wd.c revision 1.441.2.6
1 /* $NetBSD: wd.c,v 1.441.2.6 2018/09/22 17:50:09 jdolecek 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 1.441.2.6 2018/09/22 17:50:09 jdolecek 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->drvp = adev->adev_drv_data; 325 326 wd->drvp->drv_openings = 1; 327 wd->drvp->drv_done = wddone; 328 wd->drvp->drv_softc = dksc->sc_dev; /* done in atabusconfig_thread() 329 but too late */ 330 331 SLIST_INIT(&wd->sc_retry_list); 332 SLIST_INIT(&wd->sc_requeue_list); 333 callout_init(&wd->sc_retry_callout, 0); /* XXX MPSAFE */ 334 callout_init(&wd->sc_requeue_callout, 0); /* XXX MPSAFE */ 335 callout_init(&wd->sc_restart_diskqueue, 0); /* XXX MPSAFE */ 336 337 aprint_naive("\n"); 338 aprint_normal("\n"); 339 340 /* read our drive info */ 341 if (wd_get_params(wd, AT_WAIT, &wd->sc_params) != 0) { 342 aprint_error_dev(self, "IDENTIFY failed\n"); 343 goto out; 344 } 345 346 for (blank = 0, p = wd->sc_params.atap_model, q = tbuf, i = 0; 347 i < sizeof(wd->sc_params.atap_model); i++) { 348 c = *p++; 349 if (c == '\0') 350 break; 351 if (c != ' ') { 352 if (blank) { 353 *q++ = ' '; 354 blank = 0; 355 } 356 *q++ = c; 357 } else 358 blank = 1; 359 } 360 *q++ = '\0'; 361 362 aprint_normal_dev(self, "<%s>\n", tbuf); 363 364 wdq = wd_lookup_quirks(tbuf); 365 if (wdq != NULL) 366 wd->sc_quirks = wdq->wdq_quirks; 367 368 if (wd->sc_quirks != 0) { 369 char sbuf[sizeof(WD_QUIRK_FMT) + 64]; 370 snprintb(sbuf, sizeof(sbuf), WD_QUIRK_FMT, wd->sc_quirks); 371 aprint_normal_dev(self, "quirks %s\n", sbuf); 372 373 if (wd->sc_quirks & WD_QUIRK_SPLIT_MOD15_WRITE) { 374 aprint_error_dev(self, "drive corrupts write transfers with certain controllers, consider replacing\n"); 375 } 376 } 377 378 if ((wd->sc_params.atap_multi & 0xff) > 1) { 379 wd->drvp->multi = wd->sc_params.atap_multi & 0xff; 380 } else { 381 wd->drvp->multi = 1; 382 } 383 384 aprint_verbose_dev(self, "drive supports %d-sector PIO transfers,", 385 wd->drvp->multi); 386 387 /* 48-bit LBA addressing */ 388 if ((wd->sc_params.atap_cmd2_en & ATA_CMD2_LBA48) != 0) 389 wd->sc_flags |= WDF_LBA48; 390 391 /* Prior to ATA-4, LBA was optional. */ 392 if ((wd->sc_params.atap_capabilities1 & WDC_CAP_LBA) != 0) 393 wd->sc_flags |= WDF_LBA; 394 #if 0 395 /* ATA-4 requires LBA. */ 396 if (wd->sc_params.atap_ataversion != 0xffff && 397 wd->sc_params.atap_ataversion >= WDC_VER_ATA4) 398 wd->sc_flags |= WDF_LBA; 399 #endif 400 401 if ((wd->sc_flags & WDF_LBA48) != 0) { 402 aprint_verbose(" LBA48 addressing\n"); 403 wd->sc_capacity = 404 ((uint64_t) wd->sc_params.atap_max_lba[3] << 48) | 405 ((uint64_t) wd->sc_params.atap_max_lba[2] << 32) | 406 ((uint64_t) wd->sc_params.atap_max_lba[1] << 16) | 407 ((uint64_t) wd->sc_params.atap_max_lba[0] << 0); 408 wd->sc_capacity28 = 409 (wd->sc_params.atap_capacity[1] << 16) | 410 wd->sc_params.atap_capacity[0]; 411 } else if ((wd->sc_flags & WDF_LBA) != 0) { 412 aprint_verbose(" LBA addressing\n"); 413 wd->sc_capacity28 = wd->sc_capacity = 414 (wd->sc_params.atap_capacity[1] << 16) | 415 wd->sc_params.atap_capacity[0]; 416 } else { 417 aprint_verbose(" chs addressing\n"); 418 wd->sc_capacity28 = wd->sc_capacity = 419 wd->sc_params.atap_cylinders * 420 wd->sc_params.atap_heads * 421 wd->sc_params.atap_sectors; 422 } 423 if ((wd->sc_params.atap_secsz & ATA_SECSZ_VALID_MASK) == ATA_SECSZ_VALID 424 && ((wd->sc_params.atap_secsz & ATA_SECSZ_LLS) != 0)) { 425 wd->sc_blksize = 2ULL * 426 ((uint32_t)((wd->sc_params.atap_lls_secsz[1] << 16) | 427 wd->sc_params.atap_lls_secsz[0])); 428 } else { 429 wd->sc_blksize = 512; 430 } 431 wd->sc_capacity512 = (wd->sc_capacity * wd->sc_blksize) / DEV_BSIZE; 432 format_bytes(pbuf, sizeof(pbuf), wd->sc_capacity * wd->sc_blksize); 433 aprint_normal_dev(self, "%s, %d cyl, %d head, %d sec, " 434 "%d bytes/sect x %llu sectors\n", 435 pbuf, 436 (wd->sc_flags & WDF_LBA) ? (int)(wd->sc_capacity / 437 (wd->sc_params.atap_heads * wd->sc_params.atap_sectors)) : 438 wd->sc_params.atap_cylinders, 439 wd->sc_params.atap_heads, wd->sc_params.atap_sectors, 440 wd->sc_blksize, (unsigned long long)wd->sc_capacity); 441 442 ATADEBUG_PRINT(("%s: atap_dmatiming_mimi=%d, atap_dmatiming_recom=%d\n", 443 device_xname(self), wd->sc_params.atap_dmatiming_mimi, 444 wd->sc_params.atap_dmatiming_recom), DEBUG_PROBE); 445 446 if (wd->sc_blksize <= 0 || !powerof2(wd->sc_blksize) || 447 wd->sc_blksize < DEV_BSIZE || wd->sc_blksize > MAXPHYS) { 448 aprint_normal_dev(self, "WARNING: block size %u " 449 "might not actually work\n", wd->sc_blksize); 450 } 451 452 if (strcmp(wd->sc_params.atap_model, "ST506") == 0) 453 dtype = DKTYPE_ST506; 454 else 455 dtype = DKTYPE_ESDI; 456 457 out: 458 /* 459 * Initialize and attach the disk structure. 460 */ 461 dk_init(dksc, self, dtype); 462 disk_init(&dksc->sc_dkdev, dksc->sc_xname, &wddkdriver); 463 464 /* Attach dk and disk subsystems */ 465 dk_attach(dksc); 466 disk_attach(&dksc->sc_dkdev); 467 wd_set_geometry(wd); 468 469 bufq_alloc(&dksc->sc_bufq, BUFQ_DISK_DEFAULT_STRAT, BUFQ_SORT_RAWBLOCK); 470 471 /* reference to label structure, used by ata code */ 472 wd->drvp->lp = dksc->sc_dkdev.dk_label; 473 474 /* Discover wedges on this disk. */ 475 dkwedge_discover(&dksc->sc_dkdev); 476 477 if (!pmf_device_register1(self, wd_suspend, NULL, wd_shutdown)) 478 aprint_error_dev(self, "couldn't establish power handler\n"); 479 480 wd_sysctl_attach(wd); 481 } 482 483 static bool 484 wd_suspend(device_t dv, const pmf_qual_t *qual) 485 { 486 struct wd_softc *sc = device_private(dv); 487 488 /* the adapter needs to be enabled */ 489 if (sc->atabus->ata_addref(sc->drvp)) 490 return true; /* no need to complain */ 491 492 wd_flushcache(sc, AT_WAIT, false); 493 wd_standby(sc, AT_WAIT); 494 495 sc->atabus->ata_delref(sc->drvp); 496 return true; 497 } 498 499 static int 500 wddetach(device_t self, int flags) 501 { 502 struct wd_softc *wd = device_private(self); 503 struct dk_softc *dksc = &wd->sc_dksc; 504 int bmaj, cmaj, i, mn, rc; 505 506 if ((rc = disk_begindetach(&dksc->sc_dkdev, wd_lastclose, self, flags)) != 0) 507 return rc; 508 509 /* locate the major number */ 510 bmaj = bdevsw_lookup_major(&wd_bdevsw); 511 cmaj = cdevsw_lookup_major(&wd_cdevsw); 512 513 /* Nuke the vnodes for any open instances. */ 514 for (i = 0; i < MAXPARTITIONS; i++) { 515 mn = WDMINOR(device_unit(self), i); 516 vdevgone(bmaj, mn, mn, VBLK); 517 vdevgone(cmaj, mn, mn, VCHR); 518 } 519 520 dk_drain(dksc); 521 522 /* Kill off any pending commands. */ 523 mutex_enter(&wd->sc_lock); 524 