sys/dev/nvdimm/nvdimm_spa.c

   1 /*-
   2  * Copyright (c) 2017, 2018 The FreeBSD Foundation
   3  * All rights reserved.
   4  *
   5  * This software was developed by Konstantin Belousov <kib@FreeBSD.org>
   6  * under sponsorship from the FreeBSD Foundation.
   7  *
   8  * Redistribution and use in source and binary forms, with or without
   9  * modification, are permitted provided that the following conditions
  10  * are met:
  11  * 1. Redistributions of source code must retain the above copyright
  12  *    notice, this list of conditions and the following disclaimer.
  13  * 2. Redistributions in binary form must reproduce the above copyright
  14  *    notice, this list of conditions and the following disclaimer in the
  15  *    documentation and/or other materials provided with the distribution.
  16  *
  17  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
  18  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  19  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  20  * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
  21  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  22  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  23  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  24  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  25  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  26  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  27  * SUCH DAMAGE.
  28  */
  29
  30 #include <sys/cdefs.h>
  31 __FBSDID("$FreeBSD$");
  32
  33 #include "opt_acpi.h"
  34 #include "opt_ddb.h"
  35
  36 #include <sys/param.h>
  37 #include <sys/systm.h>
  38 #include <sys/bio.h>
  39 #include <sys/bus.h>
  40 #include <sys/conf.h>
  41 #include <sys/devicestat.h>
  42 #include <sys/disk.h>
  43 #include <sys/efi.h>
  44 #include <sys/kernel.h>
  45 #include <sys/kthread.h>
  46 #include <sys/limits.h>
  47 #include <sys/lock.h>
  48 #include <sys/malloc.h>
  49 #include <sys/module.h>
  50 #include <sys/rwlock.h>
  51 #include <sys/sglist.h>
  52 #include <sys/uio.h>
  53 #include <sys/uuid.h>
  54 #include <geom/geom.h>
  55 #include <geom/geom_int.h>
  56 #include <machine/vmparam.h>
  57 #include <vm/vm.h>
  58 #include <vm/vm_object.h>
  59 #include <vm/vm_page.h>
  60 #include <vm/vm_pager.h>
  61 #include <contrib/dev/acpica/include/acpi.h>
  62 #include <contrib/dev/acpica/include/accommon.h>
  63 #include <contrib/dev/acpica/include/acuuid.h>
  64 #include <dev/acpica/acpivar.h>
  65 #include <dev/nvdimm/nvdimm_var.h>
  66
  67 struct SPA_mapping *spa_mappings;
  68 int spa_mappings_cnt;
  69
  70 static int
  71 nvdimm_spa_count(void *nfitsubtbl __unused, void *arg)
  72 {
  73         int *cnt;
  74
  75         cnt = arg;
  76         (*cnt)++;
  77         return (0);
  78 }
  79
  80 static struct nvdimm_SPA_uuid_list_elm {
  81         const char              *u_name;
  82         const char              *u_id_str;
  83         struct uuid             u_id;
  84         const bool              u_usr_acc;
  85 } nvdimm_SPA_uuid_list[] = {
  86         [SPA_TYPE_VOLATILE_MEMORY] = {
  87                 .u_name =       "VOLA MEM ",
  88                 .u_id_str =     UUID_VOLATILE_MEMORY,
  89                 .u_usr_acc =    true,
  90         },
  91         [SPA_TYPE_PERSISTENT_MEMORY] = {
  92                 .u_name =       "PERS MEM",
  93                 .u_id_str =     UUID_PERSISTENT_MEMORY,
  94                 .u_usr_acc =    true,
  95         },
  96         [SPA_TYPE_CONTROL_REGION] = {
  97                 .u_name =       "CTRL RG ",
  98                 .u_id_str =     UUID_CONTROL_REGION,
