wd.c revision 1.247
1 /* $NetBSD: wd.c,v 1.247 2003/04/18 04:32:19 explorer 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 1.247 2003/04/18 04:32:19 explorer 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 whose 218 * sector count % 15 == 1 (assuming 512 byte sectors). 219 * 220 * XXX This is an incomplete list. There are at least a couple 221 * XXX more model numbers. If you have trouble with such transfers 222 * XXX (8K is the most common) on Seagate S-ATA drives, please 223 * XXX notify thorpej (at) netbsd.org. 224 */ 225 { "ST3120023AS", 226 WD_QUIRK_SPLIT_MOD15_WRITE }, 227 { "ST380023AS", 228 WD_QUIRK_SPLIT_MOD15_WRITE }, 229 230 { NULL, 231 0 } 232 }; 233 234 static const struct wd_quirk * 235 wd_lookup_quirks(const char *name) 236 { 237 const struct wd_quirk *wdq; 238 const char *estr; 239 240 for (wdq = wd_quirk_table; wdq->wdq_match != NULL; wdq++) { 241 /* 242 * We only want exact matches (which include matches 243 * against globbing characters). 244 */ 245 if (pmatch(name, wdq->wdq_match, &estr) == 2) 246 return (wdq); 247 } 248 return (NULL); 249 } 250 251 int 252 wdprobe(parent, match, aux) 253 struct device *parent; 254 struct cfdata *match; 255 256 void *aux; 257 { 258 struct ata_device *adev = aux; 259 260 if (adev == NULL) 261 return 0; 262 if (adev->adev_bustype->bustype_type != SCSIPI_BUSTYPE_ATA) 263 return 0; 264 265 if (match->cf_loc[ATACF_CHANNEL] != ATACF_CHANNEL_DEFAULT && 266 match->cf_loc[ATACF_CHANNEL] != adev->adev_channel) 267 return 0; 268 269 if (match->cf_loc[ATACF_DRIVE] != ATACF_DRIVE_DEFAULT && 270 match->cf_loc[ATACF_DRIVE] != adev->adev_drv_data->drive) 271 return 0; 272 return 1; 273 } 274 275 void 276 wdattach(parent, self, aux) 277 struct device *parent, *self; 278 void *aux; 279 { 280 struct wd_softc *wd = (void *)self; 281 struct ata_device *adev= aux; 282 int i, blank; 283 char buf[41], pbuf[9], c, *p, *q; 284 const struct wd_quirk *wdq; 285 WDCDEBUG_PRINT(("wdattach\n"), DEBUG_FUNCS | DEBUG_PROBE); 286 287 callout_init(&wd->sc_restart_ch); 288 #ifdef NEW_BUFQ_STRATEGY 289 bufq_alloc(&wd->sc_q, BUFQ_READ_PRIO|BUFQ_SORT_RAWBLOCK); 290 #else 291 bufq_alloc(&wd->sc_q, BUFQ_DISKSORT|BUFQ_SORT_RAWBLOCK); 292 #endif 293 SLIST_INIT(&wd->sc_bslist); 294 295 wd->atabus = adev->adev_bustype; 296 wd->openings = adev->adev_openings; 297 wd->drvp = adev->adev_drv_data; 298 wd->wdc_softc = parent; 299 /* give back our softc to our caller */ 300 wd->drvp->drv_softc = &wd->sc_dev; 301 302 /* read our drive info */ 303 if (wd_get_params(wd, AT_POLL, &wd->sc_params) != 0) { 304 printf("%s: IDENTIFY failed\n", wd->sc_dev.dv_xname); 305 return; 306 } 307 308 for (blank = 0, p = wd->sc_params.atap_model, q = buf, i = 0; 309 i < sizeof(wd->sc_params.atap_model); i++) { 310 c = *p++; 311 if (c == '\0') 312 break; 313 if (c != ' ') { 314 if (blank) { 315 *q++ = ' '; 316 blank = 0; 317 } 318 *q++ = c; 319 } else 320 blank = 1; 321 } 322 *q++ = '\0'; 323 324 printf(": <%s>\n", buf); 325 326 wdq = wd_lookup_quirks(buf); 327 if (wdq != NULL) 328 wd->sc_quirks = wdq->wdq_quirks; 329 330 if ((wd->sc_params.atap_multi & 0xff) > 1) { 331 wd->sc_multi = wd->sc_params.atap_multi & 0xff; 332 } else { 333 wd->sc_multi = 1; 334 } 335 336 printf("%s: drive supports %d-sector PIO transfers,", 337 wd->sc_dev.dv_xname, wd->sc_multi); 338 339 /* 48-bit LBA addressing */ 340 if ((wd->sc_params.atap_cmd2_en & WDC_CAP_LBA48) != 0) 341 wd->sc_flags |= WDF_LBA48; 342 343 /* Prior to ATA-4, LBA was optional. */ 344 if ((wd->sc_params.atap_capabilities1 & WDC_CAP_LBA) != 0) 345 wd->sc_flags |= WDF_LBA; 346 #if 0 347 /* ATA-4 requires LBA. */ 348 if (wd->sc_params.atap_ataversion != 0xffff && 349 wd->sc_params.atap_ataversion >= WDC_VER_ATA4) 350 wd->sc_flags |= WDF_LBA; 351 #endif 352 353 if ((wd->sc_flags & WDF_LBA48) != 0) { 354 printf(" LBA48 addressing\n"); 355 wd->sc_capacity = 356 ((u_int64_t) wd->sc_params.__reserved6[11] << 48) | 357 ((u_int64_t) wd->sc_params.__reserved6[10] << 32) | 358 ((u_int64_t) wd->sc_params.__reserved6[9] << 16) | 359 ((u_int64_t) wd->sc_params.__reserved6[8] << 0); 360 } else if ((wd->sc_flags & WDF_LBA) != 0) { 361 printf(" LBA addressing\n"); 362 wd->sc_capacity = 363 (wd->sc_params.atap_capacity[1] << 16) | 364 wd->sc_params.atap_capacity[0]; 365 } else { 366 printf(" chs addressing\n"); 367 wd->sc_capacity = 368 wd->sc_params.atap_cylinders * 369 wd->sc_params.atap_heads * 370 wd->sc_params.atap_sectors; 371 } 372 format_bytes(pbuf, sizeof(pbuf), wd->sc_capacity * DEV_BSIZE); 373 printf("%s: %s, %d cyl, %d head, %d sec, " 374 "%d bytes/sect x %llu sectors\n", 375 self->dv_xname, pbuf, wd->sc_params.atap_cylinders, 376 wd->sc_params.atap_heads, wd->sc_params.atap_sectors, 377 DEV_BSIZE, (unsigned long long)wd->sc_capacity); 378 379 WDCDEBUG_PRINT(("%s: atap_dmatiming_mimi=%d, atap_dmatiming_recom=%d\n", 380 self->dv_xname, wd->sc_params.atap_dmatiming_mimi, 381 wd->sc_params.atap_dmatiming_recom), DEBUG_PROBE); 382 /* 383 * Initialize and attach the disk structure. 384 */ 385 wd->sc_dk.dk_driver = &wddkdriver; 386 wd->sc_dk.dk_name = wd->sc_dev.dv_xname; 387 disk_attach(&wd->sc_dk); 388 wd->sc_wdc_bio.lp = wd->sc_dk.dk_label; 389 wd->sc_sdhook = shutdownhook_establish(wd_shutdown, wd); 390 if (wd->sc_sdhook == NULL) 391 printf("%s: WARNING: unable to establish shutdown hook\n", 392 wd->sc_dev.dv_xname); 393 #if NRND > 0 394 rnd_attach_source(&wd->rnd_source, wd->sc_dev.dv_xname, 395 RND_TYPE_DISK, 0); 396 #endif 397 } 398 399 int 400 wdactivate(self, act) 401 struct device *self; 402 enum devact act; 403 { 404 int rv = 0; 405 406 switch (act) { 407 case DVACT_ACTIVATE: 408 rv = EOPNOTSUPP; 409 break; 410 411 case DVACT_DEACTIVATE: 412 /* 413 * Nothing to do; we key off the device's DVF_ACTIVATE. 