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 } 634