1 /*- 2 * SPDX-License-Identifier: BSD-2-Clause-FreeBSD 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 * without modification, immediately at the beginning of the file. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 17 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 18 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 19 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 20 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 21 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 22 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 23 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 24 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 25 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 26 * 27 * Derived from ata_da.c: 28 * Copyright (c) 2009 Alexander Motin <mav@FreeBSD.org> 29 */ 30 31 #include <sys/cdefs.h> 32 __FBSDID("$FreeBSD$"); 33 34 #include <sys/param.h> 35 36 #ifdef _KERNEL 37 #include <sys/systm.h> 38 #include <sys/kernel.h> 39 #include <sys/bio.h> 40 #include <sys/sysctl.h> 41 #include <sys/taskqueue.h> 42 #include <sys/lock.h> 43 #include <sys/mutex.h> 44 #include <sys/conf.h> 45 #include <sys/devicestat.h> 46 #include <sys/eventhandler.h> 47 #include <sys/malloc.h> 48 #include <sys/cons.h> 49 #include <sys/proc.h> 50 #include <sys/reboot.h> 51 #include <sys/sbuf.h> 52 #include <geom/geom.h> 53 #include <geom/geom_disk.h> 54 #endif /* _KERNEL */ 55 56 #ifndef _KERNEL 57 #include <stdio.h> 58 #include <string.h> 59 #endif /* _KERNEL */ 60 61 #include <cam/cam.h> 62 #include <cam/cam_ccb.h> 63 #include <cam/cam_periph.h> 64 #include <cam/cam_xpt_periph.h> 65 #include <cam/cam_sim.h> 66 #include <cam/cam_iosched.h> 67 68 #include <cam/nvme/nvme_all.h> 69 70 typedef enum { 71 NDA_STATE_NORMAL 72 } nda_state; 73 74 typedef enum { 75 NDA_FLAG_OPEN = 0x0001, 76 NDA_FLAG_DIRTY = 0x0002, 77 NDA_FLAG_SCTX_INIT = 0x0004, 78 } nda_flags; 79 #define NDA_FLAG_STRING \ 80 "\020" \ 81 "\001OPEN" \ 82 "\002DIRTY" \ 83 "\003SCTX_INIT" 84 85 typedef enum { 86 NDA_Q_4K = 0x01, 87 NDA_Q_NONE = 0x00, 88 } nda_quirks; 89 90 #define NDA_Q_BIT_STRING \ 91 "\020" \ 92 "\001Bit 0" 93 94 typedef enum { 95 NDA_CCB_BUFFER_IO = 0x01, 96 NDA_CCB_DUMP = 0x02, 97 NDA_CCB_TRIM = 0x03, 98 NDA_CCB_PASS = 0x04, 99 NDA_CCB_TYPE_MASK = 0x0F, 100 } nda_ccb_state; 101 102 /* Offsets into our private area for storing information */ 103 #define ccb_state ccb_h.ppriv_field0 104 #define ccb_bp ccb_h.ppriv_ptr1 /* For NDA_CCB_BUFFER_IO */ 105 #define ccb_trim ccb_h.ppriv_ptr1 /* For NDA_CCB_TRIM */ 106 107 struct nda_softc { 108 struct cam_iosched_softc *cam_iosched; 109 int outstanding_cmds; /* Number of active commands */ 110 int refcount; /* Active xpt_action() calls */ 111 nda_state state; 112 nda_flags flags; 113 nda_quirks quirks; 114 int unmappedio; 115 quad_t deletes; 116 uint32_t nsid; /* Namespace ID for this nda device */ 117 struct disk *disk; 118 struct task sysctl_task; 119 struct sysctl_ctx_list sysctl_ctx; 120 struct sysctl_oid *sysctl_tree; 121 uint64_t trim_count; 122 uint64_t trim_ranges; 123 uint64_t trim_lbas; 124 #ifdef CAM_TEST_FAILURE 125 int force_read_error; 126 int force_write_error; 127 int periodic_read_error; 128 int periodic_read_count; 129 #endif 130 #ifdef CAM_IO_STATS 131 struct sysctl_ctx_list sysctl_stats_ctx; 132 struct sysctl_oid *sysctl_stats_tree; 133 u_int timeouts; 134 u_int errors; 135 u_int invalidations; 136 #endif 137 }; 138 139 struct nda_trim_request { 140 struct nvme_dsm_range dsm[NVME_MAX_DSM_TRIM / sizeof(struct nvme_dsm_range)]; 141 TAILQ_HEAD(, bio) bps; 142 }; 143 _Static_assert(NVME_MAX_DSM_TRIM % sizeof(struct nvme_dsm_range) == 0, 144 "NVME_MAX_DSM_TRIM must be an integral number of ranges"); 145 146 /* Need quirk table */ 147 148 static disk_ioctl_t ndaioctl; 149 static disk_strategy_t ndastrategy; 150 static dumper_t ndadump; 151 static periph_init_t ndainit; 152 static void ndaasync(void *callback_arg, u_int32_t code, 153 struct cam_path *path, void *arg); 154 static void ndasysctlinit(void *context, int pending); 155 static int ndaflagssysctl(SYSCTL_HANDLER_ARGS); 156 static periph_ctor_t ndaregister; 157 static periph_dtor_t ndacleanup; 158 static periph_start_t ndastart; 159 static periph_oninv_t ndaoninvalidate; 160 static void ndadone(struct cam_periph *periph, 161 union ccb *done_ccb); 162 static int ndaerror(union ccb *ccb, u_int32_t cam_flags, 163 u_int32_t sense_flags); 164 static void ndashutdown(void *arg, int howto); 165 static void ndasuspend(void *arg); 166 167 #ifndef NDA_DEFAULT_SEND_ORDERED 168 #define NDA_DEFAULT_SEND_ORDERED 1 169 #endif 170 #ifndef NDA_DEFAULT_TIMEOUT 171 #define NDA_DEFAULT_TIMEOUT 30 /* Timeout in seconds */ 172 #endif 173 #ifndef NDA_DEFAULT_RETRY 174 #define NDA_DEFAULT_RETRY 4 175 #endif 176 #ifndef NDA_MAX_TRIM_ENTRIES 177 #define NDA_MAX_TRIM_ENTRIES (NVME_MAX_DSM_TRIM / sizeof(struct nvme_dsm_range))/* Number of DSM trims to use, max 256 */ 178 #endif 179 180 static SYSCTL_NODE(_kern_cam, OID_AUTO, nda, CTLFLAG_RD | CTLFLAG_MPSAFE, 0, 181 "CAM Direct Access Disk driver"); 182 183 //static int nda_retry_count = NDA_DEFAULT_RETRY; 184 static int nda_send_ordered = NDA_DEFAULT_SEND_ORDERED; 185 static int nda_default_timeout = NDA_DEFAULT_TIMEOUT; 186 static int nda_max_trim_entries = NDA_MAX_TRIM_ENTRIES; 187 static int nda_enable_biospeedup = 1; 188 static int nda_nvd_compat = 1; 189 SYSCTL_INT(_kern_cam_nda, OID_AUTO, max_trim, CTLFLAG_RDTUN, 190 &nda_max_trim_entries, NDA_MAX_TRIM_ENTRIES, 191 "Maximum number of BIO_DELETE to send down as a DSM TRIM."); 192 SYSCTL_INT(_kern_cam_nda, OID_AUTO, enable_biospeedup, CTLFLAG_RDTUN, 193 &nda_enable_biospeedup, 0, "Enable BIO_SPEEDUP processing."); 194 SYSCTL_INT(_kern_cam_nda, OID_AUTO, nvd_compat, CTLFLAG_RDTUN, 195 &nda_nvd_compat, 1, "Enable creation of nvd aliases."); 196 197 /* 198 * All NVMe media is non-rotational, so all nvme device instances 199 * share this to implement the sysctl. 200 */ 201 static int nda_rotating_media = 0; 202 203 static struct periph_driver ndadriver = 204 { 205 ndainit, "nda", 206 TAILQ_HEAD_INITIALIZER(ndadriver.units), /* generation */ 0 207 }; 208 209 PERIPHDRIVER_DECLARE(nda, ndadriver); 210 211 static MALLOC_DEFINE(M_NVMEDA, "nvme_da", "nvme_da buffers"); 212 213 /* 214 * nice wrappers. Maybe these belong in nvme_all.c instead of 215 * here, but this is the only place that uses these. Should 216 * we ever grow another NVME periph, we should move them 217 * all there wholesale. 218 */ 219 220 static void 221 nda_nvme_flush(struct nda_softc *softc, struct ccb_nvmeio *nvmeio) 222 { 223 cam_fill_nvmeio(nvmeio, 224 0, /* retries */ 225 ndadone, /* cbfcnp */ 226 CAM_DIR_NONE, /* flags */ 227 NULL, /* data_ptr */ 228 0, /* dxfer_len */ 229 nda_default_timeout * 1000); /* timeout 30s */ 230 nvme_ns_flush_cmd(&nvmeio->cmd, softc->nsid); 231 } 232 233 static void 234 nda_nvme_trim(struct nda_softc *softc, struct ccb_nvmeio *nvmeio, 235 void *payload, uint32_t num_ranges) 236 { 237 cam_fill_nvmeio(nvmeio, 238 0, /* retries */ 239 ndadone, /* cbfcnp */ 240 CAM_DIR_OUT, /* flags */ 241 payload, /* data_ptr */ 242 num_ranges * sizeof(struct nvme_dsm_range), /* dxfer_len */ 243 nda_default_timeout * 1000); /* timeout 30s */ 244 nvme_ns_trim_cmd(&nvmeio->cmd, softc->nsid, num_ranges); 245 } 246 247 static void 248 nda_nvme_write(struct nda_softc *softc, struct ccb_nvmeio *nvmeio, 249 void *payload, uint64_t lba, uint32_t len, uint32_t count) 250 { 251 cam_fill_nvmeio(nvmeio, 252 0, /* retries */ 253 ndadone, /* cbfcnp */ 254 CAM_DIR_OUT, /* flags */ 255 payload, /* data_ptr */ 256 len, /* dxfer_len */ 257 nda_default_timeout * 1000); /* timeout 30s */ 258 nvme_ns_write_cmd(&nvmeio->cmd, softc->nsid, lba, count); 259 } 260 261 static void 262 nda_nvme_rw_bio(struct nda_softc *softc, struct ccb_nvmeio *nvmeio, 263 struct bio *bp, uint32_t rwcmd) 264 { 265 int flags = rwcmd == NVME_OPC_READ ? CAM_DIR_IN : CAM_DIR_OUT; 266 void *payload; 267 uint64_t lba; 268 uint32_t count; 269 270 if (bp->bio_flags & BIO_UNMAPPED) { 271 flags |= CAM_DATA_BIO; 272 payload = bp; 273 } else { 274 payload = bp->bio_data; 275 } 276 277 lba = bp->bio_pblkno; 278 count = bp->bio_bcount / softc->disk->d_sectorsize; 279 280 cam_fill_nvmeio(nvmeio, 281 0, /* retries */ 282 ndadone, /* cbfcnp */ 283 flags, /* flags */ 284 payload, /* data_ptr */ 285 bp->bio_bcount, /* dxfer_len */ 286 nda_default_timeout * 1000); /* timeout 30s */ 287 nvme_ns_rw_cmd(&nvmeio->cmd, rwcmd, softc->nsid, lba, count); 288 } 289 290 static int 291 ndaopen(struct disk *dp) 292 { 293 struct cam_periph *periph; 294 struct nda_softc *softc; 295 int error; 296 297 periph = (struct cam_periph *)dp->d_drv1; 298 if (cam_periph_acquire(periph) != 0) { 299 return(ENXIO); 300 } 301 302 cam_periph_lock(periph); 303 if ((error = cam_periph_hold(periph, PRIBIO|PCATCH)) != 0) { 304 cam_periph_unlock(periph); 305 cam_periph_release(periph); 306 return (error); 307 } 308 309 CAM_DEBUG(periph->path, CAM_DEBUG_TRACE | CAM_DEBUG_PERIPH, 310 ("ndaopen\n")); 311 312 softc = (struct nda_softc *)periph->softc; 313 softc->flags |= NDA_FLAG_OPEN; 314 315 cam_periph_unhold(periph); 316 cam_periph_unlock(periph); 317 return (0); 318 } 319 320 static int 321 ndaclose(struct disk *dp) 322 { 323 struct cam_periph *periph; 