wd.c revision 1.283
1 /* $NetBSD: wd.c,v 1.283 2004/08/03 22:03:46 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 1.283 2004/08/03 22:03:46 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); 464 465 return (0); 466 } 467 468 /* 469 * Read/write routine for a buffer. Validates the arguments and schedules the 470 * transfer. Does not wait for the transfer to complete. 471 */ 472 void 473 wdstrategy(struct buf *bp) 474 { 475 struct wd_softc *wd = device_lookup(&wd_cd, WDUNIT(bp->b_dev)); 476 struct disklabel *lp = wd->sc_dk.dk_label; 477 daddr_t blkno; 478 int s; 479 480 WDCDEBUG_PRINT(("wdstrategy (%s)\n", wd->sc_dev.dv_xname), 481 DEBUG_XFERS); 482 483 /* Valid request? */ 484 if (bp->b_blkno < 0 || 485 (bp->b_bcount % lp->d_secsize) != 0 || 486 (bp->b_bcount / lp->d_secsize) >= (1 << NBBY)) { 487 bp->b_error = EINVAL; 488 goto bad; 489 } 490 491 /* If device invalidated (e.g. media change, door open), error. */ 492 if ((wd->sc_flags & WDF_LOADED) == 0) { 493 bp->b_error = EIO; 494 goto bad; 495 } 496 497 /* If it's a null transfer, return immediately. */ 498 if (bp->b_bcount == 0) 499 goto done; 500 501 /* 502 * Do bounds checking, adjust transfer. if error, process. 503 * If end of partition, just return. 504 */ 505 if (WDPART(bp->b_dev) == RAW_PART) { 506 if (bounds_check_with_mediasize(bp, DEV_BSIZE, 507 wd->sc_capacity) <= 0) 508 goto done; 509 } else { 510 if (bounds_check_with_label(&wd->sc_dk, bp, 511 (wd->sc_flags & (WDF_WLABEL|WDF_LABELLING)) != 0) <= 0) 512 goto done; 513 } 514 515 /* 516 * Now convert the block number to absolute and put it in 517 * terms of the device's logical block size. 518 */ 519 if (lp->d_secsize >= DEV_BSIZE) 520 blkno = bp->b_blkno / (lp->d_secsize / DEV_BSIZE); 521 else 522 blkno = bp->b_blkno * (DEV_BSIZE / lp->d_secsize); 523 524 if (WDPART(bp->b_dev) != RAW_PART) 525 blkno += lp->d_partitions[WDPART(bp->b_dev)].p_offset; 526 527 bp->b_rawblkno = blkno; 528 529 /* 530 * If the transfer about to be attempted contains only a block that 531 * is known to be bad then return an error for the transfer without 532 * even attempting to start a transfer up under the premis that we 533 * will just end up doing more retries for a transfer that will end 534 * up failing again. 535 * XXX:SMP - mutex required to protect with DIOCBSFLUSH 536 */ 537 if (__predict_false(!SLIST_EMPTY(&wd->sc_bslist))) { 538 struct disk_badsectors *dbs; 539 daddr_t maxblk = blkno + (bp->b_bcount >> DEV_BSHIFT) - 1; 540 541 SLIST_FOREACH(dbs, &wd->sc_bslist, dbs_next) 542 if ((dbs->dbs_min <= blkno && blkno <= dbs->dbs_max) || 543 (dbs->dbs_min <= maxblk && maxblk <= dbs->dbs_max)){ 544 bp->b_error = EIO; 545 goto bad; 546 } 547 } 548 549 /* Queue transfer on drive, activate drive and controller if idle. */ 550 s = splbio(); 551 BUFQ_PUT(&wd->sc_q, bp); 552 wdstart(wd); 553 splx(s); 554 return; 555 bad: 556 bp->b_flags |= B_ERROR; 557 done: 558 /* Toss transfer; we're done early. */ 559 bp->b_resid = bp->b_bcount; 560 biodone(bp); 561 } 562 563 /* 564 * Queue a drive for I/O. 565 */ 566 void 567 wdstart(void *arg) 568 { 569 struct wd_softc *wd = arg; 570 struct buf *bp = NULL; 571 572 WDCDEBUG_PRINT(("wdstart %s\n", wd->sc_dev.dv_xname), 573 DEBUG_XFERS); 574 while (wd->openings > 0) { 575 576 /* Is there a buf for us ? */ 577 if ((bp = BUFQ_GET(&wd->sc_q)) == NULL) 578 return; 579 580 /* 581 * Make the command. First lock the device 582 */ 583 wd->openings--; 584 585 wd->retries = 0; 586 __wdstart(wd, bp); 587 } 588 } 589 590 static void 591 wd_split_mod15_write(struct buf *bp) 592 { 593 struct buf *obp = bp->b_private; 594 struct wd_softc *sc = wd_cd.cd_devs[DISKUNIT(obp->b_dev)]; 595 596 if (__predict_false(bp->b_flags & B_ERROR) != 0) { 597 /* 598 * Propagate the error. If this was the first half of 599 * the original transfer, make sure to account for that 600 * in the residual. 601 */ 602 if (bp->b_data == obp->b_data) 603 bp->b_resid += bp->b_bcount; 604 goto done; 605 } 606 607 /* 608 * If this was the second half of the transfer, we're all done! 609 */ 610 if (bp->b_data != obp->b_data) 611 goto done; 612 613 /* 614 * Advance the pointer to the second half and issue that command 615 * using the same opening. 616 */ 617 bp->b_flags = obp->b_flags | B_CALL; 618 bp->b_data += bp->b_bcount; 619 bp->b_blkno += (bp->b_bcount / 512); 620 bp->b_rawblkno += (bp->b_bcount / 512); 621 __wdstart(sc, bp); 622 return; 623 624 done: 625 obp->b_flags |= (bp->b_flags & (B_EINTR|B_ERROR)); 626 obp->b_error = bp->b_error; 627 obp->b_resid = bp->b_resid; 628 pool_put(&bufpool, bp); 629 biodone(obp); 630 sc->openings++; 631 /* wddone() will call wdstart() */ 632 } 633 634 void 635 __wdstart(struct wd_softc *wd, struct buf *bp) 636 { 637 638 /* 639 * Deal with the "split mod15 write" quirk. We just divide the 640 * transfer in two, doing the first half and then then second half 641 * with the same command opening. 