kernel/drivers/net/ethernet/broadcom/bnx2x/bnx2x_dcb.c

   1 /* bnx2x_dcb.c: Broadcom Everest network driver.
   2  *
   3  * Copyright 2009-2013 Broadcom Corporation
   4  *
   5  * Unless you and Broadcom execute a separate written software license
   6  * agreement governing use of this software, this software is licensed to you
   7  * under the terms of the GNU General Public License version 2, available
   8  * at http://www.gnu.org/licenses/old-licenses/gpl-2.0.html (the "GPL").
   9  *
  10  * Notwithstanding the above, under no circumstances may you combine this
  11  * software in any way with any other Broadcom software provided under a
  12  * license other than the GPL, without Broadcom's express prior written
  13  * consent.
  14  *
  15  * Maintained by: Ariel Elior <ariel.elior@qlogic.com>
  16  * Written by: Dmitry Kravkov
  17  *
  18  */
  19
  20 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
  21
  22 #include <linux/netdevice.h>
  23 #include <linux/types.h>
  24 #include <linux/errno.h>
  25 #include <linux/rtnetlink.h>
  26 #include <net/dcbnl.h>
  27
  28 #include "bnx2x.h"
  29 #include "bnx2x_cmn.h"
  30 #include "bnx2x_dcb.h"
  31
  32 /* forward declarations of dcbx related functions */
  33 static void bnx2x_pfc_set_pfc(struct bnx2x *bp);
  34 static void bnx2x_dcbx_update_ets_params(struct bnx2x *bp);
  35 static void bnx2x_dcbx_get_ets_pri_pg_tbl(struct bnx2x *bp,
  36                                           u32 *set_configuration_ets_pg,
  37                                           u32 *pri_pg_tbl);
  38 static void bnx2x_dcbx_get_num_pg_traf_type(struct bnx2x *bp,
  39                                             u32 *pg_pri_orginal_spread,
  40                                             struct pg_help_data *help_data);
  41 static void bnx2x_dcbx_fill_cos_params(struct bnx2x *bp,
  42                                        struct pg_help_data *help_data,
  43                                        struct dcbx_ets_feature *ets,
  44                                        u32 *pg_pri_orginal_spread);
  45 static void bnx2x_dcbx_separate_pauseable_from_non(struct bnx2x *bp,
  46                                 struct cos_help_data *cos_data,
  47                                 u32 *pg_pri_orginal_spread,
  48                                 struct dcbx_ets_feature *ets);
  49 static void bnx2x_dcbx_fw_struct(struct bnx2x *bp,
  50                                  struct bnx2x_func_tx_start_params*);
  51
  52 /* helpers: read/write len bytes from addr into buff by REG_RD/REG_WR */
  53 static void bnx2x_read_data(struct bnx2x *bp, u32 *buff,
  54                                    u32 addr, u32 len)
  55 {
  56         int i;
  57         for (i = 0; i < len; i += 4, buff++)
  58                 *buff = REG_RD(bp, addr + i);
  59 }
  60
  61 static void bnx2x_write_data(struct bnx2x *bp, u32 *buff,
  62                                     u32 addr, u32 len)
  63 {
  64         int i;
  65         for (i = 0; i < len; i += 4, buff++)
  66                 REG_WR(bp, addr + i, *buff);
  67 }
  68
  69 static void bnx2x_pfc_set(struct bnx2x *bp)
  70 {
  71         struct bnx2x_nig_brb_pfc_port_params pfc_params = {0};
  72         u32 pri_bit, val = 0;
  73         int i;
  74
  75         pfc_params.num_of_rx_cos_priority_mask =
  76                                         bp->dcbx_port_params.ets.num_of_cos;
  77
  78         /* Tx COS configuration */
  79         for (i = 0; i < bp->dcbx_port_params.ets.num_of_cos; i++)
  80                 /*
  81                  * We configure only the pauseable bits (non pauseable aren't
  82                  * configured at all) it's done to avoid false pauses from
  83                  * network
  84                  */
  85                 pfc_params.rx_cos_priority_mask[i] =
  86                         bp->dcbx_port_params.ets.cos_params[i].pri_bitmask
  87                                 & DCBX_PFC_PRI_PAUSE_MASK(bp);
  88
  89         /*
  90          * Rx COS configuration
  91          * Changing PFC RX configuration .
  92          * In RX COS0 will always be configured to lossless and COS1 to lossy
  93          */
  94         for (i = 0 ; i < MAX_PFC_PRIORITIES ; i++) {
  95                 pri_bit = 1 << i;
  96
  97                 if (!(pri_bit & DCBX_PFC_PRI_PAUSE_MASK(bp)))
  98                         val |= 1 << (i * 4);
  99         }
 100
 101         pfc_params.pkt_priority_to_cos = val;
 102
 103         /* RX COS0 */
 104         pfc_params.llfc_low_priority_classes = DCBX_PFC_PRI_PAUSE_MASK(bp);
 105         /* RX COS1 */
 106         pfc_params.llfc_high_priority_classes = 0;
 107
 108         bnx2x_acquire_phy_lock(bp);
 109         bp->link_params.feature_config_flags |= FEATURE_CONFIG_PFC_ENABLED;
 110         bnx2x_update_pfc(&bp->link_params, &bp->link_vars, &pfc_params);
 111         bnx2x_release_phy_lock(bp);
 112 }
 113
 114 static void bnx2x_pfc_clear(struct bnx2x *bp)
 115 {
 116         struct bnx2x_nig_brb_pfc_port_params nig_params = {0};
 117         nig_params.pause_enable = 1;
 118         bnx2x_acquire_phy_lock(bp);
 119         bp->link_params.feature_config_flags &= ~FEATURE_CONFIG_PFC_ENABLED;
 120         bnx2x_update_pfc(&bp->link_params, &bp->link_vars, &nig_params);
 121         bnx2x_release_phy_lock(bp);
 122 }
 123
 124 static void  bnx2x_dump_dcbx_drv_param(struct bnx2x *bp,
 125                                        struct dcbx_features *features,
 126                                        u32 error)
 127 {
 128         u8 i = 0;
 129         DP(NETIF_MSG_LINK, "local_mib.error %x\n", error);
 130
 131         /* PG */
 132         DP(NETIF_MSG_LINK,
 133            "local_mib.features.ets.enabled %x\n", features->ets.enabled);
 134         for (i = 0; i < DCBX_MAX_NUM_PG_BW_ENTRIES; i++)
 135                 DP(NETIF_MSG_LINK,
 136                    "local_mib.features.ets.pg_bw_tbl[%d] %d\n", i,
 137                    DCBX_PG_BW_GET(features->ets.pg_bw_tbl, i));
 138         for (i = 0; i < DCBX_MAX_NUM_PRI_PG_ENTRIES; i++)
 139                 DP(NETIF_MSG_LINK,
 140                    "local_mib.features.ets.pri_pg_tbl[%d] %d\n", i,
 141                    DCBX_PRI_PG_GET(features->ets.pri_pg_tbl, i));
 142
 143         /* pfc */
 144         DP(BNX2X_MSG_DCB, "dcbx_features.pfc.pri_en_bitmap %x\n",
 145                                         features->pfc.pri_en_bitmap);
 146         DP(BNX2X_MSG_DCB, "dcbx_features.pfc.pfc_caps %x\n",
 147                                         features->pfc.pfc_caps);
 148         DP(BNX2X_MSG_DCB, "dcbx_features.pfc.enabled %x\n",
 149                                         features->pfc.enabled);
 150
 151         DP(BNX2X_MSG_DCB, "dcbx_features.app.default_pri %x\n",
 152                                         features->app.default_pri);
 153         DP(BNX2X_MSG_DCB, "dcbx_features.app.tc_supported %x\n",
 154                                         features->app.tc_supported);
 155         DP(BNX2X_MSG_DCB, "dcbx_features.app.enabled %x\n",
 156                                         features->app.enabled);
 157         for (i = 0; i < DCBX_MAX_APP_PROTOCOL; i++) {
 158                 DP(BNX2X_MSG_DCB,
 159                    "dcbx_features.app.app_pri_tbl[%x].app_id %x\n",
 160                    i, features->app.app_pri_tbl[i].app_id);
 161                 DP(BNX2X_MSG_DCB,
 162                    "dcbx_features.app.app_pri_tbl[%x].pri_bitmap %x\n",
 163                    i, features->app.app_pri_tbl[i].pri_bitmap);
 164                 DP(BNX2X_MSG_DCB,
 165                    "dcbx_features.app.app_pri_tbl[%x].appBitfield %x\n",
 166                    i, features->app.app_pri_tbl[i].appBitfield);
 167         }
 168 }
 169
 170 static void bnx2x_dcbx_get_ap_priority(struct bnx2x *bp,
 171                                        u8 pri_bitmap,
 172                                        u8 llfc_traf_type)
 173 {
 174         u32 pri = MAX_PFC_PRIORITIES;
 175         u32 index = MAX_PFC_PRIORITIES - 1;
 176         u32 pri_mask;
 177         u32 *ttp = bp->dcbx_port_params.app.traffic_type_priority;
 178
 179         /* Choose the highest priority */
 180         while ((MAX_PFC_PRIORITIES == pri) && (0 != index)) {
 181                 pri_mask = 1 << index;
 182                 if (GET_FLAGS(pri_bitmap, pri_mask))
 183                         pri = index ;
 184                 index--;
 185         }
 186
 187         if (pri < MAX_PFC_PRIORITIES)
 188                 ttp[llfc_traf_type] = max_t(u32, ttp[llfc_traf_type], pri);
 189 }
 190
 191 static void bnx2x_dcbx_get_ap_feature(struct bnx2x *bp,
 192                                    struct dcbx_app_priority_feature *app,
 193                                    u32 error) {
 194         u8 index;
 195         u32 *ttp = bp->dcbx_port_params.app.traffic_type_priority;
 196
 197         if (GET_FLAGS(error, DCBX_LOCAL_APP_ERROR))
 198                 DP(BNX2X_MSG_DCB, "DCBX_LOCAL_APP_ERROR\n");
 199
 200         if (GET_FLAGS(error, DCBX_LOCAL_APP_MISMATCH))
 201                 DP(BNX2X_MSG_DCB, "DCBX_LOCAL_APP_MISMATCH\n");
 202
 203         if (GET_FLAGS(error, DCBX_REMOTE_APP_TLV_NOT_FOUND))
 204                 DP(BNX2X_MSG_DCB, "DCBX_REMOTE_APP_TLV_NOT_FOUND\n");
 205         if (app->enabled &&
 206             !GET_FLAGS(error, DCBX_LOCAL_APP_ERROR | DCBX_LOCAL_APP_MISMATCH |
 207                               DCBX_REMOTE_APP_TLV_NOT_FOUND)) {
 208
 209                 bp->dcbx_port_params.app.enabled = true;
 210
 211                 for (index = 0 ; index < LLFC_DRIVER_TRAFFIC_TYPE_MAX; index++)
 212                         ttp[index] = 0;
 213
 214                 if (app->default_pri < MAX_PFC_PRIORITIES)
 215                         ttp[LLFC_TRAFFIC_TYPE_NW] = app->default_pri;
 216
 217                 for (index = 0 ; index < DCBX_MAX_APP_PROTOCOL; index++) {
 218                         struct dcbx_app_priority_entry *entry =
 219                                                         app->app_pri_tbl;
 220
 221                         if (GET_FLAGS(entry[index].appBitfield,
 222                                      DCBX_APP_SF_ETH_TYPE) &&
 223                            ETH_TYPE_FCOE == entry[index].app_id)
 224                                 bnx2x_dcbx_get_ap_priority(bp,
 225                                                 entry[index].pri_bitmap,
 226                                                 LLFC_TRAFFIC_TYPE_FCOE);
 227
 228                         if (GET_FLAGS(entry[index].appBitfield,
 229                                      DCBX_APP_SF_PORT) &&
 230                            TCP_PORT_ISCSI == entry[index].app_id)
 231                                 bnx2x_dcbx_get_ap_priority(bp,
 232                                                 entry[index].pri_bitmap,
 233                                                 LLFC_TRAFFIC_TYPE_ISCSI);
 234                 }
 235         } else {
 236                 DP(BNX2X_MSG_DCB, "DCBX_LOCAL_APP_DISABLED\n");
 237                 bp->dcbx_port_params.app.enabled = false;
 238                 for (index = 0 ; index < LLFC_DRIVER_TRAFFIC_TYPE_MAX; index++)
 239                         ttp[index] = INVALID_TRAFFIC_TYPE_PRIORITY;
 240         }
 241 }
 242
 243 static void bnx2x_dcbx_get_ets_feature(struct bnx2x *bp,
 244                                        struct dcbx_ets_feature *ets,
 245                                        u32 error) {
 246         int i = 0;
 247         u32 pg_pri_orginal_spread[DCBX_MAX_NUM_PG_BW_ENTRIES] = {0};
 248         struct pg_help_data pg_help_data;
 249         struct bnx2x_dcbx_cos_params *cos_params =
 250                         bp->dcbx_port_params.ets.cos_params;
 251
 252         memset(&pg_help_data, 0, sizeof(struct pg_help_data));
 253
 254         if (GET_FLAGS(error, DCBX_LOCAL_ETS_ERROR))
 255                 DP(BNX2X_MSG_DCB, "DCBX_LOCAL_ETS_ERROR\n");
 256
