_user_mtu == master->max_user_mtu[port]) {
1299 int i;
1300
1301 slave_st->user_mtu[port] = user_mtu;
1302 master->max_user_mtu[port] = user_mtu;
1303 for (i = 0; i < dev->num_slaves; i++)
1304 master->max_user_mtu[port] =
1305 max_t(u16, master->max_user_mtu[port],
1306 master->slave_state[i].user_mtu[port]);
1307 }
1308 gen_context->user_mtu = cpu_to_be16(master->max_user_mtu[port]);
1309 }
1310
1311 static void
mlx4_en_set_port_global_pause(struct mlx4_dev * dev,int slave,struct mlx4_set_port_general_context * gen_context)1312 mlx4_en_set_port_global_pause(struct mlx4_dev *dev, int slave,
1313 struct mlx4_set_port_general_context *gen_context)
1314 {
1315 struct mlx4_priv *priv = mlx4_priv(dev);
1316 struct mlx4_mfunc_master_ctx *master = &priv->mfunc.master;
1317
1318 /* Slave cannot change Global Pause configuration */
1319 if (slave != mlx4_master_func_num(dev) &&
1320 (gen_context->pptx != master->pptx ||
1321 gen_context->pprx != master->pprx)) {
1322 gen_context->pptx = master->pptx;
1323 gen_context->pprx = master->pprx;
1324 mlx4_warn(dev, "denying Global Pause change for slave:%d\n",
1325 slave);
1326 } else {
1327 master->pptx = gen_context->pptx;
1328 master->pprx = gen_context->pprx;
1329 }
1330 }
1331
mlx4_common_set_port(struct mlx4_dev * dev,int slave,u32 in_mod,u8 op_mod,struct mlx4_cmd_mailbox * inbox)1332 static int mlx4_common_set_port(struct mlx4_dev *dev, int slave, u32 in_mod,
1333 u8 op_mod, struct mlx4_cmd_mailbox *inbox)
1334 {
1335 struct mlx4_priv *priv = mlx4_priv(dev);
1336 struct mlx4_port_info *port_info;
1337 struct mlx4_set_port_rqp_calc_context *qpn_context;
1338 struct mlx4_set_port_general_context *gen_context;
1339 struct mlx4_roce_gid_entry *gid_entry_tbl, *gid_entry_mbox, *gid_entry_mb1;
1340 int reset_qkey_viols;
1341 int port;
1342 int is_eth;
1343 int num_gids;
1344 int base;
1345 u32 in_modifier;
1346 u32 promisc;
1347 int err;
1348 int i, j;
1349 int offset;
1350 __be32 agg_cap_mask;
1351 __be32 slave_cap_mask;
1352 __be32 new_cap_mask;
1353
1354 port = in_mod & 0xff;
1355 in_modifier = in_mod >> 8;
1356 is_eth = op_mod;
1357 port_info = &priv->port[port];
1358
1359 /* Slaves cannot perform SET_PORT operations,
1360 * except for changing MTU and USER_MTU.
1361 */
1362 if (is_eth) {
1363 if (slave != dev->caps.function &&
1364 in_modifier != MLX4_SET_PORT_GENERAL &&
1365 in_modifier != MLX4_SET_PORT_GID_TABLE) {
1366 mlx4_warn(dev, "denying SET_PORT for slave:%d\n",
1367 slave);
1368 return -EINVAL;
1369 }
1370 switch (in_modifier) {
1371 case MLX4_SET_PORT_RQP_CALC:
1372 qpn_context = inbox->buf;
1373 qpn_context->base_qpn =
1374 cpu_to_be32(port_info->base_qpn);
1375 qpn_context->n_mac = 0x7;
1376 promisc = be32_to_cpu(qpn_context->promisc) >>
1377 SET_PORT_PROMISC_SHIFT;
1378 qpn_context->promisc = cpu_to_be32(
1379 promisc << SET_PORT_PROMISC_SHIFT |
1380 port_info->base_qpn);
1381 promisc = be32_to_cpu(qpn_context->mcast) >>
1382 SET_PORT_MC_PROMISC_SHIFT;
1383 qpn_context->mcast = cpu_to_be32(
1384 promisc << SET_PORT_MC_PROMISC_SHIFT |
1385 port_info->base_qpn);
1386 break;
1387 case MLX4_SET_PORT_GENERAL:
1388 gen_context = inbox->buf;
1389
1390 if (gen_context->flags & MLX4_FLAG_V_MTU_MASK)
1391 mlx4_en_set_port_mtu(dev, slave, port,
1392 gen_context);
1393
1394 if (gen_context->flags2 & MLX4_FLAG2_V_USER_MTU_MASK)
1395 mlx4_en_set_port_user_mtu(dev, slave, port,
1396 gen_context);
1397
1398 if (gen_context->flags &
1399 (MLX4_FLAG_V_PPRX_MASK | MLX4_FLAG_V_PPTX_MASK))
1400 mlx4_en_set_port_global_pause(dev, slave,
1401 gen_context);
1402
1403 break;
1404 case MLX4_SET_PORT_GID_TABLE:
1405 /* change to MULTIPLE entries: number of guest's gids
1406 * need a FOR-loop here over number of gids the guest has.
