1 // SPDX-License-Identifier: GPL-2.0 2 /* Marvell RVU Ethernet driver 3 * 4 * Copyright (C) 2020 Marvell. 5 * 6 */ 7 8 #include <linux/interrupt.h> 9 #include <linux/pci.h> 10 #include <net/tso.h> 11 12 #include "otx2_reg.h" 13 #include "otx2_common.h" 14 #include "otx2_struct.h" 15 #include "cn10k.h" 16 17 static void otx2_nix_rq_op_stats(struct queue_stats *stats, 18 struct otx2_nic *pfvf, int qidx) 19 { 20 u64 incr = (u64)qidx << 32; 21 u64 *ptr; 22 23 ptr = (u64 *)otx2_get_regaddr(pfvf, NIX_LF_RQ_OP_OCTS); 24 stats->bytes = otx2_atomic64_add(incr, ptr); 25 26 ptr = (u64 *)otx2_get_regaddr(pfvf, NIX_LF_RQ_OP_PKTS); 27 stats->pkts = otx2_atomic64_add(incr, ptr); 28 } 29 30 static void otx2_nix_sq_op_stats(struct queue_stats *stats, 31 struct otx2_nic *pfvf, int qidx) 32 { 33 u64 incr = (u64)qidx << 32; 34 u64 *ptr; 35 36 ptr = (u64 *)otx2_get_regaddr(pfvf, NIX_LF_SQ_OP_OCTS); 37 stats->bytes = otx2_atomic64_add(incr, ptr); 38 39 ptr = (u64 *)otx2_get_regaddr(pfvf, NIX_LF_SQ_OP_PKTS); 40 stats->pkts = otx2_atomic64_add(incr, ptr); 41 } 42 43 void otx2_update_lmac_stats(struct otx2_nic *pfvf) 44 { 45 struct msg_req *req; 46 47 if (!netif_running(pfvf->netdev)) 48 return; 49 50 mutex_lock(&pfvf->mbox.lock); 51 req = otx2_mbox_alloc_msg_cgx_stats(&pfvf->mbox); 52 if (!req) { 53 mutex_unlock(&pfvf->mbox.lock); 54 return; 55 } 56 57 otx2_sync_mbox_msg(&pfvf->mbox); 58 mutex_unlock(&pfvf->mbox.lock); 59 } 60 61 void otx2_update_lmac_fec_stats(struct otx2_nic *pfvf) 62 { 63 struct msg_req *req; 64 65 if (!netif_running(pfvf->netdev)) 66 return; 67 mutex_lock(&pfvf->mbox.lock); 68 req = otx2_mbox_alloc_msg_cgx_fec_stats(&pfvf->mbox); 69 if (req) 70 otx2_sync_mbox_msg(&pfvf->mbox); 71 mutex_unlock(&pfvf->mbox.lock); 72 } 73 74 int otx2_update_rq_stats(struct otx2_nic *pfvf, int qidx) 75 { 76 struct otx2_rcv_queue *rq = &pfvf->qset.rq[qidx]; 77 78 if (!pfvf->qset.rq) 79 return 0; 80 81 otx2_nix_rq_op_stats(&rq->stats, pfvf, qidx); 82 return 1; 83 } 84 85 int otx2_update_sq_stats(struct otx2_nic *pfvf, int qidx) 86 { 87 struct otx2_snd_queue *sq = &pfvf->qset.sq[qidx]; 88 89 if (!pfvf->qset.sq) 90 return 0; 91 92 otx2_nix_sq_op_stats(&sq->stats, pfvf, qidx); 93 return 1; 94 } 95 96 void otx2_get_dev_stats(struct otx2_nic *pfvf) 97 { 98 struct otx2_dev_stats *dev_stats = &pfvf->hw.dev_stats; 99 100 dev_stats->rx_bytes = OTX2_GET_RX_STATS(RX_OCTS); 101 dev_stats->rx_drops = OTX2_GET_RX_STATS(RX_DROP); 102 dev_stats->rx_bcast_frames = OTX2_GET_RX_STATS(RX_BCAST); 103 dev_stats->rx_mcast_frames = OTX2_GET_RX_STATS(RX_MCAST); 104 dev_stats->rx_ucast_frames = OTX2_GET_RX_STATS(RX_UCAST); 105 dev_stats->rx_frames = dev_stats->rx_bcast_frames + 106 dev_stats->rx_mcast_frames + 107 dev_stats->rx_ucast_frames; 108 109 dev_stats->tx_bytes = OTX2_GET_TX_STATS(TX_OCTS); 110 dev_stats->tx_drops = OTX2_GET_TX_STATS(TX_DROP); 111 dev_stats->tx_bcast_frames = OTX2_GET_TX_STATS(TX_BCAST); 112 dev_stats->tx_mcast_frames = OTX2_GET_TX_STATS(TX_MCAST); 113 dev_stats->tx_ucast_frames = OTX2_GET_TX_STATS(TX_UCAST); 114 dev_stats->tx_frames = dev_stats->tx_bcast_frames + 115 dev_stats->tx_mcast_frames + 116 dev_stats->tx_ucast_frames; 117 } 118 119 void otx2_get_stats64(struct net_device *netdev, 120 struct rtnl_link_stats64 *stats) 121 { 122 struct otx2_nic *pfvf = netdev_priv(netdev); 123 struct otx2_dev_stats *dev_stats; 124 125 otx2_get_dev_stats(pfvf); 126 127 dev_stats = &pfvf->hw.dev_stats; 128 stats->rx_bytes = dev_stats->rx_bytes; 129 stats->rx_packets = dev_stats->rx_frames; 130 stats->rx_dropped = dev_stats->rx_drops; 131 stats->multicast = dev_stats->rx_mcast_frames; 132 133 stats->tx_bytes = dev_stats->tx_bytes; 134 stats->tx_packets = dev_stats->tx_frames; 135 stats->tx_dropped = dev_stats->tx_drops; 136 } 137 EXPORT_SYMBOL(otx2_get_stats64); 138 139 /* Sync MAC address with RVU AF */ 140 static int otx2_hw_set_mac_addr(struct otx2_nic *pfvf, u8 *mac) 141 { 142 struct nix_set_mac_addr *req; 143 int err; 144 145 mutex_lock(&pfvf->mbox.lock); 146 req = otx2_mbox_alloc_msg_nix_set_mac_addr(&pfvf->mbox); 147 if (!req) { 148 mutex_unlock(&pfvf->mbox.lock); 149 return -ENOMEM; 150 } 151 152 ether_addr_copy(req->mac_addr, mac); 153 154 err = otx2_sync_mbox_msg(&pfvf->mbox); 155 mutex_unlock(&pfvf->mbox.lock); 156 return err; 157 } 158 159 static int otx2_hw_get_mac_addr(struct otx2_nic *pfvf, 160 struct net_device *netdev) 161 { 162 struct nix_get_mac_addr_rsp *rsp; 163 struct mbox_msghdr *msghdr; 164 struct msg_req *req; 165 int err; 166 167 mutex_lock(&pfvf->mbox.lock); 168 req = otx2_mbox_alloc_msg_nix_get_mac_addr(&pfvf->mbox); 169 if (!req) { 170 mutex_unlock(&pfvf->mbox.lock); 171 return -ENOMEM; 172 } 173 174 err = otx2_sync_mbox_msg(&pfvf->mbox); 175 if (err) { 176 mutex_unlock(&pfvf->mbox.lock); 177 return err; 178 } 179 180 msghdr = otx2_mbox_get_rsp(&pfvf->mbox.mbox, 0, &req->hdr); 181 if (IS_ERR(msghdr)) { 182 mutex_unlock(&pfvf->mbox.lock); 183 return PTR_ERR(msghdr); 184 } 185 rsp = (struct nix_get_mac_addr_rsp *)msghdr; 186 eth_hw_addr_set(netdev, rsp->mac_addr); 187 mutex_unlock(&pfvf->mbox.lock); 188 189 return 0; 190 } 191 192 int otx2_set_mac_address(struct net_device *netdev, void *p) 193 { 194 struct otx2_nic *pfvf = netdev_priv(netdev); 195 struct sockaddr *addr = p; 196 197 if (!is_valid_ether_addr(addr->sa_data)) 198 return -EADDRNOTAVAIL; 199 200 if (!otx2_hw_set_mac_addr(pfvf, addr->sa_data)) { 201 eth_hw_addr_set(netdev, addr->sa_data); 202 /* update dmac field in vlan offload rule */ 203 if (netif_running(netdev) && 204 pfvf->flags & OTX2_FLAG_RX_VLAN_SUPPORT) 205 otx2_install_rxvlan_offload_flow(pfvf); 206 /* update dmac address in ntuple and DMAC filter list */ 207 if (pfvf->flags & OTX2_FLAG_DMACFLTR_SUPPORT) 208 otx2_dmacflt_update_pfmac_flow(pfvf); 209 } else { 210 return -EPERM; 211 } 212 213 return 0; 214 } 215 EXPORT_SYMBOL(otx2_set_mac_address); 216 217 int otx2_hw_set_mtu(struct otx2_nic *pfvf, int mtu) 218 { 219 struct nix_frs_cfg *req; 220 u16 maxlen; 221 int err; 222 223 maxlen = otx2_get_max_mtu(pfvf) + OTX2_ETH_HLEN + OTX2_HW_TIMESTAMP_LEN; 224 225 mutex_lock(&pfvf->mbox.lock); 226 req = otx2_mbox_alloc_msg_nix_set_hw_frs(&pfvf->mbox); 227 if (!req) { 228 mutex_unlock(&pfvf->mbox.lock); 229 return -ENOMEM; 230 } 231 232 req->maxlen = pfvf->netdev->mtu + OTX2_ETH_HLEN + OTX2_HW_TIMESTAMP_LEN; 233 234 /* Use max receive length supported by hardware for loopback devices */ 235 if (is_otx2_lbkvf(pfvf->pdev)) 236 req->maxlen = maxlen; 237 238 err = otx2_sync_mbox_msg(&pfvf->mbox); 239 mutex_unlock(&pfvf->mbox.lock); 240 return err; 241 } 242 243 int otx2_config_pause_frm(struct otx2_nic *pfvf) 244 { 245 struct cgx_pause_frm_cfg *req; 246 int err; 247 248 if (is_otx2_lbkvf(pfvf->pdev)) 249 return 0; 250 251 mutex_lock(&pfvf->mbox.lock); 252 req = otx2_mbox_alloc_msg_cgx_cfg_pause_frm(&pfvf->mbox); 253 if (!req) { 254 err = -ENOMEM; 255 goto unlock; 256 } 257 258 req->rx_pause = !!