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
  62 static inline int enic_is_sriov_vf(struct enic *enic)
  63 {
  64         return enic->pdev->id.device_id == PCI_DEVICE_ID_CISCO_VIC_ENET_VF;
  65 }
  66
  67 static int is_zero_addr(uint8_t *addr)
  68 {
  69         return !(addr[0] |  addr[1] | addr[2] | addr[3] | addr[4] | addr[5]);
  70 }
  71
  72 static int is_mcast_addr(uint8_t *addr)
  73 {
  74         return addr[0] & 1;
  75 }
  76
  77 static int is_eth_addr_valid(uint8_t *addr)
  78 {
  79         return !is_mcast_addr(addr) && !is_zero_addr(addr);
  80 }
  81
  82 static void
  83 enic_rxmbuf_queue_release(struct enic *enic, struct vnic_rq *rq)
  84 {
  85         uint16_t i;
  86
  87         if (!rq || !rq->mbuf_ring) {
  88                 dev_debug(enic, "Pointer to rq or mbuf_ring is NULL");
  89                 return;
  90         }
  91
  92         for (i = 0; i < enic->config.rq_desc_count; i++) {
  93                 if (rq->mbuf_ring[i]) {
  94                         rte_pktmbuf_free_seg(rq->mbuf_ring[i]);
  95                         rq->mbuf_ring[i] = NULL;
  96                 }
  97         }
  98 }
  99
 100 void enic_set_hdr_split_size(struct enic *enic, u16 split_hdr_size)
 101 {
 102         vnic_set_hdr_split_size(enic->vdev, split_hdr_size);
 103 }
 104
 105 void enic_free_wq_buf(__rte_unused struct vnic_wq *wq, struct vnic_wq_buf *buf)
 106 {
 107         struct rte_mbuf *mbuf = (struct rte_mbuf *)buf->mb;
 108
 109         rte_mempool_put(mbuf->pool, mbuf);
 110         buf->mb = NULL;
 111 }
 112
 113 static void enic_log_q_error(struct enic *enic)
 114 {
 115         unsigned int i;
 116         u32 error_status;
 117
 118         for (i = 0; i < enic->wq_count; i++) {
 119                 error_status = vnic_wq_error_status(&enic->wq[i]);
 120                 if (error_status)
 121                         dev_err(enic, "WQ[%d] error_status %d\n", i,
 122                                 error_status);
 123         }
 124
 125         for (i = 0; i < enic->rq_count; i++) {
 126                 error_status = vnic_rq_error_status(&enic->rq[i]);
 127                 if (error_status)
 128                         dev_err(enic, "RQ[%d] error_status %d\n", i,
 129                                 error_status);
 130         }
 131 }
 132
 133 static void enic_clear_soft_stats(struct enic *enic)
 134 {
 135         struct enic_soft_stats *soft_stats = &enic->soft_stats;
 136         rte_atomic64_clear(&soft_stats->rx_nombuf);
 137         rte_atomic64_clear(&soft_stats->rx_packet_errors);
 138 }
 139
 140 static void enic_init_soft_stats(struct enic *enic)
 141 {
 142         struct enic_soft_stats *soft_stats = &enic->soft_stats;
 143         rte_atomic64_init(&soft_stats->rx_nombuf);
 144         rte_atomic64_init(&soft_stats->rx_packet_errors);
 145         enic_clear_soft_stats(enic);
 146 }
 147
 148 void enic_dev_stats_clear(struct enic *enic)
 149 {
 150         if (vnic_dev_stats_clear(enic->vdev))
 151                 dev_err(enic, "Error in clearing stats\n");
 152         enic_clear_soft_stats(enic);
 153 }
 154
 155 void enic_dev_stats_get(struct enic *enic, struct rte_eth_stats *r_stats)
 156 {
 157         struct vnic_stats *stats;
 158         struct enic_soft_stats *soft_stats = &enic->soft_stats;
 159         int64_t rx_truncated;
 160         uint64_t rx_packet_errors;
 161
 162         if (vnic_dev_stats_dump(enic->vdev, &stats)) {
 163                 dev_err(enic, "Error in getting stats\n");
 164                 return;
 165         }
 166
 167         /* The number of truncated packets can only be calculated by
 168          * subtracting a hardware counter from error packets received by
 169          * the driver. Note: this causes transient inaccuracies in the
 170          * ipackets count. Also, the length of truncated packets are
 171          * counted in ibytes even though truncated packets are dropped
 172          * which can make ibytes be slightly higher than it should be.
