1 // SPDX-License-Identifier: GPL-2.0 2 /* Copyright(c) 2013 - 2018 Intel Corporation. */ 3 4 #include "i40e_adminq.h" 5 #include "i40e_prototype.h" 6 #include "i40e_dcb.h" 7 8 /** 9 * i40e_get_dcbx_status 10 * @hw: pointer to the hw struct 11 * @status: Embedded DCBX Engine Status 12 * 13 * Get the DCBX status from the Firmware 14 **/ 15 i40e_status i40e_get_dcbx_status(struct i40e_hw *hw, u16 *status) 16 { 17 u32 reg; 18 19 if (!status) 20 return I40E_ERR_PARAM; 21 22 reg = rd32(hw, I40E_PRTDCB_GENS); 23 *status = (u16)((reg & I40E_PRTDCB_GENS_DCBX_STATUS_MASK) >> 24 I40E_PRTDCB_GENS_DCBX_STATUS_SHIFT); 25 26 return 0; 27 } 28 29 /** 30 * i40e_parse_ieee_etscfg_tlv 31 * @tlv: IEEE 802.1Qaz ETS CFG TLV 32 * @dcbcfg: Local store to update ETS CFG data 33 * 34 * Parses IEEE 802.1Qaz ETS CFG TLV 35 **/ 36 static void i40e_parse_ieee_etscfg_tlv(struct i40e_lldp_org_tlv *tlv, 37 struct i40e_dcbx_config *dcbcfg) 38 { 39 struct i40e_dcb_ets_config *etscfg; 40 u8 *buf = tlv->tlvinfo; 41 u16 offset = 0; 42 u8 priority; 43 int i; 44 45 /* First Octet post subtype 46 * -------------------------- 47 * |will-|CBS | Re- | Max | 48 * |ing | |served| TCs | 49 * -------------------------- 50 * |1bit | 1bit|3 bits|3bits| 51 */ 52 etscfg = &dcbcfg->etscfg; 53 etscfg->willing = (u8)((buf[offset] & I40E_IEEE_ETS_WILLING_MASK) >> 54 I40E_IEEE_ETS_WILLING_SHIFT); 55 etscfg->cbs = (u8)((buf[offset] & I40E_IEEE_ETS_CBS_MASK) >> 56 I40E_IEEE_ETS_CBS_SHIFT); 57 etscfg->maxtcs = (u8)((buf[offset] & I40E_IEEE_ETS_MAXTC_MASK) >> 58 I40E_IEEE_ETS_MAXTC_SHIFT); 59 60 /* Move offset to Priority Assignment Table */ 61 offset++; 62 63 /* Priority Assignment Table (4 octets) 64 * Octets:| 1 | 2 | 3 | 4 | 65 * ----------------------------------------- 66 * |pri0|pri1|pri2|pri3|pri4|pri5|pri6|pri7| 67 * ----------------------------------------- 68 * Bits:|7 4|3 0|7 4|3 0|7 4|3 0|7 4|3 0| 69 * ----------------------------------------- 70 */ 71 for (i = 0; i < 4; i++) { 72 priority = (u8)((buf[offset] & I40E_IEEE_ETS_PRIO_1_MASK) >> 73 I40E_IEEE_ETS_PRIO_1_SHIFT); 74 etscfg->prioritytable[i * 2] = priority; 75 priority = (u8)((buf[offset] & I40E_IEEE_ETS_PRIO_0_MASK) >> 76 I40E_IEEE_ETS_PRIO_0_SHIFT); 77 etscfg->prioritytable[i * 2 + 1] = priority; 78 offset++; 79 } 80 81 /* TC Bandwidth Table (8 octets) 82 * Octets:| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 83 * --------------------------------- 84 * |tc0|tc1|tc2|tc3|tc4|tc5|tc6|tc7| 85 * --------------------------------- 86 */ 87 for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) 88 etscfg->tcbwtable[i] = buf[offset++]; 89 90 /* TSA Assignment Table (8 octets) 91 * Octets:| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 92 * --------------------------------- 93 * |tc0|tc1|tc2|tc3|tc4|tc5|tc6|tc7| 94 * --------------------------------- 95 */ 96 for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) 97 etscfg->tsatable[i] = buf[offset++]; 98 } 99 100 /** 101 * i40e_parse_ieee_etsrec_tlv 102 * @tlv: IEEE 802.1Qaz ETS REC TLV 103 * @dcbcfg: Local store to update ETS REC data 104 * 105 * Parses IEEE 802.1Qaz ETS REC TLV 106 **/ 107 static void i40e_parse_ieee_etsrec_tlv(struct i40e_lldp_org_tlv *tlv, 108 struct i40e_dcbx_config *dcbcfg) 109 { 110 u8 *buf = tlv->tlvinfo; 111 u16 offset = 0; 112 u8 priority; 113 int i; 114 115 /* Move offset to priority table */ 116 offset++; 117 118 /* Priority Assignment Table (4 octets) 119 * Octets:| 1 | 2 | 3 | 4 | 120 * ----------------------------------------- 121 * |pri0|pri1|pri2|pri3|pri4|pri5|pri6|pri7| 122 * ----------------------------------------- 123 * Bits:|7 4|3 0|7 4|3 0|7 4|3 0|7 4|3 0| 124 * ----------------------------------------- 125 */ 126 for (i = 0; i < 4; i++) { 127 priority = (u8)((buf[offset] & I40E_IEEE_ETS_PRIO_1_MASK) >> 128 I40E_IEEE_ETS_PRIO_1_SHIFT); 129 dcbcfg->etsrec.prioritytable[i*2] = priority; 