wd.c revision 1.264
1 /* $NetBSD: wd.c,v 1.264 2003/10/27 23:06:15 fredb 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 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 1.264 2003/10/27 23:06:15 fredb Exp $"); 70 71 #ifndef WDCDEBUG 72 #define WDCDEBUG 73 #endif /* WDCDEBUG */ 74 75 #include "opt_bufq.h" 76 #include "rnd.h" 77 78 #include <sys/param.h> 79 #include <sys/systm.h> 80 #include <sys/kernel.h> 81 #include <sys/conf.h> 82 #include <sys/file.h> 83 #include <sys/stat.h> 84 #include <sys/ioctl.h> 85 #include <sys/buf.h> 86 #include <sys/uio.h> 87 #include <sys/malloc.h> 88 #include <sys/device.h> 89 #include <sys/disklabel.h> 90 #include <sys/disk.h> 91 #include <sys/syslog.h> 92 #include <sys/proc.h> 93 #include <sys/vnode.h> 94 #if NRND > 0 95 #include <sys/rnd.h> 96 #endif 97 98 #include <machine/intr.h> 99 #include <machine/bus.h> 100 101 #define __ATA_DISK_PRIVATE 102 103 #include <dev/ata/atareg.h> 104 #include <dev/ata/atavar.h> 105 #include <dev/ata/wdvar.h> 106 #include <dev/ic/wdcreg.h> 107 #include <sys/ataio.h> 108 #include "locators.h" 109 110 #define LBA48_THRESHOLD (0xfffffff) /* 128GB / DEV_BSIZE */ 111 112 #define WDIORETRIES_SINGLE 4 /* number of retries before single-sector */ 113 #define WDIORETRIES 5 /* number of retries before giving up */ 114 #define RECOVERYTIME hz/2 /* time to wait before retrying a cmd */ 115 116 #define WDUNIT(dev) DISKUNIT(dev) 117 #define WDPART(dev) DISKPART(dev) 118 #define WDMINOR(unit, part) DISKMINOR(unit, part) 119 #define MAKEWDDEV(maj, unit, part) MAKEDISKDEV(maj, unit, part) 120 121 #define WDLABELDEV(dev) (MAKEWDDEV(major(dev), WDUNIT(dev), RAW_PART)) 122 123 #define DEBUG_INTR 0x01 124 #define DEBUG_XFERS 0x02 125 #define DEBUG_STATUS 0x04 126 #define DEBUG_FUNCS 0x08 127 #define DEBUG_PROBE 0x10 128 #ifdef WDCDEBUG 129 int wdcdebug_wd_mask = 0x0; 130 #define WDCDEBUG_PRINT(args, level) \ 131 if (wdcdebug_wd_mask & (level)) \ 132 printf args 133 #else 134 #define WDCDEBUG_PRINT(args, level) 135 #endif 136 137 int wdprobe(struct device *, struct cfdata *, void *); 138 void wdattach(struct device *, struct device *, void *); 139 int wddetach(struct device *, int); 140 int wdactivate(struct device *, enum devact); 141 int wdprint(void *, char *); 142 void wdperror(const struct wd_softc *); 143 144 CFATTACH_DECL(wd, sizeof(struct wd_softc), 145 wdprobe, wdattach, wddetach, wdactivate); 146 147 extern struct cfdriver wd_cd; 148 149 dev_type_open(wdopen); 150 dev_type_close(wdclose); 151 dev_type_read(wdread); 152 dev_type_write(wdwrite); 153 dev_type_ioctl(wdioctl); 154 dev_type_strategy(wdstrategy); 155 dev_type_dump(wddump); 156 dev_type_size(wdsize); 157 158 const struct bdevsw wd_bdevsw = { 159 wdopen, wdclose, wdstrategy, wdioctl, wddump, wdsize, D_DISK 160 }; 161 162 const struct cdevsw wd_cdevsw = { 163 wdopen, wdclose, wdread, wdwrite, wdioctl, 164 nostop, notty, nopoll, nommap, nokqfilter, D_DISK 165 }; 166 167 /* 168 * Glue necessary to hook WDCIOCCOMMAND into physio 169 */ 170 171 struct wd_ioctl { 172 LIST_ENTRY(wd_ioctl) wi_list; 173 struct buf wi_bp; 174 struct uio wi_uio; 175 struct iovec wi_iov; 176 atareq_t wi_atareq; 177 struct wd_softc *wi_softc; 178 }; 179 180 LIST_HEAD(, wd_ioctl) wi_head; 181 182 struct wd_ioctl *wi_find(struct buf *); 183 void wi_free(struct wd_ioctl *); 184 struct wd_ioctl *wi_get(void); 185 void wdioctlstrategy(struct buf *); 186 187 void wdgetdefaultlabel(struct wd_softc *, struct disklabel *); 188 void wdgetdisklabel(struct wd_softc *); 189 void wdstart(void *); 190 void __wdstart(struct wd_softc*, struct buf *); 191 void wdrestart(void *); 192 int wd_get_params(struct wd_softc *, u_int8_t, struct ataparams *); 193 void wd_flushcache(struct wd_softc *, int); 194 void wd_shutdown(void *); 195 196 int wd_getcache(struct wd_softc *, int *); 197 int wd_setcache(struct wd_softc *, int); 198 199 struct dkdriver wddkdriver = { wdstrategy }; 200 201 #ifdef HAS_BAD144_HANDLING 202 static void bad144intern(struct wd_softc *); 203 #endif 204 int wdlock(struct wd_softc *); 205 void wdunlock(struct wd_softc *); 206 207 #define WD_QUIRK_SPLIT_MOD15_WRITE 0x0001 /* must split certain writes */ 208 209 /* 210 * Quirk table for IDE drives. Put more-specific matches first, since 211 * a simple globbing routine is used for matching. 212 */ 213 static const struct wd_quirk { 214 const char *wdq_match; /* inquiry pattern to match */ 215 int wdq_quirks; /* drive quirks */ 216 } wd_quirk_table[] = { 217 /* 218 * Some Seagate S-ATA drives have a PHY which can get confused 219 * with the way data is packetized by some S-ATA controllers. 220 * 221 * The work-around is to split in two any write transfer whose 222 * sector count % 15 == 1 (assuming 512 byte sectors). 223 * 224 * XXX This is an incomplete list. There are at least a couple 225 * XXX more model numbers. If you have trouble with such transfers 226 * XXX (8K is the most common) on Seagate S-ATA drives, please 227 * XXX notify thorpej (at) netbsd.org. 228 */ 229 { "ST3120023AS", 230 WD_QUIRK_SPLIT_MOD15_WRITE }, 231 { "ST380023AS", 232 WD_QUIRK_SPLIT_MOD15_WRITE }, 233 234 { NULL, 235 0 } 236 }; 237 238 static const struct wd_quirk * 239 wd_lookup_quirks(const char *name) 240 { 241 const struct wd_quirk *wdq; 242 const char *estr; 243 244 for (wdq = wd_quirk_table; wdq->wdq_match != NULL; wdq++) { 245 /* 246 * We only want exact matches (which include matches 247 * against globbing characters). 