 257         if (GET_FLAGS(error, DCBX_REMOTE_ETS_TLV_NOT_FOUND))
 258                 DP(BNX2X_MSG_DCB, "DCBX_REMOTE_ETS_TLV_NOT_FOUND\n");
 259
 260         /* Clean up old settings of ets on COS */
 261         for (i = 0; i < ARRAY_SIZE(bp->dcbx_port_params.ets.cos_params) ; i++) {
 262                 cos_params[i].pauseable = false;
 263                 cos_params[i].strict = BNX2X_DCBX_STRICT_INVALID;
 264                 cos_params[i].bw_tbl = DCBX_INVALID_COS_BW;
 265                 cos_params[i].pri_bitmask = 0;
 266         }
 267
 268         if (bp->dcbx_port_params.app.enabled && ets->enabled &&
 269            !GET_FLAGS(error,
 270                       DCBX_LOCAL_ETS_ERROR | DCBX_REMOTE_ETS_TLV_NOT_FOUND)) {
 271                 DP(BNX2X_MSG_DCB, "DCBX_LOCAL_ETS_ENABLE\n");
 272                 bp->dcbx_port_params.ets.enabled = true;
 273
 274                 bnx2x_dcbx_get_ets_pri_pg_tbl(bp,
 275                                               pg_pri_orginal_spread,
 276                                               ets->pri_pg_tbl);
 277
 278                 bnx2x_dcbx_get_num_pg_traf_type(bp,
 279                                                 pg_pri_orginal_spread,
 280                                                 &pg_help_data);
 281
 282                 bnx2x_dcbx_fill_cos_params(bp, &pg_help_data,
 283                                            ets, pg_pri_orginal_spread);
 284
 285         } else {
 286                 DP(BNX2X_MSG_DCB, "DCBX_LOCAL_ETS_DISABLED\n");
 287                 bp->dcbx_port_params.ets.enabled = false;
 288                 ets->pri_pg_tbl[0] = 0;
 289
 290                 for (i = 0; i < DCBX_MAX_NUM_PRI_PG_ENTRIES ; i++)
 291                         DCBX_PG_BW_SET(ets->pg_bw_tbl, i, 1);
 292         }
 293 }
 294
 295 static void  bnx2x_dcbx_get_pfc_feature(struct bnx2x *bp,
 296                                         struct dcbx_pfc_feature *pfc, u32 error)
 297 {
 298         if (GET_FLAGS(error, DCBX_LOCAL_PFC_ERROR))
 299                 DP(BNX2X_MSG_DCB, "DCBX_LOCAL_PFC_ERROR\n");
 300
 301         if (GET_FLAGS(error, DCBX_REMOTE_PFC_TLV_NOT_FOUND))
 302                 DP(BNX2X_MSG_DCB, "DCBX_REMOTE_PFC_TLV_NOT_FOUND\n");
 303         if (bp->dcbx_port_params.app.enabled && pfc->enabled &&
 304            !GET_FLAGS(error, DCBX_LOCAL_PFC_ERROR | DCBX_LOCAL_PFC_MISMATCH |
 305                              DCBX_REMOTE_PFC_TLV_NOT_FOUND)) {
 306                 bp->dcbx_port_params.pfc.enabled = true;
 307                 bp->dcbx_port_params.pfc.priority_non_pauseable_mask =
 308                         ~(pfc->pri_en_bitmap);
 309         } else {
 310                 DP(BNX2X_MSG_DCB, "DCBX_LOCAL_PFC_DISABLED\n");
 311                 bp->dcbx_port_params.pfc.enabled = false;
 312                 bp->dcbx_port_params.pfc.priority_non_pauseable_mask = 0;
 313         }
 314 }
 315
 316 /* maps unmapped priorities to to the same COS as L2 */
 317 static void bnx2x_dcbx_map_nw(struct bnx2x *bp)
 318 {
 319         int i;
 320         u32 unmapped = (1 << MAX_PFC_PRIORITIES) - 1; /* all ones */
 321         u32 *ttp = bp->dcbx_port_params.app.traffic_type_priority;
 322         u32 nw_prio = 1 << ttp[LLFC_TRAFFIC_TYPE_NW];
 323         struct bnx2x_dcbx_cos_params *cos_params =
 324                         bp->dcbx_port_params.ets.cos_params;
 325
 326         /* get unmapped priorities by clearing mapped bits */
 327         for (i = 0; i < LLFC_DRIVER_TRAFFIC_TYPE_MAX; i++)
 328                 unmapped &= ~(1 << ttp[i]);
 329
 330         /* find cos for nw prio and extend it with unmapped */
 331         for (i = 0; i < ARRAY_SIZE(bp->dcbx_port_params.ets.cos_params); i++) {
 332                 if (cos_params[i].pri_bitmask & nw_prio) {
 333                         /* extend the bitmask with unmapped */
 334                         DP(BNX2X_MSG_DCB,
 335                            "cos %d extended with 0x%08x\n", i, unmapped);
 336                         cos_params[i].pri_bitmask |= unmapped;
 337                         break;
 338                 }
 339         }
 340 }
 341
 342 static void bnx2x_get_dcbx_drv_param(struct bnx2x *bp,
 343                                      struct dcbx_features *features,
 344                                      u32 error)
 345 {
 346         bnx2x_dcbx_get_ap_feature(bp, &features->app, error);
 347
 348         bnx2x_dcbx_get_pfc_feature(bp, &features->pfc, error);
 349
 350         bnx2x_dcbx_get_ets_feature(bp, &features->ets, error);
 351
 352         bnx2x_dcbx_map_nw(bp);
 353 }
 354
 355 #define DCBX_LOCAL_MIB_MAX_TRY_READ             (100)
 356 static int bnx2x_dcbx_read_mib(struct bnx2x *bp,
 357                                u32 *base_mib_addr,
 358                                u32 offset,
 359                                int read_mib_type)
 360 {
 361         int max_try_read = 0;
 362         u32 mib_size, prefix_seq_num, suffix_seq_num;
 363         struct lldp_remote_mib *remote_mib ;
 364         struct lldp_local_mib  *local_mib;
 365
 366         switch (read_mib_type) {
 367         case DCBX_READ_LOCAL_MIB:
 368                 mib_size = sizeof(struct lldp_local_mib);
 369                 break;
 370         case DCBX_READ_REMOTE_MIB:
 371                 mib_size = sizeof(struct lldp_remote_mib);
 372                 break;
 373         default:
 374                 return 1; /*error*/
 375         }
 376
 377         offset += BP_PORT(bp) * mib_size;
 378
 379         do {
 380                 bnx2x_read_data(bp, base_mib_addr, offset, mib_size);
 381
 382                 max_try_read++;
 383
 384                 switch (read_mib_type) {
 385                 case DCBX_READ_LOCAL_MIB:
 386                         local_mib = (struct lldp_local_mib *) base_mib_addr;
 387                         prefix_seq_num = local_mib->prefix_seq_num;
 388                         suffix_seq_num = local_mib->suffix_seq_num;
 389                         break;
 390                 case DCBX_READ_REMOTE_MIB:
 391                         remote_mib = (struct lldp_remote_mib *) base_mib_addr;
 392                         prefix_seq_num = remote_mib->prefix_seq_num;
 393                         suffix_seq_num = remote_mib->suffix_seq_num;
 394                         break;
 395                 default:
 396                         return 1; /*error*/
 397                 }
 398         } while ((prefix_seq_num != suffix_seq_num) &&
 399                (max_try_read < DCBX_LOCAL_MIB_MAX_TRY_READ));
 400
 401         if (max_try_read >= DCBX_LOCAL_MIB_MAX_TRY_READ) {
 402                 BNX2X_ERR("MIB could not be read\n");
 403                 return 1;
 404         }
 405
 406         return 0;
 407 }
 408
 409 static void bnx2x_pfc_set_pfc(struct bnx2x *bp)
 410 {
 411         int mfw_configured = SHMEM2_HAS(bp, drv_flags) &&
 412                              GET_FLAGS(SHMEM2_RD(bp, drv_flags),
 413                                        1 << DRV_FLAGS_DCB_MFW_CONFIGURED);
 414
 415         if (bp->dcbx_port_params.pfc.enabled &&
 416             (!(bp->dcbx_error & DCBX_REMOTE_MIB_ERROR) || mfw_configured))
 417                 /*
 418                  * 1. Fills up common PFC structures if required
 419                  * 2. Configure NIG, MAC and BRB via the elink
 420                  */
 421                 bnx2x_pfc_set(bp);
 422         else
 423                 bnx2x_pfc_clear(bp);
 424 }
 425
 426 int bnx2x_dcbx_stop_hw_tx(struct bnx2x *bp)
 427 {
 428         struct bnx2x_func_state_params func_params = {NULL};
 429         int rc;
 430
 431         func_params.f_obj = &bp->func_obj;
 432         func_params.cmd = BNX2X_F_CMD_TX_STOP;
 433
 434         __set_bit(RAMROD_COMP_WAIT, &func_params.ramrod_flags);
 435         __set_bit(RAMROD_RETRY, &func_params.ramrod_flags);
 436
 437         DP(BNX2X_MSG_DCB, "STOP TRAFFIC\n");
 438
 439         rc = bnx2x_func_state_change(bp, &func_params);
 440         if (rc) {
 441                 BNX2X_ERR("Unable to hold traffic for HW configuration\n");
 442                 bnx2x_panic();
 443         }
 444
 445         return rc;
 446 }
 447
 448 int bnx2x_dcbx_resume_hw_tx(struct bnx2x *bp)
 449 {
 450         struct bnx2x_func_state_params func_params = {NULL};
 451         struct bnx2x_func_tx_start_params *tx_params =
 452                 &func_params.params.tx_start;
 453         int rc;
 454
 455         func_params.f_obj = &bp->func_obj;
 456         func_params.cmd = BNX2X_F_CMD_TX_START;
 457
 458         __set_bit(RAMROD_COMP_WAIT, &func_params.ramrod_flags);
 459         __set_bit(RAMROD_RETRY, &func_params.ramrod_flags);
 460
 461         bnx2x_dcbx_fw_struct(bp, tx_params);
 462
 463         DP(BNX2X_MSG_DCB, "START TRAFFIC\n");
 464
 465         rc = bnx2x_func_state_change(bp, &func_params);
 466         if (rc) {
 467                 BNX2X_ERR("Unable to resume traffic after HW configuration\n");
 468                 bnx2x_panic();
 469         }
 470
 471         return rc;
 472 }
 473
 474 static void bnx2x_dcbx_2cos_limit_update_ets_config(struct bnx2x *bp)
 475 {
 476         struct bnx2x_dcbx_pg_params *ets = &(bp->dcbx_port_params.ets);
 477         int rc = 0;
 478
 479         if (ets->num_of_cos == 0 || ets->num_of_cos > DCBX_COS_MAX_NUM_E2) {
 480                 BNX2X_ERR("Illegal number of COSes %d\n", ets->num_of_cos);
 481                 return;
 482         }
 483
 484         /* valid COS entries */
 485         if (ets->num_of_cos == 1)   /* no ETS */
 486                 return;
 487
 488         /* sanity */
 489         if (((BNX2X_DCBX_STRICT_INVALID == ets->cos_params[0].strict) &&
 490              (DCBX_INVALID_COS_BW == ets->cos_params[0].bw_tbl)) ||
 491             ((BNX2X_DCBX_STRICT_INVALID == ets->cos_params[1].strict) &&
 492              (DCBX_INVALID_COS_BW == ets->cos_params[1].bw_tbl))) {
 493                 BNX2X_ERR("all COS should have at least bw_limit or strict"
 494                             "ets->cos_params[0].strict= %x"
 495                             "ets->cos_params[0].bw_tbl= %x"
 496                             "ets->cos_params[1].strict= %x"
 497                             "ets->cos_params[1].bw_tbl= %x",
 498                           ets->cos_params[0].strict,
 499                           ets->cos_params[0].bw_tbl,
 500                           ets->cos_params[1].strict,
 501                           ets->cos_params[1].bw_tbl);
 502                 return;
 503         }
 504         /* If we join a group and there is bw_tbl and strict then bw rules */
 505         if ((DCBX_INVALID_COS_BW != ets->cos_params[0].bw_tbl) &&
 506             (DCBX_INVALID_COS_BW != ets->cos_params[1].bw_tbl)) {
 507                 u32 bw_tbl_0 = ets->cos_params[0].bw_tbl;
 508                 u32 bw_tbl_1 = ets->cos_params[1].bw_tbl;
 509                 /* Do not allow 0-100 configuration
 510                  * since PBF does not support it
 511                  * force 1-99 instead
 512                  */
 513                 if (bw_tbl_0 == 0) {
 514                         bw_tbl_0 = 1;
 515                         bw_tbl_1 = 99;
 516                 } else if (bw_tbl_1 == 0) {
 517                         bw_tbl_1 = 1;
 518                         bw_tbl_0 = 99;
 519                 }
 520
 521                 bnx2x_ets_bw_limit(&bp->link_params, bw_tbl_0, bw_tbl_1);
 522         } else {
 523                 if (ets->cos_params[0].strict == BNX2X_DCBX_STRICT_COS_HIGHEST)
 524                         rc = bnx2x_ets_strict(&bp->link_params, 0);
 525                 else if (ets->cos_params[1].strict
 526                                         == BNX2X_DCBX_STRICT_COS_HIGHEST)
 527                         rc = bnx2x_ets_strict(&bp->link_params, 1);
 528                 if (rc)
 529                         BNX2X_ERR("update_ets_params failed\n");
 530         }
 531 }
 532
 533 /*
 534  * In E3B0 the configuration may have more than 2 COS.