 173          */
 174         rx_packet_errors = rte_atomic64_read(&soft_stats->rx_packet_errors);
 175         rx_truncated = rx_packet_errors - stats->rx.rx_errors;
 176
 177         r_stats->ipackets = stats->rx.rx_frames_ok - rx_truncated;
 178         r_stats->opackets = stats->tx.tx_frames_ok;
 179
 180         r_stats->ibytes = stats->rx.rx_bytes_ok;
 181         r_stats->obytes = stats->tx.tx_bytes_ok;
 182
 183         r_stats->ierrors = stats->rx.rx_errors + stats->rx.rx_drop;
 184         r_stats->oerrors = stats->tx.tx_errors;
 185
 186         r_stats->imissed = stats->rx.rx_no_bufs + rx_truncated;
 187
 188         r_stats->rx_nombuf = rte_atomic64_read(&soft_stats->rx_nombuf);
 189 }
 190
 191 void enic_del_mac_address(struct enic *enic)
 192 {
 193         if (vnic_dev_del_addr(enic->vdev, enic->mac_addr))
 194                 dev_err(enic, "del mac addr failed\n");
 195 }
 196
 197 void enic_set_mac_address(struct enic *enic, uint8_t *mac_addr)
 198 {
 199         int err;
 200
 201         if (!is_eth_addr_valid(mac_addr)) {
 202                 dev_err(enic, "invalid mac address\n");
 203                 return;
 204         }
 205
 206         err = vnic_dev_del_addr(enic->vdev, mac_addr);
 207         if (err) {
 208                 dev_err(enic, "del mac addr failed\n");
 209                 return;
 210         }
 211
 212         ether_addr_copy((struct ether_addr *)mac_addr,
 213                 (struct ether_addr *)enic->mac_addr);
 214
 215         err = vnic_dev_add_addr(enic->vdev, mac_addr);
 216         if (err) {
 217                 dev_err(enic, "add mac addr failed\n");
 218                 return;
 219         }
 220 }
 221
 222 static void
 223 enic_free_rq_buf(struct rte_mbuf **mbuf)
 224 {
 225         if (*mbuf == NULL)
 226                 return;
 227
 228         rte_pktmbuf_free(*mbuf);
 229         mbuf = NULL;
 230 }
 231
 232 void enic_init_vnic_resources(struct enic *enic)
 233 {
 234         unsigned int error_interrupt_enable = 1;
 235         unsigned int error_interrupt_offset = 0;
 236         unsigned int index = 0;
 237         unsigned int cq_idx;
 238
 239         for (index = 0; index < enic->rq_count; index++) {
 240                 vnic_rq_init(&enic->rq[index],
 241                         enic_cq_rq(enic, index),
 242                         error_interrupt_enable,
 243                         error_interrupt_offset);
 244
 245                 cq_idx = enic_cq_rq(enic, index);
 246                 vnic_cq_init(&enic->cq[cq_idx],
 247                         0 /* flow_control_enable */,
 248                         1 /* color_enable */,
 249                         0 /* cq_head */,
 250                         0 /* cq_tail */,
 251                         1 /* cq_tail_color */,
 252                         0 /* interrupt_enable */,
 253                         1 /* cq_entry_enable */,
 254                         0 /* cq_message_enable */,
 255                         0 /* interrupt offset */,
 256                         0 /* cq_message_addr */);
 257         }
 258
 259         for (index = 0; index < enic->wq_count; index++) {
 260                 vnic_wq_init(&enic->wq[index],
 261                         enic_cq_wq(enic, index),
 262                         error_interrupt_enable,
 263                         error_interrupt_offset);
 264
 265                 cq_idx = enic_cq_wq(enic, index);
 266                 vnic_cq_init(&enic->cq[cq_idx],
 267                         0 /* flow_control_enable */,
 268                         1 /* color_enable */,
 269                         0 /* cq_head */,
 270                         0 /* cq_tail */,
 271                         1 /* cq_tail_color */,
 272                         0 /* interrupt_enable */,
 273                         0 /* cq_entry_enable */,
 274                         1 /* cq_message_enable */,
 275                         0 /* interrupt offset */,
 276                         (u64)enic->wq[index].cqmsg_rz->phys_addr);