wd->atabus->ata_killpending(wd->drvp); 525 526 callout_halt(&wd->sc_retry_callout, &wd->sc_lock); 527 callout_destroy(&wd->sc_retry_callout); 528 callout_halt(&wd->sc_requeue_callout, &wd->sc_lock); 529 callout_destroy(&wd->sc_requeue_callout); 530 callout_halt(&wd->sc_restart_diskqueue, &wd->sc_lock); 531 callout_destroy(&wd->sc_restart_diskqueue); 532 533 mutex_exit(&wd->sc_lock); 534 535 bufq_free(dksc->sc_bufq); 536 537 if (flags & DETACH_POWEROFF) 538 wd_standby(wd, AT_POLL); 539 540 /* Delete all of our wedges. */ 541 dkwedge_delall(&dksc->sc_dkdev); 542 543 /* Detach from the disk list. */ 544 disk_detach(&dksc->sc_dkdev); 545 disk_destroy(&dksc->sc_dkdev); 546 547 dk_detach(dksc); 548 549 #ifdef WD_SOFTBADSECT 550 /* Clean out the bad sector list */ 551 while (!SLIST_EMPTY(&wd->sc_bslist)) { 552 struct disk_badsectors *dbs = SLIST_FIRST(&wd->sc_bslist); 553 SLIST_REMOVE_HEAD(&wd->sc_bslist, dbs_next); 554 kmem_free(dbs, sizeof(*dbs)); 555 } 556 wd->sc_bscount = 0; 557 #endif 558 559 pmf_device_deregister(self); 560 561 wd_sysctl_detach(wd); 562 563 mutex_destroy(&wd->sc_lock); 564 565 wd->drvp->drive_type = ATA_DRIVET_NONE; /* no drive any more here */ 566 wd->drvp->drive_flags = 0; 567 568 return (0); 569 } 570 571 /* 572 * Read/write routine for a buffer. Validates the arguments and schedules the 573 * transfer. Does not wait for the transfer to complete. 574 */ 575 static void 576 wdstrategy(struct buf *bp) 577 { 578 struct wd_softc *wd = 579 device_lookup_private(&wd_cd, WDUNIT(bp->b_dev)); 580 struct dk_softc *dksc = &wd->sc_dksc; 581 582 ATADEBUG_PRINT(("wdstrategy (%s)\n", dksc->sc_xname), 583 DEBUG_XFERS); 584 585 /* If device invalidated (e.g. media change, door open, 586 * device detachment), then error. 587 */ 588 if ((wd->sc_flags & WDF_LOADED) == 0 || 589 !device_is_enabled(dksc->sc_dev)) 590 goto err; 591 592 #ifdef WD_SOFTBADSECT 593 /* 594 * If the transfer about to be attempted contains only a block that 595 * is known to be bad then return an error for the transfer without 596 * even attempting to start a transfer up under the premis that we 597 * will just end up doing more retries for a transfer that will end 598 * up failing again. 599 */ 600 if (__predict_false(!SLIST_EMPTY(&wd->sc_bslist))) { 601 struct disklabel *lp = dksc->sc_dkdev.dk_label; 602 struct disk_badsectors *dbs; 603 daddr_t blkno, maxblk; 604 605 /* convert the block number to absolute */ 606 if (lp->d_secsize >= DEV_BSIZE) 607 blkno = bp->b_blkno / (lp->d_secsize / DEV_BSIZE); 608 else 609 blkno = bp->b_blkno * (DEV_BSIZE / lp->d_secsize); 610 if (WDPART(bp->b_dev) != RAW_PART) 611 blkno += lp->d_partitions[WDPART(bp->b_dev)].p_offset; 612 maxblk = blkno + (bp->b_bcount / wd->sc_blksize) - 1; 613 614 mutex_enter(&wd->sc_lock); 615 SLIST_FOREACH(dbs, &wd->sc_bslist, dbs_next) 616 if ((dbs->dbs_min <= bp->b_rawblkno && 617 bp->b_rawblkno <= dbs->dbs_max) || 618 (dbs->dbs_min <= maxblk && maxblk <= dbs->dbs_max)){ 619 mutex_exit(&wd->sc_lock); 620 goto err; 621 } 622 mutex_exit(&wd->sc_lock); 623 } 624 #endif 625 626 dk_strategy(dksc, bp); 627 return; 628 629 err: 630 bp->b_error = EIO; 631 bp->b_resid = bp->b_bcount; 632 biodone(bp); 633 } 634 635 static void 636 wdstart1(struct wd_softc *wd, struct buf *bp, struct ata_xfer *xfer) 637 { 638 struct dk_softc *dksc = &wd->sc_dksc; 639 640 KASSERT(bp == xfer->c_bio.bp || xfer->c_bio.bp == NULL); 641 KASSERT((xfer->c_flags & (C_WAITACT|C_FREE)) == 0); 642 643 /* Reset state, so that retries don't use stale info */ 644 if (__predict_false(xfer->c_retries > 0)) { 645 xfer->c_flags = 0; 646 memset(&xfer->c_bio, 0, sizeof(xfer->c_bio)); 647 } 648 649 xfer->c_bio.blkno = bp->b_rawblkno; 650 xfer->c_bio.bcount = bp->b_bcount; 651 xfer->c_bio.databuf = bp->b_data; 652 xfer->c_bio.blkdone = 0; 653 xfer->c_bio.bp = bp; 654 655 #ifdef WD_CHAOS_MONKEY 656 /* 657 * Override blkno to be over device capacity to trigger error, 658 * but only if it's read, to avoid trashing disk contents should 659 * the command be clipped, or otherwise misinterpreted, by the 660 * driver or controller. 661 */ 662 if (BUF_ISREAD(bp) && xfer->c_retries == 0 && wd->drv_chaos_freq > 0 && 663 (++wd->drv_chaos_cnt % wd->drv_chaos_freq) == 0) { 664 aprint_normal_dev(dksc->sc_dev, "%s: chaos xfer %p\n", 665 __func__, xfer); 666 xfer->c_bio.blkno = 7777777 + wd->sc_capacity; 667 xfer->c_flags |= C_CHAOS; 668 } 669 #endif 670 671 /* 672 * If we're retrying, retry in single-sector mode. This will give us 673 * the sector number of the problem, and will eventually allow the 674 * transfer to succeed. If FUA is requested, we can't actually 675 * do this, as ATA_SINGLE is usually executed as PIO transfer by drivers 676 * which support it, and that isn't compatible with NCQ/FUA. 677 */ 678 if (xfer->c_retries >= WDIORETRIES_SINGLE && 679 (bp->b_flags & B_MEDIA_FUA) == 0) 680 xfer->c_bio.flags = ATA_SINGLE; 681 else 682 xfer->c_bio.flags = 0; 683 684 /* 685 * request LBA48 transfers when supported by the controller 686 * and needed by transfer offset or size. 687 */ 688 if (wd->sc_flags & WDF_LBA48 && 689 (((xfer->c_bio.blkno + 690 xfer->c_bio.bcount / dksc->sc_dkdev.dk_geom.dg_secsize) > 691 wd->sc_capacity28) || 692 ((xfer->c_bio.bcount / dksc->sc_dkdev.dk_geom.dg_secsize) > 128))) 693 xfer->c_bio.flags |= ATA_LBA48; 694 695 /* 696 * If NCQ was negotiated, always use it for the first several attempts. 697 * Since device cancels all outstanding requests on error, downgrade 698 * to non-NCQ on retry, so that the retried transfer would not cause 699 * cascade failure for the other transfers if it fails again. 700 * If FUA was requested, we can't downgrade, as that would violate 701 * the semantics - FUA would not be honored. In that case, continue 702 * retrying with NCQ. 703 */ 704 if (WD_USE_NCQ(wd) && (xfer->c_retries < WDIORETRIES_SINGLE || 705 (bp->b_flags & B_MEDIA_FUA) != 0)) { 706 xfer->c_bio.flags |= ATA_LBA48; 707 xfer->c_flags |= C_NCQ; 708 709 if (WD_USE_NCQ_PRIO(wd) && 710 BIO_GETPRIO(bp) == BPRIO_TIMECRITICAL) 711 xfer->c_bio.flags |= ATA_PRIO_HIGH; 712 } 713 714 if (wd->sc_flags & WDF_LBA) 715 xfer->c_bio.flags |= ATA_LBA; 716 if (bp->b_flags & B_READ) 717 xfer->c_bio.flags |= ATA_READ; 718 if (bp->b_flags & B_MEDIA_FUA) { 719 /* If not using NCQ, the command WRITE DMA FUA EXT is LBA48 */ 720 KASSERT((wd->sc_flags & WDF_LBA48) != 0); 721 if ((xfer->c_flags & C_NCQ) == 0) 722 xfer->c_bio.flags |= ATA_LBA48; 723 724 xfer->c_bio.flags |= ATA_FUA; 725 } 726 727 switch (wd->atabus->ata_bio(wd->drvp, xfer)) { 728 case ATACMD_TRY_AGAIN: 729 panic("wdstart1: try again"); 730 break; 731 case ATACMD_QUEUED: 732 case ATACMD_COMPLETE: 733 break; 734 default: 735 panic("wdstart1: bad return code from ata_bio()"); 736 } 737 } 738 739 static int 740 wd_diskstart(device_t dev, struct buf *bp) 741 { 742 struct wd_softc *wd = device_private(dev); 743 #ifdef ATADEBUG 744 struct dk_softc *dksc = &wd->sc_dksc; 745 #endif 746 struct ata_xfer *xfer; 747 748 mutex_enter(&wd->sc_lock); 749 750 xfer = ata_get_xfer(wd->drvp->chnl_softc, false); 751 if (xfer == NULL) { 752 ATADEBUG_PRINT(("wd_diskstart %s no xfer\n", 753 dksc->sc_xname), DEBUG_XFERS); 754 755 /* 756 * No available memory, retry later. This happens very rarely 757 * and only under memory pressure, so wait relatively long 758 * before retry. 