1 /* 2 * Copyright 2008-2014 Cisco Systems, Inc. All rights reserved. 3 * Copyright 2007 Nuova Systems, Inc. All rights reserved. 4 * 5 * Copyright (c) 2014, Cisco Systems, Inc. 6 * All rights reserved. 7 * 8 * Redistribution and use in source and binary forms, with or without 9 * modification, are permitted provided that the following conditions 10 * are met: 11 * 12 * 1. Redistributions of source code must retain the above copyright 13 * notice, this list of conditions and the following disclaimer. 14 * 15 * 2. Redistributions in binary form must reproduce the above copyright 16 * notice, this list of conditions and the following disclaimer in 17 * the documentation and/or other materials provided with the 18 * distribution. 19 * 20 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 21 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 22 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS 23 * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE 24 * COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, 25 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, 26 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 27 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER 28 * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 29 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN 30 * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 31 * POSSIBILITY OF SUCH DAMAGE. 32 * 33 */ 34 35 #include <stdio.h> 36 37 #include <sys/stat.h> 38 #include <sys/mman.h> 39 #include <fcntl.h> 40 #include <libgen.h> 41 42 #include <rte_pci.h> 43 #include <rte_memzone.h> 44 #include <rte_malloc.h> 45 #include <rte_mbuf.h> 46 #include <rte_string_fns.h> 47 #include <rte_ethdev.h> 48 49 #include "enic_compat.h" 50 #include "enic.h" 51 #include "wq_enet_desc.h" 52 #include "rq_enet_desc.h" 53 #include "cq_enet_desc.h" 54 #include "vnic_enet.h" 55 #include "vnic_dev.h" 56 #include "vnic_wq.h" 57 #include "vnic_rq.h" 58 #include "vnic_cq.h" 59 #include "vnic_intr.h" 60 #include "vnic_nic.h" 61 #include "enic_vnic_wq.h" 62 63 static inline int enic_is_sriov_vf(struct enic *enic) 64 { 65 return enic->pdev->id.device_id == PCI_DEVICE_ID_CISCO_VIC_ENET_VF; 66 } 67 68 static int is_zero_addr(uint8_t *addr) 69 { 70 return !(addr[0] | addr[1] | addr[2] | addr[3] | addr[4] | addr[5]); 71 } 72 73 static int is_mcast_addr(uint8_t *addr) 74 { 75 return addr[0] & 1; 76 } 77 78 static int is_eth_addr_valid(uint8_t *addr) 79 { 80 return !is_mcast_addr(addr) && !is_zero_addr(addr); 81 } 82 83 static inline struct rte_mbuf * 84 enic_rxmbuf_alloc(struct rte_mempool *mp) 85 { 86 struct rte_mbuf *m; 87 88 m = __rte_mbuf_raw_alloc(mp); 89 __rte_mbuf_sanity_check_raw(m, 0); 90 return m; 91 } 92 93 void enic_set_hdr_split_size(struct enic *enic, u16 split_hdr_size) 94 { 95 vnic_set_hdr_split_size(enic->vdev, split_hdr_size); 96 } 97 98 static void enic_free_wq_buf(__rte_unused struct vnic_wq *wq, struct vnic_wq_buf *buf) 99 { 100 struct rte_mbuf *mbuf = (struct rte_mbuf *)buf->os_buf; 101 102 rte_mempool_put(mbuf->pool, mbuf); 103 buf->os_buf = NULL; 104 } 105 106 static void enic_wq_free_buf(struct vnic_wq *wq, 107 __rte_unused struct cq_desc *cq_desc, 108 struct vnic_wq_buf *buf, 109 __rte_unused void *opaque) 110 { 111 enic_free_wq_buf(wq, buf); 112 } 113 114 static int enic_wq_service(struct vnic_dev *vdev, struct cq_desc *cq_desc, 115 __rte_unused u8 type, u16 q_number, u16 completed_index, void *opaque) 116 { 117 struct enic *enic = vnic_dev_priv(vdev); 118 119 vnic_wq_service(&enic->wq[q_number], cq_desc, 120 completed_index, enic_wq_free_buf, 121 opaque); 122 123 return 0; 124 } 125 126 static void enic_log_q_error(struct enic *enic) 127 { 128 unsigned int i; 129 u32 error_status; 130 131 for (i = 0; i < enic->wq_count; i++) { 132 error_status = vnic_wq_error_status(&enic->wq[i]); 133 if (error_status) 134 dev_err(enic, "WQ[%d] error_status %d\n", i, 135 error_status); 136 } 137 138 for (i = 0; i < enic->rq_count; i++) { 139 error_status = vnic_rq_error_status(&enic->rq[i]); 140 if (error_status) 141 dev_err(enic, "RQ[%d] error_status %d\n", i, 142 error_status); 143 } 144 } 145 146 unsigned int enic_cleanup_wq(struct enic *enic, struct vnic_wq *wq) 147 { 148 unsigned int cq = enic_cq_wq(enic, wq->index); 149 150 /* Return the work done */ 151 return vnic_cq_service(&enic->cq[cq], 152 -1 /*wq_work_to_do*/, enic_wq_service, NULL); 153 } 154 155 void enic_post_wq_index(struct vnic_wq *wq) 156 { 157 enic_vnic_post_wq_index(wq); 158 } 159 160 void enic_send_pkt(struct enic *enic, struct vnic_wq *wq, 161 struct rte_mbuf *tx_pkt, unsigned short len, 162 uint8_t sop, uint8_t eop, uint8_t cq_entry, 163 uint16_t ol_flags, uint16_t vlan_tag) 164 { 165 struct wq_enet_desc *desc = vnic_wq_next_desc(wq); 166 uint16_t mss = 0; 167 uint8_t vlan_tag_insert = 0; 168 uint64_t bus_addr = (dma_addr_t) 169 (tx_pkt->buf_physaddr + RTE_PKTMBUF_HEADROOM); 170 171 if (sop) { 172 if (ol_flags & PKT_TX_VLAN_PKT) 173 vlan_tag_insert = 1; 174 175 if (enic->hw_ip_checksum) { 176 if (ol_flags & PKT_TX_IP_CKSUM) 177 mss |= ENIC_CALC_IP_CKSUM; 178 179 if (ol_flags & PKT_TX_TCP_UDP_CKSUM) 180 mss |= ENIC_CALC_TCP_UDP_CKSUM; 181 } 182 } 183 184 wq_enet_desc_enc(desc, 185 bus_addr, 186 len, 187 mss, 188 0 /* header_length */, 189 0 /* offload_mode WQ_ENET_OFFLOAD_MODE_CSUM */, 190 eop, 191 cq_entry, 192 0 /* fcoe_encap */, 193 vlan_tag_insert, 194 vlan_tag, 195 0 /* loopback */); 196 197 enic_vnic_post_wq(wq, (void *)tx_pkt, bus_addr, len, 198 sop, 199 1 /*desc_skip_cnt*/, 200 cq_entry, 201 0 /*compressed send*/, 202 0 /*wrid*/); 203 } 204 205 void enic_dev_stats_clear(struct enic *enic) 206 { 207 if (vnic_dev_stats_clear(enic->vdev)) 208 dev_err(enic, "Error in clearing stats\n"); 209 } 210 211 void enic_dev_stats_get(struct enic *enic, struct rte_eth_stats *r_stats) 212 { 213 struct vnic_stats *stats; 214 215 if (vnic_dev_stats_dump(enic->vdev, &stats)) { 216 dev_err(enic, "Error in getting stats\n"); 217 return; 218 } 219 220 r_stats->ipackets = stats->rx.rx_frames_ok; 221 r_stats->opackets = stats->tx.tx_frames_ok; 222 223 r_stats->ibytes = stats->rx.rx_bytes_ok; 224 r_stats->obytes = stats->tx.tx_bytes_ok; 225 226 r_stats->ierrors = stats->rx.rx_errors; 227 r_stats->oerrors = stats->tx.tx_errors; 228 229 r_stats->imcasts = stats->rx.rx_multicast_frames_ok; 230 r_stats->rx_nombuf = stats->rx.rx_no_bufs; 231 } 232 233 void enic_del_mac_address(struct enic *enic) 234 { 235 if (vnic_dev_del_addr(enic->vdev, enic->mac_addr)) 236 dev_err(enic, "del mac addr failed\n"); 237 } 238 239 void enic_set_mac_address(struct enic *enic, uint8_t *mac_addr) 240 { 241 int err; 242 243 if (!is_eth_addr_valid(mac_addr)) { 244 dev_err(enic, "invalid mac address\n"); 245 return; 246 } 247 248 err = vnic_dev_del_addr(enic->vdev, mac_addr); 249 if (err) { 250 dev_err(enic, "del mac addr failed\n"); 251 return; 252 } 253 254 ether_addr_copy((struct ether_addr *)mac_addr, 255 (struct ether_addr *)enic->mac_addr); 256 257 err = vnic_dev_add_addr(enic->vdev, mac_addr); 258 if (err) { 259 dev_err(enic, "add mac addr failed\n"); 260 return; 261 } 262 } 263 264 static void 265 enic_free_rq_buf(__rte_unused struct vnic_rq *rq, struct vnic_rq_buf *buf) 266 { 267 if (!buf->os_buf) 268 return; 269 270 rte_pktmbuf_free((struct rte_mbuf *)buf->os_buf); 271 buf->os_buf = NULL; 272 } 273 274 void enic_init_vnic_resources(struct enic *enic) 275 { 276 unsigned int error_interrupt_enable = 1; 277 unsigned int error_interrupt_offset = 0; 278 unsigned int index = 0; 279 280 for (index = 0; index < enic->rq_count; index++) { 281 vnic_rq_init(&enic->rq[index], 282 enic_cq_rq(enic, index), 283 error_interrupt_enable, 284 error_interrupt_offset); 285 } 286 287 for (index = 0; index < enic->wq_count; index++) { 288 vnic_wq_init(&enic->wq[index], 289 enic_cq_wq(enic, index), 290 error_interrupt_enable, 291 error_interrupt_offset); 292 } 293 294 vnic_dev_stats_clear(enic->vdev); 295 296 for (index = 0; index < enic->cq_count; index++) { 297 vnic_cq_init(&enic->cq[index], 298 0 /* flow_control_enable */, 299 1 /* color_enable */, 300 0 /* cq_head */, 301 0 /* cq_tail */, 302 1 /* cq_tail_color */, 303 0 /* interrupt_enable */, 304 1 /* cq_entry_enable */, 305 0 /* cq_message_enable */, 306 0 /* interrupt offset */, 307 0 /* cq_message_addr */); 308 } 309 310 vnic_intr_init(&enic->intr, 311 enic->config.intr_timer_usec, 312 enic->config.intr_timer_type, 313 /*mask_on_assertion*/1); 314 } 315 316 317 static int enic_rq_alloc_buf(struct vnic_rq *rq) 318 { 319 struct enic *enic = vnic_dev_priv(rq->vdev); 320 dma_addr_t dma_addr; 321 struct rq_enet_desc *desc = vnic_rq_next_desc(rq); 322 uint8_t type = RQ_ENET_TYPE_ONLY_SOP; 323 u16 split_hdr_size = vnic_get_hdr_split_size(enic->vdev); 324 struct rte_mbuf *mbuf = enic_rxmbuf_alloc(rq->mp); 325 struct rte_mbuf *hdr_mbuf = NULL; 326 327 if (!mbuf) { 328 dev_err(enic, "mbuf alloc in enic_rq_alloc_buf failed\n"); 329 return -1; 330 } 331 332 if (unlikely(split_hdr_size)) { 333 if (vnic_rq_desc_avail(rq) < 2) { 334 rte_mempool_put(mbuf->pool, mbuf); 335 return -1; 336 } 337 hdr_mbuf = enic_rxmbuf_alloc(rq->mp); 338 if (!hdr_mbuf) { 339 rte_mempool_put(mbuf->pool, mbuf); 340 dev_err(enic, 341 "hdr_mbuf alloc in enic_rq_alloc_buf failed\n"); 342 return -1; 343 } 344 345 hdr_mbuf->data_off = RTE_PKTMBUF_HEADROOM; 346 347 hdr_mbuf->nb_segs = 2; 348 hdr_mbuf->port = enic->port_id; 349 hdr_mbuf->next = mbuf; 350 351 dma_addr = (dma_addr_t) 352 (hdr_mbuf->buf_physaddr + hdr_mbuf->data_off); 353 354 rq_enet_desc_enc(desc, dma_addr, type, split_hdr_size); 355 356 vnic_rq_post(rq, (void *)hdr_mbuf, 0 /*os_buf_index*/, dma_addr, 357 (unsigned int)split_hdr_size, 0 /*wrid*/); 358 359 desc = vnic_rq_next_desc(rq); 360 type = RQ_ENET_TYPE_NOT_SOP; 361 } else { 362 mbuf->nb_segs = 1; 363 mbuf->port = enic->port_id; 364 } 365 366 mbuf->data_off = RTE_PKTMBUF_HEADROOM; 367 mbuf->next = NULL; 368 369 dma_addr = (dma_addr_t) 370 (mbuf->buf_physaddr + mbuf->data_off); 371 372 rq_enet_desc_enc(desc, dma_addr, type, mbuf->buf_len); 373 374 vnic_rq_post(rq, (void *)mbuf, 0 /*os_buf_index*/, dma_addr, 375 (unsigned int)mbuf->buf_len, 0 /*wrid*/); 376 377 return 0; 378 } 379 380 static int enic_rq_indicate_buf(struct vnic_rq *rq, 381 struct cq_desc *cq_desc, struct vnic_rq_buf *buf, 382 int skipped, void *opaque) 383 { 384 struct enic *enic = vnic_dev_priv(rq->vdev); 385 struct rte_mbuf **rx_pkt_bucket = (struct rte_mbuf **)opaque; 386 struct rte_mbuf *rx_pkt = NULL; 387 struct rte_mbuf *hdr_rx_pkt = NULL; 388 389 u8 type, color, eop, sop, ingress_port, vlan_stripped; 390 u8 fcoe, fcoe_sof, fcoe_fc_crc_ok, fcoe_enc_error, fcoe_eof; 391 u8 tcp_udp_csum_ok, udp, tcp, ipv4_csum_ok; 392 u8 ipv6, ipv4, ipv4_fragment, fcs_ok, rss_type, csum_not_calc; 393 u8 packet_error; 394 u16 q_number, completed_index, bytes_written, vlan_tci, checksum; 395 u32 rss_hash; 396 397 cq_enet_rq_desc_dec((struct cq_enet_rq_desc *)cq_desc, 398 &type, &color, &q_number, &completed_index, 399 &ingress_port, &fcoe, &eop, &sop, &rss_type, 400 &csum_not_calc, &rss_hash, &bytes_written, 401 &packet_error, &vlan_stripped, &vlan_tci, &checksum, 402 &fcoe_sof, &fcoe_fc_crc_ok, &fcoe_enc_error, 403 &fcoe_eof, &tcp_udp_csum_ok, &udp, &tcp, 404 &ipv4_csum_ok, &ipv6, &ipv4, &ipv4_fragment, 405 &fcs_ok); 406 407 