drivers/net/sfc/base/efx_rx.c

   1 /* SPDX-License-Identifier: BSD-3-Clause
   2  *
   3  * Copyright (c) 2007-2018 Solarflare Communications Inc.
   4  * All rights reserved.
   5  */
   6
   7 #include "efx.h"
   8 #include "efx_impl.h"
   9
  10
  11 #if EFSYS_OPT_SIENA
  12
  13 static  __checkReturn   efx_rc_t
  14 siena_rx_init(
  15         __in            efx_nic_t *enp);
  16
  17 static                  void
  18 siena_rx_fini(
  19         __in            efx_nic_t *enp);
  20
  21 #if EFSYS_OPT_RX_SCATTER
  22 static  __checkReturn   efx_rc_t
  23 siena_rx_scatter_enable(
  24         __in            efx_nic_t *enp,
  25         __in            unsigned int buf_size);
  26 #endif /* EFSYS_OPT_RX_SCATTER */
  27
  28 #if EFSYS_OPT_RX_SCALE
  29 static  __checkReturn   efx_rc_t
  30 siena_rx_scale_mode_set(
  31         __in            efx_nic_t *enp,
  32         __in            uint32_t rss_context,
  33         __in            efx_rx_hash_alg_t alg,
  34         __in            efx_rx_hash_type_t type,
  35         __in            boolean_t insert);
  36
  37 static  __checkReturn   efx_rc_t
  38 siena_rx_scale_key_set(
  39         __in            efx_nic_t *enp,
  40         __in            uint32_t rss_context,
  41         __in_ecount(n)  uint8_t *key,
  42         __in            size_t n);
  43
  44 static  __checkReturn   efx_rc_t
  45 siena_rx_scale_tbl_set(
  46         __in            efx_nic_t *enp,
  47         __in            uint32_t rss_context,
  48         __in_ecount(n)  unsigned int *table,
  49         __in            size_t n);
  50
  51 static  __checkReturn   uint32_t
  52 siena_rx_prefix_hash(
  53         __in            efx_nic_t *enp,
  54         __in            efx_rx_hash_alg_t func,
  55         __in            uint8_t *buffer);
  56
  57 #endif /* EFSYS_OPT_RX_SCALE */
  58
  59 static  __checkReturn   efx_rc_t
  60 siena_rx_prefix_pktlen(
  61         __in            efx_nic_t *enp,
  62         __in            uint8_t *buffer,
  63         __out           uint16_t *lengthp);
  64
  65 static                          void
  66 siena_rx_qpost(
  67         __in                    efx_rxq_t *erp,
  68         __in_ecount(ndescs)     efsys_dma_addr_t *addrp,
  69         __in                    size_t size,
  70         __in                    unsigned int ndescs,
  71         __in                    unsigned int completed,
  72         __in                    unsigned int added);
  73
  74 static                  void
  75 siena_rx_qpush(
  76         __in            efx_rxq_t *erp,
  77         __in            unsigned int added,
  78         __inout         unsigned int *pushedp);
  79
  80 #if EFSYS_OPT_RX_PACKED_STREAM
  81 static          void
  82 siena_rx_qpush_ps_credits(
  83         __in            efx_rxq_t *erp);
  84
  85 static  __checkReturn   uint8_t *
  86 siena_rx_qps_packet_info(
  87         __in            efx_rxq_t *erp,
  88         __in            uint8_t *buffer,
  89         __in            uint32_t buffer_length,
  90         __in            uint32_t current_offset,
  91         __out           uint16_t *lengthp,
  92         __out           uint32_t *next_offsetp,
  93         __out           uint32_t *timestamp);
  94 #endif
  95
  96 static  __checkReturn   efx_rc_t
  97 siena_rx_qflush(
  98         __in            efx_rxq_t *erp);
  99
 100 static                  void
 101 siena_rx_qenable(
 102         __in            efx_rxq_t *erp);
 103
 104 static  __checkReturn   efx_rc_t
 105 siena_rx_qcreate(
 106         __in            efx_nic_t *enp,
 107         __in            unsigned int index,
 108         __in            unsigned int label,
 109         __in            efx_rxq_type_t type,
 110         __in            const efx_rxq_type_data_t *type_data,
 111         __in            efsys_mem_t *esmp,
 112         __in            size_t ndescs,
 113         __in            uint32_t id,
 114         __in            unsigned int flags,
 115         __in            efx_evq_t *eep,
 116         __in            efx_rxq_t *erp);
 117
 118 static                  void
 119 siena_rx_qdestroy(
 120         __in            efx_rxq_t *erp);
 121
 122 #endif /* EFSYS_OPT_SIENA */
 123
 124
 125 #if EFSYS_OPT_SIENA
 126 static const efx_rx_ops_t __efx_rx_siena_ops = {
 127         siena_rx_init,                          /* erxo_init */
 128         siena_rx_fini,                          /* erxo_fini */
 129 #if EFSYS_OPT_RX_SCATTER
 130         siena_rx_scatter_enable,                /* erxo_scatter_enable */
 131 #endif
 132 #if EFSYS_OPT_RX_SCALE
 133         NULL,                                   /* erxo_scale_context_alloc */
 134         NULL,                                   /* erxo_scale_context_free */
 135         siena_rx_scale_mode_set,                /* erxo_scale_mode_set */
 136         siena_rx_scale_key_set,                 /* erxo_scale_key_set */
 137         siena_rx_scale_tbl_set,                 /* erxo_scale_tbl_set */
 138         siena_rx_prefix_hash,                   /* erxo_prefix_hash */
 139 #endif
 140         siena_rx_prefix_pktlen,                 /* erxo_prefix_pktlen */
 141         siena_rx_qpost,                         /* erxo_qpost */
 142         siena_rx_qpush,                         /* erxo_qpush */
 143 #if EFSYS_OPT_RX_PACKED_STREAM
 144         siena_rx_qpush_ps_credits,              /* erxo_qpush_ps_credits */
 145         siena_rx_qps_packet_info,               /* erxo_qps_packet_info */
 146 #endif
 147         siena_rx_qflush,                        /* erxo_qflush */
 148         siena_rx_qenable,                       /* erxo_qenable */
 149         siena_rx_qcreate,                       /* erxo_qcreate */
 150         siena_rx_qdestroy,                      /* erxo_qdestroy */
 151 };
 152 #endif  /* EFSYS_OPT_SIENA */
 153
 154 #if EFSYS_OPT_HUNTINGTON || EFSYS_OPT_MEDFORD || EFSYS_OPT_MEDFORD2
 155 static const efx_rx_ops_t __efx_rx_ef10_ops = {
 156         ef10_rx_init,                           /* erxo_init */
 157         ef10_rx_fini,                           /* erxo_fini */
 158 #if EFSYS_OPT_RX_SCATTER
 159         ef10_rx_scatter_enable,                 /* erxo_scatter_enable */
 160 #endif
 161 #if EFSYS_OPT_RX_SCALE
 162         ef10_rx_scale_context_alloc,            /* erxo_scale_context_alloc */
 163         ef10_rx_scale_context_free,             /* erxo_scale_context_free */
 164         ef10_rx_scale_mode_set,                 /* erxo_scale_mode_set */
 165         ef10_rx_scale_key_set,                  /* erxo_scale_key_set */
 166         ef10_rx_scale_tbl_set,                  /* erxo_scale_tbl_set */
 167         ef10_rx_prefix_hash,                    /* erxo_prefix_hash */
 168 #endif
 169         ef10_rx_prefix_pktlen,                  /* erxo_prefix_pktlen */
 170         ef10_rx_qpost,                          /* erxo_qpost */
 171         ef10_rx_qpush,                          /* erxo_qpush */
 172 #if EFSYS_OPT_RX_PACKED_STREAM
 173         ef10_rx_qpush_ps_credits,               /* erxo_qpush_ps_credits */
 174         ef10_rx_qps_packet_info,                /* erxo_qps_packet_info */
 175 #endif
 176         ef10_rx_qflush,                         /* erxo_qflush */
 177         ef10_rx_qenable,                        /* erxo_qenable */
 178         ef10_rx_qcreate,                        /* erxo_qcreate */
 179         ef10_rx_qdestroy,                       /* erxo_qdestroy */
 180 };
 181 #endif  /* EFSYS_OPT_HUNTINGTON || EFSYS_OPT_MEDFORD || EFSYS_OPT_MEDFORD2 */
 182
 183
 184         __checkReturn   efx_rc_t
 185 efx_rx_init(
 186         __inout         efx_nic_t *enp)
 187 {
 188         const efx_rx_ops_t *erxop;
 189         efx_rc_t rc;
 190
 191         EFSYS_ASSERT3U(enp->en_magic, ==, EFX_NIC_MAGIC);
