drivers/net/ethernet/stmicro/stmmac/stmmac_tc.c

   1 // SPDX-License-Identifier: (GPL-2.0 OR MIT)
   2 /*
   3  * Copyright (c) 2018 Synopsys, Inc. and/or its affiliates.
   4  * stmmac TC Handling (HW only)
   5  */
   6
   7 #include <net/pkt_cls.h>
   8 #include <net/tc_act/tc_gact.h>
   9 #include "common.h"
  10 #include "dwmac4.h"
  11 #include "dwmac5.h"
  12 #include "stmmac.h"
  13
  14 static void tc_fill_all_pass_entry(struct stmmac_tc_entry *entry)
  15 {
  16         memset(entry, 0, sizeof(*entry));
  17         entry->in_use = true;
  18         entry->is_last = true;
  19         entry->is_frag = false;
  20         entry->prio = ~0x0;
  21         entry->handle = 0;
  22         entry->val.match_data = 0x0;
  23         entry->val.match_en = 0x0;
  24         entry->val.af = 1;
  25         entry->val.dma_ch_no = 0x0;
  26 }
  27
  28 static struct stmmac_tc_entry *tc_find_entry(struct stmmac_priv *priv,
  29                                              struct tc_cls_u32_offload *cls,
  30                                              bool free)
  31 {
  32         struct stmmac_tc_entry *entry, *first = NULL, *dup = NULL;
  33         u32 loc = cls->knode.handle;
  34         int i;
  35
  36         for (i = 0; i < priv->tc_entries_max; i++) {
  37                 entry = &priv->tc_entries[i];
  38                 if (!entry->in_use && !first && free)
  39                         first = entry;
  40                 if ((entry->handle == loc) && !free && !entry->is_frag)
  41                         dup = entry;
  42         }
  43
  44         if (dup)
  45                 return dup;
  46         if (first) {
  47                 first->handle = loc;
  48                 first->in_use = true;
  49
  50                 /* Reset HW values */
  51                 memset(&first->val, 0, sizeof(first->val));
  52         }
  53
  54         return first;
  55 }
  56
  57 static int tc_fill_actions(struct stmmac_tc_entry *entry,
  58                            struct stmmac_tc_entry *frag,
  59                            struct tc_cls_u32_offload *cls)
  60 {
  61         struct stmmac_tc_entry *action_entry = entry;
  62         const struct tc_action *act;
  63         struct tcf_exts *exts;
  64         int i;
  65
  66         exts = cls->knode.exts;
  67         if (!tcf_exts_has_actions(exts))
  68                 return -EINVAL;
  69         if (frag)
  70                 action_entry = frag;
  71
  72         tcf_exts_for_each_action(i, act, exts) {
  73                 /* Accept */
  74                 if (is_tcf_gact_ok(act)) {
  75                         action_entry->val.af = 1;
  76                         break;
  77                 }
  78                 /* Drop */
  79                 if (is_tcf_gact_shot(act)) {
  80                         action_entry->val.rf = 1;
  81                         break;
  82                 }
  83
  84                 /* Unsupported */
  85                 return -EINVAL;
  86         }
  87
  88         return 0;
  89 }
  90
  91 static int tc_fill_entry(struct stmmac_priv *priv,
  92                          struct tc_cls_u32_offload *cls)
  93 {
  94         struct stmmac_tc_entry *entry, *frag = NULL;
  95         struct tc_u32_sel *sel = cls->knode.sel;
  96         u32 off, data, mask, real_off, rem;
  97         u32 prio = cls->common.prio << 16;
  98         int ret;
  99
 100         /* Only 1 match per entry */
 101         if (sel->nkeys <= 0 || sel->nkeys > 1)
 102                 return -EINVAL;
 103
 104         off = sel->keys[0].off << sel->offshift;
 105         data = sel->keys[0].val;
 106         mask = sel->keys[0].mask;
 107
 108         switch (ntohs(cls->common.protocol)) {
 109         case ETH_P_ALL:
 110                 break;
 111         case ETH_P_IP:
 112                 off += ETH_HLEN;
 113                 break;
 114         default:
 115                 return -EINVAL;
 116         }
 117
 118         if (off > priv->tc_off_max)
 119                 return -EINVAL;
 120
 121         real_off = off / 4;
 122         rem = off % 4;
 123
 124         entry = tc_find_entry(priv, cls, true);