759 */ 760 if (!callout_pending(&wd->sc_restart_diskqueue)) { 761 callout_reset(&wd->sc_restart_diskqueue, hz / 2, 762 wdrestart, dev); 763 } 764 765 mutex_exit(&wd->sc_lock); 766 return EAGAIN; 767 } 768 769 wdstart1(wd, bp, xfer); 770 771 mutex_exit(&wd->sc_lock); 772 773 return 0; 774 } 775 776 /* 777 * Queue a drive for I/O. 778 */ 779 static void 780 wdrestart(void *x) 781 { 782 device_t self = x; 783 struct wd_softc *wd = device_private(self); 784 struct dk_softc *dksc = &wd->sc_dksc; 785 786 ATADEBUG_PRINT(("wdstart %s\n", dksc->sc_xname), 787 DEBUG_XFERS); 788 789 if (!device_is_active(dksc->sc_dev)) 790 return; 791 792 dk_start(dksc, NULL); 793 } 794 795 static void 796 wddone(device_t self, struct ata_xfer *xfer) 797 { 798 struct wd_softc *wd = device_private(self); 799 struct dk_softc *dksc = &wd->sc_dksc; 800 const char *errmsg; 801 int do_perror = 0; 802 struct buf *bp; 803 804 ATADEBUG_PRINT(("wddone %s\n", dksc->sc_xname), 805 DEBUG_XFERS); 806 807 if (__predict_false(wddoingadump)) { 808 /* just drop it to the floor */ 809 ata_free_xfer(wd->drvp->chnl_softc, xfer); 810 return; 811 } 812 813 bp = xfer->c_bio.bp; 814 KASSERT(bp != NULL); 815 816 bp->b_resid = xfer->c_bio.bcount; 817 switch (xfer->c_bio.error) { 818 case ERR_DMA: 819 errmsg = "DMA error"; 820 goto retry; 821 case ERR_DF: 822 errmsg = "device fault"; 823 goto retry; 824 case TIMEOUT: 825 errmsg = "device timeout"; 826 goto retry; 827 case REQUEUE: 828 errmsg = "requeue"; 829 goto retry2; 830 case ERR_RESET: 831 errmsg = "channel reset"; 832 goto retry2; 833 case ERROR: 834 /* Don't care about media change bits */ 835 if (xfer->c_bio.r_error != 0 && 836 (xfer->c_bio.r_error & ~(WDCE_MC | WDCE_MCR)) == 0) 837 goto noerror; 838 errmsg = "error"; 839 do_perror = 1; 840 retry: /* Just reset and retry. Can we do more ? */ 841 if ((xfer->c_flags & C_RECOVERED) == 0) { 842 int wflags = (xfer->c_flags & C_POLL) ? AT_POLL : 0; 843 (*wd->atabus->ata_reset_drive)(wd->drvp, wflags, NULL); 844 } 845 retry2: 846 mutex_enter(&wd->sc_lock); 847 848 diskerr(bp, "wd", errmsg, LOG_PRINTF, 849 xfer->c_bio.blkdone, dksc->sc_dkdev.dk_label); 850 if (xfer->c_retries < WDIORETRIES) 851 printf(", xfer %p, retry %d", xfer, 852 xfer->c_retries + 1); 853 printf("\n"); 854 if (do_perror) 855 wdperror(wd, xfer); 856 857 if (xfer->c_retries < WDIORETRIES) { 858 xfer->c_retries++; 859 860 /* Rerun ASAP if just requeued */ 861 if (xfer->c_bio.error == REQUEUE) { 862 SLIST_INSERT_HEAD(&wd->sc_requeue_list, xfer, 863 c_retrychain); 864 callout_reset(&wd->sc_requeue_callout, 865 1, wdbiorequeue, wd); 866 } else { 867 SLIST_INSERT_HEAD(&wd->sc_retry_list, xfer, 868 c_retrychain); 869 callout_reset(&wd->sc_retry_callout, 870 RECOVERYTIME, wdbioretry, wd); 871 } 872 873 mutex_exit(&wd->sc_lock); 874 return; 875 } 876 877 mutex_exit(&wd->sc_lock); 878 879 #ifdef WD_SOFTBADSECT 880 /* 881 * Not all errors indicate a failed block but those that do, 882 * put the block on the bad-block list for the device. Only 883 * do this for reads because the drive should do it for writes, 884 * itself, according to Manuel. 885 */ 886 if ((bp->b_flags & B_READ) && 887 ((wd->drvp->ata_vers >= 4 && xfer->c_bio.r_error & 64) || 888 (wd->drvp->ata_vers < 4 && xfer->c_bio.r_error & 192))) { 889 struct disk_badsectors *dbs; 890 891 dbs = kmem_zalloc(sizeof *dbs, KM_NOSLEEP); 892 if (dbs == NULL) { 893 aprint_error_dev(dksc->sc_dev, 894 "failed to add bad block to list\n"); 895 goto out; 896 } 897 898 dbs->dbs_min = bp->b_rawblkno; 899 dbs->dbs_max = dbs->dbs_min + 900 (bp->b_bcount /wd->sc_blksize) - 1; 901 microtime(&dbs->dbs_failedat); 902 903 mutex_enter(&wd->sc_lock); 904 SLIST_INSERT_HEAD(&wd->sc_bslist, dbs, dbs_next); 905 wd->sc_bscount++; 906 mutex_exit(&wd->sc_lock); 907 } 908 out: 909 #endif 910 bp->b_error = EIO; 911 break; 912 case NOERROR: 913 noerror: if ((xfer->c_bio.flags & ATA_CORR) || xfer->c_retries > 0) 914 aprint_error_dev(dksc->sc_dev, 915 "soft error (corrected) xfer %p\n", xfer); 916 #ifdef WD_CHAOS_MONKEY 917 KASSERT((xfer->c_flags & C_CHAOS) == 0); 918 #endif 919 break; 920 case ERR_NODEV: 921 bp->b_error = EIO; 922 break; 923 } 924 if (__predict_false(bp->b_error != 0) && bp->b_resid == 0) { 925 /* 926 * the disk or controller sometimes report a complete 927 * xfer, when there has been an error. This is wrong, 928 * assume nothing got transfered in this case 929 */ 930 bp->b_resid = bp->b_bcount; 931 } 932 933 ata_free_xfer(wd->drvp->chnl_softc, xfer); 934 935 dk_done(dksc, bp); 936 } 937 938 static void 939 wdbioretry(void *v) 940 { 941 struct wd_softc *wd = v; 942 struct ata_xfer *xfer; 943 944 ATADEBUG_PRINT(("%s %s\n", __func__, wd->sc_dksc.sc_xname), 945 DEBUG_XFERS); 946 947 mutex_enter(&wd->sc_lock); 948 while ((xfer = SLIST_FIRST(&wd->sc_retry_list))) { 949 SLIST_REMOVE_HEAD(&wd->sc_retry_list, c_retrychain); 950 wdstart1(wd, xfer->c_bio.bp, xfer); 951 } 952 mutex_exit(&wd->sc_lock); 953 } 954 955 static void 956 wdbiorequeue(void *v) 957 { 958 struct wd_softc *wd = v; 959 struct ata_xfer *xfer; 960 961 ATADEBUG_PRINT(("%s %s\n", __func__, wd->sc_dksc.sc_xname), 962 DEBUG_XFERS); 963 964 mutex_enter(&wd->sc_lock); 965 while ((xfer = SLIST_FIRST(&wd->sc_requeue_list))) { 966 SLIST_REMOVE_HEAD(&wd->sc_requeue_list, c_retrychain); 967 wdstart1(wd, xfer->c_bio.bp, xfer); 968 } 969 mutex_exit(&wd->sc_lock); 970 } 971 972 static void 973 wdminphys(struct buf *bp) 974 { 975 const struct wd_softc * const wd = 976 device_lookup_private(&wd_cd, WDUNIT(bp->b_dev)); 977 int maxsectors; 978 979 /* 980 * The limit is actually 65536 for LBA48 and 256 for non-LBA48, 981 * but that requires to set the count for the ATA command 