414 */ 415 break; 416 } 417 return (rv); 418 } 419 420 int 421 wddetach(self, flags) 422 struct device *self; 423 int flags; 424 { 425 struct wd_softc *sc = (struct wd_softc *)self; 426 struct buf *bp; 427 int s, bmaj, cmaj, i, mn; 428 429 /* Clean out the bad sector list */ 430 while (!SLIST_EMPTY(&sc->sc_bslist)) { 431 void *head = SLIST_FIRST(&sc->sc_bslist); 432 SLIST_REMOVE_HEAD(&sc->sc_bslist, dbs_next); 433 free(head, M_TEMP); 434 } 435 sc->sc_bscount = 0; 436 437 /* locate the major number */ 438 bmaj = bdevsw_lookup_major(&wd_bdevsw); 439 cmaj = cdevsw_lookup_major(&wd_cdevsw); 440 441 s = splbio(); 442 443 /* Kill off any queued buffers. */ 444 while ((bp = BUFQ_GET(&sc->sc_q)) != NULL) { 445 bp->b_error = EIO; 446 bp->b_flags |= B_ERROR; 447 bp->b_resid = bp->b_bcount; 448 biodone(bp); 449 } 450 451 bufq_free(&sc->sc_q); 452 453 splx(s); 454 455 /* Nuke the vnodes for any open instances. */ 456 for (i = 0; i < MAXPARTITIONS; i++) { 457 mn = WDMINOR(self->dv_unit, i); 458 vdevgone(bmaj, mn, mn, VBLK); 459 vdevgone(cmaj, mn, mn, VCHR); 460 } 461 462 /* Detach disk. */ 463 disk_detach(&sc->sc_dk); 464 465 /* Get rid of the shutdown hook. */ 466 if (sc->sc_sdhook != NULL) 467 shutdownhook_disestablish(sc->sc_sdhook); 468 469 #if NRND > 0 470 /* Unhook the entropy source. */ 471 rnd_detach_source(&sc->rnd_source); 472 #endif 473 474 return (0); 475 } 476 477 /* 478 * Read/write routine for a buffer. Validates the arguments and schedules the 479 * transfer. Does not wait for the transfer to complete. 480 */ 481 void 482 wdstrategy(bp) 483 struct buf *bp; 484 { 485 struct wd_softc *wd = device_lookup(&wd_cd, WDUNIT(bp->b_dev)); 486 struct disklabel *lp = wd->sc_dk.dk_label; 487 daddr_t blkno; 488 int s; 489 490 WDCDEBUG_PRINT(("wdstrategy (%s)\n", wd->sc_dev.dv_xname), 491 DEBUG_XFERS); 492 493 /* Valid request? */ 494 if (bp->b_blkno < 0 || 495 (bp->b_bcount % lp->d_secsize) != 0 || 496 (bp->b_bcount / lp->d_secsize) >= (1 << NBBY)) { 497 bp->b_error = EINVAL; 498 goto bad; 499 } 500 501 /* If device invalidated (e.g. media change, door open), error. */ 502 if ((wd->sc_flags & WDF_LOADED) == 0) { 503 bp->b_error = EIO; 504 goto bad; 505 } 506 507 /* If it's a null transfer, return immediately. */ 508 if (bp->b_bcount == 0) 509 goto done; 510 511 /* 512 * Do bounds checking, adjust transfer. if error, process. 513 * If end of partition, just return. 514 */ 515 if (WDPART(bp->b_dev) == RAW_PART) { 516 if (bounds_check_with_mediasize(bp, DEV_BSIZE, 517 wd->sc_capacity) <= 0) 518 goto done; 519 } else { 520 if (bounds_check_with_label(bp, wd->sc_dk.dk_label, 521 (wd->sc_flags & (WDF_WLABEL|WDF_LABELLING)) != 0) <= 0) 522 goto done; 523 } 524 525 /* 526 * Now convert the block number to absolute and put it in 527 * terms of the device's logical block size. 528 */ 529 if (lp->d_secsize >= DEV_BSIZE) 530 blkno = bp->b_blkno / (lp->d_secsize / DEV_BSIZE); 531 else 532 blkno = bp->b_blkno * (DEV_BSIZE / lp->d_secsize); 533 534 if (WDPART(bp->b_dev) != RAW_PART) 535 blkno += lp->d_partitions[WDPART(bp->b_dev)].p_offset; 536 537 bp->b_rawblkno = blkno; 538 539 /* 540 * If the transfer about to be attempted contains only a block that 541 * is known to be bad then return an error for the transfer without 542 * even attempting to start a transfer up under the premis that we 543 * will just end up doing more retries for a transfer that will end 544 * up failing again. 545 * XXX:SMP - mutex required to protect with DIOCBSFLUSH 546 */ 547 if (__predict_false(!SLIST_EMPTY(&wd->sc_bslist))) { 548 struct disk_badsectors *dbs; 549 daddr_t maxblk = blkno + (bp->b_bcount / DEV_BSIZE) - 1; 550 551 SLIST_FOREACH(dbs, &wd->sc_bslist, dbs_next) 552 if ((dbs->dbs_min <= blkno && blkno <= dbs->dbs_max) || 553 (dbs->dbs_min <= maxblk && maxblk <= dbs->dbs_max)){ 554 bp->b_error = EIO; 555 goto bad; 556 } 557 } 558 559 /* Queue transfer on drive, activate drive and controller if idle. */ 560 s = splbio(); 561 BUFQ_PUT(&wd->sc_q, bp); 562 wdstart(wd); 563 splx(s); 564 return; 565 bad: 566 bp->b_flags |= B_ERROR; 567 done: 568 /* Toss transfer; we're done early. */ 569 bp->b_resid = bp->b_bcount; 570 biodone(bp); 571 } 572 573 /* 574 * Queue a drive for I/O. 575 */ 576 void 577 wdstart(arg) 578 void *arg; 579 { 580 struct wd_softc *wd = arg; 581 struct buf *bp = NULL; 582 583 WDCDEBUG_PRINT(("wdstart %s\n", wd->sc_dev.dv_xname), 584 DEBUG_XFERS); 585 while (wd->openings > 0) { 586 587 /* Is there a buf for us ? */ 588 if ((bp = BUFQ_GET(&wd->sc_q)) == NULL) 589 return; 590 591 /* 592 * Make the command. First lock the device 593 */ 594 wd->openings--; 595 596 wd->retries = 0; 597 __wdstart(wd, bp); 598 } 599 } 600 601 static void 602 wd_split_mod15_write(struct buf *bp) 603 { 604 struct buf *obp = bp->b_private; 605 struct wd_softc *sc = wd_cd.cd_devs[DISKUNIT(obp->b_dev)]; 606 607 if (__predict_false(bp->b_flags & B_ERROR) != 0) { 608 /* 609 * Propagate the error. If this was the first half of 610 * the original transfer, make sure to account for that 611 * in the residual. 612 */ 613 if (bp->b_data == obp->b_data) 614 bp->b_resid += bp->b_bcount; 615 goto done; 616 } 617 618 /* 619 * If this was the second half of the transfer, we're all done! 620 */ 621 if (bp->b_data != obp->b_data) 622 goto done; 623 624 /* 625 * Advance the pointer to the second half and issue that command 626 * using the same opening. 