wd.c revision 1.274.2.8.2.6.2.3
1 /* $NetBSD: wd.c,v 1.274.2.8.2.6.2.3 2006/08/06 20:15:55 tron 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 * 3. All advertising materials mentioning features or use of this software 15 * must display the following acknowledgement: 16 * This product includes software developed by Manuel Bouyer. 17 * 4. The name of the author may not be used to endorse or promote products 18 * derived from this software without specific prior written permission. 19 * 20 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 21 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 22 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 23 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 24 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 25 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 26 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 27 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 28 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 29 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 30 */ 31 32 /*- 33 * Copyright (c) 1998, 2003, 2004 The NetBSD Foundation, Inc. 34 * All rights reserved. 35 * 36 * This code is derived from software contributed to The NetBSD Foundation 37 * by Charles M. Hannum and by Onno van der Linden. 38 * 39 * Redistribution and use in source and binary forms, with or without 40 * modification, are permitted provided that the following conditions 41 * are met: 42 * 1. Redistributions of source code must retain the above copyright 43 * notice, this list of conditions and the following disclaimer. 44 * 2. Redistributions in binary form must reproduce the above copyright 45 * notice, this list of conditions and the following disclaimer in the 46 * documentation and/or other materials provided with the distribution. 47 * 3. All advertising materials mentioning features or use of this software 48 * must display the following acknowledgement: 49 * This product includes software developed by the NetBSD 50 * Foundation, Inc. and its contributors. 51 * 4. Neither the name of The NetBSD Foundation nor the names of its 52 * contributors may be used to endorse or promote products derived 53 * from this software without specific prior written permission. 54 * 55 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 56 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 57 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 58 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 59 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 60 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 61 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 62 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 63 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 64 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 65 * POSSIBILITY OF SUCH DAMAGE. 66 */ 67 68 #include <sys/cdefs.h> 69 __KERNEL_RCSID(0, "$NetBSD: wd.c,v 1.274.2.8.2.6.2.3 2006/08/06 20:15:55 tron Exp $"); 70 71 #ifndef WDCDEBUG 72 #define WDCDEBUG 73 #endif /* WDCDEBUG */ 74 75 #include "rnd.h" 76 77 #include <sys/param.h> 78 #include <sys/systm.h> 79 #include <sys/kernel.h> 80 #include <sys/conf.h> 81 #include <sys/file.h> 82 #include <sys/stat.h> 83 #include <sys/ioctl.h> 84 #include <sys/buf.h> 85 #include <sys/uio.h> 86 #include <sys/malloc.h> 87 #include <sys/device.h> 88 #include <sys/disklabel.h> 89 #include <sys/disk.h> 90 #include <sys/syslog.h> 91 #include <sys/proc.h> 92 #include <sys/vnode.h> 93 #if NRND > 0 94 #include <sys/rnd.h> 95 #endif 96 97 #include <machine/intr.h> 98 #include <machine/bus.h> 99 100 #include <dev/ata/atareg.h> 101 #include <dev/ata/atavar.h> 102 #include <dev/ata/wdvar.h> 103 #include <dev/ic/wdcreg.h> 104 #include <sys/ataio.h> 105 #include "locators.h" 106 107 #define LBA48_THRESHOLD (0xfffffff) /* 128GB / DEV_BSIZE */ 108 109 #define WDIORETRIES_SINGLE 4 /* number of retries before single-sector */ 110 #define WDIORETRIES 5 /* number of retries before giving up */ 111 #define RECOVERYTIME hz/2 /* time to wait before retrying a cmd */ 112 113 #define WDUNIT(dev) DISKUNIT(dev) 114 #define WDPART(dev) DISKPART(dev) 115 #define WDMINOR(unit, part) DISKMINOR(unit, part) 116 #define MAKEWDDEV(maj, unit, part) MAKEDISKDEV(maj, unit, part) 117 118 #define WDLABELDEV(dev) (MAKEWDDEV(major(dev), WDUNIT(dev), RAW_PART)) 119 120 #define DEBUG_INTR 0x01 121 #define DEBUG_XFERS 0x02 122 #define DEBUG_STATUS 0x04 123 #define DEBUG_FUNCS 0x08 124 #define DEBUG_PROBE 0x10 125 #ifdef WDCDEBUG 126 int wdcdebug_wd_mask = 0x0; 127 #define WDCDEBUG_PRINT(args, level) \ 128 if (wdcdebug_wd_mask & (level)) \ 129 printf args 130 #else 131 #define WDCDEBUG_PRINT(args, level) 132 #endif 133 134 int wdprobe(struct device *, struct cfdata *, void *); 135 void wdattach(struct device *, struct device *, void *); 136 int wddetach(struct device *, int); 137 int wdactivate(struct device *, enum devact); 138 int wdprint(void *, char *); 139 void wdperror(const struct wd_softc *); 140 141 CFATTACH_DECL(wd, sizeof(struct wd_softc), 142 wdprobe, wdattach, wddetach, wdactivate); 143 144 extern struct cfdriver wd_cd; 145 146 dev_type_open(wdopen); 147 dev_type_close(wdclose); 148 dev_type_read(wdread); 149 dev_type_write(wdwrite); 150 dev_type_ioctl(wdioctl); 151 dev_type_strategy(wdstrategy); 152 dev_type_dump(wddump); 153 dev_type_size(wdsize); 154 155 const struct bdevsw wd_bdevsw = { 156 wdopen, wdclose, wdstrategy, wdioctl, wddump, wdsize, D_DISK 157 }; 158 159 const struct cdevsw wd_cdevsw = { 160 wdopen, wdclose, wdread, wdwrite, wdioctl, 161 nostop, notty, nopoll, nommap, nokqfilter, D_DISK 162 }; 163 164 /* 165 * Glue necessary to hook WDCIOCCOMMAND into physio 166 */ 167 168 struct wd_ioctl { 169 LIST_ENTRY(wd_ioctl) wi_list; 170 struct buf wi_bp; 171 struct uio wi_uio; 172 struct iovec wi_iov; 173 atareq_t wi_atareq; 174 struct wd_softc *wi_softc; 175 }; 176 177 LIST_HEAD(, wd_ioctl) wi_head; 178 179 struct wd_ioctl *wi_find(struct buf *); 180 void wi_free(struct wd_ioctl *); 181 struct wd_ioctl *wi_get(void); 182 void wdioctlstrategy(struct buf *); 183 184 void wdgetdefaultlabel(struct wd_softc *, struct disklabel *); 185 void wdgetdisklabel(struct wd_softc *); 186 void wdstart(void *); 187 void __wdstart(struct wd_softc*, struct buf *); 188 void wdrestart(void *); 189 void wddone(void *); 190 int wd_get_params(struct wd_softc *, u_int8_t, struct ataparams *); 191 int wd_flushcache(struct wd_softc *, int); 192 void wd_shutdown(void *); 193 194 int wd_getcache(struct wd_softc *, int *); 195 int wd_setcache(struct wd_softc *, int); 196 197 struct dkdriver wddkdriver = { wdstrategy }; 198 199 #ifdef HAS_BAD144_HANDLING 200 static void bad144intern(struct wd_softc *); 201 #endif 202 203 #define WD_QUIRK_SPLIT_MOD15_WRITE 0x0001 /* must split certain writes */ 204 #define WD_QUIRK_FORCE_LBA48 0x0002 /* must use LBA48 commands */ 205 206 /* 207 * Quirk table for IDE drives. Put more-specific matches first, since 208 * a simple globbing routine is used for matching. 