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 bp->bio_resid = auio.uio_resid; 341 } else { 342 nvdimm_spa_g_all_unmapped(spa, bp, bp->bio_cmd); 343 bp->bio_resid = bp->bio_length; 344 error = 0; 345 } 346 } else { 347 aiovec.iov_base = bp->bio_data; 348 aiovec.iov_len = bp->bio_length; 349 auio.uio_iov = &aiovec; 350 auio.uio_iovcnt = 1; 351 auio.uio_resid = bp->bio_length; 352 auio.uio_offset = bp->bio_offset; 353 auio.uio_segflg = UIO_SYSSPACE; 354 auio.uio_rw = bp->bio_cmd == BIO_READ ? UIO_READ : 355 UIO_WRITE; 356 auio.uio_td = curthread; 357 error = nvdimm_spa_uio(spa, &auio); 358 bp->bio_resid = auio.uio_resid; 359 } 360 bp->bio_bcount = bp->bio_length; 361 devstat_end_transaction_bio(spa->spa_g_devstat, bp); 362 completed: 363 bp->bio_completed = bp->bio_length; 364 g_io_deliver(bp, error); 365 } 366 } 367 368 static void 369 nvdimm_spa_g_start(struct bio *bp) 370 { 371 struct SPA_mapping *spa; 372 373 spa = bp->bio_to->geom->softc; 374 if (bp->bio_cmd == BIO_READ || bp->bio_cmd == BIO_WRITE) { 375 mtx_lock(&spa->spa_g_stat_mtx); 376 devstat_start_transaction_bio(spa->spa_g_devstat, bp); 377 mtx_unlock(&spa->spa_g_stat_mtx); 378 } 379 mtx_lock(&spa->spa_g_mtx); 380 bioq_disksort(&spa->spa_g_queue, bp); 381 wakeup(&spa->spa_g_queue); 382 mtx_unlock(&spa->spa_g_mtx); 383 } 384 385 static int 386 nvdimm_spa_g_access(struct g_provider *pp, int r, int w, int e) 387 { 388 389 return (0); 390 } 391 392 static g_init_t nvdimm_spa_g_init; 393 static g_fini_t nvdimm_spa_g_fini; 394 395 struct g_class nvdimm_spa_g_class = { 396 .name = "SPA", 397 .version = G_VERSION, 398 .start = nvdimm_spa_g_start, 399 .access = nvdimm_spa_g_access, 400 .init = nvdimm_spa_g_init, 401 .fini = nvdimm_spa_g_fini, 402 }; 403 DECLARE_GEOM_CLASS(nvdimm_spa_g_class, g_spa); 404 405 static int 406 nvdimm_spa_init_one(struct SPA_mapping *spa, ACPI_NFIT_SYSTEM_ADDRESS *nfitaddr, 407 int spa_type) 408 { 409 struct make_dev_args mda; 410 struct sglist *spa_sg; 411 int error, error1; 412 413 spa->spa_type = spa_type; 414 spa->spa_domain = ((nfitaddr->Flags & ACPI_NFIT_PROXIMITY_VALID) != 0) ? 415 nfitaddr->ProximityDomain : -1; 416 spa->spa_nfit_idx = nfitaddr->RangeIndex; 417 spa->spa_phys_base = nfitaddr->Address; 418 spa->spa_len = nfitaddr->Length; 419 spa->spa_efi_mem_flags = nfitaddr->MemoryMapping; 420 if (bootverbose) { 421 printf("NVDIMM SPA%d base %#016jx len %#016jx %s fl %#jx\n", 422 spa->spa_nfit_idx, 423 (uintmax_t)spa->spa_phys_base, (uintmax_t)spa->spa_len, 424 nvdimm_SPA_uuid_list[spa_type].u_name, 425 spa->spa_efi_mem_flags); 426 } 427 if (!nvdimm_SPA_uuid_list[spa_type].u_usr_acc) 428 return (0); 429 430 error1 = pmap_large_map(spa->spa_phys_base, spa->spa_len, 431 &spa->spa_kva, nvdimm_spa_memattr(spa)); 432 if (error1 != 0) { 433 printf("NVDIMM SPA%d cannot map into KVA, error %d\n", 434 spa->spa_nfit_idx, error1); 435 spa->spa_kva = NULL; 436 } 437 438 spa_sg = sglist_alloc(1, M_WAITOK); 439 error = sglist_append_phys(spa_sg, spa->spa_phys_base, 440 spa->spa_len); 441 if (error == 0) { 442 spa->spa_obj = vm_pager_allocate(OBJT_SG, spa_sg, spa->spa_len, 443 VM_PROT_ALL, 0, NULL); 444 if (spa->spa_obj == NULL) { 445 printf("NVDIMM SPA%d failed to alloc vm object", 446 spa->spa_nfit_idx); 447 sglist_free(spa_sg); 448 } 449 } else { 450 printf("NVDIMM SPA%d failed to init sglist, error %d", 451 spa->spa_nfit_idx, error); 452 sglist_free(spa_sg); 453 } 454 455 make_dev_args_init(&mda); 456 mda.mda_flags = MAKEDEV_WAITOK | MAKEDEV_CHECKNAME; 457 mda.mda_devsw = &spa_cdevsw; 458 mda.mda_cr = NULL; 459 mda.mda_uid = UID_ROOT; 460 mda.mda_gid = GID_OPERATOR; 461 mda.mda_mode = 0660; 462 mda.mda_si_drv1 = spa; 463 error = make_dev_s(&mda, &spa->spa_dev, "nvdimm_spa%d", 464 spa->spa_nfit_idx); 465 if (error != 0) { 466 printf("NVDIMM SPA%d cannot create devfs node, error %d\n", 467 spa->spa_nfit_idx, error); 468 if (error1 == 0) 469 error1 = error; 470 } 471 472 bioq_init(&spa->spa_g_queue); 473 mtx_init(&spa->spa_g_mtx, "spag", NULL, MTX_DEF); 474 mtx_init(&spa->spa_g_stat_mtx, "spagst", NULL, MTX_DEF); 475 spa->spa_g_proc_run = true; 476 spa->spa_g_proc_exiting = false; 477 error = kproc_create(nvdimm_spa_g_thread, spa, &spa->spa_g_proc, 0, 0, 478 "g_spa%d", spa->spa_nfit_idx); 479 if (error != 0) { 480 printf("NVDIMM SPA%d cannot create geom worker, error %d\n", 481 spa->spa_nfit_idx, error); 482 if (error1 == 0) 483 error1 = error; 484 } else { 485 g_topology_assert(); 486 spa->spa_g = g_new_geomf(&nvdimm_spa_g_class, "spa%d", 487 spa->spa_nfit_idx); 488 spa->spa_g->softc = spa; 489 spa->spa_p = g_new_providerf(spa->spa_g, "spa%d", 490 spa->spa_nfit_idx); 491 spa->spa_p->mediasize = spa->spa_len; 492 spa->spa_p->sectorsize = DEV_BSIZE; 493 spa->spa_p->flags |= G_PF_DIRECT_SEND | G_PF_DIRECT_RECEIVE | 494 G_PF_ACCEPT_UNMAPPED; 495 g_error_provider(spa->spa_p, 0); 496 spa->spa_g_devstat = devstat_new_entry("spa", spa->spa_nfit_idx, 497 DEV_BSIZE, DEVSTAT_ALL_SUPPORTED, DEVSTAT_TYPE_DIRECT, 498 DEVSTAT_PRIORITY_MAX); 499 } 500 return (error1); 501 } 502 503 static void 504 nvdimm_spa_fini_one(struct SPA_mapping *spa) 505 { 506 507 mtx_lock(&spa->spa_g_mtx); 508 spa->spa_g_proc_run = false; 509 wakeup(&spa->spa_g_queue); 510 while (!spa->spa_g_proc_exiting) 511 msleep(&spa->spa_g_queue, &spa->spa_g_mtx, PRIBIO, "spa_e", 0); 512 mtx_unlock(&spa->spa_g_mtx); 513 if (spa->spa_g != NULL) { 514 g_topology_lock(); 515 g_wither_geom(spa->spa_g, ENXIO); 516 g_topology_unlock(); 517 spa->spa_g = NULL; 518 spa->spa_p = NULL; 519 } 520 if (spa->spa_g_devstat != NULL) { 521 devstat_remove_entry(spa->spa_g_devstat); 522 spa->spa_g_devstat = NULL; 523 } 524 if (spa->spa_dev != NULL) { 525 destroy_dev(spa->spa_dev); 526 spa->spa_dev = NULL; 527 } 528 vm_object_deallocate(spa->spa_obj); 