 277         }
 278
 279         vnic_intr_init(&enic->intr,
 280                 enic->config.intr_timer_usec,
 281                 enic->config.intr_timer_type,
 282                 /*mask_on_assertion*/1);
 283 }
 284
 285
 286 static int
 287 enic_alloc_rx_queue_mbufs(struct enic *enic, struct vnic_rq *rq)
 288 {
 289         struct rte_mbuf *mb;
 290         struct rq_enet_desc *rqd = rq->ring.descs;
 291         unsigned i;
 292         dma_addr_t dma_addr;
 293
 294         dev_debug(enic, "queue %u, allocating %u rx queue mbufs\n", rq->index,
 295                   rq->ring.desc_count);
 296
 297         for (i = 0; i < rq->ring.desc_count; i++, rqd++) {
 298                 mb = rte_mbuf_raw_alloc(rq->mp);
 299                 if (mb == NULL) {
 300                         dev_err(enic, "RX mbuf alloc failed queue_id=%u\n",
 301                         (unsigned)rq->index);
 302                         return -ENOMEM;
 303                 }
 304
 305                 dma_addr = (dma_addr_t)(mb->buf_physaddr
 306                            + RTE_PKTMBUF_HEADROOM);
 307
 308                 rq_enet_desc_enc(rqd, dma_addr, RQ_ENET_TYPE_ONLY_SOP,
 309                                  mb->buf_len - RTE_PKTMBUF_HEADROOM);
 310                 rq->mbuf_ring[i] = mb;
 311         }
 312
 313         /* make sure all prior writes are complete before doing the PIO write */
 314         rte_rmb();
 315
 316         /* Post all but the last 2 cache lines' worth of descriptors */
 317         rq->posted_index = rq->ring.desc_count - (2 * RTE_CACHE_LINE_SIZE
 318                         / sizeof(struct rq_enet_desc));
 319         rq->rx_nb_hold = 0;
 320
 321         dev_debug(enic, "port=%u, qidx=%u, Write %u posted idx, %u sw held\n",
 322                 enic->port_id, rq->index, rq->posted_index, rq->rx_nb_hold);
 323         iowrite32(rq->posted_index, &rq->ctrl->posted_index);
 324         rte_rmb();
 325
 326         return 0;
 327
 328 }
 329
 330 static void *
 331 enic_alloc_consistent(__rte_unused void *priv, size_t size,
 332         dma_addr_t *dma_handle, u8 *name)
 333 {
 334         void *vaddr;
 335         const struct rte_memzone *rz;
 336         *dma_handle = 0;
 337
 338         rz = rte_memzone_reserve_aligned((const char *)name,
 339                                          size, SOCKET_ID_ANY, 0, ENIC_ALIGN);
 340         if (!rz) {
 341                 pr_err("%s : Failed to allocate memory requested for %s\n",
 342                         __func__, name);
 343                 return NULL;
 344         }
 345
 346         vaddr = rz->addr;
 347         *dma_handle = (dma_addr_t)rz->phys_addr;
 348
 349         return vaddr;
 350 }
 351
 352 static void
 353 enic_free_consistent(__rte_unused struct rte_pci_device *hwdev,
 354         __rte_unused size_t size,
 355         __rte_unused void *vaddr,
 356         __rte_unused dma_addr_t dma_handle)
 357 {
 358         /* Nothing to be done */
 359 }
 360
 361 static void
 362 enic_intr_handler(__rte_unused struct rte_intr_handle *handle,
 363         void *arg)
 364 {
 365         struct enic *enic = pmd_priv((struct rte_eth_dev *)arg);
 366
 367         vnic_intr_return_all_credits(&enic->intr);
 368
 369         enic_log_q_error(enic);
 370 }
 371
 372 int enic_enable(struct enic *enic)
 373 {
 374         unsigned int index;
 375         int err;
 376         struct rte_eth_dev *eth_dev = enic->rte_dev;
 377
 378         eth_dev->data->dev_link.link_speed = vnic_dev_port_speed(enic->vdev);
 379         eth_dev->data->dev_link.link_duplex = ETH_LINK_FULL_DUPLEX;
 380         vnic_dev_notify_set(enic->vdev, -1); /* No Intr for notify */
 381
 382         if (enic_clsf_init(enic))
 383                 dev_warning(enic, "Init of hash table for clsf failed."\
 384                         "Flow director feature will not work\n");
 385
 386         for (index = 0; index < enic->rq_count; index++) {
