wd.c revision 1.242
1 /* $NetBSD: wd.c,v 1.242 2003/04/15 17:42:44 dogcow 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 1.242 2003/04/15 17:42:44 dogcow 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 } 433 434 /* locate the major number */ 435 bmaj = bdevsw_lookup_major(&wd_bdevsw); 436 cmaj = cdevsw_lookup_major(&wd_cdevsw); 437 438 s = splbio(); 439 440 /* Kill off any queued buffers. */ 441 while ((bp = BUFQ_GET(&sc->sc_q)) != NULL) { 442 bp->b_error = EIO; 443 bp->b_flags |= B_ERROR; 444 bp->b_resid = bp->b_bcount; 445 biodone(bp); 446 } 447 448 bufq_free(&sc->sc_q); 449 450 splx(s); 451 452 /* Nuke the vnodes for any open instances. */ 453 for (i = 0; i < MAXPARTITIONS; i++) { 454 mn = WDMINOR(self->dv_unit, i); 455 vdevgone(bmaj, mn, mn, VBLK); 456 vdevgone(cmaj, mn, mn, VCHR); 457 } 458 459 /* Detach disk. */ 460 disk_detach(&sc->sc_dk); 461 462 /* Get rid of the shutdown hook. */ 463 if (sc->sc_sdhook != NULL) 464 shutdownhook_disestablish(sc->sc_sdhook); 465 466 #if NRND > 0 467 /* Unhook the entropy source. */ 468 rnd_detach_source(&sc->rnd_source); 469 #endif 470 471 return (0); 472 } 473 474 /* 475 * Read/write routine for a buffer. Validates the arguments and schedules the 476 * transfer. Does not wait for the transfer to complete. 477 */ 478 void 479 wdstrategy(bp) 480 struct buf *bp; 481 { 482 struct wd_softc *wd = device_lookup(&wd_cd, WDUNIT(bp->b_dev)); 483 struct disklabel *lp = wd->sc_dk.dk_label; 484 daddr_t blkno; 485 int s; 486 487 WDCDEBUG_PRINT(("wdstrategy (%s)\n", wd->sc_dev.dv_xname), 488 DEBUG_XFERS); 489 490 /* Valid request? */ 491 if (bp->b_blkno < 0 || 492 (bp->b_bcount % lp->d_secsize) != 0 || 493 (bp->b_bcount / lp->d_secsize) >= (1 << NBBY)) { 494 bp->b_error = EINVAL; 495 goto bad; 496 } 497 498 /* If device invalidated (e.g. media change, door open), error. */ 499 if ((wd->sc_flags & WDF_LOADED) == 0) { 500 bp->b_error = EIO; 501 goto bad; 502 } 503 504 /* If it's a null transfer, return immediately. */ 505 if (bp->b_bcount == 0) 506 goto done; 507 508 /* 509 * Do bounds checking, adjust transfer. if error, process. 510 * If end of partition, just return. 511 */ 512 if (WDPART(bp->b_dev) == RAW_PART) { 513 if (bounds_check_with_mediasize(bp, DEV_BSIZE, 514 wd->sc_capacity) <= 0) 515 goto done; 516 } else { 517 if (bounds_check_with_label(bp, wd->sc_dk.dk_label, 518 (wd->sc_flags & (WDF_WLABEL|WDF_LABELLING)) != 0) <= 0) 519 goto done; 520 } 521 522 /* 523 * Now convert the block number to absolute and put it in 524 * terms of the device's logical block size. 525 */ 526 if (lp->d_secsize >= DEV_BSIZE) 527 blkno = bp->b_blkno / (lp->d_secsize / DEV_BSIZE); 528 else 529 blkno = bp->b_blkno * (DEV_BSIZE / lp->d_secsize); 530 531 if (WDPART(bp->b_dev) != RAW_PART) 532 blkno += lp->d_partitions[WDPART(bp->b_dev)].p_offset; 533 534 bp->b_rawblkno = blkno; 535 536 /* 537 * If the transfer about to be attempted contains only a block that 538 * is known to be bad then return an error for the transfer without 539 * even attempting to start a transfer up under the premis that we 540 * will just end up doing more retries for a transfer that will end 541 * up failing again. 542 * XXX:SMP - mutex required to protect with DIOCBSFLUSH 543 */ 544 if (__predict_false(!SLIST_EMPTY(&wd->sc_bslist))) { 545 struct disk_badsectors *dbs; 546 daddr_t maxblk = blkno + bp->b_bcount; 547 548 SLIST_FOREACH(dbs, &wd->sc_bslist, dbs_next) 549 if (dbs->dbs_min >= blkno && dbs->dbs_max < maxblk) 550 goto bad; 551 } 552 553 /* Queue transfer on drive, activate drive and controller if idle. */ 554 s = splbio(); 555 BUFQ_PUT(&wd->sc_q, bp); 556 wdstart(wd); 557 splx(s); 558 return; 559 bad: 560 bp->b_flags |= B_ERROR; 561 done: 562 /* Toss transfer; we're done early. */ 563 bp->b_resid = bp->b_bcount; 564 biodone(bp); 565 } 566 567 /* 568 * Queue a drive for I/O. 569 */ 570 void 571 wdstart(arg) 572 void *arg; 573 { 574 struct wd_softc *wd = arg; 575 struct buf *bp = NULL; 576 577 WDCDEBUG_PRINT(("wdstart %s\n", wd->sc_dev.dv_xname), 578 DEBUG_XFERS); 579 while (wd->openings > 0) { 580 581 /* Is there a buf for us ? */ 582 if ((bp = BUFQ_GET(&wd->sc_q)) == NULL) 583 return; 584 585 /* 586 * Make the command. First lock the device 587 */ 588 wd->openings--; 589 590 wd->retries = 0; 591 __wdstart(wd, bp); 592 } 593 } 594 595 static void 596 wd_split_mod15_write(struct buf *bp) 597 { 598 struct buf *obp = bp->b_private; 599 struct wd_softc *sc = wd_cd.cd_devs[DISKUNIT(obp->b_dev)]; 600 601 if (__predict_false(bp->b_flags & B_ERROR) != 0) { 602 /* 603 * Propagate the error. If this was the first half of 604 * the original transfer, make sure to account for that 605 * in the residual. 