248 */ 249 if (pmatch(name, wdq->wdq_match, &estr) == 2) 250 return (wdq); 251 } 252 return (NULL); 253 } 254 255 int 256 wdprobe(struct device *parent, struct cfdata *match, void *aux) 257 { 258 struct ata_device *adev = aux; 259 260 if (adev == NULL) 261 return 0; 262 if (adev->adev_bustype->bustype_type != SCSIPI_BUSTYPE_ATA) 263 return 0; 264 265 if (match->cf_loc[ATA_HLCF_DRIVE] != ATA_HLCF_DRIVE_DEFAULT && 266 match->cf_loc[ATA_HLCF_DRIVE] != adev->adev_drv_data->drive) 267 return 0; 268 return 1; 269 } 270 271 void 272 wdattach(struct device *parent, struct device *self, void *aux) 273 { 274 struct wd_softc *wd = (void *)self; 275 struct ata_device *adev= aux; 276 int i, blank; 277 char buf[41], pbuf[9], c, *p, *q; 278 const struct wd_quirk *wdq; 279 WDCDEBUG_PRINT(("wdattach\n"), DEBUG_FUNCS | DEBUG_PROBE); 280 281 callout_init(&wd->sc_restart_ch); 282 #ifdef NEW_BUFQ_STRATEGY 283 bufq_alloc(&wd->sc_q, BUFQ_READ_PRIO|BUFQ_SORT_RAWBLOCK); 284 #else 285 bufq_alloc(&wd->sc_q, BUFQ_DISKSORT|BUFQ_SORT_RAWBLOCK); 286 #endif 287 SLIST_INIT(&wd->sc_bslist); 288 289 wd->atabus = adev->adev_bustype; 290 wd->openings = adev->adev_openings; 291 wd->drvp = adev->adev_drv_data; 292 /* give back our softc to our caller */ 293 wd->drvp->drv_softc = &wd->sc_dev; 294 295 aprint_naive("\n"); 296 297 /* read our drive info */ 298 if (wd_get_params(wd, AT_WAIT, &wd->sc_params) != 0) { 299 aprint_error("\n%s: IDENTIFY failed\n", wd->sc_dev.dv_xname); 300 return; 301 } 302 303 for (blank = 0, p = wd->sc_params.atap_model, q = buf, i = 0; 304 i < sizeof(wd->sc_params.atap_model); i++) { 305 c = *p++; 306 if (c == '\0') 307 break; 308 if (c != ' ') { 309 if (blank) { 310 *q++ = ' '; 311 blank = 0; 312 } 313 *q++ = c; 314 } else 315 blank = 1; 316 } 317 *q++ = '\0'; 318 319 aprint_normal(": <%s>\n", buf); 320 321 wdq = wd_lookup_quirks(buf); 322 if (wdq != NULL) 323 wd->sc_quirks = wdq->wdq_quirks; 324 325 if ((wd->sc_params.atap_multi & 0xff) > 1) { 326 wd->sc_multi = wd->sc_params.atap_multi & 0xff; 327 } else { 328 wd->sc_multi = 1; 329 } 330 331 aprint_normal("%s: drive supports %d-sector PIO transfers,", 332 wd->sc_dev.dv_xname, wd->sc_multi); 333 334 /* 48-bit LBA addressing */ 335 if ((wd->sc_params.atap_cmd2_en & WDC_CAP_LBA48) != 0) 336 wd->sc_flags |= WDF_LBA48; 337 338 /* Prior to ATA-4, LBA was optional. */ 339 if ((wd->sc_params.atap_capabilities1 & WDC_CAP_LBA) != 0) 340 wd->sc_flags |= WDF_LBA; 341 #if 0 342 /* ATA-4 requires LBA. */ 343 if (wd->sc_params.atap_ataversion != 0xffff && 344 wd->sc_params.atap_ataversion >= WDC_VER_ATA4) 345 wd->sc_flags |= WDF_LBA; 346 #endif 347 348 if ((wd->sc_flags & WDF_LBA48) != 0) { 349 aprint_normal(" LBA48 addressing\n"); 350 wd->sc_capacity = 351 ((u_int64_t) wd->sc_params.__reserved6[11] << 48) | 352 ((u_int64_t) wd->sc_params.__reserved6[10] << 32) | 353 ((u_int64_t) wd->sc_params.__reserved6[9] << 16) | 354 ((u_int64_t) wd->sc_params.__reserved6[8] << 0); 355 } else if ((wd->sc_flags & WDF_LBA) != 0) { 356 aprint_normal(" LBA addressing\n"); 357 wd->sc_capacity = 358 (wd->sc_params.atap_capacity[1] << 16) | 359 wd->sc_params.atap_capacity[0]; 360 } else { 361 aprint_normal(" chs addressing\n"); 362 wd->sc_capacity = 363 wd->sc_params.atap_cylinders * 364 wd->sc_params.atap_heads * 365 wd->sc_params.atap_sectors; 366 } 367 format_bytes(pbuf, sizeof(pbuf), wd->sc_capacity * DEV_BSIZE); 368 aprint_normal("%s: %s, %d cyl, %d head, %d sec, " 369 "%d bytes/sect x %llu sectors\n", 370 self->dv_xname, pbuf, 371 (wd->sc_flags & WDF_LBA) ? (int)(wd->sc_capacity / 372 (wd->sc_params.atap_heads * wd->sc_params.atap_sectors)) : 373 wd->sc_params.atap_cylinders, 374 wd->sc_params.atap_heads, wd->sc_params.atap_sectors, 375 DEV_BSIZE, (unsigned long long)wd->sc_capacity); 376 377 WDCDEBUG_PRINT(("%s: atap_dmatiming_mimi=%d, atap_dmatiming_recom=%d\n", 378 self->dv_xname, wd->sc_params.atap_dmatiming_mimi, 379 wd->sc_params.atap_dmatiming_recom), DEBUG_PROBE); 380 /* 381 * Initialize and attach the disk structure. 382 */ 383 wd->sc_dk.dk_driver = &wddkdriver; 384 wd->sc_dk.dk_name = wd->sc_dev.dv_xname; 385 disk_attach(&wd->sc_dk); 386 wd->sc_wdc_bio.lp = wd->sc_dk.dk_label; 387 wd->sc_sdhook = shutdownhook_establish(wd_shutdown, wd); 388 if (wd->sc_sdhook == NULL) 389 aprint_error("%s: WARNING: unable to establish shutdown hook\n", 390 wd->sc_dev.dv_xname); 391 #if NRND > 0 392 rnd_attach_source(&wd->rnd_source, wd->sc_dev.dv_xname, 393 RND_TYPE_DISK, 0); 394 #endif 395 } 396 397 int 398 wdactivate(struct device *self, enum devact act) 399 { 400 int rv = 0; 401 402 switch (act) { 403 case DVACT_ACTIVATE: 404 rv = EOPNOTSUPP; 405 break; 406 407 case DVACT_DEACTIVATE: 408 /* 409 * Nothing to do; we key off the device's DVF_ACTIVATE. 410 */ 411 break; 412 } 413 return (rv); 414 } 415 416 int 417 wddetach(struct device *self, int flags) 418 { 419 struct wd_softc *sc = (struct wd_softc *)self; 420 struct buf *bp; 421 int s, bmaj, cmaj, i, mn; 422 423 /* Clean out the bad sector list */ 424 while (!SLIST_EMPTY(&sc->sc_bslist)) { 425 void *head = SLIST_FIRST(&sc->sc_bslist); 426 SLIST_REMOVE_HEAD(&sc->sc_bslist, dbs_next); 427 free(head, M_TEMP); 428 } 429 sc->sc_bscount = 0; 430 431 /* locate the major number */ 432 bmaj = bdevsw_lookup_major(&wd_bdevsw); 433 cmaj = cdevsw_lookup_major(&wd_cdevsw); 434 435 s = splbio(); 436 437 /* Kill off any queued buffers. */ 438 while ((bp = BUFQ_GET(&sc->sc_q)) != NULL) { 439 bp->b_error = EIO; 440 bp->b_flags |= B_ERROR; 441 bp->b_resid = bp->b_bcount; 442 biodone(bp); 443 } 444 445 bufq_free(&sc->sc_q); 446 447 splx(s); 448 449 /* Nuke the vnodes for any open instances. */ 450 for (i = 0; i < MAXPARTITIONS; i++) { 451 mn = WDMINOR(self->dv_unit, i); 452 vdevgone(bmaj, mn, mn, VBLK); 453 vdevgone(cmaj, mn, mn, VCHR); 454 } 455 456 /* Detach disk. */ 457 disk_detach(&sc->sc_dk); 458 459 /* Get rid of the shutdown hook. */ 460 if (sc->sc_sdhook != NULL) 461 shutdownhook_disestablish(sc->sc_sdhook); 462 463 #if NRND > 0 464 /* Unhook the entropy source. */ 465 rnd_detach_source(&sc->rnd_source); 466 #endif 467 468 return (0); 469 } 470 471 /* 472 * Read/write routine for a buffer. Validates the arguments and schedules the 473 * transfer. Does not wait for the transfer to complete. 474 */ 475 void 476 wdstrategy(struct buf *bp) 477 { 478 struct wd_softc *wd = device_lookup(&wd_cd, WDUNIT(bp->b_dev)); 479 struct disklabel *lp = wd->sc_dk.dk_label; 480 daddr_t blkno; 481 int s; 482 483 blkno = 0; /* XXX to appease gcc3 */ 484 485 WDCDEBUG_PRINT(("wdstrategy (%s)\n", wd->sc_dev.dv_xname), 486 DEBUG_XFERS); 487 488 /* Valid request? */ 489 if (bp->b_blkno < 0 || 490 (bp->b_bcount % lp->d_secsize) != 0 || 491 (bp->b_bcount / lp->d_secsize) >= (1 << NBBY)) { 492 bp->b_error = EINVAL; 493 goto bad; 494 } 495 496 /* If device invalidated (e.g. media change, door open), error. */ 497 if ((wd->sc_flags & WDF_LOADED) == 0) { 498 bp->b_error = EIO; 499 goto bad; 500 } 501 502 /* If it's a null transfer, return immediately. */ 503 if (bp->b_bcount == 0) 504 goto done; 505 506 /* 507 * Do bounds checking, adjust transfer. if error, process. 