209 */ 210 static const struct wd_quirk { 211 const char *wdq_match; /* inquiry pattern to match */ 212 int wdq_quirks; /* drive quirks */ 213 } wd_quirk_table[] = { 214 /* 215 * Some Seagate S-ATA drives have a PHY which can get confused 216 * with the way data is packetized by some S-ATA controllers. 217 * 218 * The work-around is to split in two any write transfer whose 219 * sector count % 15 == 1 (assuming 512 byte sectors). 220 * 221 * XXX This is an incomplete list. There are at least a couple 222 * XXX more model numbers. If you have trouble with such transfers 223 * XXX (8K is the most common) on Seagate S-ATA drives, please 224 * XXX notify thorpej (at) NetBSD.org. 225 */ 226 { "ST3120023AS", 227 WD_QUIRK_SPLIT_MOD15_WRITE }, 228 { "ST380023AS", 229 WD_QUIRK_SPLIT_MOD15_WRITE }, 230 231 /* 232 * This seagate drive seems to have issue addressing sector 0xfffffff 233 * (aka LBA48_THRESHOLD) in LBA mode. The workaround is to force 234 * LBA48 235 */ 236 { "ST3160812A*", 237 WD_QUIRK_FORCE_LBA48 }, 238 { "ST3160023A*", 239 WD_QUIRK_FORCE_LBA48 }, 240 { "ST3160827A*", 241 WD_QUIRK_FORCE_LBA48 }, 242 /* Attempt to catch all seagate drives larger than 200GB */ 243 { "ST3[2-9][0-9][0-9][0-9][0-9][0-9][A-Z]*", 244 WD_QUIRK_FORCE_LBA48 }, 245 { NULL, 246 0 } 247 }; 248 249 static const struct wd_quirk * 250 wd_lookup_quirks(const char *name) 251 { 252 const struct wd_quirk *wdq; 253 const char *estr; 254 255 for (wdq = wd_quirk_table; wdq->wdq_match != NULL; wdq++) { 256 /* 257 * We only want exact matches (which include matches 258 * against globbing characters). 259 */ 260 if (pmatch(name, wdq->wdq_match, &estr) == 2) 261 return (wdq); 262 } 263 return (NULL); 264 } 265 266 int 267 wdprobe(struct device *parent, struct cfdata *match, void *aux) 268 { 269 struct ata_device *adev = aux; 270 271 if (adev == NULL) 272 return 0; 273 if (adev->adev_bustype->bustype_type != SCSIPI_BUSTYPE_ATA) 274 return 0; 275 276 if (match->cf_loc[ATA_HLCF_DRIVE] != ATA_HLCF_DRIVE_DEFAULT && 277 match->cf_loc[ATA_HLCF_DRIVE] != adev->adev_drv_data->drive) 278 return 0; 279 return 1; 280 } 281 282 void 283 wdattach(struct device *parent, struct device *self, void *aux) 284 { 285 struct wd_softc *wd = (void *)self; 286 struct ata_device *adev= aux; 287 int i, blank; 288 char buf[41], pbuf[9], c, *p, *q; 289 const struct wd_quirk *wdq; 290 WDCDEBUG_PRINT(("wdattach\n"), DEBUG_FUNCS | DEBUG_PROBE); 291 292 lockinit(&wd->sc_lock, PRIBIO | PCATCH, "wdlock", 0, 0); 293 294 callout_init(&wd->sc_restart_ch); 295 bufq_alloc(&wd->sc_q, BUFQ_DISK_DEFAULT_STRAT()|BUFQ_SORT_RAWBLOCK); 296 SLIST_INIT(&wd->sc_bslist); 297 298 wd->atabus = adev->adev_bustype; 299 wd->openings = adev->adev_openings; 300 wd->drvp = adev->adev_drv_data; 301 302 wd->drvp->drv_done = wddone; 303 wd->drvp->drv_softc = &wd->sc_dev; 304 305 aprint_naive("\n"); 306 307 /* read our drive info */ 308 if (wd_get_params(wd, AT_WAIT, &wd->sc_params) != 0) { 309 aprint_error("\n%s: IDENTIFY failed\n", wd->sc_dev.dv_xname); 310 return; 311 } 312 313 for (blank = 0, p = wd->sc_params.atap_model, q = buf, i = 0; 314 i < sizeof(wd->sc_params.atap_model); i++) { 315 c = *p++; 316 if (c == '\0') 317 break; 318 if (c != ' ') { 319 if (blank) { 320 *q++ = ' '; 321 blank = 0; 322 } 323 *q++ = c; 324 } else 325 blank = 1; 326 } 327 *q++ = '\0'; 328 329 aprint_normal(": <%s>\n", buf); 330 331 wdq = wd_lookup_quirks(buf); 332 if (wdq != NULL) 333 wd->sc_quirks = wdq->wdq_quirks; 334 335 if ((wd->sc_params.atap_multi & 0xff) > 1) { 336 wd->sc_multi = wd->sc_params.atap_multi & 0xff; 337 } else { 338 wd->sc_multi = 1; 339 } 340 341 aprint_normal("%s: drive supports %d-sector PIO transfers,", 342 wd->sc_dev.dv_xname, wd->sc_multi); 343 344 /* 48-bit LBA addressing */ 345 if ((wd->sc_params.atap_cmd2_en & ATA_CMD2_LBA48) != 0) 346 wd->sc_flags |= WDF_LBA48; 347 348 /* Prior to ATA-4, LBA was optional. */ 349 if ((wd->sc_params.atap_capabilities1 & WDC_CAP_LBA) != 0) 350 wd->sc_flags |= WDF_LBA; 351 #if 0 352 /* ATA-4 requires LBA. */ 353 if (wd->sc_params.atap_ataversion != 0xffff && 354 wd->sc_params.atap_ataversion >= WDC_VER_ATA4) 355 wd->sc_flags |= WDF_LBA; 356 #endif 357 358 if ((wd->sc_flags & WDF_LBA48) != 0) { 359 aprint_normal(" LBA48 addressing\n"); 360 wd->sc_capacity = 361 ((u_int64_t) wd->sc_params.__reserved6[11] << 48) | 362 ((u_int64_t) wd->sc_params.__reserved6[10] << 32) | 363 ((u_int64_t) wd->sc_params.__reserved6[9] << 16) | 364 ((u_int64_t) wd->sc_params.__reserved6[8] << 0); 365 } else if ((wd->sc_flags & WDF_LBA) != 0) { 366 aprint_normal(" LBA addressing\n"); 367 wd->sc_capacity = 368 (wd->sc_params.atap_capacity[1] << 16) | 369 wd->sc_params.atap_capacity[0]; 370 } else { 371 aprint_normal(" chs addressing\n"); 372 wd->sc_capacity = 373 wd->sc_params.atap_cylinders * 374 wd->sc_params.atap_heads * 375 wd->sc_params.atap_sectors; 376 } 377 format_bytes(pbuf, sizeof(pbuf), wd->sc_capacity * DEV_BSIZE); 378 aprint_normal("%s: %s, %d cyl, %d head, %d sec, " 379 "%d bytes/sect x %llu sectors\n", 380 self->dv_xname, pbuf, 381 (wd->sc_flags & WDF_LBA) ? (int)(wd->sc_capacity / 382 (wd->sc_params.atap_heads * wd->sc_params.atap_sectors)) : 383 wd->sc_params.atap_cylinders, 384 wd->sc_params.atap_heads, wd->sc_params.atap_sectors, 385 DEV_BSIZE, (unsigned long long)wd->sc_capacity); 386 387 WDCDEBUG_PRINT(("%s: atap_dmatiming_mimi=%d, atap_dmatiming_recom=%d\n", 388 self->dv_xname, wd->sc_params.atap_dmatiming_mimi, 389 wd->sc_params.atap_dmatiming_recom), DEBUG_PROBE); 390 /* 391 * Initialize and attach the disk structure. 392 */ 393 wd->sc_dk.dk_driver = &wddkdriver; 394 wd->sc_dk.dk_name = wd->sc_dev.dv_xname; 395 disk_attach(&wd->sc_dk); 396 wd->sc_wdc_bio.lp = wd->sc_dk.dk_label; 397 wd->sc_sdhook = shutdownhook_establish(wd_shutdown, wd); 398 if (wd->sc_sdhook == NULL) 399 aprint_error("%s: WARNING: unable to establish shutdown hook\n", 400 wd->sc_dev.dv_xname); 401 #if NRND > 0 402 rnd_attach_source(&wd->rnd_source, wd->sc_dev.dv_xname, 403 RND_TYPE_DISK, 0); 404 #endif 405 } 406 407 int 408 wdactivate(struct device *self, enum devact act) 409 { 410 int rv = 0; 411 412 switch (act) { 413 case DVACT_ACTIVATE: 414 rv = EOPNOTSUPP; 415 break; 416 417 case DVACT_DEACTIVATE: 418 /* 419 * Nothing to do; we key off the device's DVF_ACTIVATE. 