wd.c revision 1.274.2.13
1 /* $NetBSD: wd.c,v 1.274.2.13 2006/11/20 21:47:05 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 1.274.2.13 2006/11/20 21:47:05 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 { "ST3160021A*", 237 WD_QUIRK_FORCE_LBA48 }, 238 { "ST3160811A*", 239 WD_QUIRK_FORCE_LBA48 }, 240 { "ST3160812A*", 241 WD_QUIRK_FORCE_LBA48 }, 242 { "ST3160023A*", 243 WD_QUIRK_FORCE_LBA48 }, 244 { "ST3160827A*", 245 WD_QUIRK_FORCE_LBA48 }, 246 /* Attempt to catch all seagate drives larger than 200GB */ 247 { "ST3[2-9][0-9][0-9][0-9][0-9][0-9][A-Z]*", 248 WD_QUIRK_FORCE_LBA48 }, 249 { NULL, 250 0 } 251 }; 252 253 static const struct wd_quirk * 254 wd_lookup_quirks(const char *name) 255 { 256 const struct wd_quirk *wdq; 257 const char *estr; 258 259 for (wdq = wd_quirk_table; wdq->wdq_match != NULL; wdq++) { 260 /* 261 * We only want exact matches (which include matches 262 * against globbing characters). 263 */ 264 if (pmatch(name, wdq->wdq_match, &estr) == 2) 265 return (wdq); 266 } 267 return (NULL); 268 } 269 270 int 271 wdprobe(struct device *parent, struct cfdata *match, void *aux) 272 { 273 struct ata_device *adev = aux; 274 275 if (adev == NULL) 276 return 0; 277 if (adev->adev_bustype->bustype_type != SCSIPI_BUSTYPE_ATA) 278 return 0; 279 280 if (match->cf_loc[ATA_HLCF_DRIVE] != ATA_HLCF_DRIVE_DEFAULT && 281 match->cf_loc[ATA_HLCF_DRIVE] != adev->adev_drv_data->drive) 282 return 0; 283 return 1; 284 } 285 286 void 287 wdattach(struct device *parent, struct device *self, void *aux) 288 { 289 struct wd_softc *wd = (void *)self; 290 struct ata_device *adev= aux; 291 int i, blank; 292 char buf[41], pbuf[9], c, *p, *q; 293 const struct wd_quirk *wdq; 294 WDCDEBUG_PRINT(("wdattach\n"), DEBUG_FUNCS | DEBUG_PROBE); 295 296 lockinit(&wd->sc_lock, PRIBIO | PCATCH, "wdlock", 0, 0); 297 298 callout_init(&wd->sc_restart_ch); 299 bufq_alloc(&wd->sc_q, BUFQ_DISK_DEFAULT_STRAT()|BUFQ_SORT_RAWBLOCK); 300 SLIST_INIT(&wd->sc_bslist); 301 302 wd->atabus = adev->adev_bustype; 303 wd->openings = adev->adev_openings; 304 wd->drvp = adev->adev_drv_data; 305 306 wd->drvp->drv_done = wddone; 307 wd->drvp->drv_softc = &wd->sc_dev; 308 309 aprint_naive("\n"); 310 311 /* read our drive info */ 312 if (wd_get_params(wd, AT_WAIT, &wd->sc_params) != 0) { 313 aprint_error("\n%s: IDENTIFY failed\n", wd->sc_dev.dv_xname); 314 return; 315 } 316 317 for (blank = 0, p = wd->sc_params.atap_model, q = buf, i = 0; 318 i < sizeof(wd->sc_params.atap_model); i++) { 319 c = *p++; 320 if (c == '\0') 321 break; 322 if (c != ' ') { 323 if (blank) { 324 *q++ = ' '; 325 blank = 0; 326 } 327 *q++ = c; 328 } else 329 blank = 1; 330 } 331 *q++ = '\0'; 332 333 aprint_normal(": <%s>\n", buf); 334 335 wdq = wd_lookup_quirks(buf); 336 if (wdq != NULL) 337 wd->sc_quirks = wdq->wdq_quirks; 338 339 if ((wd->sc_params.atap_multi & 0xff) > 1) { 340 wd->sc_multi = wd->sc_params.atap_multi & 0xff; 341 } else { 342 wd->sc_multi = 1; 343 } 344 345 aprint_normal("%s: drive supports %d-sector PIO transfers,", 346 wd->sc_dev.dv_xname, wd->sc_multi); 347 348 /* 48-bit LBA addressing */ 349 if ((wd->sc_params.atap_cmd2_en & ATA_CMD2_LBA48) != 0) 350 wd->sc_flags |= WDF_LBA48; 351 352 /* Prior to ATA-4, LBA was optional. */ 353 if ((wd->sc_params.atap_capabilities1 & WDC_CAP_LBA) != 0) 354 wd->sc_flags |= WDF_LBA; 355 #if 0 356 /* ATA-4 requires LBA. */ 357 if (wd->sc_params.atap_ataversion != 0xffff && 358 wd->sc_params.atap_ataversion >= WDC_VER_ATA4) 359 wd->sc_flags |= WDF_LBA; 360 #endif 361 362 if ((wd->sc_flags & WDF_LBA48) != 0) { 363 aprint_normal(" LBA48 addressing\n"); 364 wd->sc_capacity = 365 ((u_int64_t) wd->sc_params.__reserved6[11] << 48) | 366 ((u_int64_t) wd->sc_params.__reserved6[10] << 32) | 367 ((u_int64_t) wd->sc_params.__reserved6[9] << 16) | 368 ((u_int64_t) wd->sc_params.__reserved6[8] << 0); 369 } else if ((wd->sc_flags & WDF_LBA) != 0) { 370 aprint_normal(" LBA addressing\n"); 371 wd->sc_capacity = 372 (wd->sc_params.atap_capacity[1] << 16) | 373 wd->sc_params.atap_capacity[0]; 374 } else { 375 aprint_normal(" chs addressing\n"); 376 wd->sc_capacity = 377 wd->sc_params.atap_cylinders * 378 wd->sc_params.atap_heads * 379 wd->sc_params.atap_sectors; 380 } 381 format_bytes(pbuf, sizeof(pbuf), wd->sc_capacity * DEV_BSIZE); 382 aprint_normal("%s: %s, %d cyl, %d head, %d sec, " 383 "%d bytes/sect x %llu sectors\n", 384 self->dv_xname, pbuf, 385 (wd->sc_flags & WDF_LBA) ? (int)(wd->sc_capacity / 386 (wd->sc_params.atap_heads * wd->sc_params.atap_sectors)) : 387 wd->sc_params.atap_cylinders, 388 wd->sc_params.atap_heads, wd->sc_params.atap_sectors, 389 DEV_BSIZE, (unsigned long long)wd->sc_capacity); 390 391 WDCDEBUG_PRINT(("%s: atap_dmatiming_mimi=%d, atap_dmatiming_recom=%d\n", 392 self->dv_xname, wd->sc_params.atap_dmatiming_mimi, 393 wd->sc_params.atap_dmatiming_recom), DEBUG_PROBE); 394 /* 395 * Initialize and attach the disk structure. 396 */ 397 wd->sc_dk.dk_driver = &wddkdriver; 398 wd->sc_dk.dk_name = wd->sc_dev.dv_xname; 399 disk_attach(&wd->sc_dk); 400 wd->sc_wdc_bio.lp = wd->sc_dk.dk_label; 401 wd->sc_sdhook = shutdownhook_establish(wd_shutdown, wd); 402 if (wd->sc_sdhook == NULL) 403 aprint_error("%s: WARNING: unable to establish shutdown hook\n", 404 wd->sc_dev.dv_xname); 405 #if NRND > 0 406 rnd_attach_source(&wd->rnd_source, wd->sc_dev.dv_xname, 407 RND_TYPE_DISK, 0); 408 #endif 409 } 410 411 int 412 wdactivate(struct device *self, enum devact act) 413 { 414 int rv = 0; 415 416 switch (act) { 417 case DVACT_ACTIVATE: 418 rv = EOPNOTSUPP; 419 break; 420 421 case DVACT_DEACTIVATE: 422 /* 423 * Nothing to do; we key off the device's DVF_ACTIVATE. 