drivers/net/enic/enic_main.c

   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 void
  84 enic_rxmbuf_queue_release(struct enic *enic, struct vnic_rq *rq)
  85 {
  86         uint16_t i;
  87
  88         if (!rq || !rq->mbuf_ring) {
  89                 dev_debug(enic, "Pointer to rq or mbuf_ring is NULL");
  90                 return;
  91         }
  92
  93         for (i = 0; i < enic->config.rq_desc_count; i++) {
  94                 if (rq->mbuf_ring[i]) {
  95                         rte_pktmbuf_free_seg(rq->mbuf_ring[i]);
  96                         rq->mbuf_ring[i] = NULL;
  97                 }
  98         }
  99 }
 100
 101
 102 void enic_set_hdr_split_size(struct enic *enic, u16 split_hdr_size)
 103 {
 104         vnic_set_hdr_split_size(enic->vdev, split_hdr_size);
 105 }
 106
 107 static void enic_free_wq_buf(__rte_unused struct vnic_wq *wq, struct vnic_wq_buf *buf)
 108 {
 109         struct rte_mbuf *mbuf = (struct rte_mbuf *)buf->os_buf;
 110
 111         rte_mempool_put(mbuf->pool, mbuf);
 112         buf->os_buf = NULL;
 113 }
 114
 115 static void enic_wq_free_buf(struct vnic_wq *wq,
 116         __rte_unused struct cq_desc *cq_desc,
 117         struct vnic_wq_buf *buf,
 118         __rte_unused void *opaque)
 119 {
 120         enic_free_wq_buf(wq, buf);
 121 }
 122
 123 static int enic_wq_service(struct vnic_dev *vdev, struct cq_desc *cq_desc,
 124         __rte_unused u8 type, u16 q_number, u16 completed_index, void *opaque)
 125 {
 126         struct enic *enic = vnic_dev_priv(vdev);
 127
 128         vnic_wq_service(&enic->wq[q_number], cq_desc,
 129                 completed_index, enic_wq_free_buf,
 130                 opaque);
 131
 132         return 0;
 133 }
 134
 135 static void enic_log_q_error(struct enic *enic)
 136 {
 137         unsigned int i;
 138         u32 error_status;
 139
 140         for (i = 0; i < enic->wq_count; i++) {
 141                 error_status = vnic_wq_error_status(&enic->wq[i]);
 142                 if (error_status)
 143                         dev_err(enic, "WQ[%d] error_status %d\n", i,
 144                                 error_status);
 145         }
 146
 147         for (i = 0; i < enic->rq_count; i++) {
 148                 error_status = vnic_rq_error_status(&enic->rq[i]);
 149                 if (error_status)
 150                         dev_err(enic, "RQ[%d] error_status %d\n", i,
 151                                 error_status);
 152         }
 153 }
 154
 155 unsigned int enic_cleanup_wq(struct enic *enic, struct vnic_wq *wq)
 156 {
 157         unsigned int cq = enic_cq_wq(enic, wq->index);
 158
 159         /* Return the work done */
 160         return vnic_cq_service(&enic->cq[cq],
 161                 -1 /*wq_work_to_do*/, enic_wq_service, NULL);
 162 }
 163
 164 void enic_post_wq_index(struct vnic_wq *wq)
 165 {
 166         enic_vnic_post_wq_index(wq);
 167 }
 168
 169 void enic_send_pkt(struct enic *enic, struct vnic_wq *wq,
 170                    struct rte_mbuf *tx_pkt, unsigned short len,
 171                    uint8_t sop, uint8_t eop, uint8_t cq_entry,
 172                    uint16_t ol_flags, uint16_t vlan_tag)
 173 {
 174         struct wq_enet_desc *desc = vnic_wq_next_desc(wq);
 175         uint16_t mss = 0;
 176         uint8_t vlan_tag_insert = 0;
 177         uint64_t bus_addr = (dma_addr_t)
 178             (tx_pkt->buf_physaddr + tx_pkt->data_off);
 179
 180         if (sop) {
 181                 if (ol_flags & PKT_TX_VLAN_PKT)
 182                         vlan_tag_insert = 1;
 183
 184                 if (enic->hw_ip_checksum) {
 185                         if (ol_flags & PKT_TX_IP_CKSUM)
 186                                 mss |= ENIC_CALC_IP_CKSUM;
 187
 188                         if (ol_flags & PKT_TX_TCP_UDP_CKSUM)
 189                                 mss |= ENIC_CALC_TCP_UDP_CKSUM;
 190                 }
 191         }
 192
 193         wq_enet_desc_enc(desc,