420 */ 421 break; 422 } 423 return (rv); 424 } 425 426 int 427 wddetach(struct device *self, int flags) 428 { 429 struct wd_softc *sc = (struct wd_softc *)self; 430 struct buf *bp; 431 int s, bmaj, cmaj, i, mn; 432 433 /* locate the major number */ 434 bmaj = bdevsw_lookup_major(&wd_bdevsw); 435 cmaj = cdevsw_lookup_major(&wd_cdevsw); 436 437 s = splbio(); 438 439 /* Kill off any queued buffers. */ 440 while ((bp = BUFQ_GET(&sc->sc_q)) != NULL) { 441 bp->b_error = EIO; 442 bp->b_flags |= B_ERROR; 443 bp->b_resid = bp->b_bcount; 444 biodone(bp); 445 } 446 447 bufq_free(&sc->sc_q); 448 449 splx(s); 450 451 /* Nuke the vnodes for any open instances. */ 452 for (i = 0; i < MAXPARTITIONS; i++) { 453 mn = WDMINOR(self->dv_unit, i); 454 vdevgone(bmaj, mn, mn, VBLK); 455 vdevgone(cmaj, mn, mn, VCHR); 456 } 457 458 /* Detach disk. */ 459 disk_detach(&sc->sc_dk); 460 461 /* Clean out the bad sector list */ 462 while (!SLIST_EMPTY(&sc->sc_bslist)) { 463 void *head = SLIST_FIRST(&sc->sc_bslist); 464 SLIST_REMOVE_HEAD(&sc->sc_bslist, dbs_next); 465 free(head, M_TEMP); 466 } 467 sc->sc_bscount = 0; 468 469 /* Get rid of the shutdown hook. */ 470 if (sc->sc_sdhook != NULL) 471 shutdownhook_disestablish(sc->sc_sdhook); 472 473 #if NRND > 0 474 /* Unhook the entropy source. */ 475 rnd_detach_source(&sc->rnd_source); 476 #endif 477 478 lockmgr(&sc->sc_lock, LK_DRAIN, NULL); 479 480 return (0); 481 } 482 483 /* 484 * Read/write routine for a buffer. Validates the arguments and schedules the 485 * transfer. Does not wait for the transfer to complete. 486 */ 487 void 488 wdstrategy(struct buf *bp) 489 { 490 struct wd_softc *wd = device_lookup(&wd_cd, WDUNIT(bp->b_dev)); 491 struct disklabel *lp = wd->sc_dk.dk_label; 492 daddr_t blkno; 493 int s; 494 495 WDCDEBUG_PRINT(("wdstrategy (%s)\n", wd->sc_dev.dv_xname), 496 DEBUG_XFERS); 497 498 /* Valid request? */ 499 if (bp->b_blkno < 0 || 500 (bp->b_bcount % lp->d_secsize) != 0 || 501 (bp->b_bcount / lp->d_secsize) >= (1 << NBBY)) { 502 bp->b_error = EINVAL; 503 goto bad; 504 } 505 506 /* If device invalidated (e.g. media change, door open), error. */ 507 if ((wd->sc_flags & WDF_LOADED) == 0) { 508 bp->b_error = EIO; 509 goto bad; 510 } 511 512 /* If it's a null transfer, return immediately. */ 513 if (bp->b_bcount == 0) 514 goto done; 515 516 /* 517 * Do bounds checking, adjust transfer. if error, process. 518 * If end of partition, just return. 519 */ 520 if (WDPART(bp->b_dev) == RAW_PART) { 521 if (bounds_check_with_mediasize(bp, DEV_BSIZE, 522 wd->sc_capacity) <= 0) 523 goto done; 524 } else { 525 if (bounds_check_with_label(&wd->sc_dk, bp, 526 (wd->sc_flags & (WDF_WLABEL|WDF_LABELLING)) != 0) <= 0) 527 goto done; 528 } 529 530 /* 531 * Now convert the block number to absolute and put it in 532 * terms of the device's logical block size. 533 */ 534 if (lp->d_secsize >= DEV_BSIZE) 535 blkno = bp->b_blkno / (lp->d_secsize / DEV_BSIZE); 536 else 537 blkno = bp->b_blkno * (DEV_BSIZE / lp->d_secsize); 538 539 if (WDPART(bp->b_dev) != RAW_PART) 540 blkno += lp->d_partitions[WDPART(bp->b_dev)].p_offset; 541 542 bp->b_rawblkno = blkno; 543 544 /* 545 * If the transfer about to be attempted contains only a block that 546 * is known to be bad then return an error for the transfer without 547 * even attempting to start a transfer up under the premis that we 548 * will just end up doing more retries for a transfer that will end 549 * up failing again. 550 * XXX:SMP - mutex required to protect with DIOCBSFLUSH 551 */ 552 if (__predict_false(!SLIST_EMPTY(&wd->sc_bslist))) { 553 struct disk_badsectors *dbs; 554 daddr_t maxblk = blkno + (bp->b_bcount >> DEV_BSHIFT) - 1; 555 556 SLIST_FOREACH(dbs, &wd->sc_bslist, dbs_next) 557 if ((dbs->dbs_min <= blkno && blkno <= dbs->dbs_max) || 558 (dbs->dbs_min <= maxblk && maxblk <= dbs->dbs_max)){ 559 bp->b_error = EIO; 560 goto bad; 561 } 562 } 563 564 /* Queue transfer on drive, activate drive and controller if idle. */ 565 s = splbio(); 566 BUFQ_PUT(&wd->sc_q, bp); 567 wdstart(wd); 568 splx(s); 569 return; 570 bad: 571 bp->b_flags |= B_ERROR; 572 done: 573 /* Toss transfer; we're done early. */ 574 bp->b_resid = bp->b_bcount; 575 biodone(bp); 576 } 577 578 /* 579 * Queue a drive for I/O. 580 */ 581 void 582 wdstart(void *arg) 583 { 584 struct wd_softc *wd = arg; 585 struct buf *bp = NULL; 586 587 WDCDEBUG_PRINT(("wdstart %s\n", wd->sc_dev.dv_xname), 588 DEBUG_XFERS); 589 while (wd->openings > 0) { 590 591 /* Is there a buf for us ? */ 592 if ((bp = BUFQ_GET(&wd->sc_q)) == NULL) 593 return; 594 595 /* 596 * Make the command. First lock the device 597 */ 598 wd->openings--; 599 600 wd->retries = 0; 601 __wdstart(wd, bp); 602 } 603 } 604 605 static void 606 wd_split_mod15_write(struct buf *bp) 607 { 608 struct buf *obp = bp->b_private; 609 struct wd_softc *sc = wd_cd.cd_devs[DISKUNIT(obp->b_dev)]; 610 611 if (__predict_false(bp->b_flags & B_ERROR) != 0) { 612 /* 613 * Propagate the error. If this was the first half of 614 * the original transfer, make sure to account for that 615 * in the residual. 616 */ 617 if (bp->b_data == obp->b_data) 618 bp->b_resid += bp->b_bcount; 619 goto done; 620 } 621 622 /* 623 * If this was the second half of the transfer, we're all done! 624 */ 625 if (bp->b_data != obp->b_data) 626 goto done; 627 628 /* 629 * Advance the pointer to the second half and issue that command 630 * using the same opening. 631 */ 632 bp->b_flags = obp->b_flags | B_CALL; 633 bp->b_data += bp->b_bcount; 634 bp->b_blkno += (bp->b_bcount / 512); 635 bp->b_rawblkno += (bp->b_bcount / 512); 636 __wdstart(sc, bp); 637 return; 638 639 done: 640 obp->b_flags |= (bp->b_flags & (B_EINTR|B_ERROR)); 641 obp->b_error = bp->b_error; 642 obp->b_resid = bp->b_resid; 643 pool_put(&bufpool, bp); 644 biodone(obp); 645 sc->openings++; 646 /* wddone() will call wdstart() */ 647 } 648 649 void 650 __wdstart(struct wd_softc *wd, struct buf *bp) 651 { 652 653 /* 654 * Deal with the "split mod15 write" quirk. We just divide the 655 * transfer in two, doing the first half and then then second half 656 * with the same command opening. 657 * 658 * Note we MUST do this here, because we can't let insertion 659 * into the bufq cause the transfers to be re-merged. 