424 */ 425 break; 426 } 427 return (rv); 428 } 429 430 int 431 wddetach(struct device *self, int flags) 432 { 433 struct wd_softc *sc = (struct wd_softc *)self; 434 struct buf *bp; 435 int s, bmaj, cmaj, i, mn; 436 437 /* locate the major number */ 438 bmaj = bdevsw_lookup_major(&wd_bdevsw); 439 cmaj = cdevsw_lookup_major(&wd_cdevsw); 440 441 s = splbio(); 442 443 /* Kill off any queued buffers. */ 444 while ((bp = BUFQ_GET(&sc->sc_q)) != NULL) { 445 bp->b_error = EIO; 446 bp->b_flags |= B_ERROR; 447 bp->b_resid = bp->b_bcount; 448 biodone(bp); 449 } 450 451 bufq_free(&sc->sc_q); 452 453 splx(s); 454 455 /* Nuke the vnodes for any open instances. */ 456 for (i = 0; i < MAXPARTITIONS; i++) { 457 mn = WDMINOR(self->dv_unit, i); 458 vdevgone(bmaj, mn, mn, VBLK); 459 vdevgone(cmaj, mn, mn, VCHR); 460 } 461 462 /* Detach disk. */ 463 disk_detach(&sc->sc_dk); 464 465 /* Clean out the bad sector list */ 466 while (!SLIST_EMPTY(&sc->sc_bslist)) { 467 void *head = SLIST_FIRST(&sc->sc_bslist); 468 SLIST_REMOVE_HEAD(&sc->sc_bslist, dbs_next); 469 free(head, M_TEMP); 470 } 471 sc->sc_bscount = 0; 472 473 /* Get rid of the shutdown hook. */ 474 if (sc->sc_sdhook != NULL) 475 shutdownhook_disestablish(sc->sc_sdhook); 476 477 #if NRND > 0 478 /* Unhook the entropy source. */ 479 rnd_detach_source(&sc->rnd_source); 480 #endif 481 482 lockmgr(&sc->sc_lock, LK_DRAIN, NULL); 483 484 return (0); 485 } 486 487 /* 488 * Read/write routine for a buffer. Validates the arguments and schedules the 489 * transfer. Does not wait for the transfer to complete. 490 */ 491 void 492 wdstrategy(struct buf *bp) 493 { 494 struct wd_softc *wd = device_lookup(&wd_cd, WDUNIT(bp->b_dev)); 495 struct disklabel *lp = wd->sc_dk.dk_label; 496 daddr_t blkno; 497 int s; 498 499 WDCDEBUG_PRINT(("wdstrategy (%s)\n", wd->sc_dev.dv_xname), 500 DEBUG_XFERS); 501 502 /* Valid request? */ 503 if (bp->b_blkno < 0 || 504 (bp->b_bcount % lp->d_secsize) != 0 || 505 (bp->b_bcount / lp->d_secsize) >= (1 << NBBY)) { 506 bp->b_error = EINVAL; 507 goto bad; 508 } 509 510 /* If device invalidated (e.g. media change, door open), error. */ 511 if ((wd->sc_flags & WDF_LOADED) == 0) { 512 bp->b_error = EIO; 513 goto bad; 514 } 515 516 /* If it's a null transfer, return immediately. */ 517 if (bp->b_bcount == 0) 518 goto done; 519 520 /* 521 * Do bounds checking, adjust transfer. if error, process. 522 * If end of partition, just return. 523 */ 524 if (WDPART(bp->b_dev) == RAW_PART) { 525 if (bounds_check_with_mediasize(bp, DEV_BSIZE, 526 wd->sc_capacity) <= 0) 527 goto done; 528 } else { 529 if (bounds_check_with_label(&wd->sc_dk, bp, 530 (wd->sc_flags & (WDF_WLABEL|WDF_LABELLING)) != 0) <= 0) 531 goto done; 532 } 533 534 /* 535 * Now convert the block number to absolute and put it in 536 * terms of the device's logical block size. 537 */ 538 if (lp->d_secsize >= DEV_BSIZE) 539 blkno = bp->b_blkno / (lp->d_secsize / DEV_BSIZE); 540 else 541 blkno = bp->b_blkno * (DEV_BSIZE / lp->d_secsize); 542 543 if (WDPART(bp->b_dev) != RAW_PART) 544 blkno += lp->d_partitions[WDPART(bp->b_dev)].p_offset; 545 546 bp->b_rawblkno = blkno; 547 548 /* 549 * If the transfer about to be attempted contains only a block that 550 * is known to be bad then return an error for the transfer without 551 * even attempting to start a transfer up under the premis that we 552 * will just end up doing more retries for a transfer that will end 553 * up failing again. 554 * XXX:SMP - mutex required to protect with DIOCBSFLUSH 555 */ 556 if (__predict_false(!SLIST_EMPTY(&wd->sc_bslist))) { 557 struct disk_badsectors *dbs; 558 daddr_t maxblk = blkno + (bp->b_bcount >> DEV_BSHIFT) - 1; 559 560 SLIST_FOREACH(dbs, &wd->sc_bslist, dbs_next) 561 if ((dbs->dbs_min <= blkno && blkno <= dbs->dbs_max) || 562 (dbs->dbs_min <= maxblk && maxblk <= dbs->dbs_max)){ 563 bp->b_error = EIO; 564 goto bad; 565 } 566 } 567 568 /* Queue transfer on drive, activate drive and controller if idle. */ 569 s = splbio(); 570 BUFQ_PUT(&wd->sc_q, bp); 571 wdstart(wd); 572 splx(s); 573 return; 574 bad: 575 bp->b_flags |= B_ERROR; 576 done: 577 /* Toss transfer; we're done early. */ 578 bp->b_resid = bp->b_bcount; 579 biodone(bp); 580 } 581 582 /* 583 * Queue a drive for I/O. 584 */ 585 void 586 wdstart(void *arg) 587 { 588 struct wd_softc *wd = arg; 589 struct buf *bp = NULL; 590 591 WDCDEBUG_PRINT(("wdstart %s\n", wd->sc_dev.dv_xname), 592 DEBUG_XFERS); 593 while (wd->openings > 0) { 594 595 /* Is there a buf for us ? */ 596 if ((bp = BUFQ_GET(&wd->sc_q)) == NULL) 597 return; 598 599 /* 600 * Make the command. First lock the device 601 */ 602 wd->openings--; 603 604 wd->retries = 0; 605 __wdstart(wd, bp); 606 } 607 } 608 609 static void 610 wd_split_mod15_write(struct buf *bp) 611 { 612 struct buf *obp = bp->b_private; 613 struct wd_softc *sc = wd_cd.cd_devs[DISKUNIT(obp->b_dev)]; 614 615 if (__predict_false(bp->b_flags & B_ERROR) != 0) { 616 /* 617 * Propagate the error. If this was the first half of 618 * the original transfer, make sure to account for that 619 * in the residual. 620 */ 621 if (bp->b_data == obp->b_data) 622 bp->b_resid += bp->b_bcount; 623 goto done; 624 } 625 626 /* 627 * If this was the second half of the transfer, we're all done! 628 */ 629 if (bp->b_data != obp->b_data) 630 goto done; 631 632 /* 633 * Advance the pointer to the second half and issue that command 634 * using the same opening. 