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 if (spa->spa_kva == NULL) { 161 mattr = nvdimm_spa_memattr(spa); 162 vm_page_initfake(&m, 0, mattr); 163 ma = &m; 164 while (uio->uio_resid > 0) { 165 if (uio->uio_offset >= spa->spa_len) 166 break; 167 off = spa->spa_phys_base + uio->uio_offset; 168 vm_page_updatefake(&m, trunc_page(off), mattr); 169 n = PAGE_SIZE; 170 if (n > uio->uio_resid) 171 n = uio->uio_resid; 172 error = uiomove_fromphys(&ma, off & PAGE_MASK, n, uio); 173 if (error != 0) 174 break; 175 } 176 } else { 177 while (uio->uio_resid > 0) { 178 if (uio->uio_offset >= spa->spa_len) 179 break; 180 n = INT_MAX; 181 if (n > uio->uio_resid) 182 n = uio->uio_resid; 183 if (uio->uio_offset + n > spa->spa_len) 184 n = spa->spa_len - uio->uio_offset; 185 error = uiomove((char *)spa->spa_kva + uio->uio_offset, 186 n, uio); 187 if (error != 0) 188 break; 189 } 190 } 191 return (error); 192 } 193 194 static int 195 nvdimm_spa_rw(struct cdev *dev, struct uio *uio, int ioflag) 196 { 197 198 return (nvdimm_spa_uio(dev->si_drv1, uio)); 199 } 200 201 static int 202 nvdimm_spa_ioctl(struct cdev *dev, u_long cmd, caddr_t data, int fflag, 203 struct thread *td) 204 { 205 struct SPA_mapping *spa; 206 int error; 207 208 spa = dev->si_drv1; 209 error = 0; 210 switch (cmd) { 211 case DIOCGSECTORSIZE: 212 *(u_int *)data = DEV_BSIZE; 213 break; 214 case DIOCGMEDIASIZE: 215 *(off_t *)data = spa->spa_len; 216 break; 217 default: 218 error = ENOTTY; 219 break; 220 } 221 return (error); 222 } 223 224 static int 225 nvdimm_spa_mmap_single(struct cdev *dev, vm_ooffset_t *offset, vm_size_t size, 226 vm_object_t *objp, int nprot) 227 { 228 struct SPA_mapping *spa; 229 230 spa = dev->si_drv1; 231 if (spa->spa_obj == NULL) 232 return (ENXIO); 233 if (*offset >= spa->spa_len || *offset + size < *offset || 234 *offset + size > spa->spa_len) 235 return (EINVAL); 236 vm_object_reference(spa->spa_obj); 237 *objp = spa->spa_obj; 238 return (0); 239 } 240 241 static struct cdevsw spa_cdevsw = { 242 .d_version = D_VERSION, 243 .d_flags = D_DISK, 244 .d_name = "nvdimm_spa", 245 .d_read = nvdimm_spa_rw, 246 .d_write = nvdimm_spa_rw, 247 .d_ioctl = nvdimm_spa_ioctl, 248 .d_mmap_single = nvdimm_spa_mmap_single, 249 }; 250 251 static void 252 nvdimm_spa_g_all_unmapped(struct SPA_mapping *spa, struct bio *bp, 253 int rw) 254 { 255 struct vm_page maa[bp->bio_ma_n]; 256 vm_page_t ma[bp->bio_ma_n]; 257 vm_memattr_t mattr; 258 int i; 259 260 mattr = nvdimm_spa_memattr(spa); 261 for (i = 0; i < nitems(ma); i++) { 262 maa[i].flags = 0; 263 vm_page_initfake(&maa[i], spa->spa_phys_base + 264 