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 #ident "$Id$"
  35
  36 #include <stdio.h>
  37
  38 #include <sys/stat.h>
  39 #include <sys/mman.h>
  40 #include <fcntl.h>
  41 #include <libgen.h>
  42
  43 #include <rte_pci.h>
  44 #include <rte_memzone.h>
  45 #include <rte_malloc.h>
  46 #include <rte_mbuf.h>
  47 #include <rte_string_fns.h>
  48 #include <rte_ethdev.h>
  49
  50 #include "enic_compat.h"
  51 #include "enic.h"
  52 #include "wq_enet_desc.h"
  53 #include "rq_enet_desc.h"
  54 #include "cq_enet_desc.h"
  55 #include "vnic_enet.h"
  56 #include "vnic_dev.h"
  57 #include "vnic_wq.h"
  58 #include "vnic_rq.h"
  59 #include "vnic_cq.h"
  60 #include "vnic_intr.h"
  61 #include "vnic_nic.h"
  62
  63 static inline int enic_is_sriov_vf(struct enic *enic)
  64 {
  65         return enic->pdev->id.device_id == PCI_DEVICE_ID_CISCO_VIC_ENET_VF;
  66 }
  67
  68 static int is_zero_addr(uint8_t *addr)
  69 {
  70         return !(addr[0] |  addr[1] | addr[2] | addr[3] | addr[4] | addr[5]);
  71 }
  72
  73 static int is_mcast_addr(uint8_t *addr)
  74 {
  75         return addr[0] & 1;
  76 }
  77
  78 static int is_eth_addr_valid(uint8_t *addr)
  79 {
  80         return !is_mcast_addr(addr) && !is_zero_addr(addr);
  81 }
  82
  83 static inline struct rte_mbuf *
  84 enic_rxmbuf_alloc(struct rte_mempool *mp)
  85 {
  86         struct rte_mbuf *m;
  87
  88         m = __rte_mbuf_raw_alloc(mp);
  89         __rte_mbuf_sanity_check_raw(m, 0);
  90         return m;
  91 }
  92
  93 void enic_set_hdr_split_size(struct enic *enic, u16 split_hdr_size)
  94 {
  95         vnic_set_hdr_split_size(enic->vdev, split_hdr_size);
  96 }
  97
  98 static void enic_free_wq_buf(__rte_unused struct vnic_wq *wq, struct vnic_wq_buf *buf)
  99 {
 100         struct rte_mbuf *mbuf = (struct rte_mbuf *)buf->os_buf;
 101
 102         rte_mempool_put(mbuf->pool, mbuf);
 103         buf->os_buf = NULL;
 104 }
 105
 106 static void enic_wq_free_buf(struct vnic_wq *wq,
 107         __rte_unused struct cq_desc *cq_desc,
 108         struct vnic_wq_buf *buf,
 109         __rte_unused void *opaque)
 110 {
 111         enic_free_wq_buf(wq, buf);
 112 }
 113
 114 static int enic_wq_service(struct vnic_dev *vdev, struct cq_desc *cq_desc,
 115         __rte_unused u8 type, u16 q_number, u16 completed_index, void *opaque)
 116 {
 117         struct enic *enic = vnic_dev_priv(vdev);
 118
 119         vnic_wq_service(&enic->wq[q_number], cq_desc,
 120                 completed_index, enic_wq_free_buf,
 121                 opaque);
 122
 123         return 0;
 124 }
 125
 126 static void enic_log_q_error(struct enic *enic)
 127 {
 128         unsigned int i;
 129         u32 error_status;
 130
 131         for (i = 0; i < enic->wq_count; i++) {
 132                 error_status = vnic_wq_error_status(&enic->wq[i]);
 133                 if (error_status)
 134                         dev_err(enic, "WQ[%d] error_status %d\n", i,
 135                                 error_status);
 136         }
 137
 138         for (i = 0; i < enic->rq_count; i++) {
 139                 error_status = vnic_rq_error_status(&enic->rq[i]);
 140                 if (error_status)
 141                         dev_err(enic, "RQ[%d] error_status %d\n", i,
 142                                 error_status);
 143         }
 144 }
 145
 146 unsigned int enic_cleanup_wq(struct enic *enic, struct vnic_wq *wq)
 147 {
 148         unsigned int cq = enic_cq_wq(enic, wq->index);
 149
 150         /* Return the work done */
 151         return vnic_cq_service(&enic->cq[cq],
 152                 -1 /*wq_work_to_do*/, enic_wq_service, NULL);
 153 }
 154
 155
 156 int enic_send_pkt(struct enic *enic, struct vnic_wq *wq,
 157         struct rte_mbuf *tx_pkt, unsigned short len,
 158         uint8_t sop, uint8_t eop,
 159         uint16_t ol_flags, uint16_t vlan_tag)
 160 {
 161         struct wq_enet_desc *desc = vnic_wq_next_desc(wq);
 162         uint16_t mss = 0;
 163         uint8_t cq_entry = eop;
 164         uint8_t vlan_tag_insert = 0;
 165         uint64_t bus_addr = (dma_addr_t)
 166             (tx_pkt->buf_physaddr + RTE_PKTMBUF_HEADROOM);
 167
 168         if (sop) {
 169                 if (ol_flags & PKT_TX_VLAN_PKT)
 170                         vlan_tag_insert = 1;
 171
 172                 if (enic->hw_ip_checksum) {
 173                         if (ol_flags & PKT_TX_IP_CKSUM)
 174                                 mss |= ENIC_CALC_IP_CKSUM;
 175
 176                         if (ol_flags & PKT_TX_TCP_UDP_CKSUM)
 177                                 mss |= ENIC_CALC_TCP_UDP_CKSUM;
 178                 }
 179         }
 180
 181         wq_enet_desc_enc(desc,
 182                 bus_addr,
 183                 len,
 184                 mss,
 185                 0 /* header_length */,
 186                 0 /* offload_mode WQ_ENET_OFFLOAD_MODE_CSUM */,
 187                 eop,
 188                 cq_entry,
 189                 0 /* fcoe_encap */,
 190                 vlan_tag_insert,
 191                 vlan_tag,
 192                 0 /* loopback */);
