drivers/net/ethernet/mellanox/mlx4/port.c

   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 MLNX4_TX_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_common_dump_eth_stats(struct mlx4_dev *dev, int slave,
1732                                u32 in_mod, struct mlx4_cmd_mailbox *outbox)
1733 {
1734         return mlx4_cmd_box(dev, 0, outbox->dma, in_mod, 0,
1735                             MLX4_CMD_DUMP_ETH_STATS, MLX4_CMD_TIME_CLASS_B,
1736                             MLX4_CMD_NATIVE);
1737 }
1738
1739 int mlx4_DUMP_ETH_STATS_wrapper(struct mlx4_dev *dev, int slave,
1740                                 struct mlx4_vhcr *vhcr,
1741                                 struct mlx4_cmd_mailbox *inbox,
1742                                 struct mlx4_cmd_mailbox *outbox,
1743                                 struct mlx4_cmd_info *cmd)
1744 {
1745         if (slave != dev->caps.function)
1746                 return 0;
1747         return mlx4_common_dump_eth_stats(dev, slave,
1748                                           vhcr->in_modifier, outbox);
1749 }
1750
1751 int mlx4_get_slave_from_roce_gid(struct mlx4_dev *dev, int port, u8 *gid,
1752                                  int *slave_id)
1753 {
1754         struct mlx4_priv *priv = mlx4_priv(dev);
1755         int i, found_ix = -1;
1756         int vf_gids = MLX4_ROCE_MAX_GIDS - MLX4_ROCE_PF_GIDS;
1757         struct mlx4_slaves_pport slaves_pport;
1758         unsigned num_vfs;
1759         int slave_gid;
1760
1761         if (!mlx4_is_mfunc(dev))
1762                 return -EINVAL;
1763
1764         slaves_pport = mlx4_phys_to_slaves_pport(dev, port);
1765         num_vfs = bitmap_weight(slaves_pport.slaves,
1766                                 dev->persist->num_vfs + 1) - 1;
1767
1768         for (i = 0; i < MLX4_ROCE_MAX_GIDS; i++) {
1769                 if (!memcmp(priv->port[port].gid_table.roce_gids[i].raw, gid,
1770                             MLX4_ROCE_GID_ENTRY_SIZE)) {
1771                         found_ix = i;
1772                         break;
1773                 }
1774         }
1775
1776         if (found_ix >= 0) {
1777                 /* Calculate a slave_gid which is the slave number in the gid
1778                  * table and not a globally unique slave number.
1779                  */
1780                 if (found_ix < MLX4_ROCE_PF_GIDS)
1781                         slave_gid = 0;
1782                 else if (found_ix < MLX4_ROCE_PF_GIDS + (vf_gids % num_vfs) *
1783                          (vf_gids / num_vfs + 1))
1784                         slave_gid = ((found_ix - MLX4_ROCE_PF_GIDS) /
1785                                      (vf_gids / num_vfs + 1)) + 1;
1786                 else
1787                         slave_gid =
1788                         ((found_ix - MLX4_ROCE_PF_GIDS -
1789                           ((vf_gids % num_vfs) * ((vf_gids / num_vfs + 1)))) /
1790                          (vf_gids / num_vfs)) + vf_gids % num_vfs + 1;
1791
1792                 /* Calculate the globally unique slave id */
1793                 if (slave_gid) {
1794                         struct mlx4_active_ports exclusive_ports;
1795                         struct mlx4_active_ports actv_ports;
1796                         struct mlx4_slaves_pport slaves_pport_actv;
1797                         unsigned max_port_p_one;
1798                         int num_vfs_before = 0;
1799                         int candidate_slave_gid;
1800
1801                         /* Calculate how many VFs are on the previous port, if exists */
1802                         for (i = 1; i < port; i++) {
1803                                 bitmap_zero(exclusive_ports.ports, dev->caps.num_ports);
1804                                 set_bit(i - 1, exclusive_ports.ports);
1805                                 slaves_pport_actv =
1806                                         mlx4_phys_to_slaves_pport_actv(
1807                                                         dev, &exclusive_ports);
1808                                 num_vfs_before += bitmap_weight(
1809                                                 slaves_pport_actv.slaves,
1810                                                 dev->persist->num_vfs + 1);
1811                         }
1812
1813                         /* candidate_slave_gid isn't necessarily the correct slave, but
1814                          * it has the same number of ports and is assigned to the same
1815                          * ports as the real slave we're looking for. On dual port VF,
1816                          * slave_gid = [single port VFs on port <port>] +
1817                          * [offset of the current slave from the first dual port VF] +
1818                          * 1 (for the PF).