642 * 643 * Note we MUST do this here, because we can't let insertion 644 * into the bufq cause the transfers to be re-merged. 645 */ 646 if (__predict_false((wd->sc_quirks & WD_QUIRK_SPLIT_MOD15_WRITE) != 0 && 647 (bp->b_flags & B_READ) == 0 && 648 bp->b_bcount > 512 && 649 ((bp->b_bcount / 512) % 15) == 1)) { 650 struct buf *nbp; 651 652 /* already at splbio */ 653 nbp = pool_get(&bufpool, PR_NOWAIT); 654 if (__predict_false(nbp == NULL)) { 655 /* No memory -- fail the iop. */ 656 bp->b_error = ENOMEM; 657 bp->b_flags |= B_ERROR; 658 bp->b_resid = bp->b_bcount; 659 biodone(bp); 660 wd->openings++; 661 return; 662 } 663 664 BUF_INIT(nbp); 665 nbp->b_error = 0; 666 nbp->b_proc = bp->b_proc; 667 nbp->b_vp = NULLVP; 668 nbp->b_dev = bp->b_dev; 669 670 nbp->b_bcount = bp->b_bcount / 2; 671 nbp->b_bufsize = bp->b_bcount / 2; 672 nbp->b_data = bp->b_data; 673 674 nbp->b_blkno = bp->b_blkno; 675 nbp->b_rawblkno = bp->b_rawblkno; 676 677 nbp->b_flags = bp->b_flags | B_CALL; 678 nbp->b_iodone = wd_split_mod15_write; 679 680 /* Put ptr to orig buf in b_private and use new buf */ 681 nbp->b_private = bp; 682 683 BIO_COPYPRIO(nbp, bp); 684 685 bp = nbp; 686 } 687 688 wd->sc_wdc_bio.blkno = bp->b_rawblkno; 689 wd->sc_wdc_bio.blkdone =0; 690 wd->sc_bp = bp; 691 /* 692 * If we're retrying, retry in single-sector mode. This will give us 693 * the sector number of the problem, and will eventually allow the 694 * transfer to succeed. 695 */ 696 if (wd->retries >= WDIORETRIES_SINGLE) 697 wd->sc_wdc_bio.flags = ATA_SINGLE; 698 else 699 wd->sc_wdc_bio.flags = 0; 700 if (wd->sc_flags & WDF_LBA48 && wd->sc_wdc_bio.blkno > LBA48_THRESHOLD) 701 wd->sc_wdc_bio.flags |= ATA_LBA48; 702 if (wd->sc_flags & WDF_LBA) 703 wd->sc_wdc_bio.flags |= ATA_LBA; 704 if (bp->b_flags & B_READ) 705 wd->sc_wdc_bio.flags |= ATA_READ; 706 wd->sc_wdc_bio.bcount = bp->b_bcount; 707 wd->sc_wdc_bio.databuf = bp->b_data; 708 /* Instrumentation. */ 709 disk_busy(&wd->sc_dk); 710 switch (wd->atabus->ata_bio(wd->drvp, &wd->sc_wdc_bio)) { 711 case WDC_TRY_AGAIN: 712 callout_reset(&wd->sc_restart_ch, hz, wdrestart, wd); 713 break; 714 case WDC_QUEUED: 715 case WDC_COMPLETE: 716 break; 717 default: 718 panic("__wdstart: bad return code from ata_bio()"); 719 } 720 } 721 722 void 723 wddone(void *v) 724 { 725 struct wd_softc *wd = v; 726 struct buf *bp = wd->sc_bp; 727 const char *errmsg; 728 int do_perror = 0; 729 WDCDEBUG_PRINT(("wddone %s\n", wd->sc_dev.dv_xname), 730 DEBUG_XFERS); 731 732 if (bp == NULL) 733 return; 734 bp->b_resid = wd->sc_wdc_bio.bcount; 735 switch (wd->sc_wdc_bio.error) { 736 case ERR_DMA: 737 errmsg = "DMA error"; 738 goto retry; 739 case ERR_DF: 740 errmsg = "device fault"; 741 goto retry; 742 case TIMEOUT: 743 errmsg = "device timeout"; 744 goto retry; 745 case ERR_RESET: 746 errmsg = "channel reset"; 747 goto retry2; 748 case ERROR: 749 /* Don't care about media change bits */ 750 if (wd->sc_wdc_bio.r_error != 0 && 751 (wd->sc_wdc_bio.r_error & ~(WDCE_MC | WDCE_MCR)) == 0) 752 goto noerror; 753 errmsg = "error"; 754 do_perror = 1; 755 retry: /* Just reset and retry. Can we do more ? */ 756 wd->atabus->ata_reset_channel(wd->drvp, 0); 757 retry2: 758 diskerr(bp, "wd", errmsg, LOG_PRINTF, 759 wd->sc_wdc_bio.blkdone, wd->sc_dk.dk_label); 760 if (wd->retries < WDIORETRIES) 761 printf(", retrying\n"); 762 if (do_perror) 763 wdperror(wd); 764 if (wd->retries < WDIORETRIES) { 765 wd->retries++; 766 callout_reset(&wd->sc_restart_ch, RECOVERYTIME, 767 wdrestart, wd); 768 return; 769 } 770 printf("\n"); 771 772 /* 773 * Not all errors indicate a failed block but those that do, 774 * put the block on the bad-block list for the device. Only 775 * do this for reads because the drive should do it for writes, 776 * itself, according to Manuel. 777 */ 778 if ((bp->b_flags & B_READ) && 779 ((wd->drvp->ata_vers >= 4 && wd->sc_wdc_bio.r_error & 64) || 780 (wd->drvp->ata_vers < 4 && wd->sc_wdc_bio.r_error & 192))) { 781 struct disk_badsectors *dbs; 782 783 dbs = malloc(sizeof *dbs, M_TEMP, M_WAITOK); 784 dbs->dbs_min = bp->b_rawblkno; 785 dbs->dbs_max = dbs->dbs_min + (bp->b_bcount >> DEV_BSHIFT) - 1; 786 microtime(&dbs->dbs_failedat); 787 SLIST_INSERT_HEAD(&wd->sc_bslist, dbs, dbs_next); 788 wd->sc_bscount++; 789 } 790 791 bp->b_flags |= B_ERROR; 792 bp->b_error = EIO; 793 break; 794 case NOERROR: 795 noerror: if ((wd->sc_wdc_bio.flags & ATA_CORR) || wd->retries > 0) 796 printf("%s: soft error (corrected)\n", 797 wd->sc_dev.dv_xname); 798 break; 799 case ERR_NODEV: 800 bp->b_flags |= B_ERROR; 801 bp->b_error = EIO; 802 break; 803 } 804 disk_unbusy(&wd->sc_dk, (bp->b_bcount - bp->b_resid), 805 (bp->b_flags & B_READ)); 806 #if NRND > 0 807 rnd_add_uint32(&wd->rnd_source, bp->b_blkno); 