wd.c revision 1.284
1 /* $NetBSD: wd.c,v 1.284 2004/08/03 22:37:19 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 1.284 2004/08/03 22:37:19 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); 433 434 splx(s); 435 436 /* Nuke the vnodes for any open instances. */ 437 for (i = 0; i < MAXPARTITIONS; i++) { 438 mn = WDMINOR(self->dv_unit, i); 439 vdevgone(bmaj, mn, mn, VBLK); 440 vdevgone(cmaj, mn, mn, VCHR); 441 } 442 443 /* Detach disk. */ 444 disk_detach(&sc->sc_dk); 445 446 /* Clean out the bad sector list */ 447 while (!SLIST_EMPTY(&sc->sc_bslist)) { 448 void *head = SLIST_FIRST(&sc->sc_bslist); 449 SLIST_REMOVE_HEAD(&sc->sc_bslist, dbs_next); 450 free(head, M_TEMP); 451 } 452 sc->sc_bscount = 0; 453 454 /* Get rid of the shutdown hook. */ 455 if (sc->sc_sdhook != NULL) 456 shutdownhook_disestablish(sc->sc_sdhook); 457 458 #if NRND > 0 459 /* Unhook the entropy source. */ 460 rnd_detach_source(&sc->rnd_source); 461 #endif 462 463 lockmgr(&sc->sc_lock, LK_DRAIN, NULL); 464 sc->drvp->drive_flags = 0; /* no drive any more here */ 465 466 return (0); 467 } 468 469 /* 470 * Read/write routine for a buffer. Validates the arguments and schedules the 471 * transfer. Does not wait for the transfer to complete. 472 */ 473 void 474 wdstrategy(struct buf *bp) 475 { 476 struct wd_softc *wd = device_lookup(&wd_cd, WDUNIT(bp->b_dev)); 477 struct disklabel *lp = wd->sc_dk.dk_label; 478 daddr_t blkno; 479 int s; 480 481 WDCDEBUG_PRINT(("wdstrategy (%s)\n", wd->sc_dev.dv_xname), 482 DEBUG_XFERS); 483 484 /* Valid request? */ 485 if (bp->b_blkno < 0 || 486 (bp->b_bcount % lp->d_secsize) != 0 || 487 (bp->b_bcount / lp->d_secsize) >= (1 << NBBY)) { 488 bp->b_error = EINVAL; 489 goto bad; 490 } 491 492 /* If device invalidated (e.g. media change, door open), error. */ 493 if ((wd->sc_flags & WDF_LOADED) == 0) { 494 bp->b_error = EIO; 495 goto bad; 496 } 497 498 /* If it's a null transfer, return immediately. */ 499 if (bp->b_bcount == 0) 500 goto done; 501 502 /* 503 * Do bounds checking, adjust transfer. if error, process. 504 * If end of partition, just return. 505 */ 506 if (WDPART(bp->b_dev) == RAW_PART) { 507 if (bounds_check_with_mediasize(bp, DEV_BSIZE, 508 wd->sc_capacity) <= 0) 509 goto done; 510 } else { 511 if (bounds_check_with_label(&wd->sc_dk, bp, 512 (wd->sc_flags & (WDF_WLABEL|WDF_LABELLING)) != 0) <= 0) 513 goto done; 514 } 515 516 /* 517 * Now convert the block number to absolute and put it in 518 * terms of the device's logical block size. 519 */ 520 if (lp->d_secsize >= DEV_BSIZE) 521 blkno = bp->b_blkno / (lp->d_secsize / DEV_BSIZE); 522 else 523 blkno = bp->b_blkno * (DEV_BSIZE / lp->d_secsize); 524 525 if (WDPART(bp->b_dev) != RAW_PART) 526 blkno += lp->d_partitions[WDPART(bp->b_dev)].p_offset; 527 528 bp->b_rawblkno = blkno; 529 530 /* 531 * If the transfer about to be attempted contains only a block that 532 * is known to be bad then return an error for the transfer without 533 * even attempting to start a transfer up under the premis that we 534 * will just end up doing more retries for a transfer that will end 535 * up failing again. 536 * XXX:SMP - mutex required to protect with DIOCBSFLUSH 537 */ 538 if (__predict_false(!SLIST_EMPTY(&wd->sc_bslist))) { 539 struct disk_badsectors *dbs; 540 daddr_t maxblk = blkno + (bp->b_bcount >> DEV_BSHIFT) - 1; 541 542 SLIST_FOREACH(dbs, &wd->sc_bslist, dbs_next) 543 if ((dbs->dbs_min <= blkno && blkno <= dbs->dbs_max) || 544 (dbs->dbs_min <= maxblk && maxblk <= dbs->dbs_max)){ 545 bp->b_error = EIO; 546 goto bad; 547 } 548 } 549 550 /* Queue transfer on drive, activate drive and controller if idle. */ 551 s = splbio(); 552 BUFQ_PUT(&wd->sc_q, bp); 553 wdstart(wd); 554 splx(s); 555 return; 556 bad: 557 bp->b_flags |= B_ERROR; 558 done: 559 /* Toss transfer; we're done early. */ 560 bp->b_resid = bp->b_bcount; 561 biodone(bp); 562 } 563 564 /* 565 * Queue a drive for I/O. 566 */ 567 void 568 wdstart(void *arg) 569 { 570 struct wd_softc *wd = arg; 571 struct buf *bp = NULL; 572 573 WDCDEBUG_PRINT(("wdstart %s\n", wd->sc_dev.dv_xname), 574 DEBUG_XFERS); 575 while (wd->openings > 0) { 576 577 /* Is there a buf for us ? */ 578 if ((bp = BUFQ_GET(&wd->sc_q)) == NULL) 579 return; 580 581 /* 582 * Make the command. First lock the device 583 */ 584 wd->openings--; 585 586 wd->retries = 0; 587 __wdstart(wd, bp); 588 } 589 } 590 591 static void 592 wd_split_mod15_write(struct buf *bp) 593 { 594 struct buf *obp = bp->b_private; 595 struct wd_softc *sc = wd_cd.cd_devs[DISKUNIT(obp->b_dev)]; 596 597 if (__predict_false(bp->b_flags & B_ERROR) != 0) { 598 /* 599 * Propagate the error. If this was the first half of 600 * the original transfer, make sure to account for that 601 * in the residual. 602 */ 603 if (bp->b_data == obp->b_data) 604 bp->b_resid += bp->b_bcount; 605 goto done; 606 } 607 608 /* 609 * If this was the second half of the transfer, we're all done! 610 */ 611 if (bp->b_data != obp->b_data) 612 goto done; 613 614 /* 615 * Advance the pointer to the second half and issue that command 616 * using the same opening. 