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: Eilon Greenstein <eilong@broadcom.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         if (!test_and_set_bit(BNX2X_SP_RTNL_SETUP_TC, &bp->sp_rtnl_state))
 714                 schedule_delayed_work(&bp->sp_rtnl_task, 0);
 715 }
 716
 717 void bnx2x_dcbx_set_params(struct bnx2x *bp, u32 state)
 718 {
 719         switch (state) {
 720         case BNX2X_DCBX_STATE_NEG_RECEIVED:
 721                 {
 722                         DP(BNX2X_MSG_DCB, "BNX2X_DCBX_STATE_NEG_RECEIVED\n");
 723 #ifdef BCM_DCBNL
 724                         /**
 725                          * Delete app tlvs from dcbnl before reading new
 726                          * negotiation results
 727                          */
 728                         bnx2x_dcbnl_update_applist(bp, true);
 729
 730                         /* Read remote mib if dcbx is in the FW */
 731                         if (bnx2x_dcbx_read_shmem_remote_mib(bp))
 732                                 return;
 733 #endif
 734                         /* Read neg results if dcbx is in the FW */
 735                         if (bnx2x_dcbx_read_shmem_neg_results(bp))
 736                                 return;
 737
 738                         bnx2x_dump_dcbx_drv_param(bp, &bp->dcbx_local_feat,
 739                                                   bp->dcbx_error);
 740
 741                         bnx2x_get_dcbx_drv_param(bp, &bp->dcbx_local_feat,
 742                                                  bp->dcbx_error);
 743
 744                         /* mark DCBX result for PMF migration */
 745                         bnx2x_update_drv_flags(bp,
 746                                                1 << DRV_FLAGS_DCB_CONFIGURED,
 747                                                1);
 748 #ifdef BCM_DCBNL
 749                         /*
 750                          * Add new app tlvs to dcbnl
 751                          */
 752                         bnx2x_dcbnl_update_applist(bp, false);
 753 #endif
 754                         /*
 755                          * reconfigure the netdevice with the results of the new
 756                          * dcbx negotiation.
 757                          */
 758                         bnx2x_dcbx_update_tc_mapping(bp);
 759
 760                         /*
 761                          * allow other functions to update their netdevices
 762                          * accordingly
 763                          */
 764                         if (IS_MF(bp))
 765                                 bnx2x_link_sync_notify(bp);
 766
 767                         set_bit(BNX2X_SP_RTNL_TX_STOP, &bp->sp_rtnl_state);
 768
 769                         schedule_delayed_work(&bp->sp_rtnl_task, 0);
 770
 771                         return;
 772                 }
 773         case BNX2X_DCBX_STATE_TX_PAUSED:
 774                 DP(BNX2X_MSG_DCB, "BNX2X_DCBX_STATE_TX_PAUSED\n");
 775                 bnx2x_pfc_set_pfc(bp);
 776
 777                 bnx2x_dcbx_update_ets_params(bp);
 778
 779                 /* ets may affect cmng configuration: reinit it in hw */
 780                 bnx2x_set_local_cmng(bp);
 781                 return;
 782         case BNX2X_DCBX_STATE_TX_RELEASED:
 783                 DP(BNX2X_MSG_DCB, "BNX2X_DCBX_STATE_TX_RELEASED\n");
 784                 bnx2x_fw_command(bp, DRV_MSG_CODE_DCBX_PMF_DRV_OK, 0);
 785 #ifdef BCM_DCBNL
 786                 /*
 787                  * Send a notification for the new negotiated parameters
 788                  */
 789                 dcbnl_cee_notify(bp->dev, RTM_GETDCB, DCB_CMD_CEE_GET, 0, 0);
 790 #endif
 791                 return;
 792         default:
 793                 BNX2X_ERR("Unknown DCBX_STATE\n");
 794         }
 795 }
 796
 797 #define LLDP_ADMIN_MIB_OFFSET(bp)       (PORT_MAX*sizeof(struct lldp_params) + \
 798                                       BP_PORT(bp)*sizeof(struct lldp_admin_mib))
 799
 800 static void bnx2x_dcbx_admin_mib_updated_params(struct bnx2x *bp,
 801                                 u32 dcbx_lldp_params_offset)
 802 {
 803         struct lldp_admin_mib admin_mib;
 804         u32 i, other_traf_type = PREDEFINED_APP_IDX_MAX, traf_type = 0;
 805         u32 offset = dcbx_lldp_params_offset + LLDP_ADMIN_MIB_OFFSET(bp);
 806
 807         /*shortcuts*/
 808         struct dcbx_features *af = &admin_mib.features;
 809         struct bnx2x_config_dcbx_params *dp = &bp->dcbx_config_params;
 810
 811         memset(&admin_mib, 0, sizeof(struct lldp_admin_mib));
 812
 813         /* Read the data first */
 814         bnx2x_read_data(bp, (u32 *)&admin_mib, offset,
 815                         sizeof(struct lldp_admin_mib));
 816
 817         if (bp->dcbx_enabled == BNX2X_DCBX_ENABLED_ON_NEG_ON)
 818                 SET_FLAGS(admin_mib.ver_cfg_flags, DCBX_DCBX_ENABLED);
 819         else
 820                 RESET_FLAGS(admin_mib.ver_cfg_flags, DCBX_DCBX_ENABLED);
 821
 822         if (dp->overwrite_settings == BNX2X_DCBX_OVERWRITE_SETTINGS_ENABLE) {
 823
 824                 RESET_FLAGS(admin_mib.ver_cfg_flags, DCBX_CEE_VERSION_MASK);
 825                 admin_mib.ver_cfg_flags |=
 826                         (dp->admin_dcbx_version << DCBX_CEE_VERSION_SHIFT) &
 827                          DCBX_CEE_VERSION_MASK;
 828
 829                 af->ets.enabled = (u8)dp->admin_ets_enable;
 830
 831                 af->pfc.enabled = (u8)dp->admin_pfc_enable;
 832
 833                 /* FOR IEEE dp->admin_tc_supported_tx_enable */
 834                 if (dp->admin_ets_configuration_tx_enable)
 835                         SET_FLAGS(admin_mib.ver_cfg_flags,
 836                                   DCBX_ETS_CONFIG_TX_ENABLED);
 837                 else
 838                         RESET_FLAGS(admin_mib.ver_cfg_flags,
 839                                     DCBX_ETS_CONFIG_TX_ENABLED);
 840                 /* For IEEE admin_ets_recommendation_tx_enable */
 841                 if (dp->admin_pfc_tx_enable)
 842                         SET_FLAGS(admin_mib.ver_cfg_flags,
 843                                   DCBX_PFC_CONFIG_TX_ENABLED);
 844                 else
 845                         RESET_FLAGS(admin_mib.ver_cfg_flags,
 846                                   DCBX_PFC_CONFIG_TX_ENABLED);
 847
 848                 if (dp->admin_application_priority_tx_enable)
 849                         SET_FLAGS(admin_mib.ver_cfg_flags,
 850                                   DCBX_APP_CONFIG_TX_ENABLED);
 851                 else
 852                         RESET_FLAGS(admin_mib.ver_cfg_flags,
 853                                   DCBX_APP_CONFIG_TX_ENABLED);
 854
 855                 if (dp->admin_ets_willing)
 856                         SET_FLAGS(admin_mib.ver_cfg_flags, DCBX_ETS_WILLING);
 857                 else
 858                         RESET_FLAGS(admin_mib.ver_cfg_flags, DCBX_ETS_WILLING);
 859                 /* For IEEE admin_ets_reco_valid */
 860                 if (dp->admin_pfc_willing)
 861                         SET_FLAGS(admin_mib.ver_cfg_flags, DCBX_PFC_WILLING);
 862                 else
 863                         RESET_FLAGS(admin_mib.ver_cfg_flags, DCBX_PFC_WILLING);
 864
 865                 if (dp->admin_app_priority_willing)
 866                         SET_FLAGS(admin_mib.ver_cfg_flags, DCBX_APP_WILLING);
 867                 else
 868                         RESET_FLAGS(admin_mib.ver_cfg_flags, DCBX_APP_WILLING);
 869
 870                 for (i = 0 ; i < DCBX_MAX_NUM_PG_BW_ENTRIES; i++) {
 871                         DCBX_PG_BW_SET(af->ets.pg_bw_tbl, i,
 872                                 (u8)dp->admin_configuration_bw_precentage[i]);
 873
 874                         DP(BNX2X_MSG_DCB, "pg_bw_tbl[%d] = %02x\n",
 875                            i, DCBX_PG_BW_GET(af->ets.pg_bw_tbl, i));
 876                 }
 877
 878                 for (i = 0; i < DCBX_MAX_NUM_PRI_PG_ENTRIES; i++) {
 879                         DCBX_PRI_PG_SET(af->ets.pri_pg_tbl, i,
 880                                         (u8)dp->admin_configuration_ets_pg[i]);
 881
 882                         DP(BNX2X_MSG_DCB, "pri_pg_tbl[%d] = %02x\n",
 883                            i, DCBX_PRI_PG_GET(af->ets.pri_pg_tbl, i));
 884                 }
 885
 886                 /*For IEEE admin_recommendation_bw_percentage
 887                  *For IEEE admin_recommendation_ets_pg */
 888                 af->pfc.pri_en_bitmap = (u8)dp->admin_pfc_bitmap;
 889                 for (i = 0; i < DCBX_CONFIG_MAX_APP_PROTOCOL; i++) {
 890                         if (dp->admin_priority_app_table[i].valid) {
 891                                 struct bnx2x_admin_priority_app_table *table =
 892                                         dp->admin_priority_app_table;
 893                                 if ((ETH_TYPE_FCOE == table[i].app_id) &&
 894                                    (TRAFFIC_TYPE_ETH == table[i].traffic_type))
 895                                         traf_type = FCOE_APP_IDX;
 896                                 else if ((TCP_PORT_ISCSI == table[i].app_id) &&
 897                                    (TRAFFIC_TYPE_PORT == table[i].traffic_type))
 898                                         traf_type = ISCSI_APP_IDX;
 899                                 else
 900                                         traf_type = other_traf_type++;
 901
 902                                 af->app.app_pri_tbl[traf_type].app_id =
 903                                         table[i].app_id;
 904
 905                                 af->app.app_pri_tbl[traf_type].pri_bitmap =
 906                                         (u8)(1 << table[i].priority);
 907
 908                                 af->app.app_pri_tbl[traf_type].appBitfield =
 909                                     (DCBX_APP_ENTRY_VALID);
 910
 911                                 af->app.app_pri_tbl[traf_type].appBitfield |=
 912                                    (TRAFFIC_TYPE_ETH == table[i].traffic_type) ?
