wd.c revision 1.447
1 /* $NetBSD: wd.c,v 1.447 2019/04/05 18:23:45 bouyer Exp $ */ 2 3 /* 4 * Copyright (c) 1998, 2001 Manuel Bouyer. All rights reserved. 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 ``AS IS'' AND ANY EXPRESS OR 16 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 17 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 18 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 19 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 20 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 21 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 22 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 23 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 24 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 25 */ 26 27 /*- 28 * Copyright (c) 1998, 2003, 2004 The NetBSD Foundation, Inc. 29 * All rights reserved. 30 * 31 * This code is derived from software contributed to The NetBSD Foundation 32 * by Charles M. Hannum and by Onno van der Linden. 33 * 34 * Redistribution and use in source and binary forms, with or without 35 * modification, are permitted provided that the following conditions 36 * are met: 37 * 1. Redistributions of source code must retain the above copyright 38 * notice, this list of conditions and the following disclaimer. 39 * 2. Redistributions in binary form must reproduce the above copyright 40 * notice, this list of conditions and the following disclaimer in the 41 * documentation and/or other materials provided with the distribution. 42 * 43 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 44 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 45 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 46 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 47 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 48 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 49 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 50 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 51 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 52 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 53 * POSSIBILITY OF SUCH DAMAGE. 54 */ 55 56 #include <sys/cdefs.h> 57 __KERNEL_RCSID(0, "$NetBSD: wd.c,v 1.447 2019/04/05 18:23:45 bouyer Exp $"); 58 59 #include "opt_ata.h" 60 #include "opt_wd.h" 61 62 #include <sys/param.h> 63 #include <sys/systm.h> 64 #include <sys/kernel.h> 65 #include <sys/conf.h> 66 #include <sys/file.h> 67 #include <sys/stat.h> 68 #include <sys/ioctl.h> 69 #include <sys/buf.h> 70 #include <sys/bufq.h> 71 #include <sys/uio.h> 72 #include <sys/device.h> 73 #include <sys/disklabel.h> 74 #include <sys/disk.h> 75 #include <sys/syslog.h> 76 #include <sys/proc.h> 77 #include <sys/reboot.h> 78 #include <sys/vnode.h> 79 #include <sys/rndsource.h> 80 81 #include <sys/intr.h> 82 #include <sys/bus.h> 83 84 #include <dev/ata/atareg.h> 85 #include <dev/ata/atavar.h> 86 #include <dev/ata/wdvar.h> 87 #include <dev/ic/wdcreg.h> 88 #include <sys/ataio.h> 89 #include "locators.h" 90 91 #include <prop/proplib.h> 92 93 #define WDIORETRIES_SINGLE 4 /* number of retries for single-sector */ 94 #define WDIORETRIES 5 /* number of retries before giving up */ 95 #define RECOVERYTIME hz/2 /* time to wait before retrying a cmd */ 96 97 #define WDUNIT(dev) DISKUNIT(dev) 98 #define WDPART(dev) DISKPART(dev) 99 #define WDMINOR(unit, part) DISKMINOR(unit, part) 100 #define MAKEWDDEV(maj, unit, part) MAKEDISKDEV(maj, unit, part) 101 102 #define WDLABELDEV(dev) (MAKEWDDEV(major(dev), WDUNIT(dev), RAW_PART)) 103 104 #define DEBUG_FUNCS 0x08 105 #define DEBUG_PROBE 0x10 106 #define DEBUG_DETACH 0x20 107 #define DEBUG_XFERS 0x40 108 #ifdef ATADEBUG 109 #ifndef ATADEBUG_WD_MASK 110 #define ATADEBUG_WD_MASK 0x0 111 #endif 112 int wdcdebug_wd_mask = ATADEBUG_WD_MASK; 113 #define ATADEBUG_PRINT(args, level) \ 114 if (wdcdebug_wd_mask & (level)) \ 115 printf args 116 #else 117 #define ATADEBUG_PRINT(args, level) 118 #endif 119 120 static int wdprobe(device_t, cfdata_t, void *); 121 static void wdattach(device_t, device_t, void *); 122 static int wddetach(device_t, int); 123 static void wdperror(const struct wd_softc *, struct ata_xfer *); 124 125 static void wdminphys(struct buf *); 126 127 static int wd_firstopen(device_t, dev_t, int, int); 128 static int wd_lastclose(device_t); 129 static bool wd_suspend(device_t, const pmf_qual_t *); 130 static int wd_standby(struct wd_softc *, int); 131 132 CFATTACH_DECL3_NEW(wd, sizeof(struct wd_softc), 133 wdprobe, wdattach, wddetach, NULL, NULL, NULL, DVF_DETACH_SHUTDOWN); 134 135 extern struct cfdriver wd_cd; 136 137 static dev_type_open(wdopen); 138 static dev_type_close(wdclose); 139 static dev_type_read(wdread); 140 static dev_type_write(wdwrite); 141 static dev_type_ioctl(wdioctl); 142 static dev_type_strategy(wdstrategy); 143 static dev_type_dump(wddump); 144 static dev_type_size(wdsize); 145 static dev_type_discard(wddiscard); 146 147 const struct bdevsw wd_bdevsw = { 148 .d_open = wdopen, 149 .d_close = wdclose, 150 .d_strategy = wdstrategy, 151 .d_ioctl = wdioctl, 152 .d_dump = wddump, 153 .d_psize = wdsize, 154 .d_discard = wddiscard, 155 .d_flag = D_DISK 156 }; 157 158 const struct cdevsw wd_cdevsw = { 159 .d_open = wdopen, 160 .d_close = wdclose, 161 .d_read = wdread, 162 .d_write = wdwrite, 163 .d_ioctl = wdioctl, 164 .d_stop = nostop, 165 .d_tty = notty, 166 .d_poll = nopoll, 167 .d_mmap = nommap, 168 .d_kqfilter = nokqfilter, 169 .d_discard = wddiscard, 170 .d_flag = D_DISK 171 }; 172 173 /* #define WD_DUMP_NOT_TRUSTED if you just want to watch */ 174 static int wddoingadump = 0; 175 static int wddumprecalibrated = 0; 176 177 /* 178 * Glue necessary to hook WDCIOCCOMMAND into physio 179 */ 180 181 struct wd_ioctl { 182 LIST_ENTRY(wd_ioctl) wi_list; 183 struct buf wi_bp; 184 struct uio wi_uio; 185 struct iovec wi_iov; 186 atareq_t wi_atareq; 187 struct wd_softc *wi_softc; 188 }; 189 190 static struct wd_ioctl *wi_find(struct buf *); 191 static void wi_free(struct wd_ioctl *); 192 static struct wd_ioctl *wi_get(struct wd_softc *); 193 static void wdioctlstrategy(struct buf *); 194 195 static void wdrestart(void *); 196 static void wdstart1(struct wd_softc *, struct buf *, struct ata_xfer *); 197 static int wd_diskstart(device_t, struct buf *); 198 static int wd_dumpblocks(device_t, void *, daddr_t, int); 199 static void wd_iosize(device_t, int *); 200 static int wd_discard(device_t, off_t, off_t); 201 static void wdbioretry(void *); 202 static void wdbiorequeue(void *); 203 static void wddone(device_t, struct ata_xfer *); 204 static int wd_get_params(struct wd_softc *, uint8_t, struct ataparams *); 205 static void wd_set_geometry(struct wd_softc *); 206 static int wd_flushcache(struct wd_softc *, int, bool); 207 static int wd_trim(struct wd_softc *, daddr_t, long); 208 static bool wd_shutdown(device_t, int); 209 210 static int wd_getcache(struct wd_softc *, int *); 211 static int wd_setcache(struct wd_softc *, int); 212 213 static void wd_sysctl_attach(struct wd_softc *); 214 static void wd_sysctl_detach(struct wd_softc *); 215 216 struct dkdriver wddkdriver = { 217 .d_open = wdopen, 218 .d_close = wdclose, 219 .d_strategy = wdstrategy, 220 .d_minphys = wdminphys, 221 .d_diskstart = wd_diskstart, 222 .d_dumpblocks = wd_dumpblocks, 223 .d_iosize = wd_iosize, 224 .d_firstopen = wd_firstopen, 225 .d_lastclose = wd_lastclose, 226 .d_discard = wd_discard 227 }; 228 229 #ifdef HAS_BAD144_HANDLING 230 static void bad144intern(struct wd_softc *); 231 #endif 232 233 #define WD_QUIRK_SPLIT_MOD15_WRITE 0x0001 /* must split certain writes */ 234 235 #define WD_QUIRK_FMT "\20\1SPLIT_MOD15_WRITE\2FORCE_LBA48" 236 237 /* 238 * Quirk table for IDE drives. Put more-specific matches first, since 239 * a simple globing routine is used for matching. 240 */ 241 static const struct wd_quirk { 242 const char *wdq_match; /* inquiry pattern to match */ 243 int wdq_quirks; /* drive quirks */ 244 } wd_quirk_table[] = { 245 /* 246 * Some Seagate S-ATA drives have a PHY which can get confused 247 * with the way data is packetized by some S-ATA controllers. 