606 */ 607 if (bp->b_data == obp->b_data) 608 bp->b_resid += bp->b_bcount; 609 goto done; 610 } 611 612 /* 613 * If this was the second half of the transfer, we're all done! 614 */ 615 if (bp->b_data != obp->b_data) 616 goto done; 617 618 /* 619 * Advance the pointer to the second half and issue that command 620 * using the same opening. 621 */ 622 bp->b_flags = obp->b_flags | B_CALL; 623 bp->b_data += bp->b_bcount; 624 bp->b_blkno += (bp->b_bcount / 512); 625 bp->b_rawblkno += (bp->b_bcount / 512); 626 __wdstart(sc, bp); 627 return; 628 629 done: 630 obp->b_flags |= (bp->b_flags & (B_EINTR|B_ERROR)); 631 obp->b_error = bp->b_error; 632 obp->b_resid = bp->b_resid; 633 pool_put(&bufpool, bp); 634 biodone(obp); 635 sc->openings++; 636 /* wddone() will call wdstart() */ 637 } 638 639 void 640 __wdstart(wd, bp) 641 struct wd_softc *wd; 642 struct buf *bp; 643 { 644 645 /* 646 * Deal with the "split mod15 write" quirk. We just divide the 647 * transfer in two, doing the first half and then then second half 648 * with the same command opening. 649 * 650 * Note we MUST do this here, because we can't let insertion 651 * into the bufq cause the transfers to be re-merged. 652 */ 653 if (__predict_false((wd->sc_quirks & WD_QUIRK_SPLIT_MOD15_WRITE) != 0 && 654 (bp->b_flags & B_READ) == 0 && 655 bp->b_bcount > 512 && 656 ((bp->b_bcount / 512) % 15) == 1)) { 657 struct buf *nbp; 658 659 /* already at splbio */ 660 nbp = pool_get(&bufpool, PR_NOWAIT); 661 if (__predict_false(nbp == NULL)) { 662 /* No memory -- fail the iop. */ 663 bp->b_error = ENOMEM; 664 bp->b_flags |= B_ERROR; 665 bp->b_resid = bp->b_bcount; 666 biodone(bp); 667 wd->openings++; 668 return; 669 } 670 671 BUF_INIT(nbp); 672 nbp->b_error = 0; 673 nbp->b_proc = bp->b_proc; 674 nbp->b_vp = NULLVP; 675 nbp->b_dev = bp->b_dev; 676 677 nbp->b_bcount = bp->b_bcount / 2; 678 nbp->b_bufsize = bp->b_bcount / 2; 679 nbp->b_data = bp->b_data; 680 681 nbp->b_blkno = bp->b_blkno; 682 nbp->b_rawblkno = bp->b_rawblkno; 683 684 nbp->b_flags = bp->b_flags | B_CALL; 685 nbp->b_iodone = wd_split_mod15_write; 686 687 /* Put ptr to orig buf in b_private and use new buf */ 688 nbp->b_private = bp; 689 bp = nbp; 690 } 691 692 wd->sc_wdc_bio.blkno = bp->b_rawblkno; 693 wd->sc_wdc_bio.blkdone =0; 694 wd->sc_bp = bp; 695 /* 696 * If we're retrying, retry in single-sector mode. This will give us 697 * the sector number of the problem, and will eventually allow the 698 * transfer to succeed. 699 */ 700 if (wd->sc_multi == 1 || wd->retries >= WDIORETRIES_SINGLE) 701 wd->sc_wdc_bio.flags = ATA_SINGLE; 702 else 703 wd->sc_wdc_bio.flags = 0; 704 if (wd->sc_flags & WDF_LBA48) 705 wd->sc_wdc_bio.flags |= ATA_LBA48; 706 if (wd->sc_flags & WDF_LBA) 707 wd->sc_wdc_bio.flags |= ATA_LBA; 708 if (bp->b_flags & B_READ) 709 wd->sc_wdc_bio.flags |= ATA_READ; 710 wd->sc_wdc_bio.bcount = bp->b_bcount; 711 wd->sc_wdc_bio.databuf = bp->b_data; 712 /* Instrumentation. */ 713 disk_busy(&wd->sc_dk); 714 switch (wd->atabus->ata_bio(wd->drvp, &wd->sc_wdc_bio)) { 715 case WDC_TRY_AGAIN: 716 callout_reset(&wd->sc_restart_ch, hz, wdrestart, wd); 717 break; 718 case WDC_QUEUED: 719 case WDC_COMPLETE: 720 break; 721 default: 722 panic("__wdstart: bad return code from ata_bio()"); 723 } 724 } 725 726 void 727 wddone(v) 728 void *v; 729 { 730 struct wd_softc *wd = v; 731 struct buf *bp = wd->sc_bp; 732 const char *errmsg; 733 int do_perror = 0; 734 WDCDEBUG_PRINT(("wddone %s\n", wd->sc_dev.dv_xname), 735 DEBUG_XFERS); 736 737 if (bp == NULL) 738 return; 739 bp->b_resid = wd->sc_wdc_bio.bcount; 740 switch (wd->sc_wdc_bio.error) { 741 case ERR_DMA: 742 errmsg = "DMA error"; 743 goto retry; 744 case ERR_DF: 745 errmsg = "device fault"; 746 goto retry; 747 case TIMEOUT: 748 errmsg = "device timeout"; 749 goto retry; 750 case ERROR: 751 /* Don't care about media change bits */ 752 if (wd->sc_wdc_bio.r_error != 0 && 753 (wd->sc_wdc_bio.r_error & ~(WDCE_MC | WDCE_MCR)) == 0) 754 goto noerror; 755 errmsg = "error"; 756 do_perror = 1; 757 retry: /* Just reset and retry. Can we do more ? */ 758 wd->atabus->ata_reset_channel(wd->drvp); 759 diskerr(bp, "wd", errmsg, LOG_PRINTF, 760 wd->sc_wdc_bio.blkdone, wd->sc_dk.dk_label); 761 if (wd->retries < WDIORETRIES) 762 printf(", retrying\n"); 763 if (do_perror) 764 wdperror(wd); 765 if (wd->retries < WDIORETRIES) { 766 wd->retries++; 767 callout_reset(&wd->sc_restart_ch, RECOVERYTIME, 768 wdrestart, wd); 769 return; 770 } 771 printf("\n"); 772 773 /* 774 * Not all errors indicate a failed block but those that do, 775 * put the block on the bad-block list for the device. Only 776 * do this for reads because the drive should do it for writes, 777 * itself, according to Manuel. 