  99                 .u_usr_acc =    false,
 100         },
 101         [SPA_TYPE_DATA_REGION] = {
 102                 .u_name =       "DATA RG ",
 103                 .u_id_str =     UUID_DATA_REGION,
 104                 .u_usr_acc =    true,
 105         },
 106         [SPA_TYPE_VOLATILE_VIRTUAL_DISK] = {
 107                 .u_name =       "VIRT DSK",
 108                 .u_id_str =     UUID_VOLATILE_VIRTUAL_DISK,
 109                 .u_usr_acc =    true,
 110         },
 111         [SPA_TYPE_VOLATILE_VIRTUAL_CD] = {
 112                 .u_name =       "VIRT CD ",
 113                 .u_id_str =     UUID_VOLATILE_VIRTUAL_CD,
 114                 .u_usr_acc =    true,
 115         },
 116         [SPA_TYPE_PERSISTENT_VIRTUAL_DISK] = {
 117                 .u_name =       "PV DSK  ",
 118                 .u_id_str =     UUID_PERSISTENT_VIRTUAL_DISK,
 119                 .u_usr_acc =    true,
 120         },
 121         [SPA_TYPE_PERSISTENT_VIRTUAL_CD] = {
 122                 .u_name =       "PV CD   ",
 123                 .u_id_str =     UUID_PERSISTENT_VIRTUAL_CD,
 124                 .u_usr_acc =    true,
 125         },
 126 };
 127
 128 static vm_memattr_t
 129 nvdimm_spa_memattr(struct SPA_mapping *spa)
 130 {
 131         vm_memattr_t mode;
 132
 133         if ((spa->spa_efi_mem_flags & EFI_MD_ATTR_WB) != 0)
 134                 mode = VM_MEMATTR_WRITE_BACK;
 135         else if ((spa->spa_efi_mem_flags & EFI_MD_ATTR_WT) != 0)
 136                 mode = VM_MEMATTR_WRITE_THROUGH;
 137         else if ((spa->spa_efi_mem_flags & EFI_MD_ATTR_WC) != 0)
 138                 mode = VM_MEMATTR_WRITE_COMBINING;
 139         else if ((spa->spa_efi_mem_flags & EFI_MD_ATTR_WP) != 0)
 140                 mode = VM_MEMATTR_WRITE_PROTECTED;
 141         else if ((spa->spa_efi_mem_flags & EFI_MD_ATTR_UC) != 0)
 142                 mode = VM_MEMATTR_UNCACHEABLE;
 143         else {
 144                 if (bootverbose)
 145                         printf("SPA%d mapping attr unsupported\n",
 146                             spa->spa_nfit_idx);
 147                 mode = VM_MEMATTR_UNCACHEABLE;
 148         }
 149         return (mode);
 150 }
 151
 152 static int
 153 nvdimm_spa_uio(struct SPA_mapping *spa, struct uio *uio)
 154 {
 155         struct vm_page m, *ma;
 156         off_t off;
 157         vm_memattr_t mattr;
 158         int error, n;
 159
 160         error = 0;
 161         if (spa->spa_kva == NULL) {
 162                 mattr = nvdimm_spa_memattr(spa);
 163                 vm_page_initfake(&m, 0, mattr);
 164                 ma = &m;
 165                 while (uio->uio_resid > 0) {
 166                         if (uio->uio_offset >= spa->spa_len)
 167                                 break;
 168                         off = spa->spa_phys_base + uio->uio_offset;
 169                         vm_page_updatefake(&m, trunc_page(off), mattr);
 170                         n = PAGE_SIZE;
 171                         if (n > uio->uio_resid)
 172                                 n = uio->uio_resid;
 173                         error = uiomove_fromphys(&ma, off & PAGE_MASK, n, uio);
 174                         if (error != 0)
 175                                 break;
 176                 }
 177         } else {
 178                 while (uio->uio_resid > 0) {
 179                         if (uio->uio_offset >= spa->spa_len)
 180                                 break;
 181                         n = INT_MAX;
 182                         if (n > uio->uio_resid)
 183                                 n = uio->uio_resid;