 125         if (!entry)
 126                 return -EINVAL;
 127
 128         if (rem) {
 129                 frag = tc_find_entry(priv, cls, true);
 130                 if (!frag) {
 131                         ret = -EINVAL;
 132                         goto err_unuse;
 133                 }
 134
 135                 entry->frag_ptr = frag;
 136                 entry->val.match_en = (mask << (rem * 8)) &
 137                         GENMASK(31, rem * 8);
 138                 entry->val.match_data = (data << (rem * 8)) &
 139                         GENMASK(31, rem * 8);
 140                 entry->val.frame_offset = real_off;
 141                 entry->prio = prio;
 142
 143                 frag->val.match_en = (mask >> (rem * 8)) &
 144                         GENMASK(rem * 8 - 1, 0);
 145                 frag->val.match_data = (data >> (rem * 8)) &
 146                         GENMASK(rem * 8 - 1, 0);
 147                 frag->val.frame_offset = real_off + 1;
 148                 frag->prio = prio;
 149                 frag->is_frag = true;
 150         } else {
 151                 entry->frag_ptr = NULL;
 152                 entry->val.match_en = mask;
 153                 entry->val.match_data = data;
 154                 entry->val.frame_offset = real_off;
 155                 entry->prio = prio;
 156         }
 157
 158         ret = tc_fill_actions(entry, frag, cls);
 159         if (ret)
 160                 goto err_unuse;
 161
 162         return 0;
 163
 164 err_unuse:
 165         if (frag)
 166                 frag->in_use = false;
 167         entry->in_use = false;
 168         return ret;
 169 }
 170
 171 static void tc_unfill_entry(struct stmmac_priv *priv,
 172                             struct tc_cls_u32_offload *cls)
 173 {
 174         struct stmmac_tc_entry *entry;
 175
 176         entry = tc_find_entry(priv, cls, false);
 177         if (!entry)
 178                 return;
 179
 180         entry->in_use = false;
 181         if (entry->frag_ptr) {
 182                 entry = entry->frag_ptr;
 183                 entry->is_frag = false;
 184                 entry->in_use = false;
 185         }
 186 }
 187
 188 static int tc_config_knode(struct stmmac_priv *priv,
 189                            struct tc_cls_u32_offload *cls)
 190 {
 191         int ret;
 192
 193         ret = tc_fill_entry(priv, cls);
 194         if (ret)
 195                 return ret;
 196
 197         ret = stmmac_rxp_config(priv, priv->hw->pcsr, priv->tc_entries,
 198                         priv->tc_entries_max);
 199         if (ret)
 200                 goto err_unfill;
 201
 202         return 0;
 203
 204 err_unfill:
 205         tc_unfill_entry(priv, cls);
 206         return ret;
 207 }
 208
 209 static int tc_delete_knode(struct stmmac_priv *priv,
 210                            struct tc_cls_u32_offload *cls)
 211 {
 212         /* Set entry and fragments as not used */
 213         tc_unfill_entry(priv, cls);
 214
 215         return stmmac_rxp_config(priv, priv->hw->pcsr, priv->tc_entries,
 216                                  priv->tc_entries_max);
 217 }
 218
 219 static int tc_setup_cls_u32(struct stmmac_priv *priv,
 220                             struct tc_cls_u32_offload *cls)
 221 {
 222         switch (cls->command) {
 223         case TC_CLSU32_REPLACE_KNODE:
 224                 tc_unfill_entry(priv, cls);
 225                 fallthrough;
 226         case TC_CLSU32_NEW_KNODE:
 227                 return tc_config_knode(priv, cls);
 228         case TC_CLSU32_DELETE_KNODE:
 229                 return tc_delete_knode(priv, cls);
 230         default:
 231                 return -EOPNOTSUPP;
 232         }
 233 }
 234
 235 static int tc_init(struct stmmac_priv *priv)
 236 {
 237         struct dma_features *dma_cap = &priv->dma_cap;
 238         unsigned int count;
 239         int i;
 240
 241         if (dma_cap->l3l4fnum) {
 242                 priv->flow_entries_max = dma_cap->l3l4fnum;
 243                 priv->flow_entries = devm_kcalloc(priv->device,
 244                                                   dma_cap->l3l4fnum,