660 */ 661 if (__predict_false((wd->sc_quirks & WD_QUIRK_SPLIT_MOD15_WRITE) != 0 && 662 (bp->b_flags & B_READ) == 0 && 663 bp->b_bcount > 512 && 664 ((bp->b_bcount / 512) % 15) == 1)) { 665 struct buf *nbp; 666 667 /* already at splbio */ 668 nbp = pool_get(&bufpool, PR_NOWAIT); 669 if (__predict_false(nbp == NULL)) { 670 /* No memory -- fail the iop. */ 671 bp->b_error = ENOMEM; 672 bp->b_flags |= B_ERROR; 673 bp->b_resid = bp->b_bcount; 674 biodone(bp); 675 wd->openings++; 676 return; 677 } 678 679 BUF_INIT(nbp); 680 nbp->b_error = 0; 681 nbp->b_proc = bp->b_proc; 682 nbp->b_vp = NULLVP; 683 nbp->b_dev = bp->b_dev; 684 685 nbp->b_bcount = bp->b_bcount / 2; 686 nbp->b_bufsize = bp->b_bcount / 2; 687 nbp->b_data = bp->b_data; 688 689 nbp->b_blkno = bp->b_blkno; 690 nbp->b_rawblkno = bp->b_rawblkno; 691 692 nbp->b_flags = bp->b_flags | B_CALL; 693 nbp->b_iodone = wd_split_mod15_write; 694 695 /* Put ptr to orig buf in b_private and use new buf */ 696 nbp->b_private = bp; 697 698 BIO_COPYPRIO(nbp, bp); 699 700 bp = nbp; 701 } 702 703 wd->sc_wdc_bio.blkno = bp->b_rawblkno; 704 wd->sc_wdc_bio.blkdone =0; 705 wd->sc_bp = bp; 706 /* 707 * If we're retrying, retry in single-sector mode. This will give us 708 * the sector number of the problem, and will eventually allow the 709 * transfer to succeed. 710 */ 711 if (wd->retries >= WDIORETRIES_SINGLE) 712 wd->sc_wdc_bio.flags = ATA_SINGLE; 713 else 714 wd->sc_wdc_bio.flags = 0; 715 if (wd->sc_flags & WDF_LBA48 && 716 (wd->sc_wdc_bio.blkno > LBA48_THRESHOLD || 717 (wd->sc_quirks & WD_QUIRK_FORCE_LBA48) != 0)) 718 wd->sc_wdc_bio.flags |= ATA_LBA48; 719 if (wd->sc_flags & WDF_LBA) 720 wd->sc_wdc_bio.flags |= ATA_LBA; 721 if (bp->b_flags & B_READ) 722 wd->sc_wdc_bio.flags |= ATA_READ; 723 wd->sc_wdc_bio.bcount = bp->b_bcount; 724 wd->sc_wdc_bio.databuf = bp->b_data; 725 /* Instrumentation. */ 726 disk_busy(&wd->sc_dk); 727 switch (wd->atabus->ata_bio(wd->drvp, &wd->sc_wdc_bio)) { 728 case WDC_TRY_AGAIN: 729 callout_reset(&wd->sc_restart_ch, hz, wdrestart, wd); 730 break; 731 case WDC_QUEUED: 732 case WDC_COMPLETE: 733 break; 734 default: 735 panic("__wdstart: bad return code from ata_bio()"); 736 } 737 } 738 739 void 740 wddone(void *v) 741 { 742 struct wd_softc *wd = v; 743 struct buf *bp = wd->sc_bp; 744 const char *errmsg; 745 int do_perror = 0; 746 WDCDEBUG_PRINT(("wddone %s\n", wd->sc_dev.dv_xname), 747 DEBUG_XFERS); 748 749 if (bp == NULL) 750 return; 751 bp->b_resid = wd->sc_wdc_bio.bcount; 752 switch (wd->sc_wdc_bio.error) { 753 case ERR_DMA: 754 errmsg = "DMA error"; 755 goto retry; 756 case ERR_DF: 757 errmsg = "device fault"; 758 goto retry; 759 case TIMEOUT: 760 errmsg = "device timeout"; 761 goto retry; 762 case ERR_RESET: 763 errmsg = "channel reset"; 764 goto retry2; 765 case ERROR: 766 /* Don't care about media change bits */ 767 if (wd->sc_wdc_bio.r_error != 0 && 768 (wd->sc_wdc_bio.r_error & ~(WDCE_MC | WDCE_MCR)) == 0) 769 goto noerror; 770 errmsg = "error"; 771 do_perror = 1; 772 retry: /* Just reset and retry. Can we do more ? */ 773 wd->atabus->ata_reset_channel(wd->drvp, AT_RST_NOCMD); 774 retry2: 775 diskerr(bp, "wd", errmsg, LOG_PRINTF, 776 wd->sc_wdc_bio.blkdone, wd->sc_dk.dk_label); 777 if (wd->retries < WDIORETRIES) 778 printf(", retrying\n"); 779 if (do_perror) 780 wdperror(wd); 781 if (wd->retries < WDIORETRIES) { 782 wd->retries++; 783 callout_reset(&wd->sc_restart_ch, RECOVERYTIME, 784 wdrestart, wd); 785 return; 786 } 787 printf("\n"); 788 789 /* 790 * Not all errors indicate a failed block but those that do, 791 * put the block on the bad-block list for the device. Only 792 * do this for reads because the drive should do it for writes, 793 * itself, according to Manuel. 794 */ 795 if ((bp->b_flags & B_READ) && 796 ((wd->drvp->ata_vers >= 4 && wd->sc_wdc_bio.r_error & 64) || 797 (wd->drvp->ata_vers < 4 && wd->sc_wdc_bio.r_error & 192))) { 798 struct disk_badsectors *dbs; 799 800 dbs = malloc(sizeof *dbs, M_TEMP, M_WAITOK); 801 dbs->dbs_min = bp->b_rawblkno; 802 dbs->dbs_max = dbs->dbs_min + (bp->b_bcount >> DEV_BSHIFT) - 1; 803 microtime(&dbs->dbs_failedat); 804 SLIST_INSERT_HEAD(&wd->sc_bslist, dbs, dbs_next); 805 wd->sc_bscount++; 806 } 807 808 bp->b_flags |= B_ERROR; 809 bp->b_error = EIO; 810 break; 811 case NOERROR: 812 noerror: if ((wd->sc_wdc_bio.flags & ATA_CORR) || wd->retries > 0) 813 printf("%s: soft error (corrected)\n", 814 wd->sc_dev.dv_xname); 815 break; 816 case ERR_NODEV: 817 bp->b_flags |= B_ERROR; 818 bp->b_error = EIO; 819 break; 820 } 821 disk_unbusy(&wd->sc_dk, (bp->b_bcount - bp->b_resid), 822 (bp->b_flags & B_READ)); 823 #if NRND > 0 824 rnd_add_uint32(&wd->rnd_source, bp->b_blkno); 825 #endif 826 /* XXX Yuck, but we don't want to increment openings in this case */ 827 if (__predict_false((bp->b_flags & B_CALL) != 0 && 828 bp->b_iodone == wd_split_mod15_write)) 829 biodone(bp); 830 else { 831 biodone(bp); 832 wd->openings++; 833 } 834 wdstart(wd); 835 } 836 837 void 838 wdrestart(void *v) 839 { 840 struct wd_softc *wd = v; 841 struct buf *bp = wd->sc_bp; 842 int s; 843 WDCDEBUG_PRINT(("wdrestart %s\n", wd->sc_dev.dv_xname), 844 DEBUG_XFERS); 845 846 s = splbio(); 847 __wdstart(v, bp); 848 splx(s); 849 } 850 851 int 852 wdread(dev_t dev, struct uio *uio, int flags) 853 { 854 855 WDCDEBUG_PRINT(("wdread\n"), DEBUG_XFERS); 856 return (physio(wdstrategy, NULL, dev, B_READ, minphys, uio)); 857 } 858 859 int 860 wdwrite(dev_t dev, struct uio *uio, int flags) 861 { 862 863 WDCDEBUG_PRINT(("wdwrite\n"), DEBUG_XFERS); 864 return (physio(wdstrategy, NULL, dev, B_WRITE, minphys, uio)); 865 } 866 867 int 868 wdopen(dev_t dev, int flag, int fmt, struct proc *p) 869 { 870 struct wd_softc *wd; 871 int part, error; 872 873 WDCDEBUG_PRINT(("wdopen\n"), DEBUG_FUNCS); 874 wd = device_lookup(&wd_cd, WDUNIT(dev)); 875 if (wd == NULL) 876 return (ENXIO); 877 878 if ((wd->sc_dev.dv_flags & DVF_ACTIVE) == 0) 879 return (ENODEV); 880 881 /* 882 * If this is the first open of this device, add a reference 883 * to the adapter. 884 */ 885 if (wd->sc_dk.dk_openmask == 0 && 886 (error = wd->atabus->ata_addref(wd->drvp)) != 0) 887 return (error); 888 889 if ((error = lockmgr(&wd->sc_lock, LK_EXCLUSIVE, NULL)) != 0) 890 goto bad4; 891 892 if (wd->sc_dk.dk_openmask != 0) { 893 /* 894 * If any partition is open, but the disk has been invalidated, 895 * disallow further opens. 