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pvrusb2: reduce stack usage pvr2_eeprom_analyze()
[linux/fpc-iii.git] / drivers / net / ethernet / mellanox / mlx4 / port.c
blobb656dd5772e5b9ae3412d11dc8791c49fb10a78f
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_FLAG_V_IGNORE_FCS_MASK 0x2
54 #define MLX4_IGNORE_FCS_MASK 0x1
55 #define MLX4_TC_MAX_NUMBER 8
56
57 void mlx4_init_mac_table(struct mlx4_dev *dev, struct mlx4_mac_table *table)
58 {
59 int i;
60
61 mutex_init(&table->mutex);
62 for (i = 0; i < MLX4_MAX_MAC_NUM; i++) {
63 table->entries[i] = 0;
64 table->refs[i] = 0;
65 table->is_dup[i] = false;
66 }
67 table->max = 1 << dev->caps.log_num_macs;
68 table->total = 0;
69 }
70
71 void mlx4_init_vlan_table(struct mlx4_dev *dev, struct mlx4_vlan_table *table)
72 {
73 int i;
74
75 mutex_init(&table->mutex);
76 for (i = 0; i < MLX4_MAX_VLAN_NUM; i++) {
77 table->entries[i] = 0;
78 table->refs[i] = 0;
79 table->is_dup[i] = false;
80 }
81 table->max = (1 << dev->caps.log_num_vlans) - MLX4_VLAN_REGULAR;
82 table->total = 0;
83 }
84
85 void mlx4_init_roce_gid_table(struct mlx4_dev *dev,
86 struct mlx4_roce_gid_table *table)
87 {
88 int i;
89
90 mutex_init(&table->mutex);
91 for (i = 0; i < MLX4_ROCE_MAX_GIDS; i++)
92 memset(table->roce_gids[i].raw, 0, MLX4_ROCE_GID_ENTRY_SIZE);
93 }
94
95 static int validate_index(struct mlx4_dev *dev,
96 struct mlx4_mac_table *table, int index)
97 {
98 int err = 0;
99
100 if (index < 0 || index >= table->max || !table->entries[index]) {
101 mlx4_warn(dev, "No valid Mac entry for the given index\n");
102 err = -EINVAL;
103 }
104 return err;
105 }
106
107 static int find_index(struct mlx4_dev *dev,
108 struct mlx4_mac_table *table, u64 mac)
109 {
110 int i;
111
112 for (i = 0; i < MLX4_MAX_MAC_NUM; i++) {
113 if (table->refs[i] &&
114 (MLX4_MAC_MASK & mac) ==
115 (MLX4_MAC_MASK & be64_to_cpu(table->entries[i])))
116 return i;
117 }
118 /* Mac not found */
119 return -EINVAL;
120 }
121
122 static int mlx4_set_port_mac_table(struct mlx4_dev *dev, u8 port,
123 __be64 *entries)
124 {
125 struct mlx4_cmd_mailbox *mailbox;
126 u32 in_mod;
127 int err;
128
129 mailbox = mlx4_alloc_cmd_mailbox(dev);
130 if (IS_ERR(mailbox))
131 return PTR_ERR(mailbox);
132
133 memcpy(mailbox->buf, entries, MLX4_MAC_TABLE_SIZE);
134
135 in_mod = MLX4_SET_PORT_MAC_TABLE << 8 | port;
136
137 err = mlx4_cmd(dev, mailbox->dma, in_mod, MLX4_SET_PORT_ETH_OPCODE,
138 MLX4_CMD_SET_PORT, MLX4_CMD_TIME_CLASS_B,
139 MLX4_CMD_NATIVE);
140
141 mlx4_free_cmd_mailbox(dev, mailbox);
142 return err;
143 }
144
145 int mlx4_find_cached_mac(struct mlx4_dev *dev, u8 port, u64 mac, int *idx)
146 {
147 struct mlx4_port_info *info = &mlx4_priv(dev)->port[port];
148 struct mlx4_mac_table *table = &info->mac_table;
149 int i;
150
151 for (i = 0; i < MLX4_MAX_MAC_NUM; i++) {
152 if (!table->refs[i])
153 continue;
154
155 if (mac == (MLX4_MAC_MASK & be64_to_cpu(table->entries[i]))) {
156 *idx = i;
157 return 0;
158 }
159 }
160
161 return -ENOENT;
162 }
163 EXPORT_SYMBOL_GPL(mlx4_find_cached_mac);
164
165 static bool mlx4_need_mf_bond(struct mlx4_dev *dev)
166 {
167 int i, num_eth_ports = 0;
168
169 if (!mlx4_is_mfunc(dev))
170 return false;
171 mlx4_foreach_port(i, dev, MLX4_PORT_TYPE_ETH)
172 ++num_eth_ports;
173
174 return (num_eth_ports == 2) ? true : false;
175 }
176
177 int __mlx4_register_mac(struct mlx4_dev *dev, u8 port, u64 mac)
178 {
179 struct mlx4_port_info *info = &mlx4_priv(dev)->port[port];
180 struct mlx4_mac_table *table = &info->mac_table;
181 int i, err = 0;
182 int free = -1;
183 int free_for_dup = -1;
184 bool dup = mlx4_is_mf_bonded(dev);
185 u8 dup_port = (port == 1) ? 2 : 1;
186 struct mlx4_mac_table *dup_table = &mlx4_priv(dev)->port[dup_port].mac_table;
187 bool need_mf_bond = mlx4_need_mf_bond(dev);
188 bool can_mf_bond = true;
189
190 mlx4_dbg(dev, "Registering MAC: 0x%llx for port %d %s duplicate\n",
191 (unsigned long long)mac, port,
192 dup ? "with" : "without");
193
194 if (need_mf_bond) {
195 if (port == 1) {
196 mutex_lock(&table->mutex);
197 mutex_lock_nested(&dup_table->mutex, SINGLE_DEPTH_NESTING);
198 } else {
199 mutex_lock(&dup_table->mutex);
200 mutex_lock_nested(&table->mutex, SINGLE_DEPTH_NESTING);
201 }
202 } else {
203 mutex_lock(&table->mutex);
204 }
205
206 if (need_mf_bond) {
207 int index_at_port = -1;
208 int index_at_dup_port = -1;
209
210 for (i = 0; i < MLX4_MAX_MAC_NUM; i++) {
211 if (((MLX4_MAC_MASK & mac) == (MLX4_MAC_MASK & be64_to_cpu(table->entries[i]))))
212 index_at_port = i;
213 if (((MLX4_MAC_MASK & mac) == (MLX4_MAC_MASK & be64_to_cpu(dup_table->entries[i]))))
214 index_at_dup_port = i;
215 }
216
217 /* check that same mac is not in the tables at different indices */
218 if ((index_at_port != index_at_dup_port) &&
219 (index_at_port >= 0) &&
220 (index_at_dup_port >= 0))
221 can_mf_bond = false;
222
223 /* If the mac is already in the primary table, the slot must be
224 * available in the duplicate table as well.
225 */
226 if (index_at_port >= 0 && index_at_dup_port < 0 &&
227 dup_table->refs[index_at_port]) {
228 can_mf_bond = false;
229 }
230 /* If the mac is already in the duplicate table, check that the
231 * corresponding index is not occupied in the primary table, or
232 * the primary table already contains the mac at the same index.
233 * Otherwise, you cannot bond (primary contains a different mac
234 * at that index).
235 */
236 if (index_at_dup_port >= 0) {
237 if (!table->refs[index_at_dup_port] ||
238 ((MLX4_MAC_MASK & mac) == (MLX4_MAC_MASK & be64_to_cpu(table->entries[index_at_dup_port]))))
239 free_for_dup = index_at_dup_port;
240 else
241 can_mf_bond = false;
242 }
243 }
244
245 for (i = 0; i < MLX4_MAX_MAC_NUM; i++) {
246 if (!table->refs[i]) {
247 if (free < 0)
248 free = i;
249 if (free_for_dup < 0 && need_mf_bond && can_mf_bond) {
250 if (!dup_table->refs[i])
251 free_for_dup = i;
252 }
253 continue;
254 }
255
256 if ((MLX4_MAC_MASK & mac) ==
257 (MLX4_MAC_MASK & be64_to_cpu(table->entries[i]))) {
258 /* MAC already registered, increment ref count */
259 err = i;
260 ++table->refs[i];
261 if (dup) {
262 u64 dup_mac = MLX4_MAC_MASK & be64_to_cpu(dup_table->entries[i]);
263
264 if (dup_mac != mac || !dup_table->is_dup[i]) {
265 mlx4_warn(dev, "register mac: expect duplicate mac 0x%llx on port %d index %d\n",
266 mac, dup_port, i);
267 }
268 }
269 goto out;
270 }
271 }
272
273 if (need_mf_bond && (free_for_dup < 0)) {
274 if (dup) {
275 mlx4_warn(dev, "Fail to allocate duplicate MAC table entry\n");
276 mlx4_warn(dev, "High Availability for virtual functions may not work as expected\n");
277 dup = false;
278 }
279 can_mf_bond = false;
280 }
281
282 if (need_mf_bond && can_mf_bond)
283 free = free_for_dup;
284
285 mlx4_dbg(dev, "Free MAC index is %d\n", free);
286
287 if (table->total == table->max) {
288 /* No free mac entries */
289 err = -ENOSPC;
290 goto out;
291 }
292
293 /* Register new MAC */
294 table->entries[free] = cpu_to_be64(mac | MLX4_MAC_VALID);
295
296 err = mlx4_set_port_mac_table(dev, port, table->entries);
297 if (unlikely(err)) {
298 mlx4_err(dev, "Failed adding MAC: 0x%llx\n",
299 (unsigned long long) mac);
300 table->entries[free] = 0;
301 goto out;
302 }
303 table->refs[free] = 1;
304 table->is_dup[free] = false;
305 ++table->total;
306 if (dup) {
307 dup_table->refs[free] = 0;
308 dup_table->is_dup[free] = true;
309 dup_table->entries[free] = cpu_to_be64(mac | MLX4_MAC_VALID);
310
311 err = mlx4_set_port_mac_table(dev, dup_port, dup_table->entries);
312 if (unlikely(err)) {
313 mlx4_warn(dev, "Failed adding duplicate mac: 0x%llx\n", mac);
314 dup_table->is_dup[free] = false;
315 dup_table->entries[free] = 0;
316 goto out;
317 }
318 ++dup_table->total;
319 }
320 err = free;
321 out:
322 if (need_mf_bond) {
323 if (port == 2) {
324 mutex_unlock(&table->mutex);
325 mutex_unlock(&dup_table->mutex);
326 } else {
327 mutex_unlock(&dup_table->mutex);
328 mutex_unlock(&table->mutex);
329 }
330 } else {
331 mutex_unlock(&table->mutex);
332 }
333 return err;
334 }
335 EXPORT_SYMBOL_GPL(__mlx4_register_mac);
336
337 int mlx4_register_mac(struct mlx4_dev *dev, u8 port, u64 mac)
338 {
339 u64 out_param = 0;
340 int err = -EINVAL;
341
342 if (mlx4_is_mfunc(dev)) {
343 if (!(dev->flags & MLX4_FLAG_OLD_REG_MAC)) {
