wd.c revision 1.274.2.8.2.6
1 /* $NetBSD: wd.c,v 1.274.2.8.2.6 2005/09/06 16:28:33 riz 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 2005/09/06 16:28:33 riz 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 { "ST3160023A*", 237 WD_QUIRK_FORCE_LBA48 }, 238 { "ST3200822A*", 239 WD_QUIRK_FORCE_LBA48 }, 240 { "ST3250823A*", 241 WD_QUIRK_FORCE_LBA48 }, 242 { "ST3200826A*", 243 WD_QUIRK_FORCE_LBA48 }, 244 { "ST3300831A*", 245 WD_QUIRK_FORCE_LBA48 }, 246 247 { NULL, 248 0 } 249 }; 250 251 static const struct wd_quirk * 252 wd_lookup_quirks(const char *name) 253 { 254 const struct wd_quirk *wdq; 255 const char *estr; 256 257 for (wdq = wd_quirk_table; wdq->wdq_match != NULL; wdq++) { 258 /* 259 * We only want exact matches (which include matches 260 * against globbing characters). 261 */ 262 if (pmatch(name, wdq->wdq_match, &estr) == 2) 263 return (wdq); 264 } 265 return (NULL); 266 } 267 268 int 269 wdprobe(struct device *parent, struct cfdata *match, void *aux) 270 { 271 struct ata_device *adev = aux; 272 273 if (adev == NULL) 274 return 0; 275 if (adev->adev_bustype->bustype_type != SCSIPI_BUSTYPE_ATA) 276 return 0; 277 278 if (match->cf_loc[ATA_HLCF_DRIVE] != ATA_HLCF_DRIVE_DEFAULT && 279 match->cf_loc[ATA_HLCF_DRIVE] != adev->adev_drv_data->drive) 280 return 0; 281 return 1; 282 } 283 284 void 285 wdattach(struct device *parent, struct device *self, void *aux) 286 { 287 struct wd_softc *wd = (void *)self; 288 struct ata_device *adev= aux; 289 int i, blank; 290 char buf[41], pbuf[9], c, *p, *q; 291 const struct wd_quirk *wdq; 292 WDCDEBUG_PRINT(("wdattach\n"), DEBUG_FUNCS | DEBUG_PROBE); 293 294 lockinit(&wd->sc_lock, PRIBIO | PCATCH, "wdlock", 0, 0); 295 296 callout_init(&wd->sc_restart_ch); 297 bufq_alloc(&wd->sc_q, BUFQ_DISK_DEFAULT_STRAT()|BUFQ_SORT_RAWBLOCK); 298 SLIST_INIT(&wd->sc_bslist); 299 300 wd->atabus = adev->adev_bustype; 301 wd->openings = adev->adev_openings; 302 wd->drvp = adev->adev_drv_data; 303 304 wd->drvp->drv_done = wddone; 305 wd->drvp->drv_softc = &wd->sc_dev; 306 307 aprint_naive("\n"); 308 309 /* read our drive info */ 310 if (wd_get_params(wd, AT_WAIT, &wd->sc_params) != 0) { 311 aprint_error("\n%s: IDENTIFY failed\n", wd->sc_dev.dv_xname); 312 return; 313 } 314 315 for (blank = 0, p = wd->sc_params.atap_model, q = buf, i = 0; 316 i < sizeof(wd->sc_params.atap_model); i++) { 317 c = *p++; 318 if (c == '\0') 319 break; 320 if (c != ' ') { 321 if (blank) { 322 *q++ = ' '; 323 blank = 0; 324 } 325 *q++ = c; 326 } else 327 blank = 1; 328 } 329 *q++ = '\0'; 330 331 aprint_normal(": <%s>\n", buf); 332 333 wdq = wd_lookup_quirks(buf); 334 if (wdq != NULL) 335 wd->sc_quirks = wdq->wdq_quirks; 336 337 if ((wd->sc_params.atap_multi & 0xff) > 1) { 338 wd->sc_multi = wd->sc_params.atap_multi & 0xff; 339 } else { 340 wd->sc_multi = 1; 341 } 342 343 aprint_normal("%s: drive supports %d-sector PIO transfers,", 344 wd->sc_dev.dv_xname, wd->sc_multi); 345 346 /* 48-bit LBA addressing */ 347 if ((wd->sc_params.atap_cmd2_en & ATA_CMD2_LBA48) != 0) 348 wd->sc_flags |= WDF_LBA48; 349 350 /* Prior to ATA-4, LBA was optional. */ 351 if ((wd->sc_params.atap_capabilities1 & WDC_CAP_LBA) != 0) 352 wd->sc_flags |= WDF_LBA; 353 #if 0 354 /* ATA-4 requires LBA. */ 355 if (wd->sc_params.atap_ataversion != 0xffff && 356 wd->sc_params.atap_ataversion >= WDC_VER_ATA4) 357 wd->sc_flags |= WDF_LBA; 358 #endif 359 360 if ((wd->sc_flags & WDF_LBA48) != 0) { 361 aprint_normal(" LBA48 addressing\n"); 362 wd->sc_capacity = 363 ((u_int64_t) wd->sc_params.__reserved6[11] << 48) | 364 ((u_int64_t) wd->sc_params.__reserved6[10] << 32) | 365 ((u_int64_t) wd->sc_params.__reserved6[9] << 16) | 366 ((u_int64_t) wd->sc_params.__reserved6[8] << 0); 367 } else if ((wd->sc_flags & WDF_LBA) != 0) { 368 aprint_normal(" LBA addressing\n"); 369 wd->sc_capacity = 370 (wd->sc_params.atap_capacity[1] << 16) | 371 wd->sc_params.atap_capacity[0]; 372 } else { 373 aprint_normal(" chs addressing\n"); 374 wd->sc_capacity = 375 wd->sc_params.atap_cylinders * 376 wd->sc_params.atap_heads * 377 wd->sc_params.atap_sectors; 378 } 379 format_bytes(pbuf, sizeof(pbuf), wd->sc_capacity * DEV_BSIZE); 380 aprint_normal("%s: %s, %d cyl, %d head, %d sec, " 381 "%d bytes/sect x %llu sectors\n", 382 self->dv_xname, pbuf, 383 (wd->sc_flags & WDF_LBA) ? (int)(wd->sc_capacity / 384 (wd->sc_params.atap_heads * wd->sc_params.atap_sectors)) : 385 wd->sc_params.atap_cylinders, 386 wd->sc_params.atap_heads, wd->sc_params.atap_sectors, 387 DEV_BSIZE, (unsigned long long)wd->sc_capacity); 388 389 WDCDEBUG_PRINT(("%s: atap_dmatiming_mimi=%d, atap_dmatiming_recom=%d\n", 390 self->dv_xname, wd->sc_params.atap_dmatiming_mimi, 391 wd->sc_params.atap_dmatiming_recom), DEBUG_PROBE); 392 /* 393 * Initialize and attach the disk structure. 394 */ 395 wd->sc_dk.dk_driver = &wddkdriver; 396 wd->sc_dk.dk_name = wd->sc_dev.dv_xname; 397 disk_attach(&wd->sc_dk); 398 wd->sc_wdc_bio.lp = wd->sc_dk.dk_label; 399 wd->sc_sdhook = shutdownhook_establish(wd_shutdown, wd); 400 if (wd->sc_sdhook == NULL) 401 aprint_error("%s: WARNING: unable to establish shutdown hook\n", 402 wd->sc_dev.dv_xname); 403 #if NRND > 0 404 rnd_attach_source(&wd->rnd_source, wd->sc_dev.dv_xname, 405 RND_TYPE_DISK, 0); 406 #endif 407 } 408 409 int 410 wdactivate(struct device *self, enum devact act) 411 { 412 int rv = 0; 413 414 switch (act) { 415 case DVACT_ACTIVATE: 416 rv = EOPNOTSUPP; 417 break; 418 419 case DVACT_DEACTIVATE: 420 /* 421 * Nothing to do; we key off the device's DVF_ACTIVATE. 