wd.c revision 1.258
1 /* $NetBSD: wd.c,v 1.258 2003/07/10 23:23:44 matt 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 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 1.258 2003/07/10 23:23:44 matt Exp $"); 70 71 #ifndef WDCDEBUG 72 #define WDCDEBUG 73 #endif /* WDCDEBUG */ 74 75 #include "opt_bufq.h" 76 #include "rnd.h" 77 78 #include <sys/param.h> 79 #include <sys/systm.h> 80 #include <sys/kernel.h> 81 #include <sys/conf.h> 82 #include <sys/file.h> 83 #include <sys/stat.h> 84 #include <sys/ioctl.h> 85 #include <sys/buf.h> 86 #include <sys/uio.h> 87 #include <sys/malloc.h> 88 #include <sys/device.h> 89 #include <sys/disklabel.h> 90 #include <sys/disk.h> 91 #include <sys/syslog.h> 92 #include <sys/proc.h> 93 #include <sys/vnode.h> 94 #if NRND > 0 95 #include <sys/rnd.h> 96 #endif 97 98 #include <machine/intr.h> 99 #include <machine/bus.h> 100 101 #define __ATA_DISK_PRIVATE 102 103 #include <dev/ata/atareg.h> 104 #include <dev/ata/atavar.h> 105 #include <dev/ata/wdvar.h> 106 #include <dev/ic/wdcreg.h> 107 #include <sys/ataio.h> 108 #include "locators.h" 109 110 #define LBA48_THRESHOLD (0xfffffff) /* 128GB / DEV_BSIZE */ 111 112 #define WDIORETRIES_SINGLE 4 /* number of retries before single-sector */ 113 #define WDIORETRIES 5 /* number of retries before giving up */ 114 #define RECOVERYTIME hz/2 /* time to wait before retrying a cmd */ 115 116 #define WDUNIT(dev) DISKUNIT(dev) 117 #define WDPART(dev) DISKPART(dev) 118 #define WDMINOR(unit, part) DISKMINOR(unit, part) 119 #define MAKEWDDEV(maj, unit, part) MAKEDISKDEV(maj, unit, part) 120 121 #define WDLABELDEV(dev) (MAKEWDDEV(major(dev), WDUNIT(dev), RAW_PART)) 122 123 #define DEBUG_INTR 0x01 124 #define DEBUG_XFERS 0x02 125 #define DEBUG_STATUS 0x04 126 #define DEBUG_FUNCS 0x08 127 #define DEBUG_PROBE 0x10 128 #ifdef WDCDEBUG 129 extern int wdcdebug_wd_mask; /* init'ed in ata_wdc.c */ 130 #define WDCDEBUG_PRINT(args, level) \ 131 if (wdcdebug_wd_mask & (level)) \ 132 printf args 133 #else 134 #define WDCDEBUG_PRINT(args, level) 135 #endif 136 137 int wdprobe __P((struct device *, struct cfdata *, void *)); 138 void wdattach __P((struct device *, struct device *, void *)); 139 int wddetach __P((struct device *, int)); 140 int wdactivate __P((struct device *, enum devact)); 141 int wdprint __P((void *, char *)); 142 void wdperror __P((const struct wd_softc *)); 143 144 CFATTACH_DECL(wd, sizeof(struct wd_softc), 145 wdprobe, wdattach, wddetach, wdactivate); 146 147 extern struct cfdriver wd_cd; 148 149 dev_type_open(wdopen); 150 dev_type_close(wdclose); 151 dev_type_read(wdread); 152 dev_type_write(wdwrite); 153 dev_type_ioctl(wdioctl); 154 dev_type_strategy(wdstrategy); 155 dev_type_dump(wddump); 156 dev_type_size(wdsize); 157 158 const struct bdevsw wd_bdevsw = { 159 wdopen, wdclose, wdstrategy, wdioctl, wddump, wdsize, D_DISK 160 }; 161 162 const struct cdevsw wd_cdevsw = { 163 wdopen, wdclose, wdread, wdwrite, wdioctl, 164 nostop, notty, nopoll, nommap, nokqfilter, D_DISK 165 }; 166 167 /* 168 * Glue necessary to hook WDCIOCCOMMAND into physio 169 */ 170 171 struct wd_ioctl { 172 LIST_ENTRY(wd_ioctl) wi_list; 173 struct buf wi_bp; 174 struct uio wi_uio; 175 struct iovec wi_iov; 176 atareq_t wi_atareq; 177 struct wd_softc *wi_softc; 178 }; 179 180 LIST_HEAD(, wd_ioctl) wi_head; 181 182 struct wd_ioctl *wi_find __P((struct buf *)); 183 void wi_free __P((struct wd_ioctl *)); 184 struct wd_ioctl *wi_get __P((void)); 185 void wdioctlstrategy __P((struct buf *)); 186 187 void wdgetdefaultlabel __P((struct wd_softc *, struct disklabel *)); 188 void wdgetdisklabel __P((struct wd_softc *)); 189 void wdstart __P((void *)); 190 void __wdstart __P((struct wd_softc*, struct buf *)); 191 void wdrestart __P((void*)); 192 int wd_get_params __P((struct wd_softc *, u_int8_t, struct ataparams *)); 193 void wd_flushcache __P((struct wd_softc *, int)); 194 void wd_shutdown __P((void*)); 195 196 int wd_getcache __P((struct wd_softc *, int *)); 197 int wd_setcache __P((struct wd_softc *, int)); 198 199 struct dkdriver wddkdriver = { wdstrategy }; 200 201 #ifdef HAS_BAD144_HANDLING 202 static void bad144intern __P((struct wd_softc *)); 203 #endif 204 int wdlock __P((struct wd_softc *)); 205 void wdunlock __P((struct wd_softc *)); 206 207 #define WD_QUIRK_SPLIT_MOD15_WRITE 0x0001 /* must split certain writes */ 208 209 /* 210 * Quirk table for IDE drives. Put more-specific matches first, since 211 * a simple globbing routine is used for matching. 212 */ 213 static const struct wd_quirk { 214 const char *wdq_match; /* inquiry pattern to match */ 215 int wdq_quirks; /* drive quirks */ 216 } wd_quirk_table[] = { 217 /* 218 * Some Seagate S-ATA drives have a PHY which can get confused 219 * with the way data is packetized by some S-ATA controllers. 220 * 221 * The work-around is to split in two any write transfer whose 222 * sector count % 15 == 1 (assuming 512 byte sectors). 223 * 224 * XXX This is an incomplete list. There are at least a couple 225 * XXX more model numbers. If you have trouble with such transfers 226 * XXX (8K is the most common) on Seagate S-ATA drives, please 227 * XXX notify thorpej (at) netbsd.org. 228 */ 229 { "ST3120023AS", 230 WD_QUIRK_SPLIT_MOD15_WRITE }, 231 { "ST380023AS", 232 WD_QUIRK_SPLIT_MOD15_WRITE }, 233 234 { NULL, 235 0 } 236 }; 237 238 static const struct wd_quirk * 239 wd_lookup_quirks(const char *name) 240 { 241 const struct wd_quirk *wdq; 242 const char *estr; 243 244 for (wdq = wd_quirk_table; wdq->wdq_match != NULL; wdq++) { 245 /* 246 * We only want exact matches (which include matches 247 * against globbing characters). 