 194                 bus_addr,
 195                 len,
 196                 mss,
 197                 0 /* header_length */,
 198                 0 /* offload_mode WQ_ENET_OFFLOAD_MODE_CSUM */,
 199                 eop,
 200                 cq_entry,
 201                 0 /* fcoe_encap */,
 202                 vlan_tag_insert,
 203                 vlan_tag,
 204                 0 /* loopback */);
 205
 206         enic_vnic_post_wq(wq, (void *)tx_pkt, bus_addr, len,
 207                           sop,
 208                           1 /*desc_skip_cnt*/,
 209                           cq_entry,
 210                           0 /*compressed send*/,
 211                           0 /*wrid*/);
 212 }
 213
 214 void enic_dev_stats_clear(struct enic *enic)
 215 {
 216         if (vnic_dev_stats_clear(enic->vdev))
 217                 dev_err(enic, "Error in clearing stats\n");
 218 }
 219
 220 void enic_dev_stats_get(struct enic *enic, struct rte_eth_stats *r_stats)
 221 {
 222         struct vnic_stats *stats;
 223
 224         if (vnic_dev_stats_dump(enic->vdev, &stats)) {
 225                 dev_err(enic, "Error in getting stats\n");
 226                 return;
 227         }
 228
 229         r_stats->ipackets = stats->rx.rx_frames_ok;
 230         r_stats->opackets = stats->tx.tx_frames_ok;
 231
 232         r_stats->ibytes = stats->rx.rx_bytes_ok;
 233         r_stats->obytes = stats->tx.tx_bytes_ok;
 234
 235         r_stats->ierrors = stats->rx.rx_errors;
 236         r_stats->oerrors = stats->tx.tx_errors;
 237
 238         r_stats->imissed = stats->rx.rx_drop;
 239
 240         r_stats->rx_nombuf = stats->rx.rx_no_bufs;
 241 }
 242
 243 void enic_del_mac_address(struct enic *enic)
 244 {
 245         if (vnic_dev_del_addr(enic->vdev, enic->mac_addr))
 246                 dev_err(enic, "del mac addr failed\n");
 247 }
 248
 249 void enic_set_mac_address(struct enic *enic, uint8_t *mac_addr)
 250 {
 251         int err;
 252
 253         if (!is_eth_addr_valid(mac_addr)) {
 254                 dev_err(enic, "invalid mac address\n");
 255                 return;
 256         }
 257
 258         err = vnic_dev_del_addr(enic->vdev, mac_addr);
 259         if (err) {
 260                 dev_err(enic, "del mac addr failed\n");
 261                 return;
 262         }
 263
 264         ether_addr_copy((struct ether_addr *)mac_addr,
 265                 (struct ether_addr *)enic->mac_addr);
 266
 267         err = vnic_dev_add_addr(enic->vdev, mac_addr);
 268         if (err) {
 269                 dev_err(enic, "add mac addr failed\n");
 270                 return;
 271         }
 272 }
 273
 274 static void
 275 enic_free_rq_buf(struct rte_mbuf **mbuf)
 276 {
 277         if (*mbuf == NULL)
 278                 return;
 279
 280         rte_pktmbuf_free(*mbuf);
 281         mbuf = NULL;
 282 }
 283
 284 void enic_init_vnic_resources(struct enic *enic)
 285 {
 286         unsigned int error_interrupt_enable = 1;
 287         unsigned int error_interrupt_offset = 0;
 288         unsigned int index = 0;
 289
 290         for (index = 0; index < enic->rq_count; index++) {
 291                 vnic_rq_init(&enic->rq[index],
 292                         enic_cq_rq(enic, index),
 293                         error_interrupt_enable,
 294                         error_interrupt_offset);
 295         }
 296
 297         for (index = 0; index < enic->wq_count; index++) {
 298                 vnic_wq_init(&enic->wq[index],
 299                         enic_cq_wq(enic, index),
 300                         error_interrupt_enable,
 301                         error_interrupt_offset);
 302         }
 303
 304         vnic_dev_stats_clear(enic->vdev);
 305
 306         for (index = 0; index < enic->cq_count; index++) {
 307                 vnic_cq_init(&enic->cq[index],
 308                         0 /* flow_control_enable */,
 309                         1 /* color_enable */,