808 #endif 809 /* XXX Yuck, but we don't want to increment openings in this case */ 810 if (__predict_false((bp->b_flags & B_CALL) != 0 && 811 bp->b_iodone == wd_split_mod15_write)) 812 biodone(bp); 813 else { 814 biodone(bp); 815 wd->openings++; 816 } 817 wdstart(wd); 818 } 819 820 void 821 wdrestart(void *v) 822 { 823 struct wd_softc *wd = v; 824 struct buf *bp = wd->sc_bp; 825 int s; 826 WDCDEBUG_PRINT(("wdrestart %s\n", wd->sc_dev.dv_xname), 827 DEBUG_XFERS); 828 829 s = splbio(); 830 __wdstart(v, bp); 831 splx(s); 832 } 833 834 int 835 wdread(dev_t dev, struct uio *uio, int flags) 836 { 837 838 WDCDEBUG_PRINT(("wdread\n"), DEBUG_XFERS); 839 return (physio(wdstrategy, NULL, dev, B_READ, minphys, uio)); 840 } 841 842 int 843 wdwrite(dev_t dev, struct uio *uio, int flags) 844 { 845 846 WDCDEBUG_PRINT(("wdwrite\n"), DEBUG_XFERS); 847 return (physio(wdstrategy, NULL, dev, B_WRITE, minphys, uio)); 848 } 849 850 int 851 wdopen(dev_t dev, int flag, int fmt, struct proc *p) 852 { 853 struct wd_softc *wd; 854 int part, error; 855 856 WDCDEBUG_PRINT(("wdopen\n"), DEBUG_FUNCS); 857 wd = device_lookup(&wd_cd, WDUNIT(dev)); 858 if (wd == NULL) 859 return (ENXIO); 860 861 if ((wd->sc_dev.dv_flags & DVF_ACTIVE) == 0) 862 return (ENODEV); 863 864 /* 865 * If this is the first open of this device, add a reference 866 * to the adapter. 867 */ 868 if (wd->sc_dk.dk_openmask == 0 && 869 (error = wd->atabus->ata_addref(wd->drvp)) != 0) 870 return (error); 871 872 if ((error = lockmgr(&wd->sc_lock, LK_EXCLUSIVE, NULL)) != 0) 873 goto bad4; 874 875 if (wd->sc_dk.dk_openmask != 0) { 876 /* 877 * If any partition is open, but the disk has been invalidated, 878 * disallow further opens. 879 */ 880 if ((wd->sc_flags & WDF_LOADED) == 0) { 881 error = EIO; 882 goto bad3; 883 } 884 } else { 885 if ((wd->sc_flags & WDF_LOADED) == 0) { 886 wd->sc_flags |= WDF_LOADED; 887 888 /* Load the physical device parameters. */ 889 wd_get_params(wd, AT_WAIT, &wd->sc_params); 890 891 /* Load the partition info if not already loaded. */ 892 wdgetdisklabel(wd); 893 } 894 } 895 896 part = WDPART(dev); 897 898 /* Check that the partition exists. */ 899 if (part != RAW_PART && 900 (part >= wd->sc_dk.dk_label->d_npartitions || 901 wd->sc_dk.dk_label->d_partitions[part].p_fstype == FS_UNUSED)) { 902 error = ENXIO; 903 goto bad; 904 } 905 906 /* Insure only one open at a time. */ 907 switch (fmt) { 908 case S_IFCHR: 909 wd->sc_dk.dk_copenmask |= (1 << part); 910 break; 911 case S_IFBLK: 912 wd->sc_dk.dk_bopenmask |= (1 << part); 913 break; 914 } 915 wd->sc_dk.dk_openmask = 916 wd->sc_dk.dk_copenmask | wd->sc_dk.dk_bopenmask; 917 918 lockmgr(&wd->sc_lock, LK_RELEASE, NULL); 919 return 0; 920 921 bad: 922 if (wd->sc_dk.dk_openmask == 0) { 923 } 924 925 bad3: 926 lockmgr(&wd->sc_lock, LK_RELEASE, NULL); 927 bad4: 928 if (wd->sc_dk.dk_openmask == 0) 929 wd->atabus->ata_delref(wd->drvp); 930 return error; 931 } 932 933 int 934 wdclose(dev_t dev, int flag, int fmt, struct proc *p) 935 { 936 struct wd_softc *wd = device_lookup(&wd_cd, WDUNIT(dev)); 937 int part = WDPART(dev); 938 int error; 939 940 WDCDEBUG_PRINT(("wdclose\n"), DEBUG_FUNCS); 941 if ((error = lockmgr(&wd->sc_lock, LK_EXCLUSIVE, NULL)) != 0) 942 return error; 943 944 switch (fmt) { 945 case S_IFCHR: 946 wd->sc_dk.dk_copenmask &= ~(1 << part); 947 break; 948 case S_IFBLK: 949 wd->sc_dk.dk_bopenmask &= ~(1 << part); 950 break; 951 } 952 wd->sc_dk.dk_openmask = 953 wd->sc_dk.dk_copenmask | wd->sc_dk.dk_bopenmask; 954 955 if (wd->sc_dk.dk_openmask == 0) { 956 wd_flushcache(wd, AT_WAIT); 957 /* XXXX Must wait for I/O to complete! */ 958 959 if (! (wd->sc_flags & WDF_KLABEL)) 960 wd->sc_flags &= ~WDF_LOADED; 961 962 wd->atabus->ata_delref(wd->drvp); 963 } 964 965 lockmgr(&wd->sc_lock, LK_RELEASE, NULL); 966 return 0; 967 } 968 969 void 970 wdgetdefaultlabel(struct wd_softc *wd, struct disklabel *lp) 971 { 972 973 WDCDEBUG_PRINT(("wdgetdefaultlabel\n"), DEBUG_FUNCS); 974 memset(lp, 0, sizeof(struct disklabel)); 975 976 lp->d_secsize = DEV_BSIZE; 977 lp->d_ntracks = wd->sc_params.atap_heads; 978 lp->d_nsectors = wd->sc_params.atap_sectors; 979 lp->d_ncylinders = (wd->sc_flags & WDF_LBA) ? wd->sc_capacity / 980 (wd->sc_params.atap_heads * wd->sc_params.atap_sectors) : 981 wd->sc_params.atap_cylinders; 982 lp->d_secpercyl = lp->d_ntracks * lp->d_nsectors; 983 984 if (strcmp(wd->sc_params.atap_model, "ST506") == 0) 985 lp->d_type = DTYPE_ST506; 986 else 987 lp->d_type = DTYPE_ESDI; 988 989 strncpy(lp->d_typename, wd->sc_params.atap_model, 16); 990 strncpy(lp->d_packname, "fictitious", 16); 991 if (wd->sc_capacity > UINT32_MAX) 992 lp->d_secperunit = UINT32_MAX; 993 else 994 lp->d_secperunit = wd->sc_capacity; 995 lp->d_rpm = 3600; 996 lp->d_interleave = 1; 997 lp->d_flags = 0; 998 999 lp->d_partitions[RAW_PART].p_offset = 0; 1000 lp->d_partitions[RAW_PART].p_size = 1001 lp->d_secperunit * (lp->d_secsize / DEV_BSIZE); 1002 lp->d_partitions[RAW_PART].p_fstype = FS_UNUSED; 1003 lp->d_npartitions = RAW_PART + 1; 1004 1005 lp->d_magic = DISKMAGIC; 1006 lp->d_magic2 = DISKMAGIC; 1007 lp->d_checksum = dkcksum(lp); 1008 } 1009 1010 /* 1011 * Fabricate a default disk label, and try to read the correct one. 1012 */ 1013 void 1014 wdgetdisklabel(struct wd_softc *wd) 1015 { 1016 struct disklabel *lp = wd->sc_dk.dk_label; 1017 const char *errstring; 1018 1019 WDCDEBUG_PRINT(("wdgetdisklabel\n"), DEBUG_FUNCS); 1020 1021 memset(wd->sc_dk.dk_cpulabel, 0, sizeof(struct cpu_disklabel)); 1022 1023 wdgetdefaultlabel(wd, lp); 1024 1025 wd->sc_badsect[0] = -1; 1026 1027 if (wd->drvp->state > RESET) 1028 wd->drvp->drive_flags |= DRIVE_RESET; 1029 errstring = readdisklabel(MAKEWDDEV(0, wd->sc_dev.dv_unit, RAW_PART), 1030 wdstrategy, lp, wd->sc_dk.dk_cpulabel); 1031 if (errstring) { 1032 /* 1033 * This probably happened because the drive's default 1034 * geometry doesn't match the DOS geometry. We 1035 * assume the DOS geometry is now in the label and try 1036 * again. XXX This is a kluge. 1037 */ 1038 if (wd->drvp->state > RESET) 1039 wd->drvp->drive_flags |= DRIVE_RESET; 1040 errstring = readdisklabel(MAKEWDDEV(0, wd->sc_dev.dv_unit, 1041 RAW_PART), wdstrategy, lp, wd->sc_dk.dk_cpulabel); 1042 } 1043 if (errstring) { 1044 printf("%s: %s\n", wd->sc_dev.dv_xname, errstring); 1045 return; 1046 } 1047 1048 if (wd->drvp->state > RESET) 1049 wd->drvp->drive_flags |= DRIVE_RESET; 1050 #ifdef HAS_BAD144_HANDLING 1051 if ((lp->d_flags & D_BADSECT) != 0) 1052 bad144intern(wd); 1053 #endif 1054 } 1055 1056 void 1057 wdperror(const struct wd_softc *wd) 1058 { 1059 static const char *const errstr0_3[] = {"address mark not found", 1060 "track 0 not found", "aborted command", "media change requested", 1061 "id not found", "media changed", "uncorrectable data error", 1062 "bad block detected"}; 1063 static const char *const errstr4_5[] = { 1064 "obsolete (address mark not found)", 1065 "no media/write protected", "aborted command", 1066 "media change requested", "id not found", "media changed", 1067 "uncorrectable data error", "interface CRC error"}; 1068 const char *const *errstr; 1069 int i; 1070 char *sep = ""; 1071 1072 const char *devname = wd->sc_dev.dv_xname; 1073 struct ata_drive_datas *drvp = wd->drvp; 1074 int errno = wd->sc_wdc_bio.r_error; 1075 1076 if (drvp->ata_vers >= 4) 1077 errstr = errstr4_5; 1078 else 1079 errstr = errstr0_3; 1080 1081 printf("%s: (", devname); 1082 1083 if (errno == 0) 1084 printf("error not notified"); 1085 1086 for (i = 0; i < 8; i++) { 1087 if (errno & (1 << i)) { 1088 printf("%s%s", sep, errstr[i]); 1089 sep = ", "; 1090 } 1091 } 1092 printf(")\n"); 1093 } 1094 1095 int 1096 wdioctl(dev_t dev, u_long xfer, caddr_t addr, int flag, struct proc *p) 1097 { 1098 struct wd_softc *wd = device_lookup(&wd_cd, WDUNIT(dev)); 1099 int error = 0; 1100 #ifdef __HAVE_OLD_DISKLABEL 1101 struct disklabel *newlabel = NULL; 1102 #endif 1103 1104 WDCDEBUG_PRINT(("wdioctl\n"), DEBUG_FUNCS); 1105 1106 if ((wd->sc_flags & WDF_LOADED) == 0) 1107 return EIO; 1108 1109 switch (xfer) { 1110 #ifdef HAS_BAD144_HANDLING 1111 case DIOCSBAD: 1112 if ((flag & FWRITE) == 0) 1113 return EBADF; 1114 wd->sc_dk.dk_cpulabel->bad = *(struct dkbad *)addr; 1115 wd->sc_dk.dk_label->d_flags |= D_BADSECT; 1116 bad144intern(wd); 1117 return 0; 1118 #endif 1119 1120 case DIOCBSLIST : 1121 { 1122 u_int32_t count, missing, skip; 1123 struct disk_badsecinfo dbsi; 1124 struct disk_badsectors *dbs; 1125 size_t available; 1126 caddr_t laddr; 1127 1128 dbsi = *(struct disk_badsecinfo *)addr; 1129 missing = wd->sc_bscount; 1130 count = 0; 1131 available = dbsi.dbsi_bufsize; 1132 skip = dbsi.dbsi_skip; 1133 laddr = dbsi.dbsi_buffer; 1134 1135 /* 1136 * We start this loop with the expectation that all of the 1137 * entries will be missed and decrement this counter each 1138 * time we either skip over one (already copied out) or 1139 * we actually copy it back to user space. The structs 1140 * holding the bad sector information are copied directly 1141 * back to user space whilst the summary is returned via 1142 * the struct passed in via the ioctl. 