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_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 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         __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_ASSERT(ISP2(encp->enc_rxq_max_ndescs));
 823         EFSYS_ASSERT(ISP2(encp->enc_rxq_min_ndescs));
 824
 825         if (!ISP2(ndescs) ||
 826             ndescs < encp->enc_rxq_min_ndescs ||
 827             ndescs > encp->enc_rxq_max_ndescs) {
 828                 rc = EINVAL;
 829                 goto fail1;
 830         }
 831
 832         /* Allocate an RXQ object */
 833         EFSYS_KMEM_ALLOC(enp->en_esip, sizeof (efx_rxq_t), erp);
 834
 835         if (erp == NULL) {
 836                 rc = ENOMEM;
 837                 goto fail2;
 838         }
 839
 840         erp->er_magic = EFX_RXQ_MAGIC;
 841         erp->er_enp = enp;
 842         erp->er_index = index;
 843         erp->er_mask = ndescs - 1;
 844         erp->er_esmp = esmp;
 845
 846         if ((rc = erxop->erxo_qcreate(enp, index, label, type, type_data, esmp,
 847             ndescs, id, flags, eep, erp)) != 0)
 848                 goto fail3;
 849
 850         enp->en_rx_qcount++;
 851         *erpp = erp;
 852
 853         return (0);
 854
 855 fail3:
 856         EFSYS_PROBE(fail3);
 857
 858         EFSYS_KMEM_FREE(enp->en_esip, sizeof (efx_rxq_t), erp);
 859 fail2:
 860         EFSYS_PROBE(fail2);
 861 fail1:
 862         EFSYS_PROBE1(fail1, efx_rc_t, rc);
 863
 864         return (rc);
 865 }
 866
 867         __checkReturn   efx_rc_t
 868 efx_rx_qcreate(
 869         __in            efx_nic_t *enp,
 870         __in            unsigned int index,
 871         __in            unsigned int label,
 872         __in            efx_rxq_type_t type,
 873         __in            size_t buf_size,
 874         __in            efsys_mem_t *esmp,
 875         __in            size_t ndescs,
 876         __in            uint32_t id,
 877         __in            unsigned int flags,
 878         __in            efx_evq_t *eep,
 879         __deref_out     efx_rxq_t **erpp)
 880 {
 881         efx_rxq_type_data_t type_data;
 882
 883         memset(&type_data, 0, sizeof (type_data));
 884
 885         type_data.ertd_default.ed_buf_size = buf_size;
 886
 887         return efx_rx_qcreate_internal(enp, index, label, type, &type_data,
 888             esmp, ndescs, id, flags, eep, erpp);
 889 }
 890
 891 #if EFSYS_OPT_RX_PACKED_STREAM
 892
 893         __checkReturn   efx_rc_t
 894 efx_rx_qcreate_packed_stream(
 895         __in            efx_nic_t *enp,
 896         __in            unsigned int index,
 897         __in            unsigned int label,
 898         __in            uint32_t ps_buf_size,
 899         __in            efsys_mem_t *esmp,
 900         __in            size_t ndescs,
 901         __in            efx_evq_t *eep,
 902         __deref_out     efx_rxq_t **erpp)
 903 {
 904         efx_rxq_type_data_t type_data;
 905
 906         memset(&type_data, 0, sizeof (type_data));
 907
 908         type_data.ertd_packed_stream.eps_buf_size = ps_buf_size;
 909
 910         return efx_rx_qcreate_internal(enp, index, label,
 911             EFX_RXQ_TYPE_PACKED_STREAM, &type_data, esmp, ndescs,
 912             0 /* id unused on EF10 */, EFX_RXQ_FLAG_NONE, eep, erpp);
 913 }
 914
 915 #endif
 916
 917 #if EFSYS_OPT_RX_ES_SUPER_BUFFER
 918
 919         __checkReturn   efx_rc_t
 920 efx_rx_qcreate_es_super_buffer(
 921         __in            efx_nic_t *enp,
 922         __in            unsigned int index,
 923         __in            unsigned int label,
 924         __in            uint32_t n_bufs_per_desc,
 925         __in            uint32_t max_dma_len,
 926         __in            uint32_t buf_stride,
 927         __in            uint32_t hol_block_timeout,
 928         __in            efsys_mem_t *esmp,
 929         __in            size_t ndescs,
 930         __in            unsigned int flags,
 931         __in            efx_evq_t *eep,
 932         __deref_out     efx_rxq_t **erpp)
 933 {
 934         efx_rc_t rc;