130 priority = (u8)((buf[offset] & I40E_IEEE_ETS_PRIO_0_MASK) >> 131 I40E_IEEE_ETS_PRIO_0_SHIFT); 132 dcbcfg->etsrec.prioritytable[i*2 + 1] = priority; 133 offset++; 134 } 135 136 /* TC Bandwidth Table (8 octets) 137 * Octets:| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 138 * --------------------------------- 139 * |tc0|tc1|tc2|tc3|tc4|tc5|tc6|tc7| 140 * --------------------------------- 141 */ 142 for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) 143 dcbcfg->etsrec.tcbwtable[i] = buf[offset++]; 144 145 /* TSA Assignment Table (8 octets) 146 * Octets:| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 147 * --------------------------------- 148 * |tc0|tc1|tc2|tc3|tc4|tc5|tc6|tc7| 149 * --------------------------------- 150 */ 151 for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) 152 dcbcfg->etsrec.tsatable[i] = buf[offset++]; 153 } 154 155 /** 156 * i40e_parse_ieee_pfccfg_tlv 157 * @tlv: IEEE 802.1Qaz PFC CFG TLV 158 * @dcbcfg: Local store to update PFC CFG data 159 * 160 * Parses IEEE 802.1Qaz PFC CFG TLV 161 **/ 162 static void i40e_parse_ieee_pfccfg_tlv(struct i40e_lldp_org_tlv *tlv, 163 struct i40e_dcbx_config *dcbcfg) 164 { 165 u8 *buf = tlv->tlvinfo; 166 167 /* ---------------------------------------- 168 * |will-|MBC | Re- | PFC | PFC Enable | 169 * |ing | |served| cap | | 170 * ----------------------------------------- 171 * |1bit | 1bit|2 bits|4bits| 1 octet | 172 */ 173 dcbcfg->pfc.willing = (u8)((buf[0] & I40E_IEEE_PFC_WILLING_MASK) >> 174 I40E_IEEE_PFC_WILLING_SHIFT); 175 dcbcfg->pfc.mbc = (u8)((buf[0] & I40E_IEEE_PFC_MBC_MASK) >> 176 I40E_IEEE_PFC_MBC_SHIFT); 177 dcbcfg->pfc.pfccap = (u8)((buf[0] & I40E_IEEE_PFC_CAP_MASK) >> 178 I40E_IEEE_PFC_CAP_SHIFT); 179 dcbcfg->pfc.pfcenable = buf[1]; 180 } 181 182 /** 183 * i40e_parse_ieee_app_tlv 184 * @tlv: IEEE 802.1Qaz APP TLV 185 * @dcbcfg: Local store to update APP PRIO data 186 * 187 * Parses IEEE 802.1Qaz APP PRIO TLV 188 **/ 189 static void i40e_parse_ieee_app_tlv(struct i40e_lldp_org_tlv *tlv, 190 struct i40e_dcbx_config *dcbcfg) 191 { 192 u16 typelength; 193 u16 offset = 0; 194 u16 length; 195 int i = 0; 196 u8 *buf; 197 198 typelength = ntohs(tlv->typelength); 199 length = (u16)((typelength & I40E_LLDP_TLV_LEN_MASK) >> 200 I40E_LLDP_TLV_LEN_SHIFT); 201 buf = tlv->tlvinfo; 202 203 /* The App priority table starts 5 octets after TLV header */ 204 length -= (sizeof(tlv->ouisubtype) + 1); 205 206 /* Move offset to App Priority Table */ 207 offset++; 208 209 /* Application Priority Table (3 octets) 210 * Octets:| 1 | 2 | 3 | 211 * ----------------------------------------- 212 * |Priority|Rsrvd| Sel | Protocol ID | 213 * ----------------------------------------- 214 * Bits:|23 21|20 19|18 16|15 0| 215 * ----------------------------------------- 216 */ 217 while (offset < length) { 218 dcbcfg->app[i].priority = (u8)((buf[offset] & 219 I40E_IEEE_APP_PRIO_MASK) >> 220 I40E_IEEE_APP_PRIO_SHIFT); 221 dcbcfg->app[i].selector = (u8)((buf[offset] & 222 I40E_IEEE_APP_SEL_MASK) >> 223 I40E_IEEE_APP_SEL_SHIFT); 224 dcbcfg->app[i].protocolid = (buf[offset + 1] << 0x8) | 225 buf[offset + 2]; 226 /* Move to next app */ 227 offset += 3; 228 i++; 229 if (i >= I40E_DCBX_MAX_APPS) 230 break; 231 } 232 233 dcbcfg->numapps = i; 234 } 235 236 /** 237 * i40e_parse_ieee_etsrec_tlv 238 * @tlv: IEEE 802.1Qaz TLV 239 * @dcbcfg: Local store to update ETS REC data 240 * 241 * Get the TLV subtype and send it to parsing function 242 * based on the subtype value 243 **/ 244 static void i40e_parse_ieee_tlv(struct i40e_lldp_org_tlv *tlv, 245 struct i40e_dcbx_config *dcbcfg) 246 { 247 u32 ouisubtype; 248 u8 subtype; 249 250 ouisubtype = ntohl(tlv->ouisubtype); 251 subtype = (u8)((ouisubtype & I40E_LLDP_TLV_SUBTYPE_MASK) >> 252 I40E_LLDP_TLV_SUBTYPE_SHIFT); 253 switch (subtype) { 254 case I40E_IEEE_SUBTYPE_ETS_CFG: 255 