1 /*- 2 * Copyright (c) 2017, 2018 The FreeBSD Foundation 3 * All rights reserved. 4 * Copyright (c) 2018, 2019 Intel Corporation 5 * 6 * This software was developed by Konstantin Belousov <kib@FreeBSD.org> 7 * under sponsorship from the FreeBSD Foundation. 8 * 9 * Redistribution and use in source and binary forms, with or without 10 * modification, are permitted provided that the following conditions 11 * are met: 12 * 1. Redistributions of source code must retain the above copyright 13 * notice, this list of conditions and the following disclaimer. 14 * 2. Redistributions in binary form must reproduce the above copyright 15 * notice, this list of conditions and the following disclaimer in the 16 * documentation and/or other materials provided with the distribution. 17 * 18 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 19 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 20 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 21 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 22 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 23 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 24 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 25 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 26 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 27 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 28 * SUCH DAMAGE. 29 */ 30 31 #include <sys/cdefs.h> 32 __FBSDID("$FreeBSD$"); 33 34 #include "opt_acpi.h" 35 #include "opt_ddb.h" 36 37 #include <sys/param.h> 38 #include <sys/systm.h> 39 #include <sys/bio.h> 40 #include <sys/bus.h> 41 #include <sys/conf.h> 42 #include <sys/devicestat.h> 43 #include <sys/disk.h> 44 #include <sys/efi.h> 45 #include <sys/kernel.h> 46 #include <sys/kthread.h> 47 #include <sys/limits.h> 48 #include <sys/lock.h> 49 #include <sys/malloc.h> 50 #include <sys/module.h> 51 #include <sys/rwlock.h> 52 #include <sys/sglist.h> 53 #include <sys/uio.h> 54 #include <sys/uuid.h> 55 #include <geom/geom.h> 56 #include <geom/geom_int.h> 57 #include <machine/vmparam.h> 58 #include <vm/vm.h> 59 #include <vm/vm_object.h> 60 #include <vm/vm_page.h> 61 #include <vm/vm_pager.h> 62 #include <contrib/dev/acpica/include/acpi.h> 63 #include <contrib/dev/acpica/include/accommon.h> 64 #include <contrib/dev/acpica/include/acuuid.h> 65 #include <dev/acpica/acpivar.h> 66 #include <dev/nvdimm/nvdimm_var.h> 67 68 #define UUID_INITIALIZER_VOLATILE_MEMORY \ 69 {0x7305944f,0xfdda,0x44e3,0xb1,0x6c,{0x3f,0x22,0xd2,0x52,0xe5,0xd0}} 70 #define UUID_INITIALIZER_PERSISTENT_MEMORY \ 71 {0x66f0d379,0xb4f3,0x4074,0xac,0x43,{0x0d,0x33,0x18,0xb7,0x8c,0xdb}} 72 #define UUID_INITIALIZER_CONTROL_REGION \ 73 {0x92f701f6,0x13b4,0x405d,0x91,0x0b,{0x29,0x93,0x67,0xe8,0x23,0x4c}} 74 #define UUID_INITIALIZER_DATA_REGION \ 75 {0x91af0530,0x5d86,0x470e,0xa6,0xb0,{0x0a,0x2d,0xb9,0x40,0x82,0x49}} 76 #define UUID_INITIALIZER_VOLATILE_VIRTUAL_DISK \ 77 {0x77ab535a,0x45fc,0x624b,0x55,0x60,{0xf7,0xb2,0x81,0xd1,0xf9,0x6e}} 78 #define UUID_INITIALIZER_VOLATILE_VIRTUAL_CD \ 79 {0x3d5abd30,0x4175,0x87ce,0x6d,0x64,{0xd2,0xad,0xe5,0x23,0xc4,0xbb}} 80 #define UUID_INITIALIZER_PERSISTENT_VIRTUAL_DISK \ 81 {0x5cea02c9,0x4d07,0x69d3,0x26,0x9f,{0x44,0x96,0xfb,0xe0,0x96,0xf9}} 82 #define UUID_INITIALIZER_PERSISTENT_VIRTUAL_CD \ 83 {0x08018188,0x42cd,0xbb48,0x10,0x0f,{0x53,0x87,0xd5,0x3d,0xed,0x3d}} 84 85 struct SPA_mapping *spa_mappings; 86 int spa_mappings_cnt; 87 88 static int 89 nvdimm_spa_count(void *nfitsubtbl __unused, void *arg) 90 { 91 int *cnt; 92 93 cnt = arg; 94 (*cnt)++; 95 return (0); 96 } 97 98 static struct nvdimm_SPA_uuid_list_elm { 99 const char *u_name; 100 struct uuid u_id; 101 const bool u_usr_acc; 102 } nvdimm_SPA_uuid_list[] = { 103 [SPA_TYPE_VOLATILE_MEMORY] = { 104 .u_name = "VOLA MEM ", 105 .u_id = UUID_INITIALIZER_VOLATILE_MEMORY, 106 .u_usr_acc = true, 107 }, 108 [SPA_TYPE_PERSISTENT_MEMORY] = { 109 .u_name = "PERS MEM", 110 .u_id = UUID_INITIALIZER_PERSISTENT_MEMORY, 111 .u_usr_acc = true, 112 }, 113 [SPA_TYPE_CONTROL_REGION] = { 114 .u_name = "CTRL RG ", 115 .u_id = UUID_INITIALIZER_CONTROL_REGION, 116 .u_usr_acc = false, 117 }, 118 [SPA_TYPE_DATA_REGION] = { 119 .u_name = "DATA RG ", 120 .u_id = UUID_INITIALIZER_DATA_REGION, 121 .u_usr_acc = true, 122 }, 123 [SPA_TYPE_VOLATILE_VIRTUAL_DISK] = { 124 .u_name = "VIRT DSK", 125 .u_id = UUID_INITIALIZER_VOLATILE_VIRTUAL_DISK, 126 .u_usr_acc = true, 127 }, 128 [SPA_TYPE_VOLATILE_VIRTUAL_CD] = { 129 .u_name = "VIRT CD ", 130 .u_id = UUID_INITIALIZER_VOLATILE_VIRTUAL_CD, 131 .u_usr_acc = true, 132 }, 133 [SPA_TYPE_PERSISTENT_VIRTUAL_DISK] = { 134 .u_name = "PV DSK ", 135 .u_id = UUID_INITIALIZER_PERSISTENT_VIRTUAL_DISK, 136 .u_usr_acc = true, 137 }, 138 [SPA_TYPE_PERSISTENT_VIRTUAL_CD] = { 139 .u_name = "PV CD ", 140 .u_id = UUID_INITIALIZER_PERSISTENT_VIRTUAL_CD, 141 .u_usr_acc = true, 142 }, 143 }; 144 145 enum SPA_mapping_type 146 nvdimm_spa_type_from_uuid(struct uuid *uuid) 147 { 148 int j; 149 150 for (j = 0; j < nitems(nvdimm_SPA_uuid_list); j++) { 151 if (uuidcmp(uuid, &nvdimm_SPA_uuid_list[j].u_id) != 0) 152 continue; 153 return (j); 154 } 155 return (SPA_TYPE_UNKNOWN); 156 } 157 158 static vm_memattr_t 159 nvdimm_spa_memattr(struct SPA_mapping *spa) 160 { 161 vm_memattr_t mode; 162 163 if ((spa->spa_efi_mem_flags & EFI_MD_ATTR_WB) != 0) 164 mode = VM_MEMATTR_WRITE_BACK; 165 else if ((spa->spa_efi_mem_flags & EFI_MD_ATTR_WT) != 0) 166 mode = VM_MEMATTR_WRITE_THROUGH; 167 else if ((spa->spa_efi_mem_flags & EFI_MD_ATTR_WC) != 0) 168 mode = VM_MEMATTR_WRITE_COMBINING; 169 else if ((spa->spa_efi_mem_flags & EFI_MD_ATTR_WP) != 0) 170 mode = VM_MEMATTR_WRITE_PROTECTED; 171 else if ((spa->spa_efi_mem_flags & EFI_MD_ATTR_UC) != 0) 172 mode = VM_MEMATTR_UNCACHEABLE; 173 else { 174 if (bootverbose) 175 printf("SPA%d mapping attr unsupported\n", 176 spa->spa_nfit_idx); 177 mode = VM_MEMATTR_UNCACHEABLE; 178 } 179 return (mode); 180 } 181 182 static int 183 nvdimm_spa_uio(struct SPA_mapping *spa, struct uio *uio) 184 { 185 struct vm_page m, *ma; 186 off_t off; 187 vm_memattr_t mattr; 188 int error, n; 189 190 error = 0; 191 if (spa->spa_kva == NULL) { 192 mattr = nvdimm_spa_memattr(spa); 193 vm_page_initfake(&m, 0, mattr); 194 ma = &m; 195 while (uio->uio_resid > 0) { 196 if (uio->uio_offset >= spa->spa_len) 197 break; 198 off = spa->spa_phys_base + uio->uio_offset; 199 vm_page_updatefake(&m, trunc_page(off), mattr); 200 n = PAGE_SIZE; 201 if (n > uio->uio_resid) 202 n = uio->uio_resid; 203 error = uiomove_fromphys(&ma, off & PAGE_MASK, n, uio); 204 if (error != 0) 205 break; 206 } 207 } else { 208 while (uio->uio_resid > 0) { 209 if (uio->uio_offset >= spa->spa_len) 210 break; 211 n = INT_MAX; 212 if (n > uio->uio_resid) 213 n = uio->uio_resid; 214 if (uio->uio_offset + n > spa->spa_len) 215 n = spa->spa_len - uio->uio_offset; 216 error = uiomove((char *)spa->spa_kva + uio->uio_offset, 217 n, uio); 218 if (error != 0) 219 break; 220 } 221 } 222 return (error); 223 } 224 225 static int 226 nvdimm_spa_rw(struct cdev *dev, struct uio *uio, int ioflag) 227 { 228 229 return (nvdimm_spa_uio(dev->si_drv1, uio)); 230 } 231 232 static int 233 nvdimm_spa_ioctl(struct cdev *dev, u_long cmd, caddr_t data, int fflag, 234 struct thread *td) 235 { 236 struct SPA_mapping *spa; 237 int error; 238 239 spa = dev->si_drv1; 240 error = 0; 241 switch (cmd) { 242 case DIOCGSECTORSIZE: 243 *(u_int *)data = DEV_BSIZE; 244 break; 245 case DIOCGMEDIASIZE: 246 *(off_t *)data = spa->spa_len; 247 break; 248 default: 249 error = ENOTTY; 250 break; 251 } 252 return (error); 253 } 254 255 static int 256 nvdimm_spa_mmap_single(struct cdev *dev, vm_ooffset_t *offset, vm_size_t size, 257 vm_object_t *objp, int nprot) 258 { 259 struct SPA_mapping *spa; 260 261 spa = dev->si_drv1; 262 if (spa->spa_obj == NULL) 263 return (ENXIO); 264 if (*offset >= spa->spa_len || *offset + size < *offset || 265 *offset + size > spa->spa_len) 266 return (EINVAL); 267 vm_object_reference(spa->spa_obj); 268 *objp = spa->spa_obj; 269 return (0); 270 } 271 272 static struct