drivers/net/ena/ena_ethdev.c

   1 /*-
   2 * BSD LICENSE
   3 *
   4 * Copyright (c) 2015-2016 Amazon.com, Inc. or its affiliates.
   5 * All rights reserved.
   6 *
   7 * Redistribution and use in source and binary forms, with or without
   8 * modification, are permitted provided that the following conditions
   9 * are met:
  10 *
  11 * * Redistributions of source code must retain the above copyright
  12 * notice, this list of conditions and the following disclaimer.
  13 * * Redistributions in binary form must reproduce the above copyright
  14 * notice, this list of conditions and the following disclaimer in
  15 * the documentation and/or other materials provided with the
  16 * distribution.
  17 * * Neither the name of copyright holder nor the names of its
  18 * contributors may be used to endorse or promote products derived
  19 * from this software without specific prior written permission.
  20 *
  21 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
  22 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
  23 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
  24 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
  25 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
  26 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
  27 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  28 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  29 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  30 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  31 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  32 */
  33
  34 #include <rte_ether.h>
  35 #include <rte_ethdev_driver.h>
  36 #include <rte_ethdev_pci.h>
  37 #include <rte_tcp.h>
  38 #include <rte_atomic.h>
  39 #include <rte_dev.h>
  40 #include <rte_errno.h>
  41 #include <rte_version.h>
  42 #include <rte_eal_memconfig.h>
  43 #include <rte_net.h>
  44
  45 #include "ena_ethdev.h"
  46 #include "ena_logs.h"
  47 #include "ena_platform.h"
  48 #include "ena_com.h"
  49 #include "ena_eth_com.h"
  50
  51 #include <ena_common_defs.h>
  52 #include <ena_regs_defs.h>
  53 #include <ena_admin_defs.h>
  54 #include <ena_eth_io_defs.h>
  55
  56 #define DRV_MODULE_VER_MAJOR    1
  57 #define DRV_MODULE_VER_MINOR    1
  58 #define DRV_MODULE_VER_SUBMINOR 0
  59
  60 #define ENA_IO_TXQ_IDX(q)       (2 * (q))
  61 #define ENA_IO_RXQ_IDX(q)       (2 * (q) + 1)
  62 /*reverse version of ENA_IO_RXQ_IDX*/
  63 #define ENA_IO_RXQ_IDX_REV(q)   ((q - 1) / 2)
  64
  65 /* While processing submitted and completed descriptors (rx and tx path
  66  * respectively) in a loop it is desired to:
  67  *  - perform batch submissions while populating sumbissmion queue
  68  *  - avoid blocking transmission of other packets during cleanup phase
  69  * Hence the utilization ratio of 1/8 of a queue size.
  70  */
  71 #define ENA_RING_DESCS_RATIO(ring_size) (ring_size / 8)
  72
  73 #define __MERGE_64B_H_L(h, l) (((uint64_t)h << 32) | l)
  74 #define TEST_BIT(val, bit_shift) (val & (1UL << bit_shift))
  75
  76 #define GET_L4_HDR_LEN(mbuf)                                    \
  77         ((rte_pktmbuf_mtod_offset(mbuf, struct tcp_hdr *,       \
  78                 mbuf->l3_len + mbuf->l2_len)->data_off) >> 4)
  79
  80 #define ENA_RX_RSS_TABLE_LOG_SIZE  7
  81 #define ENA_RX_RSS_TABLE_SIZE   (1 << ENA_RX_RSS_TABLE_LOG_SIZE)
  82 #define ENA_HASH_KEY_SIZE       40
  83 #define ENA_ETH_SS_STATS        0xFF
  84 #define ETH_GSTRING_LEN 32
  85
  86 #define ARRAY_SIZE(x) (sizeof(x) / sizeof((x)[0]))
  87
  88 #define ENA_MAX_RING_DESC       ENA_DEFAULT_RING_SIZE
  89 #define ENA_MIN_RING_DESC       128
  90
  91 enum ethtool_stringset {
  92         ETH_SS_TEST             = 0,
  93         ETH_SS_STATS,
  94 };
  95
  96 struct ena_stats {
  97         char name[ETH_GSTRING_LEN];
  98         int stat_offset;
  99 };
 100
 101 #define ENA_STAT_ENA_COM_ENTRY(stat) { \
 102         .name = #stat, \
 103         .stat_offset = offsetof(struct ena_com_stats_admin, stat) \
 104 }
 105
 106 #define ENA_STAT_ENTRY(stat, stat_type) { \
 107         .name = #stat, \
 108         .stat_offset = offsetof(struct ena_stats_##stat_type, stat) \
 109 }
 110
 111 #define ENA_STAT_RX_ENTRY(stat) \
 112         ENA_STAT_ENTRY(stat, rx)
 113
 114 #define ENA_STAT_TX_ENTRY(stat) \
 115         ENA_STAT_ENTRY(stat, tx)
 116
 117 #define ENA_STAT_GLOBAL_ENTRY(stat) \
 118         ENA_STAT_ENTRY(stat, dev)
 119
 120 /*
 121  * Each rte_memzone should have unique name.
 122  * To satisfy it, count number of allocation and add it to name.
 123  */
 124 uint32_t ena_alloc_cnt;
 125
 126 static const struct ena_stats ena_stats_global_strings[] = {
 127         ENA_STAT_GLOBAL_ENTRY(tx_timeout),
 128         ENA_STAT_GLOBAL_ENTRY(io_suspend),
 129         ENA_STAT_GLOBAL_ENTRY(io_resume),
 130         ENA_STAT_GLOBAL_ENTRY(wd_expired),
 131         ENA_STAT_GLOBAL_ENTRY(interface_up),
 132         ENA_STAT_GLOBAL_ENTRY(interface_down),
 133         ENA_STAT_GLOBAL_ENTRY(admin_q_pause),
 134 };
 135
 136 static const struct ena_stats ena_stats_tx_strings[] = {
 137         ENA_STAT_TX_ENTRY(cnt),
 138         ENA_STAT_TX_ENTRY(bytes),
 139         ENA_STAT_TX_ENTRY(queue_stop),
 140         ENA_STAT_TX_ENTRY(queue_wakeup),
 141         ENA_STAT_TX_ENTRY(dma_mapping_err),
 142         ENA_STAT_TX_ENTRY(linearize),
 143         ENA_STAT_TX_ENTRY(linearize_failed),
 144         ENA_STAT_TX_ENTRY(tx_poll),
 145         ENA_STAT_TX_ENTRY(doorbells),
 146         ENA_STAT_TX_ENTRY(prepare_ctx_err),
 147         ENA_STAT_TX_ENTRY(missing_tx_comp),
 148         ENA_STAT_TX_ENTRY(bad_req_id),
 149 };
 150
 151 static const struct ena_stats ena_stats_rx_strings[] = {
 152         ENA_STAT_RX_ENTRY(cnt),
 153         ENA_STAT_RX_ENTRY(bytes),
 154         ENA_STAT_RX_ENTRY(refil_partial),
 155         ENA_STAT_RX_ENTRY(bad_csum),
 156         ENA_STAT_RX_ENTRY(page_alloc_fail),
 157         ENA_STAT_RX_ENTRY(skb_alloc_fail),
 158         ENA_STAT_RX_ENTRY(dma_mapping_err),
 159         ENA_STAT_RX_ENTRY(bad_desc_num),
 160         ENA_STAT_RX_ENTRY(small_copy_len_pkt),
 161 };
 162
 163 static const struct ena_stats ena_stats_ena_com_strings[] = {
 164         ENA_STAT_ENA_COM_ENTRY(aborted_cmd),
 165         ENA_STAT_ENA_COM_ENTRY(submitted_cmd),
 166         ENA_STAT_ENA_COM_ENTRY(completed_cmd),
 167         ENA_STAT_ENA_COM_ENTRY(out_of_space),
 168         ENA_STAT_ENA_COM_ENTRY(no_completion),
 169 };
 170
 171 #define ENA_STATS_ARRAY_GLOBAL  ARRAY_SIZE(ena_stats_global_strings)
 172 #define ENA_STATS_ARRAY_TX      ARRAY_SIZE(ena_stats_tx_strings)
 173 #define ENA_STATS_ARRAY_RX      ARRAY_SIZE(ena_stats_rx_strings)
 174 #define ENA_STATS_ARRAY_ENA_COM ARRAY_SIZE(ena_stats_ena_com_strings)
 175
 176 #define QUEUE_OFFLOADS (DEV_TX_OFFLOAD_TCP_CKSUM |\
 177                         DEV_TX_OFFLOAD_UDP_CKSUM |\
 178                         DEV_TX_OFFLOAD_IPV4_CKSUM |\
 179                         DEV_TX_OFFLOAD_TCP_TSO)
 180 #define MBUF_OFFLOADS (PKT_TX_L4_MASK |\
 181                        PKT_TX_IP_CKSUM |\
 182                        PKT_TX_TCP_SEG)
 183
 184 /** Vendor ID used by Amazon devices */
 185 #define PCI_VENDOR_ID_AMAZON 0x1D0F
 186 /** Amazon devices */
 187 #define PCI_DEVICE_ID_ENA_VF    0xEC20
 188 #define PCI_DEVICE_ID_ENA_LLQ_VF        0xEC21
 189
 190 #define ENA_TX_OFFLOAD_MASK     (\
 191         PKT_TX_L4_MASK |         \
 192         PKT_TX_IP_CKSUM |        \
 193         PKT_TX_TCP_SEG)
 194
 195 #define ENA_TX_OFFLOAD_NOTSUP_MASK      \
 196         (PKT_TX_OFFLOAD_MASK ^ ENA_TX_OFFLOAD_MASK)
 197
 198 int ena_logtype_init;
 199 int ena_logtype_driver;
 200
 201 static const struct rte_pci_id pci_id_ena_map[] = {
 202         { RTE_PCI_DEVICE(PCI_VENDOR_ID_AMAZON, PCI_DEVICE_ID_ENA_VF) },
 203         { RTE_PCI_DEVICE(PCI_VENDOR_ID_AMAZON, PCI_DEVICE_ID_ENA_LLQ_VF) },
 204         { .device_id = 0 },
 205 };
 206
 207 static struct ena_aenq_handlers aenq_handlers;
 208
 209 static int ena_device_init(struct ena_com_dev *ena_dev,
 210                            struct ena_com_dev_get_features_ctx *get_feat_ctx,
 211                            bool *wd_state);
 212 static int ena_dev_configure(struct rte_eth_dev *dev);
 213 static uint16_t eth_ena_xmit_pkts(void *tx_queue, struct rte_mbuf **tx_pkts,
 214                                   uint16_t nb_pkts);
 215 static uint16_t eth_ena_prep_pkts(void *tx_queue, struct rte_mbuf **tx_pkts,
 216                 uint16_t nb_pkts);
 217 static int ena_tx_queue_setup(struct rte_eth_dev *dev, uint16_t queue_idx,
 218                               uint16_t nb_desc, unsigned int socket_id,
 219                               const struct rte_eth_txconf *tx_conf);
 220 static int ena_rx_queue_setup(struct rte_eth_dev *dev, uint16_t queue_idx,
 221                               uint16_t nb_desc, unsigned int socket_id,
 222                               const struct rte_eth_rxconf *rx_conf,
 223                               struct rte_mempool *mp);
 224 static uint16_t eth_ena_recv_pkts(void *rx_queue,
 225                                   struct rte_mbuf **rx_pkts, uint16_t nb_pkts);
 226 static int ena_populate_rx_queue(struct ena_ring *rxq, unsigned int count);
 227 static void ena_init_rings(struct ena_adapter *adapter);
 228 static int ena_mtu_set(struct rte_eth_dev *dev, uint16_t mtu);
 229 static int ena_start(struct rte_eth_dev *dev);
 230 static void ena_stop(struct rte_eth_dev *dev);
 231 static void ena_close(struct rte_eth_dev *dev);
 232 static int ena_dev_reset(struct rte_eth_dev *dev);
 233 static int ena_stats_get(struct rte_eth_dev *dev, struct rte_eth_stats *stats);
 234 static void ena_rx_queue_release_all(struct rte_eth_dev *dev);
 235 static void ena_tx_queue_release_all(struct rte_eth_dev *dev);
 236 static void ena_rx_queue_release(void *queue);
 237 static void ena_tx_queue_release(void *queue);
 238 static void ena_rx_queue_release_bufs(struct ena_ring *ring);
 239 static void ena_tx_queue_release_bufs(struct ena_ring *ring);
 240 static int ena_link_update(struct rte_eth_dev *dev,
 241                            int wait_to_complete);
 242 static int ena_queue_restart(struct ena_ring *ring);
 243 static int ena_queue_restart_all(struct rte_eth_dev *dev,
 244                                  enum ena_ring_type ring_type);
 245 static void ena_stats_restart(struct rte_eth_dev *dev);
 246 static void ena_infos_get(struct rte_eth_dev *dev,
 247                           struct rte_eth_dev_info *dev_info);
 248 static int ena_rss_reta_update(struct rte_eth_dev *dev,
 249                                struct rte_eth_rss_reta_entry64 *reta_conf,
 250                                uint16_t reta_size);
 251 static int ena_rss_reta_query(struct rte_eth_dev *dev,
 252                               struct rte_eth_rss_reta_entry64 *reta_conf,
 253                               uint16_t reta_size);
 254 static int ena_get_sset_count(struct rte_eth_dev *dev, int sset);
 255 static void ena_interrupt_handler_rte(void *cb_arg);
 256 static void ena_timer_wd_callback(struct rte_timer *timer, void *arg);
 257
 258 static const struct eth_dev_ops ena_dev_ops = {
 259         .dev_configure        = ena_dev_configure,
 260         .dev_infos_get        = ena_infos_get,
 261         .rx_queue_setup       = ena_rx_queue_setup,
 262         .tx_queue_setup       = ena_tx_queue_setup,
 263         .dev_start            = ena_start,
 264         .dev_stop             = ena_stop,
 265         .link_update          = ena_link_update,
 266         .stats_get            = ena_stats_get,
 267         .mtu_set              = ena_mtu_set,
 268         .rx_queue_release     = ena_rx_queue_release,
 269         .tx_queue_release     = ena_tx_queue_release,
 270         .dev_close            = ena_close,
 271         .dev_reset            = ena_dev_reset,
 272         .reta_update          = ena_rss_reta_update,
 273         .reta_query           = ena_rss_reta_query,
 274 };
 275
 276 #define NUMA_NO_NODE    SOCKET_ID_ANY
 277
 278 static inline int ena_cpu_to_node(int cpu)
 279 {
 280         struct rte_config *config = rte_eal_get_configuration();
 281         struct rte_fbarray *arr = &config->mem_config->memzones;
 282         const struct rte_memzone *mz;
 283
 284         if (unlikely(cpu >= RTE_MAX_MEMZONE))
 285                 return NUMA_NO_NODE;
 286
 287         mz = rte_fbarray_get(arr, cpu);
