drivers/net/sfc/base/efx_ev.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 #if EFSYS_OPT_MON_MCDI
  10 #include "mcdi_mon.h"
  11 #endif
  12
  13 #if EFSYS_OPT_QSTATS
  14 #define EFX_EV_QSTAT_INCR(_eep, _stat)                                  \
  15         do {                                                            \
  16                 (_eep)->ee_stat[_stat]++;                               \
  17         _NOTE(CONSTANTCONDITION)                                        \
  18         } while (B_FALSE)
  19 #else
  20 #define EFX_EV_QSTAT_INCR(_eep, _stat)
  21 #endif
  22
  23 #define EFX_EV_PRESENT(_qword)                                          \
  24         (EFX_QWORD_FIELD((_qword), EFX_DWORD_0) != 0xffffffff &&        \
  25         EFX_QWORD_FIELD((_qword), EFX_DWORD_1) != 0xffffffff)
  26
  27
  28
  29 #if EFSYS_OPT_SIENA
  30
  31 static  __checkReturn   efx_rc_t
  32 siena_ev_init(
  33         __in            efx_nic_t *enp);
  34
  35 static                  void
  36 siena_ev_fini(
  37         __in            efx_nic_t *enp);
  38
  39 static  __checkReturn   efx_rc_t
  40 siena_ev_qcreate(
  41         __in            efx_nic_t *enp,
  42         __in            unsigned int index,
  43         __in            efsys_mem_t *esmp,
  44         __in            size_t ndescs,
  45         __in            uint32_t id,
  46         __in            uint32_t us,
  47         __in            uint32_t flags,
  48         __in            efx_evq_t *eep);
  49
  50 static                  void
  51 siena_ev_qdestroy(
  52         __in            efx_evq_t *eep);
  53
  54 static  __checkReturn   efx_rc_t
  55 siena_ev_qprime(
  56         __in            efx_evq_t *eep,
  57         __in            unsigned int count);
  58
  59 static                  void
  60 siena_ev_qpost(
  61         __in    efx_evq_t *eep,
  62         __in    uint16_t data);
  63
  64 static  __checkReturn   efx_rc_t
  65 siena_ev_qmoderate(
  66         __in            efx_evq_t *eep,
  67         __in            unsigned int us);
  68
  69 #if EFSYS_OPT_QSTATS
  70 static                  void
  71 siena_ev_qstats_update(
  72         __in                            efx_evq_t *eep,
  73         __inout_ecount(EV_NQSTATS)      efsys_stat_t *stat);
  74
  75 #endif
  76
  77 #endif /* EFSYS_OPT_SIENA */
  78
  79 #if EFSYS_OPT_SIENA
  80 static const efx_ev_ops_t       __efx_ev_siena_ops = {
  81         siena_ev_init,                          /* eevo_init */
  82         siena_ev_fini,                          /* eevo_fini */
  83         siena_ev_qcreate,                       /* eevo_qcreate */
  84         siena_ev_qdestroy,                      /* eevo_qdestroy */
  85         siena_ev_qprime,                        /* eevo_qprime */
  86         siena_ev_qpost,                         /* eevo_qpost */
  87         siena_ev_qmoderate,                     /* eevo_qmoderate */
  88 #if EFSYS_OPT_QSTATS
  89         siena_ev_qstats_update,                 /* eevo_qstats_update */
  90 #endif
  91 };
  92 #endif /* EFSYS_OPT_SIENA */
  93
  94 #if EFSYS_OPT_HUNTINGTON || EFSYS_OPT_MEDFORD || EFSYS_OPT_MEDFORD2
  95 static const efx_ev_ops_t       __efx_ev_ef10_ops = {
  96         ef10_ev_init,                           /* eevo_init */
  97         ef10_ev_fini,                           /* eevo_fini */
  98         ef10_ev_qcreate,                        /* eevo_qcreate */
  99         ef10_ev_qdestroy,                       /* eevo_qdestroy */
 100         ef10_ev_qprime,                         /* eevo_qprime */
 101         ef10_ev_qpost,                          /* eevo_qpost */
 102         ef10_ev_qmoderate,                      /* eevo_qmoderate */
 103 #if EFSYS_OPT_QSTATS
 104         ef10_ev_qstats_update,                  /* eevo_qstats_update */
 105 #endif
 106 };
 107 #endif /* EFSYS_OPT_HUNTINGTON || EFSYS_OPT_MEDFORD || EFSYS_OPT_MEDFORD2 */
 108
 109
 110         __checkReturn   efx_rc_t
 111 efx_ev_init(
 112         __in            efx_nic_t *enp)
 113 {
 114         const efx_ev_ops_t *eevop;
 115         efx_rc_t rc;
 116
 117         EFSYS_ASSERT3U(enp->en_magic, ==, EFX_NIC_MAGIC);
 118         EFSYS_ASSERT3U(enp->en_mod_flags, &, EFX_MOD_INTR);
 119
 120         if (enp->en_mod_flags & EFX_MOD_EV) {
 121                 rc = EINVAL;
 122                 goto fail1;
 123         }
 124
 125         switch (enp->en_family) {
 126 #if EFSYS_OPT_SIENA
 127         case EFX_FAMILY_SIENA:
 128                 eevop = &__efx_ev_siena_ops;
 129                 break;
 130 #endif /* EFSYS_OPT_SIENA */
 131
 132 #if EFSYS_OPT_HUNTINGTON
 133         case EFX_FAMILY_HUNTINGTON:
 134                 eevop = &__efx_ev_ef10_ops;
 135                 break;
 136 #endif /* EFSYS_OPT_HUNTINGTON */
 137
 138 #if EFSYS_OPT_MEDFORD
 139         case EFX_FAMILY_MEDFORD:
 140                 eevop = &__efx_ev_ef10_ops;
 141                 break;
 142 #endif /* EFSYS_OPT_MEDFORD */
 143
 144 #if EFSYS_OPT_MEDFORD2
 145         case EFX_FAMILY_MEDFORD2:
 146                 eevop = &__efx_ev_ef10_ops;
 147                 break;
 148 #endif /* EFSYS_OPT_MEDFORD2 */
 149
 150         default:
 151                 EFSYS_ASSERT(0);
 152                 rc = ENOTSUP;
 153                 goto fail1;
 154         }
 155
 156         EFSYS_ASSERT3U(enp->en_ev_qcount, ==, 0);
 157
 158         if ((rc = eevop->eevo_init(enp)) != 0)
 159                 goto fail2;
 160
 161         enp->en_eevop = eevop;
 162         enp->en_mod_flags |= EFX_MOD_EV;
 163         return (0);
 164
 165 fail2:
 166         EFSYS_PROBE(fail2);
 167
 168 fail1:
 169         EFSYS_PROBE1(fail1, efx_rc_t, rc);
 170
 171         enp->en_eevop = NULL;
 172         enp->en_mod_flags &= ~EFX_MOD_EV;
 173         return (rc);
 174 }
 175
 176                 void
 177 efx_ev_fini(
 178         __in    efx_nic_t *enp)
 179 {
 180         const efx_ev_ops_t *eevop = enp->en_eevop;
 181
 182         EFSYS_ASSERT3U(enp->en_magic, ==, EFX_NIC_MAGIC);
 183         EFSYS_ASSERT3U(enp->en_mod_flags, &, EFX_MOD_INTR);
 184         EFSYS_ASSERT3U(enp->en_mod_flags, &, EFX_MOD_EV);
 185         EFSYS_ASSERT(!(enp->en_mod_flags & EFX_MOD_RX));
 186         EFSYS_ASSERT(!(enp->en_mod_flags & EFX_MOD_TX));
 187         EFSYS_ASSERT3U(enp->en_ev_qcount, ==, 0);
 188
 189         eevop->eevo_fini(enp);
 190
 191         enp->en_eevop = NULL;
 192         enp->en_mod_flags &= ~EFX_MOD_EV;
 193 }
 194
 195
 196         __checkReturn   efx_rc_t
 197 efx_ev_qcreate(
 198         __in            efx_nic_t *enp,
 199         __in            unsigned int index,
 200         __in            efsys_mem_t *esmp,
 201         __in            size_t ndescs,
 202         __in            uint32_t id,
 203         __in            uint32_t us,
 204         __in            uint32_t flags,
 205         __deref_out     efx_evq_t **eepp)
 206 {
 207         const efx_ev_ops_t *eevop = enp->en_eevop;
 208         efx_evq_t *eep;
 209         efx_rc_t rc;
 210
 211         EFSYS_ASSERT3U(enp->en_magic, ==, EFX_NIC_MAGIC);
 212         EFSYS_ASSERT3U(enp->en_mod_flags, &, EFX_MOD_EV);
 213
 214         EFSYS_ASSERT3U(enp->en_ev_qcount + 1, <,
 215             enp->en_nic_cfg.enc_evq_limit);
 216
 217         switch (flags & EFX_EVQ_FLAGS_NOTIFY_MASK) {
 218         case EFX_EVQ_FLAGS_NOTIFY_INTERRUPT:
 219                 break;
 220         case EFX_EVQ_FLAGS_NOTIFY_DISABLED:
 221                 if (us != 0) {
 222                         rc = EINVAL;
 223                         goto fail1;
 224                 }
 225                 break;
 226         default:
 227                 rc = EINVAL;
 228                 goto fail2;
 229         }
 230
 231         /* Allocate an EVQ object */
 232         EFSYS_KMEM_ALLOC(enp->en_esip, sizeof (efx_evq_t), eep);
 233         if (eep == NULL) {
 234                 rc = ENOMEM;
 235                 goto fail3;
 236         }
 237
 238         eep->ee_magic = EFX_EVQ_MAGIC;
 239         eep->ee_enp = enp;
 240         eep->ee_index = index;
 241         eep->ee_mask = ndescs - 1;
 242         eep->ee_flags = flags;
 243         eep->ee_esmp = esmp;
 244
 245         /*
 246          * Set outputs before the queue is created because interrupts may be
 247          * raised for events immediately after the queue is created, before the
 248          * function call below returns. See bug58606.