422 */ 423 break; 424 } 425 return (rv); 426 } 427 428 int 429 wddetach(struct device *self, int flags) 430 { 431 struct wd_softc *sc = (struct wd_softc *)self; 432 struct buf *bp; 433 int s, bmaj, cmaj, i, mn; 434 435 /* locate the major number */ 436 bmaj = bdevsw_lookup_major(&wd_bdevsw); 437 cmaj = cdevsw_lookup_major(&wd_cdevsw); 438 439 s = splbio(); 440 441 /* Kill off any queued buffers. */ 442 while ((bp = BUFQ_GET(&sc->sc_q)) != NULL) { 443 bp->b_error = EIO; 444 bp->b_flags |= B_ERROR; 445 bp->b_resid = bp->b_bcount; 446 biodone(bp); 447 } 448 449 bufq_free(&sc->sc_q); 450 451 splx(s); 452 453 /* Nuke the vnodes for any open instances. */ 454 for (i = 0; i < MAXPARTITIONS; i++) { 455 mn = WDMINOR(self->dv_unit, i); 456 vdevgone(bmaj, mn, mn, VBLK); 457 vdevgone(cmaj, mn, mn, VCHR); 458 } 459 460 /* Detach disk. */ 461 disk_detach(&sc->sc_dk); 462 463 /* Clean out the bad sector list */ 464 while (!SLIST_EMPTY(&sc->sc_bslist)) { 465 void *head = SLIST_FIRST(&sc->sc_bslist); 466 SLIST_REMOVE_HEAD(&sc->sc_bslist, dbs_next); 467 free(head, M_TEMP); 468 } 469 sc->sc_bscount = 0; 470 471 /* Get rid of the shutdown hook. */ 472 if (sc->sc_sdhook != NULL) 473 shutdownhook_disestablish(sc->sc_sdhook); 474 475 #if NRND > 0 476 /* Unhook the entropy source. */ 477 rnd_detach_source(&sc->rnd_source); 478 #endif 479 480 lockmgr(&sc->sc_lock, LK_DRAIN, NULL); 481 482 return (0); 483 } 484 485 /* 486 * Read/write routine for a buffer. Validates the arguments and schedules the 487 * transfer. Does not wait for the transfer to complete. 488 */ 489 void 490 wdstrategy(struct buf *bp) 491 { 492 struct wd_softc *wd = device_lookup(&wd_cd, WDUNIT(bp->b_dev)); 493 struct disklabel *lp = wd->sc_dk.dk_label; 494 daddr_t blkno; 495 int s; 496 497 WDCDEBUG_PRINT(("wdstrategy (%s)\n", wd->sc_dev.dv_xname), 498 DEBUG_XFERS); 499 500 /* Valid request? */ 501 if (bp->b_blkno < 0 || 502 (bp->b_bcount % lp->d_secsize) != 0 || 503 (bp->b_bcount / lp->d_secsize) >= (1 << NBBY)) { 504 bp->b_error = EINVAL; 505 goto bad; 506 } 507 508 /* If device invalidated (e.g. media change, door open), error. */ 509 if ((wd->sc_flags & WDF_LOADED) == 0) { 510 bp->b_error = EIO; 511 goto bad; 512 } 513 514 /* If it's a null transfer, return immediately. */ 515 if (bp->b_bcount == 0) 516 goto done; 517 518 /* 519 * Do bounds checking, adjust transfer. if error, process. 520 * If end of partition, just return. 521 */ 522 if (WDPART(bp->b_dev) == RAW_PART) { 523 if (bounds_check_with_mediasize(bp, DEV_BSIZE, 524 wd->sc_capacity) <= 0) 525 goto done; 526 } else { 527 if (bounds_check_with_label(&wd->sc_dk, bp, 528 (wd->sc_flags & (WDF_WLABEL|WDF_LABELLING)) != 0) <= 0) 529 goto done; 530 } 531 532 /* 533 * Now convert the block number to absolute and put it in 534 * terms of the device's logical block size. 535 */ 536 if (lp->d_secsize >= DEV_BSIZE) 537 blkno = bp->b_blkno / (lp->d_secsize / DEV_BSIZE); 538 else 539 blkno = bp->b_blkno * (DEV_BSIZE / lp->d_secsize); 540 541 if (WDPART(bp->b_dev) != RAW_PART) 542 blkno += lp->d_partitions[WDPART(bp->b_dev)].p_offset; 543 544 bp->b_rawblkno = blkno; 545 546 /* 547 * If the transfer about to be attempted contains only a block that 548 * is known to be bad then return an error for the transfer without 549 * even attempting to start a transfer up under the premis that we 550 * will just end up doing more retries for a transfer that will end 551 * up failing again. 552 * XXX:SMP - mutex required to protect with DIOCBSFLUSH 553 */ 554 if (__predict_false(!SLIST_EMPTY(&wd->sc_bslist))) { 555 struct disk_badsectors *dbs; 556 daddr_t maxblk = blkno + (bp->b_bcount >> DEV_BSHIFT) - 1; 557 558 SLIST_FOREACH(dbs, &wd->sc_bslist, dbs_next) 559 if ((dbs->dbs_min <= blkno && blkno <= dbs->dbs_max) || 560 (dbs->dbs_min <= maxblk && maxblk <= dbs->dbs_max)){ 561 bp->b_error = EIO; 562 goto bad; 563 } 564 } 565 566 /* Queue transfer on drive, activate drive and controller if idle. */ 567 s = splbio(); 568 BUFQ_PUT(&wd->sc_q, bp); 569 wdstart(wd); 570 splx(s); 571 return; 572 bad: 573 bp->b_flags |= B_ERROR; 574 done: 575 /* Toss transfer; we're done early. */ 576 bp->b_resid = bp->b_bcount; 577 biodone(bp); 578 } 579 580 /* 581 * Queue a drive for I/O. 582 */ 583 void 584 wdstart(void *arg) 585 { 586 struct wd_softc *wd = arg; 587 struct buf *bp = NULL; 588 589 WDCDEBUG_PRINT(("wdstart %s\n", wd->sc_dev.dv_xname), 590 DEBUG_XFERS); 591 while (wd->openings > 0) { 592 593 /* Is there a buf for us ? */ 594 if ((bp = BUFQ_GET(&wd->sc_q)) == NULL) 595 return; 596 597 /* 598 * Make the command. First lock the device 599 */ 600 wd->openings--; 601 602 wd->retries = 0; 603 __wdstart(wd, bp); 604 } 605 } 606 607 static void 608 wd_split_mod15_write(struct buf *bp) 609 { 610 struct buf *obp = bp->b_private; 611 struct wd_softc *sc = wd_cd.cd_devs[DISKUNIT(obp->b_dev)]; 612 613 if (__predict_false(bp->b_flags & B_ERROR) != 0) { 614 /* 615 * Propagate the error. If this was the first half of 616 * the original transfer, make sure to account for that 617 * in the residual. 618 */ 619 if (bp->b_data == obp->b_data) 620 bp->b_resid += bp->b_bcount; 621 goto done; 622 } 623 624 /* 625 * If this was the second half of the transfer, we're all done! 626 */ 627 if (bp->b_data != obp->b_data) 628 goto done; 629 630 /* 631 * Advance the pointer to the second half and issue that command 632 * using the same opening. 633 */ 634 bp->b_flags = obp->b_flags | B_CALL; 635 bp->b_data += bp->b_bcount; 636 bp->b_blkno += (bp->b_bcount / 512); 637 bp->b_rawblkno += (bp->b_bcount / 512); 638 __wdstart(sc, bp); 639 return; 640 641 done: 642 obp->b_flags |= (bp->b_flags & (B_EINTR|B_ERROR)); 643 obp->b_error = bp->b_error; 644 obp->b_resid = bp->b_resid; 645 pool_put(&bufpool, bp); 646 biodone(obp); 647 sc->openings++; 648 /* wddone() will call wdstart() */ 649 } 650 651 void 652 __wdstart(struct wd_softc *wd, struct buf *bp) 653 { 654 655 /* 656 * Deal with the "split mod15 write" quirk. We just divide the 657 * transfer in two, doing the first half and then then second half 658 * with the same command opening. 