wd.c revision 1.306
1 /* $NetBSD: wd.c,v 1.306 2005/08/25 19:06:35 bouyer 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 1.306 2005/08/25 19:06:35 bouyer 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 * These seagate drives seems to have issue addressing sector 0xfffffff 235 * (aka LBA48_THRESHOLD) in LBA mode. The workaround is to force 236 * LBA48 237 * Note that we can't just change the code to always use LBA48 for 238 * sector 0xfffffff, because this would break valid and working 239 * setups using LBA48 drives on non-LBA48-capable controllers 240 * (and it's hard to get a list of such controllers) 241 */ 242 { "ST3160023A*", 243 WD_QUIRK_FORCE_LBA48 }, 244 { "ST3160827A*", 245 WD_QUIRK_FORCE_LBA48 }, 246 { "ST3200822A*", 247 WD_QUIRK_FORCE_LBA48 }, 248 { "ST3250823A*", 249 WD_QUIRK_FORCE_LBA48 }, 250 251 { NULL, 252 0 } 253 }; 254 255 static const struct wd_quirk * 256 wd_lookup_quirks(const char *name) 257 { 258 const struct wd_quirk *wdq; 259 const char *estr; 260 261 for (wdq = wd_quirk_table; wdq->wdq_match != NULL; wdq++) { 262 /* 263 * We only want exact matches (which include matches 264 * against globbing characters). 265 */ 266 if (pmatch(name, wdq->wdq_match, &estr) == 2) 267 return (wdq); 268 } 269 return (NULL); 270 } 271 272 int 273 wdprobe(struct device *parent, struct cfdata *match, void *aux) 274 { 275 struct ata_device *adev = aux; 276 277 if (adev == NULL) 278 return 0; 279 if (adev->adev_bustype->bustype_type != SCSIPI_BUSTYPE_ATA) 280 return 0; 281 282 if (match->cf_loc[ATA_HLCF_DRIVE] != ATA_HLCF_DRIVE_DEFAULT && 283 match->cf_loc[ATA_HLCF_DRIVE] != adev->adev_drv_data->drive) 284 return 0; 285 return 1; 286 } 287 288 void 289 wdattach(struct device *parent, struct device *self, void *aux) 290 { 291 struct wd_softc *wd = (void *)self; 292 struct ata_device *adev= aux; 293 int i, blank; 294 char tbuf[41], pbuf[9], c, *p, *q; 295 const struct wd_quirk *wdq; 296 ATADEBUG_PRINT(("wdattach\n"), DEBUG_FUNCS | DEBUG_PROBE); 297 298 callout_init(&wd->sc_restart_ch); 299 bufq_alloc(&wd->sc_q, BUFQ_DISK_DEFAULT_STRAT()|BUFQ_SORT_RAWBLOCK); 300 #ifdef WD_SOFTBADSECT 301 SLIST_INIT(&wd->sc_bslist); 302 #endif 303 wd->atabus = adev->adev_bustype; 304 wd->openings = adev->adev_openings; 305 wd->drvp = adev->adev_drv_data; 306 307 wd->drvp->drv_done = wddone; 308 wd->drvp->drv_softc = &wd->sc_dev; 309 310 aprint_naive("\n"); 311 312 /* read our drive info */ 313 if (wd_get_params(wd, AT_WAIT, &wd->sc_params) != 0) { 314 aprint_error("\n%s: IDENTIFY failed\n", wd->sc_dev.dv_xname); 315 return; 316 } 317 318 for (blank = 0, p = wd->sc_params.atap_model, q = tbuf, i = 0; 319 i < sizeof(wd->sc_params.atap_model); i++) { 320 c = *p++; 321 if (c == '\0') 322 break; 323 if (c != ' ') { 324 if (blank) { 325 *q++ = ' '; 326 blank = 0; 327 } 328 *q++ = c; 329 } else 330 blank = 1; 331 } 332 *q++ = '\0'; 333 334 aprint_normal(": <%s>\n", tbuf); 335 336 wdq = wd_lookup_quirks(tbuf); 337 if (wdq != NULL) 338 wd->sc_quirks = wdq->wdq_quirks; 339 340 if ((wd->sc_params.atap_multi & 0xff) > 1) { 341 wd->sc_multi = wd->sc_params.atap_multi & 0xff; 342 } else { 343 wd->sc_multi = 1; 344 } 345 346 aprint_normal("%s: drive supports %d-sector PIO transfers,", 347 wd->sc_dev.dv_xname, wd->sc_multi); 348 349 /* 48-bit LBA addressing */ 350 if ((wd->sc_params.atap_cmd2_en & ATA_CMD2_LBA48) != 0) 351 wd->sc_flags |= WDF_LBA48; 352 353 /* Prior to ATA-4, LBA was optional. */ 354 if ((wd->sc_params.atap_capabilities1 & WDC_CAP_LBA) != 0) 355 wd->sc_flags |= WDF_LBA; 356 #if 0 357 /* ATA-4 requires LBA. */ 358 if (wd->sc_params.atap_ataversion != 0xffff && 359 wd->sc_params.atap_ataversion >= WDC_VER_ATA4) 360 wd->sc_flags |= WDF_LBA; 361 #endif 362 363 if ((wd->sc_flags & WDF_LBA48) != 0) { 364 aprint_normal(" LBA48 addressing\n"); 365 wd->sc_capacity = 366 ((u_int64_t) wd->sc_params.__reserved6[11] << 48) | 367 ((u_int64_t) wd->sc_params.__reserved6[10] << 32) | 368 ((u_int64_t) wd->sc_params.__reserved6[9] << 16) | 369 ((u_int64_t) wd->sc_params.__reserved6[8] << 0); 370 } else if ((wd->sc_flags & WDF_LBA) != 0) { 371 aprint_normal(" LBA addressing\n"); 372 wd->sc_capacity = 373 (wd->sc_params.atap_capacity[1] << 16) | 374 wd->sc_params.atap_capacity[0]; 375 } else { 376 aprint_normal(" chs addressing\n"); 377 wd->sc_capacity = 378 wd->sc_params.atap_cylinders * 379 wd->sc_params.atap_heads * 380 wd->sc_params.atap_sectors; 381 } 382 format_bytes(pbuf, sizeof(pbuf), wd->sc_capacity * DEV_BSIZE); 383 aprint_normal("%s: %s, %d cyl, %d head, %d sec, " 384 "%d bytes/sect x %llu sectors\n", 385 self->dv_xname, pbuf, 386 (wd->sc_flags & WDF_LBA) ? (int)(wd->sc_capacity / 387 (wd->sc_params.atap_heads * wd->sc_params.atap_sectors)) : 388 wd->sc_params.atap_cylinders, 389 wd->sc_params.atap_heads, wd->sc_params.atap_sectors, 390 DEV_BSIZE, (unsigned long long)wd->sc_capacity); 391 392 ATADEBUG_PRINT(("%s: atap_dmatiming_mimi=%d, atap_dmatiming_recom=%d\n", 393 self->dv_xname, wd->sc_params.atap_dmatiming_mimi, 394 wd->sc_params.atap_dmatiming_recom), DEBUG_PROBE); 395 /* 396 * Initialize and attach the disk structure. 397 */ 398 wd->sc_dk.dk_driver = &wddkdriver; 399 wd->sc_dk.dk_name = wd->sc_dev.dv_xname; 400 disk_attach(&wd->sc_dk); 401 wd->sc_wdc_bio.lp = wd->sc_dk.dk_label; 402 wd->sc_sdhook = shutdownhook_establish(wd_shutdown, wd); 403 if (wd->sc_sdhook == NULL) 404 aprint_error("%s: WARNING: unable to establish shutdown hook\n", 405 wd->sc_dev.dv_xname); 406 #if NRND > 0 407 rnd_attach_source(&wd->rnd_source, wd->sc_dev.dv_xname, 408 RND_TYPE_DISK, 0); 409 #endif 410 411 /* Discover wedges on this disk. */ 412 dkwedge_discover(&wd->sc_dk); 413 } 414 415 int 416 wdactivate(struct device *self, enum devact act) 417 { 418 int rv = 0; 419 420 switch (act) { 421 case DVACT_ACTIVATE: 422 rv = EOPNOTSUPP; 423 break; 424 425 case DVACT_DEACTIVATE: 426 /* 427 * Nothing to do; we key off the device's DVF_ACTIVATE. 