 249          *
 250          * The eepp pointer passed in by the client must therefore point to data
 251          * shared with the client's event processing context.
 252          */
 253         enp->en_ev_qcount++;
 254         *eepp = eep;
 255
 256         if ((rc = eevop->eevo_qcreate(enp, index, esmp, ndescs, id, us, flags,
 257             eep)) != 0)
 258                 goto fail4;
 259
 260         return (0);
 261
 262 fail4:
 263         EFSYS_PROBE(fail4);
 264
 265         *eepp = NULL;
 266         enp->en_ev_qcount--;
 267         EFSYS_KMEM_FREE(enp->en_esip, sizeof (efx_evq_t), eep);
 268 fail3:
 269         EFSYS_PROBE(fail3);
 270 fail2:
 271         EFSYS_PROBE(fail2);
 272 fail1:
 273         EFSYS_PROBE1(fail1, efx_rc_t, rc);
 274         return (rc);
 275 }
 276
 277                 void
 278 efx_ev_qdestroy(
 279         __in    efx_evq_t *eep)
 280 {
 281         efx_nic_t *enp = eep->ee_enp;
 282         const efx_ev_ops_t *eevop = enp->en_eevop;
 283
 284         EFSYS_ASSERT3U(eep->ee_magic, ==, EFX_EVQ_MAGIC);
 285
 286         EFSYS_ASSERT(enp->en_ev_qcount != 0);
 287         --enp->en_ev_qcount;
 288
 289         eevop->eevo_qdestroy(eep);
 290
 291         /* Free the EVQ object */
 292         EFSYS_KMEM_FREE(enp->en_esip, sizeof (efx_evq_t), eep);
 293 }
 294
 295         __checkReturn   efx_rc_t
 296 efx_ev_qprime(
 297         __in            efx_evq_t *eep,
 298         __in            unsigned int count)
 299 {
 300         efx_nic_t *enp = eep->ee_enp;
 301         const efx_ev_ops_t *eevop = enp->en_eevop;
 302         efx_rc_t rc;
 303
 304         EFSYS_ASSERT3U(eep->ee_magic, ==, EFX_EVQ_MAGIC);
 305
 306         if (!(enp->en_mod_flags & EFX_MOD_INTR)) {
 307                 rc = EINVAL;
 308                 goto fail1;
 309         }
 310
 311         if ((rc = eevop->eevo_qprime(eep, count)) != 0)
 312                 goto fail2;
 313
 314         return (0);
 315
 316 fail2:
 317         EFSYS_PROBE(fail2);
 318 fail1:
 319         EFSYS_PROBE1(fail1, efx_rc_t, rc);
 320         return (rc);
 321 }
 322
 323         __checkReturn   boolean_t
 324 efx_ev_qpending(
 325         __in            efx_evq_t *eep,
 326         __in            unsigned int count)
 327 {
 328         size_t offset;
 329         efx_qword_t qword;
 330
 331         EFSYS_ASSERT3U(eep->ee_magic, ==, EFX_EVQ_MAGIC);
 332
 333         offset = (count & eep->ee_mask) * sizeof (efx_qword_t);
 334         EFSYS_MEM_READQ(eep->ee_esmp, offset, &qword);
 335
 336         return (EFX_EV_PRESENT(qword));
 337 }
 338
 339 #if EFSYS_OPT_EV_PREFETCH
 340
 341                         void
 342 efx_ev_qprefetch(
 343         __in            efx_evq_t *eep,
 344         __in            unsigned int count)
 345 {
 346         unsigned int offset;
 347
 348         EFSYS_ASSERT3U(eep->ee_magic, ==, EFX_EVQ_MAGIC);
 349
 350         offset = (count & eep->ee_mask) * sizeof (efx_qword_t);
 351         EFSYS_MEM_PREFETCH(eep->ee_esmp, offset);
 352 }
 353
 354 #endif  /* EFSYS_OPT_EV_PREFETCH */
 355
 356 #define EFX_EV_BATCH    8
 357
 358                         void
 359 efx_ev_qpoll(
 360         __in            efx_evq_t *eep,
 361         __inout         unsigned int *countp,
 362         __in            const efx_ev_callbacks_t *eecp,
 363         __in_opt        void *arg)
 364 {
 365         efx_qword_t ev[EFX_EV_BATCH];
 366         unsigned int batch;
 367         unsigned int total;
 368         unsigned int count;
 369         unsigned int index;
 370         size_t offset;
 371
 372         /* Ensure events codes match for EF10 (Huntington/Medford) and Siena */
 373         EFX_STATIC_ASSERT(ESF_DZ_EV_CODE_LBN == FSF_AZ_EV_CODE_LBN);
 374         EFX_STATIC_ASSERT(ESF_DZ_EV_CODE_WIDTH == FSF_AZ_EV_CODE_WIDTH);
 375
 376         EFX_STATIC_ASSERT(ESE_DZ_EV_CODE_RX_EV == FSE_AZ_EV_CODE_RX_EV);
 377         EFX_STATIC_ASSERT(ESE_DZ_EV_CODE_TX_EV == FSE_AZ_EV_CODE_TX_EV);
 378         EFX_STATIC_ASSERT(ESE_DZ_EV_CODE_DRIVER_EV == FSE_AZ_EV_CODE_DRIVER_EV);
 379         EFX_STATIC_ASSERT(ESE_DZ_EV_CODE_DRV_GEN_EV ==
 380             FSE_AZ_EV_CODE_DRV_GEN_EV);
 381 #if EFSYS_OPT_MCDI
 382         EFX_STATIC_ASSERT(ESE_DZ_EV_CODE_MCDI_EV ==
 383             FSE_AZ_EV_CODE_MCDI_EVRESPONSE);
 384 #endif
 385
 386         EFSYS_ASSERT3U(eep->ee_magic, ==, EFX_EVQ_MAGIC);
 387         EFSYS_ASSERT(countp != NULL);
 388         EFSYS_ASSERT(eecp != NULL);
 389
 390         count = *countp;
 391         do {
 392                 /* Read up until the end of the batch period */
 393                 batch = EFX_EV_BATCH - (count & (EFX_EV_BATCH - 1));
 394                 offset = (count & eep->ee_mask) * sizeof (efx_qword_t);
 395                 for (total = 0; total < batch; ++total) {
 396                         EFSYS_MEM_READQ(eep->ee_esmp, offset, &(ev[total]));
 397
 398                         if (!EFX_EV_PRESENT(ev[total]))
 399                                 break;
 400
 401                         EFSYS_PROBE3(event, unsigned int, eep->ee_index,
 402                             uint32_t, EFX_QWORD_FIELD(ev[total], EFX_DWORD_1),
 403                             uint32_t, EFX_QWORD_FIELD(ev[total], EFX_DWORD_0));
 404
 405                         offset += sizeof (efx_qword_t);
 406                 }
 407
 408 #if EFSYS_OPT_EV_PREFETCH && (EFSYS_OPT_EV_PREFETCH_PERIOD > 1)
 409                 /*
 410                  * Prefetch the next batch when we get within PREFETCH_PERIOD
 411                  * of a completed batch. If the batch is smaller, then prefetch
 412                  * immediately.
