1 /* bnx2x_dcb.c: Broadcom Everest network driver. 2 * 3 * Copyright 2009-2011 Broadcom Corporation 4 * 5 * Unless you and Broadcom execute a separate written software license 6 * agreement governing use of this software, this software is licensed to you 7 * under the terms of the GNU General Public License version 2, available 8 * at http://www.gnu.org/licenses/old-licenses/gpl-2.0.html (the "GPL"). 9 * 10 * Notwithstanding the above, under no circumstances may you combine this 11 * software in any way with any other Broadcom software provided under a 12 * license other than the GPL, without Broadcom's express prior written 13 * consent. 14 * 15 * Maintained by: Eilon Greenstein <eilong@broadcom.com> 16 * Written by: Dmitry Kravkov 17 * 18 */ 19 20 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt 21 22 #include <linux/netdevice.h> 23 #include <linux/types.h> 24 #include <linux/errno.h> 25 #include <linux/rtnetlink.h> 26 #include <net/dcbnl.h> 27 28 #include "bnx2x.h" 29 #include "bnx2x_cmn.h" 30 #include "bnx2x_dcb.h" 31 32 /* forward declarations of dcbx related functions */ 33 static int bnx2x_dcbx_stop_hw_tx(struct bnx2x *bp); 34 static void bnx2x_pfc_set_pfc(struct bnx2x *bp); 35 static void bnx2x_dcbx_update_ets_params(struct bnx2x *bp); 36 static int bnx2x_dcbx_resume_hw_tx(struct bnx2x *bp); 37 static void bnx2x_dcbx_get_ets_pri_pg_tbl(struct bnx2x *bp, 38 u32 *set_configuration_ets_pg, 39 u32 *pri_pg_tbl); 40 static void bnx2x_dcbx_get_num_pg_traf_type(struct bnx2x *bp, 41 u32 *pg_pri_orginal_spread, 42 struct pg_help_data *help_data); 43 static void bnx2x_dcbx_fill_cos_params(struct bnx2x *bp, 44 struct pg_help_data *help_data, 45 struct dcbx_ets_feature *ets, 46 u32 *pg_pri_orginal_spread); 47 static void bnx2x_dcbx_separate_pauseable_from_non(struct bnx2x *bp, 48 struct cos_help_data *cos_data, 49 u32 *pg_pri_orginal_spread, 50 struct dcbx_ets_feature *ets); 51 static void bnx2x_dcbx_fw_struct(struct bnx2x *bp, 52 struct bnx2x_func_tx_start_params*); 53 54 /* helpers: read/write len bytes from addr into buff by REG_RD/REG_WR */ 55 static void bnx2x_read_data(struct bnx2x *bp, u32 *buff, 56 u32 addr, u32 len) 57 { 58 int i; 59 for (i = 0; i < len; i += 4, buff++) 60 *buff = REG_RD(bp, addr + i); 61 } 62 63 static void bnx2x_write_data(struct bnx2x *bp, u32 *buff, 64 u32 addr, u32 len) 65 { 66 int i; 67 for (i = 0; i < len; i += 4, buff++) 68 REG_WR(bp, addr + i, *buff); 69 } 70 71 static void bnx2x_pfc_set(struct bnx2x *bp) 72 { 73 struct bnx2x_nig_brb_pfc_port_params pfc_params = {0}; 74 u32 pri_bit, val = 0; 75 int i; 76 77 pfc_params.num_of_rx_cos_priority_mask = 78 bp->dcbx_port_params.ets.num_of_cos; 79 80 /* Tx COS configuration */ 81 for (i = 0; i < bp->dcbx_port_params.ets.num_of_cos; i++) 82 /* 83 * We configure only the pauseable bits (non pauseable aren't 84 * configured at all) it's done to avoid false pauses from 85 * network 86 */ 87 pfc_params.rx_cos_priority_mask[i] = 88 bp->dcbx_port_params.ets.cos_params[i].pri_bitmask 89 & DCBX_PFC_PRI_PAUSE_MASK(bp); 90 91 /* 92 * Rx COS configuration 93 * Changing PFC RX configuration . 94 * In RX COS0 will always be configured to lossy and COS1 to lossless 95 */ 96 for (i = 0 ; i < MAX_PFC_PRIORITIES ; i++) { 97 pri_bit = 1 << i; 98 99 if (pri_bit & DCBX_PFC_PRI_PAUSE_MASK(bp)) 100 val |= 1 << (i * 4); 101 } 102 103 pfc_params.pkt_priority_to_cos = val; 104 105 /* RX COS0 */ 106 pfc_params.llfc_low_priority_classes = 0; 107 /* RX COS1 */ 108 pfc_params.llfc_high_priority_classes = DCBX_PFC_PRI_PAUSE_MASK(bp); 109 110 /* BRB configuration */ 111 pfc_params.cos0_pauseable = false; 112 pfc_params.cos1_pauseable = true; 113 114 bnx2x_acquire_phy_lock(bp); 115 bp->link_params.feature_config_flags |= FEATURE_CONFIG_PFC_ENABLED; 116 bnx2x_update_pfc(&bp->link_params, &bp->link_vars, &pfc_params); 117 bnx2x_release_phy_lock(bp); 118 } 119 120 static void bnx2x_pfc_clear(struct bnx2x *bp) 121 { 122 struct bnx2x_nig_brb_pfc_port_params nig_params = {0}; 123 nig_params.pause_enable = 1; 124 #ifdef BNX2X_SAFC 125 if (bp->flags & SAFC_TX_FLAG) { 126 u32 high = 0, low = 0; 127 int i; 128 129 for (i = 0; i < BNX2X_MAX_PRIORITY; i++) { 130 if (bp->pri_map[i] == 1) 131 high |= (1 << i); 132 if (bp->pri_map[i] == 0) 133 low |= (1 << i); 134 } 135 136 nig_params.llfc_low_priority_classes = high; 137 nig_params.llfc_low_priority_classes = low; 138 139 nig_params.pause_enable = 0; 140 nig_params.llfc_enable = 1; 141 nig_params.llfc_out_en = 1; 142 } 143 #endif /* BNX2X_SAFC */ 144 bnx2x_acquire_phy_lock(bp); 145 bp->link_params.feature_config_flags &= ~FEATURE_CONFIG_PFC_ENABLED; 146 bnx2x_update_pfc(&bp->link_params, &bp->link_vars, &nig_params); 147 bnx2x_release_phy_lock(bp); 148 } 149 150 static void bnx2x_dump_dcbx_drv_param(struct bnx2x *bp, 151 struct dcbx_features *features, 152 u32 error) 153 { 154 u8 i = 0; 155 DP(NETIF_MSG_LINK, "local_mib.error %x\n", error); 156 157 /* PG */ 158 DP(NETIF_MSG_LINK, 159 "local_mib.features.ets.enabled %x\n", features->ets.enabled); 160 for (i = 0; i < DCBX_MAX_NUM_PG_BW_ENTRIES; i++) 161 DP(NETIF_MSG_LINK, 162 "local_mib.features.ets.pg_bw_tbl[%d] %d\n", i, 163 DCBX_PG_BW_GET(features->ets.pg_bw_tbl, i)); 164 for (i = 0; i < DCBX_MAX_NUM_PRI_PG_ENTRIES; i++) 165 DP(NETIF_MSG_LINK, 166 "local_mib.features.ets.pri_pg_tbl[%d] %d\n", i, 167 DCBX_PRI_PG_GET(features->ets.pri_pg_tbl, i)); 168 169 /* pfc */ 170 DP(NETIF_MSG_LINK, "dcbx_features.pfc.pri_en_bitmap %x\n", 171 features->pfc.pri_en_bitmap); 172 DP(NETIF_MSG_LINK, "dcbx_features.pfc.pfc_caps %x\n", 173 features->pfc.pfc_caps); 174 DP(NETIF_MSG_LINK, "dcbx_features.pfc.enabled %x\n", 175 features->pfc.enabled); 176 177 DP(NETIF_MSG_LINK, "dcbx_features.app.default_pri %x\n", 178 features->app.default_pri); 179 DP(NETIF_MSG_LINK, "dcbx_features.app.tc_supported %x\n", 180 features->app.tc_supported); 181 DP(NETIF_MSG_LINK, "dcbx_features.app.enabled %x\n", 182 features->app.enabled); 183 for (i = 0; i < DCBX_MAX_APP_PROTOCOL; i++) { 184 DP(NETIF_MSG_LINK, 185 "dcbx_features.app.app_pri_tbl[%x].app_id %x\n", 186 i, features->app.app_pri_tbl[i].app_id); 187 DP(NETIF_MSG_LINK, 188 "dcbx_features.app.app_pri_tbl[%x].pri_bitmap %x\n", 189 i, features->app.app_pri_tbl[i].pri_bitmap); 190 DP(NETIF_MSG_LINK, 191 "dcbx_features.app.app_pri_tbl[%x].appBitfield %x\n", 192 i, features->app.app_pri_tbl[i].appBitfield); 193 } 194 } 195 196 static void bnx2x_dcbx_get_ap_priority(struct bnx2x *bp, 197 u8 pri_bitmap, 198 u8 llfc_traf_type) 199 { 200 u32 pri = MAX_PFC_PRIORITIES; 201 u32 index = MAX_PFC_PRIORITIES - 1; 202 u32 pri_mask; 203 u32 *ttp = bp->dcbx_port_params.app.traffic_type_priority; 204 205 /* Choose the highest priority */ 206 while ((MAX_PFC_PRIORITIES == pri) && (0 != index)) { 207 pri_mask = 1 << index; 208 if (GET_FLAGS(pri_bitmap, pri_mask)) 209 pri = index ; 210 index--; 211 } 212 213 if (pri < MAX_PFC_PRIORITIES) 214 ttp[llfc_traf_type] = max_t(u32, ttp[llfc_traf_type], pri); 215 } 216 217 static void bnx2x_dcbx_get_ap_feature(struct bnx2x *bp, 218 struct dcbx_app_priority_feature *app, 219 u32 error) { 220 u8 index; 221 u32 *ttp = bp->dcbx_port_params.app.traffic_type_priority; 222 223 if (GET_FLAGS(error, DCBX_LOCAL_APP_ERROR)) 224 DP(NETIF_MSG_LINK, "DCBX_LOCAL_APP_ERROR\n"); 225 226 if (GET_FLAGS(error, DCBX_LOCAL_APP_MISMATCH)) 227 DP(NETIF_MSG_LINK, "DCBX_LOCAL_APP_MISMATCH\n"); 228 229 if (app->enabled && 230 !GET_FLAGS(error, DCBX_LOCAL_APP_ERROR | DCBX_LOCAL_APP_MISMATCH)) { 231 232 bp->dcbx_port_params.app.enabled = true; 233 234 for (index = 0 ; index < LLFC_DRIVER_TRAFFIC_TYPE_MAX; index++) 235 ttp[index] = 0; 236 237 if (app->default_pri < MAX_PFC_PRIORITIES) 238 ttp[LLFC_TRAFFIC_TYPE_NW] = app->default_pri; 239 240 for (index = 0 ; index < DCBX_MAX_APP_PROTOCOL; index++) { 241 struct dcbx_app_priority_entry *entry = 242 app->app_pri_tbl; 243 244 if (GET_FLAGS(entry[index].appBitfield, 245 DCBX_APP_SF_ETH_TYPE) && 246 ETH_TYPE_FCOE == entry[index].app_id) 247 bnx2x_dcbx_get_ap_priority(bp, 248 entry[index].pri_bitmap, 249 LLFC_TRAFFIC_TYPE_FCOE); 250 251 if (GET_FLAGS(entry[index].appBitfield, 252 DCBX_APP_SF_PORT) && 253 TCP_PORT_ISCSI == entry[index].app_id) 254 bnx2x_dcbx_get_ap_priority(bp, 255 entry[index].pri_bitmap, 256 LLFC_TRAFFIC_TYPE_ISCSI); 257 } 258 } else { 259 DP(NETIF_MSG_LINK, "DCBX_LOCAL_APP_DISABLED\n"); 260 bp->dcbx_port_params.app.enabled = false; 261 for (index = 0 ; index < LLFC_DRIVER_TRAFFIC_TYPE_MAX; index++) 262 ttp[index] = INVALID_TRAFFIC_TYPE_PRIORITY; 263 } 264 } 265 266 static void bnx2x_dcbx_get_ets_feature(struct bnx2x *bp, 267 struct dcbx_ets_feature *ets, 268 u32 error) { 269 int i = 0; 270 u32 pg_pri_orginal_spread[DCBX_MAX_NUM_PG_BW_ENTRIES] = {0}; 271 struct pg_help_data pg_help_data; 272 struct bnx2x_dcbx_cos_params *cos_params = 273 bp->dcbx_port_params.ets.cos_params; 274 275 memset(&pg_help_data, 0, sizeof(struct pg_help_data)); 276 277 278 if (GET_FLAGS(error, DCBX_LOCAL_ETS_ERROR)) 279 DP(NETIF_MSG_LINK, "DCBX_LOCAL_ETS_ERROR\n"); 280 281 282 /* Clean up old settings of ets on COS */ 283 for (i = 0; i < ARRAY_SIZE(bp->dcbx_port_params.ets.cos_params) ; i++) { 284 cos_params[i].pauseable = false; 285 cos_params[i].strict = BNX2X_DCBX_STRICT_INVALID; 286 cos_params[i].bw_tbl = DCBX_INVALID_COS_BW; 287 cos_params[i].pri_bitmask = 0; 288 } 289 290 if (bp->dcbx_port_params.app.enabled && 291 !GET_FLAGS(error, DCBX_LOCAL_ETS_ERROR) && 292 ets->enabled) { 293 DP(NETIF_MSG_LINK, "DCBX_LOCAL_ETS_ENABLE\n"); 294 