248 */ 249 if (pmatch(name, wdq->wdq_match, &estr) == 2) 250 return (wdq); 251 } 252 return (NULL); 253 } 254 255 int 256 wdprobe(parent, match, aux) 257 struct device *parent; 258 struct cfdata *match; 259 260 void *aux; 261 { 262 struct ata_device *adev = aux; 263 264 if (adev == NULL) 265 return 0; 266 if (adev->adev_bustype->bustype_type != SCSIPI_BUSTYPE_ATA) 267 return 0; 268 269 if (match->cf_loc[ATACF_CHANNEL] != ATACF_CHANNEL_DEFAULT && 270 match->cf_loc[ATACF_CHANNEL] != adev->adev_channel) 271 return 0; 272 273 if (match->cf_loc[ATACF_DRIVE] != ATACF_DRIVE_DEFAULT && 274 match->cf_loc[ATACF_DRIVE] != adev->adev_drv_data->drive) 275 return 0; 276 return 1; 277 } 278 279 void 280 wdattach(parent, self, aux) 281 struct device *parent, *self; 282 void *aux; 283 { 284 struct wd_softc *wd = (void *)self; 285 struct ata_device *adev= aux; 286 int i, blank; 287 char buf[41], pbuf[9], c, *p, *q; 288 const struct wd_quirk *wdq; 289 WDCDEBUG_PRINT(("wdattach\n"), DEBUG_FUNCS | DEBUG_PROBE); 290 291 callout_init(&wd->sc_restart_ch); 292 #ifdef NEW_BUFQ_STRATEGY 293 bufq_alloc(&wd->sc_q, BUFQ_READ_PRIO|BUFQ_SORT_RAWBLOCK); 294 #else 295 bufq_alloc(&wd->sc_q, BUFQ_DISKSORT|BUFQ_SORT_RAWBLOCK); 296 #endif 297 SLIST_INIT(&wd->sc_bslist); 298 299 wd->atabus = adev->adev_bustype; 300 wd->openings = adev->adev_openings; 301 wd->drvp = adev->adev_drv_data; 302 wd->wdc_softc = parent; 303 /* give back our softc to our caller */ 304 wd->drvp->drv_softc = &wd->sc_dev; 305 306 aprint_naive("\n"); 307 308 /* read our drive info */ 309 if (wd_get_params(wd, AT_POLL, &wd->sc_params) != 0) { 310 aprint_error("\n%s: IDENTIFY failed\n", wd->sc_dev.dv_xname); 311 return; 312 } 313 314 for (blank = 0, p = wd->sc_params.atap_model, q = buf, i = 0; 315 i < sizeof(wd->sc_params.atap_model); i++) { 316 c = *p++; 317 if (c == '\0') 318 break; 319 if (c != ' ') { 320 if (blank) { 321 *q++ = ' '; 322 blank = 0; 323 } 324 *q++ = c; 325 } else 326 blank = 1; 327 } 328 *q++ = '\0'; 329 330 aprint_normal(": <%s>\n", buf); 331 332 wdq = wd_lookup_quirks(buf); 333 if (wdq != NULL) 334 wd->sc_quirks = wdq->wdq_quirks; 335 336 if ((wd->sc_params.atap_multi & 0xff) > 1) { 337 wd->sc_multi = wd->sc_params.atap_multi & 0xff; 338 } else { 339 wd->sc_multi = 1; 340 } 341 342 aprint_normal("%s: drive supports %d-sector PIO transfers,", 343 wd->sc_dev.dv_xname, wd->sc_multi); 344 345 /* 48-bit LBA addressing */ 346 if ((wd->sc_params.atap_cmd2_en & WDC_CAP_LBA48) != 0) 347 wd->sc_flags |= WDF_LBA48; 348 349 /* Prior to ATA-4, LBA was optional. */ 350 if ((wd->sc_params.atap_capabilities1 & WDC_CAP_LBA) != 0) 351 wd->sc_flags |= WDF_LBA; 352 #if 0 353 /* ATA-4 requires LBA. */ 354 if (wd->sc_params.atap_ataversion != 0xffff && 355 wd->sc_params.atap_ataversion >= WDC_VER_ATA4) 356 wd->sc_flags |= WDF_LBA; 357 #endif 358 359 if ((wd->sc_flags & WDF_LBA48) != 0) { 360 aprint_normal(" LBA48 addressing\n"); 361 wd->sc_capacity = 362 ((u_int64_t) wd->sc_params.__reserved6[11] << 48) | 363 ((u_int64_t) wd->sc_params.__reserved6[10] << 32) | 364 ((u_int64_t) wd->sc_params.__reserved6[9] << 16) | 365 ((u_int64_t) wd->sc_params.__reserved6[8] << 0); 366 } else if ((wd->sc_flags & WDF_LBA) != 0) { 367 aprint_normal(" LBA addressing\n"); 368 wd->sc_capacity = 369 (wd->sc_params.atap_capacity[1] << 16) | 370 wd->sc_params.atap_capacity[0]; 371 } else { 372 aprint_normal(" chs addressing\n"); 373 wd->sc_capacity = 374 wd->sc_params.atap_cylinders * 375 wd->sc_params.atap_heads * 376 wd->sc_params.atap_sectors; 377 } 378 format_bytes(pbuf, sizeof(pbuf), wd->sc_capacity * DEV_BSIZE); 379 aprint_normal("%s: %s, %d cyl, %d head, %d sec, " 380 "%d bytes/sect x %llu sectors\n", 381 self->dv_xname, pbuf, 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(self, act) 407 struct device *self; 408 enum devact act; 409 { 410 int rv = 0; 411 412 switch (act) { 413 case DVACT_ACTIVATE: 414 rv = EOPNOTSUPP; 415 break; 416 417 case DVACT_DEACTIVATE: 418 /* 419 * Nothing to do; we key off the device's DVF_ACTIVATE. 420 */ 421 break; 422 } 423 return (rv); 424 } 425 426 int 427 wddetach(self, flags) 428 struct device *self; 429 int flags; 430 { 431 struct wd_softc *sc = (struct wd_softc *)self; 432 struct buf *bp; 433 int s, bmaj, cmaj, i, mn; 434 435 /* Clean out the bad sector list */ 436 while (!SLIST_EMPTY(&sc->sc_bslist)) { 437 void *head = SLIST_FIRST(&sc->sc_bslist); 438 SLIST_REMOVE_HEAD(&sc->sc_bslist, dbs_next); 439 free(head, M_TEMP); 440 } 441 sc->sc_bscount = 0; 442 443 /* locate the major number */ 444 bmaj = bdevsw_lookup_major(&wd_bdevsw); 445 cmaj = cdevsw_lookup_major(&wd_cdevsw); 446 447 s = splbio(); 448 449 /* Kill off any queued buffers. */ 450 while ((bp = BUFQ_GET(&sc->sc_q)) != NULL) { 451 bp->b_error = EIO; 452 bp->b_flags |= B_ERROR; 453 bp->b_resid = bp->b_bcount; 454 biodone(bp); 455 } 456 457 bufq_free(&sc->sc_q); 458 459 splx(s); 460 461 /* Nuke the vnodes for any open instances. */ 462 for (i = 0; i < MAXPARTITIONS; i++) { 463 mn = WDMINOR(self->dv_unit, i); 464 vdevgone(bmaj, mn, mn, VBLK); 465 vdevgone(cmaj, mn, mn, VCHR); 466 } 467 468 /* Detach disk. */ 469 disk_detach(&sc->sc_dk); 470 471 /* Get rid of the shutdown hook. */ 472 if (sc->sc_sdhook != NULL) 473 shutdownhook_disestablish(sc->sc_sdhook); 474 475 #if NRND > 0 476 /* Unhook the entropy source. */ 477 rnd_detach_source(&sc->rnd_source); 478 #endif 479 480 return (0); 481 } 482 483 /* 484 * Read/write routine for a buffer. Validates the arguments and schedules the 485 * transfer. Does not wait for the transfer to complete. 486 */ 487 void 488 wdstrategy(bp) 489 struct buf *bp; 490 { 491 struct wd_softc *wd = device_lookup(&wd_cd, WDUNIT(bp->b_dev)); 492 struct disklabel *lp = wd->sc_dk.dk_label; 493 daddr_t blkno; 494 int s; 495 496 WDCDEBUG_PRINT(("wdstrategy (%s)\n", wd->sc_dev.dv_xname), 497 DEBUG_XFERS); 498 499 /* Valid request? */ 500 if (bp->b_blkno < 0 || 501 (bp->b_bcount % lp->d_secsize) != 0 || 502 (bp->b_bcount / lp->d_secsize) >= (1 << NBBY)) { 503 bp->b_error = EINVAL; 504 goto bad; 505 } 506 507 /* If device invalidated (e.g. media change, door open), error. */ 508 if ((wd->sc_flags & WDF_LOADED) == 0) { 509 bp->b_error = EIO; 510 goto bad; 511 } 512 513 /* If it's a null transfer, return immediately. */ 514 if (bp->b_bcount == 0) 515 goto done; 516 517 /* 518 * Do bounds checking, adjust transfer. if error, process. 519 * If end of partition, just return. 