 184                         if (uio->uio_offset + n > spa->spa_len)
 185                                 n = spa->spa_len - uio->uio_offset;
 186                         error = uiomove((char *)spa->spa_kva + uio->uio_offset,
 187                             n, uio);
 188                         if (error != 0)
 189                                 break;
 190                 }
 191         }
 192         return (error);
 193 }
 194
 195 static int
 196 nvdimm_spa_rw(struct cdev *dev, struct uio *uio, int ioflag)
 197 {
 198
 199         return (nvdimm_spa_uio(dev->si_drv1, uio));
 200 }
 201
 202 static int
 203 nvdimm_spa_ioctl(struct cdev *dev, u_long cmd, caddr_t data, int fflag,
 204     struct thread *td)
 205 {
 206         struct SPA_mapping *spa;
 207         int error;
 208
 209         spa = dev->si_drv1;
 210         error = 0;
 211         switch (cmd) {
 212         case DIOCGSECTORSIZE:
 213                 *(u_int *)data = DEV_BSIZE;
 214                 break;
 215         case DIOCGMEDIASIZE:
 216                 *(off_t *)data = spa->spa_len;
 217                 break;
 218         default:
 219                 error = ENOTTY;
 220                 break;
 221         }
 222         return (error);
 223 }
 224
 225 static int
 226 nvdimm_spa_mmap_single(struct cdev *dev, vm_ooffset_t *offset, vm_size_t size,
 227     vm_object_t *objp, int nprot)
 228 {
 229         struct SPA_mapping *spa;
 230
 231         spa = dev->si_drv1;
 232         if (spa->spa_obj == NULL)
 233                 return (ENXIO);
 234         if (*offset >= spa->spa_len || *offset + size < *offset ||
 235             *offset + size > spa->spa_len)
 236                 return (EINVAL);
 237         vm_object_reference(spa->spa_obj);
 238         *objp = spa->spa_obj;
 239         return (0);
 240 }
 241
 242 static struct cdevsw spa_cdevsw = {
 243         .d_version =    D_VERSION,
 244         .d_flags =      D_DISK,
 245         .d_name =       "nvdimm_spa",
 246         .d_read =       nvdimm_spa_rw,
 247         .d_write =      nvdimm_spa_rw,
 248         .d_ioctl =      nvdimm_spa_ioctl,
 249         .d_mmap_single = nvdimm_spa_mmap_single,
 250 };
 251
 252 static void
 253 nvdimm_spa_g_all_unmapped(struct SPA_mapping *spa, struct bio *bp,
 254     int rw)
 255 {
 256         struct vm_page maa[bp->bio_ma_n];
 257         vm_page_t ma[bp->bio_ma_n];
 258         vm_memattr_t mattr;
 259         int i;
 260
 261         mattr = nvdimm_spa_memattr(spa);
 262         for (i = 0; i < nitems(ma); i++) {
 263                 maa[i].flags = 0;
 264                 vm_page_initfake(&maa[i], spa->spa_phys_base +
 265                     trunc_page(bp->bio_offset) + PAGE_SIZE * i, mattr);
 266                 ma[i] = &maa[i];
 267         }
 268         if (rw == BIO_READ)
 269                 pmap_copy_pages(ma, bp->bio_offset & PAGE_MASK, bp->bio_ma,
 270                     bp->bio_ma_offset, bp->bio_length);
 271         else
 272                 pmap_copy_pages(bp->bio_ma, bp->bio_ma_offset, ma,
 273                     bp->bio_offset & PAGE_MASK, bp->bio_length);
 274 }
 275
 276 static void
 277 nvdimm_spa_g_thread(void *arg)
 278 {
 279         struct SPA_mapping *spa;
 280         struct bio *bp;
 281         struct uio auio;
 282         struct iovec aiovec;
 283         int error;
 284
 285         spa = arg;
 286         for (;;) {
 287                 mtx_lock(&spa->spa_g_mtx);
 288                 for (;;) {
 289                         bp = bioq_takefirst(&spa->spa_g_queue);
 290                         if (bp != NULL)
 291                                 break;
