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 static struct nvdimm_SPA_uuid_list_elm { 86 const char *u_name; 87 struct uuid u_id; 88 const bool u_usr_acc; 89 } nvdimm_SPA_uuid_list[] = { 90 [SPA_TYPE_VOLATILE_MEMORY] = { 91 .u_name = "VOLA MEM ", 92 .u_id = UUID_INITIALIZER_VOLATILE_MEMORY, 93 .u_usr_acc = true, 94 }, 95 [SPA_TYPE_PERSISTENT_MEMORY] = { 96 .u_name = "PERS MEM", 97 .u_id = UUID_INITIALIZER_PERSISTENT_MEMORY, 98 .u_usr_acc = true, 99 }, 100 [SPA_TYPE_CONTROL_REGION] = { 101 .u_name = "CTRL RG ", 102 .u_id = UUID_INITIALIZER_CONTROL_REGION, 103 .u_usr_acc = false, 104 }, 105 [SPA_TYPE_DATA_REGION] = { 106 .u_name = "DATA RG ", 107 .u_id = UUID_INITIALIZER_DATA_REGION, 108 .u_usr_acc = true, 109 }, 110 [SPA_TYPE_VOLATILE_VIRTUAL_DISK] = { 111 .u_name = "VIRT DSK", 112 .u_id = UUID_INITIALIZER_VOLATILE_VIRTUAL_DISK, 113 .u_usr_acc = true, 114 }, 115 [SPA_TYPE_VOLATILE_VIRTUAL_CD] = { 116 .u_name = "VIRT CD ", 117 .u_id = UUID_INITIALIZER_VOLATILE_VIRTUAL_CD, 118 .u_usr_acc = true, 119 }, 120 [SPA_TYPE_PERSISTENT_VIRTUAL_DISK] = { 121 .u_name = "PV DSK ", 122 .u_id = UUID_INITIALIZER_PERSISTENT_VIRTUAL_DISK, 123 .u_usr_acc = true, 124 }, 125 [SPA_TYPE_PERSISTENT_VIRTUAL_CD] = { 126 .u_name = "PV CD ", 127 .u_id = UUID_INITIALIZER_PERSISTENT_VIRTUAL_CD, 128 .u_usr_acc = true, 129 }, 130 }; 131 132 enum SPA_mapping_type 133 nvdimm_spa_type_from_name(const char *name) 134 { 135 int j; 136 137 for (j = 0; j < nitems(nvdimm_SPA_uuid_list); j++) { 138 if (strcmp(name, nvdimm_SPA_uuid_list[j].u_name) != 0) 139 continue; 140 return (j); 141 } 142 return (SPA_TYPE_UNKNOWN); 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 nvdimm_spa_dev *dev) 160 { 161 vm_memattr_t mode; 162 163 if ((dev->spa_efi_mem_flags & EFI_MD_ATTR_WB) != 0) 164 mode = VM_MEMATTR_WRITE_BACK; 165 else if ((dev->spa_efi_mem_flags & EFI_MD_ATTR_WT) != 0) 166 mode = VM_MEMATTR_WRITE_THROUGH; 167 else if ((dev->spa_efi_mem_flags & EFI_MD_ATTR_WC) != 0) 168 mode = VM_MEMATTR_WRITE_COMBINING; 169 else if ((dev->spa_efi_mem_flags & EFI_MD_ATTR_WP) != 0) 170 mode = VM_MEMATTR_WRITE_PROTECTED; 171 else if ((dev->spa_efi_mem_flags & EFI_MD_ATTR_UC) != 0) 172 mode = VM_MEMATTR_UNCACHEABLE; 173 else { 174 if (bootverbose) 175 printf("SPA mapping attr %#lx unsupported\n", 176 dev->spa_efi_mem_flags); 177 mode = VM_MEMATTR_UNCACHEABLE; 178 } 179 return (mode); 180 } 181 182 static int 183 nvdimm_spa_uio(struct nvdimm_spa_dev *dev, 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 (dev->spa_kva == NULL) { 192 mattr = nvdimm_spa_memattr(dev); 193 bzero(&m, sizeof(m)); 194 vm_page_initfake(&m, 0, mattr); 195 ma = &m; 196 while (uio->uio_resid > 0) { 197 if (uio->uio_offset >= dev->spa_len) 198 break; 199 off = dev->spa_phys_base + uio->uio_offset; 200 vm_page_updatefake(&m, trunc_page(off), mattr); 201 n = PAGE_SIZE; 202 if (n > uio->uio_resid) 203 n = uio->uio_resid; 204 error = uiomove_fromphys(&ma, off & PAGE_MASK, n, uio); 205 if (error != 0) 206 break; 207 } 208 } else { 209 while (uio->uio_resid > 0) { 210 if (uio->uio_offset >= dev->spa_len) 211 break; 212 n = INT_MAX; 213 if (n > uio->uio_resid) 214 n = uio->uio_resid; 215 if (uio->uio_offset + n > dev->spa_len) 216 n = dev->spa_len - uio->uio_offset; 217 error = uiomove((char *)dev->spa_kva + uio->uio_offset, 218 n, uio); 219 if (error != 0) 220 break; 221 } 222 } 223 return (error); 224 } 225 226 static int 227 nvdimm_spa_rw(struct cdev *dev, struct uio *uio, int ioflag) 228 { 229 230 return (nvdimm_spa_uio(dev->si_drv1, uio)); 231 } 232 233 static int 234 nvdimm_spa_ioctl(struct cdev *cdev, u_long cmd, caddr_t data, int fflag, 235 struct thread *td) 236 { 237 struct nvdimm_spa_dev *dev; 238 int error; 239 240 dev = cdev->si_drv1; 241 error = 0; 242 switch (cmd) { 243 case DIOCGSECTORSIZE: 244 *(u_int *)data = DEV_BSIZE; 245 break; 246 case DIOCGMEDIASIZE: 247 *(off_t *)data = dev->spa_len; 248 break; 249 default: 250 error = ENOTTY; 251 break; 252 } 253 return (error); 254 } 255 256 static int 257 nvdimm_spa_mmap_single(struct cdev *cdev, vm_ooffset_t *offset, vm_size_t size, 258 vm_object_t *objp, int nprot) 259 { 260 struct nvdimm_spa_dev *dev; 261 262 dev = cdev->si_drv1; 263 if (dev->spa_obj == NULL) 264 return (ENXIO); 265 if (*offset >= dev->spa_len || *offset + size < *offset || 266 *offset + size > dev->spa_len) 267 return (EINVAL); 268 vm_object_reference(dev->spa_obj); 269 *objp = dev->spa_obj; 270 return (0); 271 } 272 273 static struct cdevsw spa_cdevsw = { 274 .d_version = D_VERSION, 275 .d_flags = D_DISK, 276 .d_name = "nvdimm_spa", 277 .d_read = nvdimm_spa_rw, 278 .d_write = nvdimm_spa_rw, 279 .d_ioctl = nvdimm_spa_ioctl, 280 .d_mmap_single = nvdimm_spa_mmap_single, 281 }; 282 283 static void 284 nvdimm_spa_g_all_unmapped(struct nvdimm_spa_dev *dev, struct bio *bp, 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(dev); 292 for (i = 0; i < nitems(ma); i++) { 293 bzero(&maa[i], sizeof(maa[i])); 294 vm_page_initfake(&maa[i], dev->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 g_spa *sc; 310 struct bio *bp; 311 struct uio auio; 312 struct iovec aiovec; 313 int error; 314 315 sc = arg; 316 for (;;) { 317 mtx_lock(&sc->spa_g_mtx); 318 for (;;) { 319 bp = bioq_takefirst(&sc->spa_g_queue); 320 if (bp != NULL) 321 break; 322 msleep(&sc->spa_g_queue, &sc->spa_g_mtx, PRIBIO, 323 "spa_g", 0); 324 if (!sc->spa_g_proc_run) { 325 sc->spa_g_proc_exiting = true; 326 wakeup(&sc->spa_g_queue); 327 mtx_unlock(&sc->spa_g_mtx); 328 kproc_exit(0); 329 } 330 continue; 331 } 332 mtx_unlock(&sc->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 (sc->dev->spa_kva != NULL) { 342 pmap_large_map_wb(sc->dev->spa_kva, 343 sc->dev->spa_len); 344 } else { 345 pmap_flush_cache_phys_range( 346 (vm_paddr_t)sc->dev->spa_phys_base, 347 (vm_paddr_t)sc->dev->spa_phys_base + 348 sc->dev->spa_len, 349 nvdimm_spa_memattr(sc->dev)); 350 } 351 /* 352 * XXX flush IMC 353 */ 354 goto completed; 355 } 356 357 if ((bp->bio_flags & BIO_UNMAPPED) != 0) { 358 if (sc->dev->spa_kva != NULL) { 359 aiovec.iov_base = (char *)sc->dev->spa_kva + 360 bp->bio_offset; 361 aiovec.iov_len = bp->bio_length; 362 auio.uio_iov = &aiovec; 363 auio.uio_iovcnt = 1; 364 auio.uio_resid = bp->bio_length; 365 auio.uio_offset = bp->bio_offset; 366 auio.uio_segflg = UIO_SYSSPACE; 367 auio.uio_rw = bp->bio_cmd == BIO_READ ? 368 UIO_WRITE : UIO_READ; 369 auio.uio_td = curthread; 370 error = uiomove_fromphys(bp->bio_ma, 371 bp->bio_ma_offset, bp->bio_length, &auio); 372 bp->bio_resid = auio.uio_resid; 373 } else { 374 nvdimm_spa_g_all_unmapped(sc->dev, bp, 375 bp->bio_cmd); 376 bp->bio_resid = bp->bio_length; 377 error = 0; 378 } 379 } else { 380 aiovec.iov_base = bp->bio_data; 381 aiovec.iov_len = bp->bio_length; 382 auio.uio_iov = &aiovec; 383 auio.uio_iovcnt = 1; 384 auio.uio_resid = bp->bio_length; 385 auio.uio_offset = bp->bio_offset; 386 auio.uio_segflg = UIO_SYSSPACE; 387 auio.uio_rw = bp->bio_cmd == BIO_READ ? UIO_READ : 388 UIO_WRITE; 389 auio.uio_td = curthread; 390 error = nvdimm_spa_uio(sc->dev, &auio); 391 bp->bio_resid = auio.uio_resid; 392 } 393 bp->bio_bcount = bp->bio_length; 394 devstat_end_transaction_bio(sc->spa_g_devstat, bp); 395 completed: 396 bp->bio_completed = bp->bio_length; 397 g_io_deliver(bp, error); 398 } 399 } 400 401 static void 402 nvdimm_spa_g_start(struct bio *bp) 403 { 404 struct g_spa *sc; 405 406 sc = bp->bio_to->geom->softc; 407 if (bp->bio_cmd == BIO_READ || bp->bio_cmd == BIO_WRITE) { 408 mtx_lock(&sc->spa_g_stat_mtx); 409 devstat_start_transaction_bio(sc->spa_g_devstat, bp); 410 mtx_unlock(&sc->spa_g_stat_mtx); 411 } 412 mtx_lock(&sc->spa_g_mtx); 413 bioq_disksort(&sc->spa_g_queue, bp); 414 wakeup(&sc->spa_g_queue); 415 mtx_unlock(&sc->spa_g_mtx); 416 } 417 418 static int 419 nvdimm_spa_g_access(struct g_provider *pp, int r, int w, int e) 420 { 421 422 return (0); 423 } 424 425 static struct g_geom * nvdimm_spa_g_create(struct nvdimm_spa_dev *dev, 426 const char *name); 427 static g_ctl_destroy_geom_t nvdimm_spa_g_destroy_geom; 428 429 struct g_class nvdimm_spa_g_class = { 430 .name = "SPA", 431 .version = G_VERSION, 