wd.c revision 1.450
1 /* $NetBSD: wd.c,v 1.450 2019/05/24 06:01:05 mlelstv 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 1.450 2019/05/24 06:01:05 mlelstv 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 } else { 725 /* it's a write */ 726 wd->sc_flags |= WDF_DIRTY; 727 } 728 if (bp->b_flags & B_MEDIA_FUA) { 729 /* If not using NCQ, the command WRITE DMA FUA EXT is LBA48 */ 730 KASSERT((wd->sc_flags & WDF_LBA48) != 0); 731 if ((xfer->c_flags & C_NCQ) == 0) 732 xfer->c_bio.flags |= ATA_LBA48; 733 734 xfer->c_bio.flags |= ATA_FUA; 735 } 736 737 wd->inflight++; 738 switch (wd->atabus->ata_bio(wd->drvp, xfer)) { 739 case ATACMD_TRY_AGAIN: 740 panic("wdstart1: try again"); 741 break; 742 case ATACMD_QUEUED: 743 case ATACMD_COMPLETE: 744 break; 745 default: 746 panic("wdstart1: bad return code from ata_bio()"); 747 } 748 } 749 750 static int 751 wd_diskstart(device_t dev, struct buf *bp) 752 { 753 struct wd_softc *wd = device_private(dev); 754 #ifdef ATADEBUG 755 struct dk_softc *dksc = &wd->sc_dksc; 756 #endif 757 struct ata_xfer *xfer; 758 struct ata_channel *chp; 759 unsigned openings; 760 int ticks; 761 762 mutex_enter(&wd->sc_lock); 763 764 chp = wd->drvp->chnl_softc; 765 766 ata_channel_lock(chp); 767 openings = ata_queue_openings(chp); 768 ata_channel_unlock(chp); 769 770 openings = uimin(openings, wd->drvp->drv_openings); 771 772 if (wd->inflight >= openings) { 773 /* 774 * pretend we run out of memory when the queue is full, 775 * so that the operation is retried after a minimal 776 * delay. 777 */ 778 xfer = NULL; 779 ticks = 1; 780 } else { 781 /* 782 * If there is no available memory, retry later. This 783 * happens very rarely and only under memory pressure, 784 * so wait relatively long before retry. 785 */ 786 xfer = ata_get_xfer(chp, false); 787 ticks = hz/2; 788 } 789 790 if (xfer == NULL) { 791 ATADEBUG_PRINT(("wd_diskstart %s no xfer\n", 792 dksc->sc_xname), DEBUG_XFERS); 793 794 /* 795 * The disk queue is pushed automatically when an I/O 796 * operation finishes or another one is queued. We 797 * need this extra timeout because an ATA channel 798 * might be shared by more than one disk queue and 799 * all queues need to be restarted when another slot 800 * becomes available. 801 */ 802 if (!callout_pending(&wd->sc_restart_diskqueue)) { 803 callout_reset(&wd->sc_restart_diskqueue, ticks, 804 wdrestart, dev); 805 } 806 807 mutex_exit(&wd->sc_lock); 808 return EAGAIN; 809 } 810 811 wdstart1(wd, bp, xfer); 812 813 mutex_exit(&wd->sc_lock); 814 815 return 0; 816 } 817 818 /* 819 * Queue a drive for I/O. 820 */ 821 static void 822 wdrestart(void *x) 823 { 824 device_t self = x; 825 struct wd_softc *wd = device_private(self); 826 struct dk_softc *dksc = &wd->sc_dksc; 827 828 ATADEBUG_PRINT(("wdstart %s\n", dksc->sc_xname), 829 DEBUG_XFERS); 830 831 if (!device_is_active(dksc->sc_dev)) 832 return; 833 834 dk_start(dksc, NULL); 835 } 836 837 static void 838 wddone(device_t self, struct ata_xfer *xfer) 839 { 840 struct wd_softc *wd = device_private(self); 841 struct dk_softc *dksc = &wd->sc_dksc; 842 const char *errmsg; 843 int do_perror = 0; 844 struct buf *bp; 845 846 ATADEBUG_PRINT(("wddone %s\n", dksc->sc_xname), 847 DEBUG_XFERS); 848 849 if (__predict_false(wddoingadump)) { 850 /* just drop it to the floor */ 851 ata_free_xfer(wd->drvp->chnl_softc, xfer); 852 return; 853 } 854 855 bp = xfer->c_bio.bp; 856 KASSERT(bp != NULL); 857 858 bp->b_resid = xfer->c_bio.bcount; 859 switch (xfer->c_bio.error) { 860 case ERR_DMA: 861 errmsg = "DMA error"; 862 goto retry; 863 case ERR_DF: 864 errmsg = "device fault"; 865 goto retry; 866 case TIMEOUT: 867 errmsg = "device timeout"; 868 goto retry; 869 case REQUEUE: 870 errmsg = "requeue"; 871 goto retry2; 872 case ERR_RESET: 873 errmsg = "channel reset"; 874 goto retry2; 875 case ERROR: 876 /* Don't care about media change bits */ 877 if (xfer->c_bio.r_error != 0 && 878 (xfer->c_bio.r_error & ~(WDCE_MC | WDCE_MCR)) == 0) 879 goto noerror; 880 errmsg = "error"; 881 do_perror = 1; 882 retry: /* Just reset and retry. Can we do more ? */ 883 if ((xfer->c_flags & C_RECOVERED) == 0) { 884 int wflags = (xfer->c_flags & C_POLL) ? AT_POLL : 0; 885 ata_channel_lock(wd->drvp->chnl_softc); 886 ata_thread_run(wd->drvp->chnl_softc, wflags, 887 ATACH_TH_DRIVE_RESET, wd->drvp->drive); 888 ata_channel_unlock(wd->drvp->chnl_softc); 889 } 890 retry2: 891 mutex_enter(&wd->sc_lock); 892 893 diskerr(bp, "wd", errmsg, LOG_PRINTF, 894 xfer->c_bio.blkdone, dksc->sc_dkdev.dk_label); 895 if (xfer->c_retries < WDIORETRIES) 896 printf(", xfer %"PRIxPTR", retry %d", 897 (intptr_t)xfer & PAGE_MASK, 898 xfer->c_retries); 899 printf("\n"); 900 if (do_perror) 901 wdperror(wd, xfer); 902 903 if (xfer->c_retries < WDIORETRIES) { 904 xfer->c_retries++; 905 906 /* Rerun ASAP if just requeued */ 907 if (xfer->c_bio.error == REQUEUE) { 908 SLIST_INSERT_HEAD(&wd->sc_requeue_list, xfer, 909 c_retrychain); 910 callout_reset(&wd->sc_requeue_callout, 911 1, wdbiorequeue, wd); 912 } else { 913 SLIST_INSERT_HEAD(&wd->sc_retry_list, xfer, 914 c_retrychain); 915 callout_reset(&wd->sc_retry_callout, 916 RECOVERYTIME, wdbioretry, wd); 917 } 918 919 mutex_exit(&wd->sc_lock); 920 return; 921 } 922 923 mutex_exit(&wd->sc_lock); 924 925 #ifdef WD_SOFTBADSECT 926 /* 927 * Not all errors indicate a failed block but those that do, 928 * put the block on the bad-block list for the device. Only 929 * do this for reads because the drive should do it for writes, 930 * itself, according to Manuel. 