 192         EFSYS_ASSERT3U(enp->en_mod_flags, &, EFX_MOD_NIC);
 193
 194         if (!(enp->en_mod_flags & EFX_MOD_EV)) {
 195                 rc = EINVAL;
 196                 goto fail1;
 197         }
 198
 199         if (enp->en_mod_flags & EFX_MOD_RX) {
 200                 rc = EINVAL;
 201                 goto fail2;
 202         }
 203
 204         switch (enp->en_family) {
 205 #if EFSYS_OPT_SIENA
 206         case EFX_FAMILY_SIENA:
 207                 erxop = &__efx_rx_siena_ops;
 208                 break;
 209 #endif /* EFSYS_OPT_SIENA */
 210
 211 #if EFSYS_OPT_HUNTINGTON
 212         case EFX_FAMILY_HUNTINGTON:
 213                 erxop = &__efx_rx_ef10_ops;
 214                 break;
 215 #endif /* EFSYS_OPT_HUNTINGTON */
 216
 217 #if EFSYS_OPT_MEDFORD
 218         case EFX_FAMILY_MEDFORD:
 219                 erxop = &__efx_rx_ef10_ops;
 220                 break;
 221 #endif /* EFSYS_OPT_MEDFORD */
 222
 223 #if EFSYS_OPT_MEDFORD2
 224         case EFX_FAMILY_MEDFORD2:
 225                 erxop = &__efx_rx_ef10_ops;
 226                 break;
 227 #endif /* EFSYS_OPT_MEDFORD2 */
 228
 229         default:
 230                 EFSYS_ASSERT(0);
 231                 rc = ENOTSUP;
 232                 goto fail3;
 233         }
 234
 235         if ((rc = erxop->erxo_init(enp)) != 0)
 236                 goto fail4;
 237
 238         enp->en_erxop = erxop;
 239         enp->en_mod_flags |= EFX_MOD_RX;
 240         return (0);
 241
 242 fail4:
 243         EFSYS_PROBE(fail4);
 244 fail3:
 245         EFSYS_PROBE(fail3);
 246 fail2:
 247         EFSYS_PROBE(fail2);
 248 fail1:
 249         EFSYS_PROBE1(fail1, efx_rc_t, rc);
 250
 251         enp->en_erxop = NULL;
 252         enp->en_mod_flags &= ~EFX_MOD_RX;
 253         return (rc);
 254 }
 255
 256                         void
 257 efx_rx_fini(
 258         __in            efx_nic_t *enp)
 259 {
 260         const efx_rx_ops_t *erxop = enp->en_erxop;
 261
 262         EFSYS_ASSERT3U(enp->en_magic, ==, EFX_NIC_MAGIC);
 263         EFSYS_ASSERT3U(enp->en_mod_flags, &, EFX_MOD_NIC);
 264         EFSYS_ASSERT3U(enp->en_mod_flags, &, EFX_MOD_RX);
 265         EFSYS_ASSERT3U(enp->en_rx_qcount, ==, 0);
 266
 267         erxop->erxo_fini(enp);
 268
 269         enp->en_erxop = NULL;
 270         enp->en_mod_flags &= ~EFX_MOD_RX;
 271 }
 272
 273 #if EFSYS_OPT_RX_SCATTER
 274         __checkReturn   efx_rc_t
 275 efx_rx_scatter_enable(
 276         __in            efx_nic_t *enp,
 277         __in            unsigned int buf_size)
 278 {
 279         const efx_rx_ops_t *erxop = enp->en_erxop;
 280         efx_rc_t rc;
 281
 282         EFSYS_ASSERT3U(enp->en_magic, ==, EFX_NIC_MAGIC);
 283         EFSYS_ASSERT3U(enp->en_mod_flags, &, EFX_MOD_RX);
 284
 285         if ((rc = erxop->erxo_scatter_enable(enp, buf_size)) != 0)
 286                 goto fail1;
 287
 288         return (0);
 289
 290 fail1:
 291         EFSYS_PROBE1(fail1, efx_rc_t, rc);
 292         return (rc);
 293 }
 294 #endif  /* EFSYS_OPT_RX_SCATTER */
 295
 296 #if EFSYS_OPT_RX_SCALE
 297         __checkReturn                           efx_rc_t
 298 efx_rx_scale_hash_flags_get(
 299         __in                                    efx_nic_t *enp,
 300         __in                                    efx_rx_hash_alg_t hash_alg,
 301         __inout_ecount(EFX_RX_HASH_NFLAGS)      unsigned int *flags,
 302         __out                                   unsigned int *nflagsp)
 303 {
 304         efx_nic_cfg_t *encp = &enp->en_nic_cfg;
 305         boolean_t l4;
 306         boolean_t additional_modes;
 307         unsigned int *entryp = flags;
 308         efx_rc_t rc;
 309
 310         if (flags == NULL || nflagsp == NULL) {
 311                 rc = EINVAL;
 312                 goto fail1;
 313         }
 314
 315         l4 = encp->enc_rx_scale_l4_hash_supported;
 316         additional_modes = encp->enc_rx_scale_additional_modes_supported;
 317
 318 #define LIST_FLAGS(_entryp, _class, _l4_hashing, _additional_modes)     \
 319         do {                                                            \
 320                 if (_l4_hashing) {                                      \
 321                         *(_entryp++) = EFX_RX_HASH(_class, 4TUPLE);     \
 322                                                                         \
 323                         if (_additional_modes) {                        \
 324                                 *(_entryp++) =                          \
 325                                     EFX_RX_HASH(_class, 2TUPLE_DST);    \
 326                                 *(_entryp++) =                          \
 327                                     EFX_RX_HASH(_class, 2TUPLE_SRC);    \
 328                         }                                               \
 329                 }                                                       \
 330                                                                         \
 331                 *(_entryp++) = EFX_RX_HASH(_class, 2TUPLE);             \
 332                                                                         \
 333                 if (_additional_modes) {                                \
 334                         *(_entryp++) = EFX_RX_HASH(_class, 1TUPLE_DST); \
 335                         *(_entryp++) = EFX_RX_HASH(_class, 1TUPLE_SRC); \
 336                 }                                                       \
 337                                                                         \
 338                 *(_entryp++) = EFX_RX_HASH(_class, DISABLE);            \
 339                                                                         \
 340                 _NOTE(CONSTANTCONDITION)                                \
 341         } while (B_FALSE)
 342
 343         switch (hash_alg) {
 344         case EFX_RX_HASHALG_PACKED_STREAM:
 345                 if ((encp->enc_rx_scale_hash_alg_mask & (1U << hash_alg)) == 0)
 346                         break;
 347                 /* FALLTHRU */
 348         case EFX_RX_HASHALG_TOEPLITZ:
 349                 if ((encp->enc_rx_scale_hash_alg_mask & (1U << hash_alg)) == 0)
 350                         break;
 351
 352                 LIST_FLAGS(entryp, IPV4_TCP, l4, additional_modes);
 353                 LIST_FLAGS(entryp, IPV6_TCP, l4, additional_modes);
 354
 355                 if (additional_modes) {
 356                         LIST_FLAGS(entryp, IPV4_UDP, l4, additional_modes);
 357                         LIST_FLAGS(entryp, IPV6_UDP, l4, additional_modes);
 358                 }
 359
 360                 LIST_FLAGS(entryp, IPV4, B_FALSE, additional_modes);
 361                 LIST_FLAGS(entryp, IPV6, B_FALSE, additional_modes);
 362                 break;
 363
 364         default:
 365                 rc = EINVAL;
 366                 goto fail2;
 367         }
 368
 369 #undef LIST_FLAGS
 370
 371         *nflagsp = (unsigned int)(entryp - flags);
 372         EFSYS_ASSERT3U(*nflagsp, <=, EFX_RX_HASH_NFLAGS);
 373
 374         return (0);
 375
 376 fail2:
 377         EFSYS_PROBE(fail2);
 378
 379 fail1:
 380         EFSYS_PROBE1(fail1, efx_rc_t, rc);
 381
 382         return (rc);
 383 }
 384
 385         __checkReturn   efx_rc_t
 386 efx_rx_hash_default_support_get(
 387         __in            efx_nic_t *enp,
 388         __out           efx_rx_hash_support_t *supportp)
 389 {
 390         efx_rc_t rc;
 391
 392         EFSYS_ASSERT3U(enp->en_magic, ==, EFX_NIC_MAGIC);
 393         EFSYS_ASSERT3U(enp->en_mod_flags, &, EFX_MOD_RX);
 394
 395         if (supportp == NULL) {
 396                 rc = EINVAL;
 397                 goto fail1;
 398         }
 399
 400         /*
 401          * Report the hashing support the client gets by default if it
 402          * does not allocate an RSS context itself.