520 */ 521 if (WDPART(bp->b_dev) == RAW_PART) { 522 if (bounds_check_with_mediasize(bp, DEV_BSIZE, 523 wd->sc_capacity) <= 0) 524 goto done; 525 } else { 526 if (bounds_check_with_label(&wd->sc_dk, bp, 527 (wd->sc_flags & (WDF_WLABEL|WDF_LABELLING)) != 0) <= 0) 528 goto done; 529 } 530 531 /* 532 * Now convert the block number to absolute and put it in 533 * terms of the device's logical block size. 534 */ 535 if (lp->d_secsize >= DEV_BSIZE) 536 blkno = bp->b_blkno / (lp->d_secsize / DEV_BSIZE); 537 else 538 blkno = bp->b_blkno * (DEV_BSIZE / lp->d_secsize); 539 540 if (WDPART(bp->b_dev) != RAW_PART) 541 blkno += lp->d_partitions[WDPART(bp->b_dev)].p_offset; 542 543 bp->b_rawblkno = blkno; 544 545 /* 546 * If the transfer about to be attempted contains only a block that 547 * is known to be bad then return an error for the transfer without 548 * even attempting to start a transfer up under the premis that we 549 * will just end up doing more retries for a transfer that will end 550 * up failing again. 551 * XXX:SMP - mutex required to protect with DIOCBSFLUSH 552 */ 553 if (__predict_false(!SLIST_EMPTY(&wd->sc_bslist))) { 554 struct disk_badsectors *dbs; 555 daddr_t maxblk = blkno + (bp->b_bcount / DEV_BSIZE) - 1; 556 557 SLIST_FOREACH(dbs, &wd->sc_bslist, dbs_next) 558 if ((dbs->dbs_min <= blkno && blkno <= dbs->dbs_max) || 559 (dbs->dbs_min <= maxblk && maxblk <= dbs->dbs_max)){ 560 bp->b_error = EIO; 561 goto bad; 562 } 563 } 564 565 /* Queue transfer on drive, activate drive and controller if idle. */ 566 s = splbio(); 567 BUFQ_PUT(&wd->sc_q, bp); 568 wdstart(wd); 569 splx(s); 570 return; 571 bad: 572 bp->b_flags |= B_ERROR; 573 done: 574 /* Toss transfer; we're done early. */ 575 bp->b_resid = bp->b_bcount; 576 biodone(bp); 577 } 578 579 /* 580 * Queue a drive for I/O. 581 */ 582 void 583 wdstart(arg) 584 void *arg; 585 { 586 struct wd_softc *wd = arg; 587 struct buf *bp = NULL; 588 589 WDCDEBUG_PRINT(("wdstart %s\n", wd->sc_dev.dv_xname), 590 DEBUG_XFERS); 591 while (wd->openings > 0) { 592 593 /* Is there a buf for us ? */ 594 if ((bp = BUFQ_GET(&wd->sc_q)) == NULL) 595 return; 596 597 /* 598 * Make the command. First lock the device 599 */ 600 wd->openings--; 601 602 wd->retries = 0; 603 __wdstart(wd, bp); 604 } 605 } 606 607 static void 608 wd_split_mod15_write(struct buf *bp) 609 { 610 struct buf *obp = bp->b_private; 611 struct wd_softc *sc = wd_cd.cd_devs[DISKUNIT(obp->b_dev)]; 612 613 if (__predict_false(bp->b_flags & B_ERROR) != 0) { 614 /* 615 * Propagate the error. If this was the first half of 616 * the original transfer, make sure to account for that 617 * in the residual. 618 */ 619 if (bp->b_data == obp->b_data) 620 bp->b_resid += bp->b_bcount; 621 goto done; 622 } 623 624 /* 625 * If this was the second half of the transfer, we're all done! 626 */ 627 if (bp->b_data != obp->b_data) 628 goto done; 629 630 /* 631 * Advance the pointer to the second half and issue that command 632 * using the same opening. 633 */ 634 bp->b_flags = obp->b_flags | B_CALL; 635 bp->b_data += bp->b_bcount; 636 bp->b_blkno += (bp->b_bcount / 512); 637 bp->b_rawblkno += (bp->b_bcount / 512); 638 __wdstart(sc, bp); 639 return; 640 641 done: 642 obp->b_flags |= (bp->b_flags & (B_EINTR|B_ERROR)); 643 obp->b_error = bp->b_error; 644 obp->b_resid = bp->b_resid; 645 pool_put(&bufpool, bp); 646 biodone(obp); 647 sc->openings++; 648 /* wddone() will call wdstart() */ 649 } 650 651 void 652 __wdstart(wd, bp) 653 struct wd_softc *wd; 654 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 bp = nbp; 702 } 703 704 wd->sc_wdc_bio.blkno = bp->b_rawblkno; 705 wd->sc_wdc_bio.blkdone =0; 706 wd->sc_bp = bp; 707 /* 708 * If we're retrying, retry in single-sector mode. This will give us 709 * the sector number of the problem, and will eventually allow the 710 * transfer to succeed. 711 */ 712 if (wd->sc_multi == 1 || wd->retries >= WDIORETRIES_SINGLE) 713 wd->sc_wdc_bio.flags = ATA_SINGLE; 714 else 715 wd->sc_wdc_bio.flags = 0; 716 if (wd->sc_flags & WDF_LBA48 && wd->sc_wdc_bio.blkno > LBA48_THRESHOLD) 717 wd->sc_wdc_bio.flags |= ATA_LBA48; 718 if (wd->sc_flags & WDF_LBA) 719 wd->sc_wdc_bio.flags |= ATA_LBA; 720 if (bp->b_flags & B_READ) 721 wd->sc_wdc_bio.flags |= ATA_READ; 722 wd->sc_wdc_bio.bcount = bp->b_bcount; 723 wd->sc_wdc_bio.databuf = bp->b_data; 724 /* Instrumentation. */ 725 disk_busy(&wd->sc_dk); 726 switch (wd->atabus->ata_bio(wd->drvp, &wd->sc_wdc_bio)) { 727 case WDC_TRY_AGAIN: 728 callout_reset(&wd->sc_restart_ch, hz, wdrestart, wd); 729 break; 730 case WDC_QUEUED: 731 case WDC_COMPLETE: 732 break; 733 default: 734 panic("__wdstart: bad return code from ata_bio()"); 735 } 736 } 737 738 void 739 wddone(v) 740 void *v; 741 { 742 struct wd_softc *wd = v; 743 struct buf *bp = wd->sc_bp; 744 const char *errmsg; 745 int do_perror = 0; 746 WDCDEBUG_PRINT(("wddone %s\n", wd->sc_dev.dv_xname), 747 DEBUG_XFERS); 748 749 if (bp == NULL) 750 return; 751 bp->b_resid = wd->sc_wdc_bio.bcount; 752 switch (wd->sc_wdc_bio.error) { 753 case ERR_DMA: 754 errmsg = "DMA error"; 755 goto retry; 756 case ERR_DF: 757 errmsg = "device fault"; 758 goto retry; 759 case TIMEOUT: 760 errmsg = "device timeout"; 761 goto retry; 762 case ERROR: 763 /* Don't care about media change bits */ 764 if (wd->sc_wdc_bio.r_error != 0 && 765 (wd->sc_wdc_bio.r_error & ~(WDCE_MC | WDCE_MCR)) == 0) 766 goto noerror; 767 errmsg = "error"; 768 do_perror = 1; 769 retry: /* Just reset and retry. Can we do more ? */ 770 wd->atabus->ata_reset_channel(wd->drvp); 771 diskerr(bp, "wd", errmsg, LOG_PRINTF, 772 wd->sc_wdc_bio.blkdone, wd->sc_dk.dk_label); 773 if (wd->retries < WDIORETRIES) 774 printf(", retrying\n"); 775 if (do_perror) 776 wdperror(wd); 777 if (wd->retries < WDIORETRIES) { 778 wd->retries++; 779 callout_reset(&wd->sc_restart_ch, RECOVERYTIME, 780 wdrestart, wd); 781 return; 782 } 783 printf("\n"); 784 785 /* 786 * Not all errors indicate a failed block but those that do, 787 * put the block on the bad-block list for the device. Only 788 * do this for reads because the drive should do it for writes, 789 * itself, according to Manuel. 