982 * to 0, which is somewhat error prone, so better stay safe. 983 */ 984 if (wd->sc_flags & WDF_LBA48) 985 maxsectors = 65535; 986 else 987 maxsectors = 128; 988 989 if (bp->b_bcount > (wd->sc_blksize * maxsectors)) 990 bp->b_bcount = (wd->sc_blksize * maxsectors); 991 992 minphys(bp); 993 } 994 995 static void 996 wd_iosize(device_t dev, int *count) 997 { 998 struct buf B; 999 int bmaj; 1000 1001 bmaj = bdevsw_lookup_major(&wd_bdevsw); 1002 B.b_dev = MAKEWDDEV(bmaj,device_unit(dev),RAW_PART); 1003 B.b_bcount = *count; 1004 1005 wdminphys(&B); 1006 1007 *count = B.b_bcount; 1008 } 1009 1010 static int 1011 wdread(dev_t dev, struct uio *uio, int flags) 1012 { 1013 1014 ATADEBUG_PRINT(("wdread\n"), DEBUG_XFERS); 1015 return (physio(wdstrategy, NULL, dev, B_READ, wdminphys, uio)); 1016 } 1017 1018 static int 1019 wdwrite(dev_t dev, struct uio *uio, int flags) 1020 { 1021 1022 ATADEBUG_PRINT(("wdwrite\n"), DEBUG_XFERS); 1023 return (physio(wdstrategy, NULL, dev, B_WRITE, wdminphys, uio)); 1024 } 1025 1026 static int 1027 wdopen(dev_t dev, int flag, int fmt, struct lwp *l) 1028 { 1029 struct wd_softc *wd; 1030 struct dk_softc *dksc; 1031 int unit, part, error; 1032 1033 ATADEBUG_PRINT(("wdopen\n"), DEBUG_FUNCS); 1034 unit = WDUNIT(dev); 1035 wd = device_lookup_private(&wd_cd, unit); 1036 if (wd == NULL) 1037 return (ENXIO); 1038 dksc = &wd->sc_dksc; 1039 1040 if (! device_is_active(dksc->sc_dev)) 1041 return (ENODEV); 1042 1043 part = WDPART(dev); 1044 1045 if (wd->sc_capacity == 0) 1046 return (ENODEV); 1047 1048 /* 1049 * If any partition is open, but the disk has been invalidated, 1050 * disallow further opens. 1051 */ 1052 if ((wd->sc_flags & (WDF_OPEN | WDF_LOADED)) == WDF_OPEN) { 1053 if (part != RAW_PART || fmt != S_IFCHR) 1054 return EIO; 1055 } 1056 1057 error = dk_open(dksc, dev, flag, fmt, l); 1058 1059 return error; 1060 } 1061 1062 /* 1063 * Serialized by caller 1064 */ 1065 static int 1066 wd_firstopen(device_t self, dev_t dev, int flag, int fmt) 1067 { 1068 struct wd_softc *wd = device_private(self); 1069 struct dk_softc *dksc = &wd->sc_dksc; 1070 int error; 1071 1072 error = wd->atabus->ata_addref(wd->drvp); 1073 if (error) 1074 return error; 1075 1076 if ((wd->sc_flags & WDF_LOADED) == 0) { 1077 int param_error; 1078 1079 /* Load the physical device parameters. */ 1080 param_error = wd_get_params(wd, AT_WAIT, &wd->sc_params); 1081 if (param_error != 0) { 1082 aprint_error_dev(dksc->sc_dev, "IDENTIFY failed\n"); 1083 error = EIO; 1084 goto bad; 1085 } 1086 wd_set_geometry(wd); 1087 wd->sc_flags |= WDF_LOADED; 1088 } 1089 1090 wd->sc_flags |= WDF_OPEN; 1091 return 0; 1092 1093 bad: 1094 wd->atabus->ata_delref(wd->drvp); 1095 return error; 1096 } 1097 1098 /* 1099 * Caller must hold wd->sc_dk.dk_openlock. 1100 */ 1101 static int 1102 wd_lastclose(device_t self) 1103 { 1104 struct wd_softc *wd = device_private(self); 1105 1106 KASSERTMSG(bufq_peek(wd->sc_dksc.sc_bufq) == NULL, "bufq not empty"); 1107 1108 wd_flushcache(wd, AT_WAIT, false); 1109 1110 wd->atabus->ata_delref(wd->drvp); 1111 wd->sc_flags &= ~WDF_OPEN; 1112 1113 return 0; 1114 } 1115 1116 static int 1117 wdclose(dev_t dev, int flag, int fmt, struct lwp *l) 1118 { 1119 struct wd_softc *wd; 1120 struct dk_softc *dksc; 1121 int unit; 1122 1123 unit = WDUNIT(dev); 1124 wd = device_lookup_private(&wd_cd, unit); 1125 dksc = &wd->sc_dksc; 1126 1127 return dk_close(dksc, dev, flag, fmt, l); 1128 } 1129 1130 void 1131 wdperror(const struct wd_softc *wd, struct ata_xfer *xfer) 1132 { 1133 static const char *const errstr0_3[] = {"address mark not found", 1134 "track 0 not found", "aborted command", "media change requested", 1135 "id not found", "media changed", "uncorrectable data error", 1136 "bad block detected"}; 1137 static const char *const errstr4_5[] = { 1138 "obsolete (address mark not found)", 1139 "no media/write protected", "aborted command", 1140 "media change requested", "id not found", "media changed", 1141 "uncorrectable data error", "interface CRC error"}; 1142 const char *const *errstr; 1143 int i; 1144 const char *sep = ""; 1145 1146 const struct dk_softc *dksc = &wd->sc_dksc; 1147 const char *devname = dksc->sc_xname; 1148 struct ata_drive_datas *drvp = wd->drvp; 1149 int errno = xfer->c_bio.r_error; 1150 1151 if (drvp->ata_vers >= 4) 1152 errstr = errstr4_5; 1153 else 1154 errstr = errstr0_3; 1155 1156 printf("%s: (", devname); 1157 1158 if (errno == 0) 1159 printf("error not notified"); 1160 1161 for (i = 0; i < 8; i++) { 1162 if (errno & (1 << i)) { 1163 printf("%s%s", sep, errstr[i]); 1164 sep = ", "; 1165 } 1166 } 1167 printf(")\n"); 1168 } 1169 1170 int 1171 wdioctl(dev_t dev, u_long cmd, void *addr, int flag, struct lwp *l) 1172 { 1173 struct wd_softc *wd = 1174 device_lookup_private(&wd_cd, WDUNIT(dev)); 1175 struct dk_softc *dksc = &wd->sc_dksc; 1176 1177 ATADEBUG_PRINT(("wdioctl\n"), DEBUG_FUNCS); 1178 1179 if ((wd->sc_flags & WDF_LOADED) == 0) 1180 return EIO; 1181 1182 switch (cmd) { 1183 #ifdef HAS_BAD144_HANDLING 1184 case DIOCSBAD: 1185 if ((flag & FWRITE) == 0) 1186 return EBADF; 1187 dksc->sc_dkdev.dk_cpulabel->bad = *(struct dkbad *)addr; 1188 dksc->sc_dkdev.dk_label->d_flags |= D_BADSECT; 1189 bad144intern(wd); 1190 return 0; 1191 #endif 1192 #ifdef WD_SOFTBADSECT 1193 case DIOCBSLIST : 1194 { 1195 uint32_t count, missing, skip; 1196 struct disk_badsecinfo dbsi; 1197 struct disk_badsectors *dbs; 1198 size_t available; 1199 uint8_t *laddr; 1200 1201 dbsi = *(struct disk_badsecinfo *)addr; 1202 missing = wd->sc_bscount; 1203 count = 0; 1204 available = dbsi.dbsi_bufsize; 1205 skip = dbsi.dbsi_skip; 1206 laddr = (uint8_t *)dbsi.dbsi_buffer; 1207 1208 /* 1209 * We start this loop with the expectation that all of the 1210 * entries will be missed and decrement this counter each 1211 * time we either skip over one (already copied out) or 1212 * we actually copy it back to user space. The structs 1213 * holding the bad sector information are copied directly 1214 * back to user space whilst the summary is returned via 1215 * the struct passed in via the ioctl. 