 310                         0 /* cq_head */,
 311                         0 /* cq_tail */,
 312                         1 /* cq_tail_color */,
 313                         0 /* interrupt_enable */,
 314                         1 /* cq_entry_enable */,
 315                         0 /* cq_message_enable */,
 316                         0 /* interrupt offset */,
 317                         0 /* cq_message_addr */);
 318         }
 319
 320         vnic_intr_init(&enic->intr,
 321                 enic->config.intr_timer_usec,
 322                 enic->config.intr_timer_type,
 323                 /*mask_on_assertion*/1);
 324 }
 325
 326
 327 static int
 328 enic_alloc_rx_queue_mbufs(struct enic *enic, struct vnic_rq *rq)
 329 {
 330         struct rte_mbuf *mb;
 331         struct rq_enet_desc *rqd = rq->ring.descs;
 332         unsigned i;
 333         dma_addr_t dma_addr;
 334
 335         dev_debug(enic, "queue %u, allocating %u rx queue mbufs\n", rq->index,
 336                   rq->ring.desc_count);
 337
 338         for (i = 0; i < rq->ring.desc_count; i++, rqd++) {
 339                 mb = rte_mbuf_raw_alloc(rq->mp);
 340                 if (mb == NULL) {
 341                         dev_err(enic, "RX mbuf alloc failed queue_id=%u\n",
 342                         (unsigned)rq->index);
 343                         return -ENOMEM;
 344                 }
 345
 346                 dma_addr = (dma_addr_t)(mb->buf_physaddr
 347                            + RTE_PKTMBUF_HEADROOM);
 348
 349                 rq_enet_desc_enc(rqd, dma_addr, RQ_ENET_TYPE_ONLY_SOP,
 350                                  mb->buf_len - RTE_PKTMBUF_HEADROOM);
 351                 rq->mbuf_ring[i] = mb;
 352         }
 353
 354         /* make sure all prior writes are complete before doing the PIO write */
 355         rte_rmb();
 356
 357         /* Post all but the last 2 cache lines' worth of descriptors */
 358         rq->posted_index = rq->ring.desc_count - (2 * RTE_CACHE_LINE_SIZE
 359                         / sizeof(struct rq_enet_desc));
 360         rq->rx_nb_hold = 0;
 361
 362         dev_debug(enic, "port=%u, qidx=%u, Write %u posted idx, %u sw held\n",
 363                 enic->port_id, rq->index, rq->posted_index, rq->rx_nb_hold);
 364         iowrite32(rq->posted_index, &rq->ctrl->posted_index);
 365         rte_rmb();
 366
 367         return 0;
 368
 369 }
 370
 371 static void *
 372 enic_alloc_consistent(__rte_unused void *priv, size_t size,
 373         dma_addr_t *dma_handle, u8 *name)
 374 {
 375         void *vaddr;
 376         const struct rte_memzone *rz;
 377         *dma_handle = 0;
 378
 379         rz = rte_memzone_reserve_aligned((const char *)name,
 380                                          size, SOCKET_ID_ANY, 0, ENIC_ALIGN);
 381         if (!rz) {
 382                 pr_err("%s : Failed to allocate memory requested for %s\n",
 383                         __func__, name);
 384                 return NULL;
 385         }
 386
 387         vaddr = rz->addr;
 388         *dma_handle = (dma_addr_t)rz->phys_addr;
 389
 390         return vaddr;
 391 }
 392
 393 static void
 394 enic_free_consistent(__rte_unused struct rte_pci_device *hwdev,
 395         __rte_unused size_t size,
 396         __rte_unused void *vaddr,
 397         __rte_unused dma_addr_t dma_handle)
 398 {
 399         /* Nothing to be done */
 400 }
 401
 402 static void
 403 enic_intr_handler(__rte_unused struct rte_intr_handle *handle,
 404         void *arg)
 405 {
 406         struct enic *enic = pmd_priv((struct rte_eth_dev *)arg);
 407
 408         vnic_intr_return_all_credits(&enic->intr);
 409
 410         enic_log_q_error(enic);
 411 }
 412
 413 int enic_enable(struct enic *enic)
 414 {
 415         unsigned int index;
 416         int err;
 417         struct rte_eth_dev *eth_dev = enic->rte_dev;
 418
 419         eth_dev->data->dev_link.link_speed = vnic_dev_port_speed(enic->vdev);