 288
 289         return mz->socket_id;
 290 }
 291
 292 static inline void ena_rx_mbuf_prepare(struct rte_mbuf *mbuf,
 293                                        struct ena_com_rx_ctx *ena_rx_ctx)
 294 {
 295         uint64_t ol_flags = 0;
 296         uint32_t packet_type = 0;
 297
 298         if (ena_rx_ctx->l4_proto == ENA_ETH_IO_L4_PROTO_TCP)
 299                 packet_type |= RTE_PTYPE_L4_TCP;
 300         else if (ena_rx_ctx->l4_proto == ENA_ETH_IO_L4_PROTO_UDP)
 301                 packet_type |= RTE_PTYPE_L4_UDP;
 302
 303         if (ena_rx_ctx->l3_proto == ENA_ETH_IO_L3_PROTO_IPV4)
 304                 packet_type |= RTE_PTYPE_L3_IPV4;
 305         else if (ena_rx_ctx->l3_proto == ENA_ETH_IO_L3_PROTO_IPV6)
 306                 packet_type |= RTE_PTYPE_L3_IPV6;
 307
 308         if (unlikely(ena_rx_ctx->l4_csum_err))
 309                 ol_flags |= PKT_RX_L4_CKSUM_BAD;
 310         if (unlikely(ena_rx_ctx->l3_csum_err))
 311                 ol_flags |= PKT_RX_IP_CKSUM_BAD;
 312
 313         mbuf->ol_flags = ol_flags;
 314         mbuf->packet_type = packet_type;
 315 }
 316
 317 static inline void ena_tx_mbuf_prepare(struct rte_mbuf *mbuf,
 318                                        struct ena_com_tx_ctx *ena_tx_ctx,
 319                                        uint64_t queue_offloads)
 320 {
 321         struct ena_com_tx_meta *ena_meta = &ena_tx_ctx->ena_meta;
 322
 323         if ((mbuf->ol_flags & MBUF_OFFLOADS) &&
 324             (queue_offloads & QUEUE_OFFLOADS)) {
 325                 /* check if TSO is required */
 326                 if ((mbuf->ol_flags & PKT_TX_TCP_SEG) &&
 327                     (queue_offloads & DEV_TX_OFFLOAD_TCP_TSO)) {
 328                         ena_tx_ctx->tso_enable = true;
 329
 330                         ena_meta->l4_hdr_len = GET_L4_HDR_LEN(mbuf);
 331                 }
 332
 333                 /* check if L3 checksum is needed */
 334                 if ((mbuf->ol_flags & PKT_TX_IP_CKSUM) &&
 335                     (queue_offloads & DEV_TX_OFFLOAD_IPV4_CKSUM))
 336                         ena_tx_ctx->l3_csum_enable = true;
 337
 338                 if (mbuf->ol_flags & PKT_TX_IPV6) {
 339                         ena_tx_ctx->l3_proto = ENA_ETH_IO_L3_PROTO_IPV6;
 340                 } else {
 341                         ena_tx_ctx->l3_proto = ENA_ETH_IO_L3_PROTO_IPV4;
 342
 343                         /* set don't fragment (DF) flag */
 344                         if (mbuf->packet_type &
 345                                 (RTE_PTYPE_L4_NONFRAG
 346                                  | RTE_PTYPE_INNER_L4_NONFRAG))
 347                                 ena_tx_ctx->df = true;
 348                 }
 349
 350                 /* check if L4 checksum is needed */
 351                 if ((mbuf->ol_flags & PKT_TX_TCP_CKSUM) &&
 352                     (queue_offloads & DEV_TX_OFFLOAD_TCP_CKSUM)) {
 353                         ena_tx_ctx->l4_proto = ENA_ETH_IO_L4_PROTO_TCP;
 354                         ena_tx_ctx->l4_csum_enable = true;
 355                 } else if ((mbuf->ol_flags & PKT_TX_UDP_CKSUM) &&
 356                            (queue_offloads & DEV_TX_OFFLOAD_UDP_CKSUM)) {
 357                         ena_tx_ctx->l4_proto = ENA_ETH_IO_L4_PROTO_UDP;
 358                         ena_tx_ctx->l4_csum_enable = true;
 359                 } else {
 360                         ena_tx_ctx->l4_proto = ENA_ETH_IO_L4_PROTO_UNKNOWN;
 361                         ena_tx_ctx->l4_csum_enable = false;
 362                 }
 363
 364                 ena_meta->mss = mbuf->tso_segsz;
 365                 ena_meta->l3_hdr_len = mbuf->l3_len;
 366                 ena_meta->l3_hdr_offset = mbuf->l2_len;
 367
 368                 ena_tx_ctx->meta_valid = true;
 369         } else {
 370                 ena_tx_ctx->meta_valid = false;
 371         }
 372 }
 373
 374 static inline int validate_rx_req_id(struct ena_ring *rx_ring, uint16_t req_id)
 375 {
 376         if (likely(req_id < rx_ring->ring_size))
 377                 return 0;
 378
 379         RTE_LOG(ERR, PMD, "Invalid rx req_id: %hu\n", req_id);
 380
 381         rx_ring->adapter->reset_reason = ENA_REGS_RESET_INV_RX_REQ_ID;
 382         rx_ring->adapter->trigger_reset = true;
 383
 384         return -EFAULT;
 385 }
 386
 387 static int validate_tx_req_id(struct ena_ring *tx_ring, u16 req_id)
 388 {
 389         struct ena_tx_buffer *tx_info = NULL;
 390
 391         if (likely(req_id < tx_ring->ring_size)) {
 392                 tx_info = &tx_ring->tx_buffer_info[req_id];
 393                 if (likely(tx_info->mbuf))
 394                         return 0;
 395         }
 396
 397         if (tx_info)
 398                 RTE_LOG(ERR, PMD, "tx_info doesn't have valid mbuf\n");
 399         else
 400                 RTE_LOG(ERR, PMD, "Invalid req_id: %hu\n", req_id);
 401
 402         /* Trigger device reset */
 403         tx_ring->adapter->reset_reason = ENA_REGS_RESET_INV_TX_REQ_ID;
 404         tx_ring->adapter->trigger_reset = true;
 405         return -EFAULT;
 406 }
 407
 408 static void ena_config_host_info(struct ena_com_dev *ena_dev)
 409 {
 410         struct ena_admin_host_info *host_info;
 411         int rc;
 412
 413         /* Allocate only the host info */
 414         rc = ena_com_allocate_host_info(ena_dev);
 415         if (rc) {
 416                 RTE_LOG(ERR, PMD, "Cannot allocate host info\n");
 417                 return;
 418         }
 419
 420         host_info = ena_dev->host_attr.host_info;
 421
 422         host_info->os_type = ENA_ADMIN_OS_DPDK;
 423         host_info->kernel_ver = RTE_VERSION;
 424         snprintf((char *)host_info->kernel_ver_str,
 425                  sizeof(host_info->kernel_ver_str),
 426                  "%s", rte_version());
 427         host_info->os_dist = RTE_VERSION;
 428         snprintf((char *)host_info->os_dist_str,
 429                  sizeof(host_info->os_dist_str),
 430                  "%s", rte_version());
 431         host_info->driver_version =
 432                 (DRV_MODULE_VER_MAJOR) |
 433                 (DRV_MODULE_VER_MINOR << ENA_ADMIN_HOST_INFO_MINOR_SHIFT) |
 434                 (DRV_MODULE_VER_SUBMINOR <<
 435                         ENA_ADMIN_HOST_INFO_SUB_MINOR_SHIFT);
 436
 437         rc = ena_com_set_host_attributes(ena_dev);
 438         if (rc) {
 439                 if (rc == -ENA_COM_UNSUPPORTED)
 440                         RTE_LOG(WARNING, PMD, "Cannot set host attributes\n");
 441                 else
 442                         RTE_LOG(ERR, PMD, "Cannot set host attributes\n");
 443
 444                 goto err;
 445         }
 446
 447         return;
 448
 449 err:
 450         ena_com_delete_host_info(ena_dev);
 451 }
 452
 453 static int
 454 ena_get_sset_count(struct rte_eth_dev *dev, int sset)
 455 {
 456         if (sset != ETH_SS_STATS)
 457                 return -EOPNOTSUPP;
 458
 459          /* Workaround for clang:
 460          * touch internal structures to prevent
 461          * compiler error
 462          */
 463         ENA_TOUCH(ena_stats_global_strings);
 464         ENA_TOUCH(ena_stats_tx_strings);
 465         ENA_TOUCH(ena_stats_rx_strings);
 466         ENA_TOUCH(ena_stats_ena_com_strings);
 467
 468         return  dev->data->nb_tx_queues *
 469                 (ENA_STATS_ARRAY_TX + ENA_STATS_ARRAY_RX) +
 470                 ENA_STATS_ARRAY_GLOBAL + ENA_STATS_ARRAY_ENA_COM;
 471 }
 472
 473 static void ena_config_debug_area(struct ena_adapter *adapter)
 474 {
 475         u32 debug_area_size;
 476         int rc, ss_count;
 477
 478         ss_count = ena_get_sset_count(adapter->rte_dev, ETH_SS_STATS);
 479         if (ss_count <= 0) {
 480                 RTE_LOG(ERR, PMD, "SS count is negative\n");
 481                 return;
 482         }
 483
 484         /* allocate 32 bytes for each string and 64bit for the value */
 485         debug_area_size = ss_count * ETH_GSTRING_LEN + sizeof(u64) * ss_count;
 486
 487         rc = ena_com_allocate_debug_area(&adapter->ena_dev, debug_area_size);
 488         if (rc) {
 489                 RTE_LOG(ERR, PMD, "Cannot allocate debug area\n");
 490                 return;
 491         }
 492
 493         rc = ena_com_set_host_attributes(&adapter->ena_dev);
 494         if (rc) {
 495                 if (rc == -ENA_COM_UNSUPPORTED)
 496                         RTE_LOG(WARNING, PMD, "Cannot set host attributes\n");
 497                 else
 498                         RTE_LOG(ERR, PMD, "Cannot set host attributes\n");
 499
 500                 goto err;
 501         }
 502
 503         return;
 504 err:
 505         ena_com_delete_debug_area(&adapter->ena_dev);
 506 }
 507
 508 static void ena_close(struct rte_eth_dev *dev)
 509 {
 510         struct ena_adapter *adapter =
 511                 (struct ena_adapter *)(dev->data->dev_private);
 512
 513         ena_stop(dev);
 514         adapter->state = ENA_ADAPTER_STATE_CLOSED;
 515
 516         ena_rx_queue_release_all(dev);
 517         ena_tx_queue_release_all(dev);
 518 }
 519
 520 static int
 521 ena_dev_reset(struct rte_eth_dev *dev)
 522 {
 523         struct rte_mempool *mb_pool_rx[ENA_MAX_NUM_QUEUES];
 524         struct rte_eth_dev *eth_dev;
 525         struct rte_pci_device *pci_dev;
 526         struct rte_intr_handle *intr_handle;
 527         struct ena_com_dev *ena_dev;
 528         struct ena_com_dev_get_features_ctx get_feat_ctx;
 529         struct ena_adapter *adapter;
 530         int nb_queues;
 531         int rc, i;
 532         bool wd_state;
 533
 534         adapter = (struct ena_adapter *)(dev->data->dev_private);
 535         ena_dev = &adapter->ena_dev;
 536         eth_dev = adapter->rte_dev;
 537         pci_dev = RTE_ETH_DEV_TO_PCI(eth_dev);
 538         intr_handle = &pci_dev->intr_handle;
 539         nb_queues = eth_dev->data->nb_rx_queues;
 540
 541         ena_com_set_admin_running_state(ena_dev, false);
 542
 543         rc = ena_com_dev_reset(ena_dev, adapter->reset_reason);
 544         if (rc)
 545                 RTE_LOG(ERR, PMD, "Device reset failed\n");
 546
 547         for (i = 0; i < nb_queues; i++)
 548                 mb_pool_rx[i] = adapter->rx_ring[i].mb_pool;
 549
 550         ena_rx_queue_release_all(eth_dev);
 551         ena_tx_queue_release_all(eth_dev);
 552
 553         rte_intr_disable(intr_handle);
 554
 555         ena_com_abort_admin_commands(ena_dev);
 556         ena_com_wait_for_abort_completion(ena_dev);
 557         ena_com_admin_destroy(ena_dev);
 558         ena_com_mmio_reg_read_request_destroy(ena_dev);
 559
 560         rc = ena_device_init(ena_dev, &get_feat_ctx, &wd_state);
 561         if (rc) {
 562                 PMD_INIT_LOG(CRIT, "Cannot initialize device\n");
 563                 return rc;
 564         }
 565         adapter->wd_state = wd_state;
 566
 567         rte_intr_enable(intr_handle);
 568         ena_com_set_admin_polling_mode(ena_dev, false);
 569         ena_com_admin_aenq_enable(ena_dev);
 570
 571         for (i = 0; i < nb_queues; ++i)
 572                 ena_rx_queue_setup(eth_dev, i, adapter->rx_ring_size, 0, NULL,
 573                         mb_pool_rx[i]);
 574
 575         for (i = 0; i < nb_queues; ++i)
 576                 ena_tx_queue_setup(eth_dev, i, adapter->tx_ring_size, 0, NULL);
 577
 578         adapter->trigger_reset = false;
 579
 580         return 0;
 581 }
 582
 583 static int ena_rss_reta_update(struct rte_eth_dev *dev,
 584                                struct rte_eth_rss_reta_entry64 *reta_conf,
 585                                uint16_t reta_size)
 586 {
 587         struct ena_adapter *adapter =
 588                 (struct ena_adapter *)(dev->data->dev_private);
 589         struct ena_com_dev *ena_dev = &adapter->ena_dev;
 590         int rc, i;
 591         u16 entry_value;
 592         int conf_idx;
 593         int idx;
 594
 595         if ((reta_size == 0) || (reta_conf == NULL))
 596                 return -EINVAL;
 597
 598         if (reta_size > ENA_RX_RSS_TABLE_SIZE) {
 599                 RTE_LOG(WARNING, PMD,
 600                         "indirection table %d is bigger than supported (%d)\n",
 601                         reta_size, ENA_RX_RSS_TABLE_SIZE);
 602                 return -EINVAL;
 603         }
 604
 605         for (i = 0 ; i < reta_size ; i++) {
 606                 /* each reta_conf is for 64 entries.
