wd.c revision 1.298
1 /* $NetBSD: wd.c,v 1.298 2005/02/27 00:26:59 perry 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 1.298 2005/02/27 00:26:59 perry 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 struct buf *bp; 429 int s, bmaj, cmaj, i, mn; 430 431 /* locate the major number */ 432 bmaj = bdevsw_lookup_major(&wd_bdevsw); 433 cmaj = cdevsw_lookup_major(&wd_cdevsw); 434 435 /* Nuke the vnodes for any open instances. */ 436 for (i = 0; i < MAXPARTITIONS; i++) { 437 mn = WDMINOR(self->dv_unit, i); 438 vdevgone(bmaj, mn, mn, VBLK); 439 vdevgone(cmaj, mn, mn, VCHR); 440 } 441 442 /* Delete all of our wedges. */ 443 dkwedge_delall(&sc->sc_dk); 444 445 s = splbio(); 446 447 /* Kill off any queued buffers. */ 448 while ((bp = BUFQ_GET(&sc->sc_q)) != NULL) { 449 bp->b_error = EIO; 450 bp->b_flags |= B_ERROR; 451 bp->b_resid = bp->b_bcount; 452 biodone(bp); 453 } 454 455 bufq_free(&sc->sc_q); 456 sc->atabus->ata_killpending(sc->drvp); 457 458 splx(s); 459 460 /* Detach disk. */ 461 disk_detach(&sc->sc_dk); 462 463 #ifdef WD_SOFTBADSECT 464 /* Clean out the bad sector list */ 465 while (!SLIST_EMPTY(&sc->sc_bslist)) { 466 void *head = SLIST_FIRST(&sc->sc_bslist); 467 SLIST_REMOVE_HEAD(&sc->sc_bslist, dbs_next); 468 free(head, M_TEMP); 469 } 470 sc->sc_bscount = 0; 471 #endif 472 473 /* Get rid of the shutdown hook. */ 474 if (sc->sc_sdhook != NULL) 475 shutdownhook_disestablish(sc->sc_sdhook); 476 477 #if NRND > 0 478 /* Unhook the entropy source. */ 479 rnd_detach_source(&sc->rnd_source); 480 #endif 481 482 sc->drvp->drive_flags = 0; /* no drive any more here */ 483 484 return (0); 485 } 486 487 /* 488 * Read/write routine for a buffer. Validates the arguments and schedules the 489 * transfer. Does not wait for the transfer to complete. 490 */ 491 void 492 wdstrategy(struct buf *bp) 493 { 494 struct wd_softc *wd = device_lookup(&wd_cd, WDUNIT(bp->b_dev)); 495 struct disklabel *lp = wd->sc_dk.dk_label; 496 daddr_t blkno; 497 int s; 498 499 ATADEBUG_PRINT(("wdstrategy (%s)\n", wd->sc_dev.dv_xname), 500 DEBUG_XFERS); 501 502 /* Valid request? */ 503 if (bp->b_blkno < 0 || 504 (bp->b_bcount % lp->d_secsize) != 0 || 505 (bp->b_bcount / lp->d_secsize) >= (1 << NBBY)) { 506 bp->b_error = EINVAL; 507 goto bad; 508 } 509 510 /* If device invalidated (e.g. media change, door open), error. */ 511 if ((wd->sc_flags & WDF_LOADED) == 0) { 512 bp->b_error = EIO; 513 goto bad; 514 } 515 516 /* If it's a null transfer, return immediately. */ 517 if (bp->b_bcount == 0) 518 goto done; 519 520 /* 521 * Do bounds checking, adjust transfer. if error, process. 522 * If end of partition, just return. 523 */ 524 if (WDPART(bp->b_dev) == RAW_PART) { 525 if (bounds_check_with_mediasize(bp, DEV_BSIZE, 526 wd->sc_capacity) <= 0) 527 goto done; 528 } else { 529 if (bounds_check_with_label(&wd->sc_dk, bp, 530 (wd->sc_flags & (WDF_WLABEL|WDF_LABELLING)) != 0) <= 0) 531 goto done; 532 } 533 534 /* 535 * Now convert the block number to absolute and put it in 536 * terms of the device's logical block size. 537 */ 538 if (lp->d_secsize >= DEV_BSIZE) 539 blkno = bp->b_blkno / (lp->d_secsize / DEV_BSIZE); 540 else 541 blkno = bp->b_blkno * (DEV_BSIZE / lp->d_secsize); 542 543 if (WDPART(bp->b_dev) != RAW_PART) 544 blkno += lp->d_partitions[WDPART(bp->b_dev)].p_offset; 545 546 bp->b_rawblkno = blkno; 547 548 #ifdef WD_SOFTBADSECT 549 /* 550 * If the transfer about to be attempted contains only a block that 551 * is known to be bad then return an error for the transfer without 552 * even attempting to start a transfer up under the premis that we 553 * will just end up doing more retries for a transfer that will end 554 * up failing again. 555 * XXX:SMP - mutex required to protect with DIOCBSFLUSH 556 */ 557 if (__predict_false(!SLIST_EMPTY(&wd->sc_bslist))) { 558 struct disk_badsectors *dbs; 559 daddr_t maxblk = blkno + (bp->b_bcount >> DEV_BSHIFT) - 1; 560 561 SLIST_FOREACH(dbs, &wd->sc_bslist, dbs_next) 562 if ((dbs->dbs_min <= blkno && blkno <= dbs->dbs_max) || 563 (dbs->dbs_min <= maxblk && maxblk <= dbs->dbs_max)){ 564 bp->b_error = EIO; 565 goto bad; 566 } 567 } 568 #endif 569 570 /* Queue transfer on drive, activate drive and controller if idle. */ 571 s = splbio(); 572 BUFQ_PUT(&wd->sc_q, bp); 573 wdstart(wd); 574 splx(s); 575 return; 576 bad: 577 bp->b_flags |= B_ERROR; 578 done: 579 /* Toss transfer; we're done early. */ 580 bp->b_resid = bp->b_bcount; 581 biodone(bp); 582 } 583 584 /* 585 * Queue a drive for I/O. 586 */ 587 void 588 wdstart(void *arg) 589 { 590 struct wd_softc *wd = arg; 591 struct buf *bp = NULL; 592 593 ATADEBUG_PRINT(("wdstart %s\n", wd->sc_dev.dv_xname), 594 DEBUG_XFERS); 595 while (wd->openings > 0) { 596 597 /* Is there a buf for us ? */ 598 if ((bp = BUFQ_GET(&wd->sc_q)) == NULL) 599 return; 600 601 /* 602 * Make the command. First lock the device 603 */ 604 wd->openings--; 605 606 wd->retries = 0; 607 __wdstart(wd, bp); 608 } 609 } 610 611 static void 612 wd_split_mod15_write(struct buf *bp) 613 { 614 struct buf *obp = bp->b_private; 615 struct wd_softc *sc = wd_cd.cd_devs[DISKUNIT(obp->b_dev)]; 616 617 if (__predict_false(bp->b_flags & B_ERROR) != 0) { 618 /* 619 * Propagate the error. If this was the first half of 620 * the original transfer, make sure to account for that 621 * in the residual. 