 913                                         DCBX_APP_SF_ETH_TYPE : DCBX_APP_SF_PORT;
 914                         }
 915                 }
 916
 917                 af->app.default_pri = (u8)dp->admin_default_priority;
 918         }
 919
 920         /* Write the data. */
 921         bnx2x_write_data(bp, (u32 *)&admin_mib, offset,
 922                          sizeof(struct lldp_admin_mib));
 923 }
 924
 925 void bnx2x_dcbx_set_state(struct bnx2x *bp, bool dcb_on, u32 dcbx_enabled)
 926 {
 927         if (!CHIP_IS_E1x(bp)) {
 928                 bp->dcb_state = dcb_on;
 929                 bp->dcbx_enabled = dcbx_enabled;
 930         } else {
 931                 bp->dcb_state = false;
 932                 bp->dcbx_enabled = BNX2X_DCBX_ENABLED_INVALID;
 933         }
 934         DP(BNX2X_MSG_DCB, "DCB state [%s:%s]\n",
 935            dcb_on ? "ON" : "OFF",
 936            dcbx_enabled == BNX2X_DCBX_ENABLED_OFF ? "user-mode" :
 937            dcbx_enabled == BNX2X_DCBX_ENABLED_ON_NEG_OFF ? "on-chip static" :
 938            dcbx_enabled == BNX2X_DCBX_ENABLED_ON_NEG_ON ?
 939            "on-chip with negotiation" : "invalid");
 940 }
 941
 942 void bnx2x_dcbx_init_params(struct bnx2x *bp)
 943 {
 944         bp->dcbx_config_params.admin_dcbx_version = 0x0; /* 0 - CEE; 1 - IEEE */
 945         bp->dcbx_config_params.admin_ets_willing = 1;
 946         bp->dcbx_config_params.admin_pfc_willing = 1;
 947         bp->dcbx_config_params.overwrite_settings = 1;
 948         bp->dcbx_config_params.admin_ets_enable = 1;
 949         bp->dcbx_config_params.admin_pfc_enable = 1;
 950         bp->dcbx_config_params.admin_tc_supported_tx_enable = 1;
 951         bp->dcbx_config_params.admin_ets_configuration_tx_enable = 1;
 952         bp->dcbx_config_params.admin_pfc_tx_enable = 1;
 953         bp->dcbx_config_params.admin_application_priority_tx_enable = 1;
 954         bp->dcbx_config_params.admin_ets_reco_valid = 1;
 955         bp->dcbx_config_params.admin_app_priority_willing = 1;
 956         bp->dcbx_config_params.admin_configuration_bw_precentage[0] = 100;
 957         bp->dcbx_config_params.admin_configuration_bw_precentage[1] = 0;
 958         bp->dcbx_config_params.admin_configuration_bw_precentage[2] = 0;
 959         bp->dcbx_config_params.admin_configuration_bw_precentage[3] = 0;
 960         bp->dcbx_config_params.admin_configuration_bw_precentage[4] = 0;
 961         bp->dcbx_config_params.admin_configuration_bw_precentage[5] = 0;
 962         bp->dcbx_config_params.admin_configuration_bw_precentage[6] = 0;
 963         bp->dcbx_config_params.admin_configuration_bw_precentage[7] = 0;
 964         bp->dcbx_config_params.admin_configuration_ets_pg[0] = 0;
 965         bp->dcbx_config_params.admin_configuration_ets_pg[1] = 0;
 966         bp->dcbx_config_params.admin_configuration_ets_pg[2] = 0;
 967         bp->dcbx_config_params.admin_configuration_ets_pg[3] = 0;
 968         bp->dcbx_config_params.admin_configuration_ets_pg[4] = 0;
 969         bp->dcbx_config_params.admin_configuration_ets_pg[5] = 0;
 970         bp->dcbx_config_params.admin_configuration_ets_pg[6] = 0;
 971         bp->dcbx_config_params.admin_configuration_ets_pg[7] = 0;
 972         bp->dcbx_config_params.admin_recommendation_bw_precentage[0] = 100;
 973         bp->dcbx_config_params.admin_recommendation_bw_precentage[1] = 0;
 974         bp->dcbx_config_params.admin_recommendation_bw_precentage[2] = 0;
 975         bp->dcbx_config_params.admin_recommendation_bw_precentage[3] = 0;
 976         bp->dcbx_config_params.admin_recommendation_bw_precentage[4] = 0;
 977         bp->dcbx_config_params.admin_recommendation_bw_precentage[5] = 0;
 978         bp->dcbx_config_params.admin_recommendation_bw_precentage[6] = 0;
 979         bp->dcbx_config_params.admin_recommendation_bw_precentage[7] = 0;
 980         bp->dcbx_config_params.admin_recommendation_ets_pg[0] = 0;
 981         bp->dcbx_config_params.admin_recommendation_ets_pg[1] = 1;
 982         bp->dcbx_config_params.admin_recommendation_ets_pg[2] = 2;
 983         bp->dcbx_config_params.admin_recommendation_ets_pg[3] = 3;
 984         bp->dcbx_config_params.admin_recommendation_ets_pg[4] = 4;
 985         bp->dcbx_config_params.admin_recommendation_ets_pg[5] = 5;
 986         bp->dcbx_config_params.admin_recommendation_ets_pg[6] = 6;
 987         bp->dcbx_config_params.admin_recommendation_ets_pg[7] = 7;
 988         bp->dcbx_config_params.admin_pfc_bitmap = 0x0;
 989         bp->dcbx_config_params.admin_priority_app_table[0].valid = 0;
 990         bp->dcbx_config_params.admin_priority_app_table[1].valid = 0;
 991         bp->dcbx_config_params.admin_priority_app_table[2].valid = 0;
 992         bp->dcbx_config_params.admin_priority_app_table[3].valid = 0;
 993         bp->dcbx_config_params.admin_default_priority = 0;
 994 }
 995
 996 void bnx2x_dcbx_init(struct bnx2x *bp, bool update_shmem)
 997 {
 998         u32 dcbx_lldp_params_offset = SHMEM_LLDP_DCBX_PARAMS_NONE;
 999
1000         /* only PMF can send ADMIN msg to MFW in old MFW versions */
1001         if ((!bp->port.pmf) && (!(bp->flags & BC_SUPPORTS_DCBX_MSG_NON_PMF)))
1002                 return;
1003
1004         if (bp->dcbx_enabled <= 0)
1005                 return;
1006
1007         /* validate:
1008          * chip of good for dcbx version,
1009          * dcb is wanted
1010          * shmem2 contains DCBX support fields
1011          */
1012         DP(BNX2X_MSG_DCB, "dcb_state %d bp->port.pmf %d\n",
1013            bp->dcb_state, bp->port.pmf);
1014
1015         if (bp->dcb_state == BNX2X_DCB_STATE_ON &&
1016             SHMEM2_HAS(bp, dcbx_lldp_params_offset)) {
1017                 dcbx_lldp_params_offset =
1018                         SHMEM2_RD(bp, dcbx_lldp_params_offset);
1019
1020                 DP(BNX2X_MSG_DCB, "dcbx_lldp_params_offset 0x%x\n",
1021                    dcbx_lldp_params_offset);
1022
1023                 bnx2x_update_drv_flags(bp, 1 << DRV_FLAGS_DCB_CONFIGURED, 0);
1024
1025                 if (SHMEM_LLDP_DCBX_PARAMS_NONE != dcbx_lldp_params_offset) {
1026                         /* need HW lock to avoid scenario of two drivers
1027                          * writing in parallel to shmem
1028                          */
1029                         bnx2x_acquire_hw_lock(bp,
1030                                               HW_LOCK_RESOURCE_DCBX_ADMIN_MIB);
1031                         if (update_shmem)
1032                                 bnx2x_dcbx_admin_mib_updated_params(bp,
1033                                         dcbx_lldp_params_offset);
1034
1035                         /* Let HW start negotiation */
1036                         bnx2x_fw_command(bp,
1037                                          DRV_MSG_CODE_DCBX_ADMIN_PMF_MSG, 0);
1038                         /* release HW lock only after MFW acks that it finished
1039                          * reading values from shmem
1040                          */
1041                         bnx2x_release_hw_lock(bp,
1042                                               HW_LOCK_RESOURCE_DCBX_ADMIN_MIB);
1043                 }
1044         }
1045 }
1046 static void
1047 bnx2x_dcbx_print_cos_params(struct bnx2x *bp,
1048                             struct bnx2x_func_tx_start_params *pfc_fw_cfg)
1049 {
1050         u8 pri = 0;
1051         u8 cos = 0;
1052
1053         DP(BNX2X_MSG_DCB,
1054            "pfc_fw_cfg->dcb_version %x\n", pfc_fw_cfg->dcb_version);
1055         DP(BNX2X_MSG_DCB,
1056            "pdev->params.dcbx_port_params.pfc.priority_non_pauseable_mask %x\n",
1057            bp->dcbx_port_params.pfc.priority_non_pauseable_mask);
1058
1059         for (cos = 0 ; cos < bp->dcbx_port_params.ets.num_of_cos ; cos++) {
1060                 DP(BNX2X_MSG_DCB,
1061                    "pdev->params.dcbx_port_params.ets.cos_params[%d].pri_bitmask %x\n",
1062                    cos, bp->dcbx_port_params.ets.cos_params[cos].pri_bitmask);
1063
1064                 DP(BNX2X_MSG_DCB,
1065                    "pdev->params.dcbx_port_params.ets.cos_params[%d].bw_tbl %x\n",
1066                    cos, bp->dcbx_port_params.ets.cos_params[cos].bw_tbl);
1067
1068                 DP(BNX2X_MSG_DCB,
1069                    "pdev->params.dcbx_port_params.ets.cos_params[%d].strict %x\n",
1070                    cos, bp->dcbx_port_params.ets.cos_params[cos].strict);
1071
1072                 DP(BNX2X_MSG_DCB,
1073                    "pdev->params.dcbx_port_params.ets.cos_params[%d].pauseable %x\n",
1074                    cos, bp->dcbx_port_params.ets.cos_params[cos].pauseable);
1075         }
1076
1077         for (pri = 0; pri < LLFC_DRIVER_TRAFFIC_TYPE_MAX; pri++) {
1078                 DP(BNX2X_MSG_DCB,
1079                    "pfc_fw_cfg->traffic_type_to_priority_cos[%d].priority %x\n",
1080                    pri, pfc_fw_cfg->traffic_type_to_priority_cos[pri].priority);
1081
1082                 DP(BNX2X_MSG_DCB,
1083                    "pfc_fw_cfg->traffic_type_to_priority_cos[%d].cos %x\n",
1084                    pri, pfc_fw_cfg->traffic_type_to_priority_cos[pri].cos);
1085         }
1086 }
1087
1088 /* fills help_data according to pg_info */
1089 static void bnx2x_dcbx_get_num_pg_traf_type(struct bnx2x *bp,
1090                                             u32 *pg_pri_orginal_spread,
1091                                             struct pg_help_data *help_data)
1092 {
1093         bool pg_found  = false;
1094         u32 i, traf_type, add_traf_type, add_pg;
1095         u32 *ttp = bp->dcbx_port_params.app.traffic_type_priority;
1096         struct pg_entry_help_data *data = help_data->data; /*shortcut*/
1097
1098         /* Set to invalid */
1099         for (i = 0; i < LLFC_DRIVER_TRAFFIC_TYPE_MAX; i++)
1100                 data[i].pg = DCBX_ILLEGAL_PG;
1101
1102         for (add_traf_type = 0;
1103              add_traf_type < LLFC_DRIVER_TRAFFIC_TYPE_MAX; add_traf_type++) {
1104                 pg_found = false;
1105                 if (ttp[add_traf_type] < MAX_PFC_PRIORITIES) {
1106                         add_pg = (u8)pg_pri_orginal_spread[ttp[add_traf_type]];
1107                         for (traf_type = 0;
1108                              traf_type < LLFC_DRIVER_TRAFFIC_TYPE_MAX;
1109                              traf_type++) {
1110                                 if (data[traf_type].pg == add_pg) {
1111                                         if (!(data[traf_type].pg_priority &
1112                                              (1 << ttp[add_traf_type])))
1113                                                 data[traf_type].