931 */ 932 if ((bp->b_flags & B_READ) && 933 ((wd->drvp->ata_vers >= 4 && xfer->c_bio.r_error & 64) || 934 (wd->drvp->ata_vers < 4 && xfer->c_bio.r_error & 192))) { 935 struct disk_badsectors *dbs; 936 937 dbs = kmem_zalloc(sizeof *dbs, KM_NOSLEEP); 938 if (dbs == NULL) { 939 aprint_error_dev(dksc->sc_dev, 940 "failed to add bad block to list\n"); 941 goto out; 942 } 943 944 dbs->dbs_min = bp->b_rawblkno; 945 dbs->dbs_max = dbs->dbs_min + 946 (bp->b_bcount /wd->sc_blksize) - 1; 947 microtime(&dbs->dbs_failedat); 948 949 mutex_enter(&wd->sc_lock); 950 SLIST_INSERT_HEAD(&wd->sc_bslist, dbs, dbs_next); 951 wd->sc_bscount++; 952 mutex_exit(&wd->sc_lock); 953 } 954 out: 955 #endif 956 bp->b_error = EIO; 957 break; 958 case NOERROR: 959 #ifdef WD_CHAOS_MONKEY 960 /* 961 * For example Parallels AHCI emulation doesn't actually 962 * return error for the invalid I/O, so just re-run 963 * the request and do not panic. 964 */ 965 if (__predict_false(xfer->c_flags & C_CHAOS)) { 966 xfer->c_bio.error = REQUEUE; 967 errmsg = "chaos noerror"; 968 goto retry2; 969 } 970 #endif 971 972 noerror: if ((xfer->c_bio.flags & ATA_CORR) || xfer->c_retries > 0) 973 device_printf(dksc->sc_dev, 974 "soft error (corrected) xfer %"PRIxPTR"\n", 975 (intptr_t)xfer & PAGE_MASK); 976 break; 977 case ERR_NODEV: 978 bp->b_error = EIO; 979 break; 980 } 981 if (__predict_false(bp->b_error != 0) && bp->b_resid == 0) { 982 /* 983 * the disk or controller sometimes report a complete 984 * xfer, when there has been an error. This is wrong, 985 * assume nothing got transfered in this case 986 */ 987 bp->b_resid = bp->b_bcount; 988 } 989 990 ata_free_xfer(wd->drvp->chnl_softc, xfer); 991 992 wd->inflight--; 993 dk_done(dksc, bp); 994 dk_start(dksc, NULL); 995 } 996 997 static void 998 wdbioretry(void *v) 999 { 1000 struct wd_softc *wd = v; 1001 struct ata_xfer *xfer; 1002 1003 ATADEBUG_PRINT(("%s %s\n", __func__, wd->sc_dksc.sc_xname), 1004 DEBUG_XFERS); 1005 1006 mutex_enter(&wd->sc_lock); 1007 while ((xfer = SLIST_FIRST(&wd->sc_retry_list))) { 1008 SLIST_REMOVE_HEAD(&wd->sc_retry_list, c_retrychain); 1009 wdstart1(wd, xfer->c_bio.bp, xfer); 1010 } 1011 mutex_exit(&wd->sc_lock); 1012 } 1013 1014 static void 1015 wdbiorequeue(void *v) 1016 { 1017 struct wd_softc *wd = v; 1018 struct ata_xfer *xfer; 1019 1020 ATADEBUG_PRINT(("%s %s\n", __func__, wd->sc_dksc.sc_xname), 1021 DEBUG_XFERS); 1022 1023 mutex_enter(&wd->sc_lock); 1024 while ((xfer = SLIST_FIRST(&wd->sc_requeue_list))) { 1025 SLIST_REMOVE_HEAD(&wd->sc_requeue_list, c_retrychain); 1026 wdstart1(wd, xfer->c_bio.bp, xfer); 1027 } 1028 mutex_exit(&wd->sc_lock); 1029 } 1030 1031 static void 1032 wdminphys(struct buf *bp) 1033 { 1034 const struct wd_softc * const wd = 1035 device_lookup_private(&wd_cd, WDUNIT(bp->b_dev)); 1036 int maxsectors; 1037 1038 /* 1039 * The limit is actually 65536 for LBA48 and 256 for non-LBA48, 1040 * but that requires to set the count for the ATA command 1041 * to 0, which is somewhat error prone, so better stay safe. 1042 */ 1043 if (wd->sc_flags & WDF_LBA48) 1044 maxsectors = 65535; 1045 else 1046 maxsectors = 128; 1047 1048 if (bp->b_bcount > (wd->sc_blksize * maxsectors)) 1049 bp->b_bcount = (wd->sc_blksize * maxsectors); 1050 1051 minphys(bp); 1052 } 1053 1054 static void 1055 wd_iosize(device_t dev, int *count) 1056 { 1057 struct buf B; 1058 int bmaj; 1059 1060 bmaj = bdevsw_lookup_major(&wd_bdevsw); 1061 B.b_dev = MAKEWDDEV(bmaj,device_unit(dev),RAW_PART); 1062 B.b_bcount = *count; 1063 1064 wdminphys(&B); 1065 1066 *count = B.b_bcount; 1067 } 1068 1069 static int 1070 wdread(dev_t dev, struct uio *uio, int flags) 1071 { 1072 1073 ATADEBUG_PRINT(("wdread\n"), DEBUG_XFERS); 1074 return (physio(wdstrategy, NULL, dev, B_READ, wdminphys, uio)); 1075 } 1076 1077 static int 1078 wdwrite(dev_t dev, struct uio *uio, int flags) 1079 { 1080 1081 ATADEBUG_PRINT(("wdwrite\n"), DEBUG_XFERS); 1082 return (physio(wdstrategy, NULL, dev, B_WRITE, wdminphys, uio)); 1083 } 1084 1085 static int 1086 wdopen(dev_t dev, int flag, int fmt, struct lwp *l) 1087 { 1088 struct wd_softc *wd; 1089 struct dk_softc *dksc; 1090 int unit, part, error; 1091 1092 ATADEBUG_PRINT(("wdopen\n"), DEBUG_FUNCS); 1093 unit = WDUNIT(dev); 1094 wd = device_lookup_private(&wd_cd, unit); 1095 if (wd == NULL) 1096 return (ENXIO); 1097 dksc = &wd->sc_dksc; 1098 1099 if (! device_is_active(dksc->sc_dev)) 1100 return (ENODEV); 1101 1102 part = WDPART(dev); 1103 1104 if (wd->sc_capacity == 0) 1105 return (ENODEV); 1106 1107 /* 1108 * If any partition is open, but the disk has been invalidated, 1109 * disallow further opens. 