drivers/net/enic/enic_main.c

   1 /*
   2  * Copyright 2008-2014 Cisco Systems, Inc.  All rights reserved.
   3  * Copyright 2007 Nuova Systems, Inc.  All rights reserved.
   4  *
   5  * Copyright (c) 2014, Cisco Systems, Inc.
   6  * All rights reserved.
   7  *
   8  * Redistribution and use in source and binary forms, with or without
   9  * modification, are permitted provided that the following conditions
  10  * are met:
  11  *
  12  * 1. Redistributions of source code must retain the above copyright
  13  * notice, this list of conditions and the following disclaimer.
  14  *
  15  * 2. Redistributions in binary form must reproduce the above copyright
  16  * notice, this list of conditions and the following disclaimer in
  17  * the documentation and/or other materials provided with the
  18  * distribution.
  19  *
  20  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
  21  * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
  22  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
  23  * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
  24  * COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
  25  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
  26  * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
  27  * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
  28  * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  29  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
  30  * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
  31  * POSSIBILITY OF SUCH DAMAGE.
  32  *
  33  */
  34
  35 #include <stdio.h>
  36
  37 #include <sys/stat.h>
  38 #include <sys/mman.h>
  39 #include <fcntl.h>
  40 #include <libgen.h>
  41
  42 #include <rte_pci.h>
  43 #include <rte_memzone.h>
  44 #include <rte_malloc.h>
  45 #include <rte_mbuf.h>
  46 #include <rte_string_fns.h>
  47 #include <rte_ethdev.h>
  48
  49 #include "enic_compat.h"
  50 #include "enic.h"
  51 #include "wq_enet_desc.h"
  52 #include "rq_enet_desc.h"
  53 #include "cq_enet_desc.h"
  54 #include "vnic_enet.h"
  55 #include "vnic_dev.h"
  56 #include "vnic_wq.h"
  57 #include "vnic_rq.h"
  58 #include "vnic_cq.h"
  59 #include "vnic_intr.h"
  60 #include "vnic_nic.h"
  61
  62 static inline int enic_is_sriov_vf(struct enic *enic)
  63 {
  64         return enic->pdev->id.device_id == PCI_DEVICE_ID_CISCO_VIC_ENET_VF;
  65 }
  66
  67 static int is_zero_addr(uint8_t *addr)
  68 {
  69         return !(addr[0] |  addr[1] | addr[2] | addr[3] | addr[4] | addr[5]);
  70 }
  71
  72 static int is_mcast_addr(uint8_t *addr)
  73 {
  74         return addr[0] & 1;
  75 }
  76
  77 static int is_eth_addr_valid(uint8_t *addr)
  78 {
  79         return !is_mcast_addr(addr) && !is_zero_addr(addr);
  80 }
  81
  82 static void
  83 enic_rxmbuf_queue_release(__rte_unused struct enic *enic, struct vnic_rq *rq)
  84 {
  85         uint16_t i;
  86
  87         if (!rq || !rq->mbuf_ring) {
  88                 dev_debug(enic, "Pointer to rq or mbuf_ring is NULL");
  89                 return;
  90         }
  91
  92         for (i = 0; i < rq->ring.desc_count; i++) {
  93                 if (rq->mbuf_ring[i]) {
  94                         rte_pktmbuf_free_seg(rq->mbuf_ring[i]);
  95                         rq->mbuf_ring[i] = NULL;
  96                 }
  97         }
  98 }
  99
 100 void enic_set_hdr_split_size(struct enic *enic, u16 split_hdr_size)
 101 {
 102         vnic_set_hdr_split_size(enic->vdev, split_hdr_size);
 103 }
 104
 105 static void enic_free_wq_buf(struct vnic_wq_buf *buf)
 106 {
 107         struct rte_mbuf *mbuf = (struct rte_mbuf *)buf->mb;
 108
 109         rte_mempool_put(mbuf->pool, mbuf);
 110         buf->mb = NULL;
 111 }
 112
 113 static void enic_log_q_error(struct enic *enic)
 114 {
 115         unsigned int i;
 116         u32 error_status;
 117
 118         for (i = 0; i < enic->wq_count; i++) {
 119                 error_status = vnic_wq_error_status(&enic->wq[i]);
 120                 if (error_status)
 121                         dev_err(enic, "WQ[%d] error_status %d\n", i,
 122                                 error_status);
 123         }
 124
 125         for (i = 0; i < enic_vnic_rq_count(enic); i++) {
 126                 error_status = vnic_rq_error_status(&enic->rq[i]);
 127                 if (error_status)
 128                         dev_err(enic, "RQ[%d] error_status %d\n", i,
 129                                 error_status);
 130         }
 131 }
 132
 133 static void enic_clear_soft_stats(struct enic *enic)
 134 {
 135         struct enic_soft_stats *soft_stats = &enic->soft_stats;
 136         rte_atomic64_clear(&soft_stats->rx_nombuf);
 137         rte_atomic64_clear(&soft_stats->rx_packet_errors);
 138 }
 139
 140 static void enic_init_soft_stats(struct enic *enic)
 141 {
 142         struct enic_soft_stats *soft_stats = &enic->soft_stats;
 143         rte_atomic64_init(&soft_stats->rx_nombuf);
 144         rte_atomic64_init(&soft_stats->rx_packet_errors);
 145         enic_clear_soft_stats(enic);
 146 }
 147
 148 void enic_dev_stats_clear(struct enic *enic)
 149 {
 150         if (vnic_dev_stats_clear(enic->vdev))
 151                 dev_err(enic, "Error in clearing stats\n");
 152         enic_clear_soft_stats(enic);
 153 }
 154
 155 void enic_dev_stats_get(struct enic *enic, struct rte_eth_stats *r_stats)
 156 {
 157         struct vnic_stats *stats;
 158         struct enic_soft_stats *soft_stats = &enic->soft_stats;
 159         int64_t rx_truncated;
 160         uint64_t rx_packet_errors;
 161
 162         if (vnic_dev_stats_dump(enic->vdev, &stats)) {
 163                 dev_err(enic, "Error in getting stats\n");
 164                 return;
 165         }
 166
 167         /* The number of truncated packets can only be calculated by
 168          * subtracting a hardware counter from error packets received by
 169          * the driver. Note: this causes transient inaccuracies in the
 170          * ipackets count. Also, the length of truncated packets are
 171          * counted in ibytes even though truncated packets are dropped
 172          * which can make ibytes be slightly higher than it should be.