 935         efx_rxq_type_data_t type_data;
 936
 937         if (hol_block_timeout > EFX_RXQ_ES_SUPER_BUFFER_HOL_BLOCK_MAX) {
 938                 rc = EINVAL;
 939                 goto fail1;
 940         }
 941
 942         memset(&type_data, 0, sizeof (type_data));
 943
 944         type_data.ertd_es_super_buffer.eessb_bufs_per_desc = n_bufs_per_desc;
 945         type_data.ertd_es_super_buffer.eessb_max_dma_len = max_dma_len;
 946         type_data.ertd_es_super_buffer.eessb_buf_stride = buf_stride;
 947         type_data.ertd_es_super_buffer.eessb_hol_block_timeout =
 948             hol_block_timeout;
 949
 950         rc = efx_rx_qcreate_internal(enp, index, label,
 951             EFX_RXQ_TYPE_ES_SUPER_BUFFER, &type_data, esmp, ndescs,
 952             0 /* id unused on EF10 */, flags, eep, erpp);
 953         if (rc != 0)
 954                 goto fail2;
 955
 956         return (0);
 957
 958 fail2:
 959         EFSYS_PROBE(fail2);
 960 fail1:
 961         EFSYS_PROBE1(fail1, efx_rc_t, rc);
 962
 963         return (rc);
 964 }
 965
 966 #endif
 967
 968
 969                         void
 970 efx_rx_qdestroy(
 971         __in            efx_rxq_t *erp)
 972 {
 973         efx_nic_t *enp = erp->er_enp;
 974         const efx_rx_ops_t *erxop = enp->en_erxop;
 975
 976         EFSYS_ASSERT3U(erp->er_magic, ==, EFX_RXQ_MAGIC);
 977
 978         erxop->erxo_qdestroy(erp);
 979 }
 980
 981         __checkReturn   efx_rc_t
 982 efx_pseudo_hdr_pkt_length_get(
 983         __in            efx_rxq_t *erp,
 984         __in            uint8_t *buffer,
 985         __out           uint16_t *lengthp)
 986 {
 987         efx_nic_t *enp = erp->er_enp;
 988         const efx_rx_ops_t *erxop = enp->en_erxop;
 989
 990         EFSYS_ASSERT3U(erp->er_magic, ==, EFX_RXQ_MAGIC);
 991
 992         return (erxop->erxo_prefix_pktlen(enp, buffer, lengthp));
 993 }
 994
 995 #if EFSYS_OPT_RX_SCALE
 996         __checkReturn   uint32_t
 997 efx_pseudo_hdr_hash_get(
 998         __in            efx_rxq_t *erp,
 999         __in            efx_rx_hash_alg_t func,
1000         __in            uint8_t *buffer)
1001 {
1002         efx_nic_t *enp = erp->er_enp;
1003         const efx_rx_ops_t *erxop = enp->en_erxop;
1004
1005         EFSYS_ASSERT3U(erp->er_magic, ==, EFX_RXQ_MAGIC);
1006
1007         EFSYS_ASSERT3U(enp->en_hash_support, ==, EFX_RX_HASH_AVAILABLE);
1008         return (erxop->erxo_prefix_hash(enp, func, buffer));
1009 }
1010 #endif  /* EFSYS_OPT_RX_SCALE */
1011
1012 #if EFSYS_OPT_SIENA
1013
1014 static  __checkReturn   efx_rc_t
1015 siena_rx_init(
1016         __in            efx_nic_t *enp)
1017 {
1018         efx_oword_t oword;
1019         unsigned int index;
1020
1021         EFX_BAR_READO(enp, FR_AZ_RX_CFG_REG, &oword);
1022
1023         EFX_SET_OWORD_FIELD(oword, FRF_BZ_RX_DESC_PUSH_EN, 0);
1024         EFX_SET_OWORD_FIELD(oword, FRF_BZ_RX_HASH_ALG, 0);
1025         EFX_SET_OWORD_FIELD(oword, FRF_BZ_RX_IP_HASH, 0);
1026         EFX_SET_OWORD_FIELD(oword, FRF_BZ_RX_TCP_SUP, 0);
1027         EFX_SET_OWORD_FIELD(oword, FRF_BZ_RX_HASH_INSRT_HDR, 0);
1028         EFX_SET_OWORD_FIELD(oword, FRF_BZ_RX_USR_BUF_SIZE, 0x3000 / 32);
1029         EFX_BAR_WRITEO(enp, FR_AZ_RX_CFG_REG, &oword);
1030
1031         /* Zero the RSS table */
1032         for (index = 0; index < FR_BZ_RX_INDIRECTION_TBL_ROWS;
1033             index++) {
1034                 EFX_ZERO_OWORD(oword);
1035                 EFX_BAR_TBL_WRITEO(enp, FR_BZ_RX_INDIRECTION_TBL,
1036                                     index, &oword, B_TRUE);
1037         }
1038
1039 #if EFSYS_OPT_RX_SCALE
1040         /* The RSS key and indirection table are writable. */
1041         enp->en_rss_context_type = EFX_RX_SCALE_EXCLUSIVE;
1042
1043         /* Hardware can insert RX hash with/without RSS */
1044         enp->en_hash_support = EFX_RX_HASH_AVAILABLE;
1045 #endif  /* EFSYS_OPT_RX_SCALE */
1046
1047         return (0);
1048 }
1049
1050 #if EFSYS_OPT_RX_SCATTER
1051 static  __checkReturn   efx_rc_t
1052 siena_rx_scatter_enable(
1053         __in            efx_nic_t *enp,
1054         __in            unsigned int buf_size)
