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sys/dev/ata/wd.c
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1 /* $NetBSD: wd.c,v 1.274.2.14 2007/10/15 23:11:38 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 1.274.2.14 2007/10/15 23:11:38 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@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 int nblks; 753 754 if (bp == NULL) 755 return; 756 bp->b_resid = wd->sc_wdc_bio.bcount; 757 switch (wd->sc_wdc_bio.error) { 758 case ERR_DMA: 759 errmsg = "DMA error"; 760 goto retry; 761 case ERR_DF: 762 errmsg = "device fault"; 763 goto retry; 764 case TIMEOUT: 765 errmsg = "device timeout"; 766 goto retry; 767 case ERR_RESET: 768 errmsg = "channel reset"; 769 goto retry2; 770 case ERROR: 771 /* Don't care about media change bits */ 772 if (wd->sc_wdc_bio.r_error != 0 && 773 (wd->sc_wdc_bio.r_error & ~(WDCE_MC | WDCE_MCR)) == 0) 774 goto noerror; 775 errmsg = "error"; 776 do_perror = 1; 777 if (wd->sc_wdc_bio.r_error & WDCE_IDNF && 778 (wd->sc_quirks & WD_QUIRK_FORCE_LBA48) == 0) { 779 nblks = wd->sc_wdc_bio.bcount / 780 wd->sc_dk.dk_label->d_secsize; 781 /* 782 * If we get a "id not found" when crossing the 783 * LBA48_THRESHOLD, and the drive is larger than 784 * 128GB, then we can assume the drive has the 785 * LBA48 bug and we switch to LBA48. 786 */ 787 if (wd->sc_wdc_bio.blkno <= LBA48_THRESHOLD && 788 wd->sc_wdc_bio.blkno + nblks > LBA48_THRESHOLD && 789 wd->sc_capacity > LBA48_THRESHOLD + 1) { 790 errmsg = "LBA48 bug"; 791 wd->sc_quirks |= WD_QUIRK_FORCE_LBA48; 792 do_perror = 0; 793 goto retry2; 794 } 795 } 796 retry: /* Just reset and retry. Can we do more ? */ 797 wd->atabus->ata_reset_channel(wd->drvp, AT_RST_NOCMD); 798 retry2: 799 diskerr(bp, "wd", errmsg, LOG_PRINTF, 800 wd->sc_wdc_bio.blkdone, wd->sc_dk.dk_label); 801 if (wd->retries < WDIORETRIES) 802 printf(", retrying"); 803 printf("\n"); 804 if (do_perror) 805 wdperror(wd); 806 if (wd->retries < WDIORETRIES) { 807 wd->retries++; 808 callout_reset(&wd->sc_restart_ch, RECOVERYTIME, 809 wdrestart, wd); 810 return; 811 } 812 813 /* 814 * Not all errors indicate a failed block but those that do, 815 * put the block on the bad-block list for the device. Only 816 * do this for reads because the drive should do it for writes, 817 * itself, according to Manuel. 818 */ 819 if ((bp->b_flags & B_READ) && 820 ((wd->drvp->ata_vers >= 4 && wd->sc_wdc_bio.r_error & 64) || 821 (wd->drvp->ata_vers < 4 && wd->sc_wdc_bio.r_error & 192))) { 822 struct disk_badsectors *dbs; 823 824 dbs = malloc(sizeof *dbs, M_TEMP, M_WAITOK); 825 dbs->dbs_min = bp->b_rawblkno; 826 dbs->dbs_max = dbs->dbs_min + (bp->b_bcount >> DEV_BSHIFT) - 1; 827 microtime(&dbs->dbs_failedat); 828 SLIST_INSERT_HEAD(&wd->sc_bslist, dbs, dbs_next); 829 wd->sc_bscount++; 830 } 831 832 bp->b_flags |= B_ERROR; 833 bp->b_error = EIO; 834 break; 835 case NOERROR: 836 noerror: if ((wd->sc_wdc_bio.flags & ATA_CORR) || wd->retries > 0) 837 printf("%s: soft error (corrected)\n", 838 wd->sc_dev.dv_xname); 839 break; 840 case ERR_NODEV: 841 bp->b_flags |= B_ERROR; 842 bp->b_error = EIO; 843 break; 844 } 845 disk_unbusy(&wd->sc_dk, (bp->b_bcount - bp->b_resid), 846 (bp->b_flags & B_READ)); 847 #if NRND > 0 848 rnd_add_uint32(&wd->rnd_source, bp->b_blkno); 849 #endif 850 /* XXX Yuck, but we don't want to increment openings in this case */ 851 if (__predict_false((bp->b_flags & B_CALL) != 0 && 852 bp->b_iodone == wd_split_mod15_write)) 853 biodone(bp); 854 else { 855 biodone(bp); 856 wd->openings++; 857 } 858 wdstart(wd); 859 } 860 861 void 862 wdrestart(void *v) 863 { 864 struct wd_softc *wd = v; 865 struct buf *bp = wd->sc_bp; 866 int s; 867 WDCDEBUG_PRINT(("wdrestart %s\n", wd->sc_dev.dv_xname), 868 DEBUG_XFERS); 869 870 s = splbio(); 871 __wdstart(v, bp); 872 splx(s); 873 } 874 875 int 876 wdread(dev_t dev, struct uio *uio, int flags) 877 { 878 879 WDCDEBUG_PRINT(("wdread\n"), DEBUG_XFERS); 880 return (physio(wdstrategy, NULL, dev, B_READ, minphys, uio)); 881 } 882 883 int 884 wdwrite(dev_t dev, struct uio *uio, int flags) 885 { 886 887 WDCDEBUG_PRINT(("wdwrite\n"), DEBUG_XFERS); 888 return (physio(wdstrategy, NULL, dev, B_WRITE, minphys, uio)); 889 } 890 891 int 892 wdopen(dev_t dev, int flag, int fmt, struct proc *p) 893 { 894 struct wd_softc *wd; 895 int part, error; 896 897 WDCDEBUG_PRINT(("wdopen\n"), DEBUG_FUNCS); 898 wd = device_lookup(&wd_cd, WDUNIT(dev)); 899 if (wd == NULL) 900 return (ENXIO); 901 902 if ((wd->sc_dev.dv_flags & DVF_ACTIVE) == 0) 903 return (ENODEV); 904 905 /* 906 * If this is the first open of this device, add a reference 907 * to the adapter. 