 403          */
 404         *supportp = enp->en_hash_support;
 405
 406         return (0);
 407
 408 fail1:
 409         EFSYS_PROBE1(fail1, efx_rc_t, rc);
 410
 411         return (rc);
 412 }
 413
 414         __checkReturn   efx_rc_t
 415 efx_rx_scale_default_support_get(
 416         __in            efx_nic_t *enp,
 417         __out           efx_rx_scale_context_type_t *typep)
 418 {
 419         efx_rc_t rc;
 420
 421         EFSYS_ASSERT3U(enp->en_magic, ==, EFX_NIC_MAGIC);
 422         EFSYS_ASSERT3U(enp->en_mod_flags, &, EFX_MOD_RX);
 423
 424         if (typep == NULL) {
 425                 rc = EINVAL;
 426                 goto fail1;
 427         }
 428
 429         /*
 430          * Report the RSS support the client gets by default if it
 431          * does not allocate an RSS context itself.
 432          */
 433         *typep = enp->en_rss_context_type;
 434
 435         return (0);
 436
 437 fail1:
 438         EFSYS_PROBE1(fail1, efx_rc_t, rc);
 439
 440         return (rc);
 441 }
 442 #endif  /* EFSYS_OPT_RX_SCALE */
 443
 444 #if EFSYS_OPT_RX_SCALE
 445         __checkReturn   efx_rc_t
 446 efx_rx_scale_context_alloc(
 447         __in            efx_nic_t *enp,
 448         __in            efx_rx_scale_context_type_t type,
 449         __in            uint32_t num_queues,
 450         __out           uint32_t *rss_contextp)
 451 {
 452         const efx_rx_ops_t *erxop = enp->en_erxop;
 453         efx_rc_t rc;
 454
 455         EFSYS_ASSERT3U(enp->en_magic, ==, EFX_NIC_MAGIC);
 456         EFSYS_ASSERT3U(enp->en_mod_flags, &, EFX_MOD_RX);
 457
 458         if (erxop->erxo_scale_context_alloc == NULL) {
 459                 rc = ENOTSUP;
 460                 goto fail1;
 461         }
 462         if ((rc = erxop->erxo_scale_context_alloc(enp, type,
 463                             num_queues, rss_contextp)) != 0) {
 464                 goto fail2;
 465         }
 466
 467         return (0);
 468
 469 fail2:
 470         EFSYS_PROBE(fail2);
 471 fail1:
 472         EFSYS_PROBE1(fail1, efx_rc_t, rc);
 473         return (rc);
 474 }
 475 #endif  /* EFSYS_OPT_RX_SCALE */
 476
 477 #if EFSYS_OPT_RX_SCALE
 478         __checkReturn   efx_rc_t
 479 efx_rx_scale_context_free(
 480         __in            efx_nic_t *enp,
 481         __in            uint32_t rss_context)
 482 {
 483         const efx_rx_ops_t *erxop = enp->en_erxop;
 484         efx_rc_t rc;
 485
 486         EFSYS_ASSERT3U(enp->en_magic, ==, EFX_NIC_MAGIC);
 487         EFSYS_ASSERT3U(enp->en_mod_flags, &, EFX_MOD_RX);
 488
 489         if (erxop->erxo_scale_context_free == NULL) {
 490                 rc = ENOTSUP;
 491                 goto fail1;
 492         }
 493         if ((rc = erxop->erxo_scale_context_free(enp, rss_context)) != 0)
 494                 goto fail2;
 495
 496         return (0);
 497
 498 fail2:
 499         EFSYS_PROBE(fail2);
 500 fail1:
 501         EFSYS_PROBE1(fail1, efx_rc_t, rc);
 502         return (rc);
 503 }
 504 #endif  /* EFSYS_OPT_RX_SCALE */
 505
 506 #if EFSYS_OPT_RX_SCALE
 507         __checkReturn   efx_rc_t
 508 efx_rx_scale_mode_set(
 509         __in            efx_nic_t *enp,
 510         __in            uint32_t rss_context,
 511         __in            efx_rx_hash_alg_t alg,
 512         __in            efx_rx_hash_type_t type,
 513         __in            boolean_t insert)
 514 {
 515         const efx_rx_ops_t *erxop = enp->en_erxop;
 516         unsigned int type_flags[EFX_RX_HASH_NFLAGS];
 517         unsigned int type_nflags;
 518         efx_rx_hash_type_t type_check;
 519         unsigned int i;
 520         efx_rc_t rc;
 521
 522         EFSYS_ASSERT3U(enp->en_magic, ==, EFX_NIC_MAGIC);
 523         EFSYS_ASSERT3U(enp->en_mod_flags, &, EFX_MOD_RX);
 524
 525         /*
 526          * Legacy flags and modern bits cannot be
 527          * used at the same time in the hash type.
 528          */
 529         if ((type & EFX_RX_HASH_LEGACY_MASK) &&
 530             (type & ~EFX_RX_HASH_LEGACY_MASK)) {
 531                 rc = EINVAL;
 532                 goto fail1;
 533         }
 534
 535         /*
 536          * Translate legacy flags to the new representation
 537          * so that chip-specific handlers will consider the
 538          * new flags only.
 539          */
 540         if (type & EFX_RX_HASH_IPV4) {
 541                 type |= EFX_RX_HASH(IPV4, 2TUPLE);
 542                 type |= EFX_RX_HASH(IPV4_TCP, 2TUPLE);
 543                 type |= EFX_RX_HASH(IPV4_UDP, 2TUPLE);
 544         }
 545
 546         if (type & EFX_RX_HASH_TCPIPV4)
 547                 type |= EFX_RX_HASH(IPV4_TCP, 4TUPLE);
 548
 549         if (type & EFX_RX_HASH_IPV6) {
 550                 type |= EFX_RX_HASH(IPV6, 2TUPLE);
 551                 type |= EFX_RX_HASH(IPV6_TCP, 2TUPLE);
 552                 type |= EFX_RX_HASH(IPV6_UDP, 2TUPLE);
 553         }
 554
 555         if (type & EFX_RX_HASH_TCPIPV6)
 556                 type |= EFX_RX_HASH(IPV6_TCP, 4TUPLE);
 557
 558         type &= ~EFX_RX_HASH_LEGACY_MASK;
 559         type_check = type;
 560
 561         /*
 562          * Get the list of supported hash flags and sanitise the input.
 563          */
 564         rc = efx_rx_scale_hash_flags_get(enp, alg, type_flags, &type_nflags);
 565         if (rc != 0)
 566                 goto fail2;
 567
 568         for (i = 0; i < type_nflags; ++i) {
 569                 if ((type_check & type_flags[i]) == type_flags[i])
 570                         type_check &= ~(type_flags[i]);
 571         }
 572
 573         if (type_check != 0) {
 574                 rc = EINVAL;
 575                 goto fail3;
 576         }
 577
 578         if (erxop->erxo_scale_mode_set != NULL) {
 579                 if ((rc = erxop->erxo_scale_mode_set(enp, rss_context, alg,
 580                             type, insert)) != 0)
 581                         goto fail4;
 582         }
 583
 584         return (0);
 585
 586 fail4:
 587         EFSYS_PROBE(fail4);
 588 fail3:
 589         EFSYS_PROBE(fail3);
 590 fail2:
 591         EFSYS_PROBE(fail2);
 592 fail1:
 593         EFSYS_PROBE1(fail1, efx_rc_t, rc);
 594         return (rc);
 595 }
 596 #endif  /* EFSYS_OPT_RX_SCALE */
 597
 598 #if EFSYS_OPT_RX_SCALE
 599         __checkReturn   efx_rc_t
 600 efx_rx_scale_key_set(
 601         __in            efx_nic_t *enp,
 602         __in            uint32_t rss_context,
 603         __in_ecount(n)  uint8_t *key,
 604         __in            size_t n)
 605 {
 606         const efx_rx_ops_t *erxop = enp->en_erxop;
 607         efx_rc_t rc;
 608
 609         EFSYS_ASSERT3U(enp->en_magic, ==, EFX_NIC_MAGIC);
 610         EFSYS_ASSERT3U(enp->en_mod_flags, &, EFX_MOD_RX);
 611
 612         if ((rc = erxop->erxo_scale_key_set(enp, rss_context, key, n)) != 0)
 613                 goto fail1;
 614
 615         return (0);
 616
 617 fail1:
 618         EFSYS_PROBE1(fail1, efx_rc_t, rc);
 619
 620         return (rc);
 621 }
 622 #endif  /* EFSYS_OPT_RX_SCALE */
 623
 624 #if EFSYS_OPT_RX_SCALE
 625         __checkReturn   efx_rc_t
 626 efx_rx_scale_tbl_set(
 627         __in            efx_nic_t *enp,
 628         __in            uint32_t rss_context,
 629         __in_ecount(n)  unsigned int *table,
 630         __in            size_t n)
 631 {
 632         const efx_rx_ops_t *erxop = enp->en_erxop;
 633         efx_rc_t rc;
 634
