wd.c revision 1.299
1 /* $NetBSD: wd.c,v 1.299 2005/03/31 11:28:53 yamt 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 1.299 2005/03/31 11:28:53 yamt Exp $"); 70 71 #ifndef ATADEBUG 72 #define ATADEBUG 73 #endif /* ATADEBUG */ 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/bufq.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 #include <dev/ata/atareg.h> 102 #include <dev/ata/atavar.h> 103 #include <dev/ata/wdvar.h> 104 #include <dev/ic/wdcreg.h> 105 #include <sys/ataio.h> 106 #include "locators.h" 107 108 #define LBA48_THRESHOLD (0xfffffff) /* 128GB / DEV_BSIZE */ 109 110 #define WDIORETRIES_SINGLE 4 /* number of retries before single-sector */ 111 #define WDIORETRIES 5 /* number of retries before giving up */ 112 #define RECOVERYTIME hz/2 /* time to wait before retrying a cmd */ 113 114 #define WDUNIT(dev) DISKUNIT(dev) 115 #define WDPART(dev) DISKPART(dev) 116 #define WDMINOR(unit, part) DISKMINOR(unit, part) 117 #define MAKEWDDEV(maj, unit, part) MAKEDISKDEV(maj, unit, part) 118 119 #define WDLABELDEV(dev) (MAKEWDDEV(major(dev), WDUNIT(dev), RAW_PART)) 120 121 #define DEBUG_INTR 0x01 122 #define DEBUG_XFERS 0x02 123 #define DEBUG_STATUS 0x04 124 #define DEBUG_FUNCS 0x08 125 #define DEBUG_PROBE 0x10 126 #ifdef ATADEBUG 127 int wdcdebug_wd_mask = 0x0; 128 #define ATADEBUG_PRINT(args, level) \ 129 if (wdcdebug_wd_mask & (level)) \ 130 printf args 131 #else 132 #define ATADEBUG_PRINT(args, level) 133 #endif 134 135 int wdprobe(struct device *, struct cfdata *, void *); 136 void wdattach(struct device *, struct device *, void *); 137 int wddetach(struct device *, int); 138 int wdactivate(struct device *, enum devact); 139 int wdprint(void *, char *); 140 void wdperror(const struct wd_softc *); 141 142 CFATTACH_DECL(wd, sizeof(struct wd_softc), 143 wdprobe, wdattach, wddetach, wdactivate); 144 145 extern struct cfdriver wd_cd; 146 147 dev_type_open(wdopen); 148 dev_type_close(wdclose); 149 dev_type_read(wdread); 150 dev_type_write(wdwrite); 151 dev_type_ioctl(wdioctl); 152 dev_type_strategy(wdstrategy); 153 dev_type_dump(wddump); 154 dev_type_size(wdsize); 155 156 const struct bdevsw wd_bdevsw = { 157 wdopen, wdclose, wdstrategy, wdioctl, wddump, wdsize, D_DISK 158 }; 159 160 const struct cdevsw wd_cdevsw = { 161 wdopen, wdclose, wdread, wdwrite, wdioctl, 162 nostop, notty, nopoll, nommap, nokqfilter, D_DISK 163 }; 164 165 /* 166 * Glue necessary to hook WDCIOCCOMMAND into physio 167 */ 168 169 struct wd_ioctl { 170 LIST_ENTRY(wd_ioctl) wi_list; 171 struct buf wi_bp; 172 struct uio wi_uio; 173 struct iovec wi_iov; 174 atareq_t wi_atareq; 175 struct wd_softc *wi_softc; 176 }; 177 178 LIST_HEAD(, wd_ioctl) wi_head; 179 180 struct wd_ioctl *wi_find(struct buf *); 181 void wi_free(struct wd_ioctl *); 182 struct wd_ioctl *wi_get(void); 183 void wdioctlstrategy(struct buf *); 184 185 void wdgetdefaultlabel(struct wd_softc *, struct disklabel *); 186 void wdgetdisklabel(struct wd_softc *); 187 void wdstart(void *); 188 void __wdstart(struct wd_softc*, struct buf *); 189 void wdrestart(void *); 190 void wddone(void *); 191 int wd_get_params(struct wd_softc *, u_int8_t, struct ataparams *); 192 int wd_standby(struct wd_softc *, int); 193 int wd_flushcache(struct wd_softc *, int); 194 void wd_shutdown(void *); 195 196 int wd_getcache(struct wd_softc *, int *); 197 int wd_setcache(struct wd_softc *, int); 198 199 struct dkdriver wddkdriver = { wdstrategy, minphys }; 200 201 #ifdef HAS_BAD144_HANDLING 202 static void bad144intern(struct wd_softc *); 203 #endif 204 205 #define WD_QUIRK_SPLIT_MOD15_WRITE 0x0001 /* must split certain writes */ 206 #define WD_QUIRK_FORCE_LBA48 0x0002 /* must use LBA48 commands */ 207 208 /* 209 * Quirk table for IDE drives. Put more-specific matches first, since 210 * a simple globbing routine is used for matching. 211 */ 212 static const struct wd_quirk { 213 const char *wdq_match; /* inquiry pattern to match */ 214 int wdq_quirks; /* drive quirks */ 215 } wd_quirk_table[] = { 216 /* 217 * Some Seagate S-ATA drives have a PHY which can get confused 218 * with the way data is packetized by some S-ATA controllers. 219 * 220 * The work-around is to split in two any write transfer whose 221 * sector count % 15 == 1 (assuming 512 byte sectors). 222 * 223 * XXX This is an incomplete list. There are at least a couple 224 * XXX more model numbers. If you have trouble with such transfers 225 * XXX (8K is the most common) on Seagate S-ATA drives, please 226 * XXX notify thorpej (at) NetBSD.org. 227 */ 228 { "ST3120023AS", 229 WD_QUIRK_SPLIT_MOD15_WRITE }, 230 { "ST380023AS", 231 WD_QUIRK_SPLIT_MOD15_WRITE }, 232 233 /* 234 * This seagate drive seems to have issue addressing sector 0xfffffff 235 * (aka LBA48_THRESHOLD) in LBA mode. The workaround is to force 236 * LBA48 237 */ 238 { "ST3200822A", 239 WD_QUIRK_FORCE_LBA48 }, 240 241 { NULL, 242 0 } 243 }; 244 245 static const struct wd_quirk * 246 wd_lookup_quirks(const char *name) 247 { 248 const struct wd_quirk *wdq; 249 const char *estr; 250 251 for (wdq = wd_quirk_table; wdq->wdq_match != NULL; wdq++) { 252 /* 253 * We only want exact matches (which include matches 254 * against globbing characters). 255 */ 256 if (pmatch(name, wdq->wdq_match, &estr) == 2) 257 return (wdq); 258 } 259 return (NULL); 260 } 261 262 int 263 wdprobe(struct device *parent, struct cfdata *match, void *aux) 264 { 265 struct ata_device *adev = aux; 266 267 if (adev == NULL) 268 return 0; 269 if (adev->adev_bustype->bustype_type != SCSIPI_BUSTYPE_ATA) 270 return 0; 271 272 if (match->cf_loc[ATA_HLCF_DRIVE] != ATA_HLCF_DRIVE_DEFAULT && 273 match->cf_loc[ATA_HLCF_DRIVE] != adev->adev_drv_data->drive) 274 return 0; 275 return 1; 276 } 277 278 void 279 wdattach(struct device *parent, struct device *self, void *aux) 280 { 281 struct wd_softc *wd = (void *)self; 282 struct ata_device *adev= aux; 283 int i, blank; 284 char buf[41], pbuf[9], c, *p, *q; 285 const struct wd_quirk *wdq; 286 ATADEBUG_PRINT(("wdattach\n"), DEBUG_FUNCS | DEBUG_PROBE); 287 288 callout_init(&wd->sc_restart_ch); 289 bufq_alloc(&wd->sc_q, BUFQ_DISK_DEFAULT_STRAT()|BUFQ_SORT_RAWBLOCK); 290 #ifdef WD_SOFTBADSECT 291 SLIST_INIT(&wd->sc_bslist); 292 #endif 293 wd->atabus = adev->adev_bustype; 294 wd->openings = adev->adev_openings; 295 wd->drvp = adev->adev_drv_data; 296 297 wd->drvp->drv_done = wddone; 298 wd->drvp->drv_softc = &wd->sc_dev; 299 300 aprint_naive("\n"); 301 302 /* read our drive info */ 303 if (wd_get_params(wd, AT_WAIT, &wd->sc_params) != 0) { 304 aprint_error("\n%s: IDENTIFY failed\n", wd->sc_dev.dv_xname); 305 return; 306 } 307 308 for (blank = 0, p = wd->sc_params.atap_model, q = buf, i = 0; 309 i < sizeof(wd->sc_params.atap_model); i++) { 310 c = *p++; 311 if (c == '\0') 312 break; 313 if (c != ' ') { 314 if (blank) { 315 *q++ = ' '; 316 blank = 0; 317 } 318 *q++ = c; 319 } else 320 blank = 1; 321 } 322 *q++ = '\0'; 323 324 aprint_normal(": <%s>\n", buf); 325 326 wdq = wd_lookup_quirks(buf); 327 if (wdq != NULL) 328 wd->sc_quirks = wdq->wdq_quirks; 329 330 if ((wd->sc_params.atap_multi & 0xff) > 1) { 331 wd->sc_multi = wd->sc_params.atap_multi & 0xff; 332 } else { 333 wd->sc_multi = 1; 334 } 335 336 aprint_normal("%s: drive supports %d-sector PIO transfers,", 337 wd->sc_dev.dv_xname, wd->sc_multi); 338 339 /* 48-bit LBA addressing */ 340 if ((wd->sc_params.atap_cmd2_en & ATA_CMD2_LBA48) != 0) 341 wd->sc_flags |= WDF_LBA48; 342 343 /* Prior to ATA-4, LBA was optional. */ 344 if ((wd->sc_params.atap_capabilities1 & WDC_CAP_LBA) != 0) 345 wd->sc_flags |= WDF_LBA; 346 #if 0 347 /* ATA-4 requires LBA. */ 348 if (wd->sc_params.atap_ataversion != 0xffff && 349 wd->sc_params.atap_ataversion >= WDC_VER_ATA4) 350 wd->sc_flags |= WDF_LBA; 351 #endif 352 353 if ((wd->sc_flags & WDF_LBA48) != 0) { 354 aprint_normal(" LBA48 addressing\n"); 355 wd->sc_capacity = 356 ((u_int64_t) wd->sc_params.__reserved6[11] << 48) | 357 ((u_int64_t) wd->sc_params.__reserved6[10] << 32) | 358 ((u_int64_t) wd->sc_params.__reserved6[9] << 16) | 359 ((u_int64_t) wd->sc_params.__reserved6[8] << 0); 360 } else if ((wd->sc_flags & WDF_LBA) != 0) { 361 aprint_normal(" LBA addressing\n"); 362 wd->sc_capacity = 363 (wd->sc_params.atap_capacity[1] << 16) | 364 wd->sc_params.atap_capacity[0]; 365 } else { 366 aprint_normal(" chs addressing\n"); 367 wd->sc_capacity = 368 wd->sc_params.atap_cylinders * 369 wd->sc_params.atap_heads * 370 wd->sc_params.atap_sectors; 371 } 372 format_bytes(pbuf, sizeof(pbuf), wd->sc_capacity * DEV_BSIZE); 373 aprint_normal("%s: %s, %d cyl, %d head, %d sec, " 374 "%d bytes/sect x %llu sectors\n", 375 self->dv_xname, pbuf, 376 (wd->sc_flags & WDF_LBA) ? (int)(wd->sc_capacity / 377 (wd->sc_params.atap_heads * wd->sc_params.atap_sectors)) : 378 wd->sc_params.atap_cylinders, 379 wd->sc_params.atap_heads, wd->sc_params.atap_sectors, 380 DEV_BSIZE, (unsigned long long)wd->sc_capacity); 381 382 ATADEBUG_PRINT(("%s: atap_dmatiming_mimi=%d, atap_dmatiming_recom=%d\n", 383 self->dv_xname, wd->sc_params.atap_dmatiming_mimi, 384 wd->sc_params.atap_dmatiming_recom), DEBUG_PROBE); 385 /* 386 * Initialize and attach the disk structure. 387 */ 388 wd->sc_dk.dk_driver = &wddkdriver; 389 wd->sc_dk.dk_name = wd->sc_dev.dv_xname; 390 disk_attach(&wd->sc_dk); 391 wd->sc_wdc_bio.lp = wd->sc_dk.dk_label; 392 wd->sc_sdhook = shutdownhook_establish(wd_shutdown, wd); 393 if (wd->sc_sdhook == NULL) 394 aprint_error("%s: WARNING: unable to establish shutdown hook\n", 395 wd->sc_dev.dv_xname); 396 #if NRND > 0 397 rnd_attach_source(&wd->rnd_source, wd->sc_dev.dv_xname, 398 RND_TYPE_DISK, 0); 399 #endif 400 401 /* Discover wedges on this disk. */ 402 dkwedge_discover(&wd->sc_dk); 403 } 404 405 int 406 wdactivate(struct device *self, enum devact act) 407 { 408 int rv = 0; 409 410 switch (act) { 411 case DVACT_ACTIVATE: 412 rv = EOPNOTSUPP; 413 break; 414 415 case DVACT_DEACTIVATE: 416 /* 417 * Nothing to do; we key off the device's DVF_ACTIVATE. 418 */ 419 break; 420 } 421 return (rv); 422 } 423 424 int 425 wddetach(struct device *self, int flags) 426 { 427 struct wd_softc *sc = (struct wd_softc *)self; 428 int s, bmaj, cmaj, i, mn; 429 430 /* locate the major number */ 431 bmaj = bdevsw_lookup_major(&wd_bdevsw); 432 cmaj = cdevsw_lookup_major(&wd_cdevsw); 433 434 /* Nuke the vnodes for any open instances. */ 435 for (i = 0; i < MAXPARTITIONS; i++) { 436 mn = WDMINOR(self->dv_unit, i); 437 vdevgone(bmaj, mn, mn, VBLK); 438 vdevgone(cmaj, mn, mn, VCHR); 439 } 440 441 /* Delete all of our wedges. */ 442 dkwedge_delall(&sc->sc_dk); 443 444 s = splbio(); 445 446 /* Kill off any queued buffers. */ 447 bufq_drain(&sc->sc_q); 448 449 bufq_free(&sc->sc_q); 450 sc->atabus->ata_killpending(sc->drvp); 451 452 splx(s); 453 454 /* Detach disk. */ 455 disk_detach(&sc->sc_dk); 456 457 #ifdef WD_SOFTBADSECT 458 /* Clean out the bad sector list */ 459 while (!SLIST_EMPTY(&sc->sc_bslist)) { 460 void *head = SLIST_FIRST(&sc->sc_bslist); 461 SLIST_REMOVE_HEAD(&sc->sc_bslist, dbs_next); 462 free(head, M_TEMP); 463 } 464 sc->sc_bscount = 0; 465 #endif 466 467 /* Get rid of the shutdown hook. */ 468 if (sc->sc_sdhook != NULL) 469 shutdownhook_disestablish(sc->sc_sdhook); 470 471 #if NRND > 0 472 /* Unhook the entropy source. */ 473 rnd_detach_source(&sc->rnd_source); 474 #endif 475 476 sc->drvp->drive_flags = 0; /* no drive any more here */ 477 478 return (0); 479 } 480 481 /* 482 * Read/write routine for a buffer. Validates the arguments and schedules the 483 * transfer. Does not wait for the transfer to complete. 484 */ 485 void 486 wdstrategy(struct buf *bp) 487 { 488 struct wd_softc *wd = device_lookup(&wd_cd, WDUNIT(bp->b_dev)); 489 struct disklabel *lp = wd->sc_dk.dk_label; 490 daddr_t blkno; 491 int s; 492 493 ATADEBUG_PRINT(("wdstrategy (%s)\n", wd->sc_dev.dv_xname), 494 DEBUG_XFERS); 495 496 /* Valid request? */ 497 if (bp->b_blkno < 0 || 498 (bp->b_bcount % lp->d_secsize) != 0 || 499 (bp->b_bcount / lp->d_secsize) >= (1 << NBBY)) { 500 bp->b_error = EINVAL; 501 goto bad; 502 } 503 504 /* If device invalidated (e.g. media change, door open), error. */ 505 if ((wd->sc_flags & WDF_LOADED) == 0) { 506 bp->b_error = EIO; 507 goto bad; 508 } 509 510 /* If it's a null transfer, return immediately. */ 511 if (bp->b_bcount == 0) 512 goto done; 513 514 /* 515 * Do bounds checking, adjust transfer. if error, process. 516 * If end of partition, just return. 517 */ 518 if (WDPART(bp->b_dev) == RAW_PART) { 519 if (bounds_check_with_mediasize(bp, DEV_BSIZE, 520 wd->sc_capacity) <= 0) 521 goto done; 522 } else { 523 if (bounds_check_with_label(&wd->sc_dk, bp, 524 (wd->sc_flags & (WDF_WLABEL|WDF_LABELLING)) != 0) <= 0) 525 goto done; 526 } 527 528 /* 529 * Now convert the block number to absolute and put it in 530 * terms of the device's logical block size. 531 */ 532 if (lp->d_secsize >= DEV_BSIZE) 533 blkno = bp->b_blkno / (lp->d_secsize / DEV_BSIZE); 534 else 535 blkno = bp->b_blkno * (DEV_BSIZE / lp->d_secsize); 536 537 if (WDPART(bp->b_dev) != RAW_PART) 538 blkno += lp->d_partitions[WDPART(bp->b_dev)].p_offset; 539 540 bp->b_rawblkno = blkno; 541 542 #ifdef WD_SOFTBADSECT 543 /* 544 * If the transfer about to be attempted contains only a block that 545 * is known to be bad then return an error for the transfer without 546 * even attempting to start a transfer up under the premis that we 547 * will just end up doing more retries for a transfer that will end 548 * up failing again. 