 420         eth_dev->data->dev_link.link_duplex = ETH_LINK_FULL_DUPLEX;
 421         vnic_dev_notify_set(enic->vdev, -1); /* No Intr for notify */
 422
 423         if (enic_clsf_init(enic))
 424                 dev_warning(enic, "Init of hash table for clsf failed."\
 425                         "Flow director feature will not work\n");
 426
 427         for (index = 0; index < enic->rq_count; index++) {
 428                 err = enic_alloc_rx_queue_mbufs(enic, &enic->rq[index]);
 429                 if (err) {
 430                         dev_err(enic, "Failed to alloc RX queue mbufs\n");
 431                         return err;
 432                 }
 433         }
 434
 435         for (index = 0; index < enic->wq_count; index++)
 436                 vnic_wq_enable(&enic->wq[index]);
 437         for (index = 0; index < enic->rq_count; index++)
 438                 vnic_rq_enable(&enic->rq[index]);
 439
 440         vnic_dev_enable_wait(enic->vdev);
 441
 442         /* Register and enable error interrupt */
 443         rte_intr_callback_register(&(enic->pdev->intr_handle),
 444                 enic_intr_handler, (void *)enic->rte_dev);
 445
 446         rte_intr_enable(&(enic->pdev->intr_handle));
 447         vnic_intr_unmask(&enic->intr);
 448
 449         return 0;
 450 }
 451
 452 int enic_alloc_intr_resources(struct enic *enic)
 453 {
 454         int err;
 455
 456         dev_info(enic, "vNIC resources used:  "\
 457                 "wq %d rq %d cq %d intr %d\n",
 458                 enic->wq_count, enic->rq_count,
 459                 enic->cq_count, enic->intr_count);
 460
 461         err = vnic_intr_alloc(enic->vdev, &enic->intr, 0);
 462         if (err)
 463                 enic_free_vnic_resources(enic);
 464
 465         return err;
 466 }
 467
 468 void enic_free_rq(void *rxq)
 469 {
 470         struct vnic_rq *rq = (struct vnic_rq *)rxq;
 471         struct enic *enic = vnic_dev_priv(rq->vdev);
 472
 473         enic_rxmbuf_queue_release(enic, rq);
 474         rte_free(rq->mbuf_ring);
 475         rq->mbuf_ring = NULL;
 476         vnic_rq_free(rq);
 477         vnic_cq_free(&enic->cq[rq->index]);
 478 }
 479
 480 void enic_start_wq(struct enic *enic, uint16_t queue_idx)
 481 {
 482         vnic_wq_enable(&enic->wq[queue_idx]);
 483 }
 484
 485 int enic_stop_wq(struct enic *enic, uint16_t queue_idx)
 486 {
 487         return vnic_wq_disable(&enic->wq[queue_idx]);
 488 }
 489
 490 void enic_start_rq(struct enic *enic, uint16_t queue_idx)
 491 {
 492         vnic_rq_enable(&enic->rq[queue_idx]);
 493 }
 494
 495 int enic_stop_rq(struct enic *enic, uint16_t queue_idx)
 496 {
 497         return vnic_rq_disable(&enic->rq[queue_idx]);
 498 }
 499
 500 int enic_alloc_rq(struct enic *enic, uint16_t queue_idx,
 501         unsigned int socket_id, struct rte_mempool *mp,
 502         uint16_t nb_desc)
 503 {
 504         int rc;
 505         struct vnic_rq *rq = &enic->rq[queue_idx];
 506
 507         rq->socket_id = socket_id;
 508         rq->mp = mp;
 509
 510         if (nb_desc) {
 511                 if (nb_desc > enic->config.rq_desc_count) {
 512                         dev_warning(enic,
 513                                 "RQ %d - number of rx desc in cmd line (%d)"\
 514                                 "is greater than that in the UCSM/CIMC adapter"\
 515                                 "policy.  Applying the value in the adapter "\
 516                                 "policy (%d).\n",
 517                                 queue_idx, nb_desc, enic->config.rq_desc_count);
 518                         nb_desc = enic->config.rq_desc_count;
 519                 }
 520                 dev_info(enic, "RX Queues - effective number of descs:%d\n",
 521                          nb_desc);
 522         }
 523
 524         /* Allocate queue resources */
 525         rc = vnic_rq_alloc(enic->vdev, rq, queue_idx,
