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 static void enic_clear_soft_stats(struct enic *enic)
 215 {
 216         struct enic_soft_stats *soft_stats = &enic->soft_stats;
 217         rte_atomic64_clear(&soft_stats->rx_nombuf);
 218         rte_atomic64_clear(&soft_stats->rx_packet_errors);
 219 }
 220
 221 static void enic_init_soft_stats(struct enic *enic)
 222 {
 223         struct enic_soft_stats *soft_stats = &enic->soft_stats;
 224         rte_atomic64_init(&soft_stats->rx_nombuf);
 225         rte_atomic64_init(&soft_stats->rx_packet_errors);
 226         enic_clear_soft_stats(enic);
 227 }
 228
 229 void enic_dev_stats_clear(struct enic *enic)
 230 {
 231         if (vnic_dev_stats_clear(enic->vdev))
 232                 dev_err(enic, "Error in clearing stats\n");
 233         enic_clear_soft_stats(enic);
 234 }
 235
 236 void enic_dev_stats_get(struct enic *enic, struct rte_eth_stats *r_stats)
 237 {
 238         struct vnic_stats *stats;
 239         struct enic_soft_stats *soft_stats = &enic->soft_stats;
 240         int64_t rx_truncated;
 241         uint64_t rx_packet_errors;
 242
 243         if (vnic_dev_stats_dump(enic->vdev, &stats)) {
 244                 dev_err(enic, "Error in getting stats\n");
 245                 return;
 246         }
 247
 248         /* The number of truncated packets can only be calculated by
 249          * subtracting a hardware counter from error packets received by
 250          * the driver. Note: this causes transient inaccuracies in the
 251          * ipackets count. Also, the length of truncated packets are
 252          * counted in ibytes even though truncated packets are dropped
 253          * which can make ibytes be slightly higher than it should be.
 254          */
 255         rx_packet_errors = rte_atomic64_read(&soft_stats->rx_packet_errors);
 256         rx_truncated = rx_packet_errors - stats->rx.rx_errors;
 257
 258         r_stats->ipackets = stats->rx.rx_frames_ok - rx_truncated;
 259         r_stats->opackets = stats->tx.tx_frames_ok;
 260
 261         r_stats->ibytes = stats->rx.rx_bytes_ok;
 262         r_stats->obytes = stats->tx.tx_bytes_ok;
 263
 264         r_stats->ierrors = stats->rx.rx_errors + stats->rx.rx_drop;
 265         r_stats->oerrors = stats->tx.tx_errors;
 266
 267         r_stats->imissed = stats->rx.rx_no_bufs + rx_truncated;
 268
 269         r_stats->rx_nombuf = rte_atomic64_read(&soft_stats->rx_nombuf);
 270 }
 271
 272 void enic_del_mac_address(struct enic *enic)
 273 {
 274         if (vnic_dev_del_addr(enic->vdev, enic->mac_addr))
 275                 dev_err(enic, "del mac addr failed\n");
 276 }
 277
 278 void enic_set_mac_address(struct enic *enic, uint8_t *mac_addr)
 279 {
 280         int err;
 281
 282         if (!is_eth_addr_valid(mac_addr)) {
 283                 dev_err(enic, "invalid mac address\n");
 284                 return;
 285         }
 286
 287         err = vnic_dev_del_addr(enic->vdev, mac_addr);
 288         if (err) {
 289                 dev_err(enic, "del mac addr failed\n");
 290                 return;
 291         }
 292
 293         ether_addr_copy((struct ether_addr *)mac_addr,
 294                 (struct ether_addr *)enic->mac_addr);
 295
 296         err = vnic_dev_add_addr(enic->vdev, mac_addr);
 297         if (err) {
 298                 dev_err(enic, "add mac addr failed\n");
 299                 return;
 300         }
 301 }
 302
 303 static void
 304 enic_free_rq_buf(struct rte_mbuf **mbuf)
 305 {
 306         if (*mbuf == NULL)