324 struct nda_softc *softc; 325 union ccb *ccb; 326 int error; 327 328 periph = (struct cam_periph *)dp->d_drv1; 329 softc = (struct nda_softc *)periph->softc; 330 cam_periph_lock(periph); 331 332 CAM_DEBUG(periph->path, CAM_DEBUG_TRACE | CAM_DEBUG_PERIPH, 333 ("ndaclose\n")); 334 335 if ((softc->flags & NDA_FLAG_DIRTY) != 0 && 336 (periph->flags & CAM_PERIPH_INVALID) == 0 && 337 cam_periph_hold(periph, PRIBIO) == 0) { 338 ccb = cam_periph_getccb(periph, CAM_PRIORITY_NORMAL); 339 nda_nvme_flush(softc, &ccb->nvmeio); 340 error = cam_periph_runccb(ccb, ndaerror, /*cam_flags*/0, 341 /*sense_flags*/0, softc->disk->d_devstat); 342 343 if (error != 0) 344 xpt_print(periph->path, "Synchronize cache failed\n"); 345 else 346 softc->flags &= ~NDA_FLAG_DIRTY; 347 xpt_release_ccb(ccb); 348 cam_periph_unhold(periph); 349 } 350 351 softc->flags &= ~NDA_FLAG_OPEN; 352 353 while (softc->refcount != 0) 354 cam_periph_sleep(periph, &softc->refcount, PRIBIO, "ndaclose", 1); 355 KASSERT(softc->outstanding_cmds == 0, 356 ("nda %d outstanding commands", softc->outstanding_cmds)); 357 cam_periph_unlock(periph); 358 cam_periph_release(periph); 359 return (0); 360 } 361 362 static void 363 ndaschedule(struct cam_periph *periph) 364 { 365 struct nda_softc *softc = (struct nda_softc *)periph->softc; 366 367 if (softc->state != NDA_STATE_NORMAL) 368 return; 369 370 cam_iosched_schedule(softc->cam_iosched, periph); 371 } 372 373 static int 374 ndaioctl(struct disk *dp, u_long cmd, void *data, int fflag, 375 struct thread *td) 376 { 377 struct cam_periph *periph; 378 struct nda_softc *softc; 379 380 periph = (struct cam_periph *)dp->d_drv1; 381 softc = (struct nda_softc *)periph->softc; 382 383 switch (cmd) { 384 case NVME_IO_TEST: 385 case NVME_BIO_TEST: 386 /* 387 * These don't map well to the underlying CCBs, so 388 * they are usupported via CAM. 389 */ 390 return (ENOTTY); 391 case NVME_GET_NSID: 392 { 393 struct nvme_get_nsid *gnsid = (struct nvme_get_nsid *)data; 394 struct ccb_pathinq cpi; 395 396 xpt_path_inq(&cpi, periph->path); 397 strncpy(gnsid->cdev, cpi.xport_specific.nvme.dev_name, 398 sizeof(gnsid->cdev)); 399 gnsid->nsid = cpi.xport_specific.nvme.nsid; 400 return (0); 401 } 402 case NVME_PASSTHROUGH_CMD: 403 { 404 struct nvme_pt_command *pt; 405 union ccb *ccb; 406 struct cam_periph_map_info mapinfo; 407 u_int maxmap = dp->d_maxsize; 408 int error; 409 410 /* 411 * Create a NVME_IO CCB to do the passthrough command. 412 */ 413 pt = (struct nvme_pt_command *)data; 414 ccb = xpt_alloc_ccb(); 415 xpt_setup_ccb(&ccb->ccb_h, periph->path, CAM_PRIORITY_NORMAL); 416 ccb->ccb_state = NDA_CCB_PASS; 417 cam_fill_nvmeio(&ccb->nvmeio, 418 0, /* Retries */ 419 ndadone, 420 (pt->is_read ? CAM_DIR_IN : CAM_DIR_OUT) | CAM_DATA_VADDR, 421 pt->buf, 422 pt->len, 423 nda_default_timeout * 1000); 424 memcpy(&ccb->nvmeio.cmd, &pt->cmd, sizeof(pt->cmd)); 425 426 /* 427 * Wire the user memory in this request for the I/O 428 */ 429 memset(&mapinfo, 0, sizeof(mapinfo)); 430 error = cam_periph_mapmem(ccb, &mapinfo, maxmap); 431 if (error) 432 goto out; 433 434 /* 435 * Lock the periph and run the command. 436 */ 437 cam_periph_lock(periph); 438 cam_periph_runccb(ccb, NULL, CAM_RETRY_SELTO, 439 SF_RETRY_UA | SF_NO_PRINT, NULL); 440 441 /* 442 * Tear down mapping and return status. 443 */ 444 cam_periph_unlock(periph); 445 cam_periph_unmapmem(ccb, &mapinfo); 446 error = (ccb->ccb_h.status == CAM_REQ_CMP) ? 0 : EIO; 447 out: 448 cam_periph_lock(periph); 449 xpt_release_ccb(ccb); 450 cam_periph_unlock(periph); 451 return (error); 452 } 453 default: 454 break; 455 } 456 return (ENOTTY); 457 } 458 459 /* 460 * Actually translate the requested transfer into one the physical driver 461 * can understand. The transfer is described by a buf and will include 462 * only one physical transfer. 463 */ 464 static void 465 ndastrategy(struct bio *bp) 466 { 467 struct cam_periph *periph; 468 struct nda_softc *softc; 469 470 periph = (struct cam_periph *)bp->bio_disk->d_drv1; 471 softc = (struct nda_softc *)periph->softc; 472 473 cam_periph_lock(periph); 474 475 CAM_DEBUG(periph->path, CAM_DEBUG_TRACE, ("ndastrategy(%p)\n", bp)); 476 477 /* 478 * If the device has been made invalid, error out 479 */ 480 if ((periph->flags & CAM_PERIPH_INVALID) != 0) { 481 cam_periph_unlock(periph); 482 biofinish(bp, NULL, ENXIO); 483 return; 484 } 485 486 if (bp->bio_cmd == BIO_DELETE) 487 softc->deletes++; 488 489 /* 490 * Place it in the queue of disk activities for this disk 491 */ 492 cam_iosched_queue_work(softc->cam_iosched, bp); 493 494 /* 495 * Schedule ourselves for performing the work. 496 */ 497 ndaschedule(periph); 498 