wd.c revision 1.274.2.8.2.7
1 /* $NetBSD: wd.c,v 1.274.2.8.2.7 2006/03/28 23:11:26 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 1.274.2.8.2.7 2006/03/28 23:11:26 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 { "ST3160827A*", 239 WD_QUIRK_FORCE_LBA48 }, 240 /* Attemp to catch all seagate drives larger than 200GB */ 241 { "ST3[2-9][0-9][0-9][0-9][0-9][0-9]A*", 242 WD_QUIRK_FORCE_LBA48 }, 243 { NULL, 244 0 } 245 }; 246 247 static const struct wd_quirk * 248 wd_lookup_quirks(const char *name) 249 { 250 const struct wd_quirk *wdq; 251 const char *estr; 252 253 for (wdq = wd_quirk_table; wdq->wdq_match != NULL; wdq++) { 254 /* 255 * We only want exact matches (which include matches 256 * against globbing characters). 257 */ 258 if (pmatch(name, wdq->wdq_match, &estr) == 2) 259 return (wdq); 260 } 261 return (NULL); 262 } 263 264 int 265 wdprobe(struct device *parent, struct cfdata *match, void *aux) 266 { 267 struct ata_device *adev = aux; 268 269 if (adev == NULL) 270 return 0; 271 if (adev->adev_bustype->bustype_type != SCSIPI_BUSTYPE_ATA) 272 return 0; 273 274 if (match->cf_loc[ATA_HLCF_DRIVE] != ATA_HLCF_DRIVE_DEFAULT && 275 match->cf_loc[ATA_HLCF_DRIVE] != adev->adev_drv_data->drive) 276 return 0; 277 return 1; 278 } 279 280 void 281 wdattach(struct device *parent, struct device *self, void *aux) 282 { 283 struct wd_softc *wd = (void *)self; 284 struct ata_device *adev= aux; 285 int i, blank; 286 char buf[41], pbuf[9], c, *p, *q; 287 const struct wd_quirk *wdq; 288 WDCDEBUG_PRINT(("wdattach\n"), DEBUG_FUNCS | DEBUG_PROBE); 289 290 lockinit(&wd->sc_lock, PRIBIO | PCATCH, "wdlock", 0, 0); 291 292 callout_init(&wd->sc_restart_ch); 293 bufq_alloc(&wd->sc_q, BUFQ_DISK_DEFAULT_STRAT()|BUFQ_SORT_RAWBLOCK); 294 SLIST_INIT(&wd->sc_bslist); 295 296 wd->atabus = adev->adev_bustype; 297 wd->openings = adev->adev_openings; 298 wd->drvp = adev->adev_drv_data; 299 300 wd->drvp->drv_done = wddone; 301 wd->drvp->drv_softc = &wd->sc_dev; 302 303 aprint_naive("\n"); 304 305 /* read our drive info */ 306 if (wd_get_params(wd, AT_WAIT, &wd->sc_params) != 0) { 307 aprint_error("\n%s: IDENTIFY failed\n", wd->sc_dev.dv_xname); 308 return; 309 } 310 311 for (blank = 0, p = wd->sc_params.atap_model, q = buf, i = 0; 312 i < sizeof(wd->sc_params.atap_model); i++) { 313 c = *p++; 314 if (c == '\0') 315 break; 316 if (c != ' ') { 317 if (blank) { 318 *q++ = ' '; 319 blank = 0; 320 } 321 *q++ = c; 322 } else 323 blank = 1; 324 } 325 *q++ = '\0'; 326 327 aprint_normal(": <%s>\n", buf); 328 329 wdq = wd_lookup_quirks(buf); 330 if (wdq != NULL) 331 wd->sc_quirks = wdq->wdq_quirks; 332 333 if ((wd->sc_params.atap_multi & 0xff) > 1) { 334 wd->sc_multi = wd->sc_params.atap_multi & 0xff; 335 } else { 336 wd->sc_multi = 1; 337 } 338 339 aprint_normal("%s: drive supports %d-sector PIO transfers,", 340 wd->sc_dev.dv_xname, wd->sc_multi); 341 342 /* 48-bit LBA addressing */ 343 if ((wd->sc_params.atap_cmd2_en & ATA_CMD2_LBA48) != 0) 344 wd->sc_flags |= WDF_LBA48; 345 346 /* Prior to ATA-4, LBA was optional. */ 347 if ((wd->sc_params.atap_capabilities1 & WDC_CAP_LBA) != 0) 348 wd->sc_flags |= WDF_LBA; 349 #if 0 350 /* ATA-4 requires LBA. */ 351 if (wd->sc_params.atap_ataversion != 0xffff && 352 wd->sc_params.atap_ataversion >= WDC_VER_ATA4) 353 wd->sc_flags |= WDF_LBA; 354 #endif 355 356 if ((wd->sc_flags & WDF_LBA48) != 0) { 357 aprint_normal(" LBA48 addressing\n"); 358 wd->sc_capacity = 359 ((u_int64_t) wd->sc_params.__reserved6[11] << 48) | 360 ((u_int64_t) wd->sc_params.__reserved6[10] << 32) | 361 ((u_int64_t) wd->sc_params.__reserved6[9] << 16) | 362 ((u_int64_t) wd->sc_params.__reserved6[8] << 0); 363 } else if ((wd->sc_flags & WDF_LBA) != 0) { 364 aprint_normal(" LBA addressing\n"); 365 wd->sc_capacity = 366 (wd->sc_params.atap_capacity[1] << 16) | 367 wd->sc_params.atap_capacity[0]; 368 } else { 369 aprint_normal(" chs addressing\n"); 370 wd->sc_capacity = 371 wd->sc_params.atap_cylinders * 372 wd->sc_params.atap_heads * 373 wd->sc_params.atap_sectors; 374 } 375 format_bytes(pbuf, sizeof(pbuf), wd->sc_capacity * DEV_BSIZE); 376 aprint_normal("%s: %s, %d cyl, %d head, %d sec, " 377 "%d bytes/sect x %llu sectors\n", 378 self->dv_xname, pbuf, 379 (wd->sc_flags & WDF_LBA) ? (int)(wd->sc_capacity / 380 (wd->sc_params.atap_heads * wd->sc_params.atap_sectors)) : 381 wd->sc_params.atap_cylinders, 382 wd->sc_params.atap_heads, wd->sc_params.atap_sectors, 383 DEV_BSIZE, (unsigned long long)wd->sc_capacity); 384 385 WDCDEBUG_PRINT(("%s: atap_dmatiming_mimi=%d, atap_dmatiming_recom=%d\n", 386 self->dv_xname, wd->sc_params.atap_dmatiming_mimi, 387 wd->sc_params.atap_dmatiming_recom), DEBUG_PROBE); 388 /* 389 * Initialize and attach the disk structure. 