549 * XXX:SMP - mutex required to protect with DIOCBSFLUSH 550 */ 551 if (__predict_false(!SLIST_EMPTY(&wd->sc_bslist))) { 552 struct disk_badsectors *dbs; 553 daddr_t maxblk = blkno + (bp->b_bcount >> DEV_BSHIFT) - 1; 554 555 SLIST_FOREACH(dbs, &wd->sc_bslist, dbs_next) 556 if ((dbs->dbs_min <= blkno && blkno <= dbs->dbs_max) || 557 (dbs->dbs_min <= maxblk && maxblk <= dbs->dbs_max)){ 558 bp->b_error = EIO; 559 goto bad; 560 } 561 } 562 #endif 563 564 /* Queue transfer on drive, activate drive and controller if idle. */ 565 s = splbio(); 566 BUFQ_PUT(&wd->sc_q, bp); 567 wdstart(wd); 568 splx(s); 569 return; 570 bad: 571 bp->b_flags |= B_ERROR; 572 done: 573 /* Toss transfer; we're done early. */ 574 bp->b_resid = bp->b_bcount; 575 biodone(bp); 576 } 577 578 /* 579 * Queue a drive for I/O. 580 */ 581 void 582 wdstart(void *arg) 583 { 584 struct wd_softc *wd = arg; 585 struct buf *bp = NULL; 586 587 ATADEBUG_PRINT(("wdstart %s\n", wd->sc_dev.dv_xname), 588 DEBUG_XFERS); 589 while (wd->openings > 0) { 590 591 /* Is there a buf for us ? */ 592 if ((bp = BUFQ_GET(&wd->sc_q)) == NULL) 593 return; 594 595 /* 596 * Make the command. First lock the device 597 */ 598 wd->openings--; 599 600 wd->retries = 0; 601 __wdstart(wd, bp); 602 } 603 } 604 605 static void 606 wd_split_mod15_write(struct buf *bp) 607 { 608 struct buf *obp = bp->b_private; 609 struct wd_softc *sc = wd_cd.cd_devs[DISKUNIT(obp->b_dev)]; 610 611 if (__predict_false(bp->b_flags & B_ERROR) != 0) { 612 /* 613 * Propagate the error. If this was the first half of 614 * the original transfer, make sure to account for that 615 * in the residual. 616 */ 617 if (bp->b_data == obp->b_data) 618 bp->b_resid += bp->b_bcount; 619 goto done; 620 } 621 622 /* 623 * If this was the second half of the transfer, we're all done! 624 */ 625 if (bp->b_data != obp->b_data) 626 goto done; 627 628 /* 629 * Advance the pointer to the second half and issue that command 630 * using the same opening. 631 */ 632 bp->b_flags = obp->b_flags | B_CALL; 633 bp->b_data += bp->b_bcount; 634 bp->b_blkno += (bp->b_bcount / 512); 635 bp->b_rawblkno += (bp->b_bcount / 512); 636 __wdstart(sc, bp); 637 return; 638 639 done: 640 obp->b_flags |= (bp->b_flags & (B_EINTR|B_ERROR)); 641 obp->b_error = bp->b_error; 642 obp->b_resid = bp->b_resid; 643 pool_put(&bufpool, bp); 644 biodone(obp); 645 sc->openings++; 646 /* wddone() will call wdstart() */ 647 } 648 649 void 650 __wdstart(struct wd_softc *wd, struct buf *bp) 651 { 652 653 /* 654 * Deal with the "split mod15 write" quirk. We just divide the 655 * transfer in two, doing the first half and then then second half 656 * with the same command opening. 657 * 658 * Note we MUST do this here, because we can't let insertion 659 * into the bufq cause the transfers to be re-merged. 660 */ 661 if (__predict_false((wd->sc_quirks & WD_QUIRK_SPLIT_MOD15_WRITE) != 0 && 662 (bp->b_flags & B_READ) == 0 && 663 bp->b_bcount > 512 && 664 ((bp->b_bcount / 512) % 15) == 1)) { 665 struct buf *nbp; 666 667 /* already at splbio */ 668 nbp = pool_get(&bufpool, PR_NOWAIT); 669 if (__predict_false(nbp == NULL)) { 670 /* No memory -- fail the iop. */ 671 bp->b_error = ENOMEM; 672 bp->b_flags |= B_ERROR; 673 bp->b_resid = bp->b_bcount; 674 biodone(bp); 675 wd->openings++; 676 return; 677 } 678 679 BUF_INIT(nbp); 680 nbp->b_error = 0; 681 nbp->b_proc = bp->b_proc; 682 nbp->b_vp = NULLVP; 683 nbp->b_dev = bp->b_dev; 684 685 nbp->b_bcount = bp->b_bcount / 2; 686 nbp->b_bufsize = bp->b_bcount / 2; 687 nbp->b_data = bp->b_data; 688 689 nbp->b_blkno = bp->b_blkno; 690 nbp->b_rawblkno = bp->b_rawblkno; 691 692 nbp->b_flags = bp->b_flags | B_CALL; 693 nbp->b_iodone = wd_split_mod15_write; 694 695 /* Put ptr to orig buf in b_private and use new buf */ 696 nbp->b_private = bp; 697 698 BIO_COPYPRIO(nbp, bp); 699 700 bp = nbp; 701 } 702 703 wd->sc_wdc_bio.blkno = bp->b_rawblkno; 704 wd->sc_wdc_bio.blkdone =0; 705 wd->sc_bp = bp; 706 /* 707 * If we're retrying, retry in single-sector mode. This will give us 708 * the sector number of the problem, and will eventually allow the 709 * transfer to succeed. 710 */ 711 if (wd->retries >= WDIORETRIES_SINGLE) 712 wd->sc_wdc_bio.flags = ATA_SINGLE; 713 else 714 wd->sc_wdc_bio.flags = 0; 715 if (wd->sc_flags & WDF_LBA48 && 716 (wd->sc_wdc_bio.blkno > LBA48_THRESHOLD || 717 (wd->sc_quirks & WD_QUIRK_FORCE_LBA48) != 0)) 718 wd->sc_wdc_bio.flags |= ATA_LBA48; 719 if (wd->sc_flags & WDF_LBA) 720 wd->sc_wdc_bio.flags |= ATA_LBA; 721 if (bp->b_flags & B_READ) 722 wd->sc_wdc_bio.flags |= ATA_READ; 723 wd->sc_wdc_bio.bcount = bp->b_bcount; 724 wd->sc_wdc_bio.databuf = bp->b_data; 725 /* Instrumentation. */ 726 disk_busy(&wd->sc_dk); 727 switch (wd->atabus->ata_bio(wd->drvp, &wd->sc_wdc_bio)) { 728 case ATACMD_TRY_AGAIN: 729 callout_reset(&wd->sc_restart_ch, hz, wdrestart, wd); 730 break; 731 case ATACMD_QUEUED: 732 case ATACMD_COMPLETE: 733 break; 734 default: 735 panic("__wdstart: bad return code from ata_bio()"); 736 } 737 } 738 739 void 740 wddone(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 ATADEBUG_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 ERR_RESET: 763 errmsg = "channel reset"; 764 goto retry2; 765 case ERROR: 766 /* Don't care about media change bits */ 767 if (wd->sc_wdc_bio.r_error != 0 && 768 (wd->sc_wdc_bio.r_error & ~(WDCE_MC | WDCE_MCR)) == 0) 769 goto noerror; 770 errmsg = "error"; 771 do_perror = 1; 772 retry: /* Just reset and retry. Can we do more ? */ 773 (*wd->atabus->ata_reset_drive)(wd->drvp, AT_RST_NOCMD); 774 retry2: 775 diskerr(bp, "wd", errmsg, LOG_PRINTF, 776 wd->sc_wdc_bio.blkdone, wd->sc_dk.dk_label); 777 if (wd->retries < WDIORETRIES) 778 printf(", retrying\n"); 779 if (do_perror) 780 wdperror(wd); 781 if (wd->retries < WDIORETRIES) { 782 wd->retries++; 783 callout_reset(&wd->sc_restart_ch, RECOVERYTIME, 784 wdrestart, wd); 785 return; 786 } 787 printf("\n"); 788 789 #ifdef WD_SOFTBADSECT 790 /* 791 * Not all errors indicate a failed block but those that do, 792 * put the block on the bad-block list for the device. Only 793 * do this for reads because the drive should do it for writes, 794 * itself, according to Manuel. 