344 err = mlx4_cmd_imm(dev, mac, &out_param,
345 ((u32) port) << 8 | (u32) RES_MAC,
346 RES_OP_RESERVE_AND_MAP, MLX4_CMD_ALLOC_RES,
347 MLX4_CMD_TIME_CLASS_A, MLX4_CMD_WRAPPED);
348 }
349 if (err && err == -EINVAL && mlx4_is_slave(dev)) {
350 /* retry using old REG_MAC format */
351 set_param_l(&out_param, port);
352 err = mlx4_cmd_imm(dev, mac, &out_param, RES_MAC,
353 RES_OP_RESERVE_AND_MAP, MLX4_CMD_ALLOC_RES,
354 MLX4_CMD_TIME_CLASS_A, MLX4_CMD_WRAPPED);
355 if (!err)
356 dev->flags |= MLX4_FLAG_OLD_REG_MAC;
357 }
358 if (err)
359 return err;
360
361 return get_param_l(&out_param);
362 }
363 return __mlx4_register_mac(dev, port, mac);
364 }
365 EXPORT_SYMBOL_GPL(mlx4_register_mac);
366
367 int mlx4_get_base_qpn(struct mlx4_dev *dev, u8 port)
368 {
369 return dev->caps.reserved_qps_base[MLX4_QP_REGION_ETH_ADDR] +
370 (port - 1) * (1 << dev->caps.log_num_macs);
371 }
372 EXPORT_SYMBOL_GPL(mlx4_get_base_qpn);
373
374 void __mlx4_unregister_mac(struct mlx4_dev *dev, u8 port, u64 mac)
375 {
376 struct mlx4_port_info *info;
377 struct mlx4_mac_table *table;
378 int index;
379 bool dup = mlx4_is_mf_bonded(dev);
380 u8 dup_port = (port == 1) ? 2 : 1;
381 struct mlx4_mac_table *dup_table = &mlx4_priv(dev)->port[dup_port].mac_table;
382
383 if (port < 1 || port > dev->caps.num_ports) {
384 mlx4_warn(dev, "invalid port number (%d), aborting...\n", port);
385 return;
386 }
387 info = &mlx4_priv(dev)->port[port];
388 table = &info->mac_table;
389
390 if (dup) {
391 if (port == 1) {
392 mutex_lock(&table->mutex);
393 mutex_lock_nested(&dup_table->mutex, SINGLE_DEPTH_NESTING);
394 } else {
395 mutex_lock(&dup_table->mutex);
396 mutex_lock_nested(&table->mutex, SINGLE_DEPTH_NESTING);
397 }
398 } else {
399 mutex_lock(&table->mutex);
400 }
401
402 index = find_index(dev, table, mac);
403
404 if (validate_index(dev, table, index))
405 goto out;
406
407 if (--table->refs[index] || table->is_dup[index]) {
408 mlx4_dbg(dev, "Have more references for index %d, no need to modify mac table\n",
409 index);
410 if (!table->refs[index])
411 dup_table->is_dup[index] = false;
412 goto out;
413 }
414
415 table->entries[index] = 0;
416 if (mlx4_set_port_mac_table(dev, port, table->entries))
417 mlx4_warn(dev, "Fail to set mac in port %d during unregister\n", port);
418 --table->total;
419
420 if (dup) {
421 dup_table->is_dup[index] = false;
422 if (dup_table->refs[index])
423 goto out;
424 dup_table->entries[index] = 0;
425 if (mlx4_set_port_mac_table(dev, dup_port, dup_table->entries))
426 mlx4_warn(dev, "Fail to set mac in duplicate port %d during unregister\n", dup_port);
427
428 --table->total;
429 }
430 out:
431 if (dup) {
432 if (port == 2) {
433 mutex_unlock(&table->mutex);
434 mutex_unlock(&dup_table->mutex);
435 } else {
436 mutex_unlock(&dup_table->mutex);
437 mutex_unlock(&table->mutex);
438 }
439 } else {
440 mutex_unlock(&table->mutex);
441 }
442 }
443 EXPORT_SYMBOL_GPL(__mlx4_unregister_mac);
444
445 void mlx4_unregister_mac(struct mlx4_dev *dev, u8 port, u64 mac)
446 {
447 u64 out_param = 0;
448
449 if (mlx4_is_mfunc(dev)) {
450 if (!(dev->flags & MLX4_FLAG_OLD_REG_MAC)) {
451 (void) mlx4_cmd_imm(dev, mac, &out_param,
452 ((u32) port) << 8 | (u32) RES_MAC,
453 RES_OP_RESERVE_AND_MAP, MLX4_CMD_FREE_RES,
454 MLX4_CMD_TIME_CLASS_A, MLX4_CMD_WRAPPED);
455 } else {
456 /* use old unregister mac format */
457 set_param_l(&out_param, port);
458 (void) mlx4_cmd_imm(dev, mac, &out_param, RES_MAC,
459 RES_OP_RESERVE_AND_MAP, MLX4_CMD_FREE_RES,
460 MLX4_CMD_TIME_CLASS_A, MLX4_CMD_WRAPPED);
461 }
462 return;
463 }
464 __mlx4_unregister_mac(dev, port, mac);
465 return;
466 }
467 EXPORT_SYMBOL_GPL(mlx4_unregister_mac);
468
469 int __mlx4_replace_mac(struct mlx4_dev *dev, u8 port, int qpn, u64 new_mac)
470 {
471 struct mlx4_port_info *info = &mlx4_priv(dev)->port[port];
472 struct mlx4_mac_table *table = &info->mac_table;
473 int index = qpn - info->base_qpn;
474 int err = 0;
475 bool dup = mlx4_is_mf_bonded(dev);
476 u8 dup_port = (port == 1) ? 2 : 1;
477 struct mlx4_mac_table *dup_table = &mlx4_priv(dev)->port[dup_port].mac_table;
478
479 /* CX1 doesn't support multi-functions */
480 if (dup) {
481 if (port == 1) {
482 mutex_lock(&table->mutex);
483 mutex_lock_nested(&dup_table->mutex, SINGLE_DEPTH_NESTING);
484 } else {
485 mutex_lock(&dup_table->mutex);
486 mutex_lock_nested(&table->mutex, SINGLE_DEPTH_NESTING);
487 }
488 } else {
489 mutex_lock(&table->mutex);
490 }
491
492 err = validate_index(dev, table, index);
493 if (err)
494 goto out;
495
496 table->entries[index] = cpu_to_be64(new_mac | MLX4_MAC_VALID);
497
498 err = mlx4_set_port_mac_table(dev, port, table->entries);
499 if (unlikely(err)) {
500 mlx4_err(dev, "Failed adding MAC: 0x%llx\n",
501 (unsigned long long) new_mac);
502 table->entries[index] = 0;
503 } else {
504 if (dup) {
505 dup_table->entries[index] = cpu_to_be64(new_mac | MLX4_MAC_VALID);
506
507 err = mlx4_set_port_mac_table(dev, dup_port, dup_table->entries);
508 if (unlikely(err)) {
509 mlx4_err(dev, "Failed adding duplicate MAC: 0x%llx\n",
510 (unsigned long long)new_mac);
511 dup_table->entries[index] = 0;
512 }
513 }
514 }
515 out:
516 if (dup) {
517 if (port == 2) {
518 mutex_unlock(&table->mutex);
519 mutex_unlock(&dup_table->mutex);
520 } else {
521 mutex_unlock(&dup_table->mutex);
522 mutex_unlock(&table->mutex);
523 }
524 } else {
525 mutex_unlock(&table->mutex);
526 }
527 return err;
528 }
529 EXPORT_SYMBOL_GPL(__mlx4_replace_mac);
530
531 static int mlx4_set_port_vlan_table(struct mlx4_dev *dev, u8 port,
532 __be32 *entries)
533 {
534 struct mlx4_cmd_mailbox *mailbox;
535 u32 in_mod;
536 int err;
537
538 mailbox = mlx4_alloc_cmd_mailbox(dev);
539 if (IS_ERR(mailbox))
540 return PTR_ERR(mailbox);
541
542 memcpy(mailbox->buf, entries, MLX4_VLAN_TABLE_SIZE);
543 in_mod = MLX4_SET_PORT_VLAN_TABLE << 8 | port;
544 err = mlx4_cmd(dev, mailbox->dma, in_mod, MLX4_SET_PORT_ETH_OPCODE,
545 MLX4_CMD_SET_PORT, MLX4_CMD_TIME_CLASS_B,
546 MLX4_CMD_NATIVE);
547
548 mlx4_free_cmd_mailbox(dev, mailbox);
549
550 return err;
551 }
552
553 int mlx4_find_cached_vlan(struct mlx4_dev *dev, u8 port, u16 vid, int *idx)
554 {
555 struct mlx4_vlan_table *table = &mlx4_priv(dev)->port[port].vlan_table;
556 int i;
557
558 for (i = 0; i < MLX4_MAX_VLAN_NUM; ++i) {
559 if (table->refs[i] &&
560 (vid == (MLX4_VLAN_MASK &
561 be32_to_cpu(table->entries[i])))) {
562 /* VLAN already registered, increase reference count */
563 *idx = i;
564 return 0;
565 }
566 }
567
568 return -ENOENT;
569 }
570 EXPORT_SYMBOL_GPL(mlx4_find_cached_vlan);
571
572 int __mlx4_register_vlan(struct mlx4_dev *dev, u8 port, u16 vlan,
573 int *index)
574 {
575 struct mlx4_vlan_table *table = &mlx4_priv(dev)->port[port].vlan_table;
576 int i, err = 0;
577 int free = -1;
578 int free_for_dup = -1;
579 bool dup = mlx4_is_mf_bonded(dev);
580 u8 dup_port = (port == 1) ? 2 : 1;
581 struct mlx4_vlan_table *dup_table = &mlx4_priv(dev)->port[dup_port].vlan_table;
582 bool need_mf_bond = mlx4_need_mf_bond(dev);
583 bool can_mf_bond = true;
584
585 mlx4_dbg(dev, "Registering VLAN: %d for port %d %s duplicate\n",
586 vlan, port,
587 dup ? "with" : "without");
588
589 if (need_mf_bond) {
590 if (port == 1) {
591 mutex_lock(&table->mutex);
592 mutex_lock_nested(&dup_table->mutex, SINGLE_DEPTH_NESTING);
593 } else {
594 mutex_lock(&dup_table->mutex);
595 mutex_lock_nested(&table->mutex, SINGLE_DEPTH_NESTING);
596 }
597 } else {
598 mutex_lock(&table->mutex);
599 }
600
601 if (table->total == table->max) {
602 /* No free vlan entries */
603 err = -ENOSPC;
604 goto out;
605 }
606
607 if (need_mf_bond) {
608 int index_at_port = -1;
609 int index_at_dup_port = -1;
610
611 for (i = MLX4_VLAN_REGULAR; i < MLX4_MAX_VLAN_NUM; i++) {
612 if ((vlan == (MLX4_VLAN_MASK & be32_to_cpu(table->entries[i]))))
613 index_at_port = i;
614 if ((vlan == (MLX4_VLAN_MASK & be32_to_cpu(dup_table->entries[i]))))
615 index_at_dup_port = i;
616 }
617 /* check that same vlan is not in the tables at different indices */
618 if ((index_at_port != index_at_dup_port) &&
619 (index_at_port >= 0) &&
620 (index_at_dup_port >= 0))
621 can_mf_bond = false;
622
623 /* If the vlan is already in the primary table, the slot must be
624 * available in the duplicate table as well.