 535  */
 536 static void bnx2x_dcbx_update_ets_config(struct bnx2x *bp)
 537 {
 538         struct bnx2x_dcbx_pg_params *ets = &(bp->dcbx_port_params.ets);
 539         struct bnx2x_ets_params ets_params = { 0 };
 540         u8 i;
 541
 542         ets_params.num_of_cos = ets->num_of_cos;
 543
 544         for (i = 0; i < ets->num_of_cos; i++) {
 545                 /* COS is SP */
 546                 if (ets->cos_params[i].strict != BNX2X_DCBX_STRICT_INVALID) {
 547                         if (ets->cos_params[i].bw_tbl != DCBX_INVALID_COS_BW) {
 548                                 BNX2X_ERR("COS can't be not BW and not SP\n");
 549                                 return;
 550                         }
 551
 552                         ets_params.cos[i].state = bnx2x_cos_state_strict;
 553                         ets_params.cos[i].params.sp_params.pri =
 554                                                 ets->cos_params[i].strict;
 555                 } else { /* COS is BW */
 556                         if (ets->cos_params[i].bw_tbl == DCBX_INVALID_COS_BW) {
 557                                 BNX2X_ERR("COS can't be not BW and not SP\n");
 558                                 return;
 559                         }
 560                         ets_params.cos[i].state = bnx2x_cos_state_bw;
 561                         ets_params.cos[i].params.bw_params.bw =
 562                                                 (u8)ets->cos_params[i].bw_tbl;
 563                 }
 564         }
 565
 566         /* Configure the ETS in HW */
 567         if (bnx2x_ets_e3b0_config(&bp->link_params, &bp->link_vars,
 568                                   &ets_params)) {
 569                 BNX2X_ERR("bnx2x_ets_e3b0_config failed\n");
 570                 bnx2x_ets_disabled(&bp->link_params, &bp->link_vars);
 571         }
 572 }
 573
 574 static void bnx2x_dcbx_update_ets_params(struct bnx2x *bp)
 575 {
 576         int mfw_configured = SHMEM2_HAS(bp, drv_flags) &&
 577                              GET_FLAGS(SHMEM2_RD(bp, drv_flags),
 578                                        1 << DRV_FLAGS_DCB_MFW_CONFIGURED);
 579
 580         bnx2x_ets_disabled(&bp->link_params, &bp->link_vars);
 581
 582         if (!bp->dcbx_port_params.ets.enabled ||
 583             ((bp->dcbx_error & DCBX_REMOTE_MIB_ERROR) && !mfw_configured))
 584                 return;
 585
 586         if (CHIP_IS_E3B0(bp))
 587                 bnx2x_dcbx_update_ets_config(bp);
 588         else
 589                 bnx2x_dcbx_2cos_limit_update_ets_config(bp);
 590 }
 591
 592 #ifdef BCM_DCBNL
 593 static int bnx2x_dcbx_read_shmem_remote_mib(struct bnx2x *bp)
 594 {
 595         struct lldp_remote_mib remote_mib = {0};
 596         u32 dcbx_remote_mib_offset = SHMEM2_RD(bp, dcbx_remote_mib_offset);
 597         int rc;
 598
 599         DP(BNX2X_MSG_DCB, "dcbx_remote_mib_offset 0x%x\n",
 600            dcbx_remote_mib_offset);
 601
 602         if (SHMEM_DCBX_REMOTE_MIB_NONE == dcbx_remote_mib_offset) {
 603                 BNX2X_ERR("FW doesn't support dcbx_remote_mib_offset\n");
 604                 return -EINVAL;
 605         }
 606
 607         rc = bnx2x_dcbx_read_mib(bp, (u32 *)&remote_mib, dcbx_remote_mib_offset,
 608                                  DCBX_READ_REMOTE_MIB);
 609
 610         if (rc) {
 611                 BNX2X_ERR("Failed to read remote mib from FW\n");
 612                 return rc;
 613         }
 614
 615         /* save features and flags */
 616         bp->dcbx_remote_feat = remote_mib.features;
 617         bp->dcbx_remote_flags = remote_mib.flags;
 618         return 0;
 619 }
 620 #endif
 621
 622 static int bnx2x_dcbx_read_shmem_neg_results(struct bnx2x *bp)
 623 {
 624         struct lldp_local_mib local_mib = {0};
 625         u32 dcbx_neg_res_offset = SHMEM2_RD(bp, dcbx_neg_res_offset);
 626         int rc;
 627
 628         DP(BNX2X_MSG_DCB, "dcbx_neg_res_offset 0x%x\n", dcbx_neg_res_offset);
 629
 630         if (SHMEM_DCBX_NEG_RES_NONE == dcbx_neg_res_offset) {
 631                 BNX2X_ERR("FW doesn't support dcbx_neg_res_offset\n");
 632                 return -EINVAL;
 633         }
 634
 635         rc = bnx2x_dcbx_read_mib(bp, (u32 *)&local_mib, dcbx_neg_res_offset,
 636                                  DCBX_READ_LOCAL_MIB);
 637
 638         if (rc) {
 639                 BNX2X_ERR("Failed to read local mib from FW\n");
 640                 return rc;
 641         }
 642
 643         /* save features and error */
 644         bp->dcbx_local_feat = local_mib.features;
 645         bp->dcbx_error = local_mib.error;
 646         return 0;
 647 }
 648
 649 #ifdef BCM_DCBNL
 650 static inline
 651 u8 bnx2x_dcbx_dcbnl_app_up(struct dcbx_app_priority_entry *ent)
 652 {
 653         u8 pri;
 654
 655         /* Choose the highest priority */
 656         for (pri = MAX_PFC_PRIORITIES - 1; pri > 0; pri--)
 657                 if (ent->pri_bitmap & (1 << pri))
 658                         break;
 659         return pri;
 660 }
 661
 662 static inline
 663 u8 bnx2x_dcbx_dcbnl_app_idtype(struct dcbx_app_priority_entry *ent)
 664 {
 665         return ((ent->appBitfield & DCBX_APP_ENTRY_SF_MASK) ==
 666                 DCBX_APP_SF_PORT) ? DCB_APP_IDTYPE_PORTNUM :
 667                 DCB_APP_IDTYPE_ETHTYPE;
 668 }
 669
 670 int bnx2x_dcbnl_update_applist(struct bnx2x *bp, bool delall)
 671 {
 672         int i, err = 0;
 673
 674         for (i = 0; i < DCBX_MAX_APP_PROTOCOL && err == 0; i++) {
 675                 struct dcbx_app_priority_entry *ent =
 676                         &bp->dcbx_local_feat.app.app_pri_tbl[i];
 677
 678                 if (ent->appBitfield & DCBX_APP_ENTRY_VALID) {
 679                         u8 up = bnx2x_dcbx_dcbnl_app_up(ent);
 680
 681                         /* avoid invalid user-priority */
 682                         if (up) {
 683                                 struct dcb_app app;
 684                                 app.selector = bnx2x_dcbx_dcbnl_app_idtype(ent);
 685                                 app.protocol = ent->app_id;
 686                                 app.priority = delall ? 0 : up;
 687                                 err = dcb_setapp(bp->dev, &app);
 688                         }
 689                 }
 690         }
 691         return err;
 692 }
 693 #endif
 694
 695 static inline void bnx2x_dcbx_update_tc_mapping(struct bnx2x *bp)
 696 {
 697         u8 prio, cos;
 698         for (cos = 0; cos < bp->dcbx_port_params.ets.num_of_cos; cos++) {
 699                 for (prio = 0; prio < BNX2X_MAX_PRIORITY; prio++) {
 700                         if (bp->dcbx_port_params.ets.cos_params[cos].pri_bitmask
 701                             & (1 << prio)) {
 702                                 bp->prio_to_cos[prio] = cos;
 703                                 DP(BNX2X_MSG_DCB,
 704                                    "tx_mapping %d --> %d\n", prio, cos);
 705                         }
 706                 }
 707         }
 708
 709         /* setup tc must be called under rtnl lock, but we can't take it here
 710          * as we are handling an attention on a work queue which must be
 711          * flushed at some rtnl-locked contexts (e.g. if down)
 712          */
 713         bnx2x_schedule_sp_rtnl(bp, BNX2X_SP_RTNL_SETUP_TC, 0);
 714 }
 715
 716 void bnx2x_dcbx_set_params(struct bnx2x *bp, u32 state)
 717 {
 718         switch (state) {
 719         case BNX2X_DCBX_STATE_NEG_RECEIVED:
 720                 {
 721                         DP(BNX2X_MSG_DCB, "BNX2X_DCBX_STATE_NEG_RECEIVED\n");
 722 #ifdef BCM_DCBNL
 723                         /**
 724                          * Delete app tlvs from dcbnl before reading new
 725                          * negotiation results
 726                          */
 727                         bnx2x_dcbnl_update_applist(bp, true);
 728
 729                         /* Read remote mib if dcbx is in the FW */
 730                         if (bnx2x_dcbx_read_shmem_remote_mib(bp))
 731                                 return;
 732 #endif
 733                         /* Read neg results if dcbx is in the FW */
 734                         if (bnx2x_dcbx_read_shmem_neg_results(bp))
 735                                 return;
 736
 737                         bnx2x_dump_dcbx_drv_param(bp, &bp->dcbx_local_feat,
 738                                                   bp->dcbx_error);
 739
 740                         bnx2x_get_dcbx_drv_param(bp, &bp->dcbx_local_feat,
 741                                                  bp->dcbx_error);
 742
 743                         /* mark DCBX result for PMF migration */
 744                         bnx2x_update_drv_flags(bp,
 745                                                1 << DRV_FLAGS_DCB_CONFIGURED,
 746                                                1);
 747 #ifdef BCM_DCBNL
 748                         /*
 749                          * Add new app tlvs to dcbnl
 750                          */
 751                         bnx2x_dcbnl_update_applist(bp, false);
 752 #endif
 753                         /*
 754                          * reconfigure the netdevice with the results of the new
 755                          * dcbx negotiation.
 756                          */
 757                         bnx2x_dcbx_update_tc_mapping(bp);
 758
 759                         /*
 760                          * allow other functions to update their netdevices
 761                          * accordingly
 762                          */
 763                         if (IS_MF(bp))
 764                                 bnx2x_link_sync_notify(bp);
 765
 766                         bnx2x_schedule_sp_rtnl(bp, BNX2X_SP_RTNL_TX_STOP, 0);
 767                         return;
 768                 }
 769         case BNX2X_DCBX_STATE_TX_PAUSED:
 770                 DP(BNX2X_MSG_DCB, "BNX2X_DCBX_STATE_TX_PAUSED\n");
 771                 bnx2x_pfc_set_pfc(bp);
 772
 773                 bnx2x_dcbx_update_ets_params(bp);
 774
 775                 /* ets may affect cmng configuration: reinit it in hw */
 776                 bnx2x_set_local_cmng(bp);
 777                 return;
 778         case BNX2X_DCBX_STATE_TX_RELEASED:
 779                 DP(BNX2X_MSG_DCB, "BNX2X_DCBX_STATE_TX_RELEASED\n");
 780                 bnx2x_fw_command(bp, DRV_MSG_CODE_DCBX_PMF_DRV_OK, 0);
 781 #ifdef BCM_DCBNL
 782                 /*
 783                  * Send a notification for the new negotiated parameters
 784                  */
 785                 dcbnl_cee_notify(bp->dev, RTM_GETDCB, DCB_CMD_CEE_GET, 0, 0);
 786 #endif
 787                 return;
 788         default:
 789                 BNX2X_ERR("Unknown DCBX_STATE\n");
 790         }
 791 }
 792
 793 #define LLDP_ADMIN_MIB_OFFSET(bp)       (PORT_MAX*sizeof(struct lldp_params) + \
 794                                       BP_PORT(bp)*sizeof(struct lldp_admin_mib))
 795
 796 static void bnx2x_dcbx_admin_mib_updated_params(struct bnx2x *bp,
 797                                 u32 dcbx_lldp_params_offset)
 798 {
 799         struct lldp_admin_mib admin_mib;
 800         u32 i, other_traf_type = PREDEFINED_APP_IDX_MAX, traf_type = 0;
 801         u32 offset = dcbx_lldp_params_offset + LLDP_ADMIN_MIB_OFFSET(bp);
 802
 803         /*shortcuts*/
 804         struct dcbx_features *af = &admin_mib.features;
 805         struct bnx2x_config_dcbx_params *dp = &bp->dcbx_config_params;
 806
 807         memset(&admin_mib, 0, sizeof(struct lldp_admin_mib));
 808
 809         /* Read the data first */
 810         bnx2x_read_data(bp, (u32 *)&admin_mib, offset,
 811                         sizeof(struct lldp_admin_mib));
 812
 813         if (bp->dcbx_enabled == BNX2X_DCBX_ENABLED_ON_NEG_ON)
 814                 SET_FLAGS(admin_mib.ver_cfg_flags, DCBX_DCBX_ENABLED);
 815         else
 816                 RESET_FLAGS(admin_mib.ver_cfg_flags, DCBX_DCBX_ENABLED);
 817
 818         if (dp->overwrite_settings == BNX2X_DCBX_OVERWRITE_SETTINGS_ENABLE) {
 819
 820                 RESET_FLAGS(admin_mib.ver_cfg_flags, DCBX_CEE_VERSION_MASK);
 821                 admin_mib.ver_cfg_flags |=
 822                         (dp->admin_dcbx_version << DCBX_CEE_VERSION_SHIFT) &
 823                          DCBX_CEE_VERSION_MASK;
 824
 825                 af->ets.enabled = (u8)dp->admin_ets_enable;
 826
 827                 af->pfc.enabled = (u8)dp->admin_pfc_enable;
 828
 829                 /* FOR IEEE dp->admin_tc_supported_tx_enable */
 830                 if (dp->admin_ets_configuration_tx_enable)
 831                         SET_FLAGS(admin_mib.ver_cfg_flags,
 832                                   DCBX_ETS_CONFIG_TX_ENABLED);
 833                 else
 834                         RESET_FLAGS(admin_mib.ver_cfg_flags,
 835                                     DCBX_ETS_CONFIG_TX_ENABLED);
 836                 /* For IEEE admin_ets_recommendation_tx_enable */
 837                 if (dp->admin_pfc_tx_enable)
 838                         SET_FLAGS(admin_mib.ver_cfg_flags,
 839                                   DCBX_PFC_CONFIG_TX_ENABLED);
 840                 else
 841                         RESET_FLAGS(admin_mib.ver_cfg_flags,
 842                                   DCBX_PFC_CONFIG_TX_ENABLED);
 843
 844                 if (dp->admin_application_priority_tx_enable)
 845                         SET_FLAGS(admin_mib.ver_cfg_flags,
 846                                   DCBX_APP_CONFIG_TX_ENABLED);
 847                 else
 848                         RESET_FLAGS(admin_mib.ver_cfg_flags,
 849                                   DCBX_APP_CONFIG_TX_ENABLED);
 850
 851                 if (dp->admin_ets_willing)
 852                         SET_FLAGS(admin_mib.ver_cfg_flags, DCBX_ETS_WILLING);
 853                 else
 854                         RESET_FLAGS(admin_mib.ver_cfg_flags, DCBX_ETS_WILLING);
 855                 /* For IEEE admin_ets_reco_valid */
 856                 if (dp->admin_pfc_willing)
 857                         SET_FLAGS(admin_mib.ver_cfg_flags, DCBX_PFC_WILLING);
 858                 else
 859                         RESET_FLAGS(admin_mib.ver_cfg_flags, DCBX_PFC_WILLING);
 860
 861                 if (dp->admin_app_priority_willing)
 862                         SET_FLAGS(admin_mib.ver_cfg_flags, DCBX_APP_WILLING);
 863                 else
 864                         RESET_FLAGS(admin_mib.ver_cfg_flags, DCBX_APP_WILLING);
 865
 866                 for (i = 0 ; i < DCBX_MAX_NUM_PG_BW_ENTRIES; i++) {
 867                         DCBX_PG_BW_SET(af->ets.pg_bw_tbl, i,
 868                                 (u8)dp->admin_configuration_bw_precentage[i]);
 869
 870                         DP(BNX2X_MSG_DCB, "pg_bw_tbl[%d] = %02x\n",
 871                            i, DCBX_PG_BW_GET(af->ets.pg_bw_tbl, i));
 872                 }
 873
 874                 for (i = 0; i < DCBX_MAX_NUM_PRI_PG_ENTRIES; i++) {
 875                         DCBX_PRI_PG_SET(af->ets.pri_pg_tbl, i,
 876                                         (u8)dp->admin_configuration_ets_pg[i]);
 877
 878                         DP(BNX2X_MSG_DCB, "pri_pg_tbl[%d] = %02x\n",
 879                            i, DCBX_PRI_PG_GET(af->ets.pri_pg_tbl, i));
 880                 }
 881
 882                 /*For IEEE admin_recommendation_bw_percentage
 883                  *For IEEE admin_recommendation_ets_pg */
 884                 af->pfc.pri_en_bitmap = (u8)dp->admin_pfc_bitmap;
 885                 for (i = 0; i < DCBX_CONFIG_MAX_APP_PROTOCOL; i++) {
 886                         if (dp->admin_priority_app_table[i].valid) {
 887                                 struct bnx2x_admin_priority_app_table *table =
 888                                         dp->admin_priority_app_table;
 889                                 if ((ETH_TYPE_FCOE == table[i].app_id) &&
 890                                    (TRAFFIC_TYPE_ETH == table[i].traffic_type))
 891                                         traf_type = FCOE_APP_IDX;
 892                                 else if ((TCP_PORT_ISCSI == table[i].app_id) &&
 893                                    (TRAFFIC_TYPE_PORT == table[i].traffic_type))
 894                                         traf_type = ISCSI_APP_IDX;
 895                                 else
 896                                         traf_type = other_traf_type++;
 897
 898                                 af->app.app_pri_tbl[traf_type].app_id =
 899                                         table[i].app_id;
 900
 901                                 af->app.app_pri_tbl[traf_type].pri_bitmap =
 902                                         (u8)(1 << table[i].priority);
 903
 904                                 af->app.app_pri_tbl[traf_type].appBitfield =
 905                                     (DCBX_APP_ENTRY_VALID);
 906
 907                                 af->app.app_pri_tbl[traf_type].appBitfield |=
 908                                    (TRAFFIC_TYPE_ETH == table[i].traffic_type) ?
 909                                         DCBX_APP_SF_ETH_TYPE : DCBX_APP_SF_PORT;
 910                         }
 911                 }
 912
 913                 af->app.default_pri = (u8)dp->admin_default_priority;
 914         }
 915
 916         /* Write the data. */
 917         bnx2x_write_data(bp, (u32 *)&admin_mib, offset,
 918                          sizeof(struct lldp_admin_mib));
 919 }
 920
 921 void bnx2x_dcbx_set_state(struct bnx2x *bp, bool dcb_on, u32 dcbx_enabled)
 922 {
 923         if (!CHIP_IS_E1x(bp)) {
 924                 bp->dcb_state = dcb_on;
 925                 bp->dcbx_enabled = dcbx_enabled;
 926         } else {
 927                 bp->dcb_state = false;
 928                 bp->dcbx_enabled = BNX2X_DCBX_ENABLED_INVALID;
 929         }
 930         DP(BNX2X_MSG_DCB, "DCB state [%s:%s]\n",
 931            dcb_on ? "ON" : "OFF",
 932            dcbx_enabled == BNX2X_DCBX_ENABLED_OFF ? "user-mode" :
 933            dcbx_enabled == BNX2X_DCBX_ENABLED_ON_NEG_OFF ? "on-chip static" :
 934            dcbx_enabled == BNX2X_DCBX_ENABLED_ON_NEG_ON ?