bp->dcbx_port_params.ets.enabled = true; 295 296 bnx2x_dcbx_get_ets_pri_pg_tbl(bp, 297 pg_pri_orginal_spread, 298 ets->pri_pg_tbl); 299 300 bnx2x_dcbx_get_num_pg_traf_type(bp, 301 pg_pri_orginal_spread, 302 &pg_help_data); 303 304 bnx2x_dcbx_fill_cos_params(bp, &pg_help_data, 305 ets, pg_pri_orginal_spread); 306 307 } else { 308 DP(NETIF_MSG_LINK, "DCBX_LOCAL_ETS_DISABLED\n"); 309 bp->dcbx_port_params.ets.enabled = false; 310 ets->pri_pg_tbl[0] = 0; 311 312 for (i = 0; i < DCBX_MAX_NUM_PRI_PG_ENTRIES ; i++) 313 DCBX_PG_BW_SET(ets->pg_bw_tbl, i, 1); 314 } 315 } 316 317 static void bnx2x_dcbx_get_pfc_feature(struct bnx2x *bp, 318 struct dcbx_pfc_feature *pfc, u32 error) 319 { 320 321 if (GET_FLAGS(error, DCBX_LOCAL_PFC_ERROR)) 322 DP(NETIF_MSG_LINK, "DCBX_LOCAL_PFC_ERROR\n"); 323 324 if (bp->dcbx_port_params.app.enabled && 325 !GET_FLAGS(error, DCBX_LOCAL_PFC_ERROR | DCBX_LOCAL_PFC_MISMATCH) && 326 pfc->enabled) { 327 bp->dcbx_port_params.pfc.enabled = true; 328 bp->dcbx_port_params.pfc.priority_non_pauseable_mask = 329 ~(pfc->pri_en_bitmap); 330 } else { 331 DP(NETIF_MSG_LINK, "DCBX_LOCAL_PFC_DISABLED\n"); 332 bp->dcbx_port_params.pfc.enabled = false; 333 bp->dcbx_port_params.pfc.priority_non_pauseable_mask = 0; 334 } 335 } 336 337 /* maps unmapped priorities to to the same COS as L2 */ 338 static void bnx2x_dcbx_map_nw(struct bnx2x *bp) 339 { 340 int i; 341 u32 unmapped = (1 << MAX_PFC_PRIORITIES) - 1; /* all ones */ 342 u32 *ttp = bp->dcbx_port_params.app.traffic_type_priority; 343 u32 nw_prio = 1 << ttp[LLFC_TRAFFIC_TYPE_NW]; 344 struct bnx2x_dcbx_cos_params *cos_params = 345 bp->dcbx_port_params.ets.cos_params; 346 347 /* get unmapped priorities by clearing mapped bits */ 348 for (i = 0; i < LLFC_DRIVER_TRAFFIC_TYPE_MAX; i++) 349 unmapped &= ~(1 << ttp[i]); 350 351 /* find cos for nw prio and extend it with unmapped */ 352 for (i = 0; i < ARRAY_SIZE(bp->dcbx_port_params.ets.cos_params); i++) { 353 if (cos_params[i].pri_bitmask & nw_prio) { 354 /* extend the bitmask with unmapped */ 355 DP(NETIF_MSG_LINK, 356 "cos %d extended with 0x%08x\n", i, unmapped); 357 cos_params[i].pri_bitmask |= unmapped; 358 break; 359 } 360 } 361 } 362 363 static void bnx2x_get_dcbx_drv_param(struct bnx2x *bp, 364 struct dcbx_features *features, 365 u32 error) 366 { 367 bnx2x_dcbx_get_ap_feature(bp, &features->app, error); 368 369 bnx2x_dcbx_get_pfc_feature(bp, &features->pfc, error); 370 371 bnx2x_dcbx_get_ets_feature(bp, &features->ets, error); 372 373 bnx2x_dcbx_map_nw(bp); 374 } 375 376 #define DCBX_LOCAL_MIB_MAX_TRY_READ (100) 377 static int bnx2x_dcbx_read_mib(struct bnx2x *bp, 378 u32 *base_mib_addr, 379 u32 offset, 380 int read_mib_type) 381 { 382 int max_try_read = 0; 383 u32 mib_size, prefix_seq_num, suffix_seq_num; 384 struct lldp_remote_mib *remote_mib ; 385 struct lldp_local_mib *local_mib; 386 387 388 switch (read_mib_type) { 389 case DCBX_READ_LOCAL_MIB: 390 mib_size = sizeof(struct lldp_local_mib); 391 break; 392 case DCBX_READ_REMOTE_MIB: 393 mib_size = sizeof(struct lldp_remote_mib); 394 break; 395 default: 396 return 1; /*error*/ 397 } 398 399 offset += BP_PORT(bp) * mib_size; 400 401 do { 402 bnx2x_read_data(bp, base_mib_addr, offset, mib_size); 403 404 max_try_read++; 405 406 switch (read_mib_type) { 407 case DCBX_READ_LOCAL_MIB: 408 local_mib = (struct lldp_local_mib *) base_mib_addr; 409 prefix_seq_num = local_mib->prefix_seq_num; 410 suffix_seq_num = local_mib->suffix_seq_num; 411 break; 412 case DCBX_READ_REMOTE_MIB: 413 remote_mib = (struct lldp_remote_mib *) base_mib_addr; 414 prefix_seq_num = remote_mib->prefix_seq_num; 415 suffix_seq_num = remote_mib->suffix_seq_num; 416 break; 417 default: 418 return 1; /*error*/ 419 } 420 } while ((prefix_seq_num != suffix_seq_num) && 421 (max_try_read < DCBX_LOCAL_MIB_MAX_TRY_READ)); 422 423 if (max_try_read >= DCBX_LOCAL_MIB_MAX_TRY_READ) { 424 BNX2X_ERR("MIB could not be read\n"); 425 return 1; 426 } 427 428 return 0; 429 } 430 431 static void bnx2x_pfc_set_pfc(struct bnx2x *bp) 432 { 433 if (bp->dcbx_port_params.pfc.enabled && 434 !(bp->dcbx_error & DCBX_REMOTE_MIB_ERROR)) 435 /* 436 * 1. Fills up common PFC structures if required 437 * 2. Configure NIG, MAC and BRB via the elink 438 */ 439 bnx2x_pfc_set(bp); 440 else 441 bnx2x_pfc_clear(bp); 442 } 443 444 static int bnx2x_dcbx_stop_hw_tx(struct bnx2x *bp) 445 { 446 struct bnx2x_func_state_params func_params = {0}; 447 448 func_params.f_obj = &bp->func_obj; 449 func_params.cmd = BNX2X_F_CMD_TX_STOP; 450 451 DP(NETIF_MSG_LINK, "STOP TRAFFIC\n"); 452 return bnx2x_func_state_change(bp, &func_params); 453 } 454 455 static int bnx2x_dcbx_resume_hw_tx(struct bnx2x *bp) 456 { 457 struct bnx2x_func_state_params func_params = {0}; 458 struct bnx2x_func_tx_start_params *tx_params = 459 &func_params.params.tx_start; 460 461 func_params.f_obj = &bp->func_obj; 462 func_params.cmd = BNX2X_F_CMD_TX_START; 463 464 bnx2x_dcbx_fw_struct(bp, tx_params); 465 466 DP(NETIF_MSG_LINK, "START TRAFFIC\n"); 467 return bnx2x_func_state_change(bp, &func_params); 468 } 469 470 static 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 u32 bw_tbl_0 = ets->cos_params[0].bw_tbl; 504 u32 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 */ 532 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 u8 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 (u8)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 } 569 570 static void bnx2x_dcbx_update_ets_params(struct bnx2x *bp) 571 { 572 bnx2x_ets_disabled(&bp->link_params, &bp->link_vars); 573 574 if (!bp->dcbx_port_params.ets.enabled || 575 (bp->dcbx_error & DCBX_REMOTE_MIB_ERROR)) 576 return; 577 578 if (CHIP_IS_E3B0(bp)) 579 bnx2x_dcbx_update_ets_config(bp); 580 else 581 bnx2x_dcbx_2cos_limit_update_ets_config(bp); 582 } 583 584 #ifdef BCM_DCBNL 585 static int bnx2x_dcbx_read_shmem_remote_mib(struct bnx2x *bp) 586 { 587 struct lldp_remote_mib remote_mib = {0}; 588 u32 dcbx_remote_mib_offset = SHMEM2_RD(bp, dcbx_remote_mib_offset); 589 int rc; 590 591 DP(NETIF_MSG_LINK, "dcbx_remote_mib_offset 0x%x\n", 592 dcbx_remote_mib_offset); 593 594 if (SHMEM_DCBX_REMOTE_MIB_NONE == dcbx_remote_mib_offset) { 595 BNX2X_ERR("FW doesn't support dcbx_remote_mib_offset\n"); 596 return -EINVAL; 597 } 598 599 rc = bnx2x_dcbx_read_mib(bp, (u32 *)&remote_mib, dcbx_remote_mib_offset, 600 DCBX_READ_REMOTE_MIB); 601 602 if (rc) { 603 BNX2X_ERR("Faild to read remote mib from FW\n"); 604 return rc; 605 } 606 607 /* save features and flags */ 608 bp->dcbx_remote_feat = remote_mib.features; 609 bp->dcbx_remote_flags = remote_mib.flags; 610 return 0; 611 } 612 #endif 613 614 static int bnx2x_dcbx_read_shmem_neg_results(struct bnx2x *bp) 615 { 616 struct lldp_local_mib local_mib = {0}; 617 u32 dcbx_neg_res_offset = SHMEM2_RD(bp, dcbx_neg_res_offset); 618 int rc; 619 620 DP(NETIF_MSG_LINK, "dcbx_neg_res_offset 0x%x\n", dcbx_neg_res_offset); 621 622 if (SHMEM_DCBX_NEG_RES_NONE == dcbx_neg_res_offset) { 623 BNX2X_ERR("FW doesn't support dcbx_neg_res_offset\n"); 624 return -EINVAL; 625 } 626 627 rc = bnx2x_dcbx_read_mib(bp, (u32 *)&local_mib, dcbx_neg_res_offset, 628 DCBX_READ_LOCAL_MIB); 629 630 if (rc) { 631 BNX2X_ERR("Faild to read local mib from FW\n"); 632 return rc; 633 } 634 635 /* save features and error */ 636 bp->dcbx_local_feat = local_mib.features; 637 bp->dcbx_error = local_mib.error; 638 return 0; 639 } 640 641 642 #ifdef BCM_DCBNL 643 static inline 644 u8 bnx2x_dcbx_dcbnl_app_up(struct dcbx_app_priority_entry *ent) 645 { 646 u8 pri; 647 648 /* Choose the highest priority */ 649 for (pri = MAX_PFC_PRIORITIES - 1; pri > 0; pri--) 650 if (ent->pri_bitmap & (1 << pri)) 651 break; 652 return pri; 653 } 654 655 static inline 656 u8 bnx2x_dcbx_dcbnl_app_idtype(struct dcbx_app_priority_entry *ent) 657 { 658 return ((ent->appBitfield & DCBX_APP_ENTRY_SF_MASK) == 659 DCBX_APP_SF_PORT) ? DCB_APP_IDTYPE_PORTNUM : 660 DCB_APP_IDTYPE_ETHTYPE; 661 } 662 663 int bnx2x_dcbnl_update_applist(struct bnx2x *bp, bool delall) 664 { 665 int i, err = 0; 666 667 for (i = 0; i < DCBX_MAX_APP_PROTOCOL && err == 0; i++) { 668 struct dcbx_app_priority_entry *ent = 669 &bp->dcbx_local_feat.app.app_pri_tbl[i]; 670 671 if (ent->appBitfield & DCBX_APP_ENTRY_VALID) { 672 u8 up = bnx2x_dcbx_dcbnl_app_up(ent); 673 674 /* avoid invalid user-priority */ 675 if (up) { 676 struct dcb_app app; 677 app.selector = bnx2x_dcbx_dcbnl_app_idtype(ent); 678 app.protocol = ent->app_id; 679 app.priority = delall ? 0 : up; 680 err = dcb_setapp(bp->dev, &app); 681 } 682 } 683 } 684 return err; 685 } 686 #endif 687 688 static inline void bnx2x_dcbx_update_tc_mapping(struct bnx2x *bp) 689 { 690 u8 prio, cos; 691 for (cos = 0; cos < bp->dcbx_port_params.ets.num_of_cos; cos++) { 692 for (prio = 0; prio < BNX2X_MAX_PRIORITY; prio++) { 693 if (bp->dcbx_port_params.ets.cos_params[cos].pri_bitmask 694 & (1 << prio)) { 695 bp->prio_to_cos[prio] = cos; 696 DP(NETIF_MSG_LINK, 697 "tx_mapping %d --> %d\n", prio, cos); 698 } 699 } 700 } 701 702 /* setup tc must be called under rtnl lock, but we can't take it here 703 * as we are handling an attetntion on a work queue which must be 704 * flushed at some rtnl-locked contexts (e.g. if down) 705 */ 706 if (!test_and_set_bit(BNX2X_SP_RTNL_SETUP_TC, &bp->sp_rtnl_state)) 707 schedule_delayed_work(&bp->sp_rtnl_task, 0); 708 } 709 710 void bnx2x_dcbx_set_params(struct bnx2x *bp, u32 state) 711 { 712 switch (state) { 713 case BNX2X_DCBX_STATE_NEG_RECEIVED: 714 { 715 DP(NETIF_MSG_LINK, "BNX2X_DCBX_STATE_NEG_RECEIVED\n"); 716 #ifdef BCM_DCBNL 717 /** 718 * Delete app tlvs from dcbnl before reading new 719 * negotiation results 720 */ 721 bnx2x_dcbnl_update_applist(bp, true); 722 723 /* Read rmeote mib if dcbx is in the FW */ 724 if (bnx2x_dcbx_read_shmem_remote_mib(bp)) 725 return; 726 #endif 727 /* Read neg results if dcbx is in the FW */ 728 if (bnx2x_dcbx_read_shmem_neg_results(bp)) 729 return; 730 731 bnx2x_dump_dcbx_drv_param(bp, &bp->dcbx_local_feat, 732 bp->dcbx_error); 733 734 bnx2x_get_dcbx_drv_param(bp, &bp->dcbx_local_feat, 735 bp->dcbx_error); 736 737 /* mark DCBX result for PMF migration */ 738 bnx2x_update_drv_flags(bp, DRV_FLAGS_DCB_CONFIGURED, 1); 739 #ifdef BCM_DCBNL 740 /* 741 * Add new app tlvs to dcbnl 742 */ 743 bnx2x_dcbnl_update_applist(bp, false); 744 #endif 745 /* 746 * reconfigure the netdevice with the results of the new 747 * dcbx negotiation. 