1110 */ 1111 if ((wd->sc_flags & (WDF_OPEN | WDF_LOADED)) == WDF_OPEN) { 1112 if (part != RAW_PART || fmt != S_IFCHR) 1113 return EIO; 1114 } 1115 1116 error = dk_open(dksc, dev, flag, fmt, l); 1117 1118 return error; 1119 } 1120 1121 /* 1122 * Serialized by caller 1123 */ 1124 static int 1125 wd_firstopen(device_t self, dev_t dev, int flag, int fmt) 1126 { 1127 struct wd_softc *wd = device_private(self); 1128 struct dk_softc *dksc = &wd->sc_dksc; 1129 int error; 1130 1131 error = wd->atabus->ata_addref(wd->drvp); 1132 if (error) 1133 return error; 1134 1135 if ((wd->sc_flags & WDF_LOADED) == 0) { 1136 int param_error; 1137 1138 /* Load the physical device parameters. */ 1139 param_error = wd_get_params(wd, AT_WAIT, &wd->sc_params); 1140 if (param_error != 0) { 1141 aprint_error_dev(dksc->sc_dev, "IDENTIFY failed\n"); 1142 error = EIO; 1143 goto bad; 1144 } 1145 wd_set_geometry(wd); 1146 wd->sc_flags |= WDF_LOADED; 1147 } 1148 1149 wd->sc_flags |= WDF_OPEN; 1150 return 0; 1151 1152 bad: 1153 wd->atabus->ata_delref(wd->drvp); 1154 return error; 1155 } 1156 1157 /* 1158 * Caller must hold wd->sc_dk.dk_openlock. 1159 */ 1160 static int 1161 wd_lastclose(device_t self) 1162 { 1163 struct wd_softc *wd = device_private(self); 1164 1165 KASSERTMSG(bufq_peek(wd->sc_dksc.sc_bufq) == NULL, "bufq not empty"); 1166 1167 if (wd->sc_flags & WDF_DIRTY) 1168 wd_flushcache(wd, AT_WAIT, false); 1169 1170 wd->atabus->ata_delref(wd->drvp); 1171 wd->sc_flags &= ~WDF_OPEN; 1172 1173 return 0; 1174 } 1175 1176 static int 1177 wdclose(dev_t dev, int flag, int fmt, struct lwp *l) 1178 { 1179 struct wd_softc *wd; 1180 struct dk_softc *dksc; 1181 int unit; 1182 1183 unit = WDUNIT(dev); 1184 wd = device_lookup_private(&wd_cd, unit); 1185 dksc = &wd->sc_dksc; 1186 1187 return dk_close(dksc, dev, flag, fmt, l); 1188 } 1189 1190 void 1191 wdperror(const struct wd_softc *wd, struct ata_xfer *xfer) 1192 { 1193 static const char *const errstr0_3[] = {"address mark not found", 1194 "track 0 not found", "aborted command", "media change requested", 1195 "id not found", "media changed", "uncorrectable data error", 1196 "bad block detected"}; 1197 static const char *const errstr4_5[] = { 1198 "obsolete (address mark not found)", 1199 "no media/write protected", "aborted command", 1200 "media change requested", "id not found", "media changed", 1201 "uncorrectable data error", "interface CRC error"}; 1202 const char *const *errstr; 1203 int i; 1204 const char *sep = ""; 1205 1206 const struct dk_softc *dksc = &wd->sc_dksc; 1207 const char *devname = dksc->sc_xname; 1208 struct ata_drive_datas *drvp = wd->drvp; 1209 int errno = xfer->c_bio.r_error; 1210 1211 if (drvp->ata_vers >= 4) 1212 errstr = errstr4_5; 1213 else 1214 errstr = errstr0_3; 1215 1216 printf("%s: (", devname); 1217 1218 if (errno == 0) 1219 printf("error not notified"); 1220 1221 for (i = 0; i < 8; i++) { 1222 if (errno & (1 << i)) { 1223 printf("%s%s", sep, errstr[i]); 1224 sep = ", "; 1225 } 1226 } 1227 printf(")\n"); 1228 } 1229 1230 int 1231 wdioctl(dev_t dev, u_long cmd, void *addr, int flag, struct lwp *l) 1232 { 1233 struct wd_softc *wd = 1234 device_lookup_private(&wd_cd, WDUNIT(dev)); 1235 struct dk_softc *dksc = &wd->sc_dksc; 1236 1237 ATADEBUG_PRINT(("wdioctl\n"), DEBUG_FUNCS); 1238 1239 if ((wd->sc_flags & WDF_LOADED) == 0) 1240 return EIO; 1241 1242 switch (cmd) { 1243 #ifdef HAS_BAD144_HANDLING 1244 case DIOCSBAD: 1245 if ((flag & FWRITE) == 0) 1246 return EBADF; 1247 dksc->sc_dkdev.dk_cpulabel->bad = *(struct dkbad *)addr; 1248 dksc->sc_dkdev.dk_label->d_flags |= D_BADSECT; 1249 bad144intern(wd); 1250 return 0; 1251 #endif 1252 #ifdef WD_SOFTBADSECT 1253 case DIOCBSLIST : 1254 { 1255 uint32_t count, missing, skip; 1256 struct disk_badsecinfo dbsi; 1257 struct disk_badsectors *dbs; 1258 size_t available; 1259 uint8_t *laddr; 1260 1261 dbsi = *(struct disk_badsecinfo *)addr; 1262 missing = wd->sc_bscount; 1263 count = 0; 1264 available = dbsi.dbsi_bufsize; 1265 skip = dbsi.dbsi_skip; 1266 laddr = (uint8_t *)dbsi.dbsi_buffer; 1267 1268 /* 1269 * We start this loop with the expectation that all of the 1270 * entries will be missed and decrement this counter each 1271 * time we either skip over one (already copied out) or 1272 * we actually copy it back to user space. The structs 1273 * holding the bad sector information are copied directly 1274 * back to user space whilst the summary is returned via 1275 * the struct passed in via the ioctl. 1276 */ 1277 mutex_enter(&wd->sc_lock); 1278 SLIST_FOREACH(dbs, &wd->sc_bslist, dbs_next) { 1279 if (skip > 0) { 1280 missing--; 1281 skip--; 1282 continue; 1283 } 1284 if (available < sizeof(*dbs)) 1285 break; 1286 available -= sizeof(*dbs); 1287 copyout(dbs, laddr, sizeof(*dbs)); 1288 laddr += sizeof(*dbs); 1289 missing--; 1290 count++; 1291 } 1292 mutex_exit(&wd->sc_lock); 1293 dbsi.dbsi_left = missing; 1294 dbsi.dbsi_copied = count; 1295 *(struct disk_badsecinfo *)addr = dbsi; 1296 return 0; 1297 } 1298 1299 case DIOCBSFLUSH : 1300 /* Clean out the bad sector list */ 1301 mutex_enter(&wd->sc_lock); 1302 while (!SLIST_EMPTY(&wd->sc_bslist)) { 1303 struct disk_badsectors *dbs = 1304 SLIST_FIRST(&wd->sc_bslist); 1305 SLIST_REMOVE_HEAD(&wd->sc_bslist, dbs_next); 1306 kmem_free(dbs, sizeof(*dbs)); 1307 } 1308 mutex_exit(&wd->sc_lock); 1309 wd->sc_bscount = 0; 1310 return 0; 1311 #endif 1312 1313 #ifdef notyet 1314 case DIOCWFORMAT: 1315 if ((flag & FWRITE) == 0) 1316 return EBADF; 1317 { 1318 register struct format_op *fop; 1319 struct iovec aiov; 1320 struct uio auio; 1321 int error1; 1322 1323 fop = (struct format_op *)addr; 1324 aiov.iov_base = fop->df_buf; 1325 aiov.iov_len = fop->df_count; 1326 auio.uio_iov = &aiov; 1327 