635 */ 636 bp->b_flags = obp->b_flags | B_CALL; 637 bp->b_data += bp->b_bcount; 638 bp->b_blkno += (bp->b_bcount / 512); 639 bp->b_rawblkno += (bp->b_bcount / 512); 640 __wdstart(sc, bp); 641 return; 642 643 done: 644 obp->b_flags |= (bp->b_flags & (B_EINTR|B_ERROR)); 645 obp->b_error = bp->b_error; 646 obp->b_resid = bp->b_resid; 647 pool_put(&bufpool, bp); 648 biodone(obp); 649 sc->openings++; 650 /* wddone() will call wdstart() */ 651 } 652 653 void 654 __wdstart(struct wd_softc *wd, struct buf *bp) 655 { 656 657 /* 658 * Deal with the "split mod15 write" quirk. We just divide the 659 * transfer in two, doing the first half and then then second half 660 * with the same command opening. 661 * 662 * Note we MUST do this here, because we can't let insertion 663 * into the bufq cause the transfers to be re-merged. 664 */ 665 if (__predict_false((wd->sc_quirks & WD_QUIRK_SPLIT_MOD15_WRITE) != 0 && 666 (bp->b_flags & B_READ) == 0 && 667 bp->b_bcount > 512 && 668 ((bp->b_bcount / 512) % 15) == 1)) { 669 struct buf *nbp; 670 671 /* already at splbio */ 672 nbp = pool_get(&bufpool, PR_NOWAIT); 673 if (__predict_false(nbp == NULL)) { 674 /* No memory -- fail the iop. */ 675 bp->b_error = ENOMEM; 676 bp->b_flags |= B_ERROR; 677 bp->b_resid = bp->b_bcount; 678 biodone(bp); 679 wd->openings++; 680 return; 681 } 682 683 BUF_INIT(nbp); 684 nbp->b_error = 0; 685 nbp->b_proc = bp->b_proc; 686 nbp->b_vp = NULLVP; 687 nbp->b_dev = bp->b_dev; 688 689 nbp->b_bcount = bp->b_bcount / 2; 690 nbp->b_bufsize = bp->b_bcount / 2; 691 nbp->b_data = bp->b_data; 692 693 nbp->b_blkno = bp->b_blkno; 694 nbp->b_rawblkno = bp->b_rawblkno; 695 696 nbp->b_flags = bp->b_flags | B_CALL; 697 nbp->b_iodone = wd_split_mod15_write; 698 699 /* Put ptr to orig buf in b_private and use new buf */ 700 nbp->b_private = bp; 701 702 BIO_COPYPRIO(nbp, bp); 703 704 bp = nbp; 705 } 706 707 wd->sc_wdc_bio.blkno = bp->b_rawblkno; 708 wd->sc_wdc_bio.blkdone =0; 709 wd->sc_bp = bp; 710 /* 711 * If we're retrying, retry in single-sector mode. This will give us 712 * the sector number of the problem, and will eventually allow the 713 * transfer to succeed. 714 */ 715 if (wd->retries >= WDIORETRIES_SINGLE) 716 wd->sc_wdc_bio.flags = ATA_SINGLE; 717 else 718 wd->sc_wdc_bio.flags = 0; 719 if (wd->sc_flags & WDF_LBA48 && 720 (wd->sc_wdc_bio.blkno > LBA48_THRESHOLD || 721 (wd->sc_quirks & WD_QUIRK_FORCE_LBA48) != 0)) 722 wd->sc_wdc_bio.flags |= ATA_LBA48; 723 if (wd->sc_flags & WDF_LBA) 724 wd->sc_wdc_bio.flags |= ATA_LBA; 725 if (bp->b_flags & B_READ) 726 wd->sc_wdc_bio.flags |= ATA_READ; 727 wd->sc_wdc_bio.bcount = bp->b_bcount; 728 wd->sc_wdc_bio.databuf = bp->b_data; 729 /* Instrumentation. */ 730 disk_busy(&wd->sc_dk); 731 switch (wd->atabus->ata_bio(wd->drvp, &wd->sc_wdc_bio)) { 732 case WDC_TRY_AGAIN: 733 callout_reset(&wd->sc_restart_ch, hz, wdrestart, wd); 734 break; 735 case WDC_QUEUED: 736 case WDC_COMPLETE: 737 break; 738 default: 739 panic("__wdstart: bad return code from ata_bio()"); 740 } 741 } 742 743 void 744 wddone(void *v) 745 { 746 struct wd_softc *wd = v; 747 struct buf *bp = wd->sc_bp; 748 const char *errmsg; 749 int do_perror = 0; 750 WDCDEBUG_PRINT(("wddone %s\n", wd->sc_dev.dv_xname), 751 DEBUG_XFERS); 752 753 if (bp == NULL) 754 return; 755 bp->b_resid = wd->sc_wdc_bio.bcount; 756 switch (wd->sc_wdc_bio.error) { 757 case ERR_DMA: 758 errmsg = "DMA error"; 759 goto retry; 760 case ERR_DF: 761 errmsg = "device fault"; 762 goto retry; 763 case TIMEOUT: 764 errmsg = "device timeout"; 765 goto retry; 766 case ERR_RESET: 767 errmsg = "channel reset"; 768 goto retry2; 769 case ERROR: 770 /* Don't care about media change bits */ 771 if (wd->sc_wdc_bio.r_error != 0 && 772 (wd->sc_wdc_bio.r_error & ~(WDCE_MC | WDCE_MCR)) == 0) 773 goto noerror; 774 errmsg = "error"; 775 do_perror = 1; 776 retry: /* Just reset and retry. Can we do more ? */ 777 wd->atabus->ata_reset_channel(wd->drvp, AT_RST_NOCMD); 778 retry2: 779 diskerr(bp, "wd", errmsg, LOG_PRINTF, 780 wd->sc_wdc_bio.blkdone, wd->sc_dk.dk_label); 781 if (wd->retries < WDIORETRIES) 782 printf(", retrying\n"); 783 if (do_perror) 784 wdperror(wd); 785 if (wd->retries < WDIORETRIES) { 786 wd->retries++; 787 callout_reset(&wd->sc_restart_ch, RECOVERYTIME, 788 wdrestart, wd); 789 return; 790 } 791 printf("\n"); 792 793 /* 794 * Not all errors indicate a failed block but those that do, 795 * put the block on the bad-block list for the device. Only 796 * do this for reads because the drive should do it for writes, 797 * itself, according to Manuel. 798 */ 799 if ((bp->b_flags & B_READ) && 800 ((wd->drvp->ata_vers >= 4 && wd->sc_wdc_bio.r_error & 64) || 801 (wd->drvp->ata_vers < 4 && wd->sc_wdc_bio.r_error & 192))) { 802 struct disk_badsectors *dbs; 803 804 dbs = malloc(sizeof *dbs, M_TEMP, M_WAITOK); 805 dbs->dbs_min = bp->b_rawblkno; 806 dbs->dbs_max = dbs->dbs_min + (bp->b_bcount >> DEV_BSHIFT) - 1; 807 microtime(&dbs->dbs_failedat); 808 SLIST_INSERT_HEAD(&wd->sc_bslist, dbs, dbs_next); 809 wd->sc_bscount++; 810 } 811 812 bp->b_flags |= B_ERROR; 813 bp->b_error = EIO; 814 break; 815 case NOERROR: 816 noerror: if ((wd->sc_wdc_bio.flags & ATA_CORR) || wd->retries > 0) 817 printf("%s: soft error (corrected)\n", 818 wd->sc_dev.dv_xname); 819 break; 820 case ERR_NODEV: 821 bp->b_flags |= B_ERROR; 822 bp->b_error = EIO; 823 break; 824 } 825 disk_unbusy(&wd->sc_dk, (bp->b_bcount - bp->b_resid), 826 (bp->b_flags & B_READ)); 827 #if NRND > 0 828 rnd_add_uint32(&wd->rnd_source, bp->b_blkno); 829 #endif 830 /* XXX Yuck, but we don't want to increment openings in this case */ 831 if (__predict_false((bp->b_flags & B_CALL) != 0 && 832 bp->b_iodone == wd_split_mod15_write)) 833 biodone(bp); 834 else { 835 biodone(bp); 836 wd->openings++; 837 } 838 wdstart(wd); 839 } 840 841 void 842 wdrestart(void *v) 843 { 844 struct wd_softc *wd = v; 845 struct buf *bp = wd->sc_bp; 846 int s; 847 WDCDEBUG_PRINT(("wdrestart %s\n", wd->sc_dev.dv_xname), 848 DEBUG_XFERS); 849 850 s = splbio(); 851 __wdstart(v, bp); 852 splx(s); 853 } 854 855 int 856 wdread(dev_t dev, struct uio *uio, int flags) 857 { 858 859 WDCDEBUG_PRINT(("wdread\n"), DEBUG_XFERS); 860 return (physio(wdstrategy, NULL, dev, B_READ, minphys, uio)); 861 } 862 863 int 864 wdwrite(dev_t dev, struct uio *uio, int flags) 865 { 866 867 WDCDEBUG_PRINT(("wdwrite\n"), DEBUG_XFERS); 868 return (physio(wdstrategy, NULL, dev, B_WRITE, minphys, uio)); 869 } 870 871 int 872 wdopen(dev_t dev, int flag, int fmt, struct proc *p) 873 { 874 struct wd_softc *wd; 875 int part, error; 876 877 WDCDEBUG_PRINT(("wdopen\n"), DEBUG_FUNCS); 878 wd = device_lookup(&wd_cd, WDUNIT(dev)); 879 if (wd == NULL) 880 return (ENXIO); 881 882 if ((wd->sc_dev.dv_flags & DVF_ACTIVE) == 0) 883 return (ENODEV); 884 885 /* 886 * If this is the first open of this device, add a reference 887 * to the adapter. 