wd.c revision 1.245
1 /* $NetBSD: wd.c,v 1.245 2003/04/16 00:07:17 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 1.245 2003/04/16 00:07:17 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 bp->b_error = EIO; 553 goto bad; 554 } 555 } 556 557 /* Queue transfer on drive, activate drive and controller if idle. */ 558 s = splbio(); 559 BUFQ_PUT(&wd->sc_q, bp); 560 wdstart(wd); 561 splx(s); 562 return; 563 bad: 564 bp->b_flags |= B_ERROR; 565 done: 566 /* Toss transfer; we're done early. */ 567 bp->b_resid = bp->b_bcount; 568 biodone(bp); 569 } 570 571 /* 572 * Queue a drive for I/O. 573 */ 574 void 575 wdstart(arg) 576 void *arg; 577 { 578 struct wd_softc *wd = arg; 579 struct buf *bp = NULL; 580 581 WDCDEBUG_PRINT(("wdstart %s\n", wd->sc_dev.dv_xname), 582 DEBUG_XFERS); 583 while (wd->openings > 0) { 584 585 /* Is there a buf for us ? */ 586 if ((bp = BUFQ_GET(&wd->sc_q)) == NULL) 587 return; 588 589 /* 590 * Make the command. First lock the device 591 */ 592 wd->openings--; 593 594 wd->retries = 0; 595 __wdstart(wd, bp); 596 } 597 } 598 599 static void 600 wd_split_mod15_write(struct buf *bp) 601 { 602 struct buf *obp = bp->b_private; 603 struct wd_softc *sc = wd_cd.cd_devs[DISKUNIT(obp->b_dev)]; 604 605 if (__predict_false(bp->b_flags & B_ERROR) != 0) { 606 /* 607 * Propagate the error. If this was the first half of 608 * the original transfer, make sure to account for that 609 * in the residual. 610 */ 611 if (bp->b_data == obp->b_data) 612 bp->b_resid += bp->b_bcount; 613 goto done; 614 } 615 616 /* 617 * If this was the second half of the transfer, we're all done! 618 */ 619 if (bp->b_data != obp->b_data) 620 goto done; 621 622 /* 623 * Advance the pointer to the second half and issue that command 624 * using the same opening. 625 */ 626 bp->b_flags = obp->b_flags | B_CALL; 627 bp->b_data += bp->b_bcount; 628 bp->b_blkno += (bp->b_bcount / 512); 629 bp->b_rawblkno += (bp->b_bcount / 512); 630 __wdstart(sc, bp); 631 return; 632 633 done: 634 obp->b_flags |= (bp->b_flags & (B_EINTR|B_ERROR)); 635 obp->b_error = bp->b_error; 636 obp->b_resid = bp->b_resid; 637 pool_put(&bufpool, bp); 638 biodone(obp); 639 sc->openings++; 640 /* wddone() will call wdstart() */ 641 } 642 643 void 644 __wdstart(wd, bp) 645 struct wd_softc *wd; 646 struct buf *bp; 647 { 648 649 /* 650 * Deal with the "split mod15 write" quirk. We just divide the 651 * transfer in two, doing the first half and then then second half 652 * with the same command opening. 653 * 654 * Note we MUST do this here, because we can't let insertion 655 * into the bufq cause the transfers to be re-merged. 656 */ 657 if (__predict_false((wd->sc_quirks & WD_QUIRK_SPLIT_MOD15_WRITE) != 0 && 658 (bp->b_flags & B_READ) == 0 && 659 bp->b_bcount > 512 && 660 ((bp->b_bcount / 512) % 15) == 1)) { 661 struct buf *nbp; 662 663 /* already at splbio */ 664 nbp = pool_get(&bufpool, PR_NOWAIT); 665 if (__predict_false(nbp == NULL)) { 666 /* No memory -- fail the iop. */ 667 bp->b_error = ENOMEM; 668 bp->b_flags |= B_ERROR; 669 bp->b_resid = bp->b_bcount; 670 biodone(bp); 671 wd->openings++; 672 return; 673 } 674 675 BUF_INIT(nbp); 676 nbp->b_error = 0; 677 nbp->b_proc = bp->b_proc; 678 nbp->b_vp = NULLVP; 679 nbp->b_dev = bp->b_dev; 680 681 nbp->b_bcount = bp->b_bcount / 2; 682 nbp->b_bufsize = bp->b_bcount / 2; 683 nbp->b_data = bp->b_data; 684 685 nbp->b_blkno = bp->b_blkno; 686 nbp->b_rawblkno = bp->b_rawblkno; 687 688 nbp->b_flags = bp->b_flags | B_CALL; 689 nbp->b_iodone = wd_split_mod15_write; 690 691 /* Put ptr to orig buf in b_private and use new buf */ 692 nbp->b_private = bp; 693 bp = nbp; 694 } 695 696 wd->sc_wdc_bio.blkno = bp->b_rawblkno; 697 wd->sc_wdc_bio.blkdone =0; 698 wd->sc_bp = bp; 699 /* 700 * If we're retrying, retry in single-sector mode. This will give us 701 * the sector number of the problem, and will eventually allow the 702 * transfer to succeed. 