617 */ 618 bp->b_flags = obp->b_flags | B_CALL; 619 bp->b_data += bp->b_bcount; 620 bp->b_blkno += (bp->b_bcount / 512); 621 bp->b_rawblkno += (bp->b_bcount / 512); 622 __wdstart(sc, bp); 623 return; 624 625 done: 626 obp->b_flags |= (bp->b_flags & (B_EINTR|B_ERROR)); 627 obp->b_error = bp->b_error; 628 obp->b_resid = bp->b_resid; 629 pool_put(&bufpool, bp); 630 biodone(obp); 631 sc->openings++; 632 /* wddone() will call wdstart() */ 633 } 634 635 void 636 __wdstart(struct wd_softc *wd, struct buf *bp) 637 { 638 639 /* 640 * Deal with the "split mod15 write" quirk. We just divide the 641 * transfer in two, doing the first half and then then second half 642 * with the same command opening. 643 * 644 * Note we MUST do this here, because we can't let insertion 645 * into the bufq cause the transfers to be re-merged. 646 */ 647 if (__predict_false((wd->sc_quirks & WD_QUIRK_SPLIT_MOD15_WRITE) != 0 && 648 (bp->b_flags & B_READ) == 0 && 649 bp->b_bcount > 512 && 650 ((bp->b_bcount / 512) % 15) == 1)) { 651 struct buf *nbp; 652 653 /* already at splbio */ 654 nbp = pool_get(&bufpool, PR_NOWAIT); 655 if (__predict_false(nbp == NULL)) { 656 /* No memory -- fail the iop. */ 657 bp->b_error = ENOMEM; 658 bp->b_flags |= B_ERROR; 659 bp->b_resid = bp->b_bcount; 660 biodone(bp); 661 wd->openings++; 662 return; 663 } 664 665 BUF_INIT(nbp); 666 nbp->b_error = 0; 667 nbp->b_proc = bp->b_proc; 668 nbp->b_vp = NULLVP; 669 nbp->b_dev = bp->b_dev; 670 671 nbp->b_bcount = bp->b_bcount / 2; 672 nbp->b_bufsize = bp->b_bcount / 2; 673 nbp->b_data = bp->b_data; 674 675 nbp->b_blkno = bp->b_blkno; 676 nbp->b_rawblkno = bp->b_rawblkno; 677 678 nbp->b_flags = bp->b_flags | B_CALL; 679 nbp->b_iodone = wd_split_mod15_write; 680 681 /* Put ptr to orig buf in b_private and use new buf */ 682 nbp->b_private = bp; 683 684 BIO_COPYPRIO(nbp, bp); 685 686 bp = nbp; 687 } 688 689 wd->sc_wdc_bio.blkno = bp->b_rawblkno; 690 wd->sc_wdc_bio.blkdone =0; 691 wd->sc_bp = bp; 692 /* 693 * If we're retrying, retry in single-sector mode. This will give us 694 * the sector number of the problem, and will eventually allow the 695 * transfer to succeed. 696 */ 697 if (wd->retries >= WDIORETRIES_SINGLE) 698 wd->sc_wdc_bio.flags = ATA_SINGLE; 699 else 700 wd->sc_wdc_bio.flags = 0; 701 if (wd->sc_flags & WDF_LBA48 && wd->sc_wdc_bio.blkno > LBA48_THRESHOLD) 702 wd->sc_wdc_bio.flags |= ATA_LBA48; 703 if (wd->sc_flags & WDF_LBA) 704 wd->sc_wdc_bio.flags |= ATA_LBA; 705 if (bp->b_flags & B_READ) 706 wd->sc_wdc_bio.flags |= ATA_READ; 707 wd->sc_wdc_bio.bcount = bp->b_bcount; 708 wd->sc_wdc_bio.databuf = bp->b_data; 709 /* Instrumentation. */ 710 disk_busy(&wd->sc_dk); 711 switch (wd->atabus->ata_bio(wd->drvp, &wd->sc_wdc_bio)) { 712 case WDC_TRY_AGAIN: 713 callout_reset(&wd->sc_restart_ch, hz, wdrestart, wd); 714 break; 715 case WDC_QUEUED: 716 case WDC_COMPLETE: 717 break; 718 default: 719 panic("__wdstart: bad return code from ata_bio()"); 720 } 721 } 722 723 void 724 wddone(void *v) 725 { 726 struct wd_softc *wd = v; 727 struct buf *bp = wd->sc_bp; 728 const char *errmsg; 729 int do_perror = 0; 730 WDCDEBUG_PRINT(("wddone %s\n", wd->sc_dev.dv_xname), 731 DEBUG_XFERS); 732 733 if (bp == NULL) 734 return; 735 bp->b_resid = wd->sc_wdc_bio.bcount; 736 switch (wd->sc_wdc_bio.error) { 737 case ERR_DMA: 738 errmsg = "DMA error"; 739 goto retry; 740 case ERR_DF: 741 errmsg = "device fault"; 742 goto retry; 743 case TIMEOUT: 744 errmsg = "device timeout"; 745 goto retry; 746 case ERR_RESET: 747 errmsg = "channel reset"; 748 goto retry2; 749 case ERROR: 750 /* Don't care about media change bits */ 751 if (wd->sc_wdc_bio.r_error != 0 && 752 (wd->sc_wdc_bio.r_error & ~(WDCE_MC | WDCE_MCR)) == 0) 753 goto noerror; 754 errmsg = "error"; 755 do_perror = 1; 756 retry: /* Just reset and retry. Can we do more ? */ 757 wd->atabus->ata_reset_channel(wd->drvp, 0); 758 retry2: 759 diskerr(bp, "wd", errmsg, LOG_PRINTF, 760 wd->sc_wdc_bio.blkdone, wd->sc_dk.dk_label); 761 if (wd->retries < WDIORETRIES) 762 printf(", retrying\n"); 763 if (do_perror) 764 wdperror(wd); 765 if (wd->retries < WDIORETRIES) { 766 wd->retries++; 767 callout_reset(&wd->sc_restart_ch, RECOVERYTIME, 768 wdrestart, wd); 769 return; 770 } 771 printf("\n"); 772 773 /* 774 * Not all errors indicate a failed block but those that do, 775 * put the block on the bad-block list for the device. Only 776 * do this for reads because the drive should do it for writes, 777 * itself, according to Manuel. 