 245                                                   sizeof(*priv->flow_entries),
 246                                                   GFP_KERNEL);
 247                 if (!priv->flow_entries)
 248                         return -ENOMEM;
 249
 250                 for (i = 0; i < priv->flow_entries_max; i++)
 251                         priv->flow_entries[i].idx = i;
 252
 253                 dev_info(priv->device, "Enabled Flow TC (entries=%d)\n",
 254                          priv->flow_entries_max);
 255         }
 256
 257         /* Fail silently as we can still use remaining features, e.g. CBS */
 258         if (!dma_cap->frpsel)
 259                 return 0;
 260
 261         switch (dma_cap->frpbs) {
 262         case 0x0:
 263                 priv->tc_off_max = 64;
 264                 break;
 265         case 0x1:
 266                 priv->tc_off_max = 128;
 267                 break;
 268         case 0x2:
 269                 priv->tc_off_max = 256;
 270                 break;
 271         default:
 272                 return -EINVAL;
 273         }
 274
 275         switch (dma_cap->frpes) {
 276         case 0x0:
 277                 count = 64;
 278                 break;
 279         case 0x1:
 280                 count = 128;
 281                 break;
 282         case 0x2:
 283                 count = 256;
 284                 break;
 285         default:
 286                 return -EINVAL;
 287         }
 288
 289         /* Reserve one last filter which lets all pass */
 290         priv->tc_entries_max = count;
 291         priv->tc_entries = devm_kcalloc(priv->device,
 292                         count, sizeof(*priv->tc_entries), GFP_KERNEL);
 293         if (!priv->tc_entries)
 294                 return -ENOMEM;
 295
 296         tc_fill_all_pass_entry(&priv->tc_entries[count - 1]);
 297
 298         dev_info(priv->device, "Enabling HW TC (entries=%d, max_off=%d)\n",
 299                         priv->tc_entries_max, priv->tc_off_max);
 300         return 0;
 301 }
 302
 303 static int tc_setup_cbs(struct stmmac_priv *priv,
 304                         struct tc_cbs_qopt_offload *qopt)
 305 {
 306         u32 tx_queues_count = priv->plat->tx_queues_to_use;
 307         u32 queue = qopt->queue;
 308         u32 ptr, speed_div;
 309         u32 mode_to_use;
 310         u64 value;
 311         int ret;
 312
 313         /* Queue 0 is not AVB capable */
 314         if (queue <= 0 || queue >= tx_queues_count)
 315                 return -EINVAL;
 316         if (!priv->dma_cap.av)
 317                 return -EOPNOTSUPP;
 318
 319         /* Port Transmit Rate and Speed Divider */
 320         switch (priv->speed) {
 321         case SPEED_10000:
 322                 ptr = 32;
 323                 speed_div = 10000000;
 324                 break;
 325         case SPEED_5000:
 326                 ptr = 32;
 327                 speed_div = 5000000;
 328                 break;
 329         case SPEED_2500:
 330                 ptr = 8;
 331                 speed_div = 2500000;
 332                 break;
 333         case SPEED_1000:
 334                 ptr = 8;
 335                 speed_div = 1000000;
 336                 break;
 337         case SPEED_100:
 338                 ptr = 4;
 339                 speed_div = 100000;
 340                 break;
 341         default:
 342                 return -EOPNOTSUPP;
 343         }
 344
 345         mode_to_use = priv->plat->tx_queues_cfg[queue].mode_to_use;
 346         if (mode_to_use == MTL_QUEUE_DCB && qopt->enable) {
 347                 ret = stmmac_dma_qmode(priv, priv->ioaddr, queue, MTL_QUEUE_AVB);
 348                 if (ret)
 349                         return ret;
 350
 351                 priv->plat->tx_queues_cfg[queue].mode_to_use = MTL_QUEUE_AVB;
 352         } else if (!qopt->enable) {
 353                 ret = stmmac_dma_qmode(priv, priv->ioaddr, queue,
 354                                        MTL_QUEUE_DCB);
 355                 if (ret)
 356                         return ret;
 357
 358                 priv->plat->tx_queues_cfg[queue].mode_to_use = MTL_QUEUE_DCB;
 359         }
 360