 307                 return;
 308
 309         rte_pktmbuf_free(*mbuf);
 310         mbuf = NULL;
 311 }
 312
 313 void enic_init_vnic_resources(struct enic *enic)
 314 {
 315         unsigned int error_interrupt_enable = 1;
 316         unsigned int error_interrupt_offset = 0;
 317         unsigned int index = 0;
 318
 319         for (index = 0; index < enic->rq_count; index++) {
 320                 vnic_rq_init(&enic->rq[index],
 321                         enic_cq_rq(enic, index),
 322                         error_interrupt_enable,
 323                         error_interrupt_offset);
 324         }
 325
 326         for (index = 0; index < enic->wq_count; index++) {
 327                 vnic_wq_init(&enic->wq[index],
 328                         enic_cq_wq(enic, index),
 329                         error_interrupt_enable,
 330                         error_interrupt_offset);
 331         }
 332
 333         vnic_dev_stats_clear(enic->vdev);
 334
 335         for (index = 0; index < enic->cq_count; index++) {
 336                 vnic_cq_init(&enic->cq[index],
 337                         0 /* flow_control_enable */,
 338                         1 /* color_enable */,
 339                         0 /* cq_head */,
 340                         0 /* cq_tail */,
 341                         1 /* cq_tail_color */,
 342                         0 /* interrupt_enable */,
 343                         1 /* cq_entry_enable */,
 344                         0 /* cq_message_enable */,
 345                         0 /* interrupt offset */,
 346                         0 /* cq_message_addr */);
 347         }
 348
 349         vnic_intr_init(&enic->intr,
 350                 enic->config.intr_timer_usec,
 351                 enic->config.intr_timer_type,
 352                 /*mask_on_assertion*/1);
 353 }
 354
 355
 356 static int
 357 enic_alloc_rx_queue_mbufs(struct enic *enic, struct vnic_rq *rq)
 358 {
 359         struct rte_mbuf *mb;
 360         struct rq_enet_desc *rqd = rq->ring.descs;
 361         unsigned i;
 362         dma_addr_t dma_addr;
 363
 364         dev_debug(enic, "queue %u, allocating %u rx queue mbufs\n", rq->index,
 365                   rq->ring.desc_count);
 366
 367         for (i = 0; i < rq->ring.desc_count; i++, rqd++) {
 368                 mb = rte_mbuf_raw_alloc(rq->mp);
 369                 if (mb == NULL) {
 370                         dev_err(enic, "RX mbuf alloc failed queue_id=%u\n",
 371                         (unsigned)rq->index);
 372                         return -ENOMEM;
 373                 }
 374
 375                 dma_addr = (dma_addr_t)(mb->buf_physaddr
 376                            + RTE_PKTMBUF_HEADROOM);
 377
 378                 rq_enet_desc_enc(rqd, dma_addr, RQ_ENET_TYPE_ONLY_SOP,
 379                                  mb->buf_len - RTE_PKTMBUF_HEADROOM);
 380                 rq->mbuf_ring[i] = mb;
 381         }
 382
 383         /* make sure all prior writes are complete before doing the PIO write */
 384         rte_rmb();
 385
 386         /* Post all but the last 2 cache lines' worth of descriptors */
 387         rq->posted_index = rq->ring.desc_count - (2 * RTE_CACHE_LINE_SIZE
 388                         / sizeof(struct rq_enet_desc));
 389         rq->rx_nb_hold = 0;
 390
 391         dev_debug(enic, "port=%u, qidx=%u, Write %u posted idx, %u sw held\n",
 392                 enic->port_id, rq->index, rq->posted_index, rq->rx_nb_hold);
 393         iowrite32(rq->posted_index, &rq->ctrl->posted_index);
 394         rte_rmb();
 395
 396         return 0;
