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 struct rte_mbuf *
  64 rte_rxmbuf_alloc(struct rte_mempool *mp)
  65 {
  66         struct rte_mbuf *m;
  67
  68         m = __rte_mbuf_raw_alloc(mp);
  69         __rte_mbuf_sanity_check_raw(m, 0);
  70         return m;
  71 }
  72
  73
  74 static inline int enic_is_sriov_vf(struct enic *enic)
  75 {
  76         return enic->pdev->id.device_id == PCI_DEVICE_ID_CISCO_VIC_ENET_VF;
  77 }
  78
  79 static int is_zero_addr(uint8_t *addr)
  80 {
  81         return !(addr[0] |  addr[1] | addr[2] | addr[3] | addr[4] | addr[5]);
  82 }
  83
  84 static int is_mcast_addr(uint8_t *addr)
  85 {
  86         return addr[0] & 1;
  87 }
  88
  89 static int is_eth_addr_valid(uint8_t *addr)
  90 {
  91         return !is_mcast_addr(addr) && !is_zero_addr(addr);
  92 }
  93
  94 static void
  95 enic_rxmbuf_queue_release(struct enic *enic, struct vnic_rq *rq)
  96 {
  97         uint16_t i;
  98
  99         if (!rq || !rq->mbuf_ring) {
 100                 dev_debug(enic, "Pointer to rq or mbuf_ring is NULL");
 101                 return;
 102         }
 103
 104         for (i = 0; i < enic->config.rq_desc_count; i++) {
 105                 if (rq->mbuf_ring[i]) {
 106                         rte_pktmbuf_free_seg(rq->mbuf_ring[i]);
 107                         rq->mbuf_ring[i] = NULL;
 108                 }
 109         }
 110 }
 111
 112
 113 void enic_set_hdr_split_size(struct enic *enic, u16 split_hdr_size)
 114 {
 115         vnic_set_hdr_split_size(enic->vdev, split_hdr_size);
 116 }
 117
 118 static void enic_free_wq_buf(__rte_unused struct vnic_wq *wq, struct vnic_wq_buf *buf)
 119 {
 120         struct rte_mbuf *mbuf = (struct rte_mbuf *)buf->os_buf;
 121
 122         rte_mempool_put(mbuf->pool, mbuf);
 123         buf->os_buf = NULL;
 124 }
 125
 126 static void enic_wq_free_buf(struct vnic_wq *wq,
 127         __rte_unused struct cq_desc *cq_desc,
 128         struct vnic_wq_buf *buf,
 129         __rte_unused void *opaque)
 130 {
 131         enic_free_wq_buf(wq, buf);
 132 }
 133
 134 static int enic_wq_service(struct vnic_dev *vdev, struct cq_desc *cq_desc,
 135         __rte_unused u8 type, u16 q_number, u16 completed_index, void *opaque)
 136 {
 137         struct enic *enic = vnic_dev_priv(vdev);
 138
 139         vnic_wq_service(&enic->wq[q_number], cq_desc,
 140                 completed_index, enic_wq_free_buf,
 141                 opaque);
 142
 143         return 0;
 144 }
 145
 146 static void enic_log_q_error(struct enic *enic)
 147 {
 148         unsigned int i;
 149         u32 error_status;
 150
 151         for (i = 0; i < enic->wq_count; i++) {
 152                 error_status = vnic_wq_error_status(&enic->wq[i]);
 153                 if (error_status)
 154                         dev_err(enic, "WQ[%d] error_status %d\n", i,
 155                                 error_status);
 156         }
 157
 158         for (i = 0; i < enic->rq_count; i++) {
 159                 error_status = vnic_rq_error_status(&enic->rq[i]);
 160                 if (error_status)
 161                         dev_err(enic, "RQ[%d] error_status %d\n", i,
 162                                 error_status);
 163         }
 164 }
 165
 166 unsigned int enic_cleanup_wq(struct enic *enic, struct vnic_wq *wq)
 167 {
 168         unsigned int cq = enic_cq_wq(enic, wq->index);
 169
 170         /* Return the work done */
 171         return vnic_cq_service(&enic->cq[cq],
 172                 -1 /*wq_work_to_do*/, enic_wq_service, NULL);
 173 }
 174
 175 void enic_post_wq_index(struct vnic_wq *wq)
 176 {
 177         enic_vnic_post_wq_index(wq);
 178 }
 179
 180 void enic_send_pkt(struct enic *enic, struct vnic_wq *wq,
 181                    struct rte_mbuf *tx_pkt, unsigned short len,
 182                    uint8_t sop, uint8_t eop, uint8_t cq_entry,
 183                    uint16_t ol_flags, uint16_t vlan_tag)
 184 {
 185         struct wq_enet_desc *desc = vnic_wq_next_desc(wq);
 186         uint16_t mss = 0;