703 */ 704 if (wd->sc_multi == 1 || wd->retries >= WDIORETRIES_SINGLE) 705 wd->sc_wdc_bio.flags = ATA_SINGLE; 706 else 707 wd->sc_wdc_bio.flags = 0; 708 if (wd->sc_flags & WDF_LBA48) 709 wd->sc_wdc_bio.flags |= ATA_LBA48; 710 if (wd->sc_flags & WDF_LBA) 711 wd->sc_wdc_bio.flags |= ATA_LBA; 712 if (bp->b_flags & B_READ) 713 wd->sc_wdc_bio.flags |= ATA_READ; 714 wd->sc_wdc_bio.bcount = bp->b_bcount; 715 wd->sc_wdc_bio.databuf = bp->b_data; 716 /* Instrumentation. */ 717 disk_busy(&wd->sc_dk); 718 switch (wd->atabus->ata_bio(wd->drvp, &wd->sc_wdc_bio)) { 719 case WDC_TRY_AGAIN: 720 callout_reset(&wd->sc_restart_ch, hz, wdrestart, wd); 721 break; 722 case WDC_QUEUED: 723 case WDC_COMPLETE: 724 break; 725 default: 726 panic("__wdstart: bad return code from ata_bio()"); 727 } 728 } 729 730 void 731 wddone(v) 732 void *v; 733 { 734 struct wd_softc *wd = v; 735 struct buf *bp = wd->sc_bp; 736 const char *errmsg; 737 int do_perror = 0; 738 WDCDEBUG_PRINT(("wddone %s\n", wd->sc_dev.dv_xname), 739 DEBUG_XFERS); 740 741 if (bp == NULL) 742 return; 743 bp->b_resid = wd->sc_wdc_bio.bcount; 744 switch (wd->sc_wdc_bio.error) { 745 case ERR_DMA: 746 errmsg = "DMA error"; 747 goto retry; 748 case ERR_DF: 749 errmsg = "device fault"; 750 goto retry; 751 case TIMEOUT: 752 errmsg = "device timeout"; 753 goto retry; 754 case ERROR: 755 /* Don't care about media change bits */ 756 if (wd->sc_wdc_bio.r_error != 0 && 757 (wd->sc_wdc_bio.r_error & ~(WDCE_MC | WDCE_MCR)) == 0) 758 goto noerror; 759 errmsg = "error"; 760 do_perror = 1; 761 retry: /* Just reset and retry. Can we do more ? */ 762 wd->atabus->ata_reset_channel(wd->drvp); 763 diskerr(bp, "wd", errmsg, LOG_PRINTF, 764 wd->sc_wdc_bio.blkdone, wd->sc_dk.dk_label); 765 if (wd->retries < WDIORETRIES) 766 printf(", retrying\n"); 767 if (do_perror) 768 wdperror(wd); 769 if (wd->retries < WDIORETRIES) { 770 wd->retries++; 771 callout_reset(&wd->sc_restart_ch, RECOVERYTIME, 772 wdrestart, wd); 773 return; 774 } 775 printf("\n"); 776 777 /* 778 * Not all errors indicate a failed block but those that do, 779 * put the block on the bad-block list for the device. Only 780 * do this for reads because the drive should do it for writes, 781 * itself, according to Manuel. 782 */ 783 if ((bp->b_flags & B_READ) && 784 ((wd->drvp->ata_vers >= 4 && wd->sc_wdc_bio.r_error & 64) || 785 (wd->drvp->ata_vers < 4 && wd->sc_wdc_bio.r_error & 192))) { 786 struct disk_badsectors *dbs; 787 788 dbs = malloc(sizeof *dbs, M_TEMP, M_WAITOK); 789 dbs->dbs_min = bp->b_rawblkno; 790 dbs->dbs_max = dbs->dbs_min + bp->b_bcount - 1; 791 microtime(&dbs->dbs_failedat); 792 SLIST_INSERT_HEAD(&wd->sc_bslist, dbs, dbs_next); 793 wd->sc_bscount++; 794 } 795 796 bp->b_flags |= B_ERROR; 797 bp->b_error = EIO; 798 break; 799 case NOERROR: 800 noerror: if ((wd->sc_wdc_bio.flags & ATA_CORR) || wd->retries > 0) 801 printf("%s: soft error (corrected)\n", 802 wd->sc_dev.dv_xname); 803 break; 804 case ERR_NODEV: 805 bp->b_flags |= B_ERROR; 806 bp->b_error = EIO; 807 break; 808 } 809 disk_unbusy(&wd->sc_dk, (bp->b_bcount - bp->b_resid), 810 (bp->b_flags & B_READ)); 811 #if NRND > 0 812 rnd_add_uint32(&wd->rnd_source, bp->b_blkno); 813 #endif 814 /* XXX Yuck, but we don't want to increment openings in this case */ 815 if (__predict_false((bp->b_flags & B_CALL) != 0 && 816 bp->b_iodone == wd_split_mod15_write)) 817 biodone(bp); 818 else { 819 biodone(bp); 820 wd->openings++; 821 } 822 wdstart(wd); 823 } 824 825 void 826 wdrestart(v) 827 void *v; 828 { 829 struct wd_softc *wd = v; 830 struct buf *bp = wd->sc_bp; 831 int s; 832 WDCDEBUG_PRINT(("wdrestart %s\n", wd->sc_dev.dv_xname), 833 DEBUG_XFERS); 834 835 s = splbio(); 836 __wdstart(v, bp); 837 splx(s); 838 } 839 840 int 841 wdread(dev, uio, flags) 842 dev_t dev; 843 struct uio *uio; 844 int flags; 845 { 846 847 WDCDEBUG_PRINT(("wdread\n"), DEBUG_XFERS); 848 return (physio(wdstrategy, NULL, dev, B_READ, minphys, uio)); 849 } 850 851 int 852 wdwrite(dev, uio, flags) 853 dev_t dev; 854 struct uio *uio; 855 int flags; 856 { 857 858 WDCDEBUG_PRINT(("wdwrite\n"), DEBUG_XFERS); 859 return (physio(wdstrategy, NULL, dev, B_WRITE, minphys, uio)); 860 } 861 862 /* 863 * Wait interruptibly for an exclusive lock. 864 * 865 * XXX 866 * Several drivers do this; it should be abstracted and made MP-safe. 867 */ 868 int 869 wdlock(wd) 870 struct wd_softc *wd; 871 { 872 int error; 873 int s; 874 875 WDCDEBUG_PRINT(("wdlock\n"), DEBUG_FUNCS); 876 877 s = splbio(); 878 879 while ((wd->sc_flags & WDF_LOCKED) != 0) { 880 wd->sc_flags |= WDF_WANTED; 881 if ((error = tsleep(wd, PRIBIO | PCATCH, 882 "wdlck", 0)) != 0) { 883 splx(s); 884 return error; 885 } 886 } 887 wd->sc_flags |= WDF_LOCKED; 888 splx(s); 889 return 0; 890 } 891 892 /* 893 * Unlock and wake up any waiters. 