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