778 */ 779 if ((bp->b_flags & B_READ) && 780 ((wd->drvp->ata_vers >= 4 && wd->sc_wdc_bio.r_error & 64) || 781 (wd->drvp->ata_vers < 4 && wd->sc_wdc_bio.r_error & 192))) { 782 struct disk_badsectors *dbs; 783 784 dbs = malloc(sizeof *dbs, M_TEMP, M_WAITOK); 785 dbs->dbs_min = bp->b_rawblkno; 786 dbs->dbs_max = dbs->dbs_min + bp->b_bcount - 1; 787 microtime(&dbs->dbs_failedat); 788 SLIST_INSERT_HEAD(&wd->sc_bslist, dbs, dbs_next); 789 } 790 791 bp->b_flags |= B_ERROR; 792 bp->b_error = EIO; 793 break; 794 case NOERROR: 795 noerror: if ((wd->sc_wdc_bio.flags & ATA_CORR) || wd->retries > 0) 796 printf("%s: soft error (corrected)\n", 797 wd->sc_dev.dv_xname); 798 break; 799 case ERR_NODEV: 800 bp->b_flags |= B_ERROR; 801 bp->b_error = EIO; 802 break; 803 } 804 disk_unbusy(&wd->sc_dk, (bp->b_bcount - bp->b_resid), 805 (bp->b_flags & B_READ)); 806 #if NRND > 0 807 rnd_add_uint32(&wd->rnd_source, bp->b_blkno); 808 #endif 809 /* XXX Yuck, but we don't want to increment openings in this case */ 810 if (__predict_false((bp->b_flags & B_CALL) != 0 && 811 bp->b_iodone == wd_split_mod15_write)) 812 biodone(bp); 813 else { 814 biodone(bp); 815 wd->openings++; 816 } 817 wdstart(wd); 818 } 819 820 void 821 wdrestart(v) 822 void *v; 823 { 824 struct wd_softc *wd = v; 825 struct buf *bp = wd->sc_bp; 826 int s; 827 WDCDEBUG_PRINT(("wdrestart %s\n", wd->sc_dev.dv_xname), 828 DEBUG_XFERS); 829 830 s = splbio(); 831 __wdstart(v, bp); 832 splx(s); 833 } 834 835 int 836 wdread(dev, uio, flags) 837 dev_t dev; 838 struct uio *uio; 839 int flags; 840 { 841 842 WDCDEBUG_PRINT(("wdread\n"), DEBUG_XFERS); 843 return (physio(wdstrategy, NULL, dev, B_READ, minphys, uio)); 844 } 845 846 int 847 wdwrite(dev, uio, flags) 848 dev_t dev; 849 struct uio *uio; 850 int flags; 851 { 852 853 WDCDEBUG_PRINT(("wdwrite\n"), DEBUG_XFERS); 854 return (physio(wdstrategy, NULL, dev, B_WRITE, minphys, uio)); 855 } 856 857 /* 858 * Wait interruptibly for an exclusive lock. 859 * 860 * XXX 861 * Several drivers do this; it should be abstracted and made MP-safe. 862 */ 863 int 864 wdlock(wd) 865 struct wd_softc *wd; 866 { 867 int error; 868 int s; 869 870 WDCDEBUG_PRINT(("wdlock\n"), DEBUG_FUNCS); 871 872 s = splbio(); 873 874 while ((wd->sc_flags & WDF_LOCKED) != 0) { 875 wd->sc_flags |= WDF_WANTED; 876 if ((error = tsleep(wd, PRIBIO | PCATCH, 877 "wdlck", 0)) != 0) { 878 splx(s); 879 return error; 880 } 881 } 882 wd->sc_flags |= WDF_LOCKED; 883 splx(s); 884 return 0; 885 } 886 887 /* 888 * Unlock and wake up any waiters. 889 */ 890 void 891 wdunlock(wd) 892 struct wd_softc *wd; 893 { 894 895 WDCDEBUG_PRINT(("wdunlock\n"), DEBUG_FUNCS); 896 897 wd->sc_flags &= ~WDF_LOCKED; 898 if ((wd->sc_flags & WDF_WANTED) != 0) { 899 wd->sc_flags &= ~WDF_WANTED; 900 wakeup(wd); 901 } 902 } 903 904 int 905 wdopen(dev, flag, fmt, p) 906 dev_t dev; 907 int flag, fmt; 908 struct proc *p; 909 { 910 struct wd_softc *wd; 911 int part, error; 912 913 WDCDEBUG_PRINT(("wdopen\n"), DEBUG_FUNCS); 914 wd = device_lookup(&wd_cd, WDUNIT(dev)); 915 if (wd == NULL) 916 return (ENXIO); 917 918 /* 919 * If this is the first open of this device, add a reference 920 * to the adapter. 921 */ 922 if (wd->sc_dk.dk_openmask == 0 && 923 (error = wd->atabus->ata_addref(wd->drvp)) != 0) 924 return (error); 925 926 if ((error = wdlock(wd)) != 0) 927 goto bad4; 928 929 if (wd->sc_dk.dk_openmask != 0) { 930 /* 931 * If any partition is open, but the disk has been invalidated, 932 * disallow further opens. 933 */ 934 if ((wd->sc_flags & WDF_LOADED) == 0) { 935 error = EIO; 936 goto bad3; 937 } 938 } else { 939 if ((wd->sc_flags & WDF_LOADED) == 0) { 940 wd->sc_flags |= WDF_LOADED; 941 942 /* Load the physical device parameters. */ 943 wd_get_params(wd, AT_WAIT, &wd->sc_params); 944 945 /* Load the partition info if not already loaded. */ 946 wdgetdisklabel(wd); 947 } 948 } 949 950 part = WDPART(dev); 951 952 /* Check that the partition exists. */ 953 if (part != RAW_PART && 954 (part >= wd->sc_dk.dk_label->d_npartitions || 955 wd->sc_dk.dk_label->d_partitions[part].p_fstype == FS_UNUSED)) { 956 error = ENXIO; 957 goto bad; 958 } 959 960 /* Insure only one open at a time. */ 961 switch (fmt) { 962 case S_IFCHR: 963 wd->sc_dk.dk_copenmask |= (1 << part); 964 break; 965 case S_IFBLK: 966 wd->sc_dk.dk_bopenmask |= (1 << part); 967 break; 968 } 969 wd->sc_dk.dk_openmask = 970 wd->sc_dk.dk_copenmask | wd->sc_dk.dk_bopenmask; 971 972 wdunlock(wd); 973 return 0; 974 975 bad: 976 if (wd->sc_dk.dk_openmask == 0) { 977 } 978 979 bad3: 980 wdunlock(wd); 981 bad4: 