1055 {
1056         unsigned int nbuf32;
1057         efx_oword_t oword;
1058         efx_rc_t rc;
1059
1060         nbuf32 = buf_size / 32;
1061         if ((nbuf32 == 0) ||
1062             (nbuf32 >= (1 << FRF_BZ_RX_USR_BUF_SIZE_WIDTH)) ||
1063             ((buf_size % 32) != 0)) {
1064                 rc = EINVAL;
1065                 goto fail1;
1066         }
1067
1068         if (enp->en_rx_qcount > 0) {
1069                 rc = EBUSY;
1070                 goto fail2;
1071         }
1072
1073         /* Set scatter buffer size */
1074         EFX_BAR_READO(enp, FR_AZ_RX_CFG_REG, &oword);
1075         EFX_SET_OWORD_FIELD(oword, FRF_BZ_RX_USR_BUF_SIZE, nbuf32);
1076         EFX_BAR_WRITEO(enp, FR_AZ_RX_CFG_REG, &oword);
1077
1078         /* Enable scatter for packets not matching a filter */
1079         EFX_BAR_READO(enp, FR_AZ_RX_FILTER_CTL_REG, &oword);
1080         EFX_SET_OWORD_FIELD(oword, FRF_BZ_SCATTER_ENBL_NO_MATCH_Q, 1);
1081         EFX_BAR_WRITEO(enp, FR_AZ_RX_FILTER_CTL_REG, &oword);
1082
1083         return (0);
1084
1085 fail2:
1086         EFSYS_PROBE(fail2);
1087 fail1:
1088         EFSYS_PROBE1(fail1, efx_rc_t, rc);
1089
1090         return (rc);
1091 }
1092 #endif  /* EFSYS_OPT_RX_SCATTER */
1093
1094
1095 #define EFX_RX_LFSR_HASH(_enp, _insert)                                 \
1096         do {                                                            \
1097                 efx_oword_t oword;                                      \
1098                                                                         \
1099                 EFX_BAR_READO((_enp), FR_AZ_RX_CFG_REG, &oword);        \
1100                 EFX_SET_OWORD_FIELD(oword, FRF_BZ_RX_HASH_ALG, 0);      \
1101                 EFX_SET_OWORD_FIELD(oword, FRF_BZ_RX_IP_HASH, 0);       \
1102                 EFX_SET_OWORD_FIELD(oword, FRF_BZ_RX_TCP_SUP, 0);       \
1103                 EFX_SET_OWORD_FIELD(oword, FRF_BZ_RX_HASH_INSRT_HDR,    \
1104                     (_insert) ? 1 : 0);                                 \
1105                 EFX_BAR_WRITEO((_enp), FR_AZ_RX_CFG_REG, &oword);       \
1106                                                                         \
1107                 if ((_enp)->en_family == EFX_FAMILY_SIENA) {            \
1108                         EFX_BAR_READO((_enp), FR_CZ_RX_RSS_IPV6_REG3,   \
1109                             &oword);                                    \
1110                         EFX_SET_OWORD_FIELD(oword,                      \
1111                             FRF_CZ_RX_RSS_IPV6_THASH_ENABLE, 0);        \
1112                         EFX_BAR_WRITEO((_enp), FR_CZ_RX_RSS_IPV6_REG3,  \
1113                             &oword);                                    \
1114                 }                                                       \
1115                                                                         \
1116                 _NOTE(CONSTANTCONDITION)                                \
1117         } while (B_FALSE)
1118
1119 #define EFX_RX_TOEPLITZ_IPV4_HASH(_enp, _insert, _ip, _tcp)             \
1120         do {                                                            \
1121                 efx_oword_t oword;                                      \
1122                                                                         \
1123                 EFX_BAR_READO((_enp), FR_AZ_RX_CFG_REG, &oword);        \
1124                 EFX_SET_OWORD_FIELD(oword, FRF_BZ_RX_HASH_ALG, 1);      \
1125                 EFX_SET_OWORD_FIELD(oword, FRF_BZ_RX_IP_HASH,           \
1126                     (_ip) ? 1 : 0);                                     \
1127                 EFX_SET_OWORD_FIELD(oword, FRF_BZ_RX_TCP_SUP,           \
1128                     (_tcp) ? 0 : 1);                                    \
1129                 EFX_SET_OWORD_FIELD(oword, FRF_BZ_RX_HASH_INSRT_HDR,    \
1130                     (_insert) ? 1 : 0);                                 \
1131                 EFX_BAR_WRITEO((_enp), FR_AZ_RX_CFG_REG, &oword);       \
