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, 739 1 << DRV_FLAGS_DCB_CONFIGURED, 740 1); 741 #ifdef BCM_DCBNL 742 /* 743 * Add new app tlvs to dcbnl 744 */ 745 bnx2x_dcbnl_update_applist(bp, false); 746 #endif 747 /* 748 * reconfigure the netdevice with the results of the new 749 * dcbx negotiation. 750 */ 751 bnx2x_dcbx_update_tc_mapping(bp); 752 753 /* 754 * allow other funtions to update their netdevices 755 * accordingly 756 */ 757 if (IS_MF(bp)) 758 bnx2x_link_sync_notify(bp); 759 760 bnx2x_dcbx_stop_hw_tx(bp); 761 762 return; 763 } 764 case BNX2X_DCBX_STATE_TX_PAUSED: 765 DP(NETIF_MSG_LINK, "BNX2X_DCBX_STATE_TX_PAUSED\n"); 766 bnx2x_pfc_set_pfc(bp); 767 768 bnx2x_dcbx_update_ets_params(bp); 769 bnx2x_dcbx_resume_hw_tx(bp); 770 771 return; 772 case BNX2X_DCBX_STATE_TX_RELEASED: 773 DP(NETIF_MSG_LINK, "BNX2X_DCBX_STATE_TX_RELEASED\n"); 774 bnx2x_fw_command(bp, DRV_MSG_CODE_DCBX_PMF_DRV_OK, 0); 775 #ifdef BCM_DCBNL 776 /* 777 * Send a notification for the new negotiated parameters 778 */ 779 dcbnl_cee_notify(bp->dev, RTM_GETDCB, DCB_CMD_CEE_GET, 0, 0); 780 #endif 781 return; 782 default: 783 BNX2X_ERR("Unknown DCBX_STATE\n"); 784 } 785 } 786 787 #define LLDP_ADMIN_MIB_OFFSET(bp) (PORT_MAX*sizeof(struct lldp_params) + \ 788 BP_PORT(bp)*sizeof(struct lldp_admin_mib)) 789 790 static void bnx2x_dcbx_admin_mib_updated_params(struct bnx2x *bp, 791 u32 dcbx_lldp_params_offset) 792 { 793 struct lldp_admin_mib admin_mib; 794 u32 i, other_traf_type = PREDEFINED_APP_IDX_MAX, traf_type = 0; 795 u32 offset = dcbx_lldp_params_offset + LLDP_ADMIN_MIB_OFFSET(bp); 796 797 /*shortcuts*/ 798 struct dcbx_features *af = &admin_mib.features; 799 struct bnx2x_config_dcbx_params *dp = &bp->dcbx_config_params; 800 801 memset(&admin_mib, 0, sizeof(struct lldp_admin_mib)); 802 803 /* Read the data first */ 804 bnx2x_read_data(bp, (u32 *)&admin_mib, offset, 805 sizeof(struct lldp_admin_mib)); 806 807 if (bp->dcbx_enabled == BNX2X_DCBX_ENABLED_ON_NEG_ON) 808 SET_FLAGS(admin_mib.ver_cfg_flags, DCBX_DCBX_ENABLED); 809 else 810 RESET_FLAGS(admin_mib.ver_cfg_flags, DCBX_DCBX_ENABLED); 811 812 if (dp->overwrite_settings == BNX2X_DCBX_OVERWRITE_SETTINGS_ENABLE) { 813 814 RESET_FLAGS(admin_mib.ver_cfg_flags, DCBX_CEE_VERSION_MASK); 815 admin_mib.ver_cfg_flags |= 816 (dp->admin_dcbx_version << DCBX_CEE_VERSION_SHIFT) & 817 DCBX_CEE_VERSION_MASK; 818 819 af->ets.enabled = (u8)dp->admin_ets_enable; 820 821 af->pfc.enabled = (u8)dp->admin_pfc_enable; 822 823 /* FOR IEEE dp->admin_tc_supported_tx_enable */ 824 if (dp->admin_ets_configuration_tx_enable) 825 SET_FLAGS(admin_mib.ver_cfg_flags, 826 DCBX_ETS_CONFIG_TX_ENABLED); 827 else 828 RESET_FLAGS(admin_mib.ver_cfg_flags, 829 DCBX_ETS_CONFIG_TX_ENABLED); 830 /* For IEEE admin_ets_recommendation_tx_enable */ 831 if (dp->admin_pfc_tx_enable) 832 SET_FLAGS(admin_mib.ver_cfg_flags, 833 DCBX_PFC_CONFIG_TX_ENABLED); 834 else 835 RESET_FLAGS(admin_mib.ver_cfg_flags, 836 DCBX_PFC_CONFIG_TX_ENABLED); 837 838 if (dp->admin_application_priority_tx_enable) 839 SET_FLAGS(admin_mib.ver_cfg_flags, 840 DCBX_APP_CONFIG_TX_ENABLED); 841 else 842 RESET_FLAGS(admin_mib.ver_cfg_flags, 843 DCBX_APP_CONFIG_TX_ENABLED); 844 845 if (dp->admin_ets_willing) 846 SET_FLAGS(admin_mib.ver_cfg_flags, DCBX_ETS_WILLING); 847 else 848 RESET_FLAGS(admin_mib.ver_cfg_flags, DCBX_ETS_WILLING); 849 /* For IEEE admin_ets_reco_valid */ 850 if (dp->admin_pfc_willing) 851 SET_FLAGS(admin_mib.ver_cfg_flags, DCBX_PFC_WILLING); 852 else 853 RESET_FLAGS(admin_mib.ver_cfg_flags, DCBX_PFC_WILLING); 854 855 if (dp->admin_app_priority_willing) 856 SET_FLAGS(admin_mib.ver_cfg_flags, DCBX_APP_WILLING); 857 else 858 RESET_FLAGS(admin_mib.ver_cfg_flags, DCBX_APP_WILLING); 859 860 for (i = 0 ; i < DCBX_MAX_NUM_PG_BW_ENTRIES; i++) { 861 DCBX_PG_BW_SET(af->ets.pg_bw_tbl, i, 862 (u8)dp->admin_configuration_bw_precentage[i]); 863 864 DP(NETIF_MSG_LINK, "pg_bw_tbl[%d] = %02x\n", 865 i, DCBX_PG_BW_GET(af->ets.pg_bw_tbl, i)); 866 } 867 868 for (i = 0; i < DCBX_MAX_NUM_PRI_PG_ENTRIES; i++) { 869 DCBX_PRI_PG_SET(af->ets.pri_pg_tbl, i, 870 (u8)dp->admin_configuration_ets_pg[i]); 871 872 DP(NETIF_MSG_LINK, "pri_pg_tbl[%d] = %02x\n", 873 i, DCBX_PRI_PG_GET(af->ets.pri_pg_tbl, i)); 874 } 875 876 /*For IEEE admin_recommendation_bw_precentage 877 *For IEEE admin_recommendation_ets_pg */ 878 af->pfc.pri_en_bitmap = (u8)dp->admin_pfc_bitmap; 879 for (i = 0; i < DCBX_CONFIG_MAX_APP_PROTOCOL; i++) { 880 if (dp->admin_priority_app_table[i].valid) { 881 struct bnx2x_admin_priority_app_table *table = 882 dp->admin_priority_app_table; 883 if ((ETH_TYPE_FCOE == table[i].app_id) && 884 (TRAFFIC_TYPE_ETH == table[i].traffic_type)) 885 traf_type = FCOE_APP_IDX; 886 else if ((TCP_PORT_ISCSI == table[i].app_id) && 887 (TRAFFIC_TYPE_PORT == table[i].traffic_type)) 888 traf_type = ISCSI_APP_IDX; 889 else 890 traf_type = other_traf_type++; 891 892 af->app.app_pri_tbl[traf_type].app_id = 893 table[i].app_id; 894 895 af->app.app_pri_tbl[traf_type].pri_bitmap = 896 (u8)(1 << table[i].priority); 897 898 af->app.app_pri_tbl[traf_type].appBitfield = 899 (DCBX_APP_ENTRY_VALID); 900 901 af->app.app_pri_tbl[traf_type].appBitfield |= 902 (TRAFFIC_TYPE_ETH == table[i].traffic_type) ? 903 DCBX_APP_SF_ETH_TYPE : DCBX_APP_SF_PORT; 904 } 905 } 906 907 af->app.default_pri = (u8)dp->admin_default_priority; 908 909 } 910 911 /* Write the data. */ 912 bnx2x_write_data(bp, (u32 *)&admin_mib, offset, 913 sizeof(struct lldp_admin_mib)); 914 915 } 916 917 void bnx2x_dcbx_set_state(struct bnx2x *bp, bool dcb_on, u32 dcbx_enabled) 918 { 919 if (!CHIP_IS_E1x(bp)) { 920 bp->dcb_state = dcb_on; 921 bp->dcbx_enabled = dcbx_enabled; 922 } else { 923 bp->dcb_state = false; 924 bp->dcbx_enabled = BNX2X_DCBX_ENABLED_INVALID; 925 } 926 DP(NETIF_MSG_LINK, "DCB state [%s:%s]\n", 927 dcb_on ? "ON" : "OFF", 928 dcbx_enabled == BNX2X_DCBX_ENABLED_OFF ? "user-mode" : 929 dcbx_enabled == BNX2X_DCBX_ENABLED_ON_NEG_OFF ? "on-chip static" : 930 dcbx_enabled == BNX2X_DCBX_ENABLED_ON_NEG_ON ? 