 935            "on-chip with negotiation" : "invalid");
 936 }
 937
 938 void bnx2x_dcbx_init_params(struct bnx2x *bp)
 939 {
 940         bp->dcbx_config_params.admin_dcbx_version = 0x0; /* 0 - CEE; 1 - IEEE */
 941         bp->dcbx_config_params.admin_ets_willing = 1;
 942         bp->dcbx_config_params.admin_pfc_willing = 1;
 943         bp->dcbx_config_params.overwrite_settings = 1;
 944         bp->dcbx_config_params.admin_ets_enable = 1;
 945         bp->dcbx_config_params.admin_pfc_enable = 1;
 946         bp->dcbx_config_params.admin_tc_supported_tx_enable = 1;
 947         bp->dcbx_config_params.admin_ets_configuration_tx_enable = 1;
 948         bp->dcbx_config_params.admin_pfc_tx_enable = 1;
 949         bp->dcbx_config_params.admin_application_priority_tx_enable = 1;
 950         bp->dcbx_config_params.admin_ets_reco_valid = 1;
 951         bp->dcbx_config_params.admin_app_priority_willing = 1;
 952         bp->dcbx_config_params.admin_configuration_bw_precentage[0] = 100;
 953         bp->dcbx_config_params.admin_configuration_bw_precentage[1] = 0;
 954         bp->dcbx_config_params.admin_configuration_bw_precentage[2] = 0;
 955         bp->dcbx_config_params.admin_configuration_bw_precentage[3] = 0;
 956         bp->dcbx_config_params.admin_configuration_bw_precentage[4] = 0;
 957         bp->dcbx_config_params.admin_configuration_bw_precentage[5] = 0;
 958         bp->dcbx_config_params.admin_configuration_bw_precentage[6] = 0;
 959         bp->dcbx_config_params.admin_configuration_bw_precentage[7] = 0;
 960         bp->dcbx_config_params.admin_configuration_ets_pg[0] = 0;
 961         bp->dcbx_config_params.admin_configuration_ets_pg[1] = 0;
 962         bp->dcbx_config_params.admin_configuration_ets_pg[2] = 0;
 963         bp->dcbx_config_params.admin_configuration_ets_pg[3] = 0;
 964         bp->dcbx_config_params.admin_configuration_ets_pg[4] = 0;
 965         bp->dcbx_config_params.admin_configuration_ets_pg[5] = 0;
 966         bp->dcbx_config_params.admin_configuration_ets_pg[6] = 0;
 967         bp->dcbx_config_params.admin_configuration_ets_pg[7] = 0;
 968         bp->dcbx_config_params.admin_recommendation_bw_precentage[0] = 100;
 969         bp->dcbx_config_params.admin_recommendation_bw_precentage[1] = 0;
 970         bp->dcbx_config_params.admin_recommendation_bw_precentage[2] = 0;
 971         bp->dcbx_config_params.admin_recommendation_bw_precentage[3] = 0;
 972         bp->dcbx_config_params.admin_recommendation_bw_precentage[4] = 0;
 973         bp->dcbx_config_params.admin_recommendation_bw_precentage[5] = 0;
 974         bp->dcbx_config_params.admin_recommendation_bw_precentage[6] = 0;
 975         bp->dcbx_config_params.admin_recommendation_bw_precentage[7] = 0;
 976         bp->dcbx_config_params.admin_recommendation_ets_pg[0] = 0;
 977         bp->dcbx_config_params.admin_recommendation_ets_pg[1] = 1;
 978         bp->dcbx_config_params.admin_recommendation_ets_pg[2] = 2;
 979         bp->dcbx_config_params.admin_recommendation_ets_pg[3] = 3;
 980         bp->dcbx_config_params.admin_recommendation_ets_pg[4] = 4;
 981         bp->dcbx_config_params.admin_recommendation_ets_pg[5] = 5;
 982         bp->dcbx_config_params.admin_recommendation_ets_pg[6] = 6;
 983         bp->dcbx_config_params.admin_recommendation_ets_pg[7] = 7;
 984         bp->dcbx_config_params.admin_pfc_bitmap = 0x0;
 985         bp->dcbx_config_params.admin_priority_app_table[0].valid = 0;
 986         bp->dcbx_config_params.admin_priority_app_table[1].valid = 0;
 987         bp->dcbx_config_params.admin_priority_app_table[2].valid = 0;
 988         bp->dcbx_config_params.admin_priority_app_table[3].valid = 0;
 989         bp->dcbx_config_params.admin_default_priority = 0;
 990 }
 991
 992 void bnx2x_dcbx_init(struct bnx2x *bp, bool update_shmem)
 993 {
 994         u32 dcbx_lldp_params_offset = SHMEM_LLDP_DCBX_PARAMS_NONE;
 995
 996         /* only PMF can send ADMIN msg to MFW in old MFW versions */
 997         if ((!bp->port.pmf) && (!(bp->flags & BC_SUPPORTS_DCBX_MSG_NON_PMF)))
 998                 return;
 999
1000         if (bp->dcbx_enabled <= 0)
1001                 return;
1002
1003         /* validate:
1004          * chip of good for dcbx version,
1005          * dcb is wanted
1006          * shmem2 contains DCBX support fields
1007          */
1008         DP(BNX2X_MSG_DCB, "dcb_state %d bp->port.pmf %d\n",
1009            bp->dcb_state, bp->port.pmf);
1010
1011         if (bp->dcb_state == BNX2X_DCB_STATE_ON &&
1012             SHMEM2_HAS(bp, dcbx_lldp_params_offset)) {
1013                 dcbx_lldp_params_offset =
1014                         SHMEM2_RD(bp, dcbx_lldp_params_offset);
1015
1016                 DP(BNX2X_MSG_DCB, "dcbx_lldp_params_offset 0x%x\n",
1017                    dcbx_lldp_params_offset);
1018
1019                 bnx2x_update_drv_flags(bp, 1 << DRV_FLAGS_DCB_CONFIGURED, 0);
1020
1021                 if (SHMEM_LLDP_DCBX_PARAMS_NONE != dcbx_lldp_params_offset) {
1022                         /* need HW lock to avoid scenario of two drivers
1023                          * writing in parallel to shmem
1024                          */
1025                         bnx2x_acquire_hw_lock(bp,
1026                                               HW_LOCK_RESOURCE_DCBX_ADMIN_MIB);
1027                         if (update_shmem)
1028                                 bnx2x_dcbx_admin_mib_updated_params(bp,
1029                                         dcbx_lldp_params_offset);
1030
1031                         /* Let HW start negotiation */
1032                         bnx2x_fw_command(bp,
1033                                          DRV_MSG_CODE_DCBX_ADMIN_PMF_MSG, 0);
1034                         /* release HW lock only after MFW acks that it finished
1035                          * reading values from shmem
1036                          */
1037                         bnx2x_release_hw_lock(bp,
1038                                               HW_LOCK_RESOURCE_DCBX_ADMIN_MIB);
1039                 }
1040         }
1041 }
1042 static void
1043 bnx2x_dcbx_print_cos_params(struct bnx2x *bp,
1044                             struct bnx2x_func_tx_start_params *pfc_fw_cfg)
1045 {
1046         u8 pri = 0;
1047         u8 cos = 0;
1048
1049         DP(BNX2X_MSG_DCB,
1050            "pfc_fw_cfg->dcb_version %x\n", pfc_fw_cfg->dcb_version);
1051         DP(BNX2X_MSG_DCB,
1052            "pdev->params.dcbx_port_params.pfc.priority_non_pauseable_mask %x\n",
1053            bp->dcbx_port_params.pfc.priority_non_pauseable_mask);
1054
1055         for (cos = 0 ; cos < bp->dcbx_port_params.ets.num_of_cos ; cos++) {
1056                 DP(BNX2X_MSG_DCB,
1057                    "pdev->params.dcbx_port_params.ets.cos_params[%d].pri_bitmask %x\n",
1058                    cos, bp->dcbx_port_params.ets.cos_params[cos].pri_bitmask);
1059
1060                 DP(BNX2X_MSG_DCB,
1061                    "pdev->params.dcbx_port_params.ets.cos_params[%d].bw_tbl %x\n",
1062                    cos, bp->dcbx_port_params.ets.cos_params[cos].bw_tbl);
1063
1064                 DP(BNX2X_MSG_DCB,
1065                    "pdev->params.dcbx_port_params.ets.cos_params[%d].strict %x\n",
1066                    cos, bp->dcbx_port_params.ets.cos_params[cos].strict);
1067
1068                 DP(BNX2X_MSG_DCB,
1069                    "pdev->params.dcbx_port_params.ets.cos_params[%d].pauseable %x\n",
1070                    cos, bp->dcbx_port_params.ets.cos_params[cos].pauseable);
1071         }
1072
1073         for (pri = 0; pri < LLFC_DRIVER_TRAFFIC_TYPE_MAX; pri++) {
1074                 DP(BNX2X_MSG_DCB,
1075                    "pfc_fw_cfg->traffic_type_to_priority_cos[%d].priority %x\n",
1076                    pri, pfc_fw_cfg->traffic_type_to_priority_cos[pri].priority);
1077
1078                 DP(BNX2X_MSG_DCB,
1079                    "pfc_fw_cfg->traffic_type_to_priority_cos[%d].cos %x\n",
1080                    pri, pfc_fw_cfg->traffic_type_to_priority_cos[pri].cos);
1081         }
1082 }
1083
1084 /* fills help_data according to pg_info */
1085 static void bnx2x_dcbx_get_num_pg_traf_type(struct bnx2x *bp,
1086                                             u32 *pg_pri_orginal_spread,
1087                                             struct pg_help_data *help_data)
1088 {
1089         bool pg_found  = false;
1090         u32 i, traf_type, add_traf_type, add_pg;
1091         u32 *ttp = bp->dcbx_port_params.app.traffic_type_priority;
1092         struct pg_entry_help_data *data = help_data->data; /*shortcut*/
1093
1094         /* Set to invalid */
1095         for (i = 0; i < LLFC_DRIVER_TRAFFIC_TYPE_MAX; i++)
1096                 data[i].pg = DCBX_ILLEGAL_PG;
1097
1098         for (add_traf_type = 0;
1099              add_traf_type < LLFC_DRIVER_TRAFFIC_TYPE_MAX; add_traf_type++) {
1100                 pg_found = false;
1101                 if (ttp[add_traf_type] < MAX_PFC_PRIORITIES) {
1102                         add_pg = (u8)pg_pri_orginal_spread[ttp[add_traf_type]];
1103                         for (traf_type = 0;
1104                              traf_type < LLFC_DRIVER_TRAFFIC_TYPE_MAX;
1105                              traf_type++) {
1106                                 if (data[traf_type].pg == add_pg) {
1107                                         if (!(data[traf_type].pg_priority &
1108                                              (1 << ttp[add_traf_type])))
1109                                                 data[traf_type].
1110                                                         num_of_dif_pri++;
1111                                         data[traf_type].pg_priority |=
1112                                                 (1 << ttp[add_traf_type]);
1113                                         pg_found = true;
1114                                         break;
1115                                 }
1116                         }
1117                         if (false == pg_found) {
1118                                 data[help_data->num_of_pg].pg = add_pg;
1119                                 data[help_data->num_of_pg].pg_priority =
1120                                                 (1 << ttp[add_traf_type]);
1121                                 data[help_data->num_of_pg].num_of_dif_pri = 1;
1122                                 help_data->num_of_pg++;
1123                         }
1124                 }
1125                 DP(BNX2X_MSG_DCB,
1126                    "add_traf_type %d pg_found %s num_of_pg %d\n",
1127                    add_traf_type, (false == pg_found) ? "NO" : "YES",
1128                    help_data->num_of_pg);
1129         }
1130 }
1131
1132 static void bnx2x_dcbx_ets_disabled_entry_data(struct bnx2x *bp,
1133                                                struct cos_help_data *cos_data,
1134                                                u32 pri_join_mask)
1135 {
1136         /* Only one priority than only one COS */
1137         cos_data->data[0].pausable =
1138                 IS_DCBX_PFC_PRI_ONLY_PAUSE(bp, pri_join_mask);
1139         cos_data->data[0].pri_join_mask = pri_join_mask;
1140         cos_data->data[0].cos_bw = 100;
1141         cos_data->num_of_cos = 1;
1142 }
1143
1144 static inline void bnx2x_dcbx_add_to_cos_bw(struct bnx2x *bp,
1145                                             struct cos_entry_help_data *data,
1146                                             u8 pg_bw)
1147 {
1148         if (data->cos_bw == DCBX_INVALID_COS_BW)
1149                 data->cos_bw = pg_bw;
1150         else
1151                 data->cos_bw += pg_bw;
1152 }
1153
1154 static void bnx2x_dcbx_separate_pauseable_from_non(struct bnx2x *bp,
1155                         struct cos_help_data *cos_data,
1156                         u32 *pg_pri_orginal_spread,
1157                         struct dcbx_ets_feature *ets)
1158 {
1159         u32     pri_tested      = 0;
1160         u8      i               = 0;
1161         u8      entry           = 0;
1162         u8      pg_entry        = 0;
1163         u8      num_of_pri      = LLFC_DRIVER_TRAFFIC_TYPE_MAX;
1164
1165         cos_data->data[0].pausable = true;
1166         cos_data->data[1].pausable = false;
1167         cos_data->data[0].pri_join_mask = cos_data->data[1].pri_join_mask = 0;
1168
1169         for (i = 0 ; i < num_of_pri ; i++) {
1170                 pri_tested = 1 << bp->dcbx_port_params.
1171                                         app.traffic_type_priority[i];
1172
1173                 if (pri_tested & DCBX_PFC_PRI_NON_PAUSE_MASK(bp)) {
1174                         cos_data->data[1].pri_join_mask |= pri_tested;
1175                         entry = 1;
1176                 } else {
1177                         cos_data->data[0].pri_join_mask |= pri_tested;
1178                         entry = 0;
1179                 }
1180                 pg_entry = (u8)pg_pri_orginal_spread[bp->dcbx_port_params.
1181                                                 app.traffic_type_priority[i]];
1182                 /* There can be only one strict pg */
1183                 if (pg_entry < DCBX_MAX_NUM_PG_BW_ENTRIES)
1184                         bnx2x_dcbx_add_to_cos_bw(bp, &cos_data->data[entry],
1185                                 DCBX_PG_BW_GET(ets->pg_bw_tbl, pg_entry));
1186                 else
1187                         /* If we join a group and one is strict
1188                          * than the bw rules
1189                          */
1190                         cos_data->data[entry].strict =
1191                                                 BNX2X_DCBX_STRICT_COS_HIGHEST;
1192         }
1193         if ((0 == cos_data->data[0].pri_join_mask) &&
1194             (0 == cos_data->data[1].pri_join_mask))
1195                 BNX2X_ERR("dcbx error: Both groups must have priorities\n");
1196 }
1197
1198 #ifndef POWER_OF_2
1199 #define POWER_OF_2(x)   ((0 != x) && (0 == (x & (x-1))))
1200 #endif
1201
1202 static void bnx2x_dcbx_2cos_limit_cee_single_pg_to_cos_params(struct bnx2x *bp,
1203                                               struct pg_help_data *pg_help_data,
1204                                               struct cos_help_data *cos_data,
1205                                               u32 pri_join_mask,
1206                                               u8 num_of_dif_pri)
1207 {
1208         u8 i = 0;
1209         u32 pri_tested = 0;
1210         u32 pri_mask_without_pri = 0;
1211         u32 *ttp = bp->dcbx_port_params.app.traffic_type_priority;
1212         /*debug*/
1213         if (num_of_dif_pri == 1) {
1214                 bnx2x_dcbx_ets_disabled_entry_data(bp, cos_data, pri_join_mask);
1215                 return;
1216         }
1217         /* single priority group */
1218         if (pg_help_data->data[0].pg < DCBX_MAX_NUM_PG_BW_ENTRIES) {
1219                 /* If there are both pauseable and non-pauseable priorities,
1220                  * the pauseable priorities go to the first queue and
1221                  * the non-pauseable priorities go to the second queue.