390 */ 391 wd->sc_dk.dk_driver = &wddkdriver; 392 wd->sc_dk.dk_name = wd->sc_dev.dv_xname; 393 disk_attach(&wd->sc_dk); 394 wd->sc_wdc_bio.lp = wd->sc_dk.dk_label; 395 wd->sc_sdhook = shutdownhook_establish(wd_shutdown, wd); 396 if (wd->sc_sdhook == NULL) 397 aprint_error("%s: WARNING: unable to establish shutdown hook\n", 398 wd->sc_dev.dv_xname); 399 #if NRND > 0 400 rnd_attach_source(&wd->rnd_source, wd->sc_dev.dv_xname, 401 RND_TYPE_DISK, 0); 402 #endif 403 } 404 405 int 406 wdactivate(struct device *self, enum devact act) 407 { 408 int rv = 0; 409 410 switch (act) { 411 case DVACT_ACTIVATE: 412 rv = EOPNOTSUPP; 413 break; 414 415 case DVACT_DEACTIVATE: 416 /* 417 * Nothing to do; we key off the device's DVF_ACTIVATE. 418 */ 419 break; 420 } 421 return (rv); 422 } 423 424 int 425 wddetach(struct device *self, int flags) 426 { 427 struct wd_softc *sc = (struct wd_softc *)self; 428 struct buf *bp; 429 int s, bmaj, cmaj, i, mn; 430 431 /* locate the major number */ 432 bmaj = bdevsw_lookup_major(&wd_bdevsw); 433 cmaj = cdevsw_lookup_major(&wd_cdevsw); 434 435 s = splbio(); 436 437 /* Kill off any queued buffers. */ 438 while ((bp = BUFQ_GET(&sc->sc_q)) != NULL) { 439 bp->b_error = EIO; 440 bp->b_flags |= B_ERROR; 441 bp->b_resid = bp->b_bcount; 442 biodone(bp); 443 } 444 445 bufq_free(&sc->sc_q); 446 447 splx(s); 448 449 /* Nuke the vnodes for any open instances. */ 450 for (i = 0; i < MAXPARTITIONS; i++) { 451 mn = WDMINOR(self->dv_unit, i); 452 vdevgone(bmaj, mn, mn, VBLK); 453 vdevgone(cmaj, mn, mn, VCHR); 454 } 455 456 /* Detach disk. */ 457 disk_detach(&sc->sc_dk); 458 459 /* Clean out the bad sector list */ 460 while (!SLIST_EMPTY(&sc->sc_bslist)) { 461 void *head = SLIST_FIRST(&sc->sc_bslist); 462 SLIST_REMOVE_HEAD(&sc->sc_bslist, dbs_next); 463 free(head, M_TEMP); 464 } 465 sc->sc_bscount = 0; 466 467 /* Get rid of the shutdown hook. */ 468 if (sc->sc_sdhook != NULL) 469 shutdownhook_disestablish(sc->sc_sdhook); 470 471 #if NRND > 0 472 /* Unhook the entropy source. */ 473 rnd_detach_source(&sc->rnd_source); 474 #endif 475 476 lockmgr(&sc->sc_lock, LK_DRAIN, NULL); 477 478 return (0); 479 } 480 481 /* 482 * Read/write routine for a buffer. Validates the arguments and schedules the 483 * transfer. Does not wait for the transfer to complete. 484 */ 485 void 486 wdstrategy(struct buf *bp) 487 { 488 struct wd_softc *wd = device_lookup(&wd_cd, WDUNIT(bp->b_dev)); 489 struct disklabel *lp = wd->sc_dk.dk_label; 490 daddr_t blkno; 491 int s; 492 493 WDCDEBUG_PRINT(("wdstrategy (%s)\n", wd->sc_dev.dv_xname), 494 DEBUG_XFERS); 495 496 /* Valid request? */ 497 if (bp->b_blkno < 0 || 498 (bp->b_bcount % lp->d_secsize) != 0 || 499 (bp->b_bcount / lp->d_secsize) >= (1 << NBBY)) { 500 bp->b_error = EINVAL; 501 goto bad; 502 } 503 504 /* If device invalidated (e.g. media change, door open), error. */ 505 if ((wd->sc_flags & WDF_LOADED) == 0) { 506 bp->b_error = EIO; 507 goto bad; 508 } 509 510 /* If it's a null transfer, return immediately. */ 511 if (bp->b_bcount == 0) 512 goto done; 513 514 /* 515 * Do bounds checking, adjust transfer. if error, process. 516 * If end of partition, just return. 517 */ 518 if (WDPART(bp->b_dev) == RAW_PART) { 519 if (bounds_check_with_mediasize(bp, DEV_BSIZE, 520 wd->sc_capacity) <= 0) 521 goto done; 522 } else { 523 if (bounds_check_with_label(&wd->sc_dk, bp, 524 (wd->sc_flags & (WDF_WLABEL|WDF_LABELLING)) != 0) <= 0) 525 goto done; 526 } 527 528 /* 529 * Now convert the block number to absolute and put it in 530 * terms of the device's logical block size. 531 */ 532 if (lp->d_secsize >= DEV_BSIZE) 533 blkno = bp->b_blkno / (lp->d_secsize / DEV_BSIZE); 534 else 535 blkno = bp->b_blkno * (DEV_BSIZE / lp->d_secsize); 536 537 if (WDPART(bp->b_dev) != RAW_PART) 538 blkno += lp->d_partitions[WDPART(bp->b_dev)].p_offset; 539 540 bp->b_rawblkno = blkno; 541 542 /* 543 * If the transfer about to be attempted contains only a block that 544 * is known to be bad then return an error for the transfer without 545 * even attempting to start a transfer up under the premis that we 546 * will just end up doing more retries for a transfer that will end 547 * up failing again. 548 * XXX:SMP - mutex required to protect with DIOCBSFLUSH 549 */ 550 if (__predict_false(!SLIST_EMPTY(&wd->sc_bslist))) { 551 struct disk_badsectors *dbs; 552 daddr_t maxblk = blkno + (bp->b_bcount >> DEV_BSHIFT) - 1; 553 554 SLIST_FOREACH(dbs, &wd->sc_bslist, dbs_next) 555 if ((dbs->dbs_min <= blkno && blkno <= dbs->dbs_max) || 556 (dbs->dbs_min <= maxblk && maxblk <= dbs->dbs_max)){ 557 bp->b_error = EIO; 558 goto bad; 559 } 560 } 561 562 /* Queue transfer on drive, activate drive and controller if idle. */ 563 s = splbio(); 564 BUFQ_PUT(&wd->sc_q, bp); 565 wdstart(wd); 566 splx(s); 567 return; 568 bad: 569 bp->b_flags |= B_ERROR; 570 done: 571 /* Toss transfer; we're done early. */ 572 bp->b_resid = bp->b_bcount; 573 biodone(bp); 574 } 575 576 /* 577 * Queue a drive for I/O. 578 */ 579 void 580 wdstart(void *arg) 581 { 582 struct wd_softc *wd = arg; 583 struct buf *bp = NULL; 584 585 WDCDEBUG_PRINT(("wdstart %s\n", wd->sc_dev.dv_xname), 586 DEBUG_XFERS); 587 while (wd->openings > 0) { 588 589 /* Is there a buf for us ? */ 590 if ((bp = BUFQ_GET(&wd->sc_q)) == NULL) 591 return; 592 593 /* 594 * Make the command. First lock the device 595 */ 596 wd->openings--; 597 598 wd->retries = 0; 599 __wdstart(wd, bp); 600 } 601 } 602 603 static void 604 wd_split_mod15_write(struct buf *bp) 605 { 606 struct buf *obp = bp->b_private; 607 struct wd_softc *sc = wd_cd.cd_devs[DISKUNIT(obp->b_dev)]; 608 609 if (__predict_false(bp->b_flags & B_ERROR) != 0) { 610 /* 611 * Propagate the error. If this was the first half of 612 * the original transfer, make sure to account for that 613 * in the residual. 