wd.c revision 1.270
1 /* $NetBSD: wd.c,v 1.270 2003/12/14 05:33:29 thorpej 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 1.270 2003/12/14 05:33:29 thorpej 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 204 205 #define WD_QUIRK_SPLIT_MOD15_WRITE 0x0001 /* must split certain writes */ 206 207 /* 208 * Quirk table for IDE drives. Put more-specific matches first, since 209 * a simple globbing routine is used for matching. 210 */ 211 static const struct wd_quirk { 212 const char *wdq_match; /* inquiry pattern to match */ 213 int wdq_quirks; /* drive quirks */ 214 } wd_quirk_table[] = { 215 /* 216 * Some Seagate S-ATA drives have a PHY which can get confused 217 * with the way data is packetized by some S-ATA controllers. 218 * 219 * The work-around is to split in two any write transfer whose 220 * sector count % 15 == 1 (assuming 512 byte sectors). 221 * 222 * XXX This is an incomplete list. There are at least a couple 223 * XXX more model numbers. If you have trouble with such transfers 224 * XXX (8K is the most common) on Seagate S-ATA drives, please 225 * XXX notify thorpej (at) NetBSD.org. 226 */ 227 { "ST3120023AS", 228 WD_QUIRK_SPLIT_MOD15_WRITE }, 229 { "ST380023AS", 230 WD_QUIRK_SPLIT_MOD15_WRITE }, 231 232 { NULL, 233 0 } 234 }; 235 236 static const struct wd_quirk * 237 wd_lookup_quirks(const char *name) 238 { 239 const struct wd_quirk *wdq; 240 const char *estr; 241 242 for (wdq = wd_quirk_table; wdq->wdq_match != NULL; wdq++) { 243 /* 244 * We only want exact matches (which include matches 245 * against globbing characters). 246 */ 247 if (pmatch(name, wdq->wdq_match, &estr) == 2) 248 return (wdq); 249 } 250 return (NULL); 251 } 252 253 int 254 wdprobe(struct device *parent, struct cfdata *match, void *aux) 255 { 256 struct ata_device *adev = aux; 257 258 if (adev == NULL) 259 return 0; 260 if (adev->adev_bustype->bustype_type != SCSIPI_BUSTYPE_ATA) 261 return 0; 262 263 if (match->cf_loc[ATA_HLCF_DRIVE] != ATA_HLCF_DRIVE_DEFAULT && 264 match->cf_loc[ATA_HLCF_DRIVE] != adev->adev_drv_data->drive) 265 return 0; 266 return 1; 267 } 268 269 void 270 wdattach(struct device *parent, struct device *self, void *aux) 271 { 272 struct wd_softc *wd = (void *)self; 273 struct ata_device *adev= aux; 274 int i, blank; 275 char buf[41], pbuf[9], c, *p, *q; 276 const struct wd_quirk *wdq; 277 WDCDEBUG_PRINT(("wdattach\n"), DEBUG_FUNCS | DEBUG_PROBE); 278 279 lockinit(&wd->sc_lock, PRIBIO | PCATCH, "wdlock", 0, 0); 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; 292 293 wd->drvp->drv_done = wddone; 294 wd->drvp->drv_softc = &wd->sc_dev; 295 296 aprint_naive("\n"); 297 298 /* read our drive info */ 299 if (wd_get_params(wd, AT_WAIT, &wd->sc_params) != 0) { 300 aprint_error("\n%s: IDENTIFY failed\n", wd->sc_dev.dv_xname); 301 return; 302 } 303 304 for (blank = 0, p = wd->sc_params.atap_model, q = buf, i = 0; 305 i < sizeof(wd->sc_params.atap_model); i++) { 306 c = *p++; 307 if (c == '\0') 308 break; 309 if (c != ' ') { 310 if (blank) { 311 *q++ = ' '; 312 blank = 0; 313 } 314 *q++ = c; 315 } else 316 blank = 1; 317 } 318 *q++ = '\0'; 319 320 aprint_normal(": <%s>\n", buf); 321 322 wdq = wd_lookup_quirks(buf); 323 if (wdq != NULL) 324 wd->sc_quirks = wdq->wdq_quirks; 325 326 if ((wd->sc_params.atap_multi & 0xff) > 1) { 327 wd->sc_multi = wd->sc_params.atap_multi & 0xff; 328 } else { 329 wd->sc_multi = 1; 330 } 331 332 aprint_normal("%s: drive supports %d-sector PIO transfers,", 333 wd->sc_dev.dv_xname, wd->sc_multi); 334 335 /* 48-bit LBA addressing */ 336 if ((wd->sc_params.atap_cmd2_en & ATA_CMD2_LBA48) != 0) 337 wd->sc_flags |= WDF_LBA48; 338 339 /* Prior to ATA-4, LBA was optional. */ 340 if ((wd->sc_params.atap_capabilities1 & WDC_CAP_LBA) != 0) 341 wd->sc_flags |= WDF_LBA; 342 #if 0 343 /* ATA-4 requires LBA. */ 344 if (wd->sc_params.atap_ataversion != 0xffff && 345 wd->sc_params.atap_ataversion >= WDC_VER_ATA4) 346 wd->sc_flags |= WDF_LBA; 347 #endif 348 349 if ((wd->sc_flags & WDF_LBA48) != 0) { 350 aprint_normal(" LBA48 addressing\n"); 351 wd->sc_capacity = 352 ((u_int64_t) wd->sc_params.__reserved6[11] << 48) | 353 ((u_int64_t) wd->sc_params.__reserved6[10] << 32) | 354 ((u_int64_t) wd->sc_params.__reserved6[9] << 16) | 355 ((u_int64_t) wd->sc_params.__reserved6[8] << 0); 356 } else if ((wd->sc_flags & WDF_LBA) != 0) { 357 aprint_normal(" LBA addressing\n"); 358 wd->sc_capacity = 359 (wd->sc_params.atap_capacity[1] << 16) | 360 wd->sc_params.atap_capacity[0]; 361 } else { 362 aprint_normal(" chs addressing\n"); 363 wd->sc_capacity = 364 wd->sc_params.atap_cylinders * 365 wd->sc_params.atap_heads * 366 wd->sc_params.atap_sectors; 367 } 368 format_bytes(pbuf, sizeof(pbuf), wd->sc_capacity * DEV_BSIZE); 369 aprint_normal("%s: %s, %d cyl, %d head, %d sec, " 370 "%d bytes/sect x %llu sectors\n", 371 self->dv_xname, pbuf, 372 (wd->sc_flags & WDF_LBA) ? (int)(wd->sc_capacity / 373 (wd->sc_params.atap_heads * wd->sc_params.atap_sectors)) : 374 wd->sc_params.atap_cylinders, 375 wd->sc_params.atap_heads, wd->sc_params.atap_sectors, 376 DEV_BSIZE, (unsigned long long)wd->sc_capacity); 377 378 WDCDEBUG_PRINT(("%s: atap_dmatiming_mimi=%d, atap_dmatiming_recom=%d\n", 379 self->dv_xname, wd->sc_params.atap_dmatiming_mimi, 380 wd->sc_params.atap_dmatiming_recom), DEBUG_PROBE); 381 /* 382 * Initialize and attach the disk structure. 