trunc_page(bp->bio_offset) + PAGE_SIZE * i, mattr); 265 ma[i] = &maa[i]; 266 } 267 if (rw == BIO_READ) 268 pmap_copy_pages(ma, bp->bio_offset & PAGE_MASK, bp->bio_ma, 269 bp->bio_ma_offset, bp->bio_length); 270 else 271 pmap_copy_pages(bp->bio_ma, bp->bio_ma_offset, ma, 272 bp->bio_offset & PAGE_MASK, bp->bio_length); 273 } 274 275 static void 276 nvdimm_spa_g_thread(void *arg) 277 { 278 struct SPA_mapping *spa; 279 struct bio *bp; 280 struct uio auio; 281 struct iovec aiovec; 282 int error; 283 284 spa = arg; 285 for (;;) { 286 mtx_lock(&spa->spa_g_mtx); 287 for (;;) { 288 bp = bioq_takefirst(&spa->spa_g_queue); 289 if (bp != NULL) 290 break; 291 msleep(&spa->spa_g_queue, &spa->spa_g_mtx, PRIBIO, 292 "spa_g", 0); 293 if (!spa->spa_g_proc_run) { 294 spa->spa_g_proc_exiting = true; 295 wakeup(&spa->spa_g_queue); 296 mtx_unlock(&spa->spa_g_mtx); 297 kproc_exit(0); 298 } 299 continue; 300 } 301 mtx_unlock(&spa->spa_g_mtx); 302 if (bp->bio_cmd != BIO_READ && bp->bio_cmd != BIO_WRITE && 303 bp->bio_cmd != BIO_FLUSH) { 304 error = EOPNOTSUPP; 305 goto completed; 306 } 307 308 error = 0; 309 if (bp->bio_cmd == BIO_FLUSH) { 310 if (spa->spa_kva != NULL) { 311 pmap_large_map_wb(spa->spa_kva, spa->spa_len); 312 } else { 313 pmap_flush_cache_phys_range( 314 (vm_paddr_t)spa->spa_phys_base, 315 (vm_paddr_t)spa->spa_phys_base + 316 spa->spa_len, nvdimm_spa_memattr(spa)); 317 } 318 /* 319 * XXX flush IMC 320 */ 321 goto completed; 322 } 323 324 if ((bp->bio_flags & BIO_UNMAPPED) != 0) { 325 if (spa->spa_kva != NULL) { 326 aiovec.iov_base = (char *)spa->spa_kva + 327 bp->bio_offset; 328 aiovec.iov_len = bp->bio_length; 329 auio.uio_iov = &aiovec; 330 auio.uio_iovcnt = 1; 331 auio.uio_resid = bp->bio_length; 332 auio.uio_offset = bp->bio_offset; 333 auio.uio_segflg = UIO_SYSSPACE; 334 auio.uio_rw = bp->bio_cmd == BIO_READ ? 335 UIO_WRITE : UIO_READ; 336 auio.uio_td = curthread; 337 error = uiomove_fromphys(bp->bio_ma, 338 bp->bio_ma_offset, bp->bio_length, &auio); 339 } else { 340 nvdimm_spa_g_all_unmapped(spa, bp, bp->bio_cmd); 341 error = 0; 342 } 343 } else { 344 aiovec.iov_base = bp->bio_data; 345 aiovec.iov_len = bp->bio_length; 346 auio.uio_iov = &aiovec; 347 auio.uio_iovcnt = 1; 348 auio.uio_resid = bp->bio_length; 349 auio.uio_offset = bp->bio_offset; 350 auio.uio_segflg = UIO_SYSSPACE; 351 auio.uio_rw = bp->bio_cmd == BIO_READ ? UIO_READ : 352 UIO_WRITE; 353 auio.uio_td = curthread; 354 error = nvdimm_spa_uio(spa, &auio); 355 } 356 devstat_end_transaction_bio(spa->spa_g_devstat, bp); 357 completed: 358 bp->bio_completed = bp->bio_length; 359 g_io_deliver(bp, error); 360 } 361 } 362 363 static void 364 nvdimm_spa_g_start(struct bio *bp) 365 { 366 struct SPA_mapping *spa; 367 368 spa = bp->bio_to->geom->softc; 369 if (bp->bio_cmd == BIO_READ || bp->bio_cmd == BIO_WRITE) { 370 mtx_lock(&spa->spa_g_stat_mtx); 371 devstat_start_transaction_bio(spa->spa_g_devstat, bp); 372 mtx_unlock(&spa->spa_g_stat_mtx); 373 } 374 mtx_lock(&spa->spa_g_mtx); 375 bioq_disksort(&spa->spa_g_queue, bp); 376 wakeup(&spa->spa_g_queue); 377 mtx_unlock(&spa->spa_g_mtx); 378 } 379 380 static int 381 nvdimm_spa_g_access(struct g_provider *pp, int r, int w, int e) 382 { 383 384 return (0); 385 } 386 387 static g_init_t nvdimm_spa_g_init; 388 static g_fini_t nvdimm_spa_g_fini; 389 390 struct g_class nvdimm_spa_g_class = { 391 .name = "SPA", 392 .version = G_VERSION, 393 .start = nvdimm_spa_g_start, 394 .access = nvdimm_spa_g_access, 395 .init = nvdimm_spa_g_init, 396 .fini = nvdimm_spa_g_fini, 397 }; 398 DECLARE_GEOM_CLASS(nvdimm_spa_g_class, g_spa); 399 400 static int 401 nvdimm_spa_init_one(struct SPA_mapping *spa, ACPI_NFIT_SYSTEM_ADDRESS *nfitaddr, 402 int spa_type) 403 { 404 struct make_dev_args mda; 405 struct sglist *spa_sg; 406 int error, error1; 407 408 spa->spa_type = spa_type; 409 spa->spa_domain = ((nfitaddr->Flags & ACPI_NFIT_PROXIMITY_VALID) != 0) ? 410 nfitaddr->ProximityDomain : -1; 411 spa->spa_nfit_idx = nfitaddr->RangeIndex; 412 spa->spa_phys_base = nfitaddr->Address; 413 spa->spa_len = nfitaddr->Length; 414 spa->spa_efi_mem_flags = nfitaddr->MemoryMapping; 415 if (bootverbose) { 416 printf("NVDIMM SPA%d base %#016jx len %#016jx %s fl %#jx\n", 417 spa->spa_nfit_idx, 418 (uintmax_t)spa->spa_phys_base, (uintmax_t)spa->spa_len, 419 nvdimm_SPA_uuid_list[spa_type].u_name, 420 spa->spa_efi_mem_flags); 421 } 422 if (!nvdimm_SPA_uuid_list[spa_type].u_usr_acc) 423 return (0); 424 425 error1 = pmap_large_map(spa->spa_phys_base, spa->spa_len, 426 &spa->spa_kva, nvdimm_spa_memattr(spa)); 427 if (error1 != 0) { 428 printf("NVDIMM SPA%d cannot map into KVA, error %d\n", 429 spa->spa_nfit_idx, error1); 430 spa->spa_kva = NULL; 431 } 432 433 spa_sg = sglist_alloc(1, M_WAITOK); 434 error = sglist_append_phys(spa_sg, spa->spa_phys_base, 435 spa->spa_len); 436 if (error == 0) { 437 spa->spa_obj = vm_pager_allocate(OBJT_SG, spa_sg, spa->spa_len, 438 VM_PROT_ALL, 0, NULL); 439 if (spa->spa_obj == NULL) { 440 printf("NVDIMM SPA%d failed to alloc vm object", 441 spa->spa_nfit_idx); 442 sglist_free(spa_sg); 443 } 444 } else { 445 printf("NVDIMM SPA%d failed to init sglist, error %d", 446 spa->spa_nfit_idx, error); 447 sglist_free(spa_sg); 448 } 449 450 make_dev_args_init(&mda); 