 187         uint8_t vlan_tag_insert = 0;
 188         uint64_t bus_addr = (dma_addr_t)
 189             (tx_pkt->buf_physaddr + tx_pkt->data_off);
 190
 191         if (sop) {
 192                 if (ol_flags & PKT_TX_VLAN_PKT)
 193                         vlan_tag_insert = 1;
 194
 195                 if (enic->hw_ip_checksum) {
 196                         if (ol_flags & PKT_TX_IP_CKSUM)
 197                                 mss |= ENIC_CALC_IP_CKSUM;
 198
 199                         if (ol_flags & PKT_TX_TCP_UDP_CKSUM)
 200                                 mss |= ENIC_CALC_TCP_UDP_CKSUM;
 201                 }
 202         }
 203
 204         wq_enet_desc_enc(desc,
 205                 bus_addr,
 206                 len,
 207                 mss,
 208                 0 /* header_length */,
 209                 0 /* offload_mode WQ_ENET_OFFLOAD_MODE_CSUM */,
 210                 eop,
 211                 cq_entry,
 212                 0 /* fcoe_encap */,
 213                 vlan_tag_insert,
 214                 vlan_tag,
 215                 0 /* loopback */);
 216
 217         enic_vnic_post_wq(wq, (void *)tx_pkt, bus_addr, len,
 218                           sop,
 219                           1 /*desc_skip_cnt*/,
 220                           cq_entry,
 221                           0 /*compressed send*/,
 222                           0 /*wrid*/);
 223 }
 224
 225 void enic_dev_stats_clear(struct enic *enic)
 226 {
 227         if (vnic_dev_stats_clear(enic->vdev))
 228                 dev_err(enic, "Error in clearing stats\n");
 229 }
 230
 231 void enic_dev_stats_get(struct enic *enic, struct rte_eth_stats *r_stats)
 232 {
 233         struct vnic_stats *stats;
 234
 235         if (vnic_dev_stats_dump(enic->vdev, &stats)) {
 236                 dev_err(enic, "Error in getting stats\n");
 237                 return;
 238         }
 239
 240         r_stats->ipackets = stats->rx.rx_frames_ok;
 241         r_stats->opackets = stats->tx.tx_frames_ok;
 242
 243         r_stats->ibytes = stats->rx.rx_bytes_ok;
 244         r_stats->obytes = stats->tx.tx_bytes_ok;
 245
 246         r_stats->ierrors = stats->rx.rx_errors;
 247         r_stats->oerrors = stats->tx.tx_errors;
 248
 249         r_stats->imissed = stats->rx.rx_drop;
 250
 251         r_stats->imcasts = stats->rx.rx_multicast_frames_ok;
 252         r_stats->rx_nombuf = stats->rx.rx_no_bufs;
 253 }
 254
 255 void enic_del_mac_address(struct enic *enic)
 256 {
 257         if (vnic_dev_del_addr(enic->vdev, enic->mac_addr))
 258                 dev_err(enic, "del mac addr failed\n");
 259 }
 260
 261 void enic_set_mac_address(struct enic *enic, uint8_t *mac_addr)
 262 {
 263         int err;
 264
 265         if (!is_eth_addr_valid(mac_addr)) {
 266                 dev_err(enic, "invalid mac address\n");
 267                 return;
 268         }
 269
 270         err = vnic_dev_del_addr(enic->vdev, mac_addr);
 271         if (err) {
 272                 dev_err(enic, "del mac addr failed\n");
 273                 return;
 274         }
 275
 276         ether_addr_copy((struct ether_addr *)mac_addr,
 277                 (struct ether_addr *)enic->mac_addr);
 278
 279         err = vnic_dev_add_addr(enic->vdev, mac_addr);
 280         if (err) {
 281                 dev_err(enic, "add mac addr failed\n");
 282                 return;
 283         }
 284 }
 285
 286 static void
 287 enic_free_rq_buf(struct rte_mbuf **mbuf)
 288 {
 289         if (*mbuf == NULL)
 290                 return;
 291
 292         rte_pktmbuf_free(*mbuf);
 293         mbuf = NULL;
 294 }
 295
 296 void enic_init_vnic_resources(struct enic *enic)
 297 {
 298         unsigned int error_interrupt_enable = 1;
 299         unsigned int error_interrupt_offset = 0;
 300         unsigned int index = 0;
 301
 302         for (index = 0; index < enic->rq_count; index++) {
 303                 vnic_rq_init(&enic->rq[index],
 304                         enic_cq_rq(enic, index),
 305                         error_interrupt_enable,