i40e_parse_ieee_etscfg_tlv(tlv, dcbcfg); 256 break; 257 case I40E_IEEE_SUBTYPE_ETS_REC: 258 i40e_parse_ieee_etsrec_tlv(tlv, dcbcfg); 259 break; 260 case I40E_IEEE_SUBTYPE_PFC_CFG: 261 i40e_parse_ieee_pfccfg_tlv(tlv, dcbcfg); 262 break; 263 case I40E_IEEE_SUBTYPE_APP_PRI: 264 i40e_parse_ieee_app_tlv(tlv, dcbcfg); 265 break; 266 default: 267 break; 268 } 269 } 270 271 /** 272 * i40e_parse_cee_pgcfg_tlv 273 * @tlv: CEE DCBX PG CFG TLV 274 * @dcbcfg: Local store to update ETS CFG data 275 * 276 * Parses CEE DCBX PG CFG TLV 277 **/ 278 static void i40e_parse_cee_pgcfg_tlv(struct i40e_cee_feat_tlv *tlv, 279 struct i40e_dcbx_config *dcbcfg) 280 { 281 struct i40e_dcb_ets_config *etscfg; 282 u8 *buf = tlv->tlvinfo; 283 u16 offset = 0; 284 u8 priority; 285 int i; 286 287 etscfg = &dcbcfg->etscfg; 288 289 if (tlv->en_will_err & I40E_CEE_FEAT_TLV_WILLING_MASK) 290 etscfg->willing = 1; 291 292 etscfg->cbs = 0; 293 /* Priority Group Table (4 octets) 294 * Octets:| 1 | 2 | 3 | 4 | 295 * ----------------------------------------- 296 * |pri0|pri1|pri2|pri3|pri4|pri5|pri6|pri7| 297 * ----------------------------------------- 298 * Bits:|7 4|3 0|7 4|3 0|7 4|3 0|7 4|3 0| 299 * ----------------------------------------- 300 */ 301 for (i = 0; i < 4; i++) { 302 priority = (u8)((buf[offset] & I40E_CEE_PGID_PRIO_1_MASK) >> 303 I40E_CEE_PGID_PRIO_1_SHIFT); 304 etscfg->prioritytable[i * 2] = priority; 305 priority = (u8)((buf[offset] & I40E_CEE_PGID_PRIO_0_MASK) >> 306 I40E_CEE_PGID_PRIO_0_SHIFT); 307 etscfg->prioritytable[i * 2 + 1] = priority; 308 offset++; 309 } 310 311 /* PG Percentage Table (8 octets) 312 * Octets:| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 313 * --------------------------------- 314 * |pg0|pg1|pg2|pg3|pg4|pg5|pg6|pg7| 315 * --------------------------------- 316 */ 317 for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) 318 etscfg->tcbwtable[i] = buf[offset++]; 319 320 /* Number of TCs supported (1 octet) */ 321 etscfg->maxtcs = buf[offset]; 322 } 323 324 /** 325 * i40e_parse_cee_pfccfg_tlv 326 * @tlv: CEE DCBX PFC CFG TLV 327 * @dcbcfg: Local store to update PFC CFG data 328 * 329 * Parses CEE DCBX PFC CFG TLV 330 **/ 331 static void i40e_parse_cee_pfccfg_tlv(struct i40e_cee_feat_tlv *tlv, 332 struct i40e_dcbx_config *dcbcfg) 333 { 334 u8 *buf = tlv->tlvinfo; 335 336 if (tlv->en_will_err & I40E_CEE_FEAT_TLV_WILLING_MASK) 337 dcbcfg->pfc.willing = 1; 338 339 /* ------------------------ 340 * | PFC Enable | PFC TCs | 341 * ------------------------ 342 * | 1 octet | 1 octet | 343 */ 344 dcbcfg->pfc.pfcenable = buf[0]; 345 dcbcfg->pfc.pfccap = buf[1]; 346 } 347 348 /** 349 * i40e_parse_cee_app_tlv 350 * @tlv: CEE DCBX APP TLV 351 * @dcbcfg: Local store to update APP PRIO data 352 * 353 * Parses CEE DCBX APP PRIO TLV 354 **/ 355 static void i40e_parse_cee_app_tlv(struct i40e_cee_feat_tlv *tlv, 356 struct i40e_dcbx_config *dcbcfg) 357 { 358 u16 length, typelength, offset = 0; 359 struct i40e_cee_app_prio *app; 360 u8 i; 361 362 typelength = ntohs(tlv->hdr.typelen); 363 length = (u16)((typelength & I40E_LLDP_TLV_LEN_MASK) >> 364 I40E_LLDP_TLV_LEN_SHIFT); 365 366 dcbcfg->numapps = length / sizeof(*app); 367 368 if (!dcbcfg->numapps) 369 return; 370 if (dcbcfg->numapps > I40E_DCBX_MAX_APPS) 371 dcbcfg->numapps = I40E_DCBX_MAX_APPS; 372 373 for (i = 0; i < dcbcfg->numapps; i++) { 374 u8 up, selector; 375 376 app = (struct i40e_cee_app_prio *)(tlv->tlvinfo + offset); 377 for (up = 0; up < I40E_MAX_USER_PRIORITY; up++) { 378 if (app->prio_map & BIT(up)) 379 break; 380 } 381 dcbcfg->app[i].priority = up; 382 383 /* Get Selector from lower 2 bits, and convert to IEEE */ 384 selector = (app->upper_oui_sel & I40E_CEE_APP_SELECTOR_MASK); 385 switch (selector) { 386 case I40E_CEE_APP_SEL_ETHTYPE: 387 dcbcfg->app[i].selector = I40E_APP_SEL_ETHTYPE; 388 break; 389 case I40E_CEE_APP_SEL_TCPIP: 390 