896 */ 897 if ((wd->sc_flags & WDF_LOADED) == 0) { 898 error = EIO; 899 goto bad3; 900 } 901 } else { 902 if ((wd->sc_flags & WDF_LOADED) == 0) { 903 wd->sc_flags |= WDF_LOADED; 904 905 /* Load the physical device parameters. */ 906 wd_get_params(wd, AT_WAIT, &wd->sc_params); 907 908 /* Load the partition info if not already loaded. */ 909 wdgetdisklabel(wd); 910 } 911 } 912 913 part = WDPART(dev); 914 915 /* Check that the partition exists. */ 916 if (part != RAW_PART && 917 (part >= wd->sc_dk.dk_label->d_npartitions || 918 wd->sc_dk.dk_label->d_partitions[part].p_fstype == FS_UNUSED)) { 919 error = ENXIO; 920 goto bad; 921 } 922 923 /* Insure only one open at a time. */ 924 switch (fmt) { 925 case S_IFCHR: 926 wd->sc_dk.dk_copenmask |= (1 << part); 927 break; 928 case S_IFBLK: 929 wd->sc_dk.dk_bopenmask |= (1 << part); 930 break; 931 } 932 wd->sc_dk.dk_openmask = 933 wd->sc_dk.dk_copenmask | wd->sc_dk.dk_bopenmask; 934 935 lockmgr(&wd->sc_lock, LK_RELEASE, NULL); 936 return 0; 937 938 bad: 939 if (wd->sc_dk.dk_openmask == 0) { 940 } 941 942 bad3: 943 lockmgr(&wd->sc_lock, LK_RELEASE, NULL); 944 bad4: 945 if (wd->sc_dk.dk_openmask == 0) 946 wd->atabus->ata_delref(wd->drvp); 947 return error; 948 } 949 950 int 951 wdclose(dev_t dev, int flag, int fmt, struct proc *p) 952 { 953 struct wd_softc *wd = device_lookup(&wd_cd, WDUNIT(dev)); 954 int part = WDPART(dev); 955 int error; 956 957 WDCDEBUG_PRINT(("wdclose\n"), DEBUG_FUNCS); 958 if ((error = lockmgr(&wd->sc_lock, LK_EXCLUSIVE, NULL)) != 0) 959 return error; 960 961 switch (fmt) { 962 case S_IFCHR: 963 wd->sc_dk.dk_copenmask &= ~(1 << part); 964 break; 965 case S_IFBLK: 966 wd->sc_dk.dk_bopenmask &= ~(1 << part); 967 break; 968 } 969 wd->sc_dk.dk_openmask = 970 wd->sc_dk.dk_copenmask | wd->sc_dk.dk_bopenmask; 971 972 if (wd->sc_dk.dk_openmask == 0) { 973 wd_flushcache(wd, AT_WAIT); 974 /* XXXX Must wait for I/O to complete! */ 975 976 if (! (wd->sc_flags & WDF_KLABEL)) 977 wd->sc_flags &= ~WDF_LOADED; 978 979 wd->atabus->ata_delref(wd->drvp); 980 } 981 982 lockmgr(&wd->sc_lock, LK_RELEASE, NULL); 983 return 0; 984 } 985 986 void 987 wdgetdefaultlabel(struct wd_softc *wd, struct disklabel *lp) 988 { 989 990 WDCDEBUG_PRINT(("wdgetdefaultlabel\n"), DEBUG_FUNCS); 991 memset(lp, 0, sizeof(struct disklabel)); 992 993 lp->d_secsize = DEV_BSIZE; 994 lp->d_ntracks = wd->sc_params.atap_heads; 995 lp->d_nsectors = wd->sc_params.atap_sectors; 996 lp->d_ncylinders = (wd->sc_flags & WDF_LBA) ? wd->sc_capacity / 997 (wd->sc_params.atap_heads * wd->sc_params.atap_sectors) : 998 wd->sc_params.atap_cylinders; 999 lp->d_secpercyl = lp->d_ntracks * lp->d_nsectors; 1000 1001 if (strcmp(wd->sc_params.atap_model, "ST506") == 0) 1002 lp->d_type = DTYPE_ST506; 1003 else 1004 lp->d_type = DTYPE_ESDI; 1005 1006 strncpy(lp->d_typename, wd->sc_params.atap_model, 16); 1007 strncpy(lp->d_packname, "fictitious", 16); 1008 if (wd->sc_capacity > UINT32_MAX) 1009 lp->d_secperunit = UINT32_MAX; 1010 else 1011 lp->d_secperunit = wd->sc_capacity; 1012 lp->d_rpm = 3600; 1013 lp->d_interleave = 1; 1014 lp->d_flags = 0; 1015 1016 lp->d_partitions[RAW_PART].p_offset = 0; 1017 lp->d_partitions[RAW_PART].p_size = 1018 lp->d_secperunit * (lp->d_secsize / DEV_BSIZE); 1019 lp->d_partitions[RAW_PART].p_fstype = FS_UNUSED; 1020 lp->d_npartitions = RAW_PART + 1; 1021 1022 lp->d_magic = DISKMAGIC; 1023 lp->d_magic2 = DISKMAGIC; 1024 lp->d_checksum = dkcksum(lp); 1025 } 1026 1027 /* 1028 * Fabricate a default disk label, and try to read the correct one. 1029 */ 1030 void 1031 wdgetdisklabel(struct wd_softc *wd) 1032 { 1033 struct disklabel *lp = wd->sc_dk.dk_label; 1034 const char *errstring; 1035 1036 WDCDEBUG_PRINT(("wdgetdisklabel\n"), DEBUG_FUNCS); 1037 1038 memset(wd->sc_dk.dk_cpulabel, 0, sizeof(struct cpu_disklabel)); 1039 1040 wdgetdefaultlabel(wd, lp); 1041 1042 wd->sc_badsect[0] = -1; 1043 1044 if (wd->drvp->state > RESET) 1045 wd->drvp->drive_flags |= DRIVE_RESET; 1046 errstring = readdisklabel(MAKEWDDEV(0, wd->sc_dev.dv_unit, RAW_PART), 1047 wdstrategy, lp, wd->sc_dk.dk_cpulabel); 1048 if (errstring) { 1049 /* 1050 * This probably happened because the drive's default 1051 * geometry doesn't match the DOS geometry. We 1052 * assume the DOS geometry is now in the label and try 1053 * again. XXX This is a kluge. 1054 */ 1055 if (wd->drvp->state > RESET) 1056 wd->drvp->drive_flags |= DRIVE_RESET; 1057 errstring = readdisklabel(MAKEWDDEV(0, wd->sc_dev.dv_unit, 1058 RAW_PART), wdstrategy, lp, wd->sc_dk.dk_cpulabel); 1059 } 1060 if (errstring) { 1061 printf("%s: %s\n", wd->sc_dev.dv_xname, errstring); 1062 return; 1063 } 1064 1065 if (wd->drvp->state > RESET) 1066 wd->drvp->drive_flags |= DRIVE_RESET; 1067 #ifdef HAS_BAD144_HANDLING 1068 if ((lp->d_flags & D_BADSECT) != 0) 1069 bad144intern(wd); 1070 #endif 1071 } 1072 1073 void 1074 wdperror(const struct wd_softc *wd) 1075 { 1076 static const char *const errstr0_3[] = {"address mark not found", 1077 "track 0 not found", "aborted command", "media change requested", 1078 "id not found", "media changed", "uncorrectable data error", 1079 "bad block detected"}; 1080 static const char *const errstr4_5[] = { 1081 "obsolete (address mark not found)", 1082 "no media/write protected", "aborted command", 1083 "media change requested", "id not found", "media changed", 1084 "uncorrectable data error", "interface CRC error"}; 1085 const char *const *errstr; 1086 int i; 1087 char *sep = ""; 1088 1089 const char *devname = wd->sc_dev.dv_xname; 1090 struct ata_drive_datas *drvp = wd->drvp; 1091 int errno = wd->sc_wdc_bio.r_error; 1092 1093 if (drvp->ata_vers >= 4) 1094 errstr = errstr4_5; 1095 else 1096 errstr = errstr0_3; 1097 1098 printf("%s: (", devname); 1099 1100 if (errno == 0) 1101 printf("error not notified"); 1102 1103 for (i = 0; i < 8; i++) { 1104 if (errno & (1 << i)) { 1105 printf("%s%s", sep, errstr[i]); 1106 sep = ", "; 1107 } 1108 } 1109 printf(")\n"); 1110 } 1111 1112 int 1113 wdioctl(dev_t dev, u_long xfer, caddr_t addr, int flag, struct proc *p) 1114 { 1115 struct wd_softc *wd = device_lookup(&wd_cd, WDUNIT(dev)); 1116 int error = 0; 1117 #ifdef __HAVE_OLD_DISKLABEL 1118 struct disklabel *newlabel = NULL; 1119 #endif 1120 1121 WDCDEBUG_PRINT(("wdioctl\n"), DEBUG_FUNCS); 1122 1123 if ((wd->sc_flags & WDF_LOADED) == 0) 1124 return EIO; 1125 1126 switch (xfer) { 1127 #ifdef HAS_BAD144_HANDLING 1128 case DIOCSBAD: 1129 if ((flag & FWRITE) == 0) 1130 return EBADF; 1131 wd->sc_dk.dk_cpulabel->bad = *(struct dkbad *)addr; 1132 wd->sc_dk.dk_label->d_flags |= D_BADSECT; 1133 bad144intern(wd); 1134 return 0; 1135 #endif 1136 1137 case DIOCBSLIST : 1138 { 1139 u_int32_t count, missing, skip; 1140 struct disk_badsecinfo dbsi; 1141 struct disk_badsectors *dbs; 1142 size_t available; 1143 caddr_t laddr; 1144 1145 dbsi = *(struct disk_badsecinfo *)addr; 1146 missing = wd->sc_bscount; 1147 count = 0; 1148 available = dbsi.dbsi_bufsize; 1149 skip = dbsi.dbsi_skip; 1150 laddr = dbsi.dbsi_buffer; 1151 1152 /* 1153 * We start this loop with the expectation that all of the 1154 * entries will be missed and decrement this counter each 1155 * time we either skip over one (already copied out) or 1156 * we actually copy it back to user space. The structs 1157 * holding the bad sector information are copied directly 1158 * back to user space whilst the summary is returned via 1159 * the struct passed in via the ioctl. 