748 */ 749 bnx2x_dcbx_update_tc_mapping(bp); 750 751 /* 752 * allow other funtions to update their netdevices 753 * accordingly 754 */ 755 if (IS_MF(bp)) 756 bnx2x_link_sync_notify(bp); 757 758 bnx2x_dcbx_stop_hw_tx(bp); 759 760 return; 761 } 762 case BNX2X_DCBX_STATE_TX_PAUSED: 763 DP(NETIF_MSG_LINK, "BNX2X_DCBX_STATE_TX_PAUSED\n"); 764 bnx2x_pfc_set_pfc(bp); 765 766 bnx2x_dcbx_update_ets_params(bp); 767 bnx2x_dcbx_resume_hw_tx(bp); 768 769 return; 770 case BNX2X_DCBX_STATE_TX_RELEASED: 771 DP(NETIF_MSG_LINK, "BNX2X_DCBX_STATE_TX_RELEASED\n"); 772 bnx2x_fw_command(bp, DRV_MSG_CODE_DCBX_PMF_DRV_OK, 0); 773 #ifdef BCM_DCBNL 774 /* 775 * Send a notification for the new negotiated parameters 776 */ 777 dcbnl_cee_notify(bp->dev, RTM_GETDCB, DCB_CMD_CEE_GET, 0, 0); 778 #endif 779 return; 780 default: 781 BNX2X_ERR("Unknown DCBX_STATE\n"); 782 } 783 } 784 785 #define LLDP_ADMIN_MIB_OFFSET(bp) (PORT_MAX*sizeof(struct lldp_params) + \ 786 BP_PORT(bp)*sizeof(struct lldp_admin_mib)) 787 788 static void bnx2x_dcbx_admin_mib_updated_params(struct bnx2x *bp, 789 u32 dcbx_lldp_params_offset) 790 { 791 struct lldp_admin_mib admin_mib; 792 u32 i, other_traf_type = PREDEFINED_APP_IDX_MAX, traf_type = 0; 793 u32 offset = dcbx_lldp_params_offset + LLDP_ADMIN_MIB_OFFSET(bp); 794 795 /*shortcuts*/ 796 struct dcbx_features *af = &admin_mib.features; 797 struct bnx2x_config_dcbx_params *dp = &bp->dcbx_config_params; 798 799 memset(&admin_mib, 0, sizeof(struct lldp_admin_mib)); 800 801 /* Read the data first */ 802 bnx2x_read_data(bp, (u32 *)&admin_mib, offset, 803 sizeof(struct lldp_admin_mib)); 804 805 if (bp->dcbx_enabled == BNX2X_DCBX_ENABLED_ON_NEG_ON) 806 SET_FLAGS(admin_mib.ver_cfg_flags, DCBX_DCBX_ENABLED); 807 else 808 RESET_FLAGS(admin_mib.ver_cfg_flags, DCBX_DCBX_ENABLED); 809 810 if (dp->overwrite_settings == BNX2X_DCBX_OVERWRITE_SETTINGS_ENABLE) { 811 812 RESET_FLAGS(admin_mib.ver_cfg_flags, DCBX_CEE_VERSION_MASK); 813 admin_mib.ver_cfg_flags |= 814 (dp->admin_dcbx_version << DCBX_CEE_VERSION_SHIFT) & 815 DCBX_CEE_VERSION_MASK; 816 817 af->ets.enabled = (u8)dp->admin_ets_enable; 818 819 af->pfc.enabled = (u8)dp->admin_pfc_enable; 820 821 /* FOR IEEE dp->admin_tc_supported_tx_enable */ 822 if (dp->admin_ets_configuration_tx_enable) 823 SET_FLAGS(admin_mib.ver_cfg_flags, 824 DCBX_ETS_CONFIG_TX_ENABLED); 825 else 826 RESET_FLAGS(admin_mib.ver_cfg_flags, 827 DCBX_ETS_CONFIG_TX_ENABLED); 828 /* For IEEE admin_ets_recommendation_tx_enable */ 829 if (dp->admin_pfc_tx_enable) 830 SET_FLAGS(admin_mib.ver_cfg_flags, 831 DCBX_PFC_CONFIG_TX_ENABLED); 832 else 833 RESET_FLAGS(admin_mib.ver_cfg_flags, 834 DCBX_PFC_CONFIG_TX_ENABLED); 835 836 if (dp->admin_application_priority_tx_enable) 837 SET_FLAGS(admin_mib.ver_cfg_flags, 838 DCBX_APP_CONFIG_TX_ENABLED); 839 else 840 RESET_FLAGS(admin_mib.ver_cfg_flags, 841 DCBX_APP_CONFIG_TX_ENABLED); 842 843 if (dp->admin_ets_willing) 844 SET_FLAGS(admin_mib.ver_cfg_flags, DCBX_ETS_WILLING); 845 else 846 RESET_FLAGS(admin_mib.ver_cfg_flags, DCBX_ETS_WILLING); 847 /* For IEEE admin_ets_reco_valid */ 848 if (dp->admin_pfc_willing) 849 SET_FLAGS(admin_mib.ver_cfg_flags, DCBX_PFC_WILLING); 850 else 851 RESET_FLAGS(admin_mib.ver_cfg_flags, DCBX_PFC_WILLING); 852 853 if (dp->admin_app_priority_willing) 854 SET_FLAGS(admin_mib.ver_cfg_flags, DCBX_APP_WILLING); 855 else 856 RESET_FLAGS(admin_mib.ver_cfg_flags, DCBX_APP_WILLING); 857 858 for (i = 0 ; i < DCBX_MAX_NUM_PG_BW_ENTRIES; i++) { 859 DCBX_PG_BW_SET(af->ets.pg_bw_tbl, i, 860 (u8)dp->admin_configuration_bw_precentage[i]); 861 862 DP(NETIF_MSG_LINK, "pg_bw_tbl[%d] = %02x\n", 863 i, DCBX_PG_BW_GET(af->ets.pg_bw_tbl, i)); 864 } 865 866 for (i = 0; i < DCBX_MAX_NUM_PRI_PG_ENTRIES; i++) { 867 DCBX_PRI_PG_SET(af->ets.pri_pg_tbl, i, 868 (u8)dp->admin_configuration_ets_pg[i]); 869 870 DP(NETIF_MSG_LINK, "pri_pg_tbl[%d] = %02x\n", 871 i, DCBX_PRI_PG_GET(af->ets.pri_pg_tbl, i)); 872 } 873 874 /*For IEEE admin_recommendation_bw_precentage 875 *For IEEE admin_recommendation_ets_pg */ 876 af->pfc.pri_en_bitmap = (u8)dp->admin_pfc_bitmap; 877 for (i = 0; i < DCBX_CONFIG_MAX_APP_PROTOCOL; i++) { 878 if (dp->admin_priority_app_table[i].valid) { 879 struct bnx2x_admin_priority_app_table *table = 880 dp->admin_priority_app_table; 881 if ((ETH_TYPE_FCOE == table[i].app_id) && 882 (TRAFFIC_TYPE_ETH == table[i].traffic_type)) 883 traf_type = FCOE_APP_IDX; 884 else if ((TCP_PORT_ISCSI == table[i].app_id) && 885 (TRAFFIC_TYPE_PORT == table[i].traffic_type)) 886 traf_type = ISCSI_APP_IDX; 887 else 888 traf_type = other_traf_type++; 889 890 af->app.app_pri_tbl[traf_type].app_id = 891 table[i].app_id; 892 893 af->app.app_pri_tbl[traf_type].pri_bitmap = 894 (u8)(1 << table[i].priority); 895 896 af->app.app_pri_tbl[traf_type].appBitfield = 897 (DCBX_APP_ENTRY_VALID); 898 899 af->app.app_pri_tbl[traf_type].appBitfield |= 900 (TRAFFIC_TYPE_ETH == table[i].traffic_type) ? 901 DCBX_APP_SF_ETH_TYPE : DCBX_APP_SF_PORT; 902 } 903 } 904 905 af->app.default_pri = (u8)dp->admin_default_priority; 906 907 } 908 909 /* Write the data. */ 910 bnx2x_write_data(bp, (u32 *)&admin_mib, offset, 911 sizeof(struct lldp_admin_mib)); 912 913 } 914 915 void bnx2x_dcbx_set_state(struct bnx2x *bp, bool dcb_on, u32 dcbx_enabled) 916 { 917 if (!CHIP_IS_E1x(bp)) { 918 bp->dcb_state = dcb_on; 919 bp->dcbx_enabled = dcbx_enabled; 920 } else { 921 bp->dcb_state = false; 922 bp->dcbx_enabled = BNX2X_DCBX_ENABLED_INVALID; 923 } 924 DP(NETIF_MSG_LINK, "DCB state [%s:%s]\n", 925 dcb_on ? "ON" : "OFF", 926 dcbx_enabled == BNX2X_DCBX_ENABLED_OFF ? "user-mode" : 927 dcbx_enabled == BNX2X_DCBX_ENABLED_ON_NEG_OFF ? "on-chip static" : 928 dcbx_enabled == BNX2X_DCBX_ENABLED_ON_NEG_ON ? 929 "on-chip with negotiation" : "invalid"); 930 } 931 932 void bnx2x_dcbx_init_params(struct bnx2x *bp) 933 { 934 bp->dcbx_config_params.admin_dcbx_version = 0x0; /* 0 - CEE; 1 - IEEE */ 935 bp->dcbx_config_params.admin_ets_willing = 1; 936 bp->dcbx_config_params.admin_pfc_willing = 1; 937 bp->dcbx_config_params.overwrite_settings = 1; 938 bp->dcbx_config_params.admin_ets_enable = 1; 939 bp->dcbx_config_params.admin_pfc_enable = 1; 940 bp->dcbx_config_params.admin_tc_supported_tx_enable = 1; 941 bp->dcbx_config_params.admin_ets_configuration_tx_enable = 1; 942 bp->dcbx_config_params.admin_pfc_tx_enable = 1; 943 bp->dcbx_config_params.admin_application_priority_tx_enable = 1; 944 bp->dcbx_config_params.admin_ets_reco_valid = 1; 945 bp->dcbx_config_params.admin_app_priority_willing = 1; 946 bp->dcbx_config_params.admin_configuration_bw_precentage[0] = 00; 947 bp->dcbx_config_params.admin_configuration_bw_precentage[1] = 50; 948 bp->dcbx_config_params.admin_configuration_bw_precentage[2] = 50; 949 bp->dcbx_config_params.admin_configuration_bw_precentage[3] = 0; 950 bp->dcbx_config_params.admin_configuration_bw_precentage[4] = 0; 951 bp->dcbx_config_params.admin_configuration_bw_precentage[5] = 0; 952 bp->dcbx_config_params.admin_configuration_bw_precentage[6] = 0; 953 bp->dcbx_config_params.admin_configuration_bw_precentage[7] = 0; 954 bp->dcbx_config_params.admin_configuration_ets_pg[0] = 1; 955 bp->dcbx_config_params.admin_configuration_ets_pg[1] = 0; 956 bp->dcbx_config_params.admin_configuration_ets_pg[2] = 0; 957 bp->dcbx_config_params.admin_configuration_ets_pg[3] = 2; 958 bp->dcbx_config_params.admin_configuration_ets_pg[4] = 0; 959 bp->dcbx_config_params.admin_configuration_ets_pg[5] = 0; 960 bp->dcbx_config_params.admin_configuration_ets_pg[6] = 0; 961 bp->dcbx_config_params.admin_configuration_ets_pg[7] = 0; 962 bp->dcbx_config_params.admin_recommendation_bw_precentage[0] = 0; 963 bp->dcbx_config_params.admin_recommendation_bw_precentage[1] = 1; 964 bp->dcbx_config_params.admin_recommendation_bw_precentage[2] = 2; 965 bp->dcbx_config_params.admin_recommendation_bw_precentage[3] = 0; 966 bp->dcbx_config_params.admin_recommendation_bw_precentage[4] = 7; 967 bp->dcbx_config_params.admin_recommendation_bw_precentage[5] = 5; 968 bp->dcbx_config_params.admin_recommendation_bw_precentage[6] = 6; 969 bp->dcbx_config_params.admin_recommendation_bw_precentage[7] = 7; 970 bp->dcbx_config_params.admin_recommendation_ets_pg[0] = 0; 971 bp->dcbx_config_params.admin_recommendation_ets_pg[1] = 1; 972 bp->dcbx_config_params.admin_recommendation_ets_pg[2] = 2; 973 bp->dcbx_config_params.admin_recommendation_ets_pg[3] = 3; 974 bp->dcbx_config_params.admin_recommendation_ets_pg[4] = 4; 975 bp->dcbx_config_params.admin_recommendation_ets_pg[5] = 5; 976 bp->dcbx_config_params.admin_recommendation_ets_pg[6] = 6; 977 bp->dcbx_config_params.admin_recommendation_ets_pg[7] = 7; 978 bp->dcbx_config_params.admin_pfc_bitmap = 0x8; /* FCoE(3) enable */ 979 