1216 */ 1217 mutex_enter(&wd->sc_lock); 1218 SLIST_FOREACH(dbs, &wd->sc_bslist, dbs_next) { 1219 if (skip > 0) { 1220 missing--; 1221 skip--; 1222 continue; 1223 } 1224 if (available < sizeof(*dbs)) 1225 break; 1226 available -= sizeof(*dbs); 1227 copyout(dbs, laddr, sizeof(*dbs)); 1228 laddr += sizeof(*dbs); 1229 missing--; 1230 count++; 1231 } 1232 mutex_exit(&wd->sc_lock); 1233 dbsi.dbsi_left = missing; 1234 dbsi.dbsi_copied = count; 1235 *(struct disk_badsecinfo *)addr = dbsi; 1236 return 0; 1237 } 1238 1239 case DIOCBSFLUSH : 1240 /* Clean out the bad sector list */ 1241 mutex_enter(&wd->sc_lock); 1242 while (!SLIST_EMPTY(&wd->sc_bslist)) { 1243 struct disk_badsectors *dbs = 1244 SLIST_FIRST(&wd->sc_bslist); 1245 SLIST_REMOVE_HEAD(&wd->sc_bslist, dbs_next); 1246 kmem_free(dbs, sizeof(*dbs)); 1247 } 1248 mutex_exit(&wd->sc_lock); 1249 wd->sc_bscount = 0; 1250 return 0; 1251 #endif 1252 1253 #ifdef notyet 1254 case DIOCWFORMAT: 1255 if ((flag & FWRITE) == 0) 1256 return EBADF; 1257 { 1258 register struct format_op *fop; 1259 struct iovec aiov; 1260 struct uio auio; 1261 int error1; 1262 1263 fop = (struct format_op *)addr; 1264 aiov.iov_base = fop->df_buf; 1265 aiov.iov_len = fop->df_count; 1266 auio.uio_iov = &aiov; 1267 auio.uio_iovcnt = 1; 1268 auio.uio_resid = fop->df_count; 1269 auio.uio_offset = 1270 fop->df_startblk * wd->sc_dk.dk_label->d_secsize; 1271 auio.uio_vmspace = l->l_proc->p_vmspace; 1272 error1 = physio(wdformat, NULL, dev, B_WRITE, wdminphys, 1273 &auio); 1274 fop->df_count -= auio.uio_resid; 1275 fop->df_reg[0] = wdc->sc_status; 1276 fop->df_reg[1] = wdc->sc_error; 1277 return error1; 1278 } 1279 #endif 1280 case DIOCGCACHE: 1281 return wd_getcache(wd, (int *)addr); 1282 1283 case DIOCSCACHE: 1284 return wd_setcache(wd, *(int *)addr); 1285 1286 case DIOCCACHESYNC: 1287 return wd_flushcache(wd, AT_WAIT, true); 1288 1289 case ATAIOCCOMMAND: 1290 /* 1291 * Make sure this command is (relatively) safe first 1292 */ 1293 if ((((atareq_t *) addr)->flags & ATACMD_READ) == 0 && 1294 (flag & FWRITE) == 0) 1295 return (EBADF); 1296 { 1297 struct wd_ioctl *wi; 1298 atareq_t *atareq = (atareq_t *) addr; 1299 int error1; 1300 1301 wi = wi_get(wd); 1302 wi->wi_atareq = *atareq; 1303 1304 if (atareq->datalen && atareq->flags & 1305 (ATACMD_READ | ATACMD_WRITE)) { 1306 void *tbuf; 1307 if (atareq->datalen < DEV_BSIZE 1308 && atareq->command == WDCC_IDENTIFY) { 1309 tbuf = kmem_zalloc(DEV_BSIZE, KM_SLEEP); 1310 wi->wi_iov.iov_base = tbuf; 1311 wi->wi_iov.iov_len = DEV_BSIZE; 1312 UIO_SETUP_SYSSPACE(&wi->wi_uio); 1313 } else { 1314 tbuf = NULL; 1315 wi->wi_iov.iov_base = atareq->databuf; 1316 wi->wi_iov.iov_len = atareq->datalen; 1317 wi->wi_uio.uio_vmspace = l->l_proc->p_vmspace; 1318 } 1319 wi->wi_uio.uio_iov = &wi->wi_iov; 1320 wi->wi_uio.uio_iovcnt = 1; 1321 wi->wi_uio.uio_resid = atareq->datalen; 1322 wi->wi_uio.uio_offset = 0; 1323 wi->wi_uio.uio_rw = 1324 (atareq->flags & ATACMD_READ) ? B_READ : B_WRITE; 1325 error1 = physio(wdioctlstrategy, &wi->wi_bp, dev, 1326 (atareq->flags & ATACMD_READ) ? B_READ : B_WRITE, 1327 wdminphys, &wi->wi_uio); 1328 if (tbuf != NULL && error1 == 0) { 1329 error1 = copyout(tbuf, atareq->databuf, 1330 atareq->datalen); 1331 kmem_free(tbuf, DEV_BSIZE); 1332 } 1333 } else { 1334 /* No need to call physio if we don't have any 1335 user data */ 1336 wi->wi_bp.b_flags = 0; 1337 wi->wi_bp.b_data = 0; 1338 wi->wi_bp.b_bcount = 0; 1339 wi->wi_bp.b_dev = dev; 1340 wi->wi_bp.b_proc = l->l_proc; 1341 wdioctlstrategy(&wi->wi_bp); 1342 error1 = wi->wi_bp.b_error; 1343 } 1344 *atareq = wi->wi_atareq; 1345 wi_free(wi); 1346 return(error1); 1347 } 1348 1349 default: 1350 return dk_ioctl(dksc, dev, cmd, addr, flag, l); 1351 } 1352 1353 #ifdef DIAGNOSTIC 1354 panic("wdioctl: impossible"); 1355 #endif 1356 } 1357 1358 static int 1359 wd_discard(device_t dev, off_t pos, off_t len) 1360 { 1361 struct wd_softc *wd = device_private(dev); 1362 daddr_t bno; 1363 long size, done; 1364 long maxatonce, amount; 1365 int result; 1366 1367 if (!(wd->sc_params.atap_ata_major & WDC_VER_ATA7) 1368 || !(wd->sc_params.support_dsm & ATA_SUPPORT_DSM_TRIM)) { 1369 /* not supported; ignore request */ 1370 ATADEBUG_PRINT(("wddiscard (unsupported)\n"), DEBUG_FUNCS); 1371 return 0; 1372 } 1373 maxatonce = 0xffff; /*wd->sc_params.max_dsm_blocks*/ 1374 1375 ATADEBUG_PRINT(("wddiscard\n"), DEBUG_FUNCS); 1376 1377 if ((wd->sc_flags & WDF_LOADED) == 0) 1378 return EIO; 1379 1380 /* round the start up and the end down */ 1381 bno = (pos + wd->sc_blksize - 1) / wd->sc_blksize; 1382 size = ((pos + len) / wd->sc_blksize) - bno; 1383 1384 done = 0; 1385 while (done < size) { 1386 amount = size - done; 1387 if (amount > maxatonce) { 1388 amount = maxatonce; 1389 } 1390 result = wd_trim(wd, bno + done, amount); 1391 if (result) { 1392 return result; 1393 } 1394 done += amount; 1395 } 1396 return 0; 1397 } 1398 1399 static int 1400 wddiscard(dev_t dev, off_t pos, off_t len) 1401 { 1402 struct wd_softc *wd; 1403 struct dk_softc *dksc; 1404 int unit; 1405 1406 unit = WDUNIT(dev); 1407 wd = device_lookup_private(&wd_cd, unit); 1408 dksc = &wd->sc_dksc; 1409 1410 return dk_discard(dksc, dev, pos, len); 1411 } 1412 1413 #ifdef B_FORMAT 1414 int 1415 wdformat(struct buf *bp) 1416 { 1417 1418 bp->b_flags |= B_FORMAT; 1419 return wdstrategy(bp); 1420 } 1421 #endif 1422 1423 int 1424 wdsize(dev_t dev) 1425 { 1426 struct wd_softc *wd; 1427 struct dk_softc *dksc; 1428 int unit; 1429 1430 ATADEBUG_PRINT(("wdsize\n"), DEBUG_FUNCS); 1431 1432 unit = WDUNIT(dev); 1433 wd = device_lookup_private(&wd_cd, unit); 1434 if (wd == NULL) 1435 return (-1); 1436 dksc = &wd->sc_dksc; 1437 1438 if (!device_is_active(dksc->sc_dev)) 1439 return (-1); 1440 1441 return dk_size(dksc, dev); 1442 } 1443 1444 /* 1445 * Dump core after a system crash. 1446 */ 1447 static int 1448 wddump(dev_t dev, daddr_t blkno, void *va, size_t size) 1449 { 1450 struct wd_softc *wd; 1451 struct dk_softc *dksc; 1452 int unit; 1453 1454 /* Check if recursive dump; if so, punt. */ 1455 if (wddoingadump) 1456 return EFAULT; 1457 wddoingadump = 1; 1458 1459 unit = WDUNIT(dev); 1460 wd = device_lookup_private(&wd_cd, unit); 1461 if (wd == NULL) 1462 return (ENXIO); 1463 dksc = &wd->sc_dksc; 1464 1465 return dk_dump(dksc, dev, blkno, va, size); 1466 } 1467 1468 static int 1469 wd_dumpblocks(device_t dev, void *va, daddr_t blkno, int nblk) 1470 { 1471 struct wd_softc *wd = device_private(dev); 1472 struct dk_softc *dksc = &wd->sc_dksc; 1473 struct disk_geom *dg = &dksc->sc_dkdev.dk_geom; 1474 struct ata_xfer *xfer = &wd->dump_xfer; 1475 int err; 1476 1477 /* Recalibrate, if first dump transfer. */ 1478 if (wddumprecalibrated == 0) { 1479 wddumprecalibrated = 1; 1480 (*wd->atabus->ata_reset_drive)(wd->drvp, 1481 AT_POLL | AT_RST_EMERG, NULL); 1482 wd->drvp->state = RESET; 1483 } 1484 1485 memset(xfer, 0, sizeof(*xfer)); 1486 xfer->c_flags |= C_PRIVATE_ALLOC; 1487 1488 