908 */ 909 if (wd->sc_dk.dk_openmask == 0 && 910 (error = wd->atabus->ata_addref(wd->drvp)) != 0) 911 return (error); 912 913 if ((error = lockmgr(&wd->sc_lock, LK_EXCLUSIVE, NULL)) != 0) 914 goto bad4; 915 916 if (wd->sc_dk.dk_openmask != 0) { 917 /* 918 * If any partition is open, but the disk has been invalidated, 919 * disallow further opens. 920 */ 921 if ((wd->sc_flags & WDF_LOADED) == 0) { 922 error = EIO; 923 goto bad3; 924 } 925 } else { 926 if ((wd->sc_flags & WDF_LOADED) == 0) { 927 wd->sc_flags |= WDF_LOADED; 928 929 /* Load the physical device parameters. */ 930 wd_get_params(wd, AT_WAIT, &wd->sc_params); 931 932 /* Load the partition info if not already loaded. */ 933 wdgetdisklabel(wd); 934 } 935 } 936 937 part = WDPART(dev); 938 939 /* Check that the partition exists. */ 940 if (part != RAW_PART && 941 (part >= wd->sc_dk.dk_label->d_npartitions || 942 wd->sc_dk.dk_label->d_partitions[part].p_fstype == FS_UNUSED)) { 943 error = ENXIO; 944 goto bad; 945 } 946 947 /* Insure only one open at a time. */ 948 switch (fmt) { 949 case S_IFCHR: 950 wd->sc_dk.dk_copenmask |= (1 << part); 951 break; 952 case S_IFBLK: 953 wd->sc_dk.dk_bopenmask |= (1 << part); 954 break; 955 } 956 wd->sc_dk.dk_openmask = 957 wd->sc_dk.dk_copenmask | wd->sc_dk.dk_bopenmask; 958 959 lockmgr(&wd->sc_lock, LK_RELEASE, NULL); 960 return 0; 961 962 bad: 963 if (wd->sc_dk.dk_openmask == 0) { 964 } 965 966 bad3: 967 lockmgr(&wd->sc_lock, LK_RELEASE, NULL); 968 bad4: 969 if (wd->sc_dk.dk_openmask == 0) 970 wd->atabus->ata_delref(wd->drvp); 971 return error; 972 } 973 974 int 975 wdclose(dev_t dev, int flag, int fmt, struct proc *p) 976 { 977 struct wd_softc *wd = device_lookup(&wd_cd, WDUNIT(dev)); 978 int part = WDPART(dev); 979 int error; 980 981 WDCDEBUG_PRINT(("wdclose\n"), DEBUG_FUNCS); 982 if ((error = lockmgr(&wd->sc_lock, LK_EXCLUSIVE, NULL)) != 0) 983 return error; 984 985 switch (fmt) { 986 case S_IFCHR: 987 wd->sc_dk.dk_copenmask &= ~(1 << part); 988 break; 989 case S_IFBLK: 990 wd->sc_dk.dk_bopenmask &= ~(1 << part); 991 break; 992 } 993 wd->sc_dk.dk_openmask = 994 wd->sc_dk.dk_copenmask | wd->sc_dk.dk_bopenmask; 995 996 if (wd->sc_dk.dk_openmask == 0) { 997 wd_flushcache(wd, AT_WAIT); 998 /* XXXX Must wait for I/O to complete! */ 999 1000 if (! (wd->sc_flags & WDF_KLABEL)) 1001 wd->sc_flags &= ~WDF_LOADED; 1002 1003 wd->atabus->ata_delref(wd->drvp); 1004 } 1005 1006 lockmgr(&wd->sc_lock, LK_RELEASE, NULL); 1007 return 0; 1008 } 1009 1010 void 1011 wdgetdefaultlabel(struct wd_softc *wd, struct disklabel *lp) 1012 { 1013 1014 WDCDEBUG_PRINT(("wdgetdefaultlabel\n"), DEBUG_FUNCS); 1015 memset(lp, 0, sizeof(struct disklabel)); 1016 1017 lp->d_secsize = DEV_BSIZE; 1018 lp->d_ntracks = wd->sc_params.atap_heads; 1019 lp->d_nsectors = wd->sc_params.atap_sectors; 1020 lp->d_ncylinders = (wd->sc_flags & WDF_LBA) ? wd->sc_capacity / 1021 (wd->sc_params.atap_heads * wd->sc_params.atap_sectors) : 1022 wd->sc_params.atap_cylinders; 1023 lp->d_secpercyl = lp->d_ntracks * lp->d_nsectors; 1024 1025 if (strcmp(wd->sc_params.atap_model, "ST506") == 0) 1026 lp->d_type = DTYPE_ST506; 1027 else 1028 lp->d_type = DTYPE_ESDI; 1029 1030 strncpy(lp->d_typename, wd->sc_params.atap_model, 16); 1031 strncpy(lp->d_packname, "fictitious", 16); 1032 if (wd->sc_capacity > UINT32_MAX) 1033 lp->d_secperunit = UINT32_MAX; 1034 else 1035 lp->d_secperunit = wd->sc_capacity; 1036 lp->d_rpm = 3600; 1037 lp->d_interleave = 1; 1038 