dcbcfg->app[i].selector = I40E_APP_SEL_TCPIP; 391 break; 392 default: 393 /* Keep selector as it is for unknown types */ 394 dcbcfg->app[i].selector = selector; 395 } 396 397 dcbcfg->app[i].protocolid = ntohs(app->protocol); 398 /* Move to next app */ 399 offset += sizeof(*app); 400 } 401 } 402 403 /** 404 * i40e_parse_cee_tlv 405 * @tlv: CEE DCBX TLV 406 * @dcbcfg: Local store to update DCBX config data 407 * 408 * Get the TLV subtype and send it to parsing function 409 * based on the subtype value 410 **/ 411 static void i40e_parse_cee_tlv(struct i40e_lldp_org_tlv *tlv, 412 struct i40e_dcbx_config *dcbcfg) 413 { 414 u16 len, tlvlen, sublen, typelength; 415 struct i40e_cee_feat_tlv *sub_tlv; 416 u8 subtype, feat_tlv_count = 0; 417 u32 ouisubtype; 418 419 ouisubtype = ntohl(tlv->ouisubtype); 420 subtype = (u8)((ouisubtype & I40E_LLDP_TLV_SUBTYPE_MASK) >> 421 I40E_LLDP_TLV_SUBTYPE_SHIFT); 422 /* Return if not CEE DCBX */ 423 if (subtype != I40E_CEE_DCBX_TYPE) 424 return; 425 426 typelength = ntohs(tlv->typelength); 427 tlvlen = (u16)((typelength & I40E_LLDP_TLV_LEN_MASK) >> 428 I40E_LLDP_TLV_LEN_SHIFT); 429 len = sizeof(tlv->typelength) + sizeof(ouisubtype) + 430 sizeof(struct i40e_cee_ctrl_tlv); 431 /* Return if no CEE DCBX Feature TLVs */ 432 if (tlvlen <= len) 433 return; 434 435 sub_tlv = (struct i40e_cee_feat_tlv *)((char *)tlv + len); 436 while (feat_tlv_count < I40E_CEE_MAX_FEAT_TYPE) { 437 typelength = ntohs(sub_tlv->hdr.typelen); 438 sublen = (u16)((typelength & 439 I40E_LLDP_TLV_LEN_MASK) >> 440 I40E_LLDP_TLV_LEN_SHIFT); 441 subtype = (u8)((typelength & I40E_LLDP_TLV_TYPE_MASK) >> 442 I40E_LLDP_TLV_TYPE_SHIFT); 443 switch (subtype) { 444 case I40E_CEE_SUBTYPE_PG_CFG: 445 i40e_parse_cee_pgcfg_tlv(sub_tlv, dcbcfg); 446 break; 447 case I40E_CEE_SUBTYPE_PFC_CFG: 448 i40e_parse_cee_pfccfg_tlv(sub_tlv, dcbcfg); 449 break; 450 case I40E_CEE_SUBTYPE_APP_PRI: 451 i40e_parse_cee_app_tlv(sub_tlv, dcbcfg); 452 break; 453 default: 454 return; /* Invalid Sub-type return */ 455 } 456 feat_tlv_count++; 457 /* Move to next sub TLV */ 458 sub_tlv = (struct i40e_cee_feat_tlv *)((char *)sub_tlv + 459 sizeof(sub_tlv->hdr.typelen) + 460 sublen); 461 } 462 } 463 464 /** 465 * i40e_parse_org_tlv 466 * @tlv: Organization specific TLV 467 * @dcbcfg: Local store to update ETS REC data 468 * 469 * Currently only IEEE 802.1Qaz TLV is supported, all others 470 * will be returned 471 **/ 472 static void i40e_parse_org_tlv(struct i40e_lldp_org_tlv *tlv, 473 struct i40e_dcbx_config *dcbcfg) 474 { 475 u32 ouisubtype; 476 u32 oui; 477 478 ouisubtype = ntohl(tlv->ouisubtype); 479 oui = (u32)((ouisubtype & I40E_LLDP_TLV_OUI_MASK) >> 480 I40E_LLDP_TLV_OUI_SHIFT); 481 switch (oui) { 482 case I40E_IEEE_8021QAZ_OUI: 483 i40e_parse_ieee_tlv(tlv, dcbcfg); 484 break; 485 case I40E_CEE_DCBX_OUI: 486 i40e_parse_cee_tlv(tlv, dcbcfg); 487 break; 488 default: 489 break; 490 } 491 } 492 493 /** 494 * i40e_lldp_to_dcb_config 495 * @lldpmib: LLDPDU to be parsed 496 * @dcbcfg: store for LLDPDU data 497 * 498 * Parse DCB configuration from the LLDPDU 499 **/ 500 i40e_status i40e_lldp_to_dcb_config(u8 *lldpmib, 501 struct i40e_dcbx_config *dcbcfg) 502 { 503 i40e_status ret = 0; 504 struct i40e_lldp_org_tlv *tlv; 505 u16 type; 506 u16 length; 507 u16 typelength; 508 u16 offset = 0; 509 510 if (!lldpmib || !dcbcfg) 511 return I40E_ERR_PARAM; 512 513 /* set to the start of LLDPDU */ 514 lldpmib += ETH_HLEN; 515 tlv = (struct i40e_lldp_org_tlv *)lldpmib; 516 while (1) { 517 typelength = ntohs(tlv->typelength); 518 type = (u16)((typelength & I40E_LLDP_TLV_TYPE_MASK) >> 519 I40E_LLDP_TLV_TYPE_SHIFT); 520 length = (u16)((typelength & I40E_LLDP_TLV_LEN_MASK) >> 521 I40E_LLDP_TLV_LEN_SHIFT); 522 offset += sizeof(typelength) + length; 523 524 /* END TLV or beyond LLDPDU size */ 525 if ((type == I40E_TLV_TYPE_END) || (offset > I40E_LLDPDU_SIZE)) 