auio.uio_iovcnt = 1; 1328 auio.uio_resid = fop->df_count; 1329 auio.uio_offset = 1330 fop->df_startblk * wd->sc_dk.dk_label->d_secsize; 1331 auio.uio_vmspace = l->l_proc->p_vmspace; 1332 error1 = physio(wdformat, NULL, dev, B_WRITE, wdminphys, 1333 &auio); 1334 fop->df_count -= auio.uio_resid; 1335 fop->df_reg[0] = wdc->sc_status; 1336 fop->df_reg[1] = wdc->sc_error; 1337 return error1; 1338 } 1339 #endif 1340 case DIOCGCACHE: 1341 return wd_getcache(wd, (int *)addr); 1342 1343 case DIOCSCACHE: 1344 return wd_setcache(wd, *(int *)addr); 1345 1346 case DIOCCACHESYNC: 1347 return wd_flushcache(wd, AT_WAIT, true); 1348 1349 case ATAIOCCOMMAND: 1350 /* 1351 * Make sure this command is (relatively) safe first 1352 */ 1353 if ((((atareq_t *) addr)->flags & ATACMD_READ) == 0 && 1354 (flag & FWRITE) == 0) 1355 return (EBADF); 1356 { 1357 struct wd_ioctl *wi; 1358 atareq_t *atareq = (atareq_t *) addr; 1359 int error1; 1360 1361 wi = wi_get(wd); 1362 wi->wi_atareq = *atareq; 1363 1364 if (atareq->datalen && atareq->flags & 1365 (ATACMD_READ | ATACMD_WRITE)) { 1366 void *tbuf; 1367 if (atareq->datalen < DEV_BSIZE 1368 && atareq->command == WDCC_IDENTIFY) { 1369 tbuf = kmem_zalloc(DEV_BSIZE, KM_SLEEP); 1370 wi->wi_iov.iov_base = tbuf; 1371 wi->wi_iov.iov_len = DEV_BSIZE; 1372 UIO_SETUP_SYSSPACE(&wi->wi_uio); 1373 } else { 1374 tbuf = NULL; 1375 wi->wi_iov.iov_base = atareq->databuf; 1376 wi->wi_iov.iov_len = atareq->datalen; 1377 wi->wi_uio.uio_vmspace = l->l_proc->p_vmspace; 1378 } 1379 wi->wi_uio.uio_iov = &wi->wi_iov; 1380 wi->wi_uio.uio_iovcnt = 1; 1381 wi->wi_uio.uio_resid = atareq->datalen; 1382 wi->wi_uio.uio_offset = 0; 1383 wi->wi_uio.uio_rw = 1384 (atareq->flags & ATACMD_READ) ? B_READ : B_WRITE; 1385 error1 = physio(wdioctlstrategy, &wi->wi_bp, dev, 1386 (atareq->flags & ATACMD_READ) ? B_READ : B_WRITE, 1387 wdminphys, &wi->wi_uio); 1388 if (tbuf != NULL && error1 == 0) { 1389 error1 = copyout(tbuf, atareq->databuf, 1390 atareq->datalen); 1391 kmem_free(tbuf, DEV_BSIZE); 1392 } 1393 } else { 1394 /* No need to call physio if we don't have any 1395 user data */ 1396 wi->wi_bp.b_flags = 0; 1397 wi->wi_bp.b_data = 0; 1398 wi->wi_bp.b_bcount = 0; 1399 wi->wi_bp.b_dev = dev; 1400 wi->wi_bp.b_proc = l->l_proc; 1401 wdioctlstrategy(&wi->wi_bp); 1402 error1 = wi->wi_bp.b_error; 1403 } 1404 *atareq = wi->wi_atareq; 1405 wi_free(wi); 1406 return(error1); 1407 } 1408 1409 default: 1410 return dk_ioctl(dksc, dev, cmd, addr, flag, l); 1411 } 1412 1413 #ifdef DIAGNOSTIC 1414 panic("wdioctl: impossible"); 1415 #endif 1416 } 1417 1418 static int 1419 wd_discard(device_t dev, off_t pos, off_t len) 1420 { 1421 struct wd_softc *wd = device_private(dev); 1422 daddr_t bno; 1423 long size, done; 1424 long maxatonce, amount; 1425 int result; 1426 1427 if (!(wd->sc_params.atap_ata_major & WDC_VER_ATA7) 1428 || !(wd->sc_params.support_dsm & ATA_SUPPORT_DSM_TRIM)) { 1429 /* not supported; ignore request */ 1430 ATADEBUG_PRINT(("wddiscard (unsupported)\n"), DEBUG_FUNCS); 1431 return 0; 1432 } 1433 maxatonce = 0xffff; /*wd->sc_params.max_dsm_blocks*/ 1434 1435 ATADEBUG_PRINT(("wddiscard\n"), DEBUG_FUNCS); 1436 1437 if ((wd->sc_flags & WDF_LOADED) == 0) 1438 return EIO; 1439 1440 /* round the start up and the end down */ 1441 bno = (pos + wd->sc_blksize - 1) / wd->sc_blksize; 1442 size = ((pos + len) / wd->sc_blksize) - bno; 1443 1444 done = 0; 1445 while (done < size) { 1446 amount = size - done; 1447 if (amount > maxatonce) { 1448 amount = maxatonce; 1449 } 1450 result = wd_trim(wd, bno + done, amount); 1451 if (result) { 1452 return result; 1453 } 1454 done += amount; 1455 } 1456 return 0; 1457 } 1458 1459 static int 1460 wddiscard(dev_t dev, off_t pos, off_t len) 1461 { 1462 struct wd_softc *wd; 1463 struct dk_softc *dksc; 1464 int unit; 1465 1466 unit = WDUNIT(dev); 1467 wd = device_lookup_private(&wd_cd, unit); 1468 dksc = &wd->sc_dksc; 1469 1470 return dk_discard(dksc, dev, pos, len); 1471 } 1472 1473 #ifdef B_FORMAT 1474 int 1475 wdformat(struct buf *bp) 1476 { 1477 1478 bp->b_flags |= B_FORMAT; 1479 return wdstrategy(bp); 1480 } 1481 #endif 1482 1483 int 1484 wdsize(dev_t dev) 1485 { 1486 struct wd_softc *wd; 1487 struct dk_softc *dksc; 1488 int unit; 1489 1490 ATADEBUG_PRINT(("wdsize\n"), DEBUG_FUNCS); 1491 1492 unit = WDUNIT(dev); 1493 wd = device_lookup_private(&wd_cd, unit); 1494 if (wd == NULL) 1495 return (-1); 1496 dksc = &wd->sc_dksc; 1497 1498 if (!device_is_active(dksc->sc_dev)) 1499 return (-1); 1500 1501 return dk_size(dksc, dev); 1502 } 1503 1504 /* 1505 * Dump core after a system crash. 