akaros/kern/drivers/net/bnx2x/bnx2x_dcb.c
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   1/* bnx2x_dcb.c: Broadcom Everest network driver.
   2 *
   3 * Copyright 2009-2013 Broadcom Corporation
   4 *
   5 * Unless you and Broadcom execute a separate written software license
   6 * agreement governing use of this software, this software is licensed to you
   7 * under the terms of the GNU General Public License version 2, available
   8 * at http://www.gnu.org/licenses/old-licenses/gpl-2.0.html (the "GPL").
   9 *
  10 * Notwithstanding the above, under no circumstances may you combine this
  11 * software in any way with any other Broadcom software provided under a
  12 * license other than the GPL, without Broadcom's express prior written
  13 * consent.
  14 *
  15 * Maintained by: Ariel Elior <ariel.elior@qlogic.com>
  16 * Written by: Dmitry Kravkov
  17 *
  18 */
  19
  20#include <linux_compat.h>
  21
  22#include "bnx2x.h"
  23#include "bnx2x_cmn.h"
  24#include "bnx2x_dcb.h"
  25
  26/* forward declarations of dcbx related functions */
  27static void bnx2x_pfc_set_pfc(struct bnx2x *bp);
  28static void bnx2x_dcbx_update_ets_params(struct bnx2x *bp);
  29static void bnx2x_dcbx_get_ets_pri_pg_tbl(struct bnx2x *bp,
  30                                          uint32_t *set_configuration_ets_pg,
  31                                          uint32_t *pri_pg_tbl);
  32static void bnx2x_dcbx_get_num_pg_traf_type(struct bnx2x *bp,
  33                                            uint32_t *pg_pri_orginal_spread,
  34                                            struct pg_help_data *help_data);
  35static void bnx2x_dcbx_fill_cos_params(struct bnx2x *bp,
  36                                       struct pg_help_data *help_data,
  37                                       struct dcbx_ets_feature *ets,
  38                                       uint32_t *pg_pri_orginal_spread);
  39static void bnx2x_dcbx_separate_pauseable_from_non(struct bnx2x *bp,
  40                                struct cos_help_data *cos_data,
  41                                uint32_t *pg_pri_orginal_spread,
  42                                struct dcbx_ets_feature *ets);
  43static void bnx2x_dcbx_fw_struct(struct bnx2x *bp,
  44                                 struct bnx2x_func_tx_start_params*);
  45
  46/* helpers: read/write len bytes from addr into buff by REG_RD/REG_WR */
  47static void bnx2x_read_data(struct bnx2x *bp, uint32_t *buff,
  48                                   uint32_t addr, uint32_t len)
  49{
  50        int i;
  51        for (i = 0; i < len; i += 4, buff++)
  52                *buff = REG_RD(bp, addr + i);
  53}
  54
  55static void bnx2x_write_data(struct bnx2x *bp, uint32_t *buff,
  56                                    uint32_t addr, uint32_t len)
  57{
  58        int i;
  59        for (i = 0; i < len; i += 4, buff++)
  60                REG_WR(bp, addr + i, *buff);
  61}
  62
  63static void bnx2x_pfc_set(struct bnx2x *bp)
  64{
  65        struct bnx2x_nig_brb_pfc_port_params pfc_params = {0};
  66        uint32_t pri_bit, val = 0;
  67        int i;
  68
  69        pfc_params.num_of_rx_cos_priority_mask =
  70                                        bp->dcbx_port_params.ets.num_of_cos;
  71
  72        /* Tx COS configuration */
  73        for (i = 0; i < bp->dcbx_port_params.ets.num_of_cos; i++)
  74                /*
  75                 * We configure only the pauseable bits (non pauseable aren't
  76                 * configured at all) it's done to avoid false pauses from
  77                 * network
  78                 */
  79                pfc_params.rx_cos_priority_mask[i] =
  80                        bp->dcbx_port_params.ets.cos_params[i].pri_bitmask
  81                                & DCBX_PFC_PRI_PAUSE_MASK(bp);
  82
  83        /*
  84         * Rx COS configuration
  85         * Changing PFC RX configuration .
  86         * In RX COS0 will always be configured to lossless and COS1 to lossy
  87         */
  88        for (i = 0 ; i < MAX_PFC_PRIORITIES ; i++) {
  89                pri_bit = 1 << i;
  90
  91                if (!(pri_bit & DCBX_PFC_PRI_PAUSE_MASK(bp)))
  92                        val |= 1 << (i * 4);
  93        }
  94
  95        pfc_params.pkt_priority_to_cos = val;
  96
  97        /* RX COS0 */
  98        pfc_params.llfc_low_priority_classes = DCBX_PFC_PRI_PAUSE_MASK(bp);
  99        /* RX COS1 */
 100        pfc_params.llfc_high_priority_classes = 0;
 101
 102        bnx2x_acquire_phy_lock(bp);
 103        bp->link_params.feature_config_flags |= FEATURE_CONFIG_PFC_ENABLED;
 104        bnx2x_update_pfc(&bp->link_params, &bp->link_vars, &pfc_params);
 105        bnx2x_release_phy_lock(bp);
 106}
 107
 108static void bnx2x_pfc_clear(struct bnx2x *bp)
 109{
 110        struct bnx2x_nig_brb_pfc_port_params nig_params = {0};
 111        nig_params.pause_enable = 1;
 112        bnx2x_acquire_phy_lock(bp);
 113        bp->link_params.feature_config_flags &= ~FEATURE_CONFIG_PFC_ENABLED;
 114        bnx2x_update_pfc(&bp->link_params, &bp->link_vars, &nig_params);
 115        bnx2x_release_phy_lock(bp);
 116}
 117
 118static void  bnx2x_dump_dcbx_drv_param(struct bnx2x *bp,
 119                                       struct dcbx_features *features,
 120                                       uint32_t error)
 121{
 122        uint8_t i = 0;
 123        DP(NETIF_MSG_LINK, "local_mib.error %x\n", error);
 124
 125        /* PG */
 126        DP(NETIF_MSG_LINK,
 127           "local_mib.features.ets.enabled %x\n", features->ets.enabled);
 128        for (i = 0; i < DCBX_MAX_NUM_PG_BW_ENTRIES; i++)
 129                DP(NETIF_MSG_LINK,
 130                   "local_mib.features.ets.pg_bw_tbl[%d] %d\n", i,
 131                   DCBX_PG_BW_GET(features->ets.pg_bw_tbl, i));
 132        for (i = 0; i < DCBX_MAX_NUM_PRI_PG_ENTRIES; i++)
 133                DP(NETIF_MSG_LINK,
 134                   "local_mib.features.ets.pri_pg_tbl[%d] %d\n", i,
 135                   DCBX_PRI_PG_GET(features->ets.pri_pg_tbl, i));
 136
 137        /* pfc */
 138        DP(BNX2X_MSG_DCB, "dcbx_features.pfc.pri_en_bitmap %x\n",
 139                                        features->pfc.pri_en_bitmap);
 140        DP(BNX2X_MSG_DCB, "dcbx_features.pfc.pfc_caps %x\n",
 141                                        features->pfc.pfc_caps);
 142        DP(BNX2X_MSG_DCB, "dcbx_features.pfc.enabled %x\n",
 143                                        features->pfc.enabled);
 144
 145        DP(BNX2X_MSG_DCB, "dcbx_features.app.default_pri %x\n",
 146                                        features->app.default_pri);
 147        DP(BNX2X_MSG_DCB, "dcbx_features.app.tc_supported %x\n",
 148                                        features->app.tc_supported);
 149        DP(BNX2X_MSG_DCB, "dcbx_features.app.enabled %x\n",
 150                                        features->app.enabled);
 151        for (i = 0; i < DCBX_MAX_APP_PROTOCOL; i++) {
 152                DP(BNX2X_MSG_DCB,
 153                   "dcbx_features.app.app_pri_tbl[%x].app_id %x\n",
 154                   i, features->app.app_pri_tbl[i].app_id);
 155                DP(BNX2X_MSG_DCB,
 156                   "dcbx_features.app.app_pri_tbl[%x].pri_bitmap %x\n",
 157                   i, features->app.app_pri_tbl[i].pri_bitmap);
 158                DP(BNX2X_MSG_DCB,
 159                   "dcbx_features.app.app_pri_tbl[%x].appBitfield %x\n",
 160                   i, features->app.app_pri_tbl[i].appBitfield);
 161        }
 162}
 163
 164static void bnx2x_dcbx_get_ap_priority(struct bnx2x *bp,
 165                                       uint8_t pri_bitmap,
 166                                       uint8_t llfc_traf_type)
 167{
 168        uint32_t pri = MAX_PFC_PRIORITIES;
 169        uint32_t index = MAX_PFC_PRIORITIES - 1;
 170        uint32_t pri_mask;
 171        uint32_t *ttp = bp->dcbx_port_params.app.traffic_type_priority;
 172
 173        /* Choose the highest priority */
 174        while ((MAX_PFC_PRIORITIES == pri) && (0 != index)) {
 175                pri_mask = 1 << index;
 176                if (GET_FLAGS(pri_bitmap, pri_mask))
 177                        pri = index ;
 178                index--;
 179        }
 180
 181        if (pri < MAX_PFC_PRIORITIES)
 182                ttp[llfc_traf_type] = MAX_T(uint32_t, ttp[llfc_traf_type],
 183                                            pri);
 184}
 185
 186static void bnx2x_dcbx_get_ap_feature(struct bnx2x *bp,
 187                                   struct dcbx_app_priority_feature *app,
 188                                   uint32_t error) {
 189        uint8_t index;
 190        uint32_t *ttp = bp->dcbx_port_params.app.traffic_type_priority;
 191
 192        if (GET_FLAGS(error, DCBX_LOCAL_APP_ERROR))
 193                DP(BNX2X_MSG_DCB, "DCBX_LOCAL_APP_ERROR\n");
 194
 195        if (GET_FLAGS(error, DCBX_LOCAL_APP_MISMATCH))
 196                DP(BNX2X_MSG_DCB, "DCBX_LOCAL_APP_MISMATCH\n");
 197
 198        if (GET_FLAGS(error, DCBX_REMOTE_APP_TLV_NOT_FOUND))
 199                DP(BNX2X_MSG_DCB, "DCBX_REMOTE_APP_TLV_NOT_FOUND\n");
 200        if (app->enabled &&
 201            !GET_FLAGS(error, DCBX_LOCAL_APP_ERROR | DCBX_LOCAL_APP_MISMATCH |
 202                              DCBX_REMOTE_APP_TLV_NOT_FOUND)) {
 203
 204                bp->dcbx_port_params.app.enabled = true;
 205
 206                for (index = 0 ; index < LLFC_DRIVER_TRAFFIC_TYPE_MAX; index++)
 207                        ttp[index] = 0;
 208
 209                if (app->default_pri < MAX_PFC_PRIORITIES)
 210                        ttp[LLFC_TRAFFIC_TYPE_NW] = app->default_pri;
 211
 212                for (index = 0 ; index < DCBX_MAX_APP_PROTOCOL; index++) {
 213                        struct dcbx_app_priority_entry *entry =
 214                                                        app->app_pri_tbl;
 215
 216                        if (GET_FLAGS(entry[index].appBitfield,
 217                                     DCBX_APP_SF_ETH_TYPE) &&
 218                           ETH_TYPE_FCOE == entry[index].app_id)
 219                                bnx2x_dcbx_get_ap_priority(bp,
 220                                                entry[index].pri_bitmap,
 221                                                LLFC_TRAFFIC_TYPE_FCOE);
 222
 223                        if (GET_FLAGS(entry[index].appBitfield,
 224                                     DCBX_APP_SF_PORT) &&
 225                           TCP_PORT_ISCSI == entry[index].app_id)
 226                                bnx2x_dcbx_get_ap_priority(bp,
 227                                                entry[index].pri_bitmap,
 228                                                LLFC_TRAFFIC_TYPE_ISCSI);
 229                }
 230        } else {
 231                DP(BNX2X_MSG_DCB, "DCBX_LOCAL_APP_DISABLED\n");
 232                bp->dcbx_port_params.app.enabled = false;
 233                for (index = 0 ; index < LLFC_DRIVER_TRAFFIC_TYPE_MAX; index++)
 234                        ttp[index] = INVALID_TRAFFIC_TYPE_PRIORITY;
 235        }
 236}
 237
 238static void bnx2x_dcbx_get_ets_feature(struct bnx2x *bp,
 239                                       struct dcbx_ets_feature *ets,
 240                                       uint32_t error) {
 241        int i = 0;
 242        uint32_t pg_pri_orginal_spread[DCBX_MAX_NUM_PG_BW_ENTRIES] = {0};
 243        struct pg_help_data pg_help_data;
 244        struct bnx2x_dcbx_cos_params *cos_params =
 245                        bp->dcbx_port_params.ets.cos_params;
 246
 247        memset(&pg_help_data, 0, sizeof(struct pg_help_data));
 248
 249        if (GET_FLAGS(error, DCBX_LOCAL_ETS_ERROR))
 250                DP(BNX2X_MSG_DCB, "DCBX_LOCAL_ETS_ERROR\n");
 251
 252        if (GET_FLAGS(error, DCBX_REMOTE_ETS_TLV_NOT_FOUND))