cdevsw spa_cdevsw = { 273 .d_version = D_VERSION, 274 .d_flags = D_DISK, 275 .d_name = "nvdimm_spa", 276 .d_read = nvdimm_spa_rw, 277 .d_write = nvdimm_spa_rw, 278 .d_ioctl = nvdimm_spa_ioctl, 279 .d_mmap_single = nvdimm_spa_mmap_single, 280 }; 281 282 static void 283 nvdimm_spa_g_all_unmapped(struct SPA_mapping *spa, struct bio *bp, 284 int rw) 285 { 286 struct vm_page maa[bp->bio_ma_n]; 287 vm_page_t ma[bp->bio_ma_n]; 288 vm_memattr_t mattr; 289 int i; 290 291 mattr = nvdimm_spa_memattr(spa); 292 for (i = 0; i < nitems(ma); i++) { 293 maa[i].flags = 0; 294 vm_page_initfake(&maa[i], spa->spa_phys_base + 295 trunc_page(bp->bio_offset) + PAGE_SIZE * i, mattr); 296 ma[i] = &maa[i]; 297 } 298 if (rw == BIO_READ) 299 pmap_copy_pages(ma, bp->bio_offset & PAGE_MASK, bp->bio_ma, 300 bp->bio_ma_offset, bp->bio_length); 301 else 302 pmap_copy_pages(bp->bio_ma, bp->bio_ma_offset, ma, 303 bp->bio_offset & PAGE_MASK, bp->bio_length); 304 } 305 306 static void 307 nvdimm_spa_g_thread(void *arg) 308 { 309 struct SPA_mapping *spa; 310 struct bio *bp; 311 struct uio auio; 312 struct iovec aiovec; 313 int error; 314 315 spa = arg; 316 for (;;) { 317 mtx_lock(&spa->spa_g_mtx); 318 for (;;) { 319 bp = bioq_takefirst(&spa->spa_g_queue); 320 if (bp != NULL) 321 break; 322 msleep(&spa->spa_g_queue, &spa->spa_g_mtx, PRIBIO, 323 "spa_g", 0); 324 if (!spa->spa_g_proc_run) { 325 spa->spa_g_proc_exiting = true; 326 wakeup(&spa->spa_g_queue); 327 mtx_unlock(&spa->spa_g_mtx); 328 kproc_exit(0); 329 } 330 continue; 331 } 332 mtx_unlock(&spa->spa_g_mtx); 333 if (bp->bio_cmd != BIO_READ && bp->bio_cmd != BIO_WRITE && 334 bp->bio_cmd != BIO_FLUSH) { 335 error = EOPNOTSUPP; 336 goto completed; 337 } 338 339 error = 0; 340 if (bp->bio_cmd == BIO_FLUSH) { 341 if (spa->spa_kva != NULL) { 342 pmap_large_map_wb(spa->spa_kva, spa->spa_len); 343 } else { 344 pmap_flush_cache_phys_range( 345 (vm_paddr_t)spa->spa_phys_base, 346 (vm_paddr_t)spa->spa_phys_base + 347 spa->spa_len, nvdimm_spa_memattr(spa)); 348 } 349 /* 350 * XXX flush IMC 351 */ 352 goto completed; 353 } 354 355 if ((bp->bio_flags & BIO_UNMAPPED) != 0) { 356 if (spa->spa_kva != NULL) { 357 aiovec.iov_base = (char *)spa->spa_kva + 358 bp->bio_offset; 359 aiovec.iov_len = bp->bio_length; 360 auio.uio_iov = &aiovec; 361 auio.uio_iovcnt = 1; 362 auio.uio_resid = bp->bio_length; 363 auio.uio_offset = bp->bio_offset; 364 auio.uio_segflg = UIO_SYSSPACE; 365 auio.uio_rw = bp->bio_cmd == BIO_READ ? 