888 */ 889 if (wd->sc_dk.dk_openmask == 0 && 890 (error = wd->atabus->ata_addref(wd->drvp)) != 0) 891 return (error); 892 893 if ((error = lockmgr(&wd->sc_lock, LK_EXCLUSIVE, NULL)) != 0) 894 goto bad4; 895 896 if (wd->sc_dk.dk_openmask != 0) { 897 /* 898 * If any partition is open, but the disk has been invalidated, 899 * disallow further opens. 900 */ 901 if ((wd->sc_flags & WDF_LOADED) == 0) { 902 error = EIO; 903 goto bad3; 904 } 905 } else { 906 if ((wd->sc_flags & WDF_LOADED) == 0) { 907 wd->sc_flags |= WDF_LOADED; 908 909 /* Load the physical device parameters. */ 910 wd_get_params(wd, AT_WAIT, &wd->sc_params); 911 912 /* Load the partition info if not already loaded. */ 913 wdgetdisklabel(wd); 914 } 915 } 916 917 part = WDPART(dev); 918 919 /* Check that the partition exists. */ 920 if (part != RAW_PART && 921 (part >= wd->sc_dk.dk_label->d_npartitions || 922 wd->sc_dk.dk_label->d_partitions[part].p_fstype == FS_UNUSED)) { 923 error = ENXIO; 924 goto bad; 925 } 926 927 /* Insure only one open at a time. */ 928 switch (fmt) { 929 case S_IFCHR: 930 wd->sc_dk.dk_copenmask |= (1 << part); 931 break; 932 case S_IFBLK: 933 wd->sc_dk.dk_bopenmask |= (1 << part); 934 break; 935 } 936 wd->sc_dk.dk_openmask = 937 wd->sc_dk.dk_copenmask | wd->sc_dk.dk_bopenmask; 938 939 lockmgr(&wd->sc_lock, LK_RELEASE, NULL); 940 return 0; 941 942 bad: 943 if (wd->sc_dk.dk_openmask == 0) { 944 } 945 946 bad3: 947 lockmgr(&wd->sc_lock, LK_RELEASE, NULL); 948 bad4: 949 if (wd->sc_dk.dk_openmask == 0) 950 wd->atabus->ata_delref(wd->drvp); 951 return error; 952 } 953 954 int 955 wdclose(dev_t dev, int flag, int fmt, struct proc *p) 956 { 957 struct wd_softc *wd = device_lookup(&wd_cd, WDUNIT(dev)); 958 int part = WDPART(dev); 959 int error; 960 961 WDCDEBUG_PRINT(("wdclose\n"), DEBUG_FUNCS); 962 if ((error = lockmgr(&wd->sc_lock, LK_EXCLUSIVE, NULL)) != 0) 963 return error; 964 965 switch (fmt) { 966 case S_IFCHR: 967 wd->sc_dk.dk_copenmask &= ~(1 << part); 968 break; 969 case S_IFBLK: 970 wd->sc_dk.dk_bopenmask &= ~(1 << part); 971 break; 972 } 973 wd->sc_dk.dk_openmask = 974 wd->sc_dk.dk_copenmask | wd->sc_dk.dk_bopenmask; 975 976 if (wd->sc_dk.dk_openmask == 0) { 977 wd_flushcache(wd, AT_WAIT); 978 /* XXXX Must wait for I/O to complete! */ 979 980 if (! (wd->sc_flags & WDF_KLABEL)) 981 wd->sc_flags &= ~WDF_LOADED; 982 983 wd->atabus->ata_delref(wd->drvp); 984 } 985 986 lockmgr(&wd->sc_lock, LK_RELEASE, NULL); 987 return 0; 988 } 989 990 void 991 wdgetdefaultlabel(struct wd_softc *wd, struct disklabel *lp) 992 { 993 994 WDCDEBUG_PRINT(("wdgetdefaultlabel\n"), DEBUG_FUNCS); 995 memset(lp, 0, sizeof(struct disklabel)); 996 997 lp->d_secsize = DEV_BSIZE; 998 lp->d_ntracks = wd->sc_params.atap_heads; 999 lp->d_nsectors = wd->sc_params.atap_sectors; 1000 lp->d_ncylinders = (wd->sc_flags & WDF_LBA) ? wd->sc_capacity / 1001 (wd->sc_params.atap_heads * wd->sc_params.atap_sectors) : 1002 wd->sc_params.atap_cylinders; 1003 lp->d_secpercyl = lp->d_ntracks * lp->d_nsectors; 1004 1005 if (strcmp(wd->sc_params.atap_model, "ST506") == 0) 1006 lp->d_type = DTYPE_ST506; 1007 else 1008 lp->d_type = DTYPE_ESDI; 1009 1010 strncpy(lp->d_typename, wd->sc_params.atap_model, 16); 1011 strncpy(lp->d_packname, "fictitious", 16); 1012 if (wd->sc_capacity > UINT32_MAX) 1013 lp->d_secperunit = UINT32_MAX; 1014 else 1015 lp->d_secperunit = wd->sc_capacity; 1016 lp->d_rpm = 3600; 1017 lp->d_interleave = 1; 1018 lp->d_flags = 0; 1019 1020 lp->d_partitions[RAW_PART].p_offset = 0; 1021 lp->d_partitions[RAW_PART].p_size = 1022 lp->d_secperunit * (lp->d_secsize / DEV_BSIZE); 1023 lp->d_partitions[RAW_PART].p_fstype = FS_UNUSED; 1024 lp->d_npartitions = RAW_PART + 1; 1025 1026 lp->d_magic = DISKMAGIC; 1027 lp->d_magic2 = DISKMAGIC; 1028 lp->d_checksum = dkcksum(lp); 1029 } 1030 1031 /* 1032 * Fabricate a default disk label, and try to read the correct one. 1033 */ 1034 void 1035 wdgetdisklabel(struct wd_softc *wd) 1036 { 1037 struct disklabel *lp = wd->sc_dk.dk_label; 1038 const char *errstring; 1039 1040 WDCDEBUG_PRINT(("wdgetdisklabel\n"), DEBUG_FUNCS); 1041 1042 memset(wd->sc_dk.dk_cpulabel, 0, sizeof(struct cpu_disklabel)); 1043 1044 wdgetdefaultlabel(wd, lp); 1045 1046 wd->sc_badsect[0] = -1; 1047 1048 if (wd->drvp->state > RESET) 1049 wd->drvp->drive_flags |= DRIVE_RESET; 1050 errstring = readdisklabel(MAKEWDDEV(0, wd->sc_dev.dv_unit, RAW_PART), 1051 wdstrategy, lp, wd->sc_dk.dk_cpulabel); 1052 if (errstring) { 1053 /* 1054 * This probably happened because the drive's default 1055 * geometry doesn't match the DOS geometry. We 1056 * assume the DOS geometry is now in the label and try 1057 * again. XXX This is a kluge. 