 253                DP(BNX2X_MSG_DCB, "DCBX_REMOTE_ETS_TLV_NOT_FOUND\n");
 254
 255        /* Clean up old settings of ets on COS */
 256        for (i = 0; i < ARRAY_SIZE(bp->dcbx_port_params.ets.cos_params) ; i++) {
 257                cos_params[i].pauseable = false;
 258                cos_params[i].strict = BNX2X_DCBX_STRICT_INVALID;
 259                cos_params[i].bw_tbl = DCBX_INVALID_COS_BW;
 260                cos_params[i].pri_bitmask = 0;
 261        }
 262
 263        if (bp->dcbx_port_params.app.enabled && ets->enabled &&
 264           !GET_FLAGS(error,
 265                      DCBX_LOCAL_ETS_ERROR | DCBX_REMOTE_ETS_TLV_NOT_FOUND)) {
 266                DP(BNX2X_MSG_DCB, "DCBX_LOCAL_ETS_ENABLE\n");
 267                bp->dcbx_port_params.ets.enabled = true;
 268
 269                bnx2x_dcbx_get_ets_pri_pg_tbl(bp,
 270                                              pg_pri_orginal_spread,
 271                                              ets->pri_pg_tbl);
 272
 273                bnx2x_dcbx_get_num_pg_traf_type(bp,
 274                                                pg_pri_orginal_spread,
 275                                                &pg_help_data);
 276
 277                bnx2x_dcbx_fill_cos_params(bp, &pg_help_data,
 278                                           ets, pg_pri_orginal_spread);
 279
 280        } else {
 281                DP(BNX2X_MSG_DCB, "DCBX_LOCAL_ETS_DISABLED\n");
 282                bp->dcbx_port_params.ets.enabled = false;
 283                ets->pri_pg_tbl[0] = 0;
 284
 285                for (i = 0; i < DCBX_MAX_NUM_PRI_PG_ENTRIES ; i++)
 286                        DCBX_PG_BW_SET(ets->pg_bw_tbl, i, 1);
 287        }
 288}
 289
 290static void  bnx2x_dcbx_get_pfc_feature(struct bnx2x *bp,
 291                                        struct dcbx_pfc_feature *pfc,
 292                                        uint32_t error)
 293{
 294        if (GET_FLAGS(error, DCBX_LOCAL_PFC_ERROR))
 295                DP(BNX2X_MSG_DCB, "DCBX_LOCAL_PFC_ERROR\n");
 296
 297        if (GET_FLAGS(error, DCBX_REMOTE_PFC_TLV_NOT_FOUND))
 298                DP(BNX2X_MSG_DCB, "DCBX_REMOTE_PFC_TLV_NOT_FOUND\n");
 299        if (bp->dcbx_port_params.app.enabled && pfc->enabled &&
 300           !GET_FLAGS(error, DCBX_LOCAL_PFC_ERROR | DCBX_LOCAL_PFC_MISMATCH |
 301                             DCBX_REMOTE_PFC_TLV_NOT_FOUND)) {
 302                bp->dcbx_port_params.pfc.enabled = true;
 303                bp->dcbx_port_params.pfc.priority_non_pauseable_mask =
 304                        ~(pfc->pri_en_bitmap);
 305        } else {
 306                DP(BNX2X_MSG_DCB, "DCBX_LOCAL_PFC_DISABLED\n");
 307                bp->dcbx_port_params.pfc.enabled = false;
 308                bp->dcbx_port_params.pfc.priority_non_pauseable_mask = 0;
 309        }
 310}
 311
 312/* maps unmapped priorities to to the same COS as L2 */
 313static void bnx2x_dcbx_map_nw(struct bnx2x *bp)
 314{
 315        int i;
 316        uint32_t unmapped = (1 << MAX_PFC_PRIORITIES) - 1; /* all ones */
 317        uint32_t *ttp = bp->dcbx_port_params.app.traffic_type_priority;
 318        uint32_t nw_prio = 1 << ttp[LLFC_TRAFFIC_TYPE_NW];
 319        struct bnx2x_dcbx_cos_params *cos_params =
 320                        bp->dcbx_port_params.ets.cos_params;
 321
 322        /* get unmapped priorities by clearing mapped bits */
 323        for (i = 0; i < LLFC_DRIVER_TRAFFIC_TYPE_MAX; i++)
 324                unmapped &= ~(1 << ttp[i]);
 325
 326        /* find cos for nw prio and extend it with unmapped */
 327        for (i = 0; i < ARRAY_SIZE(bp->dcbx_port_params.ets.cos_params); i++) {
 328                if (cos_params[i].pri_bitmask & nw_prio) {
 329                        /* extend the bitmask with unmapped */
 330                        DP(BNX2X_MSG_DCB,
 331                           "cos %d extended with 0x%08x\n", i, unmapped);
 332                        cos_params[i].pri_bitmask |= unmapped;
 333                        break;
 334                }
 335        }
 336}
 337
 338static void bnx2x_get_dcbx_drv_param(struct bnx2x *bp,
 339                                     struct dcbx_features *features,
 340                                     uint32_t error)
 341{
 342        bnx2x_dcbx_get_ap_feature(bp, &features->app, error);
 343
 344        bnx2x_dcbx_get_pfc_feature(bp, &features->pfc, error);
 345
 346        bnx2x_dcbx_get_ets_feature(bp, &features->ets, error);
 347
 348        bnx2x_dcbx_map_nw(bp);
 349}
 350
 351#define DCBX_LOCAL_MIB_MAX_TRY_READ             (100)
 352static int bnx2x_dcbx_read_mib(struct bnx2x *bp,
 353                               uint32_t *base_mib_addr,
 354                               uint32_t offset,
 355                               int read_mib_type)
 356{
 357        int max_try_read = 0;
 358        uint32_t mib_size, prefix_seq_num, suffix_seq_num;
 359        struct lldp_remote_mib *remote_mib ;
 360        struct lldp_local_mib  *local_mib;
 361
 362        switch (read_mib_type) {
 363        case DCBX_READ_LOCAL_MIB:
 364                mib_size = sizeof(struct lldp_local_mib);
 365                break;
 366        case DCBX_READ_REMOTE_MIB:
 367                mib_size = sizeof(struct lldp_remote_mib);
 368                break;
 369        default:
 370                return 1; /*error*/
 371        }
 372
 373        offset += BP_PORT(bp) * mib_size;
 374
 375        do {
 376                bnx2x_read_data(bp, base_mib_addr, offset, mib_size);
 377
 378                max_try_read++;
 379
 380                switch (read_mib_type) {
 381                case DCBX_READ_LOCAL_MIB:
 382                        local_mib = (struct lldp_local_mib *) base_mib_addr;
 383                        prefix_seq_num = local_mib->prefix_seq_num;
 384                        suffix_seq_num = local_mib->suffix_seq_num;
 385                        break;
 386                case DCBX_READ_REMOTE_MIB:
 387                        remote_mib = (struct lldp_remote_mib *) base_mib_addr;
 388                        prefix_seq_num = remote_mib->prefix_seq_num;
 389                        suffix_seq_num = remote_mib->suffix_seq_num;
 390                        break;
 391                default:
 392                        return 1; /*error*/
 393                }
 394        } while ((prefix_seq_num != suffix_seq_num) &&
 395               (max_try_read < DCBX_LOCAL_MIB_MAX_TRY_READ));
 396
 397        if (max_try_read >= DCBX_LOCAL_MIB_MAX_TRY_READ) {
 398                BNX2X_ERR("MIB could not be read\n");
 399                return 1;
 400        }
 401
 402        return 0;
 403}
 404
 405static void bnx2x_pfc_set_pfc(struct bnx2x *bp)
 406{
 407        int mfw_configured = SHMEM2_HAS(bp, drv_flags) &&
 408                             GET_FLAGS(SHMEM2_RD(bp, drv_flags),
 409                                       1 << DRV_FLAGS_DCB_MFW_CONFIGURED);
 410
 411        if (bp->dcbx_port_params.pfc.enabled &&
 412            (!(bp->dcbx_error & DCBX_REMOTE_MIB_ERROR) || mfw_configured))
 413                /*
 414                 * 1. Fills up common PFC structures if required
 415                 * 2. Configure NIG, MAC and BRB via the elink
 416                 */
 417                bnx2x_pfc_set(bp);
 418        else
 419                bnx2x_pfc_clear(bp);
 420}
 421
 422int bnx2x_dcbx_stop_hw_tx(struct bnx2x *bp)
 423{
 424        struct bnx2x_func_state_params func_params = {NULL};
 425        int rc;
 426
 427        func_params.f_obj = &bp->func_obj;
 428        func_params.cmd = BNX2X_F_CMD_TX_STOP;
 429
 430        __set_bit(RAMROD_COMP_WAIT, &func_params.ramrod_flags);
 431        __set_bit(RAMROD_RETRY, &func_params.ramrod_flags);
 432
 433        DP(BNX2X_MSG_DCB, "STOP TRAFFIC\n");
 434
 435        rc = bnx2x_func_state_change(bp, &func_params);
 436        if (rc) {
 437                BNX2X_ERR("Unable to hold traffic for HW configuration\n");
 438                bnx2x_panic();
 439        }
 440
 441        return rc;
 442}
 443
 444int bnx2x_dcbx_resume_hw_tx(struct bnx2x *bp)
 445{
 446        struct bnx2x_func_state_params func_params = {NULL};
 447        struct bnx2x_func_tx_start_params *tx_params =
 448                &func_params.params.tx_start;
 449        int rc;
 450
 451        func_params.f_obj = &bp->func_obj;
 452        func_params.cmd = BNX2X_F_CMD_TX_START;
 453
 454        __set_bit(RAMROD_COMP_WAIT, &func_params.ramrod_flags);
 455        __set_bit(RAMROD_RETRY, &func_params.ramrod_flags);
 456
 457        bnx2x_dcbx_fw_struct(bp, tx_params);
 458
 459        DP(BNX2X_MSG_DCB, "START TRAFFIC\n");
 460
 461        rc = bnx2x_func_state_change(bp, &func_params);
 462        if (rc) {
 463                BNX2X_ERR("Unable to resume traffic after HW configuration\n");
 464                bnx2x_panic();
 465        }
 466
 467        return rc;
 468}
 469
 470static void bnx2x_dcbx_2cos_limit_update_ets_config(struct bnx2x *bp)
 471{
 472        struct bnx2x_dcbx_pg_params *ets = &(bp->dcbx_port_params.ets);
 473        int rc = 0;
 474
 475        if (ets->num_of_cos == 0 || ets->num_of_cos > DCBX_COS_MAX_NUM_E2) {
 476                BNX2X_ERR("Illegal number of COSes %d\n", ets->num_of_cos);
 477                return;
 478        }
 479
 480        /* valid COS entries */
 481        if (ets->num_of_cos == 1)   /* no ETS */
 482                return;
 483
 484        /* sanity */
 485        if (((BNX2X_DCBX_STRICT_INVALID == ets->cos_params[0].strict) &&
 486             (DCBX_INVALID_COS_BW == ets->cos_params[0].bw_tbl)) ||
 487            ((BNX2X_DCBX_STRICT_INVALID == ets->cos_params[1].strict) &&
 488             (DCBX_INVALID_COS_BW == ets->cos_params[1].bw_tbl))) {
 489                BNX2X_ERR("all COS should have at least bw_limit or strict"
 490                            "ets->cos_params[0].strict= %x"
 491                            "ets->cos_params[0].bw_tbl= %x"
 492                            "ets->cos_params[1].strict= %x"
 493                            "ets->cos_params[1].bw_tbl= %x",
 494                          ets->cos_params[0].strict,
 495                          ets->cos_params[0].bw_tbl,
 496                          ets->cos_params[1].strict,
 497                          ets->cos_params[1].bw_tbl);
 498                return;
 499        }
 500        /* If we join a group and there is bw_tbl and strict then bw rules */
 501        if ((DCBX_INVALID_COS_BW != ets->cos_params[0].bw_tbl) &&
 502            (DCBX_INVALID_COS_BW != ets->cos_params[1].bw_tbl)) {
 503                uint32_t bw_tbl_0 = ets->cos_params[0].bw_tbl;
 504                uint32_t bw_tbl_1 = ets->cos_params[1].bw_tbl;
 505                /* Do not allow 0-100 configuration
 506                 * since PBF does not support it
 507                 * force 1-99 instead
 508                 */
 509                if (bw_tbl_0 == 0) {
 510                        bw_tbl_0 = 1;
 511                        bw_tbl_1 = 99;
 512                } else if (bw_tbl_1 == 0) {
 513                        bw_tbl_1 = 1;
 514                        bw_tbl_0 = 99;
 515                }
 516
 517                bnx2x_ets_bw_limit(&bp->link_params, bw_tbl_0, bw_tbl_1);
 518        } else {
 519                if (ets->cos_params[0].strict == BNX2X_DCBX_STRICT_COS_HIGHEST)
 520                        rc = bnx2x_ets_strict(&bp->link_params, 0);
 521                else if (ets->cos_params[1].strict
 522                                        == BNX2X_DCBX_STRICT_COS_HIGHEST)
 523                        rc = bnx2x_ets_strict(&bp->link_params, 1);
 524                if (rc)
 525                        BNX2X_ERR("update_ets_params failed\n");
 526        }
 527}
 528
 529/*
 530 * In E3B0 the configuration may have more than 2 COS.