1506 */ 1507 static int 1508 wddump(dev_t dev, daddr_t blkno, void *va, size_t size) 1509 { 1510 struct wd_softc *wd; 1511 struct dk_softc *dksc; 1512 int unit; 1513 1514 /* Check if recursive dump; if so, punt. */ 1515 if (wddoingadump) 1516 return EFAULT; 1517 wddoingadump = 1; 1518 1519 unit = WDUNIT(dev); 1520 wd = device_lookup_private(&wd_cd, unit); 1521 if (wd == NULL) 1522 return (ENXIO); 1523 dksc = &wd->sc_dksc; 1524 1525 return dk_dump(dksc, dev, blkno, va, size); 1526 } 1527 1528 static int 1529 wd_dumpblocks(device_t dev, void *va, daddr_t blkno, int nblk) 1530 { 1531 struct wd_softc *wd = device_private(dev); 1532 struct dk_softc *dksc = &wd->sc_dksc; 1533 struct disk_geom *dg = &dksc->sc_dkdev.dk_geom; 1534 struct ata_xfer *xfer = &wd->dump_xfer; 1535 int err; 1536 1537 /* Recalibrate, if first dump transfer. */ 1538 if (wddumprecalibrated == 0) { 1539 wddumprecalibrated = 1; 1540 ata_channel_lock(wd->drvp->chnl_softc); 1541 /* This will directly execute the reset due to AT_POLL */ 1542 ata_thread_run(wd->drvp->chnl_softc, AT_POLL, 1543 ATACH_TH_DRIVE_RESET, wd->drvp->drive); 1544 1545 wd->drvp->state = RESET; 1546 ata_channel_unlock(wd->drvp->chnl_softc); 1547 } 1548 1549 memset(xfer, 0, sizeof(*xfer)); 1550 xfer->c_flags |= C_PRIVATE_ALLOC | C_SKIP_QUEUE; 1551 1552 xfer->c_bio.blkno = blkno; 1553 xfer->c_bio.flags = ATA_POLL; 1554 if (wd->sc_flags & WDF_LBA48 && 1555 (xfer->c_bio.blkno + nblk) > wd->sc_capacity28) 1556 xfer->c_bio.flags |= ATA_LBA48; 1557 if (wd->sc_flags & WDF_LBA) 1558 xfer->c_bio.flags |= ATA_LBA; 1559 xfer->c_bio.bcount = nblk * dg->dg_secsize; 1560 xfer->c_bio.databuf = va; 1561 #ifndef WD_DUMP_NOT_TRUSTED 1562 switch (err = wd->atabus->ata_bio(wd->drvp, xfer)) { 1563 case ATACMD_TRY_AGAIN: 1564 panic("wddump: try again"); 1565 break; 1566 case ATACMD_QUEUED: 1567 panic("wddump: polled command has been queued"); 1568 break; 1569 case ATACMD_COMPLETE: 1570 break; 1571 default: 1572 panic("wddump: unknown atacmd code %d", err); 1573 } 1574 switch(err = xfer->c_bio.error) { 1575 case TIMEOUT: 1576 printf("wddump: device timed out"); 1577 err = EIO; 1578 break; 1579 case ERR_DF: 1580 printf("wddump: drive fault"); 1581 err = EIO; 1582 break; 1583 case ERR_DMA: 1584 printf("wddump: DMA error"); 1585 err = EIO; 1586 break; 1587 case ERROR: 1588 printf("wddump: "); 1589 wdperror(wd, xfer); 1590 err = EIO; 1591 break; 1592 case NOERROR: 1593 err = 0; 1594 break; 1595 default: 1596 panic("wddump: unknown error type %x", err); 1597 } 1598 1599 if (err != 0) { 1600 printf("\n"); 1601 return err; 1602 } 1603 #else /* WD_DUMP_NOT_TRUSTED */ 1604 /* Let's just talk about this first... */ 1605 printf("wd%d: dump addr 0x%x, cylin %d, head %d, sector %d\n", 1606 unit, va, cylin, head, sector); 1607 delay(500 * 1000); /* half a second */ 1608 #endif 1609 1610 wddoingadump = 0; 1611 return 0; 1612 } 1613 1614 #ifdef HAS_BAD144_HANDLING 1615 /* 1616 * Internalize the bad sector table. 1617 */ 1618 void 1619 bad144intern(struct wd_softc *wd) 1620 { 1621 struct dk_softc *dksc = &wd->sc_dksc; 1622 struct dkbad *bt = &dksc->sc_dkdev.dk_cpulabel->bad; 1623 struct disklabel *lp = dksc->sc_dkdev.dk_label; 1624 int i = 0; 1625 1626 ATADEBUG_PRINT(("bad144intern\n"), DEBUG_XFERS); 1627 1628 for (; i < NBT_BAD; i++) { 1629 if (bt->bt_bad[i].bt_cyl == 0xffff) 1630 break; 1631 wd->drvp->badsect[i] = 1632 bt->bt_bad[i].bt_cyl * lp->d_secpercyl + 1633 (bt->bt_bad[i].bt_trksec >> 8) * lp->d_nsectors + 1634 (bt->bt_bad[i].bt_trksec & 0xff); 1635 } 1636 for (; i < NBT_BAD+1; i++) 1637 wd->drvp->badsect[i] = -1; 1638 } 1639 #endif 1640 1641 static void 1642 wd_set_geometry(struct wd_softc *wd) 1643 { 1644 struct dk_softc *dksc = &wd->sc_dksc; 1645 struct disk_geom *dg = &dksc->sc_dkdev.dk_geom; 1646 1647 memset(dg, 0, sizeof(*dg)); 1648 1649 dg->dg_secperunit = wd->sc_capacity; 1650 dg->dg_secsize = wd->sc_blksize; 1651 dg->dg_nsectors = wd->sc_params.atap_sectors; 1652 dg->dg_ntracks = wd->sc_params.atap_heads; 1653 if ((wd->sc_flags & WDF_LBA) == 0) 1654 dg->dg_ncylinders = wd->sc_params.atap_cylinders; 1655 1656 disk_set_info(dksc->sc_dev, &dksc->sc_dkdev, wd->sc_typename); 1657 } 1658 1659 int 1660 wd_get_params(struct wd_softc *wd, uint8_t flags, struct ataparams *params) 1661 { 1662 int retry = 0; 1663 1664 again: 1665 switch (wd->atabus->ata_get_params(wd->drvp, flags, params)) { 1666 case CMD_AGAIN: 1667 return 1; 1668 case CMD_ERR: 1669 if (retry == 0) { 1670 retry++; 1671 (*wd->atabus->ata_reset_drive)(wd->drvp, flags, NULL); 1672 goto again; 1673 } 1674 1675 if (wd->drvp->drive_type != ATA_DRIVET_OLD) 1676 return 1; 1677 /* 1678 * We `know' there's a drive here; just assume it's old. 1679 * This geometry is only used to read the MBR and print a 1680 * (false) attach message. 1681 */ 1682 strncpy(params->atap_model, "ST506", 1683 sizeof params->atap_model); 1684 params->atap_config = ATA_CFG_FIXED; 1685 params->atap_cylinders = 1024; 1686 params->atap_heads = 8; 1687 params->atap_sectors = 17; 1688 params->atap_multi = 1; 1689 params->atap_capabilities1 = params->atap_capabilities2 = 0; 1690 wd->drvp->ata_vers = -1; /* Mark it as pre-ATA */ 1691 /* FALLTHROUGH */ 1692 case CMD_OK: 1693 return 0; 1694 default: 1695 panic("wd_get_params: bad return code from ata_get_params"); 1696 /* NOTREACHED */ 1697 } 1698 } 1699 1700 int 1701 wd_getcache(struct wd_softc *wd, int *bitsp) 1702 { 1703 struct ataparams params; 1704 1705 if (wd_get_params(wd, AT_WAIT, ¶ms) != 0) 1706 return EIO; 1707 if (params.atap_cmd_set1 == 0x0000 || 1708 params.atap_cmd_set1 == 0xffff || 1709 (params.atap_cmd_set1 & WDC_CMD1_CACHE) == 0) { 1710 *bitsp = 0; 1711 return 0; 1712 } 1713 *bitsp = DKCACHE_WCHANGE | DKCACHE_READ; 1714 if (params.atap_cmd1_en & WDC_CMD1_CACHE) 1715 *bitsp |= DKCACHE_WRITE; 1716 1717 if (WD_USE_NCQ(wd) || (wd->drvp->drive_flags & ATA_DRIVE_WFUA)) 1718 *bitsp |= DKCACHE_FUA; 1719 1720 return 0; 1721 } 1722 1723 const char at_errbits[] = "\20\10ERROR\11TIMEOU\12DF"; 