1143 */ 1144 SLIST_FOREACH(dbs, &wd->sc_bslist, dbs_next) { 1145 if (skip > 0) { 1146 missing--; 1147 skip--; 1148 continue; 1149 } 1150 if (available < sizeof(*dbs)) 1151 break; 1152 available -= sizeof(*dbs); 1153 copyout(dbs, laddr, sizeof(*dbs)); 1154 laddr += sizeof(*dbs); 1155 missing--; 1156 count++; 1157 } 1158 dbsi.dbsi_left = missing; 1159 dbsi.dbsi_copied = count; 1160 *(struct disk_badsecinfo *)addr = dbsi; 1161 return 0; 1162 } 1163 1164 case DIOCBSFLUSH : 1165 /* Clean out the bad sector list */ 1166 while (!SLIST_EMPTY(&wd->sc_bslist)) { 1167 void *head = SLIST_FIRST(&wd->sc_bslist); 1168 SLIST_REMOVE_HEAD(&wd->sc_bslist, dbs_next); 1169 free(head, M_TEMP); 1170 } 1171 wd->sc_bscount = 0; 1172 return 0; 1173 1174 case DIOCGDINFO: 1175 *(struct disklabel *)addr = *(wd->sc_dk.dk_label); 1176 return 0; 1177 #ifdef __HAVE_OLD_DISKLABEL 1178 case ODIOCGDINFO: 1179 newlabel = malloc(sizeof *newlabel, M_TEMP, M_WAITOK); 1180 if (newlabel == NULL) 1181 return EIO; 1182 *newlabel = *(wd->sc_dk.dk_label); 1183 if (newlabel->d_npartitions <= OLDMAXPARTITIONS) 1184 memcpy(addr, newlabel, sizeof (struct olddisklabel)); 1185 else 1186 error = ENOTTY; 1187 free(newlabel, M_TEMP); 1188 return error; 1189 #endif 1190 1191 case DIOCGPART: 1192 ((struct partinfo *)addr)->disklab = wd->sc_dk.dk_label; 1193 ((struct partinfo *)addr)->part = 1194 &wd->sc_dk.dk_label->d_partitions[WDPART(dev)]; 1195 return 0; 1196 1197 case DIOCWDINFO: 1198 case DIOCSDINFO: 1199 #ifdef __HAVE_OLD_DISKLABEL 1200 case ODIOCWDINFO: 1201 case ODIOCSDINFO: 1202 #endif 1203 { 1204 struct disklabel *lp; 1205 1206 if ((flag & FWRITE) == 0) 1207 return EBADF; 1208 1209 #ifdef __HAVE_OLD_DISKLABEL 1210 if (xfer == ODIOCSDINFO || xfer == ODIOCWDINFO) { 1211 newlabel = malloc(sizeof *newlabel, M_TEMP, M_WAITOK); 1212 if (newlabel == NULL) 1213 return EIO; 1214 memset(newlabel, 0, sizeof newlabel); 1215 memcpy(newlabel, addr, sizeof (struct olddisklabel)); 1216 lp = newlabel; 1217 } else 1218 #endif 1219 lp = (struct disklabel *)addr; 1220 1221 if ((error = lockmgr(&wd->sc_lock, LK_EXCLUSIVE, NULL)) != 0) 1222 goto bad; 1223 wd->sc_flags |= WDF_LABELLING; 1224 1225 error = setdisklabel(wd->sc_dk.dk_label, 1226 lp, /*wd->sc_dk.dk_openmask : */0, 1227 wd->sc_dk.dk_cpulabel); 1228 if (error == 0) { 1229 if (wd->drvp->state > RESET) 1230 wd->drvp->drive_flags |= DRIVE_RESET; 1231 if (xfer == DIOCWDINFO 1232 #ifdef __HAVE_OLD_DISKLABEL 1233 || xfer == ODIOCWDINFO 1234 #endif 1235 ) 1236 error = writedisklabel(WDLABELDEV(dev), 1237 wdstrategy, wd->sc_dk.dk_label, 1238 wd->sc_dk.dk_cpulabel); 1239 } 1240 1241 wd->sc_flags &= ~WDF_LABELLING; 1242 lockmgr(&wd->sc_lock, LK_RELEASE, NULL); 1243 bad: 1244 #ifdef __HAVE_OLD_DISKLABEL 1245 if (newlabel != NULL) 1246 free(newlabel, M_TEMP); 1247 #endif 1248 return error; 1249 } 1250 1251 case DIOCKLABEL: 1252 if (*(int *)addr) 1253 wd->sc_flags |= WDF_KLABEL; 1254 else 1255 wd->sc_flags &= ~WDF_KLABEL; 1256 return 0; 1257 1258 case DIOCWLABEL: 1259 if ((flag & FWRITE) == 0) 1260 return EBADF; 1261 if (*(int *)addr) 1262 wd->sc_flags |= WDF_WLABEL; 1263 else 1264 wd->sc_flags &= ~WDF_WLABEL; 1265 return 0; 1266 1267 case DIOCGDEFLABEL: 1268 wdgetdefaultlabel(wd, (struct disklabel *)addr); 1269 return 0; 1270 #ifdef __HAVE_OLD_DISKLABEL 1271 case ODIOCGDEFLABEL: 1272 newlabel = malloc(sizeof *newlabel, M_TEMP, M_WAITOK); 1273 if (newlabel == NULL) 1274 return EIO; 1275 wdgetdefaultlabel(wd, newlabel); 1276 if (newlabel->d_npartitions <= OLDMAXPARTITIONS) 1277 memcpy(addr, &newlabel, sizeof (struct olddisklabel)); 1278 else 1279 error = ENOTTY; 1280 free(newlabel, M_TEMP); 1281 return error; 1282 #endif 1283 1284 #ifdef notyet 1285 case DIOCWFORMAT: 1286 if ((flag & FWRITE) == 0) 1287 return EBADF; 1288 { 1289 register struct format_op *fop; 1290 struct iovec aiov; 1291 struct uio auio; 1292 1293 fop = (struct format_op *)addr; 1294 aiov.iov_base = fop->df_buf; 1295 aiov.iov_len = fop->df_count; 1296 auio.uio_iov = &aiov; 1297 auio.uio_iovcnt = 1; 1298 auio.uio_resid = fop->df_count; 1299 auio.uio_segflg = 0; 1300 auio.uio_offset = 1301 fop->df_startblk * wd->sc_dk.dk_label->d_secsize; 1302 auio.uio_procp = p; 1303 error = physio(wdformat, NULL, dev, B_WRITE, minphys, 1304 &auio); 1305 fop->df_count -= auio.uio_resid; 1306 fop->df_reg[0] = wdc->sc_status; 1307 fop->df_reg[1] = wdc->sc_error; 1308 return error; 1309 } 1310 #endif 1311 case DIOCGCACHE: 1312 return wd_getcache(wd, (int *)addr); 1313 1314 case DIOCSCACHE: 1315 return wd_setcache(wd, *(int *)addr); 1316 1317 case DIOCCACHESYNC: 1318 return wd_flushcache(wd, AT_WAIT); 1319 1320 case ATAIOCCOMMAND: 1321 /* 1322 * Make sure this command is (relatively) safe first 1323 */ 1324 if ((((atareq_t *) addr)->flags & ATACMD_READ) == 0 && 1325 (flag & FWRITE) == 0) 1326 return (EBADF); 1327 { 1328 struct wd_ioctl *wi; 1329 atareq_t *atareq = (atareq_t *) addr; 1330 int error; 1331 1332 wi = wi_get(); 1333 wi->wi_softc = wd; 1334 wi->wi_atareq = *atareq; 1335 1336 if (atareq->datalen && atareq->flags & 1337 (ATACMD_READ | ATACMD_WRITE)) { 1338 wi->wi_iov.iov_base = atareq->databuf; 1339 wi->wi_iov.iov_len = atareq->datalen; 1340 wi->wi_uio.uio_iov = &wi->wi_iov; 1341 wi->wi_uio.uio_iovcnt = 1; 1342 wi->wi_uio.uio_resid = atareq->datalen; 1343 wi->wi_uio.uio_offset = 0; 1344 wi->wi_uio.uio_segflg = UIO_USERSPACE; 1345 wi->wi_uio.uio_rw = 1346 (atareq->flags & ATACMD_READ) ? B_READ : B_WRITE; 1347 wi->wi_uio.uio_procp = p; 1348 error = physio(wdioctlstrategy, &wi->wi_bp, dev, 1349 (atareq->flags & ATACMD_READ) ? B_READ : B_WRITE, 1350 minphys, &wi->wi_uio); 1351 } else { 1352 /* No need to call physio if we don't have any 1353 user data */ 1354 wi->wi_bp.b_flags = 0; 1355 wi->wi_bp.b_data = 0; 1356 wi->wi_bp.b_bcount = 0; 1357 wi->wi_bp.b_dev = 0; 1358 wi->wi_bp.b_proc = p; 1359 wdioctlstrategy(&wi->wi_bp); 1360 error = wi->wi_bp.b_error; 1361 } 1362 *atareq = wi->wi_atareq; 1363 wi_free(wi); 1364 return(error); 1365 } 1366 1367 default: 1368 return ENOTTY; 1369 } 1370 1371 #ifdef DIAGNOSTIC 1372 panic("wdioctl: impossible"); 1373 #endif 1374 } 1375 1376 #ifdef B_FORMAT 1377 int 1378 wdformat(struct buf *bp) 1379 { 1380 1381 bp->b_flags |= B_FORMAT; 1382 return wdstrategy(bp); 1383 } 1384 #endif 1385 1386 int 1387 wdsize(dev_t dev) 1388 { 1389 struct wd_softc *wd; 1390 int part, omask; 1391 int size; 1392 1393 WDCDEBUG_PRINT(("wdsize\n"), DEBUG_FUNCS); 1394 1395 wd = device_lookup(&wd_cd, WDUNIT(dev)); 1396 if (wd == NULL) 1397 return (-1); 1398 1399 part = WDPART(dev); 1400 omask = wd->sc_dk.dk_openmask & (1 << part); 1401 1402 if (omask == 0 && wdopen(dev, 0, S_IFBLK, NULL) != 0) 1403 return (-1); 1404 if (wd->sc_dk.dk_label->d_partitions[part].p_fstype != FS_SWAP) 1405 size = -1; 1406 else 1407 size = wd->sc_dk.dk_label->d_partitions[part].p_size * 1408 (wd->sc_dk.dk_label->d_secsize / DEV_BSIZE); 1409 if (omask == 0 && wdclose(dev, 0, S_IFBLK, NULL) != 0) 1410 return (-1); 1411 return (size); 1412 } 1413 1414 /* #define WD_DUMP_NOT_TRUSTED if you just want to watch */ 1415 static int wddoingadump = 0; 1416 static int wddumprecalibrated = 0; 1417 static int wddumpmulti = 1; 1418 1419 /* 1420 * Dump core after a system crash. 1421 */ 1422 int 1423 wddump(dev_t dev, daddr_t blkno, caddr_t va, size_t size) 1424 { 1425 struct wd_softc *wd; /* disk unit to do the I/O */ 1426 struct disklabel *lp; /* disk's disklabel */ 1427 int part, err; 1428 int nblks; /* total number of sectors left to write */ 1429 1430 /* Check if recursive dump; if so, punt. */ 1431 if (wddoingadump) 1432 return EFAULT; 1433 wddoingadump = 1; 1434 1435 wd = device_lookup(&wd_cd, WDUNIT(dev)); 1436 if (wd == NULL) 1437 return (ENXIO); 1438 1439 part = WDPART(dev); 1440 1441 /* Convert to disk sectors. Request must be a multiple of size. */ 1442 lp = wd->sc_dk.dk_label; 1443 if ((size % lp->d_secsize) != 0) 1444 return EFAULT; 1445 nblks = size / lp->d_secsize; 1446 blkno = blkno / (lp->d_secsize / DEV_BSIZE); 1447 1448 /* Check transfer bounds against partition size. */ 1449 if ((blkno < 0) || ((blkno + nblks) > lp->d_partitions[part].p_size)) 1450 return EINVAL; 1451 1452 /* Offset block number to start of partition. */ 1453 blkno += lp->d_partitions[part].p_offset; 1454 1455 /* Recalibrate, if first dump transfer. */ 1456 if (wddumprecalibrated == 0) { 1457 wddumpmulti = wd->sc_multi; 1458 wddumprecalibrated = 1; 1459 wd->atabus->ata_reset_channel(wd->drvp, AT_POLL | AT_RST_EMERG); 1460 wd->drvp->state = RESET; 1461 } 1462 1463 while (nblks > 0) { 1464 wd->sc_bp = NULL; 1465 wd->sc_wdc_bio.blkno = blkno; 1466 wd->sc_wdc_bio.flags = ATA_POLL; 1467 if (wd->sc_flags & WDF_LBA48 && blkno > LBA48_THRESHOLD) 1468 wd->sc_wdc_bio.flags |= ATA_LBA48; 1469 if (wd->sc_flags & WDF_LBA) 1470 wd->sc_wdc_bio.flags |= ATA_LBA; 1471 wd->sc_wdc_bio.bcount = 1472 min(nblks, wddumpmulti) * lp->d_secsize; 1473 wd->sc_wdc_bio.databuf = va; 1474 #ifndef WD_DUMP_NOT_TRUSTED 1475 switch (wd->atabus->ata_bio(wd->drvp, &wd->sc_wdc_bio)) { 1476 case WDC_TRY_AGAIN: 1477 panic("wddump: try again"); 1478 break; 1479 case WDC_QUEUED: 1480 panic("wddump: polled command has been queued"); 1481 break; 1482 case WDC_COMPLETE: 1483 break; 1484 } 1485 switch(wd->sc_wdc_bio.error) { 1486 case TIMEOUT: 1487 printf("wddump: device timed out"); 1488 err = EIO; 1489 break; 1490 case ERR_DF: 1491 printf("wddump: drive fault"); 1492 err = EIO; 1493 break; 1494 case ERR_DMA: 1495 printf("wddump: DMA error"); 1496 err = EIO; 1497 break; 1498 case ERROR: 1499 printf("wddump: "); 1500 wdperror(wd); 1501 err = EIO; 1502 break; 1503 case NOERROR: 1504 err = 0; 1505 break; 1506 default: 1507 panic("wddump: unknown error type"); 1508 } 1509 if (err != 0) { 1510 printf("\n"); 1511 return err; 1512 } 1513 #else /* WD_DUMP_NOT_TRUSTED */ 1514 /* Let's just talk about this first... */ 1515 printf("wd%d: dump addr 0x%x, cylin %d, head %d, sector %d\n", 1516 unit, va, cylin, head, sector); 1517 delay(500 * 1000); /* half a second */ 1518 #endif 1519 1520 /* update block count */ 1521 nblks -= min(nblks, wddumpmulti); 1522 blkno += min(nblks, wddumpmulti); 1523 va += min(nblks, wddumpmulti) * lp->d_secsize; 1524 } 1525 1526 wddoingadump = 0; 1527 return 0; 1528 } 1529 1530 #ifdef HAS_BAD144_HANDLING 1531 /* 1532 * Internalize the bad sector table. 