248 * 249 * The work-around is to split in two any write transfer whose 250 * sector count % 15 == 1 (assuming 512 byte sectors). 251 * 252 * XXX This is an incomplete list. There are at least a couple 253 * XXX more model numbers. If you have trouble with such transfers 254 * XXX (8K is the most common) on Seagate S-ATA drives, please 255 * XXX notify thorpej (at) NetBSD.org. 256 * 257 * The ST360015AS has not yet been confirmed to have this 258 * issue, however, it is the only other drive in the 259 * Seagate Barracuda Serial ATA V family. 260 * 261 */ 262 { "ST3120023AS", 263 WD_QUIRK_SPLIT_MOD15_WRITE }, 264 { "ST380023AS", 265 WD_QUIRK_SPLIT_MOD15_WRITE }, 266 { "ST360015AS", 267 WD_QUIRK_SPLIT_MOD15_WRITE }, 268 { NULL, 269 0 } 270 }; 271 272 static const struct wd_quirk * 273 wd_lookup_quirks(const char *name) 274 { 275 const struct wd_quirk *wdq; 276 const char *estr; 277 278 for (wdq = wd_quirk_table; wdq->wdq_match != NULL; wdq++) { 279 /* 280 * We only want exact matches (which include matches 281 * against globbing characters). 282 */ 283 if (pmatch(name, wdq->wdq_match, &estr) == 2) 284 return (wdq); 285 } 286 return (NULL); 287 } 288 289 static int 290 wdprobe(device_t parent, cfdata_t match, void *aux) 291 { 292 struct ata_device *adev = aux; 293 294 if (adev == NULL) 295 return 0; 296 if (adev->adev_bustype->bustype_type != SCSIPI_BUSTYPE_ATA) 297 return 0; 298 299 if (match->cf_loc[ATA_HLCF_DRIVE] != ATA_HLCF_DRIVE_DEFAULT && 300 match->cf_loc[ATA_HLCF_DRIVE] != adev->adev_drv_data->drive) 301 return 0; 302 return 1; 303 } 304 305 static void 306 wdattach(device_t parent, device_t self, void *aux) 307 { 308 struct wd_softc *wd = device_private(self); 309 struct dk_softc *dksc = &wd->sc_dksc; 310 struct ata_device *adev= aux; 311 int i, blank; 312 char tbuf[41],pbuf[9], c, *p, *q; 313 const struct wd_quirk *wdq; 314 int dtype = DKTYPE_UNKNOWN; 315 316 dksc->sc_dev = self; 317 318 ATADEBUG_PRINT(("wdattach\n"), DEBUG_FUNCS | DEBUG_PROBE); 319 mutex_init(&wd->sc_lock, MUTEX_DEFAULT, IPL_BIO); 320 #ifdef WD_SOFTBADSECT 321 SLIST_INIT(&wd->sc_bslist); 322 #endif 323 wd->atabus = adev->adev_bustype; 324 wd->inflight = 0; 325 wd->drvp = adev->adev_drv_data; 326 327 wd->drvp->drv_openings = 1; 328 wd->drvp->drv_done = wddone; 329 wd->drvp->drv_softc = dksc->sc_dev; /* done in atabusconfig_thread() 330 but too late */ 331 332 SLIST_INIT(&wd->sc_retry_list); 333 SLIST_INIT(&wd->sc_requeue_list); 334 callout_init(&wd->sc_retry_callout, 0); /* XXX MPSAFE */ 335 callout_init(&wd->sc_requeue_callout, 0); /* XXX MPSAFE */ 336 callout_init(&wd->sc_restart_diskqueue, 0); /* XXX MPSAFE */ 337 338 aprint_naive("\n"); 339 aprint_normal("\n"); 340 341 /* read our drive info */ 342 if (wd_get_params(wd, AT_WAIT, &wd->sc_params) != 0) { 343 aprint_error_dev(self, "IDENTIFY failed\n"); 344 goto out; 345 } 346 347 for (blank = 0, p = wd->sc_params.atap_model, q = tbuf, i = 0; 348 i < sizeof(wd->sc_params.atap_model); i++) { 349 c = *p++; 350 if (c == '\0') 351 break; 352 if (c != ' ') { 353 if (blank) { 354 *q++ = ' '; 355 blank = 0; 356 } 357 *q++ = c; 358 } else 359 blank = 1; 360 } 361 *q++ = '\0'; 362 363 wd->sc_typename = kmem_asprintf("%s", tbuf); 364 aprint_normal_dev(self, "<%s>\n", wd->sc_typename); 365 366 wdq = wd_lookup_quirks(tbuf); 367 if (wdq != NULL) 368 wd->sc_quirks = wdq->wdq_quirks; 369 370 if (wd->sc_quirks != 0) { 371 char sbuf[sizeof(WD_QUIRK_FMT) + 64]; 372 snprintb(sbuf, sizeof(sbuf), WD_QUIRK_FMT, wd->sc_quirks); 373 aprint_normal_dev(self, "quirks %s\n", sbuf); 374 375 if (wd->sc_quirks & WD_QUIRK_SPLIT_MOD15_WRITE) { 376 aprint_error_dev(self, "drive corrupts write transfers with certain controllers, consider replacing\n"); 377 } 378 } 379 380 if ((wd->sc_params.atap_multi & 0xff) > 1) { 381 wd->drvp->multi = wd->sc_params.atap_multi & 0xff; 382 } else { 383 wd->drvp->multi = 1; 384 } 385 386 aprint_verbose_dev(self, "drive supports %d-sector PIO transfers,", 387 wd->drvp->multi); 388 389 /* 48-bit LBA addressing */ 390 if ((wd->sc_params.atap_cmd2_en & ATA_CMD2_LBA48) != 0) 391 wd->sc_flags |= WDF_LBA48; 392 393 /* Prior to ATA-4, LBA was optional. */ 394 if ((wd->sc_params.atap_capabilities1 & WDC_CAP_LBA) != 0) 395 wd->sc_flags |= WDF_LBA; 396 #if 0 397 /* ATA-4 requires LBA. */ 398 if (wd->sc_params.atap_ataversion != 0xffff && 399 wd->sc_params.atap_ataversion >= WDC_VER_ATA4) 400 wd->sc_flags |= WDF_LBA; 401 #endif 402 403 if ((wd->sc_flags & WDF_LBA48) != 0) { 404 aprint_verbose(" LBA48 addressing\n"); 405 wd->sc_capacity = 406 ((uint64_t) wd->sc_params.atap_max_lba[3] << 48) | 407 ((uint64_t) wd->sc_params.atap_max_lba[2] << 32) | 408 ((uint64_t) wd->sc_params.atap_max_lba[1] << 16) | 409 ((uint64_t) wd->sc_params.atap_max_lba[0] << 0); 410 wd->sc_capacity28 = 411 (wd->sc_params.atap_capacity[1] << 16) | 412 wd->sc_params.atap_capacity[0]; 413 } else if ((wd->sc_flags & WDF_LBA) != 0) { 414 aprint_verbose(" LBA addressing\n"); 415 wd->sc_capacity28 = wd->sc_capacity = 416 (wd->sc_params.atap_capacity[1] << 16) | 417 wd->sc_params.atap_capacity[0]; 418 } else { 419 aprint_verbose(" chs addressing\n"); 420 wd->sc_capacity28 = wd->sc_capacity = 421 wd->sc_params.atap_cylinders * 422 wd->sc_params.atap_heads * 423 wd->sc_params.atap_sectors; 424 } 425 if ((wd->sc_params.atap_secsz & ATA_SECSZ_VALID_MASK) == ATA_SECSZ_VALID 426 && ((wd->sc_params.atap_secsz & ATA_SECSZ_LLS) != 0)) { 427 wd->sc_blksize = 2ULL * 428 ((uint32_t)((wd->sc_params.atap_lls_secsz[1] << 16) | 429 wd->sc_params.atap_lls_secsz[0])); 430 } else { 431 wd->sc_blksize = 512; 432 } 433 wd->sc_capacity512 = (wd->sc_capacity * wd->sc_blksize) / DEV_BSIZE; 434 format_bytes(pbuf, sizeof(pbuf), wd->sc_capacity * wd->sc_blksize); 435 aprint_normal_dev(self, "%s, %d cyl, %d head, %d sec, " 436 "%d bytes/sect x %llu sectors\n", 437 pbuf, 438 (wd->sc_flags & WDF_LBA) ? (int)(wd->sc_capacity / 439 (wd->sc_params.atap_heads * wd->sc_params.atap_sectors)) : 440 wd->sc_params.atap_cylinders, 441 wd->sc_params.atap_heads, wd->sc_params.atap_sectors, 442 wd->sc_blksize, (unsigned long long)wd->sc_capacity); 443 444 ATADEBUG_PRINT(("%s: atap_dmatiming_mimi=%d, atap_dmatiming_recom=%d\n", 445 device_xname(self), wd->sc_params.atap_dmatiming_mimi, 446 wd->sc_params.atap_dmatiming_recom), DEBUG_PROBE); 447 448 if (wd->sc_blksize <= 0 || !powerof2(wd->sc_blksize) || 449 wd->sc_blksize < DEV_BSIZE || wd->sc_blksize > MAXPHYS) { 450 aprint_normal_dev(self, "WARNING: block size %u " 451 "might not actually work\n", wd->sc_blksize); 452 } 453 454 if (strcmp(wd->sc_params.atap_model, "ST506") == 0) 455 dtype = DKTYPE_ST506; 456 else 457 dtype = DKTYPE_ESDI; 458 459 out: 460 /* 461 * Initialize and attach the disk structure. 462 */ 463 dk_init(dksc, self, dtype); 464 disk_init(&dksc->sc_dkdev, dksc->sc_xname, &wddkdriver); 465 466 /* Attach dk and disk subsystems */ 467 dk_attach(dksc); 468 disk_attach(&dksc->sc_dkdev); 469 wd_set_geometry(wd); 470 471 bufq_alloc(&dksc->sc_bufq, BUFQ_DISK_DEFAULT_STRAT, BUFQ_SORT_RAWBLOCK); 472 473 /* reference to label structure, used by ata code */ 474 wd->drvp->lp = dksc->sc_dkdev.dk_label; 475 476 /* Discover wedges on this disk. */ 477 dkwedge_discover(&dksc->sc_dkdev); 478 479 if (!pmf_device_register1(self, wd_suspend, NULL, wd_shutdown)) 480 aprint_error_dev(self, "couldn't establish power handler\n"); 481 482 wd_sysctl_attach(wd); 483 } 484 485 static bool 486 wd_suspend(device_t dv, const pmf_qual_t *qual) 487 { 488 struct wd_softc *sc = device_private(dv); 489 490 /* the adapter needs to be enabled */ 491 if (sc->atabus->ata_addref(sc->drvp)) 492 return true; /* no need to complain */ 493 494 wd_flushcache(sc, AT_WAIT, false); 495 wd_standby(sc, AT_WAIT); 496 497 sc->atabus->ata_delref(sc->drvp); 498 return true; 499 } 500 501 static int 502 wddetach(device_t self, int flags) 503 { 504 struct wd_softc *wd = device_private(self); 505 struct dk_softc *dksc = &wd->sc_dksc; 506 int bmaj, cmaj, i, mn, rc; 507 508 if ((rc = disk_begindetach(&dksc->sc_dkdev, wd_lastclose, self, flags)) != 0) 509 return rc; 510 511 /* locate the major number */ 512 bmaj = bdevsw_lookup_major(&wd_bdevsw); 513 cmaj = cdevsw_lookup_major(&wd_cdevsw); 514 515 /* Nuke the vnodes for any open instances. */ 516 for (i = 0; i < MAXPARTITIONS; i++) { 517 mn = WDMINOR(device_unit(self), i); 518 vdevgone(bmaj, mn, mn, VBLK); 519 vdevgone(cmaj, mn, mn, VCHR); 520 } 521 522 dk_drain(dksc); 523 524 /* Kill off any pending commands. */ 525 mutex_enter(&wd->sc_lock); 526 wd->atabus->ata_killpending(wd->drvp); 527 528 callout_halt(&wd->sc_retry_callout, &wd->sc_lock); 529 callout_destroy(&wd->sc_retry_callout); 530 callout_halt(&wd->sc_requeue_callout, &wd->sc_lock); 531 callout_destroy(&wd->sc_requeue_callout); 532 callout_halt(&wd->sc_restart_diskqueue, &wd->sc_lock); 533 callout_destroy(&wd->sc_restart_diskqueue); 534 535 mutex_exit(&wd->sc_lock); 536 537 bufq_free(dksc->sc_bufq); 538 539 /* Delete all of our wedges. */ 540 dkwedge_delall(&dksc->sc_dkdev); 541 542 if (flags & DETACH_POWEROFF) 543 wd_standby(wd, AT_POLL); 544 545 /* Detach from the disk list. */ 546 disk_detach(&dksc->sc_dkdev); 547 disk_destroy(&dksc->sc_dkdev); 548 549 dk_detach(dksc); 550 551 #ifdef WD_SOFTBADSECT 552 /* Clean out the bad sector list */ 553 while (!SLIST_EMPTY(&wd->sc_bslist)) { 554 struct disk_badsectors *dbs = SLIST_FIRST(&wd->sc_bslist); 555 SLIST_REMOVE_HEAD(&wd->sc_bslist, dbs_next); 556 kmem_free(dbs, sizeof(*dbs)); 557 } 558 wd->sc_bscount = 0; 559 #endif 560 if (wd->sc_typename != NULL) { 561 kmem_free(wd->sc_typename, strlen(wd->sc_typename) + 1); 562 wd->sc_typename = NULL; 563 } 564 565 pmf_device_deregister(self); 566 567 wd_sysctl_detach(wd); 568 569 mutex_destroy(&wd->sc_lock); 570 571 wd->drvp->drive_type = ATA_DRIVET_NONE; /* no drive any more here */ 572 wd->drvp->drive_flags = 0; 573 574 return (0); 575 } 576 577 /* 578 * Read/write routine for a buffer. Validates the arguments and schedules the 579 * transfer. Does not wait for the transfer to complete. 580 */ 581 static void 582 wdstrategy(struct buf *bp) 583 { 584 struct wd_softc *wd = 585 device_lookup_private(&wd_cd, WDUNIT(bp->b_dev)); 586 struct dk_softc *dksc = &wd->sc_dksc; 587 588 ATADEBUG_PRINT(("wdstrategy (%s)\n", dksc->sc_xname), 589 DEBUG_XFERS); 590 591 /* If device invalidated (e.g. media change, door open, 592 * device detachment), then error. 593 */ 594 if ((wd->sc_flags & WDF_LOADED) == 0 || 595 !device_is_enabled(dksc->sc_dev)) 596 goto err; 597 598 #ifdef WD_SOFTBADSECT 599 /* 600 * If the transfer about to be attempted contains only a block that 601 * is known to be bad then return an error for the transfer without 602 * even attempting to start a transfer up under the premis that we 603 * will just end up doing more retries for a transfer that will end 604 * up failing again. 605 */ 606 if (__predict_false(!SLIST_EMPTY(&wd->sc_bslist))) { 607 struct disklabel *lp = dksc->sc_dkdev.dk_label; 608 struct disk_badsectors *dbs; 609 daddr_t blkno, maxblk; 610 611 /* convert the block number to absolute */ 612 if (lp->d_secsize >= DEV_BSIZE) 613 blkno = bp->b_blkno / (lp->d_secsize / DEV_BSIZE); 614 else 615 blkno = bp->b_blkno * (DEV_BSIZE / lp->d_secsize); 616 if (WDPART(bp->b_dev) != RAW_PART) 617 blkno += lp->d_partitions[WDPART(bp->b_dev)].p_offset; 618 maxblk = blkno + (bp->b_bcount / wd->sc_blksize) - 1; 619 620 mutex_enter(&wd->sc_lock); 621 SLIST_FOREACH(dbs, &wd->sc_bslist, dbs_next) 622 if ((dbs->dbs_min <= bp->b_rawblkno && 623 bp->b_rawblkno <= dbs->dbs_max) || 624 (dbs->dbs_min <= maxblk && maxblk <= dbs->dbs_max)){ 625 mutex_exit(&wd->sc_lock); 626 goto err; 627 } 628 mutex_exit(&wd->sc_lock); 629 } 630 #endif 631 632 dk_strategy(dksc, bp); 633 return; 634 635 err: 636 bp->b_error = EIO; 637 bp->b_resid = bp->b_bcount; 638 biodone(bp); 639 } 640 641 static void 642 wdstart1(struct wd_softc *wd, struct buf *bp, struct ata_xfer *xfer) 643 { 644 struct dk_softc *dksc = &wd->sc_dksc; 645 646 KASSERT(bp == xfer->c_bio.bp || xfer->c_bio.bp == NULL); 647 KASSERT((xfer->c_flags & (C_WAITACT|C_FREE)) == 0); 648 649 /* Reset state, so that retries don't use stale info */ 650 if (__predict_false(xfer->c_retries > 0)) { 651 xfer->c_flags = 0; 652 memset(&xfer->c_bio, 0, sizeof(xfer->c_bio)); 653 } 654 655 xfer->c_bio.blkno = bp->b_rawblkno; 656 xfer->c_bio.bcount = bp->b_bcount; 657 xfer->c_bio.databuf = bp->b_data; 658 xfer->c_bio.blkdone = 0; 659 xfer->c_bio.bp = bp; 660 661 #ifdef WD_CHAOS_MONKEY 662 /* 663 * Override blkno to be over device capacity to trigger error, 664 * but only if it's read, to avoid trashing disk contents should 665 * the command be clipped, or otherwise misinterpreted, by the 666 * driver or controller. 667 */ 668 if (BUF_ISREAD(bp) && xfer->c_retries == 0 && wd->drv_chaos_freq > 0 && 669 (++wd->drv_chaos_cnt % wd->drv_chaos_freq) == 0) { 670 device_printf(dksc->sc_dev, "%s: chaos xfer %"PRIxPTR"\n", 671 __func__, (intptr_t)xfer & PAGE_MASK); 672 xfer->c_bio.blkno = 7777777 + wd->sc_capacity; 673 xfer->c_flags |= C_CHAOS; 674 } 675 #endif 676 677 /* 678 * If we're retrying, retry in single-sector mode. This will give us 679 * the sector number of the problem, and will eventually allow the 680 * transfer to succeed. If FUA is requested, we can't actually 681 * do this, as ATA_SINGLE is usually executed as PIO transfer by drivers 682 * which support it, and that isn't compatible with NCQ/FUA. 683 */ 684 if (xfer->c_retries >= WDIORETRIES_SINGLE && 685 (bp->b_flags & B_MEDIA_FUA) == 0) 686 xfer->c_bio.flags = ATA_SINGLE; 687 else 688 xfer->c_bio.flags = 0; 689 690 /* 691 * request LBA48 transfers when supported by the controller 692 * and needed by transfer offset or size. 693 */ 694 if (wd->sc_flags & WDF_LBA48 && 695 (((xfer->c_bio.blkno + 696 xfer->c_bio.bcount / dksc->sc_dkdev.dk_geom.dg_secsize) > 697 wd->sc_capacity28) || 698 ((xfer->c_bio.bcount / dksc->sc_dkdev.dk_geom.dg_secsize) > 128))) 699 xfer->c_bio.flags |= ATA_LBA48; 700 701 /* 702 * If NCQ was negotiated, always use it for the first several attempts. 703 * Since device cancels all outstanding requests on error, downgrade 704 * to non-NCQ on retry, so that the retried transfer would not cause 705 * cascade failure for the other transfers if it fails again. 706 * If FUA was requested, we can't downgrade, as that would violate 707 * the semantics - FUA would not be honored. In that case, continue 708 * retrying with NCQ. 709 */ 710 if (WD_USE_NCQ(wd) && (xfer->c_retries < WDIORETRIES_SINGLE || 711 (bp->b_flags & B_MEDIA_FUA) != 0)) { 712 xfer->c_bio.flags |= ATA_LBA48; 713 xfer->c_flags |= C_NCQ; 714 715 if (WD_USE_NCQ_PRIO(wd) && 716 BIO_GETPRIO(bp) == BPRIO_TIMECRITICAL) 717 xfer->c_bio.flags |= ATA_PRIO_HIGH; 718 } 719 720 if (wd->sc_flags & WDF_LBA) 721 xfer->c_bio.flags |= ATA_LBA; 722 if (bp->b_flags & B_READ) 723 xfer->c_bio.flags |= ATA_READ; 724 if (bp->b_flags & B_MEDIA_FUA) { 725 /* If not using NCQ, the command WRITE DMA FUA EXT is LBA48 */ 726 KASSERT((wd->sc_flags & WDF_LBA48) != 0); 727 if ((xfer->c_flags & C_NCQ) == 0) 728 xfer->c_bio.flags |= ATA_LBA48; 729 730 xfer->c_bio.flags |= ATA_FUA; 731 } 732 733 wd->inflight++; 734 switch (wd->atabus->ata_bio(wd->drvp, xfer)) { 735 case ATACMD_TRY_AGAIN: 736 panic("wdstart1: try again"); 737 break; 738 case ATACMD_QUEUED: 739 case ATACMD_COMPLETE: 740 break; 741 default: 742 panic("wdstart1: bad return code from ata_bio()"); 743 } 744 } 745 746 static int 747 wd_diskstart(device_t dev, struct buf *bp) 748 { 749 struct wd_softc *wd = device_private(dev); 750 #ifdef ATADEBUG 751 struct dk_softc *dksc = &wd->sc_dksc; 752 #endif 753 struct ata_xfer *xfer; 754 struct ata_channel *chp; 755 unsigned openings; 756 757 mutex_enter(&wd->sc_lock); 758 759 chp = wd->drvp->chnl_softc; 760 761 ata_channel_lock(chp); 762 openings = ata_queue_openings(chp); 763 ata_channel_unlock(chp); 764 765 openings = uimin(openings, wd->drvp->drv_openings); 766 767 if (wd->inflight >= openings) { 768 mutex_exit(&wd->sc_lock); 769 return EAGAIN; 770 } 771 772 xfer = ata_get_xfer(chp, false); 773 if (xfer == NULL) { 774 ATADEBUG_PRINT(("wd_diskstart %s no xfer\n", 775 dksc->sc_xname), DEBUG_XFERS); 776 777 /* 778 * No available memory, retry later. This happens very rarely 779 * and only under memory pressure, so wait relatively long 780 * before retry. 