 306                         error_interrupt_offset);
 307         }
 308
 309         for (index = 0; index < enic->wq_count; index++) {
 310                 vnic_wq_init(&enic->wq[index],
 311                         enic_cq_wq(enic, index),
 312                         error_interrupt_enable,
 313                         error_interrupt_offset);
 314         }
 315
 316         vnic_dev_stats_clear(enic->vdev);
 317
 318         for (index = 0; index < enic->cq_count; index++) {
 319                 vnic_cq_init(&enic->cq[index],
 320                         0 /* flow_control_enable */,
 321                         1 /* color_enable */,
 322                         0 /* cq_head */,
 323                         0 /* cq_tail */,
 324                         1 /* cq_tail_color */,
 325                         0 /* interrupt_enable */,
 326                         1 /* cq_entry_enable */,
 327                         0 /* cq_message_enable */,
 328                         0 /* interrupt offset */,
 329                         0 /* cq_message_addr */);
 330         }
 331
 332         vnic_intr_init(&enic->intr,
 333                 enic->config.intr_timer_usec,
 334                 enic->config.intr_timer_type,
 335                 /*mask_on_assertion*/1);
 336 }
 337
 338
 339 static int
 340 enic_alloc_rx_queue_mbufs(struct enic *enic, struct vnic_rq *rq)
 341 {
 342         struct rte_mbuf *mb;
 343         struct rq_enet_desc *rqd = rq->ring.descs;
 344         unsigned i;
 345         dma_addr_t dma_addr;
 346
 347         dev_debug(enic, "queue %u, allocating %u rx queue mbufs\n", rq->index,
 348                   rq->ring.desc_count);
 349
 350         for (i = 0; i < rq->ring.desc_count; i++, rqd++) {
 351                 mb = rte_rxmbuf_alloc(rq->mp);
 352                 if (mb == NULL) {
 353                         dev_err(enic, "RX mbuf alloc failed queue_id=%u\n",
 354                         (unsigned)rq->index);
 355                         return -ENOMEM;
 356                 }
 357
 358                 dma_addr = (dma_addr_t)(mb->buf_physaddr + mb->data_off);
 359
 360                 rq_enet_desc_enc(rqd, dma_addr, RQ_ENET_TYPE_ONLY_SOP,
 361                                  mb->buf_len);
 362                 rq->mbuf_ring[i] = mb;
 363         }
 364
 365         /* make sure all prior writes are complete before doing the PIO write */
 366         rte_rmb();
 367
 368         /* Post all but the last 2 cache lines' worth of descriptors */
 369         rq->posted_index = rq->ring.desc_count - (2 * RTE_CACHE_LINE_SIZE
 370                         / sizeof(struct rq_enet_desc));
 371         rq->rx_nb_hold = 0;
 372
 373         dev_debug(enic, "port=%u, qidx=%u, Write %u posted idx, %u sw held\n",
 374                 enic->port_id, rq->index, rq->posted_index, rq->rx_nb_hold);
 375         iowrite32(rq->posted_index, &rq->ctrl->posted_index);
 376         rte_rmb();
 377
 378         return 0;
 379
 380 }
 381
 382 static void *
 383 enic_alloc_consistent(__rte_unused void *priv, size_t size,
 384         dma_addr_t *dma_handle, u8 *name)
 385 {
 386         void *vaddr;
 387         const struct rte_memzone *rz;
 388         *dma_handle = 0;
 389
 390         rz = rte_memzone_reserve_aligned((const char *)name,
 391                                          size, SOCKET_ID_ANY, 0, ENIC_ALIGN);
 392         if (!rz) {
 393                 pr_err("%s : Failed to allocate memory requested for %s\n",
 394                         __func__, name);
 395                 return NULL;
 396         }
 397
 398         vaddr = rz->addr;
 399         *dma_handle = (dma_addr_t)rz->phys_addr;
 400
 401         return vaddr;
 402 }
 403
 404 static void
 405 enic_free_consistent(__rte_unused struct rte_pci_device *hwdev,
 406         __rte_unused size_t size,
 407         __rte_unused void *vaddr,
 408         __rte_unused dma_addr_t dma_handle)
 409 {
 410         /* Nothing to be done */
 411 }
 412
 413 static void
 414 enic_intr_handler(__rte_unused struct rte_intr_handle *handle,
