wd.c revision 1.285
1 /* $NetBSD: wd.c,v 1.285 2004/08/04 22:44:04 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 1.285 2004/08/04 22:44:04 bouyer Exp $"); 70 71 #ifndef WDCDEBUG 72 #define WDCDEBUG 73 #endif /* WDCDEBUG */ 74 75 #include "rnd.h" 76 77 #include <sys/param.h> 78 #include <sys/systm.h> 79 #include <sys/kernel.h> 80 #include <sys/conf.h> 81 #include <sys/file.h> 82 #include <sys/stat.h> 83 #include <sys/ioctl.h> 84 #include <sys/buf.h> 85 #include <sys/uio.h> 86 #include <sys/malloc.h> 87 #include <sys/device.h> 88 #include <sys/disklabel.h> 89 #include <sys/disk.h> 90 #include <sys/syslog.h> 91 #include <sys/proc.h> 92 #include <sys/vnode.h> 93 #if NRND > 0 94 #include <sys/rnd.h> 95 #endif 96 97 #include <machine/intr.h> 98 #include <machine/bus.h> 99 100 #include <dev/ata/atareg.h> 101 #include <dev/ata/atavar.h> 102 #include <dev/ata/wdvar.h> 103 #include <dev/ic/wdcreg.h> 104 #include <sys/ataio.h> 105 #include "locators.h" 106 107 #define LBA48_THRESHOLD (0xfffffff) /* 128GB / DEV_BSIZE */ 108 109 #define WDIORETRIES_SINGLE 4 /* number of retries before single-sector */ 110 #define WDIORETRIES 5 /* number of retries before giving up */ 111 #define RECOVERYTIME hz/2 /* time to wait before retrying a cmd */ 112 113 #define WDUNIT(dev) DISKUNIT(dev) 114 #define WDPART(dev) DISKPART(dev) 115 #define WDMINOR(unit, part) DISKMINOR(unit, part) 116 #define MAKEWDDEV(maj, unit, part) MAKEDISKDEV(maj, unit, part) 117 118 #define WDLABELDEV(dev) (MAKEWDDEV(major(dev), WDUNIT(dev), RAW_PART)) 119 120 #define DEBUG_INTR 0x01 121 #define DEBUG_XFERS 0x02 122 #define DEBUG_STATUS 0x04 123 #define DEBUG_FUNCS 0x08 124 #define DEBUG_PROBE 0x10 125 #ifdef WDCDEBUG 126 int wdcdebug_wd_mask = 0x0; 127 #define WDCDEBUG_PRINT(args, level) \ 128 if (wdcdebug_wd_mask & (level)) \ 129 printf args 130 #else 131 #define WDCDEBUG_PRINT(args, level) 132 #endif 133 134 int wdprobe(struct device *, struct cfdata *, void *); 135 void wdattach(struct device *, struct device *, void *); 136 int wddetach(struct device *, int); 137 int wdactivate(struct device *, enum devact); 138 int wdprint(void *, char *); 139 void wdperror(const struct wd_softc *); 140 141 CFATTACH_DECL(wd, sizeof(struct wd_softc), 142 wdprobe, wdattach, wddetach, wdactivate); 143 144 extern struct cfdriver wd_cd; 145 146 dev_type_open(wdopen); 147 dev_type_close(wdclose); 148 dev_type_read(wdread); 149 dev_type_write(wdwrite); 150 dev_type_ioctl(wdioctl); 151 dev_type_strategy(wdstrategy); 152 dev_type_dump(wddump); 153 dev_type_size(wdsize); 154 155 const struct bdevsw wd_bdevsw = { 156 wdopen, wdclose, wdstrategy, wdioctl, wddump, wdsize, D_DISK 157 }; 158 159 const struct cdevsw wd_cdevsw = { 160 wdopen, wdclose, wdread, wdwrite, wdioctl, 161 nostop, notty, nopoll, nommap, nokqfilter, D_DISK 162 }; 163 164 /* 165 * Glue necessary to hook WDCIOCCOMMAND into physio 166 */ 167 168 struct wd_ioctl { 169 LIST_ENTRY(wd_ioctl) wi_list; 170 struct buf wi_bp; 171 struct uio wi_uio; 172 struct iovec wi_iov; 173 atareq_t wi_atareq; 174 struct wd_softc *wi_softc; 175 }; 176 177 LIST_HEAD(, wd_ioctl) wi_head; 178 179 struct wd_ioctl *wi_find(struct buf *); 180 void wi_free(struct wd_ioctl *); 181 struct wd_ioctl *wi_get(void); 182 void wdioctlstrategy(struct buf *); 183 184 void wdgetdefaultlabel(struct wd_softc *, struct disklabel *); 185 void wdgetdisklabel(struct wd_softc *); 186 void wdstart(void *); 187 void __wdstart(struct wd_softc*, struct buf *); 188 void wdrestart(void *); 189 void wddone(void *); 190 int wd_get_params(struct wd_softc *, u_int8_t, struct ataparams *); 191 int wd_flushcache(struct wd_softc *, int); 192 void wd_shutdown(void *); 193 194 int wd_getcache(struct wd_softc *, int *); 195 int wd_setcache(struct wd_softc *, int); 196 197 struct dkdriver wddkdriver = { wdstrategy }; 198 199 #ifdef HAS_BAD144_HANDLING 200 static void bad144intern(struct wd_softc *); 201 #endif 202 203 #define WD_QUIRK_SPLIT_MOD15_WRITE 0x0001 /* must split certain writes */ 204 205 /* 206 * Quirk table for IDE drives. Put more-specific matches first, since 207 * a simple globbing routine is used for matching. 208 */ 209 static const struct wd_quirk { 210 const char *wdq_match; /* inquiry pattern to match */ 211 int wdq_quirks; /* drive quirks */ 212 } wd_quirk_table[] = { 213 /* 214 * Some Seagate S-ATA drives have a PHY which can get confused 215 * with the way data is packetized by some S-ATA controllers. 216 * 217 * The work-around is to split in two any write transfer whose 218 * sector count % 15 == 1 (assuming 512 byte sectors). 219 * 220 * XXX This is an incomplete list. There are at least a couple 221 * XXX more model numbers. If you have trouble with such transfers 222 * XXX (8K is the most common) on Seagate S-ATA drives, please 223 * XXX notify thorpej (at) NetBSD.org. 224 */ 225 { "ST3120023AS", 226 WD_QUIRK_SPLIT_MOD15_WRITE }, 227 { "ST380023AS", 228 WD_QUIRK_SPLIT_MOD15_WRITE }, 229 230 { NULL, 231 0 } 232 }; 233 234 static const struct wd_quirk * 235 wd_lookup_quirks(const char *name) 236 { 237 const struct wd_quirk *wdq; 238 const char *estr; 239 240 for (wdq = wd_quirk_table; wdq->wdq_match != NULL; wdq++) { 241 /* 242 * We only want exact matches (which include matches 243 * against globbing characters). 244 */ 245 if (pmatch(name, wdq->wdq_match, &estr) == 2) 246 return (wdq); 247 } 248 return (NULL); 249 } 250 251 int 252 wdprobe(struct device *parent, struct cfdata *match, void *aux) 253 { 254 struct ata_device *adev = aux; 255 256 if (adev == NULL) 257 return 0; 258 if (adev->adev_bustype->bustype_type != SCSIPI_BUSTYPE_ATA) 259 return 0; 260 261 if (match->cf_loc[ATA_HLCF_DRIVE] != ATA_HLCF_DRIVE_DEFAULT && 262 match->cf_loc[ATA_HLCF_DRIVE] != adev->adev_drv_data->drive) 263 return 0; 264 return 1; 265 } 266 267 void 268 wdattach(struct device *parent, struct device *self, void *aux) 269 { 270 struct wd_softc *wd = (void *)self; 271 struct ata_device *adev= aux; 272 int i, blank; 273 char buf[41], pbuf[9], c, *p, *q; 274 const struct wd_quirk *wdq; 275 WDCDEBUG_PRINT(("wdattach\n"), DEBUG_FUNCS | DEBUG_PROBE); 276 277 lockinit(&wd->sc_lock, PRIBIO | PCATCH, "wdlock", 0, 0); 278 279 callout_init(&wd->sc_restart_ch); 280 