 193
 194         vnic_wq_post(wq, (void *)tx_pkt, bus_addr, len,
 195                 sop, eop,
 196                 1 /*desc_skip_cnt*/,
 197                 cq_entry,
 198                 0 /*compressed send*/,
 199                 0 /*wrid*/);
 200
 201         return 0;
 202 }
 203
 204 void enic_dev_stats_clear(struct enic *enic)
 205 {
 206         if (vnic_dev_stats_clear(enic->vdev))
 207                 dev_err(enic, "Error in clearing stats\n");
 208 }
 209
 210 void enic_dev_stats_get(struct enic *enic, struct rte_eth_stats *r_stats)
 211 {
 212         struct vnic_stats *stats;
 213
 214         if (vnic_dev_stats_dump(enic->vdev, &stats)) {
 215                 dev_err(enic, "Error in getting stats\n");
 216                 return;
 217         }
 218
 219         r_stats->ipackets = stats->rx.rx_frames_ok;
 220         r_stats->opackets = stats->tx.tx_frames_ok;
 221
 222         r_stats->ibytes = stats->rx.rx_bytes_ok;
 223         r_stats->obytes = stats->tx.tx_bytes_ok;
 224
 225         r_stats->ierrors = stats->rx.rx_errors;
 226         r_stats->oerrors = stats->tx.tx_errors;
 227
 228         r_stats->imcasts = stats->rx.rx_multicast_frames_ok;
 229         r_stats->rx_nombuf = stats->rx.rx_no_bufs;
 230 }
 231
 232 void enic_del_mac_address(struct enic *enic)
 233 {
 234         if (vnic_dev_del_addr(enic->vdev, enic->mac_addr))
 235                 dev_err(enic, "del mac addr failed\n");
 236 }
 237
 238 void enic_set_mac_address(struct enic *enic, uint8_t *mac_addr)
 239 {
 240         int err;
 241
 242         if (!is_eth_addr_valid(mac_addr)) {
 243                 dev_err(enic, "invalid mac address\n");
 244                 return;
 245         }
 246
 247         err = vnic_dev_del_addr(enic->vdev, mac_addr);
 248         if (err) {
 249                 dev_err(enic, "del mac addr failed\n");
 250                 return;
 251         }
 252
 253         ether_addr_copy((struct ether_addr *)mac_addr,
 254                 (struct ether_addr *)enic->mac_addr);
 255
 256         err = vnic_dev_add_addr(enic->vdev, mac_addr);
 257         if (err) {
 258                 dev_err(enic, "add mac addr failed\n");
 259                 return;
 260         }
 261 }
 262
 263 static void
 264 enic_free_rq_buf(__rte_unused struct vnic_rq *rq, struct vnic_rq_buf *buf)
 265 {
 266         if (!buf->os_buf)
 267                 return;
 268
 269         rte_pktmbuf_free((struct rte_mbuf *)buf->os_buf);
 270         buf->os_buf = NULL;
 271 }
 272
 273 void enic_init_vnic_resources(struct enic *enic)
 274 {
 275         unsigned int error_interrupt_enable = 1;
 276         unsigned int error_interrupt_offset = 0;
 277         unsigned int index = 0;
 278
 279         for (index = 0; index < enic->rq_count; index++) {
 280                 vnic_rq_init(&enic->rq[index],
 281                         enic_cq_rq(enic, index),
 282                         error_interrupt_enable,
 283                         error_interrupt_offset);
 284         }
 285
 286         for (index = 0; index < enic->wq_count; index++) {
 287                 vnic_wq_init(&enic->wq[index],
 288                         enic_cq_wq(enic, index),
 289                         error_interrupt_enable,
 290                         error_interrupt_offset);
 291         }
 292
 293         vnic_dev_stats_clear(enic->vdev);
 294
 295         for (index = 0; index < enic->cq_count; index++) {
 296                 vnic_cq_init(&enic->cq[index],
 297                         0 /* flow_control_enable */,
 298                         1 /* color_enable */,
 299                         0 /* cq_head */,
 300                         0 /* cq_tail */,
 301                         1 /* cq_tail_color */,
 302                         0 /* interrupt_enable */,
 303                         1 /* cq_entry_enable */,
 304                         0 /* cq_message_enable */,
 305                         0 /* interrupt offset */,
 306                         0 /* cq_message_addr */);
 307         }
 308
 309         vnic_intr_init(&enic->intr,
 310                 enic->config.intr_timer_usec,
 311                 enic->config.intr_timer_type,
 312                 /*mask_on_assertion*/1);
 313 }
 314
 315
 316 static int enic_rq_alloc_buf(struct vnic_rq *rq)
 317 {
 318         struct enic *enic = vnic_dev_priv(rq->vdev);
 319         dma_addr_t dma_addr;
 320         struct rq_enet_desc *desc = vnic_rq_next_desc(rq);
 321         uint8_t type = RQ_ENET_TYPE_ONLY_SOP;
 322         u16 split_hdr_size = vnic_get_hdr_split_size(enic->vdev);
 323         struct rte_mbuf *mbuf = enic_rxmbuf_alloc(rq->mp);
 324         struct rte_mbuf *hdr_mbuf = NULL;
 325
 326         if (!mbuf) {
 327                 dev_err(enic, "mbuf alloc in enic_rq_alloc_buf failed\n");
 328                 return -1;
 329         }
 330
 331         if (unlikely(split_hdr_size)) {
 332                 if (vnic_rq_desc_avail(rq) < 2) {
 333                         rte_mempool_put(mbuf->pool, mbuf);
 334                         return -1;
 335                 }
