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 static void enic_free_wq_buf(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;
 430         struct enic *enic;
 431
 432         if (rxq == NULL)
 433                 return;
 434
 435         rq = (struct vnic_rq *)rxq;
 436         enic = vnic_dev_priv(rq->vdev);
 437         enic_rxmbuf_queue_release(enic, rq);
 438         rte_free(rq->mbuf_ring);
 439         rq->mbuf_ring = NULL;
 440         vnic_rq_free(rq);
 441         vnic_cq_free(&enic->cq[rq->index]);
 442 }
 443
 444 void enic_start_wq(struct enic *enic, uint16_t queue_idx)
 445 {
 446         vnic_wq_enable(&enic->wq[queue_idx]);
 447 }
 448
 449 int enic_stop_wq(struct enic *enic, uint16_t queue_idx)
 450 {
 451         return vnic_wq_disable(&enic->wq[queue_idx]);
 452 }
 453
 454 void enic_start_rq(struct enic *enic, uint16_t queue_idx)
 455 {
 456         vnic_rq_enable(&enic->rq[queue_idx]);
 457 }
 458
 459 int enic_stop_rq(struct enic *enic, uint16_t queue_idx)
 460 {
 461         return vnic_rq_disable(&enic->rq[queue_idx]);
 462 }
 463
 464 int enic_alloc_rq(struct enic *enic, uint16_t queue_idx,
 465         unsigned int socket_id, struct rte_mempool *mp,
 466         uint16_t nb_desc)
 467 {
 468         int rc;
 469         struct vnic_rq *rq = &enic->rq[queue_idx];
 470
 471         rq->socket_id = socket_id;
 472         rq->mp = mp;
 473
 474         if (nb_desc) {
 475                 if (nb_desc > enic->config.rq_desc_count) {
 476                         dev_warning(enic,
 477                                 "RQ %d - number of rx desc in cmd line (%d)"\
 478                                 "is greater than that in the UCSM/CIMC adapter"\
 479                                 "policy.  Applying the value in the adapter "\
 480                                 "policy (%d).\n",
 481                                 queue_idx, nb_desc, enic->config.rq_desc_count);
 482                         nb_desc = enic->config.rq_desc_count;
 483                 }
 484                 dev_info(enic, "RX Queues - effective number of descs:%d\n",
 485                          nb_desc);
 486         }
 487
 488         /* Allocate queue resources */
 489         rc = vnic_rq_alloc(enic->vdev, rq, queue_idx,
 490                 nb_desc, sizeof(struct rq_enet_desc));
 491         if (rc) {
 492                 dev_err(enic, "error in allocation of rq\n");
 493                 goto err_exit;
 494         }
 495
 496         rc = vnic_cq_alloc(enic->vdev, &enic->cq[queue_idx], queue_idx,
 497                 socket_id, nb_desc,
 498                 sizeof(struct cq_enet_rq_desc));
 499         if (rc) {
 500                 dev_err(enic, "error in allocation of cq for rq\n");
 501                 goto err_free_rq_exit;
 502         }
 503
 504         /* Allocate the mbuf ring */
 505         rq->mbuf_ring = (struct rte_mbuf **)rte_zmalloc_socket("rq->mbuf_ring",
 506                         sizeof(struct rte_mbuf *) * nb_desc,
 507                         RTE_CACHE_LINE_SIZE, rq->socket_id);
 508
 509         if (rq->mbuf_ring != NULL)
 510                 return 0;
 511
 512         /* cleanup on error */
 513         vnic_cq_free(&enic->cq[queue_idx]);
 514 err_free_rq_exit:
 515         vnic_rq_free(rq);
 516 err_exit:
 517         return -ENOMEM;
 518 }
 519
 520 void enic_free_wq(void *txq)
 521 {
 522         struct vnic_wq *wq;
 523         struct enic *enic;
 524
 525         if (txq == NULL)
 526                 return;
 527
 528         wq = (struct vnic_wq *)txq;
 529         enic = vnic_dev_priv(wq->vdev);
 530         rte_memzone_free(wq->cqmsg_rz);
 531         vnic_wq_free(wq);
 532         vnic_cq_free(&enic->cq[enic->rq_count + wq->index]);
 533 }
 534
 535 int enic_alloc_wq(struct enic *enic, uint16_t queue_idx,
 536         unsigned int socket_id, uint16_t nb_desc)
