drivers/common/sfc_efx/base/efx_rx.c

   1 /* SPDX-License-Identifier: BSD-3-Clause
   2  *
   3  * Copyright(c) 2019-2020 Xilinx, Inc.
   4  * Copyright(c) 2007-2019 Solarflare Communications Inc.
   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_opt        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 EFX_OPTS_EF10()
 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  /* EFX_OPTS_EF10() */
 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         __out_ecount_part(max_nflags, *nflagsp) unsigned int *flagsp,
 302         __in                                    unsigned int max_nflags,
 303         __out                                   unsigned int *nflagsp)
 304 {
 305         efx_nic_cfg_t *encp = &enp->en_nic_cfg;
 306         unsigned int nflags = 0;
 307         efx_rc_t rc;
 308
 309         if (flagsp == NULL || nflagsp == NULL) {
 310                 rc = EINVAL;
 311                 goto fail1;
 312         }
 313
 314         if ((encp->enc_rx_scale_hash_alg_mask & (1U << hash_alg)) == 0) {
 315                 nflags = 0;
 316                 goto done;
 317         }
 318
 319         /* Helper to add flags word to flags array without buffer overflow */
 320 #define INSERT_FLAGS(_flags)                    \
 321         do {                                    \
 322                 if (nflags >= max_nflags) {     \
 323                         rc = E2BIG;             \
 324                         goto fail2;             \
 325                 }                               \
 326                 *(flagsp + nflags) = (_flags);  \
 327                 nflags++;                       \
 328                                                 \
 329                 _NOTE(CONSTANTCONDITION)        \
 330         } while (B_FALSE)
 331
 332         if (encp->enc_rx_scale_l4_hash_supported != B_FALSE) {
 333                 INSERT_FLAGS(EFX_RX_HASH(IPV4_TCP, 4TUPLE));
 334                 INSERT_FLAGS(EFX_RX_HASH(IPV6_TCP, 4TUPLE));
 335         }
 336
 337         if ((encp->enc_rx_scale_l4_hash_supported != B_FALSE) &&
 338             (encp->enc_rx_scale_additional_modes_supported != B_FALSE)) {
 339                 INSERT_FLAGS(EFX_RX_HASH(IPV4_TCP, 2TUPLE_DST));
 340                 INSERT_FLAGS(EFX_RX_HASH(IPV4_TCP, 2TUPLE_SRC));
 341
 342                 INSERT_FLAGS(EFX_RX_HASH(IPV6_TCP, 2TUPLE_DST));
 343                 INSERT_FLAGS(EFX_RX_HASH(IPV6_TCP, 2TUPLE_SRC));
 344
 345                 INSERT_FLAGS(EFX_RX_HASH(IPV4_UDP, 4TUPLE));
 346                 INSERT_FLAGS(EFX_RX_HASH(IPV4_UDP, 2TUPLE_DST));
 347                 INSERT_FLAGS(EFX_RX_HASH(IPV4_UDP, 2TUPLE_SRC));
 348
 349                 INSERT_FLAGS(EFX_RX_HASH(IPV6_UDP, 4TUPLE));
 350                 INSERT_FLAGS(EFX_RX_HASH(IPV6_UDP, 2TUPLE_DST));
 351                 INSERT_FLAGS(EFX_RX_HASH(IPV6_UDP, 2TUPLE_SRC));
 352         }
 353
 354         INSERT_FLAGS(EFX_RX_HASH(IPV4_TCP, 2TUPLE));
 355         INSERT_FLAGS(EFX_RX_HASH(IPV6_TCP, 2TUPLE));
 356
 357         INSERT_FLAGS(EFX_RX_HASH(IPV4, 2TUPLE));
 358         INSERT_FLAGS(EFX_RX_HASH(IPV6, 2TUPLE));
 359
 360         if (encp->enc_rx_scale_additional_modes_supported != B_FALSE) {
 361                 INSERT_FLAGS(EFX_RX_HASH(IPV4_TCP, 1TUPLE_DST));
 362                 INSERT_FLAGS(EFX_RX_HASH(IPV4_TCP, 1TUPLE_SRC));
 363
 364                 INSERT_FLAGS(EFX_RX_HASH(IPV6_TCP, 1TUPLE_DST));
 365                 INSERT_FLAGS(EFX_RX_HASH(IPV6_TCP, 1TUPLE_SRC));
 366
 367                 INSERT_FLAGS(EFX_RX_HASH(IPV4_UDP, 2TUPLE));
 368                 INSERT_FLAGS(EFX_RX_HASH(IPV4_UDP, 1TUPLE_DST));
 369                 INSERT_FLAGS(EFX_RX_HASH(IPV4_UDP, 1TUPLE_SRC));
 370
 371                 INSERT_FLAGS(EFX_RX_HASH(IPV6_UDP, 2TUPLE));
 372                 INSERT_FLAGS(EFX_RX_HASH(IPV6_UDP, 1TUPLE_DST));
 373                 INSERT_FLAGS(EFX_RX_HASH(IPV6_UDP, 1TUPLE_SRC));
 374
 375                 INSERT_FLAGS(EFX_RX_HASH(IPV4, 1TUPLE_DST));
 376                 INSERT_FLAGS(EFX_RX_HASH(IPV4, 1TUPLE_SRC));
 377
 378                 INSERT_FLAGS(EFX_RX_HASH(IPV6, 1TUPLE_DST));
 379                 INSERT_FLAGS(EFX_RX_HASH(IPV6, 1TUPLE_SRC));
 380         }
 381
 382         INSERT_FLAGS(EFX_RX_HASH(IPV4_TCP, DISABLE));
 383         INSERT_FLAGS(EFX_RX_HASH(IPV6_TCP, DISABLE));
 384
 385         INSERT_FLAGS(EFX_RX_HASH(IPV4_UDP, DISABLE));
 386         INSERT_FLAGS(EFX_RX_HASH(IPV6_UDP, DISABLE));
 387
 388         INSERT_FLAGS(EFX_RX_HASH(IPV4, DISABLE));
 389         INSERT_FLAGS(EFX_RX_HASH(IPV6, DISABLE));
 390
 391 #undef INSERT_FLAGS
 392
 393 done:
 394         *nflagsp = nflags;
 395         return (0);
 396
 397 fail2:
 398         EFSYS_PROBE(fail2);
 399 fail1:
 400         EFSYS_PROBE1(fail1, efx_rc_t, rc);
 401
 402         return (rc);
 403 }
 404
 405         __checkReturn   efx_rc_t
 406 efx_rx_hash_default_support_get(
 407         __in            efx_nic_t *enp,
 408         __out           efx_rx_hash_support_t *supportp)
 409 {
 410         efx_rc_t rc;
 411
 412         EFSYS_ASSERT3U(enp->en_magic, ==, EFX_NIC_MAGIC);
 413         EFSYS_ASSERT3U(enp->en_mod_flags, &, EFX_MOD_RX);
 414
 415         if (supportp == NULL) {
 416                 rc = EINVAL;
 417                 goto fail1;
 418         }
 419
 420         /*
 421          * Report the hashing support the client gets by default if it
 422          * does not allocate an RSS context itself.
 423          */
 424         *supportp = enp->en_hash_support;
 425
 426         return (0);
 427
 428 fail1:
 429         EFSYS_PROBE1(fail1, efx_rc_t, rc);
 430
 431         return (rc);
 432 }
 433
 434         __checkReturn   efx_rc_t
 435 efx_rx_scale_default_support_get(
 436         __in            efx_nic_t *enp,
 437         __out           efx_rx_scale_context_type_t *typep)
 438 {
 439         efx_rc_t rc;
 440
 441         EFSYS_ASSERT3U(enp->en_magic, ==, EFX_NIC_MAGIC);
 442         EFSYS_ASSERT3U(enp->en_mod_flags, &, EFX_MOD_RX);
 443
 444         if (typep == NULL) {
 445                 rc = EINVAL;
 446                 goto fail1;
 447         }
 448
 449         /*
 450          * Report the RSS support the client gets by default if it
 451          * does not allocate an RSS context itself.