1058 */ 1059 if (wd->drvp->state > RESET) 1060 wd->drvp->drive_flags |= DRIVE_RESET; 1061 errstring = readdisklabel(MAKEWDDEV(0, wd->sc_dev.dv_unit, 1062 RAW_PART), wdstrategy, lp, wd->sc_dk.dk_cpulabel); 1063 } 1064 if (errstring) { 1065 printf("%s: %s\n", wd->sc_dev.dv_xname, errstring); 1066 return; 1067 } 1068 1069 if (wd->drvp->state > RESET) 1070 wd->drvp->drive_flags |= DRIVE_RESET; 1071 #ifdef HAS_BAD144_HANDLING 1072 if ((lp->d_flags & D_BADSECT) != 0) 1073 bad144intern(wd); 1074 #endif 1075 } 1076 1077 void 1078 wdperror(const struct wd_softc *wd) 1079 { 1080 static const char *const errstr0_3[] = {"address mark not found", 1081 "track 0 not found", "aborted command", "media change requested", 1082 "id not found", "media changed", "uncorrectable data error", 1083 "bad block detected"}; 1084 static const char *const errstr4_5[] = { 1085 "obsolete (address mark not found)", 1086 "no media/write protected", "aborted command", 1087 "media change requested", "id not found", "media changed", 1088 "uncorrectable data error", "interface CRC error"}; 1089 const char *const *errstr; 1090 int i; 1091 char *sep = ""; 1092 1093 const char *devname = wd->sc_dev.dv_xname; 1094 struct ata_drive_datas *drvp = wd->drvp; 1095 int errno = wd->sc_wdc_bio.r_error; 1096 1097 if (drvp->ata_vers >= 4) 1098 errstr = errstr4_5; 1099 else 1100 errstr = errstr0_3; 1101 1102 printf("%s: (", devname); 1103 1104 if (errno == 0) 1105 printf("error not notified"); 1106 1107 for (i = 0; i < 8; i++) { 1108 if (errno & (1 << i)) { 1109 printf("%s%s", sep, errstr[i]); 1110 sep = ", "; 1111 } 1112 } 1113 printf(")\n"); 1114 } 1115 1116 int 1117 wdioctl(dev_t dev, u_long xfer, caddr_t addr, int flag, struct proc *p) 1118 { 1119 struct wd_softc *wd = device_lookup(&wd_cd, WDUNIT(dev)); 1120 int error = 0; 1121 #ifdef __HAVE_OLD_DISKLABEL 1122 struct disklabel *newlabel = NULL; 1123 #endif 1124 1125 WDCDEBUG_PRINT(("wdioctl\n"), DEBUG_FUNCS); 1126 1127 if ((wd->sc_flags & WDF_LOADED) == 0) 1128 return EIO; 1129 1130 switch (xfer) { 1131 #ifdef HAS_BAD144_HANDLING 1132 case DIOCSBAD: 1133 if ((flag & FWRITE) == 0) 1134 return EBADF; 1135 wd->sc_dk.dk_cpulabel->bad = *(struct dkbad *)addr; 1136 wd->sc_dk.dk_label->d_flags |= D_BADSECT; 1137 bad144intern(wd); 1138 return 0; 1139 #endif 1140 1141 case DIOCBSLIST : 1142 { 1143 u_int32_t count, missing, skip; 1144 struct disk_badsecinfo dbsi; 1145 struct disk_badsectors *dbs; 1146 size_t available; 1147 caddr_t laddr; 1148 1149 dbsi = *(struct disk_badsecinfo *)addr; 1150 missing = wd->sc_bscount; 1151 count = 0; 1152 available = dbsi.dbsi_bufsize; 1153 skip = dbsi.dbsi_skip; 1154 laddr = dbsi.dbsi_buffer; 1155 1156 /* 1157 * We start this loop with the expectation that all of the 1158 * entries will be missed and decrement this counter each 1159 * time we either skip over one (already copied out) or 1160 * we actually copy it back to user space. The structs 1161 * holding the bad sector information are copied directly 1162 * back to user space whilst the summary is returned via 1163 * the struct passed in via the ioctl. 1164 */ 1165 SLIST_FOREACH(dbs, &wd->sc_bslist, dbs_next) { 1166 if (skip > 0) { 1167 missing--; 1168 skip--; 1169 continue; 1170 } 1171 if (available < sizeof(*dbs)) 1172 break; 1173 available -= sizeof(*dbs); 1174 copyout(dbs, laddr, sizeof(*dbs)); 1175 laddr += sizeof(*dbs); 1176 missing--; 1177 count++; 1178 } 1179 dbsi.dbsi_left = missing; 1180 dbsi.dbsi_copied = count; 1181 *(struct disk_badsecinfo *)addr = dbsi; 1182 return 0; 1183 } 1184 1185 case DIOCBSFLUSH : 1186 /* Clean out the bad sector list */ 1187 while (!SLIST_EMPTY(&wd->sc_bslist)) { 1188 void *head = SLIST_FIRST(&wd->sc_bslist); 1189 SLIST_REMOVE_HEAD(&wd->sc_bslist, dbs_next); 1190 free(head, M_TEMP); 1191 } 1192 wd->sc_bscount = 0; 1193 return 0; 1194 1195 case DIOCGDINFO: 1196 *(struct disklabel *)addr = *(wd->sc_dk.dk_label); 1197 return 0; 1198 #ifdef __HAVE_OLD_DISKLABEL 1199 case ODIOCGDINFO: 1200 newlabel = malloc(sizeof *newlabel, M_TEMP, M_WAITOK); 1201 if (newlabel == NULL) 1202 return EIO; 1203 *newlabel = *(wd->sc_dk.dk_label); 1204 if (newlabel->d_npartitions <= OLDMAXPARTITIONS) 1205 memcpy(addr, newlabel, sizeof (struct olddisklabel)); 1206 else 1207 error = ENOTTY; 1208 free(newlabel, M_TEMP); 1209 return error; 1210 #endif 1211 1212 case DIOCGPART: 1213 ((struct partinfo *)addr)->disklab = wd->sc_dk.dk_label; 1214 ((struct partinfo *)addr)->part = 1215 &wd->sc_dk.dk_label->d_partitions[WDPART(dev)]; 1216 return 0; 1217 1218 case DIOCWDINFO: 1219 case DIOCSDINFO: 1220 #ifdef __HAVE_OLD_DISKLABEL 1221 case ODIOCWDINFO: 1222 case ODIOCSDINFO: 1223 #endif 1224 { 1225 struct disklabel *lp; 1226 1227 if ((flag & FWRITE) == 0) 1228 return EBADF; 1229 1230 #ifdef __HAVE_OLD_DISKLABEL 1231 if (xfer == ODIOCSDINFO || xfer == ODIOCWDINFO) { 1232 newlabel = malloc(sizeof *newlabel, M_TEMP, M_WAITOK); 1233 if (newlabel == NULL) 1234 return EIO; 1235 memset(newlabel, 0, sizeof newlabel); 1236 memcpy(newlabel, addr, sizeof (struct olddisklabel)); 1237 lp = newlabel; 1238 } else 1239 #endif 1240 lp = (struct disklabel *)addr; 1241 1242 if ((error = lockmgr(&wd->sc_lock, LK_EXCLUSIVE, NULL)) != 0) 1243 goto bad; 1244 wd->sc_flags |= WDF_LABELLING; 1245 1246 error = setdisklabel(wd->sc_dk.dk_label, 1247 lp, /*wd->sc_dk.dk_openmask : */0, 1248 wd->sc_dk.dk_cpulabel); 1249 if (error == 0) { 1250 if (wd->drvp->state > RESET) 1251 wd->drvp->drive_flags |= DRIVE_RESET; 1252 if (xfer == DIOCWDINFO 1253 #ifdef __HAVE_OLD_DISKLABEL 1254 || xfer == ODIOCWDINFO 1255 #endif 1256 ) 1257 error = writedisklabel(WDLABELDEV(dev), 1258 wdstrategy, wd->sc_dk.dk_label, 1259 wd->sc_dk.dk_cpulabel); 1260 } 1261 1262 wd->sc_flags &= ~WDF_LABELLING; 1263 lockmgr(&wd->sc_lock, LK_RELEASE, NULL); 1264 bad: 1265 #ifdef __HAVE_OLD_DISKLABEL 1266 if (newlabel != NULL) 1267 free(newlabel, M_TEMP); 1268 #endif 1269 return error; 1270 } 1271 1272 case DIOCKLABEL: 1273 if (*(int *)addr) 1274 wd->sc_flags |= WDF_KLABEL; 1275 else 1276 wd->sc_flags &= ~WDF_KLABEL; 1277 return 0; 1278 1279 case DIOCWLABEL: 1280 if ((flag & FWRITE) == 0) 1281 return EBADF; 1282 if (*(int *)addr) 1283 wd->sc_flags |= WDF_WLABEL; 1284 else 1285 wd->sc_flags &= ~WDF_WLABEL; 1286 return 0; 1287 1288 case DIOCGDEFLABEL: 1289 wdgetdefaultlabel(wd, (struct disklabel *)addr); 1290 return 0; 1291 #ifdef __HAVE_OLD_DISKLABEL 1292 case ODIOCGDEFLABEL: 1293 newlabel = malloc(sizeof *newlabel, M_TEMP, M_WAITOK); 1294 if (newlabel == NULL) 1295 return EIO; 1296 wdgetdefaultlabel(wd, newlabel); 1297 if (newlabel->d_npartitions <= OLDMAXPARTITIONS) 1298 memcpy(addr, &newlabel, sizeof (struct olddisklabel)); 1299 else 1300 error = ENOTTY; 1301 free(newlabel, M_TEMP); 1302 return error; 1303 #endif 1304 1305 #ifdef notyet 1306 case DIOCWFORMAT: 1307 if ((flag & FWRITE) == 0) 1308 return EBADF; 1309 { 1310 register struct format_op *fop; 1311 struct iovec aiov; 1312 struct uio auio; 1313 1314 fop = (struct format_op *)addr; 1315 aiov.iov_base = fop->df_buf; 1316 aiov.iov_len = fop->df_count; 1317 auio.uio_iov = &aiov; 1318 auio.uio_iovcnt = 1; 1319 auio.uio_resid = fop->df_count; 1320 auio.uio_segflg = 0; 1321 auio.uio_offset = 1322 fop->df_startblk * wd->sc_dk.dk_label->d_secsize; 1323 auio.uio_procp = p; 1324 error = physio(wdformat, NULL, dev, B_WRITE, minphys, 1325 &auio); 1326 fop->df_count -= auio.uio_resid; 1327 fop->df_reg[0] = wdc->sc_status; 1328 fop->df_reg[1] = wdc->sc_error; 1329 return error; 1330 } 1331 #endif 1332 case DIOCGCACHE: 1333 return wd_getcache(wd, (int *)addr); 1334 1335 case DIOCSCACHE: 1336 return wd_setcache(wd, *(int *)addr); 1337 1338 case DIOCCACHESYNC: 1339 return wd_flushcache(wd, AT_WAIT); 1340 1341 case ATAIOCCOMMAND: 1342 /* 1343 * Make sure this command is (relatively) safe first 1344 */ 1345 if ((((atareq_t *) addr)->flags & ATACMD_READ) == 0 && 1346 (flag & FWRITE) == 0) 1347 return (EBADF); 1348 { 1349 struct wd_ioctl *wi; 1350 atareq_t *atareq = (atareq_t *) addr; 1351 int error; 1352 1353 wi = wi_get(); 1354 wi->wi_softc = wd; 1355 wi->wi_atareq = *atareq; 1356 1357 if (atareq->datalen && atareq->flags & 1358 (ATACMD_READ | ATACMD_WRITE)) { 1359 wi->wi_iov.iov_base = atareq->databuf; 1360 wi->wi_iov.iov_len = atareq->datalen; 1361 wi->wi_uio.uio_iov = &wi->wi_iov; 1362 wi->wi_uio.uio_iovcnt = 1; 1363 wi->wi_uio.uio_resid = atareq->datalen; 1364 wi->wi_uio.uio_offset = 0; 1365 wi->wi_uio.uio_segflg = UIO_USERSPACE; 1366 wi->wi_uio.uio_rw = 1367 (atareq->flags & ATACMD_READ) ? B_READ : B_WRITE; 1368 wi->wi_uio.uio_procp = p; 1369 error = physio(wdioctlstrategy, &wi->wi_bp, dev, 1370 (atareq->flags & ATACMD_READ) ? B_READ : B_WRITE, 1371 minphys, &wi->wi_uio); 1372 } else { 1373 /* No need to call physio if we don't have any 1374 user data */ 1375 wi->wi_bp.b_flags = 0; 1376 wi->wi_bp.b_data = 0; 1377 wi->wi_bp.b_bcount = 0; 1378 wi->wi_bp.b_dev = 0; 1379 wi->wi_bp.b_proc = p; 1380 wdioctlstrategy(&wi->wi_bp); 1381 error = wi->wi_bp.b_error; 1382 } 1383 *atareq = wi->wi_atareq; 1384 wi_free(wi); 1385 return(error); 1386 } 1387 1388 default: 1389 return ENOTTY; 1390 } 1391 1392 #ifdef DIAGNOSTIC 1393 panic("wdioctl: impossible"); 1394 #endif 1395 } 1396 1397 #ifdef B_FORMAT 1398 int 1399 wdformat(struct buf *bp) 1400 { 1401 1402 bp->b_flags |= B_FORMAT; 1403 return wdstrategy(bp); 1404 } 1405 #endif 1406 1407 int 1408 wdsize(dev_t dev) 1409 { 1410 struct wd_softc *wd; 1411 int part, omask; 1412 int size; 1413 1414 WDCDEBUG_PRINT(("wdsize\n"), DEBUG_FUNCS); 1415 1416 wd = device_lookup(&wd_cd, WDUNIT(dev)); 1417 if (wd == NULL) 1418 return (-1); 1419 1420 part = WDPART(dev); 1421 omask = wd->sc_dk.dk_openmask & (1 << part); 1422 1423 if (omask == 0 && wdopen(dev, 0, S_IFBLK, NULL) != 0) 1424 return (-1); 1425 if (wd->sc_dk.dk_label->d_partitions[part].p_fstype != FS_SWAP) 1426 size = -1; 1427 else 1428 size = wd->sc_dk.dk_label->d_partitions[part].p_size * 1429 (wd->sc_dk.dk_label->d_secsize / DEV_BSIZE); 1430 if (omask == 0 && wdclose(dev, 0, S_IFBLK, NULL) != 0) 1431 return (-1); 1432 return (size); 1433 } 1434 1435 /* #define WD_DUMP_NOT_TRUSTED if you just want to watch */ 1436 static int wddoingadump = 0; 1437 static int wddumprecalibrated = 0; 1438 static int wddumpmulti = 1; 1439 1440 /* 1441 * Dump core after a system crash. 1442 */ 1443 int 1444 wddump(dev_t dev, daddr_t blkno, caddr_t va, size_t size) 1445 { 1446 struct wd_softc *wd; /* disk unit to do the I/O */ 1447 struct disklabel *lp; /* disk's disklabel */ 1448 int part, err; 1449 int nblks; /* total number of sectors left to write */ 1450 1451 /* Check if recursive dump; if so, punt. */ 1452 if (wddoingadump) 1453 return EFAULT; 1454 wddoingadump = 1; 1455 1456 wd = device_lookup(&wd_cd, WDUNIT(dev)); 1457 if (wd == NULL) 1458 return (ENXIO); 1459 1460 part = WDPART(dev); 1461 1462 /* Convert to disk sectors. Request must be a multiple of size. */ 1463 lp = wd->sc_dk.dk_label; 1464 if ((size % lp->d_secsize) != 0) 1465 return EFAULT; 1466 nblks = size / lp->d_secsize; 1467 blkno = blkno / (lp->d_secsize / DEV_BSIZE); 1468 1469 /* Check transfer bounds against partition size. */ 1470 if ((blkno < 0) || ((blkno + nblks) > lp->d_partitions[part].p_size)) 1471 return EINVAL; 1472 1473 /* Offset block number to start of partition. */ 1474 blkno += lp->d_partitions[part].p_offset; 1475 1476 /* Recalibrate, if first dump transfer. */ 1477 if (wddumprecalibrated == 0) { 1478 wddumpmulti = wd->sc_multi; 1479 wddumprecalibrated = 1; 1480 wd->atabus->ata_reset_channel(wd->drvp, AT_POLL | AT_RST_EMERG); 1481 