1132                                                                         \
1133                 _NOTE(CONSTANTCONDITION)                                \
1134         } while (B_FALSE)
1135
1136 #define EFX_RX_TOEPLITZ_IPV6_HASH(_enp, _ip, _tcp, _rc)                 \
1137         do {                                                            \
1138                 efx_oword_t oword;                                      \
1139                                                                         \
1140                 EFX_BAR_READO((_enp), FR_CZ_RX_RSS_IPV6_REG3, &oword);  \
1141                 EFX_SET_OWORD_FIELD(oword,                              \
1142                     FRF_CZ_RX_RSS_IPV6_THASH_ENABLE, 1);                \
1143                 EFX_SET_OWORD_FIELD(oword,                              \
1144                     FRF_CZ_RX_RSS_IPV6_IP_THASH_ENABLE, (_ip) ? 1 : 0); \
1145                 EFX_SET_OWORD_FIELD(oword,                              \
1146                     FRF_CZ_RX_RSS_IPV6_TCP_SUPPRESS, (_tcp) ? 0 : 1);   \
1147                 EFX_BAR_WRITEO((_enp), FR_CZ_RX_RSS_IPV6_REG3, &oword); \
1148                                                                         \
1149                 (_rc) = 0;                                              \
1150                                                                         \
1151                 _NOTE(CONSTANTCONDITION)                                \
1152         } while (B_FALSE)
1153
1154
1155 #if EFSYS_OPT_RX_SCALE
1156
1157 static  __checkReturn   efx_rc_t
1158 siena_rx_scale_mode_set(
1159         __in            efx_nic_t *enp,
1160         __in            uint32_t rss_context,
1161         __in            efx_rx_hash_alg_t alg,
1162         __in            efx_rx_hash_type_t type,
1163         __in            boolean_t insert)
1164 {
1165         efx_rc_t rc;
1166
1167         if (rss_context != EFX_RSS_CONTEXT_DEFAULT) {
1168                 rc = EINVAL;
1169                 goto fail1;
1170         }
1171
1172         switch (alg) {
1173         case EFX_RX_HASHALG_LFSR:
1174                 EFX_RX_LFSR_HASH(enp, insert);
1175                 break;
1176
1177         case EFX_RX_HASHALG_TOEPLITZ:
1178                 EFX_RX_TOEPLITZ_IPV4_HASH(enp, insert,
1179                     (type & EFX_RX_HASH_IPV4) ? B_TRUE : B_FALSE,
1180                     (type & EFX_RX_HASH_TCPIPV4) ? B_TRUE : B_FALSE);
1181
1182                 EFX_RX_TOEPLITZ_IPV6_HASH(enp,
1183                     (type & EFX_RX_HASH_IPV6) ? B_TRUE : B_FALSE,
1184                     (type & EFX_RX_HASH_TCPIPV6) ? B_TRUE : B_FALSE,
1185                     rc);
1186                 if (rc != 0)
1187                         goto fail2;
1188
1189                 break;
1190
1191         default:
1192                 rc = EINVAL;
1193                 goto fail3;
1194         }
1195
1196         return (0);
1197
1198 fail3:
1199         EFSYS_PROBE(fail3);
1200 fail2:
1201         EFSYS_PROBE(fail2);
1202 fail1:
1203         EFSYS_PROBE1(fail1, efx_rc_t, rc);
1204
1205         EFX_RX_LFSR_HASH(enp, B_FALSE);
1206
1207         return (rc);
1208 }
1209 #endif
1210
1211 #if EFSYS_OPT_RX_SCALE
1212 static  __checkReturn   efx_rc_t
1213 siena_rx_scale_key_set(
1214         __in            efx_nic_t *enp,
1215         __in            uint32_t rss_context,
1216         __in_ecount(n)  uint8_t *key,
1217         __in            size_t n)
1218 {
1219         efx_oword_t oword;
1220         unsigned int byte;
1221         unsigned int offset;
1222         efx_rc_t rc;
1223
1224         if (rss_context != EFX_RSS_CONTEXT_DEFAULT) {
1225                 rc = EINVAL;
1226                 goto fail1;
1227         }
1228
1229         byte = 0;
1230
1231         /* Write Toeplitz IPv4 hash key */
1232         EFX_ZERO_OWORD(oword);
1233         for (offset = (FRF_BZ_RX_RSS_TKEY_LBN + FRF_BZ_RX_RSS_TKEY_WIDTH) / 8;
1234             offset > 0 && byte < n;
1235             --offset)
1236                 oword.eo_u8[offset - 1] = key[byte++];
1237
1238         EFX_BAR_WRITEO(enp, FR_BZ_RX_RSS_TKEY_REG, &oword);
1239