931 "on-chip with negotiation" : "invalid"); 932 } 933 934 void bnx2x_dcbx_init_params(struct bnx2x *bp) 935 { 936 bp->dcbx_config_params.admin_dcbx_version = 0x0; /* 0 - CEE; 1 - IEEE */ 937 bp->dcbx_config_params.admin_ets_willing = 1; 938 bp->dcbx_config_params.admin_pfc_willing = 1; 939 bp->dcbx_config_params.overwrite_settings = 1; 940 bp->dcbx_config_params.admin_ets_enable = 1; 941 bp->dcbx_config_params.admin_pfc_enable = 1; 942 bp->dcbx_config_params.admin_tc_supported_tx_enable = 1; 943 bp->dcbx_config_params.admin_ets_configuration_tx_enable = 1; 944 bp->dcbx_config_params.admin_pfc_tx_enable = 1; 945 bp->dcbx_config_params.admin_application_priority_tx_enable = 1; 946 bp->dcbx_config_params.admin_ets_reco_valid = 1; 947 bp->dcbx_config_params.admin_app_priority_willing = 1; 948 bp->dcbx_config_params.admin_configuration_bw_precentage[0] = 00; 949 bp->dcbx_config_params.admin_configuration_bw_precentage[1] = 50; 950 bp->dcbx_config_params.admin_configuration_bw_precentage[2] = 50; 951 bp->dcbx_config_params.admin_configuration_bw_precentage[3] = 0; 952 bp->dcbx_config_params.admin_configuration_bw_precentage[4] = 0; 953 bp->dcbx_config_params.admin_configuration_bw_precentage[5] = 0; 954 bp->dcbx_config_params.admin_configuration_bw_precentage[6] = 0; 955 bp->dcbx_config_params.admin_configuration_bw_precentage[7] = 0; 956 bp->dcbx_config_params.admin_configuration_ets_pg[0] = 1; 957 bp->dcbx_config_params.admin_configuration_ets_pg[1] = 0; 958 bp->dcbx_config_params.admin_configuration_ets_pg[2] = 0; 959 bp->dcbx_config_params.admin_configuration_ets_pg[3] = 2; 960 bp->dcbx_config_params.admin_configuration_ets_pg[4] = 0; 961 bp->dcbx_config_params.admin_configuration_ets_pg[5] = 0; 962 bp->dcbx_config_params.admin_configuration_ets_pg[6] = 0; 963 bp->dcbx_config_params.admin_configuration_ets_pg[7] = 0; 964 bp->dcbx_config_params.admin_recommendation_bw_precentage[0] = 0; 965 bp->dcbx_config_params.admin_recommendation_bw_precentage[1] = 1; 966 bp->dcbx_config_params.admin_recommendation_bw_precentage[2] = 2; 967 bp->dcbx_config_params.admin_recommendation_bw_precentage[3] = 0; 968 bp->dcbx_config_params.admin_recommendation_bw_precentage[4] = 7; 969 bp->dcbx_config_params.admin_recommendation_bw_precentage[5] = 5; 970 bp->dcbx_config_params.admin_recommendation_bw_precentage[6] = 6; 971 bp->dcbx_config_params.admin_recommendation_bw_precentage[7] = 7; 972 bp->dcbx_config_params.admin_recommendation_ets_pg[0] = 0; 973 bp->dcbx_config_params.admin_recommendation_ets_pg[1] = 1; 974 bp->dcbx_config_params.admin_recommendation_ets_pg[2] = 2; 975 bp->dcbx_config_params.admin_recommendation_ets_pg[3] = 3; 976 bp->dcbx_config_params.admin_recommendation_ets_pg[4] = 4; 977 bp->dcbx_config_params.admin_recommendation_ets_pg[5] = 5; 978 bp->dcbx_config_params.admin_recommendation_ets_pg[6] = 6; 979 bp->dcbx_config_params.admin_recommendation_ets_pg[7] = 7; 980 bp->dcbx_config_params.admin_pfc_bitmap = 0x8; /* FCoE(3) enable */ 981 bp->dcbx_config_params.admin_priority_app_table[0].valid = 1; 982 bp->dcbx_config_params.admin_priority_app_table[1].valid = 1; 983 bp->dcbx_config_params.admin_priority_app_table[2].valid = 0; 984 bp->dcbx_config_params.admin_priority_app_table[3].valid = 0; 985 bp->dcbx_config_params.admin_priority_app_table[0].priority = 3; 986 bp->dcbx_config_params.admin_priority_app_table[1].priority = 0; 987 bp->dcbx_config_params.admin_priority_app_table[2].priority = 0; 988 bp->dcbx_config_params.admin_priority_app_table[3].priority = 0; 989 bp->dcbx_config_params.admin_priority_app_table[0].traffic_type = 0; 990 bp->dcbx_config_params.admin_priority_app_table[1].traffic_type = 1; 991 bp->dcbx_config_params.admin_priority_app_table[2].traffic_type = 0; 992 bp->dcbx_config_params.admin_priority_app_table[3].traffic_type = 0; 993 bp->dcbx_config_params.admin_priority_app_table[0].app_id = 0x8906; 994 bp->dcbx_config_params.admin_priority_app_table[1].app_id = 3260; 995 bp->dcbx_config_params.admin_priority_app_table[2].app_id = 0; 996 bp->dcbx_config_params.admin_priority_app_table[3].app_id = 0; 997 bp->dcbx_config_params.admin_default_priority = 998 bp->dcbx_config_params.admin_priority_app_table[1].priority; 999 } 1000 1001 void bnx2x_dcbx_init(struct bnx2x *bp) 1002 { 1003 u32 dcbx_lldp_params_offset = SHMEM_LLDP_DCBX_PARAMS_NONE; 1004 1005 if (bp->dcbx_enabled <= 0) 1006 return; 1007 1008 /* validate: 1009 * chip of good for dcbx version, 1010 * dcb is wanted 1011 * the function is pmf 1012 * shmem2 contains DCBX support fields 1013 */ 1014 DP(NETIF_MSG_LINK, "dcb_state %d bp->port.pmf %d\n", 1015 bp->dcb_state, bp->port.pmf); 1016 1017 if (bp->dcb_state == BNX2X_DCB_STATE_ON && bp->port.pmf && 1018 SHMEM2_HAS(bp, dcbx_lldp_params_offset)) { 1019 dcbx_lldp_params_offset = 1020 SHMEM2_RD(bp, dcbx_lldp_params_offset); 1021 1022 DP(NETIF_MSG_LINK, "dcbx_lldp_params_offset 0x%x\n", 1023 dcbx_lldp_params_offset); 1024 1025 bnx2x_update_drv_flags(bp, 1 << DRV_FLAGS_DCB_CONFIGURED, 0); 1026 1027 if (SHMEM_LLDP_DCBX_PARAMS_NONE != dcbx_lldp_params_offset) { 1028 bnx2x_dcbx_admin_mib_updated_params(bp, 1029 dcbx_lldp_params_offset); 1030 1031 /* Let HW start negotiation */ 1032 bnx2x_fw_command(bp, 1033 DRV_MSG_CODE_DCBX_ADMIN_PMF_MSG, 0); 1034 } 1035 } 1036 } 1037 static void 1038 bnx2x_dcbx_print_cos_params(struct bnx2x *bp, 1039 struct bnx2x_func_tx_start_params *pfc_fw_cfg) 1040 { 1041 u8 pri = 0; 1042 u8 cos = 0; 1043 1044 DP(NETIF_MSG_LINK, 1045 "pfc_fw_cfg->dcb_version %x\n", pfc_fw_cfg->dcb_version); 1046 DP(NETIF_MSG_LINK, 1047 "pdev->params.dcbx_port_params.pfc." 1048 "priority_non_pauseable_mask %x\n", 1049 bp->dcbx_port_params.pfc.priority_non_pauseable_mask); 1050 1051 for (cos = 0 ; cos < bp->dcbx_port_params.ets.num_of_cos ; cos++) { 1052 DP(NETIF_MSG_LINK, "pdev->params.dcbx_port_params.ets." 1053 "cos_params[%d].pri_bitmask %x\n", cos, 1054 bp->dcbx_port_params.ets.cos_params[cos].pri_bitmask); 1055 1056 DP(NETIF_MSG_LINK, "pdev->params.dcbx_port_params.ets." 1057 "cos_params[%d].bw_tbl %x\n", cos, 1058 bp->dcbx_port_params.ets.cos_params[cos].bw_tbl); 1059 1060 DP(NETIF_MSG_LINK, "pdev->params.dcbx_port_params.ets." 1061 "cos_params[%d].strict %x\n", cos, 1062 bp->dcbx_port_params.ets.cos_params[cos].strict); 1063 1064 DP(NETIF_MSG_LINK, "pdev->params.dcbx_port_params.ets." 1065 "cos_params[%d].pauseable %x\n", cos, 1066 bp->dcbx_port_params.ets.cos_params[cos].pauseable); 1067 } 1068 1069 for (pri = 0; pri < LLFC_DRIVER_TRAFFIC_TYPE_MAX; pri++) { 1070 DP(NETIF_MSG_LINK, 1071 "pfc_fw_cfg->traffic_type_to_priority_cos[%d]." 1072 "priority %x\n", pri, 1073 pfc_fw_cfg->traffic_type_to_priority_cos[pri].priority); 1074 1075 DP(NETIF_MSG_LINK, 1076 "pfc_fw_cfg->traffic_type_to_priority_cos[%d].cos %x\n", 1077 pri, pfc_fw_cfg->traffic_type_to_priority_cos[pri].cos); 1078 } 1079 } 1080 1081 /* fills help_data according to pg_info */ 1082 static void bnx2x_dcbx_get_num_pg_traf_type(struct bnx2x *bp, 1083 u32 *pg_pri_orginal_spread, 1084 struct pg_help_data *help_data) 1085 { 1086 bool pg_found = false; 1087 u32 i, traf_type, add_traf_type, add_pg; 1088 u32 *ttp = bp->dcbx_port_params.app.traffic_type_priority; 1089 struct pg_entry_help_data *data = help_data->data; /*shotcut*/ 1090 1091 /* Set to invalid */ 1092 for (i = 0; i < LLFC_DRIVER_TRAFFIC_TYPE_MAX; i++) 1093 data[i].pg = DCBX_ILLEGAL_PG; 1094 1095 for (add_traf_type = 0; 1096 add_traf_type < LLFC_DRIVER_TRAFFIC_TYPE_MAX; add_traf_type++) { 1097 pg_found = false; 1098 if (ttp[add_traf_type] < MAX_PFC_PRIORITIES) { 1099 add_pg = (u8)pg_pri_orginal_spread[ttp[add_traf_type]]; 1100 for (traf_type = 0; 1101 traf_type < LLFC_DRIVER_TRAFFIC_TYPE_MAX; 1102 traf_type++) { 1103 if (data[traf_type].pg == add_pg) { 1104 if (!