 526                 nb_desc, sizeof(struct rq_enet_desc));
 527         if (rc) {
 528                 dev_err(enic, "error in allocation of rq\n");
 529                 goto err_exit;
 530         }
 531
 532         rc = vnic_cq_alloc(enic->vdev, &enic->cq[queue_idx], queue_idx,
 533                 socket_id, nb_desc,
 534                 sizeof(struct cq_enet_rq_desc));
 535         if (rc) {
 536                 dev_err(enic, "error in allocation of cq for rq\n");
 537                 goto err_free_rq_exit;
 538         }
 539
 540         /* Allocate the mbuf ring */
 541         rq->mbuf_ring = (struct rte_mbuf **)rte_zmalloc_socket("rq->mbuf_ring",
 542                         sizeof(struct rte_mbuf *) * nb_desc,
 543                         RTE_CACHE_LINE_SIZE, rq->socket_id);
 544
 545         if (rq->mbuf_ring != NULL)
 546                 return 0;
 547
 548         /* cleanup on error */
 549         vnic_cq_free(&enic->cq[queue_idx]);
 550 err_free_rq_exit:
 551         vnic_rq_free(rq);
 552 err_exit:
 553         return -ENOMEM;
 554 }
 555
 556 void enic_free_wq(void *txq)
 557 {
 558         struct vnic_wq *wq = (struct vnic_wq *)txq;
 559         struct enic *enic = vnic_dev_priv(wq->vdev);
 560
 561         vnic_wq_free(wq);
 562         vnic_cq_free(&enic->cq[enic->rq_count + wq->index]);
 563 }
 564
 565 int enic_alloc_wq(struct enic *enic, uint16_t queue_idx,
 566         unsigned int socket_id, uint16_t nb_desc)
 567 {
 568         int err;
 569         struct vnic_wq *wq = &enic->wq[queue_idx];
 570         unsigned int cq_index = enic_cq_wq(enic, queue_idx);
 571
 572         wq->socket_id = socket_id;
 573         if (nb_desc) {
 574                 if (nb_desc > enic->config.wq_desc_count) {
 575                         dev_warning(enic,
 576                                 "WQ %d - number of tx desc in cmd line (%d)"\
 577                                 "is greater than that in the UCSM/CIMC adapter"\
 578                                 "policy.  Applying the value in the adapter "\
 579                                 "policy (%d)\n",
 580                                 queue_idx, nb_desc, enic->config.wq_desc_count);
 581                 } else if (nb_desc != enic->config.wq_desc_count) {
 582                         enic->config.wq_desc_count = nb_desc;
 583                         dev_info(enic,
 584                                 "TX Queues - effective number of descs:%d\n",
 585                                 nb_desc);
 586                 }
 587         }
 588
 589         /* Allocate queue resources */
 590         err = vnic_wq_alloc(enic->vdev, &enic->wq[queue_idx], queue_idx,
 591                 enic->config.wq_desc_count,
 592                 sizeof(struct wq_enet_desc));
 593         if (err) {
 594                 dev_err(enic, "error in allocation of wq\n");
 595                 return err;
 596         }
 597
 598         err = vnic_cq_alloc(enic->vdev, &enic->cq[cq_index], cq_index,
 599                 socket_id, enic->config.wq_desc_count,
 600                 sizeof(struct cq_enet_wq_desc));
 601         if (err) {
 602                 vnic_wq_free(wq);
 603                 dev_err(enic, "error in allocation of cq for wq\n");
 604         }
 605
 606         return err;
 607 }
 608
 609 int enic_disable(struct enic *enic)
 610 {
 611         unsigned int i;
 612         int err;
 613
 614         vnic_intr_mask(&enic->intr);
 615         (void)vnic_intr_masked(&enic->intr); /* flush write */
 616
 617         vnic_dev_disable(enic->vdev);
 618
 619         enic_clsf_destroy(enic);
 620
 621         if (!enic_is_sriov_vf(enic))
 622                 vnic_dev_del_addr(enic->vdev, enic->mac_addr);
 623
 624         for (i = 0; i < enic->wq_count; i++) {
 625                 err = vnic_wq_disable(&enic->wq[i]);
 626                 if (err)
 627                         return err;
 628         }
 629         for (i = 0; i < enic->rq_count; i++) {