rx_pkt = (struct rte_mbuf *)buf->os_buf; 408 buf->os_buf = NULL; 409 410 if (unlikely(packet_error)) { 411 dev_err(enic, "packet error\n"); 412 rx_pkt->data_len = 0; 413 return 0; 414 } 415 416 if (unlikely(skipped)) { 417 rx_pkt->data_len = 0; 418 return 0; 419 } 420 421 if (likely(!vnic_get_hdr_split_size(enic->vdev))) { 422 /* No header split configured */ 423 *rx_pkt_bucket = rx_pkt; 424 rx_pkt->pkt_len = bytes_written; 425 426 if (ipv4) { 427 rx_pkt->packet_type = RTE_PTYPE_L3_IPV4; 428 if (!csum_not_calc) { 429 if (unlikely(!ipv4_csum_ok)) 430 rx_pkt->ol_flags |= PKT_RX_IP_CKSUM_BAD; 431 432 if ((tcp || udp) && (!tcp_udp_csum_ok)) 433 rx_pkt->ol_flags |= PKT_RX_L4_CKSUM_BAD; 434 } 435 } else if (ipv6) 436 rx_pkt->packet_type = RTE_PTYPE_L3_IPV6; 437 } else { 438 /* Header split */ 439 if (sop && !eop) { 440 /* This piece is header */ 441 *rx_pkt_bucket = rx_pkt; 442 rx_pkt->pkt_len = bytes_written; 443 } else { 444 if (sop && eop) { 445 /* The packet is smaller than split_hdr_size */ 446 *rx_pkt_bucket = rx_pkt; 447 rx_pkt->pkt_len = bytes_written; 448 if (ipv4) { 449 rx_pkt->packet_type = RTE_PTYPE_L3_IPV4; 450 if (!csum_not_calc) { 451 if (unlikely(!ipv4_csum_ok)) 452 rx_pkt->ol_flags |= 453 PKT_RX_IP_CKSUM_BAD; 454 455 if ((tcp || udp) && 456 (!tcp_udp_csum_ok)) 457 rx_pkt->ol_flags |= 458 PKT_RX_L4_CKSUM_BAD; 459 } 460 } else if (ipv6) 461 rx_pkt->packet_type = RTE_PTYPE_L3_IPV6; 462 } else { 463 /* Payload */ 464 hdr_rx_pkt = *rx_pkt_bucket; 465 hdr_rx_pkt->pkt_len += bytes_written; 466 if (ipv4) { 467 hdr_rx_pkt->packet_type = 468 RTE_PTYPE_L3_IPV4; 469 if (!csum_not_calc) { 470 if (unlikely(!ipv4_csum_ok)) 471 hdr_rx_pkt->ol_flags |= 472 PKT_RX_IP_CKSUM_BAD; 473 474 if ((tcp || udp) && 475 (!tcp_udp_csum_ok)) 476 hdr_rx_pkt->ol_flags |= 477 PKT_RX_L4_CKSUM_BAD; 478 } 479 } else if (ipv6) 480 hdr_rx_pkt->packet_type = 481 RTE_PTYPE_L3_IPV6; 482 } 483 } 484 } 485 486 rx_pkt->data_len = bytes_written; 487 488 if (rss_hash) { 489 rx_pkt->ol_flags |= PKT_RX_RSS_HASH; 490 rx_pkt->hash.rss = rss_hash; 491 } 492 493 if (vlan_tci) { 494 rx_pkt->ol_flags |= PKT_RX_VLAN_PKT; 495 rx_pkt->vlan_tci = vlan_tci; 496 } 497 498 return eop; 499 } 500 501 static int enic_rq_service(struct vnic_dev *vdev, struct cq_desc *cq_desc, 502 __rte_unused u8 type, u16 q_number, u16 completed_index, void *opaque) 503 { 504 struct enic *enic = vnic_dev_priv(vdev); 505 506 return vnic_rq_service(&enic->rq[q_number], cq_desc, 507 completed_index, VNIC_RQ_RETURN_DESC, 508 enic_rq_indicate_buf, opaque); 509 510 } 511 512 int enic_poll(struct vnic_rq *rq, struct rte_mbuf **rx_pkts, 513 unsigned int budget, unsigned int *work_done) 514 { 515 struct enic *enic = vnic_dev_priv(rq->vdev); 516 unsigned int cq = enic_cq_rq(enic, rq->index); 517 int err = 0; 518 519 *work_done = vnic_cq_service(&enic->cq[cq], 520 budget, enic_rq_service, (void *)rx_pkts); 521 522 if (*work_done) { 523 vnic_rq_fill(rq, enic_rq_alloc_buf); 524 525 /* Need at least one buffer on ring to get going */ 526 if (vnic_rq_desc_used(rq) == 0) { 527 dev_err(enic, "Unable to alloc receive buffers\n"); 528 err = -1; 529 } 530 } 531 return err; 532 } 533 534 static void * 535 enic_alloc_consistent(__rte_unused void *priv, size_t size, 536 dma_addr_t *dma_handle, u8 *name) 537 { 538 void *vaddr; 539 const struct rte_memzone *rz; 540 *dma_handle = 0; 541 542 rz = rte_memzone_reserve_aligned((const char *)name, 543 size, SOCKET_ID_ANY, 0, ENIC_ALIGN); 544 if (!rz) { 545 pr_err("%s : Failed to allocate memory requested for %s", 546 __func__, name); 547 return NULL; 548 } 549 550 vaddr = rz->addr; 551 *dma_handle = (dma_addr_t)rz->phys_addr; 552 553 return vaddr; 554 } 555 556 static void 557 enic_free_consistent(__rte_unused struct rte_pci_device *hwdev, 558 __rte_unused