778 */ 779 if ((bp->b_flags & B_READ) && 780 ((wd->drvp->ata_vers >= 4 && wd->sc_wdc_bio.r_error & 64) || 781 (wd->drvp->ata_vers < 4 && wd->sc_wdc_bio.r_error & 192))) { 782 struct disk_badsectors *dbs; 783 784 dbs = malloc(sizeof *dbs, M_TEMP, M_WAITOK); 785 dbs->dbs_min = bp->b_rawblkno; 786 dbs->dbs_max = dbs->dbs_min + (bp->b_bcount >> DEV_BSHIFT) - 1; 787 microtime(&dbs->dbs_failedat); 788 SLIST_INSERT_HEAD(&wd->sc_bslist, dbs, dbs_next); 789 wd->sc_bscount++; 790 } 791 792 bp->b_flags |= B_ERROR; 793 bp->b_error = EIO; 794 break; 795 case NOERROR: 796 noerror: if ((wd->sc_wdc_bio.flags & ATA_CORR) || wd->retries > 0) 797 printf("%s: soft error (corrected)\n", 798 wd->sc_dev.dv_xname); 799 break; 800 case ERR_NODEV: 801 bp->b_flags |= B_ERROR; 802 bp->b_error = EIO; 803 break; 804 } 805 disk_unbusy(&wd->sc_dk, (bp->b_bcount - bp->b_resid), 806 (bp->b_flags & B_READ)); 807 #if NRND > 0 808 rnd_add_uint32(&wd->rnd_source, bp->b_blkno); 809 #endif 810 /* XXX Yuck, but we don't want to increment openings in this case */ 811 if (__predict_false((bp->b_flags & B_CALL) != 0 && 812 bp->b_iodone == wd_split_mod15_write)) 813 biodone(bp); 814 else { 815 biodone(bp); 816 wd->openings++; 817 } 818 wdstart(wd); 819 } 820 821 void 822 wdrestart(void *v) 823 { 824 struct wd_softc *wd = v; 825 struct buf *bp = wd->sc_bp; 826 int s; 827 WDCDEBUG_PRINT(("wdrestart %s\n", wd->sc_dev.dv_xname), 828 DEBUG_XFERS); 829 830 s = splbio(); 831 __wdstart(v, bp); 832 splx(s); 833 } 834 835 int 836 wdread(dev_t dev, struct uio *uio, int flags) 837 { 838 839 WDCDEBUG_PRINT(("wdread\n"), DEBUG_XFERS); 840 return (physio(wdstrategy, NULL, dev, B_READ, minphys, uio)); 841 } 842 843 int 844 wdwrite(dev_t dev, struct uio *uio, int flags) 845 { 846 847 WDCDEBUG_PRINT(("wdwrite\n"), DEBUG_XFERS); 848 return (physio(wdstrategy, NULL, dev, B_WRITE, minphys, uio)); 849 } 850 851 int 852 wdopen(dev_t dev, int flag, int fmt, struct proc *p) 853 { 854 struct wd_softc *wd; 855 int part, error; 856 857 WDCDEBUG_PRINT(("wdopen\n"), DEBUG_FUNCS); 858 wd = device_lookup(&wd_cd, WDUNIT(dev)); 859 if (wd == NULL) 860 return (ENXIO); 861 862 if ((wd->sc_dev.dv_flags & DVF_ACTIVE) == 0) 863 return (ENODEV); 864 865 /* 866 * If this is the first open of this device, add a reference 867 * to the adapter. 868 */ 869 if (wd->sc_dk.dk_openmask == 0 && 870 (error = wd->atabus->ata_addref(wd->drvp)) != 0) 871 return (error); 872 873 if ((error = lockmgr(&wd->sc_lock, LK_EXCLUSIVE, NULL)) != 0) 874 goto bad4; 875 876 if (wd->sc_dk.dk_openmask != 0) { 877 /* 878 * If any partition is open, but the disk has been invalidated, 879 * disallow further opens. 880 */ 881 if ((wd->sc_flags & WDF_LOADED) == 0) { 882 error = EIO; 883 goto bad3; 884 } 885 } else { 886 if ((wd->sc_flags & WDF_LOADED) == 0) { 887 wd->sc_flags |= WDF_LOADED; 888 889 /* Load the physical device parameters. */ 890 wd_get_params(wd, AT_WAIT, &wd->sc_params); 891 892 /* Load the partition info if not already loaded. */ 893 wdgetdisklabel(wd); 894 } 895 } 896 897 part = WDPART(dev); 898 899 /* Check that the partition exists. */ 900 if (part != RAW_PART && 901 (part >= wd->sc_dk.dk_label->d_npartitions || 902 wd->sc_dk.dk_label->d_partitions[part].p_fstype == FS_UNUSED)) { 903 error = ENXIO; 904 goto bad; 905 } 906 907 /* Insure only one open at a time. */ 908 switch (fmt) { 909 case S_IFCHR: 910 wd->sc_dk.dk_copenmask |= (1 << part); 911 break; 912 case S_IFBLK: 913 wd->sc_dk.dk_bopenmask |= (1 << part); 914 break; 915 } 916 wd->sc_dk.dk_openmask = 917 wd->sc_dk.dk_copenmask | wd->sc_dk.dk_bopenmask; 918 919 lockmgr(&wd->sc_lock, LK_RELEASE, NULL); 920 return 0; 921 922 bad: 923 if (wd->sc_dk.dk_openmask == 0) { 924 } 925 926 bad3: 927 lockmgr(&wd->sc_lock, LK_RELEASE, NULL); 928 bad4: 929 if (wd->sc_dk.dk_openmask == 0) 930 wd->atabus->ata_delref(wd->drvp); 931 return error; 932 } 933 934 int 935 wdclose(dev_t dev, int flag, int fmt, struct proc *p) 936 { 937 struct wd_softc *wd = device_lookup(&wd_cd, WDUNIT(dev)); 938 int part = WDPART(dev); 939 int error; 940 941 WDCDEBUG_PRINT(("wdclose\n"), DEBUG_FUNCS); 942 if ((error = lockmgr(&wd->sc_lock, LK_EXCLUSIVE, NULL)) != 0) 943 return error; 944 945 switch (fmt) { 946 case S_IFCHR: 947 wd->sc_dk.dk_copenmask &= ~(1 << part); 948 break; 949 case S_IFBLK: 950 wd->sc_dk.dk_bopenmask &= ~(1 << part); 951 break; 952 } 953 wd->sc_dk.dk_openmask = 954 wd->sc_dk.dk_copenmask | wd->sc_dk.dk_bopenmask; 955 956 if (wd->sc_dk.dk_openmask == 0) { 957 wd_flushcache(wd, AT_WAIT); 958 /* XXXX Must wait for I/O to complete! */ 959 960 if (! (wd->sc_flags & WDF_KLABEL)) 961 wd->sc_flags &= ~WDF_LOADED; 962 963 wd->atabus->ata_delref(wd->drvp); 964 } 965 966 lockmgr(&wd->sc_lock, LK_RELEASE, NULL); 967 return 0; 968 } 969 970 void 971 wdgetdefaultlabel(struct wd_softc *wd, struct disklabel *lp) 972 { 973 974 WDCDEBUG_PRINT(("wdgetdefaultlabel\n"), DEBUG_FUNCS); 975 memset(lp, 0, sizeof(struct disklabel)); 976 977 lp->d_secsize = DEV_BSIZE; 978 lp->d_ntracks = wd->sc_params.atap_heads; 979 lp->d_nsectors = wd->sc_params.atap_sectors; 980 lp->d_ncylinders = (wd->sc_flags & WDF_LBA) ? wd->sc_capacity / 981 (wd->sc_params.atap_heads * wd->sc_params.atap_sectors) : 982 