 630                 err = vnic_rq_disable(&enic->rq[i]);
 631                 if (err)
 632                         return err;
 633         }
 634
 635         vnic_dev_set_reset_flag(enic->vdev, 1);
 636         vnic_dev_notify_unset(enic->vdev);
 637
 638         for (i = 0; i < enic->wq_count; i++)
 639                 vnic_wq_clean(&enic->wq[i], enic_free_wq_buf);
 640
 641         for (i = 0; i < enic->rq_count; i++)
 642                 vnic_rq_clean(&enic->rq[i], enic_free_rq_buf);
 643         for (i = 0; i < enic->cq_count; i++)
 644                 vnic_cq_clean(&enic->cq[i]);
 645         vnic_intr_clean(&enic->intr);
 646
 647         return 0;
 648 }
 649
 650 static int enic_dev_wait(struct vnic_dev *vdev,
 651         int (*start)(struct vnic_dev *, int),
 652         int (*finished)(struct vnic_dev *, int *),
 653         int arg)
 654 {
 655         int done;
 656         int err;
 657         int i;
 658
 659         err = start(vdev, arg);
 660         if (err)
 661                 return err;
 662
 663         /* Wait for func to complete...2 seconds max */
 664         for (i = 0; i < 2000; i++) {
 665                 err = finished(vdev, &done);
 666                 if (err)
 667                         return err;
 668                 if (done)
 669                         return 0;
 670                 usleep(1000);
 671         }
 672         return -ETIMEDOUT;
 673 }
 674
 675 static int enic_dev_open(struct enic *enic)
 676 {
 677         int err;
 678
 679         err = enic_dev_wait(enic->vdev, vnic_dev_open,
 680                 vnic_dev_open_done, 0);
 681         if (err)
 682                 dev_err(enic_get_dev(enic),
 683                         "vNIC device open failed, err %d\n", err);
 684
 685         return err;
 686 }
 687
 688 static int enic_set_rsskey(struct enic *enic)
 689 {
 690         dma_addr_t rss_key_buf_pa;
 691         union vnic_rss_key *rss_key_buf_va = NULL;
 692         static union vnic_rss_key rss_key = {
 693                 .key = {
 694                         [0] = {.b = {85, 67, 83, 97, 119, 101, 115, 111, 109, 101}},
 695                         [1] = {.b = {80, 65, 76, 79, 117, 110, 105, 113, 117, 101}},
 696                         [2] = {.b = {76, 73, 78, 85, 88, 114, 111, 99, 107, 115}},
 697                         [3] = {.b = {69, 78, 73, 67, 105, 115, 99, 111, 111, 108}},
 698                 }
 699         };
 700         int err;
 701         u8 name[NAME_MAX];
 702
 703         snprintf((char *)name, NAME_MAX, "rss_key-%s", enic->bdf_name);
 704         rss_key_buf_va = enic_alloc_consistent(enic, sizeof(union vnic_rss_key),
 705                 &rss_key_buf_pa, name);
 706         if (!rss_key_buf_va)
 707                 return -ENOMEM;
 708
 709         rte_memcpy(rss_key_buf_va, &rss_key, sizeof(union vnic_rss_key));
 710
 711         err = enic_set_rss_key(enic,
 712                 rss_key_buf_pa,
 713                 sizeof(union vnic_rss_key));
 714
 715         enic_free_consistent(enic->pdev, sizeof(union vnic_rss_key),
 716                 rss_key_buf_va, rss_key_buf_pa);
 717
 718         return err;
 719 }
 720
 721 static int enic_set_rsscpu(struct enic *enic, u8 rss_hash_bits)
 722 {
 723         dma_addr_t rss_cpu_buf_pa;
 724         union vnic_rss_cpu *rss_cpu_buf_va = NULL;
 725         int i;
 726         int err;
 727         u8 name[NAME_MAX];
 728
 729         snprintf((char *)name, NAME_MAX, "rss_cpu-%s", enic->bdf_name);
 730         rss_cpu_buf_va = enic_alloc_consistent(enic, sizeof(union vnic_rss_cpu),
 731                 &rss_cpu_buf_pa, name);
 732         if (!rss_cpu_buf_va)
 733                 return -ENOMEM;
 734
 735         for (i = 0; i < (1 << rss_hash_bits); i++)
 736                 (*rss_cpu_buf_va).cpu[i/4].b[i%4] = i % enic->rq_count;
 737
 738         err = enic_set_rss_cpu(enic,
 739                 rss_cpu_buf_pa,
 740                 sizeof(union vnic_rss_cpu));
