1 /*- 2 * SPDX-License-Identifier: BSD-2-Clause 3 * 4 * Copyright (c) 2015 Netflix, Inc. 5 * 6 * Redistribution and use in source and binary forms, with or without 7 * modification, are permitted provided that the following conditions 8 * are met: 9 * 1. Redistributions of source code must retain the above copyright 10 * notice, this list of conditions and the following disclaimer. 11 * 2. Redistributions in binary form must reproduce the above copyright 12 * notice, this list of conditions and the following disclaimer in the 13 * documentation and/or other materials provided with the distribution. 14 * 15 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 16 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 17 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 18 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 19 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 20 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 21 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 22 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 23 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 24 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 25 * SUCH DAMAGE. 26 * 27 * Derived from ata_da.c: 28 * Copyright (c) 2009 Alexander Motin <mav@FreeBSD.org> 29 */ 30 31 #include <sys/param.h> 32 33 #ifdef _KERNEL 34 #include <sys/systm.h> 35 #include <sys/kernel.h> 36 #include <sys/bio.h> 37 #include <sys/sysctl.h> 38 #include <sys/taskqueue.h> 39 #include <sys/lock.h> 40 #include <sys/mutex.h> 41 #include <sys/conf.h> 42 #include <sys/devicestat.h> 43 #include <sys/eventhandler.h> 44 #include <sys/malloc.h> 45 #include <sys/cons.h> 46 #include <sys/power.h> 47 #include <sys/proc.h> 48 #include <sys/reboot.h> 49 #include <sys/sbuf.h> 50 #include <geom/geom.h> 51 #include <geom/geom_disk.h> 52 #endif /* _KERNEL */ 53 54 #ifndef _KERNEL 55 #include <stdio.h> 56 #include <string.h> 57 #endif /* _KERNEL */ 58 59 #include <cam/cam.h> 60 #include <cam/cam_ccb.h> 61 #include <cam/cam_periph.h> 62 #include <cam/cam_xpt_periph.h> 63 #include <cam/cam_sim.h> 64 #include <cam/cam_iosched.h> 65 66 #include <cam/nvme/nvme_all.h> 67 68 typedef enum { 69 NDA_STATE_NORMAL 70 } nda_state; 71 72 typedef enum { 73 NDA_FLAG_OPEN = 0x0001, 74 NDA_FLAG_DIRTY = 0x0002, 75 NDA_FLAG_SCTX_INIT = 0x0004, 76 } nda_flags; 77 #define NDA_FLAG_STRING \ 78 "\020" \ 79 "\001OPEN" \ 80 "\002DIRTY" \ 81 "\003SCTX_INIT" 82 83 typedef enum { 84 NDA_Q_4K = 0x01, 85 NDA_Q_NONE = 0x00, 86 } nda_quirks; 87 88 #define NDA_Q_BIT_STRING \ 89 "\020" \ 90 "\001Bit 0" 91 92 typedef enum { 93 NDA_CCB_BUFFER_IO = 0x01, 94 NDA_CCB_DUMP = 0x02, 95 NDA_CCB_TRIM = 0x03, 96 NDA_CCB_PASS = 0x04, 97 NDA_CCB_TYPE_MASK = 0x0F, 98 } nda_ccb_state; 99 100 /* Offsets into our private area for storing information */ 101 #define ccb_state ccb_h.ppriv_field0 102 #define ccb_bp ccb_h.ppriv_ptr1 /* For NDA_CCB_BUFFER_IO */ 103 #define ccb_trim ccb_h.ppriv_ptr1 /* For NDA_CCB_TRIM */ 104 105 struct nda_softc { 106 struct cam_iosched_softc *cam_iosched; 107 int outstanding_cmds; /* Number of active commands */ 108 int refcount; /* Active xpt_action() calls */ 109 nda_state state; 110 nda_flags flags; 111 nda_quirks quirks; 112 int unmappedio; 113 quad_t deletes; 114 uint32_t nsid; /* Namespace ID for this nda device */ 115 struct disk *disk; 116 struct task sysctl_task; 117 struct sysctl_ctx_list sysctl_ctx; 118 struct sysctl_oid *sysctl_tree; 119 uint64_t trim_count; 120 uint64_t trim_ranges; 121 uint64_t trim_lbas; 122 #ifdef CAM_TEST_FAILURE 123 int force_read_error; 124 int force_write_error; 125 int periodic_read_error; 126 int periodic_read_count; 127 #endif 128 #ifdef CAM_IO_STATS 129 struct sysctl_ctx_list sysctl_stats_ctx; 130 struct sysctl_oid *sysctl_stats_tree; 131 u_int timeouts; 132 u_int errors; 133 u_int invalidations; 134 #endif 135 }; 136 137 struct nda_trim_request { 138 struct nvme_dsm_range dsm[NVME_MAX_DSM_TRIM / sizeof(struct nvme_dsm_range)]; 139 TAILQ_HEAD(, bio) bps; 140 }; 141 _Static_assert(NVME_MAX_DSM_TRIM % sizeof(struct nvme_dsm_range) == 0, 142 "NVME_MAX_DSM_TRIM must be an integral number of ranges"); 143 144 /* Need quirk table */ 145 146 static disk_ioctl_t ndaioctl; 147 static disk_strategy_t ndastrategy; 148 static dumper_t ndadump; 149 static periph_init_t ndainit; 150 static void ndaasync(void *callback_arg, uint32_t code, 151 struct cam_path *path, void *arg); 152 static void ndasysctlinit(void *context, int pending); 153 static int ndaflagssysctl(SYSCTL_HANDLER_ARGS); 154 static periph_ctor_t ndaregister; 155 static periph_dtor_t ndacleanup; 156 static periph_start_t ndastart; 157 static periph_oninv_t ndaoninvalidate; 158 static void ndadone(struct cam_periph *periph, 159 union ccb *done_ccb); 160 static int ndaerror(union ccb *ccb, uint32_t cam_flags, 161 uint32_t sense_flags); 162 static void ndashutdown(void *arg, int howto); 163 static void ndasuspend(void *arg, enum power_stype stype); 164 165 #ifndef NDA_DEFAULT_SEND_ORDERED 166 #define