 292                         msleep(&spa->spa_g_queue, &spa->spa_g_mtx, PRIBIO,
 293                             "spa_g", 0);
 294                         if (!spa->spa_g_proc_run) {
 295                                 spa->spa_g_proc_exiting = true;
 296                                 wakeup(&spa->spa_g_queue);
 297                                 mtx_unlock(&spa->spa_g_mtx);
 298                                 kproc_exit(0);
 299                         }
 300                         continue;
 301                 }
 302                 mtx_unlock(&spa->spa_g_mtx);
 303                 if (bp->bio_cmd != BIO_READ && bp->bio_cmd != BIO_WRITE &&
 304                     bp->bio_cmd != BIO_FLUSH) {
 305                         error = EOPNOTSUPP;
 306                         goto completed;
 307                 }
 308
 309                 error = 0;
 310                 if (bp->bio_cmd == BIO_FLUSH) {
 311                         if (spa->spa_kva != NULL) {
 312                                 pmap_large_map_wb(spa->spa_kva, spa->spa_len);
 313                         } else {
 314                                 pmap_flush_cache_phys_range(
 315                                     (vm_paddr_t)spa->spa_phys_base,
 316                                     (vm_paddr_t)spa->spa_phys_base +
 317                                     spa->spa_len, nvdimm_spa_memattr(spa));
 318                         }
 319                         /*
 320                          * XXX flush IMC
 321                          */
 322                         goto completed;
 323                 }
 324
 325                 if ((bp->bio_flags & BIO_UNMAPPED) != 0) {
 326                         if (spa->spa_kva != NULL) {
 327                                 aiovec.iov_base = (char *)spa->spa_kva +
 328                                     bp->bio_offset;
 329                                 aiovec.iov_len = bp->bio_length;
 330                                 auio.uio_iov = &aiovec;
 331                                 auio.uio_iovcnt = 1;
 332                                 auio.uio_resid = bp->bio_length;
 333                                 auio.uio_offset = bp->bio_offset;
 334                                 auio.uio_segflg = UIO_SYSSPACE;
 335                                 auio.uio_rw = bp->bio_cmd == BIO_READ ?
 336                                     UIO_WRITE : UIO_READ;
 337                                 auio.uio_td = curthread;
 338                                 error = uiomove_fromphys(bp->bio_ma,
 339                                     bp->bio_ma_offset, bp->bio_length, &auio);
 340                         } else {
 341                                 nvdimm_spa_g_all_unmapped(spa, bp, bp->bio_cmd);
 342                                 error = 0;
 343                         }
 344                 } else {
 345                         aiovec.iov_base = bp->bio_data;
 346                         aiovec.iov_len = bp->bio_length;
 347                         auio.uio_iov = &aiovec;
 348                         auio.uio_iovcnt = 1;
 349                         auio.uio_resid = bp->bio_length;
 350                         auio.uio_offset = bp->bio_offset;
 351                         auio.uio_segflg = UIO_SYSSPACE;
 352                         auio.uio_rw = bp->bio_cmd == BIO_READ ? UIO_READ :
 353                             UIO_WRITE;
 354                         auio.uio_td = curthread;
 355                         error = nvdimm_spa_uio(spa, &auio);
 356                 }
 357                 devstat_end_transaction_bio(spa->spa_g_devstat, bp);
 358 completed:
 359                 bp->bio_completed = bp->bio_length;
 360                 g_io_deliver(bp, error);
 361         }
 362 }
 363
 364 static void
 365 nvdimm_spa_g_start(struct bio *bp)
 366 {
 367         struct SPA_mapping *spa;
 368
 369         spa = bp->bio_to->geom->softc;
 370         if (bp->bio_cmd == BIO_READ || bp->bio_cmd == BIO_WRITE) {
 371                 mtx_lock(&spa->spa_g_stat_mtx);
 372                 devstat_start_transaction_bio(spa->spa_g_devstat, bp);
 373                 mtx_unlock(&spa->spa_g_stat_mtx);
 374         }
 375         mtx_lock(&spa->spa_g_mtx);
 376         bioq_disksort(&spa->spa_g_queue, bp);
 377         wakeup(&spa->spa_g_queue);
 378         mtx_unlock(&spa->spa_g_mtx);
 379 }
 380
 381 static int
 382 nvdimm_spa_g_access(struct g_provider *pp, int r, int w, int e)
 383 {
 384
 385         return (0);
 386 }
 387
 388 static g_init_t nvdimm_spa_g_init;
 389 static g_fini_t nvdimm_spa_g_fini;
 390
 391 struct g_class nvdimm_spa_g_class = {
 392         .name =         "SPA",
 393         .version =      G_VERSION,
 394         .start =        nvdimm_spa_g_start,
 395         .access =       nvdimm_spa_g_access,
 396         .init =         nvdimm_spa_g_init,
 397         .fini =         nvdimm_spa_g_fini,
 398 };
 399 DECLARE_GEOM_CLASS(nvdimm_spa_g_class, g_spa);
 400
 401 static int
 402 nvdimm_spa_init_one(struct SPA_mapping *spa, ACPI_NFIT_SYSTEM_ADDRESS *nfitaddr,
 403     int spa_type)
 404 {
 405         struct make_dev_args mda;
 406         struct sglist *spa_sg;
 407         int error, error1;
 408
 409         spa->spa_type = spa_type;
 410         spa->spa_domain = ((nfitaddr->Flags & ACPI_NFIT_PROXIMITY_VALID) != 0) ?
 411             nfitaddr->ProximityDomain : -1;
 412         spa->spa_nfit_idx = nfitaddr->RangeIndex;
 413         spa->spa_phys_base = nfitaddr->Address;
 414         spa->spa_len = nfitaddr->Length;
 415         spa->spa_efi_mem_flags = nfitaddr->MemoryMapping;
 416         if (bootverbose) {
 417                 printf("NVDIMM SPA%d base %#016jx len %#016jx %s fl %#jx\n",
 418                     spa->spa_nfit_idx,
 419                     (uintmax_t)spa->spa_phys_base, (uintmax_t)spa->spa_len,
 420                     nvdimm_SPA_uuid_list[spa_type].u_name,
 421                     spa->spa_efi_mem_flags);
 422         }
 423         if (!nvdimm_SPA_uuid_list[spa_type].u_usr_acc)
 424                 return (0);
 425
 426         error1 = pmap_large_map(spa->spa_phys_base, spa->spa_len,
 427             &spa->spa_kva, nvdimm_spa_memattr(spa));
 428         if (error1 != 0) {
 429                 printf("NVDIMM SPA%d cannot map into KVA, error %d\n",
 430                     spa->spa_nfit_idx, error1);
 431                 spa->spa_kva = NULL;
 432         }
 433
 434         spa_sg = sglist_alloc(1, M_WAITOK);
 435         error = sglist_append_phys(spa_sg, spa->spa_phys_base,
 436             spa->spa_len);
 437         if (error == 0) {
 438                 spa->spa_obj = vm_pager_allocate(OBJT_SG, spa_sg, spa->spa_len,
 439                     VM_PROT_ALL, 0, NULL);
 440                 if (spa->spa_obj == NULL) {
 441                         printf("NVDIMM SPA%d failed to alloc vm object",
 442                             spa->spa_nfit_idx);
 443                         sglist_free(spa_sg);
 444                 }
 445         } else {
 446                 printf("NVDIMM SPA%d failed to init sglist, error %d",
 447                     spa->spa_nfit_idx, error);
 448                 sglist_free(spa_sg);
 449         }
 450
 451         make_dev_args_init(&mda);