781 */ 782 if (!callout_pending(&wd->sc_restart_diskqueue)) { 783 callout_reset(&wd->sc_restart_diskqueue, hz / 2, 784 wdrestart, dev); 785 } 786 787 mutex_exit(&wd->sc_lock); 788 return EAGAIN; 789 } 790 791 wdstart1(wd, bp, xfer); 792 793 mutex_exit(&wd->sc_lock); 794 795 return 0; 796 } 797 798 /* 799 * Queue a drive for I/O. 800 */ 801 static void 802 wdrestart(void *x) 803 { 804 device_t self = x; 805 struct wd_softc *wd = device_private(self); 806 struct dk_softc *dksc = &wd->sc_dksc; 807 808 ATADEBUG_PRINT(("wdstart %s\n", dksc->sc_xname), 809 DEBUG_XFERS); 810 811 if (!device_is_active(dksc->sc_dev)) 812 return; 813 814 dk_start(dksc, NULL); 815 } 816 817 static void 818 wddone(device_t self, struct ata_xfer *xfer) 819 { 820 struct wd_softc *wd = device_private(self); 821 struct dk_softc *dksc = &wd->sc_dksc; 822 const char *errmsg; 823 int do_perror = 0; 824 struct buf *bp; 825 826 ATADEBUG_PRINT(("wddone %s\n", dksc->sc_xname), 827 DEBUG_XFERS); 828 829 if (__predict_false(wddoingadump)) { 830 /* just drop it to the floor */ 831 ata_free_xfer(wd->drvp->chnl_softc, xfer); 832 return; 833 } 834 835 bp = xfer->c_bio.bp; 836 KASSERT(bp != NULL); 837 838 bp->b_resid = xfer->c_bio.bcount; 839 switch (xfer->c_bio.error) { 840 case ERR_DMA: 841 errmsg = "DMA error"; 842 goto retry; 843 case ERR_DF: 844 errmsg = "device fault"; 845 goto retry; 846 case TIMEOUT: 847 errmsg = "device timeout"; 848 goto retry; 849 case REQUEUE: 850 errmsg = "requeue"; 851 goto retry2; 852 case ERR_RESET: 853 errmsg = "channel reset"; 854 goto retry2; 855 case ERROR: 856 /* Don't care about media change bits */ 857 if (xfer->c_bio.r_error != 0 && 858 (xfer->c_bio.r_error & ~(WDCE_MC | WDCE_MCR)) == 0) 859 goto noerror; 860 errmsg = "error"; 861 do_perror = 1; 862 retry: /* Just reset and retry. Can we do more ? */ 863 if ((xfer->c_flags & C_RECOVERED) == 0) { 864 int wflags = (xfer->c_flags & C_POLL) ? AT_POLL : 0; 865 ata_channel_lock(wd->drvp->chnl_softc); 866 ata_thread_run(wd->drvp->chnl_softc, wflags, 867 ATACH_TH_DRIVE_RESET, wd->drvp->drive); 868 ata_channel_unlock(wd->drvp->chnl_softc); 869 } 870 retry2: 871 mutex_enter(&wd->sc_lock); 872 873 diskerr(bp, "wd", errmsg, LOG_PRINTF, 874 xfer->c_bio.blkdone, dksc->sc_dkdev.dk_label); 875 if (xfer->c_retries < WDIORETRIES) 876 printf(", xfer %"PRIxPTR", retry %d", 877 (intptr_t)xfer & PAGE_MASK, 878 xfer->c_retries); 879 printf("\n"); 880 if (do_perror) 881 wdperror(wd, xfer); 882 883 if (xfer->c_retries < WDIORETRIES) { 884 xfer->c_retries++; 885 886 /* Rerun ASAP if just requeued */ 887 if (xfer->c_bio.error == REQUEUE) { 888 SLIST_INSERT_HEAD(&wd->sc_requeue_list, xfer, 889 c_retrychain); 890 callout_reset(&wd->sc_requeue_callout, 891 1, wdbiorequeue, wd); 892 } else { 893 SLIST_INSERT_HEAD(&wd->sc_retry_list, xfer, 894 c_retrychain); 895 callout_reset(&wd->sc_retry_callout, 896 RECOVERYTIME, wdbioretry, wd); 897 } 898 899 mutex_exit(&wd->sc_lock); 900 return; 901 } 902 903 mutex_exit(&wd->sc_lock); 904 905 #ifdef WD_SOFTBADSECT 906 /* 907 * Not all errors indicate a failed block but those that do, 908 * put the block on the bad-block list for the device. Only 909 * do this for reads because the drive should do it for writes, 910 * itself, according to Manuel. 911 */ 912 if ((bp->b_flags & B_READ) && 913 ((wd->drvp->ata_vers >= 4 && xfer->c_bio.r_error & 64) || 914 (wd->drvp->ata_vers < 4 && xfer->c_bio.r_error & 192))) { 915 struct disk_badsectors *dbs; 916 917 dbs = kmem_zalloc(sizeof *dbs, KM_NOSLEEP); 918 if (dbs == NULL) { 919 aprint_error_dev(dksc->sc_dev, 920 "failed to add bad block to list\n"); 921 goto out; 922 } 923 924 dbs->dbs_min = bp->b_rawblkno; 925 dbs->dbs_max = dbs->dbs_min + 926 (bp->b_bcount /wd->sc_blksize) - 1; 927 microtime(&dbs->dbs_failedat); 928 929 mutex_enter(&wd->sc_lock); 930 SLIST_INSERT_HEAD(&wd->sc_bslist, dbs, dbs_next); 931 wd->sc_bscount++; 932 mutex_exit(&wd->sc_lock); 933 } 934 out: 935 #endif 936 bp->b_error = EIO; 937 break; 938 case NOERROR: 939 #ifdef WD_CHAOS_MONKEY 940 /* 941 * For example Parallels AHCI emulation doesn't actually 942 * return error for the invalid I/O, so just re-run 943 * the request and do not panic. 944 */ 945 if (__predict_false(xfer->c_flags & C_CHAOS)) { 946 xfer->c_bio.error = REQUEUE; 947 errmsg = "chaos noerror"; 948 goto retry2; 949 } 950 #endif 951 952 noerror: if ((xfer->c_bio.flags & ATA_CORR) || xfer->c_retries > 0) 953 device_printf(dksc->sc_dev, 954 "soft error (corrected) xfer %"PRIxPTR"\n", 955 (intptr_t)xfer & PAGE_MASK); 956 break; 957 case ERR_NODEV: 958 bp->b_error = EIO; 959 break; 960 } 961 if (__predict_false(bp->b_error != 0) && bp->b_resid == 0) { 962 /* 963 * the disk or controller sometimes report a complete 964 * xfer, when there has been an error. This is wrong, 965 * assume nothing got transfered in this case 966 */ 967 bp->b_resid = bp->b_bcount; 968 } 969 970 ata_free_xfer(wd->drvp->chnl_softc, xfer); 971 972 wd->inflight--; 973 dk_done(dksc, bp); 974 dk_start(dksc, NULL); 975 } 976 977 static void 978 wdbioretry(void *v) 979 { 980 struct wd_softc *wd = v; 981 struct ata_xfer *xfer; 982 983 ATADEBUG_PRINT(("%s %s\n", __func__, wd->sc_dksc.sc_xname), 984 DEBUG_XFERS); 985 986 mutex_enter(&wd->sc_lock); 987 while ((xfer = SLIST_FIRST(&wd->sc_retry_list))) { 988 SLIST_REMOVE_HEAD(&wd->sc_retry_list, c_retrychain); 989 wdstart1(wd, xfer->c_bio.bp, xfer); 990 } 991 mutex_exit(&wd->sc_lock); 992 } 993 994 static void 995 wdbiorequeue(void *v) 996 { 997 struct wd_softc *wd = v; 998 struct ata_xfer *xfer; 999 1000 ATADEBUG_PRINT(("%s %s\n", __func__, wd->sc_dksc.sc_xname), 1001 DEBUG_XFERS); 1002 1003 mutex_enter(&wd->sc_lock); 1004 while ((xfer = SLIST_FIRST(&wd->sc_requeue_list))) { 1005 SLIST_REMOVE_HEAD(&wd->sc_requeue_list, c_retrychain); 1006 wdstart1(wd, xfer->c_bio.bp, xfer); 1007 } 1008 mutex_exit(&wd->sc_lock); 1009 } 1010 1011 static void 1012 wdminphys(struct buf *bp) 1013 { 1014 const struct wd_softc * const wd = 1015 device_lookup_private(&wd_cd, WDUNIT(bp->b_dev)); 1016 int maxsectors; 1017 1018 /* 1019 * The limit is actually 65536 for LBA48 and 256 for non-LBA48, 1020 * but that requires to set the count for the ATA command 1021 * to 0, which is somewhat error prone, so better stay safe. 1022 */ 1023 if (wd->sc_flags & WDF_LBA48) 1024 maxsectors = 65535; 1025 else 1026 maxsectors = 128; 1027 1028 if (bp->b_bcount > (wd->sc_blksize * maxsectors)) 1029 bp->b_bcount = (wd->sc_blksize * maxsectors); 1030 1031 minphys(bp); 1032 } 1033 1034 static void 1035 wd_iosize(device_t dev, int *count) 1036 { 1037 struct buf B; 1038 int bmaj; 1039 1040 bmaj = bdevsw_lookup_major(&wd_bdevsw); 1041 B.b_dev = MAKEWDDEV(bmaj,device_unit(dev),RAW_PART); 1042 B.b_bcount = *count; 1043 1044 wdminphys(&B); 1045 1046 *count = B.b_bcount; 1047 } 1048 1049 static int 1050 wdread(dev_t dev, struct uio *uio, int flags) 1051 { 1052 1053 ATADEBUG_PRINT(("wdread\n"), DEBUG_XFERS); 1054 return (physio(wdstrategy, NULL, dev, B_READ, wdminphys, uio)); 1055 } 1056 1057 static int 1058 wdwrite(dev_t dev, struct uio *uio, int flags) 1059 { 1060 1061 ATADEBUG_PRINT(("wdwrite\n"), DEBUG_XFERS); 1062 return (physio(wdstrategy, NULL, dev, B_WRITE, wdminphys, uio)); 1063 } 1064 1065 static int 1066 wdopen(dev_t dev, int flag, int fmt, struct lwp *l) 1067 { 1068 struct wd_softc *wd; 1069 struct dk_softc *dksc; 1070 int unit, part, error; 1071 1072 ATADEBUG_PRINT(("wdopen\n"), DEBUG_FUNCS); 1073 unit = WDUNIT(dev); 1074 wd = device_lookup_private(&wd_cd, unit); 1075 if (wd == NULL) 1076 return (ENXIO); 1077 dksc = &wd->sc_dksc; 1078 1079 if (! device_is_active(dksc->sc_dev)) 1080 return (ENODEV); 1081 1082 part = WDPART(dev); 1083 1084 if (wd->sc_capacity == 0) 1085 return (ENODEV); 1086 1087 /* 1088 * If any partition is open, but the disk has been invalidated, 1089 * disallow further opens. 