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_uuid(struct uuid *uuid) 134 { 135 int j; 136 137 for (j = 0; j < nitems(nvdimm_SPA_uuid_list); j++) { 138 if (uuidcmp(uuid, &nvdimm_SPA_uuid_list[j].u_id) != 0) 139 continue; 140 return (j); 141 } 142 return (SPA_TYPE_UNKNOWN); 143 } 144 145 static vm_memattr_t 146 nvdimm_spa_memattr(struct nvdimm_spa_dev *dev) 147 { 148 vm_memattr_t mode; 149 150 if ((dev->spa_efi_mem_flags & EFI_MD_ATTR_WB) != 0) 151 mode = VM_MEMATTR_WRITE_BACK; 152 else if ((dev->spa_efi_mem_flags & EFI_MD_ATTR_WT) != 0) 153 mode = VM_MEMATTR_WRITE_THROUGH; 154 else if ((dev->spa_efi_mem_flags & EFI_MD_ATTR_WC) != 0) 155 mode = VM_MEMATTR_WRITE_COMBINING; 156 else if ((dev->spa_efi_mem_flags & EFI_MD_ATTR_WP) != 0) 157 mode = VM_MEMATTR_WRITE_PROTECTED; 158 else if ((dev->spa_efi_mem_flags & EFI_MD_ATTR_UC) != 0) 159 mode = VM_MEMATTR_UNCACHEABLE; 160 else { 161 if (bootverbose) 162 printf("SPA mapping attr %#lx unsupported\n", 163 dev->spa_efi_mem_flags); 164 mode = VM_MEMATTR_UNCACHEABLE; 165 } 166 return (mode); 167 } 168 169 static int 170 nvdimm_spa_uio(struct nvdimm_spa_dev *dev, struct uio *uio) 171 { 172 struct vm_page m, *ma; 173 off_t off; 174 vm_memattr_t mattr; 175 int error, n; 176 177 error = 0; 178 if (dev->spa_kva == NULL) { 179 mattr = nvdimm_spa_memattr(dev); 180 bzero(&m, sizeof(m)); 181 vm_page_initfake(&m, 0, mattr); 182 ma = &m; 183 while (uio->uio_resid > 0) { 184 if (uio->uio_offset >= dev->spa_len) 185 break; 186 off = dev->spa_phys_base + uio->uio_offset; 187 vm_page_updatefake(&m, trunc_page(off), mattr); 188 n = PAGE_SIZE; 189 if (n > uio->uio_resid) 190 n = uio->uio_resid; 191 error = uiomove_fromphys(&ma, off & PAGE_MASK, n, uio); 192 if (error != 0) 193 break; 194 } 195 } else { 196 while (uio->uio_resid > 0) { 197 if (uio->uio_offset >= dev->spa_len) 198 break; 199 n = INT_MAX; 200 if (n > uio->uio_resid) 201 n = uio->uio_resid; 202 if (uio->uio_offset + n > dev->spa_len) 203 n = dev->spa_len - uio->uio_offset; 204 error = uiomove((char *)dev->spa_kva + uio->uio_offset, 205 n, uio); 206 if (error != 0) 207 break; 208 } 209 } 210 return (error); 211 } 212 213 static int 214 nvdimm_spa_rw(struct cdev *dev, struct uio *uio, int ioflag) 215 { 216 217 return (nvdimm_spa_uio(dev->si_drv1, uio)); 218 } 219 220 static int 221 nvdimm_spa_ioctl(struct cdev *cdev, u_long cmd, caddr_t data, int fflag, 222 struct thread *td) 223 { 224 struct nvdimm_spa_dev *dev; 225 int error; 226 227 dev = cdev->si_drv1; 228 error = 0; 229 switch (cmd) { 230 case DIOCGSECTORSIZE: 231 *(u_int *)data = DEV_BSIZE; 232 break; 233 case DIOCGMEDIASIZE: 234 *(off_t *)data = dev->spa_len; 235 break; 236 default: 237 error = ENOTTY; 238 break; 239 } 240 return (error); 241 } 242 243 static int 244 nvdimm_spa_mmap_single(struct cdev *cdev, vm_ooffset_t *offset, vm_size_t size, 245 vm_object_t *objp, int nprot) 246 { 247 struct nvdimm_spa_dev *dev; 248 249 dev = cdev->si_drv1; 250 if (dev->spa_obj == NULL) 251 return (ENXIO); 252 if (*offset >= dev->spa_len || *offset + size < *offset || 253 *offset + size > dev->spa_len) 254 return (EINVAL); 255 vm_object_reference(dev->spa_obj); 256 *objp = dev->spa_obj; 