 452         mda.mda_flags = MAKEDEV_WAITOK | MAKEDEV_CHECKNAME;
 453         mda.mda_devsw = &spa_cdevsw;
 454         mda.mda_cr = NULL;
 455         mda.mda_uid = UID_ROOT;
 456         mda.mda_gid = GID_OPERATOR;
 457         mda.mda_mode = 0660;
 458         mda.mda_si_drv1 = spa;
 459         error = make_dev_s(&mda, &spa->spa_dev, "nvdimm_spa%d",
 460             spa->spa_nfit_idx);
 461         if (error != 0) {
 462                 printf("NVDIMM SPA%d cannot create devfs node, error %d\n",
 463                     spa->spa_nfit_idx, error);
 464                 if (error1 == 0)
 465                         error1 = error;
 466         }
 467
 468         bioq_init(&spa->spa_g_queue);
 469         mtx_init(&spa->spa_g_mtx, "spag", NULL, MTX_DEF);
 470         mtx_init(&spa->spa_g_stat_mtx, "spagst", NULL, MTX_DEF);
 471         spa->spa_g_proc_run = true;
 472         spa->spa_g_proc_exiting = false;
 473         error = kproc_create(nvdimm_spa_g_thread, spa, &spa->spa_g_proc, 0, 0,
 474             "g_spa%d", spa->spa_nfit_idx);
 475         if (error != 0) {
 476                 printf("NVDIMM SPA%d cannot create geom worker, error %d\n",
 477                     spa->spa_nfit_idx, error);
 478                 if (error1 == 0)
 479                         error1 = error;
 480         } else {
 481                 g_topology_assert();
 482                 spa->spa_g = g_new_geomf(&nvdimm_spa_g_class, "spa%d",
 483                     spa->spa_nfit_idx);
 484                 spa->spa_g->softc = spa;
 485                 spa->spa_p = g_new_providerf(spa->spa_g, "spa%d",
 486                     spa->spa_nfit_idx);
 487                 spa->spa_p->mediasize = spa->spa_len;
 488                 spa->spa_p->sectorsize = DEV_BSIZE;
 489                 spa->spa_p->flags |= G_PF_DIRECT_SEND | G_PF_DIRECT_RECEIVE |
 490                     G_PF_ACCEPT_UNMAPPED;
 491                 g_error_provider(spa->spa_p, 0);
 492                 spa->spa_g_devstat = devstat_new_entry("spa", spa->spa_nfit_idx,
 493                     DEV_BSIZE, DEVSTAT_ALL_SUPPORTED, DEVSTAT_TYPE_DIRECT,
 494                     DEVSTAT_PRIORITY_MAX);
 495         }
 496         return (error1);
 497 }
 498
 499 static void
 500 nvdimm_spa_fini_one(struct SPA_mapping *spa)
 501 {
 502
 503         mtx_lock(&spa->spa_g_mtx);
 504         spa->spa_g_proc_run = false;
 505         wakeup(&spa->spa_g_queue);
 506         while (!spa->spa_g_proc_exiting)
 507                 msleep(&spa->spa_g_queue, &spa->spa_g_mtx, PRIBIO, "spa_e", 0);
 508         mtx_unlock(&spa->spa_g_mtx);
 509         if (spa->spa_g != NULL) {
 510                 g_topology_lock();
 511                 g_wither_geom(spa->spa_g, ENXIO);
 512                 g_topology_unlock();
 513                 spa->spa_g = NULL;
 514                 spa->spa_p = NULL;
 515         }
 516         if (spa->spa_g_devstat != NULL) {
 517                 devstat_remove_entry(spa->spa_g_devstat);
 518                 spa->spa_g_devstat = NULL;
 519         }
 520         if (spa->spa_dev != NULL) {
 521                 destroy_dev(spa->spa_dev);
 522                 spa->spa_dev = NULL;
 523         }
 524         vm_object_deallocate(spa->spa_obj);
 525         if (spa->spa_kva != NULL) {
 526                 pmap_large_unmap(spa->spa_kva, spa->spa_len);
 527                 spa->spa_kva = NULL;
 528         }
 529         mtx_destroy(&spa->spa_g_mtx);
 530         mtx_destroy(&spa->spa_g_stat_mtx);
 531 }
 532
 533 static int
 534 nvdimm_spa_parse(void *nfitsubtbl, void *arg)
 535 {
 536         ACPI_NFIT_SYSTEM_ADDRESS *nfitaddr;