383 */ 384 wd->sc_dk.dk_driver = &wddkdriver; 385 wd->sc_dk.dk_name = wd->sc_dev.dv_xname; 386 disk_attach(&wd->sc_dk); 387 wd->sc_wdc_bio.lp = wd->sc_dk.dk_label; 388 wd->sc_sdhook = shutdownhook_establish(wd_shutdown, wd); 389 if (wd->sc_sdhook == NULL) 390 aprint_error("%s: WARNING: unable to establish shutdown hook\n", 391 wd->sc_dev.dv_xname); 392 #if NRND > 0 393 rnd_attach_source(&wd->rnd_source, wd->sc_dev.dv_xname, 394 RND_TYPE_DISK, 0); 395 #endif 396 } 397 398 int 399 wdactivate(struct device *self, enum devact act) 400 { 401 int rv = 0; 402 403 switch (act) { 404 case DVACT_ACTIVATE: 405 rv = EOPNOTSUPP; 406 break; 407 408 case DVACT_DEACTIVATE: 409 /* 410 * Nothing to do; we key off the device's DVF_ACTIVATE. 411 */ 412 break; 413 } 414 return (rv); 415 } 416 417 int 418 wddetach(struct device *self, int flags) 419 { 420 struct wd_softc *sc = (struct wd_softc *)self; 421 struct buf *bp; 422 int s, bmaj, cmaj, i, mn; 423 424 lockmgr(&sc->sc_lock, LK_DRAIN, NULL); 425 426 /* Clean out the bad sector list */ 427 while (!SLIST_EMPTY(&sc->sc_bslist)) { 428 void *head = SLIST_FIRST(&sc->sc_bslist); 429 SLIST_REMOVE_HEAD(&sc->sc_bslist, dbs_next); 430 free(head, M_TEMP); 431 } 432 sc->sc_bscount = 0; 433 434 /* locate the major number */ 435 bmaj = bdevsw_lookup_major(&wd_bdevsw); 436 cmaj = cdevsw_lookup_major(&wd_cdevsw); 437 438 s = splbio(); 439 440 /* Kill off any queued buffers. */ 441 while ((bp = BUFQ_GET(&sc->sc_q)) != NULL) { 442 bp->b_error = EIO; 443 bp->b_flags |= B_ERROR; 444 bp->b_resid = bp->b_bcount; 445 biodone(bp); 446 } 447 448 bufq_free(&sc->sc_q); 449 450 splx(s); 451 452 /* Nuke the vnodes for any open instances. */ 453 for (i = 0; i < MAXPARTITIONS; i++) { 454 mn = WDMINOR(self->dv_unit, i); 455 vdevgone(bmaj, mn, mn, VBLK); 456 vdevgone(cmaj, mn, mn, VCHR); 457 } 458 459 /* Detach disk. */ 460 disk_detach(&sc->sc_dk); 461 462 /* Get rid of the shutdown hook. */ 463 if (sc->sc_sdhook != NULL) 464 shutdownhook_disestablish(sc->sc_sdhook); 465 466 #if NRND > 0 467 /* Unhook the entropy source. */ 468 rnd_detach_source(&sc->rnd_source); 469 #endif 470 471 return (0); 472 } 473 474 /* 475 * Read/write routine for a buffer. Validates the arguments and schedules the 476 * transfer. Does not wait for the transfer to complete. 477 */ 478 void 479 wdstrategy(struct buf *bp) 480 { 481 struct wd_softc *wd = device_lookup(&wd_cd, WDUNIT(bp->b_dev)); 482 struct disklabel *lp = wd->sc_dk.dk_label; 483 daddr_t blkno; 484 int s; 485 486 WDCDEBUG_PRINT(("wdstrategy (%s)\n", wd->sc_dev.dv_xname), 487 DEBUG_XFERS); 488 489 /* Valid request? */ 490 if (bp->b_blkno < 0 || 491 (bp->b_bcount % lp->d_secsize) != 0 || 492 (bp->b_bcount / lp->d_secsize) >= (1 << NBBY)) { 493 bp->b_error = EINVAL; 494 goto bad; 495 } 496 497 /* If device invalidated (e.g. media change, door open), error. */ 498 if ((wd->sc_flags & WDF_LOADED) == 0) { 499 bp->b_error = EIO; 500 goto bad; 501 } 502 503 /* If it's a null transfer, return immediately. */ 504 if (bp->b_bcount == 0) 505 goto done; 506 507 /* 508 * Do bounds checking, adjust transfer. if error, process. 509 * If end of partition, just return. 510 */ 511 if (WDPART(bp->b_dev) == RAW_PART) { 512 if (bounds_check_with_mediasize(bp, DEV_BSIZE, 513 wd->sc_capacity) <= 0) 514 goto done; 515 } else { 516 if (bounds_check_with_label(&wd->sc_dk, bp, 517 (wd->sc_flags & (WDF_WLABEL|WDF_LABELLING)) != 0) <= 0) 518 goto done; 519 } 520 521 /* 522 * Now convert the block number to absolute and put it in 523 * terms of the device's logical block size. 524 */ 525 if (lp->d_secsize >= DEV_BSIZE) 526 blkno = bp->b_blkno / (lp->d_secsize / DEV_BSIZE); 527 else 528 blkno = bp->b_blkno * (DEV_BSIZE / lp->d_secsize); 529 530 if (WDPART(bp->b_dev) != RAW_PART) 531 blkno += lp->d_partitions[WDPART(bp->b_dev)].p_offset; 532 533 bp->b_rawblkno = blkno; 534 535 /* 536 * If the transfer about to be attempted contains only a block that 537 * is known to be bad then return an error for the transfer without 538 * even attempting to start a transfer up under the premis that we 539 * will just end up doing more retries for a transfer that will end 540 * up failing again. 541 * XXX:SMP - mutex required to protect with DIOCBSFLUSH 542 */ 543 if (__predict_false(!SLIST_EMPTY(&wd->sc_bslist))) { 544 struct disk_badsectors *dbs; 545 daddr_t maxblk = blkno + (bp->b_bcount / DEV_BSIZE) - 1; 546 547 SLIST_FOREACH(dbs, &wd->sc_bslist, dbs_next) 548 if ((dbs->dbs_min <= blkno && blkno <= dbs->dbs_max) || 549 (dbs->dbs_min <= maxblk && maxblk <= dbs->dbs_max)){ 550 bp->b_error = EIO; 551 goto bad; 552 } 553 } 554 555 /* Queue transfer on drive, activate drive and controller if idle. */ 556 s = splbio(); 557 BUFQ_PUT(&wd->sc_q, bp); 558 wdstart(wd); 559 splx(s); 560 return; 561 bad: 562 bp->b_flags |= B_ERROR; 563 done: 564 /* Toss transfer; we're done early. */ 565 bp->b_resid = bp->b_bcount; 566 biodone(bp); 567 } 568 569 /* 570 * Queue a drive for I/O. 