drivers/net/sfc/base/efx_nvram.c

   1 /* SPDX-License-Identifier: BSD-3-Clause
   2  *
   3  * Copyright (c) 2009-2018 Solarflare Communications Inc.
   4  * All rights reserved.
   5  */
   6
   7 #include "efx.h"
   8 #include "efx_impl.h"
   9
  10 #if EFSYS_OPT_NVRAM
  11
  12 #if EFSYS_OPT_SIENA
  13
  14 static const efx_nvram_ops_t    __efx_nvram_siena_ops = {
  15 #if EFSYS_OPT_DIAG
  16         siena_nvram_test,               /* envo_test */
  17 #endif  /* EFSYS_OPT_DIAG */
  18         siena_nvram_type_to_partn,      /* envo_type_to_partn */
  19         siena_nvram_partn_size,         /* envo_partn_size */
  20         siena_nvram_partn_rw_start,     /* envo_partn_rw_start */
  21         siena_nvram_partn_read,         /* envo_partn_read */
  22         siena_nvram_partn_read,         /* envo_partn_read_backup */
  23         siena_nvram_partn_erase,        /* envo_partn_erase */
  24         siena_nvram_partn_write,        /* envo_partn_write */
  25         siena_nvram_partn_rw_finish,    /* envo_partn_rw_finish */
  26         siena_nvram_partn_get_version,  /* envo_partn_get_version */
  27         siena_nvram_partn_set_version,  /* envo_partn_set_version */
  28         NULL,                           /* envo_partn_validate */
  29 };
  30
  31 #endif  /* EFSYS_OPT_SIENA */
  32
  33 #if EFSYS_OPT_HUNTINGTON || EFSYS_OPT_MEDFORD || EFSYS_OPT_MEDFORD2
  34
  35 static const efx_nvram_ops_t    __efx_nvram_ef10_ops = {
  36 #if EFSYS_OPT_DIAG
  37         ef10_nvram_test,                /* envo_test */
  38 #endif  /* EFSYS_OPT_DIAG */
  39         ef10_nvram_type_to_partn,       /* envo_type_to_partn */
  40         ef10_nvram_partn_size,          /* envo_partn_size */
  41         ef10_nvram_partn_rw_start,      /* envo_partn_rw_start */
  42         ef10_nvram_partn_read,          /* envo_partn_read */
  43         ef10_nvram_partn_read_backup,   /* envo_partn_read_backup */
  44         ef10_nvram_partn_erase,         /* envo_partn_erase */
  45         ef10_nvram_partn_write,         /* envo_partn_write */
  46         ef10_nvram_partn_rw_finish,     /* envo_partn_rw_finish */
  47         ef10_nvram_partn_get_version,   /* envo_partn_get_version */
  48         ef10_nvram_partn_set_version,   /* envo_partn_set_version */
  49         ef10_nvram_buffer_validate,     /* envo_buffer_validate */
  50 };
  51
  52 #endif  /* EFSYS_OPT_HUNTINGTON || EFSYS_OPT_MEDFORD || EFSYS_OPT_MEDFORD2 */
  53
  54         __checkReturn   efx_rc_t
  55 efx_nvram_init(
  56         __in            efx_nic_t *enp)
  57 {
  58         const efx_nvram_ops_t *envop;
  59         efx_rc_t rc;
  60
  61         EFSYS_ASSERT3U(enp->en_magic, ==, EFX_NIC_MAGIC);
  62         EFSYS_ASSERT3U(enp->en_mod_flags, &, EFX_MOD_PROBE);
  63         EFSYS_ASSERT(!(enp->en_mod_flags & EFX_MOD_NVRAM));
  64
  65         switch (enp->en_family) {
  66 #if EFSYS_OPT_SIENA
  67         case EFX_FAMILY_SIENA:
  68                 envop = &__efx_nvram_siena_ops;
  69                 break;
  70 #endif  /* EFSYS_OPT_SIENA */
  71
  72 #if EFSYS_OPT_HUNTINGTON
  73         case EFX_FAMILY_HUNTINGTON:
  74                 envop = &__efx_nvram_ef10_ops;
  75                 break;
  76 #endif  /* EFSYS_OPT_HUNTINGTON */
  77
  78 #if EFSYS_OPT_MEDFORD
  79         case EFX_FAMILY_MEDFORD:
  80                 envop = &__efx_nvram_ef10_ops;
  81                 break;
  82 #endif  /* EFSYS_OPT_MEDFORD */
  83
  84 #if EFSYS_OPT_MEDFORD2
  85         case EFX_FAMILY_MEDFORD2:
  86                 envop = &__efx_nvram_ef10_ops;
  87                 break;
  88 #endif  /* EFSYS_OPT_MEDFORD2 */
  89
  90         default:
  91                 EFSYS_ASSERT(0);
  92                 rc = ENOTSUP;
  93                 goto fail1;
  94         }
  95
  96         enp->en_envop = envop;
  97         enp->en_mod_flags |= EFX_MOD_NVRAM;
  98
  99         enp->en_nvram_partn_locked = EFX_NVRAM_PARTN_INVALID;
 100
 101         return (0);
 102
 103 fail1:
 104         EFSYS_PROBE1(fail1, efx_rc_t, rc);
 105
 106         return (rc);
 107 }
 108
 109 #if EFSYS_OPT_DIAG
 110
 111         __checkReturn           efx_rc_t
 112 efx_nvram_test(
 113         __in                    efx_nic_t *enp)
 114 {
 115         const efx_nvram_ops_t *envop = enp->en_envop;
 116         efx_rc_t rc;
 117
 118         EFSYS_ASSERT3U(enp->en_magic, ==, EFX_NIC_MAGIC);
 119         EFSYS_ASSERT3U(enp->en_mod_flags, &, EFX_MOD_NVRAM);
 120
 121         if ((rc = envop->envo_test(enp)) != 0)
 122                 goto fail1;