 452          */
 453         *typep = enp->en_rss_context_type;
 454
 455         return (0);
 456
 457 fail1:
 458         EFSYS_PROBE1(fail1, efx_rc_t, rc);
 459
 460         return (rc);
 461 }
 462 #endif  /* EFSYS_OPT_RX_SCALE */
 463
 464 #if EFSYS_OPT_RX_SCALE
 465         __checkReturn   efx_rc_t
 466 efx_rx_scale_context_alloc(
 467         __in            efx_nic_t *enp,
 468         __in            efx_rx_scale_context_type_t type,
 469         __in            uint32_t num_queues,
 470         __out           uint32_t *rss_contextp)
 471 {
 472         const efx_rx_ops_t *erxop = enp->en_erxop;
 473         efx_rc_t rc;
 474
 475         EFSYS_ASSERT3U(enp->en_magic, ==, EFX_NIC_MAGIC);
 476         EFSYS_ASSERT3U(enp->en_mod_flags, &, EFX_MOD_RX);
 477
 478         if (erxop->erxo_scale_context_alloc == NULL) {
 479                 rc = ENOTSUP;
 480                 goto fail1;
 481         }
 482         if ((rc = erxop->erxo_scale_context_alloc(enp, type,
 483                             num_queues, rss_contextp)) != 0) {
 484                 goto fail2;
 485         }
 486
 487         return (0);
 488
 489 fail2:
 490         EFSYS_PROBE(fail2);
 491 fail1:
 492         EFSYS_PROBE1(fail1, efx_rc_t, rc);
 493         return (rc);
 494 }
 495 #endif  /* EFSYS_OPT_RX_SCALE */
 496
 497 #if EFSYS_OPT_RX_SCALE
 498         __checkReturn   efx_rc_t
 499 efx_rx_scale_context_free(
 500         __in            efx_nic_t *enp,
 501         __in            uint32_t rss_context)
 502 {
 503         const efx_rx_ops_t *erxop = enp->en_erxop;
 504         efx_rc_t rc;
 505
 506         EFSYS_ASSERT3U(enp->en_magic, ==, EFX_NIC_MAGIC);
 507         EFSYS_ASSERT3U(enp->en_mod_flags, &, EFX_MOD_RX);
 508
 509         if (erxop->erxo_scale_context_free == NULL) {
 510                 rc = ENOTSUP;
 511                 goto fail1;
 512         }
 513         if ((rc = erxop->erxo_scale_context_free(enp, rss_context)) != 0)
 514                 goto fail2;
 515
 516         return (0);
 517
 518 fail2:
 519         EFSYS_PROBE(fail2);
 520 fail1:
 521         EFSYS_PROBE1(fail1, efx_rc_t, rc);
 522         return (rc);
 523 }
 524 #endif  /* EFSYS_OPT_RX_SCALE */
 525
 526 #if EFSYS_OPT_RX_SCALE
 527         __checkReturn   efx_rc_t
 528 efx_rx_scale_mode_set(
 529         __in            efx_nic_t *enp,
 530         __in            uint32_t rss_context,
 531         __in            efx_rx_hash_alg_t alg,
 532         __in            efx_rx_hash_type_t type,
 533         __in            boolean_t insert)
 534 {
 535         efx_nic_cfg_t *encp = &enp->en_nic_cfg;
 536         const efx_rx_ops_t *erxop = enp->en_erxop;
 537         efx_rx_hash_type_t type_check;
 538         unsigned int i;
 539         efx_rc_t rc;
 540
 541         EFSYS_ASSERT3U(enp->en_magic, ==, EFX_NIC_MAGIC);
 542         EFSYS_ASSERT3U(enp->en_mod_flags, &, EFX_MOD_RX);
 543
 544         /*
 545          * Legacy flags and modern bits cannot be
 546          * used at the same time in the hash type.
 547          */
 548         if ((type & EFX_RX_HASH_LEGACY_MASK) &&
 549             (type & ~EFX_RX_HASH_LEGACY_MASK)) {
 550                 rc = EINVAL;
 551                 goto fail1;
 552         }
 553
 554         /*
 555          * If RSS hash type is represented by additional bits
 556          * in the value, the latter need to be verified since
 557          * not all bit combinations are valid RSS modes. Also,
 558          * depending on the firmware, some valid combinations
 559          * may be unsupported. Discern additional bits in the
 560          * type value and try to recognise valid combinations.
 561          * If some bits remain unrecognised, report the error.
 562          */
 563         type_check = type & ~EFX_RX_HASH_LEGACY_MASK;
 564         if (type_check != 0) {
 565                 unsigned int type_flags[EFX_RX_HASH_NFLAGS];
 566                 unsigned int type_nflags;
 567
 568                 rc = efx_rx_scale_hash_flags_get(enp, alg, type_flags,
 569                                     EFX_ARRAY_SIZE(type_flags), &type_nflags);
 570                 if (rc != 0)
 571                         goto fail2;
 572
 573                 for (i = 0; i < type_nflags; ++i) {
 574                         if ((type_check & type_flags[i]) == type_flags[i])
 575                                 type_check &= ~(type_flags[i]);
 576                 }
 577
 578                 if (type_check != 0) {
 579                         rc = EINVAL;
 580                         goto fail3;
 581                 }
 582         }
 583
 584         /*
 585          * Translate EFX_RX_HASH() flags to their legacy counterparts
 586          * provided that the FW claims no support for additional modes.