 635         EFSYS_ASSERT3U(enp->en_magic, ==, EFX_NIC_MAGIC);
 636         EFSYS_ASSERT3U(enp->en_mod_flags, &, EFX_MOD_RX);
 637
 638         if ((rc = erxop->erxo_scale_tbl_set(enp, rss_context, table, n)) != 0)
 639                 goto fail1;
 640
 641         return (0);
 642
 643 fail1:
 644         EFSYS_PROBE1(fail1, efx_rc_t, rc);
 645
 646         return (rc);
 647 }
 648 #endif  /* EFSYS_OPT_RX_SCALE */
 649
 650                                 void
 651 efx_rx_qpost(
 652         __in                    efx_rxq_t *erp,
 653         __in_ecount(ndescs)     efsys_dma_addr_t *addrp,
 654         __in                    size_t size,
 655         __in                    unsigned int ndescs,
 656         __in                    unsigned int completed,
 657         __in                    unsigned int added)
 658 {
 659         efx_nic_t *enp = erp->er_enp;
 660         const efx_rx_ops_t *erxop = enp->en_erxop;
 661
 662         EFSYS_ASSERT3U(erp->er_magic, ==, EFX_RXQ_MAGIC);
 663
 664         erxop->erxo_qpost(erp, addrp, size, ndescs, completed, added);
 665 }
 666
 667 #if EFSYS_OPT_RX_PACKED_STREAM
 668
 669                         void
 670 efx_rx_qpush_ps_credits(
 671         __in            efx_rxq_t *erp)
 672 {
 673         efx_nic_t *enp = erp->er_enp;
 674         const efx_rx_ops_t *erxop = enp->en_erxop;
 675
 676         EFSYS_ASSERT3U(erp->er_magic, ==, EFX_RXQ_MAGIC);
 677
 678         erxop->erxo_qpush_ps_credits(erp);
 679 }
 680
 681         __checkReturn   uint8_t *
 682 efx_rx_qps_packet_info(
 683         __in            efx_rxq_t *erp,
 684         __in            uint8_t *buffer,
 685         __in            uint32_t buffer_length,
 686         __in            uint32_t current_offset,
 687         __out           uint16_t *lengthp,
 688         __out           uint32_t *next_offsetp,
 689         __out           uint32_t *timestamp)
 690 {
 691         efx_nic_t *enp = erp->er_enp;
 692         const efx_rx_ops_t *erxop = enp->en_erxop;
 693
 694         return (erxop->erxo_qps_packet_info(erp, buffer,
 695                 buffer_length, current_offset, lengthp,
 696                 next_offsetp, timestamp));
 697 }
 698
 699 #endif /* EFSYS_OPT_RX_PACKED_STREAM */
 700
 701                         void
 702 efx_rx_qpush(
 703         __in            efx_rxq_t *erp,
 704         __in            unsigned int added,
 705         __inout         unsigned int *pushedp)
 706 {
 707         efx_nic_t *enp = erp->er_enp;
 708         const efx_rx_ops_t *erxop = enp->en_erxop;
 709
 710         EFSYS_ASSERT3U(erp->er_magic, ==, EFX_RXQ_MAGIC);
 711
 712         erxop->erxo_qpush(erp, added, pushedp);
 713 }
 714
 715         __checkReturn   efx_rc_t
 716 efx_rx_qflush(
 717         __in            efx_rxq_t *erp)
 718 {
 719         efx_nic_t *enp = erp->er_enp;
 720         const efx_rx_ops_t *erxop = enp->en_erxop;
 721         efx_rc_t rc;
 722
 723         EFSYS_ASSERT3U(erp->er_magic, ==, EFX_RXQ_MAGIC);
 724
 725         if ((rc = erxop->erxo_qflush(erp)) != 0)
 726                 goto fail1;
 727
 728         return (0);
 729
 730 fail1:
 731         EFSYS_PROBE1(fail1, efx_rc_t, rc);
 732
 733         return (rc);
 734 }
 735
 736                         void
 737 efx_rx_qenable(
 738         __in            efx_rxq_t *erp)
 739 {
 740         efx_nic_t *enp = erp->er_enp;
 741         const efx_rx_ops_t *erxop = enp->en_erxop;
 742
 743         EFSYS_ASSERT3U(erp->er_magic, ==, EFX_RXQ_MAGIC);
 744
 745         erxop->erxo_qenable(erp);
 746 }
 747
 748 static  __checkReturn   efx_rc_t
 749 efx_rx_qcreate_internal(
 750         __in            efx_nic_t *enp,
 751         __in            unsigned int index,
 752         __in            unsigned int label,
 753         __in            efx_rxq_type_t type,
 754         __in            const efx_rxq_type_data_t *type_data,
 755         __in            efsys_mem_t *esmp,
 756         __in            size_t ndescs,
 757         __in            uint32_t id,
 758         __in            unsigned int flags,
 759         __in            efx_evq_t *eep,
 760         __deref_out     efx_rxq_t **erpp)
 761 {
 762         const efx_rx_ops_t *erxop = enp->en_erxop;
 763         efx_rxq_t *erp;
 764         efx_rc_t rc;
 765
 766         EFSYS_ASSERT3U(enp->en_magic, ==, EFX_NIC_MAGIC);
 767         EFSYS_ASSERT3U(enp->en_mod_flags, &, EFX_MOD_RX);
 768
 769         /* Allocate an RXQ object */
 770         EFSYS_KMEM_ALLOC(enp->en_esip, sizeof (efx_rxq_t), erp);
 771
 772         if (erp == NULL) {
 773                 rc = ENOMEM;
 774                 goto fail1;
 775         }
 776
 777         erp->er_magic = EFX_RXQ_MAGIC;
 778         erp->er_enp = enp;
 779         erp->er_index = index;
 780         erp->er_mask = ndescs - 1;
 781         erp->er_esmp = esmp;
 782
 783         if ((rc = erxop->erxo_qcreate(enp, index, label, type, type_data, esmp,
 784             ndescs, id, flags, eep, erp)) != 0)
 785                 goto fail2;
 786
 787         enp->en_rx_qcount++;
 788         *erpp = erp;
 789
 790         return (0);
 791
 792 fail2:
 793         EFSYS_PROBE(fail2);
 794
 795         EFSYS_KMEM_FREE(enp->en_esip, sizeof (efx_rxq_t), erp);
 796 fail1:
 797         EFSYS_PROBE1(fail1, efx_rc_t, rc);
 798
 799         return (rc);
 800 }
 801
 802         __checkReturn   efx_rc_t
 803 efx_rx_qcreate(
 804         __in            efx_nic_t *enp,
 805         __in            unsigned int index,
 806         __in            unsigned int label,
 807         __in            efx_rxq_type_t type,
 808         __in            efsys_mem_t *esmp,
 809         __in            size_t ndescs,
 810         __in            uint32_t id,
 811         __in            unsigned int flags,
 812         __in            efx_evq_t *eep,
 813         __deref_out     efx_rxq_t **erpp)
 814 {
 815         return efx_rx_qcreate_internal(enp, index, label, type, NULL,
 816             esmp, ndescs, id, flags, eep, erpp);
 817 }
 818
 819 #if EFSYS_OPT_RX_PACKED_STREAM
 820
 821         __checkReturn   efx_rc_t
 822 efx_rx_qcreate_packed_stream(
 823         __in            efx_nic_t *enp,
 824         __in            unsigned int index,
 825         __in            unsigned int label,
 826         __in            uint32_t ps_buf_size,
 827         __in            efsys_mem_t *esmp,
 828         __in            size_t ndescs,
 829         __in            efx_evq_t *eep,
 830         __deref_out     efx_rxq_t **erpp)
 831 {
 832         efx_rxq_type_data_t type_data;
 833
 834         memset(&type_data, 0, sizeof(type_data));
 835
 836         type_data.ertd_packed_stream.eps_buf_size = ps_buf_size;
 837
 838         return efx_rx_qcreate_internal(enp, index, label,
 839             EFX_RXQ_TYPE_PACKED_STREAM, &type_data, esmp, ndescs,
 840             0 /* id unused on EF10 */, EFX_RXQ_FLAG_NONE, eep, erpp);
 841 }
 842
 843 #endif
 844
 845 #if EFSYS_OPT_RX_ES_SUPER_BUFFER
 846
 847         __checkReturn   efx_rc_t
 848 efx_rx_qcreate_es_super_buffer(
 849         __in            efx_nic_t *enp,
 850         __in            unsigned int index,
 851         __in            unsigned int label,
 852         __in            uint32_t n_bufs_per_desc,
 853         __in            uint32_t max_dma_len,
 854         __in            uint32_t buf_stride,
 855         __in            uint32_t hol_block_timeout,
