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