cam_periph_unlock(periph); 499 500 return; 501 } 502 503 static int 504 ndadump(void *arg, void *virtual, vm_offset_t physical, off_t offset, size_t length) 505 { 506 struct cam_periph *periph; 507 struct nda_softc *softc; 508 u_int secsize; 509 struct ccb_nvmeio nvmeio; 510 struct disk *dp; 511 uint64_t lba; 512 uint32_t count; 513 int error = 0; 514 515 dp = arg; 516 periph = dp->d_drv1; 517 softc = (struct nda_softc *)periph->softc; 518 secsize = softc->disk->d_sectorsize; 519 lba = offset / secsize; 520 count = length / secsize; 521 522 if ((periph->flags & CAM_PERIPH_INVALID) != 0) 523 return (ENXIO); 524 525 /* xpt_get_ccb returns a zero'd allocation for the ccb, mimic that here */ 526 memset(&nvmeio, 0, sizeof(nvmeio)); 527 if (length > 0) { 528 xpt_setup_ccb(&nvmeio.ccb_h, periph->path, CAM_PRIORITY_NORMAL); 529 nvmeio.ccb_state = NDA_CCB_DUMP; 530 nda_nvme_write(softc, &nvmeio, virtual, lba, length, count); 531 error = cam_periph_runccb((union ccb *)&nvmeio, cam_periph_error, 532 0, SF_NO_RECOVERY | SF_NO_RETRY, NULL); 533 if (error != 0) 534 printf("Aborting dump due to I/O error %d.\n", error); 535 536 return (error); 537 } 538 539 /* Flush */ 540 xpt_setup_ccb(&nvmeio.ccb_h, periph->path, CAM_PRIORITY_NORMAL); 541 542 nvmeio.ccb_state = NDA_CCB_DUMP; 543 nda_nvme_flush(softc, &nvmeio); 544 error = cam_periph_runccb((union ccb *)&nvmeio, cam_periph_error, 545 0, SF_NO_RECOVERY | SF_NO_RETRY, NULL); 546 if (error != 0) 547 xpt_print(periph->path, "flush cmd failed\n"); 548 return (error); 549 } 550 551 static void 552 ndainit(void) 553 { 554 cam_status status; 555 556 /* 557 * Install a global async callback. This callback will 558 * receive async callbacks like "new device found". 559 */ 560 status = xpt_register_async(AC_FOUND_DEVICE, ndaasync, NULL, NULL); 561 562 if (status != CAM_REQ_CMP) { 563 printf("nda: Failed to attach master async callback " 564 "due to status 0x%x!\n", status); 565 } else if (nda_send_ordered) { 566 /* Register our event handlers */ 567 if ((EVENTHANDLER_REGISTER(power_suspend, ndasuspend, 568 NULL, EVENTHANDLER_PRI_LAST)) == NULL) 569 printf("ndainit: power event registration failed!\n"); 570 if ((EVENTHANDLER_REGISTER(shutdown_post_sync, ndashutdown, 571 NULL, SHUTDOWN_PRI_DEFAULT)) == NULL) 572 printf("ndainit: shutdown event registration failed!\n"); 573 } 574 } 575 576 /* 577 * Callback from GEOM, called when it has finished cleaning up its 578 * resources. 579 */ 580 static void 581 ndadiskgonecb(struct disk *dp) 582 { 583 struct cam_periph *periph; 584 585 periph = (struct cam_periph *)dp->d_drv1; 586 587 cam_periph_release(periph); 588 } 589 590 static void 591 ndaoninvalidate(struct cam_periph *periph) 592 { 593 struct nda_softc *softc; 594 595 softc = (struct nda_softc *)periph->softc; 596 597 /* 598 * De-register any async callbacks. 599 */ 600 xpt_register_async(0, ndaasync, periph, periph->path); 601 #ifdef CAM_IO_STATS 602 softc->invalidations++; 603 #endif 604 605 /* 606 * Return all queued I/O with ENXIO. 607 * XXX Handle any transactions queued to the card 608 * with XPT_ABORT_CCB. 609 */ 610 cam_iosched_flush(softc->cam_iosched, NULL, ENXIO); 611 612 disk_gone(softc->disk); 613 } 614 615 static void 616 ndacleanup(struct cam_periph *periph) 617 { 618 struct nda_softc *softc; 619 620 softc = (struct nda_softc *)periph->softc; 621 622 cam_periph_unlock(periph); 623 624 cam_iosched_fini(softc->cam_iosched); 625 626 /* 627 * If we can't free the sysctl tree, oh well... 628 */ 629 if ((softc->flags & NDA_FLAG_SCTX_INIT) != 0) { 630 #ifdef CAM_IO_STATS 631 if (sysctl_ctx_free(&softc->sysctl_stats_ctx) != 0) 632 xpt_print(periph->path, 633 "can't remove sysctl stats context\n"); 634 #endif 635 if (sysctl_ctx_free(&softc->sysctl_ctx) != 0) 636 xpt_print(periph->path, 637 "can't remove sysctl context\n"); 638 } 639 640 disk_destroy(softc->disk); 641 free(softc, M_DEVBUF); 642 cam_periph_lock(periph); 643 } 644 645 static void 646 ndaasync(void *callback_arg, u_int32_t code, 647 struct cam_path *path, void *arg) 648 { 649 struct cam_periph *periph; 650 651 periph = (struct cam_periph *)callback_arg; 652 switch (code) { 653 case AC_FOUND_DEVICE: 654 { 655 struct ccb_getdev *cgd; 656 cam_status status; 657 658 cgd = (struct ccb_getdev *)arg; 659 if (cgd == NULL) 660 break; 661 662 if (cgd->protocol != PROTO_NVME) 663 break; 664 665 /* 666 * Allocate a peripheral instance for 667 * this device and start the probe 668 * process. 