451 mda.mda_flags = MAKEDEV_WAITOK | MAKEDEV_CHECKNAME; 452 mda.mda_devsw = &spa_cdevsw; 453 mda.mda_cr = NULL; 454 mda.mda_uid = UID_ROOT; 455 mda.mda_gid = GID_OPERATOR; 456 mda.mda_mode = 0660; 457 mda.mda_si_drv1 = spa; 458 error = make_dev_s(&mda, &spa->spa_dev, "nvdimm_spa%d", 459 spa->spa_nfit_idx); 460 if (error != 0) { 461 printf("NVDIMM SPA%d cannot create devfs node, error %d\n", 462 spa->spa_nfit_idx, error); 463 if (error1 == 0) 464 error1 = error; 465 } 466 467 bioq_init(&spa->spa_g_queue); 468 mtx_init(&spa->spa_g_mtx, "spag", NULL, MTX_DEF); 469 mtx_init(&spa->spa_g_stat_mtx, "spagst", NULL, MTX_DEF); 470 spa->spa_g_proc_run = true; 471 spa->spa_g_proc_exiting = false; 472 error = kproc_create(nvdimm_spa_g_thread, spa, &spa->spa_g_proc, 0, 0, 473 "g_spa%d", spa->spa_nfit_idx); 474 if (error != 0) { 475 printf("NVDIMM SPA%d cannot create geom worker, error %d\n", 476 spa->spa_nfit_idx, error); 477 if (error1 == 0) 478 error1 = error; 479 } else { 480 g_topology_assert(); 481 spa->spa_g = g_new_geomf(&nvdimm_spa_g_class, "spa%d", 482 spa->spa_nfit_idx); 483 spa->spa_g->softc = spa; 484 spa->spa_p = g_new_providerf(spa->spa_g, "spa%d", 485 spa->spa_nfit_idx); 486 spa->spa_p->mediasize = spa->spa_len; 487 spa->spa_p->sectorsize = DEV_BSIZE; 488 spa->spa_p->flags |= G_PF_DIRECT_SEND | G_PF_DIRECT_RECEIVE | 489 G_PF_ACCEPT_UNMAPPED; 490 g_error_provider(spa->spa_p, 0); 491 spa->spa_g_devstat = devstat_new_entry("spa", spa->spa_nfit_idx, 492 DEV_BSIZE, DEVSTAT_ALL_SUPPORTED, DEVSTAT_TYPE_DIRECT, 493 DEVSTAT_PRIORITY_MAX); 494 } 495 return (error1); 496 } 497 498 static void 499 nvdimm_spa_fini_one(struct SPA_mapping *spa) 500 { 501 502 mtx_lock(&spa->spa_g_mtx); 503 spa->spa_g_proc_run = false; 504 wakeup(&spa->spa_g_queue); 505 while (!spa->spa_g_proc_exiting) 506 msleep(&spa->spa_g_queue, &spa->spa_g_mtx, PRIBIO, "spa_e", 0); 507 mtx_unlock(&spa->spa_g_mtx); 508 if (spa->spa_g != NULL) { 509 g_topology_lock(); 510 g_wither_geom(spa->spa_g, ENXIO); 511 g_topology_unlock(); 512 spa->spa_g = NULL; 513 spa->spa_p = NULL; 514 } 515 if (spa->spa_g_devstat != NULL) { 516 devstat_remove_entry(spa->spa_g_devstat); 517 spa->spa_g_devstat = NULL; 518 } 519 if (spa->spa_dev != NULL) { 520 destroy_dev(spa->spa_dev); 521 spa->spa_dev = NULL; 522 } 523 vm_object_deallocate(spa->spa_obj); 524 if (spa->spa_kva != NULL) { 525 pmap_large_unmap(spa->spa_kva, spa->spa_len); 526 spa->spa_kva = NULL; 527 } 528 mtx_destroy(&spa->spa_g_mtx); 529 mtx_destroy(&spa->spa_g_stat_mtx); 530 } 531 532 static int 533 nvdimm_spa_parse(void *nfitsubtbl, void *arg) 534 { 535 