 123
 124         return (0);
 125
 126 fail1:
 127         EFSYS_PROBE1(fail1, efx_rc_t, rc);
 128
 129         return (rc);
 130 }
 131
 132 #endif  /* EFSYS_OPT_DIAG */
 133
 134         __checkReturn           efx_rc_t
 135 efx_nvram_size(
 136         __in                    efx_nic_t *enp,
 137         __in                    efx_nvram_type_t type,
 138         __out                   size_t *sizep)
 139 {
 140         const efx_nvram_ops_t *envop = enp->en_envop;
 141         uint32_t partn;
 142         efx_rc_t rc;
 143
 144         EFSYS_ASSERT3U(enp->en_magic, ==, EFX_NIC_MAGIC);
 145         EFSYS_ASSERT3U(enp->en_mod_flags, &, EFX_MOD_NVRAM);
 146
 147         if ((rc = envop->envo_type_to_partn(enp, type, &partn)) != 0)
 148                 goto fail1;
 149
 150         if ((rc = envop->envo_partn_size(enp, partn, sizep)) != 0)
 151                 goto fail2;
 152
 153         return (0);
 154
 155 fail2:
 156         EFSYS_PROBE(fail2);
 157 fail1:
 158         EFSYS_PROBE1(fail1, efx_rc_t, rc);
 159         *sizep = 0;
 160
 161         return (rc);
 162 }
 163
 164         __checkReturn           efx_rc_t
 165 efx_nvram_get_version(
 166         __in                    efx_nic_t *enp,
 167         __in                    efx_nvram_type_t type,
 168         __out                   uint32_t *subtypep,
 169         __out_ecount(4)         uint16_t version[4])
 170 {
 171         const efx_nvram_ops_t *envop = enp->en_envop;
 172         uint32_t partn;
 173         efx_rc_t rc;
 174
 175         EFSYS_ASSERT3U(enp->en_magic, ==, EFX_NIC_MAGIC);
 176         EFSYS_ASSERT3U(enp->en_mod_flags, &, EFX_MOD_PROBE);
 177         EFSYS_ASSERT3U(enp->en_mod_flags, &, EFX_MOD_NVRAM);
 178
 179         if ((rc = envop->envo_type_to_partn(enp, type, &partn)) != 0)
 180                 goto fail1;
 181
 182         if ((rc = envop->envo_partn_get_version(enp, partn,
 183                     subtypep, version)) != 0)
 184                 goto fail2;
 185
 186         return (0);
 187
 188 fail2:
 189         EFSYS_PROBE(fail2);
 190 fail1:
 191         EFSYS_PROBE1(fail1, efx_rc_t, rc);
 192
 193         return (rc);
 194 }
 195
 196         __checkReturn           efx_rc_t
 197 efx_nvram_rw_start(
 198         __in                    efx_nic_t *enp,
 199         __in                    efx_nvram_type_t type,
 200         __out_opt               size_t *chunk_sizep)
 201 {
 202         const efx_nvram_ops_t *envop = enp->en_envop;
 203         uint32_t partn;
 204         efx_rc_t rc;
 205
 206         EFSYS_ASSERT3U(enp->en_magic, ==, EFX_NIC_MAGIC);
 207         EFSYS_ASSERT3U(enp->en_mod_flags, &, EFX_MOD_NVRAM);
 208
 209         if ((rc = envop->envo_type_to_partn(enp, type, &partn)) != 0)
 210                 goto fail1;
 211
 212         EFSYS_ASSERT3U(enp->en_nvram_partn_locked, ==, EFX_NVRAM_PARTN_INVALID);
 213
 214         if ((rc = envop->envo_partn_rw_start(enp, partn, chunk_sizep)) != 0)
 215                 goto fail2;
 216
 217         enp->en_nvram_partn_locked = partn;
 218
 219         return (0);
 220
 221 fail2:
 222         EFSYS_PROBE(fail2);
 223 fail1:
 224         EFSYS_PROBE1(fail1, efx_rc_t, rc);
 225
 226         return (rc);
 227 }
 228
 229         __checkReturn           efx_rc_t
 230 efx_nvram_read_chunk(
 231         __in                    efx_nic_t *enp,
 232         __in                    efx_nvram_type_t type,
 233         __in                    unsigned int offset,
 234         __out_bcount(size)      caddr_t data,
 235         __in                    size_t size)
 236 {
 237         const efx_nvram_ops_t *envop = enp->en_envop;
 238         uint32_t partn;
 239         efx_rc_t rc;
 240
 241         EFSYS_ASSERT3U(enp->en_magic, ==, EFX_NIC_MAGIC);
 242         EFSYS_ASSERT3U(enp->en_mod_flags, &, EFX_MOD_NVRAM);
 243
 244         if ((rc = envop->envo_type_to_partn(enp, type, &partn)) != 0)
 245                 goto fail1;
 246
 247         EFSYS_ASSERT3U(enp->en_nvram_partn_locked, ==, partn);
 248
 249         if ((rc = envop->envo_partn_read(enp, partn, offset, data, size)) != 0)
 250                 goto fail2;
 251
 252         return (0);
 253
 254 fail2:
 255         EFSYS_PROBE(fail2);
 256 fail1:
 257         EFSYS_PROBE1(fail1, efx_rc_t, rc);
 258
 259         return (rc);
 260 }
 261
 262 /*
 263  * Read from the backup (writeable) store of an A/B partition.
 264  * For non A/B partitions, there is only a single store, and so this
 265  * function has the same behaviour as efx_nvram_read_chunk().