 607                  * to support 128 we use 2 conf of 64
 608                  */
 609                 conf_idx = i / RTE_RETA_GROUP_SIZE;
 610                 idx = i % RTE_RETA_GROUP_SIZE;
 611                 if (TEST_BIT(reta_conf[conf_idx].mask, idx)) {
 612                         entry_value =
 613                                 ENA_IO_RXQ_IDX(reta_conf[conf_idx].reta[idx]);
 614
 615                         rc = ena_com_indirect_table_fill_entry(ena_dev,
 616                                                                i,
 617                                                                entry_value);
 618                         if (unlikely(rc && rc != ENA_COM_UNSUPPORTED)) {
 619                                 RTE_LOG(ERR, PMD,
 620                                         "Cannot fill indirect table\n");
 621                                 return rc;
 622                         }
 623                 }
 624         }
 625
 626         rc = ena_com_indirect_table_set(ena_dev);
 627         if (unlikely(rc && rc != ENA_COM_UNSUPPORTED)) {
 628                 RTE_LOG(ERR, PMD, "Cannot flush the indirect table\n");
 629                 return rc;
 630         }
 631
 632         RTE_LOG(DEBUG, PMD, "%s(): RSS configured %d entries  for port %d\n",
 633                 __func__, reta_size, adapter->rte_dev->data->port_id);
 634
 635         return 0;
 636 }
 637
 638 /* Query redirection table. */
 639 static int ena_rss_reta_query(struct rte_eth_dev *dev,
 640                               struct rte_eth_rss_reta_entry64 *reta_conf,
 641                               uint16_t reta_size)
 642 {
 643         struct ena_adapter *adapter =
 644                 (struct ena_adapter *)(dev->data->dev_private);
 645         struct ena_com_dev *ena_dev = &adapter->ena_dev;
 646         int rc;
 647         int i;
 648         u32 indirect_table[ENA_RX_RSS_TABLE_SIZE] = {0};
 649         int reta_conf_idx;
 650         int reta_idx;
 651
 652         if (reta_size == 0 || reta_conf == NULL ||
 653             (reta_size > RTE_RETA_GROUP_SIZE && ((reta_conf + 1) == NULL)))
 654                 return -EINVAL;
 655
 656         rc = ena_com_indirect_table_get(ena_dev, indirect_table);
 657         if (unlikely(rc && rc != ENA_COM_UNSUPPORTED)) {
 658                 RTE_LOG(ERR, PMD, "cannot get indirect table\n");
 659                 return -ENOTSUP;
 660         }
 661
 662         for (i = 0 ; i < reta_size ; i++) {
 663                 reta_conf_idx = i / RTE_RETA_GROUP_SIZE;
 664                 reta_idx = i % RTE_RETA_GROUP_SIZE;
 665                 if (TEST_BIT(reta_conf[reta_conf_idx].mask, reta_idx))
 666                         reta_conf[reta_conf_idx].reta[reta_idx] =
 667                                 ENA_IO_RXQ_IDX_REV(indirect_table[i]);
 668         }
 669
 670         return 0;
 671 }
 672
 673 static int ena_rss_init_default(struct ena_adapter *adapter)
 674 {
 675         struct ena_com_dev *ena_dev = &adapter->ena_dev;
 676         uint16_t nb_rx_queues = adapter->rte_dev->data->nb_rx_queues;
 677         int rc, i;
 678         u32 val;
 679
 680         rc = ena_com_rss_init(ena_dev, ENA_RX_RSS_TABLE_LOG_SIZE);
 681         if (unlikely(rc)) {
 682                 RTE_LOG(ERR, PMD, "Cannot init indirect table\n");
 683                 goto err_rss_init;
 684         }
 685
 686         for (i = 0; i < ENA_RX_RSS_TABLE_SIZE; i++) {
 687                 val = i % nb_rx_queues;
 688                 rc = ena_com_indirect_table_fill_entry(ena_dev, i,
 689                                                        ENA_IO_RXQ_IDX(val));
 690                 if (unlikely(rc && (rc != ENA_COM_UNSUPPORTED))) {
 691                         RTE_LOG(ERR, PMD, "Cannot fill indirect table\n");
 692                         goto err_fill_indir;
 693                 }
 694         }
 695
 696         rc = ena_com_fill_hash_function(ena_dev, ENA_ADMIN_CRC32, NULL,
 697                                         ENA_HASH_KEY_SIZE, 0xFFFFFFFF);
 698         if (unlikely(rc && (rc != ENA_COM_UNSUPPORTED))) {
 699                 RTE_LOG(INFO, PMD, "Cannot fill hash function\n");
 700                 goto err_fill_indir;
 701         }
 702
 703         rc = ena_com_set_default_hash_ctrl(ena_dev);
 704         if (unlikely(rc && (rc != ENA_COM_UNSUPPORTED))) {
 705                 RTE_LOG(INFO, PMD, "Cannot fill hash control\n");
 706                 goto err_fill_indir;
 707         }
 708
 709         rc = ena_com_indirect_table_set(ena_dev);
 710         if (unlikely(rc && (rc != ENA_COM_UNSUPPORTED))) {
 711                 RTE_LOG(ERR, PMD, "Cannot flush the indirect table\n");
 712                 goto err_fill_indir;
 713         }
 714         RTE_LOG(DEBUG, PMD, "RSS configured for port %d\n",
 715                 adapter->rte_dev->data->port_id);
 716
 717         return 0;
 718
 719 err_fill_indir:
 720         ena_com_rss_destroy(ena_dev);
 721 err_rss_init:
 722
 723         return rc;
 724 }
 725
 726 static void ena_rx_queue_release_all(struct rte_eth_dev *dev)
 727 {
 728         struct ena_ring **queues = (struct ena_ring **)dev->data->rx_queues;
 729         int nb_queues = dev->data->nb_rx_queues;
 730         int i;
 731
 732         for (i = 0; i < nb_queues; i++)
 733                 ena_rx_queue_release(queues[i]);
 734 }
 735
 736 static void ena_tx_queue_release_all(struct rte_eth_dev *dev)
 737 {
 738         struct ena_ring **queues = (struct ena_ring **)dev->data->tx_queues;
 739         int nb_queues = dev->data->nb_tx_queues;
 740         int i;
 741
 742         for (i = 0; i < nb_queues; i++)
 743                 ena_tx_queue_release(queues[i]);
 744 }
 745
 746 static void ena_rx_queue_release(void *queue)
 747 {
 748         struct ena_ring *ring = (struct ena_ring *)queue;
 749         struct ena_adapter *adapter = ring->adapter;
 750         int ena_qid;
 751
 752         ena_assert_msg(ring->configured,
 753                        "API violation - releasing not configured queue");
 754         ena_assert_msg(ring->adapter->state != ENA_ADAPTER_STATE_RUNNING,
 755                        "API violation");
 756
 757         /* Destroy HW queue */
 758         ena_qid = ENA_IO_RXQ_IDX(ring->id);
 759         ena_com_destroy_io_queue(&adapter->ena_dev, ena_qid);
 760
 761         /* Free all bufs */
 762         ena_rx_queue_release_bufs(ring);
 763
 764         /* Free ring resources */
 765         if (ring->rx_buffer_info)
 766                 rte_free(ring->rx_buffer_info);
 767         ring->rx_buffer_info = NULL;
 768
 769         if (ring->empty_rx_reqs)
 770                 rte_free(ring->empty_rx_reqs);
 771         ring->empty_rx_reqs = NULL;
 772
 773         ring->configured = 0;
 774
 775         RTE_LOG(NOTICE, PMD, "RX Queue %d:%d released\n",
 776                 ring->port_id, ring->id);
 777 }
 778
 779 static void ena_tx_queue_release(void *queue)
 780 {
 781         struct ena_ring *ring = (struct ena_ring *)queue;
 782         struct ena_adapter *adapter = ring->adapter;
 783         int ena_qid;
 784
 785         ena_assert_msg(ring->configured,
 786                        "API violation. Releasing not configured queue");
 787         ena_assert_msg(ring->adapter->state != ENA_ADAPTER_STATE_RUNNING,
 788                        "API violation");
 789
 790         /* Destroy HW queue */
 791         ena_qid = ENA_IO_TXQ_IDX(ring->id);
 792         ena_com_destroy_io_queue(&adapter->ena_dev, ena_qid);
 793
 794         /* Free all bufs */
 795         ena_tx_queue_release_bufs(ring);
 796
 797         /* Free ring resources */
 798         if (ring->tx_buffer_info)
 799                 rte_free(ring->tx_buffer_info);
 800
 801         if (ring->empty_tx_reqs)
 802                 rte_free(ring->empty_tx_reqs);
 803
 804         ring->empty_tx_reqs = NULL;
 805         ring->tx_buffer_info = NULL;
 806
 807         ring->configured = 0;
 808
 809         RTE_LOG(NOTICE, PMD, "TX Queue %d:%d released\n",
 810                 ring->port_id, ring->id);
 811 }
 812
 813 static void ena_rx_queue_release_bufs(struct ena_ring *ring)
 814 {
 815         unsigned int ring_mask = ring->ring_size - 1;
 816
 817         while (ring->next_to_clean != ring->next_to_use) {
 818                 struct rte_mbuf *m =
 819                         ring->rx_buffer_info[ring->next_to_clean & ring_mask];
 820
 821                 if (m)
 822                         rte_mbuf_raw_free(m);
 823
 824                 ring->next_to_clean++;
 825         }
 826 }
 827
 828 static void ena_tx_queue_release_bufs(struct ena_ring *ring)
 829 {
 830         unsigned int i;
 831
 832         for (i = 0; i < ring->ring_size; ++i) {
 833                 struct ena_tx_buffer *tx_buf = &ring->tx_buffer_info[i];
 834
 835                 if (tx_buf->mbuf)
 836                         rte_pktmbuf_free(tx_buf->mbuf);
 837
 838                 ring->next_to_clean++;
 839         }
 840 }
 841
 842 static int ena_link_update(struct rte_eth_dev *dev,
 843                            __rte_unused int wait_to_complete)
 844 {
 845         struct rte_eth_link *link = &dev->data->dev_link;
 846         struct ena_adapter *adapter;
 847
 848         adapter = (struct ena_adapter *)(dev->data->dev_private);
 849
 850         link->link_status = adapter->link_status ? ETH_LINK_UP : ETH_LINK_DOWN;
 851         link->link_speed = ETH_SPEED_NUM_NONE;
 852         link->link_duplex = ETH_LINK_FULL_DUPLEX;
 853
 854         return 0;
 855 }
 856
 857 static int ena_queue_restart_all(struct rte_eth_dev *dev,
 858                                  enum ena_ring_type ring_type)
 859 {
 860         struct ena_adapter *adapter =
 861                 (struct ena_adapter *)(dev->data->dev_private);
 862         struct ena_ring *queues = NULL;
 863         int nb_queues;
 864         int i = 0;
 865         int rc = 0;
 866
 867         if (ring_type == ENA_RING_TYPE_RX) {
 868                 queues = adapter->rx_ring;
 869                 nb_queues = dev->data->nb_rx_queues;
 870         } else {
 871                 queues = adapter->tx_ring;
 872                 nb_queues = dev->data->nb_tx_queues;
 873         }
 874         for (i = 0; i < nb_queues; i++) {
 875                 if (queues[i].configured) {
 876                         if (ring_type == ENA_RING_TYPE_RX) {
 877                                 ena_assert_msg(
 878                                         dev->data->rx_queues[i] == &queues[i],
 879                                         "Inconsistent state of rx queues\n");
 880                         } else {
 881                                 ena_assert_msg(
 882                                         dev->data->tx_queues[i] == &queues[i],
 883                                         "Inconsistent state of tx queues\n");
 884                         }
 885