 531 */
 532static void bnx2x_dcbx_update_ets_config(struct bnx2x *bp)
 533{
 534        struct bnx2x_dcbx_pg_params *ets = &(bp->dcbx_port_params.ets);
 535        struct bnx2x_ets_params ets_params = { 0 };
 536        uint8_t i;
 537
 538        ets_params.num_of_cos = ets->num_of_cos;
 539
 540        for (i = 0; i < ets->num_of_cos; i++) {
 541                /* COS is SP */
 542                if (ets->cos_params[i].strict != BNX2X_DCBX_STRICT_INVALID) {
 543                        if (ets->cos_params[i].bw_tbl != DCBX_INVALID_COS_BW) {
 544                                BNX2X_ERR("COS can't be not BW and not SP\n");
 545                                return;
 546                        }
 547
 548                        ets_params.cos[i].state = bnx2x_cos_state_strict;
 549                        ets_params.cos[i].params.sp_params.pri =
 550                                                ets->cos_params[i].strict;
 551                } else { /* COS is BW */
 552                        if (ets->cos_params[i].bw_tbl == DCBX_INVALID_COS_BW) {
 553                                BNX2X_ERR("COS can't be not BW and not SP\n");
 554                                return;
 555                        }
 556                        ets_params.cos[i].state = bnx2x_cos_state_bw;
 557                        ets_params.cos[i].params.bw_params.bw =
 558                                                (uint8_t)ets->cos_params[i].bw_tbl;
 559                }
 560        }
 561
 562        /* Configure the ETS in HW */
 563        if (bnx2x_ets_e3b0_config(&bp->link_params, &bp->link_vars,
 564                                  &ets_params)) {
 565                BNX2X_ERR("bnx2x_ets_e3b0_config failed\n");
 566                bnx2x_ets_disabled(&bp->link_params, &bp->link_vars);
 567        }
 568}
 569
 570static void bnx2x_dcbx_update_ets_params(struct bnx2x *bp)
 571{
 572        int mfw_configured = SHMEM2_HAS(bp, drv_flags) &&
 573                             GET_FLAGS(SHMEM2_RD(bp, drv_flags),
 574                                       1 << DRV_FLAGS_DCB_MFW_CONFIGURED);
 575
 576        bnx2x_ets_disabled(&bp->link_params, &bp->link_vars);
 577
 578        if (!bp->dcbx_port_params.ets.enabled ||
 579            ((bp->dcbx_error & DCBX_REMOTE_MIB_ERROR) && !mfw_configured))
 580                return;
 581
 582        if (CHIP_IS_E3B0(bp))
 583                bnx2x_dcbx_update_ets_config(bp);
 584        else
 585                bnx2x_dcbx_2cos_limit_update_ets_config(bp);
 586}
 587
 588#ifdef BCM_DCBNL
 589static int bnx2x_dcbx_read_shmem_remote_mib(struct bnx2x *bp)
 590{
 591        struct lldp_remote_mib remote_mib = {0};
 592        uint32_t dcbx_remote_mib_offset = SHMEM2_RD(bp, dcbx_remote_mib_offset);
 593        int rc;
 594
 595        DP(BNX2X_MSG_DCB, "dcbx_remote_mib_offset 0x%x\n",
 596           dcbx_remote_mib_offset);
 597
 598        if (SHMEM_DCBX_REMOTE_MIB_NONE == dcbx_remote_mib_offset) {
 599                BNX2X_ERR("FW doesn't support dcbx_remote_mib_offset\n");
 600                return -EINVAL;
 601        }
 602
 603        rc = bnx2x_dcbx_read_mib(bp, (uint32_t *)&remote_mib,
 604                                 dcbx_remote_mib_offset,
 605                                 DCBX_READ_REMOTE_MIB);
 606
 607        if (rc) {
 608                BNX2X_ERR("Failed to read remote mib from FW\n");
 609                return rc;
 610        }
 611
 612        /* save features and flags */
 613        bp->dcbx_remote_feat = remote_mib.features;
 614        bp->dcbx_remote_flags = remote_mib.flags;
 615        return 0;
 616}
 617#endif
 618
 619static int bnx2x_dcbx_read_shmem_neg_results(struct bnx2x *bp)
 620{
 621        struct lldp_local_mib local_mib = {0};
 622        uint32_t dcbx_neg_res_offset = SHMEM2_RD(bp, dcbx_neg_res_offset);
 623        int rc;
 624
 625        DP(BNX2X_MSG_DCB, "dcbx_neg_res_offset 0x%x\n", dcbx_neg_res_offset);
 626
 627        if (SHMEM_DCBX_NEG_RES_NONE == dcbx_neg_res_offset) {
 628                BNX2X_ERR("FW doesn't support dcbx_neg_res_offset\n");
 629                return -EINVAL;
 630        }
 631
 632        rc = bnx2x_dcbx_read_mib(bp, (uint32_t *)&local_mib,
 633                                 dcbx_neg_res_offset,
 634                                 DCBX_READ_LOCAL_MIB);
 635
 636        if (rc) {
 637                BNX2X_ERR("Failed to read local mib from FW\n");
 638                return rc;
 639        }
 640
 641        /* save features and error */
 642        bp->dcbx_local_feat = local_mib.features;
 643        bp->dcbx_error = local_mib.error;
 644        return 0;
 645}
 646
 647#ifdef BCM_DCBNL
 648static inline
 649uint8_t bnx2x_dcbx_dcbnl_app_up(struct dcbx_app_priority_entry *ent)
 650{
 651        uint8_t pri;
 652
 653        /* Choose the highest priority */
 654        for (pri = MAX_PFC_PRIORITIES - 1; pri > 0; pri--)
 655                if (ent->pri_bitmap & (1 << pri))
 656                        break;
 657        return pri;
 658}
 659
 660static inline
 661uint8_t bnx2x_dcbx_dcbnl_app_idtype(struct dcbx_app_priority_entry *ent)
 662{
 663        return ((ent->appBitfield & DCBX_APP_ENTRY_SF_MASK) ==
 664                DCBX_APP_SF_PORT) ? DCB_APP_IDTYPE_PORTNUM :
 665                DCB_APP_IDTYPE_ETHTYPE;
 666}
 667
 668int bnx2x_dcbnl_update_applist(struct bnx2x *bp, bool delall)
 669{
 670        int i, err = 0;
 671
 672        for (i = 0; i < DCBX_MAX_APP_PROTOCOL && err == 0; i++) {
 673                struct dcbx_app_priority_entry *ent =
 674                        &bp->dcbx_local_feat.app.app_pri_tbl[i];
 675
 676                if (ent->appBitfield & DCBX_APP_ENTRY_VALID) {
 677                        uint8_t up = bnx2x_dcbx_dcbnl_app_up(ent);
 678
 679                        /* avoid invalid user-priority */
 680                        if (up) {
 681                                struct dcb_app app;
 682                                app.selector = bnx2x_dcbx_dcbnl_app_idtype(ent);
 683                                app.protocol = ent->app_id;
 684                                app.priority = delall ? 0 : up;
 685                                err = dcb_setapp(bp->dev, &app);
 686                        }
 687                }
 688        }
 689        return err;
 690}
 691#endif
 692
 693static inline void bnx2x_dcbx_update_tc_mapping(struct bnx2x *bp)
 694{
 695        uint8_t prio, cos;
 696        for (cos = 0; cos < bp->dcbx_port_params.ets.num_of_cos; cos++) {
 697                for (prio = 0; prio < BNX2X_MAX_PRIORITY; prio++) {
 698                        if (bp->dcbx_port_params.ets.cos_params[cos].pri_bitmask
 699                            & (1 << prio)) {
 700                                bp->prio_to_cos[prio] = cos;
 701                                DP(BNX2X_MSG_DCB,
 702                                   "tx_mapping %d --> %d\n", prio, cos);
 703                        }
 704                }
 705        }
 706
 707        /* setup tc must be called under rtnl lock, but we can't take it here
 708         * as we are handling an attention on a work queue which must be
 709         * flushed at some rtnl-locked contexts (e.g. if down)
 710         */
 711        bnx2x_schedule_sp_rtnl(bp, BNX2X_SP_RTNL_SETUP_TC, 0);
 712}
 713
 714void bnx2x_dcbx_set_params(struct bnx2x *bp, uint32_t state)
 715{
 716        switch (state) {
 717        case BNX2X_DCBX_STATE_NEG_RECEIVED:
 718                {
 719                        DP(BNX2X_MSG_DCB, "BNX2X_DCBX_STATE_NEG_RECEIVED\n");
 720#ifdef BCM_DCBNL
 721                        /**
 722                         * Delete app tlvs from dcbnl before reading new
 723                         * negotiation results
 724                         */
 725                        bnx2x_dcbnl_update_applist(bp, true);
 726
 727                        /* Read remote mib if dcbx is in the FW */
 728                        if (bnx2x_dcbx_read_shmem_remote_mib(bp))
 729                                return;
 730#endif
 731                        /* Read neg results if dcbx is in the FW */
 732                        if (bnx2x_dcbx_read_shmem_neg_results(bp))
 733                                return;
 734
 735                        bnx2x_dump_dcbx_drv_param(bp, &bp->dcbx_local_feat,
 736                                                  bp->dcbx_error);
 737
 738                        bnx2x_get_dcbx_drv_param(bp, &bp->dcbx_local_feat,
 739                                                 bp->dcbx_error);
 740
 741                        /* mark DCBX result for PMF migration */
 742                        bnx2x_update_drv_flags(bp,
 743                                               1 << DRV_FLAGS_DCB_CONFIGURED,
 744                                               1);
 745#ifdef BCM_DCBNL
 746                        /*
 747                         * Add new app tlvs to dcbnl
 748                         */
 749                        bnx2x_dcbnl_update_applist(bp, false);
 750#endif
 751                        /*
 752                         * reconfigure the netdevice with the results of the new
 753                         * dcbx negotiation.
 754                         */
 755                        bnx2x_dcbx_update_tc_mapping(bp);
 756
 757                        /*
 758                         * allow other functions to update their netdevices
 759                         * accordingly
 760                         */
 761                        if (IS_MF(bp))
 762                                bnx2x_link_sync_notify(bp);
 763
 764                        bnx2x_schedule_sp_rtnl(bp, BNX2X_SP_RTNL_TX_STOP, 0);
 765                        return;
 766                }
 767        case BNX2X_DCBX_STATE_TX_PAUSED:
 768                DP(BNX2X_MSG_DCB, "BNX2X_DCBX_STATE_TX_PAUSED\n");
 769                bnx2x_pfc_set_pfc(bp);
 770
 771                bnx2x_dcbx_update_ets_params(bp);
 772
 773                /* ets may affect cmng configuration: reinit it in hw */
 774                bnx2x_set_local_cmng(bp);
 775                return;
 776        case BNX2X_DCBX_STATE_TX_RELEASED:
 777                DP(BNX2X_MSG_DCB, "BNX2X_DCBX_STATE_TX_RELEASED\n");
 778                bnx2x_fw_command(bp, DRV_MSG_CODE_DCBX_PMF_DRV_OK, 0);
 779#ifdef BCM_DCBNL
 780                /*
 781                 * Send a notification for the new negotiated parameters
 782                 */
 783                dcbnl_cee_notify(bp->dev, RTM_GETDCB, DCB_CMD_CEE_GET, 0, 0);
 784#endif
 785                return;
 786        default:
 787                BNX2X_ERR("Unknown DCBX_STATE\n");
 788        }
 789}
 790
 791#define LLDP_ADMIN_MIB_OFFSET(bp)       (PORT_MAX*sizeof(struct lldp_params) + \
 792                                      BP_PORT(bp)*sizeof(struct lldp_admin_mib))
 793
 794static void bnx2x_dcbx_admin_mib_updated_params(struct bnx2x *bp,
 795                                uint32_t dcbx_lldp_params_offset)
 796{
 797        struct lldp_admin_mib admin_mib;
 798        uint32_t i, other_traf_type = PREDEFINED_APP_IDX_MAX, traf_type = 0;
 799        uint32_t offset = dcbx_lldp_params_offset + LLDP_ADMIN_MIB_OFFSET(bp);
 800
 801        /*shortcuts*/
 802        struct dcbx_features *af = &admin_mib.features;
 803        struct bnx2x_config_dcbx_params *dp = &bp->dcbx_config_params;
 804
 805        memset(&admin_mib, 0, sizeof(struct lldp_admin_mib));
 806
 807        /* Read the data first */
 808        bnx2x_read_data(bp, (uint32_t *)&admin_mib, offset,
 809                        sizeof(struct lldp_admin_mib));
 810
 811        if (bp->dcbx_enabled == BNX2X_DCBX_ENABLED_ON_NEG_ON)
 812                SET_FLAGS(admin_mib.ver_cfg_flags, DCBX_DCBX_ENABLED);
 813        else
 814                RESET_FLAGS(admin_mib.ver_cfg_flags, DCBX_DCBX_ENABLED);
 815
 816        if (dp->overwrite_settings == BNX2X_DCBX_OVERWRITE_SETTINGS_ENABLE) {
 817
 818                RESET_FLAGS(admin_mib.ver_cfg_flags, DCBX_CEE_VERSION_MASK);
 819                admin_mib.ver_cfg_flags |=
 820                        (dp->admin_dcbx_version << DCBX_CEE_VERSION_SHIFT) &
 821                         DCBX_CEE_VERSION_MASK;
 822
 823                af->ets.enabled = (uint8_t)dp->admin_ets_enable;
 824
 825                af->pfc.enabled = (uint8_t)dp->admin_pfc_enable;
 826
 827                /* FOR IEEE dp->admin_tc_supported_tx_enable */
 828                if (dp->admin_ets_configuration_tx_enable)
 829                        SET_FLAGS(admin_mib.ver_cfg_flags,
 830                                  DCBX_ETS_CONFIG_TX_ENABLED);
 831                else
 832                        RESET_FLAGS(admin_mib.ver_cfg_flags,
 833                                    DCBX_ETS_CONFIG_TX_ENABLED);
 834                /* For IEEE admin_ets_recommendation_tx_enable */
 835                if (dp->admin_pfc_tx_enable)
 836                        SET_FLAGS(admin_mib.ver_cfg_flags,
 837                                  DCBX_PFC_CONFIG_TX_ENABLED);
 838                else
 839                        RESET_FLAGS(admin_mib.ver_cfg_flags,
 840                                  DCBX_PFC_CONFIG_TX_ENABLED);
 841
 842                if (dp->admin_application_priority_tx_enable)
 843                        SET_FLAGS(admin_mib.ver_cfg_flags,
 844                                  DCBX_APP_CONFIG_TX_ENABLED);
 845                else
 846                        RESET_FLAGS(admin_mib.ver_cfg_flags,
 847                                  DCBX_APP_CONFIG_TX_ENABLED);
 848
 849                if (dp->admin_ets_willing)
 850                        SET_FLAGS(admin_mib.ver_cfg_flags, DCBX_ETS_WILLING);
 851                else
 852                        RESET_FLAGS(admin_mib.ver_cfg_flags, DCBX_ETS_WILLING);
 853                /* For IEEE admin_ets_reco_valid */
 854                if (dp->admin_pfc_willing)
 855                        SET_FLAGS(admin_mib.ver_cfg_flags, DCBX_PFC_WILLING);
 856                else
 857                        RESET_FLAGS(admin_mib.ver_cfg_flags, DCBX_PFC_WILLING);
 858
 859                if (dp->admin_app_priority_willing)
 860                        SET_FLAGS(admin_mib.ver_cfg_flags, DCBX_APP_WILLING);
 861                else
 862                        RESET_FLAGS(admin_mib.ver_cfg_flags, DCBX_APP_WILLING);
 863
 864                for (i = 0 ; i < DCBX_MAX_NUM_PG_BW_ENTRIES; i++) {
 865                        DCBX_PG_BW_SET(af->ets.pg_bw_tbl, i,
 866                                (uint8_t)dp->admin_configuration_bw_precentage[i]);
 867
 868                        DP(BNX2X_MSG_DCB, "pg_bw_tbl[%d] = %02x\n",
 869                           i, DCBX_PG_BW_GET(af->ets.pg_bw_tbl, i));
 870                }
 871
 872                for (i = 0; i < DCBX_MAX_NUM_PRI_PG_ENTRIES; i++) {
 873                        DCBX_PRI_PG_SET(af->ets.pri_pg_tbl, i,
 874                                        (uint8_t)dp->admin_configuration_ets_pg[i]);
 875
 876                        DP(BNX2X_MSG_DCB, "pri_pg_tbl[%d] = %02x\n",
 877                           i, DCBX_PRI_PG_GET(af->ets.pri_pg_tbl, i));
 878                }
 879
 880                /*For IEEE admin_recommendation_bw_percentage
 881                 *For IEEE admin_recommendation_ets_pg */
 882                af->pfc.pri_en_bitmap = (uint8_t)dp->admin_pfc_bitmap;
 883                for (i = 0; i < DCBX_CONFIG_MAX_APP_PROTOCOL; i++) {
 884                        if (dp->admin_priority_app_table[i].valid) {
 885                                struct bnx2x_admin_priority_app_table *table =
 886                                        dp->admin_priority_app_table;
 887                                if ((ETH_TYPE_FCOE == table[i].app_id) &&
 888                                   (TRAFFIC_TYPE_ETH == table[i].traffic_type))
 889                                        traf_type = FCOE_APP_IDX;
 890                                else if ((TCP_PORT_ISCSI == table[i].app_id) &&
 891                                   (TRAFFIC_TYPE_PORT == table[i].traffic_type))
 892                                        traf_type = ISCSI_APP_IDX;
 893                                else
 894                                        traf_type = other_traf_type++;
 895
 896                                af->app.app_pri_tbl[traf_type].app_id =
 897                                        table[i].app_id;
 898
 899                                af->app.app_pri_tbl[traf_type].pri_bitmap =
 900                                        (uint8_t)(1 << table[i].priority);
 901
 902                                af->app.app_pri_tbl[traf_type].appBitfield =
 903                                    (DCBX_APP_ENTRY_VALID);
 904
 905                                af->app.app_pri_tbl[traf_type].appBitfield |=
 906                                   (TRAFFIC_TYPE_ETH == table[i].traffic_type) ?