bp->dcbx_config_params.admin_priority_app_table[0].valid = 1; 980 bp->dcbx_config_params.admin_priority_app_table[1].valid = 1; 981 bp->dcbx_config_params.admin_priority_app_table[2].valid = 0; 982 bp->dcbx_config_params.admin_priority_app_table[3].valid = 0; 983 bp->dcbx_config_params.admin_priority_app_table[0].priority = 3; 984 bp->dcbx_config_params.admin_priority_app_table[1].priority = 0; 985 bp->dcbx_config_params.admin_priority_app_table[2].priority = 0; 986 bp->dcbx_config_params.admin_priority_app_table[3].priority = 0; 987 bp->dcbx_config_params.admin_priority_app_table[0].traffic_type = 0; 988 bp->dcbx_config_params.admin_priority_app_table[1].traffic_type = 1; 989 bp->dcbx_config_params.admin_priority_app_table[2].traffic_type = 0; 990 bp->dcbx_config_params.admin_priority_app_table[3].traffic_type = 0; 991 bp->dcbx_config_params.admin_priority_app_table[0].app_id = 0x8906; 992 bp->dcbx_config_params.admin_priority_app_table[1].app_id = 3260; 993 bp->dcbx_config_params.admin_priority_app_table[2].app_id = 0; 994 bp->dcbx_config_params.admin_priority_app_table[3].app_id = 0; 995 bp->dcbx_config_params.admin_default_priority = 996 bp->dcbx_config_params.admin_priority_app_table[1].priority; 997 } 998 999 void bnx2x_dcbx_init(struct bnx2x *bp) 1000 { 1001 u32 dcbx_lldp_params_offset = SHMEM_LLDP_DCBX_PARAMS_NONE; 1002 1003 if (bp->dcbx_enabled <= 0) 1004 return; 1005 1006 /* validate: 1007 * chip of good for dcbx version, 1008 * dcb is wanted 1009 * the function is pmf 1010 * shmem2 contains DCBX support fields 1011 */ 1012 DP(NETIF_MSG_LINK, "dcb_state %d bp->port.pmf %d\n", 1013 bp->dcb_state, bp->port.pmf); 1014 1015 if (bp->dcb_state == BNX2X_DCB_STATE_ON && bp->port.pmf && 1016 SHMEM2_HAS(bp, dcbx_lldp_params_offset)) { 1017 dcbx_lldp_params_offset = 1018 SHMEM2_RD(bp, dcbx_lldp_params_offset); 1019 1020 DP(NETIF_MSG_LINK, "dcbx_lldp_params_offset 0x%x\n", 1021 dcbx_lldp_params_offset); 1022 1023 bnx2x_update_drv_flags(bp, DRV_FLAGS_DCB_CONFIGURED, 0); 1024 1025 if (SHMEM_LLDP_DCBX_PARAMS_NONE != dcbx_lldp_params_offset) { 1026 bnx2x_dcbx_admin_mib_updated_params(bp, 1027 dcbx_lldp_params_offset); 1028 1029 /* Let HW start negotiation */ 1030 bnx2x_fw_command(bp, 1031 DRV_MSG_CODE_DCBX_ADMIN_PMF_MSG, 0); 1032 } 1033 } 1034 } 1035 static void 1036 bnx2x_dcbx_print_cos_params(struct bnx2x *bp, 1037 struct bnx2x_func_tx_start_params *pfc_fw_cfg) 1038 { 1039 u8 pri = 0; 1040 u8 cos = 0; 1041 1042 DP(NETIF_MSG_LINK, 1043 "pfc_fw_cfg->dcb_version %x\n", pfc_fw_cfg->dcb_version); 1044 DP(NETIF_MSG_LINK, 1045 "pdev->params.dcbx_port_params.pfc." 1046 "priority_non_pauseable_mask %x\n", 1047 bp->dcbx_port_params.pfc.priority_non_pauseable_mask); 1048 1049 for (cos = 0 ; cos < bp->dcbx_port_params.ets.num_of_cos ; cos++) { 1050 DP(NETIF_MSG_LINK, "pdev->params.dcbx_port_params.ets." 1051 "cos_params[%d].pri_bitmask %x\n", cos, 1052 bp->dcbx_port_params.ets.cos_params[cos].pri_bitmask); 1053 1054 DP(NETIF_MSG_LINK, "pdev->params.dcbx_port_params.ets." 1055 "cos_params[%d].bw_tbl %x\n", cos, 1056 bp->dcbx_port_params.ets.cos_params[cos].bw_tbl); 1057 1058 DP(NETIF_MSG_LINK, "pdev->params.dcbx_port_params.ets." 1059 "cos_params[%d].strict %x\n", cos, 1060 bp->dcbx_port_params.ets.cos_params[cos].strict); 1061 1062 DP(NETIF_MSG_LINK, "pdev->params.dcbx_port_params.ets." 1063 "cos_params[%d].pauseable %x\n", cos, 1064 bp->dcbx_port_params.ets.cos_params[cos].pauseable); 1065 } 1066 1067 for (pri = 0; pri < LLFC_DRIVER_TRAFFIC_TYPE_MAX; pri++) { 1068 DP(NETIF_MSG_LINK, 1069 "pfc_fw_cfg->traffic_type_to_priority_cos[%d]." 1070 "priority %x\n", pri, 1071 pfc_fw_cfg->traffic_type_to_priority_cos[pri].priority); 1072 1073 DP(NETIF_MSG_LINK, 1074 "pfc_fw_cfg->traffic_type_to_priority_cos[%d].cos %x\n", 1075 pri, pfc_fw_cfg->traffic_type_to_priority_cos[pri].cos); 1076 } 1077 } 1078 1079 /* fills help_data according to pg_info */ 1080 static void bnx2x_dcbx_get_num_pg_traf_type(struct bnx2x *bp, 1081 u32 *pg_pri_orginal_spread, 1082 struct pg_help_data *help_data) 1083 { 1084 bool pg_found = false; 1085 u32 i, traf_type, add_traf_type, add_pg; 1086 u32 *ttp = bp->dcbx_port_params.app.traffic_type_priority; 1087 struct pg_entry_help_data *data = help_data->data; /*shotcut*/ 1088 1089 /* Set to invalid */ 1090 for (i = 0; i < LLFC_DRIVER_TRAFFIC_TYPE_MAX; i++) 1091 data[i].pg = DCBX_ILLEGAL_PG; 1092 1093 for (add_traf_type = 0; 1094 add_traf_type < LLFC_DRIVER_TRAFFIC_TYPE_MAX; add_traf_type++) { 1095 pg_found = false; 1096 if (ttp[add_traf_type] < MAX_PFC_PRIORITIES) { 1097 add_pg = (u8)pg_pri_orginal_spread[ttp[add_traf_type]]; 1098 for (traf_type = 0; 1099 traf_type < LLFC_DRIVER_TRAFFIC_TYPE_MAX; 1100 traf_type++) { 1101 if (data[traf_type].pg == add_pg) { 1102 if (!(data[traf_type].pg_priority & 1103 (1 << ttp[add_traf_type]))) 1104 data[traf_type]. 1105 num_of_dif_pri++; 1106 data[traf_type].pg_priority |= 1107 (1 << ttp[add_traf_type]); 1108 pg_found = true; 1109 break; 1110 } 1111 } 1112 if (false == pg_found) { 1113 data[help_data->num_of_pg].pg = add_pg; 1114 data[help_data->num_of_pg].pg_priority = 1115 (1 << ttp[add_traf_type]); 1116 data[help_data->num_of_pg].num_of_dif_pri = 1; 1117 help_data->num_of_pg++; 1118 } 1119 } 1120 DP(NETIF_MSG_LINK, 1121 "add_traf_type %d pg_found %s num_of_pg %d\n", 1122 add_traf_type, (false == pg_found) ? "NO" : "YES", 1123 help_data->num_of_pg); 1124 } 1125 } 1126 1127 static void bnx2x_dcbx_ets_disabled_entry_data(struct bnx2x *bp, 1128 struct cos_help_data *cos_data, 1129 u32 pri_join_mask) 1130 { 1131 /* Only one priority than only one COS */ 1132 cos_data->data[0].pausable = 1133 IS_DCBX_PFC_PRI_ONLY_PAUSE(bp, pri_join_mask); 1134 cos_data->data[0].pri_join_mask = pri_join_mask; 1135 cos_data->data[0].cos_bw = 100; 1136 cos_data->num_of_cos = 1; 1137 } 1138 1139 static inline void bnx2x_dcbx_add_to_cos_bw(struct bnx2x *bp, 1140 struct cos_entry_help_data *data, 1141 u8 pg_bw) 1142 { 1143 if (data->cos_bw == DCBX_INVALID_COS_BW) 1144 data->cos_bw = pg_bw; 1145 else 1146 data->cos_bw += pg_bw; 1147 } 1148 1149 static void bnx2x_dcbx_separate_pauseable_from_non(struct bnx2x *bp, 1150 struct cos_help_data *cos_data, 1151 u32 *pg_pri_orginal_spread, 1152 struct dcbx_ets_feature *ets) 1153 { 1154 u32 pri_tested = 0; 1155 u8 i = 0; 1156 u8 entry = 0; 1157 u8 pg_entry = 0; 1158 u8 num_of_pri = LLFC_DRIVER_TRAFFIC_TYPE_MAX; 1159 1160 cos_data->data[0].pausable = true; 1161 cos_data->data[1].pausable = false; 1162 cos_data->data[0].pri_join_mask = cos_data->data[1].pri_join_mask = 0; 1163 1164 for (i = 0 ; i < num_of_pri ; i++) { 1165 pri_tested = 1 << bp->dcbx_port_params. 1166 app.traffic_type_priority[i]; 1167 1168 if (pri_tested & DCBX_PFC_PRI_NON_PAUSE_MASK(bp)) { 1169 cos_data->data[1].pri_join_mask |= pri_tested; 1170 entry = 1; 1171 } else { 1172 cos_data->data[0].pri_join_mask |= pri_tested; 1173 entry = 0; 1174 } 1175 pg_entry = (u8)pg_pri_orginal_spread[bp->dcbx_port_params. 1176 app.traffic_type_priority[i]]; 1177 /* There can be only one strict pg */ 1178 if (pg_entry < DCBX_MAX_NUM_PG_BW_ENTRIES) 1179 bnx2x_dcbx_add_to_cos_bw(bp, &cos_data->data[entry], 1180 DCBX_PG_BW_GET(ets->pg_bw_tbl, pg_entry)); 1181 else 1182 /* If we join a group and one is strict 1183 * than the bw rulls */ 1184 cos_data->data[entry].strict = 1185 BNX2X_DCBX_STRICT_COS_HIGHEST; 1186 } 1187 if ((0 == cos_data->data[0].pri_join_mask) && 1188 (0 == cos_data->data[1].pri_join_mask)) 1189 BNX2X_ERR("dcbx error: Both groups must have priorities\n"); 1190 } 1191 1192 1193 #ifndef POWER_OF_2 1194 #define POWER_OF_2(x) ((0 != x) && (0 == (x & (x-1)))) 1195 #endif 1196 1197 static void bnx2x_dcbx_2cos_limit_cee_single_pg_to_cos_params(struct bnx2x *bp, 1198 struct pg_help_data *pg_help_data, 1199 struct cos_help_data *cos_data, 1200 u32 pri_join_mask, 1201 u8 num_of_dif_pri) 1202 { 1203 u8 i = 0; 1204 u32 pri_tested = 0; 1205 u32 pri_mask_without_pri = 0; 1206 u32 *ttp = bp->dcbx_port_params.app.traffic_type_priority; 1207 /*debug*/ 1208 if (num_of_dif_pri == 1) { 1209 bnx2x_dcbx_ets_disabled_entry_data(bp, cos_data, pri_join_mask); 1210 return; 1211 } 1212 /* single priority group */ 1213 if (pg_help_data->data[0].pg < DCBX_MAX_NUM_PG_BW_ENTRIES) { 1214 /* If there are both pauseable and non-pauseable priorities, 1215 * the pauseable priorities go to the first queue and 1216 * the non-pauseable priorities go to the second queue. 1217 */ 1218 if (IS_DCBX_PFC_PRI_MIX_PAUSE(bp, pri_join_mask)) { 1219 /* Pauseable */ 1220 cos_data->data[0].pausable = true; 1221 /* Non pauseable.*/ 1222 cos_data->data[1].pausable = false; 1223 1224 if (2 == num_of_dif_pri) { 1225 cos_data->data[0].cos_bw = 50; 1226 cos_data->data[1].cos_bw = 50; 1227 } 1228 1229 if (3 == num_of_dif_pri) { 1230 if (POWER_OF_2(DCBX_PFC_PRI_GET_PAUSE(bp, 1231 pri_join_mask))) { 1232 cos_data->data[0].cos_bw = 33; 1233 cos_data->data[1].cos_bw = 67; 1234 } else { 1235 cos_data->data[0].cos_bw = 67; 1236 cos_data->data[1].cos_bw = 33; 1237 } 1238 } 1239 1240 } else if (IS_DCBX_PFC_PRI_ONLY_PAUSE(bp, pri_join_mask)) { 1241 /* If there are only pauseable priorities, 1242 * then one/two priorities go to the first queue 1243 * and one priority goes to the second queue. 1244 */ 1245 if (2 == num_of_dif_pri) { 1246 cos_data->data[0].cos_bw = 50; 1247 cos_data->data[1].cos_bw = 50; 1248 } else { 1249 cos_data->data[0].cos_bw = 67; 1250 cos_data->data[1].cos_bw = 33; 1251 } 1252 cos_data->data[1].pausable = true; 1253 cos_data->data[0].pausable = true; 1254 /* All priorities except FCOE */ 1255 cos_data->data[0].pri_join_mask = (pri_join_mask & 1256 ((u8)~(1 << ttp[LLFC_TRAFFIC_TYPE_FCOE]))); 1257 /* Only FCOE priority.