1160 */ 1161 SLIST_FOREACH(dbs, &wd->sc_bslist, dbs_next) { 1162 if (skip > 0) { 1163 missing--; 1164 skip--; 1165 continue; 1166 } 1167 if (available < sizeof(*dbs)) 1168 break; 1169 available -= sizeof(*dbs); 1170 copyout(dbs, laddr, sizeof(*dbs)); 1171 laddr += sizeof(*dbs); 1172 missing--; 1173 count++; 1174 } 1175 dbsi.dbsi_left = missing; 1176 dbsi.dbsi_copied = count; 1177 *(struct disk_badsecinfo *)addr = dbsi; 1178 return 0; 1179 } 1180 1181 case DIOCBSFLUSH : 1182 /* Clean out the bad sector list */ 1183 while (!SLIST_EMPTY(&wd->sc_bslist)) { 1184 void *head = SLIST_FIRST(&wd->sc_bslist); 1185 SLIST_REMOVE_HEAD(&wd->sc_bslist, dbs_next); 1186 free(head, M_TEMP); 1187 } 1188 wd->sc_bscount = 0; 1189 return 0; 1190 1191 case DIOCGDINFO: 1192 *(struct disklabel *)addr = *(wd->sc_dk.dk_label); 1193 return 0; 1194 #ifdef __HAVE_OLD_DISKLABEL 1195 case ODIOCGDINFO: 1196 newlabel = malloc(sizeof *newlabel, M_TEMP, M_WAITOK); 1197 if (newlabel == NULL) 1198 return EIO; 1199 *newlabel = *(wd->sc_dk.dk_label); 1200 if (newlabel->d_npartitions <= OLDMAXPARTITIONS) 1201 memcpy(addr, newlabel, sizeof (struct olddisklabel)); 1202 else 1203 error = ENOTTY; 1204 free(newlabel, M_TEMP); 1205 return error; 1206 #endif 1207 1208 case DIOCGPART: 1209 ((struct partinfo *)addr)->disklab = wd->sc_dk.dk_label; 1210 ((struct partinfo *)addr)->part = 1211 &wd->sc_dk.dk_label->d_partitions[WDPART(dev)]; 1212 return 0; 1213 1214 case DIOCWDINFO: 1215 case DIOCSDINFO: 1216 #ifdef __HAVE_OLD_DISKLABEL 1217 case ODIOCWDINFO: 1218 case ODIOCSDINFO: 1219 #endif 1220 { 1221 struct disklabel *lp; 1222 1223 if ((flag & FWRITE) == 0) 1224 return EBADF; 1225 1226 #ifdef __HAVE_OLD_DISKLABEL 1227 if (xfer == ODIOCSDINFO || xfer == ODIOCWDINFO) { 1228 newlabel = malloc(sizeof *newlabel, M_TEMP, M_WAITOK); 1229 if (newlabel == NULL) 1230 return EIO; 1231 memset(newlabel, 0, sizeof newlabel); 1232 memcpy(newlabel, addr, sizeof (struct olddisklabel)); 1233 lp = newlabel; 1234 } else 1235 #endif 1236 lp = (struct disklabel *)addr; 1237 1238 if ((error = lockmgr(&wd->sc_lock, LK_EXCLUSIVE, NULL)) != 0) 1239 goto bad; 1240 wd->sc_flags |= WDF_LABELLING; 1241 1242 error = setdisklabel(wd->sc_dk.dk_label, 1243 lp, /*wd->sc_dk.dk_openmask : */0, 1244 wd->sc_dk.dk_cpulabel); 1245 if (error == 0) { 1246 if (wd->drvp->state > RESET) 1247 wd->drvp->drive_flags |= DRIVE_RESET; 1248 if (xfer == DIOCWDINFO 1249 #ifdef __HAVE_OLD_DISKLABEL 1250 || xfer == ODIOCWDINFO 1251 #endif 1252 ) 1253 error = writedisklabel(WDLABELDEV(dev), 1254 wdstrategy, wd->sc_dk.dk_label, 1255 wd->sc_dk.dk_cpulabel); 1256 } 1257 1258 wd->sc_flags &= ~WDF_LABELLING; 1259 lockmgr(&wd->sc_lock, LK_RELEASE, NULL); 1260 bad: 1261 #ifdef __HAVE_OLD_DISKLABEL 1262 if (newlabel != NULL) 1263 free(newlabel, M_TEMP); 1264 #endif 1265 return error; 1266 } 1267 1268 case DIOCKLABEL: 1269 if (*(int *)addr) 1270 wd->sc_flags |= WDF_KLABEL; 1271 else 1272 wd->sc_flags &= ~WDF_KLABEL; 1273 return 0; 1274 1275 case DIOCWLABEL: 1276 if ((flag & FWRITE) == 0) 1277 return EBADF; 1278 if (*(int *)addr) 1279 wd->sc_flags |= WDF_WLABEL; 1280 else 1281 wd->sc_flags &= ~WDF_WLABEL; 1282 return 0; 1283 1284 case DIOCGDEFLABEL: 1285 wdgetdefaultlabel(wd, (struct disklabel *)addr); 1286 return 0; 1287 #ifdef __HAVE_OLD_DISKLABEL 1288 case ODIOCGDEFLABEL: 1289 newlabel = malloc(sizeof *newlabel, M_TEMP, M_WAITOK); 1290 if (newlabel == NULL) 1291 return EIO; 1292 wdgetdefaultlabel(wd, newlabel); 1293 if (newlabel->d_npartitions <= OLDMAXPARTITIONS) 1294 memcpy(addr, &newlabel, sizeof (struct olddisklabel)); 1295 else 1296 error = ENOTTY; 1297 free(newlabel, M_TEMP); 1298 return error; 1299 #endif 1300 1301 #ifdef notyet 1302 case DIOCWFORMAT: 1303 if ((flag & FWRITE) == 0) 1304 return EBADF; 1305 { 1306 register struct format_op *fop; 1307 struct iovec aiov; 1308 struct uio auio; 1309 1310 fop = (struct format_op *)addr; 1311 aiov.iov_base = fop->df_buf; 1312 aiov.iov_len = fop->df_count; 1313 auio.uio_iov = &aiov; 1314 auio.uio_iovcnt = 1; 1315 auio.uio_resid = fop->df_count; 1316 auio.uio_segflg = 0; 1317 auio.uio_offset = 1318 fop->df_startblk * wd->sc_dk.dk_label->d_secsize; 1319 auio.uio_procp = p; 1320 error = physio(wdformat, NULL, dev, B_WRITE, minphys, 1321 &auio); 1322 fop->df_count -= auio.uio_resid; 1323 fop->df_reg[0] = wdc->sc_status; 1324 fop->df_reg[1] = wdc->sc_error; 1325 return error; 1326 } 1327 #endif 1328 case DIOCGCACHE: 1329 return wd_getcache(wd, (int *)addr); 1330 1331 case DIOCSCACHE: 1332 return wd_setcache(wd, *(int *)addr); 1333 1334 case DIOCCACHESYNC: 1335 return wd_flushcache(wd, AT_WAIT); 1336 1337 case ATAIOCCOMMAND: 1338 /* 1339 * Make sure this command is (relatively) safe first 1340 */ 1341 if ((((atareq_t *) addr)->flags & ATACMD_READ) == 0 && 1342 (flag & FWRITE) == 0) 1343 return (EBADF); 1344 { 1345 struct wd_ioctl *wi; 1346 atareq_t *atareq = (atareq_t *) addr; 1347 int error; 1348 1349 wi = wi_get(); 1350 wi->wi_softc = wd; 1351 wi->wi_atareq = *atareq; 1352 1353 if (atareq->datalen && atareq->flags & 1354 (ATACMD_READ | ATACMD_WRITE)) { 1355 wi->wi_iov.iov_base = atareq->databuf; 1356 wi->wi_iov.iov_len = atareq->datalen; 1357 wi->wi_uio.uio_iov = &wi->wi_iov; 1358 wi->wi_uio.uio_iovcnt = 1; 1359 wi->wi_uio.uio_resid = atareq->datalen; 1360 wi->wi_uio.uio_offset = 0; 1361 wi->wi_uio.uio_segflg = UIO_USERSPACE; 1362 wi->wi_uio.uio_rw = 1363 (atareq->flags & ATACMD_READ) ? B_READ : B_WRITE; 1364 wi->wi_uio.uio_procp = p; 1365 error = physio(wdioctlstrategy, &wi->wi_bp, dev, 1366 (atareq->flags & ATACMD_READ) ? B_READ : B_WRITE, 1367 minphys, &wi->wi_uio); 1368 } else { 1369 /* No need to call physio if we don't have any 1370 user data */ 1371 wi->wi_bp.b_flags = 0; 1372 wi->wi_bp.b_data = 0; 1373 wi->wi_bp.b_bcount = 0; 1374 wi->wi_bp.b_dev = 0; 1375 wi->wi_bp.b_proc = p; 1376 wdioctlstrategy(&wi->wi_bp); 1377 error = wi->wi_bp.b_error; 1378 } 1379 *atareq = wi->wi_atareq; 1380 wi_free(wi); 1381 return(error); 1382 } 1383 1384 default: 1385 return ENOTTY; 1386 } 1387 1388 #ifdef DIAGNOSTIC 1389 panic("wdioctl: impossible"); 1390 #endif 1391 } 1392 1393 #ifdef B_FORMAT 1394 int 1395 wdformat(struct buf *bp) 1396 { 1397 1398 bp->b_flags |= B_FORMAT; 1399 return wdstrategy(bp); 1400 } 1401 #endif 1402 1403 int 1404 wdsize(dev_t dev) 1405 { 1406 struct wd_softc *wd; 1407 int part, omask; 1408 int size; 1409 1410 WDCDEBUG_PRINT(("wdsize\n"), DEBUG_FUNCS); 1411 1412 wd = device_lookup(&wd_cd, WDUNIT(dev)); 1413 if (wd == NULL) 1414 return (-1); 1415 1416 part = WDPART(dev); 1417 omask = wd->sc_dk.dk_openmask & (1 << part); 1418 1419 if (omask == 0 && wdopen(dev, 0, S_IFBLK, NULL) != 0) 1420 return (-1); 1421 if (wd->sc_dk.dk_label->d_partitions[part].p_fstype != FS_SWAP) 1422 size = -1; 1423 else 1424 size = wd->sc_dk.dk_label->d_partitions[part].p_size * 1425 (wd->sc_dk.dk_label->d_secsize / DEV_BSIZE); 1426 if (omask == 0 && wdclose(dev, 0, S_IFBLK, NULL) != 0) 1427 return (-1); 1428 return (size); 1429 } 1430 1431 /* #define WD_DUMP_NOT_TRUSTED if you just want to watch */ 1432 static int wddoingadump = 0; 1433 static int wddumprecalibrated = 0; 1434 static int wddumpmulti = 1; 1435 1436 /* 1437 * Dump core after a system crash. 