1090 */ 1091 if ((wd->sc_flags & (WDF_OPEN | WDF_LOADED)) == WDF_OPEN) { 1092 if (part != RAW_PART || fmt != S_IFCHR) 1093 return EIO; 1094 } 1095 1096 error = dk_open(dksc, dev, flag, fmt, l); 1097 1098 return error; 1099 } 1100 1101 /* 1102 * Serialized by caller 1103 */ 1104 static int 1105 wd_firstopen(device_t self, dev_t dev, int flag, int fmt) 1106 { 1107 struct wd_softc *wd = device_private(self); 1108 struct dk_softc *dksc = &wd->sc_dksc; 1109 int error; 1110 1111 error = wd->atabus->ata_addref(wd->drvp); 1112 if (error) 1113 return error; 1114 1115 if ((wd->sc_flags & WDF_LOADED) == 0) { 1116 int param_error; 1117 1118 /* Load the physical device parameters. */ 1119 param_error = wd_get_params(wd, AT_WAIT, &wd->sc_params); 1120 if (param_error != 0) { 1121 aprint_error_dev(dksc->sc_dev, "IDENTIFY failed\n"); 1122 error = EIO; 1123 goto bad; 1124 } 1125 wd_set_geometry(wd); 1126 wd->sc_flags |= WDF_LOADED; 1127 } 1128 1129 wd->sc_flags |= WDF_OPEN; 1130 return 0; 1131 1132 bad: 1133 wd->atabus->ata_delref(wd->drvp); 1134 return error; 1135 } 1136 1137 /* 1138 * Caller must hold wd->sc_dk.dk_openlock. 1139 */ 1140 static int 1141 wd_lastclose(device_t self) 1142 { 1143 struct wd_softc *wd = device_private(self); 1144 1145 KASSERTMSG(bufq_peek(wd->sc_dksc.sc_bufq) == NULL, "bufq not empty"); 1146 1147 wd_flushcache(wd, AT_WAIT, false); 1148 1149 wd->atabus->ata_delref(wd->drvp); 1150 wd->sc_flags &= ~WDF_OPEN; 1151 1152 return 0; 1153 } 1154 1155 static int 1156 wdclose(dev_t dev, int flag, int fmt, struct lwp *l) 1157 { 1158 struct wd_softc *wd; 1159 struct dk_softc *dksc; 1160 int unit; 1161 1162 unit = WDUNIT(dev); 1163 wd = device_lookup_private(&wd_cd, unit); 1164 dksc = &wd->sc_dksc; 1165 1166 return dk_close(dksc, dev, flag, fmt, l); 1167 } 1168 1169 void 1170 wdperror(const struct wd_softc *wd, struct ata_xfer *xfer) 1171 { 1172 static const char *const errstr0_3[] = {"address mark not found", 1173 "track 0 not found", "aborted command", "media change requested", 1174 "id not found", "media changed", "uncorrectable data error", 1175 "bad block detected"}; 1176 static const char *const errstr4_5[] = { 1177 "obsolete (address mark not found)", 1178 "no media/write protected", "aborted command", 1179 "media change requested", "id not found", "media changed", 1180 "uncorrectable data error", "interface CRC error"}; 1181 const char *const *errstr; 1182 int i; 1183 const char *sep = ""; 1184 1185 const struct dk_softc *dksc = &wd->sc_dksc; 1186 const char *devname = dksc->sc_xname; 1187 struct ata_drive_datas *drvp = wd->drvp; 1188 int errno = xfer->c_bio.r_error; 1189 1190 if (drvp->ata_vers >= 4) 1191 errstr = errstr4_5; 1192 else 1193 errstr = errstr0_3; 1194 1195 printf("%s: (", devname); 1196 1197 if (errno == 0) 1198 printf("error not notified"); 1199 1200 for (i = 0; i < 8; i++) { 1201 if (errno & (1 << i)) { 1202 printf("%s%s", sep, errstr[i]); 1203 sep = ", "; 1204 } 1205 } 1206 printf(")\n"); 1207 } 1208 1209 int 1210 wdioctl(dev_t dev, u_long cmd, void *addr, int flag, struct lwp *l) 1211 { 1212 struct wd_softc *wd = 1213 device_lookup_private(&wd_cd, WDUNIT(dev)); 1214 struct dk_softc *dksc = &wd->sc_dksc; 1215 1216 ATADEBUG_PRINT(("wdioctl\n"), DEBUG_FUNCS); 1217 1218 if ((wd->sc_flags & WDF_LOADED) == 0) 1219 return EIO; 1220 1221 switch (cmd) { 1222 #ifdef HAS_BAD144_HANDLING 1223 case DIOCSBAD: 1224 if ((flag & FWRITE) == 0) 1225 return EBADF; 1226 dksc->sc_dkdev.dk_cpulabel->bad = *(struct dkbad *)addr; 1227 dksc->sc_dkdev.dk_label->d_flags |= D_BADSECT; 1228 bad144intern(wd); 1229 return 0; 1230 #endif 1231 #ifdef WD_SOFTBADSECT 1232 case DIOCBSLIST : 1233 { 1234 uint32_t count, missing, skip; 1235 struct disk_badsecinfo dbsi; 1236 struct disk_badsectors *dbs; 1237 size_t available; 1238 uint8_t *laddr; 1239 1240 dbsi = *(struct disk_badsecinfo *)addr; 1241 missing = wd->sc_bscount; 1242 count = 0; 1243 available = dbsi.dbsi_bufsize; 1244 skip = dbsi.dbsi_skip; 1245 laddr = (uint8_t *)dbsi.dbsi_buffer; 1246 1247 /* 1248 * We start this loop with the expectation that all of the 1249 * entries will be missed and decrement this counter each 1250 * time we either skip over one (already copied out) or 1251 * we actually copy it back to user space. The structs 1252 * holding the bad sector information are copied directly 1253 * back to user space whilst the summary is returned via 1254 * the struct passed in via the ioctl. 1255 */ 1256 mutex_enter(&wd->sc_lock); 1257 SLIST_FOREACH(dbs, &wd->sc_bslist, dbs_next) { 1258 if (skip > 0) { 1259 missing--; 1260 skip--; 1261 continue; 1262 } 1263 if (available < sizeof(*dbs)) 1264 break; 1265 available -= sizeof(*dbs); 1266 copyout(dbs, laddr, sizeof(*dbs)); 1267 laddr += sizeof(*dbs); 1268 missing--; 1269 count++; 1270 } 1271 mutex_exit(&wd->sc_lock); 1272 dbsi.dbsi_left = missing; 1273 dbsi.dbsi_copied = count; 1274 *(struct disk_badsecinfo *)addr = dbsi; 1275 return 0; 1276 } 1277 1278 case DIOCBSFLUSH : 1279 /* Clean out the bad sector list */ 1280 mutex_enter(&wd->sc_lock); 1281 while (!SLIST_EMPTY(&wd->sc_bslist)) { 1282 struct disk_badsectors *dbs = 1283 SLIST_FIRST(&wd->sc_bslist); 1284 SLIST_REMOVE_HEAD(&wd->sc_bslist, dbs_next); 1285 kmem_free(dbs, sizeof(*dbs)); 1286 } 1287 mutex_exit(&wd->sc_lock); 1288 wd->sc_bscount = 0; 1289 return 0; 1290 #endif 1291 1292 #ifdef notyet 1293 case DIOCWFORMAT: 1294 if ((flag & FWRITE) == 0) 1295 return EBADF; 1296 { 1297 register struct format_op *fop; 1298 struct iovec aiov; 1299 struct uio auio; 1300 int error1; 1301 1302 fop = (struct format_op *)addr; 1303 aiov.iov_base = fop->df_buf; 1304 aiov.iov_len = fop->df_count; 1305 auio.uio_iov = &aiov; 1306 auio.uio_iovcnt = 1; 1307 auio.uio_resid = fop->df_count; 1308 auio.uio_offset = 1309 fop->df_startblk * wd->sc_dk.dk_label->d_secsize; 1310 auio.uio_vmspace = l->l_proc->p_vmspace; 1311 error1 = physio(wdformat, NULL, dev, B_WRITE, wdminphys, 1312 &auio); 1313 fop->df_count -= auio.uio_resid; 1314 fop->df_reg[0] = wdc->sc_status; 1315 fop->df_reg[1] = wdc->sc_error; 1316 return error1; 1317 } 1318 #endif 1319 case DIOCGCACHE: 1320 return wd_getcache(wd, (int *)addr); 1321 1322 case DIOCSCACHE: 1323 return wd_setcache(wd, *(int *)addr); 1324 1325 case DIOCCACHESYNC: 1326 return wd_flushcache(wd, AT_WAIT, true); 1327 1328 case ATAIOCCOMMAND: 1329 /* 1330 * Make sure this command is (relatively) safe first 1331 */ 1332 if ((((atareq_t *) addr)->flags & ATACMD_READ) == 0 && 1333 (flag & FWRITE) == 0) 1334 return (EBADF); 1335 { 1336 struct wd_ioctl *wi; 1337 atareq_t *atareq = (atareq_t *) addr; 1338 int error1; 1339 1340 wi = wi_get(wd); 1341 wi->wi_atareq = *atareq; 1342 1343 if (atareq->datalen && atareq->flags & 1344 (ATACMD_READ | ATACMD_WRITE)) { 1345 void *tbuf; 1346 if (atareq->datalen < DEV_BSIZE 1347 && atareq->command == WDCC_IDENTIFY) { 1348 tbuf = kmem_zalloc(DEV_BSIZE, KM_SLEEP); 1349 wi->wi_iov.iov_base = tbuf; 1350 wi->wi_iov.iov_len = DEV_BSIZE; 1351 UIO_SETUP_SYSSPACE(&wi->wi_uio); 1352 } else { 1353 tbuf = NULL; 1354 wi->wi_iov.iov_base = atareq->databuf; 1355 wi->wi_iov.iov_len = atareq->datalen; 1356 wi->wi_uio.uio_vmspace = l->l_proc->p_vmspace; 1357 } 1358 wi->wi_uio.uio_iov = &wi->wi_iov; 1359 wi->wi_uio.uio_iovcnt = 1; 1360 wi->wi_uio.uio_resid = atareq->datalen; 1361 wi->wi_uio.uio_offset = 0; 1362 wi->wi_uio.uio_rw = 1363 (atareq->flags & ATACMD_READ) ? B_READ : B_WRITE; 1364 error1 = physio(wdioctlstrategy, &wi->wi_bp, dev, 1365 (atareq->flags & ATACMD_READ) ? B_READ : B_WRITE, 1366 wdminphys, &wi->wi_uio); 1367 if (tbuf != NULL && error1 == 0) { 1368 error1 = copyout(tbuf, atareq->databuf, 1369 atareq->datalen); 1370 kmem_free(tbuf, DEV_BSIZE); 1371 } 1372 } else { 1373 /* No need to call physio if we don't have any 1374 user data */ 1375 wi->wi_bp.b_flags = 0; 1376 wi->wi_bp.b_data = 0; 1377 wi->wi_bp.b_bcount = 0; 1378 wi->wi_bp.b_dev = dev; 1379 wi->wi_bp.b_proc = l->l_proc; 1380 wdioctlstrategy(&wi->wi_bp); 1381 error1 = wi->wi_bp.b_error; 1382 } 1383 *atareq = wi->wi_atareq; 1384 wi_free(wi); 1385 return(error1); 1386 } 1387 1388 default: 1389 return dk_ioctl(dksc, dev, cmd, addr, flag, l); 1390 } 1391 1392 #ifdef DIAGNOSTIC 1393 panic("wdioctl: impossible"); 1394 #endif 1395 } 1396 1397 static int 1398 wd_discard(device_t dev, off_t pos, off_t len) 1399 { 1400 struct wd_softc *wd = device_private(dev); 1401 daddr_t bno; 1402 long size, done; 1403 long maxatonce, amount; 1404 int result; 1405 1406 if (!