 387                 err = enic_alloc_rx_queue_mbufs(enic, &enic->rq[index]);
 388                 if (err) {
 389                         dev_err(enic, "Failed to alloc RX queue mbufs\n");
 390                         return err;
 391                 }
 392         }
 393
 394         for (index = 0; index < enic->wq_count; index++)
 395                 vnic_wq_enable(&enic->wq[index]);
 396         for (index = 0; index < enic->rq_count; index++)
 397                 vnic_rq_enable(&enic->rq[index]);
 398
 399         vnic_dev_enable_wait(enic->vdev);
 400
 401         /* Register and enable error interrupt */
 402         rte_intr_callback_register(&(enic->pdev->intr_handle),
 403                 enic_intr_handler, (void *)enic->rte_dev);
 404
 405         rte_intr_enable(&(enic->pdev->intr_handle));
 406         vnic_intr_unmask(&enic->intr);
 407
 408         return 0;
 409 }
 410
 411 int enic_alloc_intr_resources(struct enic *enic)
 412 {
 413         int err;
 414
 415         dev_info(enic, "vNIC resources used:  "\
 416                 "wq %d rq %d cq %d intr %d\n",
 417                 enic->wq_count, enic->rq_count,
 418                 enic->cq_count, enic->intr_count);
 419
 420         err = vnic_intr_alloc(enic->vdev, &enic->intr, 0);
 421         if (err)
 422                 enic_free_vnic_resources(enic);
 423
 424         return err;
 425 }
 426
 427 void enic_free_rq(void *rxq)
 428 {
 429         struct vnic_rq *rq = (struct vnic_rq *)rxq;
 430         struct enic *enic = vnic_dev_priv(rq->vdev);
 431
 432         enic_rxmbuf_queue_release(enic, rq);
 433         rte_free(rq->mbuf_ring);
 434         rq->mbuf_ring = NULL;
 435         vnic_rq_free(rq);
 436         vnic_cq_free(&enic->cq[rq->index]);
 437 }
 438
 439 void enic_start_wq(struct enic *enic, uint16_t queue_idx)
 440 {
 441         vnic_wq_enable(&enic->wq[queue_idx]);
 442 }
 443
 444 int enic_stop_wq(struct enic *enic, uint16_t queue_idx)
 445 {
 446         return vnic_wq_disable(&enic->wq[queue_idx]);
 447 }
 448
 449 void enic_start_rq(struct enic *enic, uint16_t queue_idx)
 450 {
 451         vnic_rq_enable(&enic->rq[queue_idx]);
 452 }
 453
 454 int enic_stop_rq(struct enic *enic, uint16_t queue_idx)
 455 {
 456         return vnic_rq_disable(&enic->rq[queue_idx]);
 457 }
 458
 459 int enic_alloc_rq(struct enic *enic, uint16_t queue_idx,
 460         unsigned int socket_id, struct rte_mempool *mp,
 461         uint16_t nb_desc)
 462 {
 463         int rc;
 464         struct vnic_rq *rq = &enic->rq[queue_idx];
 465
 466         rq->socket_id = socket_id;
 467         rq->mp = mp;
 468
 469         if (nb_desc) {
 470                 if (nb_desc > enic->config.rq_desc_count) {
 471                         dev_warning(enic,
 472                                 "RQ %d - number of rx desc in cmd line (%d)"\
 473                                 "is greater than that in the UCSM/CIMC adapter"\
 474                                 "policy.  Applying the value in the adapter "\
 475                                 "policy (%d).\n",
 476                                 queue_idx, nb_desc, enic->config.rq_desc_count);
 477                         nb_desc = enic->config.rq_desc_count;
 478                 }
 479                 dev_info(enic, "RX Queues - effective number of descs:%d\n",
 480                          nb_desc);
 481         }
 482
 483         /* Allocate queue resources */
 484         rc = vnic_rq_alloc(enic->vdev, rq, queue_idx,
 485                 nb_desc, sizeof(struct rq_enet_desc));
 486         if (rc) {
 487                 dev_err(enic, "error in allocation of rq\n");
 488                 goto err_exit;
 489         }
 490
 491         rc = vnic_cq_alloc(enic->vdev, &enic->cq[queue_idx], queue_idx,
 492                 socket_id, nb_desc,
 493                 sizeof(struct cq_enet_rq_desc));
 494         if (rc) {
 495                 dev_err(enic, "error in allocation of cq for rq\n");
 496                 goto err_free_rq_exit;
 497         }
 498