(data[traf_type].pg_priority & 1105 (1 << ttp[add_traf_type]))) 1106 data[traf_type]. 1107 num_of_dif_pri++; 1108 data[traf_type].pg_priority |= 1109 (1 << ttp[add_traf_type]); 1110 pg_found = true; 1111 break; 1112 } 1113 } 1114 if (false == pg_found) { 1115 data[help_data->num_of_pg].pg = add_pg; 1116 data[help_data->num_of_pg].pg_priority = 1117 (1 << ttp[add_traf_type]); 1118 data[help_data->num_of_pg].num_of_dif_pri = 1; 1119 help_data->num_of_pg++; 1120 } 1121 } 1122 DP(NETIF_MSG_LINK, 1123 "add_traf_type %d pg_found %s num_of_pg %d\n", 1124 add_traf_type, (false == pg_found) ? "NO" : "YES", 1125 help_data->num_of_pg); 1126 } 1127 } 1128 1129 static void bnx2x_dcbx_ets_disabled_entry_data(struct bnx2x *bp, 1130 struct cos_help_data *cos_data, 1131 u32 pri_join_mask) 1132 { 1133 /* Only one priority than only one COS */ 1134 cos_data->data[0].pausable = 1135 IS_DCBX_PFC_PRI_ONLY_PAUSE(bp, pri_join_mask); 1136 cos_data->data[0].pri_join_mask = pri_join_mask; 1137 cos_data->data[0].cos_bw = 100; 1138 cos_data->num_of_cos = 1; 1139 } 1140 1141 static inline void bnx2x_dcbx_add_to_cos_bw(struct bnx2x *bp, 1142 struct cos_entry_help_data *data, 1143 u8 pg_bw) 1144 { 1145 if (data->cos_bw == DCBX_INVALID_COS_BW) 1146 data->cos_bw = pg_bw; 1147 else 1148 data->cos_bw += pg_bw; 1149 } 1150 1151 static void bnx2x_dcbx_separate_pauseable_from_non(struct bnx2x *bp, 1152 struct cos_help_data *cos_data, 1153 u32 *pg_pri_orginal_spread, 1154 struct dcbx_ets_feature *ets) 1155 { 1156 u32 pri_tested = 0; 1157 u8 i = 0; 1158 u8 entry = 0; 1159 u8 pg_entry = 0; 1160 u8 num_of_pri = LLFC_DRIVER_TRAFFIC_TYPE_MAX; 1161 1162 cos_data->data[0].pausable = true; 1163 cos_data->data[1].pausable = false; 1164 cos_data->data[0].pri_join_mask = cos_data->data[1].pri_join_mask = 0; 1165 1166 for (i = 0 ; i < num_of_pri ; i++) { 1167 pri_tested = 1 << bp->dcbx_port_params. 1168 app.traffic_type_priority[i]; 1169 1170 if (pri_tested & DCBX_PFC_PRI_NON_PAUSE_MASK(bp)) { 1171 cos_data->data[1].pri_join_mask |= pri_tested; 1172 entry = 1; 1173 } else { 1174 cos_data->data[0].pri_join_mask |= pri_tested; 1175 entry = 0; 1176 } 1177 pg_entry = (u8)pg_pri_orginal_spread[bp->dcbx_port_params. 1178 app.traffic_type_priority[i]]; 1179 /* There can be only one strict pg */ 1180 if (pg_entry < DCBX_MAX_NUM_PG_BW_ENTRIES) 1181 bnx2x_dcbx_add_to_cos_bw(bp, &cos_data->data[entry], 1182 DCBX_PG_BW_GET(ets->pg_bw_tbl, pg_entry)); 1183 else 1184 /* If we join a group and one is strict 1185 * than the bw rulls */ 1186 cos_data->data[entry].strict = 1187 BNX2X_DCBX_STRICT_COS_HIGHEST; 1188 } 1189 if ((0 == cos_data->data[0].pri_join_mask) && 1190 (0 == cos_data->data[1].pri_join_mask)) 1191 BNX2X_ERR("dcbx error: Both groups must have priorities\n"); 1192 } 1193 1194 1195 #ifndef POWER_OF_2 1196 #define POWER_OF_2(x) ((0 != x) && (0 == (x & (x-1)))) 1197 #endif 1198 1199 static void bnx2x_dcbx_2cos_limit_cee_single_pg_to_cos_params(struct bnx2x *bp, 1200 struct pg_help_data *pg_help_data, 1201 struct cos_help_data *cos_data, 1202 u32 pri_join_mask, 1203 u8 num_of_dif_pri) 1204 { 1205 u8 i = 0; 1206 u32 pri_tested = 0; 1207 u32 pri_mask_without_pri = 0; 1208 u32 *ttp = bp->dcbx_port_params.app.traffic_type_priority; 1209 /*debug*/ 1210 if (num_of_dif_pri == 1) { 1211 bnx2x_dcbx_ets_disabled_entry_data(bp, cos_data, pri_join_mask); 1212 return; 1213 } 1214 /* single priority group */ 1215 if (pg_help_data->data[0].pg < DCBX_MAX_NUM_PG_BW_ENTRIES) { 1216 /* If there are both pauseable and non-pauseable priorities, 1217 * the pauseable priorities go to the first queue and 1218 * the non-pauseable priorities go to the second queue. 1219 */ 1220 if (IS_DCBX_PFC_PRI_MIX_PAUSE(bp, pri_join_mask)) { 1221 /* Pauseable */ 1222 cos_data->data[0].pausable = true; 1223 /* Non pauseable.*/ 1224 cos_data->data[1].pausable = false; 1225 1226 if (2 == num_of_dif_pri) { 1227 cos_data->data[0].cos_bw = 50; 1228 cos_data->data[1].cos_bw = 50; 1229 } 1230 1231 if (3 == num_of_dif_pri) { 1232 if (POWER_OF_2(DCBX_PFC_PRI_GET_PAUSE(bp, 1233 pri_join_mask))) { 1234 cos_data->data[0].cos_bw = 33; 1235 cos_data->data[1].cos_bw = 67; 1236 } else { 1237 cos_data->data[0].cos_bw = 67; 1238 cos_data->data[1].cos_bw = 33; 1239 } 1240 } 1241 1242 } else if (IS_DCBX_PFC_PRI_ONLY_PAUSE(bp, pri_join_mask)) { 1243 /* If there are only pauseable priorities, 1244 * then one/two priorities go to the first queue 1245 * and one priority goes to the second queue. 1246 */ 1247 if (2 == num_of_dif_pri) { 1248 cos_data->data[0].cos_bw = 50; 1249 cos_data->data[1].cos_bw = 50; 1250 } else { 1251 cos_data->data[0].cos_bw = 67; 1252 cos_data->data[1].cos_bw = 33; 1253 } 1254 cos_data->data[1].pausable = true; 1255 cos_data->data[0].pausable = true; 1256 /* All priorities except FCOE */ 1257 cos_data->data[0].pri_join_mask = (pri_join_mask & 1258 ((u8)~(1 << ttp[LLFC_TRAFFIC_TYPE_FCOE]))); 1259 /* Only FCOE priority.*/ 1260 cos_data->data[1].pri_join_mask = 1261 (1 << ttp[LLFC_TRAFFIC_TYPE_FCOE]); 1262 } else 1263 /* If there are only non-pauseable priorities, 1264 * they will all go to the same queue. 1265 */ 1266 bnx2x_dcbx_ets_disabled_entry_data(bp, 1267 cos_data, pri_join_mask); 1268 } else { 1269 /* priority group which is not BW limited (PG#15):*/ 1270 if (IS_DCBX_PFC_PRI_MIX_PAUSE(bp, pri_join_mask)) { 1271 /* If there are both pauseable and non-pauseable 1272 * priorities, the pauseable priorities go to the first 1273 * queue and the non-pauseable priorities 1274 * go to the second queue. 1275 */ 1276 if (DCBX_PFC_PRI_GET_PAUSE(bp, pri_join_mask) > 1277 DCBX_PFC_PRI_GET_NON_PAUSE(bp, pri_join_mask)) { 1278 cos_data->data[0].strict = 1279 BNX2X_DCBX_STRICT_COS_HIGHEST; 1280 cos_data->data[1].strict = 1281 BNX2X_DCBX_STRICT_COS_NEXT_LOWER_PRI( 1282 BNX2X_DCBX_STRICT_COS_HIGHEST); 1283 } else { 1284 cos_data->data[0].strict = 1285 BNX2X_DCBX_STRICT_COS_NEXT_LOWER_PRI( 1286 BNX2X_DCBX_STRICT_COS_HIGHEST); 1287 cos_data->data[1].strict = 1288 BNX2X_DCBX_STRICT_COS_HIGHEST; 1289 } 1290 /* Pauseable */ 1291 cos_data->data[0].pausable = true; 1292 /* Non pause-able.*/ 1293 cos_data->data[1].pausable = false; 1294 } else { 1295 /* If there are only pauseable priorities or 1296 * only non-pauseable,* the lower priorities go 1297 * to the first queue and the higherpriorities go 1298 * to the second queue. 1299 */ 1300 cos_data->data[0].pausable = 1301 cos_data->data[1].pausable = 1302 IS_DCBX_PFC_PRI_ONLY_PAUSE(bp, pri_join_mask); 1303 1304 for (i = 0 ; i < LLFC_DRIVER_TRAFFIC_TYPE_MAX; i++) { 1305 pri_tested = 1 << bp->dcbx_port_params. 