bufq_alloc(&wd->sc_q, BUFQ_DISK_DEFAULT_STRAT()|BUFQ_SORT_RAWBLOCK); 281 SLIST_INIT(&wd->sc_bslist); 282 283 wd->atabus = adev->adev_bustype; 284 wd->openings = adev->adev_openings; 285 wd->drvp = adev->adev_drv_data; 286 287 wd->drvp->drv_done = wddone; 288 wd->drvp->drv_softc = &wd->sc_dev; 289 290 aprint_naive("\n"); 291 292 /* read our drive info */ 293 if (wd_get_params(wd, AT_WAIT, &wd->sc_params) != 0) { 294 aprint_error("\n%s: IDENTIFY failed\n", wd->sc_dev.dv_xname); 295 return; 296 } 297 298 for (blank = 0, p = wd->sc_params.atap_model, q = buf, i = 0; 299 i < sizeof(wd->sc_params.atap_model); i++) { 300 c = *p++; 301 if (c == '\0') 302 break; 303 if (c != ' ') { 304 if (blank) { 305 *q++ = ' '; 306 blank = 0; 307 } 308 *q++ = c; 309 } else 310 blank = 1; 311 } 312 *q++ = '\0'; 313 314 aprint_normal(": <%s>\n", buf); 315 316 wdq = wd_lookup_quirks(buf); 317 if (wdq != NULL) 318 wd->sc_quirks = wdq->wdq_quirks; 319 320 if ((wd->sc_params.atap_multi & 0xff) > 1) { 321 wd->sc_multi = wd->sc_params.atap_multi & 0xff; 322 } else { 323 wd->sc_multi = 1; 324 } 325 326 aprint_normal("%s: drive supports %d-sector PIO transfers,", 327 wd->sc_dev.dv_xname, wd->sc_multi); 328 329 /* 48-bit LBA addressing */ 330 if ((wd->sc_params.atap_cmd2_en & ATA_CMD2_LBA48) != 0) 331 wd->sc_flags |= WDF_LBA48; 332 333 /* Prior to ATA-4, LBA was optional. */ 334 if ((wd->sc_params.atap_capabilities1 & WDC_CAP_LBA) != 0) 335 wd->sc_flags |= WDF_LBA; 336 #if 0 337 /* ATA-4 requires LBA. */ 338 if (wd->sc_params.atap_ataversion != 0xffff && 339 wd->sc_params.atap_ataversion >= WDC_VER_ATA4) 340 wd->sc_flags |= WDF_LBA; 341 #endif 342 343 if ((wd->sc_flags & WDF_LBA48) != 0) { 344 aprint_normal(" LBA48 addressing\n"); 345 wd->sc_capacity = 346 ((u_int64_t) wd->sc_params.__reserved6[11] << 48) | 347 ((u_int64_t) wd->sc_params.__reserved6[10] << 32) | 348 ((u_int64_t) wd->sc_params.__reserved6[9] << 16) | 349 ((u_int64_t) wd->sc_params.__reserved6[8] << 0); 350 } else if ((wd->sc_flags & WDF_LBA) != 0) { 351 aprint_normal(" LBA addressing\n"); 352 wd->sc_capacity = 353 (wd->sc_params.atap_capacity[1] << 16) | 354 wd->sc_params.atap_capacity[0]; 355 } else { 356 aprint_normal(" chs addressing\n"); 357 wd->sc_capacity = 358 wd->sc_params.atap_cylinders * 359 wd->sc_params.atap_heads * 360 wd->sc_params.atap_sectors; 361 } 362 format_bytes(pbuf, sizeof(pbuf), wd->sc_capacity * DEV_BSIZE); 363 aprint_normal("%s: %s, %d cyl, %d head, %d sec, " 364 "%d bytes/sect x %llu sectors\n", 365 self->dv_xname, pbuf, 366 (wd->sc_flags & WDF_LBA) ? (int)(wd->sc_capacity / 367 (wd->sc_params.atap_heads * wd->sc_params.atap_sectors)) : 368 wd->sc_params.atap_cylinders, 369 wd->sc_params.atap_heads, wd->sc_params.atap_sectors, 370 DEV_BSIZE, (unsigned long long)wd->sc_capacity); 371 372 WDCDEBUG_PRINT(("%s: atap_dmatiming_mimi=%d, atap_dmatiming_recom=%d\n", 373 self->dv_xname, wd->sc_params.atap_dmatiming_mimi, 374 wd->sc_params.atap_dmatiming_recom), DEBUG_PROBE); 375 /* 376 * Initialize and attach the disk structure. 377 */ 378 wd->sc_dk.dk_driver = &wddkdriver; 379 wd->sc_dk.dk_name = wd->sc_dev.dv_xname; 380 disk_attach(&wd->sc_dk); 381 wd->sc_wdc_bio.lp = wd->sc_dk.dk_label; 382 wd->sc_sdhook = shutdownhook_establish(wd_shutdown, wd); 383 if (wd->sc_sdhook == NULL) 384 aprint_error("%s: WARNING: unable to establish shutdown hook\n", 385 wd->sc_dev.dv_xname); 386 #if NRND > 0 387 rnd_attach_source(&wd->rnd_source, wd->sc_dev.dv_xname, 388 RND_TYPE_DISK, 0); 389 #endif 390 } 391 392 int 393 wdactivate(struct device *self, enum devact act) 394 { 395 int rv = 0; 396 397 switch (act) { 398 case DVACT_ACTIVATE: 399 rv = EOPNOTSUPP; 400 break; 401 402 case DVACT_DEACTIVATE: 403 /* 404 * Nothing to do; we key off the device's DVF_ACTIVATE. 405 */ 406 break; 407 } 408 return (rv); 409 } 410 411 int 412 wddetach(struct device *self, int flags) 413 { 414 struct wd_softc *sc = (struct wd_softc *)self; 415 struct buf *bp; 416 int s, bmaj, cmaj, i, mn; 417 418 /* locate the major number */ 419 bmaj = bdevsw_lookup_major(&wd_bdevsw); 420 cmaj = cdevsw_lookup_major(&wd_cdevsw); 421 422 s = splbio(); 423 424 /* Kill off any queued buffers. */ 425 while ((bp = BUFQ_GET(&sc->sc_q)) != NULL) { 426 bp->b_error = EIO; 427 bp->b_flags |= B_ERROR; 428 bp->b_resid = bp->b_bcount; 429 biodone(bp); 430 } 431 432 bufq_free(&sc->sc_q); 433 sc->atabus->ata_killpending(sc->drvp); 434 435 splx(s); 436 437 /* Nuke the vnodes for any open instances. */ 438 for (i = 0; i < MAXPARTITIONS; i++) { 439 mn = WDMINOR(self->dv_unit, i); 440 vdevgone(bmaj, mn, mn, VBLK); 441 vdevgone(cmaj, mn, mn, VCHR); 442 } 443 444 /* Detach disk. */ 445 disk_detach(&sc->sc_dk); 446 447 /* Clean out the bad sector list */ 448 while (!SLIST_EMPTY(&sc->sc_bslist)) { 449 void *head = SLIST_FIRST(&sc->sc_bslist); 450 SLIST_REMOVE_HEAD(&sc->sc_bslist, dbs_next); 451 free(head, M_TEMP); 452 } 453 sc->sc_bscount = 0; 454 455 /* Get rid of the shutdown hook. */ 456 if (sc->sc_sdhook != NULL) 457 shutdownhook_disestablish(sc->sc_sdhook); 458 459 #if NRND > 0 460 /* Unhook the entropy source. */ 461 rnd_detach_source(&sc->rnd_source); 462 #endif 463 464 lockmgr(&sc->sc_lock, LK_DRAIN, NULL); 465 sc->drvp->drive_flags = 0; /* no drive any more here */ 466 467 return (0); 468 } 469 470 /* 471 * Read/write routine for a buffer. Validates the arguments and schedules the 472 * transfer. Does not wait for the transfer to complete. 473 */ 474 void 475 wdstrategy(struct buf *bp) 476 { 477 struct wd_softc *wd = device_lookup(&wd_cd, WDUNIT(bp->b_dev)); 478 struct disklabel *lp = wd->sc_dk.dk_label; 479 daddr_t blkno; 480 int s; 481 482 WDCDEBUG_PRINT(("wdstrategy (%s)\n", wd->sc_dev.dv_xname), 483 DEBUG_XFERS); 484 485 /* Valid request? */ 486 if (bp->b_blkno < 0 || 487 (bp->b_bcount % lp->d_secsize) != 0 || 488 (bp->b_bcount / lp->d_secsize) >= (1 << NBBY)) { 489 bp->b_error = EINVAL; 490 goto bad; 491 } 492 493 /* If device invalidated (e.g. media change, door open), error. */ 494 if ((wd->sc_flags & WDF_LOADED) == 0) { 495 bp->b_error = EIO; 496 goto bad; 497 } 498 499 /* If it's a null transfer, return immediately. */ 500 if (bp->b_bcount == 0) 501 goto done; 502 503 /* 504 * Do bounds checking, adjust transfer. if error, process. 