 397
 398 }
 399
 400 static void *
 401 enic_alloc_consistent(__rte_unused void *priv, size_t size,
 402         dma_addr_t *dma_handle, u8 *name)
 403 {
 404         void *vaddr;
 405         const struct rte_memzone *rz;
 406         *dma_handle = 0;
 407
 408         rz = rte_memzone_reserve_aligned((const char *)name,
 409                                          size, SOCKET_ID_ANY, 0, ENIC_ALIGN);
 410         if (!rz) {
 411                 pr_err("%s : Failed to allocate memory requested for %s\n",
 412                         __func__, name);
 413                 return NULL;
 414         }
 415
 416         vaddr = rz->addr;
 417         *dma_handle = (dma_addr_t)rz->phys_addr;
 418
 419         return vaddr;
 420 }
 421
 422 static void
 423 enic_free_consistent(__rte_unused struct rte_pci_device *hwdev,
 424         __rte_unused size_t size,
 425         __rte_unused void *vaddr,
 426         __rte_unused dma_addr_t dma_handle)
 427 {
 428         /* Nothing to be done */
 429 }
 430
 431 static void
 432 enic_intr_handler(__rte_unused struct rte_intr_handle *handle,
 433         void *arg)
 434 {
 435         struct enic *enic = pmd_priv((struct rte_eth_dev *)arg);
 436
 437         vnic_intr_return_all_credits(&enic->intr);
 438
 439         enic_log_q_error(enic);
 440 }
 441
 442 int enic_enable(struct enic *enic)
 443 {
 444         unsigned int index;
 445         int err;
 446         struct rte_eth_dev *eth_dev = enic->rte_dev;
 447
 448         eth_dev->data->dev_link.link_speed = vnic_dev_port_speed(enic->vdev);
 449         eth_dev->data->dev_link.link_duplex = ETH_LINK_FULL_DUPLEX;
 450         vnic_dev_notify_set(enic->vdev, -1); /* No Intr for notify */
 451
 452         if (enic_clsf_init(enic))
 453                 dev_warning(enic, "Init of hash table for clsf failed."\
 454                         "Flow director feature will not work\n");
 455
 456         for (index = 0; index < enic->rq_count; index++) {
 457                 err = enic_alloc_rx_queue_mbufs(enic, &enic->rq[index]);
 458                 if (err) {
 459                         dev_err(enic, "Failed to alloc RX queue mbufs\n");
 460                         return err;
 461                 }
 462         }
 463
 464         for (index = 0; index < enic->wq_count; index++)
 465                 vnic_wq_enable(&enic->wq[index]);
 466         for (index = 0; index < enic->rq_count; index++)
 467                 vnic_rq_enable(&enic->rq[index]);
 468
 469         vnic_dev_enable_wait(enic->vdev);
 470
 471         /* Register and enable error interrupt */
 472         rte_intr_callback_register(&(enic->pdev->intr_handle),
 473                 enic_intr_handler, (void *)enic->rte_dev);
 474
 475         rte_intr_enable(&(enic->pdev->intr_handle));
 476         vnic_intr_unmask(&enic->intr);
 477
 478         return 0;
 479 }
 480
 481 int enic_alloc_intr_resources(struct enic *enic)
 482 {
 483         int err;
 484
 485         dev_info(enic, "vNIC resources used:  "\
 486                 "wq %d rq %d cq %d intr %d\n",
 487                 enic->wq_count, enic->rq_count,
 488                 enic->cq_count, enic->intr_count);
 489
 490         err = vnic_intr_alloc(enic->vdev, &enic->intr, 0);
 491         if (err)
 492                 enic_free_vnic_resources(enic);
 493
 494         return err;
 495 }
 496
 497 void enic_free_rq(void *rxq)
 498 {
 499         struct vnic_rq *rq = (struct vnic_rq *)rxq;
 500         struct enic *enic = vnic_dev_priv(rq->vdev);
 501