(pfvf->flags & OTX2_FLAG_RX_PAUSE_ENABLED); 259 req->tx_pause = !!(pfvf->flags & OTX2_FLAG_TX_PAUSE_ENABLED); 260 req->set = 1; 261 262 err = otx2_sync_mbox_msg(&pfvf->mbox); 263 unlock: 264 mutex_unlock(&pfvf->mbox.lock); 265 return err; 266 } 267 EXPORT_SYMBOL(otx2_config_pause_frm); 268 269 int otx2_set_flowkey_cfg(struct otx2_nic *pfvf) 270 { 271 struct otx2_rss_info *rss = &pfvf->hw.rss_info; 272 struct nix_rss_flowkey_cfg_rsp *rsp; 273 struct nix_rss_flowkey_cfg *req; 274 int err; 275 276 mutex_lock(&pfvf->mbox.lock); 277 req = otx2_mbox_alloc_msg_nix_rss_flowkey_cfg(&pfvf->mbox); 278 if (!req) { 279 mutex_unlock(&pfvf->mbox.lock); 280 return -ENOMEM; 281 } 282 req->mcam_index = -1; /* Default or reserved index */ 283 req->flowkey_cfg = rss->flowkey_cfg; 284 req->group = DEFAULT_RSS_CONTEXT_GROUP; 285 286 err = otx2_sync_mbox_msg(&pfvf->mbox); 287 if (err) 288 goto fail; 289 290 rsp = (struct nix_rss_flowkey_cfg_rsp *) 291 otx2_mbox_get_rsp(&pfvf->mbox.mbox, 0, &req->hdr); 292 if (IS_ERR(rsp)) { 293 err = PTR_ERR(rsp); 294 goto fail; 295 } 296 297 pfvf->hw.flowkey_alg_idx = rsp->alg_idx; 298 fail: 299 mutex_unlock(&pfvf->mbox.lock); 300 return err; 301 } 302 303 int otx2_set_rss_table(struct otx2_nic *pfvf, int ctx_id) 304 { 305 struct otx2_rss_info *rss = &pfvf->hw.rss_info; 306 const int index = rss->rss_size * ctx_id; 307 struct mbox *mbox = &pfvf->mbox; 308 struct otx2_rss_ctx *rss_ctx; 309 struct nix_aq_enq_req *aq; 310 int idx, err; 311 312 mutex_lock(&mbox->lock); 313 rss_ctx = rss->rss_ctx[ctx_id]; 314 /* Get memory to put this msg */ 315 for (idx = 0; idx < rss->rss_size; idx++) { 316 aq = otx2_mbox_alloc_msg_nix_aq_enq(mbox); 317 if (!aq) { 318 /* The shared memory buffer can be full. 319 * Flush it and retry 320 */ 321 err = otx2_sync_mbox_msg(mbox); 322 if (err) { 323 mutex_unlock(&mbox->lock); 324 return err; 325 } 326 aq = otx2_mbox_alloc_msg_nix_aq_enq(mbox); 327 if (!aq) { 328 mutex_unlock(&mbox->lock); 329 return -ENOMEM; 330 } 331 } 332 333 aq->rss.rq = rss_ctx->ind_tbl[idx]; 334 335 /* Fill AQ info */ 336 aq->qidx = index + idx; 337 aq->ctype = NIX_AQ_CTYPE_RSS; 338 aq->op = NIX_AQ_INSTOP_INIT; 339 } 340 err = otx2_sync_mbox_msg(mbox); 341 mutex_unlock(&mbox->lock); 342 return err; 343 } 344 345 void otx2_set_rss_key(struct otx2_nic *pfvf) 346 { 347 struct otx2_rss_info *rss = &pfvf->hw.rss_info; 348 u64 *key = (u64 *)&rss->key[4]; 349 int idx; 350 351 /* 352bit or 44byte key needs to be configured as below 352 * NIX_LF_RX_SECRETX0 = key<351:288> 353 * NIX_LF_RX_SECRETX1 = key<287:224> 354 * NIX_LF_RX_SECRETX2 = key<223:160> 355 * NIX_LF_RX_SECRETX3 = key<159:96> 356 * NIX_LF_RX_SECRETX4 = key<95:32> 357 * NIX_LF_RX_SECRETX5<63:32> = key<31:0> 358 */ 359 otx2_write64(pfvf, NIX_LF_RX_SECRETX(5), 360 (u64)(*((u32 *)&rss->key)) << 32); 361 idx = sizeof(rss->key) / sizeof(u64); 362 while (idx > 0) { 363 idx--; 364 otx2_write64(pfvf, NIX_LF_RX_SECRETX(idx), *key++); 365 } 366 } 367 368 int otx2_rss_init(struct otx2_nic *pfvf) 369 { 370 struct otx2_rss_info *rss = &pfvf->hw.rss_info; 371 struct otx2_rss_ctx *rss_ctx; 372 int idx, ret = 0; 373 374 rss->rss_size = sizeof(*rss->rss_ctx[DEFAULT_RSS_CONTEXT_GROUP]); 375 376 /* Init RSS key if it is not setup already */ 377 if (!rss->enable) 378 netdev_rss_key_fill(rss->key, sizeof(rss->key)); 379 otx2_set_rss_key(pfvf); 380 381 if (!netif_is_rxfh_configured(pfvf->netdev)) { 382 /* Set RSS group 0 as default indirection table */ 383 rss->rss_ctx[DEFAULT_RSS_CONTEXT_GROUP] = kzalloc(rss->rss_size, 384 GFP_KERNEL); 385 if (!rss->rss_ctx[DEFAULT_RSS_CONTEXT_GROUP]) 386 return -ENOMEM; 387 388 rss_ctx = rss->rss_ctx[DEFAULT_RSS_CONTEXT_GROUP]; 389 for (idx = 0; idx < rss->rss_size; idx++) 390 rss_ctx->ind_tbl[idx] = 391 ethtool_rxfh_indir_default(idx, 392 pfvf->hw.rx_queues); 393 } 394 ret = otx2_set_rss_table(pfvf, DEFAULT_RSS_CONTEXT_GROUP); 395 if (ret) 396 return ret; 397 398 /* Flowkey or hash config to be used for generating flow tag */ 399 rss->flowkey_cfg = rss->enable ? rss->flowkey_cfg : 400 NIX_FLOW_KEY_TYPE_IPV4 | NIX_FLOW_KEY_TYPE_IPV6 | 401 NIX_FLOW_KEY_TYPE_TCP | NIX_FLOW_KEY_TYPE_UDP | 402 NIX_FLOW_KEY_TYPE_SCTP | NIX_FLOW_KEY_TYPE_VLAN | 403 NIX_FLOW_KEY_TYPE_IPV4_PROTO; 404 405 ret = otx2_set_flowkey_cfg(pfvf); 406 if (ret) 407 return ret; 408 409 rss->enable = true; 410 return 0; 411 } 412 413 /* Setup UDP segmentation algorithm in HW */ 414 static void otx2_setup_udp_segmentation(struct nix_lso_format_cfg *lso, bool v4) 415 { 416 struct nix_lso_format *field; 417 418 field = (struct nix_lso_format *)&lso->fields[0]; 419 lso->field_mask = GENMASK(18, 0); 420 421 /* IP's Length field */ 422 field->layer = NIX_TXLAYER_OL3; 423 /* In ipv4, length field is at offset 2 bytes, for ipv6 it's 4 */ 424 field->offset = v4 ? 2 : 4; 425 field->sizem1 = 1; /* i.e 2 bytes */ 426 field->alg = NIX_LSOALG_ADD_PAYLEN; 427 field++; 428 429 /* No ID field in IPv6 header */ 430 if (v4) { 431 /* Increment IPID */ 432 field->layer = NIX_TXLAYER_OL3; 433 field->offset = 4; 434 field->sizem1 = 1; /* i.e 2 bytes */ 435 field->alg = NIX_LSOALG_ADD_SEGNUM; 436 field++; 437 } 438 439 /* Update length in UDP header */ 440 field->layer = NIX_TXLAYER_OL4; 441 field->offset = 4; 442 field->sizem1 = 1; 443 field->alg = NIX_LSOALG_ADD_PAYLEN; 444 } 445 446 /* Setup segmentation algorithms in HW and retrieve algorithm index */ 447 void otx2_setup_segmentation(struct otx2_nic *pfvf) 448 { 449 struct nix_lso_format_cfg_rsp *rsp; 450 struct nix_lso_format_cfg *lso; 451 struct otx2_hw *hw = &pfvf->hw; 452 int err; 453 454 mutex_lock(&pfvf->mbox.lock); 455 456 /* UDPv4 segmentation */ 457 lso = otx2_mbox_alloc_msg_nix_lso_format_cfg(&pfvf->mbox); 458 if (!lso) 459 goto fail; 460 461 /* Setup UDP/IP header fields that HW should update per segment */ 462 otx2_setup_udp_segmentation(lso, true); 463 464 err = otx2_sync_mbox_msg(&pfvf->mbox); 465 if (err) 466 goto fail; 467 468 rsp = (struct nix_lso_format_cfg_rsp *) 469 otx2_mbox_get_rsp(&pfvf->mbox.mbox, 0, &lso->hdr); 470 if (IS_ERR(rsp)) 471 goto fail; 472 473 hw->lso_udpv4_idx = rsp->lso_format_idx; 474 475 /* UDPv6 segmentation */ 476 lso = otx2_mbox_alloc_msg_nix_lso_format_cfg(&pfvf->mbox); 477 if (!lso) 478 goto fail; 479 480 /* Setup UDP/IP header fields that HW should update per segment */ 481 otx2_setup_udp_segmentation(lso, false); 482 483 err = otx2_sync_mbox_msg(&pfvf->mbox); 484 if (err) 485 goto fail; 486 487 rsp = (struct nix_lso_format_cfg_rsp *) 488 otx2_mbox_get_rsp(&pfvf->mbox.mbox, 0, &lso->hdr); 489 if (IS_ERR(rsp)) 490 goto fail; 491 492 hw->lso_udpv6_idx = rsp->lso_format_idx; 493 mutex_unlock(&pfvf->mbox.lock); 494 return; 495 fail: 496 mutex_unlock(&pfvf->mbox.lock); 497 netdev_info(pfvf->netdev, 498 "Failed to get LSO index for UDP GSO offload, disabling\n"); 499 pfvf->netdev->hw_features &= ~NETIF_F_GSO_UDP_L4; 500 } 501 502 void otx2_config_irq_coalescing(struct otx2_nic *pfvf, int qidx) 503 { 504 /* Configure CQE interrupt coalescing parameters 505 * 506 * HW triggers an irq when ECOUNT > cq_ecount_wait, hence 507 * set 1 less than cq_ecount_wait. And cq_time_wait is in 508 * usecs, convert that to 100ns count. 