627 */ 628 bp->b_flags = obp->b_flags | B_CALL; 629 bp->b_data += bp->b_bcount; 630 bp->b_blkno += (bp->b_bcount / 512); 631 bp->b_rawblkno += (bp->b_bcount / 512); 632 __wdstart(sc, bp); 633 return; 634 635 done: 636 obp->b_flags |= (bp->b_flags & (B_EINTR|B_ERROR)); 637 obp->b_error = bp->b_error; 638 obp->b_resid = bp->b_resid; 639 pool_put(&bufpool, bp); 640 biodone(obp); 641 sc->openings++; 642 /* wddone() will call wdstart() */ 643 } 644 645 void 646 __wdstart(wd, bp) 647 struct wd_softc *wd; 648 struct buf *bp; 649 { 650 651 /* 652 * Deal with the "split mod15 write" quirk. We just divide the 653 * transfer in two, doing the first half and then then second half 654 * with the same command opening. 655 * 656 * Note we MUST do this here, because we can't let insertion 657 * into the bufq cause the transfers to be re-merged. 658 */ 659 if (__predict_false((wd->sc_quirks & WD_QUIRK_SPLIT_MOD15_WRITE) != 0 && 660 (bp->b_flags & B_READ) == 0 && 661 bp->b_bcount > 512 && 662 ((bp->b_bcount / 512) % 15) == 1)) { 663 struct buf *nbp; 664 665 /* already at splbio */ 666 nbp = pool_get(&bufpool, PR_NOWAIT); 667 if (__predict_false(nbp == NULL)) { 668 /* No memory -- fail the iop. */ 669 bp->b_error = ENOMEM; 670 bp->b_flags |= B_ERROR; 671 bp->b_resid = bp->b_bcount; 672 biodone(bp); 673 wd->openings++; 674 return; 675 } 676 677 BUF_INIT(nbp); 678 nbp->b_error = 0; 679 nbp->b_proc = bp->b_proc; 680 nbp->b_vp = NULLVP; 681 nbp->b_dev = bp->b_dev; 682 683 nbp->b_bcount = bp->b_bcount / 2; 684 nbp->b_bufsize = bp->b_bcount / 2; 685 nbp->b_data = bp->b_data; 686 687 nbp->b_blkno = bp->b_blkno; 688 nbp->b_rawblkno = bp->b_rawblkno; 689 690 nbp->b_flags = bp->b_flags | B_CALL; 691 nbp->b_iodone = wd_split_mod15_write; 692 693 /* Put ptr to orig buf in b_private and use new buf */ 694 nbp->b_private = bp; 695 bp = nbp; 696 } 697 698 wd->sc_wdc_bio.blkno = bp->b_rawblkno; 699 wd->sc_wdc_bio.blkdone =0; 700 wd->sc_bp = bp; 701 /* 702 * If we're retrying, retry in single-sector mode. This will give us 703 * the sector number of the problem, and will eventually allow the 704 * transfer to succeed. 705 */ 706 if (wd->sc_multi == 1 || wd->retries >= WDIORETRIES_SINGLE) 707 wd->sc_wdc_bio.flags = ATA_SINGLE; 708 else 709 wd->sc_wdc_bio.flags = 0; 710 if (wd->sc_flags & WDF_LBA48) 711 wd->sc_wdc_bio.flags |= ATA_LBA48; 712 if (wd->sc_flags & WDF_LBA) 713 wd->sc_wdc_bio.flags |= ATA_LBA; 714 if (bp->b_flags & B_READ) 715 wd->sc_wdc_bio.flags |= ATA_READ; 716 wd->sc_wdc_bio.bcount = bp->b_bcount; 717 wd->sc_wdc_bio.databuf = bp->b_data; 718 /* Instrumentation. */ 719 disk_busy(&wd->sc_dk); 720 switch (wd->atabus->ata_bio(wd->drvp, &wd->sc_wdc_bio)) { 721 case WDC_TRY_AGAIN: 722 callout_reset(&wd->sc_restart_ch, hz, wdrestart, wd); 723 break; 724 case WDC_QUEUED: 725 case WDC_COMPLETE: 726 break; 727 default: 728 panic("__wdstart: bad return code from ata_bio()"); 729 } 730 } 731 732 void 733 wddone(v) 734 void *v; 735 { 736 struct wd_softc *wd = v; 737 struct buf *bp = wd->sc_bp; 738 const char *errmsg; 739 int do_perror = 0; 740 WDCDEBUG_PRINT(("wddone %s\n", wd->sc_dev.dv_xname), 741 DEBUG_XFERS); 742 743 if (bp == NULL) 744 return; 745 bp->b_resid = wd->sc_wdc_bio.bcount; 746 switch (wd->sc_wdc_bio.error) { 747 case ERR_DMA: 748 errmsg = "DMA error"; 749 goto retry; 750 case ERR_DF: 751 errmsg = "device fault"; 752 goto retry; 753 case TIMEOUT: 754 errmsg = "device timeout"; 755 goto retry; 756 case ERROR: 757 /* Don't care about media change bits */ 758 if (wd->sc_wdc_bio.r_error != 0 && 759 (wd->sc_wdc_bio.r_error & ~(WDCE_MC | WDCE_MCR)) == 0) 760 goto noerror; 761 errmsg = "error"; 762 do_perror = 1; 763 retry: /* Just reset and retry. Can we do more ? */ 764 wd->atabus->ata_reset_channel(wd->drvp); 765 diskerr(bp, "wd", errmsg, LOG_PRINTF, 766 wd->sc_wdc_bio.blkdone, wd->sc_dk.dk_label); 767 if (wd->retries < WDIORETRIES) 768 printf(", retrying\n"); 769 if (do_perror) 770 wdperror(wd); 771 if (wd->retries < WDIORETRIES) { 772 wd->retries++; 773 callout_reset(&wd->sc_restart_ch, RECOVERYTIME, 774 wdrestart, wd); 775 return; 776 } 777 printf("\n"); 778 779 /* 780 * Not all errors indicate a failed block but those that do, 781 * put the block on the bad-block list for the device. Only 782 * do this for reads because the drive should do it for writes, 783 * itself, according to Manuel. 784 */ 785 if ((bp->b_flags & B_READ) && 786 ((wd->drvp->ata_vers >= 4 && wd->sc_wdc_bio.r_error & 64) || 787 (wd->drvp->ata_vers < 4 && wd->sc_wdc_bio.r_error & 192))) { 788 struct disk_badsectors *dbs; 789 790 dbs = malloc(sizeof *dbs, M_TEMP, M_WAITOK); 791 dbs->dbs_min = bp->b_rawblkno; 792 dbs->dbs_max = dbs->dbs_min + bp->b_bcount - 1; 793 microtime(&dbs->dbs_failedat); 794 SLIST_INSERT_HEAD(&wd->sc_bslist, dbs, dbs_next); 795 wd->sc_bscount++; 796 } 797 798 bp->b_flags |= B_ERROR; 799 bp->b_error = EIO; 800 break; 801 case NOERROR: 802 noerror: if ((wd->sc_wdc_bio.flags & ATA_CORR) || wd->retries > 0) 803 printf("%s: soft error (corrected)\n", 804 wd->sc_dev.dv_xname); 805 break; 806 case ERR_NODEV: 807 bp->b_flags |= B_ERROR; 808 bp->b_error = EIO; 809 break; 810 } 811 disk_unbusy(&wd->sc_dk, (bp->b_bcount - bp->b_resid), 812 (bp->b_flags & B_READ)); 813 #if NRND > 0 814 rnd_add_uint32(&wd->rnd_source, bp->b_blkno); 815 #endif 816 /* XXX Yuck, but we don't want to increment openings