1407 * 1. Check no duplicates in gids passed by slave
1408 */
1409 num_gids = mlx4_get_slave_num_gids(dev, slave, port);
1410 base = mlx4_get_base_gid_ix(dev, slave, port);
1411 gid_entry_mbox = (struct mlx4_roce_gid_entry *)(inbox->buf);
1412 for (i = 0; i < num_gids; gid_entry_mbox++, i++) {
1413 if (!memcmp(gid_entry_mbox->raw, zgid_entry.raw,
1414 sizeof(zgid_entry)))
1415 continue;
1416 gid_entry_mb1 = gid_entry_mbox + 1;
1417 for (j = i + 1; j < num_gids; gid_entry_mb1++, j++) {
1418 if (!memcmp(gid_entry_mb1->raw,
1419 zgid_entry.raw, sizeof(zgid_entry)))
1420 continue;
1421 if (!memcmp(gid_entry_mb1->raw, gid_entry_mbox->raw,
1422 sizeof(gid_entry_mbox->raw))) {
1423 /* found duplicate */
1424 return -EINVAL;
1425 }
1426 }
1427 }
1428
1429 /* 2. Check that do not have duplicates in OTHER
1430 * entries in the port GID table
1431 */
1432
1433 mutex_lock(&(priv->port[port].gid_table.mutex));
1434 for (i = 0; i < MLX4_ROCE_MAX_GIDS; i++) {
1435 if (i >= base && i < base + num_gids)
1436 continue; /* don't compare to slave's current gids */
1437 gid_entry_tbl = &priv->port[port].gid_table.roce_gids[i];
1438 if (!memcmp(gid_entry_tbl->raw, zgid_entry.raw, sizeof(zgid_entry)))
1439 continue;
1440 gid_entry_mbox = (struct mlx4_roce_gid_entry *)(inbox->buf);
1441 for (j = 0; j < num_gids; gid_entry_mbox++, j++) {
1442 if (!memcmp(gid_entry_mbox->raw, zgid_entry.raw,
1443 sizeof(zgid_entry)))
1444 continue;
1445 if (!memcmp(gid_entry_mbox->raw, gid_entry_tbl->raw,
1446 sizeof(gid_entry_tbl->raw))) {
1447 /* found duplicate */
1448 mlx4_warn(dev, "requested gid entry for slave:%d is a duplicate of gid at index %d\n",
1449 slave, i);
1450 mutex_unlock(&(priv->port[port].gid_table.mutex));
1451 return -EINVAL;
1452 }
1453 }
1454 }
1455
1456 /* insert slave GIDs with memcpy, starting at slave's base index */
1457 gid_entry_mbox = (struct mlx4_roce_gid_entry *)(inbox->buf);
1458 for (i = 0, offset = base; i < num_gids; gid_entry_mbox++, offset++, i++)
1459 memcpy(priv->port[port].gid_table.roce_gids[offset].raw,
1460 gid_entry_mbox->raw, MLX4_ROCE_GID_ENTRY_SIZE);
1461
1462 /* Now, copy roce port gids table to current mailbox for passing to FW */
1463 gid_entry_mbox = (struct mlx4_roce_gid_entry *)(inbox->buf);
1464 for (i = 0; i < MLX4_ROCE_MAX_GIDS; gid_entry_mbox++, i++)
1465 memcpy(gid_entry_mbox->raw,
1466 priv->port[port].gid_table.roce_gids[i].raw,
1467 MLX4_ROCE_GID_ENTRY_SIZE);
1468
1469 err = mlx4_cmd(dev, inbox->dma, in_mod & 0xffff, op_mod,
1470 MLX4_CMD_SET_PORT, MLX4_CMD_TIME_CLASS_B,
1471 MLX4_CMD_NATIVE);
1472 mutex_unlock(&(priv->port[port].gid_table.mutex));
1473 return err;
1474 }
1475
1476 return mlx4_cmd(dev, inbox->dma, in_mod & 0xffff, op_mod,
1477 MLX4_CMD_SET_PORT, MLX4_CMD_TIME_CLASS_B,
1478 MLX4_CMD_NATIVE);
1479 }
1480
1481 /* Slaves are not allowed to SET_PORT beacon (LED) blink */
1482 if (op_mod == MLX4_SET_PORT_BEACON_OPCODE) {
1483 mlx4_warn(dev, "denying SET_PORT Beacon slave:%d\n", slave);
1484 return -EPERM;
1485 }
1486
1487 /* For IB, we only consider:
1488 * - The capability mask, which is set to the aggregate of all
1489 * slave function capabilities
1490 * - The QKey violatin counter - reset according to each request.
1491 */
1492
1493 if (dev->flags & MLX4_FLAG_OLD_PORT_CMDS) {
1494 reset_qkey_viols = (*(u8 *) inbox->buf) & 0x40;
1495 new_cap_mask = ((__be32 *) inbox->buf)[2];
1496 } else {
1497 reset_qkey_viols = ((u8 *) inbox->buf)[3] & 0x1;
1498 new_cap_mask = ((__be32 *) inbox->buf)[1];
1499 }
1500
1501 /* slave may not set the IS_SM capability for the port */
1502 if (slave != mlx4_master_func_num(dev) &&
1503 (be32_to_cpu(new_cap_mask) & MLX4_PORT_CAP_IS_SM))
1504 return -EINVAL;
1505
1506 /* No DEV_MGMT in multifunc mode */
1507 if (mlx4_is_mfunc(dev) &&
1508 (be32_to_cpu(new_cap_mask) & MLX4_PORT_CAP_DEV_MGMT_SUP))
1509 return -EINVAL;
1510
1511 agg_cap_mask = 0;
1512 slave_cap_mask =
1513 priv->mfunc.master.slave_state[slave].ib_cap_mask[port];
1514 priv->mfunc.master.slave_state[slave].ib_cap_mask[port] = new_cap_mask;
1515 for (i = 0; i < dev->num_slaves; i++)
1516 agg_cap_mask |=
1517 priv->mfunc.master.slave_state[i].ib_cap_mask[port];
1518
1519 /* only clear mailbox for guests. Master may be setting
1520 * MTU or PKEY table size
1521 */
1522 if (slave != dev->caps.function)
1523 memset(inbox->buf, 0, 256);
1524 if (dev->flags & MLX4_FLAG_OLD_PORT_CMDS) {
1525 *(u8 *) inbox->buf |= !!reset_qkey_viols << 6;
