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