wd->sc_params.atap_cylinders; 983 lp->d_secpercyl = lp->d_ntracks * lp->d_nsectors; 984 985 if (strcmp(wd->sc_params.atap_model, "ST506") == 0) 986 lp->d_type = DTYPE_ST506; 987 else 988 lp->d_type = DTYPE_ESDI; 989 990 strncpy(lp->d_typename, wd->sc_params.atap_model, 16); 991 strncpy(lp->d_packname, "fictitious", 16); 992 if (wd->sc_capacity > UINT32_MAX) 993 lp->d_secperunit = UINT32_MAX; 994 else 995 lp->d_secperunit = wd->sc_capacity; 996 lp->d_rpm = 3600; 997 lp->d_interleave = 1; 998 lp->d_flags = 0; 999 1000 lp->d_partitions[RAW_PART].p_offset = 0; 1001 lp->d_partitions[RAW_PART].p_size = 1002 lp->d_secperunit * (lp->d_secsize / DEV_BSIZE); 1003 lp->d_partitions[RAW_PART].p_fstype = FS_UNUSED; 1004 lp->d_npartitions = RAW_PART + 1; 1005 1006 lp->d_magic = DISKMAGIC; 1007 lp->d_magic2 = DISKMAGIC; 1008 lp->d_checksum = dkcksum(lp); 1009 } 1010 1011 /* 1012 * Fabricate a default disk label, and try to read the correct one. 1013 */ 1014 void 1015 wdgetdisklabel(struct wd_softc *wd) 1016 { 1017 struct disklabel *lp = wd->sc_dk.dk_label; 1018 const char *errstring; 1019 1020 WDCDEBUG_PRINT(("wdgetdisklabel\n"), DEBUG_FUNCS); 1021 1022 memset(wd->sc_dk.dk_cpulabel, 0, sizeof(struct cpu_disklabel)); 1023 1024 wdgetdefaultlabel(wd, lp); 1025 1026 wd->sc_badsect[0] = -1; 1027 1028 if (wd->drvp->state > RESET) 1029 wd->drvp->drive_flags |= DRIVE_RESET; 1030 errstring = readdisklabel(MAKEWDDEV(0, wd->sc_dev.dv_unit, RAW_PART), 1031 wdstrategy, lp, wd->sc_dk.dk_cpulabel); 1032 if (errstring) { 1033 /* 1034 * This probably happened because the drive's default 1035 * geometry doesn't match the DOS geometry. We 1036 * assume the DOS geometry is now in the label and try 1037 * again. XXX This is a kluge. 1038 */ 1039 if (wd->drvp->state > RESET) 1040 wd->drvp->drive_flags |= DRIVE_RESET; 1041 errstring = readdisklabel(MAKEWDDEV(0, wd->sc_dev.dv_unit, 1042 RAW_PART), wdstrategy, lp, wd->sc_dk.dk_cpulabel); 1043 } 1044 if (errstring) { 1045 printf("%s: %s\n", wd->sc_dev.dv_xname, errstring); 1046 return; 1047 } 1048 1049 if (wd->drvp->state > RESET) 1050 wd->drvp->drive_flags |= DRIVE_RESET; 1051 #ifdef HAS_BAD144_HANDLING 1052 if ((lp->d_flags & D_BADSECT) != 0) 1053 bad144intern(wd); 1054 #endif 1055 } 1056 1057 void 1058 wdperror(const struct wd_softc *wd) 1059 { 1060 static const char *const errstr0_3[] = {"address mark not found", 1061 "track 0 not found", "aborted command", "media change requested", 1062 "id not found", "media changed", "uncorrectable data error", 1063 "bad block detected"}; 1064 static const char *const errstr4_5[] = { 1065 "obsolete (address mark not found)", 1066 "no media/write protected", "aborted command", 1067 "media change requested", "id not found", "media changed", 1068 "uncorrectable data error", "interface CRC error"}; 1069 const char *const *errstr; 1070 int i; 1071 char *sep = ""; 1072 1073 const char *devname = wd->sc_dev.dv_xname; 1074 struct ata_drive_datas *drvp = wd->drvp; 1075 int errno = wd->sc_wdc_bio.r_error; 1076 1077 if (drvp->ata_vers >= 4) 1078 errstr = errstr4_5; 1079 else 1080 errstr = errstr0_3; 1081 1082 printf("%s: (", devname); 1083 1084 if (errno == 0) 1085 printf("error not notified"); 1086 1087 for (i = 0; i < 8; i++) { 1088 if (errno & (1 << i)) { 1089 printf("%s%s", sep, errstr[i]); 1090 sep = ", "; 1091 } 1092 } 1093 printf(")\n"); 1094 } 1095 1096 int 1097 wdioctl(dev_t dev, u_long xfer, caddr_t addr, int flag, struct proc *p) 1098 { 1099 struct wd_softc *wd = device_lookup(&wd_cd, WDUNIT(dev)); 1100 int error = 0; 1101 #ifdef __HAVE_OLD_DISKLABEL 1102 struct disklabel *newlabel = NULL; 1103 #endif 1104 1105 WDCDEBUG_PRINT(("wdioctl\n"), DEBUG_FUNCS); 1106 1107 if ((wd->sc_flags & WDF_LOADED) == 0) 1108 return EIO; 1109 1110 switch (xfer) { 1111 #ifdef HAS_BAD144_HANDLING 1112 case DIOCSBAD: 1113 if ((flag & FWRITE) == 0) 1114 return EBADF; 1115 wd->sc_dk.dk_cpulabel->bad = *(struct dkbad *)addr; 1116 wd->sc_dk.dk_label->d_flags |= D_BADSECT; 1117 bad144intern(wd); 1118 return 0; 1119 #endif 1120 1121 case DIOCBSLIST : 1122 { 1123 u_int32_t count, missing, skip; 1124 struct disk_badsecinfo dbsi; 1125 struct disk_badsectors *dbs; 1126 size_t available; 1127 caddr_t laddr; 1128 1129 dbsi = *(struct disk_badsecinfo *)addr; 1130 missing = wd->sc_bscount; 1131 count = 0; 1132 available = dbsi.dbsi_bufsize; 1133 skip = dbsi.dbsi_skip; 1134 laddr = dbsi.dbsi_buffer; 1135 1136 /* 1137 * We start this loop with the expectation that all of the 1138 * entries will be missed and decrement this counter each 1139 * time we either skip over one (already copied out) or 1140 * we actually copy it back to user space. The structs 1141 * holding the bad sector information are copied directly 1142 * back to user space whilst the summary is returned via 1143 * the struct passed in via the ioctl. 