 266  */
 267         __checkReturn           efx_rc_t
 268 efx_nvram_read_backup(
 269         __in                    efx_nic_t *enp,
 270         __in                    efx_nvram_type_t type,
 271         __in                    unsigned int offset,
 272         __out_bcount(size)      caddr_t data,
 273         __in                    size_t size)
 274 {
 275         const efx_nvram_ops_t *envop = enp->en_envop;
 276         uint32_t partn;
 277         efx_rc_t rc;
 278
 279         EFSYS_ASSERT3U(enp->en_magic, ==, EFX_NIC_MAGIC);
 280         EFSYS_ASSERT3U(enp->en_mod_flags, &, EFX_MOD_NVRAM);
 281
 282         if ((rc = envop->envo_type_to_partn(enp, type, &partn)) != 0)
 283                 goto fail1;
 284
 285         EFSYS_ASSERT3U(enp->en_nvram_partn_locked, ==, partn);
 286
 287         if ((rc = envop->envo_partn_read_backup(enp, partn, offset,
 288                     data, size)) != 0)
 289                 goto fail2;
 290
 291         return (0);
 292
 293 fail2:
 294         EFSYS_PROBE(fail2);
 295 fail1:
 296         EFSYS_PROBE1(fail1, efx_rc_t, rc);
 297
 298         return (rc);
 299 }
 300
 301         __checkReturn           efx_rc_t
 302 efx_nvram_erase(
 303         __in                    efx_nic_t *enp,
 304         __in                    efx_nvram_type_t type)
 305 {
 306         const efx_nvram_ops_t *envop = enp->en_envop;
 307         unsigned int offset = 0;
 308         size_t size = 0;
 309         uint32_t partn;
 310         efx_rc_t rc;
 311
 312         EFSYS_ASSERT3U(enp->en_magic, ==, EFX_NIC_MAGIC);
 313         EFSYS_ASSERT3U(enp->en_mod_flags, &, EFX_MOD_NVRAM);
 314
 315         if ((rc = envop->envo_type_to_partn(enp, type, &partn)) != 0)
 316                 goto fail1;
 317
 318         EFSYS_ASSERT3U(enp->en_nvram_partn_locked, ==, partn);
 319
 320         if ((rc = envop->envo_partn_size(enp, partn, &size)) != 0)
 321                 goto fail2;
 322
 323         if ((rc = envop->envo_partn_erase(enp, partn, offset, size)) != 0)
 324                 goto fail3;
 325
 326         return (0);
 327
 328 fail3:
 329         EFSYS_PROBE(fail3);
 330 fail2:
 331         EFSYS_PROBE(fail2);
 332 fail1:
 333         EFSYS_PROBE1(fail1, efx_rc_t, rc);
 334
 335         return (rc);
 336 }
 337
 338         __checkReturn           efx_rc_t
 339 efx_nvram_write_chunk(
 340         __in                    efx_nic_t *enp,
 341         __in                    efx_nvram_type_t type,
 342         __in                    unsigned int offset,
 343         __in_bcount(size)       caddr_t data,
 344         __in                    size_t size)
 345 {
 346         const efx_nvram_ops_t *envop = enp->en_envop;
 347         uint32_t partn;
 348         efx_rc_t rc;
 349
 350         EFSYS_ASSERT3U(enp->en_magic, ==, EFX_NIC_MAGIC);
 351         EFSYS_ASSERT3U(enp->en_mod_flags, &, EFX_MOD_NVRAM);
 352
 353         if ((rc = envop->envo_type_to_partn(enp, type, &partn)) != 0)
 354                 goto fail1;
 355
 356         EFSYS_ASSERT3U(enp->en_nvram_partn_locked, ==, partn);
 357
 358         if ((rc = envop->envo_partn_write(enp, partn, offset, data, size)) != 0)
 359                 goto fail2;
 360
 361         return (0);
 362
 363 fail2:
 364         EFSYS_PROBE(fail2);
 365 fail1:
 366         EFSYS_PROBE1(fail1, efx_rc_t, rc);
 367
 368         return (rc);
 369 }
 370
 371         __checkReturn           efx_rc_t
 372 efx_nvram_rw_finish(
 373         __in                    efx_nic_t *enp,
 374         __in                    efx_nvram_type_t type,
 375         __out_opt               uint32_t *verify_resultp)
 376 {
 377         const efx_nvram_ops_t *envop = enp->en_envop;
 378         uint32_t partn;
 379         uint32_t verify_result = 0;
 380         efx_rc_t rc;
 381
 382         EFSYS_ASSERT3U(enp->en_magic, ==, EFX_NIC_MAGIC);
 383         EFSYS_ASSERT3U(enp->en_mod_flags, &, EFX_MOD_NVRAM);
 384
 385         if ((rc = envop->envo_type_to_partn(enp, type, &partn)) != 0)
 386                 goto fail1;
 387
 388         EFSYS_ASSERT3U(enp->en_nvram_partn_locked, ==, partn);
 389
 390         if ((rc = envop->envo_partn_rw_finish(enp, partn, &verify_result)) != 0)
 391                 goto fail2;
 392
 393         enp->en_nvram_partn_locked = EFX_NVRAM_PARTN_INVALID;
 394
 395         if (verify_resultp != NULL)
 396                 *verify_resultp = verify_result;
 397
 398         return (0);
 399
 400 fail2:
 401         EFSYS_PROBE(fail2);
 402         enp->en_nvram_partn_locked = EFX_NVRAM_PARTN_INVALID;
 403
 404 fail1:
 405         EFSYS_PROBE1(fail1, efx_rc_t, rc);
 406
 407         /* Always report verification result */
 408         if (verify_resultp != NULL)
 409                 *verify_resultp = verify_result;
 410
 411         return (rc);
 412 }
 413
 414         __checkReturn           efx_rc_t
 415 efx_nvram_set_version(
 416         __in                    efx_nic_t *enp,
 417         __in                    efx_nvram_type_t type,
 418         __in_ecount(4)          uint16_t version[4])
 419 {
 420         const efx_nvram_ops_t *envop = enp->en_envop;
 421         uint32_t partn;
 422         efx_rc_t rc;
 423
 424         EFSYS_ASSERT3U(enp->en_magic, ==, EFX_NIC_MAGIC);
 425         EFSYS_ASSERT3U(enp->en_mod_flags, &, EFX_MOD_PROBE);
 426         EFSYS_ASSERT3U(enp->en_mod_flags, &, EFX_MOD_NVRAM);
 427
 428         if ((rc = envop->envo_type_to_partn(enp, type, &partn)) != 0)
 429                 goto fail1;
 430
 431         /*
 432          * The Siena implementation of envo_set_version() will attempt to
 433          * acquire the NVRAM_UPDATE lock for the DYNAMIC_CONFIG partition.