 415         void *arg)
 416 {
 417         struct enic *enic = pmd_priv((struct rte_eth_dev *)arg);
 418
 419         vnic_intr_return_all_credits(&enic->intr);
 420
 421         enic_log_q_error(enic);
 422 }
 423
 424 int enic_enable(struct enic *enic)
 425 {
 426         unsigned int index;
 427         int err;
 428         struct rte_eth_dev *eth_dev = enic->rte_dev;
 429
 430         eth_dev->data->dev_link.link_speed = vnic_dev_port_speed(enic->vdev);
 431         eth_dev->data->dev_link.link_duplex = ETH_LINK_FULL_DUPLEX;
 432         vnic_dev_notify_set(enic->vdev, -1); /* No Intr for notify */
 433
 434         if (enic_clsf_init(enic))
 435                 dev_warning(enic, "Init of hash table for clsf failed."\
 436                         "Flow director feature will not work\n");
 437
 438         for (index = 0; index < enic->rq_count; index++) {
 439                 err = enic_alloc_rx_queue_mbufs(enic, &enic->rq[index]);
 440                 if (err) {
 441                         dev_err(enic, "Failed to alloc RX queue mbufs\n");
 442                         return err;
 443                 }
 444         }
 445
 446         for (index = 0; index < enic->wq_count; index++)
 447                 vnic_wq_enable(&enic->wq[index]);
 448         for (index = 0; index < enic->rq_count; index++)
 449                 vnic_rq_enable(&enic->rq[index]);
 450
 451         vnic_dev_enable_wait(enic->vdev);
 452
 453         /* Register and enable error interrupt */
 454         rte_intr_callback_register(&(enic->pdev->intr_handle),
 455                 enic_intr_handler, (void *)enic->rte_dev);
 456
 457         rte_intr_enable(&(enic->pdev->intr_handle));
 458         vnic_intr_unmask(&enic->intr);
 459
 460         return 0;
 461 }
 462
 463 int enic_alloc_intr_resources(struct enic *enic)
 464 {
 465         int err;
 466
 467         dev_info(enic, "vNIC resources used:  "\
 468                 "wq %d rq %d cq %d intr %d\n",
 469                 enic->wq_count, enic->rq_count,
 470                 enic->cq_count, enic->intr_count);
 471
 472         err = vnic_intr_alloc(enic->vdev, &enic->intr, 0);
 473         if (err)
 474                 enic_free_vnic_resources(enic);
 475
 476         return err;
 477 }
 478
 479 void enic_free_rq(void *rxq)
 480 {
 481         struct vnic_rq *rq = (struct vnic_rq *)rxq;
 482         struct enic *enic = vnic_dev_priv(rq->vdev);
 483
 484         enic_rxmbuf_queue_release(enic, rq);
 485         rte_free(rq->mbuf_ring);
 486         rq->mbuf_ring = NULL;
 487         vnic_rq_free(rq);
 488         vnic_cq_free(&enic->cq[rq->index]);
 489 }
 490
 491 void enic_start_wq(struct enic *enic, uint16_t queue_idx)
 492 {
 493         vnic_wq_enable(&enic->wq[queue_idx]);
 494 }
 495
 496 int enic_stop_wq(struct enic *enic, uint16_t queue_idx)
 497 {
 498         return vnic_wq_disable(&enic->wq[queue_idx]);
 499 }
 500
 501 void enic_start_rq(struct enic *enic, uint16_t queue_idx)
 502 {
 503         vnic_rq_enable(&enic->rq[queue_idx]);
 504 }
 505
 506 int enic_stop_rq(struct enic *enic, uint16_t queue_idx)
 507 {
 508         return vnic_rq_disable(&enic->rq[queue_idx]);
 509 }
 510
 511 int enic_alloc_rq(struct enic *enic, uint16_t queue_idx,
 512         unsigned int socket_id, struct rte_mempool *mp,
 513         uint16_t nb_desc)
 514 {
 515         int rc;
 516         struct vnic_rq *rq = &enic->rq[queue_idx];
 517
 518         rq->socket_id = socket_id;
 519         rq->mp = mp;
 520
 521         if (nb_desc) {
 522                 if (nb_desc > enic->config.rq_desc_count) {
 523                         dev_warning(enic,
 524                                 "RQ %d - number of rx desc in cmd line (%d)"\
 525                                 "is greater than that in the UCSM/CIMC adapter"\
 526                                 "policy.  Applying the value in the adapter "\
 527                                 "policy (%d).\n",
 528                                 queue_idx, nb_desc, enic->config.rq_desc_count);