1526 ((__be32 *) inbox->buf)[2] = agg_cap_mask;
1527 } else {
1528 ((u8 *) inbox->buf)[3] |= !!reset_qkey_viols;
1529 ((__be32 *) inbox->buf)[1] = agg_cap_mask;
1530 }
1531
1532 err = mlx4_cmd(dev, inbox->dma, port, is_eth, MLX4_CMD_SET_PORT,
1533 MLX4_CMD_TIME_CLASS_B, MLX4_CMD_NATIVE);
1534 if (err)
1535 priv->mfunc.master.slave_state[slave].ib_cap_mask[port] =
1536 slave_cap_mask;
1537 return err;
1538 }
1539
mlx4_SET_PORT_wrapper(struct mlx4_dev * dev,int slave,struct mlx4_vhcr * vhcr,struct mlx4_cmd_mailbox * inbox,struct mlx4_cmd_mailbox * outbox,struct mlx4_cmd_info * cmd)1540 int mlx4_SET_PORT_wrapper(struct mlx4_dev *dev, int slave,
1541 struct mlx4_vhcr *vhcr,
1542 struct mlx4_cmd_mailbox *inbox,
1543 struct mlx4_cmd_mailbox *outbox,
1544 struct mlx4_cmd_info *cmd)
1545 {
1546 int port = mlx4_slave_convert_port(
1547 dev, slave, vhcr->in_modifier & 0xFF);
1548
1549 if (port < 0)
1550 return -EINVAL;
1551
1552 vhcr->in_modifier = (vhcr->in_modifier & ~0xFF) |
1553 (port & 0xFF);
1554
1555 return mlx4_common_set_port(dev, slave, vhcr->in_modifier,
1556 vhcr->op_modifier, inbox);
1557 }
1558
1559 /* bit locations for set port command with zero op modifier */
1560 enum {
1561 MLX4_SET_PORT_VL_CAP = 4, /* bits 7:4 */
1562 MLX4_SET_PORT_MTU_CAP = 12, /* bits 15:12 */
1563 MLX4_CHANGE_PORT_PKEY_TBL_SZ = 20,
1564 MLX4_CHANGE_PORT_VL_CAP = 21,
1565 MLX4_CHANGE_PORT_MTU_CAP = 22,
1566 };
1567
mlx4_SET_PORT(struct mlx4_dev * dev,u8 port,int pkey_tbl_sz)1568 int mlx4_SET_PORT(struct mlx4_dev *dev, u8 port, int pkey_tbl_sz)
1569 {
1570 struct mlx4_cmd_mailbox *mailbox;
1571 int err, vl_cap, pkey_tbl_flag = 0;
1572
1573 if (dev->caps.port_type[port] == MLX4_PORT_TYPE_ETH)
1574 return 0;
1575
1576 mailbox = mlx4_alloc_cmd_mailbox(dev);
1577 if (IS_ERR(mailbox))
1578 return PTR_ERR(mailbox);
1579
1580 ((__be32 *) mailbox->buf)[1] = dev->caps.ib_port_def_cap[port];
1581
1582 if (pkey_tbl_sz >= 0 && mlx4_is_master(dev)) {
1583 pkey_tbl_flag = 1;
1584 ((__be16 *) mailbox->buf)[20] = cpu_to_be16(pkey_tbl_sz);
1585 }
1586
1587 /* IB VL CAP enum isn't used by the firmware, just numerical values */
1588 for (vl_cap = 8; vl_cap >= 1; vl_cap >>= 1) {
1589 ((__be32 *) mailbox->buf)[0] = cpu_to_be32(
1590 (1 << MLX4_CHANGE_PORT_MTU_CAP) |
1591 (1 << MLX4_CHANGE_PORT_VL_CAP) |
1592 (pkey_tbl_flag << MLX4_CHANGE_PORT_PKEY_TBL_SZ) |
1593 (dev->caps.port_ib_mtu[port] << MLX4_SET_PORT_MTU_CAP) |
1594 (vl_cap << MLX4_SET_PORT_VL_CAP));
1595 err = mlx4_cmd(dev, mailbox->dma, port,
1596 MLX4_SET_PORT_IB_OPCODE, MLX4_CMD_SET_PORT,
1597 MLX4_CMD_TIME_CLASS_B, MLX4_CMD_WRAPPED);
1598 if (err != -ENOMEM)
1599 break;
1600 }
1601
1602 mlx4_free_cmd_mailbox(dev, mailbox);
1603 return err;
1604 }
1605
1606 #define SET_PORT_ROCE_2_FLAGS 0x10
1607 #define MLX4_SET_PORT_ROCE_V1_V2 0x2
mlx4_SET_PORT_general(struct mlx4_dev * dev,u8 port,int mtu,u8 pptx,u8 pfctx,u8 pprx,u8 pfcrx)1608 int mlx4_SET_PORT_general(struct mlx4_dev *dev, u8 port, int mtu,
1609 u8 pptx, u8 pfctx, u8 pprx, u8 pfcrx)
1610 {
1611 struct mlx4_cmd_mailbox *mailbox;
1612 struct mlx4_set_port_general_context *context;
1613 int err;
1614 u32 in_mod;
1615
1616 mailbox = mlx4_alloc_cmd_mailbox(dev);
1617 if (IS_ERR(mailbox))
1618 return PTR_ERR(mailbox);
1619 context = mailbox->buf;
1620 context->flags = SET_PORT_GEN_ALL_VALID;
1621 context->mtu = cpu_to_be16(mtu);
1622 context->pptx = (pptx * (!pfctx)) << 7;
1623 context->pfctx = pfctx;
1624 context->pprx = (pprx * (!pfcrx)) << 7;
1625 context->pfcrx = pfcrx;
1626
1627 if (dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_ROCE_V1_V2) {
1628 context->flags |= SET_PORT_ROCE_2_FLAGS;
1629 context->roce_mode |=
1630 MLX4_SET_PORT_ROCE_V1_V2 << 4;
1631 }
1632 in_mod = MLX4_SET_PORT_GENERAL << 8 | port;
1633 err = mlx4_cmd(dev, mailbox->dma, in_mod, MLX4_SET_PORT_ETH_OPCODE,
1634 MLX4_CMD_SET_PORT, MLX4_CMD_TIME_CLASS_B,
1635 MLX4_CMD_WRAPPED);
1636
1637 mlx4_free_cmd_mailbox(dev, mailbox);
1638 return err;
1639 }
1640 EXPORT_SYMBOL(mlx4_SET_PORT_general);
1641
mlx4_SET_PORT_qpn_calc(struct mlx4_dev * dev,u8 port,u32 base_qpn,u8 promisc)1642 int mlx4_SET_PORT_qpn_calc(struct mlx4_dev *dev, u8 port, u32 base_qpn,
1643 u8 promisc)
1644 {
1645 struct mlx4_cmd_mailbox *mailbox;
1646 struct mlx4_set_port_rqp_calc_context *context;
1647 int err;
1648 u32 in_mod;
1649 u32 m_promisc = (dev->caps.flags & MLX4_DEV_CAP_FLAG_VEP_MC_STEER) ?