1144 */ 1145 SLIST_FOREACH(dbs, &wd->sc_bslist, dbs_next) { 1146 if (skip > 0) { 1147 missing--; 1148 skip--; 1149 continue; 1150 } 1151 if (available < sizeof(*dbs)) 1152 break; 1153 available -= sizeof(*dbs); 1154 copyout(dbs, laddr, sizeof(*dbs)); 1155 laddr += sizeof(*dbs); 1156 missing--; 1157 count++; 1158 } 1159 dbsi.dbsi_left = missing; 1160 dbsi.dbsi_copied = count; 1161 *(struct disk_badsecinfo *)addr = dbsi; 1162 return 0; 1163 } 1164 1165 case DIOCBSFLUSH : 1166 /* Clean out the bad sector list */ 1167 while (!SLIST_EMPTY(&wd->sc_bslist)) { 1168 void *head = SLIST_FIRST(&wd->sc_bslist); 1169 SLIST_REMOVE_HEAD(&wd->sc_bslist, dbs_next); 1170 free(head, M_TEMP); 1171 } 1172 wd->sc_bscount = 0; 1173 return 0; 1174 1175 case DIOCGDINFO: 1176 *(struct disklabel *)addr = *(wd->sc_dk.dk_label); 1177 return 0; 1178 #ifdef __HAVE_OLD_DISKLABEL 1179 case ODIOCGDINFO: 1180 newlabel = malloc(sizeof *newlabel, M_TEMP, M_WAITOK); 1181 if (newlabel == NULL) 1182 return EIO; 1183 *newlabel = *(wd->sc_dk.dk_label); 1184 if (newlabel->d_npartitions <= OLDMAXPARTITIONS) 1185 memcpy(addr, newlabel, sizeof (struct olddisklabel)); 1186 else 1187 error = ENOTTY; 1188 free(newlabel, M_TEMP); 1189 return error; 1190 #endif 1191 1192 case DIOCGPART: 1193 ((struct partinfo *)addr)->disklab = wd->sc_dk.dk_label; 1194 ((struct partinfo *)addr)->part = 1195 &wd->sc_dk.dk_label->d_partitions[WDPART(dev)]; 1196 return 0; 1197 1198 case DIOCWDINFO: 1199 case DIOCSDINFO: 1200 #ifdef __HAVE_OLD_DISKLABEL 1201 case ODIOCWDINFO: 1202 case ODIOCSDINFO: 1203 #endif 1204 { 1205 struct disklabel *lp; 1206 1207 if ((flag & FWRITE) == 0) 1208 return EBADF; 1209 1210 #ifdef __HAVE_OLD_DISKLABEL 1211 if (xfer == ODIOCSDINFO || xfer == ODIOCWDINFO) { 1212 newlabel = malloc(sizeof *newlabel, M_TEMP, M_WAITOK); 1213 if (newlabel == NULL) 1214 return EIO; 1215 memset(newlabel, 0, sizeof newlabel); 1216 memcpy(newlabel, addr, sizeof (struct olddisklabel)); 1217 lp = newlabel; 1218 } else 1219 #endif 1220 lp = (struct disklabel *)addr; 1221 1222 if ((error = lockmgr(&wd->sc_lock, LK_EXCLUSIVE, NULL)) != 0) 1223 goto bad; 1224 wd->sc_flags |= WDF_LABELLING; 1225 1226 error = setdisklabel(wd->sc_dk.dk_label, 1227 lp, /*wd->sc_dk.dk_openmask : */0, 1228 wd->sc_dk.dk_cpulabel); 1229 if (error == 0) { 1230 if (wd->drvp->state > RESET) 1231 wd->drvp->drive_flags |= DRIVE_RESET; 1232 if (xfer == DIOCWDINFO 1233 #ifdef __HAVE_OLD_DISKLABEL 1234 || xfer == ODIOCWDINFO 1235 #endif 1236 ) 1237 error = writedisklabel(WDLABELDEV(dev), 1238 wdstrategy, wd->sc_dk.dk_label, 1239 wd->sc_dk.dk_cpulabel); 1240 } 1241 1242 wd->sc_flags &= ~WDF_LABELLING; 1243 lockmgr(&wd->sc_lock, LK_RELEASE, NULL); 1244 bad: 1245 #ifdef __HAVE_OLD_DISKLABEL 1246 if (newlabel != NULL) 1247 free(newlabel, M_TEMP); 1248 #endif 1249 return error; 1250 } 1251 1252 case DIOCKLABEL: 1253 if (*(int *)addr) 1254 wd->sc_flags |= WDF_KLABEL; 1255 else 1256 wd->sc_flags &= ~WDF_KLABEL; 1257 return 0; 1258 1259 case DIOCWLABEL: 1260 if ((flag & FWRITE) == 0) 1261 return EBADF; 1262 if (*(int *)addr) 1263 wd->sc_flags |= WDF_WLABEL; 1264 else 1265 wd->sc_flags &= ~WDF_WLABEL; 1266 return 0; 1267 1268 case DIOCGDEFLABEL: 1269 wdgetdefaultlabel(wd, (struct disklabel *)addr); 1270 return 0; 1271 #ifdef __HAVE_OLD_DISKLABEL 1272 case ODIOCGDEFLABEL: 1273 newlabel = malloc(sizeof *newlabel, M_TEMP, M_WAITOK); 1274 if (newlabel == NULL) 1275 return EIO; 1276 wdgetdefaultlabel(wd, newlabel); 1277 if (newlabel->d_npartitions <= OLDMAXPARTITIONS) 1278 memcpy(addr, &newlabel, sizeof (struct olddisklabel)); 1279 else 1280 error = ENOTTY; 1281 free(newlabel, M_TEMP); 1282 return error; 1283 #endif 1284 1285 #ifdef notyet 1286 case DIOCWFORMAT: 1287 if ((flag & FWRITE) == 0) 1288 return EBADF; 1289 { 1290 register struct format_op *fop; 1291 struct iovec aiov; 1292 struct uio auio; 1293 1294 fop = (struct format_op *)addr; 1295 aiov.iov_base = fop->df_buf; 1296 aiov.iov_len = fop->df_count; 1297 auio.uio_iov = &aiov; 1298 auio.uio_iovcnt = 1; 1299 auio.uio_resid = fop->df_count; 1300 auio.uio_segflg = 0; 1301 auio.uio_offset = 1302 fop->df_startblk * wd->sc_dk.dk_label->d_secsize; 1303 auio.uio_procp = p; 1304 error = physio(wdformat, NULL, dev, B_WRITE, minphys, 1305 &auio); 1306 fop->df_count -= auio.uio_resid; 1307 fop->df_reg[0] = wdc->sc_status; 1308 fop->df_reg[1] = wdc->sc_error; 1309 return error; 1310 } 1311 #endif 1312 case DIOCGCACHE: 1313 return wd_getcache(wd, (int *)addr); 1314 1315 case DIOCSCACHE: 1316 return wd_setcache(wd, *(int *)addr); 1317 1318 case DIOCCACHESYNC: 1319 return wd_flushcache(wd, AT_WAIT); 1320 1321 case ATAIOCCOMMAND: 1322 /* 1323 * Make sure this command is (relatively) safe first 1324 */ 1325 if ((((atareq_t *) addr)->flags & ATACMD_READ) == 0 && 1326 (flag & FWRITE) == 0) 1327 return (EBADF); 1328 { 1329 struct wd_ioctl *wi; 1330 atareq_t *atareq = (atareq_t *) addr; 1331 int error; 1332 1333 wi = wi_get(); 1334 wi->wi_softc = wd; 1335 wi->wi_atareq = *atareq; 1336 1337 if (atareq->datalen && atareq->flags & 1338 (ATACMD_READ | ATACMD_WRITE)) { 1339 wi->wi_iov.iov_base = atareq->databuf; 1340 wi->wi_iov.iov_len = atareq->datalen; 1341 wi->wi_uio.uio_iov = &wi->wi_iov; 1342 wi->wi_uio.uio_iovcnt = 1; 1343 wi->wi_uio.uio_resid = atareq->datalen; 1344 wi->wi_uio.uio_offset = 0; 1345 wi->wi_uio.uio_segflg = UIO_USERSPACE; 1346 wi->wi_uio.uio_rw = 1347 (atareq->flags & ATACMD_READ) ? B_READ : B_WRITE; 1348 wi->wi_uio.uio_procp = p; 1349 error = physio(wdioctlstrategy, &wi->wi_bp, dev, 1350 (atareq->flags & ATACMD_READ) ? B_READ : B_WRITE, 1351 minphys, &wi->wi_uio); 1352 } else { 1353 /* No need to call physio if we don't have any 1354 user data */ 1355 wi->wi_bp.b_flags = 0; 1356 wi->wi_bp.b_data = 0; 1357 wi->wi_bp.b_bcount = 0; 1358 wi->wi_bp.b_dev = 0; 1359 wi->wi_bp.b_proc = p; 1360 wdioctlstrategy(&wi->wi_bp); 1361 error = wi->wi_bp.b_error; 1362 } 1363 *atareq = wi->wi_atareq; 1364 wi_free(wi); 1365 return(error); 1366 } 1367 1368 default: 1369 return ENOTTY; 1370 } 1371 1372 #ifdef DIAGNOSTIC 1373 panic("wdioctl: impossible"); 1374 #endif 1375 } 1376 1377 #ifdef B_FORMAT 1378 int 1379 wdformat(struct buf *bp) 1380 { 1381 1382 bp->b_flags |= B_FORMAT; 1383 return wdstrategy(bp); 1384 } 1385 #endif 1386 1387 int 1388 wdsize(dev_t dev) 1389 { 1390 struct wd_softc *wd; 1391 int part, omask; 1392 int size; 1393 1394 WDCDEBUG_PRINT(("wdsize\n"), DEBUG_FUNCS); 1395 1396 wd = device_lookup(&wd_cd, WDUNIT(dev)); 1397 if (wd == NULL) 1398 return (-1); 1399 1400 part = WDPART(dev); 1401 omask = wd->sc_dk.dk_openmask & (1 << part); 1402 1403 if (omask == 0 && wdopen(dev, 0, S_IFBLK, NULL) != 0) 1404 return (-1); 1405 if (wd->sc_dk.dk_label->d_partitions[part].p_fstype != FS_SWAP) 1406 size = -1; 1407 else 1408 size = wd->sc_dk.dk_label->d_partitions[part].p_size * 1409 (wd->sc_dk.dk_label->d_secsize / DEV_BSIZE); 1410 if (omask == 0 && wdclose(dev, 0, S_IFBLK, NULL) != 0) 1411 return (-1); 1412 return (size); 1413 } 1414 1415 /* #define WD_DUMP_NOT_TRUSTED if you just want to watch */ 1416 static int wddoingadump = 0; 1417 static int wddumprecalibrated = 0; 1418 static int wddumpmulti = 1; 1419 1420 /* 1421 * Dump core after a system crash. 1422 */ 1423 int 1424 wddump(dev_t dev, daddr_t blkno, caddr_t va, size_t size) 1425 { 1426 struct wd_softc *wd; /* disk unit to do the I/O */ 1427 struct disklabel *lp; /* disk's disklabel */ 1428 int part, err; 1429 int nblks; /* total number of sectors left to write */ 1430 1431 /* Check if recursive dump; if so, punt. */ 1432 if (wddoingadump) 1433 return EFAULT; 1434 wddoingadump = 1; 1435 1436 wd = device_lookup(&wd_cd, WDUNIT(dev)); 1437 if (wd == NULL) 1438 return (ENXIO); 1439 1440 part = WDPART(dev); 1441 1442 /* Convert to disk sectors. Request must be a multiple of size. */ 1443 lp = wd->sc_dk.dk_label; 1444 if ((size % lp->d_secsize) != 0) 1445 return EFAULT; 1446 nblks = size / lp->d_secsize; 1447 blkno = blkno / (lp->d_secsize / DEV_BSIZE); 1448 1449 /* Check transfer bounds against partition size. */ 1450 if ((blkno < 0) || ((blkno + nblks) > lp->d_partitions[part].p_size)) 1451 return EINVAL; 1452 1453 /* Offset block number to start of partition. */ 1454 blkno += lp->d_partitions[part].p_offset; 1455 1456 /* Recalibrate, if first dump transfer. */ 1457 if (wddumprecalibrated == 0) { 1458 wddumpmulti = wd->sc_multi; 1459 wddumprecalibrated = 1; 1460 wd->atabus->ata_reset_channel(wd->drvp, AT_POLL | AT_RST_EMERG); 1461 wd->drvp->state = RESET; 1462 } 1463 1464 while (nblks > 0) { 1465 wd->sc_bp = NULL; 1466 wd->sc_wdc_bio.blkno = blkno; 1467 wd->sc_wdc_bio.flags = ATA_POLL; 1468 if (wd->sc_flags & WDF_LBA48 && blkno > LBA48_THRESHOLD) 1469 wd->sc_wdc_bio.flags |= ATA_LBA48; 1470 if (wd->sc_flags & WDF_LBA) 1471 wd->sc_wdc_bio.flags |= ATA_LBA; 1472 wd->sc_wdc_bio.bcount = 1473 min(nblks, wddumpmulti) * lp->d_secsize; 1474 wd->sc_wdc_bio.databuf = va; 1475 #ifndef WD_DUMP_NOT_TRUSTED 1476 switch (wd->atabus->ata_bio(wd->drvp, &wd->sc_wdc_bio)) { 1477 case WDC_TRY_AGAIN: 1478 panic("wddump: try again"); 1479 break; 1480 case WDC_QUEUED: 1481 panic("wddump: polled command has been queued"); 1482 break; 1483 case WDC_COMPLETE: 1484 break; 1485 } 1486 switch(wd->sc_wdc_bio.error) { 1487 case TIMEOUT: 1488 printf("wddump: device timed out"); 1489 err = EIO; 1490 break; 1491 case ERR_DF: 1492 printf("wddump: drive fault"); 1493 err = EIO; 1494 break; 1495 case ERR_DMA: 1496 printf("wddump: DMA error"); 1497 err = EIO; 1498 break; 1499 case ERROR: 1500 printf("wddump: "); 1501 wdperror(wd); 1502 err = EIO; 1503 break; 1504 case NOERROR: 1505 err = 0; 1506 break; 1507 default: 1508 panic("wddump: unknown error type"); 1509 } 1510 if (err != 0) { 1511 printf("\n"); 1512 return err; 1513 } 1514 #else /* WD_DUMP_NOT_TRUSTED */ 1515 /* Let's just talk about this first... */ 1516 printf("wd%d: dump addr 0x%x, cylin %d, head %d, sector %d\n", 1517 unit, va, cylin, head, sector); 1518 delay(500 * 1000); /* half a second */ 1519 #endif 1520 1521 /* update block count */ 1522 nblks -= min(nblks, wddumpmulti); 1523 blkno += min(nblks, wddumpmulti); 1524 va += min(nblks, wddumpmulti) * lp->d_secsize; 1525 } 1526 1527 wddoingadump = 0; 1528 return 0; 1529 } 1530 1531 #ifdef HAS_BAD144_HANDLING 1532 /* 1533 * Internalize the bad sector table. 