509 */ 510 otx2_write64(pfvf, NIX_LF_CINTX_WAIT(qidx), 511 ((u64)(pfvf->hw.cq_time_wait * 10) << 48) | 512 ((u64)pfvf->hw.cq_qcount_wait << 32) | 513 (pfvf->hw.cq_ecount_wait - 1)); 514 } 515 516 int __otx2_alloc_rbuf(struct otx2_nic *pfvf, struct otx2_pool *pool, 517 dma_addr_t *dma) 518 { 519 u8 *buf; 520 521 buf = napi_alloc_frag_align(pool->rbsize, OTX2_ALIGN); 522 if (unlikely(!buf)) 523 return -ENOMEM; 524 525 *dma = dma_map_single_attrs(pfvf->dev, buf, pool->rbsize, 526 DMA_FROM_DEVICE, DMA_ATTR_SKIP_CPU_SYNC); 527 if (unlikely(dma_mapping_error(pfvf->dev, *dma))) { 528 page_frag_free(buf); 529 return -ENOMEM; 530 } 531 532 return 0; 533 } 534 535 static int otx2_alloc_rbuf(struct otx2_nic *pfvf, struct otx2_pool *pool, 536 dma_addr_t *dma) 537 { 538 int ret; 539 540 local_bh_disable(); 541 ret = __otx2_alloc_rbuf(pfvf, pool, dma); 542 local_bh_enable(); 543 return ret; 544 } 545 546 int otx2_alloc_buffer(struct otx2_nic *pfvf, struct otx2_cq_queue *cq, 547 dma_addr_t *dma) 548 { 549 if (unlikely(__otx2_alloc_rbuf(pfvf, cq->rbpool, dma))) { 550 struct refill_work *work; 551 struct delayed_work *dwork; 552 553 work = &pfvf->refill_wrk[cq->cq_idx]; 554 dwork = &work->pool_refill_work; 555 /* Schedule a task if no other task is running */ 556 if (!cq->refill_task_sched) { 557 cq->refill_task_sched = true; 558 schedule_delayed_work(dwork, 559 msecs_to_jiffies(100)); 560 } 561 return -ENOMEM; 562 } 563 return 0; 564 } 565 566 void otx2_tx_timeout(struct net_device *netdev, unsigned int txq) 567 { 568 struct otx2_nic *pfvf = netdev_priv(netdev); 569 570 schedule_work(&pfvf->reset_task); 571 } 572 EXPORT_SYMBOL(otx2_tx_timeout); 573 574 void otx2_get_mac_from_af(struct net_device *netdev) 575 { 576 struct otx2_nic *pfvf = netdev_priv(netdev); 577 int err; 578 579 err = otx2_hw_get_mac_addr(pfvf, netdev); 580 if (err) 581 dev_warn(pfvf->dev, "Failed to read mac from hardware\n"); 582 583 /* If AF doesn't provide a valid MAC, generate a random one */ 584 if (!is_valid_ether_addr(netdev->dev_addr)) 585 eth_hw_addr_random(netdev); 586 } 587 EXPORT_SYMBOL(otx2_get_mac_from_af); 588 589 int otx2_txschq_config(struct otx2_nic *pfvf, int lvl, int prio, bool txschq_for_pfc) 590 { 591 u16 (*schq_list)[MAX_TXSCHQ_PER_FUNC]; 592 struct otx2_hw *hw = &pfvf->hw; 593 struct nix_txschq_config *req; 594 u64 schq, parent; 595 u64 dwrr_val; 596 597 dwrr_val = mtu_to_dwrr_weight(pfvf, pfvf->tx_max_pktlen); 598 599 req = otx2_mbox_alloc_msg_nix_txschq_cfg(&pfvf->mbox); 600 if (!req) 601 return -ENOMEM; 602 603 req->lvl = lvl; 604 req->num_regs = 1; 605 606 schq_list = hw->txschq_list; 607 #ifdef CONFIG_DCB 608 if (txschq_for_pfc) 609 schq_list = pfvf->pfc_schq_list; 610 #endif 611 612 schq = schq_list[lvl][prio]; 613 /* Set topology e.t.c configuration */ 614 if (lvl == NIX_TXSCH_LVL_SMQ) { 615 req->reg[0] = NIX_AF_SMQX_CFG(schq); 616 req->regval[0] = ((u64)pfvf->tx_max_pktlen << 8) | OTX2_MIN_MTU; 617 req->regval[0] |= (0x20ULL << 51) | (0x80ULL << 39) | 618 (0x2ULL << 36); 619 req->num_regs++; 620 /* MDQ config */ 621 parent = schq_list[NIX_TXSCH_LVL_TL4][prio]; 622 req->reg[1] = NIX_AF_MDQX_PARENT(schq); 623 req->regval[1] = parent << 16; 624 req->num_regs++; 625 /* Set DWRR quantum */ 626 req->reg[2] = NIX_AF_MDQX_SCHEDULE(schq); 627 req->regval[2] = dwrr_val; 628 } else if (lvl == NIX_TXSCH_LVL_TL4) { 629 parent = schq_list[NIX_TXSCH_LVL_TL3][prio]; 630 req->reg[0] = NIX_AF_TL4X_PARENT(schq); 631 req->regval[0] = parent << 16; 632 req->num_regs++; 633 req->reg[1] = NIX_AF_TL4X_SCHEDULE(schq); 634 req->regval[1] = dwrr_val; 635 } else if (lvl == NIX_TXSCH_LVL_TL3) { 636 parent = schq_list[NIX_TXSCH_LVL_TL2][prio]; 637 req->reg[0] = NIX_AF_TL3X_PARENT(schq); 638 req->regval[0] = parent << 16; 639 req->num_regs++; 640 req->reg[1] = NIX_AF_TL3X_SCHEDULE(schq); 641 req->regval[1] = dwrr_val; 642 if (lvl == hw->txschq_link_cfg_lvl) { 643 req->num_regs++; 644 req->reg[2] = NIX_AF_TL3_TL2X_LINKX_CFG(schq, hw->tx_link); 645 /* Enable this queue and backpressure 646 * and set relative channel 647 */ 648 req->regval[2] = BIT_ULL(13) | BIT_ULL(12) | prio; 649 } 650 } else if (lvl == NIX_TXSCH_LVL_TL2) { 651 parent = schq_list[NIX_TXSCH_LVL_TL1][prio]; 652 req->reg[0] = NIX_AF_TL2X_PARENT(schq); 653 req->regval[0] = parent << 16; 654 655 req->num_regs++; 656 req->reg[1] = NIX_AF_TL2X_SCHEDULE(schq); 657 req->regval[1] = TXSCH_TL1_DFLT_RR_PRIO << 24 | dwrr_val; 658 659 if (lvl == hw->txschq_link_cfg_lvl) { 660 req->num_regs++; 661 req->reg[2] = NIX_AF_TL3_TL2X_LINKX_CFG(schq, hw->tx_link); 662 /* Enable this queue and backpressure 663 * and set relative channel 664 */ 665 req->regval[2] = BIT_ULL(13) | BIT_ULL(12) | prio; 666 } 667 } else if (lvl == NIX_TXSCH_LVL_TL1) { 668 /* Default config for TL1. 669 * For VF this is always ignored. 