428 */ 429 break; 430 } 431 return (rv); 432 } 433 434 int 435 wddetach(struct device *self, int flags) 436 { 437 struct wd_softc *sc = (struct wd_softc *)self; 438 int s, bmaj, cmaj, i, mn; 439 440 /* locate the major number */ 441 bmaj = bdevsw_lookup_major(&wd_bdevsw); 442 cmaj = cdevsw_lookup_major(&wd_cdevsw); 443 444 /* Nuke the vnodes for any open instances. */ 445 for (i = 0; i < MAXPARTITIONS; i++) { 446 mn = WDMINOR(self->dv_unit, i); 447 vdevgone(bmaj, mn, mn, VBLK); 448 vdevgone(cmaj, mn, mn, VCHR); 449 } 450 451 /* Delete all of our wedges. */ 452 dkwedge_delall(&sc->sc_dk); 453 454 s = splbio(); 455 456 /* Kill off any queued buffers. */ 457 bufq_drain(&sc->sc_q); 458 459 bufq_free(&sc->sc_q); 460 sc->atabus->ata_killpending(sc->drvp); 461 462 splx(s); 463 464 /* Detach disk. */ 465 disk_detach(&sc->sc_dk); 466 467 #ifdef WD_SOFTBADSECT 468 /* Clean out the bad sector list */ 469 while (!SLIST_EMPTY(&sc->sc_bslist)) { 470 void *head = SLIST_FIRST(&sc->sc_bslist); 471 SLIST_REMOVE_HEAD(&sc->sc_bslist, dbs_next); 472 free(head, M_TEMP); 473 } 474 sc->sc_bscount = 0; 475 #endif 476 477 /* Get rid of the shutdown hook. */ 478 if (sc->sc_sdhook != NULL) 479 shutdownhook_disestablish(sc->sc_sdhook); 480 481 #if NRND > 0 482 /* Unhook the entropy source. */ 483 rnd_detach_source(&sc->rnd_source); 484 #endif 485 486 sc->drvp->drive_flags = 0; /* no drive any more here */ 487 488 return (0); 489 } 490 491 /* 492 * Read/write routine for a buffer. Validates the arguments and schedules the 493 * transfer. Does not wait for the transfer to complete. 494 */ 495 void 496 wdstrategy(struct buf *bp) 497 { 498 struct wd_softc *wd = device_lookup(&wd_cd, WDUNIT(bp->b_dev)); 499 struct disklabel *lp = wd->sc_dk.dk_label; 500 daddr_t blkno; 501 int s; 502 503 ATADEBUG_PRINT(("wdstrategy (%s)\n", wd->sc_dev.dv_xname), 504 DEBUG_XFERS); 505 506 /* Valid request? */ 507 if (bp->b_blkno < 0 || 508 (bp->b_bcount % lp->d_secsize) != 0 || 509 (bp->b_bcount / lp->d_secsize) >= (1 << NBBY)) { 510 bp->b_error = EINVAL; 511 goto bad; 512 } 513 514 /* If device invalidated (e.g. media change, door open), error. */ 515 if ((wd->sc_flags & WDF_LOADED) == 0) { 516 bp->b_error = EIO; 517 goto bad; 518 } 519 520 /* If it's a null transfer, return immediately. */ 521 if (bp->b_bcount == 0) 522 goto done; 523 524 /* 525 * Do bounds checking, adjust transfer. if error, process. 526 * If end of partition, just return. 527 */ 528 if (WDPART(bp->b_dev) == RAW_PART) { 529 if (bounds_check_with_mediasize(bp, DEV_BSIZE, 530 wd->sc_capacity) <= 0) 531 goto done; 532 } else { 533 if (bounds_check_with_label(&wd->sc_dk, bp, 534 (wd->sc_flags & (WDF_WLABEL|WDF_LABELLING)) != 0) <= 0) 535 goto done; 536 } 537 538 /* 539 * Now convert the block number to absolute and put it in 540 * terms of the device's logical block size. 541 */ 542 if (lp->d_secsize >= DEV_BSIZE) 543 blkno = bp->b_blkno / (lp->d_secsize / DEV_BSIZE); 544 else 545 blkno = bp->b_blkno * (DEV_BSIZE / lp->d_secsize); 546 547 if (WDPART(bp->b_dev) != RAW_PART) 548 blkno += lp->d_partitions[WDPART(bp->b_dev)].p_offset; 549 550 bp->b_rawblkno = blkno; 551 552 #ifdef WD_SOFTBADSECT 553 /* 554 * If the transfer about to be attempted contains only a block that 555 * is known to be bad then return an error for the transfer without 556 * even attempting to start a transfer up under the premis that we 557 * will just end up doing more retries for a transfer that will end 558 * up failing again. 559 * XXX:SMP - mutex required to protect with DIOCBSFLUSH 560 */ 561 if (__predict_false(!SLIST_EMPTY(&wd->sc_bslist))) { 562 struct disk_badsectors *dbs; 563 daddr_t maxblk = blkno + (bp->b_bcount >> DEV_BSHIFT) - 1; 564 565 SLIST_FOREACH(dbs, &wd->sc_bslist, dbs_next) 566 if ((dbs->dbs_min <= blkno && blkno <= dbs->dbs_max) || 567 (dbs->dbs_min <= maxblk && maxblk <= dbs->dbs_max)){ 568 bp->b_error = EIO; 569 goto bad; 570 } 571 } 572 #endif 573 574 /* Queue transfer on drive, activate drive and controller if idle. */ 575 s = splbio(); 576 BUFQ_PUT(&wd->sc_q, bp); 577 wdstart(wd); 578 splx(s); 579 return; 580 bad: 581 bp->b_flags |= B_ERROR; 582 done: 583 /* Toss transfer; we're done early. */ 584 bp->b_resid = bp->b_bcount; 585 biodone(bp); 586 } 587 588 /* 589 * Queue a drive for I/O. 590 */ 591 void 592 wdstart(void *arg) 593 { 594 struct wd_softc *wd = arg; 595 struct buf *bp = NULL; 596 597 ATADEBUG_PRINT(("wdstart %s\n", wd->sc_dev.dv_xname), 598 DEBUG_XFERS); 599 while (wd->openings > 0) { 600 601 /* Is there a buf for us ? */ 602 if ((bp = BUFQ_GET(&wd->sc_q)) == NULL) 603 return; 604 605 /* 606 * Make the command. First lock the device 607 */ 608 wd->openings--; 609 610 wd->retries = 0; 611 __wdstart(wd, bp); 612 } 613 } 614 615 static void 616 wd_split_mod15_write(struct buf *bp) 617 { 618 struct buf *obp = bp->b_private; 619 struct wd_softc *sc = wd_cd.cd_devs[DISKUNIT(obp->b_dev)]; 620 621 if (__predict_false(bp->b_flags & B_ERROR) != 0) { 622 /* 623 * Propagate the error. If this was the first half of 624 * the original transfer, make sure to account for that 625 * in the residual. 626 */ 627 if (bp->b_data == obp->b_data) 628 bp->b_resid += bp->b_bcount; 629 goto done; 630 } 631 632 /* 633 * If this was the second half of the transfer, we're all done! 634 */ 635 if (bp->b_data != obp->b_data) 636 goto done; 637 638 /* 639 * Advance the pointer to the second half and issue that command 640 * using the same opening. 641 */ 642 bp->b_flags = obp->b_flags | B_CALL; 643 bp->b_data += bp->b_bcount; 644 bp->b_blkno += (bp->b_bcount / 512); 645 bp->b_rawblkno += (bp->b_bcount / 512); 646 __wdstart(sc, bp); 647 return; 648 649 done: 650 obp->b_flags |= (bp->b_flags & (B_EINTR|B_ERROR)); 651 obp->b_error = bp->b_error; 652 obp->b_resid = bp->b_resid; 653 pool_put(&bufpool, bp); 654 biodone(obp); 655 sc->openings++; 656 /* wddone() will call wdstart() */ 657 } 658 659 void 660 __wdstart(struct wd_softc *wd, struct buf *bp) 661 { 662 663 /* 664 * Deal with the "split mod15 write" quirk. We just divide the 665 * transfer in two, doing the first half and then then second half 666 * with the same command opening. 