 361         /* Final adjustments for HW */
 362         value = div_s64(qopt->idleslope * 1024ll * ptr, speed_div);
 363         priv->plat->tx_queues_cfg[queue].idle_slope = value & GENMASK(31, 0);
 364
 365         value = div_s64(-qopt->sendslope * 1024ll * ptr, speed_div);
 366         priv->plat->tx_queues_cfg[queue].send_slope = value & GENMASK(31, 0);
 367
 368         value = qopt->hicredit * 1024ll * 8;
 369         priv->plat->tx_queues_cfg[queue].high_credit = value & GENMASK(31, 0);
 370
 371         value = qopt->locredit * 1024ll * 8;
 372         priv->plat->tx_queues_cfg[queue].low_credit = value & GENMASK(31, 0);
 373
 374         ret = stmmac_config_cbs(priv, priv->hw,
 375                                 priv->plat->tx_queues_cfg[queue].send_slope,
 376                                 priv->plat->tx_queues_cfg[queue].idle_slope,
 377                                 priv->plat->tx_queues_cfg[queue].high_credit,
 378                                 priv->plat->tx_queues_cfg[queue].low_credit,
 379                                 queue);
 380         if (ret)
 381                 return ret;
 382
 383         dev_info(priv->device, "CBS queue %d: send %d, idle %d, hi %d, lo %d\n",
 384                         queue, qopt->sendslope, qopt->idleslope,
 385                         qopt->hicredit, qopt->locredit);
 386         return 0;
 387 }
 388
 389 static int tc_parse_flow_actions(struct stmmac_priv *priv,
 390                                  struct flow_action *action,
 391                                  struct stmmac_flow_entry *entry,
 392                                  struct netlink_ext_ack *extack)
 393 {
 394         struct flow_action_entry *act;
 395         int i;
 396
 397         if (!flow_action_has_entries(action))
 398                 return -EINVAL;
 399
 400         if (!flow_action_basic_hw_stats_check(action, extack))
 401                 return -EOPNOTSUPP;
 402
 403         flow_action_for_each(i, act, action) {
 404                 switch (act->id) {
 405                 case FLOW_ACTION_DROP:
 406                         entry->action |= STMMAC_FLOW_ACTION_DROP;
 407                         return 0;
 408                 default:
 409                         break;
 410                 }
 411         }
 412
 413         /* Nothing to do, maybe inverse filter ? */
 414         return 0;
 415 }
 416
 417 static int tc_add_basic_flow(struct stmmac_priv *priv,
 418                              struct flow_cls_offload *cls,
 419                              struct stmmac_flow_entry *entry)
 420 {
 421         struct flow_rule *rule = flow_cls_offload_flow_rule(cls);
 422         struct flow_dissector *dissector = rule->match.dissector;
 423         struct flow_match_basic match;
 424
 425         /* Nothing to do here */
 426         if (!dissector_uses_key(dissector, FLOW_DISSECTOR_KEY_BASIC))
 427                 return -EINVAL;
 428
 429         flow_rule_match_basic(rule, &match);
 430         entry->ip_proto = match.key->ip_proto;
 431         return 0;
 432 }
 433
 434 static int tc_add_ip4_flow(struct stmmac_priv *priv,
 435                            struct flow_cls_offload *cls,
 436                            struct stmmac_flow_entry *entry)
 437 {
 438         struct flow_rule *rule = flow_cls_offload_flow_rule(cls);
 439         struct flow_dissector *dissector = rule->match.dissector;
 440         bool inv = entry->action & STMMAC_FLOW_ACTION_DROP;
 441         struct flow_match_ipv4_addrs match;
 442         u32 hw_match;
 443         int ret;
 444
 445         /* Nothing to do here */
 446         if (!dissector_uses_key(dissector, FLOW_DISSECTOR_KEY_IPV4_ADDRS))
 447                 return -EINVAL;
 448
 449         flow_rule_match_ipv4_addrs(rule, &match);
 450         hw_match = ntohl(match.key->src) & ntohl(match.mask->src);
 451         if (hw_match) {
 452                 ret = stmmac_config_l3_filter(priv, priv->hw, entry->idx, true,
 453                                               false, true, inv, hw_match);
 454                 if (ret)
 455                         return ret;
 456         }
 457