670 */ 671 672 /* On CN10K, if RR_WEIGHT is greater than 16384, HW will 673 * clip it to 16384, so configuring a 24bit max value 674 * will work on both OTx2 and CN10K. 675 */ 676 req->reg[0] = NIX_AF_TL1X_SCHEDULE(schq); 677 req->regval[0] = TXSCH_TL1_DFLT_RR_QTM; 678 679 req->num_regs++; 680 req->reg[1] = NIX_AF_TL1X_TOPOLOGY(schq); 681 req->regval[1] = (TXSCH_TL1_DFLT_RR_PRIO << 1); 682 683 req->num_regs++; 684 req->reg[2] = NIX_AF_TL1X_CIR(schq); 685 req->regval[2] = 0; 686 } 687 688 return otx2_sync_mbox_msg(&pfvf->mbox); 689 } 690 EXPORT_SYMBOL(otx2_txschq_config); 691 692 int otx2_smq_flush(struct otx2_nic *pfvf, int smq) 693 { 694 struct nix_txschq_config *req; 695 int rc; 696 697 mutex_lock(&pfvf->mbox.lock); 698 699 req = otx2_mbox_alloc_msg_nix_txschq_cfg(&pfvf->mbox); 700 if (!req) { 701 mutex_unlock(&pfvf->mbox.lock); 702 return -ENOMEM; 703 } 704 705 req->lvl = NIX_TXSCH_LVL_SMQ; 706 req->reg[0] = NIX_AF_SMQX_CFG(smq); 707 req->regval[0] |= BIT_ULL(49); 708 req->num_regs++; 709 710 rc = otx2_sync_mbox_msg(&pfvf->mbox); 711 mutex_unlock(&pfvf->mbox.lock); 712 return rc; 713 } 714 EXPORT_SYMBOL(otx2_smq_flush); 715 716 int otx2_txsch_alloc(struct otx2_nic *pfvf) 717 { 718 struct nix_txsch_alloc_req *req; 719 int lvl; 720 721 /* Get memory to put this msg */ 722 req = otx2_mbox_alloc_msg_nix_txsch_alloc(&pfvf->mbox); 723 if (!req) 724 return -ENOMEM; 725 726 /* Request one schq per level */ 727 for (lvl = 0; lvl < NIX_TXSCH_LVL_CNT; lvl++) 728 req->schq[lvl] = 1; 729 730 return otx2_sync_mbox_msg(&pfvf->mbox); 731 } 732 733 int otx2_txschq_stop(struct otx2_nic *pfvf) 734 { 735 struct nix_txsch_free_req *free_req; 736 int lvl, schq, err; 737 738 mutex_lock(&pfvf->mbox.lock); 739 /* Free the transmit schedulers */ 740 free_req = otx2_mbox_alloc_msg_nix_txsch_free(&pfvf->mbox); 741 if (!free_req) { 742 mutex_unlock(&pfvf->mbox.lock); 743 return -ENOMEM; 744 } 745 746 free_req->flags = TXSCHQ_FREE_ALL; 747 err = otx2_sync_mbox_msg(&pfvf->mbox); 748 mutex_unlock(&pfvf->mbox.lock); 749 750 /* Clear the txschq list */ 751 for (lvl = 0; lvl < NIX_TXSCH_LVL_CNT; lvl++) { 752 for (schq = 0; schq < MAX_TXSCHQ_PER_FUNC; schq++) 753 pfvf->hw.txschq_list[lvl][schq] = 0; 754 } 755 return err; 756 } 757 758 void otx2_sqb_flush(struct otx2_nic *pfvf) 759 { 760 int qidx, sqe_tail, sqe_head; 761 u64 incr, *ptr, val; 762 int timeout = 1000; 763 764 ptr = (u64 *)otx2_get_regaddr(pfvf, NIX_LF_SQ_OP_STATUS); 765 for (qidx = 0; qidx < pfvf->hw.tot_tx_queues; qidx++) { 766 incr = (u64)qidx << 32; 767 while (timeout) { 768 val = otx2_atomic64_add(incr, ptr); 769 sqe_head = (val >> 20) & 0x3F; 770 sqe_tail = (val >> 28) & 0x3F; 771 if (sqe_head == sqe_tail) 772 break; 773 usleep_range(1, 3); 774 timeout--; 775 } 776 } 777 } 778 779 /* RED and drop levels of CQ on packet reception. 780 * For CQ level is measure of emptiness ( 0x0 = full, 255 = empty). 781 */ 782 #define RQ_PASS_LVL_CQ(skid, qsize) ((((skid) + 16) * 256) / (qsize)) 783 #define RQ_DROP_LVL_CQ(skid, qsize) (((skid) * 256) / (qsize)) 784 785 /* RED and drop levels of AURA for packet reception. 786 * For AURA level is measure of fullness (0x0 = empty, 255 = full). 787 * Eg: For RQ length 1K, for pass/drop level 204/230. 788 * RED accepts pkts if free pointers > 102 & <= 205. 789 * Drops pkts if free pointers < 102. 790 */ 791 #define RQ_BP_LVL_AURA (255 - ((85 * 256) / 100)) /* BP when 85% is full */ 792 #define RQ_PASS_LVL_AURA (255 - ((95 * 256) / 100)) /* RED when 95% is full */ 793 #define RQ_DROP_LVL_AURA (255 - ((99 * 256) / 100)) /* Drop when 99% is full */ 794 795 static int otx2_rq_init(struct otx2_nic *pfvf, u16 qidx, u16 lpb_aura) 796 { 797 struct otx2_qset *qset = &pfvf->qset; 798 struct nix_aq_enq_req *aq; 799 800 /* Get memory to put this msg */ 801 aq = otx2_mbox_alloc_msg_nix_aq_enq(&pfvf->mbox); 802 if (!aq) 803 return -ENOMEM; 804 805 aq->rq.cq = qidx; 806 aq->rq.ena = 1; 807 aq->rq.pb_caching = 1; 808 aq->rq.lpb_aura = lpb_aura; /* Use large packet buffer aura */ 809 aq->rq.lpb_sizem1 = (DMA_BUFFER_LEN(pfvf->rbsize) / 8) - 1; 810 aq->rq.xqe_imm_size = 0; /* Copying of packet to CQE not needed */ 811 aq->rq.flow_tagw = 32; /* Copy full 32bit flow_tag to CQE header */ 812 aq->rq.qint_idx = 0; 813 aq->rq.lpb_drop_ena = 1; /* Enable RED dropping for AURA */ 814 aq->rq.xqe_drop_ena = 1; /* Enable RED dropping for CQ/SSO */ 815 aq->rq.xqe_pass = RQ_PASS_LVL_CQ(pfvf->hw.rq_skid, qset->rqe_cnt); 816 aq->rq.xqe_drop = RQ_DROP_LVL_CQ(pfvf->hw.rq_skid, qset->rqe_cnt); 817 aq->rq.lpb_aura_pass = RQ_PASS_LVL_AURA; 818 aq->rq.lpb_aura_drop = RQ_DROP_LVL_AURA; 819 820 /* Fill AQ info */ 821 aq->qidx = qidx; 822 aq->ctype = NIX_AQ_CTYPE_RQ; 823 aq->op = NIX_AQ_INSTOP_INIT; 824 825 return otx2_sync_mbox_msg(&pfvf->mbox); 826 } 827 828 int otx2_sq_aq_init(void *dev, u16 qidx, u16 sqb_aura) 829 { 830 struct otx2_nic *pfvf = dev; 831 struct otx2_snd_queue *sq; 832 struct nix_aq_enq_req *aq; 833 834 sq = &pfvf->qset.sq[qidx]; 835 sq->lmt_addr = (__force u64 *)(pfvf->reg_base + LMT_LF_LMTLINEX(qidx)); 836 /* Get memory to put this msg */ 837 aq = otx2_mbox_alloc_msg_nix_aq_enq(&pfvf->mbox); 838 if (!aq) 839 return -ENOMEM; 840 841 aq->sq.cq = pfvf->hw.rx_queues + qidx; 842 aq->sq.max_sqe_size = NIX_MAXSQESZ_W16; /* 128 byte */ 843 aq->sq.cq_ena = 1; 844 aq->sq.ena = 1; 845 aq->sq.smq = otx2_get_smq_idx(pfvf, qidx); 846 aq->sq.smq_rr_quantum = mtu_to_dwrr_weight(pfvf, pfvf->tx_max_pktlen); 847 aq->sq.default_chan = pfvf->hw.tx_chan_base; 848 aq->sq.sqe_stype = NIX_STYPE_STF; /* Cache SQB */ 849 aq->sq.sqb_aura = sqb_aura; 850 aq->sq.sq_int_ena = NIX_SQINT_BITS; 851 aq->sq.qint_idx = 0; 852 /* Due pipelining impact minimum 2000 unused SQ CQE's 853 * need to maintain to avoid CQ overflow. 854 */ 855 aq->sq.cq_limit = ((SEND_CQ_SKID * 256) / (pfvf->qset.sqe_cnt)); 856 857 /* Fill AQ info */ 858 aq->qidx = qidx; 859 aq->ctype = NIX_AQ_CTYPE_SQ; 860 aq->op = NIX_AQ_INSTOP_INIT; 861 862 return otx2_sync_mbox_msg(&pfvf->mbox); 863 } 864 865 static int otx2_sq_init(struct otx2_nic *pfvf, u16 qidx, u16 sqb_aura) 866 { 867 struct otx2_qset *qset = &pfvf->qset; 868 struct otx2_snd_queue *sq; 869 struct otx2_pool *pool; 870 int err; 871 872 pool = &pfvf->qset.pool[sqb_aura]; 873 sq = &qset->sq[qidx]; 874 sq->sqe_size = NIX_SQESZ_W16 ? 64 : 128; 875 sq->sqe_cnt = qset->sqe_cnt; 876 877 err = qmem_alloc(pfvf->dev, &sq->sqe, 1, sq->sqe_size); 878 if (err) 879 return err; 880 881 if (qidx < pfvf->hw.tx_queues) { 882 err = qmem_alloc(pfvf->dev, &sq->tso_hdrs, qset->sqe_cnt, 883 TSO_HEADER_SIZE); 884 if (err) 885 return err; 886 } 887 888 sq->sqe_base = sq->sqe->base; 889 sq->sg = kcalloc(qset->sqe_cnt, sizeof(struct sg_list), GFP_KERNEL); 890 if (!sq->sg) 891 return -ENOMEM; 892 893 if (pfvf->ptp && qidx < pfvf->hw.tx_queues) { 894 err = qmem_alloc(pfvf->dev, &sq->timestamps, qset->sqe_cnt, 895 sizeof(*sq->timestamps)); 896 if (err) 897 return err; 898 } 899 900 sq->head = 0; 901 sq->sqe_per_sqb = (pfvf->hw.sqb_size / sq->sqe_size) - 1; 902 sq->num_sqbs = (qset->sqe_cnt + sq->sqe_per_sqb) / sq->sqe_per_sqb; 903 /* Set SQE threshold to 10% of total SQEs */ 904 sq->sqe_thresh = ((sq->num_sqbs * sq->sqe_per_sqb) * 10) / 100; 905 sq->aura_id = sqb_aura; 906 sq->aura_fc_addr = pool->fc_addr->base; 907 sq->io_addr = (__force u64)otx2_get_regaddr(pfvf, NIX_LF_OP_SENDX(0)); 908 909 sq->stats.bytes = 0; 910 sq->stats.pkts = 0; 911 912 return pfvf->hw_ops->sq_aq_init(pfvf, qidx, sqb_aura); 913 914 } 915 916 static int otx2_cq_init(struct otx2_nic *pfvf, u16 qidx) 917 { 918 struct