NDA_DEFAULT_SEND_ORDERED 1 167 #endif 168 #ifndef NDA_DEFAULT_TIMEOUT 169 #define NDA_DEFAULT_TIMEOUT 30 /* Timeout in seconds */ 170 #endif 171 #ifndef NDA_DEFAULT_RETRY 172 #define NDA_DEFAULT_RETRY 4 173 #endif 174 #ifndef NDA_MAX_TRIM_ENTRIES 175 #define NDA_MAX_TRIM_ENTRIES (NVME_MAX_DSM_TRIM / sizeof(struct nvme_dsm_range))/* Number of DSM trims to use, max 256 */ 176 #endif 177 178 static SYSCTL_NODE(_kern_cam, OID_AUTO, nda, CTLFLAG_RD | CTLFLAG_MPSAFE, 0, 179 "CAM Direct Access Disk driver"); 180 181 //static int nda_retry_count = NDA_DEFAULT_RETRY; 182 static int nda_send_ordered = NDA_DEFAULT_SEND_ORDERED; 183 static int nda_default_timeout = NDA_DEFAULT_TIMEOUT; 184 static int nda_max_trim_entries = NDA_MAX_TRIM_ENTRIES; 185 static int nda_enable_biospeedup = 1; 186 static int nda_nvd_compat = 1; 187 SYSCTL_INT(_kern_cam_nda, OID_AUTO, max_trim, CTLFLAG_RDTUN, 188 &nda_max_trim_entries, NDA_MAX_TRIM_ENTRIES, 189 "Maximum number of BIO_DELETE to send down as a DSM TRIM."); 190 SYSCTL_INT(_kern_cam_nda, OID_AUTO, enable_biospeedup, CTLFLAG_RDTUN, 191 &nda_enable_biospeedup, 0, "Enable BIO_SPEEDUP processing."); 192 SYSCTL_INT(_kern_cam_nda, OID_AUTO, nvd_compat, CTLFLAG_RDTUN, 193 &nda_nvd_compat, 1, "Enable creation of nvd aliases."); 194 195 /* 196 * All NVMe media is non-rotational, so all nvme device instances 197 * share this to implement the sysctl. 198 */ 199 static int nda_rotating_media = 0; 200 201 static struct periph_driver ndadriver = 202 { 203 ndainit, "nda", 204 TAILQ_HEAD_INITIALIZER(ndadriver.units), /* generation */ 0 205 }; 206 207 PERIPHDRIVER_DECLARE(nda, ndadriver); 208 209 static MALLOC_DEFINE(M_NVMEDA, "nvme_da", "nvme_da buffers"); 210 211 /* 212 * nice wrappers. Maybe these belong in nvme_all.c instead of 213 * here, but this is the only place that uses these. Should 214 * we ever grow another NVME periph, we should move them 215 * all there wholesale. 216 */ 217 218 static void 219 nda_nvme_flush(struct nda_softc *softc, struct ccb_nvmeio *nvmeio) 220 { 221 cam_fill_nvmeio(nvmeio, 222 0, /* retries */ 223 ndadone, /* cbfcnp */ 224 CAM_DIR_NONE, /* flags */ 225 NULL, /* data_ptr */ 226 0, /* dxfer_len */ 227 nda_default_timeout * 1000); /* timeout 30s */ 228 nvme_ns_flush_cmd(&nvmeio->cmd, softc->nsid); 229 } 230 231 static void 232 nda_nvme_trim(struct nda_softc *softc, struct ccb_nvmeio *nvmeio, 233 void *payload, uint32_t num_ranges) 234 { 235 cam_fill_nvmeio(nvmeio, 236 0, /* retries */ 237 ndadone, /* cbfcnp */ 238 CAM_DIR_OUT, /* flags */ 239 payload, /* data_ptr */ 240 num_ranges * sizeof(struct nvme_dsm_range), /* dxfer_len */ 241 nda_default_timeout * 1000); /* timeout 30s */ 242 nvme_ns_trim_cmd(&nvmeio->cmd, softc->nsid, num_ranges); 243 } 244 245 static void 246 nda_nvme_write(struct nda_softc *softc, struct ccb_nvmeio *nvmeio, 247 void *payload, uint64_t lba, uint32_t len, uint32_t count) 248 { 249 cam_fill_nvmeio(nvmeio, 250 0, /* retries */ 251 ndadone, /* cbfcnp */ 252 CAM_DIR_OUT, /* flags */ 253 payload, /* data_ptr */ 254 len, /* dxfer_len */ 255 nda_default_timeout * 1000); /* timeout 30s */ 256 nvme_ns_write_cmd(&nvmeio->cmd, softc->nsid, lba, count); 257 } 258 259 static void 260 nda_nvme_rw_bio(struct nda_softc *softc, struct ccb_nvmeio *nvmeio, 261 struct bio *bp, uint32_t rwcmd) 262 { 263 int flags = rwcmd == NVME_OPC_READ ? CAM_DIR_IN : CAM_DIR_OUT; 264 void *payload; 265 uint64_t lba; 266 uint32_t count; 267 268 if (bp->bio_flags & BIO_UNMAPPED) { 269 flags |= CAM_DATA_BIO; 270 payload = bp; 271 } else { 272 payload = bp->bio_data; 273 } 274 275 lba = bp->bio_pblkno; 276 count = bp->bio_bcount / softc->disk->d_sectorsize; 277 278 cam_fill_nvmeio(nvmeio, 279 0, /* retries */ 280 ndadone, /* cbfcnp */ 281 flags, /* flags */ 282 payload, /* data_ptr */ 283 bp->bio_bcount, /* dxfer_len */ 284 nda_default_timeout * 1000); /* timeout 30s */ 285 nvme_ns_rw_cmd(&nvmeio->cmd, rwcmd, softc->nsid, lba, count); 286 } 287 288 static int 289 ndaopen(struct disk *dp) 290 { 291 struct cam_periph *periph; 292 struct nda_softc *softc; 293 int error; 294 295 periph = (struct cam_periph *)dp->d_drv1; 296 if (cam_periph_acquire(periph) != 0) { 297 return(ENXIO); 298 } 299 300 cam_periph_lock(periph); 301 if ((error = cam_periph_hold(periph, PRIBIO|PCATCH)) != 0) { 302 cam_periph_unlock(periph); 303 cam_periph_release(periph); 304 return (error); 305 } 306 307 CAM_DEBUG(periph->path, CAM_DEBUG_TRACE | CAM_DEBUG_PERIPH, 308 ("ndaopen\n")); 309 310 softc = (struct nda_softc *)periph->softc; 311 softc->flags |= NDA_FLAG_OPEN; 312 313 cam_periph_unhold(periph); 314 cam_periph_unlock(periph); 315 return (0); 316 } 317 318 static int 319 ndaclose(struct disk *dp) 320 { 321 struct cam_periph *periph; 322 struct nda_softc *softc; 323 union ccb *ccb; 324 int error; 325 326 periph = (struct cam_periph *)dp->d_drv1; 327 softc = (struct nda_softc *)periph->softc; 328 cam_periph_lock(periph); 329 330 CAM_DEBUG(periph->path, CAM_DEBUG_TRACE | CAM_DEBUG_PERIPH, 331 ("ndaclose\n")); 332 333 if ((softc->flags & NDA_FLAG_DIRTY) != 0 && 334 (periph->flags & CAM_PERIPH_INVALID) == 0 && 335 cam_periph_hold(periph, PRIBIO) == 0) { 336 ccb = cam_periph_getccb(periph, CAM_PRIORITY_NORMAL); 337 nda_nvme_flush(softc, &ccb->nvmeio); 338 error = cam_periph_runccb(ccb, ndaerror, /*cam_flags*/0, 339 /*sense_flags*/0, softc->disk->d_devstat); 340 341 if (error != 0) 342 xpt_print(periph->path, "Synchronize cache failed\n"); 343 else 344 softc->flags &= ~NDA_FLAG_DIRTY; 345 xpt_release_ccb(ccb); 346 cam_periph_unhold(periph); 347 } 348 349 softc->flags &= ~NDA_FLAG_OPEN; 350 351 while (softc->refcount != 0) 352 cam_periph_sleep(periph, &softc->refcount, PRIBIO, "ndaclose", 1); 353 KASSERT(softc->outstanding_cmds == 0, 354 ("nda %d outstanding commands", softc->outstanding_cmds)); 355 cam_periph_unlock(periph); 356 cam_periph_release(periph); 357 return (0); 358 } 359 360 static void 361 ndaschedule(struct cam_periph *periph) 362 { 363 struct nda_softc *softc = (struct nda_softc *)periph->softc; 364 365 if (softc->state != NDA_STATE_NORMAL) 366 return; 367 368 cam_iosched_schedule(softc->cam_iosched, periph); 369 } 370 371 static int 372 ndaioctl(struct disk *dp, u_long cmd, void *data, int fflag, 373 struct thread *td) 374 { 375 struct cam_periph *periph; 376 377 periph = (struct cam_periph *)dp->d_drv1; 378 379 switch (cmd) { 380 case NVME_IO_TEST: 381 case NVME_BIO_TEST: 382 /* 383 * These don't map well to the underlying CCBs, so 384 * they are usupported via CAM. 385 */ 386 return (ENOTTY); 387 case NVME_GET_NSID: 388 { 389 struct nvme_get_nsid *gnsid = (struct nvme_get_nsid *)data; 390 struct ccb_pathinq cpi; 391 392 xpt_path_inq(&cpi, periph->path); 393 strncpy(gnsid->cdev, cpi.xport_specific.nvme.dev_name, 394 sizeof(gnsid->cdev)); 395 gnsid->nsid = cpi.xport_specific.nvme.nsid; 396 return (0); 397 } 398 case NVME_PASSTHROUGH_CMD: 399 { 400 struct nvme_pt_command *pt; 401 union ccb *ccb; 402 struct cam_periph_map_info mapinfo; 403 u_int maxmap = dp->d_maxsize; 404 int error; 405 406 /* 407 * Create a NVME_IO CCB to do the passthrough command. 408 */ 409 pt = (struct nvme_pt_command *)data; 410 ccb = xpt_alloc_ccb(); 411 xpt_setup_ccb(&ccb->ccb_h, periph->path, CAM_PRIORITY_NORMAL); 412 ccb->ccb_state = NDA_CCB_PASS; 413 cam_fill_nvmeio(&ccb->nvmeio, 414 0, /* Retries */ 415 ndadone, 416 (pt->is_read ? CAM_DIR_IN : CAM_DIR_OUT) | CAM_DATA_VADDR, 417 pt->buf, 418 pt->len, 419 nda_default_timeout * 1000); 420 memcpy(&ccb->nvmeio.cmd, &pt->cmd, sizeof(pt->cmd)); 421 422 /* 423 * Wire the user memory in this request for the I/O 424 */ 425 memset(&mapinfo, 0, sizeof(mapinfo)); 426 error = cam_periph_mapmem(ccb, &mapinfo, maxmap); 427 if (error) 428 goto out; 429 430 /* 431 * Lock the periph and run the command. 432 */ 433 cam_periph_lock(periph); 434 cam_periph_runccb(ccb, NULL, CAM_RETRY_SELTO, 435 SF_RETRY_UA | SF_NO_PRINT, NULL); 436 437 /* 438 * Tear down mapping and return status. 439 */ 440 cam_periph_unlock(periph); 441 error = cam_periph_unmapmem(ccb, &mapinfo); 442 if (!cam_ccb_success(ccb)) 443 error = EIO; 444 out: 445 cam_periph_lock(periph); 446 xpt_release_ccb(ccb); 447 cam_periph_unlock(periph); 448 return (error); 449 } 450 default: 451 break; 452 } 453 return (ENOTTY); 454 } 455 456 /* 457 * Actually translate the requested transfer into one the physical driver 458 * can understand. The transfer is described by a buf and will include 459 * only one physical transfer. 460 */ 461 static void 462 ndastrategy(struct bio *bp) 463 { 464 struct cam_periph *periph; 465 struct nda_softc *softc; 466 467 periph = (struct cam_periph *)bp->bio_disk->d_drv1; 468 softc = (struct nda_softc *)periph->softc; 469 470 cam_periph_lock(periph); 471 472 CAM_DEBUG(periph->path, CAM_DEBUG_TRACE, ("ndastrategy(%p)\n", bp)); 473 474 /* 475 * If the device has been made invalid, error out 476 */ 477 if ((periph->flags & CAM_PERIPH_INVALID) != 0) { 478 cam_periph_unlock(periph); 479 biofinish(bp, NULL, ENXIO); 480 return; 481 } 482 483 if (bp->bio_cmd == BIO_DELETE) 484 softc->deletes++; 485 486 /* 487 * Place it in the queue of disk activities for this disk 488 */ 489 cam_iosched_queue_work(softc->cam_iosched, bp); 490 491 /* 492 * Schedule ourselves for performing the work. 493 */ 494 ndaschedule(periph); 495 cam_periph_unlock(periph); 496 497 return; 498 } 499 500 static int 501 ndadump(void *arg, void *virtual, off_t offset, size_t length) 502 { 503 struct cam_periph *periph; 504 struct nda_softc *softc; 505 u_int secsize; 506 struct ccb_nvmeio nvmeio; 507 struct disk *dp; 508 uint64_t lba; 509 uint32_t count; 510 int error = 0; 511 512 dp = arg; 513 periph = dp->d_drv1; 514 softc = (struct nda_softc *)periph->softc; 515 secsize = softc->disk->d_sectorsize; 516 lba = offset / secsize; 517 count = length / secsize; 518 519 if ((periph->flags & CAM_PERIPH_INVALID) != 0) 520 return (ENXIO); 521 522 /* xpt_get_ccb returns a zero'd allocation for the ccb, mimic that here */ 523 memset(&nvmeio, 0, sizeof(nvmeio)); 524 if (length > 0) { 525 xpt_setup_ccb(&nvmeio.ccb_h, periph->path, CAM_PRIORITY_NORMAL); 526 nvmeio.ccb_state = NDA_CCB_DUMP; 527 nda_nvme_write(softc, &nvmeio, virtual, lba, length, count); 528 error = cam_periph_runccb((union ccb *)&nvmeio, cam_periph_error, 529 0, SF_NO_RECOVERY | SF_NO_RETRY, NULL); 530 if (error != 0) 531 printf("Aborting dump due to I/O error %d.