366 UIO_WRITE : UIO_READ; 367 auio.uio_td = curthread; 368 error = uiomove_fromphys(bp->bio_ma, 369 bp->bio_ma_offset, bp->bio_length, &auio); 370 bp->bio_resid = auio.uio_resid; 371 } else { 372 nvdimm_spa_g_all_unmapped(spa, bp, bp->bio_cmd); 373 bp->bio_resid = bp->bio_length; 374 error = 0; 375 } 376 } else { 377 aiovec.iov_base = bp->bio_data; 378 aiovec.iov_len = bp->bio_length; 379 auio.uio_iov = &aiovec; 380 auio.uio_iovcnt = 1; 381 auio.uio_resid = bp->bio_length; 382 auio.uio_offset = bp->bio_offset; 383 auio.uio_segflg = UIO_SYSSPACE; 384 auio.uio_rw = bp->bio_cmd == BIO_READ ? UIO_READ : 385 UIO_WRITE; 386 auio.uio_td = curthread; 387 error = nvdimm_spa_uio(spa, &auio); 388 bp->bio_resid = auio.uio_resid; 389 } 390 bp->bio_bcount = bp->bio_length; 391 devstat_end_transaction_bio(spa->spa_g_devstat, bp); 392 completed: 393 bp->bio_completed = bp->bio_length; 394 g_io_deliver(bp, error); 395 } 396 } 397 398 static void 399 nvdimm_spa_g_start(struct bio *bp) 400 { 401 struct SPA_mapping *spa; 402 403 spa = bp->bio_to->geom->softc; 404 if (bp->bio_cmd == BIO_READ || bp->bio_cmd == BIO_WRITE) { 405 mtx_lock(&spa->spa_g_stat_mtx); 406 devstat_start_transaction_bio(spa->spa_g_devstat, bp); 407 mtx_unlock(&spa->spa_g_stat_mtx); 408 } 409 mtx_lock(&spa->spa_g_mtx); 410 bioq_disksort(&spa->spa_g_queue, bp); 411 wakeup(&spa->spa_g_queue); 412 mtx_unlock(&spa->spa_g_mtx); 413 } 414 415 static int 416 nvdimm_spa_g_access(struct g_provider *pp, int r, int w, int e) 417 { 418 419 return (0); 420 } 421 422 static g_init_t nvdimm_spa_g_init; 423 static g_fini_t nvdimm_spa_g_fini; 424 425 struct g_class nvdimm_spa_g_class = { 426 .name = "SPA", 427 .version = G_VERSION, 428 .start = nvdimm_spa_g_start, 429 .access = nvdimm_spa_g_access, 430 .init = nvdimm_spa_g_init, 431 .fini = nvdimm_spa_g_fini, 432 }; 433 DECLARE_GEOM_CLASS(nvdimm_spa_g_class, g_spa); 434 435 static int 436 nvdimm_spa_init_one(struct SPA_mapping *spa, ACPI_NFIT_SYSTEM_ADDRESS *nfitaddr, 437 int spa_type) 438 { 439 struct make_dev_args mda; 440 struct sglist *spa_sg; 441 int error, error1; 442 443 spa->spa_type = spa_type; 444 spa->spa_domain = ((nfitaddr->Flags & ACPI_NFIT_PROXIMITY_VALID) != 0) ? 445 nfitaddr->ProximityDomain : -1; 446 spa->spa_nfit_idx = nfitaddr->RangeIndex; 447 spa->spa_phys_base = nfitaddr->Address; 448 spa->spa_len = nfitaddr->Length; 449 spa->spa_efi_mem_flags = nfitaddr->MemoryMapping; 450 if (bootverbose) { 451 printf("NVDIMM SPA%d base %#016jx len %#016jx %s fl %#jx\n", 452 spa->spa_nfit_idx, 453 (uintmax_t)spa->spa_phys_base, (uintmax_t)spa->spa_len, 454 nvdimm_SPA_uuid_list[spa_type].u_name, 455 spa->spa_efi_mem_flags); 456 } 457 if (!nvdimm_SPA_uuid_list[spa_type].u_usr_acc) 458 return (0); 459 460 error1 = pmap_large_map(spa->spa_phys_base, spa->spa_len, 461 &spa->spa_kva, nvdimm_spa_memattr(spa)); 462 if (error1 != 0) { 463 printf("NVDIMM SPA%d