432 .start = nvdimm_spa_g_start, 433 .access = nvdimm_spa_g_access, 434 .destroy_geom = nvdimm_spa_g_destroy_geom, 435 }; 436 DECLARE_GEOM_CLASS(nvdimm_spa_g_class, g_spa); 437 438 int 439 nvdimm_spa_init(struct SPA_mapping *spa, ACPI_NFIT_SYSTEM_ADDRESS *nfitaddr, 440 enum SPA_mapping_type spa_type) 441 { 442 char *name; 443 int error; 444 445 spa->spa_type = spa_type; 446 spa->spa_nfit_idx = nfitaddr->RangeIndex; 447 spa->dev.spa_domain = 448 ((nfitaddr->Flags & ACPI_NFIT_PROXIMITY_VALID) != 0) ? 449 nfitaddr->ProximityDomain : -1; 450 spa->dev.spa_phys_base = nfitaddr->Address; 451 spa->dev.spa_len = nfitaddr->Length; 452 spa->dev.spa_efi_mem_flags = nfitaddr->MemoryMapping; 453 if (bootverbose) { 454 printf("NVDIMM SPA%d base %#016jx len %#016jx %s fl %#jx\n", 455 spa->spa_nfit_idx, 456 (uintmax_t)spa->dev.spa_phys_base, 457 (uintmax_t)spa->dev.spa_len, 458 nvdimm_SPA_uuid_list[spa_type].u_name, 459 spa->dev.spa_efi_mem_flags); 460 } 461 if (!nvdimm_SPA_uuid_list[spa_type].u_usr_acc) 462 return (0); 463 464 asprintf(&name, M_NVDIMM, "spa%d", spa->spa_nfit_idx); 465 error = nvdimm_spa_dev_init(&spa->dev, name); 466 free(name, M_NVDIMM); 467 return (error); 468 } 469 470 int 471 nvdimm_spa_dev_init(struct nvdimm_spa_dev *dev, const char *name) 472 { 473 struct make_dev_args mda; 474 struct sglist *spa_sg; 475 char *devname; 476 int error, error1; 477 478 error1 = pmap_large_map(dev->spa_phys_base, dev->spa_len, 479 &dev->spa_kva, nvdimm_spa_memattr(dev)); 480 if (error1 != 0) { 481 printf("NVDIMM %s cannot map into KVA, error %d\n", name, 482 error1); 483 dev->spa_kva = NULL; 484 } 485 486 spa_sg = sglist_alloc(1, M_WAITOK); 487 error = sglist_append_phys(spa_sg, dev->spa_phys_base, 488 dev->spa_len); 489 if (error == 0) { 490 dev->spa_obj = vm_pager_allocate(OBJT_SG, spa_sg, dev->spa_len, 491 VM_PROT_ALL, 0, NULL); 492 if (dev->spa_obj == NULL) { 493 printf("NVDIMM %s failed to alloc vm object", name); 494 sglist_free(spa_sg); 495 } 496 } else { 497 printf("NVDIMM %s failed to init sglist, error %d", name, 498 error); 499 sglist_free(spa_sg); 500 } 501 502 make_dev_args_init(&mda); 503 mda.mda_flags = MAKEDEV_WAITOK | MAKEDEV_CHECKNAME; 504 mda.mda_devsw = &spa_cdevsw; 505 mda.mda_cr = NULL; 506 mda.mda_uid = UID_ROOT; 507 mda.mda_gid = GID_OPERATOR; 508 mda.mda_mode = 0660; 509 mda.mda_si_drv1 = dev; 510 asprintf(&devname, M_NVDIMM, "nvdimm_%s", name); 511 error = make_dev_s(&mda, &dev->spa_dev, "%s", devname); 512 free(devname, M_NVDIMM); 513 if (error != 0) { 514 printf("NVDIMM %s cannot create devfs node, error %d\n", name, 515 error); 516 if (error1 == 0) 517 error1 = error; 518 } 519 dev->spa_g = nvdimm_spa_g_create(dev, name); 520 if (dev->spa_g == NULL && error1 == 0) 521 error1 = ENXIO; 522 return (error1); 523 } 524 525 static struct g_geom * 526 nvdimm_spa_g_create(struct nvdimm_spa_dev *dev, const char *name) 527 { 528 struct g_geom *gp; 529 struct g_spa *sc; 530 int error; 531 532 gp = NULL; 533 sc = malloc(sizeof(struct g_spa), M_NVDIMM, M_WAITOK | M_ZERO); 534 sc->dev = dev; 535 bioq_init(&sc->spa_g_queue); 536 mtx_init(&sc->spa_g_mtx, "spag", NULL, MTX_DEF); 537 mtx_init(&sc->spa_g_stat_mtx, "spagst", NULL, MTX_DEF); 538 sc->spa_g_proc_run = true; 539 sc->spa_g_proc_exiting = false; 540 error = kproc_create(nvdimm_spa_g_thread, sc, &sc->spa_g_proc, 0, 0, 541 "g_spa"); 542 if (error != 0) { 543 mtx_destroy(&sc->spa_g_mtx); 544 mtx_destroy(&sc->spa_g_stat_mtx); 545 free(sc, M_NVDIMM); 546 printf("NVDIMM %s cannot create geom worker, error %d\n", name, 547 error); 548 } else { 549 g_topology_lock(); 550 gp = g_new_geomf(&nvdimm_spa_g_class, "%s", name); 551 gp->softc = sc; 552 sc->spa_p = g_new_providerf(gp, "%s", name); 553 sc->spa_p->mediasize = dev->spa_len; 554 sc->spa_p->sectorsize = DEV_BSIZE; 555 sc->spa_p->flags |= G_PF_DIRECT_SEND | G_PF_DIRECT_RECEIVE | 556 G_PF_ACCEPT_UNMAPPED; 557 g_error_provider(sc->spa_p, 0); 558 sc->spa_g_devstat = devstat_new_entry("spa", -1, DEV_BSIZE, 559 DEVSTAT_ALL_SUPPORTED, DEVSTAT_TYPE_DIRECT, 560 DEVSTAT_PRIORITY_MAX); 561 g_topology_unlock(); 562 } 563 return (gp); 564 } 565 566 void 567 nvdimm_spa_fini(struct SPA_mapping *spa) 568 { 569 570 nvdimm_spa_dev_fini(&spa->dev); 571 } 572 573 void 574 nvdimm_spa_dev_fini(struct nvdimm_spa_dev *dev) 575 { 576 577 if (dev->spa_g != NULL) { 578 g_topology_lock(); 579 nvdimm_spa_g_destroy_geom(NULL, dev->spa_g->class, dev->spa_g); 580 g_topology_unlock(); 581 } 582 if (dev->spa_dev != NULL) { 583 destroy_dev(dev->spa_dev); 584 dev->spa_dev = NULL; 585 } 586 vm_object_deallocate(dev->spa_obj); 587 if (dev->spa_kva != NULL) { 588 pmap_large_unmap(dev->spa_kva, dev->spa_len); 589 dev->spa_kva = NULL; 590 } 591 } 592 593 static int 594 nvdimm_spa_g_destroy_geom(struct gctl_req *req, struct g_class *cp, 595 struct g_geom *gp) 596 { 597 struct g_spa *sc; 598 599 sc = gp->softc; 600 mtx_lock(&sc->spa_g_mtx); 601 sc->spa_g_proc_run = false; 602 wakeup(&sc->spa_g_queue); 603 while (!sc->spa_g_proc_exiting) 604 msleep(&sc->spa_g_queue, &sc->spa_g_mtx, PRIBIO, "spa_e", 0); 605 mtx_unlock(&sc->spa_g_mtx); 606 g_topology_assert(); 607 g_wither_geom(gp, ENXIO); 608 sc->spa_p = NULL; 609 if (sc->spa_g_devstat != NULL) { 610 devstat_remove_entry(sc->spa_g_devstat); 611 sc->spa_g_devstat = NULL; 612 } 613 mtx_destroy(&sc->spa_g_mtx); 614 mtx_destroy(&sc->spa_g_stat_mtx); 615 free(sc, M_NVDIMM); 616 return (0); 617 } 618