in this case */ 817 if (__predict_false((bp->b_flags & B_CALL) != 0 && 818 bp->b_iodone == wd_split_mod15_write)) 819 biodone(bp); 820 else { 821 biodone(bp); 822 wd->openings++; 823 } 824 wdstart(wd); 825 } 826 827 void 828 wdrestart(v) 829 void *v; 830 { 831 struct wd_softc *wd = v; 832 struct buf *bp = wd->sc_bp; 833 int s; 834 WDCDEBUG_PRINT(("wdrestart %s\n", wd->sc_dev.dv_xname), 835 DEBUG_XFERS); 836 837 s = splbio(); 838 __wdstart(v, bp); 839 splx(s); 840 } 841 842 int 843 wdread(dev, uio, flags) 844 dev_t dev; 845 struct uio *uio; 846 int flags; 847 { 848 849 WDCDEBUG_PRINT(("wdread\n"), DEBUG_XFERS); 850 return (physio(wdstrategy, NULL, dev, B_READ, minphys, uio)); 851 } 852 853 int 854 wdwrite(dev, uio, flags) 855 dev_t dev; 856 struct uio *uio; 857 int flags; 858 { 859 860 WDCDEBUG_PRINT(("wdwrite\n"), DEBUG_XFERS); 861 return (physio(wdstrategy, NULL, dev, B_WRITE, minphys, uio)); 862 } 863 864 /* 865 * Wait interruptibly for an exclusive lock. 866 * 867 * XXX 868 * Several drivers do this; it should be abstracted and made MP-safe. 869 */ 870 int 871 wdlock(wd) 872 struct wd_softc *wd; 873 { 874 int error; 875 int s; 876 877 WDCDEBUG_PRINT(("wdlock\n"), DEBUG_FUNCS); 878 879 s = splbio(); 880 881 while ((wd->sc_flags & WDF_LOCKED) != 0) { 882 wd->sc_flags |= WDF_WANTED; 883 if ((error = tsleep(wd, PRIBIO | PCATCH, 884 "wdlck", 0)) != 0) { 885 splx(s); 886 return error; 887 } 888 } 889 wd->sc_flags |= WDF_LOCKED; 890 splx(s); 891 return 0; 892 } 893 894 /* 895 * Unlock and wake up any waiters. 896 */ 897 void 898 wdunlock(wd) 899 struct wd_softc *wd; 900 { 901 902 WDCDEBUG_PRINT(("wdunlock\n"), DEBUG_FUNCS); 903 904 wd->sc_flags &= ~WDF_LOCKED; 905 if ((wd->sc_flags & WDF_WANTED) != 0) { 906 wd->sc_flags &= ~WDF_WANTED; 907 wakeup(wd); 908 } 909 } 910 911 int 912 wdopen(dev, flag, fmt, p) 913 dev_t dev; 914 int flag, fmt; 915 struct proc *p; 916 { 917 struct wd_softc *wd; 918 int part, error; 919 920 WDCDEBUG_PRINT(("wdopen\n"), DEBUG_FUNCS); 921 wd = device_lookup(&wd_cd, WDUNIT(dev)); 922 if (wd == NULL) 923 return (ENXIO); 924 925 /* 926 * If this is the first open of this device, add a reference 927 * to the adapter. 928 */ 929 if (wd->sc_dk.dk_openmask == 0 && 930 (error = wd->atabus->ata_addref(wd->drvp)) != 0) 931 return (error); 932 933 if ((error = wdlock(wd)) != 0) 934 goto bad4; 935 936 if (wd->sc_dk.dk_openmask != 0) { 937 /* 938 * If any partition is open, but the disk has been invalidated, 939 * disallow further opens. 940 */ 941 if ((wd->sc_flags & WDF_LOADED) == 0) { 942 error = EIO; 943 goto bad3; 944 } 945 } else { 946 if ((wd->sc_flags & WDF_LOADED) == 0) { 947 wd->sc_flags |= WDF_LOADED; 948 949 /* Load the physical device parameters. */ 950 wd_get_params(wd, AT_WAIT, &wd->sc_params); 951 952 /* Load the partition info if not already loaded. */ 953 wdgetdisklabel(wd); 954 } 955 } 956 957 part = WDPART(dev); 958 959 /* Check that the partition exists. */ 960 if (part != RAW_PART && 961 (part >= wd->sc_dk.dk_label->d_npartitions || 962 wd->sc_dk.dk_label->d_partitions[part].p_fstype == FS_UNUSED)) { 963 error = ENXIO; 964 goto bad; 965 } 966 967 /* Insure only one open at a time. */ 968 switch (fmt) { 969 case S_IFCHR: 970 wd->sc_dk.dk_copenmask |= (1 << part); 971 break; 972 case S_IFBLK: 973 wd->sc_dk.dk_bopenmask |= (1 << part); 974 break; 975 } 976 wd->sc_dk.dk_openmask = 977 wd->sc_dk.dk_copenmask | wd->sc_dk.dk_bopenmask; 978 979 wdunlock(wd); 980 return 0; 981 982 bad: 983 if (wd->sc_dk.dk_openmask == 0) { 984 } 985 986 bad3: 987 wdunlock(wd); 988 bad4: 989 if (wd->sc_dk.dk_openmask == 0) 990 wd->atabus->ata_delref(wd->drvp); 991 return error; 992 } 993 994 int 995 wdclose(dev, flag, fmt, p) 996 dev_t dev; 997 int flag, fmt; 998 struct proc *p; 999 { 1000 struct wd_softc *wd = device_lookup(&wd_cd, WDUNIT(dev)); 1001 int part = WDPART(dev); 1002 int error; 1003 1004 WDCDEBUG_PRINT(("wdclose\n"), DEBUG_FUNCS); 1005 if ((error = wdlock(wd)) != 0) 1006 return error; 1007 1008 switch (fmt) { 1009 case S_IFCHR: 1010 wd->sc_dk.dk_copenmask &= ~(1 << part); 1011 break; 1012 case S_IFBLK: 1013 wd->sc_dk.dk_bopenmask &= ~(1 << part); 1014 break; 1015 } 1016 wd->sc_dk.dk_openmask = 1017 wd->sc_dk.dk_copenmask | wd->sc_dk.dk_bopenmask; 1018 1019 if (wd->sc_dk.dk_openmask == 0) { 1020 wd_flushcache(wd, AT_WAIT); 1021 /* XXXX Must wait for I/O to complete! */ 1022 1023 if (! (wd->sc_flags & WDF_KLABEL)) 1024 wd->sc_flags &= ~WDF_LOADED; 1025 1026 wd->atabus->ata_delref(wd->drvp); 1027 } 1028 1029 wdunlock(wd); 1030 return 0; 1031 } 1032 1033 void 1034 wdgetdefaultlabel(wd, lp) 1035 struct wd_softc *wd; 1036 struct disklabel *lp; 1037 { 1038 1039 WDCDEBUG_PRINT(("wdgetdefaultlabel\n"), DEBUG_FUNCS); 1040 memset(lp, 0, sizeof(struct disklabel)); 1041 1042 lp->d_secsize = DEV_BSIZE; 1043 lp->d_ntracks = wd->sc_params.atap_heads; 1044 lp->d_nsectors = wd->sc_params.atap_sectors; 1045 lp->d_ncylinders = wd->sc_params.atap_cylinders; 1046 lp->d_secpercyl = lp->d_ntracks * lp->d_nsectors; 1047 1048 if (strcmp(wd->sc_params.atap_model, "ST506") == 0) 1049 lp->d_type = DTYPE_ST506; 1050 else 1051 lp->d_type = DTYPE_ESDI; 1052 1053 strncpy(lp->d_typename, wd->sc_params.atap_model, 16); 1054 strncpy(lp->d_packname, "fictitious", 16); 1055 if (wd->sc_capacity > UINT32_MAX) 1056 lp->d_secperunit = UINT32_MAX; 1057 else 1058 lp->d_secperunit = wd->sc_capacity; 1059 lp->d_rpm = 3600; 1060 lp->d_interleave = 1; 1061 lp->d_flags = 0; 1062 1063 lp->d_partitions[RAW_PART].p_offset = 