1306 app.traffic_type_priority[i]; 1307 /* Remove priority tested */ 1308 pri_mask_without_pri = 1309 (pri_join_mask & ((u8)(~pri_tested))); 1310 if (pri_mask_without_pri < pri_tested) 1311 break; 1312 } 1313 1314 if (i == LLFC_DRIVER_TRAFFIC_TYPE_MAX) 1315 BNX2X_ERR("Invalid value for pri_join_mask -" 1316 " could not find a priority\n"); 1317 1318 cos_data->data[0].pri_join_mask = pri_mask_without_pri; 1319 cos_data->data[1].pri_join_mask = pri_tested; 1320 /* Both queues are strict priority, 1321 * and that with the highest priority 1322 * gets the highest strict priority in the arbiter. 1323 */ 1324 cos_data->data[0].strict = 1325 BNX2X_DCBX_STRICT_COS_NEXT_LOWER_PRI( 1326 BNX2X_DCBX_STRICT_COS_HIGHEST); 1327 cos_data->data[1].strict = 1328 BNX2X_DCBX_STRICT_COS_HIGHEST; 1329 } 1330 } 1331 } 1332 1333 static void bnx2x_dcbx_2cos_limit_cee_two_pg_to_cos_params( 1334 struct bnx2x *bp, 1335 struct pg_help_data *pg_help_data, 1336 struct dcbx_ets_feature *ets, 1337 struct cos_help_data *cos_data, 1338 u32 *pg_pri_orginal_spread, 1339 u32 pri_join_mask, 1340 u8 num_of_dif_pri) 1341 { 1342 u8 i = 0; 1343 u8 pg[DCBX_COS_MAX_NUM_E2] = { 0 }; 1344 1345 /* If there are both pauseable and non-pauseable priorities, 1346 * the pauseable priorities go to the first queue and 1347 * the non-pauseable priorities go to the second queue. 1348 */ 1349 if (IS_DCBX_PFC_PRI_MIX_PAUSE(bp, pri_join_mask)) { 1350 if (IS_DCBX_PFC_PRI_MIX_PAUSE(bp, 1351 pg_help_data->data[0].pg_priority) || 1352 IS_DCBX_PFC_PRI_MIX_PAUSE(bp, 1353 pg_help_data->data[1].pg_priority)) { 1354 /* If one PG contains both pauseable and 1355 * non-pauseable priorities then ETS is disabled. 1356 */ 1357 bnx2x_dcbx_separate_pauseable_from_non(bp, cos_data, 1358 pg_pri_orginal_spread, ets); 1359 bp->dcbx_port_params.ets.enabled = false; 1360 return; 1361 } 1362 1363 /* Pauseable */ 1364 cos_data->data[0].pausable = true; 1365 /* Non pauseable. */ 1366 cos_data->data[1].pausable = false; 1367 if (IS_DCBX_PFC_PRI_ONLY_PAUSE(bp, 1368 pg_help_data->data[0].pg_priority)) { 1369 /* 0 is pauseable */ 1370 cos_data->data[0].pri_join_mask = 1371 pg_help_data->data[0].pg_priority; 1372 pg[0] = pg_help_data->data[0].pg; 1373 cos_data->data[1].pri_join_mask = 1374 pg_help_data->data[1].pg_priority; 1375 pg[1] = pg_help_data->data[1].pg; 1376 } else {/* 1 is pauseable */ 1377 cos_data->data[0].pri_join_mask = 1378 pg_help_data->data[1].pg_priority; 1379 pg[0] = pg_help_data->data[1].pg; 1380 cos_data->data[1].pri_join_mask = 1381 pg_help_data->data[0].pg_priority; 1382 pg[1] = pg_help_data->data[0].pg; 1383 } 1384 } else { 1385 /* If there are only pauseable priorities or 1386 * only non-pauseable, each PG goes to a queue. 1387 */ 1388 cos_data->data[0].pausable = cos_data->data[1].pausable = 1389 IS_DCBX_PFC_PRI_ONLY_PAUSE(bp, pri_join_mask); 1390 cos_data->data[0].pri_join_mask = 1391 pg_help_data->data[0].pg_priority; 1392 pg[0] = pg_help_data->data[0].pg; 1393 cos_data->data[1].pri_join_mask = 1394 pg_help_data->data[1].pg_priority; 1395 pg[1] = pg_help_data->data[1].pg; 1396 } 1397 1398 /* There can be only one strict pg */ 1399 for (i = 0 ; i < ARRAY_SIZE(pg); i++) { 1400 if (pg[i] < DCBX_MAX_NUM_PG_BW_ENTRIES) 1401 cos_data->data[i].cos_bw = 1402 DCBX_PG_BW_GET(ets->pg_bw_tbl, pg[i]); 1403 else 1404 cos_data->data[i].strict = 1405 BNX2X_DCBX_STRICT_COS_HIGHEST; 1406 } 1407 } 1408 1409 static int bnx2x_dcbx_join_pgs( 1410 struct bnx2x *bp, 1411 struct dcbx_ets_feature *ets, 1412 struct pg_help_data *pg_help_data, 1413 u8 required_num_of_pg) 1414 { 1415 u8 entry_joined = pg_help_data->num_of_pg - 1; 1416 u8 entry_removed = entry_joined + 1; 1417 u8 pg_joined = 0; 1418 1419 if (required_num_of_pg == 0 || ARRAY_SIZE(pg_help_data->data) 1420 <= pg_help_data->num_of_pg) { 1421 1422 BNX2X_ERR("required_num_of_pg can't be zero\n"); 1423 return -EINVAL; 1424 } 1425 1426 while (required_num_of_pg < pg_help_data->num_of_pg) { 1427 entry_joined = pg_help_data->num_of_pg - 2; 1428 entry_removed = entry_joined + 1; 1429 /* protect index */ 1430 entry_removed %= ARRAY_SIZE(pg_help_data->data); 1431 1432 pg_help_data->data[entry_joined].pg_priority |= 1433 pg_help_data->data[entry_removed].pg_priority; 1434 1435 pg_help_data->data[entry_joined].num_of_dif_pri += 1436 pg_help_data->data[entry_removed].num_of_dif_pri; 1437 1438 if (pg_help_data->data[entry_joined].pg == DCBX_STRICT_PRI_PG || 1439 pg_help_data->data[entry_removed].pg == DCBX_STRICT_PRI_PG) 1440 /* Entries joined strict priority rules */ 1441 pg_help_data->data[entry_joined].pg = 1442 DCBX_STRICT_PRI_PG; 1443 else { 1444 /* Entries can be joined join BW */ 1445 pg_joined = DCBX_PG_BW_GET(ets->pg_bw_tbl, 1446 pg_help_data->data[entry_joined].pg) + 1447 DCBX_PG_BW_GET(ets->pg_bw_tbl, 1448 pg_help_data->data[entry_removed].pg); 1449 1450 DCBX_PG_BW_SET(ets->pg_bw_tbl, 1451 pg_help_data->data[entry_joined].pg, pg_joined); 1452 } 1453 /* Joined the entries */ 1454 pg_help_data->num_of_pg--; 1455 } 1456 1457 return 0; 1458 } 1459 1460 static void bnx2x_dcbx_2cos_limit_cee_three_pg_to_cos_params( 1461 struct bnx2x *bp, 1462 struct pg_help_data *pg_help_data, 1463 struct dcbx_ets_feature *ets, 1464 struct cos_help_data *cos_data, 1465 u32 *pg_pri_orginal_spread, 1466 u32 pri_join_mask, 1467 u8 num_of_dif_pri) 1468 { 1469 u8 i = 0; 1470 u32 pri_tested = 0; 1471 u8 entry = 0; 1472 u8 pg_entry = 0; 1473 bool b_found_strict = false; 1474 u8 num_of_pri = LLFC_DRIVER_TRAFFIC_TYPE_MAX; 1475 1476 cos_data->data[0].pri_join_mask = cos_data->data[1].pri_join_mask = 0; 1477 /* If there are both pauseable and non-pauseable priorities, 1478 * the pauseable priorities go to the first queue and the 1479 * non-pauseable priorities go to the second queue. 1480 */ 1481 if (IS_DCBX_PFC_PRI_MIX_PAUSE(bp, pri_join_mask)) 1482 bnx2x_dcbx_separate_pauseable_from_non(bp, 1483 cos_data, pg_pri_orginal_spread, ets); 1484 else { 1485 /* If two BW-limited PG-s were combined to one queue, 1486 * the BW is their sum. 1487 * 1488 * If there are only pauseable priorities or only non-pauseable, 1489 * and there are both BW-limited and non-BW-limited PG-s, 1490 * the BW-limited PG/s go to one queue and the non-BW-limited 1491 * PG/s go to the second queue. 1492 * 1493 * If there are only pauseable priorities or only non-pauseable 1494 * and all are BW limited, then two priorities go to the first 1495 * queue and one priority goes to the second queue. 1496 * 1497 * We will join this two cases: 1498 * if one is BW limited it will go to the secoend queue 1499 * otherwise the last priority will get it 1500 */ 1501 1502 cos_data->data[0].pausable = cos_data->data[1].pausable = 1503 IS_DCBX_PFC_PRI_ONLY_PAUSE(bp, pri_join_mask); 1504 1505 for (i = 0 ; i < num_of_pri; i++) { 1506 pri_tested = 1 << bp->dcbx_port_params. 