795 */ 796 if ((bp->b_flags & B_READ) && 797 ((wd->drvp->ata_vers >= 4 && wd->sc_wdc_bio.r_error & 64) || 798 (wd->drvp->ata_vers < 4 && wd->sc_wdc_bio.r_error & 192))) { 799 struct disk_badsectors *dbs; 800 801 dbs = malloc(sizeof *dbs, M_TEMP, M_WAITOK); 802 dbs->dbs_min = bp->b_rawblkno; 803 dbs->dbs_max = dbs->dbs_min + (bp->b_bcount >> DEV_BSHIFT) - 1; 804 microtime(&dbs->dbs_failedat); 805 SLIST_INSERT_HEAD(&wd->sc_bslist, dbs, dbs_next); 806 wd->sc_bscount++; 807 } 808 #endif 809 bp->b_flags |= B_ERROR; 810 bp->b_error = EIO; 811 break; 812 case NOERROR: 813 noerror: if ((wd->sc_wdc_bio.flags & ATA_CORR) || wd->retries > 0) 814 printf("%s: soft error (corrected)\n", 815 wd->sc_dev.dv_xname); 816 break; 817 case ERR_NODEV: 818 bp->b_flags |= B_ERROR; 819 bp->b_error = EIO; 820 break; 821 } 822 disk_unbusy(&wd->sc_dk, (bp->b_bcount - bp->b_resid), 823 (bp->b_flags & B_READ)); 824 #if NRND > 0 825 rnd_add_uint32(&wd->rnd_source, bp->b_blkno); 826 #endif 827 /* XXX Yuck, but we don't want to increment openings in this case */ 828 if (__predict_false((bp->b_flags & B_CALL) != 0 && 829 bp->b_iodone == wd_split_mod15_write)) 830 biodone(bp); 831 else { 832 biodone(bp); 833 wd->openings++; 834 } 835 wdstart(wd); 836 } 837 838 void 839 wdrestart(void *v) 840 { 841 struct wd_softc *wd = v; 842 struct buf *bp = wd->sc_bp; 843 int s; 844 ATADEBUG_PRINT(("wdrestart %s\n", wd->sc_dev.dv_xname), 845 DEBUG_XFERS); 846 847 s = splbio(); 848 __wdstart(v, bp); 849 splx(s); 850 } 851 852 int 853 wdread(dev_t dev, struct uio *uio, int flags) 854 { 855 856 ATADEBUG_PRINT(("wdread\n"), DEBUG_XFERS); 857 return (physio(wdstrategy, NULL, dev, B_READ, minphys, uio)); 858 } 859 860 int 861 wdwrite(dev_t dev, struct uio *uio, int flags) 862 { 863 864 ATADEBUG_PRINT(("wdwrite\n"), DEBUG_XFERS); 865 return (physio(wdstrategy, NULL, dev, B_WRITE, minphys, uio)); 866 } 867 868 int 869 wdopen(dev_t dev, int flag, int fmt, struct proc *p) 870 { 871 struct wd_softc *wd; 872 int part, error; 873 874 ATADEBUG_PRINT(("wdopen\n"), DEBUG_FUNCS); 875 wd = device_lookup(&wd_cd, WDUNIT(dev)); 876 if (wd == NULL) 877 return (ENXIO); 878 879 if ((wd->sc_dev.dv_flags & DVF_ACTIVE) == 0) 880 return (ENODEV); 881 882 part = WDPART(dev); 883 884 if ((error = lockmgr(&wd->sc_dk.dk_openlock, LK_EXCLUSIVE, NULL)) != 0) 885 return (error); 886 887 /* 888 * If there are wedges, and this is not RAW_PART, then we 889 * need to fail. 890 */ 891 if (wd->sc_dk.dk_nwedges != 0 && part != RAW_PART) { 892 error = EBUSY; 893 goto bad1; 894 } 895 896 /* 897 * If this is the first open of this device, add a reference 898 * to the adapter. 899 */ 900 if (wd->sc_dk.dk_openmask == 0 && 901 (error = wd->atabus->ata_addref(wd->drvp)) != 0) 902 goto bad1; 903 904 if (wd->sc_dk.dk_openmask != 0) { 905 /* 906 * If any partition is open, but the disk has been invalidated, 907 * disallow further opens. 908 */ 909 if ((wd->sc_flags & WDF_LOADED) == 0) { 910 error = EIO; 911 goto bad2; 912 } 913 } else { 914 if ((wd->sc_flags & WDF_LOADED) == 0) { 915 wd->sc_flags |= WDF_LOADED; 916 917 /* Load the physical device parameters. */ 918 wd_get_params(wd, AT_WAIT, &wd->sc_params); 919 920 /* Load the partition info if not already loaded. */ 921 wdgetdisklabel(wd); 922 } 923 } 924 925 /* Check that the partition exists. */ 926 if (part != RAW_PART && 927 (part >= wd->sc_dk.dk_label->d_npartitions || 928 wd->sc_dk.dk_label->d_partitions[part].p_fstype == FS_UNUSED)) { 929 error = ENXIO; 930 goto bad2; 931 } 932 933 /* Insure only one open at a time. */ 934 switch (fmt) { 935 case S_IFCHR: 936 wd->sc_dk.dk_copenmask |= (1 << part); 937 break; 938 case S_IFBLK: 939 wd->sc_dk.dk_bopenmask |= (1 << part); 940 break; 941 } 942 wd->sc_dk.dk_openmask = 943 wd->sc_dk.dk_copenmask | wd->sc_dk.dk_bopenmask; 944 945 (void) lockmgr(&wd->sc_dk.dk_openlock, LK_RELEASE, NULL); 946 return 0; 947 948 bad2: 949 if (wd->sc_dk.dk_openmask == 0) 950 wd->atabus->ata_delref(wd->drvp); 951 bad1: 952 (void) lockmgr(&wd->sc_dk.dk_openlock, LK_RELEASE, NULL); 953 return error; 954 } 955 956 int 957 wdclose(dev_t dev, int flag, int fmt, struct proc *p) 958 { 959 struct wd_softc *wd = device_lookup(&wd_cd, WDUNIT(dev)); 960 int part = WDPART(dev); 961 int error; 962 963 ATADEBUG_PRINT(("wdclose\n"), DEBUG_FUNCS); 964 965 if ((error = lockmgr(&wd->sc_dk.dk_openlock, LK_EXCLUSIVE, NULL)) != 0) 966 return error; 967 968 switch (fmt) { 969 case S_IFCHR: 970 wd->sc_dk.dk_copenmask &= ~(1 << part); 971 break; 972 case S_IFBLK: 973 wd->sc_dk.dk_bopenmask &= ~(1 << part); 974 break; 975 } 976 wd->sc_dk.dk_openmask = 977 wd->sc_dk.dk_copenmask | wd->sc_dk.dk_bopenmask; 978 979 if (wd->sc_dk.dk_openmask == 0) { 980 wd_flushcache(wd, AT_WAIT); 981 982 if (! (wd->sc_flags & WDF_KLABEL)) 983 wd->sc_flags &= ~WDF_LOADED; 984 985 wd->atabus->ata_delref(wd->drvp); 986 } 987 988 (void) lockmgr(&wd->sc_dk.dk_openlock, LK_RELEASE, NULL); 989 return 0; 990 } 991 992 void 993 wdgetdefaultlabel(struct wd_softc *wd, struct disklabel *lp) 994 { 995 996 ATADEBUG_PRINT(("wdgetdefaultlabel\n"), DEBUG_FUNCS); 997 memset(lp, 0, sizeof(struct disklabel)); 998 999 lp->d_secsize = DEV_BSIZE; 1000 lp->d_ntracks = wd->sc_params.atap_heads; 1001 lp->d_nsectors = wd->sc_params.atap_sectors; 1002 lp->d_ncylinders = (wd->sc_flags & WDF_LBA) ? wd->sc_capacity / 1003 (wd->sc_params.atap_heads * wd->sc_params.atap_sectors) : 1004 wd->sc_params.atap_cylinders; 1005 lp->d_secpercyl = lp->d_ntracks * lp->d_nsectors; 1006 1007 if (strcmp(wd->sc_params.atap_model, "ST506") == 0) 1008 lp->d_type = DTYPE_ST506; 1009 else 1010 lp->d_type = DTYPE_ESDI; 1011 1012 strncpy(lp->d_typename, wd->sc_params.atap_model, 16); 1013 strncpy(lp->d_packname, "fictitious", 16); 1014 if (wd->sc_capacity > UINT32_MAX) 1015 lp->d_secperunit = UINT32_MAX; 1016 else 1017 lp->d_secperunit = wd->sc_capacity; 1018 lp->d_rpm = 3600; 1019 lp->d_interleave = 1; 1020 lp->d_flags = 0; 1021 1022 lp->d_partitions[RAW_PART].p_offset = 0; 1023 lp->d_partitions[RAW_PART].p_size = 1024 lp->d_secperunit * (lp->d_secsize / DEV_BSIZE); 1025 lp->d_partitions[RAW_PART].p_fstype = FS_UNUSED; 1026 lp->d_npartitions = RAW_PART + 1; 1027 1028 lp->d_magic = DISKMAGIC; 1029 lp->d_magic2 = DISKMAGIC; 1030 lp->d_checksum = dkcksum(lp); 1031 } 1032 1033 /* 1034 * Fabricate a default disk label, and try to read the correct one. 1035 */ 1036 void 1037 wdgetdisklabel(struct wd_softc *wd) 1038 { 1039 struct disklabel *lp = wd->sc_dk.dk_label; 1040 const char *errstring; 1041 int s; 1042 1043 ATADEBUG_PRINT(("wdgetdisklabel\n"), DEBUG_FUNCS); 1044 1045 memset(wd->sc_dk.dk_cpulabel, 0, sizeof(struct cpu_disklabel)); 1046 1047 wdgetdefaultlabel(wd, lp); 1048 1049 wd->sc_badsect[0] = -1; 1050 1051 if (wd->drvp->state > RESET) { 1052 s = splbio(); 1053 wd->drvp->drive_flags |= DRIVE_RESET; 1054 splx(s); 1055 } 1056 errstring = readdisklabel(MAKEWDDEV(0, wd->sc_dev.dv_unit, RAW_PART), 1057 wdstrategy, lp, wd->sc_dk.dk_cpulabel); 1058 if (errstring) { 1059 /* 1060 * This probably happened because the drive's default 1061 * geometry doesn't match the DOS geometry. We 1062 * assume the DOS geometry is now in the label and try 1063 * again. XXX This is a kluge. 