1240         byte = 0;
1241
1242         /* Verify Toeplitz IPv4 hash key */
1243         EFX_BAR_READO(enp, FR_BZ_RX_RSS_TKEY_REG, &oword);
1244         for (offset = (FRF_BZ_RX_RSS_TKEY_LBN + FRF_BZ_RX_RSS_TKEY_WIDTH) / 8;
1245             offset > 0 && byte < n;
1246             --offset) {
1247                 if (oword.eo_u8[offset - 1] != key[byte++]) {
1248                         rc = EFAULT;
1249                         goto fail2;
1250                 }
1251         }
1252
1253         if ((enp->en_features & EFX_FEATURE_IPV6) == 0)
1254                 goto done;
1255
1256         byte = 0;
1257
1258         /* Write Toeplitz IPv6 hash key 3 */
1259         EFX_BAR_READO(enp, FR_CZ_RX_RSS_IPV6_REG3, &oword);
1260         for (offset = (FRF_CZ_RX_RSS_IPV6_TKEY_HI_LBN +
1261             FRF_CZ_RX_RSS_IPV6_TKEY_HI_WIDTH) / 8;
1262             offset > 0 && byte < n;
1263             --offset)
1264                 oword.eo_u8[offset - 1] = key[byte++];
1265
1266         EFX_BAR_WRITEO(enp, FR_CZ_RX_RSS_IPV6_REG3, &oword);
1267
1268         /* Write Toeplitz IPv6 hash key 2 */
1269         EFX_ZERO_OWORD(oword);
1270         for (offset = (FRF_CZ_RX_RSS_IPV6_TKEY_MID_LBN +
1271             FRF_CZ_RX_RSS_IPV6_TKEY_MID_WIDTH) / 8;
1272             offset > 0 && byte < n;
1273             --offset)
1274                 oword.eo_u8[offset - 1] = key[byte++];
1275
1276         EFX_BAR_WRITEO(enp, FR_CZ_RX_RSS_IPV6_REG2, &oword);
1277
1278         /* Write Toeplitz IPv6 hash key 1 */
1279         EFX_ZERO_OWORD(oword);
1280         for (offset = (FRF_CZ_RX_RSS_IPV6_TKEY_LO_LBN +
1281             FRF_CZ_RX_RSS_IPV6_TKEY_LO_WIDTH) / 8;
1282             offset > 0 && byte < n;
1283             --offset)
1284                 oword.eo_u8[offset - 1] = key[byte++];
1285
1286         EFX_BAR_WRITEO(enp, FR_CZ_RX_RSS_IPV6_REG1, &oword);
1287
1288         byte = 0;
1289
1290         /* Verify Toeplitz IPv6 hash key 3 */
1291         EFX_BAR_READO(enp, FR_CZ_RX_RSS_IPV6_REG3, &oword);
1292         for (offset = (FRF_CZ_RX_RSS_IPV6_TKEY_HI_LBN +
1293             FRF_CZ_RX_RSS_IPV6_TKEY_HI_WIDTH) / 8;
1294             offset > 0 && byte < n;
1295             --offset) {
1296                 if (oword.eo_u8[offset - 1] != key[byte++]) {
1297                         rc = EFAULT;
1298                         goto fail3;
1299                 }
1300         }
1301
1302         /* Verify Toeplitz IPv6 hash key 2 */
1303         EFX_BAR_READO(enp, FR_CZ_RX_RSS_IPV6_REG2, &oword);
1304         for (offset = (FRF_CZ_RX_RSS_IPV6_TKEY_MID_LBN +
1305             FRF_CZ_RX_RSS_IPV6_TKEY_MID_WIDTH) / 8;
1306             offset > 0 && byte < n;
1307             --offset) {
1308                 if (oword.eo_u8[offset - 1] != key[byte++]) {
1309                         rc = EFAULT;
1310                         goto fail4;
1311                 }
1312         }
1313
1314         /* Verify Toeplitz IPv6 hash key 1 */
1315         EFX_BAR_READO(enp, FR_CZ_RX_RSS_IPV6_REG1, &oword);
1316         for (offset = (FRF_CZ_RX_RSS_IPV6_TKEY_LO_LBN +
1317             FRF_CZ_RX_RSS_IPV6_TKEY_LO_WIDTH) / 8;
1318             offset > 0 && byte < n;
1319             --offset) {
1320                 if (oword.eo_u8[offset - 1] != key[byte++]) {
1321                         rc = EFAULT;
1322                         goto fail5;
1323                 }
1324         }
1325
1326 done:
1327         return (0);
1328
1329 fail5:
1330         EFSYS_PROBE(fail5);
1331 fail4:
1332         EFSYS_PROBE(fail4);
1333 fail3:
1334         EFSYS_PROBE(fail3);
1335 fail2:
1336         EFSYS_PROBE(fail2);
1337 fail1:
1338         EFSYS_PROBE1(fail1, efx_rc_t, rc);
1339
1340         return (rc);
1341 }
1342 #endif
1343
1344 #if EFSYS_OPT_RX_SCALE
1345 static  __checkReturn   efx_rc_t
1346 siena_rx_scale_tbl_set(
1347         __in            efx_nic_t *enp,
1348         __in            uint32_t rss_context,
1349         __in_ecount(n)  unsigned int *table,
1350         __in            size_t n)
1351 {
1352         efx_oword_t oword;
1353         int index;
1354         efx_rc_t rc;
1355