 907                                        DCBX_APP_SF_ETH_TYPE : DCBX_APP_SF_PORT;
 908                        }
 909                }
 910
 911                af->app.default_pri = (uint8_t)dp->admin_default_priority;
 912        }
 913
 914        /* Write the data. */
 915        bnx2x_write_data(bp, (uint32_t *)&admin_mib, offset,
 916                         sizeof(struct lldp_admin_mib));
 917}
 918
 919void bnx2x_dcbx_set_state(struct bnx2x *bp, bool dcb_on,
 920                          uint32_t dcbx_enabled)
 921{
 922        if (!CHIP_IS_E1x(bp)) {
 923                bp->dcb_state = dcb_on;
 924                bp->dcbx_enabled = dcbx_enabled;
 925        } else {
 926                bp->dcb_state = false;
 927                bp->dcbx_enabled = BNX2X_DCBX_ENABLED_INVALID;
 928        }
 929        DP(BNX2X_MSG_DCB, "DCB state [%s:%s]\n",
 930           dcb_on ? "ON" : "OFF",
 931           dcbx_enabled == BNX2X_DCBX_ENABLED_OFF ? "user-mode" :
 932           dcbx_enabled == BNX2X_DCBX_ENABLED_ON_NEG_OFF ? "on-chip static" :
 933           dcbx_enabled == BNX2X_DCBX_ENABLED_ON_NEG_ON ?
 934           "on-chip with negotiation" : "invalid");
 935}
 936
 937void bnx2x_dcbx_init_params(struct bnx2x *bp)
 938{
 939        bp->dcbx_config_params.admin_dcbx_version = 0x0; /* 0 - CEE; 1 - IEEE */
 940        bp->dcbx_config_params.admin_ets_willing = 1;
 941        bp->dcbx_config_params.admin_pfc_willing = 1;
 942        bp->dcbx_config_params.overwrite_settings = 1;
 943        bp->dcbx_config_params.admin_ets_enable = 1;
 944        bp->dcbx_config_params.admin_pfc_enable = 1;
 945        bp->dcbx_config_params.admin_tc_supported_tx_enable = 1;
 946        bp->dcbx_config_params.admin_ets_configuration_tx_enable = 1;
 947        bp->dcbx_config_params.admin_pfc_tx_enable = 1;
 948        bp->dcbx_config_params.admin_application_priority_tx_enable = 1;
 949        bp->dcbx_config_params.admin_ets_reco_valid = 1;
 950        bp->dcbx_config_params.admin_app_priority_willing = 1;
 951        bp->dcbx_config_params.admin_configuration_bw_precentage[0] = 100;
 952        bp->dcbx_config_params.admin_configuration_bw_precentage[1] = 0;
 953        bp->dcbx_config_params.admin_configuration_bw_precentage[2] = 0;
 954        bp->dcbx_config_params.admin_configuration_bw_precentage[3] = 0;
 955        bp->dcbx_config_params.admin_configuration_bw_precentage[4] = 0;
 956        bp->dcbx_config_params.admin_configuration_bw_precentage[5] = 0;
 957        bp->dcbx_config_params.admin_configuration_bw_precentage[6] = 0;
 958        bp->dcbx_config_params.admin_configuration_bw_precentage[7] = 0;
 959        bp->dcbx_config_params.admin_configuration_ets_pg[0] = 0;
 960        bp->dcbx_config_params.admin_configuration_ets_pg[1] = 0;
 961        bp->dcbx_config_params.admin_configuration_ets_pg[2] = 0;
 962        bp->dcbx_config_params.admin_configuration_ets_pg[3] = 0;
 963        bp->dcbx_config_params.admin_configuration_ets_pg[4] = 0;
 964        bp->dcbx_config_params.admin_configuration_ets_pg[5] = 0;
 965        bp->dcbx_config_params.admin_configuration_ets_pg[6] = 0;
 966        bp->dcbx_config_params.admin_configuration_ets_pg[7] = 0;
 967        bp->dcbx_config_params.admin_recommendation_bw_precentage[0] = 100;
 968        bp->dcbx_config_params.admin_recommendation_bw_precentage[1] = 0;
 969        bp->dcbx_config_params.admin_recommendation_bw_precentage[2] = 0;
 970        bp->dcbx_config_params.admin_recommendation_bw_precentage[3] = 0;
 971        bp->dcbx_config_params.admin_recommendation_bw_precentage[4] = 0;
 972        bp->dcbx_config_params.admin_recommendation_bw_precentage[5] = 0;
 973        bp->dcbx_config_params.admin_recommendation_bw_precentage[6] = 0;
 974        bp->dcbx_config_params.admin_recommendation_bw_precentage[7] = 0;
 975        bp->dcbx_config_params.admin_recommendation_ets_pg[0] = 0;
 976        bp->dcbx_config_params.admin_recommendation_ets_pg[1] = 1;
 977        bp->dcbx_config_params.admin_recommendation_ets_pg[2] = 2;
 978        bp->dcbx_config_params.admin_recommendation_ets_pg[3] = 3;
 979        bp->dcbx_config_params.admin_recommendation_ets_pg[4] = 4;
 980        bp->dcbx_config_params.admin_recommendation_ets_pg[5] = 5;
 981        bp->dcbx_config_params.admin_recommendation_ets_pg[6] = 6;
 982        bp->dcbx_config_params.admin_recommendation_ets_pg[7] = 7;
 983        bp->dcbx_config_params.admin_pfc_bitmap = 0x0;
 984        bp->dcbx_config_params.admin_priority_app_table[0].valid = 0;
 985        bp->dcbx_config_params.admin_priority_app_table[1].valid = 0;
 986        bp->dcbx_config_params.admin_priority_app_table[2].valid = 0;
 987        bp->dcbx_config_params.admin_priority_app_table[3].valid = 0;
 988        bp->dcbx_config_params.admin_default_priority = 0;
 989}
 990
 991void bnx2x_dcbx_init(struct bnx2x *bp, bool update_shmem)
 992{
 993        uint32_t dcbx_lldp_params_offset = SHMEM_LLDP_DCBX_PARAMS_NONE;
 994
 995        /* only PMF can send ADMIN msg to MFW in old MFW versions */
 996        if ((!bp->port.pmf) && (!(bp->flags & BC_SUPPORTS_DCBX_MSG_NON_PMF)))
 997                return;
 998
 999        if (bp->dcbx_enabled <= 0)
1000                return;
1001
1002        /* validate:
1003         * chip of good for dcbx version,
1004         * dcb is wanted
1005         * shmem2 contains DCBX support fields
1006         */
1007        DP(BNX2X_MSG_DCB, "dcb_state %d bp->port.pmf %d\n",
1008           bp->dcb_state, bp->port.pmf);
1009
1010        if (bp->dcb_state == BNX2X_DCB_STATE_ON &&
1011            SHMEM2_HAS(bp, dcbx_lldp_params_offset)) {
1012                dcbx_lldp_params_offset =
1013                        SHMEM2_RD(bp, dcbx_lldp_params_offset);
1014
1015                DP(BNX2X_MSG_DCB, "dcbx_lldp_params_offset 0x%x\n",
1016                   dcbx_lldp_params_offset);
1017
1018                bnx2x_update_drv_flags(bp, 1 << DRV_FLAGS_DCB_CONFIGURED, 0);
1019
1020                if (SHMEM_LLDP_DCBX_PARAMS_NONE != dcbx_lldp_params_offset) {
1021                        /* need HW lock to avoid scenario of two drivers
1022                         * writing in parallel to shmem
1023                         */
1024                        bnx2x_acquire_hw_lock(bp,
1025                                              HW_LOCK_RESOURCE_DCBX_ADMIN_MIB);
1026                        if (update_shmem)
1027                                bnx2x_dcbx_admin_mib_updated_params(bp,
1028                                        dcbx_lldp_params_offset);
1029
1030                        /* Let HW start negotiation */
1031                        bnx2x_fw_command(bp,
1032                                         DRV_MSG_CODE_DCBX_ADMIN_PMF_MSG, 0);
1033                        /* release HW lock only after MFW acks that it finished
1034                         * reading values from shmem
1035                         */
1036                        bnx2x_release_hw_lock(bp,
1037                                              HW_LOCK_RESOURCE_DCBX_ADMIN_MIB);
1038                }
1039        }
1040}
1041static void
1042bnx2x_dcbx_print_cos_params(struct bnx2x *bp,
1043                            struct bnx2x_func_tx_start_params *pfc_fw_cfg)
1044{
1045        uint8_t pri = 0;
1046        uint8_t cos = 0;
1047
1048        DP(BNX2X_MSG_DCB,
1049           "pfc_fw_cfg->dcb_version %x\n", pfc_fw_cfg->dcb_version);
1050        DP(BNX2X_MSG_DCB,
1051           "pdev->params.dcbx_port_params.pfc.priority_non_pauseable_mask %x\n",
1052           bp->dcbx_port_params.pfc.priority_non_pauseable_mask);
1053
1054        for (cos = 0 ; cos < bp->dcbx_port_params.ets.num_of_cos ; cos++) {
1055                DP(BNX2X_MSG_DCB,
1056                   "pdev->params.dcbx_port_params.ets.cos_params[%d].pri_bitmask %x\n",
1057                   cos, bp->dcbx_port_params.ets.cos_params[cos].pri_bitmask);
1058
1059                DP(BNX2X_MSG_DCB,
1060                   "pdev->params.dcbx_port_params.ets.cos_params[%d].bw_tbl %x\n",
1061                   cos, bp->dcbx_port_params.ets.cos_params[cos].bw_tbl);
1062
1063                DP(BNX2X_MSG_DCB,
1064                   "pdev->params.dcbx_port_params.ets.cos_params[%d].strict %x\n",
1065                   cos, bp->dcbx_port_params.ets.cos_params[cos].strict);
1066
1067                DP(BNX2X_MSG_DCB,
1068                   "pdev->params.dcbx_port_params.ets.cos_params[%d].pauseable %x\n",
1069                   cos, bp->dcbx_port_params.ets.cos_params[cos].pauseable);
1070        }
1071
1072        for (pri = 0; pri < LLFC_DRIVER_TRAFFIC_TYPE_MAX; pri++) {
1073                DP(BNX2X_MSG_DCB,
1074                   "pfc_fw_cfg->traffic_type_to_priority_cos[%d].priority %x\n",
1075                   pri, pfc_fw_cfg->traffic_type_to_priority_cos[pri].priority);
1076
1077                DP(BNX2X_MSG_DCB,
1078                   "pfc_fw_cfg->traffic_type_to_priority_cos[%d].cos %x\n",
1079                   pri, pfc_fw_cfg->traffic_type_to_priority_cos[pri].cos);
1080        }
1081}
1082
1083/* fills help_data according to pg_info */
1084static void bnx2x_dcbx_get_num_pg_traf_type(struct bnx2x *bp,
1085                                            uint32_t *pg_pri_orginal_spread,
1086                                            struct pg_help_data *help_data)
1087{
1088        bool pg_found  = false;
1089        uint32_t i, traf_type, add_traf_type, add_pg;
1090        uint32_t *ttp = bp->dcbx_port_params.app.traffic_type_priority;
1091        struct pg_entry_help_data *data = help_data->data; /*shortcut*/
1092
1093        /* Set to invalid */
1094        for (i = 0; i < LLFC_DRIVER_TRAFFIC_TYPE_MAX; i++)
1095                data[i].pg = DCBX_ILLEGAL_PG;
1096
1097        for (add_traf_type = 0;
1098             add_traf_type < LLFC_DRIVER_TRAFFIC_TYPE_MAX; add_traf_type++) {
1099                pg_found = false;
1100                if (ttp[add_traf_type] < MAX_PFC_PRIORITIES) {
1101                        add_pg = (uint8_t)pg_pri_orginal_spread[ttp[add_traf_type]];
1102                        for (traf_type = 0;
1103                             traf_type < LLFC_DRIVER_TRAFFIC_TYPE_MAX;
1104                             traf_type++) {
1105                                if (data[traf_type].pg == add_pg) {
1106                                        if (!(data[traf_type].pg_priority &
1107                                             (1 << ttp[add_traf_type])))
1108                                                data[traf_type].