 587          */
 588         if (encp->enc_rx_scale_additional_modes_supported == B_FALSE) {
 589                 efx_rx_hash_type_t t_ipv4 = EFX_RX_HASH(IPV4, 2TUPLE) |
 590                                             EFX_RX_HASH(IPV4_TCP, 2TUPLE);
 591                 efx_rx_hash_type_t t_ipv6 = EFX_RX_HASH(IPV6, 2TUPLE) |
 592                                             EFX_RX_HASH(IPV6_TCP, 2TUPLE);
 593                 efx_rx_hash_type_t t_ipv4_tcp = EFX_RX_HASH(IPV4_TCP, 4TUPLE);
 594                 efx_rx_hash_type_t t_ipv6_tcp = EFX_RX_HASH(IPV6_TCP, 4TUPLE);
 595
 596                 if ((type & t_ipv4) == t_ipv4)
 597                         type |= EFX_RX_HASH_IPV4;
 598                 if ((type & t_ipv6) == t_ipv6)
 599                         type |= EFX_RX_HASH_IPV6;
 600
 601                 if (encp->enc_rx_scale_l4_hash_supported == B_TRUE) {
 602                         if ((type & t_ipv4_tcp) == t_ipv4_tcp)
 603                                 type |= EFX_RX_HASH_TCPIPV4;
 604                         if ((type & t_ipv6_tcp) == t_ipv6_tcp)
 605                                 type |= EFX_RX_HASH_TCPIPV6;
 606                 }
 607
 608                 type &= EFX_RX_HASH_LEGACY_MASK;
 609         }
 610
 611         if (erxop->erxo_scale_mode_set != NULL) {
 612                 if ((rc = erxop->erxo_scale_mode_set(enp, rss_context, alg,
 613                             type, insert)) != 0)
 614                         goto fail4;
 615         }
 616
 617         return (0);
 618
 619 fail4:
 620         EFSYS_PROBE(fail4);
 621 fail3:
 622         EFSYS_PROBE(fail3);
 623 fail2:
 624         EFSYS_PROBE(fail2);
 625 fail1:
 626         EFSYS_PROBE1(fail1, efx_rc_t, rc);
 627         return (rc);
 628 }
 629 #endif  /* EFSYS_OPT_RX_SCALE */
 630
 631 #if EFSYS_OPT_RX_SCALE
 632         __checkReturn   efx_rc_t
 633 efx_rx_scale_key_set(
 634         __in            efx_nic_t *enp,
 635         __in            uint32_t rss_context,
 636         __in_ecount(n)  uint8_t *key,
 637         __in            size_t n)
 638 {
 639         const efx_rx_ops_t *erxop = enp->en_erxop;
 640         efx_rc_t rc;
 641
 642         EFSYS_ASSERT3U(enp->en_magic, ==, EFX_NIC_MAGIC);
 643         EFSYS_ASSERT3U(enp->en_mod_flags, &, EFX_MOD_RX);
 644
 645         if ((rc = erxop->erxo_scale_key_set(enp, rss_context, key, n)) != 0)
 646                 goto fail1;
 647
 648         return (0);
 649
 650 fail1:
 651         EFSYS_PROBE1(fail1, efx_rc_t, rc);
 652
 653         return (rc);
 654 }
 655 #endif  /* EFSYS_OPT_RX_SCALE */
 656
 657 #if EFSYS_OPT_RX_SCALE
 658         __checkReturn   efx_rc_t
 659 efx_rx_scale_tbl_set(
 660         __in            efx_nic_t *enp,
 661         __in            uint32_t rss_context,
 662         __in_ecount(n)  unsigned int *table,
 663         __in            size_t n)
 664 {
 665         const efx_rx_ops_t *erxop = enp->en_erxop;
 666         efx_rc_t rc;
 667
 668         EFSYS_ASSERT3U(enp->en_magic, ==, EFX_NIC_MAGIC);
 669         EFSYS_ASSERT3U(enp->en_mod_flags, &, EFX_MOD_RX);
 670
 671         if ((rc = erxop->erxo_scale_tbl_set(enp, rss_context, table, n)) != 0)
 672                 goto fail1;
 673
 674         return (0);
 675
 676 fail1:
 677         EFSYS_PROBE1(fail1, efx_rc_t, rc);
 678
 679         return (rc);
 680 }
 681 #endif  /* EFSYS_OPT_RX_SCALE */
 682
 683                                 void
 684 efx_rx_qpost(
 685         __in                    efx_rxq_t *erp,
 686         __in_ecount(ndescs)     efsys_dma_addr_t *addrp,
 687         __in                    size_t size,
 688         __in                    unsigned int ndescs,
 689         __in                    unsigned int completed,
 690         __in                    unsigned int added)
 691 {
 692         efx_nic_t *enp = erp->er_enp;
 693         const efx_rx_ops_t *erxop = enp->en_erxop;
 694
 695         EFSYS_ASSERT3U(erp->er_magic, ==, EFX_RXQ_MAGIC);
 696         EFSYS_ASSERT(erp->er_buf_size == 0 || size == erp->er_buf_size);
 697
 698         erxop->erxo_qpost(erp, addrp, size, ndescs, completed, added);
 699 }
 700
 701 #if EFSYS_OPT_RX_PACKED_STREAM
 702
 703                         void
 704 efx_rx_qpush_ps_credits(
 705         __in            efx_rxq_t *erp)
 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_ps_credits(erp);
 713 }
 714
 715         __checkReturn   uint8_t *
 716 efx_rx_qps_packet_info(
 717         __in            efx_rxq_t *erp,
 718         __in            uint8_t *buffer,
 719         __in            uint32_t buffer_length,
 720         __in            uint32_t current_offset,
 721         __out           uint16_t *lengthp,
 722         __out           uint32_t *next_offsetp,
 723         __out           uint32_t *timestamp)
 724 {
 725         efx_nic_t *enp = erp->er_enp;
 726         const efx_rx_ops_t *erxop = enp->en_erxop;
 727
 728         return (erxop->erxo_qps_packet_info(erp, buffer,
 729                 buffer_length, current_offset, lengthp,
 730                 next_offsetp, timestamp));
 731 }
 732
 733 #endif /* EFSYS_OPT_RX_PACKED_STREAM */
 734
 735                         void
 736 efx_rx_qpush(
 737         __in            efx_rxq_t *erp,
 738         __in            unsigned int added,
 739         __inout         unsigned int *pushedp)
 740 {
 741         efx_nic_t *enp = erp->er_enp;
 742         const efx_rx_ops_t *erxop = enp->en_erxop;
 743
 744         EFSYS_ASSERT3U(erp->er_magic, ==, EFX_RXQ_MAGIC);
 745
 746         erxop->erxo_qpush(erp, added, pushedp);
 747 }
 748
 749         __checkReturn   efx_rc_t
 750 efx_rx_qflush(
 751         __in            efx_rxq_t *erp)
 752 {
 753         efx_nic_t *enp = erp->er_enp;
 754         const efx_rx_ops_t *erxop = enp->en_erxop;
 755         efx_rc_t rc;
 756
 757         EFSYS_ASSERT3U(erp->er_magic, ==, EFX_RXQ_MAGIC);
 758
 759         if ((rc = erxop->erxo_qflush(erp)) != 0)
 760                 goto fail1;
 761
 762         return (0);
 763
 764 fail1:
 765         EFSYS_PROBE1(fail1, efx_rc_t, rc);
 766
 767         return (rc);
 768 }
 769
 770         __checkReturn   size_t
 771 efx_rxq_size(
 772         __in    const efx_nic_t *enp,
 773         __in    unsigned int ndescs)
 774 {
 775         const efx_nic_cfg_t *encp = efx_nic_cfg_get(enp);
 776
 777         return (ndescs * encp->enc_rx_desc_size);
 778 }
 779
 780         __checkReturn   unsigned int
 781 efx_rxq_nbufs(
 782         __in    const efx_nic_t *enp,
 783         __in    unsigned int ndescs)
 784 {
 785         return (EFX_DIV_ROUND_UP(efx_rxq_size(enp, ndescs), EFX_BUF_SIZE));
 786 }
 787
 788                         void
 789 efx_rx_qenable(
 790         __in            efx_rxq_t *erp)
 791 {