size_t size, 559 __rte_unused void *vaddr, 560 __rte_unused dma_addr_t dma_handle) 561 { 562 /* Nothing to be done */ 563 } 564 565 static void 566 enic_intr_handler(__rte_unused struct rte_intr_handle *handle, 567 void *arg) 568 { 569 struct enic *enic = pmd_priv((struct rte_eth_dev *)arg); 570 571 vnic_intr_return_all_credits(&enic->intr); 572 573 enic_log_q_error(enic); 574 } 575 576 int enic_enable(struct enic *enic) 577 { 578 unsigned int index; 579 struct rte_eth_dev *eth_dev = enic->rte_dev; 580 581 eth_dev->data->dev_link.link_speed = vnic_dev_port_speed(enic->vdev); 582 eth_dev->data->dev_link.link_duplex = ETH_LINK_FULL_DUPLEX; 583 vnic_dev_notify_set(enic->vdev, -1); /* No Intr for notify */ 584 585 if (enic_clsf_init(enic)) 586 dev_warning(enic, "Init of hash table for clsf failed."\ 587 "Flow director feature will not work\n"); 588 589 /* Fill RQ bufs */ 590 for (index = 0; index < enic->rq_count; index++) { 591 vnic_rq_fill(&enic->rq[index], enic_rq_alloc_buf); 592 593 /* Need at least one buffer on ring to get going 594 */ 595 if (vnic_rq_desc_used(&enic->rq[index]) == 0) { 596 dev_err(enic, "Unable to alloc receive buffers\n"); 597 return -1; 598 } 599 } 600 601 for (index = 0; index < enic->wq_count; index++) 602 vnic_wq_enable(&enic->wq[index]); 603 for (index = 0; index < enic->rq_count; index++) 604 vnic_rq_enable(&enic->rq[index]); 605 606 vnic_dev_enable_wait(enic->vdev); 607 608 /* Register and enable error interrupt */ 609 rte_intr_callback_register(&(enic->pdev->intr_handle), 610 enic_intr_handler, (void *)enic->rte_dev); 611 612 rte_intr_enable(&(enic->pdev->intr_handle)); 613 vnic_intr_unmask(&enic->intr); 614 615 return 0; 616 } 617 618 int enic_alloc_intr_resources(struct enic *enic) 619 { 620 int err; 621 622 dev_info(enic, "vNIC resources used: "\ 623 "wq %d rq %d cq %d intr %d\n", 624 enic->wq_count, enic->rq_count, 625 enic->cq_count, enic->intr_count); 626 627 err = vnic_intr_alloc(enic->vdev, &enic->intr, 0); 628 if (err) 629 enic_free_vnic_resources(enic); 630 631 return err; 632 } 633 634 void enic_free_rq(void *rxq) 635 { 636 struct vnic_rq *rq = (struct vnic_rq *)rxq; 637 struct enic *enic = vnic_dev_priv(rq->vdev); 638 639 vnic_rq_free(rq); 640 vnic_cq_free(&enic->cq[rq->index]); 641 } 642 643 void enic_start_wq(struct enic *enic, uint16_t queue_idx) 644 { 645 vnic_wq_enable(&enic->wq[queue_idx]); 646 } 647 648 int enic_stop_wq(struct enic *enic, uint16_t queue_idx) 649 { 650 return vnic_wq_disable(&enic->wq[queue_idx]); 651 } 652 653 void enic_start_rq(struct enic *enic, uint16_t queue_idx) 654 { 655 vnic_rq_enable(&enic->rq[queue_idx]); 656 } 657 658 int enic_stop_rq(struct enic *enic, uint16_t queue_idx) 659 { 660 return vnic_rq_disable(&enic->rq[queue_idx]); 661 } 662 663 int enic_alloc_rq(struct enic *enic, uint16_t queue_idx, 664 unsigned int socket_id, struct rte_mempool *mp, 665 uint16_t nb_desc) 666 { 667 int err; 668 struct vnic_rq *rq = &enic->rq[queue_idx]; 669 670 rq->socket_id = socket_id; 671 rq->mp = mp; 672 673 if (nb_desc) { 674 if (nb_desc > enic->config.rq_desc_count) { 675 dev_warning(enic, 676 "RQ %d - number of rx desc in cmd line (%d)"\ 677 "is greater than that in the UCSM/CIMC adapter"\ 678 "policy. Applying the value in the adapter "\ 679 "policy (%d).