wd->drvp->state = RESET; 1482 } 1483 1484 while (nblks > 0) { 1485 wd->sc_bp = NULL; 1486 wd->sc_wdc_bio.blkno = blkno; 1487 wd->sc_wdc_bio.flags = ATA_POLL; 1488 if (wd->sc_flags & WDF_LBA48 && 1489 (blkno > LBA48_THRESHOLD || 1490 (wd->sc_quirks & WD_QUIRK_FORCE_LBA48) != 0)) 1491 wd->sc_wdc_bio.flags |= ATA_LBA48; 1492 if (wd->sc_flags & WDF_LBA) 1493 wd->sc_wdc_bio.flags |= ATA_LBA; 1494 wd->sc_wdc_bio.bcount = 1495 min(nblks, wddumpmulti) * lp->d_secsize; 1496 wd->sc_wdc_bio.databuf = va; 1497 #ifndef WD_DUMP_NOT_TRUSTED 1498 switch (wd->atabus->ata_bio(wd->drvp, &wd->sc_wdc_bio)) { 1499 case WDC_TRY_AGAIN: 1500 panic("wddump: try again"); 1501 break; 1502 case WDC_QUEUED: 1503 panic("wddump: polled command has been queued"); 1504 break; 1505 case WDC_COMPLETE: 1506 break; 1507 } 1508 switch(wd->sc_wdc_bio.error) { 1509 case TIMEOUT: 1510 printf("wddump: device timed out"); 1511 err = EIO; 1512 break; 1513 case ERR_DF: 1514 printf("wddump: drive fault"); 1515 err = EIO; 1516 break; 1517 case ERR_DMA: 1518 printf("wddump: DMA error"); 1519 err = EIO; 1520 break; 1521 case ERROR: 1522 printf("wddump: "); 1523 wdperror(wd); 1524 err = EIO; 1525 break; 1526 case NOERROR: 1527 err = 0; 1528 break; 1529 default: 1530 panic("wddump: unknown error type"); 1531 } 1532 if (err != 0) { 1533 printf("\n"); 1534 return err; 1535 } 1536 #else /* WD_DUMP_NOT_TRUSTED */ 1537 /* Let's just talk about this first... */ 1538 printf("wd%d: dump addr 0x%x, cylin %d, head %d, sector %d\n", 1539 unit, va, cylin, head, sector); 1540 delay(500 * 1000); /* half a second */ 1541 #endif 1542 1543 /* update block count */ 1544 nblks -= min(nblks, wddumpmulti); 1545 blkno += min(nblks, wddumpmulti); 1546 va += min(nblks, wddumpmulti) * lp->d_secsize; 1547 } 1548 1549 wddoingadump = 0; 1550 return 0; 1551 } 1552 1553 #ifdef HAS_BAD144_HANDLING 1554 /* 1555 * Internalize the bad sector table. 1556 */ 1557 void 1558 bad144intern(struct wd_softc *wd) 1559 { 1560 struct dkbad *bt = &wd->sc_dk.dk_cpulabel->bad; 1561 struct disklabel *lp = wd->sc_dk.dk_label; 1562 int i = 0; 1563 1564 WDCDEBUG_PRINT(("bad144intern\n"), DEBUG_XFERS); 1565 1566 for (; i < NBT_BAD; i++) { 1567 if (bt->bt_bad[i].bt_cyl == 0xffff) 1568 break; 1569 wd->sc_badsect[i] = 1570 bt->bt_bad[i].bt_cyl * lp->d_secpercyl + 1571 (bt->bt_bad[i].bt_trksec >> 8) * lp->d_nsectors + 1572 (bt->bt_bad[i].bt_trksec & 0xff); 1573 } 1574 for (; i < NBT_BAD+1; i++) 1575 wd->sc_badsect[i] = -1; 1576 } 1577 #endif 1578 1579 int 1580 wd_get_params(struct wd_softc *wd, u_int8_t flags, struct ataparams *params) 1581 { 1582 switch (wd->atabus->ata_get_params(wd->drvp, flags, params)) { 1583 case CMD_AGAIN: 1584 return 1; 1585 case CMD_ERR: 1586 /* 1587 * We `know' there's a drive here; just assume it's old. 1588 * This geometry is only used to read the MBR and print a 1589 * (false) attach message. 1590 */ 1591 strncpy(params->atap_model, "ST506", 1592 sizeof params->atap_model); 1593 params->atap_config = ATA_CFG_FIXED; 1594 params->atap_cylinders = 1024; 1595 params->atap_heads = 8; 1596 params->atap_sectors = 17; 1597 params->atap_multi = 1; 1598 params->atap_capabilities1 = params->atap_capabilities2 = 0; 1599 wd->drvp->ata_vers = -1; /* Mark it as pre-ATA */ 1600 return 0; 1601 case CMD_OK: 1602 return 0; 1603 default: 1604 panic("wd_get_params: bad return code from ata_get_params"); 1605 /* NOTREACHED */ 1606 } 1607 } 1608 1609 int 1610 wd_getcache(struct wd_softc *wd, int *bitsp) 1611 { 1612 struct ataparams params; 1613 1614 if (wd_get_params(wd, AT_WAIT, ¶ms) != 0) 1615 return EIO; 1616 if (params.atap_cmd_set1 == 0x0000 || 1617 params.atap_cmd_set1 == 0xffff || 1618 (params.atap_cmd_set1 & WDC_CMD1_CACHE) == 0) { 1619 *bitsp = 0; 1620 return 0; 1621 } 1622 *bitsp = DKCACHE_WCHANGE | DKCACHE_READ; 1623 if (params.atap_cmd1_en & WDC_CMD1_CACHE) 1624 *bitsp |= DKCACHE_WRITE; 1625 1626 return 0; 1627 } 1628 1629 int 1630 wd_setcache(struct wd_softc *wd, int bits) 1631 { 1632 struct ataparams params; 1633 struct wdc_command wdc_c; 1634 1635 if (wd_get_params(wd, AT_WAIT, ¶ms) != 0) 1636 return EIO; 1637 1638 if (params.atap_cmd_set1 == 0x0000 || 1639 params.atap_cmd_set1 == 0xffff || 1640 (params.atap_cmd_set1 & WDC_CMD1_CACHE) == 0) 1641 return EOPNOTSUPP; 1642 1643 if ((bits & DKCACHE_READ) == 0 || 1644 (bits & DKCACHE_SAVE) != 0) 1645 return EOPNOTSUPP; 1646 1647 memset(&wdc_c, 0, sizeof(struct wdc_command)); 1648 wdc_c.r_command = SET_FEATURES; 1649 wdc_c.r_st_bmask = 0; 1650 wdc_c.r_st_pmask = 0; 1651 wdc_c.timeout = 30000; /* 30s timeout */ 1652 wdc_c.flags = AT_WAIT; 1653 if (bits & DKCACHE_WRITE) 1654 wdc_c.r_precomp = WDSF_WRITE_CACHE_EN; 1655 else 1656 wdc_c.r_precomp = WDSF_WRITE_CACHE_DS; 1657 if (wd->atabus->ata_exec_command(wd->drvp, &wdc_c) != WDC_COMPLETE) { 1658 printf("%s: wd_setcache command not complete\n", 1659 wd->sc_dev.dv_xname); 1660 return EIO; 1661 } 1662 if (wdc_c.flags & (AT_ERROR | AT_TIMEOU | AT_DF)) { 1663 printf("%s: wd_setcache command error 0x%x\n", 1664 wd->sc_dev.dv_xname, wdc_c.flags); 1665 return EIO; 1666 } 1667 if (wdc_c.flags & ERR_NODEV) 1668 return ENODEV; 1669 return 0; 1670 } 1671 1672 int 1673 wd_flushcache(struct wd_softc *wd, int flags) 1674 { 1675 struct wdc_command wdc_c; 1676 1677 if (wd->drvp->ata_vers < 4) /* WDCC_FLUSHCACHE is here since ATA-4 */ 1678 return ENODEV; 1679 memset(&wdc_c, 0, sizeof(struct wdc_command)); 1680 if ((wd->sc_params.atap_cmd2_en & ATA_CMD2_LBA48) != 0 && 1681 (wd->sc_params.atap_cmd2_en & ATA_CMD2_FCE) != 0) 1682 wdc_c.r_command = WDCC_FLUSHCACHE_EXT; 1683 else 1684 wdc_c.r_command = WDCC_FLUSHCACHE; 1685 wdc_c.r_st_bmask = WDCS_DRDY; 1686 wdc_c.r_st_pmask = WDCS_DRDY; 1687 