 173          */
 174         rx_packet_errors = rte_atomic64_read(&soft_stats->rx_packet_errors);
 175         rx_truncated = rx_packet_errors - stats->rx.rx_errors;
 176
 177         r_stats->ipackets = stats->rx.rx_frames_ok - rx_truncated;
 178         r_stats->opackets = stats->tx.tx_frames_ok;
 179
 180         r_stats->ibytes = stats->rx.rx_bytes_ok;
 181         r_stats->obytes = stats->tx.tx_bytes_ok;
 182
 183         r_stats->ierrors = stats->rx.rx_errors + stats->rx.rx_drop;
 184         r_stats->oerrors = stats->tx.tx_errors;
 185
 186         r_stats->imissed = stats->rx.rx_no_bufs + rx_truncated;
 187
 188         r_stats->rx_nombuf = rte_atomic64_read(&soft_stats->rx_nombuf);
 189 }
 190
 191 void enic_del_mac_address(struct enic *enic)
 192 {
 193         if (vnic_dev_del_addr(enic->vdev, enic->mac_addr))
 194                 dev_err(enic, "del mac addr failed\n");
 195 }
 196
 197 void enic_set_mac_address(struct enic *enic, uint8_t *mac_addr)
 198 {
 199         int err;
 200
 201         if (!is_eth_addr_valid(mac_addr)) {
 202                 dev_err(enic, "invalid mac address\n");
 203                 return;
 204         }
 205
 206         err = vnic_dev_del_addr(enic->vdev, mac_addr);
 207         if (err) {
 208                 dev_err(enic, "del mac addr failed\n");
 209                 return;
 210         }
 211
 212         ether_addr_copy((struct ether_addr *)mac_addr,
 213                 (struct ether_addr *)enic->mac_addr);
 214
 215         err = vnic_dev_add_addr(enic->vdev, mac_addr);
 216         if (err) {
 217                 dev_err(enic, "add mac addr failed\n");
 218                 return;
 219         }
 220 }
 221
 222 static void
 223 enic_free_rq_buf(struct rte_mbuf **mbuf)
 224 {
 225         if (*mbuf == NULL)
 226                 return;
 227
 228         rte_pktmbuf_free(*mbuf);
 229         mbuf = NULL;
 230 }
 231
 232 void enic_init_vnic_resources(struct enic *enic)
 233 {
 234         unsigned int error_interrupt_enable = 1;
 235         unsigned int error_interrupt_offset = 0;
 236         unsigned int index = 0;
 237         unsigned int cq_idx;
 238         struct vnic_rq *data_rq;
 239
 240         for (index = 0; index < enic->rq_count; index++) {
 241                 vnic_rq_init(&enic->rq[enic_sop_rq(index)],
 242                         enic_cq_rq(enic, index),
 243                         error_interrupt_enable,
 244                         error_interrupt_offset);
 245
 246                 data_rq = &enic->rq[enic_data_rq(index)];
 247                 if (data_rq->in_use)
 248                         vnic_rq_init(data_rq,
 249                                      enic_cq_rq(enic, index),
 250                                      error_interrupt_enable,
 251                                      error_interrupt_offset);
 252
 253                 cq_idx = enic_cq_rq(enic, index);
 254                 vnic_cq_init(&enic->cq[cq_idx],
 255                         0 /* flow_control_enable */,
 256                         1 /* color_enable */,
 257                         0 /* cq_head */,
 258                         0 /* cq_tail */,
 259                         1 /* cq_tail_color */,
 260                         0 /* interrupt_enable */,
 261                         1 /* cq_entry_enable */,
 262                         0 /* cq_message_enable */,
 263                         0 /* interrupt offset */,
 264                         0 /* cq_message_addr */);
 265         }
 266
 267         for (index = 0; index < enic->wq_count; index++) {
 268                 vnic_wq_init(&enic->wq[index],
 269                         enic_cq_wq(enic, index),
 270                         error_interrupt_enable,
 271                         error_interrupt_offset);
 272
 273                 cq_idx = enic_cq_wq(enic, index);
 274                 vnic_cq_init(&enic->cq[cq_idx],
 275                         0 /* flow_control_enable */,
 276                         1 /* color_enable */,
 277                         0 /* cq_head */,
 278                         0 /* cq_tail */,
 279                         1 /* cq_tail_color */,
 280                         0 /* interrupt_enable */,
 281                         0 /* cq_entry_enable */,
 282                         1 /* cq_message_enable */,
 283                         0 /* interrupt offset */,
 284                         (u64)enic->wq[index].cqmsg_rz->phys_addr);
 285         }
 286
 287         vnic_intr_init(&enic->intr,
 288                 enic->config.intr_timer_usec,
 289                 enic->config.intr_timer_type,
 290                 /*mask_on_assertion*/1);
 291 }
 292
 293
 294 static int
 295 enic_alloc_rx_queue_mbufs(struct enic *enic, struct vnic_rq *rq)
 296 {
 297         struct rte_mbuf *mb;
 298         struct rq_enet_desc *rqd = rq->ring.descs;
 299         unsigned i;
 300         dma_addr_t dma_addr;
 301
 302         if (!rq->in_use)
 303                 return 0;
 304
 305         dev_debug(enic, "queue %u, allocating %u rx queue mbufs\n", rq->index,