 336                 hdr_mbuf = enic_rxmbuf_alloc(rq->mp);
 337                 if (!hdr_mbuf) {
 338                         rte_mempool_put(mbuf->pool, mbuf);
 339                         dev_err(enic,
 340                                 "hdr_mbuf alloc in enic_rq_alloc_buf failed\n");
 341                         return -1;
 342                 }
 343
 344                 hdr_mbuf->data_off = RTE_PKTMBUF_HEADROOM;
 345
 346                 hdr_mbuf->nb_segs = 2;
 347                 hdr_mbuf->port = enic->port_id;
 348                 hdr_mbuf->next = mbuf;
 349
 350                 dma_addr = (dma_addr_t)
 351                     (hdr_mbuf->buf_physaddr + hdr_mbuf->data_off);
 352
 353                 rq_enet_desc_enc(desc, dma_addr, type, split_hdr_size);
 354
 355                 vnic_rq_post(rq, (void *)hdr_mbuf, 0 /*os_buf_index*/, dma_addr,
 356                         (unsigned int)split_hdr_size, 0 /*wrid*/);
 357
 358                 desc = vnic_rq_next_desc(rq);
 359                 type = RQ_ENET_TYPE_NOT_SOP;
 360         } else {
 361                 mbuf->nb_segs = 1;
 362                 mbuf->port = enic->port_id;
 363         }
 364
 365         mbuf->data_off = RTE_PKTMBUF_HEADROOM;
 366         mbuf->next = NULL;
 367
 368         dma_addr = (dma_addr_t)
 369             (mbuf->buf_physaddr + mbuf->data_off);
 370
 371         rq_enet_desc_enc(desc, dma_addr, type, mbuf->buf_len);
 372
 373         vnic_rq_post(rq, (void *)mbuf, 0 /*os_buf_index*/, dma_addr,
 374                 (unsigned int)mbuf->buf_len, 0 /*wrid*/);
 375
 376         return 0;
 377 }
 378
 379 static int enic_rq_indicate_buf(struct vnic_rq *rq,
 380         struct cq_desc *cq_desc, struct vnic_rq_buf *buf,
 381         int skipped, void *opaque)
 382 {
 383         struct enic *enic = vnic_dev_priv(rq->vdev);
 384         struct rte_mbuf **rx_pkt_bucket = (struct rte_mbuf **)opaque;
 385         struct rte_mbuf *rx_pkt = NULL;
 386         struct rte_mbuf *hdr_rx_pkt = NULL;
 387
 388         u8 type, color, eop, sop, ingress_port, vlan_stripped;
 389         u8 fcoe, fcoe_sof, fcoe_fc_crc_ok, fcoe_enc_error, fcoe_eof;
 390         u8 tcp_udp_csum_ok, udp, tcp, ipv4_csum_ok;
 391         u8 ipv6, ipv4, ipv4_fragment, fcs_ok, rss_type, csum_not_calc;
 392         u8 packet_error;
 393         u16 q_number, completed_index, bytes_written, vlan_tci, checksum;
 394         u32 rss_hash;
 395
 396         cq_enet_rq_desc_dec((struct cq_enet_rq_desc *)cq_desc,
 397                 &type, &color, &q_number, &completed_index,
 398                 &ingress_port, &fcoe, &eop, &sop, &rss_type,
 399                 &csum_not_calc, &rss_hash, &bytes_written,
 400                 &packet_error, &vlan_stripped, &vlan_tci, &checksum,
 401                 &fcoe_sof, &fcoe_fc_crc_ok, &fcoe_enc_error,
 402                 &fcoe_eof, &tcp_udp_csum_ok, &udp, &tcp,
 403                 &ipv4_csum_ok, &ipv6, &ipv4, &ipv4_fragment,
 404                 &fcs_ok);
 405
 406         rx_pkt = (struct rte_mbuf *)buf->os_buf;
 407         buf->os_buf = NULL;
 408
 409         if (unlikely(packet_error)) {
 410                 dev_err(enic, "packet error\n");
 411                 rx_pkt->data_len = 0;
 412                 return 0;
 413         }
 414
 415         if (unlikely(skipped)) {
 416                 rx_pkt->data_len = 0;
 417                 return 0;
 418         }
 419
 420         if (likely(!vnic_get_hdr_split_size(enic->vdev))) {
 421                 /* No header split configured */
 422                 *rx_pkt_bucket = rx_pkt;
 423                 rx_pkt->pkt_len = bytes_written;
 424
 425                 if (ipv4) {
 426 #ifdef RTE_NEXT_ABI
 427                         rx_pkt->packet_type = RTE_PTYPE_L3_IPV4;
 428 #else
 429                         rx_pkt->ol_flags |= PKT_RX_IPV4_HDR;
 430 #endif
 431                         if (!csum_not_calc) {
 432                                 if (unlikely(!ipv4_csum_ok))
 433                                         rx_pkt->ol_flags |= PKT_RX_IP_CKSUM_BAD;
 434
 435                                 if ((tcp || udp) && (!tcp_udp_csum_ok))
 436                                         rx_pkt->ol_flags |= PKT_RX_L4_CKSUM_BAD;
 437                         }
 438                 } else if (ipv6)
 439 #ifdef RTE_NEXT_ABI
 440                         rx_pkt->packet_type = RTE_PTYPE_L3_IPV6;
 441 #else
 442                         rx_pkt->ol_flags |= PKT_RX_IPV6_HDR;
 443 #endif
 444         } else {
 445                 /* Header split */
 446                 if (sop && !eop) {
 447                         /* This piece is header */
 448                         *rx_pkt_bucket = rx_pkt;
 449                         rx_pkt->pkt_len = bytes_written;
 450                 } else {
 451                         if (sop && eop) {
 452                                 /* The packet is smaller than split_hdr_size */
 453                                 *rx_pkt_bucket = rx_pkt;
 454                                 rx_pkt->pkt_len = bytes_written;
 455                                 if (ipv4) {
