wd.c revision 1.243
1 /* $NetBSD: wd.c,v 1.243 2003/04/15 18:27:26 darrenr 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 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 1.243 2003/04/15 18:27:26 darrenr 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 WAITTIME (4 * hz) /* time to wait for a completion */ 111 #define WDIORETRIES_SINGLE 4 /* number of retries before single-sector */ 112 #define WDIORETRIES 5 /* number of retries before giving up */ 113 #define RECOVERYTIME hz/2 /* time to wait before retrying a cmd */ 114 115 #define WDUNIT(dev) DISKUNIT(dev) 116 #define WDPART(dev) DISKPART(dev) 117 #define WDMINOR(unit, part) DISKMINOR(unit, part) 118 #define MAKEWDDEV(maj, unit, part) MAKEDISKDEV(maj, unit, part) 119 120 #define WDLABELDEV(dev) (MAKEWDDEV(major(dev), WDUNIT(dev), RAW_PART)) 121 122 #define DEBUG_INTR 0x01 123 #define DEBUG_XFERS 0x02 124 #define DEBUG_STATUS 0x04 125 #define DEBUG_FUNCS 0x08 126 #define DEBUG_PROBE 0x10 127 #ifdef WDCDEBUG 128 extern int wdcdebug_wd_mask; /* init'ed in ata_wdc.c */ 129 #define WDCDEBUG_PRINT(args, level) \ 130 if (wdcdebug_wd_mask & (level)) \ 131 printf args 132 #else 133 #define WDCDEBUG_PRINT(args, level) 134 #endif 135 136 int wdprobe __P((struct device *, struct cfdata *, void *)); 137 void wdattach __P((struct device *, struct device *, void *)); 138 int wddetach __P((struct device *, int)); 139 int wdactivate __P((struct device *, enum devact)); 140 int wdprint __P((void *, char *)); 141 void wdperror __P((const struct wd_softc *)); 142 143 CFATTACH_DECL(wd, sizeof(struct wd_softc), 144 wdprobe, wdattach, wddetach, wdactivate); 145 146 extern struct cfdriver wd_cd; 147 148 dev_type_open(wdopen); 149 dev_type_close(wdclose); 150 dev_type_read(wdread); 151 dev_type_write(wdwrite); 152 dev_type_ioctl(wdioctl); 153 dev_type_strategy(wdstrategy); 154 dev_type_dump(wddump); 155 dev_type_size(wdsize); 156 157 const struct bdevsw wd_bdevsw = { 158 wdopen, wdclose, wdstrategy, wdioctl, wddump, wdsize, D_DISK 159 }; 160 161 const struct cdevsw wd_cdevsw = { 162 wdopen, wdclose, wdread, wdwrite, wdioctl, 163 nostop, notty, nopoll, nommap, nokqfilter, D_DISK 164 }; 165 166 /* 167 * Glue necessary to hook WDCIOCCOMMAND into physio 168 */ 169 170 struct wd_ioctl { 171 LIST_ENTRY(wd_ioctl) wi_list; 172 struct buf wi_bp; 173 struct uio wi_uio; 174 struct iovec wi_iov; 175 atareq_t wi_atareq; 176 struct wd_softc *wi_softc; 177 }; 178 179 LIST_HEAD(, wd_ioctl) wi_head; 180 181 struct wd_ioctl *wi_find __P((struct buf *)); 182 void wi_free __P((struct wd_ioctl *)); 183 struct wd_ioctl *wi_get __P((void)); 184 void wdioctlstrategy __P((struct buf *)); 185 186 void wdgetdefaultlabel __P((struct wd_softc *, struct disklabel *)); 187 void wdgetdisklabel __P((struct wd_softc *)); 188 void wdstart __P((void *)); 189 void __wdstart __P((struct wd_softc*, struct buf *)); 190 void wdrestart __P((void*)); 191 int wd_get_params __P((struct wd_softc *, u_int8_t, struct ataparams *)); 192 void wd_flushcache __P((struct wd_softc *, int)); 193 void wd_shutdown __P((void*)); 194 195 struct dkdriver wddkdriver = { wdstrategy }; 196 197 #ifdef HAS_BAD144_HANDLING 198 static void bad144intern __P((struct wd_softc *)); 199 #endif 200 int wdlock __P((struct wd_softc *)); 201 void wdunlock __P((struct wd_softc *)); 202 203 #define WD_QUIRK_SPLIT_MOD15_WRITE 0x0001 /* must split certain writes */ 204 205 /* 206 * Quirk table for IDE drives. Put more-specific matches first, since 207 * a simple globbing routine is used for matching. 208 */ 209 static const struct wd_quirk { 210 const char *wdq_match; /* inquiry pattern to match */ 211 int wdq_quirks; /* drive quirks */ 212 } wd_quirk_table[] = { 213 /* 214 * Some Seagate S-ATA drives have a PHY which can get confused 215 * with the way data is packetized by some S-ATA controllers. 216 * 217 * The work-around is to split in two any write transfer who's 218 * sector count % 15 == 1 (assuming 512 byte sectors). 219 * 220 * XXX This is an incomplete list. There are at least a couple 221 * XXX more model numbers. If you have trouble with such transfers 222 * XXX (8K is the most common) on Seagate S-ATA drives, please 223 * XXX notify thorpej (at) netbsd.org. 224 */ 225 { "ST3120023AS", 226 WD_QUIRK_SPLIT_MOD15_WRITE }, 227 228 { NULL, 229 0 } 230 }; 231 232 static const struct wd_quirk * 233 wd_lookup_quirks(const char *name) 234 { 235 const struct wd_quirk *wdq; 236 const char *estr; 237 238 for (wdq = wd_quirk_table; wdq->wdq_match != NULL; wdq++) { 239 /* 240 * We only want exact matches (which include matches 241 * against globbing characters). 242 */ 243 if (pmatch(name, wdq->wdq_match, &estr) == 2) 244 return (wdq); 245 } 246 return (NULL); 247 } 248 249 int 250 wdprobe(parent, match, aux) 251 struct device *parent; 252 struct cfdata *match; 253 254 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[ATACF_CHANNEL] != ATACF_CHANNEL_DEFAULT && 264 match->cf_loc[ATACF_CHANNEL] != adev->adev_channel) 265 return 0; 266 267 if (match->cf_loc[ATACF_DRIVE] != ATACF_DRIVE_DEFAULT && 268 match->cf_loc[ATACF_DRIVE] != adev->adev_drv_data->drive) 269 return 0; 270 return 1; 271 } 272 273 void 274 wdattach(parent, self, aux) 275 struct device *parent, *self; 276 void *aux; 277 { 278 struct wd_softc *wd = (void *)self; 279 struct ata_device *adev= aux; 280 int i, blank; 281 char buf[41], pbuf[9], c, *p, *q; 282 const struct wd_quirk *wdq; 283 WDCDEBUG_PRINT(("wdattach\n"), DEBUG_FUNCS | DEBUG_PROBE); 284 285 callout_init(&wd->sc_restart_ch); 286 #ifdef NEW_BUFQ_STRATEGY 287 bufq_alloc(&wd->sc_q, BUFQ_READ_PRIO|BUFQ_SORT_RAWBLOCK); 288 #else 289 bufq_alloc(&wd->sc_q, BUFQ_DISKSORT|BUFQ_SORT_RAWBLOCK); 290 #endif 291 SLIST_INIT(&wd->sc_bslist); 292 293 wd->atabus = adev->adev_bustype; 294 wd->openings = adev->adev_openings; 295 wd->drvp = adev->adev_drv_data; 296 wd->wdc_softc = parent; 297 /* give back our softc to our caller */ 298 wd->drvp->drv_softc = &wd->sc_dev; 299 300 /* read our drive info */ 301 if (wd_get_params(wd, AT_POLL, &wd->sc_params) != 0) { 302 printf("%s: IDENTIFY failed\n", wd->sc_dev.dv_xname); 303 return; 304 } 305 306 for (blank = 0, p = wd->sc_params.atap_model, q = buf, i = 0; 307 i < sizeof(wd->sc_params.atap_model); i++) { 308 c = *p++; 309 if (c == '\0') 310 break; 311 if (c != ' ') { 312 if (blank) { 313 *q++ = ' '; 314 blank = 0; 315 } 316 *q++ = c; 317 } else 318 blank = 1; 319 } 320 *q++ = '\0'; 321 322 printf(": <%s>\n", buf); 323 324 wdq = wd_lookup_quirks(buf); 325 if (wdq != NULL) 326 wd->sc_quirks = wdq->wdq_quirks; 327 328 if ((wd->sc_params.atap_multi & 0xff) > 1) { 329 wd->sc_multi = wd->sc_params.atap_multi & 0xff; 330 } else { 331 wd->sc_multi = 1; 332 } 333 334 printf("%s: drive supports %d-sector PIO transfers,", 335 wd->sc_dev.dv_xname, wd->sc_multi); 336 337 /* 48-bit LBA addressing */ 338 if ((wd->sc_params.atap_cmd2_en & WDC_CAP_LBA48) != 0) 339 wd->sc_flags |= WDF_LBA48; 340 341 /* Prior to ATA-4, LBA was optional. */ 342 if ((wd->sc_params.atap_capabilities1 & WDC_CAP_LBA) != 0) 343 wd->sc_flags |= WDF_LBA; 344 #if 0 345 /* ATA-4 requires LBA. */ 346 if (wd->sc_params.atap_ataversion != 0xffff && 347 wd->sc_params.atap_ataversion >= WDC_VER_ATA4) 348 wd->sc_flags |= WDF_LBA; 349 #endif 350 351 if ((wd->sc_flags & WDF_LBA48) != 0) { 352 printf(" LBA48 addressing\n"); 353 wd->sc_capacity = 354 ((u_int64_t) wd->sc_params.__reserved6[11] << 48) | 355 ((u_int64_t) wd->sc_params.__reserved6[10] << 32) | 356 ((u_int64_t) wd->sc_params.__reserved6[9] << 16) | 357 ((u_int64_t) wd->sc_params.__reserved6[8] << 0); 358 } else if ((wd->sc_flags & WDF_LBA) != 0) { 359 printf(" LBA addressing\n"); 360 wd->sc_capacity = 361 (wd->sc_params.atap_capacity[1] << 16) | 362 wd->sc_params.atap_capacity[0]; 363 } else { 364 printf(" chs addressing\n"); 365 wd->sc_capacity = 366 wd->sc_params.atap_cylinders * 367 wd->sc_params.atap_heads * 368 wd->sc_params.atap_sectors; 369 } 370 format_bytes(pbuf, sizeof(pbuf), wd->sc_capacity * DEV_BSIZE); 371 printf("%s: %s, %d cyl, %d head, %d sec, " 372 "%d bytes/sect x %llu sectors\n", 373 self->dv_xname, pbuf, 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 printf("%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(self, act) 399 struct device *self; 400 enum devact act; 401 { 402 int rv = 0; 403 404 switch (act) { 405 case DVACT_ACTIVATE: 406 rv = EOPNOTSUPP; 407 break; 408 409 case DVACT_DEACTIVATE: 410 /* 411 * Nothing to do; we key off the device's DVF_ACTIVATE. 412 */ 413 break; 414 } 415 return (rv); 416 } 417 418 int 419 wddetach(self, flags) 420 struct device *self; 421 int flags; 422 { 423 struct wd_softc *sc = (struct wd_softc *)self; 424 struct buf *bp; 425 int s, bmaj, cmaj, i, mn; 426 427 /* Clean out the bad sector list */ 428 while (!SLIST_EMPTY(&sc->sc_bslist)) { 429 void *head = SLIST_FIRST(&sc->sc_bslist); 430 SLIST_REMOVE_HEAD(&sc->sc_bslist, dbs_next); 431 free(head, M_TEMP); 432 } 433 sc->sc_bscount = 0; 434 435 /* locate the major number */ 436 bmaj = bdevsw_lookup_major(&wd_bdevsw); 437 cmaj = cdevsw_lookup_major(&wd_cdevsw); 438 439 s = splbio(); 440 441 /* Kill off any queued buffers. */ 442 while ((bp = BUFQ_GET(&sc->sc_q)) != NULL) { 443 bp->b_error = EIO; 444 bp->b_flags |= B_ERROR; 445 bp->b_resid = bp->b_bcount; 446 biodone(bp); 447 } 448 449 bufq_free(&sc->sc_q); 450 451 splx(s); 452 453 /* Nuke the vnodes for any open instances. */ 454 for (i = 0; i < MAXPARTITIONS; i++) { 455 mn = WDMINOR(self->dv_unit, i); 456 vdevgone(bmaj, mn, mn, VBLK); 457 vdevgone(cmaj, mn, mn, VCHR); 458 } 459 460 /* Detach disk. */ 461 disk_detach(&sc->sc_dk); 462 463 /* Get rid of the shutdown hook. */ 464 if (sc->sc_sdhook != NULL) 465 shutdownhook_disestablish(sc->sc_sdhook); 466 467 #if NRND > 0 468 /* Unhook the entropy source. */ 469 rnd_detach_source(&sc->rnd_source); 470 #endif 471 472 return (0); 473 } 474 475 /* 476 * Read/write routine for a buffer. Validates the arguments and schedules the 477 * transfer. Does not wait for the transfer to complete. 478 */ 479 void 480 wdstrategy(bp) 481 struct buf *bp; 482 { 483 struct wd_softc *wd = device_lookup(&wd_cd, WDUNIT(bp->b_dev)); 484 struct disklabel *lp = wd->sc_dk.dk_label; 485 daddr_t blkno; 486 int s; 487 488 WDCDEBUG_PRINT(("wdstrategy (%s)\n", wd->sc_dev.dv_xname), 489 DEBUG_XFERS); 490 491 /* Valid request? */ 492 if (bp->b_blkno < 0 || 493 (bp->b_bcount % lp->d_secsize) != 0 || 494 (bp->b_bcount / lp->d_secsize) >= (1 << NBBY)) { 495 bp->b_error = EINVAL; 496 goto bad; 497 } 498 499 /* If device invalidated (e.g. media change, door open), error. */ 500 if ((wd->sc_flags & WDF_LOADED) == 0) { 501 bp->b_error = EIO; 502 goto bad; 503 } 504 505 /* If it's a null transfer, return immediately. */ 506 if (bp->b_bcount == 0) 507 goto done; 508 509 /* 510 * Do bounds checking, adjust transfer. if error, process. 511 * If end of partition, just return. 512 */ 513 if (WDPART(bp->b_dev) == RAW_PART) { 514 if (bounds_check_with_mediasize(bp, DEV_BSIZE, 515 wd->sc_capacity) <= 0) 516 goto done; 517 } else { 518 if (bounds_check_with_label(bp, wd->sc_dk.dk_label, 519 (wd->sc_flags & (WDF_WLABEL|WDF_LABELLING)) != 0) <= 0) 520 goto done; 521 } 522 523 /* 524 * Now convert the block number to absolute and put it in 525 * terms of the device's logical block size. 526 */ 527 if (lp->d_secsize >= DEV_BSIZE) 528 blkno = bp->b_blkno / (lp->d_secsize / DEV_BSIZE); 529 else 530 blkno = bp->b_blkno * (DEV_BSIZE / lp->d_secsize); 531 532 if (WDPART(bp->b_dev) != RAW_PART) 533 blkno += lp->d_partitions[WDPART(bp->b_dev)].p_offset; 534 535 bp->b_rawblkno = blkno; 536 537 /* 538 * If the transfer about to be attempted contains only a block that 539 * is known to be bad then return an error for the transfer without 540 * even attempting to start a transfer up under the premis that we 541 * will just end up doing more retries for a transfer that will end 542 * up failing again. 