667 * 668 * Note we MUST do this here, because we can't let insertion 669 * into the bufq cause the transfers to be re-merged. 670 */ 671 if (__predict_false((wd->sc_quirks & WD_QUIRK_SPLIT_MOD15_WRITE) != 0 && 672 (bp->b_flags & B_READ) == 0 && 673 bp->b_bcount > 512 && 674 ((bp->b_bcount / 512) % 15) == 1)) { 675 struct buf *nbp; 676 677 /* already at splbio */ 678 nbp = pool_get(&bufpool, PR_NOWAIT); 679 if (__predict_false(nbp == NULL)) { 680 /* No memory -- fail the iop. */ 681 bp->b_error = ENOMEM; 682 bp->b_flags |= B_ERROR; 683 bp->b_resid = bp->b_bcount; 684 biodone(bp); 685 wd->openings++; 686 return; 687 } 688 689 BUF_INIT(nbp); 690 nbp->b_error = 0; 691 nbp->b_proc = bp->b_proc; 692 nbp->b_vp = NULLVP; 693 nbp->b_dev = bp->b_dev; 694 695 nbp->b_bcount = bp->b_bcount / 2; 696 nbp->b_bufsize = bp->b_bcount / 2; 697 nbp->b_data = bp->b_data; 698 699 nbp->b_blkno = bp->b_blkno; 700 nbp->b_rawblkno = bp->b_rawblkno; 701 702 nbp->b_flags = bp->b_flags | B_CALL; 703 nbp->b_iodone = wd_split_mod15_write; 704 705 /* Put ptr to orig buf in b_private and use new buf */ 706 nbp->b_private = bp; 707 708 BIO_COPYPRIO(nbp, bp); 709 710 bp = nbp; 711 } 712 713 wd->sc_wdc_bio.blkno = bp->b_rawblkno; 714 wd->sc_wdc_bio.blkdone =0; 715 wd->sc_bp = bp; 716 /* 717 * If we're retrying, retry in single-sector mode. This will give us 718 * the sector number of the problem, and will eventually allow the 719 * transfer to succeed. 720 */ 721 if (wd->retries >= WDIORETRIES_SINGLE) 722 wd->sc_wdc_bio.flags = ATA_SINGLE; 723 else 724 wd->sc_wdc_bio.flags = 0; 725 if (wd->sc_flags & WDF_LBA48 && 726 (wd->sc_wdc_bio.blkno > LBA48_THRESHOLD || 727 (wd->sc_quirks & WD_QUIRK_FORCE_LBA48) != 0)) 728 wd->sc_wdc_bio.flags |= ATA_LBA48; 729 if (wd->sc_flags & WDF_LBA) 730 wd->sc_wdc_bio.flags |= ATA_LBA; 731 if (bp->b_flags & B_READ) 732 wd->sc_wdc_bio.flags |= ATA_READ; 733 wd->sc_wdc_bio.bcount = bp->b_bcount; 734 wd->sc_wdc_bio.databuf = bp->b_data; 735 /* Instrumentation. */ 736 disk_busy(&wd->sc_dk); 737 switch (wd->atabus->ata_bio(wd->drvp, &wd->sc_wdc_bio)) { 738 case ATACMD_TRY_AGAIN: 739 callout_reset(&wd->sc_restart_ch, hz, wdrestart, wd); 740 break; 741 case ATACMD_QUEUED: 742 case ATACMD_COMPLETE: 743 break; 744 default: 745 panic("__wdstart: bad return code from ata_bio()"); 746 } 747 } 748 749 void 750 wddone(void *v) 751 { 752 struct wd_softc *wd = v; 753 struct buf *bp = wd->sc_bp; 754 const char *errmsg; 755 int do_perror = 0; 756 ATADEBUG_PRINT(("wddone %s\n", wd->sc_dev.dv_xname), 757 DEBUG_XFERS); 758 759 if (bp == NULL) 760 return; 761 bp->b_resid = wd->sc_wdc_bio.bcount; 762 switch (wd->sc_wdc_bio.error) { 763 case ERR_DMA: 764 errmsg = "DMA error"; 765 goto retry; 766 case ERR_DF: 767 errmsg = "device fault"; 768 goto retry; 769 case TIMEOUT: 770 errmsg = "device timeout"; 771 goto retry; 772 case ERR_RESET: 773 errmsg = "channel reset"; 774 goto retry2; 775 case ERROR: 776 /* Don't care about media change bits */ 777 if (wd->sc_wdc_bio.r_error != 0 && 778 (wd->sc_wdc_bio.r_error & ~(WDCE_MC | WDCE_MCR)) == 0) 779 goto noerror; 780 errmsg = "error"; 781 do_perror = 1; 782 retry: /* Just reset and retry. Can we do more ? */ 783 (*wd->atabus->ata_reset_drive)(wd->drvp, AT_RST_NOCMD); 784 retry2: 785 diskerr(bp, "wd", errmsg, LOG_PRINTF, 786 wd->sc_wdc_bio.blkdone, wd->sc_dk.dk_label); 787 if (wd->retries < WDIORETRIES) 788 printf(", retrying\n"); 789 if (do_perror) 790 wdperror(wd); 791 if (wd->retries < WDIORETRIES) { 792 wd->retries++; 793 callout_reset(&wd->sc_restart_ch, RECOVERYTIME, 794 wdrestart, wd); 795 return; 796 } 797 printf("\n"); 798 799 #ifdef WD_SOFTBADSECT 800 /* 801 * Not all errors indicate a failed block but those that do, 802 * put the block on the bad-block list for the device. Only 803 * do this for reads because the drive should do it for writes, 804 * itself, according to Manuel. 805 */ 806 if ((bp->b_flags & B_READ) && 807 ((wd->drvp->ata_vers >= 4 && wd->sc_wdc_bio.r_error & 64) || 808 (wd->drvp->ata_vers < 4 && wd->sc_wdc_bio.r_error & 192))) { 809 struct disk_badsectors *dbs; 810 811 dbs = malloc(sizeof *dbs, M_TEMP, M_WAITOK); 812 dbs->dbs_min = bp->b_rawblkno; 813 dbs->dbs_max = dbs->dbs_min + (bp->b_bcount >> DEV_BSHIFT) - 1; 814 microtime(&dbs->dbs_failedat); 815 SLIST_INSERT_HEAD(&wd->sc_bslist, dbs, dbs_next); 816 wd->sc_bscount++; 817 } 818 #endif 819 bp->b_flags |= B_ERROR; 820 bp->b_error = EIO; 821 break; 822 case NOERROR: 823 noerror: if ((wd->sc_wdc_bio.flags & ATA_CORR) || wd->retries > 0) 824 printf("%s: soft error (corrected)\n", 825 wd->sc_dev.dv_xname); 826 break; 827 case ERR_NODEV: 828 bp->b_flags |= B_ERROR; 829 bp->b_error = EIO; 830 break; 831 } 832 disk_unbusy(&wd->sc_dk, (bp->b_bcount - bp->b_resid), 833 (bp->b_flags & B_READ)); 834 #if NRND > 0 835 rnd_add_uint32(&wd->rnd_source, bp->b_blkno); 836 #endif 837 /* XXX Yuck, but we don't want to increment openings in this case */ 838 if (__predict_false((bp->b_flags & B_CALL) != 0 && 839 bp->b_iodone == wd_split_mod15_write)) 840 biodone(bp); 841 else { 842 biodone(bp); 843 wd->openings++; 844 } 845 wdstart(wd); 846 } 847 848 void 849 wdrestart(void *v) 850 { 851 struct wd_softc *wd = v; 852 struct buf *bp = wd->sc_bp; 853 int s; 854 ATADEBUG_PRINT(("wdrestart %s\n", wd->sc_dev.dv_xname), 855 DEBUG_XFERS); 856 857 s = splbio(); 858 __wdstart(v, bp); 859 splx(s); 860 } 861 862 int 863 wdread(dev_t dev, struct uio *uio, int flags) 864 { 865 866 ATADEBUG_PRINT(("wdread\n"), DEBUG_XFERS); 867 return (physio(wdstrategy, NULL, dev, B_READ, minphys, uio)); 868 } 869 870 int 871 wdwrite(dev_t dev, struct uio *uio, int flags) 872 { 873 874 ATADEBUG_PRINT(("wdwrite\n"), DEBUG_XFERS); 875 return (physio(wdstrategy, NULL, dev, B_WRITE, minphys, uio)); 876 } 877 878 int 879 wdopen(dev_t dev, int flag, int fmt, struct proc *p) 880 { 881 struct wd_softc *wd; 882 int part, error; 883 884 ATADEBUG_PRINT(("wdopen\n"), DEBUG_FUNCS); 885 wd = device_lookup(&wd_cd, WDUNIT(dev)); 886 if (wd == NULL) 887 return (ENXIO); 888 889 if ((wd->sc_dev.dv_flags & DVF_ACTIVE) == 0) 890 return (ENODEV); 891 892 part = WDPART(dev); 893 894 if ((error = lockmgr(&wd->sc_dk.dk_openlock, LK_EXCLUSIVE, NULL)) != 0) 895 return (error); 896 897 /* 898 * If there are wedges, and this is not RAW_PART, then we 899 * need to fail. 900 */ 901 if (wd->sc_dk.dk_nwedges != 0 && part != RAW_PART) { 902 error = EBUSY; 903 goto bad1; 904 } 905 906 /* 907 * If this is the first open of this device, add a reference 908 * to the adapter. 