982 if (wd->sc_dk.dk_openmask == 0) 983 wd->atabus->ata_delref(wd->drvp); 984 return error; 985 } 986 987 int 988 wdclose(dev, flag, fmt, p) 989 dev_t dev; 990 int flag, fmt; 991 struct proc *p; 992 { 993 struct wd_softc *wd = device_lookup(&wd_cd, WDUNIT(dev)); 994 int part = WDPART(dev); 995 int error; 996 997 WDCDEBUG_PRINT(("wdclose\n"), DEBUG_FUNCS); 998 if ((error = wdlock(wd)) != 0) 999 return error; 1000 1001 switch (fmt) { 1002 case S_IFCHR: 1003 wd->sc_dk.dk_copenmask &= ~(1 << part); 1004 break; 1005 case S_IFBLK: 1006 wd->sc_dk.dk_bopenmask &= ~(1 << part); 1007 break; 1008 } 1009 wd->sc_dk.dk_openmask = 1010 wd->sc_dk.dk_copenmask | wd->sc_dk.dk_bopenmask; 1011 1012 if (wd->sc_dk.dk_openmask == 0) { 1013 wd_flushcache(wd, AT_WAIT); 1014 /* XXXX Must wait for I/O to complete! */ 1015 1016 if (! (wd->sc_flags & WDF_KLABEL)) 1017 wd->sc_flags &= ~WDF_LOADED; 1018 1019 wd->atabus->ata_delref(wd->drvp); 1020 } 1021 1022 wdunlock(wd); 1023 return 0; 1024 } 1025 1026 void 1027 wdgetdefaultlabel(wd, lp) 1028 struct wd_softc *wd; 1029 struct disklabel *lp; 1030 { 1031 1032 WDCDEBUG_PRINT(("wdgetdefaultlabel\n"), DEBUG_FUNCS); 1033 memset(lp, 0, sizeof(struct disklabel)); 1034 1035 lp->d_secsize = DEV_BSIZE; 1036 lp->d_ntracks = wd->sc_params.atap_heads; 1037 lp->d_nsectors = wd->sc_params.atap_sectors; 1038 lp->d_ncylinders = wd->sc_params.atap_cylinders; 1039 lp->d_secpercyl = lp->d_ntracks * lp->d_nsectors; 1040 1041 if (strcmp(wd->sc_params.atap_model, "ST506") == 0) 1042 lp->d_type = DTYPE_ST506; 1043 else 1044 lp->d_type = DTYPE_ESDI; 1045 1046 strncpy(lp->d_typename, wd->sc_params.atap_model, 16); 1047 strncpy(lp->d_packname, "fictitious", 16); 1048 if (wd->sc_capacity > UINT32_MAX) 1049 lp->d_secperunit = UINT32_MAX; 1050 else 1051 lp->d_secperunit = wd->sc_capacity; 1052 lp->d_rpm = 3600; 1053 lp->d_interleave = 1; 1054 lp->d_flags = 0; 1055 1056 lp->d_partitions[RAW_PART].p_offset = 0; 1057 lp->d_partitions[RAW_PART].p_size = 1058 lp->d_secperunit * (lp->d_secsize / DEV_BSIZE); 1059 lp->d_partitions[RAW_PART].p_fstype = FS_UNUSED; 1060 lp->d_npartitions = RAW_PART + 1; 1061 1062 lp->d_magic = DISKMAGIC; 1063 lp->d_magic2 = DISKMAGIC; 1064 lp->d_checksum = dkcksum(lp); 1065 } 1066 1067 /* 1068 * Fabricate a default disk label, and try to read the correct one. 1069 */ 1070 void 1071 wdgetdisklabel(wd) 1072 struct wd_softc *wd; 1073 { 1074 struct disklabel *lp = wd->sc_dk.dk_label; 1075 char *errstring; 1076 1077 WDCDEBUG_PRINT(("wdgetdisklabel\n"), DEBUG_FUNCS); 1078 1079 memset(wd->sc_dk.dk_cpulabel, 0, sizeof(struct cpu_disklabel)); 1080 1081 wdgetdefaultlabel(wd, lp); 1082 1083 wd->sc_badsect[0] = -1; 1084 1085 if (wd->drvp->state > RECAL) 1086 wd->drvp->drive_flags |= DRIVE_RESET; 1087 errstring = readdisklabel(MAKEWDDEV(0, wd->sc_dev.dv_unit, RAW_PART), 1088 wdstrategy, lp, wd->sc_dk.dk_cpulabel); 1089 if (errstring) { 1090 /* 1091 * This probably happened because the drive's default 1092 * geometry doesn't match the DOS geometry. We 1093 * assume the DOS geometry is now in the label and try 1094 * again. XXX This is a kluge. 1095 */ 1096 if (wd->drvp->state > RECAL) 1097 wd->drvp->drive_flags |= DRIVE_RESET; 1098 errstring = readdisklabel(MAKEWDDEV(0, wd->sc_dev.dv_unit, 1099 RAW_PART), wdstrategy, lp, wd->sc_dk.dk_cpulabel); 1100 } 1101 if (errstring) { 1102 printf("%s: %s\n", wd->sc_dev.dv_xname, errstring); 1103 return; 1104 } 1105 1106 if (wd->drvp->state > RECAL) 1107 wd->drvp->drive_flags |= DRIVE_RESET; 1108 #ifdef HAS_BAD144_HANDLING 1109 if ((lp->d_flags & D_BADSECT) != 0) 1110 bad144intern(wd); 1111 #endif 1112 } 1113 1114 void 1115 wdperror(wd) 1116 const struct wd_softc *wd; 1117 { 1118 static const char *const errstr0_3[] = {"address mark not found", 1119 "track 0 not found", "aborted command", "media change requested", 1120 "id not found", "media changed", "uncorrectable data error", 1121 "bad block detected"}; 1122 static const char *const errstr4_5[] = { 1123 "obsolete (address mark not found)", 1124 "no media/write protected", "aborted command", 1125 "media change requested", "id not found", "media changed", 1126 "uncorrectable data error", "interface CRC error"}; 1127 const char *const *errstr; 1128 int i; 1129 char *sep = ""; 1130 1131 const char *devname = wd->sc_dev.dv_xname; 1132 struct ata_drive_datas *drvp = wd->drvp; 1133 int errno = wd->sc_wdc_bio.r_error; 1134 1135 if (drvp->ata_vers >= 4) 1136 errstr = errstr4_5; 1137 else 1138 errstr = errstr0_3; 1139 1140 printf("%s: (", devname); 1141 1142 if (errno == 0) 1143 printf("error not notified"); 1144 1145 for (i = 0; i < 8; i++) { 1146 if (errno & (1 << i)) { 