1114                                                         num_of_dif_pri++;
1115                                         data[traf_type].pg_priority |=
1116                                                 (1 << ttp[add_traf_type]);
1117                                         pg_found = true;
1118                                         break;
1119                                 }
1120                         }
1121                         if (false == pg_found) {
1122                                 data[help_data->num_of_pg].pg = add_pg;
1123                                 data[help_data->num_of_pg].pg_priority =
1124                                                 (1 << ttp[add_traf_type]);
1125                                 data[help_data->num_of_pg].num_of_dif_pri = 1;
1126                                 help_data->num_of_pg++;
1127                         }
1128                 }
1129                 DP(BNX2X_MSG_DCB,
1130                    "add_traf_type %d pg_found %s num_of_pg %d\n",
1131                    add_traf_type, (false == pg_found) ? "NO" : "YES",
1132                    help_data->num_of_pg);
1133         }
1134 }
1135
1136 static void bnx2x_dcbx_ets_disabled_entry_data(struct bnx2x *bp,
1137                                                struct cos_help_data *cos_data,
1138                                                u32 pri_join_mask)
1139 {
1140         /* Only one priority than only one COS */
1141         cos_data->data[0].pausable =
1142                 IS_DCBX_PFC_PRI_ONLY_PAUSE(bp, pri_join_mask);
1143         cos_data->data[0].pri_join_mask = pri_join_mask;
1144         cos_data->data[0].cos_bw = 100;
1145         cos_data->num_of_cos = 1;
1146 }
1147
1148 static inline void bnx2x_dcbx_add_to_cos_bw(struct bnx2x *bp,
1149                                             struct cos_entry_help_data *data,
1150                                             u8 pg_bw)
1151 {
1152         if (data->cos_bw == DCBX_INVALID_COS_BW)
1153                 data->cos_bw = pg_bw;
1154         else
1155                 data->cos_bw += pg_bw;
1156 }
1157
1158 static void bnx2x_dcbx_separate_pauseable_from_non(struct bnx2x *bp,
1159                         struct cos_help_data *cos_data,
1160                         u32 *pg_pri_orginal_spread,
1161                         struct dcbx_ets_feature *ets)
1162 {
1163         u32     pri_tested      = 0;
1164         u8      i               = 0;
1165         u8      entry           = 0;
1166         u8      pg_entry        = 0;
1167         u8      num_of_pri      = LLFC_DRIVER_TRAFFIC_TYPE_MAX;
1168
1169         cos_data->data[0].pausable = true;
1170         cos_data->data[1].pausable = false;
1171         cos_data->data[0].pri_join_mask = cos_data->data[1].pri_join_mask = 0;
1172
1173         for (i = 0 ; i < num_of_pri ; i++) {
1174                 pri_tested = 1 << bp->dcbx_port_params.
1175                                         app.traffic_type_priority[i];
1176
1177                 if (pri_tested & DCBX_PFC_PRI_NON_PAUSE_MASK(bp)) {
1178                         cos_data->data[1].pri_join_mask |= pri_tested;
1179                         entry = 1;
1180                 } else {
1181                         cos_data->data[0].pri_join_mask |= pri_tested;
1182                         entry = 0;
1183                 }
1184                 pg_entry = (u8)pg_pri_orginal_spread[bp->dcbx_port_params.
1185                                                 app.traffic_type_priority[i]];
1186                 /* There can be only one strict pg */
1187                 if (pg_entry < DCBX_MAX_NUM_PG_BW_ENTRIES)
1188                         bnx2x_dcbx_add_to_cos_bw(bp, &cos_data->data[entry],
1189                                 DCBX_PG_BW_GET(ets->pg_bw_tbl, pg_entry));
1190                 else
1191                         /* If we join a group and one is strict
1192                          * than the bw rules
1193                          */
1194                         cos_data->data[entry].strict =
1195                                                 BNX2X_DCBX_STRICT_COS_HIGHEST;
1196         }
1197         if ((0 == cos_data->data[0].pri_join_mask) &&
1198             (0 == cos_data->data[1].pri_join_mask))
1199                 BNX2X_ERR("dcbx error: Both groups must have priorities\n");
1200 }
1201
1202 #ifndef POWER_OF_2
1203 #define POWER_OF_2(x)   ((0 != x) && (0 == (x & (x-1))))
1204 #endif
1205
1206 static void bnx2x_dcbx_2cos_limit_cee_single_pg_to_cos_params(struct bnx2x *bp,
1207                                               struct pg_help_data *pg_help_data,
1208                                               struct cos_help_data *cos_data,
1209                                               u32 pri_join_mask,
1210                                               u8 num_of_dif_pri)
1211 {
1212         u8 i = 0;
1213         u32 pri_tested = 0;
1214         u32 pri_mask_without_pri = 0;
1215         u32 *ttp = bp->dcbx_port_params.app.traffic_type_priority;
1216         /*debug*/
1217         if (num_of_dif_pri == 1) {
1218                 bnx2x_dcbx_ets_disabled_entry_data(bp, cos_data, pri_join_mask);
1219                 return;
1220         }
1221         /* single priority group */
1222         if (pg_help_data->data[0].pg < DCBX_MAX_NUM_PG_BW_ENTRIES) {
1223                 /* If there are both pauseable and non-pauseable priorities,
1224                  * the pauseable priorities go to the first queue and
1225                  * the non-pauseable priorities go to the second queue.
1226                  */
1227                 if (IS_DCBX_PFC_PRI_MIX_PAUSE(bp, pri_join_mask)) {
1228                         /* Pauseable */
1229                         cos_data->data[0].pausable = true;
1230                         /* Non pauseable.*/
1231                         cos_data->data[1].pausable = false;
1232
1233                         if (2 == num_of_dif_pri) {
1234                                 cos_data->data[0].cos_bw = 50;
1235                                 cos_data->data[1].cos_bw = 50;
1236                         }
1237
1238                         if (3 == num_of_dif_pri) {
1239                                 if (POWER_OF_2(DCBX_PFC_PRI_GET_PAUSE(bp,
1240                                                         pri_join_mask))) {
1241                                         cos_data->data[0].cos_bw = 33;
1242                                         cos_data->data[1].cos_bw = 67;
1243                                 } else {
1244                                         cos_data->data[0].cos_bw = 67;
1245                                         cos_data->data[1].cos_bw = 33;
1246                                 }
1247                         }
1248
1249                 } else if (IS_DCBX_PFC_PRI_ONLY_PAUSE(bp, pri_join_mask)) {
1250                         /* If there are only pauseable priorities,
1251                          * then one/two priorities go to the first queue
1252                          * and one priority goes to the second queue.
1253                          */
1254                         if (2 == num_of_dif_pri) {
1255                                 cos_data->data[0].cos_bw = 50;
1256                                 cos_data->data[1].cos_bw = 50;
1257                         } else {
1258                                 cos_data->data[0].cos_bw = 67;
1259                                 cos_data->data[1].cos_bw = 33;
1260                         }
1261                         cos_data->data[1].pausable = true;
1262                         cos_data->data[0].pausable = true;
1263                         /* All priorities except FCOE */
1264                         cos_data->data[0].pri_join_mask = (pri_join_mask &
1265                                 ((u8)~(1 << ttp[LLFC_TRAFFIC_TYPE_FCOE])));
1266                         /* Only FCOE priority.*/
1267                         cos_data->data[1].pri_join_mask =
1268                                 (1 << ttp[LLFC_TRAFFIC_TYPE_FCOE]);
1269                 } else
1270                         /* If there are only non-pauseable priorities,
1271                          * they will all go to the same queue.
1272                          */
1273                         bnx2x_dcbx_ets_disabled_entry_data(bp,
1274                                                 cos_data, pri_join_mask);
1275         } else {
1276                 /* priority group which is not BW limited (PG#15):*/
1277                 if (IS_DCBX_PFC_PRI_MIX_PAUSE(bp, pri_join_mask)) {
1278                         /* If there are both pauseable and non-pauseable
1279                          * priorities, the pauseable priorities go to the first
1280                          * queue and the non-pauseable priorities
1281                          * go to the second queue.
1282                          */
1283                         if (DCBX_PFC_PRI_GET_PAUSE(bp, pri_join_mask) >
1284                             DCBX_PFC_PRI_GET_NON_PAUSE(bp, pri_join_mask)) {
1285                                 cos_data->data[0].strict =
1286                                         BNX2X_DCBX_STRICT_COS_HIGHEST;
1287                                 cos_data->data[1].strict =
1288                                         BNX2X_DCBX_STRICT_COS_NEXT_LOWER_PRI(
1289                                                 BNX2X_DCBX_STRICT_COS_HIGHEST);
1290                         } else {
1291                                 cos_data->data[0].strict =
1292                                         BNX2X_DCBX_STRICT_COS_NEXT_LOWER_PRI(
1293                                                 BNX2X_DCBX_STRICT_COS_HIGHEST);
1294                                 cos_data->data[1].strict =
1295                                         BNX2X_DCBX_STRICT_COS_HIGHEST;
1296                         }
1297                         /* Pauseable */
1298                         cos_data->data[0].pausable = true;
1299                         /* Non pause-able.*/
1300                         cos_data->data[1].pausable = false;
1301                 } else {
1302                         /* If there are only pauseable priorities or
1303                          * only non-pauseable,* the lower priorities go
1304                          * to the first queue and the higher priorities go
1305                          * to the second queue.
1306                          */
1307                         cos_data->data[0].pausable =
1308                                 cos_data->data[1].pausable =
1309                                 IS_DCBX_PFC_PRI_ONLY_PAUSE(bp, pri_join_mask);
1310
1311                         for (i = 0 ; i < LLFC_DRIVER_TRAFFIC_TYPE_MAX; i++) {
1312                                 pri_tested = 1 << bp->dcbx_port_params.
1313                                         app.traffic_type_priority[i];
1314                                 /* Remove priority tested */
1315                                 pri_mask_without_pri =
1316                                         (pri_join_mask & ((u8)(~pri_tested)));
1317                                 if (pri_mask_without_pri < pri_tested)
1318                                         break;
1319                         }
1320
1321                         if (i == LLFC_DRIVER_TRAFFIC_TYPE_MAX)
1322                                 BNX2X_ERR("Invalid value for pri_join_mask - could not find a priority\n");
1323
1324                         cos_data->data[0].pri_join_mask = pri_mask_without_pri;
1325                         cos_data->data[1].pri_join_mask = pri_tested;
1326                         /* Both queues are strict priority,
1327                          * and that with the highest priority
1328                          * gets the highest strict priority in the arbiter.