526 break; 527 528 switch (type) { 529 case I40E_TLV_TYPE_ORG: 530 i40e_parse_org_tlv(tlv, dcbcfg); 531 break; 532 default: 533 break; 534 } 535 536 /* Move to next TLV */ 537 tlv = (struct i40e_lldp_org_tlv *)((char *)tlv + 538 sizeof(tlv->typelength) + 539 length); 540 } 541 542 return ret; 543 } 544 545 /** 546 * i40e_aq_get_dcb_config 547 * @hw: pointer to the hw struct 548 * @mib_type: mib type for the query 549 * @bridgetype: bridge type for the query (remote) 550 * @dcbcfg: store for LLDPDU data 551 * 552 * Query DCB configuration from the Firmware 553 **/ 554 i40e_status i40e_aq_get_dcb_config(struct i40e_hw *hw, u8 mib_type, 555 u8 bridgetype, 556 struct i40e_dcbx_config *dcbcfg) 557 { 558 i40e_status ret = 0; 559 struct i40e_virt_mem mem; 560 u8 *lldpmib; 561 562 /* Allocate the LLDPDU */ 563 ret = i40e_allocate_virt_mem(hw, &mem, I40E_LLDPDU_SIZE); 564 if (ret) 565 return ret; 566 567 lldpmib = (u8 *)mem.va; 568 ret = i40e_aq_get_lldp_mib(hw, bridgetype, mib_type, 569 (void *)lldpmib, I40E_LLDPDU_SIZE, 570 NULL, NULL, NULL); 571 if (ret) 572 goto free_mem; 573 574 /* Parse LLDP MIB to get dcb configuration */ 575 ret = i40e_lldp_to_dcb_config(lldpmib, dcbcfg); 576 577 free_mem: 578 i40e_free_virt_mem(hw, &mem); 579 return ret; 580 } 581 582 /** 583 * i40e_cee_to_dcb_v1_config 584 * @cee_cfg: pointer to CEE v1 response configuration struct 585 * @dcbcfg: DCB configuration struct 586 * 587 * Convert CEE v1 configuration from firmware to DCB configuration 588 **/ 589 static void i40e_cee_to_dcb_v1_config( 590 struct i40e_aqc_get_cee_dcb_cfg_v1_resp *cee_cfg, 591 struct i40e_dcbx_config *dcbcfg) 592 { 593 u16 status, tlv_status = le16_to_cpu(cee_cfg->tlv_status); 594 u16 app_prio = le16_to_cpu(cee_cfg->oper_app_prio); 595 u8 i, tc, err; 596 597 /* CEE PG data to ETS config */ 598 dcbcfg->etscfg.maxtcs = cee_cfg->oper_num_tc; 599 600 /* Note that the FW creates the oper_prio_tc nibbles reversed 601 * from those in the CEE Priority Group sub-TLV. 602 */ 603 for (i = 0; i < 4; i++) { 604 tc = (u8)((cee_cfg->oper_prio_tc[i] & 605 I40E_CEE_PGID_PRIO_0_MASK) >> 606 I40E_CEE_PGID_PRIO_0_SHIFT); 607 dcbcfg->etscfg.prioritytable[i * 2] = tc; 608 tc = (u8)((cee_cfg->oper_prio_tc[i] & 609 I40E_CEE_PGID_PRIO_1_MASK) >> 610 I40E_CEE_PGID_PRIO_1_SHIFT); 611 dcbcfg->etscfg.prioritytable[i*2 + 1] = tc; 612 } 613 614 for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) 615 dcbcfg->etscfg.tcbwtable[i] = cee_cfg->oper_tc_bw[i]; 616 617 for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) { 618 if (dcbcfg->etscfg.prioritytable[i] == I40E_CEE_PGID_STRICT) { 619 /* Map it to next empty TC */ 620 dcbcfg->etscfg.prioritytable[i] = 621 cee_cfg->oper_num_tc - 1; 622 dcbcfg->etscfg.tsatable[i] = I40E_IEEE_TSA_STRICT; 623 } else { 624 dcbcfg->etscfg.tsatable[i] = I40E_IEEE_TSA_ETS; 625 } 626 } 627 628 /* CEE PFC data to ETS config */ 629 dcbcfg->pfc.pfcenable = cee_cfg->oper_pfc_en; 630 dcbcfg->pfc.pfccap = I40E_MAX_TRAFFIC_CLASS; 631 632 status = (tlv_status & I40E_AQC_CEE_APP_STATUS_MASK) >> 633 I40E_AQC_CEE_APP_STATUS_SHIFT; 634 err = (status & I40E_TLV_STATUS_ERR) ? 1 : 0; 635 /* Add APPs if Error is False */ 636 if (!err) { 637 /* CEE operating configuration supports FCoE/iSCSI/FIP only */ 638 dcbcfg->numapps = I40E_CEE_OPER_MAX_APPS; 639 640 /* FCoE APP */ 641 dcbcfg->app[0].priority = 642 (app_prio & I40E_AQC_CEE_APP_FCOE_MASK) >> 643 I40E_AQC_CEE_APP_FCOE_SHIFT; 644 dcbcfg->app[0].selector = I40E_APP_SEL_ETHTYPE; 645 dcbcfg->app[0].protocolid = I40E_APP_PROTOID_FCOE; 646 647 /* iSCSI APP */ 648 dcbcfg->app[1].priority = 649 (app_prio & I40E_AQC_CEE_APP_ISCSI_MASK) >> 650 I40E_AQC_CEE_APP_ISCSI_SHIFT; 651 dcbcfg->app[1].selector = I40E_APP_SEL_TCPIP; 652 dcbcfg->app[1].protocolid = I40E_APP_PROTOID_ISCSI; 653 654 /* FIP APP */ 655 dcbcfg->app[2].priority = 656 (app_prio & I40E_AQC_CEE_APP_FIP_MASK) >> 