 434          * Therefore, you can't have already acquired the NVRAM_UPDATE lock.
 435          */
 436         EFSYS_ASSERT3U(enp->en_nvram_partn_locked, ==, EFX_NVRAM_PARTN_INVALID);
 437
 438         if ((rc = envop->envo_partn_set_version(enp, partn, version)) != 0)
 439                 goto fail2;
 440
 441         return (0);
 442
 443 fail2:
 444         EFSYS_PROBE(fail2);
 445 fail1:
 446         EFSYS_PROBE1(fail1, efx_rc_t, rc);
 447
 448         return (rc);
 449 }
 450
 451 /* Validate buffer contents (before writing to flash) */
 452         __checkReturn           efx_rc_t
 453 efx_nvram_validate(
 454         __in                    efx_nic_t *enp,
 455         __in                    efx_nvram_type_t type,
 456         __in_bcount(partn_size) caddr_t partn_data,
 457         __in                    size_t partn_size)
 458 {
 459         const efx_nvram_ops_t *envop = enp->en_envop;
 460         uint32_t partn;
 461         efx_rc_t rc;
 462
 463         EFSYS_ASSERT3U(enp->en_magic, ==, EFX_NIC_MAGIC);
 464         EFSYS_ASSERT3U(enp->en_mod_flags, &, EFX_MOD_PROBE);
 465         EFSYS_ASSERT3U(enp->en_mod_flags, &, EFX_MOD_NVRAM);
 466
 467         if ((rc = envop->envo_type_to_partn(enp, type, &partn)) != 0)
 468                 goto fail1;
 469
 470         if (envop->envo_buffer_validate != NULL) {
 471                 if ((rc = envop->envo_buffer_validate(enp, partn,
 472                             partn_data, partn_size)) != 0)
 473                         goto fail2;
 474         }
 475
 476         return (0);
 477
 478 fail2:
 479         EFSYS_PROBE(fail2);
 480 fail1:
 481         EFSYS_PROBE1(fail1, efx_rc_t, rc);
 482
 483         return (rc);
 484 }
 485
 486
 487 void
 488 efx_nvram_fini(
 489         __in            efx_nic_t *enp)
 490 {
 491         EFSYS_ASSERT3U(enp->en_magic, ==, EFX_NIC_MAGIC);
 492         EFSYS_ASSERT3U(enp->en_mod_flags, &, EFX_MOD_PROBE);
 493         EFSYS_ASSERT3U(enp->en_mod_flags, &, EFX_MOD_NVRAM);
 494
 495         EFSYS_ASSERT3U(enp->en_nvram_partn_locked, ==, EFX_NVRAM_PARTN_INVALID);
 496
 497         enp->en_envop = NULL;
 498         enp->en_mod_flags &= ~EFX_MOD_NVRAM;
 499 }
 500
 501 #endif  /* EFSYS_OPT_NVRAM */
 502
 503 #if EFSYS_OPT_NVRAM || EFSYS_OPT_VPD
 504
 505 /*
 506  * Internal MCDI request handling
 507  */
 508
 509         __checkReturn           efx_rc_t
 510 efx_mcdi_nvram_partitions(
 511         __in                    efx_nic_t *enp,
 512         __out_bcount(size)      caddr_t data,
 513         __in                    size_t size,
 514         __out                   unsigned int *npartnp)
 515 {
 516         efx_mcdi_req_t req;
 517         uint8_t payload[MAX(MC_CMD_NVRAM_PARTITIONS_IN_LEN,
 518                             MC_CMD_NVRAM_PARTITIONS_OUT_LENMAX)];
 519         unsigned int npartn;
 520         efx_rc_t rc;
 521
 522         (void) memset(payload, 0, sizeof (payload));
 523         req.emr_cmd = MC_CMD_NVRAM_PARTITIONS;
 524         req.emr_in_buf = payload;
 525         req.emr_in_length = MC_CMD_NVRAM_PARTITIONS_IN_LEN;
 526         req.emr_out_buf = payload;
 527         req.emr_out_length = MC_CMD_NVRAM_PARTITIONS_OUT_LENMAX;
 528
 529         efx_mcdi_execute(enp, &req);
 530
 531         if (req.emr_rc != 0) {
 532                 rc = req.emr_rc;
 533                 goto fail1;
 534         }
 535
 536         if (req.emr_out_length_used < MC_CMD_NVRAM_PARTITIONS_OUT_LENMIN) {
 537                 rc = EMSGSIZE;
 538                 goto fail2;
 539         }
 540         npartn = MCDI_OUT_DWORD(req, NVRAM_PARTITIONS_OUT_NUM_PARTITIONS);
 541
 542         if (req.emr_out_length_used < MC_CMD_NVRAM_PARTITIONS_OUT_LEN(npartn)) {
 543                 rc = ENOENT;
 544                 goto fail3;
 545         }
 546
 547         if (size < npartn * sizeof (uint32_t)) {
 548                 rc = ENOSPC;
 549                 goto fail3;
 550         }
 551
 552         *npartnp = npartn;
 553
 554         memcpy(data,
 555             MCDI_OUT2(req, uint32_t, NVRAM_PARTITIONS_OUT_TYPE_ID),
 556             (npartn * sizeof (uint32_t)));
 557
 558         return (0);
 559
 560 fail3:
 561         EFSYS_PROBE(fail3);
 562 fail2:
 563         EFSYS_PROBE(fail2);
 564 fail1:
 565         EFSYS_PROBE1(fail1, efx_rc_t, rc);