1650 MCAST_DIRECT : MCAST_DEFAULT;
1651
1652 if (dev->caps.steering_mode != MLX4_STEERING_MODE_A0)
1653 return 0;
1654
1655 mailbox = mlx4_alloc_cmd_mailbox(dev);
1656 if (IS_ERR(mailbox))
1657 return PTR_ERR(mailbox);
1658 context = mailbox->buf;
1659 context->base_qpn = cpu_to_be32(base_qpn);
1660 context->n_mac = dev->caps.log_num_macs;
1661 context->promisc = cpu_to_be32(promisc << SET_PORT_PROMISC_SHIFT |
1662 base_qpn);
1663 context->mcast = cpu_to_be32(m_promisc << SET_PORT_MC_PROMISC_SHIFT |
1664 base_qpn);
1665 context->intra_no_vlan = 0;
1666 context->no_vlan = MLX4_NO_VLAN_IDX;
1667 context->intra_vlan_miss = 0;
1668 context->vlan_miss = MLX4_VLAN_MISS_IDX;
1669
1670 in_mod = MLX4_SET_PORT_RQP_CALC << 8 | port;
1671 err = mlx4_cmd(dev, mailbox->dma, in_mod, MLX4_SET_PORT_ETH_OPCODE,
1672 MLX4_CMD_SET_PORT, MLX4_CMD_TIME_CLASS_B,
1673 MLX4_CMD_WRAPPED);
1674
1675 mlx4_free_cmd_mailbox(dev, mailbox);
1676 return err;
1677 }
1678 EXPORT_SYMBOL(mlx4_SET_PORT_qpn_calc);
1679
mlx4_SET_PORT_user_mtu(struct mlx4_dev * dev,u8 port,u16 user_mtu)1680 int mlx4_SET_PORT_user_mtu(struct mlx4_dev *dev, u8 port, u16 user_mtu)
1681 {
1682 struct mlx4_cmd_mailbox *mailbox;
1683 struct mlx4_set_port_general_context *context;
1684 u32 in_mod;
1685 int err;
1686
1687 mailbox = mlx4_alloc_cmd_mailbox(dev);
1688 if (IS_ERR(mailbox))
1689 return PTR_ERR(mailbox);
1690 context = mailbox->buf;
1691 context->flags2 |= MLX4_FLAG2_V_USER_MTU_MASK;
1692 context->user_mtu = cpu_to_be16(user_mtu);
1693
1694 in_mod = MLX4_SET_PORT_GENERAL << 8 | port;
1695 err = mlx4_cmd(dev, mailbox->dma, in_mod, MLX4_SET_PORT_ETH_OPCODE,
1696 MLX4_CMD_SET_PORT, MLX4_CMD_TIME_CLASS_B,
1697 MLX4_CMD_WRAPPED);
1698
1699 mlx4_free_cmd_mailbox(dev, mailbox);
1700 return err;
1701 }
1702 EXPORT_SYMBOL(mlx4_SET_PORT_user_mtu);
1703
mlx4_SET_PORT_user_mac(struct mlx4_dev * dev,u8 port,u8 * user_mac)1704 int mlx4_SET_PORT_user_mac(struct mlx4_dev *dev, u8 port, u8 *user_mac)
1705 {
1706 struct mlx4_cmd_mailbox *mailbox;
1707 struct mlx4_set_port_general_context *context;
1708 u32 in_mod;
1709 int err;
1710
1711 mailbox = mlx4_alloc_cmd_mailbox(dev);
1712 if (IS_ERR(mailbox))
1713 return PTR_ERR(mailbox);
1714 context = mailbox->buf;
1715 context->flags2 |= MLX4_FLAG2_V_USER_MAC_MASK;
1716 memcpy(context->user_mac, user_mac, sizeof(context->user_mac));
1717
1718 in_mod = MLX4_SET_PORT_GENERAL << 8 | port;
1719 err = mlx4_cmd(dev, mailbox->dma, in_mod, MLX4_SET_PORT_ETH_OPCODE,
1720 MLX4_CMD_SET_PORT, MLX4_CMD_TIME_CLASS_B,
1721 MLX4_CMD_NATIVE);
1722
1723 mlx4_free_cmd_mailbox(dev, mailbox);
1724 return err;
1725 }
1726 EXPORT_SYMBOL(mlx4_SET_PORT_user_mac);
1727
mlx4_SET_PORT_fcs_check(struct mlx4_dev * dev,u8 port,u8 ignore_fcs_value)1728 int mlx4_SET_PORT_fcs_check(struct mlx4_dev *dev, u8 port, u8 ignore_fcs_value)
1729 {
1730 struct mlx4_cmd_mailbox *mailbox;
1731 struct mlx4_set_port_general_context *context;
1732 u32 in_mod;
1733 int err;
1734
1735 mailbox = mlx4_alloc_cmd_mailbox(dev);
1736 if (IS_ERR(mailbox))
1737 return PTR_ERR(mailbox);
1738 context = mailbox->buf;
1739 context->flags2 |= MLX4_FLAG2_V_IGNORE_FCS_MASK;
1740 if (ignore_fcs_value)
1741 context->ignore_fcs |= MLX4_IGNORE_FCS_MASK;
1742 else
1743 context->ignore_fcs &= ~MLX4_IGNORE_FCS_MASK;
1744
1745 in_mod = MLX4_SET_PORT_GENERAL << 8 | port;
1746 err = mlx4_cmd(dev, mailbox->dma, in_mod, 1, MLX4_CMD_SET_PORT,
1747 MLX4_CMD_TIME_CLASS_B, MLX4_CMD_NATIVE);
1748
1749 mlx4_free_cmd_mailbox(dev, mailbox);
1750 return err;
1751 }
1752 EXPORT_SYMBOL(mlx4_SET_PORT_fcs_check);
1753
1754 enum {
1755 VXLAN_ENABLE_MODIFY = 1 << 7,
1756 VXLAN_STEERING_MODIFY = 1 << 6,
1757
1758 VXLAN_ENABLE = 1 << 7,
1759 };
1760
1761 struct mlx4_set_port_vxlan_context {
1762 u32 reserved1;
1763 u8 modify_flags;
1764 u8 reserved2;
1765 u8 enable_flags;
1766 u8 steering;
1767 };
1768
mlx4_SET_PORT_VXLAN(struct mlx4_dev * dev,u8 port,u8 steering,int enable)1769 int mlx4_SET_PORT_VXLAN(struct mlx4_dev *dev, u8 port, u8 steering, int enable)
1770 {
