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; 378 379 periph = (struct cam_periph *)dp->d_drv1; 380 381 switch (cmd) { 382 case NVME_IO_TEST: 383 case NVME_BIO_TEST: 384 /* 385 * These don't map well to the underlying CCBs, so 386 * they are usupported via CAM. 387 */ 388 return (ENOTTY); 389 case NVME_GET_NSID: 390 { 391 struct nvme_get_nsid *gnsid = (struct nvme_get_nsid *)data; 392 struct ccb_pathinq cpi; 393 394 xpt_path_inq(&cpi, periph->path); 395 strncpy(gnsid->cdev, cpi.xport_specific.nvme.dev_name, 396 sizeof(gnsid->cdev)); 397 gnsid->nsid = cpi.xport_specific.nvme.nsid; 398 return (0); 399 } 400 case NVME_PASSTHROUGH_CMD: 401 { 402 struct nvme_pt_command *pt; 403 union ccb *ccb; 404 struct cam_periph_map_info mapinfo; 405 u_int maxmap = dp->d_maxsize; 406 int error; 407 408 /* 409 * Create a NVME_IO CCB to do the passthrough command. 410 */ 411 pt = (struct nvme_pt_command *)data; 412 ccb = xpt_alloc_ccb(); 413 xpt_setup_ccb(&ccb->ccb_h, periph->path, CAM_PRIORITY_NORMAL); 414 ccb->ccb_state = NDA_CCB_PASS; 415 cam_fill_nvmeio(&ccb->nvmeio, 416 0, /* Retries */ 417 ndadone, 418 (pt->is_read ? CAM_DIR_IN : CAM_DIR_OUT) | CAM_DATA_VADDR, 419 pt->buf, 420 pt->len, 421 nda_default_timeout * 1000); 422 memcpy(&ccb->nvmeio.cmd, &pt->cmd, sizeof(pt->cmd)); 423 424 /* 425 * Wire the user memory in this request for the I/O 426 */ 427 memset(&mapinfo, 0, sizeof(mapinfo)); 428 error = cam_periph_mapmem(ccb, &mapinfo, maxmap); 429 if (error) 430 goto out; 431 432 /* 433 * Lock the periph and run the command. 434 */ 435 cam_periph_lock(periph); 436 cam_periph_runccb(ccb, NULL, CAM_RETRY_SELTO, 437 SF_RETRY_UA | SF_NO_PRINT, NULL); 438 439 /* 440 * Tear down mapping and return status. 441 */ 442 cam_periph_unlock(periph); 443 cam_periph_unmapmem(ccb, &mapinfo); 444 error = (ccb->ccb_h.status == CAM_REQ_CMP) ? 0 : EIO; 445 out: 446 cam_periph_lock(periph); 447 xpt_release_ccb(ccb); 448 cam_periph_unlock(periph); 449 return (error); 450 } 451 default: 452 break; 453 } 454 return (ENOTTY); 455 } 456 457 /* 458 * Actually translate the requested transfer into one the physical driver 459 * can understand. The transfer is described by a buf and will include 460 * only one physical transfer. 461 */ 462 static void 463 ndastrategy(struct bio *bp) 464 { 465 struct cam_periph *periph; 466 struct nda_softc *softc; 467 468 periph = (struct cam_periph *)bp->bio_disk->d_drv1; 469 softc = (struct nda_softc *)periph->softc; 470 471 cam_periph_lock(periph); 472 473 CAM_DEBUG(periph->path, CAM_DEBUG_TRACE, ("ndastrategy(%p)\n", bp)); 474 475 /* 476 * If the device has been made invalid, error out 477 */ 478 if ((periph->flags & CAM_PERIPH_INVALID) != 0) { 479 cam_periph_unlock(periph); 480 biofinish(bp, NULL, ENXIO); 481 return; 482 } 483 484 if (bp->bio_cmd == BIO_DELETE) 485 softc->deletes++; 486 487 /* 488 * Place it in the queue of disk activities for this disk 489 */ 490 cam_iosched_queue_work(softc->cam_iosched, bp); 491 492 /* 493 * Schedule ourselves for performing the work. 494 */ 495 ndaschedule(periph); 496 cam_periph_unlock(periph); 497 498 return; 499 } 500 501 static int 502 ndadump(void *arg, void *virtual, vm_offset_t physical, off_t offset, size_t length) 503 { 504 struct cam_periph *periph; 505 struct nda_softc *softc; 506 u_int secsize; 507 struct ccb_nvmeio nvmeio; 508 struct disk *dp; 509 uint64_t lba; 510 uint32_t count; 511 int error = 0; 512 513 dp = arg; 514 periph = dp->d_drv1; 515 softc = (struct nda_softc *)periph->softc; 516 secsize = softc->disk->d_sectorsize; 517 lba = offset / secsize; 