 413                  */
 414                 if (total == batch && total < EFSYS_OPT_EV_PREFETCH_PERIOD)
 415                         EFSYS_MEM_PREFETCH(eep->ee_esmp, offset);
 416 #endif  /* EFSYS_OPT_EV_PREFETCH */
 417
 418                 /* Process the batch of events */
 419                 for (index = 0; index < total; ++index) {
 420                         boolean_t should_abort;
 421                         uint32_t code;
 422
 423 #if EFSYS_OPT_EV_PREFETCH
 424                         /* Prefetch if we've now reached the batch period */
 425                         if (total == batch &&
 426                             index + EFSYS_OPT_EV_PREFETCH_PERIOD == total) {
 427                                 offset = (count + batch) & eep->ee_mask;
 428                                 offset *= sizeof (efx_qword_t);
 429
 430                                 EFSYS_MEM_PREFETCH(eep->ee_esmp, offset);
 431                         }
 432 #endif  /* EFSYS_OPT_EV_PREFETCH */
 433
 434                         EFX_EV_QSTAT_INCR(eep, EV_ALL);
 435
 436                         code = EFX_QWORD_FIELD(ev[index], FSF_AZ_EV_CODE);
 437                         switch (code) {
 438                         case FSE_AZ_EV_CODE_RX_EV:
 439                                 should_abort = eep->ee_rx(eep,
 440                                     &(ev[index]), eecp, arg);
 441                                 break;
 442                         case FSE_AZ_EV_CODE_TX_EV:
 443                                 should_abort = eep->ee_tx(eep,
 444                                     &(ev[index]), eecp, arg);
 445                                 break;
 446                         case FSE_AZ_EV_CODE_DRIVER_EV:
 447                                 should_abort = eep->ee_driver(eep,
 448                                     &(ev[index]), eecp, arg);
 449                                 break;
 450                         case FSE_AZ_EV_CODE_DRV_GEN_EV:
 451                                 should_abort = eep->ee_drv_gen(eep,
 452                                     &(ev[index]), eecp, arg);
 453                                 break;
 454 #if EFSYS_OPT_MCDI
 455                         case FSE_AZ_EV_CODE_MCDI_EVRESPONSE:
 456                                 should_abort = eep->ee_mcdi(eep,
 457                                     &(ev[index]), eecp, arg);
 458                                 break;
 459 #endif
 460                         case FSE_AZ_EV_CODE_GLOBAL_EV:
 461                                 if (eep->ee_global) {
 462                                         should_abort = eep->ee_global(eep,
 463                                             &(ev[index]), eecp, arg);
 464                                         break;
 465                                 }
 466                                 /* else fallthrough */
 467                         default:
 468                                 EFSYS_PROBE3(bad_event,
 469                                     unsigned int, eep->ee_index,
 470                                     uint32_t,
 471                                     EFX_QWORD_FIELD(ev[index], EFX_DWORD_1),
 472                                     uint32_t,
 473                                     EFX_QWORD_FIELD(ev[index], EFX_DWORD_0));
 474
 475                                 EFSYS_ASSERT(eecp->eec_exception != NULL);
 476                                 (void) eecp->eec_exception(arg,
 477                                         EFX_EXCEPTION_EV_ERROR, code);
 478                                 should_abort = B_TRUE;
 479                         }
 480                         if (should_abort) {
 481                                 /* Ignore subsequent events */
 482                                 total = index + 1;
 483
 484                                 /*
 485                                  * Poison batch to ensure the outer
 486                                  * loop is broken out of.
 487                                  */
 488                                 EFSYS_ASSERT(batch <= EFX_EV_BATCH);
 489                                 batch += (EFX_EV_BATCH << 1);
 490                                 EFSYS_ASSERT(total != batch);
 491                                 break;
 492                         }
 493                 }
 494
 495                 /*
 496                  * Now that the hardware has most likely moved onto dma'ing
 497                  * into the next cache line, clear the processed events. Take
 498                  * care to only clear out events that we've processed
 499                  */
 500                 EFX_SET_QWORD(ev[0]);
 501                 offset = (count & eep->ee_mask) * sizeof (efx_qword_t);
 502                 for (index = 0; index < total; ++index) {
 503                         EFSYS_MEM_WRITEQ(eep->ee_esmp, offset, &(ev[0]));
 504                         offset += sizeof (efx_qword_t);
 505                 }
 506
 507                 count += total;
 508
 509         } while (total == batch);
 510
 511         *countp = count;
 512 }
 513
 514                         void
 515 efx_ev_qpost(
 516         __in    efx_evq_t *eep,
 517         __in    uint16_t data)
 518 {
 519         efx_nic_t *enp = eep->ee_enp;
 520         const efx_ev_ops_t *eevop = enp->en_eevop;
 521
 522         EFSYS_ASSERT3U(eep->ee_magic, ==, EFX_EVQ_MAGIC);
 523
 524         EFSYS_ASSERT(eevop != NULL &&
 525             eevop->eevo_qpost != NULL);
 526
 527         eevop->eevo_qpost(eep, data);
 528 }
 529
 530         __checkReturn   efx_rc_t
 531 efx_ev_usecs_to_ticks(
 532         __in            efx_nic_t *enp,
 533         __in            unsigned int us,
 534         __out           unsigned int *ticksp)
 535 {
 536         efx_nic_cfg_t *encp = &(enp->en_nic_cfg);
 537         unsigned int ticks;
 538
 539         /* Convert microseconds to a timer tick count */
 540         if (us == 0)
 541                 ticks = 0;
 542         else if (us * 1000 < encp->enc_evq_timer_quantum_ns)
 543                 ticks = 1;      /* Never round down to zero */
 544         else
 545                 ticks = us * 1000 / encp->enc_evq_timer_quantum_ns;
 546
 547         *ticksp = ticks;
 548         return (0);
 549 }
 550
 551         __checkReturn   efx_rc_t
 552 efx_ev_qmoderate(
 553         __in            efx_evq_t *eep,
 554         __in            unsigned int us)
 555 {
 556         efx_nic_t *enp = eep->ee_enp;
 557         const efx_ev_ops_t *eevop = enp->en_eevop;
 558         efx_rc_t rc;
 559
 560         EFSYS_ASSERT3U(eep->ee_magic, ==, EFX_EVQ_MAGIC);
 561
 562         if ((eep->ee_flags & EFX_EVQ_FLAGS_NOTIFY_MASK) ==
 563             EFX_EVQ_FLAGS_NOTIFY_DISABLED) {
 564                 rc = EINVAL;
 565                 goto fail1;
 566         }
 567
 568         if ((rc = eevop->eevo_qmoderate(eep, us)) != 0)
 569                 goto fail2;
 570
 571         return (0);
 572
 573 fail2:
 574         EFSYS_PROBE(fail2);
 575 fail1:
 576         EFSYS_PROBE1(fail1, efx_rc_t, rc);
 577         return (rc);
 578 }
 579
 580 #if EFSYS_OPT_QSTATS
 581                                         void
 582 efx_ev_qstats_update(
 583         __in                            efx_evq_t *eep,
 584         __inout_ecount(EV_NQSTATS)      efsys_stat_t *stat)
 585
 586 {       efx_nic_t *enp = eep->ee_enp;
 587         const efx_ev_ops_t *eevop = enp->en_eevop;
 588
 589         EFSYS_ASSERT3U(eep->ee_magic, ==, EFX_EVQ_MAGIC);
 590
 591         eevop->eevo_qstats_update(eep, stat);
 592 }
 593
 594 #endif  /* EFSYS_OPT_QSTATS */
 595
 596 #if EFSYS_OPT_SIENA
 597
 598 static  __checkReturn   efx_rc_t
 599 siena_ev_init(
 600         __in            efx_nic_t *enp)
 601 {
 602         efx_oword_t oword;
 603
 604         /*
 605          * Program the event queue for receive and transmit queue
 606          * flush events.