659 * 660 * Note we MUST do this here, because we can't let insertion 661 * into the bufq cause the transfers to be re-merged. 662 */ 663 if (__predict_false((wd->sc_quirks & WD_QUIRK_SPLIT_MOD15_WRITE) != 0 && 664 (bp->b_flags & B_READ) == 0 && 665 bp->b_bcount > 512 && 666 ((bp->b_bcount / 512) % 15) == 1)) { 667 struct buf *nbp; 668 669 /* already at splbio */ 670 nbp = pool_get(&bufpool, PR_NOWAIT); 671 if (__predict_false(nbp == NULL)) { 672 /* No memory -- fail the iop. */ 673 bp->b_error = ENOMEM; 674 bp->b_flags |= B_ERROR; 675 bp->b_resid = bp->b_bcount; 676 biodone(bp); 677 wd->openings++; 678 return; 679 } 680 681 BUF_INIT(nbp); 682 nbp->b_error = 0; 683 nbp->b_proc = bp->b_proc; 684 nbp->b_vp = NULLVP; 685 nbp->b_dev = bp->b_dev; 686 687 nbp->b_bcount = bp->b_bcount / 2; 688 nbp->b_bufsize = bp->b_bcount / 2; 689 nbp->b_data = bp->b_data; 690 691 nbp->b_blkno = bp->b_blkno; 692 nbp->b_rawblkno = bp->b_rawblkno; 693 694 nbp->b_flags = bp->b_flags | B_CALL; 695 nbp->b_iodone = wd_split_mod15_write; 696 697 /* Put ptr to orig buf in b_private and use new buf */ 698 nbp->b_private = bp; 699 700 BIO_COPYPRIO(nbp, bp); 701 702 bp = nbp; 703 } 704 705 wd->sc_wdc_bio.blkno = bp->b_rawblkno; 706 wd->sc_wdc_bio.blkdone =0; 707 wd->sc_bp = bp; 708 /* 709 * If we're retrying, retry in single-sector mode. This will give us 710 * the sector number of the problem, and will eventually allow the 711 * transfer to succeed. 712 */ 713 if (wd->retries >= WDIORETRIES_SINGLE) 714 wd->sc_wdc_bio.flags = ATA_SINGLE; 715 else 716 wd->sc_wdc_bio.flags = 0; 717 if (wd->sc_flags & WDF_LBA48 && 718 (wd->sc_wdc_bio.blkno > LBA48_THRESHOLD || 719 (wd->sc_quirks & WD_QUIRK_FORCE_LBA48) != 0)) 720 wd->sc_wdc_bio.flags |= ATA_LBA48; 721 if (wd->sc_flags & WDF_LBA) 722 wd->sc_wdc_bio.flags |= ATA_LBA; 723 if (bp->b_flags & B_READ) 724 wd->sc_wdc_bio.flags |= ATA_READ; 725 wd->sc_wdc_bio.bcount = bp->b_bcount; 726 wd->sc_wdc_bio.databuf = bp->b_data; 727 /* Instrumentation. */ 728 disk_busy(&wd->sc_dk); 729 switch (wd->atabus->ata_bio(wd->drvp, &wd->sc_wdc_bio)) { 730 case WDC_TRY_AGAIN: 731 callout_reset(&wd->sc_restart_ch, hz, wdrestart, wd); 732 break; 733 case WDC_QUEUED: 734 case WDC_COMPLETE: 735 break; 736 default: 737 panic("__wdstart: bad return code from ata_bio()"); 738 } 739 } 740 741 void 742 wddone(void *v) 743 { 744 struct wd_softc *wd = v; 745 struct buf *bp = wd->sc_bp; 746 const char *errmsg; 747 int do_perror = 0; 748 WDCDEBUG_PRINT(("wddone %s\n", wd->sc_dev.dv_xname), 749 DEBUG_XFERS); 750 751 if (bp == NULL) 752 return; 753 bp->b_resid = wd->sc_wdc_bio.bcount; 754 switch (wd->sc_wdc_bio.error) { 755 case ERR_DMA: 756 errmsg = "DMA error"; 757 goto retry; 758 case ERR_DF: 759 errmsg = "device fault"; 760 goto retry; 761 case TIMEOUT: 762 errmsg = "device timeout"; 763 goto retry; 764 case ERR_RESET: 765 errmsg = "channel reset"; 766 goto retry2; 767 case ERROR: 768 /* Don't care about media change bits */ 769 if (wd->sc_wdc_bio.r_error != 0 && 770 (wd->sc_wdc_bio.r_error & ~(WDCE_MC | WDCE_MCR)) == 0) 771 goto noerror; 772 errmsg = "error"; 773 do_perror = 1; 774 retry: /* Just reset and retry. Can we do more ? */ 775 wd->atabus->ata_reset_channel(wd->drvp, AT_RST_NOCMD); 776 retry2: 777 diskerr(bp, "wd", errmsg, LOG_PRINTF, 778 wd->sc_wdc_bio.blkdone, wd->sc_dk.dk_label); 779 if (wd->retries < WDIORETRIES) 780 printf(", retrying\n"); 781 if (do_perror) 782 wdperror(wd); 783 if (wd->retries < WDIORETRIES) { 784 wd->retries++; 785 callout_reset(&wd->sc_restart_ch, RECOVERYTIME, 786 wdrestart, wd); 787 return; 788 } 789 printf("\n"); 790 791 /* 792 * Not all errors indicate a failed block but those that do, 793 * put the block on the bad-block list for the device. Only 794 * do this for reads because the drive should do it for writes, 795 * itself, according to Manuel. 796 */ 797 if ((bp->b_flags & B_READ) && 798 ((wd->drvp->ata_vers >= 4 && wd->sc_wdc_bio.r_error & 64) || 799 (wd->drvp->ata_vers < 4 && wd->sc_wdc_bio.r_error & 192))) { 800 struct disk_badsectors *dbs; 801 802 dbs = malloc(sizeof *dbs, M_TEMP, M_WAITOK); 803 dbs->dbs_min = bp->b_rawblkno; 804 dbs->dbs_max = dbs->dbs_min + (bp->b_bcount >> DEV_BSHIFT) - 1; 805 microtime(&dbs->dbs_failedat); 806 SLIST_INSERT_HEAD(&wd->sc_bslist, dbs, dbs_next); 807 wd->sc_bscount++; 808 } 809 810 bp->b_flags |= B_ERROR; 811 bp->b_error = EIO; 812 break; 813 case NOERROR: 814 noerror: if ((wd->sc_wdc_bio.flags & ATA_CORR) || wd->retries > 0) 815 printf("%s: soft error (corrected)\n", 816 wd->sc_dev.dv_xname); 817 break; 818 case ERR_NODEV: 819 bp->b_flags |= B_ERROR; 820 bp->b_error = EIO; 821 break; 822 } 823 disk_unbusy(&wd->sc_dk, (bp->b_bcount - bp->b_resid), 824 (bp->b_flags & B_READ)); 825 #if NRND > 0 826 rnd_add_uint32(&wd->rnd_source, bp->b_blkno); 827 #endif 828 /* XXX Yuck, but we don't want to increment openings in this case */ 829 if (__predict_false((bp->b_flags & B_CALL) != 0 && 830 bp->b_iodone == wd_split_mod15_write)) 831 biodone(bp); 832 else { 833 biodone(bp); 834 wd->openings++; 835 } 836 wdstart(wd); 837 } 838 839 void 840 wdrestart(void *v) 841 { 842 struct wd_softc *wd = v; 843 struct buf *bp = wd->sc_bp; 844 int s; 845 WDCDEBUG_PRINT(("wdrestart %s\n", wd->sc_dev.dv_xname), 846 DEBUG_XFERS); 847 848 s = splbio(); 849 __wdstart(v, bp); 850 splx(s); 851 } 852 853 int 854 wdread(dev_t dev, struct uio *uio, int flags) 855 { 856 857 WDCDEBUG_PRINT(("wdread\n"), DEBUG_XFERS); 858 return (physio(wdstrategy, NULL, dev, B_READ, minphys, uio)); 859 } 860 861 int 862 wdwrite(dev_t dev, struct uio *uio, int flags) 863 { 864 865 WDCDEBUG_PRINT(("wdwrite\n"), DEBUG_XFERS); 866 return (physio(wdstrategy, NULL, dev, B_WRITE, minphys, uio)); 867 } 868 869 int 870 wdopen(dev_t dev, int flag, int fmt, struct proc *p) 871 { 872 struct wd_softc *wd; 873 int part, error; 874 875 WDCDEBUG_PRINT(("wdopen\n"), DEBUG_FUNCS); 876 wd = device_lookup(&wd_cd, WDUNIT(dev)); 877 if (wd == NULL) 878 return (ENXIO); 879 880 if ((wd->sc_dev.dv_flags & DVF_ACTIVE) == 0) 881 return (ENODEV); 882 883 /* 884 * If this is the first open of this device, add a reference 885 * to the adapter. 