otx2_qset *qset = &pfvf->qset; 919 int err, pool_id, non_xdp_queues; 920 struct nix_aq_enq_req *aq; 921 struct otx2_cq_queue *cq; 922 923 cq = &qset->cq[qidx]; 924 cq->cq_idx = qidx; 925 non_xdp_queues = pfvf->hw.rx_queues + pfvf->hw.tx_queues; 926 if (qidx < pfvf->hw.rx_queues) { 927 cq->cq_type = CQ_RX; 928 cq->cint_idx = qidx; 929 cq->cqe_cnt = qset->rqe_cnt; 930 if (pfvf->xdp_prog) 931 xdp_rxq_info_reg(&cq->xdp_rxq, pfvf->netdev, qidx, 0); 932 } else if (qidx < non_xdp_queues) { 933 cq->cq_type = CQ_TX; 934 cq->cint_idx = qidx - pfvf->hw.rx_queues; 935 cq->cqe_cnt = qset->sqe_cnt; 936 } else { 937 cq->cq_type = CQ_XDP; 938 cq->cint_idx = qidx - non_xdp_queues; 939 cq->cqe_cnt = qset->sqe_cnt; 940 } 941 cq->cqe_size = pfvf->qset.xqe_size; 942 943 /* Allocate memory for CQEs */ 944 err = qmem_alloc(pfvf->dev, &cq->cqe, cq->cqe_cnt, cq->cqe_size); 945 if (err) 946 return err; 947 948 /* Save CQE CPU base for faster reference */ 949 cq->cqe_base = cq->cqe->base; 950 /* In case where all RQs auras point to single pool, 951 * all CQs receive buffer pool also point to same pool. 952 */ 953 pool_id = ((cq->cq_type == CQ_RX) && 954 (pfvf->hw.rqpool_cnt != pfvf->hw.rx_queues)) ? 0 : qidx; 955 cq->rbpool = &qset->pool[pool_id]; 956 cq->refill_task_sched = false; 957 958 /* Get memory to put this msg */ 959 aq = otx2_mbox_alloc_msg_nix_aq_enq(&pfvf->mbox); 960 if (!aq) 961 return -ENOMEM; 962 963 aq->cq.ena = 1; 964 aq->cq.qsize = Q_SIZE(cq->cqe_cnt, 4); 965 aq->cq.caching = 1; 966 aq->cq.base = cq->cqe->iova; 967 aq->cq.cint_idx = cq->cint_idx; 968 aq->cq.cq_err_int_ena = NIX_CQERRINT_BITS; 969 aq->cq.qint_idx = 0; 970 aq->cq.avg_level = 255; 971 972 if (qidx < pfvf->hw.rx_queues) { 973 aq->cq.drop = RQ_DROP_LVL_CQ(pfvf->hw.rq_skid, cq->cqe_cnt); 974 aq->cq.drop_ena = 1; 975 976 if (!is_otx2_lbkvf(pfvf->pdev)) { 977 /* Enable receive CQ backpressure */ 978 aq->cq.bp_ena = 1; 979 #ifdef CONFIG_DCB 980 aq->cq.bpid = pfvf->bpid[pfvf->queue_to_pfc_map[qidx]]; 981 #else 982 aq->cq.bpid = pfvf->bpid[0]; 983 #endif 984 985 /* Set backpressure level is same as cq pass level */ 986 aq->cq.bp = RQ_PASS_LVL_CQ(pfvf->hw.rq_skid, qset->rqe_cnt); 987 } 988 } 989 990 /* Fill AQ info */ 991 aq->qidx = qidx; 992 aq->ctype = NIX_AQ_CTYPE_CQ; 993 aq->op = NIX_AQ_INSTOP_INIT; 994 995 return otx2_sync_mbox_msg(&pfvf->mbox); 996 } 997 998 static void otx2_pool_refill_task(struct work_struct *work) 999 { 1000 struct otx2_cq_queue *cq; 1001 struct otx2_pool *rbpool; 1002 struct refill_work *wrk; 1003 int qidx, free_ptrs = 0; 1004 struct otx2_nic *pfvf; 1005 dma_addr_t bufptr; 1006 1007 wrk = container_of(work, struct refill_work, pool_refill_work.work); 1008 pfvf = wrk->pf; 1009 qidx = wrk - pfvf->refill_wrk; 1010 cq = &pfvf->qset.cq[qidx]; 1011 rbpool = cq->rbpool; 1012 free_ptrs = cq->pool_ptrs; 1013 1014 while (cq->pool_ptrs) { 1015 if (otx2_alloc_rbuf(pfvf, rbpool, &bufptr)) { 1016 /* Schedule a WQ if we fails to free atleast half of the 1017 * pointers else enable napi for this RQ. 1018 */ 1019 if (!((free_ptrs - cq->pool_ptrs) > free_ptrs / 2)) { 1020 struct delayed_work *dwork; 1021 1022 dwork = &wrk->pool_refill_work; 1023 schedule_delayed_work(dwork, 1024 msecs_to_jiffies(100)); 1025 } else { 1026 cq->refill_task_sched = false; 1027 } 1028 return; 1029 } 1030 pfvf->hw_ops->aura_freeptr(pfvf, qidx, bufptr + OTX2_HEAD_ROOM); 1031 cq->pool_ptrs--; 1032 } 1033 cq->refill_task_sched = false; 1034 } 1035 1036 int otx2_config_nix_queues(struct otx2_nic *pfvf) 1037 { 1038 int qidx, err; 1039 1040 /* Initialize RX queues */ 1041 for (qidx = 0; qidx < pfvf->hw.rx_queues; qidx++) { 1042 u16 lpb_aura = otx2_get_pool_idx(pfvf, AURA_NIX_RQ, qidx); 1043 1044 err = otx2_rq_init(pfvf, qidx, lpb_aura); 1045 if (err) 1046 return err; 1047 } 1048 1049 /* Initialize TX queues */ 1050 for (qidx = 0; qidx < pfvf->hw.tot_tx_queues; qidx++) { 1051 u16 sqb_aura = otx2_get_pool_idx(pfvf, AURA_NIX_SQ, qidx); 1052 1053 err = otx2_sq_init(pfvf, qidx, sqb_aura); 1054 if (err) 1055 return err; 1056 } 1057 1058 /* Initialize completion queues */ 1059 for (qidx = 0; qidx < pfvf->qset.cq_cnt; qidx++) { 1060 err = otx2_cq_init(pfvf, qidx); 1061 if (err) 1062 return err; 1063 } 1064 1065 pfvf->cq_op_addr = (__force u64 *)otx2_get_regaddr(pfvf, 1066 NIX_LF_CQ_OP_STATUS); 1067 1068 /* Initialize work queue for receive buffer refill */ 1069 pfvf->refill_wrk = devm_kcalloc(pfvf->dev, pfvf->qset.cq_cnt, 1070 sizeof(struct refill_work), GFP_KERNEL); 1071 if (!pfvf->refill_wrk) 1072 return -ENOMEM; 1073 1074 for (qidx = 0; qidx < pfvf->qset.cq_cnt; qidx++) { 1075 pfvf->refill_wrk[qidx].pf = pfvf; 1076 INIT_DELAYED_WORK(&pfvf->refill_wrk[qidx].pool_refill_work, 1077 otx2_pool_refill_task); 1078 } 1079 return 0; 1080 } 1081 1082 int otx2_config_nix(struct otx2_nic *pfvf) 1083 { 1084 struct nix_lf_alloc_req *nixlf; 1085 struct nix_lf_alloc_rsp *rsp; 1086 int err; 1087 1088 pfvf->qset.xqe_size = pfvf->hw.xqe_size; 1089 1090 /* Get memory to put this msg */ 1091 nixlf = otx2_mbox_alloc_msg_nix_lf_alloc(&pfvf->mbox); 1092 if (!nixlf) 1093 return -ENOMEM; 1094 1095 /* Set RQ/SQ/CQ counts */ 1096 nixlf->rq_cnt = pfvf->hw.rx_queues; 1097 nixlf->sq_cnt = pfvf->hw.tot_tx_queues; 1098 nixlf->cq_cnt = pfvf->qset.cq_cnt; 1099 nixlf->rss_sz = MAX_RSS_INDIR_TBL_SIZE; 1100 nixlf->rss_grps = MAX_RSS_GROUPS; 1101 nixlf->xqe_sz = pfvf->hw.xqe_size == 128 ? NIX_XQESZ_W16 : NIX_XQESZ_W64; 1102 /* We don't know absolute NPA LF idx attached. 1103 * AF will replace 'RVU_DEFAULT_PF_FUNC' with 1104 * NPA LF attached to this RVU PF/VF. 1105 */ 1106 nixlf->npa_func = RVU_DEFAULT_PF_FUNC; 1107 /* Disable alignment pad, enable L2 length check, 1108 * enable L4 TCP/UDP checksum verification. 