1147 printf("%s%s", sep, errstr[i]); 1148 sep = ", "; 1149 } 1150 } 1151 printf(")\n"); 1152 } 1153 1154 int 1155 wdioctl(dev, xfer, addr, flag, p) 1156 dev_t dev; 1157 u_long xfer; 1158 caddr_t addr; 1159 int flag; 1160 struct proc *p; 1161 { 1162 struct wd_softc *wd = device_lookup(&wd_cd, WDUNIT(dev)); 1163 int error = 0; 1164 #ifdef __HAVE_OLD_DISKLABEL 1165 struct disklabel *newlabel = NULL; 1166 #endif 1167 1168 WDCDEBUG_PRINT(("wdioctl\n"), DEBUG_FUNCS); 1169 1170 if ((wd->sc_flags & WDF_LOADED) == 0) 1171 return EIO; 1172 1173 switch (xfer) { 1174 #ifdef HAS_BAD144_HANDLING 1175 case DIOCSBAD: 1176 if ((flag & FWRITE) == 0) 1177 return EBADF; 1178 wd->sc_dk.dk_cpulabel->bad = *(struct dkbad *)addr; 1179 wd->sc_dk.dk_label->d_flags |= D_BADSECT; 1180 bad144intern(wd); 1181 return 0; 1182 #endif 1183 1184 case DIOCBSLIST : 1185 { 1186 caddr_t laddr = *(caddr_t *)addr; 1187 struct disk_badsectors *dbs; 1188 size_t available; 1189 u_int32_t count; 1190 1191 count = 0; 1192 copyin(laddr, &available, sizeof(available)); 1193 laddr += sizeof(count); 1194 SLIST_FOREACH(dbs, &wd->sc_bslist, dbs_next) { 1195 if (available < sizeof(dbs)) 1196 break; 1197 available -= sizeof(dbs); 1198 copyout(dbs, laddr, sizeof(*dbs)); 1199 laddr += sizeof(*dbs); 1200 count++; 1201 } 1202 copyout(&count, *(caddr_t *)addr, sizeof(count)); 1203 return 0; 1204 } 1205 1206 case DIOCBSFLUSH : 1207 /* Clean out the bad sector list */ 1208 while (!SLIST_EMPTY(&wd->sc_bslist)) { 1209 void *head = SLIST_FIRST(&wd->sc_bslist); 1210 SLIST_REMOVE_HEAD(&wd->sc_bslist, dbs_next); 1211 free(head, M_TEMP); 1212 } 1213 return 0; 1214 1215 case DIOCGDINFO: 1216 *(struct disklabel *)addr = *(wd->sc_dk.dk_label); 1217 return 0; 1218 #ifdef __HAVE_OLD_DISKLABEL 1219 case ODIOCGDINFO: 1220 newlabel = malloc(sizeof *newlabel, M_TEMP, M_WAITOK); 1221 if (newlabel == NULL) 1222 return EIO; 1223 *newlabel = *(wd->sc_dk.dk_label); 1224 if (newlabel->d_npartitions <= OLDMAXPARTITIONS) 1225 memcpy(addr, newlabel, sizeof (struct olddisklabel)); 1226 else 1227 error = ENOTTY; 1228 free(newlabel, M_TEMP); 1229 return error; 1230 #endif 1231 1232 case DIOCGPART: 1233 ((struct partinfo *)addr)->disklab = wd->sc_dk.dk_label; 1234 ((struct partinfo *)addr)->part = 1235 &wd->sc_dk.dk_label->d_partitions[WDPART(dev)]; 1236 return 0; 1237 1238 case DIOCWDINFO: 1239 case DIOCSDINFO: 1240 #ifdef __HAVE_OLD_DISKLABEL 1241 case ODIOCWDINFO: 1242 case ODIOCSDINFO: 1243 #endif 1244 { 1245 struct disklabel *lp; 1246 1247 if ((flag & FWRITE) == 0) 1248 return EBADF; 1249 1250 #ifdef __HAVE_OLD_DISKLABEL 1251 if (xfer == ODIOCSDINFO || xfer == ODIOCWDINFO) { 1252 newlabel = malloc(sizeof *newlabel, M_TEMP, M_WAITOK); 1253 if (newlabel == NULL) 1254 return EIO; 1255 memset(newlabel, 0, sizeof newlabel); 1256 memcpy(newlabel, addr, sizeof (struct olddisklabel)); 1257 lp = newlabel; 1258 } else 1259 #endif 1260 lp = (struct disklabel *)addr; 1261 1262 if ((error = wdlock(wd)) != 0) 1263 goto bad; 1264 wd->sc_flags |= WDF_LABELLING; 1265 1266 error = setdisklabel(wd->sc_dk.dk_label, 1267 lp, /*wd->sc_dk.dk_openmask : */0, 1268 wd->sc_dk.dk_cpulabel); 1269 if (error == 0) { 1270 if (wd->drvp->state > RECAL) 1271 wd->drvp->drive_flags |= DRIVE_RESET; 1272 if (xfer == DIOCWDINFO 1273 #ifdef __HAVE_OLD_DISKLABEL 1274 || xfer == ODIOCWDINFO 1275 #endif 1276 ) 1277 error = writedisklabel(WDLABELDEV(dev), 1278 wdstrategy, wd->sc_dk.dk_label, 1279 wd->sc_dk.dk_cpulabel); 1280 } 1281 1282 wd->sc_flags &= ~WDF_LABELLING; 1283 wdunlock(wd); 1284 bad: 1285 #ifdef __HAVE_OLD_DISKLABEL 1286 if (newlabel != NULL) 1287 free(newlabel, M_TEMP); 1288 #endif 1289 return error; 1290 } 1291 1292 case DIOCKLABEL: 1293 if (*(int *)addr) 1294 wd->sc_flags |= WDF_KLABEL; 1295 else 1296 wd->sc_flags &= ~WDF_KLABEL; 1297 return 0; 1298 1299 case DIOCWLABEL: 1300 if ((flag & FWRITE) == 0) 1301 return EBADF; 1302 if (*(int *)addr) 1303 wd->sc_flags |= WDF_WLABEL; 1304 else 1305 wd->sc_flags &= ~WDF_WLABEL; 1306 return 0; 1307 1308 case DIOCGDEFLABEL: 1309 wdgetdefaultlabel(wd, (struct disklabel *)addr); 1310 return 0; 1311 #ifdef __HAVE_OLD_DISKLABEL 1312 case ODIOCGDEFLABEL: 1313 newlabel = malloc(sizeof *newlabel, M_TEMP, M_WAITOK); 1314 if (newlabel == NULL) 1315 return EIO; 1316 wdgetdefaultlabel(wd, newlabel); 1317 if (newlabel->d_npartitions <= OLDMAXPARTITIONS) 1318 memcpy(addr, &newlabel, sizeof (struct olddisklabel)); 1319 else 1320 error = ENOTTY; 1321 free(newlabel, M_TEMP); 1322 return error; 1323 #endif 1324 1325 #ifdef notyet 1326 case DIOCWFORMAT: 1327 if ((flag & FWRITE) == 0) 1328 return EBADF; 1329 { 1330 register struct format_op *fop; 