790 */ 791 if ((bp->b_flags & B_READ) && 792 ((wd->drvp->ata_vers >= 4 && wd->sc_wdc_bio.r_error & 64) || 793 (wd->drvp->ata_vers < 4 && wd->sc_wdc_bio.r_error & 192))) { 794 struct disk_badsectors *dbs; 795 796 dbs = malloc(sizeof *dbs, M_TEMP, M_WAITOK); 797 dbs->dbs_min = bp->b_rawblkno; 798 dbs->dbs_max = dbs->dbs_min + bp->b_bcount - 1; 799 microtime(&dbs->dbs_failedat); 800 SLIST_INSERT_HEAD(&wd->sc_bslist, dbs, dbs_next); 801 wd->sc_bscount++; 802 } 803 804 bp->b_flags |= B_ERROR; 805 bp->b_error = EIO; 806 break; 807 case NOERROR: 808 noerror: if ((wd->sc_wdc_bio.flags & ATA_CORR) || wd->retries > 0) 809 printf("%s: soft error (corrected)\n", 810 wd->sc_dev.dv_xname); 811 break; 812 case ERR_NODEV: 813 bp->b_flags |= B_ERROR; 814 bp->b_error = EIO; 815 break; 816 } 817 disk_unbusy(&wd->sc_dk, (bp->b_bcount - bp->b_resid), 818 (bp->b_flags & B_READ)); 819 #if NRND > 0 820 rnd_add_uint32(&wd->rnd_source, bp->b_blkno); 821 #endif 822 /* XXX Yuck, but we don't want to increment openings in this case */ 823 if (__predict_false((bp->b_flags & B_CALL) != 0 && 824 bp->b_iodone == wd_split_mod15_write)) 825 biodone(bp); 826 else { 827 biodone(bp); 828 wd->openings++; 829 } 830 wdstart(wd); 831 } 832 833 void 834 wdrestart(v) 835 void *v; 836 { 837 struct wd_softc *wd = v; 838 struct buf *bp = wd->sc_bp; 839 int s; 840 WDCDEBUG_PRINT(("wdrestart %s\n", wd->sc_dev.dv_xname), 841 DEBUG_XFERS); 842 843 s = splbio(); 844 __wdstart(v, bp); 845 splx(s); 846 } 847 848 int 849 wdread(dev, uio, flags) 850 dev_t dev; 851 struct uio *uio; 852 int flags; 853 { 854 855 WDCDEBUG_PRINT(("wdread\n"), DEBUG_XFERS); 856 return (physio(wdstrategy, NULL, dev, B_READ, minphys, uio)); 857 } 858 859 int 860 wdwrite(dev, uio, flags) 861 dev_t dev; 862 struct uio *uio; 863 int flags; 864 { 865 866 WDCDEBUG_PRINT(("wdwrite\n"), DEBUG_XFERS); 867 return (physio(wdstrategy, NULL, dev, B_WRITE, minphys, uio)); 868 } 869 870 /* 871 * Wait interruptibly for an exclusive lock. 872 * 873 * XXX 874 * Several drivers do this; it should be abstracted and made MP-safe. 875 */ 876 int 877 wdlock(wd) 878 struct wd_softc *wd; 879 { 880 int error; 881 int s; 882 883 WDCDEBUG_PRINT(("wdlock\n"), DEBUG_FUNCS); 884 885 s = splbio(); 886 887 while ((wd->sc_flags & WDF_LOCKED) != 0) { 888 wd->sc_flags |= WDF_WANTED; 889 if ((error = tsleep(wd, PRIBIO | PCATCH, 890 "wdlck", 0)) != 0) { 891 splx(s); 892 return error; 893 } 894 } 895 wd->sc_flags |= WDF_LOCKED; 896 splx(s); 897 return 0; 898 } 899 900 /* 901 * Unlock and wake up any waiters. 902 */ 903 void 904 wdunlock(wd) 905 struct wd_softc *wd; 906 { 907 908 WDCDEBUG_PRINT(("wdunlock\n"), DEBUG_FUNCS); 909 910 wd->sc_flags &= ~WDF_LOCKED; 911 if ((wd->sc_flags & WDF_WANTED) != 0) { 912 wd->sc_flags &= ~WDF_WANTED; 913 wakeup(wd); 914 } 915 } 916 917 int 918 wdopen(dev, flag, fmt, p) 919 dev_t dev; 920 int flag, fmt; 921 struct proc *p; 922 { 923 struct wd_softc *wd; 924 int part, error; 925 926 WDCDEBUG_PRINT(("wdopen\n"), DEBUG_FUNCS); 927 wd = device_lookup(&wd_cd, WDUNIT(dev)); 928 if (wd == NULL) 929 return (ENXIO); 930 931 /* 932 * If this is the first open of this device, add a reference 933 * to the adapter. 934 */ 935 if (wd->sc_dk.dk_openmask == 0 && 936 (error = wd->atabus->ata_addref(wd->drvp)) != 0) 937 return (error); 938 939 if ((error = wdlock(wd)) != 0) 940 goto bad4; 941 942 if (wd->sc_dk.dk_openmask != 0) { 943 /* 944 * If any partition is open, but the disk has been invalidated, 945 * disallow further opens. 946 */ 947 if ((wd->sc_flags & WDF_LOADED) == 0) { 948 error = EIO; 949 goto bad3; 950 } 951 } else { 952 if ((wd->sc_flags & WDF_LOADED) == 0) { 953 wd->sc_flags |= WDF_LOADED; 954 955 /* Load the physical device parameters. */ 956 wd_get_params(wd, AT_WAIT, &wd->sc_params); 957 958 /* Load the partition info if not already loaded. */ 959 wdgetdisklabel(wd); 960 } 961 } 962 963 part = WDPART(dev); 964 965 /* Check that the partition exists. */ 966 if (part != RAW_PART && 967 (part >= wd->sc_dk.dk_label->d_npartitions || 968 wd->sc_dk.dk_label->d_partitions[part].p_fstype == FS_UNUSED)) { 969 error = ENXIO; 970 goto bad; 971 } 972 973 /* Insure only one open at a time. */ 974 switch (fmt) { 975 case S_IFCHR: 976 wd->sc_dk.dk_copenmask |= (1 << part); 977 break; 978 case S_IFBLK: 979 wd->sc_dk.dk_bopenmask |= (1 << part); 980 break; 981 } 982 wd->sc_dk.dk_openmask = 983 wd->sc_dk.dk_copenmask | wd->sc_dk.dk_bopenmask; 984 985 wdunlock(wd); 986 return 0; 987 988 bad: 989 if (wd->sc_dk.dk_openmask == 0) { 990 } 991 992 bad3: 993 wdunlock(wd); 994 bad4: 995 if (wd->sc_dk.dk_openmask == 0) 996 wd->atabus->ata_delref(wd->drvp); 997 return error; 998 } 999 1000 int 1001 wdclose(dev, flag, fmt, p) 1002 dev_t dev; 1003 int flag, fmt; 1004 struct proc *p; 1005 { 1006 struct wd_softc *wd = device_lookup(&wd_cd, WDUNIT(dev)); 1007 int part = WDPART(dev); 1008 int error; 1009 1010 WDCDEBUG_PRINT(("wdclose\n"), DEBUG_FUNCS); 1011 if ((error = wdlock(wd)) != 0) 1012 return error; 1013 1014 switch (fmt) { 1015 case S_IFCHR: 1016 wd->sc_dk.dk_copenmask &= ~(1 << part); 1017 break; 1018 case S_IFBLK: 1019 wd->sc_dk.dk_bopenmask &= ~(1 << part); 1020 break; 1021 } 1022 wd->sc_dk.dk_openmask = 1023 wd->sc_dk.dk_copenmask | wd->sc_dk.dk_bopenmask; 1024 1025 if (wd->sc_dk.dk_openmask == 0) { 1026 wd_flushcache(wd, AT_WAIT); 1027 /* XXXX Must wait for I/O to complete! */ 1028 1029 if (! (wd->sc_flags & WDF_KLABEL)) 1030 wd->sc_flags &= ~WDF_LOADED; 1031 1032 wd->atabus->ata_delref(wd->drvp); 1033 } 1034 1035 wdunlock(wd); 1036 return 0; 1037 } 1038 1039 void 1040 wdgetdefaultlabel(wd, lp) 1041 struct wd_softc *wd; 1042 struct disklabel *lp; 1043 { 1044 1045 WDCDEBUG_PRINT(("wdgetdefaultlabel\n"), DEBUG_FUNCS); 1046 memset(lp, 0, sizeof(struct disklabel)); 1047 1048 lp->d_secsize = DEV_BSIZE; 1049 lp->d_ntracks = wd->sc_params.atap_heads; 1050 lp->d_nsectors = wd->sc_params.atap_sectors; 1051 lp->d_ncylinders = wd->sc_params.atap_cylinders; 1052 lp->d_secpercyl = lp->d_ntracks * lp->d_nsectors; 1053 1054 if (strcmp(wd->sc_params.atap_model, "ST506") == 0) 1055 lp->d_type = DTYPE_ST506; 1056 else 1057 lp->d_type = DTYPE_ESDI; 1058 1059 