1507 app.traffic_type_priority[i]; 1508 pg_entry = (u8)pg_pri_orginal_spread[bp-> 1509 dcbx_port_params.app.traffic_type_priority[i]]; 1510 1511 if (pg_entry < DCBX_MAX_NUM_PG_BW_ENTRIES) { 1512 entry = 0; 1513 1514 if (i == (num_of_pri-1) && 1515 false == b_found_strict) 1516 /* last entry will be handled separately 1517 * If no priority is strict than last 1518 * enty goes to last queue.*/ 1519 entry = 1; 1520 cos_data->data[entry].pri_join_mask |= 1521 pri_tested; 1522 bnx2x_dcbx_add_to_cos_bw(bp, 1523 &cos_data->data[entry], 1524 DCBX_PG_BW_GET(ets->pg_bw_tbl, 1525 pg_entry)); 1526 } else { 1527 b_found_strict = true; 1528 cos_data->data[1].pri_join_mask |= pri_tested; 1529 /* If we join a group and one is strict 1530 * than the bw rulls */ 1531 cos_data->data[1].strict = 1532 BNX2X_DCBX_STRICT_COS_HIGHEST; 1533 } 1534 } 1535 } 1536 } 1537 1538 1539 static void bnx2x_dcbx_2cos_limit_cee_fill_cos_params(struct bnx2x *bp, 1540 struct pg_help_data *help_data, 1541 struct dcbx_ets_feature *ets, 1542 struct cos_help_data *cos_data, 1543 u32 *pg_pri_orginal_spread, 1544 u32 pri_join_mask, 1545 u8 num_of_dif_pri) 1546 { 1547 1548 /* default E2 settings */ 1549 cos_data->num_of_cos = DCBX_COS_MAX_NUM_E2; 1550 1551 switch (help_data->num_of_pg) { 1552 case 1: 1553 bnx2x_dcbx_2cos_limit_cee_single_pg_to_cos_params( 1554 bp, 1555 help_data, 1556 cos_data, 1557 pri_join_mask, 1558 num_of_dif_pri); 1559 break; 1560 case 2: 1561 bnx2x_dcbx_2cos_limit_cee_two_pg_to_cos_params( 1562 bp, 1563 help_data, 1564 ets, 1565 cos_data, 1566 pg_pri_orginal_spread, 1567 pri_join_mask, 1568 num_of_dif_pri); 1569 break; 1570 1571 case 3: 1572 bnx2x_dcbx_2cos_limit_cee_three_pg_to_cos_params( 1573 bp, 1574 help_data, 1575 ets, 1576 cos_data, 1577 pg_pri_orginal_spread, 1578 pri_join_mask, 1579 num_of_dif_pri); 1580 break; 1581 default: 1582 BNX2X_ERR("Wrong pg_help_data.num_of_pg\n"); 1583 bnx2x_dcbx_ets_disabled_entry_data(bp, 1584 cos_data, pri_join_mask); 1585 } 1586 } 1587 1588 static int bnx2x_dcbx_spread_strict_pri(struct bnx2x *bp, 1589 struct cos_help_data *cos_data, 1590 u8 entry, 1591 u8 num_spread_of_entries, 1592 u8 strict_app_pris) 1593 { 1594 u8 strict_pri = BNX2X_DCBX_STRICT_COS_HIGHEST; 1595 u8 num_of_app_pri = MAX_PFC_PRIORITIES; 1596 u8 app_pri_bit = 0; 1597 1598 while (num_spread_of_entries && num_of_app_pri > 0) { 1599 app_pri_bit = 1 << (num_of_app_pri - 1); 1600 if (app_pri_bit & strict_app_pris) { 1601 struct cos_entry_help_data *data = &cos_data-> 1602 data[entry]; 1603 num_spread_of_entries--; 1604 if (num_spread_of_entries == 0) { 1605 /* last entry needed put all the entries left */ 1606 data->cos_bw = DCBX_INVALID_COS_BW; 1607 data->strict = strict_pri; 1608 data->pri_join_mask = strict_app_pris; 1609 data->pausable = DCBX_IS_PFC_PRI_SOME_PAUSE(bp, 1610 data->pri_join_mask); 1611 } else { 1612 strict_app_pris &= ~app_pri_bit; 1613 1614 data->cos_bw = DCBX_INVALID_COS_BW; 1615 data->strict = strict_pri; 1616 data->pri_join_mask = app_pri_bit; 1617 data->pausable = DCBX_IS_PFC_PRI_SOME_PAUSE(bp, 1618 data->pri_join_mask); 1619 } 1620 1621 strict_pri = 1622 BNX2X_DCBX_STRICT_COS_NEXT_LOWER_PRI(strict_pri); 1623 entry++; 1624 } 1625 1626 num_of_app_pri--; 1627 } 1628 1629 if (num_spread_of_entries) 1630 return -EINVAL; 1631 1632 return 0; 1633 } 1634 1635 static u8 bnx2x_dcbx_cee_fill_strict_pri(struct bnx2x *bp, 1636 struct cos_help_data *cos_data, 1637 u8 entry, 1638 u8 num_spread_of_entries, 1639 u8 strict_app_pris) 1640 { 1641 1642 if (bnx2x_dcbx_spread_strict_pri(bp, cos_data, entry, 1643 num_spread_of_entries, 1644 strict_app_pris)) { 1645 struct cos_entry_help_data *data = &cos_data-> 1646 data[entry]; 1647 /* Fill BW entry */ 1648 data->cos_bw = DCBX_INVALID_COS_BW; 1649 data->strict = BNX2X_DCBX_STRICT_COS_HIGHEST; 1650 data->pri_join_mask = strict_app_pris; 1651 data->pausable = DCBX_IS_PFC_PRI_SOME_PAUSE(bp, 1652 data->pri_join_mask); 1653 return 1; 1654 } 1655 1656 return num_spread_of_entries; 1657 } 1658 1659 static void bnx2x_dcbx_cee_fill_cos_params(struct bnx2x *bp, 1660 struct pg_help_data *help_data, 1661 struct dcbx_ets_feature *ets, 1662 struct cos_help_data *cos_data, 1663 u32 pri_join_mask) 1664 1665 { 1666 u8 need_num_of_entries = 0; 1667 u8 i = 0; 1668 u8 entry = 0; 1669 1670 /* 1671 * if the number of requested PG-s in CEE is greater than 3 1672 * then the results are not determined since this is a violation 1673 * of the standard. 1674 */ 1675 if (help_data->num_of_pg > DCBX_COS_MAX_NUM_E3B0) { 1676 if (bnx2x_dcbx_join_pgs(bp, ets, help_data, 1677 DCBX_COS_MAX_NUM_E3B0)) { 1678 BNX2X_ERR("Unable to reduce the number of PGs -" 1679 "we will disables ETS\n"); 1680 bnx2x_dcbx_ets_disabled_entry_data(bp, cos_data, 1681 pri_join_mask); 1682 return; 1683 } 1684 } 1685 1686 for (i = 0 ; i < help_data->num_of_pg; i++) { 1687 struct pg_entry_help_data *pg = &help_data->data[i]; 1688 if (pg->pg < DCBX_MAX_NUM_PG_BW_ENTRIES) { 1689 struct cos_entry_help_data *data = &cos_data-> 1690 data[entry]; 1691 /* Fill BW entry */ 1692 data->cos_bw = DCBX_PG_BW_GET(ets->pg_bw_tbl, pg->pg); 1693 data->strict = BNX2X_DCBX_STRICT_INVALID; 1694 data->pri_join_mask = pg->pg_priority; 1695 data->pausable = DCBX_IS_PFC_PRI_SOME_PAUSE(bp, 1696 data->pri_join_mask); 1697 1698 entry++; 1699 } else { 1700 need_num_of_entries = min_t(u8, 1701 (u8)pg->num_of_dif_pri, 1702 (u8)DCBX_COS_MAX_NUM_E3B0 - 1703 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 } 1717 static void bnx2x_dcbx_fill_cos_params(struct bnx2x *bp, 1718 struct pg_help_data *help_data, 1719 struct dcbx_ets_feature *ets, 1720 u32 *pg_pri_orginal_spread) 1721 { 1722 struct cos_help_data cos_data; 1723 u8 i = 0; 1724 u32 pri_join_mask = 0; 1725 u8 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 " 1780 "pausable COS %d\n", i); 1781 1782 if (!p->pauseable && 1783 DCBX_PFC_PRI_GET_PAUSE(bp, 1784 p->pri_bitmask) != 0) 1785 BNX2X_ERR("Inconsistent config for " 1786 "nonpausable COS %d\n", i); 1787 } 1788 } 1789 1790 if (p->pauseable) 1791 DP(NETIF_MSG_LINK, "COS %d PAUSABLE prijoinmask 0x%x\n", 1792 i, cos_data.data[i].pri_join_mask); 1793 else 1794 DP(NETIF_MSG_LINK, "COS %d NONPAUSABLE prijoinmask " 1795 "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 1802 static void bnx2x_dcbx_get_ets_pri_pg_tbl(struct bnx2x *bp, 1803 u32 *set_configuration_ets_pg, 1804 u32 *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(NETIF_MSG_LINK, "set_configuration_ets_pg[%d] = 0x%x\n", 1812 i, set_configuration_ets_pg[i]); 1813 } 1814 } 1815 1816 static void bnx2x_dcbx_fw_struct(struct bnx2x *bp, 1817 struct bnx2x_func_tx_start_params *pfc_fw_cfg) 1818 { 1819 u16 pri_bit = 0; 1820 u8 cos = 0, pri = 0; 1821 struct priority_cos *tt2cos; 1822 u32 *ttp = bp->dcbx_port_params.app.traffic_type_priority; 1823 1824 memset(pfc_fw_cfg, 0, sizeof(*pfc_fw_cfg)); 1825 1826 /* to disable DCB - the structure must be zeroed */ 1827 if (bp->dcbx_error & DCBX_REMOTE_MIB_ERROR) 1828 return; 1829 1830 /*shortcut*/ 1831 tt2cos = pfc_fw_cfg->traffic_type_to_priority_cos; 1832 1833 /* Fw version should be incremented each update */ 1834 pfc_fw_cfg->dcb_version = ++bp->dcb_version; 1835 pfc_fw_cfg->dcb_enabled = 1; 1836 1837 /* Fill priority parameters */ 1838 for (pri = 0; pri < LLFC_DRIVER_TRAFFIC_TYPE_MAX; pri++) { 1839 tt2cos[pri].priority = ttp[pri]; 1840 pri_bit = 1 << tt2cos[pri].priority; 1841 1842 /* Fill COS parameters based on COS calculated to 1843 * make it more general for future use */ 1844 for (cos = 0; cos < bp->dcbx_port_params.ets.num_of_cos; cos++) 1845 if (bp->dcbx_port_params.ets.cos_params[cos]. 