1109                                                        num_of_dif_pri++;
1110                                        data[traf_type].pg_priority |=
1111                                                (1 << ttp[add_traf_type]);
1112                                        pg_found = true;
1113                                        break;
1114                                }
1115                        }
1116                        if (false == pg_found) {
1117                                data[help_data->num_of_pg].pg = add_pg;
1118                                data[help_data->num_of_pg].pg_priority =
1119                                                (1 << ttp[add_traf_type]);
1120                                data[help_data->num_of_pg].num_of_dif_pri = 1;
1121                                help_data->num_of_pg++;
1122                        }
1123                }
1124                DP(BNX2X_MSG_DCB,
1125                   "add_traf_type %d pg_found %s num_of_pg %d\n",
1126                   add_traf_type, (false == pg_found) ? "NO" : "YES",
1127                   help_data->num_of_pg);
1128        }
1129}
1130
1131static void bnx2x_dcbx_ets_disabled_entry_data(struct bnx2x *bp,
1132                                               struct cos_help_data *cos_data,
1133                                               uint32_t pri_join_mask)
1134{
1135        /* Only one priority than only one COS */
1136        cos_data->data[0].pausable =
1137                IS_DCBX_PFC_PRI_ONLY_PAUSE(bp, pri_join_mask);
1138        cos_data->data[0].pri_join_mask = pri_join_mask;
1139        cos_data->data[0].cos_bw = 100;
1140        cos_data->num_of_cos = 1;
1141}
1142
1143static inline void bnx2x_dcbx_add_to_cos_bw(struct bnx2x *bp,
1144                                            struct cos_entry_help_data *data,
1145                                            uint8_t pg_bw)
1146{
1147        if (data->cos_bw == DCBX_INVALID_COS_BW)
1148                data->cos_bw = pg_bw;
1149        else
1150                data->cos_bw += pg_bw;
1151}
1152
1153static void bnx2x_dcbx_separate_pauseable_from_non(struct bnx2x *bp,
1154                        struct cos_help_data *cos_data,
1155                        uint32_t *pg_pri_orginal_spread,
1156                        struct dcbx_ets_feature *ets)
1157{
1158        uint32_t        pri_tested      = 0;
1159        uint8_t i               = 0;
1160        uint8_t entry           = 0;
1161        uint8_t pg_entry        = 0;
1162        uint8_t num_of_pri      = LLFC_DRIVER_TRAFFIC_TYPE_MAX;
1163
1164        cos_data->data[0].pausable = true;
1165        cos_data->data[1].pausable = false;
1166        cos_data->data[0].pri_join_mask = cos_data->data[1].pri_join_mask = 0;
1167
1168        for (i = 0 ; i < num_of_pri ; i++) {
1169                pri_tested = 1 << bp->dcbx_port_params.
1170                                        app.traffic_type_priority[i];
1171
1172                if (pri_tested & DCBX_PFC_PRI_NON_PAUSE_MASK(bp)) {
1173                        cos_data->data[1].pri_join_mask |= pri_tested;
1174                        entry = 1;
1175                } else {
1176                        cos_data->data[0].pri_join_mask |= pri_tested;
1177                        entry = 0;
1178                }
1179                pg_entry = (uint8_t)pg_pri_orginal_spread[bp->dcbx_port_params.
1180                                                app.traffic_type_priority[i]];
1181                /* There can be only one strict pg */
1182                if (pg_entry < DCBX_MAX_NUM_PG_BW_ENTRIES)
1183                        bnx2x_dcbx_add_to_cos_bw(bp, &cos_data->data[entry],
1184                                DCBX_PG_BW_GET(ets->pg_bw_tbl, pg_entry));
1185                else
1186                        /* If we join a group and one is strict
1187                         * than the bw rules
1188                         */
1189                        cos_data->data[entry].strict =
1190                                                BNX2X_DCBX_STRICT_COS_HIGHEST;
1191        }
1192        if ((0 == cos_data->data[0].pri_join_mask) &&
1193            (0 == cos_data->data[1].pri_join_mask))
1194                BNX2X_ERR("dcbx error: Both groups must have priorities\n");
1195}
1196
1197#ifndef POWER_OF_2
1198#define POWER_OF_2(x)   ((0 != x) && (0 == (x & (x-1))))
1199#endif
1200
1201static void bnx2x_dcbx_2cos_limit_cee_single_pg_to_cos_params(struct bnx2x *bp,
1202                                              struct pg_help_data *pg_help_data,
1203                                              struct cos_help_data *cos_data,
1204                                              uint32_t pri_join_mask,
1205                                              uint8_t num_of_dif_pri)
1206{
1207        uint8_t i = 0;
1208        uint32_t pri_tested = 0;
1209        uint32_t pri_mask_without_pri = 0;
1210        uint32_t *ttp = bp->dcbx_port_params.app.traffic_type_priority;
1211        /*debug*/
1212        if (num_of_dif_pri == 1) {
1213                bnx2x_dcbx_ets_disabled_entry_data(bp, cos_data, pri_join_mask);
1214                return;
1215        }
1216        /* single priority group */
1217        if (pg_help_data->data[0].pg < DCBX_MAX_NUM_PG_BW_ENTRIES) {
1218                /* If there are both pauseable and non-pauseable priorities,
1219                 * the pauseable priorities go to the first queue and
1220                 * the non-pauseable priorities go to the second queue.
1221                 */
1222                if (IS_DCBX_PFC_PRI_MIX_PAUSE(bp, pri_join_mask)) {
1223                        /* Pauseable */
1224                        cos_data->data[0].pausable = true;
1225                        /* Non pauseable.*/
1226                        cos_data->data[1].pausable = false;
1227
1228                        if (2 == num_of_dif_pri) {
1229                                cos_data->data[0].cos_bw = 50;
1230                                cos_data->data[1].cos_bw = 50;
1231                        }
1232
1233                        if (3 == num_of_dif_pri) {
1234                                if (POWER_OF_2(DCBX_PFC_PRI_GET_PAUSE(bp,
1235                                                        pri_join_mask))) {
1236                                        cos_data->data[0].cos_bw = 33;
1237                                        cos_data->data[1].cos_bw = 67;
1238                                } else {
1239                                        cos_data->data[0].cos_bw = 67;
1240                                        cos_data->data[1].cos_bw = 33;
1241                                }
1242                        }
1243
1244                } else if (IS_DCBX_PFC_PRI_ONLY_PAUSE(bp, pri_join_mask)) {
1245                        /* If there are only pauseable priorities,
1246                         * then one/two priorities go to the first queue
1247                         * and one priority goes to the second queue.
1248                         */
1249                        if (2 == num_of_dif_pri) {
1250                                cos_data->data[0].cos_bw = 50;
1251                                cos_data->data[1].cos_bw = 50;
1252                        } else {
1253                                cos_data->data[0].cos_bw = 67;
1254                                cos_data->data[1].cos_bw = 33;
1255                        }
1256                        cos_data->data[1].pausable = true;
1257                        cos_data->data[0].pausable = true;
1258                        /* All priorities except FCOE */
1259                        cos_data->data[0].pri_join_mask = (pri_join_mask &
1260                                ((uint8_t)~(1 << ttp[LLFC_TRAFFIC_TYPE_FCOE])));
1261                        /* Only FCOE priority.*/
1262                        cos_data->data[1].pri_join_mask =
1263                                (1 << ttp[LLFC_TRAFFIC_TYPE_FCOE]);
1264                } else
1265                        /* If there are only non-pauseable priorities,
1266                         * they will all go to the same queue.
1267                         */
1268                        bnx2x_dcbx_ets_disabled_entry_data(bp,
1269                                                cos_data, pri_join_mask);
1270        } else {
1271                /* priority group which is not BW limited (PG#15):*/
1272                if (IS_DCBX_PFC_PRI_MIX_PAUSE(bp, pri_join_mask)) {
1273                        /* If there are both pauseable and non-pauseable
1274                         * priorities, the pauseable priorities go to the first
1275                         * queue and the non-pauseable priorities
1276                         * go to the second queue.
1277                         */
1278                        if (DCBX_PFC_PRI_GET_PAUSE(bp, pri_join_mask) >
1279                            DCBX_PFC_PRI_GET_NON_PAUSE(bp, pri_join_mask)) {
1280                                cos_data->data[0].strict =
1281                                        BNX2X_DCBX_STRICT_COS_HIGHEST;
1282                                cos_data->data[1].strict =
1283                                        BNX2X_DCBX_STRICT_COS_NEXT_LOWER_PRI(
1284                                                BNX2X_DCBX_STRICT_COS_HIGHEST);
1285                        } else {
1286                                cos_data->data[0].strict =
1287                                        BNX2X_DCBX_STRICT_COS_NEXT_LOWER_PRI(
1288                                                BNX2X_DCBX_STRICT_COS_HIGHEST);
1289                                cos_data->data[1].strict =
1290                                        BNX2X_DCBX_STRICT_COS_HIGHEST;
1291                        }
1292                        /* Pauseable */
1293                        cos_data->data[0].pausable = true;
1294                        /* Non pause-able.*/
1295                        cos_data->data[1].pausable = false;
1296                } else {
1297                        /* If there are only pauseable priorities or
1298                         * only non-pauseable,* the lower priorities go
1299                         * to the first queue and the higher priorities go
1300                         * to the second queue.
1301                         */
1302                        cos_data->data[0].pausable =
1303                                cos_data->data[1].pausable =
1304                                IS_DCBX_PFC_PRI_ONLY_PAUSE(bp, pri_join_mask);
1305
1306                        for (i = 0 ; i < LLFC_DRIVER_TRAFFIC_TYPE_MAX; i++) {
1307                                pri_tested = 1 << bp->dcbx_port_params.
1308                                        app.traffic_type_priority[i];
1309                                /* Remove priority tested */
1310                                pri_mask_without_pri =
1311                                        (pri_join_mask & ((uint8_t)(~pri_tested)));
1312                                if (pri_mask_without_pri < pri_tested)
1313                                        break;
1314                        }
1315
1316                        if (i == LLFC_DRIVER_TRAFFIC_TYPE_MAX)
1317                                BNX2X_ERR("Invalid value for pri_join_mask - could not find a priority\n");
1318
1319                        cos_data->data[0].pri_join_mask = pri_mask_without_pri;
1320                        cos_data->data[1].pri_join_mask = pri_tested;
1321                        /* Both queues are strict priority,
1322                         * and that with the highest priority
1323                         * gets the highest strict priority in the arbiter.
1324                         */
1325                        cos_data->data[0].strict =
1326                                        BNX2X_DCBX_STRICT_COS_NEXT_LOWER_PRI(
1327                                                BNX2X_DCBX_STRICT_COS_HIGHEST);
1328                        cos_data->data[1].strict =
1329                                        BNX2X_DCBX_STRICT_COS_HIGHEST;
1330                }
1331        }
1332}
1333
1334static void bnx2x_dcbx_2cos_limit_cee_two_pg_to_cos_params(
1335                            struct bnx2x                *bp,
1336                            struct  pg_help_data        *pg_help_data,
1337                            struct dcbx_ets_feature     *ets,
1338                            struct cos_help_data        *cos_data,
1339                            uint32_t                    *pg_pri_orginal_spread,
1340                            uint32_t                            pri_join_mask,
1341                            uint8_t                             num_of_dif_pri)
1342{
1343        uint8_t i = 0;
1344        uint8_t pg[DCBX_COS_MAX_NUM_E2] = { 0 };
1345
1346        /* If there are both pauseable and non-pauseable priorities,
1347         * the pauseable priorities go to the first queue and
1348         * the non-pauseable priorities go to the second queue.
1349         */
1350        if (IS_DCBX_PFC_PRI_MIX_PAUSE(bp, pri_join_mask)) {
1351                if (IS_DCBX_PFC_PRI_MIX_PAUSE(bp,
1352                                         pg_help_data->data[0].pg_priority) ||
1353                    IS_DCBX_PFC_PRI_MIX_PAUSE(bp,
1354                                         pg_help_data->data[1].pg_priority)) {
1355                        /* If one PG contains both pauseable and
1356                         * non-pauseable priorities then ETS is disabled.
1357                         */
1358                        bnx2x_dcbx_separate_pauseable_from_non(bp, cos_data,
1359                                        pg_pri_orginal_spread, ets);
1360                        bp->dcbx_port_params.ets.enabled = false;
1361                        return;
1362                }
1363
1364                /* Pauseable */
1365                cos_data->data[0].pausable = true;
1366                /* Non pauseable. */
1367                cos_data->data[1].pausable = false;
1368                if (IS_DCBX_PFC_PRI_ONLY_PAUSE(bp,
1369                                pg_help_data->data[0].pg_priority)) {
1370                        /* 0 is pauseable */
1371                        cos_data->data[0].pri_join_mask =
1372                                pg_help_data->data[0].pg_priority;
1373                        pg[0] = pg_help_data->data[0].pg;
1374                        cos_data->data[1].pri_join_mask =
1375                                pg_help_data->data[1].pg_priority;
1376                        pg[1] = pg_help_data->data[1].pg;
1377                } else {/* 1 is pauseable */
1378                        cos_data->data[0].pri_join_mask =
1379                                pg_help_data->data[1].pg_priority;
1380                        pg[0] = pg_help_data->data[1].pg;
1381                        cos_data->data[1].pri_join_mask =
1382                                pg_help_data->data[0].pg_priority;
1383                        pg[1] = pg_help_data->data[0].pg;
1384                }
1385        } else {
1386                /* If there are only pauseable priorities or
1387                 * only non-pauseable, each PG goes to a queue.