\n", 680 queue_idx, nb_desc, enic->config.rq_desc_count); 681 } else if (nb_desc != enic->config.rq_desc_count) { 682 enic->config.rq_desc_count = nb_desc; 683 dev_info(enic, 684 "RX Queues - effective number of descs:%d\n", 685 nb_desc); 686 } 687 } 688 689 /* Allocate queue resources */ 690 err = vnic_rq_alloc(enic->vdev, &enic->rq[queue_idx], queue_idx, 691 enic->config.rq_desc_count, 692 sizeof(struct rq_enet_desc)); 693 if (err) { 694 dev_err(enic, "error in allocation of rq\n"); 695 return err; 696 } 697 698 err = vnic_cq_alloc(enic->vdev, &enic->cq[queue_idx], queue_idx, 699 socket_id, enic->config.rq_desc_count, 700 sizeof(struct cq_enet_rq_desc)); 701 if (err) { 702 vnic_rq_free(rq); 703 dev_err(enic, "error in allocation of cq for rq\n"); 704 } 705 706 return err; 707 } 708 709 void enic_free_wq(void *txq) 710 { 711 struct vnic_wq *wq = (struct vnic_wq *)txq; 712 struct enic *enic = vnic_dev_priv(wq->vdev); 713 714 vnic_wq_free(wq); 715 vnic_cq_free(&enic->cq[enic->rq_count + wq->index]); 716 } 717 718 int enic_alloc_wq(struct enic *enic, uint16_t queue_idx, 719 unsigned int socket_id, uint16_t nb_desc) 720 { 721 int err; 722 struct vnic_wq *wq = &enic->wq[queue_idx]; 723 unsigned int cq_index = enic_cq_wq(enic, queue_idx); 724 725 wq->socket_id = socket_id; 726 if (nb_desc) { 727 if (nb_desc > enic->config.wq_desc_count) { 728 dev_warning(enic, 729 "WQ %d - number of tx desc in cmd line (%d)"\ 730 "is greater than that in the UCSM/CIMC adapter"\ 731 "policy. Applying the value in the adapter "\ 732 "policy (%d)\n", 733 queue_idx, nb_desc, enic->config.wq_desc_count); 734 } else if (nb_desc != enic->config.wq_desc_count) { 735 enic->config.wq_desc_count = nb_desc; 736 dev_info(enic, 737 "TX Queues - effective number of descs:%d\n", 738 nb_desc); 739 } 740 } 741 742 /* Allocate queue resources */ 743 err = vnic_wq_alloc(enic->vdev, &enic->wq[queue_idx], queue_idx, 744 enic->config.wq_desc_count, 745 sizeof(struct wq_enet_desc)); 746 if (err) { 747 dev_err(enic, "error in allocation of wq\n"); 748 return err; 749 } 750 751 err = vnic_cq_alloc(enic->vdev, &enic->cq[cq_index], cq_index, 752 socket_id, enic->config.wq_desc_count, 753 sizeof(struct cq_enet_wq_desc)); 754 if (err) { 755 vnic_wq_free(wq); 756 dev_err(enic, "error in allocation of cq for wq\n"); 757 } 758 759 return err; 760 } 761 762 int enic_disable(struct enic *enic) 763 { 764 unsigned int i; 765 int err; 766 767 vnic_intr_mask(&enic->intr); 768 (void)vnic_intr_masked(&enic->intr); /* flush write */ 769 770 vnic_dev_disable(enic->vdev); 771 772 enic_clsf_destroy(enic); 773 774 if (!enic_is_sriov_vf(enic)) 775 vnic_dev_del_addr(enic->vdev, enic->mac_addr); 776 777 for (i = 0; i < enic->wq_count; i++) { 778 err = vnic_wq_disable(&enic->wq[i]); 779 if (err) 780 return err; 781 } 782 for (i = 0; i < enic->rq_count; i++) { 783 err = vnic_rq_disable(&enic->rq[i]); 784 if (err) 785 return err; 786 } 787 788 vnic_dev_set_reset_flag(enic->vdev, 1); 789 vnic_dev_notify_unset(enic->vdev); 790 791 for (i = 0; i < enic->wq_count; i++) 792 vnic_wq_clean(&enic->wq[i], enic_free_wq_buf); 793 for (i = 0; i < enic->rq_count; i++) 794 vnic_rq_clean(&enic->rq[i], enic_free_rq_buf); 795 for (i = 0; i < enic->cq_count; i++) 796 vnic_cq_clean(&enic->cq[i]); 797 vnic_intr_clean(&enic->intr); 798 799 return 0; 800 } 801 802 static int enic_dev_wait(struct vnic_dev *vdev, 803 int (*start)(struct vnic_dev *, int), 804 int (*finished)(struct vnic_dev *, int *), 805 int arg) 806 { 807 int done; 808 int err; 809 int i; 810 811 err = start(vdev, arg); 812 if (err) 813 return err; 814 815 /* Wait for func to complete...2 seconds max */ 816 for (i = 0; i < 2000; i++) { 817 err = finished(vdev, &done); 818 if (err) 819 return err; 820 if (done) 821 return 0; 822 usleep(1000); 823 } 824 return -ETIMEDOUT; 825 } 826 827 static int enic_dev_open(struct enic *enic) 828 { 829 int err; 830 831 err = enic_dev_wait(enic->vdev, vnic_dev_open, 832 vnic_dev_open_done, 0); 833 if (err) 834 dev_err(enic_get_dev(enic), 835 "vNIC device open failed, err %d\n", err); 836 837 return err; 838 } 839 840 static int enic_set_rsskey(struct enic *enic) 841 { 842 dma_addr_t rss_key_buf_pa; 843 union vnic_rss_key *rss_key_buf_va = NULL; 844 static union vnic_rss_key