 537 {
 538         int err;
 539         struct vnic_wq *wq = &enic->wq[queue_idx];
 540         unsigned int cq_index = enic_cq_wq(enic, queue_idx);
 541         char name[NAME_MAX];
 542         static int instance;
 543
 544         wq->socket_id = socket_id;
 545         if (nb_desc) {
 546                 if (nb_desc > enic->config.wq_desc_count) {
 547                         dev_warning(enic,
 548                                 "WQ %d - number of tx desc in cmd line (%d)"\
 549                                 "is greater than that in the UCSM/CIMC adapter"\
 550                                 "policy.  Applying the value in the adapter "\
 551                                 "policy (%d)\n",
 552                                 queue_idx, nb_desc, enic->config.wq_desc_count);
 553                 } else if (nb_desc != enic->config.wq_desc_count) {
 554                         enic->config.wq_desc_count = nb_desc;
 555                         dev_info(enic,
 556                                 "TX Queues - effective number of descs:%d\n",
 557                                 nb_desc);
 558                 }
 559         }
 560
 561         /* Allocate queue resources */
 562         err = vnic_wq_alloc(enic->vdev, &enic->wq[queue_idx], queue_idx,
 563                 enic->config.wq_desc_count,
 564                 sizeof(struct wq_enet_desc));
 565         if (err) {
 566                 dev_err(enic, "error in allocation of wq\n");
 567                 return err;
 568         }
 569
 570         err = vnic_cq_alloc(enic->vdev, &enic->cq[cq_index], cq_index,
 571                 socket_id, enic->config.wq_desc_count,
 572                 sizeof(struct cq_enet_wq_desc));
 573         if (err) {
 574                 vnic_wq_free(wq);
 575                 dev_err(enic, "error in allocation of cq for wq\n");
 576         }
 577
 578         /* setup up CQ message */
 579         snprintf((char *)name, sizeof(name),
 580                  "vnic_cqmsg-%s-%d-%d", enic->bdf_name, queue_idx,
 581                 instance++);
 582
 583         wq->cqmsg_rz = rte_memzone_reserve_aligned((const char *)name,
 584                                                    sizeof(uint32_t),
 585                                                    SOCKET_ID_ANY, 0,
 586                                                    ENIC_ALIGN);
 587         if (!wq->cqmsg_rz)
 588                 return -ENOMEM;
 589
 590         return err;
 591 }
 592
 593 int enic_disable(struct enic *enic)
 594 {
 595         unsigned int i;
 596         int err;
 597
 598         vnic_intr_mask(&enic->intr);
 599         (void)vnic_intr_masked(&enic->intr); /* flush write */
 600
 601         vnic_dev_disable(enic->vdev);
 602
 603         enic_clsf_destroy(enic);
 604
 605         if (!enic_is_sriov_vf(enic))
 606                 vnic_dev_del_addr(enic->vdev, enic->mac_addr);
 607
 608         for (i = 0; i < enic->wq_count; i++) {
 609                 err = vnic_wq_disable(&enic->wq[i]);
 610                 if (err)
 611                         return err;
 612         }
 613         for (i = 0; i < enic->rq_count; i++) {
 614                 err = vnic_rq_disable(&enic->rq[i]);
 615                 if (err)
 616                         return err;
 617         }
 618
 619         vnic_dev_set_reset_flag(enic->vdev, 1);
 620         vnic_dev_notify_unset(enic->vdev);
 621
 622         for (i = 0; i < enic->wq_count; i++)
 623                 vnic_wq_clean(&enic->wq[i], enic_free_wq_buf);
 624
 625         for (i = 0; i < enic->rq_count; i++)
 626                 vnic_rq_clean(&enic->rq[i], enic_free_rq_buf);
 627         for (i = 0; i < enic->cq_count; i++)
 628                 vnic_cq_clean(&enic->cq[i]);
 629         vnic_intr_clean(&enic->intr);
 630
 631         return 0;
 632 }
 633
 634 static int enic_dev_wait(struct vnic_dev *vdev,