 499         /* Allocate the mbuf ring */
 500         rq->mbuf_ring = (struct rte_mbuf **)rte_zmalloc_socket("rq->mbuf_ring",
 501                         sizeof(struct rte_mbuf *) * nb_desc,
 502                         RTE_CACHE_LINE_SIZE, rq->socket_id);
 503
 504         if (rq->mbuf_ring != NULL)
 505                 return 0;
 506
 507         /* cleanup on error */
 508         vnic_cq_free(&enic->cq[queue_idx]);
 509 err_free_rq_exit:
 510         vnic_rq_free(rq);
 511 err_exit:
 512         return -ENOMEM;
 513 }
 514
 515 void enic_free_wq(void *txq)
 516 {
 517         struct vnic_wq *wq = (struct vnic_wq *)txq;
 518         struct enic *enic = vnic_dev_priv(wq->vdev);
 519
 520         rte_memzone_free(wq->cqmsg_rz);
 521         vnic_wq_free(wq);
 522         vnic_cq_free(&enic->cq[enic->rq_count + wq->index]);
 523 }
 524
 525 int enic_alloc_wq(struct enic *enic, uint16_t queue_idx,
 526         unsigned int socket_id, uint16_t nb_desc)
 527 {
 528         int err;
 529         struct vnic_wq *wq = &enic->wq[queue_idx];
 530         unsigned int cq_index = enic_cq_wq(enic, queue_idx);
 531         char name[NAME_MAX];
 532         static int instance;
 533
 534         wq->socket_id = socket_id;
 535         if (nb_desc) {
 536                 if (nb_desc > enic->config.wq_desc_count) {
 537                         dev_warning(enic,
 538                                 "WQ %d - number of tx desc in cmd line (%d)"\
 539                                 "is greater than that in the UCSM/CIMC adapter"\
 540                                 "policy.  Applying the value in the adapter "\
 541                                 "policy (%d)\n",
 542                                 queue_idx, nb_desc, enic->config.wq_desc_count);
 543                 } else if (nb_desc != enic->config.wq_desc_count) {
 544                         enic->config.wq_desc_count = nb_desc;
 545                         dev_info(enic,
 546                                 "TX Queues - effective number of descs:%d\n",
 547                                 nb_desc);
 548                 }
 549         }
 550
 551         /* Allocate queue resources */
 552         err = vnic_wq_alloc(enic->vdev, &enic->wq[queue_idx], queue_idx,
 553                 enic->config.wq_desc_count,
 554                 sizeof(struct wq_enet_desc));
 555         if (err) {
 556                 dev_err(enic, "error in allocation of wq\n");
 557                 return err;
 558         }
 559
 560         err = vnic_cq_alloc(enic->vdev, &enic->cq[cq_index], cq_index,
 561                 socket_id, enic->config.wq_desc_count,
 562                 sizeof(struct cq_enet_wq_desc));
 563         if (err) {
 564                 vnic_wq_free(wq);
 565                 dev_err(enic, "error in allocation of cq for wq\n");
 566         }
 567
 568         /* setup up CQ message */
 569         snprintf((char *)name, sizeof(name),
 570                  "vnic_cqmsg-%s-%d-%d", enic->bdf_name, queue_idx,
 571                 instance++);
 572
 573         wq->cqmsg_rz = rte_memzone_reserve_aligned((const char *)name,
 574                                                    sizeof(uint32_t),
 575                                                    SOCKET_ID_ANY, 0,
 576                                                    ENIC_ALIGN);
 577         if (!wq->cqmsg_rz)
 578                 return -ENOMEM;
 579
 580         return err;
 581 }
 582
 583 int enic_disable(struct enic *enic)
 584 {
 585         unsigned int i;
 586         int err;
 587
 588         vnic_intr_mask(&enic->intr);
 589         (void)vnic_intr_masked(&enic->intr); /* flush write */
 590
 591         vnic_dev_disable(enic->vdev);
 592
 593         enic_clsf_destroy(enic);
 594
 595         if (!enic_is_sriov_vf(enic))
 596                 vnic_dev_del_addr(enic->vdev, enic->mac_addr);
 597
 598         for (i = 0; i < enic->wq_count; i++) {
 599                 err = vnic_wq_disable(&enic->wq[i]);
 600                 if (err)