1356         EFX_STATIC_ASSERT(EFX_RSS_TBL_SIZE == FR_BZ_RX_INDIRECTION_TBL_ROWS);
1357         EFX_STATIC_ASSERT(EFX_MAXRSS == (1 << FRF_BZ_IT_QUEUE_WIDTH));
1358
1359         if (rss_context != EFX_RSS_CONTEXT_DEFAULT) {
1360                 rc = EINVAL;
1361                 goto fail1;
1362         }
1363
1364         if (n > FR_BZ_RX_INDIRECTION_TBL_ROWS) {
1365                 rc = EINVAL;
1366                 goto fail2;
1367         }
1368
1369         for (index = 0; index < FR_BZ_RX_INDIRECTION_TBL_ROWS; index++) {
1370                 uint32_t byte;
1371
1372                 /* Calculate the entry to place in the table */
1373                 byte = (n > 0) ? (uint32_t)table[index % n] : 0;
1374
1375                 EFSYS_PROBE2(table, int, index, uint32_t, byte);
1376
1377                 EFX_POPULATE_OWORD_1(oword, FRF_BZ_IT_QUEUE, byte);
1378
1379                 /* Write the table */
1380                 EFX_BAR_TBL_WRITEO(enp, FR_BZ_RX_INDIRECTION_TBL,
1381                                     index, &oword, B_TRUE);
1382         }
1383
1384         for (index = FR_BZ_RX_INDIRECTION_TBL_ROWS - 1; index >= 0; --index) {
1385                 uint32_t byte;
1386
1387                 /* Determine if we're starting a new batch */
1388                 byte = (n > 0) ? (uint32_t)table[index % n] : 0;
1389
1390                 /* Read the table */
1391                 EFX_BAR_TBL_READO(enp, FR_BZ_RX_INDIRECTION_TBL,
1392                                     index, &oword, B_TRUE);
1393
1394                 /* Verify the entry */
1395                 if (EFX_OWORD_FIELD(oword, FRF_BZ_IT_QUEUE) != byte) {
1396                         rc = EFAULT;
1397                         goto fail3;
1398                 }
1399         }
1400
1401         return (0);
1402
1403 fail3:
1404         EFSYS_PROBE(fail3);
1405 fail2:
1406         EFSYS_PROBE(fail2);
1407 fail1:
1408         EFSYS_PROBE1(fail1, efx_rc_t, rc);
1409
1410         return (rc);
1411 }
1412 #endif
1413
1414 /*
1415  * Falcon/Siena pseudo-header
1416  * --------------------------
1417  *
1418  * Receive packets are prefixed by an optional 16 byte pseudo-header.
1419  * The pseudo-header is a byte array of one of the forms:
1420  *
1421  *  0  1  2  3  4  5  6  7  8  9 10 11 12 13 14 15
1422  * xx.xx.xx.xx.xx.xx.xx.xx.xx.xx.xx.xx.TT.TT.TT.TT
1423  * xx.xx.xx.xx.xx.xx.xx.xx.xx.xx.xx.xx.xx.xx.LL.LL
1424  *
1425  * where:
1426  *   TT.TT.TT.TT   Toeplitz hash (32-bit big-endian)
1427  *   LL.LL         LFSR hash     (16-bit big-endian)
1428  */
1429
1430 #if EFSYS_OPT_RX_SCALE
1431 static  __checkReturn   uint32_t
1432 siena_rx_prefix_hash(
1433         __in            efx_nic_t *enp,
1434         __in            efx_rx_hash_alg_t func,
1435         __in            uint8_t *buffer)
1436 {
1437         _NOTE(ARGUNUSED(enp))
1438
1439         switch (func) {
1440         case EFX_RX_HASHALG_TOEPLITZ:
1441                 return ((buffer[12] << 24) |
1442                     (buffer[13] << 16) |
1443                     (buffer[14] <<  8) |
1444                     buffer[15]);
1445
1446         case EFX_RX_HASHALG_LFSR:
1447                 return ((buffer[14] << 8) | buffer[15]);
1448
1449         default:
1450                 EFSYS_ASSERT(0);
1451                 return (0);
1452         }
1453 }
1454 #endif /* EFSYS_OPT_RX_SCALE */
1455
1456 static  __checkReturn   efx_rc_t
1457 siena_rx_prefix_pktlen(
1458         __in            efx_nic_t *enp,
1459         __in            uint8_t *buffer,
1460         __out           uint16_t *lengthp)
1461 {
1462         _NOTE(ARGUNUSED(enp, buffer, lengthp))
1463
1464         /* Not supported by Falcon/Siena hardware */
1465         EFSYS_ASSERT(0);
1466         return (ENOTSUP);
1467 }
1468
1469
1470 static                          void
1471 siena_rx_qpost(
1472         __in                    efx_rxq_t *erp,
1473         __in_ecount(ndescs)     efsys_dma_addr_t *addrp,
1474         __in                    size_t size,
1475         __in                    unsigned int ndescs,
1476         __in                    unsigned int completed,