543 * XXX:SMP - mutex required to protect with DIOCBSFLUSH 544 */ 545 if (__predict_false(!SLIST_EMPTY(&wd->sc_bslist))) { 546 struct disk_badsectors *dbs; 547 daddr_t maxblk = blkno + (bp->b_bcount / DEV_BSIZE) - 1; 548 549 SLIST_FOREACH(dbs, &wd->sc_bslist, dbs_next) 550 if ((dbs->dbs_min <= blkno && blkno <= dbs->dbs_max) || 551 (dbs->dbs_min <= maxblk && maxblk <= dbs->dbs_max) 552 goto bad; 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(arg) 574 void *arg; 575 { 576 struct wd_softc *wd = arg; 577 struct buf *bp = NULL; 578 579 WDCDEBUG_PRINT(("wdstart %s\n", wd->sc_dev.dv_xname), 580 DEBUG_XFERS); 581 while (wd->openings > 0) { 582 583 /* Is there a buf for us ? */ 584 if ((bp = BUFQ_GET(&wd->sc_q)) == NULL) 585 return; 586 587 /* 588 * Make the command. First lock the device 589 */ 590 wd->openings--; 591 592 wd->retries = 0; 593 __wdstart(wd, bp); 594 } 595 } 596 597 static void 598 wd_split_mod15_write(struct buf *bp) 599 { 600 struct buf *obp = bp->b_private; 601 struct wd_softc *sc = wd_cd.cd_devs[DISKUNIT(obp->b_dev)]; 602 603 if (__predict_false(bp->b_flags & B_ERROR) != 0) { 604 /* 605 * Propagate the error. If this was the first half of 606 * the original transfer, make sure to account for that 607 * in the residual. 608 */ 609 if (bp->b_data == obp->b_data) 610 bp->b_resid += bp->b_bcount; 611 goto done; 612 } 613 614 /* 615 * If this was the second half of the transfer, we're all done! 616 */ 617 if (bp->b_data != obp->b_data) 618 goto done; 619 620 /* 621 * Advance the pointer to the second half and issue that command 622 * using the same opening. 623 */ 624 bp->b_flags = obp->b_flags | B_CALL; 625 bp->b_data += bp->b_bcount; 626 bp->b_blkno += (bp->b_bcount / 512); 627 bp->b_rawblkno += (bp->b_bcount / 512); 628 __wdstart(sc, bp); 629 return; 630 631 done: 632 obp->b_flags |= (bp->b_flags & (B_EINTR|B_ERROR)); 633 obp->b_error = bp->b_error; 634 obp->b_resid = bp->b_resid; 635 pool_put(&bufpool, bp); 636 biodone(obp); 637 sc->openings++; 638 /* wddone() will call wdstart() */ 639 } 640 641 void 642 __wdstart(wd, bp) 643 struct wd_softc *wd; 644 struct buf *bp; 645 { 646 647 /* 648 * Deal with the "split mod15 write" quirk. We just divide the 649 * transfer in two, doing the first half and then then second half 650 * with the same command opening. 651 * 652 * Note we MUST do this here, because we can't let insertion 653 * into the bufq cause the transfers to be re-merged. 654 */ 655 if (__predict_false((wd->sc_quirks & WD_QUIRK_SPLIT_MOD15_WRITE) != 0 && 656 (bp->b_flags & B_READ) == 0 && 657 bp->b_bcount > 512 && 658 ((bp->b_bcount / 512) % 15) == 1)) { 659 struct buf *nbp; 660 661 /* already at splbio */ 662 nbp = pool_get(&bufpool, PR_NOWAIT); 663 if (__predict_false(nbp == NULL)) { 664 /* No memory -- fail the iop. */ 665 bp->b_error = ENOMEM; 666 bp->b_flags |= B_ERROR; 667 bp->b_resid = bp->b_bcount; 668 biodone(bp); 669 wd->openings++; 670 return; 671 } 672 673 BUF_INIT(nbp); 674 nbp->b_error = 0; 675 nbp->b_proc = bp->b_proc; 676 nbp->b_vp = NULLVP; 677 nbp->b_dev = bp->b_dev; 678 679 nbp->b_bcount = bp->b_bcount / 2; 680 nbp->b_bufsize = bp->b_bcount / 2; 681 nbp->b_data = bp->b_data; 682 683 nbp->b_blkno = bp->b_blkno; 684 nbp->b_rawblkno = bp->b_rawblkno; 685 686 nbp->b_flags = bp->b_flags | B_CALL; 687 nbp->b_iodone = wd_split_mod15_write; 688 689 /* Put ptr to orig buf in b_private and use new buf */ 690 nbp->b_private = bp; 691 bp = nbp; 692 } 693 694 wd->sc_wdc_bio.blkno = bp->b_rawblkno; 695 wd->sc_wdc_bio.blkdone =0; 696 wd->sc_bp = bp; 697 /* 698 * If we're retrying, retry in single-sector mode. This will give us 699 * the sector number of the problem, and will eventually allow the 700 * transfer to succeed. 701 */ 702 if (wd->sc_multi == 1 || wd->retries >= WDIORETRIES_SINGLE) 703 wd->sc_wdc_bio.flags = ATA_SINGLE; 704 else 705 wd->sc_wdc_bio.flags = 0; 706 if (wd->sc_flags & WDF_LBA48) 707 wd->sc_wdc_bio.flags |= ATA_LBA48; 708 if (wd->sc_flags & WDF_LBA) 709 wd->sc_wdc_bio.flags |= ATA_LBA; 710 if (bp->b_flags & B_READ) 711 wd->sc_wdc_bio.flags |= ATA_READ; 712 wd->sc_wdc_bio.bcount = bp->b_bcount; 713 wd->sc_wdc_bio.databuf = bp->b_data; 714 /* Instrumentation. */ 715 disk_busy(&wd->sc_dk); 716 switch (wd->atabus->ata_bio(wd->drvp, &wd->sc_wdc_bio)) { 717 case WDC_TRY_AGAIN: 718 callout_reset(&wd->sc_restart_ch, hz, wdrestart, wd); 719 break; 720 case WDC_QUEUED: 721 case WDC_COMPLETE: 722 break; 723 default: 724 panic("__wdstart: bad return code from ata_bio()"); 725 } 726 } 727 728 void 729 wddone(v) 730 void *v; 731 { 732 struct wd_softc *wd = v; 733 struct buf *bp = wd->sc_bp; 734 const char *errmsg; 735 int do_perror = 0; 736 WDCDEBUG_PRINT(("wddone %s\n", wd->sc_dev.dv_xname), 737 DEBUG_XFERS); 738 739 if (bp == NULL) 740 return; 741 bp->b_resid = wd->sc_wdc_bio.bcount; 742 switch (wd->sc_wdc_bio.error) { 743 case ERR_DMA: 744 errmsg = "DMA error"; 745 goto retry; 746 case ERR_DF: 747 errmsg = "device fault"; 748 goto retry; 749 case TIMEOUT: 750 errmsg = "device timeout"; 751 goto retry; 752 case ERROR: 753 /* Don't care about media change bits */ 754 if (wd->sc_wdc_bio.r_error != 0 && 755 (wd->sc_wdc_bio.r_error & ~(WDCE_MC | WDCE_MCR)) == 0) 756 goto noerror; 757 errmsg = "error"; 758 do_perror = 1; 759 retry: /* Just reset and retry. Can we do more ? */ 760 wd->atabus->ata_reset_channel(wd->drvp); 761 diskerr(bp, "wd", errmsg, LOG_PRINTF, 762 wd->sc_wdc_bio.blkdone, wd->sc_dk.dk_label); 763 if (wd->retries < WDIORETRIES) 764 printf(", retrying\n"); 765 if (do_perror) 766 wdperror(wd); 767 if (wd->retries < WDIORETRIES) { 768 wd->retries++; 769 callout_reset(&wd->sc_restart_ch, RECOVERYTIME, 770 wdrestart, wd); 771 return; 772 } 773 printf("\n"); 774 775 /* 776 * Not all errors indicate a failed block but those that do, 777 * put the block on the bad-block list for the device. Only 778 * do this for reads because the drive should do it for writes, 779 * itself, according to Manuel. 