571 */ 572 void 573 wdstart(void *arg) 574 { 575 struct wd_softc *wd = arg; 576 struct buf *bp = NULL; 577 578 WDCDEBUG_PRINT(("wdstart %s\n", wd->sc_dev.dv_xname), 579 DEBUG_XFERS); 580 while (wd->openings > 0) { 581 582 /* Is there a buf for us ? */ 583 if ((bp = BUFQ_GET(&wd->sc_q)) == NULL) 584 return; 585 586 /* 587 * Make the command. First lock the device 588 */ 589 wd->openings--; 590 591 wd->retries = 0; 592 __wdstart(wd, bp); 593 } 594 } 595 596 static void 597 wd_split_mod15_write(struct buf *bp) 598 { 599 struct buf *obp = bp->b_private; 600 struct wd_softc *sc = wd_cd.cd_devs[DISKUNIT(obp->b_dev)]; 601 602 if (__predict_false(bp->b_flags & B_ERROR) != 0) { 603 /* 604 * Propagate the error. If this was the first half of 605 * the original transfer, make sure to account for that 606 * in the residual. 607 */ 608 if (bp->b_data == obp->b_data) 609 bp->b_resid += bp->b_bcount; 610 goto done; 611 } 612 613 /* 614 * If this was the second half of the transfer, we're all done! 615 */ 616 if (bp->b_data != obp->b_data) 617 goto done; 618 619 /* 620 * Advance the pointer to the second half and issue that command 621 * using the same opening. 622 */ 623 bp->b_flags = obp->b_flags | B_CALL; 624 bp->b_data += bp->b_bcount; 625 bp->b_blkno += (bp->b_bcount / 512); 626 bp->b_rawblkno += (bp->b_bcount / 512); 627 __wdstart(sc, bp); 628 return; 629 630 done: 631 obp->b_flags |= (bp->b_flags & (B_EINTR|B_ERROR)); 632 obp->b_error = bp->b_error; 633 obp->b_resid = bp->b_resid; 634 pool_put(&bufpool, bp); 635 biodone(obp); 636 sc->openings++; 637 /* wddone() will call wdstart() */ 638 } 639 640 void 641 __wdstart(struct wd_softc *wd, struct buf *bp) 642 { 643 644 /* 645 * Deal with the "split mod15 write" quirk. We just divide the 646 * transfer in two, doing the first half and then then second half 647 * with the same command opening. 648 * 649 * Note we MUST do this here, because we can't let insertion 650 * into the bufq cause the transfers to be re-merged. 651 */ 652 if (__predict_false((wd->sc_quirks & WD_QUIRK_SPLIT_MOD15_WRITE) != 0 && 653 (bp->b_flags & B_READ) == 0 && 654 bp->b_bcount > 512 && 655 ((bp->b_bcount / 512) % 15) == 1)) { 656 struct buf *nbp; 657 658 /* already at splbio */ 659 nbp = pool_get(&bufpool, PR_NOWAIT); 660 if (__predict_false(nbp == NULL)) { 661 /* No memory -- fail the iop. */ 662 bp->b_error = ENOMEM; 663 bp->b_flags |= B_ERROR; 664 bp->b_resid = bp->b_bcount; 665 biodone(bp); 666 wd->openings++; 667 return; 668 } 669 670 BUF_INIT(nbp); 671 nbp->b_error = 0; 672 nbp->b_proc = bp->b_proc; 673 nbp->b_vp = NULLVP; 674 nbp->b_dev = bp->b_dev; 675 676 nbp->b_bcount = bp->b_bcount / 2; 677 nbp->b_bufsize = bp->b_bcount / 2; 678 nbp->b_data = bp->b_data; 679 680 nbp->b_blkno = bp->b_blkno; 681 nbp->b_rawblkno = bp->b_rawblkno; 682 683 nbp->b_flags = bp->b_flags | B_CALL; 684 nbp->b_iodone = wd_split_mod15_write; 685 686 /* Put ptr to orig buf in b_private and use new buf */ 687 nbp->b_private = bp; 688 bp = nbp; 689 } 690 691 wd->sc_wdc_bio.blkno = bp->b_rawblkno; 692 wd->sc_wdc_bio.blkdone =0; 693 wd->sc_bp = bp; 694 /* 695 * If we're retrying, retry in single-sector mode. This will give us 696 * the sector number of the problem, and will eventually allow the 697 * transfer to succeed. 698 */ 699 if (wd->sc_multi == 1 || wd->retries >= WDIORETRIES_SINGLE) 700 wd->sc_wdc_bio.flags = ATA_SINGLE; 701 else 702 wd->sc_wdc_bio.flags = 0; 703 if (wd->sc_flags & WDF_LBA48 && wd->sc_wdc_bio.blkno > LBA48_THRESHOLD) 704 wd->sc_wdc_bio.flags |= ATA_LBA48; 705 if (wd->sc_flags & WDF_LBA) 706 wd->sc_wdc_bio.flags |= ATA_LBA; 707 if (bp->b_flags & B_READ) 708 wd->sc_wdc_bio.flags |= ATA_READ; 709 wd->sc_wdc_bio.bcount = bp->b_bcount; 710 wd->sc_wdc_bio.databuf = bp->b_data; 711 /* Instrumentation. */ 712 disk_busy(&wd->sc_dk); 713 switch (wd->atabus->ata_bio(wd->drvp, &wd->sc_wdc_bio)) { 714 case WDC_TRY_AGAIN: 715 callout_reset(&wd->sc_restart_ch, hz, wdrestart, wd); 716 break; 717 case WDC_QUEUED: 718 case WDC_COMPLETE: 719 break; 720 default: 721 panic("__wdstart: bad return code from ata_bio()"); 722 } 723 } 724 725 void 726 wddone(void *v) 727 { 728 struct wd_softc *wd = v; 729 struct buf *bp = wd->sc_bp; 730 const char *errmsg; 731 int do_perror = 0; 732 WDCDEBUG_PRINT(("wddone %s\n", wd->sc_dev.dv_xname), 733 DEBUG_XFERS); 734 735 if (bp == NULL) 736 return; 737 bp->b_resid = wd->sc_wdc_bio.bcount; 738 switch (wd->sc_wdc_bio.error) { 739 case ERR_DMA: 740 errmsg = "DMA error"; 741 goto retry; 742 case ERR_DF: 743 errmsg = "device fault"; 744 goto retry; 745 case TIMEOUT: 746 errmsg = "device timeout"; 747 goto retry; 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 diskerr(bp, "wd", errmsg, LOG_PRINTF, 758 wd->sc_wdc_bio.blkdone, wd->sc_dk.dk_label); 759 if (wd->retries < WDIORETRIES) 760 printf(", retrying\n"); 761 if (do_perror) 762 wdperror(wd); 763 if (wd->retries < WDIORETRIES) { 764 wd->retries++; 765 callout_reset(&wd->sc_restart_ch, RECOVERYTIME, 766 wdrestart, wd); 767 return; 768 } 769 printf("\n"); 770 771 /* 772 * Not all errors indicate a failed block but those that do, 773 * put the block on the bad-block list for the device. Only 774 * do this for reads because the drive should do it for writes, 775 * itself, according to Manuel. 