257 return (0); 258 } 259 260 static struct cdevsw spa_cdevsw = { 261 .d_version = D_VERSION, 262 .d_flags = D_DISK, 263 .d_name = "nvdimm_spa", 264 .d_read = nvdimm_spa_rw, 265 .d_write = nvdimm_spa_rw, 266 .d_ioctl = nvdimm_spa_ioctl, 267 .d_mmap_single = nvdimm_spa_mmap_single, 268 }; 269 270 static void 271 nvdimm_spa_g_all_unmapped(struct nvdimm_spa_dev *dev, struct bio *bp, int rw) 272 { 273 struct vm_page maa[bp->bio_ma_n]; 274 vm_page_t ma[bp->bio_ma_n]; 275 vm_memattr_t mattr; 276 int i; 277 278 mattr = nvdimm_spa_memattr(dev); 279 for (i = 0; i < nitems(ma); i++) { 280 bzero(&maa[i], sizeof(maa[i])); 281 vm_page_initfake(&maa[i], dev->spa_phys_base + 282 trunc_page(bp->bio_offset) + PAGE_SIZE * i, mattr); 283 ma[i] = &maa[i]; 284 } 285 if (rw == BIO_READ) 286 pmap_copy_pages(ma, bp->bio_offset & PAGE_MASK, bp->bio_ma, 287 bp->bio_ma_offset, bp->bio_length); 288 else 289 pmap_copy_pages(bp->bio_ma, bp->bio_ma_offset, ma, 290 bp->bio_offset & PAGE_MASK, bp->bio_length); 291 } 292 293 static void 294 nvdimm_spa_g_thread(void *arg) 295 { 296 struct g_spa *sc; 297 struct bio *bp; 298 struct uio auio; 299 struct iovec aiovec; 300 int error; 301 302 sc = arg; 303 for (;;) { 304 mtx_lock(&sc->spa_g_mtx); 305 for (;;) { 306 bp = bioq_takefirst(&sc->spa_g_queue); 307 if (bp != NULL) 308 break; 309 msleep(&sc->spa_g_queue, &sc->spa_g_mtx, PRIBIO, 310 "spa_g", 0); 311 if (!sc->spa_g_proc_run) { 312 sc->spa_g_proc_exiting = true; 313 wakeup(&sc->spa_g_queue); 314 mtx_unlock(&sc->spa_g_mtx); 315 kproc_exit(0); 316 } 317 continue; 318 } 319 mtx_unlock(&sc->spa_g_mtx); 320 if (bp->bio_cmd != BIO_READ && bp->bio_cmd != BIO_WRITE && 321 bp->bio_cmd != BIO_FLUSH) { 322 error = EOPNOTSUPP; 323 goto completed; 324 } 325 326 error = 0; 327 if (bp->bio_cmd == BIO_FLUSH) { 328 if (sc->dev->spa_kva != NULL) { 329 pmap_large_map_wb(sc->dev->spa_kva, 330 sc->dev->spa_len); 331 } else { 332 pmap_flush_cache_phys_range( 333 (vm_paddr_t)sc->dev->spa_phys_base, 334 (vm_paddr_t)sc->dev->spa_phys_base + 335 sc->dev->spa_len, 336 nvdimm_spa_memattr(sc->dev)); 337 } 338 /* 339 * XXX flush IMC 340 */ 341 goto completed; 342 } 343 344 if ((bp->bio_flags & BIO_UNMAPPED) != 0) { 345 if (sc->dev->spa_kva != NULL) { 346 aiovec.iov_base = (char *)sc->dev->spa_kva + 347 bp->bio_offset; 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 ? 355 UIO_WRITE : UIO_READ; 356 auio.uio_td = curthread; 357 error = uiomove_fromphys(bp->bio_ma, 358 bp->bio_ma_offset, bp->bio_length, &auio); 359 bp->bio_resid = auio.uio_resid; 360 } else { 361 nvdimm_spa_g_all_unmapped(sc->dev, bp, 362 bp->bio_cmd); 363 bp->bio_resid = bp->bio_length; 364 error = 0; 365 } 366 } else { 367 aiovec.iov_base = bp->bio_data; 368 aiovec.iov_len = bp->bio_length; 369 auio.uio_iov = &aiovec; 370 auio.uio_iovcnt = 1; 371 auio.uio_resid = bp->bio_length; 372 auio.uio_offset = bp->bio_offset; 373 auio.uio_segflg = UIO_SYSSPACE; 374 auio.uio_rw = bp->bio_cmd == BIO_READ ? UIO_READ : 375 UIO_WRITE; 376 auio.uio_td = curthread; 377 error = nvdimm_spa_uio(sc->dev, &auio); 378 bp->bio_resid = auio.uio_resid; 379 } 380 bp->bio_bcount = bp->bio_length; 381 devstat_end_transaction_bio(sc->spa_g_devstat, bp); 