894 */ 895 void 896 wdunlock(wd) 897 struct wd_softc *wd; 898 { 899 900 WDCDEBUG_PRINT(("wdunlock\n"), DEBUG_FUNCS); 901 902 wd->sc_flags &= ~WDF_LOCKED; 903 if ((wd->sc_flags & WDF_WANTED) != 0) { 904 wd->sc_flags &= ~WDF_WANTED; 905 wakeup(wd); 906 } 907 } 908 909 int 910 wdopen(dev, flag, fmt, p) 911 dev_t dev; 912 int flag, fmt; 913 struct proc *p; 914 { 915 struct wd_softc *wd; 916 int part, error; 917 918 WDCDEBUG_PRINT(("wdopen\n"), DEBUG_FUNCS); 919 wd = device_lookup(&wd_cd, WDUNIT(dev)); 920 if (wd == NULL) 921 return (ENXIO); 922 923 /* 924 * If this is the first open of this device, add a reference 925 * to the adapter. 926 */ 927 if (wd->sc_dk.dk_openmask == 0 && 928 (error = wd->atabus->ata_addref(wd->drvp)) != 0) 929 return (error); 930 931 if ((error = wdlock(wd)) != 0) 932 goto bad4; 933 934 if (wd->sc_dk.dk_openmask != 0) { 935 /* 936 * If any partition is open, but the disk has been invalidated, 937 * disallow further opens. 938 */ 939 if ((wd->sc_flags & WDF_LOADED) == 0) { 940 error = EIO; 941 goto bad3; 942 } 943 } else { 944 if ((wd->sc_flags & WDF_LOADED) == 0) { 945 wd->sc_flags |= WDF_LOADED; 946 947 /* Load the physical device parameters. */ 948 wd_get_params(wd, AT_WAIT, &wd->sc_params); 949 950 /* Load the partition info if not already loaded. */ 951 wdgetdisklabel(wd); 952 } 953 } 954 955 part = WDPART(dev); 956 957 /* Check that the partition exists. */ 958 if (part != RAW_PART && 959 (part >= wd->sc_dk.dk_label->d_npartitions || 960 wd->sc_dk.dk_label->d_partitions[part].p_fstype == FS_UNUSED)) { 961 error = ENXIO; 962 goto bad; 963 } 964 965 /* Insure only one open at a time. */ 966 switch (fmt) { 967 case S_IFCHR: 968 wd->sc_dk.dk_copenmask |= (1 << part); 969 break; 970 case S_IFBLK: 971 wd->sc_dk.dk_bopenmask |= (1 << part); 972 break; 973 } 974 wd->sc_dk.dk_openmask = 975 wd->sc_dk.dk_copenmask | wd->sc_dk.dk_bopenmask; 976 977 wdunlock(wd); 978 return 0; 979 980 bad: 981 if (wd->sc_dk.dk_openmask == 0) { 982 } 983 984 bad3: 985 wdunlock(wd); 986 bad4: 987 if (wd->sc_dk.dk_openmask == 0) 988 wd->atabus->ata_delref(wd->drvp); 989 return error; 990 } 991 992 int 993 wdclose(dev, flag, fmt, p) 994 dev_t dev; 995 int flag, fmt; 996 struct proc *p; 997 { 998 struct wd_softc *wd = device_lookup(&wd_cd, WDUNIT(dev)); 999 int part = WDPART(dev); 1000 int error; 1001 1002 WDCDEBUG_PRINT(("wdclose\n"), DEBUG_FUNCS); 1003 if ((error = wdlock(wd)) != 0) 1004 return error; 1005 1006 switch (fmt) { 1007 case S_IFCHR: 1008 wd->sc_dk.dk_copenmask &= ~(1 << part); 1009 break; 1010 case S_IFBLK: 1011 wd->sc_dk.dk_bopenmask &= ~(1 << part); 1012 break; 1013 } 1014 wd->sc_dk.dk_openmask = 1015 wd->sc_dk.dk_copenmask | wd->sc_dk.dk_bopenmask; 1016 1017 if (wd->sc_dk.dk_openmask == 0) { 1018 wd_flushcache(wd, AT_WAIT); 1019 /* XXXX Must wait for I/O to complete! */ 1020 1021 if (! (wd->sc_flags & WDF_KLABEL)) 1022 wd->sc_flags &= ~WDF_LOADED; 1023 1024 wd->atabus->ata_delref(wd->drvp); 1025 } 1026 1027 wdunlock(wd); 1028 return 0; 1029 } 1030 1031 void 1032 wdgetdefaultlabel(wd, lp) 1033 struct wd_softc *wd; 1034 struct disklabel *lp; 1035 { 1036 1037 WDCDEBUG_PRINT(("wdgetdefaultlabel\n"), DEBUG_FUNCS); 1038 memset(lp, 0, sizeof(struct disklabel)); 1039 1040 lp->d_secsize = DEV_BSIZE; 1041 lp->d_ntracks = wd->sc_params.atap_heads; 1042 lp->d_nsectors = wd->sc_params.atap_sectors; 1043 lp->d_ncylinders = wd->sc_params.atap_cylinders; 1044 lp->d_secpercyl = lp->d_ntracks * lp->d_nsectors; 1045 1046 if (strcmp(wd->sc_params.atap_model, "ST506") == 0) 1047 lp->d_type = DTYPE_ST506; 1048 else 1049 lp->d_type = DTYPE_ESDI; 1050 1051 strncpy(lp->d_typename, wd->sc_params.atap_model, 16); 1052 strncpy(lp->d_packname, "fictitious", 16); 1053 if (wd->sc_capacity > UINT32_MAX) 1054 lp->d_secperunit = UINT32_MAX; 1055 else 1056 lp->d_secperunit = wd->sc_capacity; 1057 lp->d_rpm = 3600; 1058 lp->d_interleave = 1; 1059 lp->d_flags = 0; 1060 1061 lp->d_partitions[RAW_PART].p_offset = 0; 1062 lp->d_partitions[RAW_PART].p_size = 1063 lp->d_secperunit * (lp->d_secsize / DEV_BSIZE); 1064 lp->d_partitions[RAW_PART].p_fstype = FS_UNUSED; 1065 lp->d_npartitions = RAW_PART + 1; 1066 1067 lp->d_magic = DISKMAGIC; 1068 lp->d_magic2 = DISKMAGIC; 1069 lp->d_checksum = dkcksum(lp); 1070 } 1071 1072 /* 1073 * Fabricate a default disk label, and try