505 * If end of partition, just return. 506 */ 507 if (WDPART(bp->b_dev) == RAW_PART) { 508 if (bounds_check_with_mediasize(bp, DEV_BSIZE, 509 wd->sc_capacity) <= 0) 510 goto done; 511 } else { 512 if (bounds_check_with_label(&wd->sc_dk, bp, 513 (wd->sc_flags & (WDF_WLABEL|WDF_LABELLING)) != 0) <= 0) 514 goto done; 515 } 516 517 /* 518 * Now convert the block number to absolute and put it in 519 * terms of the device's logical block size. 520 */ 521 if (lp->d_secsize >= DEV_BSIZE) 522 blkno = bp->b_blkno / (lp->d_secsize / DEV_BSIZE); 523 else 524 blkno = bp->b_blkno * (DEV_BSIZE / lp->d_secsize); 525 526 if (WDPART(bp->b_dev) != RAW_PART) 527 blkno += lp->d_partitions[WDPART(bp->b_dev)].p_offset; 528 529 bp->b_rawblkno = blkno; 530 531 /* 532 * If the transfer about to be attempted contains only a block that 533 * is known to be bad then return an error for the transfer without 534 * even attempting to start a transfer up under the premis that we 535 * will just end up doing more retries for a transfer that will end 536 * up failing again. 537 * XXX:SMP - mutex required to protect with DIOCBSFLUSH 538 */ 539 if (__predict_false(!SLIST_EMPTY(&wd->sc_bslist))) { 540 struct disk_badsectors *dbs; 541 daddr_t maxblk = blkno + (bp->b_bcount >> DEV_BSHIFT) - 1; 542 543 SLIST_FOREACH(dbs, &wd->sc_bslist, dbs_next) 544 if ((dbs->dbs_min <= blkno && blkno <= dbs->dbs_max) || 545 (dbs->dbs_min <= maxblk && maxblk <= dbs->dbs_max)){ 546 bp->b_error = EIO; 547 goto bad; 548 } 549 } 550 551 /* Queue transfer on drive, activate drive and controller if idle. */ 552 s = splbio(); 553 BUFQ_PUT(&wd->sc_q, bp); 554 wdstart(wd); 555 splx(s); 556 return; 557 bad: 558 bp->b_flags |= B_ERROR; 559 done: 560 /* Toss transfer; we're done early. */ 561 bp->b_resid = bp->b_bcount; 562 biodone(bp); 563 } 564 565 /* 566 * Queue a drive for I/O. 567 */ 568 void 569 wdstart(void *arg) 570 { 571 struct wd_softc *wd = arg; 572 struct buf *bp = NULL; 573 574 WDCDEBUG_PRINT(("wdstart %s\n", wd->sc_dev.dv_xname), 575 DEBUG_XFERS); 576 while (wd->openings > 0) { 577 578 /* Is there a buf for us ? */ 579 if ((bp = BUFQ_GET(&wd->sc_q)) == NULL) 580 return; 581 582 /* 583 * Make the command. First lock the device 584 */ 585 wd->openings--; 586 587 wd->retries = 0; 588 __wdstart(wd, bp); 589 } 590 } 591 592 static void 593 wd_split_mod15_write(struct buf *bp) 594 { 595 struct buf *obp = bp->b_private; 596 struct wd_softc *sc = wd_cd.cd_devs[DISKUNIT(obp->b_dev)]; 597 598 if (__predict_false(bp->b_flags & B_ERROR) != 0) { 599 /* 600 * Propagate the error. If this was the first half of 601 * the original transfer, make sure to account for that 602 * in the residual. 603 */ 604 if (bp->b_data == obp->b_data) 605 bp->b_resid += bp->b_bcount; 606 goto done; 607 } 608 609 /* 610 * If this was the second half of the transfer, we're all done! 611 */ 612 if (bp->b_data != obp->b_data) 613 goto done; 614 615 /* 616 * Advance the pointer to the second half and issue that command 617 * using the same opening. 618 */ 619 bp->b_flags = obp->b_flags | B_CALL; 620 bp->b_data += bp->b_bcount; 621 bp->b_blkno += (bp->b_bcount / 512); 622 bp->b_rawblkno += (bp->b_bcount / 512); 623 __wdstart(sc, bp); 624 return; 625 626 done: 627 obp->b_flags |= (bp->b_flags & (B_EINTR|B_ERROR)); 628 obp->b_error = bp->b_error; 629 obp->b_resid = bp->b_resid; 630 pool_put(&bufpool, bp); 631 biodone(obp); 632 sc->openings++; 633 /* wddone() will call wdstart() */ 634 } 635 636 void 637 __wdstart(struct wd_softc *wd, struct buf *bp) 638 { 639 640 /* 641 * Deal with the "split mod15 write" quirk. We just divide the 642 * transfer in two, doing the first half and then then second half 643 * with the same command opening. 644 * 645 * Note we MUST do this here, because we can't let insertion 646 * into the bufq cause the transfers to be re-merged. 647 */ 648 if (__predict_false((wd->sc_quirks & WD_QUIRK_SPLIT_MOD15_WRITE) != 0 && 649 (bp->b_flags & B_READ) == 0 && 650 bp->b_bcount > 512 && 651 ((bp->b_bcount / 512) % 15) == 1)) { 652 struct buf *nbp; 653 654 /* already at splbio */ 655 nbp = pool_get(&bufpool, PR_NOWAIT); 656 if (__predict_false(nbp == NULL)) { 657 /* No memory -- fail the iop. */ 658 bp->b_error = ENOMEM; 659 bp->b_flags |= B_ERROR; 660 bp->b_resid = bp->b_bcount; 661 biodone(bp); 662 wd->openings++; 663 return; 664 } 665 666 BUF_INIT(nbp); 667 nbp->b_error = 0; 668 nbp->b_proc = bp->b_proc; 669 nbp->b_vp = NULLVP; 670 nbp->b_dev = bp->b_dev; 671 672 nbp->b_bcount = bp->b_bcount / 2; 673 nbp->b_bufsize = bp->b_bcount / 2; 674 nbp->b_data = bp->b_data; 675 676 nbp->b_blkno = bp->b_blkno; 677 nbp->b_rawblkno = bp->b_rawblkno; 678 679 nbp->b_flags = bp->b_flags | B_CALL; 680 nbp->b_iodone = wd_split_mod15_write; 681 682 /* Put ptr to orig buf in b_private and use new buf */ 683 nbp->b_private = bp; 684 685 BIO_COPYPRIO(nbp, bp); 686 687 bp = nbp; 688 } 689 690 wd->sc_wdc_bio.blkno = bp->b_rawblkno; 691 wd->sc_wdc_bio.blkdone =0; 692 wd->sc_bp = bp; 693 /* 694 * If we're retrying, retry in single-sector mode. This will give us 695 * the sector number of the problem, and will eventually allow the 696 * transfer to succeed. 697 */ 698 if (wd->retries >= WDIORETRIES_SINGLE) 699 wd->sc_wdc_bio.flags = ATA_SINGLE; 700 else 701 wd->sc_wdc_bio.flags = 0; 702 if (wd->sc_flags & WDF_LBA48 && wd->sc_wdc_bio.blkno > LBA48_THRESHOLD) 703 wd->sc_wdc_bio.flags |= ATA_LBA48; 704 if (wd->sc_flags & WDF_LBA) 705 wd->sc_wdc_bio.flags |= ATA_LBA; 706 if (bp->b_flags & B_READ) 707 wd->sc_wdc_bio.flags |= ATA_READ; 708 wd->sc_wdc_bio.bcount = bp->b_bcount; 709 wd->sc_wdc_bio.databuf = bp->b_data; 710 /* Instrumentation. */ 711 disk_busy(&wd->sc_dk); 712 switch (wd->atabus->ata_bio(wd->drvp, &wd->sc_wdc_bio)) { 713 case WDC_TRY_AGAIN: 714 callout_reset(&wd->sc_restart_ch, hz, wdrestart, wd); 715 break; 716 case WDC_QUEUED: 717 case WDC_COMPLETE: 718 break; 719 default: 720 panic("__wdstart: bad return code from ata_bio()"); 721 } 722 } 723 724 void 725 wddone(void *v) 726 { 727 struct wd_softc *wd = v; 728 struct buf *bp = wd->sc_bp; 729 const char *errmsg; 730 int do_perror = 0; 731 WDCDEBUG_PRINT(("wddone %s\n", wd->sc_dev.dv_xname), 732 DEBUG_XFERS); 733 734 if (bp == NULL) 735 return; 736 bp->b_resid = wd->sc_wdc_bio.bcount; 737 switch (wd->sc_wdc_bio.error) { 738 case ERR_DMA: 739 errmsg = "DMA error"; 740 goto retry; 741 case ERR_DF: 742 errmsg = "device fault"; 743 goto retry; 744 case TIMEOUT: 745 errmsg = "device timeout"; 746 goto retry; 747 case ERR_RESET: 748 errmsg = "channel reset"; 749 goto retry2; 750 case ERROR: 751 /* Don't care about media change bits */ 752 if (wd->sc_wdc_bio.r_error != 0 && 753 (wd->sc_wdc_bio.r_error & ~(WDCE_MC | WDCE_MCR)) == 0) 754 goto noerror; 755 errmsg = "error"; 756 do_perror = 1; 757 retry: /* Just reset and retry. Can we do more ? */ 758 wd->atabus->ata_reset_channel(wd->drvp, 0); 759 retry2: 760 diskerr(bp, "wd", errmsg, LOG_PRINTF, 761 wd->sc_wdc_bio.blkdone, wd->sc_dk.dk_label); 762 if (wd->retries < WDIORETRIES) 763 printf(", retrying\n"); 764 if (do_perror) 765 wdperror(wd); 766 if (wd->retries < WDIORETRIES) { 767 wd->retries++; 768 callout_reset(&wd->sc_restart_ch, RECOVERYTIME, 769 wdrestart, wd); 770 return; 771 } 772 printf("\n"); 773 774 /* 775 * Not all errors indicate a failed block but those that do, 776 * put the block on the bad-block list for the device. Only 777 * do this for reads because the drive should do it for writes, 778 * itself, according to Manuel. 779 */ 780 if ((bp->b_flags & B_READ) && 781 ((wd->drvp->ata_vers >= 4 && wd->sc_wdc_bio.r_error & 64) || 782 (wd->drvp->ata_vers < 4 && wd->sc_wdc_bio.r_error & 192))) { 783 struct disk_badsectors *dbs; 784 785 dbs = malloc(sizeof *dbs, M_TEMP, M_WAITOK); 786 dbs->dbs_min = bp->b_rawblkno; 787 dbs->dbs_max = dbs->dbs_min + (bp->b_bcount >> DEV_BSHIFT) - 1; 788 microtime(&dbs->dbs_failedat); 789 SLIST_INSERT_HEAD(&wd->sc_bslist, dbs, dbs_next); 790 wd->sc_bscount++; 791 } 792 793 bp->b_flags |= B_ERROR; 794 bp->b_error = EIO; 795 break; 796 case NOERROR: 797 noerror: if ((wd->sc_wdc_bio.flags & ATA_CORR) || wd->retries > 0) 798 printf("%s: soft error (corrected)\n", 799 wd->sc_dev.dv_xname); 800 break; 801 case ERR_NODEV: 802 bp->b_flags |= B_ERROR; 803 bp->b_error = EIO; 804 break; 805 } 806 disk_unbusy(&wd->sc_dk, (bp->b_bcount - bp->b_resid), 807 (bp->b_flags & B_READ)); 808 #if NRND > 0 809 rnd_add_uint32(&wd->rnd_source, bp->b_blkno); 810 #endif 811 /* XXX Yuck, but we don't want to increment openings in this case */ 812 if (__predict_false((bp->b_flags & B_CALL) != 0 && 813 bp->b_iodone == wd_split_mod15_write)) 814 biodone(bp); 815 else { 816 biodone(bp); 817 wd->openings++; 818 } 819 wdstart(wd); 820 } 821 822 void 823 wdrestart(void *v) 824 { 825 struct wd_softc *wd = v; 826 struct buf *bp = wd->sc_bp; 827 int s; 828 WDCDEBUG_PRINT(("wdrestart %s\n", wd->sc_dev.dv_xname), 829 DEBUG_XFERS); 830 831 s = splbio(); 832 __wdstart(v, bp); 833 splx(s); 834 } 835 836 int 837 wdread(dev_t dev, struct uio *uio, int flags) 838 { 839 840 WDCDEBUG_PRINT(("wdread\n"), DEBUG_XFERS); 841 return (physio(wdstrategy, NULL, dev, B_READ, minphys, uio)); 842 } 843 844 int 845 wdwrite(dev_t dev, struct uio *uio, int flags) 846 { 847 848 WDCDEBUG_PRINT(("wdwrite\n"), DEBUG_XFERS); 849 return (physio(wdstrategy, NULL, dev, B_WRITE, minphys, uio)); 850 } 851 852 int 853 wdopen(dev_t dev, int flag, int fmt, struct proc *p) 854 { 855 struct wd_softc *wd; 856 int part, error; 857 858 WDCDEBUG_PRINT(("wdopen\n"), DEBUG_FUNCS); 859 wd = device_lookup(&wd_cd, WDUNIT(dev)); 860 if (wd == NULL) 861 return (ENXIO); 862 863 if ((wd->sc_dev.dv_flags & DVF_ACTIVE) == 0) 864 return (ENODEV); 865 866 /* 867 * If this is the first open of this device, add a reference 868 * to the adapter. 869 */ 870 if (wd->sc_dk.dk_openmask == 0 && 871 (error = wd->atabus->ata_addref(wd->drvp)) != 0) 872 return (error); 873 874 if ((error = lockmgr(&wd->sc_lock, LK_EXCLUSIVE, NULL)) != 0) 875 goto bad4; 876 877 if (wd->sc_dk.dk_openmask != 0) { 878 /* 879 * If any partition is open, but the disk has been invalidated, 880 * disallow further opens. 881 */ 882 if ((wd->sc_flags & WDF_LOADED) == 0) { 883 error = EIO; 884 goto bad3; 885 } 886 } else { 887 if ((wd->sc_flags & WDF_LOADED) == 0) { 888 wd->sc_flags |= WDF_LOADED; 889 890 /* Load the physical device parameters. */ 891 wd_get_params(wd, AT_WAIT, &wd->sc_params); 892 893 /* Load the partition info if not already loaded. */ 894 wdgetdisklabel(wd); 895 } 896 } 897 898 part = WDPART(dev); 899 900 /* Check that the partition exists. */ 901 if (part != RAW_PART && 902 (part >= wd->sc_dk.dk_label->d_npartitions || 903 wd->sc_dk.dk_label->d_partitions[part].p_fstype == FS_UNUSED)) { 904 error = ENXIO; 905 goto bad; 906 } 907 908 /* Insure only one open at a time. */ 909 switch (fmt) { 910 case S_IFCHR: 911 wd->sc_dk.dk_copenmask |= (1 << part); 912 break; 913 case S_IFBLK: 914 wd->sc_dk.dk_bopenmask |= (1 << part); 915 break; 916 } 917 wd->sc_dk.dk_openmask = 918 wd->sc_dk.dk_copenmask | wd->sc_dk.dk_bopenmask; 919 920 lockmgr(&wd->sc_lock, LK_RELEASE, NULL); 921 return 0; 922 923 bad: 924 if (wd->sc_dk.dk_openmask == 0) { 925 } 926 927 bad3: 928 lockmgr(&wd->sc_lock, LK_RELEASE, NULL); 929 bad4: 930 if (wd->sc_dk.dk_openmask == 0) 931 wd->atabus->ata_delref(wd->drvp); 932 return error; 933 } 934 935 int 936 wdclose(dev_t dev, int flag, int fmt, struct proc *p) 937 { 938 struct wd_softc *wd = device_lookup(&wd_cd, WDUNIT(dev)); 939 int part = WDPART(dev); 940 int error; 941 942 WDCDEBUG_PRINT(("wdclose\n"), DEBUG_FUNCS); 943 if ((error = lockmgr(&wd->sc_lock, LK_EXCLUSIVE, NULL)) != 0) 944 return error; 945 946 switch (fmt) { 947 case S_IFCHR: 948 wd->sc_dk.dk_copenmask &= ~(1 << part); 949 break; 950 case S_IFBLK: 951 wd->sc_dk.dk_bopenmask &= ~(1 << part); 952 break; 953 } 954 wd->sc_dk.dk_openmask = 955 wd->sc_dk.dk_copenmask | wd->sc_dk.dk_bopenmask; 956 957 if (wd->sc_dk.dk_openmask == 0) { 958 wd_flushcache(wd, AT_WAIT); 959 /* XXXX Must wait for I/O to complete! */ 960 961 if (! (wd->sc_flags & WDF_KLABEL)) 962 wd->sc_flags &= ~WDF_LOADED; 963 964 wd->atabus->ata_delref(wd->drvp); 965 } 966 967 lockmgr(&wd->sc_lock, LK_RELEASE, NULL); 968 return 0; 969 } 970 971 void 972 wdgetdefaultlabel(struct wd_softc *wd, struct disklabel *lp) 973 { 974 975 WDCDEBUG_PRINT(("wdgetdefaultlabel\n"), DEBUG_FUNCS); 976 memset(lp, 0, sizeof(struct