 306                   rq->ring.desc_count);
 307
 308         for (i = 0; i < rq->ring.desc_count; i++, rqd++) {
 309                 mb = rte_mbuf_raw_alloc(rq->mp);
 310                 if (mb == NULL) {
 311                         dev_err(enic, "RX mbuf alloc failed queue_id=%u\n",
 312                         (unsigned)rq->index);
 313                         return -ENOMEM;
 314                 }
 315
 316                 dma_addr = (dma_addr_t)(mb->buf_physaddr
 317                            + RTE_PKTMBUF_HEADROOM);
 318                 rq_enet_desc_enc(rqd, dma_addr,
 319                                 (rq->is_sop ? RQ_ENET_TYPE_ONLY_SOP
 320                                 : RQ_ENET_TYPE_NOT_SOP),
 321                                 mb->buf_len - RTE_PKTMBUF_HEADROOM);
 322                 rq->mbuf_ring[i] = mb;
 323         }
 324
 325         /* make sure all prior writes are complete before doing the PIO write */
 326         rte_rmb();
 327
 328         /* Post all but the last buffer to VIC. */
 329         rq->posted_index = rq->ring.desc_count - 1;
 330
 331         rq->rx_nb_hold = 0;
 332
 333         dev_debug(enic, "port=%u, qidx=%u, Write %u posted idx, %u sw held\n",
 334                 enic->port_id, rq->index, rq->posted_index, rq->rx_nb_hold);
 335         iowrite32(rq->posted_index, &rq->ctrl->posted_index);
 336         rte_rmb();
 337
 338         return 0;
 339
 340 }
 341
 342 static void *
 343 enic_alloc_consistent(__rte_unused void *priv, size_t size,
 344         dma_addr_t *dma_handle, u8 *name)
 345 {
 346         void *vaddr;
 347         const struct rte_memzone *rz;
 348         *dma_handle = 0;
 349
 350         rz = rte_memzone_reserve_aligned((const char *)name,
 351                                          size, SOCKET_ID_ANY, 0, ENIC_ALIGN);
 352         if (!rz) {
 353                 pr_err("%s : Failed to allocate memory requested for %s\n",
 354                         __func__, name);
 355                 return NULL;
 356         }
 357
 358         vaddr = rz->addr;
 359         *dma_handle = (dma_addr_t)rz->phys_addr;
 360
 361         return vaddr;
 362 }
 363
 364 static void
 365 enic_free_consistent(__rte_unused struct rte_pci_device *hwdev,
 366         __rte_unused size_t size,
 367         __rte_unused void *vaddr,
 368         __rte_unused dma_addr_t dma_handle)
 369 {
 370         /* Nothing to be done */
 371 }
 372
 373 static void
 374 enic_intr_handler(__rte_unused struct rte_intr_handle *handle,
 375         void *arg)
 376 {
 377         struct enic *enic = pmd_priv((struct rte_eth_dev *)arg);
 378
 379         vnic_intr_return_all_credits(&enic->intr);
 380
 381         enic_log_q_error(enic);
 382 }
 383
 384 int enic_enable(struct enic *enic)
 385 {
 386         unsigned int index;
 387         int err;
 388         struct rte_eth_dev *eth_dev = enic->rte_dev;
 389
 390         eth_dev->data->dev_link.link_speed = vnic_dev_port_speed(enic->vdev);
 391         eth_dev->data->dev_link.link_duplex = ETH_LINK_FULL_DUPLEX;
 392         vnic_dev_notify_set(enic->vdev, -1); /* No Intr for notify */
 393
 394         if (enic_clsf_init(enic))
 395                 dev_warning(enic, "Init of hash table for clsf failed."\
 396                         "Flow director feature will not work\n");
 397
 398         for (index = 0; index < enic->rq_count; index++) {
 399                 err = enic_alloc_rx_queue_mbufs(enic,
 400                         &enic->rq[enic_sop_rq(index)]);
 401                 if (err) {
 402                         dev_err(enic, "Failed to alloc sop RX queue mbufs\n");
 403                         return err;
 404                 }
 405                 err = enic_alloc_rx_queue_mbufs(enic,
 406                         &enic->rq[enic_data_rq(index)]);
 407                 if (err) {
 408                         /* release the allocated mbufs for the sop rq*/
 409                         enic_rxmbuf_queue_release(enic,
 410                                 &enic->rq[enic_sop_rq(index)]);
 411
 412                         dev_err(enic, "Failed to alloc data RX queue mbufs\n");
 413                         return err;
 414                 }
 415         }
 416
 417         for (index = 0; index < enic->wq_count; index++)
 418                 enic_start_wq(enic, index);
 419         for (index = 0; index < enic->rq_count; index++)
 420                 enic_start_rq(enic, index);
 421
 422         vnic_dev_enable_wait(enic->vdev);
 423
 424         /* Register and enable error interrupt */
 425         rte_intr_callback_register(&(enic->pdev->intr_handle),
 426                 enic_intr_handler, (void *)enic->rte_dev);
 427
 428         rte_intr_enable(&(enic->pdev->intr_handle));
 429         vnic_intr_unmask(&enic->intr);
 430
 431         return 0;
 432 }
 433
 434 int enic_alloc_intr_resources(struct enic *enic)
 435 {
 436         int err;
 437
 438         dev_info(enic, "vNIC resources used:  "\
 439                 "wq %d rq %d cq %d intr %d\n",