 886                         rc = ena_queue_restart(&queues[i]);
 887
 888                         if (rc) {
 889                                 PMD_INIT_LOG(ERR,
 890                                              "failed to restart queue %d type(%d)",
 891                                              i, ring_type);
 892                                 return rc;
 893                         }
 894                 }
 895         }
 896
 897         return 0;
 898 }
 899
 900 static uint32_t ena_get_mtu_conf(struct ena_adapter *adapter)
 901 {
 902         uint32_t max_frame_len = adapter->max_mtu;
 903
 904         if (adapter->rte_eth_dev_data->dev_conf.rxmode.offloads &
 905             DEV_RX_OFFLOAD_JUMBO_FRAME)
 906                 max_frame_len =
 907                         adapter->rte_eth_dev_data->dev_conf.rxmode.max_rx_pkt_len;
 908
 909         return max_frame_len;
 910 }
 911
 912 static int ena_check_valid_conf(struct ena_adapter *adapter)
 913 {
 914         uint32_t max_frame_len = ena_get_mtu_conf(adapter);
 915
 916         if (max_frame_len > adapter->max_mtu || max_frame_len < ENA_MIN_MTU) {
 917                 PMD_INIT_LOG(ERR, "Unsupported MTU of %d. "
 918                                   "max mtu: %d, min mtu: %d\n",
 919                              max_frame_len, adapter->max_mtu, ENA_MIN_MTU);
 920                 return ENA_COM_UNSUPPORTED;
 921         }
 922
 923         return 0;
 924 }
 925
 926 static int
 927 ena_calc_queue_size(struct ena_com_dev *ena_dev,
 928                     u16 *max_tx_sgl_size,
 929                     struct ena_com_dev_get_features_ctx *get_feat_ctx)
 930 {
 931         uint32_t queue_size = ENA_DEFAULT_RING_SIZE;
 932
 933         queue_size = RTE_MIN(queue_size,
 934                              get_feat_ctx->max_queues.max_cq_depth);
 935         queue_size = RTE_MIN(queue_size,
 936                              get_feat_ctx->max_queues.max_sq_depth);
 937
 938         if (ena_dev->tx_mem_queue_type == ENA_ADMIN_PLACEMENT_POLICY_DEV)
 939                 queue_size = RTE_MIN(queue_size,
 940                                      get_feat_ctx->max_queues.max_llq_depth);
 941
 942         /* Round down to power of 2 */
 943         if (!rte_is_power_of_2(queue_size))
 944                 queue_size = rte_align32pow2(queue_size >> 1);
 945
 946         if (unlikely(queue_size == 0)) {
 947                 PMD_INIT_LOG(ERR, "Invalid queue size");
 948                 return -EFAULT;
 949         }
 950
 951         *max_tx_sgl_size = RTE_MIN(ENA_PKT_MAX_BUFS,
 952                 get_feat_ctx->max_queues.max_packet_tx_descs);
 953
 954         return queue_size;
 955 }
 956
 957 static void ena_stats_restart(struct rte_eth_dev *dev)
 958 {
 959         struct ena_adapter *adapter =
 960                 (struct ena_adapter *)(dev->data->dev_private);
 961
 962         rte_atomic64_init(&adapter->drv_stats->ierrors);
 963         rte_atomic64_init(&adapter->drv_stats->oerrors);
 964         rte_atomic64_init(&adapter->drv_stats->rx_nombuf);
 965 }
 966
 967 static int ena_stats_get(struct rte_eth_dev *dev,
 968                           struct rte_eth_stats *stats)
 969 {
 970         struct ena_admin_basic_stats ena_stats;
 971         struct ena_adapter *adapter =
 972                 (struct ena_adapter *)(dev->data->dev_private);
 973         struct ena_com_dev *ena_dev = &adapter->ena_dev;
 974         int rc;
 975
 976         if (rte_eal_process_type() != RTE_PROC_PRIMARY)
 977                 return -ENOTSUP;
 978
 979         memset(&ena_stats, 0, sizeof(ena_stats));
 980         rc = ena_com_get_dev_basic_stats(ena_dev, &ena_stats);
 981         if (unlikely(rc)) {
 982                 RTE_LOG(ERR, PMD, "Could not retrieve statistics from ENA");
 983                 return rc;
 984         }
 985
 986         /* Set of basic statistics from ENA */
 987         stats->ipackets = __MERGE_64B_H_L(ena_stats.rx_pkts_high,
 988                                           ena_stats.rx_pkts_low);
 989         stats->opackets = __MERGE_64B_H_L(ena_stats.tx_pkts_high,
 990                                           ena_stats.tx_pkts_low);
 991         stats->ibytes = __MERGE_64B_H_L(ena_stats.rx_bytes_high,
 992                                         ena_stats.rx_bytes_low);
 993         stats->obytes = __MERGE_64B_H_L(ena_stats.tx_bytes_high,
 994                                         ena_stats.tx_bytes_low);
 995         stats->imissed = __MERGE_64B_H_L(ena_stats.rx_drops_high,
 996                                          ena_stats.rx_drops_low);
 997
 998         /* Driver related stats */
 999         stats->ierrors = rte_atomic64_read(&adapter->drv_stats->ierrors);
1000         stats->oerrors = rte_atomic64_read(&adapter->drv_stats->oerrors);
1001         stats->rx_nombuf = rte_atomic64_read(&adapter->drv_stats->rx_nombuf);
1002         return 0;
1003 }
1004
1005 static int ena_mtu_set(struct rte_eth_dev *dev, uint16_t mtu)
1006 {
1007         struct ena_adapter *adapter;
1008         struct ena_com_dev *ena_dev;
1009         int rc = 0;
1010
1011         ena_assert_msg(dev->data != NULL, "Uninitialized device");
1012         ena_assert_msg(dev->data->dev_private != NULL, "Uninitialized device");
1013         adapter = (struct ena_adapter *)(dev->data->dev_private);
1014
1015         ena_dev = &adapter->ena_dev;
1016         ena_assert_msg(ena_dev != NULL, "Uninitialized device");
1017
1018         if (mtu > ena_get_mtu_conf(adapter) || mtu < ENA_MIN_MTU) {
1019                 RTE_LOG(ERR, PMD,
1020                         "Invalid MTU setting. new_mtu: %d "
1021                         "max mtu: %d min mtu: %d\n",
1022                         mtu, ena_get_mtu_conf(adapter), ENA_MIN_MTU);
1023                 return -EINVAL;
1024         }
1025
1026         rc = ena_com_set_dev_mtu(ena_dev, mtu);
1027         if (rc)
1028                 RTE_LOG(ERR, PMD, "Could not set MTU: %d\n", mtu);
1029         else
1030                 RTE_LOG(NOTICE, PMD, "Set MTU: %d\n", mtu);
1031
1032         return rc;
1033 }
1034
1035 static int ena_start(struct rte_eth_dev *dev)
1036 {
1037         struct ena_adapter *adapter =
1038                 (struct ena_adapter *)(dev->data->dev_private);
1039         uint64_t ticks;
1040         int rc = 0;
1041
1042         rc = ena_check_valid_conf(adapter);
1043         if (rc)
1044                 return rc;
1045
1046         rc = ena_queue_restart_all(dev, ENA_RING_TYPE_RX);
1047         if (rc)
1048                 return rc;
1049
1050         rc = ena_queue_restart_all(dev, ENA_RING_TYPE_TX);
1051         if (rc)
1052                 return rc;
1053
1054         if (adapter->rte_dev->data->dev_conf.rxmode.mq_mode &
1055             ETH_MQ_RX_RSS_FLAG && adapter->rte_dev->data->nb_rx_queues > 0) {
1056                 rc = ena_rss_init_default(adapter);
1057                 if (rc)
1058                         return rc;
1059         }
1060
1061         ena_stats_restart(dev);
1062
1063         adapter->timestamp_wd = rte_get_timer_cycles();
1064         adapter->keep_alive_timeout = ENA_DEVICE_KALIVE_TIMEOUT;
1065
1066         ticks = rte_get_timer_hz();
1067         rte_timer_reset(&adapter->timer_wd, ticks, PERIODICAL, rte_lcore_id(),
1068                         ena_timer_wd_callback, adapter);
1069
1070         adapter->state = ENA_ADAPTER_STATE_RUNNING;
1071
1072         return 0;
1073 }
1074
1075 static void ena_stop(struct rte_eth_dev *dev)
1076 {
1077         struct ena_adapter *adapter =
1078                 (struct ena_adapter *)(dev->data->dev_private);
1079
1080         rte_timer_stop_sync(&adapter->timer_wd);
1081
1082         adapter->state = ENA_ADAPTER_STATE_STOPPED;
1083 }
1084
1085 static int ena_queue_restart(struct ena_ring *ring)
1086 {
1087         int rc, bufs_num;
1088
1089         ena_assert_msg(ring->configured == 1,
1090                        "Trying to restart unconfigured queue\n");
1091
1092         ring->next_to_clean = 0;
1093         ring->next_to_use = 0;
1094
1095         if (ring->type == ENA_RING_TYPE_TX)
1096                 return 0;
1097
1098         bufs_num = ring->ring_size - 1;
1099         rc = ena_populate_rx_queue(ring, bufs_num);
1100         if (rc != bufs_num) {
1101                 PMD_INIT_LOG(ERR, "Failed to populate rx ring !");
1102                 return ENA_COM_FAULT;
1103         }
1104
1105         return 0;
1106 }
1107
1108 static int ena_tx_queue_setup(struct rte_eth_dev *dev,
1109                               uint16_t queue_idx,
1110                               uint16_t nb_desc,
1111                               __rte_unused unsigned int socket_id,
1112                               const struct rte_eth_txconf *tx_conf)
1113 {
1114         struct ena_com_create_io_ctx ctx =
1115                 /* policy set to _HOST just to satisfy icc compiler */
1116                 { ENA_ADMIN_PLACEMENT_POLICY_HOST,
1117                   ENA_COM_IO_QUEUE_DIRECTION_TX, 0, 0, 0, 0 };
1118         struct ena_ring *txq = NULL;
1119         struct ena_adapter *adapter =
1120                 (struct ena_adapter *)(dev->data->dev_private);
1121         unsigned int i;
1122         int ena_qid;
1123         int rc;
1124         struct ena_com_dev *ena_dev = &adapter->ena_dev;
1125
1126         txq = &adapter->tx_ring[queue_idx];
1127
1128         if (txq->configured) {
1129                 RTE_LOG(CRIT, PMD,
1130                         "API violation. Queue %d is already configured\n",
1131                         queue_idx);
1132                 return ENA_COM_FAULT;
1133         }
1134
1135         if (!rte_is_power_of_2(nb_desc)) {
1136                 RTE_LOG(ERR, PMD,
1137                         "Unsupported size of TX queue: %d is not a power of 2.",
1138                         nb_desc);
1139                 return -EINVAL;
1140         }
1141
1142         if (nb_desc > adapter->tx_ring_size) {
1143                 RTE_LOG(ERR, PMD,
1144                         "Unsupported size of TX queue (max size: %d)\n",
1145                         adapter->tx_ring_size);
1146                 return -EINVAL;
1147         }
1148
1149         ena_qid = ENA_IO_TXQ_IDX(queue_idx);
1150
1151         ctx.direction = ENA_COM_IO_QUEUE_DIRECTION_TX;
1152         ctx.qid = ena_qid;
1153         ctx.msix_vector = -1; /* admin interrupts not used */
1154         ctx.mem_queue_type = ena_dev->tx_mem_queue_type;
1155         ctx.queue_size = adapter->tx_ring_size;
1156         ctx.numa_node = ena_cpu_to_node(queue_idx);
1157
1158         rc = ena_com_create_io_queue(ena_dev, &ctx);
1159         if (rc) {
1160                 RTE_LOG(ERR, PMD,
1161                         "failed to create io TX queue #%d (qid:%d) rc: %d\n",
1162                         queue_idx, ena_qid, rc);
1163                 return rc;
1164         }
1165         txq->ena_com_io_cq = &ena_dev->io_cq_queues[ena_qid];