1724 1725 int 1726 wd_setcache(struct wd_softc *wd, int bits) 1727 { 1728 struct dk_softc *dksc = &wd->sc_dksc; 1729 struct ataparams params; 1730 struct ata_xfer *xfer; 1731 int error; 1732 1733 if (wd_get_params(wd, AT_WAIT, ¶ms) != 0) 1734 return EIO; 1735 1736 if (params.atap_cmd_set1 == 0x0000 || 1737 params.atap_cmd_set1 == 0xffff || 1738 (params.atap_cmd_set1 & WDC_CMD1_CACHE) == 0) 1739 return EOPNOTSUPP; 1740 1741 if ((bits & DKCACHE_READ) == 0 || 1742 (bits & DKCACHE_SAVE) != 0) 1743 return EOPNOTSUPP; 1744 1745 xfer = ata_get_xfer(wd->drvp->chnl_softc, true); 1746 1747 xfer->c_ata_c.r_command = SET_FEATURES; 1748 xfer->c_ata_c.r_st_bmask = 0; 1749 xfer->c_ata_c.r_st_pmask = 0; 1750 xfer->c_ata_c.timeout = 30000; /* 30s timeout */ 1751 xfer->c_ata_c.flags = AT_WAIT; 1752 if (bits & DKCACHE_WRITE) 1753 xfer->c_ata_c.r_features = WDSF_WRITE_CACHE_EN; 1754 else 1755 xfer->c_ata_c.r_features = WDSF_WRITE_CACHE_DS; 1756 if (wd->atabus->ata_exec_command(wd->drvp, xfer) != ATACMD_COMPLETE) { 1757 aprint_error_dev(dksc->sc_dev, 1758 "wd_setcache command not complete\n"); 1759 error = EIO; 1760 goto out; 1761 } 1762 1763 if (xfer->c_ata_c.flags & (AT_ERROR | AT_TIMEOU | AT_DF)) { 1764 char sbuf[sizeof(at_errbits) + 64]; 1765 snprintb(sbuf, sizeof(sbuf), at_errbits, xfer->c_ata_c.flags); 1766 aprint_error_dev(dksc->sc_dev, "wd_setcache: status=%s\n", sbuf); 1767 error = EIO; 1768 goto out; 1769 } 1770 1771 error = 0; 1772 1773 out: 1774 ata_free_xfer(wd->drvp->chnl_softc, xfer); 1775 return error; 1776 } 1777 1778 static int 1779 wd_standby(struct wd_softc *wd, int flags) 1780 { 1781 struct dk_softc *dksc = &wd->sc_dksc; 1782 struct ata_xfer *xfer; 1783 int error; 1784 1785 aprint_debug_dev(dksc->sc_dev, "standby immediate\n"); 1786 xfer = ata_get_xfer(wd->drvp->chnl_softc, true); 1787 1788 xfer->c_ata_c.r_command = WDCC_STANDBY_IMMED; 1789 xfer->c_ata_c.r_st_bmask = WDCS_DRDY; 1790 xfer->c_ata_c.r_st_pmask = WDCS_DRDY; 1791 xfer->c_ata_c.flags = flags; 1792 xfer->c_ata_c.timeout = 30000; /* 30s timeout */ 1793 if (wd->atabus->ata_exec_command(wd->drvp, xfer) != ATACMD_COMPLETE) { 1794 aprint_error_dev(dksc->sc_dev, 1795 "standby immediate command didn't complete\n"); 1796 error = EIO; 1797 goto out; 1798 } 1799 if (xfer->c_ata_c.flags & AT_ERROR) { 1800 if (xfer->c_ata_c.r_error == WDCE_ABRT) { 1801 /* command not supported */ 1802 aprint_debug_dev(dksc->sc_dev, 1803 "standby immediate not supported\n"); 1804 error = ENODEV; 1805 goto out; 1806 } 1807 } 1808 if (xfer->c_ata_c.flags & (AT_ERROR | AT_TIMEOU | AT_DF)) { 1809 char sbuf[sizeof(at_errbits) + 64]; 1810 snprintb(sbuf, sizeof(sbuf), at_errbits, xfer->c_ata_c.flags); 1811 aprint_error_dev(dksc->sc_dev, "wd_standby: status=%s\n", sbuf); 1812 error = EIO; 1813 goto out; 1814 } 1815 error = 0; 1816 1817 out: 1818 ata_free_xfer(wd->drvp->chnl_softc, xfer); 1819 return error; 1820 } 1821 1822 int 1823 wd_flushcache(struct wd_softc *wd, int flags, bool start_self) 1824 { 1825 struct dk_softc *dksc = &wd->sc_dksc; 1826 struct ata_xfer *xfer; 1827 int error; 1828 1829 /* 1830 * WDCC_FLUSHCACHE is here since ATA-4, but some drives report 1831 * only ATA-2 and still support it. 1832 */ 1833 if (wd->drvp->ata_vers < 4 && 1834 ((wd->sc_params.atap_cmd_set2 & WDC_CMD2_FC) == 0 || 1835 wd->sc_params.atap_cmd_set2 == 0xffff)) 1836 return ENODEV; 1837 1838 xfer = ata_get_xfer(wd->drvp->chnl_softc, true); 1839 1840 if ((wd->sc_params.atap_cmd2_en & ATA_CMD2_LBA48) != 0 && 1841 (wd->sc_params.atap_cmd2_en & ATA_CMD2_FCE) != 0) { 1842 xfer->c_ata_c.r_command = WDCC_FLUSHCACHE_EXT; 1843 flags |= AT_LBA48; 1844 } else 1845 xfer->c_ata_c.r_command = WDCC_FLUSHCACHE; 1846 xfer->c_ata_c.r_st_bmask = WDCS_DRDY; 1847 xfer->c_ata_c.r_st_pmask = WDCS_DRDY; 1848 xfer->c_ata_c.flags = flags | AT_READREG; 1849 xfer->c_ata_c.timeout = 300000; /* 5m timeout */ 1850 if (wd->atabus->ata_exec_command(wd->drvp, xfer) != ATACMD_COMPLETE) { 1851 aprint_error_dev(dksc->sc_dev, 1852 "flush cache command didn't complete\n"); 1853 error = EIO; 1854 goto out_xfer; 1855 } 1856 if (xfer->c_ata_c.flags & AT_ERROR) { 1857 if (xfer->c_ata_c.r_error == WDCE_ABRT) { 1858 /* command not supported */ 1859 error = ENODEV; 1860 goto out_xfer; 1861 } 1862 } 1863 if (xfer->c_ata_c.flags & (AT_ERROR | AT_TIMEOU | AT_DF)) { 1864 char sbuf[sizeof(at_errbits) + 64]; 1865 snprintb(sbuf, sizeof(sbuf), at_errbits, xfer->c_ata_c.flags); 1866 aprint_error_dev(dksc->sc_dev, "wd_flushcache: status=%s\n", 1867 sbuf); 1868 error = EIO; 1869 goto out_xfer; 1870 } 1871 wd->sc_flags &= ~WDF_DIRTY; 1872 error = 0; 1873 1874 out_xfer: 1875 ata_free_xfer(wd->drvp->chnl_softc, xfer); 1876 return error; 1877 } 1878 1879 /* 1880 * Execute TRIM command, assumes sleep context. 1881 */ 1882 static int 1883 wd_trim(struct wd_softc *wd, daddr_t bno, long size) 1884 { 1885 struct dk_softc *dksc = &wd->sc_dksc; 1886 struct ata_xfer *xfer; 1887 int error; 1888 unsigned char *req; 1889 1890 xfer = ata_get_xfer(wd->drvp->chnl_softc, true); 1891 1892 req = kmem_zalloc(512, KM_SLEEP); 1893 req[0] = bno & 0xff; 1894 req[1] = (bno >> 8) & 0xff; 1895 req[2] = (bno >> 16) & 0xff; 1896 req[3] = (bno >> 24) & 0xff; 1897 req[4] = (bno >> 32) & 0xff; 1898 req[5] = (bno >> 40) & 0xff; 1899 req[6] = size & 0xff; 1900 req[7] = (size >> 8) & 0xff; 1901 1902 /* 1903 * XXX We could possibly use NCQ TRIM, which supports executing 1904 * this command concurrently. It would need some investigation, some 1905 * early or not so early disk firmware caused data loss with NCQ TRIM. 1906 * atastart() et.al would need to be adjusted to allow and support 1907 * running several non-I/O ATA commands in parallel. 