lp->d_flags = 0; 1039 1040 lp->d_partitions[RAW_PART].p_offset = 0; 1041 lp->d_partitions[RAW_PART].p_size = 1042 lp->d_secperunit * (lp->d_secsize / DEV_BSIZE); 1043 lp->d_partitions[RAW_PART].p_fstype = FS_UNUSED; 1044 lp->d_npartitions = RAW_PART + 1; 1045 1046 lp->d_magic = DISKMAGIC; 1047 lp->d_magic2 = DISKMAGIC; 1048 lp->d_checksum = dkcksum(lp); 1049 } 1050 1051 /* 1052 * Fabricate a default disk label, and try to read the correct one. 1053 */ 1054 void 1055 wdgetdisklabel(struct wd_softc *wd) 1056 { 1057 struct disklabel *lp = wd->sc_dk.dk_label; 1058 const char *errstring; 1059 1060 WDCDEBUG_PRINT(("wdgetdisklabel\n"), DEBUG_FUNCS); 1061 1062 memset(wd->sc_dk.dk_cpulabel, 0, sizeof(struct cpu_disklabel)); 1063 1064 wdgetdefaultlabel(wd, lp); 1065 1066 wd->sc_badsect[0] = -1; 1067 1068 if (wd->drvp->state > RESET) 1069 wd->drvp->drive_flags |= DRIVE_RESET; 1070 errstring = readdisklabel(MAKEWDDEV(0, wd->sc_dev.dv_unit, RAW_PART), 1071 wdstrategy, lp, wd->sc_dk.dk_cpulabel); 1072 if (errstring) { 1073 /* 1074 * This probably happened because the drive's default 1075 * geometry doesn't match the DOS geometry. We 1076 * assume the DOS geometry is now in the label and try 1077 * again. XXX This is a kluge. 1078 */ 1079 if (wd->drvp->state > RESET) 1080 wd->drvp->drive_flags |= DRIVE_RESET; 1081 errstring = readdisklabel(MAKEWDDEV(0, wd->sc_dev.dv_unit, 1082 RAW_PART), wdstrategy, lp, wd->sc_dk.dk_cpulabel); 1083 } 1084 if (errstring) { 1085 printf("%s: %s\n", wd->sc_dev.dv_xname, errstring); 1086 return; 1087 } 1088 1089 if (wd->drvp->state > RESET) 1090 wd->drvp->drive_flags |= DRIVE_RESET; 1091 #ifdef HAS_BAD144_HANDLING 1092 if ((lp->d_flags & D_BADSECT) != 0) 1093 bad144intern(wd); 1094 #endif 1095 } 1096 1097 void 1098 wdperror(const struct wd_softc *wd) 1099 { 1100 static const char *const errstr0_3[] = {"address mark not found", 1101 "track 0 not found", "aborted command", "media change requested", 1102 "id not found", "media changed", "uncorrectable data error", 1103 "bad block detected"}; 1104 static const char *const errstr4_5[] = { 1105 "obsolete (address mark not found)", 1106 "no media/write protected", "aborted command", 1107 "media change requested", "id not found", "media changed", 1108 "uncorrectable data error", "interface CRC error"}; 1109 const char *const *errstr; 1110 int i; 1111 char *sep = ""; 1112 1113 const char *devname = wd->sc_dev.dv_xname; 1114 struct ata_drive_datas *drvp = wd->drvp; 1115 int errno = wd->sc_wdc_bio.r_error; 1116 1117 if (drvp->ata_vers >= 4) 1118 errstr = errstr4_5; 1119 else 1120 errstr = errstr0_3; 1121 1122 printf("%s: (", devname); 1123 1124 if (errno == 0) 1125 printf("error not notified"); 1126 1127 for (i = 0; i < 8; i++) { 1128 if (errno & (1 << i)) { 1129 printf("%s%s", sep, errstr[i]); 1130 sep = ", "; 1131 } 1132 } 1133 printf(")\n"); 1134 } 1135 1136 int 1137 wdioctl(dev_t dev, u_long xfer, caddr_t addr, int flag, struct proc *p) 1138 { 1139 struct wd_softc *wd = device_lookup(&wd_cd, WDUNIT(dev)); 1140 int error = 0; 1141 #ifdef __HAVE_OLD_DISKLABEL 1142 struct disklabel *newlabel = NULL; 1143 #endif 1144 1145 WDCDEBUG_PRINT(("wdioctl\n"), DEBUG_FUNCS); 1146 1147 if ((wd->sc_flags & WDF_LOADED) == 0) 1148 return EIO; 1149 1150 switch (xfer) { 1151 #ifdef HAS_BAD144_HANDLING 1152 case DIOCSBAD: 1153 if ((flag & FWRITE) == 0) 1154 return EBADF; 1155 wd->sc_dk.dk_cpulabel->bad = *(struct dkbad *)addr; 1156 wd->sc_dk.dk_label->d_flags |= D_BADSECT; 1157 bad144intern(wd); 1158 return 0; 1159 #endif 1160 1161 case DIOCBSLIST : 1162 { 1163 u_int32_t count, missing, skip; 1164 struct disk_badsecinfo dbsi; 1165 struct disk_badsectors *dbs; 1166 size_t available; 1167 caddr_t laddr; 1168 1169 dbsi = *(struct disk_badsecinfo *)addr; 1170 missing = wd->sc_bscount; 1171 count = 0; 1172 available = dbsi.dbsi_bufsize; 1173 skip = dbsi.dbsi_skip; 1174 laddr = dbsi.dbsi_buffer; 1175 1176 /* 1177 * We start this loop with the expectation that all of the 1178 * entries will be missed and decrement this counter each 1179 * time we either skip over one (already copied out) or 1180 * we actually copy it back to user space. The structs 1181 * holding the bad sector information are copied directly 1182 * back to user space whilst the summary is returned via 1183 * the struct passed in via the ioctl. 