 456 #ifdef RTE_NEXT_ABI
 457                                         rx_pkt->packet_type = RTE_PTYPE_L3_IPV4;
 458 #else
 459                                         rx_pkt->ol_flags |= PKT_RX_IPV4_HDR;
 460 #endif
 461                                         if (!csum_not_calc) {
 462                                                 if (unlikely(!ipv4_csum_ok))
 463                                                         rx_pkt->ol_flags |=
 464                                                             PKT_RX_IP_CKSUM_BAD;
 465
 466                                                 if ((tcp || udp) &&
 467                                                     (!tcp_udp_csum_ok))
 468                                                         rx_pkt->ol_flags |=
 469                                                             PKT_RX_L4_CKSUM_BAD;
 470                                         }
 471                                 } else if (ipv6)
 472 #ifdef RTE_NEXT_ABI
 473                                         rx_pkt->packet_type = RTE_PTYPE_L3_IPV6;
 474 #else
 475                                         rx_pkt->ol_flags |= PKT_RX_IPV6_HDR;
 476 #endif
 477                         } else {
 478                                 /* Payload */
 479                                 hdr_rx_pkt = *rx_pkt_bucket;
 480                                 hdr_rx_pkt->pkt_len += bytes_written;
 481                                 if (ipv4) {
 482 #ifdef RTE_NEXT_ABI
 483                                         hdr_rx_pkt->packet_type =
 484                                                 RTE_PTYPE_L3_IPV4;
 485 #else
 486                                         hdr_rx_pkt->ol_flags |= PKT_RX_IPV4_HDR;
 487 #endif
 488                                         if (!csum_not_calc) {
 489                                                 if (unlikely(!ipv4_csum_ok))
 490                                                         hdr_rx_pkt->ol_flags |=
 491                                                             PKT_RX_IP_CKSUM_BAD;
 492
 493                                                 if ((tcp || udp) &&
 494                                                     (!tcp_udp_csum_ok))
 495                                                         hdr_rx_pkt->ol_flags |=
 496                                                             PKT_RX_L4_CKSUM_BAD;
 497                                         }
 498                                 } else if (ipv6)
 499 #ifdef RTE_NEXT_ABI
 500                                         hdr_rx_pkt->packet_type =
 501                                                 RTE_PTYPE_L3_IPV6;
 502 #else
 503                                         hdr_rx_pkt->ol_flags |= PKT_RX_IPV6_HDR;
 504 #endif
 505
 506                         }
 507                 }
 508         }
 509
 510         rx_pkt->data_len = bytes_written;
 511
 512         if (rss_hash) {
 513                 rx_pkt->ol_flags |= PKT_RX_RSS_HASH;
 514                 rx_pkt->hash.rss = rss_hash;
 515         }
 516
 517         if (vlan_tci) {
 518                 rx_pkt->ol_flags |= PKT_RX_VLAN_PKT;
 519                 rx_pkt->vlan_tci = vlan_tci;
 520         }
 521
 522         return eop;
 523 }
 524
 525 static int enic_rq_service(struct vnic_dev *vdev, struct cq_desc *cq_desc,
 526         __rte_unused u8 type, u16 q_number, u16 completed_index, void *opaque)
 527 {
 528         struct enic *enic = vnic_dev_priv(vdev);
 529
 530         return vnic_rq_service(&enic->rq[q_number], cq_desc,
 531                 completed_index, VNIC_RQ_RETURN_DESC,
 532                 enic_rq_indicate_buf, opaque);
 533
 534 }
 535
 536 int enic_poll(struct vnic_rq *rq, struct rte_mbuf **rx_pkts,
 537         unsigned int budget, unsigned int *work_done)
 538 {
 539         struct enic *enic = vnic_dev_priv(rq->vdev);
 540         unsigned int cq = enic_cq_rq(enic, rq->index);
 541         int err = 0;
 542
 543         *work_done = vnic_cq_service(&enic->cq[cq],
 544                 budget, enic_rq_service, (void *)rx_pkts);
 545
 546         if (*work_done) {
 547                 vnic_rq_fill(rq, enic_rq_alloc_buf);
 548
 549                 /* Need at least one buffer on ring to get going */
 550                 if (vnic_rq_desc_used(rq) == 0) {
 551                         dev_err(enic, "Unable to alloc receive buffers\n");
 552                         err = -1;
 553                 }
 554         }
 555         return err;
 556 }
 557
 558 static void *
 559 enic_alloc_consistent(__rte_unused void *priv, size_t size,
 560         dma_addr_t *dma_handle, u8 *name)
 561 {
 562         void *vaddr;
 563         const struct rte_memzone *rz;
 564         *dma_handle = 0;
 565
 566         rz = rte_memzone_reserve_aligned((const char *)name,
 567                 size, 0, 0, ENIC_ALIGN);
 568         if (!rz) {
 569                 pr_err("%s : Failed to allocate memory requested for %s",
 570                         __func__, name);
 571                 return NULL;
 572         }
 573
 574         vaddr = rz->addr;