 440                 enic->wq_count, enic_vnic_rq_count(enic),
 441                 enic->cq_count, enic->intr_count);
 442
 443         err = vnic_intr_alloc(enic->vdev, &enic->intr, 0);
 444         if (err)
 445                 enic_free_vnic_resources(enic);
 446
 447         return err;
 448 }
 449
 450 void enic_free_rq(void *rxq)
 451 {
 452         struct vnic_rq *rq_sop, *rq_data;
 453         struct enic *enic;
 454
 455         if (rxq == NULL)
 456                 return;
 457
 458         rq_sop = (struct vnic_rq *)rxq;
 459         enic = vnic_dev_priv(rq_sop->vdev);
 460         rq_data = &enic->rq[rq_sop->data_queue_idx];
 461
 462         enic_rxmbuf_queue_release(enic, rq_sop);
 463         if (rq_data->in_use)
 464                 enic_rxmbuf_queue_release(enic, rq_data);
 465
 466         rte_free(rq_sop->mbuf_ring);
 467         if (rq_data->in_use)
 468                 rte_free(rq_data->mbuf_ring);
 469
 470         rq_sop->mbuf_ring = NULL;
 471         rq_data->mbuf_ring = NULL;
 472
 473         vnic_rq_free(rq_sop);
 474         if (rq_data->in_use)
 475                 vnic_rq_free(rq_data);
 476
 477         vnic_cq_free(&enic->cq[rq_sop->index]);
 478 }
 479
 480 void enic_start_wq(struct enic *enic, uint16_t queue_idx)
 481 {
 482         vnic_wq_enable(&enic->wq[queue_idx]);
 483 }
 484
 485 int enic_stop_wq(struct enic *enic, uint16_t queue_idx)
 486 {
 487         return vnic_wq_disable(&enic->wq[queue_idx]);
 488 }
 489
 490 void enic_start_rq(struct enic *enic, uint16_t queue_idx)
 491 {
 492         struct vnic_rq *rq_sop = &enic->rq[enic_sop_rq(queue_idx)];
 493         struct vnic_rq *rq_data = &enic->rq[rq_sop->data_queue_idx];
 494
 495         if (rq_data->in_use)
 496                 vnic_rq_enable(rq_data);
 497         rte_mb();
 498         vnic_rq_enable(rq_sop);
 499
 500 }
 501
 502 int enic_stop_rq(struct enic *enic, uint16_t queue_idx)
 503 {
 504         int ret1 = 0, ret2 = 0;
 505
 506         struct vnic_rq *rq_sop = &enic->rq[enic_sop_rq(queue_idx)];
 507         struct vnic_rq *rq_data = &enic->rq[rq_sop->data_queue_idx];
 508
 509         ret2 = vnic_rq_disable(rq_sop);
 510         rte_mb();
 511         if (rq_data->in_use)
 512                 ret1 = vnic_rq_disable(rq_data);
 513
 514         if (ret2)
 515                 return ret2;
 516         else
 517                 return ret1;
 518 }
 519
 520 int enic_alloc_rq(struct enic *enic, uint16_t queue_idx,
 521         unsigned int socket_id, struct rte_mempool *mp,
 522         uint16_t nb_desc)
 523 {
 524         int rc;
 525         uint16_t sop_queue_idx = enic_sop_rq(queue_idx);
 526         uint16_t data_queue_idx = enic_data_rq(queue_idx);
 527         struct vnic_rq *rq_sop = &enic->rq[sop_queue_idx];
 528         struct vnic_rq *rq_data = &enic->rq[data_queue_idx];
 529         unsigned int mbuf_size, mbufs_per_pkt;
 530         unsigned int nb_sop_desc, nb_data_desc;
 531         uint16_t min_sop, max_sop, min_data, max_data;
 532
 533         rq_sop->is_sop = 1;
 534         rq_sop->data_queue_idx = data_queue_idx;
 535         rq_data->is_sop = 0;
 536         rq_data->data_queue_idx = 0;
 537         rq_sop->socket_id = socket_id;
 538         rq_sop->mp = mp;
 539         rq_data->socket_id = socket_id;
 540         rq_data->mp = mp;
 541         rq_sop->in_use = 1;
 542
 543         mbuf_size = (uint16_t)(rte_pktmbuf_data_room_size(mp) -
 544                                RTE_PKTMBUF_HEADROOM);
 545
 546         if (enic->rte_dev->data->dev_conf.rxmode.enable_scatter) {
 547                 dev_info(enic, "Scatter rx mode enabled\n");
 548                 /* ceil((mtu + ETHER_HDR_LEN + 4)/mbuf_size) */
 549                 mbufs_per_pkt = ((enic->config.mtu + ETHER_HDR_LEN + 4) +
 550                                  (mbuf_size - 1)) / mbuf_size;
 551         } else {
 552                 dev_info(enic, "Scatter rx mode disabled\n");
 553                 mbufs_per_pkt = 1;
 554         }
 555
 556         if (mbufs_per_pkt > 1) {
 557                 dev_info(enic, "Scatter rx mode in use\n");
 558                 rq_data->in_use = 1;
 559         } else {
 560                 dev_info(enic, "Scatter rx mode not being used\n");
 561                 rq_data->in_use = 0;
 562         }
 563
 564         /* number of descriptors have to be a multiple of 32 */
 565         nb_sop_desc = (nb_desc / mbufs_per_pkt) & ~0x1F;
 566         nb_data_desc = (nb_desc - nb_sop_desc) & ~0x1F;
 567
 568         rq_sop->max_mbufs_per_pkt = mbufs_per_pkt;
 569         rq_data->max_mbufs_per_pkt = mbufs_per_pkt;
 570
 571         if (mbufs_per_pkt > 1) {
 572                 min_sop = 64;
 573                 max_sop = ((enic->config.rq_desc_count /
 574                             (mbufs_per_pkt - 1)) & ~0x1F);
 575                 min_data = min_sop * (mbufs_per_pkt - 1);
 576                 max_data = enic->config.rq_desc_count;
 577         } else {
 578                 min_sop = 64;
 579                 max_sop = enic->config.rq_desc_count;