1109 */ 1110 nixlf->rx_cfg = BIT_ULL(33) | BIT_ULL(35) | BIT_ULL(37); 1111 1112 err = otx2_sync_mbox_msg(&pfvf->mbox); 1113 if (err) 1114 return err; 1115 1116 rsp = (struct nix_lf_alloc_rsp *)otx2_mbox_get_rsp(&pfvf->mbox.mbox, 0, 1117 &nixlf->hdr); 1118 if (IS_ERR(rsp)) 1119 return PTR_ERR(rsp); 1120 1121 if (rsp->qints < 1) 1122 return -ENXIO; 1123 1124 return rsp->hdr.rc; 1125 } 1126 1127 void otx2_sq_free_sqbs(struct otx2_nic *pfvf) 1128 { 1129 struct otx2_qset *qset = &pfvf->qset; 1130 struct otx2_hw *hw = &pfvf->hw; 1131 struct otx2_snd_queue *sq; 1132 int sqb, qidx; 1133 u64 iova, pa; 1134 1135 for (qidx = 0; qidx < hw->tot_tx_queues; qidx++) { 1136 sq = &qset->sq[qidx]; 1137 if (!sq->sqb_ptrs) 1138 continue; 1139 for (sqb = 0; sqb < sq->sqb_count; sqb++) { 1140 if (!sq->sqb_ptrs[sqb]) 1141 continue; 1142 iova = sq->sqb_ptrs[sqb]; 1143 pa = otx2_iova_to_phys(pfvf->iommu_domain, iova); 1144 dma_unmap_page_attrs(pfvf->dev, iova, hw->sqb_size, 1145 DMA_FROM_DEVICE, 1146 DMA_ATTR_SKIP_CPU_SYNC); 1147 put_page(virt_to_page(phys_to_virt(pa))); 1148 } 1149 sq->sqb_count = 0; 1150 } 1151 } 1152 1153 void otx2_free_aura_ptr(struct otx2_nic *pfvf, int type) 1154 { 1155 int pool_id, pool_start = 0, pool_end = 0, size = 0; 1156 u64 iova, pa; 1157 1158 if (type == AURA_NIX_SQ) { 1159 pool_start = otx2_get_pool_idx(pfvf, type, 0); 1160 pool_end = pool_start + pfvf->hw.sqpool_cnt; 1161 size = pfvf->hw.sqb_size; 1162 } 1163 if (type == AURA_NIX_RQ) { 1164 pool_start = otx2_get_pool_idx(pfvf, type, 0); 1165 pool_end = pfvf->hw.rqpool_cnt; 1166 size = pfvf->rbsize; 1167 } 1168 1169 /* Free SQB and RQB pointers from the aura pool */ 1170 for (pool_id = pool_start; pool_id < pool_end; pool_id++) { 1171 iova = otx2_aura_allocptr(pfvf, pool_id); 1172 while (iova) { 1173 if (type == AURA_NIX_RQ) 1174 iova -= OTX2_HEAD_ROOM; 1175 1176 pa = otx2_iova_to_phys(pfvf->iommu_domain, iova); 1177 dma_unmap_page_attrs(pfvf->dev, iova, size, 1178 DMA_FROM_DEVICE, 1179 DMA_ATTR_SKIP_CPU_SYNC); 1180 put_page(virt_to_page(phys_to_virt(pa))); 1181 iova = otx2_aura_allocptr(pfvf, pool_id); 1182 } 1183 } 1184 } 1185 1186 void otx2_aura_pool_free(struct otx2_nic *pfvf) 1187 { 1188 struct otx2_pool *pool; 1189 int pool_id; 1190 1191 if (!pfvf->qset.pool) 1192 return; 1193 1194 for (pool_id = 0; pool_id < pfvf->hw.pool_cnt; pool_id++) { 1195 pool = &pfvf->qset.pool[pool_id]; 1196 qmem_free(pfvf->dev, pool->stack); 1197 qmem_free(pfvf->dev, pool->fc_addr); 1198 } 1199 devm_kfree(pfvf->dev, pfvf->qset.pool); 1200 pfvf->qset.pool = NULL; 1201 } 1202 1203 static int otx2_aura_init(struct otx2_nic *pfvf, int aura_id, 1204 int pool_id, int numptrs) 1205 { 1206 struct npa_aq_enq_req *aq; 1207 struct otx2_pool *pool; 1208 int err; 1209 1210 pool = &pfvf->qset.pool[pool_id]; 1211 1212 /* Allocate memory for HW to update Aura count. 1213 * Alloc one cache line, so that it fits all FC_STYPE modes. 1214 */ 1215 if (!pool->fc_addr) { 1216 err = qmem_alloc(pfvf->dev, &pool->fc_addr, 1, OTX2_ALIGN); 1217 if (err) 1218 return err; 1219 } 1220 1221 /* Initialize this aura's context via AF */ 1222 aq = otx2_mbox_alloc_msg_npa_aq_enq(&pfvf->mbox); 1223 if (!aq) { 1224 /* Shared mbox memory buffer is full, flush it and retry */ 1225 err = otx2_sync_mbox_msg(&pfvf->mbox); 1226 if (err) 1227 return err; 1228 aq = otx2_mbox_alloc_msg_npa_aq_enq(&pfvf->mbox); 1229 if (!aq) 1230 return -ENOMEM; 1231 } 1232 1233 aq->aura_id = aura_id; 1234 /* Will be filled by AF with correct pool context address */ 1235 aq->aura.pool_addr = pool_id; 1236 aq->aura.pool_caching = 1; 1237 aq->aura.shift = ilog2(numptrs) - 8; 1238 aq->aura.count = numptrs; 1239 aq->aura.limit = numptrs; 1240 aq->aura.avg_level = 255; 1241 aq->aura.ena = 1; 1242 aq->aura.fc_ena = 1; 1243 aq->aura.fc_addr = pool->fc_addr->iova; 1244 aq->aura.fc_hyst_bits = 0; /* Store count on all updates */ 1245 1246 /* Enable backpressure for RQ aura */ 1247 if (aura_id < pfvf->hw.rqpool_cnt && !is_otx2_lbkvf(pfvf->pdev)) { 1248 aq->aura.bp_ena = 0; 1249 /* If NIX1 LF is attached then specify NIX1_RX. 1250 * 1251 * Below NPA_AURA_S[BP_ENA] is set according to the 1252 * NPA_BPINTF_E enumeration given as: 1253 * 0x0 + a*0x1 where 'a' is 0 for NIX0_RX and 1 for NIX1_RX so 1254 * NIX0_RX is 0x0 + 0*0x1 = 0 1255 * NIX1_RX is 0x0 + 1*0x1 = 1 1256 * But in HRM it is given that 1257 * "NPA_AURA_S[BP_ENA](w1[33:32]) - Enable aura backpressure to 1258 * NIX-RX based on [BP] level. One bit per NIX-RX; index 1259 * enumerated by NPA_BPINTF_E." 1260 */ 1261 if (pfvf->nix_blkaddr == BLKADDR_NIX1) 1262 aq->aura.bp_ena = 1; 1263 #ifdef CONFIG_DCB 1264 aq->aura.nix0_bpid = pfvf->bpid[pfvf->queue_to_pfc_map[aura_id]]; 1265 #else 1266 aq->aura.nix0_bpid = pfvf->bpid[0]; 1267 #endif 1268 1269 /* Set backpressure level for RQ's Aura */ 1270 aq->aura.bp = RQ_BP_LVL_AURA; 1271 } 1272 1273 /* Fill AQ info */ 1274 aq->ctype = NPA_AQ_CTYPE_AURA; 1275 aq->op = NPA_AQ_INSTOP_INIT; 1276 1277 return 0; 1278 } 1279 1280 static int otx2_pool_init(struct otx2_nic *pfvf, u16 pool_id, 1281 int stack_pages, int numptrs, int buf_size) 1282 { 1283 struct npa_aq_enq_req *aq; 1284 struct otx2_pool *pool; 1285 int err; 1286 1287 pool = &pfvf->qset.pool[pool_id]; 1288 /* Alloc memory for stack which is used to store buffer pointers */ 1289 err = qmem_alloc(pfvf->dev, &pool->stack, 1290 stack_pages, pfvf->hw.stack_pg_bytes); 1291 if (err) 1292 return err; 1293 1294 pool->rbsize = buf_size; 1295 1296 /* Initialize this pool's context via AF */ 1297 aq = otx2_mbox_alloc_msg_npa_aq_enq(&pfvf->mbox); 1298 if (!aq) { 1299 /* Shared mbox memory buffer is full, flush it and retry */ 1300 err = otx2_sync_mbox_msg(&pfvf->mbox); 1301 if (err) { 1302 qmem_free(pfvf->dev, pool->stack); 1303 return err; 1304 } 1305 aq = otx2_mbox_alloc_msg_npa_aq_enq(&pfvf->mbox); 1306 if (!aq) { 1307 qmem_free(pfvf->dev, pool->stack); 1308 return -ENOMEM; 1309 } 1310 } 1311 1312 aq->aura_id = pool_id; 1313 aq->pool.stack_base = pool->stack->iova; 1314 aq->pool.stack_caching = 1; 1315 aq->pool.ena = 1; 1316 aq->pool.buf_size = buf_size / 128; 1317 aq->pool.stack_max_pages = stack_pages; 1318 aq->pool.shift = ilog2(numptrs) - 8; 1319 aq->pool.ptr_start = 0; 1320 aq->pool.ptr_end = ~0ULL; 1321 1322 /* Fill AQ info */ 1323 aq->ctype = NPA_AQ_CTYPE_POOL; 1324 aq->op = NPA_AQ_INSTOP_INIT; 1325 1326 return 0; 1327 } 1328 1329 int otx2_sq_aura_pool_init(struct otx2_nic *pfvf) 1330 { 1331 int qidx, pool_id, stack_pages, num_sqbs; 1332 struct otx2_qset *qset = &pfvf->qset; 1333 struct otx2_hw *hw = &pfvf->hw; 1334 struct otx2_snd_queue *sq; 1335 struct otx2_pool *pool; 1336 dma_addr_t bufptr; 1337 int err, ptr; 1338 1339 /* Calculate number of SQBs needed. 