1771 int err;
1772 u32 in_mod;
1773 struct mlx4_cmd_mailbox *mailbox;
1774 struct mlx4_set_port_vxlan_context *context;
1775
1776 mailbox = mlx4_alloc_cmd_mailbox(dev);
1777 if (IS_ERR(mailbox))
1778 return PTR_ERR(mailbox);
1779 context = mailbox->buf;
1780 memset(context, 0, sizeof(*context));
1781
1782 context->modify_flags = VXLAN_ENABLE_MODIFY | VXLAN_STEERING_MODIFY;
1783 if (enable)
1784 context->enable_flags = VXLAN_ENABLE;
1785 context->steering = steering;
1786
1787 in_mod = MLX4_SET_PORT_VXLAN << 8 | port;
1788 err = mlx4_cmd(dev, mailbox->dma, in_mod, MLX4_SET_PORT_ETH_OPCODE,
1789 MLX4_CMD_SET_PORT, MLX4_CMD_TIME_CLASS_B,
1790 MLX4_CMD_NATIVE);
1791
1792 mlx4_free_cmd_mailbox(dev, mailbox);
1793 return err;
1794 }
1795 EXPORT_SYMBOL(mlx4_SET_PORT_VXLAN);
1796
mlx4_SET_PORT_BEACON(struct mlx4_dev * dev,u8 port,u16 time)1797 int mlx4_SET_PORT_BEACON(struct mlx4_dev *dev, u8 port, u16 time)
1798 {
1799 int err;
1800 struct mlx4_cmd_mailbox *mailbox;
1801
1802 mailbox = mlx4_alloc_cmd_mailbox(dev);
1803 if (IS_ERR(mailbox))
1804 return PTR_ERR(mailbox);
1805
1806 *((__be32 *)mailbox->buf) = cpu_to_be32(time);
1807
1808 err = mlx4_cmd(dev, mailbox->dma, port, MLX4_SET_PORT_BEACON_OPCODE,
1809 MLX4_CMD_SET_PORT, MLX4_CMD_TIME_CLASS_B,
1810 MLX4_CMD_NATIVE);
1811
1812 mlx4_free_cmd_mailbox(dev, mailbox);
1813 return err;
1814 }
1815 EXPORT_SYMBOL(mlx4_SET_PORT_BEACON);
1816
mlx4_SET_MCAST_FLTR_wrapper(struct mlx4_dev * dev,int slave,struct mlx4_vhcr * vhcr,struct mlx4_cmd_mailbox * inbox,struct mlx4_cmd_mailbox * outbox,struct mlx4_cmd_info * cmd)1817 int mlx4_SET_MCAST_FLTR_wrapper(struct mlx4_dev *dev, int slave,
1818 struct mlx4_vhcr *vhcr,
1819 struct mlx4_cmd_mailbox *inbox,
1820 struct mlx4_cmd_mailbox *outbox,
1821 struct mlx4_cmd_info *cmd)
1822 {
1823 int err = 0;
1824
1825 return err;
1826 }
1827
mlx4_SET_MCAST_FLTR(struct mlx4_dev * dev,u8 port,u64 mac,u64 clear,u8 mode)1828 int mlx4_SET_MCAST_FLTR(struct mlx4_dev *dev, u8 port,
1829 u64 mac, u64 clear, u8 mode)
1830 {
1831 return mlx4_cmd(dev, (mac | (clear << 63)), port, mode,
1832 MLX4_CMD_SET_MCAST_FLTR, MLX4_CMD_TIME_CLASS_B,
1833 MLX4_CMD_WRAPPED);
1834 }
1835 EXPORT_SYMBOL(mlx4_SET_MCAST_FLTR);
1836
mlx4_SET_VLAN_FLTR_wrapper(struct mlx4_dev * dev,int slave,struct mlx4_vhcr * vhcr,struct mlx4_cmd_mailbox * inbox,struct mlx4_cmd_mailbox * outbox,struct mlx4_cmd_info * cmd)1837 int mlx4_SET_VLAN_FLTR_wrapper(struct mlx4_dev *dev, int slave,
1838 struct mlx4_vhcr *vhcr,
1839 struct mlx4_cmd_mailbox *inbox,
1840 struct mlx4_cmd_mailbox *outbox,
1841 struct mlx4_cmd_info *cmd)
1842 {
1843 int err = 0;
1844
1845 return err;
1846 }
1847
mlx4_DUMP_ETH_STATS_wrapper(struct mlx4_dev * dev,int slave,struct mlx4_vhcr * vhcr,struct mlx4_cmd_mailbox * inbox,struct mlx4_cmd_mailbox * outbox,struct mlx4_cmd_info * cmd)1848 int mlx4_DUMP_ETH_STATS_wrapper(struct mlx4_dev *dev, int slave,
1849 struct mlx4_vhcr *vhcr,
1850 struct mlx4_cmd_mailbox *inbox,
1851 struct mlx4_cmd_mailbox *outbox,
1852 struct mlx4_cmd_info *cmd)
1853 {
1854 return 0;
1855 }
1856
mlx4_get_slave_from_roce_gid(struct mlx4_dev * dev,int port,u8 * gid,int * slave_id)1857 int mlx4_get_slave_from_roce_gid(struct mlx4_dev *dev, int port, u8 *gid,
1858 int *slave_id)
1859 {
1860 struct mlx4_priv *priv = mlx4_priv(dev);
1861 int i, found_ix = -1;
1862 int vf_gids = MLX4_ROCE_MAX_GIDS - MLX4_ROCE_PF_GIDS;
1863 struct mlx4_slaves_pport slaves_pport;
1864 unsigned num_vfs;
1865 int slave_gid;
1866
1867 if (!mlx4_is_mfunc(dev))
1868 return -EINVAL;
1869
1870 slaves_pport = mlx4_phys_to_slaves_pport(dev, port);
1871 num_vfs = bitmap_weight(slaves_pport.slaves,
1872 dev->persist->num_vfs + 1) - 1;
1873
1874 for (i = 0; i < MLX4_ROCE_MAX_GIDS; i++) {
1875 if (!memcmp(priv->port[port].gid_table.roce_gids[i].raw, gid,
1876 MLX4_ROCE_GID_ENTRY_SIZE)) {
1877 found_ix = i;
1878 break;
1879 }
1880 }
1881
1882 if (found_ix >= 0) {
1883 /* Calculate a slave_gid which is the slave number in the gid
1884 * table and not a globally unique slave number.