rss_key = { 845 .key = { 846 [0] = {.b = {85, 67, 83, 97, 119, 101, 115, 111, 109, 101}}, 847 [1] = {.b = {80, 65, 76, 79, 117, 110, 105, 113, 117, 101}}, 848 [2] = {.b = {76, 73, 78, 85, 88, 114, 111, 99, 107, 115}}, 849 [3] = {.b = {69, 78, 73, 67, 105, 115, 99, 111, 111, 108}}, 850 } 851 }; 852 int err; 853 u8 name[NAME_MAX]; 854 855 snprintf((char *)name, NAME_MAX, "rss_key-%s", enic->bdf_name); 856 rss_key_buf_va = enic_alloc_consistent(enic, sizeof(union vnic_rss_key), 857 &rss_key_buf_pa, name); 858 if (!rss_key_buf_va) 859 return -ENOMEM; 860 861 rte_memcpy(rss_key_buf_va, &rss_key, sizeof(union vnic_rss_key)); 862 863 err = enic_set_rss_key(enic, 864 rss_key_buf_pa, 865 sizeof(union vnic_rss_key)); 866 867 enic_free_consistent(enic->pdev, sizeof(union vnic_rss_key), 868 rss_key_buf_va, rss_key_buf_pa); 869 870 return err; 871 } 872 873 static int enic_set_rsscpu(struct enic *enic, u8 rss_hash_bits) 874 { 875 dma_addr_t rss_cpu_buf_pa; 876 union vnic_rss_cpu *rss_cpu_buf_va = NULL; 877 int i; 878 int err; 879 u8 name[NAME_MAX]; 880 881 snprintf((char *)name, NAME_MAX, "rss_cpu-%s", enic->bdf_name); 882 rss_cpu_buf_va = enic_alloc_consistent(enic, sizeof(union vnic_rss_cpu), 883 &rss_cpu_buf_pa, name); 884 if (!rss_cpu_buf_va) 885 return -ENOMEM; 886 887 for (i = 0; i < (1 << rss_hash_bits); i++) 888 (*rss_cpu_buf_va).cpu[i/4].b[i%4] = i % enic->rq_count; 889 890 err = enic_set_rss_cpu(enic, 891 rss_cpu_buf_pa, 892 sizeof(union vnic_rss_cpu)); 893 894 enic_free_consistent(enic->pdev, sizeof(union vnic_rss_cpu), 895 rss_cpu_buf_va, rss_cpu_buf_pa); 896 897 return err; 898 } 899 900 static int enic_set_niccfg(struct enic *enic, u8 rss_default_cpu, 901 u8 rss_hash_type, u8 rss_hash_bits, u8 rss_base_cpu, u8 rss_enable) 902 { 903 const u8 tso_ipid_split_en = 0; 904 int err; 905 906 /* Enable VLAN tag stripping */ 907 908 err = enic_set_nic_cfg(enic, 909 rss_default_cpu, rss_hash_type, 910 rss_hash_bits, rss_base_cpu, 911 rss_enable, tso_ipid_split_en, 912 enic->ig_vlan_strip_en); 913 914 return err; 915 } 916 917 int enic_set_rss_nic_cfg(struct enic *enic) 918 { 919 const u8 rss_default_cpu = 0; 920 const u8 rss_hash_type = NIC_CFG_RSS_HASH_TYPE_IPV4 | 921 NIC_CFG_RSS_HASH_TYPE_TCP_IPV4 | 922 NIC_CFG_RSS_HASH_TYPE_IPV6 | 923 NIC_CFG_RSS_HASH_TYPE_TCP_IPV6; 924 const u8 rss_hash_bits = 7; 925 const u8 rss_base_cpu = 0; 926 u8 rss_enable = ENIC_SETTING(enic, RSS) && (enic->rq_count > 1); 927 928 if (rss_enable) { 929 if (!enic_set_rsskey(enic)) { 930 if (enic_set_rsscpu(enic, rss_hash_bits)) { 931 rss_enable = 0; 932 dev_warning(enic, "RSS disabled, "\ 933 "Failed to set RSS cpu indirection table."); 934 } 935 } else { 936 rss_enable = 0; 937 dev_warning(enic, 938 "RSS disabled, Failed to set RSS key.\n"); 939 } 940 } 941 942 return enic_set_niccfg(enic, rss_default_cpu, rss_hash_type, 943 rss_hash_bits, rss_base_cpu, rss_enable); 944 } 945 946 int enic_setup_finish(struct enic *enic) 947 { 948 int ret; 949 950 ret = enic_set_rss_nic_cfg(enic); 951 if (ret) { 952 dev_err(enic, "Failed to config nic, aborting.\n"); 953 return -1; 954 } 955 956 vnic_dev_add_addr(enic->vdev, enic->mac_addr); 957 958 /* Default conf */ 959 vnic_dev_packet_filter(enic->vdev, 960 1 /* directed */, 961 1 /* multicast */, 962 1 /* broadcast */, 963 0 /* promisc */, 964 1 /* allmulti */); 965 966 enic->promisc = 0; 967 enic->allmulti = 1; 968 969 return 0; 970 } 971 972 void enic_add_packet_filter(struct enic *enic) 973 { 974 /* Args -> directed, multicast, broadcast, promisc, allmulti */ 975 vnic_dev_packet_filter(enic->vdev, 1, 1, 1, 976 enic->promisc, enic->allmulti); 977 } 978 979 int enic_get_link_status(struct enic *enic) 980 { 981 return vnic_dev_link_status(enic->vdev); 982 } 983 984 static void enic_dev_deinit(struct