 502         enic_rxmbuf_queue_release(enic, rq);
 503         rte_free(rq->mbuf_ring);
 504         rq->mbuf_ring = NULL;
 505         vnic_rq_free(rq);
 506         vnic_cq_free(&enic->cq[rq->index]);
 507 }
 508
 509 void enic_start_wq(struct enic *enic, uint16_t queue_idx)
 510 {
 511         vnic_wq_enable(&enic->wq[queue_idx]);
 512 }
 513
 514 int enic_stop_wq(struct enic *enic, uint16_t queue_idx)
 515 {
 516         return vnic_wq_disable(&enic->wq[queue_idx]);
 517 }
 518
 519 void enic_start_rq(struct enic *enic, uint16_t queue_idx)
 520 {
 521         vnic_rq_enable(&enic->rq[queue_idx]);
 522 }
 523
 524 int enic_stop_rq(struct enic *enic, uint16_t queue_idx)
 525 {
 526         return vnic_rq_disable(&enic->rq[queue_idx]);
 527 }
 528
 529 int enic_alloc_rq(struct enic *enic, uint16_t queue_idx,
 530         unsigned int socket_id, struct rte_mempool *mp,
 531         uint16_t nb_desc)
 532 {
 533         int rc;
 534         struct vnic_rq *rq = &enic->rq[queue_idx];
 535
 536         rq->socket_id = socket_id;
 537         rq->mp = mp;
 538
 539         if (nb_desc) {
 540                 if (nb_desc > enic->config.rq_desc_count) {
 541                         dev_warning(enic,
 542                                 "RQ %d - number of rx desc in cmd line (%d)"\
 543                                 "is greater than that in the UCSM/CIMC adapter"\
 544                                 "policy.  Applying the value in the adapter "\
 545                                 "policy (%d).\n",
 546                                 queue_idx, nb_desc, enic->config.rq_desc_count);
 547                         nb_desc = enic->config.rq_desc_count;
 548                 }
 549                 dev_info(enic, "RX Queues - effective number of descs:%d\n",
 550                          nb_desc);
 551         }
 552
 553         /* Allocate queue resources */
 554         rc = vnic_rq_alloc(enic->vdev, rq, queue_idx,
 555                 nb_desc, sizeof(struct rq_enet_desc));
 556         if (rc) {
 557                 dev_err(enic, "error in allocation of rq\n");
 558                 goto err_exit;
 559         }
 560
 561         rc = vnic_cq_alloc(enic->vdev, &enic->cq[queue_idx], queue_idx,
 562                 socket_id, nb_desc,
 563                 sizeof(struct cq_enet_rq_desc));
 564         if (rc) {
 565                 dev_err(enic, "error in allocation of cq for rq\n");
 566                 goto err_free_rq_exit;
 567         }
 568
 569         /* Allocate the mbuf ring */
 570         rq->mbuf_ring = (struct rte_mbuf **)rte_zmalloc_socket("rq->mbuf_ring",
 571                         sizeof(struct rte_mbuf *) * nb_desc,
 572                         RTE_CACHE_LINE_SIZE, rq->socket_id);
 573
 574         if (rq->mbuf_ring != NULL)
 575                 return 0;
 576
 577         /* cleanup on error */
 578         vnic_cq_free(&enic->cq[queue_idx]);
 579 err_free_rq_exit:
 580         vnic_rq_free(rq);
 581 err_exit:
 582         return -ENOMEM;
 583 }
 584
 585 void enic_free_wq(void *txq)
 586 {
 587         struct vnic_wq *wq = (struct vnic_wq *)txq;
 588         struct enic *enic = vnic_dev_priv(wq->vdev);
 589
 590         vnic_wq_free(wq);
 591         vnic_cq_free(&enic->cq[enic->rq_count + wq->index]);
 592 }
 593
 594 int enic_alloc_wq(struct enic *enic, uint16_t queue_idx,
 595         unsigned int socket_id, uint16_t nb_desc)
 596 {
 597         int err;
 598         struct vnic_wq *wq = &enic->wq[queue_idx];
 599         unsigned int cq_index = enic_cq_wq(enic, queue_idx);
 600