 792         efx_nic_t *enp = erp->er_enp;
 793         const efx_rx_ops_t *erxop = enp->en_erxop;
 794
 795         EFSYS_ASSERT3U(erp->er_magic, ==, EFX_RXQ_MAGIC);
 796
 797         erxop->erxo_qenable(erp);
 798 }
 799
 800 static  __checkReturn   efx_rc_t
 801 efx_rx_qcreate_internal(
 802         __in            efx_nic_t *enp,
 803         __in            unsigned int index,
 804         __in            unsigned int label,
 805         __in            efx_rxq_type_t type,
 806         __in_opt        const efx_rxq_type_data_t *type_data,
 807         __in            efsys_mem_t *esmp,
 808         __in            size_t ndescs,
 809         __in            uint32_t id,
 810         __in            unsigned int flags,
 811         __in            efx_evq_t *eep,
 812         __deref_out     efx_rxq_t **erpp)
 813 {
 814         const efx_rx_ops_t *erxop = enp->en_erxop;
 815         efx_rxq_t *erp;
 816         const efx_nic_cfg_t *encp = efx_nic_cfg_get(enp);
 817         efx_rc_t rc;
 818
 819         EFSYS_ASSERT3U(enp->en_magic, ==, EFX_NIC_MAGIC);
 820         EFSYS_ASSERT3U(enp->en_mod_flags, &, EFX_MOD_RX);
 821
 822         EFSYS_ASSERT3U(enp->en_rx_qcount + 1, <, encp->enc_rxq_limit);
 823
 824         EFSYS_ASSERT(ISP2(encp->enc_rxq_max_ndescs));
 825         EFSYS_ASSERT(ISP2(encp->enc_rxq_min_ndescs));
 826
 827         if (!ISP2(ndescs) ||
 828             ndescs < encp->enc_rxq_min_ndescs ||
 829             ndescs > encp->enc_rxq_max_ndescs) {
 830                 rc = EINVAL;
 831                 goto fail1;
 832         }
 833
 834         /* Allocate an RXQ object */
 835         EFSYS_KMEM_ALLOC(enp->en_esip, sizeof (efx_rxq_t), erp);
 836
 837         if (erp == NULL) {
 838                 rc = ENOMEM;
 839                 goto fail2;
 840         }
 841
 842         erp->er_magic = EFX_RXQ_MAGIC;
 843         erp->er_enp = enp;
 844         erp->er_index = index;
 845         erp->er_mask = ndescs - 1;
 846         erp->er_esmp = esmp;
 847
 848         if ((rc = erxop->erxo_qcreate(enp, index, label, type, type_data, esmp,
 849             ndescs, id, flags, eep, erp)) != 0)
 850                 goto fail3;
 851
 852         enp->en_rx_qcount++;
 853         *erpp = erp;
 854
 855         return (0);
 856
 857 fail3:
 858         EFSYS_PROBE(fail3);
 859
 860         EFSYS_KMEM_FREE(enp->en_esip, sizeof (efx_rxq_t), erp);
 861 fail2:
 862         EFSYS_PROBE(fail2);
 863 fail1:
 864         EFSYS_PROBE1(fail1, efx_rc_t, rc);
 865
 866         return (rc);
 867 }
 868
 869         __checkReturn   efx_rc_t
 870 efx_rx_qcreate(
 871         __in            efx_nic_t *enp,
 872         __in            unsigned int index,
 873         __in            unsigned int label,
 874         __in            efx_rxq_type_t type,
 875         __in            size_t buf_size,
 876         __in            efsys_mem_t *esmp,
 877         __in            size_t ndescs,
 878         __in            uint32_t id,
 879         __in            unsigned int flags,
 880         __in            efx_evq_t *eep,
 881         __deref_out     efx_rxq_t **erpp)
 882 {
 883         efx_rxq_type_data_t type_data;
 884
 885         memset(&type_data, 0, sizeof (type_data));
 886
 887         type_data.ertd_default.ed_buf_size = buf_size;
 888
 889         return efx_rx_qcreate_internal(enp, index, label, type, &type_data,
 890             esmp, ndescs, id, flags, eep, erpp);
 891 }
 892
 893 #if EFSYS_OPT_RX_PACKED_STREAM
 894
 895         __checkReturn   efx_rc_t
 896 efx_rx_qcreate_packed_stream(
 897         __in            efx_nic_t *enp,
 898         __in            unsigned int index,
 899         __in            unsigned int label,
 900         __in            uint32_t ps_buf_size,
 901         __in            efsys_mem_t *esmp,
 902         __in            size_t ndescs,
 903         __in            efx_evq_t *eep,
 904         __deref_out     efx_rxq_t **erpp)
 905 {
 906         efx_rxq_type_data_t type_data;
 907
 908         memset(&type_data, 0, sizeof (type_data));
 909
 910         type_data.ertd_packed_stream.eps_buf_size = ps_buf_size;
 911
 912         return efx_rx_qcreate_internal(enp, index, label,
 913             EFX_RXQ_TYPE_PACKED_STREAM, &type_data, esmp, ndescs,
 914             0 /* id unused on EF10 */, EFX_RXQ_FLAG_NONE, eep, erpp);
 915 }
 916
 917 #endif
 918
 919 #if EFSYS_OPT_RX_ES_SUPER_BUFFER
 920
 921         __checkReturn   efx_rc_t
 922 efx_rx_qcreate_es_super_buffer(
 923         __in            efx_nic_t *enp,
 924         __in            unsigned int index,
 925         __in            unsigned int label,
 926         __in            uint32_t n_bufs_per_desc,
 927         __in            uint32_t max_dma_len,
 928         __in            uint32_t buf_stride,
 929         __in            uint32_t hol_block_timeout,
 930         __in            efsys_mem_t *esmp,
 931         __in            size_t ndescs,
 932         __in            unsigned int flags,
 933         __in            efx_evq_t *eep,
 934         __deref_out     efx_rxq_t **erpp)
 935 {
 936         efx_rc_t rc;
 937         efx_rxq_type_data_t type_data;
 938
 939         if (hol_block_timeout > EFX_RXQ_ES_SUPER_BUFFER_HOL_BLOCK_MAX) {
 940                 rc = EINVAL;
 941                 goto fail1;
 942         }
 943
 944         memset(&type_data, 0, sizeof (type_data));
 945
 946         type_data.ertd_es_super_buffer.eessb_bufs_per_desc = n_bufs_per_desc;
 947         type_data.ertd_es_super_buffer.eessb_max_dma_len = max_dma_len;
 948         type_data.ertd_es_super_buffer.eessb_buf_stride = buf_stride;
 949         type_data.ertd_es_super_buffer.eessb_hol_block_timeout =
 950             hol_block_timeout;
 951
 952         rc = efx_rx_qcreate_internal(enp, index, label,
 953             EFX_RXQ_TYPE_ES_SUPER_BUFFER, &type_data, esmp, ndescs,
 954             0 /* id unused on EF10 */, flags, eep, erpp);
 955         if (rc != 0)
 956                 goto fail2;
 957
 958         return (0);
 959
 960 fail2:
 961         EFSYS_PROBE(fail2);
 962 fail1:
 963         EFSYS_PROBE1(fail1, efx_rc_t, rc);
 964
 965         return (rc);
 966 }
 967
 968 #endif
 969
 970
 971                         void
 972 efx_rx_qdestroy(
 973         __in            efx_rxq_t *erp)
 974 {
 975         efx_nic_t *enp = erp->er_enp;
 976         const efx_rx_ops_t *erxop = enp->en_erxop;
 977
 978         EFSYS_ASSERT3U(erp->er_magic, ==, EFX_RXQ_MAGIC);
 979
 980         EFSYS_ASSERT(enp->en_rx_qcount != 0);
 981         --enp->en_rx_qcount;
 982
 983         erxop->erxo_qdestroy(erp);
 984
 985         /* Free the RXQ object */
 986         EFSYS_KMEM_FREE(enp->en_esip, sizeof (efx_rxq_t), erp);
 987 }
 988
 989         __checkReturn   efx_rc_t