xfer->c_bio.blkno = blkno; 1489 xfer->c_bio.flags = ATA_POLL; 1490 if (wd->sc_flags & WDF_LBA48 && 1491 (xfer->c_bio.blkno + nblk) > wd->sc_capacity28) 1492 xfer->c_bio.flags |= ATA_LBA48; 1493 if (wd->sc_flags & WDF_LBA) 1494 xfer->c_bio.flags |= ATA_LBA; 1495 xfer->c_bio.bcount = nblk * dg->dg_secsize; 1496 xfer->c_bio.databuf = va; 1497 #ifndef WD_DUMP_NOT_TRUSTED 1498 switch (err = wd->atabus->ata_bio(wd->drvp, xfer)) { 1499 case ATACMD_TRY_AGAIN: 1500 panic("wddump: try again"); 1501 break; 1502 case ATACMD_QUEUED: 1503 panic("wddump: polled command has been queued"); 1504 break; 1505 case ATACMD_COMPLETE: 1506 break; 1507 default: 1508 panic("wddump: unknown atacmd code %d", err); 1509 } 1510 switch(err = xfer->c_bio.error) { 1511 case TIMEOUT: 1512 printf("wddump: device timed out"); 1513 err = EIO; 1514 break; 1515 case ERR_DF: 1516 printf("wddump: drive fault"); 1517 err = EIO; 1518 break; 1519 case ERR_DMA: 1520 printf("wddump: DMA error"); 1521 err = EIO; 1522 break; 1523 case ERROR: 1524 printf("wddump: "); 1525 wdperror(wd, xfer); 1526 err = EIO; 1527 break; 1528 case NOERROR: 1529 err = 0; 1530 break; 1531 default: 1532 panic("wddump: unknown error type %x", err); 1533 } 1534 1535 if (err != 0) { 1536 printf("\n"); 1537 return err; 1538 } 1539 #else /* WD_DUMP_NOT_TRUSTED */ 1540 /* Let's just talk about this first... */ 1541 printf("wd%d: dump addr 0x%x, cylin %d, head %d, sector %d\n", 1542 unit, va, cylin, head, sector); 1543 delay(500 * 1000); /* half a second */ 1544 #endif 1545 1546 wddoingadump = 0; 1547 return 0; 1548 } 1549 1550 #ifdef HAS_BAD144_HANDLING 1551 /* 1552 * Internalize the bad sector table. 1553 */ 1554 void 1555 bad144intern(struct wd_softc *wd) 1556 { 1557 struct dk_softc *dksc = &wd->sc_dksc; 1558 struct dkbad *bt = &dksc->sc_dkdev.dk_cpulabel->bad; 1559 struct disklabel *lp = dksc->sc_dkdev.dk_label; 1560 int i = 0; 1561 1562 ATADEBUG_PRINT(("bad144intern\n"), DEBUG_XFERS); 1563 1564 for (; i < NBT_BAD; i++) { 1565 if (bt->bt_bad[i].bt_cyl == 0xffff) 1566 break; 1567 wd->drvp->badsect[i] = 1568 bt->bt_bad[i].bt_cyl * lp->d_secpercyl + 1569 (bt->bt_bad[i].bt_trksec >> 8) * lp->d_nsectors + 1570 (bt->bt_bad[i].bt_trksec & 0xff); 1571 } 1572 for (; i < NBT_BAD+1; i++) 1573 wd->drvp->badsect[i] = -1; 1574 } 1575 #endif 1576 1577 static void 1578 wd_set_geometry(struct wd_softc *wd) 1579 { 1580 struct dk_softc *dksc = &wd->sc_dksc; 1581 struct disk_geom *dg = &dksc->sc_dkdev.dk_geom; 1582 1583 memset(dg, 0, sizeof(*dg)); 1584 1585 dg->dg_secperunit = wd->sc_capacity; 1586 dg->dg_secsize = wd->sc_blksize; 1587 dg->dg_nsectors = wd->sc_params.atap_sectors; 1588 dg->dg_ntracks = wd->sc_params.atap_heads; 1589 if ((wd->sc_flags & WDF_LBA) == 0) 1590 dg->dg_ncylinders = wd->sc_params.atap_cylinders; 1591 1592 disk_set_info(dksc->sc_dev, &dksc->sc_dkdev, NULL); 1593 } 1594 1595 int 1596 wd_get_params(struct wd_softc *wd, uint8_t flags, struct ataparams *params) 1597 { 1598 1599 switch (wd->atabus->ata_get_params(wd->drvp, flags, params)) { 1600 case CMD_AGAIN: 1601 return 1; 1602 case CMD_ERR: 1603 if (wd->drvp->drive_type != ATA_DRIVET_OLD) 1604 return 1; 1605 /* 1606 * We `know' there's a drive here; just assume it's old. 1607 * This geometry is only used to read the MBR and print a 1608 * (false) attach message. 1609 */ 1610 strncpy(params->atap_model, "ST506", 1611 sizeof params->atap_model); 1612 params->atap_config = ATA_CFG_FIXED; 1613 params->atap_cylinders = 1024; 1614 params->atap_heads = 8; 1615 params->atap_sectors = 17; 1616 params->atap_multi = 1; 1617 params->atap_capabilities1 = params->atap_capabilities2 = 0; 1618 wd->drvp->ata_vers = -1; /* Mark it as pre-ATA */ 1619 /* FALLTHROUGH */ 1620 case CMD_OK: 1621 return 0; 1622 default: 1623 panic("wd_get_params: bad return code from ata_get_params"); 1624 /* NOTREACHED */ 1625 } 1626 } 1627 1628 int 1629 wd_getcache(struct wd_softc *wd, int *bitsp) 1630 { 1631 struct ataparams params; 1632 1633 if (wd_get_params(wd, AT_WAIT, ¶ms) != 0) 1634 return EIO; 1635 if (params.atap_cmd_set1 == 0x0000 || 1636 params.atap_cmd_set1 == 0xffff || 1637 (params.atap_cmd_set1 & WDC_CMD1_CACHE) == 0) { 1638 *bitsp = 0; 1639 return 0; 1640 } 1641 *bitsp = DKCACHE_WCHANGE | DKCACHE_READ; 1642 if (params.atap_cmd1_en & WDC_CMD1_CACHE) 1643 *bitsp |= DKCACHE_WRITE; 1644 1645 if (WD_USE_NCQ(wd) || (wd->drvp->drive_flags & ATA_DRIVE_WFUA)) 1646 *bitsp |= DKCACHE_FUA; 1647 1648 return 0; 1649 } 1650 1651 const char at_errbits[] = "\20\10ERROR\11TIMEOU\12DF"; 1652 1653 int 1654 wd_setcache(struct wd_softc *wd, int bits) 1655 { 1656 struct dk_softc *dksc = &wd->sc_dksc; 1657 struct ataparams params; 1658 struct ata_xfer *xfer; 1659 int error; 1660 1661 if (wd_get_params(wd, AT_WAIT, ¶ms) != 0) 1662 return EIO; 1663 1664 if (params.atap_cmd_set1 == 0x0000 || 1665 params.atap_cmd_set1 == 0xffff || 1666 (params.atap_cmd_set1 & WDC_CMD1_CACHE) == 0) 1667 return EOPNOTSUPP; 1668 1669 if ((bits & DKCACHE_READ) == 0 || 1670 (bits & DKCACHE_SAVE) != 0) 1671 return EOPNOTSUPP; 1672 1673 xfer = ata_get_xfer(wd->drvp->chnl_softc, true); 1674 1675 xfer->c_ata_c.r_command = SET_FEATURES; 1676 xfer->c_ata_c.r_st_bmask = 0; 1677 xfer->c_ata_c.r_st_pmask = 0; 1678 xfer->c_ata_c.timeout = 30000; /* 30s timeout */ 1679 xfer->c_ata_c.flags = AT_WAIT; 1680 if (bits & DKCACHE_WRITE) 1681 xfer->c_ata_c.r_features = WDSF_WRITE_CACHE_EN; 1682 else 1683 xfer->c_ata_c.r_features = WDSF_WRITE_CACHE_DS; 1684 if (wd->atabus->ata_exec_command(wd->drvp, xfer) != ATACMD_COMPLETE) { 1685 aprint_error_dev(dksc->sc_dev, 1686 "wd_setcache command not complete\n"); 1687 error = EIO; 1688 goto out; 1689 } 1690 1691 if (xfer->c_ata_c.flags & (AT_ERROR | AT_TIMEOU | AT_DF)) { 1692 char sbuf[sizeof(at_errbits) + 64]; 1693 snprintb(sbuf, sizeof(sbuf), at_errbits, xfer->c_ata_c.flags); 1694 aprint_error_dev(dksc->sc_dev, "wd_setcache: status=%s\n", sbuf); 1695 error = EIO; 1696 goto out; 1697 } 1698 1699 error = 0; 1700 1701 out: 1702 ata_free_xfer(wd->drvp->chnl_softc, xfer); 1703 return error; 1704 } 1705 1706 static int 1707 wd_standby(struct wd_softc *wd, int flags) 1708 { 1709 struct dk_softc *dksc = &wd->sc_dksc; 1710 struct ata_xfer *xfer; 1711 int error; 1712 1713 xfer = ata_get_xfer(wd->drvp->chnl_softc, true); 1714 1715 xfer->c_ata_c.r_command = WDCC_STANDBY_IMMED; 1716 xfer->c_ata_c.r_st_bmask = WDCS_DRDY; 1717 xfer->c_ata_c.r_st_pmask = WDCS_DRDY; 1718 xfer->c_ata_c.flags = flags; 1719 xfer->c_ata_c.timeout = 30000; /* 30s timeout */ 