780 */ 781 if ((bp->b_flags & B_READ) && 782 ((wd->drvp->ata_vers >= 4 && wd->sc_wdc_bio.r_error & 64) || 783 (wd->drvp->ata_vers < 4 && wd->sc_wdc_bio.r_error & 192))) { 784 struct disk_badsectors *dbs; 785 786 dbs = malloc(sizeof *dbs, M_TEMP, M_WAITOK); 787 dbs->dbs_min = bp->b_rawblkno; 788 dbs->dbs_max = dbs->dbs_min + bp->b_bcount - 1; 789 microtime(&dbs->dbs_failedat); 790 SLIST_INSERT_HEAD(&wd->sc_bslist, dbs, dbs_next); 791 wd->sc_bscount++; 792 } 793 794 bp->b_flags |= B_ERROR; 795 bp->b_error = EIO; 796 break; 797 case NOERROR: 798 noerror: if ((wd->sc_wdc_bio.flags & ATA_CORR) || wd->retries > 0) 799 printf("%s: soft error (corrected)\n", 800 wd->sc_dev.dv_xname); 801 break; 802 case ERR_NODEV: 803 bp->b_flags |= B_ERROR; 804 bp->b_error = EIO; 805 break; 806 } 807 disk_unbusy(&wd->sc_dk, (bp->b_bcount - bp->b_resid), 808 (bp->b_flags & B_READ)); 809 #if NRND > 0 810 rnd_add_uint32(&wd->rnd_source, bp->b_blkno); 811 #endif 812 /* XXX Yuck, but we don't want to increment openings in this case */ 813 if (__predict_false((bp->b_flags & B_CALL) != 0 && 814 bp->b_iodone == wd_split_mod15_write)) 815 biodone(bp); 816 else { 817 biodone(bp); 818 wd->openings++; 819 } 820 wdstart(wd); 821 } 822 823 void 824 wdrestart(v) 825 void *v; 826 { 827 struct wd_softc *wd = v; 828 struct buf *bp = wd->sc_bp; 829 int s; 830 WDCDEBUG_PRINT(("wdrestart %s\n", wd->sc_dev.dv_xname), 831 DEBUG_XFERS); 832 833 s = splbio(); 834 __wdstart(v, bp); 835 splx(s); 836 } 837 838 int 839 wdread(dev, uio, flags) 840 dev_t dev; 841 struct uio *uio; 842 int flags; 843 { 844 845 WDCDEBUG_PRINT(("wdread\n"), DEBUG_XFERS); 846 return (physio(wdstrategy, NULL, dev, B_READ, minphys, uio)); 847 } 848 849 int 850 wdwrite(dev, uio, flags) 851 dev_t dev; 852 struct uio *uio; 853 int flags; 854 { 855 856 WDCDEBUG_PRINT(("wdwrite\n"), DEBUG_XFERS); 857 return (physio(wdstrategy, NULL, dev, B_WRITE, minphys, uio)); 858 } 859 860 /* 861 * Wait interruptibly for an exclusive lock. 862 * 863 * XXX 864 * Several drivers do this; it should be abstracted and made MP-safe. 865 */ 866 int 867 wdlock(wd) 868 struct wd_softc *wd; 869 { 870 int error; 871 int s; 872 873 WDCDEBUG_PRINT(("wdlock\n"), DEBUG_FUNCS); 874 875 s = splbio(); 876 877 while ((wd->sc_flags & WDF_LOCKED) != 0) { 878 wd->sc_flags |= WDF_WANTED; 879 if ((error = tsleep(wd, PRIBIO | PCATCH, 880 "wdlck", 0)) != 0) { 881 splx(s); 882 return error; 883 } 884 } 885 wd->sc_flags |= WDF_LOCKED; 886 splx(s); 887 return 0; 888 } 889 890 /* 891 * Unlock and wake up any waiters. 892 */ 893 void 894 wdunlock(wd) 895 struct wd_softc *wd; 896 { 897 898 WDCDEBUG_PRINT(("wdunlock\n"), DEBUG_FUNCS); 899 900 wd->sc_flags &= ~WDF_LOCKED; 901 if ((wd->sc_flags & WDF_WANTED) != 0) { 902 wd->sc_flags &= ~WDF_WANTED; 903 wakeup(wd); 904 } 905 } 906 907 int 908 wdopen(dev, flag, fmt, p) 909 dev_t dev; 910 int flag, fmt; 911 struct proc *p; 912 { 913 struct wd_softc *wd; 914 int part, error; 915 916 WDCDEBUG_PRINT(("wdopen\n"), DEBUG_FUNCS); 917 wd = device_lookup(&wd_cd, WDUNIT(dev)); 918 if (wd == NULL) 919 return (ENXIO); 920 921 /* 922 * If this is the first open of this device, add a reference 923 * to the adapter. 924 */ 925 if (wd->sc_dk.dk_openmask == 0 && 926 (error = wd->atabus->ata_addref(wd->drvp)) != 0) 927 return (error); 928 929 if ((error = wdlock(wd)) != 0) 930 goto bad4; 931 932 if (wd->sc_dk.dk_openmask != 0) { 933 /* 934 * If any partition is open, but the disk has been invalidated, 935 * disallow further opens. 936 */ 937 if ((wd->sc_flags & WDF_LOADED) == 0) { 938 error = EIO; 939 goto bad3; 940 } 941 } else { 942 if ((wd->sc_flags & WDF_LOADED) == 0) { 943 wd->sc_flags |= WDF_LOADED; 944 945 /* Load the physical device parameters. */ 946 wd_get_params(wd, AT_WAIT, &wd->sc_params); 947 948 /* Load the partition info if not already loaded. */ 949 wdgetdisklabel(wd); 950 } 951 } 952 953 part = WDPART(dev); 954 955 /* Check that the partition exists. */ 956 if (part != RAW_PART && 957 (part >= wd->sc_dk.dk_label->d_npartitions || 958 wd->sc_dk.dk_label->d_partitions[part].p_fstype == FS_UNUSED)) { 959 error = ENXIO; 960 goto bad; 961 } 962 963 /* Insure only one open at a time. */ 964 switch (fmt) { 965 case S_IFCHR: 966 wd->sc_dk.dk_copenmask |= (1 << part); 967 break; 968 case S_IFBLK: 969 wd->sc_dk.dk_bopenmask |= (1 << part); 970 break; 971 } 972 wd->sc_dk.dk_openmask = 973 wd->sc_dk.dk_copenmask | wd->sc_dk.dk_bopenmask; 974 975 wdunlock(wd); 976 return 0; 977 978 bad: 979 if (wd->sc_dk.dk_openmask == 0) { 980 } 981 982 bad3: 983 wdunlock(wd); 984 bad4: 985 if (wd->sc_dk.dk_openmask == 0) 986 wd->atabus->ata_delref(wd->drvp); 987 return error; 988 } 989 990 int 991 wdclose(dev, flag, fmt, p) 992 dev_t dev; 993 int flag, fmt; 994 struct proc *p; 995 { 996 struct wd_softc *wd = device_lookup(&wd_cd, WDUNIT(dev)); 997 int part = WDPART(dev); 998 int error; 999 1000 WDCDEBUG_PRINT(("wdclose\n"), DEBUG_FUNCS); 1001 if ((error = wdlock(wd)) != 0) 1002 return error; 1003 1004 switch (fmt) { 1005 case S_IFCHR: 1006 wd->sc_dk.dk_copenmask &= ~(1 << part); 1007 break; 1008 case S_IFBLK: 1009 wd->sc_dk.dk_bopenmask &= ~(1 << part); 1010 break; 1011 } 1012 wd->sc_dk.dk_openmask = 1013 wd->sc_dk.dk_copenmask | wd->sc_dk.dk_bopenmask; 1014 1015 if (wd->sc_dk.dk_openmask == 0) { 1016 wd_flushcache(wd, AT_WAIT); 