enic *enic) 985 { 986 struct rte_eth_dev *eth_dev = enic->rte_dev; 987 988 rte_free(eth_dev->data->mac_addrs); 989 } 990 991 992 int enic_set_vnic_res(struct enic *enic) 993 { 994 struct rte_eth_dev *eth_dev = enic->rte_dev; 995 996 if ((enic->rq_count < eth_dev->data->nb_rx_queues) || 997 (enic->wq_count < eth_dev->data->nb_tx_queues)) { 998 dev_err(dev, "Not enough resources configured, aborting\n"); 999 return -1; 1000 } 1001 1002 enic->rq_count = eth_dev->data->nb_rx_queues; 1003 enic->wq_count = eth_dev->data->nb_tx_queues; 1004 if (enic->cq_count < (enic->rq_count + enic->wq_count)) { 1005 dev_err(dev, "Not enough resources configured, aborting\n"); 1006 return -1; 1007 } 1008 1009 enic->cq_count = enic->rq_count + enic->wq_count; 1010 return 0; 1011 } 1012 1013 static int enic_dev_init(struct enic *enic) 1014 { 1015 int err; 1016 struct rte_eth_dev *eth_dev = enic->rte_dev; 1017 1018 vnic_dev_intr_coal_timer_info_default(enic->vdev); 1019 1020 /* Get vNIC configuration 1021 */ 1022 err = enic_get_vnic_config(enic); 1023 if (err) { 1024 dev_err(dev, "Get vNIC configuration failed, aborting\n"); 1025 return err; 1026 } 1027 1028 eth_dev->data->mac_addrs = rte_zmalloc("enic_mac_addr", ETH_ALEN, 0); 1029 if (!eth_dev->data->mac_addrs) { 1030 dev_err(enic, "mac addr storage alloc failed, aborting.\n"); 1031 return -1; 1032 } 1033 ether_addr_copy((struct ether_addr *) enic->mac_addr, 1034 ð_dev->data->mac_addrs[0]); 1035 1036 1037 /* Get available resource counts 1038 */ 1039 enic_get_res_counts(enic); 1040 1041 vnic_dev_set_reset_flag(enic->vdev, 0); 1042 1043 return 0; 1044 1045 } 1046 1047 int enic_probe(struct enic *enic) 1048 { 1049 struct rte_pci_device *pdev = enic->pdev; 1050 int err = -1; 1051 1052 dev_debug(enic, " Initializing ENIC PMD version %s\n", DRV_VERSION); 1053 1054 enic->bar0.vaddr = (void *)pdev->mem_resource[0].addr; 1055 enic->bar0.len = pdev->mem_resource[0].len; 1056 1057 /* Register vNIC device */ 1058 enic->vdev = vnic_dev_register(NULL, enic, enic->pdev, &enic->bar0, 1); 1059 if (!enic->vdev) { 1060 dev_err(enic, "vNIC registration failed, aborting\n"); 1061 goto err_out; 1062 } 1063 1064 vnic_register_cbacks(enic->vdev, 1065 enic_alloc_consistent, 1066 enic_free_consistent); 1067 1068 /* Issue device open to get device in known state */ 1069 err = enic_dev_open(enic); 1070 if (err) { 1071 dev_err(enic, "vNIC dev open failed, aborting\n"); 1072 goto err_out_unregister; 1073 } 1074 1075 /* Set ingress vlan rewrite mode before vnic initialization */ 1076 err = vnic_dev_set_ig_vlan_rewrite_mode(enic->vdev, 1077 IG_VLAN_REWRITE_MODE_PRIORITY_TAG_DEFAULT_VLAN); 1078 if (err) { 1079 dev_err(enic, 1080 "Failed to set ingress vlan rewrite mode, aborting.\n"); 1081 goto err_out_dev_close; 1082 } 1083 1084 /* Issue device init to initialize the vnic-to-switch link. 1085 * We'll start with carrier off and wait for link UP 1086 * notification later to turn on carrier. We don't need 1087 * to wait here for the vnic-to-switch link initialization 1088 * to complete; link UP notification is the indication that 1089 * the process is complete. 1090 */ 1091 1092 err = vnic_dev_init(enic->vdev, 0); 1093 if (err) { 1094 dev_err(enic, "vNIC dev init failed, aborting\n"); 1095 goto err_out_dev_close; 1096 } 1097 1098 err = enic_dev_init(enic); 1099 if (err) { 1100 dev_err(enic, "Device initialization failed, aborting\n"); 1101 goto err_out_dev_close; 1102 } 1103 1104 return 0; 1105 1106 err_out_dev_close: 1107 vnic_dev_close(enic->vdev); 1108 err_out_unregister: 1109 vnic_dev_unregister(enic->vdev); 1110 err_out: 1111 return err; 1112 } 1113 1114 void enic_remove(struct enic *enic) 1115 { 1116 enic_dev_deinit(enic); 1117 vnic_dev_close(enic->vdev); 1118 vnic_dev_unregister(enic->vdev); 1119 } 1120