909 */ 910 if (wd->sc_dk.dk_openmask == 0 && 911 (error = wd->atabus->ata_addref(wd->drvp)) != 0) 912 goto bad1; 913 914 if (wd->sc_dk.dk_openmask != 0) { 915 /* 916 * If any partition is open, but the disk has been invalidated, 917 * disallow further opens. 918 */ 919 if ((wd->sc_flags & WDF_LOADED) == 0) { 920 error = EIO; 921 goto bad2; 922 } 923 } else { 924 if ((wd->sc_flags & WDF_LOADED) == 0) { 925 wd->sc_flags |= WDF_LOADED; 926 927 /* Load the physical device parameters. */ 928 wd_get_params(wd, AT_WAIT, &wd->sc_params); 929 930 /* Load the partition info if not already loaded. */ 931 wdgetdisklabel(wd); 932 } 933 } 934 935 /* Check that the partition exists. */ 936 if (part != RAW_PART && 937 (part >= wd->sc_dk.dk_label->d_npartitions || 938 wd->sc_dk.dk_label->d_partitions[part].p_fstype == FS_UNUSED)) { 939 error = ENXIO; 940 goto bad2; 941 } 942 943 /* Insure only one open at a time. */ 944 switch (fmt) { 945 case S_IFCHR: 946 wd->sc_dk.dk_copenmask |= (1 << part); 947 break; 948 case S_IFBLK: 949 wd->sc_dk.dk_bopenmask |= (1 << part); 950 break; 951 } 952 wd->sc_dk.dk_openmask = 953 wd->sc_dk.dk_copenmask | wd->sc_dk.dk_bopenmask; 954 955 (void) lockmgr(&wd->sc_dk.dk_openlock, LK_RELEASE, NULL); 956 return 0; 957 958 bad2: 959 if (wd->sc_dk.dk_openmask == 0) 960 wd->atabus->ata_delref(wd->drvp); 961 bad1: 962 (void) lockmgr(&wd->sc_dk.dk_openlock, LK_RELEASE, NULL); 963 return error; 964 } 965 966 int 967 wdclose(dev_t dev, int flag, int fmt, struct proc *p) 968 { 969 struct wd_softc *wd = device_lookup(&wd_cd, WDUNIT(dev)); 970 int part = WDPART(dev); 971 int error; 972 973 ATADEBUG_PRINT(("wdclose\n"), DEBUG_FUNCS); 974 975 if ((error = lockmgr(&wd->sc_dk.dk_openlock, LK_EXCLUSIVE, NULL)) != 0) 976 return error; 977 978 switch (fmt) { 979 case S_IFCHR: 980 wd->sc_dk.dk_copenmask &= ~(1 << part); 981 break; 982 case S_IFBLK: 983 wd->sc_dk.dk_bopenmask &= ~(1 << part); 984 break; 985 } 986 wd->sc_dk.dk_openmask = 987 wd->sc_dk.dk_copenmask | wd->sc_dk.dk_bopenmask; 988 989 if (wd->sc_dk.dk_openmask == 0) { 990 wd_flushcache(wd, AT_WAIT); 991 992 if (! (wd->sc_flags & WDF_KLABEL)) 993 wd->sc_flags &= ~WDF_LOADED; 994 995 wd->atabus->ata_delref(wd->drvp); 996 } 997 998 (void) lockmgr(&wd->sc_dk.dk_openlock, LK_RELEASE, NULL); 999 return 0; 1000 } 1001 1002 void 1003 wdgetdefaultlabel(struct wd_softc *wd, struct disklabel *lp) 1004 { 1005 1006 ATADEBUG_PRINT(("wdgetdefaultlabel\n"), DEBUG_FUNCS); 1007 memset(lp, 0, sizeof(struct disklabel)); 1008 1009 lp->d_secsize = DEV_BSIZE; 1010 lp->d_ntracks = wd->sc_params.atap_heads; 1011 lp->d_nsectors = wd->sc_params.atap_sectors; 1012 lp->d_ncylinders = (wd->sc_flags & WDF_LBA) ? wd->sc_capacity / 1013 (wd->sc_params.atap_heads * wd->sc_params.atap_sectors) : 1014 wd->sc_params.atap_cylinders; 1015 lp->d_secpercyl = lp->d_ntracks * lp->d_nsectors; 1016 1017 if (strcmp(wd->sc_params.atap_model, "ST506") == 0) 1018 lp->d_type = DTYPE_ST506; 1019 else 1020 lp->d_type = DTYPE_ESDI; 1021 1022 strncpy(lp->d_typename, wd->sc_params.atap_model, 16); 1023 strncpy(lp->d_packname, "fictitious", 16); 1024 if (wd->sc_capacity > UINT32_MAX) 1025 lp->d_secperunit = UINT32_MAX; 1026 else 1027 lp->d_secperunit = wd->sc_capacity; 1028 lp->d_rpm = 3600; 1029 lp->d_interleave = 1; 1030 lp->d_flags = 0; 1031 1032 lp->d_partitions[RAW_PART].p_offset = 0; 1033 lp->d_partitions[RAW_PART].p_size = 1034 lp->d_secperunit * (lp->d_secsize / DEV_BSIZE); 1035 lp->d_partitions[RAW_PART].p_fstype = FS_UNUSED; 1036 lp->d_npartitions = RAW_PART + 1; 1037 1038 lp->d_magic = DISKMAGIC; 1039 lp->d_magic2 = DISKMAGIC; 1040 lp->d_checksum = dkcksum(lp); 1041 } 1042 1043 /* 1044 * Fabricate a default disk label, and try to read the correct one. 1045 */ 1046 void 1047 wdgetdisklabel(struct wd_softc *wd) 1048 { 1049 struct disklabel *lp = wd->sc_dk.dk_label; 1050 const char *errstring; 1051 int s; 1052 1053 ATADEBUG_PRINT(("wdgetdisklabel\n"), DEBUG_FUNCS); 1054 1055 memset(wd->sc_dk.dk_cpulabel, 0, sizeof(struct cpu_disklabel)); 1056 1057 wdgetdefaultlabel(wd, lp); 1058 1059 wd->sc_badsect[0] = -1; 1060 1061 if (wd->drvp->state > RESET) { 1062 s = splbio(); 1063 wd->drvp->drive_flags |= DRIVE_RESET; 1064 splx(s); 1065 } 1066 errstring = readdisklabel(MAKEWDDEV(0, wd->sc_dev.dv_unit, RAW_PART), 1067 wdstrategy, lp, wd->sc_dk.dk_cpulabel); 1068 if (errstring) { 1069 /* 1070 * This probably happened because the drive's default 1071 * geometry doesn't match the DOS geometry. We 1072 * assume the DOS geometry is now in the label and try 1073 * again. XXX This is a kluge. 1074 */ 1075 if (wd->drvp->state > RESET) { 1076 s = splbio(); 1077 wd->drvp->drive_flags |= DRIVE_RESET; 1078 splx(s); 1079 } 1080 errstring = readdisklabel(MAKEWDDEV(0, wd->sc_dev.dv_unit, 1081 RAW_PART), wdstrategy, lp, wd->sc_dk.dk_cpulabel); 1082 } 1083 if (errstring) { 1084 printf("%s: %s\n", wd->sc_dev.dv_xname, errstring); 1085 return; 1086 } 1087 1088 if (wd->drvp->state > RESET) { 1089 s = splbio(); 1090 wd->drvp->drive_flags |= DRIVE_RESET; 1091 splx(s); 1092 } 1093 #ifdef HAS_BAD144_HANDLING 1094 if ((lp->d_flags & D_BADSECT) != 0) 1095 bad144intern(wd); 1096 #endif 1097 } 1098 1099 void 1100 wdperror(const struct wd_softc *wd) 1101 { 1102 static const char *const errstr0_3[] = {"address mark not found", 1103 "track 0 not found", "aborted command", "media change requested", 1104 "id not found", "media changed", "uncorrectable data error", 1105 "bad block detected"}; 1106 static