 458         hw_match = ntohl(match.key->dst) & ntohl(match.mask->dst);
 459         if (hw_match) {
 460                 ret = stmmac_config_l3_filter(priv, priv->hw, entry->idx, true,
 461                                               false, false, inv, hw_match);
 462                 if (ret)
 463                         return ret;
 464         }
 465
 466         return 0;
 467 }
 468
 469 static int tc_add_ports_flow(struct stmmac_priv *priv,
 470                              struct flow_cls_offload *cls,
 471                              struct stmmac_flow_entry *entry)
 472 {
 473         struct flow_rule *rule = flow_cls_offload_flow_rule(cls);
 474         struct flow_dissector *dissector = rule->match.dissector;
 475         bool inv = entry->action & STMMAC_FLOW_ACTION_DROP;
 476         struct flow_match_ports match;
 477         u32 hw_match;
 478         bool is_udp;
 479         int ret;
 480
 481         /* Nothing to do here */
 482         if (!dissector_uses_key(dissector, FLOW_DISSECTOR_KEY_PORTS))
 483                 return -EINVAL;
 484
 485         switch (entry->ip_proto) {
 486         case IPPROTO_TCP:
 487                 is_udp = false;
 488                 break;
 489         case IPPROTO_UDP:
 490                 is_udp = true;
 491                 break;
 492         default:
 493                 return -EINVAL;
 494         }
 495
 496         flow_rule_match_ports(rule, &match);
 497
 498         hw_match = ntohs(match.key->src) & ntohs(match.mask->src);
 499         if (hw_match) {
 500                 ret = stmmac_config_l4_filter(priv, priv->hw, entry->idx, true,
 501                                               is_udp, true, inv, hw_match);
 502                 if (ret)
 503                         return ret;
 504         }
 505
 506         hw_match = ntohs(match.key->dst) & ntohs(match.mask->dst);
 507         if (hw_match) {
 508                 ret = stmmac_config_l4_filter(priv, priv->hw, entry->idx, true,
 509                                               is_udp, false, inv, hw_match);
 510                 if (ret)
 511                         return ret;
 512         }
 513
 514         entry->is_l4 = true;
 515         return 0;
 516 }
 517
 518 static struct stmmac_flow_entry *tc_find_flow(struct stmmac_priv *priv,
 519                                               struct flow_cls_offload *cls,
 520                                               bool get_free)
 521 {
 522         int i;
 523
 524         for (i = 0; i < priv->flow_entries_max; i++) {
 525                 struct stmmac_flow_entry *entry = &priv->flow_entries[i];
 526
 527                 if (entry->cookie == cls->cookie)
 528                         return entry;
 529                 if (get_free && (entry->in_use == false))
 530                         return entry;
 531         }
 532
 533         return NULL;
 534 }
 535
 536 static struct {
 537         int (*fn)(struct stmmac_priv *priv, struct flow_cls_offload *cls,
 538                   struct stmmac_flow_entry *entry);
 539 } tc_flow_parsers[] = {
 540         { .fn = tc_add_basic_flow },
 541         { .fn = tc_add_ip4_flow },
 542         { .fn = tc_add_ports_flow },
 543 };
 544
 545 static int tc_add_flow(struct stmmac_priv *priv,
 546                        struct flow_cls_offload *cls)
 547 {
 548         struct stmmac_flow_entry *entry = tc_find_flow(priv, cls, false);
 549         struct flow_rule *rule = flow_cls_offload_flow_rule(cls);
 550         int i, ret;
 551
 552         if (!entry) {
 553                 entry = tc_find_flow(priv, cls, true);
 554                 if (!entry)
 555                         return -ENOENT;
 556         }
 557
 558         ret = tc_parse_flow_actions(priv, &rule->action, entry,
 559                                     cls->common.extack);
 560         if (ret)
 561                 return ret;
 562
 563         for (i = 0; i < ARRAY_SIZE(tc_flow_parsers); i++) {
 564                 ret = tc_flow_parsers[i].fn(priv, cls, entry);
 565                 if (!ret) {
 566                         entry->in_use = true;
 567                         continue;
 568                 }
 569         }