622 */ 623 if (bp->b_data == obp->b_data) 624 bp->b_resid += bp->b_bcount; 625 goto done; 626 } 627 628 /* 629 * If this was the second half of the transfer, we're all done! 630 */ 631 if (bp->b_data != obp->b_data) 632 goto done; 633 634 /* 635 * Advance the pointer to the second half and issue that command 636 * using the same opening. 637 */ 638 bp->b_flags = obp->b_flags | B_CALL; 639 bp->b_data += bp->b_bcount; 640 bp->b_blkno += (bp->b_bcount / 512); 641 bp->b_rawblkno += (bp->b_bcount / 512); 642 __wdstart(sc, bp); 643 return; 644 645 done: 646 obp->b_flags |= (bp->b_flags & (B_EINTR|B_ERROR)); 647 obp->b_error = bp->b_error; 648 obp->b_resid = bp->b_resid; 649 pool_put(&bufpool, bp); 650 biodone(obp); 651 sc->openings++; 652 /* wddone() will call wdstart() */ 653 } 654 655 void 656 __wdstart(struct wd_softc *wd, struct buf *bp) 657 { 658 659 /* 660 * Deal with the "split mod15 write" quirk. We just divide the 661 * transfer in two, doing the first half and then then second half 662 * with the same command opening. 663 * 664 * Note we MUST do this here, because we can't let insertion 665 * into the bufq cause the transfers to be re-merged. 666 */ 667 if (__predict_false((wd->sc_quirks & WD_QUIRK_SPLIT_MOD15_WRITE) != 0 && 668 (bp->b_flags & B_READ) == 0 && 669 bp->b_bcount > 512 && 670 ((bp->b_bcount / 512) % 15) == 1)) { 671 struct buf *nbp; 672 673 /* already at splbio */ 674 nbp = pool_get(&bufpool, PR_NOWAIT); 675 if (__predict_false(nbp == NULL)) { 676 /* No memory -- fail the iop. */ 677 bp->b_error = ENOMEM; 678 bp->b_flags |= B_ERROR; 679 bp->b_resid = bp->b_bcount; 680 biodone(bp); 681 wd->openings++; 682 return; 683 } 684 685 BUF_INIT(nbp); 686 nbp->b_error = 0; 687 nbp->b_proc = bp->b_proc; 688 nbp->b_vp = NULLVP; 689 nbp->b_dev = bp->b_dev; 690 691 nbp->b_bcount = bp->b_bcount / 2; 692 nbp->b_bufsize = bp->b_bcount / 2; 693 nbp->b_data = bp->b_data; 694 695 nbp->b_blkno = bp->b_blkno; 696 nbp->b_rawblkno = bp->b_rawblkno; 697 698 nbp->b_flags = bp->b_flags | B_CALL; 699 nbp->b_iodone = wd_split_mod15_write; 700 701 /* Put ptr to orig buf in b_private and use new buf */ 702 nbp->b_private = bp; 703 704 BIO_COPYPRIO(nbp, bp); 705 706 bp = nbp; 707 } 708 709 wd->sc_wdc_bio.blkno = bp->b_rawblkno; 710 wd->sc_wdc_bio.blkdone =0; 711 wd->sc_bp = bp; 712 /* 713 * If we're retrying, retry in single-sector mode. This will give us 714 * the sector number of the problem, and will eventually allow the 715 * transfer to succeed. 716 */ 717 if (wd->retries >= WDIORETRIES_SINGLE) 718 wd->sc_wdc_bio.flags = ATA_SINGLE; 719 else 720 wd->sc_wdc_bio.flags = 0; 721 if (wd->sc_flags & WDF_LBA48 && 722 (wd->sc_wdc_bio.blkno > LBA48_THRESHOLD || 723 (wd->sc_quirks & WD_QUIRK_FORCE_LBA48) != 0)) 724 wd->sc_wdc_bio.flags |= ATA_LBA48; 725 if (wd->sc_flags & WDF_LBA) 726 wd->sc_wdc_bio.flags |= ATA_LBA; 727 if (bp->b_flags & B_READ) 728 wd->sc_wdc_bio.flags |= ATA_READ; 729 wd->sc_wdc_bio.bcount = bp->b_bcount; 730 wd->sc_wdc_bio.databuf = bp->b_data; 731 /* Instrumentation. */ 732 disk_busy(&wd->sc_dk); 733 switch (wd->atabus->ata_bio(wd->drvp, &wd->sc_wdc_bio)) { 734 case ATACMD_TRY_AGAIN: 735 callout_reset(&wd->sc_restart_ch, hz, wdrestart, wd); 736 break; 737 case ATACMD_QUEUED: 738 case ATACMD_COMPLETE: 739 break; 740 default: 741 panic("__wdstart: bad return code from ata_bio()"); 742 } 743 } 744 745 void 746 wddone(void *v) 747 { 748 struct wd_softc *wd = v; 749 struct buf *bp = wd->sc_bp; 750 const char *errmsg; 751 int do_perror = 0; 752 ATADEBUG_PRINT(("wddone %s\n", wd->sc_dev.dv_xname), 753 DEBUG_XFERS); 754 755 if (bp == NULL) 756 return; 757 bp->b_resid = wd->sc_wdc_bio.bcount; 758 switch (wd->sc_wdc_bio.error) { 759 case ERR_DMA: 760 errmsg = "DMA error"; 761 goto retry; 762 case ERR_DF: 763 errmsg = "device fault"; 764 goto retry; 765 case TIMEOUT: 766 errmsg = "device timeout"; 767 goto retry; 768 case ERR_RESET: 769 errmsg = "channel reset"; 770 goto retry2; 771 case ERROR: 772 /* Don't care about media change bits */ 773 if (wd->sc_wdc_bio.r_error != 0 && 774 (wd->sc_wdc_bio.r_error & ~(WDCE_MC | WDCE_MCR)) == 0) 775 goto noerror; 776 errmsg = "error"; 777 do_perror = 1; 778 retry: /* Just reset and retry. Can we do more ? */ 779 (*wd->atabus->ata_reset_drive)(wd->drvp, AT_RST_NOCMD); 780 retry2: 781 diskerr(bp, "wd", errmsg, LOG_PRINTF, 782 wd->sc_wdc_bio.blkdone, wd->sc_dk.dk_label); 783 if (wd->retries < WDIORETRIES) 784 printf(", retrying\n"); 785 if (do_perror) 786 wdperror(wd); 787 if (wd->retries < WDIORETRIES) { 788 wd->retries++; 789 callout_reset(&wd->sc_restart_ch, RECOVERYTIME, 790 wdrestart, wd); 791 return; 792 } 793 printf("\n"); 794 795 #ifdef WD_SOFTBADSECT 796 /* 797 * Not all errors indicate a failed block but those that do, 798 * put the block on the bad-block list for the device. Only 799 * do this for reads because the drive should do it for writes, 800 * itself, according to Manuel. 