to read the correct one. 1074 */ 1075 void 1076 wdgetdisklabel(wd) 1077 struct wd_softc *wd; 1078 { 1079 struct disklabel *lp = wd->sc_dk.dk_label; 1080 char *errstring; 1081 1082 WDCDEBUG_PRINT(("wdgetdisklabel\n"), DEBUG_FUNCS); 1083 1084 memset(wd->sc_dk.dk_cpulabel, 0, sizeof(struct cpu_disklabel)); 1085 1086 wdgetdefaultlabel(wd, lp); 1087 1088 wd->sc_badsect[0] = -1; 1089 1090 if (wd->drvp->state > RECAL) 1091 wd->drvp->drive_flags |= DRIVE_RESET; 1092 errstring = readdisklabel(MAKEWDDEV(0, wd->sc_dev.dv_unit, RAW_PART), 1093 wdstrategy, lp, wd->sc_dk.dk_cpulabel); 1094 if (errstring) { 1095 /* 1096 * This probably happened because the drive's default 1097 * geometry doesn't match the DOS geometry. We 1098 * assume the DOS geometry is now in the label and try 1099 * again. XXX This is a kluge. 1100 */ 1101 if (wd->drvp->state > RECAL) 1102 wd->drvp->drive_flags |= DRIVE_RESET; 1103 errstring = readdisklabel(MAKEWDDEV(0, wd->sc_dev.dv_unit, 1104 RAW_PART), wdstrategy, lp, wd->sc_dk.dk_cpulabel); 1105 } 1106 if (errstring) { 1107 printf("%s: %s\n", wd->sc_dev.dv_xname, errstring); 1108 return; 1109 } 1110 1111 if (wd->drvp->state > RECAL) 1112 wd->drvp->drive_flags |= DRIVE_RESET; 1113 #ifdef HAS_BAD144_HANDLING 1114 if ((lp->d_flags & D_BADSECT) != 0) 1115 bad144intern(wd); 1116 #endif 1117 } 1118 1119 void 1120 wdperror(wd) 1121 const struct wd_softc *wd; 1122 { 1123 static const char *const errstr0_3[] = {"address mark not found", 1124 "track 0 not found", "aborted command", "media change requested", 1125 "id not found", "media changed", "uncorrectable data error", 1126 "bad block detected"}; 1127 static const char *const errstr4_5[] = { 1128 "obsolete (address mark not found)", 1129 "no media/write protected", "aborted command", 1130 "media change requested", "id not found", "media changed", 1131 "uncorrectable data error", "interface CRC error"}; 1132 const char *const *errstr; 1133 int i; 1134 char *sep = ""; 1135 1136 const char *devname = wd->sc_dev.dv_xname; 1137 struct ata_drive_datas *drvp = wd->drvp; 1138 int errno = wd->sc_wdc_bio.r_error; 1139 1140 if (drvp->ata_vers >= 4) 1141 errstr = errstr4_5; 1142 else 1143 errstr = errstr0_3; 1144 1145 printf("%s: (", devname); 1146 1147 if (errno == 0) 1148 printf("error not notified"); 1149 1150 for (i = 0; i < 8; i++) { 1151 if (errno & (1 << i)) { 1152 printf("%s%s", sep, errstr[i]); 1153 sep = ", "; 1154 } 1155 } 1156 printf(")\n"); 1157 } 1158 1159 int 1160 wdioctl(dev, xfer, addr, flag, p) 1161 dev_t dev; 1162 u_long xfer; 1163 caddr_t addr; 1164 int flag; 1165 struct proc *p; 1166 { 1167 struct wd_softc *wd = device_lookup(&wd_cd, WDUNIT(dev)); 1168 int error = 0; 1169 #ifdef __HAVE_OLD_DISKLABEL 1170 struct disklabel *newlabel = NULL; 1171 #endif 1172 1173 WDCDEBUG_PRINT(("wdioctl\n"), DEBUG_FUNCS); 1174 1175 if ((wd->sc_flags & WDF_LOADED) == 0) 1176 return EIO; 1177 1178 switch (xfer) { 1179 #ifdef HAS_BAD144_HANDLING 1180 case DIOCSBAD: 1181 if ((flag & FWRITE) == 0) 1182 return EBADF; 1183 wd->sc_dk.dk_cpulabel->bad = *(struct dkbad *)addr; 1184 wd->sc_dk.dk_label->d_flags |= D_BADSECT; 1185 bad144intern(wd); 1186 return 0; 1187 #endif 1188 1189 case DIOCBSLIST : 1190 { 1191 u_int32_t count, missing, skip; 1192 struct disk_badsecinfo dbsi; 1193 struct disk_badsectors *dbs; 1194 size_t available; 1195 caddr_t laddr; 1196 1197 dbsi = *(struct disk_badsecinfo *)addr; 1198 missing = wd->sc_bscount; 1199 count = 0; 1200 available = dbsi.dbsi_bufsize; 1201 skip = dbsi.dbsi_skip; 1202 laddr = dbsi.dbsi_buffer; 1203 1204 /* 1205 * We start this loop with the expectation that all of the 1206 * entries will be missed and decrement this counter each 1207 * time we either skip over one (already copied out) or 1208 * we actually copy it back to user space. The structs 1209 * holding the bad sector information are copied directly 1210 * back to user space whilst the summary is returned via 1211 * the struct passed in via the ioctl. 