 580                 min_data = 0;
 581                 max_data = 0;
 582         }
 583
 584         if (nb_desc < (min_sop + min_data)) {
 585                 dev_warning(enic,
 586                             "Number of rx descs too low, adjusting to minimum\n");
 587                 nb_sop_desc = min_sop;
 588                 nb_data_desc = min_data;
 589         } else if (nb_desc > (max_sop + max_data)) {
 590                 dev_warning(enic,
 591                             "Number of rx_descs too high, adjusting to maximum\n");
 592                 nb_sop_desc = max_sop;
 593                 nb_data_desc = max_data;
 594         }
 595         if (mbufs_per_pkt > 1) {
 596                 dev_info(enic, "For mtu %d and mbuf size %d valid rx descriptor range is %d to %d\n",
 597                          enic->config.mtu, mbuf_size, min_sop + min_data,
 598                          max_sop + max_data);
 599         }
 600         dev_info(enic, "Using %d rx descriptors (sop %d, data %d)\n",
 601                  nb_sop_desc + nb_data_desc, nb_sop_desc, nb_data_desc);
 602
 603         /* Allocate sop queue resources */
 604         rc = vnic_rq_alloc(enic->vdev, rq_sop, sop_queue_idx,
 605                 nb_sop_desc, sizeof(struct rq_enet_desc));
 606         if (rc) {
 607                 dev_err(enic, "error in allocation of sop rq\n");
 608                 goto err_exit;
 609         }
 610         nb_sop_desc = rq_sop->ring.desc_count;
 611
 612         if (rq_data->in_use) {
 613                 /* Allocate data queue resources */
 614                 rc = vnic_rq_alloc(enic->vdev, rq_data, data_queue_idx,
 615                                    nb_data_desc,
 616                                    sizeof(struct rq_enet_desc));
 617                 if (rc) {
 618                         dev_err(enic, "error in allocation of data rq\n");
 619                         goto err_free_rq_sop;
 620                 }
 621                 nb_data_desc = rq_data->ring.desc_count;
 622         }
 623         rc = vnic_cq_alloc(enic->vdev, &enic->cq[queue_idx], queue_idx,
 624                            socket_id, nb_sop_desc + nb_data_desc,
 625                            sizeof(struct cq_enet_rq_desc));
 626         if (rc) {
 627                 dev_err(enic, "error in allocation of cq for rq\n");
 628                 goto err_free_rq_data;
 629         }
 630
 631         /* Allocate the mbuf rings */
 632         rq_sop->mbuf_ring = (struct rte_mbuf **)
 633                 rte_zmalloc_socket("rq->mbuf_ring",
 634                                    sizeof(struct rte_mbuf *) * nb_sop_desc,
 635                                    RTE_CACHE_LINE_SIZE, rq_sop->socket_id);
 636         if (rq_sop->mbuf_ring == NULL)
 637                 goto err_free_cq;
 638
 639         if (rq_data->in_use) {
 640                 rq_data->mbuf_ring = (struct rte_mbuf **)
 641                         rte_zmalloc_socket("rq->mbuf_ring",
 642                                 sizeof(struct rte_mbuf *) * nb_data_desc,
 643                                 RTE_CACHE_LINE_SIZE, rq_sop->socket_id);
 644                 if (rq_data->mbuf_ring == NULL)
 645                         goto err_free_sop_mbuf;
 646         }
 647
 648         return 0;
 649
 650 err_free_sop_mbuf:
 651         rte_free(rq_sop->mbuf_ring);
 652 err_free_cq:
 653         /* cleanup on error */
 654         vnic_cq_free(&enic->cq[queue_idx]);
 655 err_free_rq_data:
 656         if (rq_data->in_use)
 657                 vnic_rq_free(rq_data);
 658 err_free_rq_sop:
 659         vnic_rq_free(rq_sop);
 660 err_exit:
 661         return -ENOMEM;
 662 }
 663
 664 void enic_free_wq(void *txq)
 665 {
 666         struct vnic_wq *wq;
 667         struct enic *enic;
 668
 669         if (txq == NULL)
 670                 return;
 671
 672         wq = (struct vnic_wq *)txq;
 673         enic = vnic_dev_priv(wq->vdev);
 674         rte_memzone_free(wq->cqmsg_rz);
 675         vnic_wq_free(wq);
 676         vnic_cq_free(&enic->cq[enic->rq_count + wq->index]);
 677 }
 678
 679 int enic_alloc_wq(struct enic *enic, uint16_t queue_idx,
 680         unsigned int socket_id, uint16_t nb_desc)
 681 {
 682         int err;
 683         struct vnic_wq *wq = &enic->wq[queue_idx];
 684         unsigned int cq_index = enic_cq_wq(enic, queue_idx);
 685         char name[NAME_MAX];
 686         static int instance;
 687
 688         wq->socket_id = socket_id;
 689         if (nb_desc) {
 690                 if (nb_desc > enic->config.wq_desc_count) {
 691                         dev_warning(enic,
 692                                 "WQ %d - number of tx desc in cmd line (%d)"\
 693                                 "is greater than that in the UCSM/CIMC adapter"\
 694                                 "policy.  Applying the value in the adapter "\
 695                                 "policy (%d)\n",
 696                                 queue_idx, nb_desc, enic->config.wq_desc_count);