1477         __in                    unsigned int added)
1478 {
1479         efx_qword_t qword;
1480         unsigned int i;
1481         unsigned int offset;
1482         unsigned int id;
1483
1484         /* The client driver must not overfill the queue */
1485         EFSYS_ASSERT3U(added - completed + ndescs, <=,
1486             EFX_RXQ_LIMIT(erp->er_mask + 1));
1487
1488         id = added & (erp->er_mask);
1489         for (i = 0; i < ndescs; i++) {
1490                 EFSYS_PROBE4(rx_post, unsigned int, erp->er_index,
1491                     unsigned int, id, efsys_dma_addr_t, addrp[i],
1492                     size_t, size);
1493
1494                 EFX_POPULATE_QWORD_3(qword,
1495                     FSF_AZ_RX_KER_BUF_SIZE, (uint32_t)(size),
1496                     FSF_AZ_RX_KER_BUF_ADDR_DW0,
1497                     (uint32_t)(addrp[i] & 0xffffffff),
1498                     FSF_AZ_RX_KER_BUF_ADDR_DW1,
1499                     (uint32_t)(addrp[i] >> 32));
1500
1501                 offset = id * sizeof (efx_qword_t);
1502                 EFSYS_MEM_WRITEQ(erp->er_esmp, offset, &qword);
1503
1504                 id = (id + 1) & (erp->er_mask);
1505         }
1506 }
1507
1508 static                  void
1509 siena_rx_qpush(
1510         __in    efx_rxq_t *erp,
1511         __in    unsigned int added,
1512         __inout unsigned int *pushedp)
1513 {
1514         efx_nic_t *enp = erp->er_enp;
1515         unsigned int pushed = *pushedp;
1516         uint32_t wptr;
1517         efx_oword_t oword;
1518         efx_dword_t dword;
1519
1520         /* All descriptors are pushed */
1521         *pushedp = added;
1522
1523         /* Push the populated descriptors out */
1524         wptr = added & erp->er_mask;
1525
1526         EFX_POPULATE_OWORD_1(oword, FRF_AZ_RX_DESC_WPTR, wptr);
1527
1528         /* Only write the third DWORD */
1529         EFX_POPULATE_DWORD_1(dword,
1530             EFX_DWORD_0, EFX_OWORD_FIELD(oword, EFX_DWORD_3));
1531
1532         /* Guarantee ordering of memory (descriptors) and PIO (doorbell) */
1533         EFX_DMA_SYNC_QUEUE_FOR_DEVICE(erp->er_esmp, erp->er_mask + 1,
1534             wptr, pushed & erp->er_mask);
1535         EFSYS_PIO_WRITE_BARRIER();
1536         EFX_BAR_TBL_WRITED3(enp, FR_BZ_RX_DESC_UPD_REGP0,
1537                             erp->er_index, &dword, B_FALSE);
1538 }
1539
1540 #if EFSYS_OPT_RX_PACKED_STREAM
1541 static          void
1542 siena_rx_qpush_ps_credits(
1543         __in            efx_rxq_t *erp)
1544 {
1545         /* Not supported by Siena hardware */
1546         EFSYS_ASSERT(0);
1547 }
1548
1549 static          uint8_t *
1550 siena_rx_qps_packet_info(
1551         __in            efx_rxq_t *erp,
1552         __in            uint8_t *buffer,
1553         __in            uint32_t buffer_length,
1554         __in            uint32_t current_offset,
1555         __out           uint16_t *lengthp,
1556         __out           uint32_t *next_offsetp,
1557         __out           uint32_t *timestamp)
1558 {
1559         /* Not supported by Siena hardware */
1560         EFSYS_ASSERT(0);
1561
1562         return (NULL);
1563 }
1564 #endif /* EFSYS_OPT_RX_PACKED_STREAM */
1565
1566 static  __checkReturn   efx_rc_t
1567 siena_rx_qflush(
1568         __in    efx_rxq_t *erp)
1569 {
1570         efx_nic_t *enp = erp->er_enp;
1571         efx_oword_t oword;
1572         uint32_t label;
1573
1574         label = erp->er_index;
1575
1576         /* Flush the queue */
1577         EFX_POPULATE_OWORD_2(oword, FRF_AZ_RX_FLUSH_DESCQ_CMD, 1,
1578             FRF_AZ_RX_FLUSH_DESCQ, label);
1579         EFX_BAR_WRITEO(enp, FR_AZ_RX_FLUSH_DESCQ_REG, &oword);
1580
1581         return (0);
1582 }
1583
1584 static          void
1585 siena_rx_qenable(
1586         __in    efx_rxq_t *erp)
1587 {
1588         efx_nic_t *enp = erp->er_enp;
1589         efx_oword_t oword;
1590
1591         EFSYS_ASSERT3U(erp->er_magic, ==, EFX_RXQ_MAGIC);
1592
1593         EFX_BAR_TBL_READO(enp, FR_AZ_RX_DESC_PTR_TBL,
1594                             erp->er_index, &oword, B_TRUE);
1595
1596         EFX_SET_OWORD_FIELD(oword, FRF_AZ_RX_DC_HW_RPTR, 0);