strncpy(lp->d_typename, wd->sc_params.atap_model, 16); 1060 strncpy(lp->d_packname, "fictitious", 16); 1061 if (wd->sc_capacity > UINT32_MAX) 1062 lp->d_secperunit = UINT32_MAX; 1063 else 1064 lp->d_secperunit = wd->sc_capacity; 1065 lp->d_rpm = 3600; 1066 lp->d_interleave = 1; 1067 lp->d_flags = 0; 1068 1069 lp->d_partitions[RAW_PART].p_offset = 0; 1070 lp->d_partitions[RAW_PART].p_size = 1071 lp->d_secperunit * (lp->d_secsize / DEV_BSIZE); 1072 lp->d_partitions[RAW_PART].p_fstype = FS_UNUSED; 1073 lp->d_npartitions = RAW_PART + 1; 1074 1075 lp->d_magic = DISKMAGIC; 1076 lp->d_magic2 = DISKMAGIC; 1077 lp->d_checksum = dkcksum(lp); 1078 } 1079 1080 /* 1081 * Fabricate a default disk label, and try to read the correct one. 1082 */ 1083 void 1084 wdgetdisklabel(wd) 1085 struct wd_softc *wd; 1086 { 1087 struct disklabel *lp = wd->sc_dk.dk_label; 1088 const char *errstring; 1089 1090 WDCDEBUG_PRINT(("wdgetdisklabel\n"), DEBUG_FUNCS); 1091 1092 memset(wd->sc_dk.dk_cpulabel, 0, sizeof(struct cpu_disklabel)); 1093 1094 wdgetdefaultlabel(wd, lp); 1095 1096 wd->sc_badsect[0] = -1; 1097 1098 if (wd->drvp->state > RECAL) 1099 wd->drvp->drive_flags |= DRIVE_RESET; 1100 errstring = readdisklabel(MAKEWDDEV(0, wd->sc_dev.dv_unit, RAW_PART), 1101 wdstrategy, lp, wd->sc_dk.dk_cpulabel); 1102 if (errstring) { 1103 /* 1104 * This probably happened because the drive's default 1105 * geometry doesn't match the DOS geometry. We 1106 * assume the DOS geometry is now in the label and try 1107 * again. XXX This is a kluge. 1108 */ 1109 if (wd->drvp->state > RECAL) 1110 wd->drvp->drive_flags |= DRIVE_RESET; 1111 errstring = readdisklabel(MAKEWDDEV(0, wd->sc_dev.dv_unit, 1112 RAW_PART), wdstrategy, lp, wd->sc_dk.dk_cpulabel); 1113 } 1114 if (errstring) { 1115 printf("%s: %s\n", wd->sc_dev.dv_xname, errstring); 1116 return; 1117 } 1118 1119 if (wd->drvp->state > RECAL) 1120 wd->drvp->drive_flags |= DRIVE_RESET; 1121 #ifdef HAS_BAD144_HANDLING 1122 if ((lp->d_flags & D_BADSECT) != 0) 1123 bad144intern(wd); 1124 #endif 1125 } 1126 1127 void 1128 wdperror(wd) 1129 const struct wd_softc *wd; 1130 { 1131 static const char *const errstr0_3[] = {"address mark not found", 1132 "track 0 not found", "aborted command", "media change requested", 1133 "id not found", "media changed", "uncorrectable data error", 1134 "bad block detected"}; 1135 static const char *const errstr4_5[] = { 1136 "obsolete (address mark not found)", 1137 "no media/write protected", "aborted command", 1138 "media change requested", "id not found", "media changed", 1139 "uncorrectable data error", "interface CRC error"}; 1140 const char *const *errstr; 1141 int i; 1142 char *sep = ""; 1143 1144 const char *devname = wd->sc_dev.dv_xname; 1145 struct ata_drive_datas *drvp = wd->drvp; 1146 int errno = wd->sc_wdc_bio.r_error; 1147 1148 if (drvp->ata_vers >= 4) 1149 errstr = errstr4_5; 1150 else 1151 errstr = errstr0_3; 1152 1153 printf("%s: (", devname); 1154 1155 if (errno == 0) 1156 printf("error not notified"); 1157 1158 for (i = 0; i < 8; i++) { 1159 if (errno & (1 << i)) { 1160 printf("%s%s", sep, errstr[i]); 1161 sep = ", "; 1162 } 1163 } 1164 printf(")\n"); 1165 } 1166 1167 int 1168 wdioctl(dev, xfer, addr, flag, p) 1169 dev_t dev; 1170 u_long xfer; 1171 caddr_t addr; 1172 int flag; 1173 struct proc *p; 1174 { 1175 struct wd_softc *wd = device_lookup(&wd_cd, WDUNIT(dev)); 1176 int error = 0; 1177 #ifdef __HAVE_OLD_DISKLABEL 1178 struct disklabel *newlabel = NULL; 1179 #endif 1180 1181 WDCDEBUG_PRINT(("wdioctl\n"), DEBUG_FUNCS); 1182 1183 if ((wd->sc_flags & WDF_LOADED) == 0) 1184 return EIO; 1185 1186 switch (xfer) { 1187 #ifdef HAS_BAD144_HANDLING 1188 case DIOCSBAD: 1189 if ((flag & FWRITE) == 0) 1190 return EBADF; 1191 wd->sc_dk.dk_cpulabel->bad = *(struct dkbad *)addr; 1192 wd->sc_dk.dk_label->d_flags |= D_BADSECT; 1193 bad144intern(wd); 1194 return 0; 1195 #endif 1196 1197 case DIOCBSLIST : 1198 { 1199 u_int32_t count, missing, skip; 1200 struct disk_badsecinfo dbsi; 1201 struct disk_badsectors *dbs; 1202 size_t available; 1203 caddr_t laddr; 1204 1205 dbsi = *(struct disk_badsecinfo *)addr; 1206 missing = wd->sc_bscount; 1207 count = 0; 1208 available = dbsi.dbsi_bufsize; 1209 skip = dbsi.dbsi_skip; 1210 laddr = dbsi.dbsi_buffer; 1211 1212 /* 1213 * We start this loop with the expectation that all of the 1214 * entries will be missed and decrement this counter each 1215 * time we either skip over one (already copied out) or 1216 * we actually copy it back to user space. The structs 1217 * holding the bad sector information are copied directly 1218 * back to user space whilst the summary is returned via 1219 * the struct passed in via the ioctl. 1220 */ 1221 SLIST_FOREACH(dbs, &wd->sc_bslist, dbs_next) { 1222 if (skip > 0) { 1223 missing--; 1224 skip--; 1225 continue; 1226 } 1227 if (available < sizeof(*dbs)) 1228 break; 1229 available -= sizeof(*dbs); 1230 copyout(dbs, laddr, sizeof(*dbs)); 1231 laddr += sizeof(*dbs); 1232 missing--; 1233 count++; 1234 } 1235 dbsi.dbsi_left = missing; 1236 dbsi.dbsi_copied = count; 1237 *(struct disk_badsecinfo *)addr = dbsi; 1238 return 0; 1239 } 1240 1241 case DIOCBSFLUSH : 1242 /* Clean out the bad sector list */ 1243 while (!SLIST_EMPTY(&wd->sc_bslist)) { 1244 void *head = SLIST_FIRST(&wd->sc_bslist); 1245 SLIST_REMOVE_HEAD(&wd->sc_bslist, dbs_next); 1246 free(head, M_TEMP); 1247 } 1248 wd->sc_bscount = 0; 1249 return 0; 1250 1251 case DIOCGDINFO: 1252 *(struct disklabel *)addr = *(wd->sc_dk.dk_label); 1253 return 0; 1254 #ifdef __HAVE_OLD_DISKLABEL 1255 case ODIOCGDINFO: 1256 newlabel = malloc(sizeof *newlabel, M_TEMP, M_WAITOK); 1257 if (newlabel == NULL) 1258 return EIO; 1259 *newlabel = *(wd->sc_dk.dk_label); 1260 if (newlabel->d_npartitions <= OLDMAXPARTITIONS) 1261 memcpy(addr, newlabel, sizeof (struct olddisklabel)); 1262 else 1263 error = ENOTTY; 1264 free(newlabel, M_TEMP); 1265 return error; 1266 #endif 1267 1268 case DIOCGPART: 1269 ((struct partinfo *)addr)->disklab = wd->sc_dk.dk_label; 1270 ((struct partinfo *)addr)->part = 1271 &wd->sc_dk.dk_label->d_partitions[WDPART(dev)]; 