518 count = length / secsize; 519 520 if ((periph->flags & CAM_PERIPH_INVALID) != 0) 521 return (ENXIO); 522 523 /* xpt_get_ccb returns a zero'd allocation for the ccb, mimic that here */ 524 memset(&nvmeio, 0, sizeof(nvmeio)); 525 if (length > 0) { 526 xpt_setup_ccb(&nvmeio.ccb_h, periph->path, CAM_PRIORITY_NORMAL); 527 nvmeio.ccb_state = NDA_CCB_DUMP; 528 nda_nvme_write(softc, &nvmeio, virtual, lba, length, count); 529 error = cam_periph_runccb((union ccb *)&nvmeio, cam_periph_error, 530 0, SF_NO_RECOVERY | SF_NO_RETRY, NULL); 531 if (error != 0) 532 printf("Aborting dump due to I/O error %d.\n", error); 533 534 return (error); 535 } 536 537 /* Flush */ 538 xpt_setup_ccb(&nvmeio.ccb_h, periph->path, CAM_PRIORITY_NORMAL); 539 540 nvmeio.ccb_state = NDA_CCB_DUMP; 541 nda_nvme_flush(softc, &nvmeio); 542 error = cam_periph_runccb((union ccb *)&nvmeio, cam_periph_error, 543 0, SF_NO_RECOVERY | SF_NO_RETRY, NULL); 544 if (error != 0) 545 xpt_print(periph->path, "flush cmd failed\n"); 546 return (error); 547 } 548 549 static void 550 ndainit(void) 551 { 552 cam_status status; 553 554 /* 555 * Install a global async callback. This callback will 556 * receive async callbacks like "new device found". 557 */ 558 status = xpt_register_async(AC_FOUND_DEVICE, ndaasync, NULL, NULL); 559 560 if (status != CAM_REQ_CMP) { 561 printf("nda: Failed to attach master async callback " 562 "due to status 0x%x!\n", status); 563 } else if (nda_send_ordered) { 564 /* Register our event handlers */ 565 if ((EVENTHANDLER_REGISTER(power_suspend, ndasuspend, 566 NULL, EVENTHANDLER_PRI_LAST)) == NULL) 567 printf("ndainit: power event registration failed!\n"); 568 if ((EVENTHANDLER_REGISTER(shutdown_post_sync, ndashutdown, 569 NULL, SHUTDOWN_PRI_DEFAULT)) == NULL) 570 printf("ndainit: shutdown event registration failed!\n"); 571 } 572 } 573 574 /* 575 * Callback from GEOM, called when it has finished cleaning up its 576 * resources. 577 */ 578 static void 579 ndadiskgonecb(struct disk *dp) 580 { 581 struct cam_periph *periph; 582 583 periph = (struct cam_periph *)dp->d_drv1; 584 585 cam_periph_release(periph); 586 } 587 588 static void 589 ndaoninvalidate(struct cam_periph *periph) 590 { 591 struct nda_softc *softc; 592 593 softc = (struct nda_softc *)periph->softc; 594 595 /* 596 * De-register any async callbacks. 597 */ 598 xpt_register_async(0, ndaasync, periph, periph->path); 599 #ifdef CAM_IO_STATS 600 softc->invalidations++; 601 #endif 602 603 /* 604 * Return all queued I/O with ENXIO. 605 * XXX Handle any transactions queued to the card 606 * with XPT_ABORT_CCB. 607 */ 608 cam_iosched_flush(softc->cam_iosched, NULL, ENXIO); 609 610 disk_gone(softc->disk); 611 } 612 613 static void 614 ndacleanup(struct cam_periph *periph) 615 { 616 struct nda_softc *softc; 617 618 softc = (struct nda_softc *)periph->softc; 619 620 cam_periph_unlock(periph); 621 622 cam_iosched_fini(softc->cam_iosched); 623 624 /* 625 * If we can't free the sysctl tree, oh well... 626 */ 627 if ((softc->flags & NDA_FLAG_SCTX_INIT) != 0) { 628 #ifdef CAM_IO_STATS 629 if (sysctl_ctx_free(&softc->sysctl_stats_ctx) != 0) 630 xpt_print(periph->path, 631 "can't remove sysctl stats context\n"); 632 #endif 633 if (sysctl_ctx_free(&softc->sysctl_ctx) != 0) 634 xpt_print(periph->path, 635 "can't remove sysctl context\n"); 636 } 637 638 disk_destroy(softc->disk); 639 free(softc, M_DEVBUF); 640 cam_periph_lock(periph); 641 } 642 643 static void 644 ndaasync(void *callback_arg, u_int32_t code, 645 struct cam_path *path, void *arg) 646 { 647 struct cam_periph *periph; 648 649 periph = (struct cam_periph *)callback_arg; 650 switch (code) { 651 case AC_FOUND_DEVICE: 652 { 653 struct ccb_getdev *cgd; 654 cam_status status; 655 656 cgd = (struct ccb_getdev *)arg; 657 if (cgd == NULL) 658 break; 659 660 if (cgd->protocol != PROTO_NVME) 661 break; 662 663 /* 664 * Allocate a peripheral instance for 665 * this device and start the probe 666 * process. 