disklabel)); 977 978 lp->d_secsize = DEV_BSIZE; 979 lp->d_ntracks = wd->sc_params.atap_heads; 980 lp->d_nsectors = wd->sc_params.atap_sectors; 981 lp->d_ncylinders = (wd->sc_flags & WDF_LBA) ? wd->sc_capacity / 982 (wd->sc_params.atap_heads * wd->sc_params.atap_sectors) : 983 wd->sc_params.atap_cylinders; 984 lp->d_secpercyl = lp->d_ntracks * lp->d_nsectors; 985 986 if (strcmp(wd->sc_params.atap_model, "ST506") == 0) 987 lp->d_type = DTYPE_ST506; 988 else 989 lp->d_type = DTYPE_ESDI; 990 991 strncpy(lp->d_typename, wd->sc_params.atap_model, 16); 992 strncpy(lp->d_packname, "fictitious", 16); 993 if (wd->sc_capacity > UINT32_MAX) 994 lp->d_secperunit = UINT32_MAX; 995 else 996 lp->d_secperunit = wd->sc_capacity; 997 lp->d_rpm = 3600; 998 lp->d_interleave = 1; 999 lp->d_flags = 0; 1000 1001 lp->d_partitions[RAW_PART].p_offset = 0; 1002 lp->d_partitions[RAW_PART].p_size = 1003 lp->d_secperunit * (lp->d_secsize / DEV_BSIZE); 1004 lp->d_partitions[RAW_PART].p_fstype = FS_UNUSED; 1005 lp->d_npartitions = RAW_PART + 1; 1006 1007 lp->d_magic = DISKMAGIC; 1008 lp->d_magic2 = DISKMAGIC; 1009 lp->d_checksum = dkcksum(lp); 1010 } 1011 1012 /* 1013 * Fabricate a default disk label, and try to read the correct one. 1014 */ 1015 void 1016 wdgetdisklabel(struct wd_softc *wd) 1017 { 1018 struct disklabel *lp = wd->sc_dk.dk_label; 1019 const char *errstring; 1020 1021 WDCDEBUG_PRINT(("wdgetdisklabel\n"), DEBUG_FUNCS); 1022 1023 memset(wd->sc_dk.dk_cpulabel, 0, sizeof(struct cpu_disklabel)); 1024 1025 wdgetdefaultlabel(wd, lp); 1026 1027 wd->sc_badsect[0] = -1; 1028 1029 if (wd->drvp->state > RESET) 1030 wd->drvp->drive_flags |= DRIVE_RESET; 1031 errstring = readdisklabel(MAKEWDDEV(0, wd->sc_dev.dv_unit, RAW_PART), 1032 wdstrategy, lp, wd->sc_dk.dk_cpulabel); 1033 if (errstring) { 1034 /* 1035 * This probably happened because the drive's default 1036 * geometry doesn't match the DOS geometry. We 1037 * assume the DOS geometry is now in the label and try 1038 * again. XXX This is a kluge. 1039 */ 1040 if (wd->drvp->state > RESET) 1041 wd->drvp->drive_flags |= DRIVE_RESET; 1042 errstring = readdisklabel(MAKEWDDEV(0, wd->sc_dev.dv_unit, 1043 RAW_PART), wdstrategy, lp, wd->sc_dk.dk_cpulabel); 1044 } 1045 if (errstring) { 1046 printf("%s: %s\n", wd->sc_dev.dv_xname, errstring); 1047 return; 1048 } 1049 1050 if (wd->drvp->state > RESET) 1051 wd->drvp->drive_flags |= DRIVE_RESET; 1052 #ifdef HAS_BAD144_HANDLING 1053 if ((lp->d_flags & D_BADSECT) != 0) 1054 bad144intern(wd); 1055 #endif 1056 } 1057 1058 void 1059 wdperror(const struct wd_softc *wd) 1060 { 1061 static const char *const errstr0_3[] = {"address mark not found", 1062 "track 0 not found", "aborted command", "media change requested", 1063 "id not found", "media changed", "uncorrectable data error", 1064 "bad block detected"}; 1065 static const char *const errstr4_5[] = { 1066 "obsolete (address mark not found)", 1067 "no media/write protected", "aborted command", 1068 "media change requested", "id not found", "media changed", 1069 "uncorrectable data error", "interface CRC error"}; 1070 const char *const *errstr; 1071 int i; 1072 char *sep = ""; 1073 1074 const char *devname = wd->sc_dev.dv_xname; 1075 struct ata_drive_datas *drvp = wd->drvp; 1076 int errno = wd->sc_wdc_bio.r_error; 1077 1078 if (drvp->ata_vers >= 4) 1079 errstr = errstr4_5; 1080 else 1081 errstr = errstr0_3; 1082 1083 printf("%s: (", devname); 1084 1085 if (errno == 0) 1086 printf("error not notified"); 1087 1088 for (i = 0; i < 8; i++) { 1089 if (errno & (1 << i)) { 1090 printf("%s%s", sep, errstr[i]); 1091 sep = ", "; 1092 } 1093 } 1094 printf(")\n"); 1095 } 1096 1097 int 1098 wdioctl(dev_t dev, u_long xfer, caddr_t addr, int flag, struct proc *p) 1099 { 1100 struct wd_softc *wd = device_lookup(&wd_cd, WDUNIT(dev)); 1101 int error = 0; 1102 #ifdef __HAVE_OLD_DISKLABEL 1103 struct disklabel *newlabel = NULL; 1104 #endif 1105 1106 WDCDEBUG_PRINT(("wdioctl\n"), DEBUG_FUNCS); 1107 1108 if ((wd->sc_flags & WDF_LOADED) == 0) 1109 return EIO; 1110 1111 switch (xfer) { 1112 #ifdef HAS_BAD144_HANDLING 1113 case DIOCSBAD: 1114 if ((flag & FWRITE) == 0) 1115 return EBADF; 1116 wd->sc_dk.dk_cpulabel->bad = *(struct dkbad *)addr; 1117 wd->sc_dk.dk_label->d_flags |= D_BADSECT; 1118 bad144intern(wd); 1119 return 0; 1120 #endif 1121 1122 case DIOCBSLIST : 1123 { 1124 u_int32_t count, missing, skip; 1125 struct disk_badsecinfo dbsi; 1126 struct disk_badsectors *dbs; 1127 size_t available; 1128 caddr_t laddr; 1129 1130 dbsi = *(struct disk_badsecinfo *)addr; 1131 missing = wd->sc_bscount; 1132 count = 0; 1133 available = dbsi.dbsi_bufsize; 1134 skip = dbsi.dbsi_skip; 1135 laddr = dbsi.dbsi_buffer; 1136 1137 /* 1138 * We start this loop with the expectation that all of the 1139 * entries will be missed and decrement this counter each 1140 * time we either skip over one (already copied out) or 1141 * we actually copy it back to user space. The structs 1142 * holding the bad sector information are copied directly 1143 * back to user space whilst the summary is returned via 1144 * the struct passed in via the ioctl. 1145 */ 1146 SLIST_FOREACH(dbs, &wd->sc_bslist, dbs_next) { 1147 if (skip > 0) { 1148 missing--; 1149 skip--; 1150 continue; 1151 } 1152 if (available < sizeof(*dbs)) 1153 break; 1154 available -= sizeof(*dbs); 1155 copyout(dbs, laddr, sizeof(*dbs)); 1156 laddr += sizeof(*dbs); 1157 missing--; 1158 count++; 1159 } 1160 dbsi.dbsi_left = missing; 1161 dbsi.dbsi_copied = count; 1162 *(struct disk_badsecinfo *)addr = dbsi; 1163 return 0; 1164 } 1165 1166 case DIOCBSFLUSH : 1167 /* Clean out the bad sector list */ 1168 while (!SLIST_EMPTY(&wd->sc_bslist)) { 1169 void *head = SLIST_FIRST(&wd->sc_bslist); 1170 SLIST_REMOVE_HEAD(&wd->sc_bslist, dbs_next); 1171 free(head, M_TEMP); 1172 } 1173 wd->sc_bscount = 0; 1174 return 0; 1175 1176 case DIOCGDINFO: 1177 *(struct disklabel *)addr = *(wd->sc_dk.dk_label); 1178 return 0; 1179 #ifdef __HAVE_OLD_DISKLABEL 1180 case ODIOCGDINFO: 1181 newlabel = malloc(sizeof *newlabel, M_TEMP, M_WAITOK); 1182 if (newlabel == NULL) 1183 return EIO; 1184 *newlabel = *(wd->sc_dk.dk_label); 1185 if (newlabel->d_npartitions <= OLDMAXPARTITIONS) 1186 memcpy(addr, newlabel, sizeof (struct