1064 */ 1065 if (wd->drvp->state > RESET) { 1066 s = splbio(); 1067 wd->drvp->drive_flags |= DRIVE_RESET; 1068 splx(s); 1069 } 1070 errstring = readdisklabel(MAKEWDDEV(0, wd->sc_dev.dv_unit, 1071 RAW_PART), wdstrategy, lp, wd->sc_dk.dk_cpulabel); 1072 } 1073 if (errstring) { 1074 printf("%s: %s\n", wd->sc_dev.dv_xname, errstring); 1075 return; 1076 } 1077 1078 if (wd->drvp->state > RESET) { 1079 s = splbio(); 1080 wd->drvp->drive_flags |= DRIVE_RESET; 1081 splx(s); 1082 } 1083 #ifdef HAS_BAD144_HANDLING 1084 if ((lp->d_flags & D_BADSECT) != 0) 1085 bad144intern(wd); 1086 #endif 1087 } 1088 1089 void 1090 wdperror(const struct wd_softc *wd) 1091 { 1092 static const char *const errstr0_3[] = {"address mark not found", 1093 "track 0 not found", "aborted command", "media change requested", 1094 "id not found", "media changed", "uncorrectable data error", 1095 "bad block detected"}; 1096 static const char *const errstr4_5[] = { 1097 "obsolete (address mark not found)", 1098 "no media/write protected", "aborted command", 1099 "media change requested", "id not found", "media changed", 1100 "uncorrectable data error", "interface CRC error"}; 1101 const char *const *errstr; 1102 int i; 1103 char *sep = ""; 1104 1105 const char *devname = wd->sc_dev.dv_xname; 1106 struct ata_drive_datas *drvp = wd->drvp; 1107 int errno = wd->sc_wdc_bio.r_error; 1108 1109 if (drvp->ata_vers >= 4) 1110 errstr = errstr4_5; 1111 else 1112 errstr = errstr0_3; 1113 1114 printf("%s: (", devname); 1115 1116 if (errno == 0) 1117 printf("error not notified"); 1118 1119 for (i = 0; i < 8; i++) { 1120 if (errno & (1 << i)) { 1121 printf("%s%s", sep, errstr[i]); 1122 sep = ", "; 1123 } 1124 } 1125 printf(")\n"); 1126 } 1127 1128 int 1129 wdioctl(dev_t dev, u_long xfer, caddr_t addr, int flag, struct proc *p) 1130 { 1131 struct wd_softc *wd = device_lookup(&wd_cd, WDUNIT(dev)); 1132 int error = 0, s; 1133 #ifdef __HAVE_OLD_DISKLABEL 1134 struct disklabel *newlabel = NULL; 1135 #endif 1136 1137 ATADEBUG_PRINT(("wdioctl\n"), DEBUG_FUNCS); 1138 1139 if ((wd->sc_flags & WDF_LOADED) == 0) 1140 return EIO; 1141 1142 switch (xfer) { 1143 #ifdef HAS_BAD144_HANDLING 1144 case DIOCSBAD: 1145 if ((flag & FWRITE) == 0) 1146 return EBADF; 1147 wd->sc_dk.dk_cpulabel->bad = *(struct dkbad *)addr; 1148 wd->sc_dk.dk_label->d_flags |= D_BADSECT; 1149 bad144intern(wd); 1150 return 0; 1151 #endif 1152 #ifdef WD_SOFTBADSECT 1153 case DIOCBSLIST : 1154 { 1155 u_int32_t count, missing, skip; 1156 struct disk_badsecinfo dbsi; 1157 struct disk_badsectors *dbs; 1158 size_t available; 1159 caddr_t laddr; 1160 1161 dbsi = *(struct disk_badsecinfo *)addr; 1162 missing = wd->sc_bscount; 1163 count = 0; 1164 available = dbsi.dbsi_bufsize; 1165 skip = dbsi.dbsi_skip; 1166 laddr = dbsi.dbsi_buffer; 1167 1168 /* 1169 * We start this loop with the expectation that all of the 1170 * entries will be missed and decrement this counter each 1171 * time we either skip over one (already copied out) or 1172 * we actually copy it back to user space. The structs 1173 * holding the bad sector information are copied directly 1174 * back to user space whilst the summary is returned via 1175 * the struct passed in via the ioctl. 1176 */ 1177 SLIST_FOREACH(dbs, &wd->sc_bslist, dbs_next) { 1178 if (skip > 0) { 1179 missing--; 1180 skip--; 1181 continue; 1182 } 1183 if (available < sizeof(*dbs)) 1184 break; 1185 available -= sizeof(*dbs); 1186 copyout(dbs, laddr, sizeof(*dbs)); 1187 laddr += sizeof(*dbs); 1188 missing--; 1189 count++; 1190 } 1191 dbsi.dbsi_left = missing; 1192 dbsi.dbsi_copied = count; 1193 *(struct disk_badsecinfo *)addr = dbsi; 1194 return 0; 1195 } 1196 1197 case DIOCBSFLUSH : 1198 /* Clean out the bad sector list */ 1199 while (!SLIST_EMPTY(&wd->sc_bslist)) { 1200 void *head = SLIST_FIRST(&wd->sc_bslist); 1201 SLIST_REMOVE_HEAD(&wd->sc_bslist, dbs_next); 1202 free(head, M_TEMP); 1203 } 1204 wd->sc_bscount = 0; 1205 return 0; 1206 #endif 1207 case DIOCGDINFO: 1208 *(struct disklabel *)addr = *(wd->sc_dk.dk_label); 1209 return 0; 1210 #ifdef __HAVE_OLD_DISKLABEL 1211 case ODIOCGDINFO: 1212 newlabel = malloc(sizeof *newlabel, M_TEMP, M_WAITOK); 1213 if (newlabel == NULL) 1214 return EIO; 1215 *newlabel = *(wd->sc_dk.dk_label); 1216 if (newlabel->d_npartitions <= OLDMAXPARTITIONS) 1217 memcpy(addr, newlabel, sizeof (struct olddisklabel)); 1218 else 1219 error = ENOTTY; 1220 free(newlabel, M_TEMP); 1221 return error; 1222 #endif 1223 1224 case DIOCGPART: 1225 ((struct partinfo *)addr)->disklab = wd->sc_dk.dk_label; 1226 ((struct partinfo *)addr)->part = 1227 &wd->sc_dk.dk_label->d_partitions[WDPART(dev)]; 1228 return 0; 1229 1230 case DIOCWDINFO: 1231 case DIOCSDINFO: 1232 #ifdef __HAVE_OLD_DISKLABEL 1233 case ODIOCWDINFO: 1234 case ODIOCSDINFO: 1235 #endif 1236 { 1237 struct disklabel *lp; 1238 1239 if ((flag & FWRITE) == 0) 1240 return EBADF; 1241 1242 #ifdef __HAVE_OLD_DISKLABEL 1243 if (xfer == ODIOCSDINFO || xfer == ODIOCWDINFO) { 1244 newlabel = malloc(sizeof *newlabel, M_TEMP, M_WAITOK); 1245 if (newlabel == NULL) 1246 return EIO; 1247 memset(newlabel, 0, sizeof newlabel); 1248 memcpy(newlabel, addr, sizeof (struct olddisklabel)); 1249 lp = newlabel; 1250 } else 1251 #endif 1252 lp = (struct disklabel *)addr; 1253 1254 if ((error = lockmgr(&wd->sc_dk.dk_openlock, LK_EXCLUSIVE, 1255 NULL)) != 0) 1256 goto bad; 1257 wd->sc_flags |= WDF_LABELLING; 1258 1259 error = setdisklabel(wd->sc_dk.dk_label, 1260 lp, /*wd->sc_dk.dk_openmask : */0, 1261 wd->sc_dk.dk_cpulabel); 1262 if (error == 0) { 1263 if (wd->drvp->state > RESET) { 