1388                 */
1389                cos_data->data[0].pausable = cos_data->data[1].pausable =
1390                        IS_DCBX_PFC_PRI_ONLY_PAUSE(bp, pri_join_mask);
1391                cos_data->data[0].pri_join_mask =
1392                        pg_help_data->data[0].pg_priority;
1393                pg[0] = pg_help_data->data[0].pg;
1394                cos_data->data[1].pri_join_mask =
1395                        pg_help_data->data[1].pg_priority;
1396                pg[1] = pg_help_data->data[1].pg;
1397        }
1398
1399        /* There can be only one strict pg */
1400        for (i = 0 ; i < ARRAY_SIZE(pg); i++) {
1401                if (pg[i] < DCBX_MAX_NUM_PG_BW_ENTRIES)
1402                        cos_data->data[i].cos_bw =
1403                                DCBX_PG_BW_GET(ets->pg_bw_tbl, pg[i]);
1404                else
1405                        cos_data->data[i].strict =
1406                                                BNX2X_DCBX_STRICT_COS_HIGHEST;
1407        }
1408}
1409
1410static int bnx2x_dcbx_join_pgs(
1411                              struct bnx2x            *bp,
1412                              struct dcbx_ets_feature *ets,
1413                              struct pg_help_data     *pg_help_data,
1414                              uint8_t                      required_num_of_pg)
1415{
1416        uint8_t entry_joined    = pg_help_data->num_of_pg - 1;
1417        uint8_t entry_removed   = entry_joined + 1;
1418        uint8_t pg_joined       = 0;
1419
1420        if (required_num_of_pg == 0 || ARRAY_SIZE(pg_help_data->data)
1421                                                <= pg_help_data->num_of_pg) {
1422
1423                BNX2X_ERR("required_num_of_pg can't be zero\n");
1424                return -EINVAL;
1425        }
1426
1427        while (required_num_of_pg < pg_help_data->num_of_pg) {
1428                entry_joined = pg_help_data->num_of_pg - 2;
1429                entry_removed = entry_joined + 1;
1430                /* protect index */
1431                entry_removed %= ARRAY_SIZE(pg_help_data->data);
1432
1433                pg_help_data->data[entry_joined].pg_priority |=
1434                        pg_help_data->data[entry_removed].pg_priority;
1435
1436                pg_help_data->data[entry_joined].num_of_dif_pri +=
1437                        pg_help_data->data[entry_removed].num_of_dif_pri;
1438
1439                if (pg_help_data->data[entry_joined].pg == DCBX_STRICT_PRI_PG ||
1440                    pg_help_data->data[entry_removed].pg == DCBX_STRICT_PRI_PG)
1441                        /* Entries joined strict priority rules */
1442                        pg_help_data->data[entry_joined].pg =
1443                                                        DCBX_STRICT_PRI_PG;
1444                else {
1445                        /* Entries can be joined join BW */
1446                        pg_joined = DCBX_PG_BW_GET(ets->pg_bw_tbl,
1447                                        pg_help_data->data[entry_joined].pg) +
1448                                    DCBX_PG_BW_GET(ets->pg_bw_tbl,
1449                                        pg_help_data->data[entry_removed].pg);
1450
1451                        DCBX_PG_BW_SET(ets->pg_bw_tbl,
1452                                pg_help_data->data[entry_joined].pg, pg_joined);
1453                }
1454                /* Joined the entries */
1455                pg_help_data->num_of_pg--;
1456        }
1457
1458        return 0;
1459}
1460
1461static void bnx2x_dcbx_2cos_limit_cee_three_pg_to_cos_params(
1462                              struct bnx2x              *bp,
1463                              struct pg_help_data       *pg_help_data,
1464                              struct dcbx_ets_feature   *ets,
1465                              struct cos_help_data      *cos_data,
1466                              uint32_t                  *pg_pri_orginal_spread,
1467                              uint32_t                  pri_join_mask,
1468                              uint8_t                   num_of_dif_pri)
1469{
1470        uint8_t i = 0;
1471        uint32_t pri_tested = 0;
1472        uint8_t entry = 0;
1473        uint8_t pg_entry = 0;
1474        bool b_found_strict = false;
1475        uint8_t num_of_pri = LLFC_DRIVER_TRAFFIC_TYPE_MAX;
1476
1477        cos_data->data[0].pri_join_mask = cos_data->data[1].pri_join_mask = 0;
1478        /* If there are both pauseable and non-pauseable priorities,
1479         * the pauseable priorities go to the first queue and the
1480         * non-pauseable priorities go to the second queue.
1481         */
1482        if (IS_DCBX_PFC_PRI_MIX_PAUSE(bp, pri_join_mask))
1483                bnx2x_dcbx_separate_pauseable_from_non(bp,
1484                                cos_data, pg_pri_orginal_spread, ets);
1485        else {
1486                /* If two BW-limited PG-s were combined to one queue,
1487                 * the BW is their sum.
1488                 *
1489                 * If there are only pauseable priorities or only non-pauseable,
1490                 * and there are both BW-limited and non-BW-limited PG-s,
1491                 * the BW-limited PG/s go to one queue and the non-BW-limited
1492                 * PG/s go to the second queue.
1493                 *
1494                 * If there are only pauseable priorities or only non-pauseable
1495                 * and all are BW limited, then two priorities go to the first
1496                 * queue and one priority goes to the second queue.
1497                 *
1498                 * We will join this two cases:
1499                 * if one is BW limited it will go to the second queue
1500                 * otherwise the last priority will get it
1501                 */
1502
1503                cos_data->data[0].pausable = cos_data->data[1].pausable =
1504                        IS_DCBX_PFC_PRI_ONLY_PAUSE(bp, pri_join_mask);
1505
1506                for (i = 0 ; i < num_of_pri; i++) {
1507                        pri_tested = 1 << bp->dcbx_port_params.
1508                                app.traffic_type_priority[i];
1509                        pg_entry = (uint8_t)pg_pri_orginal_spread[bp->
1510                                dcbx_port_params.app.traffic_type_priority[i]];
1511
1512                        if (pg_entry < DCBX_MAX_NUM_PG_BW_ENTRIES) {
1513                                entry = 0;
1514
1515                                if (i == (num_of_pri-1) &&
1516                                    false == b_found_strict)
1517                                        /* last entry will be handled separately
1518                                         * If no priority is strict than last
1519                                         * entry goes to last queue.
1520                                         */
1521                                        entry = 1;
1522                                cos_data->data[entry].pri_join_mask |=
1523                                                                pri_tested;
1524                                bnx2x_dcbx_add_to_cos_bw(bp,
1525                                        &cos_data->data[entry],
1526                                        DCBX_PG_BW_GET(ets->pg_bw_tbl,
1527                                                       pg_entry));
1528                        } else {
1529                                b_found_strict = true;
1530                                cos_data->data[1].pri_join_mask |= pri_tested;
1531                                /* If we join a group and one is strict
1532                                 * than the bw rules
1533                                 */
1534                                cos_data->data[1].strict =
1535                                        BNX2X_DCBX_STRICT_COS_HIGHEST;
1536                        }
1537                }
1538        }
1539}
1540
1541static void bnx2x_dcbx_2cos_limit_cee_fill_cos_params(struct bnx2x *bp,
1542                                       struct pg_help_data *help_data,
1543                                       struct dcbx_ets_feature *ets,
1544                                       struct cos_help_data *cos_data,
1545                                       uint32_t *pg_pri_orginal_spread,
1546                                       uint32_t pri_join_mask,
1547                                       uint8_t num_of_dif_pri)
1548{
1549        /* default E2 settings */
1550        cos_data->num_of_cos = DCBX_COS_MAX_NUM_E2;
1551
1552        switch (help_data->num_of_pg) {
1553        case 1:
1554                bnx2x_dcbx_2cos_limit_cee_single_pg_to_cos_params(
1555                                               bp,
1556                                               help_data,
1557                                               cos_data,
1558                                               pri_join_mask,
1559                                               num_of_dif_pri);
1560                break;
1561        case 2:
1562                bnx2x_dcbx_2cos_limit_cee_two_pg_to_cos_params(
1563                                            bp,
1564                                            help_data,
1565                                            ets,
1566                                            cos_data,
1567                                            pg_pri_orginal_spread,
1568                                            pri_join_mask,
1569                                            num_of_dif_pri);
1570                break;
1571
1572        case 3:
1573                bnx2x_dcbx_2cos_limit_cee_three_pg_to_cos_params(
1574                                              bp,
1575                                              help_data,
1576                                              ets,
1577                                              cos_data,
1578                                              pg_pri_orginal_spread,
1579                                              pri_join_mask,
1580                                              num_of_dif_pri);
1581                break;
1582        default:
1583                BNX2X_ERR("Wrong pg_help_data.num_of_pg\n");
1584                bnx2x_dcbx_ets_disabled_entry_data(bp,
1585                                                   cos_data, pri_join_mask);
1586        }
1587}
1588
1589static int bnx2x_dcbx_spread_strict_pri(struct bnx2x *bp,
1590                                        struct cos_help_data *cos_data,
1591                                        uint8_t entry,
1592                                        uint8_t num_spread_of_entries,
1593                                        uint8_t strict_app_pris)
1594{
1595        uint8_t strict_pri = BNX2X_DCBX_STRICT_COS_HIGHEST;
1596        uint8_t num_of_app_pri = MAX_PFC_PRIORITIES;
1597        uint8_t app_pri_bit = 0;
1598
1599        while (num_spread_of_entries && num_of_app_pri > 0) {
1600                app_pri_bit = 1 << (num_of_app_pri - 1);
1601                if (app_pri_bit & strict_app_pris) {
1602                        struct cos_entry_help_data *data = &cos_data->
1603                                                                data[entry];
1604                        num_spread_of_entries--;
1605                        if (num_spread_of_entries == 0) {
1606                                /* last entry needed put all the entries left */
1607                                data->cos_bw = DCBX_INVALID_COS_BW;
1608                                data->strict = strict_pri;
1609                                data->pri_join_mask = strict_app_pris;
1610                                data->pausable = DCBX_IS_PFC_PRI_SOME_PAUSE(bp,
1611                                                        data->pri_join_mask);
1612                        } else {
1613                                strict_app_pris &= ~app_pri_bit;
1614
1615                                data->cos_bw = DCBX_INVALID_COS_BW;
1616                                data->strict = strict_pri;
1617                                data->pri_join_mask = app_pri_bit;
1618                                data->pausable = DCBX_IS_PFC_PRI_SOME_PAUSE(bp,
1619                                                        data->pri_join_mask);
1620                        }
1621
1622                        strict_pri =
1623                            BNX2X_DCBX_STRICT_COS_NEXT_LOWER_PRI(strict_pri);
1624                        entry++;
1625                }
1626
1627                num_of_app_pri--;
1628        }
1629
1630        if (num_spread_of_entries) {
1631                BNX2X_ERR("Didn't succeed to spread strict priorities\n");
1632                return -EINVAL;
1633        }
1634
1635        return 0;
1636}
1637
1638static uint8_t bnx2x_dcbx_cee_fill_strict_pri(struct bnx2x *bp,
1639                                         struct cos_help_data *cos_data,
1640                                         uint8_t entry,
1641                                         uint8_t num_spread_of_entries,
1642                                         uint8_t strict_app_pris)
1643{
1644        if (bnx2x_dcbx_spread_strict_pri(bp, cos_data, entry,
1645                                         num_spread_of_entries,
1646                                         strict_app_pris)) {
1647                struct cos_entry_help_data *data = &cos_data->
1648                                                    data[entry];
1649                /* Fill BW entry */
1650                data->cos_bw = DCBX_INVALID_COS_BW;
1651                data->strict = BNX2X_DCBX_STRICT_COS_HIGHEST;
1652                data->pri_join_mask = strict_app_pris;
1653                data->pausable = DCBX_IS_PFC_PRI_SOME_PAUSE(bp,
1654                                 data->pri_join_mask);
1655                return 1;
1656        }
1657
1658        return num_spread_of_entries;
1659}
1660
1661static void bnx2x_dcbx_cee_fill_cos_params(struct bnx2x *bp,
1662                                           struct pg_help_data *help_data,
1663                                           struct dcbx_ets_feature *ets,
1664                                           struct cos_help_data *cos_data,
1665                                           uint32_t pri_join_mask)
1666
1667{
1668        uint8_t need_num_of_entries = 0;
1669        uint8_t i = 0;
1670        uint8_t entry = 0;
1671
1672        /*
1673         * if the number of requested PG-s in CEE is greater than 3
1674         * then the results are not determined since this is a violation
1675         * of the standard.
1676         */
1677        if (help_data->num_of_pg > DCBX_COS_MAX_NUM_E3B0) {
1678                if (bnx2x_dcbx_join_pgs(bp, ets, help_data,
1679                                        DCBX_COS_MAX_NUM_E3B0)) {
1680                        BNX2X_ERR("Unable to reduce the number of PGs - we will disables ETS\n");
1681                        bnx2x_dcbx_ets_disabled_entry_data(bp, cos_data,
1682                                                           pri_join_mask);
1683                        return;
1684                }
1685        }
1686
1687        for (i = 0 ; i < help_data->num_of_pg; i++) {
1688                struct pg_entry_help_data *pg =  &help_data->data[i];
1689                if (pg->pg < DCBX_MAX_NUM_PG_BW_ENTRIES) {
1690                        struct cos_entry_help_data *data = &cos_data->
1691                                                            data[entry];
1692                        /* Fill BW entry */
1693                        data->cos_bw = DCBX_PG_BW_GET(ets->pg_bw_tbl, pg->pg);
1694                        data->strict = BNX2X_DCBX_STRICT_INVALID;
1695                        data->pri_join_mask = pg->pg_priority;
1696                        data->pausable = DCBX_IS_PFC_PRI_SOME_PAUSE(bp,
1697                                                data->pri_join_mask);
1698
1699                        entry++;
1700                } else {
1701                        need_num_of_entries =  MIN_T(uint8_t,
1702                                                     (uint8_t)pg->num_of_dif_pri,
1703                                                     (uint8_t)DCBX_COS_MAX_NUM_E3B0 - help_data->num_of_pg + 1);
1704                        /*
1705                         * If there are still VOQ-s which have no associated PG,
1706                         * then associate these VOQ-s to PG15. These PG-s will
1707                         * be used for SP between priorities on PG15.