614 */ 615 if (bp->b_data == obp->b_data) 616 bp->b_resid += bp->b_bcount; 617 goto done; 618 } 619 620 /* 621 * If this was the second half of the transfer, we're all done! 622 */ 623 if (bp->b_data != obp->b_data) 624 goto done; 625 626 /* 627 * Advance the pointer to the second half and issue that command 628 * using the same opening. 629 */ 630 bp->b_flags = obp->b_flags | B_CALL; 631 bp->b_data += bp->b_bcount; 632 bp->b_blkno += (bp->b_bcount / 512); 633 bp->b_rawblkno += (bp->b_bcount / 512); 634 __wdstart(sc, bp); 635 return; 636 637 done: 638 obp->b_flags |= (bp->b_flags & (B_EINTR|B_ERROR)); 639 obp->b_error = bp->b_error; 640 obp->b_resid = bp->b_resid; 641 pool_put(&bufpool, bp); 642 biodone(obp); 643 sc->openings++; 644 /* wddone() will call wdstart() */ 645 } 646 647 void 648 __wdstart(struct wd_softc *wd, struct buf *bp) 649 { 650 651 /* 652 * Deal with the "split mod15 write" quirk. We just divide the 653 * transfer in two, doing the first half and then then second half 654 * with the same command opening. 655 * 656 * Note we MUST do this here, because we can't let insertion 657 * into the bufq cause the transfers to be re-merged. 658 */ 659 if (__predict_false((wd->sc_quirks & WD_QUIRK_SPLIT_MOD15_WRITE) != 0 && 660 (bp->b_flags & B_READ) == 0 && 661 bp->b_bcount > 512 && 662 ((bp->b_bcount / 512) % 15) == 1)) { 663 struct buf *nbp; 664 665 /* already at splbio */ 666 nbp = pool_get(&bufpool, PR_NOWAIT); 667 if (__predict_false(nbp == NULL)) { 668 /* No memory -- fail the iop. */ 669 bp->b_error = ENOMEM; 670 bp->b_flags |= B_ERROR; 671 bp->b_resid = bp->b_bcount; 672 biodone(bp); 673 wd->openings++; 674 return; 675 } 676 677 BUF_INIT(nbp); 678 nbp->b_error = 0; 679 nbp->b_proc = bp->b_proc; 680 nbp->b_vp = NULLVP; 681 nbp->b_dev = bp->b_dev; 682 683 nbp->b_bcount = bp->b_bcount / 2; 684 nbp->b_bufsize = bp->b_bcount / 2; 685 nbp->b_data = bp->b_data; 686 687 nbp->b_blkno = bp->b_blkno; 688 nbp->b_rawblkno = bp->b_rawblkno; 689 690 nbp->b_flags = bp->b_flags | B_CALL; 691 nbp->b_iodone = wd_split_mod15_write; 692 693 /* Put ptr to orig buf in b_private and use new buf */ 694 nbp->b_private = bp; 695 696 BIO_COPYPRIO(nbp, bp); 697 698 bp = nbp; 699 } 700 701 wd->sc_wdc_bio.blkno = bp->b_rawblkno; 702 wd->sc_wdc_bio.blkdone =0; 703 wd->sc_bp = bp; 704 /* 705 * If we're retrying, retry in single-sector mode. This will give us 706 * the sector number of the problem, and will eventually allow the 707 * transfer to succeed. 708 */ 709 if (wd->retries >= WDIORETRIES_SINGLE) 710 wd->sc_wdc_bio.flags = ATA_SINGLE; 711 else 712 wd->sc_wdc_bio.flags = 0; 713 if (wd->sc_flags & WDF_LBA48 && 714 (wd->sc_wdc_bio.blkno > LBA48_THRESHOLD || 715 (wd->sc_quirks & WD_QUIRK_FORCE_LBA48) != 0)) 716 wd->sc_wdc_bio.flags |= ATA_LBA48; 717 if (wd->sc_flags & WDF_LBA) 718 wd->sc_wdc_bio.flags |= ATA_LBA; 719 if (bp->b_flags & B_READ) 720 wd->sc_wdc_bio.flags |= ATA_READ; 721 wd->sc_wdc_bio.bcount = bp->b_bcount; 722 wd->sc_wdc_bio.databuf = bp->b_data; 723 /* Instrumentation. */ 724 disk_busy(&wd->sc_dk); 725 switch (wd->atabus->ata_bio(wd->drvp, &wd->sc_wdc_bio)) { 726 case WDC_TRY_AGAIN: 727 callout_reset(&wd->sc_restart_ch, hz, wdrestart, wd); 728 break; 729 case WDC_QUEUED: 730 case WDC_COMPLETE: 731 break; 732 default: 733 panic("__wdstart: bad return code from ata_bio()"); 734 } 735 } 736 737 void 738 wddone(void *v) 739 { 740 struct wd_softc *wd = v; 741 struct buf *bp = wd->sc_bp; 742 const char *errmsg; 743 int do_perror = 0; 744 WDCDEBUG_PRINT(("wddone %s\n", wd->sc_dev.dv_xname), 745 DEBUG_XFERS); 746 747 if (bp == NULL) 748 return; 749 bp->b_resid = wd->sc_wdc_bio.bcount; 750 switch (wd->sc_wdc_bio.error) { 751 case ERR_DMA: 752 errmsg = "DMA error"; 753 goto retry; 754 case ERR_DF: 755 errmsg = "device fault"; 756 goto retry; 757 case TIMEOUT: 758 errmsg = "device timeout"; 759 goto retry; 760 case ERR_RESET: 761 errmsg = "channel reset"; 762 goto retry2; 763 case ERROR: 764 /* Don't care about media change bits */ 765 if (wd->sc_wdc_bio.r_error != 0 && 766 (wd->sc_wdc_bio.r_error & ~(WDCE_MC | WDCE_MCR)) == 0) 767 goto noerror; 768 errmsg = "error"; 769 do_perror = 1; 770 retry: /* Just reset and retry. Can we do more ? */ 771 wd->atabus->ata_reset_channel(wd->drvp, AT_RST_NOCMD); 772 retry2: 773 diskerr(bp, "wd", errmsg, LOG_PRINTF, 774 wd->sc_wdc_bio.blkdone, wd->sc_dk.dk_label); 775 if (wd->retries < WDIORETRIES) 776 printf(", retrying\n"); 777 if (do_perror) 778 wdperror(wd); 779 if (wd->retries < WDIORETRIES) { 780 wd->retries++; 781 callout_reset(&wd->sc_restart_ch, RECOVERYTIME, 782 wdrestart, wd); 783 return; 784 } 785 printf("\n"); 786 787 /* 788 * Not all errors indicate a failed block but those that do, 789 * put the block on the bad-block list for the device. Only 790 * do this for reads because the drive should do it for writes, 791 * itself, according to Manuel. 