\n", error); 532 533 return (error); 534 } 535 536 /* Flush */ 537 xpt_setup_ccb(&nvmeio.ccb_h, periph->path, CAM_PRIORITY_NORMAL); 538 539 nvmeio.ccb_state = NDA_CCB_DUMP; 540 nda_nvme_flush(softc, &nvmeio); 541 error = cam_periph_runccb((union ccb *)&nvmeio, cam_periph_error, 542 0, SF_NO_RECOVERY | SF_NO_RETRY, NULL); 543 if (error != 0) 544 xpt_print(periph->path, "flush cmd failed\n"); 545 return (error); 546 } 547 548 static void 549 ndainit(void) 550 { 551 cam_status status; 552 553 /* 554 * Install a global async callback. This callback will 555 * receive async callbacks like "new device found". 556 */ 557 status = xpt_register_async(AC_FOUND_DEVICE, ndaasync, NULL, NULL); 558 559 if (status != CAM_REQ_CMP) { 560 printf("nda: Failed to attach master async callback " 561 "due to status 0x%x!\n", status); 562 } else if (nda_send_ordered) { 563 /* Register our event handlers */ 564 if ((EVENTHANDLER_REGISTER(power_suspend, ndasuspend, 565 NULL, EVENTHANDLER_PRI_LAST)) == NULL) 566 printf("ndainit: power event registration failed!\n"); 567 if ((EVENTHANDLER_REGISTER(shutdown_post_sync, ndashutdown, 568 NULL, SHUTDOWN_PRI_DEFAULT)) == NULL) 569 printf("ndainit: shutdown event registration failed!\n"); 570 } 571 } 572 573 /* 574 * Callback from GEOM, called when it has finished cleaning up its 575 * resources. 576 */ 577 static void 578 ndadiskgonecb(struct disk *dp) 579 { 580 struct cam_periph *periph; 581 582 periph = (struct cam_periph *)dp->d_drv1; 583 584 cam_periph_release(periph); 585 } 586 587 static void 588 ndaoninvalidate(struct cam_periph *periph) 589 { 590 struct nda_softc *softc; 591 592 softc = (struct nda_softc *)periph->softc; 593 594 /* 595 * De-register any async callbacks. 596 */ 597 xpt_register_async(0, ndaasync, periph, periph->path); 598 #ifdef CAM_IO_STATS 599 softc->invalidations++; 600 #endif 601 602 /* 603 * Return all queued I/O with ENXIO. Transactions may be queued up here 604 * for retry (since we are called while there's other transactions 605 * pending). Any requests in the hardware will drain before ndacleanup 606 * is called. 607 */ 608 cam_iosched_flush(softc->cam_iosched, NULL, ENXIO); 609 610 /* 611 * Tell GEOM that we've gone away, we'll get a callback when it is 612 * done cleaning up its resources. 613 */ 614 disk_gone(softc->disk); 615 } 616 617 static void 618 ndacleanup(struct cam_periph *periph) 619 { 620 struct nda_softc *softc; 621 622 softc = (struct nda_softc *)periph->softc; 623 624 cam_periph_unlock(periph); 625 626 cam_iosched_fini(softc->cam_iosched); 627 628 /* 629 * If we can't free the sysctl tree, oh well... 630 */ 631 if ((softc->flags & NDA_FLAG_SCTX_INIT) != 0) { 632 #ifdef CAM_IO_STATS 633 if (sysctl_ctx_free(&softc->sysctl_stats_ctx) != 0) 634 xpt_print(periph->path, 635 "can't remove sysctl stats context\n"); 636 #endif 637 if (sysctl_ctx_free(&softc->sysctl_ctx) != 0) 638 xpt_print(periph->path, 639 "can't remove sysctl context\n"); 640 } 641 642 disk_destroy(softc->disk); 643 free(softc, M_DEVBUF); 644 cam_periph_lock(periph); 645 } 646 647 static void 648 ndaasync(void *callback_arg, uint32_t code, 649 struct cam_path *path, void *arg) 650 { 651 struct cam_periph *periph; 652 653 periph = (struct cam_periph *)callback_arg; 654 switch (code) { 655 case AC_FOUND_DEVICE: 656 { 657 struct ccb_getdev *cgd; 658 cam_status status; 659 660 cgd = (struct ccb_getdev *)arg; 661 if (cgd == NULL) 662 break; 663 664 if (cgd->protocol != PROTO_NVME) 665 break; 666 667 /* 668 * Allocate a peripheral instance for 669 * this device and start the probe 670 * process. 671 */ 672 status = cam_periph_alloc(ndaregister, ndaoninvalidate, 673 ndacleanup, ndastart, 674 "nda", CAM_PERIPH_BIO, 675 path, ndaasync, 676 AC_FOUND_DEVICE, cgd); 677 678 if (status != CAM_REQ_CMP 679 && status != CAM_REQ_INPROG) 680 printf("ndaasync: Unable to attach to new device " 681 "due to status 0x%x\n", status); 682 break; 683 } 684 case AC_ADVINFO_CHANGED: 685 { 686 uintptr_t buftype; 687 688 buftype = (uintptr_t)arg; 689 if (buftype == CDAI_TYPE_PHYS_PATH) { 690 struct nda_softc *softc; 691 692 softc = periph->softc; 693 disk_attr_changed(softc->disk, "GEOM::physpath", 694 M_NOWAIT); 695 } 696 break; 697 } 698 case AC_LOST_DEVICE: 699 default: 700 break; 701 } 702 cam_periph_async(periph, code, path, arg); 703 } 704 705 static void 706 ndasysctlinit(void *context, int pending) 707 { 708 struct cam_periph *periph; 709 struct nda_softc *softc; 710 char tmpstr[32], tmpstr2[16]; 711 712 periph = (struct cam_periph *)context; 713 714 /* periph was held for us when this task was enqueued */ 715 if ((periph->flags & CAM_PERIPH_INVALID) != 0) { 716 cam_periph_release(periph); 717 