1264 s = splbio(); 1265 wd->drvp->drive_flags |= DRIVE_RESET; 1266 splx(s); 1267 } 1268 if (xfer == DIOCWDINFO 1269 #ifdef __HAVE_OLD_DISKLABEL 1270 || xfer == ODIOCWDINFO 1271 #endif 1272 ) 1273 error = writedisklabel(WDLABELDEV(dev), 1274 wdstrategy, wd->sc_dk.dk_label, 1275 wd->sc_dk.dk_cpulabel); 1276 } 1277 1278 wd->sc_flags &= ~WDF_LABELLING; 1279 (void) lockmgr(&wd->sc_dk.dk_openlock, LK_RELEASE, NULL); 1280 bad: 1281 #ifdef __HAVE_OLD_DISKLABEL 1282 if (newlabel != NULL) 1283 free(newlabel, M_TEMP); 1284 #endif 1285 return error; 1286 } 1287 1288 case DIOCKLABEL: 1289 if (*(int *)addr) 1290 wd->sc_flags |= WDF_KLABEL; 1291 else 1292 wd->sc_flags &= ~WDF_KLABEL; 1293 return 0; 1294 1295 case DIOCWLABEL: 1296 if ((flag & FWRITE) == 0) 1297 return EBADF; 1298 if (*(int *)addr) 1299 wd->sc_flags |= WDF_WLABEL; 1300 else 1301 wd->sc_flags &= ~WDF_WLABEL; 1302 return 0; 1303 1304 case DIOCGDEFLABEL: 1305 wdgetdefaultlabel(wd, (struct disklabel *)addr); 1306 return 0; 1307 #ifdef __HAVE_OLD_DISKLABEL 1308 case ODIOCGDEFLABEL: 1309 newlabel = malloc(sizeof *newlabel, M_TEMP, M_WAITOK); 1310 if (newlabel == NULL) 1311 return EIO; 1312 wdgetdefaultlabel(wd, newlabel); 1313 if (newlabel->d_npartitions <= OLDMAXPARTITIONS) 1314 memcpy(addr, &newlabel, sizeof (struct olddisklabel)); 1315 else 1316 error = ENOTTY; 1317 free(newlabel, M_TEMP); 1318 return error; 1319 #endif 1320 1321 #ifdef notyet 1322 case DIOCWFORMAT: 1323 if ((flag & FWRITE) == 0) 1324 return EBADF; 1325 { 1326 register struct format_op *fop; 1327 struct iovec aiov; 1328 struct uio auio; 1329 1330 fop = (struct format_op *)addr; 1331 aiov.iov_base = fop->df_buf; 1332 aiov.iov_len = fop->df_count; 1333 auio.uio_iov = &aiov; 1334 auio.uio_iovcnt = 1; 1335 auio.uio_resid = fop->df_count; 1336 auio.uio_segflg = 0; 1337 auio.uio_offset = 1338 fop->df_startblk * wd->sc_dk.dk_label->d_secsize; 1339 auio.uio_procp = p; 1340 error = physio(wdformat, NULL, dev, B_WRITE, minphys, 1341 &auio); 1342 fop->df_count -= auio.uio_resid; 1343 fop->df_reg[0] = wdc->sc_status; 1344 fop->df_reg[1] = wdc->sc_error; 1345 return error; 1346 } 1347 #endif 1348 case DIOCGCACHE: 1349 return wd_getcache(wd, (int *)addr); 1350 1351 case DIOCSCACHE: 1352 return wd_setcache(wd, *(int *)addr); 1353 1354 case DIOCCACHESYNC: 1355 return wd_flushcache(wd, AT_WAIT); 1356 1357 case ATAIOCCOMMAND: 1358 /* 1359 * Make sure this command is (relatively) safe first 1360 */ 1361 if ((((atareq_t *) addr)->flags & ATACMD_READ) == 0 && 1362 (flag & FWRITE) == 0) 1363 return (EBADF); 1364 { 1365 struct wd_ioctl *wi; 1366 atareq_t *atareq = (atareq_t *) addr; 1367 int error; 1368 1369 wi = wi_get(); 1370 wi->wi_softc = wd; 1371 wi->wi_atareq = *atareq; 1372 1373 if (atareq->datalen && atareq->flags & 1374 (ATACMD_READ | ATACMD_WRITE)) { 1375 wi->wi_iov.iov_base = atareq->databuf; 1376 wi->wi_iov.iov_len = atareq->datalen; 1377 wi->wi_uio.uio_iov = &wi->wi_iov; 1378 wi->wi_uio.uio_iovcnt = 1; 1379 wi->wi_uio.uio_resid = atareq->datalen; 1380 wi->wi_uio.uio_offset = 0; 1381 wi->wi_uio.uio_segflg = UIO_USERSPACE; 1382 wi->wi_uio.uio_rw = 1383 (atareq->flags & ATACMD_READ) ? B_READ : B_WRITE; 1384 wi->wi_uio.uio_procp = p; 1385 error = physio(wdioctlstrategy, &wi->wi_bp, dev, 1386 (atareq->flags & ATACMD_READ) ? B_READ : B_WRITE, 1387 minphys, &wi->wi_uio); 1388 } else { 1389 /* No need to call physio if we don't have any 1390 user data */ 1391 wi->wi_bp.b_flags = 0; 1392 wi->wi_bp.b_data = 0; 1393 wi->wi_bp.b_bcount = 0; 1394 wi->wi_bp.b_dev = 0; 1395 wi->wi_bp.b_proc = p; 1396 wdioctlstrategy(&wi->wi_bp); 1397 error = wi->wi_bp.b_error; 1398 } 1399 *atareq = wi->wi_atareq; 1400 wi_free(wi); 1401 return(error); 1402 } 1403 1404 case DIOCAWEDGE: 1405 { 1406 struct dkwedge_info *dkw = (void *) addr; 1407 1408 if ((flag & FWRITE) == 0) 1409 return (EBADF); 1410 1411 /* If the ioctl happens here, the parent is us. */ 1412 strcpy(dkw->dkw_parent, wd->sc_dev.dv_xname); 1413 return (dkwedge_add(dkw)); 1414 } 1415 1416 case DIOCDWEDGE: 1417 { 1418 struct dkwedge_info *dkw = (void *) addr; 1419 1420 if ((flag & FWRITE) == 0) 1421 return (EBADF); 1422 1423 /* If the ioctl happens here, the parent is us. */ 1424 strcpy(dkw->dkw_parent, wd->sc_dev.dv_xname); 1425 return (dkwedge_del(dkw)); 1426 } 1427 1428 case DIOCLWEDGES: 1429 { 1430 struct dkwedge_list *dkwl = (void *) addr; 1431 1432 return (dkwedge_list(&wd->sc_dk, dkwl, p)); 1433 } 1434 1435 default: 1436 return ENOTTY; 1437 } 1438 1439 #ifdef DIAGNOSTIC 1440 panic("wdioctl: impossible"); 1441 #endif 1442 } 1443 1444 #ifdef B_FORMAT 1445 int 1446 wdformat(struct buf *bp) 1447 { 1448 1449 bp->b_flags |= B_FORMAT; 1450 return wdstrategy(bp); 1451 } 1452 #endif 1453 1454 int 1455 wdsize(dev_t dev) 1456 { 1457 struct wd_softc *wd; 1458 int part, omask; 1459 int size; 1460 1461 ATADEBUG_PRINT(("wdsize\n"), DEBUG_FUNCS); 1462 1463 wd = device_lookup(&wd_cd, WDUNIT(dev)); 1464 if (wd == NULL) 1465 return (-1); 1466 1467 part = WDPART(dev); 1468 omask = wd->sc_dk.dk_openmask & (1 << part); 1469 1470 if (omask == 0 && wdopen(dev, 0, S_IFBLK, NULL) != 0) 1471 return (-1); 1472 if (wd->sc_dk.dk_label->d_partitions[part].p_fstype != FS_SWAP) 1473 size = -1; 1474 else 1475 size = wd->sc_dk.dk_label->d_partitions[part].p_size * 1476 (wd->sc_dk.dk_label->d_secsize / DEV_BSIZE); 1477 if (omask == 0 && wdclose(dev, 0, S_IFBLK, NULL) != 0) 1478 return (-1); 1479 return (size); 1480 } 1481 1482 /* #define WD_DUMP_NOT_TRUSTED if you just want to watch */ 1483 static int wddoingadump = 0; 1484 static int wddumprecalibrated = 0; 1485 static int wddumpmulti = 1; 1486 1487 /* 1488 * Dump core after a system crash. 