 607          */
 608         EFX_BAR_READO(enp, FR_AZ_DP_CTRL_REG, &oword);
 609         EFX_SET_OWORD_FIELD(oword, FRF_AZ_FLS_EVQ_ID, 0);
 610         EFX_BAR_WRITEO(enp, FR_AZ_DP_CTRL_REG, &oword);
 611
 612         return (0);
 613
 614 }
 615
 616 static  __checkReturn   boolean_t
 617 siena_ev_rx_not_ok(
 618         __in            efx_evq_t *eep,
 619         __in            efx_qword_t *eqp,
 620         __in            uint32_t label,
 621         __in            uint32_t id,
 622         __inout         uint16_t *flagsp)
 623 {
 624         boolean_t ignore = B_FALSE;
 625
 626         if (EFX_QWORD_FIELD(*eqp, FSF_AZ_RX_EV_TOBE_DISC) != 0) {
 627                 EFX_EV_QSTAT_INCR(eep, EV_RX_TOBE_DISC);
 628                 EFSYS_PROBE(tobe_disc);
 629                 /*
 630                  * Assume this is a unicast address mismatch, unless below
 631                  * we find either FSF_AZ_RX_EV_ETH_CRC_ERR or
 632                  * EV_RX_PAUSE_FRM_ERR is set.
 633                  */
 634                 (*flagsp) |= EFX_ADDR_MISMATCH;
 635         }
 636
 637         if (EFX_QWORD_FIELD(*eqp, FSF_AZ_RX_EV_FRM_TRUNC) != 0) {
 638                 EFSYS_PROBE2(frm_trunc, uint32_t, label, uint32_t, id);
 639                 EFX_EV_QSTAT_INCR(eep, EV_RX_FRM_TRUNC);
 640                 (*flagsp) |= EFX_DISCARD;
 641
 642 #if EFSYS_OPT_RX_SCATTER
 643                 /*
 644                  * Lookout for payload queue ran dry errors and ignore them.
 645                  *
 646                  * Sadly for the header/data split cases, the descriptor
 647                  * pointer in this event refers to the header queue and
 648                  * therefore cannot be easily detected as duplicate.
 649                  * So we drop these and rely on the receive processing seeing
 650                  * a subsequent packet with FSF_AZ_RX_EV_SOP set to discard
 651                  * the partially received packet.
 652                  */
 653                 if ((EFX_QWORD_FIELD(*eqp, FSF_AZ_RX_EV_SOP) == 0) &&
 654                     (EFX_QWORD_FIELD(*eqp, FSF_AZ_RX_EV_JUMBO_CONT) == 0) &&
 655                     (EFX_QWORD_FIELD(*eqp, FSF_AZ_RX_EV_BYTE_CNT) == 0))
 656                         ignore = B_TRUE;
 657 #endif  /* EFSYS_OPT_RX_SCATTER */
 658         }
 659
 660         if (EFX_QWORD_FIELD(*eqp, FSF_AZ_RX_EV_ETH_CRC_ERR) != 0) {
 661                 EFX_EV_QSTAT_INCR(eep, EV_RX_ETH_CRC_ERR);
 662                 EFSYS_PROBE(crc_err);
 663                 (*flagsp) &= ~EFX_ADDR_MISMATCH;
 664                 (*flagsp) |= EFX_DISCARD;
 665         }
 666
 667         if (EFX_QWORD_FIELD(*eqp, FSF_AZ_RX_EV_PAUSE_FRM_ERR) != 0) {
 668                 EFX_EV_QSTAT_INCR(eep, EV_RX_PAUSE_FRM_ERR);
 669                 EFSYS_PROBE(pause_frm_err);
 670                 (*flagsp) &= ~EFX_ADDR_MISMATCH;
 671                 (*flagsp) |= EFX_DISCARD;
 672         }
 673
 674         if (EFX_QWORD_FIELD(*eqp, FSF_AZ_RX_EV_BUF_OWNER_ID_ERR) != 0) {
 675                 EFX_EV_QSTAT_INCR(eep, EV_RX_BUF_OWNER_ID_ERR);
 676                 EFSYS_PROBE(owner_id_err);
 677                 (*flagsp) |= EFX_DISCARD;
 678         }
 679
 680         if (EFX_QWORD_FIELD(*eqp, FSF_AZ_RX_EV_IP_HDR_CHKSUM_ERR) != 0) {
 681                 EFX_EV_QSTAT_INCR(eep, EV_RX_IPV4_HDR_CHKSUM_ERR);
 682                 EFSYS_PROBE(ipv4_err);
 683                 (*flagsp) &= ~EFX_CKSUM_IPV4;
 684         }
 685
 686         if (EFX_QWORD_FIELD(*eqp, FSF_AZ_RX_EV_TCP_UDP_CHKSUM_ERR) != 0) {
 687                 EFX_EV_QSTAT_INCR(eep, EV_RX_TCP_UDP_CHKSUM_ERR);
 688                 EFSYS_PROBE(udp_chk_err);
 689                 (*flagsp) &= ~EFX_CKSUM_TCPUDP;
 690         }
 691
 692         if (EFX_QWORD_FIELD(*eqp, FSF_AZ_RX_EV_IP_FRAG_ERR) != 0) {
 693                 EFX_EV_QSTAT_INCR(eep, EV_RX_IP_FRAG_ERR);
 694
 695                 /*
 696                  * If IP is fragmented FSF_AZ_RX_EV_IP_FRAG_ERR is set. This
 697                  * causes FSF_AZ_RX_EV_PKT_OK to be clear. This is not an error
 698                  * condition.
 699                  */
 700                 (*flagsp) &= ~(EFX_PKT_TCP | EFX_PKT_UDP | EFX_CKSUM_TCPUDP);
 701         }
 702
 703         return (ignore);
 704 }
 705
 706 static  __checkReturn   boolean_t
 707 siena_ev_rx(
 708         __in            efx_evq_t *eep,
 709         __in            efx_qword_t *eqp,
 710         __in            const efx_ev_callbacks_t *eecp,
 711         __in_opt        void *arg)
 712 {
 713         uint32_t id;
 714         uint32_t size;
 715         uint32_t label;
 716         boolean_t ok;
 717 #if EFSYS_OPT_RX_SCATTER
 718         boolean_t sop;
 719         boolean_t jumbo_cont;
 720 #endif  /* EFSYS_OPT_RX_SCATTER */
 721         uint32_t hdr_type;
 722         boolean_t is_v6;
 723         uint16_t flags;
 724         boolean_t ignore;
 725         boolean_t should_abort;
 726
 727         EFX_EV_QSTAT_INCR(eep, EV_RX);
 728
 729         /* Basic packet information */
 730         id = EFX_QWORD_FIELD(*eqp, FSF_AZ_RX_EV_DESC_PTR);
 731         size = EFX_QWORD_FIELD(*eqp, FSF_AZ_RX_EV_BYTE_CNT);
 732         label = EFX_QWORD_FIELD(*eqp, FSF_AZ_RX_EV_Q_LABEL);
 733         ok = (EFX_QWORD_FIELD(*eqp, FSF_AZ_RX_EV_PKT_OK) != 0);
 734
 735 #if EFSYS_OPT_RX_SCATTER
 736         sop = (EFX_QWORD_FIELD(*eqp, FSF_AZ_RX_EV_SOP) != 0);
 737         jumbo_cont = (EFX_QWORD_FIELD(*eqp, FSF_AZ_RX_EV_JUMBO_CONT) != 0);
 738 #endif  /* EFSYS_OPT_RX_SCATTER */
 739
 740         hdr_type = EFX_QWORD_FIELD(*eqp, FSF_AZ_RX_EV_HDR_TYPE);
 741
 742         is_v6 = (EFX_QWORD_FIELD(*eqp, FSF_CZ_RX_EV_IPV6_PKT) != 0);
 743
 744         /*
 745          * If packet is marked as OK and packet type is TCP/IP or
 746          * UDP/IP or other IP, then we can rely on the hardware checksums.