625 */
626 if (index_at_port >= 0 && index_at_dup_port < 0 &&
627 dup_table->refs[index_at_port]) {
628 can_mf_bond = false;
629 }
630 /* If the vlan is already in the duplicate table, check that the
631 * corresponding index is not occupied in the primary table, or
632 * the primary table already contains the vlan at the same index.
633 * Otherwise, you cannot bond (primary contains a different vlan
634 * at that index).
635 */
636 if (index_at_dup_port >= 0) {
637 if (!table->refs[index_at_dup_port] ||
638 (vlan == (MLX4_VLAN_MASK & be32_to_cpu(dup_table->entries[index_at_dup_port]))))
639 free_for_dup = index_at_dup_port;
640 else
641 can_mf_bond = false;
642 }
643 }
644
645 for (i = MLX4_VLAN_REGULAR; i < MLX4_MAX_VLAN_NUM; i++) {
646 if (!table->refs[i]) {
647 if (free < 0)
648 free = i;
649 if (free_for_dup < 0 && need_mf_bond && can_mf_bond) {
650 if (!dup_table->refs[i])
651 free_for_dup = i;
652 }
653 }
654
655 if ((table->refs[i] || table->is_dup[i]) &&
656 (vlan == (MLX4_VLAN_MASK &
657 be32_to_cpu(table->entries[i])))) {
658 /* Vlan already registered, increase references count */
659 mlx4_dbg(dev, "vlan %u is already registered.\n", vlan);
660 *index = i;
661 ++table->refs[i];
662 if (dup) {
663 u16 dup_vlan = MLX4_VLAN_MASK & be32_to_cpu(dup_table->entries[i]);
664
665 if (dup_vlan != vlan || !dup_table->is_dup[i]) {
666 mlx4_warn(dev, "register vlan: expected duplicate vlan %u on port %d index %d\n",
667 vlan, dup_port, i);
668 }
669 }
670 goto out;
671 }
672 }
673
674 if (need_mf_bond && (free_for_dup < 0)) {
675 if (dup) {
676 mlx4_warn(dev, "Fail to allocate duplicate VLAN table entry\n");
677 mlx4_warn(dev, "High Availability for virtual functions may not work as expected\n");
678 dup = false;
679 }
680 can_mf_bond = false;
681 }
682
683 if (need_mf_bond && can_mf_bond)
684 free = free_for_dup;
685
686 if (free < 0) {
687 err = -ENOMEM;
688 goto out;
689 }
690
691 /* Register new VLAN */
692 table->refs[free] = 1;
693 table->is_dup[free] = false;
694 table->entries[free] = cpu_to_be32(vlan | MLX4_VLAN_VALID);
695
696 err = mlx4_set_port_vlan_table(dev, port, table->entries);
697 if (unlikely(err)) {
698 mlx4_warn(dev, "Failed adding vlan: %u\n", vlan);
699 table->refs[free] = 0;
700 table->entries[free] = 0;
701 goto out;
702 }
703 ++table->total;
704 if (dup) {
705 dup_table->refs[free] = 0;
706 dup_table->is_dup[free] = true;
707 dup_table->entries[free] = cpu_to_be32(vlan | MLX4_VLAN_VALID);
708
709 err = mlx4_set_port_vlan_table(dev, dup_port, dup_table->entries);
710 if (unlikely(err)) {
711 mlx4_warn(dev, "Failed adding duplicate vlan: %u\n", vlan);
712 dup_table->is_dup[free] = false;
713 dup_table->entries[free] = 0;
714 goto out;
715 }
716 ++dup_table->total;
717 }
718
719 *index = free;
720 out:
721 if (need_mf_bond) {
722 if (port == 2) {
723 mutex_unlock(&table->mutex);
724 mutex_unlock(&dup_table->mutex);
725 } else {
726 mutex_unlock(&dup_table->mutex);
727 mutex_unlock(&table->mutex);
728 }
729 } else {
730 mutex_unlock(&table->mutex);
731 }
732 return err;
733 }
734
735 int mlx4_register_vlan(struct mlx4_dev *dev, u8 port, u16 vlan, int *index)
736 {
737 u64 out_param = 0;
738 int err;
739
740 if (vlan > 4095)
741 return -EINVAL;
742
743 if (mlx4_is_mfunc(dev)) {
744 err = mlx4_cmd_imm(dev, vlan, &out_param,
745 ((u32) port) << 8 | (u32) RES_VLAN,
746 RES_OP_RESERVE_AND_MAP, MLX4_CMD_ALLOC_RES,
747 MLX4_CMD_TIME_CLASS_A, MLX4_CMD_WRAPPED);
748 if (!err)
749 *index = get_param_l(&out_param);
750
751 return err;
752 }
753 return __mlx4_register_vlan(dev, port, vlan, index);
754 }
755 EXPORT_SYMBOL_GPL(mlx4_register_vlan);
756
757 void __mlx4_unregister_vlan(struct mlx4_dev *dev, u8 port, u16 vlan)
758 {
759 struct mlx4_vlan_table *table = &mlx4_priv(dev)->port[port].vlan_table;
760 int index;
761 bool dup = mlx4_is_mf_bonded(dev);
762 u8 dup_port = (port == 1) ? 2 : 1;
763 struct mlx4_vlan_table *dup_table = &mlx4_priv(dev)->port[dup_port].vlan_table;
764
765 if (dup) {
766 if (port == 1) {
767 mutex_lock(&table->mutex);
768 mutex_lock_nested(&dup_table->mutex, SINGLE_DEPTH_NESTING);
769 } else {
770 mutex_lock(&dup_table->mutex);
771 mutex_lock_nested(&table->mutex, SINGLE_DEPTH_NESTING);
772 }
773 } else {
774 mutex_lock(&table->mutex);
775 }
776
777 if (mlx4_find_cached_vlan(dev, port, vlan, &index)) {
778 mlx4_warn(dev, "vlan 0x%x is not in the vlan table\n", vlan);
779 goto out;
780 }
781
782 if (index < MLX4_VLAN_REGULAR) {
783 mlx4_warn(dev, "Trying to free special vlan index %d\n", index);
784 goto out;
785 }
786
787 if (--table->refs[index] || table->is_dup[index]) {
788 mlx4_dbg(dev, "Have %d more references for index %d, no need to modify vlan table\n",
789 table->refs[index], index);
790 if (!table->refs[index])
791 dup_table->is_dup[index] = false;
792 goto out;
793 }
794 table->entries[index] = 0;
795 if (mlx4_set_port_vlan_table(dev, port, table->entries))
796 mlx4_warn(dev, "Fail to set vlan in port %d during unregister\n", port);
797 --table->total;
798 if (dup) {
799 dup_table->is_dup[index] = false;
800 if (dup_table->refs[index])
801 goto out;
802 dup_table->entries[index] = 0;
803 if (mlx4_set_port_vlan_table(dev, dup_port, dup_table->entries))
804 mlx4_warn(dev, "Fail to set vlan in duplicate port %d during unregister\n", dup_port);
805 --dup_table->total;
806 }
807 out:
808 if (dup) {
809 if (port == 2) {
810 mutex_unlock(&table->mutex);
811 mutex_unlock(&dup_table->mutex);
812 } else {
813 mutex_unlock(&dup_table->mutex);
814 mutex_unlock(&table->mutex);
815 }
816 } else {
817 mutex_unlock(&table->mutex);
818 }
819 }
820
821 void mlx4_unregister_vlan(struct mlx4_dev *dev, u8 port, u16 vlan)
822 {
823 u64 out_param = 0;
824
825 if (mlx4_is_mfunc(dev)) {
826 (void) mlx4_cmd_imm(dev, vlan, &out_param,
827 ((u32) port) << 8 | (u32) RES_VLAN,
828 RES_OP_RESERVE_AND_MAP,
829 MLX4_CMD_FREE_RES, MLX4_CMD_TIME_CLASS_A,
830 MLX4_CMD_WRAPPED);
831 return;
832 }
833 __mlx4_unregister_vlan(dev, port, vlan);
834 }
835 EXPORT_SYMBOL_GPL(mlx4_unregister_vlan);
836
837 int mlx4_bond_mac_table(struct mlx4_dev *dev)
838 {
839 struct mlx4_mac_table *t1 = &mlx4_priv(dev)->port[1].mac_table;
840 struct mlx4_mac_table *t2 = &mlx4_priv(dev)->port[2].mac_table;
841 int ret = 0;
842 int i;
843 bool update1 = false;
844 bool update2 = false;
845
846 mutex_lock(&t1->mutex);
847 mutex_lock(&t2->mutex);
848 for (i = 0; i < MLX4_MAX_MAC_NUM; i++) {
849 if ((t1->entries[i] != t2->entries[i]) &&
850 t1->entries[i] && t2->entries[i]) {
851 mlx4_warn(dev, "can't duplicate entry %d in mac table\n", i);
852 ret = -EINVAL;
853 goto unlock;
854 }
855 }
856
857 for (i = 0; i < MLX4_MAX_MAC_NUM; i++) {
858 if (t1->entries[i] && !t2->entries[i]) {
859 t2->entries[i] = t1->entries[i];
860 t2->is_dup[i] = true;
861 update2 = true;
862 } else if (!t1->entries[i] && t2->entries[i]) {
863 t1->entries[i] = t2->entries[i];
864 t1->is_dup[i] = true;
865 update1 = true;
866 } else if (t1->entries[i] && t2->entries[i]) {
867 t1->is_dup[i] = true;
868 t2->is_dup[i] = true;
869 }
870 }
871
872 if (update1) {
873 ret = mlx4_set_port_mac_table(dev, 1, t1->entries);
874 if (ret)
875 mlx4_warn(dev, "failed to set MAC table for port 1 (%d)\n", ret);