1331 struct iovec aiov; 1332 struct uio auio; 1333 1334 fop = (struct format_op *)addr; 1335 aiov.iov_base = fop->df_buf; 1336 aiov.iov_len = fop->df_count; 1337 auio.uio_iov = &aiov; 1338 auio.uio_iovcnt = 1; 1339 auio.uio_resid = fop->df_count; 1340 auio.uio_segflg = 0; 1341 auio.uio_offset = 1342 fop->df_startblk * wd->sc_dk.dk_label->d_secsize; 1343 auio.uio_procp = p; 1344 error = physio(wdformat, NULL, dev, B_WRITE, minphys, 1345 &auio); 1346 fop->df_count -= auio.uio_resid; 1347 fop->df_reg[0] = wdc->sc_status; 1348 fop->df_reg[1] = wdc->sc_error; 1349 return error; 1350 } 1351 #endif 1352 1353 case ATAIOCCOMMAND: 1354 /* 1355 * Make sure this command is (relatively) safe first 1356 */ 1357 if ((((atareq_t *) addr)->flags & ATACMD_READ) == 0 && 1358 (flag & FWRITE) == 0) 1359 return (EBADF); 1360 { 1361 struct wd_ioctl *wi; 1362 atareq_t *atareq = (atareq_t *) addr; 1363 int error; 1364 1365 wi = wi_get(); 1366 wi->wi_softc = wd; 1367 wi->wi_atareq = *atareq; 1368 1369 if (atareq->datalen && atareq->flags & 1370 (ATACMD_READ | ATACMD_WRITE)) { 1371 wi->wi_iov.iov_base = atareq->databuf; 1372 wi->wi_iov.iov_len = atareq->datalen; 1373 wi->wi_uio.uio_iov = &wi->wi_iov; 1374 wi->wi_uio.uio_iovcnt = 1; 1375 wi->wi_uio.uio_resid = atareq->datalen; 1376 wi->wi_uio.uio_offset = 0; 1377 wi->wi_uio.uio_segflg = UIO_USERSPACE; 1378 wi->wi_uio.uio_rw = 1379 (atareq->flags & ATACMD_READ) ? B_READ : B_WRITE; 1380 wi->wi_uio.uio_procp = p; 1381 error = physio(wdioctlstrategy, &wi->wi_bp, dev, 1382 (atareq->flags & ATACMD_READ) ? B_READ : B_WRITE, 1383 minphys, &wi->wi_uio); 1384 } else { 1385 /* No need to call physio if we don't have any 1386 user data */ 1387 wi->wi_bp.b_flags = 0; 1388 wi->wi_bp.b_data = 0; 1389 wi->wi_bp.b_bcount = 0; 1390 wi->wi_bp.b_dev = 0; 1391 wi->wi_bp.b_proc = p; 1392 wdioctlstrategy(&wi->wi_bp); 1393 error = wi->wi_bp.b_error; 1394 } 1395 *atareq = wi->wi_atareq; 1396 wi_free(wi); 1397 return(error); 1398 } 1399 1400 default: 1401 return ENOTTY; 1402 } 1403 1404 #ifdef DIAGNOSTIC 1405 panic("wdioctl: impossible"); 1406 #endif 1407 } 1408 1409 #ifdef B_FORMAT 1410 int 1411 wdformat(struct buf *bp) 1412 { 1413 1414 bp->b_flags |= B_FORMAT; 1415 return wdstrategy(bp); 1416 } 1417 #endif 1418 1419 int 1420 wdsize(dev) 1421 dev_t dev; 1422 { 1423 struct wd_softc *wd; 1424 int part, omask; 1425 int size; 1426 1427 WDCDEBUG_PRINT(("wdsize\n"), DEBUG_FUNCS); 1428 1429 wd = device_lookup(&wd_cd, WDUNIT(dev)); 1430 if (wd == NULL) 1431 return (-1); 1432 1433 part = WDPART(dev); 1434 omask = wd->sc_dk.dk_openmask & (1 << part); 1435 1436 if (omask == 0 && wdopen(dev, 0, S_IFBLK, NULL) != 0) 1437 return (-1); 1438 if (wd->sc_dk.dk_label->d_partitions[part].p_fstype != FS_SWAP) 1439 size = -1; 1440 else 1441 size = wd->sc_dk.dk_label->d_partitions[part].p_size * 1442 (wd->sc_dk.dk_label->d_secsize / DEV_BSIZE); 1443 if (omask == 0 && wdclose(dev, 0, S_IFBLK, NULL) != 0) 1444 return (-1); 1445 return (size); 1446 } 1447 1448 /* #define WD_DUMP_NOT_TRUSTED if you just want to watch */ 1449 static int wddoingadump = 0; 1450 static int wddumprecalibrated = 0; 1451 static int wddumpmulti = 1; 1452 1453 /* 1454 * Dump core after a system crash. 1455 */ 1456 int 1457 wddump(dev, blkno, va, size) 1458 dev_t dev; 1459 daddr_t blkno; 1460 caddr_t va; 1461 size_t size; 1462 { 1463 struct wd_softc *wd; /* disk unit to do the I/O */ 1464 struct disklabel *lp; /* disk's disklabel */ 1465 int part, err; 1466 int nblks; /* total number of sectors left to write */ 1467 1468 /* Check if recursive dump; if so, punt. */ 1469 if (wddoingadump) 1470 return EFAULT; 1471 wddoingadump = 1; 1472 1473 wd = device_lookup(&wd_cd, WDUNIT(dev)); 1474 if (wd == NULL) 1475 return (ENXIO); 1476 1477 part = WDPART(dev); 1478 1479 /* Convert to disk sectors. Request must be a multiple of size. */ 1480 lp = wd->sc_dk.dk_label; 1481 if ((size % lp->d_secsize) != 0) 1482 return EFAULT; 1483 nblks = size / lp->d_secsize; 1484 blkno = blkno / (lp->d_secsize / DEV_BSIZE); 1485 1486 /* Check transfer bounds against partition size. */ 1487 if ((blkno < 0) || ((blkno + nblks) > lp->d_partitions[part].p_size)) 1488 return EINVAL; 1489 1490 /* Offset block number to start of partition. */ 1491 blkno += lp->d_partitions[part].p_offset; 1492 1493 /* Recalibrate, if first dump transfer. */ 1494 if (wddumprecalibrated == 0) { 1495 wddumpmulti = wd->sc_multi; 1496 wddumprecalibrated = 1; 1497 wd->drvp->state = RESET; 1498 } 1499 1500 while (nblks > 0) { 1501 again: 1502 wd->sc_bp = NULL; 1503 wd->sc_wdc_bio.blkno = blkno; 1504 wd->sc_wdc_bio.flags = ATA_POLL; 1505 if (wddumpmulti == 1) 1506 