 856         __in            efsys_mem_t *esmp,
 857         __in            size_t ndescs,
 858         __in            unsigned int flags,
 859         __in            efx_evq_t *eep,
 860         __deref_out     efx_rxq_t **erpp)
 861 {
 862         efx_rc_t rc;
 863         efx_rxq_type_data_t type_data;
 864
 865         if (hol_block_timeout > EFX_RXQ_ES_SUPER_BUFFER_HOL_BLOCK_MAX) {
 866                 rc = EINVAL;
 867                 goto fail1;
 868         }
 869
 870         memset(&type_data, 0, sizeof(type_data));
 871
 872         type_data.ertd_es_super_buffer.eessb_bufs_per_desc = n_bufs_per_desc;
 873         type_data.ertd_es_super_buffer.eessb_max_dma_len = max_dma_len;
 874         type_data.ertd_es_super_buffer.eessb_buf_stride = buf_stride;
 875         type_data.ertd_es_super_buffer.eessb_hol_block_timeout =
 876             hol_block_timeout;
 877
 878         rc = efx_rx_qcreate_internal(enp, index, label,
 879             EFX_RXQ_TYPE_ES_SUPER_BUFFER, &type_data, esmp, ndescs,
 880             0 /* id unused on EF10 */, flags, eep, erpp);
 881         if (rc != 0)
 882                 goto fail2;
 883
 884         return (0);
 885
 886 fail2:
 887         EFSYS_PROBE(fail2);
 888 fail1:
 889         EFSYS_PROBE1(fail1, efx_rc_t, rc);
 890
 891         return (rc);
 892 }
 893
 894 #endif
 895
 896
 897                         void
 898 efx_rx_qdestroy(
 899         __in            efx_rxq_t *erp)
 900 {
 901         efx_nic_t *enp = erp->er_enp;
 902         const efx_rx_ops_t *erxop = enp->en_erxop;
 903
 904         EFSYS_ASSERT3U(erp->er_magic, ==, EFX_RXQ_MAGIC);
 905
 906         erxop->erxo_qdestroy(erp);
 907 }
 908
 909         __checkReturn   efx_rc_t
 910 efx_pseudo_hdr_pkt_length_get(
 911         __in            efx_rxq_t *erp,
 912         __in            uint8_t *buffer,
 913         __out           uint16_t *lengthp)
 914 {
 915         efx_nic_t *enp = erp->er_enp;
 916         const efx_rx_ops_t *erxop = enp->en_erxop;
 917
 918         EFSYS_ASSERT3U(erp->er_magic, ==, EFX_RXQ_MAGIC);
 919
 920         return (erxop->erxo_prefix_pktlen(enp, buffer, lengthp));
 921 }
 922
 923 #if EFSYS_OPT_RX_SCALE
 924         __checkReturn   uint32_t
 925 efx_pseudo_hdr_hash_get(
 926         __in            efx_rxq_t *erp,
 927         __in            efx_rx_hash_alg_t func,
 928         __in            uint8_t *buffer)
 929 {
 930         efx_nic_t *enp = erp->er_enp;
 931         const efx_rx_ops_t *erxop = enp->en_erxop;
 932
 933         EFSYS_ASSERT3U(erp->er_magic, ==, EFX_RXQ_MAGIC);
 934
 935         EFSYS_ASSERT3U(enp->en_hash_support, ==, EFX_RX_HASH_AVAILABLE);
 936         return (erxop->erxo_prefix_hash(enp, func, buffer));
 937 }
 938 #endif  /* EFSYS_OPT_RX_SCALE */
 939
 940 #if EFSYS_OPT_SIENA
 941
 942 static  __checkReturn   efx_rc_t
 943 siena_rx_init(
 944         __in            efx_nic_t *enp)
 945 {
 946         efx_oword_t oword;
 947         unsigned int index;
 948
 949         EFX_BAR_READO(enp, FR_AZ_RX_CFG_REG, &oword);
 950
 951         EFX_SET_OWORD_FIELD(oword, FRF_BZ_RX_DESC_PUSH_EN, 0);
 952         EFX_SET_OWORD_FIELD(oword, FRF_BZ_RX_HASH_ALG, 0);
 953         EFX_SET_OWORD_FIELD(oword, FRF_BZ_RX_IP_HASH, 0);
 954         EFX_SET_OWORD_FIELD(oword, FRF_BZ_RX_TCP_SUP, 0);
 955         EFX_SET_OWORD_FIELD(oword, FRF_BZ_RX_HASH_INSRT_HDR, 0);
 956         EFX_SET_OWORD_FIELD(oword, FRF_BZ_RX_USR_BUF_SIZE, 0x3000 / 32);
 957         EFX_BAR_WRITEO(enp, FR_AZ_RX_CFG_REG, &oword);
 958
 959         /* Zero the RSS table */
 960         for (index = 0; index < FR_BZ_RX_INDIRECTION_TBL_ROWS;
 961             index++) {
 962                 EFX_ZERO_OWORD(oword);
 963                 EFX_BAR_TBL_WRITEO(enp, FR_BZ_RX_INDIRECTION_TBL,
 964                                     index, &oword, B_TRUE);
 965         }
 966
 967 #if EFSYS_OPT_RX_SCALE
 968         /* The RSS key and indirection table are writable. */
 969         enp->en_rss_context_type = EFX_RX_SCALE_EXCLUSIVE;
 970
 971         /* Hardware can insert RX hash with/without RSS */
 972         enp->en_hash_support = EFX_RX_HASH_AVAILABLE;
 973 #endif  /* EFSYS_OPT_RX_SCALE */
 974
 975         return (0);
 976 }
 977
 978 #if EFSYS_OPT_RX_SCATTER
 979 static  __checkReturn   efx_rc_t
 980 siena_rx_scatter_enable(
 981         __in            efx_nic_t *enp,
 982         __in            unsigned int buf_size)
 983 {
 984         unsigned int nbuf32;
 985         efx_oword_t oword;
 986         efx_rc_t rc;
 987
 988         nbuf32 = buf_size / 32;
 989         if ((nbuf32 == 0) ||
 990             (nbuf32 >= (1 << FRF_BZ_RX_USR_BUF_SIZE_WIDTH)) ||
 991             ((buf_size % 32) != 0)) {
 992                 rc = EINVAL;
 993                 goto fail1;
 994         }
 995
 996         if (enp->en_rx_qcount > 0) {
 997                 rc = EBUSY;
 998                 goto fail2;
 999         }
1000
1001         /* Set scatter buffer size */
1002         EFX_BAR_READO(enp, FR_AZ_RX_CFG_REG, &oword);
1003         EFX_SET_OWORD_FIELD(oword, FRF_BZ_RX_USR_BUF_SIZE, nbuf32);
1004         EFX_BAR_WRITEO(enp, FR_AZ_RX_CFG_REG, &oword);
1005
1006         /* Enable scatter for packets not matching a filter */
1007         EFX_BAR_READO(enp, FR_AZ_RX_FILTER_CTL_REG, &oword);
1008         EFX_SET_OWORD_FIELD(oword, FRF_BZ_SCATTER_ENBL_NO_MATCH_Q, 1);
1009         EFX_BAR_WRITEO(enp, FR_AZ_RX_FILTER_CTL_REG, &oword);
1010
1011         return (0);
1012
1013 fail2:
1014         EFSYS_PROBE(fail2);
1015 fail1:
1016         EFSYS_PROBE1(fail1, efx_rc_t, rc);
1017
1018         return (rc);
1019 }
1020 #endif  /* EFSYS_OPT_RX_SCATTER */
1021
1022
1023 #define EFX_RX_LFSR_HASH(_enp, _insert)                                 \
1024         do {                                                            \
1025                 efx_oword_t oword;                                      \
1026                                                                         \
1027                 EFX_BAR_READO((_enp), FR_AZ_RX_CFG_REG, &oword);        \
1028                 EFX_SET_OWORD_FIELD(oword, FRF_BZ_RX_HASH_ALG, 0);      \
1029                 EFX_SET_OWORD_FIELD(oword, FRF_BZ_RX_IP_HASH, 0);       \
1030                 EFX_SET_OWORD_FIELD(oword, FRF_BZ_RX_TCP_SUP, 0);       \
1031                 EFX_SET_OWORD_FIELD(oword, FRF_BZ_RX_HASH_INSRT_HDR,    \
1032                     (_insert) ? 1 : 0);                                 \
1033                 EFX_BAR_WRITEO((_enp), FR_AZ_RX_CFG_REG, &oword);       \
1034                                                                         \
1035                 if ((_enp)->en_family == EFX_FAMILY_SIENA) {            \
1036                         EFX_BAR_READO((_enp), FR_CZ_RX_RSS_IPV6_REG3,   \
1037                             &oword);                                    \
1038                         EFX_SET_OWORD_FIELD(oword,                      \
1039                             FRF_CZ_RX_RSS_IPV6_THASH_ENABLE, 0);        \
1040                         EFX_BAR_WRITEO((_enp), FR_CZ_RX_RSS_IPV6_REG3,  \
1041                             &oword);                                    \
1042                 }                                                       \
1043                                                                         \
1044                 _NOTE(CONSTANTCONDITION)                                \