 990 efx_pseudo_hdr_pkt_length_get(
 991         __in            efx_rxq_t *erp,
 992         __in            uint8_t *buffer,
 993         __out           uint16_t *lengthp)
 994 {
 995         efx_nic_t *enp = erp->er_enp;
 996         const efx_rx_ops_t *erxop = enp->en_erxop;
 997
 998         EFSYS_ASSERT3U(erp->er_magic, ==, EFX_RXQ_MAGIC);
 999
1000         return (erxop->erxo_prefix_pktlen(enp, buffer, lengthp));
1001 }
1002
1003 #if EFSYS_OPT_RX_SCALE
1004         __checkReturn   uint32_t
1005 efx_pseudo_hdr_hash_get(
1006         __in            efx_rxq_t *erp,
1007         __in            efx_rx_hash_alg_t func,
1008         __in            uint8_t *buffer)
1009 {
1010         efx_nic_t *enp = erp->er_enp;
1011         const efx_rx_ops_t *erxop = enp->en_erxop;
1012
1013         EFSYS_ASSERT3U(erp->er_magic, ==, EFX_RXQ_MAGIC);
1014
1015         EFSYS_ASSERT3U(enp->en_hash_support, ==, EFX_RX_HASH_AVAILABLE);
1016         return (erxop->erxo_prefix_hash(enp, func, buffer));
1017 }
1018 #endif  /* EFSYS_OPT_RX_SCALE */
1019
1020 #if EFSYS_OPT_SIENA
1021
1022 static  __checkReturn   efx_rc_t
1023 siena_rx_init(
1024         __in            efx_nic_t *enp)
1025 {
1026         efx_oword_t oword;
1027         unsigned int index;
1028
1029         EFX_BAR_READO(enp, FR_AZ_RX_CFG_REG, &oword);
1030
1031         EFX_SET_OWORD_FIELD(oword, FRF_BZ_RX_DESC_PUSH_EN, 0);
1032         EFX_SET_OWORD_FIELD(oword, FRF_BZ_RX_HASH_ALG, 0);
1033         EFX_SET_OWORD_FIELD(oword, FRF_BZ_RX_IP_HASH, 0);
1034         EFX_SET_OWORD_FIELD(oword, FRF_BZ_RX_TCP_SUP, 0);
1035         EFX_SET_OWORD_FIELD(oword, FRF_BZ_RX_HASH_INSRT_HDR, 0);
1036         EFX_SET_OWORD_FIELD(oword, FRF_BZ_RX_USR_BUF_SIZE, 0x3000 / 32);
1037         EFX_BAR_WRITEO(enp, FR_AZ_RX_CFG_REG, &oword);
1038
1039         /* Zero the RSS table */
1040         for (index = 0; index < FR_BZ_RX_INDIRECTION_TBL_ROWS;
1041             index++) {
1042                 EFX_ZERO_OWORD(oword);
1043                 EFX_BAR_TBL_WRITEO(enp, FR_BZ_RX_INDIRECTION_TBL,
1044                                     index, &oword, B_TRUE);
1045         }
1046
1047 #if EFSYS_OPT_RX_SCALE
1048         /* The RSS key and indirection table are writable. */
1049         enp->en_rss_context_type = EFX_RX_SCALE_EXCLUSIVE;
1050
1051         /* Hardware can insert RX hash with/without RSS */
1052         enp->en_hash_support = EFX_RX_HASH_AVAILABLE;
1053 #endif  /* EFSYS_OPT_RX_SCALE */
1054
1055         return (0);
1056 }
1057
1058 #if EFSYS_OPT_RX_SCATTER
1059 static  __checkReturn   efx_rc_t
1060 siena_rx_scatter_enable(
1061         __in            efx_nic_t *enp,
1062         __in            unsigned int buf_size)
1063 {
1064         unsigned int nbuf32;
1065         efx_oword_t oword;
1066         efx_rc_t rc;
1067
1068         nbuf32 = buf_size / 32;
1069         if ((nbuf32 == 0) ||
1070             (nbuf32 >= (1 << FRF_BZ_RX_USR_BUF_SIZE_WIDTH)) ||
1071             ((buf_size % 32) != 0)) {
1072                 rc = EINVAL;
1073                 goto fail1;
1074         }
1075
1076         if (enp->en_rx_qcount > 0) {
1077                 rc = EBUSY;
1078                 goto fail2;
1079         }
1080
1081         /* Set scatter buffer size */
1082         EFX_BAR_READO(enp, FR_AZ_RX_CFG_REG, &oword);
1083         EFX_SET_OWORD_FIELD(oword, FRF_BZ_RX_USR_BUF_SIZE, nbuf32);
1084         EFX_BAR_WRITEO(enp, FR_AZ_RX_CFG_REG, &oword);
1085
1086         /* Enable scatter for packets not matching a filter */
1087         EFX_BAR_READO(enp, FR_AZ_RX_FILTER_CTL_REG, &oword);
1088         EFX_SET_OWORD_FIELD(oword, FRF_BZ_SCATTER_ENBL_NO_MATCH_Q, 1);
1089         EFX_BAR_WRITEO(enp, FR_AZ_RX_FILTER_CTL_REG, &oword);
1090
1091         return (0);
1092
1093 fail2:
1094         EFSYS_PROBE(fail2);
1095 fail1:
1096         EFSYS_PROBE1(fail1, efx_rc_t, rc);
1097
1098         return (rc);
1099 }
1100 #endif  /* EFSYS_OPT_RX_SCATTER */
1101
1102
1103 #define EFX_RX_LFSR_HASH(_enp, _insert)                                 \
1104         do {                                                            \
1105                 efx_oword_t oword;                                      \
1106                                                                         \
1107                 EFX_BAR_READO((_enp), FR_AZ_RX_CFG_REG, &oword);        \
1108                 EFX_SET_OWORD_FIELD(oword, FRF_BZ_RX_HASH_ALG, 0);      \
1109                 EFX_SET_OWORD_FIELD(oword, FRF_BZ_RX_IP_HASH, 0);       \
1110                 EFX_SET_OWORD_FIELD(oword, FRF_BZ_RX_TCP_SUP, 0);       \
1111                 EFX_SET_OWORD_FIELD(oword, FRF_BZ_RX_HASH_INSRT_HDR,    \
1112                     (_insert) ? 1 : 0);                                 \
1113                 EFX_BAR_WRITEO((_enp), FR_AZ_RX_CFG_REG, &oword);       \
1114                                                                         \
1115                 if ((_enp)->en_family == EFX_FAMILY_SIENA) {            \
1116                         EFX_BAR_READO((_enp), FR_CZ_RX_RSS_IPV6_REG3,   \
1117                             &oword);                                    \
1118                         EFX_SET_OWORD_FIELD(oword,                      \
1119                             FRF_CZ_RX_RSS_IPV6_THASH_ENABLE, 0);        \
1120                         EFX_BAR_WRITEO((_enp), FR_CZ_RX_RSS_IPV6_REG3,  \
1121                             &oword);                                    \
1122                 }                                                       \
1123                                                                         \
1124                 _NOTE(CONSTANTCONDITION)                                \
1125         } while (B_FALSE)
1126
1127 #define EFX_RX_TOEPLITZ_IPV4_HASH(_enp, _insert, _ip, _tcp)             \
1128         do {                                                            \
1129                 efx_oword_t oword;                                      \
1130                                                                         \
1131                 EFX_BAR_READO((_enp), FR_AZ_RX_CFG_REG, &oword);        \
1132                 EFX_SET_OWORD_FIELD(oword, FRF_BZ_RX_HASH_ALG, 1);      \
1133                 EFX_SET_OWORD_FIELD(oword, FRF_BZ_RX_IP_HASH,           \
1134                     (_ip) ? 1 : 0);                                     \
1135                 EFX_SET_OWORD_FIELD(oword, FRF_BZ_RX_TCP_SUP,           \
1136                     (_tcp) ? 0 : 1);                                    \
1137                 EFX_SET_OWORD_FIELD(oword, FRF_BZ_RX_HASH_INSRT_HDR,    \
1138                     (_insert) ? 1 : 0);                                 \
1139                 EFX_BAR_WRITEO((_enp), FR_AZ_RX_CFG_REG, &oword);       \