 747          */
 748         switch (hdr_type) {
 749         case FSE_AZ_RX_EV_HDR_TYPE_IPV4V6_TCP:
 750                 flags = EFX_PKT_TCP | EFX_CKSUM_TCPUDP;
 751                 if (is_v6) {
 752                         EFX_EV_QSTAT_INCR(eep, EV_RX_TCP_IPV6);
 753                         flags |= EFX_PKT_IPV6;
 754                 } else {
 755                         EFX_EV_QSTAT_INCR(eep, EV_RX_TCP_IPV4);
 756                         flags |= EFX_PKT_IPV4 | EFX_CKSUM_IPV4;
 757                 }
 758                 break;
 759
 760         case FSE_AZ_RX_EV_HDR_TYPE_IPV4V6_UDP:
 761                 flags = EFX_PKT_UDP | EFX_CKSUM_TCPUDP;
 762                 if (is_v6) {
 763                         EFX_EV_QSTAT_INCR(eep, EV_RX_UDP_IPV6);
 764                         flags |= EFX_PKT_IPV6;
 765                 } else {
 766                         EFX_EV_QSTAT_INCR(eep, EV_RX_UDP_IPV4);
 767                         flags |= EFX_PKT_IPV4 | EFX_CKSUM_IPV4;
 768                 }
 769                 break;
 770
 771         case FSE_AZ_RX_EV_HDR_TYPE_IPV4V6_OTHER:
 772                 if (is_v6) {
 773                         EFX_EV_QSTAT_INCR(eep, EV_RX_OTHER_IPV6);
 774                         flags = EFX_PKT_IPV6;
 775                 } else {
 776                         EFX_EV_QSTAT_INCR(eep, EV_RX_OTHER_IPV4);
 777                         flags = EFX_PKT_IPV4 | EFX_CKSUM_IPV4;
 778                 }
 779                 break;
 780
 781         case FSE_AZ_RX_EV_HDR_TYPE_OTHER:
 782                 EFX_EV_QSTAT_INCR(eep, EV_RX_NON_IP);
 783                 flags = 0;
 784                 break;
 785
 786         default:
 787                 EFSYS_ASSERT(B_FALSE);
 788                 flags = 0;
 789                 break;
 790         }
 791
 792 #if EFSYS_OPT_RX_SCATTER
 793         /* Report scatter and header/lookahead split buffer flags */
 794         if (sop)
 795                 flags |= EFX_PKT_START;
 796         if (jumbo_cont)
 797                 flags |= EFX_PKT_CONT;
 798 #endif  /* EFSYS_OPT_RX_SCATTER */
 799
 800         /* Detect errors included in the FSF_AZ_RX_EV_PKT_OK indication */
 801         if (!ok) {
 802                 ignore = siena_ev_rx_not_ok(eep, eqp, label, id, &flags);
 803                 if (ignore) {
 804                         EFSYS_PROBE4(rx_complete, uint32_t, label, uint32_t, id,
 805                             uint32_t, size, uint16_t, flags);
 806
 807                         return (B_FALSE);
 808                 }
 809         }
 810
 811         /* If we're not discarding the packet then it is ok */
 812         if (~flags & EFX_DISCARD)
 813                 EFX_EV_QSTAT_INCR(eep, EV_RX_OK);
 814
 815         /* Detect multicast packets that didn't match the filter */
 816         if (EFX_QWORD_FIELD(*eqp, FSF_AZ_RX_EV_MCAST_PKT) != 0) {
 817                 EFX_EV_QSTAT_INCR(eep, EV_RX_MCAST_PKT);
 818
 819                 if (EFX_QWORD_FIELD(*eqp, FSF_AZ_RX_EV_MCAST_HASH_MATCH) != 0) {
 820                         EFX_EV_QSTAT_INCR(eep, EV_RX_MCAST_HASH_MATCH);
 821                 } else {
 822                         EFSYS_PROBE(mcast_mismatch);
 823                         flags |= EFX_ADDR_MISMATCH;
 824                 }
 825         } else {
 826                 flags |= EFX_PKT_UNICAST;
 827         }
 828
 829         /*
 830          * The packet parser in Siena can abort parsing packets under
 831          * certain error conditions, setting the PKT_NOT_PARSED bit
 832          * (which clears PKT_OK). If this is set, then don't trust
 833          * the PKT_TYPE field.
 834          */
 835         if (!ok) {
 836                 uint32_t parse_err;
 837
 838                 parse_err = EFX_QWORD_FIELD(*eqp, FSF_CZ_RX_EV_PKT_NOT_PARSED);
 839                 if (parse_err != 0)
 840                         flags |= EFX_CHECK_VLAN;
 841         }
 842
 843         if (~flags & EFX_CHECK_VLAN) {
 844                 uint32_t pkt_type;
 845
 846                 pkt_type = EFX_QWORD_FIELD(*eqp, FSF_AZ_RX_EV_PKT_TYPE);
 847                 if (pkt_type >= FSE_AZ_RX_EV_PKT_TYPE_VLAN)
 848                         flags |= EFX_PKT_VLAN_TAGGED;
 849         }
 850
 851         EFSYS_PROBE4(rx_complete, uint32_t, label, uint32_t, id,
 852             uint32_t, size, uint16_t, flags);
 853
 854         EFSYS_ASSERT(eecp->eec_rx != NULL);
 855         should_abort = eecp->eec_rx(arg, label, id, size, flags);
 856
 857         return (should_abort);
 858 }
 859
 860 static  __checkReturn   boolean_t
 861 siena_ev_tx(
 862         __in            efx_evq_t *eep,
 863         __in            efx_qword_t *eqp,
 864         __in            const efx_ev_callbacks_t *eecp,
 865         __in_opt        void *arg)
 866 {
 867         uint32_t id;
 868         uint32_t label;
 869         boolean_t should_abort;
 870
 871         EFX_EV_QSTAT_INCR(eep, EV_TX);
 872
 873         if (EFX_QWORD_FIELD(*eqp, FSF_AZ_TX_EV_COMP) != 0 &&
 874             EFX_QWORD_FIELD(*eqp, FSF_AZ_TX_EV_PKT_ERR) == 0 &&
 875             EFX_QWORD_FIELD(*eqp, FSF_AZ_TX_EV_PKT_TOO_BIG) == 0 &&
 876             EFX_QWORD_FIELD(*eqp, FSF_AZ_TX_EV_WQ_FF_FULL) == 0) {
 877
 878                 id = EFX_QWORD_FIELD(*eqp, FSF_AZ_TX_EV_DESC_PTR);
 879                 label = EFX_QWORD_FIELD(*eqp, FSF_AZ_TX_EV_Q_LABEL);
 880
 881                 EFSYS_PROBE2(tx_complete, uint32_t, label, uint32_t, id);
 882
 883                 EFSYS_ASSERT(eecp->eec_tx != NULL);
 884                 should_abort = eecp->eec_tx(arg, label, id);
 885
 886                 return (should_abort);
 887         }
 888
 889         if (EFX_QWORD_FIELD(*eqp, FSF_AZ_TX_EV_COMP) != 0)
 890                 EFSYS_PROBE3(bad_event, unsigned int, eep->ee_index,
 891                             uint32_t, EFX_QWORD_FIELD(*eqp, EFX_DWORD_1),
 892                             uint32_t, EFX_QWORD_FIELD(*eqp, EFX_DWORD_0));
 893
 894         if (EFX_QWORD_FIELD(*eqp, FSF_AZ_TX_EV_PKT_ERR) != 0)
 895                 EFX_EV_QSTAT_INCR(eep, EV_TX_PKT_ERR);
 896
 897         if (EFX_QWORD_FIELD(*eqp, FSF_AZ_TX_EV_PKT_TOO_BIG) != 0)
 898                 EFX_EV_QSTAT_INCR(eep, EV_TX_PKT_TOO_BIG);
 899
 900         if (EFX_QWORD_FIELD(*eqp, FSF_AZ_TX_EV_WQ_FF_FULL) != 0)
 901                 EFX_EV_QSTAT_INCR(eep, EV_TX_WQ_FF_FULL);
 902