1212 */ 1213 SLIST_FOREACH(dbs, &wd->sc_bslist, dbs_next) { 1214 if (skip > 0) { 1215 missing--; 1216 skip--; 1217 continue; 1218 } 1219 if (available < sizeof(*dbs)) 1220 break; 1221 available -= sizeof(*dbs); 1222 copyout(dbs, laddr, sizeof(*dbs)); 1223 laddr += sizeof(*dbs); 1224 missing--; 1225 count++; 1226 } 1227 dbsi.dbsi_left = missing; 1228 dbsi.dbsi_copied = count; 1229 *(struct disk_badsecinfo *)addr = dbsi; 1230 return 0; 1231 } 1232 1233 case DIOCBSFLUSH : 1234 /* Clean out the bad sector list */ 1235 while (!SLIST_EMPTY(&wd->sc_bslist)) { 1236 void *head = SLIST_FIRST(&wd->sc_bslist); 1237 SLIST_REMOVE_HEAD(&wd->sc_bslist, dbs_next); 1238 free(head, M_TEMP); 1239 } 1240 wd->sc_bscount = 0; 1241 return 0; 1242 1243 case DIOCGDINFO: 1244 *(struct disklabel *)addr = *(wd->sc_dk.dk_label); 1245 return 0; 1246 #ifdef __HAVE_OLD_DISKLABEL 1247 case ODIOCGDINFO: 1248 newlabel = malloc(sizeof *newlabel, M_TEMP, M_WAITOK); 1249 if (newlabel == NULL) 1250 return EIO; 1251 *newlabel = *(wd->sc_dk.dk_label); 1252 if (newlabel->d_npartitions <= OLDMAXPARTITIONS) 1253 memcpy(addr, newlabel, sizeof (struct olddisklabel)); 1254 else 1255 error = ENOTTY; 1256 free(newlabel, M_TEMP); 1257 return error; 1258 #endif 1259 1260 case DIOCGPART: 1261 ((struct partinfo *)addr)->disklab = wd->sc_dk.dk_label; 1262 ((struct partinfo *)addr)->part = 1263 &wd->sc_dk.dk_label->d_partitions[WDPART(dev)]; 1264 return 0; 1265 1266 case DIOCWDINFO: 1267 case DIOCSDINFO: 1268 #ifdef __HAVE_OLD_DISKLABEL 1269 case ODIOCWDINFO: 1270 case ODIOCSDINFO: 1271 #endif 1272 { 1273 struct disklabel *lp; 1274 1275 if ((flag & FWRITE) == 0) 1276 return EBADF; 1277 1278 #ifdef __HAVE_OLD_DISKLABEL 1279 if (xfer == ODIOCSDINFO || xfer == ODIOCWDINFO) { 1280 newlabel = malloc(sizeof *newlabel, M_TEMP, M_WAITOK); 1281 if (newlabel == NULL) 1282 return EIO; 1283 memset(newlabel, 0, sizeof newlabel); 1284 memcpy(newlabel, addr, sizeof (struct olddisklabel)); 1285 lp = newlabel; 1286 } else 1287 #endif 1288 lp = (struct disklabel *)addr; 1289 1290 if ((error = wdlock(wd)) != 0) 1291 goto bad; 1292 wd->sc_flags |= WDF_LABELLING; 1293 1294 error = setdisklabel(wd->sc_dk.dk_label, 1295 lp, /*wd->sc_dk.dk_openmask : */0, 1296 wd->sc_dk.dk_cpulabel); 1297 if (error == 0) { 1298 if (wd->drvp->state > RECAL) 1299 wd->drvp->drive_flags |= DRIVE_RESET; 1300 if (xfer == DIOCWDINFO 1301 #ifdef __HAVE_OLD_DISKLABEL 1302 || xfer == ODIOCWDINFO 1303 #endif 1304 ) 1305 error = writedisklabel(WDLABELDEV(dev), 1306 wdstrategy, wd->sc_dk.dk_label, 1307 wd->sc_dk.dk_cpulabel); 1308 } 1309 1310 wd->sc_flags &= ~WDF_LABELLING; 1311 wdunlock(wd); 1312 bad: 1313 #ifdef __HAVE_OLD_DISKLABEL 1314 if (newlabel != NULL) 1315 free(newlabel, M_TEMP); 1316 #endif 1317 return error; 1318 } 1319 1320 case DIOCKLABEL: 1321 if (*(int *)addr) 1322 wd->sc_flags |= WDF_KLABEL; 1323 else 1324 wd->sc_flags &= ~WDF_KLABEL; 1325 return 0; 1326 1327 case DIOCWLABEL: 1328 if ((flag & FWRITE) == 0) 1329 return EBADF; 1330 if (*(int *)addr) 1331 wd->sc_flags |= WDF_WLABEL; 1332 else 1333 wd->sc_flags &= ~WDF_WLABEL; 1334 return 0; 1335 1336 case DIOCGDEFLABEL: 1337 wdgetdefaultlabel(wd, (struct disklabel *)addr); 1338 return 0; 1339 #ifdef __HAVE_OLD_DISKLABEL 1340 case ODIOCGDEFLABEL: 1341 newlabel = malloc(sizeof *newlabel, M_TEMP, M_WAITOK); 1342 if (newlabel == NULL) 1343 return EIO; 1344 wdgetdefaultlabel(wd, newlabel); 1345 if (newlabel->d_npartitions <= OLDMAXPARTITIONS) 1346 memcpy(addr, &newlabel, sizeof (struct olddisklabel)); 1347 else 1348 error = ENOTTY; 1349 free(newlabel, M_TEMP); 1350 return error; 1351 #endif 1352 1353 #ifdef notyet 1354 case DIOCWFORMAT: 1355 if ((flag & FWRITE) == 0) 1356 return EBADF; 1357 { 1358 register struct format_op *fop; 1359 struct iovec aiov; 1360 struct uio auio; 1361 1362 fop = (struct format_op *)addr; 1363 aiov.iov_base = fop->df_buf; 1364 aiov.iov_len = fop->df_count; 1365 auio.uio_iov = &aiov; 1366 auio.uio_iovcnt = 1; 1367 auio.uio_resid = fop->df_count; 1368 auio.uio_segflg = 0; 1369 auio.uio_offset = 1370 fop->df_startblk * wd->sc_dk.dk_label->d_secsize; 1371 auio.uio_procp = p; 1372 error = physio(wdformat, NULL, dev, B_WRITE, minphys, 1373 &auio); 1374 fop->df_count -= auio.uio_resid; 1375 fop->df_reg[0] = wdc->sc_status; 1376 fop->df_reg[1] = wdc->sc_error; 1377 return error; 1378 } 1379 #endif 1380 1381 case ATAIOCCOMMAND: 1382 /* 1383 * Make sure this command is (relatively) safe first 1384 */ 1385 if ((((atareq_t *) addr)->flags & ATACMD_READ) == 0 && 1386 (flag & FWRITE) == 0) 1387 return (EBADF); 1388 { 1389 struct wd_ioctl *wi; 1390 atareq_t *atareq = (atareq_t *) addr; 1391 int error; 1392 1393 wi = wi_get(); 1394 