886 */ 887 if (wd->sc_dk.dk_openmask == 0 && 888 (error = wd->atabus->ata_addref(wd->drvp)) != 0) 889 return (error); 890 891 if ((error = lockmgr(&wd->sc_lock, LK_EXCLUSIVE, NULL)) != 0) 892 goto bad4; 893 894 if (wd->sc_dk.dk_openmask != 0) { 895 /* 896 * If any partition is open, but the disk has been invalidated, 897 * disallow further opens. 898 */ 899 if ((wd->sc_flags & WDF_LOADED) == 0) { 900 error = EIO; 901 goto bad3; 902 } 903 } else { 904 if ((wd->sc_flags & WDF_LOADED) == 0) { 905 wd->sc_flags |= WDF_LOADED; 906 907 /* Load the physical device parameters. */ 908 wd_get_params(wd, AT_WAIT, &wd->sc_params); 909 910 /* Load the partition info if not already loaded. */ 911 wdgetdisklabel(wd); 912 } 913 } 914 915 part = WDPART(dev); 916 917 /* Check that the partition exists. */ 918 if (part != RAW_PART && 919 (part >= wd->sc_dk.dk_label->d_npartitions || 920 wd->sc_dk.dk_label->d_partitions[part].p_fstype == FS_UNUSED)) { 921 error = ENXIO; 922 goto bad; 923 } 924 925 /* Insure only one open at a time. */ 926 switch (fmt) { 927 case S_IFCHR: 928 wd->sc_dk.dk_copenmask |= (1 << part); 929 break; 930 case S_IFBLK: 931 wd->sc_dk.dk_bopenmask |= (1 << part); 932 break; 933 } 934 wd->sc_dk.dk_openmask = 935 wd->sc_dk.dk_copenmask | wd->sc_dk.dk_bopenmask; 936 937 lockmgr(&wd->sc_lock, LK_RELEASE, NULL); 938 return 0; 939 940 bad: 941 if (wd->sc_dk.dk_openmask == 0) { 942 } 943 944 bad3: 945 lockmgr(&wd->sc_lock, LK_RELEASE, NULL); 946 bad4: 947 if (wd->sc_dk.dk_openmask == 0) 948 wd->atabus->ata_delref(wd->drvp); 949 return error; 950 } 951 952 int 953 wdclose(dev_t dev, int flag, int fmt, struct proc *p) 954 { 955 struct wd_softc *wd = device_lookup(&wd_cd, WDUNIT(dev)); 956 int part = WDPART(dev); 957 int error; 958 959 WDCDEBUG_PRINT(("wdclose\n"), DEBUG_FUNCS); 960 if ((error = lockmgr(&wd->sc_lock, LK_EXCLUSIVE, NULL)) != 0) 961 return error; 962 963 switch (fmt) { 964 case S_IFCHR: 965 wd->sc_dk.dk_copenmask &= ~(1 << part); 966 break; 967 case S_IFBLK: 968 wd->sc_dk.dk_bopenmask &= ~(1 << part); 969 break; 970 } 971 wd->sc_dk.dk_openmask = 972 wd->sc_dk.dk_copenmask | wd->sc_dk.dk_bopenmask; 973 974 if (wd->sc_dk.dk_openmask == 0) { 975 wd_flushcache(wd, AT_WAIT); 976 /* XXXX Must wait for I/O to complete! */ 977 978 if (! (wd->sc_flags & WDF_KLABEL)) 979 wd->sc_flags &= ~WDF_LOADED; 980 981 wd->atabus->ata_delref(wd->drvp); 982 } 983 984 lockmgr(&wd->sc_lock, LK_RELEASE, NULL); 985 return 0; 986 } 987 988 void 989 wdgetdefaultlabel(struct wd_softc *wd, struct disklabel *lp) 990 { 991 992 WDCDEBUG_PRINT(("wdgetdefaultlabel\n"), DEBUG_FUNCS); 993 memset(lp, 0, sizeof(struct disklabel)); 994 995 lp->d_secsize = DEV_BSIZE; 996 lp->d_ntracks = wd->sc_params.atap_heads; 997 lp->d_nsectors = wd->sc_params.atap_sectors; 998 lp->d_ncylinders = (wd->sc_flags & WDF_LBA) ? wd->sc_capacity / 999 (wd->sc_params.atap_heads * wd->sc_params.atap_sectors) : 1000 wd->sc_params.atap_cylinders; 1001 lp->d_secpercyl = lp->d_ntracks * lp->d_nsectors; 1002 1003 if (strcmp(wd->sc_params.atap_model, "ST506") == 0) 1004 lp->d_type = DTYPE_ST506; 1005 else 1006 lp->d_type = DTYPE_ESDI; 1007 1008 strncpy(lp->d_typename, wd->sc_params.atap_model, 16); 1009 strncpy(lp->d_packname, "fictitious", 16); 1010 if (wd->sc_capacity > UINT32_MAX) 1011 lp->d_secperunit = UINT32_MAX; 1012 else 1013 lp->d_secperunit = wd->sc_capacity; 1014 lp->d_rpm = 3600; 1015 lp->d_interleave = 1; 1016 lp->d_flags = 0; 1017 1018 lp->d_partitions[RAW_PART].p_offset = 0; 1019 lp->d_partitions[RAW_PART].p_size = 1020 lp->d_secperunit * (lp->d_secsize / DEV_BSIZE); 1021 lp->d_partitions[RAW_PART].p_fstype = FS_UNUSED; 1022 lp->d_npartitions = RAW_PART + 1; 1023 1024 lp->d_magic = DISKMAGIC; 1025 lp->d_magic2 = DISKMAGIC; 1026 lp->d_checksum = dkcksum(lp); 1027 } 1028 1029 /* 1030 * Fabricate a default disk label, and try to read the correct one. 1031 */ 1032 void 1033 wdgetdisklabel(struct wd_softc *wd) 1034 { 1035 struct disklabel *lp = wd->sc_dk.dk_label; 1036 const char *errstring; 1037 1038 WDCDEBUG_PRINT(("wdgetdisklabel\n"), DEBUG_FUNCS); 1039 1040 memset(wd->sc_dk.dk_cpulabel, 0, sizeof(struct cpu_disklabel)); 1041 1042 wdgetdefaultlabel(wd, lp); 1043 1044 wd->sc_badsect[0] = -1; 1045 1046 if (wd->drvp->state > RESET) 1047 wd->drvp->drive_flags |= DRIVE_RESET; 1048 errstring = readdisklabel(MAKEWDDEV(0, wd->sc_dev.dv_unit, RAW_PART), 1049 wdstrategy, lp, wd->sc_dk.dk_cpulabel); 1050 if (errstring) { 1051 /* 1052 * This probably happened because the drive's default 1053 * geometry doesn't match the DOS geometry. We 1054 * assume the DOS geometry is now in the label and try 1055 * again. XXX This is a kluge. 