1340 * 1341 * For a 128byte SQE, and 4K size SQB, 31 SQEs will fit in one SQB. 1342 * Last SQE is used for pointing to next SQB. 1343 */ 1344 num_sqbs = (hw->sqb_size / 128) - 1; 1345 num_sqbs = (qset->sqe_cnt + num_sqbs) / num_sqbs; 1346 1347 /* Get no of stack pages needed */ 1348 stack_pages = 1349 (num_sqbs + hw->stack_pg_ptrs - 1) / hw->stack_pg_ptrs; 1350 1351 for (qidx = 0; qidx < hw->tot_tx_queues; qidx++) { 1352 pool_id = otx2_get_pool_idx(pfvf, AURA_NIX_SQ, qidx); 1353 /* Initialize aura context */ 1354 err = otx2_aura_init(pfvf, pool_id, pool_id, num_sqbs); 1355 if (err) 1356 goto fail; 1357 1358 /* Initialize pool context */ 1359 err = otx2_pool_init(pfvf, pool_id, stack_pages, 1360 num_sqbs, hw->sqb_size); 1361 if (err) 1362 goto fail; 1363 } 1364 1365 /* Flush accumulated messages */ 1366 err = otx2_sync_mbox_msg(&pfvf->mbox); 1367 if (err) 1368 goto fail; 1369 1370 /* Allocate pointers and free them to aura/pool */ 1371 for (qidx = 0; qidx < hw->tot_tx_queues; qidx++) { 1372 pool_id = otx2_get_pool_idx(pfvf, AURA_NIX_SQ, qidx); 1373 pool = &pfvf->qset.pool[pool_id]; 1374 1375 sq = &qset->sq[qidx]; 1376 sq->sqb_count = 0; 1377 sq->sqb_ptrs = kcalloc(num_sqbs, sizeof(*sq->sqb_ptrs), GFP_KERNEL); 1378 if (!sq->sqb_ptrs) 1379 return -ENOMEM; 1380 1381 for (ptr = 0; ptr < num_sqbs; ptr++) { 1382 if (otx2_alloc_rbuf(pfvf, pool, &bufptr)) 1383 return -ENOMEM; 1384 pfvf->hw_ops->aura_freeptr(pfvf, pool_id, bufptr); 1385 sq->sqb_ptrs[sq->sqb_count++] = (u64)bufptr; 1386 } 1387 } 1388 1389 return 0; 1390 fail: 1391 otx2_mbox_reset(&pfvf->mbox.mbox, 0); 1392 otx2_aura_pool_free(pfvf); 1393 return err; 1394 } 1395 1396 int otx2_rq_aura_pool_init(struct otx2_nic *pfvf) 1397 { 1398 struct otx2_hw *hw = &pfvf->hw; 1399 int stack_pages, pool_id, rq; 1400 struct otx2_pool *pool; 1401 int err, ptr, num_ptrs; 1402 dma_addr_t bufptr; 1403 1404 num_ptrs = pfvf->qset.rqe_cnt; 1405 1406 stack_pages = 1407 (num_ptrs + hw->stack_pg_ptrs - 1) / hw->stack_pg_ptrs; 1408 1409 for (rq = 0; rq < hw->rx_queues; rq++) { 1410 pool_id = otx2_get_pool_idx(pfvf, AURA_NIX_RQ, rq); 1411 /* Initialize aura context */ 1412 err = otx2_aura_init(pfvf, pool_id, pool_id, num_ptrs); 1413 if (err) 1414 goto fail; 1415 } 1416 for (pool_id = 0; pool_id < hw->rqpool_cnt; pool_id++) { 1417 err = otx2_pool_init(pfvf, pool_id, stack_pages, 1418 num_ptrs, pfvf->rbsize); 1419 if (err) 1420 goto fail; 1421 } 1422 1423 /* Flush accumulated messages */ 1424 err = otx2_sync_mbox_msg(&pfvf->mbox); 1425 if (err) 1426 goto fail; 1427 1428 /* Allocate pointers and free them to aura/pool */ 1429 for (pool_id = 0; pool_id < hw->rqpool_cnt; pool_id++) { 1430 pool = &pfvf->qset.pool[pool_id]; 1431 for (ptr = 0; ptr < num_ptrs; ptr++) { 1432 if (otx2_alloc_rbuf(pfvf, pool, &bufptr)) 1433 return -ENOMEM; 1434 pfvf->hw_ops->aura_freeptr(pfvf, pool_id, 1435 bufptr + OTX2_HEAD_ROOM); 1436 } 1437 } 1438 1439 return 0; 1440 fail: 1441 otx2_mbox_reset(&pfvf->mbox.mbox, 0); 1442 otx2_aura_pool_free(pfvf); 1443 return err; 1444 } 1445 1446 int otx2_config_npa(struct otx2_nic *pfvf) 1447 { 1448 struct otx2_qset *qset = &pfvf->qset; 1449 struct npa_lf_alloc_req *npalf; 1450 struct otx2_hw *hw = &pfvf->hw; 1451 int aura_cnt; 1452 1453 /* Pool - Stack of free buffer pointers 1454 * Aura - Alloc/frees pointers from/to pool for NIX DMA. 1455 */ 1456 1457 if (!hw->pool_cnt) 1458 return -EINVAL; 1459 1460 qset->pool = devm_kcalloc(pfvf->dev, hw->pool_cnt, 1461 sizeof(struct otx2_pool), GFP_KERNEL); 1462 if (!qset->pool) 1463 return -ENOMEM; 1464 1465 /* Get memory to put this msg */ 1466 npalf = otx2_mbox_alloc_msg_npa_lf_alloc(&pfvf->mbox); 1467 if (!npalf) 1468 return -ENOMEM; 1469 1470 /* Set aura and pool counts */ 1471 npalf->nr_pools = hw->pool_cnt; 1472 aura_cnt = ilog2(roundup_pow_of_two(hw->pool_cnt)); 1473 npalf->aura_sz = (aura_cnt >= ilog2(128)) ? (aura_cnt - 6) : 1; 1474 1475 return otx2_sync_mbox_msg(&pfvf->mbox); 1476 } 1477 1478 int otx2_detach_resources(struct mbox *mbox) 1479 { 1480 struct rsrc_detach *detach; 1481 1482 mutex_lock(&mbox->lock); 1483 detach = otx2_mbox_alloc_msg_detach_resources(mbox); 1484 if (!detach) { 1485 mutex_unlock(&mbox->lock); 1486 return -ENOMEM; 1487 } 1488 1489 /* detach all */ 1490 detach->partial = false; 1491 1492 /* Send detach request to AF */ 1493 otx2_mbox_msg_send(&mbox->mbox, 0); 1494 mutex_unlock(&mbox->lock); 1495 return 0; 1496 } 1497 EXPORT_SYMBOL(otx2_detach_resources); 1498 1499 int otx2_attach_npa_nix(struct otx2_nic *pfvf) 1500 { 1501 struct rsrc_attach *attach; 1502 struct msg_req *msix; 1503 int err; 1504 1505 mutex_lock(&pfvf->mbox.lock); 1506 /* Get memory to put this msg */ 1507 attach = otx2_mbox_alloc_msg_attach_resources(&pfvf->mbox); 1508 if (!attach) { 1509 mutex_unlock(&pfvf->mbox.lock); 1510 return -ENOMEM; 1511 } 1512 1513 attach->npalf = true; 1514 attach->nixlf = true; 1515 1516 /* Send attach request to AF */ 1517 err = otx2_sync_mbox_msg(&pfvf->mbox); 1518 if (err) { 1519 mutex_unlock(&pfvf->mbox.lock); 1520 return err; 1521 } 1522 1523 pfvf->nix_blkaddr = BLKADDR_NIX0; 1524 1525 /* If the platform has two NIX blocks then LF may be 1526 * allocated from NIX1. 1527 */ 1528 if (otx2_read64(pfvf, RVU_PF_BLOCK_ADDRX_DISC(BLKADDR_NIX1)) & 0x1FFULL) 1529 pfvf->nix_blkaddr = BLKADDR_NIX1; 1530 1531 /* Get NPA and NIX MSIX vector offsets */ 1532 msix = otx2_mbox_alloc_msg_msix_offset(&pfvf->mbox); 1533 if (!msix) { 1534 mutex_unlock(&pfvf->mbox.lock); 1535 return -ENOMEM; 1536 } 1537 1538 err = otx2_sync_mbox_msg(&pfvf->mbox); 1539 if (err) { 1540 mutex_unlock(&pfvf->mbox.lock); 1541 return err; 1542 } 1543 mutex_unlock(&pfvf->mbox.lock); 1544 1545 if (pfvf->hw.npa_msixoff == MSIX_VECTOR_INVALID || 1546 pfvf->hw.nix_msixoff == MSIX_VECTOR_INVALID) { 1547 dev_err(pfvf->dev, 1548 "RVUPF: Invalid MSIX vector offset for NPA/NIX\n"); 1549 return -EINVAL; 1550 } 1551 1552 return 0; 1553 } 1554 EXPORT_SYMBOL(otx2_attach_npa_nix); 1555 1556 void otx2_ctx_disable(struct mbox *mbox, int type, bool npa) 1557 { 1558 struct hwctx_disable_req *req; 1559 1560 mutex_lock(&mbox->lock); 1561 /* Request AQ to disable this context */ 1562 if (npa) 1563 req = otx2_mbox_alloc_msg_npa_hwctx_disable(mbox); 1564 else 1565 req = otx2_mbox_alloc_msg_nix_hwctx_disable(mbox); 1566 1567 if (!req) { 1568 mutex_unlock(&mbox->lock); 1569 return; 1570 } 1571 1572 req->ctype = type; 1573 1574 if (otx2_sync_mbox_msg(mbox)) 1575 dev_err(mbox->pfvf->dev, "%s failed to disable context\n", 1576 __func__); 1577 1578 mutex_unlock(&mbox->lock); 1579 } 1580 1581 int otx2_nix_config_bp(struct otx2_nic *pfvf, bool enable) 1582 { 1583 struct nix_bp_cfg_req *req; 1584 1585 if (enable) 1586 req = otx2_mbox_alloc_msg_nix_bp_enable(&pfvf->mbox); 1587 else 1588 req = otx2_mbox_alloc_msg_nix_bp_disable(&pfvf->mbox); 1589 1590 if (!req) 1591 return -ENOMEM; 1592 1593 req->chan_base = 0; 1594 #ifdef CONFIG_DCB 1595 req->chan_cnt = pfvf->pfc_en ? IEEE_8021QAZ_MAX_TCS : 1; 1596 req->bpid_per_chan = pfvf->pfc_en ? 