876 }
877 if (!ret && update2) {
878 ret = mlx4_set_port_mac_table(dev, 2, t2->entries);
879 if (ret)
880 mlx4_warn(dev, "failed to set MAC table for port 2 (%d)\n", ret);
881 }
882
883 if (ret)
884 mlx4_warn(dev, "failed to create mirror MAC tables\n");
885 unlock:
886 mutex_unlock(&t2->mutex);
887 mutex_unlock(&t1->mutex);
888 return ret;
889 }
890
891 int mlx4_unbond_mac_table(struct mlx4_dev *dev)
892 {
893 struct mlx4_mac_table *t1 = &mlx4_priv(dev)->port[1].mac_table;
894 struct mlx4_mac_table *t2 = &mlx4_priv(dev)->port[2].mac_table;
895 int ret = 0;
896 int ret1;
897 int i;
898 bool update1 = false;
899 bool update2 = false;
900
901 mutex_lock(&t1->mutex);
902 mutex_lock(&t2->mutex);
903 for (i = 0; i < MLX4_MAX_MAC_NUM; i++) {
904 if (t1->entries[i] != t2->entries[i]) {
905 mlx4_warn(dev, "mac table is in an unexpected state when trying to unbond\n");
906 ret = -EINVAL;
907 goto unlock;
908 }
909 }
910
911 for (i = 0; i < MLX4_MAX_MAC_NUM; i++) {
912 if (!t1->entries[i])
913 continue;
914 t1->is_dup[i] = false;
915 if (!t1->refs[i]) {
916 t1->entries[i] = 0;
917 update1 = true;
918 }
919 t2->is_dup[i] = false;
920 if (!t2->refs[i]) {
921 t2->entries[i] = 0;
922 update2 = true;
923 }
924 }
925
926 if (update1) {
927 ret = mlx4_set_port_mac_table(dev, 1, t1->entries);
928 if (ret)
929 mlx4_warn(dev, "failed to unmirror MAC tables for port 1(%d)\n", ret);
930 }
931 if (update2) {
932 ret1 = mlx4_set_port_mac_table(dev, 2, t2->entries);
933 if (ret1) {
934 mlx4_warn(dev, "failed to unmirror MAC tables for port 2(%d)\n", ret1);
935 ret = ret1;
936 }
937 }
938 unlock:
939 mutex_unlock(&t2->mutex);
940 mutex_unlock(&t1->mutex);
941 return ret;
942 }
943
944 int mlx4_bond_vlan_table(struct mlx4_dev *dev)
945 {
946 struct mlx4_vlan_table *t1 = &mlx4_priv(dev)->port[1].vlan_table;
947 struct mlx4_vlan_table *t2 = &mlx4_priv(dev)->port[2].vlan_table;
948 int ret = 0;
949 int i;
950 bool update1 = false;
951 bool update2 = false;
952
953 mutex_lock(&t1->mutex);
954 mutex_lock(&t2->mutex);
955 for (i = 0; i < MLX4_MAX_VLAN_NUM; i++) {
956 if ((t1->entries[i] != t2->entries[i]) &&
957 t1->entries[i] && t2->entries[i]) {
958 mlx4_warn(dev, "can't duplicate entry %d in vlan table\n", i);
959 ret = -EINVAL;
960 goto unlock;
961 }
962 }
963
964 for (i = 0; i < MLX4_MAX_VLAN_NUM; i++) {
965 if (t1->entries[i] && !t2->entries[i]) {
966 t2->entries[i] = t1->entries[i];
967 t2->is_dup[i] = true;
968 update2 = true;
969 } else if (!t1->entries[i] && t2->entries[i]) {
970 t1->entries[i] = t2->entries[i];
971 t1->is_dup[i] = true;
972 update1 = true;
973 } else if (t1->entries[i] && t2->entries[i]) {
974 t1->is_dup[i] = true;
975 t2->is_dup[i] = true;
976 }
977 }
978
979 if (update1) {
980 ret = mlx4_set_port_vlan_table(dev, 1, t1->entries);
981 if (ret)
982 mlx4_warn(dev, "failed to set VLAN table for port 1 (%d)\n", ret);
983 }
984 if (!ret && update2) {
985 ret = mlx4_set_port_vlan_table(dev, 2, t2->entries);
986 if (ret)
987 mlx4_warn(dev, "failed to set VLAN table for port 2 (%d)\n", ret);
988 }
989
990 if (ret)
991 mlx4_warn(dev, "failed to create mirror VLAN tables\n");
992 unlock:
993 mutex_unlock(&t2->mutex);
994 mutex_unlock(&t1->mutex);
995 return ret;
996 }
997
998 int mlx4_unbond_vlan_table(struct mlx4_dev *dev)
999 {
1000 struct mlx4_vlan_table *t1 = &mlx4_priv(dev)->port[1].vlan_table;
1001 struct mlx4_vlan_table *t2 = &mlx4_priv(dev)->port[2].vlan_table;
1002 int ret = 0;
1003 int ret1;
1004 int i;
1005 bool update1 = false;
1006 bool update2 = false;
1007
1008 mutex_lock(&t1->mutex);
1009 mutex_lock(&t2->mutex);
1010 for (i = 0; i < MLX4_MAX_VLAN_NUM; i++) {
1011 if (t1->entries[i] != t2->entries[i]) {
1012 mlx4_warn(dev, "vlan table is in an unexpected state when trying to unbond\n");
1013 ret = -EINVAL;
1014 goto unlock;
1015 }
1016 }
1017
1018 for (i = 0; i < MLX4_MAX_VLAN_NUM; i++) {
1019 if (!t1->entries[i])
1020 continue;
1021 t1->is_dup[i] = false;
1022 if (!t1->refs[i]) {
1023 t1->entries[i] = 0;
1024 update1 = true;
1025 }
1026 t2->is_dup[i] = false;
1027 if (!t2->refs[i]) {
1028 t2->entries[i] = 0;
1029 update2 = true;
1030 }
1031 }
1032
1033 if (update1) {
1034 ret = mlx4_set_port_vlan_table(dev, 1, t1->entries);
1035 if (ret)
1036 mlx4_warn(dev, "failed to unmirror VLAN tables for port 1(%d)\n", ret);
1037 }
1038 if (update2) {
1039 ret1 = mlx4_set_port_vlan_table(dev, 2, t2->entries);
1040 if (ret1) {
1041 mlx4_warn(dev, "failed to unmirror VLAN tables for port 2(%d)\n", ret1);
1042 ret = ret1;
1043 }
1044 }
1045 unlock:
1046 mutex_unlock(&t2->mutex);
1047 mutex_unlock(&t1->mutex);
1048 return ret;
1049 }
1050
1051 int mlx4_get_port_ib_caps(struct mlx4_dev *dev, u8 port, __be32 *caps)
1052 {
1053 struct mlx4_cmd_mailbox *inmailbox, *outmailbox;
1054 u8 *inbuf, *outbuf;
1055 int err;
1056
1057 inmailbox = mlx4_alloc_cmd_mailbox(dev);
1058 if (IS_ERR(inmailbox))
1059 return PTR_ERR(inmailbox);
1060
1061 outmailbox = mlx4_alloc_cmd_mailbox(dev);
1062 if (IS_ERR(outmailbox)) {
1063 mlx4_free_cmd_mailbox(dev, inmailbox);
1064 return PTR_ERR(outmailbox);
1065 }
1066
1067 inbuf = inmailbox->buf;
1068 outbuf = outmailbox->buf;
1069 inbuf[0] = 1;
1070 inbuf[1] = 1;
1071 inbuf[2] = 1;
1072 inbuf[3] = 1;
1073 *(__be16 *) (&inbuf[16]) = cpu_to_be16(0x0015);
1074 *(__be32 *) (&inbuf[20]) = cpu_to_be32(port);
1075
1076 err = mlx4_cmd_box(dev, inmailbox->dma, outmailbox->dma, port, 3,
1077 MLX4_CMD_MAD_IFC, MLX4_CMD_TIME_CLASS_C,
1078 MLX4_CMD_NATIVE);
1079 if (!err)
1080 *caps = *(__be32 *) (outbuf + 84);
1081 mlx4_free_cmd_mailbox(dev, inmailbox);
1082 mlx4_free_cmd_mailbox(dev, outmailbox);
1083 return err;
1084 }
1085 static struct mlx4_roce_gid_entry zgid_entry;
1086
1087 int mlx4_get_slave_num_gids(struct mlx4_dev *dev, int slave, int port)
1088 {
1089 int vfs;
1090 int slave_gid = slave;
1091 unsigned i;
1092 struct mlx4_slaves_pport slaves_pport;
1093 struct mlx4_active_ports actv_ports;
1094 unsigned max_port_p_one;
1095
1096 if (slave == 0)
1097 return MLX4_ROCE_PF_GIDS;
1098
1099 /* Slave is a VF */
1100 slaves_pport = mlx4_phys_to_slaves_pport(dev, port);
1101 actv_ports = mlx4_get_active_ports(dev, slave);
1102 max_port_p_one = find_first_bit(actv_ports.ports, dev->caps.num_ports) +
1103 bitmap_weight(actv_ports.ports, dev->caps.num_ports) + 1;
1104
1105 for (i = 1; i < max_port_p_one; i++) {
1106 struct mlx4_active_ports exclusive_ports;
1107 struct mlx4_slaves_pport slaves_pport_actv;
1108 bitmap_zero(exclusive_ports.ports, dev->caps.num_ports);
1109 set_bit(i - 1, exclusive_ports.ports);
1110 if (i == port)
1111 continue;
1112 slaves_pport_actv = mlx4_phys_to_slaves_pport_actv(
1113 dev, &exclusive_ports);
1114 slave_gid -= bitmap_weight(slaves_pport_actv.slaves,
1115 dev->persist->num_vfs + 1);
1116 }
1117 vfs = bitmap_weight(slaves_pport.slaves, dev->persist->num_vfs + 1) - 1;
1118 if (slave_gid <= ((MLX4_ROCE_MAX_GIDS - MLX4_ROCE_PF_GIDS) % vfs))
1119 return ((MLX4_ROCE_MAX_GIDS - MLX4_ROCE_PF_GIDS) / vfs) + 1;
1120 return (MLX4_ROCE_MAX_GIDS - MLX4_ROCE_PF_GIDS) / vfs;
1121 }
1122
1123 int mlx4_get_base_gid_ix(struct mlx4_dev *dev, int slave, int port)
1124 {
1125 int gids;