wi->wi_softc = wd; 1395 wi->wi_atareq = *atareq; 1396 1397 if (atareq->datalen && atareq->flags & 1398 (ATACMD_READ | ATACMD_WRITE)) { 1399 wi->wi_iov.iov_base = atareq->databuf; 1400 wi->wi_iov.iov_len = atareq->datalen; 1401 wi->wi_uio.uio_iov = &wi->wi_iov; 1402 wi->wi_uio.uio_iovcnt = 1; 1403 wi->wi_uio.uio_resid = atareq->datalen; 1404 wi->wi_uio.uio_offset = 0; 1405 wi->wi_uio.uio_segflg = UIO_USERSPACE; 1406 wi->wi_uio.uio_rw = 1407 (atareq->flags & ATACMD_READ) ? B_READ : B_WRITE; 1408 wi->wi_uio.uio_procp = p; 1409 error = physio(wdioctlstrategy, &wi->wi_bp, dev, 1410 (atareq->flags & ATACMD_READ) ? B_READ : B_WRITE, 1411 minphys, &wi->wi_uio); 1412 } else { 1413 /* No need to call physio if we don't have any 1414 user data */ 1415 wi->wi_bp.b_flags = 0; 1416 wi->wi_bp.b_data = 0; 1417 wi->wi_bp.b_bcount = 0; 1418 wi->wi_bp.b_dev = 0; 1419 wi->wi_bp.b_proc = p; 1420 wdioctlstrategy(&wi->wi_bp); 1421 error = wi->wi_bp.b_error; 1422 } 1423 *atareq = wi->wi_atareq; 1424 wi_free(wi); 1425 return(error); 1426 } 1427 1428 default: 1429 return ENOTTY; 1430 } 1431 1432 #ifdef DIAGNOSTIC 1433 panic("wdioctl: impossible"); 1434 #endif 1435 } 1436 1437 #ifdef B_FORMAT 1438 int 1439 wdformat(struct buf *bp) 1440 { 1441 1442 bp->b_flags |= B_FORMAT; 1443 return wdstrategy(bp); 1444 } 1445 #endif 1446 1447 int 1448 wdsize(dev) 1449 dev_t dev; 1450 { 1451 struct wd_softc *wd; 1452 int part, omask; 1453 int size; 1454 1455 WDCDEBUG_PRINT(("wdsize\n"), DEBUG_FUNCS); 1456 1457 wd = device_lookup(&wd_cd, WDUNIT(dev)); 1458 if (wd == NULL) 1459 return (-1); 1460 1461 part = WDPART(dev); 1462 omask = wd->sc_dk.dk_openmask & (1 << part); 1463 1464 if (omask == 0 && wdopen(dev, 0, S_IFBLK, NULL) != 0) 1465 return (-1); 1466 if (wd->sc_dk.dk_label->d_partitions[part].p_fstype != FS_SWAP) 1467 size = -1; 1468 else 1469 size = wd->sc_dk.dk_label->d_partitions[part].p_size * 1470 (wd->sc_dk.dk_label->d_secsize / DEV_BSIZE); 1471 if (omask == 0 && wdclose(dev, 0, S_IFBLK, NULL) != 0) 1472 return (-1); 1473 return (size); 1474 } 1475 1476 /* #define WD_DUMP_NOT_TRUSTED if you just want to watch */ 1477 static int wddoingadump = 0; 1478 static int wddumprecalibrated = 0; 1479 static int wddumpmulti = 1; 1480 1481 /* 1482 * Dump core after a system crash. 1483 */ 1484 int 1485 wddump(dev, blkno, va, size) 1486 dev_t dev; 1487 daddr_t blkno; 1488 caddr_t va; 1489 size_t size; 1490 { 1491 struct wd_softc *wd; /* disk unit to do the I/O */ 1492 struct disklabel *lp; /* disk's disklabel */ 1493 int part, err; 1494 int nblks; /* total number of sectors left to write */ 1495 1496 /* Check if recursive dump; if so, punt. */ 1497 if (wddoingadump) 1498 return EFAULT; 1499 wddoingadump = 1; 1500 1501 wd = device_lookup(&wd_cd, WDUNIT(dev)); 1502 if (wd == NULL) 1503 return (ENXIO); 1504 1505 part = WDPART(dev); 1506 1507 /* Convert to disk sectors. Request must be a multiple of size. */ 1508 lp = wd->sc_dk.dk_label; 1509 if ((size % lp->d_secsize) != 0) 1510 return EFAULT; 1511 nblks = size / lp->d_secsize; 1512 blkno = blkno / (lp->d_secsize / DEV_BSIZE); 1513 1514 /* Check transfer bounds against partition size. */ 1515 if ((blkno < 0) || ((blkno + nblks) > lp->d_partitions[part].p_size)) 1516 return EINVAL; 1517 1518 /* Offset block number to start of partition. */ 1519 blkno += lp->d_partitions[part].p_offset; 1520 1521 /* Recalibrate, if first dump transfer. */ 1522 if (wddumprecalibrated == 0) { 1523 wddumpmulti = wd->sc_multi; 1524 wddumprecalibrated = 1; 1525 wd->drvp->state = RESET; 1526 } 1527 1528 while (nblks > 0) { 1529 again: 1530 wd->sc_bp = NULL; 1531 wd->sc_wdc_bio.blkno = blkno; 1532 wd->sc_wdc_bio.flags = ATA_POLL; 1533 if (wddumpmulti == 1) 1534 wd->sc_wdc_bio.flags |= ATA_SINGLE; 1535 if (wd->sc_flags & WDF_LBA48) 1536 wd->sc_wdc_bio.flags |= ATA_LBA48; 1537 if (wd->sc_flags & WDF_LBA) 1538 wd->sc_wdc_bio.flags |= ATA_LBA; 1539 wd->sc_wdc_bio.bcount = 1540 min(nblks, wddumpmulti) * lp->d_secsize; 1541 wd->sc_wdc_bio.databuf = va; 1542 #ifndef WD_DUMP_NOT_TRUSTED 1543 switch (wd->atabus->ata_bio(wd->drvp, &wd->sc_wdc_bio)) { 1544 case WDC_TRY_AGAIN: 1545 panic("wddump: try again"); 1546 break; 1547 case WDC_QUEUED: 1548 panic("wddump: polled command has been queued"); 1549 break; 1550 case WDC_COMPLETE: 1551 break; 1552 } 1553 switch(wd->sc_wdc_bio.error) { 1554 