wd->sc_wdc_bio.flags |= ATA_SINGLE; 1507 if (wd->sc_flags & WDF_LBA48) 1508 wd->sc_wdc_bio.flags |= ATA_LBA48; 1509 if (wd->sc_flags & WDF_LBA) 1510 wd->sc_wdc_bio.flags |= ATA_LBA; 1511 wd->sc_wdc_bio.bcount = 1512 min(nblks, wddumpmulti) * lp->d_secsize; 1513 wd->sc_wdc_bio.databuf = va; 1514 #ifndef WD_DUMP_NOT_TRUSTED 1515 switch (wd->atabus->ata_bio(wd->drvp, &wd->sc_wdc_bio)) { 1516 case WDC_TRY_AGAIN: 1517 panic("wddump: try again"); 1518 break; 1519 case WDC_QUEUED: 1520 panic("wddump: polled command has been queued"); 1521 break; 1522 case WDC_COMPLETE: 1523 break; 1524 } 1525 switch(wd->sc_wdc_bio.error) { 1526 case TIMEOUT: 1527 printf("wddump: device timed out"); 1528 err = EIO; 1529 break; 1530 case ERR_DF: 1531 printf("wddump: drive fault"); 1532 err = EIO; 1533 break; 1534 case ERR_DMA: 1535 printf("wddump: DMA error"); 1536 err = EIO; 1537 break; 1538 case ERROR: 1539 printf("wddump: "); 1540 wdperror(wd); 1541 err = EIO; 1542 break; 1543 case NOERROR: 1544 err = 0; 1545 break; 1546 default: 1547 panic("wddump: unknown error type"); 1548 } 1549 if (err != 0) { 1550 if (wddumpmulti != 1) { 1551 wddumpmulti = 1; /* retry in single-sector */ 1552 printf(", retrying\n"); 1553 goto again; 1554 } 1555 printf("\n"); 1556 return err; 1557 } 1558 #else /* WD_DUMP_NOT_TRUSTED */ 1559 /* Let's just talk about this first... */ 1560 printf("wd%d: dump addr 0x%x, cylin %d, head %d, sector %d\n", 1561 unit, va, cylin, head, sector); 1562 delay(500 * 1000); /* half a second */ 1563 #endif 1564 1565 /* update block count */ 1566 nblks -= min(nblks, wddumpmulti); 1567 blkno += min(nblks, wddumpmulti); 1568 va += min(nblks, wddumpmulti) * lp->d_secsize; 1569 } 1570 1571 wddoingadump = 0; 1572 return 0; 1573 } 1574 1575 #ifdef HAS_BAD144_HANDLING 1576 /* 1577 * Internalize the bad sector table. 1578 */ 1579 void 1580 bad144intern(wd) 1581 struct wd_softc *wd; 1582 { 1583 struct dkbad *bt = &wd->sc_dk.dk_cpulabel->bad; 1584 struct disklabel *lp = wd->sc_dk.dk_label; 1585 int i = 0; 1586 1587 WDCDEBUG_PRINT(("bad144intern\n"), DEBUG_XFERS); 1588 1589 for (; i < NBT_BAD; i++) { 1590 if (bt->bt_bad[i].bt_cyl == 0xffff) 1591 break; 1592 wd->sc_badsect[i] = 1593 bt->bt_bad[i].bt_cyl * lp->d_secpercyl + 1594 (bt->bt_bad[i].bt_trksec >> 8) * lp->d_nsectors + 1595 (bt->bt_bad[i].bt_trksec & 0xff); 1596 } 1597 for (; i < NBT_BAD+1; i++) 1598 wd->sc_badsect[i] = -1; 1599 } 1600 #endif 1601 1602 int 1603 wd_get_params(wd, flags, params) 1604 struct wd_softc *wd; 1605 u_int8_t flags; 1606 struct ataparams *params; 1607 { 1608 switch (wd->atabus->ata_get_params(wd->drvp, flags, params)) { 1609 case CMD_AGAIN: 1610 return 1; 1611 case CMD_ERR: 1612 /* 1613 * We `know' there's a drive here; just assume it's old. 1614 * This geometry is only used to read the MBR and print a 1615 * (false) attach message. 1616 */ 1617 strncpy(params->atap_model, "ST506", 1618 sizeof params->atap_model); 1619 params->atap_config = ATA_CFG_FIXED; 1620 params->atap_cylinders = 1024; 1621 params->atap_heads = 8; 1622 params->atap_sectors = 17; 1623 params->atap_multi = 1; 1624 params->atap_capabilities1 = params->atap_capabilities2 = 0; 1625 wd->drvp->ata_vers = -1; /* Mark it as pre-ATA */ 1626 return 0; 1627 case CMD_OK: 1628 return 0; 1629 default: 1630 panic("wd_get_params: bad return code from ata_get_params"); 1631 /* NOTREACHED */ 1632 } 1633 } 1634 1635 void 1636 wd_flushcache(wd, flags) 1637 struct wd_softc *wd; 1638 int flags; 1639 { 1640 struct wdc_command wdc_c; 1641 1642 if (wd->drvp->ata_vers < 4) /* WDCC_FLUSHCACHE is here since ATA-4 */ 1643 return; 1644 memset(&wdc_c, 0, sizeof(struct wdc_command)); 1645 wdc_c.r_command = WDCC_FLUSHCACHE; 1646 wdc_c.r_st_bmask = WDCS_DRDY; 1647 wdc_c.r_st_pmask = WDCS_DRDY; 1648 wdc_c.flags = flags; 1649 wdc_c.timeout = 30000; /* 30s timeout */ 1650 if (wd->atabus->ata_exec_command(wd->drvp, &wdc_c) != WDC_COMPLETE) { 1651 printf("%s: flush cache command didn't complete\n", 1652 wd->sc_dev.dv_xname); 1653 } 1654 if (wdc_c.flags & AT_TIMEOU) { 1655 printf("%s: flush cache command timeout\n", 1656 wd->sc_dev.dv_xname); 1657 } 1658 if (wdc_c.flags & AT_DF) { 1659 printf("%s: flush cache command: drive fault\n", 1660 wd->sc_dev.dv_xname); 1661 } 1662 /* 1663 * Ignore error register, it shouldn't report anything else 1664 * than COMMAND ABORTED, which means the device doesn't support 1665 * flush cache 1666 */ 1667 } 1668 1669 void 1670 wd_shutdown(arg) 1671 void *arg; 1672 { 1673 struct wd_softc *wd = arg; 1674 wd_flushcache(wd, AT_POLL); 1675 } 1676 1677 /* 1678 * Allocate space for a ioctl queue structure. Mostly taken from 1679 * scsipi_ioctl.c 