1489 */ 1490 int 1491 wddump(dev_t dev, daddr_t blkno, caddr_t va, size_t size) 1492 { 1493 struct wd_softc *wd; /* disk unit to do the I/O */ 1494 struct disklabel *lp; /* disk's disklabel */ 1495 int part, err; 1496 int nblks; /* total number of sectors left to write */ 1497 1498 /* Check if recursive dump; if so, punt. */ 1499 if (wddoingadump) 1500 return EFAULT; 1501 wddoingadump = 1; 1502 1503 wd = device_lookup(&wd_cd, WDUNIT(dev)); 1504 if (wd == NULL) 1505 return (ENXIO); 1506 1507 part = WDPART(dev); 1508 1509 /* Convert to disk sectors. Request must be a multiple of size. */ 1510 lp = wd->sc_dk.dk_label; 1511 if ((size % lp->d_secsize) != 0) 1512 return EFAULT; 1513 nblks = size / lp->d_secsize; 1514 blkno = blkno / (lp->d_secsize / DEV_BSIZE); 1515 1516 /* Check transfer bounds against partition size. */ 1517 if ((blkno < 0) || ((blkno + nblks) > lp->d_partitions[part].p_size)) 1518 return EINVAL; 1519 1520 /* Offset block number to start of partition. */ 1521 blkno += lp->d_partitions[part].p_offset; 1522 1523 /* Recalibrate, if first dump transfer. */ 1524 if (wddumprecalibrated == 0) { 1525 wddumpmulti = wd->sc_multi; 1526 wddumprecalibrated = 1; 1527 (*wd->atabus->ata_reset_drive)(wd->drvp, 1528 AT_POLL | AT_RST_EMERG); 1529 wd->drvp->state = RESET; 1530 } 1531 1532 while (nblks > 0) { 1533 wd->sc_bp = NULL; 1534 wd->sc_wdc_bio.blkno = blkno; 1535 wd->sc_wdc_bio.flags = ATA_POLL; 1536 if (wd->sc_flags & WDF_LBA48 && 1537 (blkno > LBA48_THRESHOLD || 1538 (wd->sc_quirks & WD_QUIRK_FORCE_LBA48) != 0)) 1539 wd->sc_wdc_bio.flags |= ATA_LBA48; 1540 if (wd->sc_flags & WDF_LBA) 1541 wd->sc_wdc_bio.flags |= ATA_LBA; 1542 wd->sc_wdc_bio.bcount = 1543 min(nblks, wddumpmulti) * lp->d_secsize; 1544 wd->sc_wdc_bio.databuf = va; 1545 #ifndef WD_DUMP_NOT_TRUSTED 1546 switch (wd->atabus->ata_bio(wd->drvp, &wd->sc_wdc_bio)) { 1547 case ATACMD_TRY_AGAIN: 1548 panic("wddump: try again"); 1549 break; 1550 case ATACMD_QUEUED: 1551 panic("wddump: polled command has been queued"); 1552 break; 1553 case ATACMD_COMPLETE: 1554 break; 1555 } 1556 switch(wd->sc_wdc_bio.error) { 1557 case TIMEOUT: 1558 printf("wddump: device timed out"); 1559 err = EIO; 1560 break; 1561 case ERR_DF: 1562 printf("wddump: drive fault"); 1563 err = EIO; 1564 break; 1565 case ERR_DMA: 1566 printf("wddump: DMA error"); 1567 err = EIO; 1568 break; 1569 case ERROR: 1570 printf("wddump: "); 1571 wdperror(wd); 1572 err = EIO; 1573 break; 1574 case NOERROR: 1575 err = 0; 1576 break; 1577 default: 1578 panic("wddump: unknown error type"); 1579 } 1580 if (err != 0) { 1581 printf("\n"); 1582 return err; 1583 } 1584 #else /* WD_DUMP_NOT_TRUSTED */ 1585 /* Let's just talk about this first... */ 1586 printf("wd%d: dump addr 0x%x, cylin %d, head %d, sector %d\n", 1587 unit, va, cylin, head, sector); 1588 delay(500 * 1000); /* half a second */ 1589 #endif 1590 1591 /* update block count */ 1592 nblks -= min(nblks, wddumpmulti); 1593 blkno += min(nblks, wddumpmulti); 1594 va += min(nblks, wddumpmulti) * lp->d_secsize; 1595 } 1596 1597 wddoingadump = 0; 1598 return 0; 1599 } 1600 1601 #ifdef HAS_BAD144_HANDLING 1602 /* 1603 * Internalize the bad sector table. 1604 */ 1605 void 1606 bad144intern(struct wd_softc *wd) 1607 { 1608 struct dkbad *bt = &wd->sc_dk.dk_cpulabel->bad; 1609 struct disklabel *lp = wd->sc_dk.dk_label; 1610 int i = 0; 1611 1612 ATADEBUG_PRINT(("bad144intern\n"), DEBUG_XFERS); 1613 1614 for (; i < NBT_BAD; i++) { 1615 if (bt->bt_bad[i].bt_cyl == 0xffff) 1616 break; 1617 wd->sc_badsect[i] = 1618 bt->bt_bad[i].bt_cyl * lp->d_secpercyl + 1619 (bt->bt_bad[i].bt_trksec >> 8) * lp->d_nsectors + 1620 (bt->bt_bad[i].bt_trksec & 0xff); 1621 } 1622 for (; i < NBT_BAD+1; i++) 1623 wd->sc_badsect[i] = -1; 1624 } 1625 #endif 1626 1627 int 1628 wd_get_params(struct wd_softc *wd, u_int8_t flags, struct ataparams *params) 1629 { 1630 switch (wd->atabus->ata_get_params(wd->drvp, flags, params)) { 1631 case CMD_AGAIN: 1632 return 1; 1633 case CMD_ERR: 1634 /* 1635 * We `know' there's a drive here; just assume it's old. 1636 * This geometry is only used to read the MBR and print a 1637 * (false) attach message. 1638 */ 1639 strncpy(params->atap_model, "ST506", 1640 sizeof params->atap_model); 1641 params->atap_config = ATA_CFG_FIXED; 1642 params->atap_cylinders = 1024; 1643 params->atap_heads = 8; 1644 params->atap_sectors = 17; 1645 params->atap_multi = 1; 1646 params->atap_capabilities1 = params->atap_capabilities2 = 0; 1647 wd->drvp->ata_vers = -1; /* Mark it as pre-ATA */ 1648 return 0; 1649 case CMD_OK: 1650 return 0; 1651 default: 1652 panic("wd_get_params: bad return code from ata_get_params"); 1653 /* NOTREACHED */ 1654 } 1655 } 1656 1657 int 1658 wd_getcache(struct wd_softc *wd, int *bitsp) 1659 { 1660 struct ataparams params; 1661 1662 if (wd_get_params(wd, AT_WAIT, ¶ms) != 0) 1663 return EIO; 1664 if (params.atap_cmd_set1 == 0x0000 || 1665 params.atap_cmd_set1 == 0xffff || 1666 (params.atap_cmd_set1 & WDC_CMD1_CACHE) == 0) { 1667 *bitsp = 0; 1668 return 0; 1669 } 1670 *bitsp = DKCACHE_WCHANGE | DKCACHE_READ; 1671 if (params.atap_cmd1_en & WDC_CMD1_CACHE) 1672 *bitsp |= DKCACHE_WRITE; 1673 1674 return 0; 1675 } 1676 1677 const char at_errbits[] = "\20\10ERROR\11TIMEOU\12DF"; 1678 1679 int 1680 wd_setcache(struct wd_softc *wd, int bits) 1681 { 1682 struct ataparams params; 1683 struct ata_command ata_c; 1684 1685 if (wd_get_params(wd, AT_WAIT, ¶ms) != 0) 1686 return EIO; 1687 1688 if (params.atap_cmd_set1 == 0x0000 || 1689 params.atap_cmd_set1 == 0xffff || 1690 (params.atap_cmd_set1 & WDC_CMD1_CACHE) == 0) 1691 return EOPNOTSUPP; 1692 1693 if ((bits & DKCACHE_READ) == 0 || 1694 (bits & DKCACHE_SAVE) != 0) 1695 return EOPNOTSUPP; 1696 1697 memset(&ata_c, 0, sizeof(struct ata_command)); 1698 ata_c.r_command = SET_FEATURES; 1699 ata_c.r_st_bmask = 0; 1700 ata_c.r_st_pmask = 0; 1701 ata_c.timeout = 30000; /* 30s timeout */ 1702 ata_c.flags = AT_WAIT; 1703 if (bits & DKCACHE_WRITE) 1704 ata_c.r_features = WDSF_WRITE_CACHE_EN; 1705 else 1706 ata_c.r_features = WDSF_WRITE_CACHE_DS; 1707 if (wd->atabus->ata_exec_command(wd->drvp, &ata_c) != ATACMD_COMPLETE) { 1708 printf("%s: wd_setcache command not complete\n", 1709 wd->sc_dev.dv_xname); 1710 return EIO; 1711 } 1712 if (ata_c.flags & (AT_ERROR | AT_TIMEOU | AT_DF)) { 1713 char sbuf[sizeof(at_errbits) + 64]; 1714 bitmask_snprintf(ata_c.flags, at_errbits, sbuf, sizeof(sbuf)); 1715 printf("%s: wd_setcache: status=%s\n", wd->sc_dev.dv_xname, 1716 sbuf); 1717 return EIO; 1718 } 1719 return 0; 1720 } 1721 1722 int 1723 wd_standby(struct wd_softc *wd, int flags) 1724 { 1725 struct ata_command ata_c; 1726 1727 memset(&ata_c, 0, sizeof(struct ata_command)); 1728 ata_c.r_command = WDCC_STANDBY_IMMED; 1729 ata_c.r_st_bmask = WDCS_DRDY; 1730 ata_c.r_st_pmask = WDCS_DRDY; 1731 ata_c.flags = flags; 1732 ata_c.timeout = 30000; /* 30s timeout */ 1733 if (wd->atabus->ata_exec_command(wd->drvp, &ata_c) != ATACMD_COMPLETE) { 1734 printf("%s: standby immediate command didn't complete\n", 1735 wd->sc_dev.dv_xname); 1736 return EIO; 1737 } 1738 if (ata_c.flags & AT_ERROR) { 1739 if (ata_c.r_error == WDCE_ABRT) /* command not supported */ 1740 return ENODEV; 1741 } 1742 if (ata_c.flags & (AT_ERROR | AT_TIMEOU | AT_DF)) { 1743 char