1166         txq->ena_com_io_sq = &ena_dev->io_sq_queues[ena_qid];
1167
1168         rc = ena_com_get_io_handlers(ena_dev, ena_qid,
1169                                      &txq->ena_com_io_sq,
1170                                      &txq->ena_com_io_cq);
1171         if (rc) {
1172                 RTE_LOG(ERR, PMD,
1173                         "Failed to get TX queue handlers. TX queue num %d rc: %d\n",
1174                         queue_idx, rc);
1175                 goto err_destroy_io_queue;
1176         }
1177
1178         ena_com_update_numa_node(txq->ena_com_io_cq, ctx.numa_node);
1179
1180         txq->port_id = dev->data->port_id;
1181         txq->next_to_clean = 0;
1182         txq->next_to_use = 0;
1183         txq->ring_size = nb_desc;
1184
1185         txq->tx_buffer_info = rte_zmalloc("txq->tx_buffer_info",
1186                                           sizeof(struct ena_tx_buffer) *
1187                                           txq->ring_size,
1188                                           RTE_CACHE_LINE_SIZE);
1189         if (!txq->tx_buffer_info) {
1190                 RTE_LOG(ERR, PMD, "failed to alloc mem for tx buffer info\n");
1191                 rc = -ENOMEM;
1192                 goto err_destroy_io_queue;
1193         }
1194
1195         txq->empty_tx_reqs = rte_zmalloc("txq->empty_tx_reqs",
1196                                          sizeof(u16) * txq->ring_size,
1197                                          RTE_CACHE_LINE_SIZE);
1198         if (!txq->empty_tx_reqs) {
1199                 RTE_LOG(ERR, PMD, "failed to alloc mem for tx reqs\n");
1200                 rc = -ENOMEM;
1201                 goto err_free;
1202         }
1203
1204         for (i = 0; i < txq->ring_size; i++)
1205                 txq->empty_tx_reqs[i] = i;
1206
1207         if (tx_conf != NULL) {
1208                 txq->offloads =
1209                         tx_conf->offloads | dev->data->dev_conf.txmode.offloads;
1210         }
1211
1212         /* Store pointer to this queue in upper layer */
1213         txq->configured = 1;
1214         dev->data->tx_queues[queue_idx] = txq;
1215
1216         return 0;
1217
1218 err_free:
1219         rte_free(txq->tx_buffer_info);
1220
1221 err_destroy_io_queue:
1222         ena_com_destroy_io_queue(ena_dev, ena_qid);
1223         return rc;
1224 }
1225
1226 static int ena_rx_queue_setup(struct rte_eth_dev *dev,
1227                               uint16_t queue_idx,
1228                               uint16_t nb_desc,
1229                               __rte_unused unsigned int socket_id,
1230                               __rte_unused const struct rte_eth_rxconf *rx_conf,
1231                               struct rte_mempool *mp)
1232 {
1233         struct ena_com_create_io_ctx ctx =
1234                 /* policy set to _HOST just to satisfy icc compiler */
1235                 { ENA_ADMIN_PLACEMENT_POLICY_HOST,
1236                   ENA_COM_IO_QUEUE_DIRECTION_RX, 0, 0, 0, 0 };
1237         struct ena_adapter *adapter =
1238                 (struct ena_adapter *)(dev->data->dev_private);
1239         struct ena_ring *rxq = NULL;
1240         uint16_t ena_qid = 0;
1241         int i, rc = 0;
1242         struct ena_com_dev *ena_dev = &adapter->ena_dev;
1243
1244         rxq = &adapter->rx_ring[queue_idx];
1245         if (rxq->configured) {
1246                 RTE_LOG(CRIT, PMD,
1247                         "API violation. Queue %d is already configured\n",
1248                         queue_idx);
1249                 return ENA_COM_FAULT;
1250         }
1251
1252         if (!rte_is_power_of_2(nb_desc)) {
1253                 RTE_LOG(ERR, PMD,
1254                         "Unsupported size of RX queue: %d is not a power of 2.",
1255                         nb_desc);
1256                 return -EINVAL;
1257         }
1258
1259         if (nb_desc > adapter->rx_ring_size) {
1260                 RTE_LOG(ERR, PMD,
1261                         "Unsupported size of RX queue (max size: %d)\n",
1262                         adapter->rx_ring_size);
1263                 return -EINVAL;
1264         }
1265
1266         ena_qid = ENA_IO_RXQ_IDX(queue_idx);
1267
1268         ctx.qid = ena_qid;
1269         ctx.direction = ENA_COM_IO_QUEUE_DIRECTION_RX;
1270         ctx.mem_queue_type = ENA_ADMIN_PLACEMENT_POLICY_HOST;
1271         ctx.msix_vector = -1; /* admin interrupts not used */
1272         ctx.queue_size = adapter->rx_ring_size;
1273         ctx.numa_node = ena_cpu_to_node(queue_idx);
1274
1275         rc = ena_com_create_io_queue(ena_dev, &ctx);
1276         if (rc) {
1277                 RTE_LOG(ERR, PMD, "failed to create io RX queue #%d rc: %d\n",
1278                         queue_idx, rc);
1279                 return rc;
1280         }
1281
1282         rxq->ena_com_io_cq = &ena_dev->io_cq_queues[ena_qid];
1283         rxq->ena_com_io_sq = &ena_dev->io_sq_queues[ena_qid];
1284
1285         rc = ena_com_get_io_handlers(ena_dev, ena_qid,
1286                                      &rxq->ena_com_io_sq,
1287                                      &rxq->ena_com_io_cq);
1288         if (rc) {
1289                 RTE_LOG(ERR, PMD,
1290                         "Failed to get RX queue handlers. RX queue num %d rc: %d\n",
1291                         queue_idx, rc);
1292                 ena_com_destroy_io_queue(ena_dev, ena_qid);
1293                 return rc;
1294         }
1295
1296         rxq->port_id = dev->data->port_id;
1297         rxq->next_to_clean = 0;
1298         rxq->next_to_use = 0;
1299         rxq->ring_size = nb_desc;
1300         rxq->mb_pool = mp;
1301
1302         rxq->rx_buffer_info = rte_zmalloc("rxq->buffer_info",
1303                                           sizeof(struct rte_mbuf *) * nb_desc,
1304                                           RTE_CACHE_LINE_SIZE);
1305         if (!rxq->rx_buffer_info) {
1306                 RTE_LOG(ERR, PMD, "failed to alloc mem for rx buffer info\n");
1307                 ena_com_destroy_io_queue(ena_dev, ena_qid);
1308                 return -ENOMEM;
1309         }
1310
1311         rxq->empty_rx_reqs = rte_zmalloc("rxq->empty_rx_reqs",
1312                                          sizeof(uint16_t) * nb_desc,
1313                                          RTE_CACHE_LINE_SIZE);
1314         if (!rxq->empty_rx_reqs) {
1315                 RTE_LOG(ERR, PMD, "failed to alloc mem for empty rx reqs\n");
1316                 rte_free(rxq->rx_buffer_info);
1317                 rxq->rx_buffer_info = NULL;
1318                 ena_com_destroy_io_queue(ena_dev, ena_qid);
1319                 return -ENOMEM;
1320         }
1321
1322         for (i = 0; i < nb_desc; i++)
1323                 rxq->empty_tx_reqs[i] = i;
1324
1325         /* Store pointer to this queue in upper layer */
1326         rxq->configured = 1;
1327         dev->data->rx_queues[queue_idx] = rxq;
1328
1329         return rc;
1330 }
1331
1332 static int ena_populate_rx_queue(struct ena_ring *rxq, unsigned int count)
1333 {
1334         unsigned int i;
1335         int rc;
1336         uint16_t ring_size = rxq->ring_size;
1337         uint16_t ring_mask = ring_size - 1;
1338         uint16_t next_to_use = rxq->next_to_use;
1339         uint16_t in_use, req_id;
1340         struct rte_mbuf **mbufs = &rxq->rx_buffer_info[0];
1341
1342         if (unlikely(!count))
1343                 return 0;
1344
1345         in_use = rxq->next_to_use - rxq->next_to_clean;
1346         ena_assert_msg(((in_use + count) < ring_size), "bad ring state");
1347
1348         count = RTE_MIN(count,
1349                         (uint16_t)(ring_size - (next_to_use & ring_mask)));
1350
1351         /* get resources for incoming packets */
1352         rc = rte_mempool_get_bulk(rxq->mb_pool,
1353                                   (void **)(&mbufs[next_to_use & ring_mask]),
1354                                   count);
1355         if (unlikely(rc < 0)) {
1356                 rte_atomic64_inc(&rxq->adapter->drv_stats->rx_nombuf);
1357                 PMD_RX_LOG(DEBUG, "there are no enough free buffers");
1358                 return 0;
1359         }
1360
1361         for (i = 0; i < count; i++) {
1362                 uint16_t next_to_use_masked = next_to_use & ring_mask;
1363                 struct rte_mbuf *mbuf = mbufs[next_to_use_masked];
1364                 struct ena_com_buf ebuf;
1365
1366                 rte_prefetch0(mbufs[((next_to_use + 4) & ring_mask)]);
1367
1368                 req_id = rxq->empty_rx_reqs[next_to_use_masked];
1369                 rc = validate_rx_req_id(rxq, req_id);
1370                 if (unlikely(rc < 0))
1371                         break;
1372
1373                 /* prepare physical address for DMA transaction */
1374                 ebuf.paddr = mbuf->buf_iova + RTE_PKTMBUF_HEADROOM;
1375                 ebuf.len = mbuf->buf_len - RTE_PKTMBUF_HEADROOM;
1376                 /* pass resource to device */
1377                 rc = ena_com_add_single_rx_desc(rxq->ena_com_io_sq,
1378                                                 &ebuf, req_id);
1379                 if (unlikely(rc)) {
1380                         rte_mempool_put_bulk(rxq->mb_pool, (void **)(&mbuf),
1381                                              count - i);
1382                         RTE_LOG(WARNING, PMD, "failed adding rx desc\n");
1383                         break;
1384                 }
1385                 next_to_use++;
1386         }
1387
1388         if (unlikely(i < count))
1389                 RTE_LOG(WARNING, PMD, "refilled rx qid %d with only %d "
1390                         "buffers (from %d)\n", rxq->id, i, count);
1391
1392         /* When we submitted free recources to device... */
1393         if (likely(i > 0)) {
1394                 /* ...let HW know that it can fill buffers with data
1395                  *
1396                  * Add memory barrier to make sure the desc were written before
1397                  * issue a doorbell
1398                  */
1399                 rte_wmb();
1400                 ena_com_write_sq_doorbell(rxq->ena_com_io_sq);
1401
1402                 rxq->next_to_use = next_to_use;
1403         }
1404
1405         return i;
1406 }
1407
1408 static int ena_device_init(struct ena_com_dev *ena_dev,
1409                            struct ena_com_dev_get_features_ctx *get_feat_ctx,
1410                            bool *wd_state)
1411 {
1412         uint32_t aenq_groups;
1413         int rc;
1414         bool readless_supported;
1415
1416         /* Initialize mmio registers */
1417         rc = ena_com_mmio_reg_read_request_init(ena_dev);
1418         if (rc) {
1419                 RTE_LOG(ERR, PMD, "failed to init mmio read less\n");
1420                 return rc;
1421         }
1422
1423         /* The PCIe configuration space revision id indicate if mmio reg
1424          * read is disabled.