 635         int (*start)(struct vnic_dev *, int),
 636         int (*finished)(struct vnic_dev *, int *),
 637         int arg)
 638 {
 639         int done;
 640         int err;
 641         int i;
 642
 643         err = start(vdev, arg);
 644         if (err)
 645                 return err;
 646
 647         /* Wait for func to complete...2 seconds max */
 648         for (i = 0; i < 2000; i++) {
 649                 err = finished(vdev, &done);
 650                 if (err)
 651                         return err;
 652                 if (done)
 653                         return 0;
 654                 usleep(1000);
 655         }
 656         return -ETIMEDOUT;
 657 }
 658
 659 static int enic_dev_open(struct enic *enic)
 660 {
 661         int err;
 662
 663         err = enic_dev_wait(enic->vdev, vnic_dev_open,
 664                 vnic_dev_open_done, 0);
 665         if (err)
 666                 dev_err(enic_get_dev(enic),
 667                         "vNIC device open failed, err %d\n", err);
 668
 669         return err;
 670 }
 671
 672 static int enic_set_rsskey(struct enic *enic)
 673 {
 674         dma_addr_t rss_key_buf_pa;
 675         union vnic_rss_key *rss_key_buf_va = NULL;
 676         static union vnic_rss_key rss_key = {
 677                 .key = {
 678                         [0] = {.b = {85, 67, 83, 97, 119, 101, 115, 111, 109, 101}},
 679                         [1] = {.b = {80, 65, 76, 79, 117, 110, 105, 113, 117, 101}},
 680                         [2] = {.b = {76, 73, 78, 85, 88, 114, 111, 99, 107, 115}},
 681                         [3] = {.b = {69, 78, 73, 67, 105, 115, 99, 111, 111, 108}},
 682                 }
 683         };
 684         int err;
 685         u8 name[NAME_MAX];
 686
 687         snprintf((char *)name, NAME_MAX, "rss_key-%s", enic->bdf_name);
 688         rss_key_buf_va = enic_alloc_consistent(enic, sizeof(union vnic_rss_key),
 689                 &rss_key_buf_pa, name);
 690         if (!rss_key_buf_va)
 691                 return -ENOMEM;
 692
 693         rte_memcpy(rss_key_buf_va, &rss_key, sizeof(union vnic_rss_key));
 694
 695         err = enic_set_rss_key(enic,
 696                 rss_key_buf_pa,
 697                 sizeof(union vnic_rss_key));
 698
 699         enic_free_consistent(enic->pdev, sizeof(union vnic_rss_key),
 700                 rss_key_buf_va, rss_key_buf_pa);
 701
 702         return err;
 703 }
 704
 705 static int enic_set_rsscpu(struct enic *enic, u8 rss_hash_bits)
 706 {
 707         dma_addr_t rss_cpu_buf_pa;
 708         union vnic_rss_cpu *rss_cpu_buf_va = NULL;
 709         int i;
 710         int err;
 711         u8 name[NAME_MAX];
 712
 713         snprintf((char *)name, NAME_MAX, "rss_cpu-%s", enic->bdf_name);
 714         rss_cpu_buf_va = enic_alloc_consistent(enic, sizeof(union vnic_rss_cpu),
 715                 &rss_cpu_buf_pa, name);
 716         if (!rss_cpu_buf_va)
 717                 return -ENOMEM;
 718
 719         for (i = 0; i < (1 << rss_hash_bits); i++)
 720                 (*rss_cpu_buf_va).cpu[i/4].b[i%4] = i % enic->rq_count;
 721
 722         err = enic_set_rss_cpu(enic,
 723                 rss_cpu_buf_pa,
 724                 sizeof(union vnic_rss_cpu));
 725
 726         enic_free_consistent(enic->pdev, sizeof(union vnic_rss_cpu),
 727                 rss_cpu_buf_va, rss_cpu_buf_pa);
 728
 729         return err;
 730 }
 731
 732 static int enic_set_niccfg(struct enic *enic, u8 rss_default_cpu,
 733         u8 rss_hash_type, u8 rss_hash_bits, u8 rss_base_cpu, u8 rss_enable)
 734 {
 735         const u8 tso_ipid_split_en = 0;
 736         int err;
 737
 738         /* Enable VLAN tag stripping */
 739
 740         err = enic_set_nic_cfg(enic,
 741                 rss_default_cpu, rss_hash_type,
 742                 rss_hash_bits, rss_base_cpu,
 743                 rss_enable, tso_ipid_split_en,