1017 /* XXXX Must wait for I/O to complete! */ 1018 1019 if (! (wd->sc_flags & WDF_KLABEL)) 1020 wd->sc_flags &= ~WDF_LOADED; 1021 1022 wd->atabus->ata_delref(wd->drvp); 1023 } 1024 1025 wdunlock(wd); 1026 return 0; 1027 } 1028 1029 void 1030 wdgetdefaultlabel(wd, lp) 1031 struct wd_softc *wd; 1032 struct disklabel *lp; 1033 { 1034 1035 WDCDEBUG_PRINT(("wdgetdefaultlabel\n"), DEBUG_FUNCS); 1036 memset(lp, 0, sizeof(struct disklabel)); 1037 1038 lp->d_secsize = DEV_BSIZE; 1039 lp->d_ntracks = wd->sc_params.atap_heads; 1040 lp->d_nsectors = wd->sc_params.atap_sectors; 1041 lp->d_ncylinders = wd->sc_params.atap_cylinders; 1042 lp->d_secpercyl = lp->d_ntracks * lp->d_nsectors; 1043 1044 if (strcmp(wd->sc_params.atap_model, "ST506") == 0) 1045 lp->d_type = DTYPE_ST506; 1046 else 1047 lp->d_type = DTYPE_ESDI; 1048 1049 strncpy(lp->d_typename, wd->sc_params.atap_model, 16); 1050 strncpy(lp->d_packname, "fictitious", 16); 1051 if (wd->sc_capacity > UINT32_MAX) 1052 lp->d_secperunit = UINT32_MAX; 1053 else 1054 lp->d_secperunit = wd->sc_capacity; 1055 lp->d_rpm = 3600; 1056 lp->d_interleave = 1; 1057 lp->d_flags = 0; 1058 1059 lp->d_partitions[RAW_PART].p_offset = 0; 1060 lp->d_partitions[RAW_PART].p_size = 1061 lp->d_secperunit * (lp->d_secsize / DEV_BSIZE); 1062 lp->d_partitions[RAW_PART].p_fstype = FS_UNUSED; 1063 lp->d_npartitions = RAW_PART + 1; 1064 1065 lp->d_magic = DISKMAGIC; 1066 lp->d_magic2 = DISKMAGIC; 1067 lp->d_checksum = dkcksum(lp); 1068 } 1069 1070 /* 1071 * Fabricate a default disk label, and try to read the correct one. 1072 */ 1073 void 1074 wdgetdisklabel(wd) 1075 struct wd_softc *wd; 1076 { 1077 struct disklabel *lp = wd->sc_dk.dk_label; 1078 char *errstring; 1079 1080 WDCDEBUG_PRINT(("wdgetdisklabel\n"), DEBUG_FUNCS); 1081 1082 memset(wd->sc_dk.dk_cpulabel, 0, sizeof(struct cpu_disklabel)); 1083 1084 wdgetdefaultlabel(wd, lp); 1085 1086 wd->sc_badsect[0] = -1; 1087 1088 if (wd->drvp->state > RECAL) 1089 wd->drvp->drive_flags |= DRIVE_RESET; 1090 errstring = readdisklabel(MAKEWDDEV(0, wd->sc_dev.dv_unit, RAW_PART), 1091 wdstrategy, lp, wd->sc_dk.dk_cpulabel); 1092 if (errstring) { 1093 /* 1094 * This probably happened because the drive's default 1095 * geometry doesn't match the DOS geometry. We 1096 * assume the DOS geometry is now in the label and try 1097 * again. XXX This is a kluge. 1098 */ 1099 if (wd->drvp->state > RECAL) 1100 wd->drvp->drive_flags |= DRIVE_RESET; 1101 errstring = readdisklabel(MAKEWDDEV(0, wd->sc_dev.dv_unit, 1102 RAW_PART), wdstrategy, lp, wd->sc_dk.dk_cpulabel); 1103 } 1104 if (errstring) { 1105 printf("%s: %s\n", wd->sc_dev.dv_xname, errstring); 1106 return; 1107 } 1108 1109 if (wd->drvp->state > RECAL) 1110 wd->drvp->drive_flags |= DRIVE_RESET; 1111 #ifdef HAS_BAD144_HANDLING 1112 if ((lp->d_flags & D_BADSECT) != 0) 1113 bad144intern(wd); 1114 #endif 1115 } 1116 1117 void 1118 wdperror(wd) 1119 const struct wd_softc *wd; 1120 { 1121 static const char *const errstr0_3[] = {"address mark not found", 1122 "track 0 not found", "aborted command", "media change requested", 1123 "id not found", "media changed", "uncorrectable data error", 1124 "bad block detected"}; 1125 static const char *const errstr4_5[] = { 1126 "obsolete (address mark not found)", 1127 "no media/write protected", "aborted command", 1128 "media change requested", "id not found", "media changed", 1129 "uncorrectable data error", "interface CRC error"}; 1130 const char *const *errstr; 1131 int i; 1132 char *sep = ""; 1133 1134 const char *devname = wd->sc_dev.dv_xname; 1135 struct ata_drive_datas *drvp = wd->drvp; 1136 int errno = wd->sc_wdc_bio.r_error; 1137 1138 if (drvp->ata_vers >= 4) 1139 errstr = errstr4_5; 1140 else 1141 errstr = errstr0_3; 1142 1143 printf("%s: (", devname); 1144 1145 if (errno == 0) 1146 printf("error not notified"); 1147 1148 for (i = 0; i < 8; i++) { 1149 if (errno & (1 << i)) { 1150 printf("%s%s", sep, errstr[i]); 1151 sep = ", "; 1152 } 1153 } 1154 printf(")\n"); 1155 } 1156 1157 int 1158 wdioctl(dev, xfer, addr, flag, p) 1159 dev_t dev; 1160 u_long xfer; 1161 caddr_t addr; 1162 int flag; 1163 struct proc *p; 1164 { 1165 struct wd_softc *wd = device_lookup(&wd_cd, WDUNIT(dev)); 1166 int error = 0; 1167 #ifdef __HAVE_OLD_DISKLABEL 1168 struct disklabel *newlabel = NULL; 1169 #endif 1170 1171 WDCDEBUG_PRINT(("wdioctl\n"), DEBUG_FUNCS); 1172 1173 if ((wd->sc_flags & WDF_LOADED) == 0) 1174 return EIO; 1175 1176 switch (xfer) { 1177 #ifdef HAS_BAD144_HANDLING 1178 case DIOCSBAD: 1179 if ((flag & FWRITE) == 0) 1180 return EBADF; 1181 wd->sc_dk.dk_cpulabel->bad = *(struct dkbad *)addr; 1182 wd->sc_dk.dk_label->d_flags |= D_BADSECT; 1183 bad144intern(wd); 1184 return 0; 1185 #endif 1186 1187 case DIOCBSLIST : 1188 { 1189 u_int32_t count, missing, skip; 1190 struct disk_badsecinfo dbsi; 1191 struct disk_badsectors *dbs; 1192 size_t available; 1193 caddr_t laddr; 1194 1195 dbsi = *(struct disk_badsecinfo *)addr; 1196 missing = wd->sc_bscount; 1197 count = 0; 1198 available = dbsi.dbsi_bufsize; 1199 skip = dbsi.dbsi_skip; 1200 laddr = dbsi.dbsi_buffer; 1201 1202 /* 1203 * We start this loop with the expectation that all of the 1204 * entries will be missed and decrement this counter each 1205 * time we either skip over one (already copied out) or 1206 * we actually copy it back to user space. The structs 1207 * holding the bad sector information are copied directly 1208 * back to user space whilst the summary is returned via 1209 * the struct passed in via the ioctl. 