return; 718 } 719 720 softc = (struct nda_softc *)periph->softc; 721 snprintf(tmpstr, sizeof(tmpstr), "CAM NDA unit %d", periph->unit_number); 722 snprintf(tmpstr2, sizeof(tmpstr2), "%d", periph->unit_number); 723 724 sysctl_ctx_init(&softc->sysctl_ctx); 725 softc->flags |= NDA_FLAG_SCTX_INIT; 726 softc->sysctl_tree = SYSCTL_ADD_NODE_WITH_LABEL(&softc->sysctl_ctx, 727 SYSCTL_STATIC_CHILDREN(_kern_cam_nda), OID_AUTO, tmpstr2, 728 CTLFLAG_RD | CTLFLAG_MPSAFE, 0, tmpstr, "device_index"); 729 if (softc->sysctl_tree == NULL) { 730 printf("ndasysctlinit: unable to allocate sysctl tree\n"); 731 cam_periph_release(periph); 732 return; 733 } 734 735 SYSCTL_ADD_INT(&softc->sysctl_ctx, SYSCTL_CHILDREN(softc->sysctl_tree), 736 OID_AUTO, "unmapped_io", CTLFLAG_RD, 737 &softc->unmappedio, 0, "Unmapped I/O leaf"); 738 739 SYSCTL_ADD_QUAD(&softc->sysctl_ctx, SYSCTL_CHILDREN(softc->sysctl_tree), 740 OID_AUTO, "deletes", CTLFLAG_RD, 741 &softc->deletes, "Number of BIO_DELETE requests"); 742 743 SYSCTL_ADD_UQUAD(&softc->sysctl_ctx, 744 SYSCTL_CHILDREN(softc->sysctl_tree), OID_AUTO, 745 "trim_count", CTLFLAG_RD, &softc->trim_count, 746 "Total number of unmap/dsm commands sent"); 747 SYSCTL_ADD_UQUAD(&softc->sysctl_ctx, 748 SYSCTL_CHILDREN(softc->sysctl_tree), OID_AUTO, 749 "trim_ranges", CTLFLAG_RD, &softc->trim_ranges, 750 "Total number of ranges in unmap/dsm commands"); 751 SYSCTL_ADD_UQUAD(&softc->sysctl_ctx, 752 SYSCTL_CHILDREN(softc->sysctl_tree), OID_AUTO, 753 "trim_lbas", CTLFLAG_RD, &softc->trim_lbas, 754 "Total lbas in the unmap/dsm commands sent"); 755 756 SYSCTL_ADD_INT(&softc->sysctl_ctx, SYSCTL_CHILDREN(softc->sysctl_tree), 757 OID_AUTO, "rotating", CTLFLAG_RD, &nda_rotating_media, 1, 758 "Rotating media"); 759 760 SYSCTL_ADD_PROC(&softc->sysctl_ctx, SYSCTL_CHILDREN(softc->sysctl_tree), 761 OID_AUTO, "flags", CTLTYPE_STRING | CTLFLAG_RD | CTLFLAG_MPSAFE, 762 softc, 0, ndaflagssysctl, "A", 763 "Flags for drive"); 764 765 #ifdef CAM_IO_STATS 766 softc->sysctl_stats_tree = SYSCTL_ADD_NODE(&softc->sysctl_stats_ctx, 767 SYSCTL_CHILDREN(softc->sysctl_tree), OID_AUTO, "stats", 768 CTLFLAG_RD | CTLFLAG_MPSAFE, 0, "Statistics"); 769 if (softc->sysctl_stats_tree == NULL) { 770 printf("ndasysctlinit: unable to allocate sysctl tree for stats\n"); 771 cam_periph_release(periph); 772 return; 773 } 774 SYSCTL_ADD_INT(&softc->sysctl_stats_ctx, 775 SYSCTL_CHILDREN(softc->sysctl_stats_tree), 776 OID_AUTO, "timeouts", CTLFLAG_RD, 777 &softc->timeouts, 0, 778 "Device timeouts reported by the SIM"); 779 SYSCTL_ADD_INT(&softc->sysctl_stats_ctx, 780 SYSCTL_CHILDREN(softc->sysctl_stats_tree), 781 OID_AUTO, "errors", CTLFLAG_RD, 782 &softc->errors, 0, 783 "Transport errors reported by the SIM."); 784 SYSCTL_ADD_INT(&softc->sysctl_stats_ctx, 785 SYSCTL_CHILDREN(softc->sysctl_stats_tree), 786 OID_AUTO, "pack_invalidations", CTLFLAG_RD, 787 &softc->invalidations, 0, 788 "Device pack invalidations."); 789 #endif 790 791 #ifdef CAM_TEST_FAILURE 792 SYSCTL_ADD_PROC(&softc->sysctl_ctx, SYSCTL_CHILDREN(softc->sysctl_tree), 793 OID_AUTO, "invalidate", CTLTYPE_U64 | CTLFLAG_RW | CTLFLAG_MPSAFE, 794 periph, 0, cam_periph_invalidate_sysctl, "I", 795 "Write 1 to invalidate the drive immediately"); 796 #endif 797 798 cam_iosched_sysctl_init(softc->cam_iosched, &softc->sysctl_ctx, 799 softc->sysctl_tree); 800 801 cam_periph_release(periph); 802 } 803 804 static int 805 ndaflagssysctl(SYSCTL_HANDLER_ARGS) 806 { 807 struct sbuf sbuf; 808 struct nda_softc *softc = arg1; 809 int error; 810 811 sbuf_new_for_sysctl(&sbuf, NULL, 0, req); 812 if (softc->flags != 0) 813 sbuf_printf(&sbuf, "0x%b", (unsigned)softc->flags, NDA_FLAG_STRING); 814 else 815 sbuf_putc(&sbuf, '0'); 816 error = sbuf_finish(&sbuf); 817 sbuf_delete(&sbuf); 818 819 return (error); 820 } 821 822 static int 823 ndagetattr(struct bio *bp) 824 { 825 int ret; 826 struct cam_periph *periph; 827 828 if (g_handleattr_int(bp, "GEOM::canspeedup", nda_enable_biospeedup)) 829 return (EJUSTRETURN); 830 831 periph = (struct cam_periph *)bp->bio_disk->d_drv1; 832 cam_periph_lock(periph); 833 ret = xpt_getattr(bp->bio_data, bp->bio_length, bp->bio_attribute, 834 periph->path); 835 cam_periph_unlock(periph); 836 if (ret == 0) 837 bp->bio_completed = bp->bio_length; 838 return ret; 839 } 840 841 static cam_status 842 ndaregister(struct cam_periph *periph, void *arg) 843 { 844 struct nda_softc *softc; 845 struct disk *disk; 846 struct ccb_pathinq cpi; 847 const struct nvme_namespace_data *nsd; 848 const struct nvme_controller_data *cd; 849 char announce_buf[80]; 850 uint8_t flbas_fmt, lbads, vwc_present; 851 u_int maxio; 852 int quirks; 853 854 nsd = nvme_get_identify_ns(periph); 855 cd = nvme_get_identify_cntrl(periph); 856 857 softc = (struct nda_softc *)malloc(sizeof(*softc), M_DEVBUF, 858 M_NOWAIT | M_ZERO); 859 860 if (softc == NULL) { 861 printf("ndaregister: Unable to probe new device. " 862 "Unable to allocate softc\n"); 863 return(CAM_REQ_CMP_ERR); 864 } 865 866 /* ident_data parsing */ 867 868 periph->softc = softc; 869 softc->quirks = NDA_Q_NONE; 870 xpt_path_inq(&cpi, periph->path); 871 TASK_INIT(&softc->sysctl_task, 0, ndasysctlinit, periph); 872 873 /* 874 * The name space ID is the lun, save it for later I/O 875 */ 876 softc->nsid = (uint32_t)xpt_path_lun_id(periph->path); 877 878 /* 879 * Register this media as a disk 880 */ 881 (void)cam_periph_acquire(periph); 882 cam_periph_unlock(periph); 883 snprintf(announce_buf, sizeof(announce_buf), 884 "kern.cam.nda.