 570
 571         if (!entry->in_use)
 572                 return -EINVAL;
 573
 574         entry->cookie = cls->cookie;
 575         return 0;
 576 }
 577
 578 static int tc_del_flow(struct stmmac_priv *priv,
 579                        struct flow_cls_offload *cls)
 580 {
 581         struct stmmac_flow_entry *entry = tc_find_flow(priv, cls, false);
 582         int ret;
 583
 584         if (!entry || !entry->in_use)
 585                 return -ENOENT;
 586
 587         if (entry->is_l4) {
 588                 ret = stmmac_config_l4_filter(priv, priv->hw, entry->idx, false,
 589                                               false, false, false, 0);
 590         } else {
 591                 ret = stmmac_config_l3_filter(priv, priv->hw, entry->idx, false,
 592                                               false, false, false, 0);
 593         }
 594
 595         entry->in_use = false;
 596         entry->cookie = 0;
 597         entry->is_l4 = false;
 598         return ret;
 599 }
 600
 601 static int tc_setup_cls(struct stmmac_priv *priv,
 602                         struct flow_cls_offload *cls)
 603 {
 604         int ret = 0;
 605
 606         /* When RSS is enabled, the filtering will be bypassed */
 607         if (priv->rss.enable)
 608                 return -EBUSY;
 609
 610         switch (cls->command) {
 611         case FLOW_CLS_REPLACE:
 612                 ret = tc_add_flow(priv, cls);
 613                 break;
 614         case FLOW_CLS_DESTROY:
 615                 ret = tc_del_flow(priv, cls);
 616                 break;
 617         default:
 618                 return -EOPNOTSUPP;
 619         }
 620
 621         return ret;
 622 }
 623
 624 static int tc_setup_taprio(struct stmmac_priv *priv,
 625                            struct tc_taprio_qopt_offload *qopt)
 626 {
 627         u32 size, wid = priv->dma_cap.estwid, dep = priv->dma_cap.estdep;
 628         struct plat_stmmacenet_data *plat = priv->plat;
 629         struct timespec64 time, current_time;
 630         ktime_t current_time_ns;
 631         bool fpe = false;
 632         int i, ret = 0;
 633         u64 ctr;
 634
 635         if (!priv->dma_cap.estsel)
 636                 return -EOPNOTSUPP;
 637
 638         switch (wid) {
 639         case 0x1:
 640                 wid = 16;
 641                 break;
 642         case 0x2:
 643                 wid = 20;
 644                 break;
 645         case 0x3:
 646                 wid = 24;
 647                 break;
 648         default:
 649                 return -EOPNOTSUPP;
 650         }
 651
 652         switch (dep) {
 653         case 0x1:
 654                 dep = 64;
 655                 break;
 656         case 0x2:
 657                 dep = 128;
 658                 break;
 659         case 0x3:
 660                 dep = 256;
 661                 break;
 662         case 0x4:
 663                 dep = 512;
 664                 break;
 665         case 0x5:
 666                 dep = 1024;
 667                 break;
 668         default:
 669                 return -EOPNOTSUPP;
 670         }
 671
 672         if (!qopt->enable)
 673                 goto disable;
 674         if (qopt->num_entries >= dep)
 675                 return -EINVAL;
 676         if (!qopt->base_time)
 677                 return -ERANGE;
 678         if (!qopt->cycle_time)
 679                 return -ERANGE;
 680
 681         if (!plat->est) {
 682                 plat->est = devm_kzalloc(priv->device, sizeof(*plat->est),
 683                                          GFP_KERNEL);
 684                 if (!plat->est)
 685                         return -ENOMEM;
 686         } else {
 687                 memset(plat->est, 0, sizeof(*plat->est));
 688         }
 689
 690         size = qopt->num_entries;
 691
 692         priv->plat->est->gcl_size = size;
 693         priv->plat->est->enable = qopt->enable;
 694
 695         for (i = 0; i < size; i++) {
 696                 s64 delta_ns = qopt->entries[i].interval;
 697                 u32 gates = qopt->entries[i].gate_mask;
 698
 699                 if (delta_ns > GENMASK(wid, 0))