1534 */ 1535 void 1536 bad144intern(struct wd_softc *wd) 1537 { 1538 struct dkbad *bt = &wd->sc_dk.dk_cpulabel->bad; 1539 struct disklabel *lp = wd->sc_dk.dk_label; 1540 int i = 0; 1541 1542 WDCDEBUG_PRINT(("bad144intern\n"), DEBUG_XFERS); 1543 1544 for (; i < NBT_BAD; i++) { 1545 if (bt->bt_bad[i].bt_cyl == 0xffff) 1546 break; 1547 wd->sc_badsect[i] = 1548 bt->bt_bad[i].bt_cyl * lp->d_secpercyl + 1549 (bt->bt_bad[i].bt_trksec >> 8) * lp->d_nsectors + 1550 (bt->bt_bad[i].bt_trksec & 0xff); 1551 } 1552 for (; i < NBT_BAD+1; i++) 1553 wd->sc_badsect[i] = -1; 1554 } 1555 #endif 1556 1557 int 1558 wd_get_params(struct wd_softc *wd, u_int8_t flags, struct ataparams *params) 1559 { 1560 switch (wd->atabus->ata_get_params(wd->drvp, flags, params)) { 1561 case CMD_AGAIN: 1562 return 1; 1563 case CMD_ERR: 1564 /* 1565 * We `know' there's a drive here; just assume it's old. 1566 * This geometry is only used to read the MBR and print a 1567 * (false) attach message. 1568 */ 1569 strncpy(params->atap_model, "ST506", 1570 sizeof params->atap_model); 1571 params->atap_config = ATA_CFG_FIXED; 1572 params->atap_cylinders = 1024; 1573 params->atap_heads = 8; 1574 params->atap_sectors = 17; 1575 params->atap_multi = 1; 1576 params->atap_capabilities1 = params->atap_capabilities2 = 0; 1577 wd->drvp->ata_vers = -1; /* Mark it as pre-ATA */ 1578 return 0; 1579 case CMD_OK: 1580 return 0; 1581 default: 1582 panic("wd_get_params: bad return code from ata_get_params"); 1583 /* NOTREACHED */ 1584 } 1585 } 1586 1587 int 1588 wd_getcache(struct wd_softc *wd, int *bitsp) 1589 { 1590 struct ataparams params; 1591 1592 if (wd_get_params(wd, AT_WAIT, ¶ms) != 0) 1593 return EIO; 1594 if (params.atap_cmd_set1 == 0x0000 || 1595 params.atap_cmd_set1 == 0xffff || 1596 (params.atap_cmd_set1 & WDC_CMD1_CACHE) == 0) { 1597 *bitsp = 0; 1598 return 0; 1599 } 1600 *bitsp = DKCACHE_WCHANGE | DKCACHE_READ; 1601 if (params.atap_cmd1_en & WDC_CMD1_CACHE) 1602 *bitsp |= DKCACHE_WRITE; 1603 1604 return 0; 1605 } 1606 1607 int 1608 wd_setcache(struct wd_softc *wd, int bits) 1609 { 1610 struct ataparams params; 1611 struct wdc_command wdc_c; 1612 1613 if (wd_get_params(wd, AT_WAIT, ¶ms) != 0) 1614 return EIO; 1615 1616 if (params.atap_cmd_set1 == 0x0000 || 1617 params.atap_cmd_set1 == 0xffff || 1618 (params.atap_cmd_set1 & WDC_CMD1_CACHE) == 0) 1619 return EOPNOTSUPP; 1620 1621 if ((bits & DKCACHE_READ) == 0 || 1622 (bits & DKCACHE_SAVE) != 0) 1623 return EOPNOTSUPP; 1624 1625 memset(&wdc_c, 0, sizeof(struct wdc_command)); 1626 wdc_c.r_command = SET_FEATURES; 1627 wdc_c.r_st_bmask = 0; 1628 wdc_c.r_st_pmask = 0; 1629 wdc_c.timeout = 30000; /* 30s timeout */ 1630 wdc_c.flags = AT_WAIT; 1631 if (bits & DKCACHE_WRITE) 1632 wdc_c.r_features = WDSF_WRITE_CACHE_EN; 1633 else 1634 wdc_c.r_features = WDSF_WRITE_CACHE_DS; 1635 if (wd->atabus->ata_exec_command(wd->drvp, &wdc_c) != WDC_COMPLETE) { 1636 printf("%s: wd_setcache command not complete\n", 1637 wd->sc_dev.dv_xname); 1638 return EIO; 1639 } 1640 if (wdc_c.flags & (AT_ERROR | AT_TIMEOU | AT_DF)) { 1641 printf("%s: wd_setcache command error 0x%x\n", 1642 wd->sc_dev.dv_xname, wdc_c.flags); 1643 return EIO; 1644 } 1645 if (wdc_c.flags & ERR_NODEV) 1646 return ENODEV; 1647 return 0; 1648 } 1649 1650 int 1651 wd_flushcache(struct wd_softc *wd, int flags) 1652 { 1653 struct wdc_command wdc_c; 1654 1655 if (wd->drvp->ata_vers < 4) /* WDCC_FLUSHCACHE is here since ATA-4 */ 1656 return ENODEV; 1657 memset(&wdc_c, 0, sizeof(struct wdc_command)); 1658 if ((wd->sc_params.atap_cmd2_en & ATA_CMD2_LBA48) != 0 && 1659 (wd->sc_params.atap_cmd2_en & ATA_CMD2_FCE) != 0) 1660 wdc_c.r_command = WDCC_FLUSHCACHE_EXT; 1661 else 1662 wdc_c.r_command = WDCC_FLUSHCACHE; 1663 wdc_c.r_st_bmask = WDCS_DRDY; 1664 wdc_c.r_st_pmask = WDCS_DRDY; 1665 wdc_c.flags = flags; 1666 wdc_c.timeout = 30000; /* 30s timeout */ 1667 if (wd->atabus->ata_exec_command(wd->drvp, &wdc_c) != WDC_COMPLETE) { 1668 printf("%s: flush cache command didn't complete\n", 1669 wd->sc_dev.dv_xname); 1670 return EIO; 1671 } 1672 if (wdc_c.flags & ERR_NODEV) 1673 return ENODEV; 1674 if (wdc_c.flags & AT_TIMEOU) { 1675 printf("%s: flush cache command timeout\n", 1676 wd->sc_dev.dv_xname); 1677 return EIO; 1678 } 1679 if (wdc_c.flags & AT_ERROR) { 1680 if (wdc_c.r_error == WDCE_ABRT) /* command not supported */ 1681 return ENODEV; 1682 printf("%s: flush cache command: error 0x%x\n", 1683 wd->sc_dev.dv_xname, wdc_c.r_error); 1684 return EIO; 1685 } 1686 if (wdc_c.flags & AT_DF) { 1687 printf("%s: flush cache command: drive fault\n", 