801 */ 802 if ((bp->b_flags & B_READ) && 803 ((wd->drvp->ata_vers >= 4 && wd->sc_wdc_bio.r_error & 64) || 804 (wd->drvp->ata_vers < 4 && wd->sc_wdc_bio.r_error & 192))) { 805 struct disk_badsectors *dbs; 806 807 dbs = malloc(sizeof *dbs, M_TEMP, M_WAITOK); 808 dbs->dbs_min = bp->b_rawblkno; 809 dbs->dbs_max = dbs->dbs_min + (bp->b_bcount >> DEV_BSHIFT) - 1; 810 microtime(&dbs->dbs_failedat); 811 SLIST_INSERT_HEAD(&wd->sc_bslist, dbs, dbs_next); 812 wd->sc_bscount++; 813 } 814 #endif 815 bp->b_flags |= B_ERROR; 816 bp->b_error = EIO; 817 break; 818 case NOERROR: 819 noerror: if ((wd->sc_wdc_bio.flags & ATA_CORR) || wd->retries > 0) 820 printf("%s: soft error (corrected)\n", 821 wd->sc_dev.dv_xname); 822 break; 823 case ERR_NODEV: 824 bp->b_flags |= B_ERROR; 825 bp->b_error = EIO; 826 break; 827 } 828 disk_unbusy(&wd->sc_dk, (bp->b_bcount - bp->b_resid), 829 (bp->b_flags & B_READ)); 830 #if NRND > 0 831 rnd_add_uint32(&wd->rnd_source, bp->b_blkno); 832 #endif 833 /* XXX Yuck, but we don't want to increment openings in this case */ 834 if (__predict_false((bp->b_flags & B_CALL) != 0 && 835 bp->b_iodone == wd_split_mod15_write)) 836 biodone(bp); 837 else { 838 biodone(bp); 839 wd->openings++; 840 } 841 wdstart(wd); 842 } 843 844 void 845 wdrestart(void *v) 846 { 847 struct wd_softc *wd = v; 848 struct buf *bp = wd->sc_bp; 849 int s; 850 ATADEBUG_PRINT(("wdrestart %s\n", wd->sc_dev.dv_xname), 851 DEBUG_XFERS); 852 853 s = splbio(); 854 __wdstart(v, bp); 855 splx(s); 856 } 857 858 int 859 wdread(dev_t dev, struct uio *uio, int flags) 860 { 861 862 ATADEBUG_PRINT(("wdread\n"), DEBUG_XFERS); 863 return (physio(wdstrategy, NULL, dev, B_READ, minphys, uio)); 864 } 865 866 int 867 wdwrite(dev_t dev, struct uio *uio, int flags) 868 { 869 870 ATADEBUG_PRINT(("wdwrite\n"), DEBUG_XFERS); 871 return (physio(wdstrategy, NULL, dev, B_WRITE, minphys, uio)); 872 } 873 874 int 875 wdopen(dev_t dev, int flag, int fmt, struct proc *p) 876 { 877 struct wd_softc *wd; 878 int part, error; 879 880 ATADEBUG_PRINT(("wdopen\n"), DEBUG_FUNCS); 881 wd = device_lookup(&wd_cd, WDUNIT(dev)); 882 if (wd == NULL) 883 return (ENXIO); 884 885 if ((wd->sc_dev.dv_flags & DVF_ACTIVE) == 0) 886 return (ENODEV); 887 888 part = WDPART(dev); 889 890 if ((error = lockmgr(&wd->sc_dk.dk_openlock, LK_EXCLUSIVE, NULL)) != 0) 891 return (error); 892 893 /* 894 * If there are wedges, and this is not RAW_PART, then we 895 * need to fail. 896 */ 897 if (wd->sc_dk.dk_nwedges != 0 && part != RAW_PART) { 898 error = EBUSY; 899 goto bad1; 900 } 901 902 /* 903 * If this is the first open of this device, add a reference 904 * to the adapter. 905 */ 906 if (wd->sc_dk.dk_openmask == 0 && 907 (error = wd->atabus->ata_addref(wd->drvp)) != 0) 908 goto bad1; 909 910 if (wd->sc_dk.dk_openmask != 0) { 911 /* 912 * If any partition is open, but the disk has been invalidated, 913 * disallow further opens. 914 */ 915 if ((wd->sc_flags & WDF_LOADED) == 0) { 916 error = EIO; 917 goto bad2; 918 } 919 } else { 920 if ((wd->sc_flags & WDF_LOADED) == 0) { 921 wd->sc_flags |= WDF_LOADED; 922 923 /* Load the physical device parameters. */ 924 wd_get_params(wd, AT_WAIT, &wd->sc_params); 925 926 /* Load the partition info if not already loaded. */ 927 wdgetdisklabel(wd); 928 } 929 } 930 931 /* Check that the partition exists. */ 932 if (part != RAW_PART && 933 (part >= wd->sc_dk.dk_label->d_npartitions || 934 wd->sc_dk.dk_label->d_partitions[part].p_fstype == FS_UNUSED)) { 935 error = ENXIO; 936 goto bad2; 937 } 938 939 /* Insure only one open at a time. */ 940 switch (fmt) { 941 case S_IFCHR: 942 wd->sc_dk.dk_copenmask |= (1 << part); 943 break; 944 case S_IFBLK: 945 wd->sc_dk.dk_bopenmask |= (1 << part); 946 break; 947 } 948 wd->sc_dk.dk_openmask = 949 wd->sc_dk.dk_copenmask | wd->sc_dk.dk_bopenmask; 950 951 (void) lockmgr(&wd->sc_dk.dk_openlock, LK_RELEASE, NULL); 952 return 0; 953 954 bad2: 955 if (wd->sc_dk.dk_openmask == 0) 956 wd->atabus->ata_delref(wd->drvp); 957 bad1: 958 (void) lockmgr(&wd->sc_dk.dk_openlock, LK_RELEASE, NULL); 959 return error; 960 } 961 962 int 963 wdclose(dev_t dev, int flag, int fmt, struct proc *p) 964 { 965 struct wd_softc *wd = device_lookup(&wd_cd, WDUNIT(dev)); 966 int part = WDPART(dev); 967 int error; 968 969 ATADEBUG_PRINT(("wdclose\n"), DEBUG_FUNCS); 970 971 if ((error = lockmgr(&wd->sc_dk.dk_openlock, LK_EXCLUSIVE, NULL)) != 0) 972 return error; 973 974 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 if (wd->sc_dk.dk_openmask == 0) { 986 wd_flushcache(wd, AT_WAIT); 987 988 if (! (wd->sc_flags & WDF_KLABEL)) 989 wd->sc_flags &= ~WDF_LOADED; 990 991 wd->atabus->ata_delref(wd->drvp); 992 } 993 994 (void) lockmgr(&wd->sc_dk.dk_openlock, LK_RELEASE, NULL); 995 return 0; 996 } 997 998 void 999 wdgetdefaultlabel(struct wd_softc *wd, struct disklabel *lp) 1000 { 1001 1002 ATADEBUG_PRINT(("wdgetdefaultlabel\n"), DEBUG_FUNCS); 1003 memset(lp, 0, sizeof(struct disklabel)); 1004 1005 lp->d_secsize = DEV_BSIZE; 1006 lp->d_ntracks = wd->sc_params.atap_heads; 1007 lp->d_nsectors = wd->sc_params.atap_sectors; 1008 lp->d_ncylinders = (wd->sc_flags & WDF_LBA) ? wd->sc_capacity / 1009 (wd->sc_params.atap_heads * wd->sc_params.atap_sectors) : 1010 wd->sc_params.atap_cylinders; 1011 lp->d_secpercyl = lp->d_ntracks * lp->d_nsectors; 1012 1013 if (strcmp(wd->sc_params.atap_model, "ST506") == 0) 1014 lp->d_type = DTYPE_ST506; 1015 else 1016 lp->d_type = DTYPE_ESDI; 1017 1018 strncpy(lp->d_typename, wd->sc_params.atap_model, 16); 1019 