Now available: The Design and Implementation of the FreeBSD Operating System (Second Edition)
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FreeBSD/Linux Kernel Cross Reference
sys/dev/nvdimm/nvdimm_spa.c
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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 bool 159 nvdimm_spa_type_user_accessible(enum SPA_mapping_type spa_type) 160 { 161 162 if ((int)spa_type < 0 || spa_type >= nitems(nvdimm_SPA_uuid_list)) 163 return (false); 164 return (nvdimm_SPA_uuid_list[spa_type].u_usr_acc); 165 } 166 167 static vm_memattr_t 168 nvdimm_spa_memattr(uint64_t efi_mem_flags) 169 { 170 vm_memattr_t mode; 171 172 if ((efi_mem_flags & EFI_MD_ATTR_WB) != 0) 173 mode = VM_MEMATTR_WRITE_BACK; 174 else if ((efi_mem_flags & EFI_MD_ATTR_WT) != 0) 175 mode = VM_MEMATTR_WRITE_THROUGH; 176 else if ((efi_mem_flags & EFI_MD_ATTR_WC) != 0) 177 mode = VM_MEMATTR_WRITE_COMBINING; 178 else if ((efi_mem_flags & EFI_MD_ATTR_WP) != 0) 179 mode = VM_MEMATTR_WRITE_PROTECTED; 180 else if ((efi_mem_flags & EFI_MD_ATTR_UC) != 0) 181 mode = VM_MEMATTR_UNCACHEABLE; 182 else { 183 if (bootverbose) 184 printf("SPA mapping attr %#lx unsupported\n", 185 efi_mem_flags); 186 mode = VM_MEMATTR_UNCACHEABLE; 187 } 188 return (mode); 189 } 190 191 static int 192 nvdimm_spa_uio(struct nvdimm_spa_dev *dev, struct uio *uio) 193 { 194 struct vm_page m, *ma; 195 off_t off; 196 vm_memattr_t mattr; 197 int error, n; 198 199 error = 0; 200 if (dev->spa_kva == NULL) { 201 mattr = dev->spa_memattr; 202 bzero(&m, sizeof(m)); 203 vm_page_initfake(&m, 0, mattr); 204 ma = &m; 205 while (uio->uio_resid > 0) { 206 if (uio->uio_offset >= dev->spa_len) 207 break; 208 off = dev->spa_phys_base + uio->uio_offset; 209 vm_page_updatefake(&m, trunc_page(off), mattr); 210 n = PAGE_SIZE; 211 if (n > uio->uio_resid) 212 n = uio->uio_resid; 213 error = uiomove_fromphys(&ma, off & PAGE_MASK, n, uio); 214 if (error != 0) 215 break; 216 } 217 } else { 218 while (uio->uio_resid > 0) { 219 if (uio->uio_offset >= dev->spa_len) 220 break; 221 n = INT_MAX; 222 if (n > uio->uio_resid) 223 n = uio->uio_resid; 224 if (uio->uio_offset + n > dev->spa_len) 225 n = dev->spa_len - uio->uio_offset; 226 error = uiomove((char *)dev->spa_kva + uio->uio_offset, 227 n, uio); 228 if (error != 0) 229 break; 230 } 231 } 232 return (error); 233 } 234 235 static int 236 nvdimm_spa_rw(struct cdev *dev, struct uio *uio, int ioflag) 237 { 238 239 return (nvdimm_spa_uio(dev->si_drv1, uio)); 240 } 241 242 static int 243 nvdimm_spa_ioctl(struct cdev *cdev, u_long cmd, caddr_t data, int fflag, 244 struct thread *td) 245 { 246 struct nvdimm_spa_dev *dev; 247 int error; 248 249 dev = cdev->si_drv1; 250 error = 0; 251 switch (cmd) { 252 case DIOCGSECTORSIZE: 253 *(u_int *)data = DEV_BSIZE; 254 break; 255 case DIOCGMEDIASIZE: 256 *(off_t *)data = dev->spa_len; 257 break; 258 default: 259 error = ENOTTY; 260 break; 261 } 262 return (error); 263 } 264 265 static int 266 nvdimm_spa_mmap_single(struct cdev *cdev, vm_ooffset_t *offset, vm_size_t size, 267 vm_object_t *objp, int nprot) 268 { 269 struct nvdimm_spa_dev *dev; 270 271 dev = cdev->si_drv1; 272 if (dev->spa_obj == NULL) 273 return (ENXIO); 274 if (*offset >= dev->spa_len || *offset + size < *offset || 275 *offset + size > dev->spa_len) 276 return (EINVAL); 277 vm_object_reference(dev->spa_obj); 278 *objp = dev->spa_obj; 279 return (0); 280 } 281 282 static struct cdevsw spa_cdevsw = { 283 .d_version = D_VERSION, 284 .d_flags = D_DISK, 285 .d_name = "nvdimm_spa", 286 .d_read = nvdimm_spa_rw, 287 .d_write = nvdimm_spa_rw, 288 .d_ioctl = nvdimm_spa_ioctl, 289 .d_mmap_single = nvdimm_spa_mmap_single, 290 }; 291 292 static void 293 nvdimm_spa_g_all_unmapped(struct nvdimm_spa_dev *dev, struct bio *bp, int rw) 294 { 295 struct vm_page maa[bp->bio_ma_n]; 296 vm_page_t ma[bp->bio_ma_n]; 297 vm_memattr_t mattr; 298 int i; 299 300 mattr = dev->spa_memattr; 301 for (i = 0; i < nitems(ma); i++) { 302 bzero(&maa[i], sizeof(maa[i])); 303 vm_page_initfake(&maa[i], dev->spa_phys_base + 304 trunc_page(bp->bio_offset) + PAGE_SIZE * i, mattr); 305 ma[i] = &maa[i]; 306 } 307 if (rw == BIO_READ) 308 pmap_copy_pages(ma, bp->bio_offset & PAGE_MASK, bp->bio_ma, 309 bp->bio_ma_offset, bp->bio_length); 310 else 311 pmap_copy_pages(bp->bio_ma, bp->bio_ma_offset, ma, 312 bp->bio_offset & PAGE_MASK, bp->bio_length); 313 } 314 315 static void 316 nvdimm_spa_g_thread(void *arg) 317 { 318 struct g_spa *sc; 319 struct bio *bp; 320 struct uio auio; 321 struct iovec aiovec; 322 int error; 323 324 sc = arg; 325 for (;;) { 326 mtx_lock(&sc->spa_g_mtx); 327 for (;;) { 328 bp = bioq_takefirst(&sc->spa_g_queue); 329 if (bp != NULL) 330 break; 331 msleep(&sc->spa_g_queue, &sc->spa_g_mtx, PRIBIO, 332 "spa_g", 0); 333 if (!sc->spa_g_proc_run) { 334 sc->spa_g_proc_exiting = true; 335 wakeup(&sc->spa_g_queue); 336 mtx_unlock(&sc->spa_g_mtx); 337 kproc_exit(0); 338 } 339 continue; 340 } 341 mtx_unlock(&sc->spa_g_mtx); 342 if (bp->bio_cmd != BIO_READ && bp->bio_cmd != BIO_WRITE && 343 bp->bio_cmd != BIO_FLUSH) { 344 error = EOPNOTSUPP; 345 goto completed; 346 } 347 348 error = 0; 349 if (bp->bio_cmd == BIO_FLUSH) { 350 if (sc->dev->spa_kva != NULL) { 351 pmap_large_map_wb(sc->dev->spa_kva, 