667 */ 668 status = cam_periph_alloc(ndaregister, ndaoninvalidate, 669 ndacleanup, ndastart, 670 "nda", CAM_PERIPH_BIO, 671 path, ndaasync, 672 AC_FOUND_DEVICE, cgd); 673 674 if (status != CAM_REQ_CMP 675 && status != CAM_REQ_INPROG) 676 printf("ndaasync: Unable to attach to new device " 677 "due to status 0x%x\n", status); 678 break; 679 } 680 case AC_ADVINFO_CHANGED: 681 { 682 uintptr_t buftype; 683 684 buftype = (uintptr_t)arg; 685 if (buftype == CDAI_TYPE_PHYS_PATH) { 686 struct nda_softc *softc; 687 688 softc = periph->softc; 689 disk_attr_changed(softc->disk, "GEOM::physpath", 690 M_NOWAIT); 691 } 692 break; 693 } 694 case AC_LOST_DEVICE: 695 default: 696 cam_periph_async(periph, code, path, arg); 697 break; 698 } 699 } 700 701 static void 702 ndasysctlinit(void *context, int pending) 703 { 704 struct cam_periph *periph; 705 struct nda_softc *softc; 706 char tmpstr[32], tmpstr2[16]; 707 708 periph = (struct cam_periph *)context; 709 710 /* periph was held for us when this task was enqueued */ 711 if ((periph->flags & CAM_PERIPH_INVALID) != 0) { 712 cam_periph_release(periph); 713 return; 714 } 715 716 softc = (struct nda_softc *)periph->softc; 717 snprintf(tmpstr, sizeof(tmpstr), "CAM NDA unit %d", periph->unit_number); 718 snprintf(tmpstr2, sizeof(tmpstr2), "%d", periph->unit_number); 719 720 sysctl_ctx_init(&softc->sysctl_ctx); 721 softc->flags |= NDA_FLAG_SCTX_INIT; 722 softc->sysctl_tree = SYSCTL_ADD_NODE_WITH_LABEL(&softc->sysctl_ctx, 723 SYSCTL_STATIC_CHILDREN(_kern_cam_nda), OID_AUTO, tmpstr2, 724 CTLFLAG_RD | CTLFLAG_MPSAFE, 0, tmpstr, "device_index"); 725 if (softc->sysctl_tree == NULL) { 726 printf("ndasysctlinit: unable to allocate sysctl tree\n"); 727 cam_periph_release(periph); 728 return; 729 } 730 731 SYSCTL_ADD_INT(&softc->sysctl_ctx, SYSCTL_CHILDREN(softc->sysctl_tree), 732 OID_AUTO, "unmapped_io", CTLFLAG_RD, 733 &softc->unmappedio, 0, "Unmapped I/O leaf"); 734 735 SYSCTL_ADD_QUAD(&softc->sysctl_ctx, SYSCTL_CHILDREN(softc->sysctl_tree), 736 OID_AUTO, "deletes", CTLFLAG_RD, 737 &softc->deletes, "Number of BIO_DELETE requests"); 738 739 SYSCTL_ADD_UQUAD(&softc->sysctl_ctx, 740 SYSCTL_CHILDREN(softc->sysctl_tree), OID_AUTO, 741 "trim_count", CTLFLAG_RD, &softc->trim_count, 742 "Total number of unmap/dsm commands sent"); 743 SYSCTL_ADD_UQUAD(&softc->sysctl_ctx, 744 SYSCTL_CHILDREN(softc->sysctl_tree), OID_AUTO, 745 "trim_ranges", CTLFLAG_RD, &softc->trim_ranges, 746 "Total number of ranges in unmap/dsm commands"); 747 SYSCTL_ADD_UQUAD(&softc->sysctl_ctx, 748 SYSCTL_CHILDREN(softc->sysctl_tree), OID_AUTO, 749 "trim_lbas", CTLFLAG_RD, &softc->trim_lbas, 750 "Total lbas in the unmap/dsm commands sent"); 751 752 SYSCTL_ADD_INT(&softc->sysctl_ctx, SYSCTL_CHILDREN(softc->sysctl_tree), 753 OID_AUTO, "rotating", CTLFLAG_RD, &nda_rotating_media, 1, 754 "Rotating media"); 755 756 SYSCTL_ADD_PROC(&softc->sysctl_ctx, SYSCTL_CHILDREN(softc->sysctl_tree), 757 OID_AUTO, "flags", CTLTYPE_STRING | CTLFLAG_RD | CTLFLAG_MPSAFE, 758 softc, 0, ndaflagssysctl, "A", 759 "Flags for drive"); 760 761 #ifdef CAM_IO_STATS 762 softc->sysctl_stats_tree = SYSCTL_ADD_NODE(&softc->sysctl_stats_ctx, 763 SYSCTL_CHILDREN(softc->sysctl_tree), OID_AUTO, "stats", 