776 */ 777 if ((bp->b_flags & B_READ) && 778 ((wd->drvp->ata_vers >= 4 && wd->sc_wdc_bio.r_error & 64) || 779 (wd->drvp->ata_vers < 4 && wd->sc_wdc_bio.r_error & 192))) { 780 struct disk_badsectors *dbs; 781 782 dbs = malloc(sizeof *dbs, M_TEMP, M_WAITOK); 783 dbs->dbs_min = bp->b_rawblkno; 784 dbs->dbs_max = dbs->dbs_min + bp->b_bcount - 1; 785 microtime(&dbs->dbs_failedat); 786 SLIST_INSERT_HEAD(&wd->sc_bslist, dbs, dbs_next); 787 wd->sc_bscount++; 788 } 789 790 bp->b_flags |= B_ERROR; 791 bp->b_error = EIO; 792 break; 793 case NOERROR: 794 noerror: if ((wd->sc_wdc_bio.flags & ATA_CORR) || wd->retries > 0) 795 printf("%s: soft error (corrected)\n", 796 wd->sc_dev.dv_xname); 797 break; 798 case ERR_NODEV: 799 bp->b_flags |= B_ERROR; 800 bp->b_error = EIO; 801 break; 802 } 803 disk_unbusy(&wd->sc_dk, (bp->b_bcount - bp->b_resid), 804 (bp->b_flags & B_READ)); 805 #if NRND > 0 806 rnd_add_uint32(&wd->rnd_source, bp->b_blkno); 807 #endif 808 /* XXX Yuck, but we don't want to increment openings in this case */ 809 if (__predict_false((bp->b_flags & B_CALL) != 0 && 810 bp->b_iodone == wd_split_mod15_write)) 811 biodone(bp); 812 else { 813 biodone(bp); 814 wd->openings++; 815 } 816 wdstart(wd); 817 } 818 819 void 820 wdrestart(void *v) 821 { 822 struct wd_softc *wd = v; 823 struct buf *bp = wd->sc_bp; 824 int s; 825 WDCDEBUG_PRINT(("wdrestart %s\n", wd->sc_dev.dv_xname), 826 DEBUG_XFERS); 827 828 s = splbio(); 829 __wdstart(v, bp); 830 splx(s); 831 } 832 833 int 834 wdread(dev_t dev, struct uio *uio, int flags) 835 { 836 837 WDCDEBUG_PRINT(("wdread\n"), DEBUG_XFERS); 838 return (physio(wdstrategy, NULL, dev, B_READ, minphys, uio)); 839 } 840 841 int 842 wdwrite(dev_t dev, struct uio *uio, int flags) 843 { 844 845 WDCDEBUG_PRINT(("wdwrite\n"), DEBUG_XFERS); 846 return (physio(wdstrategy, NULL, dev, B_WRITE, minphys, uio)); 847 } 848 849 int 850 wdopen(dev_t dev, int flag, int fmt, struct proc *p) 851 { 852 struct wd_softc *wd; 853 int part, error; 854 855 WDCDEBUG_PRINT(("wdopen\n"), DEBUG_FUNCS); 856 wd = device_lookup(&wd_cd, WDUNIT(dev)); 857 if (wd == NULL) 858 return (ENXIO); 859 860 /* 861 * If this is the first open of this device, add a reference 862 * to the adapter. 863 */ 864 if (wd->sc_dk.dk_openmask == 0 && 865 (error = wd->atabus->ata_addref(wd->drvp)) != 0) 866 return (error); 867 868 if ((error = lockmgr(&wd->sc_lock, LK_EXCLUSIVE, NULL)) != 0) 869 goto bad4; 870 871 if (wd->sc_dk.dk_openmask != 0) { 872 /* 873 * If any partition is open, but the disk has been invalidated, 874 * disallow further opens. 875 */ 876 if ((wd->sc_flags & WDF_LOADED) == 0) { 877 error = EIO; 878 goto bad3; 879 } 880 } else { 881 if ((wd->sc_flags & WDF_LOADED) == 0) { 882 wd->sc_flags |= WDF_LOADED; 883 884 /* Load the physical device parameters. */ 885 wd_get_params(wd, AT_WAIT, &wd->sc_params); 886 887 /* Load the partition info if not already loaded. */ 888 wdgetdisklabel(wd); 889 } 890 } 891 892 part = WDPART(dev); 893 894 /* Check that the partition exists. */ 895 if (part != RAW_PART && 896 (part >= wd->sc_dk.dk_label->d_npartitions || 897 wd->sc_dk.dk_label->d_partitions[part].p_fstype == FS_UNUSED)) { 898 error = ENXIO; 899 goto bad; 900 } 901 902 /* Insure only one open at a time. */ 903 switch (fmt) { 904 case S_IFCHR: 905 wd->sc_dk.dk_copenmask |= (1 << part); 906 break; 907 case S_IFBLK: 908 wd->sc_dk.dk_bopenmask |= (1 << part); 909 break; 910 } 911 wd->sc_dk.dk_openmask = 912 wd->sc_dk.dk_copenmask | wd->sc_dk.dk_bopenmask; 913 914 lockmgr(&wd->sc_lock, LK_RELEASE, NULL); 915 return 0; 916 917 bad: 918 if (wd->sc_dk.dk_openmask == 0) { 919 } 920 921 bad3: 922 lockmgr(&wd->sc_lock, LK_RELEASE, NULL); 923 bad4: 924 if (wd->sc_dk.dk_openmask == 0) 925 wd->atabus->ata_delref(wd->drvp); 926 return error; 927 } 928 929 int 930 wdclose(dev_t dev, int flag, int fmt, struct proc *p) 931 { 932 struct wd_softc *wd = device_lookup(&wd_cd, WDUNIT(dev)); 933 int part = WDPART(dev); 934 int error; 935 936 WDCDEBUG_PRINT(("wdclose\n"), DEBUG_FUNCS); 937 if ((error = lockmgr(&wd->sc_lock, LK_EXCLUSIVE, NULL)) != 0) 938 return error; 939 940 switch (fmt) { 941 case S_IFCHR: 942 wd->sc_dk.dk_copenmask &= ~(1 << part); 943 break; 944 case S_IFBLK: 945 wd->sc_dk.dk_bopenmask &= ~(1 << part); 946 break; 947 } 948 wd->sc_dk.dk_openmask = 949 wd->sc_dk.dk_copenmask | wd->sc_dk.dk_bopenmask; 950 951 if (wd->sc_dk.dk_openmask == 0) { 952 wd_flushcache(wd, AT_WAIT); 953 /* XXXX Must wait for I/O to complete! */ 954 955 if (! (wd->sc_flags & WDF_KLABEL)) 956 wd->sc_flags &= ~WDF_LOADED; 957 958 wd->atabus->ata_delref(wd->drvp); 959 } 960 961 lockmgr(&wd->sc_lock, LK_RELEASE, NULL); 962 return 0; 963 } 964 965 void 966 wdgetdefaultlabel(struct wd_softc *wd, struct disklabel *lp) 967 { 968 969 WDCDEBUG_PRINT(("wdgetdefaultlabel\n"), DEBUG_FUNCS); 970 memset(lp, 0, sizeof(struct disklabel)); 971 972 lp->d_secsize = DEV_BSIZE; 973 lp->d_ntracks = wd->sc_params.atap_heads; 974 lp->d_nsectors = wd->sc_params.atap_sectors; 975 lp->d_ncylinders = (wd->sc_flags & WDF_LBA) ? wd->sc_capacity / 976 (wd->sc_params.atap_heads * wd->sc_params.atap_sectors) : 977 wd->sc_params.atap_cylinders; 978 lp->d_secpercyl = lp->d_ntracks * lp->d_nsectors; 979 980 if (strcmp(wd->sc_params.atap_model, "ST506") == 0) 981 lp->d_type = DTYPE_ST506; 982 else 983 lp->d_type = DTYPE_ESDI; 984 985 strncpy(lp->d_typename, wd->sc_params.atap_model, 16); 986 strncpy(lp->d_packname, "fictitious", 16); 987 if (wd->sc_capacity > UINT32_MAX) 988 lp->d_secperunit = UINT32_MAX; 989 else 990 lp->d_secperunit = wd->sc_capacity; 991 lp->d_rpm = 3600; 992 lp->d_interleave = 1; 993 lp->d_flags = 0; 994 995 lp->d_partitions[RAW_PART].p_offset = 0; 996 lp->d_partitions[RAW_PART].p_size = 997 lp->d_secperunit * (lp->d_secsize / DEV_BSIZE); 998 lp->d_partitions[RAW_PART].p_fstype = FS_UNUSED; 999 lp->d_npartitions = RAW_PART + 1; 1000 1001 lp->d_magic = DISKMAGIC; 1002 lp->d_magic2 = DISKMAGIC; 1003 lp->d_checksum = dkcksum(lp); 1004 } 1005 1006 /* 1007 * Fabricate a default disk label, and try to read the correct one. 1008 */ 1009 void 1010 wdgetdisklabel(struct wd_softc *wd) 1011 { 1012 struct disklabel *lp = wd->sc_dk.dk_label; 1013 const char *errstring; 1014 1015 WDCDEBUG_PRINT(("wdgetdisklabel\n"), DEBUG_FUNCS); 1016 1017 memset(wd->sc_dk.dk_cpulabel, 0, sizeof(struct cpu_disklabel)); 1018 1019 wdgetdefaultlabel(wd, lp); 1020 1021 wd->sc_badsect[0] = -1; 1022 1023 if (wd->drvp->state > RESET) 1024 wd->drvp->drive_flags |= DRIVE_RESET; 1025 errstring = readdisklabel(MAKEWDDEV(0, wd->sc_dev.dv_unit, RAW_PART), 1026 wdstrategy, lp, wd->sc_dk.dk_cpulabel); 1027 if (errstring) { 1028 /* 1029 * This probably happened because the drive's default 1030 * geometry doesn't match the DOS geometry. We 1031 * assume the DOS geometry is now in the label and try 1032 * again. XXX This is a kluge. 1033 */ 1034 if (wd->drvp->state > RESET) 1035 wd->drvp->drive_flags |= DRIVE_RESET; 1036 errstring = readdisklabel(MAKEWDDEV(0, wd->sc_dev.dv_unit, 1037 RAW_PART), wdstrategy, lp, wd->sc_dk.dk_cpulabel); 1038 } 1039 if (errstring) { 1040 printf("%s: %s\n", wd->sc_dev.dv_xname, errstring); 1041 return; 1042 } 1043 1044 if (wd->drvp->state > RESET) 1045 wd->drvp->drive_flags |= DRIVE_RESET; 1046 #ifdef HAS_BAD144_HANDLING 1047 if ((lp->d_flags & D_BADSECT) != 0) 1048 bad144intern(wd); 1049 #endif 1050 } 1051 1052 void 1053 wdperror(const struct wd_softc *wd) 1054 { 1055 static const char *const errstr0_3[] = {"address mark not found", 1056 "track 0 not found", "aborted command", "media change requested", 1057 "id not found", "media changed", "uncorrectable data error", 1058 "bad block detected"}; 1059 static const char *const errstr4_5[] = { 1060 "obsolete (address mark not found)", 1061 "no media/write protected", "aborted command", 1062 "media change requested", "id not found", "media changed", 1063 "uncorrectable data error", "interface CRC error"}; 1064 const char *const *errstr; 1065 int i; 1066 char *sep = ""; 1067 1068 const char *devname = wd->sc_dev.dv_xname; 1069 struct ata_drive_datas *drvp = wd->drvp; 1070 int errno = wd->sc_wdc_bio.r_error; 1071 1072 if (drvp->ata_vers >= 4) 1073 errstr = errstr4_5; 1074 else 1075 errstr = errstr0_3; 1076 1077 printf("%s: (", devname); 1078 1079 if (errno == 0) 1080 printf("error not notified"); 1081 1082 for (i = 0; i < 8; i++) { 1083 if (errno & (1 << i)) { 1084 printf("%s%s", sep, errstr[i]); 1085 sep = ", "; 1086 } 1087 } 1088 printf(")\n"); 1089 } 1090 1091 int 1092 wdioctl(dev_t dev, u_long xfer, caddr_t addr, int flag, struct proc *p) 1093 { 1094 struct wd_softc *wd = device_lookup(&wd_cd, WDUNIT(dev)); 1095 int error = 0; 1096 #ifdef __HAVE_OLD_DISKLABEL 1097 struct disklabel *newlabel = NULL; 1098 #endif 1099 1100 WDCDEBUG_PRINT(("wdioctl\n"), DEBUG_FUNCS); 1101 1102 if ((wd->sc_flags & WDF_LOADED) == 0) 1103 return EIO; 1104 1105 switch (xfer) { 1106 #ifdef HAS_BAD144_HANDLING 1107 case DIOCSBAD: 1108 if ((flag & FWRITE) == 0) 1109 return EBADF; 1110 wd->sc_dk.dk_cpulabel->bad = *(struct dkbad *)addr; 1111 wd->sc_dk.dk_label->d_flags |= D_BADSECT; 1112 bad144intern(wd); 1113 return 0; 1114 #endif 1115 1116 case DIOCBSLIST : 1117 { 1118 u_int32_t count, missing, skip; 1119 struct disk_badsecinfo dbsi; 1120 struct disk_badsectors *dbs; 1121 size_t available; 1122 caddr_t laddr; 1123 1124 dbsi = *(struct disk_badsecinfo *)addr; 1125 missing = wd->sc_bscount; 1126 count = 0; 1127 available = dbsi.dbsi_bufsize; 1128 skip = dbsi.dbsi_skip; 1129 laddr = dbsi.dbsi_buffer; 1130 1131 /* 1132 * We start this loop with the expectation that all of the 1133 * entries will be missed and decrement this counter each 1134 * time we either skip over one (already copied out) or 1135 * we actually copy it back to user space. The structs 1136 * holding the bad sector information are copied directly 1137 * back to user space whilst the summary is returned via 1138 * the struct passed in via the ioctl. 