strncpy(lp->d_packname, "fictitious", 16); 1020 if (wd->sc_capacity > UINT32_MAX) 1021 lp->d_secperunit = UINT32_MAX; 1022 else 1023 lp->d_secperunit = wd->sc_capacity; 1024 lp->d_rpm = 3600; 1025 lp->d_interleave = 1; 1026 lp->d_flags = 0; 1027 1028 lp->d_partitions[RAW_PART].p_offset = 0; 1029 lp->d_partitions[RAW_PART].p_size = 1030 lp->d_secperunit * (lp->d_secsize / DEV_BSIZE); 1031 lp->d_partitions[RAW_PART].p_fstype = FS_UNUSED; 1032 lp->d_npartitions = RAW_PART + 1; 1033 1034 lp->d_magic = DISKMAGIC; 1035 lp->d_magic2 = DISKMAGIC; 1036 lp->d_checksum = dkcksum(lp); 1037 } 1038 1039 /* 1040 * Fabricate a default disk label, and try to read the correct one. 1041 */ 1042 void 1043 wdgetdisklabel(struct wd_softc *wd) 1044 { 1045 struct disklabel *lp = wd->sc_dk.dk_label; 1046 const char *errstring; 1047 int s; 1048 1049 ATADEBUG_PRINT(("wdgetdisklabel\n"), DEBUG_FUNCS); 1050 1051 memset(wd->sc_dk.dk_cpulabel, 0, sizeof(struct cpu_disklabel)); 1052 1053 wdgetdefaultlabel(wd, lp); 1054 1055 wd->sc_badsect[0] = -1; 1056 1057 if (wd->drvp->state > RESET) { 1058 s = splbio(); 1059 wd->drvp->drive_flags |= DRIVE_RESET; 1060 splx(s); 1061 } 1062 errstring = readdisklabel(MAKEWDDEV(0, wd->sc_dev.dv_unit, RAW_PART), 1063 wdstrategy, lp, wd->sc_dk.dk_cpulabel); 1064 if (errstring) { 1065 /* 1066 * This probably happened because the drive's default 1067 * geometry doesn't match the DOS geometry. We 1068 * assume the DOS geometry is now in the label and try 1069 * again. XXX This is a kluge. 1070 */ 1071 if (wd->drvp->state > RESET) { 1072 s = splbio(); 1073 wd->drvp->drive_flags |= DRIVE_RESET; 1074 splx(s); 1075 } 1076 errstring = readdisklabel(MAKEWDDEV(0, wd->sc_dev.dv_unit, 1077 RAW_PART), wdstrategy, lp, wd->sc_dk.dk_cpulabel); 1078 } 1079 if (errstring) { 1080 printf("%s: %s\n", wd->sc_dev.dv_xname, errstring); 1081 return; 1082 } 1083 1084 if (wd->drvp->state > RESET) { 1085 s = splbio(); 1086 wd->drvp->drive_flags |= DRIVE_RESET; 1087 splx(s); 1088 } 1089 #ifdef HAS_BAD144_HANDLING 1090 if ((lp->d_flags & D_BADSECT) != 0) 1091 bad144intern(wd); 1092 #endif 1093 } 1094 1095 void 1096 wdperror(const struct wd_softc *wd) 1097 { 1098 static const char *const errstr0_3[] = {"address mark not found", 1099 "track 0 not found", "aborted command", "media change requested", 1100 "id not found", "media changed", "uncorrectable data error", 1101 "bad block detected"}; 1102 static const char *const errstr4_5[] = { 1103 "obsolete (address mark not found)", 1104 "no media/write protected", "aborted command", 1105 "media change requested", "id not found", "media changed", 1106 "uncorrectable data error", "interface CRC error"}; 1107 const char *const *errstr; 1108 int i; 1109 char *sep = ""; 1110 1111 const char *devname = wd->sc_dev.dv_xname; 1112 struct ata_drive_datas *drvp = wd->drvp; 1113 int errno = wd->sc_wdc_bio.r_error; 1114 1115 if (drvp->ata_vers >= 4) 1116 errstr = errstr4_5; 1117 else 1118 errstr = errstr0_3; 1119 1120 printf("%s: (", devname); 1121 1122 if (errno == 0) 1123 printf("error not notified"); 1124 1125 for (i = 0; i < 8; i++) { 1126 if (errno & (1 << i)) { 1127 printf("%s%s", sep, errstr[i]); 1128 sep = ", "; 1129 } 1130 } 1131 printf(")\n"); 1132 } 1133 1134 int 1135 wdioctl(dev_t dev, u_long xfer, caddr_t addr, int flag, struct proc *p) 1136 { 1137 struct wd_softc *wd = device_lookup(&wd_cd, WDUNIT(dev)); 1138 int error = 0, s; 1139 #ifdef __HAVE_OLD_DISKLABEL 1140 struct disklabel *newlabel = NULL; 1141 #endif 1142 1143 ATADEBUG_PRINT(("wdioctl\n"), DEBUG_FUNCS); 1144 1145 if ((wd->sc_flags & WDF_LOADED) == 0) 1146 return EIO; 1147 1148 switch (xfer) { 1149 #ifdef HAS_BAD144_HANDLING 1150 case DIOCSBAD: 1151 if ((flag & FWRITE) == 0) 1152 return EBADF; 1153 wd->sc_dk.dk_cpulabel->bad = *(struct dkbad *)addr; 1154 wd->sc_dk.dk_label->d_flags |= D_BADSECT; 1155 bad144intern(wd); 1156 return 0; 1157 #endif 1158 #ifdef WD_SOFTBADSECT 1159 case DIOCBSLIST : 1160 { 1161 u_int32_t count, missing, skip; 1162 struct disk_badsecinfo dbsi; 1163 struct disk_badsectors *dbs; 1164 size_t available; 1165 caddr_t laddr; 1166 1167 dbsi = *(struct disk_badsecinfo *)addr; 1168 missing = wd->sc_bscount; 1169 count = 0; 1170 available = dbsi.dbsi_bufsize; 1171 skip = dbsi.dbsi_skip; 1172 laddr = dbsi.dbsi_buffer; 1173 1174 /* 1175 * We start this loop with the expectation that all of the 1176 * entries will be missed and decrement this counter each 1177 * time we either skip over one (already copied out) or 1178 * we actually copy it back to user space. The structs 1179 * holding the bad sector information are copied directly 1180 * back to user space whilst the summary is returned via 1181 * the struct passed in via the ioctl. 