 697                 } else if (nb_desc != enic->config.wq_desc_count) {
 698                         enic->config.wq_desc_count = nb_desc;
 699                         dev_info(enic,
 700                                 "TX Queues - effective number of descs:%d\n",
 701                                 nb_desc);
 702                 }
 703         }
 704
 705         /* Allocate queue resources */
 706         err = vnic_wq_alloc(enic->vdev, &enic->wq[queue_idx], queue_idx,
 707                 enic->config.wq_desc_count,
 708                 sizeof(struct wq_enet_desc));
 709         if (err) {
 710                 dev_err(enic, "error in allocation of wq\n");
 711                 return err;
 712         }
 713
 714         err = vnic_cq_alloc(enic->vdev, &enic->cq[cq_index], cq_index,
 715                 socket_id, enic->config.wq_desc_count,
 716                 sizeof(struct cq_enet_wq_desc));
 717         if (err) {
 718                 vnic_wq_free(wq);
 719                 dev_err(enic, "error in allocation of cq for wq\n");
 720         }
 721
 722         /* setup up CQ message */
 723         snprintf((char *)name, sizeof(name),
 724                  "vnic_cqmsg-%s-%d-%d", enic->bdf_name, queue_idx,
 725                 instance++);
 726
 727         wq->cqmsg_rz = rte_memzone_reserve_aligned((const char *)name,
 728                                                    sizeof(uint32_t),
 729                                                    SOCKET_ID_ANY, 0,
 730                                                    ENIC_ALIGN);
 731         if (!wq->cqmsg_rz)
 732                 return -ENOMEM;
 733
 734         return err;
 735 }
 736
 737 int enic_disable(struct enic *enic)
 738 {
 739         unsigned int i;
 740         int err;
 741
 742         vnic_intr_mask(&enic->intr);
 743         (void)vnic_intr_masked(&enic->intr); /* flush write */
 744
 745         vnic_dev_disable(enic->vdev);
 746
 747         enic_clsf_destroy(enic);
 748
 749         if (!enic_is_sriov_vf(enic))
 750                 vnic_dev_del_addr(enic->vdev, enic->mac_addr);
 751
 752         for (i = 0; i < enic->wq_count; i++) {
 753                 err = vnic_wq_disable(&enic->wq[i]);
 754                 if (err)
 755                         return err;
 756         }
 757         for (i = 0; i < enic_vnic_rq_count(enic); i++) {
 758                 if (enic->rq[i].in_use) {
 759                         err = vnic_rq_disable(&enic->rq[i]);
 760                         if (err)
 761                                 return err;
 762                 }
 763         }
 764
 765         vnic_dev_set_reset_flag(enic->vdev, 1);
 766         vnic_dev_notify_unset(enic->vdev);
 767
 768         for (i = 0; i < enic->wq_count; i++)
 769                 vnic_wq_clean(&enic->wq[i], enic_free_wq_buf);
 770
 771         for (i = 0; i < enic_vnic_rq_count(enic); i++)
 772                 if (enic->rq[i].in_use)
 773                         vnic_rq_clean(&enic->rq[i], enic_free_rq_buf);
 774         for (i = 0; i < enic->cq_count; i++)
 775                 vnic_cq_clean(&enic->cq[i]);
 776         vnic_intr_clean(&enic->intr);
 777
 778         return 0;
 779 }
 780
 781 static int enic_dev_wait(struct vnic_dev *vdev,
 782         int (*start)(struct vnic_dev *, int),
 783         int (*finished)(struct vnic_dev *, int *),
 784         int arg)
 785 {
 786         int done;
 787         int err;
 788         int i;
 789
 790         err = start(vdev, arg);
 791         if (err)
 792                 return err;
 793
 794         /* Wait for func to complete...2 seconds max */
 795         for (i = 0; i < 2000; i++) {
 796                 err = finished(vdev, &done);
 797                 if (err)
 798                         return err;
 799                 if (done)
 800                         return 0;
 801                 usleep(1000);
 802         }
 803         return -ETIMEDOUT;
 804 }
 805
 806 static int enic_dev_open(struct enic *enic)
 807 {
 808         int err;
 809
 810         err = enic_dev_wait(enic->vdev, vnic_dev_open,
 811                 vnic_dev_open_done, 0);
 812         if (err)
 813                 dev_err(enic_get_dev(enic),
 814                         "vNIC device open failed, err %d\n", err);
 815
 816         return err;
 817 }
 818
 819 static int enic_set_rsskey(struct enic *enic)
 820 {
 821         dma_addr_t rss_key_buf_pa;
 822         union vnic_rss_key *rss_key_buf_va = NULL;
 823         static union vnic_rss_key rss_key = {
 824                 .key = {
 825                         [0] = {.b = {85, 67, 83, 97, 119, 101, 115, 111, 109, 101}},
 826                         [1] = {.b = {80, 65, 76, 79, 117, 110, 105, 113, 117, 101}},
 827                         [2] = {.b = {76, 73, 78, 85, 88, 114, 111, 99, 107, 115}},
 828                         [3] = {.b = {69, 78, 73, 67, 105, 115, 99, 111, 111, 108}},
 829                 }
 830         };
 831         int err;
 832         u8 name[NAME_MAX];
 833
 834         snprintf((char *)name, NAME_MAX, "rss_key-%s", enic->bdf_name);