1222                  */
1223                 if (IS_DCBX_PFC_PRI_MIX_PAUSE(bp, pri_join_mask)) {
1224                         /* Pauseable */
1225                         cos_data->data[0].pausable = true;
1226                         /* Non pauseable.*/
1227                         cos_data->data[1].pausable = false;
1228
1229                         if (2 == num_of_dif_pri) {
1230                                 cos_data->data[0].cos_bw = 50;
1231                                 cos_data->data[1].cos_bw = 50;
1232                         }
1233
1234                         if (3 == num_of_dif_pri) {
1235                                 if (POWER_OF_2(DCBX_PFC_PRI_GET_PAUSE(bp,
1236                                                         pri_join_mask))) {
1237                                         cos_data->data[0].cos_bw = 33;
1238                                         cos_data->data[1].cos_bw = 67;
1239                                 } else {
1240                                         cos_data->data[0].cos_bw = 67;
1241                                         cos_data->data[1].cos_bw = 33;
1242                                 }
1243                         }
1244
1245                 } else if (IS_DCBX_PFC_PRI_ONLY_PAUSE(bp, pri_join_mask)) {
1246                         /* If there are only pauseable priorities,
1247                          * then one/two priorities go to the first queue
1248                          * and one priority goes to the second queue.
1249                          */
1250                         if (2 == num_of_dif_pri) {
1251                                 cos_data->data[0].cos_bw = 50;
1252                                 cos_data->data[1].cos_bw = 50;
1253                         } else {
1254                                 cos_data->data[0].cos_bw = 67;
1255                                 cos_data->data[1].cos_bw = 33;
1256                         }
1257                         cos_data->data[1].pausable = true;
1258                         cos_data->data[0].pausable = true;
1259                         /* All priorities except FCOE */
1260                         cos_data->data[0].pri_join_mask = (pri_join_mask &
1261                                 ((u8)~(1 << ttp[LLFC_TRAFFIC_TYPE_FCOE])));
1262                         /* Only FCOE priority.*/
1263                         cos_data->data[1].pri_join_mask =
1264                                 (1 << ttp[LLFC_TRAFFIC_TYPE_FCOE]);
1265                 } else
1266                         /* If there are only non-pauseable priorities,
1267                          * they will all go to the same queue.
1268                          */
1269                         bnx2x_dcbx_ets_disabled_entry_data(bp,
1270                                                 cos_data, pri_join_mask);
1271         } else {
1272                 /* priority group which is not BW limited (PG#15):*/
1273                 if (IS_DCBX_PFC_PRI_MIX_PAUSE(bp, pri_join_mask)) {
1274                         /* If there are both pauseable and non-pauseable
1275                          * priorities, the pauseable priorities go to the first
1276                          * queue and the non-pauseable priorities
1277                          * go to the second queue.
1278                          */
1279                         if (DCBX_PFC_PRI_GET_PAUSE(bp, pri_join_mask) >
1280                             DCBX_PFC_PRI_GET_NON_PAUSE(bp, pri_join_mask)) {
1281                                 cos_data->data[0].strict =
1282                                         BNX2X_DCBX_STRICT_COS_HIGHEST;
1283                                 cos_data->data[1].strict =
1284                                         BNX2X_DCBX_STRICT_COS_NEXT_LOWER_PRI(
1285                                                 BNX2X_DCBX_STRICT_COS_HIGHEST);
1286                         } else {
1287                                 cos_data->data[0].strict =
1288                                         BNX2X_DCBX_STRICT_COS_NEXT_LOWER_PRI(
1289                                                 BNX2X_DCBX_STRICT_COS_HIGHEST);
1290                                 cos_data->data[1].strict =
1291                                         BNX2X_DCBX_STRICT_COS_HIGHEST;
1292                         }
1293                         /* Pauseable */
1294                         cos_data->data[0].pausable = true;
1295                         /* Non pause-able.*/
1296                         cos_data->data[1].pausable = false;
1297                 } else {
1298                         /* If there are only pauseable priorities or
1299                          * only non-pauseable,* the lower priorities go
1300                          * to the first queue and the higher priorities go
1301                          * to the second queue.
1302                          */
1303                         cos_data->data[0].pausable =
1304                                 cos_data->data[1].pausable =
1305                                 IS_DCBX_PFC_PRI_ONLY_PAUSE(bp, pri_join_mask);
1306
1307                         for (i = 0 ; i < LLFC_DRIVER_TRAFFIC_TYPE_MAX; i++) {
1308                                 pri_tested = 1 << bp->dcbx_port_params.
1309                                         app.traffic_type_priority[i];
1310                                 /* Remove priority tested */
1311                                 pri_mask_without_pri =
1312                                         (pri_join_mask & ((u8)(~pri_tested)));
1313                                 if (pri_mask_without_pri < pri_tested)
1314                                         break;
1315                         }
1316
1317                         if (i == LLFC_DRIVER_TRAFFIC_TYPE_MAX)
1318                                 BNX2X_ERR("Invalid value for pri_join_mask - could not find a priority\n");
1319
1320                         cos_data->data[0].pri_join_mask = pri_mask_without_pri;
1321                         cos_data->data[1].pri_join_mask = pri_tested;
1322                         /* Both queues are strict priority,
1323                          * and that with the highest priority
1324                          * gets the highest strict priority in the arbiter.
1325                          */
1326                         cos_data->data[0].strict =
1327                                         BNX2X_DCBX_STRICT_COS_NEXT_LOWER_PRI(
1328                                                 BNX2X_DCBX_STRICT_COS_HIGHEST);
1329                         cos_data->data[1].strict =
1330                                         BNX2X_DCBX_STRICT_COS_HIGHEST;
1331                 }
1332         }
1333 }
1334
1335 static void bnx2x_dcbx_2cos_limit_cee_two_pg_to_cos_params(
1336                             struct bnx2x                *bp,
1337                             struct  pg_help_data        *pg_help_data,
1338                             struct dcbx_ets_feature     *ets,
1339                             struct cos_help_data        *cos_data,
1340                             u32                 *pg_pri_orginal_spread,
1341                             u32                         pri_join_mask,
1342                             u8                          num_of_dif_pri)
1343 {
1344         u8 i = 0;
1345         u8 pg[DCBX_COS_MAX_NUM_E2] = { 0 };
1346
1347         /* If there are both pauseable and non-pauseable priorities,
1348          * the pauseable priorities go to the first queue and
1349          * the non-pauseable priorities go to the second queue.
1350          */
1351         if (IS_DCBX_PFC_PRI_MIX_PAUSE(bp, pri_join_mask)) {
1352                 if (IS_DCBX_PFC_PRI_MIX_PAUSE(bp,
1353                                          pg_help_data->data[0].pg_priority) ||
1354                     IS_DCBX_PFC_PRI_MIX_PAUSE(bp,
1355                                          pg_help_data->data[1].pg_priority)) {
1356                         /* If one PG contains both pauseable and
1357                          * non-pauseable priorities then ETS is disabled.
1358                          */
1359                         bnx2x_dcbx_separate_pauseable_from_non(bp, cos_data,
1360                                         pg_pri_orginal_spread, ets);
1361                         bp->dcbx_port_params.ets.enabled = false;
1362                         return;
1363                 }
1364
1365                 /* Pauseable */
1366                 cos_data->data[0].pausable = true;
1367                 /* Non pauseable. */
1368                 cos_data->data[1].pausable = false;
1369                 if (IS_DCBX_PFC_PRI_ONLY_PAUSE(bp,
1370                                 pg_help_data->data[0].pg_priority)) {
1371                         /* 0 is pauseable */
1372                         cos_data->data[0].pri_join_mask =
1373                                 pg_help_data->data[0].pg_priority;
1374                         pg[0] = pg_help_data->data[0].pg;
1375                         cos_data->data[1].pri_join_mask =
1376                                 pg_help_data->data[1].pg_priority;
1377                         pg[1] = pg_help_data->data[1].pg;
1378                 } else {/* 1 is pauseable */
1379                         cos_data->data[0].pri_join_mask =
1380                                 pg_help_data->data[1].pg_priority;
1381                         pg[0] = pg_help_data->data[1].pg;
1382                         cos_data->data[1].pri_join_mask =
1383                                 pg_help_data->data[0].pg_priority;
1384                         pg[1] = pg_help_data->data[0].pg;
1385                 }
1386         } else {
1387                 /* If there are only pauseable priorities or
1388                  * only non-pauseable, each PG goes to a queue.
1389                  */
1390                 cos_data->data[0].pausable = cos_data->data[1].pausable =
1391                         IS_DCBX_PFC_PRI_ONLY_PAUSE(bp, pri_join_mask);
1392                 cos_data->data[0].pri_join_mask =
1393                         pg_help_data->data[0].pg_priority;
1394                 pg[0] = pg_help_data->data[0].pg;
1395                 cos_data->data[1].pri_join_mask =
1396                         pg_help_data->data[1].pg_priority;
1397                 pg[1] = pg_help_data->data[1].pg;
1398         }
1399
1400         /* There can be only one strict pg */
1401         for (i = 0 ; i < ARRAY_SIZE(pg); i++) {
1402                 if (pg[i] < DCBX_MAX_NUM_PG_BW_ENTRIES)
1403                         cos_data->data[i].cos_bw =
1404                                 DCBX_PG_BW_GET(ets->pg_bw_tbl, pg[i]);
1405                 else
1406                         cos_data->data[i].strict =
1407                                                 BNX2X_DCBX_STRICT_COS_HIGHEST;
1408         }
1409 }
1410
1411 static int bnx2x_dcbx_join_pgs(
1412                               struct bnx2x            *bp,
1413                               struct dcbx_ets_feature *ets,
1414                               struct pg_help_data     *pg_help_data,
1415                               u8                      required_num_of_pg)
1416 {
1417         u8 entry_joined    = pg_help_data->num_of_pg - 1;
1418         u8 entry_removed   = entry_joined + 1;
1419         u8 pg_joined       = 0;
1420
1421         if (required_num_of_pg == 0 || ARRAY_SIZE(pg_help_data->data)
1422                                                 <= pg_help_data->num_of_pg) {
1423
1424                 BNX2X_ERR("required_num_of_pg can't be zero\n");
1425                 return -EINVAL;
1426         }
1427
1428         while (required_num_of_pg < pg_help_data->num_of_pg) {
1429                 entry_joined = pg_help_data->num_of_pg - 2;
1430                 entry_removed = entry_joined + 1;
1431                 /* protect index */
1432                 entry_removed %= ARRAY_SIZE(pg_help_data->data);
1433
1434                 pg_help_data->data[entry_joined].pg_priority |=
1435                         pg_help_data->data[entry_removed].pg_priority;
1436
1437                 pg_help_data->data[entry_joined].num_of_dif_pri +=
1438                         pg_help_data->data[entry_removed].num_of_dif_pri;
1439
1440                 if (pg_help_data->data[entry_joined].pg == DCBX_STRICT_PRI_PG ||
1441                     pg_help_data->data[entry_removed].pg == DCBX_STRICT_PRI_PG)
1442                         /* Entries joined strict priority rules */
1443                         pg_help_data->data[entry_joined].pg =
1444                                                         DCBX_STRICT_PRI_PG;
1445                 else {
1446                         /* Entries can be joined join BW */
1447                         pg_joined = DCBX_PG_BW_GET(ets->pg_bw_tbl,
1448                                         pg_help_data->data[entry_joined].pg) +
1449                                     DCBX_PG_BW_GET(ets->pg_bw_tbl,
1450                                         pg_help_data->data[entry_removed].pg);
1451
1452                         DCBX_PG_BW_SET(ets->pg_bw_tbl,
1453                                 pg_help_data->data[entry_joined].pg, pg_joined);
1454                 }
1455                 /* Joined the entries */
1456                 pg_help_data->num_of_pg--;
1457         }
1458
1459         return 0;
1460 }
1461
1462 static void bnx2x_dcbx_2cos_limit_cee_three_pg_to_cos_params(
1463                               struct bnx2x              *bp,
1464                               struct pg_help_data       *pg_help_data,
1465                               struct dcbx_ets_feature   *ets,
1466                               struct cos_help_data      *cos_data,
1467                               u32                       *pg_pri_orginal_spread,
1468                               u32                       pri_join_mask,
1469                               u8                        num_of_dif_pri)
1470 {
1471         u8 i = 0;
1472         u32 pri_tested = 0;
1473         u8 entry = 0;
1474         u8 pg_entry = 0;
1475         bool b_found_strict = false;
1476         u8 num_of_pri = LLFC_DRIVER_TRAFFIC_TYPE_MAX;
1477
1478         cos_data->data[0].pri_join_mask = cos_data->data[1].pri_join_mask = 0;
1479         /* If there are both pauseable and non-pauseable priorities,
1480          * the pauseable priorities go to the first queue and the
1481          * non-pauseable priorities go to the second queue.
1482          */
1483         if (IS_DCBX_PFC_PRI_MIX_PAUSE(bp, pri_join_mask))
1484                 bnx2x_dcbx_separate_pauseable_from_non(bp,
1485                                 cos_data, pg_pri_orginal_spread, ets);
1486         else {
1487                 /* If two BW-limited PG-s were combined to one queue,
1488                  * the BW is their sum.
1489                  *
1490                  * If there are only pauseable priorities or only non-pauseable,
1491                  * and there are both BW-limited and non-BW-limited PG-s,
1492                  * the BW-limited PG/s go to one queue and the non-BW-limited
1493                  * PG/s go to the second queue.
1494                  *
1495                  * If there are only pauseable priorities or only non-pauseable
1496                  * and all are BW limited, then two priorities go to the first
1497                  * queue and one priority goes to the second queue.
1498                  *
1499                  * We will join this two cases:
1500                  * if one is BW limited it will go to the second queue
1501                  * otherwise the last priority will get it
1502                  */
1503
1504                 cos_data->data[0].pausable = cos_data->data[1].pausable =
1505                         IS_DCBX_PFC_PRI_ONLY_PAUSE(bp, pri_join_mask);
1506
1507                 for (i = 0 ; i < num_of_pri; i++) {
1508                         pri_tested = 1 << bp->dcbx_port_params.
1509                                 app.traffic_type_priority[i];
1510                         pg_entry = (u8)pg_pri_orginal_spread[bp->
1511                                 dcbx_port_params.app.traffic_type_priority[i]];
1512
1513                         if (pg_entry < DCBX_MAX_NUM_PG_BW_ENTRIES) {
1514                                 entry = 0;
1515
1516                                 if (i == (num_of_pri-1) &&
1517                                     false == b_found_strict)
1518                                         /* last entry will be handled separately
1519                                          * If no priority is strict than last
1520                                          * entry goes to last queue.