1425          */
1426         readless_supported =
1427                 !(((struct rte_pci_device *)ena_dev->dmadev)->id.class_id
1428                                & ENA_MMIO_DISABLE_REG_READ);
1429         ena_com_set_mmio_read_mode(ena_dev, readless_supported);
1430
1431         /* reset device */
1432         rc = ena_com_dev_reset(ena_dev, ENA_REGS_RESET_NORMAL);
1433         if (rc) {
1434                 RTE_LOG(ERR, PMD, "cannot reset device\n");
1435                 goto err_mmio_read_less;
1436         }
1437
1438         /* check FW version */
1439         rc = ena_com_validate_version(ena_dev);
1440         if (rc) {
1441                 RTE_LOG(ERR, PMD, "device version is too low\n");
1442                 goto err_mmio_read_less;
1443         }
1444
1445         ena_dev->dma_addr_bits = ena_com_get_dma_width(ena_dev);
1446
1447         /* ENA device administration layer init */
1448         rc = ena_com_admin_init(ena_dev, &aenq_handlers, true);
1449         if (rc) {
1450                 RTE_LOG(ERR, PMD,
1451                         "cannot initialize ena admin queue with device\n");
1452                 goto err_mmio_read_less;
1453         }
1454
1455         /* To enable the msix interrupts the driver needs to know the number
1456          * of queues. So the driver uses polling mode to retrieve this
1457          * information.
1458          */
1459         ena_com_set_admin_polling_mode(ena_dev, true);
1460
1461         ena_config_host_info(ena_dev);
1462
1463         /* Get Device Attributes and features */
1464         rc = ena_com_get_dev_attr_feat(ena_dev, get_feat_ctx);
1465         if (rc) {
1466                 RTE_LOG(ERR, PMD,
1467                         "cannot get attribute for ena device rc= %d\n", rc);
1468                 goto err_admin_init;
1469         }
1470
1471         aenq_groups = BIT(ENA_ADMIN_LINK_CHANGE) |
1472                       BIT(ENA_ADMIN_NOTIFICATION) |
1473                       BIT(ENA_ADMIN_KEEP_ALIVE) |
1474                       BIT(ENA_ADMIN_FATAL_ERROR) |
1475                       BIT(ENA_ADMIN_WARNING);
1476
1477         aenq_groups &= get_feat_ctx->aenq.supported_groups;
1478         rc = ena_com_set_aenq_config(ena_dev, aenq_groups);
1479         if (rc) {
1480                 RTE_LOG(ERR, PMD, "Cannot configure aenq groups rc: %d\n", rc);
1481                 goto err_admin_init;
1482         }
1483
1484         *wd_state = !!(aenq_groups & BIT(ENA_ADMIN_KEEP_ALIVE));
1485
1486         return 0;
1487
1488 err_admin_init:
1489         ena_com_admin_destroy(ena_dev);
1490
1491 err_mmio_read_less:
1492         ena_com_mmio_reg_read_request_destroy(ena_dev);
1493
1494         return rc;
1495 }
1496
1497 static void ena_interrupt_handler_rte(void *cb_arg)
1498 {
1499         struct ena_adapter *adapter = (struct ena_adapter *)cb_arg;
1500         struct ena_com_dev *ena_dev = &adapter->ena_dev;
1501
1502         ena_com_admin_q_comp_intr_handler(ena_dev);
1503         if (likely(adapter->state != ENA_ADAPTER_STATE_CLOSED))
1504                 ena_com_aenq_intr_handler(ena_dev, adapter);
1505 }
1506
1507 static void check_for_missing_keep_alive(struct ena_adapter *adapter)
1508 {
1509         if (!adapter->wd_state)
1510                 return;
1511
1512         if (adapter->keep_alive_timeout == ENA_HW_HINTS_NO_TIMEOUT)
1513                 return;
1514
1515         if (unlikely((rte_get_timer_cycles() - adapter->timestamp_wd) >=
1516             adapter->keep_alive_timeout)) {
1517                 RTE_LOG(ERR, PMD, "Keep alive timeout\n");
1518                 adapter->reset_reason = ENA_REGS_RESET_KEEP_ALIVE_TO;
1519                 adapter->trigger_reset = true;
1520         }
1521 }
1522
1523 /* Check if admin queue is enabled */
1524 static void check_for_admin_com_state(struct ena_adapter *adapter)
1525 {
1526         if (unlikely(!ena_com_get_admin_running_state(&adapter->ena_dev))) {
1527                 RTE_LOG(ERR, PMD, "ENA admin queue is not in running state!\n");
1528                 adapter->reset_reason = ENA_REGS_RESET_ADMIN_TO;
1529                 adapter->trigger_reset = true;
1530         }
1531 }
1532
1533 static void ena_timer_wd_callback(__rte_unused struct rte_timer *timer,
1534                                   void *arg)
1535 {
1536         struct ena_adapter *adapter = (struct ena_adapter *)arg;
1537         struct rte_eth_dev *dev = adapter->rte_dev;
1538
1539         check_for_missing_keep_alive(adapter);
1540         check_for_admin_com_state(adapter);
1541
1542         if (unlikely(adapter->trigger_reset)) {
1543                 RTE_LOG(ERR, PMD, "Trigger reset is on\n");
1544                 _rte_eth_dev_callback_process(dev, RTE_ETH_EVENT_INTR_RESET,
1545                         NULL);
1546         }
1547 }
1548
1549 static int ena_calc_io_queue_num(__rte_unused struct ena_com_dev *ena_dev,
1550                                  struct ena_com_dev_get_features_ctx *get_feat_ctx)
1551 {
1552         int io_sq_num, io_cq_num, io_queue_num;
1553
1554         io_sq_num = get_feat_ctx->max_queues.max_sq_num;
1555         io_cq_num = get_feat_ctx->max_queues.max_cq_num;
1556
1557         io_queue_num = RTE_MIN(io_sq_num, io_cq_num);
1558
1559         if (unlikely(io_queue_num == 0)) {
1560                 RTE_LOG(ERR, PMD, "Number of IO queues should not be 0\n");
1561                 return -EFAULT;
1562         }
1563
1564         return io_queue_num;
1565 }
1566
1567 static int eth_ena_dev_init(struct rte_eth_dev *eth_dev)
1568 {
1569         struct rte_pci_device *pci_dev;
1570         struct rte_intr_handle *intr_handle;
1571         struct ena_adapter *adapter =
1572                 (struct ena_adapter *)(eth_dev->data->dev_private);
1573         struct ena_com_dev *ena_dev = &adapter->ena_dev;
1574         struct ena_com_dev_get_features_ctx get_feat_ctx;
1575         int queue_size, rc;
1576         u16 tx_sgl_size = 0;
1577
1578         static int adapters_found;
1579         bool wd_state;
1580
1581         memset(adapter, 0, sizeof(struct ena_adapter));
1582         ena_dev = &adapter->ena_dev;
1583
1584         eth_dev->dev_ops = &ena_dev_ops;
1585         eth_dev->rx_pkt_burst = &eth_ena_recv_pkts;
1586         eth_dev->tx_pkt_burst = &eth_ena_xmit_pkts;
1587         eth_dev->tx_pkt_prepare = &eth_ena_prep_pkts;
1588         adapter->rte_eth_dev_data = eth_dev->data;
1589         adapter->rte_dev = eth_dev;
1590
1591         if (rte_eal_process_type() != RTE_PROC_PRIMARY)
1592                 return 0;
1593
1594         pci_dev = RTE_ETH_DEV_TO_PCI(eth_dev);
1595         adapter->pdev = pci_dev;
1596
1597         PMD_INIT_LOG(INFO, "Initializing %x:%x:%x.%d",
1598                      pci_dev->addr.domain,
1599                      pci_dev->addr.bus,
1600                      pci_dev->addr.devid,
1601                      pci_dev->addr.function);
1602
1603         intr_handle = &pci_dev->intr_handle;
1604
1605         adapter->regs = pci_dev->mem_resource[ENA_REGS_BAR].addr;
1606         adapter->dev_mem_base = pci_dev->mem_resource[ENA_MEM_BAR].addr;
1607
1608         if (!adapter->regs) {
1609                 PMD_INIT_LOG(CRIT, "Failed to access registers BAR(%d)",
1610                              ENA_REGS_BAR);
1611                 return -ENXIO;
1612         }
1613
1614         ena_dev->reg_bar = adapter->regs;
1615         ena_dev->dmadev = adapter->pdev;
1616
1617         adapter->id_number = adapters_found;
1618
1619         snprintf(adapter->name, ENA_NAME_MAX_LEN, "ena_%d",
1620                  adapter->id_number);
1621
1622         /* device specific initialization routine */
1623         rc = ena_device_init(ena_dev, &get_feat_ctx, &wd_state);
1624         if (rc) {
1625                 PMD_INIT_LOG(CRIT, "Failed to init ENA device");
1626                 goto err;
1627         }
1628         adapter->wd_state = wd_state;
1629
1630         ena_dev->tx_mem_queue_type = ENA_ADMIN_PLACEMENT_POLICY_HOST;
1631         adapter->num_queues = ena_calc_io_queue_num(ena_dev,
1632                                                     &get_feat_ctx);
1633
1634         queue_size = ena_calc_queue_size(ena_dev, &tx_sgl_size, &get_feat_ctx);
1635         if (queue_size <= 0 || adapter->num_queues <= 0) {
1636                 rc = -EFAULT;
1637                 goto err_device_destroy;
1638         }
1639
1640         adapter->tx_ring_size = queue_size;
1641         adapter->rx_ring_size = queue_size;
1642
1643         adapter->max_tx_sgl_size = tx_sgl_size;
1644
1645         /* prepare ring structures */
1646         ena_init_rings(adapter);
1647
1648         ena_config_debug_area(adapter);
1649
1650         /* Set max MTU for this device */
1651         adapter->max_mtu = get_feat_ctx.dev_attr.max_mtu;
1652
1653         /* set device support for TSO */
1654         adapter->tso4_supported = get_feat_ctx.offload.tx &
1655                                   ENA_ADMIN_FEATURE_OFFLOAD_DESC_TSO_IPV4_MASK;
1656
1657         /* Copy MAC address and point DPDK to it */
1658         eth_dev->data->mac_addrs = (struct ether_addr *)adapter->mac_addr;
1659         ether_addr_copy((struct ether_addr *)get_feat_ctx.dev_attr.mac_addr,
1660                         (struct ether_addr *)adapter->mac_addr);
1661
1662         adapter->drv_stats = rte_zmalloc("adapter stats",
1663                                          sizeof(*adapter->drv_stats),
1664                                          RTE_CACHE_LINE_SIZE);
1665         if (!adapter->drv_stats) {
1666                 RTE_LOG(ERR, PMD, "failed to alloc mem for adapter stats\n");
1667                 rc = -ENOMEM;
1668                 goto err_delete_debug_area;
1669         }
1670
1671         rte_intr_callback_register(intr_handle,
1672                                    ena_interrupt_handler_rte,
1673                                    adapter);
1674         rte_intr_enable(intr_handle);
1675         ena_com_set_admin_polling_mode(ena_dev, false);
1676         ena_com_admin_aenq_enable(ena_dev);
1677
1678         if (adapters_found == 0)
1679                 rte_timer_subsystem_init();
1680         rte_timer_init(&adapter->timer_wd);
1681
1682         adapters_found++;
1683         adapter->state = ENA_ADAPTER_STATE_INIT;
1684
1685         return 0;
1686
1687 err_delete_debug_area:
1688         ena_com_delete_debug_area(ena_dev);
1689
1690 err_device_destroy:
1691         ena_com_delete_host_info(ena_dev);
1692         ena_com_admin_destroy(ena_dev);
1693
1694 err:
1695         return rc;
1696 }
1697
1698 static int eth_ena_dev_uninit(struct rte_eth_dev *eth_dev)
1699 {
1700         struct rte_pci_device *pci_dev = RTE_ETH_DEV_TO_PCI(eth_dev);
1701         struct rte_intr_handle *intr_handle = &pci_dev->intr_handle;
1702         struct ena_adapter *adapter =
1703                 (struct ena_adapter *)(eth_dev->data->dev_private);
1704
1705         if (rte_eal_process_type() != RTE_PROC_PRIMARY)
1706                 return -EPERM;
1707
1708         if (adapter->state != ENA_ADAPTER_STATE_CLOSED)
1709                 ena_close(eth_dev);
1710
1711         eth_dev->dev_ops = NULL;
1712         eth_dev->rx_pkt_burst = NULL;
1713         eth_dev->tx_pkt_burst = NULL;
1714         eth_dev->tx_pkt_prepare = NULL;
1715
1716         rte_free(adapter->drv_stats);
1717         adapter->drv_stats = NULL;
1718
1719         rte_intr_disable(intr_handle);
1720         rte_intr_callback_unregister(intr_handle,
1721                                      ena_interrupt_handler_rte,
1722                                      adapter);
1723
1724         adapter->state = ENA_ADAPTER_STATE_FREE;
1725
1726         return 0;
1727 }
1728
1729 static int ena_dev_configure(struct rte_eth_dev *dev)
1730 {
1731         struct ena_adapter *adapter =