 835         rss_key_buf_va = enic_alloc_consistent(enic, sizeof(union vnic_rss_key),
 836                 &rss_key_buf_pa, name);
 837         if (!rss_key_buf_va)
 838                 return -ENOMEM;
 839
 840         rte_memcpy(rss_key_buf_va, &rss_key, sizeof(union vnic_rss_key));
 841
 842         err = enic_set_rss_key(enic,
 843                 rss_key_buf_pa,
 844                 sizeof(union vnic_rss_key));
 845
 846         enic_free_consistent(enic->pdev, sizeof(union vnic_rss_key),
 847                 rss_key_buf_va, rss_key_buf_pa);
 848
 849         return err;
 850 }
 851
 852 static int enic_set_rsscpu(struct enic *enic, u8 rss_hash_bits)
 853 {
 854         dma_addr_t rss_cpu_buf_pa;
 855         union vnic_rss_cpu *rss_cpu_buf_va = NULL;
 856         int i;
 857         int err;
 858         u8 name[NAME_MAX];
 859
 860         snprintf((char *)name, NAME_MAX, "rss_cpu-%s", enic->bdf_name);
 861         rss_cpu_buf_va = enic_alloc_consistent(enic, sizeof(union vnic_rss_cpu),
 862                 &rss_cpu_buf_pa, name);
 863         if (!rss_cpu_buf_va)
 864                 return -ENOMEM;
 865
 866         for (i = 0; i < (1 << rss_hash_bits); i++)
 867                 (*rss_cpu_buf_va).cpu[i/4].b[i%4] = i % enic->rq_count;
 868
 869         err = enic_set_rss_cpu(enic,
 870                 rss_cpu_buf_pa,
 871                 sizeof(union vnic_rss_cpu));
 872
 873         enic_free_consistent(enic->pdev, sizeof(union vnic_rss_cpu),
 874                 rss_cpu_buf_va, rss_cpu_buf_pa);
 875
 876         return err;
 877 }
 878
 879 static int enic_set_niccfg(struct enic *enic, u8 rss_default_cpu,
 880         u8 rss_hash_type, u8 rss_hash_bits, u8 rss_base_cpu, u8 rss_enable)
 881 {
 882         const u8 tso_ipid_split_en = 0;
 883         int err;
 884
 885         /* Enable VLAN tag stripping */
 886
 887         err = enic_set_nic_cfg(enic,
 888                 rss_default_cpu, rss_hash_type,
 889                 rss_hash_bits, rss_base_cpu,
 890                 rss_enable, tso_ipid_split_en,
 891                 enic->ig_vlan_strip_en);
 892
 893         return err;
 894 }
 895
 896 int enic_set_rss_nic_cfg(struct enic *enic)
 897 {
 898         const u8 rss_default_cpu = 0;
 899         const u8 rss_hash_type = NIC_CFG_RSS_HASH_TYPE_IPV4 |
 900             NIC_CFG_RSS_HASH_TYPE_TCP_IPV4 |
 901             NIC_CFG_RSS_HASH_TYPE_IPV6 |
 902             NIC_CFG_RSS_HASH_TYPE_TCP_IPV6;
 903         const u8 rss_hash_bits = 7;
 904         const u8 rss_base_cpu = 0;
 905         u8 rss_enable = ENIC_SETTING(enic, RSS) && (enic->rq_count > 1);
 906
 907         if (rss_enable) {
 908                 if (!enic_set_rsskey(enic)) {
 909                         if (enic_set_rsscpu(enic, rss_hash_bits)) {
 910                                 rss_enable = 0;
 911                                 dev_warning(enic, "RSS disabled, "\
 912                                         "Failed to set RSS cpu indirection table.");
 913                         }
 914                 } else {
 915                         rss_enable = 0;
 916                         dev_warning(enic,
 917                                 "RSS disabled, Failed to set RSS key.\n");
 918                 }
 919         }
 920
 921         return enic_set_niccfg(enic, rss_default_cpu, rss_hash_type,
 922                 rss_hash_bits, rss_base_cpu, rss_enable);
 923 }
 924
 925 int enic_setup_finish(struct enic *enic)
 926 {
 927         int ret;
 928
 929         enic_init_soft_stats(enic);
 930
 931         ret = enic_set_rss_nic_cfg(enic);
 932         if (ret) {
 933                 dev_err(enic, "Failed to config nic, aborting.\n");
 934                 return -1;
 935         }
 936
 937         vnic_dev_add_addr(enic->vdev, enic->mac_addr);
 938
 939         /* Default conf */
 940         vnic_dev_packet_filter(enic->vdev,
 941                 1 /* directed  */,
 942                 1 /* multicast */,
 943                 1 /* broadcast */,
 944                 0 /* promisc   */,
 945                 1 /* allmulti  */);
 946
 947         enic->promisc = 0;
 948         enic->allmulti = 1;
 949
 950         return 0;
 951 }
 952
 953 void enic_add_packet_filter(struct enic *enic)
 954 {
 955         /* Args -> directed, multicast, broadcast, promisc, allmulti */
 956         vnic_dev_packet_filter(enic->vdev, 1, 1, 1,
 957                 enic->promisc, enic->allmulti);
 958 }
 959
 960 int enic_get_link_status(struct enic *enic)
 961 {
 962         return vnic_dev_link_status(enic->vdev);
 963 }
 964
 965 static void enic_dev_deinit(struct enic *enic)
 966 {
 967         struct rte_eth_dev *eth_dev = enic->rte_dev;
 968
 969         rte_free(eth_dev->data->mac_addrs);
 970 }
 971
 972
 973 int enic_set_vnic_res(struct enic *enic)
 974 {
 975         struct rte_eth_dev *eth_dev = enic->rte_dev;
 976         int rc = 0;
 977
 978         /* With Rx scatter support, two RQs are now used per RQ used by
 979          * the application.