1 : 0; 1597 #else 1598 req->chan_cnt = 1; 1599 req->bpid_per_chan = 0; 1600 #endif 1601 1602 1603 return otx2_sync_mbox_msg(&pfvf->mbox); 1604 } 1605 EXPORT_SYMBOL(otx2_nix_config_bp); 1606 1607 /* Mbox message handlers */ 1608 void mbox_handler_cgx_stats(struct otx2_nic *pfvf, 1609 struct cgx_stats_rsp *rsp) 1610 { 1611 int id; 1612 1613 for (id = 0; id < CGX_RX_STATS_COUNT; id++) 1614 pfvf->hw.cgx_rx_stats[id] = rsp->rx_stats[id]; 1615 for (id = 0; id < CGX_TX_STATS_COUNT; id++) 1616 pfvf->hw.cgx_tx_stats[id] = rsp->tx_stats[id]; 1617 } 1618 1619 void mbox_handler_cgx_fec_stats(struct otx2_nic *pfvf, 1620 struct cgx_fec_stats_rsp *rsp) 1621 { 1622 pfvf->hw.cgx_fec_corr_blks += rsp->fec_corr_blks; 1623 pfvf->hw.cgx_fec_uncorr_blks += rsp->fec_uncorr_blks; 1624 } 1625 1626 void mbox_handler_nix_txsch_alloc(struct otx2_nic *pf, 1627 struct nix_txsch_alloc_rsp *rsp) 1628 { 1629 int lvl, schq; 1630 1631 /* Setup transmit scheduler list */ 1632 for (lvl = 0; lvl < NIX_TXSCH_LVL_CNT; lvl++) 1633 for (schq = 0; schq < rsp->schq[lvl]; schq++) 1634 pf->hw.txschq_list[lvl][schq] = 1635 rsp->schq_list[lvl][schq]; 1636 1637 pf->hw.txschq_link_cfg_lvl = rsp->link_cfg_lvl; 1638 } 1639 EXPORT_SYMBOL(mbox_handler_nix_txsch_alloc); 1640 1641 void mbox_handler_npa_lf_alloc(struct otx2_nic *pfvf, 1642 struct npa_lf_alloc_rsp *rsp) 1643 { 1644 pfvf->hw.stack_pg_ptrs = rsp->stack_pg_ptrs; 1645 pfvf->hw.stack_pg_bytes = rsp->stack_pg_bytes; 1646 } 1647 EXPORT_SYMBOL(mbox_handler_npa_lf_alloc); 1648 1649 void mbox_handler_nix_lf_alloc(struct otx2_nic *pfvf, 1650 struct nix_lf_alloc_rsp *rsp) 1651 { 1652 pfvf->hw.sqb_size = rsp->sqb_size; 1653 pfvf->hw.rx_chan_base = rsp->rx_chan_base; 1654 pfvf->hw.tx_chan_base = rsp->tx_chan_base; 1655 pfvf->hw.lso_tsov4_idx = rsp->lso_tsov4_idx; 1656 pfvf->hw.lso_tsov6_idx = rsp->lso_tsov6_idx; 1657 pfvf->hw.cgx_links = rsp->cgx_links; 1658 pfvf->hw.lbk_links = rsp->lbk_links; 1659 pfvf->hw.tx_link = rsp->tx_link; 1660 } 1661 EXPORT_SYMBOL(mbox_handler_nix_lf_alloc); 1662 1663 void mbox_handler_msix_offset(struct otx2_nic *pfvf, 1664 struct msix_offset_rsp *rsp) 1665 { 1666 pfvf->hw.npa_msixoff = rsp->npa_msixoff; 1667 pfvf->hw.nix_msixoff = rsp->nix_msixoff; 1668 } 1669 EXPORT_SYMBOL(mbox_handler_msix_offset); 1670 1671 void mbox_handler_nix_bp_enable(struct otx2_nic *pfvf, 1672 struct nix_bp_cfg_rsp *rsp) 1673 { 1674 int chan, chan_id; 1675 1676 for (chan = 0; chan < rsp->chan_cnt; chan++) { 1677 chan_id = ((rsp->chan_bpid[chan] >> 10) & 0x7F); 1678 pfvf->bpid[chan_id] = rsp->chan_bpid[chan] & 0x3FF; 1679 } 1680 } 1681 EXPORT_SYMBOL(mbox_handler_nix_bp_enable); 1682 1683 void otx2_free_cints(struct otx2_nic *pfvf, int n) 1684 { 1685 struct otx2_qset *qset = &pfvf->qset; 1686 struct otx2_hw *hw = &pfvf->hw; 1687 int irq, qidx; 1688 1689 for (qidx = 0, irq = hw->nix_msixoff + NIX_LF_CINT_VEC_START; 1690 qidx < n; 1691 qidx++, irq++) { 1692 int vector = pci_irq_vector(pfvf->pdev, irq); 1693 1694 irq_set_affinity_hint(vector, NULL); 1695 free_cpumask_var(hw->affinity_mask[irq]); 1696 free_irq(vector, &qset->napi[qidx]); 1697 } 1698 } 1699 1700 void otx2_set_cints_affinity(struct otx2_nic *pfvf) 1701 { 1702 struct otx2_hw *hw = &pfvf->hw; 1703 int vec, cpu, irq, cint; 1704 1705 vec = hw->nix_msixoff + NIX_LF_CINT_VEC_START; 1706 cpu = cpumask_first(cpu_online_mask); 1707 1708 /* CQ interrupts */ 1709 for (cint = 0; cint < pfvf->hw.cint_cnt; cint++, vec++) { 1710 if (!alloc_cpumask_var(&hw->affinity_mask[vec], GFP_KERNEL)) 1711 return; 1712 1713 cpumask_set_cpu(cpu, hw->affinity_mask[vec]); 1714 1715 irq = pci_irq_vector(pfvf->pdev, vec); 1716 irq_set_affinity_hint(irq, hw->affinity_mask[vec]); 1717 1718 cpu = cpumask_next(cpu, cpu_online_mask); 1719 if (unlikely(cpu >= nr_cpu_ids)) 1720 cpu = 0; 1721 } 1722 } 1723 1724 u16 otx2_get_max_mtu(struct otx2_nic *pfvf) 1725 { 1726 struct nix_hw_info *rsp; 1727 struct msg_req *req; 1728 u16 max_mtu; 1729 int rc; 1730 1731 mutex_lock(&pfvf->mbox.lock); 1732 1733 req = otx2_mbox_alloc_msg_nix_get_hw_info(&pfvf->mbox); 1734 if (!req) { 1735 rc = -ENOMEM; 1736 goto out; 1737 } 1738 1739 rc = otx2_sync_mbox_msg(&pfvf->mbox); 1740 if (!rc) { 1741 rsp = (struct nix_hw_info *) 1742 otx2_mbox_get_rsp(&pfvf->mbox.mbox, 0, &req->hdr); 1743 1744 /* HW counts VLAN insertion bytes (8 for double tag) 1745 * irrespective of whether SQE is requesting to insert VLAN 1746 * in the packet or not. Hence these 8 bytes have to be 1747 * discounted from max packet size otherwise HW will throw 1748 * SMQ errors 1749 */ 1750 max_mtu = rsp->max_mtu - 8 - OTX2_ETH_HLEN; 1751 1752 /* Also save DWRR MTU, needed for DWRR weight calculation */ 1753 pfvf->hw.dwrr_mtu = rsp->rpm_dwrr_mtu; 1754 if (!pfvf->hw.dwrr_mtu) 1755 pfvf->hw.dwrr_mtu = 1; 1756 } 1757 1758 out: 1759 mutex_unlock(&pfvf->mbox.lock); 1760 if (rc) { 1761 dev_warn(pfvf->dev, 1762 "Failed to get MTU from hardware setting default value(1500)\n"); 1763 max_mtu = 1500; 1764 } 1765 return max_mtu; 1766 } 1767 EXPORT_SYMBOL(otx2_get_max_mtu); 1768 1769 int otx2_handle_ntuple_tc_features(struct net_device *netdev, netdev_features_t features) 1770 { 1771 netdev_features_t changed = features ^ netdev->features; 1772 struct otx2_nic *pfvf = netdev_priv(netdev); 1773 bool ntuple = !!(features & NETIF_F_NTUPLE); 1774 bool tc = !!(features & NETIF_F_HW_TC); 1775 1776 if ((changed & NETIF_F_NTUPLE) && !ntuple) 1777 otx2_destroy_ntuple_flows(pfvf); 1778 1779 if ((changed & NETIF_F_NTUPLE) && ntuple) { 1780 if (!pfvf->flow_cfg->max_flows) { 1781 netdev_err(netdev, 1782 "Can't enable NTUPLE, MCAM entries not allocated\n"); 1783 return -EINVAL; 1784 } 1785 } 1786 1787 if ((changed & NETIF_F_HW_TC) && tc) { 1788 if (!pfvf->flow_cfg->max_flows) { 1789 netdev_err(netdev, 1790 "Can't enable TC, MCAM entries not allocated\n"); 1791 return -EINVAL; 1792 } 1793 } 1794 1795 if ((changed & NETIF_F_HW_TC) && !tc && 1796 pfvf->flow_cfg && pfvf->flow_cfg->nr_flows) { 1797 netdev_err(netdev, "Can't disable TC hardware offload while flows are active\n"); 1798 return -EBUSY; 1799 } 1800 1801 if ((changed & NETIF_F_NTUPLE) && ntuple && 1802 (netdev->features & NETIF_F_HW_TC) && !(changed & NETIF_F_HW_TC)) { 1803 netdev_err(netdev, 1804 "Can't enable NTUPLE when TC is active, disable TC and retry\n"); 1805 return -EINVAL; 1806 } 1807 1808 if ((changed & NETIF_F_HW_TC) && tc && 1809 (netdev->features & NETIF_F_NTUPLE) && !(changed & NETIF_F_NTUPLE)) { 1810 netdev_err(netdev, 1811 "Can't enable TC when NTUPLE is active, disable NTUPLE and retry\n"); 1812 return -EINVAL; 1813 } 1814 1815 return 0; 1816 } 1817 EXPORT_SYMBOL(otx2_handle_ntuple_tc_features); 1818 1819 #define M(_name, _id, _fn_name, _req_type, _rsp_type) \ 1820 int __weak \ 1821 otx2_mbox_up_handler_ ## _fn_name(struct otx2_nic *pfvf, \ 1822 struct _req_type *req, \ 1823 struct _rsp_type *rsp) \ 1824 { \ 1825 /* Nothing to do here */ \ 1826 return 0; \ 1827 } \ 1828 EXPORT_SYMBOL(otx2_mbox_up_handler_ ## _fn_name); 1829 MBOX_UP_CGX_MESSAGES 1830 MBOX_UP_MCS_MESSAGES 1831 #undef M 1832