1908 */ 1909 1910 xfer->c_ata_c.r_command = ATA_DATA_SET_MANAGEMENT; 1911 xfer->c_ata_c.r_count = 1; 1912 xfer->c_ata_c.r_features = ATA_SUPPORT_DSM_TRIM; 1913 xfer->c_ata_c.r_st_bmask = WDCS_DRDY; 1914 xfer->c_ata_c.r_st_pmask = WDCS_DRDY; 1915 xfer->c_ata_c.timeout = 30000; /* 30s timeout */ 1916 xfer->c_ata_c.data = req; 1917 xfer->c_ata_c.bcount = 512; 1918 xfer->c_ata_c.flags |= AT_WRITE | AT_WAIT; 1919 if (wd->atabus->ata_exec_command(wd->drvp, xfer) != ATACMD_COMPLETE) { 1920 aprint_error_dev(dksc->sc_dev, 1921 "trim command didn't complete\n"); 1922 kmem_free(req, 512); 1923 error = EIO; 1924 goto out; 1925 } 1926 kmem_free(req, 512); 1927 if (xfer->c_ata_c.flags & AT_ERROR) { 1928 if (xfer->c_ata_c.r_error == WDCE_ABRT) { 1929 /* command not supported */ 1930 error = ENODEV; 1931 goto out; 1932 } 1933 } 1934 if (xfer->c_ata_c.flags & (AT_ERROR | AT_TIMEOU | AT_DF)) { 1935 char sbuf[sizeof(at_errbits) + 64]; 1936 snprintb(sbuf, sizeof(sbuf), at_errbits, xfer->c_ata_c.flags); 1937 aprint_error_dev(dksc->sc_dev, "wd_trim: status=%s\n", 1938 sbuf); 1939 error = EIO; 1940 goto out; 1941 } 1942 error = 0; 1943 1944 out: 1945 ata_free_xfer(wd->drvp->chnl_softc, xfer); 1946 return error; 1947 } 1948 1949 bool 1950 wd_shutdown(device_t dev, int how) 1951 { 1952 struct wd_softc *wd = device_private(dev); 1953 1954 /* the adapter needs to be enabled */ 1955 if (wd->atabus->ata_addref(wd->drvp)) 1956 return true; /* no need to complain */ 1957 1958 wd_flushcache(wd, AT_POLL, false); 1959 if ((how & RB_POWERDOWN) == RB_POWERDOWN) 1960 wd_standby(wd, AT_POLL); 1961 return true; 1962 } 1963 1964 /* 1965 * Allocate space for a ioctl queue structure. Mostly taken from 1966 * scsipi_ioctl.c 1967 */ 1968 struct wd_ioctl * 1969 wi_get(struct wd_softc *wd) 1970 { 1971 struct wd_ioctl *wi; 1972 1973 wi = kmem_zalloc(sizeof(struct wd_ioctl), KM_SLEEP); 1974 wi->wi_softc = wd; 1975 buf_init(&wi->wi_bp); 1976 1977 return (wi); 1978 } 1979 1980 /* 1981 * Free an ioctl structure and remove it from our list 1982 */ 1983 1984 void 1985 wi_free(struct wd_ioctl *wi) 1986 { 1987 buf_destroy(&wi->wi_bp); 1988 kmem_free(wi, sizeof(*wi)); 1989 } 1990 1991 /* 1992 * Find a wd_ioctl structure based on the struct buf. 1993 */ 1994 1995 struct wd_ioctl * 1996 wi_find(struct buf *bp) 1997 { 1998 return container_of(bp, struct wd_ioctl, wi_bp); 1999 } 2000 2001 static uint 2002 wi_sector_size(const struct wd_ioctl * const wi) 2003 { 2004 switch (wi->wi_atareq.command) { 2005 case WDCC_READ: 2006 case WDCC_WRITE: 2007 case WDCC_READMULTI: 2008 case WDCC_WRITEMULTI: 2009 case WDCC_READDMA: 2010 case WDCC_WRITEDMA: 2011 case WDCC_READ_EXT: 2012 case WDCC_WRITE_EXT: 2013 case WDCC_READMULTI_EXT: 2014 case WDCC_WRITEMULTI_EXT: 2015 case WDCC_READDMA_EXT: 2016 case WDCC_WRITEDMA_EXT: 2017 case WDCC_READ_FPDMA_QUEUED: 2018 case WDCC_WRITE_FPDMA_QUEUED: 2019 return wi->wi_softc->sc_blksize; 2020 default: 2021 return 512; 2022 } 2023 } 2024 2025 /* 2026 * Ioctl pseudo strategy routine 2027 * 2028 * This is mostly stolen from scsipi_ioctl.c:scsistrategy(). What 2029 * happens here is: 2030 * 2031 * - wdioctl() queues a wd_ioctl structure. 2032 * 2033 * - wdioctl() calls physio/wdioctlstrategy based on whether or not 2034 * user space I/O is required. If physio() is called, physio() eventually 2035 * calls wdioctlstrategy(). 2036 * 2037 * - In either case, wdioctlstrategy() calls wd->atabus->ata_exec_command() 2038 * to perform the actual command 2039 * 2040 * The reason for the use of the pseudo strategy routine is because 2041 * when doing I/O to/from user space, physio _really_ wants to be in 2042 * the loop. We could put the entire buffer into the ioctl request 2043 * structure, but that won't scale if we want to do things like download 2044 * microcode. 2045 */ 2046 2047 void 2048 wdioctlstrategy(struct buf *bp) 2049 { 2050 struct wd_ioctl *wi; 2051 struct ata_xfer *xfer; 2052 int error = 0; 2053 2054 wi = wi_find(bp); 2055 if (wi == NULL) { 2056 printf("wdioctlstrategy: " 2057 "No matching ioctl request found in queue\n"); 2058 error = EINVAL; 2059 goto out2; 2060 } 2061 2062 xfer = ata_get_xfer(wi->wi_softc->drvp->chnl_softc, true); 2063 2064 /* 2065 * Abort if physio broke up the transfer 2066 */ 2067 2068 if (bp->b_bcount != wi->wi_atareq.datalen) { 2069 printf("physio split wd ioctl request... cannot proceed\n"); 2070 error = EIO; 2071 goto out; 2072 } 2073 2074 /* 2075 * Abort if we didn't get a buffer size that was a multiple of 2076 * our sector size (or overflows CHS/LBA28 sector count) 2077 */ 2078 2079 if ((bp->b_bcount % wi_sector_size(wi)) != 0 || 2080 (bp->b_bcount / wi_sector_size(wi)) >= 2081 (1 << NBBY)) { 2082 error = EINVAL; 2083 goto out; 2084 } 2085 2086 /* 2087 * Make sure a timeout was supplied in the ioctl request 2088 */ 2089 2090 if (wi->wi_atareq.timeout == 0) { 2091 error = EINVAL; 2092 goto