1272 return 0; 1273 1274 case DIOCWDINFO: 1275 case DIOCSDINFO: 1276 #ifdef __HAVE_OLD_DISKLABEL 1277 case ODIOCWDINFO: 1278 case ODIOCSDINFO: 1279 #endif 1280 { 1281 struct disklabel *lp; 1282 1283 if ((flag & FWRITE) == 0) 1284 return EBADF; 1285 1286 #ifdef __HAVE_OLD_DISKLABEL 1287 if (xfer == ODIOCSDINFO || xfer == ODIOCWDINFO) { 1288 newlabel = malloc(sizeof *newlabel, M_TEMP, M_WAITOK); 1289 if (newlabel == NULL) 1290 return EIO; 1291 memset(newlabel, 0, sizeof newlabel); 1292 memcpy(newlabel, addr, sizeof (struct olddisklabel)); 1293 lp = newlabel; 1294 } else 1295 #endif 1296 lp = (struct disklabel *)addr; 1297 1298 if ((error = wdlock(wd)) != 0) 1299 goto bad; 1300 wd->sc_flags |= WDF_LABELLING; 1301 1302 error = setdisklabel(wd->sc_dk.dk_label, 1303 lp, /*wd->sc_dk.dk_openmask : */0, 1304 wd->sc_dk.dk_cpulabel); 1305 if (error == 0) { 1306 if (wd->drvp->state > RECAL) 1307 wd->drvp->drive_flags |= DRIVE_RESET; 1308 if (xfer == DIOCWDINFO 1309 #ifdef __HAVE_OLD_DISKLABEL 1310 || xfer == ODIOCWDINFO 1311 #endif 1312 ) 1313 error = writedisklabel(WDLABELDEV(dev), 1314 wdstrategy, wd->sc_dk.dk_label, 1315 wd->sc_dk.dk_cpulabel); 1316 } 1317 1318 wd->sc_flags &= ~WDF_LABELLING; 1319 wdunlock(wd); 1320 bad: 1321 #ifdef __HAVE_OLD_DISKLABEL 1322 if (newlabel != NULL) 1323 free(newlabel, M_TEMP); 1324 #endif 1325 return error; 1326 } 1327 1328 case DIOCKLABEL: 1329 if (*(int *)addr) 1330 wd->sc_flags |= WDF_KLABEL; 1331 else 1332 wd->sc_flags &= ~WDF_KLABEL; 1333 return 0; 1334 1335 case DIOCWLABEL: 1336 if ((flag & FWRITE) == 0) 1337 return EBADF; 1338 if (*(int *)addr) 1339 wd->sc_flags |= WDF_WLABEL; 1340 else 1341 wd->sc_flags &= ~WDF_WLABEL; 1342 return 0; 1343 1344 case DIOCGDEFLABEL: 1345 wdgetdefaultlabel(wd, (struct disklabel *)addr); 1346 return 0; 1347 #ifdef __HAVE_OLD_DISKLABEL 1348 case ODIOCGDEFLABEL: 1349 newlabel = malloc(sizeof *newlabel, M_TEMP, M_WAITOK); 1350 if (newlabel == NULL) 1351 return EIO; 1352 wdgetdefaultlabel(wd, newlabel); 1353 if (newlabel->d_npartitions <= OLDMAXPARTITIONS) 1354 memcpy(addr, &newlabel, sizeof (struct olddisklabel)); 1355 else 1356 error = ENOTTY; 1357 free(newlabel, M_TEMP); 1358 return error; 1359 #endif 1360 1361 #ifdef notyet 1362 case DIOCWFORMAT: 1363 if ((flag & FWRITE) == 0) 1364 return EBADF; 1365 { 1366 register struct format_op *fop; 1367 struct iovec aiov; 1368 struct uio auio; 1369 1370 fop = (struct format_op *)addr; 1371 aiov.iov_base = fop->df_buf; 1372 aiov.iov_len = fop->df_count; 1373 auio.uio_iov = &aiov; 1374 auio.uio_iovcnt = 1; 1375 auio.uio_resid = fop->df_count; 1376 auio.uio_segflg = 0; 1377 auio.uio_offset = 1378 fop->df_startblk * wd->sc_dk.dk_label->d_secsize; 1379 auio.uio_procp = p; 1380 error = physio(wdformat, NULL, dev, B_WRITE, minphys, 1381 &auio); 1382 fop->df_count -= auio.uio_resid; 1383 fop->df_reg[0] = wdc->sc_status; 1384 fop->df_reg[1] = wdc->sc_error; 1385 return error; 1386 } 1387 #endif 1388 case DIOCGCACHE: 1389 return wd_getcache(wd, (int *)addr); 1390 1391 case DIOCSCACHE: 1392 return wd_setcache(wd, *(int *)addr); 1393 1394 case ATAIOCCOMMAND: 1395 /* 1396 * Make sure this command is (relatively) safe first 1397 */ 1398 if ((((atareq_t *) addr)->flags & ATACMD_READ) == 0 && 1399 (flag & FWRITE) == 0) 1400 return (EBADF); 1401 { 1402 struct wd_ioctl *wi; 1403 atareq_t *atareq = (atareq_t *) addr; 1404 int error; 1405 1406 wi = wi_get(); 1407 wi->wi_softc = wd; 1408 wi->wi_atareq = *atareq; 1409 1410 if (atareq->datalen && atareq->flags & 1411 (ATACMD_READ | ATACMD_WRITE)) { 1412 wi->wi_iov.iov_base = atareq->databuf; 1413 wi->wi_iov.iov_len = atareq->datalen; 1414 wi->wi_uio.uio_iov = &wi->wi_iov; 1415 wi->wi_uio.uio_iovcnt = 1; 1416 wi->wi_uio.uio_resid = atareq->datalen; 1417 wi->wi_uio.uio_offset = 0; 1418 wi->wi_uio.uio_segflg = UIO_USERSPACE; 1419 wi->wi_uio.uio_rw = 1420 (atareq->flags & ATACMD_READ) ? B_READ : B_WRITE; 1421 wi->wi_uio.uio_procp = p; 1422 error = physio(wdioctlstrategy, &wi->wi_bp, dev, 1423 (atareq->flags & ATACMD_READ) ? B_READ : B_WRITE, 1424 minphys, &wi->wi_uio); 1425 } else { 1426 /* No need to call physio if we don't have any 1427 user data */ 1428 wi->wi_bp.b_flags = 0; 1429 wi->wi_bp.b_data = 0; 1430 wi->wi_bp.b_bcount = 0; 1431 wi->wi_bp.b_dev = 0; 1432 wi->wi_bp.b_proc = p; 1433 wdioctlstrategy(&wi->wi_bp); 1434 error = wi->wi_bp.b_error; 1435 } 1436 *atareq = wi->wi_atareq; 1437 wi_free(wi); 1438 return(error); 1439 } 1440 1441 default: 1442 return ENOTTY; 1443 } 1444 1445 #ifdef DIAGNOSTIC 1446 panic("wdioctl: impossible"); 1447 #endif 1448 } 1449 1450 #ifdef B_FORMAT 1451 int 1452 wdformat(struct buf *bp) 1453 { 1454 1455 bp->b_flags |= B_FORMAT; 1456 return wdstrategy(bp); 1457 } 1458 #endif 1459 1460 int 1461 wdsize(dev) 1462 dev_t dev; 1463 { 1464 struct wd_softc *wd; 1465 int part, omask; 1466 int size; 1467 1468 WDCDEBUG_PRINT(("wdsize\n"), DEBUG_FUNCS); 1469 1470 wd = device_lookup(&wd_cd, WDUNIT(dev)); 1471 if (wd == NULL) 1472 return (-1); 1473 1474 part = WDPART(dev); 1475 omask = wd->sc_dk.dk_openmask & (1 << part); 1476 1477 if (omask == 0 && wdopen(dev, 0, S_IFBLK, NULL) != 0) 1478 return (-1); 1479 if (wd->sc_dk.dk_label->d_partitions[part].p_fstype != FS_SWAP) 1480 size = -1; 1481 else 1482 size = wd->sc_dk.dk_label->d_partitions[part].p_size * 1483 (wd->sc_dk.dk_label->d_secsize / DEV_BSIZE); 1484 if (omask == 0 && wdclose(dev, 0, S_IFBLK, NULL) != 0) 1485 return (-1); 1486 return (size); 1487 } 1488 1489 /* #define WD_DUMP_NOT_TRUSTED if you just want to watch */ 1490 static int wddoingadump = 0; 1491 static int wddumprecalibrated = 0; 1492 static int wddumpmulti = 1; 1493 1494 /* 1495 * Dump core after a system crash. 