1521                                          */
1522                                         entry = 1;
1523                                 cos_data->data[entry].pri_join_mask |=
1524                                                                 pri_tested;
1525                                 bnx2x_dcbx_add_to_cos_bw(bp,
1526                                         &cos_data->data[entry],
1527                                         DCBX_PG_BW_GET(ets->pg_bw_tbl,
1528                                                        pg_entry));
1529                         } else {
1530                                 b_found_strict = true;
1531                                 cos_data->data[1].pri_join_mask |= pri_tested;
1532                                 /* If we join a group and one is strict
1533                                  * than the bw rules
1534                                  */
1535                                 cos_data->data[1].strict =
1536                                         BNX2X_DCBX_STRICT_COS_HIGHEST;
1537                         }
1538                 }
1539         }
1540 }
1541
1542 static void bnx2x_dcbx_2cos_limit_cee_fill_cos_params(struct bnx2x *bp,
1543                                        struct pg_help_data *help_data,
1544                                        struct dcbx_ets_feature *ets,
1545                                        struct cos_help_data *cos_data,
1546                                        u32 *pg_pri_orginal_spread,
1547                                        u32 pri_join_mask,
1548                                        u8 num_of_dif_pri)
1549 {
1550         /* default E2 settings */
1551         cos_data->num_of_cos = DCBX_COS_MAX_NUM_E2;
1552
1553         switch (help_data->num_of_pg) {
1554         case 1:
1555                 bnx2x_dcbx_2cos_limit_cee_single_pg_to_cos_params(
1556                                                bp,
1557                                                help_data,
1558                                                cos_data,
1559                                                pri_join_mask,
1560                                                num_of_dif_pri);
1561                 break;
1562         case 2:
1563                 bnx2x_dcbx_2cos_limit_cee_two_pg_to_cos_params(
1564                                             bp,
1565                                             help_data,
1566                                             ets,
1567                                             cos_data,
1568                                             pg_pri_orginal_spread,
1569                                             pri_join_mask,
1570                                             num_of_dif_pri);
1571                 break;
1572
1573         case 3:
1574                 bnx2x_dcbx_2cos_limit_cee_three_pg_to_cos_params(
1575                                               bp,
1576                                               help_data,
1577                                               ets,
1578                                               cos_data,
1579                                               pg_pri_orginal_spread,
1580                                               pri_join_mask,
1581                                               num_of_dif_pri);
1582                 break;
1583         default:
1584                 BNX2X_ERR("Wrong pg_help_data.num_of_pg\n");
1585                 bnx2x_dcbx_ets_disabled_entry_data(bp,
1586                                                    cos_data, pri_join_mask);
1587         }
1588 }
1589
1590 static int bnx2x_dcbx_spread_strict_pri(struct bnx2x *bp,
1591                                         struct cos_help_data *cos_data,
1592                                         u8 entry,
1593                                         u8 num_spread_of_entries,
1594                                         u8 strict_app_pris)
1595 {
1596         u8 strict_pri = BNX2X_DCBX_STRICT_COS_HIGHEST;
1597         u8 num_of_app_pri = MAX_PFC_PRIORITIES;
1598         u8 app_pri_bit = 0;
1599
1600         while (num_spread_of_entries && num_of_app_pri > 0) {
1601                 app_pri_bit = 1 << (num_of_app_pri - 1);
1602                 if (app_pri_bit & strict_app_pris) {
1603                         struct cos_entry_help_data *data = &cos_data->
1604                                                                 data[entry];
1605                         num_spread_of_entries--;
1606                         if (num_spread_of_entries == 0) {
1607                                 /* last entry needed put all the entries left */
1608                                 data->cos_bw = DCBX_INVALID_COS_BW;
1609                                 data->strict = strict_pri;
1610                                 data->pri_join_mask = strict_app_pris;
1611                                 data->pausable = DCBX_IS_PFC_PRI_SOME_PAUSE(bp,
1612                                                         data->pri_join_mask);
1613                         } else {
1614                                 strict_app_pris &= ~app_pri_bit;
1615
1616                                 data->cos_bw = DCBX_INVALID_COS_BW;
1617                                 data->strict = strict_pri;
1618                                 data->pri_join_mask = app_pri_bit;
1619                                 data->pausable = DCBX_IS_PFC_PRI_SOME_PAUSE(bp,
1620                                                         data->pri_join_mask);
1621                         }
1622
1623                         strict_pri =
1624                             BNX2X_DCBX_STRICT_COS_NEXT_LOWER_PRI(strict_pri);
1625                         entry++;
1626                 }
1627
1628                 num_of_app_pri--;
1629         }
1630
1631         if (num_spread_of_entries) {
1632                 BNX2X_ERR("Didn't succeed to spread strict priorities\n");
1633                 return -EINVAL;
1634         }
1635
1636         return 0;
1637 }
1638
1639 static u8 bnx2x_dcbx_cee_fill_strict_pri(struct bnx2x *bp,
1640                                          struct cos_help_data *cos_data,
1641                                          u8 entry,
1642                                          u8 num_spread_of_entries,
1643                                          u8 strict_app_pris)
1644 {
1645         if (bnx2x_dcbx_spread_strict_pri(bp, cos_data, entry,
1646                                          num_spread_of_entries,
1647                                          strict_app_pris)) {
1648                 struct cos_entry_help_data *data = &cos_data->
1649                                                     data[entry];
1650                 /* Fill BW entry */
1651                 data->cos_bw = DCBX_INVALID_COS_BW;
1652                 data->strict = BNX2X_DCBX_STRICT_COS_HIGHEST;
1653                 data->pri_join_mask = strict_app_pris;
1654                 data->pausable = DCBX_IS_PFC_PRI_SOME_PAUSE(bp,
1655                                  data->pri_join_mask);
1656                 return 1;
1657         }
1658
1659         return num_spread_of_entries;
1660 }
1661
1662 static void bnx2x_dcbx_cee_fill_cos_params(struct bnx2x *bp,
1663                                            struct pg_help_data *help_data,
1664                                            struct dcbx_ets_feature *ets,
1665                                            struct cos_help_data *cos_data,
1666                                            u32 pri_join_mask)
1667
1668 {
1669         u8 need_num_of_entries = 0;
1670         u8 i = 0;
1671         u8 entry = 0;
1672
1673         /*
1674          * if the number of requested PG-s in CEE is greater than 3
1675          * then the results are not determined since this is a violation
1676          * of the standard.
1677          */
1678         if (help_data->num_of_pg > DCBX_COS_MAX_NUM_E3B0) {
1679                 if (bnx2x_dcbx_join_pgs(bp, ets, help_data,
1680                                         DCBX_COS_MAX_NUM_E3B0)) {
1681                         BNX2X_ERR("Unable to reduce the number of PGs - we will disables ETS\n");
1682                         bnx2x_dcbx_ets_disabled_entry_data(bp, cos_data,
1683                                                            pri_join_mask);
1684                         return;
1685                 }
1686         }
1687
1688         for (i = 0 ; i < help_data->num_of_pg; i++) {
1689                 struct pg_entry_help_data *pg =  &help_data->data[i];
1690                 if (pg->pg < DCBX_MAX_NUM_PG_BW_ENTRIES) {
1691                         struct cos_entry_help_data *data = &cos_data->
1692                                                             data[entry];
1693                         /* Fill BW entry */
1694                         data->cos_bw = DCBX_PG_BW_GET(ets->pg_bw_tbl, pg->pg);
1695                         data->strict = BNX2X_DCBX_STRICT_INVALID;
1696                         data->pri_join_mask = pg->pg_priority;
1697                         data->pausable = DCBX_IS_PFC_PRI_SOME_PAUSE(bp,
1698                                                 data->pri_join_mask);
1699
1700                         entry++;
1701                 } else {
1702                         need_num_of_entries =  min_t(u8,
1703                                 (u8)pg->num_of_dif_pri,
1704                                 (u8)DCBX_COS_MAX_NUM_E3B0 -
1705                                                  help_data->num_of_pg + 1);
1706                         /*
1707                          * If there are still VOQ-s which have no associated PG,
1708                          * then associate these VOQ-s to PG15. These PG-s will
1709                          * be used for SP between priorities on PG15.
1710                          */
1711                         entry += bnx2x_dcbx_cee_fill_strict_pri(bp, cos_data,
1712                                 entry, need_num_of_entries, pg->pg_priority);
1713                 }
1714         }
1715
1716         /* the entry will represent the number of COSes used */
1717         cos_data->num_of_cos = entry;
1718 }
1719 static void bnx2x_dcbx_fill_cos_params(struct bnx2x *bp,
1720                                        struct pg_help_data *help_data,
1721                                        struct dcbx_ets_feature *ets,
1722                                        u32 *pg_pri_orginal_spread)
1723 {
1724         struct cos_help_data         cos_data;
1725         u8                    i                           = 0;
1726         u32                   pri_join_mask               = 0;
1727         u8                    num_of_dif_pri              = 0;
1728
1729         memset(&cos_data, 0, sizeof(cos_data));
1730
1731         /* Validate the pg value */
1732         for (i = 0; i < help_data->num_of_pg ; i++) {
1733                 if (DCBX_STRICT_PRIORITY != help_data->data[i].pg &&
1734                     DCBX_MAX_NUM_PG_BW_ENTRIES <= help_data->data[i].pg)
1735                         BNX2X_ERR("Invalid pg[%d] data %x\n", i,
1736                                   help_data->data[i].pg);
1737                 pri_join_mask   |=  help_data->data[i].pg_priority;
1738                 num_of_dif_pri  += help_data->data[i].num_of_dif_pri;
1739         }
1740
1741         /* defaults */
1742         cos_data.num_of_cos = 1;
1743         for (i = 0; i < ARRAY_SIZE(cos_data.data); i++) {
1744                 cos_data.data[i].pri_join_mask = 0;
1745                 cos_data.data[i].pausable = false;
1746                 cos_data.data[i].strict = BNX2X_DCBX_STRICT_INVALID;
1747                 cos_data.data[i].cos_bw = DCBX_INVALID_COS_BW;
1748         }
1749
1750         if (CHIP_IS_E3B0(bp))
1751                 bnx2x_dcbx_cee_fill_cos_params(bp, help_data, ets,
1752                                                &cos_data, pri_join_mask);
1753         else /* E2 + E3A0 */
1754                 bnx2x_dcbx_2cos_limit_cee_fill_cos_params(bp,
1755                                                           help_data, ets,
1756                                                           &cos_data,
1757                                                           pg_pri_orginal_spread,
1758                                                           pri_join_mask,
1759                                                           num_of_dif_pri);
1760
1761         for (i = 0; i < cos_data.num_of_cos ; i++) {
1762                 struct bnx2x_dcbx_cos_params *p =
1763                         &bp->dcbx_port_params.ets.cos_params[i];
1764
1765                 p->strict = cos_data.data[i].strict;
1766                 p->bw_tbl = cos_data.data[i].cos_bw;
1767                 p->pri_bitmask = cos_data.data[i].pri_join_mask;
1768                 p->pauseable = cos_data.data[i].pausable;
1769
1770                 /* sanity */
1771                 if (p->bw_tbl != DCBX_INVALID_COS_BW ||
1772                     p->strict != BNX2X_DCBX_STRICT_INVALID) {
1773                         if (p->pri_bitmask == 0)
1774                                 BNX2X_ERR("Invalid pri_bitmask for %d\n", i);
1775
1776                         if (CHIP_IS_E2(bp) || CHIP_IS_E3A0(bp)) {
1777
1778                                 if (p->pauseable &&
1779                                     DCBX_PFC_PRI_GET_NON_PAUSE(bp,
1780                                                 p->pri_bitmask) != 0)
1781                                         BNX2X_ERR("Inconsistent config for pausable COS %d\n",
1782                                                   i);
1783
1784                                 if (!p->pauseable &&
1785                                     DCBX_PFC_PRI_GET_PAUSE(bp,
1786                                                 p->pri_bitmask) != 0)
1787                                         BNX2X_ERR("Inconsistent config for nonpausable COS %d\n",
1788                                                   i);
1789                         }
1790                 }
1791
1792                 if (p->pauseable)
1793                         DP(BNX2X_MSG_DCB, "COS %d PAUSABLE prijoinmask 0x%x\n",
1794                                   i, cos_data.data[i].pri_join_mask);
1795                 else
1796                         DP(BNX2X_MSG_DCB,
1797                            "COS %d NONPAUSABLE prijoinmask 0x%x\n",
1798                            i, cos_data.data[i].pri_join_mask);
1799         }
1800
1801         bp->dcbx_port_params.ets.num_of_cos = cos_data.num_of_cos ;
1802 }
1803
1804 static void bnx2x_dcbx_get_ets_pri_pg_tbl(struct bnx2x *bp,
1805                                 u32 *set_configuration_ets_pg,
1806                                 u32 *pri_pg_tbl)
1807 {
1808         int i;
1809
1810         for (i = 0; i < DCBX_MAX_NUM_PRI_PG_ENTRIES; i++) {
1811                 set_configuration_ets_pg[i] = DCBX_PRI_PG_GET(pri_pg_tbl, i);
1812
1813                 DP(BNX2X_MSG_DCB, "set_configuration_ets_pg[%d] = 0x%x\n",
1814                    i, set_configuration_ets_pg[i]);
1815         }
1816 }
1817
1818 static void bnx2x_dcbx_fw_struct(struct bnx2x *bp,
1819                                  struct bnx2x_func_tx_start_params *pfc_fw_cfg)
1820 {
1821         u16 pri_bit = 0;
1822         u8 cos = 0, pri = 0;
1823         struct priority_cos *tt2cos;
1824         u32 *ttp = bp->dcbx_port_params.app.traffic_type_priority;
1825         int mfw_configured = SHMEM2_HAS(bp, drv_flags) &&
1826                              GET_FLAGS(SHMEM2_RD(bp, drv_flags),
1827                                        1 << DRV_FLAGS_DCB_MFW_CONFIGURED);
1828
1829         memset(pfc_fw_cfg, 0, sizeof(*pfc_fw_cfg));
1830
1831         /* to disable DCB - the structure must be zeroed */
1832         if ((bp->dcbx_error & DCBX_REMOTE_MIB_ERROR) && !mfw_configured)
1833                 return;
1834
1835         /*shortcut*/
1836         tt2cos = pfc_fw_cfg->traffic_type_to_priority_cos;
1837
1838         /* Fw version should be incremented each update */
1839         pfc_fw_cfg->dcb_version = ++bp->dcb_version;
1840         pfc_fw_cfg->dcb_enabled = 1;
1841
1842         /* Fill priority parameters */
1843         for (pri = 0; pri < LLFC_DRIVER_TRAFFIC_TYPE_MAX; pri++) {
1844                 tt2cos[pri].priority = ttp[pri];
1845                 pri_bit = 1 << tt2cos[pri].priority;
1846
1847                 /* Fill COS parameters based on COS calculated to
1848                  * make it more general for future use */
1849                 for (cos = 0; cos < bp->dcbx_port_params.ets.num_of_cos; cos++)
1850                         if (bp->dcbx_port_params.ets.cos_params[cos].