1329                          */
1330                         cos_data->data[0].strict =
1331                                         BNX2X_DCBX_STRICT_COS_NEXT_LOWER_PRI(
1332                                                 BNX2X_DCBX_STRICT_COS_HIGHEST);
1333                         cos_data->data[1].strict =
1334                                         BNX2X_DCBX_STRICT_COS_HIGHEST;
1335                 }
1336         }
1337 }
1338
1339 static void bnx2x_dcbx_2cos_limit_cee_two_pg_to_cos_params(
1340                             struct bnx2x                *bp,
1341                             struct  pg_help_data        *pg_help_data,
1342                             struct dcbx_ets_feature     *ets,
1343                             struct cos_help_data        *cos_data,
1344                             u32                 *pg_pri_orginal_spread,
1345                             u32                         pri_join_mask,
1346                             u8                          num_of_dif_pri)
1347 {
1348         u8 i = 0;
1349         u8 pg[DCBX_COS_MAX_NUM_E2] = { 0 };
1350
1351         /* If there are both pauseable and non-pauseable priorities,
1352          * the pauseable priorities go to the first queue and
1353          * the non-pauseable priorities go to the second queue.
1354          */
1355         if (IS_DCBX_PFC_PRI_MIX_PAUSE(bp, pri_join_mask)) {
1356                 if (IS_DCBX_PFC_PRI_MIX_PAUSE(bp,
1357                                          pg_help_data->data[0].pg_priority) ||
1358                     IS_DCBX_PFC_PRI_MIX_PAUSE(bp,
1359                                          pg_help_data->data[1].pg_priority)) {
1360                         /* If one PG contains both pauseable and
1361                          * non-pauseable priorities then ETS is disabled.
1362                          */
1363                         bnx2x_dcbx_separate_pauseable_from_non(bp, cos_data,
1364                                         pg_pri_orginal_spread, ets);
1365                         bp->dcbx_port_params.ets.enabled = false;
1366                         return;
1367                 }
1368
1369                 /* Pauseable */
1370                 cos_data->data[0].pausable = true;
1371                 /* Non pauseable. */
1372                 cos_data->data[1].pausable = false;
1373                 if (IS_DCBX_PFC_PRI_ONLY_PAUSE(bp,
1374                                 pg_help_data->data[0].pg_priority)) {
1375                         /* 0 is pauseable */
1376                         cos_data->data[0].pri_join_mask =
1377                                 pg_help_data->data[0].pg_priority;
1378                         pg[0] = pg_help_data->data[0].pg;
1379                         cos_data->data[1].pri_join_mask =
1380                                 pg_help_data->data[1].pg_priority;
1381                         pg[1] = pg_help_data->data[1].pg;
1382                 } else {/* 1 is pauseable */
1383                         cos_data->data[0].pri_join_mask =
1384                                 pg_help_data->data[1].pg_priority;
1385                         pg[0] = pg_help_data->data[1].pg;
1386                         cos_data->data[1].pri_join_mask =
1387                                 pg_help_data->data[0].pg_priority;
1388                         pg[1] = pg_help_data->data[0].pg;
1389                 }
1390         } else {
1391                 /* If there are only pauseable priorities or
1392                  * only non-pauseable, each PG goes to a queue.
1393                  */
1394                 cos_data->data[0].pausable = cos_data->data[1].pausable =
1395                         IS_DCBX_PFC_PRI_ONLY_PAUSE(bp, pri_join_mask);
1396                 cos_data->data[0].pri_join_mask =
1397                         pg_help_data->data[0].pg_priority;
1398                 pg[0] = pg_help_data->data[0].pg;
1399                 cos_data->data[1].pri_join_mask =
1400                         pg_help_data->data[1].pg_priority;
1401                 pg[1] = pg_help_data->data[1].pg;
1402         }
1403
1404         /* There can be only one strict pg */
1405         for (i = 0 ; i < ARRAY_SIZE(pg); i++) {
1406                 if (pg[i] < DCBX_MAX_NUM_PG_BW_ENTRIES)
1407                         cos_data->data[i].cos_bw =
1408                                 DCBX_PG_BW_GET(ets->pg_bw_tbl, pg[i]);
1409                 else
1410                         cos_data->data[i].strict =
1411                                                 BNX2X_DCBX_STRICT_COS_HIGHEST;
1412         }
1413 }
1414
1415 static int bnx2x_dcbx_join_pgs(
1416                               struct bnx2x            *bp,
1417                               struct dcbx_ets_feature *ets,
1418                               struct pg_help_data     *pg_help_data,
1419                               u8                      required_num_of_pg)
1420 {
1421         u8 entry_joined    = pg_help_data->num_of_pg - 1;
1422         u8 entry_removed   = entry_joined + 1;
1423         u8 pg_joined       = 0;
1424
1425         if (required_num_of_pg == 0 || ARRAY_SIZE(pg_help_data->data)
1426                                                 <= pg_help_data->num_of_pg) {
1427
1428                 BNX2X_ERR("required_num_of_pg can't be zero\n");
1429                 return -EINVAL;
1430         }
1431
1432         while (required_num_of_pg < pg_help_data->num_of_pg) {
1433                 entry_joined = pg_help_data->num_of_pg - 2;
1434                 entry_removed = entry_joined + 1;
1435                 /* protect index */
1436                 entry_removed %= ARRAY_SIZE(pg_help_data->data);
1437
1438                 pg_help_data->data[entry_joined].pg_priority |=
1439                         pg_help_data->data[entry_removed].pg_priority;
1440
1441                 pg_help_data->data[entry_joined].num_of_dif_pri +=
1442                         pg_help_data->data[entry_removed].num_of_dif_pri;
1443
1444                 if (pg_help_data->data[entry_joined].pg == DCBX_STRICT_PRI_PG ||
1445                     pg_help_data->data[entry_removed].pg == DCBX_STRICT_PRI_PG)
1446                         /* Entries joined strict priority rules */
1447                         pg_help_data->data[entry_joined].pg =
1448                                                         DCBX_STRICT_PRI_PG;
1449                 else {
1450                         /* Entries can be joined join BW */
1451                         pg_joined = DCBX_PG_BW_GET(ets->pg_bw_tbl,
1452                                         pg_help_data->data[entry_joined].pg) +
1453                                     DCBX_PG_BW_GET(ets->pg_bw_tbl,
1454                                         pg_help_data->data[entry_removed].pg);
1455
1456                         DCBX_PG_BW_SET(ets->pg_bw_tbl,
1457                                 pg_help_data->data[entry_joined].pg, pg_joined);
1458                 }
1459                 /* Joined the entries */
1460                 pg_help_data->num_of_pg--;
1461         }
1462
1463         return 0;
1464 }
1465
1466 static void bnx2x_dcbx_2cos_limit_cee_three_pg_to_cos_params(
1467                               struct bnx2x              *bp,
1468                               struct pg_help_data       *pg_help_data,
1469                               struct dcbx_ets_feature   *ets,
1470                               struct cos_help_data      *cos_data,
1471                               u32                       *pg_pri_orginal_spread,
1472                               u32                       pri_join_mask,
1473                               u8                        num_of_dif_pri)
1474 {
1475         u8 i = 0;
1476         u32 pri_tested = 0;
1477         u8 entry = 0;
1478         u8 pg_entry = 0;
1479         bool b_found_strict = false;
1480         u8 num_of_pri = LLFC_DRIVER_TRAFFIC_TYPE_MAX;
1481
1482         cos_data->data[0].pri_join_mask = cos_data->data[1].pri_join_mask = 0;
1483         /* If there are both pauseable and non-pauseable priorities,
1484          * the pauseable priorities go to the first queue and the
1485          * non-pauseable priorities go to the second queue.
1486          */
1487         if (IS_DCBX_PFC_PRI_MIX_PAUSE(bp, pri_join_mask))
1488                 bnx2x_dcbx_separate_pauseable_from_non(bp,
1489                                 cos_data, pg_pri_orginal_spread, ets);
1490         else {
1491                 /* If two BW-limited PG-s were combined to one queue,
1492                  * the BW is their sum.
1493                  *
1494                  * If there are only pauseable priorities or only non-pauseable,
1495                  * and there are both BW-limited and non-BW-limited PG-s,
1496                  * the BW-limited PG/s go to one queue and the non-BW-limited
1497                  * PG/s go to the second queue.
1498                  *
1499                  * If there are only pauseable priorities or only non-pauseable
1500                  * and all are BW limited, then two priorities go to the first
1501                  * queue and one priority goes to the second queue.
1502                  *
1503                  * We will join this two cases:
1504                  * if one is BW limited it will go to the second queue
1505                  * otherwise the last priority will get it
1506                  */
1507
1508                 cos_data->data[0].pausable = cos_data->data[1].pausable =
1509                         IS_DCBX_PFC_PRI_ONLY_PAUSE(bp, pri_join_mask);
1510
1511                 for (i = 0 ; i < num_of_pri; i++) {
1512                         pri_tested = 1 << bp->dcbx_port_params.
1513                                 app.traffic_type_priority[i];
1514                         pg_entry = (u8)pg_pri_orginal_spread[bp->
1515                                 dcbx_port_params.app.traffic_type_priority[i]];
1516
1517                         if (pg_entry < DCBX_MAX_NUM_PG_BW_ENTRIES) {
1518                                 entry = 0;
1519
1520                                 if (i == (num_of_pri-1) &&
1521                                     false == b_found_strict)
1522                                         /* last entry will be handled separately
1523                                          * If no priority is strict than last
1524                                          * entry goes to last queue.