508 * If end of partition, just return. 509 */ 510 if (WDPART(bp->b_dev) == RAW_PART) { 511 if (bounds_check_with_mediasize(bp, DEV_BSIZE, 512 wd->sc_capacity) <= 0) 513 goto done; 514 } else { 515 if (bounds_check_with_label(&wd->sc_dk, bp, 516 (wd->sc_flags & (WDF_WLABEL|WDF_LABELLING)) != 0) <= 0) 517 goto done; 518 } 519 520 /* 521 * Now convert the block number to absolute and put it in 522 * terms of the device's logical block size. 523 */ 524 if (lp->d_secsize >= DEV_BSIZE) 525 blkno = bp->b_blkno / (lp->d_secsize / DEV_BSIZE); 526 else 527 blkno = bp->b_blkno * (DEV_BSIZE / lp->d_secsize); 528 529 if (WDPART(bp->b_dev) != RAW_PART) 530 blkno += lp->d_partitions[WDPART(bp->b_dev)].p_offset; 531 532 bp->b_rawblkno = blkno; 533 534 /* 535 * If the transfer about to be attempted contains only a block that 536 * is known to be bad then return an error for the transfer without 537 * even attempting to start a transfer up under the premis that we 538 * will just end up doing more retries for a transfer that will end 539 * up failing again. 540 * XXX:SMP - mutex required to protect with DIOCBSFLUSH 541 */ 542 if (__predict_false(!SLIST_EMPTY(&wd->sc_bslist))) { 543 struct disk_badsectors *dbs; 544 daddr_t maxblk = blkno + (bp->b_bcount / DEV_BSIZE) - 1; 545 546 SLIST_FOREACH(dbs, &wd->sc_bslist, dbs_next) 547 if ((dbs->dbs_min <= blkno && blkno <= dbs->dbs_max) || 548 (dbs->dbs_min <= maxblk && maxblk <= dbs->dbs_max)){ 549 bp->b_error = EIO; 550 goto bad; 551 } 552 } 553 554 /* Queue transfer on drive, activate drive and controller if idle. */ 555 s = splbio(); 556 BUFQ_PUT(&wd->sc_q, bp); 557 wdstart(wd); 558 splx(s); 559 return; 560 bad: 561 bp->b_flags |= B_ERROR; 562 done: 563 /* Toss transfer; we're done early. */ 564 bp->b_resid = bp->b_bcount; 565 biodone(bp); 566 } 567 568 /* 569 * Queue a drive for I/O. 570 */ 571 void 572 wdstart(void *arg) 573 { 574 struct wd_softc *wd = arg; 575 struct buf *bp = NULL; 576 577 WDCDEBUG_PRINT(("wdstart %s\n", wd->sc_dev.dv_xname), 578 DEBUG_XFERS); 579 while (wd->openings > 0) { 580 581 /* Is there a buf for us ? */ 582 if ((bp = BUFQ_GET(&wd->sc_q)) == NULL) 583 return; 584 585 /* 586 * Make the command. First lock the device 587 */ 588 wd->openings--; 589 590 wd->retries = 0; 591 __wdstart(wd, bp); 592 } 593 } 594 595 static void 596 wd_split_mod15_write(struct buf *bp) 597 { 598 struct buf *obp = bp->b_private; 599 struct wd_softc *sc = wd_cd.cd_devs[DISKUNIT(obp->b_dev)]; 600 601 if (__predict_false(bp->b_flags & B_ERROR) != 0) { 602 /* 603 * Propagate the error. If this was the first half of 604 * the original transfer, make sure to account for that 605 * in the residual. 606 */ 607 if (bp->b_data == obp->b_data) 608 bp->b_resid += bp->b_bcount; 609 goto done; 610 } 611 612 /* 613 * If this was the second half of the transfer, we're all done! 614 */ 615 if (bp->b_data != obp->b_data) 616 goto done; 617 618 /* 619 * Advance the pointer to the second half and issue that command 620 * using the same opening. 621 */ 622 bp->b_flags = obp->b_flags | B_CALL; 623 bp->b_data += bp->b_bcount; 624 bp->b_blkno += (bp->b_bcount / 512); 625 bp->b_rawblkno += (bp->b_bcount / 512); 626 __wdstart(sc, bp); 627 return; 628 629 done: 630 obp->b_flags |= (bp->b_flags & (B_EINTR|B_ERROR)); 631 obp->b_error = bp->b_error; 632 obp->b_resid = bp->b_resid; 633 pool_put(&bufpool, bp); 634 biodone(obp); 635 sc->openings++; 636 /* wddone() will call wdstart() */ 637 } 638 639 void 640 __wdstart(struct wd_softc *wd, struct buf *bp) 641 { 642 643 /* 644 * Deal with the "split mod15 write" quirk. We just divide the 645 * transfer in two, doing the first half and then then second half 646 * with the same command opening. 647 * 648 * Note we MUST do this here, because we can't let insertion 649 * into the bufq cause the transfers to be re-merged. 650 */ 651 if (__predict_false((wd->sc_quirks & WD_QUIRK_SPLIT_MOD15_WRITE) != 0 && 652 (bp->b_flags & B_READ) == 0 && 653 bp->b_bcount > 512 && 654 ((bp->b_bcount / 512) % 15) == 1)) { 655 struct buf *nbp; 656 657 /* already at splbio */ 658 nbp = pool_get(&bufpool, PR_NOWAIT); 659 if (__predict_false(nbp == NULL)) { 660 /* No memory -- fail the iop. */ 661 bp->b_error = ENOMEM; 662 bp->b_flags |= B_ERROR; 663 bp->b_resid = bp->b_bcount; 664 biodone(bp); 665 wd->openings++; 666 return; 667 } 668 669 BUF_INIT(nbp); 670 nbp->b_error = 0; 671 nbp->b_proc = bp->b_proc; 672 nbp->b_vp = NULLVP; 673 nbp->b_dev = bp->b_dev; 674 675 nbp->b_bcount = bp->b_bcount / 2; 676 nbp->b_bufsize = bp->b_bcount / 2; 677 nbp->b_data = bp->b_data; 678 679 nbp->b_blkno = bp->b_blkno; 680 nbp->b_rawblkno = bp->b_rawblkno; 681 682 nbp->b_flags = bp->b_flags | B_CALL; 683 nbp->b_iodone = wd_split_mod15_write; 684 685 /* Put ptr to orig buf in b_private and use new buf */ 686 nbp->b_private = bp; 687 bp = nbp; 688 } 689 690 wd->sc_wdc_bio.blkno = bp->b_rawblkno; 691 wd->sc_wdc_bio.blkdone =0; 692 wd->sc_bp = bp; 693 /* 694 * If we're retrying, retry in single-sector mode. This will give us 695 * the sector number of the problem, and will eventually allow the 696 * transfer to succeed. 697 */ 698 if (wd->sc_multi == 1 || wd->retries >= WDIORETRIES_SINGLE) 699 wd->sc_wdc_bio.flags = ATA_SINGLE; 700 else 701 wd->sc_wdc_bio.flags = 0; 702 if (wd->sc_flags & WDF_LBA48 && wd->sc_wdc_bio.blkno > LBA48_THRESHOLD) 703 wd->sc_wdc_bio.flags |= ATA_LBA48; 704 if (wd->sc_flags & WDF_LBA) 705 wd->sc_wdc_bio.flags |= ATA_LBA; 706 if (bp->b_flags & B_READ) 707 wd->sc_wdc_bio.flags |= ATA_READ; 708 wd->sc_wdc_bio.bcount = bp->b_bcount; 709 wd->sc_wdc_bio.databuf = bp->b_data; 710 /* Instrumentation. */ 711 disk_busy(&wd->sc_dk); 712 switch (wd->atabus->ata_bio(wd->drvp, &wd->sc_wdc_bio)) { 713 case WDC_TRY_AGAIN: 714 callout_reset(&wd->sc_restart_ch, hz, wdrestart, wd); 715 break; 716 case WDC_QUEUED: 717 case WDC_COMPLETE: 718 break; 719 default: 720 panic("__wdstart: bad return code from ata_bio()"); 721 } 722 } 723 724 void 725 wddone(void *v) 726 { 727 struct wd_softc *wd = v; 728 struct buf *bp = wd->sc_bp; 729 const char *errmsg; 730 int do_perror = 0; 731 WDCDEBUG_PRINT(("wddone %s\n", wd->sc_dev.dv_xname), 732 DEBUG_XFERS); 733 734 if (bp == NULL) 735 return; 736 