*/ 1258 cos_data->data[1].pri_join_mask = 1259 (1 << ttp[LLFC_TRAFFIC_TYPE_FCOE]); 1260 } else 1261 /* If there are only non-pauseable priorities, 1262 * they will all go to the same queue. 1263 */ 1264 bnx2x_dcbx_ets_disabled_entry_data(bp, 1265 cos_data, pri_join_mask); 1266 } else { 1267 /* priority group which is not BW limited (PG#15):*/ 1268 if (IS_DCBX_PFC_PRI_MIX_PAUSE(bp, pri_join_mask)) { 1269 /* If there are both pauseable and non-pauseable 1270 * priorities, the pauseable priorities go to the first 1271 * queue and the non-pauseable priorities 1272 * go to the second queue. 1273 */ 1274 if (DCBX_PFC_PRI_GET_PAUSE(bp, pri_join_mask) > 1275 DCBX_PFC_PRI_GET_NON_PAUSE(bp, pri_join_mask)) { 1276 cos_data->data[0].strict = 1277 BNX2X_DCBX_STRICT_COS_HIGHEST; 1278 cos_data->data[1].strict = 1279 BNX2X_DCBX_STRICT_COS_NEXT_LOWER_PRI( 1280 BNX2X_DCBX_STRICT_COS_HIGHEST); 1281 } else { 1282 cos_data->data[0].strict = 1283 BNX2X_DCBX_STRICT_COS_NEXT_LOWER_PRI( 1284 BNX2X_DCBX_STRICT_COS_HIGHEST); 1285 cos_data->data[1].strict = 1286 BNX2X_DCBX_STRICT_COS_HIGHEST; 1287 } 1288 /* Pauseable */ 1289 cos_data->data[0].pausable = true; 1290 /* Non pause-able.*/ 1291 cos_data->data[1].pausable = false; 1292 } else { 1293 /* If there are only pauseable priorities or 1294 * only non-pauseable,* the lower priorities go 1295 * to the first queue and the higherpriorities go 1296 * to the second queue. 1297 */ 1298 cos_data->data[0].pausable = 1299 cos_data->data[1].pausable = 1300 IS_DCBX_PFC_PRI_ONLY_PAUSE(bp, pri_join_mask); 1301 1302 for (i = 0 ; i < LLFC_DRIVER_TRAFFIC_TYPE_MAX; i++) { 1303 pri_tested = 1 << bp->dcbx_port_params. 1304 app.traffic_type_priority[i]; 1305 /* Remove priority tested */ 1306 pri_mask_without_pri = 1307 (pri_join_mask & ((u8)(~pri_tested))); 1308 if (pri_mask_without_pri < pri_tested) 1309 break; 1310 } 1311 1312 if (i == LLFC_DRIVER_TRAFFIC_TYPE_MAX) 1313 BNX2X_ERR("Invalid value for pri_join_mask -" 1314 " could not find a priority\n"); 1315 1316 cos_data->data[0].pri_join_mask = pri_mask_without_pri; 1317 cos_data->data[1].pri_join_mask = pri_tested; 1318 /* Both queues are strict priority, 1319 * and that with the highest priority 1320 * gets the highest strict priority in the arbiter. 1321 */ 1322 cos_data->data[0].strict = 1323 BNX2X_DCBX_STRICT_COS_NEXT_LOWER_PRI( 1324 BNX2X_DCBX_STRICT_COS_HIGHEST); 1325 cos_data->data[1].strict = 1326 BNX2X_DCBX_STRICT_COS_HIGHEST; 1327 } 1328 } 1329 } 1330 1331 static void bnx2x_dcbx_2cos_limit_cee_two_pg_to_cos_params( 1332 struct bnx2x *bp, 1333 struct pg_help_data *pg_help_data, 1334 struct dcbx_ets_feature *ets, 1335 struct cos_help_data *cos_data, 1336 u32 *pg_pri_orginal_spread, 1337 u32 pri_join_mask, 1338 u8 num_of_dif_pri) 1339 { 1340 u8 i = 0; 1341 u8 pg[DCBX_COS_MAX_NUM_E2] = { 0 }; 1342 1343 /* If there are both pauseable and non-pauseable priorities, 1344 * the pauseable priorities go to the first queue and 1345 * the non-pauseable priorities go to the second queue. 1346 */ 1347 if (IS_DCBX_PFC_PRI_MIX_PAUSE(bp, pri_join_mask)) { 1348 if (IS_DCBX_PFC_PRI_MIX_PAUSE(bp, 1349 pg_help_data->data[0].pg_priority) || 1350 IS_DCBX_PFC_PRI_MIX_PAUSE(bp, 1351 pg_help_data->data[1].pg_priority)) { 1352 /* If one PG contains both pauseable and 1353 * non-pauseable priorities then ETS is disabled. 1354 */ 1355 bnx2x_dcbx_separate_pauseable_from_non(bp, cos_data, 1356 pg_pri_orginal_spread, ets); 1357 bp->dcbx_port_params.ets.enabled = false; 1358 return; 1359 } 1360 1361 /* Pauseable */ 1362 cos_data->data[0].pausable = true; 1363 /* Non pauseable. */ 1364 cos_data->data[1].pausable = false; 1365 if (IS_DCBX_PFC_PRI_ONLY_PAUSE(bp, 1366 pg_help_data->data[0].pg_priority)) { 1367 /* 0 is pauseable */ 1368 cos_data->data[0].pri_join_mask = 1369 pg_help_data->data[0].pg_priority; 1370 pg[0] = pg_help_data->data[0].pg; 1371 cos_data->data[1].pri_join_mask = 1372 pg_help_data->data[1].pg_priority; 1373 pg[1] = pg_help_data->data[1].pg; 1374 } else {/* 1 is pauseable */ 1375 cos_data->data[0].pri_join_mask = 1376 pg_help_data->data[1].pg_priority; 1377 pg[0] = pg_help_data->data[1].pg; 1378 cos_data->data[1].pri_join_mask = 1379 pg_help_data->data[0].pg_priority; 1380 pg[1] = pg_help_data->data[0].pg; 1381 } 1382 } else { 1383 /* If there are only pauseable priorities or 1384 * only non-pauseable, each PG goes to a queue. 1385 */ 1386 cos_data->data[0].pausable = cos_data->data[1].pausable = 1387 IS_DCBX_PFC_PRI_ONLY_PAUSE(bp, pri_join_mask); 1388 cos_data->data[0].pri_join_mask = 1389 pg_help_data->data[0].pg_priority; 1390 pg[0] = pg_help_data->data[0].pg; 1391 cos_data->data[1].pri_join_mask = 1392 pg_help_data->data[1].pg_priority; 1393 pg[1] = pg_help_data->data[1].pg; 1394 } 1395 1396 /* There can be only one strict pg */ 1397 for (i = 0 ; i < ARRAY_SIZE(pg); i++) { 1398 if (pg[i] < DCBX_MAX_NUM_PG_BW_ENTRIES) 1399 cos_data->data[i].cos_bw = 1400 DCBX_PG_BW_GET(ets->pg_bw_tbl, pg[i]); 1401 else 1402 cos_data->data[i].strict = 1403 BNX2X_DCBX_STRICT_COS_HIGHEST; 1404 } 1405 } 1406 1407 static int bnx2x_dcbx_join_pgs( 1408 struct bnx2x *bp, 1409 struct dcbx_ets_feature *ets, 1410 struct pg_help_data *pg_help_data, 1411 u8 required_num_of_pg) 1412 { 1413 u8 entry_joined = pg_help_data->num_of_pg - 1; 1414 u8 entry_removed = entry_joined + 1; 1415 u8 pg_joined = 0; 1416 1417 if (required_num_of_pg == 0 || ARRAY_SIZE(pg_help_data->data) 1418 <= pg_help_data->num_of_pg) { 1419 1420 BNX2X_ERR("required_num_of_pg can't be zero\n"); 1421 return -EINVAL; 1422 } 1423 1424 while (required_num_of_pg < pg_help_data->num_of_pg) { 1425 entry_joined = pg_help_data->num_of_pg - 2; 1426 entry_removed = entry_joined + 1; 1427 /* protect index */ 1428 entry_removed %= ARRAY_SIZE(pg_help_data->data); 1429 1430 pg_help_data->data[entry_joined].pg_priority |= 1431 pg_help_data->data[entry_removed].pg_priority; 1432 1433 pg_help_data->data[entry_joined].num_of_dif_pri += 1434 pg_help_data->data[entry_removed].num_of_dif_pri; 1435 1436 if (pg_help_data->data[entry_joined].pg == DCBX_STRICT_PRI_PG || 1437 pg_help_data->data[entry_removed].pg == DCBX_STRICT_PRI_PG) 1438 /* Entries joined strict priority rules */ 1439 pg_help_data->data[entry_joined].pg = 1440 DCBX_STRICT_PRI_PG; 1441 else { 1442 /* Entries can be joined join BW */ 1443 pg_joined = DCBX_PG_BW_GET(ets->pg_bw_tbl, 1444 pg_help_data->data[entry_joined].pg) + 1445 DCBX_PG_BW_GET(ets->pg_bw_tbl, 1446 pg_help_data->data[entry_removed].pg); 1447 1448 DCBX_PG_BW_SET(ets->pg_bw_tbl, 1449 pg_help_data->data[entry_joined].pg, pg_joined); 1450 } 1451 /* Joined the entries */ 1452 pg_help_data->num_of_pg--; 1453 } 1454 1455 return 0; 1456 } 1457 1458 static void bnx2x_dcbx_2cos_limit_cee_three_pg_to_cos_params( 1459 struct bnx2x *bp, 1460 struct pg_help_data *pg_help_data, 1461 struct dcbx_ets_feature *ets, 1462 struct cos_help_data *cos_data, 1463 u32 *pg_pri_orginal_spread, 1464 u32 pri_join_mask, 1465 u8 num_of_dif_pri) 1466 { 1467 u8 i = 0; 1468 u32 pri_tested = 0; 1469 u8 entry = 0; 1470 u8 pg_entry = 0; 1471 bool b_found_strict = false; 1472 u8 num_of_pri = LLFC_DRIVER_TRAFFIC_TYPE_MAX; 1473 1474 cos_data->data[0].pri_join_mask = cos_data->data[1].pri_join_mask = 0; 1475 /* If there are both pauseable and non-pauseable priorities, 1476 * the pauseable priorities go to the first queue and the 1477 * non-pauseable priorities go to the second queue. 1478 */ 1479 if (IS_DCBX_PFC_PRI_MIX_PAUSE(bp, pri_join_mask)) 1480 bnx2x_dcbx_separate_pauseable_from_non(bp, 1481 cos_data, pg_pri_orginal_spread, ets); 1482 else { 1483 /* If two BW-limited PG-s were combined to one queue, 1484 * the BW is their sum. 1485 * 1486 * If there are only pauseable priorities or only non-pauseable, 1487 * and there are both BW-limited and non-BW-limited PG-s, 1488 * the BW-limited PG/s go to one queue and the non-BW-limited 1489 * PG/s go to the second queue. 1490 * 1491 * If there are only pauseable priorities or only non-pauseable 1492 * and all are BW limited, then two priorities go to the first 1493 * queue and one priority goes to the second queue. 1494 * 1495 * We will join this two cases: 1496 * if one is BW limited it will go to the secoend queue 1497 * otherwise the last priority will get it 1498 */ 1499 1500 cos_data->data[0].pausable = cos_data->data[1].pausable = 1501 IS_DCBX_PFC_PRI_ONLY_PAUSE(bp, pri_join_mask); 1502 1503 for (i = 0 ; i < num_of_pri; i++) { 1504 pri_tested = 1 << bp->dcbx_port_params. 1505 app.traffic_type_priority[i]; 1506 pg_entry = (u8)pg_pri_orginal_spread[bp-> 1507 dcbx_port_params.app.traffic_type_priority[i]]; 1508 1509 if (pg_entry < DCBX_MAX_NUM_PG_BW_ENTRIES) { 1510 entry = 0; 1511 1512 if (i == (num_of_pri-1) && 1513 false == b_found_strict) 1514 /* last entry will be handled separately 1515 * If no priority is strict than last 1516 * enty goes to last queue.