1210 */ 1211 SLIST_FOREACH(dbs, &wd->sc_bslist, dbs_next) { 1212 if (skip > 0) { 1213 missing--; 1214 skip--; 1215 continue; 1216 } 1217 if (available < sizeof(*dbs)) 1218 break; 1219 available -= sizeof(*dbs); 1220 copyout(dbs, laddr, sizeof(*dbs)); 1221 laddr += sizeof(*dbs); 1222 missing--; 1223 count++; 1224 } 1225 dbsi.dbsi_left = missing; 1226 dbsi.dbsi_copied = count; 1227 *(struct disk_badsecinfo *)addr = dbsi; 1228 return 0; 1229 } 1230 1231 case DIOCBSFLUSH : 1232 /* Clean out the bad sector list */ 1233 while (!SLIST_EMPTY(&wd->sc_bslist)) { 1234 void *head = SLIST_FIRST(&wd->sc_bslist); 1235 SLIST_REMOVE_HEAD(&wd->sc_bslist, dbs_next); 1236 free(head, M_TEMP); 1237 } 1238 wd->sc_bscount = 0; 1239 return 0; 1240 1241 case DIOCGDINFO: 1242 *(struct disklabel *)addr = *(wd->sc_dk.dk_label); 1243 return 0; 1244 #ifdef __HAVE_OLD_DISKLABEL 1245 case ODIOCGDINFO: 1246 newlabel = malloc(sizeof *newlabel, M_TEMP, M_WAITOK); 1247 if (newlabel == NULL) 1248 return EIO; 1249 *newlabel = *(wd->sc_dk.dk_label); 1250 if (newlabel->d_npartitions <= OLDMAXPARTITIONS) 1251 memcpy(addr, newlabel, sizeof (struct olddisklabel)); 1252 else 1253 error = ENOTTY; 1254 free(newlabel, M_TEMP); 1255 return error; 1256 #endif 1257 1258 case DIOCGPART: 1259 ((struct partinfo *)addr)->disklab = wd->sc_dk.dk_label; 1260 ((struct partinfo *)addr)->part = 1261 &wd->sc_dk.dk_label->d_partitions[WDPART(dev)]; 1262 return 0; 1263 1264 case DIOCWDINFO: 1265 case DIOCSDINFO: 1266 #ifdef __HAVE_OLD_DISKLABEL 1267 case ODIOCWDINFO: 1268 case ODIOCSDINFO: 1269 #endif 1270 { 1271 struct disklabel *lp; 1272 1273 if ((flag & FWRITE) == 0) 1274 return EBADF; 1275 1276 #ifdef __HAVE_OLD_DISKLABEL 1277 if (xfer == ODIOCSDINFO || xfer == ODIOCWDINFO) { 1278 newlabel = malloc(sizeof *newlabel, M_TEMP, M_WAITOK); 1279 if (newlabel == NULL) 1280 return EIO; 1281 memset(newlabel, 0, sizeof newlabel); 1282 memcpy(newlabel, addr, sizeof (struct olddisklabel)); 1283 lp = newlabel; 1284 } else 1285 #endif 1286 lp = (struct disklabel *)addr; 1287 1288 if ((error = wdlock(wd)) != 0) 1289 goto bad; 1290 wd->sc_flags |= WDF_LABELLING; 1291 1292 error = setdisklabel(wd->sc_dk.dk_label, 1293 lp, /*wd->sc_dk.dk_openmask : */0, 1294 wd->sc_dk.dk_cpulabel); 1295 if (error == 0) { 1296 if (wd->drvp->state > RECAL) 1297 wd->drvp->drive_flags |= DRIVE_RESET; 1298 if (xfer == DIOCWDINFO 1299 #ifdef __HAVE_OLD_DISKLABEL 1300 || xfer == ODIOCWDINFO 1301 #endif 1302 ) 1303 error = writedisklabel(WDLABELDEV(dev), 1304 wdstrategy, wd->sc_dk.dk_label, 1305 wd->sc_dk.dk_cpulabel); 1306 } 1307 1308 wd->sc_flags &= ~WDF_LABELLING; 1309 wdunlock(wd); 1310 bad: 1311 #ifdef __HAVE_OLD_DISKLABEL 1312 if (newlabel != NULL) 1313 free(newlabel, M_TEMP); 1314 #endif 1315 return error; 1316 } 1317 1318 case DIOCKLABEL: 1319 if (*(int *)addr) 1320 wd->sc_flags |= WDF_KLABEL; 1321 else 1322 wd->sc_flags &= ~WDF_KLABEL; 1323 return 0; 1324 1325 case DIOCWLABEL: 1326 if ((flag & FWRITE) == 0) 1327 return EBADF; 1328 if (*(int *)addr) 1329 wd->sc_flags |= WDF_WLABEL; 1330 else 1331 wd->sc_flags &= ~WDF_WLABEL; 1332 return 0; 1333 1334 case DIOCGDEFLABEL: 1335 wdgetdefaultlabel(wd, (struct disklabel *)addr); 1336 return 0; 1337 #ifdef __HAVE_OLD_DISKLABEL 1338 case ODIOCGDEFLABEL: 1339 newlabel = malloc(sizeof *newlabel, M_TEMP, M_WAITOK); 1340 if (newlabel == NULL) 1341 return EIO; 1342 wdgetdefaultlabel(wd, newlabel); 1343 if (newlabel->d_npartitions <= OLDMAXPARTITIONS) 1344 memcpy(addr, &newlabel, sizeof (struct olddisklabel)); 1345 else 1346 error = ENOTTY; 1347 free(newlabel, M_TEMP); 1348 return error; 1349 #endif 1350 1351 #ifdef notyet 1352 case DIOCWFORMAT: 1353 if ((flag & FWRITE) == 0) 1354 return EBADF; 1355 { 1356 register struct format_op *fop; 1357 struct iovec aiov; 1358 struct uio auio; 1359 1360 fop = (struct format_op *)addr; 1361 aiov.iov_base = fop->df_buf; 1362 aiov.iov_len = fop->df_count; 1363 auio.uio_iov = &aiov; 1364 auio.uio_iovcnt = 1; 1365 auio.uio_resid = fop->df_count; 1366 auio.uio_segflg = 0; 1367 auio.uio_offset = 1368 fop->df_startblk * wd->sc_dk.dk_label->d_secsize; 1369 auio.uio_procp = p; 1370 error = physio(wdformat, NULL, dev, B_WRITE, minphys, 1371 &auio); 1372 fop->df_count -= auio.uio_resid; 1373 fop->df_reg[0] = wdc->sc_status; 1374 fop->df_reg[1] = wdc->sc_error; 1375 return error; 1376 } 1377 #endif 1378 1379 case ATAIOCCOMMAND: 1380 /* 1381 * Make sure this command is (relatively) safe first 1382 */ 1383 if ((((atareq_t *) addr)->flags & ATACMD_READ) == 0 && 1384 (flag & FWRITE) == 0) 1385 return (EBADF); 1386 { 1387 struct wd_ioctl *wi; 1388 atareq_t *atareq = (atareq_t *) addr; 1389 int error; 1390 1391 wi = wi_get(); 1392 wi->wi_softc = wd; 1393 wi->wi_atareq = *atareq; 1394 1395 if (atareq->datalen && atareq->flags & 1396 (ATACMD_READ | ATACMD_WRITE)) { 1397 wi->wi_iov.iov_base = atareq->databuf; 1398 wi->wi_iov.iov_len = atareq->datalen; 1399 wi->wi_uio.uio_iov = &wi->wi_iov; 1400 wi->wi_uio.uio_iovcnt = 1; 1401 wi->wi_uio.uio_resid = atareq->datalen; 1402 wi->wi_uio.uio_offset = 0; 1403 wi->wi_uio.uio_segflg = UIO_USERSPACE; 1404 wi->wi_uio.uio_rw = 1405 (atareq->flags & ATACMD_READ) ? B_READ : B_WRITE; 1406 wi->wi_uio.uio_procp = p; 1407 error = physio(wdioctlstrategy, &wi->wi_bp, dev, 1408 (atareq->flags & ATACMD_READ) ? B_READ : B_WRITE, 1409 minphys, &wi->wi_uio); 1410 } else { 1411 /* No need to call physio if we don't have any 1412 user data */ 1413 wi->wi_bp.b_flags = 0; 1414 wi->wi_bp.b_data = 0; 1415 wi->wi_bp.b_bcount = 0; 1416 wi->wi_bp.b_dev = 0; 1417 wi->wi_bp.b_proc = p; 1418 wdioctlstrategy(&wi->wi_bp); 1419 error = wi->wi_bp.b_error; 1420 } 1421 *atareq = wi->wi_atareq; 1422 wi_free(wi); 1423 return(error); 1424 } 1425 1426 default: 1427 return ENOTTY; 1428 } 1429 1430 #ifdef DIAGNOSTIC 1431 panic("wdioctl: impossible"); 1432 #endif 1433 } 1434 1435 #ifdef B_FORMAT 1436 int 1437 wdformat(struct buf *bp) 1438 { 1439 1440 bp->b_flags |= B_FORMAT; 1441 return wdstrategy(bp); 1442 } 1443 #endif 1444 1445 int 1446 wdsize(dev) 1447 dev_t dev; 1448 { 1449 struct wd_softc *wd; 1450 int