1056 */ 1057 if (wd->drvp->state > RESET) 1058 wd->drvp->drive_flags |= DRIVE_RESET; 1059 errstring = readdisklabel(MAKEWDDEV(0, wd->sc_dev.dv_unit, 1060 RAW_PART), wdstrategy, lp, wd->sc_dk.dk_cpulabel); 1061 } 1062 if (errstring) { 1063 printf("%s: %s\n", wd->sc_dev.dv_xname, errstring); 1064 return; 1065 } 1066 1067 if (wd->drvp->state > RESET) 1068 wd->drvp->drive_flags |= DRIVE_RESET; 1069 #ifdef HAS_BAD144_HANDLING 1070 if ((lp->d_flags & D_BADSECT) != 0) 1071 bad144intern(wd); 1072 #endif 1073 } 1074 1075 void 1076 wdperror(const struct wd_softc *wd) 1077 { 1078 static const char *const errstr0_3[] = {"address mark not found", 1079 "track 0 not found", "aborted command", "media change requested", 1080 "id not found", "media changed", "uncorrectable data error", 1081 "bad block detected"}; 1082 static const char *const errstr4_5[] = { 1083 "obsolete (address mark not found)", 1084 "no media/write protected", "aborted command", 1085 "media change requested", "id not found", "media changed", 1086 "uncorrectable data error", "interface CRC error"}; 1087 const char *const *errstr; 1088 int i; 1089 char *sep = ""; 1090 1091 const char *devname = wd->sc_dev.dv_xname; 1092 struct ata_drive_datas *drvp = wd->drvp; 1093 int errno = wd->sc_wdc_bio.r_error; 1094 1095 if (drvp->ata_vers >= 4) 1096 errstr = errstr4_5; 1097 else 1098 errstr = errstr0_3; 1099 1100 printf("%s: (", devname); 1101 1102 if (errno == 0) 1103 printf("error not notified"); 1104 1105 for (i = 0; i < 8; i++) { 1106 if (errno & (1 << i)) { 1107 printf("%s%s", sep, errstr[i]); 1108 sep = ", "; 1109 } 1110 } 1111 printf(")\n"); 1112 } 1113 1114 int 1115 wdioctl(dev_t dev, u_long xfer, caddr_t addr, int flag, struct proc *p) 1116 { 1117 struct wd_softc *wd = device_lookup(&wd_cd, WDUNIT(dev)); 1118 int error = 0; 1119 #ifdef __HAVE_OLD_DISKLABEL 1120 struct disklabel *newlabel = NULL; 1121 #endif 1122 1123 WDCDEBUG_PRINT(("wdioctl\n"), DEBUG_FUNCS); 1124 1125 if ((wd->sc_flags & WDF_LOADED) == 0) 1126 return EIO; 1127 1128 switch (xfer) { 1129 #ifdef HAS_BAD144_HANDLING 1130 case DIOCSBAD: 1131 if ((flag & FWRITE) == 0) 1132 return EBADF; 1133 wd->sc_dk.dk_cpulabel->bad = *(struct dkbad *)addr; 1134 wd->sc_dk.dk_label->d_flags |= D_BADSECT; 1135 bad144intern(wd); 1136 return 0; 1137 #endif 1138 1139 case DIOCBSLIST : 1140 { 1141 u_int32_t count, missing, skip; 1142 struct disk_badsecinfo dbsi; 1143 struct disk_badsectors *dbs; 1144 size_t available; 1145 caddr_t laddr; 1146 1147 dbsi = *(struct disk_badsecinfo *)addr; 1148 missing = wd->sc_bscount; 1149 count = 0; 1150 available = dbsi.dbsi_bufsize; 1151 skip = dbsi.dbsi_skip; 1152 laddr = dbsi.dbsi_buffer; 1153 1154 /* 1155 * We start this loop with the expectation that all of the 1156 * entries will be missed and decrement this counter each 1157 * time we either skip over one (already copied out) or 1158 * we actually copy it back to user space. The structs 1159 * holding the bad sector information are copied directly 1160 * back to user space whilst the summary is returned via 1161 * the struct passed in via the ioctl. 1162 */ 1163 SLIST_FOREACH(dbs, &wd->sc_bslist, dbs_next) { 1164 if (skip > 0) { 1165 missing--; 1166 skip--; 1167 continue; 1168 } 1169 if (available < sizeof(*dbs)) 1170 break; 1171 available -= sizeof(*dbs); 1172 copyout(dbs, laddr, sizeof(*dbs)); 1173 laddr += sizeof(*dbs); 1174 missing--; 1175 count++; 1176 } 1177 dbsi.dbsi_left = missing; 1178 dbsi.dbsi_copied = count; 1179 *(struct disk_badsecinfo *)addr = dbsi; 1180 return 0; 1181 } 1182 1183 case DIOCBSFLUSH : 1184 /* Clean out the bad sector list */ 1185 while (!SLIST_EMPTY(&wd->sc_bslist)) { 1186 void *head = SLIST_FIRST(&wd->sc_bslist); 1187 SLIST_REMOVE_HEAD(&wd->sc_bslist, dbs_next); 1188 free(head, M_TEMP); 1189 } 1190 wd->sc_bscount = 0; 1191 return 0; 1192 1193 case DIOCGDINFO: 1194 *(struct disklabel *)addr = *(wd->sc_dk.dk_label); 1195 return 0; 1196 #ifdef __HAVE_OLD_DISKLABEL 1197 case ODIOCGDINFO: 1198 newlabel = malloc(sizeof *newlabel, M_TEMP, M_WAITOK); 1199 if (newlabel == NULL) 1200 return EIO; 1201 *newlabel = *(wd->sc_dk.dk_label); 1202 if (newlabel->d_npartitions <= OLDMAXPARTITIONS) 1203 memcpy(addr, newlabel, sizeof (struct olddisklabel)); 1204 else 1205 error = ENOTTY; 1206 free(newlabel, M_TEMP); 1207 return error; 1208 #endif 1209 1210 case DIOCGPART: 1211 ((struct partinfo *)addr)->disklab = wd->sc_dk.dk_label; 1212 ((struct partinfo *)addr)->part = 1213 &wd->sc_dk.dk_label->d_partitions[WDPART(dev)]; 1214 return 0; 1215 1216 case DIOCWDINFO: 1217 case DIOCSDINFO: 1218 #ifdef __HAVE_OLD_DISKLABEL 1219 case ODIOCWDINFO: 1220 case ODIOCSDINFO: 1221 #endif 1222 { 1223 struct disklabel *lp; 1224 1225 if ((flag & FWRITE) == 0) 1226 return EBADF; 1227 1228 #ifdef __HAVE_OLD_DISKLABEL 1229 if (xfer == ODIOCSDINFO || xfer == ODIOCWDINFO) { 1230 newlabel = malloc(sizeof *newlabel, M_TEMP, M_WAITOK); 1231 if (newlabel == NULL) 1232 return EIO; 1233 memset(newlabel, 0, sizeof newlabel); 1234 memcpy(newlabel, addr, sizeof (struct olddisklabel)); 1235 lp = newlabel; 1236 } else 1237 #endif 1238 lp = (struct disklabel *)addr; 1239 1240 if ((error = lockmgr(&wd->sc_lock, LK_EXCLUSIVE, NULL)) != 0) 1241 goto bad; 1242 wd->sc_flags |= WDF_LABELLING; 1243 1244 error = setdisklabel(wd->sc_dk.dk_label, 1245 lp, /*wd->sc_dk.dk_openmask : */0, 1246 wd->sc_dk.dk_cpulabel); 1247 if (error == 0) { 1248 if (wd->drvp->state > RESET) 1249 wd->drvp->drive_flags |= DRIVE_RESET; 1250 if (xfer == DIOCWDINFO 1251 #ifdef __HAVE_OLD_DISKLABEL 1252 || xfer == ODIOCWDINFO 1253 #endif 1254 ) 1255 error = writedisklabel(WDLABELDEV(dev), 1256 wdstrategy, wd->sc_dk.dk_label, 1257 wd->sc_dk.dk_cpulabel); 1258 } 1259 1260 wd->sc_flags &= ~WDF_LABELLING; 1261 lockmgr(&wd->sc_lock, LK_RELEASE, NULL); 1262 bad: 1263 #ifdef __HAVE_OLD_DISKLABEL 1264 if (newlabel != NULL) 1265 free(newlabel, M_TEMP); 1266 #endif 1267 return