1045         } while (B_FALSE)
1046
1047 #define EFX_RX_TOEPLITZ_IPV4_HASH(_enp, _insert, _ip, _tcp)             \
1048         do {                                                            \
1049                 efx_oword_t oword;                                      \
1050                                                                         \
1051                 EFX_BAR_READO((_enp), FR_AZ_RX_CFG_REG, &oword);        \
1052                 EFX_SET_OWORD_FIELD(oword, FRF_BZ_RX_HASH_ALG, 1);      \
1053                 EFX_SET_OWORD_FIELD(oword, FRF_BZ_RX_IP_HASH,           \
1054                     (_ip) ? 1 : 0);                                     \
1055                 EFX_SET_OWORD_FIELD(oword, FRF_BZ_RX_TCP_SUP,           \
1056                     (_tcp) ? 0 : 1);                                    \
1057                 EFX_SET_OWORD_FIELD(oword, FRF_BZ_RX_HASH_INSRT_HDR,    \
1058                     (_insert) ? 1 : 0);                                 \
1059                 EFX_BAR_WRITEO((_enp), FR_AZ_RX_CFG_REG, &oword);       \
1060                                                                         \
1061                 _NOTE(CONSTANTCONDITION)                                \
1062         } while (B_FALSE)
1063
1064 #define EFX_RX_TOEPLITZ_IPV6_HASH(_enp, _ip, _tcp, _rc)                 \
1065         do {                                                            \
1066                 efx_oword_t oword;                                      \
1067                                                                         \
1068                 EFX_BAR_READO((_enp), FR_CZ_RX_RSS_IPV6_REG3, &oword);  \
1069                 EFX_SET_OWORD_FIELD(oword,                              \
1070                     FRF_CZ_RX_RSS_IPV6_THASH_ENABLE, 1);                \
1071                 EFX_SET_OWORD_FIELD(oword,                              \
1072                     FRF_CZ_RX_RSS_IPV6_IP_THASH_ENABLE, (_ip) ? 1 : 0); \
1073                 EFX_SET_OWORD_FIELD(oword,                              \
1074                     FRF_CZ_RX_RSS_IPV6_TCP_SUPPRESS, (_tcp) ? 0 : 1);   \
1075                 EFX_BAR_WRITEO((_enp), FR_CZ_RX_RSS_IPV6_REG3, &oword); \
1076                                                                         \
1077                 (_rc) = 0;                                              \
1078                                                                         \
1079                 _NOTE(CONSTANTCONDITION)                                \
1080         } while (B_FALSE)
1081
1082
1083 #if EFSYS_OPT_RX_SCALE
1084
1085 static  __checkReturn   efx_rc_t
1086 siena_rx_scale_mode_set(
1087         __in            efx_nic_t *enp,
1088         __in            uint32_t rss_context,
1089         __in            efx_rx_hash_alg_t alg,
1090         __in            efx_rx_hash_type_t type,
1091         __in            boolean_t insert)
1092 {
1093         efx_rx_hash_type_t type_ipv4 = EFX_RX_HASH(IPV4, 2TUPLE);
1094         efx_rx_hash_type_t type_ipv4_tcp = EFX_RX_HASH(IPV4_TCP, 4TUPLE);
1095         efx_rx_hash_type_t type_ipv6 = EFX_RX_HASH(IPV6, 2TUPLE);
1096         efx_rx_hash_type_t type_ipv6_tcp = EFX_RX_HASH(IPV6_TCP, 4TUPLE);
1097         efx_rc_t rc;
1098
1099         if (rss_context != EFX_RSS_CONTEXT_DEFAULT) {
1100                 rc = EINVAL;
1101                 goto fail1;
1102         }
1103
1104         switch (alg) {
1105         case EFX_RX_HASHALG_LFSR:
1106                 EFX_RX_LFSR_HASH(enp, insert);
1107                 break;
1108
1109         case EFX_RX_HASHALG_TOEPLITZ:
1110                 EFX_RX_TOEPLITZ_IPV4_HASH(enp, insert,
1111                     (type & type_ipv4) == type_ipv4,
1112                     (type & type_ipv4_tcp) == type_ipv4_tcp);
1113
1114                 EFX_RX_TOEPLITZ_IPV6_HASH(enp,
1115                     (type & type_ipv6) == type_ipv6,
1116                     (type & type_ipv6_tcp) == type_ipv6_tcp,
1117                     rc);
1118                 if (rc != 0)
1119                         goto fail2;
1120
1121                 break;
1122
1123         default:
1124                 rc = EINVAL;
1125                 goto fail3;
1126         }
1127
1128         return (0);
1129
1130 fail3:
1131         EFSYS_PROBE(fail3);
1132 fail2:
1133         EFSYS_PROBE(fail2);
1134 fail1:
1135         EFSYS_PROBE1(fail1, efx_rc_t, rc);
1136
1137         EFX_RX_LFSR_HASH(enp, B_FALSE);
1138
1139         return (rc);
1140 }
1141 #endif
1142
1143 #if EFSYS_OPT_RX_SCALE
1144 static  __checkReturn   efx_rc_t
1145 siena_rx_scale_key_set(
1146         __in            efx_nic_t *enp,
1147         __in            uint32_t rss_context,
1148         __in_ecount(n)  uint8_t *key,
1149         __in            size_t n)
1150 {
1151         efx_oword_t oword;
1152         unsigned int byte;
1153         unsigned int offset;
1154         efx_rc_t rc;
1155
1156         if (rss_context != EFX_RSS_CONTEXT_DEFAULT) {
1157                 rc = EINVAL;
1158                 goto fail1;
1159         }
1160
1161         byte = 0;
1162
1163         /* Write Toeplitz IPv4 hash key */
1164         EFX_ZERO_OWORD(oword);
1165         for (offset = (FRF_BZ_RX_RSS_TKEY_LBN + FRF_BZ_RX_RSS_TKEY_WIDTH) / 8;
1166             offset > 0 && byte < n;
1167             --offset)
1168                 oword.eo_u8[offset - 1] = key[byte++];
1169
1170         EFX_BAR_WRITEO(enp, FR_BZ_RX_RSS_TKEY_REG, &oword);
1171
1172         byte = 0;
1173
1174         /* Verify Toeplitz IPv4 hash key */
1175         EFX_BAR_READO(enp, FR_BZ_RX_RSS_TKEY_REG, &oword);
1176         for (offset = (FRF_BZ_RX_RSS_TKEY_LBN + FRF_BZ_RX_RSS_TKEY_WIDTH) / 8;
1177             offset > 0 && byte < n;
1178             --offset) {
1179                 if (oword.eo_u8[offset - 1] != key[byte++]) {
1180                         rc = EFAULT;
1181                         goto fail2;
1182                 }
1183         }
1184
1185         if ((enp->en_features & EFX_FEATURE_IPV6) == 0)
1186                 goto done;
1187
1188         byte = 0;
1189
1190         /* Write Toeplitz IPv6 hash key 3 */
1191         EFX_BAR_READO(enp, FR_CZ_RX_RSS_IPV6_REG3, &oword);
1192         for (offset = (FRF_CZ_RX_RSS_IPV6_TKEY_HI_LBN +
1193             FRF_CZ_RX_RSS_IPV6_TKEY_HI_WIDTH) / 8;
1194             offset > 0 && byte < n;
1195             --offset)
1196                 oword.eo_u8[offset - 1] = key[byte++];
1197
1198         EFX_BAR_WRITEO(enp, FR_CZ_RX_RSS_IPV6_REG3, &oword);
1199
1200         /* Write Toeplitz IPv6 hash key 2 */
1201         EFX_ZERO_OWORD(oword);
1202         for (offset = (FRF_CZ_RX_RSS_IPV6_TKEY_MID_LBN +
1203             FRF_CZ_RX_RSS_IPV6_TKEY_MID_WIDTH) / 8;
1204             offset > 0 && byte < n;
1205             --offset)
1206                 oword.eo_u8[offset - 1] = key[byte++];
1207
1208         EFX_BAR_WRITEO(enp, FR_CZ_RX_RSS_IPV6_REG2, &oword);
1209
1210         /* Write Toeplitz IPv6 hash key 1 */
1211         EFX_ZERO_OWORD(oword);
1212         for (offset = (FRF_CZ_RX_RSS_IPV6_TKEY_LO_LBN +
1213             FRF_CZ_RX_RSS_IPV6_TKEY_LO_WIDTH) / 8;
1214             offset > 0 && byte < n;
1215             --offset)
1216                 oword.eo_u8[offset - 1] = key[byte++];
1217
1218         EFX_BAR_WRITEO(enp, FR_CZ_RX_RSS_IPV6_REG1, &oword);
1219
1220         byte = 0;
1221
1222         /* Verify Toeplitz IPv6 hash key 3 */