1846 pri_bitmask & pri_bit) 1847 tt2cos[pri].cos = cos; 1848 } 1849 1850 /* we never want the FW to add a 0 vlan tag */ 1851 pfc_fw_cfg->dont_add_pri_0_en = 1; 1852 1853 bnx2x_dcbx_print_cos_params(bp, pfc_fw_cfg); 1854 } 1855 1856 void bnx2x_dcbx_pmf_update(struct bnx2x *bp) 1857 { 1858 /* if we need to syncronize DCBX result from prev PMF 1859 * read it from shmem and update bp and netdev accordingly 1860 */ 1861 if (SHMEM2_HAS(bp, drv_flags) && 1862 GET_FLAGS(SHMEM2_RD(bp, drv_flags), 1 << DRV_FLAGS_DCB_CONFIGURED)) { 1863 /* Read neg results if dcbx is in the FW */ 1864 if (bnx2x_dcbx_read_shmem_neg_results(bp)) 1865 return; 1866 1867 bnx2x_dump_dcbx_drv_param(bp, &bp->dcbx_local_feat, 1868 bp->dcbx_error); 1869 bnx2x_get_dcbx_drv_param(bp, &bp->dcbx_local_feat, 1870 bp->dcbx_error); 1871 #ifdef BCM_DCBNL 1872 /* 1873 * Add new app tlvs to dcbnl 1874 */ 1875 bnx2x_dcbnl_update_applist(bp, false); 1876 /* 1877 * Send a notification for the new negotiated parameters 1878 */ 1879 dcbnl_cee_notify(bp->dev, RTM_GETDCB, DCB_CMD_CEE_GET, 0, 0); 1880 #endif 1881 /* 1882 * reconfigure the netdevice with the results of the new 1883 * dcbx negotiation. 1884 */ 1885 bnx2x_dcbx_update_tc_mapping(bp); 1886 1887 } 1888 } 1889 1890 /* DCB netlink */ 1891 #ifdef BCM_DCBNL 1892 1893 #define BNX2X_DCBX_CAPS (DCB_CAP_DCBX_LLD_MANAGED | \ 1894 DCB_CAP_DCBX_VER_CEE | DCB_CAP_DCBX_STATIC) 1895 1896 static inline bool bnx2x_dcbnl_set_valid(struct bnx2x *bp) 1897 { 1898 /* validate dcbnl call that may change HW state: 1899 * DCB is on and DCBX mode was SUCCESSFULLY set by the user. 1900 */ 1901 return bp->dcb_state && bp->dcbx_mode_uset; 1902 } 1903 1904 static u8 bnx2x_dcbnl_get_state(struct net_device *netdev) 1905 { 1906 struct bnx2x *bp = netdev_priv(netdev); 1907 DP(NETIF_MSG_LINK, "state = %d\n", bp->dcb_state); 1908 return bp->dcb_state; 1909 } 1910 1911 static u8 bnx2x_dcbnl_set_state(struct net_device *netdev, u8 state) 1912 { 1913 struct bnx2x *bp = netdev_priv(netdev); 1914 DP(NETIF_MSG_LINK, "state = %s\n", state ? "on" : "off"); 1915 1916 bnx2x_dcbx_set_state(bp, (state ? true : false), bp->dcbx_enabled); 1917 return 0; 1918 } 1919 1920 static void bnx2x_dcbnl_get_perm_hw_addr(struct net_device *netdev, 1921 u8 *perm_addr) 1922 { 1923 struct bnx2x *bp = netdev_priv(netdev); 1924 DP(NETIF_MSG_LINK, "GET-PERM-ADDR\n"); 1925 1926 /* first the HW mac address */ 1927 memcpy(perm_addr, netdev->dev_addr, netdev->addr_len); 1928 1929 #ifdef BCM_CNIC 1930 /* second SAN address */ 1931 memcpy(perm_addr+netdev->addr_len, bp->fip_mac, netdev->addr_len); 1932 #endif 1933 } 1934 1935 static void bnx2x_dcbnl_set_pg_tccfg_tx(struct net_device *netdev, int prio, 1936 u8 prio_type, u8 pgid, u8 bw_pct, 1937 u8 up_map) 1938 { 1939 struct bnx2x *bp = netdev_priv(netdev); 1940 1941 DP(NETIF_MSG_LINK, "prio[%d] = %d\n", prio, pgid); 1942 if (!bnx2x_dcbnl_set_valid(bp) || prio >= DCBX_MAX_NUM_PRI_PG_ENTRIES) 1943 return; 1944 1945 /** 1946 * bw_pct ingnored - band-width percentage devision between user 1947 * priorities within the same group is not 1948 * standard and hence not supported 1949 * 1950 * prio_type igonred - priority levels within the same group are not 1951 * standard and hence are not supported. According 1952 * to the standard pgid 15 is dedicated to strict 1953 * prioirty traffic (on the port level). 1954 * 1955 * up_map ignored 1956 */ 1957 1958 bp->dcbx_config_params.admin_configuration_ets_pg[prio] = pgid; 1959 bp->dcbx_config_params.admin_ets_configuration_tx_enable = 1; 1960 } 1961 1962 static void bnx2x_dcbnl_set_pg_bwgcfg_tx(struct net_device *netdev, 1963 int pgid, u8 bw_pct) 1964 { 1965 struct bnx2x *bp = netdev_priv(netdev); 1966 DP(NETIF_MSG_LINK, "pgid[%d] = %d\n", pgid, bw_pct); 1967 1968 if (!bnx2x_dcbnl_set_valid(bp) || pgid >= DCBX_MAX_NUM_PG_BW_ENTRIES) 1969 return; 1970 1971 bp->dcbx_config_params.admin_configuration_bw_precentage[pgid] = bw_pct; 1972 bp->dcbx_config_params.admin_ets_configuration_tx_enable = 1; 1973 } 1974 1975 static void bnx2x_dcbnl_set_pg_tccfg_rx(struct net_device *netdev, int prio, 1976 u8 prio_type, u8 pgid, u8 bw_pct, 1977 u8 up_map) 1978 { 1979 struct bnx2x *bp = netdev_priv(netdev); 1980 DP(NETIF_MSG_LINK, "Nothing to set; No RX support\n"); 1981 } 1982 1983 static void bnx2x_dcbnl_set_pg_bwgcfg_rx(struct net_device *netdev, 1984 int pgid, u8 bw_pct) 1985 { 1986 struct bnx2x *bp = netdev_priv(netdev); 1987 DP(NETIF_MSG_LINK, "Nothing to set; No RX support\n"); 1988 } 1989 1990 static void bnx2x_dcbnl_get_pg_tccfg_tx(struct net_device *netdev, int prio, 1991 u8 *prio_type, u8 *pgid, u8 *bw_pct, 1992 u8 *up_map) 1993 { 1994 struct bnx2x *bp = netdev_priv(netdev); 1995 DP(NETIF_MSG_LINK, "prio = %d\n", prio); 1996 1997 /** 1998 * bw_pct ingnored - band-width percentage devision between user 1999 * priorities within the same group is not 2000 * standard and hence not supported 2001 * 2002 * prio_type igonred - priority levels within the same group are not 2003 * standard and hence are not supported. According 2004 * to the standard pgid 15 is dedicated to strict 2005 * prioirty traffic (on the port level). 2006 * 2007 * up_map ignored 2008 */ 2009 *up_map = *bw_pct = *prio_type = *pgid = 0; 2010 2011 if (!bp->dcb_state || prio >= DCBX_MAX_NUM_PRI_PG_ENTRIES) 2012 return; 2013 2014 *pgid = DCBX_PRI_PG_GET(bp->dcbx_local_feat.ets.pri_pg_tbl, prio); 2015 } 2016 2017 static void bnx2x_dcbnl_get_pg_bwgcfg_tx(struct net_device *netdev, 2018 int pgid, u8 *bw_pct) 2019 { 2020 struct bnx2x *bp = netdev_priv(netdev); 2021 DP(NETIF_MSG_LINK, "pgid = %d\n", pgid); 2022 2023 *bw_pct = 0; 2024 2025 if (!bp->dcb_state || pgid >= DCBX_MAX_NUM_PG_BW_ENTRIES) 2026 return; 2027 2028 *bw_pct = DCBX_PG_BW_GET(bp->dcbx_local_feat.ets.pg_bw_tbl, pgid); 2029 } 2030 2031 static void bnx2x_dcbnl_get_pg_tccfg_rx(struct net_device *netdev, int prio, 2032 u8 *prio_type, u8 *pgid, u8 *bw_pct, 2033 u8 *up_map) 2034 { 2035 struct bnx2x *bp = netdev_priv(netdev); 2036 DP(NETIF_MSG_LINK, "Nothing to get; No RX support\n"); 2037 2038 *prio_type = *pgid = *bw_pct = *up_map = 0; 2039 } 2040 2041 static void bnx2x_dcbnl_get_pg_bwgcfg_rx(struct net_device *netdev, 2042 int pgid, u8 *bw_pct) 2043 { 2044 struct bnx2x *bp = netdev_priv(netdev); 2045 DP(NETIF_MSG_LINK, "Nothing to get; No RX support\n"); 2046 2047 *bw_pct = 0; 2048 } 2049 2050 static void bnx2x_dcbnl_set_pfc_cfg(struct net_device *netdev, int prio, 2051 u8 setting) 2052 { 2053 struct bnx2x *bp = netdev_priv(netdev); 2054 DP(NETIF_MSG_LINK, "prio[%d] = %d\n", prio, setting); 2055 2056 if (!bnx2x_dcbnl_set_valid(bp) || prio >= MAX_PFC_PRIORITIES) 2057 return; 2058 2059 bp->dcbx_config_params.admin_pfc_bitmap |= ((setting ? 