0; 1064 lp->d_partitions[RAW_PART].p_size = 1065 lp->d_secperunit * (lp->d_secsize / DEV_BSIZE); 1066 lp->d_partitions[RAW_PART].p_fstype = FS_UNUSED; 1067 lp->d_npartitions = RAW_PART + 1; 1068 1069 lp->d_magic = DISKMAGIC; 1070 lp->d_magic2 = DISKMAGIC; 1071 lp->d_checksum = dkcksum(lp); 1072 } 1073 1074 /* 1075 * Fabricate a default disk label, and try to read the correct one. 1076 */ 1077 void 1078 wdgetdisklabel(wd) 1079 struct wd_softc *wd; 1080 { 1081 struct disklabel *lp = wd->sc_dk.dk_label; 1082 char *errstring; 1083 1084 WDCDEBUG_PRINT(("wdgetdisklabel\n"), DEBUG_FUNCS); 1085 1086 memset(wd->sc_dk.dk_cpulabel, 0, sizeof(struct cpu_disklabel)); 1087 1088 wdgetdefaultlabel(wd, lp); 1089 1090 wd->sc_badsect[0] = -1; 1091 1092 if (wd->drvp->state > RECAL) 1093 wd->drvp->drive_flags |= DRIVE_RESET; 1094 errstring = readdisklabel(MAKEWDDEV(0, wd->sc_dev.dv_unit, RAW_PART), 1095 wdstrategy, lp, wd->sc_dk.dk_cpulabel); 1096 if (errstring) { 1097 /* 1098 * This probably happened because the drive's default 1099 * geometry doesn't match the DOS geometry. We 1100 * assume the DOS geometry is now in the label and try 1101 * again. XXX This is a kluge. 1102 */ 1103 if (wd->drvp->state > RECAL) 1104 wd->drvp->drive_flags |= DRIVE_RESET; 1105 errstring = readdisklabel(MAKEWDDEV(0, wd->sc_dev.dv_unit, 1106 RAW_PART), wdstrategy, lp, wd->sc_dk.dk_cpulabel); 1107 } 1108 if (errstring) { 1109 printf("%s: %s\n", wd->sc_dev.dv_xname, errstring); 1110 return; 1111 } 1112 1113 if (wd->drvp->state > RECAL) 1114 wd->drvp->drive_flags |= DRIVE_RESET; 1115 #ifdef HAS_BAD144_HANDLING 1116 if ((lp->d_flags & D_BADSECT) != 0) 1117 bad144intern(wd); 1118 #endif 1119 } 1120 1121 void 1122 wdperror(wd) 1123 const struct wd_softc *wd; 1124 { 1125 static const char *const errstr0_3[] = {"address mark not found", 1126 "track 0 not found", "aborted command", "media change requested", 1127 "id not found", "media changed", "uncorrectable data error", 1128 "bad block detected"}; 1129 static const char *const errstr4_5[] = { 1130 "obsolete (address mark not found)", 1131 "no media/write protected", "aborted command", 1132 "media change requested", "id not found", "media changed", 1133 "uncorrectable data error", "interface CRC error"}; 1134 const char *const *errstr; 1135 int i; 1136 char *sep = ""; 1137 1138 const char *devname = wd->sc_dev.dv_xname; 1139 struct ata_drive_datas *drvp = wd->drvp; 1140 int errno = wd->sc_wdc_bio.r_error; 1141 1142 if (drvp->ata_vers >= 4) 1143 errstr = errstr4_5; 1144 else 1145 errstr = errstr0_3; 1146 1147 printf("%s: (", devname); 1148 1149 if (errno == 0) 1150 printf("error not notified"); 1151 1152 for (i = 0; i < 8; i++) { 1153 if (errno & (1 << i)) { 1154 printf("%s%s", sep, errstr[i]); 1155 sep = ", "; 1156 } 1157 } 1158 printf(")\n"); 1159 } 1160 1161 int 1162 wdioctl(dev, xfer, addr, flag, p) 1163 dev_t dev; 1164 u_long xfer; 1165 caddr_t addr; 1166 int flag; 1167 struct proc *p; 1168 { 1169 struct wd_softc *wd = device_lookup(&wd_cd, WDUNIT(dev)); 1170 int error = 0; 1171 #ifdef __HAVE_OLD_DISKLABEL 1172 struct disklabel *newlabel = NULL; 1173 #endif 1174 1175 WDCDEBUG_PRINT(("wdioctl\n"), DEBUG_FUNCS); 1176 1177 if ((wd->sc_flags & WDF_LOADED) == 0) 1178 return EIO; 1179 1180 switch (xfer) { 1181 #ifdef HAS_BAD144_HANDLING 1182 case DIOCSBAD: 1183 if ((flag & FWRITE) == 0) 1184 return EBADF; 1185 wd->sc_dk.dk_cpulabel->bad = *(struct dkbad *)addr; 1186 wd->sc_dk.dk_label->d_flags |= D_BADSECT; 1187 bad144intern(wd); 1188 return 0; 1189 #endif 1190 1191 case DIOCBSLIST : 1192 { 1193 u_int32_t count, missing, skip; 1194 struct disk_badsecinfo dbsi; 1195 struct disk_badsectors *dbs; 1196 size_t available; 1197 caddr_t laddr; 1198 1199 dbsi = *(struct disk_badsecinfo *)addr; 1200 missing = wd->sc_bscount; 1201 count = 0; 1202 available = dbsi.dbsi_bufsize; 1203 skip = dbsi.dbsi_skip; 1204 laddr = dbsi.dbsi_buffer; 1205 1206 /* 1207 * We start this loop with the expectation that all of the 1208 * entries will be missed and decrement this counter each 1209 * time we either skip over one (already copied out) or 1210 * we actually copy it back to user space. The structs 1211 * holding the bad sector information are copied directly 1212 * back to user space whilst the summary is returned via 1213 * the struct passed in via the ioctl. 1214 */ 1215 SLIST_FOREACH(dbs, &wd->sc_bslist, dbs_next) { 1216 if (skip > 0) { 1217 missing--; 1218 skip--; 1219 continue; 1220 } 1221 if (available < sizeof(*dbs)) 1222 break; 1223 available -= sizeof(*dbs); 1224 copyout(dbs, laddr, sizeof(*dbs)); 1225 laddr += sizeof(*dbs); 1226 missing--; 1227 count++; 1228 } 1229 dbsi.dbsi_left = missing; 1230 dbsi.dbsi_copied = count; 1231 *(struct disk_badsecinfo *)addr = dbsi; 1232 return 0; 1233 } 1234 1235 case DIOCBSFLUSH : 1236 /* Clean out the bad sector list */ 1237 while (!SLIST_EMPTY(&wd->sc_bslist)) { 1238 void *head = SLIST_FIRST(&wd->sc_bslist); 1239 SLIST_REMOVE_HEAD(&wd->sc_bslist, dbs_next); 1240 free(head, M_TEMP); 1241 } 1242 wd->sc_bscount = 0; 1243 return 0; 1244 1245 case DIOCGDINFO: 1246 *(struct disklabel *)addr = *(wd->sc_dk.dk_label); 1247 return 0; 1248 #ifdef __HAVE_OLD_DISKLABEL 1249 case ODIOCGDINFO: 1250 newlabel = malloc(sizeof *newlabel, M_TEMP, M_WAITOK); 1251 if (newlabel == NULL) 1252 return EIO; 1253 *newlabel = *(wd->sc_dk.dk_label); 1254 if (newlabel->d_npartitions <= OLDMAXPARTITIONS) 1255 memcpy(addr, newlabel, sizeof (struct olddisklabel)); 1256 else 1257 error = ENOTTY; 1258 