1182 */ 1183 SLIST_FOREACH(dbs, &wd->sc_bslist, dbs_next) { 1184 if (skip > 0) { 1185 missing--; 1186 skip--; 1187 continue; 1188 } 1189 if (available < sizeof(*dbs)) 1190 break; 1191 available -= sizeof(*dbs); 1192 copyout(dbs, laddr, sizeof(*dbs)); 1193 laddr += sizeof(*dbs); 1194 missing--; 1195 count++; 1196 } 1197 dbsi.dbsi_left = missing; 1198 dbsi.dbsi_copied = count; 1199 *(struct disk_badsecinfo *)addr = dbsi; 1200 return 0; 1201 } 1202 1203 case DIOCBSFLUSH : 1204 /* Clean out the bad sector list */ 1205 while (!SLIST_EMPTY(&wd->sc_bslist)) { 1206 void *head = SLIST_FIRST(&wd->sc_bslist); 1207 SLIST_REMOVE_HEAD(&wd->sc_bslist, dbs_next); 1208 free(head, M_TEMP); 1209 } 1210 wd->sc_bscount = 0; 1211 return 0; 1212 #endif 1213 case DIOCGDINFO: 1214 *(struct disklabel *)addr = *(wd->sc_dk.dk_label); 1215 return 0; 1216 #ifdef __HAVE_OLD_DISKLABEL 1217 case ODIOCGDINFO: 1218 newlabel = malloc(sizeof *newlabel, M_TEMP, M_WAITOK); 1219 if (newlabel == NULL) 1220 return EIO; 1221 *newlabel = *(wd->sc_dk.dk_label); 1222 if (newlabel->d_npartitions <= OLDMAXPARTITIONS) 1223 memcpy(addr, newlabel, sizeof (struct olddisklabel)); 1224 else 1225 error = ENOTTY; 1226 free(newlabel, M_TEMP); 1227 return error; 1228 #endif 1229 1230 case DIOCGPART: 1231 ((struct partinfo *)addr)->disklab = wd->sc_dk.dk_label; 1232 ((struct partinfo *)addr)->part = 1233 &wd->sc_dk.dk_label->d_partitions[WDPART(dev)]; 1234 return 0; 1235 1236 case DIOCWDINFO: 1237 case DIOCSDINFO: 1238 #ifdef __HAVE_OLD_DISKLABEL 1239 case ODIOCWDINFO: 1240 case ODIOCSDINFO: 1241 #endif 1242 { 1243 struct disklabel *lp; 1244 1245 if ((flag & FWRITE) == 0) 1246 return EBADF; 1247 1248 #ifdef __HAVE_OLD_DISKLABEL 1249 if (xfer == ODIOCSDINFO || xfer == ODIOCWDINFO) { 1250 newlabel = malloc(sizeof *newlabel, M_TEMP, M_WAITOK); 1251 if (newlabel == NULL) 1252 return EIO; 1253 memset(newlabel, 0, sizeof newlabel); 1254 memcpy(newlabel, addr, sizeof (struct olddisklabel)); 1255 lp = newlabel; 1256 } else 1257 #endif 1258 lp = (struct disklabel *)addr; 1259 1260 if ((error = lockmgr(&wd->sc_dk.dk_openlock, LK_EXCLUSIVE, 1261 NULL)) != 0) 1262 goto bad; 1263 wd->sc_flags |= WDF_LABELLING; 1264 1265 error = setdisklabel(wd->sc_dk.dk_label, 1266 lp, /*wd->sc_dk.dk_openmask : */0, 1267 wd->sc_dk.dk_cpulabel); 1268 if (error == 0) { 1269 if (wd->drvp->state > RESET) { 1270 s = splbio(); 1271 wd->drvp->drive_flags |= DRIVE_RESET; 1272 splx(s); 1273 } 1274 if (xfer == DIOCWDINFO 1275 #ifdef __HAVE_OLD_DISKLABEL 1276 || xfer == ODIOCWDINFO 1277 #endif 1278 ) 1279 error = writedisklabel(WDLABELDEV(dev), 1280 wdstrategy, wd->sc_dk.dk_label, 1281 wd->sc_dk.dk_cpulabel); 1282 } 1283 1284 wd->sc_flags &= ~WDF_LABELLING; 1285 (void) lockmgr(&wd->sc_dk.dk_openlock, LK_RELEASE, NULL); 1286 bad: 1287 #ifdef __HAVE_OLD_DISKLABEL 1288 if (newlabel != NULL) 1289 free(newlabel, M_TEMP); 1290 #endif 1291 return error; 1292 } 1293 1294 case DIOCKLABEL: 1295 if (*(int *)addr) 1296 wd->sc_flags |= WDF_KLABEL; 1297 else 1298 wd->sc_flags &= ~WDF_KLABEL; 1299 return 0; 1300 1301 case DIOCWLABEL: 1302 if ((flag & FWRITE) == 0) 1303 return EBADF; 1304 if (*(int *)addr) 1305 wd->sc_flags |= WDF_WLABEL; 1306 else 1307 wd->sc_flags &= ~WDF_WLABEL; 1308 return 0; 1309 1310 case DIOCGDEFLABEL: 1311 wdgetdefaultlabel(wd, (struct disklabel *)addr); 1312 return 0; 1313 #ifdef __HAVE_OLD_DISKLABEL 1314 case ODIOCGDEFLABEL: 1315 newlabel = malloc(sizeof *newlabel, M_TEMP, M_WAITOK); 1316 if (newlabel == NULL) 1317 return EIO; 1318 wdgetdefaultlabel(wd, newlabel); 1319 if (newlabel->d_npartitions <= OLDMAXPARTITIONS) 1320 memcpy(addr, &newlabel, sizeof (struct olddisklabel)); 1321 else 1322 error = ENOTTY; 1323 free(newlabel, M_TEMP); 1324 return error; 1325 #endif 1326 1327 #ifdef notyet 1328 case DIOCWFORMAT: 1329 if ((flag & FWRITE) == 0) 1330 return EBADF; 1331 { 1332 register struct format_op *fop; 1333 struct iovec aiov; 1334 struct uio auio; 1335 1336 fop = (struct format_op *)addr; 1337 aiov.iov_base = fop->df_buf; 1338 aiov.iov_len = fop->df_count; 1339 auio.uio_iov = &aiov; 1340 auio.uio_iovcnt = 1; 1341 auio.uio_resid = fop->df_count; 1342 auio.uio_segflg = 0; 1343 auio.uio_offset = 1344 fop->df_startblk * wd->sc_dk.dk_label->d_secsize; 1345 auio.uio_procp = p; 1346 error = physio(wdformat, NULL, dev, B_WRITE, minphys, 1347 &auio); 1348 fop->df_count -= auio.uio_resid; 1349 fop->df_reg[0] = wdc->sc_status; 1350 fop->df_reg[1] = wdc->sc_error; 1351 return error; 1352 } 1353 #endif 1354 case DIOCGCACHE: 1355 return wd_getcache(wd, (int *)addr); 1356 1357 case DIOCSCACHE: 1358 return wd_setcache(wd, *(int *)addr); 1359 1360 case DIOCCACHESYNC: 1361 return wd_flushcache(wd, AT_WAIT); 1362 1363 case ATAIOCCOMMAND: 1364 /* 1365 * Make sure this command is (relatively) safe first 1366 */ 1367 if ((((atareq_t *) addr)->flags & ATACMD_READ) == 0 && 1368 (flag & FWRITE) == 0) 1369 return (EBADF); 1370 { 1371 struct wd_ioctl *wi; 1372 atareq_t *atareq = (atareq_t *) addr; 1373 int error; 1374 1375 wi = wi_get(); 1376 wi->wi_softc = wd; 1377 wi->wi_atareq = *atareq; 1378 1379 if (atareq->datalen && atareq->flags & 1380 (ATACMD_READ | ATACMD_WRITE)) { 1381 wi->wi_iov.iov_base = atareq->databuf; 1382 wi->wi_iov.iov_len = atareq->datalen; 1383 wi->wi_uio.uio_iov = &wi->wi_iov; 1384 wi->wi_uio.uio_iovcnt = 1; 1385 wi->wi_uio.uio_resid = atareq->datalen; 1386 wi->wi_uio.uio_offset = 0; 1387 wi->wi_uio.uio_segflg = UIO_USERSPACE; 1388 wi->wi_uio.uio_rw = 1389 (atareq->flags & ATACMD_READ) ? B_READ : B_WRITE; 1390 wi->wi_uio.uio_procp = p; 1391 error = physio(wdioctlstrategy, &wi->wi_bp, dev, 1392 (atareq->flags & ATACMD_READ) ? B_READ : B_WRITE, 1393 minphys, &wi->wi_uio); 1394 } else { 1395 /* No need to call physio if we don't have any 1396 user