1139 */ 1140 SLIST_FOREACH(dbs, &wd->sc_bslist, dbs_next) { 1141 if (skip > 0) { 1142 missing--; 1143 skip--; 1144 continue; 1145 } 1146 if (available < sizeof(*dbs)) 1147 break; 1148 available -= sizeof(*dbs); 1149 copyout(dbs, laddr, sizeof(*dbs)); 1150 laddr += sizeof(*dbs); 1151 missing--; 1152 count++; 1153 } 1154 dbsi.dbsi_left = missing; 1155 dbsi.dbsi_copied = count; 1156 *(struct disk_badsecinfo *)addr = dbsi; 1157 return 0; 1158 } 1159 1160 case DIOCBSFLUSH : 1161 /* Clean out the bad sector list */ 1162 while (!SLIST_EMPTY(&wd->sc_bslist)) { 1163 void *head = SLIST_FIRST(&wd->sc_bslist); 1164 SLIST_REMOVE_HEAD(&wd->sc_bslist, dbs_next); 1165 free(head, M_TEMP); 1166 } 1167 wd->sc_bscount = 0; 1168 return 0; 1169 1170 case DIOCGDINFO: 1171 *(struct disklabel *)addr = *(wd->sc_dk.dk_label); 1172 return 0; 1173 #ifdef __HAVE_OLD_DISKLABEL 1174 case ODIOCGDINFO: 1175 newlabel = malloc(sizeof *newlabel, M_TEMP, M_WAITOK); 1176 if (newlabel == NULL) 1177 return EIO; 1178 *newlabel = *(wd->sc_dk.dk_label); 1179 if (newlabel->d_npartitions <= OLDMAXPARTITIONS) 1180 memcpy(addr, newlabel, sizeof (struct olddisklabel)); 1181 else 1182 error = ENOTTY; 1183 free(newlabel, M_TEMP); 1184 return error; 1185 #endif 1186 1187 case DIOCGPART: 1188 ((struct partinfo *)addr)->disklab = wd->sc_dk.dk_label; 1189 ((struct partinfo *)addr)->part = 1190 &wd->sc_dk.dk_label->d_partitions[WDPART(dev)]; 1191 return 0; 1192 1193 case DIOCWDINFO: 1194 case DIOCSDINFO: 1195 #ifdef __HAVE_OLD_DISKLABEL 1196 case ODIOCWDINFO: 1197 case ODIOCSDINFO: 1198 #endif 1199 { 1200 struct disklabel *lp; 1201 1202 if ((flag & FWRITE) == 0) 1203 return EBADF; 1204 1205 #ifdef __HAVE_OLD_DISKLABEL 1206 if (xfer == ODIOCSDINFO || xfer == ODIOCWDINFO) { 1207 newlabel = malloc(sizeof *newlabel, M_TEMP, M_WAITOK); 1208 if (newlabel == NULL) 1209 return EIO; 1210 memset(newlabel, 0, sizeof newlabel); 1211 memcpy(newlabel, addr, sizeof (struct olddisklabel)); 1212 lp = newlabel; 1213 } else 1214 #endif 1215 lp = (struct disklabel *)addr; 1216 1217 if ((error = lockmgr(&wd->sc_lock, LK_EXCLUSIVE, NULL)) != 0) 1218 goto bad; 1219 wd->sc_flags |= WDF_LABELLING; 1220 1221 error = setdisklabel(wd->sc_dk.dk_label, 1222 lp, /*wd->sc_dk.dk_openmask : */0, 1223 wd->sc_dk.dk_cpulabel); 1224 if (error == 0) { 1225 if (wd->drvp->state > RESET) 1226 wd->drvp->drive_flags |= DRIVE_RESET; 1227 if (xfer == DIOCWDINFO 1228 #ifdef __HAVE_OLD_DISKLABEL 1229 || xfer == ODIOCWDINFO 1230 #endif 1231 ) 1232 error = writedisklabel(WDLABELDEV(dev), 1233 wdstrategy, wd->sc_dk.dk_label, 1234 wd->sc_dk.dk_cpulabel); 1235 } 1236 1237 wd->sc_flags &= ~WDF_LABELLING; 1238 lockmgr(&wd->sc_lock, LK_RELEASE, NULL); 1239 bad: 1240 #ifdef __HAVE_OLD_DISKLABEL 1241 if (newlabel != NULL) 1242 free(newlabel, M_TEMP); 1243 #endif 1244 return error; 1245 } 1246 1247 case DIOCKLABEL: 1248 if (*(int *)addr) 1249 wd->sc_flags |= WDF_KLABEL; 1250 else 1251 wd->sc_flags &= ~WDF_KLABEL; 1252 return 0; 1253 1254 case DIOCWLABEL: 1255 if ((flag & FWRITE) == 0) 1256 return EBADF; 1257 if (*(int *)addr) 1258 wd->sc_flags |= WDF_WLABEL; 1259 else 1260 wd->sc_flags &= ~WDF_WLABEL; 1261 return 0; 1262 1263 case DIOCGDEFLABEL: 1264 wdgetdefaultlabel(wd, (struct disklabel *)addr); 1265 return 0; 1266 #ifdef __HAVE_OLD_DISKLABEL 1267 case ODIOCGDEFLABEL: 1268 newlabel = malloc(sizeof *newlabel, M_TEMP, M_WAITOK); 1269 if (newlabel == NULL) 1270 return EIO; 1271 wdgetdefaultlabel(wd, newlabel); 1272 if (newlabel->d_npartitions <= OLDMAXPARTITIONS) 1273 memcpy(addr, &newlabel, sizeof (struct olddisklabel)); 1274 else 1275 error = ENOTTY; 1276 free(newlabel, M_TEMP); 1277 return error; 1278 #endif 1279 1280 #ifdef notyet 1281 case DIOCWFORMAT: 1282 if ((flag & FWRITE) == 0) 1283 return EBADF; 1284 { 1285 register struct format_op *fop; 1286 struct iovec aiov; 1287 struct uio auio; 1288 1289 fop = (struct format_op *)addr; 1290 aiov.iov_base = fop->df_buf; 1291 aiov.iov_len = fop->df_count; 1292 auio.uio_iov = &aiov; 1293 auio.uio_iovcnt = 1; 1294 auio.uio_resid = fop->df_count; 1295 auio.uio_segflg = 0; 1296 auio.uio_offset = 1297 fop->df_startblk * wd->sc_dk.dk_label->d_secsize; 1298 auio.uio_procp = p; 1299 error = physio(wdformat, NULL, dev, B_WRITE, minphys, 1300 &auio); 1301 fop->df_count -= auio.uio_resid; 1302 fop->df_reg[0] = wdc->sc_status; 1303 fop->df_reg[1] = wdc->sc_error; 1304 return error; 1305 } 1306 #endif 1307 case DIOCGCACHE: 1308 return wd_getcache(wd, (int *)addr); 1309 1310 case DIOCSCACHE: 1311 return wd_setcache(wd, *(int *)addr); 1312 1313 case ATAIOCCOMMAND: 1314 /* 1315 * Make sure this command is (relatively) safe first 1316 */ 1317 if ((((atareq_t *) addr)->flags & ATACMD_READ) == 0 && 1318 (flag & FWRITE) == 0) 1319 return (EBADF); 1320 { 1321 struct wd_ioctl *wi; 1322 atareq_t *atareq = (atareq_t *) addr; 1323 int error; 1324 1325 wi = wi_get(); 1326 wi->wi_softc = wd; 1327 wi->wi_atareq = *atareq; 1328 1329 if (atareq->datalen && atareq->flags & 1330 (ATACMD_READ | ATACMD_WRITE)) { 1331 wi->wi_iov.iov_base = atareq->databuf; 1332 wi->wi_iov.iov_len = atareq->datalen; 1333 wi->wi_uio.uio_iov = &wi->wi_iov; 1334 wi->wi_uio.uio_iovcnt = 1; 1335 wi->wi_uio.uio_resid = atareq->datalen; 1336 wi->wi_uio.uio_offset = 0; 1337 wi->wi_uio.uio_segflg = UIO_USERSPACE; 1338 wi->wi_uio.uio_rw = 1339 (atareq->flags & ATACMD_READ) ? B_READ : B_WRITE; 1340 