1708                         */
1709                        entry += bnx2x_dcbx_cee_fill_strict_pri(bp, cos_data,
1710                                entry, need_num_of_entries, pg->pg_priority);
1711                }
1712        }
1713
1714        /* the entry will represent the number of COSes used */
1715        cos_data->num_of_cos = entry;
1716}
1717static void bnx2x_dcbx_fill_cos_params(struct bnx2x *bp,
1718                                       struct pg_help_data *help_data,
1719                                       struct dcbx_ets_feature *ets,
1720                                       uint32_t *pg_pri_orginal_spread)
1721{
1722        struct cos_help_data         cos_data;
1723        uint8_t                    i                           = 0;
1724        uint32_t                   pri_join_mask               = 0;
1725        uint8_t                    num_of_dif_pri              = 0;
1726
1727        memset(&cos_data, 0, sizeof(cos_data));
1728
1729        /* Validate the pg value */
1730        for (i = 0; i < help_data->num_of_pg ; i++) {
1731                if (DCBX_STRICT_PRIORITY != help_data->data[i].pg &&
1732                    DCBX_MAX_NUM_PG_BW_ENTRIES <= help_data->data[i].pg)
1733                        BNX2X_ERR("Invalid pg[%d] data %x\n", i,
1734                                  help_data->data[i].pg);
1735                pri_join_mask   |=  help_data->data[i].pg_priority;
1736                num_of_dif_pri  += help_data->data[i].num_of_dif_pri;
1737        }
1738
1739        /* defaults */
1740        cos_data.num_of_cos = 1;
1741        for (i = 0; i < ARRAY_SIZE(cos_data.data); i++) {
1742                cos_data.data[i].pri_join_mask = 0;
1743                cos_data.data[i].pausable = false;
1744                cos_data.data[i].strict = BNX2X_DCBX_STRICT_INVALID;
1745                cos_data.data[i].cos_bw = DCBX_INVALID_COS_BW;
1746        }
1747
1748        if (CHIP_IS_E3B0(bp))
1749                bnx2x_dcbx_cee_fill_cos_params(bp, help_data, ets,
1750                                               &cos_data, pri_join_mask);
1751        else /* E2 + E3A0 */
1752                bnx2x_dcbx_2cos_limit_cee_fill_cos_params(bp,
1753                                                          help_data, ets,
1754                                                          &cos_data,
1755                                                          pg_pri_orginal_spread,
1756                                                          pri_join_mask,
1757                                                          num_of_dif_pri);
1758
1759        for (i = 0; i < cos_data.num_of_cos ; i++) {
1760                struct bnx2x_dcbx_cos_params *p =
1761                        &bp->dcbx_port_params.ets.cos_params[i];
1762
1763                p->strict = cos_data.data[i].strict;
1764                p->bw_tbl = cos_data.data[i].cos_bw;
1765                p->pri_bitmask = cos_data.data[i].pri_join_mask;
1766                p->pauseable = cos_data.data[i].pausable;
1767
1768                /* sanity */
1769                if (p->bw_tbl != DCBX_INVALID_COS_BW ||
1770                    p->strict != BNX2X_DCBX_STRICT_INVALID) {
1771                        if (p->pri_bitmask == 0)
1772                                BNX2X_ERR("Invalid pri_bitmask for %d\n", i);
1773
1774                        if (CHIP_IS_E2(bp) || CHIP_IS_E3A0(bp)) {
1775
1776                                if (p->pauseable &&
1777                                    DCBX_PFC_PRI_GET_NON_PAUSE(bp,
1778                                                p->pri_bitmask) != 0)
1779                                        BNX2X_ERR("Inconsistent config for pausable COS %d\n",
1780                                                  i);
1781
1782                                if (!p->pauseable &&
1783                                    DCBX_PFC_PRI_GET_PAUSE(bp,
1784                                                p->pri_bitmask) != 0)
1785                                        BNX2X_ERR("Inconsistent config for nonpausable COS %d\n",
1786                                                  i);
1787                        }
1788                }
1789
1790                if (p->pauseable)
1791                        DP(BNX2X_MSG_DCB, "COS %d PAUSABLE prijoinmask 0x%x\n",
1792                                  i, cos_data.data[i].pri_join_mask);
1793                else
1794                        DP(BNX2X_MSG_DCB,
1795                           "COS %d NONPAUSABLE prijoinmask 0x%x\n",
1796                           i, cos_data.data[i].pri_join_mask);
1797        }
1798
1799        bp->dcbx_port_params.ets.num_of_cos = cos_data.num_of_cos ;
1800}
1801
1802static void bnx2x_dcbx_get_ets_pri_pg_tbl(struct bnx2x *bp,
1803                                uint32_t *set_configuration_ets_pg,
1804                                uint32_t *pri_pg_tbl)
1805{
1806        int i;
1807
1808        for (i = 0; i < DCBX_MAX_NUM_PRI_PG_ENTRIES; i++) {
1809                set_configuration_ets_pg[i] = DCBX_PRI_PG_GET(pri_pg_tbl, i);
1810
1811                DP(BNX2X_MSG_DCB, "set_configuration_ets_pg[%d] = 0x%x\n",
1812                   i, set_configuration_ets_pg[i]);
1813        }
1814}
1815
1816static void bnx2x_dcbx_fw_struct(struct bnx2x *bp,
1817                                 struct bnx2x_func_tx_start_params *pfc_fw_cfg)
1818{
1819        uint16_t pri_bit = 0;
1820        uint8_t cos = 0, pri = 0;
1821        struct priority_cos *tt2cos;
1822        uint32_t *ttp = bp->dcbx_port_params.app.traffic_type_priority;
1823        int mfw_configured = SHMEM2_HAS(bp, drv_flags) &&
1824                             GET_FLAGS(SHMEM2_RD(bp, drv_flags),
1825                                       1 << DRV_FLAGS_DCB_MFW_CONFIGURED);
1826
1827        memset(pfc_fw_cfg, 0, sizeof(*pfc_fw_cfg));
1828
1829        /* to disable DCB - the structure must be zeroed */
1830        if ((bp->dcbx_error & DCBX_REMOTE_MIB_ERROR) && !mfw_configured)
1831                return;
1832
1833        /*shortcut*/
1834        tt2cos = pfc_fw_cfg->traffic_type_to_priority_cos;
1835
1836        /* Fw version should be incremented each update */
1837        pfc_fw_cfg->dcb_version = ++bp->dcb_version;
1838        pfc_fw_cfg->dcb_enabled = 1;
1839
1840        /* Fill priority parameters */
1841        for (pri = 0; pri < LLFC_DRIVER_TRAFFIC_TYPE_MAX; pri++) {
1842                tt2cos[pri].priority = ttp[pri];
1843                pri_bit = 1 << tt2cos[pri].priority;
1844
1845                /* Fill COS parameters based on COS calculated to
1846                 * make it more general for future use */
1847                for (cos = 0; cos < bp->dcbx_port_params.ets.num_of_cos; cos++)
1848                        if (bp->dcbx_port_params.ets.cos_params[cos].
1849                                                pri_bitmask & pri_bit)
1850                                        tt2cos[pri].cos = cos;
1851        }
1852
1853        /* we never want the FW to add a 0 vlan tag */
1854        pfc_fw_cfg->dont_add_pri_0_en = 1;
1855
1856        bnx2x_dcbx_print_cos_params(bp, pfc_fw_cfg);
1857}
1858
1859void bnx2x_dcbx_pmf_update(struct bnx2x *bp)
1860{
1861        /* if we need to synchronize DCBX result from prev PMF
1862         * read it from shmem and update bp and netdev accordingly
1863         */
1864        if (SHMEM2_HAS(bp, drv_flags) &&
1865           GET_FLAGS(SHMEM2_RD(bp, drv_flags), 1 << DRV_FLAGS_DCB_CONFIGURED)) {
1866                /* Read neg results if dcbx is in the FW */
1867                if (bnx2x_dcbx_read_shmem_neg_results(bp))
1868                        return;
1869
1870                bnx2x_dump_dcbx_drv_param(bp, &bp->dcbx_local_feat,
1871                                          bp->dcbx_error);
1872                bnx2x_get_dcbx_drv_param(bp, &bp->dcbx_local_feat,
1873                                         bp->dcbx_error);
1874#ifdef BCM_DCBNL
1875                /*
1876                 * Add new app tlvs to dcbnl
1877                 */
1878                bnx2x_dcbnl_update_applist(bp, false);
1879                /*
1880                 * Send a notification for the new negotiated parameters
1881                 */
1882                dcbnl_cee_notify(bp->dev, RTM_GETDCB, DCB_CMD_CEE_GET, 0, 0);
1883#endif
1884                /*
1885                 * reconfigure the netdevice with the results of the new
1886                 * dcbx negotiation.
1887                 */
1888                bnx2x_dcbx_update_tc_mapping(bp);
1889        }
1890}
1891
1892/* DCB netlink */
1893#ifdef BCM_DCBNL
1894
1895#define BNX2X_DCBX_CAPS         (DCB_CAP_DCBX_LLD_MANAGED | \
1896                                DCB_CAP_DCBX_VER_CEE | DCB_CAP_DCBX_STATIC)
1897
1898static inline bool bnx2x_dcbnl_set_valid(struct bnx2x *bp)
1899{
1900        /* validate dcbnl call that may change HW state:
1901         * DCB is on and DCBX mode was SUCCESSFULLY set by the user.
1902         */
1903        return bp->dcb_state && bp->dcbx_mode_uset;
1904}
1905
1906static uint8_t bnx2x_dcbnl_get_state(struct ether *netdev)
1907{
1908        struct bnx2x *bp = netdev_priv(netdev);
1909        DP(BNX2X_MSG_DCB, "state = %d\n", bp->dcb_state);
1910        return bp->dcb_state;
1911}
1912
1913static uint8_t bnx2x_dcbnl_set_state(struct ether *netdev, uint8_t state)
1914{
1915        struct bnx2x *bp = netdev_priv(netdev);
1916        DP(BNX2X_MSG_DCB, "state = %s\n", state ? "on" : "off");
1917
1918        /* Fail to set state to "enabled" if dcbx is disabled in nvram */
1919        if (state && ((bp->dcbx_enabled == BNX2X_DCBX_ENABLED_OFF) ||
1920                      (bp->dcbx_enabled == BNX2X_DCBX_ENABLED_INVALID))) {
1921                DP(BNX2X_MSG_DCB, "Can not set dcbx to enabled while it is disabled in nvm\n");
1922                return 1;
1923        }
1924
1925        bnx2x_dcbx_set_state(bp, (state ? true : false), bp->dcbx_enabled);
1926        return 0;
1927}
1928
1929static void bnx2x_dcbnl_get_perm_hw_addr(struct ether *netdev,
1930                                         uint8_t *perm_addr)
1931{
1932        struct bnx2x *bp = netdev_priv(netdev);
1933        DP(BNX2X_MSG_DCB, "GET-PERM-ADDR\n");
1934
1935        /* first the HW mac address */
1936        memcpy(perm_addr, netdev->ea, netdev->addr_len);
1937
1938        if (CNIC_LOADED(bp))
1939                /* second SAN address */
1940                memcpy(perm_addr+netdev->addr_len, bp->fip_mac,
1941                       netdev->addr_len);
1942}
1943
1944static void bnx2x_dcbnl_set_pg_tccfg_tx(struct ether *netdev, int prio,
1945                                        uint8_t prio_type, uint8_t pgid,
1946                                        uint8_t bw_pct,
1947                                        uint8_t up_map)
1948{
1949        struct bnx2x *bp = netdev_priv(netdev);
1950
1951        DP(BNX2X_MSG_DCB, "prio[%d] = %d\n", prio, pgid);
1952        if (!bnx2x_dcbnl_set_valid(bp) || prio >= DCBX_MAX_NUM_PRI_PG_ENTRIES)
1953                return;
1954
1955        /**
1956         * bw_pct ignored -     band-width percentage devision between user
1957         *                      priorities within the same group is not
1958         *                      standard and hence not supported
1959         *
1960         * prio_type ignored -  priority levels within the same group are not
1961         *                      standard and hence are not supported. According
1962         *                      to the standard pgid 15 is dedicated to strict
1963         *                      priority traffic (on the port level).
1964         *
1965         * up_map ignored
1966         */
1967
1968        bp->dcbx_config_params.admin_configuration_ets_pg[prio] = pgid;
1969        bp->dcbx_config_params.admin_ets_configuration_tx_enable = 1;
1970}
1971
1972static void bnx2x_dcbnl_set_pg_bwgcfg_tx(struct ether *netdev,
1973                                         int pgid, uint8_t bw_pct)
1974{
1975        struct bnx2x *bp = netdev_priv(netdev);
1976        DP(BNX2X_MSG_DCB, "pgid[%d] = %d\n", pgid, bw_pct);
1977
1978        if (!bnx2x_dcbnl_set_valid(bp) || pgid >= DCBX_MAX_NUM_PG_BW_ENTRIES)
1979                return;
1980
1981        bp->dcbx_config_params.admin_configuration_bw_precentage[pgid] = bw_pct;
1982        bp->dcbx_config_params.admin_ets_configuration_tx_enable = 1;
1983}
1984
1985static void bnx2x_dcbnl_set_pg_tccfg_rx(struct ether *netdev, int prio,
1986                                        uint8_t prio_type, uint8_t pgid,
1987                                        uint8_t bw_pct,
1988                                        uint8_t up_map)
1989{
1990        struct bnx2x *bp = netdev_priv(netdev);
1991        DP(BNX2X_MSG_DCB, "Nothing to set; No RX support\n");
1992}
1993
1994static void bnx2x_dcbnl_set_pg_bwgcfg_rx(struct ether *netdev,
1995                                         int pgid, uint8_t bw_pct)
1996{
1997        struct bnx2x *bp = netdev_priv(netdev);
1998        DP(BNX2X_MSG_DCB, "Nothing to set; No RX support\n");
1999}
2000
2001static void bnx2x_dcbnl_get_pg_tccfg_tx(struct ether *netdev, int prio,
2002                                        uint8_t *prio_type, uint8_t *pgid,
2003                                        uint8_t *bw_pct,
2004                                        uint8_t *up_map)
2005{
2006        struct bnx2x *bp = netdev_priv(netdev);
2007        DP(BNX2X_MSG_DCB, "prio = %d\n", prio);
2008
2009        /**
2010         * bw_pct ignored -     band-width percentage devision between user
2011         *                      priorities within the same group is not
2012         *                      standard and hence not supported
2013         *
2014         * prio_type ignored -  priority levels within the same group are not
2015         *                      standard and hence are not supported. According
2016         *                      to the standard pgid 15 is dedicated to strict
2017         *                      priority traffic (on the port level).