case TIMEOUT: 1555 printf("wddump: device timed out"); 1556 err = EIO; 1557 break; 1558 case ERR_DF: 1559 printf("wddump: drive fault"); 1560 err = EIO; 1561 break; 1562 case ERR_DMA: 1563 printf("wddump: DMA error"); 1564 err = EIO; 1565 break; 1566 case ERROR: 1567 printf("wddump: "); 1568 wdperror(wd); 1569 err = EIO; 1570 break; 1571 case NOERROR: 1572 err = 0; 1573 break; 1574 default: 1575 panic("wddump: unknown error type"); 1576 } 1577 if (err != 0) { 1578 if (wddumpmulti != 1) { 1579 wddumpmulti = 1; /* retry in single-sector */ 1580 printf(", retrying\n"); 1581 goto again; 1582 } 1583 printf("\n"); 1584 return err; 1585 } 1586 #else /* WD_DUMP_NOT_TRUSTED */ 1587 /* Let's just talk about this first... */ 1588 printf("wd%d: dump addr 0x%x, cylin %d, head %d, sector %d\n", 1589 unit, va, cylin, head, sector); 1590 delay(500 * 1000); /* half a second */ 1591 #endif 1592 1593 /* update block count */ 1594 nblks -= min(nblks, wddumpmulti); 1595 blkno += min(nblks, wddumpmulti); 1596 va += min(nblks, wddumpmulti) * lp->d_secsize; 1597 } 1598 1599 wddoingadump = 0; 1600 return 0; 1601 } 1602 1603 #ifdef HAS_BAD144_HANDLING 1604 /* 1605 * Internalize the bad sector table. 1606 */ 1607 void 1608 bad144intern(wd) 1609 struct wd_softc *wd; 1610 { 1611 struct dkbad *bt = &wd->sc_dk.dk_cpulabel->bad; 1612 struct disklabel *lp = wd->sc_dk.dk_label; 1613 int i = 0; 1614 1615 WDCDEBUG_PRINT(("bad144intern\n"), DEBUG_XFERS); 1616 1617 for (; i < NBT_BAD; i++) { 1618 if (bt->bt_bad[i].bt_cyl == 0xffff) 1619 break; 1620 wd->sc_badsect[i] = 1621 bt->bt_bad[i].bt_cyl * lp->d_secpercyl + 1622 (bt->bt_bad[i].bt_trksec >> 8) * lp->d_nsectors + 1623 (bt->bt_bad[i].bt_trksec & 0xff); 1624 } 1625 for (; i < NBT_BAD+1; i++) 1626 wd->sc_badsect[i] = -1; 1627 } 1628 #endif 1629 1630 int 1631 wd_get_params(wd, flags, params) 1632 struct wd_softc *wd; 1633 u_int8_t flags; 1634 struct ataparams *params; 1635 { 1636 switch (wd->atabus->ata_get_params(wd->drvp, flags, params)) { 1637 case CMD_AGAIN: 1638 return 1; 1639 case CMD_ERR: 1640 /* 1641 * We `know' there's a drive here; just assume it's old. 1642 * This geometry is only used to read the MBR and print a 1643 * (false) attach message. 1644 */ 1645 strncpy(params->atap_model, "ST506", 1646 sizeof params->atap_model); 1647 params->atap_config = ATA_CFG_FIXED; 1648 params->atap_cylinders = 1024; 1649 params->atap_heads = 8; 1650 params->atap_sectors = 17; 1651 params->atap_multi = 1; 1652 params->atap_capabilities1 = params->atap_capabilities2 = 0; 1653 wd->drvp->ata_vers = -1; /* Mark it as pre-ATA */ 1654 return 0; 1655 case CMD_OK: 1656 return 0; 1657 default: 1658 panic("wd_get_params: bad return code from ata_get_params"); 1659 /* NOTREACHED */ 1660 } 1661 } 1662 1663 void 1664 wd_flushcache(wd, flags) 1665 struct wd_softc *wd; 1666 int flags; 1667 { 1668 struct wdc_command wdc_c; 1669 1670 if (wd->drvp->ata_vers < 4) /* WDCC_FLUSHCACHE is here since ATA-4 */ 1671 return; 1672 memset(&wdc_c, 0, sizeof(struct wdc_command)); 1673 wdc_c.r_command = WDCC_FLUSHCACHE; 1674 wdc_c.r_st_bmask = WDCS_DRDY; 1675 wdc_c.r_st_pmask = WDCS_DRDY; 1676 wdc_c.flags = flags; 1677 wdc_c.timeout = 30000; /* 30s timeout */ 1678 if (wd->atabus->ata_exec_command(wd->drvp, &wdc_c) != WDC_COMPLETE) { 1679 printf("%s: flush cache command didn't complete\n", 1680 wd->sc_dev.dv_xname); 1681 } 1682 if (wdc_c.flags & AT_TIMEOU) { 1683 printf("%s: flush cache command timeout\n", 1684 wd->sc_dev.dv_xname); 1685 } 1686 if (wdc_c.flags & AT_DF) { 1687 printf("%s: flush cache command: drive fault\n", 1688 wd->sc_dev.dv_xname); 1689 } 1690 /* 1691 * Ignore error register, it shouldn't report anything else 1692 * than COMMAND ABORTED, which means the device doesn't support 1693 * flush cache 1694 */ 1695 } 1696 1697 void 1698 wd_shutdown(arg) 1699 void *arg; 1700 { 1701 struct wd_softc *wd = arg; 1702 wd_flushcache(wd, AT_POLL); 1703 } 1704 1705 /* 1706 * Allocate space for a ioctl queue structure. Mostly taken from 1707 * scsipi_ioctl.c 1708 */ 1709 struct wd_ioctl * 1710 wi_get() 1711 { 1712 struct wd_ioctl *wi; 1713 int s; 1714 1715 wi = malloc(sizeof(struct wd_ioctl), M_TEMP, M_WAITOK|M_ZERO); 1716 simple_lock_init(&wi->wi_bp.b_interlock); 1717 s = splbio(); 1718 LIST_INSERT_HEAD(&wi_head, wi, wi_list); 1719 splx(s); 1720 return (wi); 1721 } 