const char *const errstr4_5[] = { 1107 "obsolete (address mark not found)", 1108 "no media/write protected", "aborted command", 1109 "media change requested", "id not found", "media changed", 1110 "uncorrectable data error", "interface CRC error"}; 1111 const char *const *errstr; 1112 int i; 1113 const char *sep = ""; 1114 1115 const char *devname = wd->sc_dev.dv_xname; 1116 struct ata_drive_datas *drvp = wd->drvp; 1117 int errno = wd->sc_wdc_bio.r_error; 1118 1119 if (drvp->ata_vers >= 4) 1120 errstr = errstr4_5; 1121 else 1122 errstr = errstr0_3; 1123 1124 printf("%s: (", devname); 1125 1126 if (errno == 0) 1127 printf("error not notified"); 1128 1129 for (i = 0; i < 8; i++) { 1130 if (errno & (1 << i)) { 1131 printf("%s%s", sep, errstr[i]); 1132 sep = ", "; 1133 } 1134 } 1135 printf(")\n"); 1136 } 1137 1138 int 1139 wdioctl(dev_t dev, u_long xfer, caddr_t addr, int flag, struct proc *p) 1140 { 1141 struct wd_softc *wd = device_lookup(&wd_cd, WDUNIT(dev)); 1142 int error = 0, s; 1143 #ifdef __HAVE_OLD_DISKLABEL 1144 struct disklabel *newlabel = NULL; 1145 #endif 1146 1147 ATADEBUG_PRINT(("wdioctl\n"), DEBUG_FUNCS); 1148 1149 if ((wd->sc_flags & WDF_LOADED) == 0) 1150 return EIO; 1151 1152 switch (xfer) { 1153 #ifdef HAS_BAD144_HANDLING 1154 case DIOCSBAD: 1155 if ((flag & FWRITE) == 0) 1156 return EBADF; 1157 wd->sc_dk.dk_cpulabel->bad = *(struct dkbad *)addr; 1158 wd->sc_dk.dk_label->d_flags |= D_BADSECT; 1159 bad144intern(wd); 1160 return 0; 1161 #endif 1162 #ifdef WD_SOFTBADSECT 1163 case DIOCBSLIST : 1164 { 1165 u_int32_t count, missing, skip; 1166 struct disk_badsecinfo dbsi; 1167 struct disk_badsectors *dbs; 1168 size_t available; 1169 caddr_t laddr; 1170 1171 dbsi = *(struct disk_badsecinfo *)addr; 1172 missing = wd->sc_bscount; 1173 count = 0; 1174 available = dbsi.dbsi_bufsize; 1175 skip = dbsi.dbsi_skip; 1176 laddr = dbsi.dbsi_buffer; 1177 1178 /* 1179 * We start this loop with the expectation that all of the 1180 * entries will be missed and decrement this counter each 1181 * time we either skip over one (already copied out) or 1182 * we actually copy it back to user space. The structs 1183 * holding the bad sector information are copied directly 1184 * back to user space whilst the summary is returned via 1185 * the struct passed in via the ioctl. 1186 */ 1187 SLIST_FOREACH(dbs, &wd->sc_bslist, dbs_next) { 1188 if (skip > 0) { 1189 missing--; 1190 skip--; 1191 continue; 1192 } 1193 if (available < sizeof(*dbs)) 1194 break; 1195 available -= sizeof(*dbs); 1196 copyout(dbs, laddr, sizeof(*dbs)); 1197 laddr += sizeof(*dbs); 1198 missing--; 1199 count++; 1200 } 1201 dbsi.dbsi_left = missing; 1202 dbsi.dbsi_copied = count; 1203 *(struct disk_badsecinfo *)addr = dbsi; 1204 return 0; 1205 } 1206 1207 case DIOCBSFLUSH : 1208 /* Clean out the bad sector list */ 1209 while (!SLIST_EMPTY(&wd->sc_bslist)) { 1210 void *head = SLIST_FIRST(&wd->sc_bslist); 1211 SLIST_REMOVE_HEAD(&wd->sc_bslist, dbs_next); 1212 free(head, M_TEMP); 1213 } 1214 wd->sc_bscount = 0; 1215 return 0; 1216 #endif 1217 case DIOCGDINFO: 1218 *(struct disklabel *)addr = *(wd->sc_dk.dk_label); 1219 return 0; 1220 #ifdef __HAVE_OLD_DISKLABEL 1221 case ODIOCGDINFO: 1222 newlabel = malloc(sizeof *newlabel, M_TEMP, M_WAITOK); 1223 if (newlabel == NULL) 1224 return EIO; 1225 *newlabel = *(wd->sc_dk.dk_label); 1226 if (newlabel->d_npartitions <= OLDMAXPARTITIONS) 1227 memcpy(addr, newlabel, sizeof (struct olddisklabel)); 1228 else 1229 error = ENOTTY; 1230 free(newlabel, M_TEMP); 1231 return error; 1232 #endif 1233 1234 case DIOCGPART: 1235 ((struct partinfo *)addr)->disklab = wd->sc_dk.dk_label; 1236 ((struct partinfo *)addr)->part = 1237 &wd->sc_dk.dk_label->d_partitions[WDPART(dev)]; 1238 return 0; 1239 1240 case DIOCWDINFO: 1241 case DIOCSDINFO: 1242 #ifdef __HAVE_OLD_DISKLABEL 1243 case ODIOCWDINFO: 1244 case ODIOCSDINFO: 1245 #endif 1246 { 1247 struct disklabel *lp; 1248 1249 if ((flag & FWRITE) == 0) 1250 return EBADF; 1251 1252 #ifdef __HAVE_OLD_DISKLABEL 1253 if (xfer == ODIOCSDINFO || xfer == ODIOCWDINFO) { 1254 newlabel = malloc(sizeof *newlabel, M_TEMP, M_WAITOK); 1255 if (newlabel == NULL) 1256 return EIO; 1257 memset(newlabel, 0, sizeof newlabel); 1258 memcpy(newlabel, addr, sizeof (struct olddisklabel)); 1259 lp = newlabel; 1260 } else 1261 #endif 1262 lp = (struct disklabel *)addr; 1263 1264 if ((error = lockmgr(&wd->sc_dk.dk_openlock, LK_EXCLUSIVE, 1265 NULL)) != 0) 1266 goto bad; 1267 wd->sc_flags |= WDF_LABELLING; 1268 1269 error = setdisklabel(wd->sc_dk.dk_label, 1270 lp, /*wd->sc_dk.dk_openmask : */0, 1271 wd->sc_dk.dk_cpulabel); 1272 if (error == 0) { 1273 if (wd->drvp->state > RESET) { 1274 s = splbio(); 1275 wd->drvp->drive_flags |= DRIVE_RESET; 1276 splx(s); 1277 } 1278 if (xfer == DIOCWDINFO 1279 #ifdef __HAVE_OLD_DISKLABEL 1280 || xfer == ODIOCWDINFO 1281 #endif 1282 ) 1283 error = writedisklabel(WDLABELDEV(dev), 1284 wdstrategy, wd->sc_dk.dk_label, 1285 wd->sc_dk.dk_cpulabel); 1286 } 1287 1288 wd->sc_flags &= ~WDF_LABELLING; 1289 (void) lockmgr(&wd->sc_dk.dk_openlock, LK_RELEASE, NULL); 1290 bad: 1291 #ifdef __HAVE_OLD_DISKLABEL 1292 if (newlabel != NULL) 1293 free(newlabel, M_TEMP); 1294 #endif 1295 return error; 1296 } 1297 1298 case DIOCKLABEL: 1299 if (*(int *)addr) 1300 wd->sc_flags |= WDF_KLABEL; 1301 else 1302 wd->sc_flags &= ~WDF_KLABEL; 1303 return 0; 1304 1305 case DIOCWLABEL: 1306 if ((flag & FWRITE) == 0) 1307 return EBADF; 1308 if (*(int *)addr) 1309 wd->sc_flags |= WDF_WLABEL; 1310 else 1311 wd->sc_flags &= ~WDF_WLABEL; 1312 return 0; 1313 1314 case DIOCGDEFLABEL: 1315 wdgetdefaultlabel(wd, (struct disklabel *)addr); 1316 return 0; 1317 #ifdef __HAVE_OLD_DISKLABEL 1318 case ODIOCGDEFLABEL: 1319 newlabel = malloc(sizeof *newlabel, M_TEMP, M_WAITOK); 1320 if (newlabel == NULL) 1321 return EIO; 1322 wdgetdefaultlabel(wd, newlabel); 1323 if (newlabel->d_npartitions <= OLDMAXPARTITIONS) 1324 memcpy(addr, &newlabel, sizeof (struct olddisklabel)); 1325 else 1326 error = ENOTTY; 1327 free(newlabel, M_TEMP); 