792 */ 793 if ((bp->b_flags & B_READ) && 794 ((wd->drvp->ata_vers >= 4 && wd->sc_wdc_bio.r_error & 64) || 795 (wd->drvp->ata_vers < 4 && wd->sc_wdc_bio.r_error & 192))) { 796 struct disk_badsectors *dbs; 797 798 dbs = malloc(sizeof *dbs, M_TEMP, M_WAITOK); 799 dbs->dbs_min = bp->b_rawblkno; 800 dbs->dbs_max = dbs->dbs_min + (bp->b_bcount >> DEV_BSHIFT) - 1; 801 microtime(&dbs->dbs_failedat); 802 SLIST_INSERT_HEAD(&wd->sc_bslist, dbs, dbs_next); 803 wd->sc_bscount++; 804 } 805 806 bp->b_flags |= B_ERROR; 807 bp->b_error = EIO; 808 break; 809 case NOERROR: 810 noerror: if ((wd->sc_wdc_bio.flags & ATA_CORR) || wd->retries > 0) 811 printf("%s: soft error (corrected)\n", 812 wd->sc_dev.dv_xname); 813 break; 814 case ERR_NODEV: 815 bp->b_flags |= B_ERROR; 816 bp->b_error = EIO; 817 break; 818 } 819 disk_unbusy(&wd->sc_dk, (bp->b_bcount - bp->b_resid), 820 (bp->b_flags & B_READ)); 821 #if NRND > 0 822 rnd_add_uint32(&wd->rnd_source, bp->b_blkno); 823 #endif 824 /* XXX Yuck, but we don't want to increment openings in this case */ 825 if (__predict_false((bp->b_flags & B_CALL) != 0 && 826 bp->b_iodone == wd_split_mod15_write)) 827 biodone(bp); 828 else { 829 biodone(bp); 830 wd->openings++; 831 } 832 wdstart(wd); 833 } 834 835 void 836 wdrestart(void *v) 837 { 838 struct wd_softc *wd = v; 839 struct buf *bp = wd->sc_bp; 840 int s; 841 WDCDEBUG_PRINT(("wdrestart %s\n", wd->sc_dev.dv_xname), 842 DEBUG_XFERS); 843 844 s = splbio(); 845 __wdstart(v, bp); 846 splx(s); 847 } 848 849 int 850 wdread(dev_t dev, struct uio *uio, int flags) 851 { 852 853 WDCDEBUG_PRINT(("wdread\n"), DEBUG_XFERS); 854 return (physio(wdstrategy, NULL, dev, B_READ, minphys, uio)); 855 } 856 857 int 858 wdwrite(dev_t dev, struct uio *uio, int flags) 859 { 860 861 WDCDEBUG_PRINT(("wdwrite\n"), DEBUG_XFERS); 862 return (physio(wdstrategy, NULL, dev, B_WRITE, minphys, uio)); 863 } 864 865 int 866 wdopen(dev_t dev, int flag, int fmt, struct proc *p) 867 { 868 struct wd_softc *wd; 869 int part, error; 870 871 WDCDEBUG_PRINT(("wdopen\n"), DEBUG_FUNCS); 872 wd = device_lookup(&wd_cd, WDUNIT(dev)); 873 if (wd == NULL) 874 return (ENXIO); 875 876 if ((wd->sc_dev.dv_flags & DVF_ACTIVE) == 0) 877 return (ENODEV); 878 879 /* 880 * If this is the first open of this device, add a reference 881 * to the adapter. 882 */ 883 if (wd->sc_dk.dk_openmask == 0 && 884 (error = wd->atabus->ata_addref(wd->drvp)) != 0) 885 return (error); 886 887 if ((error = lockmgr(&wd->sc_lock, LK_EXCLUSIVE, NULL)) != 0) 888 goto bad4; 889 890 if (wd->sc_dk.dk_openmask != 0) { 891 /* 892 * If any partition is open, but the disk has been invalidated, 893 * disallow further opens. 894 */ 895 if ((wd->sc_flags & WDF_LOADED) == 0) { 896 error = EIO; 897 goto bad3; 898 } 899 } else { 900 if ((wd->sc_flags & WDF_LOADED) == 0) { 901 wd->sc_flags |= WDF_LOADED; 902 903 /* Load the physical device parameters. */ 904 wd_get_params(wd, AT_WAIT, &wd->sc_params); 905 906 /* Load the partition info if not already loaded. */ 907 wdgetdisklabel(wd); 908 } 909 } 910 911 part = WDPART(dev); 912 913 /* Check that the partition exists. */ 914 if (part != RAW_PART && 915 (part >= wd->sc_dk.dk_label->d_npartitions || 916 wd->sc_dk.dk_label->d_partitions[part].p_fstype == FS_UNUSED)) { 917 error = ENXIO; 918 goto bad; 919 } 920 921 /* Insure only one open at a time. */ 922 switch (fmt) { 923 case S_IFCHR: 924 wd->sc_dk.dk_copenmask |= (1 << part); 925 break; 926 case S_IFBLK: 927 wd->sc_dk.dk_bopenmask |= (1 << part); 928 break; 929 } 930 wd->sc_dk.dk_openmask = 931 wd->sc_dk.dk_copenmask | wd->sc_dk.dk_bopenmask; 932 933 lockmgr(&wd->sc_lock, LK_RELEASE, NULL); 934 return 0; 935 936 bad: 937 if (wd->sc_dk.dk_openmask == 0) { 938 } 939 940 bad3: 941 lockmgr(&wd->sc_lock, LK_RELEASE, NULL); 942 bad4: 943 if (wd->sc_dk.dk_openmask == 0) 944 wd->atabus->ata_delref(wd->drvp); 945 return error; 946 } 947 948 int 949 wdclose(dev_t dev, int flag, int fmt, struct proc *p) 950 { 951 struct wd_softc *wd = device_lookup(&wd_cd, WDUNIT(dev)); 952 int part = WDPART(dev); 953 int error; 954 955 WDCDEBUG_PRINT(("wdclose\n"), DEBUG_FUNCS); 956 if ((error = lockmgr(&wd->sc_lock, LK_EXCLUSIVE, NULL)) != 0) 957 return error; 958 959 switch (fmt) { 960 case S_IFCHR: 961 wd->sc_dk.dk_copenmask &= ~(1 << part); 962 break; 963 case S_IFBLK: 964 wd->sc_dk.dk_bopenmask &= ~(1 << part); 965 break; 966 } 