1184 */ 1185 SLIST_FOREACH(dbs, &wd->sc_bslist, dbs_next) { 1186 if (skip > 0) { 1187 missing--; 1188 skip--; 1189 continue; 1190 } 1191 if (available < sizeof(*dbs)) 1192 break; 1193 available -= sizeof(*dbs); 1194 copyout(dbs, laddr, sizeof(*dbs)); 1195 laddr += sizeof(*dbs); 1196 missing--; 1197 count++; 1198 } 1199 dbsi.dbsi_left = missing; 1200 dbsi.dbsi_copied = count; 1201 *(struct disk_badsecinfo *)addr = dbsi; 1202 return 0; 1203 } 1204 1205 case DIOCBSFLUSH : 1206 /* Clean out the bad sector list */ 1207 while (!SLIST_EMPTY(&wd->sc_bslist)) { 1208 void *head = SLIST_FIRST(&wd->sc_bslist); 1209 SLIST_REMOVE_HEAD(&wd->sc_bslist, dbs_next); 1210 free(head, M_TEMP); 1211 } 1212 wd->sc_bscount = 0; 1213 return 0; 1214 1215 case DIOCGDINFO: 1216 *(struct disklabel *)addr = *(wd->sc_dk.dk_label); 1217 return 0; 1218 #ifdef __HAVE_OLD_DISKLABEL 1219 case ODIOCGDINFO: 1220 newlabel = malloc(sizeof *newlabel, M_TEMP, M_WAITOK); 1221 if (newlabel == NULL) 1222 return EIO; 1223 *newlabel = *(wd->sc_dk.dk_label); 1224 if (newlabel->d_npartitions <= OLDMAXPARTITIONS) 1225 memcpy(addr, newlabel, sizeof (struct olddisklabel)); 1226 else 1227 error = ENOTTY; 1228 free(newlabel, M_TEMP); 1229 return error; 1230 #endif 1231 1232 case DIOCGPART: 1233 ((struct partinfo *)addr)->disklab = wd->sc_dk.dk_label; 1234 ((struct partinfo *)addr)->part = 1235 &wd->sc_dk.dk_label->d_partitions[WDPART(dev)]; 1236 return 0; 1237 1238 case DIOCWDINFO: 1239 case DIOCSDINFO: 1240 #ifdef __HAVE_OLD_DISKLABEL 1241 case ODIOCWDINFO: 1242 case ODIOCSDINFO: 1243 #endif 1244 { 1245 struct disklabel *lp; 1246 1247 if ((flag & FWRITE) == 0) 1248 return EBADF; 1249 1250 #ifdef __HAVE_OLD_DISKLABEL 1251 if (xfer == ODIOCSDINFO || xfer == ODIOCWDINFO) { 1252 newlabel = malloc(sizeof *newlabel, M_TEMP, M_WAITOK); 1253 if (newlabel == NULL) 1254 return EIO; 1255 memset(newlabel, 0, sizeof newlabel); 1256 memcpy(newlabel, addr, sizeof (struct olddisklabel)); 1257 lp = newlabel; 1258 } else 1259 #endif 1260 lp = (struct disklabel *)addr; 1261 1262 if ((error = lockmgr(&wd->sc_lock, LK_EXCLUSIVE, NULL)) != 0) 1263 goto bad; 1264 wd->sc_flags |= WDF_LABELLING; 1265 1266 error = setdisklabel(wd->sc_dk.dk_label, 1267 lp, /*wd->sc_dk.dk_openmask : */0, 1268 wd->sc_dk.dk_cpulabel); 1269 if (error == 0) { 1270 if (wd->drvp->state > RESET) 1271 wd->drvp->drive_flags |= DRIVE_RESET; 1272 if (xfer == DIOCWDINFO 1273 #ifdef __HAVE_OLD_DISKLABEL 1274 || xfer == ODIOCWDINFO 1275 #endif 1276 ) 1277 error = writedisklabel(WDLABELDEV(dev), 1278 wdstrategy, wd->sc_dk.dk_label, 1279 wd->sc_dk.dk_cpulabel); 1280 } 1281 1282 wd->sc_flags &= ~WDF_LABELLING; 1283 lockmgr(&wd->sc_lock, LK_RELEASE, NULL); 1284 bad: 1285 #ifdef __HAVE_OLD_DISKLABEL 1286 if (newlabel != NULL) 1287 free(newlabel, M_TEMP); 1288 #endif 1289 return error; 1290 } 1291 1292 case DIOCKLABEL: 1293 if (*(int *)addr) 1294 wd->sc_flags |= WDF_KLABEL; 1295 else 1296 wd->sc_flags &= ~WDF_KLABEL; 1297 return 0; 1298 1299 case DIOCWLABEL: 1300 if ((flag & FWRITE) == 0) 1301 return EBADF; 1302 if (*(int *)addr) 1303 wd->sc_flags |= WDF_WLABEL; 1304 else 1305 wd->sc_flags &= ~WDF_WLABEL; 1306 return 0; 1307 1308 case DIOCGDEFLABEL: 1309 wdgetdefaultlabel(wd, (struct disklabel *)addr); 1310 return 0; 1311 #ifdef __HAVE_OLD_DISKLABEL 1312 case ODIOCGDEFLABEL: 1313 newlabel = malloc(sizeof *newlabel, M_TEMP, M_WAITOK); 1314 if (newlabel == NULL) 1315 return EIO; 1316 wdgetdefaultlabel(wd, newlabel); 1317 if (newlabel->d_npartitions <= OLDMAXPARTITIONS) 1318 memcpy(addr, &newlabel, sizeof (struct olddisklabel)); 1319 else 1320 error = ENOTTY; 1321 free(newlabel, M_TEMP); 1322 return error; 1323 #endif 1324 1325 #ifdef notyet 1326 case DIOCWFORMAT: 1327 if ((flag & FWRITE) == 0) 