1438 */ 1439 int 1440 wddump(dev_t dev, daddr_t blkno, caddr_t va, size_t size) 1441 { 1442 struct wd_softc *wd; /* disk unit to do the I/O */ 1443 struct disklabel *lp; /* disk's disklabel */ 1444 int part, err; 1445 int nblks; /* total number of sectors left to write */ 1446 1447 /* Check if recursive dump; if so, punt. */ 1448 if (wddoingadump) 1449 return EFAULT; 1450 wddoingadump = 1; 1451 1452 wd = device_lookup(&wd_cd, WDUNIT(dev)); 1453 if (wd == NULL) 1454 return (ENXIO); 1455 1456 part = WDPART(dev); 1457 1458 /* Convert to disk sectors. Request must be a multiple of size. */ 1459 lp = wd->sc_dk.dk_label; 1460 if ((size % lp->d_secsize) != 0) 1461 return EFAULT; 1462 nblks = size / lp->d_secsize; 1463 blkno = blkno / (lp->d_secsize / DEV_BSIZE); 1464 1465 /* Check transfer bounds against partition size. */ 1466 if ((blkno < 0) || ((blkno + nblks) > lp->d_partitions[part].p_size)) 1467 return EINVAL; 1468 1469 /* Offset block number to start of partition. */ 1470 blkno += lp->d_partitions[part].p_offset; 1471 1472 /* Recalibrate, if first dump transfer. */ 1473 if (wddumprecalibrated == 0) { 1474 wddumpmulti = wd->sc_multi; 1475 wddumprecalibrated = 1; 1476 wd->atabus->ata_reset_channel(wd->drvp, AT_POLL | AT_RST_EMERG); 1477 wd->drvp->state = RESET; 1478 } 1479 1480 while (nblks > 0) { 1481 wd->sc_bp = NULL; 1482 wd->sc_wdc_bio.blkno = blkno; 1483 wd->sc_wdc_bio.flags = ATA_POLL; 1484 if (wd->sc_flags & WDF_LBA48 && 1485 (blkno > LBA48_THRESHOLD || 1486 (wd->sc_quirks & WD_QUIRK_FORCE_LBA48) != 0)) 1487 wd->sc_wdc_bio.flags |= ATA_LBA48; 1488 if (wd->sc_flags & WDF_LBA) 1489 wd->sc_wdc_bio.flags |= ATA_LBA; 1490 wd->sc_wdc_bio.bcount = 1491 min(nblks, wddumpmulti) * lp->d_secsize; 1492 wd->sc_wdc_bio.databuf = va; 1493 #ifndef WD_DUMP_NOT_TRUSTED 1494 switch (wd->atabus->ata_bio(wd->drvp, &wd->sc_wdc_bio)) { 1495 case WDC_TRY_AGAIN: 1496 panic("wddump: try again"); 1497 break; 1498 case WDC_QUEUED: 1499 panic("wddump: polled command has been queued"); 1500 break; 1501 case WDC_COMPLETE: 1502 break; 1503 } 1504 switch(wd->sc_wdc_bio.error) { 1505 case TIMEOUT: 1506 printf("wddump: device timed out"); 1507 err = EIO; 1508 break; 1509 case ERR_DF: 1510 printf("wddump: drive fault"); 1511 err = EIO; 1512 break; 1513 case ERR_DMA: 1514 printf("wddump: DMA error"); 1515 err = EIO; 1516 break; 1517 case ERROR: 1518 printf("wddump: "); 1519 wdperror(wd); 1520 err = EIO; 1521 break; 1522 case NOERROR: 1523 err = 0; 1524 break; 1525 default: 1526 panic("wddump: unknown error type"); 1527 } 1528 if (err != 0) { 1529 printf("\n"); 1530 return err; 1531 } 1532 #else /* WD_DUMP_NOT_TRUSTED */ 1533 /* Let's just talk about this first... */ 1534 printf("wd%d: dump addr 0x%x, cylin %d, head %d, sector %d\n", 1535 unit, va, cylin, head, sector); 1536 delay(500 * 1000); /* half a second */ 1537 #endif 1538 1539 /* update block count */ 1540 nblks -= min(nblks, wddumpmulti); 1541 blkno += min(nblks, wddumpmulti); 1542 va += min(nblks, wddumpmulti) * lp->d_secsize; 1543 } 1544 1545 wddoingadump = 0; 1546 return 0; 1547 } 1548 1549 #ifdef HAS_BAD144_HANDLING 1550 /* 1551 * Internalize the bad sector table. 1552 */ 1553 void 1554 bad144intern(struct wd_softc *wd) 1555 { 1556 struct dkbad *bt = &wd->sc_dk.dk_cpulabel->bad; 1557 struct disklabel *lp = wd->sc_dk.dk_label; 1558 int i = 0; 1559 1560 WDCDEBUG_PRINT(("bad144intern\n"), DEBUG_XFERS); 1561 1562 for (; i < NBT_BAD; i++) { 1563 if (bt->bt_bad[i].bt_cyl == 0xffff) 1564 break; 1565 wd->sc_badsect[i] = 1566 bt->bt_bad[i].bt_cyl * lp->d_secpercyl + 1567 (bt->bt_bad[i].bt_trksec >> 8) * lp->d_nsectors + 1568 (bt->bt_bad[i].bt_trksec & 0xff); 1569 } 1570 for (; i < NBT_BAD+1; i++) 1571 wd->sc_badsect[i] = -1; 1572 } 1573 #endif 1574 1575 int 1576 wd_get_params(struct wd_softc *wd, u_int8_t flags, struct ataparams *params) 1577 { 1578 switch (wd->atabus->ata_get_params(wd->drvp, flags, params)) { 1579 case CMD_AGAIN: 1580 return 1; 1581 case CMD_ERR: 1582 /* 1583 * We `know' there's a drive here; just assume it's old. 1584 * This geometry is only used to read the MBR and print a 1585 * (false) attach message. 1586 */ 1587 strncpy(params->atap_model, "ST506", 1588 sizeof params->atap_model); 1589 params->atap_config = ATA_CFG_FIXED; 1590 params->atap_cylinders = 1024; 1591 params->atap_heads = 8; 1592 params->atap_sectors = 17; 1593 params->atap_multi = 1; 1594 params->atap_capabilities1 = params->atap_capabilities2 = 0; 1595 wd->drvp->ata_vers = -1; /* Mark it as pre-ATA */ 1596 return 0; 1597 case CMD_OK: 1598 return 0; 1599 default: 1600 panic("wd_get_params: bad return code from ata_get_params"); 1601 /* NOTREACHED */ 1602 } 1603 } 1604 1605 int 1606 wd_getcache(struct wd_softc *wd, int *bitsp) 1607 { 1608 struct ataparams params; 1609 1610 if (wd_get_params(wd, AT_WAIT, ¶ms) != 0) 1611 return EIO; 1612 if (params.atap_cmd_set1 == 0x0000 || 1613 params.atap_cmd_set1 == 0xffff || 1614 (params.atap_cmd_set1 & WDC_CMD1_CACHE) == 0) { 1615 *bitsp = 0; 1616 return 0; 1617 } 1618 *bitsp = DKCACHE_WCHANGE | DKCACHE_READ; 1619 if (params.atap_cmd1_en & WDC_CMD1_CACHE) 1620 *bitsp |= DKCACHE_WRITE; 1621 1622 return 0; 1623 } 1624 1625 int 1626 wd_setcache(struct wd_softc *wd, int bits) 1627 { 1628 struct ataparams params; 1629 struct wdc_command wdc_c; 1630 1631 if (wd_get_params(wd, AT_WAIT, ¶ms) != 0) 1632 return EIO; 1633 1634 if (params.atap_cmd_set1 == 0x0000 || 1635 params.atap_cmd_set1 == 0xffff || 1636 (params.atap_cmd_set1 & WDC_CMD1_CACHE) == 0) 1637 return EOPNOTSUPP; 1638 1639 if ((bits & DKCACHE_READ) == 0 || 1640 (bits & DKCACHE_SAVE) != 0) 1641 return EOPNOTSUPP; 1642 1643 memset(&wdc_c, 0, sizeof(struct wdc_command)); 1644 wdc_c.r_command = SET_FEATURES; 1645 wdc_c.r_st_bmask = 0; 1646 wdc_c.r_st_pmask = 0; 1647 wdc_c.timeout = 30000; /* 30s timeout */ 1648 wdc_c.flags = AT_WAIT; 1649 if (bits & DKCACHE_WRITE) 1650 wdc_c.r_precomp = WDSF_WRITE_CACHE_EN; 1651 else 1652 wdc_c.r_precomp = WDSF_WRITE_CACHE_DS; 1653 if (wd->atabus->ata_exec_command(wd->drvp, &wdc_c) != WDC_COMPLETE) { 1654 printf("%s: wd_setcache command not complete\n", 1655 wd->sc_dev.dv_xname); 1656 return EIO; 