1819                          */
1820                         candidate_slave_gid = slave_gid + num_vfs_before;
1821
1822                         actv_ports = mlx4_get_active_ports(dev, candidate_slave_gid);
1823                         max_port_p_one = find_first_bit(
1824                                 actv_ports.ports, dev->caps.num_ports) +
1825                                 bitmap_weight(actv_ports.ports,
1826                                               dev->caps.num_ports) + 1;
1827
1828                         /* Calculate the real slave number */
1829                         for (i = 1; i < max_port_p_one; i++) {
1830                                 if (i == port)
1831                                         continue;
1832                                 bitmap_zero(exclusive_ports.ports,
1833                                             dev->caps.num_ports);
1834                                 set_bit(i - 1, exclusive_ports.ports);
1835                                 slaves_pport_actv =
1836                                         mlx4_phys_to_slaves_pport_actv(
1837                                                 dev, &exclusive_ports);
1838                                 slave_gid += bitmap_weight(
1839                                                 slaves_pport_actv.slaves,
1840                                                 dev->persist->num_vfs + 1);
1841                         }
1842                 }
1843                 *slave_id = slave_gid;
1844         }
1845
1846         return (found_ix >= 0) ? 0 : -EINVAL;
1847 }
1848 EXPORT_SYMBOL(mlx4_get_slave_from_roce_gid);
1849
1850 int mlx4_get_roce_gid_from_slave(struct mlx4_dev *dev, int port, int slave_id,
1851                                  u8 *gid)
1852 {
1853         struct mlx4_priv *priv = mlx4_priv(dev);
1854
1855         if (!mlx4_is_master(dev))
1856                 return -EINVAL;
1857
1858         memcpy(gid, priv->port[port].gid_table.roce_gids[slave_id].raw,
1859                MLX4_ROCE_GID_ENTRY_SIZE);
1860         return 0;
1861 }
1862 EXPORT_SYMBOL(mlx4_get_roce_gid_from_slave);
1863
1864 /* Cable Module Info */
1865 #define MODULE_INFO_MAX_READ 48
1866
1867 #define I2C_ADDR_LOW  0x50
1868 #define I2C_ADDR_HIGH 0x51
1869 #define I2C_PAGE_SIZE 256
1870
1871 /* Module Info Data */
1872 struct mlx4_cable_info {
1873         u8      i2c_addr;
1874         u8      page_num;
1875         __be16  dev_mem_address;
1876         __be16  reserved1;
1877         __be16  size;
1878         __be32  reserved2[2];
1879         u8      data[MODULE_INFO_MAX_READ];
1880 };
1881
1882 enum cable_info_err {
1883          CABLE_INF_INV_PORT      = 0x1,
1884          CABLE_INF_OP_NOSUP      = 0x2,
1885          CABLE_INF_NOT_CONN      = 0x3,
1886          CABLE_INF_NO_EEPRM      = 0x4,
1887          CABLE_INF_PAGE_ERR      = 0x5,
1888          CABLE_INF_INV_ADDR      = 0x6,
1889          CABLE_INF_I2C_ADDR      = 0x7,
1890          CABLE_INF_QSFP_VIO      = 0x8,
1891          CABLE_INF_I2C_BUSY      = 0x9,
1892 };
1893
1894 #define MAD_STATUS_2_CABLE_ERR(mad_status) ((mad_status >> 8) & 0xFF)
1895
1896 static inline const char *cable_info_mad_err_str(u16 mad_status)
1897 {
1898         u8 err = MAD_STATUS_2_CABLE_ERR(mad_status);
1899
1900         switch (err) {
1901         case CABLE_INF_INV_PORT:
1902                 return "invalid port selected";
1903         case CABLE_INF_OP_NOSUP:
1904                 return "operation not supported for this port (the port is of type CX4 or internal)";
1905         case CABLE_INF_NOT_CONN:
1906                 return "cable is not connected";
1907         case CABLE_INF_NO_EEPRM:
1908                 return "the connected cable has no EPROM (passive copper cable)";
1909         case CABLE_INF_PAGE_ERR:
1910                 return "page number is greater than 15";
1911         case CABLE_INF_INV_ADDR:
1912                 return "invalid device_address or size (that is, size equals 0 or address+size is greater than 256)";
1913         case CABLE_INF_I2C_ADDR:
1914                 return "invalid I2C slave address";
1915         case CABLE_INF_QSFP_VIO:
1916                 return "at least one cable violates the QSFP specification and ignores the modsel signal";
1917         case CABLE_INF_I2C_BUSY:
1918                 return "I2C bus is constantly busy";
1919         }
1920         return "Unknown Error";
1921 }
1922
1923 /**
1924  * mlx4_get_module_info - Read cable module eeprom data
1925  * @dev: mlx4_dev.