 601         wq->socket_id = socket_id;
 602         if (nb_desc) {
 603                 if (nb_desc > enic->config.wq_desc_count) {
 604                         dev_warning(enic,
 605                                 "WQ %d - number of tx desc in cmd line (%d)"\
 606                                 "is greater than that in the UCSM/CIMC adapter"\
 607                                 "policy.  Applying the value in the adapter "\
 608                                 "policy (%d)\n",
 609                                 queue_idx, nb_desc, enic->config.wq_desc_count);
 610                 } else if (nb_desc != enic->config.wq_desc_count) {
 611                         enic->config.wq_desc_count = nb_desc;
 612                         dev_info(enic,
 613                                 "TX Queues - effective number of descs:%d\n",
 614                                 nb_desc);
 615                 }
 616         }
 617
 618         /* Allocate queue resources */
 619         err = vnic_wq_alloc(enic->vdev, &enic->wq[queue_idx], queue_idx,
 620                 enic->config.wq_desc_count,
 621                 sizeof(struct wq_enet_desc));
 622         if (err) {
 623                 dev_err(enic, "error in allocation of wq\n");
 624                 return err;
 625         }
 626
 627         err = vnic_cq_alloc(enic->vdev, &enic->cq[cq_index], cq_index,
 628                 socket_id, enic->config.wq_desc_count,
 629                 sizeof(struct cq_enet_wq_desc));
 630         if (err) {
 631                 vnic_wq_free(wq);
 632                 dev_err(enic, "error in allocation of cq for wq\n");
 633         }
 634
 635         return err;
 636 }
 637
 638 int enic_disable(struct enic *enic)
 639 {
 640         unsigned int i;
 641         int err;
 642
 643         vnic_intr_mask(&enic->intr);
 644         (void)vnic_intr_masked(&enic->intr); /* flush write */
 645
 646         vnic_dev_disable(enic->vdev);
 647
 648         enic_clsf_destroy(enic);
 649
 650         if (!enic_is_sriov_vf(enic))
 651                 vnic_dev_del_addr(enic->vdev, enic->mac_addr);
 652
 653         for (i = 0; i < enic->wq_count; i++) {
 654                 err = vnic_wq_disable(&enic->wq[i]);
 655                 if (err)
 656                         return err;
 657         }
 658         for (i = 0; i < enic->rq_count; i++) {
 659                 err = vnic_rq_disable(&enic->rq[i]);
 660                 if (err)
 661                         return err;
 662         }
 663
 664         vnic_dev_set_reset_flag(enic->vdev, 1);
 665         vnic_dev_notify_unset(enic->vdev);
 666
 667         for (i = 0; i < enic->wq_count; i++)
 668                 vnic_wq_clean(&enic->wq[i], enic_free_wq_buf);
 669
 670         for (i = 0; i < enic->rq_count; i++)
 671                 vnic_rq_clean(&enic->rq[i], enic_free_rq_buf);
 672         for (i = 0; i < enic->cq_count; i++)
 673                 vnic_cq_clean(&enic->cq[i]);
 674         vnic_intr_clean(&enic->intr);
 675
 676         return 0;
 677 }
 678
 679 static int enic_dev_wait(struct vnic_dev *vdev,
 680         int (*start)(struct vnic_dev *, int),
 681         int (*finished)(struct vnic_dev *, int *),
 682         int arg)
 683 {
 684         int done;
 685         int err;
 686         int i;
 687
 688         err = start(vdev, arg);
 689         if (err)
 690                 return err;
 691
 692         /* Wait for func to complete...2 seconds max */
 693         for (i = 0; i < 2000; i++) {
 694                 err = finished(vdev, &done);
 695                 if (err)