 903         EFX_EV_QSTAT_INCR(eep, EV_TX_UNEXPECTED);
 904         return (B_FALSE);
 905 }
 906
 907 static  __checkReturn   boolean_t
 908 siena_ev_global(
 909         __in            efx_evq_t *eep,
 910         __in            efx_qword_t *eqp,
 911         __in            const efx_ev_callbacks_t *eecp,
 912         __in_opt        void *arg)
 913 {
 914         _NOTE(ARGUNUSED(eqp, eecp, arg))
 915
 916         EFX_EV_QSTAT_INCR(eep, EV_GLOBAL);
 917
 918         return (B_FALSE);
 919 }
 920
 921 static  __checkReturn   boolean_t
 922 siena_ev_driver(
 923         __in            efx_evq_t *eep,
 924         __in            efx_qword_t *eqp,
 925         __in            const efx_ev_callbacks_t *eecp,
 926         __in_opt        void *arg)
 927 {
 928         boolean_t should_abort;
 929
 930         EFX_EV_QSTAT_INCR(eep, EV_DRIVER);
 931         should_abort = B_FALSE;
 932
 933         switch (EFX_QWORD_FIELD(*eqp, FSF_AZ_DRIVER_EV_SUBCODE)) {
 934         case FSE_AZ_TX_DESCQ_FLS_DONE_EV: {
 935                 uint32_t txq_index;
 936
 937                 EFX_EV_QSTAT_INCR(eep, EV_DRIVER_TX_DESCQ_FLS_DONE);
 938
 939                 txq_index = EFX_QWORD_FIELD(*eqp, FSF_AZ_DRIVER_EV_SUBDATA);
 940
 941                 EFSYS_PROBE1(tx_descq_fls_done, uint32_t, txq_index);
 942
 943                 EFSYS_ASSERT(eecp->eec_txq_flush_done != NULL);
 944                 should_abort = eecp->eec_txq_flush_done(arg, txq_index);
 945
 946                 break;
 947         }
 948         case FSE_AZ_RX_DESCQ_FLS_DONE_EV: {
 949                 uint32_t rxq_index;
 950                 uint32_t failed;
 951
 952                 rxq_index = EFX_QWORD_FIELD(*eqp, FSF_AZ_DRIVER_EV_RX_DESCQ_ID);
 953                 failed = EFX_QWORD_FIELD(*eqp, FSF_AZ_DRIVER_EV_RX_FLUSH_FAIL);
 954
 955                 EFSYS_ASSERT(eecp->eec_rxq_flush_done != NULL);
 956                 EFSYS_ASSERT(eecp->eec_rxq_flush_failed != NULL);
 957
 958                 if (failed) {
 959                         EFX_EV_QSTAT_INCR(eep, EV_DRIVER_RX_DESCQ_FLS_FAILED);
 960
 961                         EFSYS_PROBE1(rx_descq_fls_failed, uint32_t, rxq_index);
 962
 963                         should_abort = eecp->eec_rxq_flush_failed(arg,
 964                                                                     rxq_index);
 965                 } else {
 966                         EFX_EV_QSTAT_INCR(eep, EV_DRIVER_RX_DESCQ_FLS_DONE);
 967
 968                         EFSYS_PROBE1(rx_descq_fls_done, uint32_t, rxq_index);
 969
 970                         should_abort = eecp->eec_rxq_flush_done(arg, rxq_index);
 971                 }
 972
 973                 break;
 974         }
 975         case FSE_AZ_EVQ_INIT_DONE_EV:
 976                 EFSYS_ASSERT(eecp->eec_initialized != NULL);
 977                 should_abort = eecp->eec_initialized(arg);
 978
 979                 break;
 980
 981         case FSE_AZ_EVQ_NOT_EN_EV:
 982                 EFSYS_PROBE(evq_not_en);
 983                 break;
 984
 985         case FSE_AZ_SRM_UPD_DONE_EV: {
 986                 uint32_t code;
 987
 988                 EFX_EV_QSTAT_INCR(eep, EV_DRIVER_SRM_UPD_DONE);
 989
 990                 code = EFX_QWORD_FIELD(*eqp, FSF_AZ_DRIVER_EV_SUBDATA);
 991
 992                 EFSYS_ASSERT(eecp->eec_sram != NULL);
 993                 should_abort = eecp->eec_sram(arg, code);
 994
 995                 break;
 996         }
 997         case FSE_AZ_WAKE_UP_EV: {
 998                 uint32_t id;
 999
1000                 id = EFX_QWORD_FIELD(*eqp, FSF_AZ_DRIVER_EV_SUBDATA);
1001
1002                 EFSYS_ASSERT(eecp->eec_wake_up != NULL);
1003                 should_abort = eecp->eec_wake_up(arg, id);
1004
1005                 break;
1006         }
1007         case FSE_AZ_TX_PKT_NON_TCP_UDP:
1008                 EFSYS_PROBE(tx_pkt_non_tcp_udp);
1009                 break;
1010
1011         case FSE_AZ_TIMER_EV: {
1012                 uint32_t id;
1013
1014                 id = EFX_QWORD_FIELD(*eqp, FSF_AZ_DRIVER_EV_SUBDATA);
1015
1016                 EFSYS_ASSERT(eecp->eec_timer != NULL);
1017                 should_abort = eecp->eec_timer(arg, id);
1018
1019                 break;
1020         }
1021         case FSE_AZ_RX_DSC_ERROR_EV:
1022                 EFX_EV_QSTAT_INCR(eep, EV_DRIVER_RX_DSC_ERROR);
1023
1024                 EFSYS_PROBE(rx_dsc_error);
1025
1026                 EFSYS_ASSERT(eecp->eec_exception != NULL);
1027                 should_abort = eecp->eec_exception(arg,
1028                         EFX_EXCEPTION_RX_DSC_ERROR, 0);
1029
1030                 break;
1031
1032         case FSE_AZ_TX_DSC_ERROR_EV:
1033                 EFX_EV_QSTAT_INCR(eep, EV_DRIVER_TX_DSC_ERROR);
1034
1035                 EFSYS_PROBE(tx_dsc_error);
1036
1037                 EFSYS_ASSERT(eecp->eec_exception != NULL);
1038                 should_abort = eecp->eec_exception(arg,
1039                         EFX_EXCEPTION_TX_DSC_ERROR, 0);
1040
1041                 break;
1042
1043         default:
1044                 break;
1045         }
1046
1047         return (should_abort);
1048 }
1049
1050 static  __checkReturn   boolean_t
1051 siena_ev_drv_gen(
1052         __in            efx_evq_t *eep,
1053         __in            efx_qword_t *eqp,
1054         __in            const efx_ev_callbacks_t *eecp,
1055         __in_opt        void *arg)
1056 {
1057         uint32_t data;
1058         boolean_t should_abort;
1059
1060         EFX_EV_QSTAT_INCR(eep, EV_DRV_GEN);
1061
1062         data = EFX_QWORD_FIELD(*eqp, FSF_AZ_EV_DATA_DW0);
1063         if (data >= ((uint32_t)1 << 16)) {
1064                 EFSYS_PROBE3(bad_event, unsigned int, eep->ee_index,
1065                             uint32_t, EFX_QWORD_FIELD(*eqp, EFX_DWORD_1),
1066                             uint32_t, EFX_QWORD_FIELD(*eqp, EFX_DWORD_0));
1067                 return (B_TRUE);
1068         }
1069
1070         EFSYS_ASSERT(eecp->eec_software != NULL);
1071         should_abort = eecp->eec_software(arg, (uint16_t)data);
1072
1073         return (should_abort);
1074 }
1075
1076 #if EFSYS_OPT_MCDI
1077
1078 static  __checkReturn   boolean_t
1079 siena_ev_mcdi(
1080         __in            efx_evq_t *eep,
1081         __in            efx_qword_t *eqp,
1082         __in            const efx_ev_callbacks_t *eecp,
1083         __in_opt        void *arg)
1084 {