error; 1268 } 1269 1270 case DIOCKLABEL: 1271 if (*(int *)addr) 1272 wd->sc_flags |= WDF_KLABEL; 1273 else 1274 wd->sc_flags &= ~WDF_KLABEL; 1275 return 0; 1276 1277 case DIOCWLABEL: 1278 if ((flag & FWRITE) == 0) 1279 return EBADF; 1280 if (*(int *)addr) 1281 wd->sc_flags |= WDF_WLABEL; 1282 else 1283 wd->sc_flags &= ~WDF_WLABEL; 1284 return 0; 1285 1286 case DIOCGDEFLABEL: 1287 wdgetdefaultlabel(wd, (struct disklabel *)addr); 1288 return 0; 1289 #ifdef __HAVE_OLD_DISKLABEL 1290 case ODIOCGDEFLABEL: 1291 newlabel = malloc(sizeof *newlabel, M_TEMP, M_WAITOK); 1292 if (newlabel == NULL) 1293 return EIO; 1294 wdgetdefaultlabel(wd, newlabel); 1295 if (newlabel->d_npartitions <= OLDMAXPARTITIONS) 1296 memcpy(addr, &newlabel, sizeof (struct olddisklabel)); 1297 else 1298 error = ENOTTY; 1299 free(newlabel, M_TEMP); 1300 return error; 1301 #endif 1302 1303 #ifdef notyet 1304 case DIOCWFORMAT: 1305 if ((flag & FWRITE) == 0) 1306 return EBADF; 1307 { 1308 register struct format_op *fop; 1309 struct iovec aiov; 1310 struct uio auio; 1311 1312 fop = (struct format_op *)addr; 1313 aiov.iov_base = fop->df_buf; 1314 aiov.iov_len = fop->df_count; 1315 auio.uio_iov = &aiov; 1316 auio.uio_iovcnt = 1; 1317 auio.uio_resid = fop->df_count; 1318 auio.uio_segflg = 0; 1319 auio.uio_offset = 1320 fop->df_startblk * wd->sc_dk.dk_label->d_secsize; 1321 auio.uio_procp = p; 1322 error = physio(wdformat, NULL, dev, B_WRITE, minphys, 1323 &auio); 1324 fop->df_count -= auio.uio_resid; 1325 fop->df_reg[0] = wdc->sc_status; 1326 fop->df_reg[1] = wdc->sc_error; 1327 return error; 1328 } 1329 #endif 1330 case DIOCGCACHE: 1331 return wd_getcache(wd, (int *)addr); 1332 1333 case DIOCSCACHE: 1334 return wd_setcache(wd, *(int *)addr); 1335 1336 case DIOCCACHESYNC: 1337 return wd_flushcache(wd, AT_WAIT); 1338 1339 case ATAIOCCOMMAND: 1340 /* 1341 * Make sure this command is (relatively) safe first 1342 */ 1343 if ((((atareq_t *) addr)->flags & ATACMD_READ) == 0 && 1344 (flag & FWRITE) == 0) 1345 return (EBADF); 1346 { 1347 struct wd_ioctl *wi; 1348 atareq_t *atareq = (atareq_t *) addr; 1349 int error; 1350 1351 wi = wi_get(); 1352 wi->wi_softc = wd; 1353 wi->wi_atareq = *atareq; 1354 1355 if (atareq->datalen && atareq->flags & 1356 (ATACMD_READ | ATACMD_WRITE)) { 1357 wi->wi_iov.iov_base = atareq->databuf; 1358 wi->wi_iov.iov_len = atareq->datalen; 1359 wi->wi_uio.uio_iov = &wi->wi_iov; 1360 wi->wi_uio.uio_iovcnt = 1; 1361 wi->wi_uio.uio_resid = atareq->datalen; 1362 wi->wi_uio.uio_offset = 0; 1363 wi->wi_uio.uio_segflg = UIO_USERSPACE; 1364 wi->wi_uio.uio_rw = 1365 (atareq->flags & ATACMD_READ) ? B_READ : B_WRITE; 1366 wi->wi_uio.uio_procp = p; 1367 error = physio(wdioctlstrategy, &wi->wi_bp, dev, 1368 (atareq->flags & ATACMD_READ) ? B_READ : B_WRITE, 1369 minphys, &wi->wi_uio); 1370 } else { 1371 /* No need to call physio if we don't have any 1372 user data */ 1373 wi->wi_bp.b_flags = 0; 1374 wi->wi_bp.b_data = 0; 1375 wi->wi_bp.b_bcount = 0; 1376 wi->wi_bp.b_dev = 0; 1377 wi->wi_bp.b_proc = p; 1378 wdioctlstrategy(&wi->wi_bp); 1379 error = wi->wi_bp.b_error; 1380 } 1381 *atareq = wi->wi_atareq; 1382 wi_free(wi); 1383 return(error); 1384 } 1385 1386 default: 1387 return ENOTTY; 1388 } 1389 1390 #ifdef DIAGNOSTIC 1391 panic("wdioctl: impossible"); 1392 #endif 1393 } 1394 1395 #ifdef B_FORMAT 1396 int 1397 wdformat(struct buf *bp) 1398 { 1399 1400 bp->b_flags |= B_FORMAT; 1401 return wdstrategy(bp); 1402 } 1403 #endif 1404 1405 int 1406 wdsize(dev_t dev) 1407 { 1408 struct wd_softc *wd; 1409 int part, omask; 1410 int size; 1411 1412 WDCDEBUG_PRINT(("wdsize\n"), DEBUG_FUNCS); 1413 1414 wd = device_lookup(&wd_cd, WDUNIT(dev)); 1415 if (wd == NULL) 1416 return (-1); 1417 1418 part = WDPART(dev); 1419 omask = wd->sc_dk.dk_openmask & (1 << part); 1420 1421 if (omask == 0 && wdopen(dev, 0, S_IFBLK, NULL) != 0) 1422 return (-1); 1423 if (wd->sc_dk.dk_label->d_partitions[part].p_fstype != FS_SWAP) 1424 size = -1; 1425 else 1426 size = wd->sc_dk.dk_label->d_partitions[part].p_size * 1427 (wd->sc_dk.dk_label->d_secsize / DEV_BSIZE); 1428 if (omask == 0 && wdclose(dev, 0, S_IFBLK, NULL) != 0) 1429 return (-1); 1430 return (size); 1431 } 1432 1433 /* #define WD_DUMP_NOT_TRUSTED if you just want to watch */ 1434 static int wddoingadump = 0; 1435 static int wddumprecalibrated = 0; 1436 static int wddumpmulti = 1; 1437 1438 /* 1439 * Dump core after a system crash. 1440 */ 1441 int 1442 wddump(dev_t dev, daddr_t blkno, caddr_t va, size_t size) 1443 { 1444 struct wd_softc *wd; /* disk unit to do the I/O */ 1445 struct disklabel *lp; /* disk's disklabel */ 1446 int part, err; 1447 int nblks; /* total number of sectors left to write */ 1448 1449 /* Check if recursive dump; if so, punt. */ 1450 if (wddoingadump) 1451 return EFAULT; 1452 wddoingadump = 1; 1453 1454 wd = device_lookup(&wd_cd, WDUNIT(dev)); 1455 if (wd == NULL) 1456 return (ENXIO); 1457 1458 part = WDPART(dev); 1459 1460 /* Convert to disk sectors. Request must be a multiple of size. */ 1461 lp = wd->sc_dk.dk_label; 1462 if ((size % lp->d_secsize) != 0) 1463 return EFAULT; 1464 nblks = size / lp->d_secsize; 1465 blkno = blkno / (lp->d_secsize / DEV_BSIZE); 1466 1467 /* Check transfer bounds against partition size. */ 1468 if ((blkno < 0) || ((blkno + nblks) > lp->d_partitions[part].p_size)) 1469 return EINVAL; 1470 1471 /* Offset block number to start of partition. */ 1472 blkno += lp->d_partitions[part].p_offset; 1473 1474 /* Recalibrate, if first dump transfer. */ 1475 if (wddumprecalibrated == 0) { 1476 wddumpmulti = wd->sc_multi; 1477 wddumprecalibrated = 1; 1478 wd->atabus->ata_reset_channel(wd->drvp, AT_POLL | AT_RST_EMERG); 1479 