1223         EFX_BAR_READO(enp, FR_CZ_RX_RSS_IPV6_REG3, &oword);
1224         for (offset = (FRF_CZ_RX_RSS_IPV6_TKEY_HI_LBN +
1225             FRF_CZ_RX_RSS_IPV6_TKEY_HI_WIDTH) / 8;
1226             offset > 0 && byte < n;
1227             --offset) {
1228                 if (oword.eo_u8[offset - 1] != key[byte++]) {
1229                         rc = EFAULT;
1230                         goto fail3;
1231                 }
1232         }
1233
1234         /* Verify Toeplitz IPv6 hash key 2 */
1235         EFX_BAR_READO(enp, FR_CZ_RX_RSS_IPV6_REG2, &oword);
1236         for (offset = (FRF_CZ_RX_RSS_IPV6_TKEY_MID_LBN +
1237             FRF_CZ_RX_RSS_IPV6_TKEY_MID_WIDTH) / 8;
1238             offset > 0 && byte < n;
1239             --offset) {
1240                 if (oword.eo_u8[offset - 1] != key[byte++]) {
1241                         rc = EFAULT;
1242                         goto fail4;
1243                 }
1244         }
1245
1246         /* Verify Toeplitz IPv6 hash key 1 */
1247         EFX_BAR_READO(enp, FR_CZ_RX_RSS_IPV6_REG1, &oword);
1248         for (offset = (FRF_CZ_RX_RSS_IPV6_TKEY_LO_LBN +
1249             FRF_CZ_RX_RSS_IPV6_TKEY_LO_WIDTH) / 8;
1250             offset > 0 && byte < n;
1251             --offset) {
1252                 if (oword.eo_u8[offset - 1] != key[byte++]) {
1253                         rc = EFAULT;
1254                         goto fail5;
1255                 }
1256         }
1257
1258 done:
1259         return (0);
1260
1261 fail5:
1262         EFSYS_PROBE(fail5);
1263 fail4:
1264         EFSYS_PROBE(fail4);
1265 fail3:
1266         EFSYS_PROBE(fail3);
1267 fail2:
1268         EFSYS_PROBE(fail2);
1269 fail1:
1270         EFSYS_PROBE1(fail1, efx_rc_t, rc);
1271
1272         return (rc);
1273 }
1274 #endif
1275
1276 #if EFSYS_OPT_RX_SCALE
1277 static  __checkReturn   efx_rc_t
1278 siena_rx_scale_tbl_set(
1279         __in            efx_nic_t *enp,
1280         __in            uint32_t rss_context,
1281         __in_ecount(n)  unsigned int *table,
1282         __in            size_t n)
1283 {
1284         efx_oword_t oword;
1285         int index;
1286         efx_rc_t rc;
1287
1288         EFX_STATIC_ASSERT(EFX_RSS_TBL_SIZE == FR_BZ_RX_INDIRECTION_TBL_ROWS);
1289         EFX_STATIC_ASSERT(EFX_MAXRSS == (1 << FRF_BZ_IT_QUEUE_WIDTH));
1290
1291         if (rss_context != EFX_RSS_CONTEXT_DEFAULT) {
1292                 rc = EINVAL;
1293                 goto fail1;
1294         }
1295
1296         if (n > FR_BZ_RX_INDIRECTION_TBL_ROWS) {
1297                 rc = EINVAL;
1298                 goto fail2;
1299         }
1300
1301         for (index = 0; index < FR_BZ_RX_INDIRECTION_TBL_ROWS; index++) {
1302                 uint32_t byte;
1303
1304                 /* Calculate the entry to place in the table */
1305                 byte = (n > 0) ? (uint32_t)table[index % n] : 0;
1306
1307                 EFSYS_PROBE2(table, int, index, uint32_t, byte);
1308
1309                 EFX_POPULATE_OWORD_1(oword, FRF_BZ_IT_QUEUE, byte);
1310
1311                 /* Write the table */
1312                 EFX_BAR_TBL_WRITEO(enp, FR_BZ_RX_INDIRECTION_TBL,
1313                                     index, &oword, B_TRUE);
1314         }
1315
1316         for (index = FR_BZ_RX_INDIRECTION_TBL_ROWS - 1; index >= 0; --index) {
1317                 uint32_t byte;
1318
1319                 /* Determine if we're starting a new batch */
1320                 byte = (n > 0) ? (uint32_t)table[index % n] : 0;
1321
1322                 /* Read the table */
1323                 EFX_BAR_TBL_READO(enp, FR_BZ_RX_INDIRECTION_TBL,
1324                                     index, &oword, B_TRUE);
1325
1326                 /* Verify the entry */
1327                 if (EFX_OWORD_FIELD(oword, FRF_BZ_IT_QUEUE) != byte) {
1328                         rc = EFAULT;
1329                         goto fail3;
1330                 }
1331         }
1332
1333         return (0);
1334
1335 fail3:
1336         EFSYS_PROBE(fail3);
1337 fail2:
1338         EFSYS_PROBE(fail2);
1339 fail1:
1340         EFSYS_PROBE1(fail1, efx_rc_t, rc);
1341
1342         return (rc);
1343 }
1344 #endif
1345
1346 /*
1347  * Falcon/Siena pseudo-header
1348  * --------------------------
1349  *
1350  * Receive packets are prefixed by an optional 16 byte pseudo-header.
1351  * The pseudo-header is a byte array of one of the forms:
1352  *
1353  *  0  1  2  3  4  5  6  7  8  9 10 11 12 13 14 15
1354  * xx.xx.xx.xx.xx.xx.xx.xx.xx.xx.xx.xx.TT.TT.TT.TT
1355  * xx.xx.xx.xx.xx.xx.xx.xx.xx.xx.xx.xx.xx.xx.LL.LL
1356  *
1357  * where:
1358  *   TT.TT.TT.TT   Toeplitz hash (32-bit big-endian)
1359  *   LL.LL         LFSR hash     (16-bit big-endian)
1360  */
1361
1362 #if EFSYS_OPT_RX_SCALE
1363 static  __checkReturn   uint32_t
1364 siena_rx_prefix_hash(
1365         __in            efx_nic_t *enp,
1366         __in            efx_rx_hash_alg_t func,
1367         __in            uint8_t *buffer)
1368 {
1369         _NOTE(ARGUNUSED(enp))
1370
1371         switch (func) {
1372         case EFX_RX_HASHALG_TOEPLITZ:
1373                 return ((buffer[12] << 24) |
1374                     (buffer[13] << 16) |
1375                     (buffer[14] <<  8) |
1376                     buffer[15]);
1377
1378         case EFX_RX_HASHALG_LFSR:
1379                 return ((buffer[14] << 8) | buffer[15]);
1380
1381         default:
1382                 EFSYS_ASSERT(0);
1383                 return (0);
1384         }
1385 }
1386 #endif /* EFSYS_OPT_RX_SCALE */
1387
1388 static  __checkReturn   efx_rc_t
1389 siena_rx_prefix_pktlen(
1390         __in            efx_nic_t *enp,
1391         __in            uint8_t *buffer,
1392         __out           uint16_t *lengthp)
1393 {
1394         _NOTE(ARGUNUSED(enp, buffer, lengthp))
1395
1396         /* Not supported by Falcon/Siena hardware */
1397         EFSYS_ASSERT(0);
1398         return (ENOTSUP);
1399 }
1400
1401
1402 static                          void
1403 siena_rx_qpost(
1404         __in                    efx_rxq_t *erp,
1405         __in_ecount(ndescs)     efsys_dma_addr_t *addrp,
1406         __in                    size_t size,
1407         __in                    unsigned int ndescs,
1408         __in                    unsigned int completed,
1409         __in                    unsigned int added)
1410 {
1411         efx_qword_t qword;
1412         unsigned int i;
1413         unsigned int offset;
1414         unsigned int id;
1415
1416         /* The client driver must not overfill the queue */
1417         EFSYS_ASSERT3U(added - completed + ndescs, <=,
1418             EFX_RXQ_LIMIT(erp->er_mask + 1));
1419
1420         id = added & (erp->er_mask);
1421         for (i = 0; i < ndescs; i++) {
1422                 EFSYS_PROBE4(rx_post, unsigned int, erp->er_index,
1423                     unsigned int, id, efsys_dma_addr_t, addrp[i],
1424                     size_t, size);
1425
1426                 EFX_POPULATE_QWORD_3(qword,
1427                     FSF_AZ_RX_KER_BUF_SIZE, (uint32_t)(size),
1428                     FSF_AZ_RX_KER_BUF_ADDR_DW0,
1429                     (uint32_t)(addrp[i] & 0xffffffff),
1430                     FSF_AZ_RX_KER_BUF_ADDR_DW1,
1431                     (uint32_t)(addrp[i] >> 32));
1432
1433                 offset = id * sizeof (efx_qword_t);
1434                 EFSYS_MEM_WRITEQ(erp->er_esmp, offset, &qword);
1435