 529                         nb_desc = enic->config.rq_desc_count;
 530                 }
 531                 dev_info(enic, "RX Queues - effective number of descs:%d\n",
 532                          nb_desc);
 533         }
 534
 535         /* Allocate queue resources */
 536         rc = vnic_rq_alloc(enic->vdev, rq, queue_idx,
 537                 nb_desc, sizeof(struct rq_enet_desc));
 538         if (rc) {
 539                 dev_err(enic, "error in allocation of rq\n");
 540                 goto err_exit;
 541         }
 542
 543         rc = vnic_cq_alloc(enic->vdev, &enic->cq[queue_idx], queue_idx,
 544                 socket_id, nb_desc,
 545                 sizeof(struct cq_enet_rq_desc));
 546         if (rc) {
 547                 dev_err(enic, "error in allocation of cq for rq\n");
 548                 goto err_free_rq_exit;
 549         }
 550
 551         /* Allocate the mbuf ring */
 552         rq->mbuf_ring = (struct rte_mbuf **)rte_zmalloc_socket("rq->mbuf_ring",
 553                         sizeof(struct rte_mbuf *) * nb_desc,
 554                         RTE_CACHE_LINE_SIZE, rq->socket_id);
 555
 556         if (rq->mbuf_ring != NULL)
 557                 return 0;
 558
 559         /* cleanup on error */
 560         vnic_cq_free(&enic->cq[queue_idx]);
 561 err_free_rq_exit:
 562         vnic_rq_free(rq);
 563 err_exit:
 564         return -ENOMEM;
 565 }
 566
 567 void enic_free_wq(void *txq)
 568 {
 569         struct vnic_wq *wq = (struct vnic_wq *)txq;
 570         struct enic *enic = vnic_dev_priv(wq->vdev);
 571
 572         vnic_wq_free(wq);
 573         vnic_cq_free(&enic->cq[enic->rq_count + wq->index]);
 574 }
 575
 576 int enic_alloc_wq(struct enic *enic, uint16_t queue_idx,
 577         unsigned int socket_id, uint16_t nb_desc)
 578 {
 579         int err;
 580         struct vnic_wq *wq = &enic->wq[queue_idx];
 581         unsigned int cq_index = enic_cq_wq(enic, queue_idx);
 582
 583         wq->socket_id = socket_id;
 584         if (nb_desc) {
 585                 if (nb_desc > enic->config.wq_desc_count) {
 586                         dev_warning(enic,
 587                                 "WQ %d - number of tx desc in cmd line (%d)"\
 588                                 "is greater than that in the UCSM/CIMC adapter"\
 589                                 "policy.  Applying the value in the adapter "\
 590                                 "policy (%d)\n",
 591                                 queue_idx, nb_desc, enic->config.wq_desc_count);
 592                 } else if (nb_desc != enic->config.wq_desc_count) {
 593                         enic->config.wq_desc_count = nb_desc;
 594                         dev_info(enic,
 595                                 "TX Queues - effective number of descs:%d\n",
 596                                 nb_desc);
 597                 }
 598         }
 599
 600         /* Allocate queue resources */
 601         err = vnic_wq_alloc(enic->vdev, &enic->wq[queue_idx], queue_idx,
 602                 enic->config.wq_desc_count,
 603                 sizeof(struct wq_enet_desc));
 604         if (err) {
 605                 dev_err(enic, "error in allocation of wq\n");
 606                 return err;
 607         }
 608
 609         err = vnic_cq_alloc(enic->vdev, &enic->cq[cq_index], cq_index,
 610                 socket_id, enic->config.wq_desc_count,
 611                 sizeof(struct cq_enet_wq_desc));
 612         if (err) {
 613                 vnic_wq_free(wq);
 614                 dev_err(enic, "error in allocation of cq for wq\n");
 615         }
 616
 617         return err;
 618 }
 619
 620 int enic_disable(struct enic *enic)
 621 {
 622         unsigned int i;
 623         int err;
 624
 625         vnic_intr_mask(&enic->intr);
 626         (void)vnic_intr_masked(&enic->intr); /* flush write */
 627
 628         vnic_dev_disable(enic->vdev);
 629
 630         enic_clsf_destroy(enic);
 631
 632         if (!enic_is_sriov_vf(enic))
 633                 vnic_dev_del_addr(enic->vdev, enic->mac_addr);