1525                                          */
1526                                         entry = 1;
1527                                 cos_data->data[entry].pri_join_mask |=
1528                                                                 pri_tested;
1529                                 bnx2x_dcbx_add_to_cos_bw(bp,
1530                                         &cos_data->data[entry],
1531                                         DCBX_PG_BW_GET(ets->pg_bw_tbl,
1532                                                        pg_entry));
1533                         } else {
1534                                 b_found_strict = true;
1535                                 cos_data->data[1].pri_join_mask |= pri_tested;
1536                                 /* If we join a group and one is strict
1537                                  * than the bw rules
1538                                  */
1539                                 cos_data->data[1].strict =
1540                                         BNX2X_DCBX_STRICT_COS_HIGHEST;
1541                         }
1542                 }
1543         }
1544 }
1545
1546 static void bnx2x_dcbx_2cos_limit_cee_fill_cos_params(struct bnx2x *bp,
1547                                        struct pg_help_data *help_data,
1548                                        struct dcbx_ets_feature *ets,
1549                                        struct cos_help_data *cos_data,
1550                                        u32 *pg_pri_orginal_spread,
1551                                        u32 pri_join_mask,
1552                                        u8 num_of_dif_pri)
1553 {
1554         /* default E2 settings */
1555         cos_data->num_of_cos = DCBX_COS_MAX_NUM_E2;
1556
1557         switch (help_data->num_of_pg) {
1558         case 1:
1559                 bnx2x_dcbx_2cos_limit_cee_single_pg_to_cos_params(
1560                                                bp,
1561                                                help_data,
1562                                                cos_data,
1563                                                pri_join_mask,
1564                                                num_of_dif_pri);
1565                 break;
1566         case 2:
1567                 bnx2x_dcbx_2cos_limit_cee_two_pg_to_cos_params(
1568                                             bp,
1569                                             help_data,
1570                                             ets,
1571                                             cos_data,
1572                                             pg_pri_orginal_spread,
1573                                             pri_join_mask,
1574                                             num_of_dif_pri);
1575                 break;
1576
1577         case 3:
1578                 bnx2x_dcbx_2cos_limit_cee_three_pg_to_cos_params(
1579                                               bp,
1580                                               help_data,
1581                                               ets,
1582                                               cos_data,
1583                                               pg_pri_orginal_spread,
1584                                               pri_join_mask,
1585                                               num_of_dif_pri);
1586                 break;
1587         default:
1588                 BNX2X_ERR("Wrong pg_help_data.num_of_pg\n");
1589                 bnx2x_dcbx_ets_disabled_entry_data(bp,
1590                                                    cos_data, pri_join_mask);
1591         }
1592 }
1593
1594 static int bnx2x_dcbx_spread_strict_pri(struct bnx2x *bp,
1595                                         struct cos_help_data *cos_data,
1596                                         u8 entry,
1597                                         u8 num_spread_of_entries,
1598                                         u8 strict_app_pris)
1599 {
1600         u8 strict_pri = BNX2X_DCBX_STRICT_COS_HIGHEST;
1601         u8 num_of_app_pri = MAX_PFC_PRIORITIES;
1602         u8 app_pri_bit = 0;
1603
1604         while (num_spread_of_entries && num_of_app_pri > 0) {
1605                 app_pri_bit = 1 << (num_of_app_pri - 1);
1606                 if (app_pri_bit & strict_app_pris) {
1607                         struct cos_entry_help_data *data = &cos_data->
1608                                                                 data[entry];
1609                         num_spread_of_entries--;
1610                         if (num_spread_of_entries == 0) {
1611                                 /* last entry needed put all the entries left */
1612                                 data->cos_bw = DCBX_INVALID_COS_BW;
1613                                 data->strict = strict_pri;
1614                                 data->pri_join_mask = strict_app_pris;
1615                                 data->pausable = DCBX_IS_PFC_PRI_SOME_PAUSE(bp,
1616                                                         data->pri_join_mask);
1617                         } else {
1618                                 strict_app_pris &= ~app_pri_bit;
1619
1620                                 data->cos_bw = DCBX_INVALID_COS_BW;
1621                                 data->strict = strict_pri;
1622                                 data->pri_join_mask = app_pri_bit;
1623                                 data->pausable = DCBX_IS_PFC_PRI_SOME_PAUSE(bp,
1624                                                         data->pri_join_mask);
1625                         }
1626
1627                         strict_pri =
1628                             BNX2X_DCBX_STRICT_COS_NEXT_LOWER_PRI(strict_pri);
1629                         entry++;
1630                 }
1631
1632                 num_of_app_pri--;
1633         }
1634
1635         if (num_spread_of_entries) {
1636                 BNX2X_ERR("Didn't succeed to spread strict priorities\n");
1637                 return -EINVAL;
1638         }
1639
1640         return 0;
1641 }
1642
1643 static u8 bnx2x_dcbx_cee_fill_strict_pri(struct bnx2x *bp,
1644                                          struct cos_help_data *cos_data,
1645                                          u8 entry,
1646                                          u8 num_spread_of_entries,
1647                                          u8 strict_app_pris)
1648 {
1649         if (bnx2x_dcbx_spread_strict_pri(bp, cos_data, entry,
1650                                          num_spread_of_entries,
1651                                          strict_app_pris)) {
1652                 struct cos_entry_help_data *data = &cos_data->
1653                                                     data[entry];
1654                 /* Fill BW entry */
1655                 data->cos_bw = DCBX_INVALID_COS_BW;
1656                 data->strict = BNX2X_DCBX_STRICT_COS_HIGHEST;
1657                 data->pri_join_mask = strict_app_pris;
1658                 data->pausable = DCBX_IS_PFC_PRI_SOME_PAUSE(bp,
1659                                  data->pri_join_mask);
1660                 return 1;
1661         }
1662
1663         return num_spread_of_entries;
1664 }
1665
1666 static void bnx2x_dcbx_cee_fill_cos_params(struct bnx2x *bp,
1667                                            struct pg_help_data *help_data,
1668                                            struct dcbx_ets_feature *ets,
1669                                            struct cos_help_data *cos_data,
1670                                            u32 pri_join_mask)
1671
1672 {
1673         u8 need_num_of_entries = 0;
1674         u8 i = 0;
1675         u8 entry = 0;
1676
1677         /*
1678          * if the number of requested PG-s in CEE is greater than 3
1679          * then the results are not determined since this is a violation
1680          * of the standard.
1681          */
1682         if (help_data->num_of_pg > DCBX_COS_MAX_NUM_E3B0) {
1683                 if (bnx2x_dcbx_join_pgs(bp, ets, help_data,
1684                                         DCBX_COS_MAX_NUM_E3B0)) {
1685                         BNX2X_ERR("Unable to reduce the number of PGs - we will disables ETS\n");
1686                         bnx2x_dcbx_ets_disabled_entry_data(bp, cos_data,
1687                                                            pri_join_mask);
1688                         return;
1689                 }
1690         }
1691
1692         for (i = 0 ; i < help_data->num_of_pg; i++) {
1693                 struct pg_entry_help_data *pg =  &help_data->data[i];
1694                 if (pg->pg < DCBX_MAX_NUM_PG_BW_ENTRIES) {
1695                         struct cos_entry_help_data *data = &cos_data->
1696                                                             data[entry];
1697                         /* Fill BW entry */
1698                         data->cos_bw = DCBX_PG_BW_GET(ets->pg_bw_tbl, pg->pg);
1699                         data->strict = BNX2X_DCBX_STRICT_INVALID;
1700                         data->pri_join_mask = pg->pg_priority;
1701                         data->pausable = DCBX_IS_PFC_PRI_SOME_PAUSE(bp,
1702                                                 data->pri_join_mask);
1703
1704                         entry++;
1705                 } else {
1706                         need_num_of_entries =  min_t(u8,
1707                                 (u8)pg->num_of_dif_pri,
1708                                 (u8)DCBX_COS_MAX_NUM_E3B0 -
1709                                                  help_data->num_of_pg + 1);
1710                         /*
1711                          * If there are still VOQ-s which have no associated PG,
1712                          * then associate these VOQ-s to PG15. These PG-s will
1713                          * be used for SP between priorities on PG15.
1714                          */
1715                         entry += bnx2x_dcbx_cee_fill_strict_pri(bp, cos_data,
1716                                 entry, need_num_of_entries, pg->pg_priority);
1717                 }
1718         }
1719
1720         /* the entry will represent the number of COSes used */
1721         cos_data->num_of_cos = entry;
1722 }
1723 static void bnx2x_dcbx_fill_cos_params(struct bnx2x *bp,
1724                                        struct pg_help_data *help_data,
1725                                        struct dcbx_ets_feature *ets,
1726                                        u32 *pg_pri_orginal_spread)
1727 {
1728         struct cos_help_data         cos_data;
1729         u8                    i                           = 0;
1730         u32                   pri_join_mask               = 0;
1731         u8                    num_of_dif_pri              = 0;
1732
1733         memset(&cos_data, 0, sizeof(cos_data));
1734
1735         /* Validate the pg value */
1736         for (i = 0; i < help_data->num_of_pg ; i++) {
1737                 if (DCBX_STRICT_PRIORITY != help_data->data[i].pg &&
1738                     DCBX_MAX_NUM_PG_BW_ENTRIES <= help_data->data[i].pg)
1739                         BNX2X_ERR("Invalid pg[%d] data %x\n", i,
1740                                   help_data->data[i].pg);
1741                 pri_join_mask   |=  help_data->data[i].pg_priority;
1742                 num_of_dif_pri  += help_data->data[i].num_of_dif_pri;
1743         }
1744
1745         /* defaults */
1746         cos_data.num_of_cos = 1;
1747         for (i = 0; i < ARRAY_SIZE(cos_data.data); i++) {
1748                 cos_data.data[i].pri_join_mask = 0;
1749                 cos_data.data[i].pausable = false;
1750                 cos_data.data[i].strict = BNX2X_DCBX_STRICT_INVALID;
1751                 cos_data.data[i].cos_bw = DCBX_INVALID_COS_BW;
1752         }
1753
1754         if (CHIP_IS_E3B0(bp))
1755                 bnx2x_dcbx_cee_fill_cos_params(bp, help_data, ets,
1756                                                &cos_data, pri_join_mask);
1757         else /* E2 + E3A0 */
1758                 bnx2x_dcbx_2cos_limit_cee_fill_cos_params(bp,
1759                                                           help_data, ets,
1760                                                           &cos_data,
1761                                                           pg_pri_orginal_spread,
1762                                                           pri_join_mask,
1763                                                           num_of_dif_pri);
1764
1765         for (i = 0; i < cos_data.num_of_cos ; i++) {
1766                 struct bnx2x_dcbx_cos_params *p =
1767                         &bp->dcbx_port_params.ets.cos_params[i];
1768
1769                 p->strict = cos_data.data[i].strict;
1770                 p->bw_tbl = cos_data.data[i].cos_bw;
1771                 p->pri_bitmask = cos_data.data[i].pri_join_mask;
1772                 p->pauseable = cos_data.data[i].pausable;
1773
1774                 /* sanity */
1775                 if (p->bw_tbl != DCBX_INVALID_COS_BW ||
1776                     p->strict != BNX2X_DCBX_STRICT_INVALID) {
1777                         if (p->pri_bitmask == 0)
1778                                 BNX2X_ERR("Invalid pri_bitmask for %d\n", i);
1779
1780                         if (CHIP_IS_E2(bp) || CHIP_IS_E3A0(bp)) {
1781
1782                                 if (p->pauseable &&
1783                                     DCBX_PFC_PRI_GET_NON_PAUSE(bp,
1784                                                 p->pri_bitmask) != 0)
1785                                         BNX2X_ERR("Inconsistent config for pausable COS %d\n",
1786                                                   i);
1787
1788                                 if (!p->pauseable &&
1789                                     DCBX_PFC_PRI_GET_PAUSE(bp,
1790                                                 p->pri_bitmask) != 0)
1791                                         BNX2X_ERR("Inconsistent config for nonpausable COS %d\n",
1792                                                   i);
1793                         }
1794                 }
1795
1796                 if (p->pauseable)
1797                         DP(BNX2X_MSG_DCB, "COS %d PAUSABLE prijoinmask 0x%x\n",
1798                                   i, cos_data.data[i].pri_join_mask);
1799                 else
1800                         DP(BNX2X_MSG_DCB,
1801                            "COS %d NONPAUSABLE prijoinmask 0x%x\n",
1802                            i, cos_data.data[i].pri_join_mask);
1803         }
1804
1805         bp->dcbx_port_params.ets.num_of_cos = cos_data.num_of_cos ;
1806 }
1807
1808 static void bnx2x_dcbx_get_ets_pri_pg_tbl(struct bnx2x *bp,
1809                                 u32 *set_configuration_ets_pg,
1810                                 u32 *pri_pg_tbl)
1811 {
1812         int i;
1813
1814         for (i = 0; i < DCBX_MAX_NUM_PRI_PG_ENTRIES; i++) {
1815                 set_configuration_ets_pg[i] = DCBX_PRI_PG_GET(pri_pg_tbl, i);
1816
1817                 DP(BNX2X_MSG_DCB, "set_configuration_ets_pg[%d] = 0x%x\n",
1818                    i, set_configuration_ets_pg[i]);
1819         }
1820 }
1821
1822 static void bnx2x_dcbx_fw_struct(struct bnx2x *bp,
1823                                  struct bnx2x_func_tx_start_params *pfc_fw_cfg)
1824 {
1825         u16 pri_bit = 0;
1826         u8 cos = 0, pri = 0;
1827         struct priority_cos *tt2cos;
1828         u32 *ttp = bp->dcbx_port_params.app.traffic_type_priority;
1829         int mfw_configured = SHMEM2_HAS(bp, drv_flags) &&
1830                              GET_FLAGS(SHMEM2_RD(bp, drv_flags),
1831                                        1 << DRV_FLAGS_DCB_MFW_CONFIGURED);
1832
1833         memset(pfc_fw_cfg, 0, sizeof(*pfc_fw_cfg));
1834
1835         /* to disable DCB - the structure must be zeroed */
1836         if ((bp->dcbx_error & DCBX_REMOTE_MIB_ERROR) && !mfw_configured)
1837                 return;
1838
1839         /*shortcut*/
1840         tt2cos = pfc_fw_cfg->traffic_type_to_priority_cos;
1841
1842         /* Fw version should be incremented each update */
1843         pfc_fw_cfg->dcb_version = ++bp->dcb_version;
1844         pfc_fw_cfg->dcb_enabled = 1;
1845
1846         /* Fill priority parameters */
1847         for (pri = 0; pri < LLFC_DRIVER_TRAFFIC_TYPE_MAX; pri++) {
1848                 tt2cos[pri].priority = ttp[pri];
1849                 pri_bit = 1 << tt2cos[pri].priority;
1850
1851                 /* Fill COS parameters based on COS calculated to
1852                  * make it more general for future use */
1853                 for (cos = 0; cos < bp->dcbx_port_params.ets.num_of_cos; cos++)
1854                         if (bp->dcbx_port_params.ets.cos_params[cos].