wd->drvp->state = RESET; 1480 } 1481 1482 while (nblks > 0) { 1483 wd->sc_bp = NULL; 1484 wd->sc_wdc_bio.blkno = blkno; 1485 wd->sc_wdc_bio.flags = ATA_POLL; 1486 if (wd->sc_flags & WDF_LBA48 && 1487 (blkno > LBA48_THRESHOLD || 1488 (wd->sc_quirks & WD_QUIRK_FORCE_LBA48) != 0)) 1489 wd->sc_wdc_bio.flags |= ATA_LBA48; 1490 if (wd->sc_flags & WDF_LBA) 1491 wd->sc_wdc_bio.flags |= ATA_LBA; 1492 wd->sc_wdc_bio.bcount = 1493 min(nblks, wddumpmulti) * lp->d_secsize; 1494 wd->sc_wdc_bio.databuf = va; 1495 #ifndef WD_DUMP_NOT_TRUSTED 1496 switch (wd->atabus->ata_bio(wd->drvp, &wd->sc_wdc_bio)) { 1497 case WDC_TRY_AGAIN: 1498 panic("wddump: try again"); 1499 break; 1500 case WDC_QUEUED: 1501 panic("wddump: polled command has been queued"); 1502 break; 1503 case WDC_COMPLETE: 1504 break; 1505 } 1506 switch(wd->sc_wdc_bio.error) { 1507 case TIMEOUT: 1508 printf("wddump: device timed out"); 1509 err = EIO; 1510 break; 1511 case ERR_DF: 1512 printf("wddump: drive fault"); 1513 err = EIO; 1514 break; 1515 case ERR_DMA: 1516 printf("wddump: DMA error"); 1517 err = EIO; 1518 break; 1519 case ERROR: 1520 printf("wddump: "); 1521 wdperror(wd); 1522 err = EIO; 1523 break; 1524 case NOERROR: 1525 err = 0; 1526 break; 1527 default: 1528 panic("wddump: unknown error type"); 1529 } 1530 if (err != 0) { 1531 printf("\n"); 1532 return err; 1533 } 1534 #else /* WD_DUMP_NOT_TRUSTED */ 1535 /* Let's just talk about this first... */ 1536 printf("wd%d: dump addr 0x%x, cylin %d, head %d, sector %d\n", 1537 unit, va, cylin, head, sector); 1538 delay(500 * 1000); /* half a second */ 1539 #endif 1540 1541 /* update block count */ 1542 nblks -= min(nblks, wddumpmulti); 1543 blkno += min(nblks, wddumpmulti); 1544 va += min(nblks, wddumpmulti) * lp->d_secsize; 1545 } 1546 1547 wddoingadump = 0; 1548 return 0; 1549 } 1550 1551 #ifdef HAS_BAD144_HANDLING 1552 /* 1553 * Internalize the bad sector table. 1554 */ 1555 void 1556 bad144intern(struct wd_softc *wd) 1557 { 1558 struct dkbad *bt = &wd->sc_dk.dk_cpulabel->bad; 1559 struct disklabel *lp = wd->sc_dk.dk_label; 1560 int i = 0; 1561 1562 WDCDEBUG_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->sc_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->sc_badsect[i] = -1; 1574 } 1575 #endif 1576 1577 int 1578 wd_get_params(struct wd_softc *wd, u_int8_t flags, struct ataparams *params) 1579 { 1580 switch (wd->atabus->ata_get_params(wd->drvp, flags, params)) { 1581 case CMD_AGAIN: 1582 return 1; 1583 case CMD_ERR: 1584 /* 1585 * We `know' there's a drive here; just assume it's old. 1586 * This geometry is only used to read the MBR and print a 1587 * (false) attach message. 1588 */ 1589 strncpy(params->atap_model, "ST506", 1590 sizeof params->atap_model); 1591 params->atap_config = ATA_CFG_FIXED; 1592 params->atap_cylinders = 1024; 1593 params->atap_heads = 8; 1594 params->atap_sectors = 17; 1595 params->atap_multi = 1; 1596 params->atap_capabilities1 = params->atap_capabilities2 = 0; 1597 wd->drvp->ata_vers = -1; /* Mark it as pre-ATA */ 1598 return 0; 1599 case CMD_OK: 1600 return 0; 1601 default: 1602 panic("wd_get_params: bad return code from ata_get_params"); 1603 /* NOTREACHED */ 1604 } 1605 } 1606 1607 int 1608 wd_getcache(struct wd_softc *wd, int *bitsp) 1609 { 1610 struct ataparams params; 1611 1612 if (wd_get_params(wd, AT_WAIT, ¶ms) != 0) 1613 return EIO; 1614 if (params.atap_cmd_set1 == 0x0000 || 1615 params.atap_cmd_set1 == 0xffff || 1616 (params.atap_cmd_set1 & WDC_CMD1_CACHE) == 0) { 1617 *bitsp = 0; 1618 return 0; 1619 } 1620 *bitsp = DKCACHE_WCHANGE | DKCACHE_READ; 1621 if (params.atap_cmd1_en & WDC_CMD1_CACHE) 1622 *bitsp |= DKCACHE_WRITE; 1623 1624 return 0; 1625 } 1626 1627 int 1628 wd_setcache(struct wd_softc *wd, int bits) 1629 { 1630 struct ataparams params; 1631 struct wdc_command wdc_c; 1632 1633 if (wd_get_params(wd, AT_WAIT, ¶ms) != 0) 1634 return EIO; 1635 1636 if (params.atap_cmd_set1 == 0x0000 || 1637 params.atap_cmd_set1 == 0xffff || 1638 (params.atap_cmd_set1 & WDC_CMD1_CACHE) == 0) 1639 return EOPNOTSUPP; 1640 1641 if ((bits & DKCACHE_READ) == 0 || 1642 (bits & DKCACHE_SAVE) != 0) 1643 return EOPNOTSUPP; 1644 1645 memset(&wdc_c, 0, sizeof(struct wdc_command)); 1646 wdc_c.r_command = SET_FEATURES; 1647 wdc_c.r_st_bmask = 0; 1648 wdc_c.r_st_pmask = 0; 1649 wdc_c.timeout = 30000; /* 30s timeout */ 1650 wdc_c.flags = AT_WAIT; 1651 if (bits & DKCACHE_WRITE) 1652 wdc_c.r_precomp = WDSF_WRITE_CACHE_EN; 1653 else 1654 wdc_c.r_precomp = WDSF_WRITE_CACHE_DS; 1655 if (wd->atabus->ata_exec_command(wd->drvp, &wdc_c) != WDC_COMPLETE) { 1656 printf("%s: wd_setcache command not complete\n", 1657 wd->sc_dev.dv_xname); 1658 return EIO; 1659 } 1660 if (wdc_c.flags & (AT_ERROR | AT_TIMEOU | AT_DF)) { 1661 printf("%s: wd_setcache command error 0x%x\n", 1662 wd->sc_dev.dv_xname, wdc_c.flags); 1663 return EIO; 1664 } 1665 if (wdc_c.flags & ERR_NODEV) 1666 return ENODEV; 1667 return 0; 1668 } 1669 1670 int 1671 wd_flushcache(struct wd_softc *wd, int flags) 1672 { 1673 struct wdc_command wdc_c; 1674 1675 /* 1676 * WDCC_FLUSHCACHE is here since ATA-4, but some drives report 1677 * only ATA-2 and still support it. 1678 */ 1679 if (wd->drvp->ata_vers < 4 && 1680 ((wd->sc_params.atap_cmd_set2 & WDC_CMD2_FC) == 0 || 1681 wd->sc_params.atap_cmd_set2 == 0xffff)) 1682 return ENODEV; 1683 memset(&wdc_c, 0, sizeof(struct wdc_command)); 1684 if ((wd->sc_params.atap_cmd2_en & ATA_CMD2_LBA48) != 0 && 1685 (wd->sc_params.atap_cmd2_en & ATA_CMD2_FCE) != 0) 1686 wdc_c.r_command = WDCC_FLUSHCACHE_EXT; 1687 else 1688 wdc_c.r_command = WDCC_FLUSHCACHE; 1689 wdc_c.r_st_bmask = WDCS_DRDY; 1690 wdc_c.r_st_pmask = WDCS_DRDY; 1691 wdc_c.flags = flags; 1692 