657 I40E_AQC_CEE_APP_FIP_SHIFT; 658 dcbcfg->app[2].selector = I40E_APP_SEL_ETHTYPE; 659 dcbcfg->app[2].protocolid = I40E_APP_PROTOID_FIP; 660 } 661 } 662 663 /** 664 * i40e_cee_to_dcb_config 665 * @cee_cfg: pointer to CEE configuration struct 666 * @dcbcfg: DCB configuration struct 667 * 668 * Convert CEE configuration from firmware to DCB configuration 669 **/ 670 static void i40e_cee_to_dcb_config( 671 struct i40e_aqc_get_cee_dcb_cfg_resp *cee_cfg, 672 struct i40e_dcbx_config *dcbcfg) 673 { 674 u32 status, tlv_status = le32_to_cpu(cee_cfg->tlv_status); 675 u16 app_prio = le16_to_cpu(cee_cfg->oper_app_prio); 676 u8 i, tc, err, sync, oper; 677 678 /* CEE PG data to ETS config */ 679 dcbcfg->etscfg.maxtcs = cee_cfg->oper_num_tc; 680 681 /* Note that the FW creates the oper_prio_tc nibbles reversed 682 * from those in the CEE Priority Group sub-TLV. 683 */ 684 for (i = 0; i < 4; i++) { 685 tc = (u8)((cee_cfg->oper_prio_tc[i] & 686 I40E_CEE_PGID_PRIO_0_MASK) >> 687 I40E_CEE_PGID_PRIO_0_SHIFT); 688 dcbcfg->etscfg.prioritytable[i * 2] = tc; 689 tc = (u8)((cee_cfg->oper_prio_tc[i] & 690 I40E_CEE_PGID_PRIO_1_MASK) >> 691 I40E_CEE_PGID_PRIO_1_SHIFT); 692 dcbcfg->etscfg.prioritytable[i * 2 + 1] = tc; 693 } 694 695 for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) 696 dcbcfg->etscfg.tcbwtable[i] = cee_cfg->oper_tc_bw[i]; 697 698 for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) { 699 if (dcbcfg->etscfg.prioritytable[i] == I40E_CEE_PGID_STRICT) { 700 /* Map it to next empty TC */ 701 dcbcfg->etscfg.prioritytable[i] = 702 cee_cfg->oper_num_tc - 1; 703 dcbcfg->etscfg.tsatable[i] = I40E_IEEE_TSA_STRICT; 704 } else { 705 dcbcfg->etscfg.tsatable[i] = I40E_IEEE_TSA_ETS; 706 } 707 } 708 709 /* CEE PFC data to ETS config */ 710 dcbcfg->pfc.pfcenable = cee_cfg->oper_pfc_en; 711 dcbcfg->pfc.pfccap = I40E_MAX_TRAFFIC_CLASS; 712 713 i = 0; 714 status = (tlv_status & I40E_AQC_CEE_FCOE_STATUS_MASK) >> 715 I40E_AQC_CEE_FCOE_STATUS_SHIFT; 716 err = (status & I40E_TLV_STATUS_ERR) ? 1 : 0; 717 sync = (status & I40E_TLV_STATUS_SYNC) ? 1 : 0; 718 oper = (status & I40E_TLV_STATUS_OPER) ? 1 : 0; 719 /* Add FCoE APP if Error is False and Oper/Sync is True */ 720 if (!err && sync && oper) { 721 /* FCoE APP */ 722 dcbcfg->app[i].priority = 723 (app_prio & I40E_AQC_CEE_APP_FCOE_MASK) >> 724 I40E_AQC_CEE_APP_FCOE_SHIFT; 725 dcbcfg->app[i].selector = I40E_APP_SEL_ETHTYPE; 726 dcbcfg->app[i].protocolid = I40E_APP_PROTOID_FCOE; 727 i++; 728 } 729 730 status = (tlv_status & I40E_AQC_CEE_ISCSI_STATUS_MASK) >> 731 I40E_AQC_CEE_ISCSI_STATUS_SHIFT; 732 err = (status & I40E_TLV_STATUS_ERR) ? 1 : 0; 733 sync = (status & I40E_TLV_STATUS_SYNC) ? 1 : 0; 734 oper = (status & I40E_TLV_STATUS_OPER) ? 1 : 0; 735 /* Add iSCSI APP if Error is False and Oper/Sync is True */ 736 if (!err && sync && oper) { 737 /* iSCSI APP */ 738 dcbcfg->app[i].priority = 739 (app_prio & I40E_AQC_CEE_APP_ISCSI_MASK) >> 740 I40E_AQC_CEE_APP_ISCSI_SHIFT; 741 dcbcfg->app[i].selector = I40E_APP_SEL_TCPIP; 742 dcbcfg->app[i].protocolid = I40E_APP_PROTOID_ISCSI; 743 i++; 744 } 745 746 status = (tlv_status & I40E_AQC_CEE_FIP_STATUS_MASK) >> 747 I40E_AQC_CEE_FIP_STATUS_SHIFT; 748 err = (status & I40E_TLV_STATUS_ERR) ? 1 : 0; 749 sync = (status & I40E_TLV_STATUS_SYNC) ? 1 : 0; 750 oper = (status & I40E_TLV_STATUS_OPER) ? 