1126 unsigned i;
1127 int slave_gid = slave;
1128 int vfs;
1129
1130 struct mlx4_slaves_pport slaves_pport;
1131 struct mlx4_active_ports actv_ports;
1132 unsigned max_port_p_one;
1133
1134 if (slave == 0)
1135 return 0;
1136
1137 slaves_pport = mlx4_phys_to_slaves_pport(dev, port);
1138 actv_ports = mlx4_get_active_ports(dev, slave);
1139 max_port_p_one = find_first_bit(actv_ports.ports, dev->caps.num_ports) +
1140 bitmap_weight(actv_ports.ports, dev->caps.num_ports) + 1;
1141
1142 for (i = 1; i < max_port_p_one; i++) {
1143 struct mlx4_active_ports exclusive_ports;
1144 struct mlx4_slaves_pport slaves_pport_actv;
1145 bitmap_zero(exclusive_ports.ports, dev->caps.num_ports);
1146 set_bit(i - 1, exclusive_ports.ports);
1147 if (i == port)
1148 continue;
1149 slaves_pport_actv = mlx4_phys_to_slaves_pport_actv(
1150 dev, &exclusive_ports);
1151 slave_gid -= bitmap_weight(slaves_pport_actv.slaves,
1152 dev->persist->num_vfs + 1);
1153 }
1154 gids = MLX4_ROCE_MAX_GIDS - MLX4_ROCE_PF_GIDS;
1155 vfs = bitmap_weight(slaves_pport.slaves, dev->persist->num_vfs + 1) - 1;
1156 if (slave_gid <= gids % vfs)
1157 return MLX4_ROCE_PF_GIDS + ((gids / vfs) + 1) * (slave_gid - 1);
1158
1159 return MLX4_ROCE_PF_GIDS + (gids % vfs) +
1160 ((gids / vfs) * (slave_gid - 1));
1161 }
1162 EXPORT_SYMBOL_GPL(mlx4_get_base_gid_ix);
1163
1164 static int mlx4_reset_roce_port_gids(struct mlx4_dev *dev, int slave,
1165 int port, struct mlx4_cmd_mailbox *mailbox)
1166 {
1167 struct mlx4_roce_gid_entry *gid_entry_mbox;
1168 struct mlx4_priv *priv = mlx4_priv(dev);
1169 int num_gids, base, offset;
1170 int i, err;
1171
1172 num_gids = mlx4_get_slave_num_gids(dev, slave, port);
1173 base = mlx4_get_base_gid_ix(dev, slave, port);
1174
1175 memset(mailbox->buf, 0, MLX4_MAILBOX_SIZE);
1176
1177 mutex_lock(&(priv->port[port].gid_table.mutex));
1178 /* Zero-out gids belonging to that slave in the port GID table */
1179 for (i = 0, offset = base; i < num_gids; offset++, i++)
1180 memcpy(priv->port[port].gid_table.roce_gids[offset].raw,
1181 zgid_entry.raw, MLX4_ROCE_GID_ENTRY_SIZE);
1182
1183 /* Now, copy roce port gids table to mailbox for passing to FW */
1184 gid_entry_mbox = (struct mlx4_roce_gid_entry *)mailbox->buf;
1185 for (i = 0; i < MLX4_ROCE_MAX_GIDS; gid_entry_mbox++, i++)
1186 memcpy(gid_entry_mbox->raw,
1187 priv->port[port].gid_table.roce_gids[i].raw,
1188 MLX4_ROCE_GID_ENTRY_SIZE);
1189
1190 err = mlx4_cmd(dev, mailbox->dma,
1191 ((u32)port) | (MLX4_SET_PORT_GID_TABLE << 8),
1192 MLX4_SET_PORT_ETH_OPCODE, MLX4_CMD_SET_PORT,
1193 MLX4_CMD_TIME_CLASS_B, MLX4_CMD_NATIVE);
1194 mutex_unlock(&(priv->port[port].gid_table.mutex));
1195 return err;
1196 }
1197
1198
1199 void mlx4_reset_roce_gids(struct mlx4_dev *dev, int slave)
1200 {
1201 struct mlx4_active_ports actv_ports;
1202 struct mlx4_cmd_mailbox *mailbox;
1203 int num_eth_ports, err;
1204 int i;
1205
1206 if (slave < 0 || slave > dev->persist->num_vfs)
1207 return;
1208
1209 actv_ports = mlx4_get_active_ports(dev, slave);
1210
1211 for (i = 0, num_eth_ports = 0; i < dev->caps.num_ports; i++) {
1212 if (test_bit(i, actv_ports.ports)) {
1213 if (dev->caps.port_type[i + 1] != MLX4_PORT_TYPE_ETH)
1214 continue;
1215 num_eth_ports++;
1216 }
1217 }
1218
1219 if (!num_eth_ports)
1220 return;
1221
1222 /* have ETH ports. Alloc mailbox for SET_PORT command */
1223 mailbox = mlx4_alloc_cmd_mailbox(dev);
1224 if (IS_ERR(mailbox))
1225 return;
1226
1227 for (i = 0; i < dev->caps.num_ports; i++) {
1228 if (test_bit(i, actv_ports.ports)) {
1229 if (dev->caps.port_type[i + 1] != MLX4_PORT_TYPE_ETH)
1230 continue;
1231 err = mlx4_reset_roce_port_gids(dev, slave, i + 1, mailbox);
1232 if (err)
1233 mlx4_warn(dev, "Could not reset ETH port GID table for slave %d, port %d (%d)\n",
1234 slave, i + 1, err);
1235 }
1236 }
1237
1238 mlx4_free_cmd_mailbox(dev, mailbox);
1239 return;
1240 }
1241
1242 static int mlx4_common_set_port(struct mlx4_dev *dev, int slave, u32 in_mod,
1243 u8 op_mod, struct mlx4_cmd_mailbox *inbox)
1244 {
1245 struct mlx4_priv *priv = mlx4_priv(dev);
1246 struct mlx4_port_info *port_info;
1247 struct mlx4_mfunc_master_ctx *master = &priv->mfunc.master;
1248 struct mlx4_slave_state *slave_st = &master->slave_state[slave];
1249 struct mlx4_set_port_rqp_calc_context *qpn_context;
1250 struct mlx4_set_port_general_context *gen_context;
1251 struct mlx4_roce_gid_entry *gid_entry_tbl, *gid_entry_mbox, *gid_entry_mb1;
1252 int reset_qkey_viols;
1253 int port;
1254 int is_eth;
1255 int num_gids;
1256 int base;
1257 u32 in_modifier;
1258 u32 promisc;
1259 u16 mtu, prev_mtu;
1260 int err;
1261 int i, j;
1262 int offset;
1263 __be32 agg_cap_mask;
1264 __be32 slave_cap_mask;
1265 __be32 new_cap_mask;
1266
1267 port = in_mod & 0xff;
1268 in_modifier = in_mod >> 8;
1269 is_eth = op_mod;
1270 port_info = &priv->port[port];
1271
1272 /* Slaves cannot perform SET_PORT operations except changing MTU */
1273 if (is_eth) {
1274 if (slave != dev->caps.function &&
1275 in_modifier != MLX4_SET_PORT_GENERAL &&
1276 in_modifier != MLX4_SET_PORT_GID_TABLE) {
1277 mlx4_warn(dev, "denying SET_PORT for slave:%d\n",
1278 slave);
1279 return -EINVAL;
1280 }
1281 switch (in_modifier) {
1282 case MLX4_SET_PORT_RQP_CALC:
1283 qpn_context = inbox->buf;
1284 qpn_context->base_qpn =
1285 cpu_to_be32(port_info->base_qpn);
1286 qpn_context->n_mac = 0x7;
1287 promisc = be32_to_cpu(qpn_context->promisc) >>
1288 SET_PORT_PROMISC_SHIFT;
1289 qpn_context->promisc = cpu_to_be32(
1290 promisc << SET_PORT_PROMISC_SHIFT |
1291 port_info->base_qpn);
1292 promisc = be32_to_cpu(qpn_context->mcast) >>
1293 SET_PORT_MC_PROMISC_SHIFT;
1294 qpn_context->mcast = cpu_to_be32(
1295 promisc << SET_PORT_MC_PROMISC_SHIFT |
1296 port_info->base_qpn);
1297 break;
1298 case MLX4_SET_PORT_GENERAL:
1299 gen_context = inbox->buf;
1300 /* Mtu is configured as the max MTU among all the
1301 * the functions on the port. */
1302 mtu = be16_to_cpu(gen_context->mtu);
1303 mtu = min_t(int, mtu, dev->caps.eth_mtu_cap[port] +
1304 ETH_HLEN + VLAN_HLEN + ETH_FCS_LEN);
1305 prev_mtu = slave_st->mtu[port];
1306 slave_st->mtu[port] = mtu;
1307 if (mtu > master->max_mtu[port])
1308 master->max_mtu[port] = mtu;
1309 if (mtu < prev_mtu && prev_mtu ==
1310 master->max_mtu[port]) {
1311 slave_st->mtu[port] = mtu;
1312 master->max_mtu[port] = mtu;
1313 for (i = 0; i < dev->num_slaves; i++) {
1314 master->max_mtu[port] =
1315 max(master->max_mtu[port],
1316 master->slave_state[i].mtu[port]);
1317 }
1318 }
1319
1320 gen_context->mtu = cpu_to_be16(master->max_mtu[port]);
1321 /* Slave cannot change Global Pause configuration */
1322 if (slave != mlx4_master_func_num(dev) &&
1323 ((gen_context->pptx != master->pptx) ||
1324 (gen_context->pprx != master->pprx))) {
1325 gen_context->pptx = master->pptx;
1326 gen_context->pprx = master->pprx;
1327 mlx4_warn(dev,
1328 "denying Global Pause change for slave:%d\n",
1329 slave);
1330 } else {
1331 master->pptx = gen_context->pptx;
1332 master->pprx = gen_context->pprx;
1333 }
1334 break;
1335 case MLX4_SET_PORT_GID_TABLE:
1336 /* change to MULTIPLE entries: number of guest's gids
1337 * need a FOR-loop here over number of gids the guest has.