(wd->sc_params.atap_ata_major & WDC_VER_ATA7) 1407 || !(wd->sc_params.support_dsm & ATA_SUPPORT_DSM_TRIM)) { 1408 /* not supported; ignore request */ 1409 ATADEBUG_PRINT(("wddiscard (unsupported)\n"), DEBUG_FUNCS); 1410 return 0; 1411 } 1412 maxatonce = 0xffff; /*wd->sc_params.max_dsm_blocks*/ 1413 1414 ATADEBUG_PRINT(("wddiscard\n"), DEBUG_FUNCS); 1415 1416 if ((wd->sc_flags & WDF_LOADED) == 0) 1417 return EIO; 1418 1419 /* round the start up and the end down */ 1420 bno = (pos + wd->sc_blksize - 1) / wd->sc_blksize; 1421 size = ((pos + len) / wd->sc_blksize) - bno; 1422 1423 done = 0; 1424 while (done < size) { 1425 amount = size - done; 1426 if (amount > maxatonce) { 1427 amount = maxatonce; 1428 } 1429 result = wd_trim(wd, bno + done, amount); 1430 if (result) { 1431 return result; 1432 } 1433 done += amount; 1434 } 1435 return 0; 1436 } 1437 1438 static int 1439 wddiscard(dev_t dev, off_t pos, off_t len) 1440 { 1441 struct wd_softc *wd; 1442 struct dk_softc *dksc; 1443 int unit; 1444 1445 unit = WDUNIT(dev); 1446 wd = device_lookup_private(&wd_cd, unit); 1447 dksc = &wd->sc_dksc; 1448 1449 return dk_discard(dksc, dev, pos, len); 1450 } 1451 1452 #ifdef B_FORMAT 1453 int 1454 wdformat(struct buf *bp) 1455 { 1456 1457 bp->b_flags |= B_FORMAT; 1458 return wdstrategy(bp); 1459 } 1460 #endif 1461 1462 int 1463 wdsize(dev_t dev) 1464 { 1465 struct wd_softc *wd; 1466 struct dk_softc *dksc; 1467 int unit; 1468 1469 ATADEBUG_PRINT(("wdsize\n"), DEBUG_FUNCS); 1470 1471 unit = WDUNIT(dev); 1472 wd = device_lookup_private(&wd_cd, unit); 1473 if (wd == NULL) 1474 return (-1); 1475 dksc = &wd->sc_dksc; 1476 1477 if (!device_is_active(dksc->sc_dev)) 1478 return (-1); 1479 1480 return dk_size(dksc, dev); 1481 } 1482 1483 /* 1484 * Dump core after a system crash. 1485 */ 1486 static int 1487 wddump(dev_t dev, daddr_t blkno, void *va, size_t size) 1488 { 1489 struct wd_softc *wd; 1490 struct dk_softc *dksc; 1491 int unit; 1492 1493 /* Check if recursive dump; if so, punt. */ 1494 if (wddoingadump) 1495 return EFAULT; 1496 wddoingadump = 1; 1497 1498 unit = WDUNIT(dev); 1499 wd = device_lookup_private(&wd_cd, unit); 1500 if (wd == NULL) 1501 return (ENXIO); 1502 dksc = &wd->sc_dksc; 1503 1504 return dk_dump(dksc, dev, blkno, va, size); 1505 } 1506 1507 static int 1508 wd_dumpblocks(device_t dev, void *va, daddr_t blkno, int nblk) 1509 { 1510 struct wd_softc *wd = device_private(dev); 1511 struct dk_softc *dksc = &wd->sc_dksc; 1512 struct disk_geom *dg = &dksc->sc_dkdev.dk_geom; 1513 struct ata_xfer *xfer = &wd->dump_xfer; 1514 int err; 1515 1516 /* Recalibrate, if first dump transfer. */ 1517 if (wddumprecalibrated == 0) { 1518 wddumprecalibrated = 1; 1519 ata_channel_lock(wd->drvp->chnl_softc); 1520 /* This will directly execute the reset due to AT_POLL */ 1521 ata_thread_run(wd->drvp->chnl_softc, AT_POLL, 1522 ATACH_TH_DRIVE_RESET, wd->drvp->drive); 1523 1524 wd->drvp->state = RESET; 1525 ata_channel_unlock(wd->drvp->chnl_softc); 1526 } 1527 1528 memset(xfer, 0, sizeof(*xfer)); 1529 xfer->c_flags |= C_PRIVATE_ALLOC | C_SKIP_QUEUE; 1530 1531 xfer->c_bio.blkno = blkno; 1532 xfer->c_bio.flags = ATA_POLL; 1533 if (wd->sc_flags & WDF_LBA48 && 1534 (xfer->c_bio.blkno + nblk) > wd->sc_capacity28) 1535 xfer->c_bio.flags |= ATA_LBA48; 1536 if (wd->sc_flags & WDF_LBA) 1537 xfer->c_bio.flags |= ATA_LBA; 1538 xfer->c_bio.bcount = nblk * dg->dg_secsize; 1539 xfer->c_bio.databuf = va; 1540 #ifndef WD_DUMP_NOT_TRUSTED 1541 switch (err = wd->atabus->ata_bio(wd->drvp, xfer)) { 1542 case ATACMD_TRY_AGAIN: 1543 panic("wddump: try again"); 1544 break; 1545 case ATACMD_QUEUED: 1546 panic("wddump: polled command has been queued"); 1547 break; 1548 case ATACMD_COMPLETE: 1549 break; 1550 default: 1551 panic("wddump: unknown atacmd code %d", err); 1552 } 1553 switch(err = xfer->c_bio.error) { 1554 case TIMEOUT: 1555 printf("wddump: device timed out"); 1556 err = EIO; 1557 break; 1558 case ERR_DF: 1559 printf("wddump: drive fault"); 1560 err = EIO; 1561 break; 1562 case ERR_DMA: 1563 printf("wddump: DMA error"); 1564 err = EIO; 1565 break; 1566 case ERROR: 1567 printf("wddump: "); 1568 wdperror(wd, xfer); 1569 err = EIO; 1570 break; 1571 case NOERROR: 1572 err = 0; 1573 break; 1574 default: 1575 panic("wddump: unknown error type %x", err); 1576 } 1577 1578 if (err != 0) { 1579 printf("\n"); 1580 return err; 1581 } 1582 #else /* WD_DUMP_NOT_TRUSTED */ 1583 /* Let's just talk about this first... */ 1584 printf("wd%d: dump addr 0x%x, cylin %d, head %d, sector %d\n", 1585 unit, va, cylin, head, sector); 1586 delay(500 * 1000); /* half a second */ 1587 #endif 1588 1589 wddoingadump = 0; 1590 return 0; 1591 } 1592 1593 #ifdef HAS_BAD144_HANDLING 1594 /* 1595 * Internalize the bad sector table. 1596 */ 1597 void 1598 bad144intern(struct wd_softc *wd) 1599 { 1600 struct dk_softc *dksc = &wd->sc_dksc; 1601 struct dkbad *bt = &dksc->sc_dkdev.dk_cpulabel->bad; 1602 struct disklabel *lp = dksc->sc_dkdev.dk_label; 1603 int i = 0; 1604 1605 ATADEBUG_PRINT(("bad144intern\n"), DEBUG_XFERS); 1606 1607 for (; i < NBT_BAD; i++) { 1608 if (bt->bt_bad[i].bt_cyl == 0xffff) 1609 break; 1610 wd->drvp->badsect[i] = 1611 bt->bt_bad[i].bt_cyl * lp->d_secpercyl + 1612 (bt->bt_bad[i].bt_trksec >> 8) * lp->d_nsectors + 1613 (bt->bt_bad[i].bt_trksec & 0xff); 1614 } 1615 for (; i < NBT_BAD+1; i++) 1616 wd->drvp->badsect[i] = -1; 1617 } 1618 #endif 1619 1620 static void 1621 wd_set_geometry(struct wd_softc *wd) 1622 { 1623 struct dk_softc *dksc = &wd->sc_dksc; 1624 struct disk_geom *dg = &dksc->sc_dkdev.dk_geom; 1625 1626 memset(dg, 0, sizeof(*dg)); 1627 1628 dg->dg_secperunit = wd->sc_capacity; 1629 dg->dg_secsize = wd->sc_blksize; 1630 dg->dg_nsectors = wd->sc_params.atap_sectors; 1631 dg->dg_ntracks = wd->sc_params.atap_heads; 1632 if ((wd->sc_flags & WDF_LBA) == 0) 1633 dg->dg_ncylinders = wd->sc_params.atap_cylinders; 1634 1635 disk_set_info(dksc->sc_dev, &dksc->sc_dkdev, wd->sc_typename); 1636 } 1637 1638 int 1639 wd_get_params(struct wd_softc *wd, uint8_t flags, struct ataparams *params) 1640 { 1641 int retry = 0; 1642 1643 again: 1644 switch (wd->atabus->ata_get_params(wd->drvp, flags, params)) { 1645 case CMD_AGAIN: 1646 return 1; 1647 case CMD_ERR: 1648 if (retry == 0) { 1649 retry++; 1650 (*wd->atabus->ata_reset_drive)(wd->drvp, 1651 flags | AT_RST_NOCMD, NULL); 1652 goto again; 1653 } 1654 1655 if (wd->drvp->drive_type != ATA_DRIVET_OLD) 1656 return 1; 1657 /* 1658 * We `know' there's a drive here; just assume it's old. 1659 * This geometry is only used to read the MBR and print a 1660 * (false) attach message. 