 700                         return -ERANGE;
 701                 if (gates > GENMASK(31 - wid, 0))
 702                         return -ERANGE;
 703
 704                 switch (qopt->entries[i].command) {
 705                 case TC_TAPRIO_CMD_SET_GATES:
 706                         if (fpe)
 707                                 return -EINVAL;
 708                         break;
 709                 case TC_TAPRIO_CMD_SET_AND_HOLD:
 710                         gates |= BIT(0);
 711                         fpe = true;
 712                         break;
 713                 case TC_TAPRIO_CMD_SET_AND_RELEASE:
 714                         gates &= ~BIT(0);
 715                         fpe = true;
 716                         break;
 717                 default:
 718                         return -EOPNOTSUPP;
 719                 }
 720
 721                 priv->plat->est->gcl[i] = delta_ns | (gates << wid);
 722         }
 723
 724         /* Adjust for real system time */
 725         priv->ptp_clock_ops.gettime64(&priv->ptp_clock_ops, &current_time);
 726         current_time_ns = timespec64_to_ktime(current_time);
 727         if (ktime_after(qopt->base_time, current_time_ns)) {
 728                 time = ktime_to_timespec64(qopt->base_time);
 729         } else {
 730                 ktime_t base_time;
 731                 s64 n;
 732
 733                 n = div64_s64(ktime_sub_ns(current_time_ns, qopt->base_time),
 734                               qopt->cycle_time);
 735                 base_time = ktime_add_ns(qopt->base_time,
 736                                          (n + 1) * qopt->cycle_time);
 737
 738                 time = ktime_to_timespec64(base_time);
 739         }
 740
 741         priv->plat->est->btr[0] = (u32)time.tv_nsec;
 742         priv->plat->est->btr[1] = (u32)time.tv_sec;
 743
 744         ctr = qopt->cycle_time;
 745         priv->plat->est->ctr[0] = do_div(ctr, NSEC_PER_SEC);
 746         priv->plat->est->ctr[1] = (u32)ctr;
 747
 748         if (fpe && !priv->dma_cap.fpesel)
 749                 return -EOPNOTSUPP;
 750
 751         ret = stmmac_fpe_configure(priv, priv->ioaddr,
 752                                    priv->plat->tx_queues_to_use,
 753                                    priv->plat->rx_queues_to_use, fpe);
 754         if (ret && fpe) {
 755                 netdev_err(priv->dev, "failed to enable Frame Preemption\n");
 756                 return ret;
 757         }
 758
 759         ret = stmmac_est_configure(priv, priv->ioaddr, priv->plat->est,
 760                                    priv->plat->clk_ptp_rate);
 761         if (ret) {
 762                 netdev_err(priv->dev, "failed to configure EST\n");
 763                 goto disable;
 764         }
 765
 766         netdev_info(priv->dev, "configured EST\n");
 767         return 0;
 768
 769 disable:
 770         priv->plat->est->enable = false;
 771         stmmac_est_configure(priv, priv->ioaddr, priv->plat->est,
 772                              priv->plat->clk_ptp_rate);
 773         return ret;
 774 }
 775
 776 static int tc_setup_etf(struct stmmac_priv *priv,
 777                         struct tc_etf_qopt_offload *qopt)
 778 {
 779         if (!priv->dma_cap.tbssel)
 780                 return -EOPNOTSUPP;
 781         if (qopt->queue >= priv->plat->tx_queues_to_use)
 782                 return -EINVAL;
 783         if (!(priv->tx_queue[qopt->queue].tbs & STMMAC_TBS_AVAIL))
 784                 return -EINVAL;
 785
 786         if (qopt->enable)
 787                 priv->tx_queue[qopt->queue].tbs |= STMMAC_TBS_EN;
 788         else
 789                 priv->tx_queue[qopt->queue].tbs &= ~STMMAC_TBS_EN;
 790
 791         netdev_info(priv->dev, "%s ETF for Queue %d\n",
 792                     qopt->enable ? "enabled" : "disabled", qopt->queue);
 793         return 0;
 794 }
 795
 796 const struct stmmac_tc_ops dwmac510_tc_ops = {
 797         .init = tc_init,
 798         .setup_cls_u32 = tc_setup_cls_u32,
 799         .setup_cbs = tc_setup_cbs,
 800         .setup_cls = tc_setup_cls,
 801         .setup_taprio = tc_setup_taprio,
 802         .setup_etf = tc_setup_etf,
 803 };