1885 */
1886 if (found_ix < MLX4_ROCE_PF_GIDS)
1887 slave_gid = 0;
1888 else if (found_ix < MLX4_ROCE_PF_GIDS + (vf_gids % num_vfs) *
1889 (vf_gids / num_vfs + 1))
1890 slave_gid = ((found_ix - MLX4_ROCE_PF_GIDS) /
1891 (vf_gids / num_vfs + 1)) + 1;
1892 else
1893 slave_gid =
1894 ((found_ix - MLX4_ROCE_PF_GIDS -
1895 ((vf_gids % num_vfs) * ((vf_gids / num_vfs + 1)))) /
1896 (vf_gids / num_vfs)) + vf_gids % num_vfs + 1;
1897
1898 /* Calculate the globally unique slave id */
1899 if (slave_gid) {
1900 struct mlx4_active_ports exclusive_ports;
1901 struct mlx4_active_ports actv_ports;
1902 struct mlx4_slaves_pport slaves_pport_actv;
1903 unsigned max_port_p_one;
1904 int num_vfs_before = 0;
1905 int candidate_slave_gid;
1906
1907 /* Calculate how many VFs are on the previous port, if exists */
1908 for (i = 1; i < port; i++) {
1909 bitmap_zero(exclusive_ports.ports, dev->caps.num_ports);
1910 set_bit(i - 1, exclusive_ports.ports);
1911 slaves_pport_actv =
1912 mlx4_phys_to_slaves_pport_actv(
1913 dev, &exclusive_ports);
1914 num_vfs_before += bitmap_weight(
1915 slaves_pport_actv.slaves,
1916 dev->persist->num_vfs + 1);
1917 }
1918
1919 /* candidate_slave_gid isn't necessarily the correct slave, but
1920 * it has the same number of ports and is assigned to the same
1921 * ports as the real slave we're looking for. On dual port VF,
1922 * slave_gid = [single port VFs on port <port>] +
1923 * [offset of the current slave from the first dual port VF] +
1924 * 1 (for the PF).
1925 */
1926 candidate_slave_gid = slave_gid + num_vfs_before;
1927
1928 actv_ports = mlx4_get_active_ports(dev, candidate_slave_gid);
1929 max_port_p_one = find_first_bit(
1930 actv_ports.ports, dev->caps.num_ports) +
1931 bitmap_weight(actv_ports.ports,
1932 dev->caps.num_ports) + 1;
1933
1934 /* Calculate the real slave number */
1935 for (i = 1; i < max_port_p_one; i++) {
1936 if (i == port)
1937 continue;
1938 bitmap_zero(exclusive_ports.ports,
1939 dev->caps.num_ports);
1940 set_bit(i - 1, exclusive_ports.ports);
1941 slaves_pport_actv =
1942 mlx4_phys_to_slaves_pport_actv(
1943 dev, &exclusive_ports);
1944 slave_gid += bitmap_weight(
1945 slaves_pport_actv.slaves,
1946 dev->persist->num_vfs + 1);
1947 }
1948 }
1949 *slave_id = slave_gid;
1950 }
1951
1952 return (found_ix >= 0) ? 0 : -EINVAL;
1953 }
1954 EXPORT_SYMBOL(mlx4_get_slave_from_roce_gid);
1955
mlx4_get_roce_gid_from_slave(struct mlx4_dev * dev,int port,int slave_id,u8 * gid)1956 int mlx4_get_roce_gid_from_slave(struct mlx4_dev *dev, int port, int slave_id,
1957 u8 *gid)
1958 {
1959 struct mlx4_priv *priv = mlx4_priv(dev);
1960
1961 if (!mlx4_is_master(dev))
1962 return -EINVAL;
1963
1964 memcpy(gid, priv->port[port].gid_table.roce_gids[slave_id].raw,
1965 MLX4_ROCE_GID_ENTRY_SIZE);
1966 return 0;
1967 }
1968 EXPORT_SYMBOL(mlx4_get_roce_gid_from_slave);
1969
1970 /* Cable Module Info */
1971 #define MODULE_INFO_MAX_READ 48
1972
1973 #define I2C_ADDR_LOW 0x50
1974 #define I2C_ADDR_HIGH 0x51
1975 #define I2C_PAGE_SIZE 256
1976 #define I2C_HIGH_PAGE_SIZE 128
1977
1978 /* Module Info Data */
1979 struct mlx4_cable_info {
1980 u8 i2c_addr;
1981 u8 page_num;
1982 __be16 dev_mem_address;
1983 __be16 reserved1;
1984 __be16 size;
1985 __be32 reserved2[2];
1986 u8 data[MODULE_INFO_MAX_READ];
1987 };
1988
1989 enum cable_info_err {
1990 CABLE_INF_INV_PORT = 0x1,
1991 CABLE_INF_OP_NOSUP = 0x2,
1992 CABLE_INF_NOT_CONN = 0x3,
1993 CABLE_INF_NO_EEPRM = 0x4,
1994 CABLE_INF_PAGE_ERR = 0x5,
1995 CABLE_INF_INV_ADDR = 0x6,
1996 CABLE_INF_I2C_ADDR = 0x7,
1997 CABLE_INF_QSFP_VIO = 0x8,