1661 */ 1662 strncpy(params->atap_model, "ST506", 1663 sizeof params->atap_model); 1664 params->atap_config = ATA_CFG_FIXED; 1665 params->atap_cylinders = 1024; 1666 params->atap_heads = 8; 1667 params->atap_sectors = 17; 1668 params->atap_multi = 1; 1669 params->atap_capabilities1 = params->atap_capabilities2 = 0; 1670 wd->drvp->ata_vers = -1; /* Mark it as pre-ATA */ 1671 /* FALLTHROUGH */ 1672 case CMD_OK: 1673 return 0; 1674 default: 1675 panic("wd_get_params: bad return code from ata_get_params"); 1676 /* NOTREACHED */ 1677 } 1678 } 1679 1680 int 1681 wd_getcache(struct wd_softc *wd, int *bitsp) 1682 { 1683 struct ataparams params; 1684 1685 if (wd_get_params(wd, AT_WAIT, ¶ms) != 0) 1686 return EIO; 1687 if (params.atap_cmd_set1 == 0x0000 || 1688 params.atap_cmd_set1 == 0xffff || 1689 (params.atap_cmd_set1 & WDC_CMD1_CACHE) == 0) { 1690 *bitsp = 0; 1691 return 0; 1692 } 1693 *bitsp = DKCACHE_WCHANGE | DKCACHE_READ; 1694 if (params.atap_cmd1_en & WDC_CMD1_CACHE) 1695 *bitsp |= DKCACHE_WRITE; 1696 1697 if (WD_USE_NCQ(wd) || (wd->drvp->drive_flags & ATA_DRIVE_WFUA)) 1698 *bitsp |= DKCACHE_FUA; 1699 1700 return 0; 1701 } 1702 1703 const char at_errbits[] = "\20\10ERROR\11TIMEOU\12DF"; 1704 1705 int 1706 wd_setcache(struct wd_softc *wd, int bits) 1707 { 1708 struct dk_softc *dksc = &wd->sc_dksc; 1709 struct ataparams params; 1710 struct ata_xfer *xfer; 1711 int error; 1712 1713 if (wd_get_params(wd, AT_WAIT, ¶ms) != 0) 1714 return EIO; 1715 1716 if (params.atap_cmd_set1 == 0x0000 || 1717 params.atap_cmd_set1 == 0xffff || 1718 (params.atap_cmd_set1 & WDC_CMD1_CACHE) == 0) 1719 return EOPNOTSUPP; 1720 1721 if ((bits & DKCACHE_READ) == 0 || 1722 (bits & DKCACHE_SAVE) != 0) 1723 return EOPNOTSUPP; 1724 1725 xfer = ata_get_xfer(wd->drvp->chnl_softc, true); 1726 1727 xfer->c_ata_c.r_command = SET_FEATURES; 1728 xfer->c_ata_c.r_st_bmask = 0; 1729 xfer->c_ata_c.r_st_pmask = 0; 1730 xfer->c_ata_c.timeout = 30000; /* 30s timeout */ 1731 xfer->c_ata_c.flags = AT_WAIT; 1732 if (bits & DKCACHE_WRITE) 1733 xfer->c_ata_c.r_features = WDSF_WRITE_CACHE_EN; 1734 else 1735 xfer->c_ata_c.r_features = WDSF_WRITE_CACHE_DS; 1736 if (wd->atabus->ata_exec_command(wd->drvp, xfer) != ATACMD_COMPLETE) { 1737 aprint_error_dev(dksc->sc_dev, 1738 "wd_setcache command not complete\n"); 1739 error = EIO; 1740 goto out; 1741 } 1742 1743 if (xfer->c_ata_c.flags & (AT_ERROR | AT_TIMEOU | AT_DF)) { 1744 char sbuf[sizeof(at_errbits) + 64]; 1745 snprintb(sbuf, sizeof(sbuf), at_errbits, xfer->c_ata_c.flags); 1746 aprint_error_dev(dksc->sc_dev, "wd_setcache: status=%s\n", sbuf); 1747 error = EIO; 1748 goto out; 1749 } 1750 1751 error = 0; 1752 1753 out: 1754 ata_free_xfer(wd->drvp->chnl_softc, xfer); 1755 return error; 1756 } 1757 1758 static int 1759 wd_standby(struct wd_softc *wd, int flags) 1760 { 1761 struct dk_softc *dksc = &wd->sc_dksc; 1762 struct ata_xfer *xfer; 1763 int error; 1764 1765 aprint_debug_dev(dksc->sc_dev, "standby immediate\n"); 1766 xfer = ata_get_xfer(wd->drvp->chnl_softc, true); 1767 1768 xfer->c_ata_c.r_command = WDCC_STANDBY_IMMED; 1769 xfer->c_ata_c.r_st_bmask = WDCS_DRDY; 1770 xfer->c_ata_c.r_st_pmask = WDCS_DRDY; 1771 xfer->c_ata_c.flags = flags; 1772 xfer->c_ata_c.timeout = 30000; /* 30s timeout */ 1773 if (wd->atabus->ata_exec_command(wd->drvp, xfer) != ATACMD_COMPLETE) { 1774 aprint_error_dev(dksc->sc_dev, 1775 "standby immediate command didn't complete\n"); 1776 error = EIO; 1777 goto out; 1778 } 1779 if (xfer->c_ata_c.flags & AT_ERROR) { 1780 if (xfer->c_ata_c.r_error == WDCE_ABRT) { 1781 /* command not supported */ 1782 aprint_debug_dev(dksc->sc_dev, 1783 "standby immediate not supported\n"); 1784 error = ENODEV; 1785 goto out; 1786 } 1787 } 1788 if (xfer->c_ata_c.flags & (AT_ERROR | AT_TIMEOU | AT_DF)) { 1789 char sbuf[sizeof(at_errbits) + 64]; 1790 snprintb(sbuf, sizeof(sbuf), at_errbits, xfer->c_ata_c.flags); 1791 aprint_error_dev(dksc->sc_dev, "wd_standby: status=%s\n", sbuf); 1792 error = EIO; 1793 goto out; 1794 } 1795 error = 0; 1796 1797 out: 1798 ata_free_xfer(wd->drvp->chnl_softc, xfer); 1799 return error; 1800 } 1801 1802 int 1803 wd_flushcache(struct wd_softc *wd, int flags, bool start_self) 1804 { 1805 struct dk_softc *dksc = &wd->sc_dksc; 1806 struct ata_xfer *xfer; 1807 int error; 1808 1809 /* 1810 * WDCC_FLUSHCACHE is here since ATA-4, but some drives report 1811 * only ATA-2 and still support it. 1812 */ 1813 if (wd->drvp->ata_vers < 4 && 1814 ((wd->sc_params.atap_cmd_set2 & WDC_CMD2_FC) == 0 || 1815 wd->sc_params.atap_cmd_set2 == 0xffff)) 1816 return ENODEV; 1817 1818 xfer = ata_get_xfer(wd->drvp->chnl_softc, true); 1819 1820 if ((wd->sc_params.atap_cmd2_en & ATA_CMD2_LBA48) != 0 && 1821 (wd->sc_params.atap_cmd2_en & ATA_CMD2_FCE) != 0) { 1822 xfer->c_ata_c.r_command = WDCC_FLUSHCACHE_EXT; 1823 flags |= AT_LBA48; 1824 } else 1825 xfer->c_ata_c.r_command = WDCC_FLUSHCACHE; 1826 xfer->c_ata_c.r_st_bmask = WDCS_DRDY; 1827 xfer->c_ata_c.r_st_pmask = WDCS_DRDY; 1828 xfer->c_ata_c.flags = flags | AT_READREG; 1829 xfer->c_ata_c.timeout = 300000; /* 5m timeout */ 1830 if (wd->atabus->ata_exec_command(wd->drvp, xfer) != ATACMD_COMPLETE) { 1831 aprint_error_dev(dksc->sc_dev, 1832 "flush cache command didn't complete\n"); 1833 error = EIO; 1834 goto out_xfer; 1835 } 1836 if (xfer->c_ata_c.flags & AT_ERROR) { 1837 if (xfer->c_ata_c.r_error == WDCE_ABRT) { 1838 /* command not supported */ 1839 error = ENODEV; 1840 goto out_xfer; 1841 } 1842 } 1843 if (xfer->c_ata_c.flags & (AT_ERROR | AT_TIMEOU | AT_DF)) { 1844 char sbuf[sizeof(at_errbits) + 64]; 1845 snprintb(sbuf, sizeof(sbuf), at_errbits, xfer->c_ata_c.flags); 1846 aprint_error_dev(dksc->sc_dev, "wd_flushcache: status=%s\n", 1847 sbuf); 1848 error = EIO; 1849 goto out_xfer; 1850 } 1851 error = 0; 1852 1853 out_xfer: 1854 ata_free_xfer(wd->drvp->chnl_softc, xfer); 1855 return error; 1856 } 1857 1858 /* 1859 * Execute TRIM command, assumes sleep context. 1860 */ 1861 static int 1862 wd_trim(struct wd_softc *wd, daddr_t bno, long size) 1863 { 1864 struct dk_softc *dksc = &wd->sc_dksc; 1865 struct ata_xfer *xfer; 1866 int error; 1867 unsigned char *req; 1868 1869 xfer = ata_get_xfer(wd->drvp->chnl_softc, true); 1870 1871 req = kmem_zalloc(512, KM_SLEEP); 1872 req[0] = bno & 0xff; 1873 req[1] = (bno >> 8) & 0xff; 1874 req[2] = (bno >> 16) & 0xff; 1875 req[3] = (bno >> 24) & 0xff; 1876 req[4] = (bno >> 32) & 0xff; 1877 req[5] = (bno >> 40) & 0xff; 1878 req[6] = size & 0xff; 1879 req[7] = (size >> 8) & 0xff; 1880 1881 /* 1882 * XXX We could possibly use NCQ TRIM, which supports executing 1883 * this command concurrently. It would need some investigation, some 1884 * early or not so early disk firmware caused data loss with NCQ TRIM. 1885 * atastart() et.al would need to be adjusted to allow and support 1886 * running several non-I/O ATA commands in parallel. 1887 */ 1888 1889 xfer->c_ata_c.r_command = ATA_DATA_SET_MANAGEMENT; 1890 xfer->c_ata_c.r_count = 1; 1891 xfer->c_ata_c.r_features = ATA_SUPPORT_DSM_TRIM; 1892 xfer->c_ata_c.r_st_bmask = WDCS_DRDY; 1893 xfer->c_ata_c.r_st_pmask = WDCS_DRDY; 1894 xfer->c_ata_c.timeout = 30000; /* 30s timeout */ 1895 xfer->c_ata_c.data = req; 1896 xfer->c_ata_c.bcount = 512; 1897 xfer->c_ata_c.flags |= AT_WRITE | AT_WAIT; 1898 if (wd->atabus->ata_exec_command(wd->drvp, xfer) != ATACMD_COMPLETE) { 1899 aprint_error_dev(dksc->sc_dev, 1900 "trim command didn't complete\n"); 1901 kmem_free(req, 512); 1902 error = EIO; 1903 goto out; 1904 } 1905 kmem_free(req, 512); 1906 if (xfer->c_ata_c.flags & AT_ERROR) { 1907 if (xfer->c_ata_c.r_error == WDCE_ABRT) { 1908 /* command not supported */ 1909 error = ENODEV; 1910 goto out; 1911 } 1912 } 1913 if (xfer->c_ata_c.flags & (AT_ERROR | AT_TIMEOU | AT_DF)) { 1914 char sbuf[sizeof(at_errbits) + 64]; 1915 snprintb(sbuf, sizeof(sbuf), at_errbits, xfer->c_ata_c.flags); 1916 aprint_error_dev(dksc->sc_dev, "wd_trim: status=%s\n", 1917 sbuf); 1918 error = EIO; 1919 goto out; 1920 } 1921 error = 0; 1922 1923 out: 1924 ata_free_xfer(wd->drvp->chnl_softc, xfer); 1925 return error; 1926 } 1927 1928 bool 1929 wd_shutdown(device_t dev, int how) 1930 { 1931 struct wd_softc *wd = device_private(dev); 1932 1933 /* the adapter needs to be enabled */ 1934 if (wd->atabus->ata_addref(wd->drvp)) 1935 return true; /* no need to complain */ 1936 1937 wd_flushcache(wd, AT_POLL, false); 1938 if ((how & RB_POWERDOWN) == RB_POWERDOWN) 1939 wd_standby(wd, AT_POLL); 1940 return true; 1941 } 1942 1943 /* 1944 * Allocate space for a ioctl queue structure. Mostly taken from 1945 * scsipi_ioctl.c 1946 */ 1947 struct wd_ioctl * 1948 wi_get(struct wd_softc *wd) 1949 { 1950 struct wd_ioctl *wi; 1951 1952 wi = kmem_zalloc(sizeof(struct wd_ioctl), KM_SLEEP); 1953 wi->wi_softc = wd; 1954 buf_init(&wi->wi_bp); 1955 1956 return (wi); 1957 } 1958 1959 /* 1960 * Free an ioctl structure and remove it from our list 1961 */ 1962 1963 void 1964 wi_free(struct wd_ioctl *wi) 1965 { 1966 buf_destroy(&wi->wi_bp); 1967 kmem_free(wi, sizeof(*wi)); 1968 } 1969 1970 /* 1971 * Find a wd_ioctl structure based on the struct buf. 1972 */ 1973 1974 struct wd_ioctl * 1975 wi_find(struct buf *bp) 1976 { 1977 return container_of(bp, struct wd_ioctl, wi_bp); 1978 } 1979 1980 static uint 1981 wi_sector_size(const struct wd_ioctl * const wi) 1982 { 1983 switch (wi->wi_atareq.command) { 1984 case WDCC_READ: 1985 case WDCC_WRITE: 1986 case WDCC_READMULTI: 1987 case WDCC_WRITEMULTI: 1988 case WDCC_READDMA: 1989 case WDCC_WRITEDMA: 1990 case WDCC_READ_EXT: 1991 case WDCC_WRITE_EXT: 1992 case WDCC_READMULTI_EXT: 1993 case WDCC_WRITEMULTI_EXT: 1994 case WDCC_READDMA_EXT: 1995 case WDCC_WRITEDMA_EXT: 1996 case WDCC_READ_FPDMA_QUEUED: 1997 case WDCC_WRITE_FPDMA_QUEUED: 1998 return wi->wi_softc->sc_blksize; 1999 default: 2000 return 512; 2001 } 2002 } 2003 2004 /* 2005 * Ioctl pseudo strategy routine 2006 * 2007 * This is mostly stolen from scsipi_ioctl.c:scsistrategy(). What 2008 * happens here is: 2009 * 2010 * - wdioctl() queues a wd_ioctl structure. 