olddisklabel)); 1187 else 1188 error = ENOTTY; 1189 free(newlabel, M_TEMP); 1190 return error; 1191 #endif 1192 1193 case DIOCGPART: 1194 ((struct partinfo *)addr)->disklab = wd->sc_dk.dk_label; 1195 ((struct partinfo *)addr)->part = 1196 &wd->sc_dk.dk_label->d_partitions[WDPART(dev)]; 1197 return 0; 1198 1199 case DIOCWDINFO: 1200 case DIOCSDINFO: 1201 #ifdef __HAVE_OLD_DISKLABEL 1202 case ODIOCWDINFO: 1203 case ODIOCSDINFO: 1204 #endif 1205 { 1206 struct disklabel *lp; 1207 1208 if ((flag & FWRITE) == 0) 1209 return EBADF; 1210 1211 #ifdef __HAVE_OLD_DISKLABEL 1212 if (xfer == ODIOCSDINFO || xfer == ODIOCWDINFO) { 1213 newlabel = malloc(sizeof *newlabel, M_TEMP, M_WAITOK); 1214 if (newlabel == NULL) 1215 return EIO; 1216 memset(newlabel, 0, sizeof newlabel); 1217 memcpy(newlabel, addr, sizeof (struct olddisklabel)); 1218 lp = newlabel; 1219 } else 1220 #endif 1221 lp = (struct disklabel *)addr; 1222 1223 if ((error = lockmgr(&wd->sc_lock, LK_EXCLUSIVE, NULL)) != 0) 1224 goto bad; 1225 wd->sc_flags |= WDF_LABELLING; 1226 1227 error = setdisklabel(wd->sc_dk.dk_label, 1228 lp, /*wd->sc_dk.dk_openmask : */0, 1229 wd->sc_dk.dk_cpulabel); 1230 if (error == 0) { 1231 if (wd->drvp->state > RESET) 1232 wd->drvp->drive_flags |= DRIVE_RESET; 1233 if (xfer == DIOCWDINFO 1234 #ifdef __HAVE_OLD_DISKLABEL 1235 || xfer == ODIOCWDINFO 1236 #endif 1237 ) 1238 error = writedisklabel(WDLABELDEV(dev), 1239 wdstrategy, wd->sc_dk.dk_label, 1240 wd->sc_dk.dk_cpulabel); 1241 } 1242 1243 wd->sc_flags &= ~WDF_LABELLING; 1244 lockmgr(&wd->sc_lock, LK_RELEASE, NULL); 1245 bad: 1246 #ifdef __HAVE_OLD_DISKLABEL 1247 if (newlabel != NULL) 1248 free(newlabel, M_TEMP); 1249 #endif 1250 return error; 1251 } 1252 1253 case DIOCKLABEL: 1254 if (*(int *)addr) 1255 wd->sc_flags |= WDF_KLABEL; 1256 else 1257 wd->sc_flags &= ~WDF_KLABEL; 1258 return 0; 1259 1260 case DIOCWLABEL: 1261 if ((flag & FWRITE) == 0) 1262 return EBADF; 1263 if (*(int *)addr) 1264 wd->sc_flags |= WDF_WLABEL; 1265 else 1266 wd->sc_flags &= ~WDF_WLABEL; 1267 return 0; 1268 1269 case DIOCGDEFLABEL: 1270 wdgetdefaultlabel(wd, (struct disklabel *)addr); 1271 return 0; 1272 #ifdef __HAVE_OLD_DISKLABEL 1273 case ODIOCGDEFLABEL: 1274 newlabel = malloc(sizeof *newlabel, M_TEMP, M_WAITOK); 1275 if (newlabel == NULL) 1276 return EIO; 1277 wdgetdefaultlabel(wd, newlabel); 1278 if (newlabel->d_npartitions <= OLDMAXPARTITIONS) 1279 memcpy(addr, &newlabel, sizeof (struct olddisklabel)); 1280 else 1281 error = ENOTTY; 1282 free(newlabel, M_TEMP); 1283 return error; 1284 #endif 1285 1286 #ifdef notyet 1287 case DIOCWFORMAT: 1288 if ((flag & FWRITE) == 0) 1289 return EBADF; 1290 { 1291 register struct format_op *fop; 1292 struct iovec aiov; 1293 struct uio auio; 1294 1295 fop = (struct format_op *)addr; 1296 aiov.iov_base = fop->df_buf; 1297 aiov.iov_len = fop->df_count; 1298 auio.uio_iov = &aiov; 1299 auio.uio_iovcnt = 1; 1300 auio.uio_resid = fop->df_count; 1301 auio.uio_segflg = 0; 1302 auio.uio_offset = 1303 fop->df_startblk * wd->sc_dk.dk_label->d_secsize; 1304 auio.uio_procp = p; 1305 error = physio(wdformat, NULL, dev, B_WRITE, minphys, 1306 &auio); 1307 fop->df_count -= auio.uio_resid; 1308 fop->df_reg[0] = wdc->sc_status; 1309 fop->df_reg[1] = wdc->sc_error; 1310 return error; 1311 } 1312 #endif 1313 case DIOCGCACHE: 1314 return wd_getcache(wd, (int *)addr); 1315 1316 case DIOCSCACHE: 1317 return wd_setcache(wd, *(int *)addr); 1318 1319 case DIOCCACHESYNC: 1320 return wd_flushcache(wd, AT_WAIT); 1321 1322 case ATAIOCCOMMAND: 1323 /* 1324 * Make sure this command is (relatively) safe first 1325 */ 1326 if ((((atareq_t *) addr)->flags & ATACMD_READ) == 0 && 1327 (flag & FWRITE) == 0) 1328 return (EBADF); 1329 { 1330 struct wd_ioctl *wi; 1331 atareq_t *atareq = (atareq_t *) addr; 1332 int error; 1333 1334 wi = wi_get(); 1335 wi->wi_softc = wd; 1336 wi->wi_atareq = *atareq; 1337 1338 if (atareq->datalen && atareq->flags & 1339 (ATACMD_READ | ATACMD_WRITE)) { 1340 wi->wi_iov.iov_base = atareq->databuf; 1341 wi->wi_iov.iov_len = atareq->datalen; 1342 wi->wi_uio.uio_iov = &wi->wi_iov; 1343 wi->wi_uio.uio_iovcnt = 1; 1344 wi->wi_uio.uio_resid = atareq->datalen; 1345 wi->wi_uio.uio_offset = 0; 1346 wi->wi_uio.uio_segflg = UIO_USERSPACE; 1347 wi->wi_uio.uio_rw = 1348 (atareq->flags & ATACMD_READ) ? B_READ : B_WRITE; 1349 wi->wi_uio.uio_procp = p; 1350 error = physio(wdioctlstrategy, &wi->wi_bp, dev, 1351 (atareq->flags & ATACMD_READ) ? B_READ : B_WRITE, 1352 minphys, &wi->wi_uio); 1353 } else { 1354 /* No need to call physio if we don't have any 1355 user data */ 1356 wi->wi_bp.b_flags = 0; 1357 wi->wi_bp.b_data = 0; 1358 wi->wi_bp.b_bcount = 0; 1359 wi->wi_bp.b_dev = 0; 1360 wi->wi_bp.b_proc = p; 1361 wdioctlstrategy(&wi->wi_bp); 1362 error = wi->wi_bp.b_error; 1363 } 1364 *atareq = wi->wi_atareq; 1365 wi_free(wi); 1366 return(error); 1367 } 1368 1369 default: 1370 return ENOTTY; 1371 } 1372 1373 #ifdef DIAGNOSTIC 1374 panic("wdioctl: impossible"); 1375 #endif 1376 } 1377 1378 #ifdef B_FORMAT 1379 int 1380 wdformat(struct buf *bp) 1381 { 1382 1383 bp->b_flags |= B_FORMAT; 1384 return wdstrategy(bp); 1385 } 1386 #endif 1387 1388 int 1389 wdsize(dev_t dev) 1390 { 1391 struct wd_softc *wd; 1392 int part, omask; 1393 int size; 1394 1395 WDCDEBUG_PRINT(("wdsize\n"), DEBUG_FUNCS); 1396 1397 wd = device_lookup(&wd_cd, WDUNIT(dev)); 1398 if (wd == NULL) 1399 return (-1); 1400 1401 part = WDPART(dev); 1402 omask = wd->sc_dk.dk_openmask & (1 << part); 1403 1404 if (omask == 0 && wdopen(dev, 0, S_IFBLK, NULL) != 0) 1405 return (-1); 1406 if (wd->sc_dk.dk_label->d_partitions[part].p_fstype != FS_SWAP) 1407 size = -1; 1408 else 1409 size = wd->sc_dk.dk_label->d_partitions[part].p_size * 1410 (wd->sc_dk.dk_label->d_secsize / DEV_BSIZE); 1411 if (omask == 0 && wdclose(dev, 0, S_IFBLK, NULL) != 0) 1412 return (-1); 1413 return (size); 1414 } 1415 1416 /* #define WD_DUMP_NOT_TRUSTED if you just want to watch */ 1417 static int wddoingadump = 0; 1418 static int wddumprecalibrated = 0; 1419 static int wddumpmulti = 1; 1420 1421 /* 1422 * Dump core after a system crash. 