 980          */
 981         if (enic->rq_count < (eth_dev->data->nb_rx_queues * 2)) {
 982                 dev_err(dev, "Not enough Receive queues. Requested:%u which uses %d RQs on VIC, Configured:%u\n",
 983                         eth_dev->data->nb_rx_queues,
 984                         eth_dev->data->nb_rx_queues * 2, enic->rq_count);
 985                 rc = -EINVAL;
 986         }
 987         if (enic->wq_count < eth_dev->data->nb_tx_queues) {
 988                 dev_err(dev, "Not enough Transmit queues. Requested:%u, Configured:%u\n",
 989                         eth_dev->data->nb_tx_queues, enic->wq_count);
 990                 rc = -EINVAL;
 991         }
 992
 993         if (enic->cq_count < (enic->rq_count + enic->wq_count)) {
 994                 dev_err(dev, "Not enough Completion queues. Required:%u, Configured:%u\n",
 995                         enic->rq_count + enic->wq_count, enic->cq_count);
 996                 rc = -EINVAL;
 997         }
 998
 999         if (rc == 0) {
1000                 enic->rq_count = eth_dev->data->nb_rx_queues;
1001                 enic->wq_count = eth_dev->data->nb_tx_queues;
1002                 enic->cq_count = enic->rq_count + enic->wq_count;
1003         }
1004
1005         return rc;
1006 }
1007
1008 static int enic_dev_init(struct enic *enic)
1009 {
1010         int err;
1011         struct rte_eth_dev *eth_dev = enic->rte_dev;
1012
1013         vnic_dev_intr_coal_timer_info_default(enic->vdev);
1014
1015         /* Get vNIC configuration
1016         */
1017         err = enic_get_vnic_config(enic);
1018         if (err) {
1019                 dev_err(dev, "Get vNIC configuration failed, aborting\n");
1020                 return err;
1021         }
1022
1023         eth_dev->data->mac_addrs = rte_zmalloc("enic_mac_addr", ETH_ALEN, 0);
1024         if (!eth_dev->data->mac_addrs) {
1025                 dev_err(enic, "mac addr storage alloc failed, aborting.\n");
1026                 return -1;
1027         }
1028         ether_addr_copy((struct ether_addr *) enic->mac_addr,
1029                 &eth_dev->data->mac_addrs[0]);
1030
1031
1032         /* Get available resource counts
1033         */
1034         enic_get_res_counts(enic);
1035
1036         vnic_dev_set_reset_flag(enic->vdev, 0);
1037
1038         return 0;
1039
1040 }
1041
1042 int enic_probe(struct enic *enic)
1043 {
1044         struct rte_pci_device *pdev = enic->pdev;
1045         int err = -1;
1046
1047         dev_debug(enic, " Initializing ENIC PMD version %s\n", DRV_VERSION);
1048
1049         enic->bar0.vaddr = (void *)pdev->mem_resource[0].addr;
1050         enic->bar0.len = pdev->mem_resource[0].len;
1051
1052         /* Register vNIC device */
1053         enic->vdev = vnic_dev_register(NULL, enic, enic->pdev, &enic->bar0, 1);
1054         if (!enic->vdev) {
1055                 dev_err(enic, "vNIC registration failed, aborting\n");
1056                 goto err_out;
1057         }
1058
1059         vnic_register_cbacks(enic->vdev,
1060                 enic_alloc_consistent,
1061                 enic_free_consistent);
1062
1063         /* Issue device open to get device in known state */
1064         err = enic_dev_open(enic);
1065         if (err) {
1066                 dev_err(enic, "vNIC dev open failed, aborting\n");
1067                 goto err_out_unregister;
1068         }
1069
1070         /* Set ingress vlan rewrite mode before vnic initialization */
1071         err = vnic_dev_set_ig_vlan_rewrite_mode(enic->vdev,
1072                 IG_VLAN_REWRITE_MODE_PASS_THRU);
1073         if (err) {
1074                 dev_err(enic,
1075                         "Failed to set ingress vlan rewrite mode, aborting.\n");
1076                 goto err_out_dev_close;
1077         }
1078
1079         /* Issue device init to initialize the vnic-to-switch link.
1080          * We'll start with carrier off and wait for link UP
1081          * notification later to turn on carrier.  We don't need
1082          * to wait here for the vnic-to-switch link initialization
1083          * to complete; link UP notification is the indication that
1084          * the process is complete.
1085          */
1086
1087         err = vnic_dev_init(enic->vdev, 0);
1088         if (err) {
1089                 dev_err(enic, "vNIC dev init failed, aborting\n");
1090                 goto err_out_dev_close;
1091         }
1092
1093         err = enic_dev_init(enic);
1094         if (err) {
1095                 dev_err(enic, "Device initialization failed, aborting\n");
1096                 goto err_out_dev_close;
1097         }
1098
1099         return 0;
1100
1101 err_out_dev_close:
1102         vnic_dev_close(enic->vdev);
1103 err_out_unregister:
1104         vnic_dev_unregister(enic->vdev);
1105 err_out:
1106         return err;
1107 }
1108
1109 void enic_remove(struct enic *enic)
1110 {
1111         enic_dev_deinit(enic);
1112         vnic_dev_close(enic->vdev);
1113         vnic_dev_unregister(enic->vdev);
1114 }