data */ 1397 wi->wi_bp.b_flags = 0; 1398 wi->wi_bp.b_data = 0; 1399 wi->wi_bp.b_bcount = 0; 1400 wi->wi_bp.b_dev = 0; 1401 wi->wi_bp.b_proc = p; 1402 wdioctlstrategy(&wi->wi_bp); 1403 error = wi->wi_bp.b_error; 1404 } 1405 *atareq = wi->wi_atareq; 1406 wi_free(wi); 1407 return(error); 1408 } 1409 1410 case DIOCAWEDGE: 1411 { 1412 struct dkwedge_info *dkw = (void *) addr; 1413 1414 if ((flag & FWRITE) == 0) 1415 return (EBADF); 1416 1417 /* If the ioctl happens here, the parent is us. */ 1418 strcpy(dkw->dkw_parent, wd->sc_dev.dv_xname); 1419 return (dkwedge_add(dkw)); 1420 } 1421 1422 case DIOCDWEDGE: 1423 { 1424 struct dkwedge_info *dkw = (void *) addr; 1425 1426 if ((flag & FWRITE) == 0) 1427 return (EBADF); 1428 1429 /* If the ioctl happens here, the parent is us. */ 1430 strcpy(dkw->dkw_parent, wd->sc_dev.dv_xname); 1431 return (dkwedge_del(dkw)); 1432 } 1433 1434 case DIOCLWEDGES: 1435 { 1436 struct dkwedge_list *dkwl = (void *) addr; 1437 1438 return (dkwedge_list(&wd->sc_dk, dkwl, p)); 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_t dev) 1462 { 1463 struct wd_softc *wd; 1464 int part, omask; 1465 int size; 1466 1467 ATADEBUG_PRINT(("wdsize\n"), DEBUG_FUNCS); 1468 1469 wd = device_lookup(&wd_cd, WDUNIT(dev)); 1470 if (wd == NULL) 1471 return (-1); 1472 1473 part = WDPART(dev); 1474 omask = wd->sc_dk.dk_openmask & (1 << part); 1475 1476 if (omask == 0 && wdopen(dev, 0, S_IFBLK, NULL) != 0) 1477 return (-1); 1478 if (wd->sc_dk.dk_label->d_partitions[part].p_fstype != FS_SWAP) 1479 size = -1; 1480 else 1481 size = wd->sc_dk.dk_label->d_partitions[part].p_size * 1482 (wd->sc_dk.dk_label->d_secsize / DEV_BSIZE); 1483 if (omask == 0 && wdclose(dev, 0, S_IFBLK, NULL) != 0) 1484 return (-1); 1485 return (size); 1486 } 1487 1488 /* #define WD_DUMP_NOT_TRUSTED if you just want to watch */ 1489 static int wddoingadump = 0; 1490 static int wddumprecalibrated = 0; 1491 static int wddumpmulti = 1; 1492 1493 /* 1494 * Dump core after a system crash. 1495 */ 1496 int 1497 wddump(dev_t dev, daddr_t blkno, caddr_t va, size_t size) 1498 { 1499 struct wd_softc *wd; /* disk unit to do the I/O */ 1500 struct disklabel *lp; /* disk's disklabel */ 1501 int part, err; 1502 int nblks; /* total number of sectors left to write */ 1503 1504 /* Check if recursive dump; if so, punt. */ 1505 if (wddoingadump) 1506 return EFAULT; 1507 wddoingadump = 1; 1508 1509 wd = device_lookup(&wd_cd, WDUNIT(dev)); 1510 if (wd == NULL) 1511 return (ENXIO); 1512 1513 part = WDPART(dev); 1514 1515 /* Convert to disk sectors. Request must be a multiple of size. */ 1516 lp = wd->sc_dk.dk_label; 1517 if ((size % lp->d_secsize) != 0) 1518 return EFAULT; 1519 nblks = size / lp->d_secsize; 1520 blkno = blkno / (lp->d_secsize / DEV_BSIZE); 1521 1522 /* Check transfer bounds against partition size. */ 1523 if ((blkno < 0) || ((blkno + nblks) > lp->d_partitions[part].p_size)) 1524 return EINVAL; 1525 1526 /* Offset block number to start of partition. */ 1527 blkno += lp->d_partitions[part].p_offset; 1528 1529 /* Recalibrate, if first dump transfer. */ 1530 if (wddumprecalibrated == 0) { 1531 wddumpmulti = wd->sc_multi; 1532 wddumprecalibrated = 1; 1533 (*wd->atabus->ata_reset_drive)(wd->drvp, 1534 AT_POLL | AT_RST_EMERG); 1535 wd->drvp->state = RESET; 1536 } 1537 1538 while (nblks > 0) { 1539 wd->sc_bp = NULL; 1540 wd->sc_wdc_bio.blkno = blkno; 1541 wd->sc_wdc_bio.flags = ATA_POLL; 1542 if (wd->sc_flags & WDF_LBA48 && 1543 (blkno > LBA48_THRESHOLD || 1544 (wd->sc_quirks & WD_QUIRK_FORCE_LBA48) != 0)) 1545 wd->sc_wdc_bio.flags |= ATA_LBA48; 1546 if (wd->sc_flags & WDF_LBA) 1547 wd->sc_wdc_bio.flags |= ATA_LBA; 1548 wd->sc_wdc_bio.bcount = 1549 min(nblks, wddumpmulti) * lp->d_secsize; 1550 wd->sc_wdc_bio.databuf = va; 1551 #ifndef WD_DUMP_NOT_TRUSTED 1552 switch (wd->atabus->ata_bio(wd->drvp, &wd->sc_wdc_bio)) { 1553 case ATACMD_TRY_AGAIN: 1554 panic("wddump: try again"); 1555 break; 1556 case ATACMD_QUEUED: 1557 panic("wddump: polled command has been queued"); 1558 break; 1559 case ATACMD_COMPLETE: 1560 break; 1561 } 1562 switch(wd->sc_wdc_bio.error) { 1563 case TIMEOUT: 1564 printf("wddump: device timed out"); 1565 err = EIO; 1566 break; 1567 case ERR_DF: 1568 printf("wddump: drive fault"); 1569 err = EIO; 1570 break; 1571 case ERR_DMA: 1572 printf("wddump: DMA error"); 1573 err = EIO; 1574 break; 1575 case ERROR: 1576 printf("wddump: "); 1577 wdperror(wd); 1578 err = EIO; 1579 break; 1580 case NOERROR: 1581 err = 0; 1582 break; 1583 default: 1584 panic("wddump: unknown error type"); 1585 } 1586 if (err != 0) { 1587 printf("\n"); 1588 return err; 1589 } 1590 #else /* WD_DUMP_NOT_TRUSTED */ 1591 /* Let's just talk about this first... */ 1592 printf("wd%d: dump addr 0x%x, cylin %d, head %d, sector %d\n", 1593 unit, va, cylin, head, sector); 1594 delay(500 * 1000); /* half a second */ 1595 #endif 1596 1597 /* update block count */ 1598 nblks -= min(nblks, wddumpmulti); 1599 blkno += min(nblks, wddumpmulti); 1600 va += min(nblks, wddumpmulti) * lp->d_secsize; 1601 } 1602 1603 wddoingadump = 0; 1604 return 0; 1605 } 1606 1607 #ifdef HAS_BAD144_HANDLING 1608 /* 1609 * Internalize the bad sector table. 