1720 if (wd->atabus->ata_exec_command(wd->drvp, xfer) != ATACMD_COMPLETE) { 1721 aprint_error_dev(dksc->sc_dev, 1722 "standby immediate command didn't complete\n"); 1723 error = EIO; 1724 goto out; 1725 } 1726 if (xfer->c_ata_c.flags & AT_ERROR) { 1727 if (xfer->c_ata_c.r_error == WDCE_ABRT) { 1728 /* command not supported */ 1729 error = ENODEV; 1730 goto out; 1731 } 1732 } 1733 if (xfer->c_ata_c.flags & (AT_ERROR | AT_TIMEOU | AT_DF)) { 1734 char sbuf[sizeof(at_errbits) + 64]; 1735 snprintb(sbuf, sizeof(sbuf), at_errbits, xfer->c_ata_c.flags); 1736 aprint_error_dev(dksc->sc_dev, "wd_standby: status=%s\n", sbuf); 1737 error = EIO; 1738 goto out; 1739 } 1740 error = 0; 1741 1742 out: 1743 ata_free_xfer(wd->drvp->chnl_softc, xfer); 1744 return error; 1745 } 1746 1747 int 1748 wd_flushcache(struct wd_softc *wd, int flags, bool start_self) 1749 { 1750 struct dk_softc *dksc = &wd->sc_dksc; 1751 struct ata_xfer *xfer; 1752 int error; 1753 1754 /* 1755 * WDCC_FLUSHCACHE is here since ATA-4, but some drives report 1756 * only ATA-2 and still support it. 1757 */ 1758 if (wd->drvp->ata_vers < 4 && 1759 ((wd->sc_params.atap_cmd_set2 & WDC_CMD2_FC) == 0 || 1760 wd->sc_params.atap_cmd_set2 == 0xffff)) 1761 return ENODEV; 1762 1763 xfer = ata_get_xfer(wd->drvp->chnl_softc, true); 1764 1765 if ((wd->sc_params.atap_cmd2_en & ATA_CMD2_LBA48) != 0 && 1766 (wd->sc_params.atap_cmd2_en & ATA_CMD2_FCE) != 0) { 1767 xfer->c_ata_c.r_command = WDCC_FLUSHCACHE_EXT; 1768 flags |= AT_LBA48; 1769 } else 1770 xfer->c_ata_c.r_command = WDCC_FLUSHCACHE; 1771 xfer->c_ata_c.r_st_bmask = WDCS_DRDY; 1772 xfer->c_ata_c.r_st_pmask = WDCS_DRDY; 1773 xfer->c_ata_c.flags = flags | AT_READREG; 1774 xfer->c_ata_c.timeout = 300000; /* 5m timeout */ 1775 if (wd->atabus->ata_exec_command(wd->drvp, xfer) != ATACMD_COMPLETE) { 1776 aprint_error_dev(dksc->sc_dev, 1777 "flush cache command didn't complete\n"); 1778 error = EIO; 1779 goto out_xfer; 1780 } 1781 if (xfer->c_ata_c.flags & AT_ERROR) { 1782 if (xfer->c_ata_c.r_error == WDCE_ABRT) { 1783 /* command not supported */ 1784 error = ENODEV; 1785 goto out_xfer; 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_flushcache: status=%s\n", 1792 sbuf); 1793 error = EIO; 1794 goto out_xfer; 1795 } 1796 error = 0; 1797 1798 out_xfer: 1799 ata_free_xfer(wd->drvp->chnl_softc, xfer); 1800 return error; 1801 } 1802 1803 static int 1804 wd_trim(struct wd_softc *wd, daddr_t bno, long size) 1805 { 1806 struct dk_softc *dksc = &wd->sc_dksc; 1807 struct ata_xfer *xfer; 1808 int error; 1809 unsigned char *req; 1810 1811 xfer = ata_get_xfer(wd->drvp->chnl_softc, true); 1812 1813 req = kmem_zalloc(512, KM_SLEEP); 1814 req[0] = bno & 0xff; 1815 req[1] = (bno >> 8) & 0xff; 1816 req[2] = (bno >> 16) & 0xff; 1817 req[3] = (bno >> 24) & 0xff; 1818 req[4] = (bno >> 32) & 0xff; 1819 req[5] = (bno >> 40) & 0xff; 1820 req[6] = size & 0xff; 1821 req[7] = (size >> 8) & 0xff; 1822 1823 xfer->c_ata_c.r_command = ATA_DATA_SET_MANAGEMENT; 1824 xfer->c_ata_c.r_count = 1; 1825 xfer->c_ata_c.r_features = ATA_SUPPORT_DSM_TRIM; 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.timeout = 30000; /* 30s timeout */ 1829 xfer->c_ata_c.data = req; 1830 xfer->c_ata_c.bcount = 512; 1831 xfer->c_ata_c.flags |= AT_WRITE | AT_WAIT; 1832 if (wd->atabus->ata_exec_command(wd->drvp, xfer) != ATACMD_COMPLETE) { 1833 aprint_error_dev(dksc->sc_dev, 1834 "trim command didn't complete\n"); 1835 kmem_free(req, 512); 1836 error = EIO; 1837 goto out; 1838 } 1839 kmem_free(req, 512); 1840 if (xfer->c_ata_c.flags & AT_ERROR) { 1841 if (xfer->c_ata_c.r_error == WDCE_ABRT) { 1842 /* command not supported */ 1843 error = ENODEV; 1844 goto out; 1845 } 1846 } 1847 if (xfer->c_ata_c.flags & (AT_ERROR | AT_TIMEOU | AT_DF)) { 1848 char sbuf[sizeof(at_errbits) + 64]; 1849 snprintb(sbuf, sizeof(sbuf), at_errbits, xfer->c_ata_c.flags); 1850 aprint_error_dev(dksc->sc_dev, "wd_trim: status=%s\n", 1851 sbuf); 1852 error = EIO; 1853 goto out; 1854 } 1855 error = 0; 1856 1857 out: 1858 ata_free_xfer(wd->drvp->chnl_softc, xfer); 1859 return error; 1860 } 1861 1862 bool 1863 wd_shutdown(device_t dev, int how) 1864 { 1865 struct wd_softc *wd = device_private(dev); 1866 1867 /* the adapter needs to be enabled */ 1868 if (wd->atabus->ata_addref(wd->drvp)) 1869 return true; /* no need to complain */ 1870 1871 wd_flushcache(wd, AT_POLL, false); 1872 if ((how & RB_POWERDOWN) == RB_POWERDOWN) 1873 wd_standby(wd, AT_POLL); 1874 return true; 1875 } 1876 1877 /* 1878 * Allocate space for a ioctl queue structure. Mostly taken from 1879 * scsipi_ioctl.c 1880 */ 1881 struct wd_ioctl * 1882 wi_get(struct wd_softc *wd) 1883 { 1884 struct wd_ioctl *wi; 1885 1886 wi = kmem_zalloc(sizeof(struct wd_ioctl), KM_SLEEP); 1887 wi->wi_softc = wd; 1888 buf_init(&wi->wi_bp); 1889 1890 return (wi); 1891 } 1892 1893 /* 1894 * Free an ioctl structure and remove it from our list 1895 */ 1896 1897 void 1898 wi_free(struct wd_ioctl *wi) 1899 { 1900 buf_destroy(&wi->wi_bp); 1901 kmem_free(wi, sizeof(*wi)); 1902 } 1903 1904 /* 1905 * Find a wd_ioctl structure based on the struct buf. 1906 */ 1907 1908 struct wd_ioctl * 1909 wi_find(struct buf *bp) 1910 { 1911 return container_of(bp, struct wd_ioctl, wi_bp); 1912 } 1913 1914 static uint 1915 wi_sector_size(const struct wd_ioctl * const wi) 1916 { 1917 switch (wi->wi_atareq.command) { 1918 case WDCC_READ: 1919 case WDCC_WRITE: 1920 case WDCC_READMULTI: 1921 case WDCC_WRITEMULTI: 1922 case WDCC_READDMA: 1923 case WDCC_WRITEDMA: 1924 case WDCC_READ_EXT: 1925 case WDCC_WRITE_EXT: 1926 case WDCC_READMULTI_EXT: 1927 case WDCC_WRITEMULTI_EXT: 1928 case WDCC_READDMA_EXT: 1929 case WDCC_WRITEDMA_EXT: 1930 case WDCC_READ_FPDMA_QUEUED: 1931 case WDCC_WRITE_FPDMA_QUEUED: 1932 return wi->wi_softc->sc_blksize; 1933 default: 1934 return 512; 1935 } 1936 } 1937 1938 /* 1939 * Ioctl pseudo strategy routine 1940 * 1941 * This is mostly stolen from scsipi_ioctl.c:scsistrategy(). What 1942 * happens here is: 1943 * 1944 * - wdioctl() queues a wd_ioctl structure. 1945 * 1946 * - wdioctl() calls physio/wdioctlstrategy based on whether or not 1947 * user space I/O is required. If physio() is called, physio() eventually 1948 * calls wdioctlstrategy(). 1949 * 1950 * - In either case, wdioctlstrategy() calls wd->atabus->ata_exec_command() 1951 * to perform the actual command 1952 * 1953 * The reason for the use of the pseudo strategy routine is because 1954 * when doing I/O to/from user space, physio _really_ wants to be in 1955 * the loop. We could put the entire buffer into the ioctl request 1956 * structure, but that won't scale if we want to do things like download 1957 * microcode. 