ACPI_NFIT_SYSTEM_ADDRESS *nfitaddr; 536 struct SPA_mapping *spa; 537 int error, *i, j; 538 539 i = arg; 540 spa = &spa_mappings[*i]; 541 nfitaddr = nfitsubtbl; 542 543 for (j = 0; j < nitems(nvdimm_SPA_uuid_list); j++) { 544 /* XXXKIB: is ACPI UUID representation compatible ? */ 545 if (uuidcmp((struct uuid *)&nfitaddr->RangeGuid, 546 &nvdimm_SPA_uuid_list[j].u_id) != 0) 547 continue; 548 error = nvdimm_spa_init_one(spa, nfitaddr, j); 549 if (error != 0) 550 nvdimm_spa_fini_one(spa); 551 break; 552 } 553 if (j == nitems(nvdimm_SPA_uuid_list) && bootverbose) { 554 printf("Unknown SPA UUID %d ", nfitaddr->RangeIndex); 555 printf_uuid((struct uuid *)&nfitaddr->RangeGuid); 556 printf("\n"); 557 } 558 (*i)++; 559 return (0); 560 } 561 562 static int 563 nvdimm_spa_init1(ACPI_TABLE_NFIT *nfitbl) 564 { 565 struct nvdimm_SPA_uuid_list_elm *sle; 566 int error, i; 567 568 for (i = 0; i < nitems(nvdimm_SPA_uuid_list); i++) { 569 sle = &nvdimm_SPA_uuid_list[i]; 570 error = parse_uuid(sle->u_id_str, &sle->u_id); 571 if (error != 0) { 572 if (bootverbose) 573 printf("nvdimm_identify: error %d parsing " 574 "known SPA UUID %d %s\n", error, i, 575 sle->u_id_str); 576 return (error); 577 } 578 } 579 580 error = nvdimm_iterate_nfit(nfitbl, ACPI_NFIT_TYPE_SYSTEM_ADDRESS, 581 nvdimm_spa_count, &spa_mappings_cnt); 582 if (error != 0) 583 return (error); 584 spa_mappings = malloc(sizeof(struct SPA_mapping) * spa_mappings_cnt, 585 M_NVDIMM, M_WAITOK | M_ZERO); 586 i = 0; 587 error = nvdimm_iterate_nfit(nfitbl, ACPI_NFIT_TYPE_SYSTEM_ADDRESS, 588 nvdimm_spa_parse, &i); 589 if (error != 0) { 590 free(spa_mappings, M_NVDIMM); 591 spa_mappings = NULL; 592 return (error); 593 } 594 return (0); 595 } 596 597 static void 598 nvdimm_spa_g_init(struct g_class *mp __unused) 599 { 600 ACPI_TABLE_NFIT *nfitbl; 601 ACPI_STATUS status; 602 int error; 603 604 spa_mappings_cnt = 0; 605 spa_mappings = NULL; 606 if (acpi_disabled("nvdimm")) 607 return; 608 status = AcpiGetTable(ACPI_SIG_NFIT, 1, (ACPI_TABLE_HEADER **)&nfitbl); 609 if (ACPI_FAILURE(status)) { 610 if (bootverbose) 611 printf("nvdimm_spa_g_init: cannot find NFIT\n"); 612 return; 613 } 614 error = nvdimm_spa_init1(nfitbl); 615 if (error != 0) 616 printf("nvdimm_spa_g_init: error %d\n", error); 617 AcpiPutTable(&nfitbl->Header); 618 } 619 620 static void 621 nvdimm_spa_g_fini(struct g_class *mp __unused) 622 { 623 int i; 624 625 if (spa_mappings == NULL) 626 return; 627 for (i = 0; i < spa_mappings_cnt; i++) 628 nvdimm_spa_fini_one(&spa_mappings[i]); 629 free(spa_mappings, M_NVDIMM); 630 spa_mappings = NULL; 631 spa_mappings_cnt = 0; 632 } 633