wdc_c.timeout = 30000; /* 30s timeout */ 1693 if (wd->atabus->ata_exec_command(wd->drvp, &wdc_c) != WDC_COMPLETE) { 1694 printf("%s: flush cache command didn't complete\n", 1695 wd->sc_dev.dv_xname); 1696 return EIO; 1697 } 1698 if (wdc_c.flags & ERR_NODEV) 1699 return ENODEV; 1700 if (wdc_c.flags & AT_TIMEOU) { 1701 printf("%s: flush cache command timeout\n", 1702 wd->sc_dev.dv_xname); 1703 return EIO; 1704 } 1705 if (wdc_c.flags & AT_ERROR) { 1706 if (wdc_c.r_error == WDCE_ABRT) /* command not supported */ 1707 return ENODEV; 1708 printf("%s: flush cache command: error 0x%x\n", 1709 wd->sc_dev.dv_xname, wdc_c.r_error); 1710 return EIO; 1711 } 1712 if (wdc_c.flags & AT_DF) { 1713 printf("%s: flush cache command: drive fault\n", 1714 wd->sc_dev.dv_xname); 1715 return EIO; 1716 } 1717 return 0; 1718 } 1719 1720 void 1721 wd_shutdown(void *arg) 1722 { 1723 struct wd_softc *wd = arg; 1724 wd_flushcache(wd, AT_POLL); 1725 } 1726 1727 /* 1728 * Allocate space for a ioctl queue structure. Mostly taken from 1729 * scsipi_ioctl.c 1730 */ 1731 struct wd_ioctl * 1732 wi_get(void) 1733 { 1734 struct wd_ioctl *wi; 1735 int s; 1736 1737 wi = malloc(sizeof(struct wd_ioctl), M_TEMP, M_WAITOK|M_ZERO); 1738 simple_lock_init(&wi->wi_bp.b_interlock); 1739 s = splbio(); 1740 LIST_INSERT_HEAD(&wi_head, wi, wi_list); 1741 splx(s); 1742 return (wi); 1743 } 1744 1745 /* 1746 * Free an ioctl structure and remove it from our list 1747 */ 1748 1749 void 1750 wi_free(struct wd_ioctl *wi) 1751 { 1752 int s; 1753 1754 s = splbio(); 1755 LIST_REMOVE(wi, wi_list); 1756 splx(s); 1757 free(wi, M_TEMP); 1758 } 1759 1760 /* 1761 * Find a wd_ioctl structure based on the struct buf. 1762 */ 1763 1764 struct wd_ioctl * 1765 wi_find(struct buf *bp) 1766 { 1767 struct wd_ioctl *wi; 1768 int s; 1769 1770 s = splbio(); 1771 for (wi = wi_head.lh_first; wi != 0; wi = wi->wi_list.le_next) 1772 if (bp == &wi->wi_bp) 1773 break; 1774 splx(s); 1775 return (wi); 1776 } 1777 1778 /* 1779 * Ioctl pseudo strategy routine 1780 * 1781 * This is mostly stolen from scsipi_ioctl.c:scsistrategy(). What 1782 * happens here is: 1783 * 1784 * - wdioctl() queues a wd_ioctl structure. 1785 * 1786 * - wdioctl() calls physio/wdioctlstrategy based on whether or not 1787 * user space I/O is required. If physio() is called, physio() eventually 1788 * calls wdioctlstrategy(). 1789 * 1790 * - In either case, wdioctlstrategy() calls wd->atabus->ata_exec_command() 1791 * to perform the actual command 1792 * 1793 * The reason for the use of the pseudo strategy routine is because 1794 * when doing I/O to/from user space, physio _really_ wants to be in 1795 * the loop. We could put the entire buffer into the ioctl request 1796 * structure, but that won't scale if we want to do things like download 1797 * microcode. 1798 */ 1799 1800 void 1801 wdioctlstrategy(struct buf *bp) 1802 { 1803 struct wd_ioctl *wi; 1804 struct wdc_command wdc_c; 1805 int error = 0; 1806 1807 wi = wi_find(bp); 1808 if (wi == NULL) { 1809 printf("user_strat: No ioctl\n"); 1810 error = EINVAL; 1811 goto bad; 1812 } 1813 1814 memset(&wdc_c, 0, sizeof(wdc_c)); 1815 1816 /* 1817 * Abort if physio broke up the transfer 1818 */ 1819 1820 if (bp->b_bcount != wi->wi_atareq.datalen) { 1821 printf("physio split wd ioctl request... cannot proceed\n"); 1822 error = EIO; 1823 goto bad; 1824 } 1825 1826 /* 1827 * Abort if we didn't get a buffer size that was a multiple of 1828 * our sector size (or was larger than NBBY) 1829 */ 1830 1831 if ((bp->b_bcount % wi->wi_softc->sc_dk.dk_label->d_secsize) != 0 || 1832 (bp->b_bcount / wi->wi_softc->sc_dk.dk_label->d_secsize) >= 1833 (1 << NBBY)) { 1834 error = EINVAL; 1835 goto bad; 1836 } 1837 1838 /* 1839 * Make sure a timeout was supplied in the ioctl request 1840 */ 1841 1842 if (wi->wi_atareq.timeout == 0) { 1843 error = EINVAL; 1844 goto bad; 1845 } 1846 1847 if (wi->wi_atareq.flags & ATACMD_READ) 1848 wdc_c.flags |= AT_READ; 1849 else if (wi->wi_atareq.flags & ATACMD_WRITE) 1850 wdc_c.flags |= AT_WRITE; 1851 1852 if (wi->wi_atareq.flags & ATACMD_READREG) 1853 wdc_c.flags |= AT_READREG; 1854 1855 wdc_c.flags |= AT_WAIT; 1856 1857 wdc_c.timeout = wi->wi_atareq.timeout; 1858 wdc_c.r_command = wi->wi_atareq.command; 1859 wdc_c.r_head = wi->wi_atareq.head & 0x0f; 1860 wdc_c.r_cyl = wi->wi_atareq.cylinder; 1861 wdc_c.r_sector = wi->wi_atareq.sec_num; 1862 wdc_c.r_count = wi->wi_atareq.sec_count; 1863 wdc_c.r_precomp = wi->wi_atareq.features; 1864 wdc_c.r_st_bmask = WDCS_DRDY; 1865 wdc_c.r_st_pmask = WDCS_DRDY; 1866 wdc_c.data = wi->wi_bp.b_data; 1867 wdc_c.bcount = wi->wi_bp.b_bcount; 1868 1869 if (wi->wi_softc->atabus->ata_exec_command(wi->wi_softc->drvp, &wdc_c) 1870 != WDC_COMPLETE) { 1871 wi->wi_atareq.retsts = ATACMD_ERROR; 1872 goto bad; 1873 } 1874 1875 if (wdc_c.flags & (AT_ERROR | AT_TIMEOU | AT_DF)) { 1876 if (wdc_c.flags & AT_ERROR) { 1877 wi->wi_atareq.retsts = ATACMD_ERROR; 1878 wi->wi_atareq.error = wdc_c.r_error; 1879 } else if (wdc_c.flags & AT_DF) 1880 wi->wi_atareq.retsts = ATACMD_DF; 1881 else 1882 wi->wi_atareq.retsts = ATACMD_TIMEOUT; 1883 } else { 1884 wi->wi_atareq.retsts = ATACMD_OK; 1885 if (wi->wi_atareq.flags & ATACMD_READREG) { 1886 wi->wi_atareq.head = wdc_c.r_head ; 1887 wi->wi_atareq.cylinder = wdc_c.r_cyl; 1888 wi->wi_atareq.sec_num = wdc_c.r_sector; 1889 wi->wi_atareq.sec_count = wdc_c.r_count; 1890 wi->wi_atareq.features = wdc_c.r_precomp; 1891 wi->wi_atareq.error = wdc_c.r_error; 1892 } 1893 } 1894 1895 bp->b_error = 0; 1896 biodone(bp); 1897 return; 1898 bad: 1899 bp->b_flags |= B_ERROR; 1900 bp->b_error = error; 1901 biodone(bp); 1902 } 1903
Indexes created Sun Oct 19 02:09:48 GMT 2025