 634
 635         for (i = 0; i < enic->wq_count; i++) {
 636                 err = vnic_wq_disable(&enic->wq[i]);
 637                 if (err)
 638                         return err;
 639         }
 640         for (i = 0; i < enic->rq_count; i++) {
 641                 err = vnic_rq_disable(&enic->rq[i]);
 642                 if (err)
 643                         return err;
 644         }
 645
 646         vnic_dev_set_reset_flag(enic->vdev, 1);
 647         vnic_dev_notify_unset(enic->vdev);
 648
 649         for (i = 0; i < enic->wq_count; i++)
 650                 vnic_wq_clean(&enic->wq[i], enic_free_wq_buf);
 651
 652         for (i = 0; i < enic->rq_count; i++)
 653                 vnic_rq_clean(&enic->rq[i], enic_free_rq_buf);
 654         for (i = 0; i < enic->cq_count; i++)
 655                 vnic_cq_clean(&enic->cq[i]);
 656         vnic_intr_clean(&enic->intr);
 657
 658         return 0;
 659 }
 660
 661 static int enic_dev_wait(struct vnic_dev *vdev,
 662         int (*start)(struct vnic_dev *, int),
 663         int (*finished)(struct vnic_dev *, int *),
 664         int arg)
 665 {
 666         int done;
 667         int err;
 668         int i;
 669
 670         err = start(vdev, arg);
 671         if (err)
 672                 return err;
 673
 674         /* Wait for func to complete...2 seconds max */
 675         for (i = 0; i < 2000; i++) {
 676                 err = finished(vdev, &done);
 677                 if (err)
 678                         return err;
 679                 if (done)
 680                         return 0;
 681                 usleep(1000);
 682         }
 683         return -ETIMEDOUT;
 684 }
 685
 686 static int enic_dev_open(struct enic *enic)
 687 {
 688         int err;
 689
 690         err = enic_dev_wait(enic->vdev, vnic_dev_open,
 691                 vnic_dev_open_done, 0);
 692         if (err)
 693                 dev_err(enic_get_dev(enic),
 694                         "vNIC device open failed, err %d\n", err);
 695
 696         return err;
 697 }
 698
 699 static int enic_set_rsskey(struct enic *enic)
 700 {
 701         dma_addr_t rss_key_buf_pa;
 702         union vnic_rss_key *rss_key_buf_va = NULL;
 703         static union vnic_rss_key rss_key = {
 704                 .key = {
 705                         [0] = {.b = {85, 67, 83, 97, 119, 101, 115, 111, 109, 101}},
 706                         [1] = {.b = {80, 65, 76, 79, 117, 110, 105, 113, 117, 101}},
 707                         [2] = {.b = {76, 73, 78, 85, 88, 114, 111, 99, 107, 115}},
 708                         [3] = {.b = {69, 78, 73, 67, 105, 115, 99, 111, 111, 108}},
 709                 }
 710         };
 711         int err;
 712         u8 name[NAME_MAX];
 713
 714         snprintf((char *)name, NAME_MAX, "rss_key-%s", enic->bdf_name);
 715         rss_key_buf_va = enic_alloc_consistent(enic, sizeof(union vnic_rss_key),
 716                 &rss_key_buf_pa, name);
 717         if (!rss_key_buf_va)
 718                 return -ENOMEM;
 719
 720         rte_memcpy(rss_key_buf_va, &rss_key, sizeof(union vnic_rss_key));
 721
 722         err = enic_set_rss_key(enic,
 723                 rss_key_buf_pa,
 724                 sizeof(union vnic_rss_key));
 725
 726         enic_free_consistent(enic->pdev, sizeof(union vnic_rss_key),
 727                 rss_key_buf_va, rss_key_buf_pa);
 728
 729         return err;
 730 }
 731
 732 static int enic_set_rsscpu(struct enic *enic, u8 rss_hash_bits)
 733 {
 734         dma_addr_t rss_cpu_buf_pa;
 735         union vnic_rss_cpu *rss_cpu_buf_va = NULL;
 736         int i;
 737         int err;
 738         u8 name[NAME_MAX];
 739
 740         snprintf((char *)name, NAME_MAX, "rss_cpu-%s", enic->bdf_name);
 741         rss_cpu_buf_va = enic_alloc_consistent(enic, sizeof(union vnic_rss_cpu),
 742                 &rss_cpu_buf_pa, name);
 743         if (!rss_cpu_buf_va)
 744                 return -ENOMEM;
 745
 746         for (i = 0; i < (1 << rss_hash_bits); i++)