free(newlabel, M_TEMP); 1259 return error; 1260 #endif 1261 1262 case DIOCGPART: 1263 ((struct partinfo *)addr)->disklab = wd->sc_dk.dk_label; 1264 ((struct partinfo *)addr)->part = 1265 &wd->sc_dk.dk_label->d_partitions[WDPART(dev)]; 1266 return 0; 1267 1268 case DIOCWDINFO: 1269 case DIOCSDINFO: 1270 #ifdef __HAVE_OLD_DISKLABEL 1271 case ODIOCWDINFO: 1272 case ODIOCSDINFO: 1273 #endif 1274 { 1275 struct disklabel *lp; 1276 1277 if ((flag & FWRITE) == 0) 1278 return EBADF; 1279 1280 #ifdef __HAVE_OLD_DISKLABEL 1281 if (xfer == ODIOCSDINFO || xfer == ODIOCWDINFO) { 1282 newlabel = malloc(sizeof *newlabel, M_TEMP, M_WAITOK); 1283 if (newlabel == NULL) 1284 return EIO; 1285 memset(newlabel, 0, sizeof newlabel); 1286 memcpy(newlabel, addr, sizeof (struct olddisklabel)); 1287 lp = newlabel; 1288 } else 1289 #endif 1290 lp = (struct disklabel *)addr; 1291 1292 if ((error = wdlock(wd)) != 0) 1293 goto bad; 1294 wd->sc_flags |= WDF_LABELLING; 1295 1296 error = setdisklabel(wd->sc_dk.dk_label, 1297 lp, /*wd->sc_dk.dk_openmask : */0, 1298 wd->sc_dk.dk_cpulabel); 1299 if (error == 0) { 1300 if (wd->drvp->state > RECAL) 1301 wd->drvp->drive_flags |= DRIVE_RESET; 1302 if (xfer == DIOCWDINFO 1303 #ifdef __HAVE_OLD_DISKLABEL 1304 || xfer == ODIOCWDINFO 1305 #endif 1306 ) 1307 error = writedisklabel(WDLABELDEV(dev), 1308 wdstrategy, wd->sc_dk.dk_label, 1309 wd->sc_dk.dk_cpulabel); 1310 } 1311 1312 wd->sc_flags &= ~WDF_LABELLING; 1313 wdunlock(wd); 1314 bad: 1315 #ifdef __HAVE_OLD_DISKLABEL 1316 if (newlabel != NULL) 1317 free(newlabel, M_TEMP); 1318 #endif 1319 return error; 1320 } 1321 1322 case DIOCKLABEL: 1323 if (*(int *)addr) 1324 wd->sc_flags |= WDF_KLABEL; 1325 else 1326 wd->sc_flags &= ~WDF_KLABEL; 1327 return 0; 1328 1329 case DIOCWLABEL: 1330 if ((flag & FWRITE) == 0) 1331 return EBADF; 1332 if (*(int *)addr) 1333 wd->sc_flags |= WDF_WLABEL; 1334 else 1335 wd->sc_flags &= ~WDF_WLABEL; 1336 return 0; 1337 1338 case DIOCGDEFLABEL: 1339 wdgetdefaultlabel(wd, (struct disklabel *)addr); 1340 return 0; 1341 #ifdef __HAVE_OLD_DISKLABEL 1342 case ODIOCGDEFLABEL: 1343 newlabel = malloc(sizeof *newlabel, M_TEMP, M_WAITOK); 1344 if (newlabel == NULL) 1345 return EIO; 1346 wdgetdefaultlabel(wd, newlabel); 1347 if (newlabel->d_npartitions <= OLDMAXPARTITIONS) 1348 memcpy(addr, &newlabel, sizeof (struct olddisklabel)); 1349 else 1350 error = ENOTTY; 1351 free(newlabel, M_TEMP); 1352 return error; 1353 #endif 1354 1355 #ifdef notyet 1356 case DIOCWFORMAT: 1357 if ((flag & FWRITE) == 0) 1358 return EBADF; 1359 { 1360 register struct format_op *fop; 1361 struct iovec aiov; 1362 struct uio auio; 1363 1364 fop = (struct format_op *)addr; 1365 aiov.iov_base = fop->df_buf; 1366 aiov.iov_len = fop->df_count; 1367 auio.uio_iov = &aiov; 1368 auio.uio_iovcnt = 1; 1369 auio.uio_resid = fop->df_count; 1370 auio.uio_segflg = 0; 1371 auio.uio_offset = 1372 fop->df_startblk * wd->sc_dk.dk_label->d_secsize; 1373 auio.uio_procp = p; 1374 error = physio(wdformat, NULL, dev, B_WRITE, minphys, 1375 &auio); 1376 fop->df_count -= auio.uio_resid; 1377 fop->df_reg[0] = wdc->sc_status; 1378 fop->df_reg[1] = wdc->sc_error; 1379 return error; 1380 } 1381 #endif 1382 1383 case ATAIOCCOMMAND: 1384 /* 1385 * Make sure this command is (relatively) safe first 1386 */ 1387 if ((((atareq_t *) addr)->flags & ATACMD_READ) == 0 && 1388 (flag & FWRITE) == 0) 1389 return (EBADF); 1390 { 1391 struct wd_ioctl *wi; 1392 atareq_t *atareq = (atareq_t *) addr; 1393 int error; 1394 1395 wi = wi_get(); 1396 wi->wi_softc = wd; 1397 wi->wi_atareq = *atareq; 1398 1399 if (atareq->datalen && atareq->flags & 1400 (ATACMD_READ | ATACMD_WRITE)) { 1401 wi->wi_iov.iov_base = atareq->databuf; 1402 wi->wi_iov.iov_len = atareq->datalen; 1403 wi->wi_uio.uio_iov = &wi->wi_iov; 1404 wi->wi_uio.uio_iovcnt = 1; 1405 wi->wi_uio.uio_resid = atareq->datalen; 1406 wi->wi_uio.uio_offset = 0; 1407 wi->wi_uio.uio_segflg = UIO_USERSPACE; 1408 wi->wi_uio.uio_rw = 1409 (atareq->flags & ATACMD_READ) ? B_READ : B_WRITE; 1410 wi->wi_uio.uio_procp = p; 1411 error = physio(wdioctlstrategy, &wi->wi_bp, dev, 1412 (atareq->flags & ATACMD_READ) ? B_READ : B_WRITE, 1413 minphys, &wi->wi_uio); 1414 } else { 1415 /* No need to call physio if we don't have any 1416 user data */ 1417 wi->wi_bp.b_flags = 0; 1418 wi->wi_bp.b_data = 0; 1419 wi->wi_bp.b_bcount = 0; 1420 wi->wi_bp.b_dev = 0; 1421 wi->wi_bp.b_proc = p; 1422 wdioctlstrategy(&wi->wi_bp); 1423 error = wi->wi_bp.b_error; 1424 } 1425 *atareq = wi->wi_atareq; 1426 wi_free(wi); 1427 return(error); 1428 } 1429 1430 default: 1431 return ENOTTY; 1432 } 1433 1434 #ifdef DIAGNOSTIC 1435 panic("wdioctl: impossible"); 1436 #endif 1437 } 1438 1439 #ifdef B_FORMAT 1440 int 1441 wdformat(struct buf *bp) 1442 { 1443 1444 bp->b_flags |= B_FORMAT; 1445 return wdstrategy(bp); 1446 } 1447 #endif 1448 1449 int 1450 wdsize(dev) 1451 dev_t dev; 1452 { 1453 struct wd_softc *wd; 1454 int part, omask; 1455 int size; 1456 1457 WDCDEBUG_PRINT(("wdsize\n"), DEBUG_FUNCS); 1458 1459 wd = device_lookup(&wd_cd, WDUNIT(dev)); 1460 if (wd == NULL) 1461 return (-1); 1462 1463 part = WDPART(dev); 1464 omask = wd->sc_dk.dk_openmask & (1 << part); 1465 1466 if (omask == 0 && wdopen(dev, 0, S_IFBLK, NULL) != 0) 1467 return (-1); 1468 if (wd->sc_dk.dk_label->d_partitions[part].p_fstype != FS_SWAP) 1469 size = -1; 1470 else 1471 size = wd->sc_dk.dk_label->d_partitions[part].p_size * 1472 (wd->sc_dk.dk_label->d_secsize / DEV_BSIZE); 1473 if (omask == 0 && wdclose(dev, 0, S_IFBLK, NULL) != 0) 1474 return (-1); 1475 return (size); 1476 } 1477 1478 /* #define WD_DUMP_NOT_TRUSTED if you just want to watch */ 1479 static int wddoingadump = 0; 1480 static int wddumprecalibrated = 0; 1481 static int wddumpmulti = 1; 1482 1483 /* 1484 * Dump core after a system crash. 