1328 return error; 1329 #endif 1330 1331 #ifdef notyet 1332 case DIOCWFORMAT: 1333 if ((flag & FWRITE) == 0) 1334 return EBADF; 1335 { 1336 register struct format_op *fop; 1337 struct iovec aiov; 1338 struct uio auio; 1339 1340 fop = (struct format_op *)addr; 1341 aiov.iov_base = fop->df_buf; 1342 aiov.iov_len = fop->df_count; 1343 auio.uio_iov = &aiov; 1344 auio.uio_iovcnt = 1; 1345 auio.uio_resid = fop->df_count; 1346 auio.uio_segflg = 0; 1347 auio.uio_offset = 1348 fop->df_startblk * wd->sc_dk.dk_label->d_secsize; 1349 auio.uio_procp = p; 1350 error = physio(wdformat, NULL, dev, B_WRITE, minphys, 1351 &auio); 1352 fop->df_count -= auio.uio_resid; 1353 fop->df_reg[0] = wdc->sc_status; 1354 fop->df_reg[1] = wdc->sc_error; 1355 return error; 1356 } 1357 #endif 1358 case DIOCGCACHE: 1359 return wd_getcache(wd, (int *)addr); 1360 1361 case DIOCSCACHE: 1362 return wd_setcache(wd, *(int *)addr); 1363 1364 case DIOCCACHESYNC: 1365 return wd_flushcache(wd, AT_WAIT); 1366 1367 case ATAIOCCOMMAND: 1368 /* 1369 * Make sure this command is (relatively) safe first 1370 */ 1371 if ((((atareq_t *) addr)->flags & ATACMD_READ) == 0 && 1372 (flag & FWRITE) == 0) 1373 return (EBADF); 1374 { 1375 struct wd_ioctl *wi; 1376 atareq_t *atareq = (atareq_t *) addr; 1377 int error1; 1378 1379 wi = wi_get(); 1380 wi->wi_softc = wd; 1381 wi->wi_atareq = *atareq; 1382 1383 if (atareq->datalen && atareq->flags & 1384 (ATACMD_READ | ATACMD_WRITE)) { 1385 wi->wi_iov.iov_base = atareq->databuf; 1386 wi->wi_iov.iov_len = atareq->datalen; 1387 wi->wi_uio.uio_iov = &wi->wi_iov; 1388 wi->wi_uio.uio_iovcnt = 1; 1389 wi->wi_uio.uio_resid = atareq->datalen; 1390 wi->wi_uio.uio_offset = 0; 1391 wi->wi_uio.uio_segflg = UIO_USERSPACE; 1392 wi->wi_uio.uio_rw = 1393 (atareq->flags & ATACMD_READ) ? B_READ : B_WRITE; 1394 wi->wi_uio.uio_procp = p; 1395 error1 = physio(wdioctlstrategy, &wi->wi_bp, dev, 1396 (atareq->flags & ATACMD_READ) ? B_READ : B_WRITE, 1397 minphys, &wi->wi_uio); 1398 } else { 1399 /* No need to call physio if we don't have any 1400 user data */ 1401 wi->wi_bp.b_flags = 0; 1402 wi->wi_bp.b_data = 0; 1403 wi->wi_bp.b_bcount = 0; 1404 wi->wi_bp.b_dev = 0; 1405 wi->wi_bp.b_proc = p; 1406 wdioctlstrategy(&wi->wi_bp); 1407 error1 = wi->wi_bp.b_error; 1408 } 1409 *atareq = wi->wi_atareq; 1410 wi_free(wi); 1411 return(error1); 1412 } 1413 1414 case DIOCAWEDGE: 1415 { 1416 struct dkwedge_info *dkw = (void *) addr; 1417 1418 if ((flag & FWRITE) == 0) 1419 return (EBADF); 1420 1421 /* If the ioctl happens here, the parent is us. */ 1422 strcpy(dkw->dkw_parent, wd->sc_dev.dv_xname); 1423 return (dkwedge_add(dkw)); 1424 } 1425 1426 case DIOCDWEDGE: 1427 { 1428 struct dkwedge_info *dkw = (void *) addr; 1429 1430 if ((flag & FWRITE) == 0) 1431 return (EBADF); 1432 1433 /* If the ioctl happens here, the parent is us. */ 1434 strcpy(dkw->dkw_parent, wd->sc_dev.dv_xname); 1435 return (dkwedge_del(dkw)); 1436 } 1437 1438 case DIOCLWEDGES: 1439 { 1440 struct dkwedge_list *dkwl = (void *) addr; 1441 1442 return (dkwedge_list(&wd->sc_dk, dkwl, p)); 1443 } 1444 1445 default: 1446 return ENOTTY; 1447 } 1448 1449 #ifdef DIAGNOSTIC 1450 panic("wdioctl: impossible"); 1451 #endif 1452 } 1453 1454 #ifdef B_FORMAT 1455 int 1456 wdformat(struct buf *bp) 1457 { 1458 1459 bp->b_flags |= B_FORMAT; 1460 return wdstrategy(bp); 1461 } 1462 #endif 1463 1464 int 1465 wdsize(dev_t dev) 1466 { 1467 struct wd_softc *wd; 1468 int part, omask; 1469 int size; 1470 1471 ATADEBUG_PRINT(("wdsize\n"), DEBUG_FUNCS); 1472 1473 wd = device_lookup(&wd_cd, WDUNIT(dev)); 1474 if (wd == NULL) 1475 return (-1); 1476 1477 part = WDPART(dev); 1478 omask = wd->sc_dk.dk_openmask & (1 << part); 1479 1480 if (omask == 0 && wdopen(dev, 0, S_IFBLK, NULL) != 0) 1481 return (-1); 1482 if (wd->sc_dk.dk_label->d_partitions[part].p_fstype != FS_SWAP) 1483 size = -1; 1484 else 1485 size = wd->sc_dk.dk_label->d_partitions[part].p_size * 1486 (wd->sc_dk.dk_label->d_secsize / DEV_BSIZE); 1487 if (omask == 0 && wdclose(dev, 0, S_IFBLK, NULL) != 0) 1488 return (-1); 1489 return (size); 1490 } 1491 1492 /* #define WD_DUMP_NOT_TRUSTED if you just want to watch */ 1493 static int wddoingadump = 0; 1494 static int wddumprecalibrated = 0; 1495 static int wddumpmulti = 1; 1496 1497 /* 1498 * Dump core after a system crash. 1499 */ 1500 int 1501 wddump(dev_t dev, daddr_t blkno, caddr_t va, size_t size) 1502 { 1503 struct wd_softc *wd; /* disk unit to do the I/O */ 1504 struct disklabel *lp; /* disk's disklabel */ 1505 int part, err; 1506 int nblks; /* total number of sectors left to write */ 1507 1508 /* Check if recursive dump; if so, punt. */ 1509 if (wddoingadump) 1510 return EFAULT; 1511 wddoingadump = 1; 1512 1513 wd = device_lookup(&wd_cd, WDUNIT(dev)); 1514 if (wd == NULL) 1515 return (ENXIO); 1516 1517 part = WDPART(dev); 1518 1519 /* Convert to disk sectors. Request must be a multiple of size. */ 1520 lp = wd->sc_dk.dk_label; 1521 if ((size % lp->d_secsize) != 0) 1522 return EFAULT; 1523 nblks = size / lp->d_secsize; 1524 blkno = blkno / (lp->d_secsize / DEV_BSIZE); 1525 1526 /* Check transfer bounds against partition size. */ 1527 if ((blkno < 0) || ((blkno + nblks) > lp->d_partitions[part].p_size)) 1528 return EINVAL; 1529 1530 /* Offset block number to start of partition. */ 1531 blkno += lp->d_partitions[part].p_offset; 1532 1533 /* Recalibrate, if first dump transfer. */ 1534 if (wddumprecalibrated == 0) { 1535 wddumpmulti = wd->sc_multi; 1536 wddumprecalibrated = 1; 1537 (*wd->atabus->ata_reset_drive)(wd->drvp, 1538 AT_POLL | AT_RST_EMERG); 1539 wd->drvp->state = RESET; 1540 } 1541 1542 while (nblks > 0) { 1543 wd->sc_bp = NULL; 1544 wd->sc_wdc_bio.blkno = blkno; 1545 wd->sc_wdc_bio.flags = ATA_POLL; 1546 if (wd->sc_flags & WDF_LBA48 && 1547 (blkno > LBA48_THRESHOLD || 1548 (wd->sc_quirks & WD_QUIRK_FORCE_LBA48) != 0)) 1549 wd->sc_wdc_bio.flags |= ATA_LBA48; 1550 if (wd->sc_flags & WDF_LBA) 1551 wd->sc_wdc_bio.flags |= ATA_LBA; 1552 wd->sc_wdc_bio.bcount = 1553 