%d.quirks", periph->unit_number); 885 quirks = softc->quirks; 886 TUNABLE_INT_FETCH(announce_buf, &quirks); 887 softc->quirks = quirks; 888 softc->disk = disk = disk_alloc(); 889 disk->d_rotation_rate = DISK_RR_NON_ROTATING; 890 disk->d_open = ndaopen; 891 disk->d_close = ndaclose; 892 disk->d_strategy = ndastrategy; 893 disk->d_ioctl = ndaioctl; 894 disk->d_getattr = ndagetattr; 895 if (cam_sim_pollable(periph->sim)) 896 disk->d_dump = ndadump; 897 disk->d_gone = ndadiskgonecb; 898 disk->d_name = "nda"; 899 disk->d_drv1 = periph; 900 disk->d_unit = periph->unit_number; 901 maxio = cpi.maxio; /* Honor max I/O size of SIM */ 902 if (maxio == 0) 903 maxio = DFLTPHYS; /* traditional default */ 904 else if (maxio > maxphys) 905 maxio = maxphys; /* for safety */ 906 disk->d_maxsize = maxio; 907 flbas_fmt = NVMEV(NVME_NS_DATA_FLBAS_FORMAT, nsd->flbas); 908 lbads = NVMEV(NVME_NS_DATA_LBAF_LBADS, nsd->lbaf[flbas_fmt]); 909 disk->d_sectorsize = 1 << lbads; 910 disk->d_mediasize = (off_t)(disk->d_sectorsize * nsd->nsze); 911 disk->d_delmaxsize = disk->d_mediasize; 912 disk->d_flags = DISKFLAG_DIRECT_COMPLETION; 913 if (nvme_ctrlr_has_dataset_mgmt(cd)) 914 disk->d_flags |= DISKFLAG_CANDELETE; 915 vwc_present = NVMEV(NVME_CTRLR_DATA_VWC_PRESENT, cd->vwc); 916 if (vwc_present) 917 disk->d_flags |= DISKFLAG_CANFLUSHCACHE; 918 if ((cpi.hba_misc & PIM_UNMAPPED) != 0) { 919 disk->d_flags |= DISKFLAG_UNMAPPED_BIO; 920 softc->unmappedio = 1; 921 } 922 /* 923 * d_ident and d_descr are both far bigger than the length of either 924 * the serial or model number strings. 925 */ 926 cam_strvis_flag(disk->d_descr, cd->mn, NVME_MODEL_NUMBER_LENGTH, 927 sizeof(disk->d_descr), CAM_STRVIS_FLAG_NONASCII_SPC); 928 929 cam_strvis_flag(disk->d_ident, cd->sn, NVME_SERIAL_NUMBER_LENGTH, 930 sizeof(disk->d_ident), CAM_STRVIS_FLAG_NONASCII_SPC); 931 932 disk->d_hba_vendor = cpi.hba_vendor; 933 disk->d_hba_device = cpi.hba_device; 934 disk->d_hba_subvendor = cpi.hba_subvendor; 935 disk->d_hba_subdevice = cpi.hba_subdevice; 936 snprintf(disk->d_attachment, sizeof(disk->d_attachment), 937 "%s%d", cpi.dev_name, cpi.unit_number); 938 if (NVMEV(NVME_NS_DATA_NSFEAT_NPVALID, nsd->nsfeat) != 0 && 939 nsd->npwg != 0) 940 disk->d_stripesize = ((nsd->npwg + 1) * disk->d_sectorsize); 941 else 942 disk->d_stripesize = nsd->noiob * disk->d_sectorsize; 943 disk->d_stripeoffset = 0; 944 disk->d_devstat = devstat_new_entry(periph->periph_name, 945 periph->unit_number, disk->d_sectorsize, 946 DEVSTAT_ALL_SUPPORTED, 947 DEVSTAT_TYPE_DIRECT | XPORT_DEVSTAT_TYPE(cpi.transport), 948 DEVSTAT_PRIORITY_DISK); 949 950 if (cam_iosched_init(&softc->cam_iosched, periph, disk, 951 ndaschedule) != 0) { 952 printf("ndaregister: Unable to probe new device. " 953 "Unable to allocate iosched memory\n"); 954 free(softc, M_DEVBUF); 955 return(CAM_REQ_CMP_ERR); 956 } 957 cam_iosched_set_sort_queue(softc->cam_iosched, 0); 958 959 /* 960 * Add alias for older nvd drives to ease transition. 961 */ 962 if (nda_nvd_compat) 963 disk_add_alias(disk, "nvd"); 964 965 cam_periph_lock(periph); 966 967 snprintf(announce_buf, sizeof(announce_buf), 968 "%juMB (%ju %u byte sectors)", 969 (uintmax_t)((uintmax_t)disk->d_mediasize / (1024*1024)), 970 (uintmax_t)disk->d_mediasize / disk->d_sectorsize, 971 disk->d_sectorsize); 972 xpt_announce_periph(periph, announce_buf); 973 xpt_announce_quirks(periph, softc->quirks, NDA_Q_BIT_STRING); 974 975 /* 976 * Create our sysctl variables, now that we know 977 * we have successfully attached. 978 */ 979 if (cam_periph_acquire(periph) == 0) 980 taskqueue_enqueue(taskqueue_thread, &softc->sysctl_task); 981 982 /* 983 * Register for device going away and info about the drive 984 * changing (though with NVMe, it can't) 985 */ 986 xpt_register_async(AC_LOST_DEVICE | AC_ADVINFO_CHANGED, 987 ndaasync, periph, periph->path); 988 989 softc->state = NDA_STATE_NORMAL; 990 991 /* 992 * We'll release this reference once GEOM calls us back via 993 * ndadiskgonecb(), telling us that our provider has been freed. 