1423 */ 1424 int 1425 wddump(dev_t dev, daddr_t blkno, caddr_t va, size_t size) 1426 { 1427 struct wd_softc *wd; /* disk unit to do the I/O */ 1428 struct disklabel *lp; /* disk's disklabel */ 1429 int part, err; 1430 int nblks; /* total number of sectors left to write */ 1431 1432 /* Check if recursive dump; if so, punt. */ 1433 if (wddoingadump) 1434 return EFAULT; 1435 wddoingadump = 1; 1436 1437 wd = device_lookup(&wd_cd, WDUNIT(dev)); 1438 if (wd == NULL) 1439 return (ENXIO); 1440 1441 part = WDPART(dev); 1442 1443 /* Convert to disk sectors. Request must be a multiple of size. */ 1444 lp = wd->sc_dk.dk_label; 1445 if ((size % lp->d_secsize) != 0) 1446 return EFAULT; 1447 nblks = size / lp->d_secsize; 1448 blkno = blkno / (lp->d_secsize / DEV_BSIZE); 1449 1450 /* Check transfer bounds against partition size. */ 1451 if ((blkno < 0) || ((blkno + nblks) > lp->d_partitions[part].p_size)) 1452 return EINVAL; 1453 1454 /* Offset block number to start of partition. */ 1455 blkno += lp->d_partitions[part].p_offset; 1456 1457 /* Recalibrate, if first dump transfer. */ 1458 if (wddumprecalibrated == 0) { 1459 wddumpmulti = wd->sc_multi; 1460 wddumprecalibrated = 1; 1461 wd->atabus->ata_reset_channel(wd->drvp, AT_POLL | AT_RST_EMERG); 1462 wd->drvp->state = RESET; 1463 } 1464 1465 while (nblks > 0) { 1466 wd->sc_bp = NULL; 1467 wd->sc_wdc_bio.blkno = blkno; 1468 wd->sc_wdc_bio.flags = ATA_POLL; 1469 if (wd->sc_flags & WDF_LBA48 && blkno > LBA48_THRESHOLD) 1470 wd->sc_wdc_bio.flags |= ATA_LBA48; 1471 if (wd->sc_flags & WDF_LBA) 1472 wd->sc_wdc_bio.flags |= ATA_LBA; 1473 wd->sc_wdc_bio.bcount = 1474 min(nblks, wddumpmulti) * lp->d_secsize; 1475 wd->sc_wdc_bio.databuf = va; 1476 #ifndef WD_DUMP_NOT_TRUSTED 1477 switch (wd->atabus->ata_bio(wd->drvp, &wd->sc_wdc_bio)) { 1478 case WDC_TRY_AGAIN: 1479 panic("wddump: try again"); 1480 break; 1481 case WDC_QUEUED: 1482 panic("wddump: polled command has been queued"); 1483 break; 1484 case WDC_COMPLETE: 1485 break; 1486 } 1487 switch(wd->sc_wdc_bio.error) { 1488 case TIMEOUT: 1489 printf("wddump: device timed out"); 1490 err = EIO; 1491 break; 1492 case ERR_DF: 1493 printf("wddump: drive fault"); 1494 err = EIO; 1495 break; 1496 case ERR_DMA: 1497 printf("wddump: DMA error"); 1498 err = EIO; 1499 break; 1500 case ERROR: 1501 printf("wddump: "); 1502 wdperror(wd); 1503 err = EIO; 1504 break; 1505 case NOERROR: 1506 err = 0; 1507 break; 1508 default: 1509 panic("wddump: unknown error type"); 1510 } 1511 if (err != 0) { 1512 printf("\n"); 1513 return err; 1514 } 1515 #else /* WD_DUMP_NOT_TRUSTED */ 1516 /* Let's just talk about this first... */ 1517 printf("wd%d: dump addr 0x%x, cylin %d, head %d, sector %d\n", 1518 unit, va, cylin, head, sector); 1519 delay(500 * 1000); /* half a second */ 1520 #endif 1521 1522 /* update block count */ 1523 nblks -= min(nblks, wddumpmulti); 1524 blkno += min(nblks, wddumpmulti); 1525 va += min(nblks, wddumpmulti) * lp->d_secsize; 1526 } 1527 1528 wddoingadump = 0; 1529 return 0; 1530 } 1531 1532 #ifdef HAS_BAD144_HANDLING 1533 /* 1534 * Internalize the bad sector table. 1535 */ 1536 void 1537 bad144intern(struct wd_softc *wd) 1538 { 1539 struct dkbad *bt = &wd->sc_dk.dk_cpulabel->bad; 1540 struct disklabel *lp = wd->sc_dk.dk_label; 1541 int i = 0; 1542 1543 WDCDEBUG_PRINT(("bad144intern\n"), DEBUG_XFERS); 1544 1545 for (; i < NBT_BAD; i++) { 1546 if (bt->bt_bad[i].bt_cyl == 0xffff) 1547 break; 1548 wd->sc_badsect[i] = 1549 bt->bt_bad[i].bt_cyl * lp->d_secpercyl + 1550 (bt->bt_bad[i].bt_trksec >> 8) * lp->d_nsectors + 1551 (bt->bt_bad[i].bt_trksec & 0xff); 1552 } 1553 for (; i < NBT_BAD+1; i++) 1554 wd->sc_badsect[i] = -1; 1555 } 1556 #endif 1557 1558 int 1559 wd_get_params(struct wd_softc *wd, u_int8_t flags, struct ataparams *params) 1560 { 1561 switch (wd->atabus->ata_get_params(wd->drvp, flags, params)) { 1562 case CMD_AGAIN: 1563 return 1; 1564 case CMD_ERR: 1565 /* 1566 * We `know' there's a drive here; just assume it's old. 1567 * This geometry is only used to read the MBR and print a 1568 * (false) attach message. 1569 */ 1570 strncpy(params->atap_model, "ST506", 1571 sizeof params->atap_model); 1572 params->atap_config = ATA_CFG_FIXED; 1573 params->atap_cylinders = 1024; 1574 params->atap_heads = 8; 1575 params->atap_sectors = 17; 1576 params->atap_multi = 1; 1577 params->atap_capabilities1 = params->atap_capabilities2 = 0; 1578 wd->drvp->ata_vers = -1; /* Mark it as pre-ATA */ 1579 return 0; 1580 case CMD_OK: 1581 return 0; 1582 default: 1583 panic("wd_get_params: bad return code from ata_get_params"); 1584 /* NOTREACHED */ 1585 } 1586 } 1587 1588 int 1589 wd_getcache(struct wd_softc *wd, int *bitsp) 1590 { 1591 struct ataparams params; 1592 1593 if (wd_get_params(wd, AT_WAIT, ¶ms) != 0) 1594 return EIO; 1595 if (params.atap_cmd_set1 == 0x0000 || 1596 params.atap_cmd_set1 == 0xffff || 1597 (params.atap_cmd_set1 & WDC_CMD1_CACHE) == 0) { 1598 *bitsp = 0; 1599 return 0; 1600 } 1601 *bitsp = DKCACHE_WCHANGE | DKCACHE_READ; 1602 if (params.atap_cmd1_en & WDC_CMD1_CACHE) 1603 *bitsp |= DKCACHE_WRITE; 1604 1605 return 0; 1606 } 1607 1608 int 1609 wd_setcache(struct wd_softc *wd, int bits) 1610 { 1611 struct ataparams params; 1612 struct wdc_command wdc_c; 1613 1614 if (wd_get_params(wd, AT_WAIT, ¶ms) != 0) 1615 return EIO; 1616 1617 if (params.atap_cmd_set1 == 0x0000 || 1618 params.atap_cmd_set1 == 0xffff || 1619 (params.atap_cmd_set1 & WDC_CMD1_CACHE) == 0) 1620 return EOPNOTSUPP; 1621 1622 if ((bits & DKCACHE_READ) == 0 || 1623 (bits & DKCACHE_SAVE) != 0) 1624 return EOPNOTSUPP; 1625 1626 memset(&wdc_c, 0, sizeof(struct wdc_command)); 1627 wdc_c.r_command = SET_FEATURES; 1628 wdc_c.r_st_bmask = 0; 1629 wdc_c.r_st_pmask = 0; 1630 wdc_c.timeout = 30000; /* 30s timeout */ 1631 wdc_c.flags = AT_WAIT; 1632 if (bits & DKCACHE_WRITE) 1633 wdc_c.r_features = WDSF_WRITE_CACHE_EN; 1634 else 1635 wdc_c.r_features = WDSF_WRITE_CACHE_DS; 1636 if (wd->atabus->ata_exec_command(wd->drvp, &wdc_c) != WDC_COMPLETE) { 1637 printf("%s: wd_setcache command not complete\n", 1638 wd->sc_dev.dv_xname); 1639 return EIO; 1640 } 1641 if (wdc_c.flags & (AT_ERROR | AT_TIMEOU | AT_DF)) { 1642 printf("%s: wd_setcache command error 0x%x\n", 1643 wd->sc_dev.dv_xname, wdc_c.flags); 1644 return EIO; 1645 } 1646 if (wdc_c.flags & ERR_NODEV) 1647 return ENODEV; 1648 return 0; 1649 } 1650 1651 