1732                 (struct ena_adapter *)(dev->data->dev_private);
1733
1734         adapter->state = ENA_ADAPTER_STATE_CONFIG;
1735
1736         adapter->tx_selected_offloads = dev->data->dev_conf.txmode.offloads;
1737         adapter->rx_selected_offloads = dev->data->dev_conf.rxmode.offloads;
1738         return 0;
1739 }
1740
1741 static void ena_init_rings(struct ena_adapter *adapter)
1742 {
1743         int i;
1744
1745         for (i = 0; i < adapter->num_queues; i++) {
1746                 struct ena_ring *ring = &adapter->tx_ring[i];
1747
1748                 ring->configured = 0;
1749                 ring->type = ENA_RING_TYPE_TX;
1750                 ring->adapter = adapter;
1751                 ring->id = i;
1752                 ring->tx_mem_queue_type = adapter->ena_dev.tx_mem_queue_type;
1753                 ring->tx_max_header_size = adapter->ena_dev.tx_max_header_size;
1754                 ring->sgl_size = adapter->max_tx_sgl_size;
1755         }
1756
1757         for (i = 0; i < adapter->num_queues; i++) {
1758                 struct ena_ring *ring = &adapter->rx_ring[i];
1759
1760                 ring->configured = 0;
1761                 ring->type = ENA_RING_TYPE_RX;
1762                 ring->adapter = adapter;
1763                 ring->id = i;
1764         }
1765 }
1766
1767 static void ena_infos_get(struct rte_eth_dev *dev,
1768                           struct rte_eth_dev_info *dev_info)
1769 {
1770         struct ena_adapter *adapter;
1771         struct ena_com_dev *ena_dev;
1772         struct ena_com_dev_get_features_ctx feat;
1773         uint64_t rx_feat = 0, tx_feat = 0;
1774         int rc = 0;
1775
1776         ena_assert_msg(dev->data != NULL, "Uninitialized device");
1777         ena_assert_msg(dev->data->dev_private != NULL, "Uninitialized device");
1778         adapter = (struct ena_adapter *)(dev->data->dev_private);
1779
1780         ena_dev = &adapter->ena_dev;
1781         ena_assert_msg(ena_dev != NULL, "Uninitialized device");
1782
1783         dev_info->speed_capa =
1784                         ETH_LINK_SPEED_1G   |
1785                         ETH_LINK_SPEED_2_5G |
1786                         ETH_LINK_SPEED_5G   |
1787                         ETH_LINK_SPEED_10G  |
1788                         ETH_LINK_SPEED_25G  |
1789                         ETH_LINK_SPEED_40G  |
1790                         ETH_LINK_SPEED_50G  |
1791                         ETH_LINK_SPEED_100G;
1792
1793         /* Get supported features from HW */
1794         rc = ena_com_get_dev_attr_feat(ena_dev, &feat);
1795         if (unlikely(rc)) {
1796                 RTE_LOG(ERR, PMD,
1797                         "Cannot get attribute for ena device rc= %d\n", rc);
1798                 return;
1799         }
1800
1801         /* Set Tx & Rx features available for device */
1802         if (feat.offload.tx & ENA_ADMIN_FEATURE_OFFLOAD_DESC_TSO_IPV4_MASK)
1803                 tx_feat |= DEV_TX_OFFLOAD_TCP_TSO;
1804
1805         if (feat.offload.tx &
1806             ENA_ADMIN_FEATURE_OFFLOAD_DESC_TX_L4_IPV4_CSUM_PART_MASK)
1807                 tx_feat |= DEV_TX_OFFLOAD_IPV4_CKSUM |
1808                         DEV_TX_OFFLOAD_UDP_CKSUM |
1809                         DEV_TX_OFFLOAD_TCP_CKSUM;
1810
1811         if (feat.offload.rx_supported &
1812             ENA_ADMIN_FEATURE_OFFLOAD_DESC_RX_L4_IPV4_CSUM_MASK)
1813                 rx_feat |= DEV_RX_OFFLOAD_IPV4_CKSUM |
1814                         DEV_RX_OFFLOAD_UDP_CKSUM  |
1815                         DEV_RX_OFFLOAD_TCP_CKSUM;
1816
1817         rx_feat |= DEV_RX_OFFLOAD_JUMBO_FRAME;
1818
1819         /* Inform framework about available features */
1820         dev_info->rx_offload_capa = rx_feat;
1821         dev_info->rx_queue_offload_capa = rx_feat;
1822         dev_info->tx_offload_capa = tx_feat;
1823         dev_info->tx_queue_offload_capa = tx_feat;
1824
1825         dev_info->min_rx_bufsize = ENA_MIN_FRAME_LEN;
1826         dev_info->max_rx_pktlen  = adapter->max_mtu;
1827         dev_info->max_mac_addrs = 1;
1828
1829         dev_info->max_rx_queues = adapter->num_queues;
1830         dev_info->max_tx_queues = adapter->num_queues;
1831         dev_info->reta_size = ENA_RX_RSS_TABLE_SIZE;
1832
1833         adapter->tx_supported_offloads = tx_feat;
1834         adapter->rx_supported_offloads = rx_feat;
1835
1836         dev_info->rx_desc_lim.nb_max = ENA_MAX_RING_DESC;
1837         dev_info->rx_desc_lim.nb_min = ENA_MIN_RING_DESC;
1838
1839         dev_info->tx_desc_lim.nb_max = ENA_MAX_RING_DESC;
1840         dev_info->tx_desc_lim.nb_min = ENA_MIN_RING_DESC;
1841         dev_info->tx_desc_lim.nb_seg_max = RTE_MIN(ENA_PKT_MAX_BUFS,
1842                                         feat.max_queues.max_packet_tx_descs);
1843         dev_info->tx_desc_lim.nb_mtu_seg_max = RTE_MIN(ENA_PKT_MAX_BUFS,
1844                                         feat.max_queues.max_packet_tx_descs);
1845 }
1846
1847 static uint16_t eth_ena_recv_pkts(void *rx_queue, struct rte_mbuf **rx_pkts,
1848                                   uint16_t nb_pkts)
1849 {
1850         struct ena_ring *rx_ring = (struct ena_ring *)(rx_queue);
1851         unsigned int ring_size = rx_ring->ring_size;
1852         unsigned int ring_mask = ring_size - 1;
1853         uint16_t next_to_clean = rx_ring->next_to_clean;
1854         uint16_t desc_in_use = 0;
1855         uint16_t req_id;
1856         unsigned int recv_idx = 0;
1857         struct rte_mbuf *mbuf = NULL;
1858         struct rte_mbuf *mbuf_head = NULL;
1859         struct rte_mbuf *mbuf_prev = NULL;
1860         struct rte_mbuf **rx_buff_info = rx_ring->rx_buffer_info;
1861         unsigned int completed;
1862
1863         struct ena_com_rx_ctx ena_rx_ctx;
1864         int rc = 0;
1865
1866         /* Check adapter state */
1867         if (unlikely(rx_ring->adapter->state != ENA_ADAPTER_STATE_RUNNING)) {
1868                 RTE_LOG(ALERT, PMD,
1869                         "Trying to receive pkts while device is NOT running\n");
1870                 return 0;
1871         }
1872
1873         desc_in_use = rx_ring->next_to_use - next_to_clean;
1874         if (unlikely(nb_pkts > desc_in_use))
1875                 nb_pkts = desc_in_use;
1876
1877         for (completed = 0; completed < nb_pkts; completed++) {
1878                 int segments = 0;
1879
1880                 ena_rx_ctx.max_bufs = rx_ring->ring_size;
1881                 ena_rx_ctx.ena_bufs = rx_ring->ena_bufs;
1882                 ena_rx_ctx.descs = 0;
1883                 /* receive packet context */
1884                 rc = ena_com_rx_pkt(rx_ring->ena_com_io_cq,
1885                                     rx_ring->ena_com_io_sq,
1886                                     &ena_rx_ctx);
1887                 if (unlikely(rc)) {
1888                         RTE_LOG(ERR, PMD, "ena_com_rx_pkt error %d\n", rc);
1889                         rx_ring->adapter->trigger_reset = true;
1890                         return 0;
1891                 }
1892
1893                 if (unlikely(ena_rx_ctx.descs == 0))
1894                         break;
1895
1896                 while (segments < ena_rx_ctx.descs) {
1897                         req_id = ena_rx_ctx.ena_bufs[segments].req_id;
1898                         rc = validate_rx_req_id(rx_ring, req_id);
1899                         if (unlikely(rc))
1900                                 break;
1901
1902                         mbuf = rx_buff_info[req_id];
1903                         mbuf->data_len = ena_rx_ctx.ena_bufs[segments].len;
1904                         mbuf->data_off = RTE_PKTMBUF_HEADROOM;
1905                         mbuf->refcnt = 1;
1906                         mbuf->next = NULL;
1907                         if (unlikely(segments == 0)) {
1908                                 mbuf->nb_segs = ena_rx_ctx.descs;
1909                                 mbuf->port = rx_ring->port_id;
1910                                 mbuf->pkt_len = 0;
1911                                 mbuf_head = mbuf;
1912                         } else {
1913                                 /* for multi-segment pkts create mbuf chain */
1914                                 mbuf_prev->next = mbuf;
1915                         }
1916                         mbuf_head->pkt_len += mbuf->data_len;
1917
1918                         mbuf_prev = mbuf;
1919                         rx_ring->empty_rx_reqs[next_to_clean & ring_mask] =
1920                                 req_id;
1921                         segments++;
1922                         next_to_clean++;
1923                 }
1924
1925                 /* fill mbuf attributes if any */
1926                 ena_rx_mbuf_prepare(mbuf_head, &ena_rx_ctx);
1927                 mbuf_head->hash.rss = (uint32_t)rx_ring->id;
1928
1929                 /* pass to DPDK application head mbuf */
1930                 rx_pkts[recv_idx] = mbuf_head;
1931                 recv_idx++;
1932         }
1933
1934         rx_ring->next_to_clean = next_to_clean;
1935
1936         desc_in_use = desc_in_use - completed + 1;
1937         /* Burst refill to save doorbells, memory barriers, const interval */
1938         if (ring_size - desc_in_use > ENA_RING_DESCS_RATIO(ring_size))
1939                 ena_populate_rx_queue(rx_ring, ring_size - desc_in_use);
1940
1941         return recv_idx;
1942 }
1943
1944 static uint16_t
1945 eth_ena_prep_pkts(void *tx_queue, struct rte_mbuf **tx_pkts,
1946                 uint16_t nb_pkts)
1947 {
1948         int32_t ret;
1949         uint32_t i;
1950         struct rte_mbuf *m;
1951         struct ena_ring *tx_ring = (struct ena_ring *)(tx_queue);
1952         struct ipv4_hdr *ip_hdr;
1953         uint64_t ol_flags;
1954         uint16_t frag_field;
1955
1956         for (i = 0; i != nb_pkts; i++) {
1957                 m = tx_pkts[i];
1958                 ol_flags = m->ol_flags;
1959
1960                 if (!(ol_flags & PKT_TX_IPV4))
1961                         continue;
1962
1963                 /* If there was not L2 header length specified, assume it is
1964                  * length of the ethernet header.
1965                  */
1966                 if (unlikely(m->l2_len == 0))
1967                         m->l2_len = sizeof(struct ether_hdr);
1968
1969                 ip_hdr = rte_pktmbuf_mtod_offset(m, struct ipv4_hdr *,
1970                                                  m->l2_len);
1971                 frag_field = rte_be_to_cpu_16(ip_hdr->fragment_offset);
1972
1973                 if ((frag_field & IPV4_HDR_DF_FLAG) != 0) {
1974                         m->packet_type |= RTE_PTYPE_L4_NONFRAG;
1975
1976                         /* If IPv4 header has DF flag enabled and TSO support is
1977                          * disabled, partial chcecksum should not be calculated.
1978                          */
1979                         if (!tx_ring->adapter->tso4_supported)
1980                                 continue;
1981                 }
1982
1983                 if ((ol_flags & ENA_TX_OFFLOAD_NOTSUP_MASK) != 0 ||
1984                                 (ol_flags & PKT_TX_L4_MASK) ==
1985                                 PKT_TX_SCTP_CKSUM) {
1986                         rte_errno = -ENOTSUP;
1987                         return i;
1988                 }
1989
1990 #ifdef RTE_LIBRTE_ETHDEV_DEBUG
1991                 ret = rte_validate_tx_offload(m);
1992                 if (ret != 0) {
1993                         rte_errno = ret;
1994                         return i;
1995                 }
1996 #endif
1997
1998                 /* In case we are supposed to TSO and have DF not set (DF=0)
1999                  * hardware must be provided with partial checksum, otherwise
2000                  * it will take care of necessary calculations.