 696                         return err;
 697                 if (done)
 698                         return 0;
 699                 usleep(1000);
 700         }
 701         return -ETIMEDOUT;
 702 }
 703
 704 static int enic_dev_open(struct enic *enic)
 705 {
 706         int err;
 707
 708         err = enic_dev_wait(enic->vdev, vnic_dev_open,
 709                 vnic_dev_open_done, 0);
 710         if (err)
 711                 dev_err(enic_get_dev(enic),
 712                         "vNIC device open failed, err %d\n", err);
 713
 714         return err;
 715 }
 716
 717 static int enic_set_rsskey(struct enic *enic)
 718 {
 719         dma_addr_t rss_key_buf_pa;
 720         union vnic_rss_key *rss_key_buf_va = NULL;
 721         static union vnic_rss_key rss_key = {
 722                 .key = {
 723                         [0] = {.b = {85, 67, 83, 97, 119, 101, 115, 111, 109, 101}},
 724                         [1] = {.b = {80, 65, 76, 79, 117, 110, 105, 113, 117, 101}},
 725                         [2] = {.b = {76, 73, 78, 85, 88, 114, 111, 99, 107, 115}},
 726                         [3] = {.b = {69, 78, 73, 67, 105, 115, 99, 111, 111, 108}},
 727                 }
 728         };
 729         int err;
 730         u8 name[NAME_MAX];
 731
 732         snprintf((char *)name, NAME_MAX, "rss_key-%s", enic->bdf_name);
 733         rss_key_buf_va = enic_alloc_consistent(enic, sizeof(union vnic_rss_key),
 734                 &rss_key_buf_pa, name);
 735         if (!rss_key_buf_va)
 736                 return -ENOMEM;
 737
 738         rte_memcpy(rss_key_buf_va, &rss_key, sizeof(union vnic_rss_key));
 739
 740         err = enic_set_rss_key(enic,
 741                 rss_key_buf_pa,
 742                 sizeof(union vnic_rss_key));
 743
 744         enic_free_consistent(enic->pdev, sizeof(union vnic_rss_key),
 745                 rss_key_buf_va, rss_key_buf_pa);
 746
 747         return err;
 748 }
 749
 750 static int enic_set_rsscpu(struct enic *enic, u8 rss_hash_bits)
 751 {
 752         dma_addr_t rss_cpu_buf_pa;
 753         union vnic_rss_cpu *rss_cpu_buf_va = NULL;
 754         int i;
 755         int err;
 756         u8 name[NAME_MAX];
 757
 758         snprintf((char *)name, NAME_MAX, "rss_cpu-%s", enic->bdf_name);
 759         rss_cpu_buf_va = enic_alloc_consistent(enic, sizeof(union vnic_rss_cpu),
 760                 &rss_cpu_buf_pa, name);
 761         if (!rss_cpu_buf_va)
 762                 return -ENOMEM;
 763
 764         for (i = 0; i < (1 << rss_hash_bits); i++)
 765                 (*rss_cpu_buf_va).cpu[i/4].b[i%4] = i % enic->rq_count;
 766
 767         err = enic_set_rss_cpu(enic,
 768                 rss_cpu_buf_pa,
 769                 sizeof(union vnic_rss_cpu));
 770
 771         enic_free_consistent(enic->pdev, sizeof(union vnic_rss_cpu),
 772                 rss_cpu_buf_va, rss_cpu_buf_pa);
 773
 774         return err;
 775 }
 776
 777 static int enic_set_niccfg(struct enic *enic, u8 rss_default_cpu,
 778         u8 rss_hash_type, u8 rss_hash_bits, u8 rss_base_cpu, u8 rss_enable)
 779 {
 780         const u8 tso_ipid_split_en = 0;
 781         int err;
 782
 783         /* Enable VLAN tag stripping */
 784
 785         err = enic_set_nic_cfg(enic,
 786                 rss_default_cpu, rss_hash_type,
 787                 rss_hash_bits, rss_base_cpu,
 788                 rss_enable, tso_ipid_split_en,
 789                 enic->ig_vlan_strip_en);
 790
 791         return err;
 792 }
 793
 794 int enic_set_rss_nic_cfg(struct enic *enic)
 795 {