764 CTLFLAG_RD | CTLFLAG_MPSAFE, 0, "Statistics"); 765 if (softc->sysctl_stats_tree == NULL) { 766 printf("ndasysctlinit: unable to allocate sysctl tree for stats\n"); 767 cam_periph_release(periph); 768 return; 769 } 770 SYSCTL_ADD_INT(&softc->sysctl_stats_ctx, 771 SYSCTL_CHILDREN(softc->sysctl_stats_tree), 772 OID_AUTO, "timeouts", CTLFLAG_RD, 773 &softc->timeouts, 0, 774 "Device timeouts reported by the SIM"); 775 SYSCTL_ADD_INT(&softc->sysctl_stats_ctx, 776 SYSCTL_CHILDREN(softc->sysctl_stats_tree), 777 OID_AUTO, "errors", CTLFLAG_RD, 778 &softc->errors, 0, 779 "Transport errors reported by the SIM."); 780 SYSCTL_ADD_INT(&softc->sysctl_stats_ctx, 781 SYSCTL_CHILDREN(softc->sysctl_stats_tree), 782 OID_AUTO, "pack_invalidations", CTLFLAG_RD, 783 &softc->invalidations, 0, 784 "Device pack invalidations."); 785 #endif 786 787 #ifdef CAM_TEST_FAILURE 788 SYSCTL_ADD_PROC(&softc->sysctl_ctx, SYSCTL_CHILDREN(softc->sysctl_tree), 789 OID_AUTO, "invalidate", CTLTYPE_U64 | CTLFLAG_RW | CTLFLAG_MPSAFE, 790 periph, 0, cam_periph_invalidate_sysctl, "I", 791 "Write 1 to invalidate the drive immediately"); 792 #endif 793 794 cam_iosched_sysctl_init(softc->cam_iosched, &softc->sysctl_ctx, 795 softc->sysctl_tree); 796 797 cam_periph_release(periph); 798 } 799 800 static int 801 ndaflagssysctl(SYSCTL_HANDLER_ARGS) 802 { 803 struct sbuf sbuf; 804 struct nda_softc *softc = arg1; 805 int error; 806 807 sbuf_new_for_sysctl(&sbuf, NULL, 0, req); 808 if (softc->flags != 0) 809 sbuf_printf(&sbuf, "0x%b", (unsigned)softc->flags, NDA_FLAG_STRING); 810 else 811 sbuf_printf(&sbuf, "0"); 812 error = sbuf_finish(&sbuf); 813 sbuf_delete(&sbuf); 814 815 return (error); 816 } 817 818 static int 819 ndagetattr(struct bio *bp) 820 { 821 int ret; 822 struct cam_periph *periph; 823 824 if (g_handleattr_int(bp, "GEOM::canspeedup", nda_enable_biospeedup)) 825 return (EJUSTRETURN); 826 827 periph = (struct cam_periph *)bp->bio_disk->d_drv1; 828 cam_periph_lock(periph); 829 ret = xpt_getattr(bp->bio_data, bp->bio_length, bp->bio_attribute, 830 periph->path); 831 cam_periph_unlock(periph); 832 if (ret == 0) 833 bp->bio_completed = bp->bio_length; 834 return ret; 835 } 836 837 static cam_status 838 ndaregister(struct cam_periph *periph, void *arg) 839 { 840 struct nda_softc *softc; 841 struct disk *disk; 842 struct ccb_pathinq cpi; 843 const struct nvme_namespace_data *nsd; 844 const struct nvme_controller_data *cd; 845 char announce_buf[80]; 846 uint8_t flbas_fmt, lbads, vwc_present; 847 u_int maxio; 848 int quirks; 849 850 nsd = nvme_get_identify_ns(periph); 851 cd = nvme_get_identify_cntrl(periph); 852 853 softc = (struct nda_softc *)malloc(sizeof(*softc), M_DEVBUF, 854 M_NOWAIT | M_ZERO); 855 856 if (softc == NULL) { 857 printf("ndaregister: Unable to probe new device. " 858 "Unable to allocate softc\n"); 859 return(CAM_REQ_CMP_ERR); 860 } 861 862 if (cam_iosched_init(&softc->cam_iosched, periph) != 0) { 863 printf("ndaregister: Unable to probe new device. " 864 "Unable to allocate iosched memory\n"); 865 free(softc, M_DEVBUF); 866 return(CAM_REQ_CMP_ERR); 867 } 868 869 /* ident_data parsing */ 870 871 periph->softc = softc; 872 softc->quirks = NDA_Q_NONE; 873 xpt_path_inq(&cpi, periph->path); 874 TASK_INIT(&softc->sysctl_task, 0, ndasysctlinit, periph); 875 876 /* 877 * The name space ID is the lun, save it for later I/O 878 */ 879 softc->nsid = (uint32_t)xpt_path_lun_id(periph->path); 880 881 /* 882 * Register this media as a disk 883 */ 884 (void)cam_periph_hold(periph, PRIBIO); 885 cam_periph_unlock(periph); 886 snprintf(announce_buf, sizeof(announce_buf), 887 "kern.cam.nda.