 566
 567         return (rc);
 568 }
 569
 570         __checkReturn           efx_rc_t
 571 efx_mcdi_nvram_metadata(
 572         __in                    efx_nic_t *enp,
 573         __in                    uint32_t partn,
 574         __out                   uint32_t *subtypep,
 575         __out_ecount(4)         uint16_t version[4],
 576         __out_bcount_opt(size)  char *descp,
 577         __in                    size_t size)
 578 {
 579         efx_mcdi_req_t req;
 580         uint8_t payload[MAX(MC_CMD_NVRAM_METADATA_IN_LEN,
 581                             MC_CMD_NVRAM_METADATA_OUT_LENMAX)];
 582         efx_rc_t rc;
 583
 584         (void) memset(payload, 0, sizeof (payload));
 585         req.emr_cmd = MC_CMD_NVRAM_METADATA;
 586         req.emr_in_buf = payload;
 587         req.emr_in_length = MC_CMD_NVRAM_METADATA_IN_LEN;
 588         req.emr_out_buf = payload;
 589         req.emr_out_length = MC_CMD_NVRAM_METADATA_OUT_LENMAX;
 590
 591         MCDI_IN_SET_DWORD(req, NVRAM_METADATA_IN_TYPE, partn);
 592
 593         efx_mcdi_execute_quiet(enp, &req);
 594
 595         if (req.emr_rc != 0) {
 596                 rc = req.emr_rc;
 597                 goto fail1;
 598         }
 599
 600         if (req.emr_out_length_used < MC_CMD_NVRAM_METADATA_OUT_LENMIN) {
 601                 rc = EMSGSIZE;
 602                 goto fail2;
 603         }
 604
 605         if (MCDI_OUT_DWORD_FIELD(req, NVRAM_METADATA_OUT_FLAGS,
 606                 NVRAM_METADATA_OUT_SUBTYPE_VALID)) {
 607                 *subtypep = MCDI_OUT_DWORD(req, NVRAM_METADATA_OUT_SUBTYPE);
 608         } else {
 609                 *subtypep = 0;
 610         }
 611
 612         if (MCDI_OUT_DWORD_FIELD(req, NVRAM_METADATA_OUT_FLAGS,
 613                 NVRAM_METADATA_OUT_VERSION_VALID)) {
 614                 version[0] = MCDI_OUT_WORD(req, NVRAM_METADATA_OUT_VERSION_W);
 615                 version[1] = MCDI_OUT_WORD(req, NVRAM_METADATA_OUT_VERSION_X);
 616                 version[2] = MCDI_OUT_WORD(req, NVRAM_METADATA_OUT_VERSION_Y);
 617                 version[3] = MCDI_OUT_WORD(req, NVRAM_METADATA_OUT_VERSION_Z);
 618         } else {
 619                 version[0] = version[1] = version[2] = version[3] = 0;
 620         }
 621
 622         if (MCDI_OUT_DWORD_FIELD(req, NVRAM_METADATA_OUT_FLAGS,
 623                 NVRAM_METADATA_OUT_DESCRIPTION_VALID)) {
 624                 /* Return optional descrition string */
 625                 if ((descp != NULL) && (size > 0)) {
 626                         size_t desclen;
 627
 628                         descp[0] = '\0';
 629                         desclen = (req.emr_out_length_used
 630                             - MC_CMD_NVRAM_METADATA_OUT_LEN(0));
 631
 632                         EFSYS_ASSERT3U(desclen, <=,
 633                             MC_CMD_NVRAM_METADATA_OUT_DESCRIPTION_MAXNUM);
 634
 635                         if (size < desclen) {
 636                                 rc = ENOSPC;
 637                                 goto fail3;
 638                         }
 639
 640                         memcpy(descp, MCDI_OUT2(req, char,
 641                                 NVRAM_METADATA_OUT_DESCRIPTION),
 642                             desclen);
 643
 644                         /* Ensure string is NUL terminated */
 645                         descp[desclen] = '\0';
 646                 }
 647         }
 648
 649         return (0);
 650
 651 fail3:
 652         EFSYS_PROBE(fail3);
 653 fail2:
 654         EFSYS_PROBE(fail2);
 655 fail1:
 656         EFSYS_PROBE1(fail1, efx_rc_t, rc);
 657
 658         return (rc);
 659 }
 660
 661         __checkReturn           efx_rc_t
 662 efx_mcdi_nvram_info(
 663         __in                    efx_nic_t *enp,
 664         __in                    uint32_t partn,
 665         __out_opt               size_t *sizep,
 666         __out_opt               uint32_t *addressp,
 667         __out_opt               uint32_t *erase_sizep,
 668         __out_opt               uint32_t *write_sizep)
 669 {
 670         uint8_t payload[MAX(MC_CMD_NVRAM_INFO_IN_LEN,
 671                             MC_CMD_NVRAM_INFO_V2_OUT_LEN)];
 672         efx_mcdi_req_t req;
 673         efx_rc_t rc;
 674
 675         (void) memset(payload, 0, sizeof (payload));