1851                                                 pri_bitmask & pri_bit)
1852                                         tt2cos[pri].cos = cos;
1853         }
1854
1855         /* we never want the FW to add a 0 vlan tag */
1856         pfc_fw_cfg->dont_add_pri_0_en = 1;
1857
1858         bnx2x_dcbx_print_cos_params(bp, pfc_fw_cfg);
1859 }
1860
1861 void bnx2x_dcbx_pmf_update(struct bnx2x *bp)
1862 {
1863         /* if we need to synchronize DCBX result from prev PMF
1864          * read it from shmem and update bp and netdev accordingly
1865          */
1866         if (SHMEM2_HAS(bp, drv_flags) &&
1867            GET_FLAGS(SHMEM2_RD(bp, drv_flags), 1 << DRV_FLAGS_DCB_CONFIGURED)) {
1868                 /* Read neg results if dcbx is in the FW */
1869                 if (bnx2x_dcbx_read_shmem_neg_results(bp))
1870                         return;
1871
1872                 bnx2x_dump_dcbx_drv_param(bp, &bp->dcbx_local_feat,
1873                                           bp->dcbx_error);
1874                 bnx2x_get_dcbx_drv_param(bp, &bp->dcbx_local_feat,
1875                                          bp->dcbx_error);
1876 #ifdef BCM_DCBNL
1877                 /*
1878                  * Add new app tlvs to dcbnl
1879                  */
1880                 bnx2x_dcbnl_update_applist(bp, false);
1881                 /*
1882                  * Send a notification for the new negotiated parameters
1883                  */
1884                 dcbnl_cee_notify(bp->dev, RTM_GETDCB, DCB_CMD_CEE_GET, 0, 0);
1885 #endif
1886                 /*
1887                  * reconfigure the netdevice with the results of the new
1888                  * dcbx negotiation.
1889                  */
1890                 bnx2x_dcbx_update_tc_mapping(bp);
1891         }
1892 }
1893
1894 /* DCB netlink */
1895 #ifdef BCM_DCBNL
1896
1897 #define BNX2X_DCBX_CAPS         (DCB_CAP_DCBX_LLD_MANAGED | \
1898                                 DCB_CAP_DCBX_VER_CEE | DCB_CAP_DCBX_STATIC)
1899
1900 static inline bool bnx2x_dcbnl_set_valid(struct bnx2x *bp)
1901 {
1902         /* validate dcbnl call that may change HW state:
1903          * DCB is on and DCBX mode was SUCCESSFULLY set by the user.
1904          */
1905         return bp->dcb_state && bp->dcbx_mode_uset;
1906 }
1907
1908 static u8 bnx2x_dcbnl_get_state(struct net_device *netdev)
1909 {
1910         struct bnx2x *bp = netdev_priv(netdev);
1911         DP(BNX2X_MSG_DCB, "state = %d\n", bp->dcb_state);
1912         return bp->dcb_state;
1913 }
1914
1915 static u8 bnx2x_dcbnl_set_state(struct net_device *netdev, u8 state)
1916 {
1917         struct bnx2x *bp = netdev_priv(netdev);
1918         DP(BNX2X_MSG_DCB, "state = %s\n", state ? "on" : "off");
1919
1920         /* Fail to set state to "enabled" if dcbx is disabled in nvram */
1921         if (state && ((bp->dcbx_enabled == BNX2X_DCBX_ENABLED_OFF) ||
1922                       (bp->dcbx_enabled == BNX2X_DCBX_ENABLED_INVALID))) {
1923                 DP(BNX2X_MSG_DCB, "Can not set dcbx to enabled while it is disabled in nvm\n");
1924                 return 1;
1925         }
1926
1927         bnx2x_dcbx_set_state(bp, (state ? true : false), bp->dcbx_enabled);
1928         return 0;
1929 }
1930
1931 static void bnx2x_dcbnl_get_perm_hw_addr(struct net_device *netdev,
1932                                          u8 *perm_addr)
1933 {
1934         struct bnx2x *bp = netdev_priv(netdev);
1935         DP(BNX2X_MSG_DCB, "GET-PERM-ADDR\n");
1936
1937         /* first the HW mac address */
1938         memcpy(perm_addr, netdev->dev_addr, netdev->addr_len);
1939
1940         if (CNIC_LOADED(bp))
1941                 /* second SAN address */
1942                 memcpy(perm_addr+netdev->addr_len, bp->fip_mac,
1943                        netdev->addr_len);
1944 }
1945
1946 static void bnx2x_dcbnl_set_pg_tccfg_tx(struct net_device *netdev, int prio,
1947                                         u8 prio_type, u8 pgid, u8 bw_pct,
1948                                         u8 up_map)
1949 {
1950         struct bnx2x *bp = netdev_priv(netdev);
1951
1952         DP(BNX2X_MSG_DCB, "prio[%d] = %d\n", prio, pgid);
1953         if (!bnx2x_dcbnl_set_valid(bp) || prio >= DCBX_MAX_NUM_PRI_PG_ENTRIES)
1954                 return;
1955
1956         /**
1957          * bw_pct ignored -     band-width percentage devision between user
1958          *                      priorities within the same group is not
1959          *                      standard and hence not supported
1960          *
1961          * prio_type ignored -  priority levels within the same group are not
1962          *                      standard and hence are not supported. According
1963          *                      to the standard pgid 15 is dedicated to strict
1964          *                      priority traffic (on the port level).
1965          *
1966          * up_map ignored
1967          */
1968
1969         bp->dcbx_config_params.admin_configuration_ets_pg[prio] = pgid;
1970         bp->dcbx_config_params.admin_ets_configuration_tx_enable = 1;
1971 }
1972
1973 static void bnx2x_dcbnl_set_pg_bwgcfg_tx(struct net_device *netdev,
1974                                          int pgid, u8 bw_pct)
1975 {
1976         struct bnx2x *bp = netdev_priv(netdev);
1977         DP(BNX2X_MSG_DCB, "pgid[%d] = %d\n", pgid, bw_pct);
1978
1979         if (!bnx2x_dcbnl_set_valid(bp) || pgid >= DCBX_MAX_NUM_PG_BW_ENTRIES)
1980                 return;
1981
1982         bp->dcbx_config_params.admin_configuration_bw_precentage[pgid] = bw_pct;
1983         bp->dcbx_config_params.admin_ets_configuration_tx_enable = 1;
1984 }
1985
1986 static void bnx2x_dcbnl_set_pg_tccfg_rx(struct net_device *netdev, int prio,
1987                                         u8 prio_type, u8 pgid, u8 bw_pct,
1988                                         u8 up_map)
1989 {
1990         struct bnx2x *bp = netdev_priv(netdev);
1991         DP(BNX2X_MSG_DCB, "Nothing to set; No RX support\n");
1992 }
1993
1994 static void bnx2x_dcbnl_set_pg_bwgcfg_rx(struct net_device *netdev,
1995                                          int pgid, u8 bw_pct)
1996 {
1997         struct bnx2x *bp = netdev_priv(netdev);
1998         DP(BNX2X_MSG_DCB, "Nothing to set; No RX support\n");
1999 }
2000
2001 static void bnx2x_dcbnl_get_pg_tccfg_tx(struct net_device *netdev, int prio,
2002                                         u8 *prio_type, u8 *pgid, u8 *bw_pct,
2003                                         u8 *up_map)
2004 {
2005         struct bnx2x *bp = netdev_priv(netdev);
2006         DP(BNX2X_MSG_DCB, "prio = %d\n", prio);
2007
2008         /**
2009          * bw_pct ignored -     band-width percentage devision between user
2010          *                      priorities within the same group is not
2011          *                      standard and hence not supported
2012          *
2013          * prio_type ignored -  priority levels within the same group are not
2014          *                      standard and hence are not supported. According
2015          *                      to the standard pgid 15 is dedicated to strict
2016          *                      priority traffic (on the port level).
2017          *
2018          * up_map ignored
2019          */
2020         *up_map = *bw_pct = *prio_type = *pgid = 0;
2021
2022         if (!bp->dcb_state || prio >= DCBX_MAX_NUM_PRI_PG_ENTRIES)
2023                 return;
2024
2025         *pgid = DCBX_PRI_PG_GET(bp->dcbx_local_feat.ets.pri_pg_tbl, prio);
2026 }
2027
2028 static void bnx2x_dcbnl_get_pg_bwgcfg_tx(struct net_device *netdev,
2029                                          int pgid, u8 *bw_pct)
2030 {
2031         struct bnx2x *bp = netdev_priv(netdev);
2032         DP(BNX2X_MSG_DCB, "pgid = %d\n", pgid);
2033
2034         *bw_pct = 0;
2035
2036         if (!bp->dcb_state || pgid >= DCBX_MAX_NUM_PG_BW_ENTRIES)
2037                 return;
2038
2039         *bw_pct = DCBX_PG_BW_GET(bp->dcbx_local_feat.ets.pg_bw_tbl, pgid);
2040 }
2041
2042 static void bnx2x_dcbnl_get_pg_tccfg_rx(struct net_device *netdev, int prio,
2043                                         u8 *prio_type, u8 *pgid, u8 *bw_pct,
2044                                         u8 *up_map)
2045 {
2046         struct bnx2x *bp = netdev_priv(netdev);
2047         DP(BNX2X_MSG_DCB, "Nothing to get; No RX support\n");
2048
2049         *prio_type = *pgid = *bw_pct = *up_map = 0;
2050 }
2051
2052 static void bnx2x_dcbnl_get_pg_bwgcfg_rx(struct net_device *netdev,
2053                                          int pgid, u8 *bw_pct)
2054 {
2055         struct bnx2x *bp = netdev_priv(netdev);
2056         DP(BNX2X_MSG_DCB, "Nothing to get; No RX support\n");
2057
2058         *bw_pct = 0;
2059 }
2060
2061 static void bnx2x_dcbnl_set_pfc_cfg(struct net_device *netdev, int prio,
2062                                     u8 setting)
2063 {
2064         struct bnx2x *bp = netdev_priv(netdev);
2065         DP(BNX2X_MSG_DCB, "prio[%d] = %d\n", prio, setting);
2066
2067         if (!bnx2x_dcbnl_set_valid(bp) || prio >= MAX_PFC_PRIORITIES)
2068                 return;
2069
2070         if (setting) {
2071                 bp->dcbx_config_params.admin_pfc_bitmap |= (1 << prio);
2072                 bp->dcbx_config_params.admin_pfc_tx_enable = 1;
2073         } else {
2074                 bp->dcbx_config_params.admin_pfc_bitmap &= ~(1 << prio);
2075         }
2076 }
2077
2078 static void bnx2x_dcbnl_get_pfc_cfg(struct net_device *netdev, int prio,
2079                                     u8 *setting)
2080 {
2081         struct bnx2x *bp = netdev_priv(netdev);
2082         DP(BNX2X_MSG_DCB, "prio = %d\n", prio);
2083
2084         *setting = 0;
2085
2086         if (!bp->dcb_state || prio >= MAX_PFC_PRIORITIES)
2087                 return;
2088
2089         *setting = (bp->dcbx_local_feat.pfc.pri_en_bitmap >> prio) & 0x1;
2090 }
2091
2092 static u8 bnx2x_dcbnl_set_all(struct net_device *netdev)
2093 {
2094         struct bnx2x *bp = netdev_priv(netdev);
2095
2096         DP(BNX2X_MSG_DCB, "SET-ALL\n");
2097
2098         if (!bnx2x_dcbnl_set_valid(bp))
2099                 return 1;
2100
2101         if (bp->recovery_state != BNX2X_RECOVERY_DONE) {
2102                 netdev_err(bp->dev,
2103                            "Handling parity error recovery. Try again later\n");
2104                 return 1;
2105         }
2106         if (netif_running(bp->dev)) {
2107                 bnx2x_update_drv_flags(bp,
2108                                        1 << DRV_FLAGS_DCB_MFW_CONFIGURED,
2109                                        1);
2110                 bnx2x_dcbx_init(bp, true);
2111         }
2112         DP(BNX2X_MSG_DCB, "set_dcbx_params done\n");
2113
2114         return 0;
2115 }
2116
2117 static u8 bnx2x_dcbnl_get_cap(struct net_device *netdev, int capid, u8 *cap)
2118 {
2119         struct bnx2x *bp = netdev_priv(netdev);
2120         u8 rval = 0;
2121
2122         if (bp->dcb_state) {
2123                 switch (capid) {
2124                 case DCB_CAP_ATTR_PG:
2125                         *cap = true;
2126                         break;
2127                 case DCB_CAP_ATTR_PFC:
2128                         *cap = true;
2129                         break;
2130                 case DCB_CAP_ATTR_UP2TC:
2131                         *cap = false;
2132                         break;
2133                 case DCB_CAP_ATTR_PG_TCS:
2134                         *cap = 0x80;    /* 8 priorities for PGs */
2135                         break;
2136                 case DCB_CAP_ATTR_PFC_TCS:
2137                         *cap = 0x80;    /* 8 priorities for PFC */
2138                         break;
2139                 case DCB_CAP_ATTR_GSP:
2140                         *cap = true;
2141                         break;
2142                 case DCB_CAP_ATTR_BCN:
2143                         *cap = false;
2144                         break;
2145                 case DCB_CAP_ATTR_DCBX:
2146                         *cap = BNX2X_DCBX_CAPS;
2147                         break;
2148                 default:
2149                         BNX2X_ERR("Non valid capability ID\n");
2150                         rval = 1;
2151                         break;
2152                 }
2153         } else {
2154                 DP(BNX2X_MSG_DCB, "DCB disabled\n");
2155                 rval = 1;
2156         }
2157
2158         DP(BNX2X_MSG_DCB, "capid %d:%x\n", capid, *cap);
2159         return rval;
2160 }
2161
2162 static int bnx2x_dcbnl_get_numtcs(struct net_device *netdev, int tcid, u8 *num)
2163 {
2164         struct bnx2x *bp = netdev_priv(netdev);
2165         u8 rval = 0;
2166
2167         DP(BNX2X_MSG_DCB, "tcid %d\n", tcid);
2168
2169         if (bp->dcb_state) {
2170                 switch (tcid) {
2171                 case DCB_NUMTCS_ATTR_PG:
2172                         *num = CHIP_IS_E3B0(bp) ? DCBX_COS_MAX_NUM_E3B0 :
2173                                                   DCBX_COS_MAX_NUM_E2;
2174                         break;
2175                 case DCB_NUMTCS_ATTR_PFC:
2176                         *num = CHIP_IS_E3B0(bp) ? DCBX_COS_MAX_NUM_E3B0 :
2177                                                   DCBX_COS_MAX_NUM_E2;
2178                         break;
2179                 default:
2180                         BNX2X_ERR("Non valid TC-ID\n");
2181                         rval = 1;
2182                         break;
2183                 }
2184         } else {
2185                 DP(BNX2X_MSG_DCB, "DCB disabled\n");
2186                 rval = 1;
2187         }
2188
2189         return rval;
2190 }
2191
2192 static int bnx2x_dcbnl_set_numtcs(struct net_device *netdev, int tcid, u8 num)
2193 {
2194         struct bnx2x *bp = netdev_priv(netdev);
2195         DP(BNX2X_MSG_DCB, "num tcs = %d; Not supported\n", num);
2196         return -EINVAL;
2197 }
2198
2199 static u8 bnx2x_dcbnl_get_pfc_state(struct net_device *netdev)
2200 {
2201         struct bnx2x *bp = netdev_priv(netdev);
2202         DP(BNX2X_MSG_DCB, "state = %d\n", bp->dcbx_local_feat.pfc.enabled);
2203
2204         if (!bp->dcb_state)
2205                 return 0;
2206
2207         return bp->dcbx_local_feat.pfc.enabled;
2208 }
2209
2210 static void bnx2x_dcbnl_set_pfc_state(struct net_device *netdev, u8 state)
2211 {
2212         struct bnx2x *bp = netdev_priv(netdev);
2213         DP(BNX2X_MSG_DCB, "state = %s\n", state ? "on" : "off");
2214
2215         if (!bnx2x_dcbnl_set_valid(bp))
2216                 return;
2217
2218         bp->dcbx_config_params.admin_pfc_tx_enable =
2219         bp->dcbx_config_params.admin_pfc_enable = (state ? 1 : 0);
2220 }
2221
2222 static void bnx2x_admin_app_set_ent(
2223         struct bnx2x_admin_priority_app_table *app_ent,
2224         u8 idtype, u16 idval, u8 up)
2225 {
2226         app_ent->valid = 1;
2227
2228         switch (idtype) {
2229         case DCB_APP_IDTYPE_ETHTYPE:
2230                 app_ent->traffic_type = TRAFFIC_TYPE_ETH;
2231                 break;
2232         case DCB_APP_IDTYPE_PORTNUM:
2233                 app_ent->traffic_type = TRAFFIC_TYPE_PORT;
2234                 break;
2235         default:
2236                 break; /* never gets here */
2237         }
2238         app_ent->app_id = idval;
2239         app_ent->priority = up;
2240 }
2241
2242 static bool bnx2x_admin_app_is_equal(
2243         struct bnx2x_admin_priority_app_table *app_ent,
2244         u8 idtype, u16 idval)
2245 {
2246         if (!app_ent->valid)
2247                 return false;
2248
2249         switch (idtype) {
2250         case DCB_APP_IDTYPE_ETHTYPE:
2251                 if (app_ent->traffic_type != TRAFFIC_TYPE_ETH)
2252                         return false;
2253                 break;
2254         case DCB_APP_IDTYPE_PORTNUM:
2255                 if (app_ent->traffic_type != TRAFFIC_TYPE_PORT)
2256                         return false;
2257                 break;
2258         default:
2259                 return false;
2260         }
2261         if (app_ent->app_id != idval)
2262                 return false;
2263
2264         return true;
2265 }
2266
2267 static int bnx2x_set_admin_app_up(struct bnx2x *bp, u8 idtype, u16 idval, u8 up)
2268 {
2269         int i, ff;
2270
2271         /* iterate over the app entries looking for idtype and idval */
2272         for (i = 0, ff = -1; i < DCBX_CONFIG_MAX_APP_PROTOCOL; i++) {
2273                 struct bnx2x_admin_priority_app_table *app_ent =
2274                         &bp->dcbx_config_params.admin_priority_app_table[i];
2275                 if (bnx2x_admin_app_is_equal(app_ent, idtype, idval))
2276                         break;
2277
2278                 if (ff < 0 && !app_ent->valid)
2279                         ff = i;
2280         }
2281         if (i < DCBX_CONFIG_MAX_APP_PROTOCOL)
2282                 /* if found overwrite up */
2283                 bp->dcbx_config_params.