part, omask; 1451 int size; 1452 1453 WDCDEBUG_PRINT(("wdsize\n"), DEBUG_FUNCS); 1454 1455 wd = device_lookup(&wd_cd, WDUNIT(dev)); 1456 if (wd == NULL) 1457 return (-1); 1458 1459 part = WDPART(dev); 1460 omask = wd->sc_dk.dk_openmask & (1 << part); 1461 1462 if (omask == 0 && wdopen(dev, 0, S_IFBLK, NULL) != 0) 1463 return (-1); 1464 if (wd->sc_dk.dk_label->d_partitions[part].p_fstype != FS_SWAP) 1465 size = -1; 1466 else 1467 size = wd->sc_dk.dk_label->d_partitions[part].p_size * 1468 (wd->sc_dk.dk_label->d_secsize / DEV_BSIZE); 1469 if (omask == 0 && wdclose(dev, 0, S_IFBLK, NULL) != 0) 1470 return (-1); 1471 return (size); 1472 } 1473 1474 /* #define WD_DUMP_NOT_TRUSTED if you just want to watch */ 1475 static int wddoingadump = 0; 1476 static int wddumprecalibrated = 0; 1477 static int wddumpmulti = 1; 1478 1479 /* 1480 * Dump core after a system crash. 1481 */ 1482 int 1483 wddump(dev, blkno, va, size) 1484 dev_t dev; 1485 daddr_t blkno; 1486 caddr_t va; 1487 size_t size; 1488 { 1489 struct wd_softc *wd; /* disk unit to do the I/O */ 1490 struct disklabel *lp; /* disk's disklabel */ 1491 int part, err; 1492 int nblks; /* total number of sectors left to write */ 1493 1494 /* Check if recursive dump; if so, punt. */ 1495 if (wddoingadump) 1496 return EFAULT; 1497 wddoingadump = 1; 1498 1499 wd = device_lookup(&wd_cd, WDUNIT(dev)); 1500 if (wd == NULL) 1501 return (ENXIO); 1502 1503 part = WDPART(dev); 1504 1505 /* Convert to disk sectors. Request must be a multiple of size. */ 1506 lp = wd->sc_dk.dk_label; 1507 if ((size % lp->d_secsize) != 0) 1508 return EFAULT; 1509 nblks = size / lp->d_secsize; 1510 blkno = blkno / (lp->d_secsize / DEV_BSIZE); 1511 1512 /* Check transfer bounds against partition size. */ 1513 if ((blkno < 0) || ((blkno + nblks) > lp->d_partitions[part].p_size)) 1514 return EINVAL; 1515 1516 /* Offset block number to start of partition. */ 1517 blkno += lp->d_partitions[part].p_offset; 1518 1519 /* Recalibrate, if first dump transfer. */ 1520 if (wddumprecalibrated == 0) { 1521 wddumpmulti = wd->sc_multi; 1522 wddumprecalibrated = 1; 1523 wd->drvp->state = RESET; 1524 } 1525 1526 while (nblks > 0) { 1527 again: 1528 wd->sc_bp = NULL; 1529 wd->sc_wdc_bio.blkno = blkno; 1530 wd->sc_wdc_bio.flags = ATA_POLL; 1531 if (wddumpmulti == 1) 1532 wd->sc_wdc_bio.flags |= ATA_SINGLE; 1533 if (wd->sc_flags & WDF_LBA48) 1534 wd->sc_wdc_bio.flags |= ATA_LBA48; 1535 if (wd->sc_flags & WDF_LBA) 1536 wd->sc_wdc_bio.flags |= ATA_LBA; 1537 wd->sc_wdc_bio.bcount = 1538 min(nblks, wddumpmulti) * lp->d_secsize; 1539 wd->sc_wdc_bio.databuf = va; 1540 #ifndef WD_DUMP_NOT_TRUSTED 1541 switch (wd->atabus->ata_bio(wd->drvp, &wd->sc_wdc_bio)) { 1542 case WDC_TRY_AGAIN: 1543 panic("wddump: try again"); 1544 break; 1545 case WDC_QUEUED: 1546 panic("wddump: polled command has been queued"); 1547 break; 1548 case WDC_COMPLETE: 1549 break; 1550 } 1551 switch(wd->sc_wdc_bio.error) { 1552 case TIMEOUT: 1553 printf("wddump: device timed out"); 1554 err = EIO; 1555 break; 1556 case ERR_DF: 1557 printf("wddump: drive fault"); 1558 err = EIO; 1559 break; 1560 case ERR_DMA: 1561 printf("wddump: DMA error"); 1562 err = EIO; 1563 break; 1564 case ERROR: 1565 printf("wddump: "); 1566 wdperror(wd); 1567 err = EIO; 1568 break; 1569 case NOERROR: 1570 err = 0; 1571 break; 1572 default: 1573 panic("wddump: unknown error type"); 1574 } 1575 if (err != 0) { 1576 if (wddumpmulti != 1) { 1577 wddumpmulti = 1; /* retry in single-sector */ 1578 printf(", retrying\n"); 1579 goto again; 1580 } 1581 printf("\n"); 1582 return err; 1583 } 1584 #else /* WD_DUMP_NOT_TRUSTED */ 1585 /* Let's just talk about this first... */ 1586 printf("wd%d: dump addr 0x%x, cylin %d, head %d, sector %d\n", 1587 unit, va, cylin, head, sector); 1588 delay(500 * 1000); /* half a second */ 1589 #endif 1590 1591 /* update block count */ 1592 nblks -= min(nblks, wddumpmulti); 1593 blkno += min(nblks, wddumpmulti); 1594 va += min(nblks, wddumpmulti) * lp->d_secsize; 1595 } 1596 1597 wddoingadump = 0; 1598 return 0; 1599 } 1600 1601 #ifdef HAS_BAD144_HANDLING 1602 /* 1603 * Internalize the bad sector table. 1604 */ 1605 void 1606 bad144intern(wd) 1607 struct wd_softc *wd; 1608 { 1609 struct dkbad *bt = &wd->sc_dk.dk_cpulabel->bad; 1610 struct disklabel *lp = wd->sc_dk.dk_label; 1611 int i = 0; 1612 1613 WDCDEBUG_PRINT(("bad144intern\n"), DEBUG_XFERS); 1614 1615 for (; i < NBT_BAD; i++) { 1616 if (bt->bt_bad[i].bt_cyl == 0xffff) 1617 break; 1618 wd->sc_badsect[i] = 1619 bt->bt_bad[i].bt_cyl * lp->d_secpercyl + 1620 (bt->bt_bad[i].bt_trksec >> 8) * lp->d_nsectors + 1621 (bt->bt_bad[i].bt_trksec & 0xff); 1622 } 1623 for (; i < NBT_BAD+1; i++) 1624 wd->sc_badsect[i] = -1; 1625 } 1626 #endif 1627 1628 int 1629 wd_get_params(wd, flags, params) 1630 struct wd_softc *wd; 1631 u_int8_t flags; 1632 struct ataparams *params; 1633 { 1634 switch (wd->atabus->ata_get_params(wd->drvp, flags, params)) { 1635 case CMD_AGAIN: 1636 return 1; 1637 case CMD_ERR: 1638 /* 1639 * We `know' there's a drive here; just assume it's old. 1640 * This geometry is only used to read the MBR and print a 1641 * (false) attach message. 