529 if (spa->spa_kva != NULL) { 530 pmap_large_unmap(spa->spa_kva, spa->spa_len); 531 spa->spa_kva = NULL; 532 } 533 mtx_destroy(&spa->spa_g_mtx); 534 mtx_destroy(&spa->spa_g_stat_mtx); 535 } 536 537 static int 538 nvdimm_spa_parse(void *nfitsubtbl, void *arg) 539 { 540 ACPI_NFIT_SYSTEM_ADDRESS *nfitaddr; 541 struct SPA_mapping *spa; 542 int error, *i, j; 543 544 i = arg; 545 spa = &spa_mappings[*i]; 546 nfitaddr = nfitsubtbl; 547 548 for (j = 0; j < nitems(nvdimm_SPA_uuid_list); j++) { 549 /* XXXKIB: is ACPI UUID representation compatible ? */ 550 if (uuidcmp((struct uuid *)&nfitaddr->RangeGuid, 551 &nvdimm_SPA_uuid_list[j].u_id) != 0) 552 continue; 553 error = nvdimm_spa_init_one(spa, nfitaddr, j); 554 if (error != 0) 555 nvdimm_spa_fini_one(spa); 556 break; 557 } 558 if (j == nitems(nvdimm_SPA_uuid_list) && bootverbose) { 559 printf("Unknown SPA UUID %d ", nfitaddr->RangeIndex); 560 printf_uuid((struct uuid *)&nfitaddr->RangeGuid); 561 printf("\n"); 562 } 563 (*i)++; 564 return (0); 565 } 566 567 static int 568 nvdimm_spa_init1(ACPI_TABLE_NFIT *nfitbl) 569 { 570 struct nvdimm_SPA_uuid_list_elm *sle; 571 int error, i; 572 573 for (i = 0; i < nitems(nvdimm_SPA_uuid_list); i++) { 574 sle = &nvdimm_SPA_uuid_list[i]; 575 error = parse_uuid(sle->u_id_str, &sle->u_id); 576 if (error != 0) { 577 if (bootverbose) 578 printf("nvdimm_identify: error %d parsing " 579 "known SPA UUID %d %s\n", error, i, 580 sle->u_id_str); 581 return (error); 582 } 583 } 584 585 error = nvdimm_iterate_nfit(nfitbl, ACPI_NFIT_TYPE_SYSTEM_ADDRESS, 586 nvdimm_spa_count, &spa_mappings_cnt); 587 if (error != 0) 588 return (error); 589 spa_mappings = malloc(sizeof(struct SPA_mapping) * spa_mappings_cnt, 590 M_NVDIMM, M_WAITOK | M_ZERO); 591 i = 0; 592 error = nvdimm_iterate_nfit(nfitbl, ACPI_NFIT_TYPE_SYSTEM_ADDRESS, 593 nvdimm_spa_parse, &i); 594 if (error != 0) { 595 free(spa_mappings, M_NVDIMM); 596 spa_mappings = NULL; 597 return (error); 598 } 599 return (0); 600 } 601 602 static void 603 nvdimm_spa_g_init(struct g_class *mp __unused) 604 { 605 ACPI_TABLE_NFIT *nfitbl; 606 ACPI_STATUS status; 607 int error; 608 609 spa_mappings_cnt = 0; 610 spa_mappings = NULL; 611 if (acpi_disabled("nvdimm")) 612 return; 613 status = AcpiGetTable(ACPI_SIG_NFIT, 1, (ACPI_TABLE_HEADER **)&nfitbl); 614 if (ACPI_FAILURE(status)) { 615 if (bootverbose) 616 printf("nvdimm_spa_g_init: cannot find NFIT\n"); 617 return; 618 } 619 error = nvdimm_spa_init1(nfitbl); 620 if (error != 0) 621 printf("nvdimm_spa_g_init: error %d\n", error); 622 AcpiPutTable(&nfitbl->Header); 623 } 624 625 static void 626 nvdimm_spa_g_fini(struct g_class *mp __unused) 627 { 628 int i; 629 630 if (spa_mappings == NULL) 631 return; 632 for (i = 0; i < spa_mappings_cnt; i++) 633 nvdimm_spa_fini_one(&spa_mappings[i]); 634 free(spa_mappings, M_NVDIMM); 635 spa_mappings = NULL; 636 spa_mappings_cnt = 0; 637 } 638