 741
 742         enic_free_consistent(enic->pdev, sizeof(union vnic_rss_cpu),
 743                 rss_cpu_buf_va, rss_cpu_buf_pa);
 744
 745         return err;
 746 }
 747
 748 static int enic_set_niccfg(struct enic *enic, u8 rss_default_cpu,
 749         u8 rss_hash_type, u8 rss_hash_bits, u8 rss_base_cpu, u8 rss_enable)
 750 {
 751         const u8 tso_ipid_split_en = 0;
 752         int err;
 753
 754         /* Enable VLAN tag stripping */
 755
 756         err = enic_set_nic_cfg(enic,
 757                 rss_default_cpu, rss_hash_type,
 758                 rss_hash_bits, rss_base_cpu,
 759                 rss_enable, tso_ipid_split_en,
 760                 enic->ig_vlan_strip_en);
 761
 762         return err;
 763 }
 764
 765 int enic_set_rss_nic_cfg(struct enic *enic)
 766 {
 767         const u8 rss_default_cpu = 0;
 768         const u8 rss_hash_type = NIC_CFG_RSS_HASH_TYPE_IPV4 |
 769             NIC_CFG_RSS_HASH_TYPE_TCP_IPV4 |
 770             NIC_CFG_RSS_HASH_TYPE_IPV6 |
 771             NIC_CFG_RSS_HASH_TYPE_TCP_IPV6;
 772         const u8 rss_hash_bits = 7;
 773         const u8 rss_base_cpu = 0;
 774         u8 rss_enable = ENIC_SETTING(enic, RSS) && (enic->rq_count > 1);
 775
 776         if (rss_enable) {
 777                 if (!enic_set_rsskey(enic)) {
 778                         if (enic_set_rsscpu(enic, rss_hash_bits)) {
 779                                 rss_enable = 0;
 780                                 dev_warning(enic, "RSS disabled, "\
 781                                         "Failed to set RSS cpu indirection table.");
 782                         }
 783                 } else {
 784                         rss_enable = 0;
 785                         dev_warning(enic,
 786                                 "RSS disabled, Failed to set RSS key.\n");
 787                 }
 788         }
 789
 790         return enic_set_niccfg(enic, rss_default_cpu, rss_hash_type,
 791                 rss_hash_bits, rss_base_cpu, rss_enable);
 792 }
 793
 794 int enic_setup_finish(struct enic *enic)
 795 {
 796         int ret;
 797
 798         ret = enic_set_rss_nic_cfg(enic);
 799         if (ret) {
 800                 dev_err(enic, "Failed to config nic, aborting.\n");
 801                 return -1;
 802         }
 803
 804         vnic_dev_add_addr(enic->vdev, enic->mac_addr);
 805
 806         /* Default conf */
 807         vnic_dev_packet_filter(enic->vdev,
 808                 1 /* directed  */,
 809                 1 /* multicast */,
 810                 1 /* broadcast */,
 811                 0 /* promisc   */,
 812                 1 /* allmulti  */);
 813
 814         enic->promisc = 0;
 815         enic->allmulti = 1;
 816
 817         return 0;
 818 }
 819
 820 void enic_add_packet_filter(struct enic *enic)
 821 {
 822         /* Args -> directed, multicast, broadcast, promisc, allmulti */
 823         vnic_dev_packet_filter(enic->vdev, 1, 1, 1,
 824                 enic->promisc, enic->allmulti);
 825 }
 826
 827 int enic_get_link_status(struct enic *enic)
 828 {
 829         return vnic_dev_link_status(enic->vdev);
 830 }
 831
 832 static void enic_dev_deinit(struct enic *enic)
 833 {
 834         struct rte_eth_dev *eth_dev = enic->rte_dev;
 835
 836         rte_free(eth_dev->data->mac_addrs);
 837 }
 838
 839
 840 int enic_set_vnic_res(struct enic *enic)
 841 {
 842         struct rte_eth_dev *eth_dev = enic->rte_dev;
 843
 844         if ((enic->rq_count < eth_dev->data->nb_rx_queues) ||
 845                 (enic->wq_count < eth_dev->data->nb_tx_queues)) {
 846                 dev_err(dev, "Not enough resources configured, aborting\n");
 847                 return -1;
 848         }
 849
 850         enic->rq_count = eth_dev->data->nb_rx_queues;
 851         enic->wq_count = eth_dev->data->nb_tx_queues;
 852         if (enic->cq_count < (enic->rq_count + enic->wq_count)) {