1496 */ 1497 int 1498 wddump(dev, blkno, va, size) 1499 dev_t dev; 1500 daddr_t blkno; 1501 caddr_t va; 1502 size_t size; 1503 { 1504 struct wd_softc *wd; /* disk unit to do the I/O */ 1505 struct disklabel *lp; /* disk's disklabel */ 1506 int part, err; 1507 int nblks; /* total number of sectors left to write */ 1508 1509 /* Check if recursive dump; if so, punt. */ 1510 if (wddoingadump) 1511 return EFAULT; 1512 wddoingadump = 1; 1513 1514 wd = device_lookup(&wd_cd, WDUNIT(dev)); 1515 if (wd == NULL) 1516 return (ENXIO); 1517 1518 part = WDPART(dev); 1519 1520 /* Convert to disk sectors. Request must be a multiple of size. */ 1521 lp = wd->sc_dk.dk_label; 1522 if ((size % lp->d_secsize) != 0) 1523 return EFAULT; 1524 nblks = size / lp->d_secsize; 1525 blkno = blkno / (lp->d_secsize / DEV_BSIZE); 1526 1527 /* Check transfer bounds against partition size. */ 1528 if ((blkno < 0) || ((blkno + nblks) > lp->d_partitions[part].p_size)) 1529 return EINVAL; 1530 1531 /* Offset block number to start of partition. */ 1532 blkno += lp->d_partitions[part].p_offset; 1533 1534 /* Recalibrate, if first dump transfer. */ 1535 if (wddumprecalibrated == 0) { 1536 wddumpmulti = wd->sc_multi; 1537 wddumprecalibrated = 1; 1538 wd->drvp->state = RESET; 1539 } 1540 1541 while (nblks > 0) { 1542 again: 1543 wd->sc_bp = NULL; 1544 wd->sc_wdc_bio.blkno = blkno; 1545 wd->sc_wdc_bio.flags = ATA_POLL; 1546 if (wddumpmulti == 1) 1547 wd->sc_wdc_bio.flags |= ATA_SINGLE; 1548 if (wd->sc_flags & WDF_LBA48 && blkno > LBA48_THRESHOLD) 1549 wd->sc_wdc_bio.flags |= ATA_LBA48; 1550 if (wd->sc_flags & WDF_LBA) 1551 wd->sc_wdc_bio.flags |= ATA_LBA; 1552 wd->sc_wdc_bio.bcount = 1553 min(nblks, wddumpmulti) * lp->d_secsize; 1554 wd->sc_wdc_bio.databuf = va; 1555 #ifndef WD_DUMP_NOT_TRUSTED 1556 switch (wd->atabus->ata_bio(wd->drvp, &wd->sc_wdc_bio)) { 1557 case WDC_TRY_AGAIN: 1558 panic("wddump: try again"); 1559 break; 1560 case WDC_QUEUED: 1561 panic("wddump: polled command has been queued"); 1562 break; 1563 case WDC_COMPLETE: 1564 break; 1565 } 1566 switch(wd->sc_wdc_bio.error) { 1567 case TIMEOUT: 1568 printf("wddump: device timed out"); 1569 err = EIO; 1570 break; 1571 case ERR_DF: 1572 printf("wddump: drive fault"); 1573 err = EIO; 1574 break; 1575 case ERR_DMA: 1576 printf("wddump: DMA error"); 1577 err = EIO; 1578 break; 1579 case ERROR: 1580 printf("wddump: "); 1581 wdperror(wd); 1582 err = EIO; 1583 break; 1584 case NOERROR: 1585 err = 0; 1586 break; 1587 default: 1588 panic("wddump: unknown error type"); 1589 } 1590 if (err != 0) { 1591 if (wddumpmulti != 1) { 1592 wddumpmulti = 1; /* retry in single-sector */ 1593 printf(", retrying\n"); 1594 goto again; 1595 } 1596 printf("\n"); 1597 return err; 1598 } 1599 #else /* WD_DUMP_NOT_TRUSTED */ 1600 /* Let's just talk about this first... */ 1601 printf("wd%d: dump addr 0x%x, cylin %d, head %d, sector %d\n", 1602 unit, va, cylin, head, sector); 1603 delay(500 * 1000); /* half a second */ 1604 #endif 1605 1606 /* update block count */ 1607 nblks -= min(nblks, wddumpmulti); 1608 blkno += min(nblks, wddumpmulti); 1609 va += min(nblks, wddumpmulti) * lp->d_secsize; 1610 } 1611 1612 wddoingadump = 0; 1613 return 0; 1614 } 1615 1616 #ifdef HAS_BAD144_HANDLING 1617 /* 1618 * Internalize the bad sector table. 1619 */ 1620 void 1621 bad144intern(wd) 1622 struct wd_softc *wd; 1623 { 1624 struct dkbad *bt = &wd->sc_dk.dk_cpulabel->bad; 1625 struct disklabel *lp = wd->sc_dk.dk_label; 1626 int i = 0; 1627 1628 WDCDEBUG_PRINT(("bad144intern\n"), DEBUG_XFERS); 1629 1630 for (; i < NBT_BAD; i++) { 1631 if (bt->bt_bad[i].bt_cyl == 0xffff) 1632 break; 1633 wd->sc_badsect[i] = 1634 bt->bt_bad[i].bt_cyl * lp->d_secpercyl + 1635 (bt->bt_bad[i].bt_trksec >> 8) * lp->d_nsectors + 1636 (bt->bt_bad[i].bt_trksec & 0xff); 1637 } 1638 for (; i < NBT_BAD+1; i++) 1639 wd->sc_badsect[i] = -1; 1640 } 1641 #endif 1642 1643 int 1644 wd_get_params(wd, flags, params) 1645 struct wd_softc *wd; 1646 u_int8_t flags; 1647 struct ataparams *params; 1648 { 1649 switch (wd->atabus->ata_get_params(wd->drvp, flags, params)) { 1650 case CMD_AGAIN: 1651 return 1; 1652 case CMD_ERR: 1653 /* 1654 * We `know' there's a drive here; just assume it's old. 1655 * This geometry is only used to read the MBR and print a 1656 * (false) attach message. 1657 */ 1658 strncpy(params->atap_model, "ST506", 1659 sizeof params->atap_model); 1660 params->atap_config = ATA_CFG_FIXED; 1661 params->atap_cylinders = 1024; 1662 params->atap_heads = 8; 1663 params->atap_sectors = 17; 1664 params->atap_multi = 1; 1665 params->atap_capabilities1 = params->atap_capabilities2 = 0; 1666 wd->drvp->ata_vers = -1; /* Mark it as pre-ATA */ 1667 return 0; 1668 case CMD_OK: 1669 return 0; 1670 default: 1671 panic("wd_get_params: bad return code from ata_get_params"); 1672 /* NOTREACHED */ 1673 } 1674 } 1675 1676 int 1677 wd_getcache(wd, bitsp) 1678 struct wd_softc *wd; 1679 int *bitsp; 1680 { 1681 struct ataparams params; 1682 1683 if (wd_get_params(wd, AT_WAIT, ¶ms) != 0) 1684 return EIO; 1685 if (params.atap_cmd_set1 == 0x0000 || 1686 params.atap_cmd_set1 == 0xffff || 1687 (params.atap_cmd_set1 & WDC_CMD1_CACHE) == 0) { 1688 *bitsp = 0; 1689 return 0; 1690 } 1691 *bitsp = DKCACHE_WCHANGE | DKCACHE_READ; 1692 if (params.atap_cmd1_en & WDC_CMD1_CACHE) 1693 *bitsp |= DKCACHE_WRITE; 1694 1695 return 0; 1696 } 1697 1698 int 1699 wd_setcache(wd, bits) 1700 struct wd_softc *wd; 1701 int bits; 1702 { 1703 struct ataparams params; 1704 struct wdc_command wdc_c; 1705 1706 if (wd_get_params(wd, AT_WAIT, ¶ms) != 0) 1707 return EIO; 1708 1709 if (params.atap_cmd_set1 == 0x0000 || 1710 params.atap_cmd_set1 == 0xffff || 1711 (params.atap_cmd_set1 & WDC_CMD1_CACHE) == 0) 1712 return EOPNOTSUPP; 1713 1714 if ((bits & DKCACHE_READ) == 0 || 1715 (bits & DKCACHE_SAVE) != 0) 1716 return EOPNOTSUPP; 1717 1718 memset(&wdc_c, 0, sizeof(struct wdc_command)); 1719 wdc_c.r_command = SET_FEATURES; 1720 wdc_c.r_st_bmask = 0; 1721 wdc_c.r_st_pmask = 0; 1722 wdc_c.timeout = 30000; /* 30s timeout */ 1723 wdc_c.flags = AT_WAIT; 1724 if (bits & DKCACHE_WRITE) 1725 wdc_c.r_precomp = WDSF_WRITE_CACHE_EN; 1726 else 1727 wdc_c.r_precomp = WDSF_WRITE_CACHE_DS; 1728 if (wd->atabus->ata_exec_command(wd->drvp, &wdc_c) != WDC_COMPLETE) { 1729 printf("%s: wd_setcache command not complete\n", 1730 wd->sc_dev.dv_xname); 1731 return EIO; 1732 } 1733 if (wdc_c.flags & (AT_ERROR | AT_TIMEOU | AT_DF)) { 1734 printf("%s: wd_setcache