 676         req.emr_cmd = MC_CMD_NVRAM_INFO;
 677         req.emr_in_buf = payload;
 678         req.emr_in_length = MC_CMD_NVRAM_INFO_IN_LEN;
 679         req.emr_out_buf = payload;
 680         req.emr_out_length = MC_CMD_NVRAM_INFO_V2_OUT_LEN;
 681
 682         MCDI_IN_SET_DWORD(req, NVRAM_INFO_IN_TYPE, partn);
 683
 684         efx_mcdi_execute_quiet(enp, &req);
 685
 686         if (req.emr_rc != 0) {
 687                 rc = req.emr_rc;
 688                 goto fail1;
 689         }
 690
 691         if (req.emr_out_length_used < MC_CMD_NVRAM_INFO_OUT_LEN) {
 692                 rc = EMSGSIZE;
 693                 goto fail2;
 694         }
 695
 696         if (sizep)
 697                 *sizep = MCDI_OUT_DWORD(req, NVRAM_INFO_OUT_SIZE);
 698
 699         if (addressp)
 700                 *addressp = MCDI_OUT_DWORD(req, NVRAM_INFO_OUT_PHYSADDR);
 701
 702         if (erase_sizep)
 703                 *erase_sizep = MCDI_OUT_DWORD(req, NVRAM_INFO_OUT_ERASESIZE);
 704
 705         if (write_sizep) {
 706                 *write_sizep =
 707                         (req.emr_out_length_used <
 708                             MC_CMD_NVRAM_INFO_V2_OUT_LEN) ?
 709                         0 : MCDI_OUT_DWORD(req, NVRAM_INFO_V2_OUT_WRITESIZE);
 710         }
 711
 712         return (0);
 713
 714 fail2:
 715         EFSYS_PROBE(fail2);
 716 fail1:
 717         EFSYS_PROBE1(fail1, efx_rc_t, rc);
 718
 719         return (rc);
 720 }
 721
 722 /*
 723  * MC_CMD_NVRAM_UPDATE_START_V2 must be used to support firmware-verified
 724  * NVRAM updates. Older firmware will ignore the flags field in the request.
 725  */
 726         __checkReturn           efx_rc_t
 727 efx_mcdi_nvram_update_start(
 728         __in                    efx_nic_t *enp,
 729         __in                    uint32_t partn)
 730 {
 731         uint8_t payload[MAX(MC_CMD_NVRAM_UPDATE_START_V2_IN_LEN,
 732                             MC_CMD_NVRAM_UPDATE_START_OUT_LEN)];
 733         efx_mcdi_req_t req;
 734         efx_rc_t rc;
 735
 736         (void) memset(payload, 0, sizeof (payload));
 737         req.emr_cmd = MC_CMD_NVRAM_UPDATE_START;
 738         req.emr_in_buf = payload;
 739         req.emr_in_length = MC_CMD_NVRAM_UPDATE_START_V2_IN_LEN;
 740         req.emr_out_buf = payload;
 741         req.emr_out_length = MC_CMD_NVRAM_UPDATE_START_OUT_LEN;
 742
 743         MCDI_IN_SET_DWORD(req, NVRAM_UPDATE_START_V2_IN_TYPE, partn);
 744
 745         MCDI_IN_POPULATE_DWORD_1(req, NVRAM_UPDATE_START_V2_IN_FLAGS,
 746             NVRAM_UPDATE_START_V2_IN_FLAG_REPORT_VERIFY_RESULT, 1);
 747
 748         efx_mcdi_execute(enp, &req);
 749
 750         if (req.emr_rc != 0) {
 751                 rc = req.emr_rc;
 752                 goto fail1;
 753         }
 754
 755         return (0);
 756
 757 fail1:
 758         EFSYS_PROBE1(fail1, efx_rc_t, rc);
 759
 760         return (rc);
 761 }
 762
 763         __checkReturn           efx_rc_t
 764 efx_mcdi_nvram_read(
 765         __in                    efx_nic_t *enp,
 766         __in                    uint32_t partn,
 767         __in                    uint32_t offset,
 768         __out_bcount(size)      caddr_t data,
 769         __in                    size_t size,
 770         __in                    uint32_t mode)
 771 {
 772         efx_mcdi_req_t req;
 773         uint8_t payload[MAX(MC_CMD_NVRAM_READ_IN_V2_LEN,
 774                             MC_CMD_NVRAM_READ_OUT_LENMAX)];
 775         efx_rc_t rc;
 776
 777         if (size > MC_CMD_NVRAM_READ_OUT_LENMAX) {
 778                 rc = EINVAL;
 779                 goto fail1;
 780         }
 781
 782         (void) memset(payload, 0, sizeof (payload));
 783         req.emr_cmd = MC_CMD_NVRAM_READ;
 784         req.emr_in_buf = payload;
 785         req.emr_in_length = MC_CMD_NVRAM_READ_IN_V2_LEN;
 786         req.emr_out_buf = payload;
 787         req.emr_out_length = MC_CMD_NVRAM_READ_OUT_LENMAX;
 788
 789         MCDI_IN_SET_DWORD(req, NVRAM_READ_IN_V2_TYPE, partn);
 790         MCDI_IN_SET_DWORD(req, NVRAM_READ_IN_V2_OFFSET, offset);
 791         MCDI_IN_SET_DWORD(req, NVRAM_READ_IN_V2_LENGTH, size);
 792         MCDI_IN_SET_DWORD(req, NVRAM_READ_IN_V2_MODE, mode);
 793
 794         efx_mcdi_execute(enp, &req);
 795
 796         if (req.emr_rc != 0) {