669 */ 670 status = cam_periph_alloc(ndaregister, ndaoninvalidate, 671 ndacleanup, ndastart, 672 "nda", CAM_PERIPH_BIO, 673 path, ndaasync, 674 AC_FOUND_DEVICE, cgd); 675 676 if (status != CAM_REQ_CMP 677 && status != CAM_REQ_INPROG) 678 printf("ndaasync: Unable to attach to new device " 679 "due to status 0x%x\n", status); 680 break; 681 } 682 case AC_ADVINFO_CHANGED: 683 { 684 uintptr_t buftype; 685 686 buftype = (uintptr_t)arg; 687 if (buftype == CDAI_TYPE_PHYS_PATH) { 688 struct nda_softc *softc; 689 690 softc = periph->softc; 691 disk_attr_changed(softc->disk, "GEOM::physpath", 692 M_NOWAIT); 693 } 694 break; 695 } 696 case AC_LOST_DEVICE: 697 default: 698 cam_periph_async(periph, code, path, arg); 699 break; 700 } 701 } 702 703 static void 704 ndasysctlinit(void *context, int pending) 705 { 706 struct cam_periph *periph; 707 struct nda_softc *softc; 708 char tmpstr[32], tmpstr2[16]; 709 710 periph = (struct cam_periph *)context; 711 712 /* periph was held for us when this task was enqueued */ 713 if ((periph->flags & CAM_PERIPH_INVALID) != 0) { 714 cam_periph_release(periph); 715 return; 716 } 717 718 softc = (struct nda_softc *)periph->softc; 719 snprintf(tmpstr, sizeof(tmpstr), "CAM NDA unit %d", periph->unit_number); 720 snprintf(tmpstr2, sizeof(tmpstr2), "%d", periph->unit_number); 721 722 sysctl_ctx_init(&softc->sysctl_ctx); 723 softc->flags |= NDA_FLAG_SCTX_INIT; 724 softc->sysctl_tree = SYSCTL_ADD_NODE_WITH_LABEL(&softc->sysctl_ctx, 725 SYSCTL_STATIC_CHILDREN(_kern_cam_nda), OID_AUTO, tmpstr2, 726 CTLFLAG_RD | CTLFLAG_MPSAFE, 0, tmpstr, "device_index"); 727 if (softc->sysctl_tree == NULL) { 728 printf("ndasysctlinit: unable to allocate sysctl tree\n"); 729 cam_periph_release(periph); 730 return; 731 } 732 733 SYSCTL_ADD_INT(&softc->sysctl_ctx, SYSCTL_CHILDREN(softc->sysctl_tree), 734 OID_AUTO, "unmapped_io", CTLFLAG_RD, 735 &softc->unmappedio, 0, "Unmapped I/O leaf"); 736 737 SYSCTL_ADD_QUAD(&softc->sysctl_ctx, SYSCTL_CHILDREN(softc->sysctl_tree), 738 OID_AUTO, "deletes", CTLFLAG_RD, 739 &softc->deletes, "Number of BIO_DELETE requests"); 740 741 SYSCTL_ADD_UQUAD(&softc->sysctl_ctx, 742 SYSCTL_CHILDREN(softc->sysctl_tree), OID_AUTO, 743 "trim_count", CTLFLAG_RD, &softc->trim_count, 744 "Total number of unmap/dsm commands sent"); 745 SYSCTL_ADD_UQUAD(&softc->sysctl_ctx, 746 SYSCTL_CHILDREN(softc->sysctl_tree), OID_AUTO, 747 "trim_ranges", CTLFLAG_RD, &softc->trim_ranges, 748 "Total number of ranges in unmap/dsm commands"); 749 SYSCTL_ADD_UQUAD(&softc->sysctl_ctx, 750 SYSCTL_CHILDREN(softc->sysctl_tree), OID_AUTO, 751 "trim_lbas", CTLFLAG_RD, &softc->trim_lbas, 752 "Total lbas in the unmap/dsm commands sent"); 753 754 SYSCTL_ADD_INT(&softc->sysctl_ctx, SYSCTL_CHILDREN(softc->sysctl_tree), 755 OID_AUTO, "rotating", CTLFLAG_RD, &nda_rotating_media, 1, 756 "Rotating media"); 757 758 SYSCTL_ADD_PROC(&softc->sysctl_ctx, SYSCTL_CHILDREN(softc->sysctl_tree), 759 OID_AUTO, "flags", CTLTYPE_STRING | CTLFLAG_RD | CTLFLAG_MPSAFE, 760 softc, 0, ndaflagssysctl, "A", 761 "Flags for drive"); 762 763 #ifdef CAM_IO_STATS 764 softc->sysctl_stats_tree = SYSCTL_ADD_NODE(&softc->sysctl_stats_ctx, 765 SYSCTL_CHILDREN(softc->sysctl_tree), OID_AUTO, "stats", 766 CTLFLAG_RD | CTLFLAG_MPSAFE, 0, "Statistics"); 767 if (softc->sysctl_stats_tree == NULL) { 768 printf("ndasysctlinit: unable to allocate sysctl tree for stats\n"); 769 cam_periph_release(periph); 770 return; 771 } 772 SYSCTL_ADD_INT(&softc->sysctl_stats_ctx, 773 SYSCTL_CHILDREN(softc->sysctl_stats_tree), 774 OID_AUTO, "timeouts", CTLFLAG_RD, 775 &softc->timeouts, 0, 776 "Device timeouts reported by the SIM"); 777 SYSCTL_ADD_INT(&softc->sysctl_stats_ctx, 778 SYSCTL_CHILDREN(softc->sysctl_stats_tree), 779 OID_AUTO, "errors", CTLFLAG_RD, 780 &softc->errors, 0, 781 "Transport errors reported by the SIM."); 782 SYSCTL_ADD_INT(&softc->sysctl_stats_ctx, 783 SYSCTL_CHILDREN(softc->sysctl_stats_tree), 784 OID_AUTO, "pack_invalidations", CTLFLAG_RD, 785 &softc->invalidations, 0, 786 "Device pack invalidations."); 787 #endif 788 789 #ifdef CAM_TEST_FAILURE 790 SYSCTL_ADD_PROC(&softc->sysctl_ctx, SYSCTL_CHILDREN(softc->sysctl_tree), 791 OID_AUTO, "invalidate", CTLTYPE_U64 | CTLFLAG_RW | CTLFLAG_MPSAFE, 792 periph, 0, cam_periph_invalidate_sysctl, "I", 793 "Write 1 to invalidate the drive immediately"); 794 #endif 795 796 cam_iosched_sysctl_init(softc->cam_iosched, &softc->sysctl_ctx, 797 softc->sysctl_tree); 798 799 cam_periph_release(periph); 800 } 801 802 static int 803 ndaflagssysctl(SYSCTL_HANDLER_ARGS) 804 { 805 struct sbuf sbuf; 806 struct nda_softc *softc = arg1; 807 int error; 808 809 sbuf_new_for_sysctl(&sbuf, NULL, 0, req); 810 if (softc->flags != 0) 811 sbuf_printf(&sbuf, "0x%b", (unsigned)softc->flags, NDA_FLAG_STRING); 812 else 813 sbuf_printf(&sbuf, "0"); 814 error = sbuf_finish(&sbuf); 815 sbuf_delete(&sbuf); 816 