1533 */ 1534 void 1535 bad144intern(struct wd_softc *wd) 1536 { 1537 struct dkbad *bt = &wd->sc_dk.dk_cpulabel->bad; 1538 struct disklabel *lp = wd->sc_dk.dk_label; 1539 int i = 0; 1540 1541 WDCDEBUG_PRINT(("bad144intern\n"), DEBUG_XFERS); 1542 1543 for (; i < NBT_BAD; i++) { 1544 if (bt->bt_bad[i].bt_cyl == 0xffff) 1545 break; 1546 wd->sc_badsect[i] = 1547 bt->bt_bad[i].bt_cyl * lp->d_secpercyl + 1548 (bt->bt_bad[i].bt_trksec >> 8) * lp->d_nsectors + 1549 (bt->bt_bad[i].bt_trksec & 0xff); 1550 } 1551 for (; i < NBT_BAD+1; i++) 1552 wd->sc_badsect[i] = -1; 1553 } 1554 #endif 1555 1556 int 1557 wd_get_params(struct wd_softc *wd, u_int8_t flags, struct ataparams *params) 1558 { 1559 switch (wd->atabus->ata_get_params(wd->drvp, flags, params)) { 1560 case CMD_AGAIN: 1561 return 1; 1562 case CMD_ERR: 1563 /* 1564 * We `know' there's a drive here; just assume it's old. 1565 * This geometry is only used to read the MBR and print a 1566 * (false) attach message. 1567 */ 1568 strncpy(params->atap_model, "ST506", 1569 sizeof params->atap_model); 1570 params->atap_config = ATA_CFG_FIXED; 1571 params->atap_cylinders = 1024; 1572 params->atap_heads = 8; 1573 params->atap_sectors = 17; 1574 params->atap_multi = 1; 1575 params->atap_capabilities1 = params->atap_capabilities2 = 0; 1576 wd->drvp->ata_vers = -1; /* Mark it as pre-ATA */ 1577 return 0; 1578 case CMD_OK: 1579 return 0; 1580 default: 1581 panic("wd_get_params: bad return code from ata_get_params"); 1582 /* NOTREACHED */ 1583 } 1584 } 1585 1586 int 1587 wd_getcache(struct wd_softc *wd, int *bitsp) 1588 { 1589 struct ataparams params; 1590 1591 if (wd_get_params(wd, AT_WAIT, ¶ms) != 0) 1592 return EIO; 1593 if (params.atap_cmd_set1 == 0x0000 || 1594 params.atap_cmd_set1 == 0xffff || 1595 (params.atap_cmd_set1 & WDC_CMD1_CACHE) == 0) { 1596 *bitsp = 0; 1597 return 0; 1598 } 1599 *bitsp = DKCACHE_WCHANGE | DKCACHE_READ; 1600 if (params.atap_cmd1_en & WDC_CMD1_CACHE) 1601 *bitsp |= DKCACHE_WRITE; 1602 1603 return 0; 1604 } 1605 1606 int 1607 wd_setcache(struct wd_softc *wd, int bits) 1608 { 1609 struct ataparams params; 1610 struct wdc_command wdc_c; 1611 1612 if (wd_get_params(wd, AT_WAIT, ¶ms) != 0) 1613 return EIO; 1614 1615 if (params.atap_cmd_set1 == 0x0000 || 1616 params.atap_cmd_set1 == 0xffff || 1617 (params.atap_cmd_set1 & WDC_CMD1_CACHE) == 0) 1618 return EOPNOTSUPP; 1619 1620 if ((bits & DKCACHE_READ) == 0 || 1621 (bits & DKCACHE_SAVE) != 0) 1622 return EOPNOTSUPP; 1623 1624 memset(&wdc_c, 0, sizeof(struct wdc_command)); 1625 wdc_c.r_command = SET_FEATURES; 1626 wdc_c.r_st_bmask = 0; 1627 wdc_c.r_st_pmask = 0; 1628 wdc_c.timeout = 30000; /* 30s timeout */ 1629 wdc_c.flags = AT_WAIT; 1630 if (bits & DKCACHE_WRITE) 1631 wdc_c.r_features = WDSF_WRITE_CACHE_EN; 1632 else 1633 wdc_c.r_features = WDSF_WRITE_CACHE_DS; 1634 if (wd->atabus->ata_exec_command(wd->drvp, &wdc_c) != WDC_COMPLETE) { 1635 printf("%s: wd_setcache command not complete\n", 1636 wd->sc_dev.dv_xname); 1637 return EIO; 1638 } 1639 if (wdc_c.flags & (AT_ERROR | AT_TIMEOU | AT_DF)) { 1640 printf("%s: wd_setcache command error 0x%x\n", 1641 wd->sc_dev.dv_xname, wdc_c.flags); 1642 return EIO; 1643 } 1644 if (wdc_c.flags & ERR_NODEV) 1645 return ENODEV; 1646 return 0; 1647 } 1648 1649 int 1650 wd_flushcache(struct wd_softc *wd, int flags) 1651 { 1652 struct wdc_command wdc_c; 1653 1654 if (wd->drvp->ata_vers < 4) /* WDCC_FLUSHCACHE is here since ATA-4 */ 1655 return ENODEV; 1656 memset(&wdc_c, 0, sizeof(struct wdc_command)); 1657 if ((wd->sc_params.atap_cmd2_en & ATA_CMD2_LBA48) != 0 && 1658 (wd->sc_params.atap_cmd2_en & ATA_CMD2_FCE) != 0) 1659 wdc_c.r_command = WDCC_FLUSHCACHE_EXT; 1660 else 1661 wdc_c.r_command = WDCC_FLUSHCACHE; 1662 wdc_c.r_st_bmask = WDCS_DRDY; 1663 wdc_c.r_st_pmask = WDCS_DRDY; 1664 wdc_c.flags = flags; 1665 wdc_c.timeout = 30000; /* 30s timeout */ 1666 if (wd->atabus->ata_exec_command(wd->drvp, &wdc_c) != WDC_COMPLETE) { 1667 printf("%s: flush cache command didn't complete\n", 1668 wd->sc_dev.dv_xname); 1669 return EIO; 1670 } 1671 if (wdc_c.flags & ERR_NODEV) 1672 return ENODEV; 1673 if (wdc_c.flags & AT_TIMEOU) { 1674 printf("%s: flush cache command timeout\n", 1675 wd->sc_dev.dv_xname); 1676 return EIO; 1677 } 1678 if (wdc_c.flags & AT_ERROR) { 1679 if (wdc_c.r_error == WDCE_ABRT) /* command not supported */ 1680 return ENODEV; 1681 printf("%s: flush cache command: error 0x%x\n", 1682 wd->sc_dev.dv_xname, wdc_c.r_error); 1683 return EIO; 1684 } 1685 if (wdc_c.flags & AT_DF) { 1686 printf("%s: flush cache command: drive fault\n", 1687 wd->sc_dev.dv_xname); 1688 return EIO; 1689 } 1690 return 0; 1691 } 1692 1693 void 1694 wd_shutdown(void *arg) 1695 { 1696 struct wd_softc *wd = arg; 1697 wd_flushcache(wd, AT_POLL); 1698 } 1699 1700 /* 1701 * Allocate space for a ioctl queue structure. Mostly taken from 1702 * scsipi_ioctl.c 1703 */ 1704 struct wd_ioctl * 1705 wi_get(void) 1706 { 1707 struct wd_ioctl *wi; 1708 int s; 1709 1710 wi = malloc(sizeof(struct wd_ioctl), M_TEMP, M_WAITOK|M_ZERO); 1711 simple_lock_init(&wi->wi_bp.b_interlock); 1712 s = splbio(); 1713 LIST_INSERT_HEAD(&wi_head, wi, wi_list); 1714 splx(s); 1715 return (wi); 1716 } 1717 1718 /* 1719 * Free an ioctl structure and remove it from our list 1720 */ 1721 1722 void 1723 wi_free(struct wd_ioctl *wi) 1724 { 1725 int s; 1726 1727 s = splbio(); 1728 LIST_REMOVE(wi, wi_list); 1729 splx(s); 1730 free(wi, M_TEMP); 1731 } 1732 1733 /* 1734 * Find a wd_ioctl structure based on the struct buf. 1735 */ 1736 1737 struct wd_ioctl * 1738 wi_find(struct buf *bp) 1739 { 1740 struct wd_ioctl *wi; 1741 int s; 1742 1743 s = splbio(); 1744 for (wi = wi_head.lh_first; wi != 0; wi = wi->wi_list.le_next) 1745 if (bp == &wi->wi_bp) 1746 break; 1747 splx(s); 1748 return (wi); 1749 } 1750 1751 /* 1752 * Ioctl pseudo strategy routine 1753 * 1754 * This is mostly stolen from scsipi_ioctl.c:scsistrategy(). What 1755 * happens here is: 1756 * 1757 * - wdioctl() queues a wd_ioctl structure. 1758 * 1759 * - wdioctl() calls physio/wdioctlstrategy based on whether or not 1760 * user space I/O is required. If physio() is called, physio() eventually 1761 * calls wdioctlstrategy(). 1762 * 1763 * - In either case, wdioctlstrategy() calls wd->atabus->ata_exec_command() 1764 * to perform the actual command 1765 * 1766 * The reason for the use of the pseudo strategy routine is because 1767 * when doing I/O to/from user space, physio _really_ wants to be in 1768 * the loop. We could put the entire buffer into the ioctl request 1769 * structure, but that won't scale if we want to do things like download 1770 * microcode. 1771 */ 1772 1773 void 1774 wdioctlstrategy(struct buf *bp) 1775 { 1776 struct wd_ioctl *wi; 1777 struct wdc_command wdc_c; 1778 int error = 0; 1779 1780 wi = wi_find(bp); 1781 if (wi == NULL) { 1782 printf("user_strat: No ioctl\n"); 1783 error = EINVAL; 1784 goto bad; 1785 } 1786 1787 memset(&wdc_c, 0, sizeof(wdc_c)); 1788 1789 /* 1790 * Abort if physio broke up the transfer 1791 */ 1792 1793 if (bp->b_bcount != wi->wi_atareq.datalen) { 1794 printf("physio split wd ioctl request... cannot proceed\n"); 1795 error = EIO; 1796 goto bad; 1797 } 1798 1799 /* 1800 * Abort if we didn't get a buffer size that was a multiple of 1801 * our sector size (or was larger than NBBY) 1802 */ 1803 1804 if ((bp->b_bcount % wi->wi_softc->sc_dk.dk_label->d_secsize) != 0 || 1805 (bp->b_bcount / wi->wi_softc->sc_dk.dk_label->d_secsize) >= 1806 (1 << NBBY)) { 1807 error = EINVAL; 1808 goto bad; 1809 } 1810 1811 /* 1812 * Make sure a timeout was supplied in the ioctl request 1813 */ 1814 1815 if (wi->wi_atareq.timeout == 0) { 1816 error = EINVAL; 1817 goto bad; 1818 } 1819 1820 if (wi->wi_atareq.flags & ATACMD_READ) 1821 wdc_c.flags |= AT_READ; 1822 else if (wi->wi_atareq.flags & ATACMD_WRITE) 1823 wdc_c.flags |= AT_WRITE; 1824 1825 if (wi->wi_atareq.flags & ATACMD_READREG) 1826 wdc_c.flags |= AT_READREG; 1827 1828 wdc_c.flags |= AT_WAIT; 1829 1830 wdc_c.timeout = wi->wi_atareq.timeout; 1831 wdc_c.r_command = wi->wi_atareq.command; 1832 wdc_c.r_head = wi->wi_atareq.head & 0x0f; 1833 wdc_c.r_cyl = wi->wi_atareq.cylinder; 1834 wdc_c.r_sector = wi->wi_atareq.sec_num; 1835 wdc_c.r_count = wi->wi_atareq.sec_count; 1836 wdc_c.r_features = wi->wi_atareq.features; 1837 wdc_c.r_st_bmask = WDCS_DRDY; 1838 wdc_c.r_st_pmask = WDCS_DRDY; 1839 wdc_c.data = wi->wi_bp.b_data; 1840 wdc_c.bcount = wi->wi_bp.b_bcount; 1841 1842 if (wi->wi_softc->atabus->ata_exec_command(wi->wi_softc->drvp, &wdc_c) 1843 != WDC_COMPLETE) { 1844 wi->wi_atareq.retsts = ATACMD_ERROR; 1845 goto bad; 1846 } 1847 1848 if (wdc_c.flags & (AT_ERROR | AT_TIMEOU | AT_DF)) { 1849 if (wdc_c.flags & AT_ERROR) { 1850 wi->wi_atareq.retsts = ATACMD_ERROR; 1851 wi->wi_atareq.error = wdc_c.r_error; 1852 } else if (wdc_c.flags & AT_DF) 1853 wi->wi_atareq.retsts = ATACMD_DF; 1854 else 1855 wi->wi_atareq.retsts = ATACMD_TIMEOUT; 1856 } else { 1857 wi->wi_atareq.retsts = ATACMD_OK; 1858 if (wi->wi_atareq.flags & ATACMD_READREG) { 1859 wi->wi_atareq.head = wdc_c.r_head ; 1860 wi->wi_atareq.cylinder = wdc_c.r_cyl; 1861 wi->wi_atareq.sec_num = wdc_c.r_sector; 1862 wi->wi_atareq.sec_count = wdc_c.r_count; 1863 wi->wi_atareq.features = wdc_c.r_features; 1864 wi->wi_atareq.error = wdc_c.r_error; 1865 } 1866 } 1867 1868 bp->b_error = 0; 1869 biodone(bp); 1870 return; 1871 bad: 1872 bp->b_flags |= B_ERROR; 1873 bp->b_error = error; 1874 biodone(bp); 1875 } 1876
Indexes created Mon Sep 29 21:09:56 GMT 2025