2001                  */
2002
2003                 ret = rte_net_intel_cksum_flags_prepare(m,
2004                         ol_flags & ~PKT_TX_TCP_SEG);
2005                 if (ret != 0) {
2006                         rte_errno = ret;
2007                         return i;
2008                 }
2009         }
2010
2011         return i;
2012 }
2013
2014 static void ena_update_hints(struct ena_adapter *adapter,
2015                              struct ena_admin_ena_hw_hints *hints)
2016 {
2017         if (hints->admin_completion_tx_timeout)
2018                 adapter->ena_dev.admin_queue.completion_timeout =
2019                         hints->admin_completion_tx_timeout * 1000;
2020
2021         if (hints->mmio_read_timeout)
2022                 /* convert to usec */
2023                 adapter->ena_dev.mmio_read.reg_read_to =
2024                         hints->mmio_read_timeout * 1000;
2025
2026         if (hints->driver_watchdog_timeout) {
2027                 if (hints->driver_watchdog_timeout == ENA_HW_HINTS_NO_TIMEOUT)
2028                         adapter->keep_alive_timeout = ENA_HW_HINTS_NO_TIMEOUT;
2029                 else
2030                         // Convert msecs to ticks
2031                         adapter->keep_alive_timeout =
2032                                 (hints->driver_watchdog_timeout *
2033                                 rte_get_timer_hz()) / 1000;
2034         }
2035 }
2036
2037 static int ena_check_and_linearize_mbuf(struct ena_ring *tx_ring,
2038                                         struct rte_mbuf *mbuf)
2039 {
2040         int num_segments, rc;
2041
2042         num_segments = mbuf->nb_segs;
2043
2044         if (likely(num_segments < tx_ring->sgl_size))
2045                 return 0;
2046
2047         rc = rte_pktmbuf_linearize(mbuf);
2048         if (unlikely(rc))
2049                 RTE_LOG(WARNING, PMD, "Mbuf linearize failed\n");
2050
2051         return rc;
2052 }
2053
2054 static uint16_t eth_ena_xmit_pkts(void *tx_queue, struct rte_mbuf **tx_pkts,
2055                                   uint16_t nb_pkts)
2056 {
2057         struct ena_ring *tx_ring = (struct ena_ring *)(tx_queue);
2058         uint16_t next_to_use = tx_ring->next_to_use;
2059         uint16_t next_to_clean = tx_ring->next_to_clean;
2060         struct rte_mbuf *mbuf;
2061         unsigned int ring_size = tx_ring->ring_size;
2062         unsigned int ring_mask = ring_size - 1;
2063         struct ena_com_tx_ctx ena_tx_ctx;
2064         struct ena_tx_buffer *tx_info;
2065         struct ena_com_buf *ebuf;
2066         uint16_t rc, req_id, total_tx_descs = 0;
2067         uint16_t sent_idx = 0, empty_tx_reqs;
2068         int nb_hw_desc;
2069
2070         /* Check adapter state */
2071         if (unlikely(tx_ring->adapter->state != ENA_ADAPTER_STATE_RUNNING)) {
2072                 RTE_LOG(ALERT, PMD,
2073                         "Trying to xmit pkts while device is NOT running\n");
2074                 return 0;
2075         }
2076
2077         empty_tx_reqs = ring_size - (next_to_use - next_to_clean);
2078         if (nb_pkts > empty_tx_reqs)
2079                 nb_pkts = empty_tx_reqs;
2080
2081         for (sent_idx = 0; sent_idx < nb_pkts; sent_idx++) {
2082                 mbuf = tx_pkts[sent_idx];
2083
2084                 rc = ena_check_and_linearize_mbuf(tx_ring, mbuf);
2085                 if (unlikely(rc))
2086                         break;
2087
2088                 req_id = tx_ring->empty_tx_reqs[next_to_use & ring_mask];
2089                 tx_info = &tx_ring->tx_buffer_info[req_id];
2090                 tx_info->mbuf = mbuf;
2091                 tx_info->num_of_bufs = 0;
2092                 ebuf = tx_info->bufs;
2093
2094                 /* Prepare TX context */
2095                 memset(&ena_tx_ctx, 0x0, sizeof(struct ena_com_tx_ctx));
2096                 memset(&ena_tx_ctx.ena_meta, 0x0,
2097                        sizeof(struct ena_com_tx_meta));
2098                 ena_tx_ctx.ena_bufs = ebuf;
2099                 ena_tx_ctx.req_id = req_id;
2100                 if (tx_ring->tx_mem_queue_type ==
2101                                 ENA_ADMIN_PLACEMENT_POLICY_DEV) {
2102                         /* prepare the push buffer with
2103                          * virtual address of the data
2104                          */
2105                         ena_tx_ctx.header_len =
2106                                 RTE_MIN(mbuf->data_len,
2107                                         tx_ring->tx_max_header_size);
2108                         ena_tx_ctx.push_header =
2109                                 (void *)((char *)mbuf->buf_addr +
2110                                          mbuf->data_off);
2111                 } /* there's no else as we take advantage of memset zeroing */
2112
2113                 /* Set TX offloads flags, if applicable */
2114                 ena_tx_mbuf_prepare(mbuf, &ena_tx_ctx, tx_ring->offloads);
2115
2116                 if (unlikely(mbuf->ol_flags &
2117                              (PKT_RX_L4_CKSUM_BAD | PKT_RX_IP_CKSUM_BAD)))
2118                         rte_atomic64_inc(&tx_ring->adapter->drv_stats->ierrors);
2119
2120                 rte_prefetch0(tx_pkts[(sent_idx + 4) & ring_mask]);
2121
2122                 /* Process first segment taking into
2123                  * consideration pushed header
2124                  */
2125                 if (mbuf->data_len > ena_tx_ctx.header_len) {
2126                         ebuf->paddr = mbuf->buf_iova +
2127                                       mbuf->data_off +
2128                                       ena_tx_ctx.header_len;
2129                         ebuf->len = mbuf->data_len - ena_tx_ctx.header_len;
2130                         ebuf++;
2131                         tx_info->num_of_bufs++;
2132                 }
2133
2134                 while ((mbuf = mbuf->next) != NULL) {
2135                         ebuf->paddr = mbuf->buf_iova + mbuf->data_off;
2136                         ebuf->len = mbuf->data_len;
2137                         ebuf++;
2138                         tx_info->num_of_bufs++;
2139                 }
2140
2141                 ena_tx_ctx.num_bufs = tx_info->num_of_bufs;
2142
2143                 /* Write data to device */
2144                 rc = ena_com_prepare_tx(tx_ring->ena_com_io_sq,
2145                                         &ena_tx_ctx, &nb_hw_desc);
2146                 if (unlikely(rc))
2147                         break;
2148
2149                 tx_info->tx_descs = nb_hw_desc;
2150
2151                 next_to_use++;
2152         }
2153
2154         /* If there are ready packets to be xmitted... */
2155         if (sent_idx > 0) {
2156                 /* ...let HW do its best :-) */
2157                 rte_wmb();
2158                 ena_com_write_sq_doorbell(tx_ring->ena_com_io_sq);
2159
2160                 tx_ring->next_to_use = next_to_use;
2161         }
2162
2163         /* Clear complete packets  */
2164         while (ena_com_tx_comp_req_id_get(tx_ring->ena_com_io_cq, &req_id) >= 0) {
2165                 rc = validate_tx_req_id(tx_ring, req_id);
2166                 if (rc)
2167                         break;
2168
2169                 /* Get Tx info & store how many descs were processed  */
2170                 tx_info = &tx_ring->tx_buffer_info[req_id];
2171                 total_tx_descs += tx_info->tx_descs;
2172
2173                 /* Free whole mbuf chain  */
2174                 mbuf = tx_info->mbuf;
2175                 rte_pktmbuf_free(mbuf);
2176                 tx_info->mbuf = NULL;
2177
2178                 /* Put back descriptor to the ring for reuse */
2179                 tx_ring->empty_tx_reqs[next_to_clean & ring_mask] = req_id;
2180                 next_to_clean++;
2181
2182                 /* If too many descs to clean, leave it for another run */
2183                 if (unlikely(total_tx_descs > ENA_RING_DESCS_RATIO(ring_size)))
2184                         break;
2185         }
2186
2187         if (total_tx_descs > 0) {
2188                 /* acknowledge completion of sent packets */
2189                 ena_com_comp_ack(tx_ring->ena_com_io_sq, total_tx_descs);
2190                 tx_ring->next_to_clean = next_to_clean;
2191         }
2192
2193         return sent_idx;
2194 }
2195
2196 /*********************************************************************
2197  *  PMD configuration
2198  *********************************************************************/
2199 static int eth_ena_pci_probe(struct rte_pci_driver *pci_drv __rte_unused,
2200         struct rte_pci_device *pci_dev)
2201 {
2202         return rte_eth_dev_pci_generic_probe(pci_dev,
2203                 sizeof(struct ena_adapter), eth_ena_dev_init);
2204 }
2205
2206 static int eth_ena_pci_remove(struct rte_pci_device *pci_dev)
2207 {
2208         return rte_eth_dev_pci_generic_remove(pci_dev, eth_ena_dev_uninit);
2209 }
2210
2211 static struct rte_pci_driver rte_ena_pmd = {
2212         .id_table = pci_id_ena_map,
2213         .drv_flags = RTE_PCI_DRV_NEED_MAPPING | RTE_PCI_DRV_INTR_LSC |
2214                      RTE_PCI_DRV_WC_ACTIVATE,
2215         .probe = eth_ena_pci_probe,
2216         .remove = eth_ena_pci_remove,
2217 };
2218
2219 RTE_PMD_REGISTER_PCI(net_ena, rte_ena_pmd);
2220 RTE_PMD_REGISTER_PCI_TABLE(net_ena, pci_id_ena_map);
2221 RTE_PMD_REGISTER_KMOD_DEP(net_ena, "* igb_uio | uio_pci_generic | vfio-pci");
2222
2223 RTE_INIT(ena_init_log)
2224 {
2225         ena_logtype_init = rte_log_register("pmd.net.ena.init");
2226         if (ena_logtype_init >= 0)
2227                 rte_log_set_level(ena_logtype_init, RTE_LOG_NOTICE);
2228         ena_logtype_driver = rte_log_register("pmd.net.ena.driver");
2229         if (ena_logtype_driver >= 0)
2230                 rte_log_set_level(ena_logtype_driver, RTE_LOG_NOTICE);
2231 }
2232
2233 /******************************************************************************
2234  ******************************** AENQ Handlers *******************************
2235  *****************************************************************************/
2236 static void ena_update_on_link_change(void *adapter_data,
2237                                       struct ena_admin_aenq_entry *aenq_e)
2238 {
2239         struct rte_eth_dev *eth_dev;
2240         struct ena_adapter *adapter;
2241         struct ena_admin_aenq_link_change_desc *aenq_link_desc;
2242         uint32_t status;
2243
2244         adapter = (struct ena_adapter *)adapter_data;
2245         aenq_link_desc = (struct ena_admin_aenq_link_change_desc *)aenq_e;
2246         eth_dev = adapter->rte_dev;
2247
2248         status = get_ena_admin_aenq_link_change_desc_link_status(aenq_link_desc);
2249         adapter->link_status = status;
2250
2251         ena_link_update(eth_dev, 0);
2252         _rte_eth_dev_callback_process(eth_dev, RTE_ETH_EVENT_INTR_LSC, NULL);
2253 }
2254
2255 static void ena_notification(void *data,
2256                              struct ena_admin_aenq_entry *aenq_e)
2257 {
2258         struct ena_adapter *adapter = (struct ena_adapter *)data;
2259         struct ena_admin_ena_hw_hints *hints;
2260
2261         if (aenq_e->aenq_common_desc.group != ENA_ADMIN_NOTIFICATION)
2262                 RTE_LOG(WARNING, PMD, "Invalid group(%x) expected %x\n",
2263                         aenq_e->aenq_common_desc.group,
2264                         ENA_ADMIN_NOTIFICATION);
2265
2266         switch (aenq_e->aenq_common_desc.syndrom) {
2267         case ENA_ADMIN_UPDATE_HINTS:
2268                 hints = (struct ena_admin_ena_hw_hints *)
2269                         (&aenq_e->inline_data_w4);
2270                 ena_update_hints(adapter, hints);
2271                 break;
2272         default:
2273                 RTE_LOG(ERR, PMD, "Invalid aenq notification link state %d\n",
2274                         aenq_e->aenq_common_desc.syndrom);
2275         }
2276 }
2277
2278 static void ena_keep_alive(void *adapter_data,
2279                            __rte_unused struct ena_admin_aenq_entry *aenq_e)
2280 {
2281         struct ena_adapter *adapter = (struct ena_adapter *)adapter_data;
2282
2283         adapter->timestamp_wd = rte_get_timer_cycles();
2284 }
2285
2286 /**
2287  * This handler will called for unknown event group or unimplemented handlers
2288  **/
2289 static void unimplemented_aenq_handler(__rte_unused void *data,
2290                                        __rte_unused struct ena_admin_aenq_entry *aenq_e)
2291 {
2292         RTE_LOG(ERR, PMD, "Unknown event was received or event with "
2293                           "unimplemented handler\n");
2294 }
2295
2296 static struct ena_aenq_handlers aenq_handlers = {
2297         .handlers = {
2298                 [ENA_ADMIN_LINK_CHANGE] = ena_update_on_link_change,
2299                 [ENA_ADMIN_NOTIFICATION] = ena_notification,
2300                 [ENA_ADMIN_KEEP_ALIVE] = ena_keep_alive
2301         },
2302         .unimplemented_handler = unimplemented_aenq_handler
2303 };