 796         const u8 rss_default_cpu = 0;
 797         const u8 rss_hash_type = NIC_CFG_RSS_HASH_TYPE_IPV4 |
 798             NIC_CFG_RSS_HASH_TYPE_TCP_IPV4 |
 799             NIC_CFG_RSS_HASH_TYPE_IPV6 |
 800             NIC_CFG_RSS_HASH_TYPE_TCP_IPV6;
 801         const u8 rss_hash_bits = 7;
 802         const u8 rss_base_cpu = 0;
 803         u8 rss_enable = ENIC_SETTING(enic, RSS) && (enic->rq_count > 1);
 804
 805         if (rss_enable) {
 806                 if (!enic_set_rsskey(enic)) {
 807                         if (enic_set_rsscpu(enic, rss_hash_bits)) {
 808                                 rss_enable = 0;
 809                                 dev_warning(enic, "RSS disabled, "\
 810                                         "Failed to set RSS cpu indirection table.");
 811                         }
 812                 } else {
 813                         rss_enable = 0;
 814                         dev_warning(enic,
 815                                 "RSS disabled, Failed to set RSS key.\n");
 816                 }
 817         }
 818
 819         return enic_set_niccfg(enic, rss_default_cpu, rss_hash_type,
 820                 rss_hash_bits, rss_base_cpu, rss_enable);
 821 }
 822
 823 int enic_setup_finish(struct enic *enic)
 824 {
 825         int ret;
 826
 827         enic_init_soft_stats(enic);
 828
 829         ret = enic_set_rss_nic_cfg(enic);
 830         if (ret) {
 831                 dev_err(enic, "Failed to config nic, aborting.\n");
 832                 return -1;
 833         }
 834
 835         vnic_dev_add_addr(enic->vdev, enic->mac_addr);
 836
 837         /* Default conf */
 838         vnic_dev_packet_filter(enic->vdev,
 839                 1 /* directed  */,
 840                 1 /* multicast */,
 841                 1 /* broadcast */,
 842                 0 /* promisc   */,
 843                 1 /* allmulti  */);
 844
 845         enic->promisc = 0;
 846         enic->allmulti = 1;
 847
 848         return 0;
 849 }
 850
 851 void enic_add_packet_filter(struct enic *enic)
 852 {
 853         /* Args -> directed, multicast, broadcast, promisc, allmulti */
 854         vnic_dev_packet_filter(enic->vdev, 1, 1, 1,
 855                 enic->promisc, enic->allmulti);
 856 }
 857
 858 int enic_get_link_status(struct enic *enic)
 859 {
 860         return vnic_dev_link_status(enic->vdev);
 861 }
 862
 863 static void enic_dev_deinit(struct enic *enic)
 864 {
 865         struct rte_eth_dev *eth_dev = enic->rte_dev;
 866
 867         rte_free(eth_dev->data->mac_addrs);
 868 }
 869
 870
 871 int enic_set_vnic_res(struct enic *enic)
 872 {
 873         struct rte_eth_dev *eth_dev = enic->rte_dev;
 874
 875         if ((enic->rq_count < eth_dev->data->nb_rx_queues) ||
 876                 (enic->wq_count < eth_dev->data->nb_tx_queues)) {
 877                 dev_err(dev, "Not enough resources configured, aborting\n");
 878                 return -1;
 879         }
 880
 881         enic->rq_count = eth_dev->data->nb_rx_queues;
 882         enic->wq_count = eth_dev->data->nb_tx_queues;
 883         if (enic->cq_count < (enic->rq_count + enic->wq_count)) {
 884                 dev_err(dev, "Not enough resources configured, aborting\n");
 885                 return -1;
 886         }
 887
 888         enic->cq_count = enic->rq_count + enic->wq_count;
 889         return 0;
 890 }
 891
 892 static int enic_dev_init(struct enic *enic)
 893 {
 894         int err;
 895         struct rte_eth_dev *eth_dev = enic->rte_dev;
 896
 897         vnic_dev_intr_coal_timer_info_default(enic->vdev);