1328 return EBADF; 1329 { 1330 register struct format_op *fop; 1331 struct iovec aiov; 1332 struct uio auio; 1333 1334 fop = (struct format_op *)addr; 1335 aiov.iov_base = fop->df_buf; 1336 aiov.iov_len = fop->df_count; 1337 auio.uio_iov = &aiov; 1338 auio.uio_iovcnt = 1; 1339 auio.uio_resid = fop->df_count; 1340 auio.uio_segflg = 0; 1341 auio.uio_offset = 1342 fop->df_startblk * wd->sc_dk.dk_label->d_secsize; 1343 auio.uio_procp = p; 1344 error = physio(wdformat, NULL, dev, B_WRITE, minphys, 1345 &auio); 1346 fop->df_count -= auio.uio_resid; 1347 fop->df_reg[0] = wdc->sc_status; 1348 fop->df_reg[1] = wdc->sc_error; 1349 return error; 1350 } 1351 #endif 1352 case DIOCGCACHE: 1353 return wd_getcache(wd, (int *)addr); 1354 1355 case DIOCSCACHE: 1356 return wd_setcache(wd, *(int *)addr); 1357 1358 case DIOCCACHESYNC: 1359 return wd_flushcache(wd, AT_WAIT); 1360 1361 case ATAIOCCOMMAND: 1362 /* 1363 * Make sure this command is (relatively) safe first 1364 */ 1365 if ((((atareq_t *) addr)->flags & ATACMD_READ) == 0 && 1366 (flag & FWRITE) == 0) 1367 return (EBADF); 1368 { 1369 struct wd_ioctl *wi; 1370 atareq_t *atareq = (atareq_t *) addr; 1371 int error; 1372 1373 wi = wi_get(); 1374 wi->wi_softc = wd; 1375 wi->wi_atareq = *atareq; 1376 1377 if (atareq->datalen && atareq->flags & 1378 (ATACMD_READ | ATACMD_WRITE)) { 1379 wi->wi_iov.iov_base = atareq->databuf; 1380 wi->wi_iov.iov_len = atareq->datalen; 1381 wi->wi_uio.uio_iov = &wi->wi_iov; 1382 wi->wi_uio.uio_iovcnt = 1; 1383 wi->wi_uio.uio_resid = atareq->datalen; 1384 wi->wi_uio.uio_offset = 0; 1385 wi->wi_uio.uio_segflg = UIO_USERSPACE; 1386 wi->wi_uio.uio_rw = 1387 (atareq->flags & ATACMD_READ) ? B_READ : B_WRITE; 1388 wi->wi_uio.uio_procp = p; 1389 error = physio(wdioctlstrategy, &wi->wi_bp, dev, 1390 (atareq->flags & ATACMD_READ) ? B_READ : B_WRITE, 1391 minphys, &wi->wi_uio); 1392 } else { 1393 /* No need to call physio if we don't have any 1394 user data */ 1395 wi->wi_bp.b_flags = 0; 1396 wi->wi_bp.b_data = 0; 1397 wi->wi_bp.b_bcount = 0; 1398 wi->wi_bp.b_dev = 0; 1399 wi->wi_bp.b_proc = p; 1400 wdioctlstrategy(&wi->wi_bp); 1401 error = wi->wi_bp.b_error; 1402 } 1403 *atareq = wi->wi_atareq; 1404 wi_free(wi); 1405 return(error); 1406 } 1407 1408 default: 1409 return ENOTTY; 1410 } 1411 1412 #ifdef DIAGNOSTIC 1413 panic("wdioctl: impossible"); 1414 #endif 1415 } 1416 1417 #ifdef B_FORMAT 1418 int 1419 wdformat(struct buf *bp) 1420 { 1421 1422 bp->b_flags |= B_FORMAT; 1423 return wdstrategy(bp); 1424 } 1425 #endif 1426 1427 int 1428 wdsize(dev_t dev) 1429 { 1430 struct wd_softc *wd; 1431 int part, omask; 1432 int size; 1433 1434 WDCDEBUG_PRINT(("wdsize\n"), DEBUG_FUNCS); 1435 1436 wd = device_lookup(&wd_cd, WDUNIT(dev)); 1437 if (wd == NULL) 1438 return (-1); 1439 1440 part = WDPART(dev); 1441 omask = wd->sc_dk.dk_openmask & (1 << part); 1442 1443 if (omask == 0 && wdopen(dev, 0, S_IFBLK, NULL) != 0) 1444 return (-1); 1445 if (wd->sc_dk.dk_label->d_partitions[part].p_fstype != FS_SWAP) 1446 size = -1; 1447 else 1448 size = wd->sc_dk.dk_label->d_partitions[part].p_size * 1449 (wd->sc_dk.dk_label->d_secsize / DEV_BSIZE); 1450 if (omask == 0 && wdclose(dev, 0, S_IFBLK, NULL) != 0) 1451 return (-1); 1452 return (size); 1453 } 1454 1455 /* #define WD_DUMP_NOT_TRUSTED if you just want to watch */ 1456 static int wddoingadump = 0; 1457 static int wddumprecalibrated = 0; 1458 static int wddumpmulti = 1; 1459 1460 /* 1461 * Dump core after a system crash. 