1958 */ 1959 1960 void 1961 wdioctlstrategy(struct buf *bp) 1962 { 1963 struct wd_ioctl *wi; 1964 struct ata_xfer *xfer; 1965 int error = 0; 1966 1967 wi = wi_find(bp); 1968 if (wi == NULL) { 1969 printf("wdioctlstrategy: " 1970 "No matching ioctl request found in queue\n"); 1971 error = EINVAL; 1972 goto out2; 1973 } 1974 1975 xfer = ata_get_xfer(wi->wi_softc->drvp->chnl_softc, true); 1976 1977 /* 1978 * Abort if physio broke up the transfer 1979 */ 1980 1981 if (bp->b_bcount != wi->wi_atareq.datalen) { 1982 printf("physio split wd ioctl request... cannot proceed\n"); 1983 error = EIO; 1984 goto out; 1985 } 1986 1987 /* 1988 * Abort if we didn't get a buffer size that was a multiple of 1989 * our sector size (or overflows CHS/LBA28 sector count) 1990 */ 1991 1992 if ((bp->b_bcount % wi_sector_size(wi)) != 0 || 1993 (bp->b_bcount / wi_sector_size(wi)) >= 1994 (1 << NBBY)) { 1995 error = EINVAL; 1996 goto out; 1997 } 1998 1999 /* 2000 * Make sure a timeout was supplied in the ioctl request 2001 */ 2002 2003 if (wi->wi_atareq.timeout == 0) { 2004 error = EINVAL; 2005 goto out; 2006 } 2007 2008 if (wi->wi_atareq.flags & ATACMD_READ) 2009 xfer->c_ata_c.flags |= AT_READ; 2010 else if (wi->wi_atareq.flags & ATACMD_WRITE) 2011 xfer->c_ata_c.flags |= AT_WRITE; 2012 2013 if (wi->wi_atareq.flags & ATACMD_READREG) 2014 xfer->c_ata_c.flags |= AT_READREG; 2015 2016 if ((wi->wi_atareq.flags & ATACMD_LBA) != 0) 2017 xfer->c_ata_c.flags |= AT_LBA; 2018 2019 xfer->c_ata_c.flags |= AT_WAIT; 2020 2021 xfer->c_ata_c.timeout = wi->wi_atareq.timeout; 2022 xfer->c_ata_c.r_command = wi->wi_atareq.command; 2023 xfer->c_ata_c.r_lba = ((wi->wi_atareq.head & 0x0f) << 24) | 2024 (wi->wi_atareq.cylinder << 8) | 2025 wi->wi_atareq.sec_num; 2026 xfer->c_ata_c.r_count = wi->wi_atareq.sec_count; 2027 xfer->c_ata_c.r_features = wi->wi_atareq.features; 2028 xfer->c_ata_c.r_st_bmask = WDCS_DRDY; 2029 xfer->c_ata_c.r_st_pmask = WDCS_DRDY; 2030 xfer->c_ata_c.data = wi->wi_bp.b_data; 2031 xfer->c_ata_c.bcount = wi->wi_bp.b_bcount; 2032 2033 if (wi->wi_softc->atabus->ata_exec_command(wi->wi_softc->drvp, xfer) 2034 != ATACMD_COMPLETE) { 2035 wi->wi_atareq.retsts = ATACMD_ERROR; 2036 error = EIO; 2037 goto out; 2038 } 2039 2040 if (xfer->c_ata_c.flags & (AT_ERROR | AT_TIMEOU | AT_DF)) { 2041 if (xfer->c_ata_c.flags & AT_ERROR) { 2042 wi->wi_atareq.retsts = ATACMD_ERROR; 2043 wi->wi_atareq.error = xfer->c_ata_c.r_error; 2044 } else if (xfer->c_ata_c.flags & AT_DF) 2045 wi->wi_atareq.retsts = ATACMD_DF; 2046 else 2047 wi->wi_atareq.retsts = ATACMD_TIMEOUT; 2048 } else { 2049 wi->wi_atareq.retsts = ATACMD_OK; 2050 if (wi->wi_atareq.flags & ATACMD_READREG) { 2051 wi->wi_atareq.command = xfer->c_ata_c.r_status; 2052 wi->wi_atareq.features = xfer->c_ata_c.r_error; 2053 wi->wi_atareq.sec_count = xfer->c_ata_c.r_count; 2054 wi->wi_atareq.sec_num = xfer->c_ata_c.r_lba & 0xff; 2055 wi->wi_atareq.head = (xfer->c_ata_c.r_device & 0xf0) | 2056 ((xfer->c_ata_c.r_lba >> 24) & 0x0f); 2057 wi->wi_atareq.cylinder = 2058 (xfer->c_ata_c.r_lba >> 8) & 0xffff; 2059 wi->wi_atareq.error = xfer->c_ata_c.r_error; 2060 } 2061 } 2062 2063 out: 2064 ata_free_xfer(wi->wi_softc->drvp->chnl_softc, xfer); 2065 out2: 2066 bp->b_error = error; 2067 if (error) 2068 bp->b_resid = bp->b_bcount; 2069 biodone(bp); 2070 } 2071 2072 static void 2073 wd_sysctl_attach(struct wd_softc *wd) 2074 { 2075 struct dk_softc *dksc = &wd->sc_dksc; 2076 const struct sysctlnode *node; 2077 int error; 2078 2079 /* sysctl set-up */ 2080 if (sysctl_createv(&wd->nodelog, 0, NULL, &node, 2081 0, CTLTYPE_NODE, dksc->sc_xname, 2082 SYSCTL_DESCR("wd driver settings"), 2083 NULL, 0, NULL, 0, 2084 CTL_HW, CTL_CREATE, CTL_EOL) != 0) { 2085 aprint_error_dev(dksc->sc_dev, 2086 "could not create %s.%s sysctl node\n", 2087 "hw", dksc->sc_xname); 2088 return; 2089 } 2090 2091 wd->drv_ncq = true; 2092 if ((error = sysctl_createv(&wd->nodelog, 0, NULL, NULL, 2093 CTLFLAG_READWRITE, CTLTYPE_BOOL, "use_ncq", 2094 SYSCTL_DESCR("use NCQ if supported"), 2095 NULL, 0, &wd->drv_ncq, 0, 2096 CTL_HW, node->sysctl_num, CTL_CREATE, CTL_EOL)) 2097 != 0) { 2098 aprint_error_dev(dksc->sc_dev, 2099 "could not create %s.%s.use_ncq sysctl - error %d\n", 2100 "hw", dksc->sc_xname, error); 2101 return; 2102 } 2103 2104 wd->drv_ncq_prio = false; 2105 if ((error = sysctl_createv(&wd->nodelog, 0, NULL, NULL, 2106 CTLFLAG_READWRITE, CTLTYPE_BOOL, "use_ncq_prio", 2107 SYSCTL_DESCR("use NCQ PRIORITY if supported"), 2108 NULL, 0, &wd->drv_ncq_prio, 0, 2109 CTL_HW, node->sysctl_num, CTL_CREATE, CTL_EOL)) 2110 != 0) { 2111 aprint_error_dev(dksc->sc_dev, 2112 "could not create %s.%s.use_ncq_prio sysctl - error %d\n", 2113 "hw", dksc->sc_xname, error); 2114 return; 2115 } 2116 2117 #ifdef WD_CHAOS_MONKEY 2118 wd->drv_chaos_freq = 0; 2119 if ((error = sysctl_createv(&wd->nodelog, 0, NULL, NULL, 2120 CTLFLAG_READWRITE, CTLTYPE_INT, "chaos_freq", 2121 SYSCTL_DESCR("simulated bio read error rate"), 2122 NULL, 0, &wd->drv_chaos_freq, 0, 2123 CTL_HW, node->sysctl_num, CTL_CREATE, CTL_EOL)) 2124 != 0) { 2125 aprint_error_dev(dksc->sc_dev, 2126 "could not create %s.%s.chaos_freq sysctl - error %d\n", 2127 "hw", dksc->sc_xname, error); 2128 return; 2129 } 2130 2131 wd->drv_chaos_cnt = 0; 2132 if ((error = sysctl_createv(&wd->nodelog, 0, NULL, NULL, 2133 CTLFLAG_READONLY, CTLTYPE_INT, "chaos_cnt", 2134 SYSCTL_DESCR("number of processed bio reads"), 2135 NULL, 0, &wd->drv_chaos_cnt, 0, 2136 CTL_HW, node->sysctl_num, CTL_CREATE, CTL_EOL)) 2137 != 0) { 2138 aprint_error_dev(dksc->sc_dev, 2139 "could not create %s.%s.chaos_cnt sysctl - error %d\n", 2140 "hw", dksc->sc_xname, error); 2141 return; 2142 } 2143 #endif 2144 2145 } 2146 2147 static void 2148 wd_sysctl_detach(struct wd_softc *wd) 2149 { 2150 sysctl_teardown(&wd->nodelog); 2151 } 2152 2153 #ifdef ATADEBUG 2154 int wddebug(void); 2155 2156 int 2157 wddebug(void) 2158 { 2159 struct wd_softc *wd; 2160 struct dk_softc *dksc; 2161 int unit; 2162 2163 for (unit = 0; unit <= 3; unit++) { 2164 wd = device_lookup_private(&wd_cd, unit); 2165 if (wd == NULL) 2166 continue; 2167 dksc = &wd->sc_dksc; 2168 printf("%s fl %x bufq %p:\n", 2169 dksc->sc_xname, wd->sc_flags, bufq_peek(dksc->sc_bufq)); 2170 2171 atachannel_debug(wd->drvp->chnl_softc); 2172 } 2173 return 0; 2174 } 2175 #endif /* ATADEBUG */ 2176
Indexes created Wed Oct 22 13:09:56 GMT 2025