1436                 id = (id + 1) & (erp->er_mask);
1437         }
1438 }
1439
1440 static                  void
1441 siena_rx_qpush(
1442         __in    efx_rxq_t *erp,
1443         __in    unsigned int added,
1444         __inout unsigned int *pushedp)
1445 {
1446         efx_nic_t *enp = erp->er_enp;
1447         unsigned int pushed = *pushedp;
1448         uint32_t wptr;
1449         efx_oword_t oword;
1450         efx_dword_t dword;
1451
1452         /* All descriptors are pushed */
1453         *pushedp = added;
1454
1455         /* Push the populated descriptors out */
1456         wptr = added & erp->er_mask;
1457
1458         EFX_POPULATE_OWORD_1(oword, FRF_AZ_RX_DESC_WPTR, wptr);
1459
1460         /* Only write the third DWORD */
1461         EFX_POPULATE_DWORD_1(dword,
1462             EFX_DWORD_0, EFX_OWORD_FIELD(oword, EFX_DWORD_3));
1463
1464         /* Guarantee ordering of memory (descriptors) and PIO (doorbell) */
1465         EFX_DMA_SYNC_QUEUE_FOR_DEVICE(erp->er_esmp, erp->er_mask + 1,
1466             wptr, pushed & erp->er_mask);
1467         EFSYS_PIO_WRITE_BARRIER();
1468         EFX_BAR_TBL_WRITED3(enp, FR_BZ_RX_DESC_UPD_REGP0,
1469                             erp->er_index, &dword, B_FALSE);
1470 }
1471
1472 #if EFSYS_OPT_RX_PACKED_STREAM
1473 static          void
1474 siena_rx_qpush_ps_credits(
1475         __in            efx_rxq_t *erp)
1476 {
1477         /* Not supported by Siena hardware */
1478         EFSYS_ASSERT(0);
1479 }
1480
1481 static          uint8_t *
1482 siena_rx_qps_packet_info(
1483         __in            efx_rxq_t *erp,
1484         __in            uint8_t *buffer,
1485         __in            uint32_t buffer_length,
1486         __in            uint32_t current_offset,
1487         __out           uint16_t *lengthp,
1488         __out           uint32_t *next_offsetp,
1489         __out           uint32_t *timestamp)
1490 {
1491         /* Not supported by Siena hardware */
1492         EFSYS_ASSERT(0);
1493
1494         return (NULL);
1495 }
1496 #endif /* EFSYS_OPT_RX_PACKED_STREAM */
1497
1498 static  __checkReturn   efx_rc_t
1499 siena_rx_qflush(
1500         __in    efx_rxq_t *erp)
1501 {
1502         efx_nic_t *enp = erp->er_enp;
1503         efx_oword_t oword;
1504         uint32_t label;
1505
1506         label = erp->er_index;
1507
1508         /* Flush the queue */
1509         EFX_POPULATE_OWORD_2(oword, FRF_AZ_RX_FLUSH_DESCQ_CMD, 1,
1510             FRF_AZ_RX_FLUSH_DESCQ, label);
1511         EFX_BAR_WRITEO(enp, FR_AZ_RX_FLUSH_DESCQ_REG, &oword);
1512
1513         return (0);
1514 }
1515
1516 static          void
1517 siena_rx_qenable(
1518         __in    efx_rxq_t *erp)
1519 {
1520         efx_nic_t *enp = erp->er_enp;
1521         efx_oword_t oword;
1522
1523         EFSYS_ASSERT3U(erp->er_magic, ==, EFX_RXQ_MAGIC);
1524
1525         EFX_BAR_TBL_READO(enp, FR_AZ_RX_DESC_PTR_TBL,
1526                             erp->er_index, &oword, B_TRUE);
1527
1528         EFX_SET_OWORD_FIELD(oword, FRF_AZ_RX_DC_HW_RPTR, 0);
1529         EFX_SET_OWORD_FIELD(oword, FRF_AZ_RX_DESCQ_HW_RPTR, 0);
1530         EFX_SET_OWORD_FIELD(oword, FRF_AZ_RX_DESCQ_EN, 1);
1531
1532         EFX_BAR_TBL_WRITEO(enp, FR_AZ_RX_DESC_PTR_TBL,
1533                             erp->er_index, &oword, B_TRUE);
1534 }
1535
1536 static  __checkReturn   efx_rc_t
1537 siena_rx_qcreate(
1538         __in            efx_nic_t *enp,
1539         __in            unsigned int index,
1540         __in            unsigned int label,
1541         __in            efx_rxq_type_t type,
1542         __in            const efx_rxq_type_data_t *type_data,
1543         __in            efsys_mem_t *esmp,
1544         __in            size_t ndescs,
1545         __in            uint32_t id,
1546         __in            unsigned int flags,
1547         __in            efx_evq_t *eep,
1548         __in            efx_rxq_t *erp)
1549 {
1550         efx_nic_cfg_t *encp = &(enp->en_nic_cfg);
1551         efx_oword_t oword;
1552         uint32_t size;
1553         boolean_t jumbo = B_FALSE;
1554         efx_rc_t rc;
1555
1556         _NOTE(ARGUNUSED(esmp))
1557         _NOTE(ARGUNUSED(type_data))
1558
1559         EFX_STATIC_ASSERT(EFX_EV_RX_NLABELS ==
1560             (1 << FRF_AZ_RX_DESCQ_LABEL_WIDTH));
1561         EFSYS_ASSERT3U(label, <, EFX_EV_RX_NLABELS);
1562         EFSYS_ASSERT3U(enp->en_rx_qcount + 1, <, encp->enc_rxq_limit);
1563
1564         EFX_STATIC_ASSERT(ISP2(EFX_RXQ_MAXNDESCS));
1565         EFX_STATIC_ASSERT(ISP2(EFX_RXQ_MINNDESCS));
1566
1567         if (!ISP2(ndescs) ||
1568             (ndescs < EFX_RXQ_MINNDESCS) || (ndescs > EFX_RXQ_MAXNDESCS)) {
1569                 rc = EINVAL;
1570                 goto fail1;
1571         }
1572         if (index >= encp->enc_rxq_limit) {
1573                 rc = EINVAL;
1574                 goto fail2;
1575         }
1576         for (size = 0; (1 << size) <= (EFX_RXQ_MAXNDESCS / EFX_RXQ_MINNDESCS);
1577             size++)
1578                 if ((1 << size) == (int)(ndescs / EFX_RXQ_MINNDESCS))
1579                         break;
1580         if (id + (1 << size) >= encp->enc_buftbl_limit) {
1581                 rc = EINVAL;
1582                 goto fail3;
1583         }
1584
1585         switch (type) {
1586         case EFX_RXQ_TYPE_DEFAULT:
1587                 break;
1588
1589         default:
1590                 rc = EINVAL;
1591                 goto fail4;
1592         }
1593
1594         if (flags & EFX_RXQ_FLAG_SCATTER) {
1595 #if EFSYS_OPT_RX_SCATTER
1596                 jumbo = B_TRUE;
1597 #else
1598                 rc = EINVAL;
1599                 goto fail5;
1600 #endif  /* EFSYS_OPT_RX_SCATTER */
1601         }
1602
1603         /* Set up the new descriptor queue */
1604         EFX_POPULATE_OWORD_7(oword,
1605             FRF_AZ_RX_DESCQ_BUF_BASE_ID, id,
1606             FRF_AZ_RX_DESCQ_EVQ_ID, eep->ee_index,
1607             FRF_AZ_RX_DESCQ_OWNER_ID, 0,
1608             FRF_AZ_RX_DESCQ_LABEL, label,
1609             FRF_AZ_RX_DESCQ_SIZE, size,
1610             FRF_AZ_RX_DESCQ_TYPE, 0,
1611             FRF_AZ_RX_DESCQ_JUMBO, jumbo);
1612
1613         EFX_BAR_TBL_WRITEO(enp, FR_AZ_RX_DESC_PTR_TBL,
1614                             erp->er_index, &oword, B_TRUE);
1615
1616         return (0);
1617
1618 #if !EFSYS_OPT_RX_SCATTER
1619 fail5:
1620         EFSYS_PROBE(fail5);
1621 #endif
1622 fail4:
1623         EFSYS_PROBE(fail4);
1624 fail3:
1625         EFSYS_PROBE(fail3);
1626 fail2:
1627         EFSYS_PROBE(fail2);
1628 fail1:
1629         EFSYS_PROBE1(fail1, efx_rc_t, rc);
1630
1631         return (rc);
1632 }
1633
1634 static          void
1635 siena_rx_qdestroy(
1636         __in    efx_rxq_t *erp)
1637 {
1638         efx_nic_t *enp = erp->er_enp;
1639         efx_oword_t oword;
1640
1641         EFSYS_ASSERT(enp->en_rx_qcount != 0);
1642         --enp->en_rx_qcount;
1643
1644         /* Purge descriptor queue */
1645         EFX_ZERO_OWORD(oword);
1646
1647         EFX_BAR_TBL_WRITEO(enp, FR_AZ_RX_DESC_PTR_TBL,
1648                             erp->er_index, &oword, B_TRUE);
1649
1650         /* Free the RXQ object */
1651         EFSYS_KMEM_FREE(enp->en_esip, sizeof (efx_rxq_t), erp);
1652 }
1653
1654 static          void
1655 siena_rx_fini(
1656         __in    efx_nic_t *enp)
1657 {
1658         _NOTE(ARGUNUSED(enp))
1659 }
1660
1661 #endif /* EFSYS_OPT_SIENA */