994 */ 995 if (cam_periph_acquire(periph) == 0) 996 disk_create(softc->disk, DISK_VERSION); 997 998 cam_periph_release_locked(periph); 999 return(CAM_REQ_CMP); 1000 } 1001 1002 static void 1003 ndastart(struct cam_periph *periph, union ccb *start_ccb) 1004 { 1005 struct nda_softc *softc = (struct nda_softc *)periph->softc; 1006 struct ccb_nvmeio *nvmeio = &start_ccb->nvmeio; 1007 1008 CAM_DEBUG(periph->path, CAM_DEBUG_TRACE, ("ndastart\n")); 1009 1010 switch (softc->state) { 1011 case NDA_STATE_NORMAL: 1012 { 1013 struct bio *bp; 1014 1015 bp = cam_iosched_next_bio(softc->cam_iosched); 1016 CAM_DEBUG(periph->path, CAM_DEBUG_TRACE, ("ndastart: bio %p\n", bp)); 1017 if (bp == NULL) { 1018 xpt_release_ccb(start_ccb); 1019 break; 1020 } 1021 1022 switch (bp->bio_cmd) { 1023 case BIO_WRITE: 1024 softc->flags |= NDA_FLAG_DIRTY; 1025 /* FALLTHROUGH */ 1026 case BIO_READ: 1027 { 1028 #ifdef CAM_TEST_FAILURE 1029 int fail = 0; 1030 1031 /* 1032 * Support the failure ioctls. If the command is a 1033 * read, and there are pending forced read errors, or 1034 * if a write and pending write errors, then fail this 1035 * operation with EIO. This is useful for testing 1036 * purposes. Also, support having every Nth read fail. 1037 * 1038 * This is a rather blunt tool. 1039 */ 1040 if (bp->bio_cmd == BIO_READ) { 1041 if (softc->force_read_error) { 1042 softc->force_read_error--; 1043 fail = 1; 1044 } 1045 if (softc->periodic_read_error > 0) { 1046 if (++softc->periodic_read_count >= 1047 softc->periodic_read_error) { 1048 softc->periodic_read_count = 0; 1049 fail = 1; 1050 } 1051 } 1052 } else { 1053 if (softc->force_write_error) { 1054 softc->force_write_error--; 1055 fail = 1; 1056 } 1057 } 1058 if (fail) { 1059 biofinish(bp, NULL, EIO); 1060 xpt_release_ccb(start_ccb); 1061 ndaschedule(periph); 1062 return; 1063 } 1064 #endif 1065 KASSERT((bp->bio_flags & BIO_UNMAPPED) == 0 || 1066 round_page(bp->bio_bcount + bp->bio_ma_offset) / 1067 PAGE_SIZE == bp->bio_ma_n, 1068 ("Short bio %p", bp)); 1069 nda_nvme_rw_bio(softc, &start_ccb->nvmeio, bp, bp->bio_cmd == BIO_READ ? 1070 NVME_OPC_READ : NVME_OPC_WRITE); 1071 break; 1072 } 1073 case BIO_DELETE: 1074 { 1075 struct nvme_dsm_range *dsm_range, *dsm_end; 1076 struct nda_trim_request *trim; 1077 struct bio *bp1; 1078 int ents; 1079 uint32_t totalcount = 0, ranges = 0; 1080 1081 trim = malloc(sizeof(*trim), M_NVMEDA, M_ZERO | M_NOWAIT); 1082 if (trim == NULL) { 1083 /* 1084 * We have to drop the periph lock when 1085 * returning ENOMEM. g_io_deliver treats these 1086 * request differently and will recursively call 1087 * the start routine which causes us to get into 1088 * ndastrategy with the periph lock held, 1089 * leading to a panic when its acquired again. 1090 */ 1091 cam_periph_unlock(periph); 1092 biofinish(bp, NULL, ENOMEM); 1093 cam_periph_lock(periph); 1094 xpt_release_ccb(start_ccb); 1095 ndaschedule(periph); 1096 return; 1097 } 1098 TAILQ_INIT(&trim->bps); 1099 bp1 = bp; 1100 ents = min(nitems(trim->dsm), nda_max_trim_entries); 1101 ents = max(ents, 1); 1102 dsm_range = trim->dsm; 1103 dsm_end = dsm_range + ents; 1104 do { 1105 TAILQ_INSERT_TAIL(&trim->bps, bp1, bio_queue); 1106 dsm_range->length = 1107 htole32(bp1->bio_bcount / softc->disk->d_sectorsize); 1108 dsm_range->starting_lba = 1109 htole64(bp1->bio_offset / softc->disk->d_sectorsize); 1110 ranges++; 1111 totalcount += dsm_range->length; 1112 dsm_range++; 1113 if (dsm_range >= dsm_end) 1114 break; 1115 bp1 = cam_iosched_next_trim(softc->cam_iosched); 1116 /* XXX -- Could collapse adjacent ranges, but we don't for now */ 1117 /* XXX -- Could limit based on total payload size */ 1118 } while (bp1 != NULL); 1119 start_ccb->ccb_trim = trim; 1120 nda_nvme_trim(softc, &start_ccb->nvmeio, trim->dsm, 1121 dsm_range - trim->dsm); 1122 start_ccb->ccb_state = NDA_CCB_TRIM; 1123 softc->trim_count++; 1124 softc->trim_ranges += ranges; 1125 softc->trim_lbas += totalcount; 1126 /* 1127 * Note: We can have multiple TRIMs in flight, so we don't call 1128 * cam_iosched_submit_trim(softc->cam_iosched); 1129 * since that forces the I/O scheduler to only schedule one at a time. 1130 * On NVMe drives, this is a performance disaster. 1131 */ 1132 goto out; 1133 } 1134 case BIO_FLUSH: 1135 nda_nvme_flush(softc, nvmeio); 1136 break; 1137 default: 1138 biofinish(bp, NULL, EOPNOTSUPP); 1139 xpt_release_ccb(start_ccb); 1140 ndaschedule(periph); 1141 return; 1142 } 1143 start_ccb->ccb_state = NDA_CCB_BUFFER_IO; 1144 start_ccb->ccb_bp = bp; 1145 out: 1146 start_ccb->ccb_h.flags |= CAM_UNLOCKED; 1147 softc->outstanding_cmds++; 1148 softc->refcount++; /* For submission only */ 1149 cam_periph_unlock(periph); 1150 xpt_action(start_ccb); 1151 cam_periph_lock(periph); 1152 softc->refcount--; /* Submission done */ 1153 1154 /* May have more work to do, so ensure we stay scheduled */ 1155 ndaschedule(periph); 1156 break; 1157 } 1158 } 1159 } 1160 1161 static void 1162 ndadone(struct cam_periph *periph, union ccb *done_ccb) 1163 { 1164 struct nda_softc *softc; 1165 struct ccb_nvmeio *nvmeio = &done_ccb->nvmeio; 1166 struct cam_path *path; 1167 int state; 1168 1169 softc = (struct nda_softc *)periph->softc; 1170 path = done_ccb->ccb_h.path; 1171 1172 CAM_DEBUG(path, CAM_DEBUG_TRACE, ("ndadone\n")); 1173 1174 state = nvmeio->ccb_state & NDA_CCB_TYPE_MASK; 1175 switch (state) { 1176 case NDA_CCB_BUFFER_IO: 1177 case NDA_CCB_TRIM: 1178 { 1179 int error; 1180 1181 cam_periph_lock(periph); 1182 if ((done_ccb->ccb_h.status & CAM_STATUS_MASK) != CAM_REQ_CMP) { 1183 error = ndaerror(done_ccb, 0, 0); 1184 if (error == ERESTART) { 1185 /* A retry was scheduled, so just return. */ 1186 cam_periph_unlock(periph); 1187 return; 1188 } 1189 if ((done_ccb->ccb_h.status & CAM_DEV_QFRZN) != 0) 1190 cam_release_devq(path, 1191 /*relsim_flags*/0, 1192 /*reduction*/0, 1193 /*timeout*/0, 1194 /*getcount_only*/0); 1195 } else { 1196 if ((done_ccb->ccb_h.status & CAM_DEV_QFRZN) != 0) 1197 panic("REQ_CMP with QFRZN"); 1198 error = 0; 1199 } 1200 if (state == NDA_CCB_BUFFER_IO) { 1201 struct bio *bp; 1202 1203 bp = (struct bio *)done_ccb->ccb_bp; 1204 bp->bio_error = error; 1205 if (error != 0) { 1206 bp->bio_resid = bp->bio_bcount; 1207 bp->bio_flags |= BIO_ERROR; 1208 } else { 1209 bp->bio_resid = 0; 1210 } 1211 softc->outstanding_cmds--; 1212 1213 /* 1214 * We need to call cam_iosched before we call biodone so that we 1215 * don't measure any activity that happens in the completion 1216 * routine, which in the case of sendfile can be quite 1217 * extensive. 1218 */ 1219 cam_iosched_bio_complete(softc->cam_iosched, bp, done_ccb); 1220 xpt_release_ccb(done_ccb); 1221 ndaschedule(periph); 1222 cam_periph_unlock(periph); 1223 biodone(bp); 1224 } else { /* state == NDA_CCB_TRIM */ 1225 struct nda_trim_request *trim; 1226 struct bio *bp1, *bp2; 1227 TAILQ_HEAD(, bio) queue; 1228 1229 trim = nvmeio->ccb_trim; 1230 TAILQ_INIT(&queue); 1231 TAILQ_CONCAT(&queue, &trim->bps, bio_queue); 1232 free(trim, M_NVMEDA); 1233 1234 /* 1235 * Since we can have multiple trims in flight, we don't 1236 * need to call this here. 1237 * cam_iosched_trim_done(softc->cam_iosched); 1238 */ 1239 /* 1240 * The the I/O scheduler that we're finishing the I/O 1241 * so we can keep book. The first one we pass in the CCB 1242 * which has the timing information. The rest we pass in NULL 1243 * so we can keep proper counts. 1244 */ 1245 bp1 = TAILQ_FIRST(&queue); 1246 cam_iosched_bio_complete(softc->cam_iosched, bp1, done_ccb); 1247 xpt_release_ccb(done_ccb); 1248 softc->outstanding_cmds--; 1249 ndaschedule(periph); 1250 cam_periph_unlock(periph); 1251 while ((bp2 = TAILQ_FIRST(&queue)) != NULL) { 1252 TAILQ_REMOVE(&queue, bp2, bio_queue); 1253 bp2->bio_error = error; 1254 if (error != 0) { 1255 bp2->bio_flags |= BIO_ERROR; 1256 bp2->bio_resid = bp1->bio_bcount; 1257 } else 1258 bp2->bio_resid = 0; 1259 if (bp1 != bp2) 1260 cam_iosched_bio_complete(softc->cam_iosched, bp2, NULL); 1261 biodone(bp2); 1262 } 1263 } 1264 return; 1265 } 1266 case NDA_CCB_DUMP: 1267 /* No-op. We're polling */ 1268 return; 1269 case NDA_CCB_PASS: 1270 /* NVME_PASSTHROUGH_CMD runs this CCB and releases it */ 1271 return; 1272 default: 1273 break; 1274 } 1275 xpt_release_ccb(done_ccb); 1276 } 1277 1278 static int 1279 ndaerror(union ccb *ccb, uint32_t cam_flags, uint32_t sense_flags) 1280 { 1281 #ifdef CAM_IO_STATS 1282 struct nda_softc *softc; 1283 struct cam_periph *periph; 1284 1285 periph = xpt_path_periph(ccb->ccb_h.path); 1286 softc = (struct nda_softc *)periph->softc; 1287 #endif 1288 1289 switch (ccb->ccb_h.status & CAM_STATUS_MASK) { 1290 case CAM_CMD_TIMEOUT: 1291 #ifdef CAM_IO_STATS 1292 softc->timeouts++; 1293 #endif 1294 break; 1295 case CAM_REQ_CMP_ERR: 1296 case CAM_NVME_STATUS_ERROR: 1297 #ifdef CAM_IO_STATS 1298 softc->errors++; 1299 #endif 1300 break; 1301 default: 1302 break; 1303 } 1304 1305 return(cam_periph_error(ccb, cam_flags, sense_flags)); 1306 } 1307 1308 /* 1309 * Step through all NDA peripheral drivers, and if the device is still open, 1310 * sync the disk cache to physical media. 1311 */ 1312 static void 1313 ndaflush(void) 1314 { 1315 struct cam_periph *periph; 1316 struct nda_softc *softc; 1317 union ccb *ccb; 1318 int error; 1319 1320 CAM_PERIPH_FOREACH(periph, &ndadriver) { 1321 softc = (struct nda_softc *)periph->softc; 1322 1323 if (SCHEDULER_STOPPED()) { 1324 /* 1325 * If we panicked with the lock held or the periph is not 1326 * open, do not recurse. Otherwise, call ndadump since 1327 * that avoids the sleeping cam_periph_getccb does if no 1328 * CCBs are available. 1329 */ 1330 if (!cam_periph_owned(periph) && 1331 (softc->flags & NDA_FLAG_OPEN)) { 1332 ndadump(softc->disk, NULL, 0, 0); 1333 } 1334 continue; 1335 } 1336 1337 /* 1338 * We only sync the cache if the drive is still open 1339 */ 1340 cam_periph_lock(periph); 1341 if ((softc->flags & NDA_FLAG_OPEN) == 0) { 1342 cam_periph_unlock(periph); 1343 continue; 1344 } 1345 1346 ccb = cam_periph_getccb(periph, CAM_PRIORITY_NORMAL); 1347 nda_nvme_flush(softc, &ccb->nvmeio); 1348 error = cam_periph_runccb(ccb, ndaerror, /*cam_flags*/0, 1349 /*sense_flags*/ SF_NO_RECOVERY | SF_NO_RETRY, 1350 softc->disk->d_devstat); 1351 if (error != 0) 1352 xpt_print(periph->path, "Synchronize cache failed\n"); 1353 xpt_release_ccb(ccb); 1354 cam_periph_unlock(periph); 1355 } 1356 } 1357 1358 static void 1359 ndashutdown(void *arg, int howto) 1360 { 1361 1362 if ((howto & RB_NOSYNC) != 0) 1363 return; 1364 1365 ndaflush(); 1366 } 1367 1368 static void 1369 ndasuspend(void *arg, enum power_stype stype) 1370 { 1371 1372 ndaflush(); 1373 } 1374