1462 */ 1463 int 1464 wddump(dev_t dev, daddr_t blkno, caddr_t va, size_t size) 1465 { 1466 struct wd_softc *wd; /* disk unit to do the I/O */ 1467 struct disklabel *lp; /* disk's disklabel */ 1468 int part, err; 1469 int nblks; /* total number of sectors left to write */ 1470 1471 /* Check if recursive dump; if so, punt. */ 1472 if (wddoingadump) 1473 return EFAULT; 1474 wddoingadump = 1; 1475 1476 wd = device_lookup(&wd_cd, WDUNIT(dev)); 1477 if (wd == NULL) 1478 return (ENXIO); 1479 1480 part = WDPART(dev); 1481 1482 /* Convert to disk sectors. Request must be a multiple of size. */ 1483 lp = wd->sc_dk.dk_label; 1484 if ((size % lp->d_secsize) != 0) 1485 return EFAULT; 1486 nblks = size / lp->d_secsize; 1487 blkno = blkno / (lp->d_secsize / DEV_BSIZE); 1488 1489 /* Check transfer bounds against partition size. */ 1490 if ((blkno < 0) || ((blkno + nblks) > lp->d_partitions[part].p_size)) 1491 return EINVAL; 1492 1493 /* Offset block number to start of partition. */ 1494 blkno += lp->d_partitions[part].p_offset; 1495 1496 /* Recalibrate, if first dump transfer. */ 1497 if (wddumprecalibrated == 0) { 1498 wddumpmulti = wd->sc_multi; 1499 wddumprecalibrated = 1; 1500 wd->atabus->ata_reset_channel(wd->drvp, AT_POLL | AT_RST_EMERG); 1501 wd->drvp->state = RESET; 1502 } 1503 1504 while (nblks > 0) { 1505 wd->sc_bp = NULL; 1506 wd->sc_wdc_bio.blkno = blkno; 1507 wd->sc_wdc_bio.flags = ATA_POLL; 1508 if (wd->sc_flags & WDF_LBA48 && 1509 (blkno > LBA48_THRESHOLD || 1510 (wd->sc_quirks & WD_QUIRK_FORCE_LBA48) != 0)) 1511 wd->sc_wdc_bio.flags |= ATA_LBA48; 1512 if (wd->sc_flags & WDF_LBA) 1513 wd->sc_wdc_bio.flags |= ATA_LBA; 1514 wd->sc_wdc_bio.bcount = 1515 min(nblks, wddumpmulti) * lp->d_secsize; 1516 wd->sc_wdc_bio.databuf = va; 1517 #ifndef WD_DUMP_NOT_TRUSTED 1518 switch (wd->atabus->ata_bio(wd->drvp, &wd->sc_wdc_bio)) { 1519 case WDC_TRY_AGAIN: 1520 panic("wddump: try again"); 1521 break; 1522 case WDC_QUEUED: 1523 panic("wddump: polled command has been queued"); 1524 break; 1525 case WDC_COMPLETE: 1526 break; 1527 } 1528 switch(wd->sc_wdc_bio.error) { 1529 case TIMEOUT: 1530 printf("wddump: device timed out"); 1531 err = EIO; 1532 break; 1533 case ERR_DF: 1534 printf("wddump: drive fault"); 1535 err = EIO; 1536 break; 1537 case ERR_DMA: 1538 printf("wddump: DMA error"); 1539 err = EIO; 1540 break; 1541 case ERROR: 1542 printf("wddump: "); 1543 wdperror(wd); 1544 err = EIO; 1545 break; 1546 case NOERROR: 1547 err = 0; 1548 break; 1549 default: 1550 panic("wddump: unknown error type"); 1551 } 1552 if (err != 0) { 1553 printf("\n"); 1554 return err; 1555 } 1556 #else /* WD_DUMP_NOT_TRUSTED */ 1557 /* Let's just talk about this first... */ 1558 printf("wd%d: dump addr 0x%x, cylin %d, head %d, sector %d\n", 1559 unit, va, cylin, head, sector); 1560 delay(500 * 1000); /* half a second */ 1561 #endif 1562 1563 /* update block count */ 1564 nblks -= min(nblks, wddumpmulti); 1565 blkno += min(nblks, wddumpmulti); 1566 va += min(nblks, wddumpmulti) * lp->d_secsize; 1567 } 1568 1569 wddoingadump = 0; 1570 return 0; 1571 } 1572 1573 #ifdef HAS_BAD144_HANDLING 1574 /* 1575 * Internalize the bad sector table. 1576 */ 1577 void 1578 bad144intern(struct wd_softc *wd) 1579 { 1580 struct dkbad *bt = &wd->sc_dk.dk_cpulabel->bad; 1581 struct disklabel *lp = wd->sc_dk.dk_label; 1582 int i = 0; 1583 1584 WDCDEBUG_PRINT(("bad144intern\n"), DEBUG_XFERS); 1585 1586 for (; i < NBT_BAD; i++) { 1587 if (bt->bt_bad[i].bt_cyl == 0xffff) 1588 break; 1589 wd->sc_badsect[i] = 1590 bt->bt_bad[i].bt_cyl * lp->d_secpercyl + 1591 (bt->bt_bad[i].bt_trksec >> 8) * lp->d_nsectors + 1592 (bt->bt_bad[i].bt_trksec & 0xff); 1593 } 1594 for (; i < NBT_BAD+1; i++) 1595 wd->sc_badsect[i] = -1; 1596 } 1597 #endif 1598 1599 int 1600 wd_get_params(struct wd_softc *wd, u_int8_t flags, struct ataparams *params) 1601 { 1602 switch (wd->atabus->ata_get_params(wd->drvp, flags, params)) { 1603 case CMD_AGAIN: 1604 return 1; 1605 case CMD_ERR: 1606 /* 1607 * We `know' there's a drive here; just assume it's old. 1608 * This geometry is only used to read the MBR and print a 1609 * (false) attach message. 