%d.quirks", periph->unit_number); 888 quirks = softc->quirks; 889 TUNABLE_INT_FETCH(announce_buf, &quirks); 890 softc->quirks = quirks; 891 cam_iosched_set_sort_queue(softc->cam_iosched, 0); 892 softc->disk = disk = disk_alloc(); 893 disk->d_rotation_rate = DISK_RR_NON_ROTATING; 894 disk->d_open = ndaopen; 895 disk->d_close = ndaclose; 896 disk->d_strategy = ndastrategy; 897 disk->d_ioctl = ndaioctl; 898 disk->d_getattr = ndagetattr; 899 if (cam_sim_pollable(periph->sim)) 900 disk->d_dump = ndadump; 901 disk->d_gone = ndadiskgonecb; 902 disk->d_name = "nda"; 903 disk->d_drv1 = periph; 904 disk->d_unit = periph->unit_number; 905 maxio = cpi.maxio; /* Honor max I/O size of SIM */ 906 if (maxio == 0) 907 maxio = DFLTPHYS; /* traditional default */ 908 else if (maxio > maxphys) 909 maxio = maxphys; /* for safety */ 910 disk->d_maxsize = maxio; 911 flbas_fmt = (nsd->flbas >> NVME_NS_DATA_FLBAS_FORMAT_SHIFT) & 912 NVME_NS_DATA_FLBAS_FORMAT_MASK; 913 lbads = (nsd->lbaf[flbas_fmt] >> NVME_NS_DATA_LBAF_LBADS_SHIFT) & 914 NVME_NS_DATA_LBAF_LBADS_MASK; 915 disk->d_sectorsize = 1 << lbads; 916 disk->d_mediasize = (off_t)(disk->d_sectorsize * nsd->nsze); 917 disk->d_delmaxsize = disk->d_mediasize; 918 disk->d_flags = DISKFLAG_DIRECT_COMPLETION; 919 if (nvme_ctrlr_has_dataset_mgmt(cd)) 920 disk->d_flags |= DISKFLAG_CANDELETE; 921 vwc_present = (cd->vwc >> NVME_CTRLR_DATA_VWC_PRESENT_SHIFT) & 922 NVME_CTRLR_DATA_VWC_PRESENT_MASK; 923 if (vwc_present) 924 disk->d_flags |= DISKFLAG_CANFLUSHCACHE; 925 if ((cpi.hba_misc & PIM_UNMAPPED) != 0) { 926 disk->d_flags |= DISKFLAG_UNMAPPED_BIO; 927 softc->unmappedio = 1; 928 } 929 /* 930 * d_ident and d_descr are both far bigger than the length of either 931 * the serial or model number strings. 932 */ 933 cam_strvis(disk->d_descr, cd->mn, 934 NVME_MODEL_NUMBER_LENGTH, sizeof(disk->d_descr)); 935 cam_strvis(disk->d_ident, cd->sn, 936 NVME_SERIAL_NUMBER_LENGTH, sizeof(disk->d_ident)); 937 disk->d_hba_vendor = cpi.hba_vendor; 938 disk->d_hba_device = cpi.hba_device; 939 disk->d_hba_subvendor = cpi.hba_subvendor; 940 disk->d_hba_subdevice = cpi.hba_subdevice; 941 snprintf(disk->d_attachment, sizeof(disk->d_attachment), 942 "%s%d", cpi.dev_name, cpi.unit_number); 943 if (((nsd->nsfeat >> NVME_NS_DATA_NSFEAT_NPVALID_SHIFT) & 944 NVME_NS_DATA_NSFEAT_NPVALID_MASK) != 0 && nsd->npwg != 0) 945 disk->d_stripesize = ((nsd->npwg + 1) * disk->d_sectorsize); 946 else 947 disk->d_stripesize = nsd->noiob * disk->d_sectorsize; 948 disk->d_stripeoffset = 0; 949 disk->d_devstat = devstat_new_entry(periph->periph_name, 950 periph->unit_number, disk->d_sectorsize, 951 DEVSTAT_ALL_SUPPORTED, 952 DEVSTAT_TYPE_DIRECT | XPORT_DEVSTAT_TYPE(cpi.transport), 953 DEVSTAT_PRIORITY_DISK); 954 /* 955 * Add alias for older nvd drives to ease transition. 956 */ 957 if (nda_nvd_compat) 958 disk_add_alias(disk, "nvd"); 959 960 /* 961 * Acquire a reference to the periph before we register with GEOM. 962 * We'll release this reference once GEOM calls us back (via 963 * ndadiskgonecb()) telling us that our provider has been freed. 964 */ 965 if (cam_periph_acquire(periph) != 0) { 966 xpt_print(periph->path, "%s: lost periph during " 967 "registration!