wdc_c.flags = flags; 1688 wdc_c.timeout = 30000; /* 30s timeout */ 1689 if (wd->atabus->ata_exec_command(wd->drvp, &wdc_c) != WDC_COMPLETE) { 1690 printf("%s: flush cache command didn't complete\n", 1691 wd->sc_dev.dv_xname); 1692 return EIO; 1693 } 1694 if (wdc_c.flags & ERR_NODEV) 1695 return ENODEV; 1696 if (wdc_c.flags & AT_TIMEOU) { 1697 printf("%s: flush cache command timeout\n", 1698 wd->sc_dev.dv_xname); 1699 return EIO; 1700 } 1701 if (wdc_c.flags & AT_ERROR) { 1702 if (wdc_c.r_error == WDCE_ABRT) /* command not supported */ 1703 return ENODEV; 1704 printf("%s: flush cache command: error 0x%x\n", 1705 wd->sc_dev.dv_xname, wdc_c.r_error); 1706 return EIO; 1707 } 1708 if (wdc_c.flags & AT_DF) { 1709 printf("%s: flush cache command: drive fault\n", 1710 wd->sc_dev.dv_xname); 1711 return EIO; 1712 } 1713 return 0; 1714 } 1715 1716 void 1717 wd_shutdown(void *arg) 1718 { 1719 struct wd_softc *wd = arg; 1720 wd_flushcache(wd, AT_POLL); 1721 } 1722 1723 /* 1724 * Allocate space for a ioctl queue structure. Mostly taken from 1725 * scsipi_ioctl.c 1726 */ 1727 struct wd_ioctl * 1728 wi_get(void) 1729 { 1730 struct wd_ioctl *wi; 1731 int s; 1732 1733 wi = malloc(sizeof(struct wd_ioctl), M_TEMP, M_WAITOK|M_ZERO); 1734 simple_lock_init(&wi->wi_bp.b_interlock); 1735 s = splbio(); 1736 LIST_INSERT_HEAD(&wi_head, wi, wi_list); 1737 splx(s); 1738 return (wi); 1739 } 1740 1741 /* 1742 * Free an ioctl structure and remove it from our list 1743 */ 1744 1745 void 1746 wi_free(struct wd_ioctl *wi) 1747 { 1748 int s; 1749 1750 s = splbio(); 1751 LIST_REMOVE(wi, wi_list); 1752 splx(s); 1753 free(wi, M_TEMP); 1754 } 1755 1756 /* 1757 * Find a wd_ioctl structure based on the struct buf. 1758 */ 1759 1760 struct wd_ioctl * 1761 wi_find(struct buf *bp) 1762 { 1763 struct wd_ioctl *wi; 1764 int s; 1765 1766 s = splbio(); 1767 for (wi = wi_head.lh_first; wi != 0; wi = wi->wi_list.le_next) 1768 if (bp == &wi->wi_bp) 1769 break; 1770 splx(s); 1771 return (wi); 1772 } 1773 1774 /* 1775 * Ioctl pseudo strategy routine 1776 * 1777 * This is mostly stolen from scsipi_ioctl.c:scsistrategy(). What 1778 * happens here is: 1779 * 1780 * - wdioctl() queues a wd_ioctl structure. 1781 * 1782 * - wdioctl() calls physio/wdioctlstrategy based on whether or not 1783 * user space I/O is required. If physio() is called, physio() eventually 1784 * calls wdioctlstrategy(). 1785 * 1786 * - In either case, wdioctlstrategy() calls wd->atabus->ata_exec_command() 1787 * to perform the actual command 1788 * 1789 * The reason for the use of the pseudo strategy routine is because 1790 * when doing I/O to/from user space, physio _really_ wants to be in 1791 * the loop. We could put the entire buffer into the ioctl request 1792 * structure, but that won't scale if we want to do things like download 1793 * microcode. 1794 */ 1795 1796 void 1797 wdioctlstrategy(struct buf *bp) 1798 { 1799 struct wd_ioctl *wi; 1800 struct wdc_command wdc_c; 1801 int error = 0; 1802 1803 wi = wi_find(bp); 1804 if (wi == NULL) { 1805 printf("user_strat: No ioctl\n"); 1806 error = EINVAL; 1807 goto bad; 1808 } 1809 1810 memset(&wdc_c, 0, sizeof(wdc_c)); 1811 1812 /* 1813 * Abort if physio broke up the transfer 1814 */ 1815 1816 if (bp->b_bcount != wi->wi_atareq.datalen) { 1817 printf("physio split wd ioctl request... cannot proceed\n"); 1818 error = EIO; 1819 goto bad; 1820 } 1821 1822 /* 1823 * Abort if we didn't get a buffer size that was a multiple of 1824 * our sector size (or was larger than NBBY) 1825 */ 1826 1827 if ((bp->b_bcount % wi->wi_softc->sc_dk.dk_label->d_secsize) != 0 || 1828 (bp->b_bcount / wi->wi_softc->sc_dk.dk_label->d_secsize) >= 1829 (1 << NBBY)) { 1830 error = EINVAL; 1831 goto bad; 1832 } 1833 1834 /* 1835 * Make sure a timeout was supplied in the ioctl request 1836 */ 1837 1838 if (wi->wi_atareq.timeout == 0) { 1839 error = EINVAL; 1840 goto bad; 1841 } 1842 1843 if (wi->wi_atareq.flags & ATACMD_READ) 1844 wdc_c.flags |= AT_READ; 1845 else if (wi->wi_atareq.flags & ATACMD_WRITE) 1846 wdc_c.flags |= AT_WRITE; 1847 1848 if (wi->wi_atareq.flags & ATACMD_READREG) 1849 wdc_c.flags |= AT_READREG; 1850 1851 wdc_c.flags |= AT_WAIT; 1852 1853 wdc_c.timeout = wi->wi_atareq.timeout; 1854 wdc_c.r_command = wi->wi_atareq.command; 1855 wdc_c.r_head = wi->wi_atareq.head & 0x0f; 1856 wdc_c.r_cyl = wi->wi_atareq.cylinder; 1857 wdc_c.r_sector = wi->wi_atareq.sec_num; 1858 wdc_c.r_count = wi->wi_atareq.sec_count; 1859 wdc_c.r_precomp = wi->wi_atareq.features; 1860 wdc_c.r_st_bmask = WDCS_DRDY; 1861 wdc_c.r_st_pmask = WDCS_DRDY; 1862 wdc_c.data = wi->wi_bp.b_data; 1863 wdc_c.bcount = wi->wi_bp.b_bcount; 1864 1865 if (wi->wi_softc->atabus->ata_exec_command(wi->wi_softc->drvp, &wdc_c) 1866 != WDC_COMPLETE) { 1867 wi->wi_atareq.retsts = ATACMD_ERROR; 1868 goto bad; 1869 } 1870 1871 if (wdc_c.flags & (AT_ERROR | AT_TIMEOU | AT_DF)) { 1872 if (wdc_c.flags & AT_ERROR) { 1873 wi->wi_atareq.retsts = ATACMD_ERROR; 1874 wi->wi_atareq.error = wdc_c.r_error; 1875 } else if (wdc_c.flags & AT_DF) 1876 wi->wi_atareq.retsts = ATACMD_DF; 1877 else 1878 wi->wi_atareq.retsts = ATACMD_TIMEOUT; 1879 } else { 1880 wi->wi_atareq.retsts = ATACMD_OK; 1881 if (wi->wi_atareq.flags & ATACMD_READREG) { 1882 wi->wi_atareq.head = wdc_c.r_head ; 1883 wi->wi_atareq.cylinder = wdc_c.r_cyl; 1884 wi->wi_atareq.sec_num = wdc_c.r_sector; 1885 wi->wi_atareq.sec_count = wdc_c.r_count; 1886 wi->wi_atareq.features = wdc_c.r_precomp; 1887 wi->wi_atareq.error = wdc_c.r_error; 1888 } 1889 } 1890 1891 bp->b_error = 0; 1892 biodone(bp); 1893 return; 1894 bad: 1895 bp->b_flags |= B_ERROR; 1896 bp->b_error = error; 1897 biodone(bp); 1898 } 1899
Indexes created Sun Oct 19 16:10:00 GMT 2025