1610 */ 1611 void 1612 bad144intern(struct wd_softc *wd) 1613 { 1614 struct dkbad *bt = &wd->sc_dk.dk_cpulabel->bad; 1615 struct disklabel *lp = wd->sc_dk.dk_label; 1616 int i = 0; 1617 1618 ATADEBUG_PRINT(("bad144intern\n"), DEBUG_XFERS); 1619 1620 for (; i < NBT_BAD; i++) { 1621 if (bt->bt_bad[i].bt_cyl == 0xffff) 1622 break; 1623 wd->sc_badsect[i] = 1624 bt->bt_bad[i].bt_cyl * lp->d_secpercyl + 1625 (bt->bt_bad[i].bt_trksec >> 8) * lp->d_nsectors + 1626 (bt->bt_bad[i].bt_trksec & 0xff); 1627 } 1628 for (; i < NBT_BAD+1; i++) 1629 wd->sc_badsect[i] = -1; 1630 } 1631 #endif 1632 1633 int 1634 wd_get_params(struct wd_softc *wd, u_int8_t flags, struct ataparams *params) 1635 { 1636 switch (wd->atabus->ata_get_params(wd->drvp, flags, params)) { 1637 case CMD_AGAIN: 1638 return 1; 1639 case CMD_ERR: 1640 /* 1641 * We `know' there's a drive here; just assume it's old. 1642 * This geometry is only used to read the MBR and print a 1643 * (false) attach message. 1644 */ 1645 strncpy(params->atap_model, "ST506", 1646 sizeof params->atap_model); 1647 params->atap_config = ATA_CFG_FIXED; 1648 params->atap_cylinders = 1024; 1649 params->atap_heads = 8; 1650 params->atap_sectors = 17; 1651 params->atap_multi = 1; 1652 params->atap_capabilities1 = params->atap_capabilities2 = 0; 1653 wd->drvp->ata_vers = -1; /* Mark it as pre-ATA */ 1654 return 0; 1655 case CMD_OK: 1656 return 0; 1657 default: 1658 panic("wd_get_params: bad return code from ata_get_params"); 1659 /* NOTREACHED */ 1660 } 1661 } 1662 1663 int 1664 wd_getcache(struct wd_softc *wd, int *bitsp) 1665 { 1666 struct ataparams params; 1667 1668 if (wd_get_params(wd, AT_WAIT, ¶ms) != 0) 1669 return EIO; 1670 if (params.atap_cmd_set1 == 0x0000 || 1671 params.atap_cmd_set1 == 0xffff || 1672 (params.atap_cmd_set1 & WDC_CMD1_CACHE) == 0) { 1673 *bitsp = 0; 1674 return 0; 1675 } 1676 *bitsp = DKCACHE_WCHANGE | DKCACHE_READ; 1677 if (params.atap_cmd1_en & WDC_CMD1_CACHE) 1678 *bitsp |= DKCACHE_WRITE; 1679 1680 return 0; 1681 } 1682 1683 const char at_errbits[] = "\20\10ERROR\11TIMEOU\12DF"; 1684 1685 int 1686 wd_setcache(struct wd_softc *wd, int bits) 1687 { 1688 struct ataparams params; 1689 struct ata_command ata_c; 1690 1691 if (wd_get_params(wd, AT_WAIT, ¶ms) != 0) 1692 return EIO; 1693 1694 if (params.atap_cmd_set1 == 0x0000 || 1695 params.atap_cmd_set1 == 0xffff || 1696 (params.atap_cmd_set1 & WDC_CMD1_CACHE) == 0) 1697 return EOPNOTSUPP; 1698 1699 if ((bits & DKCACHE_READ) == 0 || 1700 (bits & DKCACHE_SAVE) != 0) 1701 return EOPNOTSUPP; 1702 1703 memset(&ata_c, 0, sizeof(struct ata_command)); 1704 ata_c.r_command = SET_FEATURES; 1705 ata_c.r_st_bmask = 0; 1706 ata_c.r_st_pmask = 0; 1707 ata_c.timeout = 30000; /* 30s timeout */ 1708 ata_c.flags = AT_WAIT; 1709 if (bits & DKCACHE_WRITE) 1710 ata_c.r_features = WDSF_WRITE_CACHE_EN; 1711 else 1712 ata_c.r_features = WDSF_WRITE_CACHE_DS; 1713 if (wd->atabus->ata_exec_command(wd->drvp, &ata_c) != ATACMD_COMPLETE) { 1714 printf("%s: wd_setcache command not complete\n", 1715 wd->sc_dev.dv_xname); 1716 return EIO; 1717 } 1718 if (ata_c.flags & (AT_ERROR | AT_TIMEOU | AT_DF)) { 1719 char sbuf[sizeof(at_errbits) + 64]; 1720 bitmask_snprintf(ata_c.flags, at_errbits, sbuf, sizeof(sbuf)); 1721 printf("%s: wd_setcache: status=%s\n", wd->sc_dev.dv_xname, 1722 sbuf); 1723 return EIO; 1724 } 1725 return 0; 1726 } 1727 1728 int 1729 wd_standby(struct wd_softc *wd, int flags) 1730 { 1731 struct ata_command ata_c; 1732 1733 memset(&ata_c, 0, sizeof(struct ata_command)); 1734 ata_c.r_command = WDCC_STANDBY_IMMED; 1735 ata_c.r_st_bmask = WDCS_DRDY; 1736 ata_c.r_st_pmask = WDCS_DRDY; 1737 ata_c.flags = flags; 1738 ata_c.timeout = 30000; /* 30s timeout */ 1739 if (wd->atabus->ata_exec_command(wd->drvp, &ata_c) != ATACMD_COMPLETE) { 1740 printf("%s: standby immediate command didn't complete\n", 1741 wd->sc_dev.dv_xname); 1742 return EIO; 1743 } 1744 if (ata_c.flags & AT_ERROR) { 1745 if (ata_c.r_error == WDCE_ABRT) /* command not supported */ 1746 return ENODEV; 1747 } 1748 if (ata_c.flags & (AT_ERROR | AT_TIMEOU | AT_DF)) { 1749 char sbuf[sizeof(at_errbits) + 64]; 1750 bitmask_snprintf(ata_c.flags, at_errbits, sbuf, sizeof(sbuf)); 1751 printf("%s: wd_standby: status=%s\n", wd->sc_dev.dv_xname, 1752 sbuf); 1753 return EIO; 1754 } 1755 return 0; 1756 } 1757 1758 int 1759 wd_flushcache(struct wd_softc *wd, int flags) 1760 { 1761 struct ata_command ata_c; 1762 1763 /* 1764 * WDCC_FLUSHCACHE is here since ATA-4, but some drives report 1765 * only ATA-2 and still support it. 1766 */ 1767 if (wd->drvp->ata_vers < 4 && 1768 ((wd->sc_params.atap_cmd_set2 & WDC_CMD2_FC) == 0 || 1769 wd->sc_params.atap_cmd_set2 == 0xffff)) 1770 return ENODEV; 1771 memset(&ata_c, 0, sizeof(struct ata_command)); 1772 if ((wd->sc_params.atap_cmd2_en & ATA_CMD2_LBA48) != 0 && 1773 (wd->sc_params.atap_cmd2_en & ATA_CMD2_FCE) != 0) 1774 ata_c.r_command = WDCC_FLUSHCACHE_EXT; 1775 else 1776 ata_c.r_command = WDCC_FLUSHCACHE; 1777 ata_c.r_st_bmask = WDCS_DRDY; 1778 ata_c.r_st_pmask = WDCS_DRDY; 1779 ata_c.flags = flags; 1780 ata_c.timeout = 30000; /* 30s timeout */ 1781 if (wd->atabus->ata_exec_command(wd->drvp, &ata_c) != ATACMD_COMPLETE) { 1782 printf("%s: flush cache command didn't complete\n", 1783 wd->sc_dev.dv_xname); 1784 return EIO; 1785 } 1786 if (ata_c.flags & AT_ERROR) { 