\n", __func__); 968 cam_periph_lock(periph); 969 return (CAM_REQ_CMP_ERR); 970 } 971 disk_create(softc->disk, DISK_VERSION); 972 cam_periph_lock(periph); 973 cam_periph_unhold(periph); 974 975 snprintf(announce_buf, sizeof(announce_buf), 976 "%juMB (%ju %u byte sectors)", 977 (uintmax_t)((uintmax_t)disk->d_mediasize / (1024*1024)), 978 (uintmax_t)disk->d_mediasize / disk->d_sectorsize, 979 disk->d_sectorsize); 980 xpt_announce_periph(periph, announce_buf); 981 xpt_announce_quirks(periph, softc->quirks, NDA_Q_BIT_STRING); 982 983 /* 984 * Create our sysctl variables, now that we know 985 * we have successfully attached. 986 */ 987 if (cam_periph_acquire(periph) == 0) 988 taskqueue_enqueue(taskqueue_thread, &softc->sysctl_task); 989 990 /* 991 * Register for device going away and info about the drive 992 * changing (though with NVMe, it can't) 993 */ 994 xpt_register_async(AC_LOST_DEVICE | AC_ADVINFO_CHANGED, 995 ndaasync, periph, periph->path); 996 997 softc->state = NDA_STATE_NORMAL; 998 return(CAM_REQ_CMP); 999 } 1000 1001 static void 1002 ndastart(struct cam_periph *periph, union ccb *start_ccb) 1003 { 1004 struct nda_softc *softc = (struct nda_softc *)periph->softc; 1005 struct ccb_nvmeio *nvmeio = &start_ccb->nvmeio; 1006 1007 CAM_DEBUG(periph->path, CAM_DEBUG_TRACE, ("ndastart\n")); 1008 1009 switch (softc->state) { 1010 case NDA_STATE_NORMAL: 1011 { 1012 struct bio *bp; 1013 1014 bp = cam_iosched_next_bio(softc->cam_iosched); 1015 CAM_DEBUG(periph->path, CAM_DEBUG_TRACE, ("ndastart: bio %p\n", bp)); 1016 if (bp == NULL) { 1017 xpt_release_ccb(start_ccb); 1018 break; 1019 } 1020 1021 switch (bp->bio_cmd) { 1022 case BIO_WRITE: 1023 softc->flags |= NDA_FLAG_DIRTY; 1024 /* FALLTHROUGH */ 1025 case BIO_READ: 1026 { 1027 #ifdef CAM_TEST_FAILURE 1028 int fail = 0; 1029 1030 /* 1031 * Support the failure ioctls. If the command is a 1032 * read, and there are pending forced read errors, or 1033 * if a write and pending write errors, then fail this 1034 * operation with EIO. This is useful for testing 1035 * purposes. Also, support having every Nth read fail. 1036 * 1037 * This is a rather blunt tool. 1038 */ 1039 if (bp->bio_cmd == BIO_READ) { 1040 if (softc->force_read_error) { 1041 softc->force_read_error--; 1042 fail = 1; 1043 } 1044 if (softc->periodic_read_error > 0) { 1045 if (++softc->periodic_read_count >= 1046 softc->periodic_read_error) { 1047 softc->periodic_read_count = 0; 1048 fail = 1; 1049 } 1050 } 1051 } else { 1052 if (softc->force_write_error) { 1053 softc->force_write_error--; 1054 fail = 1; 1055 } 1056 } 1057 if (fail) { 1058 biofinish(bp, NULL, EIO); 1059 xpt_release_ccb(start_ccb); 1060 ndaschedule(periph); 1061 return; 1062 } 1063 #endif 1064 KASSERT((bp->bio_flags & BIO_UNMAPPED) == 0 || 1065 round_page(bp->bio_bcount + bp->bio_ma_offset) / 1066 PAGE_SIZE == bp->bio_ma_n, 1067 ("Short bio %p", bp)); 1068 nda_nvme_rw_bio(softc, &start_ccb->nvmeio, bp, bp->bio_cmd == BIO_READ ? 1069 NVME_OPC_READ : NVME_OPC_WRITE); 1070 break; 1071 } 1072 case BIO_DELETE: 1073 { 1074 struct nvme_dsm_range *dsm_range, *dsm_end; 1075 struct nda_trim_request *trim; 1076 struct bio *bp1; 1077 int ents; 1078 uint32_t totalcount = 0, ranges = 0; 1079 1080 trim = malloc(sizeof(*trim), M_NVMEDA, M_ZERO | M_NOWAIT); 1081 if (trim == NULL) { 1082 biofinish(bp, NULL, ENOMEM); 1083 xpt_release_ccb(start_ccb); 1084 ndaschedule(periph); 1085 return; 1086 } 1087 TAILQ_INIT(&trim->bps); 1088 bp1 = bp; 1089 ents = min(nitems(trim->dsm), nda_max_trim_entries); 1090 ents = max(ents, 1); 1091 dsm_range = trim->dsm; 1092 dsm_end = dsm_range + ents; 1093 do { 1094 TAILQ_INSERT_TAIL(&trim->bps, bp1, bio_queue); 1095 dsm_range->length = 1096 htole32(bp1->bio_bcount / softc->disk->d_sectorsize); 1097 dsm_range->starting_lba = 1098 htole64(bp1->bio_offset / softc->disk->d_sectorsize); 1099 ranges++; 1100 totalcount += dsm_range->length; 1101 dsm_range++; 1102 if (dsm_range >= dsm_end) 1103 break; 1104 bp1 = cam_iosched_next_trim(softc->cam_iosched); 1105 /* XXX -- Could collapse adjacent ranges, but we don't for now */ 1106 /* XXX -- Could limit based on total payload size */ 1107 } while (bp1 != NULL); 1108 start_ccb->ccb_trim = trim; 1109 nda_nvme_trim(softc, &start_ccb->nvmeio, trim->dsm, 1110 dsm_range - trim->dsm); 1111 start_ccb->ccb_state = NDA_CCB_TRIM; 1112 softc->trim_count++; 1113 softc->trim_ranges += ranges; 1114 softc->trim_lbas += totalcount; 1115 /* 1116 * Note: We can have multiple TRIMs in flight, so we don't call 1117 * cam_iosched_submit_trim(softc->cam_iosched); 1118 * since that forces the I/O scheduler to only schedule one at a time. 1119 * On NVMe drives, this is a performance disaster. 1120 */ 1121 goto out; 1122 } 1123 case BIO_FLUSH: 1124 nda_nvme_flush(softc, nvmeio); 1125 break; 1126 default: 1127 biofinish(bp, NULL, EOPNOTSUPP); 1128 xpt_release_ccb(start_ccb); 1129 ndaschedule(periph); 1130 return; 1131 } 1132 start_ccb->ccb_state = NDA_CCB_BUFFER_IO; 1133 start_ccb->ccb_bp = bp; 1134 out: 1135 start_ccb->ccb_h.flags |= CAM_UNLOCKED; 1136 softc->outstanding_cmds++; 1137 softc->refcount++; /* For submission only */ 1138 cam_periph_unlock(periph); 1139 xpt_action(start_ccb); 1140 cam_periph_lock(periph); 1141 softc->refcount--; /* Submission done */ 1142 1143 /* May have more work to do, so ensure we stay scheduled */ 1144 ndaschedule(periph); 1145 break; 1146 } 1147 } 1148 } 1149 1150 static void 1151 ndadone(struct cam_periph *periph, union ccb *done_ccb) 1152 { 1153 struct nda_softc *softc; 1154 struct ccb_nvmeio *nvmeio = &done_ccb->nvmeio; 1155 struct cam_path *path; 1156 int state; 1157 1158 softc = (struct nda_softc *)periph->softc; 1159 path = done_ccb->ccb_h.path; 1160 1161 CAM_DEBUG(path, CAM_DEBUG_TRACE, ("ndadone\n")); 1162 1163 state = nvmeio->ccb_state & NDA_CCB_TYPE_MASK; 1164 switch (state) { 1165 case NDA_CCB_BUFFER_IO: 1166 case NDA_CCB_TRIM: 1167 { 1168 int error; 1169 1170 cam_periph_lock(periph); 1171 if ((done_ccb->ccb_h.status & CAM_STATUS_MASK) != CAM_REQ_CMP) { 1172 error = ndaerror(done_ccb, 0, 0); 1173 if (error == ERESTART) { 1174 /* A retry was scheduled, so just return. */ 1175 cam_periph_unlock(periph); 1176 return; 1177 } 1178 if ((done_ccb->ccb_h.status & CAM_DEV_QFRZN) != 0) 1179 cam_release_devq(path, 1180 /*relsim_flags*/0, 1181 /*reduction*/0, 1182 /*timeout*/0, 1183 /*getcount_only*/0); 1184 } else { 1185 if ((done_ccb->ccb_h.status & CAM_DEV_QFRZN) != 0) 1186 panic("REQ_CMP with QFRZN"); 1187 error = 0; 1188 } 1189 if (state == NDA_CCB_BUFFER_IO) { 1190 struct bio *bp; 1191 1192 bp = (struct bio *)done_ccb->ccb_bp; 1193 bp->bio_error = error; 1194 if (error != 0) { 1195 bp->bio_resid = bp->bio_bcount; 1196 bp->bio_flags |= BIO_ERROR; 1197 } else { 1198 bp->bio_resid = 0; 1199 } 1200 softc->outstanding_cmds--; 1201 1202 /* 1203 * We need to call cam_iosched before we call biodone so that we 1204 * don't measure any activity that happens in the completion 1205 * routine, which in the case of sendfile can be quite 1206 * extensive. 1207 */ 1208 cam_iosched_bio_complete(softc->cam_iosched, bp, done_ccb); 1209 xpt_release_ccb(done_ccb); 1210 ndaschedule(periph); 1211 cam_periph_unlock(periph); 1212 biodone(bp); 1213 } else { /* state == NDA_CCB_TRIM */ 1214 struct nda_trim_request *trim; 1215 struct bio *bp1, *bp2; 1216 TAILQ_HEAD(, bio) queue; 1217 1218 trim = nvmeio->ccb_trim; 1219 TAILQ_INIT(&queue); 1220 TAILQ_CONCAT(&queue, &trim->bps, bio_queue); 1221 free(trim, M_NVMEDA); 1222 1223 /* 1224 * Since we can have multiple trims in flight, we don't 1225 * need to call this here. 1226 * cam_iosched_trim_done(softc->cam_iosched); 1227 */ 1228 /* 1229 * The the I/O scheduler that we're finishing the I/O 1230 * so we can keep book. The first one we pass in the CCB 1231 * which has the timing information. The rest we pass in NULL 1232 * so we can keep proper counts. 