1485 */ 1486 int 1487 wddump(dev, blkno, va, size) 1488 dev_t dev; 1489 daddr_t blkno; 1490 caddr_t va; 1491 size_t size; 1492 { 1493 struct wd_softc *wd; /* disk unit to do the I/O */ 1494 struct disklabel *lp; /* disk's disklabel */ 1495 int part, err; 1496 int nblks; /* total number of sectors left to write */ 1497 1498 /* Check if recursive dump; if so, punt. */ 1499 if (wddoingadump) 1500 return EFAULT; 1501 wddoingadump = 1; 1502 1503 wd = device_lookup(&wd_cd, WDUNIT(dev)); 1504 if (wd == NULL) 1505 return (ENXIO); 1506 1507 part = WDPART(dev); 1508 1509 /* Convert to disk sectors. Request must be a multiple of size. */ 1510 lp = wd->sc_dk.dk_label; 1511 if ((size % lp->d_secsize) != 0) 1512 return EFAULT; 1513 nblks = size / lp->d_secsize; 1514 blkno = blkno / (lp->d_secsize / DEV_BSIZE); 1515 1516 /* Check transfer bounds against partition size. */ 1517 if ((blkno < 0) || ((blkno + nblks) > lp->d_partitions[part].p_size)) 1518 return EINVAL; 1519 1520 /* Offset block number to start of partition. */ 1521 blkno += lp->d_partitions[part].p_offset; 1522 1523 /* Recalibrate, if first dump transfer. */ 1524 if (wddumprecalibrated == 0) { 1525 wddumpmulti = wd->sc_multi; 1526 wddumprecalibrated = 1; 1527 wd->drvp->state = RESET; 1528 } 1529 1530 while (nblks > 0) { 1531 again: 1532 wd->sc_bp = NULL; 1533 wd->sc_wdc_bio.blkno = blkno; 1534 wd->sc_wdc_bio.flags = ATA_POLL; 1535 if (wddumpmulti == 1) 1536 wd->sc_wdc_bio.flags |= ATA_SINGLE; 1537 if (wd->sc_flags & WDF_LBA48) 1538 wd->sc_wdc_bio.flags |= ATA_LBA48; 1539 if (wd->sc_flags & WDF_LBA) 1540 wd->sc_wdc_bio.flags |= ATA_LBA; 1541 wd->sc_wdc_bio.bcount = 1542 min(nblks, wddumpmulti) * lp->d_secsize; 1543 wd->sc_wdc_bio.databuf = va; 1544 #ifndef WD_DUMP_NOT_TRUSTED 1545 switch (wd->atabus->ata_bio(wd->drvp, &wd->sc_wdc_bio)) { 1546 case WDC_TRY_AGAIN: 1547 panic("wddump: try again"); 1548 break; 1549 case WDC_QUEUED: 1550 panic("wddump: polled command has been queued"); 1551 break; 1552 case WDC_COMPLETE: 1553 break; 1554 } 1555 switch(wd->sc_wdc_bio.error) { 1556 case TIMEOUT: 1557 printf("wddump: device timed out"); 1558 err = EIO; 1559 break; 1560 case ERR_DF: 1561 printf("wddump: drive fault"); 1562 err = EIO; 1563 break; 1564 case ERR_DMA: 1565 printf("wddump: DMA error"); 1566 err = EIO; 1567 break; 1568 case ERROR: 1569 printf("wddump: "); 1570 wdperror(wd); 1571 err = EIO; 1572 break; 1573 case NOERROR: 1574 err = 0; 1575 break; 1576 default: 1577 panic("wddump: unknown error type"); 1578 } 1579 if (err != 0) { 1580 if (wddumpmulti != 1) { 1581 wddumpmulti = 1; /* retry in single-sector */ 1582 printf(", retrying\n"); 1583 goto again; 1584 } 1585 printf("\n"); 1586 return err; 1587 } 1588 #else /* WD_DUMP_NOT_TRUSTED */ 1589 /* Let's just talk about this first... */ 1590 printf("wd%d: dump addr 0x%x, cylin %d, head %d, sector %d\n", 1591 unit, va, cylin, head, sector); 1592 delay(500 * 1000); /* half a second */ 1593 #endif 1594 1595 /* update block count */ 1596 nblks -= min(nblks, wddumpmulti); 1597 blkno += min(nblks, wddumpmulti); 1598 va += min(nblks, wddumpmulti) * lp->d_secsize; 1599 } 1600 1601 wddoingadump = 0; 1602 return 0; 1603 } 1604 1605 #ifdef HAS_BAD144_HANDLING 1606 /* 1607 * Internalize the bad sector table. 1608 */ 1609 void 1610 bad144intern(wd) 1611 struct wd_softc *wd; 1612 { 1613 struct dkbad *bt = &wd->sc_dk.dk_cpulabel->bad; 1614 struct disklabel *lp = wd->sc_dk.dk_label; 1615 int i = 0; 1616 1617 WDCDEBUG_PRINT(("bad144intern\n"), DEBUG_XFERS); 1618 1619 for (; i < NBT_BAD; i++) { 1620 if (bt->bt_bad[i].bt_cyl == 0xffff) 1621 break; 1622 wd->sc_badsect[i] = 1623 bt->bt_bad[i].bt_cyl * lp->d_secpercyl + 1624 (bt->bt_bad[i].bt_trksec >> 8) * lp->d_nsectors + 1625 (bt->bt_bad[i].bt_trksec & 0xff); 1626 } 1627 for (; i < NBT_BAD+1; i++) 1628 wd->sc_badsect[i] = -1; 1629 } 1630 #endif 1631 1632 int 1633 wd_get_params(wd, flags, params) 1634 struct wd_softc *wd; 1635 u_int8_t flags; 1636 struct ataparams *params; 1637 { 1638 switch (wd->atabus->ata_get_params(wd->drvp, flags, params)) { 1639 case CMD_AGAIN: 1640 return 1; 1641 case CMD_ERR: 1642 /* 1643 * We `know' there's a drive here; just assume it's old. 1644 * This geometry is only used to read the MBR and print a 1645 * (false) attach message. 1646 */ 1647 strncpy(params->atap_model, "ST506", 1648 sizeof params->atap_model); 1649 params->atap_config = ATA_CFG_FIXED; 1650 params->atap_cylinders = 1024; 1651 params->atap_heads = 8; 1652 params->atap_sectors = 17; 1653 params->atap_multi = 1; 1654 params->atap_capabilities1 = params->atap_capabilities2 = 0; 1655 wd->drvp->ata_vers = -1; /* Mark it as pre-ATA */ 1656 return 0; 1657 case CMD_OK: 1658 return 0; 1659 default: 1660 panic("wd_get_params: bad return code from ata_get_params"); 1661 /* NOTREACHED */ 1662 } 1663 } 1664 1665 void 1666 wd_flushcache(wd, flags) 1667 struct wd_softc *wd; 1668 int flags; 1669 { 1670 struct wdc_command wdc_c; 1671 1672 if (wd->drvp->ata_vers < 4) /* WDCC_FLUSHCACHE is here since ATA-4 */ 1673 return; 1674 memset(&wdc_c, 0, sizeof(struct wdc_command)); 1675 wdc_c.r_command = WDCC_FLUSHCACHE; 1676 wdc_c.r_st_bmask = WDCS_DRDY; 1677 wdc_c.r_st_pmask = WDCS_DRDY; 1678 wdc_c.flags = flags; 1679 