 575         *dma_handle = (dma_addr_t)rz->phys_addr;
 576
 577         return vaddr;
 578 }
 579
 580 static void
 581 enic_free_consistent(__rte_unused struct rte_pci_device *hwdev,
 582         __rte_unused size_t size,
 583         __rte_unused void *vaddr,
 584         __rte_unused dma_addr_t dma_handle)
 585 {
 586         /* Nothing to be done */
 587 }
 588
 589 static void
 590 enic_intr_handler(__rte_unused struct rte_intr_handle *handle,
 591         void *arg)
 592 {
 593         struct enic *enic = pmd_priv((struct rte_eth_dev *)arg);
 594
 595         vnic_intr_return_all_credits(&enic->intr);
 596
 597         enic_log_q_error(enic);
 598 }
 599
 600 int enic_enable(struct enic *enic)
 601 {
 602         unsigned int index;
 603         struct rte_eth_dev *eth_dev = enic->rte_dev;
 604
 605         eth_dev->data->dev_link.link_speed = vnic_dev_port_speed(enic->vdev);
 606         eth_dev->data->dev_link.link_duplex = ETH_LINK_FULL_DUPLEX;
 607         vnic_dev_notify_set(enic->vdev, -1); /* No Intr for notify */
 608
 609         if (enic_clsf_init(enic))
 610                 dev_warning(enic, "Init of hash table for clsf failed."\
 611                         "Flow director feature will not work\n");
 612
 613         /* Fill RQ bufs */
 614         for (index = 0; index < enic->rq_count; index++) {
 615                 vnic_rq_fill(&enic->rq[index], enic_rq_alloc_buf);
 616
 617                 /* Need at least one buffer on ring to get going
 618                 */
 619                 if (vnic_rq_desc_used(&enic->rq[index]) == 0) {
 620                         dev_err(enic, "Unable to alloc receive buffers\n");
 621                         return -1;
 622                 }
 623         }
 624
 625         for (index = 0; index < enic->wq_count; index++)
 626                 vnic_wq_enable(&enic->wq[index]);
 627         for (index = 0; index < enic->rq_count; index++)
 628                 vnic_rq_enable(&enic->rq[index]);
 629
 630         vnic_dev_enable_wait(enic->vdev);
 631
 632         /* Register and enable error interrupt */
 633         rte_intr_callback_register(&(enic->pdev->intr_handle),
 634                 enic_intr_handler, (void *)enic->rte_dev);
 635
 636         rte_intr_enable(&(enic->pdev->intr_handle));
 637         vnic_intr_unmask(&enic->intr);
 638
 639         return 0;
 640 }
 641
 642 int enic_alloc_intr_resources(struct enic *enic)
 643 {
 644         int err;
 645
 646         dev_info(enic, "vNIC resources used:  "\
 647                 "wq %d rq %d cq %d intr %d\n",
 648                 enic->wq_count, enic->rq_count,
 649                 enic->cq_count, enic->intr_count);
 650
 651         err = vnic_intr_alloc(enic->vdev, &enic->intr, 0);
 652         if (err)
 653                 enic_free_vnic_resources(enic);
 654
 655         return err;
 656 }
 657
 658 void enic_free_rq(void *rxq)
 659 {
 660         struct vnic_rq *rq = (struct vnic_rq *)rxq;
 661         struct enic *enic = vnic_dev_priv(rq->vdev);
 662
 663         vnic_rq_free(rq);
 664         vnic_cq_free(&enic->cq[rq->index]);
 665 }
 666
 667 void enic_start_wq(struct enic *enic, uint16_t queue_idx)
 668 {
 669         vnic_wq_enable(&enic->wq[queue_idx]);
 670 }
 671
 672 int enic_stop_wq(struct enic *enic, uint16_t queue_idx)
 673 {
 674         return vnic_wq_disable(&enic->wq[queue_idx]);
 675 }
 676
 677 void enic_start_rq(struct enic *enic, uint16_t queue_idx)
 678 {
 679         vnic_rq_enable(&enic->rq[queue_idx]);
 680 }
 681
 682 int enic_stop_rq(struct enic *enic, uint16_t queue_idx)
 683 {
 684         return vnic_rq_disable(&enic->rq[queue_idx]);
 685 }
 686
 687 int enic_alloc_rq(struct enic *enic, uint16_t queue_idx,
 688         unsigned int socket_id, struct rte_mempool *mp,
 689         uint16_t nb_desc)
 690 {
 691         int err;
 692         struct vnic_rq *rq = &enic->rq[queue_idx];
 693
 694         rq->socket_id = socket_id;
 695         rq->mp = mp;
 696
 697         if (nb_desc) {
 698                 if (nb_desc > enic->config.rq_desc_count) {
 699                         dev_warning(enic,
 700                                 "RQ %d - number of rx desc in cmd line (%d)"\
 701                                 "is greater than that in the UCSM/CIMC adapter"\
 702                                 "policy.  Applying the value in the adapter "\
 703                                 "policy (%d).\n",
 704                                 queue_idx, nb_desc, enic->config.rq_desc_count);
 705                 } else if (nb_desc != enic->config.rq_desc_count) {
 706                         enic->config.rq_desc_count = nb_desc;
 707                         dev_info(enic,
 708                                 "RX Queues - effective number of descs:%d\n",
 709                                 nb_desc);
 710                 }
 711         }
 712
 713         /* Allocate queue resources */
 714         err = vnic_rq_alloc(enic->vdev, &enic->rq[queue_idx], queue_idx,
 715                 enic->config.rq_desc_count,
 716                 sizeof(struct rq_enet_desc));