1657 } 1658 if (wdc_c.flags & (AT_ERROR | AT_TIMEOU | AT_DF)) { 1659 printf("%s: wd_setcache command error 0x%x\n", 1660 wd->sc_dev.dv_xname, wdc_c.flags); 1661 return EIO; 1662 } 1663 if (wdc_c.flags & ERR_NODEV) 1664 return ENODEV; 1665 return 0; 1666 } 1667 1668 int 1669 wd_flushcache(struct wd_softc *wd, int flags) 1670 { 1671 struct wdc_command wdc_c; 1672 1673 /* 1674 * WDCC_FLUSHCACHE is here since ATA-4, but some drives report 1675 * only ATA-2 and still support it. 1676 */ 1677 if (wd->drvp->ata_vers < 4 && 1678 ((wd->sc_params.atap_cmd_set2 & WDC_CMD2_FC) == 0 || 1679 wd->sc_params.atap_cmd_set2 == 0xffff)) 1680 return ENODEV; 1681 memset(&wdc_c, 0, sizeof(struct wdc_command)); 1682 if ((wd->sc_params.atap_cmd2_en & ATA_CMD2_LBA48) != 0 && 1683 (wd->sc_params.atap_cmd2_en & ATA_CMD2_FCE) != 0) 1684 wdc_c.r_command = WDCC_FLUSHCACHE_EXT; 1685 else 1686 wdc_c.r_command = WDCC_FLUSHCACHE; 1687 wdc_c.r_st_bmask = WDCS_DRDY; 1688 wdc_c.r_st_pmask = WDCS_DRDY; 1689 wdc_c.flags = flags; 1690 wdc_c.timeout = 30000; /* 30s timeout */ 1691 if (wd->atabus->ata_exec_command(wd->drvp, &wdc_c) != WDC_COMPLETE) { 1692 printf("%s: flush cache command didn't complete\n", 1693 wd->sc_dev.dv_xname); 1694 return EIO; 1695 } 1696 if (wdc_c.flags & ERR_NODEV) 1697 return ENODEV; 1698 if (wdc_c.flags & AT_TIMEOU) { 1699 printf("%s: flush cache command timeout\n", 1700 wd->sc_dev.dv_xname); 1701 return EIO; 1702 } 1703 if (wdc_c.flags & AT_ERROR) { 1704 if (wdc_c.r_error == WDCE_ABRT) /* command not supported */ 1705 return ENODEV; 1706 printf("%s: flush cache command: error 0x%x\n", 1707 wd->sc_dev.dv_xname, wdc_c.r_error); 1708 return EIO; 1709 } 1710 if (wdc_c.flags & AT_DF) { 1711 printf("%s: flush cache command: drive fault\n", 1712 wd->sc_dev.dv_xname); 1713 return EIO; 1714 } 1715 return 0; 1716 } 1717 1718 void 1719 wd_shutdown(void *arg) 1720 { 1721 struct wd_softc *wd = arg; 1722 wd_flushcache(wd, AT_POLL); 1723 } 1724 1725 /* 1726 * Allocate space for a ioctl queue structure. Mostly taken from 1727 * scsipi_ioctl.c 1728 */ 1729 struct wd_ioctl * 1730 wi_get(void) 1731 { 1732 struct wd_ioctl *wi; 1733 int s; 1734 1735 wi = malloc(sizeof(struct wd_ioctl), M_TEMP, M_WAITOK|M_ZERO); 1736 simple_lock_init(&wi->wi_bp.b_interlock); 1737 s = splbio(); 1738 LIST_INSERT_HEAD(&wi_head, wi, wi_list); 1739 splx(s); 1740 return (wi); 1741 } 1742 1743 /* 1744 * Free an ioctl structure and remove it from our list 1745 */ 1746 1747 void 1748 wi_free(struct wd_ioctl *wi) 1749 { 1750 int s; 1751 1752 s = splbio(); 1753 LIST_REMOVE(wi, wi_list); 1754 splx(s); 1755 free(wi, M_TEMP); 1756 } 1757 1758 /* 1759 * Find a wd_ioctl structure based on the struct buf. 1760 */ 1761 1762 struct wd_ioctl * 1763 wi_find(struct buf *bp) 1764 { 1765 struct wd_ioctl *wi; 1766 int s; 1767 1768 s = splbio(); 1769 for (wi = wi_head.lh_first; wi != 0; wi = wi->wi_list.le_next) 1770 if (bp == &wi->wi_bp) 1771 break; 1772 splx(s); 1773 return (wi); 1774 } 1775 1776 /* 1777 * Ioctl pseudo strategy routine 1778 * 1779 * This is mostly stolen from scsipi_ioctl.c:scsistrategy(). What 1780 * happens here is: 1781 * 1782 * - wdioctl() queues a wd_ioctl structure. 1783 * 1784 * - wdioctl() calls physio/wdioctlstrategy based on whether or not 1785 * user space I/O is required. If physio() is called, physio() eventually 1786 * calls wdioctlstrategy(). 1787 * 1788 * - In either case, wdioctlstrategy() calls wd->atabus->ata_exec_command() 1789 * to perform the actual command 1790 * 1791 * The reason for the use of the pseudo strategy routine is because 1792 * when doing I/O to/from user space, physio _really_ wants to be in 1793 * the loop. We could put the entire buffer into the ioctl request 1794 * structure, but that won't scale if we want to do things like download 1795 * microcode. 1796 */ 1797 1798 void 1799 wdioctlstrategy(struct buf *bp) 1800 { 1801 struct wd_ioctl *wi; 1802 struct wdc_command wdc_c; 1803 int error = 0; 1804 1805 wi = wi_find(bp); 1806 if (wi == NULL) { 1807 printf("user_strat: No ioctl\n"); 1808 error = EINVAL; 1809 goto bad; 1810 } 1811 1812 memset(&wdc_c, 0, sizeof(wdc_c)); 1813 1814 /* 1815 * Abort if physio broke up the transfer 1816 */ 1817 1818 if (bp->b_bcount != wi->wi_atareq.datalen) { 1819 printf("physio split wd ioctl request... cannot proceed\n"); 1820 error = EIO; 1821 goto bad; 1822 } 1823 1824 /* 1825 * Abort if we didn't get a buffer size that was a multiple of 1826 * our sector size (or was larger than NBBY) 1827 */ 1828 1829 if ((bp->b_bcount % wi->wi_softc->sc_dk.dk_label->d_secsize) != 0 || 1830 (bp->b_bcount / wi->wi_softc->sc_dk.dk_label->d_secsize) >= 1831 (1 << NBBY)) { 1832 error = EINVAL; 1833 goto bad; 1834 } 1835 1836 /* 1837 * Make sure a timeout was supplied in the ioctl request 1838 */ 1839 1840 if (wi->wi_atareq.timeout == 0) { 1841 error = EINVAL; 1842 goto bad; 1843 } 1844 1845 if (wi->wi_atareq.flags & ATACMD_READ) 1846 wdc_c.flags |= AT_READ; 1847 else if (wi->wi_atareq.flags & ATACMD_WRITE) 1848 wdc_c.flags |= AT_WRITE; 1849 1850 if (wi->wi_atareq.flags & ATACMD_READREG) 1851 wdc_c.flags |= AT_READREG; 1852 1853 wdc_c.flags |= AT_WAIT; 1854 1855 wdc_c.timeout = wi->wi_atareq.timeout; 1856 wdc_c.r_command = wi->wi_atareq.command; 1857 wdc_c.r_head = wi->wi_atareq.head & 0x0f; 1858 wdc_c.r_cyl = wi->wi_atareq.cylinder; 1859 wdc_c.r_sector = wi->wi_atareq.sec_num; 1860 wdc_c.r_count = wi->wi_atareq.sec_count; 1861 wdc_c.r_precomp = wi->wi_atareq.features; 1862 wdc_c.r_st_bmask = WDCS_DRDY; 1863 wdc_c.r_st_pmask = WDCS_DRDY; 1864 wdc_c.data = wi->wi_bp.b_data; 1865 wdc_c.bcount = wi->wi_bp.b_bcount; 1866 1867 if (wi->wi_softc->atabus->ata_exec_command(wi->wi_softc->drvp, &wdc_c) 1868 != WDC_COMPLETE) { 1869 wi->wi_atareq.retsts = ATACMD_ERROR; 1870 goto bad; 1871 } 1872 1873 if (wdc_c.flags & (AT_ERROR | AT_TIMEOU | AT_DF)) { 1874 if (wdc_c.flags & AT_ERROR) { 1875 wi->wi_atareq.retsts = ATACMD_ERROR; 1876 wi->wi_atareq.error = wdc_c.r_error; 1877 } else if (wdc_c.flags & AT_DF) 1878 wi->wi_atareq.retsts = ATACMD_DF; 1879 else 1880 wi->wi_atareq.retsts = ATACMD_TIMEOUT; 1881 } else { 1882 wi->wi_atareq.retsts = ATACMD_OK; 1883 if (wi->wi_atareq.flags & ATACMD_READREG) { 1884 wi->wi_atareq.head = wdc_c.r_head ; 1885 wi->wi_atareq.cylinder = wdc_c.r_cyl; 1886 wi->wi_atareq.sec_num = wdc_c.r_sector; 1887 wi->wi_atareq.sec_count = wdc_c.r_count; 1888 wi->wi_atareq.features = wdc_c.r_precomp; 1889 wi->wi_atareq.error = wdc_c.r_error; 1890 } 1891 } 1892 1893 bp->b_error = 0; 1894 biodone(bp); 1895 return; 1896 bad: 1897 bp->b_flags |= B_ERROR; 1898 bp->b_error = error; 1899 biodone(bp); 1900 } 1901
Indexes created Mon Oct 20 20:10:13 GMT 2025