1 : 0; 751 /* Add FIP APP if Error is False and Oper/Sync is True */ 752 if (!err && sync && oper) { 753 /* FIP APP */ 754 dcbcfg->app[i].priority = 755 (app_prio & I40E_AQC_CEE_APP_FIP_MASK) >> 756 I40E_AQC_CEE_APP_FIP_SHIFT; 757 dcbcfg->app[i].selector = I40E_APP_SEL_ETHTYPE; 758 dcbcfg->app[i].protocolid = I40E_APP_PROTOID_FIP; 759 i++; 760 } 761 dcbcfg->numapps = i; 762 } 763 764 /** 765 * i40e_get_ieee_dcb_config 766 * @hw: pointer to the hw struct 767 * 768 * Get IEEE mode DCB configuration from the Firmware 769 **/ 770 static i40e_status i40e_get_ieee_dcb_config(struct i40e_hw *hw) 771 { 772 i40e_status ret = 0; 773 774 /* IEEE mode */ 775 hw->local_dcbx_config.dcbx_mode = I40E_DCBX_MODE_IEEE; 776 /* Get Local DCB Config */ 777 ret = i40e_aq_get_dcb_config(hw, I40E_AQ_LLDP_MIB_LOCAL, 0, 778 &hw->local_dcbx_config); 779 if (ret) 780 goto out; 781 782 /* Get Remote DCB Config */ 783 ret = i40e_aq_get_dcb_config(hw, I40E_AQ_LLDP_MIB_REMOTE, 784 I40E_AQ_LLDP_BRIDGE_TYPE_NEAREST_BRIDGE, 785 &hw->remote_dcbx_config); 786 /* Don't treat ENOENT as an error for Remote MIBs */ 787 if (hw->aq.asq_last_status == I40E_AQ_RC_ENOENT) 788 ret = 0; 789 790 out: 791 return ret; 792 } 793 794 /** 795 * i40e_get_dcb_config 796 * @hw: pointer to the hw struct 797 * 798 * Get DCB configuration from the Firmware 799 **/ 800 i40e_status i40e_get_dcb_config(struct i40e_hw *hw) 801 { 802 i40e_status ret = 0; 803 struct i40e_aqc_get_cee_dcb_cfg_resp cee_cfg; 804 struct i40e_aqc_get_cee_dcb_cfg_v1_resp cee_v1_cfg; 805 806 /* If Firmware version < v4.33 on X710/XL710, IEEE only */ 807 if ((hw->mac.type == I40E_MAC_XL710) && 808 (((hw->aq.fw_maj_ver == 4) && (hw->aq.fw_min_ver < 33)) || 809 (hw->aq.fw_maj_ver < 4))) 810 return i40e_get_ieee_dcb_config(hw); 811 812 /* If Firmware version == v4.33 on X710/XL710, use old CEE struct */ 813 if ((hw->mac.type == I40E_MAC_XL710) && 814 ((hw->aq.fw_maj_ver == 4) && (hw->aq.fw_min_ver == 33))) { 815 ret = i40e_aq_get_cee_dcb_config(hw, &cee_v1_cfg, 816 sizeof(cee_v1_cfg), NULL); 817 if (!ret) { 818 /* CEE mode */ 819 hw->local_dcbx_config.dcbx_mode = I40E_DCBX_MODE_CEE; 820 hw->local_dcbx_config.tlv_status = 821 le16_to_cpu(cee_v1_cfg.tlv_status); 822 i40e_cee_to_dcb_v1_config(&cee_v1_cfg, 823 &hw->local_dcbx_config); 824 } 825 } else { 826 ret = i40e_aq_get_cee_dcb_config(hw, &cee_cfg, 827 sizeof(cee_cfg), NULL); 828 if (!ret) { 829 /* CEE mode */ 830 hw->local_dcbx_config.dcbx_mode = I40E_DCBX_MODE_CEE; 831 hw->local_dcbx_config.tlv_status = 832 le32_to_cpu(cee_cfg.tlv_status); 833 i40e_cee_to_dcb_config(&cee_cfg, 834 &hw->local_dcbx_config); 835 } 836 } 837 838 /* CEE mode not enabled try querying IEEE data */ 839 if (hw->aq.asq_last_status == I40E_AQ_RC_ENOENT) 840 return i40e_get_ieee_dcb_config(hw); 841 842 if (ret) 843 goto out; 844 845 /* Get CEE DCB Desired Config */ 846 ret = i40e_aq_get_dcb_config(hw, I40E_AQ_LLDP_MIB_LOCAL, 0, 847 &hw->desired_dcbx_config); 848 if (ret) 849 goto out; 850 851 /* Get Remote DCB Config */ 852 ret = i40e_aq_get_dcb_config(hw, I40E_AQ_LLDP_MIB_REMOTE, 853 I40E_AQ_LLDP_BRIDGE_TYPE_NEAREST_BRIDGE, 854 &hw->remote_dcbx_config); 855 /* Don't treat ENOENT as an error for Remote MIBs */ 856 if (hw->aq.asq_last_status == I40E_AQ_RC_ENOENT) 857 ret = 0; 858 859 out: 860 return ret; 861 } 862 863 /** 864 * i40e_init_dcb 865 * @hw: pointer to the hw struct 866 * @enable_mib_change: enable mib change event 867 * 868 * Update DCB configuration from the Firmware 869 **/ 870 i40e_status i40e_init_dcb(struct i40e_hw *hw, bool enable_mib_change) 871 { 872 i40e_status ret = 0; 873 struct i40e_lldp_variables lldp_cfg; 874 u8 adminstatus = 0; 875 876 if (!hw->func_caps.dcb) 877 return I40E_NOT_SUPPORTED; 878 879 /* Read LLDP NVM area */ 880 if (hw->flags & I40E_HW_FLAG_FW_LLDP_PERSISTENT) { 881 u8 offset = 0; 882 883 if (hw->mac.type == I40E_MAC_XL710) 884 offset = I40E_LLDP_CURRENT_STATUS_XL710_OFFSET; 885 else if (hw->mac.type == I40E_MAC_X722) 886 offset = I40E_LLDP_CURRENT_STATUS_X722_OFFSET; 887 else 888 return I40E_NOT_SUPPORTED; 889 890 ret = i40e_read_nvm_module_data(hw, 891 I40E_SR_EMP_SR_SETTINGS_PTR, 892 offset, 893 I40E_LLDP_CURRENT_STATUS_OFFSET, 894 I40E_LLDP_CURRENT_STATUS_SIZE, 895 &lldp_cfg.adminstatus); 896 } else { 897 ret = i40e_read_lldp_cfg(hw, &lldp_cfg); 898 } 899 if (ret) 900 return I40E_ERR_NOT_READY; 901 902 /* Get the LLDP AdminStatus for