967 wd->sc_dk.dk_openmask = 968 wd->sc_dk.dk_copenmask | wd->sc_dk.dk_bopenmask; 969 970 if (wd->sc_dk.dk_openmask == 0) { 971 wd_flushcache(wd, AT_WAIT); 972 /* XXXX Must wait for I/O to complete! */ 973 974 if (! (wd->sc_flags & WDF_KLABEL)) 975 wd->sc_flags &= ~WDF_LOADED; 976 977 wd->atabus->ata_delref(wd->drvp); 978 } 979 980 lockmgr(&wd->sc_lock, LK_RELEASE, NULL); 981 return 0; 982 } 983 984 void 985 wdgetdefaultlabel(struct wd_softc *wd, struct disklabel *lp) 986 { 987 988 WDCDEBUG_PRINT(("wdgetdefaultlabel\n"), DEBUG_FUNCS); 989 memset(lp, 0, sizeof(struct disklabel)); 990 991 lp->d_secsize = DEV_BSIZE; 992 lp->d_ntracks = wd->sc_params.atap_heads; 993 lp->d_nsectors = wd->sc_params.atap_sectors; 994 lp->d_ncylinders = (wd->sc_flags & WDF_LBA) ? wd->sc_capacity / 995 (wd->sc_params.atap_heads * wd->sc_params.atap_sectors) : 996 wd->sc_params.atap_cylinders; 997 lp->d_secpercyl = lp->d_ntracks * lp->d_nsectors; 998 999 if (strcmp(wd->sc_params.atap_model, "ST506") == 0) 1000 lp->d_type = DTYPE_ST506; 1001 else 1002 lp->d_type = DTYPE_ESDI; 1003 1004 strncpy(lp->d_typename, wd->sc_params.atap_model, 16); 1005 strncpy(lp->d_packname, "fictitious", 16); 1006 if (wd->sc_capacity > UINT32_MAX) 1007 lp->d_secperunit = UINT32_MAX; 1008 else 1009 lp->d_secperunit = wd->sc_capacity; 1010 lp->d_rpm = 3600; 1011 lp->d_interleave = 1; 1012 lp->d_flags = 0; 1013 1014 lp->d_partitions[RAW_PART].p_offset = 0; 1015 lp->d_partitions[RAW_PART].p_size = 1016 lp->d_secperunit * (lp->d_secsize / DEV_BSIZE); 1017 lp->d_partitions[RAW_PART].p_fstype = FS_UNUSED; 1018 lp->d_npartitions = RAW_PART + 1; 1019 1020 lp->d_magic = DISKMAGIC; 1021 lp->d_magic2 = DISKMAGIC; 1022 lp->d_checksum = dkcksum(lp); 1023 } 1024 1025 /* 1026 * Fabricate a default disk label, and try to read the correct one. 1027 */ 1028 void 1029 wdgetdisklabel(struct wd_softc *wd) 1030 { 1031 struct disklabel *lp = wd->sc_dk.dk_label; 1032 const char *errstring; 1033 1034 WDCDEBUG_PRINT(("wdgetdisklabel\n"), DEBUG_FUNCS); 1035 1036 memset(wd->sc_dk.dk_cpulabel, 0, sizeof(struct cpu_disklabel)); 1037 1038 wdgetdefaultlabel(wd, lp); 1039 1040 wd->sc_badsect[0] = -1; 1041 1042 if (wd->drvp->state > RESET) 1043 wd->drvp->drive_flags |= DRIVE_RESET; 1044 errstring = readdisklabel(MAKEWDDEV(0, wd->sc_dev.dv_unit, RAW_PART), 1045 wdstrategy, lp, wd->sc_dk.dk_cpulabel); 1046 if (errstring) { 1047 /* 1048 * This probably happened because the drive's default 1049 * geometry doesn't match the DOS geometry. We 1050 * assume the DOS geometry is now in the label and try 1051 * again. XXX This is a kluge. 1052 */ 1053 if (wd->drvp->state > RESET) 1054 wd->drvp->drive_flags |= DRIVE_RESET; 1055 errstring = readdisklabel(MAKEWDDEV(0, wd->sc_dev.dv_unit, 1056 RAW_PART), wdstrategy, lp, wd->sc_dk.dk_cpulabel); 1057 } 1058 if (errstring) { 1059 printf("%s: %s\n", wd->sc_dev.dv_xname, errstring); 1060 return; 1061 } 1062 1063 if (wd->drvp->state > RESET) 1064 wd->drvp->drive_flags |= DRIVE_RESET; 1065 #ifdef HAS_BAD144_HANDLING 1066 if ((lp->d_flags & D_BADSECT) != 0) 1067 bad144intern(wd); 1068 #endif 1069 } 1070 1071 void 1072 wdperror(const struct wd_softc *wd) 1073 { 1074 static const char *const errstr0_3[] = {"address mark not found", 1075 "track 0 not found", "aborted command", "media change requested", 1076 "id not found", "media changed", "uncorrectable data error", 1077 "bad block detected"}; 1078 static const char *const errstr4_5[] = { 1079 "obsolete (address mark not found)", 1080 "no media/write protected", "aborted command", 1081 "media change requested", "id not found", "media changed", 1082 "uncorrectable data error", "interface CRC error"}; 1083 const char *const *errstr; 1084 int i; 1085 char *sep = ""; 1086 1087 const char *devname = wd->sc_dev.dv_xname; 1088 struct ata_drive_datas *drvp = wd->drvp; 1089 int errno = wd->sc_wdc_bio.r_error; 1090 1091 if (drvp->ata_vers >= 4) 1092 errstr = errstr4_5; 1093 else 1094 errstr = errstr0_3; 1095 1096 printf("%s: (", devname); 1097 1098 if (errno == 0) 1099 printf("error not notified"); 1100 1101 for (i = 0; i < 8; i++) { 1102 if (errno & (1 << i)) { 1103 printf("%s%s", sep, errstr[i]); 1104 sep = ", "; 1105 } 1106 } 1107 printf(")\n"); 1108 } 1109 1110 int 1111 wdioctl(dev_t dev, u_long xfer, caddr_t addr, int flag, struct proc *p) 1112 { 1113 struct wd_softc *wd = device_lookup(&wd_cd, WDUNIT(dev)); 1114 int error = 0; 1115 #ifdef __HAVE_OLD_DISKLABEL 1116 struct disklabel *newlabel = NULL; 1117 #endif 1118 1119 WDCDEBUG_PRINT(("wdioctl\n"), DEBUG_FUNCS); 1120 1121 if ((wd->sc_flags & WDF_LOADED) == 0) 1122 return EIO; 1123 1124 switch (xfer) { 1125 #ifdef HAS_BAD144_HANDLING 1126 case DIOCSBAD: 1127 if ((flag & FWRITE) == 0) 1128 return EBADF; 1129 wd->sc_dk.dk_cpulabel->bad = *(struct dkbad *)addr; 1130 wd->sc_dk.dk_label->d_flags |= D_BADSECT; 1131 bad144intern(wd); 1132 return 0; 1133 #endif 1134 1135 case DIOCBSLIST : 1136 { 1137 u_int32_t