*/ 1517 entry = 1; 1518 cos_data->data[entry].pri_join_mask |= 1519 pri_tested; 1520 bnx2x_dcbx_add_to_cos_bw(bp, 1521 &cos_data->data[entry], 1522 DCBX_PG_BW_GET(ets->pg_bw_tbl, 1523 pg_entry)); 1524 } else { 1525 b_found_strict = true; 1526 cos_data->data[1].pri_join_mask |= pri_tested; 1527 /* If we join a group and one is strict 1528 * than the bw rulls */ 1529 cos_data->data[1].strict = 1530 BNX2X_DCBX_STRICT_COS_HIGHEST; 1531 } 1532 } 1533 } 1534 } 1535 1536 1537 static void bnx2x_dcbx_2cos_limit_cee_fill_cos_params(struct bnx2x *bp, 1538 struct pg_help_data *help_data, 1539 struct dcbx_ets_feature *ets, 1540 struct cos_help_data *cos_data, 1541 u32 *pg_pri_orginal_spread, 1542 u32 pri_join_mask, 1543 u8 num_of_dif_pri) 1544 { 1545 1546 /* default E2 settings */ 1547 cos_data->num_of_cos = DCBX_COS_MAX_NUM_E2; 1548 1549 switch (help_data->num_of_pg) { 1550 case 1: 1551 bnx2x_dcbx_2cos_limit_cee_single_pg_to_cos_params( 1552 bp, 1553 help_data, 1554 cos_data, 1555 pri_join_mask, 1556 num_of_dif_pri); 1557 break; 1558 case 2: 1559 bnx2x_dcbx_2cos_limit_cee_two_pg_to_cos_params( 1560 bp, 1561 help_data, 1562 ets, 1563 cos_data, 1564 pg_pri_orginal_spread, 1565 pri_join_mask, 1566 num_of_dif_pri); 1567 break; 1568 1569 case 3: 1570 bnx2x_dcbx_2cos_limit_cee_three_pg_to_cos_params( 1571 bp, 1572 help_data, 1573 ets, 1574 cos_data, 1575 pg_pri_orginal_spread, 1576 pri_join_mask, 1577 num_of_dif_pri); 1578 break; 1579 default: 1580 BNX2X_ERR("Wrong pg_help_data.num_of_pg\n"); 1581 bnx2x_dcbx_ets_disabled_entry_data(bp, 1582 cos_data, pri_join_mask); 1583 } 1584 } 1585 1586 static int bnx2x_dcbx_spread_strict_pri(struct bnx2x *bp, 1587 struct cos_help_data *cos_data, 1588 u8 entry, 1589 u8 num_spread_of_entries, 1590 u8 strict_app_pris) 1591 { 1592 u8 strict_pri = BNX2X_DCBX_STRICT_COS_HIGHEST; 1593 u8 num_of_app_pri = MAX_PFC_PRIORITIES; 1594 u8 app_pri_bit = 0; 1595 1596 while (num_spread_of_entries && num_of_app_pri > 0) { 1597 app_pri_bit = 1 << (num_of_app_pri - 1); 1598 if (app_pri_bit & strict_app_pris) { 1599 struct cos_entry_help_data *data = &cos_data-> 1600 data[entry]; 1601 num_spread_of_entries--; 1602 if (num_spread_of_entries == 0) { 1603 /* last entry needed put all the entries left */ 1604 data->cos_bw = DCBX_INVALID_COS_BW; 1605 data->strict = strict_pri; 1606 data->pri_join_mask = strict_app_pris; 1607 data->pausable = DCBX_IS_PFC_PRI_SOME_PAUSE(bp, 1608 data->pri_join_mask); 1609 } else { 1610 strict_app_pris &= ~app_pri_bit; 1611 1612 data->cos_bw = DCBX_INVALID_COS_BW; 1613 data->strict = strict_pri; 1614 data->pri_join_mask = app_pri_bit; 1615 data->pausable = DCBX_IS_PFC_PRI_SOME_PAUSE(bp, 1616 data->pri_join_mask); 1617 } 1618 1619 strict_pri = 1620 BNX2X_DCBX_STRICT_COS_NEXT_LOWER_PRI(strict_pri); 1621 entry++; 1622 } 1623 1624 num_of_app_pri--; 1625 } 1626 1627 if (num_spread_of_entries) 1628 return -EINVAL; 1629 1630 return 0; 1631 } 1632 1633 static u8 bnx2x_dcbx_cee_fill_strict_pri(struct bnx2x *bp, 1634 struct cos_help_data *cos_data, 1635 u8 entry, 1636 u8 num_spread_of_entries, 1637 u8 strict_app_pris) 1638 { 1639 1640 if (bnx2x_dcbx_spread_strict_pri(bp, cos_data, entry, 1641 num_spread_of_entries, 1642 strict_app_pris)) { 1643 struct cos_entry_help_data *data = &cos_data-> 1644 data[entry]; 1645 /* Fill BW entry */ 1646 data->cos_bw = DCBX_INVALID_COS_BW; 1647 data->strict = BNX2X_DCBX_STRICT_COS_HIGHEST; 1648 data->pri_join_mask = strict_app_pris; 1649 data->pausable = DCBX_IS_PFC_PRI_SOME_PAUSE(bp, 1650 data->pri_join_mask); 1651 return 1; 1652 } 1653 1654 return num_spread_of_entries; 1655 } 1656 1657 static void bnx2x_dcbx_cee_fill_cos_params(struct bnx2x *bp, 1658 struct pg_help_data *help_data, 1659 struct dcbx_ets_feature *ets, 1660 struct cos_help_data *cos_data, 1661 u32 pri_join_mask) 1662 1663 { 1664 u8 need_num_of_entries = 0; 1665 u8 i = 0; 1666 u8 entry = 0; 1667 1668 /* 1669 * if the number of requested PG-s in CEE is greater than 3 1670 * then the results are not determined since this is a violation 1671 * of the standard. 1672 */ 1673 if (help_data->num_of_pg > DCBX_COS_MAX_NUM_E3B0) { 1674 if (bnx2x_dcbx_join_pgs(bp, ets, help_data, 1675 DCBX_COS_MAX_NUM_E3B0)) { 1676 BNX2X_ERR("Unable to reduce the number of PGs -" 1677 "we will disables ETS\n"); 1678 bnx2x_dcbx_ets_disabled_entry_data(bp, cos_data, 1679 pri_join_mask); 1680 return; 1681 } 1682 } 1683 1684 for (i = 0 ; i < help_data->num_of_pg; i++) { 1685 struct pg_entry_help_data *pg = &help_data->data[i]; 1686 if (pg->pg < DCBX_MAX_NUM_PG_BW_ENTRIES) { 1687 struct cos_entry_help_data *data = &cos_data-> 1688 data[entry]; 1689 /* Fill BW entry */ 1690 data->cos_bw = DCBX_PG_BW_GET(ets->pg_bw_tbl, pg->pg); 1691 data->strict = BNX2X_DCBX_STRICT_INVALID; 1692 data->pri_join_mask = pg->pg_priority; 1693 data->pausable = DCBX_IS_PFC_PRI_SOME_PAUSE(bp, 1694 data->pri_join_mask); 1695 1696 entry++; 1697 } else { 1698 need_num_of_entries = min_t(u8, 1699 (u8)pg->num_of_dif_pri, 1700 (u8)DCBX_COS_MAX_NUM_E3B0 - 1701 help_data->num_of_pg + 1); 1702 /* 1703 * If there are still VOQ-s which have no associated PG, 1704 * then associate these VOQ-s to PG15. These PG-s will 1705 * be used for SP between priorities on PG15. 1706 */ 1707 entry += bnx2x_dcbx_cee_fill_strict_pri(bp, cos_data, 1708 entry, need_num_of_entries, pg->pg_priority); 1709 } 1710 } 1711 1712 /* the entry will represent the number of COSes used */ 1713 cos_data->num_of_cos = entry; 1714 } 1715 static void bnx2x_dcbx_fill_cos_params(struct bnx2x *bp, 1716 struct pg_help_data *help_data, 1717 struct dcbx_ets_feature *ets, 1718 u32 *pg_pri_orginal_spread) 1719 { 1720 struct cos_help_data cos_data; 1721 u8 i = 0; 1722 u32 pri_join_mask = 0; 1723 u8 num_of_dif_pri = 0; 1724 1725 memset(&cos_data, 0, sizeof(cos_data)); 1726 1727 /* Validate the pg value */ 1728 for (i = 0; i < help_data->num_of_pg ; i++) { 1729 if (DCBX_STRICT_PRIORITY != help_data->data[i].pg && 1730 DCBX_MAX_NUM_PG_BW_ENTRIES <= help_data->data[i].pg) 1731 BNX2X_ERR("Invalid pg[%d] data %x\n", i, 1732 help_data->data[i].pg); 1733 pri_join_mask |= help_data->data[i].pg_priority; 1734 num_of_dif_pri += help_data->data[i].num_of_dif_pri; 1735 } 1736 1737 /* defaults */ 1738 cos_data.num_of_cos = 1; 1739 for (i = 0; i < ARRAY_SIZE(cos_data.data); i++) { 1740 cos_data.data[i].pri_join_mask = 0; 1741 cos_data.data[i].pausable = false; 1742 cos_data.data[i].strict = BNX2X_DCBX_STRICT_INVALID; 1743 cos_data.data[i].cos_bw = DCBX_INVALID_COS_BW; 1744 } 1745 1746 if (CHIP_IS_E3B0(bp)) 1747 bnx2x_dcbx_cee_fill_cos_params(bp, help_data, ets, 1748 &cos_data, pri_join_mask); 1749 else /* E2 + E3A0 */ 1750 bnx2x_dcbx_2cos_limit_cee_fill_cos_params(bp, 1751 help_data, ets, 1752 &cos_data, 1753 pg_pri_orginal_spread, 1754 pri_join_mask, 1755 num_of_dif_pri); 1756 1757 for (i = 0; i < cos_data.num_of_cos ; i++) { 1758 struct bnx2x_dcbx_cos_params *p = 1759 &bp->dcbx_port_params.ets.cos_params[i]; 1760 1761 p->strict = cos_data.data[i].strict; 1762 p->bw_tbl = cos_data.data[i].cos_bw; 1763 p->pri_bitmask = cos_data.data[i].pri_join_mask; 1764 p->pauseable = cos_data.data[i].pausable; 1765 1766 /* sanity */ 1767 if (p->bw_tbl != DCBX_INVALID_COS_BW || 1768 p->strict != BNX2X_DCBX_STRICT_INVALID) { 1769 if (p->pri_bitmask == 0) 1770 BNX2X_ERR("Invalid pri_bitmask for %d\n", i); 1771 1772 if (CHIP_IS_E2(bp) || CHIP_IS_E3A0(bp)) { 1773 1774 if (p->pauseable && 1775 DCBX_PFC_PRI_GET_NON_PAUSE(bp, 1776 p->pri_bitmask) != 0) 1777 BNX2X_ERR("Inconsistent config for " 1778 "pausable COS %d\n", i); 1779 1780 if (!p->pauseable && 1781 DCBX_PFC_PRI_GET_PAUSE(bp, 1782 p->pri_bitmask) != 0) 1783 BNX2X_ERR("Inconsistent config for " 1784 "nonpausable COS %d\n", i); 1785 } 1786 } 1787 1788 if (p->pauseable) 1789 DP(NETIF_MSG_LINK, "COS %d PAUSABLE prijoinmask 0x%x\n", 1790 i, cos_data.data[i].pri_join_mask); 1791 else 1792 DP(NETIF_MSG_LINK, "COS %d NONPAUSABLE prijoinmask " 1793 "0x%x\n", 1794 i, cos_data.data[i].pri_join_mask); 1795 } 1796 1797 bp->dcbx_port_params.ets.num_of_cos = cos_data.num_of_cos ; 1798 } 1799 1800 static void bnx2x_dcbx_get_ets_pri_pg_tbl(struct bnx2x *bp, 1801 u32 *set_configuration_ets_pg, 1802 u32 *pri_pg_tbl) 1803 { 1804 int i; 1805 1806 for (i = 0; i < DCBX_MAX_NUM_PRI_PG_ENTRIES; i++) { 1807 set_configuration_ets_pg[i] = DCBX_PRI_PG_GET(pri_pg_tbl, i); 1808 1809 DP(NETIF_MSG_LINK, "set_configuration_ets_pg[%d] = 0x%x\n", 1810 i, set_configuration_ets_pg[i]); 1811 } 1812 } 1813 1814 static void bnx2x_dcbx_fw_struct(struct bnx2x *bp, 1815 struct bnx2x_func_tx_start_params *pfc_fw_cfg) 1816 { 1817 u16 pri_bit = 0; 1818 u8 cos = 0, pri = 0; 1819 struct priority_cos *tt2cos; 1820 u32 *ttp = bp->dcbx_port_params.app.traffic_type_priority; 1821 1822 memset(pfc_fw_cfg, 0, sizeof(*pfc_fw_cfg)); 1823 1824 /* to disable DCB - the structure must be zeroed */ 1825 if (bp->dcbx_error & DCBX_REMOTE_MIB_ERROR) 1826 return; 1827 1828 /*shortcut*/ 1829 tt2cos = pfc_fw_cfg->traffic_type_to_priority_cos; 1830 1831 /* Fw version should be incremented each update */ 1832 pfc_fw_cfg->dcb_version = ++bp->dcb_version; 1833 pfc_fw_cfg->dcb_enabled = 1; 1834 1835 /* Fill priority parameters */ 1836 for (pri = 0; pri < LLFC_DRIVER_TRAFFIC_TYPE_MAX; pri++) { 1837 tt2cos[pri].priority = ttp[pri]; 1838 pri_bit = 1 << tt2cos[pri].priority; 1839 1840 /* Fill COS parameters based on COS calculated to 1841 * make it more general for future use */ 1842 for (cos = 0; cos < bp->dcbx_port_params.ets.num_of_cos; cos++) 1843 if (bp->dcbx_port_params.ets.cos_params[cos]. 