1998 CABLE_INF_I2C_BUSY = 0x9,
1999 };
2000
2001 #define MAD_STATUS_2_CABLE_ERR(mad_status) ((mad_status >> 8) & 0xFF)
2002
cable_info_mad_err_str(u16 mad_status)2003 static inline const char *cable_info_mad_err_str(u16 mad_status)
2004 {
2005 u8 err = MAD_STATUS_2_CABLE_ERR(mad_status);
2006
2007 switch (err) {
2008 case CABLE_INF_INV_PORT:
2009 return "invalid port selected";
2010 case CABLE_INF_OP_NOSUP:
2011 return "operation not supported for this port (the port is of type CX4 or internal)";
2012 case CABLE_INF_NOT_CONN:
2013 return "cable is not connected";
2014 case CABLE_INF_NO_EEPRM:
2015 return "the connected cable has no EPROM (passive copper cable)";
2016 case CABLE_INF_PAGE_ERR:
2017 return "page number is greater than 15";
2018 case CABLE_INF_INV_ADDR:
2019 return "invalid device_address or size (that is, size equals 0 or address+size is greater than 256)";
2020 case CABLE_INF_I2C_ADDR:
2021 return "invalid I2C slave address";
2022 case CABLE_INF_QSFP_VIO:
2023 return "at least one cable violates the QSFP specification and ignores the modsel signal";
2024 case CABLE_INF_I2C_BUSY:
2025 return "I2C bus is constantly busy";
2026 }
2027 return "Unknown Error";
2028 }
2029
mlx4_get_module_id(struct mlx4_dev * dev,u8 port,u8 * module_id)2030 static int mlx4_get_module_id(struct mlx4_dev *dev, u8 port, u8 *module_id)
2031 {
2032 struct mlx4_cmd_mailbox *inbox, *outbox;
2033 struct mlx4_mad_ifc *inmad, *outmad;
2034 struct mlx4_cable_info *cable_info;
2035 int ret;
2036
2037 inbox = mlx4_alloc_cmd_mailbox(dev);
2038 if (IS_ERR(inbox))
2039 return PTR_ERR(inbox);
2040
2041 outbox = mlx4_alloc_cmd_mailbox(dev);
2042 if (IS_ERR(outbox)) {
2043 mlx4_free_cmd_mailbox(dev, inbox);
2044 return PTR_ERR(outbox);
2045 }
2046
2047 inmad = (struct mlx4_mad_ifc *)(inbox->buf);
2048 outmad = (struct mlx4_mad_ifc *)(outbox->buf);
2049
2050 inmad->method = 0x1; /* Get */
2051 inmad->class_version = 0x1;
2052 inmad->mgmt_class = 0x1;
2053 inmad->base_version = 0x1;
2054 inmad->attr_id = cpu_to_be16(0xFF60); /* Module Info */
2055
2056 cable_info = (struct mlx4_cable_info *)inmad->data;
2057 cable_info->dev_mem_address = 0;
2058 cable_info->page_num = 0;
2059 cable_info->i2c_addr = I2C_ADDR_LOW;
2060 cable_info->size = cpu_to_be16(1);
2061
2062 ret = mlx4_cmd_box(dev, inbox->dma, outbox->dma, port, 3,
2063 MLX4_CMD_MAD_IFC, MLX4_CMD_TIME_CLASS_C,
2064 MLX4_CMD_NATIVE);
2065 if (ret)
2066 goto out;
2067
2068 if (be16_to_cpu(outmad->status)) {
2069 /* Mad returned with bad status */
2070 ret = be16_to_cpu(outmad->status);
2071 mlx4_warn(dev,
2072 "MLX4_CMD_MAD_IFC Get Module ID attr(%x) port(%d) i2c_addr(%x) offset(%d) size(%d): Response Mad Status(%x) - %s\n",
2073 0xFF60, port, I2C_ADDR_LOW, 0, 1, ret,
2074 cable_info_mad_err_str(ret));
2075 ret = -ret;
2076 goto out;
2077 }
2078 cable_info = (struct mlx4_cable_info *)outmad->data;
2079 *module_id = cable_info->data[0];
2080 out:
2081 mlx4_free_cmd_mailbox(dev, inbox);
2082 mlx4_free_cmd_mailbox(dev, outbox);
2083 return ret;
2084 }
2085
mlx4_sfp_eeprom_params_set(u8 * i2c_addr,u8 * page_num,u16 * offset)2086 static void mlx4_sfp_eeprom_params_set(u8 *i2c_addr, u8 *page_num, u16 *offset)
2087 {
2088 *i2c_addr = I2C_ADDR_LOW;
2089 *page_num = 0;
2090
2091 if (*offset < I2C_PAGE_SIZE)
2092 return;
2093
2094 *i2c_addr = I2C_ADDR_HIGH;
2095 *offset -= I2C_PAGE_SIZE;
2096 }
2097
mlx4_qsfp_eeprom_params_set(u8 * i2c_addr,u8 * page_num,u16 * offset)2098 static void mlx4_qsfp_eeprom_params_set(u8 *i2c_addr, u8 *page_num, u16 *offset)
2099 {
2100 /* Offsets 0-255 belong to page 0.