out; 2093 } 2094 2095 if (wi->wi_atareq.flags & ATACMD_READ) 2096 xfer->c_ata_c.flags |= AT_READ; 2097 else if (wi->wi_atareq.flags & ATACMD_WRITE) 2098 xfer->c_ata_c.flags |= AT_WRITE; 2099 2100 if (wi->wi_atareq.flags & ATACMD_READREG) 2101 xfer->c_ata_c.flags |= AT_READREG; 2102 2103 if ((wi->wi_atareq.flags & ATACMD_LBA) != 0) 2104 xfer->c_ata_c.flags |= AT_LBA; 2105 2106 xfer->c_ata_c.flags |= AT_WAIT; 2107 2108 xfer->c_ata_c.timeout = wi->wi_atareq.timeout; 2109 xfer->c_ata_c.r_command = wi->wi_atareq.command; 2110 xfer->c_ata_c.r_lba = ((wi->wi_atareq.head & 0x0f) << 24) | 2111 (wi->wi_atareq.cylinder << 8) | 2112 wi->wi_atareq.sec_num; 2113 xfer->c_ata_c.r_count = wi->wi_atareq.sec_count; 2114 xfer->c_ata_c.r_features = wi->wi_atareq.features; 2115 xfer->c_ata_c.r_st_bmask = WDCS_DRDY; 2116 xfer->c_ata_c.r_st_pmask = WDCS_DRDY; 2117 xfer->c_ata_c.data = wi->wi_bp.b_data; 2118 xfer->c_ata_c.bcount = wi->wi_bp.b_bcount; 2119 2120 if (wi->wi_softc->atabus->ata_exec_command(wi->wi_softc->drvp, xfer) 2121 != ATACMD_COMPLETE) { 2122 wi->wi_atareq.retsts = ATACMD_ERROR; 2123 error = EIO; 2124 goto out; 2125 } 2126 2127 if (xfer->c_ata_c.flags & (AT_ERROR | AT_TIMEOU | AT_DF)) { 2128 if (xfer->c_ata_c.flags & AT_ERROR) { 2129 wi->wi_atareq.retsts = ATACMD_ERROR; 2130 wi->wi_atareq.error = xfer->c_ata_c.r_error; 2131 } else if (xfer->c_ata_c.flags & AT_DF) 2132 wi->wi_atareq.retsts = ATACMD_DF; 2133 else 2134 wi->wi_atareq.retsts = ATACMD_TIMEOUT; 2135 } else { 2136 wi->wi_atareq.retsts = ATACMD_OK; 2137 if (wi->wi_atareq.flags & ATACMD_READREG) { 2138 wi->wi_atareq.command = xfer->c_ata_c.r_status; 2139 wi->wi_atareq.features = xfer->c_ata_c.r_error; 2140 wi->wi_atareq.sec_count = xfer->c_ata_c.r_count; 2141 wi->wi_atareq.sec_num = xfer->c_ata_c.r_lba & 0xff; 2142 wi->wi_atareq.head = (xfer->c_ata_c.r_device & 0xf0) | 2143 ((xfer->c_ata_c.r_lba >> 24) & 0x0f); 2144 wi->wi_atareq.cylinder = 2145 (xfer->c_ata_c.r_lba >> 8) & 0xffff; 2146 wi->wi_atareq.error = xfer->c_ata_c.r_error; 2147 } 2148 } 2149 2150 out: 2151 ata_free_xfer(wi->wi_softc->drvp->chnl_softc, xfer); 2152 out2: 2153 bp->b_error = error; 2154 if (error) 2155 bp->b_resid = bp->b_bcount; 2156 biodone(bp); 2157 } 2158 2159 static void 2160 wd_sysctl_attach(struct wd_softc *wd) 2161 { 2162 struct dk_softc *dksc = &wd->sc_dksc; 2163 const struct sysctlnode *node; 2164 int error; 2165 2166 /* sysctl set-up */ 2167 if (sysctl_createv(&wd->nodelog, 0, NULL, &node, 2168 0, CTLTYPE_NODE, dksc->sc_xname, 2169 SYSCTL_DESCR("wd driver settings"), 2170 NULL, 0, NULL, 0, 2171 CTL_HW, CTL_CREATE, CTL_EOL) != 0) { 2172 aprint_error_dev(dksc->sc_dev, 2173 "could not create %s.%s sysctl node\n", 2174 "hw", dksc->sc_xname); 2175 return; 2176 } 2177 2178 wd->drv_ncq = true; 2179 if ((error = sysctl_createv(&wd->nodelog, 0, NULL, NULL, 2180 CTLFLAG_READWRITE, CTLTYPE_BOOL, "use_ncq", 2181 SYSCTL_DESCR("use NCQ if supported"), 2182 NULL, 0, &wd->drv_ncq, 0, 2183 CTL_HW, node->sysctl_num, CTL_CREATE, CTL_EOL)) 2184 != 0) { 2185 aprint_error_dev(dksc->sc_dev, 2186 "could not create %s.%s.use_ncq sysctl - error %d\n", 2187 "hw", dksc->sc_xname, error); 2188 return; 2189 } 2190 2191 wd->drv_ncq_prio = false; 2192 if ((error = sysctl_createv(&wd->nodelog, 0, NULL, NULL, 2193 CTLFLAG_READWRITE, CTLTYPE_BOOL, "use_ncq_prio", 2194 SYSCTL_DESCR("use NCQ PRIORITY if supported"), 2195 NULL, 0, &wd->drv_ncq_prio, 0, 2196 CTL_HW, node->sysctl_num, CTL_CREATE, CTL_EOL)) 2197 != 0) { 2198 aprint_error_dev(dksc->sc_dev, 2199 "could not create %s.%s.use_ncq_prio sysctl - error %d\n", 2200 "hw", dksc->sc_xname, error); 2201 return; 2202 } 2203 2204 #ifdef WD_CHAOS_MONKEY 2205 wd->drv_chaos_freq = 0; 2206 if ((error = sysctl_createv(&wd->nodelog, 0, NULL, NULL, 2207 CTLFLAG_READWRITE, CTLTYPE_INT, "chaos_freq", 2208 SYSCTL_DESCR("simulated bio read error rate"), 2209 NULL, 0, &wd->drv_chaos_freq, 0, 2210 CTL_HW, node->sysctl_num, CTL_CREATE, CTL_EOL)) 2211 != 0) { 2212 aprint_error_dev(dksc->sc_dev, 2213 "could not create %s.%s.chaos_freq sysctl - error %d\n", 2214 "hw", dksc->sc_xname, error); 2215 return; 2216 } 2217 2218 wd->drv_chaos_cnt = 0; 2219 if ((error = sysctl_createv(&wd->nodelog, 0, NULL, NULL, 2220 CTLFLAG_READONLY, CTLTYPE_INT, "chaos_cnt", 2221 SYSCTL_DESCR("number of processed bio reads"), 2222 NULL, 0, &wd->drv_chaos_cnt, 0, 2223 CTL_HW, node->sysctl_num, CTL_CREATE, CTL_EOL)) 2224 != 0) { 2225 aprint_error_dev(dksc->sc_dev, 2226 "could not create %s.%s.chaos_cnt sysctl - error %d\n", 2227 "hw", dksc->sc_xname, error); 2228 return; 2229 } 2230 #endif 2231 2232 } 2233 2234 static void 2235 wd_sysctl_detach(struct wd_softc *wd) 2236 { 2237 sysctl_teardown(&wd->nodelog); 2238 } 2239 2240 #ifdef ATADEBUG 2241 int wddebug(void); 2242 2243 int 2244 wddebug(void) 2245 { 2246 struct wd_softc *wd; 2247 struct dk_softc *dksc; 2248 int unit; 2249 2250 for (unit = 0; unit <= 3; unit++) { 2251 wd = device_lookup_private(&wd_cd, unit); 2252 if (wd == NULL) 2253 continue; 2254 dksc = &wd->sc_dksc; 2255 printf("%s fl %x bufq %p:\n", 2256 dksc->sc_xname, wd->sc_flags, bufq_peek(dksc->sc_bufq)); 2257 2258 atachannel_debug(wd->drvp->chnl_softc); 2259 } 2260 return 0; 2261 } 2262 #endif /* ATADEBUG */ 2263
Indexes created Fri Sep 26 08:10:20 GMT 2025