 744                 enic->ig_vlan_strip_en);
 745
 746         return err;
 747 }
 748
 749 int enic_set_rss_nic_cfg(struct enic *enic)
 750 {
 751         const u8 rss_default_cpu = 0;
 752         const u8 rss_hash_type = NIC_CFG_RSS_HASH_TYPE_IPV4 |
 753             NIC_CFG_RSS_HASH_TYPE_TCP_IPV4 |
 754             NIC_CFG_RSS_HASH_TYPE_IPV6 |
 755             NIC_CFG_RSS_HASH_TYPE_TCP_IPV6;
 756         const u8 rss_hash_bits = 7;
 757         const u8 rss_base_cpu = 0;
 758         u8 rss_enable = ENIC_SETTING(enic, RSS) && (enic->rq_count > 1);
 759
 760         if (rss_enable) {
 761                 if (!enic_set_rsskey(enic)) {
 762                         if (enic_set_rsscpu(enic, rss_hash_bits)) {
 763                                 rss_enable = 0;
 764                                 dev_warning(enic, "RSS disabled, "\
 765                                         "Failed to set RSS cpu indirection table.");
 766                         }
 767                 } else {
 768                         rss_enable = 0;
 769                         dev_warning(enic,
 770                                 "RSS disabled, Failed to set RSS key.\n");
 771                 }
 772         }
 773
 774         return enic_set_niccfg(enic, rss_default_cpu, rss_hash_type,
 775                 rss_hash_bits, rss_base_cpu, rss_enable);
 776 }
 777
 778 int enic_setup_finish(struct enic *enic)
 779 {
 780         int ret;
 781
 782         enic_init_soft_stats(enic);
 783
 784         ret = enic_set_rss_nic_cfg(enic);
 785         if (ret) {
 786                 dev_err(enic, "Failed to config nic, aborting.\n");
 787                 return -1;
 788         }
 789
 790         vnic_dev_add_addr(enic->vdev, enic->mac_addr);
 791
 792         /* Default conf */
 793         vnic_dev_packet_filter(enic->vdev,
 794                 1 /* directed  */,
 795                 1 /* multicast */,
 796                 1 /* broadcast */,
 797                 0 /* promisc   */,
 798                 1 /* allmulti  */);
 799
 800         enic->promisc = 0;
 801         enic->allmulti = 1;
 802
 803         return 0;
 804 }
 805
 806 void enic_add_packet_filter(struct enic *enic)
 807 {
 808         /* Args -> directed, multicast, broadcast, promisc, allmulti */
 809         vnic_dev_packet_filter(enic->vdev, 1, 1, 1,
 810                 enic->promisc, enic->allmulti);
 811 }
 812
 813 int enic_get_link_status(struct enic *enic)
 814 {
 815         return vnic_dev_link_status(enic->vdev);
 816 }
 817
 818 static void enic_dev_deinit(struct enic *enic)
 819 {
 820         struct rte_eth_dev *eth_dev = enic->rte_dev;
 821
 822         rte_free(eth_dev->data->mac_addrs);
 823 }
 824
 825
 826 int enic_set_vnic_res(struct enic *enic)
 827 {
 828         struct rte_eth_dev *eth_dev = enic->rte_dev;
 829         int rc = 0;
 830
 831         if (enic->rq_count < eth_dev->data->nb_rx_queues) {
 832                 dev_err(dev, "Not enough Receive queues. Requested:%u, Configured:%u\n",
 833                         eth_dev->data->nb_rx_queues, enic->rq_count);
 834                 rc = -EINVAL;
 835         }
 836         if (enic->wq_count < eth_dev->data->nb_tx_queues) {
 837                 dev_err(dev, "Not enough Transmit queues. Requested:%u, Configured:%u\n",
 838                         eth_dev->data->nb_tx_queues, enic->wq_count);
 839                 rc = -EINVAL;
 840         }
 841
 842         if (enic->cq_count < (enic->rq_count + enic->wq_count)) {
 843                 dev_err(dev, "Not enough Completion queues. Required:%u, Configured:%u\n",
 844                         enic->rq_count + enic->wq_count, enic->cq_count);
 845                 rc = -EINVAL;
 846         }
 847
 848         if (rc == 0) {
 849                 enic->rq_count = eth_dev->data->nb_rx_queues;
 850                 enic->wq_count = eth_dev->data->nb_tx_queues;