1844 pri_bitmask & pri_bit) 1845 tt2cos[pri].cos = cos; 1846 } 1847 1848 /* we never want the FW to add a 0 vlan tag */ 1849 pfc_fw_cfg->dont_add_pri_0_en = 1; 1850 1851 bnx2x_dcbx_print_cos_params(bp, pfc_fw_cfg); 1852 } 1853 1854 void bnx2x_dcbx_pmf_update(struct bnx2x *bp) 1855 { 1856 /* if we need to syncronize DCBX result from prev PMF 1857 * read it from shmem and update bp and netdev accordingly 1858 */ 1859 if (SHMEM2_HAS(bp, drv_flags) && 1860 GET_FLAGS(SHMEM2_RD(bp, drv_flags), DRV_FLAGS_DCB_CONFIGURED)) { 1861 /* Read neg results if dcbx is in the FW */ 1862 if (bnx2x_dcbx_read_shmem_neg_results(bp)) 1863 return; 1864 1865 bnx2x_dump_dcbx_drv_param(bp, &bp->dcbx_local_feat, 1866 bp->dcbx_error); 1867 bnx2x_get_dcbx_drv_param(bp, &bp->dcbx_local_feat, 1868 bp->dcbx_error); 1869 #ifdef BCM_DCBNL 1870 /* 1871 * Add new app tlvs to dcbnl 1872 */ 1873 bnx2x_dcbnl_update_applist(bp, false); 1874 /* 1875 * Send a notification for the new negotiated parameters 1876 */ 1877 dcbnl_cee_notify(bp->dev, RTM_GETDCB, DCB_CMD_CEE_GET, 0, 0); 1878 #endif 1879 /* 1880 * reconfigure the netdevice with the results of the new 1881 * dcbx negotiation. 1882 */ 1883 bnx2x_dcbx_update_tc_mapping(bp); 1884 1885 } 1886 } 1887 1888 /* DCB netlink */ 1889 #ifdef BCM_DCBNL 1890 1891 #define BNX2X_DCBX_CAPS (DCB_CAP_DCBX_LLD_MANAGED | \ 1892 DCB_CAP_DCBX_VER_CEE | DCB_CAP_DCBX_STATIC) 1893 1894 static inline bool bnx2x_dcbnl_set_valid(struct bnx2x *bp) 1895 { 1896 /* validate dcbnl call that may change HW state: 1897 * DCB is on and DCBX mode was SUCCESSFULLY set by the user. 1898 */ 1899 return bp->dcb_state && bp->dcbx_mode_uset; 1900 } 1901 1902 static u8 bnx2x_dcbnl_get_state(struct net_device *netdev) 1903 { 1904 struct bnx2x *bp = netdev_priv(netdev); 1905 DP(NETIF_MSG_LINK, "state = %d\n", bp->dcb_state); 1906 return bp->dcb_state; 1907 } 1908 1909 static u8 bnx2x_dcbnl_set_state(struct net_device *netdev, u8 state) 1910 { 1911 struct bnx2x *bp = netdev_priv(netdev); 1912 DP(NETIF_MSG_LINK, "state = %s\n", state ? "on" : "off"); 1913 1914 bnx2x_dcbx_set_state(bp, (state ? true : false), bp->dcbx_enabled); 1915 return 0; 1916 } 1917 1918 static void bnx2x_dcbnl_get_perm_hw_addr(struct net_device *netdev, 1919 u8 *perm_addr) 1920 { 1921 struct bnx2x *bp = netdev_priv(netdev); 1922 DP(NETIF_MSG_LINK, "GET-PERM-ADDR\n"); 1923 1924 /* first the HW mac address */ 1925 memcpy(perm_addr, netdev->dev_addr, netdev->addr_len); 1926 1927 #ifdef BCM_CNIC 1928 /* second SAN address */ 1929 memcpy(perm_addr+netdev->addr_len, bp->fip_mac, netdev->addr_len); 1930 #endif 1931 } 1932 1933 static void bnx2x_dcbnl_set_pg_tccfg_tx(struct net_device *netdev, int prio, 1934 u8 prio_type, u8 pgid, u8 bw_pct, 1935 u8 up_map) 1936 { 1937 struct bnx2x *bp = netdev_priv(netdev); 1938 1939 DP(NETIF_MSG_LINK, "prio[%d] = %d\n", prio, pgid); 1940 if (!bnx2x_dcbnl_set_valid(bp) || prio >= DCBX_MAX_NUM_PRI_PG_ENTRIES) 1941 return; 1942 1943 /** 1944 * bw_pct ingnored - band-width percentage devision between user 1945 * priorities within the same group is not 1946 * standard and hence not supported 1947 * 1948 * prio_type igonred - priority levels within the same group are not 1949 * standard and hence are not supported. According 1950 * to the standard pgid 15 is dedicated to strict 1951 * prioirty traffic (on the port level). 1952 * 1953 * up_map ignored 1954 */ 1955 1956 bp->dcbx_config_params.admin_configuration_ets_pg[prio] = pgid; 1957 bp->dcbx_config_params.admin_ets_configuration_tx_enable = 1; 1958 } 1959 1960 static void bnx2x_dcbnl_set_pg_bwgcfg_tx(struct net_device *netdev, 1961 int pgid, u8 bw_pct) 1962 { 1963 struct bnx2x *bp = netdev_priv(netdev); 1964 DP(NETIF_MSG_LINK, "pgid[%d] = %d\n", pgid, bw_pct); 1965 1966 if (!bnx2x_dcbnl_set_valid(bp) || pgid >= DCBX_MAX_NUM_PG_BW_ENTRIES) 1967 return; 1968 1969 bp->dcbx_config_params.admin_configuration_bw_precentage[pgid] = bw_pct; 1970 bp->dcbx_config_params.admin_ets_configuration_tx_enable = 1; 1971 } 1972 1973 static void bnx2x_dcbnl_set_pg_tccfg_rx(struct net_device *netdev, int prio, 1974 u8 prio_type, u8 pgid, u8 bw_pct, 1975 u8 up_map) 1976 { 1977 struct bnx2x *bp = netdev_priv(netdev); 1978 DP(NETIF_MSG_LINK, "Nothing to set; No RX support\n"); 1979 } 1980 1981 static void bnx2x_dcbnl_set_pg_bwgcfg_rx(struct net_device *netdev, 1982 int pgid, u8 bw_pct) 1983 { 1984 struct bnx2x *bp = netdev_priv(netdev); 1985 DP(NETIF_MSG_LINK, "Nothing to set; No RX support\n"); 1986 } 1987 1988 static void bnx2x_dcbnl_get_pg_tccfg_tx(struct net_device *netdev, int prio, 1989 u8 *prio_type, u8 *pgid, u8 *bw_pct, 1990 u8 *up_map) 1991 { 1992 struct bnx2x *bp = netdev_priv(netdev); 1993 DP(NETIF_MSG_LINK, "prio = %d\n", prio); 1994 1995 /** 1996 * bw_pct ingnored - band-width percentage devision between user 1997 * priorities within the same group is not 1998 * standard and hence not supported 1999 * 2000 * prio_type igonred - priority levels within the same group are not 2001 * standard and hence are not supported. According 2002 * to the standard pgid 15 is dedicated to strict 2003 * prioirty traffic (on the port level). 2004 * 2005 * up_map ignored 2006 */ 2007 *up_map = *bw_pct = *prio_type = *pgid = 0; 2008 2009 if (!bp->dcb_state || prio >= DCBX_MAX_NUM_PRI_PG_ENTRIES) 2010 return; 2011 2012 *pgid = DCBX_PRI_PG_GET(bp->dcbx_local_feat.ets.pri_pg_tbl, prio); 2013 } 2014 2015 static void bnx2x_dcbnl_get_pg_bwgcfg_tx(struct net_device *netdev, 2016 int pgid, u8 *bw_pct) 2017 { 2018 struct bnx2x *bp = netdev_priv(netdev); 2019 DP(NETIF_MSG_LINK, "pgid = %d\n", pgid); 2020 2021 *bw_pct = 0; 2022 2023 if (!bp->dcb_state || pgid >= DCBX_MAX_NUM_PG_BW_ENTRIES) 2024 return; 2025 2026 *bw_pct = DCBX_PG_BW_GET(bp->dcbx_local_feat.ets.pg_bw_tbl, pgid); 2027 } 2028 2029 static void bnx2x_dcbnl_get_pg_tccfg_rx(struct net_device *netdev, int prio, 2030 u8 *prio_type, u8 *pgid, u8 *bw_pct, 2031 u8 *up_map) 2032 { 2033 struct bnx2x *bp = netdev_priv(netdev); 2034 DP(NETIF_MSG_LINK, "Nothing to get; No RX support\n"); 2035 2036 *prio_type = *pgid = *bw_pct = *up_map = 0; 2037 } 2038 2039 static void bnx2x_dcbnl_get_pg_bwgcfg_rx(struct net_device *netdev, 2040 int pgid, u8 *bw_pct) 2041 { 2042 struct bnx2x *bp = netdev_priv(netdev); 2043 DP(NETIF_MSG_LINK, "Nothing to get; No RX support\n"); 2044 2045 *bw_pct = 0; 2046 } 2047 2048 static void bnx2x_dcbnl_set_pfc_cfg(struct net_device *netdev, int prio, 2049 u8 setting) 2050 { 2051 struct bnx2x *bp = netdev_priv(netdev); 2052 DP(NETIF_MSG_LINK, "prio[%d] = %d\n", prio, setting); 2053 2054 if (!bnx2x_dcbnl_set_valid(bp) || prio >= MAX_PFC_PRIORITIES) 2055 return; 2056 2057 bp->dcbx_config_params.admin_pfc_bitmap |= ((setting ? 1 : 0) << prio); 2058 2059 if (setting) 2060 bp->dcbx_config_params.admin_pfc_tx_enable = 1; 2061 } 2062 2063 static void bnx2x_dcbnl_get_pfc_cfg(struct net_device *netdev, int prio, 2064 u8 *setting) 2065 { 2066 struct bnx2x *bp = netdev_priv(netdev); 2067 DP(NETIF_MSG_LINK, "prio = %d\n", prio); 2068 2069 *setting = 0; 2070 2071 if (!bp->dcb_state || prio >= MAX_PFC_PRIORITIES) 2072 return; 2073 2074 *setting = (bp->dcbx_local_feat.pfc.pri_en_bitmap >> prio) & 0x1; 2075 } 2076 2077 static u8 bnx2x_dcbnl_set_all(struct net_device *netdev) 2078 { 2079 struct bnx2x *bp = netdev_priv(netdev); 2080 int rc = 0; 2081 2082 DP(NETIF_MSG_LINK, "SET-ALL\n"); 2083 2084 if (!bnx2x_dcbnl_set_valid(bp)) 2085 return 1; 2086 2087 if (bp->recovery_state != BNX2X_RECOVERY_DONE) { 2088 netdev_err(bp->dev, "Handling parity error recovery. " 2089 "Try again later\n"); 2090 return 1; 2091 } 2092 if (netif_running(bp->dev)) { 2093 bnx2x_nic_unload(bp, UNLOAD_NORMAL); 2094 rc = bnx2x_nic_load(bp, LOAD_NORMAL); 2095 } 2096 DP(NETIF_MSG_LINK, "set_dcbx_params done (%d)\n", rc); 2097 if (rc) 2098 return 1; 2099 2100 return 0; 2101 } 2102 2103 static u8 bnx2x_dcbnl_get_cap(struct net_device *netdev, int capid, u8 *cap) 2104 { 2105 struct bnx2x *bp = netdev_priv(netdev); 2106 u8 rval = 0; 2107 2108 if (bp->dcb_state) { 2109 switch (capid) { 2110 case DCB_CAP_ATTR_PG: 2111 *cap = true; 2112 break; 2113 case DCB_CAP_ATTR_PFC: 2114 *cap = true; 2115 break; 2116 case DCB_CAP_ATTR_UP2TC: 2117 *cap = false; 2118 break; 2119 case DCB_CAP_ATTR_PG_TCS: 2120 *cap = 0x80; /* 8 priorities for PGs */ 2121 break; 2122 case DCB_CAP_ATTR_PFC_TCS: 2123 *cap = 0x80; /* 8 priorities for PFC */ 2124 break; 2125 case DCB_CAP_ATTR_GSP: 2126 *cap = true; 2127 break; 2128 case DCB_CAP_ATTR_BCN: 2129 *cap = false; 2130 break; 2131 case DCB_CAP_ATTR_DCBX: 2132 *cap = BNX2X_DCBX_CAPS; 2133 break; 2134 default: 2135 rval = -EINVAL; 2136 break; 2137 } 2138 } else 2139 rval = -EINVAL; 2140 2141 DP(NETIF_MSG_LINK, "capid %d:%x\n", capid, *cap); 2142 return rval; 2143 } 2144 2145 static u8 bnx2x_dcbnl_get_numtcs(struct net_device *netdev, int tcid, u8 *num) 2146 { 2147 struct bnx2x *bp = netdev_priv(netdev); 2148 u8 rval = 0; 2149 2150 DP(NETIF_MSG_LINK, "tcid %d\n", tcid); 2151 2152 if (bp->dcb_state) { 2153 switch (tcid) { 2154 case DCB_NUMTCS_ATTR_PG: 2155 *num = CHIP_IS_E3B0(bp) ? DCBX_COS_MAX_NUM_E3B0 : 2156 DCBX_COS_MAX_NUM_E2; 2157 break; 2158 case DCB_NUMTCS_ATTR_PFC: 2159 *num = CHIP_IS_E3B0(bp) ? DCBX_COS_MAX_NUM_E3B0 : 2160 DCBX_COS_MAX_NUM_E2; 2161 break; 2162 default: 2163 rval = -EINVAL; 2164 break; 2165 } 2166 } else 2167 rval = -EINVAL; 2168 2169 return rval; 2170 } 2171 2172 static u8 bnx2x_dcbnl_set_numtcs(struct net_device *netdev, int tcid, u8 num) 2173 { 2174 struct bnx2x *bp = netdev_priv(netdev); 2175 DP(NETIF_MSG_LINK, "num tcs = %d; Not supported\n", num); 2176 return -EINVAL; 2177 } 2178 2179 static u8 bnx2x_dcbnl_get_pfc_state(struct net_device *netdev) 2180 { 2181 struct bnx2x *bp = netdev_priv(netdev); 2182 DP(NETIF_MSG_LINK, "state = %d\n", bp->dcbx_local_feat.pfc.enabled); 2183 2184 if (!bp->dcb_state) 2185 return 0; 2186 2187 return bp->dcbx_local_feat.pfc.enabled; 2188 } 2189 2190 static void bnx2x_dcbnl_set_pfc_state(struct net_device *netdev, u8 state) 2191 { 2192 struct bnx2x *bp = netdev_priv(netdev); 2193 DP(NETIF_MSG_LINK, "state = %s\n", state ? "on" : "off"); 2194 2195 if (!bnx2x_dcbnl_set_valid(bp)) 2196 return; 2197 2198 bp->dcbx_config_params.admin_pfc_tx_enable = 2199 bp->dcbx_config_params.admin_pfc_enable = (state ? 