1140                                                                         \
1141                 _NOTE(CONSTANTCONDITION)                                \
1142         } while (B_FALSE)
1143
1144 #define EFX_RX_TOEPLITZ_IPV6_HASH(_enp, _ip, _tcp, _rc)                 \
1145         do {                                                            \
1146                 efx_oword_t oword;                                      \
1147                                                                         \
1148                 EFX_BAR_READO((_enp), FR_CZ_RX_RSS_IPV6_REG3, &oword);  \
1149                 EFX_SET_OWORD_FIELD(oword,                              \
1150                     FRF_CZ_RX_RSS_IPV6_THASH_ENABLE, 1);                \
1151                 EFX_SET_OWORD_FIELD(oword,                              \
1152                     FRF_CZ_RX_RSS_IPV6_IP_THASH_ENABLE, (_ip) ? 1 : 0); \
1153                 EFX_SET_OWORD_FIELD(oword,                              \
1154                     FRF_CZ_RX_RSS_IPV6_TCP_SUPPRESS, (_tcp) ? 0 : 1);   \
1155                 EFX_BAR_WRITEO((_enp), FR_CZ_RX_RSS_IPV6_REG3, &oword); \
1156                                                                         \
1157                 (_rc) = 0;                                              \
1158                                                                         \
1159                 _NOTE(CONSTANTCONDITION)                                \
1160         } while (B_FALSE)
1161
1162
1163 #if EFSYS_OPT_RX_SCALE
1164
1165 static  __checkReturn   efx_rc_t
1166 siena_rx_scale_mode_set(
1167         __in            efx_nic_t *enp,
1168         __in            uint32_t rss_context,
1169         __in            efx_rx_hash_alg_t alg,
1170         __in            efx_rx_hash_type_t type,
1171         __in            boolean_t insert)
1172 {
1173         efx_rc_t rc;
1174
1175         if (rss_context != EFX_RSS_CONTEXT_DEFAULT) {
1176                 rc = EINVAL;
1177                 goto fail1;
1178         }
1179
1180         switch (alg) {
1181         case EFX_RX_HASHALG_LFSR:
1182                 EFX_RX_LFSR_HASH(enp, insert);
1183                 break;
1184
1185         case EFX_RX_HASHALG_TOEPLITZ:
1186                 EFX_RX_TOEPLITZ_IPV4_HASH(enp, insert,
1187                     (type & EFX_RX_HASH_IPV4) ? B_TRUE : B_FALSE,
1188                     (type & EFX_RX_HASH_TCPIPV4) ? B_TRUE : B_FALSE);
1189
1190                 EFX_RX_TOEPLITZ_IPV6_HASH(enp,
1191                     (type & EFX_RX_HASH_IPV6) ? B_TRUE : B_FALSE,
1192                     (type & EFX_RX_HASH_TCPIPV6) ? B_TRUE : B_FALSE,
1193                     rc);
1194                 if (rc != 0)
1195                         goto fail2;
1196
1197                 break;
1198
1199         default:
1200                 rc = EINVAL;
1201                 goto fail3;
1202         }
1203
1204         return (0);
1205
1206 fail3:
1207         EFSYS_PROBE(fail3);
1208 fail2:
1209         EFSYS_PROBE(fail2);
1210 fail1:
1211         EFSYS_PROBE1(fail1, efx_rc_t, rc);
1212
1213         EFX_RX_LFSR_HASH(enp, B_FALSE);
1214
1215         return (rc);
1216 }
1217 #endif
1218
1219 #if EFSYS_OPT_RX_SCALE
1220 static  __checkReturn   efx_rc_t
1221 siena_rx_scale_key_set(
1222         __in            efx_nic_t *enp,
1223         __in            uint32_t rss_context,
1224         __in_ecount(n)  uint8_t *key,
1225         __in            size_t n)
1226 {
1227         efx_oword_t oword;
1228         unsigned int byte;
1229         unsigned int offset;
1230         efx_rc_t rc;
1231
1232         if (rss_context != EFX_RSS_CONTEXT_DEFAULT) {
1233                 rc = EINVAL;
1234                 goto fail1;
1235         }
1236
1237         byte = 0;
1238
1239         /* Write Toeplitz IPv4 hash key */
1240         EFX_ZERO_OWORD(oword);
1241         for (offset = (FRF_BZ_RX_RSS_TKEY_LBN + FRF_BZ_RX_RSS_TKEY_WIDTH) / 8;
1242             offset > 0 && byte < n;
1243             --offset)
1244                 oword.eo_u8[offset - 1] = key[byte++];
1245
1246         EFX_BAR_WRITEO(enp, FR_BZ_RX_RSS_TKEY_REG, &oword);
1247
1248         byte = 0;
1249
1250         /* Verify Toeplitz IPv4 hash key */
1251         EFX_BAR_READO(enp, FR_BZ_RX_RSS_TKEY_REG, &oword);
1252         for (offset = (FRF_BZ_RX_RSS_TKEY_LBN + FRF_BZ_RX_RSS_TKEY_WIDTH) / 8;
1253             offset > 0 && byte < n;
1254             --offset) {
1255                 if (oword.eo_u8[offset - 1] != key[byte++]) {
1256                         rc = EFAULT;
1257                         goto fail2;
1258                 }
1259         }
1260
1261         if ((enp->en_features & EFX_FEATURE_IPV6) == 0)
1262                 goto done;
1263
1264         byte = 0;
1265
1266         /* Write Toeplitz IPv6 hash key 3 */
1267         EFX_BAR_READO(enp, FR_CZ_RX_RSS_IPV6_REG3, &oword);
1268         for (offset = (FRF_CZ_RX_RSS_IPV6_TKEY_HI_LBN +
1269             FRF_CZ_RX_RSS_IPV6_TKEY_HI_WIDTH) / 8;
1270             offset > 0 && byte < n;
1271             --offset)
1272                 oword.eo_u8[offset - 1] = key[byte++];
1273
1274         EFX_BAR_WRITEO(enp, FR_CZ_RX_RSS_IPV6_REG3, &oword);
1275
1276         /* Write Toeplitz IPv6 hash key 2 */
1277         EFX_ZERO_OWORD(oword);
1278         for (offset = (FRF_CZ_RX_RSS_IPV6_TKEY_MID_LBN +
1279             FRF_CZ_RX_RSS_IPV6_TKEY_MID_WIDTH) / 8;
1280             offset > 0 && byte < n;
1281             --offset)
1282                 oword.eo_u8[offset - 1] = key[byte++];
1283
1284         EFX_BAR_WRITEO(enp, FR_CZ_RX_RSS_IPV6_REG2, &oword);
1285
1286         /* Write Toeplitz IPv6 hash key 1 */
1287         EFX_ZERO_OWORD(oword);
1288         for (offset = (FRF_CZ_RX_RSS_IPV6_TKEY_LO_LBN +
1289             FRF_CZ_RX_RSS_IPV6_TKEY_LO_WIDTH) / 8;
1290             offset > 0 && byte < n;
1291             --offset)
1292                 oword.eo_u8[offset - 1] = key[byte++];
1293
1294         EFX_BAR_WRITEO(enp, FR_CZ_RX_RSS_IPV6_REG1, &oword);
1295
1296         byte = 0;
1297
1298         /* Verify Toeplitz IPv6 hash key 3 */
1299         EFX_BAR_READO(enp, FR_CZ_RX_RSS_IPV6_REG3, &oword);
1300         for (offset = (FRF_CZ_RX_RSS_IPV6_TKEY_HI_LBN +
1301             FRF_CZ_RX_RSS_IPV6_TKEY_HI_WIDTH) / 8;
1302             offset > 0 && byte < n;
1303             --offset) {
1304                 if (oword.eo_u8[offset - 1] != key[byte++]) {
1305                         rc = EFAULT;
1306                         goto fail3;
1307                 }
1308         }
1309
1310         /* Verify Toeplitz IPv6 hash key 2 */
1311         EFX_BAR_READO(enp, FR_CZ_RX_RSS_IPV6_REG2, &oword);
1312         for (offset = (FRF_CZ_RX_RSS_IPV6_TKEY_MID_LBN +
1313             FRF_CZ_RX_RSS_IPV6_TKEY_MID_WIDTH) / 8;