int 1652 wd_flushcache(struct wd_softc *wd, int flags) 1653 { 1654 struct wdc_command wdc_c; 1655 1656 if (wd->drvp->ata_vers < 4) /* WDCC_FLUSHCACHE is here since ATA-4 */ 1657 return ENODEV; 1658 memset(&wdc_c, 0, sizeof(struct wdc_command)); 1659 if ((wd->sc_params.atap_cmd2_en & ATA_CMD2_LBA48) != 0 && 1660 (wd->sc_params.atap_cmd2_en & ATA_CMD2_FCE) != 0) 1661 wdc_c.r_command = WDCC_FLUSHCACHE_EXT; 1662 else 1663 wdc_c.r_command = WDCC_FLUSHCACHE; 1664 wdc_c.r_st_bmask = WDCS_DRDY; 1665 wdc_c.r_st_pmask = WDCS_DRDY; 1666 wdc_c.flags = flags; 1667 wdc_c.timeout = 30000; /* 30s timeout */ 1668 if (wd->atabus->ata_exec_command(wd->drvp, &wdc_c) != WDC_COMPLETE) { 1669 printf("%s: flush cache command didn't complete\n", 1670 wd->sc_dev.dv_xname); 1671 return EIO; 1672 } 1673 if (wdc_c.flags & ERR_NODEV) 1674 return ENODEV; 1675 if (wdc_c.flags & AT_TIMEOU) { 1676 printf("%s: flush cache command timeout\n", 1677 wd->sc_dev.dv_xname); 1678 return EIO; 1679 } 1680 if (wdc_c.flags & AT_ERROR) { 1681 if (wdc_c.r_error == WDCE_ABRT) /* command not supported */ 1682 return ENODEV; 1683 printf("%s: flush cache command: error 0x%x\n", 1684 wd->sc_dev.dv_xname, wdc_c.r_error); 1685 return EIO; 1686 } 1687 if (wdc_c.flags & AT_DF) { 1688 printf("%s: flush cache command: drive fault\n", 1689 wd->sc_dev.dv_xname); 1690 return EIO; 1691 } 1692 return 0; 1693 } 1694 1695 void 1696 wd_shutdown(void *arg) 1697 { 1698 struct wd_softc *wd = arg; 1699 wd_flushcache(wd, AT_POLL); 1700 } 1701 1702 /* 1703 * Allocate space for a ioctl queue structure. Mostly taken from 1704 * scsipi_ioctl.c 1705 */ 1706 struct wd_ioctl * 1707 wi_get(void) 1708 { 1709 struct wd_ioctl *wi; 1710 int s; 1711 1712 wi = malloc(sizeof(struct wd_ioctl), M_TEMP, M_WAITOK|M_ZERO); 1713 simple_lock_init(&wi->wi_bp.b_interlock); 1714 s = splbio(); 1715 LIST_INSERT_HEAD(&wi_head, wi, wi_list); 1716 splx(s); 1717 return (wi); 1718 } 1719 1720 /* 1721 * Free an ioctl structure and remove it from our list 1722 */ 1723 1724 void 1725 wi_free(struct wd_ioctl *wi) 1726 { 1727 int s; 1728 1729 s = splbio(); 1730 LIST_REMOVE(wi, wi_list); 1731 splx(s); 1732 free(wi, M_TEMP); 1733 } 1734 1735 /* 1736 * Find a wd_ioctl structure based on the struct buf. 1737 */ 1738 1739 struct wd_ioctl * 1740 wi_find(struct buf *bp) 1741 { 1742 struct wd_ioctl *wi; 1743 int s; 1744 1745 s = splbio(); 1746 for (wi = wi_head.lh_first; wi != 0; wi = wi->wi_list.le_next) 1747 if (bp == &wi->wi_bp) 1748 break; 1749 splx(s); 1750 return (wi); 1751 } 1752 1753 /* 1754 * Ioctl pseudo strategy routine 1755 * 1756 * This is mostly stolen from scsipi_ioctl.c:scsistrategy(). What 1757 * happens here is: 1758 * 1759 * - wdioctl() queues a wd_ioctl structure. 1760 * 1761 * - wdioctl() calls physio/wdioctlstrategy based on whether or not 1762 * user space I/O is required. If physio() is called, physio() eventually 1763 * calls wdioctlstrategy(). 1764 * 1765 * - In either case, wdioctlstrategy() calls wd->atabus->ata_exec_command() 1766 * to perform the actual command 1767 * 1768 * The reason for the use of the pseudo strategy routine is because 1769 * when doing I/O to/from user space, physio _really_ wants to be in 1770 * the loop. We could put the entire buffer into the ioctl request 1771 * structure, but that won't scale if we want to do things like download 1772 * microcode. 1773 */ 1774 1775 void 1776 wdioctlstrategy(struct buf *bp) 1777 { 1778 struct wd_ioctl *wi; 1779 struct wdc_command wdc_c; 1780 int error = 0; 1781 1782 wi = wi_find(bp); 1783 if (wi == NULL) { 1784 printf("user_strat: No ioctl\n"); 1785 error = EINVAL; 1786 goto bad; 1787 } 1788 1789 memset(&wdc_c, 0, sizeof(wdc_c)); 1790 1791 /* 1792 * Abort if physio broke up the transfer 1793 */ 1794 1795 if (bp->b_bcount != wi->wi_atareq.datalen) { 1796 printf("physio split wd ioctl request... cannot proceed\n"); 1797 error = EIO; 1798 goto bad; 1799 } 1800 1801 /* 1802 * Abort if we didn't get a buffer size that was a multiple of 1803 * our sector size (or was larger than NBBY) 1804 */ 1805 1806 if ((bp->b_bcount % wi->wi_softc->sc_dk.dk_label->d_secsize) != 0 || 1807 (bp->b_bcount / wi->wi_softc->sc_dk.dk_label->d_secsize) >= 1808 (1 << NBBY)) { 1809 error = EINVAL; 1810 goto bad; 1811 } 1812 1813 /* 1814 * Make sure a timeout was supplied in the ioctl request 1815 */ 1816 1817 if (wi->wi_atareq.timeout == 0) { 1818 error = EINVAL; 1819 goto bad; 1820 } 1821 1822 if (wi->wi_atareq.flags & ATACMD_READ) 1823 wdc_c.flags |= AT_READ; 1824 else if (wi->wi_atareq.flags & ATACMD_WRITE) 1825 wdc_c.flags |= AT_WRITE; 1826 1827 if (wi->wi_atareq.flags & ATACMD_READREG) 1828 wdc_c.flags |= AT_READREG; 1829 1830 wdc_c.flags |= AT_WAIT; 1831 1832 wdc_c.timeout = wi->wi_atareq.timeout; 1833 wdc_c.r_command = wi->wi_atareq.command; 1834 wdc_c.r_head = wi->wi_atareq.head & 0x0f; 1835 wdc_c.r_cyl = wi->wi_atareq.cylinder; 1836 wdc_c.r_sector = wi->wi_atareq.sec_num; 1837 wdc_c.r_count = wi->wi_atareq.sec_count; 1838 wdc_c.r_features = wi->wi_atareq.features; 1839 wdc_c.r_st_bmask = WDCS_DRDY; 1840 wdc_c.r_st_pmask = WDCS_DRDY; 1841 wdc_c.data = wi->wi_bp.b_data; 1842 wdc_c.bcount = wi->wi_bp.b_bcount; 1843 1844 if (wi->wi_softc->atabus->ata_exec_command(wi->wi_softc->drvp, &wdc_c) 1845 != WDC_COMPLETE) { 1846 wi->wi_atareq.retsts = ATACMD_ERROR; 1847 goto bad; 1848 } 1849 1850 if (wdc_c.flags & (AT_ERROR | AT_TIMEOU | AT_DF)) { 1851 if (wdc_c.flags & AT_ERROR) { 1852 wi->wi_atareq.retsts = ATACMD_ERROR; 1853 wi->wi_atareq.error = wdc_c.r_error; 1854 } else if (wdc_c.flags & AT_DF) 1855 wi->wi_atareq.retsts = ATACMD_DF; 1856 else 1857 wi->wi_atareq.retsts = ATACMD_TIMEOUT; 1858 } else { 1859 wi->wi_atareq.retsts = ATACMD_OK; 1860 if (wi->wi_atareq.flags & ATACMD_READREG) { 1861 wi->wi_atareq.head = wdc_c.r_head ; 1862 wi->wi_atareq.cylinder = wdc_c.r_cyl; 1863 wi->wi_atareq.sec_num = wdc_c.r_sector; 1864 wi->wi_atareq.sec_count = wdc_c.r_count; 1865 wi->wi_atareq.features = wdc_c.r_features; 1866 wi->wi_atareq.error = wdc_c.r_error; 1867 } 1868 } 1869 1870 bp->b_error = 0; 1871 biodone(bp); 1872 return; 1873 bad: 1874 bp->b_flags |= B_ERROR; 1875 bp->b_error = error; 1876 biodone(bp); 1877 } 1878
Indexes created Mon Sep 29 18:09:42 GMT 2025