2284                         admin_priority_app_table[i].priority = up;
2285         else if (ff >= 0)
2286                 /* not found use first-free */
2287                 bnx2x_admin_app_set_ent(
2288                         &bp->dcbx_config_params.admin_priority_app_table[ff],
2289                         idtype, idval, up);
2290         else {
2291                 /* app table is full */
2292                 BNX2X_ERR("Application table is too large\n");
2293                 return -EBUSY;
2294         }
2295
2296         /* up configured, if not 0 make sure feature is enabled */
2297         if (up)
2298                 bp->dcbx_config_params.admin_application_priority_tx_enable = 1;
2299
2300         return 0;
2301 }
2302
2303 static int bnx2x_dcbnl_set_app_up(struct net_device *netdev, u8 idtype,
2304                                   u16 idval, u8 up)
2305 {
2306         struct bnx2x *bp = netdev_priv(netdev);
2307
2308         DP(BNX2X_MSG_DCB, "app_type %d, app_id %x, prio bitmap %d\n",
2309            idtype, idval, up);
2310
2311         if (!bnx2x_dcbnl_set_valid(bp)) {
2312                 DP(BNX2X_MSG_DCB, "dcbnl call not valid\n");
2313                 return -EINVAL;
2314         }
2315
2316         /* verify idtype */
2317         switch (idtype) {
2318         case DCB_APP_IDTYPE_ETHTYPE:
2319         case DCB_APP_IDTYPE_PORTNUM:
2320                 break;
2321         default:
2322                 DP(BNX2X_MSG_DCB, "Wrong ID type\n");
2323                 return -EINVAL;
2324         }
2325         return bnx2x_set_admin_app_up(bp, idtype, idval, up);
2326 }
2327
2328 static u8 bnx2x_dcbnl_get_dcbx(struct net_device *netdev)
2329 {
2330         struct bnx2x *bp = netdev_priv(netdev);
2331         u8 state;
2332
2333         state = DCB_CAP_DCBX_LLD_MANAGED | DCB_CAP_DCBX_VER_CEE;
2334
2335         if (bp->dcbx_enabled == BNX2X_DCBX_ENABLED_ON_NEG_OFF)
2336                 state |= DCB_CAP_DCBX_STATIC;
2337
2338         return state;
2339 }
2340
2341 static u8 bnx2x_dcbnl_set_dcbx(struct net_device *netdev, u8 state)
2342 {
2343         struct bnx2x *bp = netdev_priv(netdev);
2344         DP(BNX2X_MSG_DCB, "state = %02x\n", state);
2345
2346         /* set dcbx mode */
2347
2348         if ((state & BNX2X_DCBX_CAPS) != state) {
2349                 BNX2X_ERR("Requested DCBX mode %x is beyond advertised capabilities\n",
2350                           state);
2351                 return 1;
2352         }
2353
2354         if (bp->dcb_state != BNX2X_DCB_STATE_ON) {
2355                 BNX2X_ERR("DCB turned off, DCBX configuration is invalid\n");
2356                 return 1;
2357         }
2358
2359         if (state & DCB_CAP_DCBX_STATIC)
2360                 bp->dcbx_enabled = BNX2X_DCBX_ENABLED_ON_NEG_OFF;
2361         else
2362                 bp->dcbx_enabled = BNX2X_DCBX_ENABLED_ON_NEG_ON;
2363
2364         bp->dcbx_mode_uset = true;
2365         return 0;
2366 }
2367
2368 static u8 bnx2x_dcbnl_get_featcfg(struct net_device *netdev, int featid,
2369                                   u8 *flags)
2370 {
2371         struct bnx2x *bp = netdev_priv(netdev);
2372         u8 rval = 0;
2373
2374         DP(BNX2X_MSG_DCB, "featid %d\n", featid);
2375
2376         if (bp->dcb_state) {
2377                 *flags = 0;
2378                 switch (featid) {
2379                 case DCB_FEATCFG_ATTR_PG:
2380                         if (bp->dcbx_local_feat.ets.enabled)
2381                                 *flags |= DCB_FEATCFG_ENABLE;
2382                         if (bp->dcbx_error & (DCBX_LOCAL_ETS_ERROR |
2383                                               DCBX_REMOTE_MIB_ERROR))
2384                                 *flags |= DCB_FEATCFG_ERROR;
2385                         break;
2386                 case DCB_FEATCFG_ATTR_PFC:
2387                         if (bp->dcbx_local_feat.pfc.enabled)
2388                                 *flags |= DCB_FEATCFG_ENABLE;
2389                         if (bp->dcbx_error & (DCBX_LOCAL_PFC_ERROR |
2390                                               DCBX_LOCAL_PFC_MISMATCH |
2391                                               DCBX_REMOTE_MIB_ERROR))
2392                                 *flags |= DCB_FEATCFG_ERROR;
2393                         break;
2394                 case DCB_FEATCFG_ATTR_APP:
2395                         if (bp->dcbx_local_feat.app.enabled)
2396                                 *flags |= DCB_FEATCFG_ENABLE;
2397                         if (bp->dcbx_error & (DCBX_LOCAL_APP_ERROR |
2398                                               DCBX_LOCAL_APP_MISMATCH |
2399                                               DCBX_REMOTE_MIB_ERROR))
2400                                 *flags |= DCB_FEATCFG_ERROR;
2401                         break;
2402                 default:
2403                         BNX2X_ERR("Non valid feature-ID\n");
2404                         rval = 1;
2405                         break;
2406                 }
2407         } else {
2408                 DP(BNX2X_MSG_DCB, "DCB disabled\n");
2409                 rval = 1;
2410         }
2411
2412         return rval;
2413 }
2414
2415 static u8 bnx2x_dcbnl_set_featcfg(struct net_device *netdev, int featid,
2416                                   u8 flags)
2417 {
2418         struct bnx2x *bp = netdev_priv(netdev);
2419         u8 rval = 0;
2420
2421         DP(BNX2X_MSG_DCB, "featid = %d flags = %02x\n", featid, flags);
2422
2423         /* ignore the 'advertise' flag */
2424         if (bnx2x_dcbnl_set_valid(bp)) {
2425                 switch (featid) {
2426                 case DCB_FEATCFG_ATTR_PG:
2427                         bp->dcbx_config_params.admin_ets_enable =
2428                                 flags & DCB_FEATCFG_ENABLE ? 1 : 0;
2429                         bp->dcbx_config_params.admin_ets_willing =
2430                                 flags & DCB_FEATCFG_WILLING ? 1 : 0;
2431                         break;
2432                 case DCB_FEATCFG_ATTR_PFC:
2433                         bp->dcbx_config_params.admin_pfc_enable =
2434                                 flags & DCB_FEATCFG_ENABLE ? 1 : 0;
2435                         bp->dcbx_config_params.admin_pfc_willing =
2436                                 flags & DCB_FEATCFG_WILLING ? 1 : 0;
2437                         break;
2438                 case DCB_FEATCFG_ATTR_APP:
2439                         /* ignore enable, always enabled */
2440                         bp->dcbx_config_params.admin_app_priority_willing =
2441                                 flags & DCB_FEATCFG_WILLING ? 1 : 0;
2442                         break;
2443                 default:
2444                         BNX2X_ERR("Non valid feature-ID\n");
2445                         rval = 1;
2446                         break;
2447                 }
2448         } else {
2449                 DP(BNX2X_MSG_DCB, "dcbnl call not valid\n");
2450                 rval = 1;
2451         }
2452
2453         return rval;
2454 }
2455
2456 static int bnx2x_peer_appinfo(struct net_device *netdev,
2457                               struct dcb_peer_app_info *info, u16* app_count)
2458 {
2459         int i;
2460         struct bnx2x *bp = netdev_priv(netdev);
2461
2462         DP(BNX2X_MSG_DCB, "APP-INFO\n");
2463
2464         info->willing = (bp->dcbx_remote_flags & DCBX_APP_REM_WILLING) ?: 0;
2465         info->error = (bp->dcbx_remote_flags & DCBX_APP_RX_ERROR) ?: 0;
2466         *app_count = 0;
2467
2468         for (i = 0; i < DCBX_MAX_APP_PROTOCOL; i++)
2469                 if (bp->dcbx_remote_feat.app.app_pri_tbl[i].appBitfield &
2470                     DCBX_APP_ENTRY_VALID)
2471                         (*app_count)++;
2472         return 0;
2473 }
2474
2475 static int bnx2x_peer_apptable(struct net_device *netdev,
2476                                struct dcb_app *table)
2477 {
2478         int i, j;
2479         struct bnx2x *bp = netdev_priv(netdev);
2480
2481         DP(BNX2X_MSG_DCB, "APP-TABLE\n");
2482
2483         for (i = 0, j = 0; i < DCBX_MAX_APP_PROTOCOL; i++) {
2484                 struct dcbx_app_priority_entry *ent =
2485                         &bp->dcbx_remote_feat.app.app_pri_tbl[i];
2486
2487                 if (ent->appBitfield & DCBX_APP_ENTRY_VALID) {
2488                         table[j].selector = bnx2x_dcbx_dcbnl_app_idtype(ent);
2489                         table[j].priority = bnx2x_dcbx_dcbnl_app_up(ent);
2490                         table[j++].protocol = ent->app_id;
2491                 }
2492         }
2493         return 0;
2494 }
2495
2496 static int bnx2x_cee_peer_getpg(struct net_device *netdev, struct cee_pg *pg)
2497 {
2498         int i;
2499         struct bnx2x *bp = netdev_priv(netdev);
2500
2501         pg->willing = (bp->dcbx_remote_flags & DCBX_ETS_REM_WILLING) ?: 0;
2502
2503         for (i = 0; i < CEE_DCBX_MAX_PGS; i++) {
2504                 pg->pg_bw[i] =
2505                         DCBX_PG_BW_GET(bp->dcbx_remote_feat.ets.pg_bw_tbl, i);
2506                 pg->prio_pg[i] =
2507                         DCBX_PRI_PG_GET(bp->dcbx_remote_feat.ets.pri_pg_tbl, i);
2508         }
2509         return 0;
2510 }
2511
2512 static int bnx2x_cee_peer_getpfc(struct net_device *netdev,
2513                                  struct cee_pfc *pfc)
2514 {
2515         struct bnx2x *bp = netdev_priv(netdev);
2516         pfc->tcs_supported = bp->dcbx_remote_feat.pfc.pfc_caps;
2517         pfc->pfc_en = bp->dcbx_remote_feat.pfc.pri_en_bitmap;
2518         return 0;
2519 }
2520
2521 const struct dcbnl_rtnl_ops bnx2x_dcbnl_ops = {
2522         .getstate               = bnx2x_dcbnl_get_state,
2523         .setstate               = bnx2x_dcbnl_set_state,
2524         .getpermhwaddr          = bnx2x_dcbnl_get_perm_hw_addr,
2525         .setpgtccfgtx           = bnx2x_dcbnl_set_pg_tccfg_tx,
2526         .setpgbwgcfgtx          = bnx2x_dcbnl_set_pg_bwgcfg_tx,
2527         .setpgtccfgrx           = bnx2x_dcbnl_set_pg_tccfg_rx,
2528         .setpgbwgcfgrx          = bnx2x_dcbnl_set_pg_bwgcfg_rx,
2529         .getpgtccfgtx           = bnx2x_dcbnl_get_pg_tccfg_tx,
2530         .getpgbwgcfgtx          = bnx2x_dcbnl_get_pg_bwgcfg_tx,
2531         .getpgtccfgrx           = bnx2x_dcbnl_get_pg_tccfg_rx,
2532         .getpgbwgcfgrx          = bnx2x_dcbnl_get_pg_bwgcfg_rx,
2533         .setpfccfg              = bnx2x_dcbnl_set_pfc_cfg,
2534         .getpfccfg              = bnx2x_dcbnl_get_pfc_cfg,
2535         .setall                 = bnx2x_dcbnl_set_all,
2536         .getcap                 = bnx2x_dcbnl_get_cap,
2537         .getnumtcs              = bnx2x_dcbnl_get_numtcs,
2538         .setnumtcs              = bnx2x_dcbnl_set_numtcs,
2539         .getpfcstate            = bnx2x_dcbnl_get_pfc_state,
2540         .setpfcstate            = bnx2x_dcbnl_set_pfc_state,
2541         .setapp                 = bnx2x_dcbnl_set_app_up,
2542         .getdcbx                = bnx2x_dcbnl_get_dcbx,
2543         .setdcbx                = bnx2x_dcbnl_set_dcbx,
2544         .getfeatcfg             = bnx2x_dcbnl_get_featcfg,
2545         .setfeatcfg             = bnx2x_dcbnl_set_featcfg,
2546         .peer_getappinfo        = bnx2x_peer_appinfo,
2547         .peer_getapptable       = bnx2x_peer_apptable,
2548         .cee_peer_getpg         = bnx2x_cee_peer_getpg,
2549         .cee_peer_getpfc        = bnx2x_cee_peer_getpfc,
2550 };
2551
2552 #endif /* BCM_DCBNL */