count, missing, skip; 1138 struct disk_badsecinfo dbsi; 1139 struct disk_badsectors *dbs; 1140 size_t available; 1141 caddr_t laddr; 1142 1143 dbsi = *(struct disk_badsecinfo *)addr; 1144 missing = wd->sc_bscount; 1145 count = 0; 1146 available = dbsi.dbsi_bufsize; 1147 skip = dbsi.dbsi_skip; 1148 laddr = dbsi.dbsi_buffer; 1149 1150 /* 1151 * We start this loop with the expectation that all of the 1152 * entries will be missed and decrement this counter each 1153 * time we either skip over one (already copied out) or 1154 * we actually copy it back to user space. The structs 1155 * holding the bad sector information are copied directly 1156 * back to user space whilst the summary is returned via 1157 * the struct passed in via the ioctl. 1158 */ 1159 SLIST_FOREACH(dbs, &wd->sc_bslist, dbs_next) { 1160 if (skip > 0) { 1161 missing--; 1162 skip--; 1163 continue; 1164 } 1165 if (available < sizeof(*dbs)) 1166 break; 1167 available -= sizeof(*dbs); 1168 copyout(dbs, laddr, sizeof(*dbs)); 1169 laddr += sizeof(*dbs); 1170 missing--; 1171 count++; 1172 } 1173 dbsi.dbsi_left = missing; 1174 dbsi.dbsi_copied = count; 1175 *(struct disk_badsecinfo *)addr = dbsi; 1176 return 0; 1177 } 1178 1179 case DIOCBSFLUSH : 1180 /* Clean out the bad sector list */ 1181 while (!SLIST_EMPTY(&wd->sc_bslist)) { 1182 void *head = SLIST_FIRST(&wd->sc_bslist); 1183 SLIST_REMOVE_HEAD(&wd->sc_bslist, dbs_next); 1184 free(head, M_TEMP); 1185 } 1186 wd->sc_bscount = 0; 1187 return 0; 1188 1189 case DIOCGDINFO: 1190 *(struct disklabel *)addr = *(wd->sc_dk.dk_label); 1191 return 0; 1192 #ifdef __HAVE_OLD_DISKLABEL 1193 case ODIOCGDINFO: 1194 newlabel = malloc(sizeof *newlabel, M_TEMP, M_WAITOK); 1195 if (newlabel == NULL) 1196 return EIO; 1197 *newlabel = *(wd->sc_dk.dk_label); 1198 if (newlabel->d_npartitions <= OLDMAXPARTITIONS) 1199 memcpy(addr, newlabel, sizeof (struct olddisklabel)); 1200 else 1201 error = ENOTTY; 1202 free(newlabel, M_TEMP); 1203 return error; 1204 #endif 1205 1206 case DIOCGPART: 1207 ((struct partinfo *)addr)->disklab = wd->sc_dk.dk_label; 1208 ((struct partinfo *)addr)->part = 1209 &wd->sc_dk.dk_label->d_partitions[WDPART(dev)]; 1210 return 0; 1211 1212 case DIOCWDINFO: 1213 case DIOCSDINFO: 1214 #ifdef __HAVE_OLD_DISKLABEL 1215 case ODIOCWDINFO: 1216 case ODIOCSDINFO: 1217 #endif 1218 { 1219 struct disklabel *lp; 1220 1221 if ((flag & FWRITE) == 0) 1222 return EBADF; 1223 1224 #ifdef __HAVE_OLD_DISKLABEL 1225 if (xfer == ODIOCSDINFO || xfer == ODIOCWDINFO) { 1226 newlabel = malloc(sizeof *newlabel, M_TEMP, M_WAITOK); 1227 if (newlabel == NULL) 1228 return EIO; 1229 memset(newlabel, 0, sizeof newlabel); 1230 memcpy(newlabel, addr, sizeof (struct olddisklabel)); 1231 lp = newlabel; 1232 } else 1233 #endif 1234 lp = (struct disklabel *)addr; 1235 1236 if ((error = lockmgr(&wd->sc_lock, LK_EXCLUSIVE, NULL)) != 0) 1237 goto bad; 1238 wd->sc_flags |= WDF_LABELLING; 1239 1240 error = setdisklabel(wd->sc_dk.dk_label, 1241 lp, /*wd->sc_dk.dk_openmask : */0, 1242 wd->sc_dk.dk_cpulabel); 1243 if (error == 0) { 1244 if (wd->drvp->state > RESET) 1245 wd->drvp->drive_flags |= DRIVE_RESET; 1246 if (xfer == DIOCWDINFO 1247 #ifdef __HAVE_OLD_DISKLABEL 1248 || xfer == ODIOCWDINFO 1249 #endif 1250 ) 1251 error = writedisklabel(WDLABELDEV(dev), 1252 wdstrategy, wd->sc_dk.dk_label, 1253 wd->sc_dk.dk_cpulabel); 1254 } 1255 1256 wd->sc_flags &= ~WDF_LABELLING; 1257 lockmgr(&wd->sc_lock, LK_RELEASE, NULL); 1258 bad: 1259 #ifdef __HAVE_OLD_DISKLABEL 1260 if (newlabel != NULL) 1261 free(newlabel, M_TEMP); 1262 #endif 1263 return error; 1264 } 1265 1266 case DIOCKLABEL: 1267 if (*(int *)addr) 1268 wd->sc_flags |= WDF_KLABEL; 1269 else 1270 wd->sc_flags &= ~WDF_KLABEL; 1271 return 0; 1272 1273 case DIOCWLABEL: 1274 if ((flag & FWRITE) == 0) 1275 return EBADF; 1276 if (*(int *)addr) 1277 wd->sc_flags |= WDF_WLABEL; 1278 else 1279 wd->sc_flags &= ~WDF_WLABEL; 1280 return 0; 1281 1282 case DIOCGDEFLABEL: 1283 wdgetdefaultlabel(wd, (struct disklabel *)addr); 1284 return 0; 1285 #ifdef __HAVE_OLD_DISKLABEL 1286 case ODIOCGDEFLABEL: 1287 newlabel = malloc(sizeof *newlabel, M_TEMP, M_WAITOK); 1288 if (newlabel == NULL) 1289 return EIO; 1290 wdgetdefaultlabel(wd, newlabel); 1291 if (newlabel->d_npartitions <= OLDMAXPARTITIONS) 1292 memcpy(addr, &newlabel, sizeof (struct olddisklabel)); 1293 else 1294 error = ENOTTY; 1295 free(newlabel, M_TEMP); 1296 return error; 1297 #endif 1298 1299 #ifdef notyet 1300 case DIOCWFORMAT: 1301 if ((flag & FWRITE) == 0) 1302 return EBADF; 1303 { 1304 register struct format_op *fop; 1305 struct iovec aiov; 1306 struct uio auio; 1307 1308 fop = (struct format_op *)addr; 1309 aiov.iov_base = fop->df_buf; 1310 aiov.iov_len = fop->df_count; 1311 auio.uio_iov = &aiov; 1312 auio.uio_iovcnt = 1; 1313 auio.uio_resid = fop->df_count; 1314 auio.uio_segflg = 0; 1315 auio.uio_offset = 1316 fop->df_startblk * wd->sc_dk.dk_label->d_secsize; 1317 auio.uio_procp = p; 