 898
 899         /* Get vNIC configuration
 900         */
 901         err = enic_get_vnic_config(enic);
 902         if (err) {
 903                 dev_err(dev, "Get vNIC configuration failed, aborting\n");
 904                 return err;
 905         }
 906
 907         eth_dev->data->mac_addrs = rte_zmalloc("enic_mac_addr", ETH_ALEN, 0);
 908         if (!eth_dev->data->mac_addrs) {
 909                 dev_err(enic, "mac addr storage alloc failed, aborting.\n");
 910                 return -1;
 911         }
 912         ether_addr_copy((struct ether_addr *) enic->mac_addr,
 913                 &eth_dev->data->mac_addrs[0]);
 914
 915
 916         /* Get available resource counts
 917         */
 918         enic_get_res_counts(enic);
 919
 920         vnic_dev_set_reset_flag(enic->vdev, 0);
 921
 922         return 0;
 923
 924 }
 925
 926 int enic_probe(struct enic *enic)
 927 {
 928         struct rte_pci_device *pdev = enic->pdev;
 929         int err = -1;
 930
 931         dev_debug(enic, " Initializing ENIC PMD version %s\n", DRV_VERSION);
 932
 933         enic->bar0.vaddr = (void *)pdev->mem_resource[0].addr;
 934         enic->bar0.len = pdev->mem_resource[0].len;
 935
 936         /* Register vNIC device */
 937         enic->vdev = vnic_dev_register(NULL, enic, enic->pdev, &enic->bar0, 1);
 938         if (!enic->vdev) {
 939                 dev_err(enic, "vNIC registration failed, aborting\n");
 940                 goto err_out;
 941         }
 942
 943         vnic_register_cbacks(enic->vdev,
 944                 enic_alloc_consistent,
 945                 enic_free_consistent);
 946
 947         /* Issue device open to get device in known state */
 948         err = enic_dev_open(enic);
 949         if (err) {
 950                 dev_err(enic, "vNIC dev open failed, aborting\n");
 951                 goto err_out_unregister;
 952         }
 953
 954         /* Set ingress vlan rewrite mode before vnic initialization */
 955         err = vnic_dev_set_ig_vlan_rewrite_mode(enic->vdev,
 956                 IG_VLAN_REWRITE_MODE_PASS_THRU);
 957         if (err) {
 958                 dev_err(enic,
 959                         "Failed to set ingress vlan rewrite mode, aborting.\n");
 960                 goto err_out_dev_close;
 961         }
 962
 963         /* Issue device init to initialize the vnic-to-switch link.
 964          * We'll start with carrier off and wait for link UP
 965          * notification later to turn on carrier.  We don't need
 966          * to wait here for the vnic-to-switch link initialization
 967          * to complete; link UP notification is the indication that
 968          * the process is complete.
 969          */
 970
 971         err = vnic_dev_init(enic->vdev, 0);
 972         if (err) {
 973                 dev_err(enic, "vNIC dev init failed, aborting\n");
 974                 goto err_out_dev_close;
 975         }
 976
 977         err = enic_dev_init(enic);
 978         if (err) {
 979                 dev_err(enic, "Device initialization failed, aborting\n");
 980                 goto err_out_dev_close;
 981         }
 982
 983         return 0;
 984
 985 err_out_dev_close:
 986         vnic_dev_close(enic->vdev);
 987 err_out_unregister:
 988         vnic_dev_unregister(enic->vdev);
 989 err_out:
 990         return err;
 991 }
 992
 993 void enic_remove(struct enic *enic)
 994 {
 995         enic_dev_deinit(enic);
 996         vnic_dev_close(enic->vdev);
 997         vnic_dev_unregister(enic->vdev);
 998 }