 797                 rc = req.emr_rc;
 798                 goto fail1;
 799         }
 800
 801         if (req.emr_out_length_used < MC_CMD_NVRAM_READ_OUT_LEN(size)) {
 802                 rc = EMSGSIZE;
 803                 goto fail2;
 804         }
 805
 806         memcpy(data,
 807             MCDI_OUT2(req, uint8_t, NVRAM_READ_OUT_READ_BUFFER),
 808             size);
 809
 810         return (0);
 811
 812 fail2:
 813         EFSYS_PROBE(fail2);
 814 fail1:
 815         EFSYS_PROBE1(fail1, efx_rc_t, rc);
 816
 817         return (rc);
 818 }
 819
 820         __checkReturn           efx_rc_t
 821 efx_mcdi_nvram_erase(
 822         __in                    efx_nic_t *enp,
 823         __in                    uint32_t partn,
 824         __in                    uint32_t offset,
 825         __in                    size_t size)
 826 {
 827         efx_mcdi_req_t req;
 828         uint8_t payload[MAX(MC_CMD_NVRAM_ERASE_IN_LEN,
 829                             MC_CMD_NVRAM_ERASE_OUT_LEN)];
 830         efx_rc_t rc;
 831
 832         (void) memset(payload, 0, sizeof (payload));
 833         req.emr_cmd = MC_CMD_NVRAM_ERASE;
 834         req.emr_in_buf = payload;
 835         req.emr_in_length = MC_CMD_NVRAM_ERASE_IN_LEN;
 836         req.emr_out_buf = payload;
 837         req.emr_out_length = MC_CMD_NVRAM_ERASE_OUT_LEN;
 838
 839         MCDI_IN_SET_DWORD(req, NVRAM_ERASE_IN_TYPE, partn);
 840         MCDI_IN_SET_DWORD(req, NVRAM_ERASE_IN_OFFSET, offset);
 841         MCDI_IN_SET_DWORD(req, NVRAM_ERASE_IN_LENGTH, size);
 842
 843         efx_mcdi_execute(enp, &req);
 844
 845         if (req.emr_rc != 0) {
 846                 rc = req.emr_rc;
 847                 goto fail1;
 848         }
 849
 850         return (0);
 851
 852 fail1:
 853         EFSYS_PROBE1(fail1, efx_rc_t, rc);
 854
 855         return (rc);
 856 }
 857
 858 /*
 859  * The NVRAM_WRITE MCDI command is a V1 command and so is supported by both
 860  * Sienna and EF10 based boards.  However EF10 based boards support the use
 861  * of this command with payloads up to the maximum MCDI V2 payload length.
 862  */
 863         __checkReturn           efx_rc_t
 864 efx_mcdi_nvram_write(
 865         __in                    efx_nic_t *enp,
 866         __in                    uint32_t partn,
 867         __in                    uint32_t offset,
 868         __out_bcount(size)      caddr_t data,
 869         __in                    size_t size)
 870 {
 871         efx_mcdi_req_t req;
 872         uint8_t payload[MAX(MCDI_CTL_SDU_LEN_MAX_V1,
 873                             MCDI_CTL_SDU_LEN_MAX_V2)];
 874         efx_rc_t rc;
 875         size_t max_data_size;
 876
 877         max_data_size = enp->en_nic_cfg.enc_mcdi_max_payload_length
 878             - MC_CMD_NVRAM_WRITE_IN_LEN(0);
 879         EFSYS_ASSERT3U(enp->en_nic_cfg.enc_mcdi_max_payload_length, >, 0);
 880         EFSYS_ASSERT3U(max_data_size, <,
 881                     enp->en_nic_cfg.enc_mcdi_max_payload_length);
 882
 883         if (size > max_data_size) {
 884                 rc = EINVAL;
 885                 goto fail1;
 886         }
 887
 888         (void) memset(payload, 0, sizeof (payload));
 889         req.emr_cmd = MC_CMD_NVRAM_WRITE;
 890         req.emr_in_buf = payload;
 891         req.emr_in_length = MC_CMD_NVRAM_WRITE_IN_LEN(size);
 892         req.emr_out_buf = payload;
 893         req.emr_out_length = MC_CMD_NVRAM_WRITE_OUT_LEN;
 894
 895         MCDI_IN_SET_DWORD(req, NVRAM_WRITE_IN_TYPE, partn);
 896         MCDI_IN_SET_DWORD(req, NVRAM_WRITE_IN_OFFSET, offset);
 897         MCDI_IN_SET_DWORD(req, NVRAM_WRITE_IN_LENGTH, size);
 898
 899         memcpy(MCDI_IN2(req, uint8_t, NVRAM_WRITE_IN_WRITE_BUFFER),
 900             data, size);
 901
 902         efx_mcdi_execute(enp, &req);
 903
 904         if (req.emr_rc != 0) {
 905                 rc = req.emr_rc;
 906                 goto fail2;
 907         }
 908
 909         return (0);
 910
 911 fail2:
 912         EFSYS_PROBE(fail2);
 913 fail1:
 914         EFSYS_PROBE1(fail1, efx_rc_t, rc);
 915
 916         return (rc);
 917 }
 918
 919
 920 /*
 921  * MC_CMD_NVRAM_UPDATE_FINISH_V2 must be used to support firmware-verified
 922  * NVRAM updates. Older firmware will ignore the flags field in the request.