1085         efx_nic_t *enp = eep->ee_enp;
1086         unsigned int code;
1087         boolean_t should_abort = B_FALSE;
1088
1089         EFSYS_ASSERT3U(enp->en_family, ==, EFX_FAMILY_SIENA);
1090
1091         if (enp->en_family != EFX_FAMILY_SIENA)
1092                 goto out;
1093
1094         EFSYS_ASSERT(eecp->eec_link_change != NULL);
1095         EFSYS_ASSERT(eecp->eec_exception != NULL);
1096 #if EFSYS_OPT_MON_STATS
1097         EFSYS_ASSERT(eecp->eec_monitor != NULL);
1098 #endif
1099
1100         EFX_EV_QSTAT_INCR(eep, EV_MCDI_RESPONSE);
1101
1102         code = EFX_QWORD_FIELD(*eqp, MCDI_EVENT_CODE);
1103         switch (code) {
1104         case MCDI_EVENT_CODE_BADSSERT:
1105                 efx_mcdi_ev_death(enp, EINTR);
1106                 break;
1107
1108         case MCDI_EVENT_CODE_CMDDONE:
1109                 efx_mcdi_ev_cpl(enp,
1110                     MCDI_EV_FIELD(eqp, CMDDONE_SEQ),
1111                     MCDI_EV_FIELD(eqp, CMDDONE_DATALEN),
1112                     MCDI_EV_FIELD(eqp, CMDDONE_ERRNO));
1113                 break;
1114
1115         case MCDI_EVENT_CODE_LINKCHANGE: {
1116                 efx_link_mode_t link_mode;
1117
1118                 siena_phy_link_ev(enp, eqp, &link_mode);
1119                 should_abort = eecp->eec_link_change(arg, link_mode);
1120                 break;
1121         }
1122         case MCDI_EVENT_CODE_SENSOREVT: {
1123 #if EFSYS_OPT_MON_STATS
1124                 efx_mon_stat_t id;
1125                 efx_mon_stat_value_t value;
1126                 efx_rc_t rc;
1127
1128                 if ((rc = mcdi_mon_ev(enp, eqp, &id, &value)) == 0)
1129                         should_abort = eecp->eec_monitor(arg, id, value);
1130                 else if (rc == ENOTSUP) {
1131                         should_abort = eecp->eec_exception(arg,
1132                                 EFX_EXCEPTION_UNKNOWN_SENSOREVT,
1133                                 MCDI_EV_FIELD(eqp, DATA));
1134                 } else
1135                         EFSYS_ASSERT(rc == ENODEV);     /* Wrong port */
1136 #else
1137                 should_abort = B_FALSE;
1138 #endif
1139                 break;
1140         }
1141         case MCDI_EVENT_CODE_SCHEDERR:
1142                 /* Informational only */
1143                 break;
1144
1145         case MCDI_EVENT_CODE_REBOOT:
1146                 efx_mcdi_ev_death(enp, EIO);
1147                 break;
1148
1149         case MCDI_EVENT_CODE_MAC_STATS_DMA:
1150 #if EFSYS_OPT_MAC_STATS
1151                 if (eecp->eec_mac_stats != NULL) {
1152                         eecp->eec_mac_stats(arg,
1153                             MCDI_EV_FIELD(eqp, MAC_STATS_DMA_GENERATION));
1154                 }
1155 #endif
1156                 break;
1157
1158         case MCDI_EVENT_CODE_FWALERT: {
1159                 uint32_t reason = MCDI_EV_FIELD(eqp, FWALERT_REASON);
1160
1161                 if (reason == MCDI_EVENT_FWALERT_REASON_SRAM_ACCESS)
1162                         should_abort = eecp->eec_exception(arg,
1163                                 EFX_EXCEPTION_FWALERT_SRAM,
1164                                 MCDI_EV_FIELD(eqp, FWALERT_DATA));
1165                 else
1166                         should_abort = eecp->eec_exception(arg,
1167                                 EFX_EXCEPTION_UNKNOWN_FWALERT,
1168                                 MCDI_EV_FIELD(eqp, DATA));
1169                 break;
1170         }
1171
1172         default:
1173                 EFSYS_PROBE1(mc_pcol_error, int, code);
1174                 break;
1175         }
1176
1177 out:
1178         return (should_abort);
1179 }
1180
1181 #endif  /* EFSYS_OPT_MCDI */
1182
1183 static  __checkReturn   efx_rc_t
1184 siena_ev_qprime(
1185         __in            efx_evq_t *eep,
1186         __in            unsigned int count)
1187 {
1188         efx_nic_t *enp = eep->ee_enp;
1189         uint32_t rptr;
1190         efx_dword_t dword;
1191
1192         rptr = count & eep->ee_mask;
1193
1194         EFX_POPULATE_DWORD_1(dword, FRF_AZ_EVQ_RPTR, rptr);
1195
1196         EFX_BAR_TBL_WRITED(enp, FR_AZ_EVQ_RPTR_REG, eep->ee_index,
1197                             &dword, B_FALSE);
1198
1199         return (0);
1200 }
1201
1202 static          void
1203 siena_ev_qpost(
1204         __in    efx_evq_t *eep,
1205         __in    uint16_t data)
1206 {
1207         efx_nic_t *enp = eep->ee_enp;
1208         efx_qword_t ev;
1209         efx_oword_t oword;
1210
1211         EFX_POPULATE_QWORD_2(ev, FSF_AZ_EV_CODE, FSE_AZ_EV_CODE_DRV_GEN_EV,
1212             FSF_AZ_EV_DATA_DW0, (uint32_t)data);
1213
1214         EFX_POPULATE_OWORD_3(oword, FRF_AZ_DRV_EV_QID, eep->ee_index,
1215             EFX_DWORD_0, EFX_QWORD_FIELD(ev, EFX_DWORD_0),
1216             EFX_DWORD_1, EFX_QWORD_FIELD(ev, EFX_DWORD_1));
1217
1218         EFX_BAR_WRITEO(enp, FR_AZ_DRV_EV_REG, &oword);
1219 }
1220
1221 static  __checkReturn   efx_rc_t
1222 siena_ev_qmoderate(
1223         __in            efx_evq_t *eep,
1224         __in            unsigned int us)
1225 {
1226         efx_nic_t *enp = eep->ee_enp;
1227         efx_nic_cfg_t *encp = &(enp->en_nic_cfg);
1228         unsigned int locked;
1229         efx_dword_t dword;
1230         efx_rc_t rc;
1231
1232         if (us > encp->enc_evq_timer_max_us) {
1233                 rc = EINVAL;
1234                 goto fail1;
1235         }
1236
1237         /* If the value is zero then disable the timer */
1238         if (us == 0) {
1239                 EFX_POPULATE_DWORD_2(dword,
1240                     FRF_CZ_TC_TIMER_MODE, FFE_CZ_TIMER_MODE_DIS,
1241                     FRF_CZ_TC_TIMER_VAL, 0);
1242         } else {
1243                 unsigned int ticks;
1244
1245                 if ((rc = efx_ev_usecs_to_ticks(enp, us, &ticks)) != 0)
1246                         goto fail2;
1247
1248                 EFSYS_ASSERT(ticks > 0);
1249                 EFX_POPULATE_DWORD_2(dword,
1250                     FRF_CZ_TC_TIMER_MODE, FFE_CZ_TIMER_MODE_INT_HLDOFF,
1251                     FRF_CZ_TC_TIMER_VAL, ticks - 1);
1252         }
1253
1254         locked = (eep->ee_index == 0) ? 1 : 0;
1255
1256         EFX_BAR_TBL_WRITED(enp, FR_BZ_TIMER_COMMAND_REGP0,
1257             eep->ee_index, &dword, locked);
1258
1259         return (0);
1260
1261 fail2:
1262         EFSYS_PROBE(fail2);
1263 fail1:
1264         EFSYS_PROBE1(fail1, efx_rc_t, rc);
1265
1266         return (rc);
1267 }
1268
1269 static  __checkReturn   efx_rc_t
1270 siena_ev_qcreate(
1271         __in            efx_nic_t *enp,
1272         __in            unsigned int index,
1273         __in            efsys_mem_t *esmp,
1274         __in            size_t ndescs,
1275         __in            uint32_t id,
1276         __in            uint32_t us,
1277         __in            uint32_t flags,
1278         __in            efx_evq_t *eep)
1279 {
1280         efx_nic_cfg_t *encp = &(enp->en_nic_cfg);
1281         uint32_t size;
1282         efx_oword_t oword;
1283         efx_rc_t rc;
1284         boolean_t notify_mode;
1285
1286         _NOTE(ARGUNUSED(esmp))
1287
1288         EFSYS_ASSERT(ISP2(encp->enc_evq_max_nevs));
1289         EFSYS_ASSERT(ISP2(encp->enc_evq_min_nevs));
1290
1291         if (!ISP2(ndescs) ||
1292             (ndescs < encp->enc_evq_min_nevs) ||
1293             (ndescs > encp->enc_evq_max_nevs)) {
1294                 rc = EINVAL;
1295                 goto fail1;
1296         }
1297         if (index >= encp->enc_evq_limit) {
1298                 rc = EINVAL;
1299                 goto fail2;
1300         }
1301 #if EFSYS_OPT_RX_SCALE
1302         if (enp->en_intr.ei_type == EFX_INTR_LINE &&
1303             index >= EFX_MAXRSS_LEGACY) {
1304                 rc = EINVAL;
1305                 goto fail3;
1306         }
1307 #endif
1308         for (size = 0;
1309             (1U << size) <= encp->enc_evq_max_nevs / encp->enc_evq_min_nevs;
1310             size++)
1311                 if ((1U << size) == (uint32_t)ndescs / encp->enc_evq_min_nevs)
1312                         break;
1313         if (id + (1 << size) >= encp->enc_buftbl_limit) {
1314                 rc = EINVAL;
1315                 goto fail4;
1316         }
1317
1318         /* Set up the handler table */
1319         eep->ee_rx      = siena_ev_rx;
1320         eep->ee_tx      = siena_ev_tx;
1321         eep->ee_driver  = siena_ev_driver;
1322         eep->ee_global  = siena_ev_global;
1323         eep->ee_drv_gen = siena_ev_drv_gen;
1324 #if EFSYS_OPT_MCDI
1325         eep->ee_mcdi    = siena_ev_mcdi;
1326 #endif  /* EFSYS_OPT_MCDI */
1327
1328         notify_mode = ((flags & EFX_EVQ_FLAGS_NOTIFY_MASK) !=
1329             EFX_EVQ_FLAGS_NOTIFY_INTERRUPT);
1330
1331         /* Set up the new event queue */
1332         EFX_POPULATE_OWORD_3(oword, FRF_CZ_TIMER_Q_EN, 1,
1333             FRF_CZ_HOST_NOTIFY_MODE, notify_mode,
1334             FRF_CZ_TIMER_MODE, FFE_CZ_TIMER_MODE_DIS);
1335         EFX_BAR_TBL_WRITEO(enp, FR_AZ_TIMER_TBL, index, &oword, B_TRUE);
1336
1337         EFX_POPULATE_OWORD_3(oword, FRF_AZ_EVQ_EN, 1, FRF_AZ_EVQ_SIZE, size,
1338             FRF_AZ_EVQ_BUF_BASE_ID, id);
1339
1340         EFX_BAR_TBL_WRITEO(enp, FR_AZ_EVQ_PTR_TBL, index, &oword, B_TRUE);
1341
1342         /* Set initial interrupt moderation */
1343         siena_ev_qmoderate(eep, us);
1344
1345         return (0);
1346
1347 fail4:
1348         EFSYS_PROBE(fail4);
1349 #if EFSYS_OPT_RX_SCALE
1350 fail3:
1351         EFSYS_PROBE(fail3);
1352 #endif
1353 fail2:
1354         EFSYS_PROBE(fail2);
1355 fail1:
1356         EFSYS_PROBE1(fail1, efx_rc_t, rc);
1357
1358         return (rc);
1359 }
1360
1361 #endif /* EFSYS_OPT_SIENA */
1362
1363 #if EFSYS_OPT_QSTATS
1364 #if EFSYS_OPT_NAMES
1365 /* START MKCONFIG GENERATED EfxEventQueueStatNamesBlock c0f3bc5083b40532 */
1366 static const char * const __efx_ev_qstat_name[] = {
1367         "all",
1368         "rx",
1369         "rx_ok",
1370         "rx_frm_trunc",
1371         "rx_tobe_disc",
1372         "rx_pause_frm_err",
1373         "rx_buf_owner_id_err",
1374         "rx_ipv4_hdr_chksum_err",
1375         "rx_tcp_udp_chksum_err",
1376         "rx_eth_crc_err",
1377         "rx_ip_frag_err",
1378         "rx_mcast_pkt",
1379         "rx_mcast_hash_match",
1380         "rx_tcp_ipv4",
1381         "rx_tcp_ipv6",
1382         "rx_udp_ipv4",
1383         "rx_udp_ipv6",
1384         "rx_other_ipv4",
1385         "rx_other_ipv6",
1386         "rx_non_ip",
1387         "rx_batch",
1388         "tx",
1389         "tx_wq_ff_full",
1390         "tx_pkt_err",
1391         "tx_pkt_too_big",
1392         "tx_unexpected",
1393         "global",
1394         "global_mnt",
1395         "driver",
1396         "driver_srm_upd_done",
1397         "driver_tx_descq_fls_done",
1398         "driver_rx_descq_fls_done",
1399         "driver_rx_descq_fls_failed",
1400         "driver_rx_dsc_error",
1401         "driver_tx_dsc_error",
1402         "drv_gen",
1403         "mcdi_response",
1404 };
1405 /* END MKCONFIG GENERATED EfxEventQueueStatNamesBlock */
1406
1407                 const char *
1408 efx_ev_qstat_name(
1409         __in    efx_nic_t *enp,
1410         __in    unsigned int id)
1411 {
1412         _NOTE(ARGUNUSED(enp))
1413
1414         EFSYS_ASSERT3U(enp->en_magic, ==, EFX_NIC_MAGIC);
1415         EFSYS_ASSERT3U(id, <, EV_NQSTATS);
1416
1417         return (__efx_ev_qstat_name[id]);
1418 }
1419 #endif  /* EFSYS_OPT_NAMES */
1420 #endif  /* EFSYS_OPT_QSTATS */
1421
1422 #if EFSYS_OPT_SIENA
1423
1424 #if EFSYS_OPT_QSTATS
1425 static                                  void
1426 siena_ev_qstats_update(
1427         __in                            efx_evq_t *eep,
1428         __inout_ecount(EV_NQSTATS)      efsys_stat_t *stat)
1429 {
1430         unsigned int id;
1431
1432         for (id = 0; id < EV_NQSTATS; id++) {
1433                 efsys_stat_t *essp = &stat[id];
1434
1435                 EFSYS_STAT_INCR(essp, eep->ee_stat[id]);
1436                 eep->ee_stat[id] = 0;
1437         }
1438 }
1439 #endif  /* EFSYS_OPT_QSTATS */
1440
1441 static          void
1442 siena_ev_qdestroy(
1443         __in    efx_evq_t *eep)
1444 {
1445         efx_nic_t *enp = eep->ee_enp;
1446         efx_oword_t oword;
1447
1448         /* Purge event queue */
1449         EFX_ZERO_OWORD(oword);
1450
1451         EFX_BAR_TBL_WRITEO(enp, FR_AZ_EVQ_PTR_TBL,
1452             eep->ee_index, &oword, B_TRUE);
1453
1454         EFX_ZERO_OWORD(oword);
1455         EFX_BAR_TBL_WRITEO(enp, FR_AZ_TIMER_TBL, eep->ee_index, &oword, B_TRUE);
1456 }
1457
1458 static          void
1459 siena_ev_fini(
1460         __in    efx_nic_t *enp)
1461 {
1462         _NOTE(ARGUNUSED(enp))
1463 }
1464
1465 #endif /* EFSYS_OPT_SIENA */