wi->wi_uio.uio_procp = p; 1341 error = physio(wdioctlstrategy, &wi->wi_bp, dev, 1342 (atareq->flags & ATACMD_READ) ? B_READ : B_WRITE, 1343 minphys, &wi->wi_uio); 1344 } else { 1345 /* No need to call physio if we don't have any 1346 user data */ 1347 wi->wi_bp.b_flags = 0; 1348 wi->wi_bp.b_data = 0; 1349 wi->wi_bp.b_bcount = 0; 1350 wi->wi_bp.b_dev = 0; 1351 wi->wi_bp.b_proc = p; 1352 wdioctlstrategy(&wi->wi_bp); 1353 error = wi->wi_bp.b_error; 1354 } 1355 *atareq = wi->wi_atareq; 1356 wi_free(wi); 1357 return(error); 1358 } 1359 1360 default: 1361 return ENOTTY; 1362 } 1363 1364 #ifdef DIAGNOSTIC 1365 panic("wdioctl: impossible"); 1366 #endif 1367 } 1368 1369 #ifdef B_FORMAT 1370 int 1371 wdformat(struct buf *bp) 1372 { 1373 1374 bp->b_flags |= B_FORMAT; 1375 return wdstrategy(bp); 1376 } 1377 #endif 1378 1379 int 1380 wdsize(dev_t dev) 1381 { 1382 struct wd_softc *wd; 1383 int part, omask; 1384 int size; 1385 1386 WDCDEBUG_PRINT(("wdsize\n"), DEBUG_FUNCS); 1387 1388 wd = device_lookup(&wd_cd, WDUNIT(dev)); 1389 if (wd == NULL) 1390 return (-1); 1391 1392 part = WDPART(dev); 1393 omask = wd->sc_dk.dk_openmask & (1 << part); 1394 1395 if (omask == 0 && wdopen(dev, 0, S_IFBLK, NULL) != 0) 1396 return (-1); 1397 if (wd->sc_dk.dk_label->d_partitions[part].p_fstype != FS_SWAP) 1398 size = -1; 1399 else 1400 size = wd->sc_dk.dk_label->d_partitions[part].p_size * 1401 (wd->sc_dk.dk_label->d_secsize / DEV_BSIZE); 1402 if (omask == 0 && wdclose(dev, 0, S_IFBLK, NULL) != 0) 1403 return (-1); 1404 return (size); 1405 } 1406 1407 /* #define WD_DUMP_NOT_TRUSTED if you just want to watch */ 1408 static int wddoingadump = 0; 1409 static int wddumprecalibrated = 0; 1410 static int wddumpmulti = 1; 1411 1412 /* 1413 * Dump core after a system crash. 1414 */ 1415 int 1416 wddump(dev_t dev, daddr_t blkno, caddr_t va, size_t size) 1417 { 1418 struct wd_softc *wd; /* disk unit to do the I/O */ 1419 struct disklabel *lp; /* disk's disklabel */ 1420 int part, err; 1421 int nblks; /* total number of sectors left to write */ 1422 1423 /* Check if recursive dump; if so, punt. */ 1424 if (wddoingadump) 1425 return EFAULT; 1426 wddoingadump = 1; 1427 1428 wd = device_lookup(&wd_cd, WDUNIT(dev)); 1429 if (wd == NULL) 1430 return (ENXIO); 1431 1432 part = WDPART(dev); 1433 1434 /* Convert to disk sectors. Request must be a multiple of size. */ 1435 lp = wd->sc_dk.dk_label; 1436 if ((size % lp->d_secsize) != 0) 1437 return EFAULT; 1438 nblks = size / lp->d_secsize; 1439 blkno = blkno / (lp->d_secsize / DEV_BSIZE); 1440 1441 /* Check transfer bounds against partition size. */ 1442 if ((blkno < 0) || ((blkno + nblks) > lp->d_partitions[part].p_size)) 1443 return EINVAL; 1444 1445 /* Offset block number to start of partition. */ 1446 blkno += lp->d_partitions[part].p_offset; 1447 1448 /* Recalibrate, if first dump transfer. */ 1449 if (wddumprecalibrated == 0) { 1450 wddumpmulti = wd->sc_multi; 1451 wddumprecalibrated = 1; 1452 wd->drvp->state = RESET; 1453 } 1454 1455 while (nblks > 0) { 1456 again: 1457 wd->sc_bp = NULL; 1458 wd->sc_wdc_bio.blkno = blkno; 1459 wd->sc_wdc_bio.flags = ATA_POLL; 1460 if (wddumpmulti == 1) 1461 wd->sc_wdc_bio.flags |= ATA_SINGLE; 1462 if (wd->sc_flags & WDF_LBA48 && blkno > LBA48_THRESHOLD) 1463 wd->sc_wdc_bio.flags |= ATA_LBA48; 1464 if (wd->sc_flags & WDF_LBA) 1465 wd->sc_wdc_bio.flags |= ATA_LBA; 1466 wd->sc_wdc_bio.bcount = 1467 min(nblks, wddumpmulti) * lp->d_secsize; 1468 wd->sc_wdc_bio.databuf = va; 1469 #ifndef WD_DUMP_NOT_TRUSTED 1470 switch (wd->atabus->ata_bio(wd->drvp, &wd->sc_wdc_bio)) { 1471 case WDC_TRY_AGAIN: 1472 panic("wddump: try again"); 1473 break; 1474 case WDC_QUEUED: 1475 panic("wddump: polled command has been queued"); 1476 break; 1477 case WDC_COMPLETE: 1478 break; 1479 } 1480 switch(wd->sc_wdc_bio.error) { 1481 case TIMEOUT: 1482 printf("wddump: device timed out"); 1483 err = EIO; 1484 break; 1485 case ERR_DF: 1486 printf("wddump: drive fault"); 1487 err = EIO; 1488 break; 1489 case ERR_DMA: 1490 printf("wddump: DMA error"); 1491 err = EIO; 1492 break; 1493 case ERROR: 1494 printf("wddump: "); 1495 wdperror(wd); 1496 err = EIO; 1497 break; 1498 case NOERROR: 1499 err = 0; 1500 break; 1501 default: 1502 panic("wddump: unknown error type"); 1503 } 1504 if (err != 0) { 1505 if (wddumpmulti != 1) { 1506 wddumpmulti = 1; /* retry in single-sector */ 1507 printf(", retrying\n"); 1508 goto again; 1509 } 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_precomp = WDSF_WRITE_CACHE_EN; 1632 else 1633 wdc_c.r_precomp = 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 void 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; 1656 memset(&wdc_c, 0, sizeof(struct wdc_command)); 1657 wdc_c.r_command = WDCC_FLUSHCACHE; 1658 wdc_c.r_st_bmask = WDCS_DRDY; 1659 wdc_c.r_st_pmask = WDCS_DRDY; 1660 wdc_c.flags = flags; 1661 wdc_c.timeout = 30000; /* 30s timeout */ 1662 if (wd->atabus->ata_exec_command(wd->drvp, &wdc_c) != WDC_COMPLETE) { 1663 printf("%s: flush cache command didn't complete\n", 1664 wd->sc_dev.dv_xname); 1665 } 1666 if (wdc_c.flags & AT_TIMEOU) { 1667 printf("%s: flush cache command timeout\n", 1668 wd->sc_dev.dv_xname); 