 601                         return err;
 602         }
 603         for (i = 0; i < enic->rq_count; i++) {
 604                 err = vnic_rq_disable(&enic->rq[i]);
 605                 if (err)
 606                         return err;
 607         }
 608
 609         vnic_dev_set_reset_flag(enic->vdev, 1);
 610         vnic_dev_notify_unset(enic->vdev);
 611
 612         for (i = 0; i < enic->wq_count; i++)
 613                 vnic_wq_clean(&enic->wq[i], enic_free_wq_buf);
 614
 615         for (i = 0; i < enic->rq_count; i++)
 616                 vnic_rq_clean(&enic->rq[i], enic_free_rq_buf);
 617         for (i = 0; i < enic->cq_count; i++)
 618                 vnic_cq_clean(&enic->cq[i]);
 619         vnic_intr_clean(&enic->intr);
 620
 621         return 0;
 622 }
 623
 624 static int enic_dev_wait(struct vnic_dev *vdev,
 625         int (*start)(struct vnic_dev *, int),
 626         int (*finished)(struct vnic_dev *, int *),
 627         int arg)
 628 {
 629         int done;
 630         int err;
 631         int i;
 632
 633         err = start(vdev, arg);
 634         if (err)
 635                 return err;
 636
 637         /* Wait for func to complete...2 seconds max */
 638         for (i = 0; i < 2000; i++) {
 639                 err = finished(vdev, &done);
 640                 if (err)
 641                         return err;
 642                 if (done)
 643                         return 0;
 644                 usleep(1000);
 645         }
 646         return -ETIMEDOUT;
 647 }
 648
 649 static int enic_dev_open(struct enic *enic)
 650 {
 651         int err;
 652
 653         err = enic_dev_wait(enic->vdev, vnic_dev_open,
 654                 vnic_dev_open_done, 0);
 655         if (err)
 656                 dev_err(enic_get_dev(enic),
 657                         "vNIC device open failed, err %d\n", err);
 658
 659         return err;
 660 }
 661
 662 static int enic_set_rsskey(struct enic *enic)
 663 {
 664         dma_addr_t rss_key_buf_pa;
 665         union vnic_rss_key *rss_key_buf_va = NULL;
 666         static union vnic_rss_key rss_key = {
 667                 .key = {
 668                         [0] = {.b = {85, 67, 83, 97, 119, 101, 115, 111, 109, 101}},
 669                         [1] = {.b = {80, 65, 76, 79, 117, 110, 105, 113, 117, 101}},
 670                         [2] = {.b = {76, 73, 78, 85, 88, 114, 111, 99, 107, 115}},
 671                         [3] = {.b = {69, 78, 73, 67, 105, 115, 99, 111, 111, 108}},
 672                 }
 673         };
 674         int err;
 675         u8 name[NAME_MAX];
 676
 677         snprintf((char *)name, NAME_MAX, "rss_key-%s", enic->bdf_name);
 678         rss_key_buf_va = enic_alloc_consistent(enic, sizeof(union vnic_rss_key),
 679                 &rss_key_buf_pa, name);
 680         if (!rss_key_buf_va)
 681                 return -ENOMEM;
 682
 683         rte_memcpy(rss_key_buf_va, &rss_key, sizeof(union vnic_rss_key));
 684
 685         err = enic_set_rss_key(enic,
 686                 rss_key_buf_pa,
 687                 sizeof(union vnic_rss_key));
 688
 689         enic_free_consistent(enic->pdev, sizeof(union vnic_rss_key),
 690                 rss_key_buf_va, rss_key_buf_pa);
 691
 692         return err;
 693 }
 694
 695 static int enic_set_rsscpu(struct enic *enic, u8 rss_hash_bits)
 696 {
 697         dma_addr_t rss_cpu_buf_pa;
 698         union vnic_rss_cpu *rss_cpu_buf_va = NULL;
 699         int i;
 700         int err;
 701         u8 name[NAME_MAX];
 702
 703         snprintf((char *)name, NAME_MAX, "rss_cpu-%s", enic->bdf_name);
 704         rss_cpu_buf_va = enic_alloc_consistent(enic, sizeof(union vnic_rss_cpu),
 705                 &rss_cpu_buf_pa, name);
 706         if (!rss_cpu_buf_va)
 707                 return -ENOMEM;
 708
 709         for (i = 0; i < (1 << rss_hash_bits); i++)
 710                 (*rss_cpu_buf_va).cpu[i/4].b[i%4] = i % enic->rq_count;
 711
 712         err = enic_set_rss_cpu(enic,