1855                                                 pri_bitmask & pri_bit)
1856                                         tt2cos[pri].cos = cos;
1857         }
1858
1859         /* we never want the FW to add a 0 vlan tag */
1860         pfc_fw_cfg->dont_add_pri_0_en = 1;
1861
1862         bnx2x_dcbx_print_cos_params(bp, pfc_fw_cfg);
1863 }
1864
1865 void bnx2x_dcbx_pmf_update(struct bnx2x *bp)
1866 {
1867         /* if we need to synchronize DCBX result from prev PMF
1868          * read it from shmem and update bp and netdev accordingly
1869          */
1870         if (SHMEM2_HAS(bp, drv_flags) &&
1871            GET_FLAGS(SHMEM2_RD(bp, drv_flags), 1 << DRV_FLAGS_DCB_CONFIGURED)) {
1872                 /* Read neg results if dcbx is in the FW */
1873                 if (bnx2x_dcbx_read_shmem_neg_results(bp))
1874                         return;
1875
1876                 bnx2x_dump_dcbx_drv_param(bp, &bp->dcbx_local_feat,
1877                                           bp->dcbx_error);
1878                 bnx2x_get_dcbx_drv_param(bp, &bp->dcbx_local_feat,
1879                                          bp->dcbx_error);
1880 #ifdef BCM_DCBNL
1881                 /*
1882                  * Add new app tlvs to dcbnl
1883                  */
1884                 bnx2x_dcbnl_update_applist(bp, false);
1885                 /*
1886                  * Send a notification for the new negotiated parameters
1887                  */
1888                 dcbnl_cee_notify(bp->dev, RTM_GETDCB, DCB_CMD_CEE_GET, 0, 0);
1889 #endif
1890                 /*
1891                  * reconfigure the netdevice with the results of the new
1892                  * dcbx negotiation.
1893                  */
1894                 bnx2x_dcbx_update_tc_mapping(bp);
1895         }
1896 }
1897
1898 /* DCB netlink */
1899 #ifdef BCM_DCBNL
1900
1901 #define BNX2X_DCBX_CAPS         (DCB_CAP_DCBX_LLD_MANAGED | \
1902                                 DCB_CAP_DCBX_VER_CEE | DCB_CAP_DCBX_STATIC)
1903
1904 static inline bool bnx2x_dcbnl_set_valid(struct bnx2x *bp)
1905 {
1906         /* validate dcbnl call that may change HW state:
1907          * DCB is on and DCBX mode was SUCCESSFULLY set by the user.
1908          */
1909         return bp->dcb_state && bp->dcbx_mode_uset;
1910 }
1911
1912 static u8 bnx2x_dcbnl_get_state(struct net_device *netdev)
1913 {
1914         struct bnx2x *bp = netdev_priv(netdev);
1915         DP(BNX2X_MSG_DCB, "state = %d\n", bp->dcb_state);
1916         return bp->dcb_state;
1917 }
1918
1919 static u8 bnx2x_dcbnl_set_state(struct net_device *netdev, u8 state)
1920 {
1921         struct bnx2x *bp = netdev_priv(netdev);
1922         DP(BNX2X_MSG_DCB, "state = %s\n", state ? "on" : "off");
1923
1924         /* Fail to set state to "enabled" if dcbx is disabled in nvram */
1925         if (state && ((bp->dcbx_enabled == BNX2X_DCBX_ENABLED_OFF) ||
1926                       (bp->dcbx_enabled == BNX2X_DCBX_ENABLED_INVALID))) {
1927                 DP(BNX2X_MSG_DCB, "Can not set dcbx to enabled while it is disabled in nvm\n");
1928                 return 1;
1929         }
1930
1931         bnx2x_dcbx_set_state(bp, (state ? true : false), bp->dcbx_enabled);
1932         return 0;
1933 }
1934
1935 static void bnx2x_dcbnl_get_perm_hw_addr(struct net_device *netdev,
1936                                          u8 *perm_addr)
1937 {
1938         struct bnx2x *bp = netdev_priv(netdev);
1939         DP(BNX2X_MSG_DCB, "GET-PERM-ADDR\n");
1940
1941         /* first the HW mac address */
1942         memcpy(perm_addr, netdev->dev_addr, netdev->addr_len);
1943
1944         if (CNIC_LOADED(bp))
1945                 /* second SAN address */
1946                 memcpy(perm_addr+netdev->addr_len, bp->fip_mac,
1947                        netdev->addr_len);
1948 }
1949
1950 static void bnx2x_dcbnl_set_pg_tccfg_tx(struct net_device *netdev, int prio,
1951                                         u8 prio_type, u8 pgid, u8 bw_pct,
1952                                         u8 up_map)
1953 {
1954         struct bnx2x *bp = netdev_priv(netdev);
1955
1956         DP(BNX2X_MSG_DCB, "prio[%d] = %d\n", prio, pgid);
1957         if (!bnx2x_dcbnl_set_valid(bp) || prio >= DCBX_MAX_NUM_PRI_PG_ENTRIES)
1958                 return;
1959
1960         /**
1961          * bw_pct ignored -     band-width percentage devision between user
1962          *                      priorities within the same group is not
1963          *                      standard and hence not supported
1964          *
1965          * prio_type ignored -  priority levels within the same group are not
1966          *                      standard and hence are not supported. According
1967          *                      to the standard pgid 15 is dedicated to strict
1968          *                      priority traffic (on the port level).
1969          *
1970          * up_map ignored
1971          */
1972
1973         bp->dcbx_config_params.admin_configuration_ets_pg[prio] = pgid;
1974         bp->dcbx_config_params.admin_ets_configuration_tx_enable = 1;
1975 }
1976
1977 static void bnx2x_dcbnl_set_pg_bwgcfg_tx(struct net_device *netdev,
1978                                          int pgid, u8 bw_pct)
1979 {
1980         struct bnx2x *bp = netdev_priv(netdev);
1981         DP(BNX2X_MSG_DCB, "pgid[%d] = %d\n", pgid, bw_pct);
1982
1983         if (!bnx2x_dcbnl_set_valid(bp) || pgid >= DCBX_MAX_NUM_PG_BW_ENTRIES)
1984                 return;
1985
1986         bp->dcbx_config_params.admin_configuration_bw_precentage[pgid] = bw_pct;
1987         bp->dcbx_config_params.admin_ets_configuration_tx_enable = 1;
1988 }
1989
1990 static void bnx2x_dcbnl_set_pg_tccfg_rx(struct net_device *netdev, int prio,
1991                                         u8 prio_type, u8 pgid, u8 bw_pct,
1992                                         u8 up_map)
1993 {
1994         struct bnx2x *bp = netdev_priv(netdev);
1995         DP(BNX2X_MSG_DCB, "Nothing to set; No RX support\n");
1996 }
1997
1998 static void bnx2x_dcbnl_set_pg_bwgcfg_rx(struct net_device *netdev,
1999                                          int pgid, u8 bw_pct)
2000 {
2001         struct bnx2x *bp = netdev_priv(netdev);
2002         DP(BNX2X_MSG_DCB, "Nothing to set; No RX support\n");
2003 }
2004
2005 static void bnx2x_dcbnl_get_pg_tccfg_tx(struct net_device *netdev, int prio,
2006                                         u8 *prio_type, u8 *pgid, u8 *bw_pct,
2007                                         u8 *up_map)
2008 {
2009         struct bnx2x *bp = netdev_priv(netdev);
2010         DP(BNX2X_MSG_DCB, "prio = %d\n", prio);
2011
2012         /**
2013          * bw_pct ignored -     band-width percentage devision between user
2014          *                      priorities within the same group is not
2015          *                      standard and hence not supported
2016          *
2017          * prio_type ignored -  priority levels within the same group are not
2018          *                      standard and hence are not supported. According
2019          *                      to the standard pgid 15 is dedicated to strict
2020          *                      priority traffic (on the port level).