1722 1723 /* 1724 * Free an ioctl structure and remove it from our list 1725 */ 1726 1727 void 1728 wi_free(wi) 1729 struct wd_ioctl *wi; 1730 { 1731 int s; 1732 1733 s = splbio(); 1734 LIST_REMOVE(wi, wi_list); 1735 splx(s); 1736 free(wi, M_TEMP); 1737 } 1738 1739 /* 1740 * Find a wd_ioctl structure based on the struct buf. 1741 */ 1742 1743 struct wd_ioctl * 1744 wi_find(bp) 1745 struct buf *bp; 1746 { 1747 struct wd_ioctl *wi; 1748 int s; 1749 1750 s = splbio(); 1751 for (wi = wi_head.lh_first; wi != 0; wi = wi->wi_list.le_next) 1752 if (bp == &wi->wi_bp) 1753 break; 1754 splx(s); 1755 return (wi); 1756 } 1757 1758 /* 1759 * Ioctl pseudo strategy routine 1760 * 1761 * This is mostly stolen from scsipi_ioctl.c:scsistrategy(). What 1762 * happens here is: 1763 * 1764 * - wdioctl() queues a wd_ioctl structure. 1765 * 1766 * - wdioctl() calls physio/wdioctlstrategy based on whether or not 1767 * user space I/O is required. If physio() is called, physio() eventually 1768 * calls wdioctlstrategy(). 1769 * 1770 * - In either case, wdioctlstrategy() calls wd->atabus->ata_exec_command() 1771 * to perform the actual command 1772 * 1773 * The reason for the use of the pseudo strategy routine is because 1774 * when doing I/O to/from user space, physio _really_ wants to be in 1775 * the loop. We could put the entire buffer into the ioctl request 1776 * structure, but that won't scale if we want to do things like download 1777 * microcode. 1778 */ 1779 1780 void 1781 wdioctlstrategy(bp) 1782 struct buf *bp; 1783 { 1784 struct wd_ioctl *wi; 1785 struct wdc_command wdc_c; 1786 int error = 0; 1787 1788 wi = wi_find(bp); 1789 if (wi == NULL) { 1790 printf("user_strat: No ioctl\n"); 1791 error = EINVAL; 1792 goto bad; 1793 } 1794 1795 memset(&wdc_c, 0, sizeof(wdc_c)); 1796 1797 /* 1798 * Abort if physio broke up the transfer 1799 */ 1800 1801 if (bp->b_bcount != wi->wi_atareq.datalen) { 1802 printf("physio split wd ioctl request... cannot proceed\n"); 1803 error = EIO; 1804 goto bad; 1805 } 1806 1807 /* 1808 * Abort if we didn't get a buffer size that was a multiple of 1809 * our sector size (or was larger than NBBY) 1810 */ 1811 1812 if ((bp->b_bcount % wi->wi_softc->sc_dk.dk_label->d_secsize) != 0 || 1813 (bp->b_bcount / wi->wi_softc->sc_dk.dk_label->d_secsize) >= 1814 (1 << NBBY)) { 1815 error = EINVAL; 1816 goto bad; 1817 } 1818 1819 /* 1820 * Make sure a timeout was supplied in the ioctl request 1821 */ 1822 1823 if (wi->wi_atareq.timeout == 0) { 1824 error = EINVAL; 1825 goto bad; 1826 } 1827 1828 if (wi->wi_atareq.flags & ATACMD_READ) 1829 wdc_c.flags |= AT_READ; 1830 else if (wi->wi_atareq.flags & ATACMD_WRITE) 1831 wdc_c.flags |= AT_WRITE; 1832 1833 if (wi->wi_atareq.flags & ATACMD_READREG) 1834 wdc_c.flags |= AT_READREG; 1835 1836 wdc_c.flags |= AT_WAIT; 1837 1838 wdc_c.timeout = wi->wi_atareq.timeout; 1839 wdc_c.r_command = wi->wi_atareq.command; 1840 wdc_c.r_head = wi->wi_atareq.head & 0x0f; 1841 wdc_c.r_cyl = wi->wi_atareq.cylinder; 1842 wdc_c.r_sector = wi->wi_atareq.sec_num; 1843 wdc_c.r_count = wi->wi_atareq.sec_count; 1844 wdc_c.r_precomp = wi->wi_atareq.features; 1845 wdc_c.r_st_bmask = WDCS_DRDY; 1846 wdc_c.r_st_pmask = WDCS_DRDY; 1847 wdc_c.data = wi->wi_bp.b_data; 1848 wdc_c.bcount = wi->wi_bp.b_bcount; 1849 1850 if (wi->wi_softc->atabus->ata_exec_command(wi->wi_softc->drvp, &wdc_c) 1851 != WDC_COMPLETE) { 1852 wi->wi_atareq.retsts = ATACMD_ERROR; 1853 goto bad; 1854 } 1855 1856 if (wdc_c.flags & (AT_ERROR | AT_TIMEOU | AT_DF)) { 1857 if (wdc_c.flags & AT_ERROR) { 1858 wi->wi_atareq.retsts = ATACMD_ERROR; 1859 wi->wi_atareq.error = wdc_c.r_error; 1860 } else if (wdc_c.flags & AT_DF) 1861 wi->wi_atareq.retsts = ATACMD_DF; 1862 else 1863 wi->wi_atareq.retsts = ATACMD_TIMEOUT; 1864 } else { 1865 wi->wi_atareq.retsts = ATACMD_OK; 1866 if (wi->wi_atareq.flags & ATACMD_READREG) { 1867 wi->wi_atareq.head = wdc_c.r_head ; 1868 wi->wi_atareq.cylinder = wdc_c.r_cyl; 1869 wi->wi_atareq.sec_num = wdc_c.r_sector; 1870 wi->wi_atareq.sec_count = wdc_c.r_count; 1871 wi->wi_atareq.features = wdc_c.r_precomp; 1872 wi->wi_atareq.error = wdc_c.r_error; 1873 } 1874 } 1875 1876 bp->b_error = 0; 1877 biodone(bp); 1878 return; 1879 bad: 1880 bp->b_flags |= B_ERROR; 1881 bp->b_error = error; 1882 biodone(bp); 1883 } 1884
Indexes created Sat Sep 27 14:09:57 GMT 2025