sbuf[sizeof(at_errbits) + 64]; 1744 bitmask_snprintf(ata_c.flags, at_errbits, sbuf, sizeof(sbuf)); 1745 printf("%s: wd_standby: status=%s\n", wd->sc_dev.dv_xname, 1746 sbuf); 1747 return EIO; 1748 } 1749 return 0; 1750 } 1751 1752 int 1753 wd_flushcache(struct wd_softc *wd, int flags) 1754 { 1755 struct ata_command ata_c; 1756 1757 /* 1758 * WDCC_FLUSHCACHE is here since ATA-4, but some drives report 1759 * only ATA-2 and still support it. 1760 */ 1761 if (wd->drvp->ata_vers < 4 && 1762 ((wd->sc_params.atap_cmd_set2 & WDC_CMD2_FC) == 0 || 1763 wd->sc_params.atap_cmd_set2 == 0xffff)) 1764 return ENODEV; 1765 memset(&ata_c, 0, sizeof(struct ata_command)); 1766 if ((wd->sc_params.atap_cmd2_en & ATA_CMD2_LBA48) != 0 && 1767 (wd->sc_params.atap_cmd2_en & ATA_CMD2_FCE) != 0) 1768 ata_c.r_command = WDCC_FLUSHCACHE_EXT; 1769 else 1770 ata_c.r_command = WDCC_FLUSHCACHE; 1771 ata_c.r_st_bmask = WDCS_DRDY; 1772 ata_c.r_st_pmask = WDCS_DRDY; 1773 ata_c.flags = flags; 1774 ata_c.timeout = 30000; /* 30s timeout */ 1775 if (wd->atabus->ata_exec_command(wd->drvp, &ata_c) != ATACMD_COMPLETE) { 1776 printf("%s: flush cache command didn't complete\n", 1777 wd->sc_dev.dv_xname); 1778 return EIO; 1779 } 1780 if (ata_c.flags & AT_ERROR) { 1781 if (ata_c.r_error == WDCE_ABRT) /* command not supported */ 1782 return ENODEV; 1783 } 1784 if (ata_c.flags & (AT_ERROR | AT_TIMEOU | AT_DF)) { 1785 char sbuf[sizeof(at_errbits) + 64]; 1786 bitmask_snprintf(ata_c.flags, at_errbits, sbuf, sizeof(sbuf)); 1787 printf("%s: wd_flushcache: status=%s\n", wd->sc_dev.dv_xname, 1788 sbuf); 1789 return EIO; 1790 } 1791 return 0; 1792 } 1793 1794 void 1795 wd_shutdown(void *arg) 1796 { 1797 struct wd_softc *wd = arg; 1798 wd_flushcache(wd, AT_POLL); 1799 } 1800 1801 /* 1802 * Allocate space for a ioctl queue structure. Mostly taken from 1803 * scsipi_ioctl.c 1804 */ 1805 struct wd_ioctl * 1806 wi_get(void) 1807 { 1808 struct wd_ioctl *wi; 1809 int s; 1810 1811 wi = malloc(sizeof(struct wd_ioctl), M_TEMP, M_WAITOK|M_ZERO); 1812 simple_lock_init(&wi->wi_bp.b_interlock); 1813 s = splbio(); 1814 LIST_INSERT_HEAD(&wi_head, wi, wi_list); 1815 splx(s); 1816 return (wi); 1817 } 1818 1819 /* 1820 * Free an ioctl structure and remove it from our list 1821 */ 1822 1823 void 1824 wi_free(struct wd_ioctl *wi) 1825 { 1826 int s; 1827 1828 s = splbio(); 1829 LIST_REMOVE(wi, wi_list); 1830 splx(s); 1831 free(wi, M_TEMP); 1832 } 1833 1834 /* 1835 * Find a wd_ioctl structure based on the struct buf. 1836 */ 1837 1838 struct wd_ioctl * 1839 wi_find(struct buf *bp) 1840 { 1841 struct wd_ioctl *wi; 1842 int s; 1843 1844 s = splbio(); 1845 for (wi = wi_head.lh_first; wi != 0; wi = wi->wi_list.le_next) 1846 if (bp == &wi->wi_bp) 1847 break; 1848 splx(s); 1849 return (wi); 1850 } 1851 1852 /* 1853 * Ioctl pseudo strategy routine 1854 * 1855 * This is mostly stolen from scsipi_ioctl.c:scsistrategy(). What 1856 * happens here is: 1857 * 1858 * - wdioctl() queues a wd_ioctl structure. 1859 * 1860 * - wdioctl() calls physio/wdioctlstrategy based on whether or not 1861 * user space I/O is required. If physio() is called, physio() eventually 1862 * calls wdioctlstrategy(). 1863 * 1864 * - In either case, wdioctlstrategy() calls wd->atabus->ata_exec_command() 1865 * to perform the actual command 1866 * 1867 * The reason for the use of the pseudo strategy routine is because 1868 * when doing I/O to/from user space, physio _really_ wants to be in 1869 * the loop. We could put the entire buffer into the ioctl request 1870 * structure, but that won't scale if we want to do things like download 1871 * microcode. 1872 */ 1873 1874 void 1875 wdioctlstrategy(struct buf *bp) 1876 { 1877 struct wd_ioctl *wi; 1878 struct ata_command ata_c; 1879 int error = 0; 1880 1881 wi = wi_find(bp); 1882 if (wi == NULL) { 1883 printf("user_strat: No ioctl\n"); 1884 error = EINVAL; 1885 goto bad; 1886 } 1887 1888 memset(&ata_c, 0, sizeof(ata_c)); 1889 1890 /* 1891 * Abort if physio broke up the transfer 1892 */ 1893 1894 if (bp->b_bcount != wi->wi_atareq.datalen) { 1895 printf("physio split wd ioctl request... cannot proceed\n"); 1896 error = EIO; 1897 goto bad; 1898 } 1899 1900 /* 1901 * Abort if we didn't get a buffer size that was a multiple of 1902 * our sector size (or was larger than NBBY) 1903 */ 1904 1905 if ((bp->b_bcount % wi->wi_softc->sc_dk.dk_label->d_secsize) != 0 || 1906 (bp->b_bcount / wi->wi_softc->sc_dk.dk_label->d_secsize) >= 1907 (1 << NBBY)) { 1908 error = EINVAL; 1909 goto bad; 1910 } 1911 1912 /* 1913 * Make sure a timeout was supplied in the ioctl request 1914 */ 1915 1916 if (wi->wi_atareq.timeout == 0) { 1917 error = EINVAL; 1918 goto bad; 1919 } 1920 1921 if (wi->wi_atareq.flags & ATACMD_READ) 1922 ata_c.flags |= AT_READ; 1923 else if (wi->wi_atareq.flags & ATACMD_WRITE) 1924 ata_c.flags |= AT_WRITE; 1925 1926 if (wi->wi_atareq.flags & ATACMD_READREG) 1927 ata_c.flags |= AT_READREG; 1928 1929 ata_c.flags |= AT_WAIT; 1930 1931 ata_c.timeout = wi->wi_atareq.timeout; 1932 ata_c.r_command = wi->wi_atareq.command; 1933 ata_c.r_head = wi->wi_atareq.head & 0x0f; 1934 ata_c.r_cyl = wi->wi_atareq.cylinder; 1935 ata_c.r_sector = wi->wi_atareq.sec_num; 1936 ata_c.r_count = wi->wi_atareq.sec_count; 1937 ata_c.r_features = wi->wi_atareq.features; 1938 ata_c.r_st_bmask = WDCS_DRDY; 1939 ata_c.r_st_pmask = WDCS_DRDY; 1940 ata_c.data = wi->wi_bp.b_data; 1941 ata_c.bcount = wi->wi_bp.b_bcount; 1942 1943 if (wi->wi_softc->atabus->ata_exec_command(wi->wi_softc->drvp, &ata_c) 1944 != ATACMD_COMPLETE) { 1945 wi->wi_atareq.retsts = ATACMD_ERROR; 1946 goto bad; 1947 } 1948 1949 if (ata_c.flags & (AT_ERROR | AT_TIMEOU | AT_DF)) { 1950 if (ata_c.flags & AT_ERROR) { 1951 wi->wi_atareq.retsts = ATACMD_ERROR; 1952 wi->wi_atareq.error = ata_c.r_error; 1953 } else if (ata_c.flags & AT_DF) 1954 wi->wi_atareq.retsts = ATACMD_DF; 1955 else 1956 wi->wi_atareq.retsts = ATACMD_TIMEOUT; 1957 } else { 1958 wi->wi_atareq.retsts = ATACMD_OK; 1959 if (wi->wi_atareq.flags & ATACMD_READREG) { 1960 wi->wi_atareq.head = ata_c.r_head ; 1961 wi->wi_atareq.cylinder = ata_c.r_cyl; 1962 wi->wi_atareq.sec_num = ata_c.r_sector; 1963 wi->wi_atareq.sec_count = ata_c.r_count; 1964 wi->wi_atareq.features = ata_c.r_features; 1965 wi->wi_atareq.error = ata_c.r_error; 1966 } 1967 } 1968 1969 bp->b_error = 0; 1970 biodone(bp); 1971 return; 1972 bad: 1973 bp->b_flags |= B_ERROR; 1974 bp->b_error = error; 1975 biodone(bp); 1976 } 1977
Indexes created Mon Sep 29 03:10:08 GMT 2025