 923  */
 924         __checkReturn           efx_rc_t
 925 efx_mcdi_nvram_update_finish(
 926         __in                    efx_nic_t *enp,
 927         __in                    uint32_t partn,
 928         __in                    boolean_t reboot,
 929         __out_opt               uint32_t *verify_resultp)
 930 {
 931         const efx_nic_cfg_t *encp = &enp->en_nic_cfg;
 932         efx_mcdi_req_t req;
 933         uint8_t payload[MAX(MC_CMD_NVRAM_UPDATE_FINISH_V2_IN_LEN,
 934                             MC_CMD_NVRAM_UPDATE_FINISH_V2_OUT_LEN)];
 935         uint32_t verify_result = MC_CMD_NVRAM_VERIFY_RC_UNKNOWN;
 936         efx_rc_t rc;
 937
 938         (void) memset(payload, 0, sizeof (payload));
 939         req.emr_cmd = MC_CMD_NVRAM_UPDATE_FINISH;
 940         req.emr_in_buf = payload;
 941         req.emr_in_length = MC_CMD_NVRAM_UPDATE_FINISH_V2_IN_LEN;
 942         req.emr_out_buf = payload;
 943         req.emr_out_length = MC_CMD_NVRAM_UPDATE_FINISH_V2_OUT_LEN;
 944
 945         MCDI_IN_SET_DWORD(req, NVRAM_UPDATE_FINISH_V2_IN_TYPE, partn);
 946         MCDI_IN_SET_DWORD(req, NVRAM_UPDATE_FINISH_V2_IN_REBOOT, reboot);
 947
 948         MCDI_IN_POPULATE_DWORD_1(req, NVRAM_UPDATE_FINISH_V2_IN_FLAGS,
 949             NVRAM_UPDATE_FINISH_V2_IN_FLAG_REPORT_VERIFY_RESULT, 1);
 950
 951         efx_mcdi_execute(enp, &req);
 952
 953         if (req.emr_rc != 0) {
 954                 rc = req.emr_rc;
 955                 goto fail1;
 956         }
 957
 958         if (req.emr_out_length_used < MC_CMD_NVRAM_UPDATE_FINISH_V2_OUT_LEN) {
 959                 verify_result = MC_CMD_NVRAM_VERIFY_RC_UNKNOWN;
 960                 if (encp->enc_nvram_update_verify_result_supported) {
 961                         /* Result of update verification is missing */
 962                         rc = EMSGSIZE;
 963                         goto fail2;
 964                 }
 965         } else {
 966                 verify_result =
 967                     MCDI_OUT_DWORD(req, NVRAM_UPDATE_FINISH_V2_OUT_RESULT_CODE);
 968         }
 969
 970         if ((encp->enc_nvram_update_verify_result_supported) &&
 971             (verify_result != MC_CMD_NVRAM_VERIFY_RC_SUCCESS)) {
 972                 /* Update verification failed */
 973                 rc = EINVAL;
 974                 goto fail3;
 975         }
 976
 977         if (verify_resultp != NULL)
 978                 *verify_resultp = verify_result;
 979
 980         return (0);
 981
 982 fail3:
 983         EFSYS_PROBE(fail3);
 984 fail2:
 985         EFSYS_PROBE(fail2);
 986 fail1:
 987         EFSYS_PROBE1(fail1, efx_rc_t, rc);
 988
 989         /* Always report verification result */
 990         if (verify_resultp != NULL)
 991                 *verify_resultp = verify_result;
 992
 993         return (rc);
 994 }
 995
 996 #if EFSYS_OPT_DIAG
 997
 998         __checkReturn           efx_rc_t
 999 efx_mcdi_nvram_test(
1000         __in                    efx_nic_t *enp,
1001         __in                    uint32_t partn)
1002 {
1003         efx_mcdi_req_t req;
1004         uint8_t payload[MAX(MC_CMD_NVRAM_TEST_IN_LEN,
1005                             MC_CMD_NVRAM_TEST_OUT_LEN)];
1006         int result;
1007         efx_rc_t rc;
1008
1009         (void) memset(payload, 0, sizeof (payload));
1010         req.emr_cmd = MC_CMD_NVRAM_TEST;
1011         req.emr_in_buf = payload;
1012         req.emr_in_length = MC_CMD_NVRAM_TEST_IN_LEN;
1013         req.emr_out_buf = payload;
1014         req.emr_out_length = MC_CMD_NVRAM_TEST_OUT_LEN;
1015
1016         MCDI_IN_SET_DWORD(req, NVRAM_TEST_IN_TYPE, partn);
1017
1018         efx_mcdi_execute(enp, &req);
1019
1020         if (req.emr_rc != 0) {
1021                 rc = req.emr_rc;
1022                 goto fail1;
1023         }
1024
1025         if (req.emr_out_length_used < MC_CMD_NVRAM_TEST_OUT_LEN) {
1026                 rc = EMSGSIZE;
1027                 goto fail2;
1028         }
1029
1030         result = MCDI_OUT_DWORD(req, NVRAM_TEST_OUT_RESULT);
1031         if (result == MC_CMD_NVRAM_TEST_FAIL) {
1032
1033                 EFSYS_PROBE1(nvram_test_failure, int, partn);
1034
1035                 rc = (EINVAL);
1036                 goto fail3;
1037         }
1038
1039         return (0);
1040
1041 fail3:
1042         EFSYS_PROBE(fail3);
1043 fail2:
1044         EFSYS_PROBE(fail2);
1045 fail1:
1046         EFSYS_PROBE1(fail1, efx_rc_t, rc);
1047
1048         return (rc);
1049 }
1050
1051 #endif  /* EFSYS_OPT_DIAG */
1052
1053
1054 #endif /* EFSYS_OPT_NVRAM || EFSYS_OPT_VPD */