bp->b_resid = wd->sc_wdc_bio.bcount; 737 switch (wd->sc_wdc_bio.error) { 738 case ERR_DMA: 739 errmsg = "DMA error"; 740 goto retry; 741 case ERR_DF: 742 errmsg = "device fault"; 743 goto retry; 744 case TIMEOUT: 745 errmsg = "device timeout"; 746 goto retry; 747 case ERROR: 748 /* Don't care about media change bits */ 749 if (wd->sc_wdc_bio.r_error != 0 && 750 (wd->sc_wdc_bio.r_error & ~(WDCE_MC | WDCE_MCR)) == 0) 751 goto noerror; 752 errmsg = "error"; 753 do_perror = 1; 754 retry: /* Just reset and retry. Can we do more ? */ 755 wd->atabus->ata_reset_channel(wd->drvp, 0); 756 diskerr(bp, "wd", errmsg, LOG_PRINTF, 757 wd->sc_wdc_bio.blkdone, wd->sc_dk.dk_label); 758 if (wd->retries < WDIORETRIES) 759 printf(", retrying\n"); 760 if (do_perror) 761 wdperror(wd); 762 if (wd->retries < WDIORETRIES) { 763 wd->retries++; 764 callout_reset(&wd->sc_restart_ch, RECOVERYTIME, 765 wdrestart, wd); 766 return; 767 } 768 printf("\n"); 769 770 /* 771 * Not all errors indicate a failed block but those that do, 772 * put the block on the bad-block list for the device. Only 773 * do this for reads because the drive should do it for writes, 774 * itself, according to Manuel. 775 */ 776 if ((bp->b_flags & B_READ) && 777 ((wd->drvp->ata_vers >= 4 && wd->sc_wdc_bio.r_error & 64) || 778 (wd->drvp->ata_vers < 4 && wd->sc_wdc_bio.r_error & 192))) { 779 struct disk_badsectors *dbs; 780 781 dbs = malloc(sizeof *dbs, M_TEMP, M_WAITOK); 782 dbs->dbs_min = bp->b_rawblkno; 783 dbs->dbs_max = dbs->dbs_min + bp->b_bcount - 1; 784 microtime(&dbs->dbs_failedat); 785 SLIST_INSERT_HEAD(&wd->sc_bslist, dbs, dbs_next); 786 wd->sc_bscount++; 787 } 788 789 bp->b_flags |= B_ERROR; 790 bp->b_error = EIO; 791 break; 792 case NOERROR: 793 noerror: if ((wd->sc_wdc_bio.flags & ATA_CORR) || wd->retries > 0) 794 printf("%s: soft error (corrected)\n", 795 wd->sc_dev.dv_xname); 796 break; 797 case ERR_NODEV: 798 bp->b_flags |= B_ERROR; 799 bp->b_error = EIO; 800 break; 801 } 802 disk_unbusy(&wd->sc_dk, (bp->b_bcount - bp->b_resid), 803 (bp->b_flags & B_READ)); 804 #if NRND > 0 805 rnd_add_uint32(&wd->rnd_source, bp->b_blkno); 806 #endif 807 /* XXX Yuck, but we don't want to increment openings in this case */ 808 if (__predict_false((bp->b_flags & B_CALL) != 0 && 809 bp->b_iodone == wd_split_mod15_write)) 810 biodone(bp); 811 else { 812 biodone(bp); 813 wd->openings++; 814 } 815 wdstart(wd); 816 } 817 818 void 819 wdrestart(void *v) 820 { 821 struct wd_softc *wd = v; 822 struct buf *bp = wd->sc_bp; 823 int s; 824 WDCDEBUG_PRINT(("wdrestart %s\n", wd->sc_dev.dv_xname), 825 DEBUG_XFERS); 826 827 s = splbio(); 828 __wdstart(v, bp); 829 splx(s); 830 } 831 832 int 833 wdread(dev_t dev, struct uio *uio, int flags) 834 { 835 836 WDCDEBUG_PRINT(("wdread\n"), DEBUG_XFERS); 837 return (physio(wdstrategy, NULL, dev, B_READ, minphys, uio)); 838 } 839 840 int 841 wdwrite(dev_t dev, struct uio *uio, int flags) 842 { 843 844 WDCDEBUG_PRINT(("wdwrite\n"), DEBUG_XFERS); 845 return (physio(wdstrategy, NULL, dev, B_WRITE, minphys, uio)); 846 } 847 848 /* 849 * Wait interruptibly for an exclusive lock. 850 * 851 * XXX 852 * Several drivers do this; it should be abstracted and made MP-safe. 853 */ 854 int 855 wdlock(struct wd_softc *wd) 856 { 857 int error; 858 int s; 859 860 WDCDEBUG_PRINT(("wdlock\n"), DEBUG_FUNCS); 861 862 s = splbio(); 863 864 while ((wd->sc_flags & WDF_LOCKED) != 0) { 865 wd->sc_flags |= WDF_WANTED; 866 if ((error = tsleep(wd, PRIBIO | PCATCH, 867 "wdlck", 0)) != 0) { 868 splx(s); 869 return error; 870 } 871 } 872 wd->sc_flags |= WDF_LOCKED; 873 splx(s); 874 return 0; 875 } 876 877 /* 878 * Unlock and wake up any waiters. 879 */ 880 void 881 wdunlock(struct wd_softc *wd) 882 { 883 884 WDCDEBUG_PRINT(("wdunlock\n"), DEBUG_FUNCS); 885 886 wd->sc_flags &= ~WDF_LOCKED; 887 if ((wd->sc_flags & WDF_WANTED) != 0) { 888 wd->sc_flags &= ~WDF_WANTED; 889 wakeup(wd); 890 } 891 } 892 893 int 894 wdopen(dev_t dev, int flag, int fmt, struct proc *p) 895 { 896 struct wd_softc *wd; 897 int part, error; 898 899 WDCDEBUG_PRINT(("wdopen\n"), DEBUG_FUNCS); 900 wd = device_lookup(&wd_cd, WDUNIT(dev)); 901 if (wd == NULL) 902 return (ENXIO); 903 904 /* 905 * If this is the first open of this device, add a reference 906 * to the adapter. 907 */ 908 if (wd->sc_dk.dk_openmask == 0 && 909 (error = wd->atabus->ata_addref(wd->drvp)) != 0) 910 return (error); 911 912 if ((error = wdlock(wd)) != 0) 913 goto bad4; 914 915 if (wd->sc_dk.dk_openmask != 0) { 916 /* 917 * If any partition is open, but the disk has been invalidated, 918 * disallow further opens. 919 */ 920 if ((wd->sc_flags & WDF_LOADED) == 0) { 921 error = EIO; 922 goto bad3; 923 } 924 } else { 925 if ((wd->sc_flags & WDF_LOADED) == 0) { 926 wd->sc_flags |= WDF_LOADED; 927 928 /* Load the physical device parameters. */ 929 wd_get_params(wd, AT_WAIT, &wd->sc_params); 930 931 /* Load the partition info if not already loaded. */ 932 wdgetdisklabel(wd); 933 } 934 } 935 936 part = WDPART(dev); 937 938 /* Check that the partition exists. */ 939 if (part != RAW_PART && 940 (part >= wd->sc_dk.dk_label->d_npartitions || 941 wd->sc_dk.dk_label->d_partitions[part].p_fstype == FS_UNUSED)) { 942 error = ENXIO; 943 goto bad; 944 } 945 946 /* Insure only one open at a time. */ 947 switch (fmt) { 948 case S_IFCHR: 949 wd->sc_dk.dk_copenmask |= (1 << part); 950 break; 951 case S_IFBLK: 952 wd->sc_dk.dk_bopenmask |= (1 << part); 953 break; 954 } 955 wd->sc_dk.dk_openmask = 956 wd->sc_dk.dk_copenmask | wd->sc_dk.dk_bopenmask; 957 958 wdunlock(wd); 959 return 0; 960 961 bad: 962 if (wd->sc_dk.dk_openmask == 0) { 963 } 964 965 bad3: 966 wdunlock(wd); 967 bad4: 968 if (wd->sc_dk.dk_openmask == 0) 969 wd->atabus->ata_delref(wd->drvp); 970 return error; 971 } 972 973 int 974 wdclose(dev_t dev, int flag, int fmt, struct proc *p) 975 { 976 struct wd_softc *wd = device_lookup(&wd_cd, WDUNIT(dev)); 977 int part = WDPART(dev); 978 int error; 979 980 WDCDEBUG_PRINT(("wdclose\n"), DEBUG_FUNCS); 981 if ((error = wdlock(wd)) != 0) 982 return error; 983 984 switch (fmt) { 985 case S_IFCHR: 986 wd->sc_dk.dk_copenmask &= ~(1 << part); 987 break; 988 case S_IFBLK: 989 wd->sc_dk.dk_bopenmask &= ~(1 << part); 990 break; 991 } 992 wd->sc_dk.dk_openmask = 993 wd->sc_dk.dk_copenmask | wd->sc_dk.dk_bopenmask; 994 995 if (wd->sc_dk.dk_openmask == 0) { 996 wd_flushcache(wd, AT_WAIT); 997 /* XXXX Must wait for I/O to complete! */ 998 999 if (! (wd->sc_flags & WDF_KLABEL)) 1000 wd->sc_flags &= ~WDF_LOADED; 1001 1002 wd->atabus->ata_delref(wd->drvp); 1003 } 1004 1005 wdunlock(wd); 1006 return 0; 1007 } 1008 1009 void 1010 wdgetdefaultlabel(struct wd_softc *wd, struct disklabel *lp) 1011 { 1012 1013 WDCDEBUG_PRINT(("wdgetdefaultlabel\n"), DEBUG_FUNCS); 1014 memset(lp, 0, sizeof(struct disklabel)); 1015 1016 lp->d_secsize = DEV_BSIZE; 1017 lp->d_ntracks = wd->sc_params.atap_heads; 1018 lp->d_nsectors = wd->sc_params.atap_sectors; 1019 lp->d_ncylinders = (wd->sc_flags & WDF_LBA) ? wd->sc_capacity / 1020 (wd->sc_params.atap_heads * wd->sc_params.atap_sectors) : 1021 wd->sc_params.atap_cylinders; 1022 lp->d_secpercyl = lp->d_ntracks * lp->d_nsectors; 1023 1024 if (strcmp(wd->sc_params.atap_model, "ST506") == 0) 1025 lp->d_type = DTYPE_ST506; 1026 else 1027 lp->d_type = DTYPE_ESDI; 1028 1029 strncpy(lp->d_typename, wd->sc_params.atap_model, 16); 1030 strncpy(lp->d_packname, "fictitious", 16); 1031 if (wd->sc_capacity > UINT32_MAX) 1032 lp->d_secperunit = UINT32_MAX; 1033 else 1034 lp->d_secperunit = wd->sc_capacity; 1035 lp->d_rpm = 3600; 1036 lp->d_interleave = 1; 1037 lp->d_flags = 0; 1038 1039 lp->d_partitions[RAW_PART].p_offset = 0; 1040 lp->d_partitions[RAW_PART].p_size = 1041 lp->d_secperunit * (lp->d_secsize / DEV_BSIZE); 1042 lp->d_partitions[RAW_PART].p_fstype = FS_UNUSED; 1043 lp->d_npartitions = RAW_PART + 1; 1044 1045 lp->d_magic = DISKMAGIC; 1046 lp->d_magic2 = DISKMAGIC; 1047 lp->d_checksum = dkcksum(lp); 1048 } 1049 1050 /* 1051 * Fabricate a default disk label, and try to read the correct one. 1052 */ 1053 void 1054 wdgetdisklabel(struct wd_softc *wd) 1055 { 1056 struct disklabel *lp = wd->sc_dk.dk_label; 1057 const char *errstring; 1058 1059 WDCDEBUG_PRINT(("wdgetdisklabel\n"), DEBUG_FUNCS); 1060 1061 memset(wd->sc_dk.dk_cpulabel, 0, sizeof(struct cpu_disklabel)); 1062 1063 wdgetdefaultlabel(wd, lp); 1064 1065 wd->sc_badsect[0] = -1; 1066 1067 if (wd->drvp->state > RESET) 1068 wd->drvp->drive_flags |= DRIVE_RESET; 1069 errstring = readdisklabel(MAKEWDDEV(0, wd->sc_dev.dv_unit, RAW_PART), 1070 wdstrategy, lp, wd->sc_dk.dk_cpulabel); 1071 if (errstring) { 1072 /* 1073 * This probably happened because the drive's default 1074 * geometry doesn't match the DOS geometry. We 1075 * assume the DOS geometry is now in the label and try 1076 * again. XXX This is a kluge. 1077 */ 1078 if (wd->drvp->state > RESET) 1079 wd->drvp->drive_flags |= DRIVE_RESET; 1080 errstring = readdisklabel(MAKEWDDEV(0, wd->sc_dev.dv_unit, 1081 RAW_PART), wdstrategy, lp, wd->sc_dk.dk_cpulabel); 1082 } 1083 if (errstring) { 1084 printf("%s: %s\n", wd->sc_dev.dv_xname, errstring); 1085 return; 1086 } 1087 1088 if (wd->drvp->state > RESET) 1089 wd->drvp->drive_flags |= DRIVE_RESET; 1090 #ifdef HAS_BAD144_HANDLING 1091 if ((lp->d_flags & D_BADSECT) != 0) 1092 bad144intern(wd); 1093 #endif 1094 } 1095 1096 void 1097 wdperror(const struct wd_softc *wd) 1098 { 1099 static const char *const errstr0_3[] = {"address mark not found", 1100 "track 0 not found", "aborted command", "media change requested", 1101 "id not found", "media changed", "uncorrectable data error", 1102 "bad block detected"}; 1103 static const char *const errstr4_5[] = { 1104 "obsolete (address mark not found)", 1105 "no media/write protected", "aborted command", 1106 "media change requested", "id not found", "media changed", 1107 "uncorrectable data error", "interface CRC error"}; 1108 const char *const *errstr; 1109 int i; 1110 char *sep = ""; 1111 1112 const char *devname = wd->sc_dev.dv_xname; 1113 struct ata_drive_datas *drvp = wd->drvp; 1114 int errno = wd->sc_wdc_bio.r_error; 1115 1116 if (drvp->ata_vers >= 4) 1117 errstr = errstr4_5; 1118 else 1119 errstr = errstr0_3; 1120 1121 printf("%s: (", devname); 1122 1123 if (errno == 0) 1124 printf("error not notified"); 1125 1126 for (i = 0; i < 8; i++) { 1127 if (errno & (1 << i)) { 1128 printf("%s%s", sep, errstr[i]); 1129 sep = ", "; 1130 } 1131 } 1132 printf(")\n"); 1133 } 1134 1135 int 1136 wdioctl(dev_t dev, u_long xfer, caddr_t addr, int flag, struct proc *p) 1137 { 1138 struct wd_softc *wd = device_lookup(&wd_cd, WDUNIT(dev)); 1139 int error = 0; 1140 #ifdef __HAVE_OLD_DISKLABEL 1141 struct disklabel *newlabel = NULL; 1142 #endif 1143 1144 WDCDEBUG_PRINT(("wdioctl\n"), DEBUG_FUNCS); 1145 1146 if ((wd->sc_flags & WDF_LOADED) == 0) 1147 return EIO; 1148 1149 switch (xfer) { 1150 #ifdef HAS_BAD144_HANDLING 1151 case DIOCSBAD: 1152 if ((flag & FWRITE) == 0) 1153 return EBADF; 1154 wd->sc_dk.dk_cpulabel->bad = *(struct dkbad *)addr; 1155 wd->sc_dk.dk_label->d_flags |= D_BADSECT; 1156 bad144intern(wd); 1157 return 0; 1158 #endif 1159 1160 case DIOCBSLIST : 1161 { 1162 u_int32_t count, missing, skip; 1163 struct disk_badsecinfo dbsi; 1164 struct disk_badsectors *dbs; 1165 size_t available; 1166 caddr_t laddr; 1167 1168 dbsi = *(struct disk_badsecinfo *)addr; 1169 missing = wd->sc_bscount; 1170 count = 0; 1171 available = dbsi.dbsi_bufsize; 1172 skip = dbsi.dbsi_skip; 1173 laddr = dbsi.dbsi_buffer; 1174 1175 /* 1176 * We start this loop with the expectation that all of the 1177 * entries will be missed and decrement this counter each 1178 * time we either skip over one (already copied out) or 1179 * we actually copy it back to user space. The structs 1180 * holding the bad sector information are copied directly 1181 * back to user space whilst the summary is returned via 1182 * the struct passed in via the ioctl. 