1642 */ 1643 strncpy(params->atap_model, "ST506", 1644 sizeof params->atap_model); 1645 params->atap_config = ATA_CFG_FIXED; 1646 params->atap_cylinders = 1024; 1647 params->atap_heads = 8; 1648 params->atap_sectors = 17; 1649 params->atap_multi = 1; 1650 params->atap_capabilities1 = params->atap_capabilities2 = 0; 1651 wd->drvp->ata_vers = -1; /* Mark it as pre-ATA */ 1652 return 0; 1653 case CMD_OK: 1654 return 0; 1655 default: 1656 panic("wd_get_params: bad return code from ata_get_params"); 1657 /* NOTREACHED */ 1658 } 1659 } 1660 1661 void 1662 wd_flushcache(wd, flags) 1663 struct wd_softc *wd; 1664 int flags; 1665 { 1666 struct wdc_command wdc_c; 1667 1668 if (wd->drvp->ata_vers < 4) /* WDCC_FLUSHCACHE is here since ATA-4 */ 1669 return; 1670 memset(&wdc_c, 0, sizeof(struct wdc_command)); 1671 wdc_c.r_command = WDCC_FLUSHCACHE; 1672 wdc_c.r_st_bmask = WDCS_DRDY; 1673 wdc_c.r_st_pmask = WDCS_DRDY; 1674 wdc_c.flags = flags; 1675 wdc_c.timeout = 30000; /* 30s timeout */ 1676 if (wd->atabus->ata_exec_command(wd->drvp, &wdc_c) != WDC_COMPLETE) { 1677 printf("%s: flush cache command didn't complete\n", 1678 wd->sc_dev.dv_xname); 1679 } 1680 if (wdc_c.flags & AT_TIMEOU) { 1681 printf("%s: flush cache command timeout\n", 1682 wd->sc_dev.dv_xname); 1683 } 1684 if (wdc_c.flags & AT_DF) { 1685 printf("%s: flush cache command: drive fault\n", 1686 wd->sc_dev.dv_xname); 1687 } 1688 /* 1689 * Ignore error register, it shouldn't report anything else 1690 * than COMMAND ABORTED, which means the device doesn't support 1691 * flush cache 1692 */ 1693 } 1694 1695 void 1696 wd_shutdown(arg) 1697 void *arg; 1698 { 1699 struct wd_softc *wd = arg; 1700 wd_flushcache(wd, AT_POLL); 1701 } 1702 1703 /* 1704 * Allocate space for a ioctl queue structure. Mostly taken from 1705 * scsipi_ioctl.c 1706 */ 1707 struct wd_ioctl * 1708 wi_get() 1709 { 1710 struct wd_ioctl *wi; 1711 int s; 1712 1713 wi = malloc(sizeof(struct wd_ioctl), M_TEMP, M_WAITOK|M_ZERO); 1714 simple_lock_init(&wi->wi_bp.b_interlock); 1715 s = splbio(); 1716 LIST_INSERT_HEAD(&wi_head, wi, wi_list); 1717 splx(s); 1718 return (wi); 1719 } 1720 1721 /* 1722 * Free an ioctl structure and remove it from our list 1723 */ 1724 1725 void 1726 wi_free(wi) 1727 struct wd_ioctl *wi; 1728 { 1729 int s; 1730 1731 s = splbio(); 1732 LIST_REMOVE(wi, wi_list); 1733 splx(s); 1734 free(wi, M_TEMP); 1735 } 1736 1737 /* 1738 * Find a wd_ioctl structure based on the struct buf. 1739 */ 1740 1741 struct wd_ioctl * 1742 wi_find(bp) 1743 struct buf *bp; 1744 { 1745 struct wd_ioctl *wi; 1746 int s; 1747 1748 s = splbio(); 1749 for (wi = wi_head.lh_first; wi != 0; wi = wi->wi_list.le_next) 1750 if (bp == &wi->wi_bp) 1751 break; 1752 splx(s); 1753 return (wi); 1754 } 1755 1756 /* 1757 * Ioctl pseudo strategy routine 1758 * 1759 * This is mostly stolen from scsipi_ioctl.c:scsistrategy(). What 1760 * happens here is: 1761 * 1762 * - wdioctl() queues a wd_ioctl structure. 1763 * 1764 * - wdioctl() calls physio/wdioctlstrategy based on whether or not 1765 * user space I/O is required. If physio() is called, physio() eventually 1766 * calls wdioctlstrategy(). 1767 * 1768 * - In either case, wdioctlstrategy() calls wd->atabus->ata_exec_command() 1769 * to perform the actual command 1770 * 1771 * The reason for the use of the pseudo strategy routine is because 1772 * when doing I/O to/from user space, physio _really_ wants to be in 1773 * the loop. We could put the entire buffer into the ioctl request 1774 * structure, but that won't scale if we want to do things like download 1775 * microcode. 1776 */ 1777 1778 void 1779 wdioctlstrategy(bp) 1780 struct buf *bp; 1781 { 1782 struct wd_ioctl *wi; 1783 struct wdc_command wdc_c; 1784 int error = 0; 1785 1786 wi = wi_find(bp); 1787 if (wi == NULL) { 1788 printf("user_strat: No ioctl\n"); 1789 error = EINVAL; 1790 goto bad; 1791 } 1792 1793 memset(&wdc_c, 0, sizeof(wdc_c)); 1794 1795 /* 1796 * Abort if physio broke up the transfer 1797 */ 1798 1799 if (bp->b_bcount != wi->wi_atareq.datalen) { 1800 printf("physio split wd ioctl request... cannot proceed\n"); 1801 error = EIO; 1802 goto bad; 1803 } 1804 1805 /* 1806 * Abort if we didn't get a buffer size that was a multiple of 1807 * our sector size (or was larger than NBBY) 1808 */ 1809 1810 if ((bp->b_bcount % wi->wi_softc->sc_dk.dk_label->d_secsize) != 0 || 1811 (bp->b_bcount / wi->wi_softc->sc_dk.dk_label->d_secsize) >= 1812 (1 << NBBY)) { 1813 error = EINVAL; 1814 goto bad; 1815 } 1816 1817 /* 1818 * Make sure a timeout was supplied in the ioctl request 1819 */ 1820 1821 if (wi->wi_atareq.timeout == 0) { 1822 error = EINVAL; 1823 goto bad; 1824 } 1825 1826 if (wi->wi_atareq.flags & ATACMD_READ) 1827 wdc_c.flags |= AT_READ; 1828 else if (wi->wi_atareq.flags & ATACMD_WRITE) 1829 wdc_c.flags |= AT_WRITE; 1830 1831 if (wi->wi_atareq.flags & ATACMD_READREG) 1832 wdc_c.flags |= AT_READREG; 1833 1834 wdc_c.flags |= AT_WAIT; 1835 1836 wdc_c.timeout = wi->wi_atareq.timeout; 1837 wdc_c.r_command = wi->wi_atareq.command; 1838 wdc_c.r_head = wi->wi_atareq.head & 0x0f; 1839 wdc_c.r_cyl = wi->wi_atareq.cylinder; 1840 wdc_c.r_sector = wi->wi_atareq.sec_num; 1841 wdc_c.r_count = wi->wi_atareq.sec_count; 1842 wdc_c.r_precomp = wi->wi_atareq.features; 1843 wdc_c.r_st_bmask = WDCS_DRDY; 1844 wdc_c.r_st_pmask = WDCS_DRDY; 1845 wdc_c.data = wi->wi_bp.b_data; 1846 wdc_c.bcount = wi->wi_bp.b_bcount; 1847 1848 if (wi->wi_softc->atabus->ata_exec_command(wi->wi_softc->drvp, &wdc_c) 1849 != WDC_COMPLETE) { 1850 wi->wi_atareq.retsts = ATACMD_ERROR; 1851 goto bad; 1852 } 1853 1854 if (wdc_c.flags & (AT_ERROR | AT_TIMEOU | AT_DF)) { 1855 if (wdc_c.flags & AT_ERROR) { 1856 wi->wi_atareq.retsts = ATACMD_ERROR; 1857 wi->wi_atareq.error = wdc_c.r_error; 1858 } else if (wdc_c.flags & AT_DF) 1859 wi->wi_atareq.retsts = ATACMD_DF; 1860 else 1861 wi->wi_atareq.retsts = ATACMD_TIMEOUT; 1862 } else { 1863 wi->wi_atareq.retsts = ATACMD_OK; 1864 if (wi->wi_atareq.flags & ATACMD_READREG) { 1865 wi->wi_atareq.head = wdc_c.r_head ; 1866 wi->wi_atareq.cylinder = wdc_c.r_cyl; 1867 wi->wi_atareq.sec_num = wdc_c.r_sector; 1868 wi->wi_atareq.sec_count = wdc_c.r_count; 1869 wi->wi_atareq.features = wdc_c.r_precomp; 1870 wi->wi_atareq.error = wdc_c.r_error; 1871 } 1872 } 1873 1874 bp->b_error = 0; 1875 biodone(bp); 1876 return; 1877 bad: 1878 bp->b_flags |= B_ERROR; 1879 bp->b_error = error; 1880 biodone(bp); 1881 } 1882
Indexes created Sun Sep 28 16:09:52 GMT 2025