wdc_c.timeout = 30000; /* 30s timeout */ 1680 if (wd->atabus->ata_exec_command(wd->drvp, &wdc_c) != WDC_COMPLETE) { 1681 printf("%s: flush cache command didn't complete\n", 1682 wd->sc_dev.dv_xname); 1683 } 1684 if (wdc_c.flags & AT_TIMEOU) { 1685 printf("%s: flush cache command timeout\n", 1686 wd->sc_dev.dv_xname); 1687 } 1688 if (wdc_c.flags & AT_DF) { 1689 printf("%s: flush cache command: drive fault\n", 1690 wd->sc_dev.dv_xname); 1691 } 1692 /* 1693 * Ignore error register, it shouldn't report anything else 1694 * than COMMAND ABORTED, which means the device doesn't support 1695 * flush cache 1696 */ 1697 } 1698 1699 void 1700 wd_shutdown(arg) 1701 void *arg; 1702 { 1703 struct wd_softc *wd = arg; 1704 wd_flushcache(wd, AT_POLL); 1705 } 1706 1707 /* 1708 * Allocate space for a ioctl queue structure. Mostly taken from 1709 * scsipi_ioctl.c 1710 */ 1711 struct wd_ioctl * 1712 wi_get() 1713 { 1714 struct wd_ioctl *wi; 1715 int s; 1716 1717 wi = malloc(sizeof(struct wd_ioctl), M_TEMP, M_WAITOK|M_ZERO); 1718 simple_lock_init(&wi->wi_bp.b_interlock); 1719 s = splbio(); 1720 LIST_INSERT_HEAD(&wi_head, wi, wi_list); 1721 splx(s); 1722 return (wi); 1723 } 1724 1725 /* 1726 * Free an ioctl structure and remove it from our list 1727 */ 1728 1729 void 1730 wi_free(wi) 1731 struct wd_ioctl *wi; 1732 { 1733 int s; 1734 1735 s = splbio(); 1736 LIST_REMOVE(wi, wi_list); 1737 splx(s); 1738 free(wi, M_TEMP); 1739 } 1740 1741 /* 1742 * Find a wd_ioctl structure based on the struct buf. 1743 */ 1744 1745 struct wd_ioctl * 1746 wi_find(bp) 1747 struct buf *bp; 1748 { 1749 struct wd_ioctl *wi; 1750 int s; 1751 1752 s = splbio(); 1753 for (wi = wi_head.lh_first; wi != 0; wi = wi->wi_list.le_next) 1754 if (bp == &wi->wi_bp) 1755 break; 1756 splx(s); 1757 return (wi); 1758 } 1759 1760 /* 1761 * Ioctl pseudo strategy routine 1762 * 1763 * This is mostly stolen from scsipi_ioctl.c:scsistrategy(). What 1764 * happens here is: 1765 * 1766 * - wdioctl() queues a wd_ioctl structure. 1767 * 1768 * - wdioctl() calls physio/wdioctlstrategy based on whether or not 1769 * user space I/O is required. If physio() is called, physio() eventually 1770 * calls wdioctlstrategy(). 1771 * 1772 * - In either case, wdioctlstrategy() calls wd->atabus->ata_exec_command() 1773 * to perform the actual command 1774 * 1775 * The reason for the use of the pseudo strategy routine is because 1776 * when doing I/O to/from user space, physio _really_ wants to be in 1777 * the loop. We could put the entire buffer into the ioctl request 1778 * structure, but that won't scale if we want to do things like download 1779 * microcode. 1780 */ 1781 1782 void 1783 wdioctlstrategy(bp) 1784 struct buf *bp; 1785 { 1786 struct wd_ioctl *wi; 1787 struct wdc_command wdc_c; 1788 int error = 0; 1789 1790 wi = wi_find(bp); 1791 if (wi == NULL) { 1792 printf("user_strat: No ioctl\n"); 1793 error = EINVAL; 1794 goto bad; 1795 } 1796 1797 memset(&wdc_c, 0, sizeof(wdc_c)); 1798 1799 /* 1800 * Abort if physio broke up the transfer 1801 */ 1802 1803 if (bp->b_bcount != wi->wi_atareq.datalen) { 1804 printf("physio split wd ioctl request... cannot proceed\n"); 1805 error = EIO; 1806 goto bad; 1807 } 1808 1809 /* 1810 * Abort if we didn't get a buffer size that was a multiple of 1811 * our sector size (or was larger than NBBY) 1812 */ 1813 1814 if ((bp->b_bcount % wi->wi_softc->sc_dk.dk_label->d_secsize) != 0 || 1815 (bp->b_bcount / wi->wi_softc->sc_dk.dk_label->d_secsize) >= 1816 (1 << NBBY)) { 1817 error = EINVAL; 1818 goto bad; 1819 } 1820 1821 /* 1822 * Make sure a timeout was supplied in the ioctl request 1823 */ 1824 1825 if (wi->wi_atareq.timeout == 0) { 1826 error = EINVAL; 1827 goto bad; 1828 } 1829 1830 if (wi->wi_atareq.flags & ATACMD_READ) 1831 wdc_c.flags |= AT_READ; 1832 else if (wi->wi_atareq.flags & ATACMD_WRITE) 1833 wdc_c.flags |= AT_WRITE; 1834 1835 if (wi->wi_atareq.flags & ATACMD_READREG) 1836 wdc_c.flags |= AT_READREG; 1837 1838 wdc_c.flags |= AT_WAIT; 1839 1840 wdc_c.timeout = wi->wi_atareq.timeout; 1841 wdc_c.r_command = wi->wi_atareq.command; 1842 wdc_c.r_head = wi->wi_atareq.head & 0x0f; 1843 wdc_c.r_cyl = wi->wi_atareq.cylinder; 1844 wdc_c.r_sector = wi->wi_atareq.sec_num; 1845 wdc_c.r_count = wi->wi_atareq.sec_count; 1846 wdc_c.r_precomp = wi->wi_atareq.features; 1847 wdc_c.r_st_bmask = WDCS_DRDY; 1848 wdc_c.r_st_pmask = WDCS_DRDY; 1849 wdc_c.data = wi->wi_bp.b_data; 1850 wdc_c.bcount = wi->wi_bp.b_bcount; 1851 1852 if (wi->wi_softc->atabus->ata_exec_command(wi->wi_softc->drvp, &wdc_c) 1853 != WDC_COMPLETE) { 1854 wi->wi_atareq.retsts = ATACMD_ERROR; 1855 goto bad; 1856 } 1857 1858 if (wdc_c.flags & (AT_ERROR | AT_TIMEOU | AT_DF)) { 1859 if (wdc_c.flags & AT_ERROR) { 1860 wi->wi_atareq.retsts = ATACMD_ERROR; 1861 wi->wi_atareq.error = wdc_c.r_error; 1862 } else if (wdc_c.flags & AT_DF) 1863 wi->wi_atareq.retsts = ATACMD_DF; 1864 else 1865 wi->wi_atareq.retsts = ATACMD_TIMEOUT; 1866 } else { 1867 wi->wi_atareq.retsts = ATACMD_OK; 1868 if (wi->wi_atareq.flags & ATACMD_READREG) { 1869 wi->wi_atareq.head = wdc_c.r_head ; 1870 wi->wi_atareq.cylinder = wdc_c.r_cyl; 1871 wi->wi_atareq.sec_num = wdc_c.r_sector; 1872 wi->wi_atareq.sec_count = wdc_c.r_count; 1873 wi->wi_atareq.features = wdc_c.r_precomp; 1874 wi->wi_atareq.error = wdc_c.r_error; 1875 } 1876 } 1877 1878 bp->b_error = 0; 1879 biodone(bp); 1880 return; 1881 bad: 1882 bp->b_flags |= B_ERROR; 1883 bp->b_error = error; 1884 biodone(bp); 1885 } 1886
Indexes created Mon Sep 29 18:09:42 GMT 2025