 717         if (err) {
 718                 dev_err(enic, "error in allocation of rq\n");
 719                 return err;
 720         }
 721
 722         err = vnic_cq_alloc(enic->vdev, &enic->cq[queue_idx], queue_idx,
 723                 socket_id, enic->config.rq_desc_count,
 724                 sizeof(struct cq_enet_rq_desc));
 725         if (err) {
 726                 vnic_rq_free(rq);
 727                 dev_err(enic, "error in allocation of cq for rq\n");
 728         }
 729
 730         return err;
 731 }
 732
 733 void enic_free_wq(void *txq)
 734 {
 735         struct vnic_wq *wq = (struct vnic_wq *)txq;
 736         struct enic *enic = vnic_dev_priv(wq->vdev);
 737
 738         vnic_wq_free(wq);
 739         vnic_cq_free(&enic->cq[enic->rq_count + wq->index]);
 740 }
 741
 742 int enic_alloc_wq(struct enic *enic, uint16_t queue_idx,
 743         unsigned int socket_id, uint16_t nb_desc)
 744 {
 745         int err;
 746         struct vnic_wq *wq = &enic->wq[queue_idx];
 747         unsigned int cq_index = enic_cq_wq(enic, queue_idx);
 748
 749         wq->socket_id = socket_id;
 750         if (nb_desc) {
 751                 if (nb_desc > enic->config.wq_desc_count) {
 752                         dev_warning(enic,
 753                                 "WQ %d - number of tx desc in cmd line (%d)"\
 754                                 "is greater than that in the UCSM/CIMC adapter"\
 755                                 "policy.  Applying the value in the adapter "\
 756                                 "policy (%d)\n",
 757                                 queue_idx, nb_desc, enic->config.wq_desc_count);
 758                 } else if (nb_desc != enic->config.wq_desc_count) {
 759                         enic->config.wq_desc_count = nb_desc;
 760                         dev_info(enic,
 761                                 "TX Queues - effective number of descs:%d\n",
 762                                 nb_desc);
 763                 }
 764         }
 765
 766         /* Allocate queue resources */
 767         err = vnic_wq_alloc(enic->vdev, &enic->wq[queue_idx], queue_idx,
 768                 enic->config.wq_desc_count,
 769                 sizeof(struct wq_enet_desc));
 770         if (err) {
 771                 dev_err(enic, "error in allocation of wq\n");
 772                 return err;
 773         }
 774
 775         err = vnic_cq_alloc(enic->vdev, &enic->cq[cq_index], cq_index,
 776                 socket_id, enic->config.wq_desc_count,
 777                 sizeof(struct cq_enet_wq_desc));
 778         if (err) {
 779                 vnic_wq_free(wq);
 780                 dev_err(enic, "error in allocation of cq for wq\n");
 781         }
 782
 783         return err;
 784 }
 785
 786 int enic_disable(struct enic *enic)
 787 {
 788         unsigned int i;
 789         int err;
 790
 791         vnic_intr_mask(&enic->intr);
 792         (void)vnic_intr_masked(&enic->intr); /* flush write */
 793
 794         vnic_dev_disable(enic->vdev);
 795
 796         enic_clsf_destroy(enic);
 797
 798         if (!enic_is_sriov_vf(enic))
 799                 vnic_dev_del_addr(enic->vdev, enic->mac_addr);
 800
 801         for (i = 0; i < enic->wq_count; i++) {
 802                 err = vnic_wq_disable(&enic->wq[i]);
 803                 if (err)
 804                         return err;
 805         }
 806         for (i = 0; i < enic->rq_count; i++) {
 807                 err = vnic_rq_disable(&enic->rq[i]);
 808                 if (err)
 809                         return err;
 810         }
 811
 812         vnic_dev_set_reset_flag(enic->vdev, 1);
 813         vnic_dev_notify_unset(enic->vdev);
 814
 815         for (i = 0; i < enic->wq_count; i++)
 816                 vnic_wq_clean(&enic->wq[i], enic_free_wq_buf);
 817         for (i = 0; i < enic->rq_count; i++)
 818                 vnic_rq_clean(&enic->rq[i], enic_free_rq_buf);
 819         for (i = 0; i < enic->cq_count; i++)
 820                 vnic_cq_clean(&enic->cq[i]);
 821         vnic_intr_clean(&enic->intr);
 822
 823         return 0;
 824 }
 825
 826 static int enic_dev_wait(struct vnic_dev *vdev,
 827         int (*start)(struct vnic_dev *, int),
 828         int (*finished)(struct vnic_dev *, int *),
 829         int arg)
 830 {
 831         int done;
 832         int err;
 833         int i;
 834
 835         err = start(vdev, arg);
 836         if (err)
 837                 return err;
 838
 839         /* Wait for func to complete...2 seconds max */
 840         for (i = 0; i < 2000; i++) {
 841                 err = finished(vdev, &done);
 842                 if (err)
 843                         return err;
 844                 if (done)
 845                         return 0;
 846                 usleep(1000);
 847         }
 848         return -ETIMEDOUT;
 849 }
 850
 851 static int enic_dev_open(struct enic *enic)
 852 {
 853         int err;
 854
 855         err = enic_dev_wait(enic->vdev, vnic_dev_open,
 856                 vnic_dev_open_done, 0);
 857         if (err)
 858                 dev_err(enic_get_dev(enic),