1318 error = physio(wdformat, NULL, dev, B_WRITE, minphys, 1319 &auio); 1320 fop->df_count -= auio.uio_resid; 1321 fop->df_reg[0] = wdc->sc_status; 1322 fop->df_reg[1] = wdc->sc_error; 1323 return error; 1324 } 1325 #endif 1326 case DIOCGCACHE: 1327 return wd_getcache(wd, (int *)addr); 1328 1329 case DIOCSCACHE: 1330 return wd_setcache(wd, *(int *)addr); 1331 1332 case DIOCCACHESYNC: 1333 return wd_flushcache(wd, AT_WAIT); 1334 1335 case ATAIOCCOMMAND: 1336 /* 1337 * Make sure this command is (relatively) safe first 1338 */ 1339 if ((((atareq_t *) addr)->flags & ATACMD_READ) == 0 && 1340 (flag & FWRITE) == 0) 1341 return (EBADF); 1342 { 1343 struct wd_ioctl *wi; 1344 atareq_t *atareq = (atareq_t *) addr; 1345 int error; 1346 1347 wi = wi_get(); 1348 wi->wi_softc = wd; 1349 wi->wi_atareq = *atareq; 1350 1351 if (atareq->datalen && atareq->flags & 1352 (ATACMD_READ | ATACMD_WRITE)) { 1353 wi->wi_iov.iov_base = atareq->databuf; 1354 wi->wi_iov.iov_len = atareq->datalen; 1355 wi->wi_uio.uio_iov = &wi->wi_iov; 1356 wi->wi_uio.uio_iovcnt = 1; 1357 wi->wi_uio.uio_resid = atareq->datalen; 1358 wi->wi_uio.uio_offset = 0; 1359 wi->wi_uio.uio_segflg = UIO_USERSPACE; 1360 wi->wi_uio.uio_rw = 1361 (atareq->flags & ATACMD_READ) ? B_READ : B_WRITE; 1362 wi->wi_uio.uio_procp = p; 1363 error = physio(wdioctlstrategy, &wi->wi_bp, dev, 1364 (atareq->flags & ATACMD_READ) ? B_READ : B_WRITE, 1365 minphys, &wi->wi_uio); 1366 } else { 1367 /* No need to call physio if we don't have any 1368 user data */ 1369 wi->wi_bp.b_flags = 0; 1370 wi->wi_bp.b_data = 0; 1371 wi->wi_bp.b_bcount = 0; 1372 wi->wi_bp.b_dev = 0; 1373 wi->wi_bp.b_proc = p; 1374 wdioctlstrategy(&wi->wi_bp); 1375 error = wi->wi_bp.b_error; 1376 } 1377 *atareq = wi->wi_atareq; 1378 wi_free(wi); 1379 return(error); 1380 } 1381 1382 default: 1383 return ENOTTY; 1384 } 1385 1386 #ifdef DIAGNOSTIC 1387 panic("wdioctl: impossible"); 1388 #endif 1389 } 1390 1391 #ifdef B_FORMAT 1392 int 1393 wdformat(struct buf *bp) 1394 { 1395 1396 bp->b_flags |= B_FORMAT; 1397 return wdstrategy(bp); 1398 } 1399 #endif 1400 1401 int 1402 wdsize(dev_t dev) 1403 { 1404 struct wd_softc *wd; 1405 int part, omask; 1406 int size; 1407 1408 WDCDEBUG_PRINT(("wdsize\n"), DEBUG_FUNCS); 1409 1410 wd = device_lookup(&wd_cd, WDUNIT(dev)); 1411 if (wd == NULL) 1412 return (-1); 1413 1414 part = WDPART(dev); 1415 omask = wd->sc_dk.dk_openmask & (1 << part); 1416 1417 if (omask == 0 && wdopen(dev, 0, S_IFBLK, NULL) != 0) 1418 return (-1); 1419 if (wd->sc_dk.dk_label->d_partitions[part].p_fstype != FS_SWAP) 1420 size = -1; 1421 else 1422 size = wd->sc_dk.dk_label->d_partitions[part].p_size * 1423 (wd->sc_dk.dk_label->d_secsize / DEV_BSIZE); 1424 if (omask == 0 && wdclose(dev, 0, S_IFBLK, NULL) != 0) 1425 return (-1); 1426 return (size); 1427 } 1428 1429 /* #define WD_DUMP_NOT_TRUSTED if you just want to watch */ 1430 static int wddoingadump = 0; 1431 static int wddumprecalibrated = 0; 1432 static int wddumpmulti = 1; 1433 1434 /* 1435 * Dump core after a system crash. 1436 */ 1437 int 1438 wddump(dev_t dev, daddr_t blkno, caddr_t va, size_t size) 1439 { 1440 struct wd_softc *wd; /* disk unit to do the I/O */ 1441 struct disklabel *lp; /* disk's disklabel */ 1442 int part, err; 1443 int nblks; /* total number of sectors left to write */ 1444 1445 /* Check if recursive dump; if so, punt. */ 1446 if (wddoingadump) 1447 return EFAULT; 1448 wddoingadump = 1; 1449 1450 wd = device_lookup(&wd_cd, WDUNIT(dev)); 1451 if (wd == NULL) 1452 return (ENXIO); 1453 1454 part = WDPART(dev); 1455 1456 /* Convert to disk sectors. Request must be a multiple of size. */ 1457 lp = wd->sc_dk.dk_label; 1458 if ((size % lp->d_secsize) != 0) 1459 return EFAULT; 1460 nblks = size / lp->d_secsize; 1461 blkno = blkno / (lp->d_secsize / DEV_BSIZE); 1462 1463 /* Check transfer bounds against partition size. */ 1464 if ((blkno < 0) || ((blkno + nblks) > lp->d_partitions[part].p_size)) 1465 return EINVAL; 1466 1467 /* Offset block number to start of partition. */ 1468 blkno += lp->d_partitions[part].p_offset; 1469 1470 /* Recalibrate, if first dump transfer. */ 1471 if (wddumprecalibrated == 0) { 1472 wddumpmulti = wd->sc_multi; 1473 wddumprecalibrated = 1; 1474 wd->atabus->ata_reset_channel(wd->drvp, AT_POLL | AT_RST_EMERG); 1475 wd->drvp->state = RESET; 1476 } 1477 1478 while (nblks > 0) { 1479 wd->sc_bp = NULL; 1480 wd->sc_wdc_bio.blkno = blkno; 1481 wd->sc_wdc_bio.flags = ATA_POLL; 1482 if (wd->sc_flags & WDF_LBA48 && 1483 (blkno > LBA48_THRESHOLD || 1484 (wd->sc_quirks & WD_QUIRK_FORCE_LBA48) != 0)) 1485 wd->sc_wdc_bio.flags |= ATA_LBA48; 1486 if (wd->sc_flags & WDF_LBA) 1487 wd->sc_wdc_bio.flags |= ATA_LBA; 1488 wd->sc_wdc_bio.bcount = 1489 min(nblks, wddumpmulti) * lp->d_secsize; 1490 wd->sc_wdc_bio.databuf = va; 1491 #ifndef WD_DUMP_NOT_TRUSTED 1492 switch (wd->atabus->ata_bio(wd->drvp, &wd->sc_wdc_bio)) { 1493 case WDC_TRY_AGAIN: 1494 panic("wddump: try again"); 