1 : 0) << prio); 2060 2061 if (setting) 2062 bp->dcbx_config_params.admin_pfc_tx_enable = 1; 2063 } 2064 2065 static void bnx2x_dcbnl_get_pfc_cfg(struct net_device *netdev, int prio, 2066 u8 *setting) 2067 { 2068 struct bnx2x *bp = netdev_priv(netdev); 2069 DP(NETIF_MSG_LINK, "prio = %d\n", prio); 2070 2071 *setting = 0; 2072 2073 if (!bp->dcb_state || prio >= MAX_PFC_PRIORITIES) 2074 return; 2075 2076 *setting = (bp->dcbx_local_feat.pfc.pri_en_bitmap >> prio) & 0x1; 2077 } 2078 2079 static u8 bnx2x_dcbnl_set_all(struct net_device *netdev) 2080 { 2081 struct bnx2x *bp = netdev_priv(netdev); 2082 int rc = 0; 2083 2084 DP(NETIF_MSG_LINK, "SET-ALL\n"); 2085 2086 if (!bnx2x_dcbnl_set_valid(bp)) 2087 return 1; 2088 2089 if (bp->recovery_state != BNX2X_RECOVERY_DONE) { 2090 netdev_err(bp->dev, "Handling parity error recovery. " 2091 "Try again later\n"); 2092 return 1; 2093 } 2094 if (netif_running(bp->dev)) { 2095 bnx2x_nic_unload(bp, UNLOAD_NORMAL); 2096 rc = bnx2x_nic_load(bp, LOAD_NORMAL); 2097 } 2098 DP(NETIF_MSG_LINK, "set_dcbx_params done (%d)\n", rc); 2099 if (rc) 2100 return 1; 2101 2102 return 0; 2103 } 2104 2105 static u8 bnx2x_dcbnl_get_cap(struct net_device *netdev, int capid, u8 *cap) 2106 { 2107 struct bnx2x *bp = netdev_priv(netdev); 2108 u8 rval = 0; 2109 2110 if (bp->dcb_state) { 2111 switch (capid) { 2112 case DCB_CAP_ATTR_PG: 2113 *cap = true; 2114 break; 2115 case DCB_CAP_ATTR_PFC: 2116 *cap = true; 2117 break; 2118 case DCB_CAP_ATTR_UP2TC: 2119 *cap = false; 2120 break; 2121 case DCB_CAP_ATTR_PG_TCS: 2122 *cap = 0x80; /* 8 priorities for PGs */ 2123 break; 2124 case DCB_CAP_ATTR_PFC_TCS: 2125 *cap = 0x80; /* 8 priorities for PFC */ 2126 break; 2127 case DCB_CAP_ATTR_GSP: 2128 *cap = true; 2129 break; 2130 case DCB_CAP_ATTR_BCN: 2131 *cap = false; 2132 break; 2133 case DCB_CAP_ATTR_DCBX: 2134 *cap = BNX2X_DCBX_CAPS; 2135 break; 2136 default: 2137 rval = -EINVAL; 2138 break; 2139 } 2140 } else 2141 rval = -EINVAL; 2142 2143 DP(NETIF_MSG_LINK, "capid %d:%x\n", capid, *cap); 2144 return rval; 2145 } 2146 2147 static u8 bnx2x_dcbnl_get_numtcs(struct net_device *netdev, int tcid, u8 *num) 2148 { 2149 struct bnx2x *bp = netdev_priv(netdev); 2150 u8 rval = 0; 2151 2152 DP(NETIF_MSG_LINK, "tcid %d\n", tcid); 2153 2154 if (bp->dcb_state) { 2155 switch (tcid) { 2156 case DCB_NUMTCS_ATTR_PG: 2157 *num = CHIP_IS_E3B0(bp) ? DCBX_COS_MAX_NUM_E3B0 : 2158 DCBX_COS_MAX_NUM_E2; 2159 break; 2160 case DCB_NUMTCS_ATTR_PFC: 2161 *num = CHIP_IS_E3B0(bp) ? DCBX_COS_MAX_NUM_E3B0 : 2162 DCBX_COS_MAX_NUM_E2; 2163 break; 2164 default: 2165 rval = -EINVAL; 2166 break; 2167 } 2168 } else 2169 rval = -EINVAL; 2170 2171 return rval; 2172 } 2173 2174 static u8 bnx2x_dcbnl_set_numtcs(struct net_device *netdev, int tcid, u8 num) 2175 { 2176 struct bnx2x *bp = netdev_priv(netdev); 2177 DP(NETIF_MSG_LINK, "num tcs = %d; Not supported\n", num); 2178 return -EINVAL; 2179 } 2180 2181 static u8 bnx2x_dcbnl_get_pfc_state(struct net_device *netdev) 2182 { 2183 struct bnx2x *bp = netdev_priv(netdev); 2184 DP(NETIF_MSG_LINK, "state = %d\n", bp->dcbx_local_feat.pfc.enabled); 2185 2186 if (!bp->dcb_state) 2187 return 0; 2188 2189 return bp->dcbx_local_feat.pfc.enabled; 2190 } 2191 2192 static void bnx2x_dcbnl_set_pfc_state(struct net_device *netdev, u8 state) 2193 { 2194 struct bnx2x *bp = netdev_priv(netdev); 2195 DP(NETIF_MSG_LINK, "state = %s\n", state ? "on" : "off"); 2196 2197 if (!bnx2x_dcbnl_set_valid(bp)) 2198 return; 2199 2200 bp->dcbx_config_params.admin_pfc_tx_enable = 2201 bp->dcbx_config_params.admin_pfc_enable = (state ? 1 : 0); 2202 } 2203 2204 static void bnx2x_admin_app_set_ent( 2205 struct bnx2x_admin_priority_app_table *app_ent, 2206 u8 idtype, u16 idval, u8 up) 2207 { 2208 app_ent->valid = 1; 2209 2210 switch (idtype) { 2211 case DCB_APP_IDTYPE_ETHTYPE: 2212 app_ent->traffic_type = TRAFFIC_TYPE_ETH; 2213 break; 2214 case DCB_APP_IDTYPE_PORTNUM: 2215 app_ent->traffic_type = TRAFFIC_TYPE_PORT; 2216 break; 2217 default: 2218 break; /* never gets here */ 2219 } 2220 app_ent->app_id = idval; 2221 app_ent->priority = up; 2222 } 2223 2224 static bool bnx2x_admin_app_is_equal( 2225 struct bnx2x_admin_priority_app_table *app_ent, 2226 u8 idtype, u16 idval) 2227 { 2228 if (!app_ent->valid) 2229 return false; 2230 2231 switch (idtype) { 2232 case DCB_APP_IDTYPE_ETHTYPE: 2233 if (app_ent->traffic_type != TRAFFIC_TYPE_ETH) 2234 return false; 2235 break; 2236 case DCB_APP_IDTYPE_PORTNUM: 2237 if (app_ent->traffic_type != TRAFFIC_TYPE_PORT) 2238 return false; 2239 break; 2240 default: 2241 return false; 2242 } 2243 if (app_ent->app_id != idval) 2244 return false; 2245 2246 return true; 2247 } 2248 2249 static int bnx2x_set_admin_app_up(struct bnx2x *bp, u8 idtype, u16 idval, u8 up) 2250 { 2251 int i, ff; 2252 2253 /* iterate over the app entries looking for idtype and idval */ 2254 for (i = 0, ff = -1; i < DCBX_CONFIG_MAX_APP_PROTOCOL; i++) { 2255 struct bnx2x_admin_priority_app_table *app_ent = 2256 &bp->dcbx_config_params.admin_priority_app_table[i]; 2257 if (bnx2x_admin_app_is_equal(app_ent, idtype, idval)) 2258 break; 2259 2260 if (ff < 0 && !app_ent->valid) 2261 ff = i; 2262 } 2263 if (i < DCBX_CONFIG_MAX_APP_PROTOCOL) 2264 /* if found overwrite up */ 2265 bp->dcbx_config_params. 