 859                         "vNIC device open failed, err %d\n", err);
 860
 861         return err;
 862 }
 863
 864 static int enic_set_rsskey(struct enic *enic)
 865 {
 866         dma_addr_t rss_key_buf_pa;
 867         union vnic_rss_key *rss_key_buf_va = NULL;
 868         static union vnic_rss_key rss_key = {
 869                 .key = {
 870                         [0] = {.b = {85, 67, 83, 97, 119, 101, 115, 111, 109, 101}},
 871                         [1] = {.b = {80, 65, 76, 79, 117, 110, 105, 113, 117, 101}},
 872                         [2] = {.b = {76, 73, 78, 85, 88, 114, 111, 99, 107, 115}},
 873                         [3] = {.b = {69, 78, 73, 67, 105, 115, 99, 111, 111, 108}},
 874                 }
 875         };
 876         int err;
 877         u8 name[NAME_MAX];
 878
 879         snprintf((char *)name, NAME_MAX, "rss_key-%s", enic->bdf_name);
 880         rss_key_buf_va = enic_alloc_consistent(enic, sizeof(union vnic_rss_key),
 881                 &rss_key_buf_pa, name);
 882         if (!rss_key_buf_va)
 883                 return -ENOMEM;
 884
 885         rte_memcpy(rss_key_buf_va, &rss_key, sizeof(union vnic_rss_key));
 886
 887         err = enic_set_rss_key(enic,
 888                 rss_key_buf_pa,
 889                 sizeof(union vnic_rss_key));
 890
 891         enic_free_consistent(enic->pdev, sizeof(union vnic_rss_key),
 892                 rss_key_buf_va, rss_key_buf_pa);
 893
 894         return err;
 895 }
 896
 897 static int enic_set_rsscpu(struct enic *enic, u8 rss_hash_bits)
 898 {
 899         dma_addr_t rss_cpu_buf_pa;
 900         union vnic_rss_cpu *rss_cpu_buf_va = NULL;
 901         int i;
 902         int err;
 903         u8 name[NAME_MAX];
 904
 905         snprintf((char *)name, NAME_MAX, "rss_cpu-%s", enic->bdf_name);
 906         rss_cpu_buf_va = enic_alloc_consistent(enic, sizeof(union vnic_rss_cpu),
 907                 &rss_cpu_buf_pa, name);
 908         if (!rss_cpu_buf_va)
 909                 return -ENOMEM;
 910
 911         for (i = 0; i < (1 << rss_hash_bits); i++)
 912                 (*rss_cpu_buf_va).cpu[i/4].b[i%4] = i % enic->rq_count;
 913
 914         err = enic_set_rss_cpu(enic,
 915                 rss_cpu_buf_pa,
 916                 sizeof(union vnic_rss_cpu));
 917
 918         enic_free_consistent(enic->pdev, sizeof(union vnic_rss_cpu),
 919                 rss_cpu_buf_va, rss_cpu_buf_pa);
 920
 921         return err;
 922 }
 923
 924 static int enic_set_niccfg(struct enic *enic, u8 rss_default_cpu,
 925         u8 rss_hash_type, u8 rss_hash_bits, u8 rss_base_cpu, u8 rss_enable)
 926 {
 927         const u8 tso_ipid_split_en = 0;
 928         int err;
 929
 930         /* Enable VLAN tag stripping */
 931
 932         err = enic_set_nic_cfg(enic,
 933                 rss_default_cpu, rss_hash_type,
 934                 rss_hash_bits, rss_base_cpu,
 935                 rss_enable, tso_ipid_split_en,
 936                 enic->ig_vlan_strip_en);
 937
 938         return err;
 939 }
 940
 941 int enic_set_rss_nic_cfg(struct enic *enic)
 942 {
 943         const u8 rss_default_cpu = 0;
 944         const u8 rss_hash_type = NIC_CFG_RSS_HASH_TYPE_IPV4 |
 945             NIC_CFG_RSS_HASH_TYPE_TCP_IPV4 |
 946             NIC_CFG_RSS_HASH_TYPE_IPV6 |
 947             NIC_CFG_RSS_HASH_TYPE_TCP_IPV6;
 948         const u8 rss_hash_bits = 7;
 949         const u8 rss_base_cpu = 0;
 950         u8 rss_enable = ENIC_SETTING(enic, RSS) && (enic->rq_count > 1);
 951
 952         if (rss_enable) {
 953                 if (!enic_set_rsskey(enic)) {
 954                         if (enic_set_rsscpu(enic, rss_hash_bits)) {
 955                                 rss_enable = 0;
 956                                 dev_warning(enic, "RSS disabled, "\
 957                                         "Failed to set RSS cpu indirection table.");
 958                         }
 959                 } else {
 960                         rss_enable = 0;
 961                         dev_warning(enic,
 962                                 "RSS disabled, Failed to set RSS key.\n");
 963                 }
 964         }
 965
 966         return enic_set_niccfg(enic, rss_default_cpu, rss_hash_type,
 967                 rss_hash_bits, rss_base_cpu, rss_enable);
 968 }
 969
 970 int enic_setup_finish(struct enic *enic)
 971 {
 972         int ret;
 973
 974         ret = enic_set_rss_nic_cfg(enic);
 975         if (ret) {
 976                 dev_err(enic, "Failed to config nic, aborting.\n");
 977                 return -1;
 978         }
 979
 980         vnic_dev_add_addr(enic->vdev, enic->mac_addr);
 981
 982         /* Default conf */
 983         vnic_dev_packet_filter(enic->vdev,
 984                 1 /* directed  */,
 985                 1 /* multicast */,
 986                 1 /* broadcast */,
 987                 0 /* promisc   */,
 988                 1 /* allmulti  */);
 989
 990         enic->promisc = 0;
 991         enic->allmulti = 1;
 992
 993         return 0;
 994 }
 995
 996 void enic_add_packet_filter(struct enic *enic)