1610 */ 1611 strncpy(params->atap_model, "ST506", 1612 sizeof params->atap_model); 1613 params->atap_config = ATA_CFG_FIXED; 1614 params->atap_cylinders = 1024; 1615 params->atap_heads = 8; 1616 params->atap_sectors = 17; 1617 params->atap_multi = 1; 1618 params->atap_capabilities1 = params->atap_capabilities2 = 0; 1619 wd->drvp->ata_vers = -1; /* Mark it as pre-ATA */ 1620 return 0; 1621 case CMD_OK: 1622 return 0; 1623 default: 1624 panic("wd_get_params: bad return code from ata_get_params"); 1625 /* NOTREACHED */ 1626 } 1627 } 1628 1629 int 1630 wd_getcache(struct wd_softc *wd, int *bitsp) 1631 { 1632 struct ataparams params; 1633 1634 if (wd_get_params(wd, AT_WAIT, ¶ms) != 0) 1635 return EIO; 1636 if (params.atap_cmd_set1 == 0x0000 || 1637 params.atap_cmd_set1 == 0xffff || 1638 (params.atap_cmd_set1 & WDC_CMD1_CACHE) == 0) { 1639 *bitsp = 0; 1640 return 0; 1641 } 1642 *bitsp = DKCACHE_WCHANGE | DKCACHE_READ; 1643 if (params.atap_cmd1_en & WDC_CMD1_CACHE) 1644 *bitsp |= DKCACHE_WRITE; 1645 1646 return 0; 1647 } 1648 1649 int 1650 wd_setcache(struct wd_softc *wd, int bits) 1651 { 1652 struct ataparams params; 1653 struct wdc_command wdc_c; 1654 1655 if (wd_get_params(wd, AT_WAIT, ¶ms) != 0) 1656 return EIO; 1657 1658 if (params.atap_cmd_set1 == 0x0000 || 1659 params.atap_cmd_set1 == 0xffff || 1660 (params.atap_cmd_set1 & WDC_CMD1_CACHE) == 0) 1661 return EOPNOTSUPP; 1662 1663 if ((bits & DKCACHE_READ) == 0 || 1664 (bits & DKCACHE_SAVE) != 0) 1665 return EOPNOTSUPP; 1666 1667 memset(&wdc_c, 0, sizeof(struct wdc_command)); 1668 wdc_c.r_command = SET_FEATURES; 1669 wdc_c.r_st_bmask = 0; 1670 wdc_c.r_st_pmask = 0; 1671 wdc_c.timeout = 30000; /* 30s timeout */ 1672 wdc_c.flags = AT_WAIT; 1673 if (bits & DKCACHE_WRITE) 1674 wdc_c.r_precomp = WDSF_WRITE_CACHE_EN; 1675 else 1676 wdc_c.r_precomp = WDSF_WRITE_CACHE_DS; 1677 if (wd->atabus->ata_exec_command(wd->drvp, &wdc_c) != WDC_COMPLETE) { 1678 printf("%s: wd_setcache command not complete\n", 1679 wd->sc_dev.dv_xname); 1680 return EIO; 1681 } 1682 if (wdc_c.flags & (AT_ERROR | AT_TIMEOU | AT_DF)) { 1683 printf("%s: wd_setcache command error 0x%x\n", 1684 wd->sc_dev.dv_xname, wdc_c.flags); 1685 return EIO; 1686 } 1687 if (wdc_c.flags & ERR_NODEV) 1688 return ENODEV; 1689 return 0; 1690 } 1691 1692 int 1693 wd_flushcache(struct wd_softc *wd, int flags) 1694 { 1695 struct wdc_command wdc_c; 1696 1697 if (wd->drvp->ata_vers < 4) /* WDCC_FLUSHCACHE is here since ATA-4 */ 1698 return ENODEV; 1699 memset(&wdc_c, 0, sizeof(struct wdc_command)); 1700 if ((wd->sc_params.atap_cmd2_en & ATA_CMD2_LBA48) != 0 && 1701 (wd->sc_params.atap_cmd2_en & ATA_CMD2_FCE) != 0) 1702 wdc_c.r_command = WDCC_FLUSHCACHE_EXT; 1703 else 1704 wdc_c.r_command = WDCC_FLUSHCACHE; 1705 wdc_c.r_st_bmask = WDCS_DRDY; 1706 wdc_c.r_st_pmask = WDCS_DRDY; 1707 wdc_c.flags = flags; 1708 wdc_c.timeout = 30000; /* 30s timeout */ 1709 if (wd->atabus->ata_exec_command(wd->drvp, &wdc_c) != WDC_COMPLETE) { 1710 printf("%s: flush cache command didn't complete\n", 1711 wd->sc_dev.dv_xname); 1712 return EIO; 1713 } 1714 if (wdc_c.flags & ERR_NODEV) 1715 return ENODEV; 1716 if (wdc_c.flags & AT_TIMEOU) { 1717 printf("%s: flush cache command timeout\n", 1718 wd->sc_dev.dv_xname); 1719 return EIO; 1720 } 1721 if (wdc_c.flags & AT_ERROR) { 1722 if (wdc_c.r_error == WDCE_ABRT) /* command not supported */ 1723 return ENODEV; 1724 printf("%s: flush cache command: error 0x%x\n", 1725 wd->sc_dev.dv_xname, wdc_c.r_error); 1726 return EIO; 1727 } 1728 if (wdc_c.flags & AT_DF) { 1729 printf("%s: flush cache command: drive fault\n", 1730 wd->sc_dev.dv_xname); 1731 return EIO; 1732 } 1733 return 0; 1734 } 1735 1736 void 1737 wd_shutdown(void *arg) 1738 { 1739 struct wd_softc *wd = arg; 1740 wd_flushcache(wd, AT_POLL); 1741 } 1742 1743 /* 1744 * Allocate space for a ioctl queue structure. Mostly taken from 1745 * scsipi_ioctl.c 1746 */ 1747 struct wd_ioctl * 1748 wi_get(void) 1749 { 1750 struct wd_ioctl *wi; 1751 int s; 1752 1753 wi = malloc(sizeof(struct wd_ioctl), M_TEMP, M_WAITOK|M_ZERO); 1754 simple_lock_init(&wi->wi_bp.b_interlock); 1755 s = splbio(); 1756 LIST_INSERT_HEAD(&wi_head, wi, wi_list); 1757 splx(s); 1758 return (wi); 1759 } 1760 1761 /* 1762 * Free an ioctl structure and remove it from our list 1763 */ 1764 1765 void 1766 wi_free(struct wd_ioctl *wi) 1767 { 1768 int s; 1769 1770 s = splbio(); 1771 LIST_REMOVE(wi, wi_list); 1772 splx(s); 1773 free(wi, M_TEMP); 1774 } 1775 1776 /* 1777 * Find a wd_ioctl structure based on the struct buf. 1778 */ 1779 1780 struct wd_ioctl * 1781 wi_find(struct buf *bp) 1782 { 1783 struct wd_ioctl *wi; 1784 int s; 1785 1786 s = splbio(); 1787 for (wi = wi_head.lh_first; wi != 0; wi = wi->wi_list.le_next) 1788 if (bp == &wi->wi_bp) 1789 break; 1790 splx(s); 1791 return (wi); 1792 } 1793 1794 /* 1795 * Ioctl pseudo strategy routine 1796 * 1797 * This is mostly stolen from scsipi_ioctl.c:scsistrategy(). What 1798 * happens here is: 1799 * 1800 * - wdioctl() queues a wd_ioctl structure. 