2018         *
2019         * up_map ignored
2020         */
2021        *up_map = *bw_pct = *prio_type = *pgid = 0;
2022
2023        if (!bp->dcb_state || prio >= DCBX_MAX_NUM_PRI_PG_ENTRIES)
2024                return;
2025
2026        *pgid = DCBX_PRI_PG_GET(bp->dcbx_local_feat.ets.pri_pg_tbl, prio);
2027}
2028
2029static void bnx2x_dcbnl_get_pg_bwgcfg_tx(struct ether *netdev,
2030                                         int pgid, uint8_t *bw_pct)
2031{
2032        struct bnx2x *bp = netdev_priv(netdev);
2033        DP(BNX2X_MSG_DCB, "pgid = %d\n", pgid);
2034
2035        *bw_pct = 0;
2036
2037        if (!bp->dcb_state || pgid >= DCBX_MAX_NUM_PG_BW_ENTRIES)
2038                return;
2039
2040        *bw_pct = DCBX_PG_BW_GET(bp->dcbx_local_feat.ets.pg_bw_tbl, pgid);
2041}
2042
2043static void bnx2x_dcbnl_get_pg_tccfg_rx(struct ether *netdev, int prio,
2044                                        uint8_t *prio_type, uint8_t *pgid,
2045                                        uint8_t *bw_pct,
2046                                        uint8_t *up_map)
2047{
2048        struct bnx2x *bp = netdev_priv(netdev);
2049        DP(BNX2X_MSG_DCB, "Nothing to get; No RX support\n");
2050
2051        *prio_type = *pgid = *bw_pct = *up_map = 0;
2052}
2053
2054static void bnx2x_dcbnl_get_pg_bwgcfg_rx(struct ether *netdev,
2055                                         int pgid, uint8_t *bw_pct)
2056{
2057        struct bnx2x *bp = netdev_priv(netdev);
2058        DP(BNX2X_MSG_DCB, "Nothing to get; No RX support\n");
2059
2060        *bw_pct = 0;
2061}
2062
2063static void bnx2x_dcbnl_set_pfc_cfg(struct ether *netdev, int prio,
2064                                    uint8_t setting)
2065{
2066        struct bnx2x *bp = netdev_priv(netdev);
2067        DP(BNX2X_MSG_DCB, "prio[%d] = %d\n", prio, setting);
2068
2069        if (!bnx2x_dcbnl_set_valid(bp) || prio >= MAX_PFC_PRIORITIES)
2070                return;
2071
2072        if (setting) {
2073                bp->dcbx_config_params.admin_pfc_bitmap |= (1 << prio);
2074                bp->dcbx_config_params.admin_pfc_tx_enable = 1;
2075        } else {
2076                bp->dcbx_config_params.admin_pfc_bitmap &= ~(1 << prio);
2077        }
2078}
2079
2080static void bnx2x_dcbnl_get_pfc_cfg(struct ether *netdev, int prio,
2081                                    uint8_t *setting)
2082{
2083        struct bnx2x *bp = netdev_priv(netdev);
2084        DP(BNX2X_MSG_DCB, "prio = %d\n", prio);
2085
2086        *setting = 0;
2087
2088        if (!bp->dcb_state || prio >= MAX_PFC_PRIORITIES)
2089                return;
2090
2091        *setting = (bp->dcbx_local_feat.pfc.pri_en_bitmap >> prio) & 0x1;
2092}
2093
2094static uint8_t bnx2x_dcbnl_set_all(struct ether *netdev)
2095{
2096        struct bnx2x *bp = netdev_priv(netdev);
2097
2098        DP(BNX2X_MSG_DCB, "SET-ALL\n");
2099
2100        if (!bnx2x_dcbnl_set_valid(bp))
2101                return 1;
2102
2103        if (bp->recovery_state != BNX2X_RECOVERY_DONE) {
2104                netdev_err(bp->dev,
2105                           "Handling parity error recovery. Try again later\n");
2106                return 1;
2107        }
2108        if (netif_running(bp->dev)) {
2109                bnx2x_update_drv_flags(bp,
2110                                       1 << DRV_FLAGS_DCB_MFW_CONFIGURED,
2111                                       1);
2112                bnx2x_dcbx_init(bp, true);
2113        }
2114        DP(BNX2X_MSG_DCB, "set_dcbx_params done\n");
2115
2116        return 0;
2117}
2118
2119static uint8_t bnx2x_dcbnl_get_cap(struct ether *netdev, int capid,
2120                                   uint8_t *cap)
2121{
2122        struct bnx2x *bp = netdev_priv(netdev);
2123        uint8_t rval = 0;
2124
2125        if (bp->dcb_state) {
2126                switch (capid) {
2127                case DCB_CAP_ATTR_PG:
2128                        *cap = true;
2129                        break;
2130                case DCB_CAP_ATTR_PFC:
2131                        *cap = true;
2132                        break;
2133                case DCB_CAP_ATTR_UP2TC:
2134                        *cap = false;
2135                        break;
2136                case DCB_CAP_ATTR_PG_TCS:
2137                        *cap = 0x80;    /* 8 priorities for PGs */
2138                        break;
2139                case DCB_CAP_ATTR_PFC_TCS:
2140                        *cap = 0x80;    /* 8 priorities for PFC */
2141                        break;
2142                case DCB_CAP_ATTR_GSP:
2143                        *cap = true;
2144                        break;
2145                case DCB_CAP_ATTR_BCN:
2146                        *cap = false;
2147                        break;
2148                case DCB_CAP_ATTR_DCBX:
2149                        *cap = BNX2X_DCBX_CAPS;
2150                        break;
2151                default:
2152                        BNX2X_ERR("Non valid capability ID\n");
2153                        rval = 1;
2154                        break;
2155                }
2156        } else {
2157                DP(BNX2X_MSG_DCB, "DCB disabled\n");
2158                rval = 1;
2159        }
2160
2161        DP(BNX2X_MSG_DCB, "capid %d:%x\n", capid, *cap);
2162        return rval;
2163}
2164
2165static int bnx2x_dcbnl_get_numtcs(struct ether *netdev, int tcid,
2166                                  uint8_t *num)
2167{
2168        struct bnx2x *bp = netdev_priv(netdev);
2169        uint8_t rval = 0;
2170
2171        DP(BNX2X_MSG_DCB, "tcid %d\n", tcid);
2172
2173        if (bp->dcb_state) {
2174                switch (tcid) {
2175                case DCB_NUMTCS_ATTR_PG:
2176                        *num = CHIP_IS_E3B0(bp) ? DCBX_COS_MAX_NUM_E3B0 :
2177                                                  DCBX_COS_MAX_NUM_E2;
2178                        break;
2179                case DCB_NUMTCS_ATTR_PFC:
2180                        *num = CHIP_IS_E3B0(bp) ? DCBX_COS_MAX_NUM_E3B0 :
2181                                                  DCBX_COS_MAX_NUM_E2;
2182                        break;
2183                default:
2184                        BNX2X_ERR("Non valid TC-ID\n");
2185                        rval = 1;
2186                        break;
2187                }
2188        } else {
2189                DP(BNX2X_MSG_DCB, "DCB disabled\n");
2190                rval = 1;
2191        }
2192
2193        return rval;
2194}
2195
2196static int bnx2x_dcbnl_set_numtcs(struct ether *netdev, int tcid,
2197                                  uint8_t num)
2198{
2199        struct bnx2x *bp = netdev_priv(netdev);
2200        DP(BNX2X_MSG_DCB, "num tcs = %d; Not supported\n", num);
2201        return -EINVAL;
2202}
2203
2204static uint8_t bnx2x_dcbnl_get_pfc_state(struct ether *netdev)
2205{
2206        struct bnx2x *bp = netdev_priv(netdev);
2207        DP(BNX2X_MSG_DCB, "state = %d\n", bp->dcbx_local_feat.pfc.enabled);
2208
2209        if (!bp->dcb_state)
2210                return 0;
2211
2212        return bp->dcbx_local_feat.pfc.enabled;
2213}
2214
2215static void bnx2x_dcbnl_set_pfc_state(struct ether *netdev,
2216                                      uint8_t state)
2217{
2218        struct bnx2x *bp = netdev_priv(netdev);
2219        DP(BNX2X_MSG_DCB, "state = %s\n", state ? "on" : "off");
2220
2221        if (!bnx2x_dcbnl_set_valid(bp))
2222                return;
2223
2224        bp->dcbx_config_params.admin_pfc_tx_enable =
2225        bp->dcbx_config_params.admin_pfc_enable = (state ? 1 : 0);
2226}
2227
2228static void bnx2x_admin_app_set_ent(
2229        struct bnx2x_admin_priority_app_table *app_ent,
2230        uint8_t idtype, uint16_t idval, uint8_t up)
2231{
2232        app_ent->valid = 1;
2233
2234        switch (idtype) {
2235        case DCB_APP_IDTYPE_ETHTYPE:
2236                app_ent->traffic_type = TRAFFIC_TYPE_ETH;
2237                break;
2238        case DCB_APP_IDTYPE_PORTNUM:
2239                app_ent->traffic_type = TRAFFIC_TYPE_PORT;
2240                break;
2241        default:
2242                break; /* never gets here */
2243        }
2244        app_ent->app_id = idval;
2245        app_ent->priority = up;
2246}
2247
2248static bool bnx2x_admin_app_is_equal(
2249        struct bnx2x_admin_priority_app_table *app_ent,
2250        uint8_t idtype, uint16_t idval)
2251{
2252        if (!app_ent->valid)
2253                return false;
2254
2255        switch (idtype) {
2256        case DCB_APP_IDTYPE_ETHTYPE:
2257                if (app_ent->traffic_type != TRAFFIC_TYPE_ETH)
2258                        return false;
2259                break;
2260        case DCB_APP_IDTYPE_PORTNUM:
2261                if (app_ent->traffic_type != TRAFFIC_TYPE_PORT)
2262                        return false;
2263                break;
2264        default:
2265                return false;
2266        }
2267        if (app_ent->app_id != idval)
2268                return false;
2269
2270        return true;
2271}
2272
2273static int bnx2x_set_admin_app_up(struct bnx2x *bp, uint8_t idtype,
2274                                  uint16_t idval, uint8_t 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
2310static int bnx2x_dcbnl_set_app_up(struct ether *netdev, uint8_t idtype,
2311                                  uint16_t idval, uint8_t 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
2335static uint8_t bnx2x_dcbnl_get_dcbx(struct ether *netdev)
2336{
2337        struct bnx2x *bp = netdev_priv(netdev);
2338        uint8_t 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
2348static uint8_t bnx2x_dcbnl_set_dcbx(struct ether *netdev, uint8_t 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
2375static uint8_t bnx2x_dcbnl_get_featcfg(struct ether *netdev, int featid,
2376                                  uint8_t *flags)
2377{
2378        struct bnx2x *bp = netdev_priv(netdev);
2379        uint8_t 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
2422static uint8_t bnx2x_dcbnl_set_featcfg(struct ether *netdev, int featid,
2423                                  uint8_t flags)
2424{
2425        struct bnx2x *bp = netdev_priv(netdev);
2426        uint8_t 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
2463static int bnx2x_peer_appinfo(struct ether *netdev,
2464                              struct dcb_peer_app_info *info,
2465                              uint16_t* app_count)
2466{
2467        int i;
2468        struct bnx2x *bp = netdev_priv(netdev);
2469
2470        DP(BNX2X_MSG_DCB, "APP-INFO\n");
2471
2472        info->willing = (bp->dcbx_remote_flags & DCBX_APP_REM_WILLING) ?: 0;
2473        info->error = (bp->dcbx_remote_flags & DCBX_APP_RX_ERROR) ?: 0;
2474        *app_count = 0;
2475
2476        for (i = 0; i < DCBX_MAX_APP_PROTOCOL; i++)
2477                if (bp->dcbx_remote_feat.app.app_pri_tbl[i].appBitfield &
2478                    DCBX_APP_ENTRY_VALID)
2479                        (*app_count)++;
2480        return 0;
2481}
2482
2483static int bnx2x_peer_apptable(struct ether *netdev,
2484                               struct dcb_app *table)
2485{
2486        int i, j;
2487        struct bnx2x *bp = netdev_priv(netdev);
2488
2489        DP(BNX2X_MSG_DCB, "APP-TABLE\n");
2490
2491        for (i = 0, j = 0; i < DCBX_MAX_APP_PROTOCOL; i++) {
2492                struct dcbx_app_priority_entry *ent =
2493                        &bp->dcbx_remote_feat.app.app_pri_tbl[i];
2494
2495                if (ent->appBitfield & DCBX_APP_ENTRY_VALID) {
2496                        table[j].selector = bnx2x_dcbx_dcbnl_app_idtype(ent);
2497                        table[j].priority = bnx2x_dcbx_dcbnl_app_up(ent);
2498                        table[j++].protocol = ent->app_id;
2499                }
2500        }
2501        return 0;
2502}
2503
2504static int bnx2x_cee_peer_getpg(struct ether *netdev, struct cee_pg *pg)
2505{
2506        int i;
2507        struct bnx2x *bp = netdev_priv(netdev);
2508
2509        pg->willing = (bp->dcbx_remote_flags & DCBX_ETS_REM_WILLING) ?: 0;
2510
2511        for (i = 0; i < CEE_DCBX_MAX_PGS; i++) {
2512                pg->pg_bw[i] =
2513                        DCBX_PG_BW_GET(bp->dcbx_remote_feat.ets.pg_bw_tbl, i);
2514                pg->prio_pg[i] =
2515                        DCBX_PRI_PG_GET(bp->dcbx_remote_feat.ets.pri_pg_tbl, i);
2516        }
2517        return 0;
2518}
2519
2520static int bnx2x_cee_peer_getpfc(struct ether *netdev,
2521                                 struct cee_pfc *pfc)
2522{
2523        struct bnx2x *bp = netdev_priv(netdev);
2524        pfc->tcs_supported = bp->dcbx_remote_feat.pfc.pfc_caps;
2525        pfc->pfc_en = bp->dcbx_remote_feat.pfc.pri_en_bitmap;
2526        return 0;
2527}
2528
2529const struct dcbnl_rtnl_ops bnx2x_dcbnl_ops = {
2530        .getstate               = bnx2x_dcbnl_get_state,
2531        .setstate               = bnx2x_dcbnl_set_state,
2532        .getpermhwaddr          = bnx2x_dcbnl_get_perm_hw_addr,
2533        .setpgtccfgtx           = bnx2x_dcbnl_set_pg_tccfg_tx,
2534        .setpgbwgcfgtx          = bnx2x_dcbnl_set_pg_bwgcfg_tx,
2535        .setpgtccfgrx           = bnx2x_dcbnl_set_pg_tccfg_rx,
2536        .setpgbwgcfgrx          = bnx2x_dcbnl_set_pg_bwgcfg_rx,
2537        .getpgtccfgtx           = bnx2x_dcbnl_get_pg_tccfg_tx,
2538        .getpgbwgcfgtx          = bnx2x_dcbnl_get_pg_bwgcfg_tx,
2539        .getpgtccfgrx           = bnx2x_dcbnl_get_pg_tccfg_rx,
2540        .getpgbwgcfgrx          = bnx2x_dcbnl_get_pg_bwgcfg_rx,
2541        .setpfccfg              = bnx2x_dcbnl_set_pfc_cfg,
2542        .getpfccfg              = bnx2x_dcbnl_get_pfc_cfg,
2543        .setall                 = bnx2x_dcbnl_set_all,
2544        .getcap                 = bnx2x_dcbnl_get_cap,
2545        .getnumtcs              = bnx2x_dcbnl_get_numtcs,
2546        .setnumtcs              = bnx2x_dcbnl_set_numtcs,
2547        .getpfcstate            = bnx2x_dcbnl_get_pfc_state,
2548        .setpfcstate            = bnx2x_dcbnl_set_pfc_state,
2549        .setapp                 = bnx2x_dcbnl_set_app_up,
2550        .getdcbx                = bnx2x_dcbnl_get_dcbx,
2551        .setdcbx                = bnx2x_dcbnl_set_dcbx,
2552        .getfeatcfg             = bnx2x_dcbnl_get_featcfg,
2553        .setfeatcfg             = bnx2x_dcbnl_set_featcfg,
2554        .peer_getappinfo        = bnx2x_peer_appinfo,
2555        .peer_getapptable       = bnx2x_peer_apptable,
2556        .cee_peer_getpg         = bnx2x_cee_peer_getpg,
2557        .cee_peer_getpfc        = bnx2x_cee_peer_getpfc,
2558};
2559
2560#endif /* BCM_DCBNL */
2561