352 sc->dev->spa_len); 353 } else { 354 pmap_flush_cache_phys_range( 355 (vm_paddr_t)sc->dev->spa_phys_base, 356 (vm_paddr_t)sc->dev->spa_phys_base + 357 sc->dev->spa_len, sc->dev->spa_memattr); 358 } 359 /* 360 * XXX flush IMC 361 */ 362 goto completed; 363 } 364 365 if ((bp->bio_flags & BIO_UNMAPPED) != 0) { 366 if (sc->dev->spa_kva != NULL) { 367 aiovec.iov_base = (char *)sc->dev->spa_kva + 368 bp->bio_offset; 369 aiovec.iov_len = bp->bio_length; 370 auio.uio_iov = &aiovec; 371 auio.uio_iovcnt = 1; 372 auio.uio_resid = bp->bio_length; 373 auio.uio_offset = bp->bio_offset; 374 auio.uio_segflg = UIO_SYSSPACE; 375 auio.uio_rw = bp->bio_cmd == BIO_READ ? 376 UIO_WRITE : UIO_READ; 377 auio.uio_td = curthread; 378 error = uiomove_fromphys(bp->bio_ma, 379 bp->bio_ma_offset, bp->bio_length, &auio); 380 bp->bio_resid = auio.uio_resid; 381 } else { 382 nvdimm_spa_g_all_unmapped(sc->dev, bp, 383 bp->bio_cmd); 384 bp->bio_resid = bp->bio_length; 385 error = 0; 386 } 387 } else { 388 aiovec.iov_base = bp->bio_data; 389 aiovec.iov_len = bp->bio_length; 390 auio.uio_iov = &aiovec; 391 auio.uio_iovcnt = 1; 392 auio.uio_resid = bp->bio_length; 393 auio.uio_offset = bp->bio_offset; 394 auio.uio_segflg = UIO_SYSSPACE; 395 auio.uio_rw = bp->bio_cmd == BIO_READ ? UIO_READ : 396 UIO_WRITE; 397 auio.uio_td = curthread; 398 error = nvdimm_spa_uio(sc->dev, &auio); 399 bp->bio_resid = auio.uio_resid; 400 } 401 bp->bio_bcount = bp->bio_length; 402 devstat_end_transaction_bio(sc->spa_g_devstat, bp); 403 completed: 404 bp->bio_completed = bp->bio_length; 405 g_io_deliver(bp, error); 406 } 407 } 408 409 static void 410 nvdimm_spa_g_start(struct bio *bp) 411 { 412 struct g_spa *sc; 413 414 sc = bp->bio_to->geom->softc; 415 if (bp->bio_cmd == BIO_READ || bp->bio_cmd == BIO_WRITE) { 416 devstat_start_transaction_bio(sc->spa_g_devstat, bp); 417 } 418 mtx_lock(&sc->spa_g_mtx); 419 bioq_disksort(&sc->spa_g_queue, bp); 420 wakeup(&sc->spa_g_queue); 421 mtx_unlock(&sc->spa_g_mtx); 422 } 423 424 static int 425 nvdimm_spa_g_access(struct g_provider *pp, int r, int w, int e) 426 { 427 428 return (0); 429 } 430 431 static struct g_geom * nvdimm_spa_g_create(struct nvdimm_spa_dev *dev, 432 const char *name); 433 static g_ctl_destroy_geom_t nvdimm_spa_g_destroy_geom; 434 435 struct g_class nvdimm_spa_g_class = { 436 .name = "SPA", 437 .version = G_VERSION, 438 .start = nvdimm_spa_g_start, 439 .access = nvdimm_spa_g_access, 440 .destroy_geom = nvdimm_spa_g_destroy_geom, 441 }; 442 DECLARE_GEOM_CLASS(nvdimm_spa_g_class, g_spa); 443 444 int 445 nvdimm_spa_init(struct SPA_mapping *spa, ACPI_NFIT_SYSTEM_ADDRESS *nfitaddr, 446 enum SPA_mapping_type spa_type) 447 { 448 char *name; 449 int error; 450 451 spa->spa_type = spa_type; 452 spa->spa_nfit_idx = nfitaddr->RangeIndex; 453 spa->dev.spa_domain = 454 ((nfitaddr->Flags & ACPI_NFIT_PROXIMITY_VALID) != 0) ? 