1183 */ 1184 SLIST_FOREACH(dbs, &wd->sc_bslist, dbs_next) { 1185 if (skip > 0) { 1186 missing--; 1187 skip--; 1188 continue; 1189 } 1190 if (available < sizeof(*dbs)) 1191 break; 1192 available -= sizeof(*dbs); 1193 copyout(dbs, laddr, sizeof(*dbs)); 1194 laddr += sizeof(*dbs); 1195 missing--; 1196 count++; 1197 } 1198 dbsi.dbsi_left = missing; 1199 dbsi.dbsi_copied = count; 1200 *(struct disk_badsecinfo *)addr = dbsi; 1201 return 0; 1202 } 1203 1204 case DIOCBSFLUSH : 1205 /* Clean out the bad sector list */ 1206 while (!SLIST_EMPTY(&wd->sc_bslist)) { 1207 void *head = SLIST_FIRST(&wd->sc_bslist); 1208 SLIST_REMOVE_HEAD(&wd->sc_bslist, dbs_next); 1209 free(head, M_TEMP); 1210 } 1211 wd->sc_bscount = 0; 1212 return 0; 1213 1214 case DIOCGDINFO: 1215 *(struct disklabel *)addr = *(wd->sc_dk.dk_label); 1216 return 0; 1217 #ifdef __HAVE_OLD_DISKLABEL 1218 case ODIOCGDINFO: 1219 newlabel = malloc(sizeof *newlabel, M_TEMP, M_WAITOK); 1220 if (newlabel == NULL) 1221 return EIO; 1222 *newlabel = *(wd->sc_dk.dk_label); 1223 if (newlabel->d_npartitions <= OLDMAXPARTITIONS) 1224 memcpy(addr, newlabel, sizeof (struct olddisklabel)); 1225 else 1226 error = ENOTTY; 1227 free(newlabel, M_TEMP); 1228 return error; 1229 #endif 1230 1231 case DIOCGPART: 1232 ((struct partinfo *)addr)->disklab = wd->sc_dk.dk_label; 1233 ((struct partinfo *)addr)->part = 1234 &wd->sc_dk.dk_label->d_partitions[WDPART(dev)]; 1235 return 0; 1236 1237 case DIOCWDINFO: 1238 case DIOCSDINFO: 1239 #ifdef __HAVE_OLD_DISKLABEL 1240 case ODIOCWDINFO: 1241 case ODIOCSDINFO: 1242 #endif 1243 { 1244 struct disklabel *lp; 1245 1246 if ((flag & FWRITE) == 0) 1247 return EBADF; 1248 1249 #ifdef __HAVE_OLD_DISKLABEL 1250 if (xfer == ODIOCSDINFO || xfer == ODIOCWDINFO) { 1251 newlabel = malloc(sizeof *newlabel, M_TEMP, M_WAITOK); 1252 if (newlabel == NULL) 1253 return EIO; 1254 memset(newlabel, 0, sizeof newlabel); 1255 memcpy(newlabel, addr, sizeof (struct olddisklabel)); 1256 lp = newlabel; 1257 } else 1258 #endif 1259 lp = (struct disklabel *)addr; 1260 1261 if ((error = wdlock(wd)) != 0) 1262 goto bad; 1263 wd->sc_flags |= WDF_LABELLING; 1264 1265 error = setdisklabel(wd->sc_dk.dk_label, 1266 lp, /*wd->sc_dk.dk_openmask : */0, 1267 wd->sc_dk.dk_cpulabel); 1268 if (error == 0) { 1269 if (wd->drvp->state > RESET) 1270 wd->drvp->drive_flags |= DRIVE_RESET; 1271 if (xfer == DIOCWDINFO 1272 #ifdef __HAVE_OLD_DISKLABEL 1273 || xfer == ODIOCWDINFO 1274 #endif 1275 ) 1276 error = writedisklabel(WDLABELDEV(dev), 1277 wdstrategy, wd->sc_dk.dk_label, 1278 wd->sc_dk.dk_cpulabel); 1279 } 1280 1281 wd->sc_flags &= ~WDF_LABELLING; 1282 wdunlock(wd); 1283 bad: 1284 #ifdef __HAVE_OLD_DISKLABEL 1285 if (newlabel != NULL) 1286 free(newlabel, M_TEMP); 1287 #endif 1288 return error; 1289 } 1290 1291 case DIOCKLABEL: 1292 if (*(int *)addr) 1293 wd->sc_flags |= WDF_KLABEL; 1294 else 1295 wd->sc_flags &= ~WDF_KLABEL; 1296 return 0; 1297 1298 case DIOCWLABEL: 1299 if ((flag & FWRITE) == 0) 1300 return EBADF; 1301 if (*(int *)addr) 1302 wd->sc_flags |= WDF_WLABEL; 1303 else 1304 wd->sc_flags &= ~WDF_WLABEL; 1305 return 0; 1306 1307 case DIOCGDEFLABEL: 1308 wdgetdefaultlabel(wd, (struct disklabel *)addr); 1309 return 0; 1310 #ifdef __HAVE_OLD_DISKLABEL 1311 case ODIOCGDEFLABEL: 1312 newlabel = malloc(sizeof *newlabel, M_TEMP, M_WAITOK); 1313 if (newlabel == NULL) 1314 return EIO; 1315 wdgetdefaultlabel(wd, newlabel); 1316 if (newlabel->d_npartitions <= OLDMAXPARTITIONS) 1317 memcpy(addr, &newlabel, sizeof (struct olddisklabel)); 1318 else 1319 error = ENOTTY; 1320 free(newlabel, M_TEMP); 1321 return error; 1322 #endif 1323 1324 #ifdef notyet 1325 case DIOCWFORMAT: 1326 if ((flag & FWRITE) == 0) 1327 return EBADF; 1328 { 1329 register struct format_op *fop; 1330 struct iovec aiov; 1331 struct uio auio; 1332 1333 fop = (struct format_op *)addr; 1334 aiov.iov_base = fop->df_buf; 1335 aiov.iov_len = fop->df_count; 1336 auio.uio_iov = &aiov; 1337 auio.uio_iovcnt = 1; 1338 auio.uio_resid = fop->df_count; 1339 auio.uio_segflg = 0; 1340 auio.uio_offset = 1341 fop->df_startblk * wd->sc_dk.dk_label->d_secsize; 1342 auio.uio_procp = p; 1343 error = physio(wdformat, NULL, dev, B_WRITE, minphys, 1344 &auio); 1345 fop->df_count -= auio.uio_resid; 1346 fop->df_reg[0] = wdc->sc_status; 1347 fop->df_reg[1] = wdc->sc_error; 1348 return error; 1349 } 1350 #endif 1351 case DIOCGCACHE: 1352 return wd_getcache(wd, (int *)addr); 1353 1354 case DIOCSCACHE: 1355 return wd_setcache(wd, *(int *)addr); 1356 1357 case ATAIOCCOMMAND: 1358 /* 1359 * Make sure this command is (relatively) safe first 1360 */ 1361 if ((((atareq_t *) addr)->flags & ATACMD_READ) == 0 && 1362 (flag & FWRITE) == 0) 1363 return (EBADF); 1364 { 1365 struct wd_ioctl *wi; 1366 atareq_t *atareq = (atareq_t *) addr; 1367 int error; 1368 1369 wi = wi_get(); 1370 wi->wi_softc = wd; 1371 wi->wi_atareq = *atareq; 1372 1373 if (atareq->datalen && atareq->flags & 1374 (ATACMD_READ | ATACMD_WRITE)) { 1375 wi->wi_iov.iov_base = atareq->databuf; 1376 wi->wi_iov.iov_len = atareq->datalen; 1377 wi->wi_uio.uio_iov = &wi->wi_iov; 1378 wi->wi_uio.uio_iovcnt = 1; 1379 wi->wi_uio.uio_resid = atareq->datalen; 1380 wi->wi_uio.uio_offset = 0; 1381 wi->wi_uio.uio_segflg = UIO_USERSPACE; 1382 wi->wi_uio.uio_rw = 1383 (atareq->flags & ATACMD_READ) ? B_READ : B_WRITE; 1384 wi->wi_uio.uio_procp = p; 1385 error = physio(wdioctlstrategy, &wi->wi_bp, dev, 1386 (atareq->flags & ATACMD_READ) ? B_READ : B_WRITE, 1387 minphys, &wi->wi_uio); 1388 } else { 1389 /* No need to call physio if we don't have any 1390 user data */ 1391 wi->wi_bp.b_flags = 0; 1392 wi->wi_bp.b_data = 0; 1393 wi->wi_bp.b_bcount = 0; 1394 wi->wi_bp.b_dev = 0; 1395 wi->wi_bp.b_proc = p; 1396 wdioctlstrategy(&wi->wi_bp); 1397 error = wi->wi_bp.b_error; 1398 } 1399 *atareq = wi->wi_atareq; 1400 wi_free(wi); 1401 return(error); 1402 } 1403 1404 default: 1405 return ENOTTY; 1406 } 1407 1408 #ifdef DIAGNOSTIC 1409 panic("wdioctl: impossible"); 1410 #endif 1411 } 1412 1413 #ifdef B_FORMAT 1414 int 1415 wdformat(struct buf *bp) 1416 { 1417 1418 bp->b_flags |= B_FORMAT; 1419 return wdstrategy(bp); 1420 } 1421 #endif 1422 1423 int 1424 wdsize(dev_t dev) 1425 { 1426 struct wd_softc *wd; 1427 int part, omask; 1428 int size; 1429 1430 WDCDEBUG_PRINT(("wdsize\n"), DEBUG_FUNCS); 1431 1432 wd = device_lookup(&wd_cd, WDUNIT(dev)); 1433 if (wd == NULL) 1434 return (-1); 1435 1436 part = WDPART(dev); 1437 omask = wd->sc_dk.dk_openmask & (1 << part); 1438 1439 if (omask == 0 && wdopen(dev, 0, S_IFBLK, NULL) != 0) 1440 return (-1); 1441 if (wd->sc_dk.dk_label->d_partitions[part].p_fstype != FS_SWAP) 1442 size = -1; 1443 else 1444 size = wd->sc_dk.dk_label->d_partitions[part].p_size * 1445 (wd->sc_dk.dk_label->d_secsize / DEV_BSIZE); 1446 if (omask == 0 && wdclose(dev, 0, S_IFBLK, NULL) != 0) 1447 return (-1); 1448 return (size); 1449 } 1450 1451 /* #define WD_DUMP_NOT_TRUSTED if you just want to watch */ 1452 static int wddoingadump = 0; 1453 static int wddumprecalibrated = 0; 1454 static int wddumpmulti = 1; 1455 1456 /* 1457 * Dump core after a system crash. 