1669 } 1670 if (wdc_c.flags & AT_DF) { 1671 printf("%s: flush cache command: drive fault\n", 1672 wd->sc_dev.dv_xname); 1673 } 1674 /* 1675 * Ignore error register, it shouldn't report anything else 1676 * than COMMAND ABORTED, which means the device doesn't support 1677 * flush cache 1678 */ 1679 } 1680 1681 void 1682 wd_shutdown(void *arg) 1683 { 1684 struct wd_softc *wd = arg; 1685 wd_flushcache(wd, AT_POLL); 1686 } 1687 1688 /* 1689 * Allocate space for a ioctl queue structure. Mostly taken from 1690 * scsipi_ioctl.c 1691 */ 1692 struct wd_ioctl * 1693 wi_get(void) 1694 { 1695 struct wd_ioctl *wi; 1696 int s; 1697 1698 wi = malloc(sizeof(struct wd_ioctl), M_TEMP, M_WAITOK|M_ZERO); 1699 simple_lock_init(&wi->wi_bp.b_interlock); 1700 s = splbio(); 1701 LIST_INSERT_HEAD(&wi_head, wi, wi_list); 1702 splx(s); 1703 return (wi); 1704 } 1705 1706 /* 1707 * Free an ioctl structure and remove it from our list 1708 */ 1709 1710 void 1711 wi_free(struct wd_ioctl *wi) 1712 { 1713 int s; 1714 1715 s = splbio(); 1716 LIST_REMOVE(wi, wi_list); 1717 splx(s); 1718 free(wi, M_TEMP); 1719 } 1720 1721 /* 1722 * Find a wd_ioctl structure based on the struct buf. 1723 */ 1724 1725 struct wd_ioctl * 1726 wi_find(struct buf *bp) 1727 { 1728 struct wd_ioctl *wi; 1729 int s; 1730 1731 s = splbio(); 1732 for (wi = wi_head.lh_first; wi != 0; wi = wi->wi_list.le_next) 1733 if (bp == &wi->wi_bp) 1734 break; 1735 splx(s); 1736 return (wi); 1737 } 1738 1739 /* 1740 * Ioctl pseudo strategy routine 1741 * 1742 * This is mostly stolen from scsipi_ioctl.c:scsistrategy(). What 1743 * happens here is: 1744 * 1745 * - wdioctl() queues a wd_ioctl structure. 1746 * 1747 * - wdioctl() calls physio/wdioctlstrategy based on whether or not 1748 * user space I/O is required. If physio() is called, physio() eventually 1749 * calls wdioctlstrategy(). 1750 * 1751 * - In either case, wdioctlstrategy() calls wd->atabus->ata_exec_command() 1752 * to perform the actual command 1753 * 1754 * The reason for the use of the pseudo strategy routine is because 1755 * when doing I/O to/from user space, physio _really_ wants to be in 1756 * the loop. We could put the entire buffer into the ioctl request 1757 * structure, but that won't scale if we want to do things like download 1758 * microcode. 1759 */ 1760 1761 void 1762 wdioctlstrategy(struct buf *bp) 1763 { 1764 struct wd_ioctl *wi; 1765 struct wdc_command wdc_c; 1766 int error = 0; 1767 1768 wi = wi_find(bp); 1769 if (wi == NULL) { 1770 printf("user_strat: No ioctl\n"); 1771 error = EINVAL; 1772 goto bad; 1773 } 1774 1775 memset(&wdc_c, 0, sizeof(wdc_c)); 1776 1777 /* 1778 * Abort if physio broke up the transfer 1779 */ 1780 1781 if (bp->b_bcount != wi->wi_atareq.datalen) { 1782 printf("physio split wd ioctl request... cannot proceed\n"); 1783 error = EIO; 1784 goto bad; 1785 } 1786 1787 /* 1788 * Abort if we didn't get a buffer size that was a multiple of 1789 * our sector size (or was larger than NBBY) 1790 */ 1791 1792 if ((bp->b_bcount % wi->wi_softc->sc_dk.dk_label->d_secsize) != 0 || 1793 (bp->b_bcount / wi->wi_softc->sc_dk.dk_label->d_secsize) >= 1794 (1 << NBBY)) { 1795 error = EINVAL; 1796 goto bad; 1797 } 1798 1799 /* 1800 * Make sure a timeout was supplied in the ioctl request 1801 */ 1802 1803 if (wi->wi_atareq.timeout == 0) { 1804 error = EINVAL; 1805 goto bad; 1806 } 1807 1808 if (wi->wi_atareq.flags & ATACMD_READ) 1809 wdc_c.flags |= AT_READ; 1810 else if (wi->wi_atareq.flags & ATACMD_WRITE) 1811 wdc_c.flags |= AT_WRITE; 1812 1813 if (wi->wi_atareq.flags & ATACMD_READREG) 1814 wdc_c.flags |= AT_READREG; 1815 1816 wdc_c.flags |= AT_WAIT; 1817 1818 wdc_c.timeout = wi->wi_atareq.timeout; 1819 wdc_c.r_command = wi->wi_atareq.command; 1820 wdc_c.r_head = wi->wi_atareq.head & 0x0f; 1821 wdc_c.r_cyl = wi->wi_atareq.cylinder; 1822 wdc_c.r_sector = wi->wi_atareq.sec_num; 1823 wdc_c.r_count = wi->wi_atareq.sec_count; 1824 wdc_c.r_precomp = wi->wi_atareq.features; 1825 wdc_c.r_st_bmask = WDCS_DRDY; 1826 wdc_c.r_st_pmask = WDCS_DRDY; 1827 wdc_c.data = wi->wi_bp.b_data; 1828 wdc_c.bcount = wi->wi_bp.b_bcount; 1829 1830 if (wi->wi_softc->atabus->ata_exec_command(wi->wi_softc->drvp, &wdc_c) 1831 != WDC_COMPLETE) { 1832 wi->wi_atareq.retsts = ATACMD_ERROR; 1833 goto bad; 1834 } 1835 1836 if (wdc_c.flags & (AT_ERROR | AT_TIMEOU | AT_DF)) { 1837 if (wdc_c.flags & AT_ERROR) { 1838 wi->wi_atareq.retsts = ATACMD_ERROR; 1839 wi->wi_atareq.error = wdc_c.r_error; 1840 } else if (wdc_c.flags & AT_DF) 1841 wi->wi_atareq.retsts = ATACMD_DF; 1842 else 1843 wi->wi_atareq.retsts = ATACMD_TIMEOUT; 1844 } else { 1845 wi->wi_atareq.retsts = ATACMD_OK; 1846 if (wi->wi_atareq.flags & ATACMD_READREG) { 1847 wi->wi_atareq.head = wdc_c.r_head ; 1848 wi->wi_atareq.cylinder = wdc_c.r_cyl; 1849 wi->wi_atareq.sec_num = wdc_c.r_sector; 1850 wi->wi_atareq.sec_count = wdc_c.r_count; 1851 wi->wi_atareq.features = wdc_c.r_precomp; 1852 wi->wi_atareq.error = wdc_c.r_error; 1853 } 1854 } 1855 1856 bp->b_error = 0; 1857 biodone(bp); 1858 return; 1859 bad: 1860 bp->b_flags |= B_ERROR; 1861 bp->b_error = error; 1862 biodone(bp); 1863 } 1864
Indexes created Mon Sep 29 21:09:56 GMT 2025