 853                 dev_err(dev, "Not enough resources configured, aborting\n");
 854                 return -1;
 855         }
 856
 857         enic->cq_count = enic->rq_count + enic->wq_count;
 858         return 0;
 859 }
 860
 861 static int enic_dev_init(struct enic *enic)
 862 {
 863         int err;
 864         struct rte_eth_dev *eth_dev = enic->rte_dev;
 865
 866         vnic_dev_intr_coal_timer_info_default(enic->vdev);
 867
 868         /* Get vNIC configuration
 869         */
 870         err = enic_get_vnic_config(enic);
 871         if (err) {
 872                 dev_err(dev, "Get vNIC configuration failed, aborting\n");
 873                 return err;
 874         }
 875
 876         eth_dev->data->mac_addrs = rte_zmalloc("enic_mac_addr", ETH_ALEN, 0);
 877         if (!eth_dev->data->mac_addrs) {
 878                 dev_err(enic, "mac addr storage alloc failed, aborting.\n");
 879                 return -1;
 880         }
 881         ether_addr_copy((struct ether_addr *) enic->mac_addr,
 882                 &eth_dev->data->mac_addrs[0]);
 883
 884
 885         /* Get available resource counts
 886         */
 887         enic_get_res_counts(enic);
 888
 889         vnic_dev_set_reset_flag(enic->vdev, 0);
 890
 891         return 0;
 892
 893 }
 894
 895 int enic_probe(struct enic *enic)
 896 {
 897         struct rte_pci_device *pdev = enic->pdev;
 898         int err = -1;
 899
 900         dev_debug(enic, " Initializing ENIC PMD version %s\n", DRV_VERSION);
 901
 902         enic->bar0.vaddr = (void *)pdev->mem_resource[0].addr;
 903         enic->bar0.len = pdev->mem_resource[0].len;
 904
 905         /* Register vNIC device */
 906         enic->vdev = vnic_dev_register(NULL, enic, enic->pdev, &enic->bar0, 1);
 907         if (!enic->vdev) {
 908                 dev_err(enic, "vNIC registration failed, aborting\n");
 909                 goto err_out;
 910         }
 911
 912         vnic_register_cbacks(enic->vdev,
 913                 enic_alloc_consistent,
 914                 enic_free_consistent);
 915
 916         /* Issue device open to get device in known state */
 917         err = enic_dev_open(enic);
 918         if (err) {
 919                 dev_err(enic, "vNIC dev open failed, aborting\n");
 920                 goto err_out_unregister;
 921         }
 922
 923         /* Set ingress vlan rewrite mode before vnic initialization */
 924         err = vnic_dev_set_ig_vlan_rewrite_mode(enic->vdev,
 925                 IG_VLAN_REWRITE_MODE_PASS_THRU);
 926         if (err) {
 927                 dev_err(enic,
 928                         "Failed to set ingress vlan rewrite mode, aborting.\n");
 929                 goto err_out_dev_close;
 930         }
 931
 932         /* Issue device init to initialize the vnic-to-switch link.
 933          * We'll start with carrier off and wait for link UP
 934          * notification later to turn on carrier.  We don't need
 935          * to wait here for the vnic-to-switch link initialization
 936          * to complete; link UP notification is the indication that
 937          * the process is complete.
 938          */
 939
 940         err = vnic_dev_init(enic->vdev, 0);
 941         if (err) {
 942                 dev_err(enic, "vNIC dev init failed, aborting\n");
 943                 goto err_out_dev_close;
 944         }
 945
 946         err = enic_dev_init(enic);
 947         if (err) {
 948                 dev_err(enic, "Device initialization failed, aborting\n");
 949                 goto err_out_dev_close;
 950         }
 951
 952         return 0;
 953
 954 err_out_dev_close:
 955         vnic_dev_close(enic->vdev);
 956 err_out_unregister:
 957         vnic_dev_unregister(enic->vdev);
 958 err_out:
 959         return err;
 960 }
 961
 962 void enic_remove(struct enic *enic)
 963 {
 964         enic_dev_deinit(enic);
 965         vnic_dev_close(enic->vdev);
 966         vnic_dev_unregister(enic->vdev);
 967 }