min(nblks, wddumpmulti) * lp->d_secsize; 1554 wd->sc_wdc_bio.databuf = va; 1555 #ifndef WD_DUMP_NOT_TRUSTED 1556 switch (wd->atabus->ata_bio(wd->drvp, &wd->sc_wdc_bio)) { 1557 case ATACMD_TRY_AGAIN: 1558 panic("wddump: try again"); 1559 break; 1560 case ATACMD_QUEUED: 1561 panic("wddump: polled command has been queued"); 1562 break; 1563 case ATACMD_COMPLETE: 1564 break; 1565 } 1566 switch(wd->sc_wdc_bio.error) { 1567 case TIMEOUT: 1568 printf("wddump: device timed out"); 1569 err = EIO; 1570 break; 1571 case ERR_DF: 1572 printf("wddump: drive fault"); 1573 err = EIO; 1574 break; 1575 case ERR_DMA: 1576 printf("wddump: DMA error"); 1577 err = EIO; 1578 break; 1579 case ERROR: 1580 printf("wddump: "); 1581 wdperror(wd); 1582 err = EIO; 1583 break; 1584 case NOERROR: 1585 err = 0; 1586 break; 1587 default: 1588 panic("wddump: unknown error type"); 1589 } 1590 if (err != 0) { 1591 printf("\n"); 1592 return err; 1593 } 1594 #else /* WD_DUMP_NOT_TRUSTED */ 1595 /* Let's just talk about this first... */ 1596 printf("wd%d: dump addr 0x%x, cylin %d, head %d, sector %d\n", 1597 unit, va, cylin, head, sector); 1598 delay(500 * 1000); /* half a second */ 1599 #endif 1600 1601 /* update block count */ 1602 nblks -= min(nblks, wddumpmulti); 1603 blkno += min(nblks, wddumpmulti); 1604 va += min(nblks, wddumpmulti) * lp->d_secsize; 1605 } 1606 1607 wddoingadump = 0; 1608 return 0; 1609 } 1610 1611 #ifdef HAS_BAD144_HANDLING 1612 /* 1613 * Internalize the bad sector table. 1614 */ 1615 void 1616 bad144intern(struct wd_softc *wd) 1617 { 1618 struct dkbad *bt = &wd->sc_dk.dk_cpulabel->bad; 1619 struct disklabel *lp = wd->sc_dk.dk_label; 1620 int i = 0; 1621 1622 ATADEBUG_PRINT(("bad144intern\n"), DEBUG_XFERS); 1623 1624 for (; i < NBT_BAD; i++) { 1625 if (bt->bt_bad[i].bt_cyl == 0xffff) 1626 break; 1627 wd->sc_badsect[i] = 1628 bt->bt_bad[i].bt_cyl * lp->d_secpercyl + 1629 (bt->bt_bad[i].bt_trksec >> 8) * lp->d_nsectors + 1630 (bt->bt_bad[i].bt_trksec & 0xff); 1631 } 1632 for (; i < NBT_BAD+1; i++) 1633 wd->sc_badsect[i] = -1; 1634 } 1635 #endif 1636 1637 int 1638 wd_get_params(struct wd_softc *wd, u_int8_t flags, struct ataparams *params) 1639 { 1640 switch (wd->atabus->ata_get_params(wd->drvp, flags, params)) { 1641 case CMD_AGAIN: 1642 return 1; 1643 case CMD_ERR: 1644 /* 1645 * We `know' there's a drive here; just assume it's old. 1646 * This geometry is only used to read the MBR and print a 1647 * (false) attach message. 1648 */ 1649 strncpy(params->atap_model, "ST506", 1650 sizeof params->atap_model); 1651 params->atap_config = ATA_CFG_FIXED; 1652 params->atap_cylinders = 1024; 1653 params->atap_heads = 8; 1654 params->atap_sectors = 17; 1655 params->atap_multi = 1; 1656 params->atap_capabilities1 = params->atap_capabilities2 = 0; 1657 wd->drvp->ata_vers = -1; /* Mark it as pre-ATA */ 1658 return 0; 1659 case CMD_OK: 1660 return 0; 1661 default: 1662 panic("wd_get_params: bad return code from ata_get_params"); 1663 /* NOTREACHED */ 1664 } 1665 } 1666 1667 int 1668 wd_getcache(struct wd_softc *wd, int *bitsp) 1669 { 1670 struct ataparams params; 1671 1672 if (wd_get_params(wd, AT_WAIT, ¶ms) != 0) 1673 return EIO; 1674 if (params.atap_cmd_set1 == 0x0000 || 1675 params.atap_cmd_set1 == 0xffff || 1676 (params.atap_cmd_set1 & WDC_CMD1_CACHE) == 0) { 1677 *bitsp = 0; 1678 return 0; 1679 } 1680 *bitsp = DKCACHE_WCHANGE | DKCACHE_READ; 1681 if (params.atap_cmd1_en & WDC_CMD1_CACHE) 1682 *bitsp |= DKCACHE_WRITE; 1683 1684 return 0; 1685 } 1686 1687 const char at_errbits[] = "\20\10ERROR\11TIMEOU\12DF"; 1688 1689 int 1690 wd_setcache(struct wd_softc *wd, int bits) 1691 { 1692 struct ataparams params; 1693 struct ata_command ata_c; 1694 1695 if (wd_get_params(wd, AT_WAIT, ¶ms) != 0) 1696 return EIO; 1697 1698 if (params.atap_cmd_set1 == 0x0000 || 1699 params.atap_cmd_set1 == 0xffff || 1700 (params.atap_cmd_set1 & WDC_CMD1_CACHE) == 0) 1701 return EOPNOTSUPP; 1702 1703 if ((bits & DKCACHE_READ) == 0 || 1704 (bits & DKCACHE_SAVE) != 0) 1705 return EOPNOTSUPP; 1706 1707 memset(&ata_c, 0, sizeof(struct ata_command)); 1708 ata_c.r_command = SET_FEATURES; 1709 ata_c.r_st_bmask = 0; 1710 ata_c.r_st_pmask = 0; 1711 ata_c.timeout = 30000; /* 30s timeout */ 1712 ata_c.flags = AT_WAIT; 1713 if (bits & DKCACHE_WRITE) 1714 ata_c.r_features = WDSF_WRITE_CACHE_EN; 1715 else 1716 ata_c.r_features = WDSF_WRITE_CACHE_DS; 1717 if (wd->atabus->ata_exec_command(wd->drvp, &ata_c) != ATACMD_COMPLETE) { 1718 printf("%s: wd_setcache command not complete\n", 1719 wd->sc_dev.dv_xname); 1720 return EIO; 1721 } 1722 if (ata_c.flags & (AT_ERROR | AT_TIMEOU | AT_DF)) { 1723 char sbuf[sizeof(at_errbits) + 64]; 1724 bitmask_snprintf(ata_c.flags, at_errbits, sbuf, sizeof(sbuf)); 1725 printf("%s: wd_setcache: status=%s\n", wd->sc_dev.dv_xname, 1726 sbuf); 1727 return EIO; 1728 } 1729 return 0; 1730 } 1731 1732 int 1733 wd_standby(struct wd_softc *wd, int flags) 1734 { 1735 struct ata_command ata_c; 1736 1737 memset(&ata_c, 0, sizeof(struct ata_command)); 1738 ata_c.r_command = WDCC_STANDBY_IMMED; 1739 ata_c.r_st_bmask = WDCS_DRDY; 1740 ata_c.r_st_pmask = WDCS_DRDY; 1741 ata_c.flags = flags; 1742 ata_c.timeout = 30000; /* 30s timeout */ 1743 if (wd->atabus->ata_exec_command(wd->drvp, &ata_c) != ATACMD_COMPLETE) { 1744 printf("%s: standby immediate command didn't complete\n", 1745 wd->sc_dev.dv_xname); 1746 return EIO; 1747 } 1748 if (ata_c.flags & AT_ERROR) { 1749 if (ata_c.r_error == WDCE_ABRT) /* command not supported */ 1750 return ENODEV; 1751 } 1752 if (ata_c.flags & (AT_ERROR | AT_TIMEOU | AT_DF)) { 1753 char sbuf[sizeof(at_errbits) + 64]; 1754 bitmask_snprintf(ata_c.flags, at_errbits, sbuf, sizeof(sbuf)); 1755 printf("%s: wd_standby: status=%s\n", wd->sc_dev.dv_xname, 1756 sbuf); 1757 return EIO; 1758 } 1759 return 0; 1760 } 1761 1762 int 1763 wd_flushcache(struct wd_softc *wd, int flags) 1764 { 1765 struct ata_command ata_c; 1766 1767 /* 1768 * WDCC_FLUSHCACHE is here since ATA-4, but some drives report 1769 * only ATA-2 and still support it. 1770 */ 1771 if (wd->drvp->ata_vers < 4 && 1772 ((wd->sc_params.atap_cmd_set2 & WDC_CMD2_FC) == 0 || 1773 wd->sc_params.atap_cmd_set2 == 0xffff)) 1774 return ENODEV; 1775 memset(&ata_c, 0, sizeof(struct ata_command)); 1776 if ((wd->sc_params.atap_cmd2_en & ATA_CMD2_LBA48) != 0 && 1777 (wd->sc_params.atap_cmd2_en & ATA_CMD2_FCE) != 0) 1778 ata_c.r_command = WDCC_FLUSHCACHE_EXT; 1779 else 1780 ata_c.r_command = WDCC_FLUSHCACHE; 1781 ata_c.r_st_bmask = WDCS_DRDY; 1782 ata_c.r_st_pmask = WDCS_DRDY; 1783 ata_c.flags = flags; 1784 ata_c.timeout = 30000; /* 30s timeout */ 1785 if (wd->atabus->ata_exec_command(wd->drvp, &ata_c) != ATACMD_COMPLETE) { 1786 printf("%s: flush cache command didn't complete\n", 1787 wd->sc_dev.dv_xname); 1788 return EIO; 1789 } 1790 if (ata_c.flags & AT_ERROR) { 1791 if (ata_c.r_error == WDCE_ABRT) /* command not supported */ 1792 return ENODEV; 1793 } 1794 if (ata_c.flags & (AT_ERROR | AT_TIMEOU | AT_DF)) { 1795 char sbuf[sizeof(at_errbits) + 64]; 1796 bitmask_snprintf(ata_c.flags, at_errbits, sbuf, sizeof(sbuf)); 1797 printf("%s: wd_flushcache: status=%s\n", wd->sc_dev.dv_xname, 1798 sbuf); 1799 return EIO; 1800 } 1801 return 0; 1802 } 1803 1804 void 1805 wd_shutdown(void *arg) 1806 { 1807 struct wd_softc *wd = arg; 1808 wd_flushcache(wd, AT_POLL); 1809 } 1810 1811 /* 1812 * Allocate space for a ioctl queue structure. Mostly taken from 1813 * scsipi_ioctl.c 1814 */ 1815 struct wd_ioctl * 1816 wi_get(void) 1817 { 1818 struct wd_ioctl *wi; 1819 int s; 1820 1821 wi = malloc(sizeof(struct wd_ioctl), M_TEMP, M_WAITOK|M_ZERO); 1822 simple_lock_init(&wi->wi_bp.b_interlock); 1823 s = splbio(); 1824 LIST_INSERT_HEAD(&wi_head, wi, wi_list); 1825 splx(s); 1826 return (wi); 1827 } 1828 1829 /* 1830 * Free an ioctl structure and remove it from our list 1831 */ 1832 1833 void 1834 wi_free(struct wd_ioctl *wi) 1835 { 1836 int s; 1837 1838 s = splbio(); 1839 LIST_REMOVE(wi, wi_list); 1840 splx(s); 1841 free(wi, M_TEMP); 1842 } 1843 1844 /* 1845 * Find a wd_ioctl structure based on the struct buf. 1846 */ 1847 1848 struct wd_ioctl * 1849 wi_find(struct buf *bp) 1850 { 1851 struct wd_ioctl *wi; 1852 int s; 1853 1854 s = splbio(); 1855 for (wi = wi_head.lh_first; wi != 0; wi = wi->wi_list.le_next) 1856 if (bp == &wi->wi_bp) 1857 break; 1858 splx(s); 1859 return (wi); 1860 } 1861 1862 /* 1863 * Ioctl pseudo strategy routine 1864 * 1865 * This is mostly stolen from scsipi_ioctl.c:scsistrategy(). What 1866 * happens here is: 1867 * 1868 * - wdioctl() queues a wd_ioctl structure. 1869 * 1870 * - wdioctl() calls physio/wdioctlstrategy based on whether or not 1871 * user space I/O is required. If physio() is called, physio() eventually 1872 * calls wdioctlstrategy(). 1873 * 1874 * - In either case, wdioctlstrategy() calls wd->atabus->ata_exec_command() 1875 * to perform the actual command 1876 * 1877 * The reason for the use of the pseudo strategy routine is because 1878 * when doing I/O to/from user space, physio _really_ wants to be in 1879 * the loop. We could put the entire buffer into the ioctl request 1880 * structure, but that won't scale if we want to do things like download 1881 * microcode. 1882 */ 1883 1884 void 1885 wdioctlstrategy(struct buf *bp) 1886 { 1887 struct wd_ioctl *wi; 1888 struct ata_command ata_c; 1889 int error = 0; 1890 1891 wi = wi_find(bp); 1892 if (wi == NULL) { 1893 printf("user_strat: No ioctl\n"); 1894 error = EINVAL; 1895 goto bad; 1896 } 1897 1898 memset(&ata_c, 0, sizeof(ata_c)); 1899 1900 /* 1901 * Abort if physio broke up the transfer 1902 */ 1903 1904 if (bp->b_bcount != wi->wi_atareq.datalen) { 1905 printf("physio split wd ioctl request... cannot proceed\n"); 1906 error = EIO; 1907 goto bad; 1908 } 1909 1910 /* 1911 * Abort if we didn't get a buffer size that was a multiple of 1912 * our sector size (or was larger than NBBY) 1913 */ 1914 1915 if ((bp->b_bcount % wi->wi_softc->sc_dk.dk_label->d_secsize) != 0 || 1916 (bp->b_bcount / wi->wi_softc->sc_dk.dk_label->d_secsize) >= 1917 (1 << NBBY)) { 1918 error = EINVAL; 1919 goto bad; 1920 } 1921 1922 /* 1923 * Make sure a timeout was supplied in the ioctl request 1924 */ 1925 1926 if (wi->wi_atareq.timeout == 0) { 1927 error = EINVAL; 1928 goto bad; 1929 } 1930 1931 if (wi->wi_atareq.flags & ATACMD_READ) 1932 ata_c.flags |= AT_READ; 1933 else if (wi->wi_atareq.flags & ATACMD_WRITE) 1934 ata_c.flags |= AT_WRITE; 1935 1936 if (wi->wi_atareq.flags & ATACMD_READREG) 1937 ata_c.flags |= AT_READREG; 1938 1939 ata_c.flags |= AT_WAIT; 1940 1941 ata_c.timeout = wi->wi_atareq.timeout; 1942 ata_c.r_command = wi->wi_atareq.command; 1943 ata_c.r_head = wi->wi_atareq.head & 0x0f; 1944 ata_c.r_cyl = wi->wi_atareq.cylinder; 1945 ata_c.r_sector = wi->wi_atareq.sec_num; 1946 ata_c.r_count = wi->wi_atareq.sec_count; 1947 ata_c.r_features = wi->wi_atareq.features; 1948 ata_c.r_st_bmask = WDCS_DRDY; 1949 ata_c.r_st_pmask = WDCS_DRDY; 1950 ata_c.data = wi->wi_bp.b_data; 1951 ata_c.bcount = wi->wi_bp.b_bcount; 1952 1953 if (wi->wi_softc->atabus->ata_exec_command(wi->wi_softc->drvp, &ata_c) 1954 != ATACMD_COMPLETE) { 1955 wi->wi_atareq.retsts = ATACMD_ERROR; 1956 goto bad; 1957 } 1958 1959 if (ata_c.flags & (AT_ERROR | AT_TIMEOU | AT_DF)) { 1960 if (ata_c.flags & AT_ERROR) { 1961 wi->wi_atareq.retsts = ATACMD_ERROR; 1962 wi->wi_atareq.error = ata_c.r_error; 1963 } else if (ata_c.flags & AT_DF) 1964 wi->wi_atareq.retsts = ATACMD_DF; 1965 else 1966 wi->wi_atareq.retsts = ATACMD_TIMEOUT; 1967 } else { 1968 wi->wi_atareq.retsts = ATACMD_OK; 1969 if (wi->wi_atareq.flags & ATACMD_READREG) { 1970 wi->wi_atareq.head = ata_c.r_head ; 1971 wi->wi_atareq.cylinder = ata_c.r_cyl; 1972 wi->wi_atareq.sec_num = ata_c.r_sector; 1973 wi->wi_atareq.sec_count = ata_c.r_count; 1974 wi->wi_atareq.features = ata_c.r_features; 1975 wi->wi_atareq.error = ata_c.r_error; 1976 } 1977 } 1978 1979 bp->b_error = 0; 1980 biodone(bp); 1981 return; 1982 bad: 1983 bp->b_flags |= B_ERROR; 1984 bp->b_error = error; 1985 biodone(bp); 1986 } 1987
Indexes created Fri Sep 26 08:10:20 GMT 2025