1801 * 1802 * - wdioctl() calls physio/wdioctlstrategy based on whether or not 1803 * user space I/O is required. If physio() is called, physio() eventually 1804 * calls wdioctlstrategy(). 1805 * 1806 * - In either case, wdioctlstrategy() calls wd->atabus->ata_exec_command() 1807 * to perform the actual command 1808 * 1809 * The reason for the use of the pseudo strategy routine is because 1810 * when doing I/O to/from user space, physio _really_ wants to be in 1811 * the loop. We could put the entire buffer into the ioctl request 1812 * structure, but that won't scale if we want to do things like download 1813 * microcode. 1814 */ 1815 1816 void 1817 wdioctlstrategy(struct buf *bp) 1818 { 1819 struct wd_ioctl *wi; 1820 struct wdc_command wdc_c; 1821 int error = 0; 1822 1823 wi = wi_find(bp); 1824 if (wi == NULL) { 1825 printf("user_strat: No ioctl\n"); 1826 error = EINVAL; 1827 goto bad; 1828 } 1829 1830 memset(&wdc_c, 0, sizeof(wdc_c)); 1831 1832 /* 1833 * Abort if physio broke up the transfer 1834 */ 1835 1836 if (bp->b_bcount != wi->wi_atareq.datalen) { 1837 printf("physio split wd ioctl request... cannot proceed\n"); 1838 error = EIO; 1839 goto bad; 1840 } 1841 1842 /* 1843 * Abort if we didn't get a buffer size that was a multiple of 1844 * our sector size (or was larger than NBBY) 1845 */ 1846 1847 if ((bp->b_bcount % wi->wi_softc->sc_dk.dk_label->d_secsize) != 0 || 1848 (bp->b_bcount / wi->wi_softc->sc_dk.dk_label->d_secsize) >= 1849 (1 << NBBY)) { 1850 error = EINVAL; 1851 goto bad; 1852 } 1853 1854 /* 1855 * Make sure a timeout was supplied in the ioctl request 1856 */ 1857 1858 if (wi->wi_atareq.timeout == 0) { 1859 error = EINVAL; 1860 goto bad; 1861 } 1862 1863 if (wi->wi_atareq.flags & ATACMD_READ) 1864 wdc_c.flags |= AT_READ; 1865 else if (wi->wi_atareq.flags & ATACMD_WRITE) 1866 wdc_c.flags |= AT_WRITE; 1867 1868 if (wi->wi_atareq.flags & ATACMD_READREG) 1869 wdc_c.flags |= AT_READREG; 1870 1871 wdc_c.flags |= AT_WAIT; 1872 1873 wdc_c.timeout = wi->wi_atareq.timeout; 1874 wdc_c.r_command = wi->wi_atareq.command; 1875 wdc_c.r_head = wi->wi_atareq.head & 0x0f; 1876 wdc_c.r_cyl = wi->wi_atareq.cylinder; 1877 wdc_c.r_sector = wi->wi_atareq.sec_num; 1878 wdc_c.r_count = wi->wi_atareq.sec_count; 1879 wdc_c.r_precomp = wi->wi_atareq.features; 1880 wdc_c.r_st_bmask = WDCS_DRDY; 1881 wdc_c.r_st_pmask = WDCS_DRDY; 1882 wdc_c.data = wi->wi_bp.b_data; 1883 wdc_c.bcount = wi->wi_bp.b_bcount; 1884 1885 if (wi->wi_softc->atabus->ata_exec_command(wi->wi_softc->drvp, &wdc_c) 1886 != WDC_COMPLETE) { 1887 wi->wi_atareq.retsts = ATACMD_ERROR; 1888 goto bad; 1889 } 1890 1891 if (wdc_c.flags & (AT_ERROR | AT_TIMEOU | AT_DF)) { 1892 if (wdc_c.flags & AT_ERROR) { 1893 wi->wi_atareq.retsts = ATACMD_ERROR; 1894 wi->wi_atareq.error = wdc_c.r_error; 1895 } else if (wdc_c.flags & AT_DF) 1896 wi->wi_atareq.retsts = ATACMD_DF; 1897 else 1898 wi->wi_atareq.retsts = ATACMD_TIMEOUT; 1899 } else { 1900 wi->wi_atareq.retsts = ATACMD_OK; 1901 if (wi->wi_atareq.flags & ATACMD_READREG) { 1902 wi->wi_atareq.head = wdc_c.r_head ; 1903 wi->wi_atareq.cylinder = wdc_c.r_cyl; 1904 wi->wi_atareq.sec_num = wdc_c.r_sector; 1905 wi->wi_atareq.sec_count = wdc_c.r_count; 1906 wi->wi_atareq.features = wdc_c.r_precomp; 1907 wi->wi_atareq.error = wdc_c.r_error; 1908 } 1909 } 1910 1911 bp->b_error = 0; 1912 biodone(bp); 1913 return; 1914 bad: 1915 bp->b_flags |= B_ERROR; 1916 bp->b_error = error; 1917 biodone(bp); 1918 }
Cache object: 52145a1fc5234995cd5a7ea98649e7f6
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