1688 wd->sc_dev.dv_xname); 1689 return EIO; 1690 } 1691 return 0; 1692 } 1693 1694 void 1695 wd_shutdown(void *arg) 1696 { 1697 struct wd_softc *wd = arg; 1698 wd_flushcache(wd, AT_POLL); 1699 } 1700 1701 /* 1702 * Allocate space for a ioctl queue structure. Mostly taken from 1703 * scsipi_ioctl.c 1704 */ 1705 struct wd_ioctl * 1706 wi_get(void) 1707 { 1708 struct wd_ioctl *wi; 1709 int s; 1710 1711 wi = malloc(sizeof(struct wd_ioctl), M_TEMP, M_WAITOK|M_ZERO); 1712 simple_lock_init(&wi->wi_bp.b_interlock); 1713 s = splbio(); 1714 LIST_INSERT_HEAD(&wi_head, wi, wi_list); 1715 splx(s); 1716 return (wi); 1717 } 1718 1719 /* 1720 * Free an ioctl structure and remove it from our list 1721 */ 1722 1723 void 1724 wi_free(struct wd_ioctl *wi) 1725 { 1726 int s; 1727 1728 s = splbio(); 1729 LIST_REMOVE(wi, wi_list); 1730 splx(s); 1731 free(wi, M_TEMP); 1732 } 1733 1734 /* 1735 * Find a wd_ioctl structure based on the struct buf. 1736 */ 1737 1738 struct wd_ioctl * 1739 wi_find(struct buf *bp) 1740 { 1741 struct wd_ioctl *wi; 1742 int s; 1743 1744 s = splbio(); 1745 for (wi = wi_head.lh_first; wi != 0; wi = wi->wi_list.le_next) 1746 if (bp == &wi->wi_bp) 1747 break; 1748 splx(s); 1749 return (wi); 1750 } 1751 1752 /* 1753 * Ioctl pseudo strategy routine 1754 * 1755 * This is mostly stolen from scsipi_ioctl.c:scsistrategy(). What 1756 * happens here is: 1757 * 1758 * - wdioctl() queues a wd_ioctl structure. 1759 * 1760 * - wdioctl() calls physio/wdioctlstrategy based on whether or not 1761 * user space I/O is required. If physio() is called, physio() eventually 1762 * calls wdioctlstrategy(). 1763 * 1764 * - In either case, wdioctlstrategy() calls wd->atabus->ata_exec_command() 1765 * to perform the actual command 1766 * 1767 * The reason for the use of the pseudo strategy routine is because 1768 * when doing I/O to/from user space, physio _really_ wants to be in 1769 * the loop. We could put the entire buffer into the ioctl request 1770 * structure, but that won't scale if we want to do things like download 1771 * microcode. 1772 */ 1773 1774 void 1775 wdioctlstrategy(struct buf *bp) 1776 { 1777 struct wd_ioctl *wi; 1778 struct wdc_command wdc_c; 1779 int error = 0; 1780 1781 wi = wi_find(bp); 1782 if (wi == NULL) { 1783 printf("user_strat: No ioctl\n"); 1784 error = EINVAL; 1785 goto bad; 1786 } 1787 1788 memset(&wdc_c, 0, sizeof(wdc_c)); 1789 1790 /* 1791 * Abort if physio broke up the transfer 1792 */ 1793 1794 if (bp->b_bcount != wi->wi_atareq.datalen) { 1795 printf("physio split wd ioctl request... cannot proceed\n"); 1796 error = EIO; 1797 goto bad; 1798 } 1799 1800 /* 1801 * Abort if we didn't get a buffer size that was a multiple of 1802 * our sector size (or was larger than NBBY) 1803 */ 1804 1805 if ((bp->b_bcount % wi->wi_softc->sc_dk.dk_label->d_secsize) != 0 || 1806 (bp->b_bcount / wi->wi_softc->sc_dk.dk_label->d_secsize) >= 1807 (1 << NBBY)) { 1808 error = EINVAL; 1809 goto bad; 1810 } 1811 1812 /* 1813 * Make sure a timeout was supplied in the ioctl request 1814 */ 1815 1816 if (wi->wi_atareq.timeout == 0) { 1817 error = EINVAL; 1818 goto bad; 1819 } 1820 1821 if (wi->wi_atareq.flags & ATACMD_READ) 1822 wdc_c.flags |= AT_READ; 1823 else if (wi->wi_atareq.flags & ATACMD_WRITE) 1824 wdc_c.flags |= AT_WRITE; 1825 1826 if (wi->wi_atareq.flags & ATACMD_READREG) 1827 wdc_c.flags |= AT_READREG; 1828 1829 wdc_c.flags |= AT_WAIT; 1830 1831 wdc_c.timeout = wi->wi_atareq.timeout; 1832 wdc_c.r_command = wi->wi_atareq.command; 1833 wdc_c.r_head = wi->wi_atareq.head & 0x0f; 1834 wdc_c.r_cyl = wi->wi_atareq.cylinder; 1835 wdc_c.r_sector = wi->wi_atareq.sec_num; 1836 wdc_c.r_count = wi->wi_atareq.sec_count; 1837 wdc_c.r_features = wi->wi_atareq.features; 1838 wdc_c.r_st_bmask = WDCS_DRDY; 1839 wdc_c.r_st_pmask = WDCS_DRDY; 1840 wdc_c.data = wi->wi_bp.b_data; 1841 wdc_c.bcount = wi->wi_bp.b_bcount; 1842 1843 if (wi->wi_softc->atabus->ata_exec_command(wi->wi_softc->drvp, &wdc_c) 1844 != WDC_COMPLETE) { 1845 wi->wi_atareq.retsts = ATACMD_ERROR; 1846 goto bad; 1847 } 1848 1849 if (wdc_c.flags & (AT_ERROR | AT_TIMEOU | AT_DF)) { 1850 if (wdc_c.flags & AT_ERROR) { 1851 wi->wi_atareq.retsts = ATACMD_ERROR; 1852 wi->wi_atareq.error = wdc_c.r_error; 1853 } else if (wdc_c.flags & AT_DF) 1854 wi->wi_atareq.retsts = ATACMD_DF; 1855 else 1856 wi->wi_atareq.retsts = ATACMD_TIMEOUT; 1857 } else { 1858 wi->wi_atareq.retsts = ATACMD_OK; 1859 if (wi->wi_atareq.flags & ATACMD_READREG) { 1860 wi->wi_atareq.head = wdc_c.r_head ; 1861 wi->wi_atareq.cylinder = wdc_c.r_cyl; 1862 wi->wi_atareq.sec_num = wdc_c.r_sector; 1863 wi->wi_atareq.sec_count = wdc_c.r_count; 1864 wi->wi_atareq.features = wdc_c.r_features; 1865 wi->wi_atareq.error = wdc_c.r_error; 1866 } 1867 } 1868 1869 bp->b_error = 0; 1870 biodone(bp); 1871 return; 1872 bad: 1873 bp->b_flags |= B_ERROR; 1874 bp->b_error = error; 1875 biodone(bp); 1876 } 1877
Indexes created Mon Sep 29 21:09:56 GMT 2025