1926  * @port: port number.
1927  * @offset: byte offset in eeprom to start reading data from.
1928  * @size: num of bytes to read.
1929  * @data: output buffer to put the requested data into.
1930  *
1931  * Reads cable module eeprom data, puts the outcome data into
1932  * data pointer paramer.
1933  * Returns num of read bytes on success or a negative error
1934  * code.
1935  */
1936 int mlx4_get_module_info(struct mlx4_dev *dev, u8 port,
1937                          u16 offset, u16 size, u8 *data)
1938 {
1939         struct mlx4_cmd_mailbox *inbox, *outbox;
1940         struct mlx4_mad_ifc *inmad, *outmad;
1941         struct mlx4_cable_info *cable_info;
1942         u16 i2c_addr;
1943         int ret;
1944
1945         if (size > MODULE_INFO_MAX_READ)
1946                 size = MODULE_INFO_MAX_READ;
1947
1948         inbox = mlx4_alloc_cmd_mailbox(dev);
1949         if (IS_ERR(inbox))
1950                 return PTR_ERR(inbox);
1951
1952         outbox = mlx4_alloc_cmd_mailbox(dev);
1953         if (IS_ERR(outbox)) {
1954                 mlx4_free_cmd_mailbox(dev, inbox);
1955                 return PTR_ERR(outbox);
1956         }
1957
1958         inmad = (struct mlx4_mad_ifc *)(inbox->buf);
1959         outmad = (struct mlx4_mad_ifc *)(outbox->buf);
1960
1961         inmad->method = 0x1; /* Get */
1962         inmad->class_version = 0x1;
1963         inmad->mgmt_class = 0x1;
1964         inmad->base_version = 0x1;
1965         inmad->attr_id = cpu_to_be16(0xFF60); /* Module Info */
1966
1967         if (offset < I2C_PAGE_SIZE && offset + size > I2C_PAGE_SIZE)
1968                 /* Cross pages reads are not allowed
1969                  * read until offset 256 in low page
1970                  */
1971                 size -= offset + size - I2C_PAGE_SIZE;
1972
1973         i2c_addr = I2C_ADDR_LOW;
1974         if (offset >= I2C_PAGE_SIZE) {
1975                 /* Reset offset to high page */
1976                 i2c_addr = I2C_ADDR_HIGH;
1977                 offset -= I2C_PAGE_SIZE;
1978         }
1979
1980         cable_info = (struct mlx4_cable_info *)inmad->data;
1981         cable_info->dev_mem_address = cpu_to_be16(offset);
1982         cable_info->page_num = 0;
1983         cable_info->i2c_addr = i2c_addr;
1984         cable_info->size = cpu_to_be16(size);
1985
1986         ret = mlx4_cmd_box(dev, inbox->dma, outbox->dma, port, 3,
1987                            MLX4_CMD_MAD_IFC, MLX4_CMD_TIME_CLASS_C,
1988                            MLX4_CMD_NATIVE);
1989         if (ret)
1990                 goto out;
1991
1992         if (be16_to_cpu(outmad->status)) {
1993                 /* Mad returned with bad status */
1994                 ret = be16_to_cpu(outmad->status);
1995                 mlx4_warn(dev,
1996                           "MLX4_CMD_MAD_IFC Get Module info attr(%x) port(%d) i2c_addr(%x) offset(%d) size(%d): Response Mad Status(%x) - %s\n",
1997                           0xFF60, port, i2c_addr, offset, size,
1998                           ret, cable_info_mad_err_str(ret));
1999
2000                 if (i2c_addr == I2C_ADDR_HIGH &&
2001                     MAD_STATUS_2_CABLE_ERR(ret) == CABLE_INF_I2C_ADDR)
2002                         /* Some SFP cables do not support i2c slave
2003                          * address 0x51 (high page), abort silently.
2004                          */
2005                         ret = 0;
2006                 else
2007                         ret = -ret;
2008                 goto out;
2009         }
2010         cable_info = (struct mlx4_cable_info *)outmad->data;
2011         memcpy(data, cable_info->data, size);
2012         ret = size;
2013 out:
2014         mlx4_free_cmd_mailbox(dev, inbox);
2015         mlx4_free_cmd_mailbox(dev, outbox);
2016         return ret;
2017 }
2018 EXPORT_SYMBOL(mlx4_get_module_info);
2019
2020 int mlx4_max_tc(struct mlx4_dev *dev)
2021 {
2022         u8 num_tc = dev->caps.max_tc_eth;
2023
2024         if (!num_tc)
2025                 num_tc = MLNX4_TX_MAX_NUMBER;
2026
2027         return num_tc;
2028 }
2029 EXPORT_SYMBOL(mlx4_max_tc);