1338 * 1. Check no duplicates in gids passed by slave
1339 */
1340 num_gids = mlx4_get_slave_num_gids(dev, slave, port);
1341 base = mlx4_get_base_gid_ix(dev, slave, port);
1342 gid_entry_mbox = (struct mlx4_roce_gid_entry *)(inbox->buf);
1343 for (i = 0; i < num_gids; gid_entry_mbox++, i++) {
1344 if (!memcmp(gid_entry_mbox->raw, zgid_entry.raw,
1345 sizeof(zgid_entry)))
1346 continue;
1347 gid_entry_mb1 = gid_entry_mbox + 1;
1348 for (j = i + 1; j < num_gids; gid_entry_mb1++, j++) {
1349 if (!memcmp(gid_entry_mb1->raw,
1350 zgid_entry.raw, sizeof(zgid_entry)))
1351 continue;
1352 if (!memcmp(gid_entry_mb1->raw, gid_entry_mbox->raw,
1353 sizeof(gid_entry_mbox->raw))) {
1354 /* found duplicate */
1355 return -EINVAL;
1356 }
1357 }
1358 }
1359
1360 /* 2. Check that do not have duplicates in OTHER
1361 * entries in the port GID table
1362 */
1363
1364 mutex_lock(&(priv->port[port].gid_table.mutex));
1365 for (i = 0; i < MLX4_ROCE_MAX_GIDS; i++) {
1366 if (i >= base && i < base + num_gids)
1367 continue; /* don't compare to slave's current gids */
1368 gid_entry_tbl = &priv->port[port].gid_table.roce_gids[i];
1369 if (!memcmp(gid_entry_tbl->raw, zgid_entry.raw, sizeof(zgid_entry)))
1370 continue;
1371 gid_entry_mbox = (struct mlx4_roce_gid_entry *)(inbox->buf);
1372 for (j = 0; j < num_gids; gid_entry_mbox++, j++) {
1373 if (!memcmp(gid_entry_mbox->raw, zgid_entry.raw,
1374 sizeof(zgid_entry)))
1375 continue;
1376 if (!memcmp(gid_entry_mbox->raw, gid_entry_tbl->raw,
1377 sizeof(gid_entry_tbl->raw))) {
1378 /* found duplicate */
1379 mlx4_warn(dev, "requested gid entry for slave:%d is a duplicate of gid at index %d\n",
1380 slave, i);
1381 mutex_unlock(&(priv->port[port].gid_table.mutex));
1382 return -EINVAL;
1383 }
1384 }
1385 }
1386
1387 /* insert slave GIDs with memcpy, starting at slave's base index */
1388 gid_entry_mbox = (struct mlx4_roce_gid_entry *)(inbox->buf);
1389 for (i = 0, offset = base; i < num_gids; gid_entry_mbox++, offset++, i++)
1390 memcpy(priv->port[port].gid_table.roce_gids[offset].raw,
1391 gid_entry_mbox->raw, MLX4_ROCE_GID_ENTRY_SIZE);
1392
1393 /* Now, copy roce port gids table to current mailbox for passing to FW */
1394 gid_entry_mbox = (struct mlx4_roce_gid_entry *)(inbox->buf);
1395 for (i = 0; i < MLX4_ROCE_MAX_GIDS; gid_entry_mbox++, i++)
1396 memcpy(gid_entry_mbox->raw,
1397 priv->port[port].gid_table.roce_gids[i].raw,
1398 MLX4_ROCE_GID_ENTRY_SIZE);
1399
1400 err = mlx4_cmd(dev, inbox->dma, in_mod & 0xffff, op_mod,
1401 MLX4_CMD_SET_PORT, MLX4_CMD_TIME_CLASS_B,
1402 MLX4_CMD_NATIVE);
1403 mutex_unlock(&(priv->port[port].gid_table.mutex));
1404 return err;
1405 }
1406
1407 return mlx4_cmd(dev, inbox->dma, in_mod & 0xffff, op_mod,
1408 MLX4_CMD_SET_PORT, MLX4_CMD_TIME_CLASS_B,
1409 MLX4_CMD_NATIVE);
1410 }
1411
1412 /* Slaves are not allowed to SET_PORT beacon (LED) blink */
1413 if (op_mod == MLX4_SET_PORT_BEACON_OPCODE) {
1414 mlx4_warn(dev, "denying SET_PORT Beacon slave:%d\n", slave);
1415 return -EPERM;
1416 }
1417
1418 /* For IB, we only consider:
1419 * - The capability mask, which is set to the aggregate of all
1420 * slave function capabilities
1421 * - The QKey violatin counter - reset according to each request.
1422 */
1423
1424 if (dev->flags & MLX4_FLAG_OLD_PORT_CMDS) {
1425 reset_qkey_viols = (*(u8 *) inbox->buf) & 0x40;
1426 new_cap_mask = ((__be32 *) inbox->buf)[2];
1427 } else {
1428 reset_qkey_viols = ((u8 *) inbox->buf)[3] & 0x1;
1429 new_cap_mask = ((__be32 *) inbox->buf)[1];
1430 }
1431
1432 /* slave may not set the IS_SM capability for the port */
1433 if (slave != mlx4_master_func_num(dev) &&
1434 (be32_to_cpu(new_cap_mask) & MLX4_PORT_CAP_IS_SM))
1435 return -EINVAL;
1436
1437 /* No DEV_MGMT in multifunc mode */
1438 if (mlx4_is_mfunc(dev) &&
1439 (be32_to_cpu(new_cap_mask) & MLX4_PORT_CAP_DEV_MGMT_SUP))
1440 return -EINVAL;
1441
1442 agg_cap_mask = 0;
1443 slave_cap_mask =
1444 priv->mfunc.master.slave_state[slave].ib_cap_mask[port];
1445 priv->mfunc.master.slave_state[slave].ib_cap_mask[port] = new_cap_mask;
1446 for (i = 0; i < dev->num_slaves; i++)
1447 agg_cap_mask |=
1448 priv->mfunc.master.slave_state[i].ib_cap_mask[port];
1449
1450 /* only clear mailbox for guests. Master may be setting
1451 * MTU or PKEY table size
1452 */
1453 if (slave != dev->caps.function)
1454 memset(inbox->buf, 0, 256);
1455 if (dev->flags & MLX4_FLAG_OLD_PORT_CMDS) {
1456 *(u8 *) inbox->buf |= !!reset_qkey_viols << 6;
1457 ((__be32 *) inbox->buf)[2] = agg_cap_mask;
1458 } else {
1459 ((u8 *) inbox->buf)[3] |= !!reset_qkey_viols;
1460 ((__be32 *) inbox->buf)[1] = agg_cap_mask;
1461 }
1462
1463 err = mlx4_cmd(dev, inbox->dma, port, is_eth, MLX4_CMD_SET_PORT,
1464 MLX4_CMD_TIME_CLASS_B, MLX4_CMD_NATIVE);
1465 if (err)
1466 priv->mfunc.master.slave_state[slave].ib_cap_mask[port] =
1467 slave_cap_mask;
1468 return err;
1469 }
1470
1471 int mlx4_SET_PORT_wrapper(struct mlx4_dev *dev, int slave,
1472 struct mlx4_vhcr *vhcr,
1473 struct mlx4_cmd_mailbox *inbox,
1474 struct mlx4_cmd_mailbox *outbox,
1475 struct mlx4_cmd_info *cmd)
1476 {
1477 int port = mlx4_slave_convert_port(
1478 dev, slave, vhcr->in_modifier & 0xFF);
1479
1480 if (port < 0)
1481 return -EINVAL;
1482
1483 vhcr->in_modifier = (vhcr->in_modifier & ~0xFF) |
1484 (port & 0xFF);
1485
1486 return mlx4_common_set_port(dev, slave, vhcr->in_modifier,
1487 vhcr->op_modifier, inbox);
1488 }
1489
1490 /* bit locations for set port command with zero op modifier */
1491 enum {
1492 MLX4_SET_PORT_VL_CAP = 4, /* bits 7:4 */
1493 MLX4_SET_PORT_MTU_CAP = 12, /* bits 15:12 */
1494 MLX4_CHANGE_PORT_PKEY_TBL_SZ = 20,
1495 MLX4_CHANGE_PORT_VL_CAP = 21,
1496 MLX4_CHANGE_PORT_MTU_CAP = 22,
1497 };
1498
1499 int mlx4_SET_PORT(struct mlx4_dev *dev, u8 port, int pkey_tbl_sz)
1500 {
1501 struct mlx4_cmd_mailbox *mailbox;
1502 int err, vl_cap, pkey_tbl_flag = 0;
1503
1504 if (dev->caps.port_type[port] == MLX4_PORT_TYPE_ETH)
1505 return 0;
1506
1507 mailbox = mlx4_alloc_cmd_mailbox(dev);
1508 if (IS_ERR(mailbox))
1509 return PTR_ERR(mailbox);
1510
1511 ((__be32 *) mailbox->buf)[1] = dev->caps.ib_port_def_cap[port];
1512
1513 if (pkey_tbl_sz >= 0 && mlx4_is_master(dev)) {
1514 pkey_tbl_flag = 1;
1515 ((__be16 *) mailbox->buf)[20] = cpu_to_be16(pkey_tbl_sz);
1516 }
1517
1518 /* IB VL CAP enum isn't used by the firmware, just numerical values */
1519 for (vl_cap = 8; vl_cap >= 1; vl_cap >>= 1) {
1520 ((__be32 *) mailbox->buf)[0] = cpu_to_be32(
1521 (1 << MLX4_CHANGE_PORT_MTU_CAP) |
1522 (1 << MLX4_CHANGE_PORT_VL_CAP) |
1523 (pkey_tbl_flag << MLX4_CHANGE_PORT_PKEY_TBL_SZ) |
1524 (dev->caps.port_ib_mtu[port] << MLX4_SET_PORT_MTU_CAP) |
1525 (vl_cap << MLX4_SET_PORT_VL_CAP));
1526 err = mlx4_cmd(dev, mailbox->dma, port,
1527 MLX4_SET_PORT_IB_OPCODE, MLX4_CMD_SET_PORT,
1528 MLX4_CMD_TIME_CLASS_B, MLX4_CMD_WRAPPED);
1529 if (err != -ENOMEM)
1530 break;
1531 }
1532
1533 mlx4_free_cmd_mailbox(dev, mailbox);
1534 return err;
1535 }
1536
1537 #define SET_PORT_ROCE_2_FLAGS 0x10
1538 #define MLX4_SET_PORT_ROCE_V1_V2 0x2
1539 int mlx4_SET_PORT_general(struct mlx4_dev *dev, u8 port, int mtu,
1540 u8 pptx, u8 pfctx, u8 pprx, u8 pfcrx)
1541 {
1542 struct mlx4_cmd_mailbox *mailbox;
1543 struct mlx4_set_port_general_context *context;
1544 int err;
1545 u32 in_mod;
1546
1547 mailbox = mlx4_alloc_cmd_mailbox(dev);
1548 if (IS_ERR(mailbox))
1549 return PTR_ERR(mailbox);
1550 context = mailbox->buf;
1551 context->flags = SET_PORT_GEN_ALL_VALID;
1552 context->mtu = cpu_to_be16(mtu);
1553 context->pptx = (pptx * (!pfctx)) << 7;
1554 context->pfctx = pfctx;
1555 context->pprx = (pprx * (!pfcrx)) << 7;
1556 context->pfcrx = pfcrx;
1557
1558 if (dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_ROCE_V1_V2) {
1559 context->flags |= SET_PORT_ROCE_2_FLAGS;
1560 context->roce_mode |=
1561 MLX4_SET_PORT_ROCE_V1_V2 << 4;
1562 }
1563 in_mod = MLX4_SET_PORT_GENERAL << 8 | port;
1564 err = mlx4_cmd(dev, mailbox->dma, in_mod, MLX4_SET_PORT_ETH_OPCODE,
1565 MLX4_CMD_SET_PORT, MLX4_CMD_TIME_CLASS_B,
1566 MLX4_CMD_WRAPPED);
1567
1568 mlx4_free_cmd_mailbox(dev, mailbox);
1569 return err;
1570 }
1571 EXPORT_SYMBOL(mlx4_SET_PORT_general);
1572
1573 int mlx4_SET_PORT_qpn_calc(struct mlx4_dev *dev, u8 port, u32 base_qpn,
1574 u8 promisc)
1575 {
1576 struct mlx4_cmd_mailbox *mailbox;
1577 struct mlx4_set_port_rqp_calc_context *context;
1578 int err;
1579 u32 in_mod;
1580 u32 m_promisc = (dev->caps.flags & MLX4_DEV_CAP_FLAG_VEP_MC_STEER) ?