382 completed: 383 bp->bio_completed = bp->bio_length; 384 g_io_deliver(bp, error); 385 } 386 } 387 388 static void 389 nvdimm_spa_g_start(struct bio *bp) 390 { 391 struct g_spa *sc; 392 393 sc = bp->bio_to->geom->softc; 394 if (bp->bio_cmd == BIO_READ || bp->bio_cmd == BIO_WRITE) { 395 mtx_lock(&sc->spa_g_stat_mtx); 396 devstat_start_transaction_bio(sc->spa_g_devstat, bp); 397 mtx_unlock(&sc->spa_g_stat_mtx); 398 } 399 mtx_lock(&sc->spa_g_mtx); 400 bioq_disksort(&sc->spa_g_queue, bp); 401 wakeup(&sc->spa_g_queue); 402 mtx_unlock(&sc->spa_g_mtx); 403 } 404 405 static int 406 nvdimm_spa_g_access(struct g_provider *pp, int r, int w, int e) 407 { 408 409 return (0); 410 } 411 412 static struct g_geom * nvdimm_spa_g_create(struct nvdimm_spa_dev *dev, 413 const char *name); 414 static g_ctl_destroy_geom_t nvdimm_spa_g_destroy_geom; 415 416 struct g_class nvdimm_spa_g_class = { 417 .name = "SPA", 418 .version = G_VERSION, 419 .start = nvdimm_spa_g_start, 420 .access = nvdimm_spa_g_access, 421 .destroy_geom = nvdimm_spa_g_destroy_geom, 422 }; 423 DECLARE_GEOM_CLASS(nvdimm_spa_g_class, g_spa); 424 425 int 426 nvdimm_spa_init(struct SPA_mapping *spa, ACPI_NFIT_SYSTEM_ADDRESS *nfitaddr, 427 enum SPA_mapping_type spa_type) 428 { 429 char *name; 430 int error; 431 432 spa->spa_type = spa_type; 433 spa->spa_nfit_idx = nfitaddr->RangeIndex; 434 spa->dev.spa_domain = 435 ((nfitaddr->Flags & ACPI_NFIT_PROXIMITY_VALID) != 0) ? 436 nfitaddr->ProximityDomain : -1; 437 spa->dev.spa_phys_base = nfitaddr->Address; 438 spa->dev.spa_len = nfitaddr->Length; 439 spa->dev.spa_efi_mem_flags = nfitaddr->MemoryMapping; 440 if (bootverbose) { 441 printf("NVDIMM SPA%d base %#016jx len %#016jx %s fl %#jx\n", 442 spa->spa_nfit_idx, 443 (uintmax_t)spa->dev.spa_phys_base, 444 (uintmax_t)spa->dev.spa_len, 445 nvdimm_SPA_uuid_list[spa_type].u_name, 446 spa->dev.spa_efi_mem_flags); 447 } 448 if (!nvdimm_SPA_uuid_list[spa_type].u_usr_acc) 449 return (0); 450 451 asprintf(&name, M_NVDIMM, "spa%d", spa->spa_nfit_idx); 452 error = nvdimm_spa_dev_init(&spa->dev, name); 453 free(name, M_NVDIMM); 454 return (error); 455 } 456 457 int 458 nvdimm_spa_dev_init(struct nvdimm_spa_dev *dev, const char *name) 459 { 460 struct make_dev_args mda; 461 struct sglist *spa_sg; 462 char *devname; 463 int error, error1; 464 465 error1 = pmap_large_map(dev->spa_phys_base, dev->spa_len, 466 &dev->spa_kva, nvdimm_spa_memattr(dev)); 467 if (error1 != 0) { 468 printf("NVDIMM %s cannot map into KVA, error %d\n", name, 469 error1); 470 dev->spa_kva = NULL; 471 } 472 473 spa_sg = sglist_alloc(1, M_WAITOK); 474 error = sglist_append_phys(spa_sg, dev->spa_phys_base, 475 dev->spa_len); 476 if (error == 0) { 477 dev->spa_obj = vm_pager_allocate(OBJT_SG, spa_sg, dev->spa_len, 478 VM_PROT_ALL, 0, NULL); 479 if (dev->spa_obj == NULL) { 480 printf("NVDIMM %s failed to alloc vm object", name); 481 sglist_free(spa_sg); 482 } 483 } else { 484 printf("NVDIMM %s failed to init sglist, error %d", name, 485 error); 486 sglist_free(spa_sg); 487 } 488 489 make_dev_args_init(&mda); 490 mda.mda_flags = MAKEDEV_WAITOK | MAKEDEV_CHECKNAME; 491 mda.mda_devsw = &spa_cdevsw; 492 mda.mda_cr = NULL; 493 mda.mda_uid = UID_ROOT; 494 mda.mda_gid = GID_OPERATOR; 495 mda.mda_mode = 0660; 496 mda.mda_si_drv1 = dev; 497 asprintf(&devname, M_NVDIMM, "nvdimm_%s", name); 498 error = make_dev_s(&mda, &dev->spa_dev, "%s", devname); 499 free(devname, M_NVDIMM); 500 if (error != 0) { 501 printf("NVDIMM %s cannot create devfs node, error %d\n", name, 502 error); 503 if (error1 == 0) 504 error1 = error; 505 } 506 dev->spa_g = nvdimm_spa_g_create(dev, name); 507 if (dev->spa_g == NULL && error1 == 0) 508 error1 = ENXIO; 509 return (error1); 510 } 511 512 static struct g_geom * 513 nvdimm_spa_g_create(struct nvdimm_spa_dev *dev, const char *name) 514 { 515 struct g_geom *gp; 516 struct g_spa *sc; 517 int error; 518 519 gp = NULL; 520 sc = malloc(sizeof(struct g_spa), M_NVDIMM, M_WAITOK | M_ZERO); 521 sc->dev = dev; 522 bioq_init(&sc->spa_g_queue); 523 mtx_init(&sc->spa_g_mtx, "spag", NULL, MTX_DEF); 524 mtx_init(&sc->spa_g_stat_mtx, "spagst", NULL, MTX_DEF); 525 sc->spa_g_proc_run = true; 526 sc->spa_g_proc_exiting = false; 527 error = kproc_create(nvdimm_spa_g_thread, sc, &sc->spa_g_proc, 0, 0, 528 "g_spa"); 529 if (error != 0) { 530 mtx_destroy(&sc->spa_g_mtx); 531 mtx_destroy(&sc->spa_g_stat_mtx); 532 free(sc, M_NVDIMM); 533 printf("NVDIMM %s cannot create geom worker, error %d\n", name, 534 error); 535 } else { 536 g_topology_lock(); 537 gp = g_new_geomf(&nvdimm_spa_g_class, "%s", name); 538 gp->softc = sc; 539 sc->spa_p = g_new_providerf(gp, "%s", name); 540 sc->spa_p->mediasize = dev->spa_len; 541 sc->spa_p->sectorsize = DEV_BSIZE; 542 sc->spa_p->flags |= G_PF_DIRECT_SEND | G_PF_DIRECT_RECEIVE | 543 G_PF_ACCEPT_UNMAPPED; 544 g_error_provider(sc->spa_p, 0); 545 sc->spa_g_devstat = devstat_new_entry("spa", -1, DEV_BSIZE, 546 DEVSTAT_ALL_SUPPORTED, DEVSTAT_TYPE_DIRECT, 547 DEVSTAT_PRIORITY_MAX); 548 g_topology_unlock(); 549 } 550 return (gp); 551 } 552 553 void 554 nvdimm_spa_fini(struct SPA_mapping *spa) 555 { 556 557 nvdimm_spa_dev_fini(&spa->dev); 558 } 559 560 void 561 nvdimm_spa_dev_fini(struct nvdimm_spa_dev *dev) 562 { 563 564 if (dev->spa_g != NULL) { 565 g_topology_lock(); 566 nvdimm_spa_g_destroy_geom(NULL, dev->spa_g->class, dev->spa_g); 567 g_topology_unlock(); 568 } 569 if (dev->spa_dev != NULL) { 570 destroy_dev(dev->spa_dev); 571 dev->spa_dev = NULL; 572 } 573 vm_object_deallocate(dev->spa_obj); 574 if (dev->spa_kva != NULL) { 575 pmap_large_unmap(dev->spa_kva, dev->spa_len); 576 dev->spa_kva = NULL; 577 } 578 } 579 580 static int 581 nvdimm_spa_g_destroy_geom(struct gctl_req *req, struct g_class *cp, 582 struct g_geom *gp) 583 { 584 struct g_spa *sc; 585 586 sc = gp->softc; 587 mtx_lock(&sc->spa_g_mtx); 588 sc->spa_g_proc_run = false; 589 wakeup(&sc->spa_g_queue); 590 while (!sc->spa_g_proc_exiting) 591 msleep(&sc->spa_g_queue, &sc->spa_g_mtx, PRIBIO, "spa_e", 0); 592 mtx_unlock(&sc->spa_g_mtx); 593 g_topology_assert(); 594 g_wither_geom(gp, ENXIO); 595 sc->spa_p = NULL; 596 if (sc->spa_g_devstat != NULL) { 597 devstat_remove_entry(sc->spa_g_devstat); 598 sc->spa_g_devstat = NULL; 599 } 600 mtx_destroy(&sc->spa_g_mtx); 601 mtx_destroy(&sc->spa_g_stat_mtx); 602 free(sc, M_NVDIMM); 603 return (0); 604 } 605