 747                 (*rss_cpu_buf_va).cpu[i/4].b[i%4] = i % enic->rq_count;
 748
 749         err = enic_set_rss_cpu(enic,
 750                 rss_cpu_buf_pa,
 751                 sizeof(union vnic_rss_cpu));
 752
 753         enic_free_consistent(enic->pdev, sizeof(union vnic_rss_cpu),
 754                 rss_cpu_buf_va, rss_cpu_buf_pa);
 755
 756         return err;
 757 }
 758
 759 static int enic_set_niccfg(struct enic *enic, u8 rss_default_cpu,
 760         u8 rss_hash_type, u8 rss_hash_bits, u8 rss_base_cpu, u8 rss_enable)
 761 {
 762         const u8 tso_ipid_split_en = 0;
 763         int err;
 764
 765         /* Enable VLAN tag stripping */
 766
 767         err = enic_set_nic_cfg(enic,
 768                 rss_default_cpu, rss_hash_type,
 769                 rss_hash_bits, rss_base_cpu,
 770                 rss_enable, tso_ipid_split_en,
 771                 enic->ig_vlan_strip_en);
 772
 773         return err;
 774 }
 775
 776 int enic_set_rss_nic_cfg(struct enic *enic)
 777 {
 778         const u8 rss_default_cpu = 0;
 779         const u8 rss_hash_type = NIC_CFG_RSS_HASH_TYPE_IPV4 |
 780             NIC_CFG_RSS_HASH_TYPE_TCP_IPV4 |
 781             NIC_CFG_RSS_HASH_TYPE_IPV6 |
 782             NIC_CFG_RSS_HASH_TYPE_TCP_IPV6;
 783         const u8 rss_hash_bits = 7;
 784         const u8 rss_base_cpu = 0;
 785         u8 rss_enable = ENIC_SETTING(enic, RSS) && (enic->rq_count > 1);
 786
 787         if (rss_enable) {
 788                 if (!enic_set_rsskey(enic)) {
 789                         if (enic_set_rsscpu(enic, rss_hash_bits)) {
 790                                 rss_enable = 0;
 791                                 dev_warning(enic, "RSS disabled, "\
 792                                         "Failed to set RSS cpu indirection table.");
 793                         }
 794                 } else {
 795                         rss_enable = 0;
 796                         dev_warning(enic,
 797                                 "RSS disabled, Failed to set RSS key.\n");
 798                 }
 799         }
 800
 801         return enic_set_niccfg(enic, rss_default_cpu, rss_hash_type,
 802                 rss_hash_bits, rss_base_cpu, rss_enable);
 803 }
 804
 805 int enic_setup_finish(struct enic *enic)
 806 {
 807         int ret;
 808
 809         ret = enic_set_rss_nic_cfg(enic);
 810         if (ret) {
 811                 dev_err(enic, "Failed to config nic, aborting.\n");
 812                 return -1;
 813         }
 814
 815         vnic_dev_add_addr(enic->vdev, enic->mac_addr);
 816
 817         /* Default conf */
 818         vnic_dev_packet_filter(enic->vdev,
 819                 1 /* directed  */,
 820                 1 /* multicast */,
 821                 1 /* broadcast */,
 822                 0 /* promisc   */,
 823                 1 /* allmulti  */);
 824
 825         enic->promisc = 0;
 826         enic->allmulti = 1;
 827
 828         return 0;
 829 }
 830
 831 void enic_add_packet_filter(struct enic *enic)
 832 {
 833         /* Args -> directed, multicast, broadcast, promisc, allmulti */
 834         vnic_dev_packet_filter(enic->vdev, 1, 1, 1,
 835                 enic->promisc, enic->allmulti);
 836 }
 837
 838 int enic_get_link_status(struct enic *enic)
 839 {
 840         return vnic_dev_link_status(enic->vdev);
 841 }
 842
 843 static void enic_dev_deinit(struct enic *enic)
 844 {
 845         struct rte_eth_dev *eth_dev = enic->rte_dev;
 846
 847         rte_free(eth_dev->data->mac_addrs);
 848 }
 849
 850
 851 int enic_set_vnic_res(struct enic *enic)
 852 {
 853         struct rte_eth_dev *eth_dev = enic->rte_dev;
 854
 855         if ((enic->rq_count < eth_dev->data->nb_rx_queues) ||
 856                 (enic->wq_count < eth_dev->data->nb_tx_queues)) {
 857                 dev_err(dev, "Not enough resources configured, aborting\n");
 858                 return -1;
 859         }
 860
 861         enic->rq_count = eth_dev->data->nb_rx_queues;
 862         enic->wq_count = eth_dev->data->nb_tx_queues;
