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