817 return (error); 818 } 819 820 static int 821 ndagetattr(struct bio *bp) 822 { 823 int ret; 824 struct cam_periph *periph; 825 826 if (g_handleattr_int(bp, "GEOM::canspeedup", nda_enable_biospeedup)) 827 return (EJUSTRETURN); 828 829 periph = (struct cam_periph *)bp->bio_disk->d_drv1; 830 cam_periph_lock(periph); 831 ret = xpt_getattr(bp->bio_data, bp->bio_length, bp->bio_attribute, 832 periph->path); 833 cam_periph_unlock(periph); 834 if (ret == 0) 835 bp->bio_completed = bp->bio_length; 836 return ret; 837 } 838 839 static cam_status 840 ndaregister(struct cam_periph *periph, void *arg) 841 { 842 struct nda_softc *softc; 843 struct disk *disk; 844 struct ccb_pathinq cpi; 845 const struct nvme_namespace_data *nsd; 846 const struct nvme_controller_data *cd; 847 char announce_buf[80]; 848 uint8_t flbas_fmt, lbads, vwc_present; 849 u_int maxio; 850 int quirks; 851 852 nsd = nvme_get_identify_ns(periph); 853 cd = nvme_get_identify_cntrl(periph); 854 855 softc = (struct nda_softc *)malloc(sizeof(*softc), M_DEVBUF, 856 M_NOWAIT | M_ZERO); 857 858 if (softc == NULL) { 859 printf("ndaregister: Unable to probe new device. " 860 "Unable to allocate softc\n"); 861 return(CAM_REQ_CMP_ERR); 862 } 863 864 if (cam_iosched_init(&softc->cam_iosched, periph) != 0) { 865 printf("ndaregister: Unable to probe new device. " 866 "Unable to allocate iosched memory\n"); 867 free(softc, M_DEVBUF); 868 return(CAM_REQ_CMP_ERR); 869 } 870 871 /* ident_data parsing */ 872 873 periph->softc = softc; 874 softc->quirks = NDA_Q_NONE; 875 xpt_path_inq(&cpi, periph->path); 876 TASK_INIT(&softc->sysctl_task, 0, ndasysctlinit, periph); 877 878 /* 879 * The name space ID is the lun, save it for later I/O 880 */ 881 softc->nsid = (uint32_t)xpt_path_lun_id(periph->path); 882 883 /* 884 * Register this media as a disk 885 */ 886 (void)cam_periph_hold(periph, PRIBIO); 887 cam_periph_unlock(periph); 888 snprintf(announce_buf, sizeof(announce_buf), 889 "kern.cam.nda.%d.quirks", periph->unit_number); 890 quirks = softc->quirks; 891 TUNABLE_INT_FETCH(announce_buf, &quirks); 892 softc->quirks = quirks; 893 cam_iosched_set_sort_queue(softc->cam_iosched, 0); 894 softc->disk = disk = disk_alloc(); 895 disk->d_rotation_rate = DISK_RR_NON_ROTATING; 896 disk->d_open = ndaopen; 897 disk->d_close = ndaclose; 898 disk->d_strategy = ndastrategy; 899 disk->d_ioctl = ndaioctl; 900 disk->d_getattr = ndagetattr; 901 disk->d_dump = ndadump; 902 disk->d_gone = ndadiskgonecb; 903 disk->d_name = "nda"; 904 disk->d_drv1 = periph; 905 disk->d_unit = periph->unit_number; 906 maxio = cpi.maxio; /* Honor max I/O size of SIM */ 907 if (maxio == 0) 908 maxio = DFLTPHYS; /* traditional default */ 909 else if (maxio > maxphys) 910 maxio = maxphys; /* for safety */ 911 disk->d_maxsize = maxio; 912 flbas_fmt = (nsd->flbas >> NVME_NS_DATA_FLBAS_FORMAT_SHIFT) & 913 NVME_NS_DATA_FLBAS_FORMAT_MASK; 914 lbads = (nsd->lbaf[flbas_fmt] >> NVME_NS_DATA_LBAF_LBADS_SHIFT) & 915 NVME_NS_DATA_LBAF_LBADS_MASK; 916 disk->d_sectorsize = 1 << lbads; 917 disk->d_mediasize = (off_t)(disk->d_sectorsize * nsd->nsze); 918 disk->d_delmaxsize = disk->d_mediasize; 919 disk->d_flags = DISKFLAG_DIRECT_COMPLETION; 920 if (nvme_ctrlr_has_dataset_mgmt(cd)) 921 disk->d_flags |= DISKFLAG_CANDELETE; 922 vwc_present = (cd->vwc >> NVME_CTRLR_DATA_VWC_PRESENT_SHIFT) & 923 NVME_CTRLR_DATA_VWC_PRESENT_MASK; 924 if (vwc_present) 925 disk->d_flags |= DISKFLAG_CANFLUSHCACHE; 926 if ((cpi.hba_misc & PIM_UNMAPPED) != 0) { 927 disk->d_flags |= DISKFLAG_UNMAPPED_BIO; 928 softc->unmappedio = 1; 929 } 930 /* 931 * d_ident and d_descr are both far bigger than the length of either 932 * the serial or model number strings. 933 */ 934 cam_strvis(disk->d_descr, cd->mn, 935 NVME_MODEL_NUMBER_LENGTH, sizeof(disk->d_descr)); 936 cam_strvis(disk->d_ident, cd->sn, 937 NVME_SERIAL_NUMBER_LENGTH, sizeof(disk->d_ident)); 938 disk->d_hba_vendor = cpi.hba_vendor; 939 disk->d_hba_device = cpi.hba_device; 940 disk->d_hba_subvendor = cpi.hba_subvendor; 941 disk->d_hba_subdevice = cpi.hba_subdevice; 942 snprintf(disk->d_attachment, sizeof(disk->d_attachment), 943 "%s%d", cpi.dev_name, cpi.unit_number); 944 if (((nsd->nsfeat >> NVME_NS_DATA_NSFEAT_NPVALID_SHIFT) & 945 NVME_NS_DATA_NSFEAT_NPVALID_MASK) != 0 && nsd->npwg != 0) 946 disk->d_stripesize = ((nsd->npwg + 1) * disk->d_sectorsize); 947 else 948 disk->d_stripesize = nsd->noiob * disk->d_sectorsize; 949 disk->d_stripeoffset = 0; 950 disk->d_devstat = devstat_new_entry(periph->periph_name, 951 periph->unit_number, disk->d_sectorsize, 952 DEVSTAT_ALL_SUPPORTED, 953 DEVSTAT_TYPE_DIRECT | XPORT_DEVSTAT_TYPE(cpi.transport), 954 DEVSTAT_PRIORITY_DISK); 955 /* 956 * Add alias for older nvd drives to ease transition. 