455 nfitaddr->ProximityDomain : -1; 456 spa->dev.spa_phys_base = nfitaddr->Address; 457 spa->dev.spa_len = nfitaddr->Length; 458 spa->dev.spa_efi_mem_flags = nfitaddr->MemoryMapping; 459 if (bootverbose) { 460 printf("NVDIMM SPA%d base %#016jx len %#016jx %s fl %#jx\n", 461 spa->spa_nfit_idx, 462 (uintmax_t)spa->dev.spa_phys_base, 463 (uintmax_t)spa->dev.spa_len, 464 nvdimm_SPA_uuid_list[spa_type].u_name, 465 spa->dev.spa_efi_mem_flags); 466 } 467 spa->dev.spa_memattr = nvdimm_spa_memattr(nfitaddr->MemoryMapping); 468 if (!nvdimm_SPA_uuid_list[spa_type].u_usr_acc) 469 return (0); 470 471 asprintf(&name, M_NVDIMM, "spa%d", spa->spa_nfit_idx); 472 error = nvdimm_spa_dev_init(&spa->dev, name, spa->spa_nfit_idx); 473 free(name, M_NVDIMM); 474 return (error); 475 } 476 477 int 478 nvdimm_spa_dev_init(struct nvdimm_spa_dev *dev, const char *name, int unit) 479 { 480 struct make_dev_args mda; 481 struct sglist *spa_sg; 482 char *devname; 483 int error, error1; 484 485 error1 = pmap_large_map(dev->spa_phys_base, dev->spa_len, 486 &dev->spa_kva, dev->spa_memattr); 487 if (error1 != 0) { 488 printf("NVDIMM %s cannot map into KVA, error %d\n", name, 489 error1); 490 dev->spa_kva = NULL; 491 } 492 493 spa_sg = sglist_alloc(1, M_WAITOK); 494 error = sglist_append_phys(spa_sg, dev->spa_phys_base, 495 dev->spa_len); 496 if (error == 0) { 497 dev->spa_obj = vm_pager_allocate(OBJT_SG, spa_sg, dev->spa_len, 498 VM_PROT_ALL, 0, NULL); 499 if (dev->spa_obj == NULL) { 500 printf("NVDIMM %s failed to alloc vm object", name); 501 sglist_free(spa_sg); 502 } 503 } else { 504 printf("NVDIMM %s failed to init sglist, error %d", name, 505 error); 506 sglist_free(spa_sg); 507 } 508 509 make_dev_args_init(&mda); 510 mda.mda_flags = MAKEDEV_WAITOK | MAKEDEV_CHECKNAME; 511 mda.mda_devsw = &spa_cdevsw; 512 mda.mda_cr = NULL; 513 mda.mda_uid = UID_ROOT; 514 mda.mda_gid = GID_OPERATOR; 515 mda.mda_mode = 0660; 516 mda.mda_si_drv1 = dev; 517 mda.mda_unit = unit; 518 asprintf(&devname, M_NVDIMM, "nvdimm_%s", name); 519 error = make_dev_s(&mda, &dev->spa_dev, "%s", devname); 520 free(devname, M_NVDIMM); 521 if (error != 0) { 522 printf("NVDIMM %s cannot create devfs node, error %d\n", name, 523 error); 524 if (error1 == 0) 525 error1 = error; 526 } 527 dev->spa_g = nvdimm_spa_g_create(dev, name); 528 if (dev->spa_g == NULL && error1 == 0) 529 error1 = ENXIO; 