1597         EFX_SET_OWORD_FIELD(oword, FRF_AZ_RX_DESCQ_HW_RPTR, 0);
1598         EFX_SET_OWORD_FIELD(oword, FRF_AZ_RX_DESCQ_EN, 1);
1599
1600         EFX_BAR_TBL_WRITEO(enp, FR_AZ_RX_DESC_PTR_TBL,
1601                             erp->er_index, &oword, B_TRUE);
1602 }
1603
1604 static  __checkReturn   efx_rc_t
1605 siena_rx_qcreate(
1606         __in            efx_nic_t *enp,
1607         __in            unsigned int index,
1608         __in            unsigned int label,
1609         __in            efx_rxq_type_t type,
1610         __in_opt        const efx_rxq_type_data_t *type_data,
1611         __in            efsys_mem_t *esmp,
1612         __in            size_t ndescs,
1613         __in            uint32_t id,
1614         __in            unsigned int flags,
1615         __in            efx_evq_t *eep,
1616         __in            efx_rxq_t *erp)
1617 {
1618         efx_nic_cfg_t *encp = &(enp->en_nic_cfg);
1619         efx_oword_t oword;
1620         uint32_t size;
1621         boolean_t jumbo = B_FALSE;
1622         efx_rc_t rc;
1623
1624         _NOTE(ARGUNUSED(esmp))
1625
1626         EFX_STATIC_ASSERT(EFX_EV_RX_NLABELS ==
1627             (1 << FRF_AZ_RX_DESCQ_LABEL_WIDTH));
1628         EFSYS_ASSERT3U(label, <, EFX_EV_RX_NLABELS);
1629         EFSYS_ASSERT3U(enp->en_rx_qcount + 1, <, encp->enc_rxq_limit);
1630
1631         if (index >= encp->enc_rxq_limit) {
1632                 rc = EINVAL;
1633                 goto fail1;
1634         }
1635         for (size = 0;
1636             (1U << size) <= encp->enc_rxq_max_ndescs / encp->enc_rxq_min_ndescs;
1637             size++)
1638                 if ((1U << size) == (uint32_t)ndescs / encp->enc_rxq_min_ndescs)
1639                         break;
1640         if (id + (1 << size) >= encp->enc_buftbl_limit) {
1641                 rc = EINVAL;
1642                 goto fail2;
1643         }
1644
1645         switch (type) {
1646         case EFX_RXQ_TYPE_DEFAULT:
1647                 erp->er_buf_size = type_data->ertd_default.ed_buf_size;
1648                 break;
1649
1650         default:
1651                 rc = EINVAL;
1652                 goto fail3;
1653         }
1654
1655         if (flags & EFX_RXQ_FLAG_SCATTER) {
1656 #if EFSYS_OPT_RX_SCATTER
1657                 jumbo = B_TRUE;
1658 #else
1659                 rc = EINVAL;
1660                 goto fail4;
1661 #endif  /* EFSYS_OPT_RX_SCATTER */
1662         }
1663
1664         /* Set up the new descriptor queue */
1665         EFX_POPULATE_OWORD_7(oword,
1666             FRF_AZ_RX_DESCQ_BUF_BASE_ID, id,
1667             FRF_AZ_RX_DESCQ_EVQ_ID, eep->ee_index,
1668             FRF_AZ_RX_DESCQ_OWNER_ID, 0,
1669             FRF_AZ_RX_DESCQ_LABEL, label,
1670             FRF_AZ_RX_DESCQ_SIZE, size,
1671             FRF_AZ_RX_DESCQ_TYPE, 0,
1672             FRF_AZ_RX_DESCQ_JUMBO, jumbo);
1673
1674         EFX_BAR_TBL_WRITEO(enp, FR_AZ_RX_DESC_PTR_TBL,
1675                             erp->er_index, &oword, B_TRUE);
1676
1677         return (0);
1678
1679 #if !EFSYS_OPT_RX_SCATTER
1680 fail4:
1681         EFSYS_PROBE(fail4);
1682 #endif
1683 fail3:
1684         EFSYS_PROBE(fail3);
1685 fail2:
1686         EFSYS_PROBE(fail2);
1687 fail1:
1688         EFSYS_PROBE1(fail1, efx_rc_t, rc);
1689
1690         return (rc);
1691 }
1692
1693 static          void
1694 siena_rx_qdestroy(
1695         __in    efx_rxq_t *erp)
1696 {
1697         efx_nic_t *enp = erp->er_enp;
1698         efx_oword_t oword;
1699
1700         EFSYS_ASSERT(enp->en_rx_qcount != 0);
1701         --enp->en_rx_qcount;
1702
1703         /* Purge descriptor queue */
1704         EFX_ZERO_OWORD(oword);
1705
1706         EFX_BAR_TBL_WRITEO(enp, FR_AZ_RX_DESC_PTR_TBL,
1707                             erp->er_index, &oword, B_TRUE);
1708
1709         /* Free the RXQ object */
1710         EFSYS_KMEM_FREE(enp->en_esip, sizeof (efx_rxq_t), erp);
1711 }
1712
1713 static          void
1714 siena_rx_fini(
1715         __in    efx_nic_t *enp)
1716 {
1717         _NOTE(ARGUNUSED(enp))
1718 }
1719
1720 #endif /* EFSYS_OPT_SIENA */