 713                 rss_cpu_buf_pa,
 714                 sizeof(union vnic_rss_cpu));
 715
 716         enic_free_consistent(enic->pdev, sizeof(union vnic_rss_cpu),
 717                 rss_cpu_buf_va, rss_cpu_buf_pa);
 718
 719         return err;
 720 }
 721
 722 static int enic_set_niccfg(struct enic *enic, u8 rss_default_cpu,
 723         u8 rss_hash_type, u8 rss_hash_bits, u8 rss_base_cpu, u8 rss_enable)
 724 {
 725         const u8 tso_ipid_split_en = 0;
 726         int err;
 727
 728         /* Enable VLAN tag stripping */
 729
 730         err = enic_set_nic_cfg(enic,
 731                 rss_default_cpu, rss_hash_type,
 732                 rss_hash_bits, rss_base_cpu,
 733                 rss_enable, tso_ipid_split_en,
 734                 enic->ig_vlan_strip_en);
 735
 736         return err;
 737 }
 738
 739 int enic_set_rss_nic_cfg(struct enic *enic)
 740 {
 741         const u8 rss_default_cpu = 0;
 742         const u8 rss_hash_type = NIC_CFG_RSS_HASH_TYPE_IPV4 |
 743             NIC_CFG_RSS_HASH_TYPE_TCP_IPV4 |
 744             NIC_CFG_RSS_HASH_TYPE_IPV6 |
 745             NIC_CFG_RSS_HASH_TYPE_TCP_IPV6;
 746         const u8 rss_hash_bits = 7;
 747         const u8 rss_base_cpu = 0;
 748         u8 rss_enable = ENIC_SETTING(enic, RSS) && (enic->rq_count > 1);
 749
 750         if (rss_enable) {
 751                 if (!enic_set_rsskey(enic)) {
 752                         if (enic_set_rsscpu(enic, rss_hash_bits)) {
 753                                 rss_enable = 0;
 754                                 dev_warning(enic, "RSS disabled, "\
 755                                         "Failed to set RSS cpu indirection table.");
 756                         }
 757                 } else {
 758                         rss_enable = 0;
 759                         dev_warning(enic,
 760                                 "RSS disabled, Failed to set RSS key.\n");
 761                 }
 762         }
 763
 764         return enic_set_niccfg(enic, rss_default_cpu, rss_hash_type,
 765                 rss_hash_bits, rss_base_cpu, rss_enable);
 766 }
 767
 768 int enic_setup_finish(struct enic *enic)
 769 {
 770         int ret;
 771
 772         enic_init_soft_stats(enic);
 773
 774         ret = enic_set_rss_nic_cfg(enic);
 775         if (ret) {
 776                 dev_err(enic, "Failed to config nic, aborting.\n");
 777                 return -1;
 778         }
 779
 780         vnic_dev_add_addr(enic->vdev, enic->mac_addr);
 781
 782         /* Default conf */
 783         vnic_dev_packet_filter(enic->vdev,
 784                 1 /* directed  */,
 785                 1 /* multicast */,
 786                 1 /* broadcast */,
 787                 0 /* promisc   */,
 788                 1 /* allmulti  */);
 789
 790         enic->promisc = 0;
 791         enic->allmulti = 1;
 792
 793         return 0;
 794 }
 795
 796 void enic_add_packet_filter(struct enic *enic)
 797 {
 798         /* Args -> directed, multicast, broadcast, promisc, allmulti */
 799         vnic_dev_packet_filter(enic->vdev, 1, 1, 1,
 800                 enic->promisc, enic->allmulti);
 801 }
 802
 803 int enic_get_link_status(struct enic *enic)
 804 {
 805         return vnic_dev_link_status(enic->vdev);
 806 }
 807
 808 static void enic_dev_deinit(struct enic *enic)
 809 {
 810         struct rte_eth_dev *eth_dev = enic->rte_dev;
 811
 812         rte_free(eth_dev->data->mac_addrs);
 813 }
 814
 815
 816 int enic_set_vnic_res(struct enic *enic)
 817 {
 818         struct rte_eth_dev *eth_dev = enic->rte_dev;
 819
 820         if ((enic->rq_count < eth_dev->data->nb_rx_queues) ||
 821                 (enic->wq_count < eth_dev->data->nb_tx_queues)) {
 822                 dev_err(dev, "Not enough resources configured, aborting\n");
 823                 return -1;
 824         }
 825
 826         enic->rq_count = eth_dev->data->nb_rx_queues;
 827         enic->wq_count = eth_dev->data->nb_tx_queues;
 828         if (enic->cq_count < (enic->rq_count + enic->wq_count)) {