the current port */ 903 adminstatus = lldp_cfg.adminstatus >> (hw->port * 4); 904 adminstatus &= 0xF; 905 906 /* LLDP agent disabled */ 907 if (!adminstatus) { 908 hw->dcbx_status = I40E_DCBX_STATUS_DISABLED; 909 return I40E_ERR_NOT_READY; 910 } 911 912 /* Get DCBX status */ 913 ret = i40e_get_dcbx_status(hw, &hw->dcbx_status); 914 if (ret) 915 return ret; 916 917 /* Check the DCBX Status */ 918 if (hw->dcbx_status == I40E_DCBX_STATUS_DONE || 919 hw->dcbx_status == I40E_DCBX_STATUS_IN_PROGRESS) { 920 /* Get current DCBX configuration */ 921 ret = i40e_get_dcb_config(hw); 922 if (ret) 923 return ret; 924 } else if (hw->dcbx_status == I40E_DCBX_STATUS_DISABLED) { 925 return I40E_ERR_NOT_READY; 926 } 927 928 /* Configure the LLDP MIB change event */ 929 if (enable_mib_change) 930 ret = i40e_aq_cfg_lldp_mib_change_event(hw, true, NULL); 931 932 return ret; 933 } 934 935 /** 936 * _i40e_read_lldp_cfg - generic read of LLDP Configuration data from NVM 937 * @hw: pointer to the HW structure 938 * @lldp_cfg: pointer to hold lldp configuration variables 939 * @module: address of the module pointer 940 * @word_offset: offset of LLDP configuration 941 * 942 * Reads the LLDP configuration data from NVM using passed addresses 943 **/ 944 static i40e_status _i40e_read_lldp_cfg(struct i40e_hw *hw, 945 struct i40e_lldp_variables *lldp_cfg, 946 u8 module, u32 word_offset) 947 { 948 u32 address, offset = (2 * word_offset); 949 i40e_status ret; 950 __le16 raw_mem; 951 u16 mem; 952 953 ret = i40e_acquire_nvm(hw, I40E_RESOURCE_READ); 954 if (ret) 955 return ret; 956 957 ret = i40e_aq_read_nvm(hw, 0x0, module * 2, sizeof(raw_mem), &raw_mem, 958 true, NULL); 959 i40e_release_nvm(hw); 960 if (ret) 961 return ret; 962 963 mem = le16_to_cpu(raw_mem); 964 /* Check if this pointer needs to be read in word size or 4K sector 965 * units. 966 */ 967 if (mem & I40E_PTR_TYPE) 968 address = (0x7FFF & mem) * 4096; 969 else 970 address = (0x7FFF & mem) * 2; 971 972 ret = i40e_acquire_nvm(hw, I40E_RESOURCE_READ); 973 if (ret) 974 goto err_lldp_cfg; 975 976 ret = i40e_aq_read_nvm(hw, module, offset, sizeof(raw_mem), &raw_mem, 977 true, NULL); 978 i40e_release_nvm(hw); 979 if (ret) 980 return ret; 981 982 mem = le16_to_cpu(raw_mem); 983 offset = mem + word_offset; 984 offset *= 2; 985 986 ret = i40e_acquire_nvm(hw, I40E_RESOURCE_READ); 987 if (ret) 988 goto err_lldp_cfg; 989 990 ret = i40e_aq_read_nvm(hw, 0, address + offset, 991 sizeof(struct i40e_lldp_variables), lldp_cfg, 992 true, NULL); 993 i40e_release_nvm(hw); 994 995 err_lldp_cfg: 996 return ret; 997 } 998 999 /** 1000 * i40e_read_lldp_cfg - read LLDP Configuration data from NVM 1001 * @hw: pointer to the HW structure 1002 * @lldp_cfg: pointer to hold lldp configuration variables 1003 * 1004 * Reads the LLDP configuration data from NVM 1005 **/ 1006 i40e_status i40e_read_lldp_cfg(struct i40e_hw *hw, 1007 struct i40e_lldp_variables *lldp_cfg) 1008 { 1009 i40e_status ret = 0; 1010 u32 mem; 1011 1012 if (!lldp_cfg) 1013 return I40E_ERR_PARAM; 1014 1015 ret = i40e_acquire_nvm(hw, I40E_RESOURCE_READ); 1016 if (ret) 1017 return ret; 1018 1019 ret = i40e_aq_read_nvm(hw, I40E_SR_NVM_CONTROL_WORD, 0, sizeof(mem), 1020 &mem, true, NULL); 1021 i40e_release_nvm(hw); 1022 if (ret) 1023 return ret; 1024 1025 /* Read a bit that holds information whether we are running flat or 1026 * structured NVM image. Flat image has LLDP configuration in shadow 1027 * ram, so there is a need to pass different addresses for both cases. 1028 */ 1029 if (mem & I40E_SR_NVM_MAP_STRUCTURE_TYPE) { 1030 /* Flat NVM case */ 1031 ret = _i40e_read_lldp_cfg(hw, lldp_cfg, I40E_SR_EMP_MODULE_PTR, 1032 I40E_SR_LLDP_CFG_PTR); 1033 } else { 1034 /* Good old structured NVM image */ 1035 ret = _i40e_read_lldp_cfg(hw, lldp_cfg, I40E_EMP_MODULE_PTR, 1036 I40E_NVM_LLDP_CFG_PTR); 1037 } 1038 1039 return ret; 1040 } 1041