 863         if (enic->cq_count < (enic->rq_count + enic->wq_count)) {
 864                 dev_err(dev, "Not enough resources configured, aborting\n");
 865                 return -1;
 866         }
 867
 868         enic->cq_count = enic->rq_count + enic->wq_count;
 869         return 0;
 870 }
 871
 872 static int enic_dev_init(struct enic *enic)
 873 {
 874         int err;
 875         struct rte_eth_dev *eth_dev = enic->rte_dev;
 876
 877         vnic_dev_intr_coal_timer_info_default(enic->vdev);
 878
 879         /* Get vNIC configuration
 880         */
 881         err = enic_get_vnic_config(enic);
 882         if (err) {
 883                 dev_err(dev, "Get vNIC configuration failed, aborting\n");
 884                 return err;
 885         }
 886
 887         eth_dev->data->mac_addrs = rte_zmalloc("enic_mac_addr", ETH_ALEN, 0);
 888         if (!eth_dev->data->mac_addrs) {
 889                 dev_err(enic, "mac addr storage alloc failed, aborting.\n");
 890                 return -1;
 891         }
 892         ether_addr_copy((struct ether_addr *) enic->mac_addr,
 893                 &eth_dev->data->mac_addrs[0]);
 894
 895
 896         /* Get available resource counts
 897         */
 898         enic_get_res_counts(enic);
 899
 900         vnic_dev_set_reset_flag(enic->vdev, 0);
 901
 902         return 0;
 903
 904 }
 905
 906 int enic_probe(struct enic *enic)
 907 {
 908         struct rte_pci_device *pdev = enic->pdev;
 909         int err = -1;
 910
 911         dev_debug(enic, " Initializing ENIC PMD version %s\n", DRV_VERSION);
 912
 913         enic->bar0.vaddr = (void *)pdev->mem_resource[0].addr;
 914         enic->bar0.len = pdev->mem_resource[0].len;
 915
 916         /* Register vNIC device */
 917         enic->vdev = vnic_dev_register(NULL, enic, enic->pdev, &enic->bar0, 1);
 918         if (!enic->vdev) {
 919                 dev_err(enic, "vNIC registration failed, aborting\n");
 920                 goto err_out;
 921         }
 922
 923         vnic_register_cbacks(enic->vdev,
 924                 enic_alloc_consistent,
 925                 enic_free_consistent);
 926
 927         /* Issue device open to get device in known state */
 928         err = enic_dev_open(enic);
 929         if (err) {
 930                 dev_err(enic, "vNIC dev open failed, aborting\n");
 931                 goto err_out_unregister;
 932         }
 933
 934         /* Set ingress vlan rewrite mode before vnic initialization */
 935         err = vnic_dev_set_ig_vlan_rewrite_mode(enic->vdev,
 936                 IG_VLAN_REWRITE_MODE_PASS_THRU);
 937         if (err) {
 938                 dev_err(enic,
 939                         "Failed to set ingress vlan rewrite mode, aborting.\n");
 940                 goto err_out_dev_close;
 941         }
 942
 943         /* Issue device init to initialize the vnic-to-switch link.
 944          * We'll start with carrier off and wait for link UP
 945          * notification later to turn on carrier.  We don't need
 946          * to wait here for the vnic-to-switch link initialization
 947          * to complete; link UP notification is the indication that
 948          * the process is complete.
 949          */
 950
 951         err = vnic_dev_init(enic->vdev, 0);
 952         if (err) {
 953                 dev_err(enic, "vNIC dev init failed, aborting\n");
 954                 goto err_out_dev_close;
 955         }
 956
 957         err = enic_dev_init(enic);
 958         if (err) {
 959                 dev_err(enic, "Device initialization failed, aborting\n");
 960                 goto err_out_dev_close;
 961         }
 962
 963         return 0;
 964
 965 err_out_dev_close:
 966         vnic_dev_close(enic->vdev);
 967 err_out_unregister:
 968         vnic_dev_unregister(enic->vdev);
 969 err_out:
 970         return err;
 971 }
 972
 973 void enic_remove(struct enic *enic)
 974 {
 975         enic_dev_deinit(enic);
 976         vnic_dev_close(enic->vdev);
 977         vnic_dev_unregister(enic->vdev);
 978 }