 829                 dev_err(dev, "Not enough resources configured, aborting\n");
 830                 return -1;
 831         }
 832
 833         enic->cq_count = enic->rq_count + enic->wq_count;
 834         return 0;
 835 }
 836
 837 static int enic_dev_init(struct enic *enic)
 838 {
 839         int err;
 840         struct rte_eth_dev *eth_dev = enic->rte_dev;
 841
 842         vnic_dev_intr_coal_timer_info_default(enic->vdev);
 843
 844         /* Get vNIC configuration
 845         */
 846         err = enic_get_vnic_config(enic);
 847         if (err) {
 848                 dev_err(dev, "Get vNIC configuration failed, aborting\n");
 849                 return err;
 850         }
 851
 852         eth_dev->data->mac_addrs = rte_zmalloc("enic_mac_addr", ETH_ALEN, 0);
 853         if (!eth_dev->data->mac_addrs) {
 854                 dev_err(enic, "mac addr storage alloc failed, aborting.\n");
 855                 return -1;
 856         }
 857         ether_addr_copy((struct ether_addr *) enic->mac_addr,
 858                 &eth_dev->data->mac_addrs[0]);
 859
 860
 861         /* Get available resource counts
 862         */
 863         enic_get_res_counts(enic);
 864
 865         vnic_dev_set_reset_flag(enic->vdev, 0);
 866
 867         return 0;
 868
 869 }
 870
 871 int enic_probe(struct enic *enic)
 872 {
 873         struct rte_pci_device *pdev = enic->pdev;
 874         int err = -1;
 875
 876         dev_debug(enic, " Initializing ENIC PMD version %s\n", DRV_VERSION);
 877
 878         enic->bar0.vaddr = (void *)pdev->mem_resource[0].addr;
 879         enic->bar0.len = pdev->mem_resource[0].len;
 880
 881         /* Register vNIC device */
 882         enic->vdev = vnic_dev_register(NULL, enic, enic->pdev, &enic->bar0, 1);
 883         if (!enic->vdev) {
 884                 dev_err(enic, "vNIC registration failed, aborting\n");
 885                 goto err_out;
 886         }
 887
 888         vnic_register_cbacks(enic->vdev,
 889                 enic_alloc_consistent,
 890                 enic_free_consistent);
 891
 892         /* Issue device open to get device in known state */
 893         err = enic_dev_open(enic);
 894         if (err) {
 895                 dev_err(enic, "vNIC dev open failed, aborting\n");
 896                 goto err_out_unregister;
 897         }
 898
 899         /* Set ingress vlan rewrite mode before vnic initialization */
 900         err = vnic_dev_set_ig_vlan_rewrite_mode(enic->vdev,
 901                 IG_VLAN_REWRITE_MODE_PASS_THRU);
 902         if (err) {
 903                 dev_err(enic,
 904                         "Failed to set ingress vlan rewrite mode, aborting.\n");
 905                 goto err_out_dev_close;
 906         }
 907
 908         /* Issue device init to initialize the vnic-to-switch link.
 909          * We'll start with carrier off and wait for link UP
 910          * notification later to turn on carrier.  We don't need
 911          * to wait here for the vnic-to-switch link initialization
 912          * to complete; link UP notification is the indication that
 913          * the process is complete.
 914          */
 915
 916         err = vnic_dev_init(enic->vdev, 0);
 917         if (err) {
 918                 dev_err(enic, "vNIC dev init failed, aborting\n");
 919                 goto err_out_dev_close;
 920         }
 921
 922         err = enic_dev_init(enic);
 923         if (err) {
 924                 dev_err(enic, "Device initialization failed, aborting\n");
 925                 goto err_out_dev_close;
 926         }
 927
 928         return 0;
 929
 930 err_out_dev_close:
 931         vnic_dev_close(enic->vdev);
 932 err_out_unregister:
 933         vnic_dev_unregister(enic->vdev);
 934 err_out:
 935         return err;
 936 }
 937
 938 void enic_remove(struct enic *enic)
 939 {
 940         enic_dev_deinit(enic);
 941         vnic_dev_close(enic->vdev);
 942         vnic_dev_unregister(enic->vdev);
 943 }