 997 {
 998         /* Args -> directed, multicast, broadcast, promisc, allmulti */
 999         vnic_dev_packet_filter(enic->vdev, 1, 1, 1,
1000                 enic->promisc, enic->allmulti);
1001 }
1002
1003 int enic_get_link_status(struct enic *enic)
1004 {
1005         return vnic_dev_link_status(enic->vdev);
1006 }
1007
1008 static void enic_dev_deinit(struct enic *enic)
1009 {
1010         struct rte_eth_dev *eth_dev = enic->rte_dev;
1011
1012         rte_free(eth_dev->data->mac_addrs);
1013 }
1014
1015
1016 int enic_set_vnic_res(struct enic *enic)
1017 {
1018         struct rte_eth_dev *eth_dev = enic->rte_dev;
1019
1020         if ((enic->rq_count < eth_dev->data->nb_rx_queues) ||
1021                 (enic->wq_count < eth_dev->data->nb_tx_queues)) {
1022                 dev_err(dev, "Not enough resources configured, aborting\n");
1023                 return -1;
1024         }
1025
1026         enic->rq_count = eth_dev->data->nb_rx_queues;
1027         enic->wq_count = eth_dev->data->nb_tx_queues;
1028         if (enic->cq_count < (enic->rq_count + enic->wq_count)) {
1029                 dev_err(dev, "Not enough resources configured, aborting\n");
1030                 return -1;
1031         }
1032
1033         enic->cq_count = enic->rq_count + enic->wq_count;
1034         return 0;
1035 }
1036
1037 static int enic_dev_init(struct enic *enic)
1038 {
1039         int err;
1040         struct rte_eth_dev *eth_dev = enic->rte_dev;
1041
1042         vnic_dev_intr_coal_timer_info_default(enic->vdev);
1043
1044         /* Get vNIC configuration
1045         */
1046         err = enic_get_vnic_config(enic);
1047         if (err) {
1048                 dev_err(dev, "Get vNIC configuration failed, aborting\n");
1049                 return err;
1050         }
1051
1052         eth_dev->data->mac_addrs = rte_zmalloc("enic_mac_addr", ETH_ALEN, 0);
1053         if (!eth_dev->data->mac_addrs) {
1054                 dev_err(enic, "mac addr storage alloc failed, aborting.\n");
1055                 return -1;
1056         }
1057         ether_addr_copy((struct ether_addr *) enic->mac_addr,
1058                 &eth_dev->data->mac_addrs[0]);
1059
1060
1061         /* Get available resource counts
1062         */
1063         enic_get_res_counts(enic);
1064
1065         vnic_dev_set_reset_flag(enic->vdev, 0);
1066
1067         return 0;
1068
1069 }
1070
1071 int enic_probe(struct enic *enic)
1072 {
1073         struct rte_pci_device *pdev = enic->pdev;
1074         int err = -1;
1075
1076         dev_debug(enic, " Initializing ENIC PMD version %s\n", DRV_VERSION);
1077
1078         enic->bar0.vaddr = (void *)pdev->mem_resource[0].addr;
1079         enic->bar0.len = pdev->mem_resource[0].len;
1080
1081         /* Register vNIC device */
1082         enic->vdev = vnic_dev_register(NULL, enic, enic->pdev, &enic->bar0, 1);
1083         if (!enic->vdev) {
1084                 dev_err(enic, "vNIC registration failed, aborting\n");
1085                 goto err_out;
1086         }
1087
1088         vnic_register_cbacks(enic->vdev,
1089                 enic_alloc_consistent,
1090                 enic_free_consistent);
1091
1092         /* Issue device open to get device in known state */
1093         err = enic_dev_open(enic);
1094         if (err) {
1095                 dev_err(enic, "vNIC dev open failed, aborting\n");
1096                 goto err_out_unregister;
1097         }
1098
1099         /* Set ingress vlan rewrite mode before vnic initialization */
1100         err = vnic_dev_set_ig_vlan_rewrite_mode(enic->vdev,
1101                 IG_VLAN_REWRITE_MODE_PRIORITY_TAG_DEFAULT_VLAN);
1102         if (err) {
1103                 dev_err(enic,
1104                         "Failed to set ingress vlan rewrite mode, aborting.\n");
1105                 goto err_out_dev_close;
1106         }
1107
1108         /* Issue device init to initialize the vnic-to-switch link.
1109          * We'll start with carrier off and wait for link UP
1110          * notification later to turn on carrier.  We don't need
1111          * to wait here for the vnic-to-switch link initialization
1112          * to complete; link UP notification is the indication that
1113          * the process is complete.
1114          */
1115
1116         err = vnic_dev_init(enic->vdev, 0);
1117         if (err) {
1118                 dev_err(enic, "vNIC dev init failed, aborting\n");
1119                 goto err_out_dev_close;
1120         }
1121
1122         err = enic_dev_init(enic);
1123         if (err) {
1124                 dev_err(enic, "Device initialization failed, aborting\n");
1125                 goto err_out_dev_close;
1126         }
1127
1128         return 0;
1129
1130 err_out_dev_close:
1131         vnic_dev_close(enic->vdev);
1132 err_out_unregister:
1133         vnic_dev_unregister(enic->vdev);
1134 err_out:
1135         return err;
1136 }
1137
1138 void enic_remove(struct enic *enic)
1139 {
1140         enic_dev_deinit(enic);
1141         vnic_dev_close(enic->vdev);
1142         vnic_dev_unregister(enic->vdev);
1143 }