530 return (error1); 531 } 532 533 static struct g_geom * 534 nvdimm_spa_g_create(struct nvdimm_spa_dev *dev, const char *name) 535 { 536 struct g_geom *gp; 537 struct g_spa *sc; 538 int error; 539 540 gp = NULL; 541 sc = malloc(sizeof(struct g_spa), M_NVDIMM, M_WAITOK | M_ZERO); 542 sc->dev = dev; 543 bioq_init(&sc->spa_g_queue); 544 mtx_init(&sc->spa_g_mtx, "spag", NULL, MTX_DEF); 545 sc->spa_g_proc_run = true; 546 sc->spa_g_proc_exiting = false; 547 error = kproc_create(nvdimm_spa_g_thread, sc, &sc->spa_g_proc, 0, 0, 548 "g_spa"); 549 if (error != 0) { 550 mtx_destroy(&sc->spa_g_mtx); 551 free(sc, M_NVDIMM); 552 printf("NVDIMM %s cannot create geom worker, error %d\n", name, 553 error); 554 } else { 555 g_topology_lock(); 556 gp = g_new_geomf(&nvdimm_spa_g_class, "%s", name); 557 gp->softc = sc; 558 sc->spa_p = g_new_providerf(gp, "%s", name); 559 sc->spa_p->mediasize = dev->spa_len; 560 sc->spa_p->sectorsize = DEV_BSIZE; 561 sc->spa_p->flags |= G_PF_DIRECT_SEND | G_PF_DIRECT_RECEIVE | 562 G_PF_ACCEPT_UNMAPPED; 563 g_error_provider(sc->spa_p, 0); 564 sc->spa_g_devstat = devstat_new_entry("spa", -1, DEV_BSIZE, 565 DEVSTAT_ALL_SUPPORTED, DEVSTAT_TYPE_DIRECT, 566 DEVSTAT_PRIORITY_MAX); 567 g_topology_unlock(); 568 } 569 return (gp); 570 } 571 572 void 573 nvdimm_spa_fini(struct SPA_mapping *spa) 574 { 575 576 nvdimm_spa_dev_fini(&spa->dev); 577 } 578 579 void 580 nvdimm_spa_dev_fini(struct nvdimm_spa_dev *dev) 581 { 582 583 if (dev->spa_g != NULL) { 584 g_topology_lock(); 585 nvdimm_spa_g_destroy_geom(NULL, dev->spa_g->class, dev->spa_g); 586 g_topology_unlock(); 587 } 588 if (dev->spa_dev != NULL) { 589 destroy_dev(dev->spa_dev); 590 dev->spa_dev = NULL; 591 } 592 vm_object_deallocate(dev->spa_obj); 593 if (dev->spa_kva != NULL) { 594 pmap_large_unmap(dev->spa_kva, dev->spa_len); 595 dev->spa_kva = NULL; 596 } 597 } 598 599 static int 600 nvdimm_spa_g_destroy_geom(struct gctl_req *req, struct g_class *cp, 601 struct g_geom *gp) 602 { 603 struct g_spa *sc; 604 605 sc = gp->softc; 606 mtx_lock(&sc->spa_g_mtx); 607 sc->spa_g_proc_run = false; 608 wakeup(&sc->spa_g_queue); 609 while (!sc->spa_g_proc_exiting) 610 msleep(&sc->spa_g_queue, &sc->spa_g_mtx, PRIBIO, "spa_e", 0); 611 mtx_unlock(&sc->spa_g_mtx); 612 g_topology_assert(); 613 g_wither_geom(gp, ENXIO); 614 sc->spa_p = NULL; 615 if (sc->spa_g_devstat != NULL) { 616 devstat_remove_entry(sc->spa_g_devstat); 617 sc->spa_g_devstat = NULL; 618 } 619 mtx_destroy(&sc->spa_g_mtx); 620 free(sc, M_NVDIMM); 621 return (0); 622 }
Cache object: 5610297913ed1c5286dd36ef81e2f10e
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