1581 MCAST_DIRECT : MCAST_DEFAULT;
1582
1583 if (dev->caps.steering_mode != MLX4_STEERING_MODE_A0)
1584 return 0;
1585
1586 mailbox = mlx4_alloc_cmd_mailbox(dev);
1587 if (IS_ERR(mailbox))
1588 return PTR_ERR(mailbox);
1589 context = mailbox->buf;
1590 context->base_qpn = cpu_to_be32(base_qpn);
1591 context->n_mac = dev->caps.log_num_macs;
1592 context->promisc = cpu_to_be32(promisc << SET_PORT_PROMISC_SHIFT |
1593 base_qpn);
1594 context->mcast = cpu_to_be32(m_promisc << SET_PORT_MC_PROMISC_SHIFT |
1595 base_qpn);
1596 context->intra_no_vlan = 0;
1597 context->no_vlan = MLX4_NO_VLAN_IDX;
1598 context->intra_vlan_miss = 0;
1599 context->vlan_miss = MLX4_VLAN_MISS_IDX;
1600
1601 in_mod = MLX4_SET_PORT_RQP_CALC << 8 | port;
1602 err = mlx4_cmd(dev, mailbox->dma, in_mod, MLX4_SET_PORT_ETH_OPCODE,
1603 MLX4_CMD_SET_PORT, MLX4_CMD_TIME_CLASS_B,
1604 MLX4_CMD_WRAPPED);
1605
1606 mlx4_free_cmd_mailbox(dev, mailbox);
1607 return err;
1608 }
1609 EXPORT_SYMBOL(mlx4_SET_PORT_qpn_calc);
1610
1611 int mlx4_SET_PORT_fcs_check(struct mlx4_dev *dev, u8 port, u8 ignore_fcs_value)
1612 {
1613 struct mlx4_cmd_mailbox *mailbox;
1614 struct mlx4_set_port_general_context *context;
1615 u32 in_mod;
1616 int err;
1617
1618 mailbox = mlx4_alloc_cmd_mailbox(dev);
1619 if (IS_ERR(mailbox))
1620 return PTR_ERR(mailbox);
1621 context = mailbox->buf;
1622 context->v_ignore_fcs |= MLX4_FLAG_V_IGNORE_FCS_MASK;
1623 if (ignore_fcs_value)
1624 context->ignore_fcs |= MLX4_IGNORE_FCS_MASK;
1625 else
1626 context->ignore_fcs &= ~MLX4_IGNORE_FCS_MASK;
1627
1628 in_mod = MLX4_SET_PORT_GENERAL << 8 | port;
1629 err = mlx4_cmd(dev, mailbox->dma, in_mod, 1, MLX4_CMD_SET_PORT,
1630 MLX4_CMD_TIME_CLASS_B, MLX4_CMD_NATIVE);
1631
1632 mlx4_free_cmd_mailbox(dev, mailbox);
1633 return err;
1634 }
1635 EXPORT_SYMBOL(mlx4_SET_PORT_fcs_check);
1636
1637 enum {
1638 VXLAN_ENABLE_MODIFY = 1 << 7,
1639 VXLAN_STEERING_MODIFY = 1 << 6,
1640
1641 VXLAN_ENABLE = 1 << 7,
1642 };
1643
1644 struct mlx4_set_port_vxlan_context {
1645 u32 reserved1;
1646 u8 modify_flags;
1647 u8 reserved2;
1648 u8 enable_flags;
1649 u8 steering;
1650 };
1651
1652 int mlx4_SET_PORT_VXLAN(struct mlx4_dev *dev, u8 port, u8 steering, int enable)
1653 {
1654 int err;
1655 u32 in_mod;
1656 struct mlx4_cmd_mailbox *mailbox;
1657 struct mlx4_set_port_vxlan_context *context;
1658
1659 mailbox = mlx4_alloc_cmd_mailbox(dev);
1660 if (IS_ERR(mailbox))
1661 return PTR_ERR(mailbox);
1662 context = mailbox->buf;
1663 memset(context, 0, sizeof(*context));
1664
1665 context->modify_flags = VXLAN_ENABLE_MODIFY | VXLAN_STEERING_MODIFY;
1666 if (enable)
1667 context->enable_flags = VXLAN_ENABLE;
1668 context->steering = steering;
1669
1670 in_mod = MLX4_SET_PORT_VXLAN << 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_NATIVE);
1674
1675 mlx4_free_cmd_mailbox(dev, mailbox);
1676 return err;
1677 }
1678 EXPORT_SYMBOL(mlx4_SET_PORT_VXLAN);
1679
1680 int mlx4_SET_PORT_BEACON(struct mlx4_dev *dev, u8 port, u16 time)
1681 {
1682 int err;
1683 struct mlx4_cmd_mailbox *mailbox;
1684
1685 mailbox = mlx4_alloc_cmd_mailbox(dev);
1686 if (IS_ERR(mailbox))
1687 return PTR_ERR(mailbox);
1688
1689 *((__be32 *)mailbox->buf) = cpu_to_be32(time);
1690
1691 err = mlx4_cmd(dev, mailbox->dma, port, MLX4_SET_PORT_BEACON_OPCODE,
1692 MLX4_CMD_SET_PORT, MLX4_CMD_TIME_CLASS_B,
1693 MLX4_CMD_NATIVE);
1694
1695 mlx4_free_cmd_mailbox(dev, mailbox);
1696 return err;
1697 }
1698 EXPORT_SYMBOL(mlx4_SET_PORT_BEACON);
1699
1700 int mlx4_SET_MCAST_FLTR_wrapper(struct mlx4_dev *dev, int slave,
1701 struct mlx4_vhcr *vhcr,
1702 struct mlx4_cmd_mailbox *inbox,
1703 struct mlx4_cmd_mailbox *outbox,
1704 struct mlx4_cmd_info *cmd)
1705 {
1706 int err = 0;
1707
1708 return err;
1709 }
1710
1711 int mlx4_SET_MCAST_FLTR(struct mlx4_dev *dev, u8 port,
1712 u64 mac, u64 clear, u8 mode)
1713 {
1714 return mlx4_cmd(dev, (mac | (clear << 63)), port, mode,
1715 MLX4_CMD_SET_MCAST_FLTR, MLX4_CMD_TIME_CLASS_B,
1716 MLX4_CMD_WRAPPED);
1717 }
1718 EXPORT_SYMBOL(mlx4_SET_MCAST_FLTR);
1719
1720 int mlx4_SET_VLAN_FLTR_wrapper(struct mlx4_dev *dev, int slave,
1721 struct mlx4_vhcr *vhcr,
1722 struct mlx4_cmd_mailbox *inbox,
1723 struct mlx4_cmd_mailbox *outbox,
1724 struct mlx4_cmd_info *cmd)
1725 {
1726 int err = 0;
1727
1728 return err;
1729 }
1730
1731 int mlx4_DUMP_ETH_STATS_wrapper(struct mlx4_dev *dev, int slave,
1732 struct mlx4_vhcr *vhcr,
1733 struct mlx4_cmd_mailbox *inbox,
1734 struct mlx4_cmd_mailbox *outbox,
1735 struct mlx4_cmd_info *cmd)
1736 {
1737 return 0;
1738 }
1739
1740 int mlx4_get_slave_from_roce_gid(struct mlx4_dev *dev, int port, u8 *gid,
1741 int *slave_id)
1742 {
1743 struct mlx4_priv *priv = mlx4_priv(dev);
1744 int i, found_ix = -1;
1745 int vf_gids = MLX4_ROCE_MAX_GIDS - MLX4_ROCE_PF_GIDS;
1746 struct mlx4_slaves_pport slaves_pport;
1747 unsigned num_vfs;
1748 int slave_gid;
1749
1750 if (!mlx4_is_mfunc(dev))
1751 return -EINVAL;
1752
1753 slaves_pport = mlx4_phys_to_slaves_pport(dev, port);
1754 num_vfs = bitmap_weight(slaves_pport.slaves,
1755 dev->persist->num_vfs + 1) - 1;
1756
1757 for (i = 0; i < MLX4_ROCE_MAX_GIDS; i++) {
1758 if (!memcmp(priv->port[port].gid_table.roce_gids[i].raw, gid,
1759 MLX4_ROCE_GID_ENTRY_SIZE)) {
1760 found_ix = i;
1761 break;
1762 }
1763 }
1764
1765 if (found_ix >= 0) {
1766 /* Calculate a slave_gid which is the slave number in the gid
1767 * table and not a globally unique slave number.