1458 */ 1459 int 1460 wddump(dev_t dev, daddr_t blkno, caddr_t va, size_t size) 1461 { 1462 struct wd_softc *wd; /* disk unit to do the I/O */ 1463 struct disklabel *lp; /* disk's disklabel */ 1464 int part, err; 1465 int nblks; /* total number of sectors left to write */ 1466 1467 /* Check if recursive dump; if so, punt. */ 1468 if (wddoingadump) 1469 return EFAULT; 1470 wddoingadump = 1; 1471 1472 wd = device_lookup(&wd_cd, WDUNIT(dev)); 1473 if (wd == NULL) 1474 return (ENXIO); 1475 1476 part = WDPART(dev); 1477 1478 /* Convert to disk sectors. Request must be a multiple of size. */ 1479 lp = wd->sc_dk.dk_label; 1480 if ((size % lp->d_secsize) != 0) 1481 return EFAULT; 1482 nblks = size / lp->d_secsize; 1483 blkno = blkno / (lp->d_secsize / DEV_BSIZE); 1484 1485 /* Check transfer bounds against partition size. */ 1486 if ((blkno < 0) || ((blkno + nblks) > lp->d_partitions[part].p_size)) 1487 return EINVAL; 1488 1489 /* Offset block number to start of partition. */ 1490 blkno += lp->d_partitions[part].p_offset; 1491 1492 /* Recalibrate, if first dump transfer. */ 1493 if (wddumprecalibrated == 0) { 1494 wddumpmulti = wd->sc_multi; 1495 wddumprecalibrated = 1; 1496 wd->drvp->state = RESET; 1497 } 1498 1499 while (nblks > 0) { 1500 again: 1501 wd->sc_bp = NULL; 1502 wd->sc_wdc_bio.blkno = blkno; 1503 wd->sc_wdc_bio.flags = ATA_POLL; 1504 if (wddumpmulti == 1) 1505 wd->sc_wdc_bio.flags |= ATA_SINGLE; 1506 if (wd->sc_flags & WDF_LBA48 && blkno > LBA48_THRESHOLD) 1507 wd->sc_wdc_bio.flags |= ATA_LBA48; 1508 if (wd->sc_flags & WDF_LBA) 1509 wd->sc_wdc_bio.flags |= ATA_LBA; 1510 wd->sc_wdc_bio.bcount = 1511 min(nblks, wddumpmulti) * lp->d_secsize; 1512 wd->sc_wdc_bio.databuf = va; 1513 #ifndef WD_DUMP_NOT_TRUSTED 1514 switch (wd->atabus->ata_bio(wd->drvp, &wd->sc_wdc_bio)) { 1515 case WDC_TRY_AGAIN: 1516 panic("wddump: try again"); 1517 break; 1518 case WDC_QUEUED: 1519 panic("wddump: polled command has been queued"); 1520 break; 1521 case WDC_COMPLETE: 1522 break; 1523 } 1524 switch(wd->sc_wdc_bio.error) { 1525 case TIMEOUT: 1526 printf("wddump: device timed out"); 1527 err = EIO; 1528 break; 1529 case ERR_DF: 1530 printf("wddump: drive fault"); 1531 err = EIO; 1532 break; 1533 case ERR_DMA: 1534 printf("wddump: DMA error"); 1535 err = EIO; 1536 break; 1537 case ERROR: 1538 printf("wddump: "); 1539 wdperror(wd); 1540 err = EIO; 1541 break; 1542 case NOERROR: 1543 err = 0; 1544 break; 1545 default: 1546 panic("wddump: unknown error type"); 1547 } 1548 if (err != 0) { 1549 if (wddumpmulti != 1) { 1550 wddumpmulti = 1; /* retry in single-sector */ 1551 printf(", retrying\n"); 1552 goto again; 1553 } 1554 printf("\n"); 1555 return err; 1556 } 1557 #else /* WD_DUMP_NOT_TRUSTED */ 1558 /* Let's just talk about this first... */ 1559 printf("wd%d: dump addr 0x%x, cylin %d, head %d, sector %d\n", 1560 unit, va, cylin, head, sector); 1561 delay(500 * 1000); /* half a second */ 1562 #endif 1563 1564 /* update block count */ 1565 nblks -= min(nblks, wddumpmulti); 1566 blkno += min(nblks, wddumpmulti); 1567 va += min(nblks, wddumpmulti) * lp->d_secsize; 1568 } 1569 1570 wddoingadump = 0; 1571 return 0; 1572 } 1573 1574 #ifdef HAS_BAD144_HANDLING 1575 /* 1576 * Internalize the bad sector table. 1577 */ 1578 void 1579 bad144intern(struct wd_softc *wd) 1580 { 1581 struct dkbad *bt = &wd->sc_dk.dk_cpulabel->bad; 1582 struct disklabel *lp = wd->sc_dk.dk_label; 1583 int i = 0; 1584 1585 WDCDEBUG_PRINT(("bad144intern\n"), DEBUG_XFERS); 1586 1587 for (; i < NBT_BAD; i++) { 1588 if (bt->bt_bad[i].bt_cyl == 0xffff) 1589 break; 1590 wd->sc_badsect[i] = 1591 bt->bt_bad[i].bt_cyl * lp->d_secpercyl + 1592 (bt->bt_bad[i].bt_trksec >> 8) * lp->d_nsectors + 1593 (bt->bt_bad[i].bt_trksec & 0xff); 1594 } 1595 for (; i < NBT_BAD+1; i++) 1596 wd->sc_badsect[i] = -1; 1597 } 1598 #endif 1599 1600 int 1601 wd_get_params(struct wd_softc *wd, u_int8_t flags, struct ataparams *params) 1602 { 1603 switch (wd->atabus->ata_get_params(wd->drvp, flags, params)) { 1604 case CMD_AGAIN: 1605 return 1; 1606 case CMD_ERR: 1607 /* 1608 * We `know' there's a drive here; just assume it's old. 1609 * This geometry is only used to read the MBR and print a 1610 * (false) attach message. 1611 */ 1612 strncpy(params->atap_model, "ST506", 1613 sizeof params->atap_model); 1614 params->atap_config = ATA_CFG_FIXED; 1615 params->atap_cylinders = 1024; 1616 params->atap_heads = 8; 1617 params->atap_sectors = 17; 1618 params->atap_multi = 1; 1619 params->atap_capabilities1 = params->atap_capabilities2 = 0; 1620 wd->drvp->ata_vers = -1; /* Mark it as pre-ATA */ 1621 return 0; 1622 case CMD_OK: 1623 return 0; 1624 default: 1625 panic("wd_get_params: bad return code from ata_get_params"); 1626 /* NOTREACHED */ 1627 } 1628 } 1629 1630 int 1631 wd_getcache(struct wd_softc *wd, int *bitsp) 1632 { 1633 struct ataparams params; 1634 1635 if (wd_get_params(wd, AT_WAIT, ¶ms) != 0) 1636 return EIO; 1637 if (params.atap_cmd_set1 == 0x0000 || 1638 params.atap_cmd_set1 == 0xffff || 1639 (params.atap_cmd_set1 & WDC_CMD1_CACHE) == 0) { 1640 *bitsp = 0; 1641 return 0; 1642 } 1643 *bitsp = DKCACHE_WCHANGE | DKCACHE_READ; 1644 if (params.atap_cmd1_en & WDC_CMD1_CACHE) 1645 *bitsp |= DKCACHE_WRITE; 1646 1647 return 0; 1648 } 1649 1650 int 1651 wd_setcache(struct wd_softc *wd, int bits) 1652 { 1653 struct ataparams params; 1654 struct wdc_command wdc_c; 1655 1656 if (wd_get_params(wd, AT_WAIT, ¶ms) != 0) 1657 return EIO; 1658 1659 if (params.atap_cmd_set1 == 0x0000 || 1660 params.atap_cmd_set1 == 0xffff || 1661 (params.atap_cmd_set1 & WDC_CMD1_CACHE) == 0) 1662 return EOPNOTSUPP; 1663 1664 if ((bits & DKCACHE_READ) == 0 || 1665 (bits & DKCACHE_SAVE) != 0) 1666 return EOPNOTSUPP; 1667 1668 memset(&wdc_c, 0, sizeof(struct wdc_command)); 1669 wdc_c.r_command = SET_FEATURES; 1670 wdc_c.r_st_bmask = 0; 1671 wdc_c.r_st_pmask = 0; 1672 wdc_c.timeout = 30000; /* 30s timeout */ 1673 wdc_c.flags = AT_WAIT; 1674 if (bits & DKCACHE_WRITE) 1675 wdc_c.r_precomp = WDSF_WRITE_CACHE_EN; 1676 else 1677 wdc_c.r_precomp = WDSF_WRITE_CACHE_DS; 1678 if (wd->atabus->ata_exec_command(wd->drvp, &wdc_c) != WDC_COMPLETE) { 1679 printf("%s: wd_setcache command not complete\n", 1680 wd->sc_dev.dv_xname); 1681 return EIO; 1682 } 1683 if (wdc_c.flags & (AT_ERROR | AT_TIMEOU | AT_DF)) { 1684 printf("%s: wd_setcache command error 0x%x\n", 1685 wd->sc_dev.dv_xname, wdc_c.flags); 1686 return EIO; 1687 } 1688 if (wdc_c.flags & ERR_NODEV) 1689 return ENODEV; 1690 return 0; 1691 } 1692 1693 void 1694 wd_flushcache(struct wd_softc *wd, int flags) 1695 { 1696 struct wdc_command wdc_c; 1697 1698 if (wd->drvp->ata_vers < 4) /* WDCC_FLUSHCACHE is here since ATA-4 */ 1699 return; 1700 memset(&wdc_c, 0, sizeof(struct wdc_command)); 1701 wdc_c.r_command = WDCC_FLUSHCACHE; 1702 wdc_c.r_st_bmask = WDCS_DRDY; 1703 wdc_c.r_st_pmask = WDCS_DRDY; 1704 wdc_c.flags = flags; 1705 wdc_c.timeout = 30000; /* 30s timeout */ 1706 if (wd->atabus->ata_exec_command(wd->drvp, &wdc_c) != WDC_COMPLETE) { 1707 printf("%s: flush cache command didn't complete\n", 1708 wd->sc_dev.dv_xname); 1709 } 1710 if (wdc_c.flags & AT_TIMEOU) { 1711 printf("%s: flush cache command timeout\n", 1712 wd->sc_dev.dv_xname); 1713 } 1714 if (wdc_c.flags & AT_DF) { 1715 printf("%s: flush cache command: drive fault\n", 1716 wd->sc_dev.dv_xname); 1717 } 1718 /* 1719 * Ignore error register, it shouldn't report anything else 1720 * than COMMAND ABORTED, which means the device doesn't support 1721 * flush cache 1722 */ 1723 } 1724 1725 void 1726 wd_shutdown(void *arg) 1727 { 1728 struct wd_softc *wd = arg; 1729 wd_flushcache(wd, AT_POLL); 1730 } 1731 1732 /* 1733 * Allocate space for a ioctl queue structure. Mostly taken from 1734 * scsipi_ioctl.c 1735 */ 1736 struct wd_ioctl * 1737 wi_get(void) 1738 { 1739 struct wd_ioctl *wi; 1740 int s; 1741 1742 wi = malloc(sizeof(struct wd_ioctl), M_TEMP, M_WAITOK|M_ZERO); 1743 simple_lock_init(&wi->wi_bp.b_interlock); 1744 s = splbio(); 1745 LIST_INSERT_HEAD(&wi_head, wi, wi_list); 1746 splx(s); 1747 return (wi); 1748 } 1749 1750 /* 1751 * Free an ioctl structure and remove it from our list 1752 */ 1753 1754 void 1755 wi_free(struct wd_ioctl *wi) 1756 { 1757 int s; 1758 1759 s = splbio(); 1760 LIST_REMOVE(wi, wi_list); 1761 splx(s); 1762 free(wi, M_TEMP); 1763 } 1764 1765 /* 1766 * Find a wd_ioctl structure based on the struct buf. 1767 */ 1768 1769 struct wd_ioctl * 1770 wi_find(struct buf *bp) 1771 { 1772 struct wd_ioctl *wi; 1773 int s; 1774 1775 s = splbio(); 1776 for (wi = wi_head.lh_first; wi != 0; wi = wi->wi_list.le_next) 1777 if (bp == &wi->wi_bp) 1778 break; 1779 splx(s); 1780 return (wi); 1781 } 1782 1783 /* 1784 * Ioctl pseudo strategy routine 1785 * 1786 * This is mostly stolen from scsipi_ioctl.c:scsistrategy(). What 1787 * happens here is: 1788 * 1789 * - wdioctl() queues a wd_ioctl structure. 1790 * 1791 * - wdioctl() calls physio/wdioctlstrategy based on whether or not 1792 * user space I/O is required. If physio() is called, physio() eventually 1793 * calls wdioctlstrategy(). 1794 * 1795 * - In either case, wdioctlstrategy() calls wd->atabus->ata_exec_command() 1796 * to perform the actual command 1797 * 1798 * The reason for the use of the pseudo strategy routine is because 1799 * when doing I/O to/from user space, physio _really_ wants to be in 1800 * the loop. We could put the entire buffer into the ioctl request 1801 * structure, but that won't scale if we want to do things like download 1802 * microcode. 1803 */ 1804 1805 void 1806 wdioctlstrategy(struct buf *bp) 1807 { 1808 struct wd_ioctl *wi; 1809 struct wdc_command wdc_c; 1810 int error = 0; 1811 1812 wi = wi_find(bp); 1813 if (wi == NULL) { 1814 printf("user_strat: No ioctl\n"); 1815 error = EINVAL; 1816 goto bad; 1817 } 1818 1819 memset(&wdc_c, 0, sizeof(wdc_c)); 1820 1821 /* 1822 * Abort if physio broke up the transfer 1823 */ 1824 1825 if (bp->b_bcount != wi->wi_atareq.datalen) { 1826 printf("physio split wd ioctl request... cannot proceed\n"); 1827 error = EIO; 1828 goto bad; 1829 } 1830 1831 /* 1832 * Abort if we didn't get a buffer size that was a multiple of 1833 * our sector size (or was larger than NBBY) 1834 */ 1835 1836 if ((bp->b_bcount % wi->wi_softc->sc_dk.dk_label->d_secsize) != 0 || 1837 (bp->b_bcount / wi->wi_softc->sc_dk.dk_label->d_secsize) >= 1838 (1 << NBBY)) { 1839 error = EINVAL; 1840 goto bad; 1841 } 1842 1843 /* 1844 * Make sure a timeout was supplied in the ioctl request 1845 */ 1846 1847 if (wi->wi_atareq.timeout == 0) { 1848 error = EINVAL; 1849 goto bad; 1850 } 1851 1852 if (wi->wi_atareq.flags & ATACMD_READ) 1853 wdc_c.flags |= AT_READ; 1854 else if (wi->wi_atareq.flags & ATACMD_WRITE) 1855 wdc_c.flags |= AT_WRITE; 1856 1857 if (wi->wi_atareq.flags & ATACMD_READREG) 1858 wdc_c.flags |= AT_READREG; 1859 1860 wdc_c.flags |= AT_WAIT; 1861 1862 wdc_c.timeout = wi->wi_atareq.timeout; 1863 wdc_c.r_command = wi->wi_atareq.command; 1864 wdc_c.r_head = wi->wi_atareq.head & 0x0f; 1865 wdc_c.r_cyl = wi->wi_atareq.cylinder; 1866 wdc_c.r_sector = wi->wi_atareq.sec_num; 1867 wdc_c.r_count = wi->wi_atareq.sec_count; 1868 wdc_c.r_precomp = wi->wi_atareq.features; 1869 wdc_c.r_st_bmask = WDCS_DRDY; 1870 wdc_c.r_st_pmask = WDCS_DRDY; 1871 wdc_c.data = wi->wi_bp.b_data; 1872 wdc_c.bcount = wi->wi_bp.b_bcount; 1873 1874 if (wi->wi_softc->atabus->ata_exec_command(wi->wi_softc->drvp, &wdc_c) 1875 != WDC_COMPLETE) { 1876 wi->wi_atareq.retsts = ATACMD_ERROR; 1877 goto bad; 1878 } 1879 1880 if (wdc_c.flags & (AT_ERROR | AT_TIMEOU | AT_DF)) { 1881 if (wdc_c.flags & AT_ERROR) { 1882 wi->wi_atareq.retsts = ATACMD_ERROR; 1883 wi->wi_atareq.error = wdc_c.r_error; 1884 } else if (wdc_c.flags & AT_DF) 1885 wi->wi_atareq.retsts = ATACMD_DF; 1886 else 1887 wi->wi_atareq.retsts = ATACMD_TIMEOUT; 1888 } else { 1889 wi->wi_atareq.retsts = ATACMD_OK; 1890 if (wi->wi_atareq.flags & ATACMD_READREG) { 1891 wi->wi_atareq.head = wdc_c.r_head ; 1892 wi->wi_atareq.cylinder = wdc_c.r_cyl; 1893 wi->wi_atareq.sec_num = wdc_c.r_sector; 1894 wi->wi_atareq.sec_count = wdc_c.r_count; 1895 wi->wi_atareq.features = wdc_c.r_precomp; 1896 wi->wi_atareq.error = wdc_c.r_error; 1897 } 1898 } 1899 1900 bp->b_error = 0; 1901 biodone(bp); 1902 return; 1903 bad: 1904 bp->b_flags |= B_ERROR; 1905 bp->b_error = error; 1906 biodone(bp); 1907 } 1908
Indexes created Sun Oct 19 16:10:00 GMT 2025