2021          *
2022          * up_map ignored
2023          */
2024         *up_map = *bw_pct = *prio_type = *pgid = 0;
2025
2026         if (!bp->dcb_state || prio >= DCBX_MAX_NUM_PRI_PG_ENTRIES)
2027                 return;
2028
2029         *pgid = DCBX_PRI_PG_GET(bp->dcbx_local_feat.ets.pri_pg_tbl, prio);
2030 }
2031
2032 static void bnx2x_dcbnl_get_pg_bwgcfg_tx(struct net_device *netdev,
2033                                          int pgid, u8 *bw_pct)
2034 {
2035         struct bnx2x *bp = netdev_priv(netdev);
2036         DP(BNX2X_MSG_DCB, "pgid = %d\n", pgid);
2037
2038         *bw_pct = 0;
2039
2040         if (!bp->dcb_state || pgid >= DCBX_MAX_NUM_PG_BW_ENTRIES)
2041                 return;
2042
2043         *bw_pct = DCBX_PG_BW_GET(bp->dcbx_local_feat.ets.pg_bw_tbl, pgid);
2044 }
2045
2046 static void bnx2x_dcbnl_get_pg_tccfg_rx(struct net_device *netdev, int prio,
2047                                         u8 *prio_type, u8 *pgid, u8 *bw_pct,
2048                                         u8 *up_map)
2049 {
2050         struct bnx2x *bp = netdev_priv(netdev);
2051         DP(BNX2X_MSG_DCB, "Nothing to get; No RX support\n");
2052
2053         *prio_type = *pgid = *bw_pct = *up_map = 0;
2054 }
2055
2056 static void bnx2x_dcbnl_get_pg_bwgcfg_rx(struct net_device *netdev,
2057                                          int pgid, u8 *bw_pct)
2058 {
2059         struct bnx2x *bp = netdev_priv(netdev);
2060         DP(BNX2X_MSG_DCB, "Nothing to get; No RX support\n");
2061
2062         *bw_pct = 0;
2063 }
2064
2065 static void bnx2x_dcbnl_set_pfc_cfg(struct net_device *netdev, int prio,
2066                                     u8 setting)
2067 {
2068         struct bnx2x *bp = netdev_priv(netdev);
2069         DP(BNX2X_MSG_DCB, "prio[%d] = %d\n", prio, setting);
2070
2071         if (!bnx2x_dcbnl_set_valid(bp) || prio >= MAX_PFC_PRIORITIES)
2072                 return;
2073
2074         if (setting) {
2075                 bp->dcbx_config_params.admin_pfc_bitmap |= (1 << prio);
2076                 bp->dcbx_config_params.admin_pfc_tx_enable = 1;
2077         } else {
2078                 bp->dcbx_config_params.admin_pfc_bitmap &= ~(1 << prio);
2079         }
2080 }
2081
2082 static void bnx2x_dcbnl_get_pfc_cfg(struct net_device *netdev, int prio,
2083                                     u8 *setting)
2084 {
2085         struct bnx2x *bp = netdev_priv(netdev);
2086         DP(BNX2X_MSG_DCB, "prio = %d\n", prio);
2087
2088         *setting = 0;
2089
2090         if (!bp->dcb_state || prio >= MAX_PFC_PRIORITIES)
2091                 return;
2092
2093         *setting = (bp->dcbx_local_feat.pfc.pri_en_bitmap >> prio) & 0x1;
2094 }
2095
2096 static u8 bnx2x_dcbnl_set_all(struct net_device *netdev)
2097 {
2098         struct bnx2x *bp = netdev_priv(netdev);
2099         int rc = 0;
2100
2101         DP(BNX2X_MSG_DCB, "SET-ALL\n");
2102
2103         if (!bnx2x_dcbnl_set_valid(bp))
2104                 return 1;
2105
2106         if (bp->recovery_state != BNX2X_RECOVERY_DONE) {
2107                 netdev_err(bp->dev,
2108                            "Handling parity error recovery. Try again later\n");
2109                 return 1;
2110         }
2111         if (netif_running(bp->dev)) {
2112                 bnx2x_update_drv_flags(bp,
2113                                        1 << DRV_FLAGS_DCB_MFW_CONFIGURED,
2114                                        1);
2115                 bnx2x_dcbx_init(bp, true);
2116         }
2117         DP(BNX2X_MSG_DCB, "set_dcbx_params done (%d)\n", rc);
2118         if (rc)
2119                 return 1;
2120
2121         return 0;
2122 }
2123
2124 static u8 bnx2x_dcbnl_get_cap(struct net_device *netdev, int capid, u8 *cap)
2125 {
2126         struct bnx2x *bp = netdev_priv(netdev);
2127         u8 rval = 0;
2128
2129         if (bp->dcb_state) {
2130                 switch (capid) {
2131                 case DCB_CAP_ATTR_PG:
2132                         *cap = true;
2133                         break;
2134                 case DCB_CAP_ATTR_PFC:
2135                         *cap = true;
2136                         break;
2137                 case DCB_CAP_ATTR_UP2TC:
2138                         *cap = false;
2139                         break;
2140                 case DCB_CAP_ATTR_PG_TCS:
2141                         *cap = 0x80;    /* 8 priorities for PGs */
2142                         break;
2143                 case DCB_CAP_ATTR_PFC_TCS:
2144                         *cap = 0x80;    /* 8 priorities for PFC */
2145                         break;
2146                 case DCB_CAP_ATTR_GSP:
2147                         *cap = true;
2148                         break;
2149                 case DCB_CAP_ATTR_BCN:
2150                         *cap = false;
2151                         break;
2152                 case DCB_CAP_ATTR_DCBX:
2153                         *cap = BNX2X_DCBX_CAPS;
2154                         break;
2155                 default:
2156                         BNX2X_ERR("Non valid capability ID\n");
2157                         rval = 1;
2158                         break;
2159                 }
2160         } else {
2161                 DP(BNX2X_MSG_DCB, "DCB disabled\n");
2162                 rval = 1;
2163         }
2164
2165         DP(BNX2X_MSG_DCB, "capid %d:%x\n", capid, *cap);
2166         return rval;
2167 }
2168
2169 static int bnx2x_dcbnl_get_numtcs(struct net_device *netdev, int tcid, u8 *num)
2170 {
2171         struct bnx2x *bp = netdev_priv(netdev);
2172         u8 rval = 0;
2173
2174         DP(BNX2X_MSG_DCB, "tcid %d\n", tcid);
2175
2176         if (bp->dcb_state) {
2177                 switch (tcid) {
2178                 case DCB_NUMTCS_ATTR_PG:
2179                         *num = CHIP_IS_E3B0(bp) ? DCBX_COS_MAX_NUM_E3B0 :
2180                                                   DCBX_COS_MAX_NUM_E2;
2181                         break;
2182                 case DCB_NUMTCS_ATTR_PFC:
2183                         *num = CHIP_IS_E3B0(bp) ? DCBX_COS_MAX_NUM_E3B0 :
2184                                                   DCBX_COS_MAX_NUM_E2;
2185                         break;
2186                 default:
2187                         BNX2X_ERR("Non valid TC-ID\n");
2188                         rval = 1;
2189                         break;
2190                 }
2191         } else {
2192                 DP(BNX2X_MSG_DCB, "DCB disabled\n");
2193                 rval = 1;
2194         }
2195
2196         return rval;
2197 }
2198
2199 static int bnx2x_dcbnl_set_numtcs(struct net_device *netdev, int tcid, u8 num)
2200 {
2201         struct bnx2x *bp = netdev_priv(netdev);
2202         DP(BNX2X_MSG_DCB, "num tcs = %d; Not supported\n", num);
2203         return -EINVAL;
2204 }
2205
2206 static u8 bnx2x_dcbnl_get_pfc_state(struct net_device *netdev)
2207 {
2208         struct bnx2x *bp = netdev_priv(netdev);
2209         DP(BNX2X_MSG_DCB, "state = %d\n", bp->dcbx_local_feat.pfc.enabled);
2210
2211         if (!bp->dcb_state)
2212                 return 0;
2213
2214         return bp->dcbx_local_feat.pfc.enabled;
2215 }
2216
2217 static void bnx2x_dcbnl_set_pfc_state(struct net_device *netdev, u8 state)
2218 {
2219         struct bnx2x *bp = netdev_priv(netdev);
2220         DP(BNX2X_MSG_DCB, "state = %s\n", state ? "on" : "off");
2221
2222         if (!bnx2x_dcbnl_set_valid(bp))
2223                 return;
2224
2225         bp->dcbx_config_params.admin_pfc_tx_enable =
2226         bp->dcbx_config_params.admin_pfc_enable = (state ? 1 : 0);
2227 }
2228
2229 static void bnx2x_admin_app_set_ent(
2230         struct bnx2x_admin_priority_app_table *app_ent,
2231         u8 idtype, u16 idval, u8 up)
2232 {
2233         app_ent->valid = 1;
2234
2235         switch (idtype) {
2236         case DCB_APP_IDTYPE_ETHTYPE:
2237                 app_ent->traffic_type = TRAFFIC_TYPE_ETH;
2238                 break;
2239         case DCB_APP_IDTYPE_PORTNUM:
2240                 app_ent->traffic_type = TRAFFIC_TYPE_PORT;
2241                 break;
2242         default:
2243                 break; /* never gets here */
2244         }
2245         app_ent->app_id = idval;
2246         app_ent->priority = up;
2247 }
2248
2249 static bool bnx2x_admin_app_is_equal(
2250         struct bnx2x_admin_priority_app_table *app_ent,
2251         u8 idtype, u16 idval)
2252 {
2253         if (!app_ent->valid)
2254                 return false;
2255
2256         switch (idtype) {
2257         case DCB_APP_IDTYPE_ETHTYPE:
2258                 if (app_ent->traffic_type != TRAFFIC_TYPE_ETH)
2259                         return false;
2260                 break;
2261         case DCB_APP_IDTYPE_PORTNUM:
2262                 if (app_ent->traffic_type != TRAFFIC_TYPE_PORT)
2263                         return false;
2264                 break;
2265         default:
2266                 return false;
2267         }
2268         if (app_ent->app_id != idval)
2269                 return false;
2270
2271         return true;
2272 }
2273
2274 static int bnx2x_set_admin_app_up(struct bnx2x *bp, u8 idtype, u16 idval, u8 up)
2275 {
2276         int i, ff;
2277
2278         /* iterate over the app entries looking for idtype and idval */
2279         for (i = 0, ff = -1; i < DCBX_CONFIG_MAX_APP_PROTOCOL; i++) {
2280                 struct bnx2x_admin_priority_app_table *app_ent =
2281                         &bp->dcbx_config_params.admin_priority_app_table[i];
2282                 if (bnx2x_admin_app_is_equal(app_ent, idtype, idval))
2283                         break;
2284
2285                 if (ff < 0 && !app_ent->valid)
2286                         ff = i;
2287         }
2288         if (i < DCBX_CONFIG_MAX_APP_PROTOCOL)
2289                 /* if found overwrite up */
2290                 bp->dcbx_config_params.