command error 0x%x\n", 1735 wd->sc_dev.dv_xname, wdc_c.flags); 1736 return EIO; 1737 } 1738 if (wdc_c.flags & ERR_NODEV) 1739 return ENODEV; 1740 return 0; 1741 } 1742 1743 void 1744 wd_flushcache(wd, flags) 1745 struct wd_softc *wd; 1746 int flags; 1747 { 1748 struct wdc_command wdc_c; 1749 1750 if (wd->drvp->ata_vers < 4) /* WDCC_FLUSHCACHE is here since ATA-4 */ 1751 return; 1752 memset(&wdc_c, 0, sizeof(struct wdc_command)); 1753 wdc_c.r_command = WDCC_FLUSHCACHE; 1754 wdc_c.r_st_bmask = WDCS_DRDY; 1755 wdc_c.r_st_pmask = WDCS_DRDY; 1756 wdc_c.flags = flags; 1757 wdc_c.timeout = 30000; /* 30s timeout */ 1758 if (wd->atabus->ata_exec_command(wd->drvp, &wdc_c) != WDC_COMPLETE) { 1759 printf("%s: flush cache command didn't complete\n", 1760 wd->sc_dev.dv_xname); 1761 } 1762 if (wdc_c.flags & AT_TIMEOU) { 1763 printf("%s: flush cache command timeout\n", 1764 wd->sc_dev.dv_xname); 1765 } 1766 if (wdc_c.flags & AT_DF) { 1767 printf("%s: flush cache command: drive fault\n", 1768 wd->sc_dev.dv_xname); 1769 } 1770 /* 1771 * Ignore error register, it shouldn't report anything else 1772 * than COMMAND ABORTED, which means the device doesn't support 1773 * flush cache 1774 */ 1775 } 1776 1777 void 1778 wd_shutdown(arg) 1779 void *arg; 1780 { 1781 struct wd_softc *wd = arg; 1782 wd_flushcache(wd, AT_POLL); 1783 } 1784 1785 /* 1786 * Allocate space for a ioctl queue structure. Mostly taken from 1787 * scsipi_ioctl.c 1788 */ 1789 struct wd_ioctl * 1790 wi_get() 1791 { 1792 struct wd_ioctl *wi; 1793 int s; 1794 1795 wi = malloc(sizeof(struct wd_ioctl), M_TEMP, M_WAITOK|M_ZERO); 1796 simple_lock_init(&wi->wi_bp.b_interlock); 1797 s = splbio(); 1798 LIST_INSERT_HEAD(&wi_head, wi, wi_list); 1799 splx(s); 1800 return (wi); 1801 } 1802 1803 /* 1804 * Free an ioctl structure and remove it from our list 1805 */ 1806 1807 void 1808 wi_free(wi) 1809 struct wd_ioctl *wi; 1810 { 1811 int s; 1812 1813 s = splbio(); 1814 LIST_REMOVE(wi, wi_list); 1815 splx(s); 1816 free(wi, M_TEMP); 1817 } 1818 1819 /* 1820 * Find a wd_ioctl structure based on the struct buf. 1821 */ 1822 1823 struct wd_ioctl * 1824 wi_find(bp) 1825 struct buf *bp; 1826 { 1827 struct wd_ioctl *wi; 1828 int s; 1829 1830 s = splbio(); 1831 for (wi = wi_head.lh_first; wi != 0; wi = wi->wi_list.le_next) 1832 if (bp == &wi->wi_bp) 1833 break; 1834 splx(s); 1835 return (wi); 1836 } 1837 1838 /* 1839 * Ioctl pseudo strategy routine 1840 * 1841 * This is mostly stolen from scsipi_ioctl.c:scsistrategy(). What 1842 * happens here is: 1843 * 1844 * - wdioctl() queues a wd_ioctl structure. 1845 * 1846 * - wdioctl() calls physio/wdioctlstrategy based on whether or not 1847 * user space I/O is required. If physio() is called, physio() eventually 1848 * calls wdioctlstrategy(). 1849 * 1850 * - In either case, wdioctlstrategy() calls wd->atabus->ata_exec_command() 1851 * to perform the actual command 1852 * 1853 * The reason for the use of the pseudo strategy routine is because 1854 * when doing I/O to/from user space, physio _really_ wants to be in 1855 * the loop. We could put the entire buffer into the ioctl request 1856 * structure, but that won't scale if we want to do things like download 1857 * microcode. 1858 */ 1859 1860 void 1861 wdioctlstrategy(bp) 1862 struct buf *bp; 1863 { 1864 struct wd_ioctl *wi; 1865 struct wdc_command wdc_c; 1866 int error = 0; 1867 1868 wi = wi_find(bp); 1869 if (wi == NULL) { 1870 printf("user_strat: No ioctl\n"); 1871 error = EINVAL; 1872 goto bad; 1873 } 1874 1875 memset(&wdc_c, 0, sizeof(wdc_c)); 1876 1877 /* 1878 * Abort if physio broke up the transfer 1879 */ 1880 1881 if (bp->b_bcount != wi->wi_atareq.datalen) { 1882 printf("physio split wd ioctl request... cannot proceed\n"); 1883 error = EIO; 1884 goto bad; 1885 } 1886 1887 /* 1888 * Abort if we didn't get a buffer size that was a multiple of 1889 * our sector size (or was larger than NBBY) 1890 */ 1891 1892 if ((bp->b_bcount % wi->wi_softc->sc_dk.dk_label->d_secsize) != 0 || 1893 (bp->b_bcount / wi->wi_softc->sc_dk.dk_label->d_secsize) >= 1894 (1 << NBBY)) { 1895 error = EINVAL; 1896 goto bad; 1897 } 1898 1899 /* 1900 * Make sure a timeout was supplied in the ioctl request 1901 */ 1902 1903 if (wi->wi_atareq.timeout == 0) { 1904 error = EINVAL; 1905 goto bad; 1906 } 1907 1908 if (wi->wi_atareq.flags & ATACMD_READ) 1909 wdc_c.flags |= AT_READ; 1910 else if (wi->wi_atareq.flags & ATACMD_WRITE) 1911 wdc_c.flags |= AT_WRITE; 1912 1913 if (wi->wi_atareq.flags & ATACMD_READREG) 1914 wdc_c.flags |= AT_READREG; 1915 1916 wdc_c.flags |= AT_WAIT; 1917 1918 wdc_c.timeout = wi->wi_atareq.timeout; 1919 wdc_c.r_command = wi->wi_atareq.command; 1920 wdc_c.r_head = wi->wi_atareq.head & 0x0f; 1921 wdc_c.r_cyl = wi->wi_atareq.cylinder; 1922 wdc_c.r_sector = wi->wi_atareq.sec_num; 1923 wdc_c.r_count = wi->wi_atareq.sec_count; 1924 wdc_c.r_precomp = wi->wi_atareq.features; 1925 wdc_c.r_st_bmask = WDCS_DRDY; 1926 wdc_c.r_st_pmask = WDCS_DRDY; 1927 wdc_c.data = wi->wi_bp.b_data; 1928 wdc_c.bcount = wi->wi_bp.b_bcount; 1929 1930 if (wi->wi_softc->atabus->ata_exec_command(wi->wi_softc->drvp, &wdc_c) 1931 != WDC_COMPLETE) { 1932 wi->wi_atareq.retsts = ATACMD_ERROR; 1933 goto bad; 1934 } 1935 1936 if (wdc_c.flags & (AT_ERROR | AT_TIMEOU | AT_DF)) { 1937 if (wdc_c.flags & AT_ERROR) { 1938 wi->wi_atareq.retsts = ATACMD_ERROR; 1939 wi->wi_atareq.error = wdc_c.r_error; 1940 } else if (wdc_c.flags & AT_DF) 1941 wi->wi_atareq.retsts = ATACMD_DF; 1942 else 1943 wi->wi_atareq.retsts = ATACMD_TIMEOUT; 1944 } else { 1945 wi->wi_atareq.retsts = ATACMD_OK; 1946 if (wi->wi_atareq.flags & ATACMD_READREG) { 1947 wi->wi_atareq.head = wdc_c.r_head ; 1948 wi->wi_atareq.cylinder = wdc_c.r_cyl; 1949 wi->wi_atareq.sec_num = wdc_c.r_sector; 1950 wi->wi_atareq.sec_count = wdc_c.r_count; 1951 wi->wi_atareq.features = wdc_c.r_precomp; 1952 wi->wi_atareq.error = wdc_c.r_error; 1953 } 1954 } 1955 1956 bp->b_error = 0; 1957 biodone(bp); 1958 return; 1959 bad: 1960 bp->b_flags |= B_ERROR; 1961 bp->b_error = error; 1962 biodone(bp); 1963 } 1964
Indexes created Mon Sep 29 03:10:08 GMT 2025