1768 */
1769 if (found_ix < MLX4_ROCE_PF_GIDS)
1770 slave_gid = 0;
1771 else if (found_ix < MLX4_ROCE_PF_GIDS + (vf_gids % num_vfs) *
1772 (vf_gids / num_vfs + 1))
1773 slave_gid = ((found_ix - MLX4_ROCE_PF_GIDS) /
1774 (vf_gids / num_vfs + 1)) + 1;
1775 else
1776 slave_gid =
1777 ((found_ix - MLX4_ROCE_PF_GIDS -
1778 ((vf_gids % num_vfs) * ((vf_gids / num_vfs + 1)))) /
1779 (vf_gids / num_vfs)) + vf_gids % num_vfs + 1;
1780
1781 /* Calculate the globally unique slave id */
1782 if (slave_gid) {
1783 struct mlx4_active_ports exclusive_ports;
1784 struct mlx4_active_ports actv_ports;
1785 struct mlx4_slaves_pport slaves_pport_actv;
1786 unsigned max_port_p_one;
1787 int num_vfs_before = 0;
1788 int candidate_slave_gid;
1789
1790 /* Calculate how many VFs are on the previous port, if exists */
1791 for (i = 1; i < port; i++) {
1792 bitmap_zero(exclusive_ports.ports, dev->caps.num_ports);
1793 set_bit(i - 1, exclusive_ports.ports);
1794 slaves_pport_actv =
1795 mlx4_phys_to_slaves_pport_actv(
1796 dev, &exclusive_ports);
1797 num_vfs_before += bitmap_weight(
1798 slaves_pport_actv.slaves,
1799 dev->persist->num_vfs + 1);
1800 }
1801
1802 /* candidate_slave_gid isn't necessarily the correct slave, but
1803 * it has the same number of ports and is assigned to the same
1804 * ports as the real slave we're looking for. On dual port VF,
1805 * slave_gid = [single port VFs on port <port>] +
1806 * [offset of the current slave from the first dual port VF] +
1807 * 1 (for the PF).
1808 */
1809 candidate_slave_gid = slave_gid + num_vfs_before;
1810
1811 actv_ports = mlx4_get_active_ports(dev, candidate_slave_gid);
1812 max_port_p_one = find_first_bit(
1813 actv_ports.ports, dev->caps.num_ports) +
1814 bitmap_weight(actv_ports.ports,
1815 dev->caps.num_ports) + 1;
1816
1817 /* Calculate the real slave number */
1818 for (i = 1; i < max_port_p_one; i++) {
1819 if (i == port)
1820 continue;
1821 bitmap_zero(exclusive_ports.ports,
1822 dev->caps.num_ports);
1823 set_bit(i - 1, exclusive_ports.ports);
1824 slaves_pport_actv =
1825 mlx4_phys_to_slaves_pport_actv(
1826 dev, &exclusive_ports);
1827 slave_gid += bitmap_weight(
1828 slaves_pport_actv.slaves,
1829 dev->persist->num_vfs + 1);
1830 }
1831 }
1832 *slave_id = slave_gid;
1833 }
1834
1835 return (found_ix >= 0) ? 0 : -EINVAL;
1836 }
1837 EXPORT_SYMBOL(mlx4_get_slave_from_roce_gid);
1838
1839 int mlx4_get_roce_gid_from_slave(struct mlx4_dev *dev, int port, int slave_id,
1840 u8 *gid)
1841 {
1842 struct mlx4_priv *priv = mlx4_priv(dev);
1843
1844 if (!mlx4_is_master(dev))
1845 return -EINVAL;
1846
1847 memcpy(gid, priv->port[port].gid_table.roce_gids[slave_id].raw,
1848 MLX4_ROCE_GID_ENTRY_SIZE);
1849 return 0;
1850 }
1851 EXPORT_SYMBOL(mlx4_get_roce_gid_from_slave);
1852
1853 /* Cable Module Info */
1854 #define MODULE_INFO_MAX_READ 48
1855
1856 #define I2C_ADDR_LOW 0x50
1857 #define I2C_ADDR_HIGH 0x51
1858 #define I2C_PAGE_SIZE 256
1859
1860 /* Module Info Data */
1861 struct mlx4_cable_info {
1862 u8 i2c_addr;
1863 u8 page_num;
1864 __be16 dev_mem_address;
1865 __be16 reserved1;
1866 __be16 size;
1867 __be32 reserved2[2];
1868 u8 data[MODULE_INFO_MAX_READ];
1869 };
1870
1871 enum cable_info_err {
1872 CABLE_INF_INV_PORT = 0x1,
1873 CABLE_INF_OP_NOSUP = 0x2,
1874 CABLE_INF_NOT_CONN = 0x3,
1875 CABLE_INF_NO_EEPRM = 0x4,
1876 CABLE_INF_PAGE_ERR = 0x5,
1877 CABLE_INF_INV_ADDR = 0x6,
1878 CABLE_INF_I2C_ADDR = 0x7,
1879 CABLE_INF_QSFP_VIO = 0x8,
1880 CABLE_INF_I2C_BUSY = 0x9,
1881 };
1882
1883 #define MAD_STATUS_2_CABLE_ERR(mad_status) ((mad_status >> 8) & 0xFF)
1884
1885 static inline const char *cable_info_mad_err_str(u16 mad_status)
1886 {
1887 u8 err = MAD_STATUS_2_CABLE_ERR(mad_status);
1888
1889 switch (err) {
1890 case CABLE_INF_INV_PORT:
1891 return "invalid port selected";
1892 case CABLE_INF_OP_NOSUP:
1893 return "operation not supported for this port (the port is of type CX4 or internal)";
1894 case CABLE_INF_NOT_CONN:
1895 return "cable is not connected";
1896 case CABLE_INF_NO_EEPRM:
1897 return "the connected cable has no EPROM (passive copper cable)";
1898 case CABLE_INF_PAGE_ERR:
1899 return "page number is greater than 15";
1900 case CABLE_INF_INV_ADDR:
1901 return "invalid device_address or size (that is, size equals 0 or address+size is greater than 256)";
1902 case CABLE_INF_I2C_ADDR:
1903 return "invalid I2C slave address";
1904 case CABLE_INF_QSFP_VIO:
1905 return "at least one cable violates the QSFP specification and ignores the modsel signal";
1906 case CABLE_INF_I2C_BUSY:
1907 return "I2C bus is constantly busy";
1908 }
1909 return "Unknown Error";
1910 }
1911
1912 /**
1913 * mlx4_get_module_info - Read cable module eeprom data
1914 * @dev: mlx4_dev.
1915 * @port: port number.
1916 * @offset: byte offset in eeprom to start reading data from.
1917 * @size: num of bytes to read.
1918 * @data: output buffer to put the requested data into.
1919 *
1920 * Reads cable module eeprom data, puts the outcome data into
1921 * data pointer paramer.
1922 * Returns num of read bytes on success or a negative error
1923 * code.
1924 */
1925 int mlx4_get_module_info(struct mlx4_dev *dev, u8 port,
1926 u16 offset, u16 size, u8 *data)
1927 {
1928 struct mlx4_cmd_mailbox *inbox, *outbox;
1929 struct mlx4_mad_ifc *inmad, *outmad;
1930 struct mlx4_cable_info *cable_info;
1931 u16 i2c_addr;
1932 int ret;
1933
1934 if (size > MODULE_INFO_MAX_READ)
1935 size = MODULE_INFO_MAX_READ;
1936
1937 inbox = mlx4_alloc_cmd_mailbox(dev);
1938 if (IS_ERR(inbox))
1939 return PTR_ERR(inbox);
1940
1941 outbox = mlx4_alloc_cmd_mailbox(dev);
1942 if (IS_ERR(outbox)) {
1943 mlx4_free_cmd_mailbox(dev, inbox);
1944 return PTR_ERR(outbox);
1945 }
1946
1947 inmad = (struct mlx4_mad_ifc *)(inbox->buf);
1948 outmad = (struct mlx4_mad_ifc *)(outbox->buf);
1949
1950 inmad->method = 0x1; /* Get */
1951 inmad->class_version = 0x1;
1952 inmad->mgmt_class = 0x1;
1953 inmad->base_version = 0x1;
1954 inmad->attr_id = cpu_to_be16(0xFF60); /* Module Info */
1955
1956 if (offset < I2C_PAGE_SIZE && offset + size > I2C_PAGE_SIZE)
1957 /* Cross pages reads are not allowed
1958 * read until offset 256 in low page
1959 */
1960 size -= offset + size - I2C_PAGE_SIZE;
1961
1962 i2c_addr = I2C_ADDR_LOW;
1963 if (offset >= I2C_PAGE_SIZE) {
1964 /* Reset offset to high page */
1965 i2c_addr = I2C_ADDR_HIGH;
1966 offset -= I2C_PAGE_SIZE;
1967 }
1968
1969 cable_info = (struct mlx4_cable_info *)inmad->data;
1970 cable_info->dev_mem_address = cpu_to_be16(offset);
1971 cable_info->page_num = 0;
1972 cable_info->i2c_addr = i2c_addr;
1973 cable_info->size = cpu_to_be16(size);
1974
1975 ret = mlx4_cmd_box(dev, inbox->dma, outbox->dma, port, 3,
1976 MLX4_CMD_MAD_IFC, MLX4_CMD_TIME_CLASS_C,
1977 MLX4_CMD_NATIVE);
1978 if (ret)
1979 goto out;
1980
1981 if (be16_to_cpu(outmad->status)) {
1982 /* Mad returned with bad status */
1983 ret = be16_to_cpu(outmad->status);
1984 mlx4_warn(dev,
1985 "MLX4_CMD_MAD_IFC Get Module info attr(%x) port(%d) i2c_addr(%x) offset(%d) size(%d): Response Mad Status(%x) - %s\n",
1986 0xFF60, port, i2c_addr, offset, size,
1987 ret, cable_info_mad_err_str(ret));
1988
1989 if (i2c_addr == I2C_ADDR_HIGH &&
1990 MAD_STATUS_2_CABLE_ERR(ret) == CABLE_INF_I2C_ADDR)
1991 /* Some SFP cables do not support i2c slave
1992 * address 0x51 (high page), abort silently.
1993 */
1994 ret = 0;
1995 else
1996 ret = -ret;
1997 goto out;
1998 }
1999 cable_info = (struct mlx4_cable_info *)outmad->data;
2000 memcpy(data, cable_info->data, size);
2001 ret = size;
2002 out:
2003 mlx4_free_cmd_mailbox(dev, inbox);
2004 mlx4_free_cmd_mailbox(dev, outbox);
2005 return ret;
2006 }
2007 EXPORT_SYMBOL(mlx4_get_module_info);
2008
2009 int mlx4_max_tc(struct mlx4_dev *dev)
2010 {
2011 u8 num_tc = dev->caps.max_tc_eth;
2012
2013 if (!num_tc)
2014 num_tc = MLX4_TC_MAX_NUMBER;
2015
2016 return num_tc;
2017 }
2018 EXPORT_SYMBOL(mlx4_max_tc);
Linux with added FPC-III support