1314             offset > 0 && byte < n;
1315             --offset) {
1316                 if (oword.eo_u8[offset - 1] != key[byte++]) {
1317                         rc = EFAULT;
1318                         goto fail4;
1319                 }
1320         }
1321
1322         /* Verify Toeplitz IPv6 hash key 1 */
1323         EFX_BAR_READO(enp, FR_CZ_RX_RSS_IPV6_REG1, &oword);
1324         for (offset = (FRF_CZ_RX_RSS_IPV6_TKEY_LO_LBN +
1325             FRF_CZ_RX_RSS_IPV6_TKEY_LO_WIDTH) / 8;
1326             offset > 0 && byte < n;
1327             --offset) {
1328                 if (oword.eo_u8[offset - 1] != key[byte++]) {
1329                         rc = EFAULT;
1330                         goto fail5;
1331                 }
1332         }
1333
1334 done:
1335         return (0);
1336
1337 fail5:
1338         EFSYS_PROBE(fail5);
1339 fail4:
1340         EFSYS_PROBE(fail4);
1341 fail3:
1342         EFSYS_PROBE(fail3);
1343 fail2:
1344         EFSYS_PROBE(fail2);
1345 fail1:
1346         EFSYS_PROBE1(fail1, efx_rc_t, rc);
1347
1348         return (rc);
1349 }
1350 #endif
1351
1352 #if EFSYS_OPT_RX_SCALE
1353 static  __checkReturn   efx_rc_t
1354 siena_rx_scale_tbl_set(
1355         __in            efx_nic_t *enp,
1356         __in            uint32_t rss_context,
1357         __in_ecount(n)  unsigned int *table,
1358         __in            size_t n)
1359 {
1360         efx_oword_t oword;
1361         int index;
1362         efx_rc_t rc;
1363
1364         EFX_STATIC_ASSERT(EFX_RSS_TBL_SIZE == FR_BZ_RX_INDIRECTION_TBL_ROWS);
1365         EFX_STATIC_ASSERT(EFX_MAXRSS == (1 << FRF_BZ_IT_QUEUE_WIDTH));
1366
1367         if (rss_context != EFX_RSS_CONTEXT_DEFAULT) {
1368                 rc = EINVAL;
1369                 goto fail1;
1370         }
1371
1372         if (n > FR_BZ_RX_INDIRECTION_TBL_ROWS) {
1373                 rc = EINVAL;
1374                 goto fail2;
1375         }
1376
1377         for (index = 0; index < FR_BZ_RX_INDIRECTION_TBL_ROWS; index++) {
1378                 uint32_t byte;
1379
1380                 /* Calculate the entry to place in the table */
1381                 byte = (n > 0) ? (uint32_t)table[index % n] : 0;
1382
1383                 EFSYS_PROBE2(table, int, index, uint32_t, byte);
1384
1385                 EFX_POPULATE_OWORD_1(oword, FRF_BZ_IT_QUEUE, byte);
1386
1387                 /* Write the table */
1388                 EFX_BAR_TBL_WRITEO(enp, FR_BZ_RX_INDIRECTION_TBL,
1389                                     index, &oword, B_TRUE);
1390         }
1391
1392         for (index = FR_BZ_RX_INDIRECTION_TBL_ROWS - 1; index >= 0; --index) {
1393                 uint32_t byte;
1394
1395                 /* Determine if we're starting a new batch */
1396                 byte = (n > 0) ? (uint32_t)table[index % n] : 0;
1397
1398                 /* Read the table */
1399                 EFX_BAR_TBL_READO(enp, FR_BZ_RX_INDIRECTION_TBL,
1400                                     index, &oword, B_TRUE);
1401
1402                 /* Verify the entry */
1403                 if (EFX_OWORD_FIELD(oword, FRF_BZ_IT_QUEUE) != byte) {
1404                         rc = EFAULT;
1405                         goto fail3;
1406                 }
1407         }
1408
1409         return (0);
1410
1411 fail3:
1412         EFSYS_PROBE(fail3);
1413 fail2:
1414         EFSYS_PROBE(fail2);
1415 fail1:
1416         EFSYS_PROBE1(fail1, efx_rc_t, rc);
1417
1418         return (rc);
1419 }
1420 #endif
1421
1422 /*
1423  * Falcon/Siena pseudo-header
1424  * --------------------------
1425  *
1426  * Receive packets are prefixed by an optional 16 byte pseudo-header.
1427  * The pseudo-header is a byte array of one of the forms:
1428  *
1429  *  0  1  2  3  4  5  6  7  8  9 10 11 12 13 14 15
1430  * xx.xx.xx.xx.xx.xx.xx.xx.xx.xx.xx.xx.TT.TT.TT.TT
1431  * xx.xx.xx.xx.xx.xx.xx.xx.xx.xx.xx.xx.xx.xx.LL.LL
1432  *
1433  * where:
1434  *   TT.TT.TT.TT   Toeplitz hash (32-bit big-endian)
1435  *   LL.LL         LFSR hash     (16-bit big-endian)
1436  */
1437
1438 #if EFSYS_OPT_RX_SCALE
1439 static  __checkReturn   uint32_t
1440 siena_rx_prefix_hash(
1441         __in            efx_nic_t *enp,
1442         __in            efx_rx_hash_alg_t func,
1443         __in            uint8_t *buffer)
1444 {
1445         _NOTE(ARGUNUSED(enp))
1446
1447         switch (func) {
1448         case EFX_RX_HASHALG_TOEPLITZ:
1449                 return ((buffer[12] << 24) |
1450                     (buffer[13] << 16) |
1451                     (buffer[14] <<  8) |
1452                     buffer[15]);
1453
1454         case EFX_RX_HASHALG_LFSR:
1455                 return ((buffer[14] << 8) | buffer[15]);
1456
1457         default:
1458                 EFSYS_ASSERT(0);
1459                 return (0);
1460         }
1461 }
1462 #endif /* EFSYS_OPT_RX_SCALE */
1463
1464 static  __checkReturn   efx_rc_t
1465 siena_rx_prefix_pktlen(
1466         __in            efx_nic_t *enp,
1467         __in            uint8_t *buffer,
1468         __out           uint16_t *lengthp)
1469 {
1470         _NOTE(ARGUNUSED(enp, buffer, lengthp))
1471
1472         /* Not supported by Falcon/Siena hardware */
1473         EFSYS_ASSERT(0);
1474         return (ENOTSUP);
1475 }
1476
1477
1478 static                          void
1479 siena_rx_qpost(
1480         __in                    efx_rxq_t *erp,
1481         __in_ecount(ndescs)     efsys_dma_addr_t *addrp,
1482         __in                    size_t size,
1483         __in                    unsigned int ndescs,
1484         __in                    unsigned int completed,
1485         __in                    unsigned int added)
1486 {
1487         efx_qword_t qword;
1488         unsigned int i;
1489         unsigned int offset;
1490         unsigned int id;
1491
1492         /* The client driver must not overfill the queue */
1493         EFSYS_ASSERT3U(added - completed + ndescs, <=,
1494             EFX_RXQ_LIMIT(erp->er_mask + 1));
1495
1496         id = added & (erp->er_mask);
1497         for (i = 0; i < ndescs; i++) {
1498                 EFSYS_PROBE4(rx_post, unsigned int, erp->er_index,
1499                     unsigned int, id, efsys_dma_addr_t, addrp[i],
1500                     size_t, size);
1501
1502                 EFX_POPULATE_QWORD_3(qword,
1503                     FSF_AZ_RX_KER_BUF_SIZE, (uint32_t)(size),
1504                     FSF_AZ_RX_KER_BUF_ADDR_DW0,
1505                     (uint32_t)(addrp[i] & 0xffffffff),
1506                     FSF_AZ_RX_KER_BUF_ADDR_DW1,
1507                     (uint32_t)(addrp[i] >> 32));
1508
1509                 offset = id * sizeof (efx_qword_t);
1510                 EFSYS_MEM_WRITEQ(erp->er_esmp, offset, &qword);
1511
1512                 id = (id + 1) & (erp->er_mask);
1513         }
1514 }