1495 break; 1496 case WDC_QUEUED: 1497 panic("wddump: polled command has been queued"); 1498 break; 1499 case WDC_COMPLETE: 1500 break; 1501 } 1502 switch(wd->sc_wdc_bio.error) { 1503 case TIMEOUT: 1504 printf("wddump: device timed out"); 1505 err = EIO; 1506 break; 1507 case ERR_DF: 1508 printf("wddump: drive fault"); 1509 err = EIO; 1510 break; 1511 case ERR_DMA: 1512 printf("wddump: DMA error"); 1513 err = EIO; 1514 break; 1515 case ERROR: 1516 printf("wddump: "); 1517 wdperror(wd); 1518 err = EIO; 1519 break; 1520 case NOERROR: 1521 err = 0; 1522 break; 1523 default: 1524 panic("wddump: unknown error type"); 1525 } 1526 if (err != 0) { 1527 printf("\n"); 1528 return err; 1529 } 1530 #else /* WD_DUMP_NOT_TRUSTED */ 1531 /* Let's just talk about this first... */ 1532 printf("wd%d: dump addr 0x%x, cylin %d, head %d, sector %d\n", 1533 unit, va, cylin, head, sector); 1534 delay(500 * 1000); /* half a second */ 1535 #endif 1536 1537 /* update block count */ 1538 nblks -= min(nblks, wddumpmulti); 1539 blkno += min(nblks, wddumpmulti); 1540 va += min(nblks, wddumpmulti) * lp->d_secsize; 1541 } 1542 1543 wddoingadump = 0; 1544 return 0; 1545 } 1546 1547 #ifdef HAS_BAD144_HANDLING 1548 /* 1549 * Internalize the bad sector table. 1550 */ 1551 void 1552 bad144intern(struct wd_softc *wd) 1553 { 1554 struct dkbad *bt = &wd->sc_dk.dk_cpulabel->bad; 1555 struct disklabel *lp = wd->sc_dk.dk_label; 1556 int i = 0; 1557 1558 WDCDEBUG_PRINT(("bad144intern\n"), DEBUG_XFERS); 1559 1560 for (; i < NBT_BAD; i++) { 1561 if (bt->bt_bad[i].bt_cyl == 0xffff) 1562 break; 1563 wd->sc_badsect[i] = 1564 bt->bt_bad[i].bt_cyl * lp->d_secpercyl + 1565 (bt->bt_bad[i].bt_trksec >> 8) * lp->d_nsectors + 1566 (bt->bt_bad[i].bt_trksec & 0xff); 1567 } 1568 for (; i < NBT_BAD+1; i++) 1569 wd->sc_badsect[i] = -1; 1570 } 1571 #endif 1572 1573 int 1574 wd_get_params(struct wd_softc *wd, u_int8_t flags, struct ataparams *params) 1575 { 1576 switch (wd->atabus->ata_get_params(wd->drvp, flags, params)) { 1577 case CMD_AGAIN: 1578 return 1; 1579 case CMD_ERR: 1580 /* 1581 * We `know' there's a drive here; just assume it's old. 1582 * This geometry is only used to read the MBR and print a 1583 * (false) attach message. 1584 */ 1585 strncpy(params->atap_model, "ST506", 1586 sizeof params->atap_model); 1587 params->atap_config = ATA_CFG_FIXED; 1588 params->atap_cylinders = 1024; 1589 params->atap_heads = 8; 1590 params->atap_sectors = 17; 1591 params->atap_multi = 1; 1592 params->atap_capabilities1 = params->atap_capabilities2 = 0; 1593 wd->drvp->ata_vers = -1; /* Mark it as pre-ATA */ 1594 return 0; 1595 case CMD_OK: 1596 return 0; 1597 default: 1598 panic("wd_get_params: bad return code from ata_get_params"); 1599 /* NOTREACHED */ 1600 } 1601 } 1602 1603 int 1604 wd_getcache(struct wd_softc *wd, int *bitsp) 1605 { 1606 struct ataparams params; 1607 1608 if (wd_get_params(wd, AT_WAIT, ¶ms) != 0) 1609 return EIO; 1610 if (params.atap_cmd_set1 == 0x0000 || 1611 params.atap_cmd_set1 == 0xffff || 1612 (params.atap_cmd_set1 & WDC_CMD1_CACHE) == 0) { 1613 *bitsp = 0; 1614 return 0; 1615 } 1616 *bitsp = DKCACHE_WCHANGE | DKCACHE_READ; 1617 if (params.atap_cmd1_en & WDC_CMD1_CACHE) 1618 *bitsp |= DKCACHE_WRITE; 1619 1620 return 0; 1621 } 1622 1623 int 1624 wd_setcache(struct wd_softc *wd, int bits) 1625 { 1626 struct ataparams params; 1627 struct wdc_command wdc_c; 1628 1629 if (wd_get_params(wd, AT_WAIT, ¶ms) != 0) 1630 return EIO; 1631 1632 if (params.atap_cmd_set1 == 0x0000 || 1633 params.atap_cmd_set1 == 0xffff || 1634 (params.atap_cmd_set1 & WDC_CMD1_CACHE) == 0) 1635 return EOPNOTSUPP; 1636 1637 if ((bits & DKCACHE_READ) == 0 || 1638 (bits & DKCACHE_SAVE) != 0) 1639 return EOPNOTSUPP; 1640 1641 memset(&wdc_c, 0, sizeof(struct wdc_command)); 1642 wdc_c.r_command = SET_FEATURES; 1643 wdc_c.r_st_bmask = 0; 1644 wdc_c.r_st_pmask = 0; 1645 wdc_c.timeout = 30000; /* 30s timeout */ 1646 wdc_c.flags = AT_WAIT; 1647 if (bits & DKCACHE_WRITE) 1648 wdc_c.r_precomp = WDSF_WRITE_CACHE_EN; 1649 else 1650 wdc_c.r_precomp = WDSF_WRITE_CACHE_DS; 1651 if (wd->atabus->ata_exec_command(wd->drvp, &wdc_c) != WDC_COMPLETE) { 1652 printf("%s: wd_setcache command not complete\n", 1653 wd->sc_dev.dv_xname); 1654 return EIO; 1655 } 1656 if (wdc_c.flags & (AT_ERROR | AT_TIMEOU | AT_DF)) { 1657 printf("%s: wd_setcache command error 0x%x\n", 1658 wd->sc_dev.dv_xname, wdc_c.flags); 1659 return EIO; 1660 } 1661 if (wdc_c.flags & ERR_NODEV) 1662 return ENODEV; 1663 return 0; 1664 } 1665 1666 int 1667 wd_flushcache(struct wd_softc *wd, int flags) 1668 { 1669 struct wdc_command wdc_c; 1670 1671 /* 1672 * WDCC_FLUSHCACHE is here since ATA-4, but some drives report 1673 * only ATA-2 and still support it. 1674 */ 1675 if (wd->drvp->ata_vers < 4 && 1676 ((wd->sc_params.atap_cmd_set2 & WDC_CMD2_FC) == 0 || 1677 wd->sc_params.atap_cmd_set2 == 0xffff)) 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 02:09:48 GMT 2025