cannot map into KVA, error %d\n", 464 spa->spa_nfit_idx, error1); 465 spa->spa_kva = NULL; 466 } 467 468 spa_sg = sglist_alloc(1, M_WAITOK); 469 error = sglist_append_phys(spa_sg, spa->spa_phys_base, 470 spa->spa_len); 471 if (error == 0) { 472 spa->spa_obj = vm_pager_allocate(OBJT_SG, spa_sg, spa->spa_len, 473 VM_PROT_ALL, 0, NULL); 474 if (spa->spa_obj == NULL) { 475 printf("NVDIMM SPA%d failed to alloc vm object", 476 spa->spa_nfit_idx); 477 sglist_free(spa_sg); 478 } 479 } else { 480 printf("NVDIMM SPA%d failed to init sglist, error %d", 481 spa->spa_nfit_idx, error); 482 sglist_free(spa_sg); 483 } 484 485 make_dev_args_init(&mda); 486 mda.mda_flags = MAKEDEV_WAITOK | MAKEDEV_CHECKNAME; 487 mda.mda_devsw = &spa_cdevsw; 488 mda.mda_cr = NULL; 489 mda.mda_uid = UID_ROOT; 490 mda.mda_gid = GID_OPERATOR; 491 mda.mda_mode = 0660; 492 mda.mda_si_drv1 = spa; 493 error = make_dev_s(&mda, &spa->spa_dev, "nvdimm_spa%d", 494 spa->spa_nfit_idx); 495 if (error != 0) { 496 printf("NVDIMM SPA%d cannot create devfs node, error %d\n", 497 spa->spa_nfit_idx, error); 498 if (error1 == 0) 499 error1 = error; 500 } 501 502 bioq_init(&spa->spa_g_queue); 503 mtx_init(&spa->spa_g_mtx, "spag", NULL, MTX_DEF); 504 mtx_init(&spa->spa_g_stat_mtx, "spagst", NULL, MTX_DEF); 505 spa->spa_g_proc_run = true; 506 spa->spa_g_proc_exiting = false; 507 error = kproc_create(nvdimm_spa_g_thread, spa, &spa->spa_g_proc, 0, 0, 508 "g_spa%d", spa->spa_nfit_idx); 509 if (error != 0) { 510 printf("NVDIMM SPA%d cannot create geom worker, error %d\n", 511 spa->spa_nfit_idx, error); 512 if (error1 == 0) 513 error1 = error; 514 } else { 515 g_topology_assert(); 516 spa->spa_g = g_new_geomf(&nvdimm_spa_g_class, "spa%d", 517 spa->spa_nfit_idx); 518 spa->spa_g->softc = spa; 519 spa->spa_p = g_new_providerf(spa->spa_g, "spa%d", 520 spa->spa_nfit_idx); 521 spa->spa_p->mediasize = spa->spa_len; 522 spa->spa_p->sectorsize = DEV_BSIZE; 523 spa->spa_p->flags |= G_PF_DIRECT_SEND | G_PF_DIRECT_RECEIVE | 524 G_PF_ACCEPT_UNMAPPED; 525 g_error_provider(spa->spa_p, 0); 526 spa->spa_g_devstat = devstat_new_entry("spa", spa->spa_nfit_idx, 527 DEV_BSIZE, DEVSTAT_ALL_SUPPORTED, DEVSTAT_TYPE_DIRECT, 528 DEVSTAT_PRIORITY_MAX); 529 } 530 return (error1); 531 } 532 533 static void 534 nvdimm_spa_fini_one(struct SPA_mapping *spa) 535 { 536 537 mtx_lock(&spa->spa_g_mtx); 538 spa->spa_g_proc_run = false; 539 wakeup(&spa->spa_g_queue); 540 while (!spa->spa_g_proc_exiting) 541 msleep(&spa->spa_g_queue, &spa->spa_g_mtx, PRIBIO, "spa_e", 0); 542 mtx_unlock(&spa->spa_g_mtx); 543 if (spa->spa_g != NULL) { 544 g_topology_lock(); 545 g_wither_geom(spa->spa_g, ENXIO); 546 g_topology_unlock(); 547 