1233 */ 1234 bp1 = TAILQ_FIRST(&queue); 1235 cam_iosched_bio_complete(softc->cam_iosched, bp1, done_ccb); 1236 xpt_release_ccb(done_ccb); 1237 softc->outstanding_cmds--; 1238 ndaschedule(periph); 1239 cam_periph_unlock(periph); 1240 while ((bp2 = TAILQ_FIRST(&queue)) != NULL) { 1241 TAILQ_REMOVE(&queue, bp2, bio_queue); 1242 bp2->bio_error = error; 1243 if (error != 0) { 1244 bp2->bio_flags |= BIO_ERROR; 1245 bp2->bio_resid = bp1->bio_bcount; 1246 } else 1247 bp2->bio_resid = 0; 1248 if (bp1 != bp2) 1249 cam_iosched_bio_complete(softc->cam_iosched, bp2, NULL); 1250 biodone(bp2); 1251 } 1252 } 1253 return; 1254 } 1255 case NDA_CCB_DUMP: 1256 /* No-op. We're polling */ 1257 return; 1258 case NDA_CCB_PASS: 1259 /* NVME_PASSTHROUGH_CMD runs this CCB and releases it */ 1260 return; 1261 default: 1262 break; 1263 } 1264 xpt_release_ccb(done_ccb); 1265 } 1266 1267 static int 1268 ndaerror(union ccb *ccb, u_int32_t cam_flags, u_int32_t sense_flags) 1269 { 1270 #ifdef CAM_IO_STATS 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 #endif 1277 1278 switch (ccb->ccb_h.status & CAM_STATUS_MASK) { 1279 case CAM_CMD_TIMEOUT: 1280 #ifdef CAM_IO_STATS 1281 softc->timeouts++; 1282 #endif 1283 break; 1284 case CAM_REQ_ABORTED: 1285 case CAM_REQ_CMP_ERR: 1286 case CAM_REQ_TERMIO: 1287 case CAM_UNREC_HBA_ERROR: 1288 case CAM_DATA_RUN_ERR: 1289 case CAM_ATA_STATUS_ERROR: 1290 #ifdef CAM_IO_STATS 1291 softc->errors++; 1292 #endif 1293 break; 1294 default: 1295 break; 1296 } 1297 1298 return(cam_periph_error(ccb, cam_flags, sense_flags)); 1299 } 1300 1301 /* 1302 * Step through all NDA peripheral drivers, and if the device is still open, 1303 * sync the disk cache to physical media. 1304 */ 1305 static void 1306 ndaflush(void) 1307 { 1308 struct cam_periph *periph; 1309 struct nda_softc *softc; 1310 union ccb *ccb; 1311 int error; 1312 1313 CAM_PERIPH_FOREACH(periph, &ndadriver) { 1314 softc = (struct nda_softc *)periph->softc; 1315 1316 if (SCHEDULER_STOPPED()) { 1317 /* 1318 * If we paniced with the lock held or the periph is not 1319 * open, do not recurse. Otherwise, call ndadump since 1320 * that avoids the sleeping cam_periph_getccb does if no 1321 * CCBs are available. 1322 */ 1323 if (!cam_periph_owned(periph) && 1324 (softc->flags & NDA_FLAG_OPEN)) { 1325 ndadump(softc->disk, NULL, 0, 0, 0); 1326 } 1327 continue; 1328 } 1329 1330 /* 1331 * We only sync the cache if the drive is still open 1332 */ 1333 cam_periph_lock(periph); 1334 if ((softc->flags & NDA_FLAG_OPEN) == 0) { 1335 cam_periph_unlock(periph); 1336 continue; 1337 } 1338 1339 ccb = cam_periph_getccb(periph, CAM_PRIORITY_NORMAL); 1340 nda_nvme_flush(softc, &ccb->nvmeio); 1341 error = cam_periph_runccb(ccb, ndaerror, /*cam_flags*/0, 1342 /*sense_flags*/ SF_NO_RECOVERY | SF_NO_RETRY, 1343 softc->disk->d_devstat); 1344 if (error != 0) 1345 xpt_print(periph->path, "Synchronize cache failed\n"); 1346 xpt_release_ccb(ccb); 1347 cam_periph_unlock(periph); 1348 } 1349 } 1350 1351 static void 1352 ndashutdown(void *arg, int howto) 1353 { 1354 1355 ndaflush(); 1356 } 1357 1358 static void 1359 ndasuspend(void *arg) 1360 { 1361 1362 ndaflush(); 1363 } 1364