1787 if (ata_c.r_error == WDCE_ABRT) /* command not supported */ 1788 return ENODEV; 1789 } 1790 if (ata_c.flags & (AT_ERROR | AT_TIMEOU | AT_DF)) { 1791 char sbuf[sizeof(at_errbits) + 64]; 1792 bitmask_snprintf(ata_c.flags, at_errbits, sbuf, sizeof(sbuf)); 1793 printf("%s: wd_flushcache: status=%s\n", wd->sc_dev.dv_xname, 1794 sbuf); 1795 return EIO; 1796 } 1797 return 0; 1798 } 1799 1800 void 1801 wd_shutdown(void *arg) 1802 { 1803 struct wd_softc *wd = arg; 1804 wd_flushcache(wd, AT_POLL); 1805 } 1806 1807 /* 1808 * Allocate space for a ioctl queue structure. Mostly taken from 1809 * scsipi_ioctl.c 1810 */ 1811 struct wd_ioctl * 1812 wi_get(void) 1813 { 1814 struct wd_ioctl *wi; 1815 int s; 1816 1817 wi = malloc(sizeof(struct wd_ioctl), M_TEMP, M_WAITOK|M_ZERO); 1818 simple_lock_init(&wi->wi_bp.b_interlock); 1819 s = splbio(); 1820 LIST_INSERT_HEAD(&wi_head, wi, wi_list); 1821 splx(s); 1822 return (wi); 1823 } 1824 1825 /* 1826 * Free an ioctl structure and remove it from our list 1827 */ 1828 1829 void 1830 wi_free(struct wd_ioctl *wi) 1831 { 1832 int s; 1833 1834 s = splbio(); 1835 LIST_REMOVE(wi, wi_list); 1836 splx(s); 1837 free(wi, M_TEMP); 1838 } 1839 1840 /* 1841 * Find a wd_ioctl structure based on the struct buf. 1842 */ 1843 1844 struct wd_ioctl * 1845 wi_find(struct buf *bp) 1846 { 1847 struct wd_ioctl *wi; 1848 int s; 1849 1850 s = splbio(); 1851 for (wi = wi_head.lh_first; wi != 0; wi = wi->wi_list.le_next) 1852 if (bp == &wi->wi_bp) 1853 break; 1854 splx(s); 1855 return (wi); 1856 } 1857 1858 /* 1859 * Ioctl pseudo strategy routine 1860 * 1861 * This is mostly stolen from scsipi_ioctl.c:scsistrategy(). What 1862 * happens here is: 1863 * 1864 * - wdioctl() queues a wd_ioctl structure. 1865 * 1866 * - wdioctl() calls physio/wdioctlstrategy based on whether or not 1867 * user space I/O is required. If physio() is called, physio() eventually 1868 * calls wdioctlstrategy(). 1869 * 1870 * - In either case, wdioctlstrategy() calls wd->atabus->ata_exec_command() 1871 * to perform the actual command 1872 * 1873 * The reason for the use of the pseudo strategy routine is because 1874 * when doing I/O to/from user space, physio _really_ wants to be in 1875 * the loop. We could put the entire buffer into the ioctl request 1876 * structure, but that won't scale if we want to do things like download 1877 * microcode. 1878 */ 1879 1880 void 1881 wdioctlstrategy(struct buf *bp) 1882 { 1883 struct wd_ioctl *wi; 1884 struct ata_command ata_c; 1885 int error = 0; 1886 1887 wi = wi_find(bp); 1888 if (wi == NULL) { 1889 printf("user_strat: No ioctl\n"); 1890 error = EINVAL; 1891 goto bad; 1892 } 1893 1894 memset(&ata_c, 0, sizeof(ata_c)); 1895 1896 /* 1897 * Abort if physio broke up the transfer 1898 */ 1899 1900 if (bp->b_bcount != wi->wi_atareq.datalen) { 1901 printf("physio split wd ioctl request... cannot proceed\n"); 1902 error = EIO; 1903 goto bad; 1904 } 1905 1906 /* 1907 * Abort if we didn't get a buffer size that was a multiple of 1908 * our sector size (or was larger than NBBY) 1909 */ 1910 1911 if ((bp->b_bcount % wi->wi_softc->sc_dk.dk_label->d_secsize) != 0 || 1912 (bp->b_bcount / wi->wi_softc->sc_dk.dk_label->d_secsize) >= 1913 (1 << NBBY)) { 1914 error = EINVAL; 1915 goto bad; 1916 } 1917 1918 /* 1919 * Make sure a timeout was supplied in the ioctl request 1920 */ 1921 1922 if (wi->wi_atareq.timeout == 0) { 1923 error = EINVAL; 1924 goto bad; 1925 } 1926 1927 if (wi->wi_atareq.flags & ATACMD_READ) 1928 ata_c.flags |= AT_READ; 1929 else if (wi->wi_atareq.flags & ATACMD_WRITE) 1930 ata_c.flags |= AT_WRITE; 1931 1932 if (wi->wi_atareq.flags & ATACMD_READREG) 1933 ata_c.flags |= AT_READREG; 1934 1935 ata_c.flags |= AT_WAIT; 1936 1937 ata_c.timeout = wi->wi_atareq.timeout; 1938 ata_c.r_command = wi->wi_atareq.command; 1939 ata_c.r_head = wi->wi_atareq.head & 0x0f; 1940 ata_c.r_cyl = wi->wi_atareq.cylinder; 1941 ata_c.r_sector = wi->wi_atareq.sec_num; 1942 ata_c.r_count = wi->wi_atareq.sec_count; 1943 ata_c.r_features = wi->wi_atareq.features; 1944 ata_c.r_st_bmask = WDCS_DRDY; 1945 ata_c.r_st_pmask = WDCS_DRDY; 1946 ata_c.data = wi->wi_bp.b_data; 1947 ata_c.bcount = wi->wi_bp.b_bcount; 1948 1949 if (wi->wi_softc->atabus->ata_exec_command(wi->wi_softc->drvp, &ata_c) 1950 != ATACMD_COMPLETE) { 1951 wi->wi_atareq.retsts = ATACMD_ERROR; 1952 goto bad; 1953 } 1954 1955 if (ata_c.flags & (AT_ERROR | AT_TIMEOU | AT_DF)) { 1956 if (ata_c.flags & AT_ERROR) { 1957 wi->wi_atareq.retsts = ATACMD_ERROR; 1958 wi->wi_atareq.error = ata_c.r_error; 1959 } else if (ata_c.flags & AT_DF) 1960 wi->wi_atareq.retsts = ATACMD_DF; 1961 else 1962 wi->wi_atareq.retsts = ATACMD_TIMEOUT; 1963 } else { 1964 wi->wi_atareq.retsts = ATACMD_OK; 1965 if (wi->wi_atareq.flags & ATACMD_READREG) { 1966 wi->wi_atareq.head = ata_c.r_head ; 1967 wi->wi_atareq.cylinder = ata_c.r_cyl; 1968 wi->wi_atareq.sec_num = ata_c.r_sector; 1969 wi->wi_atareq.sec_count = ata_c.r_count; 1970 wi->wi_atareq.features = ata_c.r_features; 1971 wi->wi_atareq.error = ata_c.r_error; 1972 } 1973 } 1974 1975 bp->b_error = 0; 1976 biodone(bp); 1977 return; 1978 bad: 1979 bp->b_flags |= B_ERROR; 1980 bp->b_error = error; 1981 biodone(bp); 1982 } 1983
Indexes created Sun Sep 28 07:09:56 GMT 2025