1 : 0); 2200 } 2201 2202 static void bnx2x_admin_app_set_ent( 2203 struct bnx2x_admin_priority_app_table *app_ent, 2204 u8 idtype, u16 idval, u8 up) 2205 { 2206 app_ent->valid = 1; 2207 2208 switch (idtype) { 2209 case DCB_APP_IDTYPE_ETHTYPE: 2210 app_ent->traffic_type = TRAFFIC_TYPE_ETH; 2211 break; 2212 case DCB_APP_IDTYPE_PORTNUM: 2213 app_ent->traffic_type = TRAFFIC_TYPE_PORT; 2214 break; 2215 default: 2216 break; /* never gets here */ 2217 } 2218 app_ent->app_id = idval; 2219 app_ent->priority = up; 2220 } 2221 2222 static bool bnx2x_admin_app_is_equal( 2223 struct bnx2x_admin_priority_app_table *app_ent, 2224 u8 idtype, u16 idval) 2225 { 2226 if (!app_ent->valid) 2227 return false; 2228 2229 switch (idtype) { 2230 case DCB_APP_IDTYPE_ETHTYPE: 2231 if (app_ent->traffic_type != TRAFFIC_TYPE_ETH) 2232 return false; 2233 break; 2234 case DCB_APP_IDTYPE_PORTNUM: 2235 if (app_ent->traffic_type != TRAFFIC_TYPE_PORT) 2236 return false; 2237 break; 2238 default: 2239 return false; 2240 } 2241 if (app_ent->app_id != idval) 2242 return false; 2243 2244 return true; 2245 } 2246 2247 static int bnx2x_set_admin_app_up(struct bnx2x *bp, u8 idtype, u16 idval, u8 up) 2248 { 2249 int i, ff; 2250 2251 /* iterate over the app entries looking for idtype and idval */ 2252 for (i = 0, ff = -1; i < DCBX_CONFIG_MAX_APP_PROTOCOL; i++) { 2253 struct bnx2x_admin_priority_app_table *app_ent = 2254 &bp->dcbx_config_params.admin_priority_app_table[i]; 2255 if (bnx2x_admin_app_is_equal(app_ent, idtype, idval)) 2256 break; 2257 2258 if (ff < 0 && !app_ent->valid) 2259 ff = i; 2260 } 2261 if (i < DCBX_CONFIG_MAX_APP_PROTOCOL) 2262 /* if found overwrite up */ 2263 bp->dcbx_config_params. 2264 admin_priority_app_table[i].priority = up; 2265 else if (ff >= 0) 2266 /* not found use first-free */ 2267 bnx2x_admin_app_set_ent( 2268 &bp->dcbx_config_params.admin_priority_app_table[ff], 2269 idtype, idval, up); 2270 else 2271 /* app table is full */ 2272 return -EBUSY; 2273 2274 /* up configured, if not 0 make sure feature is enabled */ 2275 if (up) 2276 bp->dcbx_config_params.admin_application_priority_tx_enable = 1; 2277 2278 return 0; 2279 } 2280 2281 static u8 bnx2x_dcbnl_set_app_up(struct net_device *netdev, u8 idtype, 2282 u16 idval, u8 up) 2283 { 2284 struct bnx2x *bp = netdev_priv(netdev); 2285 2286 DP(NETIF_MSG_LINK, "app_type %d, app_id %x, prio bitmap %d\n", 2287 idtype, idval, up); 2288 2289 if (!bnx2x_dcbnl_set_valid(bp)) 2290 return -EINVAL; 2291 2292 /* verify idtype */ 2293 switch (idtype) { 2294 case DCB_APP_IDTYPE_ETHTYPE: 2295 case DCB_APP_IDTYPE_PORTNUM: 2296 break; 2297 default: 2298 return -EINVAL; 2299 } 2300 return bnx2x_set_admin_app_up(bp, idtype, idval, up); 2301 } 2302 2303 static u8 bnx2x_dcbnl_get_dcbx(struct net_device *netdev) 2304 { 2305 struct bnx2x *bp = netdev_priv(netdev); 2306 u8 state; 2307 2308 state = DCB_CAP_DCBX_LLD_MANAGED | DCB_CAP_DCBX_VER_CEE; 2309 2310 if (bp->dcbx_enabled == BNX2X_DCBX_ENABLED_ON_NEG_OFF) 2311 state |= DCB_CAP_DCBX_STATIC; 2312 2313 return state; 2314 } 2315 2316 static u8 bnx2x_dcbnl_set_dcbx(struct net_device *netdev, u8 state) 2317 { 2318 struct bnx2x *bp = netdev_priv(netdev); 2319 DP(NETIF_MSG_LINK, "state = %02x\n", state); 2320 2321 /* set dcbx mode */ 2322 2323 if ((state & BNX2X_DCBX_CAPS) != state) { 2324 BNX2X_ERR("Requested DCBX mode %x is beyond advertised " 2325 "capabilities\n", state); 2326 return 1; 2327 } 2328 2329 if (bp->dcb_state != BNX2X_DCB_STATE_ON) { 2330 BNX2X_ERR("DCB turned off, DCBX configuration is invalid\n"); 2331 return 1; 2332 } 2333 2334 if (state & DCB_CAP_DCBX_STATIC) 2335 bp->dcbx_enabled = BNX2X_DCBX_ENABLED_ON_NEG_OFF; 2336 else 2337 bp->dcbx_enabled = BNX2X_DCBX_ENABLED_ON_NEG_ON; 2338 2339 bp->dcbx_mode_uset = true; 2340 return 0; 2341 } 2342 2343 static u8 bnx2x_dcbnl_get_featcfg(struct net_device *netdev, int featid, 2344 u8 *flags) 2345 { 2346 struct bnx2x *bp = netdev_priv(netdev); 2347 u8 rval = 0; 2348 2349 DP(NETIF_MSG_LINK, "featid %d\n", featid); 2350 2351 if (bp->dcb_state) { 2352 *flags = 0; 2353 switch (featid) { 2354 case DCB_FEATCFG_ATTR_PG: 2355 if (bp->dcbx_local_feat.ets.enabled) 2356 *flags |= DCB_FEATCFG_ENABLE; 2357 if (bp->dcbx_error & DCBX_LOCAL_ETS_ERROR) 2358 *flags |= DCB_FEATCFG_ERROR; 2359 break; 2360 case DCB_FEATCFG_ATTR_PFC: 2361 if (bp->dcbx_local_feat.pfc.enabled) 2362 *flags |= DCB_FEATCFG_ENABLE; 2363 if (bp->dcbx_error & (DCBX_LOCAL_PFC_ERROR | 2364 DCBX_LOCAL_PFC_MISMATCH)) 2365 *flags |= DCB_FEATCFG_ERROR; 2366 break; 2367 case DCB_FEATCFG_ATTR_APP: 2368 if (bp->dcbx_local_feat.app.enabled) 2369 *flags |= DCB_FEATCFG_ENABLE; 2370 if (bp->dcbx_error & (DCBX_LOCAL_APP_ERROR | 2371 DCBX_LOCAL_APP_MISMATCH)) 2372 *flags |= DCB_FEATCFG_ERROR; 2373 break; 2374 default: 2375 rval = -EINVAL; 2376 break; 2377 } 2378 } else 2379 rval = -EINVAL; 2380 2381 return rval; 2382 } 2383 2384 static u8 bnx2x_dcbnl_set_featcfg(struct net_device *netdev, int featid, 2385 u8 flags) 2386 { 2387 struct bnx2x *bp = netdev_priv(netdev); 2388 u8 rval = 0; 2389 2390 DP(NETIF_MSG_LINK, "featid = %d flags = %02x\n", featid, flags); 2391 2392 /* ignore the 'advertise' flag */ 2393 if (bnx2x_dcbnl_set_valid(bp)) { 2394 switch (featid) { 2395 case DCB_FEATCFG_ATTR_PG: 2396 bp->dcbx_config_params.admin_ets_enable = 2397 flags & DCB_FEATCFG_ENABLE ? 1 : 0; 2398 bp->dcbx_config_params.admin_ets_willing = 2399 flags & DCB_FEATCFG_WILLING ? 1 : 0; 2400 break; 2401 case DCB_FEATCFG_ATTR_PFC: 2402 bp->dcbx_config_params.admin_pfc_enable = 2403 flags & DCB_FEATCFG_ENABLE ? 1 : 0; 2404 bp->dcbx_config_params.admin_pfc_willing = 2405 flags & DCB_FEATCFG_WILLING ? 1 : 0; 2406 break; 2407 case DCB_FEATCFG_ATTR_APP: 2408 /* ignore enable, always enabled */ 2409 bp->dcbx_config_params.admin_app_priority_willing = 2410 flags & DCB_FEATCFG_WILLING ? 1 : 0; 2411 break; 2412 default: 2413 rval = -EINVAL; 2414 break; 2415 } 2416 } else 2417 rval = -EINVAL; 2418 2419 return rval; 2420 } 2421 2422 static int bnx2x_peer_appinfo(struct net_device *netdev, 2423 struct dcb_peer_app_info *info, u16* app_count) 2424 { 2425 int i; 2426 struct bnx2x *bp = netdev_priv(netdev); 2427 2428 DP(NETIF_MSG_LINK, "APP-INFO\n"); 2429 2430 info->willing = (bp->dcbx_remote_flags & DCBX_APP_REM_WILLING) ?: 0; 2431 info->error = (bp->dcbx_remote_flags & DCBX_APP_RX_ERROR) ?: 0; 2432 *app_count = 0; 2433 2434 for (i = 0; i < DCBX_MAX_APP_PROTOCOL; i++) 2435 if (bp->dcbx_remote_feat.app.app_pri_tbl[i].appBitfield & 2436 DCBX_APP_ENTRY_VALID) 2437 (*app_count)++; 2438 return 0; 2439 } 2440 2441 static int bnx2x_peer_apptable(struct net_device *netdev, 2442 struct dcb_app *table) 2443 { 2444 int i, j; 2445 struct bnx2x *bp = netdev_priv(netdev); 2446 2447 DP(NETIF_MSG_LINK, "APP-TABLE\n"); 2448 2449 for (i = 0, j = 0; i < DCBX_MAX_APP_PROTOCOL; i++) { 2450 struct dcbx_app_priority_entry *ent = 2451 &bp->dcbx_remote_feat.app.app_pri_tbl[i]; 2452 2453 if (ent->appBitfield & DCBX_APP_ENTRY_VALID) { 2454 table[j].selector = bnx2x_dcbx_dcbnl_app_idtype(ent); 2455 table[j].priority = bnx2x_dcbx_dcbnl_app_up(ent); 2456 table[j++].protocol = ent->app_id; 2457 } 2458 } 2459 return 0; 2460 } 2461 2462 static int bnx2x_cee_peer_getpg(struct net_device *netdev, struct cee_pg *pg) 2463 { 2464 int i; 2465 struct bnx2x *bp = netdev_priv(netdev); 2466 2467 pg->willing = (bp->dcbx_remote_flags & DCBX_ETS_REM_WILLING) ?: 0; 2468 2469 for (i = 0; i < CEE_DCBX_MAX_PGS; i++) { 2470 pg->pg_bw[i] = 2471 DCBX_PG_BW_GET(bp->dcbx_remote_feat.ets.pg_bw_tbl, i); 2472 pg->prio_pg[i] = 2473 DCBX_PRI_PG_GET(bp->dcbx_remote_feat.ets.pri_pg_tbl, i); 2474 } 2475 return 0; 2476 } 2477 2478 static int bnx2x_cee_peer_getpfc(struct net_device *netdev, 2479 struct cee_pfc *pfc) 2480 { 2481 struct bnx2x *bp = netdev_priv(netdev); 2482 pfc->tcs_supported = bp->dcbx_remote_feat.pfc.pfc_caps; 2483 pfc->pfc_en = bp->dcbx_remote_feat.pfc.pri_en_bitmap; 2484 return 0; 2485 } 2486 2487 const struct dcbnl_rtnl_ops bnx2x_dcbnl_ops = { 2488 .getstate = bnx2x_dcbnl_get_state, 2489 .setstate = bnx2x_dcbnl_set_state, 2490 .getpermhwaddr = bnx2x_dcbnl_get_perm_hw_addr, 2491 .setpgtccfgtx = bnx2x_dcbnl_set_pg_tccfg_tx, 2492 .setpgbwgcfgtx = bnx2x_dcbnl_set_pg_bwgcfg_tx, 2493 .setpgtccfgrx = bnx2x_dcbnl_set_pg_tccfg_rx, 2494 .setpgbwgcfgrx = bnx2x_dcbnl_set_pg_bwgcfg_rx, 2495 .getpgtccfgtx = bnx2x_dcbnl_get_pg_tccfg_tx, 2496 .getpgbwgcfgtx = bnx2x_dcbnl_get_pg_bwgcfg_tx, 2497 .getpgtccfgrx = bnx2x_dcbnl_get_pg_tccfg_rx, 2498 .getpgbwgcfgrx = bnx2x_dcbnl_get_pg_bwgcfg_rx, 2499 .setpfccfg = bnx2x_dcbnl_set_pfc_cfg, 2500 .getpfccfg = bnx2x_dcbnl_get_pfc_cfg, 2501 .setall = bnx2x_dcbnl_set_all, 2502 .getcap = bnx2x_dcbnl_get_cap, 2503 .getnumtcs = bnx2x_dcbnl_get_numtcs, 2504 .setnumtcs = bnx2x_dcbnl_set_numtcs, 2505 .getpfcstate = bnx2x_dcbnl_get_pfc_state, 2506 .setpfcstate = bnx2x_dcbnl_set_pfc_state, 2507 .setapp = bnx2x_dcbnl_set_app_up, 2508 .getdcbx = bnx2x_dcbnl_get_dcbx, 2509 .setdcbx = bnx2x_dcbnl_set_dcbx, 2510 .getfeatcfg = bnx2x_dcbnl_get_featcfg, 2511 .setfeatcfg = bnx2x_dcbnl_set_featcfg, 2512 .peer_getappinfo = bnx2x_peer_appinfo, 2513 .peer_getapptable = bnx2x_peer_apptable, 2514 .cee_peer_getpg = bnx2x_cee_peer_getpg, 2515 .cee_peer_getpfc = bnx2x_cee_peer_getpfc, 2516 }; 2517 2518 #endif /* BCM_DCBNL */ 2519