spa->spa_g = NULL; 548 spa->spa_p = NULL; 549 } 550 if (spa->spa_g_devstat != NULL) { 551 devstat_remove_entry(spa->spa_g_devstat); 552 spa->spa_g_devstat = NULL; 553 } 554 if (spa->spa_dev != NULL) { 555 destroy_dev(spa->spa_dev); 556 spa->spa_dev = NULL; 557 } 558 vm_object_deallocate(spa->spa_obj); 559 if (spa->spa_kva != NULL) { 560 pmap_large_unmap(spa->spa_kva, spa->spa_len); 561 spa->spa_kva = NULL; 562 } 563 mtx_destroy(&spa->spa_g_mtx); 564 mtx_destroy(&spa->spa_g_stat_mtx); 565 } 566 567 static int 568 nvdimm_spa_parse(void *nfitsubtbl, void *arg) 569 { 570 ACPI_NFIT_SYSTEM_ADDRESS *nfitaddr; 571 struct SPA_mapping *spa; 572 enum SPA_mapping_type spa_type; 573 int error, *i; 574 575 i = arg; 576 spa = &spa_mappings[(*i)++]; 577 nfitaddr = nfitsubtbl; 578 spa_type = nvdimm_spa_type_from_uuid( 579 (struct uuid *)&nfitaddr->RangeGuid); 580 if (spa_type == SPA_TYPE_UNKNOWN) { 581 printf("Unknown SPA UUID %d ", nfitaddr->RangeIndex); 582 printf_uuid((struct uuid *)&nfitaddr->RangeGuid); 583 printf("\n"); 584 return (0); 585 } 586 error = nvdimm_spa_init_one(spa, nfitaddr, spa_type); 587 if (error != 0) 588 nvdimm_spa_fini_one(spa); 589 return (0); 590 } 591 592 static int 593 nvdimm_spa_init1(ACPI_TABLE_NFIT *nfitbl) 594 { 595 int error, i; 596 597 error = nvdimm_iterate_nfit(nfitbl, ACPI_NFIT_TYPE_SYSTEM_ADDRESS, 598 nvdimm_spa_count, &spa_mappings_cnt); 599 if (error != 0) 600 return (error); 601 spa_mappings = malloc(sizeof(struct SPA_mapping) * spa_mappings_cnt, 602 M_NVDIMM, M_WAITOK | M_ZERO); 603 i = 0; 604 error = nvdimm_iterate_nfit(nfitbl, ACPI_NFIT_TYPE_SYSTEM_ADDRESS, 605 nvdimm_spa_parse, &i); 606 if (error != 0) { 607 free(spa_mappings, M_NVDIMM); 608 spa_mappings = NULL; 609 return (error); 610 } 611 return (0); 612 } 613 614 static void 615 nvdimm_spa_g_init(struct g_class *mp __unused) 616 { 617 ACPI_TABLE_NFIT *nfitbl; 618 ACPI_STATUS status; 619 int error; 620 621 spa_mappings_cnt = 0; 622 spa_mappings = NULL; 623 if (acpi_disabled("nvdimm")) 624 return; 625 status = AcpiGetTable(ACPI_SIG_NFIT, 1, (ACPI_TABLE_HEADER **)&nfitbl); 626 if (ACPI_FAILURE(status)) { 627 if (bootverbose) 628 printf("nvdimm_spa_g_init: cannot find NFIT\n"); 629 return; 630 } 631 error = nvdimm_spa_init1(nfitbl); 632 if (error != 0) 633 printf("nvdimm_spa_g_init: error %d\n", error); 634 AcpiPutTable(&nfitbl->Header); 635 } 636 637 static void 638 nvdimm_spa_g_fini(struct g_class *mp __unused) 639 { 640 int i; 641 642 if (spa_mappings == NULL) 643 return; 644 for (i = 0; i < spa_mappings_cnt; i++) 645 nvdimm_spa_fini_one(&spa_mappings[i]); 646 free(spa_mappings, M_NVDIMM); 647 spa_mappings = NULL; 648 spa_mappings_cnt = 0; 649 } 650