957 */ 958 if (nda_nvd_compat) 959 disk_add_alias(disk, "nvd"); 960 961 /* 962 * Acquire a reference to the periph before we register with GEOM. 963 * We'll release this reference once GEOM calls us back (via 964 * ndadiskgonecb()) telling us that our provider has been freed. 965 */ 966 if (cam_periph_acquire(periph) != 0) { 967 xpt_print(periph->path, "%s: lost periph during " 968 "registration!\n", __func__); 969 cam_periph_lock(periph); 970 return (CAM_REQ_CMP_ERR); 971 } 972 disk_create(softc->disk, DISK_VERSION); 973 cam_periph_lock(periph); 974 cam_periph_unhold(periph); 975 976 snprintf(announce_buf, sizeof(announce_buf), 977 "%juMB (%ju %u byte sectors)", 978 (uintmax_t)((uintmax_t)disk->d_mediasize / (1024*1024)), 979 (uintmax_t)disk->d_mediasize / disk->d_sectorsize, 980 disk->d_sectorsize); 981 xpt_announce_periph(periph, announce_buf); 982 xpt_announce_quirks(periph, softc->quirks, NDA_Q_BIT_STRING); 983 984 /* 985 * Create our sysctl variables, now that we know 986 * we have successfully attached. 987 */ 988 if (cam_periph_acquire(periph) == 0) 989 taskqueue_enqueue(taskqueue_thread, &softc->sysctl_task); 990 991 /* 992 * Register for device going away and info about the drive 993 * changing (though with NVMe, it can't) 994 */ 995 xpt_register_async(AC_LOST_DEVICE | AC_ADVINFO_CHANGED, 996 ndaasync, periph, periph->path); 997 998 softc->state = NDA_STATE_NORMAL; 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 biofinish(bp, NULL, ENOMEM); 1084 xpt_release_ccb(start_ccb); 1085 ndaschedule(periph); 1086 return; 1087 } 1088 TAILQ_INIT(&trim->bps); 1089 bp1 = bp; 1090 ents = min(nitems(trim->dsm), nda_max_trim_entries); 1091 ents = max(ents, 1); 1092 dsm_range = trim->dsm; 1093 dsm_end = dsm_range + ents; 1094 do { 1095 TAILQ_INSERT_TAIL(&trim->bps, bp1, bio_queue); 1096 dsm_range->length = 1097 htole32(bp1->bio_bcount / softc->disk->d_sectorsize); 1098 dsm_range->starting_lba = 1099 htole64(bp1->bio_offset / softc->disk->d_sectorsize); 1100 ranges++; 1101 totalcount += dsm_range->length; 1102 dsm_range++; 1103 if (dsm_range >= dsm_end) 1104 break; 1105 bp1 = cam_iosched_next_trim(softc->cam_iosched); 1106 /* XXX -- Could collapse adjacent ranges, but we don't for now */ 1107 /* XXX -- Could limit based on total payload size */ 1108 } while (bp1 != NULL); 1109 start_ccb->ccb_trim = trim; 1110 nda_nvme_trim(softc, &start_ccb->nvmeio, trim->dsm, 1111 dsm_range - trim->dsm); 1112 start_ccb->ccb_state = NDA_CCB_TRIM; 1113 softc->trim_count++; 1114 softc->trim_ranges += ranges; 1115 softc->trim_lbas += totalcount; 1116 /* 1117 * Note: We can have multiple TRIMs in flight, so we don't call 1118 * cam_iosched_submit_trim(softc->cam_iosched); 1119 * since that forces the I/O scheduler to only schedule one at a time. 1120 * On NVMe drives, this is a performance disaster. 1121 */ 1122 goto out; 1123 } 1124 case BIO_FLUSH: 1125 nda_nvme_flush(softc, nvmeio); 1126 break; 1127 default: 1128 biofinish(bp, NULL, EOPNOTSUPP); 1129 xpt_release_ccb(start_ccb); 1130 ndaschedule(periph); 1131 return; 1132 } 1133 start_ccb->ccb_state = NDA_CCB_BUFFER_IO; 1134 start_ccb->ccb_bp = bp; 1135 out: 1136 start_ccb->ccb_h.flags |= CAM_UNLOCKED; 1137 softc->outstanding_cmds++; 1138 softc->refcount++; /* For submission only */ 1139 cam_periph_unlock(periph); 1140 xpt_action(start_ccb); 1141 cam_periph_lock(periph); 1142 softc->refcount--; /* Submission done */ 1143 1144 /* May have more work to do, so ensure we stay scheduled */ 1145 ndaschedule(periph); 1146 break; 1147 } 1148 } 1149 } 1150 1151 static void 1152 ndadone(struct cam_periph *periph, union ccb *done_ccb) 1153 { 1154 struct nda_softc *softc; 1155 struct ccb_nvmeio *nvmeio = &done_ccb->nvmeio; 1156 struct cam_path *path; 1157 int state; 1158 1159 softc = (struct nda_softc *)periph->softc; 1160 path = done_ccb->ccb_h.path; 1161 1162 CAM_DEBUG(path, CAM_DEBUG_TRACE, ("ndadone\n")); 1163 1164 state = nvmeio->ccb_state & NDA_CCB_TYPE_MASK; 1165 switch (state) { 1166 case NDA_CCB_BUFFER_IO: 1167 case NDA_CCB_TRIM: 1168 { 1169 int error; 1170 1171 cam_periph_lock(periph); 1172 if ((done_ccb->ccb_h.status & CAM_STATUS_MASK) != CAM_REQ_CMP) { 1173 error = ndaerror(done_ccb, 0, 0); 1174 if (error == ERESTART) { 1175 /* A retry was scheduled, so just return. */ 1176 cam_periph_unlock(periph); 1177 return; 1178 } 1179 if ((done_ccb->ccb_h.status & CAM_DEV_QFRZN) != 0) 1180 cam_release_devq(path, 1181 /*relsim_flags*/0, 1182 /*reduction*/0, 1183 /*timeout*/0, 1184 /*getcount_only*/0); 1185 } else { 1186 if ((done_ccb->ccb_h.status & CAM_DEV_QFRZN) != 0) 1187 panic("REQ_CMP with QFRZN"); 1188 error = 0; 1189 } 1190 if (state == NDA_CCB_BUFFER_IO) { 1191 struct bio *bp; 1192 1193 bp = (struct bio *)done_ccb->ccb_bp; 1194 bp->bio_error = error; 1195 if (error != 0) { 1196 bp->bio_resid = bp->bio_bcount; 1197 bp->bio_flags |= BIO_ERROR; 1198 } else { 1199 bp->bio_resid = 0; 1200 } 1201 softc->outstanding_cmds--; 1202 1203 /* 1204 * We need to call cam_iosched before we call biodone so that we 1205 * don't measure any activity that happens in the completion 1206 * routine, which in the case of sendfile can be quite 1207 * extensive. 