 537         struct SPA_mapping *spa;
 538         int error, *i, j;
 539
 540         i = arg;
 541         spa = &spa_mappings[*i];
 542         nfitaddr = nfitsubtbl;
 543
 544         for (j = 0; j < nitems(nvdimm_SPA_uuid_list); j++) {
 545                 /* XXXKIB: is ACPI UUID representation compatible ? */
 546                 if (uuidcmp((struct uuid *)&nfitaddr->RangeGuid,
 547                     &nvdimm_SPA_uuid_list[j].u_id) != 0)
 548                         continue;
 549                 error = nvdimm_spa_init_one(spa, nfitaddr, j);
 550                 if (error != 0)
 551                         nvdimm_spa_fini_one(spa);
 552                 break;
 553         }
 554         if (j == nitems(nvdimm_SPA_uuid_list) && bootverbose) {
 555                 printf("Unknown SPA UUID %d ", nfitaddr->RangeIndex);
 556                 printf_uuid((struct uuid *)&nfitaddr->RangeGuid);
 557                 printf("\n");
 558         }
 559         (*i)++;
 560         return (0);
 561 }
 562
 563 static int
 564 nvdimm_spa_init1(ACPI_TABLE_NFIT *nfitbl)
 565 {
 566         struct nvdimm_SPA_uuid_list_elm *sle;
 567         int error, i;
 568
 569         for (i = 0; i < nitems(nvdimm_SPA_uuid_list); i++) {
 570                 sle = &nvdimm_SPA_uuid_list[i];
 571                 error = parse_uuid(sle->u_id_str, &sle->u_id);
 572                 if (error != 0) {
 573                         if (bootverbose)
 574                                 printf("nvdimm_identify: error %d parsing "
 575                                     "known SPA UUID %d %s\n", error, i,
 576                                     sle->u_id_str);
 577                         return (error);
 578                 }
 579         }
 580
 581         error = nvdimm_iterate_nfit(nfitbl, ACPI_NFIT_TYPE_SYSTEM_ADDRESS,
 582             nvdimm_spa_count, &spa_mappings_cnt);
 583         if (error != 0)
 584                 return (error);
 585         spa_mappings = malloc(sizeof(struct SPA_mapping) * spa_mappings_cnt,
 586             M_NVDIMM, M_WAITOK | M_ZERO);
 587         i = 0;
 588         error = nvdimm_iterate_nfit(nfitbl, ACPI_NFIT_TYPE_SYSTEM_ADDRESS,
 589             nvdimm_spa_parse, &i);
 590         if (error != 0) {
 591                 free(spa_mappings, M_NVDIMM);
 592                 spa_mappings = NULL;
 593                 return (error);
 594         }
 595         return (0);
 596 }
 597
 598 static void
 599 nvdimm_spa_g_init(struct g_class *mp __unused)
 600 {
 601         ACPI_TABLE_NFIT *nfitbl;
 602         ACPI_STATUS status;
 603         int error;
 604
 605         spa_mappings_cnt = 0;
 606         spa_mappings = NULL;
 607         if (acpi_disabled("nvdimm"))
 608                 return;
 609         status = AcpiGetTable(ACPI_SIG_NFIT, 1, (ACPI_TABLE_HEADER **)&nfitbl);
 610         if (ACPI_FAILURE(status)) {
 611                 if (bootverbose)
 612                         printf("nvdimm_spa_g_init: cannot find NFIT\n");
 613                 return;
 614         }
 615         error = nvdimm_spa_init1(nfitbl);
 616         if (error != 0)
 617                 printf("nvdimm_spa_g_init: error %d\n", error);
 618         AcpiPutTable(&nfitbl->Header);
 619 }
 620
 621 static void
 622 nvdimm_spa_g_fini(struct g_class *mp __unused)
 623 {
 624         int i;
 625
 626         if (spa_mappings == NULL)
 627                 return;
 628         for (i = 0; i < spa_mappings_cnt; i++)
 629                 nvdimm_spa_fini_one(&spa_mappings[i]);
 630         free(spa_mappings, M_NVDIMM);
 631         spa_mappings = NULL;
 632         spa_mappings_cnt = 0;
 633 }