1680 */ 1681 struct wd_ioctl * 1682 wi_get() 1683 { 1684 struct wd_ioctl *wi; 1685 int s; 1686 1687 wi = malloc(sizeof(struct wd_ioctl), M_TEMP, M_WAITOK|M_ZERO); 1688 simple_lock_init(&wi->wi_bp.b_interlock); 1689 s = splbio(); 1690 LIST_INSERT_HEAD(&wi_head, wi, wi_list); 1691 splx(s); 1692 return (wi); 1693 } 1694 1695 /* 1696 * Free an ioctl structure and remove it from our list 1697 */ 1698 1699 void 1700 wi_free(wi) 1701 struct wd_ioctl *wi; 1702 { 1703 int s; 1704 1705 s = splbio(); 1706 LIST_REMOVE(wi, wi_list); 1707 splx(s); 1708 free(wi, M_TEMP); 1709 } 1710 1711 /* 1712 * Find a wd_ioctl structure based on the struct buf. 1713 */ 1714 1715 struct wd_ioctl * 1716 wi_find(bp) 1717 struct buf *bp; 1718 { 1719 struct wd_ioctl *wi; 1720 int s; 1721 1722 s = splbio(); 1723 for (wi = wi_head.lh_first; wi != 0; wi = wi->wi_list.le_next) 1724 if (bp == &wi->wi_bp) 1725 break; 1726 splx(s); 1727 return (wi); 1728 } 1729 1730 /* 1731 * Ioctl pseudo strategy routine 1732 * 1733 * This is mostly stolen from scsipi_ioctl.c:scsistrategy(). What 1734 * happens here is: 1735 * 1736 * - wdioctl() queues a wd_ioctl structure. 1737 * 1738 * - wdioctl() calls physio/wdioctlstrategy based on whether or not 1739 * user space I/O is required. If physio() is called, physio() eventually 1740 * calls wdioctlstrategy(). 1741 * 1742 * - In either case, wdioctlstrategy() calls wd->atabus->ata_exec_command() 1743 * to perform the actual command 1744 * 1745 * The reason for the use of the pseudo strategy routine is because 1746 * when doing I/O to/from user space, physio _really_ wants to be in 1747 * the loop. We could put the entire buffer into the ioctl request 1748 * structure, but that won't scale if we want to do things like download 1749 * microcode. 1750 */ 1751 1752 void 1753 wdioctlstrategy(bp) 1754 struct buf *bp; 1755 { 1756 struct wd_ioctl *wi; 1757 struct wdc_command wdc_c; 1758 int error = 0; 1759 1760 wi = wi_find(bp); 1761 if (wi == NULL) { 1762 printf("user_strat: No ioctl\n"); 1763 error = EINVAL; 1764 goto bad; 1765 } 1766 1767 memset(&wdc_c, 0, sizeof(wdc_c)); 1768 1769 /* 1770 * Abort if physio broke up the transfer 1771 */ 1772 1773 if (bp->b_bcount != wi->wi_atareq.datalen) { 1774 printf("physio split wd ioctl request... cannot proceed\n"); 1775 error = EIO; 1776 goto bad; 1777 } 1778 1779 /* 1780 * Abort if we didn't get a buffer size that was a multiple of 1781 * our sector size (or was larger than NBBY) 1782 */ 1783 1784 if ((bp->b_bcount % wi->wi_softc->sc_dk.dk_label->d_secsize) != 0 || 1785 (bp->b_bcount / wi->wi_softc->sc_dk.dk_label->d_secsize) >= 1786 (1 << NBBY)) { 1787 error = EINVAL; 1788 goto bad; 1789 } 1790 1791 /* 1792 * Make sure a timeout was supplied in the ioctl request 1793 */ 1794 1795 if (wi->wi_atareq.timeout == 0) { 1796 error = EINVAL; 1797 goto bad; 1798 } 1799 1800 if (wi->wi_atareq.flags & ATACMD_READ) 1801 wdc_c.flags |= AT_READ; 1802 else if (wi->wi_atareq.flags & ATACMD_WRITE) 1803 wdc_c.flags |= AT_WRITE; 1804 1805 if (wi->wi_atareq.flags & ATACMD_READREG) 1806 wdc_c.flags |= AT_READREG; 1807 1808 wdc_c.flags |= AT_WAIT; 1809 1810 wdc_c.timeout = wi->wi_atareq.timeout; 1811 wdc_c.r_command = wi->wi_atareq.command; 1812 wdc_c.r_head = wi->wi_atareq.head & 0x0f; 1813 wdc_c.r_cyl = wi->wi_atareq.cylinder; 1814 wdc_c.r_sector = wi->wi_atareq.sec_num; 1815 wdc_c.r_count = wi->wi_atareq.sec_count; 1816 wdc_c.r_precomp = wi->wi_atareq.features; 1817 wdc_c.r_st_bmask = WDCS_DRDY; 1818 wdc_c.r_st_pmask = WDCS_DRDY; 1819 wdc_c.data = wi->wi_bp.b_data; 1820 wdc_c.bcount = wi->wi_bp.b_bcount; 1821 1822 if (wi->wi_softc->atabus->ata_exec_command(wi->wi_softc->drvp, &wdc_c) 1823 != WDC_COMPLETE) { 1824 wi->wi_atareq.retsts = ATACMD_ERROR; 1825 goto bad; 1826 } 1827 1828 if (wdc_c.flags & (AT_ERROR | AT_TIMEOU | AT_DF)) { 1829 if (wdc_c.flags & AT_ERROR) { 1830 wi->wi_atareq.retsts = ATACMD_ERROR; 1831 wi->wi_atareq.error = wdc_c.r_error; 1832 } else if (wdc_c.flags & AT_DF) 1833 wi->wi_atareq.retsts = ATACMD_DF; 1834 else 1835 wi->wi_atareq.retsts = ATACMD_TIMEOUT; 1836 } else { 1837 wi->wi_atareq.retsts = ATACMD_OK; 1838 if (wi->wi_atareq.flags & ATACMD_READREG) { 1839 wi->wi_atareq.head = wdc_c.r_head ; 1840 wi->wi_atareq.cylinder = wdc_c.r_cyl; 1841 wi->wi_atareq.sec_num = wdc_c.r_sector; 1842 wi->wi_atareq.sec_count = wdc_c.r_count; 1843 wi->wi_atareq.features = wdc_c.r_precomp; 1844 wi->wi_atareq.error = wdc_c.r_error; 1845 } 1846 } 1847 1848 bp->b_error = 0; 1849 biodone(bp); 1850 return; 1851 bad: 1852 bp->b_flags |= B_ERROR; 1853 bp->b_error = error; 1854 biodone(bp); 1855 } 1856
Indexes created Tue Sep 30 10:09:55 GMT 2025