2291                         admin_priority_app_table[i].priority = up;
2292         else if (ff >= 0)
2293                 /* not found use first-free */
2294                 bnx2x_admin_app_set_ent(
2295                         &bp->dcbx_config_params.admin_priority_app_table[ff],
2296                         idtype, idval, up);
2297         else {
2298                 /* app table is full */
2299                 BNX2X_ERR("Application table is too large\n");
2300                 return -EBUSY;
2301         }
2302
2303         /* up configured, if not 0 make sure feature is enabled */
2304         if (up)
2305                 bp->dcbx_config_params.admin_application_priority_tx_enable = 1;
2306
2307         return 0;
2308 }
2309
2310 static u8 bnx2x_dcbnl_set_app_up(struct net_device *netdev, u8 idtype,
2311                                  u16 idval, u8 up)
2312 {
2313         struct bnx2x *bp = netdev_priv(netdev);
2314
2315         DP(BNX2X_MSG_DCB, "app_type %d, app_id %x, prio bitmap %d\n",
2316            idtype, idval, up);
2317
2318         if (!bnx2x_dcbnl_set_valid(bp)) {
2319                 DP(BNX2X_MSG_DCB, "dcbnl call not valid\n");
2320                 return -EINVAL;
2321         }
2322
2323         /* verify idtype */
2324         switch (idtype) {
2325         case DCB_APP_IDTYPE_ETHTYPE:
2326         case DCB_APP_IDTYPE_PORTNUM:
2327                 break;
2328         default:
2329                 DP(BNX2X_MSG_DCB, "Wrong ID type\n");
2330                 return -EINVAL;
2331         }
2332         return bnx2x_set_admin_app_up(bp, idtype, idval, up);
2333 }
2334
2335 static u8 bnx2x_dcbnl_get_dcbx(struct net_device *netdev)
2336 {
2337         struct bnx2x *bp = netdev_priv(netdev);
2338         u8 state;
2339
2340         state = DCB_CAP_DCBX_LLD_MANAGED | DCB_CAP_DCBX_VER_CEE;
2341
2342         if (bp->dcbx_enabled == BNX2X_DCBX_ENABLED_ON_NEG_OFF)
2343                 state |= DCB_CAP_DCBX_STATIC;
2344
2345         return state;
2346 }
2347
2348 static u8 bnx2x_dcbnl_set_dcbx(struct net_device *netdev, u8 state)
2349 {
2350         struct bnx2x *bp = netdev_priv(netdev);
2351         DP(BNX2X_MSG_DCB, "state = %02x\n", state);
2352
2353         /* set dcbx mode */
2354
2355         if ((state & BNX2X_DCBX_CAPS) != state) {
2356                 BNX2X_ERR("Requested DCBX mode %x is beyond advertised capabilities\n",
2357                           state);
2358                 return 1;
2359         }
2360
2361         if (bp->dcb_state != BNX2X_DCB_STATE_ON) {
2362                 BNX2X_ERR("DCB turned off, DCBX configuration is invalid\n");
2363                 return 1;
2364         }
2365
2366         if (state & DCB_CAP_DCBX_STATIC)
2367                 bp->dcbx_enabled = BNX2X_DCBX_ENABLED_ON_NEG_OFF;
2368         else
2369                 bp->dcbx_enabled = BNX2X_DCBX_ENABLED_ON_NEG_ON;
2370
2371         bp->dcbx_mode_uset = true;
2372         return 0;
2373 }
2374
2375 static u8 bnx2x_dcbnl_get_featcfg(struct net_device *netdev, int featid,
2376                                   u8 *flags)
2377 {
2378         struct bnx2x *bp = netdev_priv(netdev);
2379         u8 rval = 0;
2380
2381         DP(BNX2X_MSG_DCB, "featid %d\n", featid);
2382
2383         if (bp->dcb_state) {
2384                 *flags = 0;
2385                 switch (featid) {
2386                 case DCB_FEATCFG_ATTR_PG:
2387                         if (bp->dcbx_local_feat.ets.enabled)
2388                                 *flags |= DCB_FEATCFG_ENABLE;
2389                         if (bp->dcbx_error & (DCBX_LOCAL_ETS_ERROR |
2390                                               DCBX_REMOTE_MIB_ERROR))
2391                                 *flags |= DCB_FEATCFG_ERROR;
2392                         break;
2393                 case DCB_FEATCFG_ATTR_PFC:
2394                         if (bp->dcbx_local_feat.pfc.enabled)
2395                                 *flags |= DCB_FEATCFG_ENABLE;
2396                         if (bp->dcbx_error & (DCBX_LOCAL_PFC_ERROR |
2397                                               DCBX_LOCAL_PFC_MISMATCH |
2398                                               DCBX_REMOTE_MIB_ERROR))
2399                                 *flags |= DCB_FEATCFG_ERROR;
2400                         break;
2401                 case DCB_FEATCFG_ATTR_APP:
2402                         if (bp->dcbx_local_feat.app.enabled)
2403                                 *flags |= DCB_FEATCFG_ENABLE;
2404                         if (bp->dcbx_error & (DCBX_LOCAL_APP_ERROR |
2405                                               DCBX_LOCAL_APP_MISMATCH |
2406                                               DCBX_REMOTE_MIB_ERROR))
2407                                 *flags |= DCB_FEATCFG_ERROR;
2408                         break;
2409                 default:
2410                         BNX2X_ERR("Non valid feature-ID\n");
2411                         rval = 1;
2412                         break;
2413                 }
2414         } else {
2415                 DP(BNX2X_MSG_DCB, "DCB disabled\n");
2416                 rval = 1;
2417         }
2418
2419         return rval;
2420 }
2421
2422 static u8 bnx2x_dcbnl_set_featcfg(struct net_device *netdev, int featid,
2423                                   u8 flags)
2424 {
2425         struct bnx2x *bp = netdev_priv(netdev);
2426         u8 rval = 0;
2427
2428         DP(BNX2X_MSG_DCB, "featid = %d flags = %02x\n", featid, flags);
2429
2430         /* ignore the 'advertise' flag */
2431         if (bnx2x_dcbnl_set_valid(bp)) {
2432                 switch (featid) {
2433                 case DCB_FEATCFG_ATTR_PG:
2434                         bp->dcbx_config_params.admin_ets_enable =
2435                                 flags & DCB_FEATCFG_ENABLE ? 1 : 0;
2436                         bp->dcbx_config_params.admin_ets_willing =
2437                                 flags & DCB_FEATCFG_WILLING ? 1 : 0;
2438                         break;
2439                 case DCB_FEATCFG_ATTR_PFC:
2440                         bp->dcbx_config_params.admin_pfc_enable =
2441                                 flags & DCB_FEATCFG_ENABLE ? 1 : 0;
2442                         bp->dcbx_config_params.admin_pfc_willing =
2443                                 flags & DCB_FEATCFG_WILLING ? 1 : 0;
2444                         break;
2445                 case DCB_FEATCFG_ATTR_APP:
2446                         /* ignore enable, always enabled */
2447                         bp->dcbx_config_params.admin_app_priority_willing =
2448                                 flags & DCB_FEATCFG_WILLING ? 1 : 0;
2449                         break;
2450                 default:
2451                         BNX2X_ERR("Non valid feature-ID\n");
2452                         rval = 1;
2453                         break;
2454                 }
2455         } else {
2456                 DP(BNX2X_MSG_DCB, "dcbnl call not valid\n");
2457                 rval = 1;
2458         }
2459
2460         return rval;
2461 }
2462
2463 static int bnx2x_peer_appinfo(struct net_device *netdev,
2464                               struct dcb_peer_app_info *info, u16* app_count)
2465 {
2466         int i;
2467         struct bnx2x *bp = netdev_priv(netdev);
2468
2469         DP(BNX2X_MSG_DCB, "APP-INFO\n");
2470
2471         info->willing = (bp->dcbx_remote_flags & DCBX_APP_REM_WILLING) ?: 0;
2472         info->error = (bp->dcbx_remote_flags & DCBX_APP_RX_ERROR) ?: 0;
2473         *app_count = 0;
2474
2475         for (i = 0; i < DCBX_MAX_APP_PROTOCOL; i++)
2476                 if (bp->dcbx_remote_feat.app.app_pri_tbl[i].appBitfield &
2477                     DCBX_APP_ENTRY_VALID)
2478                         (*app_count)++;
2479         return 0;
2480 }
2481
2482 static int bnx2x_peer_apptable(struct net_device *netdev,
2483                                struct dcb_app *table)
2484 {
2485         int i, j;
2486         struct bnx2x *bp = netdev_priv(netdev);
2487
2488         DP(BNX2X_MSG_DCB, "APP-TABLE\n");
2489
2490         for (i = 0, j = 0; i < DCBX_MAX_APP_PROTOCOL; i++) {
2491                 struct dcbx_app_priority_entry *ent =
2492                         &bp->dcbx_remote_feat.app.app_pri_tbl[i];
2493
2494                 if (ent->appBitfield & DCBX_APP_ENTRY_VALID) {
2495                         table[j].selector = bnx2x_dcbx_dcbnl_app_idtype(ent);
2496                         table[j].priority = bnx2x_dcbx_dcbnl_app_up(ent);
2497                         table[j++].protocol = ent->app_id;
2498                 }
2499         }
2500         return 0;
2501 }
2502
2503 static int bnx2x_cee_peer_getpg(struct net_device *netdev, struct cee_pg *pg)
2504 {
2505         int i;
2506         struct bnx2x *bp = netdev_priv(netdev);
2507
2508         pg->willing = (bp->dcbx_remote_flags & DCBX_ETS_REM_WILLING) ?: 0;
2509
2510         for (i = 0; i < CEE_DCBX_MAX_PGS; i++) {
2511                 pg->pg_bw[i] =
2512                         DCBX_PG_BW_GET(bp->dcbx_remote_feat.ets.pg_bw_tbl, i);
2513                 pg->prio_pg[i] =
2514                         DCBX_PRI_PG_GET(bp->dcbx_remote_feat.ets.pri_pg_tbl, i);
2515         }
2516         return 0;
2517 }
2518
2519 static int bnx2x_cee_peer_getpfc(struct net_device *netdev,
2520                                  struct cee_pfc *pfc)
2521 {
2522         struct bnx2x *bp = netdev_priv(netdev);
2523         pfc->tcs_supported = bp->dcbx_remote_feat.pfc.pfc_caps;
2524         pfc->pfc_en = bp->dcbx_remote_feat.pfc.pri_en_bitmap;
2525         return 0;
2526 }
2527
2528 const struct dcbnl_rtnl_ops bnx2x_dcbnl_ops = {
2529         .getstate               = bnx2x_dcbnl_get_state,
2530         .setstate               = bnx2x_dcbnl_set_state,
2531         .getpermhwaddr          = bnx2x_dcbnl_get_perm_hw_addr,
2532         .setpgtccfgtx           = bnx2x_dcbnl_set_pg_tccfg_tx,
2533         .setpgbwgcfgtx          = bnx2x_dcbnl_set_pg_bwgcfg_tx,
2534         .setpgtccfgrx           = bnx2x_dcbnl_set_pg_tccfg_rx,
2535         .setpgbwgcfgrx          = bnx2x_dcbnl_set_pg_bwgcfg_rx,
2536         .getpgtccfgtx           = bnx2x_dcbnl_get_pg_tccfg_tx,
2537         .getpgbwgcfgtx          = bnx2x_dcbnl_get_pg_bwgcfg_tx,
2538         .getpgtccfgrx           = bnx2x_dcbnl_get_pg_tccfg_rx,
2539         .getpgbwgcfgrx          = bnx2x_dcbnl_get_pg_bwgcfg_rx,
2540         .setpfccfg              = bnx2x_dcbnl_set_pfc_cfg,
2541         .getpfccfg              = bnx2x_dcbnl_get_pfc_cfg,
2542         .setall                 = bnx2x_dcbnl_set_all,
2543         .getcap                 = bnx2x_dcbnl_get_cap,
2544         .getnumtcs              = bnx2x_dcbnl_get_numtcs,
2545         .setnumtcs              = bnx2x_dcbnl_set_numtcs,
2546         .getpfcstate            = bnx2x_dcbnl_get_pfc_state,
2547         .setpfcstate            = bnx2x_dcbnl_set_pfc_state,
2548         .setapp                 = bnx2x_dcbnl_set_app_up,
2549         .getdcbx                = bnx2x_dcbnl_get_dcbx,
2550         .setdcbx                = bnx2x_dcbnl_set_dcbx,
2551         .getfeatcfg             = bnx2x_dcbnl_get_featcfg,
2552         .setfeatcfg             = bnx2x_dcbnl_set_featcfg,
2553         .peer_getappinfo        = bnx2x_peer_appinfo,
2554         .peer_getapptable       = bnx2x_peer_apptable,
2555         .cee_peer_getpg         = bnx2x_cee_peer_getpg,
2556         .cee_peer_getpfc        = bnx2x_cee_peer_getpfc,
2557 };
2558
2559 #endif /* BCM_DCBNL */