1515
1516 static                  void
1517 siena_rx_qpush(
1518         __in    efx_rxq_t *erp,
1519         __in    unsigned int added,
1520         __inout unsigned int *pushedp)
1521 {
1522         efx_nic_t *enp = erp->er_enp;
1523         unsigned int pushed = *pushedp;
1524         uint32_t wptr;
1525         efx_oword_t oword;
1526         efx_dword_t dword;
1527
1528         /* All descriptors are pushed */
1529         *pushedp = added;
1530
1531         /* Push the populated descriptors out */
1532         wptr = added & erp->er_mask;
1533
1534         EFX_POPULATE_OWORD_1(oword, FRF_AZ_RX_DESC_WPTR, wptr);
1535
1536         /* Only write the third DWORD */
1537         EFX_POPULATE_DWORD_1(dword,
1538             EFX_DWORD_0, EFX_OWORD_FIELD(oword, EFX_DWORD_3));
1539
1540         /* Guarantee ordering of memory (descriptors) and PIO (doorbell) */
1541         EFX_DMA_SYNC_QUEUE_FOR_DEVICE(erp->er_esmp, erp->er_mask + 1,
1542             wptr, pushed & erp->er_mask);
1543         EFSYS_PIO_WRITE_BARRIER();
1544         EFX_BAR_TBL_WRITED3(enp, FR_BZ_RX_DESC_UPD_REGP0,
1545                             erp->er_index, &dword, B_FALSE);
1546 }
1547
1548 #if EFSYS_OPT_RX_PACKED_STREAM
1549 static          void
1550 siena_rx_qpush_ps_credits(
1551         __in            efx_rxq_t *erp)
1552 {
1553         /* Not supported by Siena hardware */
1554         EFSYS_ASSERT(0);
1555 }
1556
1557 static          uint8_t *
1558 siena_rx_qps_packet_info(
1559         __in            efx_rxq_t *erp,
1560         __in            uint8_t *buffer,
1561         __in            uint32_t buffer_length,
1562         __in            uint32_t current_offset,
1563         __out           uint16_t *lengthp,
1564         __out           uint32_t *next_offsetp,
1565         __out           uint32_t *timestamp)
1566 {
1567         /* Not supported by Siena hardware */
1568         EFSYS_ASSERT(0);
1569
1570         return (NULL);
1571 }
1572 #endif /* EFSYS_OPT_RX_PACKED_STREAM */
1573
1574 static  __checkReturn   efx_rc_t
1575 siena_rx_qflush(
1576         __in    efx_rxq_t *erp)
1577 {
1578         efx_nic_t *enp = erp->er_enp;
1579         efx_oword_t oword;
1580         uint32_t label;
1581
1582         label = erp->er_index;
1583
1584         /* Flush the queue */
1585         EFX_POPULATE_OWORD_2(oword, FRF_AZ_RX_FLUSH_DESCQ_CMD, 1,
1586             FRF_AZ_RX_FLUSH_DESCQ, label);
1587         EFX_BAR_WRITEO(enp, FR_AZ_RX_FLUSH_DESCQ_REG, &oword);
1588
1589         return (0);
1590 }
1591
1592 static          void
1593 siena_rx_qenable(
1594         __in    efx_rxq_t *erp)
1595 {
1596         efx_nic_t *enp = erp->er_enp;
1597         efx_oword_t oword;
1598
1599         EFSYS_ASSERT3U(erp->er_magic, ==, EFX_RXQ_MAGIC);
1600
1601         EFX_BAR_TBL_READO(enp, FR_AZ_RX_DESC_PTR_TBL,
1602                             erp->er_index, &oword, B_TRUE);
1603
1604         EFX_SET_OWORD_FIELD(oword, FRF_AZ_RX_DC_HW_RPTR, 0);
1605         EFX_SET_OWORD_FIELD(oword, FRF_AZ_RX_DESCQ_HW_RPTR, 0);
1606         EFX_SET_OWORD_FIELD(oword, FRF_AZ_RX_DESCQ_EN, 1);
1607
1608         EFX_BAR_TBL_WRITEO(enp, FR_AZ_RX_DESC_PTR_TBL,
1609                             erp->er_index, &oword, B_TRUE);
1610 }
1611
1612 static  __checkReturn   efx_rc_t
1613 siena_rx_qcreate(
1614         __in            efx_nic_t *enp,
1615         __in            unsigned int index,
1616         __in            unsigned int label,
1617         __in            efx_rxq_type_t type,
1618         __in_opt        const efx_rxq_type_data_t *type_data,
1619         __in            efsys_mem_t *esmp,
1620         __in            size_t ndescs,
1621         __in            uint32_t id,
1622         __in            unsigned int flags,
1623         __in            efx_evq_t *eep,
1624         __in            efx_rxq_t *erp)
1625 {
1626         efx_nic_cfg_t *encp = &(enp->en_nic_cfg);
1627         efx_oword_t oword;
1628         uint32_t size;
1629         boolean_t jumbo = B_FALSE;
1630         efx_rc_t rc;
1631
1632         _NOTE(ARGUNUSED(esmp))
1633
1634         EFX_STATIC_ASSERT(EFX_EV_RX_NLABELS ==
1635             (1 << FRF_AZ_RX_DESCQ_LABEL_WIDTH));
1636         EFSYS_ASSERT3U(label, <, EFX_EV_RX_NLABELS);
1637
1638         if (index >= encp->enc_rxq_limit) {
1639                 rc = EINVAL;
1640                 goto fail1;
1641         }
1642         for (size = 0;
1643             (1U << size) <= encp->enc_rxq_max_ndescs / encp->enc_rxq_min_ndescs;
1644             size++)
1645                 if ((1U << size) == (uint32_t)ndescs / encp->enc_rxq_min_ndescs)
1646                         break;
1647         if (id + (1 << size) >= encp->enc_buftbl_limit) {
1648                 rc = EINVAL;
1649                 goto fail2;
1650         }
1651
1652         switch (type) {
1653         case EFX_RXQ_TYPE_DEFAULT:
1654                 erp->er_buf_size = type_data->ertd_default.ed_buf_size;
1655                 break;
1656
1657         default:
1658                 rc = EINVAL;
1659                 goto fail3;
1660         }
1661
1662         if (flags & EFX_RXQ_FLAG_SCATTER) {
1663 #if EFSYS_OPT_RX_SCATTER
1664                 jumbo = B_TRUE;
1665 #else
1666                 rc = EINVAL;
1667                 goto fail4;
1668 #endif  /* EFSYS_OPT_RX_SCATTER */
1669         }
1670
1671         /* Set up the new descriptor queue */
1672         EFX_POPULATE_OWORD_7(oword,
1673             FRF_AZ_RX_DESCQ_BUF_BASE_ID, id,
1674             FRF_AZ_RX_DESCQ_EVQ_ID, eep->ee_index,
1675             FRF_AZ_RX_DESCQ_OWNER_ID, 0,
1676             FRF_AZ_RX_DESCQ_LABEL, label,
1677             FRF_AZ_RX_DESCQ_SIZE, size,
1678             FRF_AZ_RX_DESCQ_TYPE, 0,
1679             FRF_AZ_RX_DESCQ_JUMBO, jumbo);
1680
1681         EFX_BAR_TBL_WRITEO(enp, FR_AZ_RX_DESC_PTR_TBL,
1682                             erp->er_index, &oword, B_TRUE);
1683
1684         return (0);
1685
1686 #if !EFSYS_OPT_RX_SCATTER
1687 fail4:
1688         EFSYS_PROBE(fail4);
1689 #endif
1690 fail3:
1691         EFSYS_PROBE(fail3);
1692 fail2:
1693         EFSYS_PROBE(fail2);
1694 fail1:
1695         EFSYS_PROBE1(fail1, efx_rc_t, rc);
1696
1697         return (rc);
1698 }
1699
1700 static          void
1701 siena_rx_qdestroy(
1702         __in    efx_rxq_t *erp)
1703 {
1704         efx_nic_t *enp = erp->er_enp;
1705         efx_oword_t oword;
1706
1707         /* Purge descriptor queue */
1708         EFX_ZERO_OWORD(oword);
1709
1710         EFX_BAR_TBL_WRITEO(enp, FR_AZ_RX_DESC_PTR_TBL,
1711                             erp->er_index, &oword, B_TRUE);
1712 }
1713
1714 static          void
1715 siena_rx_fini(
1716         __in    efx_nic_t *enp)
1717 {
1718         _NOTE(ARGUNUSED(enp))
1719 }
1720
1721 #endif /* EFSYS_OPT_SIENA */