2266 admin_priority_app_table[i].priority = up; 2267 else if (ff >= 0) 2268 /* not found use first-free */ 2269 bnx2x_admin_app_set_ent( 2270 &bp->dcbx_config_params.admin_priority_app_table[ff], 2271 idtype, idval, up); 2272 else 2273 /* app table is full */ 2274 return -EBUSY; 2275 2276 /* up configured, if not 0 make sure feature is enabled */ 2277 if (up) 2278 bp->dcbx_config_params.admin_application_priority_tx_enable = 1; 2279 2280 return 0; 2281 } 2282 2283 static u8 bnx2x_dcbnl_set_app_up(struct net_device *netdev, u8 idtype, 2284 u16 idval, u8 up) 2285 { 2286 struct bnx2x *bp = netdev_priv(netdev); 2287 2288 DP(NETIF_MSG_LINK, "app_type %d, app_id %x, prio bitmap %d\n", 2289 idtype, idval, up); 2290 2291 if (!bnx2x_dcbnl_set_valid(bp)) 2292 return -EINVAL; 2293 2294 /* verify idtype */ 2295 switch (idtype) { 2296 case DCB_APP_IDTYPE_ETHTYPE: 2297 case DCB_APP_IDTYPE_PORTNUM: 2298 break; 2299 default: 2300 return -EINVAL; 2301 } 2302 return bnx2x_set_admin_app_up(bp, idtype, idval, up); 2303 } 2304 2305 static u8 bnx2x_dcbnl_get_dcbx(struct net_device *netdev) 2306 { 2307 struct bnx2x *bp = netdev_priv(netdev); 2308 u8 state; 2309 2310 state = DCB_CAP_DCBX_LLD_MANAGED | DCB_CAP_DCBX_VER_CEE; 2311 2312 if (bp->dcbx_enabled == BNX2X_DCBX_ENABLED_ON_NEG_OFF) 2313 state |= DCB_CAP_DCBX_STATIC; 2314 2315 return state; 2316 } 2317 2318 static u8 bnx2x_dcbnl_set_dcbx(struct net_device *netdev, u8 state) 2319 { 2320 struct bnx2x *bp = netdev_priv(netdev); 2321 DP(NETIF_MSG_LINK, "state = %02x\n", state); 2322 2323 /* set dcbx mode */ 2324 2325 if ((state & BNX2X_DCBX_CAPS) != state) { 2326 BNX2X_ERR("Requested DCBX mode %x is beyond advertised " 2327 "capabilities\n", state); 2328 return 1; 2329 } 2330 2331 if (bp->dcb_state != BNX2X_DCB_STATE_ON) { 2332 BNX2X_ERR("DCB turned off, DCBX configuration is invalid\n"); 2333 return 1; 2334 } 2335 2336 if (state & DCB_CAP_DCBX_STATIC) 2337 bp->dcbx_enabled = BNX2X_DCBX_ENABLED_ON_NEG_OFF; 2338 else 2339 bp->dcbx_enabled = BNX2X_DCBX_ENABLED_ON_NEG_ON; 2340 2341 bp->dcbx_mode_uset = true; 2342 return 0; 2343 } 2344 2345 static u8 bnx2x_dcbnl_get_featcfg(struct net_device *netdev, int featid, 2346 u8 *flags) 2347 { 2348 struct bnx2x *bp = netdev_priv(netdev); 2349 u8 rval = 0; 2350 2351 DP(NETIF_MSG_LINK, "featid %d\n", featid); 2352 2353 if (bp->dcb_state) { 2354 *flags = 0; 2355 switch (featid) { 2356 case DCB_FEATCFG_ATTR_PG: 2357 if (bp->dcbx_local_feat.ets.enabled) 2358 *flags |= DCB_FEATCFG_ENABLE; 2359 if (bp->dcbx_error & DCBX_LOCAL_ETS_ERROR) 2360 *flags |= DCB_FEATCFG_ERROR; 2361 break; 2362 case DCB_FEATCFG_ATTR_PFC: 2363 if (bp->dcbx_local_feat.pfc.enabled) 2364 *flags |= DCB_FEATCFG_ENABLE; 2365 if (bp->dcbx_error & (DCBX_LOCAL_PFC_ERROR | 2366 DCBX_LOCAL_PFC_MISMATCH)) 2367 *flags |= DCB_FEATCFG_ERROR; 2368 break; 2369 case DCB_FEATCFG_ATTR_APP: 2370 if (bp->dcbx_local_feat.app.enabled) 2371 *flags |= DCB_FEATCFG_ENABLE; 2372 if (bp->dcbx_error & (DCBX_LOCAL_APP_ERROR | 2373 DCBX_LOCAL_APP_MISMATCH)) 2374 *flags |= DCB_FEATCFG_ERROR; 2375 break; 2376 default: 2377 rval = -EINVAL; 2378 break; 2379 } 2380 } else 2381 rval = -EINVAL; 2382 2383 return rval; 2384 } 2385 2386 static u8 bnx2x_dcbnl_set_featcfg(struct net_device *netdev, int featid, 2387 u8 flags) 2388 { 2389 struct bnx2x *bp = netdev_priv(netdev); 2390 u8 rval = 0; 2391 2392 DP(NETIF_MSG_LINK, "featid = %d flags = %02x\n", featid, flags); 2393 2394 /* ignore the 'advertise' flag */ 2395 if (bnx2x_dcbnl_set_valid(bp)) { 2396 switch (featid) { 2397 case DCB_FEATCFG_ATTR_PG: 2398 bp->dcbx_config_params.admin_ets_enable = 2399 flags & DCB_FEATCFG_ENABLE ? 1 : 0; 2400 bp->dcbx_config_params.admin_ets_willing = 2401 flags & DCB_FEATCFG_WILLING ? 1 : 0; 2402 break; 2403 case DCB_FEATCFG_ATTR_PFC: 2404 bp->dcbx_config_params.admin_pfc_enable = 2405 flags & DCB_FEATCFG_ENABLE ? 1 : 0; 2406 bp->dcbx_config_params.admin_pfc_willing = 2407 flags & DCB_FEATCFG_WILLING ? 1 : 0; 2408 break; 2409 case DCB_FEATCFG_ATTR_APP: 2410 /* ignore enable, always enabled */ 2411 bp->dcbx_config_params.admin_app_priority_willing = 2412 flags & DCB_FEATCFG_WILLING ? 1 : 0; 2413 break; 2414 default: 2415 rval = -EINVAL; 2416 break; 2417 } 2418 } else 2419 rval = -EINVAL; 2420 2421 return rval; 2422 } 2423 2424 static int bnx2x_peer_appinfo(struct net_device *netdev, 2425 struct dcb_peer_app_info *info, u16* app_count) 2426 { 2427 int i; 2428 struct bnx2x *bp = netdev_priv(netdev); 2429 2430 DP(NETIF_MSG_LINK, "APP-INFO\n"); 2431 2432 info->willing = (bp->dcbx_remote_flags & DCBX_APP_REM_WILLING) ?: 0; 2433 info->error = (bp->dcbx_remote_flags & DCBX_APP_RX_ERROR) ?: 0; 2434 *app_count = 0; 2435 2436 for (i = 0; i < DCBX_MAX_APP_PROTOCOL; i++) 2437 if (bp->dcbx_remote_feat.app.app_pri_tbl[i].appBitfield & 2438 DCBX_APP_ENTRY_VALID) 2439 (*app_count)++; 2440 return 0; 2441 } 2442 2443 static int bnx2x_peer_apptable(struct net_device *netdev, 2444 struct dcb_app *table) 2445 { 2446 int i, j; 2447 struct bnx2x *bp = netdev_priv(netdev); 2448 2449 DP(NETIF_MSG_LINK, "APP-TABLE\n"); 2450 2451 for (i = 0, j = 0; i < DCBX_MAX_APP_PROTOCOL; i++) { 2452 struct dcbx_app_priority_entry *ent = 2453 &bp->dcbx_remote_feat.app.app_pri_tbl[i]; 2454 2455 if (ent->appBitfield & DCBX_APP_ENTRY_VALID) { 2456 table[j].selector = bnx2x_dcbx_dcbnl_app_idtype(ent); 2457 table[j].priority = bnx2x_dcbx_dcbnl_app_up(ent); 2458 table[j++].protocol = ent->app_id; 2459 } 2460 } 2461 return 0; 2462 } 2463 2464 static int bnx2x_cee_peer_getpg(struct net_device *netdev, struct cee_pg *pg) 2465 { 2466 int i; 2467 struct bnx2x *bp = netdev_priv(netdev); 2468 2469 pg->willing = (bp->dcbx_remote_flags & DCBX_ETS_REM_WILLING) ?: 0; 2470 2471 for (i = 0; i < CEE_DCBX_MAX_PGS; i++) { 2472 pg->pg_bw[i] = 2473 DCBX_PG_BW_GET(bp->dcbx_remote_feat.ets.pg_bw_tbl, i); 2474 pg->prio_pg[i] = 2475 DCBX_PRI_PG_GET(bp->dcbx_remote_feat.ets.pri_pg_tbl, i); 2476 } 2477 return 0; 2478 } 2479 2480 static int bnx2x_cee_peer_getpfc(struct net_device *netdev, 2481 struct cee_pfc *pfc) 2482 { 2483 struct bnx2x *bp = netdev_priv(netdev); 2484 pfc->tcs_supported = bp->dcbx_remote_feat.pfc.pfc_caps; 2485 pfc->pfc_en = bp->dcbx_remote_feat.pfc.pri_en_bitmap; 2486 return 0; 2487 } 2488 2489 const struct dcbnl_rtnl_ops bnx2x_dcbnl_ops = { 2490 .getstate = bnx2x_dcbnl_get_state, 2491 .setstate = bnx2x_dcbnl_set_state, 2492 .getpermhwaddr = bnx2x_dcbnl_get_perm_hw_addr, 2493 .setpgtccfgtx = bnx2x_dcbnl_set_pg_tccfg_tx, 2494 .setpgbwgcfgtx = bnx2x_dcbnl_set_pg_bwgcfg_tx, 2495 .setpgtccfgrx = bnx2x_dcbnl_set_pg_tccfg_rx, 2496 .setpgbwgcfgrx = bnx2x_dcbnl_set_pg_bwgcfg_rx, 2497 .getpgtccfgtx = bnx2x_dcbnl_get_pg_tccfg_tx, 2498 .getpgbwgcfgtx = bnx2x_dcbnl_get_pg_bwgcfg_tx, 2499 .getpgtccfgrx = bnx2x_dcbnl_get_pg_tccfg_rx, 2500 .getpgbwgcfgrx = bnx2x_dcbnl_get_pg_bwgcfg_rx, 2501 .setpfccfg = bnx2x_dcbnl_set_pfc_cfg, 2502 .getpfccfg = bnx2x_dcbnl_get_pfc_cfg, 2503 .setall = bnx2x_dcbnl_set_all, 2504 .getcap = bnx2x_dcbnl_get_cap, 2505 .getnumtcs = bnx2x_dcbnl_get_numtcs, 2506 .setnumtcs = bnx2x_dcbnl_set_numtcs, 2507 .getpfcstate = bnx2x_dcbnl_get_pfc_state, 2508 .setpfcstate = bnx2x_dcbnl_set_pfc_state, 2509 .setapp = bnx2x_dcbnl_set_app_up, 2510 .getdcbx = bnx2x_dcbnl_get_dcbx, 2511 .setdcbx = bnx2x_dcbnl_set_dcbx, 2512 .getfeatcfg = bnx2x_dcbnl_get_featcfg, 2513 .setfeatcfg = bnx2x_dcbnl_set_featcfg, 2514 .peer_getappinfo = bnx2x_peer_appinfo, 2515 .peer_getapptable = bnx2x_peer_apptable, 2516 .cee_peer_getpg = bnx2x_cee_peer_getpg, 2517 .cee_peer_getpfc = bnx2x_cee_peer_getpfc, 2518 }; 2519 2520 #endif /* BCM_DCBNL */ 2521