 851                 enic->cq_count = enic->rq_count + enic->wq_count;
 852         }
 853
 854         return rc;
 855 }
 856
 857 static int enic_dev_init(struct enic *enic)
 858 {
 859         int err;
 860         struct rte_eth_dev *eth_dev = enic->rte_dev;
 861
 862         vnic_dev_intr_coal_timer_info_default(enic->vdev);
 863
 864         /* Get vNIC configuration
 865         */
 866         err = enic_get_vnic_config(enic);
 867         if (err) {
 868                 dev_err(dev, "Get vNIC configuration failed, aborting\n");
 869                 return err;
 870         }
 871
 872         eth_dev->data->mac_addrs = rte_zmalloc("enic_mac_addr", ETH_ALEN, 0);
 873         if (!eth_dev->data->mac_addrs) {
 874                 dev_err(enic, "mac addr storage alloc failed, aborting.\n");
 875                 return -1;
 876         }
 877         ether_addr_copy((struct ether_addr *) enic->mac_addr,
 878                 &eth_dev->data->mac_addrs[0]);
 879
 880
 881         /* Get available resource counts
 882         */
 883         enic_get_res_counts(enic);
 884
 885         vnic_dev_set_reset_flag(enic->vdev, 0);
 886
 887         return 0;
 888
 889 }
 890
 891 int enic_probe(struct enic *enic)
 892 {
 893         struct rte_pci_device *pdev = enic->pdev;
 894         int err = -1;
 895
 896         dev_debug(enic, " Initializing ENIC PMD version %s\n", DRV_VERSION);
 897
 898         enic->bar0.vaddr = (void *)pdev->mem_resource[0].addr;
 899         enic->bar0.len = pdev->mem_resource[0].len;
 900
 901         /* Register vNIC device */
 902         enic->vdev = vnic_dev_register(NULL, enic, enic->pdev, &enic->bar0, 1);
 903         if (!enic->vdev) {
 904                 dev_err(enic, "vNIC registration failed, aborting\n");
 905                 goto err_out;
 906         }
 907
 908         vnic_register_cbacks(enic->vdev,
 909                 enic_alloc_consistent,
 910                 enic_free_consistent);
 911
 912         /* Issue device open to get device in known state */
 913         err = enic_dev_open(enic);
 914         if (err) {
 915                 dev_err(enic, "vNIC dev open failed, aborting\n");
 916                 goto err_out_unregister;
 917         }
 918
 919         /* Set ingress vlan rewrite mode before vnic initialization */
 920         err = vnic_dev_set_ig_vlan_rewrite_mode(enic->vdev,
 921                 IG_VLAN_REWRITE_MODE_PASS_THRU);
 922         if (err) {
 923                 dev_err(enic,
 924                         "Failed to set ingress vlan rewrite mode, aborting.\n");
 925                 goto err_out_dev_close;
 926         }
 927
 928         /* Issue device init to initialize the vnic-to-switch link.
 929          * We'll start with carrier off and wait for link UP
 930          * notification later to turn on carrier.  We don't need
 931          * to wait here for the vnic-to-switch link initialization
 932          * to complete; link UP notification is the indication that
 933          * the process is complete.
 934          */
 935
 936         err = vnic_dev_init(enic->vdev, 0);
 937         if (err) {
 938                 dev_err(enic, "vNIC dev init failed, aborting\n");
 939                 goto err_out_dev_close;
 940         }
 941
 942         err = enic_dev_init(enic);
 943         if (err) {
 944                 dev_err(enic, "Device initialization failed, aborting\n");
 945                 goto err_out_dev_close;
 946         }
 947
 948         return 0;
 949
 950 err_out_dev_close:
 951         vnic_dev_close(enic->vdev);
 952 err_out_unregister:
 953         vnic_dev_unregister(enic->vdev);
 954 err_out:
 955         return err;
 956 }
 957
 958 void enic_remove(struct enic *enic)
 959 {
 960         enic_dev_deinit(enic);
 961         vnic_dev_close(enic->vdev);
 962         vnic_dev_unregister(enic->vdev);
 963 }