2101 * Offsets 256-639 belong to pages 01, 02, 03.
2102 * For example, offset 400 is page 02: 1 + (400 - 256) / 128 = 2
2103 */
2104 if (*offset < I2C_PAGE_SIZE)
2105 *page_num = 0;
2106 else
2107 *page_num = 1 + (*offset - I2C_PAGE_SIZE) / I2C_HIGH_PAGE_SIZE;
2108 *i2c_addr = I2C_ADDR_LOW;
2109 *offset -= *page_num * I2C_HIGH_PAGE_SIZE;
2110 }
2111
2112 /**
2113 * mlx4_get_module_info - Read cable module eeprom data
2114 * @dev: mlx4_dev.
2115 * @port: port number.
2116 * @offset: byte offset in eeprom to start reading data from.
2117 * @size: num of bytes to read.
2118 * @data: output buffer to put the requested data into.
2119 *
2120 * Reads cable module eeprom data, puts the outcome data into
2121 * data pointer parameter.
2122 * Returns num of read bytes on success or a negative error
2123 * code.
2124 */
mlx4_get_module_info(struct mlx4_dev * dev,u8 port,u16 offset,u16 size,u8 * data)2125 int mlx4_get_module_info(struct mlx4_dev *dev, u8 port,
2126 u16 offset, u16 size, u8 *data)
2127 {
2128 struct mlx4_cmd_mailbox *inbox, *outbox;
2129 struct mlx4_mad_ifc *inmad, *outmad;
2130 struct mlx4_cable_info *cable_info;
2131 u8 module_id, i2c_addr, page_num;
2132 int ret;
2133
2134 if (size > MODULE_INFO_MAX_READ)
2135 size = MODULE_INFO_MAX_READ;
2136
2137 ret = mlx4_get_module_id(dev, port, &module_id);
2138 if (ret)
2139 return ret;
2140
2141 switch (module_id) {
2142 case MLX4_MODULE_ID_SFP:
2143 mlx4_sfp_eeprom_params_set(&i2c_addr, &page_num, &offset);
2144 break;
2145 case MLX4_MODULE_ID_QSFP:
2146 case MLX4_MODULE_ID_QSFP_PLUS:
2147 case MLX4_MODULE_ID_QSFP28:
2148 mlx4_qsfp_eeprom_params_set(&i2c_addr, &page_num, &offset);
2149 break;
2150 default:
2151 mlx4_err(dev, "Module ID not recognized: %#x\n", module_id);
2152 return -EINVAL;
2153 }
2154
2155 inbox = mlx4_alloc_cmd_mailbox(dev);
2156 if (IS_ERR(inbox))
2157 return PTR_ERR(inbox);
2158
2159 outbox = mlx4_alloc_cmd_mailbox(dev);
2160 if (IS_ERR(outbox)) {
2161 mlx4_free_cmd_mailbox(dev, inbox);
2162 return PTR_ERR(outbox);
2163 }
2164
2165 inmad = (struct mlx4_mad_ifc *)(inbox->buf);
2166 outmad = (struct mlx4_mad_ifc *)(outbox->buf);
2167
2168 inmad->method = 0x1; /* Get */
2169 inmad->class_version = 0x1;
2170 inmad->mgmt_class = 0x1;
2171 inmad->base_version = 0x1;
2172 inmad->attr_id = cpu_to_be16(0xFF60); /* Module Info */
2173
2174 if (offset < I2C_PAGE_SIZE && offset + size > I2C_PAGE_SIZE)
2175 /* Cross pages reads are not allowed
2176 * read until offset 256 in low page
2177 */
2178 size -= offset + size - I2C_PAGE_SIZE;
2179
2180 cable_info = (struct mlx4_cable_info *)inmad->data;
2181 cable_info->dev_mem_address = cpu_to_be16(offset);
2182 cable_info->page_num = page_num;
2183 cable_info->i2c_addr = i2c_addr;
2184 cable_info->size = cpu_to_be16(size);
2185
2186 ret = mlx4_cmd_box(dev, inbox->dma, outbox->dma, port, 3,
2187 MLX4_CMD_MAD_IFC, MLX4_CMD_TIME_CLASS_C,
2188 MLX4_CMD_NATIVE);
2189 if (ret)
2190 goto out;
2191
2192 if (be16_to_cpu(outmad->status)) {
2193 /* Mad returned with bad status */
2194 ret = be16_to_cpu(outmad->status);
2195 mlx4_warn(dev,
2196 "MLX4_CMD_MAD_IFC Get Module info attr(%x) port(%d) i2c_addr(%x) offset(%d) size(%d): Response Mad Status(%x) - %s\n",
2197 0xFF60, port, i2c_addr, offset, size,
2198 ret, cable_info_mad_err_str(ret));
2199
2200 if (i2c_addr == I2C_ADDR_HIGH &&
2201 MAD_STATUS_2_CABLE_ERR(ret) == CABLE_INF_I2C_ADDR)
2202 /* Some SFP cables do not support i2c slave
2203 * address 0x51 (high page), abort silently.
2204 */
2205 ret = 0;
2206 else
2207 ret = -ret;
2208 goto out;
2209 }
2210 cable_info = (struct mlx4_cable_info *)outmad->data;
2211 memcpy(data, cable_info->data, size);
2212 ret = size;
2213 out:
2214 mlx4_free_cmd_mailbox(dev, inbox);
2215 mlx4_free_cmd_mailbox(dev, outbox);
2216 return ret;
2217 }
2218 EXPORT_SYMBOL(mlx4_get_module_info);
2219
mlx4_max_tc(struct mlx4_dev * dev)2220 int mlx4_max_tc(struct mlx4_dev *dev)
2221 {
2222 u8 num_tc = dev->caps.max_tc_eth;
2223
2224 if (!num_tc)
2225 num_tc = MLX4_TC_MAX_NUMBER;
2226
2227 return num_tc;
2228 }
2229 EXPORT_SYMBOL(mlx4_max_tc);
2230