1208 */ 1209 cam_iosched_bio_complete(softc->cam_iosched, bp, done_ccb); 1210 xpt_release_ccb(done_ccb); 1211 ndaschedule(periph); 1212 cam_periph_unlock(periph); 1213 biodone(bp); 1214 } else { /* state == NDA_CCB_TRIM */ 1215 struct nda_trim_request *trim; 1216 struct bio *bp1, *bp2; 1217 TAILQ_HEAD(, bio) queue; 1218 1219 trim = nvmeio->ccb_trim; 1220 TAILQ_INIT(&queue); 1221 TAILQ_CONCAT(&queue, &trim->bps, bio_queue); 1222 free(trim, M_NVMEDA); 1223 1224 /* 1225 * Since we can have multiple trims in flight, we don't 1226 * need to call this here. 1227 * cam_iosched_trim_done(softc->cam_iosched); 1228 */ 1229 /* 1230 * The the I/O scheduler that we're finishing the I/O 1231 * so we can keep book. The first one we pass in the CCB 1232 * which has the timing information. The rest we pass in NULL 1233 * so we can keep proper counts. 1234 */ 1235 bp1 = TAILQ_FIRST(&queue); 1236 cam_iosched_bio_complete(softc->cam_iosched, bp1, done_ccb); 1237 xpt_release_ccb(done_ccb); 1238 softc->outstanding_cmds--; 1239 ndaschedule(periph); 1240 cam_periph_unlock(periph); 1241 while ((bp2 = TAILQ_FIRST(&queue)) != NULL) { 1242 TAILQ_REMOVE(&queue, bp2, bio_queue); 1243 bp2->bio_error = error; 1244 if (error != 0) { 1245 bp2->bio_flags |= BIO_ERROR; 1246 bp2->bio_resid = bp1->bio_bcount; 1247 } else 1248 bp2->bio_resid = 0; 1249 if (bp1 != bp2) 1250 cam_iosched_bio_complete(softc->cam_iosched, bp2, NULL); 1251 biodone(bp2); 1252 } 1253 } 1254 return; 1255 } 1256 case NDA_CCB_DUMP: 1257 /* No-op. We're polling */ 1258 return; 1259 case NDA_CCB_PASS: 1260 /* NVME_PASSTHROUGH_CMD runs this CCB and releases it */ 1261 return; 1262 default: 1263 break; 1264 } 1265 xpt_release_ccb(done_ccb); 1266 } 1267 1268 static int 1269 ndaerror(union ccb *ccb, u_int32_t cam_flags, u_int32_t sense_flags) 1270 { 1271 struct nda_softc *softc; 1272 struct cam_periph *periph; 1273 1274 periph = xpt_path_periph(ccb->ccb_h.path); 1275 softc = (struct nda_softc *)periph->softc; 1276 1277 switch (ccb->ccb_h.status & CAM_STATUS_MASK) { 1278 case CAM_CMD_TIMEOUT: 1279 #ifdef CAM_IO_STATS 1280 softc->timeouts++; 1281 #endif 1282 break; 1283 case CAM_REQ_ABORTED: 1284 case CAM_REQ_CMP_ERR: 1285 case CAM_REQ_TERMIO: 1286 case CAM_UNREC_HBA_ERROR: 1287 case CAM_DATA_RUN_ERR: 1288 case CAM_ATA_STATUS_ERROR: 1289 #ifdef CAM_IO_STATS 1290 softc->errors++; 1291 #endif 1292 break; 1293 default: 1294 break; 1295 } 1296 1297 return(cam_periph_error(ccb, cam_flags, sense_flags)); 1298 } 1299 1300 /* 1301 * Step through all NDA peripheral drivers, and if the device is still open, 1302 * sync the disk cache to physical media. 1303 */ 1304 static void 1305 ndaflush(void) 1306 { 1307 struct cam_periph *periph; 1308 struct nda_softc *softc; 1309 union ccb *ccb; 1310 int error; 1311 1312 CAM_PERIPH_FOREACH(periph, &ndadriver) { 1313 softc = (struct nda_softc *)periph->softc; 1314 1315 if (SCHEDULER_STOPPED()) { 1316 /* 1317 * If we paniced with the lock held or the periph is not 1318 * open, do not recurse. Otherwise, call ndadump since 1319 * that avoids the sleeping cam_periph_getccb does if no 1320 * CCBs are available. 1321 */ 1322 if (!cam_periph_owned(periph) && 1323 (softc->flags & NDA_FLAG_OPEN)) { 1324 ndadump(softc->disk, NULL, 0, 0, 0); 1325 } 1326 continue; 1327 } 1328 1329 /* 1330 * We only sync the cache if the drive is still open 1331 */ 1332 cam_periph_lock(periph); 1333 if ((softc->flags & NDA_FLAG_OPEN) == 0) { 1334 cam_periph_unlock(periph); 1335 continue; 1336 } 1337 1338 ccb = cam_periph_getccb(periph, CAM_PRIORITY_NORMAL); 1339 nda_nvme_flush(softc, &ccb->nvmeio); 1340 error = cam_periph_runccb(ccb, ndaerror, /*cam_flags*/0, 1341 /*sense_flags*/ SF_NO_RECOVERY | SF_NO_RETRY, 1342 softc->disk->d_devstat); 1343 if (error != 0) 1344 xpt_print(periph->path, "Synchronize cache failed\n"); 1345 xpt_release_ccb(ccb); 1346 cam_periph_unlock(periph); 1347 } 1348 } 1349 1350 static void 1351 ndashutdown(void *arg, int howto) 1352 { 1353 1354 ndaflush(); 1355 } 1356 1357 static void 1358 ndasuspend(void *arg) 1359 { 1360 1361 ndaflush(); 1362 } 1363