2011 * 2012 * - wdioctl() calls physio/wdioctlstrategy based on whether or not 2013 * user space I/O is required. If physio() is called, physio() eventually 2014 * calls wdioctlstrategy(). 2015 * 2016 * - In either case, wdioctlstrategy() calls wd->atabus->ata_exec_command() 2017 * to perform the actual command 2018 * 2019 * The reason for the use of the pseudo strategy routine is because 2020 * when doing I/O to/from user space, physio _really_ wants to be in 2021 * the loop. We could put the entire buffer into the ioctl request 2022 * structure, but that won't scale if we want to do things like download 2023 * microcode. 2024 */ 2025 2026 void 2027 wdioctlstrategy(struct buf *bp) 2028 { 2029 struct wd_ioctl *wi; 2030 struct ata_xfer *xfer; 2031 int error = 0; 2032 2033 wi = wi_find(bp); 2034 if (wi == NULL) { 2035 printf("wdioctlstrategy: " 2036 "No matching ioctl request found in queue\n"); 2037 error = EINVAL; 2038 goto out2; 2039 } 2040 2041 xfer = ata_get_xfer(wi->wi_softc->drvp->chnl_softc, true); 2042 2043 /* 2044 * Abort if physio broke up the transfer 2045 */ 2046 2047 if (bp->b_bcount != wi->wi_atareq.datalen) { 2048 printf("physio split wd ioctl request... cannot proceed\n"); 2049 error = EIO; 2050 goto out; 2051 } 2052 2053 /* 2054 * Abort if we didn't get a buffer size that was a multiple of 2055 * our sector size (or overflows CHS/LBA28 sector count) 2056 */ 2057 2058 if ((bp->b_bcount % wi_sector_size(wi)) != 0 || 2059 (bp->b_bcount / wi_sector_size(wi)) >= 2060 (1 << NBBY)) { 2061 error = EINVAL; 2062 goto out; 2063 } 2064 2065 /* 2066 * Make sure a timeout was supplied in the ioctl request 2067 */ 2068 2069 if (wi->wi_atareq.timeout == 0) { 2070 error = EINVAL; 2071 goto out; 2072 } 2073 2074 if (wi->wi_atareq.flags & ATACMD_READ) 2075 xfer->c_ata_c.flags |= AT_READ; 2076 else if (wi->wi_atareq.flags & ATACMD_WRITE) 2077 xfer->c_ata_c.flags |= AT_WRITE; 2078 2079 if (wi->wi_atareq.flags & ATACMD_READREG) 2080 xfer->c_ata_c.flags |= AT_READREG; 2081 2082 if ((wi->wi_atareq.flags & ATACMD_LBA) != 0) 2083 xfer->c_ata_c.flags |= AT_LBA; 2084 2085 xfer->c_ata_c.flags |= AT_WAIT; 2086 2087 xfer->c_ata_c.timeout = wi->wi_atareq.timeout; 2088 xfer->c_ata_c.r_command = wi->wi_atareq.command; 2089 xfer->c_ata_c.r_lba = ((wi->wi_atareq.head & 0x0f) << 24) | 2090 (wi->wi_atareq.cylinder << 8) | 2091 wi->wi_atareq.sec_num; 2092 xfer->c_ata_c.r_count = wi->wi_atareq.sec_count; 2093 xfer->c_ata_c.r_features = wi->wi_atareq.features; 2094 xfer->c_ata_c.r_st_bmask = WDCS_DRDY; 2095 xfer->c_ata_c.r_st_pmask = WDCS_DRDY; 2096 xfer->c_ata_c.data = wi->wi_bp.b_data; 2097 xfer->c_ata_c.bcount = wi->wi_bp.b_bcount; 2098 2099 if (wi->wi_softc->atabus->ata_exec_command(wi->wi_softc->drvp, xfer) 2100 != ATACMD_COMPLETE) { 2101 wi->wi_atareq.retsts = ATACMD_ERROR; 2102 error = EIO; 2103 goto out; 2104 } 2105 2106 if (xfer->c_ata_c.flags & (AT_ERROR | AT_TIMEOU | AT_DF)) { 2107 if (xfer->c_ata_c.flags & AT_ERROR) { 2108 wi->wi_atareq.retsts = ATACMD_ERROR; 2109 wi->wi_atareq.error = xfer->c_ata_c.r_error; 2110 } else if (xfer->c_ata_c.flags & AT_DF) 2111 wi->wi_atareq.retsts = ATACMD_DF; 2112 else 2113 wi->wi_atareq.retsts = ATACMD_TIMEOUT; 2114 } else { 2115 wi->wi_atareq.retsts = ATACMD_OK; 2116 if (wi->wi_atareq.flags & ATACMD_READREG) { 2117 wi->wi_atareq.command = xfer->c_ata_c.r_status; 2118 wi->wi_atareq.features = xfer->c_ata_c.r_error; 2119 wi->wi_atareq.sec_count = xfer->c_ata_c.r_count; 2120 wi->wi_atareq.sec_num = xfer->c_ata_c.r_lba & 0xff; 2121 wi->wi_atareq.head = (xfer->c_ata_c.r_device & 0xf0) | 2122 ((xfer->c_ata_c.r_lba >> 24) & 0x0f); 2123 wi->wi_atareq.cylinder = 2124 (xfer->c_ata_c.r_lba >> 8) & 0xffff; 2125 wi->wi_atareq.error = xfer->c_ata_c.r_error; 2126 } 2127 } 2128 2129 out: 2130 ata_free_xfer(wi->wi_softc->drvp->chnl_softc, xfer); 2131 out2: 2132 bp->b_error = error; 2133 if (error) 2134 bp->b_resid = bp->b_bcount; 2135 biodone(bp); 2136 } 2137 2138 static void 2139 wd_sysctl_attach(struct wd_softc *wd) 2140 { 2141 struct dk_softc *dksc = &wd->sc_dksc; 2142 const struct sysctlnode *node; 2143 int error; 2144 2145 /* sysctl set-up */ 2146 if (sysctl_createv(&wd->nodelog, 0, NULL, &node, 2147 0, CTLTYPE_NODE, dksc->sc_xname, 2148 SYSCTL_DESCR("wd driver settings"), 2149 NULL, 0, NULL, 0, 2150 CTL_HW, CTL_CREATE, CTL_EOL) != 0) { 2151 aprint_error_dev(dksc->sc_dev, 2152 "could not create %s.%s sysctl node\n", 2153 "hw", dksc->sc_xname); 2154 return; 2155 } 2156 2157 wd->drv_ncq = true; 2158 if ((error = sysctl_createv(&wd->nodelog, 0, NULL, NULL, 2159 CTLFLAG_READWRITE, CTLTYPE_BOOL, "use_ncq", 2160 SYSCTL_DESCR("use NCQ if supported"), 2161 NULL, 0, &wd->drv_ncq, 0, 2162 CTL_HW, node->sysctl_num, CTL_CREATE, CTL_EOL)) 2163 != 0) { 2164 aprint_error_dev(dksc->sc_dev, 2165 "could not create %s.%s.use_ncq sysctl - error %d\n", 2166 "hw", dksc->sc_xname, error); 2167 return; 2168 } 2169 2170 wd->drv_ncq_prio = false; 2171 if ((error = sysctl_createv(&wd->nodelog, 0, NULL, NULL, 2172 CTLFLAG_READWRITE, CTLTYPE_BOOL, "use_ncq_prio", 2173 SYSCTL_DESCR("use NCQ PRIORITY if supported"), 2174 NULL, 0, &wd->drv_ncq_prio, 0, 2175 CTL_HW, node->sysctl_num, CTL_CREATE, CTL_EOL)) 2176 != 0) { 2177 aprint_error_dev(dksc->sc_dev, 2178 "could not create %s.%s.use_ncq_prio sysctl - error %d\n", 2179 "hw", dksc->sc_xname, error); 2180 return; 2181 } 2182 2183 #ifdef WD_CHAOS_MONKEY 2184 wd->drv_chaos_freq = 0; 2185 if ((error = sysctl_createv(&wd->nodelog, 0, NULL, NULL, 2186 CTLFLAG_READWRITE, CTLTYPE_INT, "chaos_freq", 2187 SYSCTL_DESCR("simulated bio read error rate"), 2188 NULL, 0, &wd->drv_chaos_freq, 0, 2189 CTL_HW, node->sysctl_num, CTL_CREATE, CTL_EOL)) 2190 != 0) { 2191 aprint_error_dev(dksc->sc_dev, 2192 "could not create %s.%s.chaos_freq sysctl - error %d\n", 2193 "hw", dksc->sc_xname, error); 2194 return; 2195 } 2196 2197 wd->drv_chaos_cnt = 0; 2198 if ((error = sysctl_createv(&wd->nodelog, 0, NULL, NULL, 2199 CTLFLAG_READONLY, CTLTYPE_INT, "chaos_cnt", 2200 SYSCTL_DESCR("number of processed bio reads"), 2201 NULL, 0, &wd->drv_chaos_cnt, 0, 2202 CTL_HW, node->sysctl_num, CTL_CREATE, CTL_EOL)) 2203 != 0) { 2204 aprint_error_dev(dksc->sc_dev, 2205 "could not create %s.%s.chaos_cnt sysctl - error %d\n", 2206 "hw", dksc->sc_xname, error); 2207 return; 2208 } 2209 #endif 2210 2211 } 2212 2213 static void 2214 wd_sysctl_detach(struct wd_softc *wd) 2215 { 2216 sysctl_teardown(&wd->nodelog); 2217 } 2218 2219 #ifdef ATADEBUG 2220 int wddebug(void); 2221 2222 int 2223 wddebug(void) 2224 { 2225 struct wd_softc *wd; 2226 struct dk_softc *dksc; 2227 int unit; 2228 2229 for (unit = 0; unit <= 3; unit++) { 2230 wd = device_lookup_private(&wd_cd, unit